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https://github.com/fail0verflow/switch-coreboot.git
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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
124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
/*
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* lar - LinuxBIOS archiver
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*
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* Copright (C) 2006 coresystems GmbH
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* Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <netinet/in.h>
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#include "lib.h"
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#include "lar.h"
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int create_lar(int argc, char *argv[])
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{
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int i, ret;
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FILE *archive, *source;
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char *archivename;
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char *tempmem;
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char *filebuf;
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char *pathname;
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u32 *walk;
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u32 csum;
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int pathlen, entrylen, filelen;
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struct lar_header *header;
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struct stat statbuf;
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archivename=argv[2];
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if (argc<=3) {
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printf("No files for archive %s\n", archivename);
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exit(1);
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}
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printf("Opening %s\n", archivename);
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archive=fopen(archivename, "w");
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if(!archive) {
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// error
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exit(1);
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}
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for (i=3; i<argc; i++) {
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printf(" Adding %s to archive\n", argv[i]);
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ret=stat(argv[i], &statbuf);
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if(ret) {
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printf(" no such file %s\n", argv[i]);
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exit(1);
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}
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filelen=statbuf.st_size;
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tempmem=malloc(sizeof(struct lar_header)+MAX_PATHLEN+filelen+16);
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if(!tempmem) {
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printf ("no memory\n");
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return (1);
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}
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memset(tempmem, 0, sizeof(struct lar_header)+MAX_PATHLEN+filelen+16);
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header=(struct lar_header *)tempmem;
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pathname=tempmem+sizeof(struct lar_header);
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pathlen=sprintf(pathname, argv[i])+1;
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pathlen = (pathlen+15)&0xfffffff0; // align it to 16 bytes
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/* read file into memory */
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filebuf=pathname+pathlen;
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source=fopen(argv[i], "r");
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if(!source) {
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printf(" no such file %s\n", argv[i]);
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exit(1);
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}
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fread(filebuf, statbuf.st_size, 1, source);
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fclose(source);
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/* create correct header */
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memcpy(header, MAGIC, 8);
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header->len=htonl(statbuf.st_size);
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header->offset=htonl(sizeof(struct lar_header)+pathlen);
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/* calculate checksum */
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csum=0;
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for (walk=(u32 *)tempmem;
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walk<(u32 *)(tempmem+ statbuf.st_size+sizeof(struct lar_header)+pathlen);
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walk++) {
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csum+=ntohl(*walk);
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}
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header->checksum=htonl(csum);
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/* write out entry to archive */
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entrylen=(filelen+pathlen+sizeof(struct lar_header)+15) & 0xfffffff0;
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fwrite(tempmem, entrylen, 1, archive);
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free(tempmem);
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}
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fclose(archive);
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printf("done.\n");
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return 0;
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}
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