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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1990-2011 AT&T Intellectual Property *
* and is licensed under the *
* Eclipse Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.eclipse.org/org/documents/epl-v10.html *
* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* Glenn Fowler
* AT&T Research
*
* if co==0 then kill all coshell jobs with sig
* elif cj==0 then kill co jobs with sig
* else kill cj with sig
*
* if sig==0 then cause all CO_SERVICE jobs to fail
*/
#include "colib.h"
/*
* kill job cj in shell co with signal sig
*/
static int
cokilljob(register Coshell_t* co, register Cojob_t* cj, int sig)
{
int n;
if (co->flags & CO_DEBUG)
errormsg(state.lib, 2, "coshell %d kill co=%d cj=%d sig=%d", co->index, co->pid, cj->pid, sig);
if (cj->pid < 0)
return 0;
if (cj->pid == 0)
{
if (cj->service)
co->svc_running--;
else
co->running--;
cj->pid = CO_PID_ZOMBIE;
cj->status = EXIT_TERM(sig);
return 0;
}
if (sig == SIGKILL)
{
co->running--;
cj->pid = CO_PID_ZOMBIE;
cj->status = EXIT_TERM(sig);
}
n = kill(cj->pid, sig);
killpg(cj->pid, sig);
return n;
}
/*
* kill cj (or all jobs if cj==0) in shell co with sig
*/
static int
cokillshell(register Coshell_t* co, register Cojob_t* cj, int sig)
{
int n;
if (sig && (co->flags & CO_SERVER))
{
char buf[CO_BUFSIZ];
n = sfsprintf(buf, sizeof(buf), "#%05d\nk %d %d\n", 0, cj ? cj->id : 0, sig);
sfsprintf(buf, 7, "#%05d\n", n - 7);
return write(co->cmdfd, buf, n) == n ? 0 : -1;
}
if (cj)
return cokilljob(co, cj, sig);
n = 0;
for (cj = co->jobs; cj; cj = cj->next)
if (cj->pid > 0)
n |= cokilljob(co, cj, sig);
return n;
}
int
cokill(register Coshell_t* co, register Cojob_t* cj, int sig)
{
int any;
int n;
if (cj)
{
if (!co)
co = cj->coshell;
else if (co != cj->coshell)
return -1;
any = 0;
}
else if (co)
any = 0;
else if (!(co = state.coshells))
return -1;
else
any = 1;
if (co->flags & CO_DEBUG)
errormsg(state.lib, 2, "coshell %d kill co=%d cj=%d sig=%d", co->index, co ? co->pid : 0, cj ? cj->pid : 0, sig);
switch (sig)
{
case SIGINT:
sig = SIGTERM;
break;
#if defined(SIGSTOP) && defined(SIGTSTP)
case SIGTSTP:
sig = SIGSTOP;
break;
#endif
}
n = 0;
do
{
cowait(co, (Cojob_t*)co, 0);
n |= cokillshell(co, cj, sig);
} while (any && (co = co->next));
return n;
}
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