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