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/* See LICENSE file for copyright and license details. */
#include <sys/resource.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include "util.h"
#ifndef PRIO_MIN
#define PRIO_MIN -NZERO
#endif
#ifndef PRIO_MAX
#define PRIO_MAX (NZERO-1)
#endif
static void
usage(void)
{
eprintf("usage: %s [-n inc] cmd [arg ...]\n", argv0);
}
int
main(int argc, char *argv[])
{
int val = 10, r, savederrno;
ARGBEGIN {
case 'n':
val = estrtonum(EARGF(usage()), PRIO_MIN, PRIO_MAX);
break;
default:
usage();
break;
} ARGEND
if (!argc)
usage();
errno = 0;
r = getpriority(PRIO_PROCESS, 0);
if (errno)
weprintf("getpriority:");
else
val += r;
LIMIT(val, PRIO_MIN, PRIO_MAX);
if (setpriority(PRIO_PROCESS, 0, val) < 0)
weprintf("setpriority:");
execvp(argv[0], argv);
savederrno = errno;
weprintf("execvp %s:", argv[0]);
_exit(126 + (savederrno == ENOENT));
}