1 /* nohup.c - run commandline with SIGHUP blocked.
2 *
3 * Copyright 2011 Rob Landley <rob@landley.net>
4 *
5 * See http://opengroup.org/onlinepubs/9699919799/utilities/nohup.html
6
7 USE_NOHUP(NEWTOY(nohup, "<1^", TOYFLAG_USR|TOYFLAG_BIN|TOYFLAG_ARGFAIL(125)))
8
9 config NOHUP
10 bool "nohup"
11 default y
12 help
13 usage: nohup COMMAND...
14
15 Run a command that survives the end of its terminal.
16
17 Redirect tty on stdin to /dev/null, tty on stdout to "nohup.out".
18 */
19
20 #include "toys.h"
21
nohup_main(void)22 void nohup_main(void)
23 {
24 toys.exitval = 125;
25 xsignal(SIGHUP, SIG_IGN);
26 if (isatty(1)) {
27 close(1);
28 if (-1 == open("nohup.out", O_CREAT|O_APPEND|O_WRONLY,
29 S_IRUSR|S_IWUSR ))
30 {
31 char *temp = getenv("HOME");
32
33 temp = xmprintf("%s/%s", temp ? temp : "", "nohup.out");
34 xcreate(temp, O_CREAT|O_APPEND|O_WRONLY, 0600);
35 free(temp);
36 }
37 }
38 if (isatty(0)) {
39 close(0);
40 xopen_stdio("/dev/null", O_RDONLY);
41 }
42 toys.exitval = 0;
43 xexec(toys.optargs);
44 }
45