chiark / gitweb /
udevadm,..: make --help output of udev tools more like the output of the various...
[elogind.git] / src / udev / udevadm-test-builtin.c
1 /*
2  * Copyright (C) 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  * You should have received a copy of the GNU General Public License
15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
16  */
17
18 #include <stdlib.h>
19 #include <stddef.h>
20 #include <string.h>
21 #include <stdio.h>
22 #include <unistd.h>
23 #include <errno.h>
24 #include <dirent.h>
25 #include <fcntl.h>
26 #include <getopt.h>
27 #include <signal.h>
28 #include <time.h>
29 #include <sys/inotify.h>
30 #include <sys/poll.h>
31 #include <sys/stat.h>
32 #include <sys/types.h>
33
34 #include "udev.h"
35
36 static void help(struct udev *udev) {
37         printf("%s builtin [--help] COMMAND SYSPATH\n\n"
38                "Test a built-in command.\n\n"
39                "  -h --help     Print this message\n"
40                "     --version  Print version of the program\n\n"
41                "Commands:\n"
42                , program_invocation_short_name);
43
44         udev_builtin_list(udev);
45 }
46
47 static int adm_builtin(struct udev *udev, int argc, char *argv[]) {
48         static const struct option options[] = {
49                 { "help", no_argument, NULL, 'h' },
50                 {}
51         };
52         char *command = NULL;
53         char *syspath = NULL;
54         char filename[UTIL_PATH_SIZE];
55         struct udev_device *dev = NULL;
56         enum udev_builtin_cmd cmd;
57         int rc = EXIT_SUCCESS, c;
58
59         while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
60                 switch (c) {
61                 case 'h':
62                         help(udev);
63                         goto out;
64                 }
65
66         command = argv[optind++];
67         if (command == NULL) {
68                 fprintf(stderr, "command missing\n");
69                 help(udev);
70                 rc = 2;
71                 goto out;
72         }
73
74         syspath = argv[optind++];
75         if (syspath == NULL) {
76                 fprintf(stderr, "syspath missing\n");
77                 rc = 3;
78                 goto out;
79         }
80
81         udev_builtin_init(udev);
82
83         cmd = udev_builtin_lookup(command);
84         if (cmd >= UDEV_BUILTIN_MAX) {
85                 fprintf(stderr, "unknown command '%s'\n", command);
86                 help(udev);
87                 rc = 5;
88                 goto out;
89         }
90
91         /* add /sys if needed */
92         if (!startswith(syspath, "/sys"))
93                 strscpyl(filename, sizeof(filename), "/sys", syspath, NULL);
94         else
95                 strscpy(filename, sizeof(filename), syspath);
96         util_remove_trailing_chars(filename, '/');
97
98         dev = udev_device_new_from_syspath(udev, filename);
99         if (dev == NULL) {
100                 fprintf(stderr, "unable to open device '%s'\n\n", filename);
101                 rc = 4;
102                 goto out;
103         }
104
105         rc = udev_builtin_run(dev, cmd, command, true);
106         if (rc < 0) {
107                 fprintf(stderr, "error executing '%s', exit code %i\n\n", command, rc);
108                 rc = 6;
109         }
110 out:
111         udev_device_unref(dev);
112         udev_builtin_exit(udev);
113         return rc;
114 }
115
116 const struct udevadm_cmd udevadm_test_builtin = {
117         .name = "test-builtin",
118         .cmd = adm_builtin,
119         .help = "Test a built-in command",
120         .debug = true,
121 };