nfs_fs.h revision 00a926422765064cb28e218d4837411c88bf6a3e
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/nfs_fs_sb.h> 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sunrpc/debug.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sunrpc/auth.h> 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sunrpc/clnt.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/nfs.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/nfs2.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/nfs3.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/nfs4.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/nfs_xdr.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/rwsem.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mempool.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Enable debugging support for nfs client. 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Requires RPC_DEBUG. 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef RPC_DEBUG 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# define NFS_DEBUG 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_MAX_FILE_IO_BUFFER_SIZE 32768 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_DEF_FILE_IO_BUFFER_SIZE 4096 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * superblock magic number for NFS 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_SUPER_MAGIC 0x6969 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * These are the default flags for swap requests 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * When flushing a cluster of dirty pages, there can be different 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * strategies: 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FLUSH_AGING 0 /* only flush old buffers */ 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FLUSH_SYNC 1 /* file being synced, or contention */ 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FLUSH_WAIT 2 /* wait for completion */ 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 */ 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __KERNEL__ 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NFSv3/v4 Access mode cache entry 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs_access_entry { 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long jiffies; 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_cred * cred; 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int mask; 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs4_state; 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs_open_context { 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_t count; 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dentry *dentry; 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_cred *cred; 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs4_state *state; 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fl_owner_t lockowner; 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int mode; 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error; 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head list; 8700a926422765064cb28e218d4837411c88bf6a3eOlivier Galibert 8800a926422765064cb28e218d4837411c88bf6a3eOlivier Galibert int dir_pos; /* Directory cookie cache */ 8900a926422765064cb28e218d4837411c88bf6a3eOlivier Galibert __u64 dir_cookie; 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NFSv4 delegation 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs_delegation; 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 975c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacherstruct posix_acl; 985c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * nfs fs inode data in memory 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct nfs_inode { 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The 64bit 'inode number' 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u64 fileid; 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NFS file handle 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_fh fh; 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Various flags 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int flags; 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * read_cache_jiffies is when we started read-caching this inode, 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and read_cache_mtime is the mtime of the inode at that time. 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * attrtimeo is for how long the cached information is assumed 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to be valid. A successful attribute revalidation doubles 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * attrtimeo (up to acregmax/acdirmax), a failure resets it to 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * acregmin/acdirmin. 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We need to revalidate the cached attrs for this inode if 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * jiffies - read_cache_jiffies > attrtimeo 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and invalidate any cached data/flush out any dirty pages if 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * we find that 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * mtime != read_cache_mtime 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long read_cache_jiffies; 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long attrtimeo; 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long attrtimeo_timestamp; 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u64 change_attr; /* v4 only */ 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 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 /* 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Counter indicating the number of outstanding requests that 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will cause a file data update. 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_t data_updates; 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_access_entry cache_access; 1525c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher#ifdef CONFIG_NFS_V3_ACL 1535c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher struct posix_acl *acl_access; 1545c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher struct posix_acl *acl_default; 1555c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher#endif 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is the cookie verifier used for NFSv3 readdir 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * operations 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 cookieverf[2]; 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is the list of dirty unwritten pages. 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t req_lock; 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head dirty; 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head commit; 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct radix_tree_root nfs_page_tree; 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int ndirty, 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ncommit, 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds npages; 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Open contexts for shared mmap writes */ 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head open_files; 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t nfs_i_wait; 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_NFS_V4 181e50a1c2e1f816c81eed6a589019052cb44189267J. Bruce Fields struct nfs4_cached_acl *nfs4_acl; 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NFSv4 state */ 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head open_states; 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_delegation *delegation; 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int delegation_state; 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rw_semaphore rwsem; 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_NFS_V4*/ 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode vfs_inode; 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Legal inode flag values 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_INO_STALE 0x0001 /* possible stale inode */ 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_INO_ADVISE_RDPLUS 0x0002 /* advise readdirplus */ 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_INO_REVALIDATING 0x0004 /* revalidating attrs */ 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_INO_INVALID_ATTR 0x0008 /* cached attrs are invalid */ 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_INO_INVALID_DATA 0x0010 /* cached data is invalid */ 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_INO_INVALID_ATIME 0x0020 /* cached atime is invalid */ 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_INO_INVALID_ACCESS 0x0040 /* cached access cred invalid */ 201ada70d9425bcc5e376fef8591e4e76e204c0834cTrond Myklebust#define NFS_INO_INVALID_ACL 0x0080 /* cached acls are invalid */ 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct nfs_inode *NFS_I(struct inode *inode) 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of(inode, struct nfs_inode, vfs_inode); 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_SB(s) ((struct nfs_server *)(s->s_fs_info)) 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_FH(inode) (&NFS_I(inode)->fh) 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_SERVER(inode) (NFS_SB(inode->i_sb)) 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_CLIENT(inode) (NFS_SERVER(inode)->client) 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_PROTO(inode) (NFS_SERVER(inode)->rpc_ops) 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_ADDR(inode) (RPC_PEERADDR(NFS_CLIENT(inode))) 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_COOKIEVERF(inode) (NFS_I(inode)->cookieverf) 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_READTIME(inode) (NFS_I(inode)->read_cache_jiffies) 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_CHANGE_ATTR(inode) (NFS_I(inode)->change_attr) 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_ATTRTIMEO(inode) (NFS_I(inode)->attrtimeo) 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_MINATTRTIMEO(inode) \ 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmin \ 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds : NFS_SERVER(inode)->acregmin) 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_MAXATTRTIMEO(inode) \ 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmax \ 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds : NFS_SERVER(inode)->acregmax) 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_ATTRTIMEO_UPDATE(inode) (NFS_I(inode)->attrtimeo_timestamp) 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_FLAGS(inode) (NFS_I(inode)->flags) 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_REVALIDATING(inode) (NFS_FLAGS(inode) & NFS_INO_REVALIDATING) 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_STALE(inode) (NFS_FLAGS(inode) & NFS_INO_STALE) 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 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void NFS_CACHEINV(struct inode *inode) 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!nfs_caches_unstable(inode)) 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NFS_FLAGS(inode) |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS; 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int nfs_server_capable(struct inode *inode, int cap) 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NFS_SERVER(inode)->caps & cap; 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int NFS_USE_READDIRPLUS(struct inode *inode) 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NFS_FLAGS(inode) & NFS_INO_ADVISE_RDPLUS; 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * nfs_save_change_attribute - Returns the inode attribute change cookie 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @inode - pointer to inode 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The "change attribute" is updated every time we finish an operation 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that will result in a metadata change on the server. 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline long nfs_save_change_attribute(struct inode *inode) 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NFS_I(inode)->cache_change_attribute; 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * nfs_verify_change_attribute - Detects NFS inode cache updates 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @inode - pointer to inode 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @chattr - previously saved change attribute 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Return "false" if metadata has been updated (or is in the process of 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * being updated) since the change attribute was saved. 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int nfs_verify_change_attribute(struct inode *inode, unsigned long chattr) 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return !nfs_caches_unstable(inode) 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && chattr == NFS_I(inode)->cache_change_attribute; 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/inode.c 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_zap_caches(struct inode *); 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *, 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_fattr *); 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_permission(struct inode *, int, struct nameidata *); 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_access_get_cached(struct inode *, struct rpc_cred *, struct nfs_access_entry *); 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *); 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_open(struct inode *, struct file *); 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_release(struct inode *, struct file *); 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_attribute_timeout(struct inode *inode); 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode); 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int __nfs_revalidate_inode(struct nfs_server *, struct inode *); 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_setattr(struct dentry *, struct iattr *); 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_begin_attr_update(struct inode *); 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_end_attr_update(struct inode *); 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_begin_data_update(struct inode *); 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_end_data_update(struct inode *); 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_end_data_update_defer(struct inode *); 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, struct rpc_cred *cred); 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx); 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void put_nfs_open_context(struct nfs_open_context *ctx); 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx); 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct nfs_open_context *nfs_find_open_context(struct inode *inode, int mode); 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_file_clear_open_context(struct file *filp); 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */ 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern u32 root_nfs_parse_addr(char *name); /*__init*/ 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/file.c 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct inode_operations nfs_file_inode_operations; 313b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#ifdef CONFIG_NFS_V3 314b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern struct inode_operations nfs3_file_inode_operations; 315b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#endif /* CONFIG_NFS_V3 */ 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct file_operations nfs_file_operations; 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct address_space_operations nfs_file_aops; 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct rpc_cred *nfs_file_cred(struct file *file) 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (file != NULL) { 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_open_context *ctx; 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctx = (struct nfs_open_context*)file->private_data; 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ctx->cred; 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 331b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher * linux/fs/nfs/xattr.c 332b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher */ 333b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#ifdef CONFIG_NFS_V3_ACL 334b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern ssize_t nfs3_listxattr(struct dentry *, char *, size_t); 335b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern ssize_t nfs3_getxattr(struct dentry *, const char *, void *, size_t); 336b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern int nfs3_setxattr(struct dentry *, const char *, 337b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher const void *, size_t, int); 338b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern int nfs3_removexattr (struct dentry *, const char *name); 339b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#else 340b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher# define nfs3_listxattr NULL 341b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher# define nfs3_getxattr NULL 342b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher# define nfs3_setxattr NULL 343b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher# define nfs3_removexattr NULL 344b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#endif 345b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher 346b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher/* 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/direct.c 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t, 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long); 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern ssize_t nfs_file_direct_read(struct kiocb *iocb, char __user *buf, 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t count, loff_t pos); 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern ssize_t nfs_file_direct_write(struct kiocb *iocb, const char __user *buf, 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t count, loff_t pos); 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/dir.c 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct inode_operations nfs_dir_inode_operations; 360b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#ifdef CONFIG_NFS_V3 361b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern struct inode_operations nfs3_dir_inode_operations; 362b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#endif /* CONFIG_NFS_V3 */ 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct file_operations nfs_dir_operations; 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct dentry_operations nfs_dentry_operations; 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr); 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/symlink.c 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct inode_operations nfs_symlink_inode_operations; 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/unlink.c 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_async_unlink(struct dentry *); 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_complete_unlink(struct dentry *); 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/write.c 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_writepage(struct page *page, struct writeback_control *wbc); 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_writepages(struct address_space *, struct writeback_control *); 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_flush_incompatible(struct file *file, struct page *page); 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_writeback_done(struct rpc_task *task); 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_commit_done(struct rpc_task *); 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Try to write back everything synchronously (but check the 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return value!) 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_sync_inode(struct inode *, unsigned long, unsigned int, int); 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_commit_inode(struct inode *, unsigned long, unsigned int, int); 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsnfs_commit_inode(struct inode *inode, unsigned long idx_start, unsigned int npages, int how) 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsnfs_have_writebacks(struct inode *inode) 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NFS_I(inode)->npages != 0; 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsnfs_wb_all(struct inode *inode) 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error = nfs_sync_inode(inode, 0, 0, FLUSH_WAIT); 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (error < 0) ? error : 0; 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Write back all requests on one page - we do this before reading it. 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int nfs_wb_page_priority(struct inode *inode, struct page* page, int how) 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error = nfs_sync_inode(inode, page->index, 1, 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds how | FLUSH_WAIT | FLUSH_STABLE); 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (error < 0) ? error : 0; 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int nfs_wb_page(struct inode *inode, struct page* page) 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return nfs_wb_page_priority(inode, page, 0); 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Allocate and free nfs_write_data structures 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern mempool_t *nfs_wdata_mempool; 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct nfs_write_data *nfs_writedata_alloc(void) 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_write_data *p = mempool_alloc(nfs_wdata_mempool, SLAB_NOFS); 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (p) { 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(p, 0, sizeof(*p)); 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD(&p->pages); 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return p; 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void nfs_writedata_free(struct nfs_write_data *p) 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mempool_free(p, nfs_wdata_mempool); 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/nfs/read.c 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_readpage(struct file *, struct page *); 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfs_readpages(struct file *, struct address_space *, 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head *, unsigned); 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_readpage_result(struct rpc_task *); 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Allocate and free nfs_read_data structures 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern mempool_t *nfs_rdata_mempool; 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct nfs_read_data *nfs_readdata_alloc(void) 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct nfs_read_data *p = mempool_alloc(nfs_rdata_mempool, SLAB_NOFS); 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (p) 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(p, 0, sizeof(*p)); 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return p; 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void nfs_readdata_free(struct nfs_read_data *p) 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mempool_free(p, nfs_rdata_mempool); 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void nfs_readdata_release(struct rpc_task *task); 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 484b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher * linux/fs/nfs3proc.c 485b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher */ 486b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#ifdef CONFIG_NFS_V3_ACL 487b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type); 488b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacherextern int nfs3_proc_setacl(struct inode *inode, int type, 489b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher struct posix_acl *acl); 490055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacherextern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, 491055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher mode_t mode); 4925c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacherextern void nfs3_forget_cached_acls(struct inode *inode); 493055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher#else 494055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacherstatic inline int nfs3_proc_set_default_acl(struct inode *dir, 495055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher struct inode *inode, 496055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher mode_t mode) 497055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher{ 498055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher return 0; 499055ffbea0596942579b0dae71d5dab78de8135f6Andreas Gruenbacher} 5005c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher 5015c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacherstatic inline void nfs3_forget_cached_acls(struct inode *inode) 5025c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher{ 5035c6a9f7d92291c832d47e792ed1fafa44acb066eAndreas Gruenbacher} 504b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher#endif /* CONFIG_NFS_V3_ACL */ 505b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher 506b7fa0554cf1ba6d6895cd0a5b02989a26e0bc704Andreas Gruenbacher/* 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/mount_clnt.c 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (Used only by nfsroot module) 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int nfsroot_mount(struct sockaddr_in *, char *, struct nfs_fh *, 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int, int); 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * inline functions 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline loff_t 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsnfs_size_to_loff_t(__u64 size) 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds loff_t maxsz = (((loff_t) ULONG_MAX) << PAGE_CACHE_SHIFT) + PAGE_CACHE_SIZE - 1; 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (size > maxsz) 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return maxsz; 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (loff_t) size; 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline ino_t 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsnfs_fileid_to_ino_t(u64 fileid) 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ino_t ino = (ino_t) fileid; 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sizeof(ino_t) < sizeof(u64)) 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8; 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ino; 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* NFS root */ 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void * nfs_root_data(void); 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define nfs_wait_event(clnt, wq, condition) \ 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds({ \ 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int __retval = 0; \ 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clnt->cl_intr) { \ 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sigset_t oldmask; \ 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rpc_clnt_sigmask(clnt, &oldmask); \ 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __retval = wait_event_interruptible(wq, condition); \ 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rpc_clnt_sigunmask(clnt, &oldmask); \ 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else \ 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_event(wq, condition); \ 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __retval; \ 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}) 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFS_JUKEBOX_RETRY_TIME (5 * HZ) 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* __KERNEL__ */ 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NFS debug flags 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_VFS 0x0001 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_DIRCACHE 0x0002 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_LOOKUPCACHE 0x0004 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_PAGECACHE 0x0008 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_PROC 0x0010 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_XDR 0x0020 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_FILE 0x0040 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_ROOT 0x0080 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_CALLBACK 0x0100 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NFSDBG_ALL 0xFFFF 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __KERNEL__ 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# undef ifdebug 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# ifdef NFS_DEBUG 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac)) 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# else 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# define ifdebug(fac) if (0) 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# endif 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* __KERNEL */ 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 580