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/* $OpenBSD: nice.c,v 1.15 2015/10/19 18:53:35 deraadt Exp $ */ |
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/* $NetBSD: nice.c,v 1.9 1995/08/31 23:30:58 jtc Exp $ */ |
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/* |
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* Copyright (c) 1989 The Regents of the University of California. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <sys/resource.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <locale.h> |
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#include <ctype.h> |
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#include <errno.h> |
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#include <err.h> |
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#include <unistd.h> |
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#define DEFNICE 10 |
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int main(int, char **); |
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static void usage(void); |
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int |
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main(int argc, char *argv[]) |
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{ |
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const char *errstr; |
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int prio = DEFNICE; |
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int c; |
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setlocale(LC_ALL, ""); |
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if (pledge("stdio exec proc wpath cpath rpath", NULL) == -1) |
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err(1, "pledge"); |
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/* handle obsolete -number syntax */ |
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if (argc > 1 && argv[1][0] == '-' && |
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isdigit((unsigned char)argv[1][1])) { |
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prio = strtonum(argv[1] + 1, PRIO_MIN, PRIO_MAX, &errstr); |
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if (errstr) |
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errx(1, "increment is %s", errstr); |
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argc--; |
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argv++; |
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} |
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while ((c = getopt (argc, argv, "n:")) != -1) { |
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switch (c) { |
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case 'n': |
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prio = strtonum(optarg, PRIO_MIN, PRIO_MAX, &errstr); |
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if (errstr) |
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errx(1, "increment is %s", errstr); |
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break; |
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default: |
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usage(); |
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break; |
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} |
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} |
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argc -= optind; |
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argv += optind; |
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if (argc == 0) |
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usage(); |
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errno = 0; |
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prio += getpriority(PRIO_PROCESS, 0); |
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if (errno) |
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err(1, "getpriority"); |
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if (setpriority(PRIO_PROCESS, 0, prio)) |
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warn("setpriority"); |
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if (pledge("stdio exec wpath cpath rpath", NULL) == -1) |
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err(1, "pledge"); |
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execvp(argv[0], &argv[0]); |
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err((errno == ENOENT) ? 127 : 126, "%s", argv[0]); |
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} |
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static void |
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usage(void) |
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{ |
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extern char *__progname; |
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fprintf(stderr, "usage: %s [-n increment] utility [argument ...]\n", |
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__progname); |
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exit(1); |
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} |