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 7USE_NOHUP(NEWTOY(nohup, "<1^", TOYFLAG_USR|TOYFLAG_BIN|TOYFLAG_ARGFAIL(125))) 8 9config 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 22void 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