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60de5df9 | 1 | /* |
ad787160 C |
2 | * Copyright (c) 1983, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
46e9ea25 | 4 | * |
3dd3a9e5 KB |
5 | * This code is derived from software contributed to Berkeley by |
6 | * Edward Wang at The University of California, Berkeley. | |
7 | * | |
c0567266 KB |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * 1. Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * 3. All advertising materials mentioning features or use of this software | |
17 | * must display the following acknowledgement: | |
18 | * This product includes software developed by the University of | |
19 | * California, Berkeley and its contributors. | |
20 | * 4. Neither the name of the University nor the names of its contributors | |
21 | * may be used to endorse or promote products derived from this software | |
22 | * without specific prior written permission. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
34 | * SUCH DAMAGE. | |
60de5df9 EW |
35 | */ |
36 | ||
46e9ea25 | 37 | #ifndef lint |
ad787160 | 38 | static char sccsid[] = "@(#)wwspawn.c 8.1 (Berkeley) 6/6/93"; |
46e9ea25 KB |
39 | #endif /* not lint */ |
40 | ||
2dd7d7a6 | 41 | #include "ww.h" |
7c38ad4d | 42 | #include <sys/signal.h> |
2dd7d7a6 | 43 | |
eec72f58 EW |
44 | /* |
45 | * There is a dead lock with vfork and closing of pseudo-ports. | |
7ecf4dca | 46 | * So we have to be sneaky about error reporting. |
eec72f58 | 47 | */ |
7ecf4dca | 48 | wwspawn(wp, file, argv) |
2dd7d7a6 | 49 | register struct ww *wp; |
7ecf4dca EW |
50 | char *file; |
51 | char **argv; | |
2dd7d7a6 | 52 | { |
ac62cc78 | 53 | int pid; |
7ecf4dca EW |
54 | int ret; |
55 | char erred = 0; | |
7c38ad4d | 56 | int s; |
ac62cc78 | 57 | |
7c38ad4d | 58 | s = sigblock(sigmask(SIGCHLD)); |
ac62cc78 | 59 | switch (pid = vfork()) { |
2dd7d7a6 | 60 | case -1: |
03e75950 | 61 | wwerrno = WWE_SYS; |
7ecf4dca EW |
62 | ret = -1; |
63 | break; | |
2dd7d7a6 | 64 | case 0: |
7ecf4dca EW |
65 | if (wwenviron(wp) >= 0) |
66 | execvp(file, argv); | |
67 | erred = 1; | |
eec72f58 | 68 | _exit(1); |
2dd7d7a6 | 69 | default: |
7ecf4dca | 70 | if (erred) { |
eec72f58 | 71 | wwerrno = WWE_SYS; |
7ecf4dca | 72 | ret = -1; |
eec72f58 EW |
73 | } else { |
74 | wp->ww_pid = pid; | |
75 | wp->ww_state = WWS_HASPROC; | |
7ecf4dca | 76 | ret = pid; |
eec72f58 | 77 | } |
2dd7d7a6 | 78 | } |
7c38ad4d | 79 | (void) sigsetmask(s); |
7ecf4dca EW |
80 | if (wp->ww_socket >= 0) { |
81 | (void) close(wp->ww_socket); | |
82 | wp->ww_socket = -1; | |
83 | } | |
7ecf4dca | 84 | return ret; |
2dd7d7a6 | 85 | } |