diff options
Diffstat (limited to 'util/cbfstool/resize.c')
| -rw-r--r-- | util/cbfstool/resize.c | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/util/cbfstool/resize.c b/util/cbfstool/resize.c deleted file mode 100644 index ef3267f392..0000000000 --- a/util/cbfstool/resize.c +++ /dev/null @@ -1,168 +0,0 @@ -/* - * cbfstool - * - * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net> - * - * 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 - */ - -#include <ctype.h> -#include <string.h> -#include <stdlib.h> -#include <unistd.h> -#include <sys/mman.h> - -#include "cbfstool.h" - -void resize_usage(void) -{ - printf("resize [SIZE] [ERASEBLOCK]\tResize the ROM\n"); -} - -int resize_handler(struct rom *rom, int argc, char **argv) -{ - unsigned int align, offset; - int size; - char null = '\0'; - int bootblocksize = ntohl(rom->header->bootblocksize); - - if (argc < 1) { - resize_usage(); - return -1; - } - - if (rom->fd <= 0) { - ERROR("ROM file %s does not exist\n", rom->name); - return -1; - } - - align = ntohl(rom->header->align); - size = get_size(argv[0]); - - if (argc >= 2) - align = strtoul(argv[1], NULL, 0); - - if (size == rom->size && align == ntohl(rom->header->align)) { - ERROR("New parameters are the same as the old\n"); - return 0; - } - - if (size < bootblocksize) { - ERROR("The new size is smaller then the bootblock size\n"); - return -1; - } - - /* if the current ROM is too big for the new size, then complain */ - - if (rom_used_space(rom) > size - bootblocksize) { - ERROR("The new size is too small for the current ROM\n"); - return -1; - } - - /* Grow the rom if we need to */ - - if (size > rom->size) { - munmap(rom->ptr, rom->size); - - lseek(rom->fd, size - 1, SEEK_SET); - write(rom->fd, &null, 1); - - rom->ptr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, - rom->fd, 0); - - if (rom->ptr == MAP_FAILED) { - ERROR("Unable to grow the ROM\n"); - return -1; - } - } - - /* We only have to rewrite the entries if the alignment changed */ - - if (align != ntohl(rom->header->align)) { - struct cbfs_file *c; - - /* The first entry doesn't have to move */ - - c = rom_find(rom, rom->header->offset); - - while (c) { - struct cbfs_file *n = rom_find_next(rom, c); - unsigned int next; - - if (n == NULL) - break; - - /* Calculate a new location for the entry */ - next = ROM_OFFSET(rom, c) + - ALIGN(ntohl(c->offset) + ntohl(c->len), align); - - /* Copy the next entry there */ - memmove(ROM_PTR(rom, next), n, - ntohl(n->offset) + ntohl(n->len)); - - c = (struct cbfs_file *)ROM_PTR(rom, next); - - /* If the previous header wasn't overwritten by - * the change, corrupt the header so we don't - * accidently find it - */ - - if (ROM_OFFSET(rom, n) > - next + ntohl(c->len) + ntohl(c->offset)) - memset(n->magic, 0, sizeof(n->magic)); - } - } - - /* Copy the bootblock */ - - memmove(rom->ptr + size - bootblocksize, - rom->ptr + rom->size - bootblocksize, bootblocksize); - - /* Recacluate the location of the header */ - - offset = ROM_READL(rom, size - 12); - - rom->header = (struct cbfs_header *) - ROM_PTR(rom, size - (0xFFFFFFFF - offset) - 1); - - /* Put the new values in the header */ - rom->header->romsize = htonl(size); - rom->header->align = htonl(align); - - /* Truncate the file if we have to */ - - if (size < rom->size) { - munmap(rom->ptr, rom->size); - - rom->ptr = NULL; - - if (ftruncate(rom->fd, size)) { - ERROR("Unable to truncate the ROM\n"); - return -1; - } - - rom->ptr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, - rom->fd, 0); - - if (rom->ptr == MAP_FAILED) { - ERROR("Unable to truncate the ROM\n"); - return -1; - } - } - - rom->size = size; - rom->fssize = size - bootblocksize; - - return 0; -} |