/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright (c) 1994 David Greenman
* Copyright (c) 1994 Henrik Vestergaard Draboel (hvd@terry.ping.dk)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Henrik Vestergaard Draboel.
* This product includes software developed by David Greenman.
* 4. Neither the names of the authors nor the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/rtprio.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static int parseint(const char *, const char *);
static void usage(void) __dead2;
int
main(int argc, char *argv[])
{
struct rtprio rtp;
const char *progname;
pid_t proc = 0;
progname = getprogname();
if (strcmp(progname, "rtprio") == 0)
rtp.type = RTP_PRIO_REALTIME;
else if (strcmp(progname, "idprio") == 0)
rtp.type = RTP_PRIO_IDLE;
else
errx(1, "invalid progname");
switch (argc) {
case 2:
proc = parseint(argv[1], "pid");
proc = abs(proc);
/* FALLTHROUGH */
case 1:
if (rtprio(RTP_LOOKUP, proc, &rtp) != 0)
err(1, "RTP_LOOKUP");
switch (rtp.type) {
case RTP_PRIO_REALTIME:
case RTP_PRIO_FIFO:
warnx("realtime priority %d", rtp.prio);
break;
case RTP_PRIO_NORMAL:
warnx("normal priority");
break;
case RTP_PRIO_IDLE:
warnx("idle priority %d", rtp.prio);
break;
default:
errx(1, "invalid priority type %d", rtp.type);
break;
}
exit(0);
default:
if (argv[1][0] == '-' || isdigit(argv[1][0])) {
if (argv[1][0] == '-') {
if (strcmp(argv[1], "-t") == 0) {
rtp.type = RTP_PRIO_NORMAL;
rtp.prio = 0;
} else {
usage();
break;
}
} else
rtp.prio = parseint(argv[1], "priority");
} else {
usage();
break;
}
if (argv[2][0] == '-') {
proc = parseint(argv[2], "pid");
proc = abs(proc);
}
if (rtprio(RTP_SET, proc, &rtp) != 0)
err(1, "RTP_SET");
if (proc == 0) {
execvp(argv[2], &argv[2]);
err(1, "execvp: %s", argv[2]);
}
exit(0);
}
/* NOTREACHED */
}
static int
parseint(const char *str, const char *errname)
{
char *endp;
long res;
errno = 0;
res = strtol(str, &endp, 10);
if (errno != 0 || endp == str || *endp != '\0')
errx(1, "%s must be a number", errname);
if (res >= INT_MAX)
errx(1, "Integer overflow parsing %s", errname);
return (res);
}
static void
usage(void)
{
(void) fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n",
"usage: [id|rt]prio",
" [id|rt]prio [-]pid",
" [id|rt]prio priority command [args]",
" [id|rt]prio priority -pid",
" [id|rt]prio -t command [args]",
" [id|rt]prio -t -pid");
exit(1);
}
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