Fixes for syslog services in systemd
v2 cover Fixes for syslog services in systemd
The following changes since commit f6a39cc957bf85ff43513f0b76afc3b2c9c906b6:
sstatesig: fix overrides behaviour to remove SIGGEN_LOCKEDSIGS_i586 (2014-09-17 22:00:05 +0100)
are available in the git repository at:
git://git.openembedded.org/openembedded-core-contrib ChenQi/systemd-syslog-service
http://cgit.openembedded.org/cgit.cgi/openembedded-core-contrib/log/?h=ChenQi/systemd-syslog-service
Chen Qi (4):
systemd: enable syslog.socket by default
busybox: fix for syslog service in systemd
sysklogd: add systemd support
sysklog: comment out configuration regarding xconsole
meta/recipes-core/busybox/busybox.inc | 9 +- .../busybox/files/busybox-klogd.service.in | 4 +- .../busybox/files/busybox-syslog.service.in | 7 +- meta/recipes-core/systemd/systemd_216.bb | 2 + .../files/0001-syslogd.c-add-systemd-support.patch | 217 +++++++++++++++++++++ meta/recipes-extended/sysklogd/files/klogd.service | 9 + .../sysklogd/files/sysklogd.service | 14 ++ meta/recipes-extended/sysklogd/files/syslog.conf | 8 +- meta/recipes-extended/sysklogd/sysklogd.inc | 37 +++- 9 files changed, 289 insertions(+), 18 deletions(-) create mode 100644 meta/recipes-extended/sysklogd/files/0001-syslogd.c-add-systemd-support.patch create mode 100644 meta/recipes-extended/sysklogd/files/klogd.service create mode 100644 meta/recipes-extended/sysklogd/files/sysklogd.service
Signature · 1 line
1.9.1
PATCH v2 1/4 systemd: enable syslog.socket by default
The syslog daemon behaviour in our systemd system should be like the following
1. If ForwardToSyslog is disabled, no daemon should be started.
2. If ForwardToSyslog is enabled, daemon should be started via socket activation. This is very important for OE based system. Because unlike other distros, OE allows serveral syslog packages installed into one image, using ALTERNATIVE mechanism to manage them. If the syslog service is started regardless of socket activation, things crash. For example, if there's 'WantedBy=multi-user.target' in the '[Install]' section of busybox-syslog.service file, then this service would be started anyway, even if syslog.service doesn't point to it. In this case, /sbin/syslogd in busybox-syslog.service might be from other syslog packages like sysklogd or rsyslog.
This patch is series of patches to implement the above behaviour. The syslog.socket needs to be enabled by default so that other syslog service could correctly be activated via socket activation at runtime.
--- meta/recipes-core/systemd/systemd_216.bb | 2 ++ 1 file changed, 2 insertions(+)
meta/recipes-core/systemd/systemd_216.bb +2 -0
@@ -148,6 +148,8 @@ do_install() { # Enable journal to forward message to syslog daemon sed -i -e 's/.*ForwardToSyslog.*/ForwardToSyslog=yes/' ${D}${sysconfdir}/systemd/journald.conf + # Enable syslog.socket by default, this is specific to our system + ln -sf ../syslog.socket ${D}${systemd_unitdir}/system/sockets.target.wants/syslog.socket } do_install_ptest () {
Signature · 1 line
1.9.1
PATCH v2 2/4 busybox: fix for syslog service in systemd
In reply to Chen QiThis patch includes the following changes:
1. Explicitly set StandardOutput of the log daemon to null. This would avoid creating a feedback loop of the syslog service. See link below for more information.
http://www.freedesktop.org/wiki/Software/systemd/syslog/
2. Use ALTERNATIVE machanism to manage the syslog service file. This is because that other package may also provide a syslog implementation.
3. Make the syslog daemon socket activated only. Otherwise, things would crash if we install busybox-syslog and other syslog packages together in one image.
--- meta/recipes-core/busybox/busybox.inc | 9 +++++++-- meta/recipes-core/busybox/files/busybox-klogd.service.in | 4 +--- meta/recipes-core/busybox/files/busybox-syslog.service.in | 7 +++---- 3 files changed, 11 insertions(+), 9 deletions(-)
meta/recipes-core/busybox/busybox.inc +7 -2
@@ -274,13 +274,12 @@ do_install () { if ${@bb.utils.contains('DISTRO_FEATURES','systemd','true','false',d)}; then if grep -q "CONFIG_SYSLOGD=y" ${B}/.config; then install -d ${D}${systemd_unitdir}/system - sed 's,@base_sbindir@,${base_sbindir},g' < ${WORKDIR}/busybox-syslog.service.in \ + sed -e 's,@base_sbindir@,${base_sbindir},g' -e 's,@SYSCONFDIR@,${sysconfdir},g' < ${WORKDIR}/busybox-syslog.service.in \ > ${D}${systemd_unitdir}/system/busybox-syslog.service if [ -f ${WORKDIR}/busybox-syslog.default ] ; then install -d ${D}${sysconfdir}/default install -m 0644 ${WORKDIR}/busybox-syslog.default ${D}${sysconfdir}/default/busybox-syslog fi - ln -sf /dev/null ${D}${systemd_unitdir}/system/syslog.service fi if grep -q "CONFIG_KLOGD=y" ${B}/.config; then install -d ${D}${systemd_unitdir}/system
@@ -311,6 +310,12 @@ python () { d.appendVar('ALTERNATIVE_%s-syslog' % (pn), ' syslog-startup-conf') d.setVarFlag('ALTERNATIVE_LINK_NAME', 'syslog-startup-conf', '%s/syslog-startup.conf' % (d.getVar('sysconfdir', True))) d.setVarFlag('ALTERNATIVE_TARGET', 'syslog-startup-conf', '%s/syslog-startup.conf.%s' % (d.getVar('sysconfdir', True), d.getVar('BPN', True))) + + if bb.utils.contains('DISTRO_FEATURES', 'systemd', True, False, d): + pn = d.getVar('PN', True) + d.appendVar('ALTERNATIVE_%s-syslog' % (pn), ' syslog-service') + d.setVarFlag('ALTERNATIVE_LINK_NAME', 'syslog-service', '%s/systemd/system/syslog.service' % (d.getVar('sysconfdir', True))) + d.setVarFlag('ALTERNATIVE_TARGET', 'syslog-service', '%s/system/busybox-syslog.service' % (d.getVar('systemd_unitdir', True))) } python do_package_prepend () {
meta/recipes-core/busybox/files/busybox-klogd.service.in +1 -3
@@ -3,6 +3,4 @@ Description=Kernel Logging Service [Service] ExecStart=@base_sbindir@/klogd -n - -[Install] -WantedBy=multi-user.target +StandardOutput=null
meta/recipes-core/busybox/files/busybox-syslog.service.in +3 -4
@@ -1,13 +1,12 @@ [Unit] Description=System Logging Service Wants=busybox-klogd.service +Requires=syslog.socket [Service] -EnvironmentFile=-/etc/default/busybox-syslog +EnvironmentFile=-@SYSCONFDIR@/default/busybox-syslog ExecStart=@base_sbindir@/syslogd -n $OPTIONS -Sockets=syslog.socket +StandardOutput=null [Install] -WantedBy=multi-user.target Also=busybox-klogd.service -Alias=syslog.service
Signature · 1 line
1.9.1
PATCH v2 3/4 sysklogd: add systemd support
In reply to Chen QiThis patch includes the following changes:
1. Add socket activation support for sysklogd.
2. Add systemd service file.
3. Use ALTERNATIVE mechanism in OE to manage the syslog service.
4. Set ALTERNATIVE_PRIORITY to "100" regardless of whether 'systemd' is in DISTRO_FEATURE or not because sysklogd now has systemd support.
--- .../files/0001-syslogd.c-add-systemd-support.patch | 217 +++++++++++++++++++++ meta/recipes-extended/sysklogd/files/klogd.service | 9 + .../sysklogd/files/sysklogd.service | 14 ++ meta/recipes-extended/sysklogd/sysklogd.inc | 37 +++- 4 files changed, 272 insertions(+), 5 deletions(-) create mode 100644 meta/recipes-extended/sysklogd/files/0001-syslogd.c-add-systemd-support.patch create mode 100644 meta/recipes-extended/sysklogd/files/klogd.service create mode 100644 meta/recipes-extended/sysklogd/files/sysklogd.service
meta/recipes-extended/sysklogd/files/0001-syslogd.c-add-systemd-support.patch new file +217 -0
@@ -0,0 +1,217 @@ +Upstream-Status: Pending + +Subject: syslogd.c: add systemd support + +Signed-off-by: Chen Qi <[email protected]> +--- + syslogd.c | 147 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-------- + 1 file changed, 128 insertions(+), 19 deletions(-) + +diff --git a/syslogd.c b/syslogd.c +index acfd8f1..83b067e 100644 +--- a/syslogd.c ++++ b/syslogd.c +@@ -602,6 +602,9 @@ static char sccsid[] = "@(#)syslogd.c 5.27 (Berkeley) 10/10/88"; + #define _PATH_LOG "/dev/log" + #endif + ++/* systemd support */ ++#define SD_LISTEN_FDS_START 3 ++ + char *ConfFile = _PATH_LOGCONF; + char *PidFile = _PATH_LOGPID; + char ctty[] = _PATH_CONSOLE; +@@ -822,6 +825,8 @@ int decode(char *name, struct code *codetab); + static void dprintf(char *, ...); + static void allocate_log(void); + void sighup_handler(); ++/* systemd support */ ++int sd_listen_fds(void); + + #ifdef SYSLOG_UNIXAF + static int create_unix_socket(const char *path); +@@ -963,9 +968,37 @@ int main(argc, argv) + */ + exit(1); + } ++ ++ /* We keep stdout and stderr open in case we have to emit something */ ++ close(0); ++ i = 3; ++ ++ /* Trying to pass on LISTEN_PID with appropriate value */ ++ const char *e; ++ unsigned long l; ++ char buf[24] = { '\0' }; ++ int sd_fds; ++ ++ if ( (e = getenv("LISTEN_PID")) ) { ++ errno = 0; ++ l = strtoul(e, NULL, 10); ++ if (errno == 0) { ++ if (getppid() == (pid_t)l) { ++ snprintf(buf,sizeof(buf), "%d", (int)getpid()); ++ setenv("LISTEN_PID", buf, 1); ++ } ++ } ++ } ++ + signal (SIGTERM, SIG_DFL); + num_fds = getdtablesize(); +- for (i= 0; i < num_fds; i++) ++ ++ /* close all further fds except of the fds provided by systemd */ ++ sd_fds = sd_listen_fds(); ++ if (sd_fds > 0) { ++ i = SD_LISTEN_FDS_START + sd_fds; ++ } ++ for ( ; i < num_fds; i++) + (void) close(i); + untty(); + } +@@ -1248,28 +1281,36 @@ static int create_unix_socket(const char *path) + { + struct sockaddr_un sunx; + int fd; ++ int n; + char line[MAXLINE +1]; + +- if (path[0] == '\0') ++ n = sd_listen_fds(); ++ if (n > 1) { + return -1; +- +- (void) unlink(path); +- +- memset(&sunx, 0, sizeof(sunx)); +- sunx.sun_family = AF_UNIX; +- (void) strncpy(sunx.sun_path, path, sizeof(sunx.sun_path)); +- fd = socket(AF_UNIX, SOCK_DGRAM, 0); +- if (fd < 0 || bind(fd, (struct sockaddr *) &sunx, +- sizeof(sunx.sun_family)+strlen(sunx.sun_path)) < 0 || +- chmod(path, 0666) < 0) { +- (void) snprintf(line, sizeof(line), "cannot create %s", path); +- logerror(line); +- dprintf("cannot create %s (%d).\n", path, errno); +- close(fd); ++ } else if (n == 1) { ++ fd = SD_LISTEN_FDS_START + 0; ++ } else { ++ if (path[0] == '\0') ++ return -1; ++ ++ (void) unlink(path); ++ ++ memset(&sunx, 0, sizeof(sunx)); ++ sunx.sun_family = AF_UNIX; ++ (void) strncpy(sunx.sun_path, path, sizeof(sunx.sun_path)); ++ fd = socket(AF_UNIX, SOCK_DGRAM, 0); ++ if (fd < 0 || bind(fd, (struct sockaddr *) &sunx, ++ sizeof(sunx.sun_family)+strlen(sunx.sun_path)) < 0 || ++ chmod(path, 0666) < 0) { ++ (void) snprintf(line, sizeof(line), "cannot create %s", path); ++ logerror(line); ++ dprintf("cannot create %s (%d).\n", path, errno); ++ close(fd); + #ifndef SYSV +- die(0); ++ die(0); + #endif +- return -1; ++ return -1; ++ } + } + return fd; + } +@@ -1998,12 +2039,27 @@ void wallmsg(f, iov) + /* open the user login file */ + setutent(); + +- + /* + * Might as well fork instead of using nonblocking I/O + * and doing notty(). + */ + if (fork() == 0) { ++ /* Trying to pass on the LISTEN_PID with appropriate value */ ++ const char *e; ++ unsigned long l; ++ char buf[24] = { '\0' }; ++ ++ if ( (e = getenv("LISTEN_PID")) ) { ++ errno = 0; ++ l = strtoul(e, NULL, 10); ++ if (errno == 0) { ++ if (getppid() == (pid_t)l) { ++ snprintf(buf,sizeof(buf), "%d", (int)getpid()); ++ setenv("LISTEN_PID", buf, 1); ++ } ++ } ++ } ++ + (void) signal(SIGTERM, SIG_DFL); + (void) alarm(0); + #ifndef SYSV +@@ -2896,6 +2952,59 @@ void sighup_handler() + return; + } + ++int sd_listen_fds() { ++ int r, fd; ++ const char *e; ++ unsigned long l; ++ ++ e = getenv("LISTEN_PID"); ++ if (!e) { ++ return 0; ++ } ++ ++ errno = 0; ++ l = strtoul(e, NULL, 10); ++ ++ if (errno != 0) { ++ return -errno; ++ } ++ ++ if (getpid() != (pid_t)l) { ++ return 0; ++ } ++ ++ e = getenv("LISTEN_FDS"); ++ if (!e) { ++ return 0; ++ } ++ ++ errno = 0; ++ l = strtoul(e, NULL, 10); ++ ++ if (errno != 0) { ++ return -errno; ++ } ++ ++ for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + (int)l; fd++) { ++ int flags; ++ ++ flags = fcntl(fd, F_GETFD); ++ if (flags < 0) { ++ return -errno; ++ } ++ ++ if (flags & FD_CLOEXEC) ++ continue; ++ ++ if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) < 0) { ++ return -errno; ++ } ++ } ++ ++ r = (int)l; ++ ++ return r; ++} + /* + * Local variables: + * c-indent-level: 8 +-- +1.9.1 +
meta/recipes-extended/sysklogd/files/klogd.service new file +9 -0
@@ -0,0 +1,9 @@ +[Unit] +Description=sysklogd Kernel Logging Service + +[Service] +Type=forking +EnvironmentFile=-@SYSCONFDIR@/default/klogd +PIDFile=/var/run/klogd.pid +ExecStart=@BASE_SBINDIR@/klogd $KLOGD +StandardOutput=null
meta/recipes-extended/sysklogd/files/sysklogd.service new file +14 -0
@@ -0,0 +1,14 @@ +[Unit] +Description=System Logging Service +Wants=klogd.service +Requires=syslog.socket + +[Service] +Type=forking +EnvironmentFile=-@SYSCONFDIR@/default/sysklogd +PIDFile=/var/run/syslogd.pid +ExecStart=@BASE_SBINDIR@/syslogd $SYSLOGD +StandardOutput=null + +[Install] +Also=klogd.service
meta/recipes-extended/sysklogd/sysklogd.inc +32 -5
@@ -11,12 +11,15 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=8ca43cbc842c2336e835926c2166c28b \ file://klogd.c;beginline=2;endline=19;md5=7e87ed0ae6142de079bce738c10c899d \ " -inherit update-rc.d update-alternatives +inherit update-rc.d systemd update-alternatives SRC_URI = "http://www.infodrom.org/projects/sysklogd/download/sysklogd-${PV}.tar.gz \ file://no-strip-install.patch \ + file://0001-syslogd.c-add-systemd-support.patch \ file://sysklogd \ file://syslog.conf \ + file://sysklogd.service \ + file://klogd.service \ " SRC_URI_append_e500v2 = " file://no-vectorization.patch"
@@ -24,6 +27,8 @@ SRC_URI_append_e500v2 = " file://no-vectorization.patch" INITSCRIPT_NAME = "syslog" CONFFILES_${PN} = "${sysconfdir}/syslog.conf.${BPN}" +SYSTEMD_SERVICE_${PN} = "sysklogd.service" + CFLAGS_append = " -DSYSV" do_install () {
@@ -35,20 +40,42 @@ do_install () { install -d ${D}${sysconfdir} install -m 644 ${WORKDIR}/syslog.conf ${D}${sysconfdir}/syslog.conf install -d ${D}${sysconfdir}/init.d - install -m 755 ${WORKDIR}/sysklogd ${D}${sysconfdir}/init.d/syslog + install -m 755 ${WORKDIR}/sysklogd ${D}${sysconfdir}/init.d/syslog.${BPN} + + install -d ${D}${systemd_unitdir}/system + install -m 0644 ${WORKDIR}/sysklogd.service ${D}${systemd_unitdir}/system + install -m 0644 ${WORKDIR}/klogd.service ${D}${systemd_unitdir}/system + sed -i -e 's,@BASE_SBINDIR@,${base_sbindir},g' \ + -e 's,@SYSCONFDIR@,${sysconfdir},g' \ + ${D}${systemd_unitdir}/system/*.service } # sysklogd package has no internal systemd support, so we weigh busybox's # sysklogd utility over it in case of systemd -ALTERNATIVE_PRIORITY = "${@bb.utils.contains('DISTRO_FEATURES','systemd','10','100',d)}" +#ALTERNATIVE_PRIORITY = "${@bb.utils.contains('DISTRO_FEATURES','systemd','10','100',d)}" +ALTERNATIVE_PRIORITY = '100' -ALTERNATIVE_${PN} = "syslogd klogd syslog-init syslog-conf" +ALTERNATIVE_${PN} = "syslogd klogd syslog-conf" ALTERNATIVE_LINK_NAME[syslogd] = "${base_sbindir}/syslogd" ALTERNATIVE_LINK_NAME[klogd] = "${base_sbindir}/klogd" -ALTERNATIVE_LINK_NAME[syslog-init] = "${sysconfdir}/init.d/syslog" ALTERNATIVE_LINK_NAME[syslog-conf] = "${sysconfdir}/syslog.conf" +python () { + if bb.utils.contains('DISTRO_FEATURES', 'sysvinit', True, False, d): + pn = d.getVar('PN', True) + sysconfdir = d.getVar('sysconfdir', True) + d.appendVar('ALTERNATIVE_%s' % (pn), ' syslog-init') + d.setVarFlag('ALTERNATIVE_LINK_NAME', 'syslog-init', '%s/init.d/syslog' % (sysconfdir)) + d.setVarFlag('ALTERNATIVE_TARGET', 'syslog-init', '%s/init.d/syslog.%s' % (d.getVar('sysconfdir', True), d.getVar('BPN', True))) + + if bb.utils.contains('DISTRO_FEATURES', 'systemd', True, False, d): + pn = d.getVar('PN', True) + d.appendVar('ALTERNATIVE_%s' % (pn), ' syslog-service') + d.setVarFlag('ALTERNATIVE_LINK_NAME', 'syslog-service', '%s/systemd/system/syslog.service' % (d.getVar('sysconfdir', True))) + d.setVarFlag('ALTERNATIVE_TARGET', 'syslog-service', '%s/system/sysklogd.service' % (d.getVar('systemd_unitdir', True))) +} + pkg_prerm_${PN} () { if test "x$D" = "x"; then if test "$1" = "upgrade" -o "$1" = "remove"; then
Signature · 1 line
1.9.1
PATCH v2 4/4 sysklog: comment out configuration regarding xconsole
In reply to Chen QiI commented out these configurations for the following reasons:
We don't have xconsole utility in OE. These configurations are useless for us.
Besides, the /dev/xconsole device is created in the init script which means if these configuration are enabled, we need to add a script in sysklogd which creates /dev/xconsole and is invoked in ExecStartPre in the sysklogd's service file.
I think it's better that we just comment these lines out.
--- meta/recipes-extended/sysklogd/files/syslog.conf | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
meta/recipes-extended/sysklogd/files/syslog.conf +4 -4
@@ -64,8 +64,8 @@ mail,news.none -/var/log/messages # NOTE: adjust the list below, or you'll go crazy if you have a reasonably # busy site.. # -daemon.*;mail.*;\ -news.err;\ -*.=debug;*.=info;\ -*.=notice;*.=warn |/dev/xconsole +#daemon.*;mail.*;\ +#news.err;\ +#*.=debug;*.=info;\ +#*.=notice;*.=warn |/dev/xconsole
Signature · 1 line
1.9.1