/usr/bin/stap-server is in systemtap-server 3.1-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 | #!/bin/bash
#
# stap-server script for managing the systemtap compile server
#
# Copyright (C) 2008-2011 Red Hat Inc.
#
# This file is part of systemtap, and is free software. You can
# redistribute it and/or modify it under the terms of the GNU General
# Public License (GPL); either version 2, or (at your option) any
# later version.
#
# This script provides management of systemtap compile servers as a service.
# See stap-server(8) for more information.
if [ -f /etc/rc.d/init.d/functions ]; then
# Red Hat init functions
. /etc/rc.d/init.d/functions
else
# Default init functions
success () {
echo -n "OK"
}
failure () {
echo -n "FAILED"
}
fi
# Systemtap function library
. /usr/lib/systemtap/stap-env
prog=stap-server
# Commands
STAP_START_SERVER=${stap_pkglibexecdir}stap-start-server
STAP_STOP_SERVER=${stap_pkglibexecdir}stap-stop-server
UNAME=/bin/uname
# Default Global Configuration
CONFIG_FILE=$stap_sysconfdir/sysconfig/stap-server
CONFIG_PATH=$stap_sysconfdir/stap-server/conf.d
STAT_PATH=$stap_localstatedir/run/stap-server
LOG_FILE=$stap_localstatedir/log/stap-server/log
# Default option settings
# Optional global config file
OPT_CONFIG_FILE=
OPT_OTHER=
OPT_PORT_IX=0
OPT_LOG_IX=0
OPT_SSL_IX=0
OPT_MAXTHREADS_IX=0
OPT_MAXREQSIZE_IX=0
OPT_MAXCOMPRESSEDREQ_IX=0
echo_usage () {
echo $"Usage: $prog {start|stop|restart|condrestart|try-restart|force-reload|status} [options]"
echo $"Options:"
echo $" -c configfile : specify additional global configuration file."
echo $" -a arch : specify the target architecture."
echo $" -r release : specify a kernel release."
echo $" -I path : augment the search path for tapsets."
echo $" -R path : specify the location of the systemtap runtime."
echo $" -B options : specify 'make' options for building systemtap modules."
echo $" -D name[=value] : add a macro definition for building systemtap modules."
echo $" -u username : specify the user who will run the server(s)."
echo $" -i : specify a server that handles all installed kernel releases."
echo $" -n nickname : specify a server configuration by nickname."
echo $" -p pid : specify a server or server configuration by process id."
echo $" -P : use a password for the server's NSS certificate database."
echo $" -k : keep server temporary files."
echo $" --port port : specify the network port to be used by the server."
echo $" --log path : specify the location of the server's log file."
echo $" --ssl path : specify the location of the server's certificate database."
echo $" --max-threads threads : specify the maximum number of worker threads to handle concurrent requests."
echo $" --max-request-size size : specify the maximum size of an uncompressed client request in bytes."
echo $" --max-compressed-request size : specify the maximum size of an compressed client request in bytes."
echo $""
echo $"All options may be specified more than once."
echo $""
echo $"If -a is not specified, the default architecture is that of the host"
echo $"platform."
echo $""
echo $"If -r is not specified, the default kernel release is that currently"
echo $"running on the host platform."
echo $""
echo $"If -u is not specified, the default user is 'stap-server'"
echo $""
echo $"If --port is not specified, the default is to use a randomly selected port."
echo $""
echo $"If --log is not specified, the default is '$stap_localstatedir/log/stap-server/log'."
echo $""
echo $"If --ssl is not specified, the default is '$stap_sysconfdir/ssl/server'."
echo $""
echo $"If --max-threads is not specified, the default is the number of processors."
echo $""
echo $"If --max-threads is specified with a value of 0, all requests are handled in the main thread."
echo $""
echo $"If --max-request-size is not specified, the default value is 50000 bytes."
echo $""
echo $"If --max-compressed-request is not specified, the default value is 5000 bytes."
echo $""
echo $"Each -D, -I and -B option specifies an additional macro, path or option respectively"
echo $"to be applied to subsequent servers specified."
echo $""
echo $"Each --port, --log, --ssl, --max-threads, --max-request-size, and"
echo $"--max-compressed-request option is added to an option-specific list"
echo $"which will be applied, in turn, to each server specified. If more "
echo $"servers are specified than options in a given list, the default for that"
echo $"option will be used for subsequent servers."
echo $""
echo $"For other options, each new instance overrides the previous setting."
echo $""
echo $"The -i option is a shortcut which specifies a server that handles every"
echo $"release installed in /lib/modules/."
echo $""
echo $"The -n option allows the specification of a server configuration by"
echo $"nickname. When -n is specified, a currently running server with the"
echo $"given nickname will be searched for. If no currently running server"
echo $"with the given nickname is found, a server configuration with the"
echo $"given nickname will be searched for in"
echo $"$stap_sysconfdir/stap-server/conf.d/*.conf."
echo $"If a server configuration for the given nickname is found, the -a, -r,"
echo $"-D, -I, -R, -B and -u options for that server will be used as if they were"
echo $"specified on the command line. If no configuration with the given"
echo $"nickname is found, and the action is 'start' (or an action behaving"
echo $"like 'start' (see below)), the server will be started with the given"
echo $"nickname. If no configuration with the given nickname is found, and"
echo $"the action is not 'start' (or an action behaving" "like 'start',"
echo $"it is an error. If a nickname is not specified for a server, its"
echo $"nickname will be its process id."
echo $""
echo $"The -p option allows the specification of a server configuration by"
echo $"process id. When -p is specified, a currently running server with the"
echo $"given process id will be searched for. If no such server is found,"
echo $"it is an error. If a server with the given pid is found, the -a, -r,"
echo $"-D, -I, -R, -B and -u options for that server will be used as if they were"
echo $"specified on the command line."
echo $""
echo $"The -k option tells the server to keep the temporary directories it creates"
echo $"during each transaction with a client."
echo $""
echo $"The specified action is performed for the server(s) specified on the"
echo $"command line. If no servers are specified on the command line, the"
echo $"behavior is as follows:"
echo $""
echo $" start: Start the servers configured in $stap_sysconfdir/stap-server/conf.d/*.conf."
echo $" If none are configured, start a server for the kernel release"
echo $" and architecture of the host platform."
echo $""
echo $" stop: Stop all currently running servers."
echo $""
echo $" restart: Restart all currently running servers. If no servers are running,"
echo $" behave as if 'start' was specified."
echo $""
echo $" condrestart: Restart all currently running servers. If no servers are running,"
echo $" do nothing."
echo $""
echo $" try-restart: Same as condrestart."
echo $""
echo $" force-reload: Stop all currently running servers and behave as if 'start'"
echo $" was specified."
echo $""
echo $" status: Report the status of all current running servers."
echo $""
}
#-----------------------------------------------------------------
# Helper functions
#-----------------------------------------------------------------
log () { # message
echo `LC_ALL=en date +"%b %e %T"`": $1" >> "$LOG_FILE"
}
clog () { # message [-n]
echo $2 "$1"
log "$1"
}
slog () { # message
logger "$1" # if syslogd is running, this message will be sent to syslog.
log "$1"
}
logex () { # command
eval log \"Exec: "$@"\"
"$@" >> "$LOG_FILE" 2>&1
return $?
}
do_failure () { # message
slog "Error: $1"
failure "$1"
}
do_success () { # message
log "Pass: $1"
success "$1"
}
#------------------------------------------------------------------
# Parameter parsing and setup options
#------------------------------------------------------------------
parse_args () { # arguments
local rc=0
while [ -n "$1" ]; do
case "$1" in
-k | -P)
OPT_OTHER="$OPT_OTHER $1"
shift 1
;;
-a)
SERVER_CMDS+=("ARCH=\"`quote_for_cmd "$2"`\"")
shift 1
;;
-B)
SERVER_CMDS+=("BUILD+=(\"`quote_for_cmd "$2"`\")")
shift 1
;;
-c)
OPT_CONFIG_FILE="$2"
shift 1
;;
-i)
process_i
;;
-D)
SERVER_CMDS+=("DEFINE+=(\"`quote_for_cmd "$2"`\")")
shift 1
;;
-I)
SERVER_CMDS+=("INCLUDE+=(\"`quote_for_cmd "$2"`\")")
shift 1
;;
-n)
process_n "$2"
shift 1
;;
-p)
process_p "$2"
test $? = 0 || rc=1
shift 1
;;
-r)
process_r "$2"
test $? = 0 || rc=1
shift 1
;;
-R)
SERVER_CMDS+=("RUNTIME=\"`quote_for_cmd "$2"`\"")
shift 1
;;
-u)
SERVER_CMDS+=("USER=\"`quote_for_cmd "$2"`\"")
shift 1
;;
--log)
OPT_LOG+=("$2")
shift 1
;;
--port)
OPT_PORT+=("$2")
shift 1
;;
--ssl)
OPT_SSL+=("$2")
shift 1
;;
--max-threads)
OPT_MAXTHREADS+=("$2")
shift 1
;;
--max-request-size)
OPT_MAXREQSIZE+=("$2")
shift 1
;;
--max-compressed-request)
OPT_MAXCOMPRESSEDREQ+=("$2")
shift 1
;;
--)
;;
*)
rc=1
;;
esac
shift 1
done
# Add options from any lists and an EXEC command to the end if any server options were specified
if test -n "$SERVER_CMDS"; then
add_distributed_options
SERVER_CMDS+=("EXEC")
fi
test $rc != 0 && echo_usage
return $rc
}
# Some options accumulate into lists when specified more than once. The items in the each list
# are the applied to each specified server in turn. If a list runs out, then the default for that
# option is applied.
add_distributed_options () {
# The --log option
if test -n "${OPT_LOG[$OPT_LOG_IX]}"; then
SERVER_CMDS+=("LOG=\"`quote_for_cmd "${OPT_LOG[$OPT_LOG_IX]}"`\"")
OPT_LOG_IX=$(($OPT_LOG_IX + 1))
else
SERVER_CMDS+=("LOG=\"`quote_for_cmd "$LOG_FILE"`\"")
fi
# The --port option
if test -n "${OPT_PORT[$OPT_PORT_IX]}"; then
SERVER_CMDS+=("PORT=\"`quote_for_cmd "${OPT_PORT[$OPT_PORT_IX]}"`\"")
OPT_PORT_IX=$(($OPT_PORT_IX + 1))
else
SERVER_CMDS+=("PORT=\"\"")
fi
# The --ssl option
if test -n "${OPT_SSL[$OPT_SSL_IX]}"; then
SERVER_CMDS+=("SSL=\"`quote_for_cmd "${OPT_SSL[$OPT_SSL_IX]}"`\"")
OPT_SSL_IX=$(($OPT_SSL_IX + 1))
else
SERVER_CMDS+=("SSL=\"\"")
fi
# The --max-threads option
if test -n "${OPT_MAXTHREADS[$OPT_MAXTHREADS_IX]}"; then
SERVER_CMDS+=("MAXTHREADS=\"`quote_for_cmd "${OPT_MAXTHREADS[$OPT_MAXTHREADS_IX]}"`\"")
OPT_MAXTHREADS_IX=$(($OPT_MAXTHREADS_IX + 1))
else
SERVER_CMDS+=("MAXTHREADS=\"\"")
fi
# The --max-request-size option
if test -n "${OPT_MAXREQSIZE[$OPT_MAXREQSIZE_IX]}"; then
SERVER_CMDS+=("MAXREQSIZE=\"`quote_for_cmd "${OPT_MAXREQSIZE[$OPT_MAXREQSIZE_IX]}"`\"")
OPT_MAXREQSIZE_IX=$(($OPT_MAXREQSIZE_IX + 1))
else
SERVER_CMDS+=("MAXREQSIZE=\"\"")
fi
# The --max-compressed-request option
if test -n "${OPT_MAXCOMPRESSEDREQ[$OPT_MAXCOMPRESSEDREQ_IX]}"; then
SERVER_CMDS+=("MAXCOMPRESSEDREQ=\"`quote_for_cmd "${OPT_MAXCOMPRESSEDREQ[$OPT_MAXCOMPRESSEDREQ_IX]}"`\"")
OPT_MAXCOMPRESSEDREQ_IX=$(($OPT_MAXCOMPRESSEDREQ_IX + 1))
else
SERVER_CMDS+=("MAXCOMPRESSEDREQ=\"\"")
fi
}
# Process the -i flag.
process_i () {
cd /lib/modules
local release
for release in `ls`; do
process_r $release
done
return 0
}
# Process the -n flag.
process_n () {
local target_NICKNAME="$1"
# Is there a running server with this nickname?
local pid=`get_server_pid_by_nickname "$target_NICKNAME"`
if [ -n "$pid" ]; then
# Read the configuration and add it to the configuration commands.
interpret_server_status "$STAT_PATH/$pid.stat" || continue
add_server_commands
return
fi
# Is there a server configuration with this nickname?
for f in "$CONFIG_PATH"/*.conf; do
if [ -f "$f" ]; then
interpret_server_config "$f" || continue
test "X$NICKNAME" = "X$target_NICKNAME" || continue
add_server_commands
return
fi
done
# No server configuration could be found for this nickname. Add a
# NICKNAME_NOT_FOUND=... command to the configuration commands.
SERVER_CMDS+=("NICKNAME_NOT_FOUND=\"`quote_for_cmd "$target_NICKNAME"`\"")
}
# Process the -p flag.
process_p () {
local pid="$1"
# Are we managing a server with the given pid?
test ! -f "$STAT_PATH/$pid.stat" && echo "No stap-server running as pid $pid" && \
exit 1
# Add the configuration of the server running as $pid to SERVER_CMDS
interpret_server_status "$STAT_PATH/$pid.stat" || exit 1
add_server_commands
return 0
}
# Process the -r flag.
process_r () {
local first_char="${1:1:1}"
if test "$first_char" = "/"; then # fully specified path
local kernel_build_tree="$1"
local version_file_name="$kernel_build_tree/include/config/kernel.release"
# The file include/config/kernel.release within the kernel
# build tree is used to pull out the version information
local kernel_release=`cat $version_file_name 2>/dev/null`
if test "X$kernel_release" = "X"; then
echo "Missing $version_file_name"
return 1
fi
SERVER_CMDS+=("RELEASE+=(\"`quote_for_cmd "$1"`\")") # pass the path as-is
return 0
fi
# kernel release specified directly
SERVER_CMDS+=("RELEASE+=(\"`quote_for_cmd "$1"`\")")
return 0
}
load_config () {
# Include configs
if [ -f "$CONFIG_FILE" ]; then
interpret_config_file "$CONFIG_FILE"
fi
if [ -f "$OPT_CONFIG_FILE" ]; then
interpret_config_file "$OPT_CONFIG_FILE"
fi
}
# Default to the currently running kernel release
get_release () {
$UNAME -r
}
# Default to the currently running kernel release
get_arch () {
stap_get_arch
}
add_server_commands () {
# Add commands based on the current state to SERVER_CMDS
SERVER_CMDS+=("ARCH=\"`quote_for_cmd "$ARCH"`\"")
SERVER_CMDS+=("RELEASE=()")
for r in "${RELEASE[@]}"; do
SERVER_CMDS+=("RELEASE+=(\"`quote_for_cmd "$r"`\")")
done
SERVER_CMDS+=("RUNTIME=\"`quote_for_cmd "$RUNTIME"`\"")
SERVER_CMDS+=("DEFINE=()")
for d in "${DEFINE[@]}"; do
SERVER_CMDS+=("DEFINE+=(\"`quote_for_cmd "$d"`\")")
done
SERVER_CMDS+=("INCLUDE=()")
for i in "${INCLUDE[@]}"; do
SERVER_CMDS+=("INCLUDE+=(\"`quote_for_cmd "$i"`\")")
done
SERVER_CMDS+=("BUILD=()")
for b in "${BUILD[@]}"; do
SERVER_CMDS+=("BUILD+=(\"`quote_for_cmd "$b"`\")")
done
SERVER_CMDS+=("USER=\"`quote_for_cmd "$USER"`\"")
SERVER_CMDS+=("NICKNAME=\"`quote_for_cmd "$NICKNAME"`\"")
SERVER_CMDS+=("LOG=\"`quote_for_cmd "$LOG"`\"")
test -n "$PORT" && SERVER_CMDS+=("PORT=\"`quote_for_cmd "$PORT"`\"")
test -n "$SSL" && SERVER_CMDS+=("SSL=\"`quote_for_cmd "$SSL"`\"")
test -n "$MAXTHREADS" && SERVER_CMDS+=("MAXTHREADS=\"`quote_for_cmd "$MAXTHREADS"`\"")
test -n "$MAXREQSIZE" && SERVER_CMDS+=("MAXREQSIZE=\"`quote_for_cmd "$MAXREQSIZE"`\"")
test -n "$MAXCOMPRESSEDREQ" && SERVER_CMDS+=("MAXCOMPRESSEDREQ=\"`quote_for_cmd "$MAXCOMPRESSEDREQ"`\"")
}
echo_server_options () {
# Echo the current state.
echo -n "-a \"`quote_for_cmd "$ARCH"`\""
for r in "${RELEASE[@]}"; do
echo -n " -r \"`quote_for_cmd "$r"`\""
done
test -n "$RUNTIME" && echo -n " -R \"`quote_for_cmd "$RUNTIME"`\""
for d in "${DEFINE[@]}"; do
echo -n " -D \"`quote_for_cmd "$d"`\""
done
for i in "${INCLUDE[@]}"; do
echo -n " -I \"`quote_for_cmd "$i"`\""
done
for b in "${BUILD[@]}"; do
echo -n " -B \"`quote_for_cmd "$b"`\""
done
echo -n " -u \"`quote_for_cmd "$USER"`\""
test -n "$NICKNAME" && echo -n " -n \"`quote_for_cmd "$NICKNAME"`\""
echo -n " --log \"`quote_for_cmd "$LOG"`\""
test -n "$PORT" && echo -n " --port \"`quote_for_cmd "$PORT"`\""
test -n "$SSL" && echo -n " --ssl \"`quote_for_cmd "$SSL"`\""
test -n "$MAXTHREADS" && echo -n " --max-threads \"`quote_for_cmd "$MAXTHREADS"`\""
test -n "$MAXREQSIZE" && echo -n " --max-request-size \"`quote_for_cmd "$MAXREQSIZE"`\""
test -n "$MAXCOMPRESSEDREQ" && echo -n " --max-compressed-request \"`quote_for_cmd "$MAXCOMPRESSEDREQ"`\""
echo
}
prepare_stat_dir () {
if [ ! -d "$STAT_PATH" ]; then
logex mkdir -p "$STAT_PATH"
[ $? -ne 0 ] && return 1
fi
return 0
}
prepare_certs () {
if [ "$USER" != "`id -un`" ]; then
if ! runuser -s /bin/bash - $USER -c 'test -f $HOME/.systemtap/ssl/server/stap.cert'; then
runuser -s /bin/bash - $USER -c /usr/lib/systemtap/stap-gen-cert >/dev/null
fi
else
if ! test -f $HOME/.systemtap/ssl/server/stap.cert; then
/usr/lib/systemtap/stap-gen-cert
fi
fi
}
prepare_log_dir () {
local log_path=`dirname "$1"`
if [ ! -d "$log_path" ]; then
mkdir -p "$log_path"
[ $? -ne 0 ] && return 1
fi
return 0
}
init_server_opts () {
ARCH=`get_arch`
unset RELEASE
unset DEFINE
unset BUILD
unset INCLUDE
NICKNAME=
NICKNAME_NOT_FOUND=
RUNTIME=
USER=$STAP_USER
test -z "$USER" && USER=`id -un`
LOG=$LOG_FILE
PORT=
SSL=
MAXTHREADS=
MAXREQSIZE=
MAXCOMPRESSEDREQ=
}
# Double quotes, backslashes within generated command
# arguments must be quoted.
quote_for_cmd () {
echo "$1" | \
sed -e 's/\\/\\\\/g' \
-e 's/"/\\"/g'
}
# Interpret the contents of a global config file.
interpret_config_file () {
local config_file="$1"
# Save the results locally first, in case there is an error.
local local_CONFIG_PATH=
local local_STAT_PATH=
local local_LOG_FILE=
local local_STAP_USER=
local input
while read -r -u3 input
do
case "$input" in
CONFIG_PATH=*)
local_CONFIG_PATH="${input:12}"
;;
STAT_PATH=*)
local_STAT_PATH="${input:10}"
;;
LOG_FILE=*)
local_LOG_FILE="${input:9}"
;;
STAP_USER=*)
local_STAP_USER="${input:10}"
;;
\#*)
;; # Comment, do nothing
"")
;; # Empty line, do nothing
*)
echo $"Invalid input, \"$input\", in $config_file" >&2
exit 1
;;
esac
done 3< "$config_file"
# Now set the results globally
test -n "$local_CONFIG_PATH" && CONFIG_PATH="$local_CONFIG_PATH"
test -n "$local_STAT_PATH" && STAT_PATH="$local_STAT_PATH"
test -n "$local_LOG_FILE" && LOG_FILE="$local_LOG_FILE"
test -n "$local_STAP_USER" && STAP_USER="$local_STAP_USER"
}
# Interpret the contents of a server config file.
interpret_server_config () {
local config_file="$1"
# Save the results locally first, in case there is an error.
local local_ARCH=
local local_RELEASE=()
local local_DEFINE=()
local local_BUILD=()
local local_INCLUDE=()
local local_RUNTIME=
local local_USER=
local local_NICKNAME=
local local_LOG=
local local_PORT=
local local_SSL=
local local_MAXTHREADS=
local local_MAXREQSIZE=
local local_MAXCOMPRESSEDREQ=
local input
while read -r -u3 input
do
case "$input" in
ARCH=*)
local_ARCH="${input:5}"
;;
RELEASE=*)
if [ -z "${input:8}" -o "${input:8}" = "()" ]; then
local_RELEASE=()
else
local_RELEASE=("${input:8}")
fi
;;
RELEASE+=*)
test -z "${input:9}" -o "${input:9}" = "()" || \
local_RELEASE+=("${input:9}")
;;
DEFINE=*)
if [ -z "${input:7}" -o "${input:7}" = "()" ]; then
local_DEFINE=()
else
local_DEFINE=("${input:7}")
fi
;;
DEFINE+=*)
test -z "${input:8}" -o "${input:8}" = "()" || \
local_DEFINE+=("${input:8}")
;;
BUILD=*)
if [ -z "${input:6}" -o "${input:6}" = "()" ]; then
local_BUILD=()
else
local_BUILD=("${input:6}")
fi
;;
BUILD+=*)
test -z "${input:7}" -o "${input:7}" = "()" || \
local_BUILD+=("${input:7}")
;;
INCLUDE=*)
if [ -z "${input:8}" -o "${input:8}" = "()" ]; then
local_INCLUDE=()
else
local_INCLUDE=("${input:8}")
fi
;;
INCLUDE+=*)
test -z "${input:8}" -o "${input:8}" = "()" || \
local_INCLUDE+=("${input:9}")
;;
RUNTIME=*)
local_RUNTIME="${input:8}"
;;
USER=*)
local_USER="${input:5}"
;;
NICKNAME=*)
local_NICKNAME="${input:9}"
;;
LOG=*)
local_LOG="${input:4}"
;;
PORT=*)
local_PORT="${input:5}"
;;
SSL=*)
local_SSL="${input:4}"
;;
MAXTHREADS=*)
local_MAXTHREADS="${input:11}"
;;
MAXREQSIZE=*)
local_MAXREQSIZE="${input:11}"
;;
MAXCOMPRESSEDREQ=*)
local_MAXCOMPRESSEDREQ="${input:17}"
;;
\#*)
;; # Comment, do nothing
"")
;; # Empty line, do nothing
*)
echo $"Invalid input, \"$input\", in $config_file" >&2
exit 1
;;
esac
done 3< "$config_file"
# Now set the results globally. All variables are expected to be set, even
# if to nothing.
ARCH="$local_ARCH"
RELEASE=("${local_RELEASE[@]}")
DEFINE=("${local_DEFINE[@]}")
BUILD=("${local_BUILD[@]}")
INCLUDE=("${local_INCLUDE[@]}")
RUNTIME="$local_RUNTIME"
USER="$local_USER"
NICKNAME="$local_NICKNAME"
LOG="$local_LOG"
PORT="$local_PORT"
SSL="$local_SSL"
MAXTHREADS="$local_MAXTHREADS"
MAXREQSIZE="$local_MAXREQSIZE"
MAXCOMPRESSEDREQ="$local_MAXCOMPRESSEDREQ"
}
# Interpret the contents of a server status file.
interpret_server_status () {
# The contents of the server status files are currently the same as
# that of server config files.
interpret_server_config "$1"
}
# Load the default server config and add the results to SERVER_CMDS.
load_server_config () {
for f in "$CONFIG_PATH"/*.conf; do
if [ -f "$f" ]; then
# Obtain a configuration from each config file.
# Ensure that we get the correct defaults for items not specified.
local ARCH=
local DEFINE=()
local BUILD=()
local INCLUDE=()
local RUNTIME=
local USER=
local RELEASE=()
local LOG=
local PORT=
local SSL=
local MAXTHREADS=
local MAXREQSIZE=
local MAXCOMPRESSEDREQ=
interpret_server_config "$f" || continue
# Other options default to empty. These ones don't.
[ -z "$ARCH" ] && ARCH=`get_arch`
[ -z "$RELEASE" ] && RELEASE+=(`get_release`)
[ -z "$USER" ] && USER=$STAP_USER
[ -z "$USER" ] && USER=`id -un`
[ -z "$LOG" ] && LOG="$LOG_FILE"
add_server_commands
SERVER_CMDS+=("EXEC")
fi
done
}
server_still_running () { # PID
(ps -e | grep stap-serverd | grep -q $1) && return 0 # Still running
rm -f "$STAT_PATH/$1.stat"
return 1 # Not running
}
get_server_pid_by_config () {
# Need to save the config, since the process of checking the running
# servers alters it.
local target_ARCH="$ARCH"
local target_RELEASE=("${RELEASE[@]}")
local target_RUNTIME="$RUNTIME"
local target_INCLUDE=("${INCLUDE[@]}")
local target_BUILD=("${BUILD[@]}")
local target_DEFINE=("${DEFINE[@]}")
local target_USER="$USER"
local target_NICKNAME="$NICKNAME"
local target_LOG="$LOG"
local target_PORT="$PORT"
local target_SSL="$SSL"
local target_MAXTHREADS="$MAXTHREADS"
local target_MAXREQSIZE="$MAXREQSIZE"
local target_MAXCOMPRESSEDREQ="$MAXCOMPRESSEDREQ"
# Check the status file for each running server to see if it matches
# the one currently configured. We're checking for a given configuration,
# so don't compare the nickname.
for f in "$STAT_PATH"/*.stat; do
test ! -e "$f" && continue
interpret_server_status "$f" || continue
test "X$ARCH" = "X$target_ARCH" || continue
test "X$RELEASE" = "X$target_RELEASE" || continue
test "X$INCLUDE" = "X$target_INCLUDE" || continue
test "X$RUNTIME" = "X$target_RUNTIME" || continue
test "X$BUILD" = "X$target_BUILD" || continue
test "X$DEFINE" = "X$target_DEFINE" || continue
test "X$USER" = "X$target_USER" || continue
test "X$LOG" = "X$target_LOG" || continue
test "X$PORT" = "X$target_PORT" || continue
test "X$SSL" = "X$target_SSL" || continue
test "X$MAXTHREADS" = "X$target_MAXTHREADS" || continue
test "X$MAXREQSIZE" = "X$target_MAXREQSIZE" || continue
test "X$MAXCOMPRESSEDREQ" = "X$target_MAXCOMPRESSEDREQ" || continue
echo `basename "$f" | sed 's/.stat//'` # Server has a pid
return
done
ARCH="$target_ARCH"
RELEASE=("${target_RELEASE[@]}")
RUNTIME="$target_RUNTIME"
INCLUDE=("${target_INCLUDE[@]}")
BUILD=("${target_BUILD[@]}")
DEFINE=("${target_DEFINE[@]}")
USER="$target_USER"
NICKNAME="$target_NICKNAME"
LOG="$target_LOG"
PORT="$target_PORT"
SSL="$target_SSL"
MAXTHREADS="$target_MAXTHREADS"
MAXREQSIZE="$target_MAXREQSIZE"
MAXCOMPRESSEDREQ="$target_MAXCOMPRESSEDREQ"
}
get_server_pid_by_nickname () {
# No need to save the current configuration. This function is not called
# in a context requiring it.
local target_NICKNAME="$1"
# Check the status file for each running server to see if the nickname
# matches the one we want.
for f in "$STAT_PATH"/*.stat; do
test ! -e "$f" && continue
interpret_server_status "$f" || continue
test "X$NICKNAME" = "X$target_NICKNAME" || continue
echo `basename "$f" | sed 's/\.stat//'` # Server with nickname was found
return
done
}
managed_servers () {
if [ ! -d "$STAT_PATH" ]; then
echo ""
return 1
fi
cd "$STAT_PATH"
local list=`ls | sed 's/\.stat//'`
if [ -z "$list" ]; then
echo ""
return 1
fi
echo "$list"
}
eval_server_command () {
local cmd="$1"
eval $cmd
}
start_server () {
clog $"Starting $prog `echo_server_options`"
# Is there already a server running for the requested kernel release
# and arch?
local server_pid=`get_server_pid_by_config`
if test -n "$server_pid"; then
if server_still_running $server_pid; then
do_success $"$prog start `echo_server_options`"
return 0 # Success
fi
fi
# Create certificates for this server
prepare_certs
if [ $? -ne 0 ]; then
echo $"Failed to make certificates ($USER .systemtap/ssl/server/stap.cert)" >&2
exit 1
fi
# Create the log directory for this server
prepare_log_dir "$LOG"
if [ $? -ne 0 ]; then
echo $"Failed to make log directory (`dirname "$LOG"`)" >&2
exit 1
fi
# Construct the server start command.
local server_cmd="$STAP_START_SERVER -a \"`quote_for_cmd "$ARCH"`\" $OPT_OTHER"
for r in "${RELEASE[@]}"; do
server_cmd="$server_cmd -r \"`quote_for_cmd "$r"`\""
done
for b in "${BUILD[@]}"; do
server_cmd="$server_cmd -B \"`quote_for_cmd "$b"`\""
done
for i in "${INCLUDE[@]}"; do
server_cmd="$server_cmd -I \"`quote_for_cmd "$i"`\""
done
for d in "${DEFINE[@]}"; do
server_cmd="$server_cmd -D \"`quote_for_cmd "$d"`\""
done
test -n "$RUNTIME" && server_cmd="$server_cmd -R \"`quote_for_cmd "$RUNTIME"`\""
server_cmd="$server_cmd --log=\"`quote_for_cmd "$LOG"`\""
test -n "$PORT" && server_cmd="$server_cmd --port \"`quote_for_cmd "$PORT"`\""
test -n "$SSL" && server_cmd="$server_cmd --ssl \"`quote_for_cmd "$SSL"`\""
test -n "$MAXTHREADS" && server_cmd="$server_cmd --max-threads \"`quote_for_cmd "$MAXTHREADS"`\""
test -n "$MAXREQSIZE" && server_cmd="$server_cmd --max-request-size \"`quote_for_cmd "$MAXREQSIZE"`\""
test -n "$MAXCOMPRESSEDREQ" && server_cmd="$server_cmd --max-compressed-request \"`quote_for_cmd "$MAXCOMPRESSEDREQ"`\""
# Start the server here.
local pid
if [ "$USER" != "`id -un`" ]; then
pid=`runuser -s /bin/bash - $USER -c "$server_cmd"`
else
pid=`eval $server_cmd`
fi
if [ $? != 0 -o -z "$pid" ]; then
if [ -n "$pid" ]; then
rm -f "$STAT_PATH/$pid.stat"
fi
do_failure $"$prog start `echo_server_options`"
return 1 # Failure
fi
# Nickname defaults to the pid.
test -z "$NICKNAME" && NICKNAME="$pid"
# Write the configuration to the status file.
local server_status_file="$STAT_PATH/$pid.stat"
echo "ARCH=$ARCH" > "$server_status_file"
echo "USER=$USER" >> "$server_status_file"
for b in "${BUILD[@]}"; do
echo "BUILD+=$b" >> "$server_status_file"
done
for i in "${INCLUDE[@]}"; do
echo "INCLUDE+=$i" >> "$server_status_file"
done
for d in "${DEFINE[@]}"; do
echo "DEFINE+=$d" >> "$server_status_file"
done
echo "NICKNAME=$NICKNAME" >> "$server_status_file"
echo "RUNTIME=$RUNTIME" >> "$server_status_file"
for r in "${RELEASE[@]}"; do
echo "RELEASE+=$r" >> "$server_status_file"
done
echo "LOG=$LOG" >> "$server_status_file"
echo "PORT=$PORT" >> "$server_status_file"
echo "SSL=$SSL" >> "$server_status_file"
echo "MAXTHREADS=$MAXTHREADS" >> "$server_status_file"
echo "MAXREQSIZE=$MAXREQSIZE" >> "$server_status_file"
echo "MAXCOMPRESSEDREQ=$MAXCOMPRESSEDREQ" >> "$server_status_file"
do_success $"$prog start `echo_server_options`"
}
start () { # server-cmds
prepare_stat_dir
if [ $? -ne 0 ]; then
do_failure $"Failed to make stat directory ($STAT_PATH)"
return 1
fi
# Start the specified servers
local server_cmds=("$@")
# If none specified, start the configured servers
if [ -z "$server_cmds" ]; then
unset SERVER_CMDS
load_server_config
server_cmds=("${SERVER_CMDS[@]}")
# If none configured, start the default servers
if test -z "$server_cmds"; then
add_distributed_options
server_cmds=("${SERVER_CMDS[@]}")
server_cmds+=("EXEC")
fi
fi
# Start each requested server in turn
local rc=0
local first=1
init_server_opts
local cmd
local prevCmd
for cmd in "${server_cmds[@]}"; do
prevCmd="$cmd"
# Evaluate commands until the EXEC command is found.
if test "$cmd" != "EXEC"; then
eval_server_command "$cmd"
# A specified nickname only sticks if it is the final command.
# Otherwise, we have a configuration based on a nicknamed
# configuration.
echo "$cmd" | grep -q "^NICKNAME=" || NICKNAME=""
continue
fi
# If a nickname was specified, but the corresponding config was not found,
# then it is the nickname for this new configuration.
if test -n "$NICKNAME_NOT_FOUND"; then
NICKNAME="$NICKNAME_NOT_FOUND"
NICKNAME_NOT_FOUND=
fi
# Start the configured server
test $first = 0 && echo
first=0
start_server || rc=1
# Don't use the same nickname for the next server.
NICKNAME=
done
return $rc
}
stop () { # server-cmds
local first=1
local server_list=
local server_cmds=("$@")
if [ -n "$server_cmds" ]; then
# Get the pids of all the requested servers.
init_server_opts
local cmd
local prevCmd
for cmd in "${server_cmds[@]}"; do
prevCmd="$cmd"
# Evaluate commands until the EXEC command is found.
if test "$cmd" != "EXEC"; then
eval_server_command "$cmd"
# A specified nickname only sticks if it is the final command.
# Otherwise, we have a configuration based on a nicknamed
# configuration.
echo "$cmd" | grep -q "^NICKNAME=" || NICKNAME=""
continue
fi
# If a nickname was specified, but the corresponding config was not
# found, it is an error.
if test -n "$NICKNAME_NOT_FOUND"; then
clog "No configuration found for the nickname '$NICKNAME_NOT_FOUND'"
NICKNAME="$NICKNAME_NOT_FOUND"
do_failure $"$prog stop `echo_server_options`"
NICKNAME_NOT_FOUND=
rc=1
continue
fi
# Get the pid for this server, if it's running
local server_pid=`get_server_pid_by_config`
if test -n "$server_pid"; then
server_list="$server_list $server_pid"
continue
fi
# This server is not running, but give a success stop status anyway.
test $first = 0 && echo
first=0
clog $"Stopping $prog `echo_server_options`"
do_success $"$prog stop `echo_server_options`"
done
else
server_list=`managed_servers`
if [ -z "$server_list" ]; then
clog $"Stopping $prog: " -n
do_success $"$prog: No managed servers to stop"
return 0
fi
fi
# Stop each server in turn
local rc=0
local pid
for pid in $server_list; do
if ! interpret_server_status "$STAT_PATH/$pid.stat"; then
rc=1
continue
fi
test $first = 0 && echo
first=0
clog $"Stopping $prog `echo_server_options`"
local this_rc=0
if server_still_running $pid; then
if [ "$USER" != "`id -un`" ]; then
runuser -s /bin/bash - $USER -c "$STAP_STOP_SERVER $pid"
else
eval $STAP_STOP_SERVER $pid
fi
if [ $? != 0 ]; then
do_failure $"$prog stop `echo_server_options`"
this_rc=1
rc=1
fi
fi
if [ $this_rc = 0 ]; then
rm -f "$STAT_PATH/$pid.stat"
do_success $"$prog stop `echo_server_options`"
fi
done
return $rc
}
status () { # server-list
local rc=0
# Report status for the specified servers or all running servers, if none
# specified.
local server_list=
local server_cmds=("$@")
if [ -n "$server_cmds" ]; then
# Get the pids of all the requested servers.
init_server_opts
local cmd
local prevCmd
for cmd in "${server_cmds[@]}"; do
prevCmd="$cmd"
# Evaluate commands until the EXEC command is found.
if test "$cmd" != "EXEC"; then
eval_server_command "$cmd"
# A specified nickname only sticks if it is the final command.
# Otherwise, we have a configuration based on a nicknamed
# configuration.
echo "$cmd" | grep -q "^NICKNAME=" || NICKNAME=""
continue
fi
# If a nickname was specified, but the corresponding config was not
# found, say so.
if test -n "$NICKNAME_NOT_FOUND"; then
echo "No configuration found for the nickname '$NICKNAME_NOT_FOUND'"
NICKNAME_NOT_FOUND=
rc=3
continue
fi
# Get the pid for this server, if it's running
local server_pid=`get_server_pid_by_config`
if test -n "$server_pid"; then
server_list="$server_list $server_pid"
continue
fi
# This server is not running
echo "stap-server `echo_server_options` is not running"
rc=3
done
else
server_list=`managed_servers`
if [ -z "$server_list" ]; then
echo "No managed stap-server is running"
return 3
fi
fi
# Get status of each server in turn
local pid
for pid in $server_list; do
if ! interpret_server_status "$STAT_PATH/$pid.stat"; then
rc=1
continue
fi
if ! server_still_running $pid; then
echo "stap-server `echo_server_options` started as PID $pid is no longer running"
rc=1
continue
fi
echo "stap-server `echo_server_options` running as PID $pid"
done
return $rc
}
# Restart or start if not running
function restart () { # server-cmds
# Restart the specified servers or all servers, if none specified.
local rc=0
local server_cmds=("$@")
if [ -z "$server_cmds" ]; then
local server_list=`managed_servers`
local pid
for pid in $server_list; do
if ! interpret_server_status "$STAT_PATH/$pid.stat"; then
rc=1
continue
fi
unset SERVER_CMDS
add_server_commands
server_cmds+=("${SERVER_CMDS[@]}")
server_cmds+=("EXEC")
done
fi
# Stop the specified servers, or all if none specified
stop "${server_cmds[@]}" || rc=1
echo
# Restart the same servers. If none were specified then
# start the configured or default server(s)).
start "${server_cmds[@]}"
local this_rc=$?
[ $this_rc != 0 ] && rc=$this_rc
return $rc
}
# Restart only if running
function condrestart () { # server-list
# Restart the specified servers or all servers, if none specified,
# but only if they are already running.
local rc=0
local server_cmds=("$@")
if [ -z "$server_cmds" ]; then
local server_list=`managed_servers`
local pid
for pid in $server_list; do
if ! interpret_server_status "$STAT_PATH/$pid.stat"; then
rc=1
continue
fi
unset SERVER_CMDS
add_server_commands
server_cmds+=("${SERVER_CMDS[@]}")
server_cmds+=("EXEC")
done
# No server specified or running?
if [ -z "$server_cmds" ]; then
clog "No managed stap-server is running" -n
do_success "No managed stap-server is running"
return 0
fi
fi
# For each server in the list, stop it if it is running
local first=1
local this_server_cmds
local cmd
for cmd in "${server_cmds[@]}"; do
# Execute and collect commands until the EXEC command is found.
this_server_cmds+=("$cmd")
if test "$cmd" != "EXEC"; then
eval_server_command "$cmd"
continue
fi
test $first = 0 && echo
first=0
# Now see if this server is running
if ! status "${this_server_cmds[@]}" >/dev/null 2>&1; then
clog $"$prog `echo_server_options` is not running"
do_success "$prog `echo_server_options` is not running"
unset this_server_cmds
continue
fi
start_cmds+=("${this_server_cmds[@]}")
stop "${this_server_cmds[@]}"
this_rc=$?
[ $this_rc != 0 ] && rc=$this_rc
unset this_server_cmds
done
# Now restart the servers that were running
if [ -n "$start_cmds" ]; then
echo
start "${start_cmds[@]}"
local this_rc=$?
[ $this_rc != 0 ] && rc=$this_rc
fi
return $rc
}
#------------------------------------------------------------------
# Mainline script
#------------------------------------------------------------------
CMD=$1
shift 1
prepare_log_dir "$LOG_FILE"
if [ $? -ne 0 ]; then
echo $"Failed to make log directory (`dirname $LOG_FILE`)" >&2
exit 1
fi
OPTS=`getopt -s bash -u --options 'a:B:c:D:iI:n:p:kPr:R:u:' \
--longoptions 'log:' \
--longoptions 'port:' \
--longoptions 'ssl:' \
--longoptions 'max-threads:' \
--longoptions 'max-request-size:' \
--longoptions 'max-compressed-request:' \
-- "$@"`
if [ $? -ne 0 ]; then
echo "Error: Argument parse error: $@" >&2
echo_usage
exit 2
fi
# Initialize server specs
parse_args "$@" || exit 2
load_config
RETVAL=0
case $CMD in
start) # Start specified servers. If none specified, start configured servers
start "${SERVER_CMDS[@]}"
RETVAL=$?
;;
stop) # Stop specified servers
stop "${SERVER_CMDS[@]}"
RETVAL=$?
;;
restart) # Restart specified servers
restart "${SERVER_CMDS[@]}"
RETVAL=$?
;;
condrestart|try-restart) # Restart specified servers if they are running
condrestart "${SERVER_CMDS[@]}"
RETVAL=$?
;;
status) # Give status on specified servers
status "${SERVER_CMDS[@]}"
exit $?
;;
reload) # Reloading config without stop/restart is not supported
RETVAL=3
;;
force-reload) # Reload config with stop/start
# stop all running servers
stop
echo
# Restart specified servers
# If none specified, restart configured servers
start "${SERVER_CMDS[@]}"
RETVAL=$?
;;
usage|*)
echo_usage
RETVAL=0
;;
esac
echo
exit $RETVAL
|