1 /* nohup.c - run commandline with SIGHUP blocked.
2 *
3 * Copyright 2011 Rob Landley <[email protected]>
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 xsignal(SIGHUP, SIG_IGN);
25 if (isatty(1)) {
26 close(1);
27 if (open("nohup.out", O_CREAT|O_APPEND|O_WRONLY, 0600) == -1) {
28 char *temp = getenv("HOME");
29
30 xcreate(temp ? temp = xmprintf("%s/nohup.out", temp) : "nohup.out",
31 O_CREAT|O_APPEND|O_WRONLY, 0600);
32 free(temp);
33 }
34 }
35 if (isatty(0)) {
36 close(0);
37 xopen_stdio("/dev/null", O_RDONLY);
38 }
39
40 xexec(toys.optargs);
41 }
42