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![Trond Myklebust](/assets/img/avatar_default.png)
Close-to-open cache consistency rules really only require us to flush out writes on calls to close(), and require us to revalidate attributes on the very last close of the file. Currently we appear to be doing a lot of extra attribute revalidation and cache flushes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
838 lines
21 KiB
C
838 lines
21 KiB
C
/*
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* linux/fs/nfs/nfs3proc.c
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*
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* Client-side NFSv3 procedures stubs.
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*
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* Copyright (C) 1997, Olaf Kirch
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*/
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#include <linux/mm.h>
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#include <linux/utsname.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/sunrpc/clnt.h>
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#include <linux/nfs.h>
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#include <linux/nfs3.h>
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#include <linux/nfs_fs.h>
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#include <linux/nfs_page.h>
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#include <linux/lockd/bind.h>
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#include <linux/nfs_mount.h>
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#include "iostat.h"
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#include "internal.h"
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#define NFSDBG_FACILITY NFSDBG_PROC
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/* A wrapper to handle the EJUKEBOX error message */
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static int
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nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
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{
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int res;
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do {
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res = rpc_call_sync(clnt, msg, flags);
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if (res != -EJUKEBOX)
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break;
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schedule_timeout_killable(NFS_JUKEBOX_RETRY_TIME);
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res = -ERESTARTSYS;
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} while (!fatal_signal_pending(current));
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return res;
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}
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#define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags)
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static int
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nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode)
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{
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if (task->tk_status != -EJUKEBOX)
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return 0;
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nfs_inc_stats(inode, NFSIOS_DELAY);
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task->tk_status = 0;
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rpc_restart_call(task);
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rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);
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return 1;
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}
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static int
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do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle,
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struct nfs_fsinfo *info)
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{
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
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.rpc_argp = fhandle,
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.rpc_resp = info,
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};
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int status;
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dprintk("%s: call fsinfo\n", __func__);
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nfs_fattr_init(info->fattr);
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status = rpc_call_sync(client, &msg, 0);
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dprintk("%s: reply fsinfo: %d\n", __func__, status);
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if (!(info->fattr->valid & NFS_ATTR_FATTR)) {
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msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
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msg.rpc_resp = info->fattr;
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status = rpc_call_sync(client, &msg, 0);
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dprintk("%s: reply getattr: %d\n", __func__, status);
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}
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return status;
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}
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/*
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* Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb
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*/
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static int
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nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
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struct nfs_fsinfo *info)
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{
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int status;
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status = do_proc_get_root(server->client, fhandle, info);
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if (status && server->nfs_client->cl_rpcclient != server->client)
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status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info);
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return status;
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}
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/*
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* One function for each procedure in the NFS protocol.
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*/
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static int
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nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
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struct nfs_fattr *fattr)
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{
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR],
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.rpc_argp = fhandle,
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.rpc_resp = fattr,
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};
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int status;
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dprintk("NFS call getattr\n");
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nfs_fattr_init(fattr);
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status = rpc_call_sync(server->client, &msg, 0);
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dprintk("NFS reply getattr: %d\n", status);
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return status;
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}
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static int
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nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
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struct iattr *sattr)
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{
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struct inode *inode = dentry->d_inode;
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struct nfs3_sattrargs arg = {
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.fh = NFS_FH(inode),
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.sattr = sattr,
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};
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR],
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.rpc_argp = &arg,
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.rpc_resp = fattr,
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};
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int status;
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dprintk("NFS call setattr\n");
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if (sattr->ia_valid & ATTR_FILE)
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msg.rpc_cred = nfs_file_cred(sattr->ia_file);
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nfs_fattr_init(fattr);
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status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
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if (status == 0)
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nfs_setattr_update_inode(inode, sattr);
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dprintk("NFS reply setattr: %d\n", status);
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return status;
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}
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static int
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nfs3_proc_lookup(struct inode *dir, struct qstr *name,
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struct nfs_fh *fhandle, struct nfs_fattr *fattr)
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{
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struct nfs_fattr dir_attr;
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struct nfs3_diropargs arg = {
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.fh = NFS_FH(dir),
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.name = name->name,
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.len = name->len
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};
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struct nfs3_diropres res = {
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.dir_attr = &dir_attr,
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.fh = fhandle,
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.fattr = fattr
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};
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP],
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.rpc_argp = &arg,
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.rpc_resp = &res,
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};
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int status;
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dprintk("NFS call lookup %s\n", name->name);
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nfs_fattr_init(&dir_attr);
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nfs_fattr_init(fattr);
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status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
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nfs_refresh_inode(dir, &dir_attr);
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if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
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msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
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msg.rpc_argp = fhandle;
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msg.rpc_resp = fattr;
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status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
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}
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dprintk("NFS reply lookup: %d\n", status);
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return status;
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}
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static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
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{
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struct nfs_fattr fattr;
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struct nfs3_accessargs arg = {
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.fh = NFS_FH(inode),
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};
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struct nfs3_accessres res = {
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.fattr = &fattr,
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};
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
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.rpc_argp = &arg,
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.rpc_resp = &res,
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.rpc_cred = entry->cred,
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};
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int mode = entry->mask;
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int status;
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dprintk("NFS call access\n");
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if (mode & MAY_READ)
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arg.access |= NFS3_ACCESS_READ;
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if (S_ISDIR(inode->i_mode)) {
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if (mode & MAY_WRITE)
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arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE;
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if (mode & MAY_EXEC)
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arg.access |= NFS3_ACCESS_LOOKUP;
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} else {
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if (mode & MAY_WRITE)
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arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND;
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if (mode & MAY_EXEC)
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arg.access |= NFS3_ACCESS_EXECUTE;
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}
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nfs_fattr_init(&fattr);
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status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
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nfs_refresh_inode(inode, &fattr);
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if (status == 0) {
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entry->mask = 0;
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if (res.access & NFS3_ACCESS_READ)
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entry->mask |= MAY_READ;
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if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE))
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entry->mask |= MAY_WRITE;
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if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE))
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entry->mask |= MAY_EXEC;
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}
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dprintk("NFS reply access: %d\n", status);
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return status;
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}
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static int nfs3_proc_readlink(struct inode *inode, struct page *page,
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unsigned int pgbase, unsigned int pglen)
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{
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struct nfs_fattr fattr;
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struct nfs3_readlinkargs args = {
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.fh = NFS_FH(inode),
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.pgbase = pgbase,
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.pglen = pglen,
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.pages = &page
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};
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
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.rpc_argp = &args,
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.rpc_resp = &fattr,
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};
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int status;
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dprintk("NFS call readlink\n");
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nfs_fattr_init(&fattr);
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status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
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nfs_refresh_inode(inode, &fattr);
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dprintk("NFS reply readlink: %d\n", status);
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return status;
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}
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struct nfs3_createdata {
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struct rpc_message msg;
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union {
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struct nfs3_createargs create;
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struct nfs3_mkdirargs mkdir;
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struct nfs3_symlinkargs symlink;
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struct nfs3_mknodargs mknod;
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} arg;
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struct nfs3_diropres res;
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struct nfs_fh fh;
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struct nfs_fattr fattr;
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struct nfs_fattr dir_attr;
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};
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static struct nfs3_createdata *nfs3_alloc_createdata(void)
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{
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struct nfs3_createdata *data;
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (data != NULL) {
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data->msg.rpc_argp = &data->arg;
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data->msg.rpc_resp = &data->res;
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data->res.fh = &data->fh;
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data->res.fattr = &data->fattr;
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data->res.dir_attr = &data->dir_attr;
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nfs_fattr_init(data->res.fattr);
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nfs_fattr_init(data->res.dir_attr);
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}
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return data;
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}
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static int nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
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{
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int status;
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status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0);
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nfs_post_op_update_inode(dir, data->res.dir_attr);
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if (status == 0)
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status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
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return status;
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}
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static void nfs3_free_createdata(struct nfs3_createdata *data)
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{
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kfree(data);
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}
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/*
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* Create a regular file.
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* For now, we don't implement O_EXCL.
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*/
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static int
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nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
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int flags, struct nameidata *nd)
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{
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struct nfs3_createdata *data;
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mode_t mode = sattr->ia_mode;
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int status = -ENOMEM;
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dprintk("NFS call create %s\n", dentry->d_name.name);
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data = nfs3_alloc_createdata();
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if (data == NULL)
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goto out;
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data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE];
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data->arg.create.fh = NFS_FH(dir);
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data->arg.create.name = dentry->d_name.name;
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data->arg.create.len = dentry->d_name.len;
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data->arg.create.sattr = sattr;
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data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
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if (flags & O_EXCL) {
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data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE;
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data->arg.create.verifier[0] = jiffies;
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data->arg.create.verifier[1] = current->pid;
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}
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sattr->ia_mode &= ~current->fs->umask;
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for (;;) {
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status = nfs3_do_create(dir, dentry, data);
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if (status != -ENOTSUPP)
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break;
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/* If the server doesn't support the exclusive creation
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* semantics, try again with simple 'guarded' mode. */
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switch (data->arg.create.createmode) {
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case NFS3_CREATE_EXCLUSIVE:
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data->arg.create.createmode = NFS3_CREATE_GUARDED;
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break;
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case NFS3_CREATE_GUARDED:
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data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
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break;
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case NFS3_CREATE_UNCHECKED:
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goto out;
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}
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nfs_fattr_init(data->res.dir_attr);
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nfs_fattr_init(data->res.fattr);
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}
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if (status != 0)
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goto out;
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/* When we created the file with exclusive semantics, make
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* sure we set the attributes afterwards. */
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if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) {
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dprintk("NFS call setattr (post-create)\n");
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if (!(sattr->ia_valid & ATTR_ATIME_SET))
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sattr->ia_valid |= ATTR_ATIME;
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if (!(sattr->ia_valid & ATTR_MTIME_SET))
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sattr->ia_valid |= ATTR_MTIME;
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/* Note: we could use a guarded setattr here, but I'm
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* not sure this buys us anything (and I'd have
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* to revamp the NFSv3 XDR code) */
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status = nfs3_proc_setattr(dentry, data->res.fattr, sattr);
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nfs_post_op_update_inode(dentry->d_inode, data->res.fattr);
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dprintk("NFS reply setattr (post-create): %d\n", status);
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if (status != 0)
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goto out;
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}
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status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
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out:
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nfs3_free_createdata(data);
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dprintk("NFS reply create: %d\n", status);
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return status;
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}
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static int
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nfs3_proc_remove(struct inode *dir, struct qstr *name)
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{
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struct nfs_removeargs arg = {
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.fh = NFS_FH(dir),
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.name.len = name->len,
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.name.name = name->name,
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};
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struct nfs_removeres res;
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
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.rpc_argp = &arg,
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.rpc_resp = &res,
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};
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int status;
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dprintk("NFS call remove %s\n", name->name);
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nfs_fattr_init(&res.dir_attr);
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status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
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nfs_post_op_update_inode(dir, &res.dir_attr);
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dprintk("NFS reply remove: %d\n", status);
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return status;
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}
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static void
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nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
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{
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msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
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}
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static int
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nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
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{
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struct nfs_removeres *res;
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if (nfs3_async_handle_jukebox(task, dir))
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return 0;
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res = task->tk_msg.rpc_resp;
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nfs_post_op_update_inode(dir, &res->dir_attr);
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return 1;
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}
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static int
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nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
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struct inode *new_dir, struct qstr *new_name)
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{
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struct nfs_fattr old_dir_attr, new_dir_attr;
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struct nfs3_renameargs arg = {
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.fromfh = NFS_FH(old_dir),
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.fromname = old_name->name,
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.fromlen = old_name->len,
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.tofh = NFS_FH(new_dir),
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.toname = new_name->name,
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.tolen = new_name->len
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};
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struct nfs3_renameres res = {
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.fromattr = &old_dir_attr,
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.toattr = &new_dir_attr
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};
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_RENAME],
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.rpc_argp = &arg,
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.rpc_resp = &res,
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};
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int status;
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dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
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nfs_fattr_init(&old_dir_attr);
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nfs_fattr_init(&new_dir_attr);
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status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
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nfs_post_op_update_inode(old_dir, &old_dir_attr);
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nfs_post_op_update_inode(new_dir, &new_dir_attr);
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dprintk("NFS reply rename: %d\n", status);
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return status;
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}
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static int
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nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
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{
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struct nfs_fattr dir_attr, fattr;
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struct nfs3_linkargs arg = {
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.fromfh = NFS_FH(inode),
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.tofh = NFS_FH(dir),
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.toname = name->name,
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.tolen = name->len
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};
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struct nfs3_linkres res = {
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.dir_attr = &dir_attr,
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.fattr = &fattr
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};
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
|
|
.rpc_argp = &arg,
|
|
.rpc_resp = &res,
|
|
};
|
|
int status;
|
|
|
|
dprintk("NFS call link %s\n", name->name);
|
|
nfs_fattr_init(&dir_attr);
|
|
nfs_fattr_init(&fattr);
|
|
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
|
|
nfs_post_op_update_inode(dir, &dir_attr);
|
|
nfs_post_op_update_inode(inode, &fattr);
|
|
dprintk("NFS reply link: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
|
|
unsigned int len, struct iattr *sattr)
|
|
{
|
|
struct nfs3_createdata *data;
|
|
int status = -ENOMEM;
|
|
|
|
if (len > NFS3_MAXPATHLEN)
|
|
return -ENAMETOOLONG;
|
|
|
|
dprintk("NFS call symlink %s\n", dentry->d_name.name);
|
|
|
|
data = nfs3_alloc_createdata();
|
|
if (data == NULL)
|
|
goto out;
|
|
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK];
|
|
data->arg.symlink.fromfh = NFS_FH(dir);
|
|
data->arg.symlink.fromname = dentry->d_name.name;
|
|
data->arg.symlink.fromlen = dentry->d_name.len;
|
|
data->arg.symlink.pages = &page;
|
|
data->arg.symlink.pathlen = len;
|
|
data->arg.symlink.sattr = sattr;
|
|
|
|
status = nfs3_do_create(dir, dentry, data);
|
|
|
|
nfs3_free_createdata(data);
|
|
out:
|
|
dprintk("NFS reply symlink: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
|
|
{
|
|
struct nfs3_createdata *data;
|
|
int mode = sattr->ia_mode;
|
|
int status = -ENOMEM;
|
|
|
|
dprintk("NFS call mkdir %s\n", dentry->d_name.name);
|
|
|
|
sattr->ia_mode &= ~current->fs->umask;
|
|
|
|
data = nfs3_alloc_createdata();
|
|
if (data == NULL)
|
|
goto out;
|
|
|
|
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
|
|
data->arg.mkdir.fh = NFS_FH(dir);
|
|
data->arg.mkdir.name = dentry->d_name.name;
|
|
data->arg.mkdir.len = dentry->d_name.len;
|
|
data->arg.mkdir.sattr = sattr;
|
|
|
|
status = nfs3_do_create(dir, dentry, data);
|
|
if (status != 0)
|
|
goto out;
|
|
|
|
status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
|
|
out:
|
|
nfs3_free_createdata(data);
|
|
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
|
|
};
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
|
|
.rpc_argp = &arg,
|
|
.rpc_resp = &dir_attr,
|
|
};
|
|
int status;
|
|
|
|
dprintk("NFS call rmdir %s\n", name->name);
|
|
nfs_fattr_init(&dir_attr);
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
|
nfs_post_op_update_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;
|
|
__be32 *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;
|
|
|
|
if (plus)
|
|
msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
|
|
|
|
dprintk("NFS call readdir%s %d\n",
|
|
plus? "plus" : "", (unsigned int) cookie);
|
|
|
|
nfs_fattr_init(&dir_attr);
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
|
|
|
nfs_invalidate_atime(dir);
|
|
|
|
nfs_refresh_inode(dir, &dir_attr);
|
|
dprintk("NFS reply readdir: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
|
|
dev_t rdev)
|
|
{
|
|
struct nfs3_createdata *data;
|
|
mode_t mode = sattr->ia_mode;
|
|
int status = -ENOMEM;
|
|
|
|
dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name,
|
|
MAJOR(rdev), MINOR(rdev));
|
|
|
|
sattr->ia_mode &= ~current->fs->umask;
|
|
|
|
data = nfs3_alloc_createdata();
|
|
if (data == NULL)
|
|
goto out;
|
|
|
|
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
|
|
data->arg.mknod.fh = NFS_FH(dir);
|
|
data->arg.mknod.name = dentry->d_name.name;
|
|
data->arg.mknod.len = dentry->d_name.len;
|
|
data->arg.mknod.sattr = sattr;
|
|
data->arg.mknod.rdev = rdev;
|
|
|
|
switch (sattr->ia_mode & S_IFMT) {
|
|
case S_IFBLK:
|
|
data->arg.mknod.type = NF3BLK;
|
|
break;
|
|
case S_IFCHR:
|
|
data->arg.mknod.type = NF3CHR;
|
|
break;
|
|
case S_IFIFO:
|
|
data->arg.mknod.type = NF3FIFO;
|
|
break;
|
|
case S_IFSOCK:
|
|
data->arg.mknod.type = NF3SOCK;
|
|
break;
|
|
default:
|
|
status = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
status = nfs3_do_create(dir, dentry, data);
|
|
if (status != 0)
|
|
goto out;
|
|
status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
|
|
out:
|
|
nfs3_free_createdata(data);
|
|
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)
|
|
{
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
|
|
.rpc_argp = fhandle,
|
|
.rpc_resp = stat,
|
|
};
|
|
int status;
|
|
|
|
dprintk("NFS call fsstat\n");
|
|
nfs_fattr_init(stat->fattr);
|
|
status = rpc_call_sync(server->client, &msg, 0);
|
|
dprintk("NFS reply statfs: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle,
|
|
struct nfs_fsinfo *info)
|
|
{
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
|
|
.rpc_argp = fhandle,
|
|
.rpc_resp = info,
|
|
};
|
|
int status;
|
|
|
|
dprintk("NFS call fsinfo\n");
|
|
nfs_fattr_init(info->fattr);
|
|
status = rpc_call_sync(client, &msg, 0);
|
|
dprintk("NFS reply fsinfo: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via
|
|
* nfs_create_server
|
|
*/
|
|
static int
|
|
nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
|
|
struct nfs_fsinfo *info)
|
|
{
|
|
int status;
|
|
|
|
status = do_proc_fsinfo(server->client, fhandle, info);
|
|
if (status && server->nfs_client->cl_rpcclient != server->client)
|
|
status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
|
|
struct nfs_pathconf *info)
|
|
{
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
|
|
.rpc_argp = fhandle,
|
|
.rpc_resp = info,
|
|
};
|
|
int status;
|
|
|
|
dprintk("NFS call pathconf\n");
|
|
nfs_fattr_init(info->fattr);
|
|
status = rpc_call_sync(server->client, &msg, 0);
|
|
dprintk("NFS reply pathconf: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
|
|
{
|
|
if (nfs3_async_handle_jukebox(task, data->inode))
|
|
return -EAGAIN;
|
|
|
|
nfs_invalidate_atime(data->inode);
|
|
nfs_refresh_inode(data->inode, &data->fattr);
|
|
return 0;
|
|
}
|
|
|
|
static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
|
|
{
|
|
msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
|
|
}
|
|
|
|
static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
|
|
{
|
|
if (nfs3_async_handle_jukebox(task, data->inode))
|
|
return -EAGAIN;
|
|
if (task->tk_status >= 0)
|
|
nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr);
|
|
return 0;
|
|
}
|
|
|
|
static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
|
|
{
|
|
msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
|
|
}
|
|
|
|
static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
|
|
{
|
|
if (nfs3_async_handle_jukebox(task, data->inode))
|
|
return -EAGAIN;
|
|
nfs_refresh_inode(data->inode, data->res.fattr);
|
|
return 0;
|
|
}
|
|
|
|
static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
|
|
{
|
|
msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
|
|
{
|
|
struct inode *inode = filp->f_path.dentry->d_inode;
|
|
|
|
return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
|
|
}
|
|
|
|
const struct nfs_rpc_ops nfs_v3_clientops = {
|
|
.version = 3, /* protocol version */
|
|
.dentry_ops = &nfs_dentry_operations,
|
|
.dir_inode_ops = &nfs3_dir_inode_operations,
|
|
.file_inode_ops = &nfs3_file_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,
|
|
.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,
|
|
.read_done = nfs3_read_done,
|
|
.write_setup = nfs3_proc_write_setup,
|
|
.write_done = nfs3_write_done,
|
|
.commit_setup = nfs3_proc_commit_setup,
|
|
.commit_done = nfs3_commit_done,
|
|
.lock = nfs3_proc_lock,
|
|
.clear_acl_cache = nfs3_forget_cached_acls,
|
|
.close_context = nfs_close_context,
|
|
};
|