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1 | /* |
2 | * symlink.c |
3 | * |
4 | * Copyright (C) 2002 by John Newbigin |
5 | * |
6 | * Please add a note about your changes to smbfs in the ChangeLog file. |
7 | */ |
8 | |
9 | #include <linux/kernel.h> |
10 | #include <linux/errno.h> |
11 | #include <linux/fcntl.h> |
12 | #include <linux/stat.h> |
13 | #include <linux/mm.h> |
14 | #include <linux/slab.h> |
15 | #include <linux/pagemap.h> |
16 | #include <linux/net.h> |
17 | #include <linux/namei.h> |
18 | #include <linux/slab.h> |
19 | |
20 | #include <asm/uaccess.h> |
21 | #include <asm/system.h> |
22 | |
23 | #include <linux/smbno.h> |
24 | #include <linux/smb_fs.h> |
25 | |
26 | #include "smb_debug.h" |
27 | #include "proto.h" |
28 | |
29 | int smb_symlink(struct inode *inode, struct dentry *dentry, const char *oldname) |
30 | { |
31 | DEBUG1("create symlink %s -> %s/%s\n", oldname, DENTRY_PATH(dentry)); |
32 | |
33 | return smb_proc_symlink(server_from_dentry(dentry), dentry, oldname); |
34 | } |
35 | |
36 | static void *smb_follow_link(struct dentry *dentry, struct nameidata *nd) |
37 | { |
38 | char *link = __getname(); |
39 | DEBUG1("followlink of %s/%s\n", DENTRY_PATH(dentry)); |
40 | |
41 | if (!link) { |
42 | link = ERR_PTR(-ENOMEM); |
43 | } else { |
44 | int len = smb_proc_read_link(server_from_dentry(dentry), |
45 | dentry, link, PATH_MAX - 1); |
46 | if (len < 0) { |
47 | __putname(link); |
48 | link = ERR_PTR(len); |
49 | } else { |
50 | link[len] = 0; |
51 | } |
52 | } |
53 | nd_set_link(nd, link); |
54 | return NULL; |
55 | } |
56 | |
57 | static void smb_put_link(struct dentry *dentry, struct nameidata *nd, void *p) |
58 | { |
59 | char *s = nd_get_link(nd); |
60 | if (!IS_ERR(s)) |
61 | __putname(s); |
62 | } |
63 | |
64 | const struct inode_operations smb_link_inode_operations = |
65 | { |
66 | .readlink = generic_readlink, |
67 | .follow_link = smb_follow_link, |
68 | .put_link = smb_put_link, |
69 | }; |
70 |
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