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72c51a9e GSB |
1 | /* |
2 | * kmod-insmod - insert modules into linux kernel using libkmod. | |
3 | * | |
4 | * Copyright (C) 2011 ProFUSION embedded systems | |
5 | * | |
cb451f35 LDM |
6 | * This program is free software: you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 2 of the License, or | |
9 | * (at your option) any later version. | |
72c51a9e GSB |
10 | * |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
cb451f35 LDM |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. | |
72c51a9e | 15 | * |
cb451f35 LDM |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
72c51a9e | 18 | */ |
cb451f35 | 19 | |
72c51a9e GSB |
20 | #include <stdio.h> |
21 | #include <stdlib.h> | |
22 | #include <getopt.h> | |
23 | #include <errno.h> | |
24 | #include <string.h> | |
25 | #include "libkmod.h" | |
26 | ||
27 | ||
28 | static const char cmdopts_s[] = "psfVh"; | |
29 | static const struct option cmdopts[] = { | |
30 | {"version", no_argument, 0, 'V'}, | |
31 | {"help", no_argument, 0, 'h'}, | |
32 | {NULL, 0, 0, 0} | |
33 | }; | |
34 | ||
35 | static void help(const char *progname) | |
36 | { | |
37 | fprintf(stderr, | |
38 | "Usage:\n" | |
39 | "\t%s [options] filename [args]\n" | |
40 | "Options:\n" | |
41 | "\t-V, --version show version\n" | |
42 | "\t-h, --help show this help\n", | |
43 | progname); | |
44 | } | |
45 | ||
46 | static const char *mod_strerror(int err) | |
47 | { | |
48 | switch (err) { | |
49 | case ENOEXEC: | |
50 | return "Invalid module format"; | |
51 | case ENOENT: | |
52 | return "Unknown symbol in module"; | |
53 | case ESRCH: | |
54 | return "Module has wrong symbol version"; | |
55 | case EINVAL: | |
56 | return "Invalid parameters"; | |
57 | default: | |
58 | return strerror(err); | |
59 | } | |
60 | } | |
61 | ||
ad602696 | 62 | static int do_insmod(int argc, char *argv[]) |
72c51a9e GSB |
63 | { |
64 | struct kmod_ctx *ctx; | |
65 | struct kmod_module *mod; | |
66 | const char *filename; | |
67 | char *opts = NULL; | |
68 | size_t optslen = 0; | |
69 | int i, err; | |
2411c077 | 70 | const char *null_config = NULL; |
72c51a9e GSB |
71 | |
72 | for (;;) { | |
73 | int c, idx = 0; | |
74 | c = getopt_long(argc, argv, cmdopts_s, cmdopts, &idx); | |
75 | if (c == -1) | |
76 | break; | |
77 | switch (c) { | |
78 | case 'p': | |
79 | case 's': | |
80 | case 'f': | |
81 | /* ignored, for compatibility only */ | |
82 | break; | |
83 | case 'h': | |
84 | help(argv[0]); | |
85 | return EXIT_SUCCESS; | |
86 | case 'V': | |
87 | puts(PACKAGE " version " VERSION); | |
88 | return EXIT_SUCCESS; | |
89 | case '?': | |
90 | return EXIT_FAILURE; | |
91 | default: | |
92 | fprintf(stderr, | |
93 | "Error: unexpected getopt_long() value '%c'.\n", | |
94 | c); | |
95 | return EXIT_FAILURE; | |
96 | } | |
97 | } | |
98 | ||
99 | if (optind >= argc) { | |
100 | fprintf(stderr, "Error: missing filename.\n"); | |
101 | return EXIT_FAILURE; | |
102 | } | |
103 | ||
104 | filename = argv[optind]; | |
105 | if (strcmp(filename, "-") == 0) { | |
106 | fputs("Error: this tool does not support loading from stdin!\n", | |
107 | stderr); | |
108 | return EXIT_FAILURE; | |
109 | } | |
110 | ||
111 | for (i = optind + 1; i < argc; i++) { | |
112 | size_t len = strlen(argv[i]); | |
113 | void *tmp = realloc(opts, optslen + len + 2); | |
114 | if (tmp == NULL) { | |
115 | fputs("Error: out of memory\n", stderr); | |
116 | free(opts); | |
117 | return EXIT_FAILURE; | |
118 | } | |
119 | opts = tmp; | |
120 | if (optslen > 0) { | |
121 | opts[optslen] = ' '; | |
122 | optslen++; | |
123 | } | |
124 | memcpy(opts + optslen, argv[i], len); | |
125 | optslen += len; | |
126 | opts[optslen] = '\0'; | |
127 | } | |
128 | ||
2411c077 | 129 | ctx = kmod_new(NULL, &null_config); |
72c51a9e GSB |
130 | if (!ctx) { |
131 | fputs("Error: kmod_new() failed!\n", stderr); | |
132 | free(opts); | |
133 | return EXIT_FAILURE; | |
134 | } | |
135 | ||
136 | err = kmod_module_new_from_path(ctx, filename, &mod); | |
137 | if (err < 0) { | |
138 | fprintf(stderr, "Error: could not load module %s: %s\n", | |
139 | filename, strerror(-err)); | |
140 | goto end; | |
141 | } | |
142 | ||
143 | err = kmod_module_insert_module(mod, 0, opts); | |
144 | if (err < 0) { | |
145 | fprintf(stderr, "Error: could not insert module %s: %s\n", | |
146 | filename, mod_strerror(-err)); | |
147 | } | |
148 | kmod_module_unref(mod); | |
149 | ||
150 | end: | |
151 | kmod_unref(ctx); | |
152 | free(opts); | |
153 | return err >= 0 ? EXIT_SUCCESS : EXIT_FAILURE; | |
154 | } | |
ad602696 LDM |
155 | |
156 | #ifndef KMOD_BUNDLE_TOOL | |
157 | int main(int argc, char *argv[]) | |
158 | { | |
159 | return do_insmod(argc, argv); | |
160 | } | |
161 | ||
162 | #else | |
163 | #include "kmod.h" | |
164 | ||
165 | const struct kmod_cmd kmod_cmd_compat_insmod = { | |
166 | .name = "insmod", | |
167 | .cmd = do_insmod, | |
168 | .help = "compat insmod command", | |
169 | }; | |
170 | ||
171 | #endif |