diff options
4 files changed, 1654 insertions, 2 deletions
diff --git a/meta-oe/recipes-extended/net-snmp/files/snmpd.service b/meta-oe/recipes-extended/net-snmp/files/snmpd.service new file mode 100644 index 0000000..10a1eb2 --- /dev/null +++ b/meta-oe/recipes-extended/net-snmp/files/snmpd.service @@ -0,0 +1,13 @@ +[Unit] +Description=Simple Network Management Protocol (SNMP) Daemon. +After=syslog.target network.target + +[Service] +Type=notify +Environment=OPTIONS="-LS0-6d" +EnvironmentFile=-/etc/default/snmpd +ExecStart=/usr/sbin/snmpd $OPTIONS -f +ExecReload=/bin/kill -HUP $MAINPID + +[Install] +WantedBy=multi-user.target diff --git a/meta-oe/recipes-extended/net-snmp/files/snmptrapd.service b/meta-oe/recipes-extended/net-snmp/files/snmptrapd.service new file mode 100644 index 0000000..951f9f2 --- /dev/null +++ b/meta-oe/recipes-extended/net-snmp/files/snmptrapd.service @@ -0,0 +1,13 @@ +[Unit] +Description=Simple Network Management Protocol (SNMP) Trap Daemon. +After=syslog.target network.target + +[Service] +Type=notify +Environment=OPTIONS="-Lsd" +EnvironmentFile=-/etc/default/snmptrapd +ExecStart=/usr/sbin/snmptrapd $OPTIONS -f +ExecReload=/bin/kill -HUP $MAINPID + +[Install] +WantedBy=multi-user.target diff --git a/meta-oe/recipes-extended/net-snmp/files/systemd-support.patch b/meta-oe/recipes-extended/net-snmp/files/systemd-support.patch new file mode 100644 index 0000000..18955f2 --- /dev/null +++ b/meta-oe/recipes-extended/net-snmp/files/systemd-support.patch @@ -0,0 +1,1616 @@ +Systemd 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 +74412748067c685e1d8ab6ed3bcc3ca9c2774844 +86132e3f1e6ef7b4e0b96d8fa24e37c81b71b0e0 +63557cf8986a33dba1d4429b583a901361052c4f + +Upstream-Status: Backport + +diff --git a/README.systemd b/README.systemd +new file mode 100644 +index 0000000..f731851 +--- /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. +\ No newline at end of file +diff --git a/agent/snmpd.c b/agent/snmpd.c +index b177d5b..08bdfc7 100644 +--- a/agent/snmpd.c ++++ b/agent/snmpd.c +@@ -164,6 +164,10 @@ typedef long fd_mask; + + #endif + ++#ifndef NETSNMP_NO_SYSTEMD ++#include <net-snmp/library/sd-daemon.h> ++#endif ++ + netsnmp_feature_want(logging_file) + netsnmp_feature_want(logging_stdio) + netsnmp_feature_want(logging_syslog) +@@ -441,18 +445,28 @@ 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_SYSYSTEMD ++ /* check if systemd has sockets for us and don't close them */ ++ prepared_sockets = netsnmp_sd_listen_fds(0); ++#endif /* NETSNMP_NO_SYSYSTEMD */ ++ + /* + * 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 */ + +@@ -1100,6 +1114,19 @@ 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 1a52080..0857ae1 100644 +--- a/apps/snmptrapd.c ++++ b/apps/snmptrapd.c +@@ -125,6 +125,10 @@ SOFTWARE. + + #include <net-snmp/net-snmp-features.h> + ++#ifndef NETSNMP_NO_SYSTEMD ++#include <net-snmp/library/sd-daemon.h> ++#endif ++ + #ifndef BSD4_3 + #define BSD4_2 + #endif +@@ -655,15 +659,24 @@ 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 */ + +@@ -1311,6 +1324,19 @@ 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 b6609c1..5849072 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="$other_ftobjs_list sd-daemon.ft" ++fi ++ + AC_SUBST(other_src_list) + AC_SUBST(other_objs_list) + AC_SUBST(other_lobjs_list) +diff --git a/configure.d/config_project_with_enable b/configure.d/config_project_with_enable +index 8b46ad2..59d6d5c 100644 +--- a/configure.d/config_project_with_enable ++++ b/configure.d/config_project_with_enable +@@ -689,6 +689,15 @@ if test "x$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.service b/dist/snmpd.service +new file mode 100644 +index 0000000..31391e5 +--- /dev/null ++++ b/dist/snmpd.service +@@ -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..0fc8a7c +--- /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 <sys/types.h> ++#endif ++#ifdef HAVE_INTTYPES_H ++#include <inttypes.h> ++#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 <net-snmp/net-snmp-config.h> ++#include <net-snmp/net-snmp-features.h> ++#include <net-snmp/types.h> ++#include <net-snmp/library/snmp_debug.h> ++ ++#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 <sys/types.h> ++#include <sys/stat.h> ++#include <sys/socket.h> ++#include <sys/un.h> ++#include <sys/fcntl.h> ++#include <netinet/in.h> ++#include <stdlib.h> ++#include <errno.h> ++#include <unistd.h> ++#include <string.h> ++#include <stdarg.h> ++#include <stdio.h> ++#include <stddef.h> ++#include <limits.h> ++ ++#include <net-snmp/library/sd-daemon.h> ++ ++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 b8bdba4..ab7f3a1 100644 +--- a/snmplib/transports/snmpTCPDomain.c ++++ b/snmplib/transports/snmpTCPDomain.c +@@ -43,6 +43,10 @@ + #include <net-snmp/library/snmpTCPBaseDomain.h> + #include <net-snmp/library/tools.h> + ++#ifndef NETSNMP_NO_SYSTEMD ++#include <net-snmp/library/sd-daemon.h> ++#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; ++ } + } + + /* +@@ -235,12 +254,13 @@ 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 3c96856..305a861 100644 +--- a/snmplib/transports/snmpTCPIPv6Domain.c ++++ b/snmplib/transports/snmpTCPIPv6Domain.c +@@ -49,6 +49,10 @@ + #include <net-snmp/library/snmpTCPBaseDomain.h> + #include <net-snmp/library/tools.h> + ++#ifndef NETSNMP_NO_SYSTEMD ++#include <net-snmp/library/sd-daemon.h> ++#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 c67427b..428e6d6 100644 +--- a/snmplib/transports/snmpUDPIPv4BaseDomain.c ++++ b/snmplib/transports/snmpUDPIPv4BaseDomain.c +@@ -40,6 +40,10 @@ + + #include <net-snmp/library/snmpSocketBaseDomain.h> + ++#ifndef NETSNMP_NO_SYSTEMD ++#include <net-snmp/library/sd-daemon.h> ++#endif ++ + #if (defined(linux) && defined(IP_PKTINFO)) \ + || defined(IP_RECVDSTADDR) && HAVE_STRUCT_MSGHDR_MSG_CONTROL \ + && HAVE_STRUCT_MSGHDR_MSG_FLAGS +@@ -67,6 +71,7 @@ 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) +@@ -91,7 +96,19 @@ 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); +@@ -141,12 +158,14 @@ netsnmp_udpipv4base_transport(struct sockaddr_in *addr, int local) + DEBUGMSGTL(("netsnmp_udp", "set IP_RECVDSTADDR\n")); + } + #endif +- 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 b3eaae4..35b617f 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 <net-snmp/library/snmpSocketBaseDomain.h> + #include <net-snmp/library/tools.h> + ++#ifndef NETSNMP_NO_SYSTEMD ++#include <net-snmp/library/sd-daemon.h> ++#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; +@@ -242,13 +260,14 @@ 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 674dc2b..9f3d3cb 100644 +--- a/snmplib/transports/snmpUnixDomain.c ++++ b/snmplib/transports/snmpUnixDomain.c +@@ -37,6 +37,10 @@ + #include <net-snmp/library/system.h> /* mkdirhier */ + #include <net-snmp/library/tools.h> + ++#ifndef NETSNMP_NO_SYSTEMD ++#include <net-snmp/library/sd-daemon.h> ++#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; + } + + /* +@@ -391,16 +409,17 @@ 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 { + t->remote = (u_char *)malloc(strlen(addr->sun_path)); + if (t->remote == NULL) { +diff --git a/win32/libsnmp/Makefile.in b/win32/libsnmp/Makefile.in +index 98d83c8..dd5689b 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" \ +@@ -307,6 +308,12 @@ SOURCE=..\..\snmplib\scapi.c + $(CPP) $(CPP_PROJ) $(SOURCE) + + ++SOURCE=..\..\snmplib\sd-daemon.c ++ ++"$(INTDIR)\sd-daemon.obj" : $(SOURCE) "$(INTDIR)" ++ $(CPP) $(CPP_PROJ) $(SOURCE) ++ ++ + SOURCE="..\..\snmplib\snmp-tc.c" + + "$(INTDIR)\snmp-tc.obj" : $(SOURCE) "$(INTDIR)" +diff --git a/win32/net-snmp/net-snmp-config.h b/win32/net-snmp/net-snmp-config.h +index 7791ee0..1eccf42 100644 +--- a/win32/net-snmp/net-snmp-config.h ++++ b/win32/net-snmp/net-snmp-config.h +@@ -1705,6 +1705,8 @@ 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 5215865..1607bfa 100644 +--- a/win32/net-snmp/net-snmp-config.h.in ++++ b/win32/net-snmp/net-snmp-config.h.in +@@ -1705,6 +1705,8 @@ 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/meta-oe/recipes-extended/net-snmp/net-snmp_5.7.1.bb b/meta-oe/recipes-extended/net-snmp/net-snmp_5.7.1.bb index 9cbc5a8..b2a9786 100644 --- a/meta-oe/recipes-extended/net-snmp/net-snmp_5.7.1.bb +++ b/meta-oe/recipes-extended/net-snmp/net-snmp_5.7.1.bb @@ -1,17 +1,25 @@ require net-snmp.inc -PR = "${INC_PR}.2" +inherit systemd + +PR = "${INC_PR}.3" LIC_FILES_CHKSUM = "file://README;beginline=3;endline=8;md5=7f7f00ba639ac8e8deb5a622ea24634e" SRC_URI = "${SOURCEFORGE_MIRROR}/net-snmp/net-snmp-${PV}.tar.gz \ file://sync-with-5.7-branch.patch \ file://libnl-3-support.patch \ + file://systemd-support.patch \ + file://snmpd.service \ + file://snmptrapd.service \ file://init \ file://snmpd.conf \ file://snmptrapd.conf" -EXTRA_OECONF += "--disable-embedded-perl --with-perl-modules=no" +EXTRA_OECONF += "--disable-embedded-perl --with-perl-modules=no --with-systemd " EXTRA_OEMAKE = "INSTALL_PREFIX=${D}" +SYSTEMD_PACKAGES = "${PN}-server-systemd" +SYSTEMD_SERVICE_${PN}-server-systemd = "snmpd.service snmptrapd.service" + do_configure_prepend() { gnu-configize -f # We better change sources and re-autoconf here, but @@ -26,3 +34,5 @@ CCACHE = "" SRC_URI[md5sum] = "c95d08fd5d93df0c11a2e1bdf0e01e0b" SRC_URI[sha256sum] = "7c71c9650c65b715356547e20ca2dbe6313944278af8cc19c32a5337f46b181f" + +RDEPENDS_${PN}-server-systemd = "${PN}-server" |