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663996b3 MS |
1 | /* |
2 | * Copyright (C) 2005-2011 Kay Sievers <kay@vrfy.org> | |
3 | * | |
4 | * This program is free software: you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation, either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | */ | |
14 | ||
15 | #include <time.h> | |
16 | #include <errno.h> | |
17 | #include <stdio.h> | |
18 | #include <stdlib.h> | |
19 | #include <stddef.h> | |
20 | #include <string.h> | |
21 | #include <unistd.h> | |
22 | #include <getopt.h> | |
23 | #include <sys/types.h> | |
24 | #include <sys/socket.h> | |
25 | #include <sys/wait.h> | |
26 | #include <sys/un.h> | |
27 | ||
28 | #include "udev.h" | |
60f067b4 | 29 | #include "udev-util.h" |
663996b3 | 30 | |
5eef597e | 31 | static void print_help(void) { |
663996b3 | 32 | printf("Usage: udevadm control COMMAND\n" |
60f067b4 JS |
33 | " -e,--exit instruct the daemon to cleanup and exit\n" |
34 | " -l,--log-priority=LEVEL set the udev log level for the daemon\n" | |
35 | " -s,--stop-exec-queue do not execute events, queue only\n" | |
36 | " -S,--start-exec-queue execute events, flush queue\n" | |
37 | " -R,--reload reload rules and databases\n" | |
38 | " -p,--property=KEY=VALUE set a global property for all events\n" | |
39 | " -m,--children-max=N maximum number of children\n" | |
40 | " --timeout=SECONDS maximum time to block for a reply\n" | |
41 | " -h,--help print this help text\n\n"); | |
663996b3 MS |
42 | } |
43 | ||
5eef597e | 44 | static int adm_control(struct udev *udev, int argc, char *argv[]) { |
60f067b4 | 45 | _cleanup_udev_ctrl_unref_ struct udev_ctrl *uctrl = NULL; |
663996b3 | 46 | int timeout = 60; |
60f067b4 | 47 | int rc = 1, c; |
663996b3 MS |
48 | |
49 | static const struct option options[] = { | |
60f067b4 JS |
50 | { "exit", no_argument, NULL, 'e' }, |
51 | { "log-priority", required_argument, NULL, 'l' }, | |
52 | { "stop-exec-queue", no_argument, NULL, 's' }, | |
53 | { "start-exec-queue", no_argument, NULL, 'S' }, | |
54 | { "reload", no_argument, NULL, 'R' }, | |
55 | { "reload-rules", no_argument, NULL, 'R' }, /* alias for -R */ | |
56 | { "property", required_argument, NULL, 'p' }, | |
57 | { "env", required_argument, NULL, 'p' }, /* alias for -p */ | |
58 | { "children-max", required_argument, NULL, 'm' }, | |
59 | { "timeout", required_argument, NULL, 't' }, | |
60 | { "help", no_argument, NULL, 'h' }, | |
663996b3 MS |
61 | {} |
62 | }; | |
63 | ||
64 | if (getuid() != 0) { | |
65 | fprintf(stderr, "root privileges required\n"); | |
66 | return 1; | |
67 | } | |
68 | ||
69 | uctrl = udev_ctrl_new(udev); | |
70 | if (uctrl == NULL) | |
71 | return 2; | |
72 | ||
60f067b4 JS |
73 | while ((c = getopt_long(argc, argv, "el:sSRp:m:h", options, NULL)) >= 0) |
74 | switch (c) { | |
663996b3 MS |
75 | case 'e': |
76 | if (udev_ctrl_send_exit(uctrl, timeout) < 0) | |
77 | rc = 2; | |
78 | else | |
79 | rc = 0; | |
80 | break; | |
81 | case 'l': { | |
82 | int i; | |
83 | ||
84 | i = util_log_priority(optarg); | |
85 | if (i < 0) { | |
86 | fprintf(stderr, "invalid number '%s'\n", optarg); | |
60f067b4 | 87 | return rc; |
663996b3 MS |
88 | } |
89 | if (udev_ctrl_send_set_log_level(uctrl, util_log_priority(optarg), timeout) < 0) | |
90 | rc = 2; | |
91 | else | |
92 | rc = 0; | |
93 | break; | |
94 | } | |
95 | case 's': | |
96 | if (udev_ctrl_send_stop_exec_queue(uctrl, timeout) < 0) | |
97 | rc = 2; | |
98 | else | |
99 | rc = 0; | |
100 | break; | |
101 | case 'S': | |
102 | if (udev_ctrl_send_start_exec_queue(uctrl, timeout) < 0) | |
103 | rc = 2; | |
104 | else | |
105 | rc = 0; | |
106 | break; | |
107 | case 'R': | |
108 | if (udev_ctrl_send_reload(uctrl, timeout) < 0) | |
109 | rc = 2; | |
110 | else | |
111 | rc = 0; | |
112 | break; | |
113 | case 'p': | |
114 | if (strchr(optarg, '=') == NULL) { | |
115 | fprintf(stderr, "expect <KEY>=<value> instead of '%s'\n", optarg); | |
60f067b4 | 116 | return rc; |
663996b3 MS |
117 | } |
118 | if (udev_ctrl_send_set_env(uctrl, optarg, timeout) < 0) | |
119 | rc = 2; | |
120 | else | |
121 | rc = 0; | |
122 | break; | |
123 | case 'm': { | |
124 | char *endp; | |
125 | int i; | |
126 | ||
127 | i = strtoul(optarg, &endp, 0); | |
128 | if (endp[0] != '\0' || i < 1) { | |
129 | fprintf(stderr, "invalid number '%s'\n", optarg); | |
60f067b4 | 130 | return rc; |
663996b3 MS |
131 | } |
132 | if (udev_ctrl_send_set_children_max(uctrl, i, timeout) < 0) | |
133 | rc = 2; | |
134 | else | |
135 | rc = 0; | |
136 | break; | |
137 | } | |
138 | case 't': { | |
139 | int seconds; | |
140 | ||
141 | seconds = atoi(optarg); | |
142 | if (seconds >= 0) | |
143 | timeout = seconds; | |
144 | else | |
145 | fprintf(stderr, "invalid timeout value\n"); | |
146 | break; | |
147 | } | |
148 | case 'h': | |
149 | print_help(); | |
150 | rc = 0; | |
151 | break; | |
152 | } | |
663996b3 | 153 | |
60f067b4 JS |
154 | if (optind < argc) |
155 | fprintf(stderr, "Extraneous argument: %s\n", argv[optind]); | |
663996b3 | 156 | else if (optind == 1) |
60f067b4 | 157 | fprintf(stderr, "Option missing\n"); |
663996b3 MS |
158 | return rc; |
159 | } | |
160 | ||
161 | const struct udevadm_cmd udevadm_control = { | |
162 | .name = "control", | |
163 | .cmd = adm_control, | |
164 | .help = "control the udev daemon", | |
165 | }; |