2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
10 #include <linux/slab.h>
11 #include <linux/spinlock.h>
12 #include <linux/completion.h>
13 #include <linux/buffer_head.h>
14 #include <linux/namei.h>
16 #include <linux/xattr.h>
17 #include <linux/posix_acl.h>
18 #include <linux/gfs2_ondisk.h>
19 #include <linux/crc32.h>
20 #include <linux/fiemap.h>
21 #include <linux/security.h>
22 #include <asm/uaccess.h>
40 struct gfs2_skip_data {
46 static int iget_test(struct inode *inode, void *opaque)
48 struct gfs2_inode *ip = GFS2_I(inode);
49 struct gfs2_skip_data *data = opaque;
51 if (ip->i_no_addr == data->no_addr) {
52 if (data->non_block &&
53 inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)) {
62 static int iget_set(struct inode *inode, void *opaque)
64 struct gfs2_inode *ip = GFS2_I(inode);
65 struct gfs2_skip_data *data = opaque;
69 inode->i_ino = (unsigned long)(data->no_addr);
70 ip->i_no_addr = data->no_addr;
74 struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr, int non_block)
76 unsigned long hash = (unsigned long)no_addr;
77 struct gfs2_skip_data data;
79 data.no_addr = no_addr;
81 data.non_block = non_block;
82 return ilookup5(sb, hash, iget_test, &data);
85 static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr,
88 struct gfs2_skip_data data;
89 unsigned long hash = (unsigned long)no_addr;
91 data.no_addr = no_addr;
93 data.non_block = non_block;
94 return iget5_locked(sb, hash, iget_test, iget_set, &data);
98 * gfs2_set_iop - Sets inode operations
99 * @inode: The inode with correct i_mode filled in
101 * GFS2 lookup code fills in vfs inode contents based on info obtained
102 * from directory entry inside gfs2_inode_lookup().
105 static void gfs2_set_iop(struct inode *inode)
107 struct gfs2_sbd *sdp = GFS2_SB(inode);
108 umode_t mode = inode->i_mode;
111 inode->i_op = &gfs2_file_iops;
112 if (gfs2_localflocks(sdp))
113 inode->i_fop = &gfs2_file_fops_nolock;
115 inode->i_fop = &gfs2_file_fops;
116 } else if (S_ISDIR(mode)) {
117 inode->i_op = &gfs2_dir_iops;
118 if (gfs2_localflocks(sdp))
119 inode->i_fop = &gfs2_dir_fops_nolock;
121 inode->i_fop = &gfs2_dir_fops;
122 } else if (S_ISLNK(mode)) {
123 inode->i_op = &gfs2_symlink_iops;
125 inode->i_op = &gfs2_file_iops;
126 init_special_inode(inode, inode->i_mode, inode->i_rdev);
131 * gfs2_inode_lookup - Lookup an inode
132 * @sb: The super block
133 * @no_addr: The inode number
134 * @type: The type of the inode
135 * non_block: Can we block on inodes that are being freed?
137 * Returns: A VFS inode, or an error
140 struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type,
141 u64 no_addr, u64 no_formal_ino, int non_block)
144 struct gfs2_inode *ip;
145 struct gfs2_glock *io_gl = NULL;
148 inode = gfs2_iget(sb, no_addr, non_block);
152 return ERR_PTR(-ENOMEM);
154 if (inode->i_state & I_NEW) {
155 struct gfs2_sbd *sdp = GFS2_SB(inode);
156 ip->i_no_formal_ino = no_formal_ino;
158 error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
161 ip->i_gl->gl_object = ip;
163 error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
167 set_bit(GIF_INVALID, &ip->i_flags);
168 error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
172 ip->i_iopen_gh.gh_gl->gl_object = ip;
173 gfs2_glock_put(io_gl);
176 if (type == DT_UNKNOWN) {
177 /* Inode glock must be locked already */
178 error = gfs2_inode_refresh(GFS2_I(inode));
182 inode->i_mode = DT2IF(type);
186 unlock_new_inode(inode);
192 ip->i_iopen_gh.gh_flags |= GL_NOCACHE;
193 ip->i_iopen_gh.gh_gl->gl_object = NULL;
194 gfs2_glock_dq_uninit(&ip->i_iopen_gh);
197 gfs2_glock_put(io_gl);
199 ip->i_gl->gl_object = NULL;
200 gfs2_glock_put(ip->i_gl);
203 return ERR_PTR(error);
206 struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
207 u64 *no_formal_ino, unsigned int blktype)
209 struct super_block *sb = sdp->sd_vfs;
210 struct gfs2_holder i_gh;
211 struct inode *inode = NULL;
214 /* Must not read in block until block type is verified */
215 error = gfs2_glock_nq_num(sdp, no_addr, &gfs2_inode_glops,
216 LM_ST_EXCLUSIVE, GL_SKIP, &i_gh);
218 return ERR_PTR(error);
220 error = gfs2_check_blk_type(sdp, no_addr, blktype);
224 inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, 0, 1);
228 /* Two extra checks for NFS only */
231 if (GFS2_I(inode)->i_no_formal_ino != *no_formal_ino)
235 if (GFS2_I(inode)->i_diskflags & GFS2_DIF_SYSTEM)
242 gfs2_glock_dq_uninit(&i_gh);
243 return error ? ERR_PTR(error) : inode;
250 struct inode *gfs2_lookup_simple(struct inode *dip, const char *name)
254 gfs2_str2qstr(&qstr, name);
255 inode = gfs2_lookupi(dip, &qstr, 1);
256 /* gfs2_lookupi has inconsistent callers: vfs
257 * related routines expect NULL for no entry found,
258 * gfs2_lookup_simple callers expect ENOENT
259 * and do not check for NULL.
262 return ERR_PTR(-ENOENT);
269 * gfs2_lookupi - Look up a filename in a directory and return its inode
270 * @d_gh: An initialized holder for the directory glock
271 * @name: The name of the inode to look for
272 * @is_root: If 1, ignore the caller's permissions
273 * @i_gh: An uninitialized holder for the new inode glock
275 * This can be called via the VFS filldir function when NFS is doing
276 * a readdirplus and the inode which its intending to stat isn't
277 * already in cache. In this case we must not take the directory glock
278 * again, since the readdir call will have already taken that lock.
283 struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
286 struct super_block *sb = dir->i_sb;
287 struct gfs2_inode *dip = GFS2_I(dir);
288 struct gfs2_holder d_gh;
290 struct inode *inode = NULL;
293 if (!name->len || name->len > GFS2_FNAMESIZE)
294 return ERR_PTR(-ENAMETOOLONG);
296 if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) ||
297 (name->len == 2 && memcmp(name->name, "..", 2) == 0 &&
298 dir == sb->s_root->d_inode)) {
303 if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) {
304 error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
306 return ERR_PTR(error);
311 error = gfs2_permission(dir, MAY_EXEC);
316 inode = gfs2_dir_search(dir, name, false);
318 error = PTR_ERR(inode);
321 gfs2_glock_dq_uninit(&d_gh);
322 if (error == -ENOENT)
324 return inode ? inode : ERR_PTR(error);
328 * create_ok - OK to create a new on-disk inode here?
329 * @dip: Directory in which dinode is to be created
330 * @name: Name of new dinode
336 static int create_ok(struct gfs2_inode *dip, const struct qstr *name,
341 error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC);
345 /* Don't create entries in an unlinked directory */
346 if (!dip->i_inode.i_nlink)
349 if (dip->i_entries == (u32)-1)
351 if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1)
357 static void munge_mode_uid_gid(const struct gfs2_inode *dip,
360 if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir &&
361 (dip->i_inode.i_mode & S_ISUID) &&
362 !uid_eq(dip->i_inode.i_uid, GLOBAL_ROOT_UID)) {
363 if (S_ISDIR(inode->i_mode))
364 inode->i_mode |= S_ISUID;
365 else if (!uid_eq(dip->i_inode.i_uid, current_fsuid()))
366 inode->i_mode &= ~07111;
367 inode->i_uid = dip->i_inode.i_uid;
369 inode->i_uid = current_fsuid();
371 if (dip->i_inode.i_mode & S_ISGID) {
372 if (S_ISDIR(inode->i_mode))
373 inode->i_mode |= S_ISGID;
374 inode->i_gid = dip->i_inode.i_gid;
376 inode->i_gid = current_fsgid();
379 static int alloc_dinode(struct gfs2_inode *ip, u32 flags, unsigned *dblocks)
381 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
382 struct gfs2_alloc_parms ap = { .target = *dblocks, .aflags = flags, };
385 error = gfs2_quota_lock_check(ip);
389 error = gfs2_inplace_reserve(ip, &ap);
393 error = gfs2_trans_begin(sdp, (*dblocks * RES_RG_BIT) + RES_STATFS + RES_QUOTA, 0);
397 error = gfs2_alloc_blocks(ip, &ip->i_no_addr, dblocks, 1, &ip->i_generation);
398 ip->i_no_formal_ino = ip->i_generation;
399 ip->i_inode.i_ino = ip->i_no_addr;
400 ip->i_goal = ip->i_no_addr;
405 gfs2_inplace_release(ip);
407 gfs2_quota_unlock(ip);
412 static void gfs2_init_dir(struct buffer_head *dibh,
413 const struct gfs2_inode *parent)
415 struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data;
416 struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1);
418 gfs2_qstr2dirent(&gfs2_qdot, GFS2_DIRENT_SIZE(gfs2_qdot.len), dent);
419 dent->de_inum = di->di_num; /* already GFS2 endian */
420 dent->de_type = cpu_to_be16(DT_DIR);
422 dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1));
423 gfs2_qstr2dirent(&gfs2_qdotdot, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent);
424 gfs2_inum_out(parent, dent);
425 dent->de_type = cpu_to_be16(DT_DIR);
430 * gfs2_init_xattr - Initialise an xattr block for a new inode
431 * @ip: The inode in question
433 * This sets up an empty xattr block for a new inode, ready to
434 * take any ACLs, LSM xattrs, etc.
437 static void gfs2_init_xattr(struct gfs2_inode *ip)
439 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
440 struct buffer_head *bh;
441 struct gfs2_ea_header *ea;
443 bh = gfs2_meta_new(ip->i_gl, ip->i_eattr);
444 gfs2_trans_add_meta(ip->i_gl, bh);
445 gfs2_metatype_set(bh, GFS2_METATYPE_EA, GFS2_FORMAT_EA);
446 gfs2_buffer_clear_tail(bh, sizeof(struct gfs2_meta_header));
448 ea = GFS2_EA_BH2FIRST(bh);
449 ea->ea_rec_len = cpu_to_be32(sdp->sd_jbsize);
450 ea->ea_type = GFS2_EATYPE_UNUSED;
451 ea->ea_flags = GFS2_EAFLAG_LAST;
457 * init_dinode - Fill in a new dinode structure
458 * @dip: The directory this inode is being created in
460 * @symname: The symlink destination (if a symlink)
461 * @bhp: The buffer head (returned to caller)
465 static void init_dinode(struct gfs2_inode *dip, struct gfs2_inode *ip,
468 struct gfs2_dinode *di;
469 struct buffer_head *dibh;
471 dibh = gfs2_meta_new(ip->i_gl, ip->i_no_addr);
472 gfs2_trans_add_meta(ip->i_gl, dibh);
473 di = (struct gfs2_dinode *)dibh->b_data;
474 gfs2_dinode_out(ip, di);
476 di->di_major = cpu_to_be32(MAJOR(ip->i_inode.i_rdev));
477 di->di_minor = cpu_to_be32(MINOR(ip->i_inode.i_rdev));
481 memset(&di->__pad4, 0, sizeof(di->__pad4));
482 memset(&di->di_reserved, 0, sizeof(di->di_reserved));
483 gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
485 switch(ip->i_inode.i_mode & S_IFMT) {
487 gfs2_init_dir(dibh, dip);
490 memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname, ip->i_inode.i_size);
494 set_buffer_uptodate(dibh);
499 * gfs2_trans_da_blocks - Calculate number of blocks to link inode
500 * @dip: The directory we are linking into
501 * @da: The dir add information
502 * @nr_inodes: The number of inodes involved
504 * This calculate the number of blocks we need to reserve in a
505 * transaction to link @nr_inodes into a directory. In most cases
506 * @nr_inodes will be 2 (the directory plus the inode being linked in)
507 * but in case of rename, 4 may be required.
509 * Returns: Number of blocks
512 static unsigned gfs2_trans_da_blks(const struct gfs2_inode *dip,
513 const struct gfs2_diradd *da,
516 return da->nr_blocks + gfs2_rg_blocks(dip, da->nr_blocks) +
517 (nr_inodes * RES_DINODE) + RES_QUOTA + RES_STATFS;
520 static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
521 struct gfs2_inode *ip, struct gfs2_diradd *da)
523 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
524 struct gfs2_alloc_parms ap = { .target = da->nr_blocks, };
528 error = gfs2_quota_lock_check(dip);
530 goto fail_quota_locks;
532 error = gfs2_inplace_reserve(dip, &ap);
534 goto fail_quota_locks;
536 error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(dip, da, 2), 0);
540 error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0);
542 goto fail_quota_locks;
545 error = gfs2_dir_add(&dip->i_inode, name, ip, da);
552 gfs2_inplace_release(dip);
554 gfs2_quota_unlock(dip);
558 static int gfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
561 const struct xattr *xattr;
564 for (xattr = xattr_array; xattr->name != NULL; xattr++) {
565 err = __gfs2_xattr_set(inode, xattr->name, xattr->value,
567 GFS2_EATYPE_SECURITY);
575 * gfs2_create_inode - Create a new inode
576 * @dir: The parent directory
577 * @dentry: The new dentry
578 * @file: If non-NULL, the file which is being opened
579 * @mode: The permissions on the new inode
580 * @dev: For device nodes, this is the device number
581 * @symname: For symlinks, this is the link destination
582 * @size: The initial size of the inode (ignored for directories)
584 * Returns: 0 on success, or error code
587 static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
589 umode_t mode, dev_t dev, const char *symname,
590 unsigned int size, int excl, int *opened)
592 const struct qstr *name = &dentry->d_name;
593 struct posix_acl *default_acl, *acl;
594 struct gfs2_holder ghs[2];
595 struct inode *inode = NULL;
596 struct gfs2_inode *dip = GFS2_I(dir), *ip;
597 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
598 struct gfs2_glock *io_gl;
600 int error, free_vfs_inode = 0;
603 struct gfs2_diradd da = { .bh = NULL, .save_loc = 1, };
605 if (!name->len || name->len > GFS2_FNAMESIZE)
606 return -ENAMETOOLONG;
608 error = gfs2_rs_alloc(dip);
612 error = gfs2_rindex_update(sdp);
616 error = gfs2_glock_nq_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
620 error = create_ok(dip, name, mode);
624 inode = gfs2_dir_search(dir, &dentry->d_name, !S_ISREG(mode) || excl);
625 error = PTR_ERR(inode);
626 if (!IS_ERR(inode)) {
627 d = d_splice_alias(inode, dentry);
635 if (S_ISREG(inode->i_mode)) {
637 error = finish_open(file, dentry, gfs2_open_common, opened);
639 error = finish_no_open(file, d);
644 gfs2_glock_dq_uninit(ghs);
646 } else if (error != -ENOENT) {
650 error = gfs2_diradd_alloc_required(dir, name, &da);
654 inode = new_inode(sdp->sd_vfs);
659 error = posix_acl_create(dir, &mode, &default_acl, &acl);
661 goto fail_free_vfs_inode;
664 error = gfs2_rs_alloc(ip);
668 inode->i_mode = mode;
669 set_nlink(inode, S_ISDIR(mode) ? 2 : 1);
671 inode->i_size = size;
672 inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
673 gfs2_set_inode_blocks(inode, 1);
674 munge_mode_uid_gid(dip, inode);
675 check_and_update_goal(dip);
676 ip->i_goal = dip->i_goal;
683 switch(mode & S_IFMT) {
685 if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) ||
686 gfs2_tune_get(sdp, gt_new_files_jdata))
687 ip->i_diskflags |= GFS2_DIF_JDATA;
688 gfs2_set_aops(inode);
691 ip->i_diskflags |= (dip->i_diskflags & GFS2_DIF_INHERIT_JDATA);
692 ip->i_diskflags |= GFS2_DIF_JDATA;
696 gfs2_set_inode_flags(inode);
698 if ((GFS2_I(sdp->sd_root_dir->d_inode) == dip) ||
699 (dip->i_diskflags & GFS2_DIF_TOPDIR))
700 aflags |= GFS2_AF_ORLOV;
702 if (default_acl || acl)
705 error = alloc_dinode(ip, aflags, &blocks);
707 goto fail_free_inode;
709 gfs2_set_inode_blocks(inode, blocks);
711 error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
713 goto fail_free_inode;
715 ip->i_gl->gl_object = ip;
716 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1);
718 goto fail_free_inode;
720 error = gfs2_trans_begin(sdp, blocks, 0);
725 ip->i_eattr = ip->i_no_addr + 1;
728 init_dinode(dip, ip, symname);
731 error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
735 error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
739 ip->i_iopen_gh.gh_gl->gl_object = ip;
740 gfs2_glock_put(io_gl);
742 insert_inode_hash(inode);
745 error = gfs2_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
746 posix_acl_release(default_acl);
750 error = gfs2_set_acl(inode, acl, ACL_TYPE_ACCESS);
751 posix_acl_release(acl);
757 error = security_inode_init_security(&ip->i_inode, &dip->i_inode, name,
758 &gfs2_initxattrs, NULL);
762 error = link_dinode(dip, name, ip, &da);
766 mark_inode_dirty(inode);
767 d_instantiate(dentry, inode);
769 *opened |= FILE_CREATED;
770 error = finish_open(file, dentry, gfs2_open_common, opened);
772 gfs2_glock_dq_uninit(ghs);
773 gfs2_glock_dq_uninit(ghs + 1);
777 gfs2_glock_dq_uninit(ghs + 1);
779 gfs2_glock_put(ip->i_gl);
783 gfs2_glock_dq_uninit(ghs + 1);
786 gfs2_glock_put(ip->i_gl);
787 gfs2_rs_delete(ip, NULL);
790 posix_acl_release(default_acl);
792 posix_acl_release(acl);
796 gfs2_dir_no_add(&da);
797 gfs2_glock_dq_uninit(ghs);
798 if (inode && !IS_ERR(inode)) {
801 mark_inode_dirty(inode);
802 set_bit(free_vfs_inode ? GIF_FREE_VFS_INODE : GIF_ALLOC_FAILED,
803 &GFS2_I(inode)->i_flags);
811 * gfs2_create - Create a file
812 * @dir: The directory in which to create the file
813 * @dentry: The dentry of the new file
814 * @mode: The mode of the new file
819 static int gfs2_create(struct inode *dir, struct dentry *dentry,
820 umode_t mode, bool excl)
822 return gfs2_create_inode(dir, dentry, NULL, S_IFREG | mode, 0, NULL, 0, excl, NULL);
826 * __gfs2_lookup - Look up a filename in a directory and return its inode
827 * @dir: The directory inode
828 * @dentry: The dentry of the new inode
829 * @file: File to be opened
830 * @opened: atomic_open flags
836 static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry,
837 struct file *file, int *opened)
841 struct gfs2_holder gh;
842 struct gfs2_glock *gl;
845 inode = gfs2_lookupi(dir, &dentry->d_name, 0);
851 return ERR_CAST(inode);
853 gl = GFS2_I(inode)->i_gl;
854 error = gfs2_glock_nq_init(gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
857 return ERR_PTR(error);
860 d = d_splice_alias(inode, dentry);
862 gfs2_glock_dq_uninit(&gh);
865 if (file && S_ISREG(inode->i_mode))
866 error = finish_open(file, dentry, gfs2_open_common, opened);
868 gfs2_glock_dq_uninit(&gh);
871 return ERR_PTR(error);
876 static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
879 return __gfs2_lookup(dir, dentry, NULL, NULL);
883 * gfs2_link - Link to a file
884 * @old_dentry: The inode to link
885 * @dir: Add link to this directory
886 * @dentry: The name of the link
888 * Link the inode in "old_dentry" into the directory "dir" with the
894 static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
895 struct dentry *dentry)
897 struct gfs2_inode *dip = GFS2_I(dir);
898 struct gfs2_sbd *sdp = GFS2_SB(dir);
899 struct inode *inode = old_dentry->d_inode;
900 struct gfs2_inode *ip = GFS2_I(inode);
901 struct gfs2_holder ghs[2];
902 struct buffer_head *dibh;
903 struct gfs2_diradd da = { .bh = NULL, .save_loc = 1, };
906 if (S_ISDIR(inode->i_mode))
909 error = gfs2_rs_alloc(dip);
913 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
914 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
916 error = gfs2_glock_nq(ghs); /* parent */
920 error = gfs2_glock_nq(ghs + 1); /* child */
925 if (inode->i_nlink == 0)
928 error = gfs2_permission(dir, MAY_WRITE | MAY_EXEC);
932 error = gfs2_dir_check(dir, &dentry->d_name, NULL);
943 if (!dip->i_inode.i_nlink)
946 if (dip->i_entries == (u32)-1)
949 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
952 if (!ip->i_inode.i_nlink)
955 if (ip->i_inode.i_nlink == (u32)-1)
958 error = gfs2_diradd_alloc_required(dir, &dentry->d_name, &da);
963 struct gfs2_alloc_parms ap = { .target = da.nr_blocks, };
964 error = gfs2_quota_lock_check(dip);
968 error = gfs2_inplace_reserve(dip, &ap);
972 error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(dip, &da, 2), 0);
976 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0);
981 error = gfs2_meta_inode_buffer(ip, &dibh);
985 error = gfs2_dir_add(dir, &dentry->d_name, ip, &da);
989 gfs2_trans_add_meta(ip->i_gl, dibh);
990 inc_nlink(&ip->i_inode);
991 ip->i_inode.i_ctime = CURRENT_TIME;
993 d_instantiate(dentry, inode);
994 mark_inode_dirty(inode);
1002 gfs2_inplace_release(dip);
1005 gfs2_quota_unlock(dip);
1007 gfs2_dir_no_add(&da);
1008 gfs2_glock_dq(ghs + 1);
1012 gfs2_holder_uninit(ghs);
1013 gfs2_holder_uninit(ghs + 1);
1018 * gfs2_unlink_ok - check to see that a inode is still in a directory
1019 * @dip: the directory
1020 * @name: the name of the file
1023 * Assumes that the lock on (at least) @dip is held.
1025 * Returns: 0 if the parent/child relationship is correct, errno if it isn't
1028 static int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
1029 const struct gfs2_inode *ip)
1033 if (IS_IMMUTABLE(&ip->i_inode) || IS_APPEND(&ip->i_inode))
1036 if ((dip->i_inode.i_mode & S_ISVTX) &&
1037 !uid_eq(dip->i_inode.i_uid, current_fsuid()) &&
1038 !uid_eq(ip->i_inode.i_uid, current_fsuid()) && !capable(CAP_FOWNER))
1041 if (IS_APPEND(&dip->i_inode))
1044 error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC);
1048 error = gfs2_dir_check(&dip->i_inode, name, ip);
1056 * gfs2_unlink_inode - Removes an inode from its parent dir and unlinks it
1057 * @dip: The parent directory
1058 * @name: The name of the entry in the parent directory
1059 * @inode: The inode to be removed
1061 * Called with all the locks and in a transaction. This will only be
1062 * called for a directory after it has been checked to ensure it is empty.
1064 * Returns: 0 on success, or an error
1067 static int gfs2_unlink_inode(struct gfs2_inode *dip,
1068 const struct dentry *dentry)
1070 struct inode *inode = dentry->d_inode;
1071 struct gfs2_inode *ip = GFS2_I(inode);
1074 error = gfs2_dir_del(dip, dentry);
1079 inode->i_ctime = CURRENT_TIME;
1080 if (S_ISDIR(inode->i_mode))
1084 mark_inode_dirty(inode);
1085 if (inode->i_nlink == 0)
1086 gfs2_unlink_di(inode);
1092 * gfs2_unlink - Unlink an inode (this does rmdir as well)
1093 * @dir: The inode of the directory containing the inode to unlink
1094 * @dentry: The file itself
1096 * This routine uses the type of the inode as a flag to figure out
1097 * whether this is an unlink or an rmdir.
1102 static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
1104 struct gfs2_inode *dip = GFS2_I(dir);
1105 struct gfs2_sbd *sdp = GFS2_SB(dir);
1106 struct inode *inode = dentry->d_inode;
1107 struct gfs2_inode *ip = GFS2_I(inode);
1108 struct gfs2_holder ghs[3];
1109 struct gfs2_rgrpd *rgd;
1112 error = gfs2_rindex_update(sdp);
1118 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
1119 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
1121 rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1);
1125 gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
1128 error = gfs2_glock_nq(ghs); /* parent */
1132 error = gfs2_glock_nq(ghs + 1); /* child */
1137 if (inode->i_nlink == 0)
1140 if (S_ISDIR(inode->i_mode)) {
1142 if (ip->i_entries > 2 || inode->i_nlink > 2)
1146 error = gfs2_glock_nq(ghs + 2); /* rgrp */
1150 error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
1154 error = gfs2_trans_begin(sdp, 2*RES_DINODE + 3*RES_LEAF + RES_RG_BIT, 0);
1158 error = gfs2_unlink_inode(dip, dentry);
1161 gfs2_trans_end(sdp);
1163 gfs2_glock_dq(ghs + 2);
1165 gfs2_glock_dq(ghs + 1);
1169 gfs2_holder_uninit(ghs + 2);
1171 gfs2_holder_uninit(ghs + 1);
1172 gfs2_holder_uninit(ghs);
1177 * gfs2_symlink - Create a symlink
1178 * @dir: The directory to create the symlink in
1179 * @dentry: The dentry to put the symlink in
1180 * @symname: The thing which the link points to
1185 static int gfs2_symlink(struct inode *dir, struct dentry *dentry,
1186 const char *symname)
1188 struct gfs2_sbd *sdp = GFS2_SB(dir);
1191 size = strlen(symname);
1192 if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1)
1193 return -ENAMETOOLONG;
1195 return gfs2_create_inode(dir, dentry, NULL, S_IFLNK | S_IRWXUGO, 0, symname, size, 0, NULL);
1199 * gfs2_mkdir - Make a directory
1200 * @dir: The parent directory of the new one
1201 * @dentry: The dentry of the new directory
1202 * @mode: The mode of the new directory
1207 static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
1209 struct gfs2_sbd *sdp = GFS2_SB(dir);
1210 unsigned dsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode);
1211 return gfs2_create_inode(dir, dentry, NULL, S_IFDIR | mode, 0, NULL, dsize, 0, NULL);
1215 * gfs2_mknod - Make a special file
1216 * @dir: The directory in which the special file will reside
1217 * @dentry: The dentry of the special file
1218 * @mode: The mode of the special file
1219 * @dev: The device specification of the special file
1223 static int gfs2_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
1226 return gfs2_create_inode(dir, dentry, NULL, mode, dev, NULL, 0, 0, NULL);
1230 * gfs2_atomic_open - Atomically open a file
1231 * @dir: The directory
1232 * @dentry: The proposed new entry
1233 * @file: The proposed new struct file
1234 * @flags: open flags
1236 * @opened: Flag to say whether the file has been opened or not
1238 * Returns: error code or 0 for success
1241 static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry,
1242 struct file *file, unsigned flags,
1243 umode_t mode, int *opened)
1246 bool excl = !!(flags & O_EXCL);
1248 if (!d_unhashed(dentry))
1251 d = __gfs2_lookup(dir, dentry, file, opened);
1256 if (dentry->d_inode) {
1257 if (!(*opened & FILE_OPENED)) {
1260 return finish_no_open(file, dentry);
1269 if (!(flags & O_CREAT))
1272 return gfs2_create_inode(dir, dentry, file, S_IFREG | mode, 0, NULL, 0, excl, opened);
1276 * gfs2_ok_to_move - check if it's ok to move a directory to another directory
1280 * Follow @to back to the root and make sure we don't encounter @this
1281 * Assumes we already hold the rename lock.
1286 static int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to)
1288 struct inode *dir = &to->i_inode;
1289 struct super_block *sb = dir->i_sb;
1296 if (dir == &this->i_inode) {
1300 if (dir == sb->s_root->d_inode) {
1305 tmp = gfs2_lookupi(dir, &gfs2_qdotdot, 1);
1311 error = PTR_ERR(tmp);
1325 * gfs2_rename - Rename a file
1326 * @odir: Parent directory of old file name
1327 * @odentry: The old dentry of the file
1328 * @ndir: Parent directory of new file name
1329 * @ndentry: The new dentry of the file
1334 static int gfs2_rename(struct inode *odir, struct dentry *odentry,
1335 struct inode *ndir, struct dentry *ndentry)
1337 struct gfs2_inode *odip = GFS2_I(odir);
1338 struct gfs2_inode *ndip = GFS2_I(ndir);
1339 struct gfs2_inode *ip = GFS2_I(odentry->d_inode);
1340 struct gfs2_inode *nip = NULL;
1341 struct gfs2_sbd *sdp = GFS2_SB(odir);
1342 struct gfs2_holder ghs[5], r_gh = { .gh_gl = NULL, };
1343 struct gfs2_rgrpd *nrgd;
1344 unsigned int num_gh;
1346 struct gfs2_diradd da = { .nr_blocks = 0, .save_loc = 0, };
1350 if (ndentry->d_inode) {
1351 nip = GFS2_I(ndentry->d_inode);
1356 error = gfs2_rindex_update(sdp);
1360 error = gfs2_rs_alloc(ndip);
1365 error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE,
1370 if (S_ISDIR(ip->i_inode.i_mode)) {
1372 /* don't move a dirctory into it's subdir */
1373 error = gfs2_ok_to_move(ip, ndip);
1380 gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
1382 gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
1385 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
1389 gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
1391 /* grab the resource lock for unlink flag twiddling
1392 * this is the case of the target file already existing
1393 * so we unlink before doing the rename
1395 nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr, 1);
1397 gfs2_holder_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
1400 for (x = 0; x < num_gh; x++) {
1401 error = gfs2_glock_nq(ghs + x);
1407 if (ip->i_inode.i_nlink == 0)
1410 /* Check out the old directory */
1412 error = gfs2_unlink_ok(odip, &odentry->d_name, ip);
1416 /* Check out the new directory */
1419 error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip);
1423 if (nip->i_inode.i_nlink == 0) {
1428 if (S_ISDIR(nip->i_inode.i_mode)) {
1429 if (nip->i_entries < 2) {
1430 gfs2_consist_inode(nip);
1434 if (nip->i_entries > 2) {
1440 error = gfs2_permission(ndir, MAY_WRITE | MAY_EXEC);
1444 error = gfs2_dir_check(ndir, &ndentry->d_name, NULL);
1456 if (!ndip->i_inode.i_nlink) {
1460 if (ndip->i_entries == (u32)-1) {
1464 if (S_ISDIR(ip->i_inode.i_mode) &&
1465 ndip->i_inode.i_nlink == (u32)-1) {
1472 /* Check out the dir to be renamed */
1475 error = gfs2_permission(odentry->d_inode, MAY_WRITE);
1481 error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name, &da);
1487 struct gfs2_alloc_parms ap = { .target = da.nr_blocks, };
1488 error = gfs2_quota_lock_check(ndip);
1492 error = gfs2_inplace_reserve(ndip, &ap);
1496 error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(ndip, &da, 4) +
1497 4 * RES_LEAF + 4, 0);
1501 error = gfs2_trans_begin(sdp, 4 * RES_DINODE +
1502 5 * RES_LEAF + 4, 0);
1507 /* Remove the target file, if it exists */
1510 error = gfs2_unlink_inode(ndip, ndentry);
1513 error = gfs2_dir_mvino(ip, &gfs2_qdotdot, ndip, DT_DIR);
1517 struct buffer_head *dibh;
1518 error = gfs2_meta_inode_buffer(ip, &dibh);
1521 ip->i_inode.i_ctime = CURRENT_TIME;
1522 gfs2_trans_add_meta(ip->i_gl, dibh);
1523 gfs2_dinode_out(ip, dibh->b_data);
1527 error = gfs2_dir_del(odip, odentry);
1531 error = gfs2_dir_add(ndir, &ndentry->d_name, ip, &da);
1536 gfs2_trans_end(sdp);
1539 gfs2_inplace_release(ndip);
1542 gfs2_quota_unlock(ndip);
1544 gfs2_dir_no_add(&da);
1546 gfs2_glock_dq(ghs + x);
1547 gfs2_holder_uninit(ghs + x);
1551 gfs2_glock_dq_uninit(&r_gh);
1557 * gfs2_follow_link - Follow a symbolic link
1558 * @dentry: The dentry of the link
1559 * @nd: Data that we pass to vfs_follow_link()
1561 * This can handle symlinks of any size.
1563 * Returns: 0 on success or error code
1566 static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
1568 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
1569 struct gfs2_holder i_gh;
1570 struct buffer_head *dibh;
1575 gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh);
1576 error = gfs2_glock_nq(&i_gh);
1578 gfs2_holder_uninit(&i_gh);
1579 nd_set_link(nd, ERR_PTR(error));
1583 size = (unsigned int)i_size_read(&ip->i_inode);
1585 gfs2_consist_inode(ip);
1586 buf = ERR_PTR(-EIO);
1590 error = gfs2_meta_inode_buffer(ip, &dibh);
1592 buf = ERR_PTR(error);
1596 buf = kzalloc(size + 1, GFP_NOFS);
1598 buf = ERR_PTR(-ENOMEM);
1600 memcpy(buf, dibh->b_data + sizeof(struct gfs2_dinode), size);
1603 gfs2_glock_dq_uninit(&i_gh);
1604 nd_set_link(nd, buf);
1611 * @mask: The mask to be tested
1612 * @flags: Indicates whether this is an RCU path walk or not
1614 * This may be called from the VFS directly, or from within GFS2 with the
1615 * inode locked, so we look to see if the glock is already locked and only
1616 * lock the glock if its not already been done.
1621 int gfs2_permission(struct inode *inode, int mask)
1623 struct gfs2_inode *ip;
1624 struct gfs2_holder i_gh;
1625 struct gfs2_sbd *sdp = GFS2_SB(inode);
1628 int frozen_root = 0;
1632 if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) {
1633 if (unlikely(gfs2_glock_is_held_excl(sdp->sd_freeze_gl) &&
1634 inode == sdp->sd_root_dir->d_inode &&
1635 atomic_inc_not_zero(&sdp->sd_frozen_root)))
1638 if (mask & MAY_NOT_BLOCK)
1640 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh);
1647 if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode))
1650 error = generic_permission(inode, mask);
1652 gfs2_glock_dq_uninit(&i_gh);
1653 else if (frozen_root && atomic_dec_and_test(&sdp->sd_frozen_root))
1654 wake_up(&sdp->sd_frozen_root_wait);
1659 static int __gfs2_setattr_simple(struct inode *inode, struct iattr *attr)
1661 setattr_copy(inode, attr);
1662 mark_inode_dirty(inode);
1667 * gfs2_setattr_simple -
1674 int gfs2_setattr_simple(struct inode *inode, struct iattr *attr)
1678 if (current->journal_info)
1679 return __gfs2_setattr_simple(inode, attr);
1681 error = gfs2_trans_begin(GFS2_SB(inode), RES_DINODE, 0);
1685 error = __gfs2_setattr_simple(inode, attr);
1686 gfs2_trans_end(GFS2_SB(inode));
1690 static int setattr_chown(struct inode *inode, struct iattr *attr)
1692 struct gfs2_inode *ip = GFS2_I(inode);
1693 struct gfs2_sbd *sdp = GFS2_SB(inode);
1698 ouid = inode->i_uid;
1699 ogid = inode->i_gid;
1700 nuid = attr->ia_uid;
1701 ngid = attr->ia_gid;
1703 if (!(attr->ia_valid & ATTR_UID) || uid_eq(ouid, nuid))
1704 ouid = nuid = NO_UID_QUOTA_CHANGE;
1705 if (!(attr->ia_valid & ATTR_GID) || gid_eq(ogid, ngid))
1706 ogid = ngid = NO_GID_QUOTA_CHANGE;
1708 error = get_write_access(inode);
1712 error = gfs2_rs_alloc(ip);
1716 error = gfs2_rindex_update(sdp);
1720 error = gfs2_quota_lock(ip, nuid, ngid);
1724 if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) ||
1725 !gid_eq(ogid, NO_GID_QUOTA_CHANGE)) {
1726 error = gfs2_quota_check(ip, nuid, ngid);
1731 error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0);
1735 error = gfs2_setattr_simple(inode, attr);
1739 if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) ||
1740 !gid_eq(ogid, NO_GID_QUOTA_CHANGE)) {
1741 u64 blocks = gfs2_get_inode_blocks(&ip->i_inode);
1742 gfs2_quota_change(ip, -blocks, ouid, ogid);
1743 gfs2_quota_change(ip, blocks, nuid, ngid);
1747 gfs2_trans_end(sdp);
1749 gfs2_quota_unlock(ip);
1751 put_write_access(inode);
1756 * gfs2_setattr - Change attributes on an inode
1757 * @dentry: The dentry which is changing
1758 * @attr: The structure describing the change
1760 * The VFS layer wants to change one or more of an inodes attributes. Write
1761 * that change out to disk.
1766 static int gfs2_setattr(struct dentry *dentry, struct iattr *attr)
1768 struct inode *inode = dentry->d_inode;
1769 struct gfs2_inode *ip = GFS2_I(inode);
1770 struct gfs2_holder i_gh;
1773 error = gfs2_rs_alloc(ip);
1777 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
1782 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
1785 error = inode_change_ok(inode, attr);
1789 if (attr->ia_valid & ATTR_SIZE)
1790 error = gfs2_setattr_size(inode, attr->ia_size);
1791 else if (attr->ia_valid & (ATTR_UID | ATTR_GID))
1792 error = setattr_chown(inode, attr);
1794 error = gfs2_setattr_simple(inode, attr);
1795 if (!error && attr->ia_valid & ATTR_MODE)
1796 error = posix_acl_chmod(inode, inode->i_mode);
1801 mark_inode_dirty(inode);
1802 gfs2_glock_dq_uninit(&i_gh);
1807 * gfs2_getattr - Read out an inode's attributes
1808 * @mnt: The vfsmount the inode is being accessed from
1809 * @dentry: The dentry to stat
1810 * @stat: The inode's stats
1812 * This may be called from the VFS directly, or from within GFS2 with the
1813 * inode locked, so we look to see if the glock is already locked and only
1814 * lock the glock if its not already been done. Note that its the NFS
1815 * readdirplus operation which causes this to be called (from filldir)
1816 * with the glock already held.
1821 static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
1824 struct inode *inode = dentry->d_inode;
1825 struct gfs2_inode *ip = GFS2_I(inode);
1826 struct gfs2_holder gh;
1827 struct gfs2_sbd *sdp = GFS2_SB(inode);
1830 int frozen_root = 0;
1832 if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) {
1833 if (unlikely(gfs2_glock_is_held_excl(sdp->sd_freeze_gl) &&
1834 inode == sdp->sd_root_dir->d_inode &&
1835 atomic_inc_not_zero(&sdp->sd_frozen_root)))
1838 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
1845 generic_fillattr(inode, stat);
1847 gfs2_glock_dq_uninit(&gh);
1848 else if (frozen_root && atomic_dec_and_test(&sdp->sd_frozen_root))
1849 wake_up(&sdp->sd_frozen_root_wait);
1854 static int gfs2_setxattr(struct dentry *dentry, const char *name,
1855 const void *data, size_t size, int flags)
1857 struct inode *inode = dentry->d_inode;
1858 struct gfs2_inode *ip = GFS2_I(inode);
1859 struct gfs2_holder gh;
1862 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
1863 ret = gfs2_glock_nq(&gh);
1865 ret = gfs2_rs_alloc(ip);
1867 ret = generic_setxattr(dentry, name, data, size, flags);
1870 gfs2_holder_uninit(&gh);
1874 static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name,
1875 void *data, size_t size)
1877 struct inode *inode = dentry->d_inode;
1878 struct gfs2_inode *ip = GFS2_I(inode);
1879 struct gfs2_holder gh;
1882 /* For selinux during lookup */
1883 if (gfs2_glock_is_locked_by_me(ip->i_gl))
1884 return generic_getxattr(dentry, name, data, size);
1886 gfs2_holder_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
1887 ret = gfs2_glock_nq(&gh);
1889 ret = generic_getxattr(dentry, name, data, size);
1892 gfs2_holder_uninit(&gh);
1896 static int gfs2_removexattr(struct dentry *dentry, const char *name)
1898 struct inode *inode = dentry->d_inode;
1899 struct gfs2_inode *ip = GFS2_I(inode);
1900 struct gfs2_holder gh;
1903 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
1904 ret = gfs2_glock_nq(&gh);
1906 ret = gfs2_rs_alloc(ip);
1908 ret = generic_removexattr(dentry, name);
1911 gfs2_holder_uninit(&gh);
1915 static int gfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
1918 struct gfs2_inode *ip = GFS2_I(inode);
1919 struct gfs2_holder gh;
1922 ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC);
1926 mutex_lock(&inode->i_mutex);
1928 ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh);
1932 if (gfs2_is_stuffed(ip)) {
1933 u64 phys = ip->i_no_addr << inode->i_blkbits;
1934 u64 size = i_size_read(inode);
1935 u32 flags = FIEMAP_EXTENT_LAST|FIEMAP_EXTENT_NOT_ALIGNED|
1936 FIEMAP_EXTENT_DATA_INLINE;
1937 phys += sizeof(struct gfs2_dinode);
1939 if (start + len > size)
1942 ret = fiemap_fill_next_extent(fieinfo, start, phys,
1947 ret = __generic_block_fiemap(inode, fieinfo, start, len,
1951 gfs2_glock_dq_uninit(&gh);
1953 mutex_unlock(&inode->i_mutex);
1957 const struct inode_operations gfs2_file_iops = {
1958 .permission = gfs2_permission,
1959 .setattr = gfs2_setattr,
1960 .getattr = gfs2_getattr,
1961 .setxattr = gfs2_setxattr,
1962 .getxattr = gfs2_getxattr,
1963 .listxattr = gfs2_listxattr,
1964 .removexattr = gfs2_removexattr,
1965 .fiemap = gfs2_fiemap,
1966 .get_acl = gfs2_get_acl,
1967 .set_acl = gfs2_set_acl,
1970 const struct inode_operations gfs2_dir_iops = {
1971 .create = gfs2_create,
1972 .lookup = gfs2_lookup,
1974 .unlink = gfs2_unlink,
1975 .symlink = gfs2_symlink,
1976 .mkdir = gfs2_mkdir,
1977 .rmdir = gfs2_unlink,
1978 .mknod = gfs2_mknod,
1979 .rename = gfs2_rename,
1980 .permission = gfs2_permission,
1981 .setattr = gfs2_setattr,
1982 .getattr = gfs2_getattr,
1983 .setxattr = gfs2_setxattr,
1984 .getxattr = gfs2_getxattr,
1985 .listxattr = gfs2_listxattr,
1986 .removexattr = gfs2_removexattr,
1987 .fiemap = gfs2_fiemap,
1988 .get_acl = gfs2_get_acl,
1989 .set_acl = gfs2_set_acl,
1990 .atomic_open = gfs2_atomic_open,
1993 const struct inode_operations gfs2_symlink_iops = {
1994 .readlink = generic_readlink,
1995 .follow_link = gfs2_follow_link,
1996 .put_link = kfree_put_link,
1997 .permission = gfs2_permission,
1998 .setattr = gfs2_setattr,
1999 .getattr = gfs2_getattr,
2000 .setxattr = gfs2_setxattr,
2001 .getxattr = gfs2_getxattr,
2002 .listxattr = gfs2_listxattr,
2003 .removexattr = gfs2_removexattr,
2004 .fiemap = gfs2_fiemap,