blob: 1cee54d0bf34a3bc23bc0c31c75bee0a385fa463 (
plain) (
blame)
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
|
/*
* link() - POSIX 1003.1b - 5.3.4 - Create a new link
*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <rtems.h>
#include <rtems/libio.h>
#include <errno.h>
#include "libio_.h"
int link(
const char *existing,
const char *new
)
{
rtems_filesystem_location_info_t existing_loc;
rtems_filesystem_location_info_t parent_loc;
int i;
int result;
const char *name_start;
/*
* Get the node we are linking to.
*/
result = rtems_filesystem_evaluate_path( existing, 0, &existing_loc, TRUE );
if ( result != 0 )
return -1;
/*
* Get the parent of the node we are creating.
*/
rtems_filesystem_get_start_loc( new, &i, &parent_loc );
result = (*parent_loc.ops->evalformake)( &new[i], &parent_loc, &name_start );
if ( result != 0 )
set_errno_and_return_minus_one( result );
/*
* Check to see if the caller is trying to link across file system
* boundaries.
*/
if ( parent_loc.mt_entry != existing_loc.mt_entry )
set_errno_and_return_minus_one( EXDEV );
if ( !parent_loc.ops->link )
set_errno_and_return_minus_one( ENOTSUP );
return (*parent_loc.ops->link)( &existing_loc, &parent_loc, name_start );
}
|
