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Add dependency list to kmod_module

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Dependency list is created from line as defined in modules.dep.
This commit is contained in:
Lucas De Marchi 2011-12-01 17:56:03 -02:00
parent e915f92ad3
commit 7636e72b15
2 changed files with 55 additions and 1 deletions
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53
libkmod/libkmod-module.c
View File

@ -17,6 +17,7 @@
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
@ -44,6 +45,11 @@ struct kmod_module {
int refcount;
const char *path;
const char *name;
struct kmod_list *dep;
struct {
bool dep : 1;
} init;
};
static char *path_to_modname(const char *path, bool alloc)
@ -75,6 +81,51 @@ static const char *get_modname(struct kmod_module *mod)
return mod->name;
}
int kmod_module_parse_dep(struct kmod_module *mod, char *line)
{
struct kmod_ctx *ctx = mod->ctx;
struct kmod_list *list = NULL;
char *p, *saveptr;
int err, n = 0;
assert(!mod->init.dep && mod->dep == NULL);
mod->init.dep = true;
p = strchr(line, ':');
if (p == NULL)
return 0;
p++;
for (p = strtok_r(p, " \t", &saveptr); p != NULL;
p = strtok_r(NULL, " \t", &saveptr)) {
const char *modname = path_to_modname(p, false);
struct kmod_module *mod;
err = kmod_module_new_from_name(ctx, modname, &mod);
if (err < 0) {
ERR(ctx, "ctx=%p modname=%s error=%s\n",
ctx, modname, strerror(-err));
goto fail;
}
DBG(ctx, "add dep: %s\n", modname);
list = kmod_list_append(list, mod);
n++;
}
DBG(ctx, "%d dependencies for %s\n", n, mod->name);
mod->dep = list;
return n;
fail:
kmod_module_unref_list(list);
mod->init.dep = false;
return err;
}
KMOD_EXPORT int kmod_module_new_from_name(struct kmod_ctx *ctx,
const char *name,
struct kmod_module **mod)
@ -137,6 +188,7 @@ KMOD_EXPORT struct kmod_module *kmod_module_unref(struct kmod_module *mod)
DBG(mod->ctx, "kmod_module %p released\n", mod);
kmod_module_unref_list(mod->dep);
kmod_unref(mod->ctx);
free((char *) mod->path);
free((char *) mod->name);
@ -166,7 +218,6 @@ KMOD_EXPORT int kmod_module_new_from_lookup(struct kmod_ctx *ctx,
const char *alias,
struct kmod_list **list)
{
int err;
if (ctx == NULL || alias == NULL)

3
libkmod/libkmod-private.h
View File

@ -72,6 +72,9 @@ void kmod_free_config(struct kmod_ctx *ctx, struct kmod_config *config);
const char *kmod_alias_get_name(const struct kmod_list *l);
const char *kmod_alias_get_modname(const struct kmod_list *l);
/* libkmod-module.c */
int kmod_module_parse_dep(struct kmod_module *mod, char *line);
/* util functions */
char *getline_wrapped(FILE *fp, unsigned int *linenum);
char *underscores(struct kmod_ctx *ctx, char *s);