xref: /openbmc/linux/fs/ext4/symlink.c (revision df388556)
1 /*
2  *  linux/fs/ext4/symlink.c
3  *
4  * Only fast symlinks left here - the rest is done by generic code. AV, 1999
5  *
6  * Copyright (C) 1992, 1993, 1994, 1995
7  * Remy Card (card@masi.ibp.fr)
8  * Laboratoire MASI - Institut Blaise Pascal
9  * Universite Pierre et Marie Curie (Paris VI)
10  *
11  *  from
12  *
13  *  linux/fs/minix/symlink.c
14  *
15  *  Copyright (C) 1991, 1992  Linus Torvalds
16  *
17  *  ext4 symlink handling code
18  */
19 
20 #include <linux/fs.h>
21 #include <linux/jbd2.h>
22 #include <linux/namei.h>
23 #include "ext4.h"
24 #include "xattr.h"
25 
26 static void *ext4_follow_link(struct dentry *dentry, struct nameidata *nd)
27 {
28 	struct ext4_inode_info *ei = EXT4_I(dentry->d_inode);
29 	nd_set_link(nd, (char *) ei->i_data);
30 	return NULL;
31 }
32 
33 const struct inode_operations ext4_symlink_inode_operations = {
34 	.readlink	= generic_readlink,
35 	.follow_link	= page_follow_link_light,
36 	.put_link	= page_put_link,
37 #ifdef CONFIG_EXT4_FS_XATTR
38 	.setxattr	= generic_setxattr,
39 	.getxattr	= generic_getxattr,
40 	.listxattr	= ext4_listxattr,
41 	.removexattr	= generic_removexattr,
42 #endif
43 };
44 
45 const struct inode_operations ext4_fast_symlink_inode_operations = {
46 	.readlink	= generic_readlink,
47 	.follow_link	= ext4_follow_link,
48 #ifdef CONFIG_EXT4_FS_XATTR
49 	.setxattr	= generic_setxattr,
50 	.getxattr	= generic_getxattr,
51 	.listxattr	= ext4_listxattr,
52 	.removexattr	= generic_removexattr,
53 #endif
54 };
55