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
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/* Reentrant versions of execution 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
/* If NO_EXEC is defined, we don't need these functions. */
#if defined (REENTRANT_SYSCALLS_PROVIDED) || defined (NO_EXEC)
int _dummy_exec_syscalls = 1;
#else
/* We use the errno variable used by the system dependent layer. */
#undef errno
extern int errno;
/*
FUNCTION
<<_execve_r>>---Reentrant version of execve
INDEX
_execve_r
ANSI_SYNOPSIS
#include <reent.h>
int _execve_r(struct _reent *<[ptr]>, char *<[name]>,
char **<[argv]>, char **<[env]>);
TRAD_SYNOPSIS
#include <reent.h>
int _execve_r(<[ptr]>, <[name]>, <[argv]>, <[env]>)
struct _reent *<[ptr]>;
char *<[name]>;
char **<[argv]>;
char **<[env]>;
DESCRIPTION
This is a reentrant version of <<execve>>. It
takes a pointer to the global data block, which holds
<<errno>>.
*/
int
_execve_r (ptr, name, argv, env)
struct _reent *ptr;
char *name;
char **argv;
char **env;
{
int ret;
errno = 0;
if ((ret = _execve (name, argv, env)) == -1 && errno != 0)
ptr->_errno = errno;
return ret;
}
/*
FUNCTION
<<_fork_r>>---Reentrant version of fork
INDEX
_fork_r
ANSI_SYNOPSIS
#include <reent.h>
int _fork_r(struct _reent *<[ptr]>);
TRAD_SYNOPSIS
#include <reent.h>
int _fork_r(<[ptr]>)
struct _reent *<[ptr]>;
DESCRIPTION
This is a reentrant version of <<fork>>. It
takes a pointer to the global data block, which holds
<<errno>>.
*/
#ifndef NO_FORK
int
_fork_r (ptr)
struct _reent *ptr;
{
int ret;
errno = 0;
if ((ret = _fork ()) == -1 && errno != 0)
ptr->_errno = errno;
return ret;
}
#endif
/*
FUNCTION
<<_wait_r>>---Reentrant version of wait
INDEX
_wait_r
ANSI_SYNOPSIS
#include <reent.h>
int _wait_r(struct _reent *<[ptr]>, int *<[status]>);
TRAD_SYNOPSIS
#include <reent.h>
int _wait_r(<[ptr]>, <[status]>)
struct _reent *<[ptr]>;
int *<[status]>;
DESCRIPTION
This is a reentrant version of <<wait>>. It
takes a pointer to the global data block, which holds
<<errno>>.
*/
int
_wait_r (ptr, status)
struct _reent *ptr;
int *status;
{
int ret;
errno = 0;
if ((ret = _wait (status)) == -1 && errno != 0)
ptr->_errno = errno;
return ret;
}
#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
|
