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/*
 * Guillaume Cottenceau (gc@mandrakesoft.com)
 *
 * Copyright 2000 Mandrakesoft
 *
 * This software may be freely redistributed under the terms of the GNU
 * public license.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

/*
 * (1) calculate dependencies
 * (2) unarchive relevant modules
 * (3) insmod them
 */

#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include "stage1.h"
#include "log.h"
#include "utils.h"
#include "frontend.h"
#include "mount.h"
#include "modules_descr.h"
#include "zlibsupport.h"

#include "modules.h"

static struct module_deps_elem * modules_deps = NULL;

extern long init_module(void *, unsigned long, const char *);


static const char *moderror(int err)
{
	switch (err) {
	case ENOEXEC:
		return "Invalid module format";
	case ENOENT:
		return "Unknown symbol in module";
	case ESRCH:
		return "Module has wrong symbol version";
	case EINVAL:
		return "Invalid parameters";
	default:
		return strerror(err);
	}
}

int insmod_local_file(char * path, char * options)
{
	void *file;
	unsigned long len;
	int rc;
                
	if (IS_TESTING)
		return 0;

	file = grab_file(path, &len);
                
	if (!file) {
		log_perror(asprintf_("\terror reading %s", path));
		return -1;
	}
                
	rc = init_module(file, len, options ? options : "");
	if (rc)
		log_message("\terror: %s", moderror(errno));
	return rc;
}

static char *kernel_module_extension(void)
{
	return ".ko.gz";
}

static int load_modules_dependencies(void)
{
	char * deps_file = "/modules/modules.dep";
	char * buf, * ptr, * start, * end;
	struct stat s;
	int fd, line, i;

	log_message("loading modules dependencies");

	fd = open(deps_file, O_RDONLY);
	if (fd == -1) {
		log_perror(deps_file);
		return -1;
	}
	
	fstat(fd, &s);
	buf = alloca(s.st_size + 1);
	if (read(fd, buf, s.st_size) != (ssize_t)s.st_size) {
Mode	Name	Size
-rw-r--r--	.cvsignore	9	log stats plain
-rw-r--r--	BUGS	420	log stats plain
-rw-r--r--	COPYING	18007	log stats plain
-rw-r--r--	HACKING	3821	log stats plain
-rw-r--r--	README	15404	log stats plain
-rw-r--r--	README.devel	9849	log stats plain
-rw-r--r--	SHORTCUTS	1464	log stats plain
-rw-r--r--	TODO	17444	log stats plain
-rw-r--r--	advocacy	3122	log stats plain
-rw-r--r--	comparisons	1421	log stats plain
-rw-r--r--	diskdrake.TODO	1127	log stats plain
-rw-r--r--	draknet_advanced_doc.txt	7633	log stats plain
-rw-r--r--	mdk-vs-redhat	1381	log stats plain
-rw-r--r--	object_class.fig	1026	log stats plain
-rw-r--r--	wizard.doc	1082	log stats plain