1 files changed, 0 insertions, 479 deletions

diff --git a/e2fsprogs/e2fsck/ea_refcount.c b/e2fsprogs/e2fsck/ea_refcount.c
deleted file mode 100644
index 6420c72..0000000
--- a/e2fsprogs/e2fsck/ea_refcount.c
+++ /dev/null
@@ -1,479 +0,0 @@
-/*
- * ea_refcount.c
- * 
- * Copyright (C) 2001 Theodore Ts'o.  This file may be
- * redistributed under the terms of the GNU Public License.
- */
-
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <string.h>
-#include <stdio.h>
-
-#include "e2fsck.h"
-
-/*
- * The strategy we use for keeping track of EA refcounts is as
- * follows.  We keep a sorted array of first EA blocks and its
- * reference counts.  Once the refcount has dropped to zero, it is
- * removed from the array to save memory space.  Once the EA block is
- * checked, its bit is set in the block_ea_map bitmap.  
- */
-struct ea_refcount_el {
-	blk_t	ea_blk;
-	int	ea_count;
-};
-
-struct ea_refcount {
-	blk_t		count;
-	blk_t		size;
-	blk_t		cursor;
-	struct ea_refcount_el	*list;
-};
-
-void ea_refcount_free(ext2_refcount_t refcount)
-{
-	if (!refcount)
-		return;
-
-	if (refcount->list)
-		ext2fs_free_mem(&refcount->list);
-	ext2fs_free_mem(&refcount);
-}
-
-errcode_t ea_refcount_create(int size, ext2_refcount_t *ret)
-{
-	ext2_refcount_t	refcount;
-	errcode_t	retval;
-	size_t		bytes;
-
-	retval = ext2fs_get_mem(sizeof(struct ea_refcount), &refcount);
-	if (retval)
-		return retval;
-	memset(refcount, 0, sizeof(struct ea_refcount));
-
-	if (!size)
-		size = 500;
-	refcount->size = size;
-	bytes = (size_t) (size * sizeof(struct ea_refcount_el));
-#ifdef DEBUG
-	printf("Refcount allocated %d entries, %d bytes.\n",
-	       refcount->size, bytes);
-#endif
-	retval = ext2fs_get_mem(bytes, &refcount->list);
-	if (retval)
-		goto errout;
-	memset(refcount->list, 0, bytes);
-
-	refcount->count = 0;
-	refcount->cursor = 0;
-
-	*ret = refcount;
-	return 0;
-
-errout:
-	ea_refcount_free(refcount);
-	return(retval);
-}
-
-/*
- * collapse_refcount() --- go through the refcount array, and get rid
- * of any count == zero entries
- */
-static void refcount_collapse(ext2_refcount_t refcount)
-{
-	unsigned int	i, j;
-	struct ea_refcount_el	*list;
-
-	list = refcount->list;
-	for (i = 0, j = 0; i < refcount->count; i++) {
-		if (list[i].ea_count) {
-			if (i != j)
-				list[j] = list[i];
-			j++;
-		}
-	}
-#if defined(DEBUG) || defined(TEST_PROGRAM)
-	printf("Refcount_collapse: size was %d, now %d\n",
-	       refcount->count, j);
-#endif
-	refcount->count = j;
-}
-
-
-/*
- * insert_refcount_el() --- Insert a new entry into the sorted list at a
- * 	specified position.
- */
-static struct ea_refcount_el *insert_refcount_el(ext2_refcount_t refcount,
-						 blk_t blk, int pos)
-{
-	struct ea_refcount_el 	*el;
-	errcode_t		retval;
-	blk_t			new_size = 0;
-	int			num;
-
-	if (refcount->count >= refcount->size) {
-		new_size = refcount->size + 100;
-#ifdef DEBUG
-		printf("Reallocating refcount %d entries...\n", new_size);
-#endif	
-		retval = ext2fs_resize_mem((size_t) refcount->size *
-					   sizeof(struct ea_refcount_el),
-					   (size_t) new_size *
-					   sizeof(struct ea_refcount_el),
-					   &refcount->list);
-		if (retval)
-			return 0;
-		refcount->size = new_size;
-	}
-	num = (int) refcount->count - pos;
-	if (num < 0)
-		return 0;	/* should never happen */
-	if (num) {
-		memmove(&refcount->list[pos+1], &refcount->list[pos],
-			sizeof(struct ea_refcount_el) * num);
-	}
-	refcount->count++;
-	el = &refcount->list[pos];
-	el->ea_count = 0;
-	el->ea_blk = blk;
-	return el;
-}
-
-
-/*
- * get_refcount_el() --- given an block number, try to find refcount
- * 	information in the sorted list.  If the create flag is set,
- * 	and we can't find an entry, create one in the sorted list.
- */
-static struct ea_refcount_el *get_refcount_el(ext2_refcount_t refcount,
-					      blk_t blk, int create)
-{
-	float	range;
-	int	low, high, mid;
-	blk_t	lowval, highval;
-
-	if (!refcount || !refcount->list)
-		return 0;
-retry:
-	low = 0;
-	high = (int) refcount->count-1;
-	if (create && ((refcount->count == 0) ||
-		       (blk > refcount->list[high].ea_blk))) {
-		if (refcount->count >= refcount->size)
-			refcount_collapse(refcount);
-
-		return insert_refcount_el(refcount, blk,
-					  (unsigned) refcount->count);
-	}
-	if (refcount->count == 0)
-		return 0;
-	
-	if (refcount->cursor >= refcount->count)
-		refcount->cursor = 0;
-	if (blk == refcount->list[refcount->cursor].ea_blk)
-		return &refcount->list[refcount->cursor++];
-#ifdef DEBUG
-	printf("Non-cursor get_refcount_el: %u\n", blk);
-#endif
-	while (low <= high) {
-#if 0
-		mid = (low+high)/2;
-#else
-		if (low == high)
-			mid = low;
-		else {
-			/* Interpolate for efficiency */
-			lowval = refcount->list[low].ea_blk;
-			highval = refcount->list[high].ea_blk;
-
-			if (blk < lowval)
-				range = 0;
-			else if (blk > highval)
-				range = 1;
-			else 
-				range = ((float) (blk - lowval)) /
-					(highval - lowval);
-			mid = low + ((int) (range * (high-low)));
-		}
-#endif
-		if (blk == refcount->list[mid].ea_blk) {
-			refcount->cursor = mid+1;
-			return &refcount->list[mid];
-		}
-		if (blk < refcount->list[mid].ea_blk)
-			high = mid-1;
-		else
-			low = mid+1;
-	}
-	/*
-	 * If we need to create a new entry, it should be right at
-	 * low (where high will be left at low-1).
-	 */
-	if (create) {
-		if (refcount->count >= refcount->size) {
-			refcount_collapse(refcount);
-			if (refcount->count < refcount->size)
-				goto retry;
-		}
-		return insert_refcount_el(refcount, blk, low);
-	}
-	return 0;
-}
-
-errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk_t blk,
-				int *ret)
-{
-	struct ea_refcount_el	*el;
-	
-	el = get_refcount_el(refcount, blk, 0);
-	if (!el) {
-		*ret = 0;
-		return 0;
-	}
-	*ret = el->ea_count;
-	return 0;
-}
-
-errcode_t ea_refcount_increment(ext2_refcount_t refcount, blk_t blk, int *ret)
-{
-	struct ea_refcount_el	*el;
-
-	el = get_refcount_el(refcount, blk, 1);
-	if (!el)
-		return EXT2_ET_NO_MEMORY;
-	el->ea_count++;
-
-	if (ret)
-		*ret = el->ea_count;
-	return 0;
-}
-
-errcode_t ea_refcount_decrement(ext2_refcount_t refcount, blk_t blk, int *ret)
-{
-	struct ea_refcount_el	*el;
-
-	el = get_refcount_el(refcount, blk, 0);
-	if (!el || el->ea_count == 0)
-		return EXT2_ET_INVALID_ARGUMENT;
-
-	el->ea_count--;
-
-	if (ret)
-		*ret = el->ea_count;
-	return 0;
-}
-
-errcode_t ea_refcount_store(ext2_refcount_t refcount, blk_t blk, int count)
-{
-	struct ea_refcount_el	*el;
-
-	/*
-	 * Get the refcount element
-	 */
-	el = get_refcount_el(refcount, blk, count ? 1 : 0);
-	if (!el)
-		return count ? EXT2_ET_NO_MEMORY : 0;
-	el->ea_count = count;
-	return 0;
-}
-
-blk_t ext2fs_get_refcount_size(ext2_refcount_t refcount)
-{
-	if (!refcount)
-		return 0;
-
-	return refcount->size;
-}
-
-void ea_refcount_intr_begin(ext2_refcount_t refcount)
-{
-	refcount->cursor = 0;
-}
-
-
-blk_t ea_refcount_intr_next(ext2_refcount_t refcount,
-				int *ret)
-{
-	struct ea_refcount_el	*list;
-	
-	while (1) {
-		if (refcount->cursor >= refcount->count)
-			return 0;
-		list = refcount->list;
-		if (list[refcount->cursor].ea_count) {
-			if (ret)
-				*ret = list[refcount->cursor].ea_count;
-			return list[refcount->cursor++].ea_blk;
-		}
-		refcount->cursor++;
-	}
-}
-
-
-#ifdef TEST_PROGRAM
-
-errcode_t ea_refcount_validate(ext2_refcount_t refcount, FILE *out)
-{
-	errcode_t	ret = 0;
-	int		i;
-	const char *bad = "bad refcount";
-	
-	if (refcount->count > refcount->size) {
-		fprintf(out, "%s: count > size\n", bad);
-		return EXT2_ET_INVALID_ARGUMENT;
-	}
-	for (i=1; i < refcount->count; i++) {
-		if (refcount->list[i-1].ea_blk >= refcount->list[i].ea_blk) {
-			fprintf(out, "%s: list[%d].blk=%u, list[%d].blk=%u\n",
-				bad, i-1, refcount->list[i-1].ea_blk,
-				i, refcount->list[i].ea_blk);
-			ret = EXT2_ET_INVALID_ARGUMENT;
-		}
-	}
-	return ret;
-}
-
-#define BCODE_END	0
-#define BCODE_CREATE	1
-#define BCODE_FREE	2
-#define BCODE_STORE	3
-#define BCODE_INCR	4
-#define BCODE_DECR	5
-#define BCODE_FETCH	6
-#define BCODE_VALIDATE	7
-#define BCODE_LIST	8
-#define BCODE_COLLAPSE 9
-
-int bcode_program[] = {
-	BCODE_CREATE, 5,
-	BCODE_STORE, 3, 3,
-	BCODE_STORE, 4, 4,
-	BCODE_STORE, 1, 1,
-	BCODE_STORE, 8, 8,
-	BCODE_STORE, 2, 2,
-	BCODE_STORE, 4, 0,
-	BCODE_STORE, 2, 0,
-	BCODE_STORE, 6, 6,
-	BCODE_VALIDATE,
-	BCODE_STORE, 4, 4,
-	BCODE_STORE, 2, 2,
-	BCODE_FETCH, 1,
-	BCODE_FETCH, 2,
-	BCODE_INCR, 3,
-	BCODE_INCR, 3,
-	BCODE_DECR, 4,
-	BCODE_STORE, 4, 4,
-	BCODE_VALIDATE,
-	BCODE_STORE, 20, 20,
-	BCODE_STORE, 40, 40,
-	BCODE_STORE, 30, 30,
-	BCODE_STORE, 10, 10,
-	BCODE_DECR, 30,
-	BCODE_FETCH, 30,
-	BCODE_DECR, 2,
-	BCODE_DECR, 2,
-	BCODE_COLLAPSE,
-	BCODE_LIST,
-	BCODE_VALIDATE,
-	BCODE_FREE,
-	BCODE_END
-};
-
-int main(int argc, char **argv)
-{
-	int	i = 0;
-	ext2_refcount_t refcount;
-	int		size, arg;
-	blk_t		blk;
-	errcode_t	retval;
-
-	while (1) {
-		switch (bcode_program[i++]) {
-		case BCODE_END:
-			exit(0);
-		case BCODE_CREATE:
-			size = bcode_program[i++];
-			retval = ea_refcount_create(size, &refcount);
-			if (retval) {
-				com_err("ea_refcount_create",
-					retval, "");
-				exit(1);
-			} else
-				printf("Creating refcount with size %d\n",
-				       size);
-			break;
-		case BCODE_FREE:
-			ea_refcount_free(refcount);
-			refcount = 0;
-			printf("Freeing refcount\n");
-			break;
-		case BCODE_STORE:
-			blk = (blk_t) bcode_program[i++];
-			arg = bcode_program[i++];
-			retval = ea_refcount_store(refcount, blk, arg);
-			printf("Storing blk %u with value %d\n", blk, arg);
-			if (retval)
-				com_err("ea_refcount_store", retval, "");
-			break;
-		case BCODE_FETCH:
-			blk = (blk_t) bcode_program[i++];
-			retval = ea_refcount_fetch(refcount, blk, &arg);
-			if (retval)
-				com_err("ea_refcount_fetch", retval, "");
-			else
-				printf("bcode_fetch(%u) returns %d\n",
-				       blk, arg);
-			break;
-		case BCODE_INCR:
-			blk = (blk_t) bcode_program[i++];
-			retval = ea_refcount_increment(refcount, blk,
-							   &arg);
-			if (retval)
-				com_err("ea_refcount_increment", retval,
-					"");
-			else
-				printf("bcode_increment(%u) returns %d\n",
-				       blk, arg);
-			break;
-		case BCODE_DECR:
-			blk = (blk_t) bcode_program[i++];
-			retval = ea_refcount_decrement(refcount, blk,
-							   &arg);
-			if (retval)
-				com_err("ea_refcount_decrement", retval,
-					"while decrementing blk %u", blk);
-			else
-				printf("bcode_decrement(%u) returns %d\n",
-				       blk, arg);
-			break;
-		case BCODE_VALIDATE:
-			retval = ea_refcount_validate(refcount, stderr);
-			if (retval)
-				com_err("ea_refcount_validate",
-					retval, "");
-			else
-				printf("Refcount validation OK.\n");
-			break;
-		case BCODE_LIST:
-			ea_refcount_intr_begin(refcount);
-			while (1) {
-				blk = ea_refcount_intr_next(refcount, 
-								&arg);
-				if (!blk)
-					break;
-				printf("\tblk=%u, count=%d\n", blk,
-				       arg);
-			}
-			break;
-		case BCODE_COLLAPSE:
-			refcount_collapse(refcount);
-			break;
-		}
-		
-	}
-}
-
-#endif