Sweden-Number/tools/ipcl

93 lines
1.7 KiB
Perl

#!/usr/bin/perl
#
# Copyright 1995. Michael Veksler.
#
$IPC_RMID=0;
$USER=$ENV{USER};
do open_pipe(IPCS,"ipcs");
#
# The following part is OS dependant, it works under linux only.
# To make it work under other OS
# You should fill in @shm, @sem, @msq lists, with the relevent IPC
# keys.
#
# This code was written to be as much as possible generic, but...
# It works for Linux and ALPHA. I had no BSD machine to test it.
# (As I remember, AIX will work also).
while(<IPCS>) {
split;
# try to find out the IPC-ID, assume it is the first number.
foreach (@_) {
$_ ne int($_) && next; # not a decimal number
$num=$_;
last;
}
if (/mem/i .. /^\s*$/ ) {
index($_,$USER)>=0 || next;
push(@shm,$num);
}
if (/sem/i .. /^\s*$/ ) {
index($_,$USER)>=0 || next;
push(@sem,$num);
}
if (/mes/i .. /^\s*$/ ) {
index($_,$USER)>=0 || next;
push(@msq,$num);
}
}
#
# This is the end of OS dependant code.
#
@shm && print "shmid ", join(":",@shm),"\n";
@sem && print "semid ", join(":",@sem),"\n";
@msq && print "msqid ", join(":",@msq),"\n";
foreach (@shm) {
shmctl($_, $IPC_RMID,0);
}
foreach (@sem) {
semctl($_, 0, $IPC_RMID,0);
}
foreach (@msq) {
msgctl($_, $IPC_RMID,0);
}
exit(0);
sub open_pipe {
local($pid);
local($handle,@params)=@_;
pipe($handle,WRITE) || die "can't pipe";
$pid=fork();
die "can't fork" if ($pid<0);
if ($pid>0) {
# whe are in the parent
close(WRITE);
waitpid($pid,0) || print "$params[0] exits status=$? ",$? >> 8, "\n";
} else {
# we are in the son.
open(STDOUT,">&WRITE");
open(STDERR, ">&WRITE");
close($handle);
close(WRITE);
exec(@params);
exit(-1);
}
}