4 * Copyright (C) 2011 Kay Sievers <kay.sievers@vrfy.org>
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.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
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/>.
33 static struct kmod_ctx *ctx;
35 static int command_do(struct kmod_module *module, const char *type, const char *command, const char *cmdline_opts)
37 const char *modname = kmod_module_get_name(module);
39 size_t cmdlen, cmdline_opts_len, varlen;
42 if (cmdline_opts == NULL)
44 cmdline_opts_len = strlen(cmdline_opts);
46 cmd = strdup(command);
50 varlen = sizeof("$CMDLINE_OPTS") - 1;
51 while ((p = strstr(cmd, "$CMDLINE_OPTS")) != NULL) {
52 size_t prefixlen = p - cmd;
53 size_t suffixlen = cmdlen - prefixlen - varlen;
54 size_t slen = cmdlen - varlen + cmdline_opts_len;
55 char *suffix = p + varlen;
56 char *s = malloc(slen + 1);
61 memcpy(s, cmd, p - cmd);
62 memcpy(s + prefixlen, cmdline_opts, cmdline_opts_len);
63 memcpy(s + prefixlen + cmdline_opts_len, suffix, suffixlen);
71 setenv("MODPROBE_MODULE", modname, 1);
73 unsetenv("MODPROBE_MODULE");
74 if (ret == -1 || WEXITSTATUS(ret)) {
75 //LOG("Error running %s command for %s\n", type, modname);
77 ret = -WEXITSTATUS(ret);
85 static int insmod_do_dependencies(struct kmod_module *parent);
86 static int insmod_do_soft_dependencies(struct kmod_module *mod, struct kmod_list *deps);
88 static int insmod_do_deps_list(struct kmod_module *parent, struct kmod_list *deps, unsigned stop_on_errors)
93 kmod_list_foreach(d, deps) {
94 struct kmod_module *dm = kmod_module_get_module(d);
95 struct kmod_list *pre = NULL, *post = NULL;
96 const char *cmd, *opts, *dmname = kmod_module_get_name(dm);
100 r = insmod_do_dependencies(dm);
102 //WRN("could not insert dependencies of '%s': %s\n", dmname, strerror(-r));
106 r = kmod_module_get_softdeps(dm, &pre, &post);
108 //WRN("could not get softdeps of '%s': %s\n", dmname, strerror(-r));
112 r = insmod_do_soft_dependencies(dm, pre);
114 //WRN("could not insert pre softdeps of '%s': %s\n", dmname, strerror(-r));
118 state = kmod_module_get_initstate(dm);
119 if (state == KMOD_MODULE_LIVE ||
120 state == KMOD_MODULE_COMING ||
121 state == KMOD_MODULE_BUILTIN)
124 cmd = kmod_module_get_install_commands(dm);
126 r = command_do(dm, "install", cmd, NULL);
128 //WRN("failed to execute install command of '%s':" " %s\n", dmname, strerror(-r));
134 opts = kmod_module_get_options(dm);
136 r = kmod_module_insert_module(dm, 0, opts);
138 //WRN("could not insert '%s': %s\n", dmname, strerror(-r));
143 r = insmod_do_soft_dependencies(dm, post);
145 //WRN("could not insert post softdeps of '%s': %s\n", dmname, strerror(-r));
149 kmod_module_unref_list(pre);
150 kmod_module_unref_list(post);
151 kmod_module_unref(dm);
156 kmod_module_unref_list(pre);
157 kmod_module_unref_list(post);
158 kmod_module_unref(dm);
168 static int insmod_do_soft_dependencies(struct kmod_module *mod, struct kmod_list *deps)
170 return insmod_do_deps_list(mod, deps, 0);
173 static int insmod_do_dependencies(struct kmod_module *parent)
175 struct kmod_list *deps = kmod_module_get_dependencies(parent);
176 int err = insmod_do_deps_list(parent, deps, 1);
177 kmod_module_unref_list(deps);
181 static int insmod_do(struct kmod_module *mod, const char *extra_opts)
183 const char *modname = kmod_module_get_name(mod);
184 const char *conf_opts = kmod_module_get_options(mod);
185 struct kmod_list *pre = NULL, *post = NULL;
191 err = kmod_module_get_softdeps(mod, &pre, &post);
193 //WRN("could not get softdeps of '%s': %s\n", modname, strerror(-err));
197 err = insmod_do_soft_dependencies(mod, pre);
199 //WRN("could not insert pre softdeps of '%s': %s\n", modname, strerror(-err));
203 cmd = kmod_module_get_install_commands(mod);
205 err = command_do(mod, "install", cmd, extra_opts);
209 state = kmod_module_get_initstate(mod);
210 if (state == KMOD_MODULE_BUILTIN || state == KMOD_MODULE_LIVE)
214 * At this point it's not possible to be a install/remove command
215 * anymore. So if we can't get module's path, it's because it was
216 * really intended to be a module and it doesn't exist
218 if (kmod_module_get_path(mod) == NULL) {
219 //LOG("Module %s not found.\n", modname);
223 err = insmod_do_dependencies(mod);
227 if (conf_opts || extra_opts) {
228 if (conf_opts == NULL)
229 opts = strdup(extra_opts);
230 else if (extra_opts == NULL)
231 opts = strdup(conf_opts);
232 else if (asprintf(&opts, "%s %s", conf_opts, extra_opts) < 0)
241 err = kmod_module_insert_module(mod, 0, opts);
246 err = insmod_do_soft_dependencies(mod, post);
248 //WRN("could not insert post softdeps of '%s': %s\n", modname, strerror(-err));
253 kmod_module_unref_list(pre);
254 kmod_module_unref_list(post);
259 static int insmod_path(struct kmod_ctx *ctx, const char *path, const char *extra_options)
261 struct kmod_module *mod;
264 err = kmod_module_new_from_path(ctx, path, &mod);
266 //LOG("Module %s not found.\n", path);
269 err = insmod_do(mod, extra_options);
270 kmod_module_unref(mod);
274 static int insmod_alias(struct kmod_ctx *ctx, const char *alias, const char *extra_options)
276 struct kmod_list *l, *list = NULL;
277 struct kmod_list *filtered = NULL;
280 err = kmod_module_new_from_lookup(ctx, alias, &list);
285 //LOG("Module %s not found.\n", alias);
289 err = kmod_module_get_filtered_blacklist(ctx, list, &filtered);
290 kmod_module_unref_list(list);
292 //LOG("Could not filter alias list!\n");
297 kmod_list_foreach(l, list) {
298 struct kmod_module *mod = kmod_module_get_module(l);
299 err = insmod_do(mod, extra_options);
300 kmod_module_unref(mod);
305 kmod_module_unref_list(list);
309 static int insmod(struct kmod_ctx *ctx, const char *name, const char *extra_options)
312 if (stat(name, &st) == 0)
313 return insmod_path(ctx, name, extra_options);
315 return insmod_alias(ctx, name, extra_options);
318 static int builtin_kmod(struct udev_device *dev, int argc, char *argv[], bool test)
320 struct udev *udev = udev_device_get_udev(dev);
327 err(udev, "missing command + argument\n");
331 for (i = 2; argv[i]; i++) {
332 info(udev, "%s '%s'\n", argv[1], argv[i]);
333 insmod(ctx, argv[i], NULL);
339 static int builtin_kmod_load(struct udev *udev)
342 ctx = kmod_new(NULL, NULL);
346 info(udev, "load module index\n");
350 static int builtin_kmod_unload(struct udev *udev)
353 info(udev, "unload module index\n");
357 const struct udev_builtin udev_builtin_kmod = {
360 .load = builtin_kmod_load,
361 .unload = builtin_kmod_unload,
362 .help = "kernel module loader",