fs/jfs/namei.c

49  * NAME:	jfs_create(dip, dentry, mode)
51  * FUNCTION:	create a regular file in the parent directory <dip>
54  * PARAMETER:	dip	- parent directory vnode
62 static int jfs_create(struct mnt_idmap *idmap, struct inode *dip,
74 	jfs_info("jfs_create: dip:0x%p name:%pd", dip, dentry);
76 	rc = dquot_initialize(dip);
92 	ip = ialloc(dip, mode);
98 	tid = txBegin(dip->i_sb, 0);
100 	mutex_lock_nested(&JFS_IP(dip)->commit_mutex, COMMIT_MUTEX_PARENT);
103 	rc = jfs_init_acl(tid, ip, dip);
107 	rc = jfs_init_security(tid, ip, dip, &dentry->d_name);
113 	if ((rc = dtSearch(dip, &dname, &ino, &btstack, JFS_CREATE))) {
124 	iplist[0] = dip;
137 	if ((rc = dtInsert(tid, dip, &dname, &ino, &btstack))) {
152 	inode_set_mtime_to_ts(dip, inode_set_ctime_current(dip));
154 	mark_inode_dirty(dip);
161 	mutex_unlock(&JFS_IP(dip)->commit_mutex);
181  * NAME:	jfs_mkdir(dip, dentry, mode)
183  * FUNCTION:	create a child directory in the parent directory <dip>
186  * PARAMETER:	dip	- parent directory vnode
195 static struct dentry *jfs_mkdir(struct mnt_idmap *idmap, struct inode *dip,
207 	jfs_info("jfs_mkdir: dip:0x%p name:%pd", dip, dentry);
209 	rc = dquot_initialize(dip);
225 	ip = ialloc(dip, S_IFDIR | mode);
231 	tid = txBegin(dip->i_sb, 0);
233 	mutex_lock_nested(&JFS_IP(dip)->commit_mutex, COMMIT_MUTEX_PARENT);
236 	rc = jfs_init_acl(tid, ip, dip);
240 	rc = jfs_init_security(tid, ip, dip, &dentry->d_name);
246 	if ((rc = dtSearch(dip, &dname, &ino, &btstack, JFS_CREATE))) {
257 	iplist[0] = dip;
263 	dtInitRoot(tid, ip, dip->i_ino);
270 	if ((rc = dtInsert(tid, dip, &dname, &ino, &btstack))) {
286 	inc_nlink(dip);		/* for '..' from child directory */
287 	inode_set_mtime_to_ts(dip, inode_set_ctime_current(dip));
288 	mark_inode_dirty(dip);
295 	mutex_unlock(&JFS_IP(dip)->commit_mutex);
315  * NAME:	jfs_rmdir(dip, dentry)
319  * PARAMETER:	dip	- parent inode
333 static int jfs_rmdir(struct inode *dip, struct dentry *dentry)
343 	jfs_info("jfs_rmdir: dip:0x%p name:%pd", dip, dentry);
346 	rc = dquot_initialize(dip);
363 	tid = txBegin(dip->i_sb, 0);
365 	mutex_lock_nested(&JFS_IP(dip)->commit_mutex, COMMIT_MUTEX_PARENT);
368 	iplist[0] = dip;
379 	if ((rc = dtDelete(tid, dip, &dname, &ino, JFS_REMOVE))) {
385 		mutex_unlock(&JFS_IP(dip)->commit_mutex);
393 	inode_set_mtime_to_ts(dip, inode_set_ctime_current(dip));
394 	inode_dec_link_count(dip);
422 	mutex_unlock(&JFS_IP(dip)->commit_mutex);
428 	if (test_cflag(COMMIT_Stale, dip)) {
429 		if (dip->i_size > 1)
430 			jfs_truncate_nolock(dip, 0);
432 		clear_cflag(COMMIT_Stale, dip);
444  * NAME:	jfs_unlink(dip, dentry)
449  * PARAMETER:	dip	- inode of parent directory
463 static int jfs_unlink(struct inode *dip, struct dentry *dentry)
475 	jfs_info("jfs_unlink: dip:0x%p name:%pd", dip, dentry);
478 	rc = dquot_initialize(dip);
490 	tid = txBegin(dip->i_sb, 0);
492 	mutex_lock_nested(&JFS_IP(dip)->commit_mutex, COMMIT_MUTEX_PARENT);
495 	iplist[0] = dip;
502 	if ((rc = dtDelete(tid, dip, &dname, &ino, JFS_REMOVE))) {
508 		mutex_unlock(&JFS_IP(dip)->commit_mutex);
515 	inode_set_mtime_to_ts(dip,
516 			      inode_set_ctime_to_ts(dip, inode_set_ctime_current(ip)));
517 	mark_inode_dirty(dip);
532 			mutex_unlock(&JFS_IP(dip)->commit_mutex);
561 	mutex_unlock(&JFS_IP(dip)->commit_mutex);
564 		tid = txBegin(dip->i_sb, 0);
585 	if (test_cflag(COMMIT_Stale, dip)) {
586 		if (dip->i_size > 1)
587 			jfs_truncate_nolock(dip, 0);
589 		clear_cflag(COMMIT_Stale, dip);
861  * NAME:	jfs_symlink(dip, dentry, name)
864  *			in directory <dip>
866  * PARAMETER:	dip	- parent directory vnode
878 static int jfs_symlink(struct mnt_idmap *idmap, struct inode *dip,
897 	jfs_info("jfs_symlink: dip:0x%p name:%s", dip, name);
899 	rc = dquot_initialize(dip);
917 	ip = ialloc(dip, S_IFLNK | 0777);
923 	tid = txBegin(dip->i_sb, 0);
925 	mutex_lock_nested(&JFS_IP(dip)->commit_mutex, COMMIT_MUTEX_PARENT);
928 	rc = jfs_init_security(tid, ip, dip, &dentry->d_name);
1017 	rc = dtSearch(dip, &dname, &ino, &btstack, JFS_CREATE);
1020 		rc = dtInsert(tid, dip, &dname, &ino, &btstack);
1032 	inode_set_mtime_to_ts(dip, inode_set_ctime_current(dip));
1033 	mark_inode_dirty(dip);
1038 	iplist[0] = dip;
1045 	mutex_unlock(&JFS_IP(dip)->commit_mutex);
1449 static struct dentry *jfs_lookup(struct inode *dip, struct dentry *dentry, unsigned int flags)
1461 	rc = dtSearch(dip, &key, &inum, &btstack, JFS_LOOKUP);
1469 		ip = jfs_iget(dip->i_sb, inum);