From 1418fa7b91ec7c4b2ff337541f057f7672f334d5 Mon Sep 17 00:00:00 2001 From: Rob Landley Date: Sun, 20 Nov 2011 21:13:47 -0600 Subject: Implement nohup. --- toys/nohup.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 toys/nohup.c diff --git a/toys/nohup.c b/toys/nohup.c new file mode 100644 index 00000000..ab59c1e2 --- /dev/null +++ b/toys/nohup.c @@ -0,0 +1,42 @@ +/* vi: set sw=4 ts=4: + * + * nohup.c - run commandline with SIGHUP blocked. + * + * Copyright 2011 Rob Landley + * + * See http://opengroup.org/onlinepubs/9699919799/utilities/nohup.html + +USE_NOHUP(NEWTOY(nohup, "<1", TOYFLAG_USR|TOYFLAG_BIN)) + +config NOHUP + bool "nohup" + default y + help + usage: nohup COMMAND [ARGS...] + + Run a command that survives the end of its terminal. + If stdin is a tty, redirect from /dev/null + If stdout is a tty, redirect to file "nohup.out" +*/ + +#include "toys.h" + +void nohup_main(void) +{ + signal(SIGHUP, SIG_IGN); + if (ttyname(1)) { + close(1); + if (-1 == open("nohup.out", O_CREAT|O_APPEND|O_WRONLY, + S_IRUSR|S_IWUSR )) + { + char *temp = getenv("HOME"); + temp = xmsprintf("%s/%s", temp ? temp : "", "nohup.out"); + xcreate(temp, O_CREAT|O_APPEND|O_WRONLY, S_IRUSR|S_IWUSR); + } + } + if (ttyname(0)) { + close(0); + open("/dev/null", O_RDONLY); + } + xexec(toys.optargs); +} -- cgit v1.2.3