12bad8471SEric Van Hensbergen /* 22bad8471SEric Van Hensbergen * linux/fs/9p/vfs_inode.c 32bad8471SEric Van Hensbergen * 473c592b9SEric Van Hensbergen * This file contains vfs inode ops for the 9P2000 protocol. 52bad8471SEric Van Hensbergen * 62bad8471SEric Van Hensbergen * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com> 72bad8471SEric Van Hensbergen * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> 82bad8471SEric Van Hensbergen * 92bad8471SEric Van Hensbergen * This program is free software; you can redistribute it and/or modify 1042e8c509SEric Van Hensbergen * it under the terms of the GNU General Public License version 2 1142e8c509SEric Van Hensbergen * as published by the Free Software Foundation. 122bad8471SEric Van Hensbergen * 132bad8471SEric Van Hensbergen * This program is distributed in the hope that it will be useful, 142bad8471SEric Van Hensbergen * but WITHOUT ANY WARRANTY; without even the implied warranty of 152bad8471SEric Van Hensbergen * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 162bad8471SEric Van Hensbergen * GNU General Public License for more details. 172bad8471SEric Van Hensbergen * 182bad8471SEric Van Hensbergen * You should have received a copy of the GNU General Public License 192bad8471SEric Van Hensbergen * along with this program; if not, write to: 202bad8471SEric Van Hensbergen * Free Software Foundation 212bad8471SEric Van Hensbergen * 51 Franklin Street, Fifth Floor 222bad8471SEric Van Hensbergen * Boston, MA 02111-1301 USA 232bad8471SEric Van Hensbergen * 242bad8471SEric Van Hensbergen */ 252bad8471SEric Van Hensbergen 262bad8471SEric Van Hensbergen #include <linux/module.h> 272bad8471SEric Van Hensbergen #include <linux/errno.h> 282bad8471SEric Van Hensbergen #include <linux/fs.h> 292bad8471SEric Van Hensbergen #include <linux/file.h> 302bad8471SEric Van Hensbergen #include <linux/pagemap.h> 312bad8471SEric Van Hensbergen #include <linux/stat.h> 322bad8471SEric Van Hensbergen #include <linux/string.h> 332bad8471SEric Van Hensbergen #include <linux/inet.h> 342bad8471SEric Van Hensbergen #include <linux/namei.h> 352bad8471SEric Van Hensbergen #include <linux/idr.h> 36e8edc6e0SAlexey Dobriyan #include <linux/sched.h> 375a0e3ad6STejun Heo #include <linux/slab.h> 38ebf46264SAneesh Kumar K.V #include <linux/xattr.h> 3985ff872dSAneesh Kumar K.V #include <linux/posix_acl.h> 40bd238fb4SLatchesar Ionkov #include <net/9p/9p.h> 41bd238fb4SLatchesar Ionkov #include <net/9p/client.h> 422bad8471SEric Van Hensbergen 432bad8471SEric Van Hensbergen #include "v9fs.h" 442bad8471SEric Van Hensbergen #include "v9fs_vfs.h" 452bad8471SEric Van Hensbergen #include "fid.h" 4660e78d2cSAbhishek Kulkarni #include "cache.h" 47ebf46264SAneesh Kumar K.V #include "xattr.h" 4885ff872dSAneesh Kumar K.V #include "acl.h" 492bad8471SEric Van Hensbergen 50754661f1SArjan van de Ven static const struct inode_operations v9fs_dir_inode_operations; 519b6533c9SSripathi Kodi static const struct inode_operations v9fs_dir_inode_operations_dotu; 52754661f1SArjan van de Ven static const struct inode_operations v9fs_file_inode_operations; 53754661f1SArjan van de Ven static const struct inode_operations v9fs_symlink_inode_operations; 54f5fc6145SAneesh Kumar K.V 552bad8471SEric Van Hensbergen /** 562bad8471SEric Van Hensbergen * unixmode2p9mode - convert unix mode bits to plan 9 572bad8471SEric Van Hensbergen * @v9ses: v9fs session information 582bad8471SEric Van Hensbergen * @mode: mode to convert 592bad8471SEric Van Hensbergen * 602bad8471SEric Van Hensbergen */ 612bad8471SEric Van Hensbergen 6273c592b9SEric Van Hensbergen static int unixmode2p9mode(struct v9fs_session_info *v9ses, int mode) 632bad8471SEric Van Hensbergen { 642bad8471SEric Van Hensbergen int res; 652bad8471SEric Van Hensbergen res = mode & 0777; 662bad8471SEric Van Hensbergen if (S_ISDIR(mode)) 67bd238fb4SLatchesar Ionkov res |= P9_DMDIR; 68dd6102fbSSripathi Kodi if (v9fs_proto_dotu(v9ses)) { 692bad8471SEric Van Hensbergen if (S_ISLNK(mode)) 70bd238fb4SLatchesar Ionkov res |= P9_DMSYMLINK; 712bad8471SEric Van Hensbergen if (v9ses->nodev == 0) { 722bad8471SEric Van Hensbergen if (S_ISSOCK(mode)) 73bd238fb4SLatchesar Ionkov res |= P9_DMSOCKET; 742bad8471SEric Van Hensbergen if (S_ISFIFO(mode)) 75bd238fb4SLatchesar Ionkov res |= P9_DMNAMEDPIPE; 762bad8471SEric Van Hensbergen if (S_ISBLK(mode)) 77bd238fb4SLatchesar Ionkov res |= P9_DMDEVICE; 782bad8471SEric Van Hensbergen if (S_ISCHR(mode)) 79bd238fb4SLatchesar Ionkov res |= P9_DMDEVICE; 802bad8471SEric Van Hensbergen } 812bad8471SEric Van Hensbergen 822bad8471SEric Van Hensbergen if ((mode & S_ISUID) == S_ISUID) 83bd238fb4SLatchesar Ionkov res |= P9_DMSETUID; 842bad8471SEric Van Hensbergen if ((mode & S_ISGID) == S_ISGID) 85bd238fb4SLatchesar Ionkov res |= P9_DMSETGID; 86d199d652SAnthony Liguori if ((mode & S_ISVTX) == S_ISVTX) 87d199d652SAnthony Liguori res |= P9_DMSETVTX; 88bd238fb4SLatchesar Ionkov if ((mode & P9_DMLINK)) 89bd238fb4SLatchesar Ionkov res |= P9_DMLINK; 902bad8471SEric Van Hensbergen } 912bad8471SEric Van Hensbergen 922bad8471SEric Van Hensbergen return res; 932bad8471SEric Van Hensbergen } 942bad8471SEric Van Hensbergen 952bad8471SEric Van Hensbergen /** 962bad8471SEric Van Hensbergen * p9mode2unixmode- convert plan9 mode bits to unix mode bits 972bad8471SEric Van Hensbergen * @v9ses: v9fs session information 982bad8471SEric Van Hensbergen * @mode: mode to convert 992bad8471SEric Van Hensbergen * 1002bad8471SEric Van Hensbergen */ 1012bad8471SEric Van Hensbergen 10273c592b9SEric Van Hensbergen static int p9mode2unixmode(struct v9fs_session_info *v9ses, int mode) 1032bad8471SEric Van Hensbergen { 1042bad8471SEric Van Hensbergen int res; 1052bad8471SEric Van Hensbergen 1062bad8471SEric Van Hensbergen res = mode & 0777; 1072bad8471SEric Van Hensbergen 108bd238fb4SLatchesar Ionkov if ((mode & P9_DMDIR) == P9_DMDIR) 1092bad8471SEric Van Hensbergen res |= S_IFDIR; 110dd6102fbSSripathi Kodi else if ((mode & P9_DMSYMLINK) && (v9fs_proto_dotu(v9ses))) 1112bad8471SEric Van Hensbergen res |= S_IFLNK; 112dd6102fbSSripathi Kodi else if ((mode & P9_DMSOCKET) && (v9fs_proto_dotu(v9ses)) 1132bad8471SEric Van Hensbergen && (v9ses->nodev == 0)) 1142bad8471SEric Van Hensbergen res |= S_IFSOCK; 115dd6102fbSSripathi Kodi else if ((mode & P9_DMNAMEDPIPE) && (v9fs_proto_dotu(v9ses)) 1162bad8471SEric Van Hensbergen && (v9ses->nodev == 0)) 1172bad8471SEric Van Hensbergen res |= S_IFIFO; 118dd6102fbSSripathi Kodi else if ((mode & P9_DMDEVICE) && (v9fs_proto_dotu(v9ses)) 1192bad8471SEric Van Hensbergen && (v9ses->nodev == 0)) 1202bad8471SEric Van Hensbergen res |= S_IFBLK; 1212bad8471SEric Van Hensbergen else 1222bad8471SEric Van Hensbergen res |= S_IFREG; 1232bad8471SEric Van Hensbergen 124dd6102fbSSripathi Kodi if (v9fs_proto_dotu(v9ses)) { 125bd238fb4SLatchesar Ionkov if ((mode & P9_DMSETUID) == P9_DMSETUID) 1262bad8471SEric Van Hensbergen res |= S_ISUID; 1272bad8471SEric Van Hensbergen 128bd238fb4SLatchesar Ionkov if ((mode & P9_DMSETGID) == P9_DMSETGID) 1292bad8471SEric Van Hensbergen res |= S_ISGID; 130d199d652SAnthony Liguori 131d199d652SAnthony Liguori if ((mode & P9_DMSETVTX) == P9_DMSETVTX) 132d199d652SAnthony Liguori res |= S_ISVTX; 1332bad8471SEric Van Hensbergen } 1342bad8471SEric Van Hensbergen 1352bad8471SEric Van Hensbergen return res; 1362bad8471SEric Van Hensbergen } 1372bad8471SEric Van Hensbergen 138ee443996SEric Van Hensbergen /** 139ee443996SEric Van Hensbergen * v9fs_uflags2omode- convert posix open flags to plan 9 mode bits 140ee443996SEric Van Hensbergen * @uflags: flags to convert 1412e4bef41SEric Van Hensbergen * @extended: if .u extensions are active 142ee443996SEric Van Hensbergen */ 143ee443996SEric Van Hensbergen 1442e4bef41SEric Van Hensbergen int v9fs_uflags2omode(int uflags, int extended) 1456a3124a3SLatchesar Ionkov { 1466a3124a3SLatchesar Ionkov int ret; 1476a3124a3SLatchesar Ionkov 1486a3124a3SLatchesar Ionkov ret = 0; 1496a3124a3SLatchesar Ionkov switch (uflags&3) { 1506a3124a3SLatchesar Ionkov default: 1516a3124a3SLatchesar Ionkov case O_RDONLY: 152bd238fb4SLatchesar Ionkov ret = P9_OREAD; 1536a3124a3SLatchesar Ionkov break; 1546a3124a3SLatchesar Ionkov 1556a3124a3SLatchesar Ionkov case O_WRONLY: 156bd238fb4SLatchesar Ionkov ret = P9_OWRITE; 1576a3124a3SLatchesar Ionkov break; 1586a3124a3SLatchesar Ionkov 1596a3124a3SLatchesar Ionkov case O_RDWR: 160bd238fb4SLatchesar Ionkov ret = P9_ORDWR; 1616a3124a3SLatchesar Ionkov break; 1626a3124a3SLatchesar Ionkov } 1636a3124a3SLatchesar Ionkov 1646a3124a3SLatchesar Ionkov if (uflags & O_TRUNC) 165bd238fb4SLatchesar Ionkov ret |= P9_OTRUNC; 1666a3124a3SLatchesar Ionkov 1672e4bef41SEric Van Hensbergen if (extended) { 1682e4bef41SEric Van Hensbergen if (uflags & O_EXCL) 1692e4bef41SEric Van Hensbergen ret |= P9_OEXCL; 1702e4bef41SEric Van Hensbergen 1716a3124a3SLatchesar Ionkov if (uflags & O_APPEND) 172bd238fb4SLatchesar Ionkov ret |= P9_OAPPEND; 1732e4bef41SEric Van Hensbergen } 1746a3124a3SLatchesar Ionkov 1756a3124a3SLatchesar Ionkov return ret; 1766a3124a3SLatchesar Ionkov } 1776a3124a3SLatchesar Ionkov 1782bad8471SEric Van Hensbergen /** 179531b1094SLatchesar Ionkov * v9fs_blank_wstat - helper function to setup a 9P stat structure 180531b1094SLatchesar Ionkov * @wstat: structure to initialize 1812bad8471SEric Van Hensbergen * 1822bad8471SEric Van Hensbergen */ 1832bad8471SEric Van Hensbergen 1847a4439c4SM. Mohan Kumar void 185bd238fb4SLatchesar Ionkov v9fs_blank_wstat(struct p9_wstat *wstat) 1862bad8471SEric Van Hensbergen { 187531b1094SLatchesar Ionkov wstat->type = ~0; 188531b1094SLatchesar Ionkov wstat->dev = ~0; 189531b1094SLatchesar Ionkov wstat->qid.type = ~0; 190531b1094SLatchesar Ionkov wstat->qid.version = ~0; 191531b1094SLatchesar Ionkov *((long long *)&wstat->qid.path) = ~0; 192531b1094SLatchesar Ionkov wstat->mode = ~0; 193531b1094SLatchesar Ionkov wstat->atime = ~0; 194531b1094SLatchesar Ionkov wstat->mtime = ~0; 195531b1094SLatchesar Ionkov wstat->length = ~0; 196531b1094SLatchesar Ionkov wstat->name = NULL; 197531b1094SLatchesar Ionkov wstat->uid = NULL; 198531b1094SLatchesar Ionkov wstat->gid = NULL; 199531b1094SLatchesar Ionkov wstat->muid = NULL; 200531b1094SLatchesar Ionkov wstat->n_uid = ~0; 201531b1094SLatchesar Ionkov wstat->n_gid = ~0; 202531b1094SLatchesar Ionkov wstat->n_muid = ~0; 203531b1094SLatchesar Ionkov wstat->extension = NULL; 2042bad8471SEric Van Hensbergen } 2052bad8471SEric Van Hensbergen 20660e78d2cSAbhishek Kulkarni /** 20760e78d2cSAbhishek Kulkarni * v9fs_alloc_inode - helper function to allocate an inode 20860e78d2cSAbhishek Kulkarni * 20960e78d2cSAbhishek Kulkarni */ 21060e78d2cSAbhishek Kulkarni struct inode *v9fs_alloc_inode(struct super_block *sb) 21160e78d2cSAbhishek Kulkarni { 212a78ce05dSAneesh Kumar K.V struct v9fs_inode *v9inode; 213a78ce05dSAneesh Kumar K.V v9inode = (struct v9fs_inode *)kmem_cache_alloc(v9fs_inode_cache, 21460e78d2cSAbhishek Kulkarni GFP_KERNEL); 215a78ce05dSAneesh Kumar K.V if (!v9inode) 21660e78d2cSAbhishek Kulkarni return NULL; 217a78ce05dSAneesh Kumar K.V #ifdef CONFIG_9P_FSCACHE 218a78ce05dSAneesh Kumar K.V v9inode->fscache = NULL; 219a78ce05dSAneesh Kumar K.V v9inode->fscache_key = NULL; 220a78ce05dSAneesh Kumar K.V spin_lock_init(&v9inode->fscache_lock); 221a78ce05dSAneesh Kumar K.V #endif 2226b39f6d2SAneesh Kumar K.V v9inode->writeback_fid = NULL; 223b3cbea03SAneesh Kumar K.V v9inode->cache_validity = 0; 2245a7e0a8cSAneesh Kumar K.V mutex_init(&v9inode->v_mutex); 225a78ce05dSAneesh Kumar K.V return &v9inode->vfs_inode; 22660e78d2cSAbhishek Kulkarni } 22760e78d2cSAbhishek Kulkarni 22860e78d2cSAbhishek Kulkarni /** 22960e78d2cSAbhishek Kulkarni * v9fs_destroy_inode - destroy an inode 23060e78d2cSAbhishek Kulkarni * 23160e78d2cSAbhishek Kulkarni */ 23260e78d2cSAbhishek Kulkarni 233fa0d7e3dSNick Piggin static void v9fs_i_callback(struct rcu_head *head) 234fa0d7e3dSNick Piggin { 235fa0d7e3dSNick Piggin struct inode *inode = container_of(head, struct inode, i_rcu); 236fa0d7e3dSNick Piggin INIT_LIST_HEAD(&inode->i_dentry); 237a78ce05dSAneesh Kumar K.V kmem_cache_free(v9fs_inode_cache, V9FS_I(inode)); 238fa0d7e3dSNick Piggin } 239fa0d7e3dSNick Piggin 24060e78d2cSAbhishek Kulkarni void v9fs_destroy_inode(struct inode *inode) 24160e78d2cSAbhishek Kulkarni { 242fa0d7e3dSNick Piggin call_rcu(&inode->i_rcu, v9fs_i_callback); 24360e78d2cSAbhishek Kulkarni } 24460e78d2cSAbhishek Kulkarni 2455ffc0cb3SAneesh Kumar K.V int v9fs_init_inode(struct v9fs_session_info *v9ses, 2465ffc0cb3SAneesh Kumar K.V struct inode *inode, int mode) 2472bad8471SEric Van Hensbergen { 2485ffc0cb3SAneesh Kumar K.V int err = 0; 2492bb54115SAbhishek Kulkarni 250217f206dSDmitry Monakhov inode_init_owner(inode, NULL, mode); 2512bad8471SEric Van Hensbergen inode->i_blocks = 0; 2522bad8471SEric Van Hensbergen inode->i_rdev = 0; 2532bad8471SEric Van Hensbergen inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; 254147b31cfSEric Van Hensbergen inode->i_mapping->a_ops = &v9fs_addr_operations; 2552bad8471SEric Van Hensbergen 2562bad8471SEric Van Hensbergen switch (mode & S_IFMT) { 2572bad8471SEric Van Hensbergen case S_IFIFO: 2582bad8471SEric Van Hensbergen case S_IFBLK: 2592bad8471SEric Van Hensbergen case S_IFCHR: 2602bad8471SEric Van Hensbergen case S_IFSOCK: 2614b43516aSM. Mohan Kumar if (v9fs_proto_dotl(v9ses)) { 2624b43516aSM. Mohan Kumar inode->i_op = &v9fs_file_inode_operations_dotl; 2634b43516aSM. Mohan Kumar inode->i_fop = &v9fs_file_operations_dotl; 2644b43516aSM. Mohan Kumar } else if (v9fs_proto_dotu(v9ses)) { 2654b43516aSM. Mohan Kumar inode->i_op = &v9fs_file_inode_operations; 2664b43516aSM. Mohan Kumar inode->i_fop = &v9fs_file_operations; 2674b43516aSM. Mohan Kumar } else { 268bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_ERROR, 269bd238fb4SLatchesar Ionkov "special files without extended mode\n"); 2702bb54115SAbhishek Kulkarni err = -EINVAL; 2712bb54115SAbhishek Kulkarni goto error; 272b501611aSEric Van Hensbergen } 2732bb54115SAbhishek Kulkarni init_special_inode(inode, inode->i_mode, inode->i_rdev); 2745d58bec5SEric Van Hensbergen break; 2752bad8471SEric Van Hensbergen case S_IFREG: 2769b6533c9SSripathi Kodi if (v9fs_proto_dotl(v9ses)) { 2779b6533c9SSripathi Kodi inode->i_op = &v9fs_file_inode_operations_dotl; 27829236f4eSAneesh Kumar K.V if (v9ses->cache) 27929236f4eSAneesh Kumar K.V inode->i_fop = 28029236f4eSAneesh Kumar K.V &v9fs_cached_file_operations_dotl; 28129236f4eSAneesh Kumar K.V else 2829b6533c9SSripathi Kodi inode->i_fop = &v9fs_file_operations_dotl; 2839b6533c9SSripathi Kodi } else { 2842bad8471SEric Van Hensbergen inode->i_op = &v9fs_file_inode_operations; 28529236f4eSAneesh Kumar K.V if (v9ses->cache) 28629236f4eSAneesh Kumar K.V inode->i_fop = &v9fs_cached_file_operations; 28729236f4eSAneesh Kumar K.V else 2882bad8471SEric Van Hensbergen inode->i_fop = &v9fs_file_operations; 2899b6533c9SSripathi Kodi } 2909b6533c9SSripathi Kodi 2912bad8471SEric Van Hensbergen break; 292b501611aSEric Van Hensbergen case S_IFLNK: 2939b6533c9SSripathi Kodi if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) { 2949b6533c9SSripathi Kodi P9_DPRINTK(P9_DEBUG_ERROR, "extended modes used with " 2959b6533c9SSripathi Kodi "legacy protocol.\n"); 2962bb54115SAbhishek Kulkarni err = -EINVAL; 2972bb54115SAbhishek Kulkarni goto error; 298b501611aSEric Van Hensbergen } 2999b6533c9SSripathi Kodi 3009b6533c9SSripathi Kodi if (v9fs_proto_dotl(v9ses)) 3019b6533c9SSripathi Kodi inode->i_op = &v9fs_symlink_inode_operations_dotl; 3029b6533c9SSripathi Kodi else 303b501611aSEric Van Hensbergen inode->i_op = &v9fs_symlink_inode_operations; 3049b6533c9SSripathi Kodi 305b501611aSEric Van Hensbergen break; 3062bad8471SEric Van Hensbergen case S_IFDIR: 307d8c76e6fSDave Hansen inc_nlink(inode); 3089b6533c9SSripathi Kodi if (v9fs_proto_dotl(v9ses)) 3099b6533c9SSripathi Kodi inode->i_op = &v9fs_dir_inode_operations_dotl; 3109b6533c9SSripathi Kodi else if (v9fs_proto_dotu(v9ses)) 3119b6533c9SSripathi Kodi inode->i_op = &v9fs_dir_inode_operations_dotu; 312b501611aSEric Van Hensbergen else 3132bad8471SEric Van Hensbergen inode->i_op = &v9fs_dir_inode_operations; 3149b6533c9SSripathi Kodi 3159b6533c9SSripathi Kodi if (v9fs_proto_dotl(v9ses)) 3169b6533c9SSripathi Kodi inode->i_fop = &v9fs_dir_operations_dotl; 3179b6533c9SSripathi Kodi else 3182bad8471SEric Van Hensbergen inode->i_fop = &v9fs_dir_operations; 3199b6533c9SSripathi Kodi 3202bad8471SEric Van Hensbergen break; 3212bad8471SEric Van Hensbergen default: 3222bb54115SAbhishek Kulkarni P9_DPRINTK(P9_DEBUG_ERROR, "BAD mode 0x%x S_IFMT 0x%x\n", 3232bad8471SEric Van Hensbergen mode, mode & S_IFMT); 3242bb54115SAbhishek Kulkarni err = -EINVAL; 3252bb54115SAbhishek Kulkarni goto error; 3262bad8471SEric Van Hensbergen } 3272bb54115SAbhishek Kulkarni error: 3285ffc0cb3SAneesh Kumar K.V return err; 3295ffc0cb3SAneesh Kumar K.V 3305ffc0cb3SAneesh Kumar K.V } 3315ffc0cb3SAneesh Kumar K.V 3325ffc0cb3SAneesh Kumar K.V /** 3335ffc0cb3SAneesh Kumar K.V * v9fs_get_inode - helper function to setup an inode 3345ffc0cb3SAneesh Kumar K.V * @sb: superblock 3355ffc0cb3SAneesh Kumar K.V * @mode: mode to setup inode with 3365ffc0cb3SAneesh Kumar K.V * 3375ffc0cb3SAneesh Kumar K.V */ 3385ffc0cb3SAneesh Kumar K.V 3395ffc0cb3SAneesh Kumar K.V struct inode *v9fs_get_inode(struct super_block *sb, int mode) 3405ffc0cb3SAneesh Kumar K.V { 3415ffc0cb3SAneesh Kumar K.V int err; 3425ffc0cb3SAneesh Kumar K.V struct inode *inode; 3435ffc0cb3SAneesh Kumar K.V struct v9fs_session_info *v9ses = sb->s_fs_info; 3445ffc0cb3SAneesh Kumar K.V 3455ffc0cb3SAneesh Kumar K.V P9_DPRINTK(P9_DEBUG_VFS, "super block: %p mode: %o\n", sb, mode); 3465ffc0cb3SAneesh Kumar K.V 3475ffc0cb3SAneesh Kumar K.V inode = new_inode(sb); 3485ffc0cb3SAneesh Kumar K.V if (!inode) { 3495ffc0cb3SAneesh Kumar K.V P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n"); 3505ffc0cb3SAneesh Kumar K.V return ERR_PTR(-ENOMEM); 3515ffc0cb3SAneesh Kumar K.V } 3525ffc0cb3SAneesh Kumar K.V err = v9fs_init_inode(v9ses, inode, mode); 3535ffc0cb3SAneesh Kumar K.V if (err) { 3542bb54115SAbhishek Kulkarni iput(inode); 3552bb54115SAbhishek Kulkarni return ERR_PTR(err); 3562bad8471SEric Van Hensbergen } 3575ffc0cb3SAneesh Kumar K.V return inode; 3585ffc0cb3SAneesh Kumar K.V } 3592bad8471SEric Van Hensbergen 360bd238fb4SLatchesar Ionkov /* 3616a3124a3SLatchesar Ionkov static struct v9fs_fid* 3626a3124a3SLatchesar Ionkov v9fs_clone_walk(struct v9fs_session_info *v9ses, u32 fid, struct dentry *dentry) 3636a3124a3SLatchesar Ionkov { 3646a3124a3SLatchesar Ionkov int err; 365736c4b85SMika Kukkonen int nfid; 3666a3124a3SLatchesar Ionkov struct v9fs_fid *ret; 3676a3124a3SLatchesar Ionkov struct v9fs_fcall *fcall; 3680b8dd177SLatchesar Ionkov 3696a3124a3SLatchesar Ionkov nfid = v9fs_get_idpool(&v9ses->fidpool); 3706a3124a3SLatchesar Ionkov if (nfid < 0) { 3710b8dd177SLatchesar Ionkov eprintk(KERN_WARNING, "no free fids available\n"); 372731805b4SLatchesar Ionkov return ERR_PTR(-ENOSPC); 3730b8dd177SLatchesar Ionkov } 3740b8dd177SLatchesar Ionkov 3756a3124a3SLatchesar Ionkov err = v9fs_t_walk(v9ses, fid, nfid, (char *) dentry->d_name.name, 3766a3124a3SLatchesar Ionkov &fcall); 3776a3124a3SLatchesar Ionkov 3786a3124a3SLatchesar Ionkov if (err < 0) { 37941e5a6acSLatchesar Ionkov if (fcall && fcall->id == RWALK) 38041e5a6acSLatchesar Ionkov goto clunk_fid; 38141e5a6acSLatchesar Ionkov 3826a3124a3SLatchesar Ionkov PRINT_FCALL_ERROR("walk error", fcall); 3836a3124a3SLatchesar Ionkov v9fs_put_idpool(nfid, &v9ses->fidpool); 3846a3124a3SLatchesar Ionkov goto error; 3850b8dd177SLatchesar Ionkov } 3866a3124a3SLatchesar Ionkov 3873cf6429aSLatchesar Ionkov kfree(fcall); 3883cf6429aSLatchesar Ionkov fcall = NULL; 3896a3124a3SLatchesar Ionkov ret = v9fs_fid_create(v9ses, nfid); 3906a3124a3SLatchesar Ionkov if (!ret) { 3916a3124a3SLatchesar Ionkov err = -ENOMEM; 3926a3124a3SLatchesar Ionkov goto clunk_fid; 3930b8dd177SLatchesar Ionkov } 3942bad8471SEric Van Hensbergen 3956a3124a3SLatchesar Ionkov err = v9fs_fid_insert(ret, dentry); 3966a3124a3SLatchesar Ionkov if (err < 0) { 3976a3124a3SLatchesar Ionkov v9fs_fid_destroy(ret); 3986a3124a3SLatchesar Ionkov goto clunk_fid; 3996a3124a3SLatchesar Ionkov } 4002bad8471SEric Van Hensbergen 4016a3124a3SLatchesar Ionkov return ret; 4026a3124a3SLatchesar Ionkov 4036a3124a3SLatchesar Ionkov clunk_fid: 4046a3124a3SLatchesar Ionkov v9fs_t_clunk(v9ses, nfid); 4056a3124a3SLatchesar Ionkov 4066a3124a3SLatchesar Ionkov error: 4076a3124a3SLatchesar Ionkov kfree(fcall); 4086a3124a3SLatchesar Ionkov return ERR_PTR(err); 4096a3124a3SLatchesar Ionkov } 410bd238fb4SLatchesar Ionkov */ 4116a3124a3SLatchesar Ionkov 41260e78d2cSAbhishek Kulkarni 41360e78d2cSAbhishek Kulkarni /** 41460e78d2cSAbhishek Kulkarni * v9fs_clear_inode - release an inode 41560e78d2cSAbhishek Kulkarni * @inode: inode to release 41660e78d2cSAbhishek Kulkarni * 41760e78d2cSAbhishek Kulkarni */ 418b57922d9SAl Viro void v9fs_evict_inode(struct inode *inode) 41960e78d2cSAbhishek Kulkarni { 4206b39f6d2SAneesh Kumar K.V struct v9fs_inode *v9inode = V9FS_I(inode); 4216b39f6d2SAneesh Kumar K.V 422b57922d9SAl Viro truncate_inode_pages(inode->i_mapping, 0); 423b57922d9SAl Viro end_writeback(inode); 42460e78d2cSAbhishek Kulkarni filemap_fdatawrite(inode->i_mapping); 42560e78d2cSAbhishek Kulkarni 42660e78d2cSAbhishek Kulkarni #ifdef CONFIG_9P_FSCACHE 42760e78d2cSAbhishek Kulkarni v9fs_cache_inode_put_cookie(inode); 42860e78d2cSAbhishek Kulkarni #endif 4296b39f6d2SAneesh Kumar K.V /* clunk the fid stashed in writeback_fid */ 4306b39f6d2SAneesh Kumar K.V if (v9inode->writeback_fid) { 4316b39f6d2SAneesh Kumar K.V p9_client_clunk(v9inode->writeback_fid); 4326b39f6d2SAneesh Kumar K.V v9inode->writeback_fid = NULL; 4333cf387d7SAneesh Kumar K.V } 43460e78d2cSAbhishek Kulkarni } 43560e78d2cSAbhishek Kulkarni 4365ffc0cb3SAneesh Kumar K.V static struct inode *v9fs_qid_iget(struct super_block *sb, 4375ffc0cb3SAneesh Kumar K.V struct p9_qid *qid, 4385ffc0cb3SAneesh Kumar K.V struct p9_wstat *st) 4395ffc0cb3SAneesh Kumar K.V { 4405ffc0cb3SAneesh Kumar K.V int retval, umode; 4415ffc0cb3SAneesh Kumar K.V unsigned long i_ino; 4425ffc0cb3SAneesh Kumar K.V struct inode *inode; 4435ffc0cb3SAneesh Kumar K.V struct v9fs_session_info *v9ses = sb->s_fs_info; 4445ffc0cb3SAneesh Kumar K.V 4455ffc0cb3SAneesh Kumar K.V i_ino = v9fs_qid2ino(qid); 4465ffc0cb3SAneesh Kumar K.V inode = iget_locked(sb, i_ino); 4475ffc0cb3SAneesh Kumar K.V if (!inode) 4485ffc0cb3SAneesh Kumar K.V return ERR_PTR(-ENOMEM); 4495ffc0cb3SAneesh Kumar K.V if (!(inode->i_state & I_NEW)) 4505ffc0cb3SAneesh Kumar K.V return inode; 4515ffc0cb3SAneesh Kumar K.V /* 4525ffc0cb3SAneesh Kumar K.V * initialize the inode with the stat info 4535ffc0cb3SAneesh Kumar K.V * FIXME!! we may need support for stale inodes 4545ffc0cb3SAneesh Kumar K.V * later. 4555ffc0cb3SAneesh Kumar K.V */ 4565ffc0cb3SAneesh Kumar K.V umode = p9mode2unixmode(v9ses, st->mode); 4575ffc0cb3SAneesh Kumar K.V retval = v9fs_init_inode(v9ses, inode, umode); 4585ffc0cb3SAneesh Kumar K.V if (retval) 4595ffc0cb3SAneesh Kumar K.V goto error; 4605ffc0cb3SAneesh Kumar K.V 4615ffc0cb3SAneesh Kumar K.V v9fs_stat2inode(st, inode, sb); 4625ffc0cb3SAneesh Kumar K.V #ifdef CONFIG_9P_FSCACHE 463a78ce05dSAneesh Kumar K.V v9fs_fscache_set_key(inode, &st->qid); 4645ffc0cb3SAneesh Kumar K.V v9fs_cache_inode_get_cookie(inode); 4655ffc0cb3SAneesh Kumar K.V #endif 4665ffc0cb3SAneesh Kumar K.V unlock_new_inode(inode); 4675ffc0cb3SAneesh Kumar K.V return inode; 4685ffc0cb3SAneesh Kumar K.V error: 4695ffc0cb3SAneesh Kumar K.V unlock_new_inode(inode); 4705ffc0cb3SAneesh Kumar K.V iput(inode); 4715ffc0cb3SAneesh Kumar K.V return ERR_PTR(retval); 4725ffc0cb3SAneesh Kumar K.V 4735ffc0cb3SAneesh Kumar K.V } 4745ffc0cb3SAneesh Kumar K.V 47553c06f4eSAneesh Kumar K.V struct inode * 476a78ce05dSAneesh Kumar K.V v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid, 4776a3124a3SLatchesar Ionkov struct super_block *sb) 4786a3124a3SLatchesar Ionkov { 47951a87c55SEric Van Hensbergen struct p9_wstat *st; 4805ffc0cb3SAneesh Kumar K.V struct inode *inode = NULL; 4816a3124a3SLatchesar Ionkov 482bd238fb4SLatchesar Ionkov st = p9_client_stat(fid); 48302bc3567SAbhishek Kulkarni if (IS_ERR(st)) 48402bc3567SAbhishek Kulkarni return ERR_CAST(st); 4852bad8471SEric Van Hensbergen 4865ffc0cb3SAneesh Kumar K.V inode = v9fs_qid_iget(sb, &st->qid, st); 48702bc3567SAbhishek Kulkarni p9stat_free(st); 488bd238fb4SLatchesar Ionkov kfree(st); 4895ffc0cb3SAneesh Kumar K.V return inode; 4902bad8471SEric Van Hensbergen } 4912bad8471SEric Van Hensbergen 4922bad8471SEric Van Hensbergen /** 4932bad8471SEric Van Hensbergen * v9fs_remove - helper function to remove files and directories 49473c592b9SEric Van Hensbergen * @dir: directory inode that is being deleted 49573c592b9SEric Van Hensbergen * @file: dentry that is being deleted 49673c592b9SEric Van Hensbergen * @rmdir: removing a directory 4972bad8471SEric Van Hensbergen * 4982bad8471SEric Van Hensbergen */ 4992bad8471SEric Van Hensbergen 5002bad8471SEric Van Hensbergen static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir) 5012bad8471SEric Van Hensbergen { 502d994f405SAneesh Kumar K.V int retval; 503bd238fb4SLatchesar Ionkov struct p9_fid *v9fid; 504d28c61f0SAneesh Kumar K.V struct inode *file_inode; 5052bad8471SEric Van Hensbergen 506bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "inode: %p dentry: %p rmdir: %d\n", dir, file, 5072bad8471SEric Van Hensbergen rmdir); 5082bad8471SEric Van Hensbergen 5092bad8471SEric Van Hensbergen file_inode = file->d_inode; 510c959df9fSLatchesar Ionkov v9fid = v9fs_fid_clone(file); 511da977b2cSEric Van Hensbergen if (IS_ERR(v9fid)) 512da977b2cSEric Van Hensbergen return PTR_ERR(v9fid); 5132bad8471SEric Van Hensbergen 514d994f405SAneesh Kumar K.V retval = p9_client_remove(v9fid); 515b271ec47SAneesh Kumar K.V if (!retval) { 516b271ec47SAneesh Kumar K.V /* 517b271ec47SAneesh Kumar K.V * directories on unlink should have zero 518b271ec47SAneesh Kumar K.V * link count 519b271ec47SAneesh Kumar K.V */ 520b271ec47SAneesh Kumar K.V if (rmdir) { 521b271ec47SAneesh Kumar K.V clear_nlink(file_inode); 522b271ec47SAneesh Kumar K.V drop_nlink(dir); 523b271ec47SAneesh Kumar K.V } else 524d994f405SAneesh Kumar K.V drop_nlink(file_inode); 525d28c61f0SAneesh Kumar K.V 5263bc86de3SAneesh Kumar K.V v9fs_invalidate_inode_attr(file_inode); 527d28c61f0SAneesh Kumar K.V v9fs_invalidate_inode_attr(dir); 528b271ec47SAneesh Kumar K.V } 529d994f405SAneesh Kumar K.V return retval; 5302bad8471SEric Van Hensbergen } 5312bad8471SEric Van Hensbergen 532bd238fb4SLatchesar Ionkov /** 533bd238fb4SLatchesar Ionkov * v9fs_create - Create a file 534ee443996SEric Van Hensbergen * @v9ses: session information 535ee443996SEric Van Hensbergen * @dir: directory that dentry is being created in 536bd238fb4SLatchesar Ionkov * @dentry: dentry that is being created 5370e15597eSAbhishek Kulkarni * @extension: 9p2000.u extension string to support devices, etc. 538bd238fb4SLatchesar Ionkov * @perm: create permissions 539bd238fb4SLatchesar Ionkov * @mode: open mode 540bd238fb4SLatchesar Ionkov * 541bd238fb4SLatchesar Ionkov */ 542bd238fb4SLatchesar Ionkov static struct p9_fid * 543bd238fb4SLatchesar Ionkov v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, 544bd238fb4SLatchesar Ionkov struct dentry *dentry, char *extension, u32 perm, u8 mode) 545bd238fb4SLatchesar Ionkov { 546bd238fb4SLatchesar Ionkov int err; 547bd238fb4SLatchesar Ionkov char *name; 548bd238fb4SLatchesar Ionkov struct p9_fid *dfid, *ofid, *fid; 549bd238fb4SLatchesar Ionkov struct inode *inode; 550bd238fb4SLatchesar Ionkov 55151a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); 55251a87c55SEric Van Hensbergen 553bd238fb4SLatchesar Ionkov err = 0; 554bd238fb4SLatchesar Ionkov ofid = NULL; 555bd238fb4SLatchesar Ionkov fid = NULL; 556bd238fb4SLatchesar Ionkov name = (char *) dentry->d_name.name; 5576d27e64dSVenkateswararao Jujjuri dfid = v9fs_fid_lookup(dentry->d_parent); 558bd238fb4SLatchesar Ionkov if (IS_ERR(dfid)) { 559bd238fb4SLatchesar Ionkov err = PTR_ERR(dfid); 5606d27e64dSVenkateswararao Jujjuri P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); 5616d27e64dSVenkateswararao Jujjuri return ERR_PTR(err); 562bd238fb4SLatchesar Ionkov } 563bd238fb4SLatchesar Ionkov 564bd238fb4SLatchesar Ionkov /* clone a fid to use for creation */ 565bd238fb4SLatchesar Ionkov ofid = p9_client_walk(dfid, 0, NULL, 1); 566bd238fb4SLatchesar Ionkov if (IS_ERR(ofid)) { 567bd238fb4SLatchesar Ionkov err = PTR_ERR(ofid); 56851a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); 5696d27e64dSVenkateswararao Jujjuri return ERR_PTR(err); 570bd238fb4SLatchesar Ionkov } 571bd238fb4SLatchesar Ionkov 572bd238fb4SLatchesar Ionkov err = p9_client_fcreate(ofid, name, perm, mode, extension); 57351a87c55SEric Van Hensbergen if (err < 0) { 57451a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "p9_client_fcreate failed %d\n", err); 575bd238fb4SLatchesar Ionkov goto error; 57651a87c55SEric Van Hensbergen } 577bd238fb4SLatchesar Ionkov 578bd238fb4SLatchesar Ionkov /* now walk from the parent so we can get unopened fid */ 5796d27e64dSVenkateswararao Jujjuri fid = p9_client_walk(dfid, 1, &name, 1); 580bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) { 581bd238fb4SLatchesar Ionkov err = PTR_ERR(fid); 58251a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); 583bd238fb4SLatchesar Ionkov fid = NULL; 584bd238fb4SLatchesar Ionkov goto error; 5856d27e64dSVenkateswararao Jujjuri } 586bd238fb4SLatchesar Ionkov 587bd238fb4SLatchesar Ionkov /* instantiate inode and assign the unopened fid to the dentry */ 588a78ce05dSAneesh Kumar K.V inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb); 589bd238fb4SLatchesar Ionkov if (IS_ERR(inode)) { 590bd238fb4SLatchesar Ionkov err = PTR_ERR(inode); 59151a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err); 592bd238fb4SLatchesar Ionkov goto error; 593bd238fb4SLatchesar Ionkov } 594bd238fb4SLatchesar Ionkov d_instantiate(dentry, inode); 59550fb6d2bSAbhishek Kulkarni err = v9fs_fid_add(dentry, fid); 59650fb6d2bSAbhishek Kulkarni if (err < 0) 59750fb6d2bSAbhishek Kulkarni goto error; 59850fb6d2bSAbhishek Kulkarni 599bd238fb4SLatchesar Ionkov return ofid; 600bd238fb4SLatchesar Ionkov 601bd238fb4SLatchesar Ionkov error: 602bd238fb4SLatchesar Ionkov if (ofid) 603bd238fb4SLatchesar Ionkov p9_client_clunk(ofid); 604bd238fb4SLatchesar Ionkov 605bd238fb4SLatchesar Ionkov if (fid) 606bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 607bd238fb4SLatchesar Ionkov 608bd238fb4SLatchesar Ionkov return ERR_PTR(err); 609bd238fb4SLatchesar Ionkov } 610bd238fb4SLatchesar Ionkov 6112bad8471SEric Van Hensbergen /** 6122bad8471SEric Van Hensbergen * v9fs_vfs_create - VFS hook to create files 613ee443996SEric Van Hensbergen * @dir: directory inode that is being created 6142bad8471SEric Van Hensbergen * @dentry: dentry that is being deleted 6156a3124a3SLatchesar Ionkov * @mode: create permissions 6162bad8471SEric Van Hensbergen * @nd: path information 6172bad8471SEric Van Hensbergen * 6182bad8471SEric Van Hensbergen */ 6192bad8471SEric Van Hensbergen 6202bad8471SEric Van Hensbergen static int 6216a3124a3SLatchesar Ionkov v9fs_vfs_create(struct inode *dir, struct dentry *dentry, int mode, 6222bad8471SEric Van Hensbergen struct nameidata *nd) 6232bad8471SEric Van Hensbergen { 6246a3124a3SLatchesar Ionkov int err; 625bd238fb4SLatchesar Ionkov u32 perm; 6266a3124a3SLatchesar Ionkov int flags; 6276b39f6d2SAneesh Kumar K.V struct file *filp; 6286b39f6d2SAneesh Kumar K.V struct v9fs_inode *v9inode; 6296a3124a3SLatchesar Ionkov struct v9fs_session_info *v9ses; 6303cf387d7SAneesh Kumar K.V struct p9_fid *fid, *inode_fid; 6316a3124a3SLatchesar Ionkov 632bd238fb4SLatchesar Ionkov err = 0; 633bd238fb4SLatchesar Ionkov fid = NULL; 6346a3124a3SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dir); 635da977b2cSEric Van Hensbergen perm = unixmode2p9mode(v9ses, mode); 6366a3124a3SLatchesar Ionkov if (nd && nd->flags & LOOKUP_OPEN) 6376a3124a3SLatchesar Ionkov flags = nd->intent.open.flags - 1; 6386a3124a3SLatchesar Ionkov else 6396a3124a3SLatchesar Ionkov flags = O_RDWR; 6406a3124a3SLatchesar Ionkov 641bd238fb4SLatchesar Ionkov fid = v9fs_create(v9ses, dir, dentry, NULL, perm, 642dd6102fbSSripathi Kodi v9fs_uflags2omode(flags, 643dd6102fbSSripathi Kodi v9fs_proto_dotu(v9ses))); 644bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) { 645bd238fb4SLatchesar Ionkov err = PTR_ERR(fid); 646bd238fb4SLatchesar Ionkov fid = NULL; 6476a3124a3SLatchesar Ionkov goto error; 6486a3124a3SLatchesar Ionkov } 6496a3124a3SLatchesar Ionkov 650d28c61f0SAneesh Kumar K.V v9fs_invalidate_inode_attr(dir); 651bd238fb4SLatchesar Ionkov /* if we are opening a file, assign the open fid to the file */ 6526a3124a3SLatchesar Ionkov if (nd && nd->flags & LOOKUP_OPEN) { 6536b39f6d2SAneesh Kumar K.V v9inode = V9FS_I(dentry->d_inode); 6545a7e0a8cSAneesh Kumar K.V mutex_lock(&v9inode->v_mutex); 6557add697aSAneesh Kumar K.V if (v9ses->cache && !v9inode->writeback_fid && 6567add697aSAneesh Kumar K.V ((flags & O_ACCMODE) != O_RDONLY)) { 6573cf387d7SAneesh Kumar K.V /* 6586b39f6d2SAneesh Kumar K.V * clone a fid and add it to writeback_fid 6593cf387d7SAneesh Kumar K.V * we do it during open time instead of 6603cf387d7SAneesh Kumar K.V * page dirty time via write_begin/page_mkwrite 6613cf387d7SAneesh Kumar K.V * because we want write after unlink usecase 6623cf387d7SAneesh Kumar K.V * to work. 6633cf387d7SAneesh Kumar K.V */ 6643cf387d7SAneesh Kumar K.V inode_fid = v9fs_writeback_fid(dentry); 6653cf387d7SAneesh Kumar K.V if (IS_ERR(inode_fid)) { 6663cf387d7SAneesh Kumar K.V err = PTR_ERR(inode_fid); 6675a7e0a8cSAneesh Kumar K.V mutex_unlock(&v9inode->v_mutex); 6683cf387d7SAneesh Kumar K.V goto error; 6693cf387d7SAneesh Kumar K.V } 6706b39f6d2SAneesh Kumar K.V v9inode->writeback_fid = (void *) inode_fid; 6713cf387d7SAneesh Kumar K.V } 6725a7e0a8cSAneesh Kumar K.V mutex_unlock(&v9inode->v_mutex); 673877cb3d4SAneesh Kumar K.V filp = lookup_instantiate_filp(nd, dentry, generic_file_open); 6746a3124a3SLatchesar Ionkov if (IS_ERR(filp)) { 675bd238fb4SLatchesar Ionkov err = PTR_ERR(filp); 676bd238fb4SLatchesar Ionkov goto error; 6776a3124a3SLatchesar Ionkov } 6786a3124a3SLatchesar Ionkov 679bd238fb4SLatchesar Ionkov filp->private_data = fid; 68046848de0SAneesh Kumar K.V #ifdef CONFIG_9P_FSCACHE 68146848de0SAneesh Kumar K.V if (v9ses->cache) 68246848de0SAneesh Kumar K.V v9fs_cache_inode_set_cookie(dentry->d_inode, filp); 68346848de0SAneesh Kumar K.V #endif 684bd238fb4SLatchesar Ionkov } else 685bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 6866a3124a3SLatchesar Ionkov 6876a3124a3SLatchesar Ionkov return 0; 6886a3124a3SLatchesar Ionkov 6896a3124a3SLatchesar Ionkov error: 690bd238fb4SLatchesar Ionkov if (fid) 691bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 6926a3124a3SLatchesar Ionkov 6936a3124a3SLatchesar Ionkov return err; 6942bad8471SEric Van Hensbergen } 6952bad8471SEric Van Hensbergen 6962bad8471SEric Van Hensbergen /** 6972bad8471SEric Van Hensbergen * v9fs_vfs_mkdir - VFS mkdir hook to create a directory 698ee443996SEric Van Hensbergen * @dir: inode that is being unlinked 6992bad8471SEric Van Hensbergen * @dentry: dentry that is being unlinked 7002bad8471SEric Van Hensbergen * @mode: mode for new directory 7012bad8471SEric Van Hensbergen * 7022bad8471SEric Van Hensbergen */ 7032bad8471SEric Van Hensbergen 7046a3124a3SLatchesar Ionkov static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) 7052bad8471SEric Van Hensbergen { 7066a3124a3SLatchesar Ionkov int err; 707bd238fb4SLatchesar Ionkov u32 perm; 708bd238fb4SLatchesar Ionkov struct p9_fid *fid; 709d28c61f0SAneesh Kumar K.V struct v9fs_session_info *v9ses; 7106a3124a3SLatchesar Ionkov 711bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); 712bd238fb4SLatchesar Ionkov err = 0; 7136a3124a3SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dir); 7146a3124a3SLatchesar Ionkov perm = unixmode2p9mode(v9ses, mode | S_IFDIR); 715bd238fb4SLatchesar Ionkov fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_OREAD); 716bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) { 717bd238fb4SLatchesar Ionkov err = PTR_ERR(fid); 718bd238fb4SLatchesar Ionkov fid = NULL; 719d28c61f0SAneesh Kumar K.V } else { 720b271ec47SAneesh Kumar K.V inc_nlink(dir); 721d28c61f0SAneesh Kumar K.V v9fs_invalidate_inode_attr(dir); 722d28c61f0SAneesh Kumar K.V } 7236a3124a3SLatchesar Ionkov 724bd238fb4SLatchesar Ionkov if (fid) 725bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 7266a3124a3SLatchesar Ionkov 7276a3124a3SLatchesar Ionkov return err; 7282bad8471SEric Van Hensbergen } 7292bad8471SEric Van Hensbergen 7302bad8471SEric Van Hensbergen /** 7312bad8471SEric Van Hensbergen * v9fs_vfs_lookup - VFS lookup hook to "walk" to a new inode 7322bad8471SEric Van Hensbergen * @dir: inode that is being walked from 7332bad8471SEric Van Hensbergen * @dentry: dentry that is being walked to? 7342bad8471SEric Van Hensbergen * @nameidata: path data 7352bad8471SEric Van Hensbergen * 7362bad8471SEric Van Hensbergen */ 7372bad8471SEric Van Hensbergen 73853c06f4eSAneesh Kumar K.V struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, 7392bad8471SEric Van Hensbergen struct nameidata *nameidata) 7402bad8471SEric Van Hensbergen { 7412bad8471SEric Van Hensbergen struct super_block *sb; 7422bad8471SEric Van Hensbergen struct v9fs_session_info *v9ses; 743bd238fb4SLatchesar Ionkov struct p9_fid *dfid, *fid; 7442bad8471SEric Van Hensbergen struct inode *inode; 745bd238fb4SLatchesar Ionkov char *name; 7462bad8471SEric Van Hensbergen int result = 0; 7472bad8471SEric Van Hensbergen 748bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p nameidata: %p\n", 749731805b4SLatchesar Ionkov dir, dentry->d_name.name, dentry, nameidata); 7502bad8471SEric Van Hensbergen 75111e9b49bSSripathi Kodi if (dentry->d_name.len > NAME_MAX) 75211e9b49bSSripathi Kodi return ERR_PTR(-ENAMETOOLONG); 75311e9b49bSSripathi Kodi 7542bad8471SEric Van Hensbergen sb = dir->i_sb; 7552bad8471SEric Van Hensbergen v9ses = v9fs_inode2v9ses(dir); 756a534c8d1SAneesh Kumar K.V /* We can walk d_parent because we hold the dir->i_mutex */ 757bd238fb4SLatchesar Ionkov dfid = v9fs_fid_lookup(dentry->d_parent); 758bd238fb4SLatchesar Ionkov if (IS_ERR(dfid)) 759e231c2eeSDavid Howells return ERR_CAST(dfid); 7602bad8471SEric Van Hensbergen 761bd238fb4SLatchesar Ionkov name = (char *) dentry->d_name.name; 762bd238fb4SLatchesar Ionkov fid = p9_client_walk(dfid, 1, &name, 1); 763bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) { 764bd238fb4SLatchesar Ionkov result = PTR_ERR(fid); 7652bad8471SEric Van Hensbergen if (result == -ENOENT) { 76685e0df24SAneesh Kumar K.V inode = NULL; 76785e0df24SAneesh Kumar K.V goto inst_out; 7682bad8471SEric Van Hensbergen } 7692bad8471SEric Van Hensbergen 770bd238fb4SLatchesar Ionkov return ERR_PTR(result); 7712bad8471SEric Van Hensbergen } 7722bad8471SEric Van Hensbergen 773a78ce05dSAneesh Kumar K.V inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb); 774bd238fb4SLatchesar Ionkov if (IS_ERR(inode)) { 775bd238fb4SLatchesar Ionkov result = PTR_ERR(inode); 776bd238fb4SLatchesar Ionkov inode = NULL; 777bd238fb4SLatchesar Ionkov goto error; 7782bad8471SEric Van Hensbergen } 7792bad8471SEric Van Hensbergen 780bd238fb4SLatchesar Ionkov result = v9fs_fid_add(dentry, fid); 7816a3124a3SLatchesar Ionkov if (result < 0) 7829856af8bSAneesh Kumar K.V goto error_iput; 7836a3124a3SLatchesar Ionkov 78485e0df24SAneesh Kumar K.V inst_out: 7852bad8471SEric Van Hensbergen d_add(dentry, inode); 7862bad8471SEric Van Hensbergen return NULL; 7872bad8471SEric Van Hensbergen 7889856af8bSAneesh Kumar K.V error_iput: 7899856af8bSAneesh Kumar K.V iput(inode); 790bd238fb4SLatchesar Ionkov error: 791bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 792da977b2cSEric Van Hensbergen 7932bad8471SEric Van Hensbergen return ERR_PTR(result); 7942bad8471SEric Van Hensbergen } 7952bad8471SEric Van Hensbergen 7962bad8471SEric Van Hensbergen /** 7972bad8471SEric Van Hensbergen * v9fs_vfs_unlink - VFS unlink hook to delete an inode 7982bad8471SEric Van Hensbergen * @i: inode that is being unlinked 79973c592b9SEric Van Hensbergen * @d: dentry that is being unlinked 8002bad8471SEric Van Hensbergen * 8012bad8471SEric Van Hensbergen */ 8022bad8471SEric Van Hensbergen 80353c06f4eSAneesh Kumar K.V int v9fs_vfs_unlink(struct inode *i, struct dentry *d) 8042bad8471SEric Van Hensbergen { 8052bad8471SEric Van Hensbergen return v9fs_remove(i, d, 0); 8062bad8471SEric Van Hensbergen } 8072bad8471SEric Van Hensbergen 8082bad8471SEric Van Hensbergen /** 8092bad8471SEric Van Hensbergen * v9fs_vfs_rmdir - VFS unlink hook to delete a directory 8102bad8471SEric Van Hensbergen * @i: inode that is being unlinked 81173c592b9SEric Van Hensbergen * @d: dentry that is being unlinked 8122bad8471SEric Van Hensbergen * 8132bad8471SEric Van Hensbergen */ 8142bad8471SEric Van Hensbergen 81553c06f4eSAneesh Kumar K.V int v9fs_vfs_rmdir(struct inode *i, struct dentry *d) 8162bad8471SEric Van Hensbergen { 8172bad8471SEric Van Hensbergen return v9fs_remove(i, d, 1); 8182bad8471SEric Van Hensbergen } 8192bad8471SEric Van Hensbergen 8202bad8471SEric Van Hensbergen /** 8212bad8471SEric Van Hensbergen * v9fs_vfs_rename - VFS hook to rename an inode 8222bad8471SEric Van Hensbergen * @old_dir: old dir inode 8232bad8471SEric Van Hensbergen * @old_dentry: old dentry 8242bad8471SEric Van Hensbergen * @new_dir: new dir inode 8252bad8471SEric Van Hensbergen * @new_dentry: new dentry 8262bad8471SEric Van Hensbergen * 8272bad8471SEric Van Hensbergen */ 8282bad8471SEric Van Hensbergen 82953c06f4eSAneesh Kumar K.V int 8302bad8471SEric Van Hensbergen v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry, 8312bad8471SEric Van Hensbergen struct inode *new_dir, struct dentry *new_dentry) 8322bad8471SEric Van Hensbergen { 833d28c61f0SAneesh Kumar K.V int retval; 834bd238fb4SLatchesar Ionkov struct inode *old_inode; 835b271ec47SAneesh Kumar K.V struct inode *new_inode; 836bd238fb4SLatchesar Ionkov struct v9fs_session_info *v9ses; 837bd238fb4SLatchesar Ionkov struct p9_fid *oldfid; 838bd238fb4SLatchesar Ionkov struct p9_fid *olddirfid; 839bd238fb4SLatchesar Ionkov struct p9_fid *newdirfid; 840bd238fb4SLatchesar Ionkov struct p9_wstat wstat; 8412bad8471SEric Van Hensbergen 842bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "\n"); 843bd238fb4SLatchesar Ionkov retval = 0; 844bd238fb4SLatchesar Ionkov old_inode = old_dentry->d_inode; 845b271ec47SAneesh Kumar K.V new_inode = new_dentry->d_inode; 846bd238fb4SLatchesar Ionkov v9ses = v9fs_inode2v9ses(old_inode); 847bd238fb4SLatchesar Ionkov oldfid = v9fs_fid_lookup(old_dentry); 848da977b2cSEric Van Hensbergen if (IS_ERR(oldfid)) 849da977b2cSEric Van Hensbergen return PTR_ERR(oldfid); 850da977b2cSEric Van Hensbergen 851da977b2cSEric Van Hensbergen olddirfid = v9fs_fid_clone(old_dentry->d_parent); 852da977b2cSEric Van Hensbergen if (IS_ERR(olddirfid)) { 853da977b2cSEric Van Hensbergen retval = PTR_ERR(olddirfid); 854bd238fb4SLatchesar Ionkov goto done; 855da977b2cSEric Van Hensbergen } 856da977b2cSEric Van Hensbergen 857da977b2cSEric Van Hensbergen newdirfid = v9fs_fid_clone(new_dentry->d_parent); 858da977b2cSEric Van Hensbergen if (IS_ERR(newdirfid)) { 859da977b2cSEric Van Hensbergen retval = PTR_ERR(newdirfid); 860bd238fb4SLatchesar Ionkov goto clunk_olddir; 8612bad8471SEric Van Hensbergen } 8622bad8471SEric Van Hensbergen 863a534c8d1SAneesh Kumar K.V down_write(&v9ses->rename_sem); 8644681dbdaSSripathi Kodi if (v9fs_proto_dotl(v9ses)) { 8654681dbdaSSripathi Kodi retval = p9_client_rename(oldfid, newdirfid, 8664681dbdaSSripathi Kodi (char *) new_dentry->d_name.name); 8674681dbdaSSripathi Kodi if (retval != -ENOSYS) 8684681dbdaSSripathi Kodi goto clunk_newdir; 8694681dbdaSSripathi Kodi } 870a534c8d1SAneesh Kumar K.V if (old_dentry->d_parent != new_dentry->d_parent) { 871a534c8d1SAneesh Kumar K.V /* 872a534c8d1SAneesh Kumar K.V * 9P .u can only handle file rename in the same directory 873a534c8d1SAneesh Kumar K.V */ 8744681dbdaSSripathi Kodi 875bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_ERROR, 876bd238fb4SLatchesar Ionkov "old dir and new dir are different\n"); 877621997cdSEric Van Hensbergen retval = -EXDEV; 878bd238fb4SLatchesar Ionkov goto clunk_newdir; 8792bad8471SEric Van Hensbergen } 880531b1094SLatchesar Ionkov v9fs_blank_wstat(&wstat); 881ba17674fSLatchesar Ionkov wstat.muid = v9ses->uname; 882531b1094SLatchesar Ionkov wstat.name = (char *) new_dentry->d_name.name; 883bd238fb4SLatchesar Ionkov retval = p9_client_wstat(oldfid, &wstat); 8842bad8471SEric Van Hensbergen 885bd238fb4SLatchesar Ionkov clunk_newdir: 886b271ec47SAneesh Kumar K.V if (!retval) { 887b271ec47SAneesh Kumar K.V if (new_inode) { 888b271ec47SAneesh Kumar K.V if (S_ISDIR(new_inode->i_mode)) 889b271ec47SAneesh Kumar K.V clear_nlink(new_inode); 890b271ec47SAneesh Kumar K.V else 891b271ec47SAneesh Kumar K.V drop_nlink(new_inode); 89223b08e97SAneesh Kumar K.V /* 89323b08e97SAneesh Kumar K.V * Work around vfs rename rehash bug with 89423b08e97SAneesh Kumar K.V * FS_RENAME_DOES_D_MOVE 89523b08e97SAneesh Kumar K.V */ 89623b08e97SAneesh Kumar K.V v9fs_invalidate_inode_attr(new_inode); 897b271ec47SAneesh Kumar K.V } 898b271ec47SAneesh Kumar K.V if (S_ISDIR(old_inode->i_mode)) { 899b271ec47SAneesh Kumar K.V if (!new_inode) 900b271ec47SAneesh Kumar K.V inc_nlink(new_dir); 901b271ec47SAneesh Kumar K.V drop_nlink(old_dir); 902b271ec47SAneesh Kumar K.V } 9033bc86de3SAneesh Kumar K.V v9fs_invalidate_inode_attr(old_inode); 904d28c61f0SAneesh Kumar K.V v9fs_invalidate_inode_attr(old_dir); 905d28c61f0SAneesh Kumar K.V v9fs_invalidate_inode_attr(new_dir); 9063bc86de3SAneesh Kumar K.V 907a534c8d1SAneesh Kumar K.V /* successful rename */ 908a534c8d1SAneesh Kumar K.V d_move(old_dentry, new_dentry); 909b271ec47SAneesh Kumar K.V } 910a534c8d1SAneesh Kumar K.V up_write(&v9ses->rename_sem); 91122150c4fSLatchesar Ionkov p9_client_clunk(newdirfid); 9122bad8471SEric Van Hensbergen 913bd238fb4SLatchesar Ionkov clunk_olddir: 91422150c4fSLatchesar Ionkov p9_client_clunk(olddirfid); 9152bad8471SEric Van Hensbergen 916bd238fb4SLatchesar Ionkov done: 9172bad8471SEric Van Hensbergen return retval; 9182bad8471SEric Van Hensbergen } 9192bad8471SEric Van Hensbergen 9202bad8471SEric Van Hensbergen /** 921943ffb58SAdrian Bunk * v9fs_vfs_getattr - retrieve file metadata 922ee443996SEric Van Hensbergen * @mnt: mount information 923ee443996SEric Van Hensbergen * @dentry: file to get attributes on 924ee443996SEric Van Hensbergen * @stat: metadata structure to populate 9252bad8471SEric Van Hensbergen * 9262bad8471SEric Van Hensbergen */ 9272bad8471SEric Van Hensbergen 9282bad8471SEric Van Hensbergen static int 9292bad8471SEric Van Hensbergen v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry, 9302bad8471SEric Van Hensbergen struct kstat *stat) 9312bad8471SEric Van Hensbergen { 932bd238fb4SLatchesar Ionkov int err; 933bd238fb4SLatchesar Ionkov struct v9fs_session_info *v9ses; 934bd238fb4SLatchesar Ionkov struct p9_fid *fid; 93551a87c55SEric Van Hensbergen struct p9_wstat *st; 9362bad8471SEric Van Hensbergen 937bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry); 938bd238fb4SLatchesar Ionkov err = -EPERM; 93942869c8aSAneesh Kumar K.V v9ses = v9fs_dentry2v9ses(dentry); 940a1211908SAneesh Kumar K.V if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { 941a1211908SAneesh Kumar K.V generic_fillattr(dentry->d_inode, stat); 942a1211908SAneesh Kumar K.V return 0; 943a1211908SAneesh Kumar K.V } 944bd238fb4SLatchesar Ionkov fid = v9fs_fid_lookup(dentry); 945da977b2cSEric Van Hensbergen if (IS_ERR(fid)) 946da977b2cSEric Van Hensbergen return PTR_ERR(fid); 9472bad8471SEric Van Hensbergen 948bd238fb4SLatchesar Ionkov st = p9_client_stat(fid); 949bd238fb4SLatchesar Ionkov if (IS_ERR(st)) 950bd238fb4SLatchesar Ionkov return PTR_ERR(st); 9512bad8471SEric Van Hensbergen 952bd238fb4SLatchesar Ionkov v9fs_stat2inode(st, dentry->d_inode, dentry->d_inode->i_sb); 9532bad8471SEric Van Hensbergen generic_fillattr(dentry->d_inode, stat); 9542bad8471SEric Van Hensbergen 95562b2be59SLatchesar Ionkov p9stat_free(st); 956bd238fb4SLatchesar Ionkov kfree(st); 957bd238fb4SLatchesar Ionkov return 0; 9582bad8471SEric Van Hensbergen } 9592bad8471SEric Van Hensbergen 9602bad8471SEric Van Hensbergen /** 9612bad8471SEric Van Hensbergen * v9fs_vfs_setattr - set file metadata 9622bad8471SEric Van Hensbergen * @dentry: file whose metadata to set 9632bad8471SEric Van Hensbergen * @iattr: metadata assignment structure 9642bad8471SEric Van Hensbergen * 9652bad8471SEric Van Hensbergen */ 9662bad8471SEric Van Hensbergen 9672bad8471SEric Van Hensbergen static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr) 9682bad8471SEric Van Hensbergen { 969bd238fb4SLatchesar Ionkov int retval; 970bd238fb4SLatchesar Ionkov struct v9fs_session_info *v9ses; 971bd238fb4SLatchesar Ionkov struct p9_fid *fid; 972bd238fb4SLatchesar Ionkov struct p9_wstat wstat; 9732bad8471SEric Van Hensbergen 974bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "\n"); 975059c138bSAneesh Kumar K.V retval = inode_change_ok(dentry->d_inode, iattr); 976059c138bSAneesh Kumar K.V if (retval) 977059c138bSAneesh Kumar K.V return retval; 978059c138bSAneesh Kumar K.V 979bd238fb4SLatchesar Ionkov retval = -EPERM; 98042869c8aSAneesh Kumar K.V v9ses = v9fs_dentry2v9ses(dentry); 981bd238fb4SLatchesar Ionkov fid = v9fs_fid_lookup(dentry); 982da977b2cSEric Van Hensbergen if(IS_ERR(fid)) 983da977b2cSEric Van Hensbergen return PTR_ERR(fid); 9842bad8471SEric Van Hensbergen 985531b1094SLatchesar Ionkov v9fs_blank_wstat(&wstat); 9862bad8471SEric Van Hensbergen if (iattr->ia_valid & ATTR_MODE) 987531b1094SLatchesar Ionkov wstat.mode = unixmode2p9mode(v9ses, iattr->ia_mode); 9882bad8471SEric Van Hensbergen 9892bad8471SEric Van Hensbergen if (iattr->ia_valid & ATTR_MTIME) 990531b1094SLatchesar Ionkov wstat.mtime = iattr->ia_mtime.tv_sec; 9912bad8471SEric Van Hensbergen 9922bad8471SEric Van Hensbergen if (iattr->ia_valid & ATTR_ATIME) 993531b1094SLatchesar Ionkov wstat.atime = iattr->ia_atime.tv_sec; 9942bad8471SEric Van Hensbergen 9952bad8471SEric Van Hensbergen if (iattr->ia_valid & ATTR_SIZE) 996531b1094SLatchesar Ionkov wstat.length = iattr->ia_size; 9972bad8471SEric Van Hensbergen 998dd6102fbSSripathi Kodi if (v9fs_proto_dotu(v9ses)) { 999531b1094SLatchesar Ionkov if (iattr->ia_valid & ATTR_UID) 1000531b1094SLatchesar Ionkov wstat.n_uid = iattr->ia_uid; 10012bad8471SEric Van Hensbergen 1002531b1094SLatchesar Ionkov if (iattr->ia_valid & ATTR_GID) 1003531b1094SLatchesar Ionkov wstat.n_gid = iattr->ia_gid; 10042bad8471SEric Van Hensbergen } 1005059c138bSAneesh Kumar K.V 10063dc5436aSAneesh Kumar K.V /* Write all dirty data */ 10073dc5436aSAneesh Kumar K.V if (S_ISREG(dentry->d_inode->i_mode)) 10083dc5436aSAneesh Kumar K.V filemap_write_and_wait(dentry->d_inode->i_mapping); 10093dc5436aSAneesh Kumar K.V 1010f10fc50fSAneesh Kumar K.V retval = p9_client_wstat(fid, &wstat); 1011f10fc50fSAneesh Kumar K.V if (retval < 0) 1012f10fc50fSAneesh Kumar K.V return retval; 1013059c138bSAneesh Kumar K.V 1014059c138bSAneesh Kumar K.V if ((iattr->ia_valid & ATTR_SIZE) && 1015059c138bSAneesh Kumar K.V iattr->ia_size != i_size_read(dentry->d_inode)) 1016059c138bSAneesh Kumar K.V truncate_setsize(dentry->d_inode, iattr->ia_size); 1017059c138bSAneesh Kumar K.V 1018f10fc50fSAneesh Kumar K.V v9fs_invalidate_inode_attr(dentry->d_inode); 10191025774cSChristoph Hellwig 10201025774cSChristoph Hellwig setattr_copy(dentry->d_inode, iattr); 10211025774cSChristoph Hellwig mark_inode_dirty(dentry->d_inode); 10221025774cSChristoph Hellwig return 0; 10232bad8471SEric Van Hensbergen } 10242bad8471SEric Van Hensbergen 10252bad8471SEric Van Hensbergen /** 1026531b1094SLatchesar Ionkov * v9fs_stat2inode - populate an inode structure with mistat info 1027531b1094SLatchesar Ionkov * @stat: Plan 9 metadata (mistat) structure 10282bad8471SEric Van Hensbergen * @inode: inode to populate 10292bad8471SEric Van Hensbergen * @sb: superblock of filesystem 10302bad8471SEric Van Hensbergen * 10312bad8471SEric Van Hensbergen */ 10322bad8471SEric Van Hensbergen 10332bad8471SEric Van Hensbergen void 103451a87c55SEric Van Hensbergen v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode, 10352bad8471SEric Van Hensbergen struct super_block *sb) 10362bad8471SEric Van Hensbergen { 1037531b1094SLatchesar Ionkov char ext[32]; 10385717144aSAneesh Kumar K.V char tag_name[14]; 10395717144aSAneesh Kumar K.V unsigned int i_nlink; 10402bad8471SEric Van Hensbergen struct v9fs_session_info *v9ses = sb->s_fs_info; 1041b3cbea03SAneesh Kumar K.V struct v9fs_inode *v9inode = V9FS_I(inode); 10422bad8471SEric Van Hensbergen 10432bad8471SEric Van Hensbergen inode->i_nlink = 1; 10442bad8471SEric Van Hensbergen 1045531b1094SLatchesar Ionkov inode->i_atime.tv_sec = stat->atime; 1046531b1094SLatchesar Ionkov inode->i_mtime.tv_sec = stat->mtime; 1047531b1094SLatchesar Ionkov inode->i_ctime.tv_sec = stat->mtime; 10482bad8471SEric Van Hensbergen 1049bd32b82dSLatchesar Ionkov inode->i_uid = v9ses->dfltuid; 1050bd32b82dSLatchesar Ionkov inode->i_gid = v9ses->dfltgid; 10512bad8471SEric Van Hensbergen 1052dd6102fbSSripathi Kodi if (v9fs_proto_dotu(v9ses)) { 1053531b1094SLatchesar Ionkov inode->i_uid = stat->n_uid; 1054531b1094SLatchesar Ionkov inode->i_gid = stat->n_gid; 1055531b1094SLatchesar Ionkov } 10565717144aSAneesh Kumar K.V if ((S_ISREG(inode->i_mode)) || (S_ISDIR(inode->i_mode))) { 10575717144aSAneesh Kumar K.V if (v9fs_proto_dotu(v9ses) && (stat->extension[0] != '\0')) { 10585717144aSAneesh Kumar K.V /* 10595717144aSAneesh Kumar K.V * Hadlink support got added later to 10605717144aSAneesh Kumar K.V * to the .u extension. So there can be 10615717144aSAneesh Kumar K.V * server out there that doesn't support 10625717144aSAneesh Kumar K.V * this even with .u extension. So check 10635717144aSAneesh Kumar K.V * for non NULL stat->extension 10645717144aSAneesh Kumar K.V */ 10655717144aSAneesh Kumar K.V strncpy(ext, stat->extension, sizeof(ext)); 10665717144aSAneesh Kumar K.V /* HARDLINKCOUNT %u */ 10675717144aSAneesh Kumar K.V sscanf(ext, "%13s %u", tag_name, &i_nlink); 10685717144aSAneesh Kumar K.V if (!strncmp(tag_name, "HARDLINKCOUNT", 13)) 10695717144aSAneesh Kumar K.V inode->i_nlink = i_nlink; 10705717144aSAneesh Kumar K.V } 10715717144aSAneesh Kumar K.V } 1072531b1094SLatchesar Ionkov inode->i_mode = p9mode2unixmode(v9ses, stat->mode); 10732bad8471SEric Van Hensbergen if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode))) { 10742bad8471SEric Van Hensbergen char type = 0; 10752bad8471SEric Van Hensbergen int major = -1; 10762bad8471SEric Van Hensbergen int minor = -1; 1077531b1094SLatchesar Ionkov 107851a87c55SEric Van Hensbergen strncpy(ext, stat->extension, sizeof(ext)); 1079531b1094SLatchesar Ionkov sscanf(ext, "%c %u %u", &type, &major, &minor); 10802bad8471SEric Van Hensbergen switch (type) { 10812bad8471SEric Van Hensbergen case 'c': 10822bad8471SEric Van Hensbergen inode->i_mode &= ~S_IFBLK; 10832bad8471SEric Van Hensbergen inode->i_mode |= S_IFCHR; 10842bad8471SEric Van Hensbergen break; 10852bad8471SEric Van Hensbergen case 'b': 10862bad8471SEric Van Hensbergen break; 10872bad8471SEric Van Hensbergen default: 1088bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_ERROR, 108951a87c55SEric Van Hensbergen "Unknown special type %c %s\n", type, 109051a87c55SEric Van Hensbergen stat->extension); 10912bad8471SEric Van Hensbergen }; 10922bad8471SEric Van Hensbergen inode->i_rdev = MKDEV(major, minor); 109357c7b4e6SMagnus Deininger init_special_inode(inode, inode->i_mode, inode->i_rdev); 10942bad8471SEric Van Hensbergen } else 10952bad8471SEric Van Hensbergen inode->i_rdev = 0; 10962bad8471SEric Van Hensbergen 10977549ae3eSAbhishek Kulkarni i_size_write(inode, stat->length); 10982bad8471SEric Van Hensbergen 1099bd238fb4SLatchesar Ionkov /* not real number of blocks, but 512 byte ones ... */ 11007549ae3eSAbhishek Kulkarni inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9; 1101b3cbea03SAneesh Kumar K.V v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR; 11022bad8471SEric Van Hensbergen } 11032bad8471SEric Van Hensbergen 11042bad8471SEric Van Hensbergen /** 11052bad8471SEric Van Hensbergen * v9fs_qid2ino - convert qid into inode number 11062bad8471SEric Van Hensbergen * @qid: qid to hash 11072bad8471SEric Van Hensbergen * 11082bad8471SEric Van Hensbergen * BUG: potential for inode number collisions? 11092bad8471SEric Van Hensbergen */ 11102bad8471SEric Van Hensbergen 1111bd238fb4SLatchesar Ionkov ino_t v9fs_qid2ino(struct p9_qid *qid) 11122bad8471SEric Van Hensbergen { 11132bad8471SEric Van Hensbergen u64 path = qid->path + 2; 11142bad8471SEric Van Hensbergen ino_t i = 0; 11152bad8471SEric Van Hensbergen 11162bad8471SEric Van Hensbergen if (sizeof(ino_t) == sizeof(path)) 11172bad8471SEric Van Hensbergen memcpy(&i, &path, sizeof(ino_t)); 11182bad8471SEric Van Hensbergen else 11192bad8471SEric Van Hensbergen i = (ino_t) (path ^ (path >> 32)); 11202bad8471SEric Van Hensbergen 11212bad8471SEric Van Hensbergen return i; 11222bad8471SEric Van Hensbergen } 11232bad8471SEric Van Hensbergen 11242bad8471SEric Van Hensbergen /** 11252bad8471SEric Van Hensbergen * v9fs_readlink - read a symlink's location (internal version) 11262bad8471SEric Van Hensbergen * @dentry: dentry for symlink 112773c592b9SEric Van Hensbergen * @buffer: buffer to load symlink location into 11282bad8471SEric Van Hensbergen * @buflen: length of buffer 11292bad8471SEric Van Hensbergen * 11302bad8471SEric Van Hensbergen */ 11312bad8471SEric Van Hensbergen 11322bad8471SEric Van Hensbergen static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen) 11332bad8471SEric Van Hensbergen { 1134bd238fb4SLatchesar Ionkov int retval; 11352bad8471SEric Van Hensbergen 1136bd238fb4SLatchesar Ionkov struct v9fs_session_info *v9ses; 1137bd238fb4SLatchesar Ionkov struct p9_fid *fid; 113851a87c55SEric Van Hensbergen struct p9_wstat *st; 11392bad8471SEric Van Hensbergen 1140bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, " %s\n", dentry->d_name.name); 1141bd238fb4SLatchesar Ionkov retval = -EPERM; 114242869c8aSAneesh Kumar K.V v9ses = v9fs_dentry2v9ses(dentry); 1143bd238fb4SLatchesar Ionkov fid = v9fs_fid_lookup(dentry); 1144da977b2cSEric Van Hensbergen if (IS_ERR(fid)) 1145da977b2cSEric Van Hensbergen return PTR_ERR(fid); 11462bad8471SEric Van Hensbergen 1147329176ccSM. Mohan Kumar if (!v9fs_proto_dotu(v9ses)) 1148bd238fb4SLatchesar Ionkov return -EBADF; 11492bad8471SEric Van Hensbergen 1150bd238fb4SLatchesar Ionkov st = p9_client_stat(fid); 1151bd238fb4SLatchesar Ionkov if (IS_ERR(st)) 1152bd238fb4SLatchesar Ionkov return PTR_ERR(st); 11532bad8471SEric Van Hensbergen 1154bd238fb4SLatchesar Ionkov if (!(st->mode & P9_DMSYMLINK)) { 11552bad8471SEric Van Hensbergen retval = -EINVAL; 1156bd238fb4SLatchesar Ionkov goto done; 11572bad8471SEric Van Hensbergen } 11582bad8471SEric Van Hensbergen 11592bad8471SEric Van Hensbergen /* copy extension buffer into buffer */ 116051a87c55SEric Van Hensbergen strncpy(buffer, st->extension, buflen); 11612bad8471SEric Van Hensbergen 1162bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, 116351a87c55SEric Van Hensbergen "%s -> %s (%s)\n", dentry->d_name.name, st->extension, buffer); 1164bd238fb4SLatchesar Ionkov 11652511cd0bSMartin Stava retval = strnlen(buffer, buflen); 1166bd238fb4SLatchesar Ionkov done: 116762b2be59SLatchesar Ionkov p9stat_free(st); 1168bd238fb4SLatchesar Ionkov kfree(st); 11692bad8471SEric Van Hensbergen return retval; 11702bad8471SEric Van Hensbergen } 11712bad8471SEric Van Hensbergen 11722bad8471SEric Van Hensbergen /** 11732bad8471SEric Van Hensbergen * v9fs_vfs_follow_link - follow a symlink path 11742bad8471SEric Van Hensbergen * @dentry: dentry for symlink 11752bad8471SEric Van Hensbergen * @nd: nameidata 11762bad8471SEric Van Hensbergen * 11772bad8471SEric Van Hensbergen */ 11782bad8471SEric Van Hensbergen 11792bad8471SEric Van Hensbergen static void *v9fs_vfs_follow_link(struct dentry *dentry, struct nameidata *nd) 11802bad8471SEric Van Hensbergen { 11812bad8471SEric Van Hensbergen int len = 0; 11822bad8471SEric Van Hensbergen char *link = __getname(); 11832bad8471SEric Van Hensbergen 1184bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "%s n", dentry->d_name.name); 11852bad8471SEric Van Hensbergen 11862bad8471SEric Van Hensbergen if (!link) 11872bad8471SEric Van Hensbergen link = ERR_PTR(-ENOMEM); 11882bad8471SEric Van Hensbergen else { 118916cce6d2SLatchesar Ionkov len = v9fs_readlink(dentry, link, PATH_MAX); 11902bad8471SEric Van Hensbergen 11912bad8471SEric Van Hensbergen if (len < 0) { 1192ce44eeb6SDavi Arnaut __putname(link); 11932bad8471SEric Van Hensbergen link = ERR_PTR(len); 11942bad8471SEric Van Hensbergen } else 11952511cd0bSMartin Stava link[min(len, PATH_MAX-1)] = 0; 11962bad8471SEric Van Hensbergen } 11972bad8471SEric Van Hensbergen nd_set_link(nd, link); 11982bad8471SEric Van Hensbergen 11992bad8471SEric Van Hensbergen return NULL; 12002bad8471SEric Van Hensbergen } 12012bad8471SEric Van Hensbergen 12022bad8471SEric Van Hensbergen /** 12032bad8471SEric Van Hensbergen * v9fs_vfs_put_link - release a symlink path 12042bad8471SEric Van Hensbergen * @dentry: dentry for symlink 12052bad8471SEric Van Hensbergen * @nd: nameidata 1206ee443996SEric Van Hensbergen * @p: unused 12072bad8471SEric Van Hensbergen * 12082bad8471SEric Van Hensbergen */ 12092bad8471SEric Van Hensbergen 121053c06f4eSAneesh Kumar K.V void 1211ee443996SEric Van Hensbergen v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) 12122bad8471SEric Van Hensbergen { 12132bad8471SEric Van Hensbergen char *s = nd_get_link(nd); 12142bad8471SEric Van Hensbergen 12156ff23207SDuane Griffin P9_DPRINTK(P9_DEBUG_VFS, " %s %s\n", dentry->d_name.name, 12166ff23207SDuane Griffin IS_ERR(s) ? "<error>" : s); 12172bad8471SEric Van Hensbergen if (!IS_ERR(s)) 1218ce44eeb6SDavi Arnaut __putname(s); 12192bad8471SEric Van Hensbergen } 12202bad8471SEric Van Hensbergen 1221ee443996SEric Van Hensbergen /** 1222ee443996SEric Van Hensbergen * v9fs_vfs_mkspecial - create a special file 1223ee443996SEric Van Hensbergen * @dir: inode to create special file in 1224ee443996SEric Van Hensbergen * @dentry: dentry to create 1225ee443996SEric Van Hensbergen * @mode: mode to create special file 1226ee443996SEric Van Hensbergen * @extension: 9p2000.u format extension string representing special file 1227ee443996SEric Van Hensbergen * 1228ee443996SEric Van Hensbergen */ 1229ee443996SEric Van Hensbergen 1230531b1094SLatchesar Ionkov static int v9fs_vfs_mkspecial(struct inode *dir, struct dentry *dentry, 1231531b1094SLatchesar Ionkov int mode, const char *extension) 1232531b1094SLatchesar Ionkov { 1233bd238fb4SLatchesar Ionkov u32 perm; 1234bd238fb4SLatchesar Ionkov struct p9_fid *fid; 1235d28c61f0SAneesh Kumar K.V struct v9fs_session_info *v9ses; 1236531b1094SLatchesar Ionkov 12376a3124a3SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dir); 1238dd6102fbSSripathi Kodi if (!v9fs_proto_dotu(v9ses)) { 1239bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_ERROR, "not extended\n"); 12406a3124a3SLatchesar Ionkov return -EPERM; 1241531b1094SLatchesar Ionkov } 1242531b1094SLatchesar Ionkov 1243da977b2cSEric Van Hensbergen perm = unixmode2p9mode(v9ses, mode); 1244bd238fb4SLatchesar Ionkov fid = v9fs_create(v9ses, dir, dentry, (char *) extension, perm, 1245bd238fb4SLatchesar Ionkov P9_OREAD); 1246bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) 1247bd238fb4SLatchesar Ionkov return PTR_ERR(fid); 1248da977b2cSEric Van Hensbergen 1249d28c61f0SAneesh Kumar K.V v9fs_invalidate_inode_attr(dir); 1250bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 12516a3124a3SLatchesar Ionkov return 0; 1252531b1094SLatchesar Ionkov } 1253531b1094SLatchesar Ionkov 1254531b1094SLatchesar Ionkov /** 1255531b1094SLatchesar Ionkov * v9fs_vfs_symlink - helper function to create symlinks 1256531b1094SLatchesar Ionkov * @dir: directory inode containing symlink 1257531b1094SLatchesar Ionkov * @dentry: dentry for symlink 1258531b1094SLatchesar Ionkov * @symname: symlink data 1259531b1094SLatchesar Ionkov * 1260ee443996SEric Van Hensbergen * See Also: 9P2000.u RFC for more information 1261531b1094SLatchesar Ionkov * 1262531b1094SLatchesar Ionkov */ 1263531b1094SLatchesar Ionkov 1264531b1094SLatchesar Ionkov static int 1265531b1094SLatchesar Ionkov v9fs_vfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) 1266531b1094SLatchesar Ionkov { 1267bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, " %lu,%s,%s\n", dir->i_ino, 1268bd238fb4SLatchesar Ionkov dentry->d_name.name, symname); 1269531b1094SLatchesar Ionkov 1270531b1094SLatchesar Ionkov return v9fs_vfs_mkspecial(dir, dentry, S_IFLNK, symname); 1271531b1094SLatchesar Ionkov } 1272531b1094SLatchesar Ionkov 12732bad8471SEric Van Hensbergen /** 12742bad8471SEric Van Hensbergen * v9fs_vfs_link - create a hardlink 12752bad8471SEric Van Hensbergen * @old_dentry: dentry for file to link to 12762bad8471SEric Van Hensbergen * @dir: inode destination for new link 127773c592b9SEric Van Hensbergen * @dentry: dentry for link 12782bad8471SEric Van Hensbergen * 12792bad8471SEric Van Hensbergen */ 12802bad8471SEric Van Hensbergen 12812bad8471SEric Van Hensbergen static int 12822bad8471SEric Van Hensbergen v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir, 12832bad8471SEric Van Hensbergen struct dentry *dentry) 12842bad8471SEric Van Hensbergen { 1285531b1094SLatchesar Ionkov int retval; 1286531b1094SLatchesar Ionkov char *name; 1287d28c61f0SAneesh Kumar K.V struct p9_fid *oldfid; 12882bad8471SEric Van Hensbergen 1289bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, 1290bd238fb4SLatchesar Ionkov " %lu,%s,%s\n", dir->i_ino, dentry->d_name.name, 12912bad8471SEric Van Hensbergen old_dentry->d_name.name); 12922bad8471SEric Van Hensbergen 1293da977b2cSEric Van Hensbergen oldfid = v9fs_fid_clone(old_dentry); 1294da977b2cSEric Van Hensbergen if (IS_ERR(oldfid)) 1295da977b2cSEric Van Hensbergen return PTR_ERR(oldfid); 12962bad8471SEric Van Hensbergen 1297531b1094SLatchesar Ionkov name = __getname(); 1298da977b2cSEric Van Hensbergen if (unlikely(!name)) { 1299da977b2cSEric Van Hensbergen retval = -ENOMEM; 1300da977b2cSEric Van Hensbergen goto clunk_fid; 1301da977b2cSEric Van Hensbergen } 13020710d36aSFlorin Malita 130316cce6d2SLatchesar Ionkov sprintf(name, "%d\n", oldfid->fid); 1304bd238fb4SLatchesar Ionkov retval = v9fs_vfs_mkspecial(dir, dentry, P9_DMLINK, name); 1305531b1094SLatchesar Ionkov __putname(name); 1306c06c066aSAneesh Kumar K.V if (!retval) { 1307c06c066aSAneesh Kumar K.V v9fs_refresh_inode(oldfid, old_dentry->d_inode); 1308d28c61f0SAneesh Kumar K.V v9fs_invalidate_inode_attr(dir); 1309c06c066aSAneesh Kumar K.V } 1310da977b2cSEric Van Hensbergen clunk_fid: 1311bd238fb4SLatchesar Ionkov p9_client_clunk(oldfid); 13122bad8471SEric Van Hensbergen return retval; 13132bad8471SEric Van Hensbergen } 13142bad8471SEric Van Hensbergen 13152bad8471SEric Van Hensbergen /** 13162bad8471SEric Van Hensbergen * v9fs_vfs_mknod - create a special file 13172bad8471SEric Van Hensbergen * @dir: inode destination for new link 13182bad8471SEric Van Hensbergen * @dentry: dentry for file 13192bad8471SEric Van Hensbergen * @mode: mode for creation 1320ee443996SEric Van Hensbergen * @rdev: device associated with special file 13212bad8471SEric Van Hensbergen * 13222bad8471SEric Van Hensbergen */ 13232bad8471SEric Van Hensbergen 13242bad8471SEric Van Hensbergen static int 13252bad8471SEric Van Hensbergen v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) 13262bad8471SEric Van Hensbergen { 1327531b1094SLatchesar Ionkov int retval; 1328531b1094SLatchesar Ionkov char *name; 13292bad8471SEric Van Hensbergen 1330bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, 1331bd238fb4SLatchesar Ionkov " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino, 13322bad8471SEric Van Hensbergen dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev)); 13332bad8471SEric Van Hensbergen 1334531b1094SLatchesar Ionkov if (!new_valid_dev(rdev)) 1335531b1094SLatchesar Ionkov return -EINVAL; 133673c592b9SEric Van Hensbergen 1337531b1094SLatchesar Ionkov name = __getname(); 1338c0291a05SEugene Teo if (!name) 1339c0291a05SEugene Teo return -ENOMEM; 13402bad8471SEric Van Hensbergen /* build extension */ 13412bad8471SEric Van Hensbergen if (S_ISBLK(mode)) 1342531b1094SLatchesar Ionkov sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev)); 13432bad8471SEric Van Hensbergen else if (S_ISCHR(mode)) 1344531b1094SLatchesar Ionkov sprintf(name, "c %u %u", MAJOR(rdev), MINOR(rdev)); 134573c592b9SEric Van Hensbergen else if (S_ISFIFO(mode)) 1346531b1094SLatchesar Ionkov *name = 0; 134775cc5c9bSVenkateswararao Jujjuri else if (S_ISSOCK(mode)) 134875cc5c9bSVenkateswararao Jujjuri *name = 0; 13492bad8471SEric Van Hensbergen else { 1350531b1094SLatchesar Ionkov __putname(name); 1351531b1094SLatchesar Ionkov return -EINVAL; 13522bad8471SEric Van Hensbergen } 13532bad8471SEric Van Hensbergen 1354531b1094SLatchesar Ionkov retval = v9fs_vfs_mkspecial(dir, dentry, mode, name); 1355531b1094SLatchesar Ionkov __putname(name); 13562bad8471SEric Van Hensbergen 13572bad8471SEric Van Hensbergen return retval; 13582bad8471SEric Van Hensbergen } 13592bad8471SEric Van Hensbergen 1360b3cbea03SAneesh Kumar K.V int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode) 1361b3cbea03SAneesh Kumar K.V { 1362b3cbea03SAneesh Kumar K.V loff_t i_size; 1363b3cbea03SAneesh Kumar K.V struct p9_wstat *st; 1364b3cbea03SAneesh Kumar K.V struct v9fs_session_info *v9ses; 1365b3cbea03SAneesh Kumar K.V 1366b3cbea03SAneesh Kumar K.V v9ses = v9fs_inode2v9ses(inode); 1367b3cbea03SAneesh Kumar K.V st = p9_client_stat(fid); 1368b3cbea03SAneesh Kumar K.V if (IS_ERR(st)) 1369b3cbea03SAneesh Kumar K.V return PTR_ERR(st); 1370b3cbea03SAneesh Kumar K.V 1371b3cbea03SAneesh Kumar K.V spin_lock(&inode->i_lock); 1372b3cbea03SAneesh Kumar K.V /* 1373b3cbea03SAneesh Kumar K.V * We don't want to refresh inode->i_size, 1374b3cbea03SAneesh Kumar K.V * because we may have cached data 1375b3cbea03SAneesh Kumar K.V */ 1376b3cbea03SAneesh Kumar K.V i_size = inode->i_size; 1377b3cbea03SAneesh Kumar K.V v9fs_stat2inode(st, inode, inode->i_sb); 1378b3cbea03SAneesh Kumar K.V if (v9ses->cache) 1379b3cbea03SAneesh Kumar K.V inode->i_size = i_size; 1380b3cbea03SAneesh Kumar K.V spin_unlock(&inode->i_lock); 1381b3cbea03SAneesh Kumar K.V p9stat_free(st); 1382b3cbea03SAneesh Kumar K.V kfree(st); 1383b3cbea03SAneesh Kumar K.V return 0; 1384b3cbea03SAneesh Kumar K.V } 1385b3cbea03SAneesh Kumar K.V 13869b6533c9SSripathi Kodi static const struct inode_operations v9fs_dir_inode_operations_dotu = { 13879b6533c9SSripathi Kodi .create = v9fs_vfs_create, 13889b6533c9SSripathi Kodi .lookup = v9fs_vfs_lookup, 13899b6533c9SSripathi Kodi .symlink = v9fs_vfs_symlink, 139050cc42ffSVenkateswararao Jujjuri (JV) .link = v9fs_vfs_link, 13919b6533c9SSripathi Kodi .unlink = v9fs_vfs_unlink, 13929b6533c9SSripathi Kodi .mkdir = v9fs_vfs_mkdir, 13939b6533c9SSripathi Kodi .rmdir = v9fs_vfs_rmdir, 13941d76e313SAneesh Kumar K.V .mknod = v9fs_vfs_mknod, 13959b6533c9SSripathi Kodi .rename = v9fs_vfs_rename, 13969b6533c9SSripathi Kodi .getattr = v9fs_vfs_getattr, 13979b6533c9SSripathi Kodi .setattr = v9fs_vfs_setattr, 13989b6533c9SSripathi Kodi }; 13999b6533c9SSripathi Kodi 1400754661f1SArjan van de Ven static const struct inode_operations v9fs_dir_inode_operations = { 1401b501611aSEric Van Hensbergen .create = v9fs_vfs_create, 1402b501611aSEric Van Hensbergen .lookup = v9fs_vfs_lookup, 1403b501611aSEric Van Hensbergen .unlink = v9fs_vfs_unlink, 1404b501611aSEric Van Hensbergen .mkdir = v9fs_vfs_mkdir, 1405b501611aSEric Van Hensbergen .rmdir = v9fs_vfs_rmdir, 1406b501611aSEric Van Hensbergen .mknod = v9fs_vfs_mknod, 1407b501611aSEric Van Hensbergen .rename = v9fs_vfs_rename, 1408b501611aSEric Van Hensbergen .getattr = v9fs_vfs_getattr, 1409b501611aSEric Van Hensbergen .setattr = v9fs_vfs_setattr, 1410b501611aSEric Van Hensbergen }; 1411b501611aSEric Van Hensbergen 1412754661f1SArjan van de Ven static const struct inode_operations v9fs_file_inode_operations = { 14132bad8471SEric Van Hensbergen .getattr = v9fs_vfs_getattr, 14142bad8471SEric Van Hensbergen .setattr = v9fs_vfs_setattr, 14152bad8471SEric Van Hensbergen }; 14162bad8471SEric Van Hensbergen 1417754661f1SArjan van de Ven static const struct inode_operations v9fs_symlink_inode_operations = { 1418204f2f0eSAl Viro .readlink = generic_readlink, 14192bad8471SEric Van Hensbergen .follow_link = v9fs_vfs_follow_link, 14202bad8471SEric Van Hensbergen .put_link = v9fs_vfs_put_link, 14212bad8471SEric Van Hensbergen .getattr = v9fs_vfs_getattr, 14222bad8471SEric Van Hensbergen .setattr = v9fs_vfs_setattr, 14232bad8471SEric Van Hensbergen }; 14249b6533c9SSripathi Kodi 1425