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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
/* Reentrant versions of file system calls. These implementations
just call the usual system calls. */
#include <reent.h>
#include <unistd.h>
#include <_syslist.h>
/* Some targets provides their own versions of these functions. Those
targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS. */
#ifdef _REENT_ONLY
#ifndef REENTRANT_SYSCALLS_PROVIDED
#define REENTRANT_SYSCALLS_PROVIDED
#endif
#endif
#ifdef REENTRANT_SYSCALLS_PROVIDED
int _dummy_link_syscalls = 1;
#else
/* We use the errno variable used by the system dependent layer. */
#undef errno
extern int errno;
/*
FUNCTION
<<_link_r>>---Reentrant version of link
INDEX
_link_r
ANSI_SYNOPSIS
#include <reent.h>
int _link_r(struct _reent *<[ptr]>,
const char *<[old]>, const char *<[new]>);
TRAD_SYNOPSIS
#include <reent.h>
int _link_r(<[ptr]>, <[old]>, <[new]>)
struct _reent *<[ptr]>;
char *<[old]>;
char *<[new]>;
DESCRIPTION
This is a reentrant version of <<link>>. It
takes a pointer to the global data block, which holds
<<errno>>.
*/
int
_link_r (ptr, old, new)
struct _reent *ptr;
_CONST char *old;
_CONST char *new;
{
int ret;
errno = 0;
if ((ret = _link (old, new)) == -1 && errno != 0)
ptr->_errno = errno;
return ret;
}
/*
FUNCTION
<<_unlink_r>>---Reentrant version of unlink
INDEX
_unlink_r
ANSI_SYNOPSIS
#include <reent.h>
int _unlink_r(struct _reent *<[ptr]>, const char *<[file]>);
TRAD_SYNOPSIS
#include <reent.h>
int _unlink_r(<[ptr]>, <[file]>)
struct _reent *<[ptr]>;
char *<[file]>;
DESCRIPTION
This is a reentrant version of <<unlink>>. It
takes a pointer to the global data block, which holds
<<errno>>.
*/
int
_unlink_r (ptr, file)
struct _reent *ptr;
_CONST char *file;
{
int ret;
errno = 0;
if ((ret = _unlink (file)) == -1 && errno != 0)
ptr->_errno = errno;
return ret;
}
#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
|
