1 /*
2 * spawnvp function
3 *
4 * Copyright 2003 Dimitrie O. Paun
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <errno.h>
25 #include <signal.h>
26 #include <stdlib.h>
27 #ifdef HAVE_SYS_WAIT_H
28 #include <sys/wait.h>
29 #endif
30 #include <sys/stat.h>
31 #ifdef HAVE_UNISTD_H
32 # include <unistd.h>
33 #endif
34
35 #ifndef HAVE_SPAWNVP
36 int spawnvp(int mode, const char *cmdname, const char *const argv[])
37 {
38 #ifndef HAVE__SPAWNVP
39 int pid = 0, status, wret;
40 struct sigaction dfl_act, old_act;
41
42 if (mode == _P_OVERLAY)
43 {
44 execvp(cmdname, (char **)argv);
45 /* if we get here it failed */
46 #ifdef ENOTSUP
47 if (errno != ENOTSUP) /* exec fails on MacOS if the process has multiple threads */
48 #endif
49 return -1;
50 }
51
52 dfl_act.sa_handler = SIG_DFL;
53 dfl_act.sa_flags = 0;
54 sigemptyset( &dfl_act.sa_mask );
55
56 if (mode == _P_WAIT) sigaction( SIGCHLD, &dfl_act, &old_act );
57
58 pid = fork();
59 if (pid == 0)
60 {
61 sigaction( SIGPIPE, &dfl_act, NULL );
62 execvp(cmdname, (char **)argv);
63 _exit(1);
64 }
65
66 if (pid != -1 && mode == _P_OVERLAY) exit(0);
67
68 if (pid != -1 && mode == _P_WAIT)
69 {
70 while (pid != (wret = waitpid(pid, &status, 0)))
71 if (wret == -1 && errno != EINTR) break;
72
73 if (pid == wret && WIFEXITED(status)) pid = WEXITSTATUS(status);
74 else pid = 255; /* abnormal exit with an abort or an interrupt */
75 }
76
77 if (mode == _P_WAIT) sigaction( SIGCHLD, &old_act, NULL );
78 return pid;
79 #else /* HAVE__SPAWNVP */
80 return _spawnvp(mode, cmdname, argv);
81 #endif /* HAVE__SPAWNVP */
82 }
83 #endif /* HAVE_SPAWNVP */
84
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