diff options
| -rw-r--r-- | block/bochs.c | 30 |
1 files changed, 9 insertions, 21 deletions
diff --git a/block/bochs.c b/block/bochs.c index b54f54d..5fe2fa3 100644 --- a/block/bochs.c +++ b/block/bochs.c @@ -80,8 +80,6 @@ struct bochs_header { }; typedef struct BDRVBochsState { - int fd; - uint32_t *catalog_bitmap; int catalog_size; @@ -109,23 +107,16 @@ static int bochs_probe(const uint8_t *buf, int buf_size, const char *filename) return 0; } -static int bochs_open(BlockDriverState *bs, const char *filename, int flags) +static int bochs_open(BlockDriverState *bs, int flags) { BDRVBochsState *s = bs->opaque; - int fd, i; + int i; struct bochs_header bochs; struct bochs_header_v1 header_v1; - fd = open(filename, O_RDONLY | O_BINARY); - if (fd < 0) { - return -1; - } - bs->read_only = 1; // no write support yet - s->fd = fd; - - if (pread(fd, &bochs, sizeof(bochs), 0) != sizeof(bochs)) { + if (bdrv_pread(bs->file, 0, &bochs, sizeof(bochs)) != sizeof(bochs)) { goto fail; } @@ -146,8 +137,8 @@ static int bochs_open(BlockDriverState *bs, const char *filename, int flags) s->catalog_size = le32_to_cpu(bochs.extra.redolog.catalog); s->catalog_bitmap = qemu_malloc(s->catalog_size * 4); - if (pread(s->fd, s->catalog_bitmap, s->catalog_size * 4, - le32_to_cpu(bochs.header)) != s->catalog_size * 4) + if (bdrv_pread(bs->file, le32_to_cpu(bochs.header), 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]); @@ -161,7 +152,6 @@ static int bochs_open(BlockDriverState *bs, const char *filename, int flags) return 0; fail: - close(fd); return -1; } @@ -184,8 +174,8 @@ static int64_t seek_to_sector(BlockDriverState *bs, int64_t sector_num) (s->extent_blocks + s->bitmap_blocks)); /* read in bitmap for current extent */ - if (pread(s->fd, &bitmap_entry, 1, bitmap_offset + (extent_offset / 8)) - != 1) { + if (bdrv_pread(bs->file, bitmap_offset + (extent_offset / 8), + &bitmap_entry, 1) != 1) { return -1; } @@ -199,13 +189,12 @@ static int64_t seek_to_sector(BlockDriverState *bs, int64_t sector_num) 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) { int64_t block_offset = seek_to_sector(bs, sector_num); if (block_offset >= 0) { - ret = pread(s->fd, buf, 512, block_offset); + ret = bdrv_pread(bs->file, block_offset, buf, 512); if (ret != 512) { return -1; } @@ -222,14 +211,13 @@ 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_file_open = bochs_open, + .bdrv_open = bochs_open, .bdrv_read = bochs_read, .bdrv_close = bochs_close, }; |