From 5802c44e3c968ee90c22faf9240370d933a2411d Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Sat, 27 Jul 2019 23:33:35 +0200 Subject: [PATCH] batmand: Convert to procd based init script The legacy init script had various problems in comparison with procd based init scripts. It wasn't able to correctly track the running process instance and thus could: * accidentally kill another (non init controlled) daemon instance when stop is used * not restart the daemon depending on config changes when reload is used The information about a running instance and its parameters can now be handled by a global controller (procd). The process must not fork anymore and leave the control to procd. The process with its parameters can then be used by procd to trigger the stop/start of the process at the right time. Signed-off-by: Sven Eckelmann --- batmand/Makefile | 2 +- batmand/files/etc/init.d/batmand | 60 +++++++++++----- ...able-forking-to-background-in-debug_.patch | 68 +++++++++++++++++++ 3 files changed, 113 insertions(+), 17 deletions(-) create mode 100644 batmand/patches/0001-Allow-one-to-disable-forking-to-background-in-debug_.patch diff --git a/batmand/Makefile b/batmand/Makefile index 77497ab..4f0e5e1 100644 --- a/batmand/Makefile +++ b/batmand/Makefile @@ -14,7 +14,7 @@ PKG_SOURCE_PROTO:=git PKG_SOURCE_URL:=https://git.open-mesh.org/batmand.git PKG_REV:=b67a7087b51d7a5e90d27ac39116d1f57257c86e PKG_VERSION:=1440 -PKG_RELEASE:=0 +PKG_RELEASE:=1 PKG_LICENSE:=GPL-2.0 PKG_SOURCE_VERSION:=$(PKG_REV) diff --git a/batmand/files/etc/init.d/batmand b/batmand/files/etc/init.d/batmand index add4ec8..8361e72 100644 --- a/batmand/files/etc/init.d/batmand +++ b/batmand/files/etc/init.d/batmand @@ -1,21 +1,39 @@ #!/bin/sh /etc/rc.common START=90 +USE_PROCD=1 -start () { - interface=$(uci get batmand.general.interface) +batmand_start() { + local config="$1" + local batman_args + local interface + local hnas + local gateway_class + local originator_interval + local preferred_gateway + local routing_class + local visualisation_srv + local local policy_routing_script + local disable_client_nat + local disable_aggregation + + [ "$config" = "general" ] || return 1 + + config_get interface "$config" interface if [ "$interface" = "" ]; then echo $1 Error, you must specify at least a network interface - exit + return 1 fi - hnas=$(uci get batmand.general.hna) - gateway_class=$(uci get batmand.general.gateway_class) - originator_interval=$(uci get batmand.general.originator_interval) - preferred_gateway=$(uci get batmand.general.preferred_gateway) - routing_class=$(uci get batmand.general.routing_class) - visualisation_srv=$(uci get batmand.general.visualisation_srv) - policy_routing_script=$(uci get batmand.general.policy_routing_script) - disable_client_nat=$(uci get batmand.general.disable_client_nat) - disable_aggregation=$(uci get batmand.general.disable_aggregation) + + config_get hnas "$config" hna + config_get gateway_class "$config" gateway_class + config_get originator_interval "$config" originator_interval + config_get preferred_gateway "$config" preferred_gateway + config_get routing_class "$config" routing_class + config_get visualisation_srv "$config" visualisation_srv + config_get policy_routing_script "$config" policy_routing_script + config_get disable_client_nat "$config" disable_client_nat + config_get disable_aggregation "$config" disable_aggregation + batman_args="" for hna in $hnas; do @@ -54,10 +72,20 @@ start () { batman_args=${batman_args}'--disable-aggregation ' fi - batman_args=${batman_args}$interface - batmand $batman_args >/dev/null 2>&1 + procd_open_instance "${config}" + procd_set_param command /usr/sbin/batmand + procd_append_param command --no-detach + procd_append_param command ${batman_args} + procd_append_param command ${interface} + procd_set_param netdev ${interface} + procd_close_instance } -stop () { - killall batmand +start_service() { + config_load "batmand" + config_foreach batmand_start batmand +} + +service_triggers() { + procd_add_reload_trigger "batmand" } diff --git a/batmand/patches/0001-Allow-one-to-disable-forking-to-background-in-debug_.patch b/batmand/patches/0001-Allow-one-to-disable-forking-to-background-in-debug_.patch new file mode 100644 index 0000000..90527e6 --- /dev/null +++ b/batmand/patches/0001-Allow-one-to-disable-forking-to-background-in-debug_.patch @@ -0,0 +1,68 @@ +From: Sven Eckelmann +Date: Sun, 1 Dec 2013 14:39:00 +0100 +Subject: Allow one to disable forking to background in debug_mode 0 + +--- + posix/init.c | 19 ++++++++++++++----- + 1 file changed, 14 insertions(+), 5 deletions(-) + +diff --git a/posix/init.c b/posix/init.c +index afd409f..901c65a 100644 +--- a/posix/init.c ++++ b/posix/init.c +@@ -44,6 +44,7 @@ + #define IOCSETDEV 1 + + int8_t stop; ++int no_detach = 0; + + + +@@ -159,6 +160,7 @@ void apply_init_args( int argc, char *argv[] ) { + {"purge-timeout", required_argument, 0, 'q'}, + {"disable-aggregation", no_argument, 0, 'x'}, + {"disable-client-nat", no_argument, 0, 'z'}, ++ {"no-detach", no_argument, 0, 'D'}, + {0, 0, 0, 0} + }; + +@@ -166,7 +168,7 @@ void apply_init_args( int argc, char *argv[] ) { + stop = 0; + prog_name = argv[0]; + +- while ( ( optchar = getopt_long( argc, argv, "a:A:bcd:hHio:g:p:r:s:vV", long_options, &option_index ) ) != -1 ) { ++ while ( ( optchar = getopt_long( argc, argv, "a:A:bcd:hHio:g:p:r:s:vVD", long_options, &option_index ) ) != -1 ) { + + switch ( optchar ) { + +@@ -378,6 +380,11 @@ void apply_init_args( int argc, char *argv[] ) { + found_args++; + break; + ++ case 'D': ++ no_detach = 1; ++ found_args++; ++ break; ++ + case 'h': + default: + usage(); +@@ -536,12 +543,14 @@ void apply_init_args( int argc, char *argv[] ) { + /* daemonize */ + if (debug_level == 0) { + +- if (my_daemon() < 0) { ++ if (!no_detach) { ++ if (my_daemon() < 0) { + +- printf("Error - can't fork to background: %s\n", strerror(errno)); +- restore_defaults(); +- exit(EXIT_FAILURE); ++ printf("Error - can't fork to background: %s\n", strerror(errno)); ++ restore_defaults(); ++ exit(EXIT_FAILURE); + ++ } + } + + openlog("batmand", LOG_PID, LOG_DAEMON);