17336d0e6SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 22ab9cd1cSSteven Whitehouse /* 32ab9cd1cSSteven Whitehouse * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 4f2741d98SSteven Whitehouse * Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved. 52ab9cd1cSSteven Whitehouse */ 62ab9cd1cSSteven Whitehouse 72ab9cd1cSSteven Whitehouse #include <linux/slab.h> 82ab9cd1cSSteven Whitehouse #include <linux/spinlock.h> 92ab9cd1cSSteven Whitehouse #include <linux/completion.h> 102ab9cd1cSSteven Whitehouse #include <linux/buffer_head.h> 112ab9cd1cSSteven Whitehouse #include <linux/namei.h> 122ab9cd1cSSteven Whitehouse #include <linux/mm.h> 135b825c3aSIngo Molnar #include <linux/cred.h> 142ab9cd1cSSteven Whitehouse #include <linux/xattr.h> 152ab9cd1cSSteven Whitehouse #include <linux/posix_acl.h> 162ab9cd1cSSteven Whitehouse #include <linux/gfs2_ondisk.h> 172ab9cd1cSSteven Whitehouse #include <linux/crc32.h> 18aac1a55bSBob Peterson #include <linux/iomap.h> 192ab9cd1cSSteven Whitehouse #include <linux/security.h> 207c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 212ab9cd1cSSteven Whitehouse 222ab9cd1cSSteven Whitehouse #include "gfs2.h" 232ab9cd1cSSteven Whitehouse #include "incore.h" 242ab9cd1cSSteven Whitehouse #include "acl.h" 252ab9cd1cSSteven Whitehouse #include "bmap.h" 262ab9cd1cSSteven Whitehouse #include "dir.h" 272ab9cd1cSSteven Whitehouse #include "xattr.h" 282ab9cd1cSSteven Whitehouse #include "glock.h" 292ab9cd1cSSteven Whitehouse #include "inode.h" 302ab9cd1cSSteven Whitehouse #include "meta_io.h" 312ab9cd1cSSteven Whitehouse #include "quota.h" 322ab9cd1cSSteven Whitehouse #include "rgrp.h" 332ab9cd1cSSteven Whitehouse #include "trans.h" 342ab9cd1cSSteven Whitehouse #include "util.h" 352ab9cd1cSSteven Whitehouse #include "super.h" 362ab9cd1cSSteven Whitehouse #include "glops.h" 372ab9cd1cSSteven Whitehouse 38cda9dd42SAndreas Gruenbacher static int iget_test(struct inode *inode, void *opaque) 392ab9cd1cSSteven Whitehouse { 40cda9dd42SAndreas Gruenbacher u64 no_addr = *(u64 *)opaque; 41cda9dd42SAndreas Gruenbacher 42cda9dd42SAndreas Gruenbacher return GFS2_I(inode)->i_no_addr == no_addr; 43cda9dd42SAndreas Gruenbacher } 44cda9dd42SAndreas Gruenbacher 45cda9dd42SAndreas Gruenbacher static int iget_set(struct inode *inode, void *opaque) 46cda9dd42SAndreas Gruenbacher { 47cda9dd42SAndreas Gruenbacher u64 no_addr = *(u64 *)opaque; 48cda9dd42SAndreas Gruenbacher 49cda9dd42SAndreas Gruenbacher GFS2_I(inode)->i_no_addr = no_addr; 50cda9dd42SAndreas Gruenbacher inode->i_ino = no_addr; 51cda9dd42SAndreas Gruenbacher return 0; 52cda9dd42SAndreas Gruenbacher } 53cda9dd42SAndreas Gruenbacher 543ce37b2cSAndreas Gruenbacher static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr) 553ce37b2cSAndreas Gruenbacher { 563ce37b2cSAndreas Gruenbacher struct inode *inode; 573ce37b2cSAndreas Gruenbacher 583ce37b2cSAndreas Gruenbacher repeat: 59cda9dd42SAndreas Gruenbacher inode = iget5_locked(sb, no_addr, iget_test, iget_set, &no_addr); 603ce37b2cSAndreas Gruenbacher if (!inode) 613ce37b2cSAndreas Gruenbacher return inode; 623ce37b2cSAndreas Gruenbacher if (is_bad_inode(inode)) { 633ce37b2cSAndreas Gruenbacher iput(inode); 643ce37b2cSAndreas Gruenbacher goto repeat; 653ce37b2cSAndreas Gruenbacher } 663ce37b2cSAndreas Gruenbacher return inode; 672ab9cd1cSSteven Whitehouse } 682ab9cd1cSSteven Whitehouse 692ab9cd1cSSteven Whitehouse /** 702ab9cd1cSSteven Whitehouse * gfs2_set_iop - Sets inode operations 712ab9cd1cSSteven Whitehouse * @inode: The inode with correct i_mode filled in 722ab9cd1cSSteven Whitehouse * 732ab9cd1cSSteven Whitehouse * GFS2 lookup code fills in vfs inode contents based on info obtained 742ab9cd1cSSteven Whitehouse * from directory entry inside gfs2_inode_lookup(). 752ab9cd1cSSteven Whitehouse */ 762ab9cd1cSSteven Whitehouse 772ab9cd1cSSteven Whitehouse static void gfs2_set_iop(struct inode *inode) 782ab9cd1cSSteven Whitehouse { 792ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 802ab9cd1cSSteven Whitehouse umode_t mode = inode->i_mode; 812ab9cd1cSSteven Whitehouse 822ab9cd1cSSteven Whitehouse if (S_ISREG(mode)) { 832ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_file_iops; 842ab9cd1cSSteven Whitehouse if (gfs2_localflocks(sdp)) 852ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_file_fops_nolock; 862ab9cd1cSSteven Whitehouse else 872ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_file_fops; 882ab9cd1cSSteven Whitehouse } else if (S_ISDIR(mode)) { 892ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_dir_iops; 902ab9cd1cSSteven Whitehouse if (gfs2_localflocks(sdp)) 912ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_dir_fops_nolock; 922ab9cd1cSSteven Whitehouse else 932ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_dir_fops; 942ab9cd1cSSteven Whitehouse } else if (S_ISLNK(mode)) { 952ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_symlink_iops; 962ab9cd1cSSteven Whitehouse } else { 972ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_file_iops; 982ab9cd1cSSteven Whitehouse init_special_inode(inode, inode->i_mode, inode->i_rdev); 992ab9cd1cSSteven Whitehouse } 1002ab9cd1cSSteven Whitehouse } 1012ab9cd1cSSteven Whitehouse 1022ab9cd1cSSteven Whitehouse /** 1032ab9cd1cSSteven Whitehouse * gfs2_inode_lookup - Lookup an inode 1042ab9cd1cSSteven Whitehouse * @sb: The super block 1052ab9cd1cSSteven Whitehouse * @type: The type of the inode 1063ce37b2cSAndreas Gruenbacher * @no_addr: The inode number 1073ce37b2cSAndreas Gruenbacher * @no_formal_ino: The inode generation number 1083ce37b2cSAndreas Gruenbacher * @blktype: Requested block type (GFS2_BLKST_DINODE or GFS2_BLKST_UNLINKED; 10961b91cfdSAndreas Gruenbacher * GFS2_BLKST_FREE to indicate not to verify) 1103ce37b2cSAndreas Gruenbacher * 1113ce37b2cSAndreas Gruenbacher * If @type is DT_UNKNOWN, the inode type is fetched from disk. 1123ce37b2cSAndreas Gruenbacher * 1133ce37b2cSAndreas Gruenbacher * If @blktype is anything other than GFS2_BLKST_FREE (which is used as a 1143ce37b2cSAndreas Gruenbacher * placeholder because it doesn't otherwise make sense), the on-disk block type 1153ce37b2cSAndreas Gruenbacher * is verified to be @blktype. 1162ab9cd1cSSteven Whitehouse * 1172ab9cd1cSSteven Whitehouse * Returns: A VFS inode, or an error 1182ab9cd1cSSteven Whitehouse */ 1192ab9cd1cSSteven Whitehouse 1202ab9cd1cSSteven Whitehouse struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, 1213ce37b2cSAndreas Gruenbacher u64 no_addr, u64 no_formal_ino, 1223ce37b2cSAndreas Gruenbacher unsigned int blktype) 1232ab9cd1cSSteven Whitehouse { 1242ab9cd1cSSteven Whitehouse struct inode *inode; 1252ab9cd1cSSteven Whitehouse struct gfs2_inode *ip; 1262ab9cd1cSSteven Whitehouse struct gfs2_glock *io_gl = NULL; 1273ce37b2cSAndreas Gruenbacher struct gfs2_holder i_gh; 1282ab9cd1cSSteven Whitehouse int error; 1292ab9cd1cSSteven Whitehouse 1306df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&i_gh); 1313ce37b2cSAndreas Gruenbacher inode = gfs2_iget(sb, no_addr); 1322ab9cd1cSSteven Whitehouse if (!inode) 133ac3beb6aSSteven Whitehouse return ERR_PTR(-ENOMEM); 1342ab9cd1cSSteven Whitehouse 135e97321faSBob Peterson ip = GFS2_I(inode); 136e97321faSBob Peterson 1372ab9cd1cSSteven Whitehouse if (inode->i_state & I_NEW) { 1382ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 1392ab9cd1cSSteven Whitehouse 1402ab9cd1cSSteven Whitehouse error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); 1412ab9cd1cSSteven Whitehouse if (unlikely(error)) 1422ab9cd1cSSteven Whitehouse goto fail; 1434fd1a579SAndreas Gruenbacher flush_delayed_work(&ip->i_gl->gl_work); 1442ab9cd1cSSteven Whitehouse 1452ab9cd1cSSteven Whitehouse error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl); 1462ab9cd1cSSteven Whitehouse if (unlikely(error)) 147*40e7e86eSAndreas Gruenbacher goto fail; 1482ab9cd1cSSteven Whitehouse 1493ce37b2cSAndreas Gruenbacher if (type == DT_UNKNOWN || blktype != GFS2_BLKST_FREE) { 1503ce37b2cSAndreas Gruenbacher /* 1513ce37b2cSAndreas Gruenbacher * The GL_SKIP flag indicates to skip reading the inode 1523ce37b2cSAndreas Gruenbacher * block. We read the inode with gfs2_inode_refresh 1533ce37b2cSAndreas Gruenbacher * after possibly checking the block type. 1543ce37b2cSAndreas Gruenbacher */ 1553ce37b2cSAndreas Gruenbacher error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 1563ce37b2cSAndreas Gruenbacher GL_SKIP, &i_gh); 1573ce37b2cSAndreas Gruenbacher if (error) 158*40e7e86eSAndreas Gruenbacher goto fail; 1593ce37b2cSAndreas Gruenbacher 1603ce37b2cSAndreas Gruenbacher if (blktype != GFS2_BLKST_FREE) { 1613ce37b2cSAndreas Gruenbacher error = gfs2_check_blk_type(sdp, no_addr, 1623ce37b2cSAndreas Gruenbacher blktype); 1633ce37b2cSAndreas Gruenbacher if (error) 164*40e7e86eSAndreas Gruenbacher goto fail; 1653ce37b2cSAndreas Gruenbacher } 1663ce37b2cSAndreas Gruenbacher } 1673ce37b2cSAndreas Gruenbacher 1684d7c18c7SBob Peterson glock_set_object(ip->i_gl, ip); 1692ab9cd1cSSteven Whitehouse set_bit(GIF_INVALID, &ip->i_flags); 1702ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); 1712ab9cd1cSSteven Whitehouse if (unlikely(error)) 172*40e7e86eSAndreas Gruenbacher goto fail; 1734fd1a579SAndreas Gruenbacher glock_set_object(ip->i_iopen_gh.gh_gl, ip); 1742ab9cd1cSSteven Whitehouse gfs2_glock_put(io_gl); 1752ab9cd1cSSteven Whitehouse io_gl = NULL; 1762ab9cd1cSSteven Whitehouse 1772b0fb353SAndreas Gruenbacher /* Lowest possible timestamp; will be overwritten in gfs2_dinode_in. */ 1782b0fb353SAndreas Gruenbacher inode->i_atime.tv_sec = 1LL << (8 * sizeof(inode->i_atime.tv_sec) - 1); 1792b0fb353SAndreas Gruenbacher inode->i_atime.tv_nsec = 0; 1802b0fb353SAndreas Gruenbacher 1812ab9cd1cSSteven Whitehouse if (type == DT_UNKNOWN) { 1822ab9cd1cSSteven Whitehouse /* Inode glock must be locked already */ 1832ab9cd1cSSteven Whitehouse error = gfs2_inode_refresh(GFS2_I(inode)); 1842ab9cd1cSSteven Whitehouse if (error) 185*40e7e86eSAndreas Gruenbacher goto fail; 1862ab9cd1cSSteven Whitehouse } else { 1872b0fb353SAndreas Gruenbacher ip->i_no_formal_ino = no_formal_ino; 1882ab9cd1cSSteven Whitehouse inode->i_mode = DT2IF(type); 1892ab9cd1cSSteven Whitehouse } 1902ab9cd1cSSteven Whitehouse 1912ab9cd1cSSteven Whitehouse gfs2_set_iop(inode); 192332f51d7SAndreas Gruenbacher 1932ab9cd1cSSteven Whitehouse unlock_new_inode(inode); 1942ab9cd1cSSteven Whitehouse } 1952ab9cd1cSSteven Whitehouse 1966df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&i_gh)) 1973ce37b2cSAndreas Gruenbacher gfs2_glock_dq_uninit(&i_gh); 1982ab9cd1cSSteven Whitehouse return inode; 1992ab9cd1cSSteven Whitehouse 200*40e7e86eSAndreas Gruenbacher fail: 2012ab9cd1cSSteven Whitehouse if (io_gl) 2022ab9cd1cSSteven Whitehouse gfs2_glock_put(io_gl); 2036df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&i_gh)) 2043ce37b2cSAndreas Gruenbacher gfs2_glock_dq_uninit(&i_gh); 2052ab9cd1cSSteven Whitehouse iget_failed(inode); 2062ab9cd1cSSteven Whitehouse return ERR_PTR(error); 2072ab9cd1cSSteven Whitehouse } 2082ab9cd1cSSteven Whitehouse 2092ab9cd1cSSteven Whitehouse struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr, 2102ab9cd1cSSteven Whitehouse u64 *no_formal_ino, unsigned int blktype) 2112ab9cd1cSSteven Whitehouse { 2122ab9cd1cSSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 2133ce37b2cSAndreas Gruenbacher struct inode *inode; 2142ab9cd1cSSteven Whitehouse int error; 2152ab9cd1cSSteven Whitehouse 2163ce37b2cSAndreas Gruenbacher inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, 0, blktype); 2172ab9cd1cSSteven Whitehouse if (IS_ERR(inode)) 2183ce37b2cSAndreas Gruenbacher return inode; 2192ab9cd1cSSteven Whitehouse 2202ab9cd1cSSteven Whitehouse /* Two extra checks for NFS only */ 2212ab9cd1cSSteven Whitehouse if (no_formal_ino) { 2222ab9cd1cSSteven Whitehouse error = -ESTALE; 2232ab9cd1cSSteven Whitehouse if (GFS2_I(inode)->i_no_formal_ino != *no_formal_ino) 2242ab9cd1cSSteven Whitehouse goto fail_iput; 2252ab9cd1cSSteven Whitehouse 2262ab9cd1cSSteven Whitehouse error = -EIO; 2272ab9cd1cSSteven Whitehouse if (GFS2_I(inode)->i_diskflags & GFS2_DIF_SYSTEM) 2282ab9cd1cSSteven Whitehouse goto fail_iput; 2292ab9cd1cSSteven Whitehouse } 2303ce37b2cSAndreas Gruenbacher return inode; 2312ab9cd1cSSteven Whitehouse 2322ab9cd1cSSteven Whitehouse fail_iput: 2332ab9cd1cSSteven Whitehouse iput(inode); 2343ce37b2cSAndreas Gruenbacher return ERR_PTR(error); 2352ab9cd1cSSteven Whitehouse } 2362ab9cd1cSSteven Whitehouse 2372ab9cd1cSSteven Whitehouse 2382ab9cd1cSSteven Whitehouse struct inode *gfs2_lookup_simple(struct inode *dip, const char *name) 2392ab9cd1cSSteven Whitehouse { 2402ab9cd1cSSteven Whitehouse struct qstr qstr; 2412ab9cd1cSSteven Whitehouse struct inode *inode; 2422ab9cd1cSSteven Whitehouse gfs2_str2qstr(&qstr, name); 2432ab9cd1cSSteven Whitehouse inode = gfs2_lookupi(dip, &qstr, 1); 2442ab9cd1cSSteven Whitehouse /* gfs2_lookupi has inconsistent callers: vfs 2452ab9cd1cSSteven Whitehouse * related routines expect NULL for no entry found, 2462ab9cd1cSSteven Whitehouse * gfs2_lookup_simple callers expect ENOENT 2472ab9cd1cSSteven Whitehouse * and do not check for NULL. 2482ab9cd1cSSteven Whitehouse */ 2492ab9cd1cSSteven Whitehouse if (inode == NULL) 2502ab9cd1cSSteven Whitehouse return ERR_PTR(-ENOENT); 2512ab9cd1cSSteven Whitehouse else 2522ab9cd1cSSteven Whitehouse return inode; 2532ab9cd1cSSteven Whitehouse } 2542ab9cd1cSSteven Whitehouse 2552ab9cd1cSSteven Whitehouse 2562ab9cd1cSSteven Whitehouse /** 2572ab9cd1cSSteven Whitehouse * gfs2_lookupi - Look up a filename in a directory and return its inode 2582ab9cd1cSSteven Whitehouse * @d_gh: An initialized holder for the directory glock 2592ab9cd1cSSteven Whitehouse * @name: The name of the inode to look for 2602ab9cd1cSSteven Whitehouse * @is_root: If 1, ignore the caller's permissions 2612ab9cd1cSSteven Whitehouse * @i_gh: An uninitialized holder for the new inode glock 2622ab9cd1cSSteven Whitehouse * 2632ab9cd1cSSteven Whitehouse * This can be called via the VFS filldir function when NFS is doing 2642ab9cd1cSSteven Whitehouse * a readdirplus and the inode which its intending to stat isn't 2652ab9cd1cSSteven Whitehouse * already in cache. In this case we must not take the directory glock 2662ab9cd1cSSteven Whitehouse * again, since the readdir call will have already taken that lock. 2672ab9cd1cSSteven Whitehouse * 2682ab9cd1cSSteven Whitehouse * Returns: errno 2692ab9cd1cSSteven Whitehouse */ 2702ab9cd1cSSteven Whitehouse 2712ab9cd1cSSteven Whitehouse struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name, 2722ab9cd1cSSteven Whitehouse int is_root) 2732ab9cd1cSSteven Whitehouse { 2742ab9cd1cSSteven Whitehouse struct super_block *sb = dir->i_sb; 2752ab9cd1cSSteven Whitehouse struct gfs2_inode *dip = GFS2_I(dir); 2762ab9cd1cSSteven Whitehouse struct gfs2_holder d_gh; 2772ab9cd1cSSteven Whitehouse int error = 0; 2782ab9cd1cSSteven Whitehouse struct inode *inode = NULL; 2792ab9cd1cSSteven Whitehouse 2806df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&d_gh); 2812ab9cd1cSSteven Whitehouse if (!name->len || name->len > GFS2_FNAMESIZE) 2822ab9cd1cSSteven Whitehouse return ERR_PTR(-ENAMETOOLONG); 2832ab9cd1cSSteven Whitehouse 2842ab9cd1cSSteven Whitehouse if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) || 2852ab9cd1cSSteven Whitehouse (name->len == 2 && memcmp(name->name, "..", 2) == 0 && 2862b0143b5SDavid Howells dir == d_inode(sb->s_root))) { 2872ab9cd1cSSteven Whitehouse igrab(dir); 2882ab9cd1cSSteven Whitehouse return dir; 2892ab9cd1cSSteven Whitehouse } 2902ab9cd1cSSteven Whitehouse 2912ab9cd1cSSteven Whitehouse if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) { 2922ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh); 2932ab9cd1cSSteven Whitehouse if (error) 2942ab9cd1cSSteven Whitehouse return ERR_PTR(error); 2952ab9cd1cSSteven Whitehouse } 2962ab9cd1cSSteven Whitehouse 2972ab9cd1cSSteven Whitehouse if (!is_root) { 29810556cb2SAl Viro error = gfs2_permission(dir, MAY_EXEC); 2992ab9cd1cSSteven Whitehouse if (error) 3002ab9cd1cSSteven Whitehouse goto out; 3012ab9cd1cSSteven Whitehouse } 3022ab9cd1cSSteven Whitehouse 3035a00f3ccSSteven Whitehouse inode = gfs2_dir_search(dir, name, false); 3042ab9cd1cSSteven Whitehouse if (IS_ERR(inode)) 3052ab9cd1cSSteven Whitehouse error = PTR_ERR(inode); 3062ab9cd1cSSteven Whitehouse out: 3076df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&d_gh)) 3082ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&d_gh); 3092ab9cd1cSSteven Whitehouse if (error == -ENOENT) 3102ab9cd1cSSteven Whitehouse return NULL; 3112ab9cd1cSSteven Whitehouse return inode ? inode : ERR_PTR(error); 3122ab9cd1cSSteven Whitehouse } 3132ab9cd1cSSteven Whitehouse 3142ab9cd1cSSteven Whitehouse /** 3152ab9cd1cSSteven Whitehouse * create_ok - OK to create a new on-disk inode here? 3162ab9cd1cSSteven Whitehouse * @dip: Directory in which dinode is to be created 3172ab9cd1cSSteven Whitehouse * @name: Name of new dinode 3182ab9cd1cSSteven Whitehouse * @mode: 3192ab9cd1cSSteven Whitehouse * 3202ab9cd1cSSteven Whitehouse * Returns: errno 3212ab9cd1cSSteven Whitehouse */ 3222ab9cd1cSSteven Whitehouse 3232ab9cd1cSSteven Whitehouse static int create_ok(struct gfs2_inode *dip, const struct qstr *name, 324175a4eb7SAl Viro umode_t mode) 3252ab9cd1cSSteven Whitehouse { 3262ab9cd1cSSteven Whitehouse int error; 3272ab9cd1cSSteven Whitehouse 32810556cb2SAl Viro error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC); 3292ab9cd1cSSteven Whitehouse if (error) 3302ab9cd1cSSteven Whitehouse return error; 3312ab9cd1cSSteven Whitehouse 3322ab9cd1cSSteven Whitehouse /* Don't create entries in an unlinked directory */ 3332ab9cd1cSSteven Whitehouse if (!dip->i_inode.i_nlink) 3342ab9cd1cSSteven Whitehouse return -ENOENT; 3352ab9cd1cSSteven Whitehouse 3362ab9cd1cSSteven Whitehouse if (dip->i_entries == (u32)-1) 3372ab9cd1cSSteven Whitehouse return -EFBIG; 3382ab9cd1cSSteven Whitehouse if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1) 3392ab9cd1cSSteven Whitehouse return -EMLINK; 3402ab9cd1cSSteven Whitehouse 3412ab9cd1cSSteven Whitehouse return 0; 3422ab9cd1cSSteven Whitehouse } 3432ab9cd1cSSteven Whitehouse 344c9aecf73SSteven Whitehouse static void munge_mode_uid_gid(const struct gfs2_inode *dip, 345c9aecf73SSteven Whitehouse struct inode *inode) 3462ab9cd1cSSteven Whitehouse { 3472ab9cd1cSSteven Whitehouse if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir && 3486b24c0d2SEric W. Biederman (dip->i_inode.i_mode & S_ISUID) && 3496b24c0d2SEric W. Biederman !uid_eq(dip->i_inode.i_uid, GLOBAL_ROOT_UID)) { 350c9aecf73SSteven Whitehouse if (S_ISDIR(inode->i_mode)) 351c9aecf73SSteven Whitehouse inode->i_mode |= S_ISUID; 3526b24c0d2SEric W. Biederman else if (!uid_eq(dip->i_inode.i_uid, current_fsuid())) 353c9aecf73SSteven Whitehouse inode->i_mode &= ~07111; 354c9aecf73SSteven Whitehouse inode->i_uid = dip->i_inode.i_uid; 3552ab9cd1cSSteven Whitehouse } else 356c9aecf73SSteven Whitehouse inode->i_uid = current_fsuid(); 3572ab9cd1cSSteven Whitehouse 3582ab9cd1cSSteven Whitehouse if (dip->i_inode.i_mode & S_ISGID) { 359c9aecf73SSteven Whitehouse if (S_ISDIR(inode->i_mode)) 360c9aecf73SSteven Whitehouse inode->i_mode |= S_ISGID; 361c9aecf73SSteven Whitehouse inode->i_gid = dip->i_inode.i_gid; 3622ab9cd1cSSteven Whitehouse } else 363c9aecf73SSteven Whitehouse inode->i_gid = current_fsgid(); 3642ab9cd1cSSteven Whitehouse } 3652ab9cd1cSSteven Whitehouse 366b2c8b3eaSSteven Whitehouse static int alloc_dinode(struct gfs2_inode *ip, u32 flags, unsigned *dblocks) 3672ab9cd1cSSteven Whitehouse { 368c9aecf73SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 369b2c8b3eaSSteven Whitehouse struct gfs2_alloc_parms ap = { .target = *dblocks, .aflags = flags, }; 3702ab9cd1cSSteven Whitehouse int error; 3712ab9cd1cSSteven Whitehouse 372b8fbf471SAbhi Das error = gfs2_quota_lock_check(ip, &ap); 3732ab9cd1cSSteven Whitehouse if (error) 3742ab9cd1cSSteven Whitehouse goto out; 3752ab9cd1cSSteven Whitehouse 3767b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(ip, &ap); 377fd4b4e04SSteven Whitehouse if (error) 378fd4b4e04SSteven Whitehouse goto out_quota; 379fd4b4e04SSteven Whitehouse 380b2c8b3eaSSteven Whitehouse error = gfs2_trans_begin(sdp, (*dblocks * RES_RG_BIT) + RES_STATFS + RES_QUOTA, 0); 3812ab9cd1cSSteven Whitehouse if (error) 3822ab9cd1cSSteven Whitehouse goto out_ipreserv; 3832ab9cd1cSSteven Whitehouse 384b2c8b3eaSSteven Whitehouse error = gfs2_alloc_blocks(ip, &ip->i_no_addr, dblocks, 1, &ip->i_generation); 385c9aecf73SSteven Whitehouse ip->i_no_formal_ino = ip->i_generation; 386c9aecf73SSteven Whitehouse ip->i_inode.i_ino = ip->i_no_addr; 387c9aecf73SSteven Whitehouse ip->i_goal = ip->i_no_addr; 3882ab9cd1cSSteven Whitehouse 3892ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 3902ab9cd1cSSteven Whitehouse 3912ab9cd1cSSteven Whitehouse out_ipreserv: 392c9aecf73SSteven Whitehouse gfs2_inplace_release(ip); 393fd4b4e04SSteven Whitehouse out_quota: 394fd4b4e04SSteven Whitehouse gfs2_quota_unlock(ip); 3952ab9cd1cSSteven Whitehouse out: 3962ab9cd1cSSteven Whitehouse return error; 3972ab9cd1cSSteven Whitehouse } 3982ab9cd1cSSteven Whitehouse 399f2741d98SSteven Whitehouse static void gfs2_init_dir(struct buffer_head *dibh, 400f2741d98SSteven Whitehouse const struct gfs2_inode *parent) 401e2d0a13bSSteven Whitehouse { 402e2d0a13bSSteven Whitehouse struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data; 403e2d0a13bSSteven Whitehouse struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1); 404e2d0a13bSSteven Whitehouse 405e2d0a13bSSteven Whitehouse gfs2_qstr2dirent(&gfs2_qdot, GFS2_DIRENT_SIZE(gfs2_qdot.len), dent); 406e2d0a13bSSteven Whitehouse dent->de_inum = di->di_num; /* already GFS2 endian */ 407e2d0a13bSSteven Whitehouse dent->de_type = cpu_to_be16(DT_DIR); 408e2d0a13bSSteven Whitehouse 409e2d0a13bSSteven Whitehouse dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1)); 410e2d0a13bSSteven Whitehouse gfs2_qstr2dirent(&gfs2_qdotdot, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent); 411e2d0a13bSSteven Whitehouse gfs2_inum_out(parent, dent); 412e2d0a13bSSteven Whitehouse dent->de_type = cpu_to_be16(DT_DIR); 413e2d0a13bSSteven Whitehouse 414e2d0a13bSSteven Whitehouse } 415e2d0a13bSSteven Whitehouse 4162ab9cd1cSSteven Whitehouse /** 417b2c8b3eaSSteven Whitehouse * gfs2_init_xattr - Initialise an xattr block for a new inode 418b2c8b3eaSSteven Whitehouse * @ip: The inode in question 419b2c8b3eaSSteven Whitehouse * 420b2c8b3eaSSteven Whitehouse * This sets up an empty xattr block for a new inode, ready to 421b2c8b3eaSSteven Whitehouse * take any ACLs, LSM xattrs, etc. 422b2c8b3eaSSteven Whitehouse */ 423b2c8b3eaSSteven Whitehouse 424b2c8b3eaSSteven Whitehouse static void gfs2_init_xattr(struct gfs2_inode *ip) 425b2c8b3eaSSteven Whitehouse { 426b2c8b3eaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 427b2c8b3eaSSteven Whitehouse struct buffer_head *bh; 428b2c8b3eaSSteven Whitehouse struct gfs2_ea_header *ea; 429b2c8b3eaSSteven Whitehouse 430b2c8b3eaSSteven Whitehouse bh = gfs2_meta_new(ip->i_gl, ip->i_eattr); 431b2c8b3eaSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, bh); 432b2c8b3eaSSteven Whitehouse gfs2_metatype_set(bh, GFS2_METATYPE_EA, GFS2_FORMAT_EA); 433b2c8b3eaSSteven Whitehouse gfs2_buffer_clear_tail(bh, sizeof(struct gfs2_meta_header)); 434b2c8b3eaSSteven Whitehouse 435b2c8b3eaSSteven Whitehouse ea = GFS2_EA_BH2FIRST(bh); 436b2c8b3eaSSteven Whitehouse ea->ea_rec_len = cpu_to_be32(sdp->sd_jbsize); 437b2c8b3eaSSteven Whitehouse ea->ea_type = GFS2_EATYPE_UNUSED; 438b2c8b3eaSSteven Whitehouse ea->ea_flags = GFS2_EAFLAG_LAST; 439b2c8b3eaSSteven Whitehouse 440b2c8b3eaSSteven Whitehouse brelse(bh); 441b2c8b3eaSSteven Whitehouse } 442b2c8b3eaSSteven Whitehouse 443b2c8b3eaSSteven Whitehouse /** 4442ab9cd1cSSteven Whitehouse * init_dinode - Fill in a new dinode structure 445f2741d98SSteven Whitehouse * @dip: The directory this inode is being created in 446c9aecf73SSteven Whitehouse * @ip: The inode 447f2741d98SSteven Whitehouse * @symname: The symlink destination (if a symlink) 448f2741d98SSteven Whitehouse * @bhp: The buffer head (returned to caller) 4492ab9cd1cSSteven Whitehouse * 4502ab9cd1cSSteven Whitehouse */ 4512ab9cd1cSSteven Whitehouse 452c9aecf73SSteven Whitehouse static void init_dinode(struct gfs2_inode *dip, struct gfs2_inode *ip, 45379ba7480SSteven Whitehouse const char *symname) 4542ab9cd1cSSteven Whitehouse { 4552ab9cd1cSSteven Whitehouse struct gfs2_dinode *di; 4562ab9cd1cSSteven Whitehouse struct buffer_head *dibh; 4572ab9cd1cSSteven Whitehouse 458c9aecf73SSteven Whitehouse dibh = gfs2_meta_new(ip->i_gl, ip->i_no_addr); 459350a9b0aSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, dibh); 4602ab9cd1cSSteven Whitehouse di = (struct gfs2_dinode *)dibh->b_data; 46179ba7480SSteven Whitehouse gfs2_dinode_out(ip, di); 4622ab9cd1cSSteven Whitehouse 463c9aecf73SSteven Whitehouse di->di_major = cpu_to_be32(MAJOR(ip->i_inode.i_rdev)); 464c9aecf73SSteven Whitehouse di->di_minor = cpu_to_be32(MINOR(ip->i_inode.i_rdev)); 4652ab9cd1cSSteven Whitehouse di->__pad1 = 0; 4662ab9cd1cSSteven Whitehouse di->__pad2 = 0; 4672ab9cd1cSSteven Whitehouse di->__pad3 = 0; 4682ab9cd1cSSteven Whitehouse memset(&di->__pad4, 0, sizeof(di->__pad4)); 4692ab9cd1cSSteven Whitehouse memset(&di->di_reserved, 0, sizeof(di->di_reserved)); 47079ba7480SSteven Whitehouse gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode)); 4712ab9cd1cSSteven Whitehouse 472c9aecf73SSteven Whitehouse switch(ip->i_inode.i_mode & S_IFMT) { 473160b4026SSteven Whitehouse case S_IFDIR: 474e2d0a13bSSteven Whitehouse gfs2_init_dir(dibh, dip); 475160b4026SSteven Whitehouse break; 476160b4026SSteven Whitehouse case S_IFLNK: 477c9aecf73SSteven Whitehouse memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname, ip->i_inode.i_size); 478160b4026SSteven Whitehouse break; 479e2d0a13bSSteven Whitehouse } 480e2d0a13bSSteven Whitehouse 4812ab9cd1cSSteven Whitehouse set_buffer_uptodate(dibh); 48279ba7480SSteven Whitehouse brelse(dibh); 4832ab9cd1cSSteven Whitehouse } 4842ab9cd1cSSteven Whitehouse 485534cf9caSSteven Whitehouse /** 486534cf9caSSteven Whitehouse * gfs2_trans_da_blocks - Calculate number of blocks to link inode 487534cf9caSSteven Whitehouse * @dip: The directory we are linking into 488534cf9caSSteven Whitehouse * @da: The dir add information 489534cf9caSSteven Whitehouse * @nr_inodes: The number of inodes involved 490534cf9caSSteven Whitehouse * 491534cf9caSSteven Whitehouse * This calculate the number of blocks we need to reserve in a 492534cf9caSSteven Whitehouse * transaction to link @nr_inodes into a directory. In most cases 493534cf9caSSteven Whitehouse * @nr_inodes will be 2 (the directory plus the inode being linked in) 494534cf9caSSteven Whitehouse * but in case of rename, 4 may be required. 495534cf9caSSteven Whitehouse * 496534cf9caSSteven Whitehouse * Returns: Number of blocks 497534cf9caSSteven Whitehouse */ 498534cf9caSSteven Whitehouse 499534cf9caSSteven Whitehouse static unsigned gfs2_trans_da_blks(const struct gfs2_inode *dip, 500534cf9caSSteven Whitehouse const struct gfs2_diradd *da, 501534cf9caSSteven Whitehouse unsigned nr_inodes) 502534cf9caSSteven Whitehouse { 503534cf9caSSteven Whitehouse return da->nr_blocks + gfs2_rg_blocks(dip, da->nr_blocks) + 504534cf9caSSteven Whitehouse (nr_inodes * RES_DINODE) + RES_QUOTA + RES_STATFS; 505534cf9caSSteven Whitehouse } 506534cf9caSSteven Whitehouse 5072ab9cd1cSSteven Whitehouse static int link_dinode(struct gfs2_inode *dip, const struct qstr *name, 5083c1c0ae1SSteven Whitehouse struct gfs2_inode *ip, struct gfs2_diradd *da) 5092ab9cd1cSSteven Whitehouse { 5102ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); 5113c1c0ae1SSteven Whitehouse struct gfs2_alloc_parms ap = { .target = da->nr_blocks, }; 5122ab9cd1cSSteven Whitehouse int error; 5132ab9cd1cSSteven Whitehouse 5143c1c0ae1SSteven Whitehouse if (da->nr_blocks) { 515b8fbf471SAbhi Das error = gfs2_quota_lock_check(dip, &ap); 5162ab9cd1cSSteven Whitehouse if (error) 5172ab9cd1cSSteven Whitehouse goto fail_quota_locks; 5182ab9cd1cSSteven Whitehouse 5197b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(dip, &ap); 5202ab9cd1cSSteven Whitehouse if (error) 5212ab9cd1cSSteven Whitehouse goto fail_quota_locks; 5222ab9cd1cSSteven Whitehouse 523534cf9caSSteven Whitehouse error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(dip, da, 2), 0); 5242ab9cd1cSSteven Whitehouse if (error) 5252ab9cd1cSSteven Whitehouse goto fail_ipreserv; 5262ab9cd1cSSteven Whitehouse } else { 5272ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0); 5282ab9cd1cSSteven Whitehouse if (error) 5292ab9cd1cSSteven Whitehouse goto fail_quota_locks; 5302ab9cd1cSSteven Whitehouse } 5312ab9cd1cSSteven Whitehouse 5322b47dad8SSteven Whitehouse error = gfs2_dir_add(&dip->i_inode, name, ip, da); 5332ab9cd1cSSteven Whitehouse 5342ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 5352ab9cd1cSSteven Whitehouse fail_ipreserv: 5362ab9cd1cSSteven Whitehouse gfs2_inplace_release(dip); 5372ab9cd1cSSteven Whitehouse fail_quota_locks: 5382ab9cd1cSSteven Whitehouse gfs2_quota_unlock(dip); 5392ab9cd1cSSteven Whitehouse return error; 5402ab9cd1cSSteven Whitehouse } 5412ab9cd1cSSteven Whitehouse 54246cc1e5fSH Hartley Sweeten static int gfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array, 5439d8f13baSMimi Zohar void *fs_info) 5442ab9cd1cSSteven Whitehouse { 5459d8f13baSMimi Zohar const struct xattr *xattr; 5469d8f13baSMimi Zohar int err = 0; 5472ab9cd1cSSteven Whitehouse 5489d8f13baSMimi Zohar for (xattr = xattr_array; xattr->name != NULL; xattr++) { 5499d8f13baSMimi Zohar err = __gfs2_xattr_set(inode, xattr->name, xattr->value, 5509d8f13baSMimi Zohar xattr->value_len, 0, 5519d8f13baSMimi Zohar GFS2_EATYPE_SECURITY); 5529d8f13baSMimi Zohar if (err < 0) 5539d8f13baSMimi Zohar break; 5549d8f13baSMimi Zohar } 5552ab9cd1cSSteven Whitehouse return err; 5562ab9cd1cSSteven Whitehouse } 5572ab9cd1cSSteven Whitehouse 5582ab9cd1cSSteven Whitehouse /** 559f2741d98SSteven Whitehouse * gfs2_create_inode - Create a new inode 560f2741d98SSteven Whitehouse * @dir: The parent directory 561f2741d98SSteven Whitehouse * @dentry: The new dentry 5626d4ade98SSteven Whitehouse * @file: If non-NULL, the file which is being opened 563f2741d98SSteven Whitehouse * @mode: The permissions on the new inode 564f2741d98SSteven Whitehouse * @dev: For device nodes, this is the device number 565f2741d98SSteven Whitehouse * @symname: For symlinks, this is the link destination 566f2741d98SSteven Whitehouse * @size: The initial size of the inode (ignored for directories) 5672ab9cd1cSSteven Whitehouse * 568f2741d98SSteven Whitehouse * Returns: 0 on success, or error code 5692ab9cd1cSSteven Whitehouse */ 5702ab9cd1cSSteven Whitehouse 571f2741d98SSteven Whitehouse static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, 5726d4ade98SSteven Whitehouse struct file *file, 573175a4eb7SAl Viro umode_t mode, dev_t dev, const char *symname, 574b452a458SAl Viro unsigned int size, int excl) 5752ab9cd1cSSteven Whitehouse { 576f2741d98SSteven Whitehouse const struct qstr *name = &dentry->d_name; 577e01580bfSChristoph Hellwig struct posix_acl *default_acl, *acl; 578f2741d98SSteven Whitehouse struct gfs2_holder ghs[2]; 5792ab9cd1cSSteven Whitehouse struct inode *inode = NULL; 5808e2e0047SBob Peterson struct gfs2_inode *dip = GFS2_I(dir), *ip; 5812ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); 582a4923865SBob Peterson struct gfs2_glock *io_gl = NULL; 583783013c0SBob Peterson int error, free_vfs_inode = 1; 5849dbe9610SSteven Whitehouse u32 aflags = 0; 585b2c8b3eaSSteven Whitehouse unsigned blocks = 1; 58619aeb5a6SBob Peterson struct gfs2_diradd da = { .bh = NULL, .save_loc = 1, }; 5872ab9cd1cSSteven Whitehouse 5882ab9cd1cSSteven Whitehouse if (!name->len || name->len > GFS2_FNAMESIZE) 589f2741d98SSteven Whitehouse return -ENAMETOOLONG; 5902ab9cd1cSSteven Whitehouse 591b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(dip); 5920a305e49SBob Peterson if (error) 5930a305e49SBob Peterson return error; 5940a305e49SBob Peterson 595fd4b4e04SSteven Whitehouse error = gfs2_rindex_update(sdp); 596fd4b4e04SSteven Whitehouse if (error) 597fd4b4e04SSteven Whitehouse return error; 598fd4b4e04SSteven Whitehouse 599f2741d98SSteven Whitehouse error = gfs2_glock_nq_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 6002ab9cd1cSSteven Whitehouse if (error) 6012ab9cd1cSSteven Whitehouse goto fail; 602e0b62e21SAndreas Gruenbacher gfs2_holder_mark_uninitialized(ghs + 1); 6032ab9cd1cSSteven Whitehouse 6042ab9cd1cSSteven Whitehouse error = create_ok(dip, name, mode); 6052ab9cd1cSSteven Whitehouse if (error) 6062ab9cd1cSSteven Whitehouse goto fail_gunlock; 6072ab9cd1cSSteven Whitehouse 6085a00f3ccSSteven Whitehouse inode = gfs2_dir_search(dir, &dentry->d_name, !S_ISREG(mode) || excl); 6095a00f3ccSSteven Whitehouse error = PTR_ERR(inode); 6105a00f3ccSSteven Whitehouse if (!IS_ERR(inode)) { 611571a4b57SAl Viro if (S_ISDIR(inode->i_mode)) { 612571a4b57SAl Viro iput(inode); 613571a4b57SAl Viro inode = ERR_PTR(-EISDIR); 614571a4b57SAl Viro goto fail_gunlock; 615571a4b57SAl Viro } 61644bb31baSAl Viro d_instantiate(dentry, inode); 6176d4ade98SSteven Whitehouse error = 0; 6180d0d1107SMiklos Szeredi if (file) { 61944bb31baSAl Viro if (S_ISREG(inode->i_mode)) 620be12af3eSAl Viro error = finish_open(file, dentry, gfs2_open_common); 62144bb31baSAl Viro else 62244bb31baSAl Viro error = finish_no_open(file, NULL); 6235ca1db41SMiklos Szeredi } 6245a00f3ccSSteven Whitehouse gfs2_glock_dq_uninit(ghs); 6256d4ade98SSteven Whitehouse return error; 6265a00f3ccSSteven Whitehouse } else if (error != -ENOENT) { 6275a00f3ccSSteven Whitehouse goto fail_gunlock; 6285a00f3ccSSteven Whitehouse } 6295a00f3ccSSteven Whitehouse 6303c1c0ae1SSteven Whitehouse error = gfs2_diradd_alloc_required(dir, name, &da); 631fd4b4e04SSteven Whitehouse if (error < 0) 632fd4b4e04SSteven Whitehouse goto fail_gunlock; 633fd4b4e04SSteven Whitehouse 634c9aecf73SSteven Whitehouse inode = new_inode(sdp->sd_vfs); 635fd4b4e04SSteven Whitehouse error = -ENOMEM; 636fd4b4e04SSteven Whitehouse if (!inode) 637fd4b4e04SSteven Whitehouse goto fail_gunlock; 638fd4b4e04SSteven Whitehouse 639e01580bfSChristoph Hellwig error = posix_acl_create(dir, &mode, &default_acl, &acl); 640e01580bfSChristoph Hellwig if (error) 641783013c0SBob Peterson goto fail_gunlock; 642e01580bfSChristoph Hellwig 6438e2e0047SBob Peterson ip = GFS2_I(inode); 644b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ip); 645ff7f4cb4SSteven Whitehouse if (error) 646e01580bfSChristoph Hellwig goto fail_free_acls; 647c9aecf73SSteven Whitehouse 648c9aecf73SSteven Whitehouse inode->i_mode = mode; 64979ba7480SSteven Whitehouse set_nlink(inode, S_ISDIR(mode) ? 2 : 1); 650c9aecf73SSteven Whitehouse inode->i_rdev = dev; 651c9aecf73SSteven Whitehouse inode->i_size = size; 652078cd827SDeepa Dinamani inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); 653c9aecf73SSteven Whitehouse munge_mode_uid_gid(dip, inode); 65400a158beSAbhi Das check_and_update_goal(dip); 655c9aecf73SSteven Whitehouse ip->i_goal = dip->i_goal; 65628fb3027SSteven Whitehouse ip->i_diskflags = 0; 65728fb3027SSteven Whitehouse ip->i_eattr = 0; 65828fb3027SSteven Whitehouse ip->i_height = 0; 65928fb3027SSteven Whitehouse ip->i_depth = 0; 66028fb3027SSteven Whitehouse ip->i_entries = 0; 661cc963a11SBob Peterson ip->i_no_addr = 0; /* Temporarily zero until real addr is assigned */ 66228fb3027SSteven Whitehouse 66328fb3027SSteven Whitehouse switch(mode & S_IFMT) { 66428fb3027SSteven Whitehouse case S_IFREG: 66528fb3027SSteven Whitehouse if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) || 66628fb3027SSteven Whitehouse gfs2_tune_get(sdp, gt_new_files_jdata)) 66728fb3027SSteven Whitehouse ip->i_diskflags |= GFS2_DIF_JDATA; 66828fb3027SSteven Whitehouse gfs2_set_aops(inode); 66928fb3027SSteven Whitehouse break; 67028fb3027SSteven Whitehouse case S_IFDIR: 67128fb3027SSteven Whitehouse ip->i_diskflags |= (dip->i_diskflags & GFS2_DIF_INHERIT_JDATA); 67228fb3027SSteven Whitehouse ip->i_diskflags |= GFS2_DIF_JDATA; 67328fb3027SSteven Whitehouse ip->i_entries = 2; 67428fb3027SSteven Whitehouse break; 67528fb3027SSteven Whitehouse } 676acc546fdSAbhi Das 677acc546fdSAbhi Das /* Force SYSTEM flag on all files and subdirs of a SYSTEM directory */ 678acc546fdSAbhi Das if (dip->i_diskflags & GFS2_DIF_SYSTEM) 679acc546fdSAbhi Das ip->i_diskflags |= GFS2_DIF_SYSTEM; 680acc546fdSAbhi Das 68128fb3027SSteven Whitehouse gfs2_set_inode_flags(inode); 682c9aecf73SSteven Whitehouse 6832b0143b5SDavid Howells if ((GFS2_I(d_inode(sdp->sd_root_dir)) == dip) || 6849dbe9610SSteven Whitehouse (dip->i_diskflags & GFS2_DIF_TOPDIR)) 6859dbe9610SSteven Whitehouse aflags |= GFS2_AF_ORLOV; 6869dbe9610SSteven Whitehouse 687b2c8b3eaSSteven Whitehouse if (default_acl || acl) 688b2c8b3eaSSteven Whitehouse blocks++; 689b2c8b3eaSSteven Whitehouse 690b2c8b3eaSSteven Whitehouse error = alloc_dinode(ip, aflags, &blocks); 691c9aecf73SSteven Whitehouse if (error) 692c9aecf73SSteven Whitehouse goto fail_free_inode; 693c9aecf73SSteven Whitehouse 694b2c8b3eaSSteven Whitehouse gfs2_set_inode_blocks(inode, blocks); 695b2c8b3eaSSteven Whitehouse 696c9aecf73SSteven Whitehouse error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); 697c9aecf73SSteven Whitehouse if (error) 698c9aecf73SSteven Whitehouse goto fail_free_inode; 69998e5a91aSAndreas Gruenbacher flush_delayed_work(&ip->i_gl->gl_work); 7006f6597baSAndreas Gruenbacher glock_set_object(ip->i_gl, ip); 70198e5a91aSAndreas Gruenbacher 702c9aecf73SSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1); 703c9aecf73SSteven Whitehouse if (error) 704c9aecf73SSteven Whitehouse goto fail_free_inode; 705c9aecf73SSteven Whitehouse 706b2c8b3eaSSteven Whitehouse error = gfs2_trans_begin(sdp, blocks, 0); 707c9aecf73SSteven Whitehouse if (error) 7082c47c1beSBob Peterson goto fail_free_inode; 7090a305e49SBob Peterson 710b2c8b3eaSSteven Whitehouse if (blocks > 1) { 711b2c8b3eaSSteven Whitehouse ip->i_eattr = ip->i_no_addr + 1; 712b2c8b3eaSSteven Whitehouse gfs2_init_xattr(ip); 713b2c8b3eaSSteven Whitehouse } 71479ba7480SSteven Whitehouse init_dinode(dip, ip, symname); 715fd4b4e04SSteven Whitehouse gfs2_trans_end(sdp); 716fd4b4e04SSteven Whitehouse 717c9aecf73SSteven Whitehouse error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_iopen_glops, CREATE, &io_gl); 718c9aecf73SSteven Whitehouse if (error) 7192c47c1beSBob Peterson goto fail_free_inode; 720c9aecf73SSteven Whitehouse 721a4923865SBob Peterson BUG_ON(test_and_set_bit(GLF_INODE_CREATING, &io_gl->gl_flags)); 722a4923865SBob Peterson 723c9aecf73SSteven Whitehouse error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); 724c9aecf73SSteven Whitehouse if (error) 725c9aecf73SSteven Whitehouse goto fail_gunlock2; 726c9aecf73SSteven Whitehouse 7276f6597baSAndreas Gruenbacher glock_set_object(ip->i_iopen_gh.gh_gl, ip); 728c9aecf73SSteven Whitehouse gfs2_set_iop(inode); 729c9aecf73SSteven Whitehouse insert_inode_hash(inode); 730c9aecf73SSteven Whitehouse 731783013c0SBob Peterson free_vfs_inode = 0; /* After this point, the inode is no longer 732783013c0SBob Peterson considered free. Any failures need to undo 733783013c0SBob Peterson the gfs2 structures. */ 734e01580bfSChristoph Hellwig if (default_acl) { 7351a39ba99SAl Viro error = __gfs2_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); 7362ab9cd1cSSteven Whitehouse if (error) 737c9aecf73SSteven Whitehouse goto fail_gunlock3; 7386ff9b09eSAndreas Gruenbacher posix_acl_release(default_acl); 7396ff9b09eSAndreas Gruenbacher default_acl = NULL; 7406ff9b09eSAndreas Gruenbacher } 7416ff9b09eSAndreas Gruenbacher if (acl) { 7426ff9b09eSAndreas Gruenbacher error = __gfs2_set_acl(inode, acl, ACL_TYPE_ACCESS); 7436ff9b09eSAndreas Gruenbacher if (error) 7446ff9b09eSAndreas Gruenbacher goto fail_gunlock3; 7456ff9b09eSAndreas Gruenbacher posix_acl_release(acl); 7466ff9b09eSAndreas Gruenbacher acl = NULL; 7476ff9b09eSAndreas Gruenbacher } 7482ab9cd1cSSteven Whitehouse 749f45dc26dSBob Peterson error = security_inode_init_security(&ip->i_inode, &dip->i_inode, name, 750f45dc26dSBob Peterson &gfs2_initxattrs, NULL); 7512ab9cd1cSSteven Whitehouse if (error) 752c9aecf73SSteven Whitehouse goto fail_gunlock3; 7532ab9cd1cSSteven Whitehouse 7543c1c0ae1SSteven Whitehouse error = link_dinode(dip, name, ip, &da); 7552ab9cd1cSSteven Whitehouse if (error) 756c9aecf73SSteven Whitehouse goto fail_gunlock3; 7572ab9cd1cSSteven Whitehouse 75879ba7480SSteven Whitehouse mark_inode_dirty(inode); 7596d4ade98SSteven Whitehouse d_instantiate(dentry, inode); 7602c47c1beSBob Peterson /* After instantiate, errors should result in evict which will destroy 7612c47c1beSBob Peterson * both inode and iopen glocks properly. */ 762c5bf8fefSMiklos Szeredi if (file) { 76373a09dd9SAl Viro file->f_mode |= FMODE_CREATED; 764be12af3eSAl Viro error = finish_open(file, dentry, gfs2_open_common); 765c5bf8fefSMiklos Szeredi } 76628fb3027SSteven Whitehouse gfs2_glock_dq_uninit(ghs); 76728fb3027SSteven Whitehouse gfs2_glock_dq_uninit(ghs + 1); 768a4923865SBob Peterson clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags); 7692c47c1beSBob Peterson gfs2_glock_put(io_gl); 7706d4ade98SSteven Whitehouse return error; 7712ab9cd1cSSteven Whitehouse 772c9aecf73SSteven Whitehouse fail_gunlock3: 7739c1b2808SBob Peterson glock_clear_object(io_gl, ip); 774783013c0SBob Peterson gfs2_glock_dq_uninit(&ip->i_iopen_gh); 7752ab9cd1cSSteven Whitehouse fail_gunlock2: 776a4923865SBob Peterson clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags); 7772c47c1beSBob Peterson gfs2_glock_put(io_gl); 778c9aecf73SSteven Whitehouse fail_free_inode: 7799c1b2808SBob Peterson if (ip->i_gl) { 7809c1b2808SBob Peterson glock_clear_object(ip->i_gl, ip); 781c9aecf73SSteven Whitehouse gfs2_glock_put(ip->i_gl); 7829c1b2808SBob Peterson } 783b54e9a0bSBob Peterson gfs2_rsqa_delete(ip, NULL); 784e01580bfSChristoph Hellwig fail_free_acls: 785e01580bfSChristoph Hellwig posix_acl_release(default_acl); 786e01580bfSChristoph Hellwig posix_acl_release(acl); 7872ab9cd1cSSteven Whitehouse fail_gunlock: 7882b47dad8SSteven Whitehouse gfs2_dir_no_add(&da); 789f2741d98SSteven Whitehouse gfs2_glock_dq_uninit(ghs); 79015a798f7SKefeng Wang if (!IS_ERR_OR_NULL(inode)) { 79179ba7480SSteven Whitehouse clear_nlink(inode); 79205978803SAbhi Das if (!free_vfs_inode) 79379ba7480SSteven Whitehouse mark_inode_dirty(inode); 79405978803SAbhi Das set_bit(free_vfs_inode ? GIF_FREE_VFS_INODE : GIF_ALLOC_FAILED, 79505978803SAbhi Das &GFS2_I(inode)->i_flags); 79640ac218fSSteven Whitehouse iput(inode); 79740ac218fSSteven Whitehouse } 798e0b62e21SAndreas Gruenbacher if (gfs2_holder_initialized(ghs + 1)) 799e0b62e21SAndreas Gruenbacher gfs2_glock_dq_uninit(ghs + 1); 8002ab9cd1cSSteven Whitehouse fail: 801f2741d98SSteven Whitehouse return error; 8022ab9cd1cSSteven Whitehouse } 803f2741d98SSteven Whitehouse 8042ab9cd1cSSteven Whitehouse /** 8052ab9cd1cSSteven Whitehouse * gfs2_create - Create a file 8062ab9cd1cSSteven Whitehouse * @dir: The directory in which to create the file 8072ab9cd1cSSteven Whitehouse * @dentry: The dentry of the new file 8082ab9cd1cSSteven Whitehouse * @mode: The mode of the new file 8092ab9cd1cSSteven Whitehouse * 8102ab9cd1cSSteven Whitehouse * Returns: errno 8112ab9cd1cSSteven Whitehouse */ 8122ab9cd1cSSteven Whitehouse 8132ab9cd1cSSteven Whitehouse static int gfs2_create(struct inode *dir, struct dentry *dentry, 814ebfc3b49SAl Viro umode_t mode, bool excl) 8152ab9cd1cSSteven Whitehouse { 816b452a458SAl Viro return gfs2_create_inode(dir, dentry, NULL, S_IFREG | mode, 0, NULL, 0, excl); 8172ab9cd1cSSteven Whitehouse } 8182ab9cd1cSSteven Whitehouse 8192ab9cd1cSSteven Whitehouse /** 8206d4ade98SSteven Whitehouse * __gfs2_lookup - Look up a filename in a directory and return its inode 8212ab9cd1cSSteven Whitehouse * @dir: The directory inode 8222ab9cd1cSSteven Whitehouse * @dentry: The dentry of the new inode 8236d4ade98SSteven Whitehouse * @file: File to be opened 8242ab9cd1cSSteven Whitehouse * 8252ab9cd1cSSteven Whitehouse * 8262ab9cd1cSSteven Whitehouse * Returns: errno 8272ab9cd1cSSteven Whitehouse */ 8282ab9cd1cSSteven Whitehouse 8296d4ade98SSteven Whitehouse static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry, 830b452a458SAl Viro struct file *file) 8312ab9cd1cSSteven Whitehouse { 8326d4ade98SSteven Whitehouse struct inode *inode; 8336d4ade98SSteven Whitehouse struct dentry *d; 8342ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 8356d4ade98SSteven Whitehouse struct gfs2_glock *gl; 8362ab9cd1cSSteven Whitehouse int error; 8376d4ade98SSteven Whitehouse 8386d4ade98SSteven Whitehouse inode = gfs2_lookupi(dir, &dentry->d_name, 0); 8397b7a9115SBenjamin Coddington if (inode == NULL) { 8407b7a9115SBenjamin Coddington d_add(dentry, NULL); 8416d4ade98SSteven Whitehouse return NULL; 8427b7a9115SBenjamin Coddington } 8436d4ade98SSteven Whitehouse if (IS_ERR(inode)) 8446d4ade98SSteven Whitehouse return ERR_CAST(inode); 8456d4ade98SSteven Whitehouse 8466d4ade98SSteven Whitehouse gl = GFS2_I(inode)->i_gl; 8472ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); 8482ab9cd1cSSteven Whitehouse if (error) { 8492ab9cd1cSSteven Whitehouse iput(inode); 8502ab9cd1cSSteven Whitehouse return ERR_PTR(error); 8512ab9cd1cSSteven Whitehouse } 8526d4ade98SSteven Whitehouse 8536d4ade98SSteven Whitehouse d = d_splice_alias(inode, dentry); 854d57b9c9aSJ. Bruce Fields if (IS_ERR(d)) { 855d57b9c9aSJ. Bruce Fields gfs2_glock_dq_uninit(&gh); 856d57b9c9aSJ. Bruce Fields return d; 857d57b9c9aSJ. Bruce Fields } 8586d4ade98SSteven Whitehouse if (file && S_ISREG(inode->i_mode)) 859be12af3eSAl Viro error = finish_open(file, dentry, gfs2_open_common); 8606d4ade98SSteven Whitehouse 8612ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&gh); 8625ca1db41SMiklos Szeredi if (error) { 8635ca1db41SMiklos Szeredi dput(d); 8646d4ade98SSteven Whitehouse return ERR_PTR(error); 8655ca1db41SMiklos Szeredi } 8666d4ade98SSteven Whitehouse return d; 8672ab9cd1cSSteven Whitehouse } 8686d4ade98SSteven Whitehouse 8696d4ade98SSteven Whitehouse static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry, 8706d4ade98SSteven Whitehouse unsigned flags) 8716d4ade98SSteven Whitehouse { 872b452a458SAl Viro return __gfs2_lookup(dir, dentry, NULL); 8732ab9cd1cSSteven Whitehouse } 8742ab9cd1cSSteven Whitehouse 8752ab9cd1cSSteven Whitehouse /** 8762ab9cd1cSSteven Whitehouse * gfs2_link - Link to a file 8772ab9cd1cSSteven Whitehouse * @old_dentry: The inode to link 8782ab9cd1cSSteven Whitehouse * @dir: Add link to this directory 8792ab9cd1cSSteven Whitehouse * @dentry: The name of the link 8802ab9cd1cSSteven Whitehouse * 8812ab9cd1cSSteven Whitehouse * Link the inode in "old_dentry" into the directory "dir" with the 8822ab9cd1cSSteven Whitehouse * name in "dentry". 8832ab9cd1cSSteven Whitehouse * 8842ab9cd1cSSteven Whitehouse * Returns: errno 8852ab9cd1cSSteven Whitehouse */ 8862ab9cd1cSSteven Whitehouse 8872ab9cd1cSSteven Whitehouse static int gfs2_link(struct dentry *old_dentry, struct inode *dir, 8882ab9cd1cSSteven Whitehouse struct dentry *dentry) 8892ab9cd1cSSteven Whitehouse { 8902ab9cd1cSSteven Whitehouse struct gfs2_inode *dip = GFS2_I(dir); 8912ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 8922b0143b5SDavid Howells struct inode *inode = d_inode(old_dentry); 8932ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 8942ab9cd1cSSteven Whitehouse struct gfs2_holder ghs[2]; 8952ab9cd1cSSteven Whitehouse struct buffer_head *dibh; 89619aeb5a6SBob Peterson struct gfs2_diradd da = { .bh = NULL, .save_loc = 1, }; 8972ab9cd1cSSteven Whitehouse int error; 8982ab9cd1cSSteven Whitehouse 8992ab9cd1cSSteven Whitehouse if (S_ISDIR(inode->i_mode)) 9002ab9cd1cSSteven Whitehouse return -EPERM; 9012ab9cd1cSSteven Whitehouse 902b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(dip); 9030a305e49SBob Peterson if (error) 9040a305e49SBob Peterson return error; 9050a305e49SBob Peterson 9062ab9cd1cSSteven Whitehouse gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 9072ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); 9082ab9cd1cSSteven Whitehouse 9092ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs); /* parent */ 9102ab9cd1cSSteven Whitehouse if (error) 9112ab9cd1cSSteven Whitehouse goto out_parent; 9122ab9cd1cSSteven Whitehouse 9132ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + 1); /* child */ 9142ab9cd1cSSteven Whitehouse if (error) 9152ab9cd1cSSteven Whitehouse goto out_child; 9162ab9cd1cSSteven Whitehouse 9172ab9cd1cSSteven Whitehouse error = -ENOENT; 9182ab9cd1cSSteven Whitehouse if (inode->i_nlink == 0) 9192ab9cd1cSSteven Whitehouse goto out_gunlock; 9202ab9cd1cSSteven Whitehouse 92110556cb2SAl Viro error = gfs2_permission(dir, MAY_WRITE | MAY_EXEC); 9222ab9cd1cSSteven Whitehouse if (error) 9232ab9cd1cSSteven Whitehouse goto out_gunlock; 9242ab9cd1cSSteven Whitehouse 9252ab9cd1cSSteven Whitehouse error = gfs2_dir_check(dir, &dentry->d_name, NULL); 9262ab9cd1cSSteven Whitehouse switch (error) { 9272ab9cd1cSSteven Whitehouse case -ENOENT: 9282ab9cd1cSSteven Whitehouse break; 9292ab9cd1cSSteven Whitehouse case 0: 9302ab9cd1cSSteven Whitehouse error = -EEXIST; 9312ab9cd1cSSteven Whitehouse default: 9322ab9cd1cSSteven Whitehouse goto out_gunlock; 9332ab9cd1cSSteven Whitehouse } 9342ab9cd1cSSteven Whitehouse 9352ab9cd1cSSteven Whitehouse error = -EINVAL; 9362ab9cd1cSSteven Whitehouse if (!dip->i_inode.i_nlink) 9372ab9cd1cSSteven Whitehouse goto out_gunlock; 9382ab9cd1cSSteven Whitehouse error = -EFBIG; 9392ab9cd1cSSteven Whitehouse if (dip->i_entries == (u32)-1) 9402ab9cd1cSSteven Whitehouse goto out_gunlock; 9412ab9cd1cSSteven Whitehouse error = -EPERM; 9422ab9cd1cSSteven Whitehouse if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) 9432ab9cd1cSSteven Whitehouse goto out_gunlock; 9442ab9cd1cSSteven Whitehouse error = -EINVAL; 9452ab9cd1cSSteven Whitehouse if (!ip->i_inode.i_nlink) 9462ab9cd1cSSteven Whitehouse goto out_gunlock; 9472ab9cd1cSSteven Whitehouse error = -EMLINK; 9482ab9cd1cSSteven Whitehouse if (ip->i_inode.i_nlink == (u32)-1) 9492ab9cd1cSSteven Whitehouse goto out_gunlock; 9502ab9cd1cSSteven Whitehouse 9513c1c0ae1SSteven Whitehouse error = gfs2_diradd_alloc_required(dir, &dentry->d_name, &da); 9522ab9cd1cSSteven Whitehouse if (error < 0) 9532ab9cd1cSSteven Whitehouse goto out_gunlock; 9542ab9cd1cSSteven Whitehouse 9553c1c0ae1SSteven Whitehouse if (da.nr_blocks) { 9563c1c0ae1SSteven Whitehouse struct gfs2_alloc_parms ap = { .target = da.nr_blocks, }; 957b8fbf471SAbhi Das error = gfs2_quota_lock_check(dip, &ap); 9582ab9cd1cSSteven Whitehouse if (error) 9595407e242SBob Peterson goto out_gunlock; 9602ab9cd1cSSteven Whitehouse 9617b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(dip, &ap); 9622ab9cd1cSSteven Whitehouse if (error) 9632ab9cd1cSSteven Whitehouse goto out_gunlock_q; 9642ab9cd1cSSteven Whitehouse 965534cf9caSSteven Whitehouse error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(dip, &da, 2), 0); 9662ab9cd1cSSteven Whitehouse if (error) 9672ab9cd1cSSteven Whitehouse goto out_ipres; 9682ab9cd1cSSteven Whitehouse } else { 9692ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0); 9702ab9cd1cSSteven Whitehouse if (error) 9712ab9cd1cSSteven Whitehouse goto out_ipres; 9722ab9cd1cSSteven Whitehouse } 9732ab9cd1cSSteven Whitehouse 9742ab9cd1cSSteven Whitehouse error = gfs2_meta_inode_buffer(ip, &dibh); 9752ab9cd1cSSteven Whitehouse if (error) 9762ab9cd1cSSteven Whitehouse goto out_end_trans; 9772ab9cd1cSSteven Whitehouse 9782b47dad8SSteven Whitehouse error = gfs2_dir_add(dir, &dentry->d_name, ip, &da); 9792ab9cd1cSSteven Whitehouse if (error) 9802ab9cd1cSSteven Whitehouse goto out_brelse; 9812ab9cd1cSSteven Whitehouse 982350a9b0aSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, dibh); 9832ab9cd1cSSteven Whitehouse inc_nlink(&ip->i_inode); 984078cd827SDeepa Dinamani ip->i_inode.i_ctime = current_time(&ip->i_inode); 985ab9bbda0SSteven Whitehouse ihold(inode); 986ab9bbda0SSteven Whitehouse d_instantiate(dentry, inode); 987ab9bbda0SSteven Whitehouse mark_inode_dirty(inode); 9882ab9cd1cSSteven Whitehouse 9892ab9cd1cSSteven Whitehouse out_brelse: 9902ab9cd1cSSteven Whitehouse brelse(dibh); 9912ab9cd1cSSteven Whitehouse out_end_trans: 9922ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 9932ab9cd1cSSteven Whitehouse out_ipres: 9943c1c0ae1SSteven Whitehouse if (da.nr_blocks) 9952ab9cd1cSSteven Whitehouse gfs2_inplace_release(dip); 9962ab9cd1cSSteven Whitehouse out_gunlock_q: 9973c1c0ae1SSteven Whitehouse if (da.nr_blocks) 9982ab9cd1cSSteven Whitehouse gfs2_quota_unlock(dip); 9992ab9cd1cSSteven Whitehouse out_gunlock: 10002b47dad8SSteven Whitehouse gfs2_dir_no_add(&da); 10012ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + 1); 10022ab9cd1cSSteven Whitehouse out_child: 10032ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs); 10042ab9cd1cSSteven Whitehouse out_parent: 10052ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs); 10062ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs + 1); 10072ab9cd1cSSteven Whitehouse return error; 10082ab9cd1cSSteven Whitehouse } 10092ab9cd1cSSteven Whitehouse 10102ab9cd1cSSteven Whitehouse /* 10112ab9cd1cSSteven Whitehouse * gfs2_unlink_ok - check to see that a inode is still in a directory 10122ab9cd1cSSteven Whitehouse * @dip: the directory 10132ab9cd1cSSteven Whitehouse * @name: the name of the file 10142ab9cd1cSSteven Whitehouse * @ip: the inode 10152ab9cd1cSSteven Whitehouse * 10162ab9cd1cSSteven Whitehouse * Assumes that the lock on (at least) @dip is held. 10172ab9cd1cSSteven Whitehouse * 10182ab9cd1cSSteven Whitehouse * Returns: 0 if the parent/child relationship is correct, errno if it isn't 10192ab9cd1cSSteven Whitehouse */ 10202ab9cd1cSSteven Whitehouse 10212ab9cd1cSSteven Whitehouse static int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name, 10222ab9cd1cSSteven Whitehouse const struct gfs2_inode *ip) 10232ab9cd1cSSteven Whitehouse { 10242ab9cd1cSSteven Whitehouse int error; 10252ab9cd1cSSteven Whitehouse 10262ab9cd1cSSteven Whitehouse if (IS_IMMUTABLE(&ip->i_inode) || IS_APPEND(&ip->i_inode)) 10272ab9cd1cSSteven Whitehouse return -EPERM; 10282ab9cd1cSSteven Whitehouse 10292ab9cd1cSSteven Whitehouse if ((dip->i_inode.i_mode & S_ISVTX) && 10306b24c0d2SEric W. Biederman !uid_eq(dip->i_inode.i_uid, current_fsuid()) && 10316b24c0d2SEric W. Biederman !uid_eq(ip->i_inode.i_uid, current_fsuid()) && !capable(CAP_FOWNER)) 10322ab9cd1cSSteven Whitehouse return -EPERM; 10332ab9cd1cSSteven Whitehouse 10342ab9cd1cSSteven Whitehouse if (IS_APPEND(&dip->i_inode)) 10352ab9cd1cSSteven Whitehouse return -EPERM; 10362ab9cd1cSSteven Whitehouse 103710556cb2SAl Viro error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC); 10382ab9cd1cSSteven Whitehouse if (error) 10392ab9cd1cSSteven Whitehouse return error; 10402ab9cd1cSSteven Whitehouse 104137975f15SFabian Frederick return gfs2_dir_check(&dip->i_inode, name, ip); 10422ab9cd1cSSteven Whitehouse } 10432ab9cd1cSSteven Whitehouse 10442ab9cd1cSSteven Whitehouse /** 10452ab9cd1cSSteven Whitehouse * gfs2_unlink_inode - Removes an inode from its parent dir and unlinks it 10462ab9cd1cSSteven Whitehouse * @dip: The parent directory 10472ab9cd1cSSteven Whitehouse * @name: The name of the entry in the parent directory 10482ab9cd1cSSteven Whitehouse * @inode: The inode to be removed 10492ab9cd1cSSteven Whitehouse * 10502ab9cd1cSSteven Whitehouse * Called with all the locks and in a transaction. This will only be 10512ab9cd1cSSteven Whitehouse * called for a directory after it has been checked to ensure it is empty. 10522ab9cd1cSSteven Whitehouse * 10532ab9cd1cSSteven Whitehouse * Returns: 0 on success, or an error 10542ab9cd1cSSteven Whitehouse */ 10552ab9cd1cSSteven Whitehouse 10562ab9cd1cSSteven Whitehouse static int gfs2_unlink_inode(struct gfs2_inode *dip, 10574327a9bfSBob Peterson const struct dentry *dentry) 10582ab9cd1cSSteven Whitehouse { 10592b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 10602ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 10612ab9cd1cSSteven Whitehouse int error; 10622ab9cd1cSSteven Whitehouse 10632ab9cd1cSSteven Whitehouse error = gfs2_dir_del(dip, dentry); 10642ab9cd1cSSteven Whitehouse if (error) 10652ab9cd1cSSteven Whitehouse return error; 10662ab9cd1cSSteven Whitehouse 10672ab9cd1cSSteven Whitehouse ip->i_entries = 0; 1068078cd827SDeepa Dinamani inode->i_ctime = current_time(inode); 10692ab9cd1cSSteven Whitehouse if (S_ISDIR(inode->i_mode)) 10702ab9cd1cSSteven Whitehouse clear_nlink(inode); 10712ab9cd1cSSteven Whitehouse else 10722ab9cd1cSSteven Whitehouse drop_nlink(inode); 10732ab9cd1cSSteven Whitehouse mark_inode_dirty(inode); 10742ab9cd1cSSteven Whitehouse if (inode->i_nlink == 0) 10752ab9cd1cSSteven Whitehouse gfs2_unlink_di(inode); 10762ab9cd1cSSteven Whitehouse return 0; 10772ab9cd1cSSteven Whitehouse } 10782ab9cd1cSSteven Whitehouse 10792ab9cd1cSSteven Whitehouse 10802ab9cd1cSSteven Whitehouse /** 10812ab9cd1cSSteven Whitehouse * gfs2_unlink - Unlink an inode (this does rmdir as well) 10822ab9cd1cSSteven Whitehouse * @dir: The inode of the directory containing the inode to unlink 10832ab9cd1cSSteven Whitehouse * @dentry: The file itself 10842ab9cd1cSSteven Whitehouse * 10852ab9cd1cSSteven Whitehouse * This routine uses the type of the inode as a flag to figure out 10862ab9cd1cSSteven Whitehouse * whether this is an unlink or an rmdir. 10872ab9cd1cSSteven Whitehouse * 10882ab9cd1cSSteven Whitehouse * Returns: errno 10892ab9cd1cSSteven Whitehouse */ 10902ab9cd1cSSteven Whitehouse 10912ab9cd1cSSteven Whitehouse static int gfs2_unlink(struct inode *dir, struct dentry *dentry) 10922ab9cd1cSSteven Whitehouse { 10932ab9cd1cSSteven Whitehouse struct gfs2_inode *dip = GFS2_I(dir); 10942ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 10952b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 10962ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 10972ab9cd1cSSteven Whitehouse struct gfs2_holder ghs[3]; 10982ab9cd1cSSteven Whitehouse struct gfs2_rgrpd *rgd; 10995e2f7d61SBob Peterson int error; 11005e2f7d61SBob Peterson 11015e2f7d61SBob Peterson error = gfs2_rindex_update(sdp); 11025e2f7d61SBob Peterson if (error) 11035e2f7d61SBob Peterson return error; 11045e2f7d61SBob Peterson 11055e2f7d61SBob Peterson error = -EROFS; 11062ab9cd1cSSteven Whitehouse 11072ab9cd1cSSteven Whitehouse gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 11082ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); 11092ab9cd1cSSteven Whitehouse 111066fc061bSSteven Whitehouse rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1); 1111a365fbf3SSteven Whitehouse if (!rgd) 111287654896SSteven Whitehouse goto out_inodes; 1113a365fbf3SSteven Whitehouse 11142ab9cd1cSSteven Whitehouse gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2); 11152ab9cd1cSSteven Whitehouse 11162ab9cd1cSSteven Whitehouse 11172ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs); /* parent */ 11182ab9cd1cSSteven Whitehouse if (error) 11192ab9cd1cSSteven Whitehouse goto out_parent; 11202ab9cd1cSSteven Whitehouse 11212ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + 1); /* child */ 11222ab9cd1cSSteven Whitehouse if (error) 11232ab9cd1cSSteven Whitehouse goto out_child; 11242ab9cd1cSSteven Whitehouse 11252ab9cd1cSSteven Whitehouse error = -ENOENT; 11262ab9cd1cSSteven Whitehouse if (inode->i_nlink == 0) 11272ab9cd1cSSteven Whitehouse goto out_rgrp; 11282ab9cd1cSSteven Whitehouse 11292ab9cd1cSSteven Whitehouse if (S_ISDIR(inode->i_mode)) { 11302ab9cd1cSSteven Whitehouse error = -ENOTEMPTY; 11312ab9cd1cSSteven Whitehouse if (ip->i_entries > 2 || inode->i_nlink > 2) 11322ab9cd1cSSteven Whitehouse goto out_rgrp; 11332ab9cd1cSSteven Whitehouse } 11342ab9cd1cSSteven Whitehouse 11352ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + 2); /* rgrp */ 11362ab9cd1cSSteven Whitehouse if (error) 11372ab9cd1cSSteven Whitehouse goto out_rgrp; 11382ab9cd1cSSteven Whitehouse 11392ab9cd1cSSteven Whitehouse error = gfs2_unlink_ok(dip, &dentry->d_name, ip); 11402ab9cd1cSSteven Whitehouse if (error) 11412ab9cd1cSSteven Whitehouse goto out_gunlock; 11422ab9cd1cSSteven Whitehouse 11432ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, 2*RES_DINODE + 3*RES_LEAF + RES_RG_BIT, 0); 11442ab9cd1cSSteven Whitehouse if (error) 11452eb5909dSBob Peterson goto out_gunlock; 11462ab9cd1cSSteven Whitehouse 11474327a9bfSBob Peterson error = gfs2_unlink_inode(dip, dentry); 11482ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 11492eb5909dSBob Peterson 11502ab9cd1cSSteven Whitehouse out_gunlock: 11512ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + 2); 11522ab9cd1cSSteven Whitehouse out_rgrp: 11532ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + 1); 11542ab9cd1cSSteven Whitehouse out_child: 11552ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs); 11562ab9cd1cSSteven Whitehouse out_parent: 115787654896SSteven Whitehouse gfs2_holder_uninit(ghs + 2); 115887654896SSteven Whitehouse out_inodes: 115987654896SSteven Whitehouse gfs2_holder_uninit(ghs + 1); 11602ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs); 11612ab9cd1cSSteven Whitehouse return error; 11622ab9cd1cSSteven Whitehouse } 11632ab9cd1cSSteven Whitehouse 11642ab9cd1cSSteven Whitehouse /** 11652ab9cd1cSSteven Whitehouse * gfs2_symlink - Create a symlink 11662ab9cd1cSSteven Whitehouse * @dir: The directory to create the symlink in 11672ab9cd1cSSteven Whitehouse * @dentry: The dentry to put the symlink in 11682ab9cd1cSSteven Whitehouse * @symname: The thing which the link points to 11692ab9cd1cSSteven Whitehouse * 11702ab9cd1cSSteven Whitehouse * Returns: errno 11712ab9cd1cSSteven Whitehouse */ 11722ab9cd1cSSteven Whitehouse 11732ab9cd1cSSteven Whitehouse static int gfs2_symlink(struct inode *dir, struct dentry *dentry, 11742ab9cd1cSSteven Whitehouse const char *symname) 11752ab9cd1cSSteven Whitehouse { 1176160b4026SSteven Whitehouse unsigned int size; 11772ab9cd1cSSteven Whitehouse 11782ab9cd1cSSteven Whitehouse size = strlen(symname); 1179235628c5SAndreas Gruenbacher if (size >= gfs2_max_stuffed_size(GFS2_I(dir))) 11802ab9cd1cSSteven Whitehouse return -ENAMETOOLONG; 11812ab9cd1cSSteven Whitehouse 1182b452a458SAl Viro return gfs2_create_inode(dir, dentry, NULL, S_IFLNK | S_IRWXUGO, 0, symname, size, 0); 11832ab9cd1cSSteven Whitehouse } 11842ab9cd1cSSteven Whitehouse 11852ab9cd1cSSteven Whitehouse /** 11862ab9cd1cSSteven Whitehouse * gfs2_mkdir - Make a directory 11872ab9cd1cSSteven Whitehouse * @dir: The parent directory of the new one 11882ab9cd1cSSteven Whitehouse * @dentry: The dentry of the new directory 11892ab9cd1cSSteven Whitehouse * @mode: The mode of the new directory 11902ab9cd1cSSteven Whitehouse * 11912ab9cd1cSSteven Whitehouse * Returns: errno 11922ab9cd1cSSteven Whitehouse */ 11932ab9cd1cSSteven Whitehouse 119418bb1db3SAl Viro static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) 11952ab9cd1cSSteven Whitehouse { 1196235628c5SAndreas Gruenbacher unsigned dsize = gfs2_max_stuffed_size(GFS2_I(dir)); 1197b452a458SAl Viro return gfs2_create_inode(dir, dentry, NULL, S_IFDIR | mode, 0, NULL, dsize, 0); 11982ab9cd1cSSteven Whitehouse } 11992ab9cd1cSSteven Whitehouse 12002ab9cd1cSSteven Whitehouse /** 12012ab9cd1cSSteven Whitehouse * gfs2_mknod - Make a special file 12022ab9cd1cSSteven Whitehouse * @dir: The directory in which the special file will reside 12032ab9cd1cSSteven Whitehouse * @dentry: The dentry of the special file 12042ab9cd1cSSteven Whitehouse * @mode: The mode of the special file 1205f2741d98SSteven Whitehouse * @dev: The device specification of the special file 12062ab9cd1cSSteven Whitehouse * 12072ab9cd1cSSteven Whitehouse */ 12082ab9cd1cSSteven Whitehouse 12091a67aafbSAl Viro static int gfs2_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, 12102ab9cd1cSSteven Whitehouse dev_t dev) 12112ab9cd1cSSteven Whitehouse { 1212b452a458SAl Viro return gfs2_create_inode(dir, dentry, NULL, mode, dev, NULL, 0, 0); 12136d4ade98SSteven Whitehouse } 12146d4ade98SSteven Whitehouse 12156d4ade98SSteven Whitehouse /** 12166d4ade98SSteven Whitehouse * gfs2_atomic_open - Atomically open a file 12176d4ade98SSteven Whitehouse * @dir: The directory 12186d4ade98SSteven Whitehouse * @dentry: The proposed new entry 12196d4ade98SSteven Whitehouse * @file: The proposed new struct file 12206d4ade98SSteven Whitehouse * @flags: open flags 12216d4ade98SSteven Whitehouse * @mode: File mode 12226d4ade98SSteven Whitehouse * 12236d4ade98SSteven Whitehouse * Returns: error code or 0 for success 12246d4ade98SSteven Whitehouse */ 12256d4ade98SSteven Whitehouse 12266d4ade98SSteven Whitehouse static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry, 12276d4ade98SSteven Whitehouse struct file *file, unsigned flags, 122844907d79SAl Viro umode_t mode) 12296d4ade98SSteven Whitehouse { 12306d4ade98SSteven Whitehouse struct dentry *d; 12316d4ade98SSteven Whitehouse bool excl = !!(flags & O_EXCL); 12326d4ade98SSteven Whitehouse 123300699ad8SAl Viro if (!d_in_lookup(dentry)) 12344d93bc3eSAl Viro goto skip_lookup; 12354d93bc3eSAl Viro 1236b452a458SAl Viro d = __gfs2_lookup(dir, dentry, file); 12376d4ade98SSteven Whitehouse if (IS_ERR(d)) 12386d4ade98SSteven Whitehouse return PTR_ERR(d); 12395ca1db41SMiklos Szeredi if (d != NULL) 12405ca1db41SMiklos Szeredi dentry = d; 12412b0143b5SDavid Howells if (d_really_is_positive(dentry)) { 1242aad888f8SAl Viro if (!(file->f_mode & FMODE_OPENED)) 1243ec7d879cSAl Viro return finish_no_open(file, d); 12445ca1db41SMiklos Szeredi dput(d); 12456d4ade98SSteven Whitehouse return 0; 12466d4ade98SSteven Whitehouse } 12476d4ade98SSteven Whitehouse 12485ca1db41SMiklos Szeredi BUG_ON(d != NULL); 12494d93bc3eSAl Viro 12504d93bc3eSAl Viro skip_lookup: 12516d4ade98SSteven Whitehouse if (!(flags & O_CREAT)) 12526d4ade98SSteven Whitehouse return -ENOENT; 12536d4ade98SSteven Whitehouse 1254b452a458SAl Viro return gfs2_create_inode(dir, dentry, file, S_IFREG | mode, 0, NULL, 0, excl); 12552ab9cd1cSSteven Whitehouse } 12562ab9cd1cSSteven Whitehouse 12572ab9cd1cSSteven Whitehouse /* 12582ab9cd1cSSteven Whitehouse * gfs2_ok_to_move - check if it's ok to move a directory to another directory 12592ab9cd1cSSteven Whitehouse * @this: move this 12602ab9cd1cSSteven Whitehouse * @to: to here 12612ab9cd1cSSteven Whitehouse * 12622ab9cd1cSSteven Whitehouse * Follow @to back to the root and make sure we don't encounter @this 12632ab9cd1cSSteven Whitehouse * Assumes we already hold the rename lock. 12642ab9cd1cSSteven Whitehouse * 12652ab9cd1cSSteven Whitehouse * Returns: errno 12662ab9cd1cSSteven Whitehouse */ 12672ab9cd1cSSteven Whitehouse 12682ab9cd1cSSteven Whitehouse static int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to) 12692ab9cd1cSSteven Whitehouse { 12702ab9cd1cSSteven Whitehouse struct inode *dir = &to->i_inode; 12712ab9cd1cSSteven Whitehouse struct super_block *sb = dir->i_sb; 12722ab9cd1cSSteven Whitehouse struct inode *tmp; 12732ab9cd1cSSteven Whitehouse int error = 0; 12742ab9cd1cSSteven Whitehouse 12752ab9cd1cSSteven Whitehouse igrab(dir); 12762ab9cd1cSSteven Whitehouse 12772ab9cd1cSSteven Whitehouse for (;;) { 12782ab9cd1cSSteven Whitehouse if (dir == &this->i_inode) { 12792ab9cd1cSSteven Whitehouse error = -EINVAL; 12802ab9cd1cSSteven Whitehouse break; 12812ab9cd1cSSteven Whitehouse } 12822b0143b5SDavid Howells if (dir == d_inode(sb->s_root)) { 12832ab9cd1cSSteven Whitehouse error = 0; 12842ab9cd1cSSteven Whitehouse break; 12852ab9cd1cSSteven Whitehouse } 12862ab9cd1cSSteven Whitehouse 12872ab9cd1cSSteven Whitehouse tmp = gfs2_lookupi(dir, &gfs2_qdotdot, 1); 128848f8f711SAbhi Das if (!tmp) { 128948f8f711SAbhi Das error = -ENOENT; 129048f8f711SAbhi Das break; 129148f8f711SAbhi Das } 12922ab9cd1cSSteven Whitehouse if (IS_ERR(tmp)) { 12932ab9cd1cSSteven Whitehouse error = PTR_ERR(tmp); 12942ab9cd1cSSteven Whitehouse break; 12952ab9cd1cSSteven Whitehouse } 12962ab9cd1cSSteven Whitehouse 12972ab9cd1cSSteven Whitehouse iput(dir); 12982ab9cd1cSSteven Whitehouse dir = tmp; 12992ab9cd1cSSteven Whitehouse } 13002ab9cd1cSSteven Whitehouse 13012ab9cd1cSSteven Whitehouse iput(dir); 13022ab9cd1cSSteven Whitehouse 13032ab9cd1cSSteven Whitehouse return error; 13042ab9cd1cSSteven Whitehouse } 13052ab9cd1cSSteven Whitehouse 13062ab9cd1cSSteven Whitehouse /** 1307a63b7bbcSBenjamin Marzinski * update_moved_ino - Update an inode that's being moved 1308a63b7bbcSBenjamin Marzinski * @ip: The inode being moved 1309a63b7bbcSBenjamin Marzinski * @ndip: The parent directory of the new filename 1310a63b7bbcSBenjamin Marzinski * @dir_rename: True of ip is a directory 1311a63b7bbcSBenjamin Marzinski * 1312a63b7bbcSBenjamin Marzinski * Returns: errno 1313a63b7bbcSBenjamin Marzinski */ 1314a63b7bbcSBenjamin Marzinski 1315a63b7bbcSBenjamin Marzinski static int update_moved_ino(struct gfs2_inode *ip, struct gfs2_inode *ndip, 1316a63b7bbcSBenjamin Marzinski int dir_rename) 1317a63b7bbcSBenjamin Marzinski { 1318a63b7bbcSBenjamin Marzinski if (dir_rename) 1319a63b7bbcSBenjamin Marzinski return gfs2_dir_mvino(ip, &gfs2_qdotdot, ndip, DT_DIR); 1320a63b7bbcSBenjamin Marzinski 1321078cd827SDeepa Dinamani ip->i_inode.i_ctime = current_time(&ip->i_inode); 132283998ccdSAndreas Gruenbacher mark_inode_dirty_sync(&ip->i_inode); 1323a63b7bbcSBenjamin Marzinski return 0; 1324a63b7bbcSBenjamin Marzinski } 1325a63b7bbcSBenjamin Marzinski 1326a63b7bbcSBenjamin Marzinski 1327a63b7bbcSBenjamin Marzinski /** 13282ab9cd1cSSteven Whitehouse * gfs2_rename - Rename a file 13292ab9cd1cSSteven Whitehouse * @odir: Parent directory of old file name 13302ab9cd1cSSteven Whitehouse * @odentry: The old dentry of the file 13312ab9cd1cSSteven Whitehouse * @ndir: Parent directory of new file name 13322ab9cd1cSSteven Whitehouse * @ndentry: The new dentry of the file 13332ab9cd1cSSteven Whitehouse * 13342ab9cd1cSSteven Whitehouse * Returns: errno 13352ab9cd1cSSteven Whitehouse */ 13362ab9cd1cSSteven Whitehouse 13372ab9cd1cSSteven Whitehouse static int gfs2_rename(struct inode *odir, struct dentry *odentry, 13382ab9cd1cSSteven Whitehouse struct inode *ndir, struct dentry *ndentry) 13392ab9cd1cSSteven Whitehouse { 13402ab9cd1cSSteven Whitehouse struct gfs2_inode *odip = GFS2_I(odir); 13412ab9cd1cSSteven Whitehouse struct gfs2_inode *ndip = GFS2_I(ndir); 13422b0143b5SDavid Howells struct gfs2_inode *ip = GFS2_I(d_inode(odentry)); 13432ab9cd1cSSteven Whitehouse struct gfs2_inode *nip = NULL; 13442ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(odir); 1345bc74aaefSBob Peterson struct gfs2_holder ghs[4], r_gh, rd_gh; 13462ab9cd1cSSteven Whitehouse struct gfs2_rgrpd *nrgd; 13472ab9cd1cSSteven Whitehouse unsigned int num_gh; 13482ab9cd1cSSteven Whitehouse int dir_rename = 0; 134919aeb5a6SBob Peterson struct gfs2_diradd da = { .nr_blocks = 0, .save_loc = 0, }; 13502ab9cd1cSSteven Whitehouse unsigned int x; 13512ab9cd1cSSteven Whitehouse int error; 13522ab9cd1cSSteven Whitehouse 13536df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&r_gh); 1354bc74aaefSBob Peterson gfs2_holder_mark_uninitialized(&rd_gh); 13552b0143b5SDavid Howells if (d_really_is_positive(ndentry)) { 13562b0143b5SDavid Howells nip = GFS2_I(d_inode(ndentry)); 13572ab9cd1cSSteven Whitehouse if (ip == nip) 13582ab9cd1cSSteven Whitehouse return 0; 13592ab9cd1cSSteven Whitehouse } 13602ab9cd1cSSteven Whitehouse 13615e2f7d61SBob Peterson error = gfs2_rindex_update(sdp); 13625e2f7d61SBob Peterson if (error) 13635e2f7d61SBob Peterson return error; 13645e2f7d61SBob Peterson 1365b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ndip); 13660a305e49SBob Peterson if (error) 13670a305e49SBob Peterson return error; 13680a305e49SBob Peterson 13692ab9cd1cSSteven Whitehouse if (odip != ndip) { 13702ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE, 13712ab9cd1cSSteven Whitehouse 0, &r_gh); 13722ab9cd1cSSteven Whitehouse if (error) 13732ab9cd1cSSteven Whitehouse goto out; 13742ab9cd1cSSteven Whitehouse 13752ab9cd1cSSteven Whitehouse if (S_ISDIR(ip->i_inode.i_mode)) { 13762ab9cd1cSSteven Whitehouse dir_rename = 1; 1377a63b7bbcSBenjamin Marzinski /* don't move a directory into its subdir */ 13782ab9cd1cSSteven Whitehouse error = gfs2_ok_to_move(ip, ndip); 13792ab9cd1cSSteven Whitehouse if (error) 13802ab9cd1cSSteven Whitehouse goto out_gunlock_r; 13812ab9cd1cSSteven Whitehouse } 13822ab9cd1cSSteven Whitehouse } 13832ab9cd1cSSteven Whitehouse 13842ab9cd1cSSteven Whitehouse num_gh = 1; 1385ad26967bSBob Peterson gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs); 13862ab9cd1cSSteven Whitehouse if (odip != ndip) { 1387ad26967bSBob Peterson gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE,GL_ASYNC, 1388ad26967bSBob Peterson ghs + num_gh); 13892ab9cd1cSSteven Whitehouse num_gh++; 13902ab9cd1cSSteven Whitehouse } 1391ad26967bSBob Peterson gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs + num_gh); 13922ab9cd1cSSteven Whitehouse num_gh++; 13932ab9cd1cSSteven Whitehouse 13942ab9cd1cSSteven Whitehouse if (nip) { 1395ad26967bSBob Peterson gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, 1396ad26967bSBob Peterson ghs + num_gh); 13972ab9cd1cSSteven Whitehouse num_gh++; 13982ab9cd1cSSteven Whitehouse } 13992ab9cd1cSSteven Whitehouse 14002ab9cd1cSSteven Whitehouse for (x = 0; x < num_gh; x++) { 14012ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + x); 14022ab9cd1cSSteven Whitehouse if (error) 14032ab9cd1cSSteven Whitehouse goto out_gunlock; 14042ab9cd1cSSteven Whitehouse } 1405ad26967bSBob Peterson error = gfs2_glock_async_wait(num_gh, ghs); 1406ad26967bSBob Peterson if (error) 1407ad26967bSBob Peterson goto out_gunlock; 14082ab9cd1cSSteven Whitehouse 1409bc74aaefSBob Peterson if (nip) { 1410bc74aaefSBob Peterson /* Grab the resource group glock for unlink flag twiddling. 1411bc74aaefSBob Peterson * This is the case where the target dinode already exists 1412bc74aaefSBob Peterson * so we unlink before doing the rename. 1413bc74aaefSBob Peterson */ 1414bc74aaefSBob Peterson nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr, 1); 1415bc74aaefSBob Peterson if (!nrgd) { 1416bc74aaefSBob Peterson error = -ENOENT; 1417bc74aaefSBob Peterson goto out_gunlock; 1418bc74aaefSBob Peterson } 1419bc74aaefSBob Peterson error = gfs2_glock_nq_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, 1420bc74aaefSBob Peterson &rd_gh); 1421bc74aaefSBob Peterson if (error) 1422bc74aaefSBob Peterson goto out_gunlock; 1423bc74aaefSBob Peterson } 1424bc74aaefSBob Peterson 14252ab9cd1cSSteven Whitehouse error = -ENOENT; 14262ab9cd1cSSteven Whitehouse if (ip->i_inode.i_nlink == 0) 14272ab9cd1cSSteven Whitehouse goto out_gunlock; 14282ab9cd1cSSteven Whitehouse 14292ab9cd1cSSteven Whitehouse /* Check out the old directory */ 14302ab9cd1cSSteven Whitehouse 14312ab9cd1cSSteven Whitehouse error = gfs2_unlink_ok(odip, &odentry->d_name, ip); 14322ab9cd1cSSteven Whitehouse if (error) 14332ab9cd1cSSteven Whitehouse goto out_gunlock; 14342ab9cd1cSSteven Whitehouse 14352ab9cd1cSSteven Whitehouse /* Check out the new directory */ 14362ab9cd1cSSteven Whitehouse 14372ab9cd1cSSteven Whitehouse if (nip) { 14382ab9cd1cSSteven Whitehouse error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip); 14392ab9cd1cSSteven Whitehouse if (error) 14402ab9cd1cSSteven Whitehouse goto out_gunlock; 14412ab9cd1cSSteven Whitehouse 14422ab9cd1cSSteven Whitehouse if (nip->i_inode.i_nlink == 0) { 14432ab9cd1cSSteven Whitehouse error = -EAGAIN; 14442ab9cd1cSSteven Whitehouse goto out_gunlock; 14452ab9cd1cSSteven Whitehouse } 14462ab9cd1cSSteven Whitehouse 14472ab9cd1cSSteven Whitehouse if (S_ISDIR(nip->i_inode.i_mode)) { 14482ab9cd1cSSteven Whitehouse if (nip->i_entries < 2) { 14492ab9cd1cSSteven Whitehouse gfs2_consist_inode(nip); 14502ab9cd1cSSteven Whitehouse error = -EIO; 14512ab9cd1cSSteven Whitehouse goto out_gunlock; 14522ab9cd1cSSteven Whitehouse } 14532ab9cd1cSSteven Whitehouse if (nip->i_entries > 2) { 14542ab9cd1cSSteven Whitehouse error = -ENOTEMPTY; 14552ab9cd1cSSteven Whitehouse goto out_gunlock; 14562ab9cd1cSSteven Whitehouse } 14572ab9cd1cSSteven Whitehouse } 14582ab9cd1cSSteven Whitehouse } else { 145910556cb2SAl Viro error = gfs2_permission(ndir, MAY_WRITE | MAY_EXEC); 14602ab9cd1cSSteven Whitehouse if (error) 14612ab9cd1cSSteven Whitehouse goto out_gunlock; 14622ab9cd1cSSteven Whitehouse 14632ab9cd1cSSteven Whitehouse error = gfs2_dir_check(ndir, &ndentry->d_name, NULL); 14642ab9cd1cSSteven Whitehouse switch (error) { 14652ab9cd1cSSteven Whitehouse case -ENOENT: 14662ab9cd1cSSteven Whitehouse error = 0; 14672ab9cd1cSSteven Whitehouse break; 14682ab9cd1cSSteven Whitehouse case 0: 14692ab9cd1cSSteven Whitehouse error = -EEXIST; 14702ab9cd1cSSteven Whitehouse default: 14712ab9cd1cSSteven Whitehouse goto out_gunlock; 1472098b9c14SAliasgar Surti } 14732ab9cd1cSSteven Whitehouse 14742ab9cd1cSSteven Whitehouse if (odip != ndip) { 14752ab9cd1cSSteven Whitehouse if (!ndip->i_inode.i_nlink) { 14762ab9cd1cSSteven Whitehouse error = -ENOENT; 14772ab9cd1cSSteven Whitehouse goto out_gunlock; 14782ab9cd1cSSteven Whitehouse } 14792ab9cd1cSSteven Whitehouse if (ndip->i_entries == (u32)-1) { 14802ab9cd1cSSteven Whitehouse error = -EFBIG; 14812ab9cd1cSSteven Whitehouse goto out_gunlock; 14822ab9cd1cSSteven Whitehouse } 14832ab9cd1cSSteven Whitehouse if (S_ISDIR(ip->i_inode.i_mode) && 14842ab9cd1cSSteven Whitehouse ndip->i_inode.i_nlink == (u32)-1) { 14852ab9cd1cSSteven Whitehouse error = -EMLINK; 14862ab9cd1cSSteven Whitehouse goto out_gunlock; 14872ab9cd1cSSteven Whitehouse } 14882ab9cd1cSSteven Whitehouse } 14892ab9cd1cSSteven Whitehouse } 14902ab9cd1cSSteven Whitehouse 14912ab9cd1cSSteven Whitehouse /* Check out the dir to be renamed */ 14922ab9cd1cSSteven Whitehouse 14932ab9cd1cSSteven Whitehouse if (dir_rename) { 14942b0143b5SDavid Howells error = gfs2_permission(d_inode(odentry), MAY_WRITE); 14952ab9cd1cSSteven Whitehouse if (error) 14962ab9cd1cSSteven Whitehouse goto out_gunlock; 14972ab9cd1cSSteven Whitehouse } 14982ab9cd1cSSteven Whitehouse 14993c1c0ae1SSteven Whitehouse if (nip == NULL) { 15003c1c0ae1SSteven Whitehouse error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name, &da); 15013c1c0ae1SSteven Whitehouse if (error) 15022ab9cd1cSSteven Whitehouse goto out_gunlock; 15033c1c0ae1SSteven Whitehouse } 15042ab9cd1cSSteven Whitehouse 15053c1c0ae1SSteven Whitehouse if (da.nr_blocks) { 15063c1c0ae1SSteven Whitehouse struct gfs2_alloc_parms ap = { .target = da.nr_blocks, }; 1507b8fbf471SAbhi Das error = gfs2_quota_lock_check(ndip, &ap); 15082ab9cd1cSSteven Whitehouse if (error) 15095407e242SBob Peterson goto out_gunlock; 15102ab9cd1cSSteven Whitehouse 15117b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(ndip, &ap); 15122ab9cd1cSSteven Whitehouse if (error) 15132ab9cd1cSSteven Whitehouse goto out_gunlock_q; 15142ab9cd1cSSteven Whitehouse 1515534cf9caSSteven Whitehouse error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(ndip, &da, 4) + 1516534cf9caSSteven Whitehouse 4 * RES_LEAF + 4, 0); 15172ab9cd1cSSteven Whitehouse if (error) 15182ab9cd1cSSteven Whitehouse goto out_ipreserv; 15192ab9cd1cSSteven Whitehouse } else { 15202ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, 4 * RES_DINODE + 15212ab9cd1cSSteven Whitehouse 5 * RES_LEAF + 4, 0); 15222ab9cd1cSSteven Whitehouse if (error) 15232ab9cd1cSSteven Whitehouse goto out_gunlock; 15242ab9cd1cSSteven Whitehouse } 15252ab9cd1cSSteven Whitehouse 15262ab9cd1cSSteven Whitehouse /* Remove the target file, if it exists */ 15272ab9cd1cSSteven Whitehouse 15284327a9bfSBob Peterson if (nip) 15294327a9bfSBob Peterson error = gfs2_unlink_inode(ndip, ndentry); 15302ab9cd1cSSteven Whitehouse 1531a63b7bbcSBenjamin Marzinski error = update_moved_ino(ip, ndip, dir_rename); 15322ab9cd1cSSteven Whitehouse if (error) 15332ab9cd1cSSteven Whitehouse goto out_end_trans; 15342ab9cd1cSSteven Whitehouse 15352ab9cd1cSSteven Whitehouse error = gfs2_dir_del(odip, odentry); 15362ab9cd1cSSteven Whitehouse if (error) 15372ab9cd1cSSteven Whitehouse goto out_end_trans; 15382ab9cd1cSSteven Whitehouse 15392b47dad8SSteven Whitehouse error = gfs2_dir_add(ndir, &ndentry->d_name, ip, &da); 15402ab9cd1cSSteven Whitehouse if (error) 15412ab9cd1cSSteven Whitehouse goto out_end_trans; 15422ab9cd1cSSteven Whitehouse 15432ab9cd1cSSteven Whitehouse out_end_trans: 15442ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 15452ab9cd1cSSteven Whitehouse out_ipreserv: 15463c1c0ae1SSteven Whitehouse if (da.nr_blocks) 15472ab9cd1cSSteven Whitehouse gfs2_inplace_release(ndip); 15482ab9cd1cSSteven Whitehouse out_gunlock_q: 15493c1c0ae1SSteven Whitehouse if (da.nr_blocks) 15502ab9cd1cSSteven Whitehouse gfs2_quota_unlock(ndip); 15512ab9cd1cSSteven Whitehouse out_gunlock: 15522b47dad8SSteven Whitehouse gfs2_dir_no_add(&da); 1553bc74aaefSBob Peterson if (gfs2_holder_initialized(&rd_gh)) 1554bc74aaefSBob Peterson gfs2_glock_dq_uninit(&rd_gh); 1555bc74aaefSBob Peterson 15562ab9cd1cSSteven Whitehouse while (x--) { 1557ad26967bSBob Peterson if (gfs2_holder_queued(ghs + x)) 15582ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + x); 15592ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs + x); 15602ab9cd1cSSteven Whitehouse } 15612ab9cd1cSSteven Whitehouse out_gunlock_r: 15626df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&r_gh)) 15632ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&r_gh); 15642ab9cd1cSSteven Whitehouse out: 15652ab9cd1cSSteven Whitehouse return error; 15662ab9cd1cSSteven Whitehouse } 15672ab9cd1cSSteven Whitehouse 15682ab9cd1cSSteven Whitehouse /** 1569a63b7bbcSBenjamin Marzinski * gfs2_exchange - exchange two files 1570a63b7bbcSBenjamin Marzinski * @odir: Parent directory of old file name 1571a63b7bbcSBenjamin Marzinski * @odentry: The old dentry of the file 1572a63b7bbcSBenjamin Marzinski * @ndir: Parent directory of new file name 1573a63b7bbcSBenjamin Marzinski * @ndentry: The new dentry of the file 1574a63b7bbcSBenjamin Marzinski * @flags: The rename flags 1575a63b7bbcSBenjamin Marzinski * 1576a63b7bbcSBenjamin Marzinski * Returns: errno 1577a63b7bbcSBenjamin Marzinski */ 1578a63b7bbcSBenjamin Marzinski 1579a63b7bbcSBenjamin Marzinski static int gfs2_exchange(struct inode *odir, struct dentry *odentry, 1580a63b7bbcSBenjamin Marzinski struct inode *ndir, struct dentry *ndentry, 1581a63b7bbcSBenjamin Marzinski unsigned int flags) 1582a63b7bbcSBenjamin Marzinski { 1583a63b7bbcSBenjamin Marzinski struct gfs2_inode *odip = GFS2_I(odir); 1584a63b7bbcSBenjamin Marzinski struct gfs2_inode *ndip = GFS2_I(ndir); 1585a63b7bbcSBenjamin Marzinski struct gfs2_inode *oip = GFS2_I(odentry->d_inode); 1586a63b7bbcSBenjamin Marzinski struct gfs2_inode *nip = GFS2_I(ndentry->d_inode); 1587a63b7bbcSBenjamin Marzinski struct gfs2_sbd *sdp = GFS2_SB(odir); 1588ad26967bSBob Peterson struct gfs2_holder ghs[4], r_gh; 1589a63b7bbcSBenjamin Marzinski unsigned int num_gh; 1590a63b7bbcSBenjamin Marzinski unsigned int x; 1591a63b7bbcSBenjamin Marzinski umode_t old_mode = oip->i_inode.i_mode; 1592a63b7bbcSBenjamin Marzinski umode_t new_mode = nip->i_inode.i_mode; 1593a63b7bbcSBenjamin Marzinski int error; 1594a63b7bbcSBenjamin Marzinski 15956df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&r_gh); 1596a63b7bbcSBenjamin Marzinski error = gfs2_rindex_update(sdp); 1597a63b7bbcSBenjamin Marzinski if (error) 1598a63b7bbcSBenjamin Marzinski return error; 1599a63b7bbcSBenjamin Marzinski 1600a63b7bbcSBenjamin Marzinski if (odip != ndip) { 1601a63b7bbcSBenjamin Marzinski error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE, 1602a63b7bbcSBenjamin Marzinski 0, &r_gh); 1603a63b7bbcSBenjamin Marzinski if (error) 1604a63b7bbcSBenjamin Marzinski goto out; 1605a63b7bbcSBenjamin Marzinski 1606a63b7bbcSBenjamin Marzinski if (S_ISDIR(old_mode)) { 1607a63b7bbcSBenjamin Marzinski /* don't move a directory into its subdir */ 1608a63b7bbcSBenjamin Marzinski error = gfs2_ok_to_move(oip, ndip); 1609a63b7bbcSBenjamin Marzinski if (error) 1610a63b7bbcSBenjamin Marzinski goto out_gunlock_r; 1611a63b7bbcSBenjamin Marzinski } 1612a63b7bbcSBenjamin Marzinski 1613a63b7bbcSBenjamin Marzinski if (S_ISDIR(new_mode)) { 1614a63b7bbcSBenjamin Marzinski /* don't move a directory into its subdir */ 1615a63b7bbcSBenjamin Marzinski error = gfs2_ok_to_move(nip, odip); 1616a63b7bbcSBenjamin Marzinski if (error) 1617a63b7bbcSBenjamin Marzinski goto out_gunlock_r; 1618a63b7bbcSBenjamin Marzinski } 1619a63b7bbcSBenjamin Marzinski } 1620a63b7bbcSBenjamin Marzinski 1621a63b7bbcSBenjamin Marzinski num_gh = 1; 1622ad26967bSBob Peterson gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs); 1623a63b7bbcSBenjamin Marzinski if (odip != ndip) { 1624ad26967bSBob Peterson gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, 1625ad26967bSBob Peterson ghs + num_gh); 1626a63b7bbcSBenjamin Marzinski num_gh++; 1627a63b7bbcSBenjamin Marzinski } 1628ad26967bSBob Peterson gfs2_holder_init(oip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs + num_gh); 1629a63b7bbcSBenjamin Marzinski num_gh++; 1630a63b7bbcSBenjamin Marzinski 1631ad26967bSBob Peterson gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, GL_ASYNC, ghs + num_gh); 1632a63b7bbcSBenjamin Marzinski num_gh++; 1633a63b7bbcSBenjamin Marzinski 1634a63b7bbcSBenjamin Marzinski for (x = 0; x < num_gh; x++) { 1635a63b7bbcSBenjamin Marzinski error = gfs2_glock_nq(ghs + x); 1636a63b7bbcSBenjamin Marzinski if (error) 1637a63b7bbcSBenjamin Marzinski goto out_gunlock; 1638a63b7bbcSBenjamin Marzinski } 1639a63b7bbcSBenjamin Marzinski 1640ad26967bSBob Peterson error = gfs2_glock_async_wait(num_gh, ghs); 1641ad26967bSBob Peterson if (error) 1642ad26967bSBob Peterson goto out_gunlock; 1643ad26967bSBob Peterson 1644a63b7bbcSBenjamin Marzinski error = -ENOENT; 1645a63b7bbcSBenjamin Marzinski if (oip->i_inode.i_nlink == 0 || nip->i_inode.i_nlink == 0) 1646a63b7bbcSBenjamin Marzinski goto out_gunlock; 1647a63b7bbcSBenjamin Marzinski 1648a63b7bbcSBenjamin Marzinski error = gfs2_unlink_ok(odip, &odentry->d_name, oip); 1649a63b7bbcSBenjamin Marzinski if (error) 1650a63b7bbcSBenjamin Marzinski goto out_gunlock; 1651a63b7bbcSBenjamin Marzinski error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip); 1652a63b7bbcSBenjamin Marzinski if (error) 1653a63b7bbcSBenjamin Marzinski goto out_gunlock; 1654a63b7bbcSBenjamin Marzinski 1655a63b7bbcSBenjamin Marzinski if (S_ISDIR(old_mode)) { 1656a63b7bbcSBenjamin Marzinski error = gfs2_permission(odentry->d_inode, MAY_WRITE); 1657a63b7bbcSBenjamin Marzinski if (error) 1658a63b7bbcSBenjamin Marzinski goto out_gunlock; 1659a63b7bbcSBenjamin Marzinski } 1660a63b7bbcSBenjamin Marzinski if (S_ISDIR(new_mode)) { 1661a63b7bbcSBenjamin Marzinski error = gfs2_permission(ndentry->d_inode, MAY_WRITE); 1662a63b7bbcSBenjamin Marzinski if (error) 1663a63b7bbcSBenjamin Marzinski goto out_gunlock; 1664a63b7bbcSBenjamin Marzinski } 1665a63b7bbcSBenjamin Marzinski error = gfs2_trans_begin(sdp, 4 * RES_DINODE + 4 * RES_LEAF, 0); 1666a63b7bbcSBenjamin Marzinski if (error) 1667a63b7bbcSBenjamin Marzinski goto out_gunlock; 1668a63b7bbcSBenjamin Marzinski 1669a63b7bbcSBenjamin Marzinski error = update_moved_ino(oip, ndip, S_ISDIR(old_mode)); 1670a63b7bbcSBenjamin Marzinski if (error) 1671a63b7bbcSBenjamin Marzinski goto out_end_trans; 1672a63b7bbcSBenjamin Marzinski 1673a63b7bbcSBenjamin Marzinski error = update_moved_ino(nip, odip, S_ISDIR(new_mode)); 1674a63b7bbcSBenjamin Marzinski if (error) 1675a63b7bbcSBenjamin Marzinski goto out_end_trans; 1676a63b7bbcSBenjamin Marzinski 1677a63b7bbcSBenjamin Marzinski error = gfs2_dir_mvino(ndip, &ndentry->d_name, oip, 1678a63b7bbcSBenjamin Marzinski IF2DT(old_mode)); 1679a63b7bbcSBenjamin Marzinski if (error) 1680a63b7bbcSBenjamin Marzinski goto out_end_trans; 1681a63b7bbcSBenjamin Marzinski 1682a63b7bbcSBenjamin Marzinski error = gfs2_dir_mvino(odip, &odentry->d_name, nip, 1683a63b7bbcSBenjamin Marzinski IF2DT(new_mode)); 1684a63b7bbcSBenjamin Marzinski if (error) 1685a63b7bbcSBenjamin Marzinski goto out_end_trans; 1686a63b7bbcSBenjamin Marzinski 1687a63b7bbcSBenjamin Marzinski if (odip != ndip) { 1688a63b7bbcSBenjamin Marzinski if (S_ISDIR(new_mode) && !S_ISDIR(old_mode)) { 1689a63b7bbcSBenjamin Marzinski inc_nlink(&odip->i_inode); 1690a63b7bbcSBenjamin Marzinski drop_nlink(&ndip->i_inode); 1691a63b7bbcSBenjamin Marzinski } else if (S_ISDIR(old_mode) && !S_ISDIR(new_mode)) { 1692a63b7bbcSBenjamin Marzinski inc_nlink(&ndip->i_inode); 1693a63b7bbcSBenjamin Marzinski drop_nlink(&odip->i_inode); 1694a63b7bbcSBenjamin Marzinski } 1695a63b7bbcSBenjamin Marzinski } 1696a63b7bbcSBenjamin Marzinski mark_inode_dirty(&ndip->i_inode); 1697a63b7bbcSBenjamin Marzinski if (odip != ndip) 1698a63b7bbcSBenjamin Marzinski mark_inode_dirty(&odip->i_inode); 1699a63b7bbcSBenjamin Marzinski 1700a63b7bbcSBenjamin Marzinski out_end_trans: 1701a63b7bbcSBenjamin Marzinski gfs2_trans_end(sdp); 1702a63b7bbcSBenjamin Marzinski out_gunlock: 1703a63b7bbcSBenjamin Marzinski while (x--) { 1704ad26967bSBob Peterson if (gfs2_holder_queued(ghs + x)) 1705a63b7bbcSBenjamin Marzinski gfs2_glock_dq(ghs + x); 1706a63b7bbcSBenjamin Marzinski gfs2_holder_uninit(ghs + x); 1707a63b7bbcSBenjamin Marzinski } 1708a63b7bbcSBenjamin Marzinski out_gunlock_r: 17096df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&r_gh)) 1710a63b7bbcSBenjamin Marzinski gfs2_glock_dq_uninit(&r_gh); 1711a63b7bbcSBenjamin Marzinski out: 1712a63b7bbcSBenjamin Marzinski return error; 1713a63b7bbcSBenjamin Marzinski } 1714a63b7bbcSBenjamin Marzinski 1715a63b7bbcSBenjamin Marzinski static int gfs2_rename2(struct inode *odir, struct dentry *odentry, 1716a63b7bbcSBenjamin Marzinski struct inode *ndir, struct dentry *ndentry, 1717a63b7bbcSBenjamin Marzinski unsigned int flags) 1718a63b7bbcSBenjamin Marzinski { 1719a63b7bbcSBenjamin Marzinski flags &= ~RENAME_NOREPLACE; 1720a63b7bbcSBenjamin Marzinski 1721a63b7bbcSBenjamin Marzinski if (flags & ~RENAME_EXCHANGE) 1722a63b7bbcSBenjamin Marzinski return -EINVAL; 1723a63b7bbcSBenjamin Marzinski 1724a63b7bbcSBenjamin Marzinski if (flags & RENAME_EXCHANGE) 1725a63b7bbcSBenjamin Marzinski return gfs2_exchange(odir, odentry, ndir, ndentry, flags); 1726a63b7bbcSBenjamin Marzinski 1727a63b7bbcSBenjamin Marzinski return gfs2_rename(odir, odentry, ndir, ndentry); 1728a63b7bbcSBenjamin Marzinski } 1729a63b7bbcSBenjamin Marzinski 1730a63b7bbcSBenjamin Marzinski /** 17316b255391SAl Viro * gfs2_get_link - Follow a symbolic link 17322ab9cd1cSSteven Whitehouse * @dentry: The dentry of the link 17336b255391SAl Viro * @inode: The inode of the link 1734fceef393SAl Viro * @done: destructor for return value 17352ab9cd1cSSteven Whitehouse * 17362ab9cd1cSSteven Whitehouse * This can handle symlinks of any size. 17372ab9cd1cSSteven Whitehouse * 17382ab9cd1cSSteven Whitehouse * Returns: 0 on success or error code 17392ab9cd1cSSteven Whitehouse */ 17402ab9cd1cSSteven Whitehouse 17416b255391SAl Viro static const char *gfs2_get_link(struct dentry *dentry, 1742fceef393SAl Viro struct inode *inode, 1743fceef393SAl Viro struct delayed_call *done) 17442ab9cd1cSSteven Whitehouse { 17456b255391SAl Viro struct gfs2_inode *ip = GFS2_I(inode); 17462ab9cd1cSSteven Whitehouse struct gfs2_holder i_gh; 17472ab9cd1cSSteven Whitehouse struct buffer_head *dibh; 1748160b4026SSteven Whitehouse unsigned int size; 17492ab9cd1cSSteven Whitehouse char *buf; 17502ab9cd1cSSteven Whitehouse int error; 17512ab9cd1cSSteven Whitehouse 17526b255391SAl Viro if (!dentry) 17536b255391SAl Viro return ERR_PTR(-ECHILD); 17546b255391SAl Viro 17552ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh); 17562ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(&i_gh); 17572ab9cd1cSSteven Whitehouse if (error) { 17582ab9cd1cSSteven Whitehouse gfs2_holder_uninit(&i_gh); 1759680baacbSAl Viro return ERR_PTR(error); 17602ab9cd1cSSteven Whitehouse } 17612ab9cd1cSSteven Whitehouse 17622ab9cd1cSSteven Whitehouse size = (unsigned int)i_size_read(&ip->i_inode); 17632ab9cd1cSSteven Whitehouse if (size == 0) { 17642ab9cd1cSSteven Whitehouse gfs2_consist_inode(ip); 17652ab9cd1cSSteven Whitehouse buf = ERR_PTR(-EIO); 17662ab9cd1cSSteven Whitehouse goto out; 17672ab9cd1cSSteven Whitehouse } 17682ab9cd1cSSteven Whitehouse 17692ab9cd1cSSteven Whitehouse error = gfs2_meta_inode_buffer(ip, &dibh); 17702ab9cd1cSSteven Whitehouse if (error) { 17712ab9cd1cSSteven Whitehouse buf = ERR_PTR(error); 17722ab9cd1cSSteven Whitehouse goto out; 17732ab9cd1cSSteven Whitehouse } 17742ab9cd1cSSteven Whitehouse 1775160b4026SSteven Whitehouse buf = kzalloc(size + 1, GFP_NOFS); 17762ab9cd1cSSteven Whitehouse if (!buf) 17772ab9cd1cSSteven Whitehouse buf = ERR_PTR(-ENOMEM); 17782ab9cd1cSSteven Whitehouse else 1779160b4026SSteven Whitehouse memcpy(buf, dibh->b_data + sizeof(struct gfs2_dinode), size); 17802ab9cd1cSSteven Whitehouse brelse(dibh); 17812ab9cd1cSSteven Whitehouse out: 17822ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&i_gh); 1783680baacbSAl Viro if (!IS_ERR(buf)) 1784fceef393SAl Viro set_delayed_call(done, kfree_link, buf); 1785680baacbSAl Viro return buf; 17862ab9cd1cSSteven Whitehouse } 17872ab9cd1cSSteven Whitehouse 17882ab9cd1cSSteven Whitehouse /** 17892ab9cd1cSSteven Whitehouse * gfs2_permission - 17902ab9cd1cSSteven Whitehouse * @inode: The inode 17912ab9cd1cSSteven Whitehouse * @mask: The mask to be tested 17922ab9cd1cSSteven Whitehouse * @flags: Indicates whether this is an RCU path walk or not 17932ab9cd1cSSteven Whitehouse * 17942ab9cd1cSSteven Whitehouse * This may be called from the VFS directly, or from within GFS2 with the 17952ab9cd1cSSteven Whitehouse * inode locked, so we look to see if the glock is already locked and only 17962ab9cd1cSSteven Whitehouse * lock the glock if its not already been done. 17972ab9cd1cSSteven Whitehouse * 17982ab9cd1cSSteven Whitehouse * Returns: errno 17992ab9cd1cSSteven Whitehouse */ 18002ab9cd1cSSteven Whitehouse 180110556cb2SAl Viro int gfs2_permission(struct inode *inode, int mask) 18022ab9cd1cSSteven Whitehouse { 18032ab9cd1cSSteven Whitehouse struct gfs2_inode *ip; 18042ab9cd1cSSteven Whitehouse struct gfs2_holder i_gh; 18052ab9cd1cSSteven Whitehouse int error; 18062ab9cd1cSSteven Whitehouse 18076df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&i_gh); 18082ab9cd1cSSteven Whitehouse ip = GFS2_I(inode); 18092ab9cd1cSSteven Whitehouse if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) { 181010556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 18112ab9cd1cSSteven Whitehouse return -ECHILD; 18122ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); 18132ab9cd1cSSteven Whitehouse if (error) 18142ab9cd1cSSteven Whitehouse return error; 18152ab9cd1cSSteven Whitehouse } 18162ab9cd1cSSteven Whitehouse 18172ab9cd1cSSteven Whitehouse if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode)) 1818337684a1SEryu Guan error = -EPERM; 18192ab9cd1cSSteven Whitehouse else 18202830ba7fSAl Viro error = generic_permission(inode, mask); 18216df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&i_gh)) 18222ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&i_gh); 18232ab9cd1cSSteven Whitehouse 18242ab9cd1cSSteven Whitehouse return error; 18252ab9cd1cSSteven Whitehouse } 18262ab9cd1cSSteven Whitehouse 1827ab9bbda0SSteven Whitehouse static int __gfs2_setattr_simple(struct inode *inode, struct iattr *attr) 18282ab9cd1cSSteven Whitehouse { 18292ab9cd1cSSteven Whitehouse setattr_copy(inode, attr); 18302ab9cd1cSSteven Whitehouse mark_inode_dirty(inode); 18312ab9cd1cSSteven Whitehouse return 0; 18322ab9cd1cSSteven Whitehouse } 18332ab9cd1cSSteven Whitehouse 18342ab9cd1cSSteven Whitehouse /** 18352ab9cd1cSSteven Whitehouse * gfs2_setattr_simple - 18362ab9cd1cSSteven Whitehouse * @ip: 18372ab9cd1cSSteven Whitehouse * @attr: 18382ab9cd1cSSteven Whitehouse * 18392ab9cd1cSSteven Whitehouse * Returns: errno 18402ab9cd1cSSteven Whitehouse */ 18412ab9cd1cSSteven Whitehouse 1842ab9bbda0SSteven Whitehouse int gfs2_setattr_simple(struct inode *inode, struct iattr *attr) 18432ab9cd1cSSteven Whitehouse { 18442ab9cd1cSSteven Whitehouse int error; 18452ab9cd1cSSteven Whitehouse 18462ab9cd1cSSteven Whitehouse if (current->journal_info) 1847ab9bbda0SSteven Whitehouse return __gfs2_setattr_simple(inode, attr); 18482ab9cd1cSSteven Whitehouse 1849ab9bbda0SSteven Whitehouse error = gfs2_trans_begin(GFS2_SB(inode), RES_DINODE, 0); 18502ab9cd1cSSteven Whitehouse if (error) 18512ab9cd1cSSteven Whitehouse return error; 18522ab9cd1cSSteven Whitehouse 1853ab9bbda0SSteven Whitehouse error = __gfs2_setattr_simple(inode, attr); 1854ab9bbda0SSteven Whitehouse gfs2_trans_end(GFS2_SB(inode)); 18552ab9cd1cSSteven Whitehouse return error; 18562ab9cd1cSSteven Whitehouse } 18572ab9cd1cSSteven Whitehouse 18582ab9cd1cSSteven Whitehouse static int setattr_chown(struct inode *inode, struct iattr *attr) 18592ab9cd1cSSteven Whitehouse { 18602ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 18612ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 18627c06b5d6SEric W. Biederman kuid_t ouid, nuid; 18637c06b5d6SEric W. Biederman kgid_t ogid, ngid; 18642ab9cd1cSSteven Whitehouse int error; 1865b8fbf471SAbhi Das struct gfs2_alloc_parms ap; 18662ab9cd1cSSteven Whitehouse 18672ab9cd1cSSteven Whitehouse ouid = inode->i_uid; 18682ab9cd1cSSteven Whitehouse ogid = inode->i_gid; 18692ab9cd1cSSteven Whitehouse nuid = attr->ia_uid; 18702ab9cd1cSSteven Whitehouse ngid = attr->ia_gid; 18712ab9cd1cSSteven Whitehouse 18726b24c0d2SEric W. Biederman if (!(attr->ia_valid & ATTR_UID) || uid_eq(ouid, nuid)) 1873f4108a60SEric W. Biederman ouid = nuid = NO_UID_QUOTA_CHANGE; 18746b24c0d2SEric W. Biederman if (!(attr->ia_valid & ATTR_GID) || gid_eq(ogid, ngid)) 1875f4108a60SEric W. Biederman ogid = ngid = NO_GID_QUOTA_CHANGE; 18762ab9cd1cSSteven Whitehouse 1877b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ip); 187862e96cf8SBob Peterson if (error) 187962e96cf8SBob Peterson goto out; 188062e96cf8SBob Peterson 188162e96cf8SBob Peterson error = gfs2_rindex_update(sdp); 188262e96cf8SBob Peterson if (error) 188362e96cf8SBob Peterson goto out; 188462e96cf8SBob Peterson 188562e96cf8SBob Peterson error = gfs2_quota_lock(ip, nuid, ngid); 188662e96cf8SBob Peterson if (error) 188762e96cf8SBob Peterson goto out; 188862e96cf8SBob Peterson 1889b8fbf471SAbhi Das ap.target = gfs2_get_inode_blocks(&ip->i_inode); 1890b8fbf471SAbhi Das 18916b24c0d2SEric W. Biederman if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) || 18926b24c0d2SEric W. Biederman !gid_eq(ogid, NO_GID_QUOTA_CHANGE)) { 1893b8fbf471SAbhi Das error = gfs2_quota_check(ip, nuid, ngid, &ap); 18942ab9cd1cSSteven Whitehouse if (error) 18952ab9cd1cSSteven Whitehouse goto out_gunlock_q; 18962ab9cd1cSSteven Whitehouse } 18972ab9cd1cSSteven Whitehouse 18982ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0); 18992ab9cd1cSSteven Whitehouse if (error) 19002ab9cd1cSSteven Whitehouse goto out_gunlock_q; 19012ab9cd1cSSteven Whitehouse 1902ab9bbda0SSteven Whitehouse error = gfs2_setattr_simple(inode, attr); 19032ab9cd1cSSteven Whitehouse if (error) 19042ab9cd1cSSteven Whitehouse goto out_end_trans; 19052ab9cd1cSSteven Whitehouse 19066b24c0d2SEric W. Biederman if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) || 19076b24c0d2SEric W. Biederman !gid_eq(ogid, NO_GID_QUOTA_CHANGE)) { 190839a72580SAbhi Das gfs2_quota_change(ip, -(s64)ap.target, ouid, ogid); 1909b8fbf471SAbhi Das gfs2_quota_change(ip, ap.target, nuid, ngid); 19102ab9cd1cSSteven Whitehouse } 19112ab9cd1cSSteven Whitehouse 19122ab9cd1cSSteven Whitehouse out_end_trans: 19132ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 19142ab9cd1cSSteven Whitehouse out_gunlock_q: 19152ab9cd1cSSteven Whitehouse gfs2_quota_unlock(ip); 191662e96cf8SBob Peterson out: 19172ab9cd1cSSteven Whitehouse return error; 19182ab9cd1cSSteven Whitehouse } 19192ab9cd1cSSteven Whitehouse 19202ab9cd1cSSteven Whitehouse /** 19212ab9cd1cSSteven Whitehouse * gfs2_setattr - Change attributes on an inode 19222ab9cd1cSSteven Whitehouse * @dentry: The dentry which is changing 19232ab9cd1cSSteven Whitehouse * @attr: The structure describing the change 19242ab9cd1cSSteven Whitehouse * 19252ab9cd1cSSteven Whitehouse * The VFS layer wants to change one or more of an inodes attributes. Write 19262ab9cd1cSSteven Whitehouse * that change out to disk. 19272ab9cd1cSSteven Whitehouse * 19282ab9cd1cSSteven Whitehouse * Returns: errno 19292ab9cd1cSSteven Whitehouse */ 19302ab9cd1cSSteven Whitehouse 19312ab9cd1cSSteven Whitehouse static int gfs2_setattr(struct dentry *dentry, struct iattr *attr) 19322ab9cd1cSSteven Whitehouse { 19332b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 19342ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 19352ab9cd1cSSteven Whitehouse struct gfs2_holder i_gh; 19362ab9cd1cSSteven Whitehouse int error; 19372ab9cd1cSSteven Whitehouse 1938b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ip); 19390a305e49SBob Peterson if (error) 19400a305e49SBob Peterson return error; 19410a305e49SBob Peterson 19422ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); 19432ab9cd1cSSteven Whitehouse if (error) 19442ab9cd1cSSteven Whitehouse return error; 19452ab9cd1cSSteven Whitehouse 19462ab9cd1cSSteven Whitehouse error = -EPERM; 19472ab9cd1cSSteven Whitehouse if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) 19482ab9cd1cSSteven Whitehouse goto out; 19492ab9cd1cSSteven Whitehouse 195031051c85SJan Kara error = setattr_prepare(dentry, attr); 19512ab9cd1cSSteven Whitehouse if (error) 19522ab9cd1cSSteven Whitehouse goto out; 19532ab9cd1cSSteven Whitehouse 19542ab9cd1cSSteven Whitehouse if (attr->ia_valid & ATTR_SIZE) 19552ab9cd1cSSteven Whitehouse error = gfs2_setattr_size(inode, attr->ia_size); 19562ab9cd1cSSteven Whitehouse else if (attr->ia_valid & (ATTR_UID | ATTR_GID)) 19572ab9cd1cSSteven Whitehouse error = setattr_chown(inode, attr); 1958e01580bfSChristoph Hellwig else { 1959ab9bbda0SSteven Whitehouse error = gfs2_setattr_simple(inode, attr); 1960e01580bfSChristoph Hellwig if (!error && attr->ia_valid & ATTR_MODE) 1961e01580bfSChristoph Hellwig error = posix_acl_chmod(inode, inode->i_mode); 1962e01580bfSChristoph Hellwig } 19632ab9cd1cSSteven Whitehouse 19642ab9cd1cSSteven Whitehouse out: 19652ab9cd1cSSteven Whitehouse if (!error) 19662ab9cd1cSSteven Whitehouse mark_inode_dirty(inode); 1967ab9bbda0SSteven Whitehouse gfs2_glock_dq_uninit(&i_gh); 19682ab9cd1cSSteven Whitehouse return error; 19692ab9cd1cSSteven Whitehouse } 19702ab9cd1cSSteven Whitehouse 19712ab9cd1cSSteven Whitehouse /** 19722ab9cd1cSSteven Whitehouse * gfs2_getattr - Read out an inode's attributes 1973a528d35eSDavid Howells * @path: Object to query 19742ab9cd1cSSteven Whitehouse * @stat: The inode's stats 1975a528d35eSDavid Howells * @request_mask: Mask of STATX_xxx flags indicating the caller's interests 1976a528d35eSDavid Howells * @flags: AT_STATX_xxx setting 19772ab9cd1cSSteven Whitehouse * 19782ab9cd1cSSteven Whitehouse * This may be called from the VFS directly, or from within GFS2 with the 19792ab9cd1cSSteven Whitehouse * inode locked, so we look to see if the glock is already locked and only 19802ab9cd1cSSteven Whitehouse * lock the glock if its not already been done. Note that its the NFS 19812ab9cd1cSSteven Whitehouse * readdirplus operation which causes this to be called (from filldir) 19822ab9cd1cSSteven Whitehouse * with the glock already held. 19832ab9cd1cSSteven Whitehouse * 19842ab9cd1cSSteven Whitehouse * Returns: errno 19852ab9cd1cSSteven Whitehouse */ 19862ab9cd1cSSteven Whitehouse 1987a528d35eSDavid Howells static int gfs2_getattr(const struct path *path, struct kstat *stat, 1988a528d35eSDavid Howells u32 request_mask, unsigned int flags) 19892ab9cd1cSSteven Whitehouse { 1990a528d35eSDavid Howells struct inode *inode = d_inode(path->dentry); 19912ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 19922ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 1993b2623c2fSAndreas Gruenbacher u32 gfsflags; 19942ab9cd1cSSteven Whitehouse int error; 19952ab9cd1cSSteven Whitehouse 19966df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&gh); 19972ab9cd1cSSteven Whitehouse if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) { 19982ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); 19992ab9cd1cSSteven Whitehouse if (error) 20002ab9cd1cSSteven Whitehouse return error; 20012ab9cd1cSSteven Whitehouse } 20022ab9cd1cSSteven Whitehouse 2003b2623c2fSAndreas Gruenbacher gfsflags = ip->i_diskflags; 2004b2623c2fSAndreas Gruenbacher if (gfsflags & GFS2_DIF_APPENDONLY) 2005b2623c2fSAndreas Gruenbacher stat->attributes |= STATX_ATTR_APPEND; 2006b2623c2fSAndreas Gruenbacher if (gfsflags & GFS2_DIF_IMMUTABLE) 2007b2623c2fSAndreas Gruenbacher stat->attributes |= STATX_ATTR_IMMUTABLE; 2008b2623c2fSAndreas Gruenbacher 2009b2623c2fSAndreas Gruenbacher stat->attributes_mask |= (STATX_ATTR_APPEND | 2010b2623c2fSAndreas Gruenbacher STATX_ATTR_COMPRESSED | 2011b2623c2fSAndreas Gruenbacher STATX_ATTR_ENCRYPTED | 2012b2623c2fSAndreas Gruenbacher STATX_ATTR_IMMUTABLE | 2013b2623c2fSAndreas Gruenbacher STATX_ATTR_NODUMP); 2014b2623c2fSAndreas Gruenbacher 20152ab9cd1cSSteven Whitehouse generic_fillattr(inode, stat); 2016b2623c2fSAndreas Gruenbacher 20176df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&gh)) 20182ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&gh); 20192ab9cd1cSSteven Whitehouse 20202ab9cd1cSSteven Whitehouse return 0; 20212ab9cd1cSSteven Whitehouse } 20222ab9cd1cSSteven Whitehouse 20232ab9cd1cSSteven Whitehouse static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 20242ab9cd1cSSteven Whitehouse u64 start, u64 len) 20252ab9cd1cSSteven Whitehouse { 20262ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 20272ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 20282ab9cd1cSSteven Whitehouse int ret; 20292ab9cd1cSSteven Whitehouse 2030aac1a55bSBob Peterson inode_lock_shared(inode); 20312ab9cd1cSSteven Whitehouse 20322ab9cd1cSSteven Whitehouse ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh); 20332ab9cd1cSSteven Whitehouse if (ret) 20342ab9cd1cSSteven Whitehouse goto out; 20352ab9cd1cSSteven Whitehouse 2036aac1a55bSBob Peterson ret = iomap_fiemap(inode, fieinfo, start, len, &gfs2_iomap_ops); 20372ab9cd1cSSteven Whitehouse 20382ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&gh); 2039aac1a55bSBob Peterson 20402ab9cd1cSSteven Whitehouse out: 2041aac1a55bSBob Peterson inode_unlock_shared(inode); 20422ab9cd1cSSteven Whitehouse return ret; 20432ab9cd1cSSteven Whitehouse } 20442ab9cd1cSSteven Whitehouse 20453a27411cSAndreas Gruenbacher loff_t gfs2_seek_data(struct file *file, loff_t offset) 20463a27411cSAndreas Gruenbacher { 20473a27411cSAndreas Gruenbacher struct inode *inode = file->f_mapping->host; 20483a27411cSAndreas Gruenbacher struct gfs2_inode *ip = GFS2_I(inode); 20493a27411cSAndreas Gruenbacher struct gfs2_holder gh; 20503a27411cSAndreas Gruenbacher loff_t ret; 20513a27411cSAndreas Gruenbacher 20523a27411cSAndreas Gruenbacher inode_lock_shared(inode); 20533a27411cSAndreas Gruenbacher ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh); 20543a27411cSAndreas Gruenbacher if (!ret) 20553a27411cSAndreas Gruenbacher ret = iomap_seek_data(inode, offset, &gfs2_iomap_ops); 20563a27411cSAndreas Gruenbacher gfs2_glock_dq_uninit(&gh); 20573a27411cSAndreas Gruenbacher inode_unlock_shared(inode); 20583a27411cSAndreas Gruenbacher 20593a27411cSAndreas Gruenbacher if (ret < 0) 20603a27411cSAndreas Gruenbacher return ret; 20613a27411cSAndreas Gruenbacher return vfs_setpos(file, ret, inode->i_sb->s_maxbytes); 20623a27411cSAndreas Gruenbacher } 20633a27411cSAndreas Gruenbacher 20643a27411cSAndreas Gruenbacher loff_t gfs2_seek_hole(struct file *file, loff_t offset) 20653a27411cSAndreas Gruenbacher { 20663a27411cSAndreas Gruenbacher struct inode *inode = file->f_mapping->host; 20673a27411cSAndreas Gruenbacher struct gfs2_inode *ip = GFS2_I(inode); 20683a27411cSAndreas Gruenbacher struct gfs2_holder gh; 20693a27411cSAndreas Gruenbacher loff_t ret; 20703a27411cSAndreas Gruenbacher 20713a27411cSAndreas Gruenbacher inode_lock_shared(inode); 20723a27411cSAndreas Gruenbacher ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh); 20733a27411cSAndreas Gruenbacher if (!ret) 20743a27411cSAndreas Gruenbacher ret = iomap_seek_hole(inode, offset, &gfs2_iomap_ops); 20753a27411cSAndreas Gruenbacher gfs2_glock_dq_uninit(&gh); 20763a27411cSAndreas Gruenbacher inode_unlock_shared(inode); 20773a27411cSAndreas Gruenbacher 20783a27411cSAndreas Gruenbacher if (ret < 0) 20793a27411cSAndreas Gruenbacher return ret; 20803a27411cSAndreas Gruenbacher return vfs_setpos(file, ret, inode->i_sb->s_maxbytes); 20813a27411cSAndreas Gruenbacher } 20823a27411cSAndreas Gruenbacher 20832ab9cd1cSSteven Whitehouse const struct inode_operations gfs2_file_iops = { 20842ab9cd1cSSteven Whitehouse .permission = gfs2_permission, 20852ab9cd1cSSteven Whitehouse .setattr = gfs2_setattr, 20862ab9cd1cSSteven Whitehouse .getattr = gfs2_getattr, 20872ab9cd1cSSteven Whitehouse .listxattr = gfs2_listxattr, 20882ab9cd1cSSteven Whitehouse .fiemap = gfs2_fiemap, 20894e34e719SChristoph Hellwig .get_acl = gfs2_get_acl, 2090e01580bfSChristoph Hellwig .set_acl = gfs2_set_acl, 20912ab9cd1cSSteven Whitehouse }; 20922ab9cd1cSSteven Whitehouse 20932ab9cd1cSSteven Whitehouse const struct inode_operations gfs2_dir_iops = { 20942ab9cd1cSSteven Whitehouse .create = gfs2_create, 20952ab9cd1cSSteven Whitehouse .lookup = gfs2_lookup, 20962ab9cd1cSSteven Whitehouse .link = gfs2_link, 20972ab9cd1cSSteven Whitehouse .unlink = gfs2_unlink, 20982ab9cd1cSSteven Whitehouse .symlink = gfs2_symlink, 20992ab9cd1cSSteven Whitehouse .mkdir = gfs2_mkdir, 21002ab9cd1cSSteven Whitehouse .rmdir = gfs2_unlink, 21012ab9cd1cSSteven Whitehouse .mknod = gfs2_mknod, 21022773bf00SMiklos Szeredi .rename = gfs2_rename2, 21032ab9cd1cSSteven Whitehouse .permission = gfs2_permission, 21042ab9cd1cSSteven Whitehouse .setattr = gfs2_setattr, 21052ab9cd1cSSteven Whitehouse .getattr = gfs2_getattr, 21062ab9cd1cSSteven Whitehouse .listxattr = gfs2_listxattr, 21072ab9cd1cSSteven Whitehouse .fiemap = gfs2_fiemap, 21084e34e719SChristoph Hellwig .get_acl = gfs2_get_acl, 2109e01580bfSChristoph Hellwig .set_acl = gfs2_set_acl, 21106d4ade98SSteven Whitehouse .atomic_open = gfs2_atomic_open, 21112ab9cd1cSSteven Whitehouse }; 21122ab9cd1cSSteven Whitehouse 21132ab9cd1cSSteven Whitehouse const struct inode_operations gfs2_symlink_iops = { 21146b255391SAl Viro .get_link = gfs2_get_link, 21152ab9cd1cSSteven Whitehouse .permission = gfs2_permission, 21162ab9cd1cSSteven Whitehouse .setattr = gfs2_setattr, 21172ab9cd1cSSteven Whitehouse .getattr = gfs2_getattr, 21182ab9cd1cSSteven Whitehouse .listxattr = gfs2_listxattr, 21192ab9cd1cSSteven Whitehouse .fiemap = gfs2_fiemap, 21202ab9cd1cSSteven Whitehouse }; 21212ab9cd1cSSteven Whitehouse 2122