12ab9cd1cSSteven Whitehouse /* 22ab9cd1cSSteven Whitehouse * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 3f2741d98SSteven Whitehouse * Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved. 42ab9cd1cSSteven Whitehouse * 52ab9cd1cSSteven Whitehouse * This copyrighted material is made available to anyone wishing to use, 62ab9cd1cSSteven Whitehouse * modify, copy, or redistribute it subject to the terms and conditions 72ab9cd1cSSteven Whitehouse * of the GNU General Public License version 2. 82ab9cd1cSSteven Whitehouse */ 92ab9cd1cSSteven Whitehouse 102ab9cd1cSSteven Whitehouse #include <linux/slab.h> 112ab9cd1cSSteven Whitehouse #include <linux/spinlock.h> 122ab9cd1cSSteven Whitehouse #include <linux/completion.h> 132ab9cd1cSSteven Whitehouse #include <linux/buffer_head.h> 142ab9cd1cSSteven Whitehouse #include <linux/namei.h> 152ab9cd1cSSteven Whitehouse #include <linux/mm.h> 165b825c3aSIngo Molnar #include <linux/cred.h> 172ab9cd1cSSteven Whitehouse #include <linux/xattr.h> 182ab9cd1cSSteven Whitehouse #include <linux/posix_acl.h> 192ab9cd1cSSteven Whitehouse #include <linux/gfs2_ondisk.h> 202ab9cd1cSSteven Whitehouse #include <linux/crc32.h> 212ab9cd1cSSteven Whitehouse #include <linux/fiemap.h> 222ab9cd1cSSteven Whitehouse #include <linux/security.h> 237c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 242ab9cd1cSSteven Whitehouse 252ab9cd1cSSteven Whitehouse #include "gfs2.h" 262ab9cd1cSSteven Whitehouse #include "incore.h" 272ab9cd1cSSteven Whitehouse #include "acl.h" 282ab9cd1cSSteven Whitehouse #include "bmap.h" 292ab9cd1cSSteven Whitehouse #include "dir.h" 302ab9cd1cSSteven Whitehouse #include "xattr.h" 312ab9cd1cSSteven Whitehouse #include "glock.h" 322ab9cd1cSSteven Whitehouse #include "inode.h" 332ab9cd1cSSteven Whitehouse #include "meta_io.h" 342ab9cd1cSSteven Whitehouse #include "quota.h" 352ab9cd1cSSteven Whitehouse #include "rgrp.h" 362ab9cd1cSSteven Whitehouse #include "trans.h" 372ab9cd1cSSteven Whitehouse #include "util.h" 382ab9cd1cSSteven Whitehouse #include "super.h" 392ab9cd1cSSteven Whitehouse #include "glops.h" 402ab9cd1cSSteven Whitehouse 41cda9dd42SAndreas Gruenbacher static int iget_test(struct inode *inode, void *opaque) 422ab9cd1cSSteven Whitehouse { 43cda9dd42SAndreas Gruenbacher u64 no_addr = *(u64 *)opaque; 44cda9dd42SAndreas Gruenbacher 45cda9dd42SAndreas Gruenbacher return GFS2_I(inode)->i_no_addr == no_addr; 46cda9dd42SAndreas Gruenbacher } 47cda9dd42SAndreas Gruenbacher 48cda9dd42SAndreas Gruenbacher static int iget_set(struct inode *inode, void *opaque) 49cda9dd42SAndreas Gruenbacher { 50cda9dd42SAndreas Gruenbacher u64 no_addr = *(u64 *)opaque; 51cda9dd42SAndreas Gruenbacher 52cda9dd42SAndreas Gruenbacher GFS2_I(inode)->i_no_addr = no_addr; 53cda9dd42SAndreas Gruenbacher inode->i_ino = no_addr; 54cda9dd42SAndreas Gruenbacher return 0; 55cda9dd42SAndreas Gruenbacher } 56cda9dd42SAndreas Gruenbacher 573ce37b2cSAndreas Gruenbacher static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr) 583ce37b2cSAndreas Gruenbacher { 593ce37b2cSAndreas Gruenbacher struct inode *inode; 603ce37b2cSAndreas Gruenbacher 613ce37b2cSAndreas Gruenbacher repeat: 62cda9dd42SAndreas Gruenbacher inode = iget5_locked(sb, no_addr, iget_test, iget_set, &no_addr); 633ce37b2cSAndreas Gruenbacher if (!inode) 643ce37b2cSAndreas Gruenbacher return inode; 653ce37b2cSAndreas Gruenbacher if (is_bad_inode(inode)) { 663ce37b2cSAndreas Gruenbacher iput(inode); 673ce37b2cSAndreas Gruenbacher goto repeat; 683ce37b2cSAndreas Gruenbacher } 693ce37b2cSAndreas Gruenbacher return inode; 702ab9cd1cSSteven Whitehouse } 712ab9cd1cSSteven Whitehouse 722ab9cd1cSSteven Whitehouse /** 732ab9cd1cSSteven Whitehouse * gfs2_set_iop - Sets inode operations 742ab9cd1cSSteven Whitehouse * @inode: The inode with correct i_mode filled in 752ab9cd1cSSteven Whitehouse * 762ab9cd1cSSteven Whitehouse * GFS2 lookup code fills in vfs inode contents based on info obtained 772ab9cd1cSSteven Whitehouse * from directory entry inside gfs2_inode_lookup(). 782ab9cd1cSSteven Whitehouse */ 792ab9cd1cSSteven Whitehouse 802ab9cd1cSSteven Whitehouse static void gfs2_set_iop(struct inode *inode) 812ab9cd1cSSteven Whitehouse { 822ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 832ab9cd1cSSteven Whitehouse umode_t mode = inode->i_mode; 842ab9cd1cSSteven Whitehouse 852ab9cd1cSSteven Whitehouse if (S_ISREG(mode)) { 862ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_file_iops; 872ab9cd1cSSteven Whitehouse if (gfs2_localflocks(sdp)) 882ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_file_fops_nolock; 892ab9cd1cSSteven Whitehouse else 902ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_file_fops; 912ab9cd1cSSteven Whitehouse } else if (S_ISDIR(mode)) { 922ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_dir_iops; 932ab9cd1cSSteven Whitehouse if (gfs2_localflocks(sdp)) 942ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_dir_fops_nolock; 952ab9cd1cSSteven Whitehouse else 962ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_dir_fops; 972ab9cd1cSSteven Whitehouse } else if (S_ISLNK(mode)) { 982ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_symlink_iops; 992ab9cd1cSSteven Whitehouse } else { 1002ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_file_iops; 1012ab9cd1cSSteven Whitehouse init_special_inode(inode, inode->i_mode, inode->i_rdev); 1022ab9cd1cSSteven Whitehouse } 1032ab9cd1cSSteven Whitehouse } 1042ab9cd1cSSteven Whitehouse 1052ab9cd1cSSteven Whitehouse /** 1062ab9cd1cSSteven Whitehouse * gfs2_inode_lookup - Lookup an inode 1072ab9cd1cSSteven Whitehouse * @sb: The super block 1082ab9cd1cSSteven Whitehouse * @type: The type of the inode 1093ce37b2cSAndreas Gruenbacher * @no_addr: The inode number 1103ce37b2cSAndreas Gruenbacher * @no_formal_ino: The inode generation number 1113ce37b2cSAndreas Gruenbacher * @blktype: Requested block type (GFS2_BLKST_DINODE or GFS2_BLKST_UNLINKED; 1123ce37b2cSAndreas Gruenbacher * GFS2_BLKST_FREE do indicate not to verify) 1133ce37b2cSAndreas Gruenbacher * 1143ce37b2cSAndreas Gruenbacher * If @type is DT_UNKNOWN, the inode type is fetched from disk. 1153ce37b2cSAndreas Gruenbacher * 1163ce37b2cSAndreas Gruenbacher * If @blktype is anything other than GFS2_BLKST_FREE (which is used as a 1173ce37b2cSAndreas Gruenbacher * placeholder because it doesn't otherwise make sense), the on-disk block type 1183ce37b2cSAndreas Gruenbacher * is verified to be @blktype. 1192ab9cd1cSSteven Whitehouse * 1202ab9cd1cSSteven Whitehouse * Returns: A VFS inode, or an error 1212ab9cd1cSSteven Whitehouse */ 1222ab9cd1cSSteven Whitehouse 1232ab9cd1cSSteven Whitehouse struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, 1243ce37b2cSAndreas Gruenbacher u64 no_addr, u64 no_formal_ino, 1253ce37b2cSAndreas Gruenbacher unsigned int blktype) 1262ab9cd1cSSteven Whitehouse { 1272ab9cd1cSSteven Whitehouse struct inode *inode; 1282ab9cd1cSSteven Whitehouse struct gfs2_inode *ip; 1292ab9cd1cSSteven Whitehouse struct gfs2_glock *io_gl = NULL; 1303ce37b2cSAndreas Gruenbacher struct gfs2_holder i_gh; 1312ab9cd1cSSteven Whitehouse int error; 1322ab9cd1cSSteven Whitehouse 1336df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&i_gh); 1343ce37b2cSAndreas Gruenbacher inode = gfs2_iget(sb, no_addr); 1352ab9cd1cSSteven Whitehouse if (!inode) 136ac3beb6aSSteven Whitehouse return ERR_PTR(-ENOMEM); 1372ab9cd1cSSteven Whitehouse 138e97321faSBob Peterson ip = GFS2_I(inode); 139e97321faSBob Peterson 1402ab9cd1cSSteven Whitehouse if (inode->i_state & I_NEW) { 1412ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 1422ab9cd1cSSteven Whitehouse ip->i_no_formal_ino = no_formal_ino; 1432ab9cd1cSSteven Whitehouse 1442ab9cd1cSSteven Whitehouse error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); 1452ab9cd1cSSteven Whitehouse if (unlikely(error)) 1462ab9cd1cSSteven Whitehouse goto fail; 1474fd1a579SAndreas Gruenbacher flush_delayed_work(&ip->i_gl->gl_work); 1484fd1a579SAndreas Gruenbacher glock_set_object(ip->i_gl, ip); 1492ab9cd1cSSteven Whitehouse 1502ab9cd1cSSteven Whitehouse error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl); 1512ab9cd1cSSteven Whitehouse if (unlikely(error)) 1522ab9cd1cSSteven Whitehouse goto fail_put; 1532ab9cd1cSSteven Whitehouse 1543ce37b2cSAndreas Gruenbacher if (type == DT_UNKNOWN || blktype != GFS2_BLKST_FREE) { 1553ce37b2cSAndreas Gruenbacher /* 1563ce37b2cSAndreas Gruenbacher * The GL_SKIP flag indicates to skip reading the inode 1573ce37b2cSAndreas Gruenbacher * block. We read the inode with gfs2_inode_refresh 1583ce37b2cSAndreas Gruenbacher * after possibly checking the block type. 1593ce37b2cSAndreas Gruenbacher */ 1603ce37b2cSAndreas Gruenbacher error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 1613ce37b2cSAndreas Gruenbacher GL_SKIP, &i_gh); 1623ce37b2cSAndreas Gruenbacher if (error) 1633ce37b2cSAndreas Gruenbacher goto fail_put; 1643ce37b2cSAndreas Gruenbacher 1653ce37b2cSAndreas Gruenbacher if (blktype != GFS2_BLKST_FREE) { 1663ce37b2cSAndreas Gruenbacher error = gfs2_check_blk_type(sdp, no_addr, 1673ce37b2cSAndreas Gruenbacher blktype); 1683ce37b2cSAndreas Gruenbacher if (error) 1693ce37b2cSAndreas Gruenbacher goto fail_put; 1703ce37b2cSAndreas Gruenbacher } 1713ce37b2cSAndreas Gruenbacher } 1723ce37b2cSAndreas Gruenbacher 1732ab9cd1cSSteven Whitehouse set_bit(GIF_INVALID, &ip->i_flags); 1742ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); 1752ab9cd1cSSteven Whitehouse if (unlikely(error)) 1763ce37b2cSAndreas Gruenbacher goto fail_put; 1774fd1a579SAndreas Gruenbacher flush_delayed_work(&ip->i_iopen_gh.gh_gl->gl_work); 1784fd1a579SAndreas Gruenbacher glock_set_object(ip->i_iopen_gh.gh_gl, ip); 1792ab9cd1cSSteven Whitehouse gfs2_glock_put(io_gl); 1802ab9cd1cSSteven Whitehouse io_gl = NULL; 1812ab9cd1cSSteven Whitehouse 1822ab9cd1cSSteven Whitehouse if (type == DT_UNKNOWN) { 1832ab9cd1cSSteven Whitehouse /* Inode glock must be locked already */ 1842ab9cd1cSSteven Whitehouse error = gfs2_inode_refresh(GFS2_I(inode)); 1852ab9cd1cSSteven Whitehouse if (error) 1862ab9cd1cSSteven Whitehouse goto fail_refresh; 1872ab9cd1cSSteven Whitehouse } else { 1882ab9cd1cSSteven Whitehouse inode->i_mode = DT2IF(type); 1892ab9cd1cSSteven Whitehouse } 1902ab9cd1cSSteven Whitehouse 1912ab9cd1cSSteven Whitehouse gfs2_set_iop(inode); 192332f51d7SAndreas Gruenbacher 193332f51d7SAndreas Gruenbacher inode->i_atime.tv_sec = 0; 194332f51d7SAndreas Gruenbacher inode->i_atime.tv_nsec = 0; 195332f51d7SAndreas Gruenbacher 1962ab9cd1cSSteven Whitehouse unlock_new_inode(inode); 1972ab9cd1cSSteven Whitehouse } 1982ab9cd1cSSteven Whitehouse 1996df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&i_gh)) 2003ce37b2cSAndreas Gruenbacher gfs2_glock_dq_uninit(&i_gh); 2012ab9cd1cSSteven Whitehouse return inode; 2022ab9cd1cSSteven Whitehouse 2032ab9cd1cSSteven Whitehouse fail_refresh: 204a6a4d98bSBob Peterson ip->i_iopen_gh.gh_flags |= GL_NOCACHE; 205*6f6597baSAndreas Gruenbacher glock_set_object(ip->i_iopen_gh.gh_gl, NULL); 206d4da3198SAndreas Gruenbacher gfs2_glock_dq_uninit(&ip->i_iopen_gh); 2073ce37b2cSAndreas Gruenbacher fail_put: 2082ab9cd1cSSteven Whitehouse if (io_gl) 2092ab9cd1cSSteven Whitehouse gfs2_glock_put(io_gl); 2106df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&i_gh)) 2113ce37b2cSAndreas Gruenbacher gfs2_glock_dq_uninit(&i_gh); 212*6f6597baSAndreas Gruenbacher glock_set_object(ip->i_gl, NULL); 2132ab9cd1cSSteven Whitehouse fail: 2142ab9cd1cSSteven Whitehouse iget_failed(inode); 2152ab9cd1cSSteven Whitehouse return ERR_PTR(error); 2162ab9cd1cSSteven Whitehouse } 2172ab9cd1cSSteven Whitehouse 2182ab9cd1cSSteven Whitehouse struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr, 2192ab9cd1cSSteven Whitehouse u64 *no_formal_ino, unsigned int blktype) 2202ab9cd1cSSteven Whitehouse { 2212ab9cd1cSSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 2223ce37b2cSAndreas Gruenbacher struct inode *inode; 2232ab9cd1cSSteven Whitehouse int error; 2242ab9cd1cSSteven Whitehouse 2253ce37b2cSAndreas Gruenbacher inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, 0, blktype); 2262ab9cd1cSSteven Whitehouse if (IS_ERR(inode)) 2273ce37b2cSAndreas Gruenbacher return inode; 2282ab9cd1cSSteven Whitehouse 2292ab9cd1cSSteven Whitehouse /* Two extra checks for NFS only */ 2302ab9cd1cSSteven Whitehouse if (no_formal_ino) { 2312ab9cd1cSSteven Whitehouse error = -ESTALE; 2322ab9cd1cSSteven Whitehouse if (GFS2_I(inode)->i_no_formal_ino != *no_formal_ino) 2332ab9cd1cSSteven Whitehouse goto fail_iput; 2342ab9cd1cSSteven Whitehouse 2352ab9cd1cSSteven Whitehouse error = -EIO; 2362ab9cd1cSSteven Whitehouse if (GFS2_I(inode)->i_diskflags & GFS2_DIF_SYSTEM) 2372ab9cd1cSSteven Whitehouse goto fail_iput; 2382ab9cd1cSSteven Whitehouse } 2393ce37b2cSAndreas Gruenbacher return inode; 2402ab9cd1cSSteven Whitehouse 2412ab9cd1cSSteven Whitehouse fail_iput: 2422ab9cd1cSSteven Whitehouse iput(inode); 2433ce37b2cSAndreas Gruenbacher return ERR_PTR(error); 2442ab9cd1cSSteven Whitehouse } 2452ab9cd1cSSteven Whitehouse 2462ab9cd1cSSteven Whitehouse 2472ab9cd1cSSteven Whitehouse struct inode *gfs2_lookup_simple(struct inode *dip, const char *name) 2482ab9cd1cSSteven Whitehouse { 2492ab9cd1cSSteven Whitehouse struct qstr qstr; 2502ab9cd1cSSteven Whitehouse struct inode *inode; 2512ab9cd1cSSteven Whitehouse gfs2_str2qstr(&qstr, name); 2522ab9cd1cSSteven Whitehouse inode = gfs2_lookupi(dip, &qstr, 1); 2532ab9cd1cSSteven Whitehouse /* gfs2_lookupi has inconsistent callers: vfs 2542ab9cd1cSSteven Whitehouse * related routines expect NULL for no entry found, 2552ab9cd1cSSteven Whitehouse * gfs2_lookup_simple callers expect ENOENT 2562ab9cd1cSSteven Whitehouse * and do not check for NULL. 2572ab9cd1cSSteven Whitehouse */ 2582ab9cd1cSSteven Whitehouse if (inode == NULL) 2592ab9cd1cSSteven Whitehouse return ERR_PTR(-ENOENT); 2602ab9cd1cSSteven Whitehouse else 2612ab9cd1cSSteven Whitehouse return inode; 2622ab9cd1cSSteven Whitehouse } 2632ab9cd1cSSteven Whitehouse 2642ab9cd1cSSteven Whitehouse 2652ab9cd1cSSteven Whitehouse /** 2662ab9cd1cSSteven Whitehouse * gfs2_lookupi - Look up a filename in a directory and return its inode 2672ab9cd1cSSteven Whitehouse * @d_gh: An initialized holder for the directory glock 2682ab9cd1cSSteven Whitehouse * @name: The name of the inode to look for 2692ab9cd1cSSteven Whitehouse * @is_root: If 1, ignore the caller's permissions 2702ab9cd1cSSteven Whitehouse * @i_gh: An uninitialized holder for the new inode glock 2712ab9cd1cSSteven Whitehouse * 2722ab9cd1cSSteven Whitehouse * This can be called via the VFS filldir function when NFS is doing 2732ab9cd1cSSteven Whitehouse * a readdirplus and the inode which its intending to stat isn't 2742ab9cd1cSSteven Whitehouse * already in cache. In this case we must not take the directory glock 2752ab9cd1cSSteven Whitehouse * again, since the readdir call will have already taken that lock. 2762ab9cd1cSSteven Whitehouse * 2772ab9cd1cSSteven Whitehouse * Returns: errno 2782ab9cd1cSSteven Whitehouse */ 2792ab9cd1cSSteven Whitehouse 2802ab9cd1cSSteven Whitehouse struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name, 2812ab9cd1cSSteven Whitehouse int is_root) 2822ab9cd1cSSteven Whitehouse { 2832ab9cd1cSSteven Whitehouse struct super_block *sb = dir->i_sb; 2842ab9cd1cSSteven Whitehouse struct gfs2_inode *dip = GFS2_I(dir); 2852ab9cd1cSSteven Whitehouse struct gfs2_holder d_gh; 2862ab9cd1cSSteven Whitehouse int error = 0; 2872ab9cd1cSSteven Whitehouse struct inode *inode = NULL; 2882ab9cd1cSSteven Whitehouse 2896df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&d_gh); 2902ab9cd1cSSteven Whitehouse if (!name->len || name->len > GFS2_FNAMESIZE) 2912ab9cd1cSSteven Whitehouse return ERR_PTR(-ENAMETOOLONG); 2922ab9cd1cSSteven Whitehouse 2932ab9cd1cSSteven Whitehouse if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) || 2942ab9cd1cSSteven Whitehouse (name->len == 2 && memcmp(name->name, "..", 2) == 0 && 2952b0143b5SDavid Howells dir == d_inode(sb->s_root))) { 2962ab9cd1cSSteven Whitehouse igrab(dir); 2972ab9cd1cSSteven Whitehouse return dir; 2982ab9cd1cSSteven Whitehouse } 2992ab9cd1cSSteven Whitehouse 3002ab9cd1cSSteven Whitehouse if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) { 3012ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh); 3022ab9cd1cSSteven Whitehouse if (error) 3032ab9cd1cSSteven Whitehouse return ERR_PTR(error); 3042ab9cd1cSSteven Whitehouse } 3052ab9cd1cSSteven Whitehouse 3062ab9cd1cSSteven Whitehouse if (!is_root) { 30710556cb2SAl Viro error = gfs2_permission(dir, MAY_EXEC); 3082ab9cd1cSSteven Whitehouse if (error) 3092ab9cd1cSSteven Whitehouse goto out; 3102ab9cd1cSSteven Whitehouse } 3112ab9cd1cSSteven Whitehouse 3125a00f3ccSSteven Whitehouse inode = gfs2_dir_search(dir, name, false); 3132ab9cd1cSSteven Whitehouse if (IS_ERR(inode)) 3142ab9cd1cSSteven Whitehouse error = PTR_ERR(inode); 3152ab9cd1cSSteven Whitehouse out: 3166df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&d_gh)) 3172ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&d_gh); 3182ab9cd1cSSteven Whitehouse if (error == -ENOENT) 3192ab9cd1cSSteven Whitehouse return NULL; 3202ab9cd1cSSteven Whitehouse return inode ? inode : ERR_PTR(error); 3212ab9cd1cSSteven Whitehouse } 3222ab9cd1cSSteven Whitehouse 3232ab9cd1cSSteven Whitehouse /** 3242ab9cd1cSSteven Whitehouse * create_ok - OK to create a new on-disk inode here? 3252ab9cd1cSSteven Whitehouse * @dip: Directory in which dinode is to be created 3262ab9cd1cSSteven Whitehouse * @name: Name of new dinode 3272ab9cd1cSSteven Whitehouse * @mode: 3282ab9cd1cSSteven Whitehouse * 3292ab9cd1cSSteven Whitehouse * Returns: errno 3302ab9cd1cSSteven Whitehouse */ 3312ab9cd1cSSteven Whitehouse 3322ab9cd1cSSteven Whitehouse static int create_ok(struct gfs2_inode *dip, const struct qstr *name, 333175a4eb7SAl Viro umode_t mode) 3342ab9cd1cSSteven Whitehouse { 3352ab9cd1cSSteven Whitehouse int error; 3362ab9cd1cSSteven Whitehouse 33710556cb2SAl Viro error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC); 3382ab9cd1cSSteven Whitehouse if (error) 3392ab9cd1cSSteven Whitehouse return error; 3402ab9cd1cSSteven Whitehouse 3412ab9cd1cSSteven Whitehouse /* Don't create entries in an unlinked directory */ 3422ab9cd1cSSteven Whitehouse if (!dip->i_inode.i_nlink) 3432ab9cd1cSSteven Whitehouse return -ENOENT; 3442ab9cd1cSSteven Whitehouse 3452ab9cd1cSSteven Whitehouse if (dip->i_entries == (u32)-1) 3462ab9cd1cSSteven Whitehouse return -EFBIG; 3472ab9cd1cSSteven Whitehouse if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1) 3482ab9cd1cSSteven Whitehouse return -EMLINK; 3492ab9cd1cSSteven Whitehouse 3502ab9cd1cSSteven Whitehouse return 0; 3512ab9cd1cSSteven Whitehouse } 3522ab9cd1cSSteven Whitehouse 353c9aecf73SSteven Whitehouse static void munge_mode_uid_gid(const struct gfs2_inode *dip, 354c9aecf73SSteven Whitehouse struct inode *inode) 3552ab9cd1cSSteven Whitehouse { 3562ab9cd1cSSteven Whitehouse if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir && 3576b24c0d2SEric W. Biederman (dip->i_inode.i_mode & S_ISUID) && 3586b24c0d2SEric W. Biederman !uid_eq(dip->i_inode.i_uid, GLOBAL_ROOT_UID)) { 359c9aecf73SSteven Whitehouse if (S_ISDIR(inode->i_mode)) 360c9aecf73SSteven Whitehouse inode->i_mode |= S_ISUID; 3616b24c0d2SEric W. Biederman else if (!uid_eq(dip->i_inode.i_uid, current_fsuid())) 362c9aecf73SSteven Whitehouse inode->i_mode &= ~07111; 363c9aecf73SSteven Whitehouse inode->i_uid = dip->i_inode.i_uid; 3642ab9cd1cSSteven Whitehouse } else 365c9aecf73SSteven Whitehouse inode->i_uid = current_fsuid(); 3662ab9cd1cSSteven Whitehouse 3672ab9cd1cSSteven Whitehouse if (dip->i_inode.i_mode & S_ISGID) { 368c9aecf73SSteven Whitehouse if (S_ISDIR(inode->i_mode)) 369c9aecf73SSteven Whitehouse inode->i_mode |= S_ISGID; 370c9aecf73SSteven Whitehouse inode->i_gid = dip->i_inode.i_gid; 3712ab9cd1cSSteven Whitehouse } else 372c9aecf73SSteven Whitehouse inode->i_gid = current_fsgid(); 3732ab9cd1cSSteven Whitehouse } 3742ab9cd1cSSteven Whitehouse 375b2c8b3eaSSteven Whitehouse static int alloc_dinode(struct gfs2_inode *ip, u32 flags, unsigned *dblocks) 3762ab9cd1cSSteven Whitehouse { 377c9aecf73SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 378b2c8b3eaSSteven Whitehouse struct gfs2_alloc_parms ap = { .target = *dblocks, .aflags = flags, }; 3792ab9cd1cSSteven Whitehouse int error; 3802ab9cd1cSSteven Whitehouse 381b8fbf471SAbhi Das error = gfs2_quota_lock_check(ip, &ap); 3822ab9cd1cSSteven Whitehouse if (error) 3832ab9cd1cSSteven Whitehouse goto out; 3842ab9cd1cSSteven Whitehouse 3857b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(ip, &ap); 386fd4b4e04SSteven Whitehouse if (error) 387fd4b4e04SSteven Whitehouse goto out_quota; 388fd4b4e04SSteven Whitehouse 389b2c8b3eaSSteven Whitehouse error = gfs2_trans_begin(sdp, (*dblocks * RES_RG_BIT) + RES_STATFS + RES_QUOTA, 0); 3902ab9cd1cSSteven Whitehouse if (error) 3912ab9cd1cSSteven Whitehouse goto out_ipreserv; 3922ab9cd1cSSteven Whitehouse 393b2c8b3eaSSteven Whitehouse error = gfs2_alloc_blocks(ip, &ip->i_no_addr, dblocks, 1, &ip->i_generation); 394c9aecf73SSteven Whitehouse ip->i_no_formal_ino = ip->i_generation; 395c9aecf73SSteven Whitehouse ip->i_inode.i_ino = ip->i_no_addr; 396c9aecf73SSteven Whitehouse ip->i_goal = ip->i_no_addr; 3972ab9cd1cSSteven Whitehouse 3982ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 3992ab9cd1cSSteven Whitehouse 4002ab9cd1cSSteven Whitehouse out_ipreserv: 401c9aecf73SSteven Whitehouse gfs2_inplace_release(ip); 402fd4b4e04SSteven Whitehouse out_quota: 403fd4b4e04SSteven Whitehouse gfs2_quota_unlock(ip); 4042ab9cd1cSSteven Whitehouse out: 4052ab9cd1cSSteven Whitehouse return error; 4062ab9cd1cSSteven Whitehouse } 4072ab9cd1cSSteven Whitehouse 408f2741d98SSteven Whitehouse static void gfs2_init_dir(struct buffer_head *dibh, 409f2741d98SSteven Whitehouse const struct gfs2_inode *parent) 410e2d0a13bSSteven Whitehouse { 411e2d0a13bSSteven Whitehouse struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data; 412e2d0a13bSSteven Whitehouse struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1); 413e2d0a13bSSteven Whitehouse 414e2d0a13bSSteven Whitehouse gfs2_qstr2dirent(&gfs2_qdot, GFS2_DIRENT_SIZE(gfs2_qdot.len), dent); 415e2d0a13bSSteven Whitehouse dent->de_inum = di->di_num; /* already GFS2 endian */ 416e2d0a13bSSteven Whitehouse dent->de_type = cpu_to_be16(DT_DIR); 417e2d0a13bSSteven Whitehouse 418e2d0a13bSSteven Whitehouse dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1)); 419e2d0a13bSSteven Whitehouse gfs2_qstr2dirent(&gfs2_qdotdot, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent); 420e2d0a13bSSteven Whitehouse gfs2_inum_out(parent, dent); 421e2d0a13bSSteven Whitehouse dent->de_type = cpu_to_be16(DT_DIR); 422e2d0a13bSSteven Whitehouse 423e2d0a13bSSteven Whitehouse } 424e2d0a13bSSteven Whitehouse 4252ab9cd1cSSteven Whitehouse /** 426b2c8b3eaSSteven Whitehouse * gfs2_init_xattr - Initialise an xattr block for a new inode 427b2c8b3eaSSteven Whitehouse * @ip: The inode in question 428b2c8b3eaSSteven Whitehouse * 429b2c8b3eaSSteven Whitehouse * This sets up an empty xattr block for a new inode, ready to 430b2c8b3eaSSteven Whitehouse * take any ACLs, LSM xattrs, etc. 431b2c8b3eaSSteven Whitehouse */ 432b2c8b3eaSSteven Whitehouse 433b2c8b3eaSSteven Whitehouse static void gfs2_init_xattr(struct gfs2_inode *ip) 434b2c8b3eaSSteven Whitehouse { 435b2c8b3eaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 436b2c8b3eaSSteven Whitehouse struct buffer_head *bh; 437b2c8b3eaSSteven Whitehouse struct gfs2_ea_header *ea; 438b2c8b3eaSSteven Whitehouse 439b2c8b3eaSSteven Whitehouse bh = gfs2_meta_new(ip->i_gl, ip->i_eattr); 440b2c8b3eaSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, bh); 441b2c8b3eaSSteven Whitehouse gfs2_metatype_set(bh, GFS2_METATYPE_EA, GFS2_FORMAT_EA); 442b2c8b3eaSSteven Whitehouse gfs2_buffer_clear_tail(bh, sizeof(struct gfs2_meta_header)); 443b2c8b3eaSSteven Whitehouse 444b2c8b3eaSSteven Whitehouse ea = GFS2_EA_BH2FIRST(bh); 445b2c8b3eaSSteven Whitehouse ea->ea_rec_len = cpu_to_be32(sdp->sd_jbsize); 446b2c8b3eaSSteven Whitehouse ea->ea_type = GFS2_EATYPE_UNUSED; 447b2c8b3eaSSteven Whitehouse ea->ea_flags = GFS2_EAFLAG_LAST; 448b2c8b3eaSSteven Whitehouse 449b2c8b3eaSSteven Whitehouse brelse(bh); 450b2c8b3eaSSteven Whitehouse } 451b2c8b3eaSSteven Whitehouse 452b2c8b3eaSSteven Whitehouse /** 4532ab9cd1cSSteven Whitehouse * init_dinode - Fill in a new dinode structure 454f2741d98SSteven Whitehouse * @dip: The directory this inode is being created in 455c9aecf73SSteven Whitehouse * @ip: The inode 456f2741d98SSteven Whitehouse * @symname: The symlink destination (if a symlink) 457f2741d98SSteven Whitehouse * @bhp: The buffer head (returned to caller) 4582ab9cd1cSSteven Whitehouse * 4592ab9cd1cSSteven Whitehouse */ 4602ab9cd1cSSteven Whitehouse 461c9aecf73SSteven Whitehouse static void init_dinode(struct gfs2_inode *dip, struct gfs2_inode *ip, 46279ba7480SSteven Whitehouse const char *symname) 4632ab9cd1cSSteven Whitehouse { 4642ab9cd1cSSteven Whitehouse struct gfs2_dinode *di; 4652ab9cd1cSSteven Whitehouse struct buffer_head *dibh; 4662ab9cd1cSSteven Whitehouse 467c9aecf73SSteven Whitehouse dibh = gfs2_meta_new(ip->i_gl, ip->i_no_addr); 468350a9b0aSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, dibh); 4692ab9cd1cSSteven Whitehouse di = (struct gfs2_dinode *)dibh->b_data; 47079ba7480SSteven Whitehouse gfs2_dinode_out(ip, di); 4712ab9cd1cSSteven Whitehouse 472c9aecf73SSteven Whitehouse di->di_major = cpu_to_be32(MAJOR(ip->i_inode.i_rdev)); 473c9aecf73SSteven Whitehouse di->di_minor = cpu_to_be32(MINOR(ip->i_inode.i_rdev)); 4742ab9cd1cSSteven Whitehouse di->__pad1 = 0; 4752ab9cd1cSSteven Whitehouse di->__pad2 = 0; 4762ab9cd1cSSteven Whitehouse di->__pad3 = 0; 4772ab9cd1cSSteven Whitehouse memset(&di->__pad4, 0, sizeof(di->__pad4)); 4782ab9cd1cSSteven Whitehouse memset(&di->di_reserved, 0, sizeof(di->di_reserved)); 47979ba7480SSteven Whitehouse gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode)); 4802ab9cd1cSSteven Whitehouse 481c9aecf73SSteven Whitehouse switch(ip->i_inode.i_mode & S_IFMT) { 482160b4026SSteven Whitehouse case S_IFDIR: 483e2d0a13bSSteven Whitehouse gfs2_init_dir(dibh, dip); 484160b4026SSteven Whitehouse break; 485160b4026SSteven Whitehouse case S_IFLNK: 486c9aecf73SSteven Whitehouse memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname, ip->i_inode.i_size); 487160b4026SSteven Whitehouse break; 488e2d0a13bSSteven Whitehouse } 489e2d0a13bSSteven Whitehouse 4902ab9cd1cSSteven Whitehouse set_buffer_uptodate(dibh); 49179ba7480SSteven Whitehouse brelse(dibh); 4922ab9cd1cSSteven Whitehouse } 4932ab9cd1cSSteven Whitehouse 494534cf9caSSteven Whitehouse /** 495534cf9caSSteven Whitehouse * gfs2_trans_da_blocks - Calculate number of blocks to link inode 496534cf9caSSteven Whitehouse * @dip: The directory we are linking into 497534cf9caSSteven Whitehouse * @da: The dir add information 498534cf9caSSteven Whitehouse * @nr_inodes: The number of inodes involved 499534cf9caSSteven Whitehouse * 500534cf9caSSteven Whitehouse * This calculate the number of blocks we need to reserve in a 501534cf9caSSteven Whitehouse * transaction to link @nr_inodes into a directory. In most cases 502534cf9caSSteven Whitehouse * @nr_inodes will be 2 (the directory plus the inode being linked in) 503534cf9caSSteven Whitehouse * but in case of rename, 4 may be required. 504534cf9caSSteven Whitehouse * 505534cf9caSSteven Whitehouse * Returns: Number of blocks 506534cf9caSSteven Whitehouse */ 507534cf9caSSteven Whitehouse 508534cf9caSSteven Whitehouse static unsigned gfs2_trans_da_blks(const struct gfs2_inode *dip, 509534cf9caSSteven Whitehouse const struct gfs2_diradd *da, 510534cf9caSSteven Whitehouse unsigned nr_inodes) 511534cf9caSSteven Whitehouse { 512534cf9caSSteven Whitehouse return da->nr_blocks + gfs2_rg_blocks(dip, da->nr_blocks) + 513534cf9caSSteven Whitehouse (nr_inodes * RES_DINODE) + RES_QUOTA + RES_STATFS; 514534cf9caSSteven Whitehouse } 515534cf9caSSteven Whitehouse 5162ab9cd1cSSteven Whitehouse static int link_dinode(struct gfs2_inode *dip, const struct qstr *name, 5173c1c0ae1SSteven Whitehouse struct gfs2_inode *ip, struct gfs2_diradd *da) 5182ab9cd1cSSteven Whitehouse { 5192ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); 5203c1c0ae1SSteven Whitehouse struct gfs2_alloc_parms ap = { .target = da->nr_blocks, }; 5212ab9cd1cSSteven Whitehouse int error; 5222ab9cd1cSSteven Whitehouse 5233c1c0ae1SSteven Whitehouse if (da->nr_blocks) { 524b8fbf471SAbhi Das error = gfs2_quota_lock_check(dip, &ap); 5252ab9cd1cSSteven Whitehouse if (error) 5262ab9cd1cSSteven Whitehouse goto fail_quota_locks; 5272ab9cd1cSSteven Whitehouse 5287b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(dip, &ap); 5292ab9cd1cSSteven Whitehouse if (error) 5302ab9cd1cSSteven Whitehouse goto fail_quota_locks; 5312ab9cd1cSSteven Whitehouse 532534cf9caSSteven Whitehouse error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(dip, da, 2), 0); 5332ab9cd1cSSteven Whitehouse if (error) 5342ab9cd1cSSteven Whitehouse goto fail_ipreserv; 5352ab9cd1cSSteven Whitehouse } else { 5362ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0); 5372ab9cd1cSSteven Whitehouse if (error) 5382ab9cd1cSSteven Whitehouse goto fail_quota_locks; 5392ab9cd1cSSteven Whitehouse } 5402ab9cd1cSSteven Whitehouse 5412b47dad8SSteven Whitehouse error = gfs2_dir_add(&dip->i_inode, name, ip, da); 5422ab9cd1cSSteven Whitehouse 5432ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 5442ab9cd1cSSteven Whitehouse fail_ipreserv: 5452ab9cd1cSSteven Whitehouse gfs2_inplace_release(dip); 5462ab9cd1cSSteven Whitehouse fail_quota_locks: 5472ab9cd1cSSteven Whitehouse gfs2_quota_unlock(dip); 5482ab9cd1cSSteven Whitehouse return error; 5492ab9cd1cSSteven Whitehouse } 5502ab9cd1cSSteven Whitehouse 55146cc1e5fSH Hartley Sweeten static int gfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array, 5529d8f13baSMimi Zohar void *fs_info) 5532ab9cd1cSSteven Whitehouse { 5549d8f13baSMimi Zohar const struct xattr *xattr; 5559d8f13baSMimi Zohar int err = 0; 5562ab9cd1cSSteven Whitehouse 5579d8f13baSMimi Zohar for (xattr = xattr_array; xattr->name != NULL; xattr++) { 5589d8f13baSMimi Zohar err = __gfs2_xattr_set(inode, xattr->name, xattr->value, 5599d8f13baSMimi Zohar xattr->value_len, 0, 5609d8f13baSMimi Zohar GFS2_EATYPE_SECURITY); 5619d8f13baSMimi Zohar if (err < 0) 5629d8f13baSMimi Zohar break; 5639d8f13baSMimi Zohar } 5642ab9cd1cSSteven Whitehouse return err; 5652ab9cd1cSSteven Whitehouse } 5662ab9cd1cSSteven Whitehouse 5672ab9cd1cSSteven Whitehouse /** 568f2741d98SSteven Whitehouse * gfs2_create_inode - Create a new inode 569f2741d98SSteven Whitehouse * @dir: The parent directory 570f2741d98SSteven Whitehouse * @dentry: The new dentry 5716d4ade98SSteven Whitehouse * @file: If non-NULL, the file which is being opened 572f2741d98SSteven Whitehouse * @mode: The permissions on the new inode 573f2741d98SSteven Whitehouse * @dev: For device nodes, this is the device number 574f2741d98SSteven Whitehouse * @symname: For symlinks, this is the link destination 575f2741d98SSteven Whitehouse * @size: The initial size of the inode (ignored for directories) 5762ab9cd1cSSteven Whitehouse * 577f2741d98SSteven Whitehouse * Returns: 0 on success, or error code 5782ab9cd1cSSteven Whitehouse */ 5792ab9cd1cSSteven Whitehouse 580f2741d98SSteven Whitehouse static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, 5816d4ade98SSteven Whitehouse struct file *file, 582175a4eb7SAl Viro umode_t mode, dev_t dev, const char *symname, 5836d4ade98SSteven Whitehouse unsigned int size, int excl, int *opened) 5842ab9cd1cSSteven Whitehouse { 585f2741d98SSteven Whitehouse const struct qstr *name = &dentry->d_name; 586e01580bfSChristoph Hellwig struct posix_acl *default_acl, *acl; 587f2741d98SSteven Whitehouse struct gfs2_holder ghs[2]; 5882ab9cd1cSSteven Whitehouse struct inode *inode = NULL; 5898e2e0047SBob Peterson struct gfs2_inode *dip = GFS2_I(dir), *ip; 5902ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); 591a4923865SBob Peterson struct gfs2_glock *io_gl = NULL; 592783013c0SBob Peterson int error, free_vfs_inode = 1; 5939dbe9610SSteven Whitehouse u32 aflags = 0; 594b2c8b3eaSSteven Whitehouse unsigned blocks = 1; 59519aeb5a6SBob Peterson struct gfs2_diradd da = { .bh = NULL, .save_loc = 1, }; 5962ab9cd1cSSteven Whitehouse 5972ab9cd1cSSteven Whitehouse if (!name->len || name->len > GFS2_FNAMESIZE) 598f2741d98SSteven Whitehouse return -ENAMETOOLONG; 5992ab9cd1cSSteven Whitehouse 600b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(dip); 6010a305e49SBob Peterson if (error) 6020a305e49SBob Peterson return error; 6030a305e49SBob Peterson 604fd4b4e04SSteven Whitehouse error = gfs2_rindex_update(sdp); 605fd4b4e04SSteven Whitehouse if (error) 606fd4b4e04SSteven Whitehouse return error; 607fd4b4e04SSteven Whitehouse 608f2741d98SSteven Whitehouse error = gfs2_glock_nq_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 6092ab9cd1cSSteven Whitehouse if (error) 6102ab9cd1cSSteven Whitehouse goto fail; 6112ab9cd1cSSteven Whitehouse 6122ab9cd1cSSteven Whitehouse error = create_ok(dip, name, mode); 6132ab9cd1cSSteven Whitehouse if (error) 6142ab9cd1cSSteven Whitehouse goto fail_gunlock; 6152ab9cd1cSSteven Whitehouse 6165a00f3ccSSteven Whitehouse inode = gfs2_dir_search(dir, &dentry->d_name, !S_ISREG(mode) || excl); 6175a00f3ccSSteven Whitehouse error = PTR_ERR(inode); 6185a00f3ccSSteven Whitehouse if (!IS_ERR(inode)) { 619571a4b57SAl Viro if (S_ISDIR(inode->i_mode)) { 620571a4b57SAl Viro iput(inode); 621571a4b57SAl Viro inode = ERR_PTR(-EISDIR); 622571a4b57SAl Viro goto fail_gunlock; 623571a4b57SAl Viro } 62444bb31baSAl Viro d_instantiate(dentry, inode); 6256d4ade98SSteven Whitehouse error = 0; 6260d0d1107SMiklos Szeredi if (file) { 62744bb31baSAl Viro if (S_ISREG(inode->i_mode)) 6285ca1db41SMiklos Szeredi error = finish_open(file, dentry, gfs2_open_common, opened); 62944bb31baSAl Viro else 63044bb31baSAl Viro error = finish_no_open(file, NULL); 6315ca1db41SMiklos Szeredi } 6325a00f3ccSSteven Whitehouse gfs2_glock_dq_uninit(ghs); 6336d4ade98SSteven Whitehouse return error; 6345a00f3ccSSteven Whitehouse } else if (error != -ENOENT) { 6355a00f3ccSSteven Whitehouse goto fail_gunlock; 6365a00f3ccSSteven Whitehouse } 6375a00f3ccSSteven Whitehouse 6383c1c0ae1SSteven Whitehouse error = gfs2_diradd_alloc_required(dir, name, &da); 639fd4b4e04SSteven Whitehouse if (error < 0) 640fd4b4e04SSteven Whitehouse goto fail_gunlock; 641fd4b4e04SSteven Whitehouse 642c9aecf73SSteven Whitehouse inode = new_inode(sdp->sd_vfs); 643fd4b4e04SSteven Whitehouse error = -ENOMEM; 644fd4b4e04SSteven Whitehouse if (!inode) 645fd4b4e04SSteven Whitehouse goto fail_gunlock; 646fd4b4e04SSteven Whitehouse 647e01580bfSChristoph Hellwig error = posix_acl_create(dir, &mode, &default_acl, &acl); 648e01580bfSChristoph Hellwig if (error) 649783013c0SBob Peterson goto fail_gunlock; 650e01580bfSChristoph Hellwig 6518e2e0047SBob Peterson ip = GFS2_I(inode); 652b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ip); 653ff7f4cb4SSteven Whitehouse if (error) 654e01580bfSChristoph Hellwig goto fail_free_acls; 655c9aecf73SSteven Whitehouse 656c9aecf73SSteven Whitehouse inode->i_mode = mode; 65779ba7480SSteven Whitehouse set_nlink(inode, S_ISDIR(mode) ? 2 : 1); 658c9aecf73SSteven Whitehouse inode->i_rdev = dev; 659c9aecf73SSteven Whitehouse inode->i_size = size; 660078cd827SDeepa Dinamani inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); 66128fb3027SSteven Whitehouse gfs2_set_inode_blocks(inode, 1); 662c9aecf73SSteven Whitehouse munge_mode_uid_gid(dip, inode); 66300a158beSAbhi Das check_and_update_goal(dip); 664c9aecf73SSteven Whitehouse ip->i_goal = dip->i_goal; 66528fb3027SSteven Whitehouse ip->i_diskflags = 0; 66628fb3027SSteven Whitehouse ip->i_eattr = 0; 66728fb3027SSteven Whitehouse ip->i_height = 0; 66828fb3027SSteven Whitehouse ip->i_depth = 0; 66928fb3027SSteven Whitehouse ip->i_entries = 0; 670cc963a11SBob Peterson ip->i_no_addr = 0; /* Temporarily zero until real addr is assigned */ 67128fb3027SSteven Whitehouse 67228fb3027SSteven Whitehouse switch(mode & S_IFMT) { 67328fb3027SSteven Whitehouse case S_IFREG: 67428fb3027SSteven Whitehouse if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) || 67528fb3027SSteven Whitehouse gfs2_tune_get(sdp, gt_new_files_jdata)) 67628fb3027SSteven Whitehouse ip->i_diskflags |= GFS2_DIF_JDATA; 67728fb3027SSteven Whitehouse gfs2_set_aops(inode); 67828fb3027SSteven Whitehouse break; 67928fb3027SSteven Whitehouse case S_IFDIR: 68028fb3027SSteven Whitehouse ip->i_diskflags |= (dip->i_diskflags & GFS2_DIF_INHERIT_JDATA); 68128fb3027SSteven Whitehouse ip->i_diskflags |= GFS2_DIF_JDATA; 68228fb3027SSteven Whitehouse ip->i_entries = 2; 68328fb3027SSteven Whitehouse break; 68428fb3027SSteven Whitehouse } 685acc546fdSAbhi Das 686acc546fdSAbhi Das /* Force SYSTEM flag on all files and subdirs of a SYSTEM directory */ 687acc546fdSAbhi Das if (dip->i_diskflags & GFS2_DIF_SYSTEM) 688acc546fdSAbhi Das ip->i_diskflags |= GFS2_DIF_SYSTEM; 689acc546fdSAbhi Das 69028fb3027SSteven Whitehouse gfs2_set_inode_flags(inode); 691c9aecf73SSteven Whitehouse 6922b0143b5SDavid Howells if ((GFS2_I(d_inode(sdp->sd_root_dir)) == dip) || 6939dbe9610SSteven Whitehouse (dip->i_diskflags & GFS2_DIF_TOPDIR)) 6949dbe9610SSteven Whitehouse aflags |= GFS2_AF_ORLOV; 6959dbe9610SSteven Whitehouse 696b2c8b3eaSSteven Whitehouse if (default_acl || acl) 697b2c8b3eaSSteven Whitehouse blocks++; 698b2c8b3eaSSteven Whitehouse 699b2c8b3eaSSteven Whitehouse error = alloc_dinode(ip, aflags, &blocks); 700c9aecf73SSteven Whitehouse if (error) 701c9aecf73SSteven Whitehouse goto fail_free_inode; 702c9aecf73SSteven Whitehouse 703b2c8b3eaSSteven Whitehouse gfs2_set_inode_blocks(inode, blocks); 704b2c8b3eaSSteven Whitehouse 705c9aecf73SSteven Whitehouse error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); 706c9aecf73SSteven Whitehouse if (error) 707c9aecf73SSteven Whitehouse goto fail_free_inode; 708c9aecf73SSteven Whitehouse 709*6f6597baSAndreas Gruenbacher glock_set_object(ip->i_gl, ip); 710c9aecf73SSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1); 711c9aecf73SSteven Whitehouse if (error) 712c9aecf73SSteven Whitehouse goto fail_free_inode; 713c9aecf73SSteven Whitehouse 714b2c8b3eaSSteven Whitehouse error = gfs2_trans_begin(sdp, blocks, 0); 715c9aecf73SSteven Whitehouse if (error) 716ff7f4cb4SSteven Whitehouse goto fail_gunlock2; 7170a305e49SBob Peterson 718b2c8b3eaSSteven Whitehouse if (blocks > 1) { 719b2c8b3eaSSteven Whitehouse ip->i_eattr = ip->i_no_addr + 1; 720b2c8b3eaSSteven Whitehouse gfs2_init_xattr(ip); 721b2c8b3eaSSteven Whitehouse } 72279ba7480SSteven Whitehouse init_dinode(dip, ip, symname); 723fd4b4e04SSteven Whitehouse gfs2_trans_end(sdp); 724fd4b4e04SSteven Whitehouse 725c9aecf73SSteven Whitehouse error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_iopen_glops, CREATE, &io_gl); 726c9aecf73SSteven Whitehouse if (error) 727c9aecf73SSteven Whitehouse goto fail_gunlock2; 728c9aecf73SSteven Whitehouse 729a4923865SBob Peterson BUG_ON(test_and_set_bit(GLF_INODE_CREATING, &io_gl->gl_flags)); 730a4923865SBob Peterson 731c9aecf73SSteven Whitehouse error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); 732c9aecf73SSteven Whitehouse if (error) 733c9aecf73SSteven Whitehouse goto fail_gunlock2; 734c9aecf73SSteven Whitehouse 735*6f6597baSAndreas Gruenbacher glock_set_object(ip->i_iopen_gh.gh_gl, ip); 736c9aecf73SSteven Whitehouse gfs2_glock_put(io_gl); 737c9aecf73SSteven Whitehouse gfs2_set_iop(inode); 738c9aecf73SSteven Whitehouse insert_inode_hash(inode); 739c9aecf73SSteven Whitehouse 740783013c0SBob Peterson free_vfs_inode = 0; /* After this point, the inode is no longer 741783013c0SBob Peterson considered free. Any failures need to undo 742783013c0SBob Peterson the gfs2 structures. */ 743e01580bfSChristoph Hellwig if (default_acl) { 7441a39ba99SAl Viro error = __gfs2_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); 745e01580bfSChristoph Hellwig posix_acl_release(default_acl); 746e01580bfSChristoph Hellwig } 747e01580bfSChristoph Hellwig if (acl) { 748e01580bfSChristoph Hellwig if (!error) 7491a39ba99SAl Viro error = __gfs2_set_acl(inode, acl, ACL_TYPE_ACCESS); 750e01580bfSChristoph Hellwig posix_acl_release(acl); 751e01580bfSChristoph Hellwig } 752e01580bfSChristoph Hellwig 7532ab9cd1cSSteven Whitehouse if (error) 754c9aecf73SSteven Whitehouse goto fail_gunlock3; 7552ab9cd1cSSteven Whitehouse 756f45dc26dSBob Peterson error = security_inode_init_security(&ip->i_inode, &dip->i_inode, name, 757f45dc26dSBob Peterson &gfs2_initxattrs, NULL); 7582ab9cd1cSSteven Whitehouse if (error) 759c9aecf73SSteven Whitehouse goto fail_gunlock3; 7602ab9cd1cSSteven Whitehouse 7613c1c0ae1SSteven Whitehouse error = link_dinode(dip, name, ip, &da); 7622ab9cd1cSSteven Whitehouse if (error) 763c9aecf73SSteven Whitehouse goto fail_gunlock3; 7642ab9cd1cSSteven Whitehouse 76579ba7480SSteven Whitehouse mark_inode_dirty(inode); 7666d4ade98SSteven Whitehouse d_instantiate(dentry, inode); 767c5bf8fefSMiklos Szeredi if (file) { 768c5bf8fefSMiklos Szeredi *opened |= FILE_CREATED; 7696d4ade98SSteven Whitehouse error = finish_open(file, dentry, gfs2_open_common, opened); 770c5bf8fefSMiklos Szeredi } 77128fb3027SSteven Whitehouse gfs2_glock_dq_uninit(ghs); 77228fb3027SSteven Whitehouse gfs2_glock_dq_uninit(ghs + 1); 773a4923865SBob Peterson clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags); 7746d4ade98SSteven Whitehouse return error; 7752ab9cd1cSSteven Whitehouse 776c9aecf73SSteven Whitehouse fail_gunlock3: 777783013c0SBob Peterson gfs2_glock_dq_uninit(&ip->i_iopen_gh); 778783013c0SBob Peterson gfs2_glock_put(io_gl); 7792ab9cd1cSSteven Whitehouse fail_gunlock2: 780a4923865SBob Peterson if (io_gl) 781a4923865SBob Peterson clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags); 7822ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(ghs + 1); 783c9aecf73SSteven Whitehouse fail_free_inode: 784c9aecf73SSteven Whitehouse if (ip->i_gl) 785c9aecf73SSteven Whitehouse gfs2_glock_put(ip->i_gl); 786b54e9a0bSBob Peterson gfs2_rsqa_delete(ip, NULL); 787e01580bfSChristoph Hellwig fail_free_acls: 788e01580bfSChristoph Hellwig if (default_acl) 789e01580bfSChristoph Hellwig posix_acl_release(default_acl); 790e01580bfSChristoph Hellwig if (acl) 791e01580bfSChristoph Hellwig posix_acl_release(acl); 7922ab9cd1cSSteven Whitehouse fail_gunlock: 7932b47dad8SSteven Whitehouse gfs2_dir_no_add(&da); 794f2741d98SSteven Whitehouse gfs2_glock_dq_uninit(ghs); 79540ac218fSSteven Whitehouse if (inode && !IS_ERR(inode)) { 79679ba7480SSteven Whitehouse clear_nlink(inode); 79705978803SAbhi Das if (!free_vfs_inode) 79879ba7480SSteven Whitehouse mark_inode_dirty(inode); 79905978803SAbhi Das set_bit(free_vfs_inode ? GIF_FREE_VFS_INODE : GIF_ALLOC_FAILED, 80005978803SAbhi Das &GFS2_I(inode)->i_flags); 80140ac218fSSteven Whitehouse iput(inode); 80240ac218fSSteven Whitehouse } 8032ab9cd1cSSteven Whitehouse fail: 804f2741d98SSteven Whitehouse return error; 8052ab9cd1cSSteven Whitehouse } 806f2741d98SSteven Whitehouse 8072ab9cd1cSSteven Whitehouse /** 8082ab9cd1cSSteven Whitehouse * gfs2_create - Create a file 8092ab9cd1cSSteven Whitehouse * @dir: The directory in which to create the file 8102ab9cd1cSSteven Whitehouse * @dentry: The dentry of the new file 8112ab9cd1cSSteven Whitehouse * @mode: The mode of the new file 8122ab9cd1cSSteven Whitehouse * 8132ab9cd1cSSteven Whitehouse * Returns: errno 8142ab9cd1cSSteven Whitehouse */ 8152ab9cd1cSSteven Whitehouse 8162ab9cd1cSSteven Whitehouse static int gfs2_create(struct inode *dir, struct dentry *dentry, 817ebfc3b49SAl Viro umode_t mode, bool excl) 8182ab9cd1cSSteven Whitehouse { 8196d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, NULL, S_IFREG | mode, 0, NULL, 0, excl, NULL); 8202ab9cd1cSSteven Whitehouse } 8212ab9cd1cSSteven Whitehouse 8222ab9cd1cSSteven Whitehouse /** 8236d4ade98SSteven Whitehouse * __gfs2_lookup - Look up a filename in a directory and return its inode 8242ab9cd1cSSteven Whitehouse * @dir: The directory inode 8252ab9cd1cSSteven Whitehouse * @dentry: The dentry of the new inode 8266d4ade98SSteven Whitehouse * @file: File to be opened 8276d4ade98SSteven Whitehouse * @opened: atomic_open flags 8282ab9cd1cSSteven Whitehouse * 8292ab9cd1cSSteven Whitehouse * 8302ab9cd1cSSteven Whitehouse * Returns: errno 8312ab9cd1cSSteven Whitehouse */ 8322ab9cd1cSSteven Whitehouse 8336d4ade98SSteven Whitehouse static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry, 8346d4ade98SSteven Whitehouse struct file *file, int *opened) 8352ab9cd1cSSteven Whitehouse { 8366d4ade98SSteven Whitehouse struct inode *inode; 8376d4ade98SSteven Whitehouse struct dentry *d; 8382ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 8396d4ade98SSteven Whitehouse struct gfs2_glock *gl; 8402ab9cd1cSSteven Whitehouse int error; 8416d4ade98SSteven Whitehouse 8426d4ade98SSteven Whitehouse inode = gfs2_lookupi(dir, &dentry->d_name, 0); 8437b7a9115SBenjamin Coddington if (inode == NULL) { 8447b7a9115SBenjamin Coddington d_add(dentry, NULL); 8456d4ade98SSteven Whitehouse return NULL; 8467b7a9115SBenjamin Coddington } 8476d4ade98SSteven Whitehouse if (IS_ERR(inode)) 8486d4ade98SSteven Whitehouse return ERR_CAST(inode); 8496d4ade98SSteven Whitehouse 8506d4ade98SSteven Whitehouse gl = GFS2_I(inode)->i_gl; 8512ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); 8522ab9cd1cSSteven Whitehouse if (error) { 8532ab9cd1cSSteven Whitehouse iput(inode); 8542ab9cd1cSSteven Whitehouse return ERR_PTR(error); 8552ab9cd1cSSteven Whitehouse } 8566d4ade98SSteven Whitehouse 8576d4ade98SSteven Whitehouse d = d_splice_alias(inode, dentry); 858d57b9c9aSJ. Bruce Fields if (IS_ERR(d)) { 859d57b9c9aSJ. Bruce Fields gfs2_glock_dq_uninit(&gh); 860d57b9c9aSJ. Bruce Fields return d; 861d57b9c9aSJ. Bruce Fields } 8626d4ade98SSteven Whitehouse if (file && S_ISREG(inode->i_mode)) 8636d4ade98SSteven Whitehouse error = finish_open(file, dentry, gfs2_open_common, opened); 8646d4ade98SSteven Whitehouse 8652ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&gh); 8665ca1db41SMiklos Szeredi if (error) { 8675ca1db41SMiklos Szeredi dput(d); 8686d4ade98SSteven Whitehouse return ERR_PTR(error); 8695ca1db41SMiklos Szeredi } 8706d4ade98SSteven Whitehouse return d; 8712ab9cd1cSSteven Whitehouse } 8726d4ade98SSteven Whitehouse 8736d4ade98SSteven Whitehouse static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry, 8746d4ade98SSteven Whitehouse unsigned flags) 8756d4ade98SSteven Whitehouse { 8766d4ade98SSteven Whitehouse return __gfs2_lookup(dir, dentry, NULL, NULL); 8772ab9cd1cSSteven Whitehouse } 8782ab9cd1cSSteven Whitehouse 8792ab9cd1cSSteven Whitehouse /** 8802ab9cd1cSSteven Whitehouse * gfs2_link - Link to a file 8812ab9cd1cSSteven Whitehouse * @old_dentry: The inode to link 8822ab9cd1cSSteven Whitehouse * @dir: Add link to this directory 8832ab9cd1cSSteven Whitehouse * @dentry: The name of the link 8842ab9cd1cSSteven Whitehouse * 8852ab9cd1cSSteven Whitehouse * Link the inode in "old_dentry" into the directory "dir" with the 8862ab9cd1cSSteven Whitehouse * name in "dentry". 8872ab9cd1cSSteven Whitehouse * 8882ab9cd1cSSteven Whitehouse * Returns: errno 8892ab9cd1cSSteven Whitehouse */ 8902ab9cd1cSSteven Whitehouse 8912ab9cd1cSSteven Whitehouse static int gfs2_link(struct dentry *old_dentry, struct inode *dir, 8922ab9cd1cSSteven Whitehouse struct dentry *dentry) 8932ab9cd1cSSteven Whitehouse { 8942ab9cd1cSSteven Whitehouse struct gfs2_inode *dip = GFS2_I(dir); 8952ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 8962b0143b5SDavid Howells struct inode *inode = d_inode(old_dentry); 8972ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 8982ab9cd1cSSteven Whitehouse struct gfs2_holder ghs[2]; 8992ab9cd1cSSteven Whitehouse struct buffer_head *dibh; 90019aeb5a6SBob Peterson struct gfs2_diradd da = { .bh = NULL, .save_loc = 1, }; 9012ab9cd1cSSteven Whitehouse int error; 9022ab9cd1cSSteven Whitehouse 9032ab9cd1cSSteven Whitehouse if (S_ISDIR(inode->i_mode)) 9042ab9cd1cSSteven Whitehouse return -EPERM; 9052ab9cd1cSSteven Whitehouse 906b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(dip); 9070a305e49SBob Peterson if (error) 9080a305e49SBob Peterson return error; 9090a305e49SBob Peterson 9102ab9cd1cSSteven Whitehouse gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 9112ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); 9122ab9cd1cSSteven Whitehouse 9132ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs); /* parent */ 9142ab9cd1cSSteven Whitehouse if (error) 9152ab9cd1cSSteven Whitehouse goto out_parent; 9162ab9cd1cSSteven Whitehouse 9172ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + 1); /* child */ 9182ab9cd1cSSteven Whitehouse if (error) 9192ab9cd1cSSteven Whitehouse goto out_child; 9202ab9cd1cSSteven Whitehouse 9212ab9cd1cSSteven Whitehouse error = -ENOENT; 9222ab9cd1cSSteven Whitehouse if (inode->i_nlink == 0) 9232ab9cd1cSSteven Whitehouse goto out_gunlock; 9242ab9cd1cSSteven Whitehouse 92510556cb2SAl Viro error = gfs2_permission(dir, MAY_WRITE | MAY_EXEC); 9262ab9cd1cSSteven Whitehouse if (error) 9272ab9cd1cSSteven Whitehouse goto out_gunlock; 9282ab9cd1cSSteven Whitehouse 9292ab9cd1cSSteven Whitehouse error = gfs2_dir_check(dir, &dentry->d_name, NULL); 9302ab9cd1cSSteven Whitehouse switch (error) { 9312ab9cd1cSSteven Whitehouse case -ENOENT: 9322ab9cd1cSSteven Whitehouse break; 9332ab9cd1cSSteven Whitehouse case 0: 9342ab9cd1cSSteven Whitehouse error = -EEXIST; 9352ab9cd1cSSteven Whitehouse default: 9362ab9cd1cSSteven Whitehouse goto out_gunlock; 9372ab9cd1cSSteven Whitehouse } 9382ab9cd1cSSteven Whitehouse 9392ab9cd1cSSteven Whitehouse error = -EINVAL; 9402ab9cd1cSSteven Whitehouse if (!dip->i_inode.i_nlink) 9412ab9cd1cSSteven Whitehouse goto out_gunlock; 9422ab9cd1cSSteven Whitehouse error = -EFBIG; 9432ab9cd1cSSteven Whitehouse if (dip->i_entries == (u32)-1) 9442ab9cd1cSSteven Whitehouse goto out_gunlock; 9452ab9cd1cSSteven Whitehouse error = -EPERM; 9462ab9cd1cSSteven Whitehouse if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) 9472ab9cd1cSSteven Whitehouse goto out_gunlock; 9482ab9cd1cSSteven Whitehouse error = -EINVAL; 9492ab9cd1cSSteven Whitehouse if (!ip->i_inode.i_nlink) 9502ab9cd1cSSteven Whitehouse goto out_gunlock; 9512ab9cd1cSSteven Whitehouse error = -EMLINK; 9522ab9cd1cSSteven Whitehouse if (ip->i_inode.i_nlink == (u32)-1) 9532ab9cd1cSSteven Whitehouse goto out_gunlock; 9542ab9cd1cSSteven Whitehouse 9553c1c0ae1SSteven Whitehouse error = gfs2_diradd_alloc_required(dir, &dentry->d_name, &da); 9562ab9cd1cSSteven Whitehouse if (error < 0) 9572ab9cd1cSSteven Whitehouse goto out_gunlock; 9582ab9cd1cSSteven Whitehouse 9593c1c0ae1SSteven Whitehouse if (da.nr_blocks) { 9603c1c0ae1SSteven Whitehouse struct gfs2_alloc_parms ap = { .target = da.nr_blocks, }; 961b8fbf471SAbhi Das error = gfs2_quota_lock_check(dip, &ap); 9622ab9cd1cSSteven Whitehouse if (error) 9635407e242SBob Peterson goto out_gunlock; 9642ab9cd1cSSteven Whitehouse 9657b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(dip, &ap); 9662ab9cd1cSSteven Whitehouse if (error) 9672ab9cd1cSSteven Whitehouse goto out_gunlock_q; 9682ab9cd1cSSteven Whitehouse 969534cf9caSSteven Whitehouse error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(dip, &da, 2), 0); 9702ab9cd1cSSteven Whitehouse if (error) 9712ab9cd1cSSteven Whitehouse goto out_ipres; 9722ab9cd1cSSteven Whitehouse } else { 9732ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0); 9742ab9cd1cSSteven Whitehouse if (error) 9752ab9cd1cSSteven Whitehouse goto out_ipres; 9762ab9cd1cSSteven Whitehouse } 9772ab9cd1cSSteven Whitehouse 9782ab9cd1cSSteven Whitehouse error = gfs2_meta_inode_buffer(ip, &dibh); 9792ab9cd1cSSteven Whitehouse if (error) 9802ab9cd1cSSteven Whitehouse goto out_end_trans; 9812ab9cd1cSSteven Whitehouse 9822b47dad8SSteven Whitehouse error = gfs2_dir_add(dir, &dentry->d_name, ip, &da); 9832ab9cd1cSSteven Whitehouse if (error) 9842ab9cd1cSSteven Whitehouse goto out_brelse; 9852ab9cd1cSSteven Whitehouse 986350a9b0aSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, dibh); 9872ab9cd1cSSteven Whitehouse inc_nlink(&ip->i_inode); 988078cd827SDeepa Dinamani ip->i_inode.i_ctime = current_time(&ip->i_inode); 989ab9bbda0SSteven Whitehouse ihold(inode); 990ab9bbda0SSteven Whitehouse d_instantiate(dentry, inode); 991ab9bbda0SSteven Whitehouse mark_inode_dirty(inode); 9922ab9cd1cSSteven Whitehouse 9932ab9cd1cSSteven Whitehouse out_brelse: 9942ab9cd1cSSteven Whitehouse brelse(dibh); 9952ab9cd1cSSteven Whitehouse out_end_trans: 9962ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 9972ab9cd1cSSteven Whitehouse out_ipres: 9983c1c0ae1SSteven Whitehouse if (da.nr_blocks) 9992ab9cd1cSSteven Whitehouse gfs2_inplace_release(dip); 10002ab9cd1cSSteven Whitehouse out_gunlock_q: 10013c1c0ae1SSteven Whitehouse if (da.nr_blocks) 10022ab9cd1cSSteven Whitehouse gfs2_quota_unlock(dip); 10032ab9cd1cSSteven Whitehouse out_gunlock: 10042b47dad8SSteven Whitehouse gfs2_dir_no_add(&da); 10052ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + 1); 10062ab9cd1cSSteven Whitehouse out_child: 10072ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs); 10082ab9cd1cSSteven Whitehouse out_parent: 10092ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs); 10102ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs + 1); 10112ab9cd1cSSteven Whitehouse return error; 10122ab9cd1cSSteven Whitehouse } 10132ab9cd1cSSteven Whitehouse 10142ab9cd1cSSteven Whitehouse /* 10152ab9cd1cSSteven Whitehouse * gfs2_unlink_ok - check to see that a inode is still in a directory 10162ab9cd1cSSteven Whitehouse * @dip: the directory 10172ab9cd1cSSteven Whitehouse * @name: the name of the file 10182ab9cd1cSSteven Whitehouse * @ip: the inode 10192ab9cd1cSSteven Whitehouse * 10202ab9cd1cSSteven Whitehouse * Assumes that the lock on (at least) @dip is held. 10212ab9cd1cSSteven Whitehouse * 10222ab9cd1cSSteven Whitehouse * Returns: 0 if the parent/child relationship is correct, errno if it isn't 10232ab9cd1cSSteven Whitehouse */ 10242ab9cd1cSSteven Whitehouse 10252ab9cd1cSSteven Whitehouse static int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name, 10262ab9cd1cSSteven Whitehouse const struct gfs2_inode *ip) 10272ab9cd1cSSteven Whitehouse { 10282ab9cd1cSSteven Whitehouse int error; 10292ab9cd1cSSteven Whitehouse 10302ab9cd1cSSteven Whitehouse if (IS_IMMUTABLE(&ip->i_inode) || IS_APPEND(&ip->i_inode)) 10312ab9cd1cSSteven Whitehouse return -EPERM; 10322ab9cd1cSSteven Whitehouse 10332ab9cd1cSSteven Whitehouse if ((dip->i_inode.i_mode & S_ISVTX) && 10346b24c0d2SEric W. Biederman !uid_eq(dip->i_inode.i_uid, current_fsuid()) && 10356b24c0d2SEric W. Biederman !uid_eq(ip->i_inode.i_uid, current_fsuid()) && !capable(CAP_FOWNER)) 10362ab9cd1cSSteven Whitehouse return -EPERM; 10372ab9cd1cSSteven Whitehouse 10382ab9cd1cSSteven Whitehouse if (IS_APPEND(&dip->i_inode)) 10392ab9cd1cSSteven Whitehouse return -EPERM; 10402ab9cd1cSSteven Whitehouse 104110556cb2SAl Viro error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC); 10422ab9cd1cSSteven Whitehouse if (error) 10432ab9cd1cSSteven Whitehouse return error; 10442ab9cd1cSSteven Whitehouse 104537975f15SFabian Frederick return gfs2_dir_check(&dip->i_inode, name, ip); 10462ab9cd1cSSteven Whitehouse } 10472ab9cd1cSSteven Whitehouse 10482ab9cd1cSSteven Whitehouse /** 10492ab9cd1cSSteven Whitehouse * gfs2_unlink_inode - Removes an inode from its parent dir and unlinks it 10502ab9cd1cSSteven Whitehouse * @dip: The parent directory 10512ab9cd1cSSteven Whitehouse * @name: The name of the entry in the parent directory 10522ab9cd1cSSteven Whitehouse * @inode: The inode to be removed 10532ab9cd1cSSteven Whitehouse * 10542ab9cd1cSSteven Whitehouse * Called with all the locks and in a transaction. This will only be 10552ab9cd1cSSteven Whitehouse * called for a directory after it has been checked to ensure it is empty. 10562ab9cd1cSSteven Whitehouse * 10572ab9cd1cSSteven Whitehouse * Returns: 0 on success, or an error 10582ab9cd1cSSteven Whitehouse */ 10592ab9cd1cSSteven Whitehouse 10602ab9cd1cSSteven Whitehouse static int gfs2_unlink_inode(struct gfs2_inode *dip, 10614327a9bfSBob Peterson const struct dentry *dentry) 10622ab9cd1cSSteven Whitehouse { 10632b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 10642ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 10652ab9cd1cSSteven Whitehouse int error; 10662ab9cd1cSSteven Whitehouse 10672ab9cd1cSSteven Whitehouse error = gfs2_dir_del(dip, dentry); 10682ab9cd1cSSteven Whitehouse if (error) 10692ab9cd1cSSteven Whitehouse return error; 10702ab9cd1cSSteven Whitehouse 10712ab9cd1cSSteven Whitehouse ip->i_entries = 0; 1072078cd827SDeepa Dinamani inode->i_ctime = current_time(inode); 10732ab9cd1cSSteven Whitehouse if (S_ISDIR(inode->i_mode)) 10742ab9cd1cSSteven Whitehouse clear_nlink(inode); 10752ab9cd1cSSteven Whitehouse else 10762ab9cd1cSSteven Whitehouse drop_nlink(inode); 10772ab9cd1cSSteven Whitehouse mark_inode_dirty(inode); 10782ab9cd1cSSteven Whitehouse if (inode->i_nlink == 0) 10792ab9cd1cSSteven Whitehouse gfs2_unlink_di(inode); 10802ab9cd1cSSteven Whitehouse return 0; 10812ab9cd1cSSteven Whitehouse } 10822ab9cd1cSSteven Whitehouse 10832ab9cd1cSSteven Whitehouse 10842ab9cd1cSSteven Whitehouse /** 10852ab9cd1cSSteven Whitehouse * gfs2_unlink - Unlink an inode (this does rmdir as well) 10862ab9cd1cSSteven Whitehouse * @dir: The inode of the directory containing the inode to unlink 10872ab9cd1cSSteven Whitehouse * @dentry: The file itself 10882ab9cd1cSSteven Whitehouse * 10892ab9cd1cSSteven Whitehouse * This routine uses the type of the inode as a flag to figure out 10902ab9cd1cSSteven Whitehouse * whether this is an unlink or an rmdir. 10912ab9cd1cSSteven Whitehouse * 10922ab9cd1cSSteven Whitehouse * Returns: errno 10932ab9cd1cSSteven Whitehouse */ 10942ab9cd1cSSteven Whitehouse 10952ab9cd1cSSteven Whitehouse static int gfs2_unlink(struct inode *dir, struct dentry *dentry) 10962ab9cd1cSSteven Whitehouse { 10972ab9cd1cSSteven Whitehouse struct gfs2_inode *dip = GFS2_I(dir); 10982ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 10992b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 11002ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 11012ab9cd1cSSteven Whitehouse struct gfs2_holder ghs[3]; 11022ab9cd1cSSteven Whitehouse struct gfs2_rgrpd *rgd; 11035e2f7d61SBob Peterson int error; 11045e2f7d61SBob Peterson 11055e2f7d61SBob Peterson error = gfs2_rindex_update(sdp); 11065e2f7d61SBob Peterson if (error) 11075e2f7d61SBob Peterson return error; 11085e2f7d61SBob Peterson 11095e2f7d61SBob Peterson error = -EROFS; 11102ab9cd1cSSteven Whitehouse 11112ab9cd1cSSteven Whitehouse gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 11122ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); 11132ab9cd1cSSteven Whitehouse 111466fc061bSSteven Whitehouse rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1); 1115a365fbf3SSteven Whitehouse if (!rgd) 111687654896SSteven Whitehouse goto out_inodes; 1117a365fbf3SSteven Whitehouse 11182ab9cd1cSSteven Whitehouse gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2); 11192ab9cd1cSSteven Whitehouse 11202ab9cd1cSSteven Whitehouse 11212ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs); /* parent */ 11222ab9cd1cSSteven Whitehouse if (error) 11232ab9cd1cSSteven Whitehouse goto out_parent; 11242ab9cd1cSSteven Whitehouse 11252ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + 1); /* child */ 11262ab9cd1cSSteven Whitehouse if (error) 11272ab9cd1cSSteven Whitehouse goto out_child; 11282ab9cd1cSSteven Whitehouse 11292ab9cd1cSSteven Whitehouse error = -ENOENT; 11302ab9cd1cSSteven Whitehouse if (inode->i_nlink == 0) 11312ab9cd1cSSteven Whitehouse goto out_rgrp; 11322ab9cd1cSSteven Whitehouse 11332ab9cd1cSSteven Whitehouse if (S_ISDIR(inode->i_mode)) { 11342ab9cd1cSSteven Whitehouse error = -ENOTEMPTY; 11352ab9cd1cSSteven Whitehouse if (ip->i_entries > 2 || inode->i_nlink > 2) 11362ab9cd1cSSteven Whitehouse goto out_rgrp; 11372ab9cd1cSSteven Whitehouse } 11382ab9cd1cSSteven Whitehouse 11392ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + 2); /* rgrp */ 11402ab9cd1cSSteven Whitehouse if (error) 11412ab9cd1cSSteven Whitehouse goto out_rgrp; 11422ab9cd1cSSteven Whitehouse 11432ab9cd1cSSteven Whitehouse error = gfs2_unlink_ok(dip, &dentry->d_name, ip); 11442ab9cd1cSSteven Whitehouse if (error) 11452ab9cd1cSSteven Whitehouse goto out_gunlock; 11462ab9cd1cSSteven Whitehouse 11472ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, 2*RES_DINODE + 3*RES_LEAF + RES_RG_BIT, 0); 11482ab9cd1cSSteven Whitehouse if (error) 11492ab9cd1cSSteven Whitehouse goto out_end_trans; 11502ab9cd1cSSteven Whitehouse 11514327a9bfSBob Peterson error = gfs2_unlink_inode(dip, dentry); 11522ab9cd1cSSteven Whitehouse 11532ab9cd1cSSteven Whitehouse out_end_trans: 11542ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 11552ab9cd1cSSteven Whitehouse out_gunlock: 11562ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + 2); 11572ab9cd1cSSteven Whitehouse out_rgrp: 11582ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + 1); 11592ab9cd1cSSteven Whitehouse out_child: 11602ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs); 11612ab9cd1cSSteven Whitehouse out_parent: 116287654896SSteven Whitehouse gfs2_holder_uninit(ghs + 2); 116387654896SSteven Whitehouse out_inodes: 116487654896SSteven Whitehouse gfs2_holder_uninit(ghs + 1); 11652ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs); 11662ab9cd1cSSteven Whitehouse return error; 11672ab9cd1cSSteven Whitehouse } 11682ab9cd1cSSteven Whitehouse 11692ab9cd1cSSteven Whitehouse /** 11702ab9cd1cSSteven Whitehouse * gfs2_symlink - Create a symlink 11712ab9cd1cSSteven Whitehouse * @dir: The directory to create the symlink in 11722ab9cd1cSSteven Whitehouse * @dentry: The dentry to put the symlink in 11732ab9cd1cSSteven Whitehouse * @symname: The thing which the link points to 11742ab9cd1cSSteven Whitehouse * 11752ab9cd1cSSteven Whitehouse * Returns: errno 11762ab9cd1cSSteven Whitehouse */ 11772ab9cd1cSSteven Whitehouse 11782ab9cd1cSSteven Whitehouse static int gfs2_symlink(struct inode *dir, struct dentry *dentry, 11792ab9cd1cSSteven Whitehouse const char *symname) 11802ab9cd1cSSteven Whitehouse { 11812ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 1182160b4026SSteven Whitehouse unsigned int size; 11832ab9cd1cSSteven Whitehouse 11842ab9cd1cSSteven Whitehouse size = strlen(symname); 11852ab9cd1cSSteven Whitehouse if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1) 11862ab9cd1cSSteven Whitehouse return -ENAMETOOLONG; 11872ab9cd1cSSteven Whitehouse 11886d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, NULL, S_IFLNK | S_IRWXUGO, 0, symname, size, 0, NULL); 11892ab9cd1cSSteven Whitehouse } 11902ab9cd1cSSteven Whitehouse 11912ab9cd1cSSteven Whitehouse /** 11922ab9cd1cSSteven Whitehouse * gfs2_mkdir - Make a directory 11932ab9cd1cSSteven Whitehouse * @dir: The parent directory of the new one 11942ab9cd1cSSteven Whitehouse * @dentry: The dentry of the new directory 11952ab9cd1cSSteven Whitehouse * @mode: The mode of the new directory 11962ab9cd1cSSteven Whitehouse * 11972ab9cd1cSSteven Whitehouse * Returns: errno 11982ab9cd1cSSteven Whitehouse */ 11992ab9cd1cSSteven Whitehouse 120018bb1db3SAl Viro static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) 12012ab9cd1cSSteven Whitehouse { 120228fb3027SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 120328fb3027SSteven Whitehouse unsigned dsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); 12046d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, NULL, S_IFDIR | mode, 0, NULL, dsize, 0, NULL); 12052ab9cd1cSSteven Whitehouse } 12062ab9cd1cSSteven Whitehouse 12072ab9cd1cSSteven Whitehouse /** 12082ab9cd1cSSteven Whitehouse * gfs2_mknod - Make a special file 12092ab9cd1cSSteven Whitehouse * @dir: The directory in which the special file will reside 12102ab9cd1cSSteven Whitehouse * @dentry: The dentry of the special file 12112ab9cd1cSSteven Whitehouse * @mode: The mode of the special file 1212f2741d98SSteven Whitehouse * @dev: The device specification of the special file 12132ab9cd1cSSteven Whitehouse * 12142ab9cd1cSSteven Whitehouse */ 12152ab9cd1cSSteven Whitehouse 12161a67aafbSAl Viro static int gfs2_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, 12172ab9cd1cSSteven Whitehouse dev_t dev) 12182ab9cd1cSSteven Whitehouse { 12196d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, NULL, mode, dev, NULL, 0, 0, NULL); 12206d4ade98SSteven Whitehouse } 12216d4ade98SSteven Whitehouse 12226d4ade98SSteven Whitehouse /** 12236d4ade98SSteven Whitehouse * gfs2_atomic_open - Atomically open a file 12246d4ade98SSteven Whitehouse * @dir: The directory 12256d4ade98SSteven Whitehouse * @dentry: The proposed new entry 12266d4ade98SSteven Whitehouse * @file: The proposed new struct file 12276d4ade98SSteven Whitehouse * @flags: open flags 12286d4ade98SSteven Whitehouse * @mode: File mode 12296d4ade98SSteven Whitehouse * @opened: Flag to say whether the file has been opened or not 12306d4ade98SSteven Whitehouse * 12316d4ade98SSteven Whitehouse * Returns: error code or 0 for success 12326d4ade98SSteven Whitehouse */ 12336d4ade98SSteven Whitehouse 12346d4ade98SSteven Whitehouse static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry, 12356d4ade98SSteven Whitehouse struct file *file, unsigned flags, 12366d4ade98SSteven Whitehouse umode_t mode, int *opened) 12376d4ade98SSteven Whitehouse { 12386d4ade98SSteven Whitehouse struct dentry *d; 12396d4ade98SSteven Whitehouse bool excl = !!(flags & O_EXCL); 12406d4ade98SSteven Whitehouse 124100699ad8SAl Viro if (!d_in_lookup(dentry)) 12424d93bc3eSAl Viro goto skip_lookup; 12434d93bc3eSAl Viro 12446d4ade98SSteven Whitehouse d = __gfs2_lookup(dir, dentry, file, opened); 12456d4ade98SSteven Whitehouse if (IS_ERR(d)) 12466d4ade98SSteven Whitehouse return PTR_ERR(d); 12475ca1db41SMiklos Szeredi if (d != NULL) 12485ca1db41SMiklos Szeredi dentry = d; 12492b0143b5SDavid Howells if (d_really_is_positive(dentry)) { 1250ec7d879cSAl Viro if (!(*opened & FILE_OPENED)) 1251ec7d879cSAl Viro return finish_no_open(file, d); 12525ca1db41SMiklos Szeredi dput(d); 12536d4ade98SSteven Whitehouse return 0; 12546d4ade98SSteven Whitehouse } 12556d4ade98SSteven Whitehouse 12565ca1db41SMiklos Szeredi BUG_ON(d != NULL); 12574d93bc3eSAl Viro 12584d93bc3eSAl Viro skip_lookup: 12596d4ade98SSteven Whitehouse if (!(flags & O_CREAT)) 12606d4ade98SSteven Whitehouse return -ENOENT; 12616d4ade98SSteven Whitehouse 12626d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, file, S_IFREG | mode, 0, NULL, 0, excl, opened); 12632ab9cd1cSSteven Whitehouse } 12642ab9cd1cSSteven Whitehouse 12652ab9cd1cSSteven Whitehouse /* 12662ab9cd1cSSteven Whitehouse * gfs2_ok_to_move - check if it's ok to move a directory to another directory 12672ab9cd1cSSteven Whitehouse * @this: move this 12682ab9cd1cSSteven Whitehouse * @to: to here 12692ab9cd1cSSteven Whitehouse * 12702ab9cd1cSSteven Whitehouse * Follow @to back to the root and make sure we don't encounter @this 12712ab9cd1cSSteven Whitehouse * Assumes we already hold the rename lock. 12722ab9cd1cSSteven Whitehouse * 12732ab9cd1cSSteven Whitehouse * Returns: errno 12742ab9cd1cSSteven Whitehouse */ 12752ab9cd1cSSteven Whitehouse 12762ab9cd1cSSteven Whitehouse static int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to) 12772ab9cd1cSSteven Whitehouse { 12782ab9cd1cSSteven Whitehouse struct inode *dir = &to->i_inode; 12792ab9cd1cSSteven Whitehouse struct super_block *sb = dir->i_sb; 12802ab9cd1cSSteven Whitehouse struct inode *tmp; 12812ab9cd1cSSteven Whitehouse int error = 0; 12822ab9cd1cSSteven Whitehouse 12832ab9cd1cSSteven Whitehouse igrab(dir); 12842ab9cd1cSSteven Whitehouse 12852ab9cd1cSSteven Whitehouse for (;;) { 12862ab9cd1cSSteven Whitehouse if (dir == &this->i_inode) { 12872ab9cd1cSSteven Whitehouse error = -EINVAL; 12882ab9cd1cSSteven Whitehouse break; 12892ab9cd1cSSteven Whitehouse } 12902b0143b5SDavid Howells if (dir == d_inode(sb->s_root)) { 12912ab9cd1cSSteven Whitehouse error = 0; 12922ab9cd1cSSteven Whitehouse break; 12932ab9cd1cSSteven Whitehouse } 12942ab9cd1cSSteven Whitehouse 12952ab9cd1cSSteven Whitehouse tmp = gfs2_lookupi(dir, &gfs2_qdotdot, 1); 129648f8f711SAbhi Das if (!tmp) { 129748f8f711SAbhi Das error = -ENOENT; 129848f8f711SAbhi Das break; 129948f8f711SAbhi Das } 13002ab9cd1cSSteven Whitehouse if (IS_ERR(tmp)) { 13012ab9cd1cSSteven Whitehouse error = PTR_ERR(tmp); 13022ab9cd1cSSteven Whitehouse break; 13032ab9cd1cSSteven Whitehouse } 13042ab9cd1cSSteven Whitehouse 13052ab9cd1cSSteven Whitehouse iput(dir); 13062ab9cd1cSSteven Whitehouse dir = tmp; 13072ab9cd1cSSteven Whitehouse } 13082ab9cd1cSSteven Whitehouse 13092ab9cd1cSSteven Whitehouse iput(dir); 13102ab9cd1cSSteven Whitehouse 13112ab9cd1cSSteven Whitehouse return error; 13122ab9cd1cSSteven Whitehouse } 13132ab9cd1cSSteven Whitehouse 13142ab9cd1cSSteven Whitehouse /** 1315a63b7bbcSBenjamin Marzinski * update_moved_ino - Update an inode that's being moved 1316a63b7bbcSBenjamin Marzinski * @ip: The inode being moved 1317a63b7bbcSBenjamin Marzinski * @ndip: The parent directory of the new filename 1318a63b7bbcSBenjamin Marzinski * @dir_rename: True of ip is a directory 1319a63b7bbcSBenjamin Marzinski * 1320a63b7bbcSBenjamin Marzinski * Returns: errno 1321a63b7bbcSBenjamin Marzinski */ 1322a63b7bbcSBenjamin Marzinski 1323a63b7bbcSBenjamin Marzinski static int update_moved_ino(struct gfs2_inode *ip, struct gfs2_inode *ndip, 1324a63b7bbcSBenjamin Marzinski int dir_rename) 1325a63b7bbcSBenjamin Marzinski { 1326a63b7bbcSBenjamin Marzinski int error; 1327a63b7bbcSBenjamin Marzinski struct buffer_head *dibh; 1328a63b7bbcSBenjamin Marzinski 1329a63b7bbcSBenjamin Marzinski if (dir_rename) 1330a63b7bbcSBenjamin Marzinski return gfs2_dir_mvino(ip, &gfs2_qdotdot, ndip, DT_DIR); 1331a63b7bbcSBenjamin Marzinski 1332a63b7bbcSBenjamin Marzinski error = gfs2_meta_inode_buffer(ip, &dibh); 1333a63b7bbcSBenjamin Marzinski if (error) 1334a63b7bbcSBenjamin Marzinski return error; 1335078cd827SDeepa Dinamani ip->i_inode.i_ctime = current_time(&ip->i_inode); 1336a63b7bbcSBenjamin Marzinski gfs2_trans_add_meta(ip->i_gl, dibh); 1337a63b7bbcSBenjamin Marzinski gfs2_dinode_out(ip, dibh->b_data); 1338a63b7bbcSBenjamin Marzinski brelse(dibh); 1339a63b7bbcSBenjamin Marzinski return 0; 1340a63b7bbcSBenjamin Marzinski } 1341a63b7bbcSBenjamin Marzinski 1342a63b7bbcSBenjamin Marzinski 1343a63b7bbcSBenjamin Marzinski /** 13442ab9cd1cSSteven Whitehouse * gfs2_rename - Rename a file 13452ab9cd1cSSteven Whitehouse * @odir: Parent directory of old file name 13462ab9cd1cSSteven Whitehouse * @odentry: The old dentry of the file 13472ab9cd1cSSteven Whitehouse * @ndir: Parent directory of new file name 13482ab9cd1cSSteven Whitehouse * @ndentry: The new dentry of the file 13492ab9cd1cSSteven Whitehouse * 13502ab9cd1cSSteven Whitehouse * Returns: errno 13512ab9cd1cSSteven Whitehouse */ 13522ab9cd1cSSteven Whitehouse 13532ab9cd1cSSteven Whitehouse static int gfs2_rename(struct inode *odir, struct dentry *odentry, 13542ab9cd1cSSteven Whitehouse struct inode *ndir, struct dentry *ndentry) 13552ab9cd1cSSteven Whitehouse { 13562ab9cd1cSSteven Whitehouse struct gfs2_inode *odip = GFS2_I(odir); 13572ab9cd1cSSteven Whitehouse struct gfs2_inode *ndip = GFS2_I(ndir); 13582b0143b5SDavid Howells struct gfs2_inode *ip = GFS2_I(d_inode(odentry)); 13592ab9cd1cSSteven Whitehouse struct gfs2_inode *nip = NULL; 13602ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(odir); 13616df9f9a2SAndreas Gruenbacher struct gfs2_holder ghs[5], r_gh; 13622ab9cd1cSSteven Whitehouse struct gfs2_rgrpd *nrgd; 13632ab9cd1cSSteven Whitehouse unsigned int num_gh; 13642ab9cd1cSSteven Whitehouse int dir_rename = 0; 136519aeb5a6SBob Peterson struct gfs2_diradd da = { .nr_blocks = 0, .save_loc = 0, }; 13662ab9cd1cSSteven Whitehouse unsigned int x; 13672ab9cd1cSSteven Whitehouse int error; 13682ab9cd1cSSteven Whitehouse 13696df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&r_gh); 13702b0143b5SDavid Howells if (d_really_is_positive(ndentry)) { 13712b0143b5SDavid Howells nip = GFS2_I(d_inode(ndentry)); 13722ab9cd1cSSteven Whitehouse if (ip == nip) 13732ab9cd1cSSteven Whitehouse return 0; 13742ab9cd1cSSteven Whitehouse } 13752ab9cd1cSSteven Whitehouse 13765e2f7d61SBob Peterson error = gfs2_rindex_update(sdp); 13775e2f7d61SBob Peterson if (error) 13785e2f7d61SBob Peterson return error; 13795e2f7d61SBob Peterson 1380b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ndip); 13810a305e49SBob Peterson if (error) 13820a305e49SBob Peterson return error; 13830a305e49SBob Peterson 13842ab9cd1cSSteven Whitehouse if (odip != ndip) { 13852ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE, 13862ab9cd1cSSteven Whitehouse 0, &r_gh); 13872ab9cd1cSSteven Whitehouse if (error) 13882ab9cd1cSSteven Whitehouse goto out; 13892ab9cd1cSSteven Whitehouse 13902ab9cd1cSSteven Whitehouse if (S_ISDIR(ip->i_inode.i_mode)) { 13912ab9cd1cSSteven Whitehouse dir_rename = 1; 1392a63b7bbcSBenjamin Marzinski /* don't move a directory into its subdir */ 13932ab9cd1cSSteven Whitehouse error = gfs2_ok_to_move(ip, ndip); 13942ab9cd1cSSteven Whitehouse if (error) 13952ab9cd1cSSteven Whitehouse goto out_gunlock_r; 13962ab9cd1cSSteven Whitehouse } 13972ab9cd1cSSteven Whitehouse } 13982ab9cd1cSSteven Whitehouse 13992ab9cd1cSSteven Whitehouse num_gh = 1; 14002ab9cd1cSSteven Whitehouse gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 14012ab9cd1cSSteven Whitehouse if (odip != ndip) { 14022ab9cd1cSSteven Whitehouse gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 14032ab9cd1cSSteven Whitehouse num_gh++; 14042ab9cd1cSSteven Whitehouse } 14052ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 14062ab9cd1cSSteven Whitehouse num_gh++; 14072ab9cd1cSSteven Whitehouse 14082ab9cd1cSSteven Whitehouse if (nip) { 14092ab9cd1cSSteven Whitehouse gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 14102ab9cd1cSSteven Whitehouse num_gh++; 14112ab9cd1cSSteven Whitehouse /* grab the resource lock for unlink flag twiddling 14122ab9cd1cSSteven Whitehouse * this is the case of the target file already existing 14132ab9cd1cSSteven Whitehouse * so we unlink before doing the rename 14142ab9cd1cSSteven Whitehouse */ 141566fc061bSSteven Whitehouse nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr, 1); 14162ab9cd1cSSteven Whitehouse if (nrgd) 14172ab9cd1cSSteven Whitehouse gfs2_holder_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++); 14182ab9cd1cSSteven Whitehouse } 14192ab9cd1cSSteven Whitehouse 14202ab9cd1cSSteven Whitehouse for (x = 0; x < num_gh; x++) { 14212ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + x); 14222ab9cd1cSSteven Whitehouse if (error) 14232ab9cd1cSSteven Whitehouse goto out_gunlock; 14242ab9cd1cSSteven Whitehouse } 14252ab9cd1cSSteven Whitehouse 14262ab9cd1cSSteven Whitehouse error = -ENOENT; 14272ab9cd1cSSteven Whitehouse if (ip->i_inode.i_nlink == 0) 14282ab9cd1cSSteven Whitehouse goto out_gunlock; 14292ab9cd1cSSteven Whitehouse 14302ab9cd1cSSteven Whitehouse /* Check out the old directory */ 14312ab9cd1cSSteven Whitehouse 14322ab9cd1cSSteven Whitehouse error = gfs2_unlink_ok(odip, &odentry->d_name, ip); 14332ab9cd1cSSteven Whitehouse if (error) 14342ab9cd1cSSteven Whitehouse goto out_gunlock; 14352ab9cd1cSSteven Whitehouse 14362ab9cd1cSSteven Whitehouse /* Check out the new directory */ 14372ab9cd1cSSteven Whitehouse 14382ab9cd1cSSteven Whitehouse if (nip) { 14392ab9cd1cSSteven Whitehouse error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip); 14402ab9cd1cSSteven Whitehouse if (error) 14412ab9cd1cSSteven Whitehouse goto out_gunlock; 14422ab9cd1cSSteven Whitehouse 14432ab9cd1cSSteven Whitehouse if (nip->i_inode.i_nlink == 0) { 14442ab9cd1cSSteven Whitehouse error = -EAGAIN; 14452ab9cd1cSSteven Whitehouse goto out_gunlock; 14462ab9cd1cSSteven Whitehouse } 14472ab9cd1cSSteven Whitehouse 14482ab9cd1cSSteven Whitehouse if (S_ISDIR(nip->i_inode.i_mode)) { 14492ab9cd1cSSteven Whitehouse if (nip->i_entries < 2) { 14502ab9cd1cSSteven Whitehouse gfs2_consist_inode(nip); 14512ab9cd1cSSteven Whitehouse error = -EIO; 14522ab9cd1cSSteven Whitehouse goto out_gunlock; 14532ab9cd1cSSteven Whitehouse } 14542ab9cd1cSSteven Whitehouse if (nip->i_entries > 2) { 14552ab9cd1cSSteven Whitehouse error = -ENOTEMPTY; 14562ab9cd1cSSteven Whitehouse goto out_gunlock; 14572ab9cd1cSSteven Whitehouse } 14582ab9cd1cSSteven Whitehouse } 14592ab9cd1cSSteven Whitehouse } else { 146010556cb2SAl Viro error = gfs2_permission(ndir, MAY_WRITE | MAY_EXEC); 14612ab9cd1cSSteven Whitehouse if (error) 14622ab9cd1cSSteven Whitehouse goto out_gunlock; 14632ab9cd1cSSteven Whitehouse 14642ab9cd1cSSteven Whitehouse error = gfs2_dir_check(ndir, &ndentry->d_name, NULL); 14652ab9cd1cSSteven Whitehouse switch (error) { 14662ab9cd1cSSteven Whitehouse case -ENOENT: 14672ab9cd1cSSteven Whitehouse error = 0; 14682ab9cd1cSSteven Whitehouse break; 14692ab9cd1cSSteven Whitehouse case 0: 14702ab9cd1cSSteven Whitehouse error = -EEXIST; 14712ab9cd1cSSteven Whitehouse default: 14722ab9cd1cSSteven Whitehouse goto out_gunlock; 14732ab9cd1cSSteven Whitehouse }; 14742ab9cd1cSSteven Whitehouse 14752ab9cd1cSSteven Whitehouse if (odip != ndip) { 14762ab9cd1cSSteven Whitehouse if (!ndip->i_inode.i_nlink) { 14772ab9cd1cSSteven Whitehouse error = -ENOENT; 14782ab9cd1cSSteven Whitehouse goto out_gunlock; 14792ab9cd1cSSteven Whitehouse } 14802ab9cd1cSSteven Whitehouse if (ndip->i_entries == (u32)-1) { 14812ab9cd1cSSteven Whitehouse error = -EFBIG; 14822ab9cd1cSSteven Whitehouse goto out_gunlock; 14832ab9cd1cSSteven Whitehouse } 14842ab9cd1cSSteven Whitehouse if (S_ISDIR(ip->i_inode.i_mode) && 14852ab9cd1cSSteven Whitehouse ndip->i_inode.i_nlink == (u32)-1) { 14862ab9cd1cSSteven Whitehouse error = -EMLINK; 14872ab9cd1cSSteven Whitehouse goto out_gunlock; 14882ab9cd1cSSteven Whitehouse } 14892ab9cd1cSSteven Whitehouse } 14902ab9cd1cSSteven Whitehouse } 14912ab9cd1cSSteven Whitehouse 14922ab9cd1cSSteven Whitehouse /* Check out the dir to be renamed */ 14932ab9cd1cSSteven Whitehouse 14942ab9cd1cSSteven Whitehouse if (dir_rename) { 14952b0143b5SDavid Howells error = gfs2_permission(d_inode(odentry), MAY_WRITE); 14962ab9cd1cSSteven Whitehouse if (error) 14972ab9cd1cSSteven Whitehouse goto out_gunlock; 14982ab9cd1cSSteven Whitehouse } 14992ab9cd1cSSteven Whitehouse 15003c1c0ae1SSteven Whitehouse if (nip == NULL) { 15013c1c0ae1SSteven Whitehouse error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name, &da); 15023c1c0ae1SSteven Whitehouse if (error) 15032ab9cd1cSSteven Whitehouse goto out_gunlock; 15043c1c0ae1SSteven Whitehouse } 15052ab9cd1cSSteven Whitehouse 15063c1c0ae1SSteven Whitehouse if (da.nr_blocks) { 15073c1c0ae1SSteven Whitehouse struct gfs2_alloc_parms ap = { .target = da.nr_blocks, }; 1508b8fbf471SAbhi Das error = gfs2_quota_lock_check(ndip, &ap); 15092ab9cd1cSSteven Whitehouse if (error) 15105407e242SBob Peterson goto out_gunlock; 15112ab9cd1cSSteven Whitehouse 15127b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(ndip, &ap); 15132ab9cd1cSSteven Whitehouse if (error) 15142ab9cd1cSSteven Whitehouse goto out_gunlock_q; 15152ab9cd1cSSteven Whitehouse 1516534cf9caSSteven Whitehouse error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(ndip, &da, 4) + 1517534cf9caSSteven Whitehouse 4 * RES_LEAF + 4, 0); 15182ab9cd1cSSteven Whitehouse if (error) 15192ab9cd1cSSteven Whitehouse goto out_ipreserv; 15202ab9cd1cSSteven Whitehouse } else { 15212ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, 4 * RES_DINODE + 15222ab9cd1cSSteven Whitehouse 5 * RES_LEAF + 4, 0); 15232ab9cd1cSSteven Whitehouse if (error) 15242ab9cd1cSSteven Whitehouse goto out_gunlock; 15252ab9cd1cSSteven Whitehouse } 15262ab9cd1cSSteven Whitehouse 15272ab9cd1cSSteven Whitehouse /* Remove the target file, if it exists */ 15282ab9cd1cSSteven Whitehouse 15294327a9bfSBob Peterson if (nip) 15304327a9bfSBob Peterson error = gfs2_unlink_inode(ndip, ndentry); 15312ab9cd1cSSteven Whitehouse 1532a63b7bbcSBenjamin Marzinski error = update_moved_ino(ip, ndip, dir_rename); 15332ab9cd1cSSteven Whitehouse if (error) 15342ab9cd1cSSteven Whitehouse goto out_end_trans; 15352ab9cd1cSSteven Whitehouse 15362ab9cd1cSSteven Whitehouse error = gfs2_dir_del(odip, odentry); 15372ab9cd1cSSteven Whitehouse if (error) 15382ab9cd1cSSteven Whitehouse goto out_end_trans; 15392ab9cd1cSSteven Whitehouse 15402b47dad8SSteven Whitehouse error = gfs2_dir_add(ndir, &ndentry->d_name, ip, &da); 15412ab9cd1cSSteven Whitehouse if (error) 15422ab9cd1cSSteven Whitehouse goto out_end_trans; 15432ab9cd1cSSteven Whitehouse 15442ab9cd1cSSteven Whitehouse out_end_trans: 15452ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 15462ab9cd1cSSteven Whitehouse out_ipreserv: 15473c1c0ae1SSteven Whitehouse if (da.nr_blocks) 15482ab9cd1cSSteven Whitehouse gfs2_inplace_release(ndip); 15492ab9cd1cSSteven Whitehouse out_gunlock_q: 15503c1c0ae1SSteven Whitehouse if (da.nr_blocks) 15512ab9cd1cSSteven Whitehouse gfs2_quota_unlock(ndip); 15522ab9cd1cSSteven Whitehouse out_gunlock: 15532b47dad8SSteven Whitehouse gfs2_dir_no_add(&da); 15542ab9cd1cSSteven Whitehouse while (x--) { 15552ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + x); 15562ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs + x); 15572ab9cd1cSSteven Whitehouse } 15582ab9cd1cSSteven Whitehouse out_gunlock_r: 15596df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&r_gh)) 15602ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&r_gh); 15612ab9cd1cSSteven Whitehouse out: 15622ab9cd1cSSteven Whitehouse return error; 15632ab9cd1cSSteven Whitehouse } 15642ab9cd1cSSteven Whitehouse 15652ab9cd1cSSteven Whitehouse /** 1566a63b7bbcSBenjamin Marzinski * gfs2_exchange - exchange two files 1567a63b7bbcSBenjamin Marzinski * @odir: Parent directory of old file name 1568a63b7bbcSBenjamin Marzinski * @odentry: The old dentry of the file 1569a63b7bbcSBenjamin Marzinski * @ndir: Parent directory of new file name 1570a63b7bbcSBenjamin Marzinski * @ndentry: The new dentry of the file 1571a63b7bbcSBenjamin Marzinski * @flags: The rename flags 1572a63b7bbcSBenjamin Marzinski * 1573a63b7bbcSBenjamin Marzinski * Returns: errno 1574a63b7bbcSBenjamin Marzinski */ 1575a63b7bbcSBenjamin Marzinski 1576a63b7bbcSBenjamin Marzinski static int gfs2_exchange(struct inode *odir, struct dentry *odentry, 1577a63b7bbcSBenjamin Marzinski struct inode *ndir, struct dentry *ndentry, 1578a63b7bbcSBenjamin Marzinski unsigned int flags) 1579a63b7bbcSBenjamin Marzinski { 1580a63b7bbcSBenjamin Marzinski struct gfs2_inode *odip = GFS2_I(odir); 1581a63b7bbcSBenjamin Marzinski struct gfs2_inode *ndip = GFS2_I(ndir); 1582a63b7bbcSBenjamin Marzinski struct gfs2_inode *oip = GFS2_I(odentry->d_inode); 1583a63b7bbcSBenjamin Marzinski struct gfs2_inode *nip = GFS2_I(ndentry->d_inode); 1584a63b7bbcSBenjamin Marzinski struct gfs2_sbd *sdp = GFS2_SB(odir); 15856df9f9a2SAndreas Gruenbacher struct gfs2_holder ghs[5], r_gh; 1586a63b7bbcSBenjamin Marzinski unsigned int num_gh; 1587a63b7bbcSBenjamin Marzinski unsigned int x; 1588a63b7bbcSBenjamin Marzinski umode_t old_mode = oip->i_inode.i_mode; 1589a63b7bbcSBenjamin Marzinski umode_t new_mode = nip->i_inode.i_mode; 1590a63b7bbcSBenjamin Marzinski int error; 1591a63b7bbcSBenjamin Marzinski 15926df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&r_gh); 1593a63b7bbcSBenjamin Marzinski error = gfs2_rindex_update(sdp); 1594a63b7bbcSBenjamin Marzinski if (error) 1595a63b7bbcSBenjamin Marzinski return error; 1596a63b7bbcSBenjamin Marzinski 1597a63b7bbcSBenjamin Marzinski if (odip != ndip) { 1598a63b7bbcSBenjamin Marzinski error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE, 1599a63b7bbcSBenjamin Marzinski 0, &r_gh); 1600a63b7bbcSBenjamin Marzinski if (error) 1601a63b7bbcSBenjamin Marzinski goto out; 1602a63b7bbcSBenjamin Marzinski 1603a63b7bbcSBenjamin Marzinski if (S_ISDIR(old_mode)) { 1604a63b7bbcSBenjamin Marzinski /* don't move a directory into its subdir */ 1605a63b7bbcSBenjamin Marzinski error = gfs2_ok_to_move(oip, ndip); 1606a63b7bbcSBenjamin Marzinski if (error) 1607a63b7bbcSBenjamin Marzinski goto out_gunlock_r; 1608a63b7bbcSBenjamin Marzinski } 1609a63b7bbcSBenjamin Marzinski 1610a63b7bbcSBenjamin Marzinski if (S_ISDIR(new_mode)) { 1611a63b7bbcSBenjamin Marzinski /* don't move a directory into its subdir */ 1612a63b7bbcSBenjamin Marzinski error = gfs2_ok_to_move(nip, odip); 1613a63b7bbcSBenjamin Marzinski if (error) 1614a63b7bbcSBenjamin Marzinski goto out_gunlock_r; 1615a63b7bbcSBenjamin Marzinski } 1616a63b7bbcSBenjamin Marzinski } 1617a63b7bbcSBenjamin Marzinski 1618a63b7bbcSBenjamin Marzinski num_gh = 1; 1619a63b7bbcSBenjamin Marzinski gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 1620a63b7bbcSBenjamin Marzinski if (odip != ndip) { 1621a63b7bbcSBenjamin Marzinski gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 1622a63b7bbcSBenjamin Marzinski num_gh++; 1623a63b7bbcSBenjamin Marzinski } 1624a63b7bbcSBenjamin Marzinski gfs2_holder_init(oip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 1625a63b7bbcSBenjamin Marzinski num_gh++; 1626a63b7bbcSBenjamin Marzinski 1627a63b7bbcSBenjamin Marzinski gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 1628a63b7bbcSBenjamin Marzinski num_gh++; 1629a63b7bbcSBenjamin Marzinski 1630a63b7bbcSBenjamin Marzinski for (x = 0; x < num_gh; x++) { 1631a63b7bbcSBenjamin Marzinski error = gfs2_glock_nq(ghs + x); 1632a63b7bbcSBenjamin Marzinski if (error) 1633a63b7bbcSBenjamin Marzinski goto out_gunlock; 1634a63b7bbcSBenjamin Marzinski } 1635a63b7bbcSBenjamin Marzinski 1636a63b7bbcSBenjamin Marzinski error = -ENOENT; 1637a63b7bbcSBenjamin Marzinski if (oip->i_inode.i_nlink == 0 || nip->i_inode.i_nlink == 0) 1638a63b7bbcSBenjamin Marzinski goto out_gunlock; 1639a63b7bbcSBenjamin Marzinski 1640a63b7bbcSBenjamin Marzinski error = gfs2_unlink_ok(odip, &odentry->d_name, oip); 1641a63b7bbcSBenjamin Marzinski if (error) 1642a63b7bbcSBenjamin Marzinski goto out_gunlock; 1643a63b7bbcSBenjamin Marzinski error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip); 1644a63b7bbcSBenjamin Marzinski if (error) 1645a63b7bbcSBenjamin Marzinski goto out_gunlock; 1646a63b7bbcSBenjamin Marzinski 1647a63b7bbcSBenjamin Marzinski if (S_ISDIR(old_mode)) { 1648a63b7bbcSBenjamin Marzinski error = gfs2_permission(odentry->d_inode, MAY_WRITE); 1649a63b7bbcSBenjamin Marzinski if (error) 1650a63b7bbcSBenjamin Marzinski goto out_gunlock; 1651a63b7bbcSBenjamin Marzinski } 1652a63b7bbcSBenjamin Marzinski if (S_ISDIR(new_mode)) { 1653a63b7bbcSBenjamin Marzinski error = gfs2_permission(ndentry->d_inode, MAY_WRITE); 1654a63b7bbcSBenjamin Marzinski if (error) 1655a63b7bbcSBenjamin Marzinski goto out_gunlock; 1656a63b7bbcSBenjamin Marzinski } 1657a63b7bbcSBenjamin Marzinski error = gfs2_trans_begin(sdp, 4 * RES_DINODE + 4 * RES_LEAF, 0); 1658a63b7bbcSBenjamin Marzinski if (error) 1659a63b7bbcSBenjamin Marzinski goto out_gunlock; 1660a63b7bbcSBenjamin Marzinski 1661a63b7bbcSBenjamin Marzinski error = update_moved_ino(oip, ndip, S_ISDIR(old_mode)); 1662a63b7bbcSBenjamin Marzinski if (error) 1663a63b7bbcSBenjamin Marzinski goto out_end_trans; 1664a63b7bbcSBenjamin Marzinski 1665a63b7bbcSBenjamin Marzinski error = update_moved_ino(nip, odip, S_ISDIR(new_mode)); 1666a63b7bbcSBenjamin Marzinski if (error) 1667a63b7bbcSBenjamin Marzinski goto out_end_trans; 1668a63b7bbcSBenjamin Marzinski 1669a63b7bbcSBenjamin Marzinski error = gfs2_dir_mvino(ndip, &ndentry->d_name, oip, 1670a63b7bbcSBenjamin Marzinski IF2DT(old_mode)); 1671a63b7bbcSBenjamin Marzinski if (error) 1672a63b7bbcSBenjamin Marzinski goto out_end_trans; 1673a63b7bbcSBenjamin Marzinski 1674a63b7bbcSBenjamin Marzinski error = gfs2_dir_mvino(odip, &odentry->d_name, nip, 1675a63b7bbcSBenjamin Marzinski IF2DT(new_mode)); 1676a63b7bbcSBenjamin Marzinski if (error) 1677a63b7bbcSBenjamin Marzinski goto out_end_trans; 1678a63b7bbcSBenjamin Marzinski 1679a63b7bbcSBenjamin Marzinski if (odip != ndip) { 1680a63b7bbcSBenjamin Marzinski if (S_ISDIR(new_mode) && !S_ISDIR(old_mode)) { 1681a63b7bbcSBenjamin Marzinski inc_nlink(&odip->i_inode); 1682a63b7bbcSBenjamin Marzinski drop_nlink(&ndip->i_inode); 1683a63b7bbcSBenjamin Marzinski } else if (S_ISDIR(old_mode) && !S_ISDIR(new_mode)) { 1684a63b7bbcSBenjamin Marzinski inc_nlink(&ndip->i_inode); 1685a63b7bbcSBenjamin Marzinski drop_nlink(&odip->i_inode); 1686a63b7bbcSBenjamin Marzinski } 1687a63b7bbcSBenjamin Marzinski } 1688a63b7bbcSBenjamin Marzinski mark_inode_dirty(&ndip->i_inode); 1689a63b7bbcSBenjamin Marzinski if (odip != ndip) 1690a63b7bbcSBenjamin Marzinski mark_inode_dirty(&odip->i_inode); 1691a63b7bbcSBenjamin Marzinski 1692a63b7bbcSBenjamin Marzinski out_end_trans: 1693a63b7bbcSBenjamin Marzinski gfs2_trans_end(sdp); 1694a63b7bbcSBenjamin Marzinski out_gunlock: 1695a63b7bbcSBenjamin Marzinski while (x--) { 1696a63b7bbcSBenjamin Marzinski gfs2_glock_dq(ghs + x); 1697a63b7bbcSBenjamin Marzinski gfs2_holder_uninit(ghs + x); 1698a63b7bbcSBenjamin Marzinski } 1699a63b7bbcSBenjamin Marzinski out_gunlock_r: 17006df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&r_gh)) 1701a63b7bbcSBenjamin Marzinski gfs2_glock_dq_uninit(&r_gh); 1702a63b7bbcSBenjamin Marzinski out: 1703a63b7bbcSBenjamin Marzinski return error; 1704a63b7bbcSBenjamin Marzinski } 1705a63b7bbcSBenjamin Marzinski 1706a63b7bbcSBenjamin Marzinski static int gfs2_rename2(struct inode *odir, struct dentry *odentry, 1707a63b7bbcSBenjamin Marzinski struct inode *ndir, struct dentry *ndentry, 1708a63b7bbcSBenjamin Marzinski unsigned int flags) 1709a63b7bbcSBenjamin Marzinski { 1710a63b7bbcSBenjamin Marzinski flags &= ~RENAME_NOREPLACE; 1711a63b7bbcSBenjamin Marzinski 1712a63b7bbcSBenjamin Marzinski if (flags & ~RENAME_EXCHANGE) 1713a63b7bbcSBenjamin Marzinski return -EINVAL; 1714a63b7bbcSBenjamin Marzinski 1715a63b7bbcSBenjamin Marzinski if (flags & RENAME_EXCHANGE) 1716a63b7bbcSBenjamin Marzinski return gfs2_exchange(odir, odentry, ndir, ndentry, flags); 1717a63b7bbcSBenjamin Marzinski 1718a63b7bbcSBenjamin Marzinski return gfs2_rename(odir, odentry, ndir, ndentry); 1719a63b7bbcSBenjamin Marzinski } 1720a63b7bbcSBenjamin Marzinski 1721a63b7bbcSBenjamin Marzinski /** 17226b255391SAl Viro * gfs2_get_link - Follow a symbolic link 17232ab9cd1cSSteven Whitehouse * @dentry: The dentry of the link 17246b255391SAl Viro * @inode: The inode of the link 1725fceef393SAl Viro * @done: destructor for return value 17262ab9cd1cSSteven Whitehouse * 17272ab9cd1cSSteven Whitehouse * This can handle symlinks of any size. 17282ab9cd1cSSteven Whitehouse * 17292ab9cd1cSSteven Whitehouse * Returns: 0 on success or error code 17302ab9cd1cSSteven Whitehouse */ 17312ab9cd1cSSteven Whitehouse 17326b255391SAl Viro static const char *gfs2_get_link(struct dentry *dentry, 1733fceef393SAl Viro struct inode *inode, 1734fceef393SAl Viro struct delayed_call *done) 17352ab9cd1cSSteven Whitehouse { 17366b255391SAl Viro struct gfs2_inode *ip = GFS2_I(inode); 17372ab9cd1cSSteven Whitehouse struct gfs2_holder i_gh; 17382ab9cd1cSSteven Whitehouse struct buffer_head *dibh; 1739160b4026SSteven Whitehouse unsigned int size; 17402ab9cd1cSSteven Whitehouse char *buf; 17412ab9cd1cSSteven Whitehouse int error; 17422ab9cd1cSSteven Whitehouse 17436b255391SAl Viro if (!dentry) 17446b255391SAl Viro return ERR_PTR(-ECHILD); 17456b255391SAl Viro 17462ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh); 17472ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(&i_gh); 17482ab9cd1cSSteven Whitehouse if (error) { 17492ab9cd1cSSteven Whitehouse gfs2_holder_uninit(&i_gh); 1750680baacbSAl Viro return ERR_PTR(error); 17512ab9cd1cSSteven Whitehouse } 17522ab9cd1cSSteven Whitehouse 17532ab9cd1cSSteven Whitehouse size = (unsigned int)i_size_read(&ip->i_inode); 17542ab9cd1cSSteven Whitehouse if (size == 0) { 17552ab9cd1cSSteven Whitehouse gfs2_consist_inode(ip); 17562ab9cd1cSSteven Whitehouse buf = ERR_PTR(-EIO); 17572ab9cd1cSSteven Whitehouse goto out; 17582ab9cd1cSSteven Whitehouse } 17592ab9cd1cSSteven Whitehouse 17602ab9cd1cSSteven Whitehouse error = gfs2_meta_inode_buffer(ip, &dibh); 17612ab9cd1cSSteven Whitehouse if (error) { 17622ab9cd1cSSteven Whitehouse buf = ERR_PTR(error); 17632ab9cd1cSSteven Whitehouse goto out; 17642ab9cd1cSSteven Whitehouse } 17652ab9cd1cSSteven Whitehouse 1766160b4026SSteven Whitehouse buf = kzalloc(size + 1, GFP_NOFS); 17672ab9cd1cSSteven Whitehouse if (!buf) 17682ab9cd1cSSteven Whitehouse buf = ERR_PTR(-ENOMEM); 17692ab9cd1cSSteven Whitehouse else 1770160b4026SSteven Whitehouse memcpy(buf, dibh->b_data + sizeof(struct gfs2_dinode), size); 17712ab9cd1cSSteven Whitehouse brelse(dibh); 17722ab9cd1cSSteven Whitehouse out: 17732ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&i_gh); 1774680baacbSAl Viro if (!IS_ERR(buf)) 1775fceef393SAl Viro set_delayed_call(done, kfree_link, buf); 1776680baacbSAl Viro return buf; 17772ab9cd1cSSteven Whitehouse } 17782ab9cd1cSSteven Whitehouse 17792ab9cd1cSSteven Whitehouse /** 17802ab9cd1cSSteven Whitehouse * gfs2_permission - 17812ab9cd1cSSteven Whitehouse * @inode: The inode 17822ab9cd1cSSteven Whitehouse * @mask: The mask to be tested 17832ab9cd1cSSteven Whitehouse * @flags: Indicates whether this is an RCU path walk or not 17842ab9cd1cSSteven Whitehouse * 17852ab9cd1cSSteven Whitehouse * This may be called from the VFS directly, or from within GFS2 with the 17862ab9cd1cSSteven Whitehouse * inode locked, so we look to see if the glock is already locked and only 17872ab9cd1cSSteven Whitehouse * lock the glock if its not already been done. 17882ab9cd1cSSteven Whitehouse * 17892ab9cd1cSSteven Whitehouse * Returns: errno 17902ab9cd1cSSteven Whitehouse */ 17912ab9cd1cSSteven Whitehouse 179210556cb2SAl Viro int gfs2_permission(struct inode *inode, int mask) 17932ab9cd1cSSteven Whitehouse { 17942ab9cd1cSSteven Whitehouse struct gfs2_inode *ip; 17952ab9cd1cSSteven Whitehouse struct gfs2_holder i_gh; 17962ab9cd1cSSteven Whitehouse int error; 17972ab9cd1cSSteven Whitehouse 17986df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&i_gh); 17992ab9cd1cSSteven Whitehouse ip = GFS2_I(inode); 18002ab9cd1cSSteven Whitehouse if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) { 180110556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 18022ab9cd1cSSteven Whitehouse return -ECHILD; 18032ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); 18042ab9cd1cSSteven Whitehouse if (error) 18052ab9cd1cSSteven Whitehouse return error; 18062ab9cd1cSSteven Whitehouse } 18072ab9cd1cSSteven Whitehouse 18082ab9cd1cSSteven Whitehouse if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode)) 1809337684a1SEryu Guan error = -EPERM; 18102ab9cd1cSSteven Whitehouse else 18112830ba7fSAl Viro error = generic_permission(inode, mask); 18126df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&i_gh)) 18132ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&i_gh); 18142ab9cd1cSSteven Whitehouse 18152ab9cd1cSSteven Whitehouse return error; 18162ab9cd1cSSteven Whitehouse } 18172ab9cd1cSSteven Whitehouse 1818ab9bbda0SSteven Whitehouse static int __gfs2_setattr_simple(struct inode *inode, struct iattr *attr) 18192ab9cd1cSSteven Whitehouse { 18202ab9cd1cSSteven Whitehouse setattr_copy(inode, attr); 18212ab9cd1cSSteven Whitehouse mark_inode_dirty(inode); 18222ab9cd1cSSteven Whitehouse return 0; 18232ab9cd1cSSteven Whitehouse } 18242ab9cd1cSSteven Whitehouse 18252ab9cd1cSSteven Whitehouse /** 18262ab9cd1cSSteven Whitehouse * gfs2_setattr_simple - 18272ab9cd1cSSteven Whitehouse * @ip: 18282ab9cd1cSSteven Whitehouse * @attr: 18292ab9cd1cSSteven Whitehouse * 18302ab9cd1cSSteven Whitehouse * Returns: errno 18312ab9cd1cSSteven Whitehouse */ 18322ab9cd1cSSteven Whitehouse 1833ab9bbda0SSteven Whitehouse int gfs2_setattr_simple(struct inode *inode, struct iattr *attr) 18342ab9cd1cSSteven Whitehouse { 18352ab9cd1cSSteven Whitehouse int error; 18362ab9cd1cSSteven Whitehouse 18372ab9cd1cSSteven Whitehouse if (current->journal_info) 1838ab9bbda0SSteven Whitehouse return __gfs2_setattr_simple(inode, attr); 18392ab9cd1cSSteven Whitehouse 1840ab9bbda0SSteven Whitehouse error = gfs2_trans_begin(GFS2_SB(inode), RES_DINODE, 0); 18412ab9cd1cSSteven Whitehouse if (error) 18422ab9cd1cSSteven Whitehouse return error; 18432ab9cd1cSSteven Whitehouse 1844ab9bbda0SSteven Whitehouse error = __gfs2_setattr_simple(inode, attr); 1845ab9bbda0SSteven Whitehouse gfs2_trans_end(GFS2_SB(inode)); 18462ab9cd1cSSteven Whitehouse return error; 18472ab9cd1cSSteven Whitehouse } 18482ab9cd1cSSteven Whitehouse 18492ab9cd1cSSteven Whitehouse static int setattr_chown(struct inode *inode, struct iattr *attr) 18502ab9cd1cSSteven Whitehouse { 18512ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 18522ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 18537c06b5d6SEric W. Biederman kuid_t ouid, nuid; 18547c06b5d6SEric W. Biederman kgid_t ogid, ngid; 18552ab9cd1cSSteven Whitehouse int error; 1856b8fbf471SAbhi Das struct gfs2_alloc_parms ap; 18572ab9cd1cSSteven Whitehouse 18582ab9cd1cSSteven Whitehouse ouid = inode->i_uid; 18592ab9cd1cSSteven Whitehouse ogid = inode->i_gid; 18602ab9cd1cSSteven Whitehouse nuid = attr->ia_uid; 18612ab9cd1cSSteven Whitehouse ngid = attr->ia_gid; 18622ab9cd1cSSteven Whitehouse 18636b24c0d2SEric W. Biederman if (!(attr->ia_valid & ATTR_UID) || uid_eq(ouid, nuid)) 1864f4108a60SEric W. Biederman ouid = nuid = NO_UID_QUOTA_CHANGE; 18656b24c0d2SEric W. Biederman if (!(attr->ia_valid & ATTR_GID) || gid_eq(ogid, ngid)) 1866f4108a60SEric W. Biederman ogid = ngid = NO_GID_QUOTA_CHANGE; 18672ab9cd1cSSteven Whitehouse 1868b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ip); 186962e96cf8SBob Peterson if (error) 187062e96cf8SBob Peterson goto out; 187162e96cf8SBob Peterson 187262e96cf8SBob Peterson error = gfs2_rindex_update(sdp); 187362e96cf8SBob Peterson if (error) 187462e96cf8SBob Peterson goto out; 187562e96cf8SBob Peterson 187662e96cf8SBob Peterson error = gfs2_quota_lock(ip, nuid, ngid); 187762e96cf8SBob Peterson if (error) 187862e96cf8SBob Peterson goto out; 187962e96cf8SBob Peterson 1880b8fbf471SAbhi Das ap.target = gfs2_get_inode_blocks(&ip->i_inode); 1881b8fbf471SAbhi Das 18826b24c0d2SEric W. Biederman if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) || 18836b24c0d2SEric W. Biederman !gid_eq(ogid, NO_GID_QUOTA_CHANGE)) { 1884b8fbf471SAbhi Das error = gfs2_quota_check(ip, nuid, ngid, &ap); 18852ab9cd1cSSteven Whitehouse if (error) 18862ab9cd1cSSteven Whitehouse goto out_gunlock_q; 18872ab9cd1cSSteven Whitehouse } 18882ab9cd1cSSteven Whitehouse 18892ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0); 18902ab9cd1cSSteven Whitehouse if (error) 18912ab9cd1cSSteven Whitehouse goto out_gunlock_q; 18922ab9cd1cSSteven Whitehouse 1893ab9bbda0SSteven Whitehouse error = gfs2_setattr_simple(inode, attr); 18942ab9cd1cSSteven Whitehouse if (error) 18952ab9cd1cSSteven Whitehouse goto out_end_trans; 18962ab9cd1cSSteven Whitehouse 18976b24c0d2SEric W. Biederman if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) || 18986b24c0d2SEric W. Biederman !gid_eq(ogid, NO_GID_QUOTA_CHANGE)) { 189939a72580SAbhi Das gfs2_quota_change(ip, -(s64)ap.target, ouid, ogid); 1900b8fbf471SAbhi Das gfs2_quota_change(ip, ap.target, nuid, ngid); 19012ab9cd1cSSteven Whitehouse } 19022ab9cd1cSSteven Whitehouse 19032ab9cd1cSSteven Whitehouse out_end_trans: 19042ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 19052ab9cd1cSSteven Whitehouse out_gunlock_q: 19062ab9cd1cSSteven Whitehouse gfs2_quota_unlock(ip); 190762e96cf8SBob Peterson out: 19082ab9cd1cSSteven Whitehouse return error; 19092ab9cd1cSSteven Whitehouse } 19102ab9cd1cSSteven Whitehouse 19112ab9cd1cSSteven Whitehouse /** 19122ab9cd1cSSteven Whitehouse * gfs2_setattr - Change attributes on an inode 19132ab9cd1cSSteven Whitehouse * @dentry: The dentry which is changing 19142ab9cd1cSSteven Whitehouse * @attr: The structure describing the change 19152ab9cd1cSSteven Whitehouse * 19162ab9cd1cSSteven Whitehouse * The VFS layer wants to change one or more of an inodes attributes. Write 19172ab9cd1cSSteven Whitehouse * that change out to disk. 19182ab9cd1cSSteven Whitehouse * 19192ab9cd1cSSteven Whitehouse * Returns: errno 19202ab9cd1cSSteven Whitehouse */ 19212ab9cd1cSSteven Whitehouse 19222ab9cd1cSSteven Whitehouse static int gfs2_setattr(struct dentry *dentry, struct iattr *attr) 19232ab9cd1cSSteven Whitehouse { 19242b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 19252ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 19262ab9cd1cSSteven Whitehouse struct gfs2_holder i_gh; 19272ab9cd1cSSteven Whitehouse int error; 19282ab9cd1cSSteven Whitehouse 1929b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ip); 19300a305e49SBob Peterson if (error) 19310a305e49SBob Peterson return error; 19320a305e49SBob Peterson 19332ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); 19342ab9cd1cSSteven Whitehouse if (error) 19352ab9cd1cSSteven Whitehouse return error; 19362ab9cd1cSSteven Whitehouse 19372ab9cd1cSSteven Whitehouse error = -EPERM; 19382ab9cd1cSSteven Whitehouse if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) 19392ab9cd1cSSteven Whitehouse goto out; 19402ab9cd1cSSteven Whitehouse 194131051c85SJan Kara error = setattr_prepare(dentry, attr); 19422ab9cd1cSSteven Whitehouse if (error) 19432ab9cd1cSSteven Whitehouse goto out; 19442ab9cd1cSSteven Whitehouse 19452ab9cd1cSSteven Whitehouse if (attr->ia_valid & ATTR_SIZE) 19462ab9cd1cSSteven Whitehouse error = gfs2_setattr_size(inode, attr->ia_size); 19472ab9cd1cSSteven Whitehouse else if (attr->ia_valid & (ATTR_UID | ATTR_GID)) 19482ab9cd1cSSteven Whitehouse error = setattr_chown(inode, attr); 1949e01580bfSChristoph Hellwig else { 1950ab9bbda0SSteven Whitehouse error = gfs2_setattr_simple(inode, attr); 1951e01580bfSChristoph Hellwig if (!error && attr->ia_valid & ATTR_MODE) 1952e01580bfSChristoph Hellwig error = posix_acl_chmod(inode, inode->i_mode); 1953e01580bfSChristoph Hellwig } 19542ab9cd1cSSteven Whitehouse 19552ab9cd1cSSteven Whitehouse out: 19562ab9cd1cSSteven Whitehouse if (!error) 19572ab9cd1cSSteven Whitehouse mark_inode_dirty(inode); 1958ab9bbda0SSteven Whitehouse gfs2_glock_dq_uninit(&i_gh); 19592ab9cd1cSSteven Whitehouse return error; 19602ab9cd1cSSteven Whitehouse } 19612ab9cd1cSSteven Whitehouse 19622ab9cd1cSSteven Whitehouse /** 19632ab9cd1cSSteven Whitehouse * gfs2_getattr - Read out an inode's attributes 1964a528d35eSDavid Howells * @path: Object to query 19652ab9cd1cSSteven Whitehouse * @stat: The inode's stats 1966a528d35eSDavid Howells * @request_mask: Mask of STATX_xxx flags indicating the caller's interests 1967a528d35eSDavid Howells * @flags: AT_STATX_xxx setting 19682ab9cd1cSSteven Whitehouse * 19692ab9cd1cSSteven Whitehouse * This may be called from the VFS directly, or from within GFS2 with the 19702ab9cd1cSSteven Whitehouse * inode locked, so we look to see if the glock is already locked and only 19712ab9cd1cSSteven Whitehouse * lock the glock if its not already been done. Note that its the NFS 19722ab9cd1cSSteven Whitehouse * readdirplus operation which causes this to be called (from filldir) 19732ab9cd1cSSteven Whitehouse * with the glock already held. 19742ab9cd1cSSteven Whitehouse * 19752ab9cd1cSSteven Whitehouse * Returns: errno 19762ab9cd1cSSteven Whitehouse */ 19772ab9cd1cSSteven Whitehouse 1978a528d35eSDavid Howells static int gfs2_getattr(const struct path *path, struct kstat *stat, 1979a528d35eSDavid Howells u32 request_mask, unsigned int flags) 19802ab9cd1cSSteven Whitehouse { 1981a528d35eSDavid Howells struct inode *inode = d_inode(path->dentry); 19822ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 19832ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 19842ab9cd1cSSteven Whitehouse int error; 19852ab9cd1cSSteven Whitehouse 19866df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&gh); 19872ab9cd1cSSteven Whitehouse if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) { 19882ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); 19892ab9cd1cSSteven Whitehouse if (error) 19902ab9cd1cSSteven Whitehouse return error; 19912ab9cd1cSSteven Whitehouse } 19922ab9cd1cSSteven Whitehouse 19932ab9cd1cSSteven Whitehouse generic_fillattr(inode, stat); 19946df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&gh)) 19952ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&gh); 19962ab9cd1cSSteven Whitehouse 19972ab9cd1cSSteven Whitehouse return 0; 19982ab9cd1cSSteven Whitehouse } 19992ab9cd1cSSteven Whitehouse 20002ab9cd1cSSteven Whitehouse static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 20012ab9cd1cSSteven Whitehouse u64 start, u64 len) 20022ab9cd1cSSteven Whitehouse { 20032ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 20042ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 20052ab9cd1cSSteven Whitehouse int ret; 20062ab9cd1cSSteven Whitehouse 20072ab9cd1cSSteven Whitehouse ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC); 20082ab9cd1cSSteven Whitehouse if (ret) 20092ab9cd1cSSteven Whitehouse return ret; 20102ab9cd1cSSteven Whitehouse 20115955102cSAl Viro inode_lock(inode); 20122ab9cd1cSSteven Whitehouse 20132ab9cd1cSSteven Whitehouse ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh); 20142ab9cd1cSSteven Whitehouse if (ret) 20152ab9cd1cSSteven Whitehouse goto out; 20162ab9cd1cSSteven Whitehouse 20172ab9cd1cSSteven Whitehouse if (gfs2_is_stuffed(ip)) { 20182ab9cd1cSSteven Whitehouse u64 phys = ip->i_no_addr << inode->i_blkbits; 20192ab9cd1cSSteven Whitehouse u64 size = i_size_read(inode); 20202ab9cd1cSSteven Whitehouse u32 flags = FIEMAP_EXTENT_LAST|FIEMAP_EXTENT_NOT_ALIGNED| 20212ab9cd1cSSteven Whitehouse FIEMAP_EXTENT_DATA_INLINE; 20222ab9cd1cSSteven Whitehouse phys += sizeof(struct gfs2_dinode); 20232ab9cd1cSSteven Whitehouse phys += start; 20242ab9cd1cSSteven Whitehouse if (start + len > size) 20252ab9cd1cSSteven Whitehouse len = size - start; 20262ab9cd1cSSteven Whitehouse if (start < size) 20272ab9cd1cSSteven Whitehouse ret = fiemap_fill_next_extent(fieinfo, start, phys, 20282ab9cd1cSSteven Whitehouse len, flags); 20292ab9cd1cSSteven Whitehouse if (ret == 1) 20302ab9cd1cSSteven Whitehouse ret = 0; 20312ab9cd1cSSteven Whitehouse } else { 20322ab9cd1cSSteven Whitehouse ret = __generic_block_fiemap(inode, fieinfo, start, len, 20332ab9cd1cSSteven Whitehouse gfs2_block_map); 20342ab9cd1cSSteven Whitehouse } 20352ab9cd1cSSteven Whitehouse 20362ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&gh); 20372ab9cd1cSSteven Whitehouse out: 20385955102cSAl Viro inode_unlock(inode); 20392ab9cd1cSSteven Whitehouse return ret; 20402ab9cd1cSSteven Whitehouse } 20412ab9cd1cSSteven Whitehouse 20422ab9cd1cSSteven Whitehouse const struct inode_operations gfs2_file_iops = { 20432ab9cd1cSSteven Whitehouse .permission = gfs2_permission, 20442ab9cd1cSSteven Whitehouse .setattr = gfs2_setattr, 20452ab9cd1cSSteven Whitehouse .getattr = gfs2_getattr, 20462ab9cd1cSSteven Whitehouse .listxattr = gfs2_listxattr, 20472ab9cd1cSSteven Whitehouse .fiemap = gfs2_fiemap, 20484e34e719SChristoph Hellwig .get_acl = gfs2_get_acl, 2049e01580bfSChristoph Hellwig .set_acl = gfs2_set_acl, 20502ab9cd1cSSteven Whitehouse }; 20512ab9cd1cSSteven Whitehouse 20522ab9cd1cSSteven Whitehouse const struct inode_operations gfs2_dir_iops = { 20532ab9cd1cSSteven Whitehouse .create = gfs2_create, 20542ab9cd1cSSteven Whitehouse .lookup = gfs2_lookup, 20552ab9cd1cSSteven Whitehouse .link = gfs2_link, 20562ab9cd1cSSteven Whitehouse .unlink = gfs2_unlink, 20572ab9cd1cSSteven Whitehouse .symlink = gfs2_symlink, 20582ab9cd1cSSteven Whitehouse .mkdir = gfs2_mkdir, 20592ab9cd1cSSteven Whitehouse .rmdir = gfs2_unlink, 20602ab9cd1cSSteven Whitehouse .mknod = gfs2_mknod, 20612773bf00SMiklos Szeredi .rename = gfs2_rename2, 20622ab9cd1cSSteven Whitehouse .permission = gfs2_permission, 20632ab9cd1cSSteven Whitehouse .setattr = gfs2_setattr, 20642ab9cd1cSSteven Whitehouse .getattr = gfs2_getattr, 20652ab9cd1cSSteven Whitehouse .listxattr = gfs2_listxattr, 20662ab9cd1cSSteven Whitehouse .fiemap = gfs2_fiemap, 20674e34e719SChristoph Hellwig .get_acl = gfs2_get_acl, 2068e01580bfSChristoph Hellwig .set_acl = gfs2_set_acl, 20696d4ade98SSteven Whitehouse .atomic_open = gfs2_atomic_open, 20702ab9cd1cSSteven Whitehouse }; 20712ab9cd1cSSteven Whitehouse 20722ab9cd1cSSteven Whitehouse const struct inode_operations gfs2_symlink_iops = { 20736b255391SAl Viro .get_link = gfs2_get_link, 20742ab9cd1cSSteven Whitehouse .permission = gfs2_permission, 20752ab9cd1cSSteven Whitehouse .setattr = gfs2_setattr, 20762ab9cd1cSSteven Whitehouse .getattr = gfs2_getattr, 20772ab9cd1cSSteven Whitehouse .listxattr = gfs2_listxattr, 20782ab9cd1cSSteven Whitehouse .fiemap = gfs2_fiemap, 20792ab9cd1cSSteven Whitehouse }; 20802ab9cd1cSSteven Whitehouse 2081