mirror of
https://github.com/sheumann/hush.git
synced 2024-06-28 14:29:51 +00:00
21e8e8da64
function old new delta BB_EXECVP_or_die - 47 +47 time_main 1042 1043 +1 chrt_main 371 364 -7 ionice_main 292 282 -10 setsid_main 69 56 -13 nohup_main 236 223 -13 cttyhack_main 266 253 -13 chroot_main 94 81 -13 chpst_main 746 733 -13 timeout_main 297 279 -18 taskset_main 541 522 -19 vfork_child 67 45 -22 parse 975 953 -22 lpd_main 770 748 -22 launch_helper 192 170 -22 tcpudpsvd_main 1810 1782 -28 nice_main 190 156 -34 env_main 242 206 -36 run_command 221 174 -47 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/17 up/down: 48/-352) Total: -304 bytes Signed-off-by: Pascal Bellard <pascal.bellard@ads-lu.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/* nohup - invoke a utility immune to hangups.
|
|
*
|
|
* Busybox version based on nohup specification at
|
|
* http://www.opengroup.org/onlinepubs/007904975/utilities/nohup.html
|
|
*
|
|
* Copyright 2006 Rob Landley <rob@landley.net>
|
|
* Copyright 2006 Bernhard Reutner-Fischer
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
|
*/
|
|
|
|
#include "libbb.h"
|
|
|
|
/* Compat info: nohup (GNU coreutils 6.8) does this:
|
|
# nohup true
|
|
nohup: ignoring input and appending output to `nohup.out'
|
|
# nohup true 1>/dev/null
|
|
nohup: ignoring input and redirecting stderr to stdout
|
|
# nohup true 2>zz
|
|
# cat zz
|
|
nohup: ignoring input and appending output to `nohup.out'
|
|
# nohup true 2>zz 1>/dev/null
|
|
# cat zz
|
|
nohup: ignoring input
|
|
# nohup true </dev/null 1>/dev/null
|
|
nohup: redirecting stderr to stdout
|
|
# nohup true </dev/null 2>zz 1>/dev/null
|
|
# cat zz
|
|
(nothing)
|
|
#
|
|
*/
|
|
|
|
int nohup_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int nohup_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
const char *nohupout;
|
|
char *home;
|
|
|
|
xfunc_error_retval = 127;
|
|
|
|
if (!argv[1]) {
|
|
bb_show_usage();
|
|
}
|
|
|
|
/* If stdin is a tty, detach from it. */
|
|
if (isatty(STDIN_FILENO)) {
|
|
/* bb_error_msg("ignoring input"); */
|
|
close(STDIN_FILENO);
|
|
xopen(bb_dev_null, O_RDONLY); /* will be fd 0 (STDIN_FILENO) */
|
|
}
|
|
|
|
nohupout = "nohup.out";
|
|
/* Redirect stdout to nohup.out, either in "." or in "$HOME". */
|
|
if (isatty(STDOUT_FILENO)) {
|
|
close(STDOUT_FILENO);
|
|
if (open(nohupout, O_CREAT|O_WRONLY|O_APPEND, S_IRUSR|S_IWUSR) < 0) {
|
|
home = getenv("HOME");
|
|
if (home) {
|
|
nohupout = concat_path_file(home, nohupout);
|
|
xopen3(nohupout, O_CREAT|O_WRONLY|O_APPEND, S_IRUSR|S_IWUSR);
|
|
} else {
|
|
xopen(bb_dev_null, O_RDONLY); /* will be fd 1 */
|
|
}
|
|
}
|
|
bb_error_msg("appending output to %s", nohupout);
|
|
}
|
|
|
|
/* If we have a tty on stderr, redirect to stdout. */
|
|
if (isatty(STDERR_FILENO)) {
|
|
/* if (stdout_wasnt_a_tty)
|
|
bb_error_msg("redirecting stderr to stdout"); */
|
|
dup2(STDOUT_FILENO, STDERR_FILENO);
|
|
}
|
|
|
|
signal(SIGHUP, SIG_IGN);
|
|
|
|
argv++;
|
|
BB_EXECVP_or_die(argv);
|
|
}
|