Use err(3). Add usage() and prototypes.
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parent
321e481502
commit
0bb6b796dd
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=27917
@ -32,27 +32,37 @@
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*/
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#ifndef lint
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static char copyright[] =
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static const char copyright[] =
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"@(#) Copyright (c) 1983, 1989, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)renice.c 8.1 (Berkeley) 6/9/93";
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#endif
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static const char rcsid[] =
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"$Id$";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <pwd.h>
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int donice __P((int, int, int));
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static void usage __P((void));
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/*
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* Change the priority (nice) of processes
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* or groups of processes which are already
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* running.
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*/
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int
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main(argc, argv)
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char **argv;
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{
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@ -60,11 +70,8 @@ main(argc, argv)
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int who = 0, prio, errs = 0;
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argc--, argv++;
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if (argc < 2) {
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fprintf(stderr, "usage: renice priority [ [ -p ] pids ] ");
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fprintf(stderr, "[ [ -g ] pgrps ] [ [ -u ] users ]\n");
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exit(1);
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}
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if (argc < 2)
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usage();
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prio = atoi(*argv);
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argc--, argv++;
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if (prio > PRIO_MAX)
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@ -88,16 +95,14 @@ main(argc, argv)
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register struct passwd *pwd = getpwnam(*argv);
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if (pwd == NULL) {
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fprintf(stderr, "renice: %s: unknown user\n",
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*argv);
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warnx("%s: unknown user", *argv);
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continue;
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}
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who = pwd->pw_uid;
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} else {
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who = atoi(*argv);
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if (who < 0) {
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fprintf(stderr, "renice: %s: bad value\n",
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*argv);
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warnx("%s: bad value", *argv);
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continue;
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}
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}
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@ -106,6 +111,15 @@ main(argc, argv)
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exit(errs != 0);
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}
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static void
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usage()
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{
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fprintf(stderr,
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"usage: renice priority [ [ -p ] pids ] [ [ -g ] pgrps ] [ [ -u ] users ]\n");
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exit(1);
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}
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int
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donice(which, who, prio)
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int which, who, prio;
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{
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@ -114,13 +128,11 @@ donice(which, who, prio)
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errno = 0, oldprio = getpriority(which, who);
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if (oldprio == -1 && errno) {
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fprintf(stderr, "renice: %d: ", who);
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perror("getpriority");
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warn("%d: getpriority", who);
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return (1);
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}
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if (setpriority(which, who, prio) < 0) {
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fprintf(stderr, "renice: %d: ", who);
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perror("setpriority");
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warn("%d: setpriority", who);
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return (1);
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}
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printf("%d: old priority %d, new priority %d\n", who, oldprio, prio);
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