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6dbe3af9 KZ |
1 | /* |
2 | * Copyright (c) 1983, 1989, 1993 | |
3 | * The Regents of the University of California. All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
b50945d4 | 34 | /* 1999-02-22 Arkadiusz MiĆkiewicz <misiek@pld.ORG.PL> |
7eda085c KZ |
35 | * - added Native Language Support |
36 | */ | |
37 | ||
6dbe3af9 KZ |
38 | #include <sys/types.h> |
39 | #include <sys/time.h> | |
40 | #include <sys/resource.h> | |
41 | ||
42 | #include <stdio.h> | |
43 | #include <pwd.h> | |
fd6b7a7f | 44 | #include <stdlib.h> |
66ee8158 | 45 | #include <string.h> |
7eda085c KZ |
46 | #include <errno.h> |
47 | #include "nls.h" | |
eb76ca98 | 48 | #include "c.h" |
efb8854f | 49 | #include "closestream.h" |
fd6b7a7f | 50 | |
2ba641e5 | 51 | static const char *idtype[] = { |
ce4030e4 SK |
52 | [PRIO_PROCESS] = N_("process ID"), |
53 | [PRIO_PGRP] = N_("process group ID"), | |
54 | [PRIO_USER] = N_("user ID"), | |
55 | }; | |
56 | ||
9325dbfd | 57 | static void __attribute__((__noreturn__)) usage(void) |
628cab7c | 58 | { |
9325dbfd | 59 | FILE *out = stdout; |
6dcc066f | 60 | fputs(USAGE_HEADER, out); |
ae1ae49e | 61 | fprintf(out, |
ae3ca2aa BS |
62 | _(" %1$s [-n] <priority> [-p|--pid] <pid>...\n" |
63 | " %1$s [-n] <priority> -g|--pgrp <pgid>...\n" | |
64 | " %1$s [-n] <priority> -u|--user <user>...\n"), | |
296351b0 | 65 | program_invocation_short_name); |
451dbcfa BS |
66 | |
67 | fputs(USAGE_SEPARATOR, out); | |
68 | fputs(_("Alter the priority of running processes.\n"), out); | |
69 | ||
6dcc066f | 70 | fputs(USAGE_OPTIONS, out); |
94b1623b SK |
71 | fputs(_(" -n, --priority <num> specify the nice increment value\n"), out); |
72 | fputs(_(" -p, --pid <id> interpret argument as process ID (default)\n"), out); | |
73 | fputs(_(" -g, --pgrp <id> interpret argument as process group ID\n"), out); | |
09638694 | 74 | fputs(_(" -u, --user <name>|<id> interpret argument as username or user ID\n"), out); |
94b1623b | 75 | fputs(USAGE_SEPARATOR, out); |
f45f3ec3 RM |
76 | printf(USAGE_HELP_OPTIONS(24)); |
77 | printf(USAGE_MAN_TAIL("renice(1)")); | |
9325dbfd | 78 | exit(EXIT_SUCCESS); |
628cab7c | 79 | } |
7cfbafda | 80 | |
ce4030e4 | 81 | static int getprio(const int which, const int who, int *prio) |
00b490f0 SK |
82 | { |
83 | errno = 0; | |
84 | *prio = getpriority(which, who); | |
85 | if (*prio == -1 && errno) { | |
ce4030e4 | 86 | warn(_("failed to get priority for %d (%s)"), who, idtype[which]); |
00b490f0 SK |
87 | return -errno; |
88 | } | |
89 | return 0; | |
90 | } | |
91 | ||
ce4030e4 | 92 | static int donice(const int which, const int who, const int prio) |
00b490f0 | 93 | { |
5ebcab66 | 94 | int oldprio, newprio; |
5ebcab66 | 95 | |
ce4030e4 | 96 | if (getprio(which, who, &oldprio) != 0) |
5ebcab66 | 97 | return 1; |
5ebcab66 | 98 | if (setpriority(which, who, prio) < 0) { |
ce4030e4 | 99 | warn(_("failed to set priority for %d (%s)"), who, idtype[which]); |
5ebcab66 SK |
100 | return 1; |
101 | } | |
ce4030e4 | 102 | if (getprio(which, who, &newprio) != 0) |
5ebcab66 | 103 | return 1; |
5ebcab66 | 104 | printf(_("%d (%s) old priority %d, new priority %d\n"), |
ce4030e4 | 105 | who, idtype[which], oldprio, newprio); |
5ebcab66 SK |
106 | return 0; |
107 | } | |
108 | ||
6dbe3af9 | 109 | /* |
5cc224f5 BS |
110 | * Change the priority (the nice value) of processes |
111 | * or groups of processes which are already running. | |
6dbe3af9 | 112 | */ |
00b490f0 | 113 | int main(int argc, char **argv) |
6dbe3af9 KZ |
114 | { |
115 | int which = PRIO_PROCESS; | |
116 | int who = 0, prio, errs = 0; | |
628cab7c | 117 | char *endptr = NULL; |
6dbe3af9 | 118 | |
7eda085c KZ |
119 | setlocale(LC_ALL, ""); |
120 | bindtextdomain(PACKAGE, LOCALEDIR); | |
121 | textdomain(PACKAGE); | |
efb8854f | 122 | atexit(close_stdout); |
7eda085c | 123 | |
628cab7c LJ |
124 | argc--; |
125 | argv++; | |
126 | ||
127 | if (argc == 1) { | |
128 | if (strcmp(*argv, "-h") == 0 || | |
129 | strcmp(*argv, "--help") == 0) | |
9325dbfd | 130 | usage(); |
628cab7c LJ |
131 | |
132 | if (strcmp(*argv, "-v") == 0 || | |
5cc224f5 | 133 | strcmp(*argv, "-V") == 0 || |
628cab7c | 134 | strcmp(*argv, "--version") == 0) { |
6dcc066f SK |
135 | printf(UTIL_LINUX_VERSION); |
136 | return EXIT_SUCCESS; | |
628cab7c | 137 | } |
6dbe3af9 | 138 | } |
628cab7c | 139 | |
0bb01bb0 | 140 | if (*argv && (strcmp(*argv, "-n") == 0 || strcmp(*argv, "--priority") == 0)) { |
7cfbafda KZ |
141 | argc--; |
142 | argv++; | |
143 | } | |
144 | ||
9325dbfd RM |
145 | if (argc < 2) { |
146 | warnx(_("not enough arguments")); | |
147 | errtryhelp(EXIT_FAILURE); | |
148 | } | |
0bb01bb0 | 149 | |
628cab7c | 150 | prio = strtol(*argv, &endptr, 10); |
9325dbfd | 151 | if (*endptr) { |
e2215a85 | 152 | warnx(_("invalid priority '%s'"), *argv); |
9325dbfd RM |
153 | errtryhelp(EXIT_FAILURE); |
154 | } | |
628cab7c LJ |
155 | argc--; |
156 | argv++; | |
157 | ||
6dbe3af9 | 158 | for (; argc > 0; argc--, argv++) { |
628cab7c | 159 | if (strcmp(*argv, "-g") == 0 || strcmp(*argv, "--pgrp") == 0) { |
6dbe3af9 KZ |
160 | which = PRIO_PGRP; |
161 | continue; | |
162 | } | |
628cab7c | 163 | if (strcmp(*argv, "-u") == 0 || strcmp(*argv, "--user") == 0) { |
6dbe3af9 KZ |
164 | which = PRIO_USER; |
165 | continue; | |
166 | } | |
628cab7c | 167 | if (strcmp(*argv, "-p") == 0 || strcmp(*argv, "--pid") == 0) { |
6dbe3af9 KZ |
168 | which = PRIO_PROCESS; |
169 | continue; | |
170 | } | |
171 | if (which == PRIO_USER) { | |
80ca9e20 | 172 | struct passwd *pwd = getpwnam(*argv); |
628cab7c | 173 | |
80ca9e20 SK |
174 | if (pwd != NULL) |
175 | who = pwd->pw_uid; | |
176 | else | |
177 | who = strtol(*argv, &endptr, 10); | |
178 | if (who < 0 || *endptr) { | |
40cebc2d | 179 | warnx(_("unknown user %s"), *argv); |
665b3c85 | 180 | errs = 1; |
6dbe3af9 KZ |
181 | continue; |
182 | } | |
6dbe3af9 | 183 | } else { |
628cab7c LJ |
184 | who = strtol(*argv, &endptr, 10); |
185 | if (who < 0 || *endptr) { | |
09638694 BS |
186 | /* TRANSLATORS: The first %s is one of the above |
187 | * three ID names. Read: "bad value for %s: %s" */ | |
ce4030e4 | 188 | warnx(_("bad %s value: %s"), idtype[which], *argv); |
665b3c85 | 189 | errs = 1; |
6dbe3af9 KZ |
190 | continue; |
191 | } | |
192 | } | |
665b3c85 | 193 | errs |= donice(which, who, prio); |
6dbe3af9 | 194 | } |
628cab7c | 195 | return errs != 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
6dbe3af9 | 196 | } |