pristine/SOURCES/abrt-ccpp.init

#!/bin/bash
# Install abrt coredump hook
#
# chkconfig: 35 82 16
# description: Installs coredump handler which saves segfault data
### BEGIN INIT INFO
# Provides: abrt-ccpp
# Required-Start: $abrtd
# Required-Stop: $abrtd
# Default-Stop: 0 1 2 6
# Default-Start: 3 5
# Short-Description: Installs coredump handler which saves segfault data
# Description: Installs coredump handler which saves segfault data
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

# For debugging
dry_run=false
verbose=false

# We don't have pid files, therefore have to use
# a flag file in /var/lock/subsys to enable GUI service tools
# to figure out our status
LOCK="/var/lock/subsys/abrt-ccpp"

PATTERN_FILE="/proc/sys/kernel/core_pattern"
SAVED_PATTERN_FILE="/var/run/abrt/saved_core_pattern"
HOOK_BIN="@libexec@/abrt-hook-ccpp"
PATTERN="|$HOOK_BIN /var/spool/abrt %s %c %p %u %g %t %h %e"

# core_pipe_limit specifies how many dump_helpers can run at the same time
# 0 - means unlimited, but it's not guaranteed that /proc/<pid> of crashing
#     process will be available for dump_helper.
# 4 - means that 4 dump_helpers can run at the same time (the rest will also
#     run, but they will fail to read /proc/<pid>).
#
# This should be enough for ABRT, we can miss some crashes, but what are
# the odds that more processes crash at the same time? And moreover,
# do people want to save EVERY ONE of the crashes when they have
# a crash storm? I don't think so.
# The value of 4 has been recommended by nhorman.
#
CORE_PIPE_LIMIT_FILE="/proc/sys/kernel/core_pipe_limit"
CORE_PIPE_LIMIT="4"

RETVAL=0

check() {
        # Check that we're a privileged user
        [ "`id -u`" = 0 ] || exit 4
}

start() {
        check

        cur=`cat "$PATTERN_FILE"`
        cur_first=`printf "%s" "$cur" | sed 's/ .*//'`

        $verbose && printf "cur:'%s'\n" "$cur"
        # Is it already installed?
        if test x"$cur_first" != x"|$HOOK_BIN"; then   # no
                # It is not installed
                printf "%s\n" "$cur" >"$SAVED_PATTERN_FILE"
                OLD_PATTERN=""
                # Does old pattern start with '|'?
                if test x"${cur#|}" = x"$cur"; then   # no
                        # Encode it as hex string, NUL terminated
                        OLD_PATTERN=`printf "%s" "$cur" | od -tx1 | sed 's/000[^ ]*//' | xargs | sed 's/ //g'`
                        $verbose && printf "OLD_PATTERN:'%s'\n" "$OLD_PATTERN"
                        OLD_PATTERN=" ${OLD_PATTERN}00"
                fi
                # Install new handler
                $verbose && printf "Installing to %s:'%s'\n" "$PATTERN_FILE" "${PATTERN}${OLD_PATTERN}"
                $dry_run || echo "${PATTERN}${OLD_PATTERN}" >"$PATTERN_FILE"
                $dry_run || touch -- "$LOCK"

                # Check core_pipe_limit and change it if it's 0,
                # otherwise the abrt-hook-ccpp won't be able to read /proc/<pid>
                # of the crashing process
                if test x"`cat "$CORE_PIPE_LIMIT_FILE"`" = x"0"; then
                        echo "$CORE_PIPE_LIMIT" >"$CORE_PIPE_LIMIT_FILE"
                fi
        fi
        return $RETVAL
}

stop() {
        check

        if test -f "$SAVED_PATTERN_FILE"; then
                $verbose && printf "Restoring to %s:'%s'\n" "$PATTERN_FILE" "`cat "$SAVED_PATTERN_FILE"`"
                $dry_run || cat "$SAVED_PATTERN_FILE" >"$PATTERN_FILE"
        fi
        $dry_run || rm -f -- "$LOCK"
        return $RETVAL
}

restart() {
        stop
        start
}

reload() {
        restart
}

case "$1" in
start)
        start
        ;;
stop)
        stop
        ;;
reload)
        reload
        ;;
force-reload)
        echo "$0: Unimplemented feature."
        RETVAL=3
        ;;
restart)
        restart
        ;;
condrestart)
        cur=`cat "$PATTERN_FILE"`
        cur_first=`printf "%s" "$cur" | sed 's/ .*//'`
        # Is it already installed?
        if test x"$cur_first" = x"|$HOOK_BIN"; then   # yes
                $verbose && printf "Installed, re-installing\n"
                restart
        fi
        ;;
status)
        cur=`cat "$PATTERN_FILE"`
        cur_first=`printf "%s" "$cur" | sed 's/ .*//'`
        # Is it already installed?
        if test x"$cur_first" = x"|$HOOK_BIN"; then   # yes
                $verbose && printf "Installed\n"
                RETVAL=0
        else
                $verbose && printf "Not installed\n"
                RETVAL=3  # "stopped normally"
        fi
        ;;
*)
        echo $"Usage: $0 {start|stop|status|restart|condrestart|reload|force-reload}"
        RETVAL=2
esac

exit $RETVAL

1	dmorgan	109812	#!/bin/bash
2			# Install abrt coredump hook
3			#
4			# chkconfig: 35 82 16
5			# description: Installs coredump handler which saves segfault data
6			### BEGIN INIT INFO
7			# Provides: abrt-ccpp
8			# Required-Start: $abrtd
9	dmorgan	134966	# Required-Stop: $abrtd
10	dmorgan	109812	# Default-Stop: 0 1 2 6
11			# Default-Start: 3 5
12			# Short-Description: Installs coredump handler which saves segfault data
13			# Description: Installs coredump handler which saves segfault data
14			### END INIT INFO
15
16			# Source function library.
17			. /etc/rc.d/init.d/functions
18
19			# For debugging
20			dry_run=false
21			verbose=false
22
23			# We don't have pid files, therefore have to use
24			# a flag file in /var/lock/subsys to enable GUI service tools
25			# to figure out our status
26			LOCK="/var/lock/subsys/abrt-ccpp"
27
28			PATTERN_FILE="/proc/sys/kernel/core_pattern"
29			SAVED_PATTERN_FILE="/var/run/abrt/saved_core_pattern"
30	dmorgan	134959	HOOK_BIN="@libexec@/abrt-hook-ccpp"
31	dmorgan	109812	PATTERN="\|$HOOK_BIN /var/spool/abrt %s %c %p %u %g %t %h %e"
32
33			# core_pipe_limit specifies how many dump_helpers can run at the same time
34			# 0 - means unlimited, but it's not guaranteed that /proc/<pid> of crashing
35			# process will be available for dump_helper.
36			# 4 - means that 4 dump_helpers can run at the same time (the rest will also
37			# run, but they will fail to read /proc/<pid>).
38			#
39			# This should be enough for ABRT, we can miss some crashes, but what are
40			# the odds that more processes crash at the same time? And moreover,
41			# do people want to save EVERY ONE of the crashes when they have
42			# a crash storm? I don't think so.
43			# The value of 4 has been recommended by nhorman.
44			#
45			CORE_PIPE_LIMIT_FILE="/proc/sys/kernel/core_pipe_limit"
46			CORE_PIPE_LIMIT="4"
47
48			RETVAL=0
49
50			check() {
51			# Check that we're a privileged user
52			[ "`id -u`" = 0 ] \|\| exit 4
53			}
54
55			start() {
56			check
57
58			cur=`cat "$PATTERN_FILE"`
59			cur_first=`printf "%s" "$cur" \| sed 's/ .*//'`
60
61			$verbose && printf "cur:'%s'\n" "$cur"
62			# Is it already installed?
63			if test x"$cur_first" != x"\|$HOOK_BIN"; then # no
64			# It is not installed
65			printf "%s\n" "$cur" >"$SAVED_PATTERN_FILE"
66			OLD_PATTERN=""
67			# Does old pattern start with '\|'?
68			if test x"${cur#\|}" = x"$cur"; then # no
69			# Encode it as hex string, NUL terminated
70			OLD_PATTERN=`printf "%s" "$cur" \| od -tx1 \| sed 's/000[^ ]*//' \| xargs \| sed 's/ //g'`
71			$verbose && printf "OLD_PATTERN:'%s'\n" "$OLD_PATTERN"
72			OLD_PATTERN=" ${OLD_PATTERN}00"
73			fi
74			# Install new handler
75			$verbose && printf "Installing to %s:'%s'\n" "$PATTERN_FILE" "${PATTERN}${OLD_PATTERN}"
76			$dry_run \|\| echo "${PATTERN}${OLD_PATTERN}" >"$PATTERN_FILE"
77			$dry_run \|\| touch -- "$LOCK"
78
79			# Check core_pipe_limit and change it if it's 0,
80			# otherwise the abrt-hook-ccpp won't be able to read /proc/<pid>
81			# of the crashing process
82			if test x"`cat "$CORE_PIPE_LIMIT_FILE"`" = x"0"; then
83			echo "$CORE_PIPE_LIMIT" >"$CORE_PIPE_LIMIT_FILE"
84			fi
85			fi
86			return $RETVAL
87			}
88
89			stop() {
90			check
91
92			if test -f "$SAVED_PATTERN_FILE"; then
93			$verbose && printf "Restoring to %s:'%s'\n" "$PATTERN_FILE" "`cat "$SAVED_PATTERN_FILE"`"
94			$dry_run \|\| cat "$SAVED_PATTERN_FILE" >"$PATTERN_FILE"
95			fi
96			$dry_run \|\| rm -f -- "$LOCK"
97			return $RETVAL
98			}
99
100			restart() {
101			stop
102			start
103			}
104
105			reload() {
106			restart
107			}
108
109			case "$1" in
110			start)
111			start
112			;;
113			stop)
114			stop
115			;;
116			reload)
117			reload
118			;;
119			force-reload)
120			echo "$0: Unimplemented feature."
121			RETVAL=3
122			;;
123			restart)
124			restart
125			;;
126			condrestart)
127			cur=`cat "$PATTERN_FILE"`
128			cur_first=`printf "%s" "$cur" \| sed 's/ .*//'`
129			# Is it already installed?
130			if test x"$cur_first" = x"\|$HOOK_BIN"; then # yes
131			$verbose && printf "Installed, re-installing\n"
132			restart
133			fi
134			;;
135			status)
136			cur=`cat "$PATTERN_FILE"`
137			cur_first=`printf "%s" "$cur" \| sed 's/ .*//'`
138			# Is it already installed?
139			if test x"$cur_first" = x"\|$HOOK_BIN"; then # yes
140			$verbose && printf "Installed\n"
141			RETVAL=0
142			else
143			$verbose && printf "Not installed\n"
144			RETVAL=3 # "stopped normally"
145			fi
146			;;
147			*)
148			echo $"Usage: $0 {start\|stop\|status\|restart\|condrestart\|reload\|force-reload}"
149			RETVAL=2
150			esac
151
152			exit $RETVAL
153