Move block drivers into their own directory

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 0 insertions, 259 deletions

diff --git a/block-bochs.c b/block-bochs.c
deleted file mode 100644
index bac81c4..0000000
--- a/block-bochs.c
+++ /dev/null
@@ -1,259 +0,0 @@
-/*
- * Block driver for the various disk image formats used by Bochs
- * Currently only for "growing" type in read-only mode
- *
- * Copyright (c) 2005 Alex Beregszaszi
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include "qemu-common.h"
-#include "block_int.h"
-#include "module.h"
-
-/**************************************************************/
-
-#define HEADER_MAGIC "Bochs Virtual HD Image"
-#define HEADER_VERSION 0x00020000
-#define HEADER_V1 0x00010000
-#define HEADER_SIZE 512
-
-#define REDOLOG_TYPE "Redolog"
-#define GROWING_TYPE "Growing"
-
-// not allocated: 0xffffffff
-
-// always little-endian
-struct bochs_header_v1 {
-    char magic[32]; // "Bochs Virtual HD Image"
-    char type[16]; // "Redolog"
-    char subtype[16]; // "Undoable" / "Volatile" / "Growing"
-    uint32_t version;
-    uint32_t header; // size of header
-
-    union {
-	struct {
-	    uint32_t catalog; // num of entries
-	    uint32_t bitmap; // bitmap size
-	    uint32_t extent; // extent size
-	    uint64_t disk; // disk size
-	    char padding[HEADER_SIZE - 64 - 8 - 20];
-	} redolog;
-	char padding[HEADER_SIZE - 64 - 8];
-    } extra;
-};
-
-// always little-endian
-struct bochs_header {
-    char magic[32]; // "Bochs Virtual HD Image"
-    char type[16]; // "Redolog"
-    char subtype[16]; // "Undoable" / "Volatile" / "Growing"
-    uint32_t version;
-    uint32_t header; // size of header
-
-    union {
-	struct {
-	    uint32_t catalog; // num of entries
-	    uint32_t bitmap; // bitmap size
-	    uint32_t extent; // extent size
-	    uint32_t reserved; // for ???
-	    uint64_t disk; // disk size
-	    char padding[HEADER_SIZE - 64 - 8 - 24];
-	} redolog;
-	char padding[HEADER_SIZE - 64 - 8];
-    } extra;
-};
-
-typedef struct BDRVBochsState {
-    int fd;
-
-    uint32_t *catalog_bitmap;
-    int catalog_size;
-
-    int data_offset;
-
-    int bitmap_blocks;
-    int extent_blocks;
-    int extent_size;
-} BDRVBochsState;
-
-static int bochs_probe(const uint8_t *buf, int buf_size, const char *filename)
-{
-    const struct bochs_header *bochs = (const void *)buf;
-
-    if (buf_size < HEADER_SIZE)
-	return 0;
-
-    if (!strcmp(bochs->magic, HEADER_MAGIC) &&
-	!strcmp(bochs->type, REDOLOG_TYPE) &&
-	!strcmp(bochs->subtype, GROWING_TYPE) &&
-	((le32_to_cpu(bochs->version) == HEADER_VERSION) ||
-	(le32_to_cpu(bochs->version) == HEADER_V1)))
-	return 100;
-
-    return 0;
-}
-
-static int bochs_open(BlockDriverState *bs, const char *filename, int flags)
-{
-    BDRVBochsState *s = bs->opaque;
-    int fd, i;
-    struct bochs_header bochs;
-    struct bochs_header_v1 header_v1;
-
-    fd = open(filename, O_RDWR | O_BINARY);
-    if (fd < 0) {
-        fd = open(filename, O_RDONLY | O_BINARY);
-        if (fd < 0)
-            return -1;
-    }
-
-    bs->read_only = 1; // no write support yet
-
-    s->fd = fd;
-
-    if (read(fd, &bochs, sizeof(bochs)) != sizeof(bochs)) {
-        goto fail;
-    }
-
-    if (strcmp(bochs.magic, HEADER_MAGIC) ||
-        strcmp(bochs.type, REDOLOG_TYPE) ||
-        strcmp(bochs.subtype, GROWING_TYPE) ||
-	((le32_to_cpu(bochs.version) != HEADER_VERSION) &&
-	(le32_to_cpu(bochs.version) != HEADER_V1))) {
-        goto fail;
-    }
-
-    if (le32_to_cpu(bochs.version) == HEADER_V1) {
-      memcpy(&header_v1, &bochs, sizeof(bochs));
-      bs->total_sectors = le64_to_cpu(header_v1.extra.redolog.disk) / 512;
-    } else {
-      bs->total_sectors = le64_to_cpu(bochs.extra.redolog.disk) / 512;
-    }
-
-    lseek(s->fd, le32_to_cpu(bochs.header), SEEK_SET);
-
-    s->catalog_size = le32_to_cpu(bochs.extra.redolog.catalog);
-    s->catalog_bitmap = qemu_malloc(s->catalog_size * 4);
-    if (read(s->fd, s->catalog_bitmap, s->catalog_size * 4) !=
-	s->catalog_size * 4)
-	goto fail;
-    for (i = 0; i < s->catalog_size; i++)
-	le32_to_cpus(&s->catalog_bitmap[i]);
-
-    s->data_offset = le32_to_cpu(bochs.header) + (s->catalog_size * 4);
-
-    s->bitmap_blocks = 1 + (le32_to_cpu(bochs.extra.redolog.bitmap) - 1) / 512;
-    s->extent_blocks = 1 + (le32_to_cpu(bochs.extra.redolog.extent) - 1) / 512;
-
-    s->extent_size = le32_to_cpu(bochs.extra.redolog.extent);
-
-    return 0;
- fail:
-    close(fd);
-    return -1;
-}
-
-static inline int seek_to_sector(BlockDriverState *bs, int64_t sector_num)
-{
-    BDRVBochsState *s = bs->opaque;
-    int64_t offset = sector_num * 512;
-    int64_t extent_index, extent_offset, bitmap_offset, block_offset;
-    char bitmap_entry;
-
-    // seek to sector
-    extent_index = offset / s->extent_size;
-    extent_offset = (offset % s->extent_size) / 512;
-
-    if (s->catalog_bitmap[extent_index] == 0xffffffff)
-    {
-//	fprintf(stderr, "page not allocated [%x - %x:%x]\n",
-//	    sector_num, extent_index, extent_offset);
-	return -1; // not allocated
-    }
-
-    bitmap_offset = s->data_offset + (512 * s->catalog_bitmap[extent_index] *
-	(s->extent_blocks + s->bitmap_blocks));
-    block_offset = bitmap_offset + (512 * (s->bitmap_blocks + extent_offset));
-
-//    fprintf(stderr, "sect: %x [ext i: %x o: %x] -> %x bitmap: %x block: %x\n",
-//	sector_num, extent_index, extent_offset,
-//	le32_to_cpu(s->catalog_bitmap[extent_index]),
-//	bitmap_offset, block_offset);
-
-    // read in bitmap for current extent
-    lseek(s->fd, bitmap_offset + (extent_offset / 8), SEEK_SET);
-
-    read(s->fd, &bitmap_entry, 1);
-
-    if (!((bitmap_entry >> (extent_offset % 8)) & 1))
-    {
-//	fprintf(stderr, "sector (%x) in bitmap not allocated\n",
-//	    sector_num);
-	return -1; // not allocated
-    }
-
-    lseek(s->fd, block_offset, SEEK_SET);
-
-    return 0;
-}
-
-static int bochs_read(BlockDriverState *bs, int64_t sector_num,
-                    uint8_t *buf, int nb_sectors)
-{
-    BDRVBochsState *s = bs->opaque;
-    int ret;
-
-    while (nb_sectors > 0) {
-	if (!seek_to_sector(bs, sector_num))
-	{
-	    ret = read(s->fd, buf, 512);
-	    if (ret != 512)
-		return -1;
-	}
-	else
-            memset(buf, 0, 512);
-        nb_sectors--;
-        sector_num++;
-        buf += 512;
-    }
-    return 0;
-}
-
-static void bochs_close(BlockDriverState *bs)
-{
-    BDRVBochsState *s = bs->opaque;
-    qemu_free(s->catalog_bitmap);
-    close(s->fd);
-}
-
-static BlockDriver bdrv_bochs = {
-    .format_name	= "bochs",
-    .instance_size	= sizeof(BDRVBochsState),
-    .bdrv_probe		= bochs_probe,
-    .bdrv_open		= bochs_open,
-    .bdrv_read		= bochs_read,
-    .bdrv_close		= bochs_close,
-};
-
-static void bdrv_bochs_init(void)
-{
-    bdrv_register(&bdrv_bochs);
-}
-
-block_init(bdrv_bochs_init);