diff options
Diffstat (limited to 'fs/nfs/nfs3proc.c')
| -rw-r--r-- | fs/nfs/nfs3proc.c | 859 |
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, +}; |