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e7145211 | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
3b47c739 | 2 | /* |
1298001e | 3 | * Copyright (C) 2005-2011 Kay Sievers <kay@vrfy.org> |
3b47c739 | 4 | * |
55e9959b KS |
5 | * This program is free software: you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation, either version 2 of the License, or | |
8 | * (at your option) any later version. | |
3b47c739 | 9 | * |
55e9959b KS |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
3b47c739 KS |
14 | */ |
15 | ||
3b47c739 | 16 | #include <errno.h> |
cf0fbc49 TA |
17 | #include <getopt.h> |
18 | #include <stddef.h> | |
3b47c739 KS |
19 | #include <stdio.h> |
20 | #include <stdlib.h> | |
3b47c739 KS |
21 | #include <string.h> |
22 | #include <unistd.h> | |
3b47c739 | 23 | |
dccca82b | 24 | #include "process-util.h" |
1f1a5e8b | 25 | #include "time-util.h" |
44433ebd | 26 | #include "udev-util.h" |
cf0fbc49 | 27 | #include "udev.h" |
5639df9a | 28 | #include "udevadm-util.h" |
d59f11e1 | 29 | |
9ec6e95b | 30 | static void print_help(void) { |
5639df9a | 31 | printf("%s control OPTION\n\n" |
5ac0162c LP |
32 | "Control the udev daemon.\n\n" |
33 | " -h --help Show this help\n" | |
5639df9a | 34 | " -V --version Show package version\n" |
5ac0162c LP |
35 | " -e --exit Instruct the daemon to cleanup and exit\n" |
36 | " -l --log-priority=LEVEL Set the udev log level for the daemon\n" | |
37 | " -s --stop-exec-queue Do not execute events, queue only\n" | |
38 | " -S --start-exec-queue Execute events, flush queue\n" | |
39 | " -R --reload Reload rules and databases\n" | |
40 | " -p --property=KEY=VALUE Set a global property for all events\n" | |
41 | " -m --children-max=N Maximum number of children\n" | |
a04a9027 | 42 | " -t --timeout=SECONDS Maximum time to block for a reply\n" |
5ac0162c | 43 | , program_invocation_short_name); |
d59f11e1 | 44 | } |
3b47c739 | 45 | |
9ec6e95b | 46 | static int adm_control(struct udev *udev, int argc, char *argv[]) { |
44433ebd | 47 | _cleanup_udev_ctrl_unref_ struct udev_ctrl *uctrl = NULL; |
912541b0 | 48 | int timeout = 60; |
7643ac9a | 49 | int rc = 1, c; |
2b725651 | 50 | |
912541b0 | 51 | static const struct option options[] = { |
7643ac9a ZJS |
52 | { "exit", no_argument, NULL, 'e' }, |
53 | { "log-priority", required_argument, NULL, 'l' }, | |
54 | { "stop-exec-queue", no_argument, NULL, 's' }, | |
55 | { "start-exec-queue", no_argument, NULL, 'S' }, | |
56 | { "reload", no_argument, NULL, 'R' }, | |
57 | { "reload-rules", no_argument, NULL, 'R' }, /* alias for -R */ | |
58 | { "property", required_argument, NULL, 'p' }, | |
59 | { "env", required_argument, NULL, 'p' }, /* alias for -p */ | |
60 | { "children-max", required_argument, NULL, 'm' }, | |
61 | { "timeout", required_argument, NULL, 't' }, | |
5639df9a | 62 | { "version", no_argument, NULL, 'V' }, |
7643ac9a | 63 | { "help", no_argument, NULL, 'h' }, |
912541b0 KS |
64 | {} |
65 | }; | |
3b47c739 | 66 | |
fba868fa | 67 | if (must_be_root() < 0) |
912541b0 | 68 | return 1; |
2b725651 | 69 | |
912541b0 KS |
70 | uctrl = udev_ctrl_new(udev); |
71 | if (uctrl == NULL) | |
72 | return 2; | |
2b725651 | 73 | |
5639df9a | 74 | while ((c = getopt_long(argc, argv, "el:sSRp:m:t:Vh", options, NULL)) >= 0) |
7643ac9a | 75 | switch (c) { |
912541b0 KS |
76 | case 'e': |
77 | if (udev_ctrl_send_exit(uctrl, timeout) < 0) | |
78 | rc = 2; | |
79 | else | |
80 | rc = 0; | |
81 | break; | |
82 | case 'l': { | |
83 | int i; | |
ff2c503d | 84 | |
912541b0 KS |
85 | i = util_log_priority(optarg); |
86 | if (i < 0) { | |
1f1a5e8b | 87 | log_error("invalid number '%s'", optarg); |
44433ebd | 88 | return rc; |
912541b0 KS |
89 | } |
90 | if (udev_ctrl_send_set_log_level(uctrl, util_log_priority(optarg), timeout) < 0) | |
91 | rc = 2; | |
92 | else | |
93 | rc = 0; | |
94 | break; | |
95 | } | |
96 | case 's': | |
97 | if (udev_ctrl_send_stop_exec_queue(uctrl, timeout) < 0) | |
98 | rc = 2; | |
99 | else | |
100 | rc = 0; | |
101 | break; | |
102 | case 'S': | |
103 | if (udev_ctrl_send_start_exec_queue(uctrl, timeout) < 0) | |
104 | rc = 2; | |
105 | else | |
106 | rc = 0; | |
107 | break; | |
108 | case 'R': | |
109 | if (udev_ctrl_send_reload(uctrl, timeout) < 0) | |
110 | rc = 2; | |
111 | else | |
112 | rc = 0; | |
113 | break; | |
114 | case 'p': | |
115 | if (strchr(optarg, '=') == NULL) { | |
1f1a5e8b | 116 | log_error("expect <KEY>=<value> instead of '%s'", optarg); |
44433ebd | 117 | return rc; |
912541b0 KS |
118 | } |
119 | if (udev_ctrl_send_set_env(uctrl, optarg, timeout) < 0) | |
120 | rc = 2; | |
121 | else | |
122 | rc = 0; | |
123 | break; | |
124 | case 'm': { | |
125 | char *endp; | |
126 | int i; | |
ff2c503d | 127 | |
912541b0 KS |
128 | i = strtoul(optarg, &endp, 0); |
129 | if (endp[0] != '\0' || i < 1) { | |
1f1a5e8b | 130 | log_error("invalid number '%s'", optarg); |
44433ebd | 131 | return rc; |
912541b0 KS |
132 | } |
133 | if (udev_ctrl_send_set_children_max(uctrl, i, timeout) < 0) | |
134 | rc = 2; | |
135 | else | |
136 | rc = 0; | |
137 | break; | |
138 | } | |
139 | case 't': { | |
1f1a5e8b | 140 | usec_t s; |
912541b0 | 141 | int seconds; |
1f1a5e8b | 142 | int r; |
ff2c503d | 143 | |
1f1a5e8b SS |
144 | r = parse_sec(optarg, &s); |
145 | if (r < 0) | |
146 | return log_error_errno(r, "Failed to parse timeout value '%s'.", optarg); | |
147 | ||
148 | if (((s + USEC_PER_SEC - 1) / USEC_PER_SEC) > INT_MAX) | |
149 | log_error("Timeout value is out of range."); | |
150 | else { | |
151 | seconds = s != USEC_INFINITY ? (int) ((s + USEC_PER_SEC - 1) / USEC_PER_SEC) : INT_MAX; | |
912541b0 | 152 | timeout = seconds; |
1f1a5e8b SS |
153 | rc = 0; |
154 | } | |
912541b0 KS |
155 | break; |
156 | } | |
5639df9a YW |
157 | case 'V': |
158 | print_version(); | |
159 | rc = 0; | |
160 | break; | |
912541b0 KS |
161 | case 'h': |
162 | print_help(); | |
163 | rc = 0; | |
164 | break; | |
165 | } | |
5cc4112e | 166 | |
7643ac9a | 167 | if (optind < argc) |
1f1a5e8b | 168 | log_error("Extraneous argument: %s", argv[optind]); |
912541b0 | 169 | else if (optind == 1) |
1f1a5e8b | 170 | log_error("Option missing"); |
912541b0 | 171 | return rc; |
3b47c739 | 172 | } |
1985c76e KS |
173 | |
174 | const struct udevadm_cmd udevadm_control = { | |
912541b0 KS |
175 | .name = "control", |
176 | .cmd = adm_control, | |
5ac0162c | 177 | .help = "Control the udev daemon", |
1985c76e | 178 | }; |