mirror of
https://github.com/fail0verflow/switch-coreboot.git
synced 2025-05-04 01:39:18 -04:00
4a133b426c
LinuxBIOS code. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@45 f3766cd6-281f-0410-b1cd-43a5c92072e9
122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
/*
|
|
* lar - LinuxBIOS archiver
|
|
*
|
|
* Copright (C) 2006 coresystems GmbH
|
|
* Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
|
|
*
|
|
* This file may be dual licensed with the new BSD license. // TODO
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/mman.h>
|
|
#include <netinet/in.h>
|
|
|
|
#include "lar.h"
|
|
|
|
struct mem_file {
|
|
char *start;
|
|
int len;
|
|
};
|
|
|
|
int find_file(struct mem_file *archive, char *filename, struct mem_file *result)
|
|
{
|
|
char * walk, *fullname;
|
|
struct lar_header * header;
|
|
|
|
for (walk = archive->start; walk < archive->start +
|
|
archive->len; walk+=16) {
|
|
|
|
if(strcmp(walk, MAGIC)!=0)
|
|
continue;
|
|
|
|
header=(struct lar_header *)walk;
|
|
fullname=walk+sizeof(struct lar_header);
|
|
|
|
// FIXME: check checksum
|
|
|
|
if(strcmp(fullname, filename)!=0) {
|
|
result->start=walk + ntohl(header->offset);
|
|
result->len=ntohl(header->len);
|
|
return 0;
|
|
}
|
|
|
|
// skip file
|
|
walk += ( ntohl(header->offset) + ntohl(header->len)
|
|
+ 15 ) & 0xfffffff0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int fd, ret;
|
|
struct stat statbuf;
|
|
struct mem_file archive, result;
|
|
|
|
if (argc!=2) {
|
|
printf("Usage: example archive.lar\n");
|
|
exit(0);
|
|
}
|
|
|
|
if (stat(argv[1], &statbuf)!=0) {
|
|
printf("Error opening %s: %s\n",
|
|
argv[1], strerror(errno));
|
|
exit(1);
|
|
}
|
|
printf("Opening %s\n", argv[1]);
|
|
|
|
fd=open(argv[1], O_RDONLY);
|
|
if (fd==-1) {
|
|
printf("Error while opening %s: %s\n",
|
|
argv[1], strerror(errno));
|
|
exit(1);
|
|
}
|
|
archive.len=statbuf.st_size;
|
|
|
|
archive.start=mmap(NULL, statbuf.st_size, PROT_READ,
|
|
MAP_SHARED, fd, 0);
|
|
/* OS stuff ends here */
|
|
/* ------------------------------------------------- */
|
|
|
|
// find first compressor
|
|
ret=find_file(&archive, "compression/", &result);
|
|
if(!ret) printf("file found.\n");
|
|
else printf("file not found.\n");
|
|
|
|
ret=find_file(&archive, "normal/initram", &result);
|
|
if(!ret) printf("file found.\n");
|
|
else printf("file not found.\n");
|
|
|
|
|
|
/* ------------------------------------------------- */
|
|
/* OS stuff starts again here */
|
|
munmap(archive.start, archive.len);
|
|
close(fd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|