diff options
| -rw-r--r-- | include/libbb.h | 6 | ||||
| -rw-r--r-- | libbb/systemd_support.c | 62 | ||||
| -rw-r--r-- | sysklogd/syslogd.c | 5 |
3 files changed, 73 insertions, 0 deletions
diff --git a/include/libbb.h b/include/libbb.h index 968bdcf..32e25a8 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -1217,6 +1217,12 @@ extern void selinux_preserve_fcontext(int fdesc) FAST_FUNC; #endif extern void selinux_or_die(void) FAST_FUNC; + +/* systemd support */ +#define SD_LISTEN_FDS_START 3 +int sd_listen_fds(void); + + /* setup_environment: * if chdir pw->pw_dir: ok: else if to_tmp == 1: goto /tmp else: goto / or die * if clear_env = 1: cd(pw->pw_dir), clear environment, then set diff --git a/libbb/systemd_support.c b/libbb/systemd_support.c new file mode 100644 index 0000000..981296d --- /dev/null +++ b/libbb/systemd_support.c @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2011 Davide Cavalca <davide@geexbox.org> + * + * Based on http://cgit.freedesktop.org/systemd/tree/src/sd-daemon.c + * Copyright 2010 Lennart Poettering + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include "libbb.h" + +//config:config FEATURE_SYSTEMD +//config: bool "Enable systemd support" +//config: default y +//config: help +//config: If you plan to use busybox daemons on a system where daemons +//config: are controlled by systemd, enable this option. +//config: If you don't use systemd, it is still safe to enable it, +//config: but yhe downside is increased code size. + +//kbuild:lib-$(CONFIG_FEATURE_SYSTEMD) += systemd_support.o + +int sd_listen_fds(void) +{ + const char *e; + int n; + int fd; + + e = getenv("LISTEN_PID"); + if (!e) + return 0; + n = xatoi_positive(e); + /* Is this for us? */ + if (getpid() != (pid_t) n) + return 0; + + e = getenv("LISTEN_FDS"); + if (!e) + return 0; + n = xatoi_positive(e); + for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) + close_on_exec_on(fd); + + return n; +} diff --git a/sysklogd/syslogd.c b/sysklogd/syslogd.c index fb73095..24cab3b 100644 --- a/sysklogd/syslogd.c +++ b/sysklogd/syslogd.c @@ -512,6 +512,11 @@ static NOINLINE int create_socket(void) int sock_fd; char *dev_log_name; +#if ENABLE_FEATURE_SYSTEMD + if (sd_listen_fds() == 1) + return SD_LISTEN_FDS_START; +#endif + memset(&sunx, 0, sizeof(sunx)); sunx.sun_family = AF_UNIX; |