From 0cad0c6c36af2a2d589563804c9ed2b37b7085fb Mon Sep 17 00:00:00 2001 From: Li xin Date: Fri, 21 Aug 2015 14:37:02 +0900 Subject: [PATCH] ystemd support backported from the master branch as of 23/04/2012 (post 5.7.1, pre 5.8). The following commits have been cherry-picked: 19499c3c90bf9d7b2b9e5d08baa26cc6bba28a11 fef6cddfdb94da1a6b1fb768af62918b80f11fd3 0641e43c694c485cbbffef0556efc4641bd3ff50 76530a89f1c8bbd0b63acce63e10d5d4812a1a16 (conflict resolved) bf108d7f1354f6276fc43c129963f2c49b9fc242 3692875172352f72cf3afd0d35f355e83d7e421b 74412748067c685e1d8ab6ed3bcc3ca9c2774844 86132e3f1e6ef7b4e0b96d8fa24e37c81b71b0e0 63557cf8986a33dba1d4429b583a901361052c4f Upstream-Status: Backport Signed-off-by: Thomas Fitzsimmons --- README.systemd | 41 +++ agent/snmpd.c | 33 +- apps/snmptrapd.c | 32 +- configure.d/config_modules_lib | 8 + configure.d/config_project_with_enable | 9 + dist/snmpd.servic | 18 + dist/snmpd.socket | 17 + dist/snmptrapd.service | 16 + dist/snmptrapd.socket | 14 + include/net-snmp/library/sd-daemon.h | 290 ++++++++++++++++ snmplib/sd-daemon.c | 532 +++++++++++++++++++++++++++++ snmplib/transports/snmpTCPDomain.c | 43 ++- snmplib/transports/snmpTCPIPv6Domain.c | 46 ++- snmplib/transports/snmpUDPIPv4BaseDomain.c | 33 +- snmplib/transports/snmpUDPIPv6Domain.c | 34 +- snmplib/transports/snmpUnixDomain.c | 66 ++-- win32/libsnmp/Makefile.in | 6 + win32/net-snmp/net-snmp-config.h | 2 + win32/net-snmp/net-snmp-config.h.in | 2 + 19 files changed, 1176 insertions(+), 66 deletions(-) create mode 100644 README.systemd create mode 100644 dist/snmpd.servic create mode 100644 dist/snmpd.socket create mode 100644 dist/snmptrapd.service create mode 100644 dist/snmptrapd.socket create mode 100644 include/net-snmp/library/sd-daemon.h create mode 100644 snmplib/sd-daemon.c diff --git a/README.systemd b/README.systemd new file mode 100644 index 0000000..dba15d1 --- /dev/null +++ b/README.systemd @@ -0,0 +1,41 @@ +README.systemd +-------------- +Net-SNMP provides two daemons, which support systemd system manager. +See http://www.freedesktop.org/wiki/Software/systemd to learn how +systemd works. Both socket activation and notification is supported by these +daemons. + +To enable systemd support, the sources must be compiled with +--with-systemd configure option. + +snmpd - The SNMP agent +---------------------- +Socket activation od snmpd daemon is implemented, but it's discouraged. +The reason is simple - snmpd not only listens and processes SNMP requests +from network, but also gathers system statistics counters, sends traps and +communicates with subagents. It even opens few netlink sockets. + +In other words, snmpd should run from system start to properly work. +This can be done in two ways: +1) either as snmpd service unit with 'Type=notification' and without a socket + unit +2) or as snmpd service unit with 'Type=simple', appropriate socket socket unit + and the snmpd service enabled. This way systemd creates the snmpd listening + socket early during boot and passes the sockets to snmpd slightly later + (but still during machine boot). This way systemd can paralelize start of + services, which depend on snmpd. Admins must adjust the socket file manually, + depending if the snmpd support AgentX, IPv6, SMUX etc. + +snmpd should be started with '-f' command line parameter to disable forking - +systemd does that for us automatically. + + +snmptrapd - The trap processing daemon +-------------------------------------- +snmptrapd supports full socket activation and also notification (if needed). +Both 'Type=simple' (with appropriate socket unit) and 'Type=notify' services +will work. Again, '-f' parameter should be provided on snmptrapd command line. + +If integration with SNMP agent using AgentX protocol is enabled, snmptrapd should +start during boot and not after first SNMP trap arrives. Same rules as for snmpd +applies then. diff --git a/agent/snmpd.c b/agent/snmpd.c index cfc7bce..116ee5c 100644 --- a/agent/snmpd.c +++ b/agent/snmpd.c @@ -164,6 +164,10 @@ typedef long fd_mask; #endif +#ifndef NETSNMP_NO_SYSTEMD +#include +#endif + netsnmp_feature_want(logging_file) netsnmp_feature_want(logging_stdio) netsnmp_feature_want(logging_syslog) @@ -443,19 +447,29 @@ main(int argc, char *argv[]) int agent_mode = -1; char *pid_file = NULL; char option_compatability[] = "-Le"; +#ifndef WIN32 + int prepared_sockets = 0; +#endif #if HAVE_GETPID int fd; FILE *PID; #endif #ifndef WIN32 +#ifndef NETSNMP_NO_SYSTEMD + /* check if systemd has sockets for us and don't close them */ + prepared_sockets = netsnmp_sd_listen_fds(0); +#endif /* NETSNMP_NO_SYSTEMD */ + /* * close all non-standard file descriptors we may have * inherited from the shell. */ - for (i = getdtablesize() - 1; i > 2; --i) { - (void) close(i); - } + if (!prepared_sockets) { + for (i = getdtablesize() - 1; i > 2; --i) { + (void) close(i); + } +} #endif /* #WIN32 */ /* @@ -1107,6 +1121,19 @@ main(int argc, char *argv[]) netsnmp_addrcache_initialise(); /* + * Let systemd know we're up. + */ +#ifndef NETSNMP_NO_SYSTEMD + netsnmp_sd_notify(1, "READY=1\n"); + if (prepared_sockets) + /* + * Clear the environment variable, we already processed all the sockets + * by now. + */ + netsnmp_sd_listen_fds(1); +#endif + + /* * Forever monitor the dest_port for incoming PDUs. */ DEBUGMSGTL(("snmpd/main", "We're up. Starting to process data.\n")); diff --git a/apps/snmptrapd.c b/apps/snmptrapd.c index bce0d47..c6a74ec 100644 --- a/apps/snmptrapd.c +++ b/apps/snmptrapd.c @@ -125,6 +125,10 @@ SOFTWARE. #include +#ifndef NETSNMP_NO_SYSTEMD +#include +#endif + #ifndef BSD4_3 #define BSD4_2 #endif @@ -657,16 +661,25 @@ main(int argc, char *argv[]) int agentx_subagent = 1; #endif netsnmp_trapd_handler *traph; +#ifndef WIN32 + int prepared_sockets = 0; +#endif #ifndef WIN32 +#ifndef NETSNMP_NO_SYSTEMD + /* check if systemd has sockets for us and don't close them */ + prepared_sockets = netsnmp_sd_listen_fds(0); +#endif /* * close all non-standard file descriptors we may have * inherited from the shell. */ - for (i = getdtablesize() - 1; i > 2; --i) { - (void) close(i); - } + if (!prepared_sockets) { + for (i = getdtablesize() - 1; i > 2; --i) { + (void) close(i); + } +} #endif /* #WIN32 */ #ifdef SIGTERM @@ -1318,6 +1331,19 @@ main(int argc, char *argv[]) #endif #endif + /* + * Let systemd know we're up. + */ +#ifndef NETSNMP_NO_SYSTEMD + netsnmp_sd_notify(1, "READY=1\n"); + if (prepared_sockets) + /* + * Clear the environment variable, we already processed all the sockets + * by now. + */ + netsnmp_sd_listen_fds(1); +#endif + #ifdef WIN32SERVICE trapd_status = SNMPTRAPD_RUNNING; #endif diff --git a/configure.d/config_modules_lib b/configure.d/config_modules_lib index 362ba0a..bb69daa 100644 --- a/configure.d/config_modules_lib +++ b/configure.d/config_modules_lib @@ -53,6 +53,14 @@ if test "x$PARTIALTARGETOS" = "xmingw32" -o "x$PARTIALTARGETOS" = "xmingw32msvc" other_ftobjs_list="$other_ftobjs_list winpipe.ft" fi +# Linux systemd +if test "x$with_systemd" == "xyes"; then + other_src_list="$other_src_list sd-daemon.c" + other_objs_list="$other_objs_list sd-daemon.o" + other_lobjs_list="$other_lobjs_list sd-daemon.lo" + other_ftobjs_list="$other_ftobjs_list sd-daemon.ft" +fi + AC_SUBST(other_src_list) AC_SUBST(other_objs_list) AC_SUBST(other_lobjs_list) diff --git a/configure.d/config_project_with_enable b/configure.d/config_project_with_enable index 61ba026..d782d12 100644 --- a/configure.d/config_project_with_enable +++ b/configure.d/config_project_with_enable @@ -690,6 +690,15 @@ if test "x$with_dummy_values" != "xyes"; then data for]) fi +NETSNMP_ARG_WITH(systemd, +[ --with-systemd Provide systemd support. See README.systemd + for details.]) +# Define unless specifically suppressed (i.e., option defaults to false). +if test "x$with_systemd" != "xyes"; then + AC_DEFINE(NETSNMP_NO_SYSTEMD, 1, + [If you don't want to integrate with systemd.]) +fi + NETSNMP_ARG_ENABLE(set-support, [ --disable-set-support Do not allow SNMP set requests.]) if test "x$enable_set_support" = "xno"; then diff --git a/dist/snmpd.servic b/dist/snmpd.servic new file mode 100644 index 0000000..31391e5 --- /dev/null +++ b/dist/snmpd.servic @@ -0,0 +1,18 @@ +# +# SNMP agent service file for systemd +# +# +# The service should be enabled, i.e. snmpd should start during machine boot. +# Socket activation shall not be used. See README.systemd for details. + +[Unit] +Description=Simple Network Management Protocol (SNMP) daemon. +After=syslog.target network.target + +[Service] +# Type=notify is also supported. It should be set when snmpd.socket is not used. +Type=simple +ExecStart=/usr/sbin/snmpd -f + +[Install] +WantedBy=multi-user.target diff --git a/dist/snmpd.socket b/dist/snmpd.socket new file mode 100644 index 0000000..7f3a2d9 --- /dev/null +++ b/dist/snmpd.socket @@ -0,0 +1,17 @@ +[Unit] +Description=Socket listening for SNMP and AgentX messages + +[Socket] +ListenDatagram=0.0.0.0:161 +# Uncomment other listening addresses as needed - TCP, UDP6, TCP6. +# It must match listening addresses/ports defined in snmpd.service +# or snmpd.conf. +# ListenStream=0.0.0.0:161 +# ListenDatagram=[::]:161 +# ListenStream=[::]:161 +# +# Uncomment AgentX socket if snmpd.conf enables AgentX protocol. +# ListenStream=/var/agentx/master + +[Install] +WantedBy=sockets.target diff --git a/dist/snmptrapd.service b/dist/snmptrapd.service new file mode 100644 index 0000000..e88a5b4 --- /dev/null +++ b/dist/snmptrapd.service @@ -0,0 +1,16 @@ +# +# SNMP trap-processing service file for systemd +# + +[Unit] +Description=Simple Network Management Protocol (SNMP) Trap daemon. +After=syslog.target network.target + +[Service] +# Type=notify is also supported. It should be set when snmptrapd.socket is not +# used. +Type=simple +ExecStart=/usr/sbin/snmptrapd -f + +[Install] +WantedBy=multi-user.target diff --git a/dist/snmptrapd.socket b/dist/snmptrapd.socket new file mode 100644 index 0000000..2d24fb8 --- /dev/null +++ b/dist/snmptrapd.socket @@ -0,0 +1,14 @@ ++[Unit] ++Description=Socket listening for SNMP trap messages ++ ++[Socket] ++ListenDatagram=0.0.0.0:162 ++# Uncomment other listening addresses as needed - TCP, UDP6, TCP6. ++# It must match listening addresses/ports defined in snmptrapd.service ++# or snmptrapd.conf. ++# ListenStream=0.0.0.0:162 ++# ListenDatagram=[::]:162 ++# ListenStream=[::]:162 ++ ++[Install] ++WantedBy=sockets.target diff --git a/include/net-snmp/library/sd-daemon.h b/include/net-snmp/library/sd-daemon.h new file mode 100644 index 0000000..85274c9 --- /dev/null +++ b/include/net-snmp/library/sd-daemon.h @@ -0,0 +1,290 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +#ifndef SNMPD_SD_DAEMON_H +#define SNMPD_SD_DAEMON_H + +/*** + 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. +***/ + +#ifdef HAVE_SYS_TYPES_H +#include +#endif +#ifdef HAVE_INTTYPES_H +#include +#endif + +#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 + +/* + 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 netsnmp_sd_listen_fds(int unset_environment); + +/* + 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 netsnmp_sd_is_fifo(int fd, const char *path); + +/* + Helper call for identifying a passed file descriptor. Returns 1 if + the file descriptor is a special character device on 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 special character. + Returns a negative errno style error code on failure. + + See sd_is_special(3) for more information. +*/ +int netsnmp_sd_is_special(int fd, const char *path); + +/* + 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 netsnmp_sd_is_socket(int fd, int family, int type, int listening); + +/* + 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 netsnmp_sd_is_socket_inet(int fd, int family, int type, int listening, uint16_t port); + +/* + 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 netsnmp_sd_is_socket_unix(int fd, int type, int listening, const char *path, size_t length); + +/* + 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 signaling 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 + recommended 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 netsnmp_sd_notify(int unset_environment, const char *state); + +/* + 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 netsnmp_sd_notifyf(int unset_environment, const char *format, ...) _sd_printf_attr_(2,3); + +/* + 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 netsnmp_sd_booted(void); + +/** + * Find an socket with given parameters. See man sd_is_socket_inet for + * description of the arguments. + * + * Returns the file descriptor if it is found, 0 otherwise. + */ +int netsnmp_sd_find_inet_socket(int family, int type, int listening, int port); + +/** + * Find an unix socket with given parameters. See man sd_is_socket_unix for + * description of the arguments. + * + * Returns the file descriptor if it is found, 0 otherwise. + */ +int +netsnmp_sd_find_unix_socket(int type, int listening, const char *path); + +#ifdef __cplusplus +} +#endif + +#endif /* SNMPD_SD_DAEMON_H */ diff --git a/snmplib/sd-daemon.c b/snmplib/sd-daemon.c new file mode 100644 index 0000000..42dba29 --- /dev/null +++ b/snmplib/sd-daemon.c @@ -0,0 +1,532 @@ +/* + * Systemd integration parts. + * + * Most of this file is directly copied from systemd sources. + * Changes: + * - all functions were renamed to have netsnmp_ prefix + * - includes were changed to match Net-SNMP style. + * - removed gcc export macros + * - removed POSIX message queues + */ + +#include +#include +#include +#include + +#ifndef NETSNMP_NO_SYSTEMD + +/*** + 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 + +#include + +int netsnmp_sd_listen_fds(int unset_environment) { + + 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; +} + +int netsnmp_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; +} + +int netsnmp_sd_is_special(int fd, const char *path) { + struct stat st_fd; + + if (fd < 0) + return -EINVAL; + + if (fstat(fd, &st_fd) < 0) + return -errno; + + if (!S_ISREG(st_fd.st_mode) && !S_ISCHR(st_fd.st_mode)) + return 0; + + if (path) { + struct stat st_path; + + if (stat(path, &st_path) < 0) { + + if (errno == ENOENT || errno == ENOTDIR) + return 0; + + return -errno; + } + + if (S_ISREG(st_fd.st_mode) && S_ISREG(st_path.st_mode)) + return + st_path.st_dev == st_fd.st_dev && + st_path.st_ino == st_fd.st_ino; + else if (S_ISCHR(st_fd.st_mode) && S_ISCHR(st_path.st_mode)) + return st_path.st_rdev == st_fd.st_rdev; + else + return 0; + } + + 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 netsnmp_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 netsnmp_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 netsnmp_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 netsnmp_sd_notify(int unset_environment, const char *state) { + 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; +} + +int netsnmp_sd_notifyf(int unset_environment, const char *format, ...) { + 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 = netsnmp_sd_notify(unset_environment, p); + free(p); + + return r; +} + +int netsnmp_sd_booted(void) { + 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; +} + +/* End of original sd-daemon.c from systemd sources */ + +int +netsnmp_sd_find_inet_socket(int family, int type, int listening, int port) +{ + int count, fd; + + count = netsnmp_sd_listen_fds(0); + if (count <= 0) { + DEBUGMSGTL(("systemd:find_inet_socket", "No LISTEN_FDS found.\n")); + return 0; + } + DEBUGMSGTL(("systemd:find_inet_socket", "LISTEN_FDS reports %d sockets.\n", + count)); + + for (fd = 3; fd < 3+count; fd++) { + int rc = netsnmp_sd_is_socket_inet(fd, family, type, listening, port); + if (rc < 0) + DEBUGMSGTL(("systemd:find_inet_socket", + "sd_is_socket_inet error: %d\n", rc)); + if (rc > 0) { + DEBUGMSGTL(("systemd:find_inet_socket", + "Found the socket in LISTEN_FDS\n")); + return fd; + } + } + DEBUGMSGTL(("systemd:find_inet_socket", "Socket not found in LISTEN_FDS\n")); + return 0; +} + +int +netsnmp_sd_find_unix_socket(int type, int listening, const char *path) +{ + int count, fd; + + count = netsnmp_sd_listen_fds(0); + if (count <= 0) { + DEBUGMSGTL(("systemd:find_unix_socket", "No LISTEN_FDS found.\n")); + return 0; + } + DEBUGMSGTL(("systemd:find_unix_socket", "LISTEN_FDS reports %d sockets.\n", + count)); + + for (fd = 3; fd < 3+count; fd++) { + int rc = netsnmp_sd_is_socket_unix(fd, type, listening, path, 0); + if (rc < 0) + DEBUGMSGTL(("systemd:find_unix_socket", + "netsnmp_sd_is_socket_unix error: %d\n", rc)); + if (rc > 0) { + DEBUGMSGTL(("systemd:find_unix_socket", + "Found the socket in LISTEN_FDS\n")); + return fd; + } + } + DEBUGMSGTL(("systemd:find_unix_socket", "Socket not found in LISTEN_FDS\n")); + return 0; +} + +#endif /* ! NETSNMP_NO_SYSTEMD */ diff --git a/snmplib/transports/snmpTCPDomain.c b/snmplib/transports/snmpTCPDomain.c index 7feb028..a41b926 100644 --- a/snmplib/transports/snmpTCPDomain.c +++ b/snmplib/transports/snmpTCPDomain.c @@ -43,6 +43,10 @@ #include #include +#ifndef NETSNMP_NO_SYSTEMD +#include +#endif + /* * needs to be in sync with the definitions in snmplib/snmpUDPDomain.c * and perl/agent/agent.xs @@ -149,6 +153,7 @@ netsnmp_tcp_transport(struct sockaddr_in *addr, int local) netsnmp_transport *t = NULL; netsnmp_udp_addr_pair *addr_pair = NULL; int rc = 0; + int socket_initialized = 0; #ifdef NETSNMP_NO_LISTEN_SUPPORT if (local) @@ -178,7 +183,19 @@ netsnmp_tcp_transport(struct sockaddr_in *addr, int local) t->domain_length = sizeof(netsnmp_snmpTCPDomain) / sizeof(netsnmp_snmpTCPDomain[0]); - t->sock = socket(PF_INET, SOCK_STREAM, 0); +#ifndef NETSNMP_NO_SYSTEMD + /* + * Maybe the socket was already provided by systemd... + */ + if (local) { + t->sock = netsnmp_sd_find_inet_socket(PF_INET, SOCK_STREAM, 1, + ntohs(addr->sin_port)); + if (t->sock) + socket_initialized = 1; + } +#endif + if (!socket_initialized) + t->sock = socket(PF_INET, SOCK_STREAM, 0); if (t->sock < 0) { netsnmp_transport_free(t); return NULL; @@ -215,11 +232,13 @@ netsnmp_tcp_transport(struct sockaddr_in *addr, int local) setsockopt(t->sock, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)); - rc = bind(t->sock, (struct sockaddr *)addr, sizeof(struct sockaddr)); - if (rc != 0) { - netsnmp_socketbase_close(t); - netsnmp_transport_free(t); - return NULL; + if (!socket_initialized) { + rc = bind(t->sock, (struct sockaddr *)addr, sizeof(struct sockaddr)); + if (rc != 0) { + netsnmp_socketbase_close(t); + netsnmp_transport_free(t); + return NULL; + } } /* @@ -236,11 +255,13 @@ netsnmp_tcp_transport(struct sockaddr_in *addr, int local) * Now sit here and wait for connections to arrive. */ - rc = listen(t->sock, NETSNMP_STREAM_QUEUE_LEN); - if (rc != 0) { - netsnmp_socketbase_close(t); - netsnmp_transport_free(t); - return NULL; + if (!socket_initialized) { + rc = listen(t->sock, NETSNMP_STREAM_QUEUE_LEN); + if (rc != 0) { + netsnmp_socketbase_close(t); + netsnmp_transport_free(t); + return NULL; + } } /* diff --git a/snmplib/transports/snmpTCPIPv6Domain.c b/snmplib/transports/snmpTCPIPv6Domain.c index d2e0a2d..22de6d4 100644 --- a/snmplib/transports/snmpTCPIPv6Domain.c +++ b/snmplib/transports/snmpTCPIPv6Domain.c @@ -49,6 +49,10 @@ #include #include +#ifndef NETSNMP_NO_SYSTEMD +#include +#endif + #include "inet_ntop.h" oid netsnmp_TCPIPv6Domain[] = { TRANSPORT_DOMAIN_TCP_IPV6 }; @@ -140,6 +144,8 @@ netsnmp_tcp6_transport(struct sockaddr_in6 *addr, int local) { netsnmp_transport *t = NULL; int rc = 0; + char *str = NULL; + int socket_initialized = 0; #ifdef NETSNMP_NO_LISTEN_SUPPORT if (local) @@ -174,7 +180,19 @@ netsnmp_tcp6_transport(struct sockaddr_in6 *addr, int local) t->domain = netsnmp_TCPIPv6Domain; t->domain_length = sizeof(netsnmp_TCPIPv6Domain) / sizeof(oid); - t->sock = socket(PF_INET6, SOCK_STREAM, 0); +#ifndef NETSNMP_NO_SYSTEMD + /* + * Maybe the socket was already provided by systemd... + */ + if (local) { + t->sock = netsnmp_sd_find_inet_socket(PF_INET6, SOCK_STREAM, 1, + ntohs(addr->sin6_port)); + if (t->sock) + socket_initialized = 1; + } +#endif + if (!socket_initialized) + t->sock = socket(PF_INET6, SOCK_STREAM, 0); if (t->sock < 0) { netsnmp_transport_free(t); return NULL; @@ -220,12 +238,14 @@ netsnmp_tcp6_transport(struct sockaddr_in6 *addr, int local) setsockopt(t->sock, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)); - rc = bind(t->sock, (struct sockaddr *) addr, - sizeof(struct sockaddr_in6)); - if (rc != 0) { - netsnmp_socketbase_close(t); - netsnmp_transport_free(t); - return NULL; + if (!socket_initialized) { + rc = bind(t->sock, (struct sockaddr *) addr, + sizeof(struct sockaddr_in6)); + if (rc != 0) { + netsnmp_socketbase_close(t); + netsnmp_transport_free(t); + return NULL; + } } /* @@ -242,11 +262,13 @@ netsnmp_tcp6_transport(struct sockaddr_in6 *addr, int local) * Now sit here and wait for connections to arrive. */ - rc = listen(t->sock, NETSNMP_STREAM_QUEUE_LEN); - if (rc != 0) { - netsnmp_socketbase_close(t); - netsnmp_transport_free(t); - return NULL; + if (!socket_initialized) { + rc = listen(t->sock, NETSNMP_STREAM_QUEUE_LEN); + if (rc != 0) { + netsnmp_socketbase_close(t); + netsnmp_transport_free(t); + return NULL; + } } /* diff --git a/snmplib/transports/snmpUDPIPv4BaseDomain.c b/snmplib/transports/snmpUDPIPv4BaseDomain.c index 8c0fb05..00e5bbc 100644 --- a/snmplib/transports/snmpUDPIPv4BaseDomain.c +++ b/snmplib/transports/snmpUDPIPv4BaseDomain.c @@ -40,6 +40,10 @@ #include +#ifndef NETSNMP_NO_SYSTEMD +#include +#endif + #if defined(HAVE_IP_PKTINFO) || defined(HAVE_IP_RECVDSTADDR) int netsnmp_udpipv4_recvfrom(int s, void *buf, int len, struct sockaddr *from, socklen_t *fromlen, struct sockaddr *dstip, @@ -64,6 +68,7 @@ netsnmp_udpipv4base_transport(struct sockaddr_in *addr, int local) char *client_socket = NULL; netsnmp_indexed_addr_pair addr_pair; socklen_t local_addr_len; + int socket_initialized = 0; #ifdef NETSNMP_NO_LISTEN_SUPPORT if (local) @@ -88,7 +93,19 @@ netsnmp_udpipv4base_transport(struct sockaddr_in *addr, int local) free(str); } - t->sock = socket(PF_INET, SOCK_DGRAM, 0); +#ifndef NETSNMP_NO_SYSTEMD + /* + * Maybe the socket was already provided by systemd... + */ + if (local) { + t->sock = netsnmp_sd_find_inet_socket(PF_INET, SOCK_DGRAM, -1, + ntohs(addr->sin_port)); + if (t->sock) + socket_initialized = 1; + } +#endif + if (!socket_initialized) + t->sock = socket(PF_INET, SOCK_DGRAM, 0); DEBUGMSGTL(("UDPBase", "openned socket %d as local=%d\n", t->sock, local)); if (t->sock < 0) { netsnmp_transport_free(t); @@ -151,12 +168,14 @@ netsnmp_udpipv4base_transport(struct sockaddr_in *addr, int local) } } #endif /* !defined(WIN32) */ - rc = bind(t->sock, (struct sockaddr *) addr, - sizeof(struct sockaddr)); - if (rc != 0) { - netsnmp_socketbase_close(t); - netsnmp_transport_free(t); - return NULL; + if (!socket_initialized) { + rc = bind(t->sock, (struct sockaddr *) addr, + sizeof(struct sockaddr)); + if (rc != 0) { + netsnmp_socketbase_close(t); + netsnmp_transport_free(t); + return NULL; + } } t->data = NULL; t->data_length = 0; diff --git a/snmplib/transports/snmpUDPIPv6Domain.c b/snmplib/transports/snmpUDPIPv6Domain.c index 18de876..fd2ced4 100644 --- a/snmplib/transports/snmpUDPIPv6Domain.c +++ b/snmplib/transports/snmpUDPIPv6Domain.c @@ -67,6 +67,10 @@ static const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT; #include #include +#ifndef NETSNMP_NO_SYSTEMD +#include +#endif + #include "inet_ntop.h" #include "inet_pton.h" @@ -190,6 +194,8 @@ netsnmp_udp6_transport(struct sockaddr_in6 *addr, int local) { netsnmp_transport *t = NULL; int rc = 0; + char *str = NULL; + int socket_initialized = 0; #ifdef NETSNMP_NO_LISTEN_SUPPORT if (local) @@ -217,7 +223,19 @@ netsnmp_udp6_transport(struct sockaddr_in6 *addr, int local) t->domain_length = sizeof(netsnmp_UDPIPv6Domain) / sizeof(netsnmp_UDPIPv6Domain[0]); - t->sock = socket(PF_INET6, SOCK_DGRAM, 0); +#ifndef NETSNMP_NO_SYSTEMD + /* + * Maybe the socket was already provided by systemd... + */ + if (local) { + t->sock = netsnmp_sd_find_inet_socket(PF_INET6, SOCK_DGRAM, -1, + ntohs(addr->sin6_port)); + if (t->sock) + socket_initialized = 1; + } +#endif + if (!socket_initialized) + t->sock = socket(PF_INET6, SOCK_DGRAM, 0); if (t->sock < 0) { netsnmp_transport_free(t); return NULL; @@ -243,12 +261,14 @@ netsnmp_udp6_transport(struct sockaddr_in6 *addr, int local) } #endif - rc = bind(t->sock, (struct sockaddr *) addr, - sizeof(struct sockaddr_in6)); - if (rc != 0) { - netsnmp_socketbase_close(t); - netsnmp_transport_free(t); - return NULL; + if (!socket_initialized) { + rc = bind(t->sock, (struct sockaddr *) addr, + sizeof(struct sockaddr_in6)); + if (rc != 0) { + netsnmp_socketbase_close(t); + netsnmp_transport_free(t); + return NULL; + } } t->local = (unsigned char*)malloc(18); if (t->local == NULL) { diff --git a/snmplib/transports/snmpUnixDomain.c b/snmplib/transports/snmpUnixDomain.c index 47dffc1..8f34c37 100644 --- a/snmplib/transports/snmpUnixDomain.c +++ b/snmplib/transports/snmpUnixDomain.c @@ -37,6 +37,10 @@ #include /* mkdirhier */ #include +#ifndef NETSNMP_NO_SYSTEMD +#include +#endif + netsnmp_feature_child_of(transport_unix_socket_all, transport_all) netsnmp_feature_child_of(unix_socket_paths, transport_unix_socket_all) @@ -295,6 +299,8 @@ netsnmp_unix_transport(struct sockaddr_un *addr, int local) netsnmp_transport *t = NULL; sockaddr_un_pair *sup = NULL; int rc = 0; + char *string = NULL; + int socket_initialized = 0; #ifdef NETSNMP_NO_LISTEN_SUPPORT /* SPECIAL CIRCUMSTANCE: We still want AgentX to be able to operate, @@ -333,7 +339,18 @@ netsnmp_unix_transport(struct sockaddr_un *addr, int local) t->data_length = sizeof(sockaddr_un_pair); sup = (sockaddr_un_pair *) t->data; - t->sock = socket(PF_UNIX, SOCK_STREAM, 0); +#ifndef NETSNMP_NO_SYSTEMD + /* + * Maybe the socket was already provided by systemd... + */ + if (local) { + t->sock = netsnmp_sd_find_unix_socket(SOCK_STREAM, 1, addr->sun_path); + if (t->sock) + socket_initialized = 1; + } +#endif + if (!socket_initialized) + t->sock = socket(PF_UNIX, SOCK_STREAM, 0); if (t->sock < 0) { netsnmp_transport_free(t); return NULL; @@ -357,25 +374,26 @@ netsnmp_unix_transport(struct sockaddr_un *addr, int local) t->flags |= NETSNMP_TRANSPORT_FLAG_LISTEN; - unlink(addr->sun_path); - rc = bind(t->sock, (struct sockaddr *) addr, SUN_LEN(addr)); - - if (rc != 0 && errno == ENOENT && create_path) { - rc = mkdirhier(addr->sun_path, create_mode, 1); + if (!socket_initialized) { + unlink(addr->sun_path); + rc = bind(t->sock, (struct sockaddr *) addr, SUN_LEN(addr)); + if (rc != 0 && errno == ENOENT && create_path) { + rc = mkdirhier(addr->sun_path, create_mode, 1); + if (rc != 0) { + netsnmp_unix_close(t); + netsnmp_transport_free(t); + return NULL; + } + rc = bind(t->sock, (struct sockaddr *) addr, SUN_LEN(addr)); + } if (rc != 0) { + DEBUGMSGTL(("netsnmp_unix_transport", + "couldn't bind \"%s\", errno %d (%s)\n", + addr->sun_path, errno, strerror(errno))); netsnmp_unix_close(t); netsnmp_transport_free(t); return NULL; } - rc = bind(t->sock, (struct sockaddr *) addr, SUN_LEN(addr)); - } - if (rc != 0) { - DEBUGMSGTL(("netsnmp_unix_transport", - "couldn't bind \"%s\", errno %d (%s)\n", - addr->sun_path, errno, strerror(errno))); - netsnmp_unix_close(t); - netsnmp_transport_free(t); - return NULL; } /* @@ -391,14 +409,16 @@ netsnmp_unix_transport(struct sockaddr_un *addr, int local) * Now sit here and listen for connections to arrive. */ - rc = listen(t->sock, NETSNMP_STREAM_QUEUE_LEN); - if (rc != 0) { - DEBUGMSGTL(("netsnmp_unix_transport", - "couldn't listen to \"%s\", errno %d (%s)\n", - addr->sun_path, errno, strerror(errno))); - netsnmp_unix_close(t); - netsnmp_transport_free(t); - return NULL; + if (!socket_initialized) { + rc = listen(t->sock, NETSNMP_STREAM_QUEUE_LEN); + if (rc != 0) { + DEBUGMSGTL(("netsnmp_unix_transport", + "couldn't listen to \"%s\", errno %d (%s)\n", + addr->sun_path, errno, strerror(errno))); + netsnmp_unix_close(t); + netsnmp_transport_free(t); + return NULL; + } } } else { diff --git a/win32/libsnmp/Makefile.in b/win32/libsnmp/Makefile.in index 98d83c8..b228d20 100644 --- a/win32/libsnmp/Makefile.in +++ b/win32/libsnmp/Makefile.in @@ -42,6 +42,7 @@ LIB32_OBJS= \ "$(INTDIR)\read_config.obj" \ "$(INTDIR)\readdir.obj" \ "$(INTDIR)\scapi.obj" \ + "$(INTDIR)\sd-daemon.obj" \ "$(INTDIR)\snmp-tc.obj" \ "$(INTDIR)\snmp.obj" \ "$(INTDIR)\snmpCallbackDomain.obj" \ @@ -138,6 +139,11 @@ SOURCE=..\..\snmplib\asn1.c "$(INTDIR)\asn1.obj" : $(SOURCE) "$(INTDIR)" $(CPP) $(CPP_PROJ) $(SOURCE) +SOURCE=..\..\snmplib\sd-daemon.c + +"$(INTDIR)\sd-daemon.obj" : $(SOURCE) "$(INTDIR)" + $(CPP) $(CPP_PROJ) $(SOURCE) + SOURCE=..\..\snmplib\callback.c diff --git a/win32/net-snmp/net-snmp-config.h b/win32/net-snmp/net-snmp-config.h index 1608563..7aec547 100644 --- a/win32/net-snmp/net-snmp-config.h +++ b/win32/net-snmp/net-snmp-config.h @@ -1717,6 +1717,8 @@ enum { #define DMALLOC_FUNC_CHECK #endif ++#define NETSNMP_NO_SYSTEMD ++ /* #undef NETSNMP_ENABLE_LOCAL_SMUX */ /* define if agentx transport is to use domain sockets only */ diff --git a/win32/net-snmp/net-snmp-config.h.in b/win32/net-snmp/net-snmp-config.h.in index 9693730..96ec3d9 100644 --- a/win32/net-snmp/net-snmp-config.h.in +++ b/win32/net-snmp/net-snmp-config.h.in @@ -1717,6 +1717,8 @@ enum { #define DMALLOC_FUNC_CHECK #endif +#define NETSNMP_NO_SYSTEMD + /* #undef NETSNMP_ENABLE_LOCAL_SMUX */ /* define if agentx transport is to use domain sockets only */ -- 1.8.4.2