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| author | Denys Vlasenko | 2017-08-08 14:09:23 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2017-08-08 14:09:23 +0200 |
| commit | ddd1ee44436c2ec7e0125ca128c9a148bea8a2c0 (patch) | |
| tree | 0f2e44e3cff4ac426b4be113c4bcb0cfe3acbebf /libbb/vfork_daemon_rexec.c | |
| parent | 8858a9864e1d56cfc121755d613d1292727d15f3 (diff) | |
| download | busybox-ddd1ee44436c2ec7e0125ca128c9a148bea8a2c0.zip busybox-ddd1ee44436c2ec7e0125ca128c9a148bea8a2c0.tar.gz | |
libbb: simplify NOFORK/NOEXEC defines, move set_task_comm to libbb
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libbb/vfork_daemon_rexec.c')
| -rw-r--r-- | libbb/vfork_daemon_rexec.c | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/libbb/vfork_daemon_rexec.c b/libbb/vfork_daemon_rexec.c index c96cd61..e55847f 100644 --- a/libbb/vfork_daemon_rexec.c +++ b/libbb/vfork_daemon_rexec.c @@ -14,14 +14,32 @@ * * Licensed under GPLv2 or later, see file LICENSE in this source tree. */ +#include <sys/prctl.h> +#ifndef PR_SET_NAME +#define PR_SET_NAME 15 +#endif +#ifndef PR_GET_NAME +#define PR_GET_NAME 16 +#endif + #include "busybox.h" /* uses applet tables */ #include "NUM_APPLETS.h" +#define NOFORK_SUPPORT ((NUM_APPLETS > 1) && (ENABLE_FEATURE_PREFER_APPLETS || ENABLE_FEATURE_SH_NOFORK)) +#define NOEXEC_SUPPORT ((NUM_APPLETS > 1) && (ENABLE_FEATURE_PREFER_APPLETS || ENABLE_FEATURE_SH_STANDALONE)) + +#if defined(__linux__) && (NUM_APPLETS > 1) +void FAST_FUNC set_task_comm(const char *comm) +{ + /* okay if too long (truncates) */ + prctl(PR_SET_NAME, (long)comm, 0, 0, 0); +} +#endif + /* - * NOFORK support + * NOFORK/NOEXEC support */ -#if ENABLE_FEATURE_PREFER_APPLETS \ - || ENABLE_FEATURE_SH_NOFORK +#if NOFORK_SUPPORT static jmp_buf die_jmp; static void jump(void) { @@ -109,12 +127,9 @@ int FAST_FUNC run_nofork_applet(int applet_no, char **argv) return rc & 0xff; /* don't confuse people with "exitcodes" >255 */ } -#endif /* FEATURE_PREFER_APPLETS || FEATURE_SH_NOFORK */ +#endif -/* - * NOEXEC support - */ -#if (NUM_APPLETS > 1) && (ENABLE_FEATURE_PREFER_APPLETS || ENABLE_FEATURE_SH_STANDALONE) +#if NOEXEC_SUPPORT void FAST_FUNC run_noexec_applet_and_exit(int a, const char *name, char **argv) { /* reset some state and run without execing */ @@ -212,7 +227,7 @@ int FAST_FUNC spawn_and_wait(char **argv) } # endif } -#endif /* FEATURE_PREFER_APPLETS */ +#endif rc = spawn(argv); return wait4pid(rc); } |