12bad8471SEric Van Hensbergen /* 22bad8471SEric Van Hensbergen * linux/fs/9p/vfs_inode.c 32bad8471SEric Van Hensbergen * 473c592b9SEric Van Hensbergen * This file contains vfs inode ops for the 9P2000 protocol. 52bad8471SEric Van Hensbergen * 62bad8471SEric Van Hensbergen * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com> 72bad8471SEric Van Hensbergen * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> 82bad8471SEric Van Hensbergen * 92bad8471SEric Van Hensbergen * This program is free software; you can redistribute it and/or modify 1042e8c509SEric Van Hensbergen * it under the terms of the GNU General Public License version 2 1142e8c509SEric Van Hensbergen * as published by the Free Software Foundation. 122bad8471SEric Van Hensbergen * 132bad8471SEric Van Hensbergen * This program is distributed in the hope that it will be useful, 142bad8471SEric Van Hensbergen * but WITHOUT ANY WARRANTY; without even the implied warranty of 152bad8471SEric Van Hensbergen * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 162bad8471SEric Van Hensbergen * GNU General Public License for more details. 172bad8471SEric Van Hensbergen * 182bad8471SEric Van Hensbergen * You should have received a copy of the GNU General Public License 192bad8471SEric Van Hensbergen * along with this program; if not, write to: 202bad8471SEric Van Hensbergen * Free Software Foundation 212bad8471SEric Van Hensbergen * 51 Franklin Street, Fifth Floor 222bad8471SEric Van Hensbergen * Boston, MA 02111-1301 USA 232bad8471SEric Van Hensbergen * 242bad8471SEric Van Hensbergen */ 252bad8471SEric Van Hensbergen 262bad8471SEric Van Hensbergen #include <linux/module.h> 272bad8471SEric Van Hensbergen #include <linux/errno.h> 282bad8471SEric Van Hensbergen #include <linux/fs.h> 292bad8471SEric Van Hensbergen #include <linux/file.h> 302bad8471SEric Van Hensbergen #include <linux/pagemap.h> 312bad8471SEric Van Hensbergen #include <linux/stat.h> 322bad8471SEric Van Hensbergen #include <linux/string.h> 332bad8471SEric Van Hensbergen #include <linux/inet.h> 342bad8471SEric Van Hensbergen #include <linux/namei.h> 352bad8471SEric Van Hensbergen #include <linux/idr.h> 36e8edc6e0SAlexey Dobriyan #include <linux/sched.h> 375a0e3ad6STejun Heo #include <linux/slab.h> 38ebf46264SAneesh Kumar K.V #include <linux/xattr.h> 3985ff872dSAneesh Kumar K.V #include <linux/posix_acl.h> 40bd238fb4SLatchesar Ionkov #include <net/9p/9p.h> 41bd238fb4SLatchesar Ionkov #include <net/9p/client.h> 422bad8471SEric Van Hensbergen 432bad8471SEric Van Hensbergen #include "v9fs.h" 442bad8471SEric Van Hensbergen #include "v9fs_vfs.h" 452bad8471SEric Van Hensbergen #include "fid.h" 4660e78d2cSAbhishek Kulkarni #include "cache.h" 47ebf46264SAneesh Kumar K.V #include "xattr.h" 4885ff872dSAneesh Kumar K.V #include "acl.h" 492bad8471SEric Van Hensbergen 50754661f1SArjan van de Ven static const struct inode_operations v9fs_dir_inode_operations; 519b6533c9SSripathi Kodi static const struct inode_operations v9fs_dir_inode_operations_dotu; 529b6533c9SSripathi Kodi static const struct inode_operations v9fs_dir_inode_operations_dotl; 53754661f1SArjan van de Ven static const struct inode_operations v9fs_file_inode_operations; 549b6533c9SSripathi Kodi static const struct inode_operations v9fs_file_inode_operations_dotl; 55754661f1SArjan van de Ven static const struct inode_operations v9fs_symlink_inode_operations; 569b6533c9SSripathi Kodi static const struct inode_operations v9fs_symlink_inode_operations_dotl; 572bad8471SEric Van Hensbergen 582bad8471SEric Van Hensbergen /** 592bad8471SEric Van Hensbergen * unixmode2p9mode - convert unix mode bits to plan 9 602bad8471SEric Van Hensbergen * @v9ses: v9fs session information 612bad8471SEric Van Hensbergen * @mode: mode to convert 622bad8471SEric Van Hensbergen * 632bad8471SEric Van Hensbergen */ 642bad8471SEric Van Hensbergen 6573c592b9SEric Van Hensbergen static int unixmode2p9mode(struct v9fs_session_info *v9ses, int mode) 662bad8471SEric Van Hensbergen { 672bad8471SEric Van Hensbergen int res; 682bad8471SEric Van Hensbergen res = mode & 0777; 692bad8471SEric Van Hensbergen if (S_ISDIR(mode)) 70bd238fb4SLatchesar Ionkov res |= P9_DMDIR; 71dd6102fbSSripathi Kodi if (v9fs_proto_dotu(v9ses)) { 722bad8471SEric Van Hensbergen if (S_ISLNK(mode)) 73bd238fb4SLatchesar Ionkov res |= P9_DMSYMLINK; 742bad8471SEric Van Hensbergen if (v9ses->nodev == 0) { 752bad8471SEric Van Hensbergen if (S_ISSOCK(mode)) 76bd238fb4SLatchesar Ionkov res |= P9_DMSOCKET; 772bad8471SEric Van Hensbergen if (S_ISFIFO(mode)) 78bd238fb4SLatchesar Ionkov res |= P9_DMNAMEDPIPE; 792bad8471SEric Van Hensbergen if (S_ISBLK(mode)) 80bd238fb4SLatchesar Ionkov res |= P9_DMDEVICE; 812bad8471SEric Van Hensbergen if (S_ISCHR(mode)) 82bd238fb4SLatchesar Ionkov res |= P9_DMDEVICE; 832bad8471SEric Van Hensbergen } 842bad8471SEric Van Hensbergen 852bad8471SEric Van Hensbergen if ((mode & S_ISUID) == S_ISUID) 86bd238fb4SLatchesar Ionkov res |= P9_DMSETUID; 872bad8471SEric Van Hensbergen if ((mode & S_ISGID) == S_ISGID) 88bd238fb4SLatchesar Ionkov res |= P9_DMSETGID; 89d199d652SAnthony Liguori if ((mode & S_ISVTX) == S_ISVTX) 90d199d652SAnthony Liguori res |= P9_DMSETVTX; 91bd238fb4SLatchesar Ionkov if ((mode & P9_DMLINK)) 92bd238fb4SLatchesar Ionkov res |= P9_DMLINK; 932bad8471SEric Van Hensbergen } 942bad8471SEric Van Hensbergen 952bad8471SEric Van Hensbergen return res; 962bad8471SEric Van Hensbergen } 972bad8471SEric Van Hensbergen 982bad8471SEric Van Hensbergen /** 992bad8471SEric Van Hensbergen * p9mode2unixmode- convert plan9 mode bits to unix mode bits 1002bad8471SEric Van Hensbergen * @v9ses: v9fs session information 1012bad8471SEric Van Hensbergen * @mode: mode to convert 1022bad8471SEric Van Hensbergen * 1032bad8471SEric Van Hensbergen */ 1042bad8471SEric Van Hensbergen 10573c592b9SEric Van Hensbergen static int p9mode2unixmode(struct v9fs_session_info *v9ses, int mode) 1062bad8471SEric Van Hensbergen { 1072bad8471SEric Van Hensbergen int res; 1082bad8471SEric Van Hensbergen 1092bad8471SEric Van Hensbergen res = mode & 0777; 1102bad8471SEric Van Hensbergen 111bd238fb4SLatchesar Ionkov if ((mode & P9_DMDIR) == P9_DMDIR) 1122bad8471SEric Van Hensbergen res |= S_IFDIR; 113dd6102fbSSripathi Kodi else if ((mode & P9_DMSYMLINK) && (v9fs_proto_dotu(v9ses))) 1142bad8471SEric Van Hensbergen res |= S_IFLNK; 115dd6102fbSSripathi Kodi else if ((mode & P9_DMSOCKET) && (v9fs_proto_dotu(v9ses)) 1162bad8471SEric Van Hensbergen && (v9ses->nodev == 0)) 1172bad8471SEric Van Hensbergen res |= S_IFSOCK; 118dd6102fbSSripathi Kodi else if ((mode & P9_DMNAMEDPIPE) && (v9fs_proto_dotu(v9ses)) 1192bad8471SEric Van Hensbergen && (v9ses->nodev == 0)) 1202bad8471SEric Van Hensbergen res |= S_IFIFO; 121dd6102fbSSripathi Kodi else if ((mode & P9_DMDEVICE) && (v9fs_proto_dotu(v9ses)) 1222bad8471SEric Van Hensbergen && (v9ses->nodev == 0)) 1232bad8471SEric Van Hensbergen res |= S_IFBLK; 1242bad8471SEric Van Hensbergen else 1252bad8471SEric Van Hensbergen res |= S_IFREG; 1262bad8471SEric Van Hensbergen 127dd6102fbSSripathi Kodi if (v9fs_proto_dotu(v9ses)) { 128bd238fb4SLatchesar Ionkov if ((mode & P9_DMSETUID) == P9_DMSETUID) 1292bad8471SEric Van Hensbergen res |= S_ISUID; 1302bad8471SEric Van Hensbergen 131bd238fb4SLatchesar Ionkov if ((mode & P9_DMSETGID) == P9_DMSETGID) 1322bad8471SEric Van Hensbergen res |= S_ISGID; 133d199d652SAnthony Liguori 134d199d652SAnthony Liguori if ((mode & P9_DMSETVTX) == P9_DMSETVTX) 135d199d652SAnthony Liguori res |= S_ISVTX; 1362bad8471SEric Van Hensbergen } 1372bad8471SEric Van Hensbergen 1382bad8471SEric Van Hensbergen return res; 1392bad8471SEric Van Hensbergen } 1402bad8471SEric Van Hensbergen 141ee443996SEric Van Hensbergen /** 142ee443996SEric Van Hensbergen * v9fs_uflags2omode- convert posix open flags to plan 9 mode bits 143ee443996SEric Van Hensbergen * @uflags: flags to convert 1442e4bef41SEric Van Hensbergen * @extended: if .u extensions are active 145ee443996SEric Van Hensbergen */ 146ee443996SEric Van Hensbergen 1472e4bef41SEric Van Hensbergen int v9fs_uflags2omode(int uflags, int extended) 1486a3124a3SLatchesar Ionkov { 1496a3124a3SLatchesar Ionkov int ret; 1506a3124a3SLatchesar Ionkov 1516a3124a3SLatchesar Ionkov ret = 0; 1526a3124a3SLatchesar Ionkov switch (uflags&3) { 1536a3124a3SLatchesar Ionkov default: 1546a3124a3SLatchesar Ionkov case O_RDONLY: 155bd238fb4SLatchesar Ionkov ret = P9_OREAD; 1566a3124a3SLatchesar Ionkov break; 1576a3124a3SLatchesar Ionkov 1586a3124a3SLatchesar Ionkov case O_WRONLY: 159bd238fb4SLatchesar Ionkov ret = P9_OWRITE; 1606a3124a3SLatchesar Ionkov break; 1616a3124a3SLatchesar Ionkov 1626a3124a3SLatchesar Ionkov case O_RDWR: 163bd238fb4SLatchesar Ionkov ret = P9_ORDWR; 1646a3124a3SLatchesar Ionkov break; 1656a3124a3SLatchesar Ionkov } 1666a3124a3SLatchesar Ionkov 1676a3124a3SLatchesar Ionkov if (uflags & O_TRUNC) 168bd238fb4SLatchesar Ionkov ret |= P9_OTRUNC; 1696a3124a3SLatchesar Ionkov 1702e4bef41SEric Van Hensbergen if (extended) { 1712e4bef41SEric Van Hensbergen if (uflags & O_EXCL) 1722e4bef41SEric Van Hensbergen ret |= P9_OEXCL; 1732e4bef41SEric Van Hensbergen 1746a3124a3SLatchesar Ionkov if (uflags & O_APPEND) 175bd238fb4SLatchesar Ionkov ret |= P9_OAPPEND; 1762e4bef41SEric Van Hensbergen } 1776a3124a3SLatchesar Ionkov 1786a3124a3SLatchesar Ionkov return ret; 1796a3124a3SLatchesar Ionkov } 1806a3124a3SLatchesar Ionkov 1812bad8471SEric Van Hensbergen /** 182531b1094SLatchesar Ionkov * v9fs_blank_wstat - helper function to setup a 9P stat structure 183531b1094SLatchesar Ionkov * @wstat: structure to initialize 1842bad8471SEric Van Hensbergen * 1852bad8471SEric Van Hensbergen */ 1862bad8471SEric Van Hensbergen 1877a4439c4SM. Mohan Kumar void 188bd238fb4SLatchesar Ionkov v9fs_blank_wstat(struct p9_wstat *wstat) 1892bad8471SEric Van Hensbergen { 190531b1094SLatchesar Ionkov wstat->type = ~0; 191531b1094SLatchesar Ionkov wstat->dev = ~0; 192531b1094SLatchesar Ionkov wstat->qid.type = ~0; 193531b1094SLatchesar Ionkov wstat->qid.version = ~0; 194531b1094SLatchesar Ionkov *((long long *)&wstat->qid.path) = ~0; 195531b1094SLatchesar Ionkov wstat->mode = ~0; 196531b1094SLatchesar Ionkov wstat->atime = ~0; 197531b1094SLatchesar Ionkov wstat->mtime = ~0; 198531b1094SLatchesar Ionkov wstat->length = ~0; 199531b1094SLatchesar Ionkov wstat->name = NULL; 200531b1094SLatchesar Ionkov wstat->uid = NULL; 201531b1094SLatchesar Ionkov wstat->gid = NULL; 202531b1094SLatchesar Ionkov wstat->muid = NULL; 203531b1094SLatchesar Ionkov wstat->n_uid = ~0; 204531b1094SLatchesar Ionkov wstat->n_gid = ~0; 205531b1094SLatchesar Ionkov wstat->n_muid = ~0; 206531b1094SLatchesar Ionkov wstat->extension = NULL; 2072bad8471SEric Van Hensbergen } 2082bad8471SEric Van Hensbergen 20960e78d2cSAbhishek Kulkarni #ifdef CONFIG_9P_FSCACHE 21060e78d2cSAbhishek Kulkarni /** 21160e78d2cSAbhishek Kulkarni * v9fs_alloc_inode - helper function to allocate an inode 21260e78d2cSAbhishek Kulkarni * This callback is executed before setting up the inode so that we 21360e78d2cSAbhishek Kulkarni * can associate a vcookie with each inode. 21460e78d2cSAbhishek Kulkarni * 21560e78d2cSAbhishek Kulkarni */ 21660e78d2cSAbhishek Kulkarni 21760e78d2cSAbhishek Kulkarni struct inode *v9fs_alloc_inode(struct super_block *sb) 21860e78d2cSAbhishek Kulkarni { 21960e78d2cSAbhishek Kulkarni struct v9fs_cookie *vcookie; 22060e78d2cSAbhishek Kulkarni vcookie = (struct v9fs_cookie *)kmem_cache_alloc(vcookie_cache, 22160e78d2cSAbhishek Kulkarni GFP_KERNEL); 22260e78d2cSAbhishek Kulkarni if (!vcookie) 22360e78d2cSAbhishek Kulkarni return NULL; 22460e78d2cSAbhishek Kulkarni 22560e78d2cSAbhishek Kulkarni vcookie->fscache = NULL; 22660e78d2cSAbhishek Kulkarni vcookie->qid = NULL; 22760e78d2cSAbhishek Kulkarni spin_lock_init(&vcookie->lock); 22860e78d2cSAbhishek Kulkarni return &vcookie->inode; 22960e78d2cSAbhishek Kulkarni } 23060e78d2cSAbhishek Kulkarni 23160e78d2cSAbhishek Kulkarni /** 23260e78d2cSAbhishek Kulkarni * v9fs_destroy_inode - destroy an inode 23360e78d2cSAbhishek Kulkarni * 23460e78d2cSAbhishek Kulkarni */ 23560e78d2cSAbhishek Kulkarni 23660e78d2cSAbhishek Kulkarni void v9fs_destroy_inode(struct inode *inode) 23760e78d2cSAbhishek Kulkarni { 23860e78d2cSAbhishek Kulkarni kmem_cache_free(vcookie_cache, v9fs_inode2cookie(inode)); 23960e78d2cSAbhishek Kulkarni } 24060e78d2cSAbhishek Kulkarni #endif 24160e78d2cSAbhishek Kulkarni 2422bad8471SEric Van Hensbergen /** 24309d34ee5SEric Van Hensbergen * v9fs_get_fsgid_for_create - Helper function to get the gid for creating a 24409d34ee5SEric Van Hensbergen * new file system object. This checks the S_ISGID to determine the owning 24509d34ee5SEric Van Hensbergen * group of the new file system object. 24609d34ee5SEric Van Hensbergen */ 24709d34ee5SEric Van Hensbergen 24809d34ee5SEric Van Hensbergen static gid_t v9fs_get_fsgid_for_create(struct inode *dir_inode) 24909d34ee5SEric Van Hensbergen { 25009d34ee5SEric Van Hensbergen BUG_ON(dir_inode == NULL); 25109d34ee5SEric Van Hensbergen 25209d34ee5SEric Van Hensbergen if (dir_inode->i_mode & S_ISGID) { 25309d34ee5SEric Van Hensbergen /* set_gid bit is set.*/ 25409d34ee5SEric Van Hensbergen return dir_inode->i_gid; 25509d34ee5SEric Van Hensbergen } 25609d34ee5SEric Van Hensbergen return current_fsgid(); 25709d34ee5SEric Van Hensbergen } 25809d34ee5SEric Van Hensbergen 25909d34ee5SEric Van Hensbergen /** 26009d34ee5SEric Van Hensbergen * v9fs_dentry_from_dir_inode - helper function to get the dentry from 26109d34ee5SEric Van Hensbergen * dir inode. 26209d34ee5SEric Van Hensbergen * 26309d34ee5SEric Van Hensbergen */ 26409d34ee5SEric Van Hensbergen 265ea137533SEric Van Hensbergen static struct dentry *v9fs_dentry_from_dir_inode(struct inode *inode) 26609d34ee5SEric Van Hensbergen { 26709d34ee5SEric Van Hensbergen struct dentry *dentry; 26809d34ee5SEric Van Hensbergen 26909d34ee5SEric Van Hensbergen spin_lock(&dcache_lock); 27009d34ee5SEric Van Hensbergen /* Directory should have only one entry. */ 27109d34ee5SEric Van Hensbergen BUG_ON(S_ISDIR(inode->i_mode) && !list_is_singular(&inode->i_dentry)); 27209d34ee5SEric Van Hensbergen dentry = list_entry(inode->i_dentry.next, struct dentry, d_alias); 27309d34ee5SEric Van Hensbergen spin_unlock(&dcache_lock); 27409d34ee5SEric Van Hensbergen return dentry; 27509d34ee5SEric Van Hensbergen } 27609d34ee5SEric Van Hensbergen 27709d34ee5SEric Van Hensbergen /** 2782bad8471SEric Van Hensbergen * v9fs_get_inode - helper function to setup an inode 2792bad8471SEric Van Hensbergen * @sb: superblock 2802bad8471SEric Van Hensbergen * @mode: mode to setup inode with 2812bad8471SEric Van Hensbergen * 2822bad8471SEric Van Hensbergen */ 2832bad8471SEric Van Hensbergen 2842bad8471SEric Van Hensbergen struct inode *v9fs_get_inode(struct super_block *sb, int mode) 2852bad8471SEric Van Hensbergen { 2862bb54115SAbhishek Kulkarni int err; 2876a3124a3SLatchesar Ionkov struct inode *inode; 288b501611aSEric Van Hensbergen struct v9fs_session_info *v9ses = sb->s_fs_info; 2892bad8471SEric Van Hensbergen 290bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "super block: %p mode: %o\n", sb, mode); 2912bad8471SEric Van Hensbergen 2922bad8471SEric Van Hensbergen inode = new_inode(sb); 2932bb54115SAbhishek Kulkarni if (!inode) { 2942bb54115SAbhishek Kulkarni P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n"); 29548559b4cSAbhishek Kulkarni return ERR_PTR(-ENOMEM); 2962bb54115SAbhishek Kulkarni } 2972bb54115SAbhishek Kulkarni 298217f206dSDmitry Monakhov inode_init_owner(inode, NULL, mode); 2992bad8471SEric Van Hensbergen inode->i_blocks = 0; 3002bad8471SEric Van Hensbergen inode->i_rdev = 0; 3012bad8471SEric Van Hensbergen inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; 302147b31cfSEric Van Hensbergen inode->i_mapping->a_ops = &v9fs_addr_operations; 3032bad8471SEric Van Hensbergen 3042bad8471SEric Van Hensbergen switch (mode & S_IFMT) { 3052bad8471SEric Van Hensbergen case S_IFIFO: 3062bad8471SEric Van Hensbergen case S_IFBLK: 3072bad8471SEric Van Hensbergen case S_IFCHR: 3082bad8471SEric Van Hensbergen case S_IFSOCK: 3094b43516aSM. Mohan Kumar if (v9fs_proto_dotl(v9ses)) { 3104b43516aSM. Mohan Kumar inode->i_op = &v9fs_file_inode_operations_dotl; 3114b43516aSM. Mohan Kumar inode->i_fop = &v9fs_file_operations_dotl; 3124b43516aSM. Mohan Kumar } else if (v9fs_proto_dotu(v9ses)) { 3134b43516aSM. Mohan Kumar inode->i_op = &v9fs_file_inode_operations; 3144b43516aSM. Mohan Kumar inode->i_fop = &v9fs_file_operations; 3154b43516aSM. Mohan Kumar } else { 316bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_ERROR, 317bd238fb4SLatchesar Ionkov "special files without extended mode\n"); 3182bb54115SAbhishek Kulkarni err = -EINVAL; 3192bb54115SAbhishek Kulkarni goto error; 320b501611aSEric Van Hensbergen } 3212bb54115SAbhishek Kulkarni init_special_inode(inode, inode->i_mode, inode->i_rdev); 3225d58bec5SEric Van Hensbergen break; 3232bad8471SEric Van Hensbergen case S_IFREG: 3249b6533c9SSripathi Kodi if (v9fs_proto_dotl(v9ses)) { 3259b6533c9SSripathi Kodi inode->i_op = &v9fs_file_inode_operations_dotl; 3269b6533c9SSripathi Kodi inode->i_fop = &v9fs_file_operations_dotl; 3279b6533c9SSripathi Kodi } else { 3282bad8471SEric Van Hensbergen inode->i_op = &v9fs_file_inode_operations; 3292bad8471SEric Van Hensbergen inode->i_fop = &v9fs_file_operations; 3309b6533c9SSripathi Kodi } 3319b6533c9SSripathi Kodi 3322bad8471SEric Van Hensbergen break; 3339b6533c9SSripathi Kodi 334b501611aSEric Van Hensbergen case S_IFLNK: 3359b6533c9SSripathi Kodi if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) { 3369b6533c9SSripathi Kodi P9_DPRINTK(P9_DEBUG_ERROR, "extended modes used with " 3379b6533c9SSripathi Kodi "legacy protocol.\n"); 3382bb54115SAbhishek Kulkarni err = -EINVAL; 3392bb54115SAbhishek Kulkarni goto error; 340b501611aSEric Van Hensbergen } 3419b6533c9SSripathi Kodi 3429b6533c9SSripathi Kodi if (v9fs_proto_dotl(v9ses)) 3439b6533c9SSripathi Kodi inode->i_op = &v9fs_symlink_inode_operations_dotl; 3449b6533c9SSripathi Kodi else 345b501611aSEric Van Hensbergen inode->i_op = &v9fs_symlink_inode_operations; 3469b6533c9SSripathi Kodi 347b501611aSEric Van Hensbergen break; 3482bad8471SEric Van Hensbergen case S_IFDIR: 349d8c76e6fSDave Hansen inc_nlink(inode); 3509b6533c9SSripathi Kodi if (v9fs_proto_dotl(v9ses)) 3519b6533c9SSripathi Kodi inode->i_op = &v9fs_dir_inode_operations_dotl; 3529b6533c9SSripathi Kodi else if (v9fs_proto_dotu(v9ses)) 3539b6533c9SSripathi Kodi inode->i_op = &v9fs_dir_inode_operations_dotu; 354b501611aSEric Van Hensbergen else 3552bad8471SEric Van Hensbergen inode->i_op = &v9fs_dir_inode_operations; 3569b6533c9SSripathi Kodi 3579b6533c9SSripathi Kodi if (v9fs_proto_dotl(v9ses)) 3589b6533c9SSripathi Kodi inode->i_fop = &v9fs_dir_operations_dotl; 3599b6533c9SSripathi Kodi else 3602bad8471SEric Van Hensbergen inode->i_fop = &v9fs_dir_operations; 3619b6533c9SSripathi Kodi 3622bad8471SEric Van Hensbergen break; 3632bad8471SEric Van Hensbergen default: 3642bb54115SAbhishek Kulkarni P9_DPRINTK(P9_DEBUG_ERROR, "BAD mode 0x%x S_IFMT 0x%x\n", 3652bad8471SEric Van Hensbergen mode, mode & S_IFMT); 3662bb54115SAbhishek Kulkarni err = -EINVAL; 3672bb54115SAbhishek Kulkarni goto error; 3682bad8471SEric Van Hensbergen } 3692bb54115SAbhishek Kulkarni 3702bad8471SEric Van Hensbergen return inode; 3712bb54115SAbhishek Kulkarni 3722bb54115SAbhishek Kulkarni error: 3732bb54115SAbhishek Kulkarni iput(inode); 3742bb54115SAbhishek Kulkarni return ERR_PTR(err); 3752bad8471SEric Van Hensbergen } 3762bad8471SEric Van Hensbergen 377bd238fb4SLatchesar Ionkov /* 3786a3124a3SLatchesar Ionkov static struct v9fs_fid* 3796a3124a3SLatchesar Ionkov v9fs_clone_walk(struct v9fs_session_info *v9ses, u32 fid, struct dentry *dentry) 3806a3124a3SLatchesar Ionkov { 3816a3124a3SLatchesar Ionkov int err; 382736c4b85SMika Kukkonen int nfid; 3836a3124a3SLatchesar Ionkov struct v9fs_fid *ret; 3846a3124a3SLatchesar Ionkov struct v9fs_fcall *fcall; 3850b8dd177SLatchesar Ionkov 3866a3124a3SLatchesar Ionkov nfid = v9fs_get_idpool(&v9ses->fidpool); 3876a3124a3SLatchesar Ionkov if (nfid < 0) { 3880b8dd177SLatchesar Ionkov eprintk(KERN_WARNING, "no free fids available\n"); 389731805b4SLatchesar Ionkov return ERR_PTR(-ENOSPC); 3900b8dd177SLatchesar Ionkov } 3910b8dd177SLatchesar Ionkov 3926a3124a3SLatchesar Ionkov err = v9fs_t_walk(v9ses, fid, nfid, (char *) dentry->d_name.name, 3936a3124a3SLatchesar Ionkov &fcall); 3946a3124a3SLatchesar Ionkov 3956a3124a3SLatchesar Ionkov if (err < 0) { 39641e5a6acSLatchesar Ionkov if (fcall && fcall->id == RWALK) 39741e5a6acSLatchesar Ionkov goto clunk_fid; 39841e5a6acSLatchesar Ionkov 3996a3124a3SLatchesar Ionkov PRINT_FCALL_ERROR("walk error", fcall); 4006a3124a3SLatchesar Ionkov v9fs_put_idpool(nfid, &v9ses->fidpool); 4016a3124a3SLatchesar Ionkov goto error; 4020b8dd177SLatchesar Ionkov } 4036a3124a3SLatchesar Ionkov 4043cf6429aSLatchesar Ionkov kfree(fcall); 4053cf6429aSLatchesar Ionkov fcall = NULL; 4066a3124a3SLatchesar Ionkov ret = v9fs_fid_create(v9ses, nfid); 4076a3124a3SLatchesar Ionkov if (!ret) { 4086a3124a3SLatchesar Ionkov err = -ENOMEM; 4096a3124a3SLatchesar Ionkov goto clunk_fid; 4100b8dd177SLatchesar Ionkov } 4112bad8471SEric Van Hensbergen 4126a3124a3SLatchesar Ionkov err = v9fs_fid_insert(ret, dentry); 4136a3124a3SLatchesar Ionkov if (err < 0) { 4146a3124a3SLatchesar Ionkov v9fs_fid_destroy(ret); 4156a3124a3SLatchesar Ionkov goto clunk_fid; 4166a3124a3SLatchesar Ionkov } 4172bad8471SEric Van Hensbergen 4186a3124a3SLatchesar Ionkov return ret; 4196a3124a3SLatchesar Ionkov 4206a3124a3SLatchesar Ionkov clunk_fid: 4216a3124a3SLatchesar Ionkov v9fs_t_clunk(v9ses, nfid); 4226a3124a3SLatchesar Ionkov 4236a3124a3SLatchesar Ionkov error: 4246a3124a3SLatchesar Ionkov kfree(fcall); 4256a3124a3SLatchesar Ionkov return ERR_PTR(err); 4266a3124a3SLatchesar Ionkov } 427bd238fb4SLatchesar Ionkov */ 4286a3124a3SLatchesar Ionkov 42960e78d2cSAbhishek Kulkarni 43060e78d2cSAbhishek Kulkarni /** 43160e78d2cSAbhishek Kulkarni * v9fs_clear_inode - release an inode 43260e78d2cSAbhishek Kulkarni * @inode: inode to release 43360e78d2cSAbhishek Kulkarni * 43460e78d2cSAbhishek Kulkarni */ 435b57922d9SAl Viro void v9fs_evict_inode(struct inode *inode) 43660e78d2cSAbhishek Kulkarni { 437b57922d9SAl Viro truncate_inode_pages(inode->i_mapping, 0); 438b57922d9SAl Viro end_writeback(inode); 43960e78d2cSAbhishek Kulkarni filemap_fdatawrite(inode->i_mapping); 44060e78d2cSAbhishek Kulkarni 44160e78d2cSAbhishek Kulkarni #ifdef CONFIG_9P_FSCACHE 44260e78d2cSAbhishek Kulkarni v9fs_cache_inode_put_cookie(inode); 44360e78d2cSAbhishek Kulkarni #endif 44460e78d2cSAbhishek Kulkarni } 44560e78d2cSAbhishek Kulkarni 4465174fdabSLatchesar Ionkov static struct inode * 447f0853122SSripathi Kodi v9fs_inode(struct v9fs_session_info *v9ses, struct p9_fid *fid, 4486a3124a3SLatchesar Ionkov struct super_block *sb) 4496a3124a3SLatchesar Ionkov { 4506a3124a3SLatchesar Ionkov int err, umode; 451f0853122SSripathi Kodi struct inode *ret = NULL; 45251a87c55SEric Van Hensbergen struct p9_wstat *st; 4536a3124a3SLatchesar Ionkov 454bd238fb4SLatchesar Ionkov st = p9_client_stat(fid); 45502bc3567SAbhishek Kulkarni if (IS_ERR(st)) 45602bc3567SAbhishek Kulkarni return ERR_CAST(st); 4572bad8471SEric Van Hensbergen 458bd238fb4SLatchesar Ionkov umode = p9mode2unixmode(v9ses, st->mode); 4596a3124a3SLatchesar Ionkov ret = v9fs_get_inode(sb, umode); 4606a3124a3SLatchesar Ionkov if (IS_ERR(ret)) { 4616a3124a3SLatchesar Ionkov err = PTR_ERR(ret); 4626a3124a3SLatchesar Ionkov goto error; 4632bad8471SEric Van Hensbergen } 4642bad8471SEric Van Hensbergen 465bd238fb4SLatchesar Ionkov v9fs_stat2inode(st, ret, sb); 466bd238fb4SLatchesar Ionkov ret->i_ino = v9fs_qid2ino(&st->qid); 46760e78d2cSAbhishek Kulkarni 46860e78d2cSAbhishek Kulkarni #ifdef CONFIG_9P_FSCACHE 46960e78d2cSAbhishek Kulkarni v9fs_vcookie_set_qid(ret, &st->qid); 47060e78d2cSAbhishek Kulkarni v9fs_cache_inode_get_cookie(ret); 47160e78d2cSAbhishek Kulkarni #endif 47202bc3567SAbhishek Kulkarni p9stat_free(st); 473bd238fb4SLatchesar Ionkov kfree(st); 4746a3124a3SLatchesar Ionkov return ret; 4756a3124a3SLatchesar Ionkov error: 47602bc3567SAbhishek Kulkarni p9stat_free(st); 477bd238fb4SLatchesar Ionkov kfree(st); 4786a3124a3SLatchesar Ionkov return ERR_PTR(err); 4792bad8471SEric Van Hensbergen } 4802bad8471SEric Van Hensbergen 481f0853122SSripathi Kodi static struct inode * 482f0853122SSripathi Kodi v9fs_inode_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid, 483f0853122SSripathi Kodi struct super_block *sb) 484f0853122SSripathi Kodi { 485f0853122SSripathi Kodi struct inode *ret = NULL; 486f0853122SSripathi Kodi int err; 487f0853122SSripathi Kodi struct p9_stat_dotl *st; 488f0853122SSripathi Kodi 489f0853122SSripathi Kodi st = p9_client_getattr_dotl(fid, P9_STATS_BASIC); 490f0853122SSripathi Kodi if (IS_ERR(st)) 491f0853122SSripathi Kodi return ERR_CAST(st); 492f0853122SSripathi Kodi 493f0853122SSripathi Kodi ret = v9fs_get_inode(sb, st->st_mode); 494f0853122SSripathi Kodi if (IS_ERR(ret)) { 495f0853122SSripathi Kodi err = PTR_ERR(ret); 496f0853122SSripathi Kodi goto error; 497f0853122SSripathi Kodi } 498f0853122SSripathi Kodi 499f0853122SSripathi Kodi v9fs_stat2inode_dotl(st, ret); 500f0853122SSripathi Kodi ret->i_ino = v9fs_qid2ino(&st->qid); 501f0853122SSripathi Kodi #ifdef CONFIG_9P_FSCACHE 502f0853122SSripathi Kodi v9fs_vcookie_set_qid(ret, &st->qid); 503f0853122SSripathi Kodi v9fs_cache_inode_get_cookie(ret); 504f0853122SSripathi Kodi #endif 50585ff872dSAneesh Kumar K.V err = v9fs_get_acl(ret, fid); 50685ff872dSAneesh Kumar K.V if (err) { 50785ff872dSAneesh Kumar K.V iput(ret); 50885ff872dSAneesh Kumar K.V goto error; 50985ff872dSAneesh Kumar K.V } 510f0853122SSripathi Kodi kfree(st); 511f0853122SSripathi Kodi return ret; 512f0853122SSripathi Kodi error: 513f0853122SSripathi Kodi kfree(st); 514f0853122SSripathi Kodi return ERR_PTR(err); 515f0853122SSripathi Kodi } 516f0853122SSripathi Kodi 517f0853122SSripathi Kodi /** 518f0853122SSripathi Kodi * v9fs_inode_from_fid - Helper routine to populate an inode by 519f0853122SSripathi Kodi * issuing a attribute request 520f0853122SSripathi Kodi * @v9ses: session information 521f0853122SSripathi Kodi * @fid: fid to issue attribute request for 522f0853122SSripathi Kodi * @sb: superblock on which to create inode 523f0853122SSripathi Kodi * 524f0853122SSripathi Kodi */ 525f0853122SSripathi Kodi static inline struct inode * 526f0853122SSripathi Kodi v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid, 527f0853122SSripathi Kodi struct super_block *sb) 528f0853122SSripathi Kodi { 529f0853122SSripathi Kodi if (v9fs_proto_dotl(v9ses)) 530f0853122SSripathi Kodi return v9fs_inode_dotl(v9ses, fid, sb); 531f0853122SSripathi Kodi else 532f0853122SSripathi Kodi return v9fs_inode(v9ses, fid, sb); 533f0853122SSripathi Kodi } 534f0853122SSripathi Kodi 5352bad8471SEric Van Hensbergen /** 5362bad8471SEric Van Hensbergen * v9fs_remove - helper function to remove files and directories 53773c592b9SEric Van Hensbergen * @dir: directory inode that is being deleted 53873c592b9SEric Van Hensbergen * @file: dentry that is being deleted 53973c592b9SEric Van Hensbergen * @rmdir: removing a directory 5402bad8471SEric Van Hensbergen * 5412bad8471SEric Van Hensbergen */ 5422bad8471SEric Van Hensbergen 5432bad8471SEric Van Hensbergen static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir) 5442bad8471SEric Van Hensbergen { 545d994f405SAneesh Kumar K.V int retval; 546bd238fb4SLatchesar Ionkov struct inode *file_inode; 547bd238fb4SLatchesar Ionkov struct p9_fid *v9fid; 5482bad8471SEric Van Hensbergen 549bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "inode: %p dentry: %p rmdir: %d\n", dir, file, 5502bad8471SEric Van Hensbergen rmdir); 5512bad8471SEric Van Hensbergen 5522bad8471SEric Van Hensbergen file_inode = file->d_inode; 553c959df9fSLatchesar Ionkov v9fid = v9fs_fid_clone(file); 554da977b2cSEric Van Hensbergen if (IS_ERR(v9fid)) 555da977b2cSEric Van Hensbergen return PTR_ERR(v9fid); 5562bad8471SEric Van Hensbergen 557d994f405SAneesh Kumar K.V retval = p9_client_remove(v9fid); 558d994f405SAneesh Kumar K.V if (!retval) 559d994f405SAneesh Kumar K.V drop_nlink(file_inode); 560d994f405SAneesh Kumar K.V return retval; 5612bad8471SEric Van Hensbergen } 5622bad8471SEric Van Hensbergen 5636a3124a3SLatchesar Ionkov static int 5646a3124a3SLatchesar Ionkov v9fs_open_created(struct inode *inode, struct file *file) 5656a3124a3SLatchesar Ionkov { 5666a3124a3SLatchesar Ionkov return 0; 5676a3124a3SLatchesar Ionkov } 5686a3124a3SLatchesar Ionkov 569bd238fb4SLatchesar Ionkov 570bd238fb4SLatchesar Ionkov /** 571bd238fb4SLatchesar Ionkov * v9fs_create - Create a file 572ee443996SEric Van Hensbergen * @v9ses: session information 573ee443996SEric Van Hensbergen * @dir: directory that dentry is being created in 574bd238fb4SLatchesar Ionkov * @dentry: dentry that is being created 5750e15597eSAbhishek Kulkarni * @extension: 9p2000.u extension string to support devices, etc. 576bd238fb4SLatchesar Ionkov * @perm: create permissions 577bd238fb4SLatchesar Ionkov * @mode: open mode 578bd238fb4SLatchesar Ionkov * 579bd238fb4SLatchesar Ionkov */ 580bd238fb4SLatchesar Ionkov static struct p9_fid * 581bd238fb4SLatchesar Ionkov v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, 582bd238fb4SLatchesar Ionkov struct dentry *dentry, char *extension, u32 perm, u8 mode) 583bd238fb4SLatchesar Ionkov { 584bd238fb4SLatchesar Ionkov int err; 585bd238fb4SLatchesar Ionkov char *name; 586bd238fb4SLatchesar Ionkov struct p9_fid *dfid, *ofid, *fid; 587bd238fb4SLatchesar Ionkov struct inode *inode; 588bd238fb4SLatchesar Ionkov 58951a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); 59051a87c55SEric Van Hensbergen 591bd238fb4SLatchesar Ionkov err = 0; 592bd238fb4SLatchesar Ionkov ofid = NULL; 593bd238fb4SLatchesar Ionkov fid = NULL; 594bd238fb4SLatchesar Ionkov name = (char *) dentry->d_name.name; 5956d27e64dSVenkateswararao Jujjuri dfid = v9fs_fid_lookup(dentry->d_parent); 596bd238fb4SLatchesar Ionkov if (IS_ERR(dfid)) { 597bd238fb4SLatchesar Ionkov err = PTR_ERR(dfid); 5986d27e64dSVenkateswararao Jujjuri P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); 5996d27e64dSVenkateswararao Jujjuri return ERR_PTR(err); 600bd238fb4SLatchesar Ionkov } 601bd238fb4SLatchesar Ionkov 602bd238fb4SLatchesar Ionkov /* clone a fid to use for creation */ 603bd238fb4SLatchesar Ionkov ofid = p9_client_walk(dfid, 0, NULL, 1); 604bd238fb4SLatchesar Ionkov if (IS_ERR(ofid)) { 605bd238fb4SLatchesar Ionkov err = PTR_ERR(ofid); 60651a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); 6076d27e64dSVenkateswararao Jujjuri return ERR_PTR(err); 608bd238fb4SLatchesar Ionkov } 609bd238fb4SLatchesar Ionkov 610bd238fb4SLatchesar Ionkov err = p9_client_fcreate(ofid, name, perm, mode, extension); 61151a87c55SEric Van Hensbergen if (err < 0) { 61251a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "p9_client_fcreate failed %d\n", err); 613bd238fb4SLatchesar Ionkov goto error; 61451a87c55SEric Van Hensbergen } 615bd238fb4SLatchesar Ionkov 616bd238fb4SLatchesar Ionkov /* now walk from the parent so we can get unopened fid */ 6176d27e64dSVenkateswararao Jujjuri fid = p9_client_walk(dfid, 1, &name, 1); 618bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) { 619bd238fb4SLatchesar Ionkov err = PTR_ERR(fid); 62051a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); 621bd238fb4SLatchesar Ionkov fid = NULL; 622bd238fb4SLatchesar Ionkov goto error; 6236d27e64dSVenkateswararao Jujjuri } 624bd238fb4SLatchesar Ionkov 625bd238fb4SLatchesar Ionkov /* instantiate inode and assign the unopened fid to the dentry */ 626bd238fb4SLatchesar Ionkov inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); 627bd238fb4SLatchesar Ionkov if (IS_ERR(inode)) { 628bd238fb4SLatchesar Ionkov err = PTR_ERR(inode); 62951a87c55SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err); 630bd238fb4SLatchesar Ionkov goto error; 631bd238fb4SLatchesar Ionkov } 632bd238fb4SLatchesar Ionkov 633bd238fb4SLatchesar Ionkov if (v9ses->cache) 634bd238fb4SLatchesar Ionkov dentry->d_op = &v9fs_cached_dentry_operations; 635bd238fb4SLatchesar Ionkov else 636bd238fb4SLatchesar Ionkov dentry->d_op = &v9fs_dentry_operations; 637bd238fb4SLatchesar Ionkov 638bd238fb4SLatchesar Ionkov d_instantiate(dentry, inode); 63950fb6d2bSAbhishek Kulkarni err = v9fs_fid_add(dentry, fid); 64050fb6d2bSAbhishek Kulkarni if (err < 0) 64150fb6d2bSAbhishek Kulkarni goto error; 64250fb6d2bSAbhishek Kulkarni 643bd238fb4SLatchesar Ionkov return ofid; 644bd238fb4SLatchesar Ionkov 645bd238fb4SLatchesar Ionkov error: 646bd238fb4SLatchesar Ionkov if (ofid) 647bd238fb4SLatchesar Ionkov p9_client_clunk(ofid); 648bd238fb4SLatchesar Ionkov 649bd238fb4SLatchesar Ionkov if (fid) 650bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 651bd238fb4SLatchesar Ionkov 652bd238fb4SLatchesar Ionkov return ERR_PTR(err); 653bd238fb4SLatchesar Ionkov } 654bd238fb4SLatchesar Ionkov 6552bad8471SEric Van Hensbergen /** 6565643135aSVenkateswararao Jujjuri (JV) * v9fs_vfs_create_dotl - VFS hook to create files for 9P2000.L protocol. 6575643135aSVenkateswararao Jujjuri (JV) * @dir: directory inode that is being created 6585643135aSVenkateswararao Jujjuri (JV) * @dentry: dentry that is being deleted 6595643135aSVenkateswararao Jujjuri (JV) * @mode: create permissions 6605643135aSVenkateswararao Jujjuri (JV) * @nd: path information 6615643135aSVenkateswararao Jujjuri (JV) * 6625643135aSVenkateswararao Jujjuri (JV) */ 6635643135aSVenkateswararao Jujjuri (JV) 6645643135aSVenkateswararao Jujjuri (JV) static int 665ad77dbceSAneesh Kumar K.V v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode, 6665643135aSVenkateswararao Jujjuri (JV) struct nameidata *nd) 6675643135aSVenkateswararao Jujjuri (JV) { 6685643135aSVenkateswararao Jujjuri (JV) int err = 0; 6695643135aSVenkateswararao Jujjuri (JV) char *name = NULL; 6705643135aSVenkateswararao Jujjuri (JV) gid_t gid; 6715643135aSVenkateswararao Jujjuri (JV) int flags; 672ad77dbceSAneesh Kumar K.V mode_t mode; 6735643135aSVenkateswararao Jujjuri (JV) struct v9fs_session_info *v9ses; 6745643135aSVenkateswararao Jujjuri (JV) struct p9_fid *fid = NULL; 6755643135aSVenkateswararao Jujjuri (JV) struct p9_fid *dfid, *ofid; 6765643135aSVenkateswararao Jujjuri (JV) struct file *filp; 6775643135aSVenkateswararao Jujjuri (JV) struct p9_qid qid; 6785643135aSVenkateswararao Jujjuri (JV) struct inode *inode; 679ad77dbceSAneesh Kumar K.V struct posix_acl *pacl = NULL, *dacl = NULL; 6805643135aSVenkateswararao Jujjuri (JV) 6815643135aSVenkateswararao Jujjuri (JV) v9ses = v9fs_inode2v9ses(dir); 6825643135aSVenkateswararao Jujjuri (JV) if (nd && nd->flags & LOOKUP_OPEN) 6835643135aSVenkateswararao Jujjuri (JV) flags = nd->intent.open.flags - 1; 6845643135aSVenkateswararao Jujjuri (JV) else 6855643135aSVenkateswararao Jujjuri (JV) flags = O_RDWR; 6865643135aSVenkateswararao Jujjuri (JV) 6875643135aSVenkateswararao Jujjuri (JV) name = (char *) dentry->d_name.name; 6885643135aSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "v9fs_vfs_create_dotl: name:%s flags:0x%x " 689ad77dbceSAneesh Kumar K.V "mode:0x%x\n", name, flags, omode); 6905643135aSVenkateswararao Jujjuri (JV) 6915643135aSVenkateswararao Jujjuri (JV) dfid = v9fs_fid_lookup(dentry->d_parent); 6925643135aSVenkateswararao Jujjuri (JV) if (IS_ERR(dfid)) { 6935643135aSVenkateswararao Jujjuri (JV) err = PTR_ERR(dfid); 6945643135aSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); 6955643135aSVenkateswararao Jujjuri (JV) return err; 6965643135aSVenkateswararao Jujjuri (JV) } 6975643135aSVenkateswararao Jujjuri (JV) 6985643135aSVenkateswararao Jujjuri (JV) /* clone a fid to use for creation */ 6995643135aSVenkateswararao Jujjuri (JV) ofid = p9_client_walk(dfid, 0, NULL, 1); 7005643135aSVenkateswararao Jujjuri (JV) if (IS_ERR(ofid)) { 7015643135aSVenkateswararao Jujjuri (JV) err = PTR_ERR(ofid); 7025643135aSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); 7035643135aSVenkateswararao Jujjuri (JV) return err; 7045643135aSVenkateswararao Jujjuri (JV) } 7055643135aSVenkateswararao Jujjuri (JV) 7065643135aSVenkateswararao Jujjuri (JV) gid = v9fs_get_fsgid_for_create(dir); 707ad77dbceSAneesh Kumar K.V 708ad77dbceSAneesh Kumar K.V mode = omode; 709ad77dbceSAneesh Kumar K.V /* Update mode based on ACL value */ 710ad77dbceSAneesh Kumar K.V err = v9fs_acl_mode(dir, &mode, &dacl, &pacl); 711ad77dbceSAneesh Kumar K.V if (err) { 712ad77dbceSAneesh Kumar K.V P9_DPRINTK(P9_DEBUG_VFS, 713ad77dbceSAneesh Kumar K.V "Failed to get acl values in creat %d\n", err); 714ad77dbceSAneesh Kumar K.V goto error; 715ad77dbceSAneesh Kumar K.V } 7165643135aSVenkateswararao Jujjuri (JV) err = p9_client_create_dotl(ofid, name, flags, mode, gid, &qid); 7175643135aSVenkateswararao Jujjuri (JV) if (err < 0) { 7185643135aSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, 7195643135aSVenkateswararao Jujjuri (JV) "p9_client_open_dotl failed in creat %d\n", 7205643135aSVenkateswararao Jujjuri (JV) err); 7215643135aSVenkateswararao Jujjuri (JV) goto error; 7225643135aSVenkateswararao Jujjuri (JV) } 723ad77dbceSAneesh Kumar K.V /* instantiate inode and assign the unopened fid to the dentry */ 724ad77dbceSAneesh Kumar K.V if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE || 725ad77dbceSAneesh Kumar K.V (nd && nd->flags & LOOKUP_OPEN)) { 7265643135aSVenkateswararao Jujjuri (JV) fid = p9_client_walk(dfid, 1, &name, 1); 7275643135aSVenkateswararao Jujjuri (JV) if (IS_ERR(fid)) { 7285643135aSVenkateswararao Jujjuri (JV) err = PTR_ERR(fid); 729ad77dbceSAneesh Kumar K.V P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", 730ad77dbceSAneesh Kumar K.V err); 7315643135aSVenkateswararao Jujjuri (JV) fid = NULL; 7325643135aSVenkateswararao Jujjuri (JV) goto error; 7335643135aSVenkateswararao Jujjuri (JV) } 7345643135aSVenkateswararao Jujjuri (JV) 7355643135aSVenkateswararao Jujjuri (JV) inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); 7365643135aSVenkateswararao Jujjuri (JV) if (IS_ERR(inode)) { 7375643135aSVenkateswararao Jujjuri (JV) err = PTR_ERR(inode); 738ad77dbceSAneesh Kumar K.V P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", 739ad77dbceSAneesh Kumar K.V err); 7405643135aSVenkateswararao Jujjuri (JV) goto error; 7415643135aSVenkateswararao Jujjuri (JV) } 7425643135aSVenkateswararao Jujjuri (JV) dentry->d_op = &v9fs_cached_dentry_operations; 7435643135aSVenkateswararao Jujjuri (JV) d_instantiate(dentry, inode); 7445643135aSVenkateswararao Jujjuri (JV) err = v9fs_fid_add(dentry, fid); 7455643135aSVenkateswararao Jujjuri (JV) if (err < 0) 7465643135aSVenkateswararao Jujjuri (JV) goto error; 747ad77dbceSAneesh Kumar K.V /* The fid would get clunked via a dput */ 748ad77dbceSAneesh Kumar K.V fid = NULL; 749ad77dbceSAneesh Kumar K.V } else { 750ad77dbceSAneesh Kumar K.V /* 751ad77dbceSAneesh Kumar K.V * Not in cached mode. No need to populate 752ad77dbceSAneesh Kumar K.V * inode with stat. We need to get an inode 753ad77dbceSAneesh Kumar K.V * so that we can set the acl with dentry 754ad77dbceSAneesh Kumar K.V */ 755ad77dbceSAneesh Kumar K.V inode = v9fs_get_inode(dir->i_sb, mode); 756ad77dbceSAneesh Kumar K.V if (IS_ERR(inode)) { 757ad77dbceSAneesh Kumar K.V err = PTR_ERR(inode); 758ad77dbceSAneesh Kumar K.V goto error; 759ad77dbceSAneesh Kumar K.V } 760ad77dbceSAneesh Kumar K.V dentry->d_op = &v9fs_dentry_operations; 761ad77dbceSAneesh Kumar K.V d_instantiate(dentry, inode); 762ad77dbceSAneesh Kumar K.V } 763ad77dbceSAneesh Kumar K.V /* Now set the ACL based on the default value */ 764ad77dbceSAneesh Kumar K.V v9fs_set_create_acl(dentry, dacl, pacl); 7655643135aSVenkateswararao Jujjuri (JV) 7665643135aSVenkateswararao Jujjuri (JV) /* if we are opening a file, assign the open fid to the file */ 7675643135aSVenkateswararao Jujjuri (JV) if (nd && nd->flags & LOOKUP_OPEN) { 7685643135aSVenkateswararao Jujjuri (JV) filp = lookup_instantiate_filp(nd, dentry, v9fs_open_created); 7695643135aSVenkateswararao Jujjuri (JV) if (IS_ERR(filp)) { 7705643135aSVenkateswararao Jujjuri (JV) p9_client_clunk(ofid); 7715643135aSVenkateswararao Jujjuri (JV) return PTR_ERR(filp); 7725643135aSVenkateswararao Jujjuri (JV) } 7735643135aSVenkateswararao Jujjuri (JV) filp->private_data = ofid; 7745643135aSVenkateswararao Jujjuri (JV) } else 7755643135aSVenkateswararao Jujjuri (JV) p9_client_clunk(ofid); 7765643135aSVenkateswararao Jujjuri (JV) 7775643135aSVenkateswararao Jujjuri (JV) return 0; 7785643135aSVenkateswararao Jujjuri (JV) 7795643135aSVenkateswararao Jujjuri (JV) error: 7805643135aSVenkateswararao Jujjuri (JV) if (ofid) 7815643135aSVenkateswararao Jujjuri (JV) p9_client_clunk(ofid); 7825643135aSVenkateswararao Jujjuri (JV) if (fid) 7835643135aSVenkateswararao Jujjuri (JV) p9_client_clunk(fid); 7845643135aSVenkateswararao Jujjuri (JV) return err; 7855643135aSVenkateswararao Jujjuri (JV) } 7865643135aSVenkateswararao Jujjuri (JV) 7875643135aSVenkateswararao Jujjuri (JV) /** 7882bad8471SEric Van Hensbergen * v9fs_vfs_create - VFS hook to create files 789ee443996SEric Van Hensbergen * @dir: directory inode that is being created 7902bad8471SEric Van Hensbergen * @dentry: dentry that is being deleted 7916a3124a3SLatchesar Ionkov * @mode: create permissions 7922bad8471SEric Van Hensbergen * @nd: path information 7932bad8471SEric Van Hensbergen * 7942bad8471SEric Van Hensbergen */ 7952bad8471SEric Van Hensbergen 7962bad8471SEric Van Hensbergen static int 7976a3124a3SLatchesar Ionkov v9fs_vfs_create(struct inode *dir, struct dentry *dentry, int mode, 7982bad8471SEric Van Hensbergen struct nameidata *nd) 7992bad8471SEric Van Hensbergen { 8006a3124a3SLatchesar Ionkov int err; 801bd238fb4SLatchesar Ionkov u32 perm; 8026a3124a3SLatchesar Ionkov int flags; 8036a3124a3SLatchesar Ionkov struct v9fs_session_info *v9ses; 804bd238fb4SLatchesar Ionkov struct p9_fid *fid; 8056a3124a3SLatchesar Ionkov struct file *filp; 8066a3124a3SLatchesar Ionkov 807bd238fb4SLatchesar Ionkov err = 0; 808bd238fb4SLatchesar Ionkov fid = NULL; 8096a3124a3SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dir); 810da977b2cSEric Van Hensbergen perm = unixmode2p9mode(v9ses, mode); 8116a3124a3SLatchesar Ionkov if (nd && nd->flags & LOOKUP_OPEN) 8126a3124a3SLatchesar Ionkov flags = nd->intent.open.flags - 1; 8136a3124a3SLatchesar Ionkov else 8146a3124a3SLatchesar Ionkov flags = O_RDWR; 8156a3124a3SLatchesar Ionkov 816bd238fb4SLatchesar Ionkov fid = v9fs_create(v9ses, dir, dentry, NULL, perm, 817dd6102fbSSripathi Kodi v9fs_uflags2omode(flags, 818dd6102fbSSripathi Kodi v9fs_proto_dotu(v9ses))); 819bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) { 820bd238fb4SLatchesar Ionkov err = PTR_ERR(fid); 821bd238fb4SLatchesar Ionkov fid = NULL; 8226a3124a3SLatchesar Ionkov goto error; 8236a3124a3SLatchesar Ionkov } 8246a3124a3SLatchesar Ionkov 825bd238fb4SLatchesar Ionkov /* if we are opening a file, assign the open fid to the file */ 8266a3124a3SLatchesar Ionkov if (nd && nd->flags & LOOKUP_OPEN) { 8276a3124a3SLatchesar Ionkov filp = lookup_instantiate_filp(nd, dentry, v9fs_open_created); 8286a3124a3SLatchesar Ionkov if (IS_ERR(filp)) { 829bd238fb4SLatchesar Ionkov err = PTR_ERR(filp); 830bd238fb4SLatchesar Ionkov goto error; 8316a3124a3SLatchesar Ionkov } 8326a3124a3SLatchesar Ionkov 833bd238fb4SLatchesar Ionkov filp->private_data = fid; 834bd238fb4SLatchesar Ionkov } else 835bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 8366a3124a3SLatchesar Ionkov 8376a3124a3SLatchesar Ionkov return 0; 8386a3124a3SLatchesar Ionkov 8396a3124a3SLatchesar Ionkov error: 840bd238fb4SLatchesar Ionkov if (fid) 841bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 8426a3124a3SLatchesar Ionkov 8436a3124a3SLatchesar Ionkov return err; 8442bad8471SEric Van Hensbergen } 8452bad8471SEric Van Hensbergen 8462bad8471SEric Van Hensbergen /** 8472bad8471SEric Van Hensbergen * v9fs_vfs_mkdir - VFS mkdir hook to create a directory 848ee443996SEric Van Hensbergen * @dir: inode that is being unlinked 8492bad8471SEric Van Hensbergen * @dentry: dentry that is being unlinked 8502bad8471SEric Van Hensbergen * @mode: mode for new directory 8512bad8471SEric Van Hensbergen * 8522bad8471SEric Van Hensbergen */ 8532bad8471SEric Van Hensbergen 8546a3124a3SLatchesar Ionkov static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) 8552bad8471SEric Van Hensbergen { 8566a3124a3SLatchesar Ionkov int err; 857bd238fb4SLatchesar Ionkov u32 perm; 8586a3124a3SLatchesar Ionkov struct v9fs_session_info *v9ses; 859bd238fb4SLatchesar Ionkov struct p9_fid *fid; 8606a3124a3SLatchesar Ionkov 861bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); 862bd238fb4SLatchesar Ionkov err = 0; 8636a3124a3SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dir); 8646a3124a3SLatchesar Ionkov perm = unixmode2p9mode(v9ses, mode | S_IFDIR); 865bd238fb4SLatchesar Ionkov fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_OREAD); 866bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) { 867bd238fb4SLatchesar Ionkov err = PTR_ERR(fid); 868bd238fb4SLatchesar Ionkov fid = NULL; 8696a3124a3SLatchesar Ionkov } 8706a3124a3SLatchesar Ionkov 871bd238fb4SLatchesar Ionkov if (fid) 872bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 8736a3124a3SLatchesar Ionkov 8746a3124a3SLatchesar Ionkov return err; 8752bad8471SEric Van Hensbergen } 8762bad8471SEric Van Hensbergen 87701a622bdSM. Mohan Kumar 87801a622bdSM. Mohan Kumar /** 87901a622bdSM. Mohan Kumar * v9fs_vfs_mkdir_dotl - VFS mkdir hook to create a directory 88001a622bdSM. Mohan Kumar * @dir: inode that is being unlinked 88101a622bdSM. Mohan Kumar * @dentry: dentry that is being unlinked 88201a622bdSM. Mohan Kumar * @mode: mode for new directory 88301a622bdSM. Mohan Kumar * 88401a622bdSM. Mohan Kumar */ 88501a622bdSM. Mohan Kumar 886ad77dbceSAneesh Kumar K.V static int v9fs_vfs_mkdir_dotl(struct inode *dir, 887ad77dbceSAneesh Kumar K.V struct dentry *dentry, int omode) 88801a622bdSM. Mohan Kumar { 88901a622bdSM. Mohan Kumar int err; 89001a622bdSM. Mohan Kumar struct v9fs_session_info *v9ses; 89101a622bdSM. Mohan Kumar struct p9_fid *fid = NULL, *dfid = NULL; 89201a622bdSM. Mohan Kumar gid_t gid; 89301a622bdSM. Mohan Kumar char *name; 894ad77dbceSAneesh Kumar K.V mode_t mode; 89501a622bdSM. Mohan Kumar struct inode *inode; 89601a622bdSM. Mohan Kumar struct p9_qid qid; 89701a622bdSM. Mohan Kumar struct dentry *dir_dentry; 898ad77dbceSAneesh Kumar K.V struct posix_acl *dacl = NULL, *pacl = NULL; 89901a622bdSM. Mohan Kumar 90001a622bdSM. Mohan Kumar P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); 90101a622bdSM. Mohan Kumar err = 0; 90201a622bdSM. Mohan Kumar v9ses = v9fs_inode2v9ses(dir); 90301a622bdSM. Mohan Kumar 904ad77dbceSAneesh Kumar K.V omode |= S_IFDIR; 9057c7298cfSHarsh Prateek Bora if (dir->i_mode & S_ISGID) 906ad77dbceSAneesh Kumar K.V omode |= S_ISGID; 907ad77dbceSAneesh Kumar K.V 90801a622bdSM. Mohan Kumar dir_dentry = v9fs_dentry_from_dir_inode(dir); 90901a622bdSM. Mohan Kumar dfid = v9fs_fid_lookup(dir_dentry); 91001a622bdSM. Mohan Kumar if (IS_ERR(dfid)) { 91101a622bdSM. Mohan Kumar err = PTR_ERR(dfid); 91201a622bdSM. Mohan Kumar P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); 91301a622bdSM. Mohan Kumar dfid = NULL; 91401a622bdSM. Mohan Kumar goto error; 91501a622bdSM. Mohan Kumar } 91601a622bdSM. Mohan Kumar 91701a622bdSM. Mohan Kumar gid = v9fs_get_fsgid_for_create(dir); 918ad77dbceSAneesh Kumar K.V mode = omode; 919ad77dbceSAneesh Kumar K.V /* Update mode based on ACL value */ 920ad77dbceSAneesh Kumar K.V err = v9fs_acl_mode(dir, &mode, &dacl, &pacl); 921ad77dbceSAneesh Kumar K.V if (err) { 922ad77dbceSAneesh Kumar K.V P9_DPRINTK(P9_DEBUG_VFS, 923ad77dbceSAneesh Kumar K.V "Failed to get acl values in mkdir %d\n", err); 924ad77dbceSAneesh Kumar K.V goto error; 925ad77dbceSAneesh Kumar K.V } 92601a622bdSM. Mohan Kumar name = (char *) dentry->d_name.name; 92701a622bdSM. Mohan Kumar err = p9_client_mkdir_dotl(dfid, name, mode, gid, &qid); 92801a622bdSM. Mohan Kumar if (err < 0) 92901a622bdSM. Mohan Kumar goto error; 93001a622bdSM. Mohan Kumar 93101a622bdSM. Mohan Kumar /* instantiate inode and assign the unopened fid to the dentry */ 93201a622bdSM. Mohan Kumar if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { 93301a622bdSM. Mohan Kumar fid = p9_client_walk(dfid, 1, &name, 1); 93401a622bdSM. Mohan Kumar if (IS_ERR(fid)) { 93501a622bdSM. Mohan Kumar err = PTR_ERR(fid); 93601a622bdSM. Mohan Kumar P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", 93701a622bdSM. Mohan Kumar err); 93801a622bdSM. Mohan Kumar fid = NULL; 93901a622bdSM. Mohan Kumar goto error; 94001a622bdSM. Mohan Kumar } 94101a622bdSM. Mohan Kumar 94201a622bdSM. Mohan Kumar inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); 94301a622bdSM. Mohan Kumar if (IS_ERR(inode)) { 94401a622bdSM. Mohan Kumar err = PTR_ERR(inode); 94501a622bdSM. Mohan Kumar P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", 94601a622bdSM. Mohan Kumar err); 94701a622bdSM. Mohan Kumar goto error; 94801a622bdSM. Mohan Kumar } 94901a622bdSM. Mohan Kumar dentry->d_op = &v9fs_cached_dentry_operations; 95001a622bdSM. Mohan Kumar d_instantiate(dentry, inode); 95101a622bdSM. Mohan Kumar err = v9fs_fid_add(dentry, fid); 95201a622bdSM. Mohan Kumar if (err < 0) 95301a622bdSM. Mohan Kumar goto error; 95401a622bdSM. Mohan Kumar fid = NULL; 955ad77dbceSAneesh Kumar K.V } else { 956ad77dbceSAneesh Kumar K.V /* 957ad77dbceSAneesh Kumar K.V * Not in cached mode. No need to populate 958ad77dbceSAneesh Kumar K.V * inode with stat. We need to get an inode 959ad77dbceSAneesh Kumar K.V * so that we can set the acl with dentry 960ad77dbceSAneesh Kumar K.V */ 961ad77dbceSAneesh Kumar K.V inode = v9fs_get_inode(dir->i_sb, mode); 962ad77dbceSAneesh Kumar K.V if (IS_ERR(inode)) { 963ad77dbceSAneesh Kumar K.V err = PTR_ERR(inode); 964ad77dbceSAneesh Kumar K.V goto error; 96501a622bdSM. Mohan Kumar } 966ad77dbceSAneesh Kumar K.V dentry->d_op = &v9fs_dentry_operations; 967ad77dbceSAneesh Kumar K.V d_instantiate(dentry, inode); 968ad77dbceSAneesh Kumar K.V } 969ad77dbceSAneesh Kumar K.V /* Now set the ACL based on the default value */ 970ad77dbceSAneesh Kumar K.V v9fs_set_create_acl(dentry, dacl, pacl); 971ad77dbceSAneesh Kumar K.V 97201a622bdSM. Mohan Kumar error: 97301a622bdSM. Mohan Kumar if (fid) 97401a622bdSM. Mohan Kumar p9_client_clunk(fid); 97501a622bdSM. Mohan Kumar return err; 97601a622bdSM. Mohan Kumar } 97701a622bdSM. Mohan Kumar 9782bad8471SEric Van Hensbergen /** 9792bad8471SEric Van Hensbergen * v9fs_vfs_lookup - VFS lookup hook to "walk" to a new inode 9802bad8471SEric Van Hensbergen * @dir: inode that is being walked from 9812bad8471SEric Van Hensbergen * @dentry: dentry that is being walked to? 9822bad8471SEric Van Hensbergen * @nameidata: path data 9832bad8471SEric Van Hensbergen * 9842bad8471SEric Van Hensbergen */ 9852bad8471SEric Van Hensbergen 9862bad8471SEric Van Hensbergen static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, 9872bad8471SEric Van Hensbergen struct nameidata *nameidata) 9882bad8471SEric Van Hensbergen { 9892bad8471SEric Van Hensbergen struct super_block *sb; 9902bad8471SEric Van Hensbergen struct v9fs_session_info *v9ses; 991bd238fb4SLatchesar Ionkov struct p9_fid *dfid, *fid; 9922bad8471SEric Van Hensbergen struct inode *inode; 993bd238fb4SLatchesar Ionkov char *name; 9942bad8471SEric Van Hensbergen int result = 0; 9952bad8471SEric Van Hensbergen 996bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p nameidata: %p\n", 997731805b4SLatchesar Ionkov dir, dentry->d_name.name, dentry, nameidata); 9982bad8471SEric Van Hensbergen 99911e9b49bSSripathi Kodi if (dentry->d_name.len > NAME_MAX) 100011e9b49bSSripathi Kodi return ERR_PTR(-ENAMETOOLONG); 100111e9b49bSSripathi Kodi 10022bad8471SEric Van Hensbergen sb = dir->i_sb; 10032bad8471SEric Van Hensbergen v9ses = v9fs_inode2v9ses(dir); 1004a534c8d1SAneesh Kumar K.V /* We can walk d_parent because we hold the dir->i_mutex */ 1005bd238fb4SLatchesar Ionkov dfid = v9fs_fid_lookup(dentry->d_parent); 1006bd238fb4SLatchesar Ionkov if (IS_ERR(dfid)) 1007e231c2eeSDavid Howells return ERR_CAST(dfid); 10082bad8471SEric Van Hensbergen 1009bd238fb4SLatchesar Ionkov name = (char *) dentry->d_name.name; 1010bd238fb4SLatchesar Ionkov fid = p9_client_walk(dfid, 1, &name, 1); 1011bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) { 1012bd238fb4SLatchesar Ionkov result = PTR_ERR(fid); 10132bad8471SEric Van Hensbergen if (result == -ENOENT) { 101485e0df24SAneesh Kumar K.V inode = NULL; 101585e0df24SAneesh Kumar K.V goto inst_out; 10162bad8471SEric Van Hensbergen } 10172bad8471SEric Van Hensbergen 1018bd238fb4SLatchesar Ionkov return ERR_PTR(result); 10192bad8471SEric Van Hensbergen } 10202bad8471SEric Van Hensbergen 1021bd238fb4SLatchesar Ionkov inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); 1022bd238fb4SLatchesar Ionkov if (IS_ERR(inode)) { 1023bd238fb4SLatchesar Ionkov result = PTR_ERR(inode); 1024bd238fb4SLatchesar Ionkov inode = NULL; 1025bd238fb4SLatchesar Ionkov goto error; 10262bad8471SEric Van Hensbergen } 10272bad8471SEric Van Hensbergen 1028bd238fb4SLatchesar Ionkov result = v9fs_fid_add(dentry, fid); 10296a3124a3SLatchesar Ionkov if (result < 0) 1030bd238fb4SLatchesar Ionkov goto error; 10316a3124a3SLatchesar Ionkov 103285e0df24SAneesh Kumar K.V inst_out: 103385e0df24SAneesh Kumar K.V if (v9ses->cache) 1034e03abc0cSEric Van Hensbergen dentry->d_op = &v9fs_cached_dentry_operations; 1035e03abc0cSEric Van Hensbergen else 1036e03abc0cSEric Van Hensbergen dentry->d_op = &v9fs_dentry_operations; 10372bad8471SEric Van Hensbergen 10382bad8471SEric Van Hensbergen d_add(dentry, inode); 10392bad8471SEric Van Hensbergen return NULL; 10402bad8471SEric Van Hensbergen 1041bd238fb4SLatchesar Ionkov error: 1042bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 1043da977b2cSEric Van Hensbergen 10442bad8471SEric Van Hensbergen return ERR_PTR(result); 10452bad8471SEric Van Hensbergen } 10462bad8471SEric Van Hensbergen 10472bad8471SEric Van Hensbergen /** 10482bad8471SEric Van Hensbergen * v9fs_vfs_unlink - VFS unlink hook to delete an inode 10492bad8471SEric Van Hensbergen * @i: inode that is being unlinked 105073c592b9SEric Van Hensbergen * @d: dentry that is being unlinked 10512bad8471SEric Van Hensbergen * 10522bad8471SEric Van Hensbergen */ 10532bad8471SEric Van Hensbergen 10542bad8471SEric Van Hensbergen static int v9fs_vfs_unlink(struct inode *i, struct dentry *d) 10552bad8471SEric Van Hensbergen { 10562bad8471SEric Van Hensbergen return v9fs_remove(i, d, 0); 10572bad8471SEric Van Hensbergen } 10582bad8471SEric Van Hensbergen 10592bad8471SEric Van Hensbergen /** 10602bad8471SEric Van Hensbergen * v9fs_vfs_rmdir - VFS unlink hook to delete a directory 10612bad8471SEric Van Hensbergen * @i: inode that is being unlinked 106273c592b9SEric Van Hensbergen * @d: dentry that is being unlinked 10632bad8471SEric Van Hensbergen * 10642bad8471SEric Van Hensbergen */ 10652bad8471SEric Van Hensbergen 10662bad8471SEric Van Hensbergen static int v9fs_vfs_rmdir(struct inode *i, struct dentry *d) 10672bad8471SEric Van Hensbergen { 10682bad8471SEric Van Hensbergen return v9fs_remove(i, d, 1); 10692bad8471SEric Van Hensbergen } 10702bad8471SEric Van Hensbergen 10712bad8471SEric Van Hensbergen /** 10722bad8471SEric Van Hensbergen * v9fs_vfs_rename - VFS hook to rename an inode 10732bad8471SEric Van Hensbergen * @old_dir: old dir inode 10742bad8471SEric Van Hensbergen * @old_dentry: old dentry 10752bad8471SEric Van Hensbergen * @new_dir: new dir inode 10762bad8471SEric Van Hensbergen * @new_dentry: new dentry 10772bad8471SEric Van Hensbergen * 10782bad8471SEric Van Hensbergen */ 10792bad8471SEric Van Hensbergen 10802bad8471SEric Van Hensbergen static int 10812bad8471SEric Van Hensbergen v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry, 10822bad8471SEric Van Hensbergen struct inode *new_dir, struct dentry *new_dentry) 10832bad8471SEric Van Hensbergen { 1084bd238fb4SLatchesar Ionkov struct inode *old_inode; 1085bd238fb4SLatchesar Ionkov struct v9fs_session_info *v9ses; 1086bd238fb4SLatchesar Ionkov struct p9_fid *oldfid; 1087bd238fb4SLatchesar Ionkov struct p9_fid *olddirfid; 1088bd238fb4SLatchesar Ionkov struct p9_fid *newdirfid; 1089bd238fb4SLatchesar Ionkov struct p9_wstat wstat; 1090bd238fb4SLatchesar Ionkov int retval; 10912bad8471SEric Van Hensbergen 1092bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "\n"); 1093bd238fb4SLatchesar Ionkov retval = 0; 1094bd238fb4SLatchesar Ionkov old_inode = old_dentry->d_inode; 1095bd238fb4SLatchesar Ionkov v9ses = v9fs_inode2v9ses(old_inode); 1096bd238fb4SLatchesar Ionkov oldfid = v9fs_fid_lookup(old_dentry); 1097da977b2cSEric Van Hensbergen if (IS_ERR(oldfid)) 1098da977b2cSEric Van Hensbergen return PTR_ERR(oldfid); 1099da977b2cSEric Van Hensbergen 1100da977b2cSEric Van Hensbergen olddirfid = v9fs_fid_clone(old_dentry->d_parent); 1101da977b2cSEric Van Hensbergen if (IS_ERR(olddirfid)) { 1102da977b2cSEric Van Hensbergen retval = PTR_ERR(olddirfid); 1103bd238fb4SLatchesar Ionkov goto done; 1104da977b2cSEric Van Hensbergen } 1105da977b2cSEric Van Hensbergen 1106da977b2cSEric Van Hensbergen newdirfid = v9fs_fid_clone(new_dentry->d_parent); 1107da977b2cSEric Van Hensbergen if (IS_ERR(newdirfid)) { 1108da977b2cSEric Van Hensbergen retval = PTR_ERR(newdirfid); 1109bd238fb4SLatchesar Ionkov goto clunk_olddir; 11102bad8471SEric Van Hensbergen } 11112bad8471SEric Van Hensbergen 1112a534c8d1SAneesh Kumar K.V down_write(&v9ses->rename_sem); 11134681dbdaSSripathi Kodi if (v9fs_proto_dotl(v9ses)) { 11144681dbdaSSripathi Kodi retval = p9_client_rename(oldfid, newdirfid, 11154681dbdaSSripathi Kodi (char *) new_dentry->d_name.name); 11164681dbdaSSripathi Kodi if (retval != -ENOSYS) 11174681dbdaSSripathi Kodi goto clunk_newdir; 11184681dbdaSSripathi Kodi } 1119a534c8d1SAneesh Kumar K.V if (old_dentry->d_parent != new_dentry->d_parent) { 1120a534c8d1SAneesh Kumar K.V /* 1121a534c8d1SAneesh Kumar K.V * 9P .u can only handle file rename in the same directory 1122a534c8d1SAneesh Kumar K.V */ 11234681dbdaSSripathi Kodi 1124bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_ERROR, 1125bd238fb4SLatchesar Ionkov "old dir and new dir are different\n"); 1126621997cdSEric Van Hensbergen retval = -EXDEV; 1127bd238fb4SLatchesar Ionkov goto clunk_newdir; 11282bad8471SEric Van Hensbergen } 1129531b1094SLatchesar Ionkov v9fs_blank_wstat(&wstat); 1130ba17674fSLatchesar Ionkov wstat.muid = v9ses->uname; 1131531b1094SLatchesar Ionkov wstat.name = (char *) new_dentry->d_name.name; 1132bd238fb4SLatchesar Ionkov retval = p9_client_wstat(oldfid, &wstat); 11332bad8471SEric Van Hensbergen 1134bd238fb4SLatchesar Ionkov clunk_newdir: 1135a534c8d1SAneesh Kumar K.V if (!retval) 1136a534c8d1SAneesh Kumar K.V /* successful rename */ 1137a534c8d1SAneesh Kumar K.V d_move(old_dentry, new_dentry); 1138a534c8d1SAneesh Kumar K.V up_write(&v9ses->rename_sem); 113922150c4fSLatchesar Ionkov p9_client_clunk(newdirfid); 11402bad8471SEric Van Hensbergen 1141bd238fb4SLatchesar Ionkov clunk_olddir: 114222150c4fSLatchesar Ionkov p9_client_clunk(olddirfid); 11432bad8471SEric Van Hensbergen 1144bd238fb4SLatchesar Ionkov done: 11452bad8471SEric Van Hensbergen return retval; 11462bad8471SEric Van Hensbergen } 11472bad8471SEric Van Hensbergen 11482bad8471SEric Van Hensbergen /** 1149943ffb58SAdrian Bunk * v9fs_vfs_getattr - retrieve file metadata 1150ee443996SEric Van Hensbergen * @mnt: mount information 1151ee443996SEric Van Hensbergen * @dentry: file to get attributes on 1152ee443996SEric Van Hensbergen * @stat: metadata structure to populate 11532bad8471SEric Van Hensbergen * 11542bad8471SEric Van Hensbergen */ 11552bad8471SEric Van Hensbergen 11562bad8471SEric Van Hensbergen static int 11572bad8471SEric Van Hensbergen v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry, 11582bad8471SEric Van Hensbergen struct kstat *stat) 11592bad8471SEric Van Hensbergen { 1160bd238fb4SLatchesar Ionkov int err; 1161bd238fb4SLatchesar Ionkov struct v9fs_session_info *v9ses; 1162bd238fb4SLatchesar Ionkov struct p9_fid *fid; 116351a87c55SEric Van Hensbergen struct p9_wstat *st; 11642bad8471SEric Van Hensbergen 1165bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry); 1166bd238fb4SLatchesar Ionkov err = -EPERM; 1167bd238fb4SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dentry->d_inode); 116860e78d2cSAbhishek Kulkarni if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) 11699523a841SEric Van Hensbergen return simple_getattr(mnt, dentry, stat); 11709523a841SEric Van Hensbergen 1171bd238fb4SLatchesar Ionkov fid = v9fs_fid_lookup(dentry); 1172da977b2cSEric Van Hensbergen if (IS_ERR(fid)) 1173da977b2cSEric Van Hensbergen return PTR_ERR(fid); 11742bad8471SEric Van Hensbergen 1175bd238fb4SLatchesar Ionkov st = p9_client_stat(fid); 1176bd238fb4SLatchesar Ionkov if (IS_ERR(st)) 1177bd238fb4SLatchesar Ionkov return PTR_ERR(st); 11782bad8471SEric Van Hensbergen 1179bd238fb4SLatchesar Ionkov v9fs_stat2inode(st, dentry->d_inode, dentry->d_inode->i_sb); 11802bad8471SEric Van Hensbergen generic_fillattr(dentry->d_inode, stat); 11812bad8471SEric Van Hensbergen 118262b2be59SLatchesar Ionkov p9stat_free(st); 1183bd238fb4SLatchesar Ionkov kfree(st); 1184bd238fb4SLatchesar Ionkov return 0; 11852bad8471SEric Van Hensbergen } 11862bad8471SEric Van Hensbergen 1187f0853122SSripathi Kodi static int 1188f0853122SSripathi Kodi v9fs_vfs_getattr_dotl(struct vfsmount *mnt, struct dentry *dentry, 1189f0853122SSripathi Kodi struct kstat *stat) 1190f0853122SSripathi Kodi { 1191f0853122SSripathi Kodi int err; 1192f0853122SSripathi Kodi struct v9fs_session_info *v9ses; 1193f0853122SSripathi Kodi struct p9_fid *fid; 1194f0853122SSripathi Kodi struct p9_stat_dotl *st; 1195f0853122SSripathi Kodi 1196f0853122SSripathi Kodi P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry); 1197f0853122SSripathi Kodi err = -EPERM; 1198f0853122SSripathi Kodi v9ses = v9fs_inode2v9ses(dentry->d_inode); 1199f0853122SSripathi Kodi if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) 1200f0853122SSripathi Kodi return simple_getattr(mnt, dentry, stat); 1201f0853122SSripathi Kodi 1202f0853122SSripathi Kodi fid = v9fs_fid_lookup(dentry); 1203f0853122SSripathi Kodi if (IS_ERR(fid)) 1204f0853122SSripathi Kodi return PTR_ERR(fid); 1205f0853122SSripathi Kodi 1206f0853122SSripathi Kodi /* Ask for all the fields in stat structure. Server will return 1207f0853122SSripathi Kodi * whatever it supports 1208f0853122SSripathi Kodi */ 1209f0853122SSripathi Kodi 1210f0853122SSripathi Kodi st = p9_client_getattr_dotl(fid, P9_STATS_ALL); 1211f0853122SSripathi Kodi if (IS_ERR(st)) 1212f0853122SSripathi Kodi return PTR_ERR(st); 1213f0853122SSripathi Kodi 1214f0853122SSripathi Kodi v9fs_stat2inode_dotl(st, dentry->d_inode); 1215f0853122SSripathi Kodi generic_fillattr(dentry->d_inode, stat); 1216f0853122SSripathi Kodi /* Change block size to what the server returned */ 1217f0853122SSripathi Kodi stat->blksize = st->st_blksize; 1218f0853122SSripathi Kodi 1219f0853122SSripathi Kodi kfree(st); 1220f0853122SSripathi Kodi return 0; 1221f0853122SSripathi Kodi } 1222f0853122SSripathi Kodi 12232bad8471SEric Van Hensbergen /** 12242bad8471SEric Van Hensbergen * v9fs_vfs_setattr - set file metadata 12252bad8471SEric Van Hensbergen * @dentry: file whose metadata to set 12262bad8471SEric Van Hensbergen * @iattr: metadata assignment structure 12272bad8471SEric Van Hensbergen * 12282bad8471SEric Van Hensbergen */ 12292bad8471SEric Van Hensbergen 12302bad8471SEric Van Hensbergen static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr) 12312bad8471SEric Van Hensbergen { 1232bd238fb4SLatchesar Ionkov int retval; 1233bd238fb4SLatchesar Ionkov struct v9fs_session_info *v9ses; 1234bd238fb4SLatchesar Ionkov struct p9_fid *fid; 1235bd238fb4SLatchesar Ionkov struct p9_wstat wstat; 12362bad8471SEric Van Hensbergen 1237bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "\n"); 1238bd238fb4SLatchesar Ionkov retval = -EPERM; 1239bd238fb4SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dentry->d_inode); 1240bd238fb4SLatchesar Ionkov fid = v9fs_fid_lookup(dentry); 1241da977b2cSEric Van Hensbergen if(IS_ERR(fid)) 1242da977b2cSEric Van Hensbergen return PTR_ERR(fid); 12432bad8471SEric Van Hensbergen 1244531b1094SLatchesar Ionkov v9fs_blank_wstat(&wstat); 12452bad8471SEric Van Hensbergen if (iattr->ia_valid & ATTR_MODE) 1246531b1094SLatchesar Ionkov wstat.mode = unixmode2p9mode(v9ses, iattr->ia_mode); 12472bad8471SEric Van Hensbergen 12482bad8471SEric Van Hensbergen if (iattr->ia_valid & ATTR_MTIME) 1249531b1094SLatchesar Ionkov wstat.mtime = iattr->ia_mtime.tv_sec; 12502bad8471SEric Van Hensbergen 12512bad8471SEric Van Hensbergen if (iattr->ia_valid & ATTR_ATIME) 1252531b1094SLatchesar Ionkov wstat.atime = iattr->ia_atime.tv_sec; 12532bad8471SEric Van Hensbergen 12542bad8471SEric Van Hensbergen if (iattr->ia_valid & ATTR_SIZE) 1255531b1094SLatchesar Ionkov wstat.length = iattr->ia_size; 12562bad8471SEric Van Hensbergen 1257dd6102fbSSripathi Kodi if (v9fs_proto_dotu(v9ses)) { 1258531b1094SLatchesar Ionkov if (iattr->ia_valid & ATTR_UID) 1259531b1094SLatchesar Ionkov wstat.n_uid = iattr->ia_uid; 12602bad8471SEric Van Hensbergen 1261531b1094SLatchesar Ionkov if (iattr->ia_valid & ATTR_GID) 1262531b1094SLatchesar Ionkov wstat.n_gid = iattr->ia_gid; 12632bad8471SEric Van Hensbergen } 12642bad8471SEric Van Hensbergen 1265bd238fb4SLatchesar Ionkov retval = p9_client_wstat(fid, &wstat); 12661025774cSChristoph Hellwig if (retval < 0) 1267bd238fb4SLatchesar Ionkov return retval; 12681025774cSChristoph Hellwig 12691025774cSChristoph Hellwig if ((iattr->ia_valid & ATTR_SIZE) && 12701025774cSChristoph Hellwig iattr->ia_size != i_size_read(dentry->d_inode)) { 12711025774cSChristoph Hellwig retval = vmtruncate(dentry->d_inode, iattr->ia_size); 12721025774cSChristoph Hellwig if (retval) 12731025774cSChristoph Hellwig return retval; 12741025774cSChristoph Hellwig } 12751025774cSChristoph Hellwig 12761025774cSChristoph Hellwig setattr_copy(dentry->d_inode, iattr); 12771025774cSChristoph Hellwig mark_inode_dirty(dentry->d_inode); 12781025774cSChristoph Hellwig return 0; 12792bad8471SEric Van Hensbergen } 12802bad8471SEric Van Hensbergen 12812bad8471SEric Van Hensbergen /** 128287d7845aSSripathi Kodi * v9fs_vfs_setattr_dotl - set file metadata 128387d7845aSSripathi Kodi * @dentry: file whose metadata to set 128487d7845aSSripathi Kodi * @iattr: metadata assignment structure 128587d7845aSSripathi Kodi * 128687d7845aSSripathi Kodi */ 128787d7845aSSripathi Kodi 128822d8dcdfSAneesh Kumar K.V int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr) 128987d7845aSSripathi Kodi { 129087d7845aSSripathi Kodi int retval; 129187d7845aSSripathi Kodi struct v9fs_session_info *v9ses; 129287d7845aSSripathi Kodi struct p9_fid *fid; 129387d7845aSSripathi Kodi struct p9_iattr_dotl p9attr; 129487d7845aSSripathi Kodi 129587d7845aSSripathi Kodi P9_DPRINTK(P9_DEBUG_VFS, "\n"); 129687d7845aSSripathi Kodi 129787d7845aSSripathi Kodi retval = inode_change_ok(dentry->d_inode, iattr); 129887d7845aSSripathi Kodi if (retval) 129987d7845aSSripathi Kodi return retval; 130087d7845aSSripathi Kodi 130187d7845aSSripathi Kodi p9attr.valid = iattr->ia_valid; 130287d7845aSSripathi Kodi p9attr.mode = iattr->ia_mode; 130387d7845aSSripathi Kodi p9attr.uid = iattr->ia_uid; 130487d7845aSSripathi Kodi p9attr.gid = iattr->ia_gid; 130587d7845aSSripathi Kodi p9attr.size = iattr->ia_size; 130687d7845aSSripathi Kodi p9attr.atime_sec = iattr->ia_atime.tv_sec; 130787d7845aSSripathi Kodi p9attr.atime_nsec = iattr->ia_atime.tv_nsec; 130887d7845aSSripathi Kodi p9attr.mtime_sec = iattr->ia_mtime.tv_sec; 130987d7845aSSripathi Kodi p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec; 131087d7845aSSripathi Kodi 131187d7845aSSripathi Kodi retval = -EPERM; 131287d7845aSSripathi Kodi v9ses = v9fs_inode2v9ses(dentry->d_inode); 131387d7845aSSripathi Kodi fid = v9fs_fid_lookup(dentry); 131487d7845aSSripathi Kodi if (IS_ERR(fid)) 131587d7845aSSripathi Kodi return PTR_ERR(fid); 131687d7845aSSripathi Kodi 131787d7845aSSripathi Kodi retval = p9_client_setattr(fid, &p9attr); 13188cef9c67SStephen Rothwell if (retval < 0) 131987d7845aSSripathi Kodi return retval; 13208cef9c67SStephen Rothwell 13218cef9c67SStephen Rothwell if ((iattr->ia_valid & ATTR_SIZE) && 13228cef9c67SStephen Rothwell iattr->ia_size != i_size_read(dentry->d_inode)) { 13238cef9c67SStephen Rothwell retval = vmtruncate(dentry->d_inode, iattr->ia_size); 13248cef9c67SStephen Rothwell if (retval) 13258cef9c67SStephen Rothwell return retval; 13268cef9c67SStephen Rothwell } 13278cef9c67SStephen Rothwell 13288cef9c67SStephen Rothwell setattr_copy(dentry->d_inode, iattr); 13298cef9c67SStephen Rothwell mark_inode_dirty(dentry->d_inode); 13306e8dc555SAneesh Kumar K.V if (iattr->ia_valid & ATTR_MODE) { 13316e8dc555SAneesh Kumar K.V /* We also want to update ACL when we update mode bits */ 13326e8dc555SAneesh Kumar K.V retval = v9fs_acl_chmod(dentry); 13336e8dc555SAneesh Kumar K.V if (retval < 0) 13346e8dc555SAneesh Kumar K.V return retval; 13356e8dc555SAneesh Kumar K.V } 13368cef9c67SStephen Rothwell return 0; 133787d7845aSSripathi Kodi } 133887d7845aSSripathi Kodi 133987d7845aSSripathi Kodi /** 1340531b1094SLatchesar Ionkov * v9fs_stat2inode - populate an inode structure with mistat info 1341531b1094SLatchesar Ionkov * @stat: Plan 9 metadata (mistat) structure 13422bad8471SEric Van Hensbergen * @inode: inode to populate 13432bad8471SEric Van Hensbergen * @sb: superblock of filesystem 13442bad8471SEric Van Hensbergen * 13452bad8471SEric Van Hensbergen */ 13462bad8471SEric Van Hensbergen 13472bad8471SEric Van Hensbergen void 134851a87c55SEric Van Hensbergen v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode, 13492bad8471SEric Van Hensbergen struct super_block *sb) 13502bad8471SEric Van Hensbergen { 1351531b1094SLatchesar Ionkov char ext[32]; 13525717144aSAneesh Kumar K.V char tag_name[14]; 13535717144aSAneesh Kumar K.V unsigned int i_nlink; 13542bad8471SEric Van Hensbergen struct v9fs_session_info *v9ses = sb->s_fs_info; 13552bad8471SEric Van Hensbergen 13562bad8471SEric Van Hensbergen inode->i_nlink = 1; 13572bad8471SEric Van Hensbergen 1358531b1094SLatchesar Ionkov inode->i_atime.tv_sec = stat->atime; 1359531b1094SLatchesar Ionkov inode->i_mtime.tv_sec = stat->mtime; 1360531b1094SLatchesar Ionkov inode->i_ctime.tv_sec = stat->mtime; 13612bad8471SEric Van Hensbergen 1362bd32b82dSLatchesar Ionkov inode->i_uid = v9ses->dfltuid; 1363bd32b82dSLatchesar Ionkov inode->i_gid = v9ses->dfltgid; 13642bad8471SEric Van Hensbergen 1365dd6102fbSSripathi Kodi if (v9fs_proto_dotu(v9ses)) { 1366531b1094SLatchesar Ionkov inode->i_uid = stat->n_uid; 1367531b1094SLatchesar Ionkov inode->i_gid = stat->n_gid; 1368531b1094SLatchesar Ionkov } 13695717144aSAneesh Kumar K.V if ((S_ISREG(inode->i_mode)) || (S_ISDIR(inode->i_mode))) { 13705717144aSAneesh Kumar K.V if (v9fs_proto_dotu(v9ses) && (stat->extension[0] != '\0')) { 13715717144aSAneesh Kumar K.V /* 13725717144aSAneesh Kumar K.V * Hadlink support got added later to 13735717144aSAneesh Kumar K.V * to the .u extension. So there can be 13745717144aSAneesh Kumar K.V * server out there that doesn't support 13755717144aSAneesh Kumar K.V * this even with .u extension. So check 13765717144aSAneesh Kumar K.V * for non NULL stat->extension 13775717144aSAneesh Kumar K.V */ 13785717144aSAneesh Kumar K.V strncpy(ext, stat->extension, sizeof(ext)); 13795717144aSAneesh Kumar K.V /* HARDLINKCOUNT %u */ 13805717144aSAneesh Kumar K.V sscanf(ext, "%13s %u", tag_name, &i_nlink); 13815717144aSAneesh Kumar K.V if (!strncmp(tag_name, "HARDLINKCOUNT", 13)) 13825717144aSAneesh Kumar K.V inode->i_nlink = i_nlink; 13835717144aSAneesh Kumar K.V } 13845717144aSAneesh Kumar K.V } 1385531b1094SLatchesar Ionkov inode->i_mode = p9mode2unixmode(v9ses, stat->mode); 13862bad8471SEric Van Hensbergen if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode))) { 13872bad8471SEric Van Hensbergen char type = 0; 13882bad8471SEric Van Hensbergen int major = -1; 13892bad8471SEric Van Hensbergen int minor = -1; 1390531b1094SLatchesar Ionkov 139151a87c55SEric Van Hensbergen strncpy(ext, stat->extension, sizeof(ext)); 1392531b1094SLatchesar Ionkov sscanf(ext, "%c %u %u", &type, &major, &minor); 13932bad8471SEric Van Hensbergen switch (type) { 13942bad8471SEric Van Hensbergen case 'c': 13952bad8471SEric Van Hensbergen inode->i_mode &= ~S_IFBLK; 13962bad8471SEric Van Hensbergen inode->i_mode |= S_IFCHR; 13972bad8471SEric Van Hensbergen break; 13982bad8471SEric Van Hensbergen case 'b': 13992bad8471SEric Van Hensbergen break; 14002bad8471SEric Van Hensbergen default: 1401bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_ERROR, 140251a87c55SEric Van Hensbergen "Unknown special type %c %s\n", type, 140351a87c55SEric Van Hensbergen stat->extension); 14042bad8471SEric Van Hensbergen }; 14052bad8471SEric Van Hensbergen inode->i_rdev = MKDEV(major, minor); 140657c7b4e6SMagnus Deininger init_special_inode(inode, inode->i_mode, inode->i_rdev); 14072bad8471SEric Van Hensbergen } else 14082bad8471SEric Van Hensbergen inode->i_rdev = 0; 14092bad8471SEric Van Hensbergen 14107549ae3eSAbhishek Kulkarni i_size_write(inode, stat->length); 14112bad8471SEric Van Hensbergen 1412bd238fb4SLatchesar Ionkov /* not real number of blocks, but 512 byte ones ... */ 14137549ae3eSAbhishek Kulkarni inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9; 14142bad8471SEric Van Hensbergen } 14152bad8471SEric Van Hensbergen 14162bad8471SEric Van Hensbergen /** 1417f0853122SSripathi Kodi * v9fs_stat2inode_dotl - populate an inode structure with stat info 1418f0853122SSripathi Kodi * @stat: stat structure 1419f0853122SSripathi Kodi * @inode: inode to populate 1420f0853122SSripathi Kodi * @sb: superblock of filesystem 1421f0853122SSripathi Kodi * 1422f0853122SSripathi Kodi */ 1423f0853122SSripathi Kodi 1424f0853122SSripathi Kodi void 1425f0853122SSripathi Kodi v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode) 1426f0853122SSripathi Kodi { 1427f0853122SSripathi Kodi 1428f0853122SSripathi Kodi if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) { 1429f0853122SSripathi Kodi inode->i_atime.tv_sec = stat->st_atime_sec; 1430f0853122SSripathi Kodi inode->i_atime.tv_nsec = stat->st_atime_nsec; 1431f0853122SSripathi Kodi inode->i_mtime.tv_sec = stat->st_mtime_sec; 1432f0853122SSripathi Kodi inode->i_mtime.tv_nsec = stat->st_mtime_nsec; 1433f0853122SSripathi Kodi inode->i_ctime.tv_sec = stat->st_ctime_sec; 1434f0853122SSripathi Kodi inode->i_ctime.tv_nsec = stat->st_ctime_nsec; 1435f0853122SSripathi Kodi inode->i_uid = stat->st_uid; 1436f0853122SSripathi Kodi inode->i_gid = stat->st_gid; 1437f0853122SSripathi Kodi inode->i_nlink = stat->st_nlink; 1438f0853122SSripathi Kodi inode->i_mode = stat->st_mode; 1439f0853122SSripathi Kodi inode->i_rdev = new_decode_dev(stat->st_rdev); 1440f0853122SSripathi Kodi 1441f0853122SSripathi Kodi if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode))) 1442f0853122SSripathi Kodi init_special_inode(inode, inode->i_mode, inode->i_rdev); 1443f0853122SSripathi Kodi 1444f0853122SSripathi Kodi i_size_write(inode, stat->st_size); 1445f0853122SSripathi Kodi inode->i_blocks = stat->st_blocks; 1446f0853122SSripathi Kodi } else { 1447f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_ATIME) { 1448f0853122SSripathi Kodi inode->i_atime.tv_sec = stat->st_atime_sec; 1449f0853122SSripathi Kodi inode->i_atime.tv_nsec = stat->st_atime_nsec; 1450f0853122SSripathi Kodi } 1451f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_MTIME) { 1452f0853122SSripathi Kodi inode->i_mtime.tv_sec = stat->st_mtime_sec; 1453f0853122SSripathi Kodi inode->i_mtime.tv_nsec = stat->st_mtime_nsec; 1454f0853122SSripathi Kodi } 1455f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_CTIME) { 1456f0853122SSripathi Kodi inode->i_ctime.tv_sec = stat->st_ctime_sec; 1457f0853122SSripathi Kodi inode->i_ctime.tv_nsec = stat->st_ctime_nsec; 1458f0853122SSripathi Kodi } 1459f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_UID) 1460f0853122SSripathi Kodi inode->i_uid = stat->st_uid; 1461f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_GID) 1462f0853122SSripathi Kodi inode->i_gid = stat->st_gid; 1463f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_NLINK) 1464f0853122SSripathi Kodi inode->i_nlink = stat->st_nlink; 1465f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_MODE) { 1466f0853122SSripathi Kodi inode->i_mode = stat->st_mode; 1467f0853122SSripathi Kodi if ((S_ISBLK(inode->i_mode)) || 1468f0853122SSripathi Kodi (S_ISCHR(inode->i_mode))) 1469f0853122SSripathi Kodi init_special_inode(inode, inode->i_mode, 1470f0853122SSripathi Kodi inode->i_rdev); 1471f0853122SSripathi Kodi } 1472f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_RDEV) 1473f0853122SSripathi Kodi inode->i_rdev = new_decode_dev(stat->st_rdev); 1474f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_SIZE) 1475f0853122SSripathi Kodi i_size_write(inode, stat->st_size); 1476f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_BLOCKS) 1477f0853122SSripathi Kodi inode->i_blocks = stat->st_blocks; 1478f0853122SSripathi Kodi } 1479f0853122SSripathi Kodi if (stat->st_result_mask & P9_STATS_GEN) 1480f0853122SSripathi Kodi inode->i_generation = stat->st_gen; 1481f0853122SSripathi Kodi 1482f0853122SSripathi Kodi /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION 1483f0853122SSripathi Kodi * because the inode structure does not have fields for them. 1484f0853122SSripathi Kodi */ 1485f0853122SSripathi Kodi } 1486f0853122SSripathi Kodi 1487f0853122SSripathi Kodi /** 14882bad8471SEric Van Hensbergen * v9fs_qid2ino - convert qid into inode number 14892bad8471SEric Van Hensbergen * @qid: qid to hash 14902bad8471SEric Van Hensbergen * 14912bad8471SEric Van Hensbergen * BUG: potential for inode number collisions? 14922bad8471SEric Van Hensbergen */ 14932bad8471SEric Van Hensbergen 1494bd238fb4SLatchesar Ionkov ino_t v9fs_qid2ino(struct p9_qid *qid) 14952bad8471SEric Van Hensbergen { 14962bad8471SEric Van Hensbergen u64 path = qid->path + 2; 14972bad8471SEric Van Hensbergen ino_t i = 0; 14982bad8471SEric Van Hensbergen 14992bad8471SEric Van Hensbergen if (sizeof(ino_t) == sizeof(path)) 15002bad8471SEric Van Hensbergen memcpy(&i, &path, sizeof(ino_t)); 15012bad8471SEric Van Hensbergen else 15022bad8471SEric Van Hensbergen i = (ino_t) (path ^ (path >> 32)); 15032bad8471SEric Van Hensbergen 15042bad8471SEric Van Hensbergen return i; 15052bad8471SEric Van Hensbergen } 15062bad8471SEric Van Hensbergen 15072bad8471SEric Van Hensbergen /** 15082bad8471SEric Van Hensbergen * v9fs_readlink - read a symlink's location (internal version) 15092bad8471SEric Van Hensbergen * @dentry: dentry for symlink 151073c592b9SEric Van Hensbergen * @buffer: buffer to load symlink location into 15112bad8471SEric Van Hensbergen * @buflen: length of buffer 15122bad8471SEric Van Hensbergen * 15132bad8471SEric Van Hensbergen */ 15142bad8471SEric Van Hensbergen 15152bad8471SEric Van Hensbergen static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen) 15162bad8471SEric Van Hensbergen { 1517bd238fb4SLatchesar Ionkov int retval; 15182bad8471SEric Van Hensbergen 1519bd238fb4SLatchesar Ionkov struct v9fs_session_info *v9ses; 1520bd238fb4SLatchesar Ionkov struct p9_fid *fid; 152151a87c55SEric Van Hensbergen struct p9_wstat *st; 15222bad8471SEric Van Hensbergen 1523bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, " %s\n", dentry->d_name.name); 1524bd238fb4SLatchesar Ionkov retval = -EPERM; 1525bd238fb4SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dentry->d_inode); 1526bd238fb4SLatchesar Ionkov fid = v9fs_fid_lookup(dentry); 1527da977b2cSEric Van Hensbergen if (IS_ERR(fid)) 1528da977b2cSEric Van Hensbergen return PTR_ERR(fid); 15292bad8471SEric Van Hensbergen 153050cc42ffSVenkateswararao Jujjuri (JV) if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) 1531bd238fb4SLatchesar Ionkov return -EBADF; 15322bad8471SEric Van Hensbergen 1533bd238fb4SLatchesar Ionkov st = p9_client_stat(fid); 1534bd238fb4SLatchesar Ionkov if (IS_ERR(st)) 1535bd238fb4SLatchesar Ionkov return PTR_ERR(st); 15362bad8471SEric Van Hensbergen 1537bd238fb4SLatchesar Ionkov if (!(st->mode & P9_DMSYMLINK)) { 15382bad8471SEric Van Hensbergen retval = -EINVAL; 1539bd238fb4SLatchesar Ionkov goto done; 15402bad8471SEric Van Hensbergen } 15412bad8471SEric Van Hensbergen 15422bad8471SEric Van Hensbergen /* copy extension buffer into buffer */ 154351a87c55SEric Van Hensbergen strncpy(buffer, st->extension, buflen); 15442bad8471SEric Van Hensbergen 1545bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, 154651a87c55SEric Van Hensbergen "%s -> %s (%s)\n", dentry->d_name.name, st->extension, buffer); 1547bd238fb4SLatchesar Ionkov 15482511cd0bSMartin Stava retval = strnlen(buffer, buflen); 1549bd238fb4SLatchesar Ionkov done: 155062b2be59SLatchesar Ionkov p9stat_free(st); 1551bd238fb4SLatchesar Ionkov kfree(st); 15522bad8471SEric Van Hensbergen return retval; 15532bad8471SEric Van Hensbergen } 15542bad8471SEric Van Hensbergen 15552bad8471SEric Van Hensbergen /** 15562bad8471SEric Van Hensbergen * v9fs_vfs_follow_link - follow a symlink path 15572bad8471SEric Van Hensbergen * @dentry: dentry for symlink 15582bad8471SEric Van Hensbergen * @nd: nameidata 15592bad8471SEric Van Hensbergen * 15602bad8471SEric Van Hensbergen */ 15612bad8471SEric Van Hensbergen 15622bad8471SEric Van Hensbergen static void *v9fs_vfs_follow_link(struct dentry *dentry, struct nameidata *nd) 15632bad8471SEric Van Hensbergen { 15642bad8471SEric Van Hensbergen int len = 0; 15652bad8471SEric Van Hensbergen char *link = __getname(); 15662bad8471SEric Van Hensbergen 1567bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, "%s n", dentry->d_name.name); 15682bad8471SEric Van Hensbergen 15692bad8471SEric Van Hensbergen if (!link) 15702bad8471SEric Van Hensbergen link = ERR_PTR(-ENOMEM); 15712bad8471SEric Van Hensbergen else { 157216cce6d2SLatchesar Ionkov len = v9fs_readlink(dentry, link, PATH_MAX); 15732bad8471SEric Van Hensbergen 15742bad8471SEric Van Hensbergen if (len < 0) { 1575ce44eeb6SDavi Arnaut __putname(link); 15762bad8471SEric Van Hensbergen link = ERR_PTR(len); 15772bad8471SEric Van Hensbergen } else 15782511cd0bSMartin Stava link[min(len, PATH_MAX-1)] = 0; 15792bad8471SEric Van Hensbergen } 15802bad8471SEric Van Hensbergen nd_set_link(nd, link); 15812bad8471SEric Van Hensbergen 15822bad8471SEric Van Hensbergen return NULL; 15832bad8471SEric Van Hensbergen } 15842bad8471SEric Van Hensbergen 15852bad8471SEric Van Hensbergen /** 15862bad8471SEric Van Hensbergen * v9fs_vfs_put_link - release a symlink path 15872bad8471SEric Van Hensbergen * @dentry: dentry for symlink 15882bad8471SEric Van Hensbergen * @nd: nameidata 1589ee443996SEric Van Hensbergen * @p: unused 15902bad8471SEric Van Hensbergen * 15912bad8471SEric Van Hensbergen */ 15922bad8471SEric Van Hensbergen 1593ee443996SEric Van Hensbergen static void 1594ee443996SEric Van Hensbergen v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) 15952bad8471SEric Van Hensbergen { 15962bad8471SEric Van Hensbergen char *s = nd_get_link(nd); 15972bad8471SEric Van Hensbergen 15986ff23207SDuane Griffin P9_DPRINTK(P9_DEBUG_VFS, " %s %s\n", dentry->d_name.name, 15996ff23207SDuane Griffin IS_ERR(s) ? "<error>" : s); 16002bad8471SEric Van Hensbergen if (!IS_ERR(s)) 1601ce44eeb6SDavi Arnaut __putname(s); 16022bad8471SEric Van Hensbergen } 16032bad8471SEric Van Hensbergen 1604ee443996SEric Van Hensbergen /** 1605ee443996SEric Van Hensbergen * v9fs_vfs_mkspecial - create a special file 1606ee443996SEric Van Hensbergen * @dir: inode to create special file in 1607ee443996SEric Van Hensbergen * @dentry: dentry to create 1608ee443996SEric Van Hensbergen * @mode: mode to create special file 1609ee443996SEric Van Hensbergen * @extension: 9p2000.u format extension string representing special file 1610ee443996SEric Van Hensbergen * 1611ee443996SEric Van Hensbergen */ 1612ee443996SEric Van Hensbergen 1613531b1094SLatchesar Ionkov static int v9fs_vfs_mkspecial(struct inode *dir, struct dentry *dentry, 1614531b1094SLatchesar Ionkov int mode, const char *extension) 1615531b1094SLatchesar Ionkov { 1616bd238fb4SLatchesar Ionkov u32 perm; 1617531b1094SLatchesar Ionkov struct v9fs_session_info *v9ses; 1618bd238fb4SLatchesar Ionkov struct p9_fid *fid; 1619531b1094SLatchesar Ionkov 16206a3124a3SLatchesar Ionkov v9ses = v9fs_inode2v9ses(dir); 1621dd6102fbSSripathi Kodi if (!v9fs_proto_dotu(v9ses)) { 1622bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_ERROR, "not extended\n"); 16236a3124a3SLatchesar Ionkov return -EPERM; 1624531b1094SLatchesar Ionkov } 1625531b1094SLatchesar Ionkov 1626da977b2cSEric Van Hensbergen perm = unixmode2p9mode(v9ses, mode); 1627bd238fb4SLatchesar Ionkov fid = v9fs_create(v9ses, dir, dentry, (char *) extension, perm, 1628bd238fb4SLatchesar Ionkov P9_OREAD); 1629bd238fb4SLatchesar Ionkov if (IS_ERR(fid)) 1630bd238fb4SLatchesar Ionkov return PTR_ERR(fid); 1631da977b2cSEric Van Hensbergen 1632bd238fb4SLatchesar Ionkov p9_client_clunk(fid); 16336a3124a3SLatchesar Ionkov return 0; 1634531b1094SLatchesar Ionkov } 1635531b1094SLatchesar Ionkov 1636531b1094SLatchesar Ionkov /** 163750cc42ffSVenkateswararao Jujjuri (JV) * v9fs_vfs_symlink_dotl - helper function to create symlinks 163850cc42ffSVenkateswararao Jujjuri (JV) * @dir: directory inode containing symlink 163950cc42ffSVenkateswararao Jujjuri (JV) * @dentry: dentry for symlink 164050cc42ffSVenkateswararao Jujjuri (JV) * @symname: symlink data 164150cc42ffSVenkateswararao Jujjuri (JV) * 164250cc42ffSVenkateswararao Jujjuri (JV) * See Also: 9P2000.L RFC for more information 164350cc42ffSVenkateswararao Jujjuri (JV) * 164450cc42ffSVenkateswararao Jujjuri (JV) */ 164550cc42ffSVenkateswararao Jujjuri (JV) 164650cc42ffSVenkateswararao Jujjuri (JV) static int 164750cc42ffSVenkateswararao Jujjuri (JV) v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry, 164850cc42ffSVenkateswararao Jujjuri (JV) const char *symname) 164950cc42ffSVenkateswararao Jujjuri (JV) { 165050cc42ffSVenkateswararao Jujjuri (JV) struct v9fs_session_info *v9ses; 165150cc42ffSVenkateswararao Jujjuri (JV) struct p9_fid *dfid; 165250cc42ffSVenkateswararao Jujjuri (JV) struct p9_fid *fid = NULL; 165350cc42ffSVenkateswararao Jujjuri (JV) struct inode *inode; 165450cc42ffSVenkateswararao Jujjuri (JV) struct p9_qid qid; 165550cc42ffSVenkateswararao Jujjuri (JV) char *name; 165650cc42ffSVenkateswararao Jujjuri (JV) int err; 165750cc42ffSVenkateswararao Jujjuri (JV) gid_t gid; 165850cc42ffSVenkateswararao Jujjuri (JV) 165950cc42ffSVenkateswararao Jujjuri (JV) name = (char *) dentry->d_name.name; 166050cc42ffSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "v9fs_vfs_symlink_dotl : %lu,%s,%s\n", 166150cc42ffSVenkateswararao Jujjuri (JV) dir->i_ino, name, symname); 166250cc42ffSVenkateswararao Jujjuri (JV) v9ses = v9fs_inode2v9ses(dir); 166350cc42ffSVenkateswararao Jujjuri (JV) 166450cc42ffSVenkateswararao Jujjuri (JV) dfid = v9fs_fid_lookup(dentry->d_parent); 166550cc42ffSVenkateswararao Jujjuri (JV) if (IS_ERR(dfid)) { 166650cc42ffSVenkateswararao Jujjuri (JV) err = PTR_ERR(dfid); 166750cc42ffSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); 166850cc42ffSVenkateswararao Jujjuri (JV) return err; 166950cc42ffSVenkateswararao Jujjuri (JV) } 167050cc42ffSVenkateswararao Jujjuri (JV) 167150cc42ffSVenkateswararao Jujjuri (JV) gid = v9fs_get_fsgid_for_create(dir); 167250cc42ffSVenkateswararao Jujjuri (JV) 167350cc42ffSVenkateswararao Jujjuri (JV) /* Server doesn't alter fid on TSYMLINK. Hence no need to clone it. */ 167450cc42ffSVenkateswararao Jujjuri (JV) err = p9_client_symlink(dfid, name, (char *)symname, gid, &qid); 167550cc42ffSVenkateswararao Jujjuri (JV) 167650cc42ffSVenkateswararao Jujjuri (JV) if (err < 0) { 167750cc42ffSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "p9_client_symlink failed %d\n", err); 167850cc42ffSVenkateswararao Jujjuri (JV) goto error; 167950cc42ffSVenkateswararao Jujjuri (JV) } 168050cc42ffSVenkateswararao Jujjuri (JV) 168150cc42ffSVenkateswararao Jujjuri (JV) if (v9ses->cache) { 168250cc42ffSVenkateswararao Jujjuri (JV) /* Now walk from the parent so we can get an unopened fid. */ 168350cc42ffSVenkateswararao Jujjuri (JV) fid = p9_client_walk(dfid, 1, &name, 1); 168450cc42ffSVenkateswararao Jujjuri (JV) if (IS_ERR(fid)) { 168550cc42ffSVenkateswararao Jujjuri (JV) err = PTR_ERR(fid); 168650cc42ffSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", 168750cc42ffSVenkateswararao Jujjuri (JV) err); 168850cc42ffSVenkateswararao Jujjuri (JV) fid = NULL; 168950cc42ffSVenkateswararao Jujjuri (JV) goto error; 169050cc42ffSVenkateswararao Jujjuri (JV) } 169150cc42ffSVenkateswararao Jujjuri (JV) 169250cc42ffSVenkateswararao Jujjuri (JV) /* instantiate inode and assign the unopened fid to dentry */ 169350cc42ffSVenkateswararao Jujjuri (JV) inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); 169450cc42ffSVenkateswararao Jujjuri (JV) if (IS_ERR(inode)) { 169550cc42ffSVenkateswararao Jujjuri (JV) err = PTR_ERR(inode); 169650cc42ffSVenkateswararao Jujjuri (JV) P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", 169750cc42ffSVenkateswararao Jujjuri (JV) err); 169850cc42ffSVenkateswararao Jujjuri (JV) goto error; 169950cc42ffSVenkateswararao Jujjuri (JV) } 170050cc42ffSVenkateswararao Jujjuri (JV) dentry->d_op = &v9fs_cached_dentry_operations; 170150cc42ffSVenkateswararao Jujjuri (JV) d_instantiate(dentry, inode); 170250cc42ffSVenkateswararao Jujjuri (JV) err = v9fs_fid_add(dentry, fid); 170350cc42ffSVenkateswararao Jujjuri (JV) if (err < 0) 170450cc42ffSVenkateswararao Jujjuri (JV) goto error; 170550cc42ffSVenkateswararao Jujjuri (JV) fid = NULL; 170650cc42ffSVenkateswararao Jujjuri (JV) } else { 170750cc42ffSVenkateswararao Jujjuri (JV) /* Not in cached mode. No need to populate inode with stat */ 170850cc42ffSVenkateswararao Jujjuri (JV) inode = v9fs_get_inode(dir->i_sb, S_IFLNK); 170950cc42ffSVenkateswararao Jujjuri (JV) if (IS_ERR(inode)) { 171050cc42ffSVenkateswararao Jujjuri (JV) err = PTR_ERR(inode); 171150cc42ffSVenkateswararao Jujjuri (JV) goto error; 171250cc42ffSVenkateswararao Jujjuri (JV) } 171350cc42ffSVenkateswararao Jujjuri (JV) dentry->d_op = &v9fs_dentry_operations; 171450cc42ffSVenkateswararao Jujjuri (JV) d_instantiate(dentry, inode); 171550cc42ffSVenkateswararao Jujjuri (JV) } 171650cc42ffSVenkateswararao Jujjuri (JV) 171750cc42ffSVenkateswararao Jujjuri (JV) error: 171850cc42ffSVenkateswararao Jujjuri (JV) if (fid) 171950cc42ffSVenkateswararao Jujjuri (JV) p9_client_clunk(fid); 172050cc42ffSVenkateswararao Jujjuri (JV) 172150cc42ffSVenkateswararao Jujjuri (JV) return err; 172250cc42ffSVenkateswararao Jujjuri (JV) } 172350cc42ffSVenkateswararao Jujjuri (JV) 172450cc42ffSVenkateswararao Jujjuri (JV) /** 1725531b1094SLatchesar Ionkov * v9fs_vfs_symlink - helper function to create symlinks 1726531b1094SLatchesar Ionkov * @dir: directory inode containing symlink 1727531b1094SLatchesar Ionkov * @dentry: dentry for symlink 1728531b1094SLatchesar Ionkov * @symname: symlink data 1729531b1094SLatchesar Ionkov * 1730ee443996SEric Van Hensbergen * See Also: 9P2000.u RFC for more information 1731531b1094SLatchesar Ionkov * 1732531b1094SLatchesar Ionkov */ 1733531b1094SLatchesar Ionkov 1734531b1094SLatchesar Ionkov static int 1735531b1094SLatchesar Ionkov v9fs_vfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) 1736531b1094SLatchesar Ionkov { 1737bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, " %lu,%s,%s\n", dir->i_ino, 1738bd238fb4SLatchesar Ionkov dentry->d_name.name, symname); 1739531b1094SLatchesar Ionkov 1740531b1094SLatchesar Ionkov return v9fs_vfs_mkspecial(dir, dentry, S_IFLNK, symname); 1741531b1094SLatchesar Ionkov } 1742531b1094SLatchesar Ionkov 17432bad8471SEric Van Hensbergen /** 17442bad8471SEric Van Hensbergen * v9fs_vfs_link - create a hardlink 17452bad8471SEric Van Hensbergen * @old_dentry: dentry for file to link to 17462bad8471SEric Van Hensbergen * @dir: inode destination for new link 174773c592b9SEric Van Hensbergen * @dentry: dentry for link 17482bad8471SEric Van Hensbergen * 17492bad8471SEric Van Hensbergen */ 17502bad8471SEric Van Hensbergen 17512bad8471SEric Van Hensbergen static int 17522bad8471SEric Van Hensbergen v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir, 17532bad8471SEric Van Hensbergen struct dentry *dentry) 17542bad8471SEric Van Hensbergen { 1755531b1094SLatchesar Ionkov int retval; 1756bd238fb4SLatchesar Ionkov struct p9_fid *oldfid; 1757531b1094SLatchesar Ionkov char *name; 17582bad8471SEric Van Hensbergen 1759bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, 1760bd238fb4SLatchesar Ionkov " %lu,%s,%s\n", dir->i_ino, dentry->d_name.name, 17612bad8471SEric Van Hensbergen old_dentry->d_name.name); 17622bad8471SEric Van Hensbergen 1763da977b2cSEric Van Hensbergen oldfid = v9fs_fid_clone(old_dentry); 1764da977b2cSEric Van Hensbergen if (IS_ERR(oldfid)) 1765da977b2cSEric Van Hensbergen return PTR_ERR(oldfid); 17662bad8471SEric Van Hensbergen 1767531b1094SLatchesar Ionkov name = __getname(); 1768da977b2cSEric Van Hensbergen if (unlikely(!name)) { 1769da977b2cSEric Van Hensbergen retval = -ENOMEM; 1770da977b2cSEric Van Hensbergen goto clunk_fid; 1771da977b2cSEric Van Hensbergen } 17720710d36aSFlorin Malita 177316cce6d2SLatchesar Ionkov sprintf(name, "%d\n", oldfid->fid); 1774bd238fb4SLatchesar Ionkov retval = v9fs_vfs_mkspecial(dir, dentry, P9_DMLINK, name); 1775531b1094SLatchesar Ionkov __putname(name); 17762bad8471SEric Van Hensbergen 1777da977b2cSEric Van Hensbergen clunk_fid: 1778bd238fb4SLatchesar Ionkov p9_client_clunk(oldfid); 17792bad8471SEric Van Hensbergen return retval; 17802bad8471SEric Van Hensbergen } 17812bad8471SEric Van Hensbergen 17822bad8471SEric Van Hensbergen /** 178309d34ee5SEric Van Hensbergen * v9fs_vfs_link_dotl - create a hardlink for dotl 178409d34ee5SEric Van Hensbergen * @old_dentry: dentry for file to link to 178509d34ee5SEric Van Hensbergen * @dir: inode destination for new link 178609d34ee5SEric Van Hensbergen * @dentry: dentry for link 178709d34ee5SEric Van Hensbergen * 178809d34ee5SEric Van Hensbergen */ 178909d34ee5SEric Van Hensbergen 179009d34ee5SEric Van Hensbergen static int 179109d34ee5SEric Van Hensbergen v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, 179209d34ee5SEric Van Hensbergen struct dentry *dentry) 179309d34ee5SEric Van Hensbergen { 179409d34ee5SEric Van Hensbergen int err; 179509d34ee5SEric Van Hensbergen struct p9_fid *dfid, *oldfid; 179609d34ee5SEric Van Hensbergen char *name; 179709d34ee5SEric Van Hensbergen struct v9fs_session_info *v9ses; 179809d34ee5SEric Van Hensbergen struct dentry *dir_dentry; 179909d34ee5SEric Van Hensbergen 180009d34ee5SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "dir ino: %lu, old_name: %s, new_name: %s\n", 180109d34ee5SEric Van Hensbergen dir->i_ino, old_dentry->d_name.name, 180209d34ee5SEric Van Hensbergen dentry->d_name.name); 180309d34ee5SEric Van Hensbergen 180409d34ee5SEric Van Hensbergen v9ses = v9fs_inode2v9ses(dir); 180509d34ee5SEric Van Hensbergen dir_dentry = v9fs_dentry_from_dir_inode(dir); 180609d34ee5SEric Van Hensbergen dfid = v9fs_fid_lookup(dir_dentry); 180709d34ee5SEric Van Hensbergen if (IS_ERR(dfid)) 180809d34ee5SEric Van Hensbergen return PTR_ERR(dfid); 180909d34ee5SEric Van Hensbergen 181009d34ee5SEric Van Hensbergen oldfid = v9fs_fid_lookup(old_dentry); 181109d34ee5SEric Van Hensbergen if (IS_ERR(oldfid)) 181209d34ee5SEric Van Hensbergen return PTR_ERR(oldfid); 181309d34ee5SEric Van Hensbergen 181409d34ee5SEric Van Hensbergen name = (char *) dentry->d_name.name; 181509d34ee5SEric Van Hensbergen 181609d34ee5SEric Van Hensbergen err = p9_client_link(dfid, oldfid, (char *)dentry->d_name.name); 181709d34ee5SEric Van Hensbergen 181809d34ee5SEric Van Hensbergen if (err < 0) { 181909d34ee5SEric Van Hensbergen P9_DPRINTK(P9_DEBUG_VFS, "p9_client_link failed %d\n", err); 182009d34ee5SEric Van Hensbergen return err; 182109d34ee5SEric Van Hensbergen } 182209d34ee5SEric Van Hensbergen 182309d34ee5SEric Van Hensbergen if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { 182409d34ee5SEric Van Hensbergen /* Get the latest stat info from server. */ 182509d34ee5SEric Van Hensbergen struct p9_fid *fid; 182609d34ee5SEric Van Hensbergen struct p9_stat_dotl *st; 182709d34ee5SEric Van Hensbergen 182809d34ee5SEric Van Hensbergen fid = v9fs_fid_lookup(old_dentry); 182909d34ee5SEric Van Hensbergen if (IS_ERR(fid)) 183009d34ee5SEric Van Hensbergen return PTR_ERR(fid); 183109d34ee5SEric Van Hensbergen 183209d34ee5SEric Van Hensbergen st = p9_client_getattr_dotl(fid, P9_STATS_BASIC); 183309d34ee5SEric Van Hensbergen if (IS_ERR(st)) 183409d34ee5SEric Van Hensbergen return PTR_ERR(st); 183509d34ee5SEric Van Hensbergen 183609d34ee5SEric Van Hensbergen v9fs_stat2inode_dotl(st, old_dentry->d_inode); 183709d34ee5SEric Van Hensbergen 183809d34ee5SEric Van Hensbergen kfree(st); 183909d34ee5SEric Van Hensbergen } else { 184009d34ee5SEric Van Hensbergen /* Caching disabled. No need to get upto date stat info. 18417de9c6eeSAl Viro * This dentry will be released immediately. So, just hold the 18427de9c6eeSAl Viro * inode 184309d34ee5SEric Van Hensbergen */ 18447de9c6eeSAl Viro ihold(old_dentry->d_inode); 184509d34ee5SEric Van Hensbergen } 184609d34ee5SEric Van Hensbergen 184709d34ee5SEric Van Hensbergen dentry->d_op = old_dentry->d_op; 184809d34ee5SEric Van Hensbergen d_instantiate(dentry, old_dentry->d_inode); 184909d34ee5SEric Van Hensbergen 185009d34ee5SEric Van Hensbergen return err; 185109d34ee5SEric Van Hensbergen } 185209d34ee5SEric Van Hensbergen 185309d34ee5SEric Van Hensbergen /** 18542bad8471SEric Van Hensbergen * v9fs_vfs_mknod - create a special file 18552bad8471SEric Van Hensbergen * @dir: inode destination for new link 18562bad8471SEric Van Hensbergen * @dentry: dentry for file 18572bad8471SEric Van Hensbergen * @mode: mode for creation 1858ee443996SEric Van Hensbergen * @rdev: device associated with special file 18592bad8471SEric Van Hensbergen * 18602bad8471SEric Van Hensbergen */ 18612bad8471SEric Van Hensbergen 18622bad8471SEric Van Hensbergen static int 18632bad8471SEric Van Hensbergen v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) 18642bad8471SEric Van Hensbergen { 1865531b1094SLatchesar Ionkov int retval; 1866531b1094SLatchesar Ionkov char *name; 18672bad8471SEric Van Hensbergen 1868bd238fb4SLatchesar Ionkov P9_DPRINTK(P9_DEBUG_VFS, 1869bd238fb4SLatchesar Ionkov " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino, 18702bad8471SEric Van Hensbergen dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev)); 18712bad8471SEric Van Hensbergen 1872531b1094SLatchesar Ionkov if (!new_valid_dev(rdev)) 1873531b1094SLatchesar Ionkov return -EINVAL; 187473c592b9SEric Van Hensbergen 1875531b1094SLatchesar Ionkov name = __getname(); 1876c0291a05SEugene Teo if (!name) 1877c0291a05SEugene Teo return -ENOMEM; 18782bad8471SEric Van Hensbergen /* build extension */ 18792bad8471SEric Van Hensbergen if (S_ISBLK(mode)) 1880531b1094SLatchesar Ionkov sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev)); 18812bad8471SEric Van Hensbergen else if (S_ISCHR(mode)) 1882531b1094SLatchesar Ionkov sprintf(name, "c %u %u", MAJOR(rdev), MINOR(rdev)); 188373c592b9SEric Van Hensbergen else if (S_ISFIFO(mode)) 1884531b1094SLatchesar Ionkov *name = 0; 188575cc5c9bSVenkateswararao Jujjuri else if (S_ISSOCK(mode)) 188675cc5c9bSVenkateswararao Jujjuri *name = 0; 18872bad8471SEric Van Hensbergen else { 1888531b1094SLatchesar Ionkov __putname(name); 1889531b1094SLatchesar Ionkov return -EINVAL; 18902bad8471SEric Van Hensbergen } 18912bad8471SEric Van Hensbergen 1892531b1094SLatchesar Ionkov retval = v9fs_vfs_mkspecial(dir, dentry, mode, name); 1893531b1094SLatchesar Ionkov __putname(name); 18942bad8471SEric Van Hensbergen 18952bad8471SEric Van Hensbergen return retval; 18962bad8471SEric Van Hensbergen } 18972bad8471SEric Van Hensbergen 18984b43516aSM. Mohan Kumar /** 18994b43516aSM. Mohan Kumar * v9fs_vfs_mknod_dotl - create a special file 19004b43516aSM. Mohan Kumar * @dir: inode destination for new link 19014b43516aSM. Mohan Kumar * @dentry: dentry for file 19024b43516aSM. Mohan Kumar * @mode: mode for creation 19034b43516aSM. Mohan Kumar * @rdev: device associated with special file 19044b43516aSM. Mohan Kumar * 19054b43516aSM. Mohan Kumar */ 19064b43516aSM. Mohan Kumar static int 1907ad77dbceSAneesh Kumar K.V v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int omode, 19084b43516aSM. Mohan Kumar dev_t rdev) 19094b43516aSM. Mohan Kumar { 19104b43516aSM. Mohan Kumar int err; 19114b43516aSM. Mohan Kumar char *name; 1912ad77dbceSAneesh Kumar K.V mode_t mode; 19134b43516aSM. Mohan Kumar struct v9fs_session_info *v9ses; 19144b43516aSM. Mohan Kumar struct p9_fid *fid = NULL, *dfid = NULL; 19154b43516aSM. Mohan Kumar struct inode *inode; 19164b43516aSM. Mohan Kumar gid_t gid; 19174b43516aSM. Mohan Kumar struct p9_qid qid; 191801a622bdSM. Mohan Kumar struct dentry *dir_dentry; 1919ad77dbceSAneesh Kumar K.V struct posix_acl *dacl = NULL, *pacl = NULL; 19204b43516aSM. Mohan Kumar 19214b43516aSM. Mohan Kumar P9_DPRINTK(P9_DEBUG_VFS, 19224b43516aSM. Mohan Kumar " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino, 1923ad77dbceSAneesh Kumar K.V dentry->d_name.name, omode, MAJOR(rdev), MINOR(rdev)); 19244b43516aSM. Mohan Kumar 19254b43516aSM. Mohan Kumar if (!new_valid_dev(rdev)) 19264b43516aSM. Mohan Kumar return -EINVAL; 19274b43516aSM. Mohan Kumar 19284b43516aSM. Mohan Kumar v9ses = v9fs_inode2v9ses(dir); 19294b43516aSM. Mohan Kumar dir_dentry = v9fs_dentry_from_dir_inode(dir); 193001a622bdSM. Mohan Kumar dfid = v9fs_fid_lookup(dir_dentry); 19314b43516aSM. Mohan Kumar if (IS_ERR(dfid)) { 19324b43516aSM. Mohan Kumar err = PTR_ERR(dfid); 19334b43516aSM. Mohan Kumar P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err); 19344b43516aSM. Mohan Kumar dfid = NULL; 19354b43516aSM. Mohan Kumar goto error; 19364b43516aSM. Mohan Kumar } 19374b43516aSM. Mohan Kumar 19384b43516aSM. Mohan Kumar gid = v9fs_get_fsgid_for_create(dir); 1939ad77dbceSAneesh Kumar K.V mode = omode; 1940ad77dbceSAneesh Kumar K.V /* Update mode based on ACL value */ 1941ad77dbceSAneesh Kumar K.V err = v9fs_acl_mode(dir, &mode, &dacl, &pacl); 1942ad77dbceSAneesh Kumar K.V if (err) { 1943ad77dbceSAneesh Kumar K.V P9_DPRINTK(P9_DEBUG_VFS, 1944ad77dbceSAneesh Kumar K.V "Failed to get acl values in mknod %d\n", err); 1945ad77dbceSAneesh Kumar K.V goto error; 1946ad77dbceSAneesh Kumar K.V } 19474b43516aSM. Mohan Kumar name = (char *) dentry->d_name.name; 19484b43516aSM. Mohan Kumar 19494b43516aSM. Mohan Kumar err = p9_client_mknod_dotl(dfid, name, mode, rdev, gid, &qid); 19504b43516aSM. Mohan Kumar if (err < 0) 19514b43516aSM. Mohan Kumar goto error; 19524b43516aSM. Mohan Kumar 19534b43516aSM. Mohan Kumar /* instantiate inode and assign the unopened fid to the dentry */ 19544b43516aSM. Mohan Kumar if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { 19554b43516aSM. Mohan Kumar fid = p9_client_walk(dfid, 1, &name, 1); 19564b43516aSM. Mohan Kumar if (IS_ERR(fid)) { 19574b43516aSM. Mohan Kumar err = PTR_ERR(fid); 19584b43516aSM. Mohan Kumar P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", 19594b43516aSM. Mohan Kumar err); 19604b43516aSM. Mohan Kumar fid = NULL; 19614b43516aSM. Mohan Kumar goto error; 19624b43516aSM. Mohan Kumar } 19634b43516aSM. Mohan Kumar 19644b43516aSM. Mohan Kumar inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); 19654b43516aSM. Mohan Kumar if (IS_ERR(inode)) { 19664b43516aSM. Mohan Kumar err = PTR_ERR(inode); 19674b43516aSM. Mohan Kumar P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", 19684b43516aSM. Mohan Kumar err); 19694b43516aSM. Mohan Kumar goto error; 19704b43516aSM. Mohan Kumar } 19714b43516aSM. Mohan Kumar dentry->d_op = &v9fs_cached_dentry_operations; 19724b43516aSM. Mohan Kumar d_instantiate(dentry, inode); 19734b43516aSM. Mohan Kumar err = v9fs_fid_add(dentry, fid); 19744b43516aSM. Mohan Kumar if (err < 0) 19754b43516aSM. Mohan Kumar goto error; 19764b43516aSM. Mohan Kumar fid = NULL; 19774b43516aSM. Mohan Kumar } else { 19784b43516aSM. Mohan Kumar /* 19794b43516aSM. Mohan Kumar * Not in cached mode. No need to populate inode with stat. 19804b43516aSM. Mohan Kumar * socket syscall returns a fd, so we need instantiate 19814b43516aSM. Mohan Kumar */ 19824b43516aSM. Mohan Kumar inode = v9fs_get_inode(dir->i_sb, mode); 19834b43516aSM. Mohan Kumar if (IS_ERR(inode)) { 19844b43516aSM. Mohan Kumar err = PTR_ERR(inode); 19854b43516aSM. Mohan Kumar goto error; 19864b43516aSM. Mohan Kumar } 19874b43516aSM. Mohan Kumar dentry->d_op = &v9fs_dentry_operations; 19884b43516aSM. Mohan Kumar d_instantiate(dentry, inode); 19894b43516aSM. Mohan Kumar } 1990ad77dbceSAneesh Kumar K.V /* Now set the ACL based on the default value */ 1991ad77dbceSAneesh Kumar K.V v9fs_set_create_acl(dentry, dacl, pacl); 19924b43516aSM. Mohan Kumar error: 19934b43516aSM. Mohan Kumar if (fid) 19944b43516aSM. Mohan Kumar p9_client_clunk(fid); 19954b43516aSM. Mohan Kumar return err; 19964b43516aSM. Mohan Kumar } 19974b43516aSM. Mohan Kumar 19989b6533c9SSripathi Kodi static const struct inode_operations v9fs_dir_inode_operations_dotu = { 19999b6533c9SSripathi Kodi .create = v9fs_vfs_create, 20009b6533c9SSripathi Kodi .lookup = v9fs_vfs_lookup, 20019b6533c9SSripathi Kodi .symlink = v9fs_vfs_symlink, 200250cc42ffSVenkateswararao Jujjuri (JV) .link = v9fs_vfs_link, 20039b6533c9SSripathi Kodi .unlink = v9fs_vfs_unlink, 20049b6533c9SSripathi Kodi .mkdir = v9fs_vfs_mkdir, 20059b6533c9SSripathi Kodi .rmdir = v9fs_vfs_rmdir, 20061d76e313SAneesh Kumar K.V .mknod = v9fs_vfs_mknod, 20079b6533c9SSripathi Kodi .rename = v9fs_vfs_rename, 20089b6533c9SSripathi Kodi .getattr = v9fs_vfs_getattr, 20099b6533c9SSripathi Kodi .setattr = v9fs_vfs_setattr, 20109b6533c9SSripathi Kodi }; 20119b6533c9SSripathi Kodi 20129b6533c9SSripathi Kodi static const struct inode_operations v9fs_dir_inode_operations_dotl = { 20135643135aSVenkateswararao Jujjuri (JV) .create = v9fs_vfs_create_dotl, 20142bad8471SEric Van Hensbergen .lookup = v9fs_vfs_lookup, 201550cc42ffSVenkateswararao Jujjuri (JV) .link = v9fs_vfs_link_dotl, 201650cc42ffSVenkateswararao Jujjuri (JV) .symlink = v9fs_vfs_symlink_dotl, 20172bad8471SEric Van Hensbergen .unlink = v9fs_vfs_unlink, 201801a622bdSM. Mohan Kumar .mkdir = v9fs_vfs_mkdir_dotl, 20192bad8471SEric Van Hensbergen .rmdir = v9fs_vfs_rmdir, 20204b43516aSM. Mohan Kumar .mknod = v9fs_vfs_mknod_dotl, 20212bad8471SEric Van Hensbergen .rename = v9fs_vfs_rename, 2022f0853122SSripathi Kodi .getattr = v9fs_vfs_getattr_dotl, 202387d7845aSSripathi Kodi .setattr = v9fs_vfs_setattr_dotl, 2024ebf46264SAneesh Kumar K.V .setxattr = generic_setxattr, 2025ebf46264SAneesh Kumar K.V .getxattr = generic_getxattr, 2026ebf46264SAneesh Kumar K.V .removexattr = generic_removexattr, 2027ebf46264SAneesh Kumar K.V .listxattr = v9fs_listxattr, 202885ff872dSAneesh Kumar K.V .check_acl = v9fs_check_acl, 20292bad8471SEric Van Hensbergen }; 20302bad8471SEric Van Hensbergen 2031754661f1SArjan van de Ven static const struct inode_operations v9fs_dir_inode_operations = { 2032b501611aSEric Van Hensbergen .create = v9fs_vfs_create, 2033b501611aSEric Van Hensbergen .lookup = v9fs_vfs_lookup, 2034b501611aSEric Van Hensbergen .unlink = v9fs_vfs_unlink, 2035b501611aSEric Van Hensbergen .mkdir = v9fs_vfs_mkdir, 2036b501611aSEric Van Hensbergen .rmdir = v9fs_vfs_rmdir, 2037b501611aSEric Van Hensbergen .mknod = v9fs_vfs_mknod, 2038b501611aSEric Van Hensbergen .rename = v9fs_vfs_rename, 2039b501611aSEric Van Hensbergen .getattr = v9fs_vfs_getattr, 2040b501611aSEric Van Hensbergen .setattr = v9fs_vfs_setattr, 2041b501611aSEric Van Hensbergen }; 2042b501611aSEric Van Hensbergen 2043754661f1SArjan van de Ven static const struct inode_operations v9fs_file_inode_operations = { 20442bad8471SEric Van Hensbergen .getattr = v9fs_vfs_getattr, 20452bad8471SEric Van Hensbergen .setattr = v9fs_vfs_setattr, 20462bad8471SEric Van Hensbergen }; 20472bad8471SEric Van Hensbergen 20489b6533c9SSripathi Kodi static const struct inode_operations v9fs_file_inode_operations_dotl = { 2049f0853122SSripathi Kodi .getattr = v9fs_vfs_getattr_dotl, 205087d7845aSSripathi Kodi .setattr = v9fs_vfs_setattr_dotl, 2051ebf46264SAneesh Kumar K.V .setxattr = generic_setxattr, 2052ebf46264SAneesh Kumar K.V .getxattr = generic_getxattr, 2053ebf46264SAneesh Kumar K.V .removexattr = generic_removexattr, 2054ebf46264SAneesh Kumar K.V .listxattr = v9fs_listxattr, 205585ff872dSAneesh Kumar K.V .check_acl = v9fs_check_acl, 20569b6533c9SSripathi Kodi }; 20579b6533c9SSripathi Kodi 2058754661f1SArjan van de Ven static const struct inode_operations v9fs_symlink_inode_operations = { 2059204f2f0eSAl Viro .readlink = generic_readlink, 20602bad8471SEric Van Hensbergen .follow_link = v9fs_vfs_follow_link, 20612bad8471SEric Van Hensbergen .put_link = v9fs_vfs_put_link, 20622bad8471SEric Van Hensbergen .getattr = v9fs_vfs_getattr, 20632bad8471SEric Van Hensbergen .setattr = v9fs_vfs_setattr, 20642bad8471SEric Van Hensbergen }; 20659b6533c9SSripathi Kodi 20669b6533c9SSripathi Kodi static const struct inode_operations v9fs_symlink_inode_operations_dotl = { 20679b6533c9SSripathi Kodi .readlink = generic_readlink, 20689b6533c9SSripathi Kodi .follow_link = v9fs_vfs_follow_link, 20699b6533c9SSripathi Kodi .put_link = v9fs_vfs_put_link, 2070f0853122SSripathi Kodi .getattr = v9fs_vfs_getattr_dotl, 207187d7845aSSripathi Kodi .setattr = v9fs_vfs_setattr_dotl, 2072ebf46264SAneesh Kumar K.V .setxattr = generic_setxattr, 2073ebf46264SAneesh Kumar K.V .getxattr = generic_getxattr, 2074ebf46264SAneesh Kumar K.V .removexattr = generic_removexattr, 2075ebf46264SAneesh Kumar K.V .listxattr = v9fs_listxattr, 20769b6533c9SSripathi Kodi }; 2077