/*
* badblocks.c --- routines to manipulate the bad block structure
- *
- * Copyright (C) 1994 Theodore Ts'o. This file may be redistributed
- * under the terms of the GNU Public License.
+ *
+ * Copyright (C) 1994, 1995, 1996 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
+ * %End-Header%
*/
+#include "config.h"
#include <stdio.h>
#include <string.h>
+#if HAVE_UNISTD_H
#include <unistd.h>
-#include <stdlib.h>
+#endif
#include <fcntl.h>
#include <time.h>
+#if HAVE_SYS_STAT_H
#include <sys/stat.h>
+#endif
+#if HAVE_SYS_TYPES_H
#include <sys/types.h>
+#endif
-#include <linux/fs.h>
-#include <linux/ext2_fs.h>
-
-#include "ext2fs.h"
+#include "ext2_fs.h"
+#include "ext2fsP.h"
/*
- * This procedure create an empty badblocks list.
+ * Helper function for making a badblocks list
*/
-errcode_t badblocks_list_create(badblocks_list *ret, int size)
+static errcode_t make_u32_list(int size, int num, __u32 *list,
+ ext2_u32_list *ret)
{
- badblocks_list bb;
+ ext2_u32_list bb;
+ errcode_t retval;
- bb = malloc(sizeof(struct struct_badblocks_list));
- if (!bb)
- return ENOMEM;
- memset(bb, 0, sizeof(struct struct_badblocks_list));
+ retval = ext2fs_get_mem(sizeof(struct ext2_struct_u32_list), &bb);
+ if (retval)
+ return retval;
+ memset(bb, 0, sizeof(struct ext2_struct_u32_list));
+ bb->magic = EXT2_ET_MAGIC_BADBLOCKS_LIST;
bb->size = size ? size : 10;
- bb->list = malloc(bb->size * sizeof(blk_t));
- if (!bb->list) {
- free(bb);
- return ENOMEM;
+ bb->num = num;
+ retval = ext2fs_get_array(bb->size, sizeof(blk_t), &bb->list);
+ if (retval) {
+ ext2fs_free_mem(&bb);
+ return retval;
}
+ if (list)
+ memcpy(bb->list, list, bb->size * sizeof(blk_t));
+ else
+ memset(bb->list, 0, bb->size * sizeof(blk_t));
*ret = bb;
return 0;
}
+
/*
- * This procedure frees a badblocks list.
+ * This procedure creates an empty u32 list.
+ */
+errcode_t ext2fs_u32_list_create(ext2_u32_list *ret, int size)
+{
+ return make_u32_list(size, 0, 0, ret);
+}
+
+/*
+ * This procedure creates an empty badblocks list.
+ */
+errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, int size)
+{
+ return make_u32_list(size, 0, 0, (ext2_badblocks_list *) ret);
+}
+
+
+/*
+ * This procedure copies a badblocks list
*/
-void badblocks_list_free(badblocks_list bb)
+errcode_t ext2fs_u32_copy(ext2_u32_list src, ext2_u32_list *dest)
{
- if (bb->list)
- free(bb->list);
- bb->list = 0;
- free(bb);
+ errcode_t retval;
+
+ retval = make_u32_list(src->size, src->num, src->list, dest);
+ if (retval)
+ return retval;
+ (*dest)->badblocks_flags = src->badblocks_flags;
+ return 0;
}
+errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src,
+ ext2_badblocks_list *dest)
+{
+ return ext2fs_u32_copy((ext2_u32_list) src,
+ (ext2_u32_list *) dest);
+}
+
+/*
+ * This procedure frees a badblocks list.
+ *
+ * (note: moved to closefs.c)
+ */
+
+
/*
* This procedure adds a block to a badblocks list.
*/
-errcode_t badblocks_list_add(badblocks_list bb, blk_t blk)
+errcode_t ext2fs_u32_list_add(ext2_u32_list bb, __u32 blk)
{
- int i;
+ errcode_t retval;
+ int i, j;
+ unsigned long old_size;
- for (i=0; i < bb->num; i++)
- if (bb->list[i] == blk)
- return 0;
+ EXT2_CHECK_MAGIC(bb, EXT2_ET_MAGIC_BADBLOCKS_LIST);
if (bb->num >= bb->size) {
- bb->size += 10;
- bb->list = realloc(bb->list, bb->size * sizeof(blk_t));
- if (!bb->list) {
- bb->size = 0;
- bb->num = 0;
- return ENOMEM;
+ old_size = bb->size * sizeof(__u32);
+ bb->size += 100;
+ retval = ext2fs_resize_mem(old_size, bb->size * sizeof(__u32),
+ &bb->list);
+ if (retval) {
+ bb->size -= 100;
+ return retval;
}
}
- bb->list[bb->num++] = blk;
+ /*
+ * Add special case code for appending to the end of the list
+ */
+ i = bb->num-1;
+ if ((bb->num != 0) && (bb->list[i] == blk))
+ return 0;
+ if ((bb->num == 0) || (bb->list[i] < blk)) {
+ bb->list[bb->num++] = blk;
+ return 0;
+ }
+
+ j = bb->num;
+ for (i=0; i < bb->num; i++) {
+ if (bb->list[i] == blk)
+ return 0;
+ if (bb->list[i] > blk) {
+ j = i;
+ break;
+ }
+ }
+ for (i=bb->num; i > j; i--)
+ bb->list[i] = bb->list[i-1];
+ bb->list[j] = blk;
+ bb->num++;
return 0;
}
+errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, blk_t blk)
+{
+ return ext2fs_u32_list_add((ext2_u32_list) bb, (__u32) blk);
+}
+
+/*
+ * This procedure finds a particular block is on a badblocks
+ * list.
+ */
+int ext2fs_u32_list_find(ext2_u32_list bb, __u32 blk)
+{
+ int low, high, mid;
+
+ if (bb->magic != EXT2_ET_MAGIC_BADBLOCKS_LIST)
+ return -1;
+
+ if (bb->num == 0)
+ return -1;
+
+ low = 0;
+ high = bb->num-1;
+ if (blk == bb->list[low])
+ return low;
+ if (blk == bb->list[high])
+ return high;
+
+ while (low < high) {
+ mid = ((unsigned)low + (unsigned)high)/2;
+ if (mid == low || mid == high)
+ break;
+ if (blk == bb->list[mid])
+ return mid;
+ if (blk < bb->list[mid])
+ high = mid;
+ else
+ low = mid;
+ }
+ return -1;
+}
+
/*
* This procedure tests to see if a particular block is on a badblocks
* list.
*/
-int badblocks_list_test(badblocks_list bb, blk_t blk)
+int ext2fs_u32_list_test(ext2_u32_list bb, __u32 blk)
{
- int i;
+ if (ext2fs_u32_list_find(bb, blk) < 0)
+ return 0;
+ else
+ return 1;
+}
- for (i=0; i < bb->num; i++)
- if (bb->list[i] == blk)
- return 1;
+int ext2fs_badblocks_list_test(ext2_badblocks_list bb, blk_t blk)
+{
+ return ext2fs_u32_list_test((ext2_u32_list) bb, (__u32) blk);
+}
+
+
+/*
+ * Remove a block from the badblock list
+ */
+int ext2fs_u32_list_del(ext2_u32_list bb, __u32 blk)
+{
+ int remloc, i;
+
+ if (bb->num == 0)
+ return -1;
+
+ remloc = ext2fs_u32_list_find(bb, blk);
+ if (remloc < 0)
+ return -1;
+ for (i = remloc ; i < bb->num-1; i++)
+ bb->list[i] = bb->list[i+1];
+ bb->num--;
return 0;
}
-errcode_t badblocks_list_iterate_begin(badblocks_list bb,
- badblocks_iterate *ret)
+void ext2fs_badblocks_list_del(ext2_u32_list bb, __u32 blk)
+{
+ ext2fs_u32_list_del(bb, blk);
+}
+
+errcode_t ext2fs_u32_list_iterate_begin(ext2_u32_list bb,
+ ext2_u32_iterate *ret)
{
- badblocks_iterate iter;
+ ext2_u32_iterate iter;
+ errcode_t retval;
- iter = malloc(sizeof(struct struct_badblocks_iterate));
- if (!iter)
- return ENOMEM;
+ EXT2_CHECK_MAGIC(bb, EXT2_ET_MAGIC_BADBLOCKS_LIST);
+ retval = ext2fs_get_mem(sizeof(struct ext2_struct_u32_iterate), &iter);
+ if (retval)
+ return retval;
+
+ iter->magic = EXT2_ET_MAGIC_BADBLOCKS_ITERATE;
iter->bb = bb;
iter->ptr = 0;
*ret = iter;
return 0;
}
-int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk)
+errcode_t ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb,
+ ext2_badblocks_iterate *ret)
+{
+ return ext2fs_u32_list_iterate_begin((ext2_u32_list) bb,
+ (ext2_u32_iterate *) ret);
+}
+
+
+int ext2fs_u32_list_iterate(ext2_u32_iterate iter, __u32 *blk)
{
- badblocks_list bb = iter->bb;
-
+ ext2_u32_list bb;
+
+ if (iter->magic != EXT2_ET_MAGIC_BADBLOCKS_ITERATE)
+ return 0;
+
+ bb = iter->bb;
+
+ if (bb->magic != EXT2_ET_MAGIC_BADBLOCKS_LIST)
+ return 0;
+
if (iter->ptr < bb->num) {
*blk = bb->list[iter->ptr++];
return 1;
- }
+ }
*blk = 0;
return 0;
}
-void badblocks_list_iterate_end(badblocks_iterate iter)
+int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, blk_t *blk)
{
+ return ext2fs_u32_list_iterate((ext2_u32_iterate) iter,
+ (__u32 *) blk);
+}
+
+
+void ext2fs_u32_list_iterate_end(ext2_u32_iterate iter)
+{
+ if (!iter || (iter->magic != EXT2_ET_MAGIC_BADBLOCKS_ITERATE))
+ return;
+
iter->bb = 0;
- free(iter);
+ ext2fs_free_mem(&iter);
}
+void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter)
+{
+ ext2fs_u32_list_iterate_end((ext2_u32_iterate) iter);
+}
+
+
+int ext2fs_u32_list_equal(ext2_u32_list bb1, ext2_u32_list bb2)
+{
+ EXT2_CHECK_MAGIC(bb1, EXT2_ET_MAGIC_BADBLOCKS_LIST);
+ EXT2_CHECK_MAGIC(bb2, EXT2_ET_MAGIC_BADBLOCKS_LIST);
+
+ if (bb1->num != bb2->num)
+ return 0;
+ if (memcmp(bb1->list, bb2->list, bb1->num * sizeof(blk_t)) != 0)
+ return 0;
+ return 1;
+}
+int ext2fs_badblocks_equal(ext2_badblocks_list bb1, ext2_badblocks_list bb2)
+{
+ return ext2fs_u32_list_equal((ext2_u32_list) bb1,
+ (ext2_u32_list) bb2);
+}
-
+int ext2fs_u32_list_count(ext2_u32_list bb)
+{
+ return bb->num;
+}
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff