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-rw-r--r--sys-utils/renice.c225
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diff --git a/sys-utils/renice.c b/sys-utils/renice.c
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+++ b/sys-utils/renice.c
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+/*
+ * Copyright (c) 1983, 1989, 1993
+ * The Regents of the University of California. 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 the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+ /* 1999-02-22 Arkadiusz Miśkiewicz <misiek@pld.ORG.PL>
+ * - added Native Language Support
+ */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+
+#include <stdio.h>
+#include <pwd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "nls.h"
+#include "c.h"
+#include "closestream.h"
+
+static const char *idtype[] = {
+ [PRIO_PROCESS] = N_("process ID"),
+ [PRIO_PGRP] = N_("process group ID"),
+ [PRIO_USER] = N_("user ID"),
+};
+
+static void __attribute__((__noreturn__)) usage(void)
+{
+ FILE *out = stdout;
+ fputs(USAGE_HEADER, out);
+ fprintf(out,
+ _(" %1$s [-n|--priority|--relative] <priority> [-p|--pid] <pid>...\n"
+ " %1$s [-n|--priority|--relative] <priority> -g|--pgrp <pgid>...\n"
+ " %1$s [-n|--priority|--relative] <priority> -u|--user <user>...\n"),
+ program_invocation_short_name);
+
+ fputs(USAGE_SEPARATOR, out);
+ fputs(_("Alter the priority of running processes.\n"), out);
+
+ fputs(USAGE_OPTIONS, out);
+ fputs(_(" -n <num> specify the nice value\n"), out);
+ fputs(_(" If POSIXLY_CORRECT flag is set in environment\n"), out);
+ fputs(_(" then the priority is 'relative' to current\n"), out);
+ fputs(_(" process priority. Otherwise it is 'absolute'.\n"), out);
+ fputs(_(" --priority <num> specify the 'absolute' nice value\n"), out);
+ fputs(_(" --relative <num> specify the 'relative' nice value\n"), out);
+ fputs(_(" -p, --pid interpret arguments as process ID (default)\n"), out);
+ fputs(_(" -g, --pgrp interpret arguments as process group ID\n"), out);
+ fputs(_(" -u, --user interpret arguments as username or user ID\n"), out);
+ fputs(USAGE_SEPARATOR, out);
+ printf(USAGE_HELP_OPTIONS(24));
+ printf(USAGE_MAN_TAIL("renice(1)"));
+ exit(EXIT_SUCCESS);
+}
+
+static int getprio(const int which, const int who, int *prio)
+{
+ errno = 0;
+ *prio = getpriority(which, who);
+ if (*prio == -1 && errno) {
+ warn(_("failed to get priority for %d (%s)"), who, idtype[which]);
+ return -errno;
+ }
+ return 0;
+}
+
+static int donice(const int which, const int who, const int prio, const int relative)
+{
+ int oldprio, newprio;
+
+ if (getprio(which, who, &oldprio) != 0)
+ return 1;
+
+ newprio = prio; // if not relative, set absolute priority
+
+ if (relative)
+ newprio = oldprio + prio;
+
+ if (setpriority(which, who, newprio) < 0) {
+ warn(_("failed to set priority for %d (%s)"), who, idtype[which]);
+ return 1;
+ }
+ if (getprio(which, who, &newprio) != 0)
+ return 1;
+ printf(_("%d (%s) old priority %d, new priority %d\n"),
+ who, idtype[which], oldprio, newprio);
+ return 0;
+}
+
+/*
+ * Change the priority (the nice value) of processes
+ * or groups of processes which are already running.
+ */
+int main(int argc, char **argv)
+{
+ int which = PRIO_PROCESS;
+ int who = 0, prio, errs = 0;
+ int relative = 0;
+ char *endptr = NULL;
+
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+ close_stdout_atexit();
+
+ argc--;
+ argv++;
+
+ if (argc == 1) {
+ if (strcmp(*argv, "-h") == 0 ||
+ strcmp(*argv, "--help") == 0)
+ usage();
+
+ if (strcmp(*argv, "-v") == 0 ||
+ strcmp(*argv, "-V") == 0 ||
+ strcmp(*argv, "--version") == 0)
+ print_version(EXIT_SUCCESS);
+ }
+
+ if (*argv)
+ {
+ if (strcmp(*argv, "-n") == 0)
+ {
+ // Fully conform to posix only if POSIXLY_CORRECT is
+ // set in the environment. If not, use the absolute
+ // value as it's been used (incorrectly) since 2009
+ relative = getenv("POSIXLY_CORRECT") == NULL ? 0 : 1;
+ argc--;
+ argv++;
+ }
+ else if (strcmp(*argv, "--relative") == 0)
+ {
+ relative = 1;
+ argc--;
+ argv++;
+ }
+ else if (strcmp(*argv, "--priority") == 0) {
+ relative = 0;
+ argc--;
+ argv++;
+ }
+ }
+
+ if (argc < 2 || !*argv) {
+ warnx(_("not enough arguments"));
+ errtryhelp(EXIT_FAILURE);
+ }
+
+ prio = strtol(*argv, &endptr, 10);
+ if (*endptr) {
+ warnx(_("invalid priority '%s'"), *argv);
+ errtryhelp(EXIT_FAILURE);
+ }
+ argc--;
+ argv++;
+
+ for (; argc > 0; argc--, argv++) {
+ if (strcmp(*argv, "-g") == 0 || strcmp(*argv, "--pgrp") == 0) {
+ which = PRIO_PGRP;
+ continue;
+ }
+ if (strcmp(*argv, "-u") == 0 || strcmp(*argv, "--user") == 0) {
+ which = PRIO_USER;
+ continue;
+ }
+ if (strcmp(*argv, "-p") == 0 || strcmp(*argv, "--pid") == 0) {
+ which = PRIO_PROCESS;
+ continue;
+ }
+ if (which == PRIO_USER) {
+ struct passwd *pwd = getpwnam(*argv);
+
+ if (pwd != NULL)
+ who = pwd->pw_uid;
+ else
+ who = strtol(*argv, &endptr, 10);
+ if (who < 0 || *endptr) {
+ warnx(_("unknown user %s"), *argv);
+ errs = 1;
+ continue;
+ }
+ } else {
+ who = strtol(*argv, &endptr, 10);
+ if (who < 0 || *endptr) {
+ /* TRANSLATORS: The first %s is one of the above
+ * three ID names. Read: "bad value for %s: %s" */
+ warnx(_("bad %s value: %s"), idtype[which], *argv);
+ errs = 1;
+ continue;
+ }
+ }
+ errs |= donice(which, who, prio, relative);
+ }
+ return errs != 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}
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