788e7a89a0
This patch inverts the callback hierarchy for NFS write calls. Instead of having the NFSv2/v3/v4-specific code set up the RPC callback ops, we allow the original caller to do so. This allows for more flexibility w.r.t. how to set up and tear down the nfs_write_data structure while still allowing the NFSv3/v4 code to perform error handling. The greater flexibility is needed by the asynchronous O_DIRECT code, which wants to be able to hold on to the original nfs_write_data structures after the WRITE RPC call has completed in order to be able to replay them if the COMMIT call determines that the server has rebooted. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
946 lines
24 KiB
C
946 lines
24 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/smp_lock.h>
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#include <linux/nfs_mount.h>
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#include "iostat.h"
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#define NFSDBG_FACILITY NFSDBG_PROC
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extern struct rpc_procinfo nfs3_procedures[];
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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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sigset_t oldset;
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int res;
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rpc_clnt_sigmask(clnt, &oldset);
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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_interruptible(NFS_JUKEBOX_RETRY_TIME);
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res = -ERESTARTSYS;
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} while (!signalled());
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rpc_clnt_sigunmask(clnt, &oldset);
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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", __FUNCTION__);
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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", __FUNCTION__, 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", __FUNCTION__, 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_read_super.
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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->client_sys != server->client)
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status = do_proc_get_root(server->client_sys, 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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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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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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if (status >= 0)
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status = nfs_refresh_inode(dir, &dir_attr);
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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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static int nfs3_proc_read(struct nfs_read_data *rdata)
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{
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int flags = rdata->flags;
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struct inode * inode = rdata->inode;
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struct nfs_fattr * fattr = rdata->res.fattr;
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_READ],
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.rpc_argp = &rdata->args,
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.rpc_resp = &rdata->res,
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.rpc_cred = rdata->cred,
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};
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int status;
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dprintk("NFS call read %d @ %Ld\n", rdata->args.count,
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(long long) rdata->args.offset);
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nfs_fattr_init(fattr);
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status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
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if (status >= 0)
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nfs_refresh_inode(inode, fattr);
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dprintk("NFS reply read: %d\n", status);
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return status;
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}
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static int nfs3_proc_write(struct nfs_write_data *wdata)
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{
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int rpcflags = wdata->flags;
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struct inode * inode = wdata->inode;
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struct nfs_fattr * fattr = wdata->res.fattr;
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_WRITE],
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.rpc_argp = &wdata->args,
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.rpc_resp = &wdata->res,
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.rpc_cred = wdata->cred,
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};
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int status;
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dprintk("NFS call write %d @ %Ld\n", wdata->args.count,
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(long long) wdata->args.offset);
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nfs_fattr_init(fattr);
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status = rpc_call_sync(NFS_CLIENT(inode), &msg, rpcflags);
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if (status >= 0)
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nfs_post_op_update_inode(inode, fattr);
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dprintk("NFS reply write: %d\n", status);
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return status < 0? status : wdata->res.count;
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}
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static int nfs3_proc_commit(struct nfs_write_data *cdata)
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{
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struct inode * inode = cdata->inode;
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struct nfs_fattr * fattr = cdata->res.fattr;
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT],
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.rpc_argp = &cdata->args,
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.rpc_resp = &cdata->res,
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.rpc_cred = cdata->cred,
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};
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int status;
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dprintk("NFS call commit %d @ %Ld\n", cdata->args.count,
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(long long) cdata->args.offset);
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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_post_op_update_inode(inode, fattr);
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dprintk("NFS reply commit: %d\n", status);
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return status;
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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 nfs_fh fhandle;
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struct nfs_fattr fattr;
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struct nfs_fattr dir_attr;
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struct nfs3_createargs arg = {
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.fh = NFS_FH(dir),
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.name = dentry->d_name.name,
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.len = dentry->d_name.len,
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.sattr = sattr,
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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_CREATE],
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.rpc_argp = &arg,
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.rpc_resp = &res,
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};
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mode_t mode = sattr->ia_mode;
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int status;
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dprintk("NFS call create %s\n", dentry->d_name.name);
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arg.createmode = NFS3_CREATE_UNCHECKED;
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if (flags & O_EXCL) {
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arg.createmode = NFS3_CREATE_EXCLUSIVE;
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arg.verifier[0] = jiffies;
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arg.verifier[1] = current->pid;
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}
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sattr->ia_mode &= ~current->fs->umask;
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again:
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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 the server doesn't support the exclusive creation semantics,
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* try again with simple 'guarded' mode. */
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if (status == NFSERR_NOTSUPP) {
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switch (arg.createmode) {
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case NFS3_CREATE_EXCLUSIVE:
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arg.createmode = NFS3_CREATE_GUARDED;
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break;
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case NFS3_CREATE_GUARDED:
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arg.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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goto again;
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}
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if (status == 0)
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status = nfs_instantiate(dentry, &fhandle, &fattr);
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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 (arg.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, &fattr, sattr);
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if (status == 0)
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nfs_setattr_update_inode(dentry->d_inode, sattr);
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nfs_refresh_inode(dentry->d_inode, &fattr);
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dprintk("NFS reply setattr (post-create): %d\n", status);
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}
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if (status != 0)
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goto out;
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status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
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out:
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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_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 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 = &dir_attr,
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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(&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, &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 int
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nfs3_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name)
|
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{
|
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struct unlinkxdr {
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struct nfs3_diropargs arg;
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struct nfs_fattr res;
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} *ptr;
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ptr = (struct unlinkxdr *)kmalloc(sizeof(*ptr), GFP_KERNEL);
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if (!ptr)
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return -ENOMEM;
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ptr->arg.fh = NFS_FH(dir->d_inode);
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ptr->arg.name = name->name;
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ptr->arg.len = name->len;
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nfs_fattr_init(&ptr->res);
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msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
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msg->rpc_argp = &ptr->arg;
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msg->rpc_resp = &ptr->res;
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return 0;
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}
|
|
|
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static int
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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, dir->d_inode))
|
|
return 1;
|
|
if (msg->rpc_argp) {
|
|
dir_attr = (struct nfs_fattr*)msg->rpc_resp;
|
|
nfs_post_op_update_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
|
|
};
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_RENAME],
|
|
.rpc_argp = &arg,
|
|
.rpc_resp = &res,
|
|
};
|
|
int status;
|
|
|
|
dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
|
|
nfs_fattr_init(&old_dir_attr);
|
|
nfs_fattr_init(&new_dir_attr);
|
|
status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
|
|
nfs_post_op_update_inode(old_dir, &old_dir_attr);
|
|
nfs_post_op_update_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
|
|
};
|
|
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 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
|
|
};
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK],
|
|
.rpc_argp = &arg,
|
|
.rpc_resp = &res,
|
|
};
|
|
int status;
|
|
|
|
if (path->len > NFS3_MAXPATHLEN)
|
|
return -ENAMETOOLONG;
|
|
dprintk("NFS call symlink %s -> %s\n", name->name, path->name);
|
|
nfs_fattr_init(&dir_attr);
|
|
nfs_fattr_init(fattr);
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
|
nfs_post_op_update_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
|
|
};
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR],
|
|
.rpc_argp = &arg,
|
|
.rpc_resp = &res,
|
|
};
|
|
int mode = sattr->ia_mode;
|
|
int status;
|
|
|
|
dprintk("NFS call mkdir %s\n", dentry->d_name.name);
|
|
|
|
sattr->ia_mode &= ~current->fs->umask;
|
|
|
|
nfs_fattr_init(&dir_attr);
|
|
nfs_fattr_init(&fattr);
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
|
nfs_post_op_update_inode(dir, &dir_attr);
|
|
if (status != 0)
|
|
goto out;
|
|
status = nfs_instantiate(dentry, &fhandle, &fattr);
|
|
if (status != 0)
|
|
goto out;
|
|
status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
|
|
out:
|
|
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;
|
|
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);
|
|
|
|
nfs_fattr_init(&dir_attr);
|
|
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
|
|
};
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD],
|
|
.rpc_argp = &arg,
|
|
.rpc_resp = &res,
|
|
};
|
|
mode_t mode = sattr->ia_mode;
|
|
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));
|
|
|
|
sattr->ia_mode &= ~current->fs->umask;
|
|
|
|
nfs_fattr_init(&dir_attr);
|
|
nfs_fattr_init(&fattr);
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
|
nfs_post_op_update_inode(dir, &dir_attr);
|
|
if (status != 0)
|
|
goto out;
|
|
status = nfs_instantiate(dentry, &fh, &fattr);
|
|
if (status != 0)
|
|
goto out;
|
|
status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
|
|
out:
|
|
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
|
|
nfs3_proc_fsinfo(struct nfs_server *server, 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(server->client_sys, &msg, 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)
|
|
{
|
|
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;
|
|
}
|
|
|
|
extern u32 *nfs3_decode_dirent(u32 *, struct nfs_entry *, int);
|
|
|
|
static void nfs3_read_done(struct rpc_task *task, void *calldata)
|
|
{
|
|
struct nfs_read_data *data = calldata;
|
|
|
|
if (nfs3_async_handle_jukebox(task, data->inode))
|
|
return;
|
|
/* Call back common NFS readpage processing */
|
|
if (task->tk_status >= 0)
|
|
nfs_refresh_inode(data->inode, &data->fattr);
|
|
nfs_readpage_result(task, calldata);
|
|
}
|
|
|
|
static const struct rpc_call_ops nfs3_read_ops = {
|
|
.rpc_call_done = nfs3_read_done,
|
|
.rpc_release = nfs_readdata_release,
|
|
};
|
|
|
|
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), flags, &nfs3_read_ops, data);
|
|
rpc_call_setup(task, &msg, 0);
|
|
}
|
|
|
|
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(data->inode, data->res.fattr);
|
|
return 0;
|
|
}
|
|
|
|
static void nfs3_proc_write_setup(struct nfs_write_data *data, int how)
|
|
{
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_WRITE],
|
|
.rpc_argp = &data->args,
|
|
.rpc_resp = &data->res,
|
|
.rpc_cred = data->cred,
|
|
};
|
|
|
|
data->args.stable = NFS_UNSTABLE;
|
|
if (how & FLUSH_STABLE) {
|
|
data->args.stable = NFS_FILE_SYNC;
|
|
if (NFS_I(data->inode)->ncommit)
|
|
data->args.stable = NFS_DATA_SYNC;
|
|
}
|
|
|
|
/* Finalize the task. */
|
|
rpc_call_setup(&data->task, &msg, 0);
|
|
}
|
|
|
|
static int nfs3_commit_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(data->inode, data->res.fattr);
|
|
return 0;
|
|
}
|
|
|
|
static void nfs3_proc_commit_setup(struct nfs_write_data *data, int how)
|
|
{
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT],
|
|
.rpc_argp = &data->args,
|
|
.rpc_resp = &data->res,
|
|
.rpc_cred = data->cred,
|
|
};
|
|
|
|
rpc_call_setup(&data->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 = &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,
|
|
.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,
|
|
.write_done = nfs3_write_done,
|
|
.commit_setup = nfs3_proc_commit_setup,
|
|
.commit_done = nfs3_commit_done,
|
|
.file_open = nfs_open,
|
|
.file_release = nfs_release,
|
|
.lock = nfs3_proc_lock,
|
|
.clear_acl_cache = nfs3_forget_cached_acls,
|
|
};
|