mirror of https://gitee.com/openkylin/linux.git
71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
/*
|
|
* symlink.c
|
|
*
|
|
* Copyright (C) 2002 by John Newbigin
|
|
*
|
|
* Please add a note about your changes to smbfs in the ChangeLog file.
|
|
*/
|
|
|
|
#include <linux/sched.h>
|
|
#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/smp_lock.h>
|
|
#include <linux/net.h>
|
|
#include <linux/namei.h>
|
|
|
|
#include <asm/uaccess.h>
|
|
#include <asm/system.h>
|
|
|
|
#include <linux/smbno.h>
|
|
#include <linux/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 int 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 0;
|
|
}
|
|
|
|
static void smb_put_link(struct dentry *dentry, struct nameidata *nd)
|
|
{
|
|
char *s = nd_get_link(nd);
|
|
if (!IS_ERR(s))
|
|
putname(s);
|
|
}
|
|
|
|
struct inode_operations smb_link_inode_operations =
|
|
{
|
|
.readlink = generic_readlink,
|
|
.follow_link = smb_follow_link,
|
|
.put_link = smb_put_link,
|
|
};
|