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-rw-r--r--fs/nfs/nfs3proc.c859
1 files changed, 859 insertions, 0 deletions
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
new file mode 100644
index 00000000000..3878494dfc2
--- /dev/null
+++ b/fs/nfs/nfs3proc.c
@@ -0,0 +1,859 @@
+/*
+ * linux/fs/nfs/nfs3proc.c
+ *
+ * Client-side NFSv3 procedures stubs.
+ *
+ * Copyright (C) 1997, Olaf Kirch
+ */
+
+#include <linux/mm.h>
+#include <linux/utsname.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/sunrpc/clnt.h>
+#include <linux/nfs.h>
+#include <linux/nfs3.h>
+#include <linux/nfs_fs.h>
+#include <linux/nfs_page.h>
+#include <linux/lockd/bind.h>
+#include <linux/smp_lock.h>
+
+#define NFSDBG_FACILITY NFSDBG_PROC
+
+extern struct rpc_procinfo nfs3_procedures[];
+
+/* A wrapper to handle the EJUKEBOX error message */
+static int
+nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
+{
+ sigset_t oldset;
+ int res;
+ rpc_clnt_sigmask(clnt, &oldset);
+ do {
+ res = rpc_call_sync(clnt, msg, flags);
+ if (res != -EJUKEBOX)
+ break;
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(NFS_JUKEBOX_RETRY_TIME);
+ res = -ERESTARTSYS;
+ } while (!signalled());
+ rpc_clnt_sigunmask(clnt, &oldset);
+ return res;
+}
+
+static inline int
+nfs3_rpc_call_wrapper(struct rpc_clnt *clnt, u32 proc, void *argp, void *resp, int flags)
+{
+ struct rpc_message msg = {
+ .rpc_proc = &nfs3_procedures[proc],
+ .rpc_argp = argp,
+ .rpc_resp = resp,
+ };
+ return nfs3_rpc_wrapper(clnt, &msg, flags);
+}
+
+#define rpc_call(clnt, proc, argp, resp, flags) \
+ nfs3_rpc_call_wrapper(clnt, proc, argp, resp, flags)
+#define rpc_call_sync(clnt, msg, flags) \
+ nfs3_rpc_wrapper(clnt, msg, flags)
+
+static int
+nfs3_async_handle_jukebox(struct rpc_task *task)
+{
+ if (task->tk_status != -EJUKEBOX)
+ return 0;
+ task->tk_status = 0;
+ rpc_restart_call(task);
+ rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);
+ return 1;
+}
+
+/*
+ * Bare-bones access to getattr: this is for nfs_read_super.
+ */
+static int
+nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
+ struct nfs_fsinfo *info)
+{
+ int status;
+
+ dprintk("%s: call fsinfo\n", __FUNCTION__);
+ info->fattr->valid = 0;
+ status = rpc_call(server->client_sys, NFS3PROC_FSINFO, fhandle, info, 0);
+ dprintk("%s: reply fsinfo: %d\n", __FUNCTION__, status);
+ if (!(info->fattr->valid & NFS_ATTR_FATTR)) {
+ status = rpc_call(server->client_sys, NFS3PROC_GETATTR, fhandle, info->fattr, 0);
+ dprintk("%s: reply getattr: %d\n", __FUNCTION__, status);
+ }
+ return status;
+}
+
+/*
+ * One function for each procedure in the NFS protocol.
+ */
+static int
+nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
+ struct nfs_fattr *fattr)
+{
+ int status;
+
+ dprintk("NFS call getattr\n");
+ fattr->valid = 0;
+ status = rpc_call(server->client, NFS3PROC_GETATTR,
+ fhandle, fattr, 0);
+ dprintk("NFS reply getattr: %d\n", status);
+ return status;
+}
+
+static int
+nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
+ struct iattr *sattr)
+{
+ struct inode *inode = dentry->d_inode;
+ struct nfs3_sattrargs arg = {
+ .fh = NFS_FH(inode),
+ .sattr = sattr,
+ };
+ int status;
+
+ dprintk("NFS call setattr\n");
+ fattr->valid = 0;
+ status = rpc_call(NFS_CLIENT(inode), NFS3PROC_SETATTR, &arg, fattr, 0);
+ dprintk("NFS reply setattr: %d\n", status);
+ return status;
+}
+
+static int
+nfs3_proc_lookup(struct inode *dir, struct qstr *name,
+ struct nfs_fh *fhandle, struct nfs_fattr *fattr)
+{
+ struct nfs_fattr dir_attr;
+ struct nfs3_diropargs arg = {
+ .fh = NFS_FH(dir),
+ .name = name->name,
+ .len = name->len
+ };
+ struct nfs3_diropres res = {
+ .dir_attr = &dir_attr,
+ .fh = fhandle,
+ .fattr = fattr
+ };
+ int status;
+
+ dprintk("NFS call lookup %s\n", name->name);
+ dir_attr.valid = 0;
+ fattr->valid = 0;
+ status = rpc_call(NFS_CLIENT(dir), NFS3PROC_LOOKUP, &arg, &res, 0);
+ if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR))
+ status = rpc_call(NFS_CLIENT(dir), NFS3PROC_GETATTR,
+ fhandle, fattr, 0);
+ dprintk("NFS reply lookup: %d\n", status);
+ if (status >= 0)
+ status = nfs_refresh_inode(dir, &dir_attr);
+ return status;
+}
+
+static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
+{
+ struct nfs_fattr fattr;
+ struct nfs3_accessargs arg = {
+ .fh = NFS_FH(inode),
+ };
+ struct nfs3_accessres res = {
+ .fattr = &fattr,
+ };
+ struct rpc_message msg = {
+ .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
+ .rpc_argp = &arg,
+ .rpc_resp = &res,
+ .rpc_cred = entry->cred
+ };
+ int mode = entry->mask;
+ int status;
+
+ dprintk("NFS call access\n");
+ fattr.valid = 0;
+
+ if (mode & MAY_READ)
+ arg.access |= NFS3_ACCESS_READ;
+ if (S_ISDIR(inode->i_mode)) {
+ if (mode & MAY_WRITE)
+ arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE;
+ if (mode & MAY_EXEC)
+ arg.access |= NFS3_ACCESS_LOOKUP;
+ } else {
+ if (mode & MAY_WRITE)
+ arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND;
+ if (mode & MAY_EXEC)
+ arg.access |= NFS3_ACCESS_EXECUTE;
+ }
+ status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
+ nfs_refresh_inode(inode, &fattr);
+ if (status == 0) {
+ entry->mask = 0;
+ if (res.access & NFS3_ACCESS_READ)
+ entry->mask |= MAY_READ;
+ if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE))
+ entry->mask |= MAY_WRITE;
+ if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE))
+ entry->mask |= MAY_EXEC;
+ }
+ dprintk("NFS reply access: %d\n", status);
+ return status;
+}
+
+static int nfs3_proc_readlink(struct inode *inode, struct page *page,
+ unsigned int pgbase, unsigned int pglen)
+{
+ struct nfs_fattr fattr;
+ struct nfs3_readlinkargs args = {
+ .fh = NFS_FH(inode),
+ .pgbase = pgbase,
+ .pglen = pglen,
+ .pages = &page
+ };
+ int status;
+
+ dprintk("NFS call readlink\n");
+ fattr.valid = 0;
+ status = rpc_call(NFS_CLIENT(inode), NFS3PROC_READLINK,
+ &args, &fattr, 0);
+ nfs_refresh_inode(inode, &fattr);
+ dprintk("NFS reply readlink: %d\n", status);
+ return status;
+}
+
+static int nfs3_proc_read(struct nfs_read_data *rdata)
+{
+ int flags = rdata->flags;
+ struct inode * inode = rdata->inode;
+ struct nfs_fattr * fattr = rdata->res.fattr;
+ struct rpc_message msg = {
+ .rpc_proc = &nfs3_procedures[NFS3PROC_READ],
+ .rpc_argp = &rdata->args,
+ .rpc_resp = &rdata->res,
+ .rpc_cred = rdata->cred,
+ };
+ int status;
+
+ dprintk("NFS call read %d @ %Ld\n", rdata->args.count,
+ (long long) rdata->args.offset);
+ fattr->valid = 0;
+ status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
+ if (status >= 0)
+ nfs_refresh_inode(inode, fattr);
+ dprintk("NFS reply read: %d\n", status);
+ return status;
+}
+
+static int nfs3_proc_write(struct nfs_write_data *wdata)
+{
+ int rpcflags = wdata->flags;
+ struct inode * inode = wdata->inode;
+ struct nfs_fattr * fattr = wdata->res.fattr;
+ struct rpc_message msg = {
+ .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE],
+ .rpc_argp = &wdata->args,
+ .rpc_resp = &wdata->res,
+ .rpc_cred = wdata->cred,
+ };
+ int status;
+
+ dprintk("NFS call write %d @ %Ld\n", wdata->args.count,
+ (long long) wdata->args.offset);
+ fattr->valid = 0;
+ status = rpc_call_sync(NFS_CLIENT(inode), &msg, rpcflags);
+ if (status >= 0)
+ nfs_refresh_inode(inode, fattr);
+ dprintk("NFS reply write: %d\n", status);
+ return status < 0? status : wdata->res.count;
+}
+
+static int nfs3_proc_commit(struct nfs_write_data *cdata)
+{
+ struct inode * inode = cdata->inode;
+ struct nfs_fattr * fattr = cdata->res.fattr;
+ struct rpc_message msg = {
+ .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT],
+ .rpc_argp = &cdata->args,
+ .rpc_resp = &cdata->res,
+ .rpc_cred = cdata->cred,
+ };
+ int status;
+
+ dprintk("NFS call commit %d @ %Ld\n", cdata->args.count,
+ (long long) cdata->args.offset);
+ fattr->valid = 0;
+ status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
+ if (status >= 0)
+ nfs_refresh_inode(inode, fattr);
+ dprintk("NFS reply commit: %d\n", status);
+ return status;
+}
+
+/*
+ * Create a regular file.
+ * For now, we don't implement O_EXCL.
+ */
+static int
+nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
+ int flags)
+{
+ struct nfs_fh fhandle;
+ struct nfs_fattr fattr;
+ struct nfs_fattr dir_attr;
+ struct nfs3_createargs arg = {
+ .fh = NFS_FH(dir),
+ .name = dentry->d_name.name,
+ .len = dentry->d_name.len,
+ .sattr = sattr,
+ };
+ struct nfs3_diropres res = {
+ .dir_attr = &dir_attr,
+ .fh = &fhandle,
+ .fattr = &fattr
+ };
+ int status;
+
+ dprintk("NFS call create %s\n", dentry->d_name.name);
+ arg.createmode = NFS3_CREATE_UNCHECKED;
+ if (flags & O_EXCL) {
+ arg.createmode = NFS3_CREATE_EXCLUSIVE;
+ arg.verifier[0] = jiffies;
+ arg.verifier[1] = current->pid;
+ }
+
+again:
+ dir_attr.valid = 0;
+ fattr.valid = 0;
+ status = rpc_call(NFS_CLIENT(dir), NFS3PROC_CREATE, &arg, &res, 0);
+ nfs_refresh_inode(dir, &dir_attr);
+
+ /* If the server doesn't support the exclusive creation semantics,
+ * try again with simple 'guarded' mode. */
+ if (status == NFSERR_NOTSUPP) {
+ switch (arg.createmode) {
+ case NFS3_CREATE_EXCLUSIVE:
+ arg.createmode = NFS3_CREATE_GUARDED;
+ break;
+
+ case NFS3_CREATE_GUARDED:
+ arg.createmode = NFS3_CREATE_UNCHECKED;
+ break;
+
+ case NFS3_CREATE_UNCHECKED:
+ goto out;
+ }
+ goto again;
+ }
+
+ if (status == 0)
+ status = nfs_instantiate(dentry, &fhandle, &fattr);
+ if (status != 0)
+ goto out;
+
+ /* When we created the file with exclusive semantics, make
+ * sure we set the attributes afterwards. */
+ if (arg.createmode == NFS3_CREATE_EXCLUSIVE) {
+ dprintk("NFS call setattr (post-create)\n");
+
+ if (!(sattr->ia_valid & ATTR_ATIME_SET))
+ sattr->ia_valid |= ATTR_ATIME;
+ if (!(sattr->ia_valid & ATTR_MTIME_SET))
+ sattr->ia_valid |= ATTR_MTIME;
+
+ /* Note: we could use a guarded setattr here, but I'm
+ * not sure this buys us anything (and I'd have
+ * to revamp the NFSv3 XDR code) */
+ status = nfs3_proc_setattr(dentry, &fattr, sattr);
+ nfs_refresh_inode(dentry->d_inode, &fattr);
+ dprintk("NFS reply setattr (post-create): %d\n", status);
+ }
+out:
+ dprintk("NFS reply create: %d\n", status);
+ return status;
+}
+
+static int
+nfs3_proc_remove(struct inode *dir, struct qstr *name)
+{
+ struct nfs_fattr dir_attr;
+ struct nfs3_diropargs arg = {
+ .fh = NFS_FH(dir),
+ .name = name->name,
+ .len = name->len
+ };
+ struct rpc_message msg = {
+ .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
+ .rpc_argp = &arg,
+ .rpc_resp = &dir_attr,
+ };
+ int status;
+
+ dprintk("NFS call remove %s\n", name->name);
+ dir_attr.valid = 0;
+ status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
+ nfs_refresh_inode(dir, &dir_attr);
+ dprintk("NFS reply remove: %d\n", status);
+ return status;
+}
+
+static int
+nfs3_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name)
+{
+ struct unlinkxdr {
+ struct nfs3_diropargs arg;
+ struct nfs_fattr res;
+ } *ptr;
+
+ ptr = (struct unlinkxdr *)kmalloc(sizeof(*ptr), GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+ ptr->arg.fh = NFS_FH(dir->d_inode);
+ ptr->arg.name = name->name;
+ ptr->arg.len = name->len;
+ ptr->res.valid = 0;
+ msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
+ msg->rpc_argp = &ptr->arg;
+ msg->rpc_resp = &ptr->res;
+ return 0;
+}
+
+static int
+nfs3_proc_unlink_done(struct dentry *dir, struct rpc_task *task)
+{
+ struct rpc_message *msg = &task->tk_msg;
+ struct nfs_fattr *dir_attr;
+
+ if (nfs3_async_handle_jukebox(task))
+ return 1;
+ if (msg->rpc_argp) {
+ dir_attr = (struct nfs_fattr*)msg->rpc_resp;
+ nfs_refresh_inode(dir->d_inode, dir_attr);
+ kfree(msg->rpc_argp);
+ }
+ return 0;
+}
+
+static int
+nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
+ struct inode *new_dir, struct qstr *new_name)
+{
+ struct nfs_fattr old_dir_attr, new_dir_attr;
+ struct nfs3_renameargs arg = {
+ .fromfh = NFS_FH(old_dir),
+ .fromname = old_name->name,
+ .fromlen = old_name->len,
+ .tofh = NFS_FH(new_dir),
+ .toname = new_name->name,
+ .tolen = new_name->len
+ };
+ struct nfs3_renameres res = {
+ .fromattr = &old_dir_attr,
+ .toattr = &new_dir_attr
+ };
+ int status;
+
+ dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
+ old_dir_attr.valid = 0;
+ new_dir_attr.valid = 0;
+ status = rpc_call(NFS_CLIENT(old_dir), NFS3PROC_RENAME, &arg, &res, 0);
+ nfs_refresh_inode(old_dir, &old_dir_attr);
+ nfs_refresh_inode(new_dir, &new_dir_attr);
+ dprintk("NFS reply rename: %d\n", status);
+ return status;
+}
+
+static int
+nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
+{
+ struct nfs_fattr dir_attr, fattr;
+ struct nfs3_linkargs arg = {
+ .fromfh = NFS_FH(inode),
+ .tofh = NFS_FH(dir),
+ .toname = name->name,
+ .tolen = name->len
+ };
+ struct nfs3_linkres res = {
+ .dir_attr = &dir_attr,
+ .fattr = &fattr
+ };
+ int status;
+
+ dprintk("NFS call link %s\n", name->name);
+ dir_attr.valid = 0;
+ fattr.valid = 0;
+ status = rpc_call(NFS_CLIENT(inode), NFS3PROC_LINK, &arg, &res, 0);
+ nfs_refresh_inode(dir, &dir_attr);
+ nfs_refresh_inode(inode, &fattr);
+ dprintk("NFS reply link: %d\n", status);
+ return status;
+}
+
+static int
+nfs3_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path,
+ struct iattr *sattr, struct nfs_fh *fhandle,
+ struct nfs_fattr *fattr)
+{
+ struct nfs_fattr dir_attr;
+ struct nfs3_symlinkargs arg = {
+ .fromfh = NFS_FH(dir),
+ .fromname = name->name,
+ .fromlen = name->len,
+ .topath = path->name,
+ .tolen = path->len,
+ .sattr = sattr
+ };
+ struct nfs3_diropres res = {
+ .dir_attr = &dir_attr,
+ .fh = fhandle,
+ .fattr = fattr
+ };
+ int status;
+
+ if (path->len > NFS3_MAXPATHLEN)
+ return -ENAMETOOLONG;
+ dprintk("NFS call symlink %s -> %s\n", name->name, path->name);
+ dir_attr.valid = 0;
+ fattr->valid = 0;
+ status = rpc_call(NFS_CLIENT(dir), NFS3PROC_SYMLINK, &arg, &res, 0);
+ nfs_refresh_inode(dir, &dir_attr);
+ dprintk("NFS reply symlink: %d\n", status);
+ return status;
+}
+
+static int
+nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
+{
+ struct nfs_fh fhandle;
+ struct nfs_fattr fattr, dir_attr;
+ struct nfs3_mkdirargs arg = {
+ .fh = NFS_FH(dir),
+ .name = dentry->d_name.name,
+ .len = dentry->d_name.len,
+ .sattr = sattr
+ };
+ struct nfs3_diropres res = {
+ .dir_attr = &dir_attr,
+ .fh = &fhandle,
+ .fattr = &fattr
+ };
+ int status;
+
+ dprintk("NFS call mkdir %s\n", dentry->d_name.name);
+ dir_attr.valid = 0;
+ fattr.valid = 0;
+ status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKDIR, &arg, &res, 0);
+ nfs_refresh_inode(dir, &dir_attr);
+ if (status == 0)
+ status = nfs_instantiate(dentry, &fhandle, &fattr);
+ dprintk("NFS reply mkdir: %d\n", status);
+ return status;
+}
+
+static int
+nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
+{
+ struct nfs_fattr dir_attr;
+ struct nfs3_diropargs arg = {
+ .fh = NFS_FH(dir),
+ .name = name->name,
+ .len = name->len
+ };
+ int status;
+
+ dprintk("NFS call rmdir %s\n", name->name);
+ dir_attr.valid = 0;
+ status = rpc_call(NFS_CLIENT(dir), NFS3PROC_RMDIR, &arg, &dir_attr, 0);
+ nfs_refresh_inode(dir, &dir_attr);
+ dprintk("NFS reply rmdir: %d\n", status);
+ return status;
+}
+
+/*
+ * The READDIR implementation is somewhat hackish - we pass the user buffer
+ * to the encode function, which installs it in the receive iovec.
+ * The decode function itself doesn't perform any decoding, it just makes
+ * sure the reply is syntactically correct.
+ *
+ * Also note that this implementation handles both plain readdir and
+ * readdirplus.
+ */
+static int
+nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
+ u64 cookie, struct page *page, unsigned int count, int plus)
+{
+ struct inode *dir = dentry->d_inode;
+ struct nfs_fattr dir_attr;
+ u32 *verf = NFS_COOKIEVERF(dir);
+ struct nfs3_readdirargs arg = {
+ .fh = NFS_FH(dir),
+ .cookie = cookie,
+ .verf = {verf[0], verf[1]},
+ .plus = plus,
+ .count = count,
+ .pages = &page
+ };
+ struct nfs3_readdirres res = {
+ .dir_attr = &dir_attr,
+ .verf = verf,
+ .plus = plus
+ };
+ struct rpc_message msg = {
+ .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
+ .rpc_argp = &arg,
+ .rpc_resp = &res,
+ .rpc_cred = cred
+ };
+ int status;
+
+ lock_kernel();
+
+ if (plus)
+ msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
+
+ dprintk("NFS call readdir%s %d\n",
+ plus? "plus" : "", (unsigned int) cookie);
+
+ dir_attr.valid = 0;
+ status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
+ nfs_refresh_inode(dir, &dir_attr);
+ dprintk("NFS reply readdir: %d\n", status);
+ unlock_kernel();
+ return status;
+}
+
+static int
+nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
+ dev_t rdev)
+{
+ struct nfs_fh fh;
+ struct nfs_fattr fattr, dir_attr;
+ struct nfs3_mknodargs arg = {
+ .fh = NFS_FH(dir),
+ .name = dentry->d_name.name,
+ .len = dentry->d_name.len,
+ .sattr = sattr,
+ .rdev = rdev
+ };
+ struct nfs3_diropres res = {
+ .dir_attr = &dir_attr,
+ .fh = &fh,
+ .fattr = &fattr
+ };
+ int status;
+
+ switch (sattr->ia_mode & S_IFMT) {
+ case S_IFBLK: arg.type = NF3BLK; break;
+ case S_IFCHR: arg.type = NF3CHR; break;
+ case S_IFIFO: arg.type = NF3FIFO; break;
+ case S_IFSOCK: arg.type = NF3SOCK; break;
+ default: return -EINVAL;
+ }
+
+ dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name,
+ MAJOR(rdev), MINOR(rdev));
+ dir_attr.valid = 0;
+ fattr.valid = 0;
+ status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKNOD, &arg, &res, 0);
+ nfs_refresh_inode(dir, &dir_attr);
+ if (status == 0)
+ status = nfs_instantiate(dentry, &fh, &fattr);
+ dprintk("NFS reply mknod: %d\n", status);
+ return status;
+}
+
+static int
+nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
+ struct nfs_fsstat *stat)
+{
+ int status;
+
+ dprintk("NFS call fsstat\n");
+ stat->fattr->valid = 0;
+ status = rpc_call(server->client, NFS3PROC_FSSTAT, fhandle, stat, 0);
+ dprintk("NFS reply statfs: %d\n", status);
+ return status;
+}
+
+static int
+nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
+ struct nfs_fsinfo *info)
+{
+ int status;
+
+ dprintk("NFS call fsinfo\n");
+ info->fattr->valid = 0;
+ status = rpc_call(server->client_sys, NFS3PROC_FSINFO, fhandle, info, 0);
+ dprintk("NFS reply fsinfo: %d\n", status);
+ return status;
+}
+
+static int
+nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
+ struct nfs_pathconf *info)
+{
+ int status;
+
+ dprintk("NFS call pathconf\n");
+ info->fattr->valid = 0;
+ status = rpc_call(server->client, NFS3PROC_PATHCONF, fhandle, info, 0);
+ dprintk("NFS reply pathconf: %d\n", status);
+ return status;
+}
+
+extern u32 *nfs3_decode_dirent(u32 *, struct nfs_entry *, int);
+
+static void
+nfs3_read_done(struct rpc_task *task)
+{
+ struct nfs_write_data *data = (struct nfs_write_data *) task->tk_calldata;
+
+ if (nfs3_async_handle_jukebox(task))
+ return;
+ /* Call back common NFS readpage processing */
+ if (task->tk_status >= 0)
+ nfs_refresh_inode(data->inode, &data->fattr);
+ nfs_readpage_result(task);
+}
+
+static void
+nfs3_proc_read_setup(struct nfs_read_data *data)
+{
+ struct rpc_task *task = &data->task;
+ struct inode *inode = data->inode;
+ int flags;
+ struct rpc_message msg = {
+ .rpc_proc = &nfs3_procedures[NFS3PROC_READ],
+ .rpc_argp = &data->args,
+ .rpc_resp = &data->res,
+ .rpc_cred = data->cred,
+ };
+
+ /* N.B. Do we need to test? Never called for swapfile inode */
+ flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0);
+
+ /* Finalize the task. */
+ rpc_init_task(task, NFS_CLIENT(inode), nfs3_read_done, flags);
+ rpc_call_setup(task, &msg, 0);
+}
+
+static void
+nfs3_write_done(struct rpc_task *task)
+{
+ struct nfs_write_data *data;
+
+ if (nfs3_async_handle_jukebox(task))
+ return;
+ data = (struct nfs_write_data *)task->tk_calldata;
+ if (task->tk_status >= 0)
+ nfs_refresh_inode(data->inode, data->res.fattr);
+ nfs_writeback_done(task);
+}
+
+static void
+nfs3_proc_write_setup(struct nfs_write_data *data, int how)
+{
+ struct rpc_task *task = &data->task;
+ struct inode *inode = data->inode;
+ int stable;
+ int flags;
+ struct rpc_message msg = {
+ .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE],
+ .rpc_argp = &data->args,
+ .rpc_resp = &data->res,
+ .rpc_cred = data->cred,
+ };
+
+ if (how & FLUSH_STABLE) {
+ if (!NFS_I(inode)->ncommit)
+ stable = NFS_FILE_SYNC;
+ else
+ stable = NFS_DATA_SYNC;
+ } else
+ stable = NFS_UNSTABLE;
+ data->args.stable = stable;
+
+ /* Set the initial flags for the task. */
+ flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
+
+ /* Finalize the task. */
+ rpc_init_task(task, NFS_CLIENT(inode), nfs3_write_done, flags);
+ rpc_call_setup(task, &msg, 0);
+}
+
+static void
+nfs3_commit_done(struct rpc_task *task)
+{
+ struct nfs_write_data *data;
+
+ if (nfs3_async_handle_jukebox(task))
+ return;
+ data = (struct nfs_write_data *)task->tk_calldata;
+ if (task->tk_status >= 0)
+ nfs_refresh_inode(data->inode, data->res.fattr);
+ nfs_commit_done(task);
+}
+
+static void
+nfs3_proc_commit_setup(struct nfs_write_data *data, int how)
+{
+ struct rpc_task *task = &data->task;
+ struct inode *inode = data->inode;
+ int flags;
+ struct rpc_message msg = {
+ .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT],
+ .rpc_argp = &data->args,
+ .rpc_resp = &data->res,
+ .rpc_cred = data->cred,
+ };
+
+ /* Set the initial flags for the task. */
+ flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
+
+ /* Finalize the task. */
+ rpc_init_task(task, NFS_CLIENT(inode), nfs3_commit_done, flags);
+ rpc_call_setup(task, &msg, 0);
+}
+
+static int
+nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
+{
+ return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl);
+}
+
+struct nfs_rpc_ops nfs_v3_clientops = {
+ .version = 3, /* protocol version */
+ .dentry_ops = &nfs_dentry_operations,
+ .dir_inode_ops = &nfs_dir_inode_operations,
+ .getroot = nfs3_proc_get_root,
+ .getattr = nfs3_proc_getattr,
+ .setattr = nfs3_proc_setattr,
+ .lookup = nfs3_proc_lookup,
+ .access = nfs3_proc_access,
+ .readlink = nfs3_proc_readlink,
+ .read = nfs3_proc_read,
+ .write = nfs3_proc_write,
+ .commit = nfs3_proc_commit,
+ .create = nfs3_proc_create,
+ .remove = nfs3_proc_remove,
+ .unlink_setup = nfs3_proc_unlink_setup,
+ .unlink_done = nfs3_proc_unlink_done,
+ .rename = nfs3_proc_rename,
+ .link = nfs3_proc_link,
+ .symlink = nfs3_proc_symlink,
+ .mkdir = nfs3_proc_mkdir,
+ .rmdir = nfs3_proc_rmdir,
+ .readdir = nfs3_proc_readdir,
+ .mknod = nfs3_proc_mknod,
+ .statfs = nfs3_proc_statfs,
+ .fsinfo = nfs3_proc_fsinfo,
+ .pathconf = nfs3_proc_pathconf,
+ .decode_dirent = nfs3_decode_dirent,
+ .read_setup = nfs3_proc_read_setup,
+ .write_setup = nfs3_proc_write_setup,
+ .commit_setup = nfs3_proc_commit_setup,
+ .file_open = nfs_open,
+ .file_release = nfs_release,
+ .lock = nfs3_proc_lock,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 12:22:25 +0000