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sortix--sortix/utils/kill.cpp
2013-12-17 14:30:23 +01:00

61 lines
1.5 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011.
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>.
kill.cpp
Send a signal to a process.
*******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <errno.h>
#include <error.h>
int usage()
{
printf("usage: kill [-n] pid ...\n");
return 0;
}
int main(int argc, char* argv[])
{
if ( argc < 2 ) { return usage(); }
int first = 1;
int signum = SIGTERM;
if ( argv[1][0] == '-' )
{
signum = atoi(argv[first++]);
if ( argc < 3 ) { return usage(); }
}
int result = 0;
for ( int i = first; i < argc; i++ )
{
pid_t pid = atoi(argv[i]);
if ( kill(pid, signum) )
{
error(0, errno, "(%u)", pid);
result |= 1;
}
}
return result;
}