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Diffstat (limited to 'fs/cifs/cifssmb.c')
-rw-r--r--fs/cifs/cifssmb.c212
1 files changed, 61 insertions, 151 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 9409524e4bf..4b69d1cea65 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1,7 +1,7 @@
/*
* fs/cifs/cifssmb.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)
*
* Contains the routines for constructing the SMB PDUs themselves
@@ -102,10 +102,12 @@ static void mark_open_files_invalid(struct cifsTconInfo *pTcon)
to this tcon */
}
-/* If the return code is zero, this function must fill in request_buf pointer */
+/* Allocate and return pointer to an SMB request buffer, and set basic
+ SMB information in the SMB header. If the return code is zero, this
+ function must have filled in request_buf pointer */
static int
small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
- void **request_buf /* returned */)
+ void **request_buf)
{
int rc = 0;
@@ -363,7 +365,7 @@ smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
*response_buf = *request_buf;
header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,
- wct /*wct */ );
+ wct);
if (tcon != NULL)
cifs_stats_inc(&tcon->num_smbs_sent);
@@ -523,7 +525,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
if (remain >= (MIN_TZ_ADJ / 2))
result += MIN_TZ_ADJ;
if (val < 0)
- result = - result;
+ result = -result;
server->timeAdj = result;
} else {
server->timeAdj = (int)tmp;
@@ -868,9 +870,8 @@ PsxDelete:
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
+ if (rc)
cFYI(1, ("Posix delete returned %d", rc));
- }
cifs_buf_release(pSMB);
cifs_stats_inc(&tcon->num_deletes);
@@ -916,9 +917,8 @@ DelFileRetry:
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
cifs_stats_inc(&tcon->num_deletes);
- if (rc) {
+ if (rc)
cFYI(1, ("Error in RMFile = %d", rc));
- }
cifs_buf_release(pSMB);
if (rc == -EAGAIN)
@@ -961,9 +961,8 @@ RmDirRetry:
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
cifs_stats_inc(&tcon->num_rmdirs);
- if (rc) {
+ if (rc)
cFYI(1, ("Error in RMDir = %d", rc));
- }
cifs_buf_release(pSMB);
if (rc == -EAGAIN)
@@ -1005,9 +1004,8 @@ MkDirRetry:
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
cifs_stats_inc(&tcon->num_mkdirs);
- if (rc) {
+ if (rc)
cFYI(1, ("Error in Mkdir = %d", rc));
- }
cifs_buf_release(pSMB);
if (rc == -EAGAIN)
@@ -1017,7 +1015,7 @@ MkDirRetry:
int
CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags,
- __u64 mode, __u16 * netfid, FILE_UNIX_BASIC_INFO *pRetData,
+ __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData,
__u32 *pOplock, const char *name,
const struct nls_table *nls_codepage, int remap)
{
@@ -1027,8 +1025,8 @@ CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags,
int rc = 0;
int bytes_returned = 0;
__u16 params, param_offset, offset, byte_count, count;
- OPEN_PSX_REQ * pdata;
- OPEN_PSX_RSP * psx_rsp;
+ OPEN_PSX_REQ *pdata;
+ OPEN_PSX_RSP *psx_rsp;
cFYI(1, ("In POSIX Create"));
PsxCreat:
@@ -1169,8 +1167,8 @@ static __u16 convert_disposition(int disposition)
int
SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon,
const char *fileName, const int openDisposition,
- const int access_flags, const int create_options, __u16 * netfid,
- int *pOplock, FILE_ALL_INFO * pfile_info,
+ const int access_flags, const int create_options, __u16 *netfid,
+ int *pOplock, FILE_ALL_INFO *pfile_info,
const struct nls_table *nls_codepage, int remap)
{
int rc = -EACCES;
@@ -1221,8 +1219,8 @@ OldOpenRetry:
if (create_options & CREATE_OPTION_SPECIAL)
pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM);
- else
- pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); /* BB FIXME */
+ else /* BB FIXME BB */
+ pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/);
/* if ((omode & S_IWUGO) == 0)
pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/
@@ -1284,8 +1282,8 @@ OldOpenRetry:
int
CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
const char *fileName, const int openDisposition,
- const int access_flags, const int create_options, __u16 * netfid,
- int *pOplock, FILE_ALL_INFO * pfile_info,
+ const int access_flags, const int create_options, __u16 *netfid,
+ int *pOplock, FILE_ALL_INFO *pfile_info,
const struct nls_table *nls_codepage, int remap)
{
int rc = -EACCES;
@@ -1556,9 +1554,9 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
} /* else setting file size with write of zero bytes */
if (wct == 14)
byte_count = bytes_sent + 1; /* pad */
- else /* wct == 12 */ {
+ else /* wct == 12 */
byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */
- }
+
pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF);
pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16);
pSMB->hdr.smb_buf_length += byte_count;
@@ -1663,7 +1661,7 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
rc = -EIO;
*nbytes = 0;
} else {
- WRITE_RSP * pSMBr = (WRITE_RSP *)iov[0].iov_base;
+ WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base;
*nbytes = le16_to_cpu(pSMBr->CountHigh);
*nbytes = (*nbytes) << 16;
*nbytes += le16_to_cpu(pSMBr->Count);
@@ -1744,9 +1742,8 @@ CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
/* SMB buffer freed by function above */
}
cifs_stats_inc(&tcon->num_locks);
- if (rc) {
+ if (rc)
cFYI(1, ("Send error in Lock = %d", rc));
- }
/* Note: On -EAGAIN error only caller can retry on handle based calls
since file handle passed in no longer valid */
@@ -1791,7 +1788,7 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
count = sizeof(struct cifs_posix_lock);
pSMB->MaxParameterCount = cpu_to_le16(2);
- pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
+ pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */
pSMB->SetupCount = 1;
pSMB->Reserved3 = 0;
if (get_flag)
@@ -1972,9 +1969,8 @@ renameRetry:
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
cifs_stats_inc(&tcon->num_renames);
- if (rc) {
+ if (rc)
cFYI(1, ("Send error in rename = %d", rc));
- }
cifs_buf_release(pSMB);
@@ -2016,7 +2012,7 @@ int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon,
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
rename_info = (struct set_file_rename *) data_offset;
pSMB->MaxParameterCount = cpu_to_le16(2);
- pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
+ pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */
pSMB->SetupCount = 1;
pSMB->Reserved3 = 0;
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
@@ -2052,9 +2048,8 @@ int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon,
rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
cifs_stats_inc(&pTcon->num_t2renames);
- if (rc) {
+ if (rc)
cFYI(1, ("Send error in Rename (by file handle) = %d", rc));
- }
cifs_buf_release(pSMB);
@@ -2211,9 +2206,8 @@ createSymLinkRetry:
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
cifs_stats_inc(&tcon->num_symlinks);
- if (rc) {
+ if (rc)
cFYI(1, ("Send error in SetPathInfo create symlink = %d", rc));
- }
if (pSMB)
cifs_buf_release(pSMB);
@@ -2299,9 +2293,8 @@ createHardLinkRetry:
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
cifs_stats_inc(&tcon->num_hardlinks);
- if (rc) {
+ if (rc)
cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc));
- }
cifs_buf_release(pSMB);
if (rc == -EAGAIN)
@@ -2370,9 +2363,9 @@ winCreateHardLinkRetry:
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
cifs_stats_inc(&tcon->num_hardlinks);
- if (rc) {
+ if (rc)
cFYI(1, ("Send error in hard link (NT rename) = %d", rc));
- }
+
cifs_buf_release(pSMB);
if (rc == -EAGAIN)
goto winCreateHardLinkRetry;
@@ -2968,9 +2961,8 @@ setAclRetry:
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
+ if (rc)
cFYI(1, ("Set POSIX ACL returned %d", rc));
- }
setACLerrorExit:
cifs_buf_release(pSMB);
@@ -2982,7 +2974,7 @@ setACLerrorExit:
/* BB fix tabs in this function FIXME BB */
int
CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon,
- const int netfid, __u64 * pExtAttrBits, __u64 *pMask)
+ const int netfid, __u64 *pExtAttrBits, __u64 *pMask)
{
int rc = 0;
struct smb_t2_qfi_req *pSMB = NULL;
@@ -3000,7 +2992,7 @@ GetExtAttrRetry:
if (rc)
return rc;
- params = 2 /* level */ +2 /* fid */;
+ params = 2 /* level */ + 2 /* fid */;
pSMB->t2.TotalDataCount = 0;
pSMB->t2.MaxParameterCount = cpu_to_le16(4);
/* BB find exact max data count below from sess structure BB */
@@ -3071,7 +3063,7 @@ CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
{
int rc = 0;
int buf_type = 0;
- QUERY_SEC_DESC_REQ * pSMB;
+ QUERY_SEC_DESC_REQ *pSMB;
struct kvec iov[1];
cFYI(1, ("GetCifsACL"));
@@ -3101,7 +3093,7 @@ CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
if (rc) {
cFYI(1, ("Send error in QuerySecDesc = %d", rc));
} else { /* decode response */
- __le32 * parm;
+ __le32 *parm;
__u32 parm_len;
__u32 acl_len;
struct smb_com_ntransact_rsp *pSMBr;
@@ -3230,8 +3222,8 @@ int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
FILE_ALL_INFO *pFinfo,
const struct nls_table *nls_codepage, int remap)
{
- QUERY_INFORMATION_REQ * pSMB;
- QUERY_INFORMATION_RSP * pSMBr;
+ QUERY_INFORMATION_REQ *pSMB;
+ QUERY_INFORMATION_RSP *pSMBr;
int rc = 0;
int bytes_returned;
int name_len;
@@ -3263,9 +3255,11 @@ QInfRetry:
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
cFYI(1, ("Send error in QueryInfo = %d", rc));
- } else if (pFinfo) { /* decode response */
+ } else if (pFinfo) {
struct timespec ts;
__u32 time = le32_to_cpu(pSMBr->last_write_time);
+
+ /* decode response */
/* BB FIXME - add time zone adjustment BB */
memset(pFinfo, 0, sizeof(FILE_ALL_INFO));
ts.tv_nsec = 0;
@@ -3296,7 +3290,7 @@ QInfRetry:
int
CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
const unsigned char *searchName,
- FILE_ALL_INFO * pFindData,
+ FILE_ALL_INFO *pFindData,
int legacy /* old style infolevel */,
const struct nls_table *nls_codepage, int remap)
{
@@ -3371,10 +3365,12 @@ QPathInfoRetry:
else if (pFindData) {
int size;
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- if (legacy) /* we do not read the last field, EAsize,
- fortunately since it varies by subdialect
- and on Set vs. Get, is two bytes or 4
- bytes depending but we don't care here */
+
+ /* On legacy responses we do not read the last field,
+ EAsize, fortunately since it varies by subdialect and
+ also note it differs on Set vs. Get, ie two bytes or 4
+ bytes depending but we don't care here */
+ if (legacy)
size = sizeof(FILE_INFO_STANDARD);
else
size = sizeof(FILE_ALL_INFO);
@@ -3476,85 +3472,6 @@ UnixQPathInfoRetry:
return rc;
}
-#if 0 /* function unused at present */
-int CIFSFindSingle(const int xid, struct cifsTconInfo *tcon,
- const char *searchName, FILE_ALL_INFO * findData,
- const struct nls_table *nls_codepage)
-{
-/* level 257 SMB_ */
- TRANSACTION2_FFIRST_REQ *pSMB = NULL;
- TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
- int rc = 0;
- int bytes_returned;
- int name_len;
- __u16 params, byte_count;
-
- cFYI(1, ("In FindUnique"));
-findUniqueRetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage);
- name_len++; /* trailing null */
- name_len *= 2;
- } else { /* BB improve the check for buffer overruns BB */
- name_len = strnlen(searchName, PATH_MAX);
- name_len++; /* trailing null */
- strncpy(pSMB->FileName, searchName, name_len);
- }
-
- params = 12 + name_len /* includes null */ ;
- pSMB->TotalDataCount = 0; /* no EAs */
- pSMB->MaxParameterCount = cpu_to_le16(2);
- pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- pSMB->ParameterOffset = cpu_to_le16(
- offsetof(struct smb_com_transaction2_ffirst_req, InformationLevel)-4);
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1; /* one byte, no need to le convert */
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->SearchAttributes =
- cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
- ATTR_DIRECTORY);
- pSMB->SearchCount = cpu_to_le16(16); /* BB increase */
- pSMB->SearchFlags = cpu_to_le16(1);
- pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO);
- pSMB->SearchStorageType = 0; /* BB what should we set this to? BB */
- pSMB->hdr.smb_buf_length += byte_count;
- pSMB->ByteCount = cpu_to_le16(byte_count);
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
-
- if (rc) {
- cFYI(1, ("Send error in FindFileDirInfo = %d", rc));
- } else { /* decode response */
- cifs_stats_inc(&tcon->num_ffirst);
- /* BB fill in */
- }
-
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto findUniqueRetry;
-
- return rc;
-}
-#endif /* end unused (temporarily) function */
-
/* xid, tcon, searchName and codepage are input parms, rest are returned */
int
CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
@@ -3566,7 +3483,7 @@ CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
/* level 257 SMB_ */
TRANSACTION2_FFIRST_REQ *pSMB = NULL;
TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
- T2_FFIRST_RSP_PARMS * parms;
+ T2_FFIRST_RSP_PARMS *parms;
int rc = 0;
int bytes_returned = 0;
int name_len;
@@ -3697,7 +3614,7 @@ int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
{
TRANSACTION2_FNEXT_REQ *pSMB = NULL;
TRANSACTION2_FNEXT_RSP *pSMBr = NULL;
- T2_FNEXT_RSP_PARMS * parms;
+ T2_FNEXT_RSP_PARMS *parms;
char *response_data;
int rc = 0;
int bytes_returned, name_len;
@@ -3836,9 +3753,9 @@ CIFSFindClose(const int xid, struct cifsTconInfo *tcon,
pSMB->FileID = searchHandle;
pSMB->ByteCount = 0;
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0);
- if (rc) {
+ if (rc)
cERROR(1, ("Send error in FindClose = %d", rc));
- }
+
cifs_stats_inc(&tcon->num_fclose);
/* Since session is dead, search handle closed on server already */
@@ -3851,7 +3768,7 @@ CIFSFindClose(const int xid, struct cifsTconInfo *tcon,
int
CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
const unsigned char *searchName,
- __u64 * inode_number,
+ __u64 *inode_number,
const struct nls_table *nls_codepage, int remap)
{
int rc = 0;
@@ -4560,9 +4477,8 @@ SETFSUnixRetry:
cERROR(1, ("Send error in SETFSUnixInfo = %d", rc));
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc) {
+ if (rc)
rc = -EIO; /* bad smb */
- }
}
cifs_buf_release(pSMB);
@@ -4744,9 +4660,8 @@ SetEOFRetry:
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
+ if (rc)
cFYI(1, ("SetPathInfo (file size) returned %d", rc));
- }
cifs_buf_release(pSMB);
@@ -4897,9 +4812,8 @@ CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon,
pSMB->ByteCount = cpu_to_le16(byte_count);
memcpy(data_offset, data, sizeof(FILE_BASIC_INFO));
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0);
- if (rc) {
+ if (rc)
cFYI(1, ("Send error in Set Time (SetFileInfo) = %d", rc));
- }
/* Note: On -EAGAIN error only caller can retry on handle based calls
since file handle passed in no longer valid */
@@ -4975,9 +4889,8 @@ SetTimesRetry:
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
+ if (rc)
cFYI(1, ("SetPathInfo (times) returned %d", rc));
- }
cifs_buf_release(pSMB);
@@ -5027,9 +4940,8 @@ SetAttrLgcyRetry:
pSMB->ByteCount = cpu_to_le16(name_len + 1);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
+ if (rc)
cFYI(1, ("Error in LegacySetAttr = %d", rc));
- }
cifs_buf_release(pSMB);
@@ -5138,9 +5050,8 @@ setPermsRetry:
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
+ if (rc)
cFYI(1, ("SetPathInfo (perms) returned %d", rc));
- }
if (pSMB)
cifs_buf_release(pSMB);
@@ -5615,9 +5526,8 @@ SetEARetry:
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
+ if (rc)
cFYI(1, ("SetPathInfo (EA) returned %d", rc));
- }
cifs_buf_release(pSMB);