860 строки
22 KiB
C
860 строки
22 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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#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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set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout(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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static inline int
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nfs3_rpc_call_wrapper(struct rpc_clnt *clnt, u32 proc, void *argp, void *resp, int flags)
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{
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[proc],
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.rpc_argp = argp,
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.rpc_resp = resp,
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};
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return nfs3_rpc_wrapper(clnt, &msg, flags);
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}
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#define rpc_call(clnt, proc, argp, resp, flags) \
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nfs3_rpc_call_wrapper(clnt, proc, argp, resp, flags)
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#define rpc_call_sync(clnt, msg, flags) \
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nfs3_rpc_wrapper(clnt, msg, flags)
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static int
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nfs3_async_handle_jukebox(struct rpc_task *task)
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{
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if (task->tk_status != -EJUKEBOX)
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return 0;
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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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/*
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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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dprintk("%s: call fsinfo\n", __FUNCTION__);
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info->fattr->valid = 0;
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status = rpc_call(server->client_sys, NFS3PROC_FSINFO, fhandle, info, 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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status = rpc_call(server->client_sys, NFS3PROC_GETATTR, fhandle, info->fattr, 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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* 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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int status;
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dprintk("NFS call getattr\n");
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fattr->valid = 0;
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status = rpc_call(server->client, NFS3PROC_GETATTR,
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fhandle, fattr, 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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int status;
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dprintk("NFS call setattr\n");
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fattr->valid = 0;
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status = rpc_call(NFS_CLIENT(inode), NFS3PROC_SETATTR, &arg, fattr, 0);
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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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int status;
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dprintk("NFS call lookup %s\n", name->name);
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dir_attr.valid = 0;
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fattr->valid = 0;
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status = rpc_call(NFS_CLIENT(dir), NFS3PROC_LOOKUP, &arg, &res, 0);
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if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR))
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status = rpc_call(NFS_CLIENT(dir), NFS3PROC_GETATTR,
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fhandle, fattr, 0);
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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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fattr.valid = 0;
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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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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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int status;
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dprintk("NFS call readlink\n");
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fattr.valid = 0;
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status = rpc_call(NFS_CLIENT(inode), NFS3PROC_READLINK,
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&args, &fattr, 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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fattr->valid = 0;
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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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fattr->valid = 0;
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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_refresh_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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fattr->valid = 0;
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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_refresh_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)
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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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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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again:
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dir_attr.valid = 0;
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fattr.valid = 0;
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status = rpc_call(NFS_CLIENT(dir), NFS3PROC_CREATE, &arg, &res, 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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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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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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dir_attr.valid = 0;
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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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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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ptr->res.valid = 0;
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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)
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{
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struct rpc_message *msg = &task->tk_msg;
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struct nfs_fattr *dir_attr;
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if (nfs3_async_handle_jukebox(task))
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return 1;
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if (msg->rpc_argp) {
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dir_attr = (struct nfs_fattr*)msg->rpc_resp;
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nfs_refresh_inode(dir->d_inode, dir_attr);
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kfree(msg->rpc_argp);
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}
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return 0;
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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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int status;
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dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
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old_dir_attr.valid = 0;
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new_dir_attr.valid = 0;
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status = rpc_call(NFS_CLIENT(old_dir), NFS3PROC_RENAME, &arg, &res, 0);
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nfs_refresh_inode(old_dir, &old_dir_attr);
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nfs_refresh_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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};
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int status;
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dprintk("NFS call link %s\n", name->name);
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dir_attr.valid = 0;
|
|
fattr.valid = 0;
|
|
status = rpc_call(NFS_CLIENT(inode), NFS3PROC_LINK, &arg, &res, 0);
|
|
nfs_refresh_inode(dir, &dir_attr);
|
|
nfs_refresh_inode(inode, &fattr);
|
|
dprintk("NFS reply link: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path,
|
|
struct iattr *sattr, struct nfs_fh *fhandle,
|
|
struct nfs_fattr *fattr)
|
|
{
|
|
struct nfs_fattr dir_attr;
|
|
struct nfs3_symlinkargs arg = {
|
|
.fromfh = NFS_FH(dir),
|
|
.fromname = name->name,
|
|
.fromlen = name->len,
|
|
.topath = path->name,
|
|
.tolen = path->len,
|
|
.sattr = sattr
|
|
};
|
|
struct nfs3_diropres res = {
|
|
.dir_attr = &dir_attr,
|
|
.fh = fhandle,
|
|
.fattr = fattr
|
|
};
|
|
int status;
|
|
|
|
if (path->len > NFS3_MAXPATHLEN)
|
|
return -ENAMETOOLONG;
|
|
dprintk("NFS call symlink %s -> %s\n", name->name, path->name);
|
|
dir_attr.valid = 0;
|
|
fattr->valid = 0;
|
|
status = rpc_call(NFS_CLIENT(dir), NFS3PROC_SYMLINK, &arg, &res, 0);
|
|
nfs_refresh_inode(dir, &dir_attr);
|
|
dprintk("NFS reply symlink: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
|
|
{
|
|
struct nfs_fh fhandle;
|
|
struct nfs_fattr fattr, dir_attr;
|
|
struct nfs3_mkdirargs arg = {
|
|
.fh = NFS_FH(dir),
|
|
.name = dentry->d_name.name,
|
|
.len = dentry->d_name.len,
|
|
.sattr = sattr
|
|
};
|
|
struct nfs3_diropres res = {
|
|
.dir_attr = &dir_attr,
|
|
.fh = &fhandle,
|
|
.fattr = &fattr
|
|
};
|
|
int status;
|
|
|
|
dprintk("NFS call mkdir %s\n", dentry->d_name.name);
|
|
dir_attr.valid = 0;
|
|
fattr.valid = 0;
|
|
status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKDIR, &arg, &res, 0);
|
|
nfs_refresh_inode(dir, &dir_attr);
|
|
if (status == 0)
|
|
status = nfs_instantiate(dentry, &fhandle, &fattr);
|
|
dprintk("NFS reply mkdir: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
|
|
{
|
|
struct nfs_fattr dir_attr;
|
|
struct nfs3_diropargs arg = {
|
|
.fh = NFS_FH(dir),
|
|
.name = name->name,
|
|
.len = name->len
|
|
};
|
|
int status;
|
|
|
|
dprintk("NFS call rmdir %s\n", name->name);
|
|
dir_attr.valid = 0;
|
|
status = rpc_call(NFS_CLIENT(dir), NFS3PROC_RMDIR, &arg, &dir_attr, 0);
|
|
nfs_refresh_inode(dir, &dir_attr);
|
|
dprintk("NFS reply rmdir: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* The READDIR implementation is somewhat hackish - we pass the user buffer
|
|
* to the encode function, which installs it in the receive iovec.
|
|
* The decode function itself doesn't perform any decoding, it just makes
|
|
* sure the reply is syntactically correct.
|
|
*
|
|
* Also note that this implementation handles both plain readdir and
|
|
* readdirplus.
|
|
*/
|
|
static int
|
|
nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
|
|
u64 cookie, struct page *page, unsigned int count, int plus)
|
|
{
|
|
struct inode *dir = dentry->d_inode;
|
|
struct nfs_fattr dir_attr;
|
|
u32 *verf = NFS_COOKIEVERF(dir);
|
|
struct nfs3_readdirargs arg = {
|
|
.fh = NFS_FH(dir),
|
|
.cookie = cookie,
|
|
.verf = {verf[0], verf[1]},
|
|
.plus = plus,
|
|
.count = count,
|
|
.pages = &page
|
|
};
|
|
struct nfs3_readdirres res = {
|
|
.dir_attr = &dir_attr,
|
|
.verf = verf,
|
|
.plus = plus
|
|
};
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
|
|
.rpc_argp = &arg,
|
|
.rpc_resp = &res,
|
|
.rpc_cred = cred
|
|
};
|
|
int status;
|
|
|
|
lock_kernel();
|
|
|
|
if (plus)
|
|
msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
|
|
|
|
dprintk("NFS call readdir%s %d\n",
|
|
plus? "plus" : "", (unsigned int) cookie);
|
|
|
|
dir_attr.valid = 0;
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
|
nfs_refresh_inode(dir, &dir_attr);
|
|
dprintk("NFS reply readdir: %d\n", status);
|
|
unlock_kernel();
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
|
|
dev_t rdev)
|
|
{
|
|
struct nfs_fh fh;
|
|
struct nfs_fattr fattr, dir_attr;
|
|
struct nfs3_mknodargs arg = {
|
|
.fh = NFS_FH(dir),
|
|
.name = dentry->d_name.name,
|
|
.len = dentry->d_name.len,
|
|
.sattr = sattr,
|
|
.rdev = rdev
|
|
};
|
|
struct nfs3_diropres res = {
|
|
.dir_attr = &dir_attr,
|
|
.fh = &fh,
|
|
.fattr = &fattr
|
|
};
|
|
int status;
|
|
|
|
switch (sattr->ia_mode & S_IFMT) {
|
|
case S_IFBLK: arg.type = NF3BLK; break;
|
|
case S_IFCHR: arg.type = NF3CHR; break;
|
|
case S_IFIFO: arg.type = NF3FIFO; break;
|
|
case S_IFSOCK: arg.type = NF3SOCK; break;
|
|
default: return -EINVAL;
|
|
}
|
|
|
|
dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name,
|
|
MAJOR(rdev), MINOR(rdev));
|
|
dir_attr.valid = 0;
|
|
fattr.valid = 0;
|
|
status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKNOD, &arg, &res, 0);
|
|
nfs_refresh_inode(dir, &dir_attr);
|
|
if (status == 0)
|
|
status = nfs_instantiate(dentry, &fh, &fattr);
|
|
dprintk("NFS reply mknod: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
|
|
struct nfs_fsstat *stat)
|
|
{
|
|
int status;
|
|
|
|
dprintk("NFS call fsstat\n");
|
|
stat->fattr->valid = 0;
|
|
status = rpc_call(server->client, NFS3PROC_FSSTAT, fhandle, stat, 0);
|
|
dprintk("NFS reply statfs: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
|
|
struct nfs_fsinfo *info)
|
|
{
|
|
int status;
|
|
|
|
dprintk("NFS call fsinfo\n");
|
|
info->fattr->valid = 0;
|
|
status = rpc_call(server->client_sys, NFS3PROC_FSINFO, fhandle, info, 0);
|
|
dprintk("NFS reply fsinfo: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
|
|
struct nfs_pathconf *info)
|
|
{
|
|
int status;
|
|
|
|
dprintk("NFS call pathconf\n");
|
|
info->fattr->valid = 0;
|
|
status = rpc_call(server->client, NFS3PROC_PATHCONF, fhandle, info, 0);
|
|
dprintk("NFS reply pathconf: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
extern u32 *nfs3_decode_dirent(u32 *, struct nfs_entry *, int);
|
|
|
|
static void
|
|
nfs3_read_done(struct rpc_task *task)
|
|
{
|
|
struct nfs_write_data *data = (struct nfs_write_data *) task->tk_calldata;
|
|
|
|
if (nfs3_async_handle_jukebox(task))
|
|
return;
|
|
/* Call back common NFS readpage processing */
|
|
if (task->tk_status >= 0)
|
|
nfs_refresh_inode(data->inode, &data->fattr);
|
|
nfs_readpage_result(task);
|
|
}
|
|
|
|
static void
|
|
nfs3_proc_read_setup(struct nfs_read_data *data)
|
|
{
|
|
struct rpc_task *task = &data->task;
|
|
struct inode *inode = data->inode;
|
|
int flags;
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_READ],
|
|
.rpc_argp = &data->args,
|
|
.rpc_resp = &data->res,
|
|
.rpc_cred = data->cred,
|
|
};
|
|
|
|
/* N.B. Do we need to test? Never called for swapfile inode */
|
|
flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0);
|
|
|
|
/* Finalize the task. */
|
|
rpc_init_task(task, NFS_CLIENT(inode), nfs3_read_done, flags);
|
|
rpc_call_setup(task, &msg, 0);
|
|
}
|
|
|
|
static void
|
|
nfs3_write_done(struct rpc_task *task)
|
|
{
|
|
struct nfs_write_data *data;
|
|
|
|
if (nfs3_async_handle_jukebox(task))
|
|
return;
|
|
data = (struct nfs_write_data *)task->tk_calldata;
|
|
if (task->tk_status >= 0)
|
|
nfs_refresh_inode(data->inode, data->res.fattr);
|
|
nfs_writeback_done(task);
|
|
}
|
|
|
|
static void
|
|
nfs3_proc_write_setup(struct nfs_write_data *data, int how)
|
|
{
|
|
struct rpc_task *task = &data->task;
|
|
struct inode *inode = data->inode;
|
|
int stable;
|
|
int flags;
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_WRITE],
|
|
.rpc_argp = &data->args,
|
|
.rpc_resp = &data->res,
|
|
.rpc_cred = data->cred,
|
|
};
|
|
|
|
if (how & FLUSH_STABLE) {
|
|
if (!NFS_I(inode)->ncommit)
|
|
stable = NFS_FILE_SYNC;
|
|
else
|
|
stable = NFS_DATA_SYNC;
|
|
} else
|
|
stable = NFS_UNSTABLE;
|
|
data->args.stable = stable;
|
|
|
|
/* Set the initial flags for the task. */
|
|
flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
|
|
|
|
/* Finalize the task. */
|
|
rpc_init_task(task, NFS_CLIENT(inode), nfs3_write_done, flags);
|
|
rpc_call_setup(task, &msg, 0);
|
|
}
|
|
|
|
static void
|
|
nfs3_commit_done(struct rpc_task *task)
|
|
{
|
|
struct nfs_write_data *data;
|
|
|
|
if (nfs3_async_handle_jukebox(task))
|
|
return;
|
|
data = (struct nfs_write_data *)task->tk_calldata;
|
|
if (task->tk_status >= 0)
|
|
nfs_refresh_inode(data->inode, data->res.fattr);
|
|
nfs_commit_done(task);
|
|
}
|
|
|
|
static void
|
|
nfs3_proc_commit_setup(struct nfs_write_data *data, int how)
|
|
{
|
|
struct rpc_task *task = &data->task;
|
|
struct inode *inode = data->inode;
|
|
int flags;
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT],
|
|
.rpc_argp = &data->args,
|
|
.rpc_resp = &data->res,
|
|
.rpc_cred = data->cred,
|
|
};
|
|
|
|
/* Set the initial flags for the task. */
|
|
flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
|
|
|
|
/* Finalize the task. */
|
|
rpc_init_task(task, NFS_CLIENT(inode), nfs3_commit_done, flags);
|
|
rpc_call_setup(task, &msg, 0);
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
|
|
{
|
|
return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl);
|
|
}
|
|
|
|
struct nfs_rpc_ops nfs_v3_clientops = {
|
|
.version = 3, /* protocol version */
|
|
.dentry_ops = &nfs_dentry_operations,
|
|
.dir_inode_ops = &nfs_dir_inode_operations,
|
|
.getroot = nfs3_proc_get_root,
|
|
.getattr = nfs3_proc_getattr,
|
|
.setattr = nfs3_proc_setattr,
|
|
.lookup = nfs3_proc_lookup,
|
|
.access = nfs3_proc_access,
|
|
.readlink = nfs3_proc_readlink,
|
|
.read = nfs3_proc_read,
|
|
.write = nfs3_proc_write,
|
|
.commit = nfs3_proc_commit,
|
|
.create = nfs3_proc_create,
|
|
.remove = nfs3_proc_remove,
|
|
.unlink_setup = nfs3_proc_unlink_setup,
|
|
.unlink_done = nfs3_proc_unlink_done,
|
|
.rename = nfs3_proc_rename,
|
|
.link = nfs3_proc_link,
|
|
.symlink = nfs3_proc_symlink,
|
|
.mkdir = nfs3_proc_mkdir,
|
|
.rmdir = nfs3_proc_rmdir,
|
|
.readdir = nfs3_proc_readdir,
|
|
.mknod = nfs3_proc_mknod,
|
|
.statfs = nfs3_proc_statfs,
|
|
.fsinfo = nfs3_proc_fsinfo,
|
|
.pathconf = nfs3_proc_pathconf,
|
|
.decode_dirent = nfs3_decode_dirent,
|
|
.read_setup = nfs3_proc_read_setup,
|
|
.write_setup = nfs3_proc_write_setup,
|
|
.commit_setup = nfs3_proc_commit_setup,
|
|
.file_open = nfs_open,
|
|
.file_release = nfs_release,
|
|
.lock = nfs3_proc_lock,
|
|
};
|