From bfc2de46d1cf4f765e5772f3a33884b3d335ee99 Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Thu, 19 Jul 2012 12:46:39 -0400 Subject: sysklogd: Support systemd socket-based activation Syslogd cannot open /dev/log directly but must receive syslog messages from systemd (http://www.freedesktop.org/wiki/Software/systemd/syslog). The patch adds support for that. --- pkgs/os-specific/linux/sysklogd/builder.sh | 13 - pkgs/os-specific/linux/sysklogd/default.nix | 17 +- pkgs/os-specific/linux/sysklogd/systemd.patch | 850 ++++++++++++++++++++++++++ 3 files changed, 866 insertions(+), 14 deletions(-) delete mode 100644 pkgs/os-specific/linux/sysklogd/builder.sh create mode 100644 pkgs/os-specific/linux/sysklogd/systemd.patch (limited to 'pkgs/os-specific/linux/sysklogd') diff --git a/pkgs/os-specific/linux/sysklogd/builder.sh b/pkgs/os-specific/linux/sysklogd/builder.sh deleted file mode 100644 index d466f075652..00000000000 --- a/pkgs/os-specific/linux/sysklogd/builder.sh +++ /dev/null @@ -1,13 +0,0 @@ -source $stdenv/setup - -prefix=$out -export prefix - -installFlags="BINDIR=$out/sbin MANDIR=$out/share/man INSTALL=install" -patchPhase="sed -e 's@-o \${MAN_USER} -g \${MAN_GROUP} -m \${MAN_PERMS} @@' -i Makefile" - -mkdir -p "$out/share/man/man8/" -mkdir -p "$out/share/man/man5/" -mkdir -p "$out/sbin" - -genericBuild diff --git a/pkgs/os-specific/linux/sysklogd/default.nix b/pkgs/os-specific/linux/sysklogd/default.nix index 2fe27add5bf..979bfa1d0bf 100644 --- a/pkgs/os-specific/linux/sysklogd/default.nix +++ b/pkgs/os-specific/linux/sysklogd/default.nix @@ -2,9 +2,24 @@ stdenv.mkDerivation { name = "sysklogd-1.5"; - builder = ./builder.sh; + src = fetchurl { url = http://www.infodrom.org/projects/sysklogd/download/sysklogd-1.5.tar.gz; sha256 = "0wxpkrznqwz4dy11k90s2sqszwp7d4mlc0ag8288wa193plvhsb1"; }; + + patches = [ ./systemd.patch ]; + + installFlags = "BINDIR=$(out)/sbin MANDIR=$(out)/share/man INSTALL=install"; + + preConfigure = + '' + sed -e 's@-o \''${MAN_USER} -g \''${MAN_GROUP} -m \''${MAN_PERMS} @@' -i Makefile + ''; + + preInstall = "mkdir -p $out/share/man/man5/ $out/share/man/man8/ $out/sbin"; + + meta = { + description = "A system logging daemon"; + }; } diff --git a/pkgs/os-specific/linux/sysklogd/systemd.patch b/pkgs/os-specific/linux/sysklogd/systemd.patch new file mode 100644 index 00000000000..ecdf2b57ebf --- /dev/null +++ b/pkgs/os-specific/linux/sysklogd/systemd.patch @@ -0,0 +1,850 @@ +Based on http://ftp.free.org/mirrors/rsync.frugalware.org/frugalware-testing/source/apps-extra/sysklogd/sysklogd-1.5-systemd.diff + +diff --git a/Makefile b/Makefile +index 9a114b8..aef1fd6 100644 +--- a/Makefile ++++ b/Makefile +@@ -20,7 +20,7 @@ + CC= gcc + #SKFLAGS= -g -DSYSV -Wall + #LDFLAGS= -g +-SKFLAGS= $(RPM_OPT_FLAGS) -O3 -DSYSV -fomit-frame-pointer -Wall -fno-strength-reduce ++SKFLAGS= $(RPM_OPT_FLAGS) -O3 -DSYSV -fomit-frame-pointer -Wall -fno-strength-reduce -I. + # -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE + # -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE + # $(shell getconf LFS_SKFLAGS) +@@ -79,8 +79,8 @@ test: syslog_tst ksym oops.ko tsyslogd + + install: install_man install_exec + +-syslogd: syslogd.o pidfile.o +- ${CC} ${LDFLAGS} -o syslogd syslogd.o pidfile.o ${LIBS} ++syslogd: syslogd.o pidfile.o sd-daemon.o ++ ${CC} ${LDFLAGS} -o syslogd syslogd.o pidfile.o sd-daemon.o ${LIBS} + + klogd: klogd.o syslog.o pidfile.o ksym.o ksym_mod.o + ${CC} ${LDFLAGS} -o klogd klogd.o syslog.o pidfile.o ksym.o \ +@@ -101,6 +101,9 @@ syslogd.o: syslogd.c version.h + syslog.o: syslog.c + ${CC} ${SKFLAGS} ${SYSLOG_FLAGS} -c syslog.c + ++sd-daemon.o: sd-daemon.c sd-daemon.h ++ ${CC} ${SKFLAGS} ${SYSLOG_FLAGS} -c sd-daemon.c ++ + klogd.o: klogd.c klogd.h version.h + ${CC} ${SKFLAGS} ${KLOGD_FLAGS} $(DEB) -c klogd.c + +diff --git a/sd-daemon.c b/sd-daemon.c +new file mode 100644 +index 0000000..6d1eebf +--- /dev/null ++++ b/sd-daemon.c +@@ -0,0 +1,436 @@ ++/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ ++ ++/*** ++ 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. ++***/ ++ ++#ifndef _GNU_SOURCE ++#define _GNU_SOURCE ++#endif ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#include "sd-daemon.h" ++ ++int sd_listen_fds(int unset_environment) { ++ ++#if defined(DISABLE_SYSTEMD) || !defined(__linux__) ++ return 0; ++#else ++ int r, fd; ++ const char *e; ++ char *p = NULL; ++ unsigned long l; ++ ++ if (!(e = getenv("LISTEN_PID"))) { ++ r = 0; ++ goto finish; ++ } ++ ++ errno = 0; ++ l = strtoul(e, &p, 10); ++ ++ if (errno != 0) { ++ r = -errno; ++ goto finish; ++ } ++ ++ if (!p || *p || l <= 0) { ++ r = -EINVAL; ++ goto finish; ++ } ++ ++ /* Is this for us? */ ++ if (getpid() != (pid_t) l) { ++ r = 0; ++ goto finish; ++ } ++ ++ if (!(e = getenv("LISTEN_FDS"))) { ++ r = 0; ++ goto finish; ++ } ++ ++ errno = 0; ++ l = strtoul(e, &p, 10); ++ ++ if (errno != 0) { ++ r = -errno; ++ goto finish; ++ } ++ ++ if (!p || *p) { ++ r = -EINVAL; ++ goto finish; ++ } ++ ++ for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + (int) l; fd ++) { ++ int flags; ++ ++ if ((flags = fcntl(fd, F_GETFD)) < 0) { ++ r = -errno; ++ goto finish; ++ } ++ ++ if (flags & FD_CLOEXEC) ++ continue; ++ ++ if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) < 0) { ++ r = -errno; ++ goto finish; ++ } ++ } ++ ++ r = (int) l; ++ ++finish: ++ if (unset_environment) { ++ unsetenv("LISTEN_PID"); ++ unsetenv("LISTEN_FDS"); ++ } ++ ++ return r; ++#endif ++} ++ ++int sd_is_fifo(int fd, const char *path) { ++ struct stat st_fd; ++ ++ if (fd < 0) ++ return -EINVAL; ++ ++ memset(&st_fd, 0, sizeof(st_fd)); ++ if (fstat(fd, &st_fd) < 0) ++ return -errno; ++ ++ if (!S_ISFIFO(st_fd.st_mode)) ++ return 0; ++ ++ if (path) { ++ struct stat st_path; ++ ++ memset(&st_path, 0, sizeof(st_path)); ++ if (stat(path, &st_path) < 0) { ++ ++ if (errno == ENOENT || errno == ENOTDIR) ++ return 0; ++ ++ return -errno; ++ } ++ ++ return ++ st_path.st_dev == st_fd.st_dev && ++ st_path.st_ino == st_fd.st_ino; ++ } ++ ++ return 1; ++} ++ ++static int sd_is_socket_internal(int fd, int type, int listening) { ++ struct stat st_fd; ++ ++ if (fd < 0 || type < 0) ++ return -EINVAL; ++ ++ if (fstat(fd, &st_fd) < 0) ++ return -errno; ++ ++ if (!S_ISSOCK(st_fd.st_mode)) ++ return 0; ++ ++ if (type != 0) { ++ int other_type = 0; ++ socklen_t l = sizeof(other_type); ++ ++ if (getsockopt(fd, SOL_SOCKET, SO_TYPE, &other_type, &l) < 0) ++ return -errno; ++ ++ if (l != sizeof(other_type)) ++ return -EINVAL; ++ ++ if (other_type != type) ++ return 0; ++ } ++ ++ if (listening >= 0) { ++ int accepting = 0; ++ socklen_t l = sizeof(accepting); ++ ++ if (getsockopt(fd, SOL_SOCKET, SO_ACCEPTCONN, &accepting, &l) < 0) ++ return -errno; ++ ++ if (l != sizeof(accepting)) ++ return -EINVAL; ++ ++ if (!accepting != !listening) ++ return 0; ++ } ++ ++ return 1; ++} ++ ++union sockaddr_union { ++ struct sockaddr sa; ++ struct sockaddr_in in4; ++ struct sockaddr_in6 in6; ++ struct sockaddr_un un; ++ struct sockaddr_storage storage; ++}; ++ ++int sd_is_socket(int fd, int family, int type, int listening) { ++ int r; ++ ++ if (family < 0) ++ return -EINVAL; ++ ++ if ((r = sd_is_socket_internal(fd, type, listening)) <= 0) ++ return r; ++ ++ if (family > 0) { ++ union sockaddr_union sockaddr; ++ socklen_t l; ++ ++ memset(&sockaddr, 0, sizeof(sockaddr)); ++ l = sizeof(sockaddr); ++ ++ if (getsockname(fd, &sockaddr.sa, &l) < 0) ++ return -errno; ++ ++ if (l < sizeof(sa_family_t)) ++ return -EINVAL; ++ ++ return sockaddr.sa.sa_family == family; ++ } ++ ++ return 1; ++} ++ ++int sd_is_socket_inet(int fd, int family, int type, int listening, uint16_t port) { ++ union sockaddr_union sockaddr; ++ socklen_t l; ++ int r; ++ ++ if (family != 0 && family != AF_INET && family != AF_INET6) ++ return -EINVAL; ++ ++ if ((r = sd_is_socket_internal(fd, type, listening)) <= 0) ++ return r; ++ ++ memset(&sockaddr, 0, sizeof(sockaddr)); ++ l = sizeof(sockaddr); ++ ++ if (getsockname(fd, &sockaddr.sa, &l) < 0) ++ return -errno; ++ ++ if (l < sizeof(sa_family_t)) ++ return -EINVAL; ++ ++ if (sockaddr.sa.sa_family != AF_INET && ++ sockaddr.sa.sa_family != AF_INET6) ++ return 0; ++ ++ if (family > 0) ++ if (sockaddr.sa.sa_family != family) ++ return 0; ++ ++ if (port > 0) { ++ if (sockaddr.sa.sa_family == AF_INET) { ++ if (l < sizeof(struct sockaddr_in)) ++ return -EINVAL; ++ ++ return htons(port) == sockaddr.in4.sin_port; ++ } else { ++ if (l < sizeof(struct sockaddr_in6)) ++ return -EINVAL; ++ ++ return htons(port) == sockaddr.in6.sin6_port; ++ } ++ } ++ ++ return 1; ++} ++ ++int sd_is_socket_unix(int fd, int type, int listening, const char *path, size_t length) { ++ union sockaddr_union sockaddr; ++ socklen_t l; ++ int r; ++ ++ if ((r = sd_is_socket_internal(fd, type, listening)) <= 0) ++ return r; ++ ++ memset(&sockaddr, 0, sizeof(sockaddr)); ++ l = sizeof(sockaddr); ++ ++ if (getsockname(fd, &sockaddr.sa, &l) < 0) ++ return -errno; ++ ++ if (l < sizeof(sa_family_t)) ++ return -EINVAL; ++ ++ if (sockaddr.sa.sa_family != AF_UNIX) ++ return 0; ++ ++ if (path) { ++ if (length <= 0) ++ length = strlen(path); ++ ++ if (length <= 0) ++ /* Unnamed socket */ ++ return l == offsetof(struct sockaddr_un, sun_path); ++ ++ if (path[0]) ++ /* Normal path socket */ ++ return ++ (l >= offsetof(struct sockaddr_un, sun_path) + length + 1) && ++ memcmp(path, sockaddr.un.sun_path, length+1) == 0; ++ else ++ /* Abstract namespace socket */ ++ return ++ (l == offsetof(struct sockaddr_un, sun_path) + length) && ++ memcmp(path, sockaddr.un.sun_path, length) == 0; ++ } ++ ++ return 1; ++} ++ ++int sd_notify(int unset_environment, const char *state) { ++#if defined(DISABLE_SYSTEMD) || !defined(__linux__) || !defined(SOCK_CLOEXEC) ++ return 0; ++#else ++ int fd = -1, r; ++ struct msghdr msghdr; ++ struct iovec iovec; ++ union sockaddr_union sockaddr; ++ const char *e; ++ ++ if (!state) { ++ r = -EINVAL; ++ goto finish; ++ } ++ ++ if (!(e = getenv("NOTIFY_SOCKET"))) ++ return 0; ++ ++ /* Must be an abstract socket, or an absolute path */ ++ if ((e[0] != '@' && e[0] != '/') || e[1] == 0) { ++ r = -EINVAL; ++ goto finish; ++ } ++ ++ if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0) { ++ r = -errno; ++ goto finish; ++ } ++ ++ memset(&sockaddr, 0, sizeof(sockaddr)); ++ sockaddr.sa.sa_family = AF_UNIX; ++ strncpy(sockaddr.un.sun_path, e, sizeof(sockaddr.un.sun_path)); ++ ++ if (sockaddr.un.sun_path[0] == '@') ++ sockaddr.un.sun_path[0] = 0; ++ ++ memset(&iovec, 0, sizeof(iovec)); ++ iovec.iov_base = (char*) state; ++ iovec.iov_len = strlen(state); ++ ++ memset(&msghdr, 0, sizeof(msghdr)); ++ msghdr.msg_name = &sockaddr; ++ msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + strlen(e); ++ ++ if (msghdr.msg_namelen > sizeof(struct sockaddr_un)) ++ msghdr.msg_namelen = sizeof(struct sockaddr_un); ++ ++ msghdr.msg_iov = &iovec; ++ msghdr.msg_iovlen = 1; ++ ++ if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) { ++ r = -errno; ++ goto finish; ++ } ++ ++ r = 1; ++ ++finish: ++ if (unset_environment) ++ unsetenv("NOTIFY_SOCKET"); ++ ++ if (fd >= 0) ++ close(fd); ++ ++ return r; ++#endif ++} ++ ++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 ++} ++ ++int sd_booted(void) { ++#if defined(DISABLE_SYSTEMD) || !defined(__linux__) ++ return 0; ++#else ++ ++ struct stat a, b; ++ ++ /* We simply test whether the systemd cgroup hierarchy is ++ * mounted */ ++ ++ if (lstat("/sys/fs/cgroup", &a) < 0) ++ return 0; ++ ++ if (lstat("/sys/fs/cgroup/systemd", &b) < 0) ++ return 0; ++ ++ return a.st_dev != b.st_dev; ++#endif ++} +diff --git a/sd-daemon.h b/sd-daemon.h +new file mode 100644 +index 0000000..d0a0a94 +--- /dev/null ++++ b/sd-daemon.h +@@ -0,0 +1,265 @@ ++/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ ++ ++#ifndef foosddaemonhfoo ++#define foosddaemonhfoo ++ ++/*** ++ 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 ++#include ++ ++#ifdef __cplusplus ++extern "C" { ++#endif ++ ++/* ++ Reference implementation of a few systemd related interfaces for ++ writing daemons. These interfaces are trivial to implement. To ++ simplify porting we provide this reference implementation. ++ Applications are welcome to reimplement the algorithms described ++ here if they do not want to include these two source files. ++ ++ The following functionality is provided: ++ ++ - Support for logging with log levels on stderr ++ - File descriptor passing for socket-based activation ++ - Daemon startup and status notification ++ - Detection of systemd boots ++ ++ You may compile this with -DDISABLE_SYSTEMD to disable systemd ++ support. This makes all those calls NOPs that are directly related to ++ systemd (i.e. only sd_is_xxx() will stay useful). ++ ++ Since this is drop-in code we don't want any of our symbols to be ++ exported in any case. Hence we declare hidden visibility for all of ++ them. ++ ++ You may find an up-to-date version of these source files online: ++ ++ http://cgit.freedesktop.org/systemd/plain/src/sd-daemon.h ++ http://cgit.freedesktop.org/systemd/plain/src/sd-daemon.c ++ ++ This should compile on non-Linux systems, too, but with the ++ exception of the sd_is_xxx() calls all functions will become NOPs. ++ ++ See sd-daemon(7) for more information. ++*/ ++ ++#ifndef _sd_printf_attr_ ++#if __GNUC__ >= 4 ++#define _sd_printf_attr_(a,b) __attribute__ ((format (printf, a, b))) ++#else ++#define _sd_printf_attr_(a,b) ++#endif ++#endif ++ ++#ifndef _sd_hidden_ ++#if (__GNUC__ >= 4) && !defined(SD_EXPORT_SYMBOLS) ++#define _sd_hidden_ __attribute__ ((visibility("hidden"))) ++#else ++#define _sd_hidden_ ++#endif ++#endif ++ ++/* ++ Log levels for usage on stderr: ++ ++ fprintf(stderr, SD_NOTICE "Hello World!\n"); ++ ++ This is similar to printk() usage in the kernel. ++*/ ++#define SD_EMERG "<0>" /* system is unusable */ ++#define SD_ALERT "<1>" /* action must be taken immediately */ ++#define SD_CRIT "<2>" /* critical conditions */ ++#define SD_ERR "<3>" /* error conditions */ ++#define SD_WARNING "<4>" /* warning conditions */ ++#define SD_NOTICE "<5>" /* normal but significant condition */ ++#define SD_INFO "<6>" /* informational */ ++#define SD_DEBUG "<7>" /* debug-level messages */ ++ ++/* The first passed file descriptor is fd 3 */ ++#define SD_LISTEN_FDS_START 3 ++ ++/* ++ Returns how many file descriptors have been passed, or a negative ++ errno code on failure. Optionally, removes the $LISTEN_FDS and ++ $LISTEN_PID file descriptors from the environment (recommended, but ++ problematic in threaded environments). If r is the return value of ++ this function you'll find the file descriptors passed as fds ++ SD_LISTEN_FDS_START to SD_LISTEN_FDS_START+r-1. Returns a negative ++ errno style error code on failure. This function call ensures that ++ the FD_CLOEXEC flag is set for the passed file descriptors, to make ++ sure they are not passed on to child processes. If FD_CLOEXEC shall ++ not be set, the caller needs to unset it after this call for all file ++ descriptors that are used. ++ ++ See sd_listen_fds(3) for more information. ++*/ ++int sd_listen_fds(int unset_environment) _sd_hidden_; ++ ++/* ++ Helper call for identifying a passed file descriptor. Returns 1 if ++ the file descriptor is a FIFO in the file system stored under the ++ specified path, 0 otherwise. If path is NULL a path name check will ++ not be done and the call only verifies if the file descriptor ++ refers to a FIFO. Returns a negative errno style error code on ++ failure. ++ ++ See sd_is_fifo(3) for more information. ++*/ ++int sd_is_fifo(int fd, const char *path) _sd_hidden_; ++ ++/* ++ Helper call for identifying a passed file descriptor. Returns 1 if ++ the file descriptor is a socket of the specified family (AF_INET, ++ ...) and type (SOCK_DGRAM, SOCK_STREAM, ...), 0 otherwise. If ++ family is 0 a socket family check will not be done. If type is 0 a ++ socket type check will not be done and the call only verifies if ++ the file descriptor refers to a socket. If listening is > 0 it is ++ verified that the socket is in listening mode. (i.e. listen() has ++ been called) If listening is == 0 it is verified that the socket is ++ not in listening mode. If listening is < 0 no listening mode check ++ is done. Returns a negative errno style error code on failure. ++ ++ See sd_is_socket(3) for more information. ++*/ ++int sd_is_socket(int fd, int family, int type, int listening) _sd_hidden_; ++ ++/* ++ Helper call for identifying a passed file descriptor. Returns 1 if ++ the file descriptor is an Internet socket, of the specified family ++ (either AF_INET or AF_INET6) and the specified type (SOCK_DGRAM, ++ SOCK_STREAM, ...), 0 otherwise. If version is 0 a protocol version ++ check is not done. If type is 0 a socket type check will not be ++ done. If port is 0 a socket port check will not be done. The ++ listening flag is used the same way as in sd_is_socket(). Returns a ++ negative errno style error code on failure. ++ ++ See sd_is_socket_inet(3) for more information. ++*/ ++int sd_is_socket_inet(int fd, int family, int type, int listening, uint16_t port) _sd_hidden_; ++ ++/* ++ Helper call for identifying a passed file descriptor. Returns 1 if ++ the file descriptor is an AF_UNIX socket of the specified type ++ (SOCK_DGRAM, SOCK_STREAM, ...) and path, 0 otherwise. If type is 0 ++ a socket type check will not be done. If path is NULL a socket path ++ check will not be done. For normal AF_UNIX sockets set length to ++ 0. For abstract namespace sockets set length to the length of the ++ socket name (including the initial 0 byte), and pass the full ++ socket path in path (including the initial 0 byte). The listening ++ flag is used the same way as in sd_is_socket(). Returns a negative ++ errno style error code on failure. ++ ++ See sd_is_socket_unix(3) for more information. ++*/ ++int sd_is_socket_unix(int fd, int type, int listening, const char *path, size_t length) _sd_hidden_; ++ ++/* ++ Informs systemd about changed daemon state. This takes a number of ++ newline separated environment-style variable assignments in a ++ string. The following variables are known: ++ ++ READY=1 Tells systemd that daemon startup is finished (only ++ relevant for services of Type=notify). The passed ++ argument is a boolean "1" or "0". Since there is ++ little value in signalling non-readiness the only ++ value daemons should send is "READY=1". ++ ++ STATUS=... Passes a single-line status string back to systemd ++ that describes the daemon state. This is free-from ++ and can be used for various purposes: general state ++ feedback, fsck-like programs could pass completion ++ percentages and failing programs could pass a human ++ readable error message. Example: "STATUS=Completed ++ 66% of file system check..." ++ ++ ERRNO=... If a daemon fails, the errno-style error code, ++ formatted as string. Example: "ERRNO=2" for ENOENT. ++ ++ BUSERROR=... If a daemon fails, the D-Bus error-style error ++ code. Example: "BUSERROR=org.freedesktop.DBus.Error.TimedOut" ++ ++ MAINPID=... The main pid of a daemon, in case systemd did not ++ fork off the process itself. Example: "MAINPID=4711" ++ ++ Daemons can choose to send additional variables. However, it is ++ recommened to prefix variable names not listed above with X_. ++ ++ Returns a negative errno-style error code on failure. Returns > 0 ++ if systemd could be notified, 0 if it couldn't possibly because ++ systemd is not running. ++ ++ Example: When a daemon finished starting up, it could issue this ++ call to notify systemd about it: ++ ++ sd_notify(0, "READY=1"); ++ ++ See sd_notifyf() for more complete examples. ++ ++ See sd_notify(3) for more information. ++*/ ++int sd_notify(int unset_environment, const char *state) _sd_hidden_; ++ ++/* ++ Similar to sd_notify() but takes a format string. ++ ++ Example 1: A daemon could send the following after initialization: ++ ++ sd_notifyf(0, "READY=1\n" ++ "STATUS=Processing requests...\n" ++ "MAINPID=%lu", ++ (unsigned long) getpid()); ++ ++ Example 2: A daemon could send the following shortly before ++ exiting, on failure: ++ ++ sd_notifyf(0, "STATUS=Failed to start up: %s\n" ++ "ERRNO=%i", ++ strerror(errno), ++ errno); ++ ++ See sd_notifyf(3) for more information. ++*/ ++int sd_notifyf(int unset_environment, const char *format, ...) _sd_printf_attr_(2,3) _sd_hidden_; ++ ++/* ++ Returns > 0 if the system was booted with systemd. Returns < 0 on ++ error. Returns 0 if the system was not booted with systemd. Note ++ that all of the functions above handle non-systemd boots just ++ fine. You should NOT protect them with a call to this function. Also ++ note that this function checks whether the system, not the user ++ session is controlled by systemd. However the functions above work ++ for both user and system services. ++ ++ See sd_booted(3) for more information. ++*/ ++int sd_booted(void) _sd_hidden_; ++ ++#ifdef __cplusplus ++} ++#endif ++ ++#endif +diff --git a/syslogd.c b/syslogd.c +index acfd8f1..9bfa8c7 100644 +--- a/syslogd.c ++++ b/syslogd.c +@@ -551,6 +551,7 @@ static char sccsid[] = "@(#)syslogd.c 5.27 (Berkeley) 10/10/88"; + + #if defined(__linux__) + #include ++#include + #endif + + #ifndef UTMP_FILE +@@ -965,8 +966,11 @@ int main(argc, argv) + } + signal (SIGTERM, SIG_DFL); + num_fds = getdtablesize(); +- for (i= 0; i < num_fds; i++) +- (void) close(i); ++#if defined(__linux__) ++ if (sd_listen_fds(0) <= 0) ++#endif ++ for (i = 0; i < num_fds; i++) ++ (void) close(i); + untty(); + } + else +@@ -1253,6 +1257,60 @@ static int create_unix_socket(const char *path) + if (path[0] == '\0') + return -1; + ++#if defined(__linux__) ++ if (strcmp(path, _PATH_LOG) == 0) { ++ int r; ++ ++ /* Check whether an FD was passed in from systemd. If ++ * so, it's the /dev/log socket, so use it. */ ++ ++ r = sd_listen_fds(0); ++ if (r < 0) { ++ logerror("Failed to acquire systemd socket"); ++#ifndef SYSV ++ dienow(); ++#else ++ return -1; ++#endif ++ } ++ ++ ++ if (r > 1) { ++ logerror("Wrong number of systemd sockets passed"); ++#ifndef SYSV ++ dienow(); ++#else ++ return -1; ++#endif ++ } ++ ++ if (r == 1) { ++ fd = SD_LISTEN_FDS_START; ++ r = sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/syslog", 0); ++ if (r < 0) { ++ logerror("Failed to verify systemd socket type"); ++#ifndef SYSV ++ dienow(); ++#else ++ return -1; ++#endif ++ } ++ ++ if (!r) { ++ logerror("Passed systemd socket of wrong type"); ++#ifndef SYSV ++ dienow(); ++#else ++ return -1; ++#endif ++ } ++ ++ dprintf("Using systemd socket (%d).\n", fd); ++ return fd; ++ } ++ } ++#endif ++ + (void) unlink(path); + + memset(&sunx, 0, sizeof(sunx)); +@@ -2254,7 +2311,12 @@ void die(sig) + if (InetInuse) close(inetm); + + /* Clean-up files. */ +- for (i = 0; i < nfunix; i++) ++ i = 0; ++#if defined(__linux__) ++ if (sd_listen_fds(0) > 0) ++ i = 1; ++#endif ++ for (; i < nfunix; i++) + if (funixn[i] && funix[i] != -1) + (void)unlink(funixn[i]); + #ifndef TESTING -- cgit 1.4.1