Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/nfs/inode.c |
| 3 | * |
| 4 | * Copyright (C) 1992 Rick Sladkey |
| 5 | * |
| 6 | * nfs inode and superblock handling functions |
| 7 | * |
Alan Cox | 526719b | 2008-10-27 15:19:48 +0000 | [diff] [blame] | 8 | * Modularised by Alan Cox <alan@lxorguk.ukuu.org.uk>, while hacking some |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * experimental NFS changes. Modularisation taken straight from SYS5 fs. |
| 10 | * |
| 11 | * Change to nfs_read_super() to permit NFS mounts to multi-homed hosts. |
| 12 | * J.S.Peatfield@damtp.cam.ac.uk |
| 13 | * |
| 14 | */ |
| 15 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | #include <linux/module.h> |
| 17 | #include <linux/init.h> |
Alexey Dobriyan | e8edc6e | 2007-05-21 01:22:52 +0400 | [diff] [blame] | 18 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <linux/time.h> |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/mm.h> |
| 22 | #include <linux/string.h> |
| 23 | #include <linux/stat.h> |
| 24 | #include <linux/errno.h> |
| 25 | #include <linux/unistd.h> |
| 26 | #include <linux/sunrpc/clnt.h> |
| 27 | #include <linux/sunrpc/stats.h> |
Chuck Lever | 4ece3a2 | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 28 | #include <linux/sunrpc/metrics.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/nfs_fs.h> |
| 30 | #include <linux/nfs_mount.h> |
| 31 | #include <linux/nfs4_mount.h> |
| 32 | #include <linux/lockd/bind.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/seq_file.h> |
| 34 | #include <linux/mount.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/vfs.h> |
Manoj Naik | 9cdb388 | 2006-06-09 09:34:28 -0400 | [diff] [blame] | 36 | #include <linux/inet.h> |
| 37 | #include <linux/nfs_xdr.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 38 | #include <linux/slab.h> |
Frank Filz | 3fa0b4e | 2010-12-02 19:31:23 +0000 | [diff] [blame] | 39 | #include <linux/compat.h> |
Jeff Layton | d310310 | 2011-12-01 22:44:39 +0100 | [diff] [blame] | 40 | #include <linux/freezer.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <asm/uaccess.h> |
| 43 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 44 | #include "nfs4_fs.h" |
Trond Myklebust | a72b442 | 2006-01-03 09:55:41 +0100 | [diff] [blame] | 45 | #include "callback.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include "delegation.h" |
Chuck Lever | d9ef5a8 | 2006-03-20 13:44:13 -0500 | [diff] [blame] | 47 | #include "iostat.h" |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 48 | #include "internal.h" |
David Howells | 8ec442a | 2009-04-03 16:42:42 +0100 | [diff] [blame] | 49 | #include "fscache.h" |
Benny Halevy | e5e9401 | 2010-10-20 00:18:01 -0400 | [diff] [blame] | 50 | #include "pnfs.h" |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 51 | #include "nfs.h" |
Stanislav Kinsbursky | 1b340d0 | 2011-11-25 17:13:04 +0300 | [diff] [blame] | 52 | #include "netns.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
Trond Myklebust | f4ce129 | 2013-08-19 18:59:33 -0400 | [diff] [blame] | 54 | #include "nfstrace.h" |
| 55 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #define NFSDBG_FACILITY NFSDBG_VFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Trond Myklebust | f43bf0b | 2007-10-09 12:01:04 -0400 | [diff] [blame] | 58 | #define NFS_64_BIT_INODE_NUMBERS_ENABLED 1 |
| 59 | |
| 60 | /* Default is to see 64-bit inode numbers */ |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 61 | static bool enable_ino64 = NFS_64_BIT_INODE_NUMBERS_ENABLED; |
Trond Myklebust | f43bf0b | 2007-10-09 12:01:04 -0400 | [diff] [blame] | 62 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | static void nfs_invalidate_inode(struct inode *); |
Trond Myklebust | 24aa1fe | 2005-12-03 15:20:07 -0500 | [diff] [blame] | 64 | static int nfs_update_inode(struct inode *, struct nfs_fattr *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 66 | static struct kmem_cache * nfs_inode_cachep; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 67 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | static inline unsigned long |
| 69 | nfs_fattr_to_ino_t(struct nfs_fattr *fattr) |
| 70 | { |
| 71 | return nfs_fileid_to_ino_t(fattr->fileid); |
| 72 | } |
| 73 | |
Trond Myklebust | f43bf0b | 2007-10-09 12:01:04 -0400 | [diff] [blame] | 74 | /** |
Trond Myklebust | 72cb77f | 2009-03-11 14:10:30 -0400 | [diff] [blame] | 75 | * nfs_wait_bit_killable - helper for functions that are sleeping on bit locks |
| 76 | * @word: long word containing the bit lock |
| 77 | */ |
| 78 | int nfs_wait_bit_killable(void *word) |
| 79 | { |
| 80 | if (fatal_signal_pending(current)) |
| 81 | return -ERESTARTSYS; |
Colin Cross | 416ad3c | 2013-05-06 23:50:06 +0000 | [diff] [blame] | 82 | freezable_schedule_unsafe(); |
Trond Myklebust | 72cb77f | 2009-03-11 14:10:30 -0400 | [diff] [blame] | 83 | return 0; |
| 84 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 85 | EXPORT_SYMBOL_GPL(nfs_wait_bit_killable); |
Trond Myklebust | 72cb77f | 2009-03-11 14:10:30 -0400 | [diff] [blame] | 86 | |
| 87 | /** |
Trond Myklebust | f43bf0b | 2007-10-09 12:01:04 -0400 | [diff] [blame] | 88 | * nfs_compat_user_ino64 - returns the user-visible inode number |
| 89 | * @fileid: 64-bit fileid |
| 90 | * |
| 91 | * This function returns a 32-bit inode number if the boot parameter |
| 92 | * nfs.enable_ino64 is zero. |
| 93 | */ |
| 94 | u64 nfs_compat_user_ino64(u64 fileid) |
| 95 | { |
Frank Filz | 3fa0b4e | 2010-12-02 19:31:23 +0000 | [diff] [blame] | 96 | #ifdef CONFIG_COMPAT |
| 97 | compat_ulong_t ino; |
| 98 | #else |
| 99 | unsigned long ino; |
| 100 | #endif |
Trond Myklebust | f43bf0b | 2007-10-09 12:01:04 -0400 | [diff] [blame] | 101 | |
| 102 | if (enable_ino64) |
| 103 | return fileid; |
| 104 | ino = fileid; |
| 105 | if (sizeof(ino) < sizeof(fileid)) |
| 106 | ino ^= fileid >> (sizeof(fileid)-sizeof(ino)) * 8; |
| 107 | return ino; |
| 108 | } |
| 109 | |
Trond Myklebust | eed9935 | 2012-12-14 14:36:36 -0500 | [diff] [blame] | 110 | int nfs_drop_inode(struct inode *inode) |
| 111 | { |
| 112 | return NFS_STALE(inode) || generic_drop_inode(inode); |
| 113 | } |
| 114 | EXPORT_SYMBOL_GPL(nfs_drop_inode); |
| 115 | |
Bryan Schumaker | 19d87ca | 2012-07-30 16:05:21 -0400 | [diff] [blame] | 116 | void nfs_clear_inode(struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | { |
Trond Myklebust | da6d503 | 2006-06-01 17:26:35 -0400 | [diff] [blame] | 118 | /* |
| 119 | * The following should never happen... |
| 120 | */ |
Trond Myklebust | f48407d | 2012-10-15 16:19:30 -0400 | [diff] [blame] | 121 | WARN_ON_ONCE(nfs_have_writebacks(inode)); |
| 122 | WARN_ON_ONCE(!list_empty(&NFS_I(inode)->open_files)); |
Trond Myklebust | ada70d9 | 2005-06-22 17:16:22 +0000 | [diff] [blame] | 123 | nfs_zap_acl_cache(inode); |
Trond Myklebust | 1c3c07e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 124 | nfs_access_zap_cache(inode); |
David Howells | f1fe29b | 2013-09-27 11:20:03 +0100 | [diff] [blame] | 125 | nfs_fscache_clear_inode(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 127 | EXPORT_SYMBOL_GPL(nfs_clear_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
Al Viro | b57922d | 2010-06-07 14:34:48 -0400 | [diff] [blame] | 129 | void nfs_evict_inode(struct inode *inode) |
| 130 | { |
| 131 | truncate_inode_pages(&inode->i_data, 0); |
Jan Kara | dbd5768 | 2012-05-03 14:48:02 +0200 | [diff] [blame] | 132 | clear_inode(inode); |
Al Viro | b57922d | 2010-06-07 14:34:48 -0400 | [diff] [blame] | 133 | nfs_clear_inode(inode); |
| 134 | } |
| 135 | |
Trond Myklebust | 29884df | 2005-12-13 16:13:54 -0500 | [diff] [blame] | 136 | /** |
| 137 | * nfs_sync_mapping - helper to flush all mmapped dirty data to disk |
| 138 | */ |
| 139 | int nfs_sync_mapping(struct address_space *mapping) |
| 140 | { |
Trond Myklebust | 5cf9521 | 2010-02-19 17:03:29 -0800 | [diff] [blame] | 141 | int ret = 0; |
Trond Myklebust | 29884df | 2005-12-13 16:13:54 -0500 | [diff] [blame] | 142 | |
Trond Myklebust | 5cf9521 | 2010-02-19 17:03:29 -0800 | [diff] [blame] | 143 | if (mapping->nrpages != 0) { |
| 144 | unmap_mapping_range(mapping, 0, 0, 0); |
| 145 | ret = nfs_wb_all(mapping->host); |
| 146 | } |
Trond Myklebust | 29884df | 2005-12-13 16:13:54 -0500 | [diff] [blame] | 147 | return ret; |
| 148 | } |
| 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | /* |
| 151 | * Invalidate the local caches |
| 152 | */ |
Trond Myklebust | b37b03b | 2005-11-25 17:10:06 -0500 | [diff] [blame] | 153 | static void nfs_zap_caches_locked(struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | { |
| 155 | struct nfs_inode *nfsi = NFS_I(inode); |
| 156 | int mode = inode->i_mode; |
| 157 | |
Chuck Lever | 91d5b47 | 2006-03-20 13:44:14 -0500 | [diff] [blame] | 158 | nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE); |
| 159 | |
Trond Myklebust | c7c2097 | 2007-09-28 19:22:40 -0400 | [diff] [blame] | 160 | nfsi->attrtimeo = NFS_MINATTRTIMEO(inode); |
| 161 | nfsi->attrtimeo_timestamp = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
Trond Myklebust | c3f52af | 2012-09-03 14:56:02 -0400 | [diff] [blame] | 163 | memset(NFS_I(inode)->cookieverf, 0, sizeof(NFS_I(inode)->cookieverf)); |
David Howells | de242c0 | 2012-12-20 21:52:38 +0000 | [diff] [blame] | 164 | if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) { |
David Howells | de242c0 | 2012-12-20 21:52:38 +0000 | [diff] [blame] | 165 | nfs_fscache_invalidate(inode); |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 166 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR |
| 167 | | NFS_INO_INVALID_LABEL |
| 168 | | NFS_INO_INVALID_DATA |
| 169 | | NFS_INO_INVALID_ACCESS |
| 170 | | NFS_INO_INVALID_ACL |
| 171 | | NFS_INO_REVAL_PAGECACHE; |
| 172 | } else |
| 173 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR |
| 174 | | NFS_INO_INVALID_LABEL |
| 175 | | NFS_INO_INVALID_ACCESS |
| 176 | | NFS_INO_INVALID_ACL |
| 177 | | NFS_INO_REVAL_PAGECACHE; |
Trond Myklebust | b37b03b | 2005-11-25 17:10:06 -0500 | [diff] [blame] | 178 | } |
Chuck Lever | dc59250 | 2005-08-18 11:24:12 -0700 | [diff] [blame] | 179 | |
Trond Myklebust | b37b03b | 2005-11-25 17:10:06 -0500 | [diff] [blame] | 180 | void nfs_zap_caches(struct inode *inode) |
| 181 | { |
| 182 | spin_lock(&inode->i_lock); |
| 183 | nfs_zap_caches_locked(inode); |
Chuck Lever | dc59250 | 2005-08-18 11:24:12 -0700 | [diff] [blame] | 184 | spin_unlock(&inode->i_lock); |
Trond Myklebust | ada70d9 | 2005-06-22 17:16:22 +0000 | [diff] [blame] | 185 | } |
| 186 | |
Trond Myklebust | cd9ae2b | 2006-10-19 23:28:40 -0700 | [diff] [blame] | 187 | void nfs_zap_mapping(struct inode *inode, struct address_space *mapping) |
| 188 | { |
| 189 | if (mapping->nrpages != 0) { |
| 190 | spin_lock(&inode->i_lock); |
| 191 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_DATA; |
David Howells | de242c0 | 2012-12-20 21:52:38 +0000 | [diff] [blame] | 192 | nfs_fscache_invalidate(inode); |
Trond Myklebust | cd9ae2b | 2006-10-19 23:28:40 -0700 | [diff] [blame] | 193 | spin_unlock(&inode->i_lock); |
| 194 | } |
| 195 | } |
| 196 | |
Trond Myklebust | f41f741 | 2008-06-11 17:39:04 -0400 | [diff] [blame] | 197 | void nfs_zap_acl_cache(struct inode *inode) |
Trond Myklebust | ada70d9 | 2005-06-22 17:16:22 +0000 | [diff] [blame] | 198 | { |
| 199 | void (*clear_acl_cache)(struct inode *); |
| 200 | |
| 201 | clear_acl_cache = NFS_PROTO(inode)->clear_acl_cache; |
| 202 | if (clear_acl_cache != NULL) |
| 203 | clear_acl_cache(inode); |
Chuck Lever | dc59250 | 2005-08-18 11:24:12 -0700 | [diff] [blame] | 204 | spin_lock(&inode->i_lock); |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 205 | NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_ACL; |
Chuck Lever | dc59250 | 2005-08-18 11:24:12 -0700 | [diff] [blame] | 206 | spin_unlock(&inode->i_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | } |
Bryan Schumaker | 1c606fb | 2012-07-30 16:05:24 -0400 | [diff] [blame] | 208 | EXPORT_SYMBOL_GPL(nfs_zap_acl_cache); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
Trond Myklebust | c481299 | 2007-09-28 17:11:45 -0400 | [diff] [blame] | 210 | void nfs_invalidate_atime(struct inode *inode) |
| 211 | { |
| 212 | spin_lock(&inode->i_lock); |
| 213 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATIME; |
| 214 | spin_unlock(&inode->i_lock); |
| 215 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 216 | EXPORT_SYMBOL_GPL(nfs_invalidate_atime); |
Trond Myklebust | c481299 | 2007-09-28 17:11:45 -0400 | [diff] [blame] | 217 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | /* |
Trond Myklebust | b37b03b | 2005-11-25 17:10:06 -0500 | [diff] [blame] | 219 | * Invalidate, but do not unhash, the inode. |
| 220 | * NB: must be called with inode->i_lock held! |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | */ |
Trond Myklebust | b37b03b | 2005-11-25 17:10:06 -0500 | [diff] [blame] | 222 | static void nfs_invalidate_inode(struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | { |
Benny Halevy | 3a10c30 | 2008-01-23 08:58:59 +0200 | [diff] [blame] | 224 | set_bit(NFS_INO_STALE, &NFS_I(inode)->flags); |
Trond Myklebust | b37b03b | 2005-11-25 17:10:06 -0500 | [diff] [blame] | 225 | nfs_zap_caches_locked(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | struct nfs_find_desc { |
| 229 | struct nfs_fh *fh; |
| 230 | struct nfs_fattr *fattr; |
| 231 | }; |
| 232 | |
| 233 | /* |
| 234 | * In NFSv3 we can have 64bit inode numbers. In order to support |
| 235 | * this, and re-exported directories (also seen in NFSv2) |
| 236 | * we are forced to allow 2 different inodes to have the same |
| 237 | * i_ino. |
| 238 | */ |
| 239 | static int |
| 240 | nfs_find_actor(struct inode *inode, void *opaque) |
| 241 | { |
| 242 | struct nfs_find_desc *desc = (struct nfs_find_desc *)opaque; |
| 243 | struct nfs_fh *fh = desc->fh; |
| 244 | struct nfs_fattr *fattr = desc->fattr; |
| 245 | |
| 246 | if (NFS_FILEID(inode) != fattr->fileid) |
| 247 | return 0; |
Jeff Layton | f6488c9 | 2013-02-27 20:10:34 -0500 | [diff] [blame] | 248 | if ((S_IFMT & inode->i_mode) != (S_IFMT & fattr->mode)) |
| 249 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | if (nfs_compare_fh(NFS_FH(inode), fh)) |
| 251 | return 0; |
| 252 | if (is_bad_inode(inode) || NFS_STALE(inode)) |
| 253 | return 0; |
| 254 | return 1; |
| 255 | } |
| 256 | |
| 257 | static int |
| 258 | nfs_init_locked(struct inode *inode, void *opaque) |
| 259 | { |
| 260 | struct nfs_find_desc *desc = (struct nfs_find_desc *)opaque; |
| 261 | struct nfs_fattr *fattr = desc->fattr; |
| 262 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 263 | set_nfs_fileid(inode, fattr->fileid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | nfs_copy_fh(NFS_FH(inode), desc->fh); |
| 265 | return 0; |
| 266 | } |
| 267 | |
Steve Dickson | e058f70 | 2013-05-22 12:50:40 -0400 | [diff] [blame] | 268 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 269 | void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr, |
| 270 | struct nfs4_label *label) |
| 271 | { |
| 272 | int error; |
| 273 | |
| 274 | if (label == NULL) |
| 275 | return; |
| 276 | |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 277 | if ((fattr->valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL) && inode->i_security) { |
| 278 | error = security_inode_notifysecctx(inode, label->label, |
| 279 | label->len); |
| 280 | if (error) |
| 281 | printk(KERN_ERR "%s() %s %d " |
| 282 | "security_inode_notifysecctx() %d\n", |
| 283 | __func__, |
| 284 | (char *)label->label, |
| 285 | label->len, error); |
| 286 | } |
| 287 | } |
| 288 | |
Steve Dickson | e058f70 | 2013-05-22 12:50:40 -0400 | [diff] [blame] | 289 | struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags) |
| 290 | { |
| 291 | struct nfs4_label *label = NULL; |
| 292 | int minor_version = server->nfs_client->cl_minorversion; |
| 293 | |
| 294 | if (minor_version < 2) |
| 295 | return label; |
| 296 | |
| 297 | if (!(server->caps & NFS_CAP_SECURITY_LABEL)) |
| 298 | return label; |
| 299 | |
| 300 | label = kzalloc(sizeof(struct nfs4_label), flags); |
| 301 | if (label == NULL) |
| 302 | return ERR_PTR(-ENOMEM); |
| 303 | |
| 304 | label->label = kzalloc(NFS4_MAXLABELLEN, flags); |
| 305 | if (label->label == NULL) { |
| 306 | kfree(label); |
| 307 | return ERR_PTR(-ENOMEM); |
| 308 | } |
| 309 | label->len = NFS4_MAXLABELLEN; |
| 310 | |
| 311 | return label; |
| 312 | } |
| 313 | EXPORT_SYMBOL_GPL(nfs4_label_alloc); |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 314 | #else |
Trond Myklebust | 829e57d | 2013-11-18 14:33:50 -0500 | [diff] [blame] | 315 | void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr, |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 316 | struct nfs4_label *label) |
| 317 | { |
| 318 | } |
Steve Dickson | e058f70 | 2013-05-22 12:50:40 -0400 | [diff] [blame] | 319 | #endif |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 320 | EXPORT_SYMBOL_GPL(nfs_setsecurity); |
Steve Dickson | e058f70 | 2013-05-22 12:50:40 -0400 | [diff] [blame] | 321 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | /* |
| 323 | * This is our front-end to iget that looks up inodes by file handle |
| 324 | * instead of inode number. |
| 325 | */ |
| 326 | struct inode * |
David Quigley | 1775fd3 | 2013-05-22 12:50:42 -0400 | [diff] [blame] | 327 | nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, struct nfs4_label *label) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | { |
| 329 | struct nfs_find_desc desc = { |
| 330 | .fh = fh, |
| 331 | .fattr = fattr |
| 332 | }; |
Trond Myklebust | 03f28e3 | 2006-03-20 13:44:48 -0500 | [diff] [blame] | 333 | struct inode *inode = ERR_PTR(-ENOENT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | unsigned long hash; |
| 335 | |
Bryan Schumaker | 7ebb931 | 2011-03-24 17:12:30 +0000 | [diff] [blame] | 336 | nfs_attr_check_mountpoint(sb, fattr); |
| 337 | |
Andy Adamson | 533eb46 | 2011-06-13 18:25:56 -0400 | [diff] [blame] | 338 | if (((fattr->valid & NFS_ATTR_FATTR_FILEID) == 0) && |
| 339 | !nfs_attr_use_mounted_on_fileid(fattr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | goto out_no_inode; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 341 | if ((fattr->valid & NFS_ATTR_FATTR_TYPE) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | goto out_no_inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | |
| 344 | hash = nfs_fattr_to_ino_t(fattr); |
| 345 | |
Trond Myklebust | 03f28e3 | 2006-03-20 13:44:48 -0500 | [diff] [blame] | 346 | inode = iget5_locked(sb, hash, nfs_find_actor, nfs_init_locked, &desc); |
| 347 | if (inode == NULL) { |
| 348 | inode = ERR_PTR(-ENOMEM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | goto out_no_inode; |
Trond Myklebust | 03f28e3 | 2006-03-20 13:44:48 -0500 | [diff] [blame] | 350 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | |
| 352 | if (inode->i_state & I_NEW) { |
| 353 | struct nfs_inode *nfsi = NFS_I(inode); |
Trond Myklebust | b0c4fdd | 2007-02-05 14:44:22 -0800 | [diff] [blame] | 354 | unsigned long now = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | |
| 356 | /* We set i_ino for the few things that still rely on it, |
| 357 | * such as stat(2) */ |
| 358 | inode->i_ino = hash; |
| 359 | |
| 360 | /* We can't support update_atime(), since the server will reset it */ |
| 361 | inode->i_flags |= S_NOATIME|S_NOCMTIME; |
| 362 | inode->i_mode = fattr->mode; |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 363 | if ((fattr->valid & NFS_ATTR_FATTR_MODE) == 0 |
| 364 | && nfs_server_capable(inode, NFS_CAP_MODE)) |
Trond Myklebust | 4124bbc | 2012-04-27 13:48:17 -0400 | [diff] [blame] | 365 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | /* Why so? Because we want revalidate for devices/FIFOs, and |
| 367 | * that's precisely what we have in nfs_file_inode_operations. |
| 368 | */ |
David Howells | 8fa5c00 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 369 | inode->i_op = NFS_SB(sb)->nfs_client->rpc_ops->file_inode_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | if (S_ISREG(inode->i_mode)) { |
Jeff Layton | 1788ea6 | 2011-11-04 13:31:21 -0400 | [diff] [blame] | 371 | inode->i_fop = NFS_SB(sb)->nfs_client->rpc_ops->file_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | inode->i_data.a_ops = &nfs_file_aops; |
| 373 | inode->i_data.backing_dev_info = &NFS_SB(sb)->backing_dev_info; |
| 374 | } else if (S_ISDIR(inode->i_mode)) { |
David Howells | 8fa5c00 | 2006-08-22 20:06:12 -0400 | [diff] [blame] | 375 | inode->i_op = NFS_SB(sb)->nfs_client->rpc_ops->dir_inode_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | inode->i_fop = &nfs_dir_operations; |
Trond Myklebust | 11de3b1 | 2010-12-01 14:17:06 -0500 | [diff] [blame] | 377 | inode->i_data.a_ops = &nfs_dir_aops; |
Trond Myklebust | 55a9759 | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 378 | /* Deal with crossing mountpoints */ |
Bryan Schumaker | 7ebb931 | 2011-03-24 17:12:30 +0000 | [diff] [blame] | 379 | if (fattr->valid & NFS_ATTR_FATTR_MOUNTPOINT || |
| 380 | fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) { |
Manoj Naik | 6b97fd3 | 2006-06-09 09:34:29 -0400 | [diff] [blame] | 381 | if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) |
| 382 | inode->i_op = &nfs_referral_inode_operations; |
| 383 | else |
| 384 | inode->i_op = &nfs_mountpoint_inode_operations; |
Trond Myklebust | 55a9759 | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 385 | inode->i_fop = NULL; |
David Howells | 36d43a4 | 2011-01-14 18:45:42 +0000 | [diff] [blame] | 386 | inode->i_flags |= S_AUTOMOUNT; |
Trond Myklebust | 55a9759 | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 387 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | } else if (S_ISLNK(inode->i_mode)) |
| 389 | inode->i_op = &nfs_symlink_inode_operations; |
| 390 | else |
| 391 | init_special_inode(inode, inode->i_mode, fattr->rdev); |
| 392 | |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 393 | memset(&inode->i_atime, 0, sizeof(inode->i_atime)); |
| 394 | memset(&inode->i_mtime, 0, sizeof(inode->i_mtime)); |
| 395 | memset(&inode->i_ctime, 0, sizeof(inode->i_ctime)); |
Trond Myklebust | a9a4a87 | 2011-10-17 16:08:46 -0700 | [diff] [blame] | 396 | inode->i_version = 0; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 397 | inode->i_size = 0; |
Miklos Szeredi | 6d6b77f | 2011-10-28 14:13:28 +0200 | [diff] [blame] | 398 | clear_nlink(inode); |
Eric W. Biederman | 9ff593c | 2013-02-01 14:26:23 -0800 | [diff] [blame] | 399 | inode->i_uid = make_kuid(&init_user_ns, -2); |
| 400 | inode->i_gid = make_kgid(&init_user_ns, -2); |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 401 | inode->i_blocks = 0; |
| 402 | memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf)); |
Andy Adamson | 2701d08 | 2012-05-24 13:13:24 -0400 | [diff] [blame] | 403 | nfsi->write_io = 0; |
| 404 | nfsi->read_io = 0; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 405 | |
Trond Myklebust | 3380114 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 406 | nfsi->read_cache_jiffies = fattr->time_start; |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 407 | nfsi->attr_gencount = fattr->gencount; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 408 | if (fattr->valid & NFS_ATTR_FATTR_ATIME) |
| 409 | inode->i_atime = fattr->atime; |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 410 | else if (nfs_server_capable(inode, NFS_CAP_ATIME)) |
| 411 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 412 | if (fattr->valid & NFS_ATTR_FATTR_MTIME) |
| 413 | inode->i_mtime = fattr->mtime; |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 414 | else if (nfs_server_capable(inode, NFS_CAP_MTIME)) |
Trond Myklebust | 4124bbc | 2012-04-27 13:48:17 -0400 | [diff] [blame] | 415 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 416 | if (fattr->valid & NFS_ATTR_FATTR_CTIME) |
| 417 | inode->i_ctime = fattr->ctime; |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 418 | else if (nfs_server_capable(inode, NFS_CAP_CTIME)) |
Trond Myklebust | 4124bbc | 2012-04-27 13:48:17 -0400 | [diff] [blame] | 419 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 420 | if (fattr->valid & NFS_ATTR_FATTR_CHANGE) |
Trond Myklebust | a9a4a87 | 2011-10-17 16:08:46 -0700 | [diff] [blame] | 421 | inode->i_version = fattr->change_attr; |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 422 | else if (nfs_server_capable(inode, NFS_CAP_CHANGE_ATTR)) |
Trond Myklebust | 4124bbc | 2012-04-27 13:48:17 -0400 | [diff] [blame] | 423 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 424 | if (fattr->valid & NFS_ATTR_FATTR_SIZE) |
| 425 | inode->i_size = nfs_size_to_loff_t(fattr->size); |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 426 | else |
| 427 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 428 | | NFS_INO_REVAL_PAGECACHE; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 429 | if (fattr->valid & NFS_ATTR_FATTR_NLINK) |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 430 | set_nlink(inode, fattr->nlink); |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 431 | else if (nfs_server_capable(inode, NFS_CAP_NLINK)) |
| 432 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 433 | if (fattr->valid & NFS_ATTR_FATTR_OWNER) |
| 434 | inode->i_uid = fattr->uid; |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 435 | else if (nfs_server_capable(inode, NFS_CAP_OWNER)) |
Trond Myklebust | 4124bbc | 2012-04-27 13:48:17 -0400 | [diff] [blame] | 436 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 437 | if (fattr->valid & NFS_ATTR_FATTR_GROUP) |
| 438 | inode->i_gid = fattr->gid; |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 439 | else if (nfs_server_capable(inode, NFS_CAP_OWNER_GROUP)) |
Trond Myklebust | 4124bbc | 2012-04-27 13:48:17 -0400 | [diff] [blame] | 440 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 441 | if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED) |
| 442 | inode->i_blocks = fattr->du.nfs2.blocks; |
| 443 | if (fattr->valid & NFS_ATTR_FATTR_SPACE_USED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | /* |
| 445 | * report the blocks in 512byte units |
| 446 | */ |
| 447 | inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | } |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 449 | |
| 450 | nfs_setsecurity(inode, fattr, label); |
| 451 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | nfsi->attrtimeo = NFS_MINATTRTIMEO(inode); |
Trond Myklebust | b0c4fdd | 2007-02-05 14:44:22 -0800 | [diff] [blame] | 453 | nfsi->attrtimeo_timestamp = now; |
Trond Myklebust | 1c3c07e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 454 | nfsi->access_cache = RB_ROOT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | |
David Howells | f1fe29b | 2013-09-27 11:20:03 +0100 | [diff] [blame] | 456 | nfs_fscache_init_inode(inode); |
David Howells | ef79c09 | 2009-04-03 16:42:43 +0100 | [diff] [blame] | 457 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | unlock_new_inode(inode); |
| 459 | } else |
| 460 | nfs_refresh_inode(inode, fattr); |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 461 | dprintk("NFS: nfs_fhget(%s/%Lu fh_crc=0x%08x ct=%d)\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | inode->i_sb->s_id, |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 463 | (unsigned long long)NFS_FILEID(inode), |
Weston Andros Adamson | 4f1abd2 | 2012-03-06 21:58:20 -0500 | [diff] [blame] | 464 | nfs_display_fhandle_hash(fh), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | atomic_read(&inode->i_count)); |
| 466 | |
| 467 | out: |
| 468 | return inode; |
| 469 | |
| 470 | out_no_inode: |
Trond Myklebust | 03f28e3 | 2006-03-20 13:44:48 -0500 | [diff] [blame] | 471 | dprintk("nfs_fhget: iget failed with error %ld\n", PTR_ERR(inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | goto out; |
| 473 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 474 | EXPORT_SYMBOL_GPL(nfs_fhget); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | |
Trond Myklebust | 536e43d | 2012-01-17 22:04:26 -0500 | [diff] [blame] | 476 | #define NFS_VALID_ATTRS (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_ATIME|ATTR_ATIME_SET|ATTR_MTIME|ATTR_MTIME_SET|ATTR_FILE|ATTR_OPEN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | |
| 478 | int |
| 479 | nfs_setattr(struct dentry *dentry, struct iattr *attr) |
| 480 | { |
| 481 | struct inode *inode = dentry->d_inode; |
Trond Myklebust | 987f8df | 2010-04-16 16:22:52 -0400 | [diff] [blame] | 482 | struct nfs_fattr *fattr; |
| 483 | int error = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | |
Chuck Lever | 91d5b47 | 2006-03-20 13:44:14 -0500 | [diff] [blame] | 485 | nfs_inc_stats(inode, NFSIOS_VFSSETATTR); |
| 486 | |
Jeff Layton | 188b95d | 2007-10-18 03:05:21 -0700 | [diff] [blame] | 487 | /* skip mode change if it's just for clearing setuid/setgid */ |
| 488 | if (attr->ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID)) |
| 489 | attr->ia_valid &= ~ATTR_MODE; |
| 490 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | if (attr->ia_valid & ATTR_SIZE) { |
| 492 | if (!S_ISREG(inode->i_mode) || attr->ia_size == i_size_read(inode)) |
| 493 | attr->ia_valid &= ~ATTR_SIZE; |
| 494 | } |
| 495 | |
| 496 | /* Optimization: if the end result is no change, don't RPC */ |
| 497 | attr->ia_valid &= NFS_VALID_ATTRS; |
Trond Myklebust | 536e43d | 2012-01-17 22:04:26 -0500 | [diff] [blame] | 498 | if ((attr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | return 0; |
| 500 | |
Trond Myklebust | f4ce129 | 2013-08-19 18:59:33 -0400 | [diff] [blame] | 501 | trace_nfs_setattr_enter(inode); |
| 502 | |
Trond Myklebust | 755c1e2 | 2006-03-20 13:44:06 -0500 | [diff] [blame] | 503 | /* Write all dirty data */ |
Trond Myklebust | 1d59d61 | 2012-05-31 12:22:33 -0400 | [diff] [blame] | 504 | if (S_ISREG(inode->i_mode)) { |
| 505 | nfs_inode_dio_wait(inode); |
Trond Myklebust | e1552e1 | 2007-04-14 19:07:28 -0400 | [diff] [blame] | 506 | nfs_wb_all(inode); |
Trond Myklebust | 1d59d61 | 2012-05-31 12:22:33 -0400 | [diff] [blame] | 507 | } |
Trond Myklebust | 987f8df | 2010-04-16 16:22:52 -0400 | [diff] [blame] | 508 | |
| 509 | fattr = nfs_alloc_fattr(); |
| 510 | if (fattr == NULL) |
| 511 | goto out; |
Trond Myklebust | 642ac54 | 2005-10-18 14:20:19 -0700 | [diff] [blame] | 512 | /* |
| 513 | * Return any delegations if we're going to change ACLs |
| 514 | */ |
| 515 | if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) |
Bryan Schumaker | 57ec14c | 2012-06-20 15:53:44 -0400 | [diff] [blame] | 516 | NFS_PROTO(inode)->return_delegation(inode); |
Trond Myklebust | 987f8df | 2010-04-16 16:22:52 -0400 | [diff] [blame] | 517 | error = NFS_PROTO(inode)->setattr(dentry, fattr, attr); |
Trond Myklebust | 65e4308 | 2005-08-16 11:49:44 -0400 | [diff] [blame] | 518 | if (error == 0) |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 519 | error = nfs_refresh_inode(inode, fattr); |
Trond Myklebust | 987f8df | 2010-04-16 16:22:52 -0400 | [diff] [blame] | 520 | nfs_free_fattr(fattr); |
| 521 | out: |
Trond Myklebust | f4ce129 | 2013-08-19 18:59:33 -0400 | [diff] [blame] | 522 | trace_nfs_setattr_exit(inode, error); |
Trond Myklebust | 65e4308 | 2005-08-16 11:49:44 -0400 | [diff] [blame] | 523 | return error; |
| 524 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 525 | EXPORT_SYMBOL_GPL(nfs_setattr); |
Trond Myklebust | 65e4308 | 2005-08-16 11:49:44 -0400 | [diff] [blame] | 526 | |
| 527 | /** |
Trond Myklebust | a3d0145 | 2008-06-11 12:21:19 -0400 | [diff] [blame] | 528 | * nfs_vmtruncate - unmap mappings "freed" by truncate() syscall |
| 529 | * @inode: inode of the file used |
| 530 | * @offset: file offset to start truncating |
| 531 | * |
| 532 | * This is a copy of the common vmtruncate, but with the locking |
| 533 | * corrected to take into account the fact that NFS requires |
| 534 | * inode->i_size to be updated under the inode->i_lock. |
| 535 | */ |
| 536 | static int nfs_vmtruncate(struct inode * inode, loff_t offset) |
| 537 | { |
npiggin@suse.de | c08d3b0 | 2009-08-21 02:35:06 +1000 | [diff] [blame] | 538 | int err; |
Trond Myklebust | a3d0145 | 2008-06-11 12:21:19 -0400 | [diff] [blame] | 539 | |
npiggin@suse.de | c08d3b0 | 2009-08-21 02:35:06 +1000 | [diff] [blame] | 540 | err = inode_newsize_ok(inode, offset); |
| 541 | if (err) |
| 542 | goto out; |
Trond Myklebust | a3d0145 | 2008-06-11 12:21:19 -0400 | [diff] [blame] | 543 | |
npiggin@suse.de | c08d3b0 | 2009-08-21 02:35:06 +1000 | [diff] [blame] | 544 | spin_lock(&inode->i_lock); |
npiggin@suse.de | c08d3b0 | 2009-08-21 02:35:06 +1000 | [diff] [blame] | 545 | i_size_write(inode, offset); |
| 546 | spin_unlock(&inode->i_lock); |
Trond Myklebust | a3d0145 | 2008-06-11 12:21:19 -0400 | [diff] [blame] | 547 | |
Kirill A. Shutemov | 7caef26 | 2013-09-12 15:13:56 -0700 | [diff] [blame] | 548 | truncate_pagecache(inode, offset); |
npiggin@suse.de | c08d3b0 | 2009-08-21 02:35:06 +1000 | [diff] [blame] | 549 | out: |
| 550 | return err; |
Trond Myklebust | a3d0145 | 2008-06-11 12:21:19 -0400 | [diff] [blame] | 551 | } |
| 552 | |
| 553 | /** |
Trond Myklebust | 65e4308 | 2005-08-16 11:49:44 -0400 | [diff] [blame] | 554 | * nfs_setattr_update_inode - Update inode metadata after a setattr call. |
| 555 | * @inode: pointer to struct inode |
| 556 | * @attr: pointer to struct iattr |
| 557 | * |
| 558 | * Note: we do this in the *proc.c in order to ensure that |
| 559 | * it works for things like exclusive creates too. |
| 560 | */ |
| 561 | void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr) |
| 562 | { |
| 563 | if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) { |
Trond Myklebust | 2f28ea6 | 2008-10-05 14:26:11 -0400 | [diff] [blame] | 564 | spin_lock(&inode->i_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | if ((attr->ia_valid & ATTR_MODE) != 0) { |
Trond Myklebust | 65e4308 | 2005-08-16 11:49:44 -0400 | [diff] [blame] | 566 | int mode = attr->ia_mode & S_IALLUGO; |
| 567 | mode |= inode->i_mode & ~S_IALLUGO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | inode->i_mode = mode; |
| 569 | } |
| 570 | if ((attr->ia_valid & ATTR_UID) != 0) |
| 571 | inode->i_uid = attr->ia_uid; |
| 572 | if ((attr->ia_valid & ATTR_GID) != 0) |
| 573 | inode->i_gid = attr->ia_gid; |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 574 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL; |
Chuck Lever | dc59250 | 2005-08-18 11:24:12 -0700 | [diff] [blame] | 575 | spin_unlock(&inode->i_lock); |
Trond Myklebust | 65e4308 | 2005-08-16 11:49:44 -0400 | [diff] [blame] | 576 | } |
| 577 | if ((attr->ia_valid & ATTR_SIZE) != 0) { |
Chuck Lever | 91d5b47 | 2006-03-20 13:44:14 -0500 | [diff] [blame] | 578 | nfs_inc_stats(inode, NFSIOS_SETATTRTRUNC); |
Trond Myklebust | a3d0145 | 2008-06-11 12:21:19 -0400 | [diff] [blame] | 579 | nfs_vmtruncate(inode, attr->ia_size); |
Trond Myklebust | 65e4308 | 2005-08-16 11:49:44 -0400 | [diff] [blame] | 580 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 582 | EXPORT_SYMBOL_GPL(nfs_setattr_update_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) |
| 585 | { |
| 586 | struct inode *inode = dentry->d_inode; |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 587 | int need_atime = NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATIME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | int err; |
| 589 | |
Trond Myklebust | f4ce129 | 2013-08-19 18:59:33 -0400 | [diff] [blame] | 590 | trace_nfs_getattr_enter(inode); |
Trond Myklebust | acdc53b | 2010-02-19 17:03:26 -0800 | [diff] [blame] | 591 | /* Flush out writes to the server in order to update c/mtime. */ |
Chuck Lever | 28c494c | 2007-10-26 13:32:13 -0400 | [diff] [blame] | 592 | if (S_ISREG(inode->i_mode)) { |
Trond Myklebust | 1d59d61 | 2012-05-31 12:22:33 -0400 | [diff] [blame] | 593 | nfs_inode_dio_wait(inode); |
Trond Myklebust | acdc53b | 2010-02-19 17:03:26 -0800 | [diff] [blame] | 594 | err = filemap_write_and_wait(inode->i_mapping); |
| 595 | if (err) |
| 596 | goto out; |
Chuck Lever | 28c494c | 2007-10-26 13:32:13 -0400 | [diff] [blame] | 597 | } |
Christoph Hellwig | fc33a7b | 2006-01-09 20:52:17 -0800 | [diff] [blame] | 598 | |
| 599 | /* |
| 600 | * We may force a getattr if the user cares about atime. |
| 601 | * |
| 602 | * Note that we only have to check the vfsmount flags here: |
| 603 | * - NFS always sets S_NOATIME by so checking it would give a |
| 604 | * bogus result |
| 605 | * - NFS never sets MS_NOATIME or MS_NODIRATIME so there is |
| 606 | * no point in checking those. |
| 607 | */ |
| 608 | if ((mnt->mnt_flags & MNT_NOATIME) || |
| 609 | ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | need_atime = 0; |
Christoph Hellwig | fc33a7b | 2006-01-09 20:52:17 -0800 | [diff] [blame] | 611 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | if (need_atime) |
| 613 | err = __nfs_revalidate_inode(NFS_SERVER(inode), inode); |
| 614 | else |
| 615 | err = nfs_revalidate_inode(NFS_SERVER(inode), inode); |
Peter Staubach | 4e769b9 | 2007-08-03 15:07:10 -0400 | [diff] [blame] | 616 | if (!err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | generic_fillattr(inode, stat); |
Trond Myklebust | f43bf0b | 2007-10-09 12:01:04 -0400 | [diff] [blame] | 618 | stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode)); |
Peter Staubach | 4e769b9 | 2007-08-03 15:07:10 -0400 | [diff] [blame] | 619 | } |
Trond Myklebust | acdc53b | 2010-02-19 17:03:26 -0800 | [diff] [blame] | 620 | out: |
Trond Myklebust | f4ce129 | 2013-08-19 18:59:33 -0400 | [diff] [blame] | 621 | trace_nfs_getattr_exit(inode, err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | return err; |
| 623 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 624 | EXPORT_SYMBOL_GPL(nfs_getattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 626 | static void nfs_init_lock_context(struct nfs_lock_context *l_ctx) |
| 627 | { |
| 628 | atomic_set(&l_ctx->count, 1); |
Trond Myklebust | 2a36915 | 2012-08-13 18:54:45 -0400 | [diff] [blame] | 629 | l_ctx->lockowner.l_owner = current->files; |
| 630 | l_ctx->lockowner.l_pid = current->tgid; |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 631 | INIT_LIST_HEAD(&l_ctx->list); |
Trond Myklebust | 577b423 | 2013-04-08 21:38:12 -0400 | [diff] [blame] | 632 | nfs_iocounter_init(&l_ctx->io_count); |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 633 | } |
| 634 | |
| 635 | static struct nfs_lock_context *__nfs_find_lock_context(struct nfs_open_context *ctx) |
| 636 | { |
Trond Myklebust | 8c86899 | 2013-03-15 18:11:31 -0400 | [diff] [blame] | 637 | struct nfs_lock_context *head = &ctx->lock_context; |
| 638 | struct nfs_lock_context *pos = head; |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 639 | |
Trond Myklebust | 8c86899 | 2013-03-15 18:11:31 -0400 | [diff] [blame] | 640 | do { |
Trond Myklebust | 2a36915 | 2012-08-13 18:54:45 -0400 | [diff] [blame] | 641 | if (pos->lockowner.l_owner != current->files) |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 642 | continue; |
Trond Myklebust | 2a36915 | 2012-08-13 18:54:45 -0400 | [diff] [blame] | 643 | if (pos->lockowner.l_pid != current->tgid) |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 644 | continue; |
| 645 | atomic_inc(&pos->count); |
| 646 | return pos; |
Trond Myklebust | 8c86899 | 2013-03-15 18:11:31 -0400 | [diff] [blame] | 647 | } while ((pos = list_entry(pos->list.next, typeof(*pos), list)) != head); |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 648 | return NULL; |
| 649 | } |
| 650 | |
| 651 | struct nfs_lock_context *nfs_get_lock_context(struct nfs_open_context *ctx) |
| 652 | { |
| 653 | struct nfs_lock_context *res, *new = NULL; |
Al Viro | 3d4ff43 | 2011-06-22 18:40:12 -0400 | [diff] [blame] | 654 | struct inode *inode = ctx->dentry->d_inode; |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 655 | |
| 656 | spin_lock(&inode->i_lock); |
| 657 | res = __nfs_find_lock_context(ctx); |
| 658 | if (res == NULL) { |
| 659 | spin_unlock(&inode->i_lock); |
| 660 | new = kmalloc(sizeof(*new), GFP_KERNEL); |
| 661 | if (new == NULL) |
Trond Myklebust | b3c54de | 2012-08-13 17:15:50 -0400 | [diff] [blame] | 662 | return ERR_PTR(-ENOMEM); |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 663 | nfs_init_lock_context(new); |
| 664 | spin_lock(&inode->i_lock); |
| 665 | res = __nfs_find_lock_context(ctx); |
| 666 | if (res == NULL) { |
| 667 | list_add_tail(&new->list, &ctx->lock_context.list); |
| 668 | new->open_context = ctx; |
| 669 | res = new; |
| 670 | new = NULL; |
| 671 | } |
| 672 | } |
| 673 | spin_unlock(&inode->i_lock); |
| 674 | kfree(new); |
| 675 | return res; |
| 676 | } |
| 677 | |
| 678 | void nfs_put_lock_context(struct nfs_lock_context *l_ctx) |
| 679 | { |
| 680 | struct nfs_open_context *ctx = l_ctx->open_context; |
Al Viro | 3d4ff43 | 2011-06-22 18:40:12 -0400 | [diff] [blame] | 681 | struct inode *inode = ctx->dentry->d_inode; |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 682 | |
| 683 | if (!atomic_dec_and_lock(&l_ctx->count, &inode->i_lock)) |
| 684 | return; |
| 685 | list_del(&l_ctx->list); |
| 686 | spin_unlock(&inode->i_lock); |
| 687 | kfree(l_ctx); |
| 688 | } |
| 689 | |
Trond Myklebust | 7fe5c39 | 2009-03-19 15:35:50 -0400 | [diff] [blame] | 690 | /** |
| 691 | * nfs_close_context - Common close_context() routine NFSv2/v3 |
| 692 | * @ctx: pointer to context |
| 693 | * @is_sync: is this a synchronous close |
| 694 | * |
| 695 | * always ensure that the attributes are up to date if we're mounted |
| 696 | * with close-to-open semantics |
| 697 | */ |
| 698 | void nfs_close_context(struct nfs_open_context *ctx, int is_sync) |
| 699 | { |
| 700 | struct inode *inode; |
| 701 | struct nfs_server *server; |
| 702 | |
| 703 | if (!(ctx->mode & FMODE_WRITE)) |
| 704 | return; |
| 705 | if (!is_sync) |
| 706 | return; |
Al Viro | 3d4ff43 | 2011-06-22 18:40:12 -0400 | [diff] [blame] | 707 | inode = ctx->dentry->d_inode; |
Trond Myklebust | 7fe5c39 | 2009-03-19 15:35:50 -0400 | [diff] [blame] | 708 | if (!list_empty(&NFS_I(inode)->open_files)) |
| 709 | return; |
| 710 | server = NFS_SERVER(inode); |
| 711 | if (server->flags & NFS_MOUNT_NOCTO) |
| 712 | return; |
| 713 | nfs_revalidate_inode(server, inode); |
| 714 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 715 | EXPORT_SYMBOL_GPL(nfs_close_context); |
Trond Myklebust | 7fe5c39 | 2009-03-19 15:35:50 -0400 | [diff] [blame] | 716 | |
Al Viro | 5ede7b1 | 2011-10-23 18:49:54 -0400 | [diff] [blame] | 717 | struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, fmode_t f_mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | { |
| 719 | struct nfs_open_context *ctx; |
Al Viro | 5ede7b1 | 2011-10-23 18:49:54 -0400 | [diff] [blame] | 720 | struct rpc_cred *cred = rpc_lookup_cred(); |
| 721 | if (IS_ERR(cred)) |
| 722 | return ERR_CAST(cred); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | |
Panagiotis Issaris | f52720c | 2006-09-27 01:49:39 -0700 | [diff] [blame] | 724 | ctx = kmalloc(sizeof(*ctx), GFP_KERNEL); |
Al Viro | 5ede7b1 | 2011-10-23 18:49:54 -0400 | [diff] [blame] | 725 | if (!ctx) { |
| 726 | put_rpccred(cred); |
| 727 | return ERR_PTR(-ENOMEM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | } |
Al Viro | 5ede7b1 | 2011-10-23 18:49:54 -0400 | [diff] [blame] | 729 | nfs_sb_active(dentry->d_sb); |
| 730 | ctx->dentry = dget(dentry); |
| 731 | ctx->cred = cred; |
| 732 | ctx->state = NULL; |
| 733 | ctx->mode = f_mode; |
| 734 | ctx->flags = 0; |
| 735 | ctx->error = 0; |
| 736 | nfs_init_lock_context(&ctx->lock_context); |
| 737 | ctx->lock_context.open_context = ctx; |
| 738 | INIT_LIST_HEAD(&ctx->list); |
Andy Adamson | 82be417 | 2012-05-23 05:02:35 -0400 | [diff] [blame] | 739 | ctx->mdsthreshold = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | return ctx; |
| 741 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 742 | EXPORT_SYMBOL_GPL(alloc_nfs_open_context); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | |
| 744 | struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx) |
| 745 | { |
| 746 | if (ctx != NULL) |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 747 | atomic_inc(&ctx->lock_context.count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | return ctx; |
| 749 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 750 | EXPORT_SYMBOL_GPL(get_nfs_open_context); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | |
Trond Myklebust | 7fe5c39 | 2009-03-19 15:35:50 -0400 | [diff] [blame] | 752 | static void __put_nfs_open_context(struct nfs_open_context *ctx, int is_sync) |
Trond Myklebust | 3bec63d | 2007-06-17 16:02:44 -0400 | [diff] [blame] | 753 | { |
Al Viro | 3d4ff43 | 2011-06-22 18:40:12 -0400 | [diff] [blame] | 754 | struct inode *inode = ctx->dentry->d_inode; |
| 755 | struct super_block *sb = ctx->dentry->d_sb; |
Trond Myklebust | 3bec63d | 2007-06-17 16:02:44 -0400 | [diff] [blame] | 756 | |
Trond Myklebust | 5c78f58 | 2010-09-27 15:51:20 -0400 | [diff] [blame] | 757 | if (!list_empty(&ctx->list)) { |
Benny Halevy | ef84303 | 2010-09-23 12:22:09 -0400 | [diff] [blame] | 758 | if (!atomic_dec_and_lock(&ctx->lock_context.count, &inode->i_lock)) |
| 759 | return; |
| 760 | list_del(&ctx->list); |
| 761 | spin_unlock(&inode->i_lock); |
Benny Halevy | ef84303 | 2010-09-23 12:22:09 -0400 | [diff] [blame] | 762 | } else if (!atomic_dec_and_test(&ctx->lock_context.count)) |
Trond Myklebust | 5e11934 | 2007-07-26 12:06:17 -0400 | [diff] [blame] | 763 | return; |
Trond Myklebust | 5c78f58 | 2010-09-27 15:51:20 -0400 | [diff] [blame] | 764 | if (inode != NULL) |
| 765 | NFS_PROTO(inode)->close_context(ctx, is_sync); |
Trond Myklebust | 3bec63d | 2007-06-17 16:02:44 -0400 | [diff] [blame] | 766 | if (ctx->cred != NULL) |
| 767 | put_rpccred(ctx->cred); |
Al Viro | 3d4ff43 | 2011-06-22 18:40:12 -0400 | [diff] [blame] | 768 | dput(ctx->dentry); |
Trond Myklebust | 322b2b9 | 2013-01-11 16:39:51 -0500 | [diff] [blame] | 769 | nfs_sb_deactive(sb); |
Andy Adamson | 82be417 | 2012-05-23 05:02:35 -0400 | [diff] [blame] | 770 | kfree(ctx->mdsthreshold); |
Trond Myklebust | 3bec63d | 2007-06-17 16:02:44 -0400 | [diff] [blame] | 771 | kfree(ctx); |
| 772 | } |
| 773 | |
Trond Myklebust | a49c3c7 | 2007-10-18 18:03:27 -0400 | [diff] [blame] | 774 | void put_nfs_open_context(struct nfs_open_context *ctx) |
| 775 | { |
| 776 | __put_nfs_open_context(ctx, 0); |
| 777 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 778 | EXPORT_SYMBOL_GPL(put_nfs_open_context); |
Trond Myklebust | a49c3c7 | 2007-10-18 18:03:27 -0400 | [diff] [blame] | 779 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | /* |
| 781 | * Ensure that mmap has a recent RPC credential for use when writing out |
| 782 | * shared pages |
| 783 | */ |
Trond Myklebust | c45ffdd | 2013-05-29 13:34:46 -0400 | [diff] [blame] | 784 | void nfs_inode_attach_open_context(struct nfs_open_context *ctx) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | { |
Trond Myklebust | c45ffdd | 2013-05-29 13:34:46 -0400 | [diff] [blame] | 786 | struct inode *inode = ctx->dentry->d_inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | struct nfs_inode *nfsi = NFS_I(inode); |
| 788 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | spin_lock(&inode->i_lock); |
| 790 | list_add(&ctx->list, &nfsi->open_files); |
| 791 | spin_unlock(&inode->i_lock); |
| 792 | } |
Trond Myklebust | c45ffdd | 2013-05-29 13:34:46 -0400 | [diff] [blame] | 793 | EXPORT_SYMBOL_GPL(nfs_inode_attach_open_context); |
| 794 | |
| 795 | void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx) |
| 796 | { |
| 797 | filp->private_data = get_nfs_open_context(ctx); |
| 798 | if (list_empty(&ctx->list)) |
| 799 | nfs_inode_attach_open_context(ctx); |
| 800 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 801 | EXPORT_SYMBOL_GPL(nfs_file_set_open_context); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | |
Trond Myklebust | d530838 | 2005-11-04 15:33:38 -0500 | [diff] [blame] | 803 | /* |
| 804 | * Given an inode, search for an open context with the desired characteristics |
| 805 | */ |
Trond Myklebust | dc0b027 | 2008-12-23 15:21:56 -0500 | [diff] [blame] | 806 | struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | { |
| 808 | struct nfs_inode *nfsi = NFS_I(inode); |
| 809 | struct nfs_open_context *pos, *ctx = NULL; |
| 810 | |
| 811 | spin_lock(&inode->i_lock); |
| 812 | list_for_each_entry(pos, &nfsi->open_files, list) { |
Trond Myklebust | d530838 | 2005-11-04 15:33:38 -0500 | [diff] [blame] | 813 | if (cred != NULL && pos->cred != cred) |
| 814 | continue; |
Trond Myklebust | 1544fa0 | 2010-03-25 13:54:49 -0400 | [diff] [blame] | 815 | if ((pos->mode & (FMODE_READ|FMODE_WRITE)) != mode) |
| 816 | continue; |
| 817 | ctx = get_nfs_open_context(pos); |
| 818 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | } |
| 820 | spin_unlock(&inode->i_lock); |
| 821 | return ctx; |
| 822 | } |
| 823 | |
Trond Myklebust | b92dccf | 2006-03-20 13:44:03 -0500 | [diff] [blame] | 824 | static void nfs_file_clear_open_context(struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | { |
Trond Myklebust | cd3758e | 2007-08-10 17:44:32 -0400 | [diff] [blame] | 826 | struct nfs_open_context *ctx = nfs_file_open_context(filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | |
| 828 | if (ctx) { |
Trond Myklebust | c45ffdd | 2013-05-29 13:34:46 -0400 | [diff] [blame] | 829 | struct inode *inode = ctx->dentry->d_inode; |
| 830 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | filp->private_data = NULL; |
| 832 | spin_lock(&inode->i_lock); |
| 833 | list_move_tail(&ctx->list, &NFS_I(inode)->open_files); |
| 834 | spin_unlock(&inode->i_lock); |
Chuck Lever | f895c53 | 2010-02-01 14:17:50 -0500 | [diff] [blame] | 835 | __put_nfs_open_context(ctx, filp->f_flags & O_DIRECT ? 0 : 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | } |
| 837 | } |
| 838 | |
| 839 | /* |
| 840 | * These allocate and release file read/write context information. |
| 841 | */ |
| 842 | int nfs_open(struct inode *inode, struct file *filp) |
| 843 | { |
| 844 | struct nfs_open_context *ctx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | |
Al Viro | 5ede7b1 | 2011-10-23 18:49:54 -0400 | [diff] [blame] | 846 | ctx = alloc_nfs_open_context(filp->f_path.dentry, filp->f_mode); |
| 847 | if (IS_ERR(ctx)) |
| 848 | return PTR_ERR(ctx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | nfs_file_set_open_context(filp, ctx); |
| 850 | put_nfs_open_context(ctx); |
David Howells | f1fe29b | 2013-09-27 11:20:03 +0100 | [diff] [blame] | 851 | nfs_fscache_open_file(inode, filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | return 0; |
| 853 | } |
| 854 | |
| 855 | int nfs_release(struct inode *inode, struct file *filp) |
| 856 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | nfs_file_clear_open_context(filp); |
| 858 | return 0; |
| 859 | } |
| 860 | |
| 861 | /* |
| 862 | * This function is called whenever some part of NFS notices that |
| 863 | * the cached attributes have to be refreshed. |
| 864 | */ |
| 865 | int |
| 866 | __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode) |
| 867 | { |
| 868 | int status = -ESTALE; |
David Quigley | 1775fd3 | 2013-05-22 12:50:42 -0400 | [diff] [blame] | 869 | struct nfs4_label *label = NULL; |
Trond Myklebust | a3cba2a | 2010-04-16 16:22:49 -0400 | [diff] [blame] | 870 | struct nfs_fattr *fattr = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | struct nfs_inode *nfsi = NFS_I(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 873 | dfprintk(PAGECACHE, "NFS: revalidating (%s/%Lu)\n", |
| 874 | inode->i_sb->s_id, (unsigned long long)NFS_FILEID(inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | |
Trond Myklebust | f4ce129 | 2013-08-19 18:59:33 -0400 | [diff] [blame] | 876 | trace_nfs_revalidate_inode_enter(inode); |
| 877 | |
Chuck Lever | 85233a7 | 2006-10-19 23:28:42 -0700 | [diff] [blame] | 878 | if (is_bad_inode(inode)) |
Chuck Lever | 412d582 | 2005-08-18 11:24:11 -0700 | [diff] [blame] | 879 | goto out; |
Trond Myklebust | 7fdc49c | 2007-09-28 19:11:33 -0400 | [diff] [blame] | 880 | if (NFS_STALE(inode)) |
| 881 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | |
Trond Myklebust | a3cba2a | 2010-04-16 16:22:49 -0400 | [diff] [blame] | 883 | status = -ENOMEM; |
| 884 | fattr = nfs_alloc_fattr(); |
| 885 | if (fattr == NULL) |
| 886 | goto out; |
| 887 | |
Trond Myklebust | 691beb1 | 2008-10-05 14:48:22 -0400 | [diff] [blame] | 888 | nfs_inc_stats(inode, NFSIOS_INODEREVALIDATE); |
David Quigley | 14c43f7 | 2013-05-22 12:50:43 -0400 | [diff] [blame] | 889 | |
| 890 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
| 891 | if (IS_ERR(label)) { |
| 892 | status = PTR_ERR(label); |
| 893 | goto out; |
| 894 | } |
| 895 | |
David Quigley | 1775fd3 | 2013-05-22 12:50:42 -0400 | [diff] [blame] | 896 | status = NFS_PROTO(inode)->getattr(server, NFS_FH(inode), fattr, label); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | if (status != 0) { |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 898 | dfprintk(PAGECACHE, "nfs_revalidate_inode: (%s/%Lu) getattr failed, error=%d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | inode->i_sb->s_id, |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 900 | (unsigned long long)NFS_FILEID(inode), status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | if (status == -ESTALE) { |
| 902 | nfs_zap_caches(inode); |
| 903 | if (!S_ISDIR(inode->i_mode)) |
Benny Halevy | 3a10c30 | 2008-01-23 08:58:59 +0200 | [diff] [blame] | 904 | set_bit(NFS_INO_STALE, &NFS_I(inode)->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | } |
David Quigley | 14c43f7 | 2013-05-22 12:50:43 -0400 | [diff] [blame] | 906 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | } |
| 908 | |
Trond Myklebust | a3cba2a | 2010-04-16 16:22:49 -0400 | [diff] [blame] | 909 | status = nfs_refresh_inode(inode, fattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | if (status) { |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 911 | dfprintk(PAGECACHE, "nfs_revalidate_inode: (%s/%Lu) refresh failed, error=%d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | inode->i_sb->s_id, |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 913 | (unsigned long long)NFS_FILEID(inode), status); |
David Quigley | 14c43f7 | 2013-05-22 12:50:43 -0400 | [diff] [blame] | 914 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | } |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 916 | |
Trond Myklebust | 24aa1fe | 2005-12-03 15:20:07 -0500 | [diff] [blame] | 917 | if (nfsi->cache_validity & NFS_INO_INVALID_ACL) |
Trond Myklebust | ada70d9 | 2005-06-22 17:16:22 +0000 | [diff] [blame] | 918 | nfs_zap_acl_cache(inode); |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 919 | |
Jeff Layton | 3da580a | 2013-11-02 06:57:18 -0400 | [diff] [blame] | 920 | nfs_setsecurity(inode, fattr, label); |
| 921 | |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 922 | dfprintk(PAGECACHE, "NFS: (%s/%Lu) revalidation complete\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | inode->i_sb->s_id, |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 924 | (unsigned long long)NFS_FILEID(inode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | |
David Quigley | 14c43f7 | 2013-05-22 12:50:43 -0400 | [diff] [blame] | 926 | err_out: |
| 927 | nfs4_label_free(label); |
| 928 | out: |
Trond Myklebust | a3cba2a | 2010-04-16 16:22:49 -0400 | [diff] [blame] | 929 | nfs_free_fattr(fattr); |
Trond Myklebust | f4ce129 | 2013-08-19 18:59:33 -0400 | [diff] [blame] | 930 | trace_nfs_revalidate_inode_exit(inode, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | return status; |
| 932 | } |
| 933 | |
| 934 | int nfs_attribute_timeout(struct inode *inode) |
| 935 | { |
| 936 | struct nfs_inode *nfsi = NFS_I(inode); |
| 937 | |
Trond Myklebust | d7cf8dd | 2010-04-16 16:42:46 -0400 | [diff] [blame] | 938 | return !time_in_range_open(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo); |
| 939 | } |
| 940 | |
Scott Mayhew | 43f291c | 2013-07-05 17:49:30 -0400 | [diff] [blame] | 941 | int nfs_attribute_cache_expired(struct inode *inode) |
Trond Myklebust | d7cf8dd | 2010-04-16 16:42:46 -0400 | [diff] [blame] | 942 | { |
Trond Myklebust | b4d2314 | 2010-03-10 15:21:44 -0500 | [diff] [blame] | 943 | if (nfs_have_delegated_attributes(inode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | return 0; |
Trond Myklebust | d7cf8dd | 2010-04-16 16:42:46 -0400 | [diff] [blame] | 945 | return nfs_attribute_timeout(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | } |
| 947 | |
| 948 | /** |
| 949 | * nfs_revalidate_inode - Revalidate the inode attributes |
| 950 | * @server - pointer to nfs_server struct |
| 951 | * @inode - pointer to inode struct |
| 952 | * |
| 953 | * Updates inode attribute information by retrieving the data from the server. |
| 954 | */ |
| 955 | int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode) |
| 956 | { |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 957 | if (!(NFS_I(inode)->cache_validity & |
| 958 | (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL)) |
Trond Myklebust | d7cf8dd | 2010-04-16 16:42:46 -0400 | [diff] [blame] | 959 | && !nfs_attribute_cache_expired(inode)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | return NFS_STALE(inode) ? -ESTALE : 0; |
| 961 | return __nfs_revalidate_inode(server, inode); |
| 962 | } |
Bryan Schumaker | 1c606fb | 2012-07-30 16:05:24 -0400 | [diff] [blame] | 963 | EXPORT_SYMBOL_GPL(nfs_revalidate_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | |
Trond Myklebust | 1cda707 | 2010-02-19 17:03:30 -0800 | [diff] [blame] | 965 | static int nfs_invalidate_mapping(struct inode *inode, struct address_space *mapping) |
Trond Myklebust | 717d44e | 2007-01-24 11:54:55 -0800 | [diff] [blame] | 966 | { |
| 967 | struct nfs_inode *nfsi = NFS_I(inode); |
Trond Myklebust | f8806c8 | 2013-08-05 13:26:31 -0400 | [diff] [blame] | 968 | int ret; |
| 969 | |
Trond Myklebust | 717d44e | 2007-01-24 11:54:55 -0800 | [diff] [blame] | 970 | if (mapping->nrpages != 0) { |
Trond Myklebust | f8806c8 | 2013-08-05 13:26:31 -0400 | [diff] [blame] | 971 | if (S_ISREG(inode->i_mode)) { |
| 972 | ret = nfs_sync_mapping(mapping); |
| 973 | if (ret < 0) |
| 974 | return ret; |
| 975 | } |
| 976 | ret = invalidate_inode_pages2(mapping); |
Trond Myklebust | 717d44e | 2007-01-24 11:54:55 -0800 | [diff] [blame] | 977 | if (ret < 0) |
| 978 | return ret; |
| 979 | } |
Jeff Layton | d529ef8 | 2014-01-27 13:46:15 -0500 | [diff] [blame] | 980 | if (S_ISDIR(inode->i_mode)) { |
| 981 | spin_lock(&inode->i_lock); |
Trond Myklebust | 717d44e | 2007-01-24 11:54:55 -0800 | [diff] [blame] | 982 | memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf)); |
Jeff Layton | d529ef8 | 2014-01-27 13:46:15 -0500 | [diff] [blame] | 983 | spin_unlock(&inode->i_lock); |
| 984 | } |
Trond Myklebust | 717d44e | 2007-01-24 11:54:55 -0800 | [diff] [blame] | 985 | nfs_inc_stats(inode, NFSIOS_DATAINVALIDATE); |
David Howells | de242c0 | 2012-12-20 21:52:38 +0000 | [diff] [blame] | 986 | nfs_fscache_wait_on_invalidate(inode); |
Trond Myklebust | f4ce129 | 2013-08-19 18:59:33 -0400 | [diff] [blame] | 987 | |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 988 | dfprintk(PAGECACHE, "NFS: (%s/%Lu) data cache invalidated\n", |
| 989 | inode->i_sb->s_id, |
| 990 | (unsigned long long)NFS_FILEID(inode)); |
Trond Myklebust | 717d44e | 2007-01-24 11:54:55 -0800 | [diff] [blame] | 991 | return 0; |
| 992 | } |
| 993 | |
Trond Myklebust | b4b1ead | 2012-04-29 11:23:50 -0400 | [diff] [blame] | 994 | static bool nfs_mapping_need_revalidate_inode(struct inode *inode) |
| 995 | { |
| 996 | if (nfs_have_delegated_attributes(inode)) |
| 997 | return false; |
| 998 | return (NFS_I(inode)->cache_validity & NFS_INO_REVAL_PAGECACHE) |
| 999 | || nfs_attribute_timeout(inode) |
| 1000 | || NFS_STALE(inode); |
| 1001 | } |
| 1002 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | /** |
Trond Myklebust | 7d52e86 | 2005-06-22 17:16:30 +0000 | [diff] [blame] | 1004 | * nfs_revalidate_mapping - Revalidate the pagecache |
| 1005 | * @inode - pointer to host inode |
| 1006 | * @mapping - pointer to mapping |
| 1007 | */ |
Trond Myklebust | 44b1187 | 2006-05-25 01:40:59 -0400 | [diff] [blame] | 1008 | int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping) |
Trond Myklebust | 7d52e86 | 2005-06-22 17:16:30 +0000 | [diff] [blame] | 1009 | { |
| 1010 | struct nfs_inode *nfsi = NFS_I(inode); |
Jeff Layton | d529ef8 | 2014-01-27 13:46:15 -0500 | [diff] [blame] | 1011 | unsigned long *bitlock = &nfsi->flags; |
Trond Myklebust | 44b1187 | 2006-05-25 01:40:59 -0400 | [diff] [blame] | 1012 | int ret = 0; |
| 1013 | |
Mel Gorman | 29418aa | 2012-07-31 16:45:10 -0700 | [diff] [blame] | 1014 | /* swapfiles are not supposed to be shared. */ |
| 1015 | if (IS_SWAPFILE(inode)) |
| 1016 | goto out; |
| 1017 | |
Trond Myklebust | b4b1ead | 2012-04-29 11:23:50 -0400 | [diff] [blame] | 1018 | if (nfs_mapping_need_revalidate_inode(inode)) { |
Trond Myklebust | 44b1187 | 2006-05-25 01:40:59 -0400 | [diff] [blame] | 1019 | ret = __nfs_revalidate_inode(NFS_SERVER(inode), inode); |
Trond Myklebust | 717d44e | 2007-01-24 11:54:55 -0800 | [diff] [blame] | 1020 | if (ret < 0) |
| 1021 | goto out; |
Trond Myklebust | 7d52e86 | 2005-06-22 17:16:30 +0000 | [diff] [blame] | 1022 | } |
Jeff Layton | d529ef8 | 2014-01-27 13:46:15 -0500 | [diff] [blame] | 1023 | |
| 1024 | /* |
| 1025 | * We must clear NFS_INO_INVALID_DATA first to ensure that |
| 1026 | * invalidations that come in while we're shooting down the mappings |
| 1027 | * are respected. But, that leaves a race window where one revalidator |
| 1028 | * can clear the flag, and then another checks it before the mapping |
| 1029 | * gets invalidated. Fix that by serializing access to this part of |
| 1030 | * the function. |
| 1031 | * |
| 1032 | * At the same time, we need to allow other tasks to see whether we |
| 1033 | * might be in the middle of invalidating the pages, so we only set |
| 1034 | * the bit lock here if it looks like we're going to be doing that. |
| 1035 | */ |
| 1036 | for (;;) { |
| 1037 | ret = wait_on_bit(bitlock, NFS_INO_INVALIDATING, |
| 1038 | nfs_wait_bit_killable, TASK_KILLABLE); |
| 1039 | if (ret) |
| 1040 | goto out; |
Trond Myklebust | 17dfeb9 | 2014-01-28 09:37:16 -0500 | [diff] [blame] | 1041 | spin_lock(&inode->i_lock); |
| 1042 | if (test_bit(NFS_INO_INVALIDATING, bitlock)) { |
| 1043 | spin_unlock(&inode->i_lock); |
| 1044 | continue; |
| 1045 | } |
| 1046 | if (nfsi->cache_validity & NFS_INO_INVALID_DATA) |
Jeff Layton | d529ef8 | 2014-01-27 13:46:15 -0500 | [diff] [blame] | 1047 | break; |
Trond Myklebust | 17dfeb9 | 2014-01-28 09:37:16 -0500 | [diff] [blame] | 1048 | spin_unlock(&inode->i_lock); |
| 1049 | goto out; |
Trond Myklebust | f4ce129 | 2013-08-19 18:59:33 -0400 | [diff] [blame] | 1050 | } |
| 1051 | |
Trond Myklebust | 17dfeb9 | 2014-01-28 09:37:16 -0500 | [diff] [blame] | 1052 | set_bit(NFS_INO_INVALIDATING, bitlock); |
Jeff Layton | 4db72b4 | 2014-01-28 13:47:46 -0500 | [diff] [blame] | 1053 | smp_wmb(); |
Trond Myklebust | 17dfeb9 | 2014-01-28 09:37:16 -0500 | [diff] [blame] | 1054 | nfsi->cache_validity &= ~NFS_INO_INVALID_DATA; |
| 1055 | spin_unlock(&inode->i_lock); |
| 1056 | trace_nfs_invalidate_mapping_enter(inode); |
| 1057 | ret = nfs_invalidate_mapping(inode, mapping); |
| 1058 | trace_nfs_invalidate_mapping_exit(inode, ret); |
Trond Myklebust | 717d44e | 2007-01-24 11:54:55 -0800 | [diff] [blame] | 1059 | |
Jeff Layton | d529ef8 | 2014-01-27 13:46:15 -0500 | [diff] [blame] | 1060 | clear_bit_unlock(NFS_INO_INVALIDATING, bitlock); |
| 1061 | smp_mb__after_clear_bit(); |
| 1062 | wake_up_bit(bitlock, NFS_INO_INVALIDATING); |
Trond Myklebust | cd9ae2b | 2006-10-19 23:28:40 -0700 | [diff] [blame] | 1063 | out: |
Trond Myklebust | 44b1187 | 2006-05-25 01:40:59 -0400 | [diff] [blame] | 1064 | return ret; |
Trond Myklebust | 7d52e86 | 2005-06-22 17:16:30 +0000 | [diff] [blame] | 1065 | } |
| 1066 | |
Trond Myklebust | 27dc1cd | 2011-01-25 15:28:21 -0500 | [diff] [blame] | 1067 | static unsigned long nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr) |
Trond Myklebust | a895b4a | 2006-01-03 09:55:40 +0100 | [diff] [blame] | 1068 | { |
| 1069 | struct nfs_inode *nfsi = NFS_I(inode); |
Trond Myklebust | 27dc1cd | 2011-01-25 15:28:21 -0500 | [diff] [blame] | 1070 | unsigned long ret = 0; |
Trond Myklebust | a895b4a | 2006-01-03 09:55:40 +0100 | [diff] [blame] | 1071 | |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1072 | if ((fattr->valid & NFS_ATTR_FATTR_PRECHANGE) |
| 1073 | && (fattr->valid & NFS_ATTR_FATTR_CHANGE) |
Trond Myklebust | a9a4a87 | 2011-10-17 16:08:46 -0700 | [diff] [blame] | 1074 | && inode->i_version == fattr->pre_change_attr) { |
| 1075 | inode->i_version = fattr->change_attr; |
Trond Myklebust | 70ca885 | 2007-09-30 15:21:24 -0400 | [diff] [blame] | 1076 | if (S_ISDIR(inode->i_mode)) |
| 1077 | nfsi->cache_validity |= NFS_INO_INVALID_DATA; |
Trond Myklebust | 27dc1cd | 2011-01-25 15:28:21 -0500 | [diff] [blame] | 1078 | ret |= NFS_INO_INVALID_ATTR; |
Trond Myklebust | 70ca885 | 2007-09-30 15:21:24 -0400 | [diff] [blame] | 1079 | } |
Trond Myklebust | a895b4a | 2006-01-03 09:55:40 +0100 | [diff] [blame] | 1080 | /* If we have atomic WCC data, we may update some attributes */ |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1081 | if ((fattr->valid & NFS_ATTR_FATTR_PRECTIME) |
| 1082 | && (fattr->valid & NFS_ATTR_FATTR_CTIME) |
Trond Myklebust | 27dc1cd | 2011-01-25 15:28:21 -0500 | [diff] [blame] | 1083 | && timespec_equal(&inode->i_ctime, &fattr->pre_ctime)) { |
| 1084 | memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime)); |
| 1085 | ret |= NFS_INO_INVALID_ATTR; |
| 1086 | } |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1087 | |
| 1088 | if ((fattr->valid & NFS_ATTR_FATTR_PREMTIME) |
| 1089 | && (fattr->valid & NFS_ATTR_FATTR_MTIME) |
| 1090 | && timespec_equal(&inode->i_mtime, &fattr->pre_mtime)) { |
Trond Myklebust | 27dc1cd | 2011-01-25 15:28:21 -0500 | [diff] [blame] | 1091 | memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime)); |
| 1092 | if (S_ISDIR(inode->i_mode)) |
| 1093 | nfsi->cache_validity |= NFS_INO_INVALID_DATA; |
| 1094 | ret |= NFS_INO_INVALID_ATTR; |
Trond Myklebust | a895b4a | 2006-01-03 09:55:40 +0100 | [diff] [blame] | 1095 | } |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1096 | if ((fattr->valid & NFS_ATTR_FATTR_PRESIZE) |
| 1097 | && (fattr->valid & NFS_ATTR_FATTR_SIZE) |
| 1098 | && i_size_read(inode) == nfs_size_to_loff_t(fattr->pre_size) |
Trond Myklebust | 27dc1cd | 2011-01-25 15:28:21 -0500 | [diff] [blame] | 1099 | && nfsi->npages == 0) { |
| 1100 | i_size_write(inode, nfs_size_to_loff_t(fattr->size)); |
| 1101 | ret |= NFS_INO_INVALID_ATTR; |
| 1102 | } |
David Howells | de242c0 | 2012-12-20 21:52:38 +0000 | [diff] [blame] | 1103 | |
| 1104 | if (nfsi->cache_validity & NFS_INO_INVALID_DATA) |
| 1105 | nfs_fscache_invalidate(inode); |
| 1106 | |
Trond Myklebust | 27dc1cd | 2011-01-25 15:28:21 -0500 | [diff] [blame] | 1107 | return ret; |
Trond Myklebust | a895b4a | 2006-01-03 09:55:40 +0100 | [diff] [blame] | 1108 | } |
| 1109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | /** |
Trond Myklebust | 3380114 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1111 | * nfs_check_inode_attributes - verify consistency of the inode attribute cache |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | * @inode - pointer to inode |
| 1113 | * @fattr - updated attributes |
| 1114 | * |
| 1115 | * Verifies the attribute cache. If we have just changed the attributes, |
| 1116 | * so that fattr carries weak cache consistency data, then it may |
| 1117 | * also update the ctime/mtime/change_attribute. |
| 1118 | */ |
Trond Myklebust | 3380114 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1119 | static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | { |
| 1121 | struct nfs_inode *nfsi = NFS_I(inode); |
| 1122 | loff_t cur_size, new_isize; |
Trond Myklebust | 2a3f5fd | 2007-10-08 14:26:13 -0400 | [diff] [blame] | 1123 | unsigned long invalid = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | |
Chuck Lever | dc59250 | 2005-08-18 11:24:12 -0700 | [diff] [blame] | 1125 | |
Trond Myklebust | 01da47b | 2012-04-29 12:30:19 -0400 | [diff] [blame] | 1126 | if (nfs_have_delegated_attributes(inode)) |
| 1127 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | /* Has the inode gone and changed behind our back? */ |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1129 | if ((fattr->valid & NFS_ATTR_FATTR_FILEID) && nfsi->fileid != fattr->fileid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | return -EIO; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1131 | if ((fattr->valid & NFS_ATTR_FATTR_TYPE) && (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT)) |
| 1132 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1134 | if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 && |
Trond Myklebust | a9a4a87 | 2011-10-17 16:08:46 -0700 | [diff] [blame] | 1135 | inode->i_version != fattr->change_attr) |
Trond Myklebust | 2a3f5fd | 2007-10-08 14:26:13 -0400 | [diff] [blame] | 1136 | invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | /* Verify a few of the more important attributes */ |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1139 | if ((fattr->valid & NFS_ATTR_FATTR_MTIME) && !timespec_equal(&inode->i_mtime, &fattr->mtime)) |
Trond Myklebust | fee7fe1 | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 1140 | invalid |= NFS_INO_INVALID_ATTR; |
Trond Myklebust | ca62b9c | 2006-03-20 13:44:07 -0500 | [diff] [blame] | 1141 | |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1142 | if (fattr->valid & NFS_ATTR_FATTR_SIZE) { |
| 1143 | cur_size = i_size_read(inode); |
| 1144 | new_isize = nfs_size_to_loff_t(fattr->size); |
| 1145 | if (cur_size != new_isize && nfsi->npages == 0) |
| 1146 | invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE; |
| 1147 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | |
| 1149 | /* Have any file permissions changed? */ |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1150 | if ((fattr->valid & NFS_ATTR_FATTR_MODE) && (inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)) |
| 1151 | invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL; |
Eric W. Biederman | 9ff593c | 2013-02-01 14:26:23 -0800 | [diff] [blame] | 1152 | if ((fattr->valid & NFS_ATTR_FATTR_OWNER) && !uid_eq(inode->i_uid, fattr->uid)) |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1153 | invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL; |
Eric W. Biederman | 9ff593c | 2013-02-01 14:26:23 -0800 | [diff] [blame] | 1154 | if ((fattr->valid & NFS_ATTR_FATTR_GROUP) && !gid_eq(inode->i_gid, fattr->gid)) |
Trond Myklebust | 2a3f5fd | 2007-10-08 14:26:13 -0400 | [diff] [blame] | 1155 | invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | |
| 1157 | /* Has the link count changed? */ |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1158 | if ((fattr->valid & NFS_ATTR_FATTR_NLINK) && inode->i_nlink != fattr->nlink) |
Trond Myklebust | 2a3f5fd | 2007-10-08 14:26:13 -0400 | [diff] [blame] | 1159 | invalid |= NFS_INO_INVALID_ATTR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1161 | if ((fattr->valid & NFS_ATTR_FATTR_ATIME) && !timespec_equal(&inode->i_atime, &fattr->atime)) |
Trond Myklebust | 2a3f5fd | 2007-10-08 14:26:13 -0400 | [diff] [blame] | 1162 | invalid |= NFS_INO_INVALID_ATIME; |
| 1163 | |
| 1164 | if (invalid != 0) |
| 1165 | nfsi->cache_validity |= invalid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | |
Trond Myklebust | 3380114 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1167 | nfsi->read_cache_jiffies = fattr->time_start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | return 0; |
| 1169 | } |
| 1170 | |
Trond Myklebust | a10ad17 | 2008-09-23 17:28:41 -0400 | [diff] [blame] | 1171 | static int nfs_ctime_need_update(const struct inode *inode, const struct nfs_fattr *fattr) |
| 1172 | { |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1173 | if (!(fattr->valid & NFS_ATTR_FATTR_CTIME)) |
| 1174 | return 0; |
Trond Myklebust | a10ad17 | 2008-09-23 17:28:41 -0400 | [diff] [blame] | 1175 | return timespec_compare(&fattr->ctime, &inode->i_ctime) > 0; |
| 1176 | } |
| 1177 | |
| 1178 | static int nfs_size_need_update(const struct inode *inode, const struct nfs_fattr *fattr) |
| 1179 | { |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1180 | if (!(fattr->valid & NFS_ATTR_FATTR_SIZE)) |
| 1181 | return 0; |
Trond Myklebust | a10ad17 | 2008-09-23 17:28:41 -0400 | [diff] [blame] | 1182 | return nfs_size_to_loff_t(fattr->size) > i_size_read(inode); |
| 1183 | } |
| 1184 | |
Trond Myklebust | ae05f26 | 2008-10-28 15:21:40 -0400 | [diff] [blame] | 1185 | static atomic_long_t nfs_attr_generation_counter; |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 1186 | |
| 1187 | static unsigned long nfs_read_attr_generation_counter(void) |
| 1188 | { |
Trond Myklebust | ae05f26 | 2008-10-28 15:21:40 -0400 | [diff] [blame] | 1189 | return atomic_long_read(&nfs_attr_generation_counter); |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 1190 | } |
| 1191 | |
| 1192 | unsigned long nfs_inc_attr_generation_counter(void) |
| 1193 | { |
Trond Myklebust | ae05f26 | 2008-10-28 15:21:40 -0400 | [diff] [blame] | 1194 | return atomic_long_inc_return(&nfs_attr_generation_counter); |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 1195 | } |
| 1196 | |
| 1197 | void nfs_fattr_init(struct nfs_fattr *fattr) |
| 1198 | { |
| 1199 | fattr->valid = 0; |
| 1200 | fattr->time_start = jiffies; |
| 1201 | fattr->gencount = nfs_inc_attr_generation_counter(); |
Trond Myklebust | 6926afd | 2012-01-07 13:22:46 -0500 | [diff] [blame] | 1202 | fattr->owner_name = NULL; |
| 1203 | fattr->group_name = NULL; |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 1204 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 1205 | EXPORT_SYMBOL_GPL(nfs_fattr_init); |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 1206 | |
Trond Myklebust | 2d36bfde | 2010-04-16 16:22:45 -0400 | [diff] [blame] | 1207 | struct nfs_fattr *nfs_alloc_fattr(void) |
| 1208 | { |
| 1209 | struct nfs_fattr *fattr; |
| 1210 | |
| 1211 | fattr = kmalloc(sizeof(*fattr), GFP_NOFS); |
| 1212 | if (fattr != NULL) |
| 1213 | nfs_fattr_init(fattr); |
| 1214 | return fattr; |
| 1215 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 1216 | EXPORT_SYMBOL_GPL(nfs_alloc_fattr); |
Trond Myklebust | 2d36bfde | 2010-04-16 16:22:45 -0400 | [diff] [blame] | 1217 | |
| 1218 | struct nfs_fh *nfs_alloc_fhandle(void) |
| 1219 | { |
| 1220 | struct nfs_fh *fh; |
| 1221 | |
| 1222 | fh = kmalloc(sizeof(struct nfs_fh), GFP_NOFS); |
| 1223 | if (fh != NULL) |
| 1224 | fh->size = 0; |
| 1225 | return fh; |
| 1226 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 1227 | EXPORT_SYMBOL_GPL(nfs_alloc_fhandle); |
Trond Myklebust | 2d36bfde | 2010-04-16 16:22:45 -0400 | [diff] [blame] | 1228 | |
Trond Myklebust | e27d359 | 2012-03-18 14:07:42 -0400 | [diff] [blame] | 1229 | #ifdef NFS_DEBUG |
Weston Andros Adamson | d8e0539 | 2012-03-06 20:46:43 -0500 | [diff] [blame] | 1230 | /* |
| 1231 | * _nfs_display_fhandle_hash - calculate the crc32 hash for the filehandle |
| 1232 | * in the same way that wireshark does |
| 1233 | * |
| 1234 | * @fh: file handle |
| 1235 | * |
| 1236 | * For debugging only. |
| 1237 | */ |
| 1238 | u32 _nfs_display_fhandle_hash(const struct nfs_fh *fh) |
| 1239 | { |
| 1240 | /* wireshark uses 32-bit AUTODIN crc and does a bitwise |
| 1241 | * not on the result */ |
Trond Myklebust | 1264a2f | 2013-08-12 16:06:31 -0400 | [diff] [blame] | 1242 | return nfs_fhandle_hash(fh); |
Weston Andros Adamson | d8e0539 | 2012-03-06 20:46:43 -0500 | [diff] [blame] | 1243 | } |
Chuck Lever | 9e6ee76 | 2013-10-17 14:12:45 -0400 | [diff] [blame] | 1244 | EXPORT_SYMBOL_GPL(_nfs_display_fhandle_hash); |
Weston Andros Adamson | d8e0539 | 2012-03-06 20:46:43 -0500 | [diff] [blame] | 1245 | |
| 1246 | /* |
Chuck Lever | 20d27e9 | 2012-03-01 17:01:31 -0500 | [diff] [blame] | 1247 | * _nfs_display_fhandle - display an NFS file handle on the console |
| 1248 | * |
| 1249 | * @fh: file handle to display |
| 1250 | * @caption: display caption |
| 1251 | * |
| 1252 | * For debugging only. |
| 1253 | */ |
Chuck Lever | 20d27e9 | 2012-03-01 17:01:31 -0500 | [diff] [blame] | 1254 | void _nfs_display_fhandle(const struct nfs_fh *fh, const char *caption) |
| 1255 | { |
| 1256 | unsigned short i; |
| 1257 | |
Trond Myklebust | fa68a1b | 2012-03-06 10:14:35 -0500 | [diff] [blame] | 1258 | if (fh == NULL || fh->size == 0) { |
Chuck Lever | 20d27e9 | 2012-03-01 17:01:31 -0500 | [diff] [blame] | 1259 | printk(KERN_DEFAULT "%s at %p is empty\n", caption, fh); |
| 1260 | return; |
| 1261 | } |
| 1262 | |
Weston Andros Adamson | d8e0539 | 2012-03-06 20:46:43 -0500 | [diff] [blame] | 1263 | printk(KERN_DEFAULT "%s at %p is %u bytes, crc: 0x%08x:\n", |
| 1264 | caption, fh, fh->size, _nfs_display_fhandle_hash(fh)); |
Chuck Lever | 20d27e9 | 2012-03-01 17:01:31 -0500 | [diff] [blame] | 1265 | for (i = 0; i < fh->size; i += 16) { |
| 1266 | __be32 *pos = (__be32 *)&fh->data[i]; |
| 1267 | |
| 1268 | switch ((fh->size - i - 1) >> 2) { |
| 1269 | case 0: |
| 1270 | printk(KERN_DEFAULT " %08x\n", |
| 1271 | be32_to_cpup(pos)); |
| 1272 | break; |
| 1273 | case 1: |
| 1274 | printk(KERN_DEFAULT " %08x %08x\n", |
| 1275 | be32_to_cpup(pos), be32_to_cpup(pos + 1)); |
| 1276 | break; |
| 1277 | case 2: |
| 1278 | printk(KERN_DEFAULT " %08x %08x %08x\n", |
| 1279 | be32_to_cpup(pos), be32_to_cpup(pos + 1), |
| 1280 | be32_to_cpup(pos + 2)); |
| 1281 | break; |
| 1282 | default: |
| 1283 | printk(KERN_DEFAULT " %08x %08x %08x %08x\n", |
| 1284 | be32_to_cpup(pos), be32_to_cpup(pos + 1), |
| 1285 | be32_to_cpup(pos + 2), be32_to_cpup(pos + 3)); |
| 1286 | } |
| 1287 | } |
| 1288 | } |
Chuck Lever | 9e6ee76 | 2013-10-17 14:12:45 -0400 | [diff] [blame] | 1289 | EXPORT_SYMBOL_GPL(_nfs_display_fhandle); |
Chuck Lever | 20d27e9 | 2012-03-01 17:01:31 -0500 | [diff] [blame] | 1290 | #endif |
| 1291 | |
| 1292 | /** |
Trond Myklebust | a10ad17 | 2008-09-23 17:28:41 -0400 | [diff] [blame] | 1293 | * nfs_inode_attrs_need_update - check if the inode attributes need updating |
| 1294 | * @inode - pointer to inode |
| 1295 | * @fattr - attributes |
| 1296 | * |
| 1297 | * Attempt to divine whether or not an RPC call reply carrying stale |
| 1298 | * attributes got scheduled after another call carrying updated ones. |
| 1299 | * |
| 1300 | * To do so, the function first assumes that a more recent ctime means |
| 1301 | * that the attributes in fattr are newer, however it also attempt to |
| 1302 | * catch the case where ctime either didn't change, or went backwards |
| 1303 | * (if someone reset the clock on the server) by looking at whether |
| 1304 | * or not this RPC call was started after the inode was last updated. |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 1305 | * Note also the check for wraparound of 'attr_gencount' |
Trond Myklebust | a10ad17 | 2008-09-23 17:28:41 -0400 | [diff] [blame] | 1306 | * |
| 1307 | * The function returns 'true' if it thinks the attributes in 'fattr' are |
| 1308 | * more recent than the ones cached in the inode. |
| 1309 | * |
| 1310 | */ |
| 1311 | static int nfs_inode_attrs_need_update(const struct inode *inode, const struct nfs_fattr *fattr) |
| 1312 | { |
| 1313 | const struct nfs_inode *nfsi = NFS_I(inode); |
| 1314 | |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 1315 | return ((long)fattr->gencount - (long)nfsi->attr_gencount) > 0 || |
Trond Myklebust | 03254e6 | 2008-10-09 13:27:55 -0400 | [diff] [blame] | 1316 | nfs_ctime_need_update(inode, fattr) || |
| 1317 | nfs_size_need_update(inode, fattr) || |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 1318 | ((long)nfsi->attr_gencount - (long)nfs_read_attr_generation_counter() > 0); |
Trond Myklebust | a10ad17 | 2008-09-23 17:28:41 -0400 | [diff] [blame] | 1319 | } |
| 1320 | |
Trond Myklebust | d8c951c | 2014-01-13 12:08:11 -0500 | [diff] [blame] | 1321 | /* |
| 1322 | * Don't trust the change_attribute, mtime, ctime or size if |
| 1323 | * a pnfs LAYOUTCOMMIT is outstanding |
| 1324 | */ |
| 1325 | static void nfs_inode_attrs_handle_layoutcommit(struct inode *inode, |
| 1326 | struct nfs_fattr *fattr) |
| 1327 | { |
| 1328 | if (pnfs_layoutcommit_outstanding(inode)) |
| 1329 | fattr->valid &= ~(NFS_ATTR_FATTR_CHANGE | |
| 1330 | NFS_ATTR_FATTR_MTIME | |
| 1331 | NFS_ATTR_FATTR_CTIME | |
| 1332 | NFS_ATTR_FATTR_SIZE); |
| 1333 | } |
| 1334 | |
Trond Myklebust | 870a5be | 2008-10-05 12:07:23 -0400 | [diff] [blame] | 1335 | static int nfs_refresh_inode_locked(struct inode *inode, struct nfs_fattr *fattr) |
| 1336 | { |
Trond Myklebust | f4ce129 | 2013-08-19 18:59:33 -0400 | [diff] [blame] | 1337 | int ret; |
| 1338 | |
| 1339 | trace_nfs_refresh_inode_enter(inode); |
| 1340 | |
Trond Myklebust | d8c951c | 2014-01-13 12:08:11 -0500 | [diff] [blame] | 1341 | nfs_inode_attrs_handle_layoutcommit(inode, fattr); |
| 1342 | |
Trond Myklebust | a10ad17 | 2008-09-23 17:28:41 -0400 | [diff] [blame] | 1343 | if (nfs_inode_attrs_need_update(inode, fattr)) |
Trond Myklebust | f4ce129 | 2013-08-19 18:59:33 -0400 | [diff] [blame] | 1344 | ret = nfs_update_inode(inode, fattr); |
| 1345 | else |
| 1346 | ret = nfs_check_inode_attributes(inode, fattr); |
| 1347 | |
| 1348 | trace_nfs_refresh_inode_exit(inode, ret); |
| 1349 | return ret; |
Trond Myklebust | 870a5be | 2008-10-05 12:07:23 -0400 | [diff] [blame] | 1350 | } |
| 1351 | |
Trond Myklebust | 3380114 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1352 | /** |
| 1353 | * nfs_refresh_inode - try to update the inode attribute cache |
| 1354 | * @inode - pointer to inode |
| 1355 | * @fattr - updated attributes |
| 1356 | * |
| 1357 | * Check that an RPC call that returned attributes has not overlapped with |
| 1358 | * other recent updates of the inode metadata, then decide whether it is |
| 1359 | * safe to do a full update of the inode attributes, or whether just to |
| 1360 | * call nfs_check_inode_attributes. |
| 1361 | */ |
| 1362 | int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr) |
| 1363 | { |
Trond Myklebust | 3380114 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1364 | int status; |
| 1365 | |
| 1366 | if ((fattr->valid & NFS_ATTR_FATTR) == 0) |
| 1367 | return 0; |
| 1368 | spin_lock(&inode->i_lock); |
Trond Myklebust | 870a5be | 2008-10-05 12:07:23 -0400 | [diff] [blame] | 1369 | status = nfs_refresh_inode_locked(inode, fattr); |
Trond Myklebust | 3380114 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1370 | spin_unlock(&inode->i_lock); |
David Howells | ef79c09 | 2009-04-03 16:42:43 +0100 | [diff] [blame] | 1371 | |
Trond Myklebust | 3380114 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1372 | return status; |
| 1373 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 1374 | EXPORT_SYMBOL_GPL(nfs_refresh_inode); |
Trond Myklebust | 3380114 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1375 | |
Trond Myklebust | d65f557 | 2008-10-05 12:27:55 -0400 | [diff] [blame] | 1376 | static int nfs_post_op_update_inode_locked(struct inode *inode, struct nfs_fattr *fattr) |
| 1377 | { |
| 1378 | struct nfs_inode *nfsi = NFS_I(inode); |
| 1379 | |
| 1380 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE; |
David Howells | de242c0 | 2012-12-20 21:52:38 +0000 | [diff] [blame] | 1381 | if (S_ISDIR(inode->i_mode)) { |
Trond Myklebust | d65f557 | 2008-10-05 12:27:55 -0400 | [diff] [blame] | 1382 | nfsi->cache_validity |= NFS_INO_INVALID_DATA; |
David Howells | de242c0 | 2012-12-20 21:52:38 +0000 | [diff] [blame] | 1383 | nfs_fscache_invalidate(inode); |
| 1384 | } |
Trond Myklebust | d65f557 | 2008-10-05 12:27:55 -0400 | [diff] [blame] | 1385 | if ((fattr->valid & NFS_ATTR_FATTR) == 0) |
| 1386 | return 0; |
| 1387 | return nfs_refresh_inode_locked(inode, fattr); |
| 1388 | } |
| 1389 | |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1390 | /** |
| 1391 | * nfs_post_op_update_inode - try to update the inode attribute cache |
| 1392 | * @inode - pointer to inode |
| 1393 | * @fattr - updated attributes |
| 1394 | * |
| 1395 | * After an operation that has changed the inode metadata, mark the |
| 1396 | * attribute cache as being invalid, then try to update it. |
Chuck Lever | f551e44 | 2006-09-20 14:33:04 -0400 | [diff] [blame] | 1397 | * |
| 1398 | * NB: if the server didn't return any post op attributes, this |
| 1399 | * function will force the retrieval of attributes before the next |
| 1400 | * NFS request. Thus it should be used only for operations that |
| 1401 | * are expected to change one or more attributes, to avoid |
| 1402 | * unnecessary NFS requests and trips through nfs_update_inode(). |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1403 | */ |
| 1404 | int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr) |
| 1405 | { |
Trond Myklebust | d65f557 | 2008-10-05 12:27:55 -0400 | [diff] [blame] | 1406 | int status; |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1407 | |
Trond Myklebust | 7668fdb | 2007-10-01 09:59:15 -0400 | [diff] [blame] | 1408 | spin_lock(&inode->i_lock); |
Trond Myklebust | d65f557 | 2008-10-05 12:27:55 -0400 | [diff] [blame] | 1409 | status = nfs_post_op_update_inode_locked(inode, fattr); |
Trond Myklebust | 7668fdb | 2007-10-01 09:59:15 -0400 | [diff] [blame] | 1410 | spin_unlock(&inode->i_lock); |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 1411 | |
Trond Myklebust | 870a5be | 2008-10-05 12:07:23 -0400 | [diff] [blame] | 1412 | return status; |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1413 | } |
Bryan Schumaker | 1c606fb | 2012-07-30 16:05:24 -0400 | [diff] [blame] | 1414 | EXPORT_SYMBOL_GPL(nfs_post_op_update_inode); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1415 | |
Trond Myklebust | 70ca885 | 2007-09-30 15:21:24 -0400 | [diff] [blame] | 1416 | /** |
| 1417 | * nfs_post_op_update_inode_force_wcc - try to update the inode attribute cache |
| 1418 | * @inode - pointer to inode |
| 1419 | * @fattr - updated attributes |
| 1420 | * |
| 1421 | * After an operation that has changed the inode metadata, mark the |
| 1422 | * attribute cache as being invalid, then try to update it. Fake up |
| 1423 | * weak cache consistency data, if none exist. |
| 1424 | * |
| 1425 | * This function is mainly designed to be used by the ->write_done() functions. |
| 1426 | */ |
| 1427 | int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr) |
| 1428 | { |
Trond Myklebust | d65f557 | 2008-10-05 12:27:55 -0400 | [diff] [blame] | 1429 | int status; |
| 1430 | |
| 1431 | spin_lock(&inode->i_lock); |
| 1432 | /* Don't do a WCC update if these attributes are already stale */ |
| 1433 | if ((fattr->valid & NFS_ATTR_FATTR) == 0 || |
| 1434 | !nfs_inode_attrs_need_update(inode, fattr)) { |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1435 | fattr->valid &= ~(NFS_ATTR_FATTR_PRECHANGE |
| 1436 | | NFS_ATTR_FATTR_PRESIZE |
| 1437 | | NFS_ATTR_FATTR_PREMTIME |
| 1438 | | NFS_ATTR_FATTR_PRECTIME); |
Trond Myklebust | d65f557 | 2008-10-05 12:27:55 -0400 | [diff] [blame] | 1439 | goto out_noforce; |
| 1440 | } |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1441 | if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 && |
| 1442 | (fattr->valid & NFS_ATTR_FATTR_PRECHANGE) == 0) { |
Trond Myklebust | a9a4a87 | 2011-10-17 16:08:46 -0700 | [diff] [blame] | 1443 | fattr->pre_change_attr = inode->i_version; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1444 | fattr->valid |= NFS_ATTR_FATTR_PRECHANGE; |
Trond Myklebust | 70ca885 | 2007-09-30 15:21:24 -0400 | [diff] [blame] | 1445 | } |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1446 | if ((fattr->valid & NFS_ATTR_FATTR_CTIME) != 0 && |
| 1447 | (fattr->valid & NFS_ATTR_FATTR_PRECTIME) == 0) { |
Trond Myklebust | 70ca885 | 2007-09-30 15:21:24 -0400 | [diff] [blame] | 1448 | memcpy(&fattr->pre_ctime, &inode->i_ctime, sizeof(fattr->pre_ctime)); |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1449 | fattr->valid |= NFS_ATTR_FATTR_PRECTIME; |
| 1450 | } |
| 1451 | if ((fattr->valid & NFS_ATTR_FATTR_MTIME) != 0 && |
| 1452 | (fattr->valid & NFS_ATTR_FATTR_PREMTIME) == 0) { |
Trond Myklebust | 70ca885 | 2007-09-30 15:21:24 -0400 | [diff] [blame] | 1453 | memcpy(&fattr->pre_mtime, &inode->i_mtime, sizeof(fattr->pre_mtime)); |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1454 | fattr->valid |= NFS_ATTR_FATTR_PREMTIME; |
| 1455 | } |
| 1456 | if ((fattr->valid & NFS_ATTR_FATTR_SIZE) != 0 && |
| 1457 | (fattr->valid & NFS_ATTR_FATTR_PRESIZE) == 0) { |
Trond Myklebust | a3d0145 | 2008-06-11 12:21:19 -0400 | [diff] [blame] | 1458 | fattr->pre_size = i_size_read(inode); |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1459 | fattr->valid |= NFS_ATTR_FATTR_PRESIZE; |
Trond Myklebust | 70ca885 | 2007-09-30 15:21:24 -0400 | [diff] [blame] | 1460 | } |
Trond Myklebust | d65f557 | 2008-10-05 12:27:55 -0400 | [diff] [blame] | 1461 | out_noforce: |
| 1462 | status = nfs_post_op_update_inode_locked(inode, fattr); |
| 1463 | spin_unlock(&inode->i_lock); |
| 1464 | return status; |
Trond Myklebust | 70ca885 | 2007-09-30 15:21:24 -0400 | [diff] [blame] | 1465 | } |
Bryan Schumaker | ddda8e0 | 2012-07-30 16:05:23 -0400 | [diff] [blame] | 1466 | EXPORT_SYMBOL_GPL(nfs_post_op_update_inode_force_wcc); |
Trond Myklebust | 70ca885 | 2007-09-30 15:21:24 -0400 | [diff] [blame] | 1467 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | /* |
| 1469 | * Many nfs protocol calls return the new file attributes after |
| 1470 | * an operation. Here we update the inode to reflect the state |
| 1471 | * of the server's inode. |
| 1472 | * |
| 1473 | * This is a bit tricky because we have to make sure all dirty pages |
| 1474 | * have been sent off to the server before calling invalidate_inode_pages. |
| 1475 | * To make sure no other process adds more write requests while we try |
| 1476 | * our best to flush them, we make them sleep during the attribute refresh. |
| 1477 | * |
| 1478 | * A very similar scenario holds for the dir cache. |
| 1479 | */ |
Trond Myklebust | 24aa1fe | 2005-12-03 15:20:07 -0500 | [diff] [blame] | 1480 | static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1481 | { |
Trond Myklebust | 8b4bdcf | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 1482 | struct nfs_server *server; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | struct nfs_inode *nfsi = NFS_I(inode); |
Trond Myklebust | 951a143 | 2005-06-22 17:16:30 +0000 | [diff] [blame] | 1484 | loff_t cur_isize, new_isize; |
Trond Myklebust | 2a3f5fd | 2007-10-08 14:26:13 -0400 | [diff] [blame] | 1485 | unsigned long invalid = 0; |
Trond Myklebust | 3e7d950 | 2007-02-05 14:26:28 -0800 | [diff] [blame] | 1486 | unsigned long now = jiffies; |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1487 | unsigned long save_cache_validity; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 1489 | dfprintk(VFS, "NFS: %s(%s/%lu fh_crc=0x%08x ct=%d info=0x%x)\n", |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 1490 | __func__, inode->i_sb->s_id, inode->i_ino, |
Weston Andros Adamson | 4f1abd2 | 2012-03-06 21:58:20 -0500 | [diff] [blame] | 1491 | nfs_display_fhandle_hash(NFS_FH(inode)), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | atomic_read(&inode->i_count), fattr->valid); |
| 1493 | |
Matthew Treinish | e73e6c9 | 2012-04-30 11:32:57 -0400 | [diff] [blame] | 1494 | if ((fattr->valid & NFS_ATTR_FATTR_FILEID) && nfsi->fileid != fattr->fileid) { |
| 1495 | printk(KERN_ERR "NFS: server %s error: fileid changed\n" |
| 1496 | "fsid %s: expected fileid 0x%Lx, got 0x%Lx\n", |
| 1497 | NFS_SERVER(inode)->nfs_client->cl_hostname, |
| 1498 | inode->i_sb->s_id, (long long)nfsi->fileid, |
| 1499 | (long long)fattr->fileid); |
| 1500 | goto out_err; |
| 1501 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | |
| 1503 | /* |
| 1504 | * Make sure the inode's type hasn't changed. |
| 1505 | */ |
Matthew Treinish | e73e6c9 | 2012-04-30 11:32:57 -0400 | [diff] [blame] | 1506 | if ((fattr->valid & NFS_ATTR_FATTR_TYPE) && (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT)) { |
| 1507 | /* |
| 1508 | * Big trouble! The inode has become a different object. |
| 1509 | */ |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 1510 | printk(KERN_DEBUG "NFS: %s: inode %lu mode changed, %07o to %07o\n", |
Matthew Treinish | e73e6c9 | 2012-04-30 11:32:57 -0400 | [diff] [blame] | 1511 | __func__, inode->i_ino, inode->i_mode, fattr->mode); |
| 1512 | goto out_err; |
| 1513 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | |
Trond Myklebust | 8b4bdcf | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 1515 | server = NFS_SERVER(inode); |
Trond Myklebust | a035686 | 2007-06-05 13:26:15 -0400 | [diff] [blame] | 1516 | /* Update the fsid? */ |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1517 | if (S_ISDIR(inode->i_mode) && (fattr->valid & NFS_ATTR_FATTR_FSID) && |
Trond Myklebust | c37dcd33 | 2008-03-06 12:34:50 -0500 | [diff] [blame] | 1518 | !nfs_fsid_equal(&server->fsid, &fattr->fsid) && |
David Howells | 36d43a4 | 2011-01-14 18:45:42 +0000 | [diff] [blame] | 1519 | !IS_AUTOMOUNT(inode)) |
Trond Myklebust | 8b4bdcf | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 1520 | server->fsid = fattr->fsid; |
| 1521 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | /* |
| 1523 | * Update the read time so we don't revalidate too often. |
| 1524 | */ |
Trond Myklebust | 3380114 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 1525 | nfsi->read_cache_jiffies = fattr->time_start; |
Trond Myklebust | 3e7d950 | 2007-02-05 14:26:28 -0800 | [diff] [blame] | 1526 | |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1527 | save_cache_validity = nfsi->cache_validity; |
| 1528 | nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR |
| 1529 | | NFS_INO_INVALID_ATIME |
| 1530 | | NFS_INO_REVAL_FORCED |
| 1531 | | NFS_INO_REVAL_PAGECACHE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | |
Trond Myklebust | a895b4a | 2006-01-03 09:55:40 +0100 | [diff] [blame] | 1533 | /* Do atomic weak cache consistency updates */ |
Trond Myklebust | 27dc1cd | 2011-01-25 15:28:21 -0500 | [diff] [blame] | 1534 | invalid |= nfs_wcc_update_inode(inode, fattr); |
Trond Myklebust | a895b4a | 2006-01-03 09:55:40 +0100 | [diff] [blame] | 1535 | |
Trond Myklebust | 47aabaa | 2007-09-27 15:57:24 -0400 | [diff] [blame] | 1536 | /* More cache consistency checks */ |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1537 | if (fattr->valid & NFS_ATTR_FATTR_CHANGE) { |
Trond Myklebust | a9a4a87 | 2011-10-17 16:08:46 -0700 | [diff] [blame] | 1538 | if (inode->i_version != fattr->change_attr) { |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1539 | dprintk("NFS: change_attr change on server for file %s/%ld\n", |
| 1540 | inode->i_sb->s_id, inode->i_ino); |
Trond Myklebust | 6a4506c | 2012-04-27 13:48:17 -0400 | [diff] [blame] | 1541 | invalid |= NFS_INO_INVALID_ATTR |
| 1542 | | NFS_INO_INVALID_DATA |
| 1543 | | NFS_INO_INVALID_ACCESS |
| 1544 | | NFS_INO_INVALID_ACL |
| 1545 | | NFS_INO_REVAL_PAGECACHE; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1546 | if (S_ISDIR(inode->i_mode)) |
| 1547 | nfs_force_lookup_revalidate(inode); |
Trond Myklebust | a9a4a87 | 2011-10-17 16:08:46 -0700 | [diff] [blame] | 1548 | inode->i_version = fattr->change_attr; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1549 | } |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1550 | } else if (server->caps & NFS_CAP_CHANGE_ATTR) |
| 1551 | invalid |= save_cache_validity; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1552 | |
| 1553 | if (fattr->valid & NFS_ATTR_FATTR_MTIME) { |
Trond Myklebust | fee7fe1 | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 1554 | memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime)); |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1555 | } else if (server->caps & NFS_CAP_MTIME) |
| 1556 | invalid |= save_cache_validity & (NFS_INO_INVALID_ATTR |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1557 | | NFS_INO_REVAL_FORCED); |
| 1558 | |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1559 | if (fattr->valid & NFS_ATTR_FATTR_CTIME) { |
Trond Myklebust | fee7fe1 | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 1560 | memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime)); |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1561 | } else if (server->caps & NFS_CAP_CTIME) |
| 1562 | invalid |= save_cache_validity & (NFS_INO_INVALID_ATTR |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1563 | | NFS_INO_REVAL_FORCED); |
Trond Myklebust | 47aabaa | 2007-09-27 15:57:24 -0400 | [diff] [blame] | 1564 | |
Trond Myklebust | 951a143 | 2005-06-22 17:16:30 +0000 | [diff] [blame] | 1565 | /* Check if our cached file size is stale */ |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1566 | if (fattr->valid & NFS_ATTR_FATTR_SIZE) { |
| 1567 | new_isize = nfs_size_to_loff_t(fattr->size); |
| 1568 | cur_isize = i_size_read(inode); |
| 1569 | if (new_isize != cur_isize) { |
| 1570 | /* Do we perhaps have any outstanding writes, or has |
| 1571 | * the file grown beyond our last write? */ |
Trond Myklebust | d8c951c | 2014-01-13 12:08:11 -0500 | [diff] [blame] | 1572 | if ((nfsi->npages == 0) || new_isize > cur_isize) { |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1573 | i_size_write(inode, new_isize); |
| 1574 | invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
| 1575 | } |
Harshula Jayasuriya | 60c16ea | 2011-05-23 22:52:11 +1000 | [diff] [blame] | 1576 | dprintk("NFS: isize change on server for file %s/%ld " |
| 1577 | "(%Ld to %Ld)\n", |
| 1578 | inode->i_sb->s_id, |
| 1579 | inode->i_ino, |
| 1580 | (long long)cur_isize, |
| 1581 | (long long)new_isize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1582 | } |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1583 | } else |
| 1584 | invalid |= save_cache_validity & (NFS_INO_INVALID_ATTR |
| 1585 | | NFS_INO_REVAL_PAGECACHE |
| 1586 | | NFS_INO_REVAL_FORCED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1588 | |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1589 | if (fattr->valid & NFS_ATTR_FATTR_ATIME) |
| 1590 | memcpy(&inode->i_atime, &fattr->atime, sizeof(inode->i_atime)); |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1591 | else if (server->caps & NFS_CAP_ATIME) |
| 1592 | invalid |= save_cache_validity & (NFS_INO_INVALID_ATIME |
| 1593 | | NFS_INO_REVAL_FORCED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1594 | |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1595 | if (fattr->valid & NFS_ATTR_FATTR_MODE) { |
| 1596 | if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)) { |
Trond Myklebust | 9b4b351 | 2010-02-03 08:27:35 -0500 | [diff] [blame] | 1597 | umode_t newmode = inode->i_mode & S_IFMT; |
| 1598 | newmode |= fattr->mode & S_IALLUGO; |
| 1599 | inode->i_mode = newmode; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1600 | invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL; |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1601 | } |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1602 | } else if (server->caps & NFS_CAP_MODE) |
| 1603 | invalid |= save_cache_validity & (NFS_INO_INVALID_ATTR |
| 1604 | | NFS_INO_INVALID_ACCESS |
| 1605 | | NFS_INO_INVALID_ACL |
| 1606 | | NFS_INO_REVAL_FORCED); |
| 1607 | |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1608 | if (fattr->valid & NFS_ATTR_FATTR_OWNER) { |
Eric W. Biederman | 9ff593c | 2013-02-01 14:26:23 -0800 | [diff] [blame] | 1609 | if (!uid_eq(inode->i_uid, fattr->uid)) { |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1610 | invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL; |
| 1611 | inode->i_uid = fattr->uid; |
| 1612 | } |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1613 | } else if (server->caps & NFS_CAP_OWNER) |
| 1614 | invalid |= save_cache_validity & (NFS_INO_INVALID_ATTR |
| 1615 | | NFS_INO_INVALID_ACCESS |
| 1616 | | NFS_INO_INVALID_ACL |
| 1617 | | NFS_INO_REVAL_FORCED); |
| 1618 | |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1619 | if (fattr->valid & NFS_ATTR_FATTR_GROUP) { |
Eric W. Biederman | 9ff593c | 2013-02-01 14:26:23 -0800 | [diff] [blame] | 1620 | if (!gid_eq(inode->i_gid, fattr->gid)) { |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1621 | invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL; |
| 1622 | inode->i_gid = fattr->gid; |
| 1623 | } |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1624 | } else if (server->caps & NFS_CAP_OWNER_GROUP) |
| 1625 | invalid |= save_cache_validity & (NFS_INO_INVALID_ATTR |
| 1626 | | NFS_INO_INVALID_ACCESS |
| 1627 | | NFS_INO_INVALID_ACL |
| 1628 | | NFS_INO_REVAL_FORCED); |
Trond Myklebust | 921615f | 2008-10-14 19:23:07 -0400 | [diff] [blame] | 1629 | |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1630 | if (fattr->valid & NFS_ATTR_FATTR_NLINK) { |
| 1631 | if (inode->i_nlink != fattr->nlink) { |
| 1632 | invalid |= NFS_INO_INVALID_ATTR; |
| 1633 | if (S_ISDIR(inode->i_mode)) |
| 1634 | invalid |= NFS_INO_INVALID_DATA; |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 1635 | set_nlink(inode, fattr->nlink); |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1636 | } |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1637 | } else if (server->caps & NFS_CAP_NLINK) |
| 1638 | invalid |= save_cache_validity & (NFS_INO_INVALID_ATTR |
| 1639 | | NFS_INO_REVAL_FORCED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1640 | |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1641 | if (fattr->valid & NFS_ATTR_FATTR_SPACE_USED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | /* |
| 1643 | * report the blocks in 512byte units |
| 1644 | */ |
| 1645 | inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1646 | } |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 1647 | if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED) |
| 1648 | inode->i_blocks = fattr->du.nfs2.blocks; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1649 | |
| 1650 | /* Update attrtimeo value if we're out of the unstable period */ |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 1651 | if (invalid & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL)) { |
Chuck Lever | 91d5b47 | 2006-03-20 13:44:14 -0500 | [diff] [blame] | 1652 | nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1653 | nfsi->attrtimeo = NFS_MINATTRTIMEO(inode); |
Trond Myklebust | 3e7d950 | 2007-02-05 14:26:28 -0800 | [diff] [blame] | 1654 | nfsi->attrtimeo_timestamp = now; |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 1655 | nfsi->attr_gencount = nfs_inc_attr_generation_counter(); |
Trond Myklebust | 6d2b296 | 2007-10-01 18:57:50 -0400 | [diff] [blame] | 1656 | } else { |
Peter Staubach | 64672d5 | 2008-12-23 15:21:56 -0500 | [diff] [blame] | 1657 | if (!time_in_range_open(now, nfsi->attrtimeo_timestamp, nfsi->attrtimeo_timestamp + nfsi->attrtimeo)) { |
Trond Myklebust | 6d2b296 | 2007-10-01 18:57:50 -0400 | [diff] [blame] | 1658 | if ((nfsi->attrtimeo <<= 1) > NFS_MAXATTRTIMEO(inode)) |
| 1659 | nfsi->attrtimeo = NFS_MAXATTRTIMEO(inode); |
| 1660 | nfsi->attrtimeo_timestamp = now; |
| 1661 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1662 | } |
Trond Myklebust | f2115dc | 2007-08-15 12:49:17 -0400 | [diff] [blame] | 1663 | invalid &= ~NFS_INO_INVALID_ATTR; |
David Quigley | aa9c266 | 2013-05-22 12:50:44 -0400 | [diff] [blame] | 1664 | invalid &= ~NFS_INO_INVALID_LABEL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | /* Don't invalidate the data if we were to blame */ |
| 1666 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) |
| 1667 | || S_ISLNK(inode->i_mode))) |
| 1668 | invalid &= ~NFS_INO_INVALID_DATA; |
Bryan Schumaker | 011e2a7 | 2012-06-20 15:53:43 -0400 | [diff] [blame] | 1669 | if (!NFS_PROTO(inode)->have_delegation(inode, FMODE_READ) || |
Trond Myklebust | 62ab460c | 2009-08-09 15:06:19 -0400 | [diff] [blame] | 1670 | (save_cache_validity & NFS_INO_REVAL_FORCED)) |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 1671 | nfsi->cache_validity |= invalid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | |
David Howells | de242c0 | 2012-12-20 21:52:38 +0000 | [diff] [blame] | 1673 | if (invalid & NFS_INO_INVALID_DATA) |
| 1674 | nfs_fscache_invalidate(inode); |
| 1675 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1676 | return 0; |
Trond Myklebust | b37b03b | 2005-11-25 17:10:06 -0500 | [diff] [blame] | 1677 | out_err: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1678 | /* |
| 1679 | * No need to worry about unhashing the dentry, as the |
| 1680 | * lookup validation will know that the inode is bad. |
| 1681 | * (But we fall through to invalidate the caches.) |
| 1682 | */ |
| 1683 | nfs_invalidate_inode(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1684 | return -ESTALE; |
| 1685 | } |
| 1686 | |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 1687 | struct inode *nfs_alloc_inode(struct super_block *sb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1688 | { |
| 1689 | struct nfs_inode *nfsi; |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 1690 | nfsi = (struct nfs_inode *)kmem_cache_alloc(nfs_inode_cachep, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1691 | if (!nfsi) |
| 1692 | return NULL; |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 1693 | nfsi->flags = 0UL; |
| 1694 | nfsi->cache_validity = 0UL; |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1695 | #if IS_ENABLED(CONFIG_NFS_V4) |
J. Bruce Fields | e50a1c2 | 2005-06-22 17:16:23 +0000 | [diff] [blame] | 1696 | nfsi->nfs4_acl = NULL; |
| 1697 | #endif /* CONFIG_NFS_V4 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | return &nfsi->vfs_inode; |
| 1699 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1700 | EXPORT_SYMBOL_GPL(nfs_alloc_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | |
Nick Piggin | fa0d7e3d | 2011-01-07 17:49:49 +1100 | [diff] [blame] | 1702 | static void nfs_i_callback(struct rcu_head *head) |
| 1703 | { |
| 1704 | struct inode *inode = container_of(head, struct inode, i_rcu); |
Nick Piggin | fa0d7e3d | 2011-01-07 17:49:49 +1100 | [diff] [blame] | 1705 | kmem_cache_free(nfs_inode_cachep, NFS_I(inode)); |
| 1706 | } |
| 1707 | |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 1708 | void nfs_destroy_inode(struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | { |
Nick Piggin | fa0d7e3d | 2011-01-07 17:49:49 +1100 | [diff] [blame] | 1710 | call_rcu(&inode->i_rcu, nfs_i_callback); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | } |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1712 | EXPORT_SYMBOL_GPL(nfs_destroy_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1713 | |
Andrew Morton | d75d541 | 2006-06-25 02:41:26 -0700 | [diff] [blame] | 1714 | static inline void nfs4_init_once(struct nfs_inode *nfsi) |
| 1715 | { |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1716 | #if IS_ENABLED(CONFIG_NFS_V4) |
Andrew Morton | d75d541 | 2006-06-25 02:41:26 -0700 | [diff] [blame] | 1717 | INIT_LIST_HEAD(&nfsi->open_states); |
| 1718 | nfsi->delegation = NULL; |
| 1719 | nfsi->delegation_state = 0; |
| 1720 | init_rwsem(&nfsi->rwsem); |
Benny Halevy | e5e9401 | 2010-10-20 00:18:01 -0400 | [diff] [blame] | 1721 | nfsi->layout = NULL; |
Andrew Morton | d75d541 | 2006-06-25 02:41:26 -0700 | [diff] [blame] | 1722 | #endif |
| 1723 | } |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 1724 | |
Alexey Dobriyan | 51cc506 | 2008-07-25 19:45:34 -0700 | [diff] [blame] | 1725 | static void init_once(void *foo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | { |
| 1727 | struct nfs_inode *nfsi = (struct nfs_inode *) foo; |
| 1728 | |
Christoph Lameter | a35afb8 | 2007-05-16 22:10:57 -0700 | [diff] [blame] | 1729 | inode_init_once(&nfsi->vfs_inode); |
Christoph Lameter | a35afb8 | 2007-05-16 22:10:57 -0700 | [diff] [blame] | 1730 | INIT_LIST_HEAD(&nfsi->open_files); |
| 1731 | INIT_LIST_HEAD(&nfsi->access_cache_entry_lru); |
| 1732 | INIT_LIST_HEAD(&nfsi->access_cache_inode_lru); |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 1733 | INIT_LIST_HEAD(&nfsi->commit_info.list); |
Christoph Lameter | a35afb8 | 2007-05-16 22:10:57 -0700 | [diff] [blame] | 1734 | nfsi->npages = 0; |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 1735 | nfsi->commit_info.ncommit = 0; |
Trond Myklebust | 1a0de48 | 2012-06-19 18:38:56 -0400 | [diff] [blame] | 1736 | atomic_set(&nfsi->commit_info.rpcs_out, 0); |
Trond Myklebust | 565277f | 2007-10-15 18:17:53 -0400 | [diff] [blame] | 1737 | atomic_set(&nfsi->silly_count, 1); |
| 1738 | INIT_HLIST_HEAD(&nfsi->silly_list); |
| 1739 | init_waitqueue_head(&nfsi->waitqueue); |
Christoph Lameter | a35afb8 | 2007-05-16 22:10:57 -0700 | [diff] [blame] | 1740 | nfs4_init_once(nfsi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1741 | } |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 1742 | |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 1743 | static int __init nfs_init_inodecache(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | { |
| 1745 | nfs_inode_cachep = kmem_cache_create("nfs_inode_cache", |
| 1746 | sizeof(struct nfs_inode), |
Paul Jackson | fffb60f | 2006-03-24 03:16:06 -0800 | [diff] [blame] | 1747 | 0, (SLAB_RECLAIM_ACCOUNT| |
| 1748 | SLAB_MEM_SPREAD), |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 1749 | init_once); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | if (nfs_inode_cachep == NULL) |
| 1751 | return -ENOMEM; |
| 1752 | |
| 1753 | return 0; |
| 1754 | } |
| 1755 | |
David Brownell | 266bee8 | 2006-06-27 12:59:15 -0700 | [diff] [blame] | 1756 | static void nfs_destroy_inodecache(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | { |
Kirill A. Shutemov | 8c0a853 | 2012-09-26 11:33:07 +1000 | [diff] [blame] | 1758 | /* |
| 1759 | * Make sure all delayed rcu free inodes are flushed before we |
| 1760 | * destroy cache. |
| 1761 | */ |
| 1762 | rcu_barrier(); |
Alexey Dobriyan | 1a1d92c | 2006-09-27 01:49:40 -0700 | [diff] [blame] | 1763 | kmem_cache_destroy(nfs_inode_cachep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | } |
| 1765 | |
Trond Myklebust | 5746006 | 2008-02-19 20:04:22 -0500 | [diff] [blame] | 1766 | struct workqueue_struct *nfsiod_workqueue; |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1767 | EXPORT_SYMBOL_GPL(nfsiod_workqueue); |
Trond Myklebust | 5746006 | 2008-02-19 20:04:22 -0500 | [diff] [blame] | 1768 | |
| 1769 | /* |
| 1770 | * start up the nfsiod workqueue |
| 1771 | */ |
| 1772 | static int nfsiod_start(void) |
| 1773 | { |
| 1774 | struct workqueue_struct *wq; |
| 1775 | dprintk("RPC: creating workqueue nfsiod\n"); |
Tejun Heo | ada609e | 2011-01-25 14:35:54 +0100 | [diff] [blame] | 1776 | wq = alloc_workqueue("nfsiod", WQ_MEM_RECLAIM, 0); |
Trond Myklebust | 5746006 | 2008-02-19 20:04:22 -0500 | [diff] [blame] | 1777 | if (wq == NULL) |
| 1778 | return -ENOMEM; |
| 1779 | nfsiod_workqueue = wq; |
| 1780 | return 0; |
| 1781 | } |
| 1782 | |
| 1783 | /* |
| 1784 | * Destroy the nfsiod workqueue |
| 1785 | */ |
| 1786 | static void nfsiod_stop(void) |
| 1787 | { |
| 1788 | struct workqueue_struct *wq; |
| 1789 | |
| 1790 | wq = nfsiod_workqueue; |
| 1791 | if (wq == NULL) |
| 1792 | return; |
| 1793 | nfsiod_workqueue = NULL; |
| 1794 | destroy_workqueue(wq); |
| 1795 | } |
| 1796 | |
Stanislav Kinsbursky | 1b340d0 | 2011-11-25 17:13:04 +0300 | [diff] [blame] | 1797 | int nfs_net_id; |
Stanislav Kinsbursky | 9e2e74d | 2012-01-10 17:04:24 +0400 | [diff] [blame] | 1798 | EXPORT_SYMBOL_GPL(nfs_net_id); |
Stanislav Kinsbursky | 1b340d0 | 2011-11-25 17:13:04 +0300 | [diff] [blame] | 1799 | |
| 1800 | static int nfs_net_init(struct net *net) |
| 1801 | { |
Stanislav Kinsbursky | 6b13168 | 2012-01-23 17:26:05 +0000 | [diff] [blame] | 1802 | nfs_clients_init(net); |
Trond Myklebust | c8d74d9 | 2013-06-01 11:50:58 -0400 | [diff] [blame] | 1803 | return 0; |
Stanislav Kinsbursky | 1b340d0 | 2011-11-25 17:13:04 +0300 | [diff] [blame] | 1804 | } |
| 1805 | |
| 1806 | static void nfs_net_exit(struct net *net) |
| 1807 | { |
Stanislav Kinsbursky | 28cd1b3 | 2012-01-23 17:26:22 +0000 | [diff] [blame] | 1808 | nfs_cleanup_cb_ident_idr(net); |
Stanislav Kinsbursky | 1b340d0 | 2011-11-25 17:13:04 +0300 | [diff] [blame] | 1809 | } |
| 1810 | |
| 1811 | static struct pernet_operations nfs_net_ops = { |
| 1812 | .init = nfs_net_init, |
| 1813 | .exit = nfs_net_exit, |
| 1814 | .id = &nfs_net_id, |
| 1815 | .size = sizeof(struct nfs_net), |
| 1816 | }; |
| 1817 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1818 | /* |
| 1819 | * Initialize NFS |
| 1820 | */ |
| 1821 | static int __init init_nfs_fs(void) |
| 1822 | { |
| 1823 | int err; |
| 1824 | |
Stanislav Kinsbursky | 1b340d0 | 2011-11-25 17:13:04 +0300 | [diff] [blame] | 1825 | err = register_pernet_subsys(&nfs_net_ops); |
| 1826 | if (err < 0) |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1827 | goto out9; |
Trond Myklebust | e571cbf | 2009-08-19 18:12:27 -0400 | [diff] [blame] | 1828 | |
David Howells | 8ec442a | 2009-04-03 16:42:42 +0100 | [diff] [blame] | 1829 | err = nfs_fscache_register(); |
| 1830 | if (err < 0) |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1831 | goto out8; |
David Howells | 8ec442a | 2009-04-03 16:42:42 +0100 | [diff] [blame] | 1832 | |
Trond Myklebust | 5746006 | 2008-02-19 20:04:22 -0500 | [diff] [blame] | 1833 | err = nfsiod_start(); |
| 1834 | if (err) |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1835 | goto out7; |
Trond Myklebust | 5746006 | 2008-02-19 20:04:22 -0500 | [diff] [blame] | 1836 | |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1837 | err = nfs_fs_proc_init(); |
| 1838 | if (err) |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1839 | goto out6; |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1840 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1841 | err = nfs_init_nfspagecache(); |
| 1842 | if (err) |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1843 | goto out5; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1844 | |
| 1845 | err = nfs_init_inodecache(); |
| 1846 | if (err) |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1847 | goto out4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1848 | |
| 1849 | err = nfs_init_readpagecache(); |
| 1850 | if (err) |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1851 | goto out3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1852 | |
| 1853 | err = nfs_init_writepagecache(); |
| 1854 | if (err) |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1855 | goto out2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | err = nfs_init_directcache(); |
| 1858 | if (err) |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1859 | goto out1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | |
| 1861 | #ifdef CONFIG_PROC_FS |
Stanislav Kinsbursky | ec7652a | 2011-12-06 16:42:40 +0300 | [diff] [blame] | 1862 | rpc_proc_register(&init_net, &nfs_rpcstat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | #endif |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 1864 | if ((err = register_nfs_fs()) != 0) |
Bryan Schumaker | 129d197 | 2012-07-16 16:39:13 -0400 | [diff] [blame] | 1865 | goto out0; |
| 1866 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | return 0; |
Bryan Schumaker | 129d197 | 2012-07-16 16:39:13 -0400 | [diff] [blame] | 1868 | out0: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | #ifdef CONFIG_PROC_FS |
Stanislav Kinsbursky | ec7652a | 2011-12-06 16:42:40 +0300 | [diff] [blame] | 1870 | rpc_proc_unregister(&init_net, "nfs"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1871 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1872 | nfs_destroy_directcache(); |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1873 | out1: |
Bryan Schumaker | 129d197 | 2012-07-16 16:39:13 -0400 | [diff] [blame] | 1874 | nfs_destroy_writepagecache(); |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1875 | out2: |
Bryan Schumaker | 129d197 | 2012-07-16 16:39:13 -0400 | [diff] [blame] | 1876 | nfs_destroy_readpagecache(); |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1877 | out3: |
Bryan Schumaker | 129d197 | 2012-07-16 16:39:13 -0400 | [diff] [blame] | 1878 | nfs_destroy_inodecache(); |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1879 | out4: |
Bryan Schumaker | 129d197 | 2012-07-16 16:39:13 -0400 | [diff] [blame] | 1880 | nfs_destroy_nfspagecache(); |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1881 | out5: |
Bryan Schumaker | 129d197 | 2012-07-16 16:39:13 -0400 | [diff] [blame] | 1882 | nfs_fs_proc_exit(); |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1883 | out6: |
Bryan Schumaker | 129d197 | 2012-07-16 16:39:13 -0400 | [diff] [blame] | 1884 | nfsiod_stop(); |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1885 | out7: |
Bryan Schumaker | 129d197 | 2012-07-16 16:39:13 -0400 | [diff] [blame] | 1886 | nfs_fscache_unregister(); |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1887 | out8: |
Bryan Schumaker | 129d197 | 2012-07-16 16:39:13 -0400 | [diff] [blame] | 1888 | unregister_pernet_subsys(&nfs_net_ops); |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 1889 | out9: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | return err; |
| 1891 | } |
| 1892 | |
| 1893 | static void __exit exit_nfs_fs(void) |
| 1894 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1895 | nfs_destroy_directcache(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1896 | nfs_destroy_writepagecache(); |
| 1897 | nfs_destroy_readpagecache(); |
| 1898 | nfs_destroy_inodecache(); |
| 1899 | nfs_destroy_nfspagecache(); |
David Howells | 8ec442a | 2009-04-03 16:42:42 +0100 | [diff] [blame] | 1900 | nfs_fscache_unregister(); |
Stanislav Kinsbursky | 1b340d0 | 2011-11-25 17:13:04 +0300 | [diff] [blame] | 1901 | unregister_pernet_subsys(&nfs_net_ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1902 | #ifdef CONFIG_PROC_FS |
Stanislav Kinsbursky | ec7652a | 2011-12-06 16:42:40 +0300 | [diff] [blame] | 1903 | rpc_proc_unregister(&init_net, "nfs"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1904 | #endif |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 1905 | unregister_nfs_fs(); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 1906 | nfs_fs_proc_exit(); |
Trond Myklebust | 5746006 | 2008-02-19 20:04:22 -0500 | [diff] [blame] | 1907 | nfsiod_stop(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1908 | } |
| 1909 | |
| 1910 | /* Not quite true; I just maintain it */ |
| 1911 | MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); |
| 1912 | MODULE_LICENSE("GPL"); |
Trond Myklebust | f43bf0b | 2007-10-09 12:01:04 -0400 | [diff] [blame] | 1913 | module_param(enable_ino64, bool, 0644); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1914 | |
| 1915 | module_init(init_nfs_fs) |
| 1916 | module_exit(exit_nfs_fs) |