[1c48007] | 1 | # Begin /lib/lsb/init-funtions
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| 2 |
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| 3 | # Provides initialization funtions as defined by the Linux Standard Base
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| 4 | # specification, version 3.1.0
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| 5 |
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| 6 | # Source rc configuration if not inherited from the environment
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| 7 | if [ "${RC_BASE}" = "" ]; then
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| 8 | . /etc/sysconfig/rc
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| 9 | fi
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| 10 |
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| 11 | # Source the distro functions file
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| 12 | if [ "${DISTRO_MINI}" != "" ]; then
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| 13 | . "${RC_BASE}/init.d/${DISTRO_MINI}-functions"
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| 14 | fi
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| 15 |
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| 16 | ################################################################################
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| 17 | # start_daemon() #
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| 18 | # Usage: start_daemon [-f] [-n nicelevel] [-p pidfile] pathname [args...] #
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| 19 | # #
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| 20 | # Purpose: This runs the specified program as a daemon #
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| 21 | # #
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| 22 | # Inputs: -f: (force) run the program even if it is already running. #
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| 23 | # -n nicelevel: specify a nice level. See 'man nice(1)'. #
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| 24 | # -p pidfile: use the specified file to determine PIDs. #
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| 25 | # pathname: the complete path to the specified program #
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| 26 | # args: additional arguments passed to the program (pathname) #
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| 27 | # #
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| 28 | # Return values (as defined by LSB exit codes): #
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| 29 | # 0 - program is running or service is OK #
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| 30 | # 1 - generic or unspecified error #
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| 31 | # 2 - invalid or excessive argument(s) #
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| 32 | # 5 - program is not installed #
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| 33 | ################################################################################
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| 34 | start_daemon()
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| 35 | {
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| 36 | local force=""
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| 37 | local nice="0"
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| 38 | local pidfile=""
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| 39 | local pidlist=""
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| 40 | local retval=""
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| 41 |
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| 42 | # Process arguments
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| 43 | while true
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| 44 | do
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| 45 | case "${1}" in
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| 46 |
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| 47 | -f)
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| 48 | force="1"
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| 49 | shift 1
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| 50 | ;;
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| 51 |
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| 52 | -n)
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| 53 | nice="${2}"
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| 54 | shift 2
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| 55 | ;;
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| 56 |
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| 57 | -p)
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| 58 | pidfile="${2}"
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| 59 | shift 2
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| 60 | ;;
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| 61 |
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| 62 | -*)
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| 63 | return 2
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| 64 | ;;
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| 65 |
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| 66 | *)
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| 67 | program="${1}"
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| 68 | break
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| 69 | ;;
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| 70 | esac
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| 71 | done
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| 72 |
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| 73 | # Check for a valid program
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| 74 | if [ ! -e "${program}" ]
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| 75 | then
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| 76 | return 5
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| 77 | fi
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| 78 |
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| 79 | # Execute
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| 80 | if [ -z "${force}" ]
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| 81 | then
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| 82 | if [ -z "${pidfile}" ]
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| 83 | then
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| 84 | # determine the pid by discovery
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| 85 | pidlist=`pidofproc "${1}"`
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| 86 | retval="${?}"
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| 87 | else
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| 88 | # The PID file contains the needed PIDs
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| 89 | # Note that by LSB requirement, the path must be given to pidofproc,
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| 90 | # however, it is not used by the current implementation or standard.
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| 91 | pidlist=`pidofproc -p "${pidfile}" "${1}"`
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| 92 | retval="${?}"
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| 93 | fi
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| 94 |
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| 95 | # return a value ONLY
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| 96 | # It is the init script's (or distribution's functions) responsibilty
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| 97 | # to log messages!
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| 98 | case "${retval}" in
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| 99 |
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| 100 | 0)
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| 101 | # program is already running correctly, this is a
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| 102 | # succesful start.
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| 103 | return 0
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| 104 | ;;
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| 105 |
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| 106 | 1)
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| 107 | # program is not running, but an invalid pid file exists
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| 108 | # remove the pid file and continue
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| 109 | rm -f "${pidfile}"
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| 110 | ;;
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| 111 |
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| 112 | 3)
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| 113 | # program is not running and no pidfile exists
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| 114 | # do nothing here, let start_deamon continue.
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| 115 | ;;
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| 116 |
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| 117 | *)
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| 118 | # Others as returned by status values shall not be interpreted
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| 119 | # and returned as an unspecified error.
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| 120 | return 1
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| 121 | ;;
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| 122 | esac
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| 123 | fi
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| 124 |
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| 125 | # do the start!
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| 126 | nice -n "${nice}" "${@}"
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| 127 |
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| 128 | }
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| 129 |
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| 130 | ################################################################################
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| 131 | # killproc() #
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| 132 | # Usage: killproc [-p pidfile] pathname [signal] #
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| 133 | # #
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| 134 | # Purpose: Send control signals to running processes #
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| 135 | # #
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| 136 | # Inputs: -p pidfile, uses the specified pidfile #
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| 137 | # pathname, pathname to the specified program #
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| 138 | # signal, send this signal to pathname #
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| 139 | # #
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| 140 | # Return values (as defined by LSB exit codes): #
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| 141 | # 0 - program (pathname) has stopped/is already stopped or a #
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| 142 | # running program has been sent specified signal and stopped #
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| 143 | # successfully #
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| 144 | # 1 - generic or unspecified error #
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| 145 | # 2 - invalid or excessive argument(s) #
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| 146 | # 5 - program is not installed #
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| 147 | # 7 - program is not running and a signal was supplied #
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| 148 | ################################################################################
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| 149 | killproc()
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| 150 | {
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| 151 | local pidfile
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| 152 | local program
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| 153 | local prefix
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| 154 | local progname
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| 155 | local signal="-TERM"
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| 156 | local fallback="-KILL"
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| 157 | local nosig
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| 158 | local pidlist
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| 159 | local retval
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| 160 | local pid
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| 161 | local delay="30"
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| 162 | local piddead
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| 163 | local dtime
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| 164 |
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| 165 | # Process arguments
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| 166 | while true
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| 167 | do
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| 168 | case "${1}" in
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| 169 |
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| 170 | -p)
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| 171 | pidfile="${2}"
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| 172 | shift 2
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| 173 | ;;
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| 174 |
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| 175 | *)
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| 176 | program="${1}"
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| 177 | if [ -n "${2}" ]
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| 178 | then
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| 179 | signal="${2}"
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| 180 | fallback=""
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| 181 | else
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| 182 | nosig=1
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| 183 | fi
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| 184 |
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| 185 | # error on additional arguments
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| 186 | if [ -n "${3}" ]
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| 187 | then
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| 188 | return 2
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| 189 | else
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| 190 | break
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| 191 | fi
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| 192 | ;;
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| 193 | esac
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| 194 | done
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| 195 |
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| 196 | # Check for a valid program
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| 197 | if [ ! -e "${program}" ]
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| 198 | then
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| 199 | return 5
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| 200 | fi
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| 201 |
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| 202 | # Check for a valid signal
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| 203 | check_signal "${signal}"
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| 204 | if [ "${?}" != "0" ]
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| 205 | then
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| 206 | return 2
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| 207 | fi
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| 208 |
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| 209 | # Get a list of pids
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| 210 | if [ -z "${pidfile}" ]
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| 211 | then
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| 212 | # determine the pid by discovery
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| 213 | pidlist=`pidofproc "${1}"`
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| 214 | retval="${?}"
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| 215 | else
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| 216 | # The PID file contains the needed PIDs
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| 217 | # Note that by LSB requirement, the path must be given to pidofproc,
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| 218 | # however, it is not used by the current implementation or standard.
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| 219 | pidlist=`pidofproc -p "${pidfile}" "${1}"`
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| 220 | retval="${?}"
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| 221 | fi
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| 222 |
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| 223 | # return a value ONLY
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| 224 | # It is the init script's (or distribution's functions) responsibilty
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| 225 | # to log messages!
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| 226 | case "${retval}" in
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| 227 |
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| 228 | 0)
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| 229 | # program is running correctly
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| 230 | # do nothing here, let killproc continue.
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| 231 | ;;
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| 232 |
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| 233 | 1)
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| 234 | # program is not running, but an invalid pid file exists
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| 235 | # remove the pid file.
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| 236 | rm -f "${pidfile}"
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| 237 | # this is only a success if no signal was passed.
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| 238 | if [ -n "${nosig}" ]
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| 239 | then
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| 240 | return 0
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| 241 | else
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| 242 | return 7
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| 243 | fi
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| 244 | ;;
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| 245 |
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| 246 | 3)
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| 247 | # program is not running and no pidfile exists
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| 248 | # this is only a success if no signal was passed.
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| 249 | if [ -n "${nosig}" ]
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| 250 | then
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| 251 | return 0
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| 252 | else
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| 253 | return 7
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| 254 | fi
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| 255 | ;;
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| 256 |
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| 257 | *)
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| 258 | # Others as returned by status values shall not be interpreted
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| 259 | # and returned as an unspecified error.
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| 260 | return 1
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| 261 | ;;
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| 262 | esac
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| 263 |
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| 264 | # perform different actions for exit signals and control signals
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| 265 | check_sig_type "${signal}"
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| 266 | if [ "${?}" -eq "0" ] # signal is used to terminate the program
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| 267 | then
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| 268 | # account for empty pidlist (pid file still exists and nosignal was given)
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| 269 | if [ "${pidlist}" != "" ]; then
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| 270 | #kill the list of pids
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| 271 | for pid in ${pidlist}
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| 272 | do
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| 273 | kill -0 "${pid}" 2> /dev/null
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| 274 | if [ "${?}" -ne "0" ]; then
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| 275 | # process is dead, continue to next and assume all is well
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| 276 | continue
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| 277 | else
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| 278 | kill "${signal}" "${pid}" 2> /dev/null
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| 279 | # Wait up to ${delay}/10 seconds to for "${pid}" to
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| 280 | # terminate in 10ths of a second
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| 281 | while [ "${delay}" != "0" ]
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| 282 | do
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| 283 | kill -0 "${pid}" 2> /dev/null || piddead="1"
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| 284 | if [ "${piddead}" = "1" ]
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| 285 | then
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| 286 | break
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| 287 | fi
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| 288 | sleep 0.1
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| 289 | delay="$(( ${delay} - 1 ))"
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| 290 | done
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| 291 | # If a fallback is set, and program is still running, then
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| 292 | # use the fallback
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| 293 | if [ -n "${fallback}" -a "${piddead}" != "1" ]
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| 294 | then
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| 295 | kill "${fallback}" "${pid}" 2> /dev/null
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| 296 | sleep 1
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| 297 | # Check again, and fail if still running
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| 298 | kill -0 "${pid}" 2> /dev/null && return 1
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| 299 | else
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| 300 | # just check one last time and if still alive, fail
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| 301 | sleep 1
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| 302 | kill -0 "${pid}" 2> /dev/null && return 1
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| 303 | fi
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| 304 | fi
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| 305 | done
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| 306 | fi
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| 307 |
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| 308 | # Check for and remove stale PID files.
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| 309 | if [ -z "${pidfile}" ]
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| 310 | then
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| 311 | #find the basename of $program
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| 312 | prefix=`echo "${program}" | sed 's/[^/]*$//'`
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| 313 | progname=`echo "${program}" | sed "s@${prefix}@@"`
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| 314 | if [ -e "/var/run/${progname}.pid" ]
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| 315 | then
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| 316 | rm -f "/var/run/${progname}.pid" 2> /dev/null
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| 317 | fi
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| 318 | else
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| 319 | if [ -e "${pidfile}" ]
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| 320 | then
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| 321 | rm -f "${pidfile}" 2> /dev/null
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| 322 | fi
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| 323 | fi
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| 324 |
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| 325 | # For signals that do not expect a program to exit, simply
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| 326 | # let kill do it's job, and evaluate kills return for value
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| 327 | else # check_sig_type - signal is not used to terminate program
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| 328 | for pid in ${pidlist}
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| 329 | do
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| 330 | kill "${signal}" "${pid}"
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| 331 | if [ "${?}" -ne "0" ]; then
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| 332 | return 1
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| 333 | fi
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| 334 | done
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| 335 | fi
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| 336 | }
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| 337 |
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| 338 | ################################################################################
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| 339 | # pidofproc() #
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| 340 | # Usage: pidofproc [-p pidfile] pathname #
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| 341 | # #
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| 342 | # Purpose: This function returns one or more pid(s) for a particular daemon #
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| 343 | # #
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| 344 | # Inputs: -p pidfile, use the specified pidfile instead of pidof #
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| 345 | # pathname, path to the specified program #
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| 346 | # #
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| 347 | # Return values (as defined by LSB status codes): #
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| 348 | # 0 - Success (PIDs to stdout) #
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| 349 | # 1 - Program is dead, PID file still exists (remaining PIDs output) #
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| 350 | # 3 - Program is not running (no output) #
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| 351 | ################################################################################
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| 352 | pidofproc()
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| 353 | {
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| 354 |
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| 355 | local pidfile
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| 356 | local program
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| 357 | local prefix
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| 358 | local progname
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| 359 | local pidlist
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| 360 | local lpids
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| 361 | local exitstatus="0"
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| 362 |
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| 363 | # Process arguments
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| 364 | while true
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| 365 | do
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| 366 | case "${1}" in
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| 367 |
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| 368 | -p)
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| 369 | pidfile="${2}"
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| 370 | shift 2
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| 371 | ;;
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| 372 |
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| 373 | *)
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| 374 | program="${1}"
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| 375 | if [ -n "${2}" ]
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| 376 | then
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| 377 | # Too many arguments
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| 378 | # Since this is status, return unknown
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| 379 | return 4
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| 380 | else
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| 381 | break
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| 382 | fi
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| 383 | ;;
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| 384 | esac
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| 385 | done
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| 386 |
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| 387 | # If a PID file is not specified, try and find one.
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| 388 | if [ -z "${pidfile}" ]
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| 389 | then
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| 390 | # get the program's basename
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| 391 | prefix=`echo "${program}" | sed 's/[^/]*$//'`
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| 392 | progname=`echo "${program}" | sed "s@${prefix}@@"`
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| 393 | # if a PID file exists with that name, assume that is it.
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| 394 | if [ -e "/var/run/${progname}.pid" ]
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| 395 | then
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| 396 | pidfile="/var/run/${progname}.pid"
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| 397 | fi
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| 398 | fi
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| 399 |
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| 400 | # if a PID file is set and exists, use it.
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| 401 | if [ -n "${pidfile}" -a -e "${pidfile}" ]
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| 402 | then
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| 403 | # use the value in the first line of the pidfile
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| 404 | pidlist=`/bin/head -n1 "${pidfile}"`
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| 405 | # This can optionally be written as 'sed 1q' to repalce 'head -n1'
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| 406 | # should LFS move /bin/head to /usr/bin/head
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| 407 | else
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| 408 | # use pidof
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| 409 | pidlist=`pidof "${program}"`
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| 410 | fi
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| 411 |
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| 412 | # Figure out if all listed PIDs are running.
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| 413 | for pid in ${pidlist}
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| 414 | do
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| 415 | kill -0 ${pid} 2> /dev/null
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| 416 | if [ "${?}" = "0" ]; then
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| 417 | lpids="${pids}${pid} "
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| 418 | else
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| 419 | exitstatus="1"
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| 420 | fi
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| 421 | done
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| 422 |
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| 423 | if [ -z "${lpids}" -a ! -f "${pidfile}" ]; then
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| 424 | return 3
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| 425 | else
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| 426 | echo "${lpids}"
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| 427 | return "${exitstatus}"
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| 428 | fi
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| 429 | }
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| 430 | ################################################################################
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| 431 | # log_success_msg() #
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| 432 | # Usage: log_success_msg [$MESSAGE | "message"] #
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| 433 | # #
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| 434 | # Purpose: Print a successful status message to the screen and optionally #
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| 435 | # a boot log file. #
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| 436 | # #
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| 437 | # Inputs: accepts one string value, either a quoted string or optionally #
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| 438 | # the value of $MESSAGE if set in the running environment. #
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| 439 | # #
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| 440 | # Return values: Not used #
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| 441 | ################################################################################
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| 442 | log_success_msg()
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| 443 | {
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| 444 | echo -n -e "${PREFIX_SUCCESS}${@}"
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| 445 | echo -e "${SET_COL}${BRACKET}[${SUCCESS} OK ${BRACKET}]${NORMAL}"
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| 446 | if [ "${BOOTLOG_ENAB}" = "yes" ]; then
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| 447 | if [ $( hostname ) = "(none)" ]; then
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| 448 | BTTIMESPEC=""
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| 449 | else
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| 450 | BTTIMESPEC="$(echo `date +"%b %d %T"` `hostname`) "
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| 451 | fi
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| 452 | echo "${BTTIMESPEC}bootlog: ${@} Successful" >> "${TEMPFS_MOUNT}/.bootlog"
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| 453 | fi
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| 454 | return 0
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| 455 | }
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| 456 |
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| 457 | ################################################################################
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| 458 | # log_failure_msg() #
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| 459 | # Usage: log_failure_msg [$MESSAGE | "message"] #
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| 460 | # #
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| 461 | # Purpose: Print a failure status message to the screen and optionally #
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| 462 | # a boot log file. #
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| 463 | # #
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| 464 | # Inputs: accepts one string value, either a quoted string or optionally #
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| 465 | # the value of $MESSAGE if set in the running environment. #
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| 466 | # #
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| 467 | # Return values: Not used #
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| 468 | ################################################################################
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| 469 | log_failure_msg()
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| 470 | {
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| 471 | echo -n -e "${PREFIX_FAILURE}${@}"
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| 472 | echo -e "${SET_COL}${BRACKET}[${FAILURE} FAIL ${BRACKET}]${NORMAL}"
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| 473 | if [ "${BOOTLOG_ENAB}" = "yes" ]; then
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| 474 | if [ $( hostname ) = "(none)" ]; then
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| 475 | BTTIMESPEC=""
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| 476 | else
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| 477 | BTTIMESPEC="$(echo `date +"%b %d %T"` `hostname`) "
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| 478 | fi
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| 479 | echo "${BTTIMESPEC}bootlog: ${@} Failed!" >> "${TEMPFS_MOUNT}/.bootlog"
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| 480 | fi
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| 481 | return 0
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| 482 | }
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| 483 |
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| 484 | ################################################################################
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| 485 | # log_warning_msg() #
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| 486 | # Usage: log_warning_msg [$MESSAGE | "message"] #
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| 487 | # #
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| 488 | # Purpose: Print a warning status message to the screen and optionally #
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| 489 | # a boot log file. #
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| 490 | # #
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| 491 | # Inputs: accepts one string value, either a quoted string or optionally #
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| 492 | # the value of $MESSAGE if set in the running environment. #
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| 493 | # #
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| 494 | # Return values: Not used #
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| 495 | ################################################################################
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| 496 | log_warning_msg()
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| 497 | {
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| 498 | echo -n -e "${PREFIX_WARNING}${@}"
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| 499 | echo -e "${SET_COL}${BRACKET}[${WARNING} WARN ${BRACKET}]${NORMAL}"
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| 500 | if [ "${BOOTLOG_ENAB}" = "yes" ]; then
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| 501 | if [ $( hostname ) = "(none)" ]; then
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| 502 | BTTIMESPEC=""
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| 503 | else
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| 504 | BTTIMESPEC="$(echo `date +"%b %d %T"` `hostname`) "
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| 505 | fi
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| 506 | echo "${BTTIMESPEC}bootlog: ${@} Warning" >> "${TEMPFS_MOUNT}/.bootlog"
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| 507 | fi
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| 508 | return 0
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| 509 | }
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| 510 |
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| 511 | ################################################################################
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| 512 | # check_signal() #
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| 513 | # Usage: check_signal [ -{signal} | {signal} ] #
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| 514 | # #
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| 515 | # Purpose: Check for a valid signal. This is not defined by any LSB draft, #
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| 516 | # however, it is required to check the signals to determine if the #
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| 517 | # signals chosen are invalid arguments to the other functions. #
|
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| 518 | # #
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| 519 | # Inputs: accepts a single string value in the form or -{signal} or {signal} #
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| 520 | # #
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| 521 | # Return values: #
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| 522 | # 0 - Success (signal is valid #
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| 523 | # 1 - Signal is not valid #
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| 524 | ################################################################################
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| 525 | check_signal()
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| 526 | {
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| 527 | local valsig
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| 528 |
|
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| 529 | # Add error handling for invalid signals
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| 530 | valsig="-ALRM -HUP -INT -KILL -PIPE -POLL -PROF -TERM -USR1 -USR2"
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| 531 | valsig="${valsig} -VTALRM -STKFLT -PWR -WINCH -CHLD -URG -TSTP -TTIN"
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| 532 | valsig="${valsig} -TTOU -STOP -CONT -ABRT -FPE -ILL -QUIT -SEGV -TRAP"
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| 533 | valsig="${valsig} -SYS -EMT -BUS -XCPU -XFSZ -0 -1 -2 -3 -4 -5 -6 -8 -9"
|
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| 534 | valsig="${valsig} -11 -13 -14 -15"
|
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| 535 |
|
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| 536 | echo "${valsig}" | grep -- " ${1} " > /dev/null
|
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| 537 | if [ "${?}" = "0" ]
|
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| 538 | then
|
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| 539 | return 0
|
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| 540 | else
|
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| 541 | return 1
|
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| 542 | fi
|
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| 543 | }
|
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| 544 |
|
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| 545 |
|
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| 546 | ################################################################################
|
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| 547 | # check_sig_type() #
|
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| 548 | # Usage: check_signal [ -{signal} | {signal} ] #
|
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| 549 | # #
|
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| 550 | # Purpose: Check if signal is a program termination signal or a control signal #
|
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| 551 | # This is not defined by any LSB draft, however, it is required to #
|
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| 552 | # check the signals to determine if they are intended to end a #
|
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| 553 | # program or simply to control it. #
|
---|
| 554 | # #
|
---|
| 555 | # Inputs: accepts a single string value in the form or -{signal} or {signal} #
|
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| 556 | # #
|
---|
| 557 | # Return values: #
|
---|
| 558 | # 0 - Signal is used for program termination #
|
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| 559 | # 1 - Signal is used for program control #
|
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| 560 | ################################################################################
|
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| 561 | check_sig_type()
|
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| 562 | {
|
---|
| 563 | local valsig
|
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| 564 |
|
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| 565 | # The list of termination signals (limited to generally used items)
|
---|
| 566 | valsig="-ALRM -INT -KILL -TERM -PWR -STOP -ABRT -QUIT -2 -3 -6 -9 -14 -15"
|
---|
| 567 |
|
---|
| 568 | echo "${valsig}" | grep -- " ${1} " > /dev/null
|
---|
| 569 | if [ "${?}" = "0" ]
|
---|
| 570 | then
|
---|
| 571 | return 0
|
---|
| 572 | else
|
---|
| 573 | return 1
|
---|
| 574 | fi
|
---|
| 575 | }
|
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| 576 |
|
---|
| 577 | # End /lib/lsb/init-functions
|
---|