diff options
| -rw-r--r-- | include/applets.h | 3 | ||||
| -rw-r--r-- | include/usage.h | 6 | ||||
| -rw-r--r-- | miscutils/Config.in | 6 | ||||
| -rw-r--r-- | miscutils/Makefile.in | 1 | ||||
| -rw-r--r-- | miscutils/setsid.c | 46 |
5 files changed, 62 insertions, 0 deletions
diff --git a/include/applets.h b/include/applets.h index d6aee5599..e2fe25167 100644 --- a/include/applets.h +++ b/include/applets.h @@ -558,6 +558,9 @@ #ifdef CONFIG_SETKEYCODES APPLET(setkeycodes, setkeycodes_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER) #endif +#ifdef CONFIG_SETSID + APPLET(setsid, setsid_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER) +#endif #if defined(CONFIG_FEATURE_SH_IS_ASH) && defined(CONFIG_ASH) APPLET_NOUSAGE("sh", ash_main, _BB_DIR_BIN, _BB_SUID_NEVER) #elif defined(CONFIG_FEATURE_SH_IS_HUSH) && defined(CONFIG_HUSH) diff --git a/include/usage.h b/include/usage.h index 5d7c36551..dc8058a20 100644 --- a/include/usage.h +++ b/include/usage.h @@ -2375,6 +2375,12 @@ #define setkeycodes_example_usage \ "$ setkeycodes e030 127\n" +#define setsid_trivial_usage \ + "program [arg ...]" +#define setsid_full_usage \ + "Runs any program in a new session by calling setsid() before\n" \ + "exec'ing the rest of its arguments. See setsid(2) for details." + #define lash_trivial_usage \ "[FILE]...\n" \ "or: sh -c command [args]..." diff --git a/miscutils/Config.in b/miscutils/Config.in index 69a330058..6c68cd08e 100644 --- a/miscutils/Config.in +++ b/miscutils/Config.in @@ -215,6 +215,12 @@ config CONFIG_STRINGS strings prints the printable character sequences for each file specified. +config CONFIG_SETSID + bool "setsid" + default n + help + setsid runs a program in a new session + config CONFIG_TIME bool "time" default n diff --git a/miscutils/Makefile.in b/miscutils/Makefile.in index d4c5ff76b..8c53104ed 100644 --- a/miscutils/Makefile.in +++ b/miscutils/Makefile.in @@ -36,6 +36,7 @@ MISCUTILS-$(CONFIG_LAST) += last.o MISCUTILS-$(CONFIG_MAKEDEVS) += makedevs.o MISCUTILS-$(CONFIG_MT) += mt.o MISCUTILS-$(CONFIG_RX) += rx.o +MISCUTILS-$(CONFIG_SETSID) += setsid.o MISCUTILS-$(CONFIG_STRINGS) += strings.o MISCUTILS-$(CONFIG_TIME) += time.o MISCUTILS-$(CONFIG_WATCHDOG) += watchdog.o diff --git a/miscutils/setsid.c b/miscutils/setsid.c new file mode 100644 index 000000000..7df35be3b --- /dev/null +++ b/miscutils/setsid.c @@ -0,0 +1,46 @@ +/* + * setsid.c -- execute a command in a new session + * Rick Sladkey <jrs@world.std.com> + * In the public domain. + * + * 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@pld.ORG.PL> + * - added Native Language Support + * + * 2001-01-18 John Fremlin <vii@penguinpowered.com> + * - fork in case we are process group leader + * + * 2004-11-12 Paul Fox + * - busyboxed + */ + +#include <stdio.h> +#include <unistd.h> +#include <stdlib.h> +#include "busybox.h" + +int +setsid_main(int argc, char *argv[]) { + + if (argc < 2) { + bb_show_usage(); + } + + if (getpgrp() == getpid()) { + switch(fork()){ + case -1: + bb_perror_msg_and_die("fork"); + case 0: + break; + default: /* parent */ + exit(0); + } + /* child falls through */ + } + + setsid(); /* no error possible */ + + execvp(argv[1], argv + 1); + + bb_perror_msg_and_die(argv[1]); + +} |