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
|
/*
* SPDX-FileCopyrightText: 2011 , Jonathan Nieder
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <config.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include "exitcodes.h"
#include "prototypes.h"
#include "shadowlog_internal.h"
int
run_command(const char *cmd, const char *argv[],
/*@null@*/const char *envp[], int *restrict status)
{
pid_t pid, wpid;
if (NULL == envp) {
envp = (const char **)environ;
}
(void) fflush (stdout);
(void) fflush (shadow_logfd);
pid = fork ();
if (0 == pid) {
(void) execve (cmd, (char * const *) argv,
(char * const *) envp);
if (ENOENT == errno) {
exit (E_CMD_NOTFOUND);
}
fprintf (shadow_logfd, "%s: cannot execute %s: %s\n",
shadow_progname, cmd, strerror (errno));
exit (E_CMD_NOEXEC);
} else if ((pid_t)-1 == pid) {
fprintf (shadow_logfd, "%s: cannot execute %s: %s\n",
shadow_progname, cmd, strerror (errno));
return -1;
}
do {
wpid = waitpid (pid, status, 0);
if ((pid_t)-1 == wpid && errno == ECHILD)
break;
} while ( ((pid_t)-1 == wpid && errno == EINTR)
|| ((pid_t)-1 != wpid && wpid != pid));
if ((pid_t)-1 == wpid) {
fprintf (shadow_logfd, "%s: waitpid (status: %d): %s\n",
shadow_progname, *status, strerror (errno));
return -1;
}
return 0;
}
|
