nfs_fs.h revision 51d8fa6a109589d522c18a8e9bf3fb167a91b1bc
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/include/linux/nfs_fs.h 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 1992 Rick Sladkey 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * OS-specific nfs filesystem definitions and declarations 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifndef _LINUX_NFS_FS_H 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define _LINUX_NFS_FS_H 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/config.h> 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/in.h> 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mm.h> 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/pagemap.h> 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/rwsem.h> 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/wait.h> 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sunrpc/debug.h> 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sunrpc/auth.h> 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sunrpc/clnt.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/nfs.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/nfs2.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/nfs3.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/nfs4.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/nfs_xdr.h> 288b4bdcf8995dd92b23d2ec22b32aee8fbbb50e1cTrond Myklebust 298b4bdcf8995dd92b23d2ec22b32aee8fbbb50e1cTrond Myklebust#include <linux/nfs_fs_sb.h> 308b4bdcf8995dd92b23d2ec22b32aee8fbbb50e1cTrond Myklebust 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/rwsem.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mempool.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Enable debugging support for nfs client. 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Requires RPC_DEBUG. 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef RPC_DEBUG 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# define NFS_DEBUG 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4203bf4b707eee06706c9db343dd5c905b7ee47ed2Chuck Lever/* Default timeout values */ 4303bf4b707eee06706c9db343dd5c905b7ee47ed2Chuck Lever#define NFS_MAX_UDP_TIMEOUT (60*HZ) 4403bf4b707eee06706c9db343dd5c905b7ee47ed2Chuck Lever#define NFS_MAX_TCP_TIMEOUT (600*HZ) 4503bf4b707eee06706c9db343dd5c905b7ee47ed2Chuck Lever 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * superblock magic number for NFS 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_SUPER_MAGIC 0x6969 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * These are the default flags for swap requests 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * When flushing a cluster of dirty pages, there can be different 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * strategies: 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FLUSH_SYNC 1 /* file being synced, or contention */ 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FLUSH_STABLE 4 /* commit to stable storage */ 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FLUSH_LOWPRI 8 /* low priority background flush */ 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FLUSH_HIGHPRI 16 /* high priority memory reclaim flush */ 6470b9ecbdb9c5fdc731f8780bffd45d9519020c4aTrond Myklebust#define FLUSH_NOCOMMIT 32 /* Don't send the NFSv3/v4 COMMIT */ 65d2ccddf042c403b146159beea438c6bfc4a445e2Trond Myklebust#define FLUSH_INVALIDATE 64 /* Invalidate the page cache */ 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __KERNEL__ 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NFSv3/v4 Access mode cache entry 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs_access_entry { 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long jiffies; 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_cred * cred; 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int mask; 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs4_state; 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs_open_context { 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_t count; 81b92dccf65bab3b6b7deb79ff3321dc256eb0f53bTrond Myklebust struct vfsmount *vfsmnt; 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dentry *dentry; 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_cred *cred; 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs4_state *state; 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fl_owner_t lockowner; 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int mode; 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error; 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head list; 9000a926422765064cb28e218d4837411c88bf6a3eOlivier Galibert 9100a926422765064cb28e218d4837411c88bf6a3eOlivier Galibert __u64 dir_cookie; 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NFSv4 delegation 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs_delegation; 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 995c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacherstruct posix_acl; 1005c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * nfs fs inode data in memory 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs_inode { 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The 64bit 'inode number' 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u64 fileid; 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NFS file handle 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_fh fh; 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Various flags 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 118412d582ec1dd59aab2353f8cb7e74f2c79cd20b9Chuck Lever unsigned long flags; /* atomic bit ops */ 119412d582ec1dd59aab2353f8cb7e74f2c79cd20b9Chuck Lever unsigned long cache_validity; /* bit mask */ 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12224bd68f46b1ad08d69bf32779f860df867780a7aGoldwyn Rodrigues * read_cache_jiffies is when we started read-caching this inode. 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * attrtimeo is for how long the cached information is assumed 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to be valid. A successful attribute revalidation doubles 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * attrtimeo (up to acregmax/acdirmax), a failure resets it to 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * acregmin/acdirmin. 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We need to revalidate the cached attrs for this inode if 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * jiffies - read_cache_jiffies > attrtimeo 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long read_cache_jiffies; 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long attrtimeo; 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long attrtimeo_timestamp; 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u64 change_attr; /* v4 only */ 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13733801147a8fda6b04d7e9afe1d42f1c01d3d6837Trond Myklebust unsigned long last_updated; 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* "Generation counter" for the attribute cache. This is 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * bumped whenever we update the metadata on the 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * server. 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long cache_change_attribute; 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Counter indicating the number of outstanding requests that 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will cause a file data update. 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_t data_updates; 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_access_entry cache_access; 1505c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher#ifdef CONFIG_NFS_V3_ACL 1515c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher struct posix_acl *acl_access; 1525c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher struct posix_acl *acl_default; 1535c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher#endif 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is the cookie verifier used for NFSv3 readdir 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * operations 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 cookieverf[2]; 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is the list of dirty unwritten pages. 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t req_lock; 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head dirty; 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head commit; 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct radix_tree_root nfs_page_tree; 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int ndirty, 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ncommit, 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds npages; 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Open contexts for shared mmap writes */ 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head open_files; 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_NFS_V4 177e50a1c2e1f816c81eed6a589019052cb44189267J. Bruce Fields struct nfs4_cached_acl *nfs4_acl; 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NFSv4 state */ 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head open_states; 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_delegation *delegation; 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int delegation_state; 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rw_semaphore rwsem; 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_NFS_V4*/ 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode vfs_inode; 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1885529680981807b44abf3be30fb6d612ff04f68ffChuck Lever * Cache validity bit flags 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1905529680981807b44abf3be30fb6d612ff04f68ffChuck Lever#define NFS_INO_INVALID_ATTR 0x0001 /* cached attrs are invalid */ 1915529680981807b44abf3be30fb6d612ff04f68ffChuck Lever#define NFS_INO_INVALID_DATA 0x0002 /* cached data is invalid */ 1925529680981807b44abf3be30fb6d612ff04f68ffChuck Lever#define NFS_INO_INVALID_ATIME 0x0004 /* cached atime is invalid */ 1935529680981807b44abf3be30fb6d612ff04f68ffChuck Lever#define NFS_INO_INVALID_ACCESS 0x0008 /* cached access cred invalid */ 1945529680981807b44abf3be30fb6d612ff04f68ffChuck Lever#define NFS_INO_INVALID_ACL 0x0010 /* cached acls are invalid */ 1955529680981807b44abf3be30fb6d612ff04f68ffChuck Lever#define NFS_INO_REVAL_PAGECACHE 0x0020 /* must revalidate pagecache */ 1965529680981807b44abf3be30fb6d612ff04f68ffChuck Lever 1975529680981807b44abf3be30fb6d612ff04f68ffChuck Lever/* 198412d582ec1dd59aab2353f8cb7e74f2c79cd20b9Chuck Lever * Bit offsets in flags field 1995529680981807b44abf3be30fb6d612ff04f68ffChuck Lever */ 200412d582ec1dd59aab2353f8cb7e74f2c79cd20b9Chuck Lever#define NFS_INO_REVALIDATING (0) /* revalidating attrs */ 201412d582ec1dd59aab2353f8cb7e74f2c79cd20b9Chuck Lever#define NFS_INO_ADVISE_RDPLUS (1) /* advise readdirplus */ 202412d582ec1dd59aab2353f8cb7e74f2c79cd20b9Chuck Lever#define NFS_INO_STALE (2) /* possible stale inode */ 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct nfs_inode *NFS_I(struct inode *inode) 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of(inode, struct nfs_inode, vfs_inode); 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_SB(s) ((struct nfs_server *)(s->s_fs_info)) 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_FH(inode) (&NFS_I(inode)->fh) 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_SERVER(inode) (NFS_SB(inode->i_sb)) 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_CLIENT(inode) (NFS_SERVER(inode)->client) 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_PROTO(inode) (NFS_SERVER(inode)->rpc_ops) 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_ADDR(inode) (RPC_PEERADDR(NFS_CLIENT(inode))) 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_COOKIEVERF(inode) (NFS_I(inode)->cookieverf) 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_READTIME(inode) (NFS_I(inode)->read_cache_jiffies) 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_CHANGE_ATTR(inode) (NFS_I(inode)->change_attr) 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_ATTRTIMEO(inode) (NFS_I(inode)->attrtimeo) 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_MINATTRTIMEO(inode) \ 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmin \ 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds : NFS_SERVER(inode)->acregmin) 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_MAXATTRTIMEO(inode) \ 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmax \ 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds : NFS_SERVER(inode)->acregmax) 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_ATTRTIMEO_UPDATE(inode) (NFS_I(inode)->attrtimeo_timestamp) 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_FLAGS(inode) (NFS_I(inode)->flags) 228412d582ec1dd59aab2353f8cb7e74f2c79cd20b9Chuck Lever#define NFS_STALE(inode) (test_bit(NFS_INO_STALE, &NFS_FLAGS(inode))) 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_FILEID(inode) (NFS_I(inode)->fileid) 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int nfs_caches_unstable(struct inode *inode) 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return atomic_read(&NFS_I(inode)->data_updates) != 0; 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 237decf491f3076190262d4c649bed877650623903aTrond Myklebuststatic inline void nfs_mark_for_revalidate(struct inode *inode) 238decf491f3076190262d4c649bed877650623903aTrond Myklebust{ 23938478b24e37587f1c4fedf8ac070ca54f052ed28Trond Myklebust struct nfs_inode *nfsi = NFS_I(inode); 24038478b24e37587f1c4fedf8ac070ca54f052ed28Trond Myklebust 241decf491f3076190262d4c649bed877650623903aTrond Myklebust spin_lock(&inode->i_lock); 24238478b24e37587f1c4fedf8ac070ca54f052ed28Trond Myklebust nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS; 24338478b24e37587f1c4fedf8ac070ca54f052ed28Trond Myklebust if (S_ISDIR(inode->i_mode)) 24438478b24e37587f1c4fedf8ac070ca54f052ed28Trond Myklebust nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; 245decf491f3076190262d4c649bed877650623903aTrond Myklebust spin_unlock(&inode->i_lock); 246decf491f3076190262d4c649bed877650623903aTrond Myklebust} 247decf491f3076190262d4c649bed877650623903aTrond Myklebust 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void NFS_CACHEINV(struct inode *inode) 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 250decf491f3076190262d4c649bed877650623903aTrond Myklebust if (!nfs_caches_unstable(inode)) 251decf491f3076190262d4c649bed877650623903aTrond Myklebust nfs_mark_for_revalidate(inode); 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int nfs_server_capable(struct inode *inode, int cap) 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NFS_SERVER(inode)->caps & cap; 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int NFS_USE_READDIRPLUS(struct inode *inode) 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 261412d582ec1dd59aab2353f8cb7e74f2c79cd20b9Chuck Lever return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode)); 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * nfs_save_change_attribute - Returns the inode attribute change cookie 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @inode - pointer to inode 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The "change attribute" is updated every time we finish an operation 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that will result in a metadata change on the server. 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline long nfs_save_change_attribute(struct inode *inode) 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NFS_I(inode)->cache_change_attribute; 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * nfs_verify_change_attribute - Detects NFS inode cache updates 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @inode - pointer to inode 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @chattr - previously saved change attribute 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Return "false" if metadata has been updated (or is in the process of 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * being updated) since the change attribute was saved. 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int nfs_verify_change_attribute(struct inode *inode, unsigned long chattr) 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return !nfs_caches_unstable(inode) 285913a70fc170530f7e1ff0693595155457cc6d0caTrond Myklebust && time_after_eq(chattr, NFS_I(inode)->cache_change_attribute); 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/inode.c 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 29129884df0d89c1df0dec3449405bc41569bb44800Trond Myklebustextern int nfs_sync_mapping(struct address_space *mapping); 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_zap_caches(struct inode *); 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *, 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_fattr *); 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); 296decf491f3076190262d4c649bed877650623903aTrond Myklebustextern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr); 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_permission(struct inode *, int, struct nameidata *); 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_access_get_cached(struct inode *, struct rpc_cred *, struct nfs_access_entry *); 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *); 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_open(struct inode *, struct file *); 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_release(struct inode *, struct file *); 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_attribute_timeout(struct inode *inode); 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode); 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int __nfs_revalidate_inode(struct nfs_server *, struct inode *); 30644b11874ff583b6e766a05856b04f3c492c32b84Trond Myklebustextern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping); 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_setattr(struct dentry *, struct iattr *); 30865e4308d2500e7daf60c3dccc202c61ffb066c63Trond Myklebustextern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr); 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_begin_attr_update(struct inode *); 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_end_attr_update(struct inode *); 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_begin_data_update(struct inode *); 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_end_data_update(struct inode *); 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx); 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void put_nfs_open_context(struct nfs_open_context *ctx); 315d530838bfa507d67b40d13b00d9cbd7a46a47e78Trond Myklebustextern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode); 31655a975937d40cac582e981ddc8ed783b3dcc043cTrond Myklebustextern struct vfsmount *nfs_do_submount(const struct vfsmount *mnt_parent, 31755a975937d40cac582e981ddc8ed783b3dcc043cTrond Myklebust const struct dentry *dentry, 31855a975937d40cac582e981ddc8ed783b3dcc043cTrond Myklebust struct nfs_fh *fh, 31955a975937d40cac582e981ddc8ed783b3dcc043cTrond Myklebust struct nfs_fattr *fattr); 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */ 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern u32 root_nfs_parse_addr(char *name); /*__init*/ 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3240e574af1be5f569a5d7f2800333b0bfb358a5e34Trond Myklebuststatic inline void nfs_fattr_init(struct nfs_fattr *fattr) 3250e574af1be5f569a5d7f2800333b0bfb358a5e34Trond Myklebust{ 3260e574af1be5f569a5d7f2800333b0bfb358a5e34Trond Myklebust fattr->valid = 0; 32733801147a8fda6b04d7e9afe1d42f1c01d3d6837Trond Myklebust fattr->time_start = jiffies; 3280e574af1be5f569a5d7f2800333b0bfb358a5e34Trond Myklebust} 3290e574af1be5f569a5d7f2800333b0bfb358a5e34Trond Myklebust 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/file.c 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct inode_operations nfs_file_inode_operations; 334b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#ifdef CONFIG_NFS_V3 335b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern struct inode_operations nfs3_file_inode_operations; 336b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#endif /* CONFIG_NFS_V3 */ 3374b6f5d20b04dcbc3d888555522b90ba6d36c4106Arjan van de Venextern const struct file_operations nfs_file_operations; 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct address_space_operations nfs_file_aops; 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct rpc_cred *nfs_file_cred(struct file *file) 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (file != NULL) { 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_open_context *ctx; 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctx = (struct nfs_open_context*)file->private_data; 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ctx->cred; 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 352b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher * linux/fs/nfs/xattr.c 353b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher */ 354b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#ifdef CONFIG_NFS_V3_ACL 355b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern ssize_t nfs3_listxattr(struct dentry *, char *, size_t); 356b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern ssize_t nfs3_getxattr(struct dentry *, const char *, void *, size_t); 357b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern int nfs3_setxattr(struct dentry *, const char *, 358b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher const void *, size_t, int); 359b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern int nfs3_removexattr (struct dentry *, const char *name); 360b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#else 361b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher# define nfs3_listxattr NULL 362b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher# define nfs3_getxattr NULL 363b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher# define nfs3_setxattr NULL 364b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher# define nfs3_removexattr NULL 365b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#endif 366b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher 367b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher/* 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/direct.c 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t, 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long); 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern ssize_t nfs_file_direct_read(struct kiocb *iocb, char __user *buf, 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t count, loff_t pos); 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern ssize_t nfs_file_direct_write(struct kiocb *iocb, const char __user *buf, 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t count, loff_t pos); 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/dir.c 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct inode_operations nfs_dir_inode_operations; 381b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#ifdef CONFIG_NFS_V3 382b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern struct inode_operations nfs3_dir_inode_operations; 383b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#endif /* CONFIG_NFS_V3 */ 3844b6f5d20b04dcbc3d888555522b90ba6d36c4106Arjan van de Venextern const struct file_operations nfs_dir_operations; 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct dentry_operations nfs_dentry_operations; 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr); 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/symlink.c 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct inode_operations nfs_symlink_inode_operations; 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 395a72b44222d222749d54b3e370d825094352e389fTrond Myklebust * linux/fs/nfs/sysctl.c 396a72b44222d222749d54b3e370d825094352e389fTrond Myklebust */ 397a72b44222d222749d54b3e370d825094352e389fTrond Myklebust#ifdef CONFIG_SYSCTL 398a72b44222d222749d54b3e370d825094352e389fTrond Myklebustextern int nfs_register_sysctl(void); 399a72b44222d222749d54b3e370d825094352e389fTrond Myklebustextern void nfs_unregister_sysctl(void); 400a72b44222d222749d54b3e370d825094352e389fTrond Myklebust#else 4017fd105e758c8d746d57ab7e77f100e096bf153c8Stephen Rothwell#define nfs_register_sysctl() 0 402a72b44222d222749d54b3e370d825094352e389fTrond Myklebust#define nfs_unregister_sysctl() do { } while(0) 403a72b44222d222749d54b3e370d825094352e389fTrond Myklebust#endif 404a72b44222d222749d54b3e370d825094352e389fTrond Myklebust 405a72b44222d222749d54b3e370d825094352e389fTrond Myklebust/* 40655a975937d40cac582e981ddc8ed783b3dcc043cTrond Myklebust * linux/fs/nfs/namespace.c 40755a975937d40cac582e981ddc8ed783b3dcc043cTrond Myklebust */ 40851d8fa6a109589d522c18a8e9bf3fb167a91b1bcTrond Myklebustextern struct list_head nfs_automount_list; 40955a975937d40cac582e981ddc8ed783b3dcc043cTrond Myklebustextern struct inode_operations nfs_mountpoint_inode_operations; 41051d8fa6a109589d522c18a8e9bf3fb167a91b1bcTrond Myklebustextern int nfs_mountpoint_expiry_timeout; 41151d8fa6a109589d522c18a8e9bf3fb167a91b1bcTrond Myklebustextern void nfs_release_automount_timer(void); 41255a975937d40cac582e981ddc8ed783b3dcc043cTrond Myklebust 41355a975937d40cac582e981ddc8ed783b3dcc043cTrond Myklebust/* 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/unlink.c 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_async_unlink(struct dentry *); 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_complete_unlink(struct dentry *); 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/write.c 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_writepage(struct page *page, struct writeback_control *wbc); 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_writepages(struct address_space *, struct writeback_control *); 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_flush_incompatible(struct file *file, struct page *page); 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); 426462d5b3296b56289efec426499a83faad4c08d9eChuck Leverextern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); 427462d5b3296b56289efec426499a83faad4c08d9eChuck Leverextern void nfs_writedata_release(void *); 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 429e17b1fc4b35399935f00a635206e183d9292fe4fTrond Myklebust#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) 430e17b1fc4b35399935f00a635206e183d9292fe4fTrond Myklebuststruct nfs_write_data *nfs_commit_alloc(unsigned int pagecount); 431e17b1fc4b35399935f00a635206e183d9292fe4fTrond Myklebustvoid nfs_commit_free(struct nfs_write_data *p); 432e17b1fc4b35399935f00a635206e183d9292fe4fTrond Myklebust#endif 433e17b1fc4b35399935f00a635206e183d9292fe4fTrond Myklebust 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Try to write back everything synchronously (but check the 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return value!) 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 438c42de9dd67250fe984e0e31c9b542d721af6454bTrond Myklebustextern int nfs_sync_inode_wait(struct inode *, unsigned long, unsigned int, int); 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) 4403da28eb1c6545fe73263a24eba0996217490e1ebTrond Myklebustextern int nfs_commit_inode(struct inode *, int); 441fad61490419b3e494f300e9b2579810ef3bcda31Trond Myklebustextern void nfs_commit_release(void *wdata); 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 4443da28eb1c6545fe73263a24eba0996217490e1ebTrond Myklebustnfs_commit_inode(struct inode *inode, int how) 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsnfs_have_writebacks(struct inode *inode) 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NFS_I(inode)->npages != 0; 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsnfs_wb_all(struct inode *inode) 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 459c42de9dd67250fe984e0e31c9b542d721af6454bTrond Myklebust int error = nfs_sync_inode_wait(inode, 0, 0, 0); 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (error < 0) ? error : 0; 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Write back all requests on one page - we do this before reading it. 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int nfs_wb_page_priority(struct inode *inode, struct page* page, int how) 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 468c42de9dd67250fe984e0e31c9b542d721af6454bTrond Myklebust int error = nfs_sync_inode_wait(inode, page->index, 1, 469c42de9dd67250fe984e0e31c9b542d721af6454bTrond Myklebust how | FLUSH_STABLE); 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (error < 0) ? error : 0; 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int nfs_wb_page(struct inode *inode, struct page* page) 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return nfs_wb_page_priority(inode, page, 0); 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Allocate and free nfs_write_data structures 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4813feb2d49394b7874348a6e43c076b780c1d222c5Trond Myklebustextern struct nfs_write_data *nfs_writedata_alloc(unsigned int pagecount); 4823feb2d49394b7874348a6e43c076b780c1d222c5Trond Myklebustextern void nfs_writedata_free(struct nfs_write_data *p); 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/read.c 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_readpage(struct file *, struct page *); 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_readpages(struct file *, struct address_space *, 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head *, unsigned); 490ec06c096edec0755534c7126f4caded69de131c2Trond Myklebustextern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *); 491ec06c096edec0755534c7126f4caded69de131c2Trond Myklebustextern void nfs_readdata_release(void *data); 492963d8fe53339128ee46a7701f2e36305f0ccff8cTrond Myklebust 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Allocate and free nfs_read_data structures 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4963feb2d49394b7874348a6e43c076b780c1d222c5Trond Myklebustextern struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount); 4973feb2d49394b7874348a6e43c076b780c1d222c5Trond Myklebustextern void nfs_readdata_free(struct nfs_read_data *p); 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 500b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher * linux/fs/nfs3proc.c 501b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher */ 502b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#ifdef CONFIG_NFS_V3_ACL 503b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type); 504b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern int nfs3_proc_setacl(struct inode *inode, int type, 505b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher struct posix_acl *acl); 506055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacherextern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, 507055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher mode_t mode); 5085c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacherextern void nfs3_forget_cached_acls(struct inode *inode); 509055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher#else 510055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacherstatic inline int nfs3_proc_set_default_acl(struct inode *dir, 511055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher struct inode *inode, 512055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher mode_t mode) 513055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher{ 514055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher return 0; 515055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher} 5165c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher 5175c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacherstatic inline void nfs3_forget_cached_acls(struct inode *inode) 5185c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher{ 5195c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher} 520b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#endif /* CONFIG_NFS_V3_ACL */ 521b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher 522b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher/* 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/mount_clnt.c 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (Used only by nfsroot module) 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfsroot_mount(struct sockaddr_in *, char *, struct nfs_fh *, 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int, int); 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * inline functions 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline loff_t 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsnfs_size_to_loff_t(__u64 size) 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds loff_t maxsz = (((loff_t) ULONG_MAX) << PAGE_CACHE_SHIFT) + PAGE_CACHE_SIZE - 1; 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (size > maxsz) 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return maxsz; 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (loff_t) size; 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline ino_t 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsnfs_fileid_to_ino_t(u64 fileid) 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ino_t ino = (ino_t) fileid; 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sizeof(ino_t) < sizeof(u64)) 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8; 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ino; 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* NFS root */ 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void * nfs_root_data(void); 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define nfs_wait_event(clnt, wq, condition) \ 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds({ \ 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int __retval = 0; \ 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clnt->cl_intr) { \ 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sigset_t oldmask; \ 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rpc_clnt_sigmask(clnt, &oldmask); \ 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __retval = wait_event_interruptible(wq, condition); \ 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rpc_clnt_sigunmask(clnt, &oldmask); \ 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else \ 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_event(wq, condition); \ 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __retval; \ 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}) 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_JUKEBOX_RETRY_TIME (5 * HZ) 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* __KERNEL__ */ 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NFS debug flags 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_VFS 0x0001 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_DIRCACHE 0x0002 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_LOOKUPCACHE 0x0004 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_PAGECACHE 0x0008 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_PROC 0x0010 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_XDR 0x0020 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_FILE 0x0040 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_ROOT 0x0080 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_CALLBACK 0x0100 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_ALL 0xFFFF 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __KERNEL__ 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# undef ifdebug 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# ifdef NFS_DEBUG 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac)) 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# else 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# define ifdebug(fac) if (0) 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# endif 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* __KERNEL */ 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 596