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> 38bd238fb4SLatchesar Ionkov #include <net/9p/9p.h> 39bd238fb4SLatchesar Ionkov #include <net/9p/client.h> 402bad8471SEric Van Hensbergen 412bad8471SEric Van Hensbergen #include "v9fs.h" 422bad8471SEric Van Hensbergen #include "v9fs_vfs.h" 432bad8471SEric Van Hensbergen #include "fid.h" 4460e78d2cSAbhishek Kulkarni #include "cache.h" 452bad8471SEric Van Hensbergen 46754661f1SArjan van de Ven static const struct inode_operations v9fs_dir_inode_operations; 479b6533c9SSripathi Kodi static const struct inode_operations v9fs_dir_inode_operations_dotu; 489b6533c9SSripathi Kodi static const struct inode_operations v9fs_dir_inode_operations_dotl; 49754661f1SArjan van de Ven static const struct inode_operations v9fs_file_inode_operations; 509b6533c9SSripathi Kodi static const struct inode_operations v9fs_file_inode_operations_dotl; 51754661f1SArjan van de Ven static const struct inode_operations v9fs_symlink_inode_operations; 529b6533c9SSripathi Kodi static const struct inode_operations v9fs_symlink_inode_operations_dotl; 532bad8471SEric Van Hensbergen 542bad8471SEric Van Hensbergen /** 552bad8471SEric Van Hensbergen * unixmode2p9mode - convert unix mode bits to plan 9 562bad8471SEric Van Hensbergen * @v9ses: v9fs session information 572bad8471SEric Van Hensbergen * @mode: mode to convert 582bad8471SEric Van Hensbergen * 592bad8471SEric Van Hensbergen */ 602bad8471SEric Van Hensbergen 6173c592b9SEric Van Hensbergen static int unixmode2p9mode(struct v9fs_session_info *v9ses, int mode) 622bad8471SEric Van Hensbergen { 632bad8471SEric Van Hensbergen int res; 642bad8471SEric Van Hensbergen res = mode & 0777; 652bad8471SEric Van Hensbergen if (S_ISDIR(mode)) 66bd238fb4SLatchesar Ionkov res |= P9_DMDIR; 67dd6102fbSSripathi Kodi if (v9fs_proto_dotu(v9ses)) { 682bad8471SEric Van Hensbergen if (S_ISLNK(mode)) 69bd238fb4SLatchesar Ionkov res |= P9_DMSYMLINK; 702bad8471SEric Van Hensbergen if (v9ses->nodev == 0) { 712bad8471SEric Van Hensbergen if (S_ISSOCK(mode)) 72bd238fb4SLatchesar Ionkov res |= P9_DMSOCKET; 732bad8471SEric Van Hensbergen if (S_ISFIFO(mode)) 74bd238fb4SLatchesar Ionkov res |= P9_DMNAMEDPIPE; 752bad8471SEric Van Hensbergen if (S_ISBLK(mode)) 76bd238fb4SLatchesar Ionkov res |= P9_DMDEVICE; 772bad8471SEric Van Hensbergen if (S_ISCHR(mode)) 78bd238fb4SLatchesar Ionkov res |= P9_DMDEVICE; 792bad8471SEric Van Hensbergen } 802bad8471SEric Van Hensbergen 812bad8471SEric Van Hensbergen if ((mode & S_ISUID) == S_ISUID) 82bd238fb4SLatchesar Ionkov res |= P9_DMSETUID; 832bad8471SEric Van Hensbergen if ((mode & S_ISGID) == S_ISGID) 84bd238fb4SLatchesar Ionkov res |= P9_DMSETGID; 85d199d652SAnthony Liguori if ((mode & S_ISVTX) == S_ISVTX) 86d199d652SAnthony Liguori res |= P9_DMSETVTX; 87bd238fb4SLatchesar Ionkov if ((mode & P9_DMLINK)) 88bd238fb4SLatchesar Ionkov res |= P9_DMLINK; 892bad8471SEric Van Hensbergen } 902bad8471SEric Van Hensbergen 912bad8471SEric Van Hensbergen return res; 922bad8471SEric Van Hensbergen } 932bad8471SEric Van Hensbergen 942bad8471SEric Van Hensbergen /** 952bad8471SEric Van Hensbergen * p9mode2unixmode- convert plan9 mode bits to unix mode bits 962bad8471SEric Van Hensbergen * @v9ses: v9fs session information 972bad8471SEric Van Hensbergen * @mode: mode to convert 982bad8471SEric Van Hensbergen * 992bad8471SEric Van Hensbergen */ 1002bad8471SEric Van Hensbergen 10173c592b9SEric Van Hensbergen static int p9mode2unixmode(struct v9fs_session_info *v9ses, int mode) 1022bad8471SEric Van Hensbergen { 1032bad8471SEric Van Hensbergen int res; 1042bad8471SEric Van Hensbergen 1052bad8471SEric Van Hensbergen res = mode & 0777; 1062bad8471SEric Van Hensbergen 107bd238fb4SLatchesar Ionkov if ((mode & P9_DMDIR) == P9_DMDIR) 1082bad8471SEric Van Hensbergen res |= S_IFDIR; 109dd6102fbSSripathi Kodi else if ((mode & P9_DMSYMLINK) && (v9fs_proto_dotu(v9ses))) 1102bad8471SEric Van Hensbergen res |= S_IFLNK; 111dd6102fbSSripathi Kodi else if ((mode & P9_DMSOCKET) && (v9fs_proto_dotu(v9ses)) 1122bad8471SEric Van Hensbergen && (v9ses->nodev == 0)) 1132bad8471SEric Van Hensbergen res |= S_IFSOCK; 114dd6102fbSSripathi Kodi else if ((mode & P9_DMNAMEDPIPE) && (v9fs_proto_dotu(v9ses)) 1152bad8471SEric Van Hensbergen && (v9ses->nodev == 0)) 1162bad8471SEric Van Hensbergen res |= S_IFIFO; 117dd6102fbSSripathi Kodi else if ((mode & P9_DMDEVICE) && (v9fs_proto_dotu(v9ses)) 1182bad8471SEric Van Hensbergen && (v9ses->nodev == 0)) 1192bad8471SEric Van Hensbergen res |= S_IFBLK; 1202bad8471SEric Van Hensbergen else 1212bad8471SEric Van Hensbergen res |= S_IFREG; 1222bad8471SEric Van Hensbergen 123dd6102fbSSripathi Kodi if (v9fs_proto_dotu(v9ses)) { 124bd238fb4SLatchesar Ionkov if ((mode & P9_DMSETUID) == P9_DMSETUID) 1252bad8471SEric Van Hensbergen res |= S_ISUID; 1262bad8471SEric Van Hensbergen 127bd238fb4SLatchesar Ionkov if ((mode & P9_DMSETGID) == P9_DMSETGID) 1282bad8471SEric Van Hensbergen res |= S_ISGID; 129d199d652SAnthony Liguori 130d199d652SAnthony Liguori if ((mode & P9_DMSETVTX) == P9_DMSETVTX) 131d199d652SAnthony Liguori res |= S_ISVTX; 1322bad8471SEric Van Hensbergen } 1332bad8471SEric Van Hensbergen 1342bad8471SEric Van Hensbergen return res; 1352bad8471SEric Van Hensbergen } 1362bad8471SEric Van Hensbergen 137ee443996SEric Van Hensbergen /** 138ee443996SEric Van Hensbergen * v9fs_uflags2omode- convert posix open flags to plan 9 mode bits 139ee443996SEric Van Hensbergen * @uflags: flags to convert 1402e4bef41SEric Van Hensbergen * @extended: if .u extensions are active 141ee443996SEric Van Hensbergen */ 142ee443996SEric Van Hensbergen 1432e4bef41SEric Van Hensbergen int v9fs_uflags2omode(int uflags, int extended) 1446a3124a3SLatchesar Ionkov { 1456a3124a3SLatchesar Ionkov int ret; 1466a3124a3SLatchesar Ionkov 1476a3124a3SLatchesar Ionkov ret = 0; 1486a3124a3SLatchesar Ionkov switch (uflags&3) { 1496a3124a3SLatchesar Ionkov default: 1506a3124a3SLatchesar Ionkov case O_RDONLY: 151bd238fb4SLatchesar Ionkov ret = P9_OREAD; 1526a3124a3SLatchesar Ionkov break; 1536a3124a3SLatchesar Ionkov 1546a3124a3SLatchesar Ionkov case O_WRONLY: 155bd238fb4SLatchesar Ionkov ret = P9_OWRITE; 1566a3124a3SLatchesar Ionkov break; 1576a3124a3SLatchesar Ionkov 1586a3124a3SLatchesar Ionkov case O_RDWR: 159bd238fb4SLatchesar Ionkov ret = P9_ORDWR; 1606a3124a3SLatchesar Ionkov break; 1616a3124a3SLatchesar Ionkov } 1626a3124a3SLatchesar Ionkov 1636a3124a3SLatchesar Ionkov if (uflags & O_TRUNC) 164bd238fb4SLatchesar Ionkov ret |= P9_OTRUNC; 1656a3124a3SLatchesar Ionkov 1662e4bef41SEric Van Hensbergen if (extended) { 1672e4bef41SEric Van Hensbergen if (uflags & O_EXCL) 1682e4bef41SEric Van Hensbergen ret |= P9_OEXCL; 1692e4bef41SEric Van Hensbergen 1706a3124a3SLatchesar Ionkov if (uflags & O_APPEND) 171bd238fb4SLatchesar Ionkov ret |= P9_OAPPEND; 1722e4bef41SEric Van Hensbergen } 1736a3124a3SLatchesar Ionkov 1746a3124a3SLatchesar Ionkov return ret; 1756a3124a3SLatchesar Ionkov } 1766a3124a3SLatchesar Ionkov 1772bad8471SEric Van Hensbergen /** 178531b1094SLatchesar Ionkov * v9fs_blank_wstat - helper function to setup a 9P stat structure 179531b1094SLatchesar Ionkov * @wstat: structure to initialize 1802bad8471SEric Van Hensbergen * 1812bad8471SEric Van Hensbergen */ 1822bad8471SEric Van Hensbergen 1837a4439c4SM. Mohan Kumar void 184bd238fb4SLatchesar Ionkov v9fs_blank_wstat(struct p9_wstat *wstat) 1852bad8471SEric Van Hensbergen { 186531b1094SLatchesar Ionkov wstat->type = ~0; 187531b1094SLatchesar Ionkov wstat->dev = ~0; 188531b1094SLatchesar Ionkov wstat->qid.type = ~0; 189531b1094SLatchesar Ionkov wstat->qid.version = ~0; 190531b1094SLatchesar Ionkov *((long long *)&wstat->qid.path) = ~0; 191531b1094SLatchesar Ionkov wstat->mode = ~0; 192531b1094SLatchesar Ionkov wstat->atime = ~0; 193531b1094SLatchesar Ionkov wstat->mtime = ~0; 194531b1094SLatchesar Ionkov wstat->length = ~0; 195531b1094SLatchesar Ionkov wstat->name = NULL; 196531b1094SLatchesar Ionkov wstat->uid = NULL; 197531b1094SLatchesar Ionkov wstat->gid = NULL; 198531b1094SLatchesar Ionkov wstat->muid = NULL; 199531b1094SLatchesar Ionkov wstat->n_uid = ~0; 200531b1094SLatchesar Ionkov wstat->n_gid = ~0; 201531b1094SLatchesar Ionkov wstat->n_muid = ~0; 202531b1094SLatchesar Ionkov wstat->extension = NULL; 2032bad8471SEric Van Hensbergen } 2042bad8471SEric Van Hensbergen 20560e78d2cSAbhishek Kulkarni #ifdef CONFIG_9P_FSCACHE 20660e78d2cSAbhishek Kulkarni /** 20760e78d2cSAbhishek Kulkarni * v9fs_alloc_inode - helper function to allocate an inode 20860e78d2cSAbhishek Kulkarni * This callback is executed before setting up the inode so that we 20960e78d2cSAbhishek Kulkarni * can associate a vcookie with each inode. 21060e78d2cSAbhishek Kulkarni * 21160e78d2cSAbhishek Kulkarni */ 21260e78d2cSAbhishek Kulkarni 21360e78d2cSAbhishek Kulkarni struct inode *v9fs_alloc_inode(struct super_block *sb) 21460e78d2cSAbhishek Kulkarni { 21560e78d2cSAbhishek Kulkarni struct v9fs_cookie *vcookie; 21660e78d2cSAbhishek Kulkarni vcookie = (struct v9fs_cookie *)kmem_cache_alloc(vcookie_cache, 21760e78d2cSAbhishek Kulkarni GFP_KERNEL); 21860e78d2cSAbhishek Kulkarni if (!vcookie) 21960e78d2cSAbhishek Kulkarni return NULL; 22060e78d2cSAbhishek Kulkarni 22160e78d2cSAbhishek Kulkarni vcookie->fscache = NULL; 22260e78d2cSAbhishek Kulkarni vcookie->qid = NULL; 22360e78d2cSAbhishek Kulkarni spin_lock_init(&vcookie->lock); 22460e78d2cSAbhishek Kulkarni return &vcookie->inode; 22560e78d2cSAbhishek Kulkarni } 22660e78d2cSAbhishek Kulkarni 22760e78d2cSAbhishek Kulkarni /** 22860e78d2cSAbhishek Kulkarni * v9fs_destroy_inode - destroy an inode 22960e78d2cSAbhishek Kulkarni * 23060e78d2cSAbhishek Kulkarni */ 23160e78d2cSAbhishek Kulkarni 23260e78d2cSAbhishek Kulkarni void v9fs_destroy_inode(struct inode *inode) 23360e78d2cSAbhishek Kulkarni { 23460e78d2cSAbhishek Kulkarni kmem_cache_free(vcookie_cache, v9fs_inode2cookie(inode)); 23560e78d2cSAbhishek Kulkarni } 23660e78d2cSAbhishek Kulkarni #endif 23760e78d2cSAbhishek Kulkarni 2382bad8471SEric Van Hensbergen /** 23909d34ee5SEric Van Hensbergen * v9fs_get_fsgid_for_create - Helper function to get the gid for creating a 24009d34ee5SEric Van Hensbergen * new file system object. This checks the S_ISGID to determine the owning 24109d34ee5SEric Van Hensbergen * group of the new file system object. 24209d34ee5SEric Van Hensbergen */ 24309d34ee5SEric Van Hensbergen 24409d34ee5SEric Van Hensbergen static gid_t v9fs_get_fsgid_for_create(struct inode *dir_inode) 24509d34ee5SEric Van Hensbergen { 24609d34ee5SEric Van Hensbergen BUG_ON(dir_inode == NULL); 24709d34ee5SEric Van Hensbergen 24809d34ee5SEric Van Hensbergen if (dir_inode->i_mode & S_ISGID) { 24909d34ee5SEric Van Hensbergen /* set_gid bit is set.*/ 25009d34ee5SEric Van Hensbergen return dir_inode->i_gid; 25109d34ee5SEric Van Hensbergen } 25209d34ee5SEric Van Hensbergen return current_fsgid(); 25309d34ee5SEric Van Hensbergen } 25409d34ee5SEric Van Hensbergen 25509d34ee5SEric Van Hensbergen /** 25609d34ee5SEric Van Hensbergen * v9fs_dentry_from_dir_inode - helper function to get the dentry from 25709d34ee5SEric Van Hensbergen * dir inode. 25809d34ee5SEric Van Hensbergen * 25909d34ee5SEric Van Hensbergen */ 26009d34ee5SEric Van Hensbergen 26109d34ee5SEric Van Hensbergen struct dentry *v9fs_dentry_from_dir_inode(struct inode *inode) 26209d34ee5SEric Van Hensbergen { 26309d34ee5SEric Van Hensbergen struct dentry *dentry; 26409d34ee5SEric Van Hensbergen 26509d34ee5SEric Van Hensbergen spin_lock(&dcache_lock); 26609d34ee5SEric Van Hensbergen /* Directory should have only one entry. */ 26709d34ee5SEric Van Hensbergen BUG_ON(S_ISDIR(inode->i_mode) && !list_is_singular(&inode->i_dentry)); 26809d34ee5SEric Van Hensbergen dentry = list_entry(inode->i_dentry.next, struct dentry, d_alias); 26909d34ee5SEric Van Hensbergen spin_unlock(&dcache_lock); 27009d34ee5SEric Van Hensbergen return dentry; 27109d34ee5SEric Van Hensbergen } 27209d34ee5SEric Van Hensbergen 27309d34ee5SEric Van Hensbergen /** 2742bad8471SEric Van Hensbergen * v9fs_get_inode - helper function to setup an inode 2752bad8471SEric Van Hensbergen * @sb: superblock 2762bad8471SEric Van Hensbergen * @mode: mode to setup inode with 2772bad8471SEric Van Hensbergen * 2782bad8471SEric Van Hensbergen */ 2792bad8471SEric Van Hensbergen 2802bad8471SEric Van Hensbergen struct inode *v9fs_get_inode(struct super_block *sb, int mode) 2812bad8471SEric Van Hensbergen { 2822bb54115SAbhishek Kulkarni int err; 2836a3124a3SLatchesar Ionkov struct inode *inode; 284b501611aSEric Van Hensbergen struct v9fs_session_info *v9ses = sb->s_fs_info; 2852bad8471SEric Van Hensbergen 286bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "super block: %p mode: %o\n", sb, mode); 2872bad8471SEric Van Hensbergen 2882bad8471SEric Van Hensbergen inode = new_inode(sb); 2892bb54115SAbhishek Kulkarni if (!inode) { 2902bb54115SAbhishek Kulkarni P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n"); 29148559b4cSAbhishek Kulkarni return ERR_PTR(-ENOMEM); 2922bb54115SAbhishek Kulkarni } 2932bb54115SAbhishek Kulkarni 294217f206dSDmitry Monakhov inode_init_owner(inode, NULL, mode); 2952bad8471SEric Van Hensbergen inode->i_blocks = 0; 2962bad8471SEric Van Hensbergen inode->i_rdev = 0; 2972bad8471SEric Van Hensbergen inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; 298147b31cfSEric Van Hensbergen inode->i_mapping->a_ops = &v9fs_addr_operations; 2992bad8471SEric Van Hensbergen 3002bad8471SEric Van Hensbergen switch (mode & S_IFMT) { 3012bad8471SEric Van Hensbergen case S_IFIFO: 3022bad8471SEric Van Hensbergen case S_IFBLK: 3032bad8471SEric Van Hensbergen case S_IFCHR: 3042bad8471SEric Van Hensbergen case S_IFSOCK: 3054b43516aSM. Mohan Kumar if (v9fs_proto_dotl(v9ses)) { 3064b43516aSM. Mohan Kumar inode->i_op = &v9fs_file_inode_operations_dotl; 3074b43516aSM. Mohan Kumar inode->i_fop = &v9fs_file_operations_dotl; 3084b43516aSM. Mohan Kumar } else if (v9fs_proto_dotu(v9ses)) { 3094b43516aSM. Mohan Kumar inode->i_op = &v9fs_file_inode_operations; 3104b43516aSM. Mohan Kumar inode->i_fop = &v9fs_file_operations; 3114b43516aSM. Mohan Kumar } else { 312bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_ERROR, 313bd238fb4SLatchesar Ionkov "special files without extended mode\n"); 3142bb54115SAbhishek Kulkarni err = -EINVAL; 3152bb54115SAbhishek Kulkarni goto error; 316b501611aSEric Van Hensbergen } 3172bb54115SAbhishek Kulkarni init_special_inode(inode, inode->i_mode, inode->i_rdev); 3185d58bec5SEric Van Hensbergen break; 3192bad8471SEric Van Hensbergen case S_IFREG: 3209b6533c9SSripathi Kodi if (v9fs_proto_dotl(v9ses)) { 3219b6533c9SSripathi Kodi inode->i_op = &v9fs_file_inode_operations_dotl; 3229b6533c9SSripathi Kodi inode->i_fop = &v9fs_file_operations_dotl; 3239b6533c9SSripathi Kodi } else { 3242bad8471SEric Van Hensbergen inode->i_op = &v9fs_file_inode_operations; 3252bad8471SEric Van Hensbergen inode->i_fop = &v9fs_file_operations; 3269b6533c9SSripathi Kodi } 3279b6533c9SSripathi Kodi 3282bad8471SEric Van Hensbergen break; 3299b6533c9SSripathi Kodi 330b501611aSEric Van Hensbergen case S_IFLNK: 3319b6533c9SSripathi Kodi if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) { 3329b6533c9SSripathi Kodi P9_DPRINTK(P9_DEBUG_ERROR, "extended modes used with " 3339b6533c9SSripathi Kodi "legacy protocol.\n"); 3342bb54115SAbhishek Kulkarni err = -EINVAL; 3352bb54115SAbhishek Kulkarni goto error; 336b501611aSEric Van Hensbergen } 3379b6533c9SSripathi Kodi 3389b6533c9SSripathi Kodi if (v9fs_proto_dotl(v9ses)) 3399b6533c9SSripathi Kodi inode->i_op = &v9fs_symlink_inode_operations_dotl; 3409b6533c9SSripathi Kodi else 341b501611aSEric Van Hensbergen inode->i_op = &v9fs_symlink_inode_operations; 3429b6533c9SSripathi Kodi 343b501611aSEric Van Hensbergen break; 3442bad8471SEric Van Hensbergen case S_IFDIR: 345d8c76e6fSDave Hansen inc_nlink(inode); 3469b6533c9SSripathi Kodi if (v9fs_proto_dotl(v9ses)) 3479b6533c9SSripathi Kodi inode->i_op = &v9fs_dir_inode_operations_dotl; 3489b6533c9SSripathi Kodi else if (v9fs_proto_dotu(v9ses)) 3499b6533c9SSripathi Kodi inode->i_op = &v9fs_dir_inode_operations_dotu; 350b501611aSEric Van Hensbergen else 3512bad8471SEric Van Hensbergen inode->i_op = &v9fs_dir_inode_operations; 3529b6533c9SSripathi Kodi 3539b6533c9SSripathi Kodi if (v9fs_proto_dotl(v9ses)) 3549b6533c9SSripathi Kodi inode->i_fop = &v9fs_dir_operations_dotl; 3559b6533c9SSripathi Kodi else 3562bad8471SEric Van Hensbergen inode->i_fop = &v9fs_dir_operations; 3579b6533c9SSripathi Kodi 3582bad8471SEric Van Hensbergen break; 3592bad8471SEric Van Hensbergen default: 3602bb54115SAbhishek Kulkarni P9_DPRINTK(P9_DEBUG_ERROR, "BAD mode 0x%x S_IFMT 0x%x\n", 3612bad8471SEric Van Hensbergen mode, mode & S_IFMT); 3622bb54115SAbhishek Kulkarni err = -EINVAL; 3632bb54115SAbhishek Kulkarni goto error; 3642bad8471SEric Van Hensbergen } 3652bb54115SAbhishek Kulkarni 3662bad8471SEric Van Hensbergen return inode; 3672bb54115SAbhishek Kulkarni 3682bb54115SAbhishek Kulkarni error: 3692bb54115SAbhishek Kulkarni iput(inode); 3702bb54115SAbhishek Kulkarni return ERR_PTR(err); 3712bad8471SEric Van Hensbergen } 3722bad8471SEric Van Hensbergen 373bd238fb4SLatchesar Ionkov /* 3746a3124a3SLatchesar Ionkov static struct v9fs_fid* 3756a3124a3SLatchesar Ionkov v9fs_clone_walk(struct v9fs_session_info *v9ses, u32 fid, struct dentry *dentry) 3766a3124a3SLatchesar Ionkov { 3776a3124a3SLatchesar Ionkov int err; 378736c4b85SMika Kukkonen int nfid; 3796a3124a3SLatchesar Ionkov struct v9fs_fid *ret; 3806a3124a3SLatchesar Ionkov struct v9fs_fcall *fcall; 3810b8dd177SLatchesar Ionkov 3826a3124a3SLatchesar Ionkov nfid = v9fs_get_idpool(&v9ses->fidpool); 3836a3124a3SLatchesar Ionkov if (nfid < 0) { 3840b8dd177SLatchesar Ionkov eprintk(KERN_WARNING, "no free fids available\n"); 385731805b4SLatchesar Ionkov return ERR_PTR(-ENOSPC); 3860b8dd177SLatchesar Ionkov } 3870b8dd177SLatchesar Ionkov 3886a3124a3SLatchesar Ionkov err = v9fs_t_walk(v9ses, fid, nfid, (char *) dentry->d_name.name, 3896a3124a3SLatchesar Ionkov &fcall); 3906a3124a3SLatchesar Ionkov 3916a3124a3SLatchesar Ionkov if (err < 0) { 39241e5a6acSLatchesar Ionkov if (fcall && fcall->id == RWALK) 39341e5a6acSLatchesar Ionkov goto clunk_fid; 39441e5a6acSLatchesar Ionkov 3956a3124a3SLatchesar Ionkov PRINT_FCALL_ERROR("walk error", fcall); 3966a3124a3SLatchesar Ionkov v9fs_put_idpool(nfid, &v9ses->fidpool); 3976a3124a3SLatchesar Ionkov goto error; 3980b8dd177SLatchesar Ionkov } 3996a3124a3SLatchesar Ionkov 4003cf6429aSLatchesar Ionkov kfree(fcall); 4013cf6429aSLatchesar Ionkov fcall = NULL; 4026a3124a3SLatchesar Ionkov ret = v9fs_fid_create(v9ses, nfid); 4036a3124a3SLatchesar Ionkov if (!ret) { 4046a3124a3SLatchesar Ionkov err = -ENOMEM; 4056a3124a3SLatchesar Ionkov goto clunk_fid; 4060b8dd177SLatchesar Ionkov } 4072bad8471SEric Van Hensbergen 4086a3124a3SLatchesar Ionkov err = v9fs_fid_insert(ret, dentry); 4096a3124a3SLatchesar Ionkov if (err < 0) { 4106a3124a3SLatchesar Ionkov v9fs_fid_destroy(ret); 4116a3124a3SLatchesar Ionkov goto clunk_fid; 4126a3124a3SLatchesar Ionkov } 4132bad8471SEric Van Hensbergen 4146a3124a3SLatchesar Ionkov return ret; 4156a3124a3SLatchesar Ionkov 4166a3124a3SLatchesar Ionkov clunk_fid: 4176a3124a3SLatchesar Ionkov v9fs_t_clunk(v9ses, nfid); 4186a3124a3SLatchesar Ionkov 4196a3124a3SLatchesar Ionkov error: 4206a3124a3SLatchesar Ionkov kfree(fcall); 4216a3124a3SLatchesar Ionkov return ERR_PTR(err); 4226a3124a3SLatchesar Ionkov } 423bd238fb4SLatchesar Ionkov */ 4246a3124a3SLatchesar Ionkov 42560e78d2cSAbhishek Kulkarni 42660e78d2cSAbhishek Kulkarni /** 42760e78d2cSAbhishek Kulkarni * v9fs_clear_inode - release an inode 42860e78d2cSAbhishek Kulkarni * @inode: inode to release 42960e78d2cSAbhishek Kulkarni * 43060e78d2cSAbhishek Kulkarni */ 43160e78d2cSAbhishek Kulkarni void v9fs_clear_inode(struct inode *inode) 43260e78d2cSAbhishek Kulkarni { 43360e78d2cSAbhishek Kulkarni filemap_fdatawrite(inode->i_mapping); 43460e78d2cSAbhishek Kulkarni 43560e78d2cSAbhishek Kulkarni #ifdef CONFIG_9P_FSCACHE 43660e78d2cSAbhishek Kulkarni v9fs_cache_inode_put_cookie(inode); 43760e78d2cSAbhishek Kulkarni #endif 43860e78d2cSAbhishek Kulkarni } 43960e78d2cSAbhishek Kulkarni 4405174fdabSLatchesar Ionkov static struct inode * 441f0853122SSripathi Kodi v9fs_inode(struct v9fs_session_info *v9ses, struct p9_fid *fid, 4426a3124a3SLatchesar Ionkov struct super_block *sb) 4436a3124a3SLatchesar Ionkov { 4446a3124a3SLatchesar Ionkov int err, umode; 445f0853122SSripathi Kodi struct inode *ret = NULL; 44651a87c55SEric Van Hensbergen struct p9_wstat *st; 4476a3124a3SLatchesar Ionkov 448bd238fb4SLatchesar Ionkov st = p9_client_stat(fid); 44902bc3567SAbhishek Kulkarni if (IS_ERR(st)) 45002bc3567SAbhishek Kulkarni return ERR_CAST(st); 4512bad8471SEric Van Hensbergen 452bd238fb4SLatchesar Ionkov umode = p9mode2unixmode(v9ses, st->mode); 4536a3124a3SLatchesar Ionkov ret = v9fs_get_inode(sb, umode); 4546a3124a3SLatchesar Ionkov if (IS_ERR(ret)) { 4556a3124a3SLatchesar Ionkov err = PTR_ERR(ret); 4566a3124a3SLatchesar Ionkov goto error; 4572bad8471SEric Van Hensbergen } 4582bad8471SEric Van Hensbergen 459bd238fb4SLatchesar Ionkov v9fs_stat2inode(st, ret, sb); 460bd238fb4SLatchesar Ionkov ret->i_ino = v9fs_qid2ino(&st->qid); 46160e78d2cSAbhishek Kulkarni 46260e78d2cSAbhishek Kulkarni #ifdef CONFIG_9P_FSCACHE 46360e78d2cSAbhishek Kulkarni v9fs_vcookie_set_qid(ret, &st->qid); 46460e78d2cSAbhishek Kulkarni v9fs_cache_inode_get_cookie(ret); 46560e78d2cSAbhishek Kulkarni #endif 46602bc3567SAbhishek Kulkarni p9stat_free(st); 467bd238fb4SLatchesar Ionkov kfree(st); 4686a3124a3SLatchesar Ionkov return ret; 4696a3124a3SLatchesar Ionkov error: 47002bc3567SAbhishek Kulkarni p9stat_free(st); 471bd238fb4SLatchesar Ionkov kfree(st); 4726a3124a3SLatchesar Ionkov return ERR_PTR(err); 4732bad8471SEric Van Hensbergen } 4742bad8471SEric Van Hensbergen 475f0853122SSripathi Kodi static struct inode * 476f0853122SSripathi Kodi v9fs_inode_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid, 477f0853122SSripathi Kodi struct super_block *sb) 478f0853122SSripathi Kodi { 479f0853122SSripathi Kodi struct inode *ret = NULL; 480f0853122SSripathi Kodi int err; 481f0853122SSripathi Kodi struct p9_stat_dotl *st; 482f0853122SSripathi Kodi 483f0853122SSripathi Kodi st = p9_client_getattr_dotl(fid, P9_STATS_BASIC); 484f0853122SSripathi Kodi if (IS_ERR(st)) 485f0853122SSripathi Kodi return ERR_CAST(st); 486f0853122SSripathi Kodi 487f0853122SSripathi Kodi ret = v9fs_get_inode(sb, st->st_mode); 488f0853122SSripathi Kodi if (IS_ERR(ret)) { 489f0853122SSripathi Kodi err = PTR_ERR(ret); 490f0853122SSripathi Kodi goto error; 491f0853122SSripathi Kodi } 492f0853122SSripathi Kodi 493f0853122SSripathi Kodi v9fs_stat2inode_dotl(st, ret); 494f0853122SSripathi Kodi ret->i_ino = v9fs_qid2ino(&st->qid); 495f0853122SSripathi Kodi #ifdef CONFIG_9P_FSCACHE 496f0853122SSripathi Kodi v9fs_vcookie_set_qid(ret, &st->qid); 497f0853122SSripathi Kodi v9fs_cache_inode_get_cookie(ret); 498f0853122SSripathi Kodi #endif 499f0853122SSripathi Kodi kfree(st); 500f0853122SSripathi Kodi return ret; 501f0853122SSripathi Kodi error: 502f0853122SSripathi Kodi kfree(st); 503f0853122SSripathi Kodi return ERR_PTR(err); 504f0853122SSripathi Kodi } 505f0853122SSripathi Kodi 506f0853122SSripathi Kodi /** 507f0853122SSripathi Kodi * v9fs_inode_from_fid - Helper routine to populate an inode by 508f0853122SSripathi Kodi * issuing a attribute request 509f0853122SSripathi Kodi * @v9ses: session information 510f0853122SSripathi Kodi * @fid: fid to issue attribute request for 511f0853122SSripathi Kodi * @sb: superblock on which to create inode 512f0853122SSripathi Kodi * 513f0853122SSripathi Kodi */ 514f0853122SSripathi Kodi static inline struct inode * 515f0853122SSripathi Kodi v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid, 516f0853122SSripathi Kodi struct super_block *sb) 517f0853122SSripathi Kodi { 518f0853122SSripathi Kodi if (v9fs_proto_dotl(v9ses)) 519f0853122SSripathi Kodi return v9fs_inode_dotl(v9ses, fid, sb); 520f0853122SSripathi Kodi else 521f0853122SSripathi Kodi return v9fs_inode(v9ses, fid, sb); 522f0853122SSripathi Kodi } 523f0853122SSripathi Kodi 5242bad8471SEric Van Hensbergen /** 5252bad8471SEric Van Hensbergen * v9fs_remove - helper function to remove files and directories 52673c592b9SEric Van Hensbergen * @dir: directory inode that is being deleted 52773c592b9SEric Van Hensbergen * @file: dentry that is being deleted 52873c592b9SEric Van Hensbergen * @rmdir: removing a directory 5292bad8471SEric Van Hensbergen * 5302bad8471SEric Van Hensbergen */ 5312bad8471SEric Van Hensbergen 5322bad8471SEric Van Hensbergen static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir) 5332bad8471SEric Van Hensbergen { 534d994f405SAneesh Kumar K.V int retval; 535bd238fb4SLatchesar Ionkov struct inode *file_inode; 536bd238fb4SLatchesar Ionkov struct p9_fid *v9fid; 5372bad8471SEric Van Hensbergen 538bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "inode: %p dentry: %p rmdir: %d\n", dir, file, 5392bad8471SEric Van Hensbergen rmdir); 5402bad8471SEric Van Hensbergen 5412bad8471SEric Van Hensbergen file_inode = file->d_inode; 542c959df9fSLatchesar Ionkov v9fid = v9fs_fid_clone(file); 543da977b2cSEric Van Hensbergen if (IS_ERR(v9fid)) 544da977b2cSEric Van Hensbergen return PTR_ERR(v9fid); 5452bad8471SEric Van Hensbergen 546d994f405SAneesh Kumar K.V retval = p9_client_remove(v9fid); 547d994f405SAneesh Kumar K.V if (!retval) 548d994f405SAneesh Kumar K.V drop_nlink(file_inode); 549d994f405SAneesh Kumar K.V return retval; 5502bad8471SEric Van Hensbergen } 5512bad8471SEric Van Hensbergen 5526a3124a3SLatchesar Ionkov static int 5536a3124a3SLatchesar Ionkov v9fs_open_created(struct inode *inode, struct file *file) 5546a3124a3SLatchesar Ionkov { 5556a3124a3SLatchesar Ionkov return 0; 5566a3124a3SLatchesar Ionkov } 5576a3124a3SLatchesar Ionkov 558bd238fb4SLatchesar Ionkov 559bd238fb4SLatchesar Ionkov /** 560bd238fb4SLatchesar Ionkov * v9fs_create - Create a file 561ee443996SEric Van Hensbergen * @v9ses: session information 562ee443996SEric Van Hensbergen * @dir: directory that dentry is being created in 563bd238fb4SLatchesar Ionkov * @dentry: dentry that is being created 5640e15597eSAbhishek Kulkarni * @extension: 9p2000.u extension string to support devices, etc. 565bd238fb4SLatchesar Ionkov * @perm: create permissions 566bd238fb4SLatchesar Ionkov * @mode: open mode 567bd238fb4SLatchesar Ionkov * 568bd238fb4SLatchesar Ionkov */ 569bd238fb4SLatchesar Ionkov static struct p9_fid * 570bd238fb4SLatchesar Ionkov v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, 571bd238fb4SLatchesar Ionkov struct dentry *dentry, char *extension, u32 perm, u8 mode) 572bd238fb4SLatchesar Ionkov { 573bd238fb4SLatchesar Ionkov int err; 574bd238fb4SLatchesar Ionkov char *name; 575bd238fb4SLatchesar Ionkov struct p9_fid *dfid, *ofid, *fid; 576bd238fb4SLatchesar Ionkov struct inode *inode; 577bd238fb4SLatchesar Ionkov 57851a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); 57951a87c55SEric Van Hensbergen 580bd238fb4SLatchesar Ionkov err = 0; 581bd238fb4SLatchesar Ionkov ofid = NULL; 582bd238fb4SLatchesar Ionkov fid = NULL; 583bd238fb4SLatchesar Ionkov name = (char *) dentry->d_name.name; 5846d27e64dSVenkateswararao Jujjuri dfid = v9fs_fid_lookup(dentry->d_parent); 585bd238fb4SLatchesar Ionkov if (IS_ERR(dfid)) { 586bd238fb4SLatchesar Ionkov err = PTR_ERR(dfid); 5876d27e64dSVenkateswararao Jujjuri P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); 5886d27e64dSVenkateswararao Jujjuri return ERR_PTR(err); 589bd238fb4SLatchesar Ionkov } 590bd238fb4SLatchesar Ionkov 591bd238fb4SLatchesar Ionkov /* clone a fid to use for creation */ 592bd238fb4SLatchesar Ionkov ofid = p9_client_walk(dfid, 0, NULL, 1); 593bd238fb4SLatchesar Ionkov if (IS_ERR(ofid)) { 594bd238fb4SLatchesar Ionkov err = PTR_ERR(ofid); 59551a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); 5966d27e64dSVenkateswararao Jujjuri return ERR_PTR(err); 597bd238fb4SLatchesar Ionkov } 598bd238fb4SLatchesar Ionkov 599bd238fb4SLatchesar Ionkov err = p9_client_fcreate(ofid, name, perm, mode, extension); 60051a87c55SEric Van Hensbergen if (err < 0) { 60151a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "p9_client_fcreate failed %d\n", err); 602bd238fb4SLatchesar Ionkov goto error; 60351a87c55SEric Van Hensbergen } 604bd238fb4SLatchesar Ionkov 605bd238fb4SLatchesar Ionkov /* now walk from the parent so we can get unopened fid */ 6066d27e64dSVenkateswararao Jujjuri fid = p9_client_walk(dfid, 1, &name, 1); 607bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) { 608bd238fb4SLatchesar Ionkov err = PTR_ERR(fid); 60951a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); 610bd238fb4SLatchesar Ionkov fid = NULL; 611bd238fb4SLatchesar Ionkov goto error; 6126d27e64dSVenkateswararao Jujjuri } 613bd238fb4SLatchesar Ionkov 614bd238fb4SLatchesar Ionkov /* instantiate inode and assign the unopened fid to the dentry */ 615bd238fb4SLatchesar Ionkov inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); 616bd238fb4SLatchesar Ionkov if (IS_ERR(inode)) { 617bd238fb4SLatchesar Ionkov err = PTR_ERR(inode); 61851a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err); 619bd238fb4SLatchesar Ionkov goto error; 620bd238fb4SLatchesar Ionkov } 621bd238fb4SLatchesar Ionkov 622bd238fb4SLatchesar Ionkov if (v9ses->cache) 623bd238fb4SLatchesar Ionkov dentry->d_op = &v9fs_cached_dentry_operations; 624bd238fb4SLatchesar Ionkov else 625bd238fb4SLatchesar Ionkov dentry->d_op = &v9fs_dentry_operations; 626bd238fb4SLatchesar Ionkov 627bd238fb4SLatchesar Ionkov d_instantiate(dentry, inode); 62850fb6d2bSAbhishek Kulkarni err = v9fs_fid_add(dentry, fid); 62950fb6d2bSAbhishek Kulkarni if (err < 0) 63050fb6d2bSAbhishek Kulkarni goto error; 63150fb6d2bSAbhishek Kulkarni 632bd238fb4SLatchesar Ionkov return ofid; 633bd238fb4SLatchesar Ionkov 634bd238fb4SLatchesar Ionkov error: 635bd238fb4SLatchesar Ionkov if (ofid) 636bd238fb4SLatchesar Ionkov p9_client_clunk(ofid); 637bd238fb4SLatchesar Ionkov 638bd238fb4SLatchesar Ionkov if (fid) 639bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 640bd238fb4SLatchesar Ionkov 641bd238fb4SLatchesar Ionkov return ERR_PTR(err); 642bd238fb4SLatchesar Ionkov } 643bd238fb4SLatchesar Ionkov 6442bad8471SEric Van Hensbergen /** 6452bad8471SEric Van Hensbergen * v9fs_vfs_create - VFS hook to create files 646ee443996SEric Van Hensbergen * @dir: directory inode that is being created 6472bad8471SEric Van Hensbergen * @dentry: dentry that is being deleted 6486a3124a3SLatchesar Ionkov * @mode: create permissions 6492bad8471SEric Van Hensbergen * @nd: path information 6502bad8471SEric Van Hensbergen * 6512bad8471SEric Van Hensbergen */ 6522bad8471SEric Van Hensbergen 6532bad8471SEric Van Hensbergen static int 6546a3124a3SLatchesar Ionkov v9fs_vfs_create(struct inode *dir, struct dentry *dentry, int mode, 6552bad8471SEric Van Hensbergen struct nameidata *nd) 6562bad8471SEric Van Hensbergen { 6576a3124a3SLatchesar Ionkov int err; 658bd238fb4SLatchesar Ionkov u32 perm; 6596a3124a3SLatchesar Ionkov int flags; 6606a3124a3SLatchesar Ionkov struct v9fs_session_info *v9ses; 661bd238fb4SLatchesar Ionkov struct p9_fid *fid; 6626a3124a3SLatchesar Ionkov struct file *filp; 6636a3124a3SLatchesar Ionkov 664bd238fb4SLatchesar Ionkov err = 0; 665bd238fb4SLatchesar Ionkov fid = NULL; 6666a3124a3SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dir); 667da977b2cSEric Van Hensbergen perm = unixmode2p9mode(v9ses, mode); 6686a3124a3SLatchesar Ionkov if (nd && nd->flags & LOOKUP_OPEN) 6696a3124a3SLatchesar Ionkov flags = nd->intent.open.flags - 1; 6706a3124a3SLatchesar Ionkov else 6716a3124a3SLatchesar Ionkov flags = O_RDWR; 6726a3124a3SLatchesar Ionkov 673bd238fb4SLatchesar Ionkov fid = v9fs_create(v9ses, dir, dentry, NULL, perm, 674dd6102fbSSripathi Kodi v9fs_uflags2omode(flags, 675dd6102fbSSripathi Kodi v9fs_proto_dotu(v9ses))); 676bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) { 677bd238fb4SLatchesar Ionkov err = PTR_ERR(fid); 678bd238fb4SLatchesar Ionkov fid = NULL; 6796a3124a3SLatchesar Ionkov goto error; 6806a3124a3SLatchesar Ionkov } 6816a3124a3SLatchesar Ionkov 682bd238fb4SLatchesar Ionkov /* if we are opening a file, assign the open fid to the file */ 6836a3124a3SLatchesar Ionkov if (nd && nd->flags & LOOKUP_OPEN) { 6846a3124a3SLatchesar Ionkov filp = lookup_instantiate_filp(nd, dentry, v9fs_open_created); 6856a3124a3SLatchesar Ionkov if (IS_ERR(filp)) { 686bd238fb4SLatchesar Ionkov err = PTR_ERR(filp); 687bd238fb4SLatchesar Ionkov goto error; 6886a3124a3SLatchesar Ionkov } 6896a3124a3SLatchesar Ionkov 690bd238fb4SLatchesar Ionkov filp->private_data = fid; 691bd238fb4SLatchesar Ionkov } else 692bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 6936a3124a3SLatchesar Ionkov 6946a3124a3SLatchesar Ionkov return 0; 6956a3124a3SLatchesar Ionkov 6966a3124a3SLatchesar Ionkov error: 697bd238fb4SLatchesar Ionkov if (fid) 698bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 6996a3124a3SLatchesar Ionkov 7006a3124a3SLatchesar Ionkov return err; 7012bad8471SEric Van Hensbergen } 7022bad8471SEric Van Hensbergen 7032bad8471SEric Van Hensbergen /** 7042bad8471SEric Van Hensbergen * v9fs_vfs_mkdir - VFS mkdir hook to create a directory 705ee443996SEric Van Hensbergen * @dir: inode that is being unlinked 7062bad8471SEric Van Hensbergen * @dentry: dentry that is being unlinked 7072bad8471SEric Van Hensbergen * @mode: mode for new directory 7082bad8471SEric Van Hensbergen * 7092bad8471SEric Van Hensbergen */ 7102bad8471SEric Van Hensbergen 7116a3124a3SLatchesar Ionkov static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) 7122bad8471SEric Van Hensbergen { 7136a3124a3SLatchesar Ionkov int err; 714bd238fb4SLatchesar Ionkov u32 perm; 7156a3124a3SLatchesar Ionkov struct v9fs_session_info *v9ses; 716bd238fb4SLatchesar Ionkov struct p9_fid *fid; 7176a3124a3SLatchesar Ionkov 718bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); 719bd238fb4SLatchesar Ionkov err = 0; 7206a3124a3SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dir); 7216a3124a3SLatchesar Ionkov perm = unixmode2p9mode(v9ses, mode | S_IFDIR); 722bd238fb4SLatchesar Ionkov fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_OREAD); 723bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) { 724bd238fb4SLatchesar Ionkov err = PTR_ERR(fid); 725bd238fb4SLatchesar Ionkov fid = NULL; 7266a3124a3SLatchesar Ionkov } 7276a3124a3SLatchesar Ionkov 728bd238fb4SLatchesar Ionkov if (fid) 729bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 7306a3124a3SLatchesar Ionkov 7316a3124a3SLatchesar Ionkov return err; 7322bad8471SEric Van Hensbergen } 7332bad8471SEric Van Hensbergen 7342bad8471SEric Van Hensbergen /** 7352bad8471SEric Van Hensbergen * v9fs_vfs_lookup - VFS lookup hook to "walk" to a new inode 7362bad8471SEric Van Hensbergen * @dir: inode that is being walked from 7372bad8471SEric Van Hensbergen * @dentry: dentry that is being walked to? 7382bad8471SEric Van Hensbergen * @nameidata: path data 7392bad8471SEric Van Hensbergen * 7402bad8471SEric Van Hensbergen */ 7412bad8471SEric Van Hensbergen 7422bad8471SEric Van Hensbergen static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, 7432bad8471SEric Van Hensbergen struct nameidata *nameidata) 7442bad8471SEric Van Hensbergen { 7452bad8471SEric Van Hensbergen struct super_block *sb; 7462bad8471SEric Van Hensbergen struct v9fs_session_info *v9ses; 747bd238fb4SLatchesar Ionkov struct p9_fid *dfid, *fid; 7482bad8471SEric Van Hensbergen struct inode *inode; 749bd238fb4SLatchesar Ionkov char *name; 7502bad8471SEric Van Hensbergen int result = 0; 7512bad8471SEric Van Hensbergen 752bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p nameidata: %p\n", 753731805b4SLatchesar Ionkov dir, dentry->d_name.name, dentry, nameidata); 7542bad8471SEric Van Hensbergen 75511e9b49bSSripathi Kodi if (dentry->d_name.len > NAME_MAX) 75611e9b49bSSripathi Kodi return ERR_PTR(-ENAMETOOLONG); 75711e9b49bSSripathi Kodi 7582bad8471SEric Van Hensbergen sb = dir->i_sb; 7592bad8471SEric Van Hensbergen v9ses = v9fs_inode2v9ses(dir); 760bd238fb4SLatchesar Ionkov dfid = v9fs_fid_lookup(dentry->d_parent); 761bd238fb4SLatchesar Ionkov if (IS_ERR(dfid)) 762e231c2eeSDavid Howells return ERR_CAST(dfid); 7632bad8471SEric Van Hensbergen 764bd238fb4SLatchesar Ionkov name = (char *) dentry->d_name.name; 765bd238fb4SLatchesar Ionkov fid = p9_client_walk(dfid, 1, &name, 1); 766bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) { 767bd238fb4SLatchesar Ionkov result = PTR_ERR(fid); 7682bad8471SEric Van Hensbergen if (result == -ENOENT) { 76985e0df24SAneesh Kumar K.V inode = NULL; 77085e0df24SAneesh Kumar K.V goto inst_out; 7712bad8471SEric Van Hensbergen } 7722bad8471SEric Van Hensbergen 773bd238fb4SLatchesar Ionkov return ERR_PTR(result); 7742bad8471SEric Van Hensbergen } 7752bad8471SEric Van Hensbergen 776bd238fb4SLatchesar Ionkov inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); 777bd238fb4SLatchesar Ionkov if (IS_ERR(inode)) { 778bd238fb4SLatchesar Ionkov result = PTR_ERR(inode); 779bd238fb4SLatchesar Ionkov inode = NULL; 780bd238fb4SLatchesar Ionkov goto error; 7812bad8471SEric Van Hensbergen } 7822bad8471SEric Van Hensbergen 783bd238fb4SLatchesar Ionkov result = v9fs_fid_add(dentry, fid); 7846a3124a3SLatchesar Ionkov if (result < 0) 785bd238fb4SLatchesar Ionkov goto error; 7866a3124a3SLatchesar Ionkov 78785e0df24SAneesh Kumar K.V inst_out: 78885e0df24SAneesh Kumar K.V if (v9ses->cache) 789e03abc0cSEric Van Hensbergen dentry->d_op = &v9fs_cached_dentry_operations; 790e03abc0cSEric Van Hensbergen else 791e03abc0cSEric Van Hensbergen dentry->d_op = &v9fs_dentry_operations; 7922bad8471SEric Van Hensbergen 7932bad8471SEric Van Hensbergen d_add(dentry, inode); 7942bad8471SEric Van Hensbergen return NULL; 7952bad8471SEric Van Hensbergen 796bd238fb4SLatchesar Ionkov error: 797bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 798da977b2cSEric Van Hensbergen 7992bad8471SEric Van Hensbergen return ERR_PTR(result); 8002bad8471SEric Van Hensbergen } 8012bad8471SEric Van Hensbergen 8022bad8471SEric Van Hensbergen /** 8032bad8471SEric Van Hensbergen * v9fs_vfs_unlink - VFS unlink hook to delete an inode 8042bad8471SEric Van Hensbergen * @i: inode that is being unlinked 80573c592b9SEric Van Hensbergen * @d: dentry that is being unlinked 8062bad8471SEric Van Hensbergen * 8072bad8471SEric Van Hensbergen */ 8082bad8471SEric Van Hensbergen 8092bad8471SEric Van Hensbergen static int v9fs_vfs_unlink(struct inode *i, struct dentry *d) 8102bad8471SEric Van Hensbergen { 8112bad8471SEric Van Hensbergen return v9fs_remove(i, d, 0); 8122bad8471SEric Van Hensbergen } 8132bad8471SEric Van Hensbergen 8142bad8471SEric Van Hensbergen /** 8152bad8471SEric Van Hensbergen * v9fs_vfs_rmdir - VFS unlink hook to delete a directory 8162bad8471SEric Van Hensbergen * @i: inode that is being unlinked 81773c592b9SEric Van Hensbergen * @d: dentry that is being unlinked 8182bad8471SEric Van Hensbergen * 8192bad8471SEric Van Hensbergen */ 8202bad8471SEric Van Hensbergen 8212bad8471SEric Van Hensbergen static int v9fs_vfs_rmdir(struct inode *i, struct dentry *d) 8222bad8471SEric Van Hensbergen { 8232bad8471SEric Van Hensbergen return v9fs_remove(i, d, 1); 8242bad8471SEric Van Hensbergen } 8252bad8471SEric Van Hensbergen 8262bad8471SEric Van Hensbergen /** 8272bad8471SEric Van Hensbergen * v9fs_vfs_rename - VFS hook to rename an inode 8282bad8471SEric Van Hensbergen * @old_dir: old dir inode 8292bad8471SEric Van Hensbergen * @old_dentry: old dentry 8302bad8471SEric Van Hensbergen * @new_dir: new dir inode 8312bad8471SEric Van Hensbergen * @new_dentry: new dentry 8322bad8471SEric Van Hensbergen * 8332bad8471SEric Van Hensbergen */ 8342bad8471SEric Van Hensbergen 8352bad8471SEric Van Hensbergen static int 8362bad8471SEric Van Hensbergen v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry, 8372bad8471SEric Van Hensbergen struct inode *new_dir, struct dentry *new_dentry) 8382bad8471SEric Van Hensbergen { 839bd238fb4SLatchesar Ionkov struct inode *old_inode; 840bd238fb4SLatchesar Ionkov struct v9fs_session_info *v9ses; 841bd238fb4SLatchesar Ionkov struct p9_fid *oldfid; 842bd238fb4SLatchesar Ionkov struct p9_fid *olddirfid; 843bd238fb4SLatchesar Ionkov struct p9_fid *newdirfid; 844bd238fb4SLatchesar Ionkov struct p9_wstat wstat; 845bd238fb4SLatchesar Ionkov int retval; 8462bad8471SEric Van Hensbergen 847bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "\n"); 848bd238fb4SLatchesar Ionkov retval = 0; 849bd238fb4SLatchesar Ionkov old_inode = old_dentry->d_inode; 850bd238fb4SLatchesar Ionkov v9ses = v9fs_inode2v9ses(old_inode); 851bd238fb4SLatchesar Ionkov oldfid = v9fs_fid_lookup(old_dentry); 852da977b2cSEric Van Hensbergen if (IS_ERR(oldfid)) 853da977b2cSEric Van Hensbergen return PTR_ERR(oldfid); 854da977b2cSEric Van Hensbergen 855da977b2cSEric Van Hensbergen olddirfid = v9fs_fid_clone(old_dentry->d_parent); 856da977b2cSEric Van Hensbergen if (IS_ERR(olddirfid)) { 857da977b2cSEric Van Hensbergen retval = PTR_ERR(olddirfid); 858bd238fb4SLatchesar Ionkov goto done; 859da977b2cSEric Van Hensbergen } 860da977b2cSEric Van Hensbergen 861da977b2cSEric Van Hensbergen newdirfid = v9fs_fid_clone(new_dentry->d_parent); 862da977b2cSEric Van Hensbergen if (IS_ERR(newdirfid)) { 863da977b2cSEric Van Hensbergen retval = PTR_ERR(newdirfid); 864bd238fb4SLatchesar Ionkov goto clunk_olddir; 8652bad8471SEric Van Hensbergen } 8662bad8471SEric Van Hensbergen 8674681dbdaSSripathi Kodi if (v9fs_proto_dotl(v9ses)) { 8684681dbdaSSripathi Kodi retval = p9_client_rename(oldfid, newdirfid, 8694681dbdaSSripathi Kodi (char *) new_dentry->d_name.name); 8704681dbdaSSripathi Kodi if (retval != -ENOSYS) 8714681dbdaSSripathi Kodi goto clunk_newdir; 8724681dbdaSSripathi Kodi } 8734681dbdaSSripathi Kodi 8742bad8471SEric Van Hensbergen /* 9P can only handle file rename in the same directory */ 8752bad8471SEric Van Hensbergen if (memcmp(&olddirfid->qid, &newdirfid->qid, sizeof(newdirfid->qid))) { 876bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_ERROR, 877bd238fb4SLatchesar Ionkov "old dir and new dir are different\n"); 878621997cdSEric Van Hensbergen retval = -EXDEV; 879bd238fb4SLatchesar Ionkov goto clunk_newdir; 8802bad8471SEric Van Hensbergen } 8812bad8471SEric Van Hensbergen 882531b1094SLatchesar Ionkov v9fs_blank_wstat(&wstat); 883ba17674fSLatchesar Ionkov wstat.muid = v9ses->uname; 884531b1094SLatchesar Ionkov wstat.name = (char *) new_dentry->d_name.name; 885bd238fb4SLatchesar Ionkov retval = p9_client_wstat(oldfid, &wstat); 8862bad8471SEric Van Hensbergen 887bd238fb4SLatchesar Ionkov clunk_newdir: 88822150c4fSLatchesar Ionkov p9_client_clunk(newdirfid); 8892bad8471SEric Van Hensbergen 890bd238fb4SLatchesar Ionkov clunk_olddir: 89122150c4fSLatchesar Ionkov p9_client_clunk(olddirfid); 8922bad8471SEric Van Hensbergen 893bd238fb4SLatchesar Ionkov done: 8942bad8471SEric Van Hensbergen return retval; 8952bad8471SEric Van Hensbergen } 8962bad8471SEric Van Hensbergen 8972bad8471SEric Van Hensbergen /** 898943ffb58SAdrian Bunk * v9fs_vfs_getattr - retrieve file metadata 899ee443996SEric Van Hensbergen * @mnt: mount information 900ee443996SEric Van Hensbergen * @dentry: file to get attributes on 901ee443996SEric Van Hensbergen * @stat: metadata structure to populate 9022bad8471SEric Van Hensbergen * 9032bad8471SEric Van Hensbergen */ 9042bad8471SEric Van Hensbergen 9052bad8471SEric Van Hensbergen static int 9062bad8471SEric Van Hensbergen v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry, 9072bad8471SEric Van Hensbergen struct kstat *stat) 9082bad8471SEric Van Hensbergen { 909bd238fb4SLatchesar Ionkov int err; 910bd238fb4SLatchesar Ionkov struct v9fs_session_info *v9ses; 911bd238fb4SLatchesar Ionkov struct p9_fid *fid; 91251a87c55SEric Van Hensbergen struct p9_wstat *st; 9132bad8471SEric Van Hensbergen 914bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry); 915bd238fb4SLatchesar Ionkov err = -EPERM; 916bd238fb4SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dentry->d_inode); 91760e78d2cSAbhishek Kulkarni if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) 9189523a841SEric Van Hensbergen return simple_getattr(mnt, dentry, stat); 9199523a841SEric Van Hensbergen 920bd238fb4SLatchesar Ionkov fid = v9fs_fid_lookup(dentry); 921da977b2cSEric Van Hensbergen if (IS_ERR(fid)) 922da977b2cSEric Van Hensbergen return PTR_ERR(fid); 9232bad8471SEric Van Hensbergen 924bd238fb4SLatchesar Ionkov st = p9_client_stat(fid); 925bd238fb4SLatchesar Ionkov if (IS_ERR(st)) 926bd238fb4SLatchesar Ionkov return PTR_ERR(st); 9272bad8471SEric Van Hensbergen 928bd238fb4SLatchesar Ionkov v9fs_stat2inode(st, dentry->d_inode, dentry->d_inode->i_sb); 9292bad8471SEric Van Hensbergen generic_fillattr(dentry->d_inode, stat); 9302bad8471SEric Van Hensbergen 931bd238fb4SLatchesar Ionkov kfree(st); 932bd238fb4SLatchesar Ionkov return 0; 9332bad8471SEric Van Hensbergen } 9342bad8471SEric Van Hensbergen 935f0853122SSripathi Kodi static int 936f0853122SSripathi Kodi v9fs_vfs_getattr_dotl(struct vfsmount *mnt, struct dentry *dentry, 937f0853122SSripathi Kodi struct kstat *stat) 938f0853122SSripathi Kodi { 939f0853122SSripathi Kodi int err; 940f0853122SSripathi Kodi struct v9fs_session_info *v9ses; 941f0853122SSripathi Kodi struct p9_fid *fid; 942f0853122SSripathi Kodi struct p9_stat_dotl *st; 943f0853122SSripathi Kodi 944f0853122SSripathi Kodi P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry); 945f0853122SSripathi Kodi err = -EPERM; 946f0853122SSripathi Kodi v9ses = v9fs_inode2v9ses(dentry->d_inode); 947f0853122SSripathi Kodi if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) 948f0853122SSripathi Kodi return simple_getattr(mnt, dentry, stat); 949f0853122SSripathi Kodi 950f0853122SSripathi Kodi fid = v9fs_fid_lookup(dentry); 951f0853122SSripathi Kodi if (IS_ERR(fid)) 952f0853122SSripathi Kodi return PTR_ERR(fid); 953f0853122SSripathi Kodi 954f0853122SSripathi Kodi /* Ask for all the fields in stat structure. Server will return 955f0853122SSripathi Kodi * whatever it supports 956f0853122SSripathi Kodi */ 957f0853122SSripathi Kodi 958f0853122SSripathi Kodi st = p9_client_getattr_dotl(fid, P9_STATS_ALL); 959f0853122SSripathi Kodi if (IS_ERR(st)) 960f0853122SSripathi Kodi return PTR_ERR(st); 961f0853122SSripathi Kodi 962f0853122SSripathi Kodi v9fs_stat2inode_dotl(st, dentry->d_inode); 963f0853122SSripathi Kodi generic_fillattr(dentry->d_inode, stat); 964f0853122SSripathi Kodi /* Change block size to what the server returned */ 965f0853122SSripathi Kodi stat->blksize = st->st_blksize; 966f0853122SSripathi Kodi 967f0853122SSripathi Kodi kfree(st); 968f0853122SSripathi Kodi return 0; 969f0853122SSripathi Kodi } 970f0853122SSripathi Kodi 9712bad8471SEric Van Hensbergen /** 9722bad8471SEric Van Hensbergen * v9fs_vfs_setattr - set file metadata 9732bad8471SEric Van Hensbergen * @dentry: file whose metadata to set 9742bad8471SEric Van Hensbergen * @iattr: metadata assignment structure 9752bad8471SEric Van Hensbergen * 9762bad8471SEric Van Hensbergen */ 9772bad8471SEric Van Hensbergen 9782bad8471SEric Van Hensbergen static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr) 9792bad8471SEric Van Hensbergen { 980bd238fb4SLatchesar Ionkov int retval; 981bd238fb4SLatchesar Ionkov struct v9fs_session_info *v9ses; 982bd238fb4SLatchesar Ionkov struct p9_fid *fid; 983bd238fb4SLatchesar Ionkov struct p9_wstat wstat; 9842bad8471SEric Van Hensbergen 985bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "\n"); 986bd238fb4SLatchesar Ionkov retval = -EPERM; 987bd238fb4SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dentry->d_inode); 988bd238fb4SLatchesar Ionkov fid = v9fs_fid_lookup(dentry); 989da977b2cSEric Van Hensbergen if(IS_ERR(fid)) 990da977b2cSEric Van Hensbergen return PTR_ERR(fid); 9912bad8471SEric Van Hensbergen 992531b1094SLatchesar Ionkov v9fs_blank_wstat(&wstat); 9932bad8471SEric Van Hensbergen if (iattr->ia_valid & ATTR_MODE) 994531b1094SLatchesar Ionkov wstat.mode = unixmode2p9mode(v9ses, iattr->ia_mode); 9952bad8471SEric Van Hensbergen 9962bad8471SEric Van Hensbergen if (iattr->ia_valid & ATTR_MTIME) 997531b1094SLatchesar Ionkov wstat.mtime = iattr->ia_mtime.tv_sec; 9982bad8471SEric Van Hensbergen 9992bad8471SEric Van Hensbergen if (iattr->ia_valid & ATTR_ATIME) 1000531b1094SLatchesar Ionkov wstat.atime = iattr->ia_atime.tv_sec; 10012bad8471SEric Van Hensbergen 10022bad8471SEric Van Hensbergen if (iattr->ia_valid & ATTR_SIZE) 1003531b1094SLatchesar Ionkov wstat.length = iattr->ia_size; 10042bad8471SEric Van Hensbergen 1005dd6102fbSSripathi Kodi if (v9fs_proto_dotu(v9ses)) { 1006531b1094SLatchesar Ionkov if (iattr->ia_valid & ATTR_UID) 1007531b1094SLatchesar Ionkov wstat.n_uid = iattr->ia_uid; 10082bad8471SEric Van Hensbergen 1009531b1094SLatchesar Ionkov if (iattr->ia_valid & ATTR_GID) 1010531b1094SLatchesar Ionkov wstat.n_gid = iattr->ia_gid; 10112bad8471SEric Van Hensbergen } 10122bad8471SEric Van Hensbergen 1013bd238fb4SLatchesar Ionkov retval = p9_client_wstat(fid, &wstat); 1014bd238fb4SLatchesar Ionkov if (retval >= 0) 1015bd238fb4SLatchesar Ionkov retval = inode_setattr(dentry->d_inode, iattr); 10162bad8471SEric Van Hensbergen 1017bd238fb4SLatchesar Ionkov return retval; 10182bad8471SEric Van Hensbergen } 10192bad8471SEric Van Hensbergen 10202bad8471SEric Van Hensbergen /** 102187d7845aSSripathi Kodi * v9fs_vfs_setattr_dotl - set file metadata 102287d7845aSSripathi Kodi * @dentry: file whose metadata to set 102387d7845aSSripathi Kodi * @iattr: metadata assignment structure 102487d7845aSSripathi Kodi * 102587d7845aSSripathi Kodi */ 102687d7845aSSripathi Kodi 102787d7845aSSripathi Kodi static int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr) 102887d7845aSSripathi Kodi { 102987d7845aSSripathi Kodi int retval; 103087d7845aSSripathi Kodi struct v9fs_session_info *v9ses; 103187d7845aSSripathi Kodi struct p9_fid *fid; 103287d7845aSSripathi Kodi struct p9_iattr_dotl p9attr; 103387d7845aSSripathi Kodi 103487d7845aSSripathi Kodi P9_DPRINTK(P9_DEBUG_VFS, "\n"); 103587d7845aSSripathi Kodi 103687d7845aSSripathi Kodi retval = inode_change_ok(dentry->d_inode, iattr); 103787d7845aSSripathi Kodi if (retval) 103887d7845aSSripathi Kodi return retval; 103987d7845aSSripathi Kodi 104087d7845aSSripathi Kodi p9attr.valid = iattr->ia_valid; 104187d7845aSSripathi Kodi p9attr.mode = iattr->ia_mode; 104287d7845aSSripathi Kodi p9attr.uid = iattr->ia_uid; 104387d7845aSSripathi Kodi p9attr.gid = iattr->ia_gid; 104487d7845aSSripathi Kodi p9attr.size = iattr->ia_size; 104587d7845aSSripathi Kodi p9attr.atime_sec = iattr->ia_atime.tv_sec; 104687d7845aSSripathi Kodi p9attr.atime_nsec = iattr->ia_atime.tv_nsec; 104787d7845aSSripathi Kodi p9attr.mtime_sec = iattr->ia_mtime.tv_sec; 104887d7845aSSripathi Kodi p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec; 104987d7845aSSripathi Kodi 105087d7845aSSripathi Kodi retval = -EPERM; 105187d7845aSSripathi Kodi v9ses = v9fs_inode2v9ses(dentry->d_inode); 105287d7845aSSripathi Kodi fid = v9fs_fid_lookup(dentry); 105387d7845aSSripathi Kodi if (IS_ERR(fid)) 105487d7845aSSripathi Kodi return PTR_ERR(fid); 105587d7845aSSripathi Kodi 105687d7845aSSripathi Kodi retval = p9_client_setattr(fid, &p9attr); 105787d7845aSSripathi Kodi if (retval >= 0) 105887d7845aSSripathi Kodi retval = inode_setattr(dentry->d_inode, iattr); 105987d7845aSSripathi Kodi 106087d7845aSSripathi Kodi return retval; 106187d7845aSSripathi Kodi } 106287d7845aSSripathi Kodi 106387d7845aSSripathi Kodi /** 1064531b1094SLatchesar Ionkov * v9fs_stat2inode - populate an inode structure with mistat info 1065531b1094SLatchesar Ionkov * @stat: Plan 9 metadata (mistat) structure 10662bad8471SEric Van Hensbergen * @inode: inode to populate 10672bad8471SEric Van Hensbergen * @sb: superblock of filesystem 10682bad8471SEric Van Hensbergen * 10692bad8471SEric Van Hensbergen */ 10702bad8471SEric Van Hensbergen 10712bad8471SEric Van Hensbergen void 107251a87c55SEric Van Hensbergen v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode, 10732bad8471SEric Van Hensbergen struct super_block *sb) 10742bad8471SEric Van Hensbergen { 1075531b1094SLatchesar Ionkov char ext[32]; 10765717144aSAneesh Kumar K.V char tag_name[14]; 10775717144aSAneesh Kumar K.V unsigned int i_nlink; 10782bad8471SEric Van Hensbergen struct v9fs_session_info *v9ses = sb->s_fs_info; 10792bad8471SEric Van Hensbergen 10802bad8471SEric Van Hensbergen inode->i_nlink = 1; 10812bad8471SEric Van Hensbergen 1082531b1094SLatchesar Ionkov inode->i_atime.tv_sec = stat->atime; 1083531b1094SLatchesar Ionkov inode->i_mtime.tv_sec = stat->mtime; 1084531b1094SLatchesar Ionkov inode->i_ctime.tv_sec = stat->mtime; 10852bad8471SEric Van Hensbergen 1086bd32b82dSLatchesar Ionkov inode->i_uid = v9ses->dfltuid; 1087bd32b82dSLatchesar Ionkov inode->i_gid = v9ses->dfltgid; 10882bad8471SEric Van Hensbergen 1089dd6102fbSSripathi Kodi if (v9fs_proto_dotu(v9ses)) { 1090531b1094SLatchesar Ionkov inode->i_uid = stat->n_uid; 1091531b1094SLatchesar Ionkov inode->i_gid = stat->n_gid; 1092531b1094SLatchesar Ionkov } 10935717144aSAneesh Kumar K.V if ((S_ISREG(inode->i_mode)) || (S_ISDIR(inode->i_mode))) { 10945717144aSAneesh Kumar K.V if (v9fs_proto_dotu(v9ses) && (stat->extension[0] != '\0')) { 10955717144aSAneesh Kumar K.V /* 10965717144aSAneesh Kumar K.V * Hadlink support got added later to 10975717144aSAneesh Kumar K.V * to the .u extension. So there can be 10985717144aSAneesh Kumar K.V * server out there that doesn't support 10995717144aSAneesh Kumar K.V * this even with .u extension. So check 11005717144aSAneesh Kumar K.V * for non NULL stat->extension 11015717144aSAneesh Kumar K.V */ 11025717144aSAneesh Kumar K.V strncpy(ext, stat->extension, sizeof(ext)); 11035717144aSAneesh Kumar K.V /* HARDLINKCOUNT %u */ 11045717144aSAneesh Kumar K.V sscanf(ext, "%13s %u", tag_name, &i_nlink); 11055717144aSAneesh Kumar K.V if (!strncmp(tag_name, "HARDLINKCOUNT", 13)) 11065717144aSAneesh Kumar K.V inode->i_nlink = i_nlink; 11075717144aSAneesh Kumar K.V } 11085717144aSAneesh Kumar K.V } 1109531b1094SLatchesar Ionkov inode->i_mode = p9mode2unixmode(v9ses, stat->mode); 11102bad8471SEric Van Hensbergen if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode))) { 11112bad8471SEric Van Hensbergen char type = 0; 11122bad8471SEric Van Hensbergen int major = -1; 11132bad8471SEric Van Hensbergen int minor = -1; 1114531b1094SLatchesar Ionkov 111551a87c55SEric Van Hensbergen strncpy(ext, stat->extension, sizeof(ext)); 1116531b1094SLatchesar Ionkov sscanf(ext, "%c %u %u", &type, &major, &minor); 11172bad8471SEric Van Hensbergen switch (type) { 11182bad8471SEric Van Hensbergen case 'c': 11192bad8471SEric Van Hensbergen inode->i_mode &= ~S_IFBLK; 11202bad8471SEric Van Hensbergen inode->i_mode |= S_IFCHR; 11212bad8471SEric Van Hensbergen break; 11222bad8471SEric Van Hensbergen case 'b': 11232bad8471SEric Van Hensbergen break; 11242bad8471SEric Van Hensbergen default: 1125bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_ERROR, 112651a87c55SEric Van Hensbergen "Unknown special type %c %s\n", type, 112751a87c55SEric Van Hensbergen stat->extension); 11282bad8471SEric Van Hensbergen }; 11292bad8471SEric Van Hensbergen inode->i_rdev = MKDEV(major, minor); 113057c7b4e6SMagnus Deininger init_special_inode(inode, inode->i_mode, inode->i_rdev); 11312bad8471SEric Van Hensbergen } else 11322bad8471SEric Van Hensbergen inode->i_rdev = 0; 11332bad8471SEric Van Hensbergen 11347549ae3eSAbhishek Kulkarni i_size_write(inode, stat->length); 11352bad8471SEric Van Hensbergen 1136bd238fb4SLatchesar Ionkov /* not real number of blocks, but 512 byte ones ... */ 11377549ae3eSAbhishek Kulkarni inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9; 11382bad8471SEric Van Hensbergen } 11392bad8471SEric Van Hensbergen 11402bad8471SEric Van Hensbergen /** 1141f0853122SSripathi Kodi * v9fs_stat2inode_dotl - populate an inode structure with stat info 1142f0853122SSripathi Kodi * @stat: stat structure 1143f0853122SSripathi Kodi * @inode: inode to populate 1144f0853122SSripathi Kodi * @sb: superblock of filesystem 1145f0853122SSripathi Kodi * 1146f0853122SSripathi Kodi */ 1147f0853122SSripathi Kodi 1148f0853122SSripathi Kodi void 1149f0853122SSripathi Kodi v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode) 1150f0853122SSripathi Kodi { 1151f0853122SSripathi Kodi 1152f0853122SSripathi Kodi if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) { 1153f0853122SSripathi Kodi inode->i_atime.tv_sec = stat->st_atime_sec; 1154f0853122SSripathi Kodi inode->i_atime.tv_nsec = stat->st_atime_nsec; 1155f0853122SSripathi Kodi inode->i_mtime.tv_sec = stat->st_mtime_sec; 1156f0853122SSripathi Kodi inode->i_mtime.tv_nsec = stat->st_mtime_nsec; 1157f0853122SSripathi Kodi inode->i_ctime.tv_sec = stat->st_ctime_sec; 1158f0853122SSripathi Kodi inode->i_ctime.tv_nsec = stat->st_ctime_nsec; 1159f0853122SSripathi Kodi inode->i_uid = stat->st_uid; 1160f0853122SSripathi Kodi inode->i_gid = stat->st_gid; 1161f0853122SSripathi Kodi inode->i_nlink = stat->st_nlink; 1162f0853122SSripathi Kodi inode->i_mode = stat->st_mode; 1163f0853122SSripathi Kodi inode->i_rdev = new_decode_dev(stat->st_rdev); 1164f0853122SSripathi Kodi 1165f0853122SSripathi Kodi if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode))) 1166f0853122SSripathi Kodi init_special_inode(inode, inode->i_mode, inode->i_rdev); 1167f0853122SSripathi Kodi 1168f0853122SSripathi Kodi i_size_write(inode, stat->st_size); 1169f0853122SSripathi Kodi inode->i_blocks = stat->st_blocks; 1170f0853122SSripathi Kodi } else { 1171f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_ATIME) { 1172f0853122SSripathi Kodi inode->i_atime.tv_sec = stat->st_atime_sec; 1173f0853122SSripathi Kodi inode->i_atime.tv_nsec = stat->st_atime_nsec; 1174f0853122SSripathi Kodi } 1175f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_MTIME) { 1176f0853122SSripathi Kodi inode->i_mtime.tv_sec = stat->st_mtime_sec; 1177f0853122SSripathi Kodi inode->i_mtime.tv_nsec = stat->st_mtime_nsec; 1178f0853122SSripathi Kodi } 1179f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_CTIME) { 1180f0853122SSripathi Kodi inode->i_ctime.tv_sec = stat->st_ctime_sec; 1181f0853122SSripathi Kodi inode->i_ctime.tv_nsec = stat->st_ctime_nsec; 1182f0853122SSripathi Kodi } 1183f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_UID) 1184f0853122SSripathi Kodi inode->i_uid = stat->st_uid; 1185f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_GID) 1186f0853122SSripathi Kodi inode->i_gid = stat->st_gid; 1187f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_NLINK) 1188f0853122SSripathi Kodi inode->i_nlink = stat->st_nlink; 1189f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_MODE) { 1190f0853122SSripathi Kodi inode->i_mode = stat->st_mode; 1191f0853122SSripathi Kodi if ((S_ISBLK(inode->i_mode)) || 1192f0853122SSripathi Kodi (S_ISCHR(inode->i_mode))) 1193f0853122SSripathi Kodi init_special_inode(inode, inode->i_mode, 1194f0853122SSripathi Kodi inode->i_rdev); 1195f0853122SSripathi Kodi } 1196f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_RDEV) 1197f0853122SSripathi Kodi inode->i_rdev = new_decode_dev(stat->st_rdev); 1198f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_SIZE) 1199f0853122SSripathi Kodi i_size_write(inode, stat->st_size); 1200f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_BLOCKS) 1201f0853122SSripathi Kodi inode->i_blocks = stat->st_blocks; 1202f0853122SSripathi Kodi } 1203f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_GEN) 1204f0853122SSripathi Kodi inode->i_generation = stat->st_gen; 1205f0853122SSripathi Kodi 1206f0853122SSripathi Kodi /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION 1207f0853122SSripathi Kodi * because the inode structure does not have fields for them. 1208f0853122SSripathi Kodi */ 1209f0853122SSripathi Kodi } 1210f0853122SSripathi Kodi 1211f0853122SSripathi Kodi /** 12122bad8471SEric Van Hensbergen * v9fs_qid2ino - convert qid into inode number 12132bad8471SEric Van Hensbergen * @qid: qid to hash 12142bad8471SEric Van Hensbergen * 12152bad8471SEric Van Hensbergen * BUG: potential for inode number collisions? 12162bad8471SEric Van Hensbergen */ 12172bad8471SEric Van Hensbergen 1218bd238fb4SLatchesar Ionkov ino_t v9fs_qid2ino(struct p9_qid *qid) 12192bad8471SEric Van Hensbergen { 12202bad8471SEric Van Hensbergen u64 path = qid->path + 2; 12212bad8471SEric Van Hensbergen ino_t i = 0; 12222bad8471SEric Van Hensbergen 12232bad8471SEric Van Hensbergen if (sizeof(ino_t) == sizeof(path)) 12242bad8471SEric Van Hensbergen memcpy(&i, &path, sizeof(ino_t)); 12252bad8471SEric Van Hensbergen else 12262bad8471SEric Van Hensbergen i = (ino_t) (path ^ (path >> 32)); 12272bad8471SEric Van Hensbergen 12282bad8471SEric Van Hensbergen return i; 12292bad8471SEric Van Hensbergen } 12302bad8471SEric Van Hensbergen 12312bad8471SEric Van Hensbergen /** 12322bad8471SEric Van Hensbergen * v9fs_readlink - read a symlink's location (internal version) 12332bad8471SEric Van Hensbergen * @dentry: dentry for symlink 123473c592b9SEric Van Hensbergen * @buffer: buffer to load symlink location into 12352bad8471SEric Van Hensbergen * @buflen: length of buffer 12362bad8471SEric Van Hensbergen * 12372bad8471SEric Van Hensbergen */ 12382bad8471SEric Van Hensbergen 12392bad8471SEric Van Hensbergen static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen) 12402bad8471SEric Van Hensbergen { 1241bd238fb4SLatchesar Ionkov int retval; 12422bad8471SEric Van Hensbergen 1243bd238fb4SLatchesar Ionkov struct v9fs_session_info *v9ses; 1244bd238fb4SLatchesar Ionkov struct p9_fid *fid; 124551a87c55SEric Van Hensbergen struct p9_wstat *st; 12462bad8471SEric Van Hensbergen 1247bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, " %s\n", dentry->d_name.name); 1248bd238fb4SLatchesar Ionkov retval = -EPERM; 1249bd238fb4SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dentry->d_inode); 1250bd238fb4SLatchesar Ionkov fid = v9fs_fid_lookup(dentry); 1251da977b2cSEric Van Hensbergen if (IS_ERR(fid)) 1252da977b2cSEric Van Hensbergen return PTR_ERR(fid); 12532bad8471SEric Van Hensbergen 125450cc42ffSVenkateswararao Jujjuri (JV) if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) 1255bd238fb4SLatchesar Ionkov return -EBADF; 12562bad8471SEric Van Hensbergen 1257bd238fb4SLatchesar Ionkov st = p9_client_stat(fid); 1258bd238fb4SLatchesar Ionkov if (IS_ERR(st)) 1259bd238fb4SLatchesar Ionkov return PTR_ERR(st); 12602bad8471SEric Van Hensbergen 1261bd238fb4SLatchesar Ionkov if (!(st->mode & P9_DMSYMLINK)) { 12622bad8471SEric Van Hensbergen retval = -EINVAL; 1263bd238fb4SLatchesar Ionkov goto done; 12642bad8471SEric Van Hensbergen } 12652bad8471SEric Van Hensbergen 12662bad8471SEric Van Hensbergen /* copy extension buffer into buffer */ 126751a87c55SEric Van Hensbergen strncpy(buffer, st->extension, buflen); 12682bad8471SEric Van Hensbergen 1269bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, 127051a87c55SEric Van Hensbergen "%s -> %s (%s)\n", dentry->d_name.name, st->extension, buffer); 1271bd238fb4SLatchesar Ionkov 12722511cd0bSMartin Stava retval = strnlen(buffer, buflen); 1273bd238fb4SLatchesar Ionkov done: 1274bd238fb4SLatchesar Ionkov kfree(st); 12752bad8471SEric Van Hensbergen return retval; 12762bad8471SEric Van Hensbergen } 12772bad8471SEric Van Hensbergen 12782bad8471SEric Van Hensbergen /** 12792bad8471SEric Van Hensbergen * v9fs_vfs_follow_link - follow a symlink path 12802bad8471SEric Van Hensbergen * @dentry: dentry for symlink 12812bad8471SEric Van Hensbergen * @nd: nameidata 12822bad8471SEric Van Hensbergen * 12832bad8471SEric Van Hensbergen */ 12842bad8471SEric Van Hensbergen 12852bad8471SEric Van Hensbergen static void *v9fs_vfs_follow_link(struct dentry *dentry, struct nameidata *nd) 12862bad8471SEric Van Hensbergen { 12872bad8471SEric Van Hensbergen int len = 0; 12882bad8471SEric Van Hensbergen char *link = __getname(); 12892bad8471SEric Van Hensbergen 1290bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "%s n", dentry->d_name.name); 12912bad8471SEric Van Hensbergen 12922bad8471SEric Van Hensbergen if (!link) 12932bad8471SEric Van Hensbergen link = ERR_PTR(-ENOMEM); 12942bad8471SEric Van Hensbergen else { 129516cce6d2SLatchesar Ionkov len = v9fs_readlink(dentry, link, PATH_MAX); 12962bad8471SEric Van Hensbergen 12972bad8471SEric Van Hensbergen if (len < 0) { 1298ce44eeb6SDavi Arnaut __putname(link); 12992bad8471SEric Van Hensbergen link = ERR_PTR(len); 13002bad8471SEric Van Hensbergen } else 13012511cd0bSMartin Stava link[min(len, PATH_MAX-1)] = 0; 13022bad8471SEric Van Hensbergen } 13032bad8471SEric Van Hensbergen nd_set_link(nd, link); 13042bad8471SEric Van Hensbergen 13052bad8471SEric Van Hensbergen return NULL; 13062bad8471SEric Van Hensbergen } 13072bad8471SEric Van Hensbergen 13082bad8471SEric Van Hensbergen /** 13092bad8471SEric Van Hensbergen * v9fs_vfs_put_link - release a symlink path 13102bad8471SEric Van Hensbergen * @dentry: dentry for symlink 13112bad8471SEric Van Hensbergen * @nd: nameidata 1312ee443996SEric Van Hensbergen * @p: unused 13132bad8471SEric Van Hensbergen * 13142bad8471SEric Van Hensbergen */ 13152bad8471SEric Van Hensbergen 1316ee443996SEric Van Hensbergen static void 1317ee443996SEric Van Hensbergen v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) 13182bad8471SEric Van Hensbergen { 13192bad8471SEric Van Hensbergen char *s = nd_get_link(nd); 13202bad8471SEric Van Hensbergen 13216ff23207SDuane Griffin P9_DPRINTK(P9_DEBUG_VFS, " %s %s\n", dentry->d_name.name, 13226ff23207SDuane Griffin IS_ERR(s) ? "<error>" : s); 13232bad8471SEric Van Hensbergen if (!IS_ERR(s)) 1324ce44eeb6SDavi Arnaut __putname(s); 13252bad8471SEric Van Hensbergen } 13262bad8471SEric Van Hensbergen 1327ee443996SEric Van Hensbergen /** 1328ee443996SEric Van Hensbergen * v9fs_vfs_mkspecial - create a special file 1329ee443996SEric Van Hensbergen * @dir: inode to create special file in 1330ee443996SEric Van Hensbergen * @dentry: dentry to create 1331ee443996SEric Van Hensbergen * @mode: mode to create special file 1332ee443996SEric Van Hensbergen * @extension: 9p2000.u format extension string representing special file 1333ee443996SEric Van Hensbergen * 1334ee443996SEric Van Hensbergen */ 1335ee443996SEric Van Hensbergen 1336531b1094SLatchesar Ionkov static int v9fs_vfs_mkspecial(struct inode *dir, struct dentry *dentry, 1337531b1094SLatchesar Ionkov int mode, const char *extension) 1338531b1094SLatchesar Ionkov { 1339bd238fb4SLatchesar Ionkov u32 perm; 1340531b1094SLatchesar Ionkov struct v9fs_session_info *v9ses; 1341bd238fb4SLatchesar Ionkov struct p9_fid *fid; 1342531b1094SLatchesar Ionkov 13436a3124a3SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dir); 1344dd6102fbSSripathi Kodi if (!v9fs_proto_dotu(v9ses)) { 1345bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_ERROR, "not extended\n"); 13466a3124a3SLatchesar Ionkov return -EPERM; 1347531b1094SLatchesar Ionkov } 1348531b1094SLatchesar Ionkov 1349da977b2cSEric Van Hensbergen perm = unixmode2p9mode(v9ses, mode); 1350bd238fb4SLatchesar Ionkov fid = v9fs_create(v9ses, dir, dentry, (char *) extension, perm, 1351bd238fb4SLatchesar Ionkov P9_OREAD); 1352bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) 1353bd238fb4SLatchesar Ionkov return PTR_ERR(fid); 1354da977b2cSEric Van Hensbergen 1355bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 13566a3124a3SLatchesar Ionkov return 0; 1357531b1094SLatchesar Ionkov } 1358531b1094SLatchesar Ionkov 1359531b1094SLatchesar Ionkov /** 136050cc42ffSVenkateswararao Jujjuri (JV) * v9fs_vfs_symlink_dotl - helper function to create symlinks 136150cc42ffSVenkateswararao Jujjuri (JV) * @dir: directory inode containing symlink 136250cc42ffSVenkateswararao Jujjuri (JV) * @dentry: dentry for symlink 136350cc42ffSVenkateswararao Jujjuri (JV) * @symname: symlink data 136450cc42ffSVenkateswararao Jujjuri (JV) * 136550cc42ffSVenkateswararao Jujjuri (JV) * See Also: 9P2000.L RFC for more information 136650cc42ffSVenkateswararao Jujjuri (JV) * 136750cc42ffSVenkateswararao Jujjuri (JV) */ 136850cc42ffSVenkateswararao Jujjuri (JV) 136950cc42ffSVenkateswararao Jujjuri (JV) static int 137050cc42ffSVenkateswararao Jujjuri (JV) v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry, 137150cc42ffSVenkateswararao Jujjuri (JV) const char *symname) 137250cc42ffSVenkateswararao Jujjuri (JV) { 137350cc42ffSVenkateswararao Jujjuri (JV) struct v9fs_session_info *v9ses; 137450cc42ffSVenkateswararao Jujjuri (JV) struct p9_fid *dfid; 137550cc42ffSVenkateswararao Jujjuri (JV) struct p9_fid *fid = NULL; 137650cc42ffSVenkateswararao Jujjuri (JV) struct inode *inode; 137750cc42ffSVenkateswararao Jujjuri (JV) struct p9_qid qid; 137850cc42ffSVenkateswararao Jujjuri (JV) char *name; 137950cc42ffSVenkateswararao Jujjuri (JV) int err; 138050cc42ffSVenkateswararao Jujjuri (JV) gid_t gid; 138150cc42ffSVenkateswararao Jujjuri (JV) 138250cc42ffSVenkateswararao Jujjuri (JV) name = (char *) dentry->d_name.name; 138350cc42ffSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "v9fs_vfs_symlink_dotl : %lu,%s,%s\n", 138450cc42ffSVenkateswararao Jujjuri (JV) dir->i_ino, name, symname); 138550cc42ffSVenkateswararao Jujjuri (JV) v9ses = v9fs_inode2v9ses(dir); 138650cc42ffSVenkateswararao Jujjuri (JV) 138750cc42ffSVenkateswararao Jujjuri (JV) dfid = v9fs_fid_lookup(dentry->d_parent); 138850cc42ffSVenkateswararao Jujjuri (JV) if (IS_ERR(dfid)) { 138950cc42ffSVenkateswararao Jujjuri (JV) err = PTR_ERR(dfid); 139050cc42ffSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); 139150cc42ffSVenkateswararao Jujjuri (JV) return err; 139250cc42ffSVenkateswararao Jujjuri (JV) } 139350cc42ffSVenkateswararao Jujjuri (JV) 139450cc42ffSVenkateswararao Jujjuri (JV) gid = v9fs_get_fsgid_for_create(dir); 139550cc42ffSVenkateswararao Jujjuri (JV) 139650cc42ffSVenkateswararao Jujjuri (JV) if (gid < 0) { 139750cc42ffSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "v9fs_get_egid failed %d\n", gid); 139850cc42ffSVenkateswararao Jujjuri (JV) goto error; 139950cc42ffSVenkateswararao Jujjuri (JV) } 140050cc42ffSVenkateswararao Jujjuri (JV) 140150cc42ffSVenkateswararao Jujjuri (JV) /* Server doesn't alter fid on TSYMLINK. Hence no need to clone it. */ 140250cc42ffSVenkateswararao Jujjuri (JV) err = p9_client_symlink(dfid, name, (char *)symname, gid, &qid); 140350cc42ffSVenkateswararao Jujjuri (JV) 140450cc42ffSVenkateswararao Jujjuri (JV) if (err < 0) { 140550cc42ffSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "p9_client_symlink failed %d\n", err); 140650cc42ffSVenkateswararao Jujjuri (JV) goto error; 140750cc42ffSVenkateswararao Jujjuri (JV) } 140850cc42ffSVenkateswararao Jujjuri (JV) 140950cc42ffSVenkateswararao Jujjuri (JV) if (v9ses->cache) { 141050cc42ffSVenkateswararao Jujjuri (JV) /* Now walk from the parent so we can get an unopened fid. */ 141150cc42ffSVenkateswararao Jujjuri (JV) fid = p9_client_walk(dfid, 1, &name, 1); 141250cc42ffSVenkateswararao Jujjuri (JV) if (IS_ERR(fid)) { 141350cc42ffSVenkateswararao Jujjuri (JV) err = PTR_ERR(fid); 141450cc42ffSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", 141550cc42ffSVenkateswararao Jujjuri (JV) err); 141650cc42ffSVenkateswararao Jujjuri (JV) fid = NULL; 141750cc42ffSVenkateswararao Jujjuri (JV) goto error; 141850cc42ffSVenkateswararao Jujjuri (JV) } 141950cc42ffSVenkateswararao Jujjuri (JV) 142050cc42ffSVenkateswararao Jujjuri (JV) /* instantiate inode and assign the unopened fid to dentry */ 142150cc42ffSVenkateswararao Jujjuri (JV) inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); 142250cc42ffSVenkateswararao Jujjuri (JV) if (IS_ERR(inode)) { 142350cc42ffSVenkateswararao Jujjuri (JV) err = PTR_ERR(inode); 142450cc42ffSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", 142550cc42ffSVenkateswararao Jujjuri (JV) err); 142650cc42ffSVenkateswararao Jujjuri (JV) goto error; 142750cc42ffSVenkateswararao Jujjuri (JV) } 142850cc42ffSVenkateswararao Jujjuri (JV) dentry->d_op = &v9fs_cached_dentry_operations; 142950cc42ffSVenkateswararao Jujjuri (JV) d_instantiate(dentry, inode); 143050cc42ffSVenkateswararao Jujjuri (JV) err = v9fs_fid_add(dentry, fid); 143150cc42ffSVenkateswararao Jujjuri (JV) if (err < 0) 143250cc42ffSVenkateswararao Jujjuri (JV) goto error; 143350cc42ffSVenkateswararao Jujjuri (JV) fid = NULL; 143450cc42ffSVenkateswararao Jujjuri (JV) } else { 143550cc42ffSVenkateswararao Jujjuri (JV) /* Not in cached mode. No need to populate inode with stat */ 143650cc42ffSVenkateswararao Jujjuri (JV) inode = v9fs_get_inode(dir->i_sb, S_IFLNK); 143750cc42ffSVenkateswararao Jujjuri (JV) if (IS_ERR(inode)) { 143850cc42ffSVenkateswararao Jujjuri (JV) err = PTR_ERR(inode); 143950cc42ffSVenkateswararao Jujjuri (JV) goto error; 144050cc42ffSVenkateswararao Jujjuri (JV) } 144150cc42ffSVenkateswararao Jujjuri (JV) dentry->d_op = &v9fs_dentry_operations; 144250cc42ffSVenkateswararao Jujjuri (JV) d_instantiate(dentry, inode); 144350cc42ffSVenkateswararao Jujjuri (JV) } 144450cc42ffSVenkateswararao Jujjuri (JV) 144550cc42ffSVenkateswararao Jujjuri (JV) error: 144650cc42ffSVenkateswararao Jujjuri (JV) if (fid) 144750cc42ffSVenkateswararao Jujjuri (JV) p9_client_clunk(fid); 144850cc42ffSVenkateswararao Jujjuri (JV) 144950cc42ffSVenkateswararao Jujjuri (JV) return err; 145050cc42ffSVenkateswararao Jujjuri (JV) } 145150cc42ffSVenkateswararao Jujjuri (JV) 145250cc42ffSVenkateswararao Jujjuri (JV) /** 1453531b1094SLatchesar Ionkov * v9fs_vfs_symlink - helper function to create symlinks 1454531b1094SLatchesar Ionkov * @dir: directory inode containing symlink 1455531b1094SLatchesar Ionkov * @dentry: dentry for symlink 1456531b1094SLatchesar Ionkov * @symname: symlink data 1457531b1094SLatchesar Ionkov * 1458ee443996SEric Van Hensbergen * See Also: 9P2000.u RFC for more information 1459531b1094SLatchesar Ionkov * 1460531b1094SLatchesar Ionkov */ 1461531b1094SLatchesar Ionkov 1462531b1094SLatchesar Ionkov static int 1463531b1094SLatchesar Ionkov v9fs_vfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) 1464531b1094SLatchesar Ionkov { 1465bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, " %lu,%s,%s\n", dir->i_ino, 1466bd238fb4SLatchesar Ionkov dentry->d_name.name, symname); 1467531b1094SLatchesar Ionkov 1468531b1094SLatchesar Ionkov return v9fs_vfs_mkspecial(dir, dentry, S_IFLNK, symname); 1469531b1094SLatchesar Ionkov } 1470531b1094SLatchesar Ionkov 14712bad8471SEric Van Hensbergen /** 14722bad8471SEric Van Hensbergen * v9fs_vfs_link - create a hardlink 14732bad8471SEric Van Hensbergen * @old_dentry: dentry for file to link to 14742bad8471SEric Van Hensbergen * @dir: inode destination for new link 147573c592b9SEric Van Hensbergen * @dentry: dentry for link 14762bad8471SEric Van Hensbergen * 14772bad8471SEric Van Hensbergen */ 14782bad8471SEric Van Hensbergen 14792bad8471SEric Van Hensbergen static int 14802bad8471SEric Van Hensbergen v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir, 14812bad8471SEric Van Hensbergen struct dentry *dentry) 14822bad8471SEric Van Hensbergen { 1483531b1094SLatchesar Ionkov int retval; 1484bd238fb4SLatchesar Ionkov struct p9_fid *oldfid; 1485531b1094SLatchesar Ionkov char *name; 14862bad8471SEric Van Hensbergen 1487bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, 1488bd238fb4SLatchesar Ionkov " %lu,%s,%s\n", dir->i_ino, dentry->d_name.name, 14892bad8471SEric Van Hensbergen old_dentry->d_name.name); 14902bad8471SEric Van Hensbergen 1491da977b2cSEric Van Hensbergen oldfid = v9fs_fid_clone(old_dentry); 1492da977b2cSEric Van Hensbergen if (IS_ERR(oldfid)) 1493da977b2cSEric Van Hensbergen return PTR_ERR(oldfid); 14942bad8471SEric Van Hensbergen 1495531b1094SLatchesar Ionkov name = __getname(); 1496da977b2cSEric Van Hensbergen if (unlikely(!name)) { 1497da977b2cSEric Van Hensbergen retval = -ENOMEM; 1498da977b2cSEric Van Hensbergen goto clunk_fid; 1499da977b2cSEric Van Hensbergen } 15000710d36aSFlorin Malita 150116cce6d2SLatchesar Ionkov sprintf(name, "%d\n", oldfid->fid); 1502bd238fb4SLatchesar Ionkov retval = v9fs_vfs_mkspecial(dir, dentry, P9_DMLINK, name); 1503531b1094SLatchesar Ionkov __putname(name); 15042bad8471SEric Van Hensbergen 1505da977b2cSEric Van Hensbergen clunk_fid: 1506bd238fb4SLatchesar Ionkov p9_client_clunk(oldfid); 15072bad8471SEric Van Hensbergen return retval; 15082bad8471SEric Van Hensbergen } 15092bad8471SEric Van Hensbergen 15102bad8471SEric Van Hensbergen /** 151109d34ee5SEric Van Hensbergen * v9fs_vfs_link_dotl - create a hardlink for dotl 151209d34ee5SEric Van Hensbergen * @old_dentry: dentry for file to link to 151309d34ee5SEric Van Hensbergen * @dir: inode destination for new link 151409d34ee5SEric Van Hensbergen * @dentry: dentry for link 151509d34ee5SEric Van Hensbergen * 151609d34ee5SEric Van Hensbergen */ 151709d34ee5SEric Van Hensbergen 151809d34ee5SEric Van Hensbergen static int 151909d34ee5SEric Van Hensbergen v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, 152009d34ee5SEric Van Hensbergen struct dentry *dentry) 152109d34ee5SEric Van Hensbergen { 152209d34ee5SEric Van Hensbergen int err; 152309d34ee5SEric Van Hensbergen struct p9_fid *dfid, *oldfid; 152409d34ee5SEric Van Hensbergen char *name; 152509d34ee5SEric Van Hensbergen struct v9fs_session_info *v9ses; 152609d34ee5SEric Van Hensbergen struct dentry *dir_dentry; 152709d34ee5SEric Van Hensbergen 152809d34ee5SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "dir ino: %lu, old_name: %s, new_name: %s\n", 152909d34ee5SEric Van Hensbergen dir->i_ino, old_dentry->d_name.name, 153009d34ee5SEric Van Hensbergen dentry->d_name.name); 153109d34ee5SEric Van Hensbergen 153209d34ee5SEric Van Hensbergen v9ses = v9fs_inode2v9ses(dir); 153309d34ee5SEric Van Hensbergen dir_dentry = v9fs_dentry_from_dir_inode(dir); 153409d34ee5SEric Van Hensbergen dfid = v9fs_fid_lookup(dir_dentry); 153509d34ee5SEric Van Hensbergen if (IS_ERR(dfid)) 153609d34ee5SEric Van Hensbergen return PTR_ERR(dfid); 153709d34ee5SEric Van Hensbergen 153809d34ee5SEric Van Hensbergen oldfid = v9fs_fid_lookup(old_dentry); 153909d34ee5SEric Van Hensbergen if (IS_ERR(oldfid)) 154009d34ee5SEric Van Hensbergen return PTR_ERR(oldfid); 154109d34ee5SEric Van Hensbergen 154209d34ee5SEric Van Hensbergen name = (char *) dentry->d_name.name; 154309d34ee5SEric Van Hensbergen 154409d34ee5SEric Van Hensbergen err = p9_client_link(dfid, oldfid, (char *)dentry->d_name.name); 154509d34ee5SEric Van Hensbergen 154609d34ee5SEric Van Hensbergen if (err < 0) { 154709d34ee5SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "p9_client_link failed %d\n", err); 154809d34ee5SEric Van Hensbergen return err; 154909d34ee5SEric Van Hensbergen } 155009d34ee5SEric Van Hensbergen 155109d34ee5SEric Van Hensbergen if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { 155209d34ee5SEric Van Hensbergen /* Get the latest stat info from server. */ 155309d34ee5SEric Van Hensbergen struct p9_fid *fid; 155409d34ee5SEric Van Hensbergen struct p9_stat_dotl *st; 155509d34ee5SEric Van Hensbergen 155609d34ee5SEric Van Hensbergen fid = v9fs_fid_lookup(old_dentry); 155709d34ee5SEric Van Hensbergen if (IS_ERR(fid)) 155809d34ee5SEric Van Hensbergen return PTR_ERR(fid); 155909d34ee5SEric Van Hensbergen 156009d34ee5SEric Van Hensbergen st = p9_client_getattr_dotl(fid, P9_STATS_BASIC); 156109d34ee5SEric Van Hensbergen if (IS_ERR(st)) 156209d34ee5SEric Van Hensbergen return PTR_ERR(st); 156309d34ee5SEric Van Hensbergen 156409d34ee5SEric Van Hensbergen v9fs_stat2inode_dotl(st, old_dentry->d_inode); 156509d34ee5SEric Van Hensbergen 156609d34ee5SEric Van Hensbergen kfree(st); 156709d34ee5SEric Van Hensbergen } else { 156809d34ee5SEric Van Hensbergen /* Caching disabled. No need to get upto date stat info. 156909d34ee5SEric Van Hensbergen * This dentry will be released immediately. So, just i_count++ 157009d34ee5SEric Van Hensbergen */ 157109d34ee5SEric Van Hensbergen atomic_inc(&old_dentry->d_inode->i_count); 157209d34ee5SEric Van Hensbergen } 157309d34ee5SEric Van Hensbergen 157409d34ee5SEric Van Hensbergen dentry->d_op = old_dentry->d_op; 157509d34ee5SEric Van Hensbergen d_instantiate(dentry, old_dentry->d_inode); 157609d34ee5SEric Van Hensbergen 157709d34ee5SEric Van Hensbergen return err; 157809d34ee5SEric Van Hensbergen } 157909d34ee5SEric Van Hensbergen 158009d34ee5SEric Van Hensbergen /** 15812bad8471SEric Van Hensbergen * v9fs_vfs_mknod - create a special file 15822bad8471SEric Van Hensbergen * @dir: inode destination for new link 15832bad8471SEric Van Hensbergen * @dentry: dentry for file 15842bad8471SEric Van Hensbergen * @mode: mode for creation 1585ee443996SEric Van Hensbergen * @rdev: device associated with special file 15862bad8471SEric Van Hensbergen * 15872bad8471SEric Van Hensbergen */ 15882bad8471SEric Van Hensbergen 15892bad8471SEric Van Hensbergen static int 15902bad8471SEric Van Hensbergen v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) 15912bad8471SEric Van Hensbergen { 1592531b1094SLatchesar Ionkov int retval; 1593531b1094SLatchesar Ionkov char *name; 15942bad8471SEric Van Hensbergen 1595bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, 1596bd238fb4SLatchesar Ionkov " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino, 15972bad8471SEric Van Hensbergen dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev)); 15982bad8471SEric Van Hensbergen 1599531b1094SLatchesar Ionkov if (!new_valid_dev(rdev)) 1600531b1094SLatchesar Ionkov return -EINVAL; 160173c592b9SEric Van Hensbergen 1602531b1094SLatchesar Ionkov name = __getname(); 1603c0291a05SEugene Teo if (!name) 1604c0291a05SEugene Teo return -ENOMEM; 16052bad8471SEric Van Hensbergen /* build extension */ 16062bad8471SEric Van Hensbergen if (S_ISBLK(mode)) 1607531b1094SLatchesar Ionkov sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev)); 16082bad8471SEric Van Hensbergen else if (S_ISCHR(mode)) 1609531b1094SLatchesar Ionkov sprintf(name, "c %u %u", MAJOR(rdev), MINOR(rdev)); 161073c592b9SEric Van Hensbergen else if (S_ISFIFO(mode)) 1611531b1094SLatchesar Ionkov *name = 0; 161275cc5c9bSVenkateswararao Jujjuri else if (S_ISSOCK(mode)) 161375cc5c9bSVenkateswararao Jujjuri *name = 0; 16142bad8471SEric Van Hensbergen else { 1615531b1094SLatchesar Ionkov __putname(name); 1616531b1094SLatchesar Ionkov return -EINVAL; 16172bad8471SEric Van Hensbergen } 16182bad8471SEric Van Hensbergen 1619531b1094SLatchesar Ionkov retval = v9fs_vfs_mkspecial(dir, dentry, mode, name); 1620531b1094SLatchesar Ionkov __putname(name); 16212bad8471SEric Van Hensbergen 16222bad8471SEric Van Hensbergen return retval; 16232bad8471SEric Van Hensbergen } 16242bad8471SEric Van Hensbergen 16254b43516aSM. Mohan Kumar /** 16264b43516aSM. Mohan Kumar * v9fs_vfs_mknod_dotl - create a special file 16274b43516aSM. Mohan Kumar * @dir: inode destination for new link 16284b43516aSM. Mohan Kumar * @dentry: dentry for file 16294b43516aSM. Mohan Kumar * @mode: mode for creation 16304b43516aSM. Mohan Kumar * @rdev: device associated with special file 16314b43516aSM. Mohan Kumar * 16324b43516aSM. Mohan Kumar */ 16334b43516aSM. Mohan Kumar static int 16344b43516aSM. Mohan Kumar v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int mode, 16354b43516aSM. Mohan Kumar dev_t rdev) 16364b43516aSM. Mohan Kumar { 16374b43516aSM. Mohan Kumar int err; 16384b43516aSM. Mohan Kumar char *name; 16394b43516aSM. Mohan Kumar struct v9fs_session_info *v9ses; 16404b43516aSM. Mohan Kumar struct p9_fid *fid = NULL, *dfid = NULL; 16414b43516aSM. Mohan Kumar struct inode *inode; 16424b43516aSM. Mohan Kumar gid_t gid; 16434b43516aSM. Mohan Kumar struct p9_qid qid; 16444b43516aSM. Mohan Kumar struct dentry *dir_entry; 16454b43516aSM. Mohan Kumar 16464b43516aSM. Mohan Kumar P9_DPRINTK(P9_DEBUG_VFS, 16474b43516aSM. Mohan Kumar " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino, 16484b43516aSM. Mohan Kumar dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev)); 16494b43516aSM. Mohan Kumar 16504b43516aSM. Mohan Kumar if (!new_valid_dev(rdev)) 16514b43516aSM. Mohan Kumar return -EINVAL; 16524b43516aSM. Mohan Kumar 16534b43516aSM. Mohan Kumar v9ses = v9fs_inode2v9ses(dir); 16544b43516aSM. Mohan Kumar dir_dentry = v9fs_dentry_from_dir_inode(dir); 16554b43516aSM. Mohan Kumar dfid = v9fs_fid_lookup(dir_entry); 16564b43516aSM. Mohan Kumar if (IS_ERR(dfid)) { 16574b43516aSM. Mohan Kumar err = PTR_ERR(dfid); 16584b43516aSM. Mohan Kumar P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); 16594b43516aSM. Mohan Kumar dfid = NULL; 16604b43516aSM. Mohan Kumar goto error; 16614b43516aSM. Mohan Kumar } 16624b43516aSM. Mohan Kumar 16634b43516aSM. Mohan Kumar gid = v9fs_get_fsgid_for_create(dir); 16644b43516aSM. Mohan Kumar if (gid < 0) { 16654b43516aSM. Mohan Kumar P9_DPRINTK(P9_DEBUG_VFS, "v9fs_get_fsgid_for_create failed\n"); 16664b43516aSM. Mohan Kumar goto error; 16674b43516aSM. Mohan Kumar } 16684b43516aSM. Mohan Kumar 16694b43516aSM. Mohan Kumar name = (char *) dentry->d_name.name; 16704b43516aSM. Mohan Kumar 16714b43516aSM. Mohan Kumar err = p9_client_mknod_dotl(dfid, name, mode, rdev, gid, &qid); 16724b43516aSM. Mohan Kumar if (err < 0) 16734b43516aSM. Mohan Kumar goto error; 16744b43516aSM. Mohan Kumar 16754b43516aSM. Mohan Kumar /* instantiate inode and assign the unopened fid to the dentry */ 16764b43516aSM. Mohan Kumar if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { 16774b43516aSM. Mohan Kumar fid = p9_client_walk(dfid, 1, &name, 1); 16784b43516aSM. Mohan Kumar if (IS_ERR(fid)) { 16794b43516aSM. Mohan Kumar err = PTR_ERR(fid); 16804b43516aSM. Mohan Kumar P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", 16814b43516aSM. Mohan Kumar err); 16824b43516aSM. Mohan Kumar fid = NULL; 16834b43516aSM. Mohan Kumar goto error; 16844b43516aSM. Mohan Kumar } 16854b43516aSM. Mohan Kumar 16864b43516aSM. Mohan Kumar inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); 16874b43516aSM. Mohan Kumar if (IS_ERR(inode)) { 16884b43516aSM. Mohan Kumar err = PTR_ERR(inode); 16894b43516aSM. Mohan Kumar P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", 16904b43516aSM. Mohan Kumar err); 16914b43516aSM. Mohan Kumar goto error; 16924b43516aSM. Mohan Kumar } 16934b43516aSM. Mohan Kumar dentry->d_op = &v9fs_cached_dentry_operations; 16944b43516aSM. Mohan Kumar d_instantiate(dentry, inode); 16954b43516aSM. Mohan Kumar err = v9fs_fid_add(dentry, fid); 16964b43516aSM. Mohan Kumar if (err < 0) 16974b43516aSM. Mohan Kumar goto error; 16984b43516aSM. Mohan Kumar fid = NULL; 16994b43516aSM. Mohan Kumar } else { 17004b43516aSM. Mohan Kumar /* 17014b43516aSM. Mohan Kumar * Not in cached mode. No need to populate inode with stat. 17024b43516aSM. Mohan Kumar * socket syscall returns a fd, so we need instantiate 17034b43516aSM. Mohan Kumar */ 17044b43516aSM. Mohan Kumar inode = v9fs_get_inode(dir->i_sb, mode); 17054b43516aSM. Mohan Kumar if (IS_ERR(inode)) { 17064b43516aSM. Mohan Kumar err = PTR_ERR(inode); 17074b43516aSM. Mohan Kumar goto error; 17084b43516aSM. Mohan Kumar } 17094b43516aSM. Mohan Kumar dentry->d_op = &v9fs_dentry_operations; 17104b43516aSM. Mohan Kumar d_instantiate(dentry, inode); 17114b43516aSM. Mohan Kumar } 17124b43516aSM. Mohan Kumar 17134b43516aSM. Mohan Kumar error: 17144b43516aSM. Mohan Kumar if (fid) 17154b43516aSM. Mohan Kumar p9_client_clunk(fid); 17164b43516aSM. Mohan Kumar return err; 17174b43516aSM. Mohan Kumar } 17184b43516aSM. Mohan Kumar 17199b6533c9SSripathi Kodi static const struct inode_operations v9fs_dir_inode_operations_dotu = { 17209b6533c9SSripathi Kodi .create = v9fs_vfs_create, 17219b6533c9SSripathi Kodi .lookup = v9fs_vfs_lookup, 17229b6533c9SSripathi Kodi .symlink = v9fs_vfs_symlink, 172350cc42ffSVenkateswararao Jujjuri (JV) .link = v9fs_vfs_link, 17249b6533c9SSripathi Kodi .unlink = v9fs_vfs_unlink, 17259b6533c9SSripathi Kodi .mkdir = v9fs_vfs_mkdir, 17269b6533c9SSripathi Kodi .rmdir = v9fs_vfs_rmdir, 17274b43516aSM. Mohan Kumar .mknod = v9fs_vfs_mknod_dotl, 17289b6533c9SSripathi Kodi .rename = v9fs_vfs_rename, 17299b6533c9SSripathi Kodi .getattr = v9fs_vfs_getattr, 17309b6533c9SSripathi Kodi .setattr = v9fs_vfs_setattr, 17319b6533c9SSripathi Kodi }; 17329b6533c9SSripathi Kodi 17339b6533c9SSripathi Kodi static const struct inode_operations v9fs_dir_inode_operations_dotl = { 17342bad8471SEric Van Hensbergen .create = v9fs_vfs_create, 17352bad8471SEric Van Hensbergen .lookup = v9fs_vfs_lookup, 173650cc42ffSVenkateswararao Jujjuri (JV) .link = v9fs_vfs_link_dotl, 173750cc42ffSVenkateswararao Jujjuri (JV) .symlink = v9fs_vfs_symlink_dotl, 17382bad8471SEric Van Hensbergen .unlink = v9fs_vfs_unlink, 17392bad8471SEric Van Hensbergen .mkdir = v9fs_vfs_mkdir, 17402bad8471SEric Van Hensbergen .rmdir = v9fs_vfs_rmdir, 17414b43516aSM. Mohan Kumar .mknod = v9fs_vfs_mknod_dotl, 17422bad8471SEric Van Hensbergen .rename = v9fs_vfs_rename, 1743f0853122SSripathi Kodi .getattr = v9fs_vfs_getattr_dotl, 174487d7845aSSripathi Kodi .setattr = v9fs_vfs_setattr_dotl, 17452bad8471SEric Van Hensbergen }; 17462bad8471SEric Van Hensbergen 1747754661f1SArjan van de Ven static const struct inode_operations v9fs_dir_inode_operations = { 1748b501611aSEric Van Hensbergen .create = v9fs_vfs_create, 1749b501611aSEric Van Hensbergen .lookup = v9fs_vfs_lookup, 1750b501611aSEric Van Hensbergen .unlink = v9fs_vfs_unlink, 1751b501611aSEric Van Hensbergen .mkdir = v9fs_vfs_mkdir, 1752b501611aSEric Van Hensbergen .rmdir = v9fs_vfs_rmdir, 1753b501611aSEric Van Hensbergen .mknod = v9fs_vfs_mknod, 1754b501611aSEric Van Hensbergen .rename = v9fs_vfs_rename, 1755b501611aSEric Van Hensbergen .getattr = v9fs_vfs_getattr, 1756b501611aSEric Van Hensbergen .setattr = v9fs_vfs_setattr, 1757b501611aSEric Van Hensbergen }; 1758b501611aSEric Van Hensbergen 1759754661f1SArjan van de Ven static const struct inode_operations v9fs_file_inode_operations = { 17602bad8471SEric Van Hensbergen .getattr = v9fs_vfs_getattr, 17612bad8471SEric Van Hensbergen .setattr = v9fs_vfs_setattr, 17622bad8471SEric Van Hensbergen }; 17632bad8471SEric Van Hensbergen 17649b6533c9SSripathi Kodi static const struct inode_operations v9fs_file_inode_operations_dotl = { 1765f0853122SSripathi Kodi .getattr = v9fs_vfs_getattr_dotl, 176687d7845aSSripathi Kodi .setattr = v9fs_vfs_setattr_dotl, 17679b6533c9SSripathi Kodi }; 17689b6533c9SSripathi Kodi 1769754661f1SArjan van de Ven static const struct inode_operations v9fs_symlink_inode_operations = { 1770204f2f0eSAl Viro .readlink = generic_readlink, 17712bad8471SEric Van Hensbergen .follow_link = v9fs_vfs_follow_link, 17722bad8471SEric Van Hensbergen .put_link = v9fs_vfs_put_link, 17732bad8471SEric Van Hensbergen .getattr = v9fs_vfs_getattr, 17742bad8471SEric Van Hensbergen .setattr = v9fs_vfs_setattr, 17752bad8471SEric Van Hensbergen }; 17769b6533c9SSripathi Kodi 17779b6533c9SSripathi Kodi static const struct inode_operations v9fs_symlink_inode_operations_dotl = { 17789b6533c9SSripathi Kodi .readlink = generic_readlink, 17799b6533c9SSripathi Kodi .follow_link = v9fs_vfs_follow_link, 17809b6533c9SSripathi Kodi .put_link = v9fs_vfs_put_link, 1781f0853122SSripathi Kodi .getattr = v9fs_vfs_getattr_dotl, 178287d7845aSSripathi Kodi .setattr = v9fs_vfs_setattr_dotl, 17839b6533c9SSripathi Kodi }; 1784