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//proc/self/root/proc/self/root/opt/splunkforwarder/bin/pid_check.sh
#!/bin/sh # tests to see if the given pid is held by a valid owner. # Exit codes: # 0/success pid is a valid owner -- service is up/locked # 3 pid is not a valid owner (no such pid, or some other process) # 3 is chosen here in keeping with the value from 'splunk status' # This value is used by the Linux Standard Base for "service is not running" # 1 Error was encountered. # # Running the command with no arguments returns 0 also along with printing usage usage() { if [ x"$1" = x ]; then fd=1 else fd=$1 fi echo >&$fd "Usage: $0 <type> <pid>" echo >&$fd " valid types: conf-mutator, splunkd" echo >&$fd " pid: pid to check for ownership" } if [ $# = 0 ]; then usage exit fi if [ "$#" != 2 ]; then echo >&2 "$0: error. incorrect arguments provided." usage 2 exit 1 fi pid_type="$1" check_pid="$2" # Some system binaries will error/warn about control env variables # they don't like or honor. We want real errors reported, but these # "fake errors" will cry wolf all the time. So give a fairly plain # environment to 'ps'. clean_env() { # Don't run some nonsystem ps (/usr/ucb etc) PATH=/usr/xpg4/bin:/usr/bin:/bin unset LIBPATH unset SHLIB_PATH unset PYTHONPATH # paranoia LC_ALL=C export LC_ALL # This is a bit sensitive to maximum line length, but it won't work in a # pipeline because that's a subshell. for env_var in `env | egrep '^(DYLD_|LD_)' | sed 's/=.*//'`; do unset $env_var done } check_mutator() { check_pid="$1" case `uname`x in x) echo >&2 "$0: error. uname did not provide the os name." exit 1 ;; HP-UXx) # HP-UX doesn't implement -o unless an empty-string UNIX95 is in the env command_name=`UNIX95= ps -p "$check_pid" -o comm=` ;; *) command_name=`ps -p "$check_pid" -o comm=` ;; esac case "$command_name"x in # Some unixes show a path, some don't */splunkx|*/splunkdx|splunkx|splunkdx) has_valid_owner=true ;; *) # This includes no output, which means that pid isn't around has_valid_owner=false ;; esac } check_splunkd() { check_pid="$1" case `uname`x in x) echo >&2 "$0: error. uname did not provide the os name." exit 1 ;; HP-UXx) # HP-UX doesn't implement -o unless an empty-string UNIX95 is in the env command_name=`UNIX95= ps -p "$check_pid" -o comm=` command_args=`UNIX95= ps -p "$check_pid" -o args=` command_ppid=`UNIX95= ps -p "$check_pid" -o ppid=` ;; FreeBSDx) command_name=`ps -p "$check_pid" -o comm=` # FreeBSD truncates the args unless -ww command_args=`ps -ww -p "$check_pid" -o args=` command_ppid=`ps -p "$check_pid" -o ppid=` ;; SunOSx) command_name=`ps -p "$check_pid" -o comm=` # Solaris ps *always* truncates the args, but pargs does not command_args=`pargs -c -l "$check_pid" 2>/dev/null` command_ppid=`ps -p "$check_pid" -o ppid=` ;; *) command_name=`ps -p "$check_pid" -o comm=` command_args=`ps -p "$check_pid" -o args=` command_ppid=`ps -p "$check_pid" -o ppid=` ;; esac # get rid of leading whitespace for the ppid -- # there could be whitespace for the other values, but we don't actually care set -- $command_ppid command_ppid=$1 case "$command_name"x in # Some unixes show a path, some don't */splunkdx|splunkdx) # ok! ;; *) # not splunkd has_valid_owner=false return ;; esac # Init does not exist in some environments :-( has_valid_owner=true return #case "$command_args"x in # *--nodaemonx) # # the nodaemon switch is a good indicator it's the main splunkd # has_valid_owner=true # return # ;; # *) # ;; #esac #case "$command_ppid"x in # 1x) # # parent is init. # has_valid_owner=true # return # ;; # *) # has_valid_owner=false # return # ;; #esac } check_splunkweb() { check_pid="$1" case `uname`x in x) echo >&2 "$0: error. uname did not provide the os name." exit 1 ;; HP-UXx) # HP-UX doesn't implement -o unless an empty-string UNIX95 is in the env command_name=`UNIX95= ps -p "$check_pid" -o comm=` command_args=`UNIX95= ps -p "$check_pid" -o args=` command_ppid=`UNIX95= ps -p "$check_pid" -o ppid=` ;; FreeBSDx) command_name=`ps -p "$check_pid" -o comm=` # FreeBSD truncates the args unless -ww command_args=`ps -ww -p "$check_pid" -o args=` command_ppid=`ps -p "$check_pid" -o ppid=` ;; SunOSx) command_name=`ps -p "$check_pid" -o comm=` # Solaris ps *always* truncates the args, but pargs does not command_args=`pargs -c -l "$check_pid" 2>/dev/null` command_ppid=`ps -p "$check_pid" -o ppid=` ;; *) command_name=`ps -p "$check_pid" -o comm=` command_args=`ps -p "$check_pid" -o args=` command_ppid=`ps -p "$check_pid" -o ppid=` ;; esac # get rid of leading whitespace for the ppid -- # there could be whitespace for the other values, but we don't actually care set -- $command_ppid command_ppid=$1 case "$command_name"x in # Some unixes show a path, some don't */pythonx|pythonx) # ok! ;; *) # not python, not splunkweb has_valid_owner=false return ;; esac case "$command_args"x in *root.py*) # splunkweb contains the string 'root.py', because that's how it's started up ;; *) # python commands without root.py are not splunkweb has_valid_owner=false return ;; esac # init doesn't exist in some environments. :-( has_valid_owner=true return #case "$command_ppid"x in # 1x) # # parent is init. # has_valid_owner=true # return # ;; # *) # has_valid_owner=false # return # ;; #esac } clean_env case "$pid_type"x in conf-mutatorx) check_mutator "$check_pid" ;; splunkdx) check_splunkd "$check_pid" ;; splunkwebx) check_splunkweb "$check_pid" ;; *) echo >&2 "$0: error. unknown pid type $pid_type" exit 1 ;; esac if [ "$has_valid_owner"x = "true"x ]; then exit 0 else # using 3 value, in keeping with LSB that we use for 'splunk status' # to mean "its not running" exit 3 fi
