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> 162ab9cd1cSSteven Whitehouse #include <linux/xattr.h> 172ab9cd1cSSteven Whitehouse #include <linux/posix_acl.h> 182ab9cd1cSSteven Whitehouse #include <linux/gfs2_ondisk.h> 192ab9cd1cSSteven Whitehouse #include <linux/crc32.h> 202ab9cd1cSSteven Whitehouse #include <linux/fiemap.h> 212ab9cd1cSSteven Whitehouse #include <linux/security.h> 222ab9cd1cSSteven Whitehouse #include <asm/uaccess.h> 232ab9cd1cSSteven Whitehouse 242ab9cd1cSSteven Whitehouse #include "gfs2.h" 252ab9cd1cSSteven Whitehouse #include "incore.h" 262ab9cd1cSSteven Whitehouse #include "acl.h" 272ab9cd1cSSteven Whitehouse #include "bmap.h" 282ab9cd1cSSteven Whitehouse #include "dir.h" 292ab9cd1cSSteven Whitehouse #include "xattr.h" 302ab9cd1cSSteven Whitehouse #include "glock.h" 312ab9cd1cSSteven Whitehouse #include "inode.h" 322ab9cd1cSSteven Whitehouse #include "meta_io.h" 332ab9cd1cSSteven Whitehouse #include "quota.h" 342ab9cd1cSSteven Whitehouse #include "rgrp.h" 352ab9cd1cSSteven Whitehouse #include "trans.h" 362ab9cd1cSSteven Whitehouse #include "util.h" 372ab9cd1cSSteven Whitehouse #include "super.h" 382ab9cd1cSSteven Whitehouse #include "glops.h" 392ab9cd1cSSteven Whitehouse 40ff34245dSBob Peterson struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr) 412ab9cd1cSSteven Whitehouse { 42ff34245dSBob Peterson return ilookup(sb, (unsigned long)no_addr); 432ab9cd1cSSteven Whitehouse } 442ab9cd1cSSteven Whitehouse 452ab9cd1cSSteven Whitehouse /** 462ab9cd1cSSteven Whitehouse * gfs2_set_iop - Sets inode operations 472ab9cd1cSSteven Whitehouse * @inode: The inode with correct i_mode filled in 482ab9cd1cSSteven Whitehouse * 492ab9cd1cSSteven Whitehouse * GFS2 lookup code fills in vfs inode contents based on info obtained 502ab9cd1cSSteven Whitehouse * from directory entry inside gfs2_inode_lookup(). 512ab9cd1cSSteven Whitehouse */ 522ab9cd1cSSteven Whitehouse 532ab9cd1cSSteven Whitehouse static void gfs2_set_iop(struct inode *inode) 542ab9cd1cSSteven Whitehouse { 552ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 562ab9cd1cSSteven Whitehouse umode_t mode = inode->i_mode; 572ab9cd1cSSteven Whitehouse 582ab9cd1cSSteven Whitehouse if (S_ISREG(mode)) { 592ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_file_iops; 602ab9cd1cSSteven Whitehouse if (gfs2_localflocks(sdp)) 612ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_file_fops_nolock; 622ab9cd1cSSteven Whitehouse else 632ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_file_fops; 642ab9cd1cSSteven Whitehouse } else if (S_ISDIR(mode)) { 652ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_dir_iops; 662ab9cd1cSSteven Whitehouse if (gfs2_localflocks(sdp)) 672ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_dir_fops_nolock; 682ab9cd1cSSteven Whitehouse else 692ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_dir_fops; 702ab9cd1cSSteven Whitehouse } else if (S_ISLNK(mode)) { 712ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_symlink_iops; 722ab9cd1cSSteven Whitehouse } else { 732ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_file_iops; 742ab9cd1cSSteven Whitehouse init_special_inode(inode, inode->i_mode, inode->i_rdev); 752ab9cd1cSSteven Whitehouse } 762ab9cd1cSSteven Whitehouse } 772ab9cd1cSSteven Whitehouse 782ab9cd1cSSteven Whitehouse /** 792ab9cd1cSSteven Whitehouse * gfs2_inode_lookup - Lookup an inode 802ab9cd1cSSteven Whitehouse * @sb: The super block 812ab9cd1cSSteven Whitehouse * @no_addr: The inode number 822ab9cd1cSSteven Whitehouse * @type: The type of the inode 832ab9cd1cSSteven Whitehouse * 842ab9cd1cSSteven Whitehouse * Returns: A VFS inode, or an error 852ab9cd1cSSteven Whitehouse */ 862ab9cd1cSSteven Whitehouse 872ab9cd1cSSteven Whitehouse struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, 8873b462d2SBob Peterson u64 no_addr, u64 no_formal_ino) 892ab9cd1cSSteven Whitehouse { 902ab9cd1cSSteven Whitehouse struct inode *inode; 912ab9cd1cSSteven Whitehouse struct gfs2_inode *ip; 922ab9cd1cSSteven Whitehouse struct gfs2_glock *io_gl = NULL; 932ab9cd1cSSteven Whitehouse int error; 942ab9cd1cSSteven Whitehouse 95ff34245dSBob Peterson inode = iget_locked(sb, (unsigned long)no_addr); 962ab9cd1cSSteven Whitehouse if (!inode) 97ac3beb6aSSteven Whitehouse return ERR_PTR(-ENOMEM); 982ab9cd1cSSteven Whitehouse 99e97321faSBob Peterson ip = GFS2_I(inode); 100e97321faSBob Peterson ip->i_no_addr = no_addr; 101e97321faSBob Peterson 1022ab9cd1cSSteven Whitehouse if (inode->i_state & I_NEW) { 1032ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 1042ab9cd1cSSteven Whitehouse ip->i_no_formal_ino = no_formal_ino; 1052ab9cd1cSSteven Whitehouse 1062ab9cd1cSSteven Whitehouse error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); 1072ab9cd1cSSteven Whitehouse if (unlikely(error)) 1082ab9cd1cSSteven Whitehouse goto fail; 1092ab9cd1cSSteven Whitehouse ip->i_gl->gl_object = ip; 1102ab9cd1cSSteven Whitehouse 1112ab9cd1cSSteven Whitehouse error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl); 1122ab9cd1cSSteven Whitehouse if (unlikely(error)) 1132ab9cd1cSSteven Whitehouse goto fail_put; 1142ab9cd1cSSteven Whitehouse 1152ab9cd1cSSteven Whitehouse set_bit(GIF_INVALID, &ip->i_flags); 1162ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); 1172ab9cd1cSSteven Whitehouse if (unlikely(error)) 1182ab9cd1cSSteven Whitehouse goto fail_iopen; 1192ab9cd1cSSteven Whitehouse 1202ab9cd1cSSteven Whitehouse ip->i_iopen_gh.gh_gl->gl_object = ip; 1212ab9cd1cSSteven Whitehouse gfs2_glock_put(io_gl); 1222ab9cd1cSSteven Whitehouse io_gl = NULL; 1232ab9cd1cSSteven Whitehouse 1242ab9cd1cSSteven Whitehouse if (type == DT_UNKNOWN) { 1252ab9cd1cSSteven Whitehouse /* Inode glock must be locked already */ 1262ab9cd1cSSteven Whitehouse error = gfs2_inode_refresh(GFS2_I(inode)); 1272ab9cd1cSSteven Whitehouse if (error) 1282ab9cd1cSSteven Whitehouse goto fail_refresh; 1292ab9cd1cSSteven Whitehouse } else { 1302ab9cd1cSSteven Whitehouse inode->i_mode = DT2IF(type); 1312ab9cd1cSSteven Whitehouse } 1322ab9cd1cSSteven Whitehouse 1332ab9cd1cSSteven Whitehouse gfs2_set_iop(inode); 1342ab9cd1cSSteven Whitehouse unlock_new_inode(inode); 1352ab9cd1cSSteven Whitehouse } 1362ab9cd1cSSteven Whitehouse 1372ab9cd1cSSteven Whitehouse return inode; 1382ab9cd1cSSteven Whitehouse 1392ab9cd1cSSteven Whitehouse fail_refresh: 140a6a4d98bSBob Peterson ip->i_iopen_gh.gh_flags |= GL_NOCACHE; 1412ab9cd1cSSteven Whitehouse ip->i_iopen_gh.gh_gl->gl_object = NULL; 14286d067a7SBob Peterson gfs2_glock_dq_wait(&ip->i_iopen_gh); 14386d067a7SBob Peterson gfs2_holder_uninit(&ip->i_iopen_gh); 1442ab9cd1cSSteven Whitehouse fail_iopen: 1452ab9cd1cSSteven Whitehouse if (io_gl) 1462ab9cd1cSSteven Whitehouse gfs2_glock_put(io_gl); 1472ab9cd1cSSteven Whitehouse fail_put: 1482ab9cd1cSSteven Whitehouse ip->i_gl->gl_object = NULL; 1492ab9cd1cSSteven Whitehouse fail: 1502ab9cd1cSSteven Whitehouse iget_failed(inode); 1512ab9cd1cSSteven Whitehouse return ERR_PTR(error); 1522ab9cd1cSSteven Whitehouse } 1532ab9cd1cSSteven Whitehouse 1542ab9cd1cSSteven Whitehouse struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr, 1552ab9cd1cSSteven Whitehouse u64 *no_formal_ino, unsigned int blktype) 1562ab9cd1cSSteven Whitehouse { 1572ab9cd1cSSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 1582ab9cd1cSSteven Whitehouse struct gfs2_holder i_gh; 1592ab9cd1cSSteven Whitehouse struct inode *inode = NULL; 1602ab9cd1cSSteven Whitehouse int error; 1612ab9cd1cSSteven Whitehouse 1622ab9cd1cSSteven Whitehouse /* Must not read in block until block type is verified */ 1632ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_num(sdp, no_addr, &gfs2_inode_glops, 1642ab9cd1cSSteven Whitehouse LM_ST_EXCLUSIVE, GL_SKIP, &i_gh); 1652ab9cd1cSSteven Whitehouse if (error) 1662ab9cd1cSSteven Whitehouse return ERR_PTR(error); 1672ab9cd1cSSteven Whitehouse 1682ab9cd1cSSteven Whitehouse error = gfs2_check_blk_type(sdp, no_addr, blktype); 1692ab9cd1cSSteven Whitehouse if (error) 1702ab9cd1cSSteven Whitehouse goto fail; 1712ab9cd1cSSteven Whitehouse 17273b462d2SBob Peterson inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, 0); 1732ab9cd1cSSteven Whitehouse if (IS_ERR(inode)) 1742ab9cd1cSSteven Whitehouse goto fail; 1752ab9cd1cSSteven Whitehouse 1762ab9cd1cSSteven Whitehouse /* Two extra checks for NFS only */ 1772ab9cd1cSSteven Whitehouse if (no_formal_ino) { 1782ab9cd1cSSteven Whitehouse error = -ESTALE; 1792ab9cd1cSSteven Whitehouse if (GFS2_I(inode)->i_no_formal_ino != *no_formal_ino) 1802ab9cd1cSSteven Whitehouse goto fail_iput; 1812ab9cd1cSSteven Whitehouse 1822ab9cd1cSSteven Whitehouse error = -EIO; 1832ab9cd1cSSteven Whitehouse if (GFS2_I(inode)->i_diskflags & GFS2_DIF_SYSTEM) 1842ab9cd1cSSteven Whitehouse goto fail_iput; 1852ab9cd1cSSteven Whitehouse 1862ab9cd1cSSteven Whitehouse error = 0; 1872ab9cd1cSSteven Whitehouse } 1882ab9cd1cSSteven Whitehouse 1892ab9cd1cSSteven Whitehouse fail: 1902ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&i_gh); 1912ab9cd1cSSteven Whitehouse return error ? ERR_PTR(error) : inode; 1922ab9cd1cSSteven Whitehouse fail_iput: 1932ab9cd1cSSteven Whitehouse iput(inode); 1942ab9cd1cSSteven Whitehouse goto fail; 1952ab9cd1cSSteven Whitehouse } 1962ab9cd1cSSteven Whitehouse 1972ab9cd1cSSteven Whitehouse 1982ab9cd1cSSteven Whitehouse struct inode *gfs2_lookup_simple(struct inode *dip, const char *name) 1992ab9cd1cSSteven Whitehouse { 2002ab9cd1cSSteven Whitehouse struct qstr qstr; 2012ab9cd1cSSteven Whitehouse struct inode *inode; 2022ab9cd1cSSteven Whitehouse gfs2_str2qstr(&qstr, name); 2032ab9cd1cSSteven Whitehouse inode = gfs2_lookupi(dip, &qstr, 1); 2042ab9cd1cSSteven Whitehouse /* gfs2_lookupi has inconsistent callers: vfs 2052ab9cd1cSSteven Whitehouse * related routines expect NULL for no entry found, 2062ab9cd1cSSteven Whitehouse * gfs2_lookup_simple callers expect ENOENT 2072ab9cd1cSSteven Whitehouse * and do not check for NULL. 2082ab9cd1cSSteven Whitehouse */ 2092ab9cd1cSSteven Whitehouse if (inode == NULL) 2102ab9cd1cSSteven Whitehouse return ERR_PTR(-ENOENT); 2112ab9cd1cSSteven Whitehouse else 2122ab9cd1cSSteven Whitehouse return inode; 2132ab9cd1cSSteven Whitehouse } 2142ab9cd1cSSteven Whitehouse 2152ab9cd1cSSteven Whitehouse 2162ab9cd1cSSteven Whitehouse /** 2172ab9cd1cSSteven Whitehouse * gfs2_lookupi - Look up a filename in a directory and return its inode 2182ab9cd1cSSteven Whitehouse * @d_gh: An initialized holder for the directory glock 2192ab9cd1cSSteven Whitehouse * @name: The name of the inode to look for 2202ab9cd1cSSteven Whitehouse * @is_root: If 1, ignore the caller's permissions 2212ab9cd1cSSteven Whitehouse * @i_gh: An uninitialized holder for the new inode glock 2222ab9cd1cSSteven Whitehouse * 2232ab9cd1cSSteven Whitehouse * This can be called via the VFS filldir function when NFS is doing 2242ab9cd1cSSteven Whitehouse * a readdirplus and the inode which its intending to stat isn't 2252ab9cd1cSSteven Whitehouse * already in cache. In this case we must not take the directory glock 2262ab9cd1cSSteven Whitehouse * again, since the readdir call will have already taken that lock. 2272ab9cd1cSSteven Whitehouse * 2282ab9cd1cSSteven Whitehouse * Returns: errno 2292ab9cd1cSSteven Whitehouse */ 2302ab9cd1cSSteven Whitehouse 2312ab9cd1cSSteven Whitehouse struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name, 2322ab9cd1cSSteven Whitehouse int is_root) 2332ab9cd1cSSteven Whitehouse { 2342ab9cd1cSSteven Whitehouse struct super_block *sb = dir->i_sb; 2352ab9cd1cSSteven Whitehouse struct gfs2_inode *dip = GFS2_I(dir); 2362ab9cd1cSSteven Whitehouse struct gfs2_holder d_gh; 2372ab9cd1cSSteven Whitehouse int error = 0; 2382ab9cd1cSSteven Whitehouse struct inode *inode = NULL; 2392ab9cd1cSSteven Whitehouse int unlock = 0; 2402ab9cd1cSSteven Whitehouse 2412ab9cd1cSSteven Whitehouse if (!name->len || name->len > GFS2_FNAMESIZE) 2422ab9cd1cSSteven Whitehouse return ERR_PTR(-ENAMETOOLONG); 2432ab9cd1cSSteven Whitehouse 2442ab9cd1cSSteven Whitehouse if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) || 2452ab9cd1cSSteven Whitehouse (name->len == 2 && memcmp(name->name, "..", 2) == 0 && 2462b0143b5SDavid Howells dir == d_inode(sb->s_root))) { 2472ab9cd1cSSteven Whitehouse igrab(dir); 2482ab9cd1cSSteven Whitehouse return dir; 2492ab9cd1cSSteven Whitehouse } 2502ab9cd1cSSteven Whitehouse 2512ab9cd1cSSteven Whitehouse if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) { 2522ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh); 2532ab9cd1cSSteven Whitehouse if (error) 2542ab9cd1cSSteven Whitehouse return ERR_PTR(error); 2552ab9cd1cSSteven Whitehouse unlock = 1; 2562ab9cd1cSSteven Whitehouse } 2572ab9cd1cSSteven Whitehouse 2582ab9cd1cSSteven Whitehouse if (!is_root) { 25910556cb2SAl Viro error = gfs2_permission(dir, MAY_EXEC); 2602ab9cd1cSSteven Whitehouse if (error) 2612ab9cd1cSSteven Whitehouse goto out; 2622ab9cd1cSSteven Whitehouse } 2632ab9cd1cSSteven Whitehouse 2645a00f3ccSSteven Whitehouse inode = gfs2_dir_search(dir, name, false); 2652ab9cd1cSSteven Whitehouse if (IS_ERR(inode)) 2662ab9cd1cSSteven Whitehouse error = PTR_ERR(inode); 2672ab9cd1cSSteven Whitehouse out: 2682ab9cd1cSSteven Whitehouse if (unlock) 2692ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&d_gh); 2702ab9cd1cSSteven Whitehouse if (error == -ENOENT) 2712ab9cd1cSSteven Whitehouse return NULL; 2722ab9cd1cSSteven Whitehouse return inode ? inode : ERR_PTR(error); 2732ab9cd1cSSteven Whitehouse } 2742ab9cd1cSSteven Whitehouse 2752ab9cd1cSSteven Whitehouse /** 2762ab9cd1cSSteven Whitehouse * create_ok - OK to create a new on-disk inode here? 2772ab9cd1cSSteven Whitehouse * @dip: Directory in which dinode is to be created 2782ab9cd1cSSteven Whitehouse * @name: Name of new dinode 2792ab9cd1cSSteven Whitehouse * @mode: 2802ab9cd1cSSteven Whitehouse * 2812ab9cd1cSSteven Whitehouse * Returns: errno 2822ab9cd1cSSteven Whitehouse */ 2832ab9cd1cSSteven Whitehouse 2842ab9cd1cSSteven Whitehouse static int create_ok(struct gfs2_inode *dip, const struct qstr *name, 285175a4eb7SAl Viro umode_t mode) 2862ab9cd1cSSteven Whitehouse { 2872ab9cd1cSSteven Whitehouse int error; 2882ab9cd1cSSteven Whitehouse 28910556cb2SAl Viro error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC); 2902ab9cd1cSSteven Whitehouse if (error) 2912ab9cd1cSSteven Whitehouse return error; 2922ab9cd1cSSteven Whitehouse 2932ab9cd1cSSteven Whitehouse /* Don't create entries in an unlinked directory */ 2942ab9cd1cSSteven Whitehouse if (!dip->i_inode.i_nlink) 2952ab9cd1cSSteven Whitehouse return -ENOENT; 2962ab9cd1cSSteven Whitehouse 2972ab9cd1cSSteven Whitehouse if (dip->i_entries == (u32)-1) 2982ab9cd1cSSteven Whitehouse return -EFBIG; 2992ab9cd1cSSteven Whitehouse if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1) 3002ab9cd1cSSteven Whitehouse return -EMLINK; 3012ab9cd1cSSteven Whitehouse 3022ab9cd1cSSteven Whitehouse return 0; 3032ab9cd1cSSteven Whitehouse } 3042ab9cd1cSSteven Whitehouse 305c9aecf73SSteven Whitehouse static void munge_mode_uid_gid(const struct gfs2_inode *dip, 306c9aecf73SSteven Whitehouse struct inode *inode) 3072ab9cd1cSSteven Whitehouse { 3082ab9cd1cSSteven Whitehouse if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir && 3096b24c0d2SEric W. Biederman (dip->i_inode.i_mode & S_ISUID) && 3106b24c0d2SEric W. Biederman !uid_eq(dip->i_inode.i_uid, GLOBAL_ROOT_UID)) { 311c9aecf73SSteven Whitehouse if (S_ISDIR(inode->i_mode)) 312c9aecf73SSteven Whitehouse inode->i_mode |= S_ISUID; 3136b24c0d2SEric W. Biederman else if (!uid_eq(dip->i_inode.i_uid, current_fsuid())) 314c9aecf73SSteven Whitehouse inode->i_mode &= ~07111; 315c9aecf73SSteven Whitehouse inode->i_uid = dip->i_inode.i_uid; 3162ab9cd1cSSteven Whitehouse } else 317c9aecf73SSteven Whitehouse inode->i_uid = current_fsuid(); 3182ab9cd1cSSteven Whitehouse 3192ab9cd1cSSteven Whitehouse if (dip->i_inode.i_mode & S_ISGID) { 320c9aecf73SSteven Whitehouse if (S_ISDIR(inode->i_mode)) 321c9aecf73SSteven Whitehouse inode->i_mode |= S_ISGID; 322c9aecf73SSteven Whitehouse inode->i_gid = dip->i_inode.i_gid; 3232ab9cd1cSSteven Whitehouse } else 324c9aecf73SSteven Whitehouse inode->i_gid = current_fsgid(); 3252ab9cd1cSSteven Whitehouse } 3262ab9cd1cSSteven Whitehouse 327b2c8b3eaSSteven Whitehouse static int alloc_dinode(struct gfs2_inode *ip, u32 flags, unsigned *dblocks) 3282ab9cd1cSSteven Whitehouse { 329c9aecf73SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 330b2c8b3eaSSteven Whitehouse struct gfs2_alloc_parms ap = { .target = *dblocks, .aflags = flags, }; 3312ab9cd1cSSteven Whitehouse int error; 3322ab9cd1cSSteven Whitehouse 333b8fbf471SAbhi Das error = gfs2_quota_lock_check(ip, &ap); 3342ab9cd1cSSteven Whitehouse if (error) 3352ab9cd1cSSteven Whitehouse goto out; 3362ab9cd1cSSteven Whitehouse 3377b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(ip, &ap); 338fd4b4e04SSteven Whitehouse if (error) 339fd4b4e04SSteven Whitehouse goto out_quota; 340fd4b4e04SSteven Whitehouse 341b2c8b3eaSSteven Whitehouse error = gfs2_trans_begin(sdp, (*dblocks * RES_RG_BIT) + RES_STATFS + RES_QUOTA, 0); 3422ab9cd1cSSteven Whitehouse if (error) 3432ab9cd1cSSteven Whitehouse goto out_ipreserv; 3442ab9cd1cSSteven Whitehouse 345b2c8b3eaSSteven Whitehouse error = gfs2_alloc_blocks(ip, &ip->i_no_addr, dblocks, 1, &ip->i_generation); 346c9aecf73SSteven Whitehouse ip->i_no_formal_ino = ip->i_generation; 347c9aecf73SSteven Whitehouse ip->i_inode.i_ino = ip->i_no_addr; 348c9aecf73SSteven Whitehouse ip->i_goal = ip->i_no_addr; 3492ab9cd1cSSteven Whitehouse 3502ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 3512ab9cd1cSSteven Whitehouse 3522ab9cd1cSSteven Whitehouse out_ipreserv: 353c9aecf73SSteven Whitehouse gfs2_inplace_release(ip); 354fd4b4e04SSteven Whitehouse out_quota: 355fd4b4e04SSteven Whitehouse gfs2_quota_unlock(ip); 3562ab9cd1cSSteven Whitehouse out: 3572ab9cd1cSSteven Whitehouse return error; 3582ab9cd1cSSteven Whitehouse } 3592ab9cd1cSSteven Whitehouse 360f2741d98SSteven Whitehouse static void gfs2_init_dir(struct buffer_head *dibh, 361f2741d98SSteven Whitehouse const struct gfs2_inode *parent) 362e2d0a13bSSteven Whitehouse { 363e2d0a13bSSteven Whitehouse struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data; 364e2d0a13bSSteven Whitehouse struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1); 365e2d0a13bSSteven Whitehouse 366e2d0a13bSSteven Whitehouse gfs2_qstr2dirent(&gfs2_qdot, GFS2_DIRENT_SIZE(gfs2_qdot.len), dent); 367e2d0a13bSSteven Whitehouse dent->de_inum = di->di_num; /* already GFS2 endian */ 368e2d0a13bSSteven Whitehouse dent->de_type = cpu_to_be16(DT_DIR); 369e2d0a13bSSteven Whitehouse 370e2d0a13bSSteven Whitehouse dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1)); 371e2d0a13bSSteven Whitehouse gfs2_qstr2dirent(&gfs2_qdotdot, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent); 372e2d0a13bSSteven Whitehouse gfs2_inum_out(parent, dent); 373e2d0a13bSSteven Whitehouse dent->de_type = cpu_to_be16(DT_DIR); 374e2d0a13bSSteven Whitehouse 375e2d0a13bSSteven Whitehouse } 376e2d0a13bSSteven Whitehouse 3772ab9cd1cSSteven Whitehouse /** 378b2c8b3eaSSteven Whitehouse * gfs2_init_xattr - Initialise an xattr block for a new inode 379b2c8b3eaSSteven Whitehouse * @ip: The inode in question 380b2c8b3eaSSteven Whitehouse * 381b2c8b3eaSSteven Whitehouse * This sets up an empty xattr block for a new inode, ready to 382b2c8b3eaSSteven Whitehouse * take any ACLs, LSM xattrs, etc. 383b2c8b3eaSSteven Whitehouse */ 384b2c8b3eaSSteven Whitehouse 385b2c8b3eaSSteven Whitehouse static void gfs2_init_xattr(struct gfs2_inode *ip) 386b2c8b3eaSSteven Whitehouse { 387b2c8b3eaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 388b2c8b3eaSSteven Whitehouse struct buffer_head *bh; 389b2c8b3eaSSteven Whitehouse struct gfs2_ea_header *ea; 390b2c8b3eaSSteven Whitehouse 391b2c8b3eaSSteven Whitehouse bh = gfs2_meta_new(ip->i_gl, ip->i_eattr); 392b2c8b3eaSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, bh); 393b2c8b3eaSSteven Whitehouse gfs2_metatype_set(bh, GFS2_METATYPE_EA, GFS2_FORMAT_EA); 394b2c8b3eaSSteven Whitehouse gfs2_buffer_clear_tail(bh, sizeof(struct gfs2_meta_header)); 395b2c8b3eaSSteven Whitehouse 396b2c8b3eaSSteven Whitehouse ea = GFS2_EA_BH2FIRST(bh); 397b2c8b3eaSSteven Whitehouse ea->ea_rec_len = cpu_to_be32(sdp->sd_jbsize); 398b2c8b3eaSSteven Whitehouse ea->ea_type = GFS2_EATYPE_UNUSED; 399b2c8b3eaSSteven Whitehouse ea->ea_flags = GFS2_EAFLAG_LAST; 400b2c8b3eaSSteven Whitehouse 401b2c8b3eaSSteven Whitehouse brelse(bh); 402b2c8b3eaSSteven Whitehouse } 403b2c8b3eaSSteven Whitehouse 404b2c8b3eaSSteven Whitehouse /** 4052ab9cd1cSSteven Whitehouse * init_dinode - Fill in a new dinode structure 406f2741d98SSteven Whitehouse * @dip: The directory this inode is being created in 407c9aecf73SSteven Whitehouse * @ip: The inode 408f2741d98SSteven Whitehouse * @symname: The symlink destination (if a symlink) 409f2741d98SSteven Whitehouse * @bhp: The buffer head (returned to caller) 4102ab9cd1cSSteven Whitehouse * 4112ab9cd1cSSteven Whitehouse */ 4122ab9cd1cSSteven Whitehouse 413c9aecf73SSteven Whitehouse static void init_dinode(struct gfs2_inode *dip, struct gfs2_inode *ip, 41479ba7480SSteven Whitehouse const char *symname) 4152ab9cd1cSSteven Whitehouse { 4162ab9cd1cSSteven Whitehouse struct gfs2_dinode *di; 4172ab9cd1cSSteven Whitehouse struct buffer_head *dibh; 4182ab9cd1cSSteven Whitehouse 419c9aecf73SSteven Whitehouse dibh = gfs2_meta_new(ip->i_gl, ip->i_no_addr); 420350a9b0aSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, dibh); 4212ab9cd1cSSteven Whitehouse di = (struct gfs2_dinode *)dibh->b_data; 42279ba7480SSteven Whitehouse gfs2_dinode_out(ip, di); 4232ab9cd1cSSteven Whitehouse 424c9aecf73SSteven Whitehouse di->di_major = cpu_to_be32(MAJOR(ip->i_inode.i_rdev)); 425c9aecf73SSteven Whitehouse di->di_minor = cpu_to_be32(MINOR(ip->i_inode.i_rdev)); 4262ab9cd1cSSteven Whitehouse di->__pad1 = 0; 4272ab9cd1cSSteven Whitehouse di->__pad2 = 0; 4282ab9cd1cSSteven Whitehouse di->__pad3 = 0; 4292ab9cd1cSSteven Whitehouse memset(&di->__pad4, 0, sizeof(di->__pad4)); 4302ab9cd1cSSteven Whitehouse memset(&di->di_reserved, 0, sizeof(di->di_reserved)); 43179ba7480SSteven Whitehouse gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode)); 4322ab9cd1cSSteven Whitehouse 433c9aecf73SSteven Whitehouse switch(ip->i_inode.i_mode & S_IFMT) { 434160b4026SSteven Whitehouse case S_IFDIR: 435e2d0a13bSSteven Whitehouse gfs2_init_dir(dibh, dip); 436160b4026SSteven Whitehouse break; 437160b4026SSteven Whitehouse case S_IFLNK: 438c9aecf73SSteven Whitehouse memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname, ip->i_inode.i_size); 439160b4026SSteven Whitehouse break; 440e2d0a13bSSteven Whitehouse } 441e2d0a13bSSteven Whitehouse 4422ab9cd1cSSteven Whitehouse set_buffer_uptodate(dibh); 44379ba7480SSteven Whitehouse brelse(dibh); 4442ab9cd1cSSteven Whitehouse } 4452ab9cd1cSSteven Whitehouse 446534cf9caSSteven Whitehouse /** 447534cf9caSSteven Whitehouse * gfs2_trans_da_blocks - Calculate number of blocks to link inode 448534cf9caSSteven Whitehouse * @dip: The directory we are linking into 449534cf9caSSteven Whitehouse * @da: The dir add information 450534cf9caSSteven Whitehouse * @nr_inodes: The number of inodes involved 451534cf9caSSteven Whitehouse * 452534cf9caSSteven Whitehouse * This calculate the number of blocks we need to reserve in a 453534cf9caSSteven Whitehouse * transaction to link @nr_inodes into a directory. In most cases 454534cf9caSSteven Whitehouse * @nr_inodes will be 2 (the directory plus the inode being linked in) 455534cf9caSSteven Whitehouse * but in case of rename, 4 may be required. 456534cf9caSSteven Whitehouse * 457534cf9caSSteven Whitehouse * Returns: Number of blocks 458534cf9caSSteven Whitehouse */ 459534cf9caSSteven Whitehouse 460534cf9caSSteven Whitehouse static unsigned gfs2_trans_da_blks(const struct gfs2_inode *dip, 461534cf9caSSteven Whitehouse const struct gfs2_diradd *da, 462534cf9caSSteven Whitehouse unsigned nr_inodes) 463534cf9caSSteven Whitehouse { 464534cf9caSSteven Whitehouse return da->nr_blocks + gfs2_rg_blocks(dip, da->nr_blocks) + 465534cf9caSSteven Whitehouse (nr_inodes * RES_DINODE) + RES_QUOTA + RES_STATFS; 466534cf9caSSteven Whitehouse } 467534cf9caSSteven Whitehouse 4682ab9cd1cSSteven Whitehouse static int link_dinode(struct gfs2_inode *dip, const struct qstr *name, 4693c1c0ae1SSteven Whitehouse struct gfs2_inode *ip, struct gfs2_diradd *da) 4702ab9cd1cSSteven Whitehouse { 4712ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); 4723c1c0ae1SSteven Whitehouse struct gfs2_alloc_parms ap = { .target = da->nr_blocks, }; 4732ab9cd1cSSteven Whitehouse int error; 4742ab9cd1cSSteven Whitehouse 4753c1c0ae1SSteven Whitehouse if (da->nr_blocks) { 476b8fbf471SAbhi Das error = gfs2_quota_lock_check(dip, &ap); 4772ab9cd1cSSteven Whitehouse if (error) 4782ab9cd1cSSteven Whitehouse goto fail_quota_locks; 4792ab9cd1cSSteven Whitehouse 4807b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(dip, &ap); 4812ab9cd1cSSteven Whitehouse if (error) 4822ab9cd1cSSteven Whitehouse goto fail_quota_locks; 4832ab9cd1cSSteven Whitehouse 484534cf9caSSteven Whitehouse error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(dip, da, 2), 0); 4852ab9cd1cSSteven Whitehouse if (error) 4862ab9cd1cSSteven Whitehouse goto fail_ipreserv; 4872ab9cd1cSSteven Whitehouse } else { 4882ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0); 4892ab9cd1cSSteven Whitehouse if (error) 4902ab9cd1cSSteven Whitehouse goto fail_quota_locks; 4912ab9cd1cSSteven Whitehouse } 4922ab9cd1cSSteven Whitehouse 4932b47dad8SSteven Whitehouse error = gfs2_dir_add(&dip->i_inode, name, ip, da); 4942ab9cd1cSSteven Whitehouse 4952ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 4962ab9cd1cSSteven Whitehouse fail_ipreserv: 4972ab9cd1cSSteven Whitehouse gfs2_inplace_release(dip); 4982ab9cd1cSSteven Whitehouse fail_quota_locks: 4992ab9cd1cSSteven Whitehouse gfs2_quota_unlock(dip); 5002ab9cd1cSSteven Whitehouse return error; 5012ab9cd1cSSteven Whitehouse } 5022ab9cd1cSSteven Whitehouse 50346cc1e5fSH Hartley Sweeten static int gfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array, 5049d8f13baSMimi Zohar void *fs_info) 5052ab9cd1cSSteven Whitehouse { 5069d8f13baSMimi Zohar const struct xattr *xattr; 5079d8f13baSMimi Zohar int err = 0; 5082ab9cd1cSSteven Whitehouse 5099d8f13baSMimi Zohar for (xattr = xattr_array; xattr->name != NULL; xattr++) { 5109d8f13baSMimi Zohar err = __gfs2_xattr_set(inode, xattr->name, xattr->value, 5119d8f13baSMimi Zohar xattr->value_len, 0, 5129d8f13baSMimi Zohar GFS2_EATYPE_SECURITY); 5139d8f13baSMimi Zohar if (err < 0) 5149d8f13baSMimi Zohar break; 5159d8f13baSMimi Zohar } 5162ab9cd1cSSteven Whitehouse return err; 5172ab9cd1cSSteven Whitehouse } 5182ab9cd1cSSteven Whitehouse 5192ab9cd1cSSteven Whitehouse /** 520f2741d98SSteven Whitehouse * gfs2_create_inode - Create a new inode 521f2741d98SSteven Whitehouse * @dir: The parent directory 522f2741d98SSteven Whitehouse * @dentry: The new dentry 5236d4ade98SSteven Whitehouse * @file: If non-NULL, the file which is being opened 524f2741d98SSteven Whitehouse * @mode: The permissions on the new inode 525f2741d98SSteven Whitehouse * @dev: For device nodes, this is the device number 526f2741d98SSteven Whitehouse * @symname: For symlinks, this is the link destination 527f2741d98SSteven Whitehouse * @size: The initial size of the inode (ignored for directories) 5282ab9cd1cSSteven Whitehouse * 529f2741d98SSteven Whitehouse * Returns: 0 on success, or error code 5302ab9cd1cSSteven Whitehouse */ 5312ab9cd1cSSteven Whitehouse 532f2741d98SSteven Whitehouse static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, 5336d4ade98SSteven Whitehouse struct file *file, 534175a4eb7SAl Viro umode_t mode, dev_t dev, const char *symname, 5356d4ade98SSteven Whitehouse unsigned int size, int excl, int *opened) 5362ab9cd1cSSteven Whitehouse { 537f2741d98SSteven Whitehouse const struct qstr *name = &dentry->d_name; 538e01580bfSChristoph Hellwig struct posix_acl *default_acl, *acl; 539f2741d98SSteven Whitehouse struct gfs2_holder ghs[2]; 5402ab9cd1cSSteven Whitehouse struct inode *inode = NULL; 5418e2e0047SBob Peterson struct gfs2_inode *dip = GFS2_I(dir), *ip; 5422ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); 543a4923865SBob Peterson struct gfs2_glock *io_gl = NULL; 544783013c0SBob Peterson int error, free_vfs_inode = 1; 5459dbe9610SSteven Whitehouse u32 aflags = 0; 546b2c8b3eaSSteven Whitehouse unsigned blocks = 1; 54719aeb5a6SBob Peterson struct gfs2_diradd da = { .bh = NULL, .save_loc = 1, }; 5482ab9cd1cSSteven Whitehouse 5492ab9cd1cSSteven Whitehouse if (!name->len || name->len > GFS2_FNAMESIZE) 550f2741d98SSteven Whitehouse return -ENAMETOOLONG; 5512ab9cd1cSSteven Whitehouse 552b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(dip); 5530a305e49SBob Peterson if (error) 5540a305e49SBob Peterson return error; 5550a305e49SBob Peterson 556fd4b4e04SSteven Whitehouse error = gfs2_rindex_update(sdp); 557fd4b4e04SSteven Whitehouse if (error) 558fd4b4e04SSteven Whitehouse return error; 559fd4b4e04SSteven Whitehouse 560f2741d98SSteven Whitehouse error = gfs2_glock_nq_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 5612ab9cd1cSSteven Whitehouse if (error) 5622ab9cd1cSSteven Whitehouse goto fail; 5632ab9cd1cSSteven Whitehouse 5642ab9cd1cSSteven Whitehouse error = create_ok(dip, name, mode); 5652ab9cd1cSSteven Whitehouse if (error) 5662ab9cd1cSSteven Whitehouse goto fail_gunlock; 5672ab9cd1cSSteven Whitehouse 5685a00f3ccSSteven Whitehouse inode = gfs2_dir_search(dir, &dentry->d_name, !S_ISREG(mode) || excl); 5695a00f3ccSSteven Whitehouse error = PTR_ERR(inode); 5705a00f3ccSSteven Whitehouse if (!IS_ERR(inode)) { 571571a4b57SAl Viro if (S_ISDIR(inode->i_mode)) { 572571a4b57SAl Viro iput(inode); 573571a4b57SAl Viro inode = ERR_PTR(-EISDIR); 574571a4b57SAl Viro goto fail_gunlock; 575571a4b57SAl Viro } 57644bb31baSAl Viro d_instantiate(dentry, inode); 5776d4ade98SSteven Whitehouse error = 0; 5780d0d1107SMiklos Szeredi if (file) { 57944bb31baSAl Viro if (S_ISREG(inode->i_mode)) 5805ca1db41SMiklos Szeredi error = finish_open(file, dentry, gfs2_open_common, opened); 58144bb31baSAl Viro else 58244bb31baSAl Viro error = finish_no_open(file, NULL); 5835ca1db41SMiklos Szeredi } 5845a00f3ccSSteven Whitehouse gfs2_glock_dq_uninit(ghs); 5856d4ade98SSteven Whitehouse return error; 5865a00f3ccSSteven Whitehouse } else if (error != -ENOENT) { 5875a00f3ccSSteven Whitehouse goto fail_gunlock; 5885a00f3ccSSteven Whitehouse } 5895a00f3ccSSteven Whitehouse 5903c1c0ae1SSteven Whitehouse error = gfs2_diradd_alloc_required(dir, name, &da); 591fd4b4e04SSteven Whitehouse if (error < 0) 592fd4b4e04SSteven Whitehouse goto fail_gunlock; 593fd4b4e04SSteven Whitehouse 594c9aecf73SSteven Whitehouse inode = new_inode(sdp->sd_vfs); 595fd4b4e04SSteven Whitehouse error = -ENOMEM; 596fd4b4e04SSteven Whitehouse if (!inode) 597fd4b4e04SSteven Whitehouse goto fail_gunlock; 598fd4b4e04SSteven Whitehouse 599e01580bfSChristoph Hellwig error = posix_acl_create(dir, &mode, &default_acl, &acl); 600e01580bfSChristoph Hellwig if (error) 601783013c0SBob Peterson goto fail_gunlock; 602e01580bfSChristoph Hellwig 6038e2e0047SBob Peterson ip = GFS2_I(inode); 604b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ip); 605ff7f4cb4SSteven Whitehouse if (error) 606e01580bfSChristoph Hellwig goto fail_free_acls; 607c9aecf73SSteven Whitehouse 608c9aecf73SSteven Whitehouse inode->i_mode = mode; 60979ba7480SSteven Whitehouse set_nlink(inode, S_ISDIR(mode) ? 2 : 1); 610c9aecf73SSteven Whitehouse inode->i_rdev = dev; 611c9aecf73SSteven Whitehouse inode->i_size = size; 612fd4b4e04SSteven Whitehouse inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; 61328fb3027SSteven Whitehouse gfs2_set_inode_blocks(inode, 1); 614c9aecf73SSteven Whitehouse munge_mode_uid_gid(dip, inode); 61500a158beSAbhi Das check_and_update_goal(dip); 616c9aecf73SSteven Whitehouse ip->i_goal = dip->i_goal; 61728fb3027SSteven Whitehouse ip->i_diskflags = 0; 61828fb3027SSteven Whitehouse ip->i_eattr = 0; 61928fb3027SSteven Whitehouse ip->i_height = 0; 62028fb3027SSteven Whitehouse ip->i_depth = 0; 62128fb3027SSteven Whitehouse ip->i_entries = 0; 62228fb3027SSteven Whitehouse 62328fb3027SSteven Whitehouse switch(mode & S_IFMT) { 62428fb3027SSteven Whitehouse case S_IFREG: 62528fb3027SSteven Whitehouse if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) || 62628fb3027SSteven Whitehouse gfs2_tune_get(sdp, gt_new_files_jdata)) 62728fb3027SSteven Whitehouse ip->i_diskflags |= GFS2_DIF_JDATA; 62828fb3027SSteven Whitehouse gfs2_set_aops(inode); 62928fb3027SSteven Whitehouse break; 63028fb3027SSteven Whitehouse case S_IFDIR: 63128fb3027SSteven Whitehouse ip->i_diskflags |= (dip->i_diskflags & GFS2_DIF_INHERIT_JDATA); 63228fb3027SSteven Whitehouse ip->i_diskflags |= GFS2_DIF_JDATA; 63328fb3027SSteven Whitehouse ip->i_entries = 2; 63428fb3027SSteven Whitehouse break; 63528fb3027SSteven Whitehouse } 636acc546fdSAbhi Das 637acc546fdSAbhi Das /* Force SYSTEM flag on all files and subdirs of a SYSTEM directory */ 638acc546fdSAbhi Das if (dip->i_diskflags & GFS2_DIF_SYSTEM) 639acc546fdSAbhi Das ip->i_diskflags |= GFS2_DIF_SYSTEM; 640acc546fdSAbhi Das 64128fb3027SSteven Whitehouse gfs2_set_inode_flags(inode); 642c9aecf73SSteven Whitehouse 6432b0143b5SDavid Howells if ((GFS2_I(d_inode(sdp->sd_root_dir)) == dip) || 6449dbe9610SSteven Whitehouse (dip->i_diskflags & GFS2_DIF_TOPDIR)) 6459dbe9610SSteven Whitehouse aflags |= GFS2_AF_ORLOV; 6469dbe9610SSteven Whitehouse 647b2c8b3eaSSteven Whitehouse if (default_acl || acl) 648b2c8b3eaSSteven Whitehouse blocks++; 649b2c8b3eaSSteven Whitehouse 650b2c8b3eaSSteven Whitehouse error = alloc_dinode(ip, aflags, &blocks); 651c9aecf73SSteven Whitehouse if (error) 652c9aecf73SSteven Whitehouse goto fail_free_inode; 653c9aecf73SSteven Whitehouse 654b2c8b3eaSSteven Whitehouse gfs2_set_inode_blocks(inode, blocks); 655b2c8b3eaSSteven Whitehouse 656c9aecf73SSteven Whitehouse error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); 657c9aecf73SSteven Whitehouse if (error) 658c9aecf73SSteven Whitehouse goto fail_free_inode; 659c9aecf73SSteven Whitehouse 6601e2d9d44SBob Peterson ip->i_gl->gl_object = ip; 661c9aecf73SSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1); 662c9aecf73SSteven Whitehouse if (error) 663c9aecf73SSteven Whitehouse goto fail_free_inode; 664c9aecf73SSteven Whitehouse 665b2c8b3eaSSteven Whitehouse error = gfs2_trans_begin(sdp, blocks, 0); 666c9aecf73SSteven Whitehouse if (error) 667ff7f4cb4SSteven Whitehouse goto fail_gunlock2; 6680a305e49SBob Peterson 669b2c8b3eaSSteven Whitehouse if (blocks > 1) { 670b2c8b3eaSSteven Whitehouse ip->i_eattr = ip->i_no_addr + 1; 671b2c8b3eaSSteven Whitehouse gfs2_init_xattr(ip); 672b2c8b3eaSSteven Whitehouse } 67379ba7480SSteven Whitehouse init_dinode(dip, ip, symname); 674fd4b4e04SSteven Whitehouse gfs2_trans_end(sdp); 675fd4b4e04SSteven Whitehouse 676c9aecf73SSteven Whitehouse error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_iopen_glops, CREATE, &io_gl); 677c9aecf73SSteven Whitehouse if (error) 678c9aecf73SSteven Whitehouse goto fail_gunlock2; 679c9aecf73SSteven Whitehouse 680a4923865SBob Peterson BUG_ON(test_and_set_bit(GLF_INODE_CREATING, &io_gl->gl_flags)); 681a4923865SBob Peterson 682c9aecf73SSteven Whitehouse error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); 683c9aecf73SSteven Whitehouse if (error) 684c9aecf73SSteven Whitehouse goto fail_gunlock2; 685c9aecf73SSteven Whitehouse 686c9aecf73SSteven Whitehouse ip->i_iopen_gh.gh_gl->gl_object = ip; 687c9aecf73SSteven Whitehouse gfs2_glock_put(io_gl); 688c9aecf73SSteven Whitehouse gfs2_set_iop(inode); 689c9aecf73SSteven Whitehouse insert_inode_hash(inode); 690c9aecf73SSteven Whitehouse 691783013c0SBob Peterson free_vfs_inode = 0; /* After this point, the inode is no longer 692783013c0SBob Peterson considered free. Any failures need to undo 693783013c0SBob Peterson the gfs2 structures. */ 694e01580bfSChristoph Hellwig if (default_acl) { 695e01580bfSChristoph Hellwig error = gfs2_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); 696e01580bfSChristoph Hellwig posix_acl_release(default_acl); 697e01580bfSChristoph Hellwig } 698e01580bfSChristoph Hellwig if (acl) { 699e01580bfSChristoph Hellwig if (!error) 700e01580bfSChristoph Hellwig error = gfs2_set_acl(inode, acl, ACL_TYPE_ACCESS); 701e01580bfSChristoph Hellwig posix_acl_release(acl); 702e01580bfSChristoph Hellwig } 703e01580bfSChristoph Hellwig 7042ab9cd1cSSteven Whitehouse if (error) 705c9aecf73SSteven Whitehouse goto fail_gunlock3; 7062ab9cd1cSSteven Whitehouse 707f45dc26dSBob Peterson error = security_inode_init_security(&ip->i_inode, &dip->i_inode, name, 708f45dc26dSBob Peterson &gfs2_initxattrs, NULL); 7092ab9cd1cSSteven Whitehouse if (error) 710c9aecf73SSteven Whitehouse goto fail_gunlock3; 7112ab9cd1cSSteven Whitehouse 7123c1c0ae1SSteven Whitehouse error = link_dinode(dip, name, ip, &da); 7132ab9cd1cSSteven Whitehouse if (error) 714c9aecf73SSteven Whitehouse goto fail_gunlock3; 7152ab9cd1cSSteven Whitehouse 71679ba7480SSteven Whitehouse mark_inode_dirty(inode); 7176d4ade98SSteven Whitehouse d_instantiate(dentry, inode); 718c5bf8fefSMiklos Szeredi if (file) { 719c5bf8fefSMiklos Szeredi *opened |= FILE_CREATED; 7206d4ade98SSteven Whitehouse error = finish_open(file, dentry, gfs2_open_common, opened); 721c5bf8fefSMiklos Szeredi } 72228fb3027SSteven Whitehouse gfs2_glock_dq_uninit(ghs); 72328fb3027SSteven Whitehouse gfs2_glock_dq_uninit(ghs + 1); 724a4923865SBob Peterson clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags); 7256d4ade98SSteven Whitehouse return error; 7262ab9cd1cSSteven Whitehouse 727c9aecf73SSteven Whitehouse fail_gunlock3: 728783013c0SBob Peterson gfs2_glock_dq_uninit(&ip->i_iopen_gh); 729783013c0SBob Peterson gfs2_glock_put(io_gl); 7302ab9cd1cSSteven Whitehouse fail_gunlock2: 731a4923865SBob Peterson if (io_gl) 732a4923865SBob Peterson clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags); 7332ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(ghs + 1); 734c9aecf73SSteven Whitehouse fail_free_inode: 735c9aecf73SSteven Whitehouse if (ip->i_gl) 736c9aecf73SSteven Whitehouse gfs2_glock_put(ip->i_gl); 737b54e9a0bSBob Peterson gfs2_rsqa_delete(ip, NULL); 738e01580bfSChristoph Hellwig fail_free_acls: 739e01580bfSChristoph Hellwig if (default_acl) 740e01580bfSChristoph Hellwig posix_acl_release(default_acl); 741e01580bfSChristoph Hellwig if (acl) 742e01580bfSChristoph Hellwig posix_acl_release(acl); 7432ab9cd1cSSteven Whitehouse fail_gunlock: 7442b47dad8SSteven Whitehouse gfs2_dir_no_add(&da); 745f2741d98SSteven Whitehouse gfs2_glock_dq_uninit(ghs); 74640ac218fSSteven Whitehouse if (inode && !IS_ERR(inode)) { 74779ba7480SSteven Whitehouse clear_nlink(inode); 74805978803SAbhi Das if (!free_vfs_inode) 74979ba7480SSteven Whitehouse mark_inode_dirty(inode); 75005978803SAbhi Das set_bit(free_vfs_inode ? GIF_FREE_VFS_INODE : GIF_ALLOC_FAILED, 75105978803SAbhi Das &GFS2_I(inode)->i_flags); 75240ac218fSSteven Whitehouse iput(inode); 75340ac218fSSteven Whitehouse } 7542ab9cd1cSSteven Whitehouse fail: 755f2741d98SSteven Whitehouse return error; 7562ab9cd1cSSteven Whitehouse } 757f2741d98SSteven Whitehouse 7582ab9cd1cSSteven Whitehouse /** 7592ab9cd1cSSteven Whitehouse * gfs2_create - Create a file 7602ab9cd1cSSteven Whitehouse * @dir: The directory in which to create the file 7612ab9cd1cSSteven Whitehouse * @dentry: The dentry of the new file 7622ab9cd1cSSteven Whitehouse * @mode: The mode of the new file 7632ab9cd1cSSteven Whitehouse * 7642ab9cd1cSSteven Whitehouse * Returns: errno 7652ab9cd1cSSteven Whitehouse */ 7662ab9cd1cSSteven Whitehouse 7672ab9cd1cSSteven Whitehouse static int gfs2_create(struct inode *dir, struct dentry *dentry, 768ebfc3b49SAl Viro umode_t mode, bool excl) 7692ab9cd1cSSteven Whitehouse { 7706d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, NULL, S_IFREG | mode, 0, NULL, 0, excl, NULL); 7712ab9cd1cSSteven Whitehouse } 7722ab9cd1cSSteven Whitehouse 7732ab9cd1cSSteven Whitehouse /** 7746d4ade98SSteven Whitehouse * __gfs2_lookup - Look up a filename in a directory and return its inode 7752ab9cd1cSSteven Whitehouse * @dir: The directory inode 7762ab9cd1cSSteven Whitehouse * @dentry: The dentry of the new inode 7776d4ade98SSteven Whitehouse * @file: File to be opened 7786d4ade98SSteven Whitehouse * @opened: atomic_open flags 7792ab9cd1cSSteven Whitehouse * 7802ab9cd1cSSteven Whitehouse * 7812ab9cd1cSSteven Whitehouse * Returns: errno 7822ab9cd1cSSteven Whitehouse */ 7832ab9cd1cSSteven Whitehouse 7846d4ade98SSteven Whitehouse static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry, 7856d4ade98SSteven Whitehouse struct file *file, int *opened) 7862ab9cd1cSSteven Whitehouse { 7876d4ade98SSteven Whitehouse struct inode *inode; 7886d4ade98SSteven Whitehouse struct dentry *d; 7892ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 7906d4ade98SSteven Whitehouse struct gfs2_glock *gl; 7912ab9cd1cSSteven Whitehouse int error; 7926d4ade98SSteven Whitehouse 7936d4ade98SSteven Whitehouse inode = gfs2_lookupi(dir, &dentry->d_name, 0); 7947b7a9115SBenjamin Coddington if (inode == NULL) { 7957b7a9115SBenjamin Coddington d_add(dentry, NULL); 7966d4ade98SSteven Whitehouse return NULL; 7977b7a9115SBenjamin Coddington } 7986d4ade98SSteven Whitehouse if (IS_ERR(inode)) 7996d4ade98SSteven Whitehouse return ERR_CAST(inode); 8006d4ade98SSteven Whitehouse 8016d4ade98SSteven Whitehouse gl = GFS2_I(inode)->i_gl; 8022ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); 8032ab9cd1cSSteven Whitehouse if (error) { 8042ab9cd1cSSteven Whitehouse iput(inode); 8052ab9cd1cSSteven Whitehouse return ERR_PTR(error); 8062ab9cd1cSSteven Whitehouse } 8076d4ade98SSteven Whitehouse 8086d4ade98SSteven Whitehouse d = d_splice_alias(inode, dentry); 809d57b9c9aSJ. Bruce Fields if (IS_ERR(d)) { 810d57b9c9aSJ. Bruce Fields gfs2_glock_dq_uninit(&gh); 811d57b9c9aSJ. Bruce Fields return d; 812d57b9c9aSJ. Bruce Fields } 8136d4ade98SSteven Whitehouse if (file && S_ISREG(inode->i_mode)) 8146d4ade98SSteven Whitehouse error = finish_open(file, dentry, gfs2_open_common, opened); 8156d4ade98SSteven Whitehouse 8162ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&gh); 8175ca1db41SMiklos Szeredi if (error) { 8185ca1db41SMiklos Szeredi dput(d); 8196d4ade98SSteven Whitehouse return ERR_PTR(error); 8205ca1db41SMiklos Szeredi } 8216d4ade98SSteven Whitehouse return d; 8222ab9cd1cSSteven Whitehouse } 8236d4ade98SSteven Whitehouse 8246d4ade98SSteven Whitehouse static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry, 8256d4ade98SSteven Whitehouse unsigned flags) 8266d4ade98SSteven Whitehouse { 8276d4ade98SSteven Whitehouse return __gfs2_lookup(dir, dentry, NULL, NULL); 8282ab9cd1cSSteven Whitehouse } 8292ab9cd1cSSteven Whitehouse 8302ab9cd1cSSteven Whitehouse /** 8312ab9cd1cSSteven Whitehouse * gfs2_link - Link to a file 8322ab9cd1cSSteven Whitehouse * @old_dentry: The inode to link 8332ab9cd1cSSteven Whitehouse * @dir: Add link to this directory 8342ab9cd1cSSteven Whitehouse * @dentry: The name of the link 8352ab9cd1cSSteven Whitehouse * 8362ab9cd1cSSteven Whitehouse * Link the inode in "old_dentry" into the directory "dir" with the 8372ab9cd1cSSteven Whitehouse * name in "dentry". 8382ab9cd1cSSteven Whitehouse * 8392ab9cd1cSSteven Whitehouse * Returns: errno 8402ab9cd1cSSteven Whitehouse */ 8412ab9cd1cSSteven Whitehouse 8422ab9cd1cSSteven Whitehouse static int gfs2_link(struct dentry *old_dentry, struct inode *dir, 8432ab9cd1cSSteven Whitehouse struct dentry *dentry) 8442ab9cd1cSSteven Whitehouse { 8452ab9cd1cSSteven Whitehouse struct gfs2_inode *dip = GFS2_I(dir); 8462ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 8472b0143b5SDavid Howells struct inode *inode = d_inode(old_dentry); 8482ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 8492ab9cd1cSSteven Whitehouse struct gfs2_holder ghs[2]; 8502ab9cd1cSSteven Whitehouse struct buffer_head *dibh; 85119aeb5a6SBob Peterson struct gfs2_diradd da = { .bh = NULL, .save_loc = 1, }; 8522ab9cd1cSSteven Whitehouse int error; 8532ab9cd1cSSteven Whitehouse 8542ab9cd1cSSteven Whitehouse if (S_ISDIR(inode->i_mode)) 8552ab9cd1cSSteven Whitehouse return -EPERM; 8562ab9cd1cSSteven Whitehouse 857b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(dip); 8580a305e49SBob Peterson if (error) 8590a305e49SBob Peterson return error; 8600a305e49SBob Peterson 8612ab9cd1cSSteven Whitehouse gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 8622ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); 8632ab9cd1cSSteven Whitehouse 8642ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs); /* parent */ 8652ab9cd1cSSteven Whitehouse if (error) 8662ab9cd1cSSteven Whitehouse goto out_parent; 8672ab9cd1cSSteven Whitehouse 8682ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + 1); /* child */ 8692ab9cd1cSSteven Whitehouse if (error) 8702ab9cd1cSSteven Whitehouse goto out_child; 8712ab9cd1cSSteven Whitehouse 8722ab9cd1cSSteven Whitehouse error = -ENOENT; 8732ab9cd1cSSteven Whitehouse if (inode->i_nlink == 0) 8742ab9cd1cSSteven Whitehouse goto out_gunlock; 8752ab9cd1cSSteven Whitehouse 87610556cb2SAl Viro error = gfs2_permission(dir, MAY_WRITE | MAY_EXEC); 8772ab9cd1cSSteven Whitehouse if (error) 8782ab9cd1cSSteven Whitehouse goto out_gunlock; 8792ab9cd1cSSteven Whitehouse 8802ab9cd1cSSteven Whitehouse error = gfs2_dir_check(dir, &dentry->d_name, NULL); 8812ab9cd1cSSteven Whitehouse switch (error) { 8822ab9cd1cSSteven Whitehouse case -ENOENT: 8832ab9cd1cSSteven Whitehouse break; 8842ab9cd1cSSteven Whitehouse case 0: 8852ab9cd1cSSteven Whitehouse error = -EEXIST; 8862ab9cd1cSSteven Whitehouse default: 8872ab9cd1cSSteven Whitehouse goto out_gunlock; 8882ab9cd1cSSteven Whitehouse } 8892ab9cd1cSSteven Whitehouse 8902ab9cd1cSSteven Whitehouse error = -EINVAL; 8912ab9cd1cSSteven Whitehouse if (!dip->i_inode.i_nlink) 8922ab9cd1cSSteven Whitehouse goto out_gunlock; 8932ab9cd1cSSteven Whitehouse error = -EFBIG; 8942ab9cd1cSSteven Whitehouse if (dip->i_entries == (u32)-1) 8952ab9cd1cSSteven Whitehouse goto out_gunlock; 8962ab9cd1cSSteven Whitehouse error = -EPERM; 8972ab9cd1cSSteven Whitehouse if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) 8982ab9cd1cSSteven Whitehouse goto out_gunlock; 8992ab9cd1cSSteven Whitehouse error = -EINVAL; 9002ab9cd1cSSteven Whitehouse if (!ip->i_inode.i_nlink) 9012ab9cd1cSSteven Whitehouse goto out_gunlock; 9022ab9cd1cSSteven Whitehouse error = -EMLINK; 9032ab9cd1cSSteven Whitehouse if (ip->i_inode.i_nlink == (u32)-1) 9042ab9cd1cSSteven Whitehouse goto out_gunlock; 9052ab9cd1cSSteven Whitehouse 9063c1c0ae1SSteven Whitehouse error = gfs2_diradd_alloc_required(dir, &dentry->d_name, &da); 9072ab9cd1cSSteven Whitehouse if (error < 0) 9082ab9cd1cSSteven Whitehouse goto out_gunlock; 9092ab9cd1cSSteven Whitehouse 9103c1c0ae1SSteven Whitehouse if (da.nr_blocks) { 9113c1c0ae1SSteven Whitehouse struct gfs2_alloc_parms ap = { .target = da.nr_blocks, }; 912b8fbf471SAbhi Das error = gfs2_quota_lock_check(dip, &ap); 9132ab9cd1cSSteven Whitehouse if (error) 9145407e242SBob Peterson goto out_gunlock; 9152ab9cd1cSSteven Whitehouse 9167b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(dip, &ap); 9172ab9cd1cSSteven Whitehouse if (error) 9182ab9cd1cSSteven Whitehouse goto out_gunlock_q; 9192ab9cd1cSSteven Whitehouse 920534cf9caSSteven Whitehouse error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(dip, &da, 2), 0); 9212ab9cd1cSSteven Whitehouse if (error) 9222ab9cd1cSSteven Whitehouse goto out_ipres; 9232ab9cd1cSSteven Whitehouse } else { 9242ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0); 9252ab9cd1cSSteven Whitehouse if (error) 9262ab9cd1cSSteven Whitehouse goto out_ipres; 9272ab9cd1cSSteven Whitehouse } 9282ab9cd1cSSteven Whitehouse 9292ab9cd1cSSteven Whitehouse error = gfs2_meta_inode_buffer(ip, &dibh); 9302ab9cd1cSSteven Whitehouse if (error) 9312ab9cd1cSSteven Whitehouse goto out_end_trans; 9322ab9cd1cSSteven Whitehouse 9332b47dad8SSteven Whitehouse error = gfs2_dir_add(dir, &dentry->d_name, ip, &da); 9342ab9cd1cSSteven Whitehouse if (error) 9352ab9cd1cSSteven Whitehouse goto out_brelse; 9362ab9cd1cSSteven Whitehouse 937350a9b0aSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, dibh); 9382ab9cd1cSSteven Whitehouse inc_nlink(&ip->i_inode); 9392ab9cd1cSSteven Whitehouse ip->i_inode.i_ctime = CURRENT_TIME; 940ab9bbda0SSteven Whitehouse ihold(inode); 941ab9bbda0SSteven Whitehouse d_instantiate(dentry, inode); 942ab9bbda0SSteven Whitehouse mark_inode_dirty(inode); 9432ab9cd1cSSteven Whitehouse 9442ab9cd1cSSteven Whitehouse out_brelse: 9452ab9cd1cSSteven Whitehouse brelse(dibh); 9462ab9cd1cSSteven Whitehouse out_end_trans: 9472ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 9482ab9cd1cSSteven Whitehouse out_ipres: 9493c1c0ae1SSteven Whitehouse if (da.nr_blocks) 9502ab9cd1cSSteven Whitehouse gfs2_inplace_release(dip); 9512ab9cd1cSSteven Whitehouse out_gunlock_q: 9523c1c0ae1SSteven Whitehouse if (da.nr_blocks) 9532ab9cd1cSSteven Whitehouse gfs2_quota_unlock(dip); 9542ab9cd1cSSteven Whitehouse out_gunlock: 9552b47dad8SSteven Whitehouse gfs2_dir_no_add(&da); 9562ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + 1); 9572ab9cd1cSSteven Whitehouse out_child: 9582ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs); 9592ab9cd1cSSteven Whitehouse out_parent: 9602ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs); 9612ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs + 1); 9622ab9cd1cSSteven Whitehouse return error; 9632ab9cd1cSSteven Whitehouse } 9642ab9cd1cSSteven Whitehouse 9652ab9cd1cSSteven Whitehouse /* 9662ab9cd1cSSteven Whitehouse * gfs2_unlink_ok - check to see that a inode is still in a directory 9672ab9cd1cSSteven Whitehouse * @dip: the directory 9682ab9cd1cSSteven Whitehouse * @name: the name of the file 9692ab9cd1cSSteven Whitehouse * @ip: the inode 9702ab9cd1cSSteven Whitehouse * 9712ab9cd1cSSteven Whitehouse * Assumes that the lock on (at least) @dip is held. 9722ab9cd1cSSteven Whitehouse * 9732ab9cd1cSSteven Whitehouse * Returns: 0 if the parent/child relationship is correct, errno if it isn't 9742ab9cd1cSSteven Whitehouse */ 9752ab9cd1cSSteven Whitehouse 9762ab9cd1cSSteven Whitehouse static int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name, 9772ab9cd1cSSteven Whitehouse const struct gfs2_inode *ip) 9782ab9cd1cSSteven Whitehouse { 9792ab9cd1cSSteven Whitehouse int error; 9802ab9cd1cSSteven Whitehouse 9812ab9cd1cSSteven Whitehouse if (IS_IMMUTABLE(&ip->i_inode) || IS_APPEND(&ip->i_inode)) 9822ab9cd1cSSteven Whitehouse return -EPERM; 9832ab9cd1cSSteven Whitehouse 9842ab9cd1cSSteven Whitehouse if ((dip->i_inode.i_mode & S_ISVTX) && 9856b24c0d2SEric W. Biederman !uid_eq(dip->i_inode.i_uid, current_fsuid()) && 9866b24c0d2SEric W. Biederman !uid_eq(ip->i_inode.i_uid, current_fsuid()) && !capable(CAP_FOWNER)) 9872ab9cd1cSSteven Whitehouse return -EPERM; 9882ab9cd1cSSteven Whitehouse 9892ab9cd1cSSteven Whitehouse if (IS_APPEND(&dip->i_inode)) 9902ab9cd1cSSteven Whitehouse return -EPERM; 9912ab9cd1cSSteven Whitehouse 99210556cb2SAl Viro error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC); 9932ab9cd1cSSteven Whitehouse if (error) 9942ab9cd1cSSteven Whitehouse return error; 9952ab9cd1cSSteven Whitehouse 99637975f15SFabian Frederick return gfs2_dir_check(&dip->i_inode, name, ip); 9972ab9cd1cSSteven Whitehouse } 9982ab9cd1cSSteven Whitehouse 9992ab9cd1cSSteven Whitehouse /** 10002ab9cd1cSSteven Whitehouse * gfs2_unlink_inode - Removes an inode from its parent dir and unlinks it 10012ab9cd1cSSteven Whitehouse * @dip: The parent directory 10022ab9cd1cSSteven Whitehouse * @name: The name of the entry in the parent directory 10032ab9cd1cSSteven Whitehouse * @inode: The inode to be removed 10042ab9cd1cSSteven Whitehouse * 10052ab9cd1cSSteven Whitehouse * Called with all the locks and in a transaction. This will only be 10062ab9cd1cSSteven Whitehouse * called for a directory after it has been checked to ensure it is empty. 10072ab9cd1cSSteven Whitehouse * 10082ab9cd1cSSteven Whitehouse * Returns: 0 on success, or an error 10092ab9cd1cSSteven Whitehouse */ 10102ab9cd1cSSteven Whitehouse 10112ab9cd1cSSteven Whitehouse static int gfs2_unlink_inode(struct gfs2_inode *dip, 10124327a9bfSBob Peterson const struct dentry *dentry) 10132ab9cd1cSSteven Whitehouse { 10142b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 10152ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 10162ab9cd1cSSteven Whitehouse int error; 10172ab9cd1cSSteven Whitehouse 10182ab9cd1cSSteven Whitehouse error = gfs2_dir_del(dip, dentry); 10192ab9cd1cSSteven Whitehouse if (error) 10202ab9cd1cSSteven Whitehouse return error; 10212ab9cd1cSSteven Whitehouse 10222ab9cd1cSSteven Whitehouse ip->i_entries = 0; 10232ab9cd1cSSteven Whitehouse inode->i_ctime = CURRENT_TIME; 10242ab9cd1cSSteven Whitehouse if (S_ISDIR(inode->i_mode)) 10252ab9cd1cSSteven Whitehouse clear_nlink(inode); 10262ab9cd1cSSteven Whitehouse else 10272ab9cd1cSSteven Whitehouse drop_nlink(inode); 10282ab9cd1cSSteven Whitehouse mark_inode_dirty(inode); 10292ab9cd1cSSteven Whitehouse if (inode->i_nlink == 0) 10302ab9cd1cSSteven Whitehouse gfs2_unlink_di(inode); 10312ab9cd1cSSteven Whitehouse return 0; 10322ab9cd1cSSteven Whitehouse } 10332ab9cd1cSSteven Whitehouse 10342ab9cd1cSSteven Whitehouse 10352ab9cd1cSSteven Whitehouse /** 10362ab9cd1cSSteven Whitehouse * gfs2_unlink - Unlink an inode (this does rmdir as well) 10372ab9cd1cSSteven Whitehouse * @dir: The inode of the directory containing the inode to unlink 10382ab9cd1cSSteven Whitehouse * @dentry: The file itself 10392ab9cd1cSSteven Whitehouse * 10402ab9cd1cSSteven Whitehouse * This routine uses the type of the inode as a flag to figure out 10412ab9cd1cSSteven Whitehouse * whether this is an unlink or an rmdir. 10422ab9cd1cSSteven Whitehouse * 10432ab9cd1cSSteven Whitehouse * Returns: errno 10442ab9cd1cSSteven Whitehouse */ 10452ab9cd1cSSteven Whitehouse 10462ab9cd1cSSteven Whitehouse static int gfs2_unlink(struct inode *dir, struct dentry *dentry) 10472ab9cd1cSSteven Whitehouse { 10482ab9cd1cSSteven Whitehouse struct gfs2_inode *dip = GFS2_I(dir); 10492ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 10502b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 10512ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 10522ab9cd1cSSteven Whitehouse struct gfs2_holder ghs[3]; 10532ab9cd1cSSteven Whitehouse struct gfs2_rgrpd *rgd; 10545e2f7d61SBob Peterson int error; 10555e2f7d61SBob Peterson 10565e2f7d61SBob Peterson error = gfs2_rindex_update(sdp); 10575e2f7d61SBob Peterson if (error) 10585e2f7d61SBob Peterson return error; 10595e2f7d61SBob Peterson 10605e2f7d61SBob Peterson error = -EROFS; 10612ab9cd1cSSteven Whitehouse 10622ab9cd1cSSteven Whitehouse gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 10632ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); 10642ab9cd1cSSteven Whitehouse 106566fc061bSSteven Whitehouse rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1); 1066a365fbf3SSteven Whitehouse if (!rgd) 106787654896SSteven Whitehouse goto out_inodes; 1068a365fbf3SSteven Whitehouse 10692ab9cd1cSSteven Whitehouse gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2); 10702ab9cd1cSSteven Whitehouse 10712ab9cd1cSSteven Whitehouse 10722ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs); /* parent */ 10732ab9cd1cSSteven Whitehouse if (error) 10742ab9cd1cSSteven Whitehouse goto out_parent; 10752ab9cd1cSSteven Whitehouse 10762ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + 1); /* child */ 10772ab9cd1cSSteven Whitehouse if (error) 10782ab9cd1cSSteven Whitehouse goto out_child; 10792ab9cd1cSSteven Whitehouse 10802ab9cd1cSSteven Whitehouse error = -ENOENT; 10812ab9cd1cSSteven Whitehouse if (inode->i_nlink == 0) 10822ab9cd1cSSteven Whitehouse goto out_rgrp; 10832ab9cd1cSSteven Whitehouse 10842ab9cd1cSSteven Whitehouse if (S_ISDIR(inode->i_mode)) { 10852ab9cd1cSSteven Whitehouse error = -ENOTEMPTY; 10862ab9cd1cSSteven Whitehouse if (ip->i_entries > 2 || inode->i_nlink > 2) 10872ab9cd1cSSteven Whitehouse goto out_rgrp; 10882ab9cd1cSSteven Whitehouse } 10892ab9cd1cSSteven Whitehouse 10902ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + 2); /* rgrp */ 10912ab9cd1cSSteven Whitehouse if (error) 10922ab9cd1cSSteven Whitehouse goto out_rgrp; 10932ab9cd1cSSteven Whitehouse 10942ab9cd1cSSteven Whitehouse error = gfs2_unlink_ok(dip, &dentry->d_name, ip); 10952ab9cd1cSSteven Whitehouse if (error) 10962ab9cd1cSSteven Whitehouse goto out_gunlock; 10972ab9cd1cSSteven Whitehouse 10982ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, 2*RES_DINODE + 3*RES_LEAF + RES_RG_BIT, 0); 10992ab9cd1cSSteven Whitehouse if (error) 11002ab9cd1cSSteven Whitehouse goto out_end_trans; 11012ab9cd1cSSteven Whitehouse 11024327a9bfSBob Peterson error = gfs2_unlink_inode(dip, dentry); 11032ab9cd1cSSteven Whitehouse 11042ab9cd1cSSteven Whitehouse out_end_trans: 11052ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 11062ab9cd1cSSteven Whitehouse out_gunlock: 11072ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + 2); 11082ab9cd1cSSteven Whitehouse out_rgrp: 11092ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + 1); 11102ab9cd1cSSteven Whitehouse out_child: 11112ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs); 11122ab9cd1cSSteven Whitehouse out_parent: 111387654896SSteven Whitehouse gfs2_holder_uninit(ghs + 2); 111487654896SSteven Whitehouse out_inodes: 111587654896SSteven Whitehouse gfs2_holder_uninit(ghs + 1); 11162ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs); 11172ab9cd1cSSteven Whitehouse return error; 11182ab9cd1cSSteven Whitehouse } 11192ab9cd1cSSteven Whitehouse 11202ab9cd1cSSteven Whitehouse /** 11212ab9cd1cSSteven Whitehouse * gfs2_symlink - Create a symlink 11222ab9cd1cSSteven Whitehouse * @dir: The directory to create the symlink in 11232ab9cd1cSSteven Whitehouse * @dentry: The dentry to put the symlink in 11242ab9cd1cSSteven Whitehouse * @symname: The thing which the link points to 11252ab9cd1cSSteven Whitehouse * 11262ab9cd1cSSteven Whitehouse * Returns: errno 11272ab9cd1cSSteven Whitehouse */ 11282ab9cd1cSSteven Whitehouse 11292ab9cd1cSSteven Whitehouse static int gfs2_symlink(struct inode *dir, struct dentry *dentry, 11302ab9cd1cSSteven Whitehouse const char *symname) 11312ab9cd1cSSteven Whitehouse { 11322ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 1133160b4026SSteven Whitehouse unsigned int size; 11342ab9cd1cSSteven Whitehouse 11352ab9cd1cSSteven Whitehouse size = strlen(symname); 11362ab9cd1cSSteven Whitehouse if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1) 11372ab9cd1cSSteven Whitehouse return -ENAMETOOLONG; 11382ab9cd1cSSteven Whitehouse 11396d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, NULL, S_IFLNK | S_IRWXUGO, 0, symname, size, 0, NULL); 11402ab9cd1cSSteven Whitehouse } 11412ab9cd1cSSteven Whitehouse 11422ab9cd1cSSteven Whitehouse /** 11432ab9cd1cSSteven Whitehouse * gfs2_mkdir - Make a directory 11442ab9cd1cSSteven Whitehouse * @dir: The parent directory of the new one 11452ab9cd1cSSteven Whitehouse * @dentry: The dentry of the new directory 11462ab9cd1cSSteven Whitehouse * @mode: The mode of the new directory 11472ab9cd1cSSteven Whitehouse * 11482ab9cd1cSSteven Whitehouse * Returns: errno 11492ab9cd1cSSteven Whitehouse */ 11502ab9cd1cSSteven Whitehouse 115118bb1db3SAl Viro static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) 11522ab9cd1cSSteven Whitehouse { 115328fb3027SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 115428fb3027SSteven Whitehouse unsigned dsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); 11556d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, NULL, S_IFDIR | mode, 0, NULL, dsize, 0, NULL); 11562ab9cd1cSSteven Whitehouse } 11572ab9cd1cSSteven Whitehouse 11582ab9cd1cSSteven Whitehouse /** 11592ab9cd1cSSteven Whitehouse * gfs2_mknod - Make a special file 11602ab9cd1cSSteven Whitehouse * @dir: The directory in which the special file will reside 11612ab9cd1cSSteven Whitehouse * @dentry: The dentry of the special file 11622ab9cd1cSSteven Whitehouse * @mode: The mode of the special file 1163f2741d98SSteven Whitehouse * @dev: The device specification of the special file 11642ab9cd1cSSteven Whitehouse * 11652ab9cd1cSSteven Whitehouse */ 11662ab9cd1cSSteven Whitehouse 11671a67aafbSAl Viro static int gfs2_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, 11682ab9cd1cSSteven Whitehouse dev_t dev) 11692ab9cd1cSSteven Whitehouse { 11706d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, NULL, mode, dev, NULL, 0, 0, NULL); 11716d4ade98SSteven Whitehouse } 11726d4ade98SSteven Whitehouse 11736d4ade98SSteven Whitehouse /** 11746d4ade98SSteven Whitehouse * gfs2_atomic_open - Atomically open a file 11756d4ade98SSteven Whitehouse * @dir: The directory 11766d4ade98SSteven Whitehouse * @dentry: The proposed new entry 11776d4ade98SSteven Whitehouse * @file: The proposed new struct file 11786d4ade98SSteven Whitehouse * @flags: open flags 11796d4ade98SSteven Whitehouse * @mode: File mode 11806d4ade98SSteven Whitehouse * @opened: Flag to say whether the file has been opened or not 11816d4ade98SSteven Whitehouse * 11826d4ade98SSteven Whitehouse * Returns: error code or 0 for success 11836d4ade98SSteven Whitehouse */ 11846d4ade98SSteven Whitehouse 11856d4ade98SSteven Whitehouse static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry, 11866d4ade98SSteven Whitehouse struct file *file, unsigned flags, 11876d4ade98SSteven Whitehouse umode_t mode, int *opened) 11886d4ade98SSteven Whitehouse { 11896d4ade98SSteven Whitehouse struct dentry *d; 11906d4ade98SSteven Whitehouse bool excl = !!(flags & O_EXCL); 11916d4ade98SSteven Whitehouse 11924d93bc3eSAl Viro if (!d_unhashed(dentry)) 11934d93bc3eSAl Viro goto skip_lookup; 11944d93bc3eSAl Viro 11956d4ade98SSteven Whitehouse d = __gfs2_lookup(dir, dentry, file, opened); 11966d4ade98SSteven Whitehouse if (IS_ERR(d)) 11976d4ade98SSteven Whitehouse return PTR_ERR(d); 11985ca1db41SMiklos Szeredi if (d != NULL) 11995ca1db41SMiklos Szeredi dentry = d; 12002b0143b5SDavid Howells if (d_really_is_positive(dentry)) { 1201ec7d879cSAl Viro if (!(*opened & FILE_OPENED)) 1202ec7d879cSAl Viro return finish_no_open(file, d); 12035ca1db41SMiklos Szeredi dput(d); 12046d4ade98SSteven Whitehouse return 0; 12056d4ade98SSteven Whitehouse } 12066d4ade98SSteven Whitehouse 12075ca1db41SMiklos Szeredi BUG_ON(d != NULL); 12084d93bc3eSAl Viro 12094d93bc3eSAl Viro skip_lookup: 12106d4ade98SSteven Whitehouse if (!(flags & O_CREAT)) 12116d4ade98SSteven Whitehouse return -ENOENT; 12126d4ade98SSteven Whitehouse 12136d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, file, S_IFREG | mode, 0, NULL, 0, excl, opened); 12142ab9cd1cSSteven Whitehouse } 12152ab9cd1cSSteven Whitehouse 12162ab9cd1cSSteven Whitehouse /* 12172ab9cd1cSSteven Whitehouse * gfs2_ok_to_move - check if it's ok to move a directory to another directory 12182ab9cd1cSSteven Whitehouse * @this: move this 12192ab9cd1cSSteven Whitehouse * @to: to here 12202ab9cd1cSSteven Whitehouse * 12212ab9cd1cSSteven Whitehouse * Follow @to back to the root and make sure we don't encounter @this 12222ab9cd1cSSteven Whitehouse * Assumes we already hold the rename lock. 12232ab9cd1cSSteven Whitehouse * 12242ab9cd1cSSteven Whitehouse * Returns: errno 12252ab9cd1cSSteven Whitehouse */ 12262ab9cd1cSSteven Whitehouse 12272ab9cd1cSSteven Whitehouse static int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to) 12282ab9cd1cSSteven Whitehouse { 12292ab9cd1cSSteven Whitehouse struct inode *dir = &to->i_inode; 12302ab9cd1cSSteven Whitehouse struct super_block *sb = dir->i_sb; 12312ab9cd1cSSteven Whitehouse struct inode *tmp; 12322ab9cd1cSSteven Whitehouse int error = 0; 12332ab9cd1cSSteven Whitehouse 12342ab9cd1cSSteven Whitehouse igrab(dir); 12352ab9cd1cSSteven Whitehouse 12362ab9cd1cSSteven Whitehouse for (;;) { 12372ab9cd1cSSteven Whitehouse if (dir == &this->i_inode) { 12382ab9cd1cSSteven Whitehouse error = -EINVAL; 12392ab9cd1cSSteven Whitehouse break; 12402ab9cd1cSSteven Whitehouse } 12412b0143b5SDavid Howells if (dir == d_inode(sb->s_root)) { 12422ab9cd1cSSteven Whitehouse error = 0; 12432ab9cd1cSSteven Whitehouse break; 12442ab9cd1cSSteven Whitehouse } 12452ab9cd1cSSteven Whitehouse 12462ab9cd1cSSteven Whitehouse tmp = gfs2_lookupi(dir, &gfs2_qdotdot, 1); 124748f8f711SAbhi Das if (!tmp) { 124848f8f711SAbhi Das error = -ENOENT; 124948f8f711SAbhi Das break; 125048f8f711SAbhi Das } 12512ab9cd1cSSteven Whitehouse if (IS_ERR(tmp)) { 12522ab9cd1cSSteven Whitehouse error = PTR_ERR(tmp); 12532ab9cd1cSSteven Whitehouse break; 12542ab9cd1cSSteven Whitehouse } 12552ab9cd1cSSteven Whitehouse 12562ab9cd1cSSteven Whitehouse iput(dir); 12572ab9cd1cSSteven Whitehouse dir = tmp; 12582ab9cd1cSSteven Whitehouse } 12592ab9cd1cSSteven Whitehouse 12602ab9cd1cSSteven Whitehouse iput(dir); 12612ab9cd1cSSteven Whitehouse 12622ab9cd1cSSteven Whitehouse return error; 12632ab9cd1cSSteven Whitehouse } 12642ab9cd1cSSteven Whitehouse 12652ab9cd1cSSteven Whitehouse /** 1266a63b7bbcSBenjamin Marzinski * update_moved_ino - Update an inode that's being moved 1267a63b7bbcSBenjamin Marzinski * @ip: The inode being moved 1268a63b7bbcSBenjamin Marzinski * @ndip: The parent directory of the new filename 1269a63b7bbcSBenjamin Marzinski * @dir_rename: True of ip is a directory 1270a63b7bbcSBenjamin Marzinski * 1271a63b7bbcSBenjamin Marzinski * Returns: errno 1272a63b7bbcSBenjamin Marzinski */ 1273a63b7bbcSBenjamin Marzinski 1274a63b7bbcSBenjamin Marzinski static int update_moved_ino(struct gfs2_inode *ip, struct gfs2_inode *ndip, 1275a63b7bbcSBenjamin Marzinski int dir_rename) 1276a63b7bbcSBenjamin Marzinski { 1277a63b7bbcSBenjamin Marzinski int error; 1278a63b7bbcSBenjamin Marzinski struct buffer_head *dibh; 1279a63b7bbcSBenjamin Marzinski 1280a63b7bbcSBenjamin Marzinski if (dir_rename) 1281a63b7bbcSBenjamin Marzinski return gfs2_dir_mvino(ip, &gfs2_qdotdot, ndip, DT_DIR); 1282a63b7bbcSBenjamin Marzinski 1283a63b7bbcSBenjamin Marzinski error = gfs2_meta_inode_buffer(ip, &dibh); 1284a63b7bbcSBenjamin Marzinski if (error) 1285a63b7bbcSBenjamin Marzinski return error; 1286a63b7bbcSBenjamin Marzinski ip->i_inode.i_ctime = CURRENT_TIME; 1287a63b7bbcSBenjamin Marzinski gfs2_trans_add_meta(ip->i_gl, dibh); 1288a63b7bbcSBenjamin Marzinski gfs2_dinode_out(ip, dibh->b_data); 1289a63b7bbcSBenjamin Marzinski brelse(dibh); 1290a63b7bbcSBenjamin Marzinski return 0; 1291a63b7bbcSBenjamin Marzinski } 1292a63b7bbcSBenjamin Marzinski 1293a63b7bbcSBenjamin Marzinski 1294a63b7bbcSBenjamin Marzinski /** 12952ab9cd1cSSteven Whitehouse * gfs2_rename - Rename a file 12962ab9cd1cSSteven Whitehouse * @odir: Parent directory of old file name 12972ab9cd1cSSteven Whitehouse * @odentry: The old dentry of the file 12982ab9cd1cSSteven Whitehouse * @ndir: Parent directory of new file name 12992ab9cd1cSSteven Whitehouse * @ndentry: The new dentry of the file 13002ab9cd1cSSteven Whitehouse * 13012ab9cd1cSSteven Whitehouse * Returns: errno 13022ab9cd1cSSteven Whitehouse */ 13032ab9cd1cSSteven Whitehouse 13042ab9cd1cSSteven Whitehouse static int gfs2_rename(struct inode *odir, struct dentry *odentry, 13052ab9cd1cSSteven Whitehouse struct inode *ndir, struct dentry *ndentry) 13062ab9cd1cSSteven Whitehouse { 13072ab9cd1cSSteven Whitehouse struct gfs2_inode *odip = GFS2_I(odir); 13082ab9cd1cSSteven Whitehouse struct gfs2_inode *ndip = GFS2_I(ndir); 13092b0143b5SDavid Howells struct gfs2_inode *ip = GFS2_I(d_inode(odentry)); 13102ab9cd1cSSteven Whitehouse struct gfs2_inode *nip = NULL; 13112ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(odir); 13128339ee54SSteven Whitehouse struct gfs2_holder ghs[5], r_gh = { .gh_gl = NULL, }; 13132ab9cd1cSSteven Whitehouse struct gfs2_rgrpd *nrgd; 13142ab9cd1cSSteven Whitehouse unsigned int num_gh; 13152ab9cd1cSSteven Whitehouse int dir_rename = 0; 131619aeb5a6SBob Peterson struct gfs2_diradd da = { .nr_blocks = 0, .save_loc = 0, }; 13172ab9cd1cSSteven Whitehouse unsigned int x; 13182ab9cd1cSSteven Whitehouse int error; 13192ab9cd1cSSteven Whitehouse 13202b0143b5SDavid Howells if (d_really_is_positive(ndentry)) { 13212b0143b5SDavid Howells nip = GFS2_I(d_inode(ndentry)); 13222ab9cd1cSSteven Whitehouse if (ip == nip) 13232ab9cd1cSSteven Whitehouse return 0; 13242ab9cd1cSSteven Whitehouse } 13252ab9cd1cSSteven Whitehouse 13265e2f7d61SBob Peterson error = gfs2_rindex_update(sdp); 13275e2f7d61SBob Peterson if (error) 13285e2f7d61SBob Peterson return error; 13295e2f7d61SBob Peterson 1330b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ndip); 13310a305e49SBob Peterson if (error) 13320a305e49SBob Peterson return error; 13330a305e49SBob Peterson 13342ab9cd1cSSteven Whitehouse if (odip != ndip) { 13352ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE, 13362ab9cd1cSSteven Whitehouse 0, &r_gh); 13372ab9cd1cSSteven Whitehouse if (error) 13382ab9cd1cSSteven Whitehouse goto out; 13392ab9cd1cSSteven Whitehouse 13402ab9cd1cSSteven Whitehouse if (S_ISDIR(ip->i_inode.i_mode)) { 13412ab9cd1cSSteven Whitehouse dir_rename = 1; 1342a63b7bbcSBenjamin Marzinski /* don't move a directory into its subdir */ 13432ab9cd1cSSteven Whitehouse error = gfs2_ok_to_move(ip, ndip); 13442ab9cd1cSSteven Whitehouse if (error) 13452ab9cd1cSSteven Whitehouse goto out_gunlock_r; 13462ab9cd1cSSteven Whitehouse } 13472ab9cd1cSSteven Whitehouse } 13482ab9cd1cSSteven Whitehouse 13492ab9cd1cSSteven Whitehouse num_gh = 1; 13502ab9cd1cSSteven Whitehouse gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 13512ab9cd1cSSteven Whitehouse if (odip != ndip) { 13522ab9cd1cSSteven Whitehouse gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 13532ab9cd1cSSteven Whitehouse num_gh++; 13542ab9cd1cSSteven Whitehouse } 13552ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 13562ab9cd1cSSteven Whitehouse num_gh++; 13572ab9cd1cSSteven Whitehouse 13582ab9cd1cSSteven Whitehouse if (nip) { 13592ab9cd1cSSteven Whitehouse gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 13602ab9cd1cSSteven Whitehouse num_gh++; 13612ab9cd1cSSteven Whitehouse /* grab the resource lock for unlink flag twiddling 13622ab9cd1cSSteven Whitehouse * this is the case of the target file already existing 13632ab9cd1cSSteven Whitehouse * so we unlink before doing the rename 13642ab9cd1cSSteven Whitehouse */ 136566fc061bSSteven Whitehouse nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr, 1); 13662ab9cd1cSSteven Whitehouse if (nrgd) 13672ab9cd1cSSteven Whitehouse gfs2_holder_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++); 13682ab9cd1cSSteven Whitehouse } 13692ab9cd1cSSteven Whitehouse 13702ab9cd1cSSteven Whitehouse for (x = 0; x < num_gh; x++) { 13712ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + x); 13722ab9cd1cSSteven Whitehouse if (error) 13732ab9cd1cSSteven Whitehouse goto out_gunlock; 13742ab9cd1cSSteven Whitehouse } 13752ab9cd1cSSteven Whitehouse 13762ab9cd1cSSteven Whitehouse error = -ENOENT; 13772ab9cd1cSSteven Whitehouse if (ip->i_inode.i_nlink == 0) 13782ab9cd1cSSteven Whitehouse goto out_gunlock; 13792ab9cd1cSSteven Whitehouse 13802ab9cd1cSSteven Whitehouse /* Check out the old directory */ 13812ab9cd1cSSteven Whitehouse 13822ab9cd1cSSteven Whitehouse error = gfs2_unlink_ok(odip, &odentry->d_name, ip); 13832ab9cd1cSSteven Whitehouse if (error) 13842ab9cd1cSSteven Whitehouse goto out_gunlock; 13852ab9cd1cSSteven Whitehouse 13862ab9cd1cSSteven Whitehouse /* Check out the new directory */ 13872ab9cd1cSSteven Whitehouse 13882ab9cd1cSSteven Whitehouse if (nip) { 13892ab9cd1cSSteven Whitehouse error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip); 13902ab9cd1cSSteven Whitehouse if (error) 13912ab9cd1cSSteven Whitehouse goto out_gunlock; 13922ab9cd1cSSteven Whitehouse 13932ab9cd1cSSteven Whitehouse if (nip->i_inode.i_nlink == 0) { 13942ab9cd1cSSteven Whitehouse error = -EAGAIN; 13952ab9cd1cSSteven Whitehouse goto out_gunlock; 13962ab9cd1cSSteven Whitehouse } 13972ab9cd1cSSteven Whitehouse 13982ab9cd1cSSteven Whitehouse if (S_ISDIR(nip->i_inode.i_mode)) { 13992ab9cd1cSSteven Whitehouse if (nip->i_entries < 2) { 14002ab9cd1cSSteven Whitehouse gfs2_consist_inode(nip); 14012ab9cd1cSSteven Whitehouse error = -EIO; 14022ab9cd1cSSteven Whitehouse goto out_gunlock; 14032ab9cd1cSSteven Whitehouse } 14042ab9cd1cSSteven Whitehouse if (nip->i_entries > 2) { 14052ab9cd1cSSteven Whitehouse error = -ENOTEMPTY; 14062ab9cd1cSSteven Whitehouse goto out_gunlock; 14072ab9cd1cSSteven Whitehouse } 14082ab9cd1cSSteven Whitehouse } 14092ab9cd1cSSteven Whitehouse } else { 141010556cb2SAl Viro error = gfs2_permission(ndir, MAY_WRITE | MAY_EXEC); 14112ab9cd1cSSteven Whitehouse if (error) 14122ab9cd1cSSteven Whitehouse goto out_gunlock; 14132ab9cd1cSSteven Whitehouse 14142ab9cd1cSSteven Whitehouse error = gfs2_dir_check(ndir, &ndentry->d_name, NULL); 14152ab9cd1cSSteven Whitehouse switch (error) { 14162ab9cd1cSSteven Whitehouse case -ENOENT: 14172ab9cd1cSSteven Whitehouse error = 0; 14182ab9cd1cSSteven Whitehouse break; 14192ab9cd1cSSteven Whitehouse case 0: 14202ab9cd1cSSteven Whitehouse error = -EEXIST; 14212ab9cd1cSSteven Whitehouse default: 14222ab9cd1cSSteven Whitehouse goto out_gunlock; 14232ab9cd1cSSteven Whitehouse }; 14242ab9cd1cSSteven Whitehouse 14252ab9cd1cSSteven Whitehouse if (odip != ndip) { 14262ab9cd1cSSteven Whitehouse if (!ndip->i_inode.i_nlink) { 14272ab9cd1cSSteven Whitehouse error = -ENOENT; 14282ab9cd1cSSteven Whitehouse goto out_gunlock; 14292ab9cd1cSSteven Whitehouse } 14302ab9cd1cSSteven Whitehouse if (ndip->i_entries == (u32)-1) { 14312ab9cd1cSSteven Whitehouse error = -EFBIG; 14322ab9cd1cSSteven Whitehouse goto out_gunlock; 14332ab9cd1cSSteven Whitehouse } 14342ab9cd1cSSteven Whitehouse if (S_ISDIR(ip->i_inode.i_mode) && 14352ab9cd1cSSteven Whitehouse ndip->i_inode.i_nlink == (u32)-1) { 14362ab9cd1cSSteven Whitehouse error = -EMLINK; 14372ab9cd1cSSteven Whitehouse goto out_gunlock; 14382ab9cd1cSSteven Whitehouse } 14392ab9cd1cSSteven Whitehouse } 14402ab9cd1cSSteven Whitehouse } 14412ab9cd1cSSteven Whitehouse 14422ab9cd1cSSteven Whitehouse /* Check out the dir to be renamed */ 14432ab9cd1cSSteven Whitehouse 14442ab9cd1cSSteven Whitehouse if (dir_rename) { 14452b0143b5SDavid Howells error = gfs2_permission(d_inode(odentry), MAY_WRITE); 14462ab9cd1cSSteven Whitehouse if (error) 14472ab9cd1cSSteven Whitehouse goto out_gunlock; 14482ab9cd1cSSteven Whitehouse } 14492ab9cd1cSSteven Whitehouse 14503c1c0ae1SSteven Whitehouse if (nip == NULL) { 14513c1c0ae1SSteven Whitehouse error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name, &da); 14523c1c0ae1SSteven Whitehouse if (error) 14532ab9cd1cSSteven Whitehouse goto out_gunlock; 14543c1c0ae1SSteven Whitehouse } 14552ab9cd1cSSteven Whitehouse 14563c1c0ae1SSteven Whitehouse if (da.nr_blocks) { 14573c1c0ae1SSteven Whitehouse struct gfs2_alloc_parms ap = { .target = da.nr_blocks, }; 1458b8fbf471SAbhi Das error = gfs2_quota_lock_check(ndip, &ap); 14592ab9cd1cSSteven Whitehouse if (error) 14605407e242SBob Peterson goto out_gunlock; 14612ab9cd1cSSteven Whitehouse 14627b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(ndip, &ap); 14632ab9cd1cSSteven Whitehouse if (error) 14642ab9cd1cSSteven Whitehouse goto out_gunlock_q; 14652ab9cd1cSSteven Whitehouse 1466534cf9caSSteven Whitehouse error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(ndip, &da, 4) + 1467534cf9caSSteven Whitehouse 4 * RES_LEAF + 4, 0); 14682ab9cd1cSSteven Whitehouse if (error) 14692ab9cd1cSSteven Whitehouse goto out_ipreserv; 14702ab9cd1cSSteven Whitehouse } else { 14712ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, 4 * RES_DINODE + 14722ab9cd1cSSteven Whitehouse 5 * RES_LEAF + 4, 0); 14732ab9cd1cSSteven Whitehouse if (error) 14742ab9cd1cSSteven Whitehouse goto out_gunlock; 14752ab9cd1cSSteven Whitehouse } 14762ab9cd1cSSteven Whitehouse 14772ab9cd1cSSteven Whitehouse /* Remove the target file, if it exists */ 14782ab9cd1cSSteven Whitehouse 14794327a9bfSBob Peterson if (nip) 14804327a9bfSBob Peterson error = gfs2_unlink_inode(ndip, ndentry); 14812ab9cd1cSSteven Whitehouse 1482a63b7bbcSBenjamin Marzinski error = update_moved_ino(ip, ndip, dir_rename); 14832ab9cd1cSSteven Whitehouse if (error) 14842ab9cd1cSSteven Whitehouse goto out_end_trans; 14852ab9cd1cSSteven Whitehouse 14862ab9cd1cSSteven Whitehouse error = gfs2_dir_del(odip, odentry); 14872ab9cd1cSSteven Whitehouse if (error) 14882ab9cd1cSSteven Whitehouse goto out_end_trans; 14892ab9cd1cSSteven Whitehouse 14902b47dad8SSteven Whitehouse error = gfs2_dir_add(ndir, &ndentry->d_name, ip, &da); 14912ab9cd1cSSteven Whitehouse if (error) 14922ab9cd1cSSteven Whitehouse goto out_end_trans; 14932ab9cd1cSSteven Whitehouse 14942ab9cd1cSSteven Whitehouse out_end_trans: 14952ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 14962ab9cd1cSSteven Whitehouse out_ipreserv: 14973c1c0ae1SSteven Whitehouse if (da.nr_blocks) 14982ab9cd1cSSteven Whitehouse gfs2_inplace_release(ndip); 14992ab9cd1cSSteven Whitehouse out_gunlock_q: 15003c1c0ae1SSteven Whitehouse if (da.nr_blocks) 15012ab9cd1cSSteven Whitehouse gfs2_quota_unlock(ndip); 15022ab9cd1cSSteven Whitehouse out_gunlock: 15032b47dad8SSteven Whitehouse gfs2_dir_no_add(&da); 15042ab9cd1cSSteven Whitehouse while (x--) { 15052ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + x); 15062ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs + x); 15072ab9cd1cSSteven Whitehouse } 15082ab9cd1cSSteven Whitehouse out_gunlock_r: 15092ab9cd1cSSteven Whitehouse if (r_gh.gh_gl) 15102ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&r_gh); 15112ab9cd1cSSteven Whitehouse out: 15122ab9cd1cSSteven Whitehouse return error; 15132ab9cd1cSSteven Whitehouse } 15142ab9cd1cSSteven Whitehouse 15152ab9cd1cSSteven Whitehouse /** 1516a63b7bbcSBenjamin Marzinski * gfs2_exchange - exchange two files 1517a63b7bbcSBenjamin Marzinski * @odir: Parent directory of old file name 1518a63b7bbcSBenjamin Marzinski * @odentry: The old dentry of the file 1519a63b7bbcSBenjamin Marzinski * @ndir: Parent directory of new file name 1520a63b7bbcSBenjamin Marzinski * @ndentry: The new dentry of the file 1521a63b7bbcSBenjamin Marzinski * @flags: The rename flags 1522a63b7bbcSBenjamin Marzinski * 1523a63b7bbcSBenjamin Marzinski * Returns: errno 1524a63b7bbcSBenjamin Marzinski */ 1525a63b7bbcSBenjamin Marzinski 1526a63b7bbcSBenjamin Marzinski static int gfs2_exchange(struct inode *odir, struct dentry *odentry, 1527a63b7bbcSBenjamin Marzinski struct inode *ndir, struct dentry *ndentry, 1528a63b7bbcSBenjamin Marzinski unsigned int flags) 1529a63b7bbcSBenjamin Marzinski { 1530a63b7bbcSBenjamin Marzinski struct gfs2_inode *odip = GFS2_I(odir); 1531a63b7bbcSBenjamin Marzinski struct gfs2_inode *ndip = GFS2_I(ndir); 1532a63b7bbcSBenjamin Marzinski struct gfs2_inode *oip = GFS2_I(odentry->d_inode); 1533a63b7bbcSBenjamin Marzinski struct gfs2_inode *nip = GFS2_I(ndentry->d_inode); 1534a63b7bbcSBenjamin Marzinski struct gfs2_sbd *sdp = GFS2_SB(odir); 1535a63b7bbcSBenjamin Marzinski struct gfs2_holder ghs[5], r_gh = { .gh_gl = NULL, }; 1536a63b7bbcSBenjamin Marzinski unsigned int num_gh; 1537a63b7bbcSBenjamin Marzinski unsigned int x; 1538a63b7bbcSBenjamin Marzinski umode_t old_mode = oip->i_inode.i_mode; 1539a63b7bbcSBenjamin Marzinski umode_t new_mode = nip->i_inode.i_mode; 1540a63b7bbcSBenjamin Marzinski int error; 1541a63b7bbcSBenjamin Marzinski 1542a63b7bbcSBenjamin Marzinski error = gfs2_rindex_update(sdp); 1543a63b7bbcSBenjamin Marzinski if (error) 1544a63b7bbcSBenjamin Marzinski return error; 1545a63b7bbcSBenjamin Marzinski 1546a63b7bbcSBenjamin Marzinski if (odip != ndip) { 1547a63b7bbcSBenjamin Marzinski error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE, 1548a63b7bbcSBenjamin Marzinski 0, &r_gh); 1549a63b7bbcSBenjamin Marzinski if (error) 1550a63b7bbcSBenjamin Marzinski goto out; 1551a63b7bbcSBenjamin Marzinski 1552a63b7bbcSBenjamin Marzinski if (S_ISDIR(old_mode)) { 1553a63b7bbcSBenjamin Marzinski /* don't move a directory into its subdir */ 1554a63b7bbcSBenjamin Marzinski error = gfs2_ok_to_move(oip, ndip); 1555a63b7bbcSBenjamin Marzinski if (error) 1556a63b7bbcSBenjamin Marzinski goto out_gunlock_r; 1557a63b7bbcSBenjamin Marzinski } 1558a63b7bbcSBenjamin Marzinski 1559a63b7bbcSBenjamin Marzinski if (S_ISDIR(new_mode)) { 1560a63b7bbcSBenjamin Marzinski /* don't move a directory into its subdir */ 1561a63b7bbcSBenjamin Marzinski error = gfs2_ok_to_move(nip, odip); 1562a63b7bbcSBenjamin Marzinski if (error) 1563a63b7bbcSBenjamin Marzinski goto out_gunlock_r; 1564a63b7bbcSBenjamin Marzinski } 1565a63b7bbcSBenjamin Marzinski } 1566a63b7bbcSBenjamin Marzinski 1567a63b7bbcSBenjamin Marzinski num_gh = 1; 1568a63b7bbcSBenjamin Marzinski gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 1569a63b7bbcSBenjamin Marzinski if (odip != ndip) { 1570a63b7bbcSBenjamin Marzinski gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 1571a63b7bbcSBenjamin Marzinski num_gh++; 1572a63b7bbcSBenjamin Marzinski } 1573a63b7bbcSBenjamin Marzinski gfs2_holder_init(oip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 1574a63b7bbcSBenjamin Marzinski num_gh++; 1575a63b7bbcSBenjamin Marzinski 1576a63b7bbcSBenjamin Marzinski gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 1577a63b7bbcSBenjamin Marzinski num_gh++; 1578a63b7bbcSBenjamin Marzinski 1579a63b7bbcSBenjamin Marzinski for (x = 0; x < num_gh; x++) { 1580a63b7bbcSBenjamin Marzinski error = gfs2_glock_nq(ghs + x); 1581a63b7bbcSBenjamin Marzinski if (error) 1582a63b7bbcSBenjamin Marzinski goto out_gunlock; 1583a63b7bbcSBenjamin Marzinski } 1584a63b7bbcSBenjamin Marzinski 1585a63b7bbcSBenjamin Marzinski error = -ENOENT; 1586a63b7bbcSBenjamin Marzinski if (oip->i_inode.i_nlink == 0 || nip->i_inode.i_nlink == 0) 1587a63b7bbcSBenjamin Marzinski goto out_gunlock; 1588a63b7bbcSBenjamin Marzinski 1589a63b7bbcSBenjamin Marzinski error = gfs2_unlink_ok(odip, &odentry->d_name, oip); 1590a63b7bbcSBenjamin Marzinski if (error) 1591a63b7bbcSBenjamin Marzinski goto out_gunlock; 1592a63b7bbcSBenjamin Marzinski error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip); 1593a63b7bbcSBenjamin Marzinski if (error) 1594a63b7bbcSBenjamin Marzinski goto out_gunlock; 1595a63b7bbcSBenjamin Marzinski 1596a63b7bbcSBenjamin Marzinski if (S_ISDIR(old_mode)) { 1597a63b7bbcSBenjamin Marzinski error = gfs2_permission(odentry->d_inode, MAY_WRITE); 1598a63b7bbcSBenjamin Marzinski if (error) 1599a63b7bbcSBenjamin Marzinski goto out_gunlock; 1600a63b7bbcSBenjamin Marzinski } 1601a63b7bbcSBenjamin Marzinski if (S_ISDIR(new_mode)) { 1602a63b7bbcSBenjamin Marzinski error = gfs2_permission(ndentry->d_inode, MAY_WRITE); 1603a63b7bbcSBenjamin Marzinski if (error) 1604a63b7bbcSBenjamin Marzinski goto out_gunlock; 1605a63b7bbcSBenjamin Marzinski } 1606a63b7bbcSBenjamin Marzinski error = gfs2_trans_begin(sdp, 4 * RES_DINODE + 4 * RES_LEAF, 0); 1607a63b7bbcSBenjamin Marzinski if (error) 1608a63b7bbcSBenjamin Marzinski goto out_gunlock; 1609a63b7bbcSBenjamin Marzinski 1610a63b7bbcSBenjamin Marzinski error = update_moved_ino(oip, ndip, S_ISDIR(old_mode)); 1611a63b7bbcSBenjamin Marzinski if (error) 1612a63b7bbcSBenjamin Marzinski goto out_end_trans; 1613a63b7bbcSBenjamin Marzinski 1614a63b7bbcSBenjamin Marzinski error = update_moved_ino(nip, odip, S_ISDIR(new_mode)); 1615a63b7bbcSBenjamin Marzinski if (error) 1616a63b7bbcSBenjamin Marzinski goto out_end_trans; 1617a63b7bbcSBenjamin Marzinski 1618a63b7bbcSBenjamin Marzinski error = gfs2_dir_mvino(ndip, &ndentry->d_name, oip, 1619a63b7bbcSBenjamin Marzinski IF2DT(old_mode)); 1620a63b7bbcSBenjamin Marzinski if (error) 1621a63b7bbcSBenjamin Marzinski goto out_end_trans; 1622a63b7bbcSBenjamin Marzinski 1623a63b7bbcSBenjamin Marzinski error = gfs2_dir_mvino(odip, &odentry->d_name, nip, 1624a63b7bbcSBenjamin Marzinski IF2DT(new_mode)); 1625a63b7bbcSBenjamin Marzinski if (error) 1626a63b7bbcSBenjamin Marzinski goto out_end_trans; 1627a63b7bbcSBenjamin Marzinski 1628a63b7bbcSBenjamin Marzinski if (odip != ndip) { 1629a63b7bbcSBenjamin Marzinski if (S_ISDIR(new_mode) && !S_ISDIR(old_mode)) { 1630a63b7bbcSBenjamin Marzinski inc_nlink(&odip->i_inode); 1631a63b7bbcSBenjamin Marzinski drop_nlink(&ndip->i_inode); 1632a63b7bbcSBenjamin Marzinski } else if (S_ISDIR(old_mode) && !S_ISDIR(new_mode)) { 1633a63b7bbcSBenjamin Marzinski inc_nlink(&ndip->i_inode); 1634a63b7bbcSBenjamin Marzinski drop_nlink(&odip->i_inode); 1635a63b7bbcSBenjamin Marzinski } 1636a63b7bbcSBenjamin Marzinski } 1637a63b7bbcSBenjamin Marzinski mark_inode_dirty(&ndip->i_inode); 1638a63b7bbcSBenjamin Marzinski if (odip != ndip) 1639a63b7bbcSBenjamin Marzinski mark_inode_dirty(&odip->i_inode); 1640a63b7bbcSBenjamin Marzinski 1641a63b7bbcSBenjamin Marzinski out_end_trans: 1642a63b7bbcSBenjamin Marzinski gfs2_trans_end(sdp); 1643a63b7bbcSBenjamin Marzinski out_gunlock: 1644a63b7bbcSBenjamin Marzinski while (x--) { 1645a63b7bbcSBenjamin Marzinski gfs2_glock_dq(ghs + x); 1646a63b7bbcSBenjamin Marzinski gfs2_holder_uninit(ghs + x); 1647a63b7bbcSBenjamin Marzinski } 1648a63b7bbcSBenjamin Marzinski out_gunlock_r: 1649a63b7bbcSBenjamin Marzinski if (r_gh.gh_gl) 1650a63b7bbcSBenjamin Marzinski gfs2_glock_dq_uninit(&r_gh); 1651a63b7bbcSBenjamin Marzinski out: 1652a63b7bbcSBenjamin Marzinski return error; 1653a63b7bbcSBenjamin Marzinski } 1654a63b7bbcSBenjamin Marzinski 1655a63b7bbcSBenjamin Marzinski static int gfs2_rename2(struct inode *odir, struct dentry *odentry, 1656a63b7bbcSBenjamin Marzinski struct inode *ndir, struct dentry *ndentry, 1657a63b7bbcSBenjamin Marzinski unsigned int flags) 1658a63b7bbcSBenjamin Marzinski { 1659a63b7bbcSBenjamin Marzinski flags &= ~RENAME_NOREPLACE; 1660a63b7bbcSBenjamin Marzinski 1661a63b7bbcSBenjamin Marzinski if (flags & ~RENAME_EXCHANGE) 1662a63b7bbcSBenjamin Marzinski return -EINVAL; 1663a63b7bbcSBenjamin Marzinski 1664a63b7bbcSBenjamin Marzinski if (flags & RENAME_EXCHANGE) 1665a63b7bbcSBenjamin Marzinski return gfs2_exchange(odir, odentry, ndir, ndentry, flags); 1666a63b7bbcSBenjamin Marzinski 1667a63b7bbcSBenjamin Marzinski return gfs2_rename(odir, odentry, ndir, ndentry); 1668a63b7bbcSBenjamin Marzinski } 1669a63b7bbcSBenjamin Marzinski 1670a63b7bbcSBenjamin Marzinski /** 16716b255391SAl Viro * gfs2_get_link - Follow a symbolic link 16722ab9cd1cSSteven Whitehouse * @dentry: The dentry of the link 16736b255391SAl Viro * @inode: The inode of the link 1674fceef393SAl Viro * @done: destructor for return value 16752ab9cd1cSSteven Whitehouse * 16762ab9cd1cSSteven Whitehouse * This can handle symlinks of any size. 16772ab9cd1cSSteven Whitehouse * 16782ab9cd1cSSteven Whitehouse * Returns: 0 on success or error code 16792ab9cd1cSSteven Whitehouse */ 16802ab9cd1cSSteven Whitehouse 16816b255391SAl Viro static const char *gfs2_get_link(struct dentry *dentry, 1682fceef393SAl Viro struct inode *inode, 1683fceef393SAl Viro struct delayed_call *done) 16842ab9cd1cSSteven Whitehouse { 16856b255391SAl Viro struct gfs2_inode *ip = GFS2_I(inode); 16862ab9cd1cSSteven Whitehouse struct gfs2_holder i_gh; 16872ab9cd1cSSteven Whitehouse struct buffer_head *dibh; 1688160b4026SSteven Whitehouse unsigned int size; 16892ab9cd1cSSteven Whitehouse char *buf; 16902ab9cd1cSSteven Whitehouse int error; 16912ab9cd1cSSteven Whitehouse 16926b255391SAl Viro if (!dentry) 16936b255391SAl Viro return ERR_PTR(-ECHILD); 16946b255391SAl Viro 16952ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh); 16962ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(&i_gh); 16972ab9cd1cSSteven Whitehouse if (error) { 16982ab9cd1cSSteven Whitehouse gfs2_holder_uninit(&i_gh); 1699680baacbSAl Viro return ERR_PTR(error); 17002ab9cd1cSSteven Whitehouse } 17012ab9cd1cSSteven Whitehouse 17022ab9cd1cSSteven Whitehouse size = (unsigned int)i_size_read(&ip->i_inode); 17032ab9cd1cSSteven Whitehouse if (size == 0) { 17042ab9cd1cSSteven Whitehouse gfs2_consist_inode(ip); 17052ab9cd1cSSteven Whitehouse buf = ERR_PTR(-EIO); 17062ab9cd1cSSteven Whitehouse goto out; 17072ab9cd1cSSteven Whitehouse } 17082ab9cd1cSSteven Whitehouse 17092ab9cd1cSSteven Whitehouse error = gfs2_meta_inode_buffer(ip, &dibh); 17102ab9cd1cSSteven Whitehouse if (error) { 17112ab9cd1cSSteven Whitehouse buf = ERR_PTR(error); 17122ab9cd1cSSteven Whitehouse goto out; 17132ab9cd1cSSteven Whitehouse } 17142ab9cd1cSSteven Whitehouse 1715160b4026SSteven Whitehouse buf = kzalloc(size + 1, GFP_NOFS); 17162ab9cd1cSSteven Whitehouse if (!buf) 17172ab9cd1cSSteven Whitehouse buf = ERR_PTR(-ENOMEM); 17182ab9cd1cSSteven Whitehouse else 1719160b4026SSteven Whitehouse memcpy(buf, dibh->b_data + sizeof(struct gfs2_dinode), size); 17202ab9cd1cSSteven Whitehouse brelse(dibh); 17212ab9cd1cSSteven Whitehouse out: 17222ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&i_gh); 1723680baacbSAl Viro if (!IS_ERR(buf)) 1724fceef393SAl Viro set_delayed_call(done, kfree_link, buf); 1725680baacbSAl Viro return buf; 17262ab9cd1cSSteven Whitehouse } 17272ab9cd1cSSteven Whitehouse 17282ab9cd1cSSteven Whitehouse /** 17292ab9cd1cSSteven Whitehouse * gfs2_permission - 17302ab9cd1cSSteven Whitehouse * @inode: The inode 17312ab9cd1cSSteven Whitehouse * @mask: The mask to be tested 17322ab9cd1cSSteven Whitehouse * @flags: Indicates whether this is an RCU path walk or not 17332ab9cd1cSSteven Whitehouse * 17342ab9cd1cSSteven Whitehouse * This may be called from the VFS directly, or from within GFS2 with the 17352ab9cd1cSSteven Whitehouse * inode locked, so we look to see if the glock is already locked and only 17362ab9cd1cSSteven Whitehouse * lock the glock if its not already been done. 17372ab9cd1cSSteven Whitehouse * 17382ab9cd1cSSteven Whitehouse * Returns: errno 17392ab9cd1cSSteven Whitehouse */ 17402ab9cd1cSSteven Whitehouse 174110556cb2SAl Viro int gfs2_permission(struct inode *inode, int mask) 17422ab9cd1cSSteven Whitehouse { 17432ab9cd1cSSteven Whitehouse struct gfs2_inode *ip; 17442ab9cd1cSSteven Whitehouse struct gfs2_holder i_gh; 17452ab9cd1cSSteven Whitehouse int error; 17462ab9cd1cSSteven Whitehouse int unlock = 0; 17472ab9cd1cSSteven Whitehouse 17482ab9cd1cSSteven Whitehouse 17492ab9cd1cSSteven Whitehouse ip = GFS2_I(inode); 17502ab9cd1cSSteven Whitehouse if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) { 175110556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 17522ab9cd1cSSteven Whitehouse return -ECHILD; 17532ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); 17542ab9cd1cSSteven Whitehouse if (error) 17552ab9cd1cSSteven Whitehouse return error; 17562ab9cd1cSSteven Whitehouse unlock = 1; 17572ab9cd1cSSteven Whitehouse } 17582ab9cd1cSSteven Whitehouse 17592ab9cd1cSSteven Whitehouse if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode)) 17602ab9cd1cSSteven Whitehouse error = -EACCES; 17612ab9cd1cSSteven Whitehouse else 17622830ba7fSAl Viro error = generic_permission(inode, mask); 17632ab9cd1cSSteven Whitehouse if (unlock) 17642ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&i_gh); 17652ab9cd1cSSteven Whitehouse 17662ab9cd1cSSteven Whitehouse return error; 17672ab9cd1cSSteven Whitehouse } 17682ab9cd1cSSteven Whitehouse 1769ab9bbda0SSteven Whitehouse static int __gfs2_setattr_simple(struct inode *inode, struct iattr *attr) 17702ab9cd1cSSteven Whitehouse { 17712ab9cd1cSSteven Whitehouse setattr_copy(inode, attr); 17722ab9cd1cSSteven Whitehouse mark_inode_dirty(inode); 17732ab9cd1cSSteven Whitehouse return 0; 17742ab9cd1cSSteven Whitehouse } 17752ab9cd1cSSteven Whitehouse 17762ab9cd1cSSteven Whitehouse /** 17772ab9cd1cSSteven Whitehouse * gfs2_setattr_simple - 17782ab9cd1cSSteven Whitehouse * @ip: 17792ab9cd1cSSteven Whitehouse * @attr: 17802ab9cd1cSSteven Whitehouse * 17812ab9cd1cSSteven Whitehouse * Returns: errno 17822ab9cd1cSSteven Whitehouse */ 17832ab9cd1cSSteven Whitehouse 1784ab9bbda0SSteven Whitehouse int gfs2_setattr_simple(struct inode *inode, struct iattr *attr) 17852ab9cd1cSSteven Whitehouse { 17862ab9cd1cSSteven Whitehouse int error; 17872ab9cd1cSSteven Whitehouse 17882ab9cd1cSSteven Whitehouse if (current->journal_info) 1789ab9bbda0SSteven Whitehouse return __gfs2_setattr_simple(inode, attr); 17902ab9cd1cSSteven Whitehouse 1791ab9bbda0SSteven Whitehouse error = gfs2_trans_begin(GFS2_SB(inode), RES_DINODE, 0); 17922ab9cd1cSSteven Whitehouse if (error) 17932ab9cd1cSSteven Whitehouse return error; 17942ab9cd1cSSteven Whitehouse 1795ab9bbda0SSteven Whitehouse error = __gfs2_setattr_simple(inode, attr); 1796ab9bbda0SSteven Whitehouse gfs2_trans_end(GFS2_SB(inode)); 17972ab9cd1cSSteven Whitehouse return error; 17982ab9cd1cSSteven Whitehouse } 17992ab9cd1cSSteven Whitehouse 18002ab9cd1cSSteven Whitehouse static int setattr_chown(struct inode *inode, struct iattr *attr) 18012ab9cd1cSSteven Whitehouse { 18022ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 18032ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 18047c06b5d6SEric W. Biederman kuid_t ouid, nuid; 18057c06b5d6SEric W. Biederman kgid_t ogid, ngid; 18062ab9cd1cSSteven Whitehouse int error; 1807b8fbf471SAbhi Das struct gfs2_alloc_parms ap; 18082ab9cd1cSSteven Whitehouse 18092ab9cd1cSSteven Whitehouse ouid = inode->i_uid; 18102ab9cd1cSSteven Whitehouse ogid = inode->i_gid; 18112ab9cd1cSSteven Whitehouse nuid = attr->ia_uid; 18122ab9cd1cSSteven Whitehouse ngid = attr->ia_gid; 18132ab9cd1cSSteven Whitehouse 18146b24c0d2SEric W. Biederman if (!(attr->ia_valid & ATTR_UID) || uid_eq(ouid, nuid)) 1815f4108a60SEric W. Biederman ouid = nuid = NO_UID_QUOTA_CHANGE; 18166b24c0d2SEric W. Biederman if (!(attr->ia_valid & ATTR_GID) || gid_eq(ogid, ngid)) 1817f4108a60SEric W. Biederman ogid = ngid = NO_GID_QUOTA_CHANGE; 18182ab9cd1cSSteven Whitehouse 1819b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ip); 182062e96cf8SBob Peterson if (error) 182162e96cf8SBob Peterson goto out; 182262e96cf8SBob Peterson 182362e96cf8SBob Peterson error = gfs2_rindex_update(sdp); 182462e96cf8SBob Peterson if (error) 182562e96cf8SBob Peterson goto out; 182662e96cf8SBob Peterson 182762e96cf8SBob Peterson error = gfs2_quota_lock(ip, nuid, ngid); 182862e96cf8SBob Peterson if (error) 182962e96cf8SBob Peterson goto out; 183062e96cf8SBob Peterson 1831b8fbf471SAbhi Das ap.target = gfs2_get_inode_blocks(&ip->i_inode); 1832b8fbf471SAbhi Das 18336b24c0d2SEric W. Biederman if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) || 18346b24c0d2SEric W. Biederman !gid_eq(ogid, NO_GID_QUOTA_CHANGE)) { 1835b8fbf471SAbhi Das error = gfs2_quota_check(ip, nuid, ngid, &ap); 18362ab9cd1cSSteven Whitehouse if (error) 18372ab9cd1cSSteven Whitehouse goto out_gunlock_q; 18382ab9cd1cSSteven Whitehouse } 18392ab9cd1cSSteven Whitehouse 18402ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0); 18412ab9cd1cSSteven Whitehouse if (error) 18422ab9cd1cSSteven Whitehouse goto out_gunlock_q; 18432ab9cd1cSSteven Whitehouse 1844ab9bbda0SSteven Whitehouse error = gfs2_setattr_simple(inode, attr); 18452ab9cd1cSSteven Whitehouse if (error) 18462ab9cd1cSSteven Whitehouse goto out_end_trans; 18472ab9cd1cSSteven Whitehouse 18486b24c0d2SEric W. Biederman if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) || 18496b24c0d2SEric W. Biederman !gid_eq(ogid, NO_GID_QUOTA_CHANGE)) { 185039a72580SAbhi Das gfs2_quota_change(ip, -(s64)ap.target, ouid, ogid); 1851b8fbf471SAbhi Das gfs2_quota_change(ip, ap.target, nuid, ngid); 18522ab9cd1cSSteven Whitehouse } 18532ab9cd1cSSteven Whitehouse 18542ab9cd1cSSteven Whitehouse out_end_trans: 18552ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 18562ab9cd1cSSteven Whitehouse out_gunlock_q: 18572ab9cd1cSSteven Whitehouse gfs2_quota_unlock(ip); 185862e96cf8SBob Peterson out: 18592ab9cd1cSSteven Whitehouse return error; 18602ab9cd1cSSteven Whitehouse } 18612ab9cd1cSSteven Whitehouse 18622ab9cd1cSSteven Whitehouse /** 18632ab9cd1cSSteven Whitehouse * gfs2_setattr - Change attributes on an inode 18642ab9cd1cSSteven Whitehouse * @dentry: The dentry which is changing 18652ab9cd1cSSteven Whitehouse * @attr: The structure describing the change 18662ab9cd1cSSteven Whitehouse * 18672ab9cd1cSSteven Whitehouse * The VFS layer wants to change one or more of an inodes attributes. Write 18682ab9cd1cSSteven Whitehouse * that change out to disk. 18692ab9cd1cSSteven Whitehouse * 18702ab9cd1cSSteven Whitehouse * Returns: errno 18712ab9cd1cSSteven Whitehouse */ 18722ab9cd1cSSteven Whitehouse 18732ab9cd1cSSteven Whitehouse static int gfs2_setattr(struct dentry *dentry, struct iattr *attr) 18742ab9cd1cSSteven Whitehouse { 18752b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 18762ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 18772ab9cd1cSSteven Whitehouse struct gfs2_holder i_gh; 18782ab9cd1cSSteven Whitehouse int error; 18792ab9cd1cSSteven Whitehouse 1880b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ip); 18810a305e49SBob Peterson if (error) 18820a305e49SBob Peterson return error; 18830a305e49SBob Peterson 18842ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); 18852ab9cd1cSSteven Whitehouse if (error) 18862ab9cd1cSSteven Whitehouse return error; 18872ab9cd1cSSteven Whitehouse 18882ab9cd1cSSteven Whitehouse error = -EPERM; 18892ab9cd1cSSteven Whitehouse if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) 18902ab9cd1cSSteven Whitehouse goto out; 18912ab9cd1cSSteven Whitehouse 18922ab9cd1cSSteven Whitehouse error = inode_change_ok(inode, attr); 18932ab9cd1cSSteven Whitehouse if (error) 18942ab9cd1cSSteven Whitehouse goto out; 18952ab9cd1cSSteven Whitehouse 18962ab9cd1cSSteven Whitehouse if (attr->ia_valid & ATTR_SIZE) 18972ab9cd1cSSteven Whitehouse error = gfs2_setattr_size(inode, attr->ia_size); 18982ab9cd1cSSteven Whitehouse else if (attr->ia_valid & (ATTR_UID | ATTR_GID)) 18992ab9cd1cSSteven Whitehouse error = setattr_chown(inode, attr); 1900e01580bfSChristoph Hellwig else { 1901ab9bbda0SSteven Whitehouse error = gfs2_setattr_simple(inode, attr); 1902e01580bfSChristoph Hellwig if (!error && attr->ia_valid & ATTR_MODE) 1903e01580bfSChristoph Hellwig error = posix_acl_chmod(inode, inode->i_mode); 1904e01580bfSChristoph Hellwig } 19052ab9cd1cSSteven Whitehouse 19062ab9cd1cSSteven Whitehouse out: 19072ab9cd1cSSteven Whitehouse if (!error) 19082ab9cd1cSSteven Whitehouse mark_inode_dirty(inode); 1909ab9bbda0SSteven Whitehouse gfs2_glock_dq_uninit(&i_gh); 19102ab9cd1cSSteven Whitehouse return error; 19112ab9cd1cSSteven Whitehouse } 19122ab9cd1cSSteven Whitehouse 19132ab9cd1cSSteven Whitehouse /** 19142ab9cd1cSSteven Whitehouse * gfs2_getattr - Read out an inode's attributes 19152ab9cd1cSSteven Whitehouse * @mnt: The vfsmount the inode is being accessed from 19162ab9cd1cSSteven Whitehouse * @dentry: The dentry to stat 19172ab9cd1cSSteven Whitehouse * @stat: The inode's stats 19182ab9cd1cSSteven Whitehouse * 19192ab9cd1cSSteven Whitehouse * This may be called from the VFS directly, or from within GFS2 with the 19202ab9cd1cSSteven Whitehouse * inode locked, so we look to see if the glock is already locked and only 19212ab9cd1cSSteven Whitehouse * lock the glock if its not already been done. Note that its the NFS 19222ab9cd1cSSteven Whitehouse * readdirplus operation which causes this to be called (from filldir) 19232ab9cd1cSSteven Whitehouse * with the glock already held. 19242ab9cd1cSSteven Whitehouse * 19252ab9cd1cSSteven Whitehouse * Returns: errno 19262ab9cd1cSSteven Whitehouse */ 19272ab9cd1cSSteven Whitehouse 19282ab9cd1cSSteven Whitehouse static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry, 19292ab9cd1cSSteven Whitehouse struct kstat *stat) 19302ab9cd1cSSteven Whitehouse { 19312b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 19322ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 19332ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 19342ab9cd1cSSteven Whitehouse int error; 19352ab9cd1cSSteven Whitehouse int unlock = 0; 19362ab9cd1cSSteven Whitehouse 19372ab9cd1cSSteven Whitehouse if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) { 19382ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); 19392ab9cd1cSSteven Whitehouse if (error) 19402ab9cd1cSSteven Whitehouse return error; 19412ab9cd1cSSteven Whitehouse unlock = 1; 19422ab9cd1cSSteven Whitehouse } 19432ab9cd1cSSteven Whitehouse 19442ab9cd1cSSteven Whitehouse generic_fillattr(inode, stat); 19452ab9cd1cSSteven Whitehouse if (unlock) 19462ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&gh); 19472ab9cd1cSSteven Whitehouse 19482ab9cd1cSSteven Whitehouse return 0; 19492ab9cd1cSSteven Whitehouse } 19502ab9cd1cSSteven Whitehouse 19512ab9cd1cSSteven Whitehouse static int gfs2_setxattr(struct dentry *dentry, const char *name, 19522ab9cd1cSSteven Whitehouse const void *data, size_t size, int flags) 19532ab9cd1cSSteven Whitehouse { 19542b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 19552ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 19562ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 19572ab9cd1cSSteven Whitehouse int ret; 19582ab9cd1cSSteven Whitehouse 19592ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); 19602ab9cd1cSSteven Whitehouse ret = gfs2_glock_nq(&gh); 19612ab9cd1cSSteven Whitehouse if (ret == 0) { 1962b54e9a0bSBob Peterson ret = gfs2_rsqa_alloc(ip); 1963645b2cccSSteven Whitehouse if (ret == 0) 19642ab9cd1cSSteven Whitehouse ret = generic_setxattr(dentry, name, data, size, flags); 19652ab9cd1cSSteven Whitehouse gfs2_glock_dq(&gh); 19662ab9cd1cSSteven Whitehouse } 19672ab9cd1cSSteven Whitehouse gfs2_holder_uninit(&gh); 19682ab9cd1cSSteven Whitehouse return ret; 19692ab9cd1cSSteven Whitehouse } 19702ab9cd1cSSteven Whitehouse 19712ab9cd1cSSteven Whitehouse static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name, 19722ab9cd1cSSteven Whitehouse void *data, size_t size) 19732ab9cd1cSSteven Whitehouse { 19742b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 19752ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 19762ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 19772ab9cd1cSSteven Whitehouse int ret; 19782ab9cd1cSSteven Whitehouse 19797bd9ee58SSteven Whitehouse /* For selinux during lookup */ 19807bd9ee58SSteven Whitehouse if (gfs2_glock_is_locked_by_me(ip->i_gl)) 19817bd9ee58SSteven Whitehouse return generic_getxattr(dentry, name, data, size); 19827bd9ee58SSteven Whitehouse 19832ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); 19842ab9cd1cSSteven Whitehouse ret = gfs2_glock_nq(&gh); 19852ab9cd1cSSteven Whitehouse if (ret == 0) { 19862ab9cd1cSSteven Whitehouse ret = generic_getxattr(dentry, name, data, size); 19872ab9cd1cSSteven Whitehouse gfs2_glock_dq(&gh); 19882ab9cd1cSSteven Whitehouse } 19892ab9cd1cSSteven Whitehouse gfs2_holder_uninit(&gh); 19902ab9cd1cSSteven Whitehouse return ret; 19912ab9cd1cSSteven Whitehouse } 19922ab9cd1cSSteven Whitehouse 19932ab9cd1cSSteven Whitehouse static int gfs2_removexattr(struct dentry *dentry, const char *name) 19942ab9cd1cSSteven Whitehouse { 19952b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 19962ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 19972ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 19982ab9cd1cSSteven Whitehouse int ret; 19992ab9cd1cSSteven Whitehouse 20002ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); 20012ab9cd1cSSteven Whitehouse ret = gfs2_glock_nq(&gh); 20022ab9cd1cSSteven Whitehouse if (ret == 0) { 2003b54e9a0bSBob Peterson ret = gfs2_rsqa_alloc(ip); 2004645b2cccSSteven Whitehouse if (ret == 0) 20052ab9cd1cSSteven Whitehouse ret = generic_removexattr(dentry, name); 20062ab9cd1cSSteven Whitehouse gfs2_glock_dq(&gh); 20072ab9cd1cSSteven Whitehouse } 20082ab9cd1cSSteven Whitehouse gfs2_holder_uninit(&gh); 20092ab9cd1cSSteven Whitehouse return ret; 20102ab9cd1cSSteven Whitehouse } 20112ab9cd1cSSteven Whitehouse 20122ab9cd1cSSteven Whitehouse static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 20132ab9cd1cSSteven Whitehouse u64 start, u64 len) 20142ab9cd1cSSteven Whitehouse { 20152ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 20162ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 20172ab9cd1cSSteven Whitehouse int ret; 20182ab9cd1cSSteven Whitehouse 20192ab9cd1cSSteven Whitehouse ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC); 20202ab9cd1cSSteven Whitehouse if (ret) 20212ab9cd1cSSteven Whitehouse return ret; 20222ab9cd1cSSteven Whitehouse 20235955102cSAl Viro inode_lock(inode); 20242ab9cd1cSSteven Whitehouse 20252ab9cd1cSSteven Whitehouse ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh); 20262ab9cd1cSSteven Whitehouse if (ret) 20272ab9cd1cSSteven Whitehouse goto out; 20282ab9cd1cSSteven Whitehouse 20292ab9cd1cSSteven Whitehouse if (gfs2_is_stuffed(ip)) { 20302ab9cd1cSSteven Whitehouse u64 phys = ip->i_no_addr << inode->i_blkbits; 20312ab9cd1cSSteven Whitehouse u64 size = i_size_read(inode); 20322ab9cd1cSSteven Whitehouse u32 flags = FIEMAP_EXTENT_LAST|FIEMAP_EXTENT_NOT_ALIGNED| 20332ab9cd1cSSteven Whitehouse FIEMAP_EXTENT_DATA_INLINE; 20342ab9cd1cSSteven Whitehouse phys += sizeof(struct gfs2_dinode); 20352ab9cd1cSSteven Whitehouse phys += start; 20362ab9cd1cSSteven Whitehouse if (start + len > size) 20372ab9cd1cSSteven Whitehouse len = size - start; 20382ab9cd1cSSteven Whitehouse if (start < size) 20392ab9cd1cSSteven Whitehouse ret = fiemap_fill_next_extent(fieinfo, start, phys, 20402ab9cd1cSSteven Whitehouse len, flags); 20412ab9cd1cSSteven Whitehouse if (ret == 1) 20422ab9cd1cSSteven Whitehouse ret = 0; 20432ab9cd1cSSteven Whitehouse } else { 20442ab9cd1cSSteven Whitehouse ret = __generic_block_fiemap(inode, fieinfo, start, len, 20452ab9cd1cSSteven Whitehouse gfs2_block_map); 20462ab9cd1cSSteven Whitehouse } 20472ab9cd1cSSteven Whitehouse 20482ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&gh); 20492ab9cd1cSSteven Whitehouse out: 20505955102cSAl Viro inode_unlock(inode); 20512ab9cd1cSSteven Whitehouse return ret; 20522ab9cd1cSSteven Whitehouse } 20532ab9cd1cSSteven Whitehouse 20542ab9cd1cSSteven Whitehouse const struct inode_operations gfs2_file_iops = { 20552ab9cd1cSSteven Whitehouse .permission = gfs2_permission, 20562ab9cd1cSSteven Whitehouse .setattr = gfs2_setattr, 20572ab9cd1cSSteven Whitehouse .getattr = gfs2_getattr, 20582ab9cd1cSSteven Whitehouse .setxattr = gfs2_setxattr, 20592ab9cd1cSSteven Whitehouse .getxattr = gfs2_getxattr, 20602ab9cd1cSSteven Whitehouse .listxattr = gfs2_listxattr, 20612ab9cd1cSSteven Whitehouse .removexattr = gfs2_removexattr, 20622ab9cd1cSSteven Whitehouse .fiemap = gfs2_fiemap, 20634e34e719SChristoph Hellwig .get_acl = gfs2_get_acl, 2064e01580bfSChristoph Hellwig .set_acl = gfs2_set_acl, 20652ab9cd1cSSteven Whitehouse }; 20662ab9cd1cSSteven Whitehouse 20672ab9cd1cSSteven Whitehouse const struct inode_operations gfs2_dir_iops = { 20682ab9cd1cSSteven Whitehouse .create = gfs2_create, 20692ab9cd1cSSteven Whitehouse .lookup = gfs2_lookup, 20702ab9cd1cSSteven Whitehouse .link = gfs2_link, 20712ab9cd1cSSteven Whitehouse .unlink = gfs2_unlink, 20722ab9cd1cSSteven Whitehouse .symlink = gfs2_symlink, 20732ab9cd1cSSteven Whitehouse .mkdir = gfs2_mkdir, 20742ab9cd1cSSteven Whitehouse .rmdir = gfs2_unlink, 20752ab9cd1cSSteven Whitehouse .mknod = gfs2_mknod, 2076a63b7bbcSBenjamin Marzinski .rename2 = gfs2_rename2, 20772ab9cd1cSSteven Whitehouse .permission = gfs2_permission, 20782ab9cd1cSSteven Whitehouse .setattr = gfs2_setattr, 20792ab9cd1cSSteven Whitehouse .getattr = gfs2_getattr, 20802ab9cd1cSSteven Whitehouse .setxattr = gfs2_setxattr, 20812ab9cd1cSSteven Whitehouse .getxattr = gfs2_getxattr, 20822ab9cd1cSSteven Whitehouse .listxattr = gfs2_listxattr, 20832ab9cd1cSSteven Whitehouse .removexattr = gfs2_removexattr, 20842ab9cd1cSSteven Whitehouse .fiemap = gfs2_fiemap, 20854e34e719SChristoph Hellwig .get_acl = gfs2_get_acl, 2086e01580bfSChristoph Hellwig .set_acl = gfs2_set_acl, 20876d4ade98SSteven Whitehouse .atomic_open = gfs2_atomic_open, 20882ab9cd1cSSteven Whitehouse }; 20892ab9cd1cSSteven Whitehouse 20902ab9cd1cSSteven Whitehouse const struct inode_operations gfs2_symlink_iops = { 20912ab9cd1cSSteven Whitehouse .readlink = generic_readlink, 20926b255391SAl Viro .get_link = gfs2_get_link, 20932ab9cd1cSSteven Whitehouse .permission = gfs2_permission, 20942ab9cd1cSSteven Whitehouse .setattr = gfs2_setattr, 20952ab9cd1cSSteven Whitehouse .getattr = gfs2_getattr, 20962ab9cd1cSSteven Whitehouse .setxattr = gfs2_setxattr, 20972ab9cd1cSSteven Whitehouse .getxattr = gfs2_getxattr, 20982ab9cd1cSSteven Whitehouse .listxattr = gfs2_listxattr, 20992ab9cd1cSSteven Whitehouse .removexattr = gfs2_removexattr, 21002ab9cd1cSSteven Whitehouse .fiemap = gfs2_fiemap, 21012ab9cd1cSSteven Whitehouse }; 21022ab9cd1cSSteven Whitehouse 2103