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author | luigi <luigi@FreeBSD.org> | 2002-07-14 12:09:33 +0000 |
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committer | luigi <luigi@FreeBSD.org> | 2002-07-14 12:09:33 +0000 |
commit | 760fc742c8f1adc65036a01759bb12596a8e01e1 (patch) | |
tree | 3993481406c4d761f8c363c8875c0d43c506b124 /release | |
parent | c94e4ee10759af5dc2520c84a5bd8736506d58b6 (diff) | |
download | FreeBSD-src-760fc742c8f1adc65036a01759bb12596a8e01e1.zip FreeBSD-src-760fc742c8f1adc65036a01759bb12596a8e01e1.tar.gz |
Not needed anymore.
Diffstat (limited to 'release')
-rw-r--r-- | release/picobsd/build/write_mfs_in_kernel.c | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/release/picobsd/build/write_mfs_in_kernel.c b/release/picobsd/build/write_mfs_in_kernel.c deleted file mode 100644 index 06403c85..0000000 --- a/release/picobsd/build/write_mfs_in_kernel.c +++ /dev/null @@ -1,114 +0,0 @@ -/* - * ---------------------------------------------------------------------------- - * "THE BEER-WARE LICENSE" (Revision 42): - * <phk@FreeBSD.org> wrote this file. As long as you retain this notice you - * can do whatever you want with this stuff. If we meet some day, and you think - * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp - * ---------------------------------------------------------------------------- - * - * $FreeBSD$ - * - * This program patches a filesystem into a kernel made with MD_ROOT - * option. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <fcntl.h> -#include <sys/types.h> -#include <sys/param.h> -#include <sys/stat.h> -#include <sys/disklabel.h> -#include <ufs/ufs/dinode.h> -#include <ufs/ffs/fs.h> - -static int sblock_try[] = SBLOCKSEARCH; -static int force = 0; /* don't check for zeros, may corrupt kernel */ - -int -main(int argc, char **argv) -{ - unsigned char *buf_kernel, *buf_fs, *p,*q, *prog; - int fd_kernel, fd_fs, ch, errs=0; - struct stat st_kernel, st_fs; - struct fs *fs; - u_long l, sboff; - - prog= *argv; - while ((ch = getopt(argc, argv, "f")) != EOF) - switch(ch) { - case 'f': - force = 1 - force; - break; - default: - errs++; - } - argc -= optind; - argv += optind; - - if (errs || argc != 2) { - fprintf(stderr,"Usage:\n\t%s [-f] kernel fs\n", prog); - exit(2); - } - --argv; /* original prog did not use getopt(3) */ - fd_kernel = open(argv[1],O_RDWR); - if (fd_kernel < 0) { perror(argv[1]); exit(2); } - fstat(fd_kernel,&st_kernel); - fd_fs = open(argv[2],O_RDONLY); - if (fd_fs < 0) { perror(argv[2]); exit(2); } - fstat(fd_fs,&st_fs); - buf_kernel = malloc(st_kernel.st_size); - if (!buf_kernel) { perror("malloc"); exit(2); } - buf_fs = malloc(st_fs.st_size); - if (!buf_fs) { perror("malloc"); exit(2); } - if (st_kernel.st_size != read(fd_kernel,buf_kernel,st_kernel.st_size)) - { perror(argv[1]); exit(2); } - if (st_fs.st_size != read(fd_fs,buf_fs,st_fs.st_size)) - { perror(argv[2]); exit(2); } - for(l=0,p=buf_kernel; l < st_kernel.st_size - st_fs.st_size ; l++,p++ ) - if(*p == 'M' && !strcmp(p,"MFS Filesystem goes here")) - goto found; - fprintf(stderr,"MFS filesystem signature not found in %s\n",argv[1]); - exit(1); -found: - for (l = 0; sblock_try[l] != -1; l++) { - sboff = sblock_try[l]; - fs = (struct fs *)(buf_fs + sboff); - if ((fs->fs_magic == FS_UFS1_MAGIC || - (fs->fs_magic == FS_UFS2_MAGIC && - fs->fs_sblockloc == numfrags(fs, sblock_try[l]))) && - fs->fs_bsize <= MAXBSIZE && - fs->fs_bsize >= sizeof(struct fs)) - break; - } - if (sblock_try[l] == -1) { - fprintf(stderr, "Cannot find filesystem\n"); - exit(2); - } - if (!force) - for(l=0,q= p + sboff; l < st_fs.st_size - sboff ; l++,q++ ) - if (*q) - goto fail; - memcpy(p+sboff,buf_fs+sboff,st_fs.st_size-sboff); - lseek(fd_kernel,0L,SEEK_SET); - if (st_kernel.st_size != write(fd_kernel,buf_kernel,st_kernel.st_size)) - { perror(argv[1]); exit(2); } - exit(0); -fail: - l += sboff; - fprintf(stderr,"Obstruction in kernel after %ld bytes (%ld Kbyte)\n", - l, l/1024); - fprintf(stderr,"Filesystem is %ld bytes (%ld Kbyte)\n", - (u_long)st_fs.st_size, (u_long)st_fs.st_size/1024); - exit(1); -} - -/* - * I added a '-f' option to force writing the image into the kernel, even when - * there is already data (i.e. not zero) in the written area. This is useful - * to rewrite a changed MD-image. Beware: If the written image is larger than - * the space reserved in the kernel (with option MD_ROOT) then - * THIS WILL CORRUPT THE KERNEL! - * - */ |