blob: f1716f8540997868eec38a48011b39b585febf6e (
plain)
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
|
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2010 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
#include <ast.h>
#if _lib_execve
NoN(execve)
#else
#include <sig.h>
#include <wait.h>
#include <error.h>
static pid_t childpid;
static void
execsig(int sig)
{
kill(childpid, sig);
signal(sig, execsig);
}
#if defined(__EXPORT__)
#define extern __EXPORT__
#endif
extern int
execve(const char* path, char* const argv[], char* const arge[])
{
int status;
if ((childpid = spawnve(path, argv, arge)) < 0)
return(-1);
for (status = 0; status < 64; status++)
signal(status, execsig);
while (waitpid(childpid, &status, 0) == -1)
if (errno != EINTR) return(-1);
if (WIFSIGNALED(status))
{
signal(WTERMSIG(status), SIG_DFL);
kill(getpid(), WTERMSIG(status));
pause();
}
else status = WEXITSTATUS(status);
exit(status);
}
#endif
|
