diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/Kconfig | 136 | ||||
| -rw-r--r-- | fs/lockd/clntproc.c | 2 | ||||
| -rw-r--r-- | fs/nfs/callback.c | 34 | ||||
| -rw-r--r-- | fs/nfs/client.c | 13 | ||||
| -rw-r--r-- | fs/nfs/dir.c | 26 | ||||
| -rw-r--r-- | fs/nfs/direct.c | 4 | ||||
| -rw-r--r-- | fs/nfs/file.c | 151 | ||||
| -rw-r--r-- | fs/nfs/inode.c | 8 | ||||
| -rw-r--r-- | fs/nfs/internal.h | 1 | ||||
| -rw-r--r-- | fs/nfs/iostat.h | 119 | ||||
| -rw-r--r-- | fs/nfs/nfs3acl.c | 9 | ||||
| -rw-r--r-- | fs/nfs/nfs3proc.c | 275 | ||||
| -rw-r--r-- | fs/nfs/nfs4proc.c | 263 | ||||
| -rw-r--r-- | fs/nfs/nfsroot.c | 10 | ||||
| -rw-r--r-- | fs/nfs/proc.c | 28 | ||||
| -rw-r--r-- | fs/nfs/super.c | 878 | ||||
| -rw-r--r-- | fs/nfs/write.c | 307 | ||||
| -rw-r--r-- | fs/nfsd/nfs4callback.c | 2 |
18 files changed, 1296 insertions, 970 deletions
diff --git a/fs/Kconfig b/fs/Kconfig index 313b2e06ded5..84ab76a206a0 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -1544,10 +1544,6 @@ config UFS_FS The recently released UFS2 variant (used in FreeBSD 5.x) is READ-ONLY supported. - If you only intend to mount files from some other Unix over the - network using NFS, you don't need the UFS file system support (but - you need NFS file system support obviously). - Note that this option is generally not needed for floppies, since a good portable way to transport files and directories between unixes (and even other operating systems) is given by the tar program ("man @@ -1587,6 +1583,7 @@ menuconfig NETWORK_FILESYSTEMS Say Y here to get to see options for network filesystems and filesystem-related networking code, such as NFS daemon and RPCSEC security modules. + This option alone does not add any kernel code. If you say N, all options in this submenu will be skipped and @@ -1595,76 +1592,92 @@ menuconfig NETWORK_FILESYSTEMS if NETWORK_FILESYSTEMS config NFS_FS - tristate "NFS file system support" + tristate "NFS client support" depends on INET select LOCKD select SUNRPC select NFS_ACL_SUPPORT if NFS_V3_ACL help - If you are connected to some other (usually local) Unix computer - (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing - on that computer (the NFS server) using the Network File Sharing - protocol, say Y. "Mounting files" means that the client can access - the files with usual UNIX commands as if they were sitting on the - client's hard disk. For this to work, the server must run the - programs nfsd and mountd (but does not need to have NFS file system - support enabled in its kernel). NFS is explained in the Network - Administrator's Guide, available from - <http://www.tldp.org/docs.html#guide>, on its man page: "man - nfs", and in the NFS-HOWTO. - - A superior but less widely used alternative to NFS is provided by - the Coda file system; see "Coda file system support" below. + Choose Y here if you want to access files residing on other + computers using Sun's Network File System protocol. To compile + this file system support as a module, choose M here: the module + will be called nfs. - If you say Y here, you should have said Y to TCP/IP networking also. - This option would enlarge your kernel by about 27 KB. + To mount file systems exported by NFS servers, you also need to + install the user space mount.nfs command which can be found in + the Linux nfs-utils package, available from http://linux-nfs.org/. + Information about using the mount command is available in the + mount(8) man page. More detail about the Linux NFS client + implementation is available via the nfs(5) man page. - To compile this file system support as a module, choose M here: the - module will be called nfs. + Below you can choose which versions of the NFS protocol are + available in the kernel to mount NFS servers. Support for NFS + version 2 (RFC 1094) is always available when NFS_FS is selected. - If you are configuring a diskless machine which will mount its root - file system over NFS at boot time, say Y here and to "Kernel - level IP autoconfiguration" above and to "Root file system on NFS" - below. You cannot compile this driver as a module in this case. - There are two packages designed for booting diskless machines over - the net: netboot, available from - <http://ftp1.sourceforge.net/netboot/>, and Etherboot, - available from <http://ftp1.sourceforge.net/etherboot/>. + To configure a system which mounts its root file system via NFS + at boot time, say Y here, select "Kernel level IP + autoconfiguration" in the NETWORK menu, and select "Root file + system on NFS" below. You cannot compile this file system as a + module in this case. - If you don't know what all this is about, say N. + If unsure, say N. config NFS_V3 - bool "Provide NFSv3 client support" + bool "NFS client support for NFS version 3" depends on NFS_FS help - Say Y here if you want your NFS client to be able to speak version - 3 of the NFS protocol. + This option enables support for version 3 of the NFS protocol + (RFC 1813) in the kernel's NFS client. If unsure, say Y. config NFS_V3_ACL - bool "Provide client support for the NFSv3 ACL protocol extension" + bool "NFS client support for the NFSv3 ACL protocol extension" depends on NFS_V3 help - Implement the NFSv3 ACL protocol extension for manipulating POSIX - Access Control Lists. The server should also be compiled with - the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option. + Some NFS servers support an auxiliary NFSv3 ACL protocol that + Sun added to Solaris but never became an official part of the + NFS version 3 protocol. This protocol extension allows + applications on NFS clients to manipulate POSIX Access Control + Lists on files residing on NFS servers. NFS servers enforce + ACLs on local files whether this protocol is available or not. + + Choose Y here if your NFS server supports the Solaris NFSv3 ACL + protocol extension and you want your NFS client to allow + applications to access and modify ACLs on files on the server. + + Most NFS servers don't support the Solaris NFSv3 ACL protocol + extension. You can choose N here or specify the "noacl" mount + option to prevent your NFS client from trying to use the NFSv3 + ACL protocol. If unsure, say N. config NFS_V4 - bool "Provide NFSv4 client support (EXPERIMENTAL)" + bool "NFS client support for NFS version 4 (EXPERIMENTAL)" depends on NFS_FS && EXPERIMENTAL select RPCSEC_GSS_KRB5 help - Say Y here if you want your NFS client to be able to speak the newer - version 4 of the NFS protocol. + This option enables support for version 4 of the NFS protocol + (RFC 3530) in the kernel's NFS client. - Note: Requires auxiliary userspace daemons which may be found on - http://www.citi.umich.edu/projects/nfsv4/ + To mount NFS servers using NFSv4, you also need to install user + space programs which can be found in the Linux nfs-utils package, + available from http://linux-nfs.org/. If unsure, say N. +config ROOT_NFS + bool "Root file system on NFS" + depends on NFS_FS=y && IP_PNP + help + If you want your system to mount its root file system via NFS, + choose Y here. This is common practice for managing systems + without local permanent storage. For details, read + <file:Documentation/filesystems/nfsroot.txt>. + + Most people say N here. + config NFSD tristate "NFS server support" depends on INET @@ -1746,20 +1759,6 @@ config NFSD_V4 If unsure, say N. -config ROOT_NFS - bool "Root file system on NFS" - depends on NFS_FS=y && IP_PNP - help - If you want your Linux box to mount its whole root file system (the - one containing the directory /) from some other computer over the - net via NFS (presumably because your box doesn't have a hard disk), - say Y. Read <file:Documentation/filesystems/nfsroot.txt> for - details. It is likely that in this case, you also want to say Y to - "Kernel level IP autoconfiguration" so that your box can discover - its network address at boot time. - - Most people say N here. - config LOCKD tristate @@ -1800,27 +1799,6 @@ config SUNRPC_XPRT_RDMA If unsure, say N. -config SUNRPC_BIND34 - bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)" - depends on SUNRPC && EXPERIMENTAL - default n - help - RPC requests over IPv6 networks require support for larger - addresses when performing an RPC bind. Sun added support for - IPv6 addressing by creating two new versions of the rpcbind - protocol (RFC 1833). - - This option enables support in the kernel RPC client for - querying rpcbind servers via versions 3 and 4 of the rpcbind - protocol. The kernel automatically falls back to version 2 - if a remote rpcbind service does not support versions 3 or 4. - By themselves, these new versions do not provide support for - RPC over IPv6, but the new protocol versions are necessary to - support it. - - If unsure, say N to get traditional behavior (version 2 rpcbind - requests only). - config RPCSEC_GSS_KRB5 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)" depends on SUNRPC && EXPERIMENTAL diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c index 5df517b81f3f..fd7d4669776e 100644 --- a/fs/lockd/clntproc.c +++ b/fs/lockd/clntproc.c @@ -430,7 +430,7 @@ nlmclnt_test(struct nlm_rqst *req, struct file_lock *fl) * Report the conflicting lock back to the application. */ fl->fl_start = req->a_res.lock.fl.fl_start; - fl->fl_end = req->a_res.lock.fl.fl_start; + fl->fl_end = req->a_res.lock.fl.fl_end; fl->fl_type = req->a_res.lock.fl.fl_type; fl->fl_pid = 0; break; diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index c1e7c8300629..f447f4b4476c 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -27,7 +27,7 @@ struct nfs_callback_data { unsigned int users; - struct svc_serv *serv; + struct svc_rqst *rqst; struct task_struct *task; }; @@ -91,21 +91,17 @@ nfs_callback_svc(void *vrqstp) svc_process(rqstp); } unlock_kernel(); - nfs_callback_info.task = NULL; - svc_exit_thread(rqstp); return 0; } /* - * Bring up the server process if it is not already up. + * Bring up the callback thread if it is not already up. */ int nfs_callback_up(void) { struct svc_serv *serv = NULL; - struct svc_rqst *rqstp; int ret = 0; - lock_kernel(); mutex_lock(&nfs_callback_mutex); if (nfs_callback_info.users++ || nfs_callback_info.task != NULL) goto out; @@ -121,22 +117,23 @@ int nfs_callback_up(void) nfs_callback_tcpport = ret; dprintk("Callback port = 0x%x\n", nfs_callback_tcpport); - rqstp = svc_prepare_thread(serv, &serv->sv_pools[0]); - if (IS_ERR(rqstp)) { - ret = PTR_ERR(rqstp); + nfs_callback_info.rqst = svc_prepare_thread(serv, &serv->sv_pools[0]); + if (IS_ERR(nfs_callback_info.rqst)) { + ret = PTR_ERR(nfs_callback_info.rqst); + nfs_callback_info.rqst = NULL; goto out_err; } svc_sock_update_bufs(serv); - nfs_callback_info.serv = serv; - nfs_callback_info.task = kthread_run(nfs_callback_svc, rqstp, + nfs_callback_info.task = kthread_run(nfs_callback_svc, + nfs_callback_info.rqst, "nfsv4-svc"); if (IS_ERR(nfs_callback_info.task)) { ret = PTR_ERR(nfs_callback_info.task); - nfs_callback_info.serv = NULL; + svc_exit_thread(nfs_callback_info.rqst); + nfs_callback_info.rqst = NULL; nfs_callback_info.task = NULL; - svc_exit_thread(rqstp); goto out_err; } out: @@ -149,7 +146,6 @@ out: if (serv) svc_destroy(serv); mutex_unlock(&nfs_callback_mutex); - unlock_kernel(); return ret; out_err: dprintk("Couldn't create callback socket or server thread; err = %d\n", @@ -159,17 +155,19 @@ out_err: } /* - * Kill the server process if it is not already down. + * Kill the callback thread if it's no longer being used. */ void nfs_callback_down(void) { - lock_kernel(); mutex_lock(&nfs_callback_mutex); nfs_callback_info.users--; - if (nfs_callback_info.users == 0 && nfs_callback_info.task != NULL) + if (nfs_callback_info.users == 0 && nfs_callback_info.task != NULL) { kthread_stop(nfs_callback_info.task); + svc_exit_thread(nfs_callback_info.rqst); + nfs_callback_info.rqst = NULL; + nfs_callback_info.task = NULL; + } mutex_unlock(&nfs_callback_mutex); - unlock_kernel(); } static int nfs_callback_authenticate(struct svc_rqst *rqstp) diff --git a/fs/nfs/client.c b/fs/nfs/client.c index f2a092ca69b5..5ee23e7058b3 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -431,14 +431,14 @@ static void nfs_init_timeout_values(struct rpc_timeout *to, int proto, { to->to_initval = timeo * HZ / 10; to->to_retries = retrans; - if (!to->to_retries) - to->to_retries = 2; switch (proto) { case XPRT_TRANSPORT_TCP: case XPRT_TRANSPORT_RDMA: + if (to->to_retries == 0) + to->to_retries = NFS_DEF_TCP_RETRANS; if (to->to_initval == 0) - to->to_initval = 60 * HZ; + to->to_initval = NFS_DEF_TCP_TIMEO * HZ / 10; if (to->to_initval > NFS_MAX_TCP_TIMEOUT) to->to_initval = NFS_MAX_TCP_TIMEOUT; to->to_increment = to->to_initval; @@ -450,14 +450,17 @@ static void nfs_init_timeout_values(struct rpc_timeout *to, int proto, to->to_exponential = 0; break; case XPRT_TRANSPORT_UDP: - default: + if (to->to_retries == 0) + to->to_retries = NFS_DEF_UDP_RETRANS; if (!to->to_initval) - to->to_initval = 11 * HZ / 10; + to->to_initval = NFS_DEF_UDP_TIMEO * HZ / 10; if (to->to_initval > NFS_MAX_UDP_TIMEOUT) to->to_initval = NFS_MAX_UDP_TIMEOUT; to->to_maxval = NFS_MAX_UDP_TIMEOUT; to->to_exponential = 1; break; + default: + BUG(); } } diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 982a2064fe4c..b1940660502f 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -133,8 +133,11 @@ nfs_opendir(struct inode *inode, struct file *filp) { int res; - dfprintk(VFS, "NFS: opendir(%s/%ld)\n", - inode->i_sb->s_id, inode->i_ino); + dfprintk(FILE, "NFS: open dir(%s/%s)\n", + filp->f_path.dentry->d_parent->d_name.name, + filp->f_path.dentry->d_name.name); + + nfs_inc_stats(inode, NFSIOS_VFSOPEN); lock_kernel(); /* Call generic open code in order to cache credentials */ @@ -528,7 +531,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir) struct nfs_fattr fattr; long res; - dfprintk(VFS, "NFS: readdir(%s/%s) starting at cookie %Lu\n", + dfprintk(FILE, "NFS: readdir(%s/%s) starting at cookie %llu\n", dentry->d_parent->d_name.name, dentry->d_name.name, (long long)filp->f_pos); nfs_inc_stats(inode, NFSIOS_VFSGETDENTS); @@ -595,7 +598,7 @@ out: unlock_kernel(); if (res > 0) res = 0; - dfprintk(VFS, "NFS: readdir(%s/%s) returns %ld\n", + dfprintk(FILE, "NFS: readdir(%s/%s) returns %ld\n", dentry->d_parent->d_name.name, dentry->d_name.name, res); return res; @@ -603,7 +606,15 @@ out: static loff_t nfs_llseek_dir(struct file *filp, loff_t offset, int origin) { - mutex_lock(&filp->f_path.dentry->d_inode->i_mutex); + struct dentry *dentry = filp->f_path.dentry; + struct inode *inode = dentry->d_inode; + + dfprintk(FILE, "NFS: llseek dir(%s/%s, %lld, %d)\n", + dentry->d_parent->d_name.name, + dentry->d_name.name, + offset, origin); + + mutex_lock(&inode->i_mutex); switch (origin) { case 1: offset += filp->f_pos; @@ -619,7 +630,7 @@ static loff_t nfs_llseek_dir(struct file *filp, loff_t offset, int origin) nfs_file_open_context(filp)->dir_cookie = 0; } out: - mutex_unlock(&filp->f_path.dentry->d_inode->i_mutex); + mutex_unlock(&inode->i_mutex); return offset; } @@ -629,10 +640,11 @@ out: */ static int nfs_fsync_dir(struct file *filp, struct dentry *dentry, int datasync) { - dfprintk(VFS, "NFS: fsync_dir(%s/%s) datasync %d\n", + dfprintk(FILE, "NFS: fsync dir(%s/%s) datasync %d\n", dentry->d_parent->d_name.name, dentry->d_name.name, datasync); + nfs_inc_stats(dentry->d_inode, NFSIOS_VFSFSYNC); return 0; } diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 4757a2b326a1..08f6b040d289 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -890,7 +890,7 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, const struct iovec *iov, count = iov_length(iov, nr_segs); nfs_add_stats(mapping->host, NFSIOS_DIRECTREADBYTES, count); - dprintk("nfs: direct read(%s/%s, %zd@%Ld)\n", + dfprintk(FILE, "NFS: direct read(%s/%s, %zd@%Ld)\n", file->f_path.dentry->d_parent->d_name.name, file->f_path.dentry->d_name.name, count, (long long) pos); @@ -947,7 +947,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, const struct iovec *iov, count = iov_length(iov, nr_segs); nfs_add_stats(mapping->host, NFSIOS_DIRECTWRITTENBYTES, count); - dfprintk(VFS, "nfs: direct write(%s/%s, %zd@%Ld)\n", + dfprintk(FILE, "NFS: direct write(%s/%s, %zd@%Ld)\n", file->f_path.dentry->d_parent->d_name.name, file->f_path.dentry->d_name.name, count, (long long) pos); diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 4e98a56a1777..43164fe86069 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -50,7 +50,7 @@ static ssize_t nfs_file_read(struct kiocb *, const struct iovec *iov, static ssize_t nfs_file_write(struct kiocb *, const struct iovec *iov, unsigned long nr_segs, loff_t pos); static int nfs_file_flush(struct file *, fl_owner_t id); -static int nfs_fsync(struct file *, struct dentry *dentry, int datasync); +static int nfs_file_fsync(struct file *, struct dentry *dentry, int datasync); static int nfs_check_flags(int flags); static int nfs_lock(struct file *filp, int cmd, struct file_lock *fl); static int nfs_flock(struct file *filp, int cmd, struct file_lock *fl); @@ -72,7 +72,7 @@ const struct file_operations nfs_file_operations = { .open = nfs_file_open, .flush = nfs_file_flush, .release = nfs_file_release, - .fsync = nfs_fsync, + .fsync = nfs_file_fsync, .lock = nfs_lock, .flock = nfs_flock, .splice_read = nfs_file_splice_read, @@ -119,13 +119,17 @@ nfs_file_open(struct inode *inode, struct file *filp) { int res; + dprintk("NFS: open file(%s/%s)\n", + filp->f_path.dentry->d_parent->d_name.name, + filp->f_path.dentry->d_name.name); + res = nfs_check_flags(filp->f_flags); if (res) return res; nfs_inc_stats(inode, NFSIOS_VFSOPEN); lock_kernel(); - res = NFS_PROTO(inode)->file_open(inode, filp); + res = nfs_open(inode, filp); unlock_kernel(); return res; } @@ -133,11 +137,17 @@ nfs_file_open(struct inode *inode, struct file *filp) static int nfs_file_release(struct inode *inode, struct file *filp) { + struct dentry *dentry = filp->f_path.dentry; + + dprintk("NFS: release(%s/%s)\n", + dentry->d_parent->d_name.name, + dentry->d_name.name); + /* Ensure that dirty pages are flushed out with the right creds */ if (filp->f_mode & FMODE_WRITE) - nfs_wb_all(filp->f_path.dentry->d_inode); + nfs_wb_all(dentry->d_inode); nfs_inc_stats(inode, NFSIOS_VFSRELEASE); - return NFS_PROTO(inode)->file_release(inode, filp); + return nfs_release(inode, filp); } /** @@ -171,6 +181,12 @@ force_reval: static loff_t nfs_file_llseek(struct file *filp, loff_t offset, int origin) { loff_t loff; + + dprintk("NFS: llseek file(%s/%s, %lld, %d)\n", + filp->f_path.dentry->d_parent->d_name.name, + filp->f_path.dentry->d_name.name, + offset, origin); + /* origin == SEEK_END => we must revalidate the cached file length */ if (origin == SEEK_END) { struct inode *inode = filp->f_mapping->host; @@ -185,7 +201,7 @@ static loff_t nfs_file_llseek(struct file *filp, loff_t offset, int origin) } /* - * Helper for nfs_file_flush() and nfs_fsync() + * Helper for nfs_file_flush() and nfs_file_fsync() * * Notice that it clears the NFS_CONTEXT_ERROR_WRITE before synching to * disk, but it retrieves and clears ctx->error after synching, despite @@ -211,16 +227,18 @@ static int nfs_do_fsync(struct nfs_open_context *ctx, struct inode *inode) /* * Flush all dirty pages, and check for write errors. - * */ static int nfs_file_flush(struct file *file, fl_owner_t id) { struct nfs_open_context *ctx = nfs_file_open_context(file); - struct inode *inode = file->f_path.dentry->d_inode; + struct dentry *dentry = file->f_path.dentry; + struct inode *inode = dentry->d_inode; int status; - dfprintk(VFS, "nfs: flush(%s/%ld)\n", inode->i_sb->s_id, inode->i_ino); + dprintk("NFS: flush(%s/%s)\n", + dentry->d_parent->d_name.name, + dentry->d_name.name); if ((file->f_mode & FMODE_WRITE) == 0) return 0; @@ -245,7 +263,7 @@ nfs_file_read(struct kiocb *iocb, const struct iovec *iov, if (iocb->ki_filp->f_flags & O_DIRECT) return nfs_file_direct_read(iocb, iov, nr_segs, pos); - dfprintk(VFS, "nfs: read(%s/%s, %lu@%lu)\n", + dprintk("NFS: read(%s/%s, %lu@%lu)\n", dentry->d_parent->d_name.name, dentry->d_name.name, (unsigned long) count, (unsigned long) pos); @@ -265,7 +283,7 @@ nfs_file_splice_read(struct file *filp, loff_t *ppos, struct inode *inode = dentry->d_inode; ssize_t res; - dfprintk(VFS, "nfs: splice_read(%s/%s, %lu@%Lu)\n", + dprintk("NFS: splice_read(%s/%s, %lu@%Lu)\n", dentry->d_parent->d_name.name, dentry->d_name.name, (unsigned long) count, (unsigned long long) *ppos); @@ -282,7 +300,7 @@ nfs_file_mmap(struct file * file, struct vm_area_struct * vma) struct inode *inode = dentry->d_inode; int status; - dfprintk(VFS, "nfs: mmap(%s/%s)\n", + dprintk("NFS: mmap(%s/%s)\n", dentry->d_parent->d_name.name, dentry->d_name.name); status = nfs_revalidate_mapping(inode, file->f_mapping); @@ -300,12 +318,14 @@ nfs_file_mmap(struct file * file, struct vm_area_struct * vma) * whether any write errors occurred for this process. */ static int -nfs_fsync(struct file *file, struct dentry *dentry, int datasync) +nfs_file_fsync(struct file *file, struct dentry *dentry, int datasync) { struct nfs_open_context *ctx = nfs_file_open_context(file); struct inode *inode = dentry->d_inode; - dfprintk(VFS, "nfs: fsync(%s/%ld)\n", inode->i_sb->s_id, inode->i_ino); + dprintk("NFS: fsync file(%s/%s) datasync %d\n", + dentry->d_parent->d_name.name, dentry->d_name.name, + datasync); nfs_inc_stats(inode, NFSIOS_VFSFSYNC); return nfs_do_fsync(ctx, inode); @@ -328,6 +348,11 @@ static int nfs_write_begin(struct file *file, struct address_space *mapping, struct page *page; index = pos >> PAGE_CACHE_SHIFT; + dfprintk(PAGECACHE, "NFS: write_begin(%s/%s(%ld), %u@%lld)\n", + file->f_path.dentry->d_parent->d_name.name, + file->f_path.dentry->d_name.name, + mapping->host->i_ino, len, (long long) pos); + page = __grab_cache_page(mapping, index); if (!page) return -ENOMEM; @@ -348,6 +373,31 @@ static int nfs_write_end(struct file *file, struct address_space *mapping, unsigned offset = pos & (PAGE_CACHE_SIZE - 1); int status; + dfprintk(PAGECACHE, "NFS: write_end(%s/%s(%ld), %u@%lld)\n", + file->f_path.dentry->d_parent->d_name.name, + file->f_path.dentry->d_name.name, + mapping->host->i_ino, len, (long long) pos); + + /* + * Zero any uninitialised parts of the page, and then mark the page + * as up to date if it turns out that we're extending the file. + */ + if (!PageUptodate(page)) { + unsigned pglen = nfs_page_length(page); + unsigned end = offset + len; + + if (pglen == 0) { + zero_user_segments(page, 0, offset, + end, PAGE_CACHE_SIZE); + SetPageUptodate(page); + } else if (end >= pglen) { + zero_user_segment(page, end, PAGE_CACHE_SIZE); + if (offset == 0) + SetPageUptodate(page); + } else + zero_user_segment(page, pglen, PAGE_CACHE_SIZE); + } + lock_kernel(); status = nfs_updatepage(file, page, offset, copied); unlock_kernel(); @@ -362,6 +412,8 @@ static int nfs_write_end(struct file *file, struct address_space *mapping, static void nfs_invalidate_page(struct page *page, unsigned long offset) { + dfprintk(PAGECACHE, "NFS: invalidate_page(%p, %lu)\n", page, offset); + if (offset != 0) return; /* Cancel any unstarted writes on this page */ @@ -370,13 +422,20 @@ static void nfs_invalidate_page(struct page *page, unsigned long offset) static int nfs_release_page(struct page *page, gfp_t gfp) { + dfprintk(PAGECACHE, "NFS: release_page(%p)\n", page); + /* If PagePrivate() is set, then the page is not freeable */ return 0; } static int nfs_launder_page(struct page *page) { - return nfs_wb_page(page->mapping->host, page); + struct inode *inode = page->mapping->host; + + dfprintk(PAGECACHE, "NFS: launder_page(%ld, %llu)\n", + inode->i_ino, (long long)page_offset(page)); + + return nfs_wb_page(inode, page); } const struct address_space_operations nfs_file_aops = { @@ -396,13 +455,19 @@ const struct address_space_operations nfs_file_aops = { static int nfs_vm_page_mkwrite(struct vm_area_struct *vma, struct page *page) { struct file *filp = vma->vm_file; + struct dentry *dentry = filp->f_path.dentry; unsigned pagelen; int ret = -EINVAL; struct address_space *mapping; + dfprintk(PAGECACHE, "NFS: vm_page_mkwrite(%s/%s(%ld), offset %lld)\n", + dentry->d_parent->d_name.name, dentry->d_name.name, + filp->f_mapping->host->i_ino, + (long long)page_offset(page)); + lock_page(page); mapping = page->mapping; - if (mapping != vma->vm_file->f_path.dentry->d_inode->i_mapping) + if (mapping != dentry->d_inode->i_mapping) goto out_unlock; ret = 0; @@ -450,9 +515,9 @@ static ssize_t nfs_file_write(struct kiocb *iocb, const struct iovec *iov, if (iocb->ki_filp->f_flags & O_DIRECT) return nfs_file_direct_write(iocb, iov, nr_segs, pos); - dfprintk(VFS, "nfs: write(%s/%s(%ld), %lu@%Ld)\n", + dprintk("NFS: write(%s/%s, %lu@%Ld)\n", dentry->d_parent->d_name.name, dentry->d_name.name, - inode->i_ino, (unsigned long) count, (long long) pos); + (unsigned long) count, (long long) pos); result = -EBUSY; if (IS_SWAPFILE(inode)) @@ -586,7 +651,8 @@ static int do_setlk(struct file *filp, int cmd, struct file_lock *fl) * This makes locking act as a cache coherency point. */ nfs_sync_mapping(filp->f_mapping); - nfs_zap_caches(inode); + if (!nfs_have_delegation(inode, FMODE_READ)) + nfs_zap_caches(inode); out: return status; } @@ -596,23 +662,35 @@ out: */ static int nfs_lock(struct file *filp, int cmd, struct file_lock *fl) { - struct inode * inode = filp->f_mapping->host; + struct inode *inode = filp->f_mapping->host; + int ret = -ENOLCK; - dprintk("NFS: nfs_lock(f=%s/%ld, t=%x, fl=%x, r=%Ld:%Ld)\n", - inode->i_sb->s_id, inode->i_ino, + dprintk("NFS: lock(%s/%s, t=%x, fl=%x, r=%lld:%lld)\n", + filp->f_path.dentry->d_parent->d_name.name, + filp->f_path.dentry->d_name.name, fl->fl_type, fl->fl_flags, (long long)fl->fl_start, (long long)fl->fl_end); + nfs_inc_stats(inode, NFSIOS_VFSLOCK); /* No mandatory locks over NFS */ if (__mandatory_lock(inode) && fl->fl_type != F_UNLCK) - return -ENOLCK; + goto out_err; + + if (NFS_PROTO(inode)->lock_check_bounds != NULL) { + ret = NFS_PROTO(inode)->lock_check_bounds(fl); + if (ret < 0) + goto out_err; + } if (IS_GETLK(cmd)) - return do_getlk(filp, cmd, fl); - if (fl->fl_type == F_UNLCK) - return do_unlk(filp, cmd, fl); - return do_setlk(filp, cmd, fl); + ret = do_getlk(filp, cmd, fl); + else if (fl->fl_type == F_UNLCK) + ret = do_unlk(filp, cmd, fl); + else + ret = do_setlk(filp, cmd, fl); +out_err: + return ret; } /* @@ -620,9 +698,9 @@ static int nfs_lock(struct file *filp, int cmd, struct file_lock *fl) */ static int nfs_flock(struct file *filp, int cmd, struct file_lock *fl) { - dprintk("NFS: nfs_flock(f=%s/%ld, t=%x, fl=%x)\n", - filp->f_path.dentry->d_inode->i_sb->s_id, - filp->f_path.dentry->d_inode->i_ino, + dprintk("NFS: flock(%s/%s, t=%x, fl=%x)\n", + filp->f_path.dentry->d_parent->d_name.name, + filp->f_path.dentry->d_name.name, fl->fl_type, fl->fl_flags); /* @@ -645,12 +723,15 @@ static int nfs_flock(struct file *filp, int cmd, struct file_lock *fl) return do_setlk(filp, cmd, fl); } +/* + * There is no protocol support for leases, so we have no way to implement + * them correctly in the face of opens by other clients. + */ static int nfs_setlease(struct file *file, long arg, struct file_lock **fl) { - /* - * There is no protocol support for leases, so we have no way - * to implement them correctly in the face of opens by other - * clients. - */ + dprintk("NFS: setlease(%s/%s, arg=%ld)\n", + file->f_path.dentry->d_parent->d_name.name, + file->f_path.dentry->d_name.name, arg); + return -EINVAL; } diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 596c5d8e86f4..2c23d067e2a6 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -57,8 +57,6 @@ static int enable_ino64 = NFS_64_BIT_INODE_NUMBERS_ENABLED; static void nfs_invalidate_inode(struct inode *); static int nfs_update_inode(struct inode *, struct nfs_fattr *); -static void nfs_zap_acl_cache(struct inode *); - static struct kmem_cache * nfs_inode_cachep; static inline unsigned long @@ -167,7 +165,7 @@ void nfs_zap_mapping(struct inode *inode, struct address_space *mapping) } } -static void nfs_zap_acl_cache(struct inode *inode) +void nfs_zap_acl_cache(struct inode *inode) { void (*clear_acl_cache)(struct inode *); @@ -347,7 +345,7 @@ out_no_inode: goto out; } -#define NFS_VALID_ATTRS (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_ATIME|ATTR_ATIME_SET|ATTR_MTIME|ATTR_MTIME_SET) +#define NFS_VALID_ATTRS (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_ATIME|ATTR_ATIME_SET|ATTR_MTIME|ATTR_MTIME_SET|ATTR_FILE) int nfs_setattr(struct dentry *dentry, struct iattr *attr) @@ -369,7 +367,7 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr) /* Optimization: if the end result is no change, don't RPC */ attr->ia_valid &= NFS_VALID_ATTRS; - if (attr->ia_valid == 0) + if ((attr->ia_valid & ~ATTR_FILE) == 0) return 0; lock_kernel(); diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 04ae867dddba..24241fcbb98d 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -150,6 +150,7 @@ extern void nfs_clear_inode(struct inode *); #ifdef CONFIG_NFS_V4 extern void nfs4_clear_inode(struct inode *); #endif +void nfs_zap_acl_cache(struct inode *inode); /* super.c */ extern struct file_system_type nfs_xdev_fs_type; diff --git a/fs/nfs/iostat.h b/fs/nfs/iostat.h index 6350ecbde589..a36952810032 100644 --- a/fs/nfs/iostat.h +++ b/fs/nfs/iostat.h @@ -5,135 +5,41 @@ * * Copyright (C) 2005, 2006 Chuck Lever <cel@netapp.com> * - * NFS client per-mount statistics provide information about the health of - * the NFS client and the health of each NFS mount point. Generally these - * are not for detailed problem diagnosis, but simply to indicate that there - * is a problem. - * - * These counters are not meant to be human-readable, but are meant to be - * integrated into system monitoring tools such as "sar" and "iostat". As - * such, the counters are sampled by the tools over time, and are never - * zeroed after a file system is mounted. Moving averages can be computed - * by the tools by taking the difference between two instantaneous samples - * and dividing that by the time between the samples. */ #ifndef _NFS_IOSTAT #define _NFS_IOSTAT -#define NFS_IOSTAT_VERS "1.0" - -/* - * NFS byte counters - * - * 1. SERVER - the number of payload bytes read from or written to the - * server by the NFS client via an NFS READ or WRITE request. - * - * 2. NORMAL - the number of bytes read or written by applications via - * the read(2) and write(2) system call interfaces. - * - * 3. DIRECT - the number of bytes read or written from files opened - * with the O_DIRECT flag. - * - * These counters give a view of the data throughput into and out of the NFS - * client. Comparing the number of bytes requested by an application with the - * number of bytes the client requests from the server can provide an - * indication of client efficiency (per-op, cache hits, etc). - * - * These counters can also help characterize which access methods are in - * use. DIRECT by itself shows whether there is any O_DIRECT traffic. - * NORMAL + DIRECT shows how much data is going through the system call - * interface. A large amount of SERVER traffic without much NORMAL or - * DIRECT traffic shows that applications are using mapped files. - * - * NFS page counters - * - * These count the number of pages read or written via nfs_readpage(), - * nfs_readpages(), or their write equivalents. - */ -enum nfs_stat_bytecounters { - NFSIOS_NORMALREADBYTES = 0, - NFSIOS_NORMALWRITTENBYTES, - NFSIOS_DIRECTREADBYTES, - NFSIOS_DIRECTWRITTENBYTES, - NFSIOS_SERVERREADBYTES, - NFSIOS_SERVERWRITTENBYTES, - NFSIOS_READPAGES, - NFSIOS_WRITEPAGES, - __NFSIOS_BYTESMAX, -}; - -/* - * NFS event counters - * - * These counters provide a low-overhead way of monitoring client activity - * without enabling NFS trace debugging. The counters show the rate at - * which VFS requests are made, and how often the client invalidates its - * data and attribute caches. This allows system administrators to monitor - * such things as how close-to-open is working, and answer questions such - * as "why are there so many GETATTR requests on the wire?" - * - * They also count anamolous events such as short reads and writes, silly - * renames due to close-after-delete, and operations that change the size - * of a file (such operations can often be the source of data corruption - * if applications aren't using file locking properly). - */ -enum nfs_stat_eventcounters { - NFSIOS_INODEREVALIDATE = 0, - NFSIOS_DENTRYREVALIDATE, - NFSIOS_DATAINVALIDATE, - NFSIOS_ATTRINVALIDATE, - NFSIOS_VFSOPEN, - NFSIOS_VFSLOOKUP, - NFSIOS_VFSACCESS, - NFSIOS_VFSUPDATEPAGE, - NFSIOS_VFSREADPAGE, - NFSIOS_VFSREADPAGES, - NFSIOS_VFSWRITEPAGE, - NFSIOS_VFSWRITEPAGES, - NFSIOS_VFSGETDENTS, - NFSIOS_VFSSETATTR, - NFSIOS_VFSFLUSH, - NFSIOS_VFSFSYNC, - NFSIOS_VFSLOCK, - NFSIOS_VFSRELEASE, - NFSIOS_CONGESTIONWAIT, - NFSIOS_SETATTRTRUNC, - NFSIOS_EXTENDWRITE, - NFSIOS_SILLYRENAME, - NFSIOS_SHORTREAD, - NFSIOS_SHORTWRITE, - NFSIOS_DELAY, - __NFSIOS_COUNTSMAX, -}; - -#ifdef __KERNEL__ - #include <linux/percpu.h> #include <linux/cache.h> +#include <linux/nfs_iostat.h> struct nfs_iostats { unsigned long long bytes[__NFSIOS_BYTESMAX]; unsigned long events[__NFSIOS_COUNTSMAX]; } ____cacheline_aligned; -static inline void nfs_inc_server_stats(struct nfs_server *server, enum nfs_stat_eventcounters stat) +static inline void nfs_inc_server_stats(const struct nfs_server *server, + enum nfs_stat_eventcounters stat) { struct nfs_iostats *iostats; int cpu; cpu = get_cpu(); iostats = per_cpu_ptr(server->io_stats, cpu); - iostats->events[stat] ++; + iostats->events[stat]++; put_cpu_no_resched(); } -static inline void nfs_inc_stats(struct inode *inode, enum nfs_stat_eventcounters stat) +static inline void nfs_inc_stats(const struct inode *inode, + enum nfs_stat_eventcounters stat) { nfs_inc_server_stats(NFS_SERVER(inode), stat); } -static inline void nfs_add_server_stats(struct nfs_server *server, enum nfs_stat_bytecounters stat, unsigned long addend) +static inline void nfs_add_server_stats(const struct nfs_server *server, + enum nfs_stat_bytecounters stat, + unsigned long addend) { struct nfs_iostats *iostats; int cpu; @@ -144,7 +50,9 @@ static inline void nfs_add_server_stats(struct nfs_server *server, enum nfs_stat put_cpu_no_resched(); } -static inline void nfs_add_stats(struct inode *inode, enum nfs_stat_bytecounters stat, unsigned long addend) +static inline void nfs_add_stats(const struct inode *inode, + enum nfs_stat_bytecounters stat, + unsigned long addend) { nfs_add_server_stats(NFS_SERVER(inode), stat, addend); } @@ -160,5 +68,4 @@ static inline void nfs_free_iostats(struct nfs_iostats *stats) free_percpu(stats); } -#endif -#endif +#endif /* _NFS_IOSTAT */ diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c index 9b7362565c0c..423842f51ac9 100644 --- a/fs/nfs/nfs3acl.c +++ b/fs/nfs/nfs3acl.c @@ -5,6 +5,8 @@ #include <linux/posix_acl_xattr.h> #include <linux/nfsacl.h> +#include "internal.h" + #define NFSDBG_FACILITY NFSDBG_PROC ssize_t nfs3_listxattr(struct dentry *dentry, char *buffer, size_t size) @@ -205,6 +207,8 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type) status = nfs_revalidate_inode(server, inode); if (status < 0) return ERR_PTR(status); + if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) + nfs_zap_acl_cache(inode); acl = nfs3_get_cached_acl(inode, type); if (acl != ERR_PTR(-EAGAIN)) return acl; @@ -319,9 +323,8 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, dprintk("NFS call setacl\n"); msg.rpc_proc = &server->client_acl->cl_procinfo[ACLPROC3_SETACL]; status = rpc_call_sync(server->client_acl, &msg, 0); - spin_lock(&inode->i_lock); - NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ACCESS; - spin_unlock(&inode->i_lock); + nfs_access_zap_cache(inode); + nfs_zap_acl_cache(inode); dprintk("NFS reply setacl: %d\n", status); /* pages may have been allocated at the xdr layer. */ diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index c3523ad03ed1..1e750e4574a9 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -129,6 +129,8 @@ nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, int status; dprintk("NFS call setattr\n"); + if (sattr->ia_valid & ATTR_FILE) + msg.rpc_cred = nfs_file_cred(sattr->ia_file); nfs_fattr_init(fattr); status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); if (status == 0) @@ -248,6 +250,53 @@ static int nfs3_proc_readlink(struct inode *inode, struct page *page, return status; } +struct nfs3_createdata { + struct rpc_message msg; + union { + struct nfs3_createargs create; + struct nfs3_mkdirargs mkdir; + struct nfs3_symlinkargs symlink; + struct nfs3_mknodargs mknod; + } arg; + struct nfs3_diropres res; + struct nfs_fh fh; + struct nfs_fattr fattr; + struct nfs_fattr dir_attr; +}; + +static struct nfs3_createdata *nfs3_alloc_createdata(void) +{ + struct nfs3_createdata *data; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (data != NULL) { + data->msg.rpc_argp = &data->arg; + data->msg.rpc_resp = &data->res; + data->res.fh = &data->fh; + data->res.fattr = &data->fattr; + data->res.dir_attr = &data->dir_attr; + nfs_fattr_init(data->res.fattr); + nfs_fattr_init(data->res.dir_attr); + } + return data; +} + +static int nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data) +{ + int status; + + status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0); + nfs_post_op_update_inode(dir, data->res.dir_attr); + if (status == 0) + status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); + return status; +} + +static void nfs3_free_createdata(struct nfs3_createdata *data) +{ + kfree(data); +} + /* * Create a regular file. * For now, we don't implement O_EXCL. @@ -256,70 +305,60 @@ static int nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, int flags, struct nameidata *nd) { - struct nfs_fh fhandle; - struct nfs_fattr fattr; - struct nfs_fattr dir_attr; - struct nfs3_createargs arg = { - .fh = NFS_FH(dir), - .name = dentry->d_name.name, - .len = dentry->d_name.len, - .sattr = sattr, - }; - struct nfs3_diropres res = { - .dir_attr = &dir_attr, - .fh = &fhandle, - .fattr = &fattr - }; - struct rpc_message msg = { - .rpc_proc = &nfs3_procedures[NFS3PROC_CREATE], - .rpc_argp = &arg, - .rpc_resp = &res, - }; + struct nfs3_createdata *data; mode_t mode = sattr->ia_mode; - int status; + int status = -ENOMEM; dprintk("NFS call create %s\n", dentry->d_name.name); - arg.createmode = NFS3_CREATE_UNCHECKED; + + data = nfs3_alloc_createdata(); + if (data == NULL) + goto out; + + data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE]; + data->arg.create.fh = NFS_FH(dir); + data->arg.create.name = dentry->d_name.name; + data->arg.create.len = dentry->d_name.len; + data->arg.create.sattr = sattr; + + data->arg.create.createmode = NFS3_CREATE_UNCHECKED; if (flags & O_EXCL) { - arg.createmode = NFS3_CREATE_EXCLUSIVE; - arg.verifier[0] = jiffies; - arg.verifier[1] = current->pid; + data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE; + data->arg.create.verifier[0] = jiffies; + data->arg.create.verifier[1] = current->pid; } sattr->ia_mode &= ~current->fs->umask; -again: - nfs_fattr_init(&dir_attr); - nfs_fattr_init(&fattr); - status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); - nfs_refresh_inode(dir, &dir_attr); + for (;;) { + status = nfs3_do_create(dir, dentry, data); - /* If the server doesn't support the exclusive creation semantics, - * try again with simple 'guarded' mode. */ - if (status == -ENOTSUPP) { - switch (arg.createmode) { + if (status != -ENOTSUPP) + break; + /* If the server doesn't support the exclusive creation + * semantics, try again with simple 'guarded' mode. */ + switch (data->arg.create.createmode) { case NFS3_CREATE_EXCLUSIVE: - arg.createmode = NFS3_CREATE_GUARDED; + data->arg.create.createmode = NFS3_CREATE_GUARDED; break; case NFS3_CREATE_GUARDED: - arg.createmode = NFS3_CREATE_UNCHECKED; + data->arg.create.createmode = NFS3_CREATE_UNCHECKED; break; case NFS3_CREATE_UNCHECKED: goto out; } - goto again; + nfs_fattr_init(data->res.dir_attr); + nfs_fattr_init(data->res.fattr); } - if (status == 0) - status = nfs_instantiate(dentry, &fhandle, &fattr); if (status != 0) goto out; /* When we created the file with exclusive semantics, make * sure we set the attributes afterwards. */ - if (arg.createmode == NFS3_CREATE_EXCLUSIVE) { + if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) { dprintk("NFS call setattr (post-create)\n"); if (!(sattr->ia_valid & ATTR_ATIME_SET)) @@ -330,14 +369,15 @@ again: /* Note: we could use a guarded setattr here, but I'm * not sure this buys us anything (and I'd have * to revamp the NFSv3 XDR code) */ - status = nfs3_proc_setattr(dentry, &fattr, sattr); - nfs_post_op_update_inode(dentry->d_inode, &fattr); + status = nfs3_proc_setattr(dentry, data->res.fattr, sattr); + nfs_post_op_update_inode(dentry->d_inode, data->res.fattr); dprintk("NFS reply setattr (post-create): %d\n", status); + if (status != 0) + goto out; } - if (status != 0) - goto out; status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); out: + nfs3_free_createdata(data); dprintk("NFS reply create: %d\n", status); return status; } @@ -452,40 +492,28 @@ static int nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, unsigned int len, struct iattr *sattr) { - struct nfs_fh fhandle; - struct nfs_fattr fattr, dir_attr; - struct nfs3_symlinkargs arg = { - .fromfh = NFS_FH(dir), - .fromname = dentry->d_name.name, - .fromlen = dentry->d_name.len, - .pages = &page, - .pathlen = 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; + struct nfs3_createdata *data; + int status = -ENOMEM; if (len > NFS3_MAXPATHLEN) return -ENAMETOOLONG; dprintk("NFS call symlink %s\n", dentry->d_name.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); - if (status != 0) + data = nfs3_alloc_createdata(); + if (data == NULL) goto out; - status = nfs_instantiate(dentry, &fhandle, &fattr); + data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK]; + data->arg.symlink.fromfh = NFS_FH(dir); + data->arg.symlink.fromname = dentry->d_name.name; + data->arg.symlink.fromlen = dentry->d_name.len; + data->arg.symlink.pages = &page; + data->arg.symlink.pathlen = len; + data->arg.symlink.sattr = sattr; + + status = nfs3_do_create(dir, dentry, data); + + nfs3_free_createdata(data); out: dprintk("NFS reply symlink: %d\n", status); return status; @@ -494,42 +522,31 @@ out: 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, - }; + struct nfs3_createdata *data; int mode = sattr->ia_mode; - int status; + int status = -ENOMEM; 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) + data = nfs3_alloc_createdata(); + if (data == NULL) goto out; - status = nfs_instantiate(dentry, &fhandle, &fattr); + + data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR]; + data->arg.mkdir.fh = NFS_FH(dir); + data->arg.mkdir.name = dentry->d_name.name; + data->arg.mkdir.len = dentry->d_name.len; + data->arg.mkdir.sattr = sattr; + + status = nfs3_do_create(dir, dentry, data); if (status != 0) goto out; + status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); out: + nfs3_free_createdata(data); dprintk("NFS reply mkdir: %d\n", status); return status; } @@ -615,52 +632,50 @@ 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, - }; + struct nfs3_createdata *data; 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; - } + int status = -ENOMEM; dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, MAJOR(rdev), MINOR(rdev)); sattr->ia_mode &= ~current->fs->umask; - 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) + data = nfs3_alloc_createdata(); + if (data == NULL) goto out; - status = nfs_instantiate(dentry, &fh, &fattr); + + data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD]; + data->arg.mknod.fh = NFS_FH(dir); + data->arg.mknod.name = dentry->d_name.name; + data->arg.mknod.len = dentry->d_name.len; + data->arg.mknod.sattr = sattr; + data->arg.mknod.rdev = rdev; + + switch (sattr->ia_mode & S_IFMT) { + case S_IFBLK: + data->arg.mknod.type = NF3BLK; + break; + case S_IFCHR: + data->arg.mknod.type = NF3CHR; + break; + case S_IFIFO: + data->arg.mknod.type = NF3FIFO; + break; + case S_IFSOCK: + data->arg.mknod.type = NF3SOCK; + break; + default: + status = -EINVAL; + goto out; + } + + status = nfs3_do_create(dir, dentry, data); if (status != 0) goto out; status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); out: + nfs3_free_createdata(data); dprintk("NFS reply mknod: %d\n", status); return status; } @@ -801,8 +816,6 @@ const struct nfs_rpc_ops nfs_v3_clientops = { .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, }; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 1293e0acd82b..4451287a81d1 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1139,8 +1139,9 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int return res; } -static int _nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, - struct iattr *sattr, struct nfs4_state *state) +static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, + struct nfs_fattr *fattr, struct iattr *sattr, + struct nfs4_state *state) { struct nfs_server *server = NFS_SERVER(inode); struct nfs_setattrargs arg = { @@ -1154,9 +1155,10 @@ static int _nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, .server = server, }; struct rpc_message msg = { - .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], - .rpc_argp = &arg, - .rpc_resp = &res, + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], + .rpc_argp = &arg, + .rpc_resp = &res, + .rpc_cred = cred, }; unsigned long timestamp = jiffies; int status; @@ -1166,7 +1168,6 @@ static int _nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { /* Use that stateid */ } else if (state != NULL) { - msg.rpc_cred = state->owner->so_cred; nfs4_copy_stateid(&arg.stateid, state, current->files); } else memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); @@ -1177,15 +1178,16 @@ static int _nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, return status; } -static int nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, - struct iattr *sattr, struct nfs4_state *state) +static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, + struct nfs_fattr *fattr, struct iattr *sattr, + struct nfs4_state *state) { struct nfs_server *server = NFS_SERVER(inode); struct nfs4_exception exception = { }; int err; do { err = nfs4_handle_exception(server, - _nfs4_do_setattr(inode, fattr, sattr, state), + _nfs4_do_setattr(inode, cred, fattr, sattr, state), &exception); } while (exception.retry); return err; @@ -1647,29 +1649,25 @@ static int nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, struct iattr *sattr) { - struct rpc_cred *cred; struct inode *inode = dentry->d_inode; - struct nfs_open_context *ctx; + struct rpc_cred *cred = NULL; struct nfs4_state *state = NULL; int status; nfs_fattr_init(fattr); - cred = rpc_lookup_cred(); - if (IS_ERR(cred)) - return PTR_ERR(cred); - /* Search for an existing open(O_WRITE) file */ - ctx = nfs_find_open_context(inode, cred, FMODE_WRITE); - if (ctx != NULL) + if (sattr->ia_valid & ATTR_FILE) { + struct nfs_open_context *ctx; + + ctx = nfs_file_open_context(sattr->ia_file); + cred = ctx->cred; state = ctx->state; + } - status = nfs4_do_setattr(inode, fattr, sattr, state); + status = nfs4_do_setattr(inode, cred, fattr, sattr, state); if (status == 0) nfs_setattr_update_inode(inode, sattr); - if (ctx != NULL) - put_nfs_open_context(ctx); - put_rpccred(cred); return status; } @@ -1897,17 +1895,16 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, goto out; } state = nfs4_do_open(dir, &path, flags, sattr, cred); - put_rpccred(cred); d_drop(dentry); if (IS_ERR(state)) { status = PTR_ERR(state); - goto out; + goto out_putcred; } d_add(dentry, igrab(state->inode)); nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); if (flags & O_EXCL) { struct nfs_fattr fattr; - status = nfs4_do_setattr(state->inode, &fattr, sattr, state); + status = nfs4_do_setattr(state->inode, cred, &fattr, sattr, state); if (status == 0) nfs_setattr_update_inode(state->inode, sattr); nfs_post_op_update_inode(state->inode, &fattr); @@ -1916,6 +1913,8 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, status = nfs4_intent_set_file(nd, &path, state); else nfs4_close_sync(&path, state, flags); +out_putcred: + put_rpccred(cred); out: return status; } @@ -2079,47 +2078,81 @@ static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *n return err; } +struct nfs4_createdata { + struct rpc_message msg; + struct nfs4_create_arg arg; + struct nfs4_create_res res; + struct nfs_fh fh; + struct nfs_fattr fattr; + struct nfs_fattr dir_fattr; +}; + +static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, + struct qstr *name, struct iattr *sattr, u32 ftype) +{ + struct nfs4_createdata *data; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (data != NULL) { + struct nfs_server *server = NFS_SERVER(dir); + + data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; + data->msg.rpc_argp = &data->arg; + data->msg.rpc_resp = &data->res; + data->arg.dir_fh = NFS_FH(dir); + data->arg.server = server; + data->arg.name = name; + data->arg.attrs = sattr; + data->arg.ftype = ftype; + data->arg.bitmask = server->attr_bitmask; + data->res.server = server; + data->res.fh = &data->fh; + data->res.fattr = &data->fattr; + data->res.dir_fattr = &data->dir_fattr; + nfs_fattr_init(data->res.fattr); + nfs_fattr_init(data->res.dir_fattr); + } + return data; +} + +static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) +{ + int status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0); + if (status == 0) { + update_changeattr(dir, &data->res.dir_cinfo); + nfs_post_op_update_inode(dir, data->res.dir_fattr); + status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); + } + return status; +} + +static void nfs4_free_createdata(struct nfs4_createdata *data) +{ + kfree(data); +} + static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, unsigned int len, struct iattr *sattr) { - struct nfs_server *server = NFS_SERVER(dir); - struct nfs_fh fhandle; - struct nfs_fattr fattr, dir_fattr; - struct nfs4_create_arg arg = { - .dir_fh = NFS_FH(dir), - .server = server, - .name = &dentry->d_name, - .attrs = sattr, - .ftype = NF4LNK, - .bitmask = server->attr_bitmask, - }; - struct nfs4_create_res res = { - .server = server, - .fh = &fhandle, - .fattr = &fattr, - .dir_fattr = &dir_fattr, - }; - struct rpc_message msg = { - .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK], - .rpc_argp = &arg, - .rpc_resp = &res, - }; - int status; + struct nfs4_createdata *data; + int status = -ENAMETOOLONG; if (len > NFS4_MAXPATHLEN) - return -ENAMETOOLONG; + goto out; - arg.u.symlink.pages = &page; - arg.u.symlink.len = len; - nfs_fattr_init(&fattr); - nfs_fattr_init(&dir_fattr); + status = -ENOMEM; + data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); + if (data == NULL) + goto out; + + data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; + data->arg.u.symlink.pages = &page; + data->arg.u.symlink.len = len; - status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); - if (!status) { - update_changeattr(dir, &res.dir_cinfo); - nfs_post_op_update_inode(dir, res.dir_fattr); - status = nfs_instantiate(dentry, &fhandle, &fattr); - } + status = nfs4_do_create(dir, dentry, data); + + nfs4_free_createdata(data); +out: return status; } @@ -2140,39 +2173,17 @@ static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) { - struct nfs_server *server = NFS_SERVER(dir); - struct nfs_fh fhandle; - struct nfs_fattr fattr, dir_fattr; - struct nfs4_create_arg arg = { - .dir_fh = NFS_FH(dir), - .server = server, - .name = &dentry->d_name, - .attrs = sattr, - .ftype = NF4DIR, - .bitmask = server->attr_bitmask, - }; - struct nfs4_create_res res = { - .server = server, - .fh = &fhandle, - .fattr = &fattr, - .dir_fattr = &dir_fattr, - }; - struct rpc_message msg = { - .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE], - .rpc_argp = &arg, - .rpc_resp = &res, - }; - int status; + struct nfs4_createdata *data; + int status = -ENOMEM; - nfs_fattr_init(&fattr); - nfs_fattr_init(&dir_fattr); - - status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); - if (!status) { - update_changeattr(dir, &res.dir_cinfo); - nfs_post_op_update_inode(dir, res.dir_fattr); - status = nfs_instantiate(dentry, &fhandle, &fattr); - } + data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); + if (data == NULL) + goto out; + + status = nfs4_do_create(dir, dentry, data); + + nfs4_free_createdata(data); +out: return status; } @@ -2242,56 +2253,34 @@ static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, dev_t rdev) { - struct nfs_server *server = NFS_SERVER(dir); - struct nfs_fh fh; - struct nfs_fattr fattr, dir_fattr; - struct nfs4_create_arg arg = { - .dir_fh = NFS_FH(dir), - .server = server, - .name = &dentry->d_name, - .attrs = sattr, - .bitmask = server->attr_bitmask, - }; - struct nfs4_create_res res = { - .server = server, - .fh = &fh, - .fattr = &fattr, - .dir_fattr = &dir_fattr, - }; - struct rpc_message msg = { - .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE], - .rpc_argp = &arg, - .rpc_resp = &res, - }; - int status; - int mode = sattr->ia_mode; - - nfs_fattr_init(&fattr); - nfs_fattr_init(&dir_fattr); + struct nfs4_createdata *data; + int mode = sattr->ia_mode; + int status = -ENOMEM; BUG_ON(!(sattr->ia_valid & ATTR_MODE)); BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); + + data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); + if (data == NULL) + goto out; + if (S_ISFIFO(mode)) - arg.ftype = NF4FIFO; + data->arg.ftype = NF4FIFO; else if (S_ISBLK(mode)) { - arg.ftype = NF4BLK; - arg.u.device.specdata1 = MAJOR(rdev); - arg.u.device.specdata2 = MINOR(rdev); + data->arg.ftype = NF4BLK; + data->arg.u.device.specdata1 = MAJOR(rdev); + data->arg.u.device.specdata2 = MINOR(rdev); } else if (S_ISCHR(mode)) { - arg.ftype = NF4CHR; - arg.u.device.specdata1 = MAJOR(rdev); - arg.u.device.specdata2 = MINOR(rdev); + data->arg.ftype = NF4CHR; + data->arg.u.device.specdata1 = MAJOR(rdev); + data->arg.u.device.specdata2 = MINOR(rdev); } - else - arg.ftype = NF4SOCK; - status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); - if (status == 0) { - update_changeattr(dir, &res.dir_cinfo); - nfs_post_op_update_inode(dir, res.dir_fattr); - status = nfs_instantiate(dentry, &fh, &fattr); - } + status = nfs4_do_create(dir, dentry, data); + + nfs4_free_createdata(data); +out: return status; } @@ -2706,6 +2695,8 @@ static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) ret = nfs_revalidate_inode(server, inode); if (ret < 0) return ret; + if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) + nfs_zap_acl_cache(inode); ret = nfs4_read_cached_acl(inode, buf, buflen); if (ret != -ENOENT) return ret; @@ -2733,7 +2724,8 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl nfs_inode_return_delegation(inode); buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); - nfs_zap_caches(inode); + nfs_access_zap_cache(inode); + nfs_zap_acl_cache(inode); return ret; } @@ -2767,8 +2759,7 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server) task->tk_status = 0; return -EAGAIN; case -NFS4ERR_DELAY: - nfs_inc_server_stats((struct nfs_server *) server, - NFSIOS_DELAY); + nfs_inc_server_stats(server, NFSIOS_DELAY); case -NFS4ERR_GRACE: rpc_delay(task, NFS4_POLL_RETRY_MAX); task->tk_status = 0; @@ -2933,7 +2924,7 @@ static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cre int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) { - long timeout; + long timeout = 0; int err; do { err = _nfs4_proc_setclientid_confirm(clp, cred); @@ -3725,8 +3716,6 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .write_done = nfs4_write_done, .commit_setup = nfs4_proc_commit_setup, .commit_done = nfs4_commit_done, - .file_open = nfs_open, - .file_release = nfs_release, .lock = nfs4_proc_lock, .clear_acl_cache = nfs4_zap_acl_attr, }; diff --git a/fs/nfs/nfsroot.c b/fs/nfs/nfsroot.c index 531379d36823..46763d1cd397 100644 --- a/fs/nfs/nfsroot.c +++ b/fs/nfs/nfsroot.c @@ -1,6 +1,4 @@ /* - * $Id: nfsroot.c,v 1.45 1998/03/07 10:44:46 mj Exp $ - * * Copyright (C) 1995, 1996 Gero Kuhlmann <gero@gkminix.han.de> * * Allow an NFS filesystem to be mounted as root. The way this works is: @@ -297,10 +295,10 @@ static int __init root_nfs_name(char *name) nfs_data.flags = NFS_MOUNT_NONLM; /* No lockd in nfs root yet */ nfs_data.rsize = NFS_DEF_FILE_IO_SIZE; nfs_data.wsize = NFS_DEF_FILE_IO_SIZE; - nfs_data.acregmin = 3; - nfs_data.acregmax = 60; - nfs_data.acdirmin = 30; - nfs_data.acdirmax = 60; + nfs_data.acregmin = NFS_DEF_ACREGMIN; + nfs_data.acregmax = NFS_DEF_ACREGMAX; + nfs_data.acdirmin = NFS_DEF_ACDIRMIN; + nfs_data.acdirmax = NFS_DEF_ACDIRMAX; strcpy(buf, NFS_ROOT); /* Process options received from the remote server */ diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index 03599bfe81cf..4dbb84df1b68 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -129,6 +129,8 @@ nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, sattr->ia_mode &= S_IALLUGO; dprintk("NFS call setattr\n"); + if (sattr->ia_valid & ATTR_FILE) + msg.rpc_cred = nfs_file_cred(sattr->ia_file); nfs_fattr_init(fattr); status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); if (status == 0) @@ -598,6 +600,29 @@ nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl) return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl); } +/* Helper functions for NFS lock bounds checking */ +#define NFS_LOCK32_OFFSET_MAX ((__s32)0x7fffffffUL) +static int nfs_lock_check_bounds(const struct file_lock *fl) +{ + __s32 start, end; + + start = (__s32)fl->fl_start; + if ((loff_t)start != fl->fl_start) + goto out_einval; + + if (fl->fl_end != OFFSET_MAX) { + end = (__s32)fl->fl_end; + if ((loff_t)end != fl->fl_end) + goto out_einval; + } else + end = NFS_LOCK32_OFFSET_MAX; + + if (start < 0 || start > end) + goto out_einval; + return 0; +out_einval: + return -EINVAL; +} const struct nfs_rpc_ops nfs_v2_clientops = { .version = 2, /* protocol version */ @@ -630,7 +655,6 @@ const struct nfs_rpc_ops nfs_v2_clientops = { .write_setup = nfs_proc_write_setup, .write_done = nfs_write_done, .commit_setup = nfs_proc_commit_setup, - .file_open = nfs_open, - .file_release = nfs_release, .lock = nfs_proc_lock, + .lock_check_bounds = nfs_lock_check_bounds, }; diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 614efeed5437..47cf83e917be 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -47,6 +47,7 @@ #include <linux/inet.h> #include <linux/in6.h> #include <net/ipv6.h> +#include <linux/netdevice.h> #include <linux/nfs_xdr.h> #include <linux/magic.h> #include <linux/parser.h> @@ -65,7 +66,6 @@ enum { /* Mount options that take no arguments */ Opt_soft, Opt_hard, - Opt_intr, Opt_nointr, Opt_posix, Opt_noposix, Opt_cto, Opt_nocto, Opt_ac, Opt_noac, @@ -92,8 +92,8 @@ enum { Opt_sec, Opt_proto, Opt_mountproto, Opt_mounthost, Opt_addr, Opt_mountaddr, Opt_clientaddr, - /* Mount options that are ignored */ - Opt_userspace, Opt_deprecated, + /* Special mount options */ + Opt_userspace, Opt_deprecated, Opt_sloppy, Opt_err }; @@ -101,10 +101,14 @@ enum { static match_table_t nfs_mount_option_tokens = { { Opt_userspace, "bg" }, { Opt_userspace, "fg" }, + { Opt_userspace, "retry=%s" }, + + { Opt_sloppy, "sloppy" }, + { Opt_soft, "soft" }, { Opt_hard, "hard" }, - { Opt_intr, "intr" }, - { Opt_nointr, "nointr" }, + { Opt_deprecated, "intr" }, + { Opt_deprecated, "nointr" }, { Opt_posix, "posix" }, { Opt_noposix, "noposix" }, { Opt_cto, "cto" }, @@ -136,7 +140,6 @@ static match_table_t nfs_mount_option_tokens = { { Opt_acdirmin, "acdirmin=%u" }, { Opt_acdirmax, "acdirmax=%u" }, { Opt_actimeo, "actimeo=%u" }, - { Opt_userspace, "retry=%u" }, { Opt_namelen, "namlen=%u" }, { Opt_mountport, "mountport=%u" }, { Opt_mountvers, "mountvers=%u" }, @@ -207,6 +210,7 @@ static int nfs_xdev_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt); static void nfs_kill_super(struct super_block *); static void nfs_put_super(struct super_block *); +static int nfs_remount(struct super_block *sb, int *flags, char *raw_data); static struct file_system_type nfs_fs_type = { .owner = THIS_MODULE, @@ -234,6 +238,7 @@ static const struct super_operations nfs_sops = { .umount_begin = nfs_umount_begin, .show_options = nfs_show_options, .show_stats = nfs_show_stats, + .remount_fs = nfs_remount, }; #ifdef CONFIG_NFS_V4 @@ -278,6 +283,7 @@ static const struct super_operations nfs4_sops = { .umount_begin = nfs_umount_begin, .show_options = nfs_show_options, .show_stats = nfs_show_stats, + .remount_fs = nfs_remount, }; #endif @@ -514,13 +520,13 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss, if (nfss->bsize != 0) seq_printf(m, ",bsize=%u", nfss->bsize); seq_printf(m, ",namlen=%u", nfss->namelen); - if (nfss->acregmin != 3*HZ || showdefaults) + if (nfss->acregmin != NFS_DEF_ACREGMIN*HZ || showdefaults) seq_printf(m, ",acregmin=%u", nfss->acregmin/HZ); - if (nfss->acregmax != 60*HZ || showdefaults) + if (nfss->acregmax != NFS_DEF_ACREGMAX*HZ || showdefaults) seq_printf(m, ",acregmax=%u", nfss->acregmax/HZ); - if (nfss->acdirmin != 30*HZ || showdefaults) + if (nfss->acdirmin != NFS_DEF_ACDIRMIN*HZ || showdefaults) seq_printf(m, ",acdirmin=%u", nfss->acdirmin/HZ); - if (nfss->acdirmax != 60*HZ || showdefaults) + if (nfss->acdirmax != NFS_DEF_ACDIRMAX*HZ || showdefaults) seq_printf(m, ",acdirmax=%u", nfss->acdirmax/HZ); for (nfs_infop = nfs_info; nfs_infop->flag; nfs_infop++) { if (nfss->flags & nfs_infop->flag) @@ -702,49 +708,233 @@ static int nfs_verify_server_address(struct sockaddr *addr) return 0; } +static void nfs_parse_ipv4_address(char *string, size_t str_len, + struct sockaddr *sap, size_t *addr_len) +{ + struct sockaddr_in *sin = (struct sockaddr_in *)sap; + u8 *addr = (u8 *)&sin->sin_addr.s_addr; + + if (str_len <= INET_ADDRSTRLEN) { + dfprintk(MOUNT, "NFS: parsing IPv4 address %*s\n", + (int)str_len, string); + + sin->sin_family = AF_INET; + *addr_len = sizeof(*sin); + if (in4_pton(string, str_len, addr, '\0', NULL)) + return; + } + + sap->sa_family = AF_UNSPEC; + *addr_len = 0; +} + +#define IPV6_SCOPE_DELIMITER '%' + +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +static void nfs_parse_ipv6_scope_id(const char *string, const size_t str_len, + const char *delim, + struct sockaddr_in6 *sin6) +{ + char *p; + size_t len; + + if (!(ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)) + return ; + if (*delim != IPV6_SCOPE_DELIMITER) + return; + + len = (string + str_len) - delim - 1; + p = kstrndup(delim + 1, len, GFP_KERNEL); + if (p) { + unsigned long scope_id = 0; + struct net_device *dev; + + dev = dev_get_by_name(&init_net, p); + if (dev != NULL) { + scope_id = dev->ifindex; + dev_put(dev); + } else { + /* scope_id is set to zero on error */ + strict_strtoul(p, 10, &scope_id); + } + + kfree(p); + sin6->sin6_scope_id = scope_id; + dfprintk(MOUNT, "NFS: IPv6 scope ID = %lu\n", scope_id); + } +} + +static void nfs_parse_ipv6_address(char *string, size_t str_len, + struct sockaddr *sap, size_t *addr_len) +{ + struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap; + u8 *addr = (u8 *)&sin6->sin6_addr.in6_u; + const char *delim; + + if (str_len <= INET6_ADDRSTRLEN) { + dfprintk(MOUNT, "NFS: parsing IPv6 address %*s\n", + (int)str_len, string); + + sin6->sin6_family = AF_INET6; + *addr_len = sizeof(*sin6); + if (in6_pton(string, str_len, addr, IPV6_SCOPE_DELIMITER, &delim)) { + nfs_parse_ipv6_scope_id(string, str_len, delim, sin6); + return; + } + } + + sap->sa_family = AF_UNSPEC; + *addr_len = 0; +} +#else +static void nfs_parse_ipv6_address(char *string, size_t str_len, + struct sockaddr *sap, size_t *addr_len) +{ + sap->sa_family = AF_UNSPEC; + *addr_len = 0; +} +#endif + /* - * Parse string addresses passed in via a mount option, - * and construct a sockaddr based on the result. + * Construct a sockaddr based on the contents of a string that contains + * an IP address in presentation format. * - * If address parsing fails, set the sockaddr's address - * family to AF_UNSPEC to force nfs_verify_server_address() - * to punt the mount. + * If there is a problem constructing the new sockaddr, set the address + * family to AF_UNSPEC. */ -static void nfs_parse_server_address(char *value, - struct sockaddr *sap, - size_t *len) +static void nfs_parse_ip_address(char *string, size_t str_len, + struct sockaddr *sap, size_t *addr_len) { - if (strchr(value, ':')) { - struct sockaddr_in6 *ap = (struct sockaddr_in6 *)sap; - u8 *addr = (u8 *)&ap->sin6_addr.in6_u; + unsigned int i, colons; - ap->sin6_family = AF_INET6; - *len = sizeof(*ap); - if (in6_pton(value, -1, addr, '\0', NULL)) - return; - } else { - struct sockaddr_in *ap = (struct sockaddr_in *)sap; - u8 *addr = (u8 *)&ap->sin_addr.s_addr; + colons = 0; + for (i = 0; i < str_len; i++) + if (string[i] == ':') + colons++; - ap->sin_family = AF_INET; - *len = sizeof(*ap); - if (in4_pton(value, -1, addr, '\0', NULL)) + if (colons >= 2) + nfs_parse_ipv6_address(string, str_len, sap, addr_len); + else + nfs_parse_ipv4_address(string, str_len, sap, addr_len); +} + +/* + * Sanity check the NFS transport protocol. + * + */ +static void nfs_validate_transport_protocol(struct nfs_parsed_mount_data *mnt) +{ + switch (mnt->nfs_server.protocol) { + case XPRT_TRANSPORT_UDP: + case XPRT_TRANSPORT_TCP: + case XPRT_TRANSPORT_RDMA: + break; + default: + mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP; + } +} + +/* + * For text based NFSv2/v3 mounts, the mount protocol transport default + * settings should depend upon the specified NFS transport. + */ +static void nfs_set_mount_transport_protocol(struct nfs_parsed_mount_data *mnt) +{ + nfs_validate_transport_protocol(mnt); + + if (mnt->mount_server.protocol == XPRT_TRANSPORT_UDP || + mnt->mount_server.protocol == XPRT_TRANSPORT_TCP) return; + switch (mnt->nfs_server.protocol) { + case XPRT_TRANSPORT_UDP: + mnt->mount_server.protocol = XPRT_TRANSPORT_UDP; + break; + case XPRT_TRANSPORT_TCP: + case XPRT_TRANSPORT_RDMA: + mnt->mount_server.protocol = XPRT_TRANSPORT_TCP; } +} - sap->sa_family = AF_UNSPEC; - *len = 0; +/* + * Parse the value of the 'sec=' option. + * + * The flavor_len setting is for v4 mounts. + */ +static int nfs_parse_security_flavors(char *value, + struct nfs_parsed_mount_data *mnt) +{ + substring_t args[MAX_OPT_ARGS]; + + dfprintk(MOUNT, "NFS: parsing sec=%s option\n", value); + + switch (match_token(value, nfs_secflavor_tokens, args)) { + case Opt_sec_none: + mnt->auth_flavor_len = 0; + mnt->auth_flavors[0] = RPC_AUTH_NULL; + break; + case Opt_sec_sys: + mnt->auth_flavor_len = 0; + mnt->auth_flavors[0] = RPC_AUTH_UNIX; + break; + case Opt_sec_krb5: + mnt->auth_flavor_len = 1; + mnt->auth_flavors[0] = RPC_AUTH_GSS_KRB5; + break; + case Opt_sec_krb5i: + mnt->auth_flavor_len = 1; + mnt->auth_flavors[0] = RPC_AUTH_GSS_KRB5I; + break; + case Opt_sec_krb5p: + mnt->auth_flavor_len = 1; + mnt->auth_flavors[0] = RPC_AUTH_GSS_KRB5P; + break; + case Opt_sec_lkey: + mnt->auth_flavor_len = 1; + mnt->auth_flavors[0] = RPC_AUTH_GSS_LKEY; + break; + case Opt_sec_lkeyi: + mnt->auth_flavor_len = 1; + mnt->auth_flavors[0] = RPC_AUTH_GSS_LKEYI; + break; + case Opt_sec_lkeyp: + mnt->auth_flavor_len = 1; + mnt->auth_flavors[0] = RPC_AUTH_GSS_LKEYP; + break; + case Opt_sec_spkm: + mnt->auth_flavor_len = 1; + mnt->auth_flavors[0] = RPC_AUTH_GSS_SPKM; + break; + case Opt_sec_spkmi: + mnt->auth_flavor_len = 1; + mnt->auth_flavors[0] = RPC_AUTH_GSS_SPKMI; + break; + case Opt_sec_spkmp: + mnt->auth_flavor_len = 1; + mnt->auth_flavors[0] = RPC_AUTH_GSS_SPKMP; + break; + default: + return 0; + } + + return 1; +} + +static void nfs_parse_invalid_value(const char *option) +{ + dfprintk(MOUNT, "NFS: bad value specified for %s option\n", option); } /* * Error-check and convert a string of mount options from user space into - * a data structure + * a data structure. The whole mount string is processed; bad options are + * skipped as they are encountered. If there were no errors, return 1; + * otherwise return 0 (zero). */ static int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt) { char *p, *string, *secdata; - int rc; + int rc, sloppy = 0, errors = 0; if (!raw) { dfprintk(MOUNT, "NFS: mount options string was NULL.\n"); @@ -777,15 +967,16 @@ static int nfs_parse_mount_options(char *raw, token = match_token(p, nfs_mount_option_tokens, args); switch (token) { + + /* + * boolean options: foo/nofoo + */ case Opt_soft: mnt->flags |= NFS_MOUNT_SOFT; break; case Opt_hard: mnt->flags &= ~NFS_MOUNT_SOFT; break; - case Opt_intr: - case Opt_nointr: - break; case Opt_posix: mnt->flags |= NFS_MOUNT_POSIX; break; @@ -819,20 +1010,14 @@ static int nfs_parse_mount_options(char *raw, case Opt_udp: mnt->flags &= ~NFS_MOUNT_TCP; mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP; - mnt->timeo = 7; - mnt->retrans = 5; break; case Opt_tcp: mnt->flags |= NFS_MOUNT_TCP; mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP; - mnt->timeo = 600; - mnt->retrans = 2; break; case Opt_rdma: mnt->flags |= NFS_MOUNT_TCP; /* for side protocols */ mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA; - mnt->timeo = 600; - mnt->retrans = 2; break; case Opt_acl: mnt->flags &= ~NFS_MOUNT_NOACL; @@ -853,165 +1038,144 @@ static int nfs_parse_mount_options(char *raw, mnt->flags |= NFS_MOUNT_UNSHARED; break; + /* + * options that take numeric values + */ case Opt_port: - if (match_int(args, &option)) - return 0; - if (option < 0 || option > 65535) - return 0; - mnt->nfs_server.port = option; + if (match_int(args, &option) || + option < 0 || option > USHORT_MAX) { + errors++; + nfs_parse_invalid_value("port"); + } else + mnt->nfs_server.port = option; break; case Opt_rsize: - if (match_int(args, &mnt->rsize)) - return 0; + if (match_int(args, &option) || option < 0) { + errors++; + nfs_parse_invalid_value("rsize"); + } else + mnt->rsize = option; break; case Opt_wsize: - if (match_int(args, &mnt->wsize)) - return 0; + if (match_int(args, &option) || option < 0) { + errors++; + nfs_parse_invalid_value("wsize"); + } else + mnt->wsize = option; break; case Opt_bsize: - if (match_int(args, &option)) - return 0; - if (option < 0) - return 0; - mnt->bsize = option; + if (match_int(args, &option) || option < 0) { + errors++; + nfs_parse_invalid_value("bsize"); + } else + mnt->bsize = option; break; case Opt_timeo: - if (match_int(args, &mnt->timeo)) - return 0; + if (match_int(args, &option) || option <= 0) { + errors++; + nfs_parse_invalid_value("timeo"); + } else + mnt->timeo = option; break; case Opt_retrans: - if (match_int(args, &mnt->retrans)) - return 0; + if (match_int(args, &option) || option <= 0) { + errors++; + nfs_parse_invalid_value("retrans"); + } else + mnt->retrans = option; break; case Opt_acregmin: - if (match_int(args, &mnt->acregmin)) - return 0; + if (match_int(args, &option) || option < 0) { + errors++; + nfs_parse_invalid_value("acregmin"); + } else + mnt->acregmin = option; break; case Opt_acregmax: - if (match_int(args, &mnt->acregmax)) - return 0; + if (match_int(args, &option) || option < 0) { + errors++; + nfs_parse_invalid_value("acregmax"); + } else + mnt->acregmax = option; break; case Opt_acdirmin: - if (match_int(args, &mnt->acdirmin)) - return 0; + if (match_int(args, &option) || option < 0) { + errors++; + nfs_parse_invalid_value("acdirmin"); + } else + mnt->acdirmin = option; break; case Opt_acdirmax: - if (match_int(args, &mnt->acdirmax)) - return 0; + if (match_int(args, &option) || option < 0) { + errors++; + nfs_parse_invalid_value("acdirmax"); + } else + mnt->acdirmax = option; break; case Opt_actimeo: - if (match_int(args, &option)) - return 0; - if (option < 0) - return 0; - mnt->acregmin = - mnt->acregmax = - mnt->acdirmin = - mnt->acdirmax = option; + if (match_int(args, &option) || option < 0) { + errors++; + nfs_parse_invalid_value("actimeo"); + } else + mnt->acregmin = mnt->acregmax = + mnt->acdirmin = mnt->acdirmax = option; break; case Opt_namelen: - if (match_int(args, &mnt->namlen)) - return 0; + if (match_int(args, &option) || option < 0) { + errors++; + nfs_parse_invalid_value("namlen"); + } else + mnt->namlen = option; break; case Opt_mountport: - if (match_int(args, &option)) - return 0; - if (option < 0 || option > 65535) - return 0; - mnt->mount_server.port = option; + if (match_int(args, &option) || + option < 0 || option > USHORT_MAX) { + errors++; + nfs_parse_invalid_value("mountport"); + } else + mnt->mount_server.port = option; break; case Opt_mountvers: - if (match_int(args, &option)) - return 0; - if (option < 0) - return 0; - mnt->mount_server.version = option; + if (match_int(args, &option) || + option < NFS_MNT_VERSION || + option > NFS_MNT3_VERSION) { + errors++; + nfs_parse_invalid_value("mountvers"); + } else + mnt->mount_server.version = option; break; case Opt_nfsvers: - if (match_int(args, &option)) - return 0; + if (match_int(args, &option)) { + errors++; + nfs_parse_invalid_value("nfsvers"); + break; + } switch (option) { - case 2: + case NFS2_VERSION: mnt->flags &= ~NFS_MOUNT_VER3; break; - case 3: + case NFS3_VERSION: mnt->flags |= NFS_MOUNT_VER3; break; default: - goto out_unrec_vers; + errors++; + nfs_parse_invalid_value("nfsvers"); } break; + /* + * options that take text values + */ case Opt_sec: string = match_strdup(args); if (string == NULL) goto out_nomem; - token = match_token(string, nfs_secflavor_tokens, args); + rc = nfs_parse_security_flavors(string, mnt); kfree(string); - - /* - * The flags setting is for v2/v3. The flavor_len - * setting is for v4. v2/v3 also need to know the - * difference between NULL and UNIX. - */ - switch (token) { - case Opt_sec_none: - mnt->flags &= ~NFS_MOUNT_SECFLAVOUR; - mnt->auth_flavor_len = 0; - mnt->auth_flavors[0] = RPC_AUTH_NULL; - break; - case Opt_sec_sys: - mnt->flags &= ~NFS_MOUNT_SECFLAVOUR; - mnt->auth_flavor_len = 0; - mnt->auth_flavors[0] = RPC_AUTH_UNIX; - break; - case Opt_sec_krb5: - mnt->flags |= NFS_MOUNT_SECFLAVOUR; - mnt->auth_flavor_len = 1; - mnt->auth_flavors[0] = RPC_AUTH_GSS_KRB5; - break; - case Opt_sec_krb5i: - mnt->flags |= NFS_MOUNT_SECFLAVOUR; - mnt->auth_flavor_len = 1; - mnt->auth_flavors[0] = RPC_AUTH_GSS_KRB5I; - break; - case Opt_sec_krb5p: - mnt->flags |= NFS_MOUNT_SECFLAVOUR; - mnt->auth_flavor_len = 1; - mnt->auth_flavors[0] = RPC_AUTH_GSS_KRB5P; - break; - case Opt_sec_lkey: - mnt->flags |= NFS_MOUNT_SECFLAVOUR; - mnt->auth_flavor_len = 1; - mnt->auth_flavors[0] = RPC_AUTH_GSS_LKEY; - break; - case Opt_sec_lkeyi: - mnt->flags |= NFS_MOUNT_SECFLAVOUR; - mnt->auth_flavor_len = 1; - mnt->auth_flavors[0] = RPC_AUTH_GSS_LKEYI; - break; - case Opt_sec_lkeyp: - mnt->flags |= NFS_MOUNT_SECFLAVOUR; - mnt->auth_flavor_len = 1; - mnt->auth_flavors[0] = RPC_AUTH_GSS_LKEYP; - break; - case Opt_sec_spkm: - mnt->flags |= NFS_MOUNT_SECFLAVOUR; - mnt->auth_flavor_len = 1; - mnt->auth_flavors[0] = RPC_AUTH_GSS_SPKM; - break; - case Opt_sec_spkmi: - mnt->flags |= NFS_MOUNT_SECFLAVOUR; - mnt->auth_flavor_len = 1; - mnt->auth_flavors[0] = RPC_AUTH_GSS_SPKMI; - break; - case Opt_sec_spkmp: - mnt->flags |= NFS_MOUNT_SECFLAVOUR; - mnt->auth_flavor_len = 1; - mnt->auth_flavors[0] = RPC_AUTH_GSS_SPKMP; - break; - default: - goto out_unrec_sec; + if (!rc) { + errors++; + dfprintk(MOUNT, "NFS: unrecognized " + "security flavor\n"); } break; case Opt_proto: @@ -1026,24 +1190,20 @@ static int nfs_parse_mount_options(char *raw, case Opt_xprt_udp: mnt->flags &= ~NFS_MOUNT_TCP; mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP; - mnt->timeo = 7; - mnt->retrans = 5; break; case Opt_xprt_tcp: mnt->flags |= NFS_MOUNT_TCP; mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP; - mnt->timeo = 600; - mnt->retrans = 2; break; case Opt_xprt_rdma: /* vector side protocols to TCP */ mnt->flags |= NFS_MOUNT_TCP; mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA; - mnt->timeo = 600; - mnt->retrans = 2; break; default: - goto out_unrec_xprt; + errors++; + dfprintk(MOUNT, "NFS: unrecognized " + "transport protocol\n"); } break; case Opt_mountproto: @@ -1063,16 +1223,19 @@ static int nfs_parse_mount_options(char *raw, break; case Opt_xprt_rdma: /* not used for side protocols */ default: - goto out_unrec_xprt; + errors++; + dfprintk(MOUNT, "NFS: unrecognized " + "transport protocol\n"); } break; case Opt_addr: string = match_strdup(args); if (string == NULL) goto out_nomem; - nfs_parse_server_address(string, (struct sockaddr *) - &mnt->nfs_server.address, - &mnt->nfs_server.addrlen); + nfs_parse_ip_address(string, strlen(string), + (struct sockaddr *) + &mnt->nfs_server.address, + &mnt->nfs_server.addrlen); kfree(string); break; case Opt_clientaddr: @@ -1093,24 +1256,33 @@ static int nfs_parse_mount_options(char *raw, string = match_strdup(args); if (string == NULL) goto out_nomem; - nfs_parse_server_address(string, (struct sockaddr *) - &mnt->mount_server.address, - &mnt->mount_server.addrlen); + nfs_parse_ip_address(string, strlen(string), + (struct sockaddr *) + &mnt->mount_server.address, + &mnt->mount_server.addrlen); kfree(string); break; + /* + * Special options + */ + case Opt_sloppy: + sloppy = 1; + dfprintk(MOUNT, "NFS: relaxing parsing rules\n"); + break; case Opt_userspace: case Opt_deprecated: + dfprintk(MOUNT, "NFS: ignoring mount option " + "'%s'\n", p); break; default: - goto out_unknown; + errors++; + dfprintk(MOUNT, "NFS: unrecognized mount option " + "'%s'\n", p); } } - nfs_set_port((struct sockaddr *)&mnt->nfs_server.address, - mnt->nfs_server.port); - return 1; out_nomem: @@ -1120,21 +1292,6 @@ out_security_failure: free_secdata(secdata); printk(KERN_INFO "NFS: security options invalid: %d\n", rc); return 0; -out_unrec_vers: - printk(KERN_INFO "NFS: unrecognized NFS version number\n"); - return 0; - -out_unrec_xprt: - printk(KERN_INFO "NFS: unrecognized transport protocol\n"); - return 0; - -out_unrec_sec: - printk(KERN_INFO "NFS: unrecognized security flavor\n"); - return 0; - -out_unknown: - printk(KERN_INFO "NFS: unknown mount option: %s\n", p); - return 0; } /* @@ -1188,11 +1345,146 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args, if (status == 0) return 0; - dfprintk(MOUNT, "NFS: unable to mount server %s, error %d", + dfprintk(MOUNT, "NFS: unable to mount server %s, error %d\n", hostname, status); return status; } +static int nfs_parse_simple_hostname(const char *dev_name, + char **hostname, size_t maxnamlen, + char **export_path, size_t maxpathlen) +{ + size_t len; + char *colon, *comma; + + colon = strchr(dev_name, ':'); + if (colon == NULL) + goto out_bad_devname; + + len = colon - dev_name; + if (len > maxnamlen) + goto out_hostname; + + /* N.B. caller will free nfs_server.hostname in all cases */ + *hostname = kstrndup(dev_name, len, GFP_KERNEL); + if (!*hostname) + goto out_nomem; + + /* kill possible hostname list: not supported */ + comma = strchr(*hostname, ','); + if (comma != NULL) { + if (comma == *hostname) + goto out_bad_devname; + *comma = '\0'; + } + + colon++; + len = strlen(colon); + if (len > maxpathlen) + goto out_path; + *export_path = kstrndup(colon, len, GFP_KERNEL); + if (!*export_path) + goto out_nomem; + + dfprintk(MOUNT, "NFS: MNTPATH: '%s'\n", *export_path); + return 0; + +out_bad_devname: + dfprintk(MOUNT, "NFS: device name not in host:path format\n"); + return -EINVAL; + +out_nomem: + dfprintk(MOUNT, "NFS: not enough memory to parse device name\n"); + return -ENOMEM; + +out_hostname: + dfprintk(MOUNT, "NFS: server hostname too long\n"); + return -ENAMETOOLONG; + +out_path: + dfprintk(MOUNT, "NFS: export pathname too long\n"); + return -ENAMETOOLONG; +} + +/* + * Hostname has square brackets around it because it contains one or + * more colons. We look for the first closing square bracket, and a + * colon must follow it. + */ +static int nfs_parse_protected_hostname(const char *dev_name, + char **hostname, size_t maxnamlen, + char **export_path, size_t maxpathlen) +{ + size_t len; + char *start, *end; + + start = (char *)(dev_name + 1); + + end = strchr(start, ']'); + if (end == NULL) + goto out_bad_devname; + if (*(end + 1) != ':') + goto out_bad_devname; + + len = end - start; + if (len > maxnamlen) + goto out_hostname; + + /* N.B. caller will free nfs_server.hostname in all cases */ + *hostname = kstrndup(start, len, GFP_KERNEL); + if (*hostname == NULL) + goto out_nomem; + + end += 2; + len = strlen(end); + if (len > maxpathlen) + goto out_path; + *export_path = kstrndup(end, len, GFP_KERNEL); + if (!*export_path) + goto out_nomem; + + return 0; + +out_bad_devname: + dfprintk(MOUNT, "NFS: device name not in host:path format\n"); + return -EINVAL; + +out_nomem: + dfprintk(MOUNT, "NFS: not enough memory to parse device name\n"); + return -ENOMEM; + +out_hostname: + dfprintk(MOUNT, "NFS: server hostname too long\n"); + return -ENAMETOOLONG; + +out_path: + dfprintk(MOUNT, "NFS: export pathname too long\n"); + return -ENAMETOOLONG; +} + +/* + * Split "dev_name" into "hostname:export_path". + * + * The leftmost colon demarks the split between the server's hostname + * and the export path. If the hostname starts with a left square + * bracket, then it may contain colons. + * + * Note: caller frees hostname and export path, even on error. + */ +static int nfs_parse_devname(const char *dev_name, + char **hostname, size_t maxnamlen, + char **export_path, size_t maxpathlen) +{ + if (*dev_name == '[') + return nfs_parse_protected_hostname(dev_name, + hostname, maxnamlen, + export_path, maxpathlen); + + return nfs_parse_simple_hostname(dev_name, + hostname, maxnamlen, + export_path, maxpathlen); +} + /* * Validate the NFS2/NFS3 mount data * - fills in the mount root filehandle @@ -1222,16 +1514,14 @@ static int nfs_validate_mount_data(void *options, args->flags = (NFS_MOUNT_VER3 | NFS_MOUNT_TCP); args->rsize = NFS_MAX_FILE_IO_SIZE; args->wsize = NFS_MAX_FILE_IO_SIZE; - args->timeo = 600; - args->retrans = 2; - args->acregmin = 3; - args->acregmax = 60; - args->acdirmin = 30; - args->acdirmax = 60; + args->acregmin = NFS_DEF_ACREGMIN; + args->acregmax = NFS_DEF_ACREGMAX; + args->acdirmin = NFS_DEF_ACDIRMIN; + args->acdirmax = NFS_DEF_ACDIRMAX; args->mount_server.port = 0; /* autobind unless user sets port */ - args->mount_server.protocol = XPRT_TRANSPORT_UDP; args->nfs_server.port = 0; /* autobind unless user sets port */ args->nfs_server.protocol = XPRT_TRANSPORT_TCP; + args->auth_flavors[0] = RPC_AUTH_UNIX; switch (data->version) { case 1: @@ -1289,7 +1579,9 @@ static int nfs_validate_mount_data(void *options, args->nfs_server.hostname = kstrdup(data->hostname, GFP_KERNEL); args->namlen = data->namlen; args->bsize = data->bsize; - args->auth_flavors[0] = data->pseudoflavor; + + if (data->flags & NFS_MOUNT_SECFLAVOUR) + args->auth_flavors[0] = data->pseudoflavor; if (!args->nfs_server.hostname) goto out_nomem; @@ -1321,8 +1613,6 @@ static int nfs_validate_mount_data(void *options, break; default: { - unsigned int len; - char *c; int status; if (nfs_parse_mount_options((char *)options, args) == 0) @@ -1332,21 +1622,22 @@ static int nfs_validate_mount_data(void *options, &args->nfs_server.address)) goto out_no_address; - c = strchr(dev_name, ':'); - if (c == NULL) - return -EINVAL; - len = c - dev_name; - /* N.B. caller will free nfs_server.hostname in all cases */ - args->nfs_server.hostname = kstrndup(dev_name, len, GFP_KERNEL); - if (!args->nfs_server.hostname) - goto out_nomem; + nfs_set_port((struct sockaddr *)&args->nfs_server.address, + args->nfs_server.port); - c++; - if (strlen(c) > NFS_MAXPATHLEN) - return -ENAMETOOLONG; - args->nfs_server.export_path = c; + nfs_set_mount_transport_protocol(args); + + status = nfs_parse_devname(dev_name, + &args->nfs_server.hostname, + PAGE_SIZE, + &args->nfs_server.export_path, + NFS_MAXPATHLEN); + if (!status) + status = nfs_try_mount(args, mntfh); + + kfree(args->nfs_server.export_path); + args->nfs_server.export_path = NULL; - status = nfs_try_mount(args, mntfh); if (status) return status; @@ -1354,9 +1645,6 @@ static int nfs_validate_mount_data(void *options, } } - if (!(args->flags & NFS_MOUNT_SECFLAVOUR)) - args->auth_flavors[0] = RPC_AUTH_UNIX; - #ifndef CONFIG_NFS_V3 if (args->flags & NFS_MOUNT_VER3) goto out_v3_not_compiled; @@ -1396,6 +1684,80 @@ out_invalid_fh: return -EINVAL; } +static int +nfs_compare_remount_data(struct nfs_server *nfss, + struct nfs_parsed_mount_data *data) +{ + if (data->flags != nfss->flags || + data->rsize != nfss->rsize || + data->wsize != nfss->wsize || + data->retrans != nfss->client->cl_timeout->to_retries || + data->auth_flavors[0] != nfss->client->cl_auth->au_flavor || + data->acregmin != nfss->acregmin / HZ || + data->acregmax != nfss->acregmax / HZ || + data->acdirmin != nfss->acdirmin / HZ || + data->acdirmax != nfss->acdirmax / HZ || + data->timeo != (10U * nfss->client->cl_timeout->to_initval / HZ) || + data->nfs_server.addrlen != nfss->nfs_client->cl_addrlen || + memcmp(&data->nfs_server.address, &nfss->nfs_client->cl_addr, + data->nfs_server.addrlen) != 0) + return -EINVAL; + + return 0; +} + +static int +nfs_remount(struct super_block *sb, int *flags, char *raw_data) +{ + int error; + struct nfs_server *nfss = sb->s_fs_info; + struct nfs_parsed_mount_data *data; + struct nfs_mount_data *options = (struct nfs_mount_data *)raw_data; + struct nfs4_mount_data *options4 = (struct nfs4_mount_data *)raw_data; + u32 nfsvers = nfss->nfs_client->rpc_ops->version; + + /* + * Userspace mount programs that send binary options generally send + * them populated with default values. We have no way to know which + * ones were explicitly specified. Fall back to legacy behavior and + * just return success. + */ + if ((nfsvers == 4 && options4->version == 1) || + (nfsvers <= 3 && options->version >= 1 && + options->version <= 6)) + return 0; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (data == NULL) + return -ENOMEM; + + /* fill out struct with values from existing mount */ + data->flags = nfss->flags; + data->rsize = nfss->rsize; + data->wsize = nfss->wsize; + data->retrans = nfss->client->cl_timeout->to_retries; + data->auth_flavors[0] = nfss->client->cl_auth->au_flavor; + data->acregmin = nfss->acregmin / HZ; + data->acregmax = nfss->acregmax / HZ; + data->acdirmin = nfss->acdirmin / HZ; + data->acdirmax = nfss->acdirmax / HZ; + data->timeo = 10U * nfss->client->cl_timeout->to_initval / HZ; + data->nfs_server.addrlen = nfss->nfs_client->cl_addrlen; + memcpy(&data->nfs_server.address, &nfss->nfs_client->cl_addr, + data->nfs_server.addrlen); + + /* overwrite those values with any that were specified */ + error = nfs_parse_mount_options((char *)options, data); + if (error < 0) + goto out; + + /* compare new mount options with old ones */ + error = nfs_compare_remount_data(nfss, data); +out: + kfree(data); + return error; +} + /* * Initialise the common bits of the superblock */ @@ -1811,14 +2173,13 @@ static int nfs4_validate_mount_data(void *options, args->rsize = NFS_MAX_FILE_IO_SIZE; args->wsize = NFS_MAX_FILE_IO_SIZE; - args->timeo = 600; - args->retrans = 2; - args->acregmin = 3; - args->acregmax = 60; - args->acdirmin = 30; - args->acdirmax = 60; + args->acregmin = NFS_DEF_ACREGMIN; + args->acregmax = NFS_DEF_ACREGMAX; + args->acdirmin = NFS_DEF_ACDIRMIN; + args->acdirmax = NFS_DEF_ACDIRMAX; args->nfs_server.port = NFS_PORT; /* 2049 unless user set port= */ - args->nfs_server.protocol = XPRT_TRANSPORT_TCP; + args->auth_flavors[0] = RPC_AUTH_UNIX; + args->auth_flavor_len = 0; switch (data->version) { case 1: @@ -1834,18 +2195,13 @@ static int nfs4_validate_mount_data(void *options, &args->nfs_server.address)) goto out_no_address; - switch (data->auth_flavourlen) { - case 0: - args->auth_flavors[0] = RPC_AUTH_UNIX; - break; - case 1: + if (data->auth_flavourlen) { + if (data->auth_flavourlen > 1) + goto out_inval_auth; if (copy_from_user(&args->auth_flavors[0], data->auth_flavours, sizeof(args->auth_flavors[0]))) return -EFAULT; - break; - default: - goto out_inval_auth; } c = strndup_user(data->hostname.data, NFS4_MAXNAMLEN); @@ -1879,10 +2235,11 @@ static int nfs4_validate_mount_data(void *options, args->acdirmin = data->acdirmin; args->acdirmax = data->acdirmax; args->nfs_server.protocol = data->proto; + nfs_validate_transport_protocol(args); break; default: { - unsigned int len; + int status; if (nfs_parse_mount_options((char *)options, args) == 0) return -EINVAL; @@ -1891,44 +2248,25 @@ static int nfs4_validate_mount_data(void *options, &args->nfs_server.address)) return -EINVAL; - switch (args->auth_flavor_len) { - case 0: - args->auth_flavors[0] = RPC_AUTH_UNIX; - break; - case 1: - break; - default: - goto out_inval_auth; - } + nfs_set_port((struct sockaddr *)&args->nfs_server.address, + args->nfs_server.port); - /* - * Split "dev_name" into "hostname:mntpath". - */ - c = strchr(dev_name, ':'); - if (c == NULL) - return -EINVAL; - /* while calculating len, pretend ':' is '\0' */ - len = c - dev_name; - if (len > NFS4_MAXNAMLEN) - return -ENAMETOOLONG; - /* N.B. caller will free nfs_server.hostname in all cases */ - args->nfs_server.hostname = kstrndup(dev_name, len, GFP_KERNEL); - if (!args->nfs_server.hostname) - goto out_nomem; - - c++; /* step over the ':' */ - len = strlen(c); - if (len > NFS4_MAXPATHLEN) - return -ENAMETOOLONG; - args->nfs_server.export_path = kstrndup(c, len, GFP_KERNEL); - if (!args->nfs_server.export_path) - goto out_nomem; + nfs_validate_transport_protocol(args); - dprintk("NFS: MNTPATH: '%s'\n", args->nfs_server.export_path); + if (args->auth_flavor_len > 1) + goto out_inval_auth; if (args->client_address == NULL) goto out_no_client_address; + status = nfs_parse_devname(dev_name, + &args->nfs_server.hostname, + NFS4_MAXNAMLEN, + &args->nfs_server.export_path, + NFS4_MAXPATHLEN); + if (status < 0) + return status; + break; } } @@ -1944,10 +2282,6 @@ out_inval_auth: data->auth_flavourlen); return -EINVAL; -out_nomem: - dfprintk(MOUNT, "NFS4: not enough memory to handle mount options\n"); - return -ENOMEM; - out_no_address: dfprintk(MOUNT, "NFS4: mount program didn't pass remote address\n"); return -EINVAL; diff --git a/fs/nfs/write.c b/fs/nfs/write.c index f333848fd3be..feca8c648766 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -34,9 +34,6 @@ /* * Local function declarations */ -static struct nfs_page * nfs_update_request(struct nfs_open_context*, - struct page *, - unsigned int, unsigned int); static void nfs_pageio_init_write(struct nfs_pageio_descriptor *desc, struct inode *inode, int ioflags); static void nfs_redirty_request(struct nfs_page *req); @@ -169,29 +166,6 @@ static void nfs_mark_uptodate(struct page *page, unsigned int base, unsigned int SetPageUptodate(page); } -static int nfs_writepage_setup(struct nfs_open_context *ctx, struct page *page, - unsigned int offset, unsigned int count) -{ - struct nfs_page *req; - int ret; - - for (;;) { - req = nfs_update_request(ctx, page, offset, count); - if (!IS_ERR(req)) - break; - ret = PTR_ERR(req); - if (ret != -EBUSY) - return ret; - ret = nfs_wb_page(page->mapping->host, page); - if (ret != 0) - return ret; - } - /* Update file length */ - nfs_grow_file(page, offset, count); - nfs_clear_page_tag_locked(req); - return 0; -} - static int wb_priority(struct writeback_control *wbc) { if (wbc->for_reclaim) @@ -268,12 +242,9 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio, return ret; spin_lock(&inode->i_lock); } - if (test_bit(PG_NEED_COMMIT, &req->wb_flags)) { - /* This request is marked for commit */ + if (test_bit(PG_CLEAN, &req->wb_flags)) { spin_unlock(&inode->i_lock); - nfs_clear_page_tag_locked(req); - nfs_pageio_complete(pgio); - return 0; + BUG(); } if (nfs_set_page_writeback(page) != 0) { spin_unlock(&inode->i_lock); @@ -355,11 +326,19 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc) /* * Insert a write request into an inode */ -static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req) +static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req) { struct nfs_inode *nfsi = NFS_I(inode); int error; + error = radix_tree_preload(GFP_NOFS); + if (error != 0) + goto out; + + /* Lock the request! */ + nfs_lock_request_dontget(req); + + spin_lock(&inode->i_lock); error = radix_tree_insert(&nfsi->nfs_page_tree, req->wb_index, req); BUG_ON(error); if (!nfsi->npages) { @@ -373,6 +352,10 @@ static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req) kref_get(&req->wb_kref); radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED); + spin_unlock(&inode->i_lock); + radix_tree_preload_end(); +out: + return error; } /* @@ -405,19 +388,6 @@ nfs_mark_request_dirty(struct nfs_page *req) __set_page_dirty_nobuffers(req->wb_page); } -/* - * Check if a request is dirty - */ -static inline int -nfs_dirty_request(struct nfs_page *req) -{ - struct page *page = req->wb_page; - - if (page == NULL || test_bit(PG_NEED_COMMIT, &req->wb_flags)) - return 0; - return !PageWriteback(page); -} - #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) /* * Add a request to the inode's commit list. @@ -430,7 +400,7 @@ nfs_mark_request_commit(struct nfs_page *req) spin_lock(&inode->i_lock); nfsi->ncommit++; - set_bit(PG_NEED_COMMIT, &(req)->wb_flags); + set_bit(PG_CLEAN, &(req)->wb_flags); radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_COMMIT); @@ -440,6 +410,19 @@ nfs_mark_request_commit(struct nfs_page *req) __mark_inode_dirty(inode, I_DIRTY_DATASYNC); } +static int +nfs_clear_request_commit(struct nfs_page *req) +{ + struct page *page = req->wb_page; + + if (test_and_clear_bit(PG_CLEAN, &(req)->wb_flags)) { + dec_zone_page_state(page, NR_UNSTABLE_NFS); + dec_bdi_stat(page->mapping->backing_dev_info, BDI_RECLAIMABLE); + return 1; + } + return 0; +} + static inline int nfs_write_need_commit(struct nfs_write_data *data) { @@ -449,7 +432,7 @@ int nfs_write_need_commit(struct nfs_write_data *data) static inline int nfs_reschedule_unstable_write(struct nfs_page *req) { - if (test_bit(PG_NEED_COMMIT, &req->wb_flags)) { + if (test_and_clear_bit(PG_NEED_COMMIT, &req->wb_flags)) { nfs_mark_request_commit(req); return 1; } @@ -465,6 +448,12 @@ nfs_mark_request_commit(struct nfs_page *req) { } +static inline int +nfs_clear_request_commit(struct nfs_page *req) +{ + return 0; +} + static inline int nfs_write_need_commit(struct nfs_write_data *data) { @@ -522,11 +511,8 @@ static void nfs_cancel_commit_list(struct list_head *head) while(!list_empty(head)) { req = nfs_list_entry(head->next); - dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); - dec_bdi_stat(req->wb_page->mapping->backing_dev_info, - BDI_RECLAIMABLE); nfs_list_remove_request(req); - clear_bit(PG_NEED_COMMIT, &(req)->wb_flags); + nfs_clear_request_commit(req); nfs_inode_remove_request(req); nfs_unlock_request(req); } @@ -564,110 +550,124 @@ static inline int nfs_scan_commit(struct inode *inode, struct list_head *dst, pg #endif /* - * Try to update any existing write request, or create one if there is none. - * In order to match, the request's credentials must match those of - * the calling process. + * Search for an existing write request, and attempt to update + * it to reflect a new dirty region on a given page. * - * Note: Should always be called with the Page Lock held! + * If the attempt fails, then the existing request is flushed out + * to disk. */ -static struct nfs_page * nfs_update_request(struct nfs_open_context* ctx, - struct page *page, unsigned int offset, unsigned int bytes) +static struct nfs_page *nfs_try_to_update_request(struct inode *inode, + struct page *page, + unsigned int offset, + unsigned int bytes) { - struct address_space *mapping = page->mapping; - struct inode *inode = mapping->host; - struct nfs_page *req, *new = NULL; - pgoff_t rqend, end; + struct nfs_page *req; + unsigned int rqend; + unsigned int end; + int error; + + if (!PagePrivate(page)) + return NULL; end = offset + bytes; + spin_lock(&inode->i_lock); for (;;) { - /* Loop over all inode entries and see if we find - * A request for the page we wish to update + req = nfs_page_find_request_locked(page); + if (req == NULL) + goto out_unlock; + + rqend = req->wb_offset + req->wb_bytes; + /* + * Tell the caller to flush out the request if + * the offsets are non-contiguous. + * Note: nfs_flush_incompatible() will already + * have flushed out requests having wrong owners. */ - if (new) { - if (radix_tree_preload(GFP_NOFS)) { - nfs_release_request(new); - return ERR_PTR(-ENOMEM); - } - } + if (offset > rqend + || end < req->wb_offset) + goto out_flushme; - spin_lock(&inode->i_lock); - req = nfs_page_find_request_locked(page); - if (req) { - if (!nfs_set_page_tag_locked(req)) { - int error; - - spin_unlock(&inode->i_lock); - error = nfs_wait_on_request(req); - nfs_release_request(req); - if (error < 0) { - if (new) { - radix_tree_preload_end(); - nfs_release_request(new); - } - return ERR_PTR(error); - } - continue; - } - spin_unlock(&inode->i_lock); - if (new) { - radix_tree_preload_end(); - nfs_release_request(new); - } + if (nfs_set_page_tag_locked(req)) break; - } - if (new) { - nfs_lock_request_dontget(new); - nfs_inode_add_request(inode, new); - spin_unlock(&inode->i_lock); - radix_tree_preload_end(); - req = new; - goto zero_page; - } + /* The request is locked, so wait and then retry */ spin_unlock(&inode->i_lock); - - new = nfs_create_request(ctx, inode, page, offset, bytes); - if (IS_ERR(new)) - return new; + error = nfs_wait_on_request(req); + nfs_release_request(req); + if (error != 0) + goto out_err; + spin_lock(&inode->i_lock); } - /* We have a request for our page. - * If the creds don't match, or the - * page addresses don't match, - * tell the caller to wait on the conflicting - * request. - */ - rqend = req->wb_offset + req->wb_bytes; - if (req->wb_context != ctx - || req->wb_page != page - || !nfs_dirty_request(req) - || offset > rqend || end < req->wb_offset) { - nfs_clear_page_tag_locked(req); - return ERR_PTR(-EBUSY); - } + if (nfs_clear_request_commit(req)) + radix_tree_tag_clear(&NFS_I(inode)->nfs_page_tree, + req->wb_index, NFS_PAGE_TAG_COMMIT); /* Okay, the request matches. Update the region */ if (offset < req->wb_offset) { req->wb_offset = offset; req->wb_pgbase = offset; - req->wb_bytes = max(end, rqend) - req->wb_offset; - goto zero_page; } - if (end > rqend) req->wb_bytes = end - req->wb_offset; - + else + req->wb_bytes = rqend - req->wb_offset; +out_unlock: + spin_unlock(&inode->i_lock); return req; -zero_page: - /* If this page might potentially be marked as up to date, - * then we need to zero any uninitalised data. */ - if (req->wb_pgbase == 0 && req->wb_bytes != PAGE_CACHE_SIZE - && !PageUptodate(req->wb_page)) - zero_user_segment(req->wb_page, req->wb_bytes, PAGE_CACHE_SIZE); +out_flushme: + spin_unlock(&inode->i_lock); + nfs_release_request(req); + error = nfs_wb_page(inode, page); +out_err: + return ERR_PTR(error); +} + +/* + * Try to update an existing write request, or create one if there is none. + * + * Note: Should always be called with the Page Lock held to prevent races + * if we have to add a new request. Also assumes that the caller has + * already called nfs_flush_incompatible() if necessary. + */ +static struct nfs_page * nfs_setup_write_request(struct nfs_open_context* ctx, + struct page *page, unsigned int offset, unsigned int bytes) +{ + struct inode *inode = page->mapping->host; + struct nfs_page *req; + int error; + + req = nfs_try_to_update_request(inode, page, offset, bytes); + if (req != NULL) + goto out; + req = nfs_create_request(ctx, inode, page, offset, bytes); + if (IS_ERR(req)) + goto out; + error = nfs_inode_add_request(inode, req); + if (error != 0) { + nfs_release_request(req); + req = ERR_PTR(error); + } +out: return req; } +static int nfs_writepage_setup(struct nfs_open_context *ctx, struct page *page, + unsigned int offset, unsigned int count) +{ + struct nfs_page *req; + + req = nfs_setup_write_request(ctx, page, offset, count); + if (IS_ERR(req)) + return PTR_ERR(req); + /* Update file length */ + nfs_grow_file(page, offset, count); + nfs_mark_uptodate(page, req->wb_pgbase, req->wb_bytes); + nfs_clear_page_tag_locked(req); + return 0; +} + int nfs_flush_incompatible(struct file *file, struct page *page) { struct nfs_open_context *ctx = nfs_file_open_context(file); @@ -685,8 +685,7 @@ int nfs_flush_incompatible(struct file *file, struct page *page) req = nfs_page_find_request(page); if (req == NULL) return 0; - do_flush = req->wb_page != page || req->wb_context != ctx - || !nfs_dirty_request(req); + do_flush = req->wb_page != page || req->wb_context != ctx; nfs_release_request(req); if (!do_flush) return 0; @@ -721,10 +720,10 @@ int nfs_updatepage(struct file *file, struct page *page, nfs_inc_stats(inode, NFSIOS_VFSUPDATEPAGE); - dprintk("NFS: nfs_updatepage(%s/%s %d@%Ld)\n", + dprintk("NFS: nfs_updatepage(%s/%s %d@%lld)\n", file->f_path.dentry->d_parent->d_name.name, file->f_path.dentry->d_name.name, count, - (long long)(page_offset(page) +offset)); + (long long)(page_offset(page) + offset)); /* If we're not using byte range locks, and we know the page * is up to date, it may be more efficient to extend the write @@ -744,7 +743,7 @@ int nfs_updatepage(struct file *file, struct page *page, else __set_page_dirty_nobuffers(page); - dprintk("NFS: nfs_updatepage returns %d (isize %Ld)\n", + dprintk("NFS: nfs_updatepage returns %d (isize %lld)\n", status, (long long)i_size_read(inode)); return status; } @@ -752,12 +751,7 @@ int nfs_updatepage(struct file *file, struct page *page, static void nfs_writepage_release(struct nfs_page *req) { - if (PageError(req->wb_page)) { - nfs_end_page_writeback(req->wb_page); - nfs_inode_remove_request(req); - } else if (!nfs_reschedule_unstable_write(req)) { - /* Set the PG_uptodate flag */ - nfs_mark_uptodate(req->wb_page, req->wb_pgbase, req->wb_bytes); + if (PageError(req->wb_page) || !nfs_reschedule_unstable_write(req)) { nfs_end_page_writeback(req->wb_page); nfs_inode_remove_request(req); } else @@ -834,7 +828,7 @@ static int nfs_write_rpcsetup(struct nfs_page *req, NFS_PROTO(inode)->write_setup(data, &msg); dprintk("NFS: %5u initiated write call " - "(req %s/%Ld, %u bytes @ offset %Lu)\n", + "(req %s/%lld, %u bytes @ offset %llu)\n", data->task.tk_pid, inode->i_sb->s_id, (long long)NFS_FILEID(inode), @@ -978,13 +972,13 @@ static void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, static void nfs_writeback_done_partial(struct rpc_task *task, void *calldata) { struct nfs_write_data *data = calldata; - struct nfs_page *req = data->req; - dprintk("NFS: write (%s/%Ld %d@%Ld)", - req->wb_context->path.dentry->d_inode->i_sb->s_id, - (long long)NFS_FILEID(req->wb_context->path.dentry->d_inode), - req->wb_bytes, - (long long)req_offset(req)); + dprintk("NFS: %5u write(%s/%lld %d@%lld)", + task->tk_pid, + data->req->wb_context->path.dentry->d_inode->i_sb->s_id, + (long long) + NFS_FILEID(data->req->wb_context->path.dentry->d_inode), + data->req->wb_bytes, (long long)req_offset(data->req)); nfs_writeback_done(task, data); } @@ -1058,7 +1052,8 @@ static void nfs_writeback_release_full(void *calldata) nfs_list_remove_request(req); - dprintk("NFS: write (%s/%Ld %d@%Ld)", + dprintk("NFS: %5u write (%s/%lld %d@%lld)", + data->task.tk_pid, req->wb_context->path.dentry->d_inode->i_sb->s_id, (long long)NFS_FILEID(req->wb_context->path.dentry->d_inode), req->wb_bytes, @@ -1078,8 +1073,6 @@ static void nfs_writeback_release_full(void *calldata) dprintk(" marked for commit\n"); goto next; } - /* Set the PG_uptodate flag? */ - nfs_mark_uptodate(page, req->wb_pgbase, req->wb_bytes); dprintk(" OK\n"); remove_request: nfs_end_page_writeback(page); @@ -1133,7 +1126,7 @@ int nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data) static unsigned long complain; if (time_before(complain, jiffies)) { - dprintk("NFS: faulty NFS server %s:" + dprintk("NFS: faulty NFS server %s:" " (committed = %d) != (stable = %d)\n", NFS_SERVER(data->inode)->nfs_client->cl_hostname, resp->verf->committed, argp->stable); @@ -1297,12 +1290,9 @@ static void nfs_commit_release(void *calldata) while (!list_empty(&data->pages)) { req = nfs_list_entry(data->pages.next); nfs_list_remove_request(req); - clear_bit(PG_NEED_COMMIT, &(req)->wb_flags); - dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); - dec_bdi_stat(req->wb_page->mapping->backing_dev_info, - BDI_RECLAIMABLE); + nfs_clear_request_commit(req); - dprintk("NFS: commit (%s/%Ld %d@%Ld)", + dprintk("NFS: commit (%s/%lld %d@%lld)", req->wb_context->path.dentry->d_inode->i_sb->s_id, (long long)NFS_FILEID(req->wb_context->path.dentry->d_inode), req->wb_bytes, @@ -1318,9 +1308,6 @@ static void nfs_commit_release(void *calldata) * returned by the server against all stored verfs. */ if (!memcmp(req->wb_verf.verifier, data->verf.verifier, sizeof(data->verf.verifier))) { /* We have a match */ - /* Set the PG_uptodate flag */ - nfs_mark_uptodate(req->wb_page, req->wb_pgbase, - req->wb_bytes); nfs_inode_remove_request(req); dprintk(" OK\n"); goto next; @@ -1479,7 +1466,7 @@ int nfs_wb_page_cancel(struct inode *inode, struct page *page) req = nfs_page_find_request(page); if (req == NULL) goto out; - if (test_bit(PG_NEED_COMMIT, &req->wb_flags)) { + if (test_bit(PG_CLEAN, &req->wb_flags)) { nfs_release_request(req); break; } diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 4d4760e687c3..702fa577aa6e 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -381,7 +381,7 @@ static int do_probe_callback(void *data) .program = &cb_program, .version = nfs_cb_version[1]->number, .authflavor = RPC_AUTH_UNIX, /* XXX: need AUTH_GSS... */ - .flags = (RPC_CLNT_CREATE_NOPING), + .flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET), }; struct rpc_message msg = { .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL], |