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/* vi: set sw=4 ts=4:
*
* killall.c - Send signal (default: TERM) to all processes with given names.
*
* Copyright 2012 Andreas Heck <aheck@gmx.de>
*
* Not in SUSv4.
USE_KILLALL(NEWTOY(killall, "<1?lq", TOYFLAG_USR|TOYFLAG_BIN))
config KILLALL
bool "killall"
default y
help
usage: killall [-l] [-q] [-SIG] PROCESS_NAME...
Send a signal (default: TERM) to all processes with the given names.
-l print list of all available signals
-q don't print any warnings or error messages
*/
#include "toys.h"
#define FLAG_q 1
#define FLAG_l 2
DEFINE_GLOBALS(
int signum;
)
#define TT this.killall
struct signame {
int num;
char *name;
};
// Signals required by POSIX 2008:
// http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/signal.h.html
#define SIGNIFY(x) {SIG##x, #x}
static struct signame signames[] = {
SIGNIFY(ABRT), SIGNIFY(ALRM), SIGNIFY(BUS), SIGNIFY(CHLD), SIGNIFY(CONT),
SIGNIFY(FPE), SIGNIFY(HUP), SIGNIFY(ILL), SIGNIFY(INT), SIGNIFY(KILL),
SIGNIFY(PIPE), SIGNIFY(QUIT), SIGNIFY(SEGV), SIGNIFY(STOP), SIGNIFY(TERM),
SIGNIFY(TSTP), SIGNIFY(TTIN), SIGNIFY(TTOU), SIGNIFY(USR1), SIGNIFY(USR2),
SIGNIFY(SYS), SIGNIFY(TRAP), SIGNIFY(URG), SIGNIFY(VTALRM), SIGNIFY(XCPU),
SIGNIFY(XFSZ)
};
// SIGNIFY(STKFLT), SIGNIFY(WINCH), SIGNIFY(IO), SIGNIFY(PWR)
// Convert name to signal number. If name == NULL print names.
static int sig_to_num(char *pidstr)
{
int i;
if (pidstr) {
if (isdigit(*pidstr)) return atol(pidstr);
if (!strncasecmp(pidstr, "sig", 3)) pidstr+=3;
}
for (i = 0; i < sizeof(signames)/sizeof(struct signame); i++)
if (!pidstr) xputs(signames[i].name);
else if (!strcasecmp(pidstr, signames[i].name))
return signames[i].num;
return -1;
}
static void kill_process(pid_t pid)
{
int ret;
toys.exitval = 0;
ret = kill(pid, TT.signum);
if (ret == -1 && !(toys.optflags & FLAG_q)) perror("kill");
}
void killall_main(void)
{
char **names;
if (toys.optflags & FLAG_l) {
sig_to_num(NULL);
return;
}
TT.signum = SIGTERM;
toys.exitval++;
if (!*toys.optargs) {
toys.exithelp = 1;
error_exit("Process name missing!");
}
names = toys.optargs;
if (**names == '-') {
if (0 > (TT.signum = sig_to_num((*names)+1))) {
if (toys.optflags & FLAG_q) exit(1);
error_exit("Invalid signal");
}
names++;
if (!*names) {
toys.exithelp++;
error_exit("Process name missing!");
}
}
for_each_pid_with_name_in(names, kill_process);
if (toys.exitval && !(toys.optflags & FLAG_q))
error_exit("No such process");
}
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