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870 lines
27 KiB
870 lines
27 KiB
From f5c88312c3fc5b7dc944eb36c2b8c62a44b78798 Mon Sep 17 00:00:00 2001 |
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From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl> |
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Date: Sun, 24 Jan 2021 21:19:51 +0100 |
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Subject: [PATCH 2/2] Remove bundled copy of sd-daemon.[ch] |
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|
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Let's just use the system version. |
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--- |
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Makefile.am | 10 +- |
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rtkit-daemon.c | 2 +- |
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sd-daemon.c | 520 ------------------------------------------------- |
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sd-daemon.h | 282 --------------------------- |
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4 files changed, 4 insertions(+), 810 deletions(-) |
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delete mode 100644 sd-daemon.c |
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delete mode 100644 sd-daemon.h |
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|
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diff --git a/Makefile.am b/Makefile.am |
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index febc35535d..2217a80b3c 100644 |
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--- a/Makefile.am |
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+++ b/Makefile.am |
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@@ -56,10 +56,10 @@ systemdsystemunit_DATA = \ |
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endif |
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rtkit_daemon_SOURCES = \ |
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- rtkit-daemon.c rtkit.h \ |
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- sd-daemon.c sd-daemon.h |
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+ rtkit-daemon.c rtkit.h |
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rtkit_daemon_LDADD = \ |
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- $(DBUS_LIBS) |
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+ $(DBUS_LIBS) \ |
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+ -lsystemd |
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rtkit_daemon_CFLAGS = \ |
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$(AM_CFLAGS) \ |
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$(DBUS_CFLAGS) |
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@@ -93,7 +93,3 @@ EXTRA_DIST += \ |
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|
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DISTCHECK_CONFIGURE_FLAGS = \ |
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--with-systemdsystemunitdir=$$dc_install_base/$(systemdsystemunitdir) |
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- |
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-update-systemd: |
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- curl http://cgit.freedesktop.org/systemd/systemd/plain/src/libsystemd-daemon/sd-daemon.c > sd-daemon.c |
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- curl http://cgit.freedesktop.org/systemd/systemd/plain/src/systemd/sd-daemon.h > sd-daemon.h |
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diff --git a/rtkit-daemon.c b/rtkit-daemon.c |
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index a15e84f8f5..fdff7f63dc 100644 |
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--- a/rtkit-daemon.c |
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+++ b/rtkit-daemon.c |
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@@ -50,9 +50,9 @@ |
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#include <dirent.h> |
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#include <syslog.h> |
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#include <grp.h> |
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+#include <systemd/sd-daemon.h> |
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|
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#include "rtkit.h" |
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-#include "sd-daemon.h" |
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|
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#ifndef __linux__ |
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#error "This stuff only works on Linux!" |
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diff --git a/sd-daemon.c b/sd-daemon.c |
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deleted file mode 100644 |
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index 485b301023..0000000000 |
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--- a/sd-daemon.c |
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+++ /dev/null |
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@@ -1,520 +0,0 @@ |
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-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
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- |
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-/*** |
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- Copyright 2010 Lennart Poettering |
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- |
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- Permission is hereby granted, free of charge, to any person |
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- obtaining a copy of this software and associated documentation files |
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- (the "Software"), to deal in the Software without restriction, |
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- including without limitation the rights to use, copy, modify, merge, |
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- publish, distribute, sublicense, and/or sell copies of the Software, |
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- and to permit persons to whom the Software is furnished to do so, |
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- subject to the following conditions: |
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- |
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- The above copyright notice and this permission notice shall be |
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- included in all copies or substantial portions of the Software. |
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- |
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- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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- NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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- BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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- ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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- CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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- SOFTWARE. |
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-***/ |
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- |
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-#ifndef _GNU_SOURCE |
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-# define _GNU_SOURCE |
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-#endif |
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- |
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-#include <sys/types.h> |
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-#include <sys/stat.h> |
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-#include <sys/socket.h> |
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-#include <sys/un.h> |
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-#include <fcntl.h> |
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-#include <netinet/in.h> |
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-#include <stdlib.h> |
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-#include <errno.h> |
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-#include <unistd.h> |
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-#include <string.h> |
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-#include <stdarg.h> |
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-#include <stdio.h> |
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-#include <stddef.h> |
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-#include <limits.h> |
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- |
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-#if defined(__linux__) && !defined(SD_DAEMON_DISABLE_MQ) |
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-# include <mqueue.h> |
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-#endif |
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- |
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-#include "sd-daemon.h" |
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- |
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-#if (__GNUC__ >= 4) |
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-# ifdef SD_EXPORT_SYMBOLS |
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-/* Export symbols */ |
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-# define _sd_export_ __attribute__ ((visibility("default"))) |
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-# else |
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-/* Don't export the symbols */ |
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-# define _sd_export_ __attribute__ ((visibility("hidden"))) |
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-# endif |
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-#else |
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-# define _sd_export_ |
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-#endif |
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- |
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-_sd_export_ int sd_listen_fds(int unset_environment) { |
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- |
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-#if defined(DISABLE_SYSTEMD) || !defined(__linux__) |
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- return 0; |
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-#else |
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- int r, fd; |
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- const char *e; |
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- char *p = NULL; |
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- unsigned long l; |
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- |
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- e = getenv("LISTEN_PID"); |
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- if (!e) { |
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- r = 0; |
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- goto finish; |
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- } |
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- |
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- errno = 0; |
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- l = strtoul(e, &p, 10); |
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- |
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- if (errno > 0) { |
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- r = -errno; |
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- goto finish; |
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- } |
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- |
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- if (!p || p == e || *p || l <= 0) { |
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- r = -EINVAL; |
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- goto finish; |
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- } |
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- |
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- /* Is this for us? */ |
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- if (getpid() != (pid_t) l) { |
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- r = 0; |
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- goto finish; |
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- } |
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- |
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- e = getenv("LISTEN_FDS"); |
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- if (!e) { |
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- r = 0; |
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- goto finish; |
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- } |
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- |
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- errno = 0; |
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- l = strtoul(e, &p, 10); |
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- |
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- if (errno > 0) { |
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- r = -errno; |
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- goto finish; |
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- } |
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- |
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- if (!p || p == e || *p) { |
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- r = -EINVAL; |
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- goto finish; |
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- } |
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- |
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- for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + (int) l; fd ++) { |
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- int flags; |
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- |
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- flags = fcntl(fd, F_GETFD); |
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- if (flags < 0) { |
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- r = -errno; |
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- goto finish; |
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- } |
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- |
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- if (flags & FD_CLOEXEC) |
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- continue; |
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- |
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- if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) < 0) { |
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- r = -errno; |
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- goto finish; |
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- } |
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- } |
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- |
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- r = (int) l; |
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- |
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-finish: |
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- if (unset_environment) { |
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- unsetenv("LISTEN_PID"); |
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- unsetenv("LISTEN_FDS"); |
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- } |
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- |
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- return r; |
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-#endif |
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-} |
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- |
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-_sd_export_ int sd_is_fifo(int fd, const char *path) { |
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- struct stat st_fd; |
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- |
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- if (fd < 0) |
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- return -EINVAL; |
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- |
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- if (fstat(fd, &st_fd) < 0) |
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- return -errno; |
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- |
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- if (!S_ISFIFO(st_fd.st_mode)) |
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- return 0; |
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- |
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- if (path) { |
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- struct stat st_path; |
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- |
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- if (stat(path, &st_path) < 0) { |
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- |
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- if (errno == ENOENT || errno == ENOTDIR) |
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- return 0; |
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- |
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- return -errno; |
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- } |
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- |
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- return |
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- st_path.st_dev == st_fd.st_dev && |
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- st_path.st_ino == st_fd.st_ino; |
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- } |
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- |
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- return 1; |
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-} |
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- |
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-_sd_export_ int sd_is_special(int fd, const char *path) { |
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- struct stat st_fd; |
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- |
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- if (fd < 0) |
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- return -EINVAL; |
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- |
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- if (fstat(fd, &st_fd) < 0) |
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- return -errno; |
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- |
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- if (!S_ISREG(st_fd.st_mode) && !S_ISCHR(st_fd.st_mode)) |
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- return 0; |
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- |
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- if (path) { |
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- struct stat st_path; |
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- |
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- if (stat(path, &st_path) < 0) { |
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- |
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- if (errno == ENOENT || errno == ENOTDIR) |
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- return 0; |
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- |
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- return -errno; |
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- } |
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- |
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- if (S_ISREG(st_fd.st_mode) && S_ISREG(st_path.st_mode)) |
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- return |
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- st_path.st_dev == st_fd.st_dev && |
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- st_path.st_ino == st_fd.st_ino; |
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- else if (S_ISCHR(st_fd.st_mode) && S_ISCHR(st_path.st_mode)) |
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- return st_path.st_rdev == st_fd.st_rdev; |
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- else |
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- return 0; |
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- } |
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- |
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- return 1; |
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-} |
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- |
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-static int sd_is_socket_internal(int fd, int type, int listening) { |
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- struct stat st_fd; |
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- |
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- if (fd < 0 || type < 0) |
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- return -EINVAL; |
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- |
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- if (fstat(fd, &st_fd) < 0) |
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- return -errno; |
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- |
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- if (!S_ISSOCK(st_fd.st_mode)) |
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- return 0; |
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- |
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- if (type != 0) { |
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- int other_type = 0; |
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- socklen_t l = sizeof(other_type); |
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- |
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- if (getsockopt(fd, SOL_SOCKET, SO_TYPE, &other_type, &l) < 0) |
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- return -errno; |
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- |
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- if (l != sizeof(other_type)) |
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- return -EINVAL; |
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- |
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- if (other_type != type) |
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- return 0; |
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- } |
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- |
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- if (listening >= 0) { |
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- int accepting = 0; |
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- socklen_t l = sizeof(accepting); |
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- |
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- if (getsockopt(fd, SOL_SOCKET, SO_ACCEPTCONN, &accepting, &l) < 0) |
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- return -errno; |
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- |
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- if (l != sizeof(accepting)) |
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- return -EINVAL; |
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- |
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- if (!accepting != !listening) |
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- return 0; |
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- } |
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- |
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- return 1; |
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-} |
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- |
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-union sockaddr_union { |
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- struct sockaddr sa; |
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- struct sockaddr_in in4; |
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- struct sockaddr_in6 in6; |
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- struct sockaddr_un un; |
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- struct sockaddr_storage storage; |
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-}; |
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- |
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-_sd_export_ int sd_is_socket(int fd, int family, int type, int listening) { |
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- int r; |
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- |
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- if (family < 0) |
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- return -EINVAL; |
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- |
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- r = sd_is_socket_internal(fd, type, listening); |
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- if (r <= 0) |
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- return r; |
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- |
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- if (family > 0) { |
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- union sockaddr_union sockaddr = {}; |
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- socklen_t l = sizeof(sockaddr); |
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- |
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- if (getsockname(fd, &sockaddr.sa, &l) < 0) |
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- return -errno; |
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- |
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- if (l < sizeof(sa_family_t)) |
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- return -EINVAL; |
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- |
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- return sockaddr.sa.sa_family == family; |
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- } |
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- |
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- return 1; |
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-} |
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- |
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-_sd_export_ int sd_is_socket_inet(int fd, int family, int type, int listening, uint16_t port) { |
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- union sockaddr_union sockaddr = {}; |
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- socklen_t l = sizeof(sockaddr); |
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- int r; |
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- |
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- if (family != 0 && family != AF_INET && family != AF_INET6) |
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- return -EINVAL; |
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- |
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- r = sd_is_socket_internal(fd, type, listening); |
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- if (r <= 0) |
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- return r; |
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- |
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- if (getsockname(fd, &sockaddr.sa, &l) < 0) |
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- return -errno; |
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- |
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- if (l < sizeof(sa_family_t)) |
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- return -EINVAL; |
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- |
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- if (sockaddr.sa.sa_family != AF_INET && |
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- sockaddr.sa.sa_family != AF_INET6) |
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- return 0; |
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- |
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- if (family > 0) |
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- if (sockaddr.sa.sa_family != family) |
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- return 0; |
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- |
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- if (port > 0) { |
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- if (sockaddr.sa.sa_family == AF_INET) { |
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- if (l < sizeof(struct sockaddr_in)) |
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- return -EINVAL; |
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- |
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- return htons(port) == sockaddr.in4.sin_port; |
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- } else { |
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- if (l < sizeof(struct sockaddr_in6)) |
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- return -EINVAL; |
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- |
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- return htons(port) == sockaddr.in6.sin6_port; |
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- } |
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- } |
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- |
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- return 1; |
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-} |
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- |
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-_sd_export_ int sd_is_socket_unix(int fd, int type, int listening, const char *path, size_t length) { |
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- union sockaddr_union sockaddr = {}; |
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- socklen_t l = sizeof(sockaddr); |
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- int r; |
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- |
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- r = sd_is_socket_internal(fd, type, listening); |
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- if (r <= 0) |
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- return r; |
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- |
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- if (getsockname(fd, &sockaddr.sa, &l) < 0) |
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- return -errno; |
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- |
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- if (l < sizeof(sa_family_t)) |
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- return -EINVAL; |
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- |
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- if (sockaddr.sa.sa_family != AF_UNIX) |
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- return 0; |
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- |
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- if (path) { |
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- if (length == 0) |
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- length = strlen(path); |
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- |
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- if (length == 0) |
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- /* Unnamed socket */ |
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- return l == offsetof(struct sockaddr_un, sun_path); |
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- |
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- if (path[0]) |
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- /* Normal path socket */ |
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- return |
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- (l >= offsetof(struct sockaddr_un, sun_path) + length + 1) && |
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- memcmp(path, sockaddr.un.sun_path, length+1) == 0; |
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- else |
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- /* Abstract namespace socket */ |
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- return |
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- (l == offsetof(struct sockaddr_un, sun_path) + length) && |
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- memcmp(path, sockaddr.un.sun_path, length) == 0; |
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- } |
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- |
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- return 1; |
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-} |
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- |
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-_sd_export_ int sd_is_mq(int fd, const char *path) { |
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-#if !defined(__linux__) || defined(SD_DAEMON_DISABLE_MQ) |
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- return 0; |
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-#else |
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- struct mq_attr attr; |
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- |
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- if (fd < 0) |
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- return -EINVAL; |
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- |
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- if (mq_getattr(fd, &attr) < 0) |
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- return -errno; |
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- |
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- if (path) { |
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- char fpath[PATH_MAX]; |
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- struct stat a, b; |
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- |
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- if (path[0] != '/') |
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- return -EINVAL; |
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- |
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- if (fstat(fd, &a) < 0) |
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- return -errno; |
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- |
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- strncpy(stpcpy(fpath, "/dev/mqueue"), path, sizeof(fpath) - 12); |
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- fpath[sizeof(fpath)-1] = 0; |
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- |
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- if (stat(fpath, &b) < 0) |
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- return -errno; |
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- |
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- if (a.st_dev != b.st_dev || |
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- a.st_ino != b.st_ino) |
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- return 0; |
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- } |
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- |
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- return 1; |
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-#endif |
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-} |
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- |
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-_sd_export_ int sd_notify(int unset_environment, const char *state) { |
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-#if defined(DISABLE_SYSTEMD) || !defined(__linux__) || !defined(SOCK_CLOEXEC) |
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- return 0; |
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-#else |
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- int fd = -1, r; |
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- struct msghdr msghdr; |
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- struct iovec iovec; |
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- union sockaddr_union sockaddr; |
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- const char *e; |
|
- |
|
- if (!state) { |
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- r = -EINVAL; |
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- goto finish; |
|
- } |
|
- |
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- e = getenv("NOTIFY_SOCKET"); |
|
- if (!e) |
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- return 0; |
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- |
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- /* Must be an abstract socket, or an absolute path */ |
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- if ((e[0] != '@' && e[0] != '/') || e[1] == 0) { |
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- r = -EINVAL; |
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- goto finish; |
|
- } |
|
- |
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- fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0); |
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- if (fd < 0) { |
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- r = -errno; |
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- goto finish; |
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- } |
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- |
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- memset(&sockaddr, 0, sizeof(sockaddr)); |
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- sockaddr.sa.sa_family = AF_UNIX; |
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- strncpy(sockaddr.un.sun_path, e, sizeof(sockaddr.un.sun_path)); |
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- |
|
- if (sockaddr.un.sun_path[0] == '@') |
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- sockaddr.un.sun_path[0] = 0; |
|
- |
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- memset(&iovec, 0, sizeof(iovec)); |
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- iovec.iov_base = (char*) state; |
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- iovec.iov_len = strlen(state); |
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- |
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- memset(&msghdr, 0, sizeof(msghdr)); |
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- msghdr.msg_name = &sockaddr; |
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- msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + strlen(e); |
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- |
|
- if (msghdr.msg_namelen > sizeof(struct sockaddr_un)) |
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- msghdr.msg_namelen = sizeof(struct sockaddr_un); |
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- |
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- msghdr.msg_iov = &iovec; |
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- msghdr.msg_iovlen = 1; |
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- |
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- if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) { |
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- r = -errno; |
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- goto finish; |
|
- } |
|
- |
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- r = 1; |
|
- |
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-finish: |
|
- if (unset_environment) |
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- unsetenv("NOTIFY_SOCKET"); |
|
- |
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- if (fd >= 0) |
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- close(fd); |
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- |
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- return r; |
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-#endif |
|
-} |
|
- |
|
-_sd_export_ int sd_notifyf(int unset_environment, const char *format, ...) { |
|
-#if defined(DISABLE_SYSTEMD) || !defined(__linux__) |
|
- return 0; |
|
-#else |
|
- va_list ap; |
|
- char *p = NULL; |
|
- int r; |
|
- |
|
- va_start(ap, format); |
|
- r = vasprintf(&p, format, ap); |
|
- va_end(ap); |
|
- |
|
- if (r < 0 || !p) |
|
- return -ENOMEM; |
|
- |
|
- r = sd_notify(unset_environment, p); |
|
- free(p); |
|
- |
|
- return r; |
|
-#endif |
|
-} |
|
- |
|
-_sd_export_ int sd_booted(void) { |
|
-#if defined(DISABLE_SYSTEMD) || !defined(__linux__) |
|
- return 0; |
|
-#else |
|
- struct stat st; |
|
- |
|
- /* We test whether the runtime unit file directory has been |
|
- * created. This takes place in mount-setup.c, so is |
|
- * guaranteed to happen very early during boot. */ |
|
- |
|
- if (lstat("/run/systemd/system/", &st) < 0) |
|
- return 0; |
|
- |
|
- return !!S_ISDIR(st.st_mode); |
|
-#endif |
|
-} |
|
diff --git a/sd-daemon.h b/sd-daemon.h |
|
deleted file mode 100644 |
|
index daa3f4c857..0000000000 |
|
--- a/sd-daemon.h |
|
+++ /dev/null |
|
@@ -1,282 +0,0 @@ |
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-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
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- |
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-#ifndef foosddaemonhfoo |
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-#define foosddaemonhfoo |
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- |
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-/*** |
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- Copyright 2010 Lennart Poettering |
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- |
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- Permission is hereby granted, free of charge, to any person |
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- obtaining a copy of this software and associated documentation files |
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- (the "Software"), to deal in the Software without restriction, |
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- including without limitation the rights to use, copy, modify, merge, |
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- publish, distribute, sublicense, and/or sell copies of the Software, |
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- and to permit persons to whom the Software is furnished to do so, |
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- subject to the following conditions: |
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- |
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- The above copyright notice and this permission notice shall be |
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- included in all copies or substantial portions of the Software. |
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- |
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- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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- NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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- BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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- ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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- CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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- SOFTWARE. |
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-***/ |
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- |
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-#include <sys/types.h> |
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-#include <inttypes.h> |
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- |
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-#ifdef __cplusplus |
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-extern "C" { |
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-#endif |
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- |
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-/* |
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- Reference implementation of a few systemd related interfaces for |
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- writing daemons. These interfaces are trivial to implement. To |
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- simplify porting we provide this reference implementation. |
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- Applications are welcome to reimplement the algorithms described |
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- here if they do not want to include these two source files. |
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- |
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- The following functionality is provided: |
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- |
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- - Support for logging with log levels on stderr |
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- - File descriptor passing for socket-based activation |
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- - Daemon startup and status notification |
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- - Detection of systemd boots |
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- |
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- You may compile this with -DDISABLE_SYSTEMD to disable systemd |
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- support. This makes all those calls NOPs that are directly related to |
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- systemd (i.e. only sd_is_xxx() will stay useful). |
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- |
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- Since this is drop-in code we don't want any of our symbols to be |
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- exported in any case. Hence we declare hidden visibility for all of |
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- them. |
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- |
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- You may find an up-to-date version of these source files online: |
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- |
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- http://cgit.freedesktop.org/systemd/systemd/plain/src/systemd/sd-daemon.h |
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- http://cgit.freedesktop.org/systemd/systemd/plain/src/libsystemd-daemon/sd-daemon.c |
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- |
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- This should compile on non-Linux systems, too, but with the |
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- exception of the sd_is_xxx() calls all functions will become NOPs. |
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- |
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- See sd-daemon(3) for more information. |
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-*/ |
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- |
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-#ifndef _sd_printf_attr_ |
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-# if __GNUC__ >= 4 |
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-# define _sd_printf_attr_(a,b) __attribute__ ((format (printf, a, b))) |
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-# else |
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-# define _sd_printf_attr_(a,b) |
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-# endif |
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-#endif |
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- |
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-/* |
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- Log levels for usage on stderr: |
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- |
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- fprintf(stderr, SD_NOTICE "Hello World!\n"); |
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- |
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- This is similar to printk() usage in the kernel. |
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-*/ |
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-#define SD_EMERG "<0>" /* system is unusable */ |
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-#define SD_ALERT "<1>" /* action must be taken immediately */ |
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-#define SD_CRIT "<2>" /* critical conditions */ |
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-#define SD_ERR "<3>" /* error conditions */ |
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-#define SD_WARNING "<4>" /* warning conditions */ |
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-#define SD_NOTICE "<5>" /* normal but significant condition */ |
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-#define SD_INFO "<6>" /* informational */ |
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-#define SD_DEBUG "<7>" /* debug-level messages */ |
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- |
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-/* The first passed file descriptor is fd 3 */ |
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-#define SD_LISTEN_FDS_START 3 |
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- |
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-/* |
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- Returns how many file descriptors have been passed, or a negative |
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- errno code on failure. Optionally, removes the $LISTEN_FDS and |
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- $LISTEN_PID file descriptors from the environment (recommended, but |
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- problematic in threaded environments). If r is the return value of |
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- this function you'll find the file descriptors passed as fds |
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- SD_LISTEN_FDS_START to SD_LISTEN_FDS_START+r-1. Returns a negative |
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- errno style error code on failure. This function call ensures that |
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- the FD_CLOEXEC flag is set for the passed file descriptors, to make |
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- sure they are not passed on to child processes. If FD_CLOEXEC shall |
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- not be set, the caller needs to unset it after this call for all file |
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- descriptors that are used. |
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- |
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- See sd_listen_fds(3) for more information. |
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-*/ |
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-int sd_listen_fds(int unset_environment); |
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- |
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-/* |
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- Helper call for identifying a passed file descriptor. Returns 1 if |
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- the file descriptor is a FIFO in the file system stored under the |
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- specified path, 0 otherwise. If path is NULL a path name check will |
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- not be done and the call only verifies if the file descriptor |
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- refers to a FIFO. Returns a negative errno style error code on |
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- failure. |
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- |
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- See sd_is_fifo(3) for more information. |
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-*/ |
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-int sd_is_fifo(int fd, const char *path); |
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- |
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-/* |
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- Helper call for identifying a passed file descriptor. Returns 1 if |
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- the file descriptor is a special character device on the file |
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- system stored under the specified path, 0 otherwise. |
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- If path is NULL a path name check will not be done and the call |
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- only verifies if the file descriptor refers to a special character. |
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- Returns a negative errno style error code on failure. |
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- |
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- See sd_is_special(3) for more information. |
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-*/ |
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-int sd_is_special(int fd, const char *path); |
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- |
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-/* |
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- Helper call for identifying a passed file descriptor. Returns 1 if |
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- the file descriptor is a socket of the specified family (AF_INET, |
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- ...) and type (SOCK_DGRAM, SOCK_STREAM, ...), 0 otherwise. If |
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- family is 0 a socket family check will not be done. If type is 0 a |
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- socket type check will not be done and the call only verifies if |
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- the file descriptor refers to a socket. If listening is > 0 it is |
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- verified that the socket is in listening mode. (i.e. listen() has |
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- been called) If listening is == 0 it is verified that the socket is |
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- not in listening mode. If listening is < 0 no listening mode check |
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- is done. Returns a negative errno style error code on failure. |
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- |
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- See sd_is_socket(3) for more information. |
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-*/ |
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-int sd_is_socket(int fd, int family, int type, int listening); |
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- |
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-/* |
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- Helper call for identifying a passed file descriptor. Returns 1 if |
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- the file descriptor is an Internet socket, of the specified family |
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- (either AF_INET or AF_INET6) and the specified type (SOCK_DGRAM, |
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- SOCK_STREAM, ...), 0 otherwise. If version is 0 a protocol version |
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- check is not done. If type is 0 a socket type check will not be |
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- done. If port is 0 a socket port check will not be done. The |
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- listening flag is used the same way as in sd_is_socket(). Returns a |
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- negative errno style error code on failure. |
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- |
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- See sd_is_socket_inet(3) for more information. |
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-*/ |
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-int sd_is_socket_inet(int fd, int family, int type, int listening, uint16_t port); |
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- |
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-/* |
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- Helper call for identifying a passed file descriptor. Returns 1 if |
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- the file descriptor is an AF_UNIX socket of the specified type |
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- (SOCK_DGRAM, SOCK_STREAM, ...) and path, 0 otherwise. If type is 0 |
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- a socket type check will not be done. If path is NULL a socket path |
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- check will not be done. For normal AF_UNIX sockets set length to |
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- 0. For abstract namespace sockets set length to the length of the |
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- socket name (including the initial 0 byte), and pass the full |
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- socket path in path (including the initial 0 byte). The listening |
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- flag is used the same way as in sd_is_socket(). Returns a negative |
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- errno style error code on failure. |
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- |
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- See sd_is_socket_unix(3) for more information. |
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-*/ |
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-int sd_is_socket_unix(int fd, int type, int listening, const char *path, size_t length); |
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- |
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-/* |
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- Helper call for identifying a passed file descriptor. Returns 1 if |
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- the file descriptor is a POSIX Message Queue of the specified name, |
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- 0 otherwise. If path is NULL a message queue name check is not |
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- done. Returns a negative errno style error code on failure. |
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-*/ |
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-int sd_is_mq(int fd, const char *path); |
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- |
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-/* |
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- Informs systemd about changed daemon state. This takes a number of |
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- newline separated environment-style variable assignments in a |
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- string. The following variables are known: |
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- |
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- READY=1 Tells systemd that daemon startup is finished (only |
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- relevant for services of Type=notify). The passed |
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- argument is a boolean "1" or "0". Since there is |
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- little value in signaling non-readiness the only |
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- value daemons should send is "READY=1". |
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- |
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- STATUS=... Passes a single-line status string back to systemd |
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- that describes the daemon state. This is free-from |
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- and can be used for various purposes: general state |
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- feedback, fsck-like programs could pass completion |
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- percentages and failing programs could pass a human |
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- readable error message. Example: "STATUS=Completed |
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- 66% of file system check..." |
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- |
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- ERRNO=... If a daemon fails, the errno-style error code, |
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- formatted as string. Example: "ERRNO=2" for ENOENT. |
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- |
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- BUSERROR=... If a daemon fails, the D-Bus error-style error |
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- code. Example: "BUSERROR=org.freedesktop.DBus.Error.TimedOut" |
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- |
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- MAINPID=... The main pid of a daemon, in case systemd did not |
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- fork off the process itself. Example: "MAINPID=4711" |
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- |
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- WATCHDOG=1 Tells systemd to update the watchdog timestamp. |
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- Services using this feature should do this in |
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- regular intervals. A watchdog framework can use the |
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- timestamps to detect failed services. |
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- |
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- Daemons can choose to send additional variables. However, it is |
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- recommended to prefix variable names not listed above with X_. |
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- |
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- Returns a negative errno-style error code on failure. Returns > 0 |
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- if systemd could be notified, 0 if it couldn't possibly because |
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- systemd is not running. |
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- |
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- Example: When a daemon finished starting up, it could issue this |
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- call to notify systemd about it: |
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- |
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- sd_notify(0, "READY=1"); |
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- |
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- See sd_notifyf() for more complete examples. |
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- |
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- See sd_notify(3) for more information. |
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-*/ |
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-int sd_notify(int unset_environment, const char *state); |
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- |
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-/* |
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- Similar to sd_notify() but takes a format string. |
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- |
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- Example 1: A daemon could send the following after initialization: |
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- |
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- sd_notifyf(0, "READY=1\n" |
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- "STATUS=Processing requests...\n" |
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- "MAINPID=%lu", |
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- (unsigned long) getpid()); |
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- |
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- Example 2: A daemon could send the following shortly before |
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- exiting, on failure: |
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- |
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- sd_notifyf(0, "STATUS=Failed to start up: %s\n" |
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- "ERRNO=%i", |
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- strerror(errno), |
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- errno); |
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- |
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- See sd_notifyf(3) for more information. |
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-*/ |
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-int sd_notifyf(int unset_environment, const char *format, ...) _sd_printf_attr_(2,3); |
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- |
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-/* |
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- Returns > 0 if the system was booted with systemd. Returns < 0 on |
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- error. Returns 0 if the system was not booted with systemd. Note |
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- that all of the functions above handle non-systemd boots just |
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- fine. You should NOT protect them with a call to this function. Also |
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- note that this function checks whether the system, not the user |
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- session is controlled by systemd. However the functions above work |
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- for both user and system services. |
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- |
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- See sd_booted(3) for more information. |
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-*/ |
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-int sd_booted(void); |
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- |
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-#ifdef __cplusplus |
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-} |
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-#endif |
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- |
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-#endif
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