blob: 19ca2d6776c315a66ce0e12c2bb23f76a4fae513 (
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
61
62
63
64
65
66
67
68
69
70
71
|
/*
* link() - POSIX 1003.1b - 5.3.4 - Create a new link
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <unistd.h>
#include <rtems/libio_.h>
int link( const char *path1, const char *path2 )
{
int rv = 0;
rtems_filesystem_eval_path_context_t ctx_1;
rtems_filesystem_eval_path_context_t ctx_2;
int eval_flags_1 = RTEMS_FS_FOLLOW_LINK;
int eval_flags_2 = RTEMS_FS_FOLLOW_LINK
| RTEMS_FS_MAKE
| RTEMS_FS_EXCLUSIVE;
const rtems_filesystem_location_info_t *currentloc_1 =
rtems_filesystem_eval_path_start( &ctx_1, path1, eval_flags_1 );
const rtems_filesystem_location_info_t *currentloc_2 =
rtems_filesystem_eval_path_start( &ctx_2, path2, eval_flags_2 );
rv = rtems_filesystem_location_exists_in_same_fs_instance_as(
currentloc_1,
currentloc_2
);
if ( rv == 0 ) {
rv = (*currentloc_2->ops->link_h)(
currentloc_2,
currentloc_1,
rtems_filesystem_eval_path_get_token( &ctx_2 ),
rtems_filesystem_eval_path_get_tokenlen( &ctx_2 )
);
}
rtems_filesystem_eval_path_cleanup( &ctx_1 );
rtems_filesystem_eval_path_cleanup( &ctx_2 );
return rv;
}
/*
* _link_r
*
* This is the Newlib dependent reentrant version of link().
*/
#if defined(RTEMS_NEWLIB)
#include <reent.h>
int _link_r(
struct _reent *ptr __attribute__((unused)),
const char *path1,
const char *path2
)
{
return link( path1, path2 );
}
#endif
|
