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