12ab9cd1cSSteven Whitehouse /* 22ab9cd1cSSteven Whitehouse * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 3f2741d98SSteven Whitehouse * Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved. 42ab9cd1cSSteven Whitehouse * 52ab9cd1cSSteven Whitehouse * This copyrighted material is made available to anyone wishing to use, 62ab9cd1cSSteven Whitehouse * modify, copy, or redistribute it subject to the terms and conditions 72ab9cd1cSSteven Whitehouse * of the GNU General Public License version 2. 82ab9cd1cSSteven Whitehouse */ 92ab9cd1cSSteven Whitehouse 102ab9cd1cSSteven Whitehouse #include <linux/slab.h> 112ab9cd1cSSteven Whitehouse #include <linux/spinlock.h> 122ab9cd1cSSteven Whitehouse #include <linux/completion.h> 132ab9cd1cSSteven Whitehouse #include <linux/buffer_head.h> 142ab9cd1cSSteven Whitehouse #include <linux/namei.h> 152ab9cd1cSSteven Whitehouse #include <linux/mm.h> 162ab9cd1cSSteven Whitehouse #include <linux/xattr.h> 172ab9cd1cSSteven Whitehouse #include <linux/posix_acl.h> 182ab9cd1cSSteven Whitehouse #include <linux/gfs2_ondisk.h> 192ab9cd1cSSteven Whitehouse #include <linux/crc32.h> 202ab9cd1cSSteven Whitehouse #include <linux/fiemap.h> 212ab9cd1cSSteven Whitehouse #include <linux/security.h> 222ab9cd1cSSteven Whitehouse #include <asm/uaccess.h> 232ab9cd1cSSteven Whitehouse 242ab9cd1cSSteven Whitehouse #include "gfs2.h" 252ab9cd1cSSteven Whitehouse #include "incore.h" 262ab9cd1cSSteven Whitehouse #include "acl.h" 272ab9cd1cSSteven Whitehouse #include "bmap.h" 282ab9cd1cSSteven Whitehouse #include "dir.h" 292ab9cd1cSSteven Whitehouse #include "xattr.h" 302ab9cd1cSSteven Whitehouse #include "glock.h" 312ab9cd1cSSteven Whitehouse #include "inode.h" 322ab9cd1cSSteven Whitehouse #include "meta_io.h" 332ab9cd1cSSteven Whitehouse #include "quota.h" 342ab9cd1cSSteven Whitehouse #include "rgrp.h" 352ab9cd1cSSteven Whitehouse #include "trans.h" 362ab9cd1cSSteven Whitehouse #include "util.h" 372ab9cd1cSSteven Whitehouse #include "super.h" 382ab9cd1cSSteven Whitehouse #include "glops.h" 392ab9cd1cSSteven Whitehouse 40cda9dd42SAndreas Gruenbacher static int iget_test(struct inode *inode, void *opaque) 412ab9cd1cSSteven Whitehouse { 42cda9dd42SAndreas Gruenbacher u64 no_addr = *(u64 *)opaque; 43cda9dd42SAndreas Gruenbacher 44cda9dd42SAndreas Gruenbacher return GFS2_I(inode)->i_no_addr == no_addr; 45cda9dd42SAndreas Gruenbacher } 46cda9dd42SAndreas Gruenbacher 47cda9dd42SAndreas Gruenbacher static int iget_set(struct inode *inode, void *opaque) 48cda9dd42SAndreas Gruenbacher { 49cda9dd42SAndreas Gruenbacher u64 no_addr = *(u64 *)opaque; 50cda9dd42SAndreas Gruenbacher 51cda9dd42SAndreas Gruenbacher GFS2_I(inode)->i_no_addr = no_addr; 52cda9dd42SAndreas Gruenbacher inode->i_ino = no_addr; 53cda9dd42SAndreas Gruenbacher return 0; 54cda9dd42SAndreas Gruenbacher } 55cda9dd42SAndreas Gruenbacher 563ce37b2cSAndreas Gruenbacher static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr) 573ce37b2cSAndreas Gruenbacher { 583ce37b2cSAndreas Gruenbacher struct inode *inode; 593ce37b2cSAndreas Gruenbacher 603ce37b2cSAndreas Gruenbacher repeat: 61cda9dd42SAndreas Gruenbacher inode = iget5_locked(sb, no_addr, iget_test, iget_set, &no_addr); 623ce37b2cSAndreas Gruenbacher if (!inode) 633ce37b2cSAndreas Gruenbacher return inode; 643ce37b2cSAndreas Gruenbacher if (is_bad_inode(inode)) { 653ce37b2cSAndreas Gruenbacher iput(inode); 663ce37b2cSAndreas Gruenbacher goto repeat; 673ce37b2cSAndreas Gruenbacher } 683ce37b2cSAndreas Gruenbacher return inode; 692ab9cd1cSSteven Whitehouse } 702ab9cd1cSSteven Whitehouse 712ab9cd1cSSteven Whitehouse /** 722ab9cd1cSSteven Whitehouse * gfs2_set_iop - Sets inode operations 732ab9cd1cSSteven Whitehouse * @inode: The inode with correct i_mode filled in 742ab9cd1cSSteven Whitehouse * 752ab9cd1cSSteven Whitehouse * GFS2 lookup code fills in vfs inode contents based on info obtained 762ab9cd1cSSteven Whitehouse * from directory entry inside gfs2_inode_lookup(). 772ab9cd1cSSteven Whitehouse */ 782ab9cd1cSSteven Whitehouse 792ab9cd1cSSteven Whitehouse static void gfs2_set_iop(struct inode *inode) 802ab9cd1cSSteven Whitehouse { 812ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 822ab9cd1cSSteven Whitehouse umode_t mode = inode->i_mode; 832ab9cd1cSSteven Whitehouse 842ab9cd1cSSteven Whitehouse if (S_ISREG(mode)) { 852ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_file_iops; 862ab9cd1cSSteven Whitehouse if (gfs2_localflocks(sdp)) 872ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_file_fops_nolock; 882ab9cd1cSSteven Whitehouse else 892ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_file_fops; 902ab9cd1cSSteven Whitehouse } else if (S_ISDIR(mode)) { 912ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_dir_iops; 922ab9cd1cSSteven Whitehouse if (gfs2_localflocks(sdp)) 932ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_dir_fops_nolock; 942ab9cd1cSSteven Whitehouse else 952ab9cd1cSSteven Whitehouse inode->i_fop = &gfs2_dir_fops; 962ab9cd1cSSteven Whitehouse } else if (S_ISLNK(mode)) { 972ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_symlink_iops; 982ab9cd1cSSteven Whitehouse } else { 992ab9cd1cSSteven Whitehouse inode->i_op = &gfs2_file_iops; 1002ab9cd1cSSteven Whitehouse init_special_inode(inode, inode->i_mode, inode->i_rdev); 1012ab9cd1cSSteven Whitehouse } 1022ab9cd1cSSteven Whitehouse } 1032ab9cd1cSSteven Whitehouse 1042ab9cd1cSSteven Whitehouse /** 1052ab9cd1cSSteven Whitehouse * gfs2_inode_lookup - Lookup an inode 1062ab9cd1cSSteven Whitehouse * @sb: The super block 1072ab9cd1cSSteven Whitehouse * @type: The type of the inode 1083ce37b2cSAndreas Gruenbacher * @no_addr: The inode number 1093ce37b2cSAndreas Gruenbacher * @no_formal_ino: The inode generation number 1103ce37b2cSAndreas Gruenbacher * @blktype: Requested block type (GFS2_BLKST_DINODE or GFS2_BLKST_UNLINKED; 1113ce37b2cSAndreas Gruenbacher * GFS2_BLKST_FREE do indicate not to verify) 1123ce37b2cSAndreas Gruenbacher * 1133ce37b2cSAndreas Gruenbacher * If @type is DT_UNKNOWN, the inode type is fetched from disk. 1143ce37b2cSAndreas Gruenbacher * 1153ce37b2cSAndreas Gruenbacher * If @blktype is anything other than GFS2_BLKST_FREE (which is used as a 1163ce37b2cSAndreas Gruenbacher * placeholder because it doesn't otherwise make sense), the on-disk block type 1173ce37b2cSAndreas Gruenbacher * is verified to be @blktype. 1182ab9cd1cSSteven Whitehouse * 1192ab9cd1cSSteven Whitehouse * Returns: A VFS inode, or an error 1202ab9cd1cSSteven Whitehouse */ 1212ab9cd1cSSteven Whitehouse 1222ab9cd1cSSteven Whitehouse struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, 1233ce37b2cSAndreas Gruenbacher u64 no_addr, u64 no_formal_ino, 1243ce37b2cSAndreas Gruenbacher unsigned int blktype) 1252ab9cd1cSSteven Whitehouse { 1262ab9cd1cSSteven Whitehouse struct inode *inode; 1272ab9cd1cSSteven Whitehouse struct gfs2_inode *ip; 1282ab9cd1cSSteven Whitehouse struct gfs2_glock *io_gl = NULL; 1293ce37b2cSAndreas Gruenbacher struct gfs2_holder i_gh; 1302ab9cd1cSSteven Whitehouse int error; 1312ab9cd1cSSteven Whitehouse 1326df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&i_gh); 1333ce37b2cSAndreas Gruenbacher inode = gfs2_iget(sb, no_addr); 1342ab9cd1cSSteven Whitehouse if (!inode) 135ac3beb6aSSteven Whitehouse return ERR_PTR(-ENOMEM); 1362ab9cd1cSSteven Whitehouse 137e97321faSBob Peterson ip = GFS2_I(inode); 138e97321faSBob Peterson 1392ab9cd1cSSteven Whitehouse if (inode->i_state & I_NEW) { 1402ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 1412ab9cd1cSSteven Whitehouse ip->i_no_formal_ino = no_formal_ino; 1422ab9cd1cSSteven Whitehouse 1432ab9cd1cSSteven Whitehouse error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); 1442ab9cd1cSSteven Whitehouse if (unlikely(error)) 1452ab9cd1cSSteven Whitehouse goto fail; 1462ab9cd1cSSteven Whitehouse ip->i_gl->gl_object = ip; 1472ab9cd1cSSteven Whitehouse 1482ab9cd1cSSteven Whitehouse error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl); 1492ab9cd1cSSteven Whitehouse if (unlikely(error)) 1502ab9cd1cSSteven Whitehouse goto fail_put; 1512ab9cd1cSSteven Whitehouse 1523ce37b2cSAndreas Gruenbacher if (type == DT_UNKNOWN || blktype != GFS2_BLKST_FREE) { 1533ce37b2cSAndreas Gruenbacher /* 1543ce37b2cSAndreas Gruenbacher * The GL_SKIP flag indicates to skip reading the inode 1553ce37b2cSAndreas Gruenbacher * block. We read the inode with gfs2_inode_refresh 1563ce37b2cSAndreas Gruenbacher * after possibly checking the block type. 1573ce37b2cSAndreas Gruenbacher */ 1583ce37b2cSAndreas Gruenbacher error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 1593ce37b2cSAndreas Gruenbacher GL_SKIP, &i_gh); 1603ce37b2cSAndreas Gruenbacher if (error) 1613ce37b2cSAndreas Gruenbacher goto fail_put; 1623ce37b2cSAndreas Gruenbacher 1633ce37b2cSAndreas Gruenbacher if (blktype != GFS2_BLKST_FREE) { 1643ce37b2cSAndreas Gruenbacher error = gfs2_check_blk_type(sdp, no_addr, 1653ce37b2cSAndreas Gruenbacher blktype); 1663ce37b2cSAndreas Gruenbacher if (error) 1673ce37b2cSAndreas Gruenbacher goto fail_put; 1683ce37b2cSAndreas Gruenbacher } 1693ce37b2cSAndreas Gruenbacher } 1703ce37b2cSAndreas Gruenbacher 1712ab9cd1cSSteven Whitehouse set_bit(GIF_INVALID, &ip->i_flags); 1722ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); 1732ab9cd1cSSteven Whitehouse if (unlikely(error)) 1743ce37b2cSAndreas Gruenbacher goto fail_put; 1752ab9cd1cSSteven Whitehouse 1762ab9cd1cSSteven Whitehouse ip->i_iopen_gh.gh_gl->gl_object = ip; 1772ab9cd1cSSteven Whitehouse gfs2_glock_put(io_gl); 1782ab9cd1cSSteven Whitehouse io_gl = NULL; 1792ab9cd1cSSteven Whitehouse 1802ab9cd1cSSteven Whitehouse if (type == DT_UNKNOWN) { 1812ab9cd1cSSteven Whitehouse /* Inode glock must be locked already */ 1822ab9cd1cSSteven Whitehouse error = gfs2_inode_refresh(GFS2_I(inode)); 1832ab9cd1cSSteven Whitehouse if (error) 1842ab9cd1cSSteven Whitehouse goto fail_refresh; 1852ab9cd1cSSteven Whitehouse } else { 1862ab9cd1cSSteven Whitehouse inode->i_mode = DT2IF(type); 1872ab9cd1cSSteven Whitehouse } 1882ab9cd1cSSteven Whitehouse 1892ab9cd1cSSteven Whitehouse gfs2_set_iop(inode); 1902ab9cd1cSSteven Whitehouse unlock_new_inode(inode); 1912ab9cd1cSSteven Whitehouse } 1922ab9cd1cSSteven Whitehouse 1936df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&i_gh)) 1943ce37b2cSAndreas Gruenbacher gfs2_glock_dq_uninit(&i_gh); 1952ab9cd1cSSteven Whitehouse return inode; 1962ab9cd1cSSteven Whitehouse 1972ab9cd1cSSteven Whitehouse fail_refresh: 198a6a4d98bSBob Peterson ip->i_iopen_gh.gh_flags |= GL_NOCACHE; 1992ab9cd1cSSteven Whitehouse ip->i_iopen_gh.gh_gl->gl_object = NULL; 20086d067a7SBob Peterson gfs2_glock_dq_wait(&ip->i_iopen_gh); 20186d067a7SBob Peterson gfs2_holder_uninit(&ip->i_iopen_gh); 2023ce37b2cSAndreas Gruenbacher fail_put: 2032ab9cd1cSSteven Whitehouse if (io_gl) 2042ab9cd1cSSteven Whitehouse gfs2_glock_put(io_gl); 2056df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&i_gh)) 2063ce37b2cSAndreas Gruenbacher gfs2_glock_dq_uninit(&i_gh); 2072ab9cd1cSSteven Whitehouse ip->i_gl->gl_object = NULL; 2082ab9cd1cSSteven Whitehouse fail: 2092ab9cd1cSSteven Whitehouse iget_failed(inode); 2102ab9cd1cSSteven Whitehouse return ERR_PTR(error); 2112ab9cd1cSSteven Whitehouse } 2122ab9cd1cSSteven Whitehouse 2132ab9cd1cSSteven Whitehouse struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr, 2142ab9cd1cSSteven Whitehouse u64 *no_formal_ino, unsigned int blktype) 2152ab9cd1cSSteven Whitehouse { 2162ab9cd1cSSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 2173ce37b2cSAndreas Gruenbacher struct inode *inode; 2182ab9cd1cSSteven Whitehouse int error; 2192ab9cd1cSSteven Whitehouse 2203ce37b2cSAndreas Gruenbacher inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, 0, blktype); 2212ab9cd1cSSteven Whitehouse if (IS_ERR(inode)) 2223ce37b2cSAndreas Gruenbacher return inode; 2232ab9cd1cSSteven Whitehouse 2242ab9cd1cSSteven Whitehouse /* Two extra checks for NFS only */ 2252ab9cd1cSSteven Whitehouse if (no_formal_ino) { 2262ab9cd1cSSteven Whitehouse error = -ESTALE; 2272ab9cd1cSSteven Whitehouse if (GFS2_I(inode)->i_no_formal_ino != *no_formal_ino) 2282ab9cd1cSSteven Whitehouse goto fail_iput; 2292ab9cd1cSSteven Whitehouse 2302ab9cd1cSSteven Whitehouse error = -EIO; 2312ab9cd1cSSteven Whitehouse if (GFS2_I(inode)->i_diskflags & GFS2_DIF_SYSTEM) 2322ab9cd1cSSteven Whitehouse goto fail_iput; 2332ab9cd1cSSteven Whitehouse } 2343ce37b2cSAndreas Gruenbacher return inode; 2352ab9cd1cSSteven Whitehouse 2362ab9cd1cSSteven Whitehouse fail_iput: 2372ab9cd1cSSteven Whitehouse iput(inode); 2383ce37b2cSAndreas Gruenbacher return ERR_PTR(error); 2392ab9cd1cSSteven Whitehouse } 2402ab9cd1cSSteven Whitehouse 2412ab9cd1cSSteven Whitehouse 2422ab9cd1cSSteven Whitehouse struct inode *gfs2_lookup_simple(struct inode *dip, const char *name) 2432ab9cd1cSSteven Whitehouse { 2442ab9cd1cSSteven Whitehouse struct qstr qstr; 2452ab9cd1cSSteven Whitehouse struct inode *inode; 2462ab9cd1cSSteven Whitehouse gfs2_str2qstr(&qstr, name); 2472ab9cd1cSSteven Whitehouse inode = gfs2_lookupi(dip, &qstr, 1); 2482ab9cd1cSSteven Whitehouse /* gfs2_lookupi has inconsistent callers: vfs 2492ab9cd1cSSteven Whitehouse * related routines expect NULL for no entry found, 2502ab9cd1cSSteven Whitehouse * gfs2_lookup_simple callers expect ENOENT 2512ab9cd1cSSteven Whitehouse * and do not check for NULL. 2522ab9cd1cSSteven Whitehouse */ 2532ab9cd1cSSteven Whitehouse if (inode == NULL) 2542ab9cd1cSSteven Whitehouse return ERR_PTR(-ENOENT); 2552ab9cd1cSSteven Whitehouse else 2562ab9cd1cSSteven Whitehouse return inode; 2572ab9cd1cSSteven Whitehouse } 2582ab9cd1cSSteven Whitehouse 2592ab9cd1cSSteven Whitehouse 2602ab9cd1cSSteven Whitehouse /** 2612ab9cd1cSSteven Whitehouse * gfs2_lookupi - Look up a filename in a directory and return its inode 2622ab9cd1cSSteven Whitehouse * @d_gh: An initialized holder for the directory glock 2632ab9cd1cSSteven Whitehouse * @name: The name of the inode to look for 2642ab9cd1cSSteven Whitehouse * @is_root: If 1, ignore the caller's permissions 2652ab9cd1cSSteven Whitehouse * @i_gh: An uninitialized holder for the new inode glock 2662ab9cd1cSSteven Whitehouse * 2672ab9cd1cSSteven Whitehouse * This can be called via the VFS filldir function when NFS is doing 2682ab9cd1cSSteven Whitehouse * a readdirplus and the inode which its intending to stat isn't 2692ab9cd1cSSteven Whitehouse * already in cache. In this case we must not take the directory glock 2702ab9cd1cSSteven Whitehouse * again, since the readdir call will have already taken that lock. 2712ab9cd1cSSteven Whitehouse * 2722ab9cd1cSSteven Whitehouse * Returns: errno 2732ab9cd1cSSteven Whitehouse */ 2742ab9cd1cSSteven Whitehouse 2752ab9cd1cSSteven Whitehouse struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name, 2762ab9cd1cSSteven Whitehouse int is_root) 2772ab9cd1cSSteven Whitehouse { 2782ab9cd1cSSteven Whitehouse struct super_block *sb = dir->i_sb; 2792ab9cd1cSSteven Whitehouse struct gfs2_inode *dip = GFS2_I(dir); 2802ab9cd1cSSteven Whitehouse struct gfs2_holder d_gh; 2812ab9cd1cSSteven Whitehouse int error = 0; 2822ab9cd1cSSteven Whitehouse struct inode *inode = NULL; 2832ab9cd1cSSteven Whitehouse 2846df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&d_gh); 2852ab9cd1cSSteven Whitehouse if (!name->len || name->len > GFS2_FNAMESIZE) 2862ab9cd1cSSteven Whitehouse return ERR_PTR(-ENAMETOOLONG); 2872ab9cd1cSSteven Whitehouse 2882ab9cd1cSSteven Whitehouse if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) || 2892ab9cd1cSSteven Whitehouse (name->len == 2 && memcmp(name->name, "..", 2) == 0 && 2902b0143b5SDavid Howells dir == d_inode(sb->s_root))) { 2912ab9cd1cSSteven Whitehouse igrab(dir); 2922ab9cd1cSSteven Whitehouse return dir; 2932ab9cd1cSSteven Whitehouse } 2942ab9cd1cSSteven Whitehouse 2952ab9cd1cSSteven Whitehouse if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) { 2962ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh); 2972ab9cd1cSSteven Whitehouse if (error) 2982ab9cd1cSSteven Whitehouse return ERR_PTR(error); 2992ab9cd1cSSteven Whitehouse } 3002ab9cd1cSSteven Whitehouse 3012ab9cd1cSSteven Whitehouse if (!is_root) { 30210556cb2SAl Viro error = gfs2_permission(dir, MAY_EXEC); 3032ab9cd1cSSteven Whitehouse if (error) 3042ab9cd1cSSteven Whitehouse goto out; 3052ab9cd1cSSteven Whitehouse } 3062ab9cd1cSSteven Whitehouse 3075a00f3ccSSteven Whitehouse inode = gfs2_dir_search(dir, name, false); 3082ab9cd1cSSteven Whitehouse if (IS_ERR(inode)) 3092ab9cd1cSSteven Whitehouse error = PTR_ERR(inode); 3102ab9cd1cSSteven Whitehouse out: 3116df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&d_gh)) 3122ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&d_gh); 3132ab9cd1cSSteven Whitehouse if (error == -ENOENT) 3142ab9cd1cSSteven Whitehouse return NULL; 3152ab9cd1cSSteven Whitehouse return inode ? inode : ERR_PTR(error); 3162ab9cd1cSSteven Whitehouse } 3172ab9cd1cSSteven Whitehouse 3182ab9cd1cSSteven Whitehouse /** 3192ab9cd1cSSteven Whitehouse * create_ok - OK to create a new on-disk inode here? 3202ab9cd1cSSteven Whitehouse * @dip: Directory in which dinode is to be created 3212ab9cd1cSSteven Whitehouse * @name: Name of new dinode 3222ab9cd1cSSteven Whitehouse * @mode: 3232ab9cd1cSSteven Whitehouse * 3242ab9cd1cSSteven Whitehouse * Returns: errno 3252ab9cd1cSSteven Whitehouse */ 3262ab9cd1cSSteven Whitehouse 3272ab9cd1cSSteven Whitehouse static int create_ok(struct gfs2_inode *dip, const struct qstr *name, 328175a4eb7SAl Viro umode_t mode) 3292ab9cd1cSSteven Whitehouse { 3302ab9cd1cSSteven Whitehouse int error; 3312ab9cd1cSSteven Whitehouse 33210556cb2SAl Viro error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC); 3332ab9cd1cSSteven Whitehouse if (error) 3342ab9cd1cSSteven Whitehouse return error; 3352ab9cd1cSSteven Whitehouse 3362ab9cd1cSSteven Whitehouse /* Don't create entries in an unlinked directory */ 3372ab9cd1cSSteven Whitehouse if (!dip->i_inode.i_nlink) 3382ab9cd1cSSteven Whitehouse return -ENOENT; 3392ab9cd1cSSteven Whitehouse 3402ab9cd1cSSteven Whitehouse if (dip->i_entries == (u32)-1) 3412ab9cd1cSSteven Whitehouse return -EFBIG; 3422ab9cd1cSSteven Whitehouse if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1) 3432ab9cd1cSSteven Whitehouse return -EMLINK; 3442ab9cd1cSSteven Whitehouse 3452ab9cd1cSSteven Whitehouse return 0; 3462ab9cd1cSSteven Whitehouse } 3472ab9cd1cSSteven Whitehouse 348c9aecf73SSteven Whitehouse static void munge_mode_uid_gid(const struct gfs2_inode *dip, 349c9aecf73SSteven Whitehouse struct inode *inode) 3502ab9cd1cSSteven Whitehouse { 3512ab9cd1cSSteven Whitehouse if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir && 3526b24c0d2SEric W. Biederman (dip->i_inode.i_mode & S_ISUID) && 3536b24c0d2SEric W. Biederman !uid_eq(dip->i_inode.i_uid, GLOBAL_ROOT_UID)) { 354c9aecf73SSteven Whitehouse if (S_ISDIR(inode->i_mode)) 355c9aecf73SSteven Whitehouse inode->i_mode |= S_ISUID; 3566b24c0d2SEric W. Biederman else if (!uid_eq(dip->i_inode.i_uid, current_fsuid())) 357c9aecf73SSteven Whitehouse inode->i_mode &= ~07111; 358c9aecf73SSteven Whitehouse inode->i_uid = dip->i_inode.i_uid; 3592ab9cd1cSSteven Whitehouse } else 360c9aecf73SSteven Whitehouse inode->i_uid = current_fsuid(); 3612ab9cd1cSSteven Whitehouse 3622ab9cd1cSSteven Whitehouse if (dip->i_inode.i_mode & S_ISGID) { 363c9aecf73SSteven Whitehouse if (S_ISDIR(inode->i_mode)) 364c9aecf73SSteven Whitehouse inode->i_mode |= S_ISGID; 365c9aecf73SSteven Whitehouse inode->i_gid = dip->i_inode.i_gid; 3662ab9cd1cSSteven Whitehouse } else 367c9aecf73SSteven Whitehouse inode->i_gid = current_fsgid(); 3682ab9cd1cSSteven Whitehouse } 3692ab9cd1cSSteven Whitehouse 370b2c8b3eaSSteven Whitehouse static int alloc_dinode(struct gfs2_inode *ip, u32 flags, unsigned *dblocks) 3712ab9cd1cSSteven Whitehouse { 372c9aecf73SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 373b2c8b3eaSSteven Whitehouse struct gfs2_alloc_parms ap = { .target = *dblocks, .aflags = flags, }; 3742ab9cd1cSSteven Whitehouse int error; 3752ab9cd1cSSteven Whitehouse 376b8fbf471SAbhi Das error = gfs2_quota_lock_check(ip, &ap); 3772ab9cd1cSSteven Whitehouse if (error) 3782ab9cd1cSSteven Whitehouse goto out; 3792ab9cd1cSSteven Whitehouse 3807b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(ip, &ap); 381fd4b4e04SSteven Whitehouse if (error) 382fd4b4e04SSteven Whitehouse goto out_quota; 383fd4b4e04SSteven Whitehouse 384b2c8b3eaSSteven Whitehouse error = gfs2_trans_begin(sdp, (*dblocks * RES_RG_BIT) + RES_STATFS + RES_QUOTA, 0); 3852ab9cd1cSSteven Whitehouse if (error) 3862ab9cd1cSSteven Whitehouse goto out_ipreserv; 3872ab9cd1cSSteven Whitehouse 388b2c8b3eaSSteven Whitehouse error = gfs2_alloc_blocks(ip, &ip->i_no_addr, dblocks, 1, &ip->i_generation); 389c9aecf73SSteven Whitehouse ip->i_no_formal_ino = ip->i_generation; 390c9aecf73SSteven Whitehouse ip->i_inode.i_ino = ip->i_no_addr; 391c9aecf73SSteven Whitehouse ip->i_goal = ip->i_no_addr; 3922ab9cd1cSSteven Whitehouse 3932ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 3942ab9cd1cSSteven Whitehouse 3952ab9cd1cSSteven Whitehouse out_ipreserv: 396c9aecf73SSteven Whitehouse gfs2_inplace_release(ip); 397fd4b4e04SSteven Whitehouse out_quota: 398fd4b4e04SSteven Whitehouse gfs2_quota_unlock(ip); 3992ab9cd1cSSteven Whitehouse out: 4002ab9cd1cSSteven Whitehouse return error; 4012ab9cd1cSSteven Whitehouse } 4022ab9cd1cSSteven Whitehouse 403f2741d98SSteven Whitehouse static void gfs2_init_dir(struct buffer_head *dibh, 404f2741d98SSteven Whitehouse const struct gfs2_inode *parent) 405e2d0a13bSSteven Whitehouse { 406e2d0a13bSSteven Whitehouse struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data; 407e2d0a13bSSteven Whitehouse struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1); 408e2d0a13bSSteven Whitehouse 409e2d0a13bSSteven Whitehouse gfs2_qstr2dirent(&gfs2_qdot, GFS2_DIRENT_SIZE(gfs2_qdot.len), dent); 410e2d0a13bSSteven Whitehouse dent->de_inum = di->di_num; /* already GFS2 endian */ 411e2d0a13bSSteven Whitehouse dent->de_type = cpu_to_be16(DT_DIR); 412e2d0a13bSSteven Whitehouse 413e2d0a13bSSteven Whitehouse dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1)); 414e2d0a13bSSteven Whitehouse gfs2_qstr2dirent(&gfs2_qdotdot, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent); 415e2d0a13bSSteven Whitehouse gfs2_inum_out(parent, dent); 416e2d0a13bSSteven Whitehouse dent->de_type = cpu_to_be16(DT_DIR); 417e2d0a13bSSteven Whitehouse 418e2d0a13bSSteven Whitehouse } 419e2d0a13bSSteven Whitehouse 4202ab9cd1cSSteven Whitehouse /** 421b2c8b3eaSSteven Whitehouse * gfs2_init_xattr - Initialise an xattr block for a new inode 422b2c8b3eaSSteven Whitehouse * @ip: The inode in question 423b2c8b3eaSSteven Whitehouse * 424b2c8b3eaSSteven Whitehouse * This sets up an empty xattr block for a new inode, ready to 425b2c8b3eaSSteven Whitehouse * take any ACLs, LSM xattrs, etc. 426b2c8b3eaSSteven Whitehouse */ 427b2c8b3eaSSteven Whitehouse 428b2c8b3eaSSteven Whitehouse static void gfs2_init_xattr(struct gfs2_inode *ip) 429b2c8b3eaSSteven Whitehouse { 430b2c8b3eaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 431b2c8b3eaSSteven Whitehouse struct buffer_head *bh; 432b2c8b3eaSSteven Whitehouse struct gfs2_ea_header *ea; 433b2c8b3eaSSteven Whitehouse 434b2c8b3eaSSteven Whitehouse bh = gfs2_meta_new(ip->i_gl, ip->i_eattr); 435b2c8b3eaSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, bh); 436b2c8b3eaSSteven Whitehouse gfs2_metatype_set(bh, GFS2_METATYPE_EA, GFS2_FORMAT_EA); 437b2c8b3eaSSteven Whitehouse gfs2_buffer_clear_tail(bh, sizeof(struct gfs2_meta_header)); 438b2c8b3eaSSteven Whitehouse 439b2c8b3eaSSteven Whitehouse ea = GFS2_EA_BH2FIRST(bh); 440b2c8b3eaSSteven Whitehouse ea->ea_rec_len = cpu_to_be32(sdp->sd_jbsize); 441b2c8b3eaSSteven Whitehouse ea->ea_type = GFS2_EATYPE_UNUSED; 442b2c8b3eaSSteven Whitehouse ea->ea_flags = GFS2_EAFLAG_LAST; 443b2c8b3eaSSteven Whitehouse 444b2c8b3eaSSteven Whitehouse brelse(bh); 445b2c8b3eaSSteven Whitehouse } 446b2c8b3eaSSteven Whitehouse 447b2c8b3eaSSteven Whitehouse /** 4482ab9cd1cSSteven Whitehouse * init_dinode - Fill in a new dinode structure 449f2741d98SSteven Whitehouse * @dip: The directory this inode is being created in 450c9aecf73SSteven Whitehouse * @ip: The inode 451f2741d98SSteven Whitehouse * @symname: The symlink destination (if a symlink) 452f2741d98SSteven Whitehouse * @bhp: The buffer head (returned to caller) 4532ab9cd1cSSteven Whitehouse * 4542ab9cd1cSSteven Whitehouse */ 4552ab9cd1cSSteven Whitehouse 456c9aecf73SSteven Whitehouse static void init_dinode(struct gfs2_inode *dip, struct gfs2_inode *ip, 45779ba7480SSteven Whitehouse const char *symname) 4582ab9cd1cSSteven Whitehouse { 4592ab9cd1cSSteven Whitehouse struct gfs2_dinode *di; 4602ab9cd1cSSteven Whitehouse struct buffer_head *dibh; 4612ab9cd1cSSteven Whitehouse 462c9aecf73SSteven Whitehouse dibh = gfs2_meta_new(ip->i_gl, ip->i_no_addr); 463350a9b0aSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, dibh); 4642ab9cd1cSSteven Whitehouse di = (struct gfs2_dinode *)dibh->b_data; 46579ba7480SSteven Whitehouse gfs2_dinode_out(ip, di); 4662ab9cd1cSSteven Whitehouse 467c9aecf73SSteven Whitehouse di->di_major = cpu_to_be32(MAJOR(ip->i_inode.i_rdev)); 468c9aecf73SSteven Whitehouse di->di_minor = cpu_to_be32(MINOR(ip->i_inode.i_rdev)); 4692ab9cd1cSSteven Whitehouse di->__pad1 = 0; 4702ab9cd1cSSteven Whitehouse di->__pad2 = 0; 4712ab9cd1cSSteven Whitehouse di->__pad3 = 0; 4722ab9cd1cSSteven Whitehouse memset(&di->__pad4, 0, sizeof(di->__pad4)); 4732ab9cd1cSSteven Whitehouse memset(&di->di_reserved, 0, sizeof(di->di_reserved)); 47479ba7480SSteven Whitehouse gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode)); 4752ab9cd1cSSteven Whitehouse 476c9aecf73SSteven Whitehouse switch(ip->i_inode.i_mode & S_IFMT) { 477160b4026SSteven Whitehouse case S_IFDIR: 478e2d0a13bSSteven Whitehouse gfs2_init_dir(dibh, dip); 479160b4026SSteven Whitehouse break; 480160b4026SSteven Whitehouse case S_IFLNK: 481c9aecf73SSteven Whitehouse memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname, ip->i_inode.i_size); 482160b4026SSteven Whitehouse break; 483e2d0a13bSSteven Whitehouse } 484e2d0a13bSSteven Whitehouse 4852ab9cd1cSSteven Whitehouse set_buffer_uptodate(dibh); 48679ba7480SSteven Whitehouse brelse(dibh); 4872ab9cd1cSSteven Whitehouse } 4882ab9cd1cSSteven Whitehouse 489534cf9caSSteven Whitehouse /** 490534cf9caSSteven Whitehouse * gfs2_trans_da_blocks - Calculate number of blocks to link inode 491534cf9caSSteven Whitehouse * @dip: The directory we are linking into 492534cf9caSSteven Whitehouse * @da: The dir add information 493534cf9caSSteven Whitehouse * @nr_inodes: The number of inodes involved 494534cf9caSSteven Whitehouse * 495534cf9caSSteven Whitehouse * This calculate the number of blocks we need to reserve in a 496534cf9caSSteven Whitehouse * transaction to link @nr_inodes into a directory. In most cases 497534cf9caSSteven Whitehouse * @nr_inodes will be 2 (the directory plus the inode being linked in) 498534cf9caSSteven Whitehouse * but in case of rename, 4 may be required. 499534cf9caSSteven Whitehouse * 500534cf9caSSteven Whitehouse * Returns: Number of blocks 501534cf9caSSteven Whitehouse */ 502534cf9caSSteven Whitehouse 503534cf9caSSteven Whitehouse static unsigned gfs2_trans_da_blks(const struct gfs2_inode *dip, 504534cf9caSSteven Whitehouse const struct gfs2_diradd *da, 505534cf9caSSteven Whitehouse unsigned nr_inodes) 506534cf9caSSteven Whitehouse { 507534cf9caSSteven Whitehouse return da->nr_blocks + gfs2_rg_blocks(dip, da->nr_blocks) + 508534cf9caSSteven Whitehouse (nr_inodes * RES_DINODE) + RES_QUOTA + RES_STATFS; 509534cf9caSSteven Whitehouse } 510534cf9caSSteven Whitehouse 5112ab9cd1cSSteven Whitehouse static int link_dinode(struct gfs2_inode *dip, const struct qstr *name, 5123c1c0ae1SSteven Whitehouse struct gfs2_inode *ip, struct gfs2_diradd *da) 5132ab9cd1cSSteven Whitehouse { 5142ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); 5153c1c0ae1SSteven Whitehouse struct gfs2_alloc_parms ap = { .target = da->nr_blocks, }; 5162ab9cd1cSSteven Whitehouse int error; 5172ab9cd1cSSteven Whitehouse 5183c1c0ae1SSteven Whitehouse if (da->nr_blocks) { 519b8fbf471SAbhi Das error = gfs2_quota_lock_check(dip, &ap); 5202ab9cd1cSSteven Whitehouse if (error) 5212ab9cd1cSSteven Whitehouse goto fail_quota_locks; 5222ab9cd1cSSteven Whitehouse 5237b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(dip, &ap); 5242ab9cd1cSSteven Whitehouse if (error) 5252ab9cd1cSSteven Whitehouse goto fail_quota_locks; 5262ab9cd1cSSteven Whitehouse 527534cf9caSSteven Whitehouse error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(dip, da, 2), 0); 5282ab9cd1cSSteven Whitehouse if (error) 5292ab9cd1cSSteven Whitehouse goto fail_ipreserv; 5302ab9cd1cSSteven Whitehouse } else { 5312ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0); 5322ab9cd1cSSteven Whitehouse if (error) 5332ab9cd1cSSteven Whitehouse goto fail_quota_locks; 5342ab9cd1cSSteven Whitehouse } 5352ab9cd1cSSteven Whitehouse 5362b47dad8SSteven Whitehouse error = gfs2_dir_add(&dip->i_inode, name, ip, da); 5372ab9cd1cSSteven Whitehouse 5382ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 5392ab9cd1cSSteven Whitehouse fail_ipreserv: 5402ab9cd1cSSteven Whitehouse gfs2_inplace_release(dip); 5412ab9cd1cSSteven Whitehouse fail_quota_locks: 5422ab9cd1cSSteven Whitehouse gfs2_quota_unlock(dip); 5432ab9cd1cSSteven Whitehouse return error; 5442ab9cd1cSSteven Whitehouse } 5452ab9cd1cSSteven Whitehouse 54646cc1e5fSH Hartley Sweeten static int gfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array, 5479d8f13baSMimi Zohar void *fs_info) 5482ab9cd1cSSteven Whitehouse { 5499d8f13baSMimi Zohar const struct xattr *xattr; 5509d8f13baSMimi Zohar int err = 0; 5512ab9cd1cSSteven Whitehouse 5529d8f13baSMimi Zohar for (xattr = xattr_array; xattr->name != NULL; xattr++) { 5539d8f13baSMimi Zohar err = __gfs2_xattr_set(inode, xattr->name, xattr->value, 5549d8f13baSMimi Zohar xattr->value_len, 0, 5559d8f13baSMimi Zohar GFS2_EATYPE_SECURITY); 5569d8f13baSMimi Zohar if (err < 0) 5579d8f13baSMimi Zohar break; 5589d8f13baSMimi Zohar } 5592ab9cd1cSSteven Whitehouse return err; 5602ab9cd1cSSteven Whitehouse } 5612ab9cd1cSSteven Whitehouse 5622ab9cd1cSSteven Whitehouse /** 563f2741d98SSteven Whitehouse * gfs2_create_inode - Create a new inode 564f2741d98SSteven Whitehouse * @dir: The parent directory 565f2741d98SSteven Whitehouse * @dentry: The new dentry 5666d4ade98SSteven Whitehouse * @file: If non-NULL, the file which is being opened 567f2741d98SSteven Whitehouse * @mode: The permissions on the new inode 568f2741d98SSteven Whitehouse * @dev: For device nodes, this is the device number 569f2741d98SSteven Whitehouse * @symname: For symlinks, this is the link destination 570f2741d98SSteven Whitehouse * @size: The initial size of the inode (ignored for directories) 5712ab9cd1cSSteven Whitehouse * 572f2741d98SSteven Whitehouse * Returns: 0 on success, or error code 5732ab9cd1cSSteven Whitehouse */ 5742ab9cd1cSSteven Whitehouse 575f2741d98SSteven Whitehouse static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, 5766d4ade98SSteven Whitehouse struct file *file, 577175a4eb7SAl Viro umode_t mode, dev_t dev, const char *symname, 5786d4ade98SSteven Whitehouse unsigned int size, int excl, int *opened) 5792ab9cd1cSSteven Whitehouse { 580f2741d98SSteven Whitehouse const struct qstr *name = &dentry->d_name; 581e01580bfSChristoph Hellwig struct posix_acl *default_acl, *acl; 582f2741d98SSteven Whitehouse struct gfs2_holder ghs[2]; 5832ab9cd1cSSteven Whitehouse struct inode *inode = NULL; 5848e2e0047SBob Peterson struct gfs2_inode *dip = GFS2_I(dir), *ip; 5852ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); 586a4923865SBob Peterson struct gfs2_glock *io_gl = NULL; 587783013c0SBob Peterson int error, free_vfs_inode = 1; 5889dbe9610SSteven Whitehouse u32 aflags = 0; 589b2c8b3eaSSteven Whitehouse unsigned blocks = 1; 59019aeb5a6SBob Peterson struct gfs2_diradd da = { .bh = NULL, .save_loc = 1, }; 5912ab9cd1cSSteven Whitehouse 5922ab9cd1cSSteven Whitehouse if (!name->len || name->len > GFS2_FNAMESIZE) 593f2741d98SSteven Whitehouse return -ENAMETOOLONG; 5942ab9cd1cSSteven Whitehouse 595b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(dip); 5960a305e49SBob Peterson if (error) 5970a305e49SBob Peterson return error; 5980a305e49SBob Peterson 599fd4b4e04SSteven Whitehouse error = gfs2_rindex_update(sdp); 600fd4b4e04SSteven Whitehouse if (error) 601fd4b4e04SSteven Whitehouse return error; 602fd4b4e04SSteven Whitehouse 603f2741d98SSteven Whitehouse error = gfs2_glock_nq_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 6042ab9cd1cSSteven Whitehouse if (error) 6052ab9cd1cSSteven Whitehouse goto fail; 6062ab9cd1cSSteven Whitehouse 6072ab9cd1cSSteven Whitehouse error = create_ok(dip, name, mode); 6082ab9cd1cSSteven Whitehouse if (error) 6092ab9cd1cSSteven Whitehouse goto fail_gunlock; 6102ab9cd1cSSteven Whitehouse 6115a00f3ccSSteven Whitehouse inode = gfs2_dir_search(dir, &dentry->d_name, !S_ISREG(mode) || excl); 6125a00f3ccSSteven Whitehouse error = PTR_ERR(inode); 6135a00f3ccSSteven Whitehouse if (!IS_ERR(inode)) { 614571a4b57SAl Viro if (S_ISDIR(inode->i_mode)) { 615571a4b57SAl Viro iput(inode); 616571a4b57SAl Viro inode = ERR_PTR(-EISDIR); 617571a4b57SAl Viro goto fail_gunlock; 618571a4b57SAl Viro } 61944bb31baSAl Viro d_instantiate(dentry, inode); 6206d4ade98SSteven Whitehouse error = 0; 6210d0d1107SMiklos Szeredi if (file) { 62244bb31baSAl Viro if (S_ISREG(inode->i_mode)) 6235ca1db41SMiklos Szeredi error = finish_open(file, dentry, gfs2_open_common, opened); 62444bb31baSAl Viro else 62544bb31baSAl Viro error = finish_no_open(file, NULL); 6265ca1db41SMiklos Szeredi } 6275a00f3ccSSteven Whitehouse gfs2_glock_dq_uninit(ghs); 6286d4ade98SSteven Whitehouse return error; 6295a00f3ccSSteven Whitehouse } else if (error != -ENOENT) { 6305a00f3ccSSteven Whitehouse goto fail_gunlock; 6315a00f3ccSSteven Whitehouse } 6325a00f3ccSSteven Whitehouse 6333c1c0ae1SSteven Whitehouse error = gfs2_diradd_alloc_required(dir, name, &da); 634fd4b4e04SSteven Whitehouse if (error < 0) 635fd4b4e04SSteven Whitehouse goto fail_gunlock; 636fd4b4e04SSteven Whitehouse 637c9aecf73SSteven Whitehouse inode = new_inode(sdp->sd_vfs); 638fd4b4e04SSteven Whitehouse error = -ENOMEM; 639fd4b4e04SSteven Whitehouse if (!inode) 640fd4b4e04SSteven Whitehouse goto fail_gunlock; 641fd4b4e04SSteven Whitehouse 642e01580bfSChristoph Hellwig error = posix_acl_create(dir, &mode, &default_acl, &acl); 643e01580bfSChristoph Hellwig if (error) 644783013c0SBob Peterson goto fail_gunlock; 645e01580bfSChristoph Hellwig 6468e2e0047SBob Peterson ip = GFS2_I(inode); 647b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ip); 648ff7f4cb4SSteven Whitehouse if (error) 649e01580bfSChristoph Hellwig goto fail_free_acls; 650c9aecf73SSteven Whitehouse 651c9aecf73SSteven Whitehouse inode->i_mode = mode; 65279ba7480SSteven Whitehouse set_nlink(inode, S_ISDIR(mode) ? 2 : 1); 653c9aecf73SSteven Whitehouse inode->i_rdev = dev; 654c9aecf73SSteven Whitehouse inode->i_size = size; 655fd4b4e04SSteven Whitehouse inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; 65628fb3027SSteven Whitehouse gfs2_set_inode_blocks(inode, 1); 657c9aecf73SSteven Whitehouse munge_mode_uid_gid(dip, inode); 65800a158beSAbhi Das check_and_update_goal(dip); 659c9aecf73SSteven Whitehouse ip->i_goal = dip->i_goal; 66028fb3027SSteven Whitehouse ip->i_diskflags = 0; 66128fb3027SSteven Whitehouse ip->i_eattr = 0; 66228fb3027SSteven Whitehouse ip->i_height = 0; 66328fb3027SSteven Whitehouse ip->i_depth = 0; 66428fb3027SSteven Whitehouse ip->i_entries = 0; 66528fb3027SSteven Whitehouse 66628fb3027SSteven Whitehouse switch(mode & S_IFMT) { 66728fb3027SSteven Whitehouse case S_IFREG: 66828fb3027SSteven Whitehouse if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) || 66928fb3027SSteven Whitehouse gfs2_tune_get(sdp, gt_new_files_jdata)) 67028fb3027SSteven Whitehouse ip->i_diskflags |= GFS2_DIF_JDATA; 67128fb3027SSteven Whitehouse gfs2_set_aops(inode); 67228fb3027SSteven Whitehouse break; 67328fb3027SSteven Whitehouse case S_IFDIR: 67428fb3027SSteven Whitehouse ip->i_diskflags |= (dip->i_diskflags & GFS2_DIF_INHERIT_JDATA); 67528fb3027SSteven Whitehouse ip->i_diskflags |= GFS2_DIF_JDATA; 67628fb3027SSteven Whitehouse ip->i_entries = 2; 67728fb3027SSteven Whitehouse break; 67828fb3027SSteven Whitehouse } 679acc546fdSAbhi Das 680acc546fdSAbhi Das /* Force SYSTEM flag on all files and subdirs of a SYSTEM directory */ 681acc546fdSAbhi Das if (dip->i_diskflags & GFS2_DIF_SYSTEM) 682acc546fdSAbhi Das ip->i_diskflags |= GFS2_DIF_SYSTEM; 683acc546fdSAbhi Das 68428fb3027SSteven Whitehouse gfs2_set_inode_flags(inode); 685c9aecf73SSteven Whitehouse 6862b0143b5SDavid Howells if ((GFS2_I(d_inode(sdp->sd_root_dir)) == dip) || 6879dbe9610SSteven Whitehouse (dip->i_diskflags & GFS2_DIF_TOPDIR)) 6889dbe9610SSteven Whitehouse aflags |= GFS2_AF_ORLOV; 6899dbe9610SSteven Whitehouse 690b2c8b3eaSSteven Whitehouse if (default_acl || acl) 691b2c8b3eaSSteven Whitehouse blocks++; 692b2c8b3eaSSteven Whitehouse 693b2c8b3eaSSteven Whitehouse error = alloc_dinode(ip, aflags, &blocks); 694c9aecf73SSteven Whitehouse if (error) 695c9aecf73SSteven Whitehouse goto fail_free_inode; 696c9aecf73SSteven Whitehouse 697b2c8b3eaSSteven Whitehouse gfs2_set_inode_blocks(inode, blocks); 698b2c8b3eaSSteven Whitehouse 699c9aecf73SSteven Whitehouse error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); 700c9aecf73SSteven Whitehouse if (error) 701c9aecf73SSteven Whitehouse goto fail_free_inode; 702c9aecf73SSteven Whitehouse 7031e2d9d44SBob Peterson ip->i_gl->gl_object = ip; 704c9aecf73SSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1); 705c9aecf73SSteven Whitehouse if (error) 706c9aecf73SSteven Whitehouse goto fail_free_inode; 707c9aecf73SSteven Whitehouse 708b2c8b3eaSSteven Whitehouse error = gfs2_trans_begin(sdp, blocks, 0); 709c9aecf73SSteven Whitehouse if (error) 710ff7f4cb4SSteven Whitehouse goto fail_gunlock2; 7110a305e49SBob Peterson 712b2c8b3eaSSteven Whitehouse if (blocks > 1) { 713b2c8b3eaSSteven Whitehouse ip->i_eattr = ip->i_no_addr + 1; 714b2c8b3eaSSteven Whitehouse gfs2_init_xattr(ip); 715b2c8b3eaSSteven Whitehouse } 71679ba7480SSteven Whitehouse init_dinode(dip, ip, symname); 717fd4b4e04SSteven Whitehouse gfs2_trans_end(sdp); 718fd4b4e04SSteven Whitehouse 719c9aecf73SSteven Whitehouse error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_iopen_glops, CREATE, &io_gl); 720c9aecf73SSteven Whitehouse if (error) 721c9aecf73SSteven Whitehouse goto fail_gunlock2; 722c9aecf73SSteven Whitehouse 723a4923865SBob Peterson BUG_ON(test_and_set_bit(GLF_INODE_CREATING, &io_gl->gl_flags)); 724a4923865SBob Peterson 725c9aecf73SSteven Whitehouse error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); 726c9aecf73SSteven Whitehouse if (error) 727c9aecf73SSteven Whitehouse goto fail_gunlock2; 728c9aecf73SSteven Whitehouse 729c9aecf73SSteven Whitehouse ip->i_iopen_gh.gh_gl->gl_object = ip; 730c9aecf73SSteven Whitehouse gfs2_glock_put(io_gl); 731c9aecf73SSteven Whitehouse gfs2_set_iop(inode); 732c9aecf73SSteven Whitehouse insert_inode_hash(inode); 733c9aecf73SSteven Whitehouse 734783013c0SBob Peterson free_vfs_inode = 0; /* After this point, the inode is no longer 735783013c0SBob Peterson considered free. Any failures need to undo 736783013c0SBob Peterson the gfs2 structures. */ 737e01580bfSChristoph Hellwig if (default_acl) { 7381a39ba99SAl Viro error = __gfs2_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); 739e01580bfSChristoph Hellwig posix_acl_release(default_acl); 740e01580bfSChristoph Hellwig } 741e01580bfSChristoph Hellwig if (acl) { 742e01580bfSChristoph Hellwig if (!error) 7431a39ba99SAl Viro error = __gfs2_set_acl(inode, acl, ACL_TYPE_ACCESS); 744e01580bfSChristoph Hellwig posix_acl_release(acl); 745e01580bfSChristoph Hellwig } 746e01580bfSChristoph Hellwig 7472ab9cd1cSSteven Whitehouse if (error) 748c9aecf73SSteven Whitehouse goto fail_gunlock3; 7492ab9cd1cSSteven Whitehouse 750f45dc26dSBob Peterson error = security_inode_init_security(&ip->i_inode, &dip->i_inode, name, 751f45dc26dSBob Peterson &gfs2_initxattrs, NULL); 7522ab9cd1cSSteven Whitehouse if (error) 753c9aecf73SSteven Whitehouse goto fail_gunlock3; 7542ab9cd1cSSteven Whitehouse 7553c1c0ae1SSteven Whitehouse error = link_dinode(dip, name, ip, &da); 7562ab9cd1cSSteven Whitehouse if (error) 757c9aecf73SSteven Whitehouse goto fail_gunlock3; 7582ab9cd1cSSteven Whitehouse 75979ba7480SSteven Whitehouse mark_inode_dirty(inode); 7606d4ade98SSteven Whitehouse d_instantiate(dentry, inode); 761c5bf8fefSMiklos Szeredi if (file) { 762c5bf8fefSMiklos Szeredi *opened |= FILE_CREATED; 7636d4ade98SSteven Whitehouse error = finish_open(file, dentry, gfs2_open_common, opened); 764c5bf8fefSMiklos Szeredi } 76528fb3027SSteven Whitehouse gfs2_glock_dq_uninit(ghs); 76628fb3027SSteven Whitehouse gfs2_glock_dq_uninit(ghs + 1); 767a4923865SBob Peterson clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags); 7686d4ade98SSteven Whitehouse return error; 7692ab9cd1cSSteven Whitehouse 770c9aecf73SSteven Whitehouse fail_gunlock3: 771783013c0SBob Peterson gfs2_glock_dq_uninit(&ip->i_iopen_gh); 772783013c0SBob Peterson gfs2_glock_put(io_gl); 7732ab9cd1cSSteven Whitehouse fail_gunlock2: 774a4923865SBob Peterson if (io_gl) 775a4923865SBob Peterson clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags); 7762ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(ghs + 1); 777c9aecf73SSteven Whitehouse fail_free_inode: 778c9aecf73SSteven Whitehouse if (ip->i_gl) 779c9aecf73SSteven Whitehouse gfs2_glock_put(ip->i_gl); 780b54e9a0bSBob Peterson gfs2_rsqa_delete(ip, NULL); 781e01580bfSChristoph Hellwig fail_free_acls: 782e01580bfSChristoph Hellwig if (default_acl) 783e01580bfSChristoph Hellwig posix_acl_release(default_acl); 784e01580bfSChristoph Hellwig if (acl) 785e01580bfSChristoph Hellwig posix_acl_release(acl); 7862ab9cd1cSSteven Whitehouse fail_gunlock: 7872b47dad8SSteven Whitehouse gfs2_dir_no_add(&da); 788f2741d98SSteven Whitehouse gfs2_glock_dq_uninit(ghs); 78940ac218fSSteven Whitehouse if (inode && !IS_ERR(inode)) { 79079ba7480SSteven Whitehouse clear_nlink(inode); 79105978803SAbhi Das if (!free_vfs_inode) 79279ba7480SSteven Whitehouse mark_inode_dirty(inode); 79305978803SAbhi Das set_bit(free_vfs_inode ? GIF_FREE_VFS_INODE : GIF_ALLOC_FAILED, 79405978803SAbhi Das &GFS2_I(inode)->i_flags); 79540ac218fSSteven Whitehouse iput(inode); 79640ac218fSSteven Whitehouse } 7972ab9cd1cSSteven Whitehouse fail: 798f2741d98SSteven Whitehouse return error; 7992ab9cd1cSSteven Whitehouse } 800f2741d98SSteven Whitehouse 8012ab9cd1cSSteven Whitehouse /** 8022ab9cd1cSSteven Whitehouse * gfs2_create - Create a file 8032ab9cd1cSSteven Whitehouse * @dir: The directory in which to create the file 8042ab9cd1cSSteven Whitehouse * @dentry: The dentry of the new file 8052ab9cd1cSSteven Whitehouse * @mode: The mode of the new file 8062ab9cd1cSSteven Whitehouse * 8072ab9cd1cSSteven Whitehouse * Returns: errno 8082ab9cd1cSSteven Whitehouse */ 8092ab9cd1cSSteven Whitehouse 8102ab9cd1cSSteven Whitehouse static int gfs2_create(struct inode *dir, struct dentry *dentry, 811ebfc3b49SAl Viro umode_t mode, bool excl) 8122ab9cd1cSSteven Whitehouse { 8136d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, NULL, S_IFREG | mode, 0, NULL, 0, excl, NULL); 8142ab9cd1cSSteven Whitehouse } 8152ab9cd1cSSteven Whitehouse 8162ab9cd1cSSteven Whitehouse /** 8176d4ade98SSteven Whitehouse * __gfs2_lookup - Look up a filename in a directory and return its inode 8182ab9cd1cSSteven Whitehouse * @dir: The directory inode 8192ab9cd1cSSteven Whitehouse * @dentry: The dentry of the new inode 8206d4ade98SSteven Whitehouse * @file: File to be opened 8216d4ade98SSteven Whitehouse * @opened: atomic_open flags 8222ab9cd1cSSteven Whitehouse * 8232ab9cd1cSSteven Whitehouse * 8242ab9cd1cSSteven Whitehouse * Returns: errno 8252ab9cd1cSSteven Whitehouse */ 8262ab9cd1cSSteven Whitehouse 8276d4ade98SSteven Whitehouse static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry, 8286d4ade98SSteven Whitehouse struct file *file, int *opened) 8292ab9cd1cSSteven Whitehouse { 8306d4ade98SSteven Whitehouse struct inode *inode; 8316d4ade98SSteven Whitehouse struct dentry *d; 8322ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 8336d4ade98SSteven Whitehouse struct gfs2_glock *gl; 8342ab9cd1cSSteven Whitehouse int error; 8356d4ade98SSteven Whitehouse 8366d4ade98SSteven Whitehouse inode = gfs2_lookupi(dir, &dentry->d_name, 0); 8377b7a9115SBenjamin Coddington if (inode == NULL) { 8387b7a9115SBenjamin Coddington d_add(dentry, NULL); 8396d4ade98SSteven Whitehouse return NULL; 8407b7a9115SBenjamin Coddington } 8416d4ade98SSteven Whitehouse if (IS_ERR(inode)) 8426d4ade98SSteven Whitehouse return ERR_CAST(inode); 8436d4ade98SSteven Whitehouse 8446d4ade98SSteven Whitehouse gl = GFS2_I(inode)->i_gl; 8452ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); 8462ab9cd1cSSteven Whitehouse if (error) { 8472ab9cd1cSSteven Whitehouse iput(inode); 8482ab9cd1cSSteven Whitehouse return ERR_PTR(error); 8492ab9cd1cSSteven Whitehouse } 8506d4ade98SSteven Whitehouse 8516d4ade98SSteven Whitehouse d = d_splice_alias(inode, dentry); 852d57b9c9aSJ. Bruce Fields if (IS_ERR(d)) { 853d57b9c9aSJ. Bruce Fields gfs2_glock_dq_uninit(&gh); 854d57b9c9aSJ. Bruce Fields return d; 855d57b9c9aSJ. Bruce Fields } 8566d4ade98SSteven Whitehouse if (file && S_ISREG(inode->i_mode)) 8576d4ade98SSteven Whitehouse error = finish_open(file, dentry, gfs2_open_common, opened); 8586d4ade98SSteven Whitehouse 8592ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&gh); 8605ca1db41SMiklos Szeredi if (error) { 8615ca1db41SMiklos Szeredi dput(d); 8626d4ade98SSteven Whitehouse return ERR_PTR(error); 8635ca1db41SMiklos Szeredi } 8646d4ade98SSteven Whitehouse return d; 8652ab9cd1cSSteven Whitehouse } 8666d4ade98SSteven Whitehouse 8676d4ade98SSteven Whitehouse static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry, 8686d4ade98SSteven Whitehouse unsigned flags) 8696d4ade98SSteven Whitehouse { 8706d4ade98SSteven Whitehouse return __gfs2_lookup(dir, dentry, NULL, NULL); 8712ab9cd1cSSteven Whitehouse } 8722ab9cd1cSSteven Whitehouse 8732ab9cd1cSSteven Whitehouse /** 8742ab9cd1cSSteven Whitehouse * gfs2_link - Link to a file 8752ab9cd1cSSteven Whitehouse * @old_dentry: The inode to link 8762ab9cd1cSSteven Whitehouse * @dir: Add link to this directory 8772ab9cd1cSSteven Whitehouse * @dentry: The name of the link 8782ab9cd1cSSteven Whitehouse * 8792ab9cd1cSSteven Whitehouse * Link the inode in "old_dentry" into the directory "dir" with the 8802ab9cd1cSSteven Whitehouse * name in "dentry". 8812ab9cd1cSSteven Whitehouse * 8822ab9cd1cSSteven Whitehouse * Returns: errno 8832ab9cd1cSSteven Whitehouse */ 8842ab9cd1cSSteven Whitehouse 8852ab9cd1cSSteven Whitehouse static int gfs2_link(struct dentry *old_dentry, struct inode *dir, 8862ab9cd1cSSteven Whitehouse struct dentry *dentry) 8872ab9cd1cSSteven Whitehouse { 8882ab9cd1cSSteven Whitehouse struct gfs2_inode *dip = GFS2_I(dir); 8892ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 8902b0143b5SDavid Howells struct inode *inode = d_inode(old_dentry); 8912ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 8922ab9cd1cSSteven Whitehouse struct gfs2_holder ghs[2]; 8932ab9cd1cSSteven Whitehouse struct buffer_head *dibh; 89419aeb5a6SBob Peterson struct gfs2_diradd da = { .bh = NULL, .save_loc = 1, }; 8952ab9cd1cSSteven Whitehouse int error; 8962ab9cd1cSSteven Whitehouse 8972ab9cd1cSSteven Whitehouse if (S_ISDIR(inode->i_mode)) 8982ab9cd1cSSteven Whitehouse return -EPERM; 8992ab9cd1cSSteven Whitehouse 900b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(dip); 9010a305e49SBob Peterson if (error) 9020a305e49SBob Peterson return error; 9030a305e49SBob Peterson 9042ab9cd1cSSteven Whitehouse gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 9052ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); 9062ab9cd1cSSteven Whitehouse 9072ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs); /* parent */ 9082ab9cd1cSSteven Whitehouse if (error) 9092ab9cd1cSSteven Whitehouse goto out_parent; 9102ab9cd1cSSteven Whitehouse 9112ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + 1); /* child */ 9122ab9cd1cSSteven Whitehouse if (error) 9132ab9cd1cSSteven Whitehouse goto out_child; 9142ab9cd1cSSteven Whitehouse 9152ab9cd1cSSteven Whitehouse error = -ENOENT; 9162ab9cd1cSSteven Whitehouse if (inode->i_nlink == 0) 9172ab9cd1cSSteven Whitehouse goto out_gunlock; 9182ab9cd1cSSteven Whitehouse 91910556cb2SAl Viro error = gfs2_permission(dir, MAY_WRITE | MAY_EXEC); 9202ab9cd1cSSteven Whitehouse if (error) 9212ab9cd1cSSteven Whitehouse goto out_gunlock; 9222ab9cd1cSSteven Whitehouse 9232ab9cd1cSSteven Whitehouse error = gfs2_dir_check(dir, &dentry->d_name, NULL); 9242ab9cd1cSSteven Whitehouse switch (error) { 9252ab9cd1cSSteven Whitehouse case -ENOENT: 9262ab9cd1cSSteven Whitehouse break; 9272ab9cd1cSSteven Whitehouse case 0: 9282ab9cd1cSSteven Whitehouse error = -EEXIST; 9292ab9cd1cSSteven Whitehouse default: 9302ab9cd1cSSteven Whitehouse goto out_gunlock; 9312ab9cd1cSSteven Whitehouse } 9322ab9cd1cSSteven Whitehouse 9332ab9cd1cSSteven Whitehouse error = -EINVAL; 9342ab9cd1cSSteven Whitehouse if (!dip->i_inode.i_nlink) 9352ab9cd1cSSteven Whitehouse goto out_gunlock; 9362ab9cd1cSSteven Whitehouse error = -EFBIG; 9372ab9cd1cSSteven Whitehouse if (dip->i_entries == (u32)-1) 9382ab9cd1cSSteven Whitehouse goto out_gunlock; 9392ab9cd1cSSteven Whitehouse error = -EPERM; 9402ab9cd1cSSteven Whitehouse if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) 9412ab9cd1cSSteven Whitehouse goto out_gunlock; 9422ab9cd1cSSteven Whitehouse error = -EINVAL; 9432ab9cd1cSSteven Whitehouse if (!ip->i_inode.i_nlink) 9442ab9cd1cSSteven Whitehouse goto out_gunlock; 9452ab9cd1cSSteven Whitehouse error = -EMLINK; 9462ab9cd1cSSteven Whitehouse if (ip->i_inode.i_nlink == (u32)-1) 9472ab9cd1cSSteven Whitehouse goto out_gunlock; 9482ab9cd1cSSteven Whitehouse 9493c1c0ae1SSteven Whitehouse error = gfs2_diradd_alloc_required(dir, &dentry->d_name, &da); 9502ab9cd1cSSteven Whitehouse if (error < 0) 9512ab9cd1cSSteven Whitehouse goto out_gunlock; 9522ab9cd1cSSteven Whitehouse 9533c1c0ae1SSteven Whitehouse if (da.nr_blocks) { 9543c1c0ae1SSteven Whitehouse struct gfs2_alloc_parms ap = { .target = da.nr_blocks, }; 955b8fbf471SAbhi Das error = gfs2_quota_lock_check(dip, &ap); 9562ab9cd1cSSteven Whitehouse if (error) 9575407e242SBob Peterson goto out_gunlock; 9582ab9cd1cSSteven Whitehouse 9597b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(dip, &ap); 9602ab9cd1cSSteven Whitehouse if (error) 9612ab9cd1cSSteven Whitehouse goto out_gunlock_q; 9622ab9cd1cSSteven Whitehouse 963534cf9caSSteven Whitehouse error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(dip, &da, 2), 0); 9642ab9cd1cSSteven Whitehouse if (error) 9652ab9cd1cSSteven Whitehouse goto out_ipres; 9662ab9cd1cSSteven Whitehouse } else { 9672ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0); 9682ab9cd1cSSteven Whitehouse if (error) 9692ab9cd1cSSteven Whitehouse goto out_ipres; 9702ab9cd1cSSteven Whitehouse } 9712ab9cd1cSSteven Whitehouse 9722ab9cd1cSSteven Whitehouse error = gfs2_meta_inode_buffer(ip, &dibh); 9732ab9cd1cSSteven Whitehouse if (error) 9742ab9cd1cSSteven Whitehouse goto out_end_trans; 9752ab9cd1cSSteven Whitehouse 9762b47dad8SSteven Whitehouse error = gfs2_dir_add(dir, &dentry->d_name, ip, &da); 9772ab9cd1cSSteven Whitehouse if (error) 9782ab9cd1cSSteven Whitehouse goto out_brelse; 9792ab9cd1cSSteven Whitehouse 980350a9b0aSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, dibh); 9812ab9cd1cSSteven Whitehouse inc_nlink(&ip->i_inode); 9822ab9cd1cSSteven Whitehouse ip->i_inode.i_ctime = CURRENT_TIME; 983ab9bbda0SSteven Whitehouse ihold(inode); 984ab9bbda0SSteven Whitehouse d_instantiate(dentry, inode); 985ab9bbda0SSteven Whitehouse mark_inode_dirty(inode); 9862ab9cd1cSSteven Whitehouse 9872ab9cd1cSSteven Whitehouse out_brelse: 9882ab9cd1cSSteven Whitehouse brelse(dibh); 9892ab9cd1cSSteven Whitehouse out_end_trans: 9902ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 9912ab9cd1cSSteven Whitehouse out_ipres: 9923c1c0ae1SSteven Whitehouse if (da.nr_blocks) 9932ab9cd1cSSteven Whitehouse gfs2_inplace_release(dip); 9942ab9cd1cSSteven Whitehouse out_gunlock_q: 9953c1c0ae1SSteven Whitehouse if (da.nr_blocks) 9962ab9cd1cSSteven Whitehouse gfs2_quota_unlock(dip); 9972ab9cd1cSSteven Whitehouse out_gunlock: 9982b47dad8SSteven Whitehouse gfs2_dir_no_add(&da); 9992ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + 1); 10002ab9cd1cSSteven Whitehouse out_child: 10012ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs); 10022ab9cd1cSSteven Whitehouse out_parent: 10032ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs); 10042ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs + 1); 10052ab9cd1cSSteven Whitehouse return error; 10062ab9cd1cSSteven Whitehouse } 10072ab9cd1cSSteven Whitehouse 10082ab9cd1cSSteven Whitehouse /* 10092ab9cd1cSSteven Whitehouse * gfs2_unlink_ok - check to see that a inode is still in a directory 10102ab9cd1cSSteven Whitehouse * @dip: the directory 10112ab9cd1cSSteven Whitehouse * @name: the name of the file 10122ab9cd1cSSteven Whitehouse * @ip: the inode 10132ab9cd1cSSteven Whitehouse * 10142ab9cd1cSSteven Whitehouse * Assumes that the lock on (at least) @dip is held. 10152ab9cd1cSSteven Whitehouse * 10162ab9cd1cSSteven Whitehouse * Returns: 0 if the parent/child relationship is correct, errno if it isn't 10172ab9cd1cSSteven Whitehouse */ 10182ab9cd1cSSteven Whitehouse 10192ab9cd1cSSteven Whitehouse static int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name, 10202ab9cd1cSSteven Whitehouse const struct gfs2_inode *ip) 10212ab9cd1cSSteven Whitehouse { 10222ab9cd1cSSteven Whitehouse int error; 10232ab9cd1cSSteven Whitehouse 10242ab9cd1cSSteven Whitehouse if (IS_IMMUTABLE(&ip->i_inode) || IS_APPEND(&ip->i_inode)) 10252ab9cd1cSSteven Whitehouse return -EPERM; 10262ab9cd1cSSteven Whitehouse 10272ab9cd1cSSteven Whitehouse if ((dip->i_inode.i_mode & S_ISVTX) && 10286b24c0d2SEric W. Biederman !uid_eq(dip->i_inode.i_uid, current_fsuid()) && 10296b24c0d2SEric W. Biederman !uid_eq(ip->i_inode.i_uid, current_fsuid()) && !capable(CAP_FOWNER)) 10302ab9cd1cSSteven Whitehouse return -EPERM; 10312ab9cd1cSSteven Whitehouse 10322ab9cd1cSSteven Whitehouse if (IS_APPEND(&dip->i_inode)) 10332ab9cd1cSSteven Whitehouse return -EPERM; 10342ab9cd1cSSteven Whitehouse 103510556cb2SAl Viro error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC); 10362ab9cd1cSSteven Whitehouse if (error) 10372ab9cd1cSSteven Whitehouse return error; 10382ab9cd1cSSteven Whitehouse 103937975f15SFabian Frederick return gfs2_dir_check(&dip->i_inode, name, ip); 10402ab9cd1cSSteven Whitehouse } 10412ab9cd1cSSteven Whitehouse 10422ab9cd1cSSteven Whitehouse /** 10432ab9cd1cSSteven Whitehouse * gfs2_unlink_inode - Removes an inode from its parent dir and unlinks it 10442ab9cd1cSSteven Whitehouse * @dip: The parent directory 10452ab9cd1cSSteven Whitehouse * @name: The name of the entry in the parent directory 10462ab9cd1cSSteven Whitehouse * @inode: The inode to be removed 10472ab9cd1cSSteven Whitehouse * 10482ab9cd1cSSteven Whitehouse * Called with all the locks and in a transaction. This will only be 10492ab9cd1cSSteven Whitehouse * called for a directory after it has been checked to ensure it is empty. 10502ab9cd1cSSteven Whitehouse * 10512ab9cd1cSSteven Whitehouse * Returns: 0 on success, or an error 10522ab9cd1cSSteven Whitehouse */ 10532ab9cd1cSSteven Whitehouse 10542ab9cd1cSSteven Whitehouse static int gfs2_unlink_inode(struct gfs2_inode *dip, 10554327a9bfSBob Peterson const struct dentry *dentry) 10562ab9cd1cSSteven Whitehouse { 10572b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 10582ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 10592ab9cd1cSSteven Whitehouse int error; 10602ab9cd1cSSteven Whitehouse 10612ab9cd1cSSteven Whitehouse error = gfs2_dir_del(dip, dentry); 10622ab9cd1cSSteven Whitehouse if (error) 10632ab9cd1cSSteven Whitehouse return error; 10642ab9cd1cSSteven Whitehouse 10652ab9cd1cSSteven Whitehouse ip->i_entries = 0; 10662ab9cd1cSSteven Whitehouse inode->i_ctime = CURRENT_TIME; 10672ab9cd1cSSteven Whitehouse if (S_ISDIR(inode->i_mode)) 10682ab9cd1cSSteven Whitehouse clear_nlink(inode); 10692ab9cd1cSSteven Whitehouse else 10702ab9cd1cSSteven Whitehouse drop_nlink(inode); 10712ab9cd1cSSteven Whitehouse mark_inode_dirty(inode); 10722ab9cd1cSSteven Whitehouse if (inode->i_nlink == 0) 10732ab9cd1cSSteven Whitehouse gfs2_unlink_di(inode); 10742ab9cd1cSSteven Whitehouse return 0; 10752ab9cd1cSSteven Whitehouse } 10762ab9cd1cSSteven Whitehouse 10772ab9cd1cSSteven Whitehouse 10782ab9cd1cSSteven Whitehouse /** 10792ab9cd1cSSteven Whitehouse * gfs2_unlink - Unlink an inode (this does rmdir as well) 10802ab9cd1cSSteven Whitehouse * @dir: The inode of the directory containing the inode to unlink 10812ab9cd1cSSteven Whitehouse * @dentry: The file itself 10822ab9cd1cSSteven Whitehouse * 10832ab9cd1cSSteven Whitehouse * This routine uses the type of the inode as a flag to figure out 10842ab9cd1cSSteven Whitehouse * whether this is an unlink or an rmdir. 10852ab9cd1cSSteven Whitehouse * 10862ab9cd1cSSteven Whitehouse * Returns: errno 10872ab9cd1cSSteven Whitehouse */ 10882ab9cd1cSSteven Whitehouse 10892ab9cd1cSSteven Whitehouse static int gfs2_unlink(struct inode *dir, struct dentry *dentry) 10902ab9cd1cSSteven Whitehouse { 10912ab9cd1cSSteven Whitehouse struct gfs2_inode *dip = GFS2_I(dir); 10922ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 10932b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 10942ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 10952ab9cd1cSSteven Whitehouse struct gfs2_holder ghs[3]; 10962ab9cd1cSSteven Whitehouse struct gfs2_rgrpd *rgd; 10975e2f7d61SBob Peterson int error; 10985e2f7d61SBob Peterson 10995e2f7d61SBob Peterson error = gfs2_rindex_update(sdp); 11005e2f7d61SBob Peterson if (error) 11015e2f7d61SBob Peterson return error; 11025e2f7d61SBob Peterson 11035e2f7d61SBob Peterson error = -EROFS; 11042ab9cd1cSSteven Whitehouse 11052ab9cd1cSSteven Whitehouse gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 11062ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); 11072ab9cd1cSSteven Whitehouse 110866fc061bSSteven Whitehouse rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1); 1109a365fbf3SSteven Whitehouse if (!rgd) 111087654896SSteven Whitehouse goto out_inodes; 1111a365fbf3SSteven Whitehouse 11122ab9cd1cSSteven Whitehouse gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2); 11132ab9cd1cSSteven Whitehouse 11142ab9cd1cSSteven Whitehouse 11152ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs); /* parent */ 11162ab9cd1cSSteven Whitehouse if (error) 11172ab9cd1cSSteven Whitehouse goto out_parent; 11182ab9cd1cSSteven Whitehouse 11192ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + 1); /* child */ 11202ab9cd1cSSteven Whitehouse if (error) 11212ab9cd1cSSteven Whitehouse goto out_child; 11222ab9cd1cSSteven Whitehouse 11232ab9cd1cSSteven Whitehouse error = -ENOENT; 11242ab9cd1cSSteven Whitehouse if (inode->i_nlink == 0) 11252ab9cd1cSSteven Whitehouse goto out_rgrp; 11262ab9cd1cSSteven Whitehouse 11272ab9cd1cSSteven Whitehouse if (S_ISDIR(inode->i_mode)) { 11282ab9cd1cSSteven Whitehouse error = -ENOTEMPTY; 11292ab9cd1cSSteven Whitehouse if (ip->i_entries > 2 || inode->i_nlink > 2) 11302ab9cd1cSSteven Whitehouse goto out_rgrp; 11312ab9cd1cSSteven Whitehouse } 11322ab9cd1cSSteven Whitehouse 11332ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + 2); /* rgrp */ 11342ab9cd1cSSteven Whitehouse if (error) 11352ab9cd1cSSteven Whitehouse goto out_rgrp; 11362ab9cd1cSSteven Whitehouse 11372ab9cd1cSSteven Whitehouse error = gfs2_unlink_ok(dip, &dentry->d_name, ip); 11382ab9cd1cSSteven Whitehouse if (error) 11392ab9cd1cSSteven Whitehouse goto out_gunlock; 11402ab9cd1cSSteven Whitehouse 11412ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, 2*RES_DINODE + 3*RES_LEAF + RES_RG_BIT, 0); 11422ab9cd1cSSteven Whitehouse if (error) 11432ab9cd1cSSteven Whitehouse goto out_end_trans; 11442ab9cd1cSSteven Whitehouse 11454327a9bfSBob Peterson error = gfs2_unlink_inode(dip, dentry); 11462ab9cd1cSSteven Whitehouse 11472ab9cd1cSSteven Whitehouse out_end_trans: 11482ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 11492ab9cd1cSSteven Whitehouse out_gunlock: 11502ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + 2); 11512ab9cd1cSSteven Whitehouse out_rgrp: 11522ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + 1); 11532ab9cd1cSSteven Whitehouse out_child: 11542ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs); 11552ab9cd1cSSteven Whitehouse out_parent: 115687654896SSteven Whitehouse gfs2_holder_uninit(ghs + 2); 115787654896SSteven Whitehouse out_inodes: 115887654896SSteven Whitehouse gfs2_holder_uninit(ghs + 1); 11592ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs); 11602ab9cd1cSSteven Whitehouse return error; 11612ab9cd1cSSteven Whitehouse } 11622ab9cd1cSSteven Whitehouse 11632ab9cd1cSSteven Whitehouse /** 11642ab9cd1cSSteven Whitehouse * gfs2_symlink - Create a symlink 11652ab9cd1cSSteven Whitehouse * @dir: The directory to create the symlink in 11662ab9cd1cSSteven Whitehouse * @dentry: The dentry to put the symlink in 11672ab9cd1cSSteven Whitehouse * @symname: The thing which the link points to 11682ab9cd1cSSteven Whitehouse * 11692ab9cd1cSSteven Whitehouse * Returns: errno 11702ab9cd1cSSteven Whitehouse */ 11712ab9cd1cSSteven Whitehouse 11722ab9cd1cSSteven Whitehouse static int gfs2_symlink(struct inode *dir, struct dentry *dentry, 11732ab9cd1cSSteven Whitehouse const char *symname) 11742ab9cd1cSSteven Whitehouse { 11752ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 1176160b4026SSteven Whitehouse unsigned int size; 11772ab9cd1cSSteven Whitehouse 11782ab9cd1cSSteven Whitehouse size = strlen(symname); 11792ab9cd1cSSteven Whitehouse if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1) 11802ab9cd1cSSteven Whitehouse return -ENAMETOOLONG; 11812ab9cd1cSSteven Whitehouse 11826d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, NULL, S_IFLNK | S_IRWXUGO, 0, symname, size, 0, NULL); 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 { 119628fb3027SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(dir); 119728fb3027SSteven Whitehouse unsigned dsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); 11986d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, NULL, S_IFDIR | mode, 0, NULL, dsize, 0, NULL); 11992ab9cd1cSSteven Whitehouse } 12002ab9cd1cSSteven Whitehouse 12012ab9cd1cSSteven Whitehouse /** 12022ab9cd1cSSteven Whitehouse * gfs2_mknod - Make a special file 12032ab9cd1cSSteven Whitehouse * @dir: The directory in which the special file will reside 12042ab9cd1cSSteven Whitehouse * @dentry: The dentry of the special file 12052ab9cd1cSSteven Whitehouse * @mode: The mode of the special file 1206f2741d98SSteven Whitehouse * @dev: The device specification of the special file 12072ab9cd1cSSteven Whitehouse * 12082ab9cd1cSSteven Whitehouse */ 12092ab9cd1cSSteven Whitehouse 12101a67aafbSAl Viro static int gfs2_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, 12112ab9cd1cSSteven Whitehouse dev_t dev) 12122ab9cd1cSSteven Whitehouse { 12136d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, NULL, mode, dev, NULL, 0, 0, NULL); 12146d4ade98SSteven Whitehouse } 12156d4ade98SSteven Whitehouse 12166d4ade98SSteven Whitehouse /** 12176d4ade98SSteven Whitehouse * gfs2_atomic_open - Atomically open a file 12186d4ade98SSteven Whitehouse * @dir: The directory 12196d4ade98SSteven Whitehouse * @dentry: The proposed new entry 12206d4ade98SSteven Whitehouse * @file: The proposed new struct file 12216d4ade98SSteven Whitehouse * @flags: open flags 12226d4ade98SSteven Whitehouse * @mode: File mode 12236d4ade98SSteven Whitehouse * @opened: Flag to say whether the file has been opened or not 12246d4ade98SSteven Whitehouse * 12256d4ade98SSteven Whitehouse * Returns: error code or 0 for success 12266d4ade98SSteven Whitehouse */ 12276d4ade98SSteven Whitehouse 12286d4ade98SSteven Whitehouse static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry, 12296d4ade98SSteven Whitehouse struct file *file, unsigned flags, 12306d4ade98SSteven Whitehouse umode_t mode, int *opened) 12316d4ade98SSteven Whitehouse { 12326d4ade98SSteven Whitehouse struct dentry *d; 12336d4ade98SSteven Whitehouse bool excl = !!(flags & O_EXCL); 12346d4ade98SSteven Whitehouse 123500699ad8SAl Viro if (!d_in_lookup(dentry)) 12364d93bc3eSAl Viro goto skip_lookup; 12374d93bc3eSAl Viro 12386d4ade98SSteven Whitehouse d = __gfs2_lookup(dir, dentry, file, opened); 12396d4ade98SSteven Whitehouse if (IS_ERR(d)) 12406d4ade98SSteven Whitehouse return PTR_ERR(d); 12415ca1db41SMiklos Szeredi if (d != NULL) 12425ca1db41SMiklos Szeredi dentry = d; 12432b0143b5SDavid Howells if (d_really_is_positive(dentry)) { 1244ec7d879cSAl Viro if (!(*opened & FILE_OPENED)) 1245ec7d879cSAl Viro return finish_no_open(file, d); 12465ca1db41SMiklos Szeredi dput(d); 12476d4ade98SSteven Whitehouse return 0; 12486d4ade98SSteven Whitehouse } 12496d4ade98SSteven Whitehouse 12505ca1db41SMiklos Szeredi BUG_ON(d != NULL); 12514d93bc3eSAl Viro 12524d93bc3eSAl Viro skip_lookup: 12536d4ade98SSteven Whitehouse if (!(flags & O_CREAT)) 12546d4ade98SSteven Whitehouse return -ENOENT; 12556d4ade98SSteven Whitehouse 12566d4ade98SSteven Whitehouse return gfs2_create_inode(dir, dentry, file, S_IFREG | mode, 0, NULL, 0, excl, opened); 12572ab9cd1cSSteven Whitehouse } 12582ab9cd1cSSteven Whitehouse 12592ab9cd1cSSteven Whitehouse /* 12602ab9cd1cSSteven Whitehouse * gfs2_ok_to_move - check if it's ok to move a directory to another directory 12612ab9cd1cSSteven Whitehouse * @this: move this 12622ab9cd1cSSteven Whitehouse * @to: to here 12632ab9cd1cSSteven Whitehouse * 12642ab9cd1cSSteven Whitehouse * Follow @to back to the root and make sure we don't encounter @this 12652ab9cd1cSSteven Whitehouse * Assumes we already hold the rename lock. 12662ab9cd1cSSteven Whitehouse * 12672ab9cd1cSSteven Whitehouse * Returns: errno 12682ab9cd1cSSteven Whitehouse */ 12692ab9cd1cSSteven Whitehouse 12702ab9cd1cSSteven Whitehouse static int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to) 12712ab9cd1cSSteven Whitehouse { 12722ab9cd1cSSteven Whitehouse struct inode *dir = &to->i_inode; 12732ab9cd1cSSteven Whitehouse struct super_block *sb = dir->i_sb; 12742ab9cd1cSSteven Whitehouse struct inode *tmp; 12752ab9cd1cSSteven Whitehouse int error = 0; 12762ab9cd1cSSteven Whitehouse 12772ab9cd1cSSteven Whitehouse igrab(dir); 12782ab9cd1cSSteven Whitehouse 12792ab9cd1cSSteven Whitehouse for (;;) { 12802ab9cd1cSSteven Whitehouse if (dir == &this->i_inode) { 12812ab9cd1cSSteven Whitehouse error = -EINVAL; 12822ab9cd1cSSteven Whitehouse break; 12832ab9cd1cSSteven Whitehouse } 12842b0143b5SDavid Howells if (dir == d_inode(sb->s_root)) { 12852ab9cd1cSSteven Whitehouse error = 0; 12862ab9cd1cSSteven Whitehouse break; 12872ab9cd1cSSteven Whitehouse } 12882ab9cd1cSSteven Whitehouse 12892ab9cd1cSSteven Whitehouse tmp = gfs2_lookupi(dir, &gfs2_qdotdot, 1); 129048f8f711SAbhi Das if (!tmp) { 129148f8f711SAbhi Das error = -ENOENT; 129248f8f711SAbhi Das break; 129348f8f711SAbhi Das } 12942ab9cd1cSSteven Whitehouse if (IS_ERR(tmp)) { 12952ab9cd1cSSteven Whitehouse error = PTR_ERR(tmp); 12962ab9cd1cSSteven Whitehouse break; 12972ab9cd1cSSteven Whitehouse } 12982ab9cd1cSSteven Whitehouse 12992ab9cd1cSSteven Whitehouse iput(dir); 13002ab9cd1cSSteven Whitehouse dir = tmp; 13012ab9cd1cSSteven Whitehouse } 13022ab9cd1cSSteven Whitehouse 13032ab9cd1cSSteven Whitehouse iput(dir); 13042ab9cd1cSSteven Whitehouse 13052ab9cd1cSSteven Whitehouse return error; 13062ab9cd1cSSteven Whitehouse } 13072ab9cd1cSSteven Whitehouse 13082ab9cd1cSSteven Whitehouse /** 1309a63b7bbcSBenjamin Marzinski * update_moved_ino - Update an inode that's being moved 1310a63b7bbcSBenjamin Marzinski * @ip: The inode being moved 1311a63b7bbcSBenjamin Marzinski * @ndip: The parent directory of the new filename 1312a63b7bbcSBenjamin Marzinski * @dir_rename: True of ip is a directory 1313a63b7bbcSBenjamin Marzinski * 1314a63b7bbcSBenjamin Marzinski * Returns: errno 1315a63b7bbcSBenjamin Marzinski */ 1316a63b7bbcSBenjamin Marzinski 1317a63b7bbcSBenjamin Marzinski static int update_moved_ino(struct gfs2_inode *ip, struct gfs2_inode *ndip, 1318a63b7bbcSBenjamin Marzinski int dir_rename) 1319a63b7bbcSBenjamin Marzinski { 1320a63b7bbcSBenjamin Marzinski int error; 1321a63b7bbcSBenjamin Marzinski struct buffer_head *dibh; 1322a63b7bbcSBenjamin Marzinski 1323a63b7bbcSBenjamin Marzinski if (dir_rename) 1324a63b7bbcSBenjamin Marzinski return gfs2_dir_mvino(ip, &gfs2_qdotdot, ndip, DT_DIR); 1325a63b7bbcSBenjamin Marzinski 1326a63b7bbcSBenjamin Marzinski error = gfs2_meta_inode_buffer(ip, &dibh); 1327a63b7bbcSBenjamin Marzinski if (error) 1328a63b7bbcSBenjamin Marzinski return error; 1329a63b7bbcSBenjamin Marzinski ip->i_inode.i_ctime = CURRENT_TIME; 1330a63b7bbcSBenjamin Marzinski gfs2_trans_add_meta(ip->i_gl, dibh); 1331a63b7bbcSBenjamin Marzinski gfs2_dinode_out(ip, dibh->b_data); 1332a63b7bbcSBenjamin Marzinski brelse(dibh); 1333a63b7bbcSBenjamin Marzinski return 0; 1334a63b7bbcSBenjamin Marzinski } 1335a63b7bbcSBenjamin Marzinski 1336a63b7bbcSBenjamin Marzinski 1337a63b7bbcSBenjamin Marzinski /** 13382ab9cd1cSSteven Whitehouse * gfs2_rename - Rename a file 13392ab9cd1cSSteven Whitehouse * @odir: Parent directory of old file name 13402ab9cd1cSSteven Whitehouse * @odentry: The old dentry of the file 13412ab9cd1cSSteven Whitehouse * @ndir: Parent directory of new file name 13422ab9cd1cSSteven Whitehouse * @ndentry: The new dentry of the file 13432ab9cd1cSSteven Whitehouse * 13442ab9cd1cSSteven Whitehouse * Returns: errno 13452ab9cd1cSSteven Whitehouse */ 13462ab9cd1cSSteven Whitehouse 13472ab9cd1cSSteven Whitehouse static int gfs2_rename(struct inode *odir, struct dentry *odentry, 13482ab9cd1cSSteven Whitehouse struct inode *ndir, struct dentry *ndentry) 13492ab9cd1cSSteven Whitehouse { 13502ab9cd1cSSteven Whitehouse struct gfs2_inode *odip = GFS2_I(odir); 13512ab9cd1cSSteven Whitehouse struct gfs2_inode *ndip = GFS2_I(ndir); 13522b0143b5SDavid Howells struct gfs2_inode *ip = GFS2_I(d_inode(odentry)); 13532ab9cd1cSSteven Whitehouse struct gfs2_inode *nip = NULL; 13542ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(odir); 13556df9f9a2SAndreas Gruenbacher struct gfs2_holder ghs[5], r_gh; 13562ab9cd1cSSteven Whitehouse struct gfs2_rgrpd *nrgd; 13572ab9cd1cSSteven Whitehouse unsigned int num_gh; 13582ab9cd1cSSteven Whitehouse int dir_rename = 0; 135919aeb5a6SBob Peterson struct gfs2_diradd da = { .nr_blocks = 0, .save_loc = 0, }; 13602ab9cd1cSSteven Whitehouse unsigned int x; 13612ab9cd1cSSteven Whitehouse int error; 13622ab9cd1cSSteven Whitehouse 13636df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&r_gh); 13642b0143b5SDavid Howells if (d_really_is_positive(ndentry)) { 13652b0143b5SDavid Howells nip = GFS2_I(d_inode(ndentry)); 13662ab9cd1cSSteven Whitehouse if (ip == nip) 13672ab9cd1cSSteven Whitehouse return 0; 13682ab9cd1cSSteven Whitehouse } 13692ab9cd1cSSteven Whitehouse 13705e2f7d61SBob Peterson error = gfs2_rindex_update(sdp); 13715e2f7d61SBob Peterson if (error) 13725e2f7d61SBob Peterson return error; 13735e2f7d61SBob Peterson 1374b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ndip); 13750a305e49SBob Peterson if (error) 13760a305e49SBob Peterson return error; 13770a305e49SBob Peterson 13782ab9cd1cSSteven Whitehouse if (odip != ndip) { 13792ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE, 13802ab9cd1cSSteven Whitehouse 0, &r_gh); 13812ab9cd1cSSteven Whitehouse if (error) 13822ab9cd1cSSteven Whitehouse goto out; 13832ab9cd1cSSteven Whitehouse 13842ab9cd1cSSteven Whitehouse if (S_ISDIR(ip->i_inode.i_mode)) { 13852ab9cd1cSSteven Whitehouse dir_rename = 1; 1386a63b7bbcSBenjamin Marzinski /* don't move a directory into its subdir */ 13872ab9cd1cSSteven Whitehouse error = gfs2_ok_to_move(ip, ndip); 13882ab9cd1cSSteven Whitehouse if (error) 13892ab9cd1cSSteven Whitehouse goto out_gunlock_r; 13902ab9cd1cSSteven Whitehouse } 13912ab9cd1cSSteven Whitehouse } 13922ab9cd1cSSteven Whitehouse 13932ab9cd1cSSteven Whitehouse num_gh = 1; 13942ab9cd1cSSteven Whitehouse gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 13952ab9cd1cSSteven Whitehouse if (odip != ndip) { 13962ab9cd1cSSteven Whitehouse gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 13972ab9cd1cSSteven Whitehouse num_gh++; 13982ab9cd1cSSteven Whitehouse } 13992ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 14002ab9cd1cSSteven Whitehouse num_gh++; 14012ab9cd1cSSteven Whitehouse 14022ab9cd1cSSteven Whitehouse if (nip) { 14032ab9cd1cSSteven Whitehouse gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 14042ab9cd1cSSteven Whitehouse num_gh++; 14052ab9cd1cSSteven Whitehouse /* grab the resource lock for unlink flag twiddling 14062ab9cd1cSSteven Whitehouse * this is the case of the target file already existing 14072ab9cd1cSSteven Whitehouse * so we unlink before doing the rename 14082ab9cd1cSSteven Whitehouse */ 140966fc061bSSteven Whitehouse nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr, 1); 14102ab9cd1cSSteven Whitehouse if (nrgd) 14112ab9cd1cSSteven Whitehouse gfs2_holder_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++); 14122ab9cd1cSSteven Whitehouse } 14132ab9cd1cSSteven Whitehouse 14142ab9cd1cSSteven Whitehouse for (x = 0; x < num_gh; x++) { 14152ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(ghs + x); 14162ab9cd1cSSteven Whitehouse if (error) 14172ab9cd1cSSteven Whitehouse goto out_gunlock; 14182ab9cd1cSSteven Whitehouse } 14192ab9cd1cSSteven Whitehouse 14202ab9cd1cSSteven Whitehouse error = -ENOENT; 14212ab9cd1cSSteven Whitehouse if (ip->i_inode.i_nlink == 0) 14222ab9cd1cSSteven Whitehouse goto out_gunlock; 14232ab9cd1cSSteven Whitehouse 14242ab9cd1cSSteven Whitehouse /* Check out the old directory */ 14252ab9cd1cSSteven Whitehouse 14262ab9cd1cSSteven Whitehouse error = gfs2_unlink_ok(odip, &odentry->d_name, ip); 14272ab9cd1cSSteven Whitehouse if (error) 14282ab9cd1cSSteven Whitehouse goto out_gunlock; 14292ab9cd1cSSteven Whitehouse 14302ab9cd1cSSteven Whitehouse /* Check out the new directory */ 14312ab9cd1cSSteven Whitehouse 14322ab9cd1cSSteven Whitehouse if (nip) { 14332ab9cd1cSSteven Whitehouse error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip); 14342ab9cd1cSSteven Whitehouse if (error) 14352ab9cd1cSSteven Whitehouse goto out_gunlock; 14362ab9cd1cSSteven Whitehouse 14372ab9cd1cSSteven Whitehouse if (nip->i_inode.i_nlink == 0) { 14382ab9cd1cSSteven Whitehouse error = -EAGAIN; 14392ab9cd1cSSteven Whitehouse goto out_gunlock; 14402ab9cd1cSSteven Whitehouse } 14412ab9cd1cSSteven Whitehouse 14422ab9cd1cSSteven Whitehouse if (S_ISDIR(nip->i_inode.i_mode)) { 14432ab9cd1cSSteven Whitehouse if (nip->i_entries < 2) { 14442ab9cd1cSSteven Whitehouse gfs2_consist_inode(nip); 14452ab9cd1cSSteven Whitehouse error = -EIO; 14462ab9cd1cSSteven Whitehouse goto out_gunlock; 14472ab9cd1cSSteven Whitehouse } 14482ab9cd1cSSteven Whitehouse if (nip->i_entries > 2) { 14492ab9cd1cSSteven Whitehouse error = -ENOTEMPTY; 14502ab9cd1cSSteven Whitehouse goto out_gunlock; 14512ab9cd1cSSteven Whitehouse } 14522ab9cd1cSSteven Whitehouse } 14532ab9cd1cSSteven Whitehouse } else { 145410556cb2SAl Viro error = gfs2_permission(ndir, MAY_WRITE | MAY_EXEC); 14552ab9cd1cSSteven Whitehouse if (error) 14562ab9cd1cSSteven Whitehouse goto out_gunlock; 14572ab9cd1cSSteven Whitehouse 14582ab9cd1cSSteven Whitehouse error = gfs2_dir_check(ndir, &ndentry->d_name, NULL); 14592ab9cd1cSSteven Whitehouse switch (error) { 14602ab9cd1cSSteven Whitehouse case -ENOENT: 14612ab9cd1cSSteven Whitehouse error = 0; 14622ab9cd1cSSteven Whitehouse break; 14632ab9cd1cSSteven Whitehouse case 0: 14642ab9cd1cSSteven Whitehouse error = -EEXIST; 14652ab9cd1cSSteven Whitehouse default: 14662ab9cd1cSSteven Whitehouse goto out_gunlock; 14672ab9cd1cSSteven Whitehouse }; 14682ab9cd1cSSteven Whitehouse 14692ab9cd1cSSteven Whitehouse if (odip != ndip) { 14702ab9cd1cSSteven Whitehouse if (!ndip->i_inode.i_nlink) { 14712ab9cd1cSSteven Whitehouse error = -ENOENT; 14722ab9cd1cSSteven Whitehouse goto out_gunlock; 14732ab9cd1cSSteven Whitehouse } 14742ab9cd1cSSteven Whitehouse if (ndip->i_entries == (u32)-1) { 14752ab9cd1cSSteven Whitehouse error = -EFBIG; 14762ab9cd1cSSteven Whitehouse goto out_gunlock; 14772ab9cd1cSSteven Whitehouse } 14782ab9cd1cSSteven Whitehouse if (S_ISDIR(ip->i_inode.i_mode) && 14792ab9cd1cSSteven Whitehouse ndip->i_inode.i_nlink == (u32)-1) { 14802ab9cd1cSSteven Whitehouse error = -EMLINK; 14812ab9cd1cSSteven Whitehouse goto out_gunlock; 14822ab9cd1cSSteven Whitehouse } 14832ab9cd1cSSteven Whitehouse } 14842ab9cd1cSSteven Whitehouse } 14852ab9cd1cSSteven Whitehouse 14862ab9cd1cSSteven Whitehouse /* Check out the dir to be renamed */ 14872ab9cd1cSSteven Whitehouse 14882ab9cd1cSSteven Whitehouse if (dir_rename) { 14892b0143b5SDavid Howells error = gfs2_permission(d_inode(odentry), MAY_WRITE); 14902ab9cd1cSSteven Whitehouse if (error) 14912ab9cd1cSSteven Whitehouse goto out_gunlock; 14922ab9cd1cSSteven Whitehouse } 14932ab9cd1cSSteven Whitehouse 14943c1c0ae1SSteven Whitehouse if (nip == NULL) { 14953c1c0ae1SSteven Whitehouse error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name, &da); 14963c1c0ae1SSteven Whitehouse if (error) 14972ab9cd1cSSteven Whitehouse goto out_gunlock; 14983c1c0ae1SSteven Whitehouse } 14992ab9cd1cSSteven Whitehouse 15003c1c0ae1SSteven Whitehouse if (da.nr_blocks) { 15013c1c0ae1SSteven Whitehouse struct gfs2_alloc_parms ap = { .target = da.nr_blocks, }; 1502b8fbf471SAbhi Das error = gfs2_quota_lock_check(ndip, &ap); 15032ab9cd1cSSteven Whitehouse if (error) 15045407e242SBob Peterson goto out_gunlock; 15052ab9cd1cSSteven Whitehouse 15067b9cff46SSteven Whitehouse error = gfs2_inplace_reserve(ndip, &ap); 15072ab9cd1cSSteven Whitehouse if (error) 15082ab9cd1cSSteven Whitehouse goto out_gunlock_q; 15092ab9cd1cSSteven Whitehouse 1510534cf9caSSteven Whitehouse error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(ndip, &da, 4) + 1511534cf9caSSteven Whitehouse 4 * RES_LEAF + 4, 0); 15122ab9cd1cSSteven Whitehouse if (error) 15132ab9cd1cSSteven Whitehouse goto out_ipreserv; 15142ab9cd1cSSteven Whitehouse } else { 15152ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, 4 * RES_DINODE + 15162ab9cd1cSSteven Whitehouse 5 * RES_LEAF + 4, 0); 15172ab9cd1cSSteven Whitehouse if (error) 15182ab9cd1cSSteven Whitehouse goto out_gunlock; 15192ab9cd1cSSteven Whitehouse } 15202ab9cd1cSSteven Whitehouse 15212ab9cd1cSSteven Whitehouse /* Remove the target file, if it exists */ 15222ab9cd1cSSteven Whitehouse 15234327a9bfSBob Peterson if (nip) 15244327a9bfSBob Peterson error = gfs2_unlink_inode(ndip, ndentry); 15252ab9cd1cSSteven Whitehouse 1526a63b7bbcSBenjamin Marzinski error = update_moved_ino(ip, ndip, dir_rename); 15272ab9cd1cSSteven Whitehouse if (error) 15282ab9cd1cSSteven Whitehouse goto out_end_trans; 15292ab9cd1cSSteven Whitehouse 15302ab9cd1cSSteven Whitehouse error = gfs2_dir_del(odip, odentry); 15312ab9cd1cSSteven Whitehouse if (error) 15322ab9cd1cSSteven Whitehouse goto out_end_trans; 15332ab9cd1cSSteven Whitehouse 15342b47dad8SSteven Whitehouse error = gfs2_dir_add(ndir, &ndentry->d_name, ip, &da); 15352ab9cd1cSSteven Whitehouse if (error) 15362ab9cd1cSSteven Whitehouse goto out_end_trans; 15372ab9cd1cSSteven Whitehouse 15382ab9cd1cSSteven Whitehouse out_end_trans: 15392ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 15402ab9cd1cSSteven Whitehouse out_ipreserv: 15413c1c0ae1SSteven Whitehouse if (da.nr_blocks) 15422ab9cd1cSSteven Whitehouse gfs2_inplace_release(ndip); 15432ab9cd1cSSteven Whitehouse out_gunlock_q: 15443c1c0ae1SSteven Whitehouse if (da.nr_blocks) 15452ab9cd1cSSteven Whitehouse gfs2_quota_unlock(ndip); 15462ab9cd1cSSteven Whitehouse out_gunlock: 15472b47dad8SSteven Whitehouse gfs2_dir_no_add(&da); 15482ab9cd1cSSteven Whitehouse while (x--) { 15492ab9cd1cSSteven Whitehouse gfs2_glock_dq(ghs + x); 15502ab9cd1cSSteven Whitehouse gfs2_holder_uninit(ghs + x); 15512ab9cd1cSSteven Whitehouse } 15522ab9cd1cSSteven Whitehouse out_gunlock_r: 15536df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&r_gh)) 15542ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&r_gh); 15552ab9cd1cSSteven Whitehouse out: 15562ab9cd1cSSteven Whitehouse return error; 15572ab9cd1cSSteven Whitehouse } 15582ab9cd1cSSteven Whitehouse 15592ab9cd1cSSteven Whitehouse /** 1560a63b7bbcSBenjamin Marzinski * gfs2_exchange - exchange two files 1561a63b7bbcSBenjamin Marzinski * @odir: Parent directory of old file name 1562a63b7bbcSBenjamin Marzinski * @odentry: The old dentry of the file 1563a63b7bbcSBenjamin Marzinski * @ndir: Parent directory of new file name 1564a63b7bbcSBenjamin Marzinski * @ndentry: The new dentry of the file 1565a63b7bbcSBenjamin Marzinski * @flags: The rename flags 1566a63b7bbcSBenjamin Marzinski * 1567a63b7bbcSBenjamin Marzinski * Returns: errno 1568a63b7bbcSBenjamin Marzinski */ 1569a63b7bbcSBenjamin Marzinski 1570a63b7bbcSBenjamin Marzinski static int gfs2_exchange(struct inode *odir, struct dentry *odentry, 1571a63b7bbcSBenjamin Marzinski struct inode *ndir, struct dentry *ndentry, 1572a63b7bbcSBenjamin Marzinski unsigned int flags) 1573a63b7bbcSBenjamin Marzinski { 1574a63b7bbcSBenjamin Marzinski struct gfs2_inode *odip = GFS2_I(odir); 1575a63b7bbcSBenjamin Marzinski struct gfs2_inode *ndip = GFS2_I(ndir); 1576a63b7bbcSBenjamin Marzinski struct gfs2_inode *oip = GFS2_I(odentry->d_inode); 1577a63b7bbcSBenjamin Marzinski struct gfs2_inode *nip = GFS2_I(ndentry->d_inode); 1578a63b7bbcSBenjamin Marzinski struct gfs2_sbd *sdp = GFS2_SB(odir); 15796df9f9a2SAndreas Gruenbacher struct gfs2_holder ghs[5], r_gh; 1580a63b7bbcSBenjamin Marzinski unsigned int num_gh; 1581a63b7bbcSBenjamin Marzinski unsigned int x; 1582a63b7bbcSBenjamin Marzinski umode_t old_mode = oip->i_inode.i_mode; 1583a63b7bbcSBenjamin Marzinski umode_t new_mode = nip->i_inode.i_mode; 1584a63b7bbcSBenjamin Marzinski int error; 1585a63b7bbcSBenjamin Marzinski 15866df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&r_gh); 1587a63b7bbcSBenjamin Marzinski error = gfs2_rindex_update(sdp); 1588a63b7bbcSBenjamin Marzinski if (error) 1589a63b7bbcSBenjamin Marzinski return error; 1590a63b7bbcSBenjamin Marzinski 1591a63b7bbcSBenjamin Marzinski if (odip != ndip) { 1592a63b7bbcSBenjamin Marzinski error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE, 1593a63b7bbcSBenjamin Marzinski 0, &r_gh); 1594a63b7bbcSBenjamin Marzinski if (error) 1595a63b7bbcSBenjamin Marzinski goto out; 1596a63b7bbcSBenjamin Marzinski 1597a63b7bbcSBenjamin Marzinski if (S_ISDIR(old_mode)) { 1598a63b7bbcSBenjamin Marzinski /* don't move a directory into its subdir */ 1599a63b7bbcSBenjamin Marzinski error = gfs2_ok_to_move(oip, ndip); 1600a63b7bbcSBenjamin Marzinski if (error) 1601a63b7bbcSBenjamin Marzinski goto out_gunlock_r; 1602a63b7bbcSBenjamin Marzinski } 1603a63b7bbcSBenjamin Marzinski 1604a63b7bbcSBenjamin Marzinski if (S_ISDIR(new_mode)) { 1605a63b7bbcSBenjamin Marzinski /* don't move a directory into its subdir */ 1606a63b7bbcSBenjamin Marzinski error = gfs2_ok_to_move(nip, odip); 1607a63b7bbcSBenjamin Marzinski if (error) 1608a63b7bbcSBenjamin Marzinski goto out_gunlock_r; 1609a63b7bbcSBenjamin Marzinski } 1610a63b7bbcSBenjamin Marzinski } 1611a63b7bbcSBenjamin Marzinski 1612a63b7bbcSBenjamin Marzinski num_gh = 1; 1613a63b7bbcSBenjamin Marzinski gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); 1614a63b7bbcSBenjamin Marzinski if (odip != ndip) { 1615a63b7bbcSBenjamin Marzinski gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 1616a63b7bbcSBenjamin Marzinski num_gh++; 1617a63b7bbcSBenjamin Marzinski } 1618a63b7bbcSBenjamin Marzinski gfs2_holder_init(oip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 1619a63b7bbcSBenjamin Marzinski num_gh++; 1620a63b7bbcSBenjamin Marzinski 1621a63b7bbcSBenjamin Marzinski gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); 1622a63b7bbcSBenjamin Marzinski num_gh++; 1623a63b7bbcSBenjamin Marzinski 1624a63b7bbcSBenjamin Marzinski for (x = 0; x < num_gh; x++) { 1625a63b7bbcSBenjamin Marzinski error = gfs2_glock_nq(ghs + x); 1626a63b7bbcSBenjamin Marzinski if (error) 1627a63b7bbcSBenjamin Marzinski goto out_gunlock; 1628a63b7bbcSBenjamin Marzinski } 1629a63b7bbcSBenjamin Marzinski 1630a63b7bbcSBenjamin Marzinski error = -ENOENT; 1631a63b7bbcSBenjamin Marzinski if (oip->i_inode.i_nlink == 0 || nip->i_inode.i_nlink == 0) 1632a63b7bbcSBenjamin Marzinski goto out_gunlock; 1633a63b7bbcSBenjamin Marzinski 1634a63b7bbcSBenjamin Marzinski error = gfs2_unlink_ok(odip, &odentry->d_name, oip); 1635a63b7bbcSBenjamin Marzinski if (error) 1636a63b7bbcSBenjamin Marzinski goto out_gunlock; 1637a63b7bbcSBenjamin Marzinski error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip); 1638a63b7bbcSBenjamin Marzinski if (error) 1639a63b7bbcSBenjamin Marzinski goto out_gunlock; 1640a63b7bbcSBenjamin Marzinski 1641a63b7bbcSBenjamin Marzinski if (S_ISDIR(old_mode)) { 1642a63b7bbcSBenjamin Marzinski error = gfs2_permission(odentry->d_inode, MAY_WRITE); 1643a63b7bbcSBenjamin Marzinski if (error) 1644a63b7bbcSBenjamin Marzinski goto out_gunlock; 1645a63b7bbcSBenjamin Marzinski } 1646a63b7bbcSBenjamin Marzinski if (S_ISDIR(new_mode)) { 1647a63b7bbcSBenjamin Marzinski error = gfs2_permission(ndentry->d_inode, MAY_WRITE); 1648a63b7bbcSBenjamin Marzinski if (error) 1649a63b7bbcSBenjamin Marzinski goto out_gunlock; 1650a63b7bbcSBenjamin Marzinski } 1651a63b7bbcSBenjamin Marzinski error = gfs2_trans_begin(sdp, 4 * RES_DINODE + 4 * RES_LEAF, 0); 1652a63b7bbcSBenjamin Marzinski if (error) 1653a63b7bbcSBenjamin Marzinski goto out_gunlock; 1654a63b7bbcSBenjamin Marzinski 1655a63b7bbcSBenjamin Marzinski error = update_moved_ino(oip, ndip, S_ISDIR(old_mode)); 1656a63b7bbcSBenjamin Marzinski if (error) 1657a63b7bbcSBenjamin Marzinski goto out_end_trans; 1658a63b7bbcSBenjamin Marzinski 1659a63b7bbcSBenjamin Marzinski error = update_moved_ino(nip, odip, S_ISDIR(new_mode)); 1660a63b7bbcSBenjamin Marzinski if (error) 1661a63b7bbcSBenjamin Marzinski goto out_end_trans; 1662a63b7bbcSBenjamin Marzinski 1663a63b7bbcSBenjamin Marzinski error = gfs2_dir_mvino(ndip, &ndentry->d_name, oip, 1664a63b7bbcSBenjamin Marzinski IF2DT(old_mode)); 1665a63b7bbcSBenjamin Marzinski if (error) 1666a63b7bbcSBenjamin Marzinski goto out_end_trans; 1667a63b7bbcSBenjamin Marzinski 1668a63b7bbcSBenjamin Marzinski error = gfs2_dir_mvino(odip, &odentry->d_name, nip, 1669a63b7bbcSBenjamin Marzinski IF2DT(new_mode)); 1670a63b7bbcSBenjamin Marzinski if (error) 1671a63b7bbcSBenjamin Marzinski goto out_end_trans; 1672a63b7bbcSBenjamin Marzinski 1673a63b7bbcSBenjamin Marzinski if (odip != ndip) { 1674a63b7bbcSBenjamin Marzinski if (S_ISDIR(new_mode) && !S_ISDIR(old_mode)) { 1675a63b7bbcSBenjamin Marzinski inc_nlink(&odip->i_inode); 1676a63b7bbcSBenjamin Marzinski drop_nlink(&ndip->i_inode); 1677a63b7bbcSBenjamin Marzinski } else if (S_ISDIR(old_mode) && !S_ISDIR(new_mode)) { 1678a63b7bbcSBenjamin Marzinski inc_nlink(&ndip->i_inode); 1679a63b7bbcSBenjamin Marzinski drop_nlink(&odip->i_inode); 1680a63b7bbcSBenjamin Marzinski } 1681a63b7bbcSBenjamin Marzinski } 1682a63b7bbcSBenjamin Marzinski mark_inode_dirty(&ndip->i_inode); 1683a63b7bbcSBenjamin Marzinski if (odip != ndip) 1684a63b7bbcSBenjamin Marzinski mark_inode_dirty(&odip->i_inode); 1685a63b7bbcSBenjamin Marzinski 1686a63b7bbcSBenjamin Marzinski out_end_trans: 1687a63b7bbcSBenjamin Marzinski gfs2_trans_end(sdp); 1688a63b7bbcSBenjamin Marzinski out_gunlock: 1689a63b7bbcSBenjamin Marzinski while (x--) { 1690a63b7bbcSBenjamin Marzinski gfs2_glock_dq(ghs + x); 1691a63b7bbcSBenjamin Marzinski gfs2_holder_uninit(ghs + x); 1692a63b7bbcSBenjamin Marzinski } 1693a63b7bbcSBenjamin Marzinski out_gunlock_r: 16946df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&r_gh)) 1695a63b7bbcSBenjamin Marzinski gfs2_glock_dq_uninit(&r_gh); 1696a63b7bbcSBenjamin Marzinski out: 1697a63b7bbcSBenjamin Marzinski return error; 1698a63b7bbcSBenjamin Marzinski } 1699a63b7bbcSBenjamin Marzinski 1700a63b7bbcSBenjamin Marzinski static int gfs2_rename2(struct inode *odir, struct dentry *odentry, 1701a63b7bbcSBenjamin Marzinski struct inode *ndir, struct dentry *ndentry, 1702a63b7bbcSBenjamin Marzinski unsigned int flags) 1703a63b7bbcSBenjamin Marzinski { 1704a63b7bbcSBenjamin Marzinski flags &= ~RENAME_NOREPLACE; 1705a63b7bbcSBenjamin Marzinski 1706a63b7bbcSBenjamin Marzinski if (flags & ~RENAME_EXCHANGE) 1707a63b7bbcSBenjamin Marzinski return -EINVAL; 1708a63b7bbcSBenjamin Marzinski 1709a63b7bbcSBenjamin Marzinski if (flags & RENAME_EXCHANGE) 1710a63b7bbcSBenjamin Marzinski return gfs2_exchange(odir, odentry, ndir, ndentry, flags); 1711a63b7bbcSBenjamin Marzinski 1712a63b7bbcSBenjamin Marzinski return gfs2_rename(odir, odentry, ndir, ndentry); 1713a63b7bbcSBenjamin Marzinski } 1714a63b7bbcSBenjamin Marzinski 1715a63b7bbcSBenjamin Marzinski /** 17166b255391SAl Viro * gfs2_get_link - Follow a symbolic link 17172ab9cd1cSSteven Whitehouse * @dentry: The dentry of the link 17186b255391SAl Viro * @inode: The inode of the link 1719fceef393SAl Viro * @done: destructor for return value 17202ab9cd1cSSteven Whitehouse * 17212ab9cd1cSSteven Whitehouse * This can handle symlinks of any size. 17222ab9cd1cSSteven Whitehouse * 17232ab9cd1cSSteven Whitehouse * Returns: 0 on success or error code 17242ab9cd1cSSteven Whitehouse */ 17252ab9cd1cSSteven Whitehouse 17266b255391SAl Viro static const char *gfs2_get_link(struct dentry *dentry, 1727fceef393SAl Viro struct inode *inode, 1728fceef393SAl Viro struct delayed_call *done) 17292ab9cd1cSSteven Whitehouse { 17306b255391SAl Viro struct gfs2_inode *ip = GFS2_I(inode); 17312ab9cd1cSSteven Whitehouse struct gfs2_holder i_gh; 17322ab9cd1cSSteven Whitehouse struct buffer_head *dibh; 1733160b4026SSteven Whitehouse unsigned int size; 17342ab9cd1cSSteven Whitehouse char *buf; 17352ab9cd1cSSteven Whitehouse int error; 17362ab9cd1cSSteven Whitehouse 17376b255391SAl Viro if (!dentry) 17386b255391SAl Viro return ERR_PTR(-ECHILD); 17396b255391SAl Viro 17402ab9cd1cSSteven Whitehouse gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh); 17412ab9cd1cSSteven Whitehouse error = gfs2_glock_nq(&i_gh); 17422ab9cd1cSSteven Whitehouse if (error) { 17432ab9cd1cSSteven Whitehouse gfs2_holder_uninit(&i_gh); 1744680baacbSAl Viro return ERR_PTR(error); 17452ab9cd1cSSteven Whitehouse } 17462ab9cd1cSSteven Whitehouse 17472ab9cd1cSSteven Whitehouse size = (unsigned int)i_size_read(&ip->i_inode); 17482ab9cd1cSSteven Whitehouse if (size == 0) { 17492ab9cd1cSSteven Whitehouse gfs2_consist_inode(ip); 17502ab9cd1cSSteven Whitehouse buf = ERR_PTR(-EIO); 17512ab9cd1cSSteven Whitehouse goto out; 17522ab9cd1cSSteven Whitehouse } 17532ab9cd1cSSteven Whitehouse 17542ab9cd1cSSteven Whitehouse error = gfs2_meta_inode_buffer(ip, &dibh); 17552ab9cd1cSSteven Whitehouse if (error) { 17562ab9cd1cSSteven Whitehouse buf = ERR_PTR(error); 17572ab9cd1cSSteven Whitehouse goto out; 17582ab9cd1cSSteven Whitehouse } 17592ab9cd1cSSteven Whitehouse 1760160b4026SSteven Whitehouse buf = kzalloc(size + 1, GFP_NOFS); 17612ab9cd1cSSteven Whitehouse if (!buf) 17622ab9cd1cSSteven Whitehouse buf = ERR_PTR(-ENOMEM); 17632ab9cd1cSSteven Whitehouse else 1764160b4026SSteven Whitehouse memcpy(buf, dibh->b_data + sizeof(struct gfs2_dinode), size); 17652ab9cd1cSSteven Whitehouse brelse(dibh); 17662ab9cd1cSSteven Whitehouse out: 17672ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&i_gh); 1768680baacbSAl Viro if (!IS_ERR(buf)) 1769fceef393SAl Viro set_delayed_call(done, kfree_link, buf); 1770680baacbSAl Viro return buf; 17712ab9cd1cSSteven Whitehouse } 17722ab9cd1cSSteven Whitehouse 17732ab9cd1cSSteven Whitehouse /** 17742ab9cd1cSSteven Whitehouse * gfs2_permission - 17752ab9cd1cSSteven Whitehouse * @inode: The inode 17762ab9cd1cSSteven Whitehouse * @mask: The mask to be tested 17772ab9cd1cSSteven Whitehouse * @flags: Indicates whether this is an RCU path walk or not 17782ab9cd1cSSteven Whitehouse * 17792ab9cd1cSSteven Whitehouse * This may be called from the VFS directly, or from within GFS2 with the 17802ab9cd1cSSteven Whitehouse * inode locked, so we look to see if the glock is already locked and only 17812ab9cd1cSSteven Whitehouse * lock the glock if its not already been done. 17822ab9cd1cSSteven Whitehouse * 17832ab9cd1cSSteven Whitehouse * Returns: errno 17842ab9cd1cSSteven Whitehouse */ 17852ab9cd1cSSteven Whitehouse 178610556cb2SAl Viro int gfs2_permission(struct inode *inode, int mask) 17872ab9cd1cSSteven Whitehouse { 17882ab9cd1cSSteven Whitehouse struct gfs2_inode *ip; 17892ab9cd1cSSteven Whitehouse struct gfs2_holder i_gh; 17902ab9cd1cSSteven Whitehouse int error; 17912ab9cd1cSSteven Whitehouse 17926df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&i_gh); 17932ab9cd1cSSteven Whitehouse ip = GFS2_I(inode); 17942ab9cd1cSSteven Whitehouse if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) { 179510556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 17962ab9cd1cSSteven Whitehouse return -ECHILD; 17972ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); 17982ab9cd1cSSteven Whitehouse if (error) 17992ab9cd1cSSteven Whitehouse return error; 18002ab9cd1cSSteven Whitehouse } 18012ab9cd1cSSteven Whitehouse 18022ab9cd1cSSteven Whitehouse if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode)) 1803337684a1SEryu Guan error = -EPERM; 18042ab9cd1cSSteven Whitehouse else 18052830ba7fSAl Viro error = generic_permission(inode, mask); 18066df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&i_gh)) 18072ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&i_gh); 18082ab9cd1cSSteven Whitehouse 18092ab9cd1cSSteven Whitehouse return error; 18102ab9cd1cSSteven Whitehouse } 18112ab9cd1cSSteven Whitehouse 1812ab9bbda0SSteven Whitehouse static int __gfs2_setattr_simple(struct inode *inode, struct iattr *attr) 18132ab9cd1cSSteven Whitehouse { 18142ab9cd1cSSteven Whitehouse setattr_copy(inode, attr); 18152ab9cd1cSSteven Whitehouse mark_inode_dirty(inode); 18162ab9cd1cSSteven Whitehouse return 0; 18172ab9cd1cSSteven Whitehouse } 18182ab9cd1cSSteven Whitehouse 18192ab9cd1cSSteven Whitehouse /** 18202ab9cd1cSSteven Whitehouse * gfs2_setattr_simple - 18212ab9cd1cSSteven Whitehouse * @ip: 18222ab9cd1cSSteven Whitehouse * @attr: 18232ab9cd1cSSteven Whitehouse * 18242ab9cd1cSSteven Whitehouse * Returns: errno 18252ab9cd1cSSteven Whitehouse */ 18262ab9cd1cSSteven Whitehouse 1827ab9bbda0SSteven Whitehouse int gfs2_setattr_simple(struct inode *inode, struct iattr *attr) 18282ab9cd1cSSteven Whitehouse { 18292ab9cd1cSSteven Whitehouse int error; 18302ab9cd1cSSteven Whitehouse 18312ab9cd1cSSteven Whitehouse if (current->journal_info) 1832ab9bbda0SSteven Whitehouse return __gfs2_setattr_simple(inode, attr); 18332ab9cd1cSSteven Whitehouse 1834ab9bbda0SSteven Whitehouse error = gfs2_trans_begin(GFS2_SB(inode), RES_DINODE, 0); 18352ab9cd1cSSteven Whitehouse if (error) 18362ab9cd1cSSteven Whitehouse return error; 18372ab9cd1cSSteven Whitehouse 1838ab9bbda0SSteven Whitehouse error = __gfs2_setattr_simple(inode, attr); 1839ab9bbda0SSteven Whitehouse gfs2_trans_end(GFS2_SB(inode)); 18402ab9cd1cSSteven Whitehouse return error; 18412ab9cd1cSSteven Whitehouse } 18422ab9cd1cSSteven Whitehouse 18432ab9cd1cSSteven Whitehouse static int setattr_chown(struct inode *inode, struct iattr *attr) 18442ab9cd1cSSteven Whitehouse { 18452ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 18462ab9cd1cSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 18477c06b5d6SEric W. Biederman kuid_t ouid, nuid; 18487c06b5d6SEric W. Biederman kgid_t ogid, ngid; 18492ab9cd1cSSteven Whitehouse int error; 1850b8fbf471SAbhi Das struct gfs2_alloc_parms ap; 18512ab9cd1cSSteven Whitehouse 18522ab9cd1cSSteven Whitehouse ouid = inode->i_uid; 18532ab9cd1cSSteven Whitehouse ogid = inode->i_gid; 18542ab9cd1cSSteven Whitehouse nuid = attr->ia_uid; 18552ab9cd1cSSteven Whitehouse ngid = attr->ia_gid; 18562ab9cd1cSSteven Whitehouse 18576b24c0d2SEric W. Biederman if (!(attr->ia_valid & ATTR_UID) || uid_eq(ouid, nuid)) 1858f4108a60SEric W. Biederman ouid = nuid = NO_UID_QUOTA_CHANGE; 18596b24c0d2SEric W. Biederman if (!(attr->ia_valid & ATTR_GID) || gid_eq(ogid, ngid)) 1860f4108a60SEric W. Biederman ogid = ngid = NO_GID_QUOTA_CHANGE; 18612ab9cd1cSSteven Whitehouse 1862b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ip); 186362e96cf8SBob Peterson if (error) 186462e96cf8SBob Peterson goto out; 186562e96cf8SBob Peterson 186662e96cf8SBob Peterson error = gfs2_rindex_update(sdp); 186762e96cf8SBob Peterson if (error) 186862e96cf8SBob Peterson goto out; 186962e96cf8SBob Peterson 187062e96cf8SBob Peterson error = gfs2_quota_lock(ip, nuid, ngid); 187162e96cf8SBob Peterson if (error) 187262e96cf8SBob Peterson goto out; 187362e96cf8SBob Peterson 1874b8fbf471SAbhi Das ap.target = gfs2_get_inode_blocks(&ip->i_inode); 1875b8fbf471SAbhi Das 18766b24c0d2SEric W. Biederman if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) || 18776b24c0d2SEric W. Biederman !gid_eq(ogid, NO_GID_QUOTA_CHANGE)) { 1878b8fbf471SAbhi Das error = gfs2_quota_check(ip, nuid, ngid, &ap); 18792ab9cd1cSSteven Whitehouse if (error) 18802ab9cd1cSSteven Whitehouse goto out_gunlock_q; 18812ab9cd1cSSteven Whitehouse } 18822ab9cd1cSSteven Whitehouse 18832ab9cd1cSSteven Whitehouse error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0); 18842ab9cd1cSSteven Whitehouse if (error) 18852ab9cd1cSSteven Whitehouse goto out_gunlock_q; 18862ab9cd1cSSteven Whitehouse 1887ab9bbda0SSteven Whitehouse error = gfs2_setattr_simple(inode, attr); 18882ab9cd1cSSteven Whitehouse if (error) 18892ab9cd1cSSteven Whitehouse goto out_end_trans; 18902ab9cd1cSSteven Whitehouse 18916b24c0d2SEric W. Biederman if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) || 18926b24c0d2SEric W. Biederman !gid_eq(ogid, NO_GID_QUOTA_CHANGE)) { 189339a72580SAbhi Das gfs2_quota_change(ip, -(s64)ap.target, ouid, ogid); 1894b8fbf471SAbhi Das gfs2_quota_change(ip, ap.target, nuid, ngid); 18952ab9cd1cSSteven Whitehouse } 18962ab9cd1cSSteven Whitehouse 18972ab9cd1cSSteven Whitehouse out_end_trans: 18982ab9cd1cSSteven Whitehouse gfs2_trans_end(sdp); 18992ab9cd1cSSteven Whitehouse out_gunlock_q: 19002ab9cd1cSSteven Whitehouse gfs2_quota_unlock(ip); 190162e96cf8SBob Peterson out: 19022ab9cd1cSSteven Whitehouse return error; 19032ab9cd1cSSteven Whitehouse } 19042ab9cd1cSSteven Whitehouse 19052ab9cd1cSSteven Whitehouse /** 19062ab9cd1cSSteven Whitehouse * gfs2_setattr - Change attributes on an inode 19072ab9cd1cSSteven Whitehouse * @dentry: The dentry which is changing 19082ab9cd1cSSteven Whitehouse * @attr: The structure describing the change 19092ab9cd1cSSteven Whitehouse * 19102ab9cd1cSSteven Whitehouse * The VFS layer wants to change one or more of an inodes attributes. Write 19112ab9cd1cSSteven Whitehouse * that change out to disk. 19122ab9cd1cSSteven Whitehouse * 19132ab9cd1cSSteven Whitehouse * Returns: errno 19142ab9cd1cSSteven Whitehouse */ 19152ab9cd1cSSteven Whitehouse 19162ab9cd1cSSteven Whitehouse static int gfs2_setattr(struct dentry *dentry, struct iattr *attr) 19172ab9cd1cSSteven Whitehouse { 19182b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 19192ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 19202ab9cd1cSSteven Whitehouse struct gfs2_holder i_gh; 19212ab9cd1cSSteven Whitehouse int error; 19222ab9cd1cSSteven Whitehouse 1923b54e9a0bSBob Peterson error = gfs2_rsqa_alloc(ip); 19240a305e49SBob Peterson if (error) 19250a305e49SBob Peterson return error; 19260a305e49SBob Peterson 19272ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); 19282ab9cd1cSSteven Whitehouse if (error) 19292ab9cd1cSSteven Whitehouse return error; 19302ab9cd1cSSteven Whitehouse 19312ab9cd1cSSteven Whitehouse error = -EPERM; 19322ab9cd1cSSteven Whitehouse if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) 19332ab9cd1cSSteven Whitehouse goto out; 19342ab9cd1cSSteven Whitehouse 1935*31051c85SJan Kara error = setattr_prepare(dentry, attr); 19362ab9cd1cSSteven Whitehouse if (error) 19372ab9cd1cSSteven Whitehouse goto out; 19382ab9cd1cSSteven Whitehouse 19392ab9cd1cSSteven Whitehouse if (attr->ia_valid & ATTR_SIZE) 19402ab9cd1cSSteven Whitehouse error = gfs2_setattr_size(inode, attr->ia_size); 19412ab9cd1cSSteven Whitehouse else if (attr->ia_valid & (ATTR_UID | ATTR_GID)) 19422ab9cd1cSSteven Whitehouse error = setattr_chown(inode, attr); 1943e01580bfSChristoph Hellwig else { 1944ab9bbda0SSteven Whitehouse error = gfs2_setattr_simple(inode, attr); 1945e01580bfSChristoph Hellwig if (!error && attr->ia_valid & ATTR_MODE) 1946e01580bfSChristoph Hellwig error = posix_acl_chmod(inode, inode->i_mode); 1947e01580bfSChristoph Hellwig } 19482ab9cd1cSSteven Whitehouse 19492ab9cd1cSSteven Whitehouse out: 19502ab9cd1cSSteven Whitehouse if (!error) 19512ab9cd1cSSteven Whitehouse mark_inode_dirty(inode); 1952ab9bbda0SSteven Whitehouse gfs2_glock_dq_uninit(&i_gh); 19532ab9cd1cSSteven Whitehouse return error; 19542ab9cd1cSSteven Whitehouse } 19552ab9cd1cSSteven Whitehouse 19562ab9cd1cSSteven Whitehouse /** 19572ab9cd1cSSteven Whitehouse * gfs2_getattr - Read out an inode's attributes 19582ab9cd1cSSteven Whitehouse * @mnt: The vfsmount the inode is being accessed from 19592ab9cd1cSSteven Whitehouse * @dentry: The dentry to stat 19602ab9cd1cSSteven Whitehouse * @stat: The inode's stats 19612ab9cd1cSSteven Whitehouse * 19622ab9cd1cSSteven Whitehouse * This may be called from the VFS directly, or from within GFS2 with the 19632ab9cd1cSSteven Whitehouse * inode locked, so we look to see if the glock is already locked and only 19642ab9cd1cSSteven Whitehouse * lock the glock if its not already been done. Note that its the NFS 19652ab9cd1cSSteven Whitehouse * readdirplus operation which causes this to be called (from filldir) 19662ab9cd1cSSteven Whitehouse * with the glock already held. 19672ab9cd1cSSteven Whitehouse * 19682ab9cd1cSSteven Whitehouse * Returns: errno 19692ab9cd1cSSteven Whitehouse */ 19702ab9cd1cSSteven Whitehouse 19712ab9cd1cSSteven Whitehouse static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry, 19722ab9cd1cSSteven Whitehouse struct kstat *stat) 19732ab9cd1cSSteven Whitehouse { 19742b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 19752ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 19762ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 19772ab9cd1cSSteven Whitehouse int error; 19782ab9cd1cSSteven Whitehouse 19796df9f9a2SAndreas Gruenbacher gfs2_holder_mark_uninitialized(&gh); 19802ab9cd1cSSteven Whitehouse if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) { 19812ab9cd1cSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); 19822ab9cd1cSSteven Whitehouse if (error) 19832ab9cd1cSSteven Whitehouse return error; 19842ab9cd1cSSteven Whitehouse } 19852ab9cd1cSSteven Whitehouse 19862ab9cd1cSSteven Whitehouse generic_fillattr(inode, stat); 19876df9f9a2SAndreas Gruenbacher if (gfs2_holder_initialized(&gh)) 19882ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&gh); 19892ab9cd1cSSteven Whitehouse 19902ab9cd1cSSteven Whitehouse return 0; 19912ab9cd1cSSteven Whitehouse } 19922ab9cd1cSSteven Whitehouse 19932ab9cd1cSSteven Whitehouse static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 19942ab9cd1cSSteven Whitehouse u64 start, u64 len) 19952ab9cd1cSSteven Whitehouse { 19962ab9cd1cSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 19972ab9cd1cSSteven Whitehouse struct gfs2_holder gh; 19982ab9cd1cSSteven Whitehouse int ret; 19992ab9cd1cSSteven Whitehouse 20002ab9cd1cSSteven Whitehouse ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC); 20012ab9cd1cSSteven Whitehouse if (ret) 20022ab9cd1cSSteven Whitehouse return ret; 20032ab9cd1cSSteven Whitehouse 20045955102cSAl Viro inode_lock(inode); 20052ab9cd1cSSteven Whitehouse 20062ab9cd1cSSteven Whitehouse ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh); 20072ab9cd1cSSteven Whitehouse if (ret) 20082ab9cd1cSSteven Whitehouse goto out; 20092ab9cd1cSSteven Whitehouse 20102ab9cd1cSSteven Whitehouse if (gfs2_is_stuffed(ip)) { 20112ab9cd1cSSteven Whitehouse u64 phys = ip->i_no_addr << inode->i_blkbits; 20122ab9cd1cSSteven Whitehouse u64 size = i_size_read(inode); 20132ab9cd1cSSteven Whitehouse u32 flags = FIEMAP_EXTENT_LAST|FIEMAP_EXTENT_NOT_ALIGNED| 20142ab9cd1cSSteven Whitehouse FIEMAP_EXTENT_DATA_INLINE; 20152ab9cd1cSSteven Whitehouse phys += sizeof(struct gfs2_dinode); 20162ab9cd1cSSteven Whitehouse phys += start; 20172ab9cd1cSSteven Whitehouse if (start + len > size) 20182ab9cd1cSSteven Whitehouse len = size - start; 20192ab9cd1cSSteven Whitehouse if (start < size) 20202ab9cd1cSSteven Whitehouse ret = fiemap_fill_next_extent(fieinfo, start, phys, 20212ab9cd1cSSteven Whitehouse len, flags); 20222ab9cd1cSSteven Whitehouse if (ret == 1) 20232ab9cd1cSSteven Whitehouse ret = 0; 20242ab9cd1cSSteven Whitehouse } else { 20252ab9cd1cSSteven Whitehouse ret = __generic_block_fiemap(inode, fieinfo, start, len, 20262ab9cd1cSSteven Whitehouse gfs2_block_map); 20272ab9cd1cSSteven Whitehouse } 20282ab9cd1cSSteven Whitehouse 20292ab9cd1cSSteven Whitehouse gfs2_glock_dq_uninit(&gh); 20302ab9cd1cSSteven Whitehouse out: 20315955102cSAl Viro inode_unlock(inode); 20322ab9cd1cSSteven Whitehouse return ret; 20332ab9cd1cSSteven Whitehouse } 20342ab9cd1cSSteven Whitehouse 20352ab9cd1cSSteven Whitehouse const struct inode_operations gfs2_file_iops = { 20362ab9cd1cSSteven Whitehouse .permission = gfs2_permission, 20372ab9cd1cSSteven Whitehouse .setattr = gfs2_setattr, 20382ab9cd1cSSteven Whitehouse .getattr = gfs2_getattr, 20391a39ba99SAl Viro .setxattr = generic_setxattr, 20401a39ba99SAl Viro .getxattr = generic_getxattr, 20412ab9cd1cSSteven Whitehouse .listxattr = gfs2_listxattr, 20421a39ba99SAl Viro .removexattr = generic_removexattr, 20432ab9cd1cSSteven Whitehouse .fiemap = gfs2_fiemap, 20444e34e719SChristoph Hellwig .get_acl = gfs2_get_acl, 2045e01580bfSChristoph Hellwig .set_acl = gfs2_set_acl, 20462ab9cd1cSSteven Whitehouse }; 20472ab9cd1cSSteven Whitehouse 20482ab9cd1cSSteven Whitehouse const struct inode_operations gfs2_dir_iops = { 20492ab9cd1cSSteven Whitehouse .create = gfs2_create, 20502ab9cd1cSSteven Whitehouse .lookup = gfs2_lookup, 20512ab9cd1cSSteven Whitehouse .link = gfs2_link, 20522ab9cd1cSSteven Whitehouse .unlink = gfs2_unlink, 20532ab9cd1cSSteven Whitehouse .symlink = gfs2_symlink, 20542ab9cd1cSSteven Whitehouse .mkdir = gfs2_mkdir, 20552ab9cd1cSSteven Whitehouse .rmdir = gfs2_unlink, 20562ab9cd1cSSteven Whitehouse .mknod = gfs2_mknod, 2057a63b7bbcSBenjamin Marzinski .rename2 = gfs2_rename2, 20582ab9cd1cSSteven Whitehouse .permission = gfs2_permission, 20592ab9cd1cSSteven Whitehouse .setattr = gfs2_setattr, 20602ab9cd1cSSteven Whitehouse .getattr = gfs2_getattr, 20611a39ba99SAl Viro .setxattr = generic_setxattr, 20621a39ba99SAl Viro .getxattr = generic_getxattr, 20632ab9cd1cSSteven Whitehouse .listxattr = gfs2_listxattr, 20641a39ba99SAl Viro .removexattr = generic_removexattr, 20652ab9cd1cSSteven Whitehouse .fiemap = gfs2_fiemap, 20664e34e719SChristoph Hellwig .get_acl = gfs2_get_acl, 2067e01580bfSChristoph Hellwig .set_acl = gfs2_set_acl, 20686d4ade98SSteven Whitehouse .atomic_open = gfs2_atomic_open, 20692ab9cd1cSSteven Whitehouse }; 20702ab9cd1cSSteven Whitehouse 20712ab9cd1cSSteven Whitehouse const struct inode_operations gfs2_symlink_iops = { 20722ab9cd1cSSteven Whitehouse .readlink = generic_readlink, 20736b255391SAl Viro .get_link = gfs2_get_link, 20742ab9cd1cSSteven Whitehouse .permission = gfs2_permission, 20752ab9cd1cSSteven Whitehouse .setattr = gfs2_setattr, 20762ab9cd1cSSteven Whitehouse .getattr = gfs2_getattr, 20771a39ba99SAl Viro .setxattr = generic_setxattr, 20781a39ba99SAl Viro .getxattr = generic_getxattr, 20792ab9cd1cSSteven Whitehouse .listxattr = gfs2_listxattr, 20801a39ba99SAl Viro .removexattr = generic_removexattr, 20812ab9cd1cSSteven Whitehouse .fiemap = gfs2_fiemap, 20822ab9cd1cSSteven Whitehouse }; 20832ab9cd1cSSteven Whitehouse 2084