diff options
Diffstat (limited to 'e2fsprogs/ext2fs/brel_ma.c')
| -rw-r--r-- | e2fsprogs/ext2fs/brel_ma.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/e2fsprogs/ext2fs/brel_ma.c b/e2fsprogs/ext2fs/brel_ma.c deleted file mode 100644 index 652a350..0000000 --- a/e2fsprogs/ext2fs/brel_ma.c +++ /dev/null @@ -1,196 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * brel_ma.c - * - * Copyright (C) 1996, 1997 Theodore Ts'o. - * - * TODO: rewrite to not use a direct array!!! (Fortunately this - * module isn't really used yet.) - * - * %Begin-Header% - * This file may be redistributed under the terms of the GNU Public - * License. - * %End-Header% - */ - -#include <fcntl.h> -#include <stdio.h> -#include <string.h> -#if HAVE_UNISTD_H -#include <unistd.h> -#endif -#if HAVE_ERRNO_H -#include <errno.h> -#endif - -#include "ext2_fs.h" -#include "ext2fs.h" -#include "brel.h" - -static errcode_t bma_put(ext2_brel brel, blk_t old, - struct ext2_block_relocate_entry *ent); -static errcode_t bma_get(ext2_brel brel, blk_t old, - struct ext2_block_relocate_entry *ent); -static errcode_t bma_start_iter(ext2_brel brel); -static errcode_t bma_next(ext2_brel brel, blk_t *old, - struct ext2_block_relocate_entry *ent); -static errcode_t bma_move(ext2_brel brel, blk_t old, blk_t new); -static errcode_t bma_delete(ext2_brel brel, blk_t old); -static errcode_t bma_free(ext2_brel brel); - -struct brel_ma { - __u32 magic; - blk_t max_block; - struct ext2_block_relocate_entry *entries; -}; - -errcode_t ext2fs_brel_memarray_create(char *name, blk_t max_block, - ext2_brel *new_brel) -{ - ext2_brel brel = 0; - errcode_t retval; - struct brel_ma *ma = 0; - size_t size; - - *new_brel = 0; - - /* - * Allocate memory structures - */ - retval = ext2fs_get_mem(sizeof(struct ext2_block_relocation_table), - &brel); - if (retval) - goto errout; - memset(brel, 0, sizeof(struct ext2_block_relocation_table)); - - retval = ext2fs_get_mem(strlen(name)+1, &brel->name); - if (retval) - goto errout; - strcpy(brel->name, name); - - retval = ext2fs_get_mem(sizeof(struct brel_ma), &ma); - if (retval) - goto errout; - memset(ma, 0, sizeof(struct brel_ma)); - brel->priv_data = ma; - - size = (size_t) (sizeof(struct ext2_block_relocate_entry) * - (max_block+1)); - retval = ext2fs_get_mem(size, &ma->entries); - if (retval) - goto errout; - memset(ma->entries, 0, size); - ma->max_block = max_block; - - /* - * Fill in the brel data structure - */ - brel->put = bma_put; - brel->get = bma_get; - brel->start_iter = bma_start_iter; - brel->next = bma_next; - brel->move = bma_move; - brel->delete = bma_delete; - brel->free = bma_free; - - *new_brel = brel; - return 0; - -errout: - bma_free(brel); - return retval; -} - -static errcode_t bma_put(ext2_brel brel, blk_t old, - struct ext2_block_relocate_entry *ent) -{ - struct brel_ma *ma; - - ma = brel->priv_data; - if (old > ma->max_block) - return EXT2_ET_INVALID_ARGUMENT; - ma->entries[(unsigned)old] = *ent; - return 0; -} - -static errcode_t bma_get(ext2_brel brel, blk_t old, - struct ext2_block_relocate_entry *ent) -{ - struct brel_ma *ma; - - ma = brel->priv_data; - if (old > ma->max_block) - return EXT2_ET_INVALID_ARGUMENT; - if (ma->entries[(unsigned)old].new == 0) - return ENOENT; - *ent = ma->entries[old]; - return 0; -} - -static errcode_t bma_start_iter(ext2_brel brel) -{ - brel->current = 0; - return 0; -} - -static errcode_t bma_next(ext2_brel brel, blk_t *old, - struct ext2_block_relocate_entry *ent) -{ - struct brel_ma *ma; - - ma = brel->priv_data; - while (++brel->current < ma->max_block) { - if (ma->entries[(unsigned)brel->current].new == 0) - continue; - *old = brel->current; - *ent = ma->entries[(unsigned)brel->current]; - return 0; - } - *old = 0; - return 0; -} - -static errcode_t bma_move(ext2_brel brel, blk_t old, blk_t new) -{ - struct brel_ma *ma; - - ma = brel->priv_data; - if ((old > ma->max_block) || (new > ma->max_block)) - return EXT2_ET_INVALID_ARGUMENT; - if (ma->entries[(unsigned)old].new == 0) - return ENOENT; - ma->entries[(unsigned)new] = ma->entries[old]; - ma->entries[(unsigned)old].new = 0; - return 0; -} - -static errcode_t bma_delete(ext2_brel brel, blk_t old) -{ - struct brel_ma *ma; - - ma = brel->priv_data; - if (old > ma->max_block) - return EXT2_ET_INVALID_ARGUMENT; - if (ma->entries[(unsigned)old].new == 0) - return ENOENT; - ma->entries[(unsigned)old].new = 0; - return 0; -} - -static errcode_t bma_free(ext2_brel brel) -{ - struct brel_ma *ma; - - if (!brel) - return 0; - - ma = brel->priv_data; - - if (ma) { - ext2fs_free_mem(&ma->entries); - ext2fs_free_mem(&ma); - } - ext2fs_free_mem(&brel->name); - ext2fs_free_mem(&brel); - return 0; -} |