aboutsummaryrefslogtreecommitdiffstats
path: root/rc.d/init.d/functions
blob: 2e9573d60dfbbed20627c324a86826bfa48d5e8e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
# -*-Shell-script-*-
#
# functions	This file contains functions to be used by most or all
#		shell scripts in the /etc/init.d directory.
#

TEXTDOMAIN=initscripts

# Make sure umask is sane
umask 022

# Set up a default search path.
PATH="/sbin:/usr/sbin:/bin:/usr/bin"
export PATH

# Get a sane screen width
[ -z "${COLUMNS:-}" ] && COLUMNS=80

[ -z "${CONSOLETYPE:-}" ] && CONSOLETYPE="`/sbin/consoletype`"

if [ -f /etc/sysconfig/i18n -a -z "${NOLOCALE:-}" ] ; then
  . /etc/sysconfig/i18n
  if [ "$CONSOLETYPE" != "pty" ]; then
	case "${LANG:-}" in
		ja_JP*|ko_KR*|zh_CN*|zh_TW*|bn_*|bd_*|pa_*|hi_*|ta_*|gu_*)
			export LC_MESSAGES=en_US
			export LANG
			;;
		*)
			export LANG
			;;
	esac
  else
  	[ -n "${LC_MESSAGES:-}" ] && export LC_MESSAGES
	export LANG
  fi
fi

# Read in our configuration
if [ -z "${BOOTUP:-}" ]; then
  if [ -f /etc/sysconfig/init ]; then
      . /etc/sysconfig/init
  else
    # This all seem confusing? Look in /etc/sysconfig/init,
    # or in /usr/doc/initscripts-*/sysconfig.txt
    BOOTUP=color
    RES_COL=60
    MOVE_TO_COL="echo -en \\033[${RES_COL}G"
    SETCOLOR_SUCCESS="echo -en \\033[1;32m"
    SETCOLOR_FAILURE="echo -en \\033[1;31m"
    SETCOLOR_WARNING="echo -en \\033[1;33m"
    SETCOLOR_NORMAL="echo -en \\033[0;39m"
    LOGLEVEL=1
  fi
  if [ "$CONSOLETYPE" = "serial" ]; then
      BOOTUP=serial
      MOVE_TO_COL=
      SETCOLOR_SUCCESS=
      SETCOLOR_FAILURE=
      SETCOLOR_WARNING=
      SETCOLOR_NORMAL=
  fi
fi

if [ "${BOOTUP:-}" != "verbose" ]; then
   INITLOG_ARGS="-q"
else
   INITLOG_ARGS=
fi

# Interpret escape sequences in an fstab entry
fstab_decode_str() {
	fstab-decode echo "$1"
}

# Check if $pid (could be plural) are running
checkpid() {
	local i

	for i in $* ; do
		[ -d "/proc/$i" ] && return 0
	done
	return 1
}

# __umount_loop awk_program fstab_file first_msg retry_msg umount_args
# awk_program should process fstab_file and return a list of fstab-encoded
# paths; it doesn't have to handle comments in fstab_file.
__umount_loop() {
	local remaining sig=
	local retry=3

	remaining=$(LC_ALL=C awk "/^#/ {next} $1" "$2" | sort -r)
	while [ -n "$remaining" -a "$retry" -gt 0 ]; do
		if [ "$retry" -eq 3 ]; then
			action "$3" fstab-decode umount $5 $remaining
		else
			action "$4" fstab-decode umount $5 $remaining
		fi
		sleep 2
		remaining=$(LC_ALL=C awk "/^#/ {next} $1" "$2" | sort -r)
		[ -z "$remaining" ] && break
		fstab-decode /sbin/fuser -k -m $sig $remaining >/dev/null
		sleep 5
		retry=$(($retry -1))
		sig=-9
	done
}

# Similar to __umount loop above, specialized for loopback devices
__umount_loopback_loop() {
	local remaining devremaining sig=
	local retry=3

	remaining=$(awk '$1 ~ /^\/dev\/loop/ && $2 != "/" {print $2}' /proc/mounts)
	devremaining=$(awk '$1 ~ /^\/dev\/loop/ && $2 != "/" {print $1}' /proc/mounts)
	while [ -n "$remaining" -a "$retry" -gt 0 ]; do
		if [ "$retry" -eq 3 ]; then
			action $"Unmounting loopback filesystems: " \
				fstab-decode umount $remaining
		else
			action $"Unmounting loopback filesystems (retry):" \
				fstab-decode umount $remaining
		fi
		for dev in $devremaining ; do
			losetup $dev > /dev/null 2>&1 && \
				action $"Detaching loopback device $dev: " \
				losetup -d $dev
		done
		remaining=$(awk '$1 ~ /^\/dev\/loop/ && $2 != "/" {print $2}' /proc/mounts)
		devremaining=$(awk '$1 ~ /^\/dev\/loop/ && $2 != "/" {print $1}' /proc/mounts)
		[ -z "$remaining" ] && break
		fstab-decode /sbin/fuser -k -m $sig $remaining >/dev/null
		sleep 5
		retry=$(($retry -1))
		sig=-9
	done
}

# __proc_pids {program} [pidfile]
# Set $pid to pids from /var/run* for {program}.  $pid should be declared
# local in the caller.
# Returns LSB exit code for the 'status' action.
__pids_var_run() {
	local base=${1##*/}
	local pid_file=${2:-/var/run/$base.pid}

	pid=
	if [ -f "$pid_file" ] ; then
	        local line p
		read line < "$pid_file"
		for p in $line ; do
			[ -z "${p//[0-9]/}" -a -d "/proc/$p" ] && pid="$pid $p"
		done
	        if [ -n "$pid" ]; then
	                return 0
	        fi
		return 1 # "Program is dead and /var/run pid file exists"
	fi
	return 3 # "Program is not running"
}

# Output PIDs of matching processes, found using pidof
__pids_pidof() {
	pidof -c -o $$ -o $PPID -o %PPID -x "$1" || \
		pidof -c -o $$ -o $PPID -o %PPID -x "${1##*/}"
}


# A function to start a program.
daemon() {
	# Test syntax.
	local gotbase= force= nicelevel corelimit
	local pid base= user= nice= bg= pid_file=
	nicelevel=0
	while [ "$1" != "${1##[-+]}" ]; do
	  case $1 in
	    '')    echo $"$0: Usage: daemon [+/-nicelevel] {program}"
	           return 1;;
	    --check)
		   base=$2
		   gotbase="yes"
		   shift 2
		   ;;
	    --check=?*)
	    	   base=${1#--check=}
		   gotbase="yes"
		   shift
		   ;;
	    --user)
		   user=$2
		   shift 2
		   ;;
	    --user=?*)
	           user=${1#--user=}
		   shift
		   ;;
	    --pidfile)
		   pid_file=$2
		   shift 2
		   ;;
	    --pidfile=?*)
		   pid_file=${$1#--pidfile=}
		   shift
		   ;;
	    --force)
	    	   force="force"
		   shift
		   ;;
	    [-+][0-9]*)
	    	   nice="nice -n $1"
	           shift
		   ;;
	    *)     echo $"$0: Usage: daemon [+/-nicelevel] {program}"
	           return 1;;
	  esac
	done

        # Save basename.
        [ -z "$gotbase" ] && base=${1##*/}

        # See if it's already running. Look *only* at the pid file.
	__pids_var_run "$base" "$pid_file"

	[ -n "$pid" -a -z "$force" ] && return

	# make sure it doesn't core dump anywhere unless requested
	corelimit="ulimit -S -c ${DAEMON_COREFILE_LIMIT:-0}"
	
	# if they set NICELEVEL in /etc/sysconfig/foo, honor it
	[ -n "${NICELEVEL:-}" ] && nice="nice -n $NICELEVEL"
	
	# Echo daemon
        [ "${BOOTUP:-}" = "verbose" -a -z "${LSB:-}" ] && echo -n " $base"

	# And start it up.
	if [ -z "$user" ]; then
	   $nice /bin/bash -c "$corelimit >/dev/null 2>&1 ; $*"
	else
	   $nice runuser -s /bin/bash - $user -c "$corelimit >/dev/null 2>&1 ; $*"
	fi
	[ "$?" -eq 0 ] && success $"$base startup" || failure $"$base startup"
}

# A function to stop a program.
killproc() {
	local RC killlevel= base pid pid_file=

	RC=0
	# Test syntax.
	if [ "$#" -eq 0 ]; then
		echo $"Usage: killproc [-p pidfile] {program} [-signal]"
		return 1
	fi
	if [ "$1" = "-p" ]; then
		pid_file=$2
		shift 2
	fi

	# check for second arg to be kill level
	[ -n "${2:-}" ] && killlevel=$2

        # Save basename.
        base=${1##*/}

        # Find pid.
	__pids_var_run "$1" "$pid_file"
	if [ -z "$pid_file" -a -z "$pid" ]; then
		pid="$(__pids_pidof "$1")"
	fi

        # Kill it.
        if [ -n "$pid" ] ; then
                [ "$BOOTUP" = "verbose" -a -z "${LSB:-}" ] && echo -n "$base "
		if [ -z "$killlevel" ] ; then
		       if checkpid $pid 2>&1; then
			   # TERM first, then KILL if not dead
			   kill -TERM $pid >/dev/null 2>&1
			   usleep 100000
			   if checkpid $pid && sleep 1 &&
			      checkpid $pid && sleep 3 &&
			      checkpid $pid ; then
                                kill -KILL $pid >/dev/null 2>&1
				usleep 100000
			   fi
		        fi
			checkpid $pid
			RC=$?
			[ "$RC" -eq 0 ] && failure $"$base shutdown" || success $"$base shutdown"
			RC=$((! $RC))
		# use specified level only
		else
		        if checkpid $pid; then
	                	kill $killlevel $pid >/dev/null 2>&1
				RC=$?
				[ "$RC" -eq 0 ] && success $"$base $killlevel" || failure $"$base $killlevel"
			elif [ -n "${LSB:-}" ]; then
				RC=7 # Program is not running
			fi
		fi
	else
		if [ -n "${LSB:-}" -a -n "$killlevel" ]; then
			RC=7 # Program is not running
		else
			failure $"$base shutdown"
			RC=0
		fi
	fi

        # Remove pid file if any.
	if [ -z "$killlevel" ]; then
            rm -f "${pid_file:-/var/run/$base.pid}"
	fi
	return $RC
}

# A function to find the pid of a program. Looks *only* at the pidfile
pidfileofproc() {
	local pid

	# Test syntax.
	if [ "$#" = 0 ] ; then
		echo $"Usage: pidfileofproc {program}"
		return 1
	fi

	__pids_var_run "$1"
	[ -n "$pid" ] && echo $pid
	return 0
}

# A function to find the pid of a program.
pidofproc() {
	local RC pid pid_file=

	# Test syntax.
	if [ "$#" = 0 ]; then
		echo $"Usage: pidofproc [-p pidfile] {program}"
		return 1
	fi
	if [ "$1" = "-p" ]; then
		pid_file=$2
		shift 2
	fi
	fail_code=3 # "Program is not running"

	# First try "/var/run/*.pid" files
	__pids_var_run "$1" "$pid_file"
	RC=$?
	if [ -n "$pid" ]; then
		echo $pid
		return 0
	fi

	[ -n "$pid_file" ] && return $RC
	__pids_pidof "$1" || return $RC
}

status() {
	local base pid pid_file=

	# Test syntax.
	if [ "$#" = 0 ] ; then
		echo $"Usage: status [-p pidfile] {program}"
		return 1
	fi
	if [ "$1" = "-p" ]; then
		pid_file=$2
		shift 2
	fi
	base=${1##*/}

	# First try "pidof"
	pid="$(__pids_pidof "$1")"
	if [ -n "$pid" ]; then
	        echo $"${base} (pid $pid) is running..."
	        return 0
	fi

	# Next try "/var/run/*.pid" files
	__pids_var_run "$1" "$pid_file"
	case "$?" in
		0)
			echo $"${base} (pid $pid) is running..."
			return 0
			;;
		1)
	                echo $"${base} dead but pid file exists"
	                return 1
			;;
	esac
	# See if /var/lock/subsys/${base} exists
	if [ -f /var/lock/subsys/${base} ]; then
		echo $"${base} dead but subsys locked"
		return 2
	fi
	echo $"${base} is stopped"
	return 3
}

echo_success() {
  [ "$BOOTUP" = "color" ] && $MOVE_TO_COL
  echo -n "["
  [ "$BOOTUP" = "color" ] && $SETCOLOR_SUCCESS
  echo -n $"  OK  "
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo -n "]"
  echo -ne "\r"
  return 0
}

echo_failure() {
  [ "$BOOTUP" = "color" ] && $MOVE_TO_COL
  echo -n "["
  [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
  echo -n $"FAILED"
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo -n "]"
  echo -ne "\r"
  return 1
}

echo_passed() {
  [ "$BOOTUP" = "color" ] && $MOVE_TO_COL
  echo -n "["
  [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
  echo -n $"PASSED"
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo -n "]"
  echo -ne "\r"
  return 1
}

echo_warning() {
  [ "$BOOTUP" = "color" ] && $MOVE_TO_COL
  echo -n "["
  [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
  echo -n $"WARNING"
  [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
  echo -n "]"
  echo -ne "\r"
  return 1
}

# Inform the graphical boot of our current state
update_boot_stage() {
  if [ "$GRAPHICAL" = "yes" -a -x /usr/bin/rhgb-client ]; then
    /usr/bin/rhgb-client --update="$1"
  fi
  return 0
}

# Log that something succeeded
success() {
  #if [ -z "${IN_INITLOG:-}" ]; then
  #   initlog $INITLOG_ARGS -n $0 -s "$1" -e 1
  #fi
  [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_success
  return 0
}

# Log that something failed
failure() {
  local rc=$?
  #if [ -z "${IN_INITLOG:-}" ]; then
  #   initlog $INITLOG_ARGS -n $0 -s "$1" -e 2
  #fi
  [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_failure
  [ -x /usr/bin/rhgb-client ] && /usr/bin/rhgb-client --details=yes
  [ -w /var/gdm/.gdmfifo ] && echo "BOOTUP_ERRORS" > /var/gdm/.gdmfifo &
  return $rc
}

# Log that something passed, but may have had errors. Useful for fsck
passed() {
  local rc=$?
  #if [ -z "${IN_INITLOG:-}" ]; then
  #   initlog $INITLOG_ARGS -n $0 -s "$1" -e 1
  #fi
  [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_passed
  return $rc
}  

# Log a warning
warning() {
  local rc=$?
  #if [ -z "${IN_INITLOG:-}" ]; then
  #   initlog $INITLOG_ARGS -n $0 -s "$1" -e 1
  #fi
  [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_warning
  return $rc
}  

# Run some action. Log its output.
action() {
  local STRING rc

  STRING=$1
  echo -n "$STRING "
  if [ "${RHGB_STARTED:-}" != "" -a -w /etc/rhgb/temp/rhgb-console ]; then
      echo -n "$STRING " > /etc/rhgb/temp/rhgb-console
  fi
  shift
  "$@" && success $"$STRING" || failure $"$STRING"
  rc=$?
  echo
  if [ "${RHGB_STARTED:-}" != "" -a -w /etc/rhgb/temp/rhgb-console ]; then
      if [ "$rc" = "0" ]; then
      	echo_success > /etc/rhgb/temp/rhgb-console
      else
        echo_failure > /etc/rhgb/temp/rhgb-console
	[ -x /usr/bin/rhgb-client ] && /usr/bin/rhgb-client --details=yes
      fi
      echo
  fi
  return $rc
}

# returns OK if $1 contains $2
strstr() {
  [ "${1#*$2*}" = "$1" ] && return 1
  return 0
}

# Confirm whether we really want to run this service
confirm() {
  [ -x /usr/bin/rhgb-client ] && /usr/bin/rhgb-client --details=yes
  while : ; do 
      echo -n $"Start service $1 (Y)es/(N)o/(C)ontinue? [Y] "
      read answer
      if strstr $"yY" "$answer" || [ "$answer" = "" ] ; then
         return 0
      elif strstr $"cC" "$answer" ; then
	 rm -f /var/run/confirm
	 [ -x /usr/bin/rhgb-client ] && /usr/bin/rhgb-client --details=no
         return 2
      elif strstr $"nN" "$answer" ; then
         return 1
      fi
  done
}

# resolve a device node to its major:minor numbers in decimal or hex
get_numeric_dev() {
(
    fmt="%d:%d"
    if [ "$1" == "hex" ]; then
        fmt="%x:%x"
    fi
    ls -l "$2" | awk '{ sub(/,/, "", $5); printf("'"$fmt"'", $5, $6); }'
) 2>/dev/null
}

# find the working name for a running dm device with the same table as one
# that dmraid would create
resolve_dm_name() {
(
    name="$1"

    line=$(/sbin/dmraid -ay -t --ignorelocking | egrep -iv "no block devices found|No RAID disks" | awk -F ':' "{ if (\$1 ~ /^$name$/) { print \$2; }}")
    newline=$line
    for x in $line ; do
        if [[ "$x" =~ "^/dev/" ]] ; then
            majmin=$(get_numeric_dev dec $x)
            newline=$(echo $newline | sed -e "s,$x\( \|$\),$majmin\1,g")
        fi
    done
    /sbin/dmsetup table | egrep -iv "no block devices found|No devices found" | sed -n "s/\(^[^:]\+\): $newline\( \+$\|$\)/\1/p"
) 2>/dev/null
}