*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation version 2.1.
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* @ctx: kmod library context
*
* Retrieve stored data pointer from library context. This might be useful
- * to access from callbacks like a custom logging function.
+ * to access from callbacks.
*
* Returns: stored userdata
*/
* release the resources of the kmod library context.
*
* @dirname: what to consider as linux module's directory, if NULL
- * defaults to /lib/modules/`uname -r`
+ * defaults to /lib/modules/`uname -r`.
* @config_paths: ordered array of paths (directories or files) where
- * to load user-defined configuration parameters such as
- * alias, blacklists, commands (install, remove). If
- * NULL defaults to /run/modprobe.d, /etc/modprobe.d and
- * /lib/modprobe.d. This array must be null terminated.
+ * to load from user-defined configuration parameters such as
+ * alias, blacklists, commands (install, remove). If
+ * NULL defaults to /run/modprobe.d, /etc/modprobe.d and
+ * /lib/modprobe.d. Give an empty vector if configuration should
+ * not be read. This array must be null terminated.
*
* Returns: a new kmod library context
*/
*
* Drop a reference of the kmod library context. If the refcount
* reaches zero, the resources of the context will be released.
- *
*/
KMOD_EXPORT struct kmod_ctx *kmod_unref(struct kmod_ctx *ctx)
{
* The built-in logging writes to stderr. It can be
* overridden by a custom function, to plug log messages
* into the user's logging functionality.
- *
*/
KMOD_EXPORT void kmod_set_log_fn(struct kmod_ctx *ctx,
void (*log_fn)(void *data,
}
struct kmod_module *kmod_pool_get_module(struct kmod_ctx *ctx,
- const char *name)
+ const char *key)
{
struct kmod_module *mod;
- mod = kmod_hash_find(ctx->modules_by_name, name);
+ mod = kmod_hash_find(ctx->modules_by_name, key);
- DBG(ctx, "get module name='%s' found=%p\n", name, mod);
+ DBG(ctx, "get module name='%s' found=%p\n", key, mod);
return mod;
}
-void kmod_pool_add_module(struct kmod_ctx *ctx, struct kmod_module *mod)
+void kmod_pool_add_module(struct kmod_ctx *ctx, struct kmod_module *mod,
+ const char *key)
{
- const char *name = kmod_module_get_name(mod);
-
- DBG(ctx, "add %p name='%s'\n", mod, name);
+ DBG(ctx, "add %p key='%s'\n", mod, key);
- kmod_hash_add(ctx->modules_by_name, name, mod);
+ kmod_hash_add(ctx->modules_by_name, key, mod);
}
-void kmod_pool_del_module(struct kmod_ctx *ctx, struct kmod_module *mod)
+void kmod_pool_del_module(struct kmod_ctx *ctx, struct kmod_module *mod,
+ const char *key)
{
- const char *name = kmod_module_get_name(mod);
+ DBG(ctx, "del %p key='%s'\n", mod, key);
- DBG(ctx, "del %p name='%s'\n", mod, name);
-
- kmod_hash_del(ctx->modules_by_name, name);
+ kmod_hash_del(ctx->modules_by_name, key);
}
static int kmod_lookup_alias_from_alias_bin(struct kmod_ctx *ctx,
index_file_close(idx);
}
- for (realname = realnames; realname; realname = realnames->next) {
+ for (realname = realnames; realname; realname = realname->next) {
struct kmod_module *mod;
- err = kmod_module_new_from_name(ctx, realname->value, &mod);
+ err = kmod_module_new_from_alias(ctx, name, realname->value, &mod);
if (err < 0) {
ERR(ctx, "%s\n", strerror(-err));
goto fail;
if (fnmatch(aliasname, name, 0) == 0) {
struct kmod_module *mod;
- err = kmod_module_new_from_name(ctx, modname, &mod);
+ err = kmod_module_new_from_alias(ctx, aliasname,
+ modname, &mod);
if (err < 0) {
ERR(ctx, "%s\n", strerror(-err));
goto fail;
return err;
}
+int kmod_lookup_alias_from_commands(struct kmod_ctx *ctx, const char *name,
+ struct kmod_list **list)
+{
+ struct kmod_config *config = ctx->config;
+ struct kmod_list *l, *node;
+ int err, nmatch = 0;
+
+ kmod_list_foreach(l, config->install_commands) {
+ const char *modname = kmod_command_get_modname(l);
+
+ if (streq(modname, name)) {
+ const char *cmd = kmod_command_get_command(l);
+ struct kmod_module *mod;
+
+ err = kmod_module_new_from_name(ctx, modname, &mod);
+ if (err < 0) {
+ ERR(ctx, "%s\n", strerror(-err));
+ return err;
+ }
+
+ node = kmod_list_append(*list, mod);
+ if (node == NULL) {
+ ERR(ctx, "out of memory\n");
+ return -ENOMEM;
+ }
+
+ *list = node;
+ nmatch = 1;
+
+ kmod_module_set_install_commands(mod, cmd);
+
+ /*
+ * match only the first one, like modprobe from
+ * module-init-tools does
+ */
+ break;
+ }
+ }
+
+ if (nmatch)
+ return nmatch;
+
+ kmod_list_foreach(l, config->remove_commands) {
+ const char *modname = kmod_command_get_modname(l);
+
+ if (streq(modname, name)) {
+ const char *cmd = kmod_command_get_command(l);
+ struct kmod_module *mod;
+
+ err = kmod_module_new_from_name(ctx, modname, &mod);
+ if (err < 0) {
+ ERR(ctx, "%s\n", strerror(-err));
+ return err;
+ }
+
+ node = kmod_list_append(*list, mod);
+ if (node == NULL) {
+ ERR(ctx, "out of memory\n");
+ return -ENOMEM;
+ }
+
+ *list = node;
+ nmatch = 1;
+
+ kmod_module_set_remove_commands(mod, cmd);
+
+ /*
+ * match only the first one, like modprobe from
+ * module-init-tools does
+ */
+ break;
+ }
+ }
+
+ return nmatch;
+}
+
/**
* kmod_module_get_filtered_blacklist:
* @ctx: kmod library context
- * @input: list to be filtered with blacklist
+ * @input: list of kmod_module to be filtered with blacklist
* @output: where to save the new list
*
* Given a list @input, this function filter it out with config's blacklist
return -ENOMEM;
}
+/**
+ * kmod_load_resources:
+ * @ctx: kmod library context
+ *
+ * Load indexes and keep them open in @ctx. This way it's faster to lookup
+ * information within the indexes. If this function is not called before a
+ * search, the necessary index is always opened and closed.
+ *
+ * If user will do more than one or two lookups, insertions, deletions, most
+ * likely it's good to call this function first. Particularly in a daemon like
+ * udev that on bootup issues hundreds of calls to lookup the index, calling
+ * this function will speedup the searches.
+ *
+ * Returns: 0 on success or < 0 otherwise.
+ */
KMOD_EXPORT int kmod_load_resources(struct kmod_ctx *ctx)
{
- char path[PATH_MAX];
size_t i;
if (ctx == NULL)
return -ENOENT;
for (i = 0; i < ARRAY_SIZE(index_files); i++) {
- if (ctx->indexes[i] == NULL) {
- const char *fn = index_files[i];
- size_t fnlen = strlen(fn);
- const char *prefix = "";
- const char *suffix = "";
-
- if (fn[0] != '/')
- prefix = ctx->dirname;
-
- if (fnlen < 4 || !streq(fn + fnlen - 4, ".bin"))
- suffix = ".bin";
+ char path[PATH_MAX];
- snprintf(path, sizeof(path), "%s/%s%s",
- prefix, fn, suffix);
- fn = path;
-
- ctx->indexes[i] = index_mm_open(ctx, fn, true);
- if (ctx->indexes[i] == NULL)
- goto fail;
+ if (ctx->indexes[i] != NULL) {
+ INFO(ctx, "Index %s already loaded\n", index_files[i]);
+ continue;
}
+
+ snprintf(path, sizeof(path), "%s/%s.bin", ctx->dirname,
+ index_files[i]);
+ ctx->indexes[i] = index_mm_open(ctx, path, true);
+ if (ctx->indexes[i] == NULL)
+ goto fail;
}
return 0;
return -ENOMEM;
}
+/**
+ * kmod_unload_resources:
+ * @ctx: kmod library context
+ *
+ * Unload all the indexes. This will free the resources to maintain the index
+ * open and all subsequent searches will need to open and close the index.
+ *
+ * User is free to call kmod_load_resources() and kmod_unload_resources() as
+ * many times as wanted during the lifecycle of @ctx. For example, if a daemon
+ * knows that when starting up it will lookup a lot of modules, it could call
+ * kmod_load_resources() and after the first burst of searches is gone, it
+ * could free the resources by calling kmod_unload_resources().
+ *
+ * Returns: 0 on success or < 0 otherwise.
+ */
KMOD_EXPORT void kmod_unload_resources(struct kmod_ctx *ctx)
{
size_t i;
}
}
-KMOD_EXPORT int kmod_resolve_alias_options(struct kmod_ctx *ctx,
- const char *given_alias,
- char **options)
-{
- struct kmod_list *modules = NULL, *l;
- char alias[NAME_MAX];
- char *opts = NULL;
- size_t optslen = 0;
- int err;
-
- if (ctx == NULL || options == NULL)
- return -ENOENT;
-
- modname_normalize(given_alias, alias, NULL);
-
- err = kmod_module_new_from_lookup(ctx, alias, &modules);
- if (err >= 0) {
- kmod_list_foreach(l, modules) {
- const char *str = kmod_module_get_options(l->data);
- size_t len;
- void *tmp;
-
- if (str == NULL)
- continue;
- len = strlen(str);
-
- tmp = realloc(opts, optslen + len + 2);
- if (tmp == NULL)
- goto failed;
- opts = tmp;
- if (optslen > 0) {
- opts[optslen] = ' ';
- optslen++;
- }
- memcpy(opts + optslen, str, len);
- optslen += len;
- opts[optslen] = '\0';
- }
- }
-
- kmod_list_foreach(l, ctx->config->options) {
- const struct kmod_list *ml;
- const char *modname = kmod_option_get_modname(l);
- const char *str;
- bool already_done = false;
- size_t len;
- void *tmp;
-
- if (fnmatch(modname, alias, 0) != 0)
- continue;
-
- kmod_list_foreach(ml, modules) {
- const char *mln = kmod_module_get_name(ml->data);
- if (fnmatch(modname, mln, 0) == 0) {
- already_done = true;
- break;
- }
- }
- if (already_done)
- continue;
-
- str = kmod_option_get_options(l);
- len = strlen(str);
- tmp = realloc(opts, optslen + len + 2);
- if (tmp == NULL)
- goto failed;
- opts = tmp;
- if (optslen > 0) {
- opts[optslen] = ' ';
- optslen++;
- }
- memcpy(opts + optslen, str, len);
- optslen += len;
- opts[optslen] = '\0';
- }
-
- DBG(ctx, "alias=%s options='%s'\n", alias, opts);
- kmod_module_unref_list(modules);
- *options = opts;
- return 0;
-
-failed:
- kmod_module_unref_list(modules);
- free(opts);
- ERR(ctx, "out of memory\n");
- *options = NULL;
- return -ENOMEM;
-}
-
const struct kmod_list *kmod_get_options(const struct kmod_ctx *ctx)
{
return ctx->config->options;
{
return ctx->config->remove_commands;
}
+
+const struct kmod_list *kmod_get_softdeps(const struct kmod_ctx *ctx)
+{
+ return ctx->config->softdeps;
+}
projects / thirdparty / kmod.git / blobdiff