diff options
| -rw-r--r-- | block.c | 5 | ||||
| -rw-r--r-- | block/io.c | 2 | ||||
| -rw-r--r-- | include/block/block.h | 1 | ||||
| -rw-r--r-- | qemu-img.c | 44 |
4 files changed, 28 insertions, 24 deletions
diff --git a/block.c b/block.c index 4158a3a36f..b4bec4b1e6 100644 --- a/block.c +++ b/block.c @@ -702,7 +702,8 @@ static void bdrv_inherited_options(int *child_flags, QDict *child_options, flags |= BDRV_O_UNMAP; /* Clear flags that only apply to the top layer */ - flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | BDRV_O_COPY_ON_READ); + flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | BDRV_O_COPY_ON_READ | + BDRV_O_NO_IO); *child_flags = flags; } @@ -722,7 +723,7 @@ static void bdrv_inherited_fmt_options(int *child_flags, QDict *child_options, child_file.inherit_options(child_flags, child_options, parent_flags, parent_options); - *child_flags &= ~BDRV_O_PROTOCOL; + *child_flags &= ~(BDRV_O_PROTOCOL | BDRV_O_NO_IO); } const BdrvChildRole child_format = { diff --git a/block/io.c b/block/io.c index c2611e53c8..4520cab852 100644 --- a/block/io.c +++ b/block/io.c @@ -844,6 +844,7 @@ static int coroutine_fn bdrv_aligned_preadv(BlockDriverState *bs, assert((offset & (BDRV_SECTOR_SIZE - 1)) == 0); assert((bytes & (BDRV_SECTOR_SIZE - 1)) == 0); assert(!qiov || bytes == qiov->size); + assert((bs->open_flags & BDRV_O_NO_IO) == 0); /* Handle Copy on Read and associated serialisation */ if (flags & BDRV_REQ_COPY_ON_READ) { @@ -1130,6 +1131,7 @@ static int coroutine_fn bdrv_aligned_pwritev(BlockDriverState *bs, assert((offset & (BDRV_SECTOR_SIZE - 1)) == 0); assert((bytes & (BDRV_SECTOR_SIZE - 1)) == 0); assert(!qiov || bytes == qiov->size); + assert((bs->open_flags & BDRV_O_NO_IO) == 0); waited = wait_serialising_requests(req); assert(!waited || !req->serialising); diff --git a/include/block/block.h b/include/block/block.h index a48ad49397..c236e1d813 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -93,6 +93,7 @@ typedef struct HDGeometry { #define BDRV_O_PROTOCOL 0x8000 /* if no block driver is explicitly given: select an appropriate protocol driver, ignoring the format layer */ +#define BDRV_O_NO_IO 0x10000 /* don't initialize for I/O */ #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH) diff --git a/qemu-img.c b/qemu-img.c index bd93d0a774..9e3ac9c1a8 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -225,13 +225,13 @@ static int print_block_option_help(const char *filename, const char *fmt) static int img_open_password(BlockBackend *blk, const char *filename, - bool require_io, bool quiet) + int flags, bool quiet) { BlockDriverState *bs; char password[256]; bs = blk_bs(blk); - if (bdrv_is_encrypted(bs) && require_io) { + if (bdrv_is_encrypted(bs) && !(flags & BDRV_O_NO_IO)) { qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); if (qemu_read_password(password, sizeof(password)) < 0) { error_report("No password given"); @@ -248,7 +248,7 @@ static int img_open_password(BlockBackend *blk, const char *filename, static BlockBackend *img_open_opts(const char *optstr, QemuOpts *opts, int flags, - bool require_io, bool quiet) + bool quiet) { QDict *options; Error *local_err = NULL; @@ -260,7 +260,7 @@ static BlockBackend *img_open_opts(const char *optstr, return NULL; } - if (img_open_password(blk, optstr, require_io, quiet) < 0) { + if (img_open_password(blk, optstr, flags, quiet) < 0) { blk_unref(blk); return NULL; } @@ -269,7 +269,7 @@ static BlockBackend *img_open_opts(const char *optstr, static BlockBackend *img_open_file(const char *filename, const char *fmt, int flags, - bool require_io, bool quiet) + bool quiet) { BlockBackend *blk; Error *local_err = NULL; @@ -286,7 +286,7 @@ static BlockBackend *img_open_file(const char *filename, return NULL; } - if (img_open_password(blk, filename, require_io, quiet) < 0) { + if (img_open_password(blk, filename, flags, quiet) < 0) { blk_unref(blk); return NULL; } @@ -297,7 +297,7 @@ static BlockBackend *img_open_file(const char *filename, static BlockBackend *img_open(bool image_opts, const char *filename, const char *fmt, int flags, - bool require_io, bool quiet) + bool quiet) { BlockBackend *blk; if (image_opts) { @@ -311,9 +311,9 @@ static BlockBackend *img_open(bool image_opts, if (!opts) { return NULL; } - blk = img_open_opts(filename, opts, flags, true, quiet); + blk = img_open_opts(filename, opts, flags, quiet); } else { - blk = img_open_file(filename, fmt, flags, true, quiet); + blk = img_open_file(filename, fmt, flags, quiet); } return blk; } @@ -685,7 +685,7 @@ static int img_check(int argc, char **argv) return 1; } - blk = img_open(image_opts, filename, fmt, flags, true, quiet); + blk = img_open(image_opts, filename, fmt, flags, quiet); if (!blk) { return 1; } @@ -877,7 +877,7 @@ static int img_commit(int argc, char **argv) return 1; } - blk = img_open(image_opts, filename, fmt, flags, true, quiet); + blk = img_open(image_opts, filename, fmt, flags, quiet); if (!blk) { return 1; } @@ -1211,13 +1211,13 @@ static int img_compare(int argc, char **argv) goto out3; } - blk1 = img_open(image_opts, filename1, fmt1, flags, true, quiet); + blk1 = img_open(image_opts, filename1, fmt1, flags, quiet); if (!blk1) { ret = 2; goto out3; } - blk2 = img_open(image_opts, filename2, fmt2, flags, true, quiet); + blk2 = img_open(image_opts, filename2, fmt2, flags, quiet); if (!blk2) { ret = 2; goto out2; @@ -1899,7 +1899,7 @@ static int img_convert(int argc, char **argv) total_sectors = 0; for (bs_i = 0; bs_i < bs_n; bs_i++) { blk[bs_i] = img_open(image_opts, argv[optind + bs_i], - fmt, src_flags, true, quiet); + fmt, src_flags, quiet); if (!blk[bs_i]) { ret = -1; goto out; @@ -2044,7 +2044,7 @@ static int img_convert(int argc, char **argv) * the bdrv_create() call which takes different params. * Not critical right now, so fix can wait... */ - out_blk = img_open_file(out_filename, out_fmt, flags, true, quiet); + out_blk = img_open_file(out_filename, out_fmt, flags, quiet); if (!out_blk) { ret = -1; goto out; @@ -2236,8 +2236,8 @@ static ImageInfoList *collect_image_info_list(bool image_opts, g_hash_table_insert(filenames, (gpointer)filename, NULL); blk = img_open(image_opts, filename, fmt, - BDRV_O_FLAGS | BDRV_O_NO_BACKING, - false, false); + BDRV_O_FLAGS | BDRV_O_NO_BACKING | BDRV_O_NO_IO, + false); if (!blk) { goto err; } @@ -2567,7 +2567,7 @@ static int img_map(int argc, char **argv) return 1; } - blk = img_open(image_opts, filename, fmt, BDRV_O_FLAGS, true, false); + blk = img_open(image_opts, filename, fmt, BDRV_O_FLAGS, false); if (!blk) { return 1; } @@ -2712,7 +2712,7 @@ static int img_snapshot(int argc, char **argv) } /* Open the image */ - blk = img_open(image_opts, filename, NULL, bdrv_oflags, true, quiet); + blk = img_open(image_opts, filename, NULL, bdrv_oflags, quiet); if (!blk) { return 1; } @@ -2883,7 +2883,7 @@ static int img_rebase(int argc, char **argv) * Ignore the old backing file for unsafe rebase in case we want to correct * the reference to a renamed or moved backing file. */ - blk = img_open(image_opts, filename, fmt, flags, true, quiet); + blk = img_open(image_opts, filename, fmt, flags, quiet); if (!blk) { ret = -1; goto out; @@ -3221,7 +3221,7 @@ static int img_resize(int argc, char **argv) qemu_opts_del(param); blk = img_open(image_opts, filename, fmt, - BDRV_O_FLAGS | BDRV_O_RDWR, true, quiet); + BDRV_O_FLAGS | BDRV_O_RDWR, quiet); if (!blk) { ret = -1; goto out; @@ -3380,7 +3380,7 @@ static int img_amend(int argc, char **argv) goto out; } - blk = img_open(image_opts, filename, fmt, flags, true, quiet); + blk = img_open(image_opts, filename, fmt, flags, quiet); if (!blk) { ret = -1; goto out; |