nfs_fs.h revision b608b283a962caaa280756bc8563016a71712acf
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 12e18fa700c9a31360bc8f193aa543b7ef7b39a06bJeff Garzik#include <linux/magic.h> 13e18fa700c9a31360bc8f193aa543b7ef7b39a06bJeff Garzik 1403bf4b707eee06706c9db343dd5c905b7ee47ed2Chuck Lever/* Default timeout values */ 15259875efed06d6936f54c9a264e868937f1bc217Trond Myklebust#define NFS_DEF_UDP_TIMEO (11) 16259875efed06d6936f54c9a264e868937f1bc217Trond Myklebust#define NFS_DEF_UDP_RETRANS (3) 17259875efed06d6936f54c9a264e868937f1bc217Trond Myklebust#define NFS_DEF_TCP_TIMEO (600) 18259875efed06d6936f54c9a264e868937f1bc217Trond Myklebust#define NFS_DEF_TCP_RETRANS (2) 19259875efed06d6936f54c9a264e868937f1bc217Trond Myklebust 2003bf4b707eee06706c9db343dd5c905b7ee47ed2Chuck Lever#define NFS_MAX_UDP_TIMEOUT (60*HZ) 2103bf4b707eee06706c9db343dd5c905b7ee47ed2Chuck Lever#define NFS_MAX_TCP_TIMEOUT (600*HZ) 2203bf4b707eee06706c9db343dd5c905b7ee47ed2Chuck Lever 230e0cab744b17a70ef0f08d818d66935feade7cadChuck Lever#define NFS_DEF_ACREGMIN (3) 240e0cab744b17a70ef0f08d818d66935feade7cadChuck Lever#define NFS_DEF_ACREGMAX (60) 250e0cab744b17a70ef0f08d818d66935feade7cadChuck Lever#define NFS_DEF_ACDIRMIN (30) 260e0cab744b17a70ef0f08d818d66935feade7cadChuck Lever#define NFS_DEF_ACDIRMAX (60) 270e0cab744b17a70ef0f08d818d66935feade7cadChuck Lever 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * When flushing a cluster of dirty pages, there can be different 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * strategies: 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FLUSH_SYNC 1 /* file being synced, or contention */ 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FLUSH_STABLE 4 /* commit to stable storage */ 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FLUSH_LOWPRI 8 /* low priority background flush */ 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FLUSH_HIGHPRI 16 /* high priority memory reclaim flush */ 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __KERNEL__ 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 397f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/in.h> 407f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/mm.h> 417f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/pagemap.h> 421c3c07e9f6cc50dab2aeb8051325e317d4f6c70eTrond Myklebust#include <linux/rbtree.h> 437f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/rwsem.h> 447f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/wait.h> 457f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse 467f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/sunrpc/debug.h> 477f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/sunrpc/auth.h> 487f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/sunrpc/clnt.h> 497f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse 507f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/nfs.h> 517f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/nfs2.h> 527f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/nfs3.h> 537f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/nfs4.h> 547f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/nfs_xdr.h> 557f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/nfs_fs_sb.h> 567f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse 577f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#include <linux/mempool.h> 587f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse 597f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse/* 607f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse * These are the default flags for swap requests 617f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse */ 627f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse#define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) 637f1cbe51ffc1273bcded36742ede4b6ebef1b640David Woodhouse 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NFSv3/v4 Access mode cache entry 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs_access_entry { 681c3c07e9f6cc50dab2aeb8051325e317d4f6c70eTrond Myklebust struct rb_node rb_node; 69cfcea3e8c66c2dcde98d5c2693d4bff50b5cac97Trond Myklebust struct list_head lru; 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long jiffies; 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_cred * cred; 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int mask; 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs4_state; 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs_open_context { 775e11934d13c9a3bcb0cadad6c7a7de5c32660422Trond Myklebust atomic_t count; 7888be9f990fe70f0f177ef44a16a477599e91f825Trond Myklebust struct path path; 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_cred *cred; 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs4_state *state; 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fl_owner_t lockowner; 82dc0b027dfadfcb8a5504f7d8052754bf8d501ab9Trond Myklebust fmode_t mode; 837b159fc18d417980f57aef64cab3417ee6af70f8Trond Myklebust 847b159fc18d417980f57aef64cab3417ee6af70f8Trond Myklebust unsigned long flags; 857b159fc18d417980f57aef64cab3417ee6af70f8Trond Myklebust#define NFS_CONTEXT_ERROR_WRITE (0) 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error; 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head list; 8900a926422765064cb28e218d4837411c88bf6a3eOlivier Galibert 9000a926422765064cb28e218d4837411c88bf6a3eOlivier Galibert __u64 dir_cookie; 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NFSv4 delegation 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs_delegation; 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 985c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacherstruct posix_acl; 995c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * nfs fs inode data in memory 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs_inode { 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The 64bit 'inode number' 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u64 fileid; 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NFS file handle 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_fh fh; 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Various flags 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 117412d582ec1dd59aab2353f8cb7e74f2c79cd20b9Chuck Lever unsigned long flags; /* atomic bit ops */ 118412d582ec1dd59aab2353f8cb7e74f2c79cd20b9Chuck Lever unsigned long cache_validity; /* bit mask */ 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12124bd68f46b1ad08d69bf32779f860df867780a7aGoldwyn Rodrigues * read_cache_jiffies is when we started read-caching this inode. 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * attrtimeo is for how long the cached information is assumed 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to be valid. A successful attribute revalidation doubles 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * attrtimeo (up to acregmax/acdirmax), a failure resets it to 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * acregmin/acdirmin. 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We need to revalidate the cached attrs for this inode if 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 12964672d55d93c26fb4035fd1a84a803cbc09cb058Peter Staubach * jiffies - read_cache_jiffies >= attrtimeo 13064672d55d93c26fb4035fd1a84a803cbc09cb058Peter Staubach * 13164672d55d93c26fb4035fd1a84a803cbc09cb058Peter Staubach * Please note the comparison is greater than or equal 13264672d55d93c26fb4035fd1a84a803cbc09cb058Peter Staubach * so that zero timeout values can be specified. 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long read_cache_jiffies; 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long attrtimeo; 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long attrtimeo_timestamp; 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u64 change_attr; /* v4 only */ 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1394704f0e274829e3af00737d2d9adace2d71a9605Trond Myklebust unsigned long attr_gencount; 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* "Generation counter" for the attribute cache. This is 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * bumped whenever we update the metadata on the 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * server. 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long cache_change_attribute; 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1461c3c07e9f6cc50dab2aeb8051325e317d4f6c70eTrond Myklebust struct rb_root access_cache; 147cfcea3e8c66c2dcde98d5c2693d4bff50b5cac97Trond Myklebust struct list_head access_cache_entry_lru; 148cfcea3e8c66c2dcde98d5c2693d4bff50b5cac97Trond Myklebust struct list_head access_cache_inode_lru; 1495c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher#ifdef CONFIG_NFS_V3_ACL 1505c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher struct posix_acl *acl_access; 1515c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher struct posix_acl *acl_default; 1525c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher#endif 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is the cookie verifier used for NFSv3 readdir 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * operations 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 158bc4785cd475a11ba125df7af674e16c6ea1cfc30Al Viro __be32 cookieverf[2]; 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is the list of dirty unwritten pages. 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct radix_tree_root nfs_page_tree; 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 165fb8a1f11b64e213d94dfa1cebb2a42a7b8c115c4Trond Myklebust unsigned long npages; 166ff778d02bf867e1733a09b34ad6dbb723b024814Trond Myklebust unsigned long ncommit; 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Open contexts for shared mmap writes */ 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head open_files; 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 171565277f63c616e11c37309a1e98c052d18ebbb55Trond Myklebust /* Number of in-flight sillydelete RPC calls */ 172565277f63c616e11c37309a1e98c052d18ebbb55Trond Myklebust atomic_t silly_count; 173565277f63c616e11c37309a1e98c052d18ebbb55Trond Myklebust /* List of deferred sillydelete requests */ 174565277f63c616e11c37309a1e98c052d18ebbb55Trond Myklebust struct hlist_head silly_list; 175565277f63c616e11c37309a1e98c052d18ebbb55Trond Myklebust wait_queue_head_t waitqueue; 176565277f63c616e11c37309a1e98c052d18ebbb55Trond Myklebust 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_NFS_V4 178e50a1c2e1f816c81eed6a589019052cb44189267J. Bruce Fields struct nfs4_cached_acl *nfs4_acl; 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NFSv4 state */ 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head open_states; 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_delegation *delegation; 182bd7bf9d540c001055fba796ebf146d90e4dd2eb2Trond Myklebust fmode_t delegation_state; 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rw_semaphore rwsem; 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_NFS_V4*/ 185ef79c097bbe9724e13937271b3457df560e00370David Howells#ifdef CONFIG_NFS_FSCACHE 186ef79c097bbe9724e13937271b3457df560e00370David Howells struct fscache_cookie *fscache; 187ef79c097bbe9724e13937271b3457df560e00370David Howells#endif 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode vfs_inode; 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1925529680981807b44abf3be30fb6d612ff04f68ffChuck Lever * Cache validity bit flags 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1945529680981807b44abf3be30fb6d612ff04f68ffChuck Lever#define NFS_INO_INVALID_ATTR 0x0001 /* cached attrs are invalid */ 1955529680981807b44abf3be30fb6d612ff04f68ffChuck Lever#define NFS_INO_INVALID_DATA 0x0002 /* cached data is invalid */ 1965529680981807b44abf3be30fb6d612ff04f68ffChuck Lever#define NFS_INO_INVALID_ATIME 0x0004 /* cached atime is invalid */ 1975529680981807b44abf3be30fb6d612ff04f68ffChuck Lever#define NFS_INO_INVALID_ACCESS 0x0008 /* cached access cred invalid */ 1985529680981807b44abf3be30fb6d612ff04f68ffChuck Lever#define NFS_INO_INVALID_ACL 0x0010 /* cached acls are invalid */ 1995529680981807b44abf3be30fb6d612ff04f68ffChuck Lever#define NFS_INO_REVAL_PAGECACHE 0x0020 /* must revalidate pagecache */ 200412c77cee6d6e73fbe1dc3d67f52163efed33fc4Trond Myklebust#define NFS_INO_REVAL_FORCED 0x0040 /* force revalidation ignoring a delegation */ 2015529680981807b44abf3be30fb6d612ff04f68ffChuck Lever 2025529680981807b44abf3be30fb6d612ff04f68ffChuck Lever/* 203412d582ec1dd59aab2353f8cb7e74f2c79cd20b9Chuck Lever * Bit offsets in flags field 2045529680981807b44abf3be30fb6d612ff04f68ffChuck Lever */ 205691beb13cdc88358334ef0ba867c080a247a760fTrond Myklebust#define NFS_INO_ADVISE_RDPLUS (0) /* advise readdirplus */ 206691beb13cdc88358334ef0ba867c080a247a760fTrond Myklebust#define NFS_INO_STALE (1) /* possible stale inode */ 207691beb13cdc88358334ef0ba867c080a247a760fTrond Myklebust#define NFS_INO_ACL_LRU_SET (2) /* Inode is on the LRU list */ 208691beb13cdc88358334ef0ba867c080a247a760fTrond Myklebust#define NFS_INO_MOUNTPOINT (3) /* inode is remote mountpoint */ 20972cb77f4a5ace37b12dcb47a0e8637a2c28ad881Trond Myklebust#define NFS_INO_FLUSHING (4) /* inode is flushing out data */ 210ef79c097bbe9724e13937271b3457df560e00370David Howells#define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */ 211ef79c097bbe9724e13937271b3457df560e00370David Howells#define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */ 21271d0a6112a363e703e383ae5b12c492485c39701Trond Myklebust#define NFS_INO_COMMIT (7) /* inode is committing unstable writes */ 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21499fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevystatic inline struct nfs_inode *NFS_I(const struct inode *inode) 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of(inode, struct nfs_inode, vfs_inode); 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21899fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy 21999fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevystatic inline struct nfs_server *NFS_SB(const struct super_block *s) 22099fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy{ 22199fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy return (struct nfs_server *)(s->s_fs_info); 22299fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy} 22399fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy 22499fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevystatic inline struct nfs_fh *NFS_FH(const struct inode *inode) 22599fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy{ 22699fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy return &NFS_I(inode)->fh; 22799fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy} 22899fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy 22999fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevystatic inline struct nfs_server *NFS_SERVER(const struct inode *inode) 23099fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy{ 23199fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy return NFS_SB(inode->i_sb); 23299fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy} 23399fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy 23499fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevystatic inline struct rpc_clnt *NFS_CLIENT(const struct inode *inode) 23599fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy{ 23699fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy return NFS_SERVER(inode)->client; 23799fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy} 23899fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy 23999fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevystatic inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode) 24099fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy{ 24199fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy return NFS_SERVER(inode)->nfs_client->rpc_ops; 24299fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy} 24399fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy 24499fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevystatic inline __be32 *NFS_COOKIEVERF(const struct inode *inode) 24599fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy{ 24699fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy return NFS_I(inode)->cookieverf; 24799fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy} 24899fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy 24999fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevystatic inline unsigned NFS_MINATTRTIMEO(const struct inode *inode) 25099fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy{ 25199fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy struct nfs_server *nfss = NFS_SERVER(inode); 25299fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy return S_ISDIR(inode->i_mode) ? nfss->acdirmin : nfss->acregmin; 25399fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy} 25499fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy 25599fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevystatic inline unsigned NFS_MAXATTRTIMEO(const struct inode *inode) 25699fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy{ 25799fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy struct nfs_server *nfss = NFS_SERVER(inode); 25899fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy return S_ISDIR(inode->i_mode) ? nfss->acdirmax : nfss->acregmax; 25999fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy} 26099fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy 26199fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevystatic inline int NFS_STALE(const struct inode *inode) 26299fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy{ 26399fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags); 26499fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy} 26599fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy 266ef79c097bbe9724e13937271b3457df560e00370David Howellsstatic inline int NFS_FSCACHE(const struct inode *inode) 267ef79c097bbe9724e13937271b3457df560e00370David Howells{ 268ef79c097bbe9724e13937271b3457df560e00370David Howells return test_bit(NFS_INO_FSCACHE, &NFS_I(inode)->flags); 269ef79c097bbe9724e13937271b3457df560e00370David Howells} 270ef79c097bbe9724e13937271b3457df560e00370David Howells 27199fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevystatic inline __u64 NFS_FILEID(const struct inode *inode) 27299fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy{ 27399fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy return NFS_I(inode)->fileid; 27499fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy} 27599fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy 27699fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevystatic inline void set_nfs_fileid(struct inode *inode, __u64 fileid) 27799fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy{ 27899fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy NFS_I(inode)->fileid = fileid; 27999fadcd76465842c014c88b8c9c19b457e9debc0Benny Halevy} 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 281decf491f3076190262d4c649bed877650623903aTrond Myklebuststatic inline void nfs_mark_for_revalidate(struct inode *inode) 282decf491f3076190262d4c649bed877650623903aTrond Myklebust{ 28338478b24e37587f1c4fedf8ac070ca54f052ed28Trond Myklebust struct nfs_inode *nfsi = NFS_I(inode); 28438478b24e37587f1c4fedf8ac070ca54f052ed28Trond Myklebust 285decf491f3076190262d4c649bed877650623903aTrond Myklebust spin_lock(&inode->i_lock); 28638478b24e37587f1c4fedf8ac070ca54f052ed28Trond Myklebust nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS; 287f38211100d4823be530577dc3452f838861222ecTrond Myklebust if (S_ISDIR(inode->i_mode)) 28838478b24e37587f1c4fedf8ac070ca54f052ed28Trond Myklebust nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; 289decf491f3076190262d4c649bed877650623903aTrond Myklebust spin_unlock(&inode->i_lock); 290decf491f3076190262d4c649bed877650623903aTrond Myklebust} 291decf491f3076190262d4c649bed877650623903aTrond Myklebust 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int nfs_server_capable(struct inode *inode, int cap) 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NFS_SERVER(inode)->caps & cap; 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int NFS_USE_READDIRPLUS(struct inode *inode) 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2993a10c30acc4821ca000b52ed0edafd0d3bf26a52Benny Halevy return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags); 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 302d75340cc4de5c187fbf0bba234309ca86cf0a2fbTrond Myklebuststatic inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf) 303d75340cc4de5c187fbf0bba234309ca86cf0a2fbTrond Myklebust{ 304d75340cc4de5c187fbf0bba234309ca86cf0a2fbTrond Myklebust dentry->d_time = verf; 305d75340cc4de5c187fbf0bba234309ca86cf0a2fbTrond Myklebust} 306d75340cc4de5c187fbf0bba234309ca86cf0a2fbTrond Myklebust 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * nfs_save_change_attribute - Returns the inode attribute change cookie 3098edb01828837302055a8f0afddb2256659480bc5Trond Myklebust * @dir - pointer to parent directory inode 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The "change attribute" is updated every time we finish an operation 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that will result in a metadata change on the server. 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3138edb01828837302055a8f0afddb2256659480bc5Trond Myklebuststatic inline unsigned long nfs_save_change_attribute(struct inode *dir) 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3158edb01828837302055a8f0afddb2256659480bc5Trond Myklebust return NFS_I(dir)->cache_change_attribute; 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 3194b841736bc16b320bcdb1e8ece585b3ced9a8811Trond Myklebust * nfs_verify_change_attribute - Detects NFS remote directory changes 3204b841736bc16b320bcdb1e8ece585b3ced9a8811Trond Myklebust * @dir - pointer to parent directory inode 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @chattr - previously saved change attribute 3224b841736bc16b320bcdb1e8ece585b3ced9a8811Trond Myklebust * Return "false" if the verifiers doesn't match the change attribute. 3234b841736bc16b320bcdb1e8ece585b3ced9a8811Trond Myklebust * This would usually indicate that the directory contents have changed on 3244b841736bc16b320bcdb1e8ece585b3ced9a8811Trond Myklebust * the server, and that any dentries need revalidating. 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3264b841736bc16b320bcdb1e8ece585b3ced9a8811Trond Myklebuststatic inline int nfs_verify_change_attribute(struct inode *dir, unsigned long chattr) 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3284b841736bc16b320bcdb1e8ece585b3ced9a8811Trond Myklebust return chattr == NFS_I(dir)->cache_change_attribute; 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/inode.c 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 33429884df0d89c1df0dec3449405bc41569bb44800Trond Myklebustextern int nfs_sync_mapping(struct address_space *mapping); 335cd9ae2b6a75bb1fa0d370929c2d7a7da1ed719d9Trond Myklebustextern void nfs_zap_mapping(struct inode *inode, struct address_space *mapping); 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_zap_caches(struct inode *); 337c4812998398d9cbce8646494704c52297359ede0Trond Myklebustextern void nfs_invalidate_atime(struct inode *); 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *, 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_fattr *); 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); 341decf491f3076190262d4c649bed877650623903aTrond Myklebustextern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr); 34270ca88521fc7bee8ef0fc22033a439d4b9a2c70dTrond Myklebustextern int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr); 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); 344e6305c43eda10ebfd2ad9e35d6e172ccc7bb3695Al Viroextern int nfs_permission(struct inode *, int); 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_open(struct inode *, struct file *); 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_release(struct inode *, struct file *); 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_attribute_timeout(struct inode *inode); 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode); 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int __nfs_revalidate_inode(struct nfs_server *, struct inode *); 35044b11874ff583b6e766a05856b04f3c492c32b84Trond Myklebustextern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping); 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_setattr(struct dentry *, struct iattr *); 35265e4308d2500e7daf60c3dccc202c61ffb066c63Trond Myklebustextern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr); 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx); 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void put_nfs_open_context(struct nfs_open_context *ctx); 355dc0b027dfadfcb8a5504f7d8052754bf8d501ab9Trond Myklebustextern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode); 356f43bf0bebed7c33b698a8a25f95812f9e87c3843Trond Myklebustextern u64 nfs_compat_user_ino64(u64 fileid); 3574704f0e274829e3af00737d2d9adace2d71a9605Trond Myklebustextern void nfs_fattr_init(struct nfs_fattr *fattr); 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3592d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebustextern struct nfs_fattr *nfs_alloc_fattr(void); 3602d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebust 3612d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebuststatic inline void nfs_free_fattr(const struct nfs_fattr *fattr) 3622d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebust{ 3632d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebust kfree(fattr); 3642d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebust} 3652d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebust 3662d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebustextern struct nfs_fh *nfs_alloc_fhandle(void); 3672d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebust 3682d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebuststatic inline void nfs_free_fhandle(const struct nfs_fh *fh) 3692d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebust{ 3702d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebust kfree(fh); 3712d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebust} 3722d36bfde8565b315e624302d12da5a7c9d195522Trond Myklebust 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */ 3745a874db4d9bfd8a4c6324d844a4d1c7cfa5cf2c4Al Viroextern __be32 root_nfs_parse_addr(char *name); /*__init*/ 3754704f0e274829e3af00737d2d9adace2d71a9605Trond Myklebustextern unsigned long nfs_inc_attr_generation_counter(void); 3760e574af1be5f569a5d7f2800333b0bfb358a5e34Trond Myklebust 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/file.c 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 380c5ef1c42c51b1b5b4a401a6517bdda30933ddbafArjan van de Venextern const struct inode_operations nfs_file_inode_operations; 381b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#ifdef CONFIG_NFS_V3 382c5ef1c42c51b1b5b4a401a6517bdda30933ddbafArjan van de Venextern const struct inode_operations nfs3_file_inode_operations; 383b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#endif /* CONFIG_NFS_V3 */ 3844b6f5d20b04dcbc3d888555522b90ba6d36c4106Arjan van de Venextern const struct file_operations nfs_file_operations; 385f5e54d6e53a20cef45af7499e86164f0e0d16bb2Christoph Hellwigextern const struct address_space_operations nfs_file_aops; 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 387c03025d55540bd648f2546659090140ecc835572Trond Myklebuststatic inline struct nfs_open_context *nfs_file_open_context(struct file *filp) 388c03025d55540bd648f2546659090140ecc835572Trond Myklebust{ 389c03025d55540bd648f2546659090140ecc835572Trond Myklebust return filp->private_data; 390c03025d55540bd648f2546659090140ecc835572Trond Myklebust} 391c03025d55540bd648f2546659090140ecc835572Trond Myklebust 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct rpc_cred *nfs_file_cred(struct file *file) 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 394504e518953a330c8d44a95bdd65a5c9f50f1012eNeil Brown if (file != NULL) { 395504e518953a330c8d44a95bdd65a5c9f50f1012eNeil Brown struct nfs_open_context *ctx = 396504e518953a330c8d44a95bdd65a5c9f50f1012eNeil Brown nfs_file_open_context(file); 397504e518953a330c8d44a95bdd65a5c9f50f1012eNeil Brown if (ctx) 398504e518953a330c8d44a95bdd65a5c9f50f1012eNeil Brown return ctx->cred; 399504e518953a330c8d44a95bdd65a5c9f50f1012eNeil Brown } 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 404b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher * linux/fs/nfs/xattr.c 405b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher */ 406b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#ifdef CONFIG_NFS_V3_ACL 407b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern ssize_t nfs3_listxattr(struct dentry *, char *, size_t); 408b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern ssize_t nfs3_getxattr(struct dentry *, const char *, void *, size_t); 409b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern int nfs3_setxattr(struct dentry *, const char *, 410b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher const void *, size_t, int); 411b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern int nfs3_removexattr (struct dentry *, const char *name); 412b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#else 413b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher# define nfs3_listxattr NULL 414b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher# define nfs3_getxattr NULL 415b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher# define nfs3_setxattr NULL 416b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher# define nfs3_removexattr NULL 417b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#endif 418b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher 419b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher/* 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/direct.c 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t, 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long); 424027445c37282bc1ed26add45e573ad2d3e4860a5Badari Pulavartyextern ssize_t nfs_file_direct_read(struct kiocb *iocb, 425027445c37282bc1ed26add45e573ad2d3e4860a5Badari Pulavarty const struct iovec *iov, unsigned long nr_segs, 426027445c37282bc1ed26add45e573ad2d3e4860a5Badari Pulavarty loff_t pos); 427027445c37282bc1ed26add45e573ad2d3e4860a5Badari Pulavartyextern ssize_t nfs_file_direct_write(struct kiocb *iocb, 428027445c37282bc1ed26add45e573ad2d3e4860a5Badari Pulavarty const struct iovec *iov, unsigned long nr_segs, 429027445c37282bc1ed26add45e573ad2d3e4860a5Badari Pulavarty loff_t pos); 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/dir.c 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 434c5ef1c42c51b1b5b4a401a6517bdda30933ddbafArjan van de Venextern const struct inode_operations nfs_dir_inode_operations; 435b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#ifdef CONFIG_NFS_V3 436c5ef1c42c51b1b5b4a401a6517bdda30933ddbafArjan van de Venextern const struct inode_operations nfs3_dir_inode_operations; 437b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#endif /* CONFIG_NFS_V3 */ 4384b6f5d20b04dcbc3d888555522b90ba6d36c4106Arjan van de Venextern const struct file_operations nfs_dir_operations; 439f786aa90e026f2174bb0c26d49f338c5c46ede55Al Viroextern const struct dentry_operations nfs_dentry_operations; 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 441bfc69a456642a51c89dfd8e5184468857cb44f32Trond Myklebustextern void nfs_force_lookup_revalidate(struct inode *dir); 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr); 443af22f94ae02ab9dd4fd7fe628c8434a59cc293beTrond Myklebustextern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags); 444af22f94ae02ab9dd4fd7fe628c8434a59cc293beTrond Myklebustextern void nfs_access_zap_cache(struct inode *inode); 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/symlink.c 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 449c5ef1c42c51b1b5b4a401a6517bdda30933ddbafArjan van de Venextern const struct inode_operations nfs_symlink_inode_operations; 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 452a72b44222d222749d54b3e370d825094352e389fTrond Myklebust * linux/fs/nfs/sysctl.c 453a72b44222d222749d54b3e370d825094352e389fTrond Myklebust */ 454a72b44222d222749d54b3e370d825094352e389fTrond Myklebust#ifdef CONFIG_SYSCTL 455a72b44222d222749d54b3e370d825094352e389fTrond Myklebustextern int nfs_register_sysctl(void); 456a72b44222d222749d54b3e370d825094352e389fTrond Myklebustextern void nfs_unregister_sysctl(void); 457a72b44222d222749d54b3e370d825094352e389fTrond Myklebust#else 4587fd105e758c8d746d57ab7e77f100e096bf153c8Stephen Rothwell#define nfs_register_sysctl() 0 459a72b44222d222749d54b3e370d825094352e389fTrond Myklebust#define nfs_unregister_sysctl() do { } while(0) 460a72b44222d222749d54b3e370d825094352e389fTrond Myklebust#endif 461a72b44222d222749d54b3e370d825094352e389fTrond Myklebust 462a72b44222d222749d54b3e370d825094352e389fTrond Myklebust/* 46355a975937d40cac582e981ddc8ed783b3dcc043cTrond Myklebust * linux/fs/nfs/namespace.c 46455a975937d40cac582e981ddc8ed783b3dcc043cTrond Myklebust */ 465c5ef1c42c51b1b5b4a401a6517bdda30933ddbafArjan van de Venextern const struct inode_operations nfs_mountpoint_inode_operations; 466c5ef1c42c51b1b5b4a401a6517bdda30933ddbafArjan van de Venextern const struct inode_operations nfs_referral_inode_operations; 46751d8fa6a109589d522c18a8e9bf3fb167a91b1bcTrond Myklebustextern int nfs_mountpoint_expiry_timeout; 46851d8fa6a109589d522c18a8e9bf3fb167a91b1bcTrond Myklebustextern void nfs_release_automount_timer(void); 46955a975937d40cac582e981ddc8ed783b3dcc043cTrond Myklebust 47055a975937d40cac582e981ddc8ed783b3dcc043cTrond Myklebust/* 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/unlink.c 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 473e4eff1a622edd6ab7b73acd5d8763aa2fa3fee49Trond Myklebustextern int nfs_async_unlink(struct inode *dir, struct dentry *dentry); 474e4eff1a622edd6ab7b73acd5d8763aa2fa3fee49Trond Myklebustextern void nfs_complete_unlink(struct dentry *dentry, struct inode *); 475565277f63c616e11c37309a1e98c052d18ebbb55Trond Myklebustextern void nfs_block_sillyrename(struct dentry *dentry); 476565277f63c616e11c37309a1e98c052d18ebbb55Trond Myklebustextern void nfs_unblock_sillyrename(struct dentry *dentry); 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/write.c 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 48189a09141df6ac1c3821fbe44ca8384eb37692965Peter Zijlstraextern int nfs_congestion_kb; 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_writepage(struct page *page, struct writeback_control *wbc); 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_writepages(struct address_space *, struct writeback_control *); 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_flush_incompatible(struct file *file, struct page *page); 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); 486462d5b3296b56289efec426499a83faad4c08d9eChuck Leverextern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Try to write back everything synchronously (but check the 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return value!) 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4921c75950b9a2254ef08f986e00ad20266ae9ba7f1Trond Myklebustextern int nfs_wb_all(struct inode *inode); 4931c75950b9a2254ef08f986e00ad20266ae9ba7f1Trond Myklebustextern int nfs_wb_page(struct inode *inode, struct page* page); 4941b3b4a1a2deb7d3e5d66063bd76304d840c966b3Trond Myklebustextern int nfs_wb_page_cancel(struct inode *inode, struct page* page); 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) 496b608b283a962caaa280756bc8563016a71712acfTrond Myklebustextern int nfs_commit_inode(struct inode *, int); 497c9d8f89d9816c1d16ada492aa547a4d692508c0dTrond Myklebustextern struct nfs_write_data *nfs_commitdata_alloc(void); 4988aca67f0ae2d8811165c22326825a645cc8e1b48Trond Myklebustextern void nfs_commit_free(struct nfs_write_data *wdata); 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsnfs_have_writebacks(struct inode *inode) 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NFS_I(inode)->npages != 0; 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 508e4e20512cfe0bacec0764b4925889d1fa94644f9Adrian Bunk * Allocate nfs_write_data structures 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5108d5658c949e6d89edc579a1f112aeee3bc232a8eTrond Myklebustextern struct nfs_write_data *nfs_writedata_alloc(unsigned int npages); 5111ae88b2e446261c038f2c0c3150ffae142b227a2Trond Myklebustextern void nfs_writedata_free(struct nfs_write_data *); 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/read.c 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_readpage(struct file *, struct page *); 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_readpages(struct file *, struct address_space *, 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head *, unsigned); 519ec06c096edec0755534c7126f4caded69de131c2Trond Myklebustextern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *); 520f42b293d6d5259043a8944b556eeab427c695d57David Howellsextern int nfs_readpage_async(struct nfs_open_context *, struct inode *, 521f42b293d6d5259043a8944b556eeab427c695d57David Howells struct page *); 522963d8fe53339128ee46a7701f2e36305f0ccff8cTrond Myklebust 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 524e4e20512cfe0bacec0764b4925889d1fa94644f9Adrian Bunk * Allocate nfs_read_data structures 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5268d5658c949e6d89edc579a1f112aeee3bc232a8eTrond Myklebustextern struct nfs_read_data *nfs_readdata_alloc(unsigned int npages); 5271ae88b2e446261c038f2c0c3150ffae142b227a2Trond Myklebustextern void nfs_readdata_free(struct nfs_read_data *); 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 530b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher * linux/fs/nfs3proc.c 531b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher */ 532b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#ifdef CONFIG_NFS_V3_ACL 533b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type); 534b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern int nfs3_proc_setacl(struct inode *inode, int type, 535b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher struct posix_acl *acl); 536055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacherextern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, 537055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher mode_t mode); 5385c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacherextern void nfs3_forget_cached_acls(struct inode *inode); 539055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher#else 540055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacherstatic inline int nfs3_proc_set_default_acl(struct inode *dir, 541055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher struct inode *inode, 542055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher mode_t mode) 543055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher{ 544055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher return 0; 545055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher} 5465c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher 5475c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacherstatic inline void nfs3_forget_cached_acls(struct inode *inode) 5485c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher{ 5495c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher} 550b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#endif /* CONFIG_NFS_V3_ACL */ 551b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher 552b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher/* 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * inline functions 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 556433c92379d9c2c59c2ebc7628fe4fb02cfc2daf8Chuck Leverstatic inline loff_t nfs_size_to_loff_t(__u64 size) 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 558433c92379d9c2c59c2ebc7628fe4fb02cfc2daf8Chuck Lever if (size > (__u64) OFFSET_MAX - 1) 559433c92379d9c2c59c2ebc7628fe4fb02cfc2daf8Chuck Lever return OFFSET_MAX - 1; 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (loff_t) size; 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline ino_t 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsnfs_fileid_to_ino_t(u64 fileid) 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ino_t ino = (ino_t) fileid; 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sizeof(ino_t) < sizeof(u64)) 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8; 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ino; 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* NFS root */ 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void * nfs_root_data(void); 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define nfs_wait_event(clnt, wq, condition) \ 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds({ \ 578150030b78a454ba50d5e267b0dcf01b162809192Matthew Wilcox int __retval = wait_event_killable(wq, condition); \ 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __retval; \ 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}) 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_JUKEBOX_RETRY_TIME (5 * HZ) 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* __KERNEL__ */ 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NFS debug flags 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_VFS 0x0001 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_DIRCACHE 0x0002 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_LOOKUPCACHE 0x0004 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_PAGECACHE 0x0008 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_PROC 0x0010 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_XDR 0x0020 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_FILE 0x0040 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_ROOT 0x0080 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_CALLBACK 0x0100 59824c8dbbb5f777187d660393599641ab3307b4b97David Howells#define NFSDBG_CLIENT 0x0200 599f18289931d705f9c4634b361341a1677bea97acaChuck Lever#define NFSDBG_MOUNT 0x0400 600c6a6f19e22da0a3d74214ee010224c9a30a794c1David Howells#define NFSDBG_FSCACHE 0x0800 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_ALL 0xFFFF 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __KERNEL__ 6044dc2eaecd4cf0687727e418540bccf956a62ebcfBenny Halevy 6054dc2eaecd4cf0687727e418540bccf956a62ebcfBenny Halevy/* 6064dc2eaecd4cf0687727e418540bccf956a62ebcfBenny Halevy * Enable debugging support for nfs client. 6074dc2eaecd4cf0687727e418540bccf956a62ebcfBenny Halevy * Requires RPC_DEBUG. 6084dc2eaecd4cf0687727e418540bccf956a62ebcfBenny Halevy */ 6094dc2eaecd4cf0687727e418540bccf956a62ebcfBenny Halevy#ifdef RPC_DEBUG 6104dc2eaecd4cf0687727e418540bccf956a62ebcfBenny Halevy# define NFS_DEBUG 6114dc2eaecd4cf0687727e418540bccf956a62ebcfBenny Halevy#endif 6124dc2eaecd4cf0687727e418540bccf956a62ebcfBenny Halevy 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# undef ifdebug 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# ifdef NFS_DEBUG 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac)) 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# else 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# define ifdebug(fac) if (0) 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# endif 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* __KERNEL */ 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 622