From 091806edd458486af13ad83c9802f5b8b54d6d19 Mon Sep 17 00:00:00 2001 From: Bob Peterson Date: Tue, 29 Apr 2008 12:35:48 -0500 Subject: [GFS2] filesystem consistency error from do_strip This patch fixes a GFS2 filesystem consistency error reported from function do_strip. The problem was caused by a timing window that allowed two vfs inodes to be created in memory that point to the same file. The problem is fixed by making the vfs's iget_test, iget_set mechanism check and set a new bit in the in-core gfs2_inode structure while the vfs inode spin_lock is held. Signed-off-by: Bob Peterson Signed-off-by: Steven Whitehouse --- fs/gfs2/glops.c | 2 +- fs/gfs2/incore.h | 1 + fs/gfs2/inode.c | 10 +++++----- fs/gfs2/meta_io.c | 6 ++++-- fs/gfs2/ops_super.c | 16 +++++++++------- 5 files changed, 20 insertions(+), 15 deletions(-) (limited to 'fs') diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index d31badadef8..07d84d16cda 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -249,7 +249,7 @@ static int inode_go_lock(struct gfs2_holder *gh) struct gfs2_inode *ip = gl->gl_object; int error = 0; - if (!ip) + if (!ip || (gh->gh_flags & GL_SKIP)) return 0; if (test_bit(GIF_INVALID, &ip->i_flags)) { diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 9c2c0b90b22..eabe5eac41d 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -236,6 +236,7 @@ enum { GIF_INVALID = 0, GIF_QD_LOCKED = 1, GIF_SW_PAGED = 3, + GIF_USER = 4, /* user inode, not metadata addr space */ }; struct gfs2_dinode_host { diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 3a9ef526c30..09453d057e4 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -47,8 +47,7 @@ static int iget_test(struct inode *inode, void *opaque) struct gfs2_inode *ip = GFS2_I(inode); u64 *no_addr = opaque; - if (ip->i_no_addr == *no_addr && - inode->i_private != NULL) + if (ip->i_no_addr == *no_addr && test_bit(GIF_USER, &ip->i_flags)) return 1; return 0; @@ -61,6 +60,7 @@ static int iget_set(struct inode *inode, void *opaque) inode->i_ino = (unsigned long)*no_addr; ip->i_no_addr = *no_addr; + set_bit(GIF_USER, &ip->i_flags); return 0; } @@ -86,7 +86,7 @@ static int iget_skip_test(struct inode *inode, void *opaque) struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_skip_data *data = opaque; - if (ip->i_no_addr == data->no_addr && inode->i_private != NULL){ + if (ip->i_no_addr == data->no_addr && test_bit(GIF_USER, &ip->i_flags)){ if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)){ data->skipped = 1; return 0; @@ -105,6 +105,7 @@ static int iget_skip_set(struct inode *inode, void *opaque) return 1; inode->i_ino = (unsigned long)(data->no_addr); ip->i_no_addr = data->no_addr; + set_bit(GIF_USER, &ip->i_flags); return 0; } @@ -166,7 +167,7 @@ void gfs2_set_iop(struct inode *inode) * Returns: A VFS inode, or an error */ -struct inode *gfs2_inode_lookup(struct super_block *sb, +struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, u64 no_addr, u64 no_formal_ino, int skip_freeing) @@ -187,7 +188,6 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, if (inode->i_state & I_NEW) { struct gfs2_sbd *sdp = GFS2_SB(inode); - inode->i_private = ip; ip->i_no_formal_ino = no_formal_ino; error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index 85aea27b4a8..78d75f892f8 100644 --- a/fs/gfs2/meta_io.c +++ b/fs/gfs2/meta_io.c @@ -1,6 +1,6 @@ /* * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. - * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. + * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. * * This copyrighted material is made available to anyone wishing to use, * modify, copy, or redistribute it subject to the terms and conditions @@ -69,13 +69,15 @@ static const struct address_space_operations aspace_aops = { struct inode *gfs2_aspace_get(struct gfs2_sbd *sdp) { struct inode *aspace; + struct gfs2_inode *ip; aspace = new_inode(sdp->sd_vfs); if (aspace) { mapping_set_gfp_mask(aspace->i_mapping, GFP_NOFS); aspace->i_mapping->a_ops = &aspace_aops; aspace->i_size = ~0ULL; - aspace->i_private = NULL; + ip = GFS2_I(aspace); + clear_bit(GIF_USER, &ip->i_flags); insert_inode_hash(aspace); } return aspace; diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c index 2278c68b7e3..0b7cc920eb8 100644 --- a/fs/gfs2/ops_super.c +++ b/fs/gfs2/ops_super.c @@ -1,6 +1,6 @@ /* * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. - * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. + * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. * * This copyrighted material is made available to anyone wishing to use, * modify, copy, or redistribute it subject to the terms and conditions @@ -52,7 +52,7 @@ static int gfs2_write_inode(struct inode *inode, int sync) struct gfs2_inode *ip = GFS2_I(inode); /* Check this is a "normal" inode */ - if (inode->i_private) { + if (test_bit(GIF_USER, &ip->i_flags)) { if (current->flags & PF_MEMALLOC) return 0; if (sync) @@ -297,8 +297,9 @@ static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data) */ static void gfs2_drop_inode(struct inode *inode) { - if (inode->i_private && inode->i_nlink) { - struct gfs2_inode *ip = GFS2_I(inode); + struct gfs2_inode *ip = GFS2_I(inode); + + if (test_bit(GIF_USER, &ip->i_flags) && inode->i_nlink) { struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; if (gl && test_bit(GLF_DEMOTE, &gl->gl_flags)) clear_nlink(inode); @@ -314,12 +315,13 @@ static void gfs2_drop_inode(struct inode *inode) static void gfs2_clear_inode(struct inode *inode) { + struct gfs2_inode *ip = GFS2_I(inode); + /* This tells us its a "real" inode and not one which only * serves to contain an address space (see rgrp.c, meta_io.c) * which therefore doesn't have its own glocks. */ - if (inode->i_private) { - struct gfs2_inode *ip = GFS2_I(inode); + if (test_bit(GIF_USER, &ip->i_flags)) { ip->i_gl->gl_object = NULL; gfs2_glock_schedule_for_reclaim(ip->i_gl); gfs2_glock_put(ip->i_gl); @@ -419,7 +421,7 @@ static void gfs2_delete_inode(struct inode *inode) struct gfs2_holder gh; int error; - if (!inode->i_private) + if (!test_bit(GIF_USER, &ip->i_flags)) goto out; error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); -- cgit v1.2.3 From ad99f77778e83358c371dab7a50bde69270ed6b8 Mon Sep 17 00:00:00 2001 From: Andrew Price Date: Thu, 1 May 2008 11:55:38 +0100 Subject: [GFS2] Fix cast from unsigned int to s64 This fixes bz 444829 where allocating a new block caused gfs2 file systems to report 0 bytes used in df. It was caused by a broken cast from an unsigned int in gfs2_block_alloc() to a negative s64 in gfs2_statfs_change(). This patch casts the unsigned int to an s64 before the unary minus is applied. Signed-off-by: Andrew Price Signed-off-by: Steven Whitehouse --- fs/gfs2/rgrp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 7e8f0b1d6c6..6387523a315 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -1495,7 +1495,7 @@ u64 gfs2_alloc_block(struct gfs2_inode *ip, unsigned int *n) al->al_alloced += *n; - gfs2_statfs_change(sdp, 0, -*n, 0); + gfs2_statfs_change(sdp, 0, -(s64)*n, 0); gfs2_quota_change(ip, *n, ip->i_inode.i_uid, ip->i_inode.i_gid); spin_lock(&sdp->sd_rindex_spin); -- cgit v1.2.3 From 00377d8e3842776d1da633ad9c79a16ecb548b92 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Fri, 9 May 2008 17:59:51 +0200 Subject: [GFS2] Prefer strlcpy() over snprintf() strlcpy is faster than snprintf when you don't use the returned value. Signed-off-by: Jean Delvare Signed-off-by: Steven Whitehouse --- fs/gfs2/ops_fstype.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index ef9c6c4f80f..b2028c82e8d 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -142,8 +142,8 @@ static int init_names(struct gfs2_sbd *sdp, int silent) if (!table[0]) table = sdp->sd_vfs->s_id; - snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto); - snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table); + strlcpy(sdp->sd_proto_name, proto, GFS2_FSNAME_LEN); + strlcpy(sdp->sd_table_name, table, GFS2_FSNAME_LEN); table = sdp->sd_table_name; while ((table = strchr(table, '/'))) -- cgit v1.2.3 From d0a9c078db4769f7305ff9774558776d12bfb25b Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 12 May 2008 22:23:49 +0000 Subject: [CIFS] CIFS currently allows for permissions to be changed on files, even when unix extensions and cifsacl support are disabled. These permissions changes are "ephemeral" however. They are lost whenever a share is mounted and unmounted, or when memory pressure forces the inode out of the cache. Because of this, we'd like to introduce a behavior change to make CIFS behave more like local DOS/Windows filesystems. When unix extensions and cifsacl support aren't enabled, then don't silently ignore changes to permission bits that can't be reflected on the server. Still, there may be people relying on the current behavior for certain applications. This patch adds a new "dynperm" (and a corresponding "nodynperm") mount option that will be intended to make the client fall back to legacy behavior when setting these modes. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/cifs_fs_sb.h | 1 + fs/cifs/connect.c | 7 +++++++ 2 files changed, 8 insertions(+) (limited to 'fs') diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h index 8ad2330ba06..877c85409f1 100644 --- a/fs/cifs/cifs_fs_sb.h +++ b/fs/cifs/cifs_fs_sb.h @@ -30,6 +30,7 @@ #define CIFS_MOUNT_CIFS_ACL 0x200 /* send ACL requests to non-POSIX srv */ #define CIFS_MOUNT_OVERR_UID 0x400 /* override uid returned from server */ #define CIFS_MOUNT_OVERR_GID 0x800 /* override gid returned from server */ +#define CIFS_MOUNT_DYNPERM 0x1000 /* allow in-memory only mode setting */ struct cifs_sb_info { struct cifsTconInfo *tcon; /* primary mount */ diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index f428bf3bf1a..8e2fa6d46c7 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -75,6 +75,7 @@ struct smb_vol { bool setuids:1; bool override_uid:1; bool override_gid:1; + bool dynperm:1; bool noperm:1; bool no_psx_acl:1; /* set if posix acl support should be disabled */ bool cifs_acl:1; @@ -1246,6 +1247,10 @@ cifs_parse_mount_options(char *options, const char *devname, vol->setuids = 1; } else if (strnicmp(data, "nosetuids", 9) == 0) { vol->setuids = 0; + } else if (strnicmp(data, "dynperm", 7) == 0) { + vol->dynperm = true; + } else if (strnicmp(data, "nodynperm", 9) == 0) { + vol->dynperm = false; } else if (strnicmp(data, "nohard", 6) == 0) { vol->retry = 0; } else if (strnicmp(data, "nosoft", 6) == 0) { @@ -2125,6 +2130,8 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; if (volume_info.override_gid) cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; + if (volume_info.dynperm) + cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; if (volume_info.direct_io) { cFYI(1, ("mounting share using direct i/o")); cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; -- cgit v1.2.3 From 6353450a2deefaa79cdb4fd2b72830c7db610256 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 12 May 2008 19:56:05 -0700 Subject: fix memory leak in CIFSFindNext When CIFSFindNext gets back an -EBADF from a call, it sets the return code of the function to 0 and eventually exits. Doing this makes the cleanup at the end of the function skip freeing the SMB buffer, so we need to make sure we free the buffer explicitly when doing this. If we don't you end up with errors like this when unplugging the cifs kernel module: slab error in kmem_cache_destroy(): cache `cifs_request': Can't free all objects [] kmem_cache_destroy+0x61/0xf3 [] cifs_destroy_request_bufs+0x14/0x28 [cifs] [] exit_cifs+0x1e/0x80 [cifs] [] sys_delete_module+0x192/0x1b8 [] audit_syscall_entry+0x14b/0x17d [] syscall_call+0x7/0xb ======================= Signed-off-by: Jeff Layton --- fs/cifs/CHANGES | 3 ++- fs/cifs/cifssmb.c | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES index 8355e918fdd..502a4c2b841 100644 --- a/fs/cifs/CHANGES +++ b/fs/cifs/CHANGES @@ -12,7 +12,8 @@ Add ability to modify cifs acls for handling chmod (when mounted with cifsacl flag). Fix prefixpath path separator so we can handle mounts with prefixpaths longer than one directory (one path component) when mounted to Windows servers. Fix slow file open when cifsacl -enabled. +enabled. Fix memory leak in FindNext when the SMB call returns -EBADF. + Version 1.51 ------------ diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 95fbba4ea7d..641cc8ffc51 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -3679,6 +3679,7 @@ int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, if (rc) { if (rc == -EBADF) { psrch_inf->endOfSearch = true; + cifs_buf_release(pSMB); rc = 0; /* search probably was closed at end of search*/ } else cFYI(1, ("FindNext returned = %d", rc)); -- cgit v1.2.3 From ed5f037005d728de19a0f63678ac35b42064966d Mon Sep 17 00:00:00 2001 From: Marcin Slusarz Date: Tue, 13 May 2008 04:01:01 +0000 Subject: [CIFS] CIFSSMBPosixLock should return -EINVAL on error all other codepaths in this function return negative values on errors Signed-off-by: Marcin Slusarz Signed-off-by: Steve French --- fs/cifs/cifssmb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 641cc8ffc51..1cbe61524ef 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -1767,7 +1767,7 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, cFYI(1, ("Posix Lock")); if (pLockData == NULL) - return EINVAL; + return -EINVAL; rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); -- cgit v1.2.3 From 582d21e5e319d38c0485d8b9e92f6f2341f7c79b Mon Sep 17 00:00:00 2001 From: Steve French Date: Tue, 13 May 2008 04:54:12 +0000 Subject: [CIFS] cleanup old checkpatch warnings Signed-off-by: Steve French --- fs/cifs/cifsproto.h | 6 +++--- fs/cifs/cifssmb.c | 51 +++++++++++++++++++++++++++++++++------------------ fs/cifs/connect.c | 7 ++++--- fs/cifs/netmisc.c | 6 +++--- fs/cifs/ntlmssp.h | 4 ++-- 5 files changed, 45 insertions(+), 29 deletions(-) (limited to 'fs') diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index d481f6c5a2b..08248e85b78 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -93,7 +93,7 @@ extern struct timespec cnvrtDosUnixTm(__u16 date, __u16 time); extern int cifs_get_inode_info(struct inode **pinode, const unsigned char *search_path, - FILE_ALL_INFO * pfile_info, + FILE_ALL_INFO *pfile_info, struct super_block *sb, int xid, const __u16 *pfid); extern int cifs_get_inode_info_unix(struct inode **pinode, const unsigned char *search_path, @@ -130,7 +130,7 @@ extern int CIFSFindClose(const int, struct cifsTconInfo *tcon, extern int CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, const unsigned char *searchName, - FILE_ALL_INFO * findData, + FILE_ALL_INFO *findData, int legacy /* whether to use old info level */, const struct nls_table *nls_codepage, int remap); extern int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, @@ -141,7 +141,7 @@ extern int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, extern int CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, const unsigned char *searchName, - FILE_UNIX_BASIC_INFO * pFindData, + FILE_UNIX_BASIC_INFO *pFindData, const struct nls_table *nls_codepage, int remap); extern int CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 1cbe61524ef..3c05c2de50e 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -1247,7 +1247,7 @@ OldOpenRetry: } else { /* BB verify if wct == 15 */ -/* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field BB */ +/* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ *netfid = pSMBr->Fid; /* cifs fid stays in le */ /* Let caller know file was created so we can set the mode. */ @@ -1944,7 +1944,7 @@ renameRetry: /* protocol requires ASCII signature byte on Unicode string */ pSMB->OldFileName[name_len + 1] = 0x00; name_len2 = - cifsConvertToUCS((__le16 *) &pSMB->OldFileName[name_len + 2], + cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], toName, PATH_MAX, nls_codepage, remap); name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; name_len2 *= 2; /* convert to bytes */ @@ -2925,7 +2925,8 @@ setAclRetry: } params = 6 + name_len; pSMB->MaxParameterCount = cpu_to_le16(2); - pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ + /* BB find max SMB size from sess */ + pSMB->MaxDataCount = cpu_to_le16(1000); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; @@ -3322,7 +3323,8 @@ QPathInfoRetry: params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); - pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ + /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(4000); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; @@ -3388,7 +3390,7 @@ QPathInfoRetry: int CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, const unsigned char *searchName, - FILE_UNIX_BASIC_INFO * pFindData, + FILE_UNIX_BASIC_INFO *pFindData, const struct nls_table *nls_codepage, int remap) { /* SMB_QUERY_FILE_UNIX_BASIC */ @@ -3922,7 +3924,8 @@ getDFSRetry: pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->MaxParameterCount = 0; - pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ + /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(4000); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; @@ -4230,7 +4233,8 @@ QFSAttributeRetry: params = 2; /* level */ pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); - pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ + /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(1000); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; @@ -4299,7 +4303,8 @@ QFSDeviceRetry: params = 2; /* level */ pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); - pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ + /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(1000); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; @@ -4370,7 +4375,8 @@ QFSUnixRetry: pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->MaxParameterCount = cpu_to_le16(2); - pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ + /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(100); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; @@ -4445,7 +4451,8 @@ SETFSUnixRetry: offset = param_offset + params; pSMB->MaxParameterCount = cpu_to_le16(4); - pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ + /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(100); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); @@ -4513,7 +4520,8 @@ QFSPosixRetry: pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->MaxParameterCount = cpu_to_le16(2); - pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ + /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(100); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; @@ -4703,7 +4711,8 @@ CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, count = sizeof(struct file_end_of_file_info); pSMB->MaxParameterCount = cpu_to_le16(2); - pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ + /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(1000); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); @@ -4790,7 +4799,8 @@ CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon, count = sizeof(FILE_BASIC_INFO); pSMB->MaxParameterCount = cpu_to_le16(2); - pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ + /* BB find max SMB PDU from sess */ + pSMB->MaxDataCount = cpu_to_le16(1000); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); @@ -4857,7 +4867,8 @@ SetTimesRetry: params = 6 + name_len; count = sizeof(FILE_BASIC_INFO); pSMB->MaxParameterCount = cpu_to_le16(2); - pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ + /* BB find max SMB PDU from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(1000); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; @@ -4987,7 +4998,8 @@ setPermsRetry: params = 6 + name_len; count = sizeof(FILE_UNIX_BASIC_INFO); pSMB->MaxParameterCount = cpu_to_le16(2); - pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ + /* BB find max SMB PDU from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(1000); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; @@ -5170,7 +5182,8 @@ QAllEAsRetry: params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); - pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ + /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(4000); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; @@ -5318,7 +5331,8 @@ QEARetry: params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); - pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ + /* BB find exact max SMB PDU from sess structure BB */ + pSMB->MaxDataCount = cpu_to_le16(4000); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; @@ -5476,7 +5490,8 @@ SetEARetry: count = sizeof(*parm_data) + ea_value_len + name_len; pSMB->MaxParameterCount = cpu_to_le16(2); - pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ + /* BB find max SMB PDU from sess */ + pSMB->MaxDataCount = cpu_to_le16(1000); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 8e2fa6d46c7..7c2e5ea0330 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1820,7 +1820,7 @@ convert_delimiter(char *path, char delim) if (path == NULL) return; - if (delim == '/') + if (delim == '/') old_delim = '\\'; else old_delim = '/'; @@ -2321,9 +2321,10 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, user = ses->userName; domain = ses->domainName; smb_buffer = cifs_buf_get(); - if (smb_buffer == NULL) { + + if (smb_buffer == NULL) return -ENOMEM; - } + smb_buffer_response = smb_buffer; pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c index 00f4cff400b..8703d68f5b2 100644 --- a/fs/cifs/netmisc.c +++ b/fs/cifs/netmisc.c @@ -141,11 +141,11 @@ cifs_inet_pton(const int address_family, const char *cp, void *dst) int ret = 0; /* calculate length by finding first slash or NULL */ - if (address_family == AF_INET) { + if (address_family == AF_INET) ret = in4_pton(cp, -1 /* len */, dst, '\\', NULL); - } else if (address_family == AF_INET6) { + else if (address_family == AF_INET6) ret = in6_pton(cp, -1 /* len */, dst , '\\', NULL); - } + cFYI(DBG2, ("address conversion returned %d for %s", ret, cp)); if (ret > 0) ret = 1; diff --git a/fs/cifs/ntlmssp.h b/fs/cifs/ntlmssp.h index 7170a9b70f1..c377d8065d9 100644 --- a/fs/cifs/ntlmssp.h +++ b/fs/cifs/ntlmssp.h @@ -64,7 +64,7 @@ typedef struct _SECURITY_BUFFER { } __attribute__((packed)) SECURITY_BUFFER; typedef struct _NEGOTIATE_MESSAGE { - __u8 Signature[sizeof (NTLMSSP_SIGNATURE)]; + __u8 Signature[sizeof(NTLMSSP_SIGNATURE)]; __le32 MessageType; /* 1 */ __le32 NegotiateFlags; SECURITY_BUFFER DomainName; /* RFC 1001 style and ASCII */ @@ -74,7 +74,7 @@ typedef struct _NEGOTIATE_MESSAGE { } __attribute__((packed)) NEGOTIATE_MESSAGE, *PNEGOTIATE_MESSAGE; typedef struct _CHALLENGE_MESSAGE { - __u8 Signature[sizeof (NTLMSSP_SIGNATURE)]; + __u8 Signature[sizeof(NTLMSSP_SIGNATURE)]; __le32 MessageType; /* 2 */ SECURITY_BUFFER TargetName; __le32 NegotiateFlags; -- cgit v1.2.3 From 77c57ec89682c73785d12d51a6d1f873b292fa42 Mon Sep 17 00:00:00 2001 From: Steve French Date: Tue, 13 May 2008 21:39:32 +0000 Subject: [CIFS] don't explicitly do a FindClose on rewind when directory search has ended Do the following series of operations on a CIFS share: opendir(dir) readdir(dir) unlink(file in dir) rewinddir(dir) readdir(dir) If the readdir read all entries in the directory this will make CIFS throw an error like this: CIFS VFS: Send error in FindClose = -9 CIFS requests "Close at end of search" of the server by setting this bit when issuing FindFirst or FindNext. Therefore when all search entries are returned, the server may return "end of search" and close the search implicitly when this bit is set by the client on the request. We check for this when a readdir is explicitly closed - but when the client notices that a directory has changed after the last operation, we attempt to close the directory before reopening by reissuing a second FindFirst. But, the directory may already been implicitly closed (due to end of search) because the first readdir finished. So we only want to issue a FindClose call in this case when we don't expect it to already be closed. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/readdir.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c index 34ec32100c7..713c2511019 100644 --- a/fs/cifs/readdir.c +++ b/fs/cifs/readdir.c @@ -670,8 +670,11 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon, (index_to_find < first_entry_in_buffer)) { /* close and restart search */ cFYI(1, ("search backing up - close and restart search")); - cifsFile->invalidHandle = true; - CIFSFindClose(xid, pTcon, cifsFile->netfid); + if (!cifsFile->srch_inf.endOfSearch && + !cifsFile->invalidHandle) { + cifsFile->invalidHandle = true; + CIFSFindClose(xid, pTcon, cifsFile->netfid); + } kfree(cifsFile->search_resume_name); cifsFile->search_resume_name = NULL; if (cifsFile->srch_inf.ntwrk_buf_start) { -- cgit v1.2.3 From e10f7b551d2a79b113d5ce66b5dc9f3657035445 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Wed, 14 May 2008 10:21:33 -0700 Subject: clarify return value of cifs_convert_flags() cifs_convert_flags returns 0x20197 in the default case. It's not immediately evident where that number comes from, so change it to be an or'ed set of flags. The compiler will boil it down anyway. (Thanks to Guenter Kukkukk for clarifying the flags). Signed-off-by: Steve French --- fs/cifs/file.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 31a0a33b9d9..8636cec2642 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -75,7 +75,11 @@ static inline int cifs_convert_flags(unsigned int flags) return (GENERIC_READ | GENERIC_WRITE); } - return 0x20197; + return (READ_CONTROL | FILE_WRITE_ATTRIBUTES | FILE_READ_ATTRIBUTES | + FILE_WRITE_EA | FILE_APPEND_DATA | FILE_WRITE_DATA | + FILE_READ_DATA); + + } static inline int cifs_get_disposition(unsigned int flags) -- cgit v1.2.3 From 35fc37d5175091c36d034a28c057da0f9594ee7e Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Wed, 14 May 2008 10:22:03 -0700 Subject: add function to convert access flags to legacy open mode SMBLegacyOpen always opens a file as r/w. This could be problematic for files with ATTR_READONLY set. Have it interpret the access_mode into a sane open mode. Signed-off-by: Steve French --- fs/cifs/cifssmb.c | 22 +++++++++++++++------- fs/cifs/inode.c | 3 +-- 2 files changed, 16 insertions(+), 9 deletions(-) (limited to 'fs') diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 3c05c2de50e..9c04ad40455 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -1166,6 +1166,20 @@ static __u16 convert_disposition(int disposition) return ofun; } +static int +access_flags_to_smbopen_mode(const int access_flags) +{ + int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); + + if (masked_flags == GENERIC_READ) + return SMBOPEN_READ; + else if (masked_flags == GENERIC_WRITE) + return SMBOPEN_WRITE; + + /* just go for read/write */ + return SMBOPEN_READWRITE; +} + int SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, const char *fileName, const int openDisposition, @@ -1207,13 +1221,7 @@ OldOpenRetry: pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); - /* BB fixme add conversion for access_flags to bits 0 - 2 of mode */ - /* 0 = read - 1 = write - 2 = rw - 3 = execute - */ - pSMB->Mode = cpu_to_le16(2); + pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ /* set file as system file if special file such as fifo and server expecting SFU style and diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index fcbdbb6ad7b..2d53b436d51 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -1502,8 +1502,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs) int oplock = 0; rc = SMBLegacyOpen(xid, pTcon, full_path, - FILE_OPEN, - SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, + FILE_OPEN, GENERIC_WRITE, CREATE_NOT_DIR, &netfid, &oplock, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & -- cgit v1.2.3 From 646dd539878a194bc14b104621c0b2b33587e40f Mon Sep 17 00:00:00 2001 From: Steve French Date: Thu, 15 May 2008 01:50:56 +0000 Subject: [CIFS] Fix paths when share is in DFS to include proper prefix Some versions of Samba (3.2-pre e.g.) are stricter about checking to make sure that paths in DFS name spaces are sent in the form \\server\share\dir\subdir ... instead of \dir\subdir Acked-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/cifsproto.h | 3 --- fs/cifs/connect.c | 26 +++------------------ fs/cifs/dir.c | 28 ++++++++++++++++++----- fs/cifs/inode.c | 65 +++++++---------------------------------------------- fs/cifs/link.c | 42 +++------------------------------- 5 files changed, 37 insertions(+), 127 deletions(-) (limited to 'fs') diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 08248e85b78..845b18e1abe 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -150,9 +150,6 @@ extern int CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, unsigned int *number_of_UNC_in_array, const struct nls_table *nls_codepage, int remap); -extern int connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, - const char *old_path, - const struct nls_table *nls_codepage, int remap); extern int get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, const struct nls_table *nls_codepage, diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 7c2e5ea0330..d5747e30f1c 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1418,27 +1418,6 @@ find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) return NULL; } -int -connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, - const char *old_path, const struct nls_table *nls_codepage, - int remap) -{ - struct dfs_info3_param *referrals = NULL; - unsigned int num_referrals; - int rc = 0; - - rc = get_dfs_path(xid, pSesInfo, old_path, nls_codepage, - &num_referrals, &referrals, remap); - - /* BB Add in code to: if valid refrl, if not ip address contact - the helper that resolves tcp names, mount to it, try to - tcon to it unmount it if fail */ - - kfree(referrals); - - return rc; -} - int get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, const struct nls_table *nls_codepage, unsigned int *pnum_referrals, @@ -2161,10 +2140,11 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, if ((strchr(volume_info.UNC + 3, '\\') == NULL) && (strchr(volume_info.UNC + 3, '/') == NULL)) { - rc = connect_to_dfs_path(xid, pSesInfo, +/* rc = connect_to_dfs_path(xid, pSesInfo, "", cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); + CIFS_MOUNT_MAP_SPECIAL_CHR);*/ + cFYI(1, ("DFS root not supported")); rc = -ENODEV; goto out; } else { diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index e4e0078a052..05afe33ea64 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -49,18 +49,25 @@ build_path_from_dentry(struct dentry *direntry) struct dentry *temp; int namelen; int pplen; + int dfsplen; char *full_path; char dirsep; + struct cifs_sb_info *cifs_sb; if (direntry == NULL) return NULL; /* not much we can do if dentry is freed and we need to reopen the file after it was closed implicitly when the server crashed */ - dirsep = CIFS_DIR_SEP(CIFS_SB(direntry->d_sb)); - pplen = CIFS_SB(direntry->d_sb)->prepathlen; + cifs_sb = CIFS_SB(direntry->d_sb); + dirsep = CIFS_DIR_SEP(cifs_sb); + pplen = cifs_sb->prepathlen; + if (cifs_sb->tcon && (cifs_sb->tcon->Flags & SMB_SHARE_IS_IN_DFS)) + dfsplen = strnlen(cifs_sb->tcon->treeName, MAX_TREE_SIZE + 1); + else + dfsplen = 0; cifs_bp_rename_retry: - namelen = pplen; + namelen = pplen + dfsplen; for (temp = direntry; !IS_ROOT(temp);) { namelen += (1 + temp->d_name.len); temp = temp->d_parent; @@ -91,7 +98,7 @@ cifs_bp_rename_retry: return NULL; } } - if (namelen != pplen) { + if (namelen != pplen + dfsplen) { cERROR(1, ("did not end path lookup where expected namelen is %d", namelen)); @@ -107,7 +114,18 @@ cifs_bp_rename_retry: since the '\' is a valid posix character so we can not switch those safely to '/' if any are found in the middle of the prepath */ /* BB test paths to Windows with '/' in the midst of prepath */ - strncpy(full_path, CIFS_SB(direntry->d_sb)->prepath, pplen); + + if (dfsplen) { + strncpy(full_path, cifs_sb->tcon->treeName, dfsplen); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) { + int i; + for (i = 0; i < dfsplen; i++) { + if (full_path[i] == '\\') + full_path[i] = '/'; + } + } + } + strncpy(full_path + dfsplen, CIFS_SB(direntry->d_sb)->prepath, pplen); return full_path; } diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 2d53b436d51..9d9b56a9c08 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -161,52 +161,18 @@ static void cifs_unix_info_to_inode(struct inode *inode, spin_unlock(&inode->i_lock); } -static const unsigned char *cifs_get_search_path(struct cifs_sb_info *cifs_sb, - const char *search_path) -{ - int tree_len; - int path_len; - int i; - char *tmp_path; - struct cifsTconInfo *pTcon = cifs_sb->tcon; - - if (!(pTcon->Flags & SMB_SHARE_IS_IN_DFS)) - return search_path; - - /* use full path name for working with DFS */ - tree_len = strnlen(pTcon->treeName, MAX_TREE_SIZE + 1); - path_len = strnlen(search_path, MAX_PATHCONF); - - tmp_path = kmalloc(tree_len+path_len+1, GFP_KERNEL); - if (tmp_path == NULL) - return search_path; - - strncpy(tmp_path, pTcon->treeName, tree_len); - if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) - for (i = 0; i < tree_len; i++) { - if (tmp_path[i] == '\\') - tmp_path[i] = '/'; - } - strncpy(tmp_path+tree_len, search_path, path_len); - tmp_path[tree_len+path_len] = 0; - return tmp_path; -} - int cifs_get_inode_info_unix(struct inode **pinode, - const unsigned char *search_path, struct super_block *sb, int xid) + const unsigned char *full_path, struct super_block *sb, int xid) { int rc = 0; FILE_UNIX_BASIC_INFO findData; struct cifsTconInfo *pTcon; struct inode *inode; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); - const unsigned char *full_path; bool is_dfs_referral = false; pTcon = cifs_sb->tcon; - cFYI(1, ("Getting info on %s", search_path)); - - full_path = cifs_get_search_path(cifs_sb, search_path); + cFYI(1, ("Getting info on %s", full_path)); try_again_CIFSSMBUnixQPathInfo: /* could have done a find first instead but this returns more info */ @@ -218,10 +184,6 @@ try_again_CIFSSMBUnixQPathInfo: if (rc) { if (rc == -EREMOTE && !is_dfs_referral) { is_dfs_referral = true; - if (full_path != search_path) { - kfree(full_path); - full_path = search_path; - } goto try_again_CIFSSMBUnixQPathInfo; } goto cgiiu_exit; @@ -271,8 +233,6 @@ try_again_CIFSSMBUnixQPathInfo: cifs_set_ops(inode, is_dfs_referral); } cgiiu_exit: - if (full_path != search_path) - kfree(full_path); return rc; } @@ -380,20 +340,19 @@ static int get_sfu_mode(struct inode *inode, } int cifs_get_inode_info(struct inode **pinode, - const unsigned char *search_path, FILE_ALL_INFO *pfindData, + const unsigned char *full_path, FILE_ALL_INFO *pfindData, struct super_block *sb, int xid, const __u16 *pfid) { int rc = 0; struct cifsTconInfo *pTcon; struct inode *inode; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); - const unsigned char *full_path = NULL; char *buf = NULL; bool adjustTZ = false; bool is_dfs_referral = false; pTcon = cifs_sb->tcon; - cFYI(1, ("Getting info on %s", search_path)); + cFYI(1, ("Getting info on %s", full_path)); if ((pfindData == NULL) && (*pinode != NULL)) { if (CIFS_I(*pinode)->clientCanCacheRead) { @@ -409,8 +368,6 @@ int cifs_get_inode_info(struct inode **pinode, return -ENOMEM; pfindData = (FILE_ALL_INFO *)buf; - full_path = cifs_get_search_path(cifs_sb, search_path); - try_again_CIFSSMBQPathInfo: /* could do find first instead but this returns more info */ rc = CIFSSMBQPathInfo(xid, pTcon, full_path, pfindData, @@ -432,10 +389,6 @@ try_again_CIFSSMBQPathInfo: if (rc) { if (rc == -EREMOTE && !is_dfs_referral) { is_dfs_referral = true; - if (full_path != search_path) { - kfree(full_path); - full_path = search_path; - } goto try_again_CIFSSMBQPathInfo; } goto cgii_exit; @@ -470,7 +423,7 @@ try_again_CIFSSMBQPathInfo: __u64 inode_num; rc1 = CIFSGetSrvInodeNumber(xid, pTcon, - search_path, &inode_num, + full_path, &inode_num, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); @@ -539,7 +492,7 @@ try_again_CIFSSMBQPathInfo: (cifsInfo->cifsAttrs & ATTR_SYSTEM)) { if (decode_sfu_inode(inode, le64_to_cpu(pfindData->EndOfFile), - search_path, + full_path, cifs_sb, xid)) cFYI(1, ("Unrecognized sfu inode type")); @@ -582,12 +535,12 @@ try_again_CIFSSMBQPathInfo: /* fill in 0777 bits from ACL */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { cFYI(1, ("Getting mode bits from ACL")); - acl_to_uid_mode(inode, search_path, pfid); + acl_to_uid_mode(inode, full_path, pfid); } #endif if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { /* fill in remaining high mode bits e.g. SUID, VTX */ - get_sfu_mode(inode, search_path, cifs_sb, xid); + get_sfu_mode(inode, full_path, cifs_sb, xid); } else if (atomic_read(&cifsInfo->inUse) == 0) { inode->i_uid = cifs_sb->mnt_uid; inode->i_gid = cifs_sb->mnt_gid; @@ -599,8 +552,6 @@ try_again_CIFSSMBQPathInfo: cifs_set_ops(inode, is_dfs_referral); } cgii_exit: - if (full_path != search_path) - kfree(full_path); kfree(buf); return rc; } diff --git a/fs/cifs/link.c b/fs/cifs/link.c index 1c2c3ce5020..316f9830ce3 100644 --- a/fs/cifs/link.c +++ b/fs/cifs/link.c @@ -295,45 +295,9 @@ cifs_readlink(struct dentry *direntry, char __user *pBuffer, int buflen) cFYI(1, ("Error closing junction point " "(open for ioctl)")); } - /* BB unwind this long, nested function, or remove BB */ - if (rc == -EIO) { - /* Query if DFS Junction */ - unsigned int num_referrals = 0; - struct dfs_info3_param *refs = NULL; - tmp_path = - kmalloc(MAX_TREE_SIZE + MAX_PATHCONF + 1, - GFP_KERNEL); - if (tmp_path) { - strncpy(tmp_path, pTcon->treeName, - MAX_TREE_SIZE); - strncat(tmp_path, full_path, - MAX_PATHCONF); - rc = get_dfs_path(xid, pTcon->ses, - tmp_path, - cifs_sb->local_nls, - &num_referrals, &refs, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); - cFYI(1, ("Get DFS for %s rc = %d ", - tmp_path, rc)); - if ((num_referrals == 0) && (rc == 0)) - rc = -EACCES; - else { - cFYI(1, ("num referral: %d", - num_referrals)); - if (refs && refs->path_name) { - strncpy(tmpbuffer, - refs->path_name, - len-1); - } - } - kfree(refs); - kfree(tmp_path); -} - /* BB add code like else decode referrals - then memcpy to tmpbuffer and free referrals - string array BB */ - } + /* If it is a DFS junction earlier we would have gotten + PATH_NOT_COVERED returned from server so we do + not need to request the DFS info here */ } } /* BB Anything else to do to handle recursive links? */ -- cgit v1.2.3 From 0599ad53fee2d084f9ba26247d7452f06a40d298 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Wed, 14 May 2008 22:34:16 -0700 Subject: sysfs: remove error messages for -EEXIST case It is possible that the entry in sysfs already exists, one case of this is when a network device is renamed to bonding_masters. Anyway, in this case the proper error path is for device_rename to return an error code, not to generate bogus backtrace and errors. Also, to avoid possible races, the create link should be done before the remove link. This makes a device rename atomic operation like other renames. Signed-off-by: Stephen Hemminger Signed-off-by: Greg Kroah-Hartman Signed-off-by: David S. Miller --- drivers/base/core.c | 8 +++----- fs/sysfs/dir.c | 6 +----- 2 files changed, 4 insertions(+), 10 deletions(-) (limited to 'fs') diff --git a/drivers/base/core.c b/drivers/base/core.c index be288b5e418..3eeac5a7858 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -1218,13 +1218,11 @@ int device_rename(struct device *dev, char *new_name) } #else if (dev->class) { - sysfs_remove_link(&dev->class->subsys.kobj, old_device_name); error = sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj, dev->bus_id); - if (error) { - dev_err(dev, "%s: sysfs_create_symlink failed (%d)\n", - __func__, error); - } + if (error) + goto out; + sysfs_remove_link(&dev->class->subsys.kobj, old_device_name); } #endif diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index a1c3a1fab7f..8c0e4b92574 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -419,12 +419,8 @@ void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt, */ int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd) { - if (sysfs_find_dirent(acxt->parent_sd, sd->s_name)) { - printk(KERN_WARNING "sysfs: duplicate filename '%s' " - "can not be created\n", sd->s_name); - WARN_ON(1); + if (sysfs_find_dirent(acxt->parent_sd, sd->s_name)) return -EEXIST; - } sd->s_parent = sysfs_get(acxt->parent_sd); -- cgit v1.2.3 From c32916374b2b4f4d2b7ccdb357fe7989f3b407a6 Mon Sep 17 00:00:00 2001 From: Steve French Date: Thu, 15 May 2008 05:41:54 +0000 Subject: [CIFS] suppress duplicate warning fs/cifs/dir.c: In function 'cifs_ci_compare': fs/cifs/dir.c:582: warning: passing argument 1 of 'memcpy' discards qualifiers from pointer target type Signed-off-by: Andrew Morton Signed-off-by: Steve French --- fs/cifs/dir.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index 05afe33ea64..f0b5b5f3dd2 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -608,7 +608,7 @@ static int cifs_ci_compare(struct dentry *dentry, struct qstr *a, * case take precedence. If a is not a negative dentry, this * should have no side effects */ - memcpy(a->name, b->name, a->len); + memcpy((void *)a->name, b->name, a->len); return 0; } return 1; -- cgit v1.2.3 From f9ddcca4cf7d95238beb295484d1de7c0bf490dd Mon Sep 17 00:00:00 2001 From: Steve French Date: Thu, 15 May 2008 05:51:55 +0000 Subject: [CIFS] BKL-removal: convert CIFS over to unlocked_ioctl cifs_ioctl doesn't seem to need the BKL for anything, so convert it over to use unlocked_ioctl. Signed-off-by: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Steve French --- fs/cifs/cifsfs.c | 10 +++++----- fs/cifs/cifsfs.h | 3 +-- fs/cifs/ioctl.c | 4 ++-- 3 files changed, 8 insertions(+), 9 deletions(-) (limited to 'fs') diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 427a7c69589..b6436b888cf 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -657,7 +657,7 @@ const struct file_operations cifs_file_ops = { .splice_read = generic_file_splice_read, .llseek = cifs_llseek, #ifdef CONFIG_CIFS_POSIX - .ioctl = cifs_ioctl, + .unlocked_ioctl = cifs_ioctl, #endif /* CONFIG_CIFS_POSIX */ #ifdef CONFIG_CIFS_EXPERIMENTAL @@ -677,7 +677,7 @@ const struct file_operations cifs_file_direct_ops = { .flush = cifs_flush, .splice_read = generic_file_splice_read, #ifdef CONFIG_CIFS_POSIX - .ioctl = cifs_ioctl, + .unlocked_ioctl = cifs_ioctl, #endif /* CONFIG_CIFS_POSIX */ .llseek = cifs_llseek, #ifdef CONFIG_CIFS_EXPERIMENTAL @@ -697,7 +697,7 @@ const struct file_operations cifs_file_nobrl_ops = { .splice_read = generic_file_splice_read, .llseek = cifs_llseek, #ifdef CONFIG_CIFS_POSIX - .ioctl = cifs_ioctl, + .unlocked_ioctl = cifs_ioctl, #endif /* CONFIG_CIFS_POSIX */ #ifdef CONFIG_CIFS_EXPERIMENTAL @@ -716,7 +716,7 @@ const struct file_operations cifs_file_direct_nobrl_ops = { .flush = cifs_flush, .splice_read = generic_file_splice_read, #ifdef CONFIG_CIFS_POSIX - .ioctl = cifs_ioctl, + .unlocked_ioctl = cifs_ioctl, #endif /* CONFIG_CIFS_POSIX */ .llseek = cifs_llseek, #ifdef CONFIG_CIFS_EXPERIMENTAL @@ -731,7 +731,7 @@ const struct file_operations cifs_dir_ops = { #ifdef CONFIG_CIFS_EXPERIMENTAL .dir_notify = cifs_dir_notify, #endif /* CONFIG_CIFS_EXPERIMENTAL */ - .ioctl = cifs_ioctl, + .unlocked_ioctl = cifs_ioctl, }; static void diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index cd1301a09b3..25a6cbd1552 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -95,8 +95,7 @@ extern int cifs_setxattr(struct dentry *, const char *, const void *, size_t, int); extern ssize_t cifs_getxattr(struct dentry *, const char *, void *, size_t); extern ssize_t cifs_listxattr(struct dentry *, char *, size_t); -extern int cifs_ioctl(struct inode *inode, struct file *filep, - unsigned int command, unsigned long arg); +extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); #ifdef CONFIG_CIFS_EXPERIMENTAL extern const struct export_operations cifs_export_ops; diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c index 5c792df13d6..0088a5b5256 100644 --- a/fs/cifs/ioctl.c +++ b/fs/cifs/ioctl.c @@ -30,9 +30,9 @@ #define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2) -int cifs_ioctl(struct inode *inode, struct file *filep, - unsigned int command, unsigned long arg) +long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg) { + struct inode *inode = filep->f_dentry->d_inode; int rc = -ENOTTY; /* strange error - but the precedent */ int xid; struct cifs_sb_info *cifs_sb; -- cgit v1.2.3 From c2cf07d591ef7bc25c220249822d9bdf0f44c75c Mon Sep 17 00:00:00 2001 From: Steve French Date: Thu, 15 May 2008 06:20:02 +0000 Subject: [CIFS] Finishup DFS code Fixup GetDFSRefer to prepare for cleanup of SMB response processing Fix build warning in link.c Signed-off-by: Steve French --- fs/cifs/cifsproto.h | 4 +- fs/cifs/cifssmb.c | 169 ++++++++++++++++++++++++---------------------------- fs/cifs/connect.c | 3 +- fs/cifs/link.c | 1 - 4 files changed, 80 insertions(+), 97 deletions(-) (limited to 'fs') diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 845b18e1abe..b9f5e935f82 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -146,8 +146,8 @@ extern int CIFSSMBUnixQPathInfo(const int xid, extern int CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, const unsigned char *searchName, - unsigned char **targetUNCs, - unsigned int *number_of_UNC_in_array, + struct dfs_info3_param **target_nodes, + unsigned int *number_of_nodes_in_array, const struct nls_table *nls_codepage, int remap); extern int get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 9c04ad40455..fc297383cb0 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -3870,8 +3870,8 @@ GetInodeNumOut: int CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, const unsigned char *searchName, - unsigned char **targetUNCs, - unsigned int *number_of_UNC_in_array, + struct dfs_info3_param **target_nodes, + unsigned int *num_of_nodes, const struct nls_table *nls_codepage, int remap) { /* TRANS2_GET_DFS_REFERRAL */ @@ -3884,8 +3884,8 @@ CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, unsigned int i; char *temp; __u16 params, byte_count; - *number_of_UNC_in_array = 0; - *targetUNCs = NULL; + *num_of_nodes = 0; + *target_nodes = NULL; cFYI(1, ("In GetDFSRefer the path %s", searchName)); if (ses == NULL) @@ -3955,99 +3955,84 @@ getDFSRetry: (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { cFYI(1, ("Send error in GetDFSRefer = %d", rc)); - } else { /* decode response */ -/* BB Add logic to parse referrals here */ - rc = validate_t2((struct smb_t2_rsp *)pSMBr); - - /* BB Also check if enough total bytes returned? */ - if (rc || (pSMBr->ByteCount < 17)) - rc = -EIO; /* bad smb */ - else { - __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); - __u16 data_count = le16_to_cpu(pSMBr->t2.DataCount); - - cFYI(1, - ("Decoding GetDFSRefer response BCC: %d Offset %d", - pSMBr->ByteCount, data_offset)); - referrals = - (struct dfs_referral_level_3 *) - (8 /* sizeof start of data block */ + - data_offset + - (char *) &pSMBr->hdr.Protocol); - cFYI(1, ("num_referrals: %d dfs flags: 0x%x ... \n" - "for referral one refer size: 0x%x srv " - "type: 0x%x refer flags: 0x%x ttl: 0x%x", - le16_to_cpu(pSMBr->NumberOfReferrals), - le16_to_cpu(pSMBr->DFSFlags), - le16_to_cpu(referrals->ReferralSize), - le16_to_cpu(referrals->ServerType), - le16_to_cpu(referrals->ReferralFlags), - le16_to_cpu(referrals->TimeToLive))); - /* BB This field is actually two bytes in from start of - data block so we could do safety check that DataBlock - begins at address of pSMBr->NumberOfReferrals */ - *number_of_UNC_in_array = - le16_to_cpu(pSMBr->NumberOfReferrals); - - /* BB Fix below so can return more than one referral */ - if (*number_of_UNC_in_array > 1) - *number_of_UNC_in_array = 1; - - /* get the length of the strings describing refs */ - name_len = 0; - for (i = 0; i < *number_of_UNC_in_array; i++) { - /* make sure that DfsPathOffset not past end */ - __u16 offset = - le16_to_cpu(referrals->DfsPathOffset); - if (offset > data_count) { - /* if invalid referral, stop here and do - not try to copy any more */ - *number_of_UNC_in_array = i; - break; - } - temp = ((char *)referrals) + offset; + goto GetDFSRefExit; + } + rc = validate_t2((struct smb_t2_rsp *)pSMBr); - if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { - name_len += UniStrnlen((wchar_t *)temp, - data_count); - } else { - name_len += strnlen(temp, data_count); - } - referrals++; - /* BB add check that referral pointer does - not fall off end PDU */ - } - /* BB add check for name_len bigger than bcc */ - *targetUNCs = - kmalloc(name_len+1+(*number_of_UNC_in_array), - GFP_KERNEL); - if (*targetUNCs == NULL) { - rc = -ENOMEM; - goto GetDFSRefExit; + /* BB Also check if enough total bytes returned? */ + if (rc || (pSMBr->ByteCount < 17)) + rc = -EIO; /* bad smb */ + else { + __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); + __u16 data_count = le16_to_cpu(pSMBr->t2.DataCount); + + cFYI(1, ("Decoding GetDFSRefer response BCC: %d Offset %d", + pSMBr->ByteCount, data_offset)); + referrals = + (struct dfs_referral_level_3 *) + (8 /* sizeof start of data block */ + + data_offset + + (char *) &pSMBr->hdr.Protocol); + cFYI(1, ("num_referrals: %d dfs flags: 0x%x ... \n" + "for referral one refer size: 0x%x srv " + "type: 0x%x refer flags: 0x%x ttl: 0x%x", + le16_to_cpu(pSMBr->NumberOfReferrals), + le16_to_cpu(pSMBr->DFSFlags), + le16_to_cpu(referrals->ReferralSize), + le16_to_cpu(referrals->ServerType), + le16_to_cpu(referrals->ReferralFlags), + le16_to_cpu(referrals->TimeToLive))); + /* BB This field is actually two bytes in from start of + data block so we could do safety check that DataBlock + begins at address of pSMBr->NumberOfReferrals */ + *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); + + /* BB Fix below so can return more than one referral */ + if (*num_of_nodes > 1) + *num_of_nodes = 1; + + /* get the length of the strings describing refs */ + name_len = 0; + for (i = 0; i < *num_of_nodes; i++) { + /* make sure that DfsPathOffset not past end */ + __u16 offset = le16_to_cpu(referrals->DfsPathOffset); + if (offset > data_count) { + /* if invalid referral, stop here and do + not try to copy any more */ + *num_of_nodes = i; + break; } - /* copy the ref strings */ - referrals = (struct dfs_referral_level_3 *) - (8 /* sizeof data hdr */ + data_offset + - (char *) &pSMBr->hdr.Protocol); - - for (i = 0; i < *number_of_UNC_in_array; i++) { - temp = ((char *)referrals) + - le16_to_cpu(referrals->DfsPathOffset); - if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { - cifs_strfromUCS_le(*targetUNCs, - (__le16 *) temp, - name_len, - nls_codepage); - } else { - strncpy(*targetUNCs, temp, name_len); - } - /* BB update target_uncs pointers */ - referrals++; + temp = ((char *)referrals) + offset; + + if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { + name_len += UniStrnlen((wchar_t *)temp, + data_count); + } else { + name_len += strnlen(temp, data_count); } - temp = *targetUNCs; - temp[name_len] = 0; + referrals++; + /* BB add check that referral pointer does + not fall off end PDU */ + } + /* BB add check for name_len bigger than bcc */ + *target_nodes = + kmalloc(name_len+1+(*num_of_nodes), + GFP_KERNEL); + if (*target_nodes == NULL) { + rc = -ENOMEM; + goto GetDFSRefExit; } + referrals = (struct dfs_referral_level_3 *) + (8 /* sizeof data hdr */ + data_offset + + (char *) &pSMBr->hdr.Protocol); + + for (i = 0; i < *num_of_nodes; i++) { + temp = ((char *)referrals) + + le16_to_cpu(referrals->DfsPathOffset); + /* BB update target_uncs pointers */ + referrals++; + } } GetDFSRefExit: if (pSMB) diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index d5747e30f1c..c397fcfd9f1 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1425,7 +1425,6 @@ get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, { char *temp_unc; int rc = 0; - unsigned char *targetUNCs; *pnum_referrals = 0; *preferrals = NULL; @@ -1448,7 +1447,7 @@ get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, kfree(temp_unc); } if (rc == 0) - rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, &targetUNCs, + rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, pnum_referrals, nls_codepage, remap); /* BB map targetUNCs to dfs_info3 structures, here or in CIFSGetDFSRefer BB */ diff --git a/fs/cifs/link.c b/fs/cifs/link.c index 316f9830ce3..63f644000ce 100644 --- a/fs/cifs/link.c +++ b/fs/cifs/link.c @@ -234,7 +234,6 @@ cifs_readlink(struct dentry *direntry, char __user *pBuffer, int buflen) struct cifs_sb_info *cifs_sb; struct cifsTconInfo *pTcon; char *full_path = NULL; - char *tmp_path = NULL; char *tmpbuffer; int len; __u16 fid; -- cgit v1.2.3 From 95b1cb90b79896c4bf5ea484bee2b41d7d293f43 Mon Sep 17 00:00:00 2001 From: Steve French Date: Thu, 15 May 2008 16:44:38 +0000 Subject: [CIFS] enable parsing for transport encryption mount parm Samba now supports transport encryption on particular exports (mounted tree ids can be encrypted for servers which support the unix extensions). This adds parsing support to cifs mount option parsing for this. Signed-off-by: Steve French --- fs/cifs/README | 5 +++++ fs/cifs/cifsglob.h | 1 + fs/cifs/connect.c | 25 +++++++++++++++++-------- 3 files changed, 23 insertions(+), 8 deletions(-) (limited to 'fs') diff --git a/fs/cifs/README b/fs/cifs/README index 621aa1a8597..2bd6fe556f8 100644 --- a/fs/cifs/README +++ b/fs/cifs/README @@ -483,6 +483,11 @@ A partial list of the supported mount options follows: sign Must use packet signing (helps avoid unwanted data modification by intermediate systems in the route). Note that signing does not work with lanman or plaintext authentication. + seal Must seal (encrypt) all data on this mounted share before + sending on the network. Requires support for Unix Extensions. + Note that this differs from the sign mount option in that it + causes encryption of data sent over this mounted share but other + shares mounted to the same server are unaffected. sec Security mode. Allowed values are: none attempt to connection as a null user (no name) krb5 Use Kerberos version 5 authentication diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index b7d9f698e63..08914053242 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -281,6 +281,7 @@ struct cifsTconInfo { bool ipc:1; /* set if connection to IPC$ eg for RPC/PIPES */ bool retry:1; bool nocase:1; + bool seal:1; /* transport encryption for this mounted share */ bool unix_ext:1; /* if false disable Linux extensions to CIFS protocol for this mount even if server would support */ /* BB add field for back pointer to sb struct(s)? */ diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index c397fcfd9f1..023434f72c1 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -60,7 +60,7 @@ struct smb_vol { char *domainname; char *UNC; char *UNCip; - char *in6_addr; /* ipv6 address as human readable form of in6_addr */ + char *in6_addr; /* ipv6 address as human readable form of in6_addr */ char *iocharset; /* local code page for mapping to and from Unicode */ char source_rfc1001_name[16]; /* netbios name of client */ char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ @@ -82,13 +82,14 @@ struct smb_vol { bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ bool server_ino:1; /* use inode numbers from server ie UniqueId */ bool direct_io:1; - bool remap:1; /* set to remap seven reserved chars in filenames */ - bool posix_paths:1; /* unset to not ask for posix pathnames. */ + bool remap:1; /* set to remap seven reserved chars in filenames */ + bool posix_paths:1; /* unset to not ask for posix pathnames. */ bool no_linux_ext:1; bool sfu_emul:1; - bool nullauth:1; /* attempt to authenticate with null user */ - unsigned nocase; /* request case insensitive filenames */ - unsigned nobrl; /* disable sending byte range locks to srv */ + bool nullauth:1; /* attempt to authenticate with null user */ + bool nocase:1; /* request case insensitive filenames */ + bool nobrl:1; /* disable sending byte range locks to srv */ + bool seal:1; /* request transport encryption on share */ unsigned int rsize; unsigned int wsize; unsigned int sockopt; @@ -1273,8 +1274,12 @@ cifs_parse_mount_options(char *options, const char *devname, vol->no_psx_acl = 1; } else if (strnicmp(data, "sign", 4) == 0) { vol->secFlg |= CIFSSEC_MUST_SIGN; -/* } else if (strnicmp(data, "seal",4) == 0) { - vol->secFlg |= CIFSSEC_MUST_SEAL; */ + } else if (strnicmp(data, "seal", 4) == 0) { + /* we do not do the following in secFlags because seal + is a per tree connection (mount) not a per socket + or per-smb connection option in the protocol */ + /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ + vol->seal = 1; } else if (strnicmp(data, "direct", 6) == 0) { vol->direct_io = 1; } else if (strnicmp(data, "forcedirectio", 13) == 0) { @@ -2126,6 +2131,9 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, for the retry flag is used */ tcon->retry = volume_info.retry; tcon->nocase = volume_info.nocase; + if (tcon->seal != volume_info.seal) + cERROR(1, ("transport encryption setting " + "conflicts with existing tid")); } else { tcon = tconInfoAlloc(); if (tcon == NULL) @@ -2159,6 +2167,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, atomic_inc(&pSesInfo->inUse); tcon->retry = volume_info.retry; tcon->nocase = volume_info.nocase; + tcon->seal = volume_info.seal; } } } -- cgit v1.2.3 From de2db8d790b058fcd75d603780b913bd824972b3 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Fri, 16 May 2008 13:10:32 +0400 Subject: Fixed DFS code to work with new 'build_path_from_dentry', that returns full path if share in the dfs, now. Signed-off-by: Igor Mammedov Signed-off-by: Steve French --- fs/cifs/cifs_dfs_ref.c | 49 +------------------------------------------------ 1 file changed, 1 insertion(+), 48 deletions(-) (limited to 'fs') diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c index f6fdecf6598..d82374c9e32 100644 --- a/fs/cifs/cifs_dfs_ref.c +++ b/fs/cifs/cifs_dfs_ref.c @@ -219,53 +219,6 @@ static struct vfsmount *cifs_dfs_do_refmount(const struct vfsmount *mnt_parent, } -static char *build_full_dfs_path_from_dentry(struct dentry *dentry) -{ - char *full_path = NULL; - char *search_path; - char *tmp_path; - size_t l_max_len; - struct cifs_sb_info *cifs_sb; - - if (dentry->d_inode == NULL) - return NULL; - - cifs_sb = CIFS_SB(dentry->d_inode->i_sb); - - if (cifs_sb->tcon == NULL) - return NULL; - - search_path = build_path_from_dentry(dentry); - if (search_path == NULL) - return NULL; - - if (cifs_sb->tcon->Flags & SMB_SHARE_IS_IN_DFS) { - int i; - /* we should use full path name for correct working with DFS */ - l_max_len = strnlen(cifs_sb->tcon->treeName, MAX_TREE_SIZE+1) + - strnlen(search_path, MAX_PATHCONF) + 1; - tmp_path = kmalloc(l_max_len, GFP_KERNEL); - if (tmp_path == NULL) { - kfree(search_path); - return NULL; - } - strncpy(tmp_path, cifs_sb->tcon->treeName, l_max_len); - tmp_path[l_max_len-1] = 0; - if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) - for (i = 0; i < l_max_len; i++) { - if (tmp_path[i] == '\\') - tmp_path[i] = '/'; - } - strncat(tmp_path, search_path, l_max_len - strlen(tmp_path)); - - full_path = tmp_path; - kfree(search_path); - } else { - full_path = search_path; - } - return full_path; -} - static int add_mount_helper(struct vfsmount *newmnt, struct nameidata *nd, struct list_head *mntlist) { @@ -333,7 +286,7 @@ cifs_dfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd) goto out_err; } - full_path = build_full_dfs_path_from_dentry(dentry); + full_path = build_path_from_dentry(dentry); if (full_path == NULL) { rc = -ENOMEM; goto out_err; -- cgit v1.2.3 From b0b539739fe9b7d75002412a787cfdf4efddbc33 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 5 May 2008 11:45:41 -0400 Subject: NFS: Ensure that 'noac' and/or 'actimeo=0' turn off attribute caching Both the 'noac' and 'actimeo=0' mount options should ensure that attributes are not cached, however a bug in nfs_attribute_timeout() means that currently, the attributes may in fact get cached for up to one jiffy. This has been seen to cause corruption in some applications. The reason for the bug is that the time_in_range() test returns 'true' as long as the current time lies between nfsi->read_cache_jiffies and nfsi->read_cache_jiffies + nfsi->attrtimeo. In other words, if jiffies equals nfsi->read_cache_jiffies, then we still cache the attribute data. Signed-off-by: Trond Myklebust --- fs/nfs/inode.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'fs') diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 5cb3345eb69..2501b864f7c 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -707,6 +707,13 @@ int nfs_attribute_timeout(struct inode *inode) if (nfs_have_delegation(inode, FMODE_READ)) return 0; + /* + * Special case: if the attribute timeout is set to 0, then always + * treat the cache as having expired (unless holding + * a delegation). + */ + if (nfsi->attrtimeo == 0) + return 1; return !time_in_range(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo); } -- cgit v1.2.3 From 38def50fabc479dc96ea6bd2cb2526e0dfc36fa4 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Thu, 1 May 2008 20:03:22 +0300 Subject: nfs: fix race in nfs_dirty_request When called from nfs_flush_incompatible, the req is not locked, so req->wb_page might be set to NULL before it is used by PageWriteback. Signed-off-by: Fred Isaman Signed-off-by: Benny Halevy Signed-off-by: Trond Myklebust --- fs/nfs/write.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 1ade11d1ba0..6d8ace3e325 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -415,7 +415,7 @@ nfs_dirty_request(struct nfs_page *req) if (page == NULL || test_bit(PG_NEED_COMMIT, &req->wb_flags)) return 0; - return !PageWriteback(req->wb_page); + return !PageWriteback(page); } #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) -- cgit v1.2.3 From 3a6258e1fb5ff717dcefa04afc35f81aaae3f3e0 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 6 May 2008 13:32:40 -0400 Subject: NFSv4: Check the return value of decode_compound_hdr_arg() If decode_compound_hdr_arg() returns a resource error, then we cannot proceed to process the callback. Return a 'GARBAGE_ARGS' rpc-level error to the caller instead. If, however, the minor version field is incorrect, then we need to propagate the resulting NFS4ERR_MINOR_VERS_MISMATCH error back as the compound status field (setting the nops field to 0). Finally, if encode_compound_hdr_res() returns an error, we need to return an RPC_SYSTEM_ERR to the caller. Signed-off-by: Trond Myklebust --- fs/nfs/callback_xdr.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) (limited to 'fs') diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index 13619d24f02..646d4d85072 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -401,12 +401,12 @@ static __be32 process_op(struct svc_rqst *rqstp, */ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *resp) { - struct cb_compound_hdr_arg hdr_arg; - struct cb_compound_hdr_res hdr_res; + struct cb_compound_hdr_arg hdr_arg = { 0 }; + struct cb_compound_hdr_res hdr_res = { NULL }; struct xdr_stream xdr_in, xdr_out; __be32 *p; __be32 status; - unsigned int nops = 1; + unsigned int nops = 0; dprintk("%s: start\n", __FUNCTION__); @@ -415,20 +415,20 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r p = (__be32*)((char *)rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len); xdr_init_encode(&xdr_out, &rqstp->rq_res, p); - decode_compound_hdr_arg(&xdr_in, &hdr_arg); + status = decode_compound_hdr_arg(&xdr_in, &hdr_arg); + if (status == __constant_htonl(NFS4ERR_RESOURCE)) + return rpc_garbage_args; + hdr_res.taglen = hdr_arg.taglen; hdr_res.tag = hdr_arg.tag; - hdr_res.nops = NULL; - encode_compound_hdr_res(&xdr_out, &hdr_res); + if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0) + return rpc_system_err; - for (;;) { + while (status == 0 && nops != hdr_arg.nops) { status = process_op(rqstp, &xdr_in, argp, &xdr_out, resp); - if (status != 0) - break; - if (nops == hdr_arg.nops) - break; nops++; } + *hdr_res.status = status; *hdr_res.nops = htonl(nops); dprintk("%s: done, status = %u\n", __FUNCTION__, ntohl(status)); -- cgit v1.2.3 From 46c8ac74250a396aca855e494f49a960797a6b5e Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Fri, 2 May 2008 13:42:42 -0700 Subject: nfs/lsm: make NFSv4 set LSM mount options NFSv3 get_sb operations call into the LSM layer to set security options passed from userspace. NFSv4 hooks were not originally added since it was reasonably late in the merge window and NFSv3 was the only thing that had regressed (v4 has never supported any LSM options) This patch makes NFSv4 call into the LSM to set security options rather than just blindly dropping them with no notice to the user as happens today. This patch was tested in a simple NFSv4 environment with the context= option and appeared to work as expected. Signed-off-by: Eric Paris Cc: Trond Myklebust Cc: "J. Bruce Fields" Cc: Stephen Smalley Acked-by: James Morris Cc: Casey Schaufler Signed-off-by: Andrew Morton Signed-off-by: Trond Myklebust --- fs/nfs/super.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'fs') diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 7226a506f3c..5ed86ac0fd9 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2015,6 +2015,10 @@ static int nfs4_get_sb(struct file_system_type *fs_type, goto error_splat_super; } + error = security_sb_set_mnt_opts(s, &data.lsm_opts); + if (error) + goto error_splat_root; + s->s_flags |= MS_ACTIVE; mnt->mnt_sb = s; mnt->mnt_root = mntroot; @@ -2031,6 +2035,8 @@ out_free: nfs_free_server(server); goto out; +error_splat_root: + dput(mntroot); error_splat_super: up_write(&s->s_umount); deactivate_super(s); @@ -2114,6 +2120,8 @@ static int nfs4_xdev_get_sb(struct file_system_type *fs_type, int flags, mnt->mnt_sb = s; mnt->mnt_root = mntroot; + security_sb_clone_mnt_opts(data->sb, s); + dprintk("<-- nfs4_xdev_get_sb() = 0\n"); return 0; @@ -2197,6 +2205,8 @@ static int nfs4_referral_get_sb(struct file_system_type *fs_type, int flags, mnt->mnt_sb = s; mnt->mnt_root = mntroot; + security_sb_clone_mnt_opts(data->sb, s); + dprintk("<-- nfs4_referral_get_sb() = 0\n"); return 0; -- cgit v1.2.3 From 3110ff8048fb757b36112b044b384aea9c44d6e4 Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Fri, 2 May 2008 13:42:44 -0700 Subject: nfs: replace remaining __FUNCTION__ occurrences __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison Cc: Trond Myklebust Cc: "J. Bruce Fields" Signed-off-by: Andrew Morton Signed-off-by: Trond Myklebust --- fs/nfs/callback.c | 2 +- fs/nfs/callback_proc.c | 4 +- fs/nfs/callback_xdr.c | 18 ++++----- fs/nfs/client.c | 8 ++-- fs/nfs/delegation.c | 4 +- fs/nfs/dir.c | 18 ++++----- fs/nfs/file.c | 2 +- fs/nfs/inode.c | 4 +- fs/nfs/namespace.c | 8 ++-- fs/nfs/nfs3proc.c | 6 +-- fs/nfs/nfs4namespace.c | 12 +++--- fs/nfs/nfs4proc.c | 32 ++++++++-------- fs/nfs/nfs4renewd.c | 10 ++--- fs/nfs/nfs4state.c | 6 +-- fs/nfs/nfs4xdr.c | 100 ++++++++++++++++++++++++------------------------- fs/nfs/proc.c | 8 ++-- fs/nfs/read.c | 2 +- fs/nfs/super.c | 2 +- 18 files changed, 123 insertions(+), 123 deletions(-) (limited to 'fs') diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index 5606ae3d72d..c1e7c830062 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -182,7 +182,7 @@ static int nfs_callback_authenticate(struct svc_rqst *rqstp) if (clp == NULL) return SVC_DROP; - dprintk("%s: %s NFSv4 callback!\n", __FUNCTION__, + dprintk("%s: %s NFSv4 callback!\n", __func__, svc_print_addr(rqstp, buf, sizeof(buf))); nfs_put_client(clp); diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index 15f7785048d..f7e83e23cf9 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -57,7 +57,7 @@ out_iput: out_putclient: nfs_put_client(clp); out: - dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res->status)); + dprintk("%s: exit with status = %d\n", __func__, ntohl(res->status)); return res->status; } @@ -98,6 +98,6 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy) nfs_put_client(prev); } while (clp != NULL); out: - dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res)); + dprintk("%s: exit with status = %d\n", __func__, ntohl(res)); return res; } diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index 646d4d85072..dd0ef34b584 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -141,7 +141,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound /* We do not like overly long tags! */ if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) { printk("NFSv4 CALLBACK %s: client sent tag of length %u\n", - __FUNCTION__, hdr->taglen); + __func__, hdr->taglen); return htonl(NFS4ERR_RESOURCE); } p = read_buf(xdr, 12); @@ -151,7 +151,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound /* Check minor version is zero. */ if (minor_version != 0) { printk(KERN_WARNING "%s: NFSv4 server callback with illegal minor version %u!\n", - __FUNCTION__, minor_version); + __func__, minor_version); return htonl(NFS4ERR_MINOR_VERS_MISMATCH); } hdr->callback_ident = ntohl(*p++); @@ -179,7 +179,7 @@ static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr args->addr = svc_addr(rqstp); status = decode_bitmap(xdr, args->bitmap); out: - dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(status)); + dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); return status; } @@ -200,7 +200,7 @@ static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, args->truncate = ntohl(*p); status = decode_fh(xdr, &args->fh); out: - dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(status)); + dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); return status; } @@ -349,7 +349,7 @@ static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, status = encode_attr_mtime(xdr, res->bitmap, &res->mtime); *savep = htonl((unsigned int)((char *)xdr->p - (char *)(savep+1))); out: - dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(status)); + dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); return status; } @@ -363,7 +363,7 @@ static __be32 process_op(struct svc_rqst *rqstp, long maxlen; __be32 res; - dprintk("%s: start\n", __FUNCTION__); + dprintk("%s: start\n", __func__); status = decode_op_hdr(xdr_in, &op_nr); if (likely(status == 0)) { switch (op_nr) { @@ -392,7 +392,7 @@ static __be32 process_op(struct svc_rqst *rqstp, status = res; if (op->encode_res != NULL && status == 0) status = op->encode_res(rqstp, xdr_out, resp); - dprintk("%s: done, status = %d\n", __FUNCTION__, ntohl(status)); + dprintk("%s: done, status = %d\n", __func__, ntohl(status)); return status; } @@ -408,7 +408,7 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r __be32 status; unsigned int nops = 0; - dprintk("%s: start\n", __FUNCTION__); + dprintk("%s: start\n", __func__); xdr_init_decode(&xdr_in, &rqstp->rq_arg, rqstp->rq_arg.head[0].iov_base); @@ -431,7 +431,7 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r *hdr_res.status = status; *hdr_res.nops = htonl(nops); - dprintk("%s: done, status = %u\n", __FUNCTION__, ntohl(status)); + dprintk("%s: done, status = %u\n", __func__, ntohl(status)); return rpc_success; } diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 89ac5bb0401..f2a092ca69b 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -488,7 +488,7 @@ static int nfs_create_rpc_client(struct nfs_client *clp, clnt = rpc_create(&args); if (IS_ERR(clnt)) { dprintk("%s: cannot create RPC client. Error = %ld\n", - __FUNCTION__, PTR_ERR(clnt)); + __func__, PTR_ERR(clnt)); return PTR_ERR(clnt); } @@ -576,7 +576,7 @@ static int nfs_init_server_rpcclient(struct nfs_server *server, server->client = rpc_clone_client(clp->cl_rpcclient); if (IS_ERR(server->client)) { - dprintk("%s: couldn't create rpc_client!\n", __FUNCTION__); + dprintk("%s: couldn't create rpc_client!\n", __func__); return PTR_ERR(server->client); } @@ -590,7 +590,7 @@ static int nfs_init_server_rpcclient(struct nfs_server *server, auth = rpcauth_create(pseudoflavour, server->client); if (IS_ERR(auth)) { - dprintk("%s: couldn't create credcache!\n", __FUNCTION__); + dprintk("%s: couldn't create credcache!\n", __func__); return PTR_ERR(auth); } } @@ -985,7 +985,7 @@ static int nfs4_init_client(struct nfs_client *clp, error = nfs_idmap_new(clp); if (error < 0) { dprintk("%s: failed to create idmapper. Error = %d\n", - __FUNCTION__, error); + __func__, error); goto error; } __set_bit(NFS_CS_IDMAP, &clp->cl_res_state); diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 00a5e4405e1..cc563cfa694 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -60,7 +60,7 @@ static int nfs_delegation_claim_locks(struct nfs_open_context *ctx, struct nfs4_ switch (status) { default: printk(KERN_ERR "%s: unhandled error %d.\n", - __FUNCTION__, status); + __func__, status); case -NFS4ERR_EXPIRED: /* kill_proc(fl->fl_pid, SIGLOST, 1); */ case -NFS4ERR_STALE_CLIENTID: @@ -186,7 +186,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct */ dfprintk(FILE, "%s: server %s handed out " "a duplicate delegation!\n", - __FUNCTION__, clp->cl_hostname); + __func__, clp->cl_hostname); if (delegation->type <= nfsi->delegation->type) { freeme = delegation; delegation = NULL; diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index f288b3ecab4..58d43daec08 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -180,7 +180,7 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page *page) int error; dfprintk(DIRCACHE, "NFS: %s: reading cookie %Lu into page %lu\n", - __FUNCTION__, (long long)desc->entry->cookie, + __func__, (long long)desc->entry->cookie, page->index); again: @@ -256,7 +256,7 @@ int find_dirent(nfs_readdir_descriptor_t *desc) while((status = dir_decode(desc)) == 0) { dfprintk(DIRCACHE, "NFS: %s: examining cookie %Lu\n", - __FUNCTION__, (unsigned long long)entry->cookie); + __func__, (unsigned long long)entry->cookie); if (entry->prev_cookie == *desc->dir_cookie) break; if (loop_count++ > 200) { @@ -315,7 +315,7 @@ int find_dirent_page(nfs_readdir_descriptor_t *desc) int status; dfprintk(DIRCACHE, "NFS: %s: searching page %ld for target %Lu\n", - __FUNCTION__, desc->page_index, + __func__, desc->page_index, (long long) *desc->dir_cookie); /* If we find the page in the page_cache, we cannot be sure @@ -339,7 +339,7 @@ int find_dirent_page(nfs_readdir_descriptor_t *desc) if (status < 0) dir_page_release(desc); out: - dfprintk(DIRCACHE, "NFS: %s: returns %d\n", __FUNCTION__, status); + dfprintk(DIRCACHE, "NFS: %s: returns %d\n", __func__, status); return status; } @@ -380,7 +380,7 @@ int readdir_search_pagecache(nfs_readdir_descriptor_t *desc) } } - dfprintk(DIRCACHE, "NFS: %s: returns %d\n", __FUNCTION__, res); + dfprintk(DIRCACHE, "NFS: %s: returns %d\n", __func__, res); return res; } @@ -506,7 +506,7 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent, desc->entry->eof = 0; out: dfprintk(DIRCACHE, "NFS: %s: returns %d\n", - __FUNCTION__, status); + __func__, status); return status; out_release: dir_page_release(desc); @@ -780,7 +780,7 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd) if (is_bad_inode(inode)) { dfprintk(LOOKUPCACHE, "%s: %s/%s has dud inode\n", - __FUNCTION__, dentry->d_parent->d_name.name, + __func__, dentry->d_parent->d_name.name, dentry->d_name.name); goto out_bad; } @@ -808,7 +808,7 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd) unlock_kernel(); dput(parent); dfprintk(LOOKUPCACHE, "NFS: %s(%s/%s) is valid\n", - __FUNCTION__, dentry->d_parent->d_name.name, + __func__, dentry->d_parent->d_name.name, dentry->d_name.name); return 1; out_zap_parent: @@ -827,7 +827,7 @@ out_zap_parent: unlock_kernel(); dput(parent); dfprintk(LOOKUPCACHE, "NFS: %s(%s/%s) is invalid\n", - __FUNCTION__, dentry->d_parent->d_name.name, + __func__, dentry->d_parent->d_name.name, dentry->d_name.name); return 0; } diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 3536b01164f..d84a3d8f32a 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -526,7 +526,7 @@ static int do_vfs_lock(struct file *file, struct file_lock *fl) if (res < 0) dprintk(KERN_WARNING "%s: VFS is out of sync with lock manager" " - error %d!\n", - __FUNCTION__, res); + __func__, res); return res; } diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 2501b864f7c..421d338c698 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1002,7 +1002,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) unsigned long now = jiffies; dfprintk(VFS, "NFS: %s(%s/%ld ct=%d info=0x%x)\n", - __FUNCTION__, inode->i_sb->s_id, inode->i_ino, + __func__, inode->i_sb->s_id, inode->i_ino, atomic_read(&inode->i_count), fattr->valid); if (nfsi->fileid != fattr->fileid) @@ -1126,7 +1126,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) * Big trouble! The inode has become a different object. */ printk(KERN_DEBUG "%s: inode %ld mode changed, %07o to %07o\n", - __FUNCTION__, inode->i_ino, inode->i_mode, fattr->mode); + __func__, inode->i_ino, inode->i_mode, fattr->mode); out_err: /* * No need to worry about unhashing the dentry, as the diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index af4d0f1e402..fca518006a5 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -106,7 +106,7 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd) dprintk("--> nfs_follow_mountpoint()\n"); BUG_ON(IS_ROOT(dentry)); - dprintk("%s: enter\n", __FUNCTION__); + dprintk("%s: enter\n", __func__); dput(nd->path.dentry); nd->path.dentry = dget(dentry); @@ -143,7 +143,7 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd) nd->path.dentry = dget(mnt->mnt_root); schedule_delayed_work(&nfs_automount_task, nfs_mountpoint_expiry_timeout); out: - dprintk("%s: done, returned %d\n", __FUNCTION__, err); + dprintk("%s: done, returned %d\n", __func__, err); dprintk("<-- nfs_follow_mountpoint() = %d\n", err); return ERR_PTR(err); @@ -230,7 +230,7 @@ static struct vfsmount *nfs_do_submount(const struct vfsmount *mnt_parent, dprintk("--> nfs_do_submount()\n"); - dprintk("%s: submounting on %s/%s\n", __FUNCTION__, + dprintk("%s: submounting on %s/%s\n", __func__, dentry->d_parent->d_name.name, dentry->d_name.name); if (page == NULL) @@ -243,7 +243,7 @@ static struct vfsmount *nfs_do_submount(const struct vfsmount *mnt_parent, free_page: free_page((unsigned long)page); out: - dprintk("%s: done\n", __FUNCTION__); + dprintk("%s: done\n", __func__); dprintk("<-- nfs_do_submount() = %p\n", mnt); return mnt; diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 549dbce714a..c3523ad03ed 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -63,15 +63,15 @@ do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle, }; int status; - dprintk("%s: call fsinfo\n", __FUNCTION__); + dprintk("%s: call fsinfo\n", __func__); nfs_fattr_init(info->fattr); status = rpc_call_sync(client, &msg, 0); - dprintk("%s: reply fsinfo: %d\n", __FUNCTION__, status); + dprintk("%s: reply fsinfo: %d\n", __func__, status); if (!(info->fattr->valid & NFS_ATTR_FATTR)) { msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR]; msg.rpc_resp = info->fattr; status = rpc_call_sync(client, &msg, 0); - dprintk("%s: reply getattr: %d\n", __FUNCTION__, status); + dprintk("%s: reply getattr: %d\n", __func__, status); } return status; } diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c index 5f9ba41ed5b..b112857301f 100644 --- a/fs/nfs/nfs4namespace.c +++ b/fs/nfs/nfs4namespace.c @@ -86,7 +86,7 @@ static int nfs4_validate_fspath(const struct vfsmount *mnt_parent, if (strncmp(path, fs_path, strlen(fs_path)) != 0) { dprintk("%s: path %s does not begin with fsroot %s\n", - __FUNCTION__, path, fs_path); + __func__, path, fs_path); return -ENOENT; } @@ -134,7 +134,7 @@ static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent, if (locations == NULL || locations->nlocations <= 0) goto out; - dprintk("%s: referral at %s/%s\n", __FUNCTION__, + dprintk("%s: referral at %s/%s\n", __func__, dentry->d_parent->d_name.name, dentry->d_name.name); page = (char *) __get_free_page(GFP_USER); @@ -204,7 +204,7 @@ static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent, out: free_page((unsigned long) page); free_page((unsigned long) page2); - dprintk("%s: done\n", __FUNCTION__); + dprintk("%s: done\n", __func__); return mnt; } @@ -223,7 +223,7 @@ struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentr int err; /* BUG_ON(IS_ROOT(dentry)); */ - dprintk("%s: enter\n", __FUNCTION__); + dprintk("%s: enter\n", __func__); page = alloc_page(GFP_KERNEL); if (page == NULL) @@ -238,7 +238,7 @@ struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentr parent = dget_parent(dentry); dprintk("%s: getting locations for %s/%s\n", - __FUNCTION__, parent->d_name.name, dentry->d_name.name); + __func__, parent->d_name.name, dentry->d_name.name); err = nfs4_proc_fs_locations(parent->d_inode, &dentry->d_name, fs_locations, page); dput(parent); @@ -252,6 +252,6 @@ out_free: __free_page(page); kfree(fs_locations); out: - dprintk("%s: done\n", __FUNCTION__); + dprintk("%s: done\n", __func__); return mnt; } diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index dbc09271af0..f533318b005 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -73,7 +73,7 @@ int nfs4_map_errors(int err) { if (err < -1000) { dprintk("%s could not handle NFSv4 error %d\n", - __FUNCTION__, -err); + __func__, -err); return -EIO; } return err; @@ -1578,7 +1578,7 @@ static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct goto out; /* Make sure server returned a different fsid for the referral */ if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { - dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__, name->name); + dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); status = -EIO; goto out; } @@ -2211,7 +2211,7 @@ static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, }; int status; - dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__, + dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, dentry->d_parent->d_name.name, dentry->d_name.name, (unsigned long long)cookie); @@ -2223,7 +2223,7 @@ static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, nfs_invalidate_atime(dir); - dprintk("%s: returns %d\n", __FUNCTION__, status); + dprintk("%s: returns %d\n", __func__, status); return status; } @@ -3342,7 +3342,7 @@ static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) struct nfs4_lockdata *data = calldata; struct nfs4_state *state = data->lsp->ls_state; - dprintk("%s: begin!\n", __FUNCTION__); + dprintk("%s: begin!\n", __func__); if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) return; /* Do we need to do an open_to_lock_owner? */ @@ -3356,14 +3356,14 @@ static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) data->arg.new_lock_owner = 0; data->timestamp = jiffies; rpc_call_start(task); - dprintk("%s: done!, ret = %d\n", __FUNCTION__, data->rpc_status); + dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); } static void nfs4_lock_done(struct rpc_task *task, void *calldata) { struct nfs4_lockdata *data = calldata; - dprintk("%s: begin!\n", __FUNCTION__); + dprintk("%s: begin!\n", __func__); data->rpc_status = task->tk_status; if (RPC_ASSASSINATED(task)) @@ -3381,14 +3381,14 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata) renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); } out: - dprintk("%s: done, ret = %d!\n", __FUNCTION__, data->rpc_status); + dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); } static void nfs4_lock_release(void *calldata) { struct nfs4_lockdata *data = calldata; - dprintk("%s: begin!\n", __FUNCTION__); + dprintk("%s: begin!\n", __func__); nfs_free_seqid(data->arg.open_seqid); if (data->cancelled != 0) { struct rpc_task *task; @@ -3396,13 +3396,13 @@ static void nfs4_lock_release(void *calldata) data->arg.lock_seqid); if (!IS_ERR(task)) rpc_put_task(task); - dprintk("%s: cancelling lock!\n", __FUNCTION__); + dprintk("%s: cancelling lock!\n", __func__); } else nfs_free_seqid(data->arg.lock_seqid); nfs4_put_lock_state(data->lsp); put_nfs_open_context(data->ctx); kfree(data); - dprintk("%s: done!\n", __FUNCTION__); + dprintk("%s: done!\n", __func__); } static const struct rpc_call_ops nfs4_lock_ops = { @@ -3428,7 +3428,7 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f }; int ret; - dprintk("%s: begin!\n", __FUNCTION__); + dprintk("%s: begin!\n", __func__); data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), fl->fl_u.nfs4_fl.owner); if (data == NULL) @@ -3451,7 +3451,7 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f } else data->cancelled = 1; rpc_put_task(task); - dprintk("%s: done, ret = %d!\n", __FUNCTION__, ret); + dprintk("%s: done, ret = %d!\n", __func__, ret); return ret; } @@ -3527,7 +3527,7 @@ static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock /* Note: we always want to sleep here! */ request->fl_flags = fl_flags | FL_SLEEP; if (do_vfs_lock(request->fl_file, request) < 0) - printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __FUNCTION__); + printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); out_unlock: up_read(&clp->cl_sem); out: @@ -3665,12 +3665,12 @@ int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, }; int status; - dprintk("%s: start\n", __FUNCTION__); + dprintk("%s: start\n", __func__); nfs_fattr_init(&fs_locations->fattr); fs_locations->server = server; fs_locations->nlocations = 0; status = rpc_call_sync(server->client, &msg, 0); - dprintk("%s: returned status = %d\n", __FUNCTION__, status); + dprintk("%s: returned status = %d\n", __func__, status); return status; } diff --git a/fs/nfs/nfs4renewd.c b/fs/nfs/nfs4renewd.c index 5e2e4af1a0e..3305acbbe2a 100644 --- a/fs/nfs/nfs4renewd.c +++ b/fs/nfs/nfs4renewd.c @@ -66,7 +66,7 @@ nfs4_renew_state(struct work_struct *work) unsigned long last, now; down_read(&clp->cl_sem); - dprintk("%s: start\n", __FUNCTION__); + dprintk("%s: start\n", __func__); /* Are there any active superblocks? */ if (list_empty(&clp->cl_superblocks)) goto out; @@ -92,17 +92,17 @@ nfs4_renew_state(struct work_struct *work) spin_lock(&clp->cl_lock); } else dprintk("%s: failed to call renewd. Reason: lease not expired \n", - __FUNCTION__); + __func__); if (timeout < 5 * HZ) /* safeguard */ timeout = 5 * HZ; dprintk("%s: requeueing work. Lease period = %ld\n", - __FUNCTION__, (timeout + HZ - 1) / HZ); + __func__, (timeout + HZ - 1) / HZ); cancel_delayed_work(&clp->cl_renewd); schedule_delayed_work(&clp->cl_renewd, timeout); spin_unlock(&clp->cl_lock); out: up_read(&clp->cl_sem); - dprintk("%s: done\n", __FUNCTION__); + dprintk("%s: done\n", __func__); } /* Must be called with clp->cl_sem locked for writes */ @@ -117,7 +117,7 @@ nfs4_schedule_state_renewal(struct nfs_client *clp) if (timeout < 5 * HZ) timeout = 5 * HZ; dprintk("%s: requeueing work. Lease period = %ld\n", - __FUNCTION__, (timeout + HZ - 1) / HZ); + __func__, (timeout + HZ - 1) / HZ); cancel_delayed_work(&clp->cl_renewd); schedule_delayed_work(&clp->cl_renewd, timeout); set_bit(NFS_CS_RENEWD, &clp->cl_res_state); diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 46eb624e4f1..5a1e02c8b75 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -828,7 +828,7 @@ static int nfs4_reclaim_locks(struct nfs4_state_recovery_ops *ops, struct nfs4_s switch (status) { default: printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n", - __FUNCTION__, status); + __func__, status); case -NFS4ERR_EXPIRED: case -NFS4ERR_NO_GRACE: case -NFS4ERR_RECLAIM_BAD: @@ -869,14 +869,14 @@ static int nfs4_reclaim_open_state(struct nfs4_state_recovery_ops *ops, struct n list_for_each_entry(lock, &state->lock_states, ls_locks) { if (!(lock->ls_flags & NFS_LOCK_INITIALIZED)) printk("%s: Lock reclaim failed!\n", - __FUNCTION__); + __func__); } continue; } switch (status) { default: printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n", - __FUNCTION__, status); + __func__, status); case -ENOENT: case -NFS4ERR_RECLAIM_BAD: case -NFS4ERR_RECLAIM_CONFLICT: diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 5a2d64927b3..b916297d233 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1831,7 +1831,7 @@ static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nf xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->count); dprintk("%s: inlined page args = (%u, %p, %u, %u)\n", - __FUNCTION__, replen, args->pages, + __func__, replen, args->pages, args->pgbase, args->count); out: @@ -2192,9 +2192,9 @@ out: p = xdr_inline_decode(xdr, nbytes); \ if (unlikely(!p)) { \ dprintk("nfs: %s: prematurely hit end of receive" \ - " buffer\n", __FUNCTION__); \ + " buffer\n", __func__); \ dprintk("nfs: %s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \ - __FUNCTION__, xdr->p, nbytes, xdr->end); \ + __func__, xdr->p, nbytes, xdr->end); \ return -EIO; \ } \ } while (0) @@ -2306,12 +2306,12 @@ static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t * READ_BUF(4); READ32(*type); if (*type < NF4REG || *type > NF4NAMEDATTR) { - dprintk("%s: bad type %d\n", __FUNCTION__, *type); + dprintk("%s: bad type %d\n", __func__, *type); return -EIO; } bitmap[0] &= ~FATTR4_WORD0_TYPE; } - dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type); + dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type].nfs2type); return 0; } @@ -2327,7 +2327,7 @@ static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t READ64(*change); bitmap[0] &= ~FATTR4_WORD0_CHANGE; } - dprintk("%s: change attribute=%Lu\n", __FUNCTION__, + dprintk("%s: change attribute=%Lu\n", __func__, (unsigned long long)*change); return 0; } @@ -2344,7 +2344,7 @@ static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t * READ64(*size); bitmap[0] &= ~FATTR4_WORD0_SIZE; } - dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size); + dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); return 0; } @@ -2360,7 +2360,7 @@ static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, ui READ32(*res); bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; } - dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true"); + dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); return 0; } @@ -2376,7 +2376,7 @@ static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, READ32(*res); bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; } - dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true"); + dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); return 0; } @@ -2394,7 +2394,7 @@ static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs READ64(fsid->minor); bitmap[0] &= ~FATTR4_WORD0_FSID; } - dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__, + dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, (unsigned long long)fsid->major, (unsigned long long)fsid->minor); return 0; @@ -2412,7 +2412,7 @@ static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint READ32(*res); bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; } - dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res); + dprintk("%s: file size=%u\n", __func__, (unsigned int)*res); return 0; } @@ -2428,7 +2428,7 @@ static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint READ32(*res); bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; } - dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res); + dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); return 0; } @@ -2444,7 +2444,7 @@ static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t READ64(*fileid); bitmap[0] &= ~FATTR4_WORD0_FILEID; } - dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid); + dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); return 0; } @@ -2460,7 +2460,7 @@ static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitma READ64(*fileid); bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; } - dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid); + dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); return 0; } @@ -2477,7 +2477,7 @@ static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uin READ64(*res); bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; } - dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res); + dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); return status; } @@ -2494,7 +2494,7 @@ static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint READ64(*res); bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; } - dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res); + dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); return status; } @@ -2511,7 +2511,7 @@ static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uin READ64(*res); bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; } - dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res); + dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); return status; } @@ -2569,7 +2569,7 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st status = 0; if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) goto out; - dprintk("%s: fsroot ", __FUNCTION__); + dprintk("%s: fsroot ", __func__); status = decode_pathname(xdr, &res->fs_path); if (unlikely(status != 0)) goto out; @@ -2586,7 +2586,7 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st READ32(m); loc->nservers = 0; - dprintk("%s: servers ", __FUNCTION__); + dprintk("%s: servers ", __func__); while (loc->nservers < m) { struct nfs4_string *server = &loc->servers[loc->nservers]; status = decode_opaque_inline(xdr, &server->len, &server->data); @@ -2599,7 +2599,7 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st unsigned int i; dprintk("%s: using first %u of %u servers " "returned for location %u\n", - __FUNCTION__, + __func__, NFS4_FS_LOCATION_MAXSERVERS, m, res->nlocations); for (i = loc->nservers; i < m; i++) { @@ -2618,7 +2618,7 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st res->nlocations++; } out: - dprintk("%s: fs_locations done, error = %d\n", __FUNCTION__, status); + dprintk("%s: fs_locations done, error = %d\n", __func__, status); return status; out_eio: status = -EIO; @@ -2638,7 +2638,7 @@ static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uin READ64(*res); bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; } - dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res); + dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); return status; } @@ -2655,7 +2655,7 @@ static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_ READ32(*maxlink); bitmap[0] &= ~FATTR4_WORD0_MAXLINK; } - dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink); + dprintk("%s: maxlink=%u\n", __func__, *maxlink); return status; } @@ -2672,7 +2672,7 @@ static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_ READ32(*maxname); bitmap[0] &= ~FATTR4_WORD0_MAXNAME; } - dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname); + dprintk("%s: maxname=%u\n", __func__, *maxname); return status; } @@ -2693,7 +2693,7 @@ static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_ *res = (uint32_t)maxread; bitmap[0] &= ~FATTR4_WORD0_MAXREAD; } - dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res); + dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); return status; } @@ -2714,7 +2714,7 @@ static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32 *res = (uint32_t)maxwrite; bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; } - dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res); + dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); return status; } @@ -2731,7 +2731,7 @@ static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t * *mode &= ~S_IFMT; bitmap[1] &= ~FATTR4_WORD1_MODE; } - dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode); + dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); return 0; } @@ -2747,7 +2747,7 @@ static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t READ32(*nlink); bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; } - dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink); + dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); return 0; } @@ -2766,13 +2766,13 @@ static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nf if (len < XDR_MAX_NETOBJ) { if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0) dprintk("%s: nfs_map_name_to_uid failed!\n", - __FUNCTION__); + __func__); } else dprintk("%s: name too long (%u)!\n", - __FUNCTION__, len); + __func__, len); bitmap[1] &= ~FATTR4_WORD1_OWNER; } - dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid); + dprintk("%s: uid=%d\n", __func__, (int)*uid); return 0; } @@ -2791,13 +2791,13 @@ static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nf if (len < XDR_MAX_NETOBJ) { if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0) dprintk("%s: nfs_map_group_to_gid failed!\n", - __FUNCTION__); + __func__); } else dprintk("%s: name too long (%u)!\n", - __FUNCTION__, len); + __func__, len); bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; } - dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid); + dprintk("%s: gid=%d\n", __func__, (int)*gid); return 0; } @@ -2820,7 +2820,7 @@ static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rde *rdev = tmp; bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; } - dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor); + dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); return 0; } @@ -2837,7 +2837,7 @@ static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uin READ64(*res); bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; } - dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res); + dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); return status; } @@ -2854,7 +2854,7 @@ static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint READ64(*res); bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; } - dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res); + dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); return status; } @@ -2871,7 +2871,7 @@ static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uin READ64(*res); bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; } - dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res); + dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); return status; } @@ -2887,7 +2887,7 @@ static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint READ64(*used); bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; } - dprintk("%s: space used=%Lu\n", __FUNCTION__, + dprintk("%s: space used=%Lu\n", __func__, (unsigned long long)*used); return 0; } @@ -2918,7 +2918,7 @@ static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, str status = decode_attr_time(xdr, time); bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; } - dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec); + dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec); return status; } @@ -2934,7 +2934,7 @@ static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, s status = decode_attr_time(xdr, time); bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; } - dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec); + dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec); return status; } @@ -2950,7 +2950,7 @@ static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, str status = decode_attr_time(xdr, time); bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; } - dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec); + dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec); return status; } @@ -2962,7 +2962,7 @@ static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrl if (unlikely(attrwords != nwords)) { dprintk("%s: server returned incorrect attribute length: " "%u %c %u\n", - __FUNCTION__, + __func__, attrwords << 2, (attrwords < nwords) ? '<' : '>', nwords << 2); @@ -3067,7 +3067,7 @@ static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_re goto xdr_error; status = verify_attr_len(xdr, savep, attrlen); xdr_error: - dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status); + dprintk("%s: xdr returned %d!\n", __func__, -status); return status; } @@ -3100,7 +3100,7 @@ static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) status = verify_attr_len(xdr, savep, attrlen); xdr_error: - dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status); + dprintk("%s: xdr returned %d!\n", __func__, -status); return status; } @@ -3125,7 +3125,7 @@ static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf status = verify_attr_len(xdr, savep, attrlen); xdr_error: - dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status); + dprintk("%s: xdr returned %d!\n", __func__, -status); return status; } @@ -3193,7 +3193,7 @@ static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, cons if ((status = verify_attr_len(xdr, savep, attrlen)) == 0) fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4; xdr_error: - dprintk("%s: xdr returned %d\n", __FUNCTION__, -status); + dprintk("%s: xdr returned %d\n", __func__, -status); return status; } @@ -3226,7 +3226,7 @@ static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) status = verify_attr_len(xdr, savep, attrlen); xdr_error: - dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status); + dprintk("%s: xdr returned %d!\n", __func__, -status); return status; } @@ -3418,7 +3418,7 @@ static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) return decode_delegation(xdr, res); xdr_error: - dprintk("%s: Bitmap too large! Length = %u\n", __FUNCTION__, bmlen); + dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); return -EIO; } @@ -3575,7 +3575,7 @@ short_pkt: * the call was successful, but incomplete. The caller can retry the * readdir starting at the last cookie. */ - dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr); + dprintk("%s: short packet at entry %d\n", __func__, nr); entry[0] = entry[1] = 0; if (nr) goto out; diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index 5ccf7faee19..03599bfe81c 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -63,17 +63,17 @@ nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, }; int status; - dprintk("%s: call getattr\n", __FUNCTION__); + dprintk("%s: call getattr\n", __func__); nfs_fattr_init(fattr); status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0); - dprintk("%s: reply getattr: %d\n", __FUNCTION__, status); + dprintk("%s: reply getattr: %d\n", __func__, status); if (status) return status; - dprintk("%s: call statfs\n", __FUNCTION__); + dprintk("%s: call statfs\n", __func__); msg.rpc_proc = &nfs_procedures[NFSPROC_STATFS]; msg.rpc_resp = &fsinfo; status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0); - dprintk("%s: reply statfs: %d\n", __FUNCTION__, status); + dprintk("%s: reply statfs: %d\n", __func__, status); if (status) return status; info->rtmax = NFS_MAXDATA; diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 16f57e0af99..40d17987d0e 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -329,7 +329,7 @@ int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data) { int status; - dprintk("NFS: %s: %5u, (status %d)\n", __FUNCTION__, task->tk_pid, + dprintk("NFS: %s: %5u, (status %d)\n", __func__, task->tk_pid, task->tk_status); status = NFS_PROTO(data->inode)->read_done(task, data); diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 5ed86ac0fd9..2a4a024a4e7 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -405,7 +405,7 @@ static int nfs_statfs(struct dentry *dentry, struct kstatfs *buf) return 0; out_err: - dprintk("%s: statfs error = %d\n", __FUNCTION__, -error); + dprintk("%s: statfs error = %d\n", __func__, -error); unlock_kernel(); return error; } -- cgit v1.2.3 From 31f31db1a15671513df9cd9fbe56ef45ee1e9a2a Mon Sep 17 00:00:00 2001 From: Jan Blunck Date: Fri, 2 May 2008 13:42:45 -0700 Subject: nfs: path_{get,put}() cleanups Here are some more places where path_{get,put}() can be used instead of dput()/mntput() pair. Signed-off-by: Jan Blunck Cc: Trond Myklebust Cc: "J. Bruce Fields" Signed-off-by: Andrew Morton Signed-off-by: Trond Myklebust --- fs/nfs/inode.c | 3 +-- fs/nfs/namespace.c | 3 +-- fs/nfs/nfs4proc.c | 6 ++---- 3 files changed, 4 insertions(+), 8 deletions(-) (limited to 'fs') diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 421d338c698..596c5d8e86f 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -541,8 +541,7 @@ static void __put_nfs_open_context(struct nfs_open_context *ctx, int wait) } if (ctx->cred != NULL) put_rpccred(ctx->cred); - dput(ctx->path.dentry); - mntput(ctx->path.mnt); + path_put(&ctx->path); kfree(ctx); } diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index fca518006a5..2f285ef7639 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -137,8 +137,7 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd) goto out_follow; goto out_err; } - mntput(nd->path.mnt); - dput(nd->path.dentry); + path_put(&nd->path); nd->path.mnt = mnt; nd->path.dentry = dget(mnt->mnt_root); schedule_delayed_work(&nfs_automount_task, nfs_mountpoint_expiry_timeout); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f533318b005..1293e0acd82 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -306,8 +306,7 @@ static void nfs4_opendata_free(struct kref *kref) nfs4_put_open_state(p->state); nfs4_put_state_owner(p->owner); dput(p->dir); - dput(p->path.dentry); - mntput(p->path.mnt); + path_put(&p->path); kfree(p); } @@ -1210,8 +1209,7 @@ static void nfs4_free_closedata(void *data) nfs4_put_open_state(calldata->state); nfs_free_seqid(calldata->arg.seqid); nfs4_put_state_owner(sp); - dput(calldata->path.dentry); - mntput(calldata->path.mnt); + path_put(&calldata->path); kfree(calldata); } -- cgit v1.2.3 From 1d2e88e73ee0af52b0ed63b5fb8f42a919a4d9de Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Fri, 2 May 2008 13:42:45 -0700 Subject: nfs: make nfs4_drop_state_owner() static nfs4_drop_state_owner() can now become static. Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Trond Myklebust --- fs/nfs/nfs4_fs.h | 1 - fs/nfs/nfs4state.c | 2 +- 2 files changed, 1 insertion(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index bd1b9d663fb..ea790645fda 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -206,7 +206,6 @@ struct rpc_cred *nfs4_get_renew_cred(struct nfs_client *clp); extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *); extern void nfs4_put_state_owner(struct nfs4_state_owner *); -extern void nfs4_drop_state_owner(struct nfs4_state_owner *); extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); extern void nfs4_put_open_state(struct nfs4_state *); extern void nfs4_close_state(struct path *, struct nfs4_state *, mode_t); diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 5a1e02c8b75..856a8934f61 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -282,7 +282,7 @@ nfs4_alloc_state_owner(void) return sp; } -void +static void nfs4_drop_state_owner(struct nfs4_state_owner *sp) { if (!RB_EMPTY_NODE(&sp->so_client_node)) { -- cgit v1.2.3 From fec4585fd71cc5ec35d134e8c3854f6e8c4503f0 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Fri, 16 May 2008 13:06:30 +0400 Subject: CIFSGetDFSRefer cleanup + dfs_referral_level_3 fixed to conform REFERRAL_V3 the MS-DFSC spec. Signed-off-by: Igor Mammedov Signed-off-by: Steve French --- fs/cifs/cifspdu.h | 16 ++--- fs/cifs/cifssmb.c | 205 +++++++++++++++++++++++++++++++++++------------------- 2 files changed, 139 insertions(+), 82 deletions(-) (limited to 'fs') diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h index c43bf4b7a55..93d5ee02a25 100644 --- a/fs/cifs/cifspdu.h +++ b/fs/cifs/cifspdu.h @@ -1906,17 +1906,15 @@ typedef struct smb_com_transaction2_get_dfs_refer_req { typedef struct dfs_referral_level_3 { __le16 VersionNumber; - __le16 ReferralSize; - __le16 ServerType; /* 0x0001 = CIFS server */ - __le16 ReferralFlags; /* or proximity - not clear which since it is - always set to zero - SNIA spec says 0x01 - means strip off PathConsumed chars before - submitting RequestFileName to remote node */ - __le16 TimeToLive; - __le16 Proximity; + __le16 Size; + __le16 ServerType; /* 0x0001 = root targets; 0x0000 = link targets */ + __le16 ReferralEntryFlags; /* 0x0200 bit set only for domain + or DC referral responce */ + __le32 TimeToLive; __le16 DfsPathOffset; __le16 DfsAlternatePathOffset; - __le16 NetworkAddressOffset; + __le16 NetworkAddressOffset; /* offset of the link target */ + __le16 ServiceSiteGuid; } __attribute__((packed)) REFERRAL3; typedef struct smb_com_transaction_get_dfs_refer_rsp { diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index fc297383cb0..6f8ed93a4ae 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -81,6 +81,39 @@ static struct { #endif /* CONFIG_CIFS_WEAK_PW_HASH */ #endif /* CIFS_POSIX */ +/* Allocates buffer into dst and copies smb string from src to it. + * caller is responsible for freeing dst if function returned 0. + * returns: + * on success - 0 + * on failure - errno + */ +static int +cifs_strncpy_to_host(char **dst, const char *src, const int maxlen, + const bool is_unicode, const struct nls_table *nls_codepage) +{ + int plen; + + if (is_unicode) { + plen = UniStrnlen((wchar_t *)src, maxlen); + *dst = kmalloc(plen + 2, GFP_KERNEL); + if (!*dst) + goto cifs_strncpy_to_host_ErrExit; + cifs_strfromUCS_le(*dst, (__le16 *)src, plen, nls_codepage); + } else { + plen = strnlen(src, maxlen); + *dst = kmalloc(plen + 2, GFP_KERNEL); + if (!*dst) + goto cifs_strncpy_to_host_ErrExit; + strncpy(*dst, src, plen); + } + (*dst)[plen] = 0; + return 0; + +cifs_strncpy_to_host_ErrExit: + cERROR(1, ("Failed to allocate buffer for string\n")); + return -ENOMEM; +} + /* Mark as invalid, all open files on tree connections since they were closed when session to server was lost */ @@ -3867,6 +3900,96 @@ GetInodeNumOut: return rc; } +/* parses DFS refferal V3 structure + * caller is responsible for freeing target_nodes + * returns: + * on success - 0 + * on failure - errno + */ +static int +parse_DFS_REFERRALS(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, + unsigned int *num_of_nodes, + struct dfs_info3_param **target_nodes, + const struct nls_table *nls_codepage) +{ + int i, rc = 0; + char *data_end; + bool is_unicode; + struct dfs_referral_level_3 *ref; + + is_unicode = pSMBr->hdr.Flags2 & SMBFLG2_UNICODE; + *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); + + if (*num_of_nodes < 1) { + cERROR(1, ("num_referrals: must be at least > 0," + "but we get num_referrals = %d\n", *num_of_nodes)); + rc = -EINVAL; + goto parse_DFS_REFERRALS_exit; + } + + ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); + if (ref->VersionNumber != 3) { + cERROR(1, ("Referrals of V%d version are not supported," + "should be V3", ref->VersionNumber)); + rc = -EINVAL; + goto parse_DFS_REFERRALS_exit; + } + + /* get the upper boundary of the resp buffer */ + data_end = (char *)(&(pSMBr->PathConsumed)) + + le16_to_cpu(pSMBr->t2.DataCount); + + cFYI(1, ("num_referrals: %d dfs flags: 0x%x ... \n", + *num_of_nodes, + le16_to_cpu(pSMBr->DFSFlags))); + + *target_nodes = kzalloc(sizeof(struct dfs_info3_param) * + *num_of_nodes, GFP_KERNEL); + if (*target_nodes == NULL) { + cERROR(1, ("Failed to allocate buffer for target_nodes\n")); + rc = -ENOMEM; + goto parse_DFS_REFERRALS_exit; + } + + /* collect neccessary data from referrals */ + for (i = 0; i < *num_of_nodes; i++) { + char *temp; + int max_len; + struct dfs_info3_param *node = (*target_nodes)+i; + + node->flags = le16_to_cpu(pSMBr->DFSFlags); + node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); + node->server_type = le16_to_cpu(ref->ServerType); + node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); + + /* copy DfsPath */ + temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); + max_len = data_end - temp; + rc = cifs_strncpy_to_host(&(node->path_name), temp, + max_len, is_unicode, nls_codepage); + if (rc) + goto parse_DFS_REFERRALS_exit; + + /* copy link target UNC */ + temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); + max_len = data_end - temp; + rc = cifs_strncpy_to_host(&(node->node_name), temp, + max_len, is_unicode, nls_codepage); + if (rc) + goto parse_DFS_REFERRALS_exit; + + ref += ref->Size; + } + +parse_DFS_REFERRALS_exit: + if (rc) { + free_dfs_info_array(*target_nodes, *num_of_nodes); + *target_nodes = NULL; + *num_of_nodes = 0; + } + return rc; +} + int CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, const unsigned char *searchName, @@ -3877,12 +4000,9 @@ CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, /* TRANS2_GET_DFS_REFERRAL */ TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; - struct dfs_referral_level_3 *referrals = NULL; int rc = 0; int bytes_returned; int name_len; - unsigned int i; - char *temp; __u16 params, byte_count; *num_of_nodes = 0; *target_nodes = NULL; @@ -3960,80 +4080,19 @@ getDFSRetry: rc = validate_t2((struct smb_t2_rsp *)pSMBr); /* BB Also check if enough total bytes returned? */ - if (rc || (pSMBr->ByteCount < 17)) + if (rc || (pSMBr->ByteCount < 17)) { rc = -EIO; /* bad smb */ - else { - __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); - __u16 data_count = le16_to_cpu(pSMBr->t2.DataCount); - - cFYI(1, ("Decoding GetDFSRefer response BCC: %d Offset %d", - pSMBr->ByteCount, data_offset)); - referrals = - (struct dfs_referral_level_3 *) - (8 /* sizeof start of data block */ + - data_offset + - (char *) &pSMBr->hdr.Protocol); - cFYI(1, ("num_referrals: %d dfs flags: 0x%x ... \n" - "for referral one refer size: 0x%x srv " - "type: 0x%x refer flags: 0x%x ttl: 0x%x", - le16_to_cpu(pSMBr->NumberOfReferrals), - le16_to_cpu(pSMBr->DFSFlags), - le16_to_cpu(referrals->ReferralSize), - le16_to_cpu(referrals->ServerType), - le16_to_cpu(referrals->ReferralFlags), - le16_to_cpu(referrals->TimeToLive))); - /* BB This field is actually two bytes in from start of - data block so we could do safety check that DataBlock - begins at address of pSMBr->NumberOfReferrals */ - *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); - - /* BB Fix below so can return more than one referral */ - if (*num_of_nodes > 1) - *num_of_nodes = 1; - - /* get the length of the strings describing refs */ - name_len = 0; - for (i = 0; i < *num_of_nodes; i++) { - /* make sure that DfsPathOffset not past end */ - __u16 offset = le16_to_cpu(referrals->DfsPathOffset); - if (offset > data_count) { - /* if invalid referral, stop here and do - not try to copy any more */ - *num_of_nodes = i; - break; - } - temp = ((char *)referrals) + offset; + goto GetDFSRefExit; + } - if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { - name_len += UniStrnlen((wchar_t *)temp, - data_count); - } else { - name_len += strnlen(temp, data_count); - } - referrals++; - /* BB add check that referral pointer does - not fall off end PDU */ - } - /* BB add check for name_len bigger than bcc */ - *target_nodes = - kmalloc(name_len+1+(*num_of_nodes), - GFP_KERNEL); - if (*target_nodes == NULL) { - rc = -ENOMEM; - goto GetDFSRefExit; - } + cFYI(1, ("Decoding GetDFSRefer response BCC: %d Offset %d", + pSMBr->ByteCount, + le16_to_cpu(pSMBr->t2.DataOffset))); - referrals = (struct dfs_referral_level_3 *) - (8 /* sizeof data hdr */ + data_offset + - (char *) &pSMBr->hdr.Protocol); + /* parse returned result into more usable form */ + rc = parse_DFS_REFERRALS(pSMBr, num_of_nodes, + target_nodes, nls_codepage); - for (i = 0; i < *num_of_nodes; i++) { - temp = ((char *)referrals) + - le16_to_cpu(referrals->DfsPathOffset); - /* BB update target_uncs pointers */ - referrals++; - } - } GetDFSRefExit: if (pSMB) cifs_buf_release(pSMB); -- cgit v1.2.3 From a1fe78f16eac7d03d3c391dd5d54559826574982 Mon Sep 17 00:00:00 2001 From: Steve French Date: Fri, 16 May 2008 18:48:38 +0000 Subject: [CIFS] Add missing defines for DFS Also has minor cleanup of previous patch CC: Igor Mammedov Signed-off-by: Steve French --- fs/cifs/cifspdu.h | 9 +++++++++ fs/cifs/cifssmb.c | 17 +++++++++-------- 2 files changed, 18 insertions(+), 8 deletions(-) (limited to 'fs') diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h index 93d5ee02a25..65d58b4e6a6 100644 --- a/fs/cifs/cifspdu.h +++ b/fs/cifs/cifspdu.h @@ -1904,6 +1904,15 @@ typedef struct smb_com_transaction2_get_dfs_refer_req { char RequestFileName[1]; } __attribute__((packed)) TRANSACTION2_GET_DFS_REFER_REQ; +#define DFS_VERSION cpu_to_le16(0x0003) + +/* DFS server target type */ +#define DFS_TYPE_LINK 0x0000 /* also for sysvol targets */ +#define DFS_TYPE_ROOT 0x0001 + +/* Referral Entry Flags */ +#define DFS_NAME_LIST_REF 0x0200 + typedef struct dfs_referral_level_3 { __le16 VersionNumber; __le16 Size; diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 6f8ed93a4ae..7b9938445b0 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -107,6 +107,7 @@ cifs_strncpy_to_host(char **dst, const char *src, const int maxlen, strncpy(*dst, src, plen); } (*dst)[plen] = 0; + (*dst)[plen+1] = 0; /* harmless for ASCII case, needed for Unicode */ return 0; cifs_strncpy_to_host_ErrExit: @@ -3907,7 +3908,7 @@ GetInodeNumOut: * on failure - errno */ static int -parse_DFS_REFERRALS(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, +parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, unsigned int *num_of_nodes, struct dfs_info3_param **target_nodes, const struct nls_table *nls_codepage) @@ -3924,7 +3925,7 @@ parse_DFS_REFERRALS(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, cERROR(1, ("num_referrals: must be at least > 0," "but we get num_referrals = %d\n", *num_of_nodes)); rc = -EINVAL; - goto parse_DFS_REFERRALS_exit; + goto parse_DFS_referrals_exit; } ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); @@ -3932,7 +3933,7 @@ parse_DFS_REFERRALS(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, cERROR(1, ("Referrals of V%d version are not supported," "should be V3", ref->VersionNumber)); rc = -EINVAL; - goto parse_DFS_REFERRALS_exit; + goto parse_DFS_referrals_exit; } /* get the upper boundary of the resp buffer */ @@ -3948,7 +3949,7 @@ parse_DFS_REFERRALS(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, if (*target_nodes == NULL) { cERROR(1, ("Failed to allocate buffer for target_nodes\n")); rc = -ENOMEM; - goto parse_DFS_REFERRALS_exit; + goto parse_DFS_referrals_exit; } /* collect neccessary data from referrals */ @@ -3968,7 +3969,7 @@ parse_DFS_REFERRALS(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, rc = cifs_strncpy_to_host(&(node->path_name), temp, max_len, is_unicode, nls_codepage); if (rc) - goto parse_DFS_REFERRALS_exit; + goto parse_DFS_referrals_exit; /* copy link target UNC */ temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); @@ -3976,12 +3977,12 @@ parse_DFS_REFERRALS(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, rc = cifs_strncpy_to_host(&(node->node_name), temp, max_len, is_unicode, nls_codepage); if (rc) - goto parse_DFS_REFERRALS_exit; + goto parse_DFS_referrals_exit; ref += ref->Size; } -parse_DFS_REFERRALS_exit: +parse_DFS_referrals_exit: if (rc) { free_dfs_info_array(*target_nodes, *num_of_nodes); *target_nodes = NULL; @@ -4090,7 +4091,7 @@ getDFSRetry: le16_to_cpu(pSMBr->t2.DataOffset))); /* parse returned result into more usable form */ - rc = parse_DFS_REFERRALS(pSMBr, num_of_nodes, + rc = parse_DFS_referrals(pSMBr, num_of_nodes, target_nodes, nls_codepage); GetDFSRefExit: -- cgit v1.2.3 From f52111b1546943545e67573c4dde1c7613ca33d3 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 8 May 2008 18:19:16 -0400 Subject: [PATCH] take init_files to fs/file.c Signed-off-by: Al Viro --- arch/alpha/kernel/init_task.c | 1 - arch/arm/kernel/init_task.c | 1 - arch/avr32/kernel/init_task.c | 1 - arch/blackfin/kernel/init_task.c | 1 - arch/cris/kernel/process.c | 1 - arch/frv/kernel/init_task.c | 1 - arch/h8300/kernel/init_task.c | 1 - arch/ia64/kernel/init_task.c | 1 - arch/m32r/kernel/init_task.c | 1 - arch/m68k/kernel/process.c | 1 - arch/m68knommu/kernel/init_task.c | 1 - arch/mips/kernel/init_task.c | 1 - arch/mn10300/kernel/init_task.c | 1 - arch/parisc/kernel/init_task.c | 1 - arch/powerpc/kernel/init_task.c | 1 - arch/s390/kernel/init_task.c | 1 - arch/sh/kernel/init_task.c | 1 - arch/sparc/kernel/init_task.c | 1 - arch/sparc64/kernel/init_task.c | 1 - arch/um/kernel/init_task.c | 1 - arch/v850/kernel/init_task.c | 1 - arch/x86/kernel/init_task.c | 1 - arch/xtensa/kernel/init_task.c | 1 - fs/file.c | 13 +++++++++++++ include/linux/init_task.h | 23 +---------------------- 25 files changed, 14 insertions(+), 45 deletions(-) (limited to 'fs') diff --git a/arch/alpha/kernel/init_task.c b/arch/alpha/kernel/init_task.c index 835d09a7b33..1f762189fa6 100644 --- a/arch/alpha/kernel/init_task.c +++ b/arch/alpha/kernel/init_task.c @@ -9,7 +9,6 @@ static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/arm/kernel/init_task.c b/arch/arm/kernel/init_task.c index bd4ef53bc6b..8b8c9d38a76 100644 --- a/arch/arm/kernel/init_task.c +++ b/arch/arm/kernel/init_task.c @@ -13,7 +13,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/avr32/kernel/init_task.c b/arch/avr32/kernel/init_task.c index effcacf9d1a..44058469c6e 100644 --- a/arch/avr32/kernel/init_task.c +++ b/arch/avr32/kernel/init_task.c @@ -14,7 +14,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/blackfin/kernel/init_task.c b/arch/blackfin/kernel/init_task.c index c640154030e..6bdba7b2110 100644 --- a/arch/blackfin/kernel/init_task.c +++ b/arch/blackfin/kernel/init_task.c @@ -34,7 +34,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); diff --git a/arch/cris/kernel/process.c b/arch/cris/kernel/process.c index ef2db8fd102..5933656db5a 100644 --- a/arch/cris/kernel/process.c +++ b/arch/cris/kernel/process.c @@ -38,7 +38,6 @@ */ static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/frv/kernel/init_task.c b/arch/frv/kernel/init_task.c index 22993932b3f..e2198815b63 100644 --- a/arch/frv/kernel/init_task.c +++ b/arch/frv/kernel/init_task.c @@ -11,7 +11,6 @@ static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/h8300/kernel/init_task.c b/arch/h8300/kernel/init_task.c index 19272c2ac56..93a4899e46c 100644 --- a/arch/h8300/kernel/init_task.c +++ b/arch/h8300/kernel/init_task.c @@ -13,7 +13,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/ia64/kernel/init_task.c b/arch/ia64/kernel/init_task.c index bc8efcad28b..9d7e1c66faf 100644 --- a/arch/ia64/kernel/init_task.c +++ b/arch/ia64/kernel/init_task.c @@ -18,7 +18,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/m32r/kernel/init_task.c b/arch/m32r/kernel/init_task.c index 9e508fd9d97..0d658dbb676 100644 --- a/arch/m32r/kernel/init_task.c +++ b/arch/m32r/kernel/init_task.c @@ -12,7 +12,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c index 5de4e4ed76a..7888cdf91f5 100644 --- a/arch/m68k/kernel/process.c +++ b/arch/m68k/kernel/process.c @@ -41,7 +41,6 @@ * setup. */ static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/m68knommu/kernel/init_task.c b/arch/m68knommu/kernel/init_task.c index 3897043a126..344c01aede0 100644 --- a/arch/m68knommu/kernel/init_task.c +++ b/arch/m68knommu/kernel/init_task.c @@ -13,7 +13,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/mips/kernel/init_task.c b/arch/mips/kernel/init_task.c index aeda7f58391..d72487ad7c1 100644 --- a/arch/mips/kernel/init_task.c +++ b/arch/mips/kernel/init_task.c @@ -10,7 +10,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/mn10300/kernel/init_task.c b/arch/mn10300/kernel/init_task.c index 39fe6882dd1..af16f6e5c91 100644 --- a/arch/mn10300/kernel/init_task.c +++ b/arch/mn10300/kernel/init_task.c @@ -19,7 +19,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/parisc/kernel/init_task.c b/arch/parisc/kernel/init_task.c index 26198a074d6..f5941c08655 100644 --- a/arch/parisc/kernel/init_task.c +++ b/arch/parisc/kernel/init_task.c @@ -35,7 +35,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/powerpc/kernel/init_task.c b/arch/powerpc/kernel/init_task.c index 941043ae040..4c85b8d5647 100644 --- a/arch/powerpc/kernel/init_task.c +++ b/arch/powerpc/kernel/init_task.c @@ -8,7 +8,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/s390/kernel/init_task.c b/arch/s390/kernel/init_task.c index d494161b05b..7ad00396925 100644 --- a/arch/s390/kernel/init_task.c +++ b/arch/s390/kernel/init_task.c @@ -17,7 +17,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/sh/kernel/init_task.c b/arch/sh/kernel/init_task.c index f9bcc606127..b151a25cb14 100644 --- a/arch/sh/kernel/init_task.c +++ b/arch/sh/kernel/init_task.c @@ -8,7 +8,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct pt_regs fake_swapper_regs; diff --git a/arch/sparc/kernel/init_task.c b/arch/sparc/kernel/init_task.c index d9d4f96360c..8e64ebc445e 100644 --- a/arch/sparc/kernel/init_task.c +++ b/arch/sparc/kernel/init_task.c @@ -9,7 +9,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/sparc64/kernel/init_task.c b/arch/sparc64/kernel/init_task.c index 90007cf88ba..d2b312381c1 100644 --- a/arch/sparc64/kernel/init_task.c +++ b/arch/sparc64/kernel/init_task.c @@ -10,7 +10,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/um/kernel/init_task.c b/arch/um/kernel/init_task.c index dcfceca9505..910eda8fca1 100644 --- a/arch/um/kernel/init_task.c +++ b/arch/um/kernel/init_task.c @@ -12,7 +12,6 @@ static struct fs_struct init_fs = INIT_FS; struct mm_struct init_mm = INIT_MM(init_mm); -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); EXPORT_SYMBOL(init_mm); diff --git a/arch/v850/kernel/init_task.c b/arch/v850/kernel/init_task.c index ed2f93cf7c6..44b274dff33 100644 --- a/arch/v850/kernel/init_task.c +++ b/arch/v850/kernel/init_task.c @@ -21,7 +21,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS (init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM (init_mm); diff --git a/arch/x86/kernel/init_task.c b/arch/x86/kernel/init_task.c index 3d01e47777d..a4f93b4120c 100644 --- a/arch/x86/kernel/init_task.c +++ b/arch/x86/kernel/init_task.c @@ -11,7 +11,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/arch/xtensa/kernel/init_task.c b/arch/xtensa/kernel/init_task.c index 021b4f46ff9..3df469dbe81 100644 --- a/arch/xtensa/kernel/init_task.c +++ b/arch/xtensa/kernel/init_task.c @@ -22,7 +22,6 @@ #include static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); diff --git a/fs/file.c b/fs/file.c index 4c6f0ea12c4..754cd05b06a 100644 --- a/fs/file.c +++ b/fs/file.c @@ -275,3 +275,16 @@ void __init files_defer_init(void) for_each_possible_cpu(i) fdtable_defer_list_init(i); } + +struct files_struct init_files = { + .count = ATOMIC_INIT(1), + .fdt = &init_files.fdtab, + .fdtab = { + .max_fds = NR_OPEN_DEFAULT, + .fd = &init_files.fd_array[0], + .close_on_exec = (fd_set *)&init_files.close_on_exec_init, + .open_fds = (fd_set *)&init_files.open_fds_init, + .rcu = RCU_HEAD_INIT, + }, + .file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock), +}; diff --git a/include/linux/init_task.h b/include/linux/init_task.h index b24c2875aa0..9927a88674a 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -1,7 +1,6 @@ #ifndef _LINUX__INIT_TASK_H #define _LINUX__INIT_TASK_H -#include #include #include #include @@ -12,27 +11,7 @@ #include #include -#define INIT_FDTABLE \ -{ \ - .max_fds = NR_OPEN_DEFAULT, \ - .fd = &init_files.fd_array[0], \ - .close_on_exec = (fd_set *)&init_files.close_on_exec_init, \ - .open_fds = (fd_set *)&init_files.open_fds_init, \ - .rcu = RCU_HEAD_INIT, \ - .next = NULL, \ -} - -#define INIT_FILES \ -{ \ - .count = ATOMIC_INIT(1), \ - .fdt = &init_files.fdtab, \ - .fdtab = INIT_FDTABLE, \ - .file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock), \ - .next_fd = 0, \ - .close_on_exec_init = { { 0, } }, \ - .open_fds_init = { { 0, } }, \ - .fd_array = { NULL, } \ -} +extern struct files_struct init_files; #define INIT_KIOCTX(name, which_mm) \ { \ -- cgit v1.2.3 From 02afc6267f6d55d47aba9fcafdbd1b7230d2294a Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 8 May 2008 19:42:56 -0400 Subject: [PATCH] dup_fd() fixes, part 1 Move the sucker to fs/file.c in preparation to the rest Signed-off-by: Al Viro --- fs/file.c | 130 ++++++++++++++++++++++++++++++++++++++++++++++++ include/linux/fdtable.h | 1 + kernel/fork.c | 130 ------------------------------------------------ 3 files changed, 131 insertions(+), 130 deletions(-) (limited to 'fs') diff --git a/fs/file.c b/fs/file.c index 754cd05b06a..7dbadaaf00f 100644 --- a/fs/file.c +++ b/fs/file.c @@ -261,6 +261,136 @@ int expand_files(struct files_struct *files, int nr) return expand_fdtable(files, nr); } +static int count_open_files(struct fdtable *fdt) +{ + int size = fdt->max_fds; + int i; + + /* Find the last open fd */ + for (i = size/(8*sizeof(long)); i > 0; ) { + if (fdt->open_fds->fds_bits[--i]) + break; + } + i = (i+1) * 8 * sizeof(long); + return i; +} + +static struct files_struct *alloc_files(void) +{ + struct files_struct *newf; + struct fdtable *fdt; + + newf = kmem_cache_alloc(files_cachep, GFP_KERNEL); + if (!newf) + goto out; + + atomic_set(&newf->count, 1); + + spin_lock_init(&newf->file_lock); + newf->next_fd = 0; + fdt = &newf->fdtab; + fdt->max_fds = NR_OPEN_DEFAULT; + fdt->close_on_exec = (fd_set *)&newf->close_on_exec_init; + fdt->open_fds = (fd_set *)&newf->open_fds_init; + fdt->fd = &newf->fd_array[0]; + INIT_RCU_HEAD(&fdt->rcu); + fdt->next = NULL; + rcu_assign_pointer(newf->fdt, fdt); +out: + return newf; +} + +/* + * Allocate a new files structure and copy contents from the + * passed in files structure. + * errorp will be valid only when the returned files_struct is NULL. + */ +struct files_struct *dup_fd(struct files_struct *oldf, int *errorp) +{ + struct files_struct *newf; + struct file **old_fds, **new_fds; + int open_files, size, i; + struct fdtable *old_fdt, *new_fdt; + + *errorp = -ENOMEM; + newf = alloc_files(); + if (!newf) + goto out; + + spin_lock(&oldf->file_lock); + old_fdt = files_fdtable(oldf); + new_fdt = files_fdtable(newf); + open_files = count_open_files(old_fdt); + + /* + * Check whether we need to allocate a larger fd array and fd set. + * Note: we're not a clone task, so the open count won't change. + */ + if (open_files > new_fdt->max_fds) { + new_fdt->max_fds = 0; + spin_unlock(&oldf->file_lock); + spin_lock(&newf->file_lock); + *errorp = expand_files(newf, open_files-1); + spin_unlock(&newf->file_lock); + if (*errorp < 0) + goto out_release; + new_fdt = files_fdtable(newf); + /* + * Reacquire the oldf lock and a pointer to its fd table + * who knows it may have a new bigger fd table. We need + * the latest pointer. + */ + spin_lock(&oldf->file_lock); + old_fdt = files_fdtable(oldf); + } + + old_fds = old_fdt->fd; + new_fds = new_fdt->fd; + + memcpy(new_fdt->open_fds->fds_bits, + old_fdt->open_fds->fds_bits, open_files/8); + memcpy(new_fdt->close_on_exec->fds_bits, + old_fdt->close_on_exec->fds_bits, open_files/8); + + for (i = open_files; i != 0; i--) { + struct file *f = *old_fds++; + if (f) { + get_file(f); + } else { + /* + * The fd may be claimed in the fd bitmap but not yet + * instantiated in the files array if a sibling thread + * is partway through open(). So make sure that this + * fd is available to the new process. + */ + FD_CLR(open_files - i, new_fdt->open_fds); + } + rcu_assign_pointer(*new_fds++, f); + } + spin_unlock(&oldf->file_lock); + + /* compute the remainder to be cleared */ + size = (new_fdt->max_fds - open_files) * sizeof(struct file *); + + /* This is long word aligned thus could use a optimized version */ + memset(new_fds, 0, size); + + if (new_fdt->max_fds > open_files) { + int left = (new_fdt->max_fds-open_files)/8; + int start = open_files / (8 * sizeof(unsigned long)); + + memset(&new_fdt->open_fds->fds_bits[start], 0, left); + memset(&new_fdt->close_on_exec->fds_bits[start], 0, left); + } + + return newf; + +out_release: + kmem_cache_free(files_cachep, newf); +out: + return NULL; +} + static void __devinit fdtable_defer_list_init(int cpu) { struct fdtable_defer *fddef = &per_cpu(fdtable_defer_list, cpu); diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h index a118f3c0b24..4aab6f12cfa 100644 --- a/include/linux/fdtable.h +++ b/include/linux/fdtable.h @@ -93,6 +93,7 @@ struct files_struct *get_files_struct(struct task_struct *); void put_files_struct(struct files_struct *fs); void reset_files_struct(struct files_struct *); int unshare_files(struct files_struct **); +struct files_struct *dup_fd(struct files_struct *, int *); extern struct kmem_cache *files_cachep; diff --git a/kernel/fork.c b/kernel/fork.c index 933e60ebcca..19908b26cf8 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -660,136 +660,6 @@ static int copy_fs(unsigned long clone_flags, struct task_struct *tsk) return 0; } -static int count_open_files(struct fdtable *fdt) -{ - int size = fdt->max_fds; - int i; - - /* Find the last open fd */ - for (i = size/(8*sizeof(long)); i > 0; ) { - if (fdt->open_fds->fds_bits[--i]) - break; - } - i = (i+1) * 8 * sizeof(long); - return i; -} - -static struct files_struct *alloc_files(void) -{ - struct files_struct *newf; - struct fdtable *fdt; - - newf = kmem_cache_alloc(files_cachep, GFP_KERNEL); - if (!newf) - goto out; - - atomic_set(&newf->count, 1); - - spin_lock_init(&newf->file_lock); - newf->next_fd = 0; - fdt = &newf->fdtab; - fdt->max_fds = NR_OPEN_DEFAULT; - fdt->close_on_exec = (fd_set *)&newf->close_on_exec_init; - fdt->open_fds = (fd_set *)&newf->open_fds_init; - fdt->fd = &newf->fd_array[0]; - INIT_RCU_HEAD(&fdt->rcu); - fdt->next = NULL; - rcu_assign_pointer(newf->fdt, fdt); -out: - return newf; -} - -/* - * Allocate a new files structure and copy contents from the - * passed in files structure. - * errorp will be valid only when the returned files_struct is NULL. - */ -static struct files_struct *dup_fd(struct files_struct *oldf, int *errorp) -{ - struct files_struct *newf; - struct file **old_fds, **new_fds; - int open_files, size, i; - struct fdtable *old_fdt, *new_fdt; - - *errorp = -ENOMEM; - newf = alloc_files(); - if (!newf) - goto out; - - spin_lock(&oldf->file_lock); - old_fdt = files_fdtable(oldf); - new_fdt = files_fdtable(newf); - open_files = count_open_files(old_fdt); - - /* - * Check whether we need to allocate a larger fd array and fd set. - * Note: we're not a clone task, so the open count won't change. - */ - if (open_files > new_fdt->max_fds) { - new_fdt->max_fds = 0; - spin_unlock(&oldf->file_lock); - spin_lock(&newf->file_lock); - *errorp = expand_files(newf, open_files-1); - spin_unlock(&newf->file_lock); - if (*errorp < 0) - goto out_release; - new_fdt = files_fdtable(newf); - /* - * Reacquire the oldf lock and a pointer to its fd table - * who knows it may have a new bigger fd table. We need - * the latest pointer. - */ - spin_lock(&oldf->file_lock); - old_fdt = files_fdtable(oldf); - } - - old_fds = old_fdt->fd; - new_fds = new_fdt->fd; - - memcpy(new_fdt->open_fds->fds_bits, - old_fdt->open_fds->fds_bits, open_files/8); - memcpy(new_fdt->close_on_exec->fds_bits, - old_fdt->close_on_exec->fds_bits, open_files/8); - - for (i = open_files; i != 0; i--) { - struct file *f = *old_fds++; - if (f) { - get_file(f); - } else { - /* - * The fd may be claimed in the fd bitmap but not yet - * instantiated in the files array if a sibling thread - * is partway through open(). So make sure that this - * fd is available to the new process. - */ - FD_CLR(open_files - i, new_fdt->open_fds); - } - rcu_assign_pointer(*new_fds++, f); - } - spin_unlock(&oldf->file_lock); - - /* compute the remainder to be cleared */ - size = (new_fdt->max_fds - open_files) * sizeof(struct file *); - - /* This is long word aligned thus could use a optimized version */ - memset(new_fds, 0, size); - - if (new_fdt->max_fds > open_files) { - int left = (new_fdt->max_fds-open_files)/8; - int start = open_files / (8 * sizeof(unsigned long)); - - memset(&new_fdt->open_fds->fds_bits[start], 0, left); - memset(&new_fdt->close_on_exec->fds_bits[start], 0, left); - } - - return newf; - -out_release: - kmem_cache_free(files_cachep, newf); -out: - return NULL; -} - static int copy_files(unsigned long clone_flags, struct task_struct * tsk) { struct files_struct *oldf, *newf; -- cgit v1.2.3 From 9dec3c4d306b09b31331e475e895bb9674e16d81 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 8 May 2008 21:02:45 -0400 Subject: [PATCH] dup_fd() part 2 use alloc_fdtable() instead of expand_files(), get rid of pointless grabbing newf->file_lock, kill magic in copy_fdtable() that used to be there only to skip copying when called from dup_fd(). Signed-off-by: Al Viro --- fs/file.c | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) (limited to 'fs') diff --git a/fs/file.c b/fs/file.c index 7dbadaaf00f..6491b2b5bc3 100644 --- a/fs/file.c +++ b/fs/file.c @@ -119,8 +119,6 @@ static void copy_fdtable(struct fdtable *nfdt, struct fdtable *ofdt) unsigned int cpy, set; BUG_ON(nfdt->max_fds < ofdt->max_fds); - if (ofdt->max_fds == 0) - return; cpy = ofdt->max_fds * sizeof(struct file *); set = (nfdt->max_fds - ofdt->max_fds) * sizeof(struct file *); @@ -327,14 +325,24 @@ struct files_struct *dup_fd(struct files_struct *oldf, int *errorp) * Note: we're not a clone task, so the open count won't change. */ if (open_files > new_fdt->max_fds) { - new_fdt->max_fds = 0; spin_unlock(&oldf->file_lock); - spin_lock(&newf->file_lock); - *errorp = expand_files(newf, open_files-1); - spin_unlock(&newf->file_lock); - if (*errorp < 0) + + new_fdt = alloc_fdtable(open_files - 1); + if (!new_fdt) { + *errorp = -ENOMEM; + goto out_release; + } + + /* beyond sysctl_nr_open; nothing to do */ + if (unlikely(new_fdt->max_fds < open_files)) { + free_fdarr(new_fdt); + free_fdset(new_fdt); + kfree(new_fdt); + *errorp = -EMFILE; goto out_release; - new_fdt = files_fdtable(newf); + } + rcu_assign_pointer(files->fdt, new_fdt); + /* * Reacquire the oldf lock and a pointer to its fd table * who knows it may have a new bigger fd table. We need -- cgit v1.2.3 From afbec7fff4928c273a1f1bb14dfdfdf62688a193 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 8 May 2008 21:11:17 -0400 Subject: [PATCH] dup_fd() - part 3 merge alloc_files() into dup_fd(), leave setting newf->fdt until the end Signed-off-by: Al Viro --- fs/file.c | 43 +++++++++++++++---------------------------- 1 file changed, 15 insertions(+), 28 deletions(-) (limited to 'fs') diff --git a/fs/file.c b/fs/file.c index 6491b2b5bc3..689d2b6947e 100644 --- a/fs/file.c +++ b/fs/file.c @@ -273,31 +273,6 @@ static int count_open_files(struct fdtable *fdt) return i; } -static struct files_struct *alloc_files(void) -{ - struct files_struct *newf; - struct fdtable *fdt; - - newf = kmem_cache_alloc(files_cachep, GFP_KERNEL); - if (!newf) - goto out; - - atomic_set(&newf->count, 1); - - spin_lock_init(&newf->file_lock); - newf->next_fd = 0; - fdt = &newf->fdtab; - fdt->max_fds = NR_OPEN_DEFAULT; - fdt->close_on_exec = (fd_set *)&newf->close_on_exec_init; - fdt->open_fds = (fd_set *)&newf->open_fds_init; - fdt->fd = &newf->fd_array[0]; - INIT_RCU_HEAD(&fdt->rcu); - fdt->next = NULL; - rcu_assign_pointer(newf->fdt, fdt); -out: - return newf; -} - /* * Allocate a new files structure and copy contents from the * passed in files structure. @@ -311,13 +286,24 @@ struct files_struct *dup_fd(struct files_struct *oldf, int *errorp) struct fdtable *old_fdt, *new_fdt; *errorp = -ENOMEM; - newf = alloc_files(); + newf = kmem_cache_alloc(files_cachep, GFP_KERNEL); if (!newf) goto out; + atomic_set(&newf->count, 1); + + spin_lock_init(&newf->file_lock); + newf->next_fd = 0; + new_fdt = &newf->fdtab; + new_fdt->max_fds = NR_OPEN_DEFAULT; + new_fdt->close_on_exec = (fd_set *)&newf->close_on_exec_init; + new_fdt->open_fds = (fd_set *)&newf->open_fds_init; + new_fdt->fd = &newf->fd_array[0]; + INIT_RCU_HEAD(&new_fdt->rcu); + new_fdt->next = NULL; + spin_lock(&oldf->file_lock); old_fdt = files_fdtable(oldf); - new_fdt = files_fdtable(newf); open_files = count_open_files(old_fdt); /* @@ -341,7 +327,6 @@ struct files_struct *dup_fd(struct files_struct *oldf, int *errorp) *errorp = -EMFILE; goto out_release; } - rcu_assign_pointer(files->fdt, new_fdt); /* * Reacquire the oldf lock and a pointer to its fd table @@ -391,6 +376,8 @@ struct files_struct *dup_fd(struct files_struct *oldf, int *errorp) memset(&new_fdt->close_on_exec->fds_bits[start], 0, left); } + rcu_assign_pointer(newf->fdt, new_fdt); + return newf; out_release: -- cgit v1.2.3 From adbecb128cd2cc5d14b0ebef6d020ced0efd0ec6 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 8 May 2008 21:19:42 -0400 Subject: [PATCH] dup_fd() part 4 - race fix Parent _can_ be a clone task, contrary to the comment. Moreover, more files could be opened while we allocate a copy, in which case we end up copying only part into new descriptor table. Since what we get _is_ affected by all changes in the old range, we can get rather weird effects - e.g. dup2(0, 1024); close(0); in parallel with fork() resulting in child that sees the effect of close(), but not that of dup2() done just before that close(). What we need is to recalculate the open_count after having reacquired ->file_lock and if external fdtable we'd just allocated is too small for it, free the sucker and redo allocation. Signed-off-by: Al Viro --- fs/file.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/file.c b/fs/file.c index 689d2b6947e..0f705c7cfef 100644 --- a/fs/file.c +++ b/fs/file.c @@ -308,11 +308,16 @@ struct files_struct *dup_fd(struct files_struct *oldf, int *errorp) /* * Check whether we need to allocate a larger fd array and fd set. - * Note: we're not a clone task, so the open count won't change. */ - if (open_files > new_fdt->max_fds) { + while (unlikely(open_files > new_fdt->max_fds)) { spin_unlock(&oldf->file_lock); + if (new_fdt != &newf->fdtab) { + free_fdarr(new_fdt); + free_fdset(new_fdt); + kfree(new_fdt); + } + new_fdt = alloc_fdtable(open_files - 1); if (!new_fdt) { *errorp = -ENOMEM; @@ -335,6 +340,7 @@ struct files_struct *dup_fd(struct files_struct *oldf, int *errorp) */ spin_lock(&oldf->file_lock); old_fdt = files_fdtable(oldf); + open_files = count_open_files(old_fdt); } old_fds = old_fdt->fd; -- cgit v1.2.3 From eceea0b3df05ed262ae32e0c6340cc7a3626632d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 10 May 2008 10:08:32 -0400 Subject: [PATCH] avoid multiplication overflows and signedness issues for max_fds Limit sysctl_nr_open - we don't want ->max_fds to exceed MAX_INT and we don't want size calculation for ->fd[] to overflow. Signed-off-by: Al Viro --- fs/file.c | 4 ++++ kernel/sysctl.c | 5 ++++- 2 files changed, 8 insertions(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/file.c b/fs/file.c index 0f705c7cfef..7b3887e054d 100644 --- a/fs/file.c +++ b/fs/file.c @@ -26,6 +26,8 @@ struct fdtable_defer { }; int sysctl_nr_open __read_mostly = 1024*1024; +int sysctl_nr_open_min = BITS_PER_LONG; +int sysctl_nr_open_max = 1024 * 1024; /* raised later */ /* * We use this list to defer free fdtables that have vmalloced @@ -405,6 +407,8 @@ void __init files_defer_init(void) int i; for_each_possible_cpu(i) fdtable_defer_list_init(i); + sysctl_nr_open_max = min((size_t)INT_MAX, ~(size_t)0/sizeof(void *)) & + -BITS_PER_LONG; } struct files_struct init_files = { diff --git a/kernel/sysctl.c b/kernel/sysctl.c index d7ffdc59816..29116652dca 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -81,6 +81,7 @@ extern int compat_log; extern int maps_protect; extern int sysctl_stat_interval; extern int latencytop_enabled; +extern int sysctl_nr_open_min, sysctl_nr_open_max; /* Constants used for minimum and maximum */ #if defined(CONFIG_DETECT_SOFTLOCKUP) || defined(CONFIG_HIGHMEM) @@ -1190,7 +1191,9 @@ static struct ctl_table fs_table[] = { .data = &sysctl_nr_open, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = &proc_dointvec, + .proc_handler = &proc_dointvec_minmax, + .extra1 = &sysctl_nr_open_min, + .extra2 = &sysctl_nr_open_max, }, { .ctl_name = FS_DENTRY, -- cgit v1.2.3 From 5f719558edf9c84bfbb1f7ad37e84c483282d09f Mon Sep 17 00:00:00 2001 From: WANG Cong Date: Tue, 6 May 2008 12:45:35 +0800 Subject: [Patch] fs/binfmt_elf.c: fix a wrong free In kmalloc failing path, we shouldn't free pointers in 'info', because the struct 'info' is uninitilized when kmalloc is called. And when kmalloc returns NULL, it's needless to kfree it. Signed-off-by: WANG Cong Cc: Alexander Viro Reviewed-by: Pekka Enberg -- Signed-off-by: Al Viro --- fs/binfmt_elf.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index b25707fee2c..bd08332079c 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -1900,7 +1900,7 @@ static int elf_core_dump(long signr, struct pt_regs *regs, struct file *file, un /* alloc memory for large data structures: too large to be on stack */ elf = kmalloc(sizeof(*elf), GFP_KERNEL); if (!elf) - goto cleanup; + goto out; segs = current->mm->map_count; #ifdef ELF_CORE_EXTRA_PHDRS @@ -2034,8 +2034,9 @@ end_coredump: set_fs(fs); cleanup: - kfree(elf); free_note_info(&info); + kfree(elf); +out: return has_dumped; } -- cgit v1.2.3 From 08a6fac1c63233c87eec129938022f1a9a4d51f6 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 10 May 2008 16:38:25 -0400 Subject: [PATCH] get rid of leak in compat_execve() Even though copy_compat_strings() doesn't cache the pages, copy_strings_kernel() and stuff indirectly called by e.g. ->load_binary() is doing that, so we need to drop the cache contents in the end. [found by WANG Cong ] Signed-off-by: Al Viro --- fs/compat.c | 4 ++-- fs/exec.c | 12 ++++++++---- include/linux/binfmts.h | 1 + 3 files changed, 11 insertions(+), 6 deletions(-) (limited to 'fs') diff --git a/fs/compat.c b/fs/compat.c index 332a869d2c5..ed43e17a5dc 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -1405,7 +1405,7 @@ int compat_do_execve(char * filename, /* execve success */ security_bprm_free(bprm); acct_update_integrals(current); - kfree(bprm); + free_bprm(bprm); return retval; } @@ -1424,7 +1424,7 @@ out_file: } out_kfree: - kfree(bprm); + free_bprm(bprm); out_ret: return retval; diff --git a/fs/exec.c b/fs/exec.c index 1f8a24aa1f8..3c2ba7ce11d 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1251,6 +1251,12 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs) EXPORT_SYMBOL(search_binary_handler); +void free_bprm(struct linux_binprm *bprm) +{ + free_arg_pages(bprm); + kfree(bprm); +} + /* * sys_execve() executes a new program. */ @@ -1320,17 +1326,15 @@ int do_execve(char * filename, retval = search_binary_handler(bprm,regs); if (retval >= 0) { /* execve success */ - free_arg_pages(bprm); security_bprm_free(bprm); acct_update_integrals(current); - kfree(bprm); + free_bprm(bprm); if (displaced) put_files_struct(displaced); return retval; } out: - free_arg_pages(bprm); if (bprm->security) security_bprm_free(bprm); @@ -1344,7 +1348,7 @@ out_file: fput(bprm->file); } out_kfree: - kfree(bprm); + free_bprm(bprm); out_files: if (displaced) diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index b512e48f6d8..ee0ed48e834 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -99,6 +99,7 @@ extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm); extern void compute_creds(struct linux_binprm *binprm); extern int do_coredump(long signr, int exit_code, struct pt_regs * regs); extern int set_binfmt(struct linux_binfmt *new); +extern void free_bprm(struct linux_binprm *); #endif /* __KERNEL__ */ #endif /* _LINUX_BINFMTS_H */ -- cgit v1.2.3 From 23c4971e3d97de4e1b7961ca6eacee35aa15ce5f Mon Sep 17 00:00:00 2001 From: WANG Cong Date: Thu, 8 May 2008 21:52:33 +0800 Subject: [Patch] fs/binfmt_elf.c: fix wrong return values create_elf_tables() returns 0 on success. But when strnlen_user() "fails", it returns 0 directly. So this is wrong. Signed-off-by: WANG Cong Cc: Alexander Viro Signed-off-by: Al Viro --- fs/binfmt_elf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index bd08332079c..0fa95b198e6 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -256,7 +256,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec, return -EFAULT; len = strnlen_user((void __user *)p, MAX_ARG_STRLEN); if (!len || len > MAX_ARG_STRLEN) - return 0; + return -EINVAL; p += len; } if (__put_user(0, argv)) @@ -268,7 +268,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec, return -EFAULT; len = strnlen_user((void __user *)p, MAX_ARG_STRLEN); if (!len || len > MAX_ARG_STRLEN) - return 0; + return -EINVAL; p += len; } if (__put_user(0, envp)) -- cgit v1.2.3 From e9baf6e59842285bcf9570f5094e4c27674a0f7c Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 15 May 2008 04:49:12 -0400 Subject: [PATCH] return to old errno choice in mkdir() et.al. In case when both EEXIST and EROFS would apply we used to return the former in mkdir(2) and friends. Lest anyone suspects us of being consistent, in the same situation knfsd gave clients nfs_erofs... ro-bind series had switched the syscall side of things to returning -EROFS and immediately broke an application - namely, mkdir -p. Patch restores the original behaviour... Signed-off-by: Al Viro --- fs/namei.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'fs') diff --git a/fs/namei.c b/fs/namei.c index 32fd9655485..c7e43536c49 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2003,18 +2003,22 @@ struct dentry *lookup_create(struct nameidata *nd, int is_dir) if (IS_ERR(dentry)) goto fail; + if (dentry->d_inode) + goto eexist; /* * Special case - lookup gave negative, but... we had foo/bar/ * From the vfs_mknod() POV we just have a negative dentry - * all is fine. Let's be bastards - you had / on the end, you've * been asking for (non-existent) directory. -ENOENT for you. */ - if (!is_dir && nd->last.name[nd->last.len] && !dentry->d_inode) - goto enoent; + if (unlikely(!is_dir && nd->last.name[nd->last.len])) { + dput(dentry); + dentry = ERR_PTR(-ENOENT); + } return dentry; -enoent: +eexist: dput(dentry); - dentry = ERR_PTR(-ENOENT); + dentry = ERR_PTR(-EEXIST); fail: return dentry; } -- cgit v1.2.3 From 2b280fab12b6697b6a7a24a13aaf9f4339edd075 Mon Sep 17 00:00:00 2001 From: Steve French Date: Sat, 17 May 2008 03:12:45 +0000 Subject: [CIFS] add more complete mount options to cifs_show_options adds various options to cifs_show_options (displayed when you cat /proc/mounts with a cifs mount). I limited the new ones to values that are associated with the mount with the exception of "seal" (which is a per tree connection property, but I thought was important enough to show through). Eventually cifs's parse_mount_options also needs to be rewritten to use the match_token API but that would be a big enough change that I would prefer that changing parse_mount_options wait until next release. Signed-off-by: Steve French --- fs/cifs/cifsfs.c | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index b6436b888cf..57e40c49d3b 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -1,7 +1,7 @@ /* * fs/cifs/cifsfs.c * - * Copyright (C) International Business Machines Corp., 2002,2007 + * Copyright (C) International Business Machines Corp., 2002,2008 * Author(s): Steve French (sfrench@us.ibm.com) * * Common Internet FileSystem (CIFS) client @@ -353,9 +353,38 @@ cifs_show_options(struct seq_file *s, struct vfsmount *m) if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) || !(cifs_sb->tcon->unix_ext)) seq_printf(s, ",gid=%d", cifs_sb->mnt_gid); + if (!cifs_sb->tcon->unix_ext) { + seq_printf(s, ",file_mode=0%o,dir_mode=0%o", + cifs_sb->mnt_file_mode, + cifs_sb->mnt_dir_mode); + } + if (cifs_sb->tcon->seal) + seq_printf(s, ",seal"); + seq_printf(s, ",nocase"); } if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) seq_printf(s, ",posixpaths"); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) + seq_printf(s, ",setuids"); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) + seq_printf(s, ",serverino"); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) + seq_printf(s, ",directio"); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) + seq_printf(s, ",nouser_xattr"); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR) + seq_printf(s, ",mapchars"); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) + seq_printf(s, ",sfu"); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) + seq_printf(s, ",nobrl"); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) + seq_printf(s, ",cifsacl"); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) + seq_printf(s, ",dynperm"); + if (m->mnt_sb->s_flags & MS_POSIXACL) + seq_printf(s, ",acl"); + seq_printf(s, ",rsize=%d", cifs_sb->rsize); seq_printf(s, ",wsize=%d", cifs_sb->wsize); } -- cgit v1.2.3 From 6ee650467d5bf972d10441e99688e9b48171f99c Mon Sep 17 00:00:00 2001 From: Steve Grubb Date: Tue, 29 Apr 2008 15:01:13 -0400 Subject: [PATCH] open sessionid permissions The current permissions on sessionid are a little too restrictive. Signed-off-by: Steve Grubb Signed-off-by: Al Viro --- fs/proc/base.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/proc/base.c b/fs/proc/base.c index 808cbdc193d..c447e0743a3 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2441,7 +2441,7 @@ static const struct pid_entry tgid_base_stuff[] = { REG("oom_adj", S_IRUGO|S_IWUSR, oom_adjust), #ifdef CONFIG_AUDITSYSCALL REG("loginuid", S_IWUSR|S_IRUGO, loginuid), - REG("sessionid", S_IRUSR, sessionid), + REG("sessionid", S_IRUGO, sessionid), #endif #ifdef CONFIG_FAULT_INJECTION REG("make-it-fail", S_IRUGO|S_IWUSR, fault_inject), -- cgit v1.2.3 From 88dd0be3874566796fa4ffbdf927a53c4a6a2f4b Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Mon, 5 May 2008 19:47:29 -0400 Subject: nfsd: reorder printk in do_probe_callback to avoid use-after-free We're currently dereferencing the client after we drop our reference count to it. Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4callback.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 0b3ffa9840c..4d4760e687c 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -419,9 +419,9 @@ static int do_probe_callback(void *data) out_release_client: rpc_shutdown_client(client); out_err: - put_nfs4_client(clp); dprintk("NFSD: warning: no callback path to client %.*s\n", (int)clp->cl_name.len, clp->cl_name.data); + put_nfs4_client(clp); return status; } -- cgit v1.2.3 From 7a936ce71eed7b887b8a0d6c54dd8a9072f71c9f Mon Sep 17 00:00:00 2001 From: Matthias Kaehlcke Date: Mon, 12 May 2008 10:04:51 -0500 Subject: dlm: convert connections_lock in a mutex The semaphore connections_lock is used as a mutex. Convert it to the mutex API. Signed-off-by: Matthias Kaehlcke Cc: Christine Caulfield Cc: David Teigland Cc: Steven Whitehouse Signed-off-by: Andrew Morton Signed-off-by: David Teigland --- fs/dlm/lowcomms.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) (limited to 'fs') diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index 7c1e5e5cccd..c7d232a9ae1 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -50,6 +50,7 @@ #include #include #include +#include #include #include @@ -138,7 +139,7 @@ static struct workqueue_struct *recv_workqueue; static struct workqueue_struct *send_workqueue; static DEFINE_IDR(connections_idr); -static DECLARE_MUTEX(connections_lock); +static DEFINE_MUTEX(connections_lock); static int max_nodeid; static struct kmem_cache *con_cache; @@ -205,9 +206,9 @@ static struct connection *nodeid2con(int nodeid, gfp_t allocation) { struct connection *con; - down(&connections_lock); + mutex_lock(&connections_lock); con = __nodeid2con(nodeid, allocation); - up(&connections_lock); + mutex_unlock(&connections_lock); return con; } @@ -218,15 +219,15 @@ static struct connection *assoc2con(int assoc_id) int i; struct connection *con; - down(&connections_lock); + mutex_lock(&connections_lock); for (i=0; i<=max_nodeid; i++) { con = __nodeid2con(i, 0); if (con && con->sctp_assoc == assoc_id) { - up(&connections_lock); + mutex_unlock(&connections_lock); return con; } } - up(&connections_lock); + mutex_unlock(&connections_lock); return NULL; } @@ -381,7 +382,7 @@ static void sctp_init_failed(void) int i; struct connection *con; - down(&connections_lock); + mutex_lock(&connections_lock); for (i=1; i<=max_nodeid; i++) { con = __nodeid2con(i, 0); if (!con) @@ -393,7 +394,7 @@ static void sctp_init_failed(void) } } } - up(&connections_lock); + mutex_unlock(&connections_lock); } /* Something happened to an association */ @@ -1417,7 +1418,7 @@ void dlm_lowcomms_stop(void) /* Set all the flags to prevent any socket activity. */ - down(&connections_lock); + mutex_lock(&connections_lock); for (i = 0; i <= max_nodeid; i++) { con = __nodeid2con(i, 0); if (con) { @@ -1426,11 +1427,11 @@ void dlm_lowcomms_stop(void) con->sock->sk->sk_user_data = NULL; } } - up(&connections_lock); + mutex_unlock(&connections_lock); work_stop(); - down(&connections_lock); + mutex_lock(&connections_lock); clean_writequeues(); for (i = 0; i <= max_nodeid; i++) { @@ -1443,7 +1444,7 @@ void dlm_lowcomms_stop(void) } } max_nodeid = 0; - up(&connections_lock); + mutex_unlock(&connections_lock); kmem_cache_destroy(con_cache); idr_init(&connections_idr); } -- cgit v1.2.3 From 88ad23195e4609cef73b6fcf2b4c08aaaef33204 Mon Sep 17 00:00:00 2001 From: Leonardo Potenza Date: Sun, 11 May 2008 19:15:34 +0200 Subject: dlm: section mismatch warning fix Removed the section mismatch message: WARNING: fs/dlm/dlm.o(.init.text+0x132): Section mismatch in reference from the function init_module() to the function .exit.text:dlm_netlink_exit() Since dlm_netlink_exit() is called in the init_dlm() error handling, the __exit annotation has been removed. Signed-off-by: Leonardo Potenza Signed-off-by: David Teigland --- fs/dlm/netlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/dlm/netlink.c b/fs/dlm/netlink.c index 714593621f4..18bda83cc89 100644 --- a/fs/dlm/netlink.c +++ b/fs/dlm/netlink.c @@ -95,7 +95,7 @@ int __init dlm_netlink_init(void) return rv; } -void __exit dlm_netlink_exit(void) +void dlm_netlink_exit(void) { genl_unregister_ops(&family, &dlm_nl_ops); genl_unregister_family(&family); -- cgit v1.2.3 From 0035a4b14931eb62a5f8a7762284c18e7ab14289 Mon Sep 17 00:00:00 2001 From: Marcin Slusarz Date: Sun, 11 May 2008 22:01:29 +0200 Subject: dlm: tcp_connect_to_sock should check for -EINVAL, not EINVAL Signed-off-by: Marcin Slusarz Cc: Christine Caulfield Cc: David Teigland Cc: cluster-devel@redhat.com Signed-off-by: David Teigland --- fs/dlm/lowcomms.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index c7d232a9ae1..637018c891e 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -931,7 +931,7 @@ out_err: * errors we try again until the max number of retries is reached. */ if (result != -EHOSTUNREACH && result != -ENETUNREACH && - result != -ENETDOWN && result != EINVAL + result != -ENETDOWN && result != -EINVAL && result != -EPROTONOSUPPORT) { lowcomms_connect_sock(con); result = 0; -- cgit v1.2.3 From 817d10bad56f2fdfa321b4a864a21295226b123a Mon Sep 17 00:00:00 2001 From: David Teigland Date: Tue, 13 May 2008 14:28:26 -0500 Subject: dlm: fix plock dev_write return value The return value on writes to the plock device should be the number of bytes written. It was returning 0 instead when an nfs lock callback was involved. Reported-by: Nathan Straz Signed-off-by: David Teigland --- fs/dlm/plock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/dlm/plock.c b/fs/dlm/plock.c index d6d6e370f89..78878c5781c 100644 --- a/fs/dlm/plock.c +++ b/fs/dlm/plock.c @@ -379,7 +379,7 @@ static ssize_t dev_write(struct file *file, const char __user *u, size_t count, struct plock_xop *xop; xop = (struct plock_xop *)op; if (xop->callback) - count = dlm_plock_callback(op); + dlm_plock_callback(op); else wake_up(&recv_wq); } else -- cgit v1.2.3 From 89562b777c50d100d1694db7b1b023279839b9ae Mon Sep 17 00:00:00 2001 From: Steve French Date: Mon, 19 May 2008 22:26:42 +0000 Subject: [CIFS] add missing seq_printf to cifs_show_options for hard mount option Also Kari Hurtta noticed a missing check in the same function which is now fixed. CC: Kari Hurtta Signed-off-by: Steve French --- fs/cifs/cifsfs.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs') diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 57e40c49d3b..5df93fd6303 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -360,7 +360,10 @@ cifs_show_options(struct seq_file *s, struct vfsmount *m) } if (cifs_sb->tcon->seal) seq_printf(s, ",seal"); + if (cifs_sb->tcon->nocase) seq_printf(s, ",nocase"); + if (cifs_sb->tcon->retry) + seq_printf(s, ",hard"); } if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) seq_printf(s, ",posixpaths"); -- cgit v1.2.3 From 0e4bbde94fdc33f5b3d793166b21bf768ca3e098 Mon Sep 17 00:00:00 2001 From: Steve French Date: Tue, 20 May 2008 19:50:46 +0000 Subject: [CIFS] Enable DFS support for Unix query path info Final piece for handling DFS in unix_query_path_info, constructing a fake inode for the junction directory which the submount will cover. Acked-by: Igor Mammedov Signed-off-by: Steve French --- fs/cifs/AUTHORS | 1 + fs/cifs/CHANGES | 2 + fs/cifs/TODO | 15 ++++---- fs/cifs/inode.c | 117 +++++++++++++++++++++++++++++++++++--------------------- 4 files changed, 85 insertions(+), 50 deletions(-) (limited to 'fs') diff --git a/fs/cifs/AUTHORS b/fs/cifs/AUTHORS index 8848e4dfa02..9c136d7803d 100644 --- a/fs/cifs/AUTHORS +++ b/fs/cifs/AUTHORS @@ -36,6 +36,7 @@ Miklos Szeredi Kazeon team for various fixes especially for 2.4 version. Asser Ferno (Change Notify support) Shaggy (Dave Kleikamp) for inumerable small fs suggestions and some good cleanup +Igor Mammedov (DFS support) Test case and Bug Report contributors ------------------------------------- diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES index 502a4c2b841..28e3d5c5fca 100644 --- a/fs/cifs/CHANGES +++ b/fs/cifs/CHANGES @@ -1,5 +1,7 @@ Version 1.53 ------------ +DFS support added (Microsoft Distributed File System client support needed +for referrals which enable a hierarchical name space among servers). Version 1.52 ------------ diff --git a/fs/cifs/TODO b/fs/cifs/TODO index 92c9feac440..5aff46c61e5 100644 --- a/fs/cifs/TODO +++ b/fs/cifs/TODO @@ -1,4 +1,4 @@ -Version 1.52 January 3, 2008 +Version 1.53 May 20, 2008 A Partial List of Missing Features ================================== @@ -20,20 +20,21 @@ d) Cleanup now unneeded SessSetup code in fs/cifs/connect.c and add back in NTLMSSP code if any servers need it -e) ms-dfs and ms-dfs host name resolution cleanup - -f) fix NTLMv2 signing when two mounts with different users to same +e) fix NTLMv2 signing when two mounts with different users to same server. -g) Directory entry caching relies on a 1 second timer, rather than +f) Directory entry caching relies on a 1 second timer, rather than using FindNotify or equivalent. - (started) -h) quota support (needs minor kernel change since quota calls +g) quota support (needs minor kernel change since quota calls to make it to network filesystems or deviceless filesystems) -i) investigate sync behavior (including syncpage) and check +h) investigate sync behavior (including syncpage) and check for proper behavior of intr/nointr +i) improve support for very old servers (OS/2 and Win9x for example) +Including support for changing the time remotely (utimes command). + j) hook lower into the sockets api (as NFS/SunRPC does) to avoid the extra copy in/out of the socket buffers in some cases. diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 9d9b56a9c08..422d4e219fa 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -161,77 +161,108 @@ static void cifs_unix_info_to_inode(struct inode *inode, spin_unlock(&inode->i_lock); } +static void fill_fake_finddataunix(FILE_UNIX_BASIC_INFO *pfnd_dat, + struct super_block *sb) +{ + struct inode *pinode = NULL; + + memset(pfnd_dat, sizeof(FILE_UNIX_BASIC_INFO), 0); + +/* __le64 pfnd_dat->EndOfFile = cpu_to_le64(0); + __le64 pfnd_dat->NumOfBytes = cpu_to_le64(0); + __u64 UniqueId = 0; */ + pfnd_dat->LastStatusChange = + cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); + pfnd_dat->LastAccessTime = + cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); + pfnd_dat->LastModificationTime = + cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); + pfnd_dat->Type = cpu_to_le32(UNIX_DIR); + pfnd_dat->Permissions = cpu_to_le64(S_IXUGO | S_IRWXU); + pfnd_dat->Nlinks = cpu_to_le64(2); + if (sb->s_root) + pinode = sb->s_root->d_inode; + if (pinode == NULL) + return; + + /* fill in default values for the remaining based on root + inode since we can not query the server for this inode info */ + pfnd_dat->DevMajor = cpu_to_le64(MAJOR(pinode->i_rdev)); + pfnd_dat->DevMinor = cpu_to_le64(MINOR(pinode->i_rdev)); + pfnd_dat->Uid = cpu_to_le64(pinode->i_uid); + pfnd_dat->Gid = cpu_to_le64(pinode->i_gid); +} + int cifs_get_inode_info_unix(struct inode **pinode, const unsigned char *full_path, struct super_block *sb, int xid) { int rc = 0; - FILE_UNIX_BASIC_INFO findData; + FILE_UNIX_BASIC_INFO find_data; struct cifsTconInfo *pTcon; struct inode *inode; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); bool is_dfs_referral = false; + struct cifsInodeInfo *cifsInfo; + __u64 num_of_bytes; + __u64 end_of_file; pTcon = cifs_sb->tcon; cFYI(1, ("Getting info on %s", full_path)); -try_again_CIFSSMBUnixQPathInfo: /* could have done a find first instead but this returns more info */ - rc = CIFSSMBUnixQPathInfo(xid, pTcon, full_path, &findData, + rc = CIFSSMBUnixQPathInfo(xid, pTcon, full_path, &find_data, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); -/* dump_mem("\nUnixQPathInfo return data", &findData, - sizeof(findData)); */ if (rc) { if (rc == -EREMOTE && !is_dfs_referral) { is_dfs_referral = true; - goto try_again_CIFSSMBUnixQPathInfo; + cERROR(1, ("DFS ref")); /* BB removeme BB */ + /* for DFS, server does not give us real inode data */ + fill_fake_finddataunix(&find_data, sb); + rc = 0; } - goto cgiiu_exit; - } else { - struct cifsInodeInfo *cifsInfo; - __u64 num_of_bytes = le64_to_cpu(findData.NumOfBytes); - __u64 end_of_file = le64_to_cpu(findData.EndOfFile); + } + num_of_bytes = le64_to_cpu(find_data.NumOfBytes); + end_of_file = le64_to_cpu(find_data.EndOfFile); - /* get new inode */ + /* get new inode */ + if (*pinode == NULL) { + *pinode = new_inode(sb); if (*pinode == NULL) { - *pinode = new_inode(sb); - if (*pinode == NULL) { - rc = -ENOMEM; - goto cgiiu_exit; - } - /* Is an i_ino of zero legal? */ - /* Are there sanity checks we can use to ensure that - the server is really filling in that field? */ - if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { - (*pinode)->i_ino = - (unsigned long)findData.UniqueId; - } /* note ino incremented to unique num in new_inode */ - if (sb->s_flags & MS_NOATIME) - (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME; - - insert_inode_hash(*pinode); + rc = -ENOMEM; + goto cgiiu_exit; } + /* Is an i_ino of zero legal? */ + /* note ino incremented to unique num in new_inode */ + /* Are there sanity checks we can use to ensure that + the server is really filling in that field? */ + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) + (*pinode)->i_ino = (unsigned long)find_data.UniqueId; - inode = *pinode; - cifsInfo = CIFS_I(inode); + if (sb->s_flags & MS_NOATIME) + (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME; - cFYI(1, ("Old time %ld", cifsInfo->time)); - cifsInfo->time = jiffies; - cFYI(1, ("New time %ld", cifsInfo->time)); - /* this is ok to set on every inode revalidate */ - atomic_set(&cifsInfo->inUse, 1); + insert_inode_hash(*pinode); + } - cifs_unix_info_to_inode(inode, &findData, 0); + inode = *pinode; + cifsInfo = CIFS_I(inode); + cFYI(1, ("Old time %ld", cifsInfo->time)); + cifsInfo->time = jiffies; + cFYI(1, ("New time %ld", cifsInfo->time)); + /* this is ok to set on every inode revalidate */ + atomic_set(&cifsInfo->inUse, 1); - if (num_of_bytes < end_of_file) - cFYI(1, ("allocation size less than end of file")); - cFYI(1, ("Size %ld and blocks %llu", - (unsigned long) inode->i_size, - (unsigned long long)inode->i_blocks)); + cifs_unix_info_to_inode(inode, &find_data, 0); - cifs_set_ops(inode, is_dfs_referral); - } + if (num_of_bytes < end_of_file) + cFYI(1, ("allocation size less than end of file")); + cFYI(1, ("Size %ld and blocks %llu", + (unsigned long) inode->i_size, + (unsigned long long)inode->i_blocks)); + + cifs_set_ops(inode, is_dfs_referral); cgiiu_exit: return rc; } -- cgit v1.2.3 From b9a3260f25ab5d2ba5c8b9508e7952848b9d704b Mon Sep 17 00:00:00 2001 From: Steve French Date: Tue, 20 May 2008 21:52:32 +0000 Subject: [CIFS] Enable DFS support for Windows query path info Final piece for handling DFS in query_path_info, constructing a fake inode for the junction directory which the submount will cover. This handles the non-Unix (Windows etc.) code path. Signed-off-by: Steve French --- fs/cifs/inode.c | 324 +++++++++++++++++++++++++++++++------------------------- 1 file changed, 178 insertions(+), 146 deletions(-) (limited to 'fs') diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 422d4e219fa..1cf43e10194 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -161,6 +161,12 @@ static void cifs_unix_info_to_inode(struct inode *inode, spin_unlock(&inode->i_lock); } + +/* + * Needed to setup inode data for the directory which is the + * junction to the new submount (ie to setup the fake directory + * which represents a DFS referral) + */ static void fill_fake_finddataunix(FILE_UNIX_BASIC_INFO *pfnd_dat, struct super_block *sb) { @@ -370,11 +376,42 @@ static int get_sfu_mode(struct inode *inode, #endif } +/* + * Needed to setup inode data for the directory which is the + * junction to the new submount (ie to setup the fake directory + * which represents a DFS referral) + */ +static void fill_fake_finddata(FILE_ALL_INFO *pfnd_dat, + struct super_block *sb) +{ + memset(pfnd_dat, sizeof(FILE_ALL_INFO), 0); + +/* __le64 pfnd_dat->AllocationSize = cpu_to_le64(0); + __le64 pfnd_dat->EndOfFile = cpu_to_le64(0); + __u8 pfnd_dat->DeletePending = 0; + __u8 pfnd_data->Directory = 0; + __le32 pfnd_dat->EASize = 0; + __u64 pfnd_dat->IndexNumber = 0; + __u64 pfnd_dat->IndexNumber1 = 0; */ + pfnd_dat->CreationTime = + cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); + pfnd_dat->LastAccessTime = + cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); + pfnd_dat->LastWriteTime = + cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); + pfnd_dat->ChangeTime = + cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME)); + pfnd_dat->Attributes = cpu_to_le32(ATTR_DIRECTORY); + pfnd_dat->NumberOfLinks = cpu_to_le32(2); +} + int cifs_get_inode_info(struct inode **pinode, const unsigned char *full_path, FILE_ALL_INFO *pfindData, struct super_block *sb, int xid, const __u16 *pfid) { int rc = 0; + __u32 attr; + struct cifsInodeInfo *cifsInfo; struct cifsTconInfo *pTcon; struct inode *inode; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); @@ -399,7 +436,6 @@ int cifs_get_inode_info(struct inode **pinode, return -ENOMEM; pfindData = (FILE_ALL_INFO *)buf; -try_again_CIFSSMBQPathInfo: /* could do find first instead but this returns more info */ rc = CIFSSMBQPathInfo(xid, pTcon, full_path, pfindData, 0 /* not legacy */, @@ -417,171 +453,167 @@ try_again_CIFSSMBQPathInfo: } } /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */ - if (rc) { - if (rc == -EREMOTE && !is_dfs_referral) { - is_dfs_referral = true; - goto try_again_CIFSSMBQPathInfo; - } + if (rc == -EREMOTE) { + is_dfs_referral = true; + fill_fake_finddata(pfindData, sb); + rc = 0; + } else if (rc) goto cgii_exit; - } else { - struct cifsInodeInfo *cifsInfo; - __u32 attr = le32_to_cpu(pfindData->Attributes); - /* get new inode */ + attr = le32_to_cpu(pfindData->Attributes); + + /* get new inode */ + if (*pinode == NULL) { + *pinode = new_inode(sb); if (*pinode == NULL) { - *pinode = new_inode(sb); - if (*pinode == NULL) { - rc = -ENOMEM; - goto cgii_exit; - } - /* Is an i_ino of zero legal? Can we use that to check - if the server supports returning inode numbers? Are - there other sanity checks we can use to ensure that - the server is really filling in that field? */ + rc = -ENOMEM; + goto cgii_exit; + } + /* Is an i_ino of zero legal? Can we use that to check + if the server supports returning inode numbers? Are + there other sanity checks we can use to ensure that + the server is really filling in that field? */ - /* We can not use the IndexNumber field by default from - Windows or Samba (in ALL_INFO buf) but we can request - it explicitly. It may not be unique presumably if - the server has multiple devices mounted under one - share */ + /* We can not use the IndexNumber field by default from + Windows or Samba (in ALL_INFO buf) but we can request + it explicitly. It may not be unique presumably if + the server has multiple devices mounted under one share */ - /* There may be higher info levels that work but are - there Windows server or network appliances for which - IndexNumber field is not guaranteed unique? */ + /* There may be higher info levels that work but are + there Windows server or network appliances for which + IndexNumber field is not guaranteed unique? */ - if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { - int rc1 = 0; - __u64 inode_num; + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { + int rc1 = 0; + __u64 inode_num; - rc1 = CIFSGetSrvInodeNumber(xid, pTcon, + rc1 = CIFSGetSrvInodeNumber(xid, pTcon, full_path, &inode_num, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); - if (rc1) { - cFYI(1, ("GetSrvInodeNum rc %d", rc1)); - /* BB EOPNOSUPP disable SERVER_INUM? */ - } else /* do we need cast or hash to ino? */ - (*pinode)->i_ino = inode_num; - } /* else ino incremented to unique num in new_inode*/ - if (sb->s_flags & MS_NOATIME) - (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME; - insert_inode_hash(*pinode); - } - inode = *pinode; - cifsInfo = CIFS_I(inode); - cifsInfo->cifsAttrs = attr; - cFYI(1, ("Old time %ld", cifsInfo->time)); - cifsInfo->time = jiffies; - cFYI(1, ("New time %ld", cifsInfo->time)); - - /* blksize needs to be multiple of two. So safer to default to - blksize and blkbits set in superblock so 2**blkbits and blksize - will match rather than setting to: - (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/ - - /* Linux can not store file creation time so ignore it */ - if (pfindData->LastAccessTime) - inode->i_atime = cifs_NTtimeToUnix - (le64_to_cpu(pfindData->LastAccessTime)); - else /* do not need to use current_fs_time - time not stored */ - inode->i_atime = CURRENT_TIME; - inode->i_mtime = + if (rc1) { + cFYI(1, ("GetSrvInodeNum rc %d", rc1)); + /* BB EOPNOSUPP disable SERVER_INUM? */ + } else /* do we need cast or hash to ino? */ + (*pinode)->i_ino = inode_num; + } /* else ino incremented to unique num in new_inode*/ + if (sb->s_flags & MS_NOATIME) + (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME; + insert_inode_hash(*pinode); + } + inode = *pinode; + cifsInfo = CIFS_I(inode); + cifsInfo->cifsAttrs = attr; + cFYI(1, ("Old time %ld", cifsInfo->time)); + cifsInfo->time = jiffies; + cFYI(1, ("New time %ld", cifsInfo->time)); + + /* blksize needs to be multiple of two. So safer to default to + blksize and blkbits set in superblock so 2**blkbits and blksize + will match rather than setting to: + (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/ + + /* Linux can not store file creation time so ignore it */ + if (pfindData->LastAccessTime) + inode->i_atime = cifs_NTtimeToUnix + (le64_to_cpu(pfindData->LastAccessTime)); + else /* do not need to use current_fs_time - time not stored */ + inode->i_atime = CURRENT_TIME; + inode->i_mtime = cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime)); - inode->i_ctime = - cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime)); - cFYI(0, ("Attributes came in as 0x%x", attr)); - if (adjustTZ && (pTcon->ses) && (pTcon->ses->server)) { - inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj; - inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj; - } + inode->i_ctime = + cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime)); + cFYI(DBG2, ("Attributes came in as 0x%x", attr)); + if (adjustTZ && (pTcon->ses) && (pTcon->ses->server)) { + inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj; + inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj; + } - /* set default mode. will override for dirs below */ - if (atomic_read(&cifsInfo->inUse) == 0) - /* new inode, can safely set these fields */ - inode->i_mode = cifs_sb->mnt_file_mode; - else /* since we set the inode type below we need to mask off - to avoid strange results if type changes and both - get orred in */ - inode->i_mode &= ~S_IFMT; -/* if (attr & ATTR_REPARSE) */ - /* We no longer handle these as symlinks because we could not - follow them due to the absolute path with drive letter */ - if (attr & ATTR_DIRECTORY) { - /* override default perms since we do not do byte range locking - on dirs */ - inode->i_mode = cifs_sb->mnt_dir_mode; - inode->i_mode |= S_IFDIR; - } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) && - (cifsInfo->cifsAttrs & ATTR_SYSTEM) && - /* No need to le64 convert size of zero */ - (pfindData->EndOfFile == 0)) { - inode->i_mode = cifs_sb->mnt_file_mode; - inode->i_mode |= S_IFIFO; + /* set default mode. will override for dirs below */ + if (atomic_read(&cifsInfo->inUse) == 0) + /* new inode, can safely set these fields */ + inode->i_mode = cifs_sb->mnt_file_mode; + else /* since we set the inode type below we need to mask off + to avoid strange results if type changes and both + get orred in */ + inode->i_mode &= ~S_IFMT; +/* if (attr & ATTR_REPARSE) */ + /* We no longer handle these as symlinks because we could not + follow them due to the absolute path with drive letter */ + if (attr & ATTR_DIRECTORY) { + /* override default perms since we do not do byte range locking + on dirs */ + inode->i_mode = cifs_sb->mnt_dir_mode; + inode->i_mode |= S_IFDIR; + } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) && + (cifsInfo->cifsAttrs & ATTR_SYSTEM) && + /* No need to le64 convert size of zero */ + (pfindData->EndOfFile == 0)) { + inode->i_mode = cifs_sb->mnt_file_mode; + inode->i_mode |= S_IFIFO; /* BB Finish for SFU style symlinks and devices */ - } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) && - (cifsInfo->cifsAttrs & ATTR_SYSTEM)) { - if (decode_sfu_inode(inode, - le64_to_cpu(pfindData->EndOfFile), - full_path, - cifs_sb, xid)) - cFYI(1, ("Unrecognized sfu inode type")); - - cFYI(1, ("sfu mode 0%o", inode->i_mode)); - } else { - inode->i_mode |= S_IFREG; - /* treat the dos attribute of read-only as read-only - mode e.g. 555 */ - if (cifsInfo->cifsAttrs & ATTR_READONLY) - inode->i_mode &= ~(S_IWUGO); - else if ((inode->i_mode & S_IWUGO) == 0) - /* the ATTR_READONLY flag may have been */ - /* changed on server -- set any w bits */ - /* allowed by mnt_file_mode */ - inode->i_mode |= (S_IWUGO & - cifs_sb->mnt_file_mode); - /* BB add code here - - validate if device or weird share or device type? */ - } + } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) && + (cifsInfo->cifsAttrs & ATTR_SYSTEM)) { + if (decode_sfu_inode(inode, le64_to_cpu(pfindData->EndOfFile), + full_path, cifs_sb, xid)) + cFYI(1, ("Unrecognized sfu inode type")); - spin_lock(&inode->i_lock); - if (is_size_safe_to_change(cifsInfo, - le64_to_cpu(pfindData->EndOfFile))) { - /* can not safely shrink the file size here if the - client is writing to it due to potential races */ - i_size_write(inode, le64_to_cpu(pfindData->EndOfFile)); - - /* 512 bytes (2**9) is the fake blocksize that must be - used for this calculation */ - inode->i_blocks = (512 - 1 + le64_to_cpu( - pfindData->AllocationSize)) >> 9; - } - spin_unlock(&inode->i_lock); + cFYI(1, ("sfu mode 0%o", inode->i_mode)); + } else { + inode->i_mode |= S_IFREG; + /* treat dos attribute of read-only as read-only mode eg 555 */ + if (cifsInfo->cifsAttrs & ATTR_READONLY) + inode->i_mode &= ~(S_IWUGO); + else if ((inode->i_mode & S_IWUGO) == 0) + /* the ATTR_READONLY flag may have been */ + /* changed on server -- set any w bits */ + /* allowed by mnt_file_mode */ + inode->i_mode |= (S_IWUGO & cifs_sb->mnt_file_mode); + /* BB add code to validate if device or weird share or device type? */ + } + + spin_lock(&inode->i_lock); + if (is_size_safe_to_change(cifsInfo, + le64_to_cpu(pfindData->EndOfFile))) { + /* can not safely shrink the file size here if the + client is writing to it due to potential races */ + i_size_write(inode, le64_to_cpu(pfindData->EndOfFile)); + + /* 512 bytes (2**9) is the fake blocksize that must be + used for this calculation */ + inode->i_blocks = (512 - 1 + le64_to_cpu( + pfindData->AllocationSize)) >> 9; + } + spin_unlock(&inode->i_lock); - inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks); + inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks); - /* BB fill in uid and gid here? with help from winbind? - or retrieve from NTFS stream extended attribute */ + /* BB fill in uid and gid here? with help from winbind? + or retrieve from NTFS stream extended attribute */ #ifdef CONFIG_CIFS_EXPERIMENTAL - /* fill in 0777 bits from ACL */ - if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { - cFYI(1, ("Getting mode bits from ACL")); - acl_to_uid_mode(inode, full_path, pfid); - } + /* fill in 0777 bits from ACL */ + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { + cFYI(1, ("Getting mode bits from ACL")); + acl_to_uid_mode(inode, full_path, pfid); + } #endif - if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { - /* fill in remaining high mode bits e.g. SUID, VTX */ - get_sfu_mode(inode, full_path, cifs_sb, xid); - } else if (atomic_read(&cifsInfo->inUse) == 0) { - inode->i_uid = cifs_sb->mnt_uid; - inode->i_gid = cifs_sb->mnt_gid; - /* set so we do not keep refreshing these fields with - bad data after user has changed them in memory */ - atomic_set(&cifsInfo->inUse, 1); - } - - cifs_set_ops(inode, is_dfs_referral); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { + /* fill in remaining high mode bits e.g. SUID, VTX */ + get_sfu_mode(inode, full_path, cifs_sb, xid); + } else if (atomic_read(&cifsInfo->inUse) == 0) { + inode->i_uid = cifs_sb->mnt_uid; + inode->i_gid = cifs_sb->mnt_gid; + /* set so we do not keep refreshing these fields with + bad data after user has changed them in memory */ + atomic_set(&cifsInfo->inUse, 1); } + + cifs_set_ops(inode, is_dfs_referral); + + + + cgii_exit: kfree(buf); return rc; -- cgit v1.2.3 From 5651ced3ab196b5e7dc485c5777f210aa41e2d8d Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Tue, 20 May 2008 13:02:01 +0400 Subject: Fix possible access to undefined memory region. Signed-off-by: Igor Mammedov Signed-off-by: Steve French --- fs/cifs/dns_resolve.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'fs') diff --git a/fs/cifs/dns_resolve.c b/fs/cifs/dns_resolve.c index 939e256f849..f730ef35499 100644 --- a/fs/cifs/dns_resolve.c +++ b/fs/cifs/dns_resolve.c @@ -134,10 +134,6 @@ dns_resolve_server_name_to_ip(const char *unc, char **ip_addr) rkey = request_key(&key_type_dns_resolver, name, ""); if (!IS_ERR(rkey)) { data = rkey->payload.data; - cFYI(1, ("%s: resolved: %s to %s", __func__, - rkey->description, - *ip_addr - )); } else { cERROR(1, ("%s: unable to resolve: %s", __func__, name)); goto out; @@ -150,6 +146,11 @@ skip_upcall: if (*ip_addr) { memcpy(*ip_addr, data, len); (*ip_addr)[len] = '\0'; + if (!IS_ERR(rkey)) + cFYI(1, ("%s: resolved: %s to %s", __func__, + name, + *ip_addr + )); rc = 0; } else { rc = -ENOMEM; -- cgit v1.2.3 From 397d71ddfda5b11b85e396d6ea822011c132b962 Mon Sep 17 00:00:00 2001 From: Steve French Date: Wed, 21 May 2008 03:49:46 +0000 Subject: [CIFS] Remove debug statement Signed-off-by: Steve French --- fs/cifs/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 1cf43e10194..00ced97bd53 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -222,7 +222,7 @@ int cifs_get_inode_info_unix(struct inode **pinode, if (rc) { if (rc == -EREMOTE && !is_dfs_referral) { is_dfs_referral = true; - cERROR(1, ("DFS ref")); /* BB removeme BB */ + cFYI(DBG2, ("DFS ref")); /* for DFS, server does not give us real inode data */ fill_fake_finddataunix(&find_data, sb); rc = 0; -- cgit v1.2.3 From 13c48c490208d9e70d8d66d56f96c5054db69af7 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 21 May 2008 06:32:11 +0100 Subject: fix hppfs Makefile breakage Fallout from commit 46d7b522ebf486edbd096965d534cc6465e9e309 ("uml: move hppfs_kern.c to hppfs.c") Signed-off-by: Al Viro Acked-by: Jeff Dike Signed-off-by: Linus Torvalds --- fs/hppfs/Makefile | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'fs') diff --git a/fs/hppfs/Makefile b/fs/hppfs/Makefile index 8a1f5034436..3a982bd975d 100644 --- a/fs/hppfs/Makefile +++ b/fs/hppfs/Makefile @@ -3,7 +3,4 @@ # Licensed under the GPL # -hppfs-objs := hppfs.o - -obj-y = -obj-$(CONFIG_HPPFS) += $(hppfs-objs) +obj-$(CONFIG_HPPFS) += hppfs.o -- cgit v1.2.3 From 79bc12a0a09c2eb1ccbb01c192045f994567bda2 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 21 May 2008 06:32:11 +0100 Subject: ecryptfs fixes memcpy() from userland pointer is a Bad Thing(tm) Signed-off-by: Al Viro Signed-off-by: Linus Torvalds --- fs/ecryptfs/miscdev.c | 26 ++++++++++++-------------- 1 file changed, 12 insertions(+), 14 deletions(-) (limited to 'fs') diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c index 6560da1a58c..50c994a249a 100644 --- a/fs/ecryptfs/miscdev.c +++ b/fs/ecryptfs/miscdev.c @@ -243,7 +243,6 @@ ecryptfs_miscdev_read(struct file *file, char __user *buf, size_t count, struct ecryptfs_daemon *daemon; struct ecryptfs_msg_ctx *msg_ctx; size_t packet_length_size; - u32 counter_nbo; char packet_length[3]; size_t i; size_t total_length; @@ -328,20 +327,18 @@ check_list: "pending message\n", __func__, count, total_length); goto out_unlock_msg_ctx; } - i = 0; - buf[i++] = msg_ctx->type; - counter_nbo = cpu_to_be32(msg_ctx->counter); - memcpy(&buf[i], (char *)&counter_nbo, 4); - i += 4; + rc = -EFAULT; + if (put_user(msg_ctx->type, buf)) + goto out_unlock_msg_ctx; + if (put_user(cpu_to_be32(msg_ctx->counter), (__be32 __user *)(buf + 1))) + goto out_unlock_msg_ctx; + i = 5; if (msg_ctx->msg) { - memcpy(&buf[i], packet_length, packet_length_size); + if (copy_to_user(&buf[i], packet_length, packet_length_size)) + goto out_unlock_msg_ctx; i += packet_length_size; - rc = copy_to_user(&buf[i], msg_ctx->msg, msg_ctx->msg_size); - if (rc) { - printk(KERN_ERR "%s: copy_to_user returned error " - "[%d]\n", __func__, rc); + if (copy_to_user(&buf[i], msg_ctx->msg, msg_ctx->msg_size)) goto out_unlock_msg_ctx; - } i += msg_ctx->msg_size; } rc = i; @@ -452,7 +449,8 @@ static ssize_t ecryptfs_miscdev_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { - u32 counter_nbo, seq; + __be32 counter_nbo; + u32 seq; size_t packet_size, packet_size_length, i; ssize_t sz = 0; char *data; @@ -485,7 +483,7 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf, count); goto out_free; } - memcpy((char *)&counter_nbo, &data[i], 4); + memcpy(&counter_nbo, &data[i], 4); seq = be32_to_cpu(counter_nbo); i += 4; rc = ecryptfs_parse_packet_length(&data[i], &packet_size, -- cgit v1.2.3 From 9d8df6aa9b1ca74127b11537d91de492dbea666a Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 21 May 2008 06:32:11 +0100 Subject: ocfs2 endianness fixes Signed-off-by: Al Viro Signed-off-by: Linus Torvalds --- fs/ocfs2/alloc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index 41f84c92094..10bfb466e06 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -2788,7 +2788,7 @@ static int ocfs2_merge_rec_right(struct inode *inode, BUG_ON(index >= le16_to_cpu(el->l_next_free_rec)); left_rec = &el->l_recs[index]; - if (index == le16_to_cpu(el->l_next_free_rec - 1) && + if (index == le16_to_cpu(el->l_next_free_rec) - 1 && le16_to_cpu(el->l_next_free_rec) == le16_to_cpu(el->l_count)) { /* we meet with a cross extent block merge. */ ret = ocfs2_get_right_path(inode, left_path, &right_path); @@ -2802,7 +2802,7 @@ static int ocfs2_merge_rec_right(struct inode *inode, BUG_ON(next_free <= 0); right_rec = &right_el->l_recs[0]; if (ocfs2_is_empty_extent(right_rec)) { - BUG_ON(le16_to_cpu(next_free) <= 1); + BUG_ON(next_free <= 1); right_rec = &right_el->l_recs[1]; } -- cgit v1.2.3