X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/fefb28a4712cf39140481f9525a63aac94b61186..1abcfe9e299b6e48792ddfa6f2ab8cec93f16823:/block/file-win32.c diff --git a/block/file-win32.c b/block/file-win32.c index 8f14f0bdcd..f1e2187f3b 100644 --- a/block/file-win32.c +++ b/block/file-win32.c @@ -21,17 +21,19 @@ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ + #include "qemu/osdep.h" #include "qapi/error.h" #include "qemu/cutils.h" #include "block/block_int.h" #include "qemu/module.h" +#include "qemu/option.h" #include "block/raw-aio.h" #include "trace.h" #include "block/thread-pool.h" #include "qemu/iov.h" +#include "qapi/qmp/qdict.h" #include "qapi/qmp/qstring.h" -#include "qapi/util.h" #include #include @@ -160,7 +162,7 @@ static BlockAIOCB *paio_submit(BlockDriverState *bs, HANDLE hfile, acb->aio_nbytes = count; acb->aio_offset = offset; - trace_paio_submit(acb, opaque, offset, count, type); + trace_file_paio_submit(acb, opaque, offset, count, type); pool = aio_get_thread_pool(bdrv_get_aio_context(bs)); return thread_pool_submit_aio(pool, aio_worker, acb, cb, opaque); } @@ -249,7 +251,11 @@ static void raw_probe_alignment(BlockDriverState *bs, Error **errp) &dg.Geometry.BytesPerSector, &freeClusters, &totalClusters); bs->bl.request_alignment = dg.Geometry.BytesPerSector; + return; } + + /* XXX Does Windows support AIO on less than 512-byte alignment? */ + bs->bl.request_alignment = 512; } static void raw_parse_flags(int flags, bool use_aio, int *access_flags, @@ -276,12 +282,7 @@ static void raw_parse_flags(int flags, bool use_aio, int *access_flags, static void raw_parse_filename(const char *filename, QDict *options, Error **errp) { - /* The filename does not have to be prefixed by the protocol name, since - * "file" is the default protocol; therefore, the return value of this - * function call can be ignored. */ - strstart(filename, "file:", &filename); - - qdict_put_str(options, "filename", filename); + bdrv_parse_filename_strip_prefix(filename, "file:", options); } static QemuOptsList raw_runtime_opts = { @@ -308,8 +309,8 @@ static bool get_aio_option(QemuOpts *opts, int flags, Error **errp) aio_default = (flags & BDRV_O_NATIVE_AIO) ? BLOCKDEV_AIO_OPTIONS_NATIVE : BLOCKDEV_AIO_OPTIONS_THREADS; - aio = qapi_enum_parse(BlockdevAioOptions_lookup, qemu_opt_get(opts, "aio"), - BLOCKDEV_AIO_OPTIONS__MAX, aio_default, errp); + aio = qapi_enum_parse(&BlockdevAioOptions_lookup, qemu_opt_get(opts, "aio"), + aio_default, errp); switch (aio) { case BLOCKDEV_AIO_OPTIONS_NATIVE: @@ -413,32 +414,32 @@ fail: return ret; } -static BlockAIOCB *raw_aio_readv(BlockDriverState *bs, - int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, - BlockCompletionFunc *cb, void *opaque) +static BlockAIOCB *raw_aio_preadv(BlockDriverState *bs, + uint64_t offset, uint64_t bytes, + QEMUIOVector *qiov, int flags, + BlockCompletionFunc *cb, void *opaque) { BDRVRawState *s = bs->opaque; if (s->aio) { - return win32_aio_submit(bs, s->aio, s->hfile, sector_num, qiov, - nb_sectors, cb, opaque, QEMU_AIO_READ); + return win32_aio_submit(bs, s->aio, s->hfile, offset, bytes, qiov, + cb, opaque, QEMU_AIO_READ); } else { - return paio_submit(bs, s->hfile, sector_num << BDRV_SECTOR_BITS, qiov, - nb_sectors << BDRV_SECTOR_BITS, + return paio_submit(bs, s->hfile, offset, qiov, bytes, cb, opaque, QEMU_AIO_READ); } } -static BlockAIOCB *raw_aio_writev(BlockDriverState *bs, - int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, - BlockCompletionFunc *cb, void *opaque) +static BlockAIOCB *raw_aio_pwritev(BlockDriverState *bs, + uint64_t offset, uint64_t bytes, + QEMUIOVector *qiov, int flags, + BlockCompletionFunc *cb, void *opaque) { BDRVRawState *s = bs->opaque; if (s->aio) { - return win32_aio_submit(bs, s->aio, s->hfile, sector_num, qiov, - nb_sectors, cb, opaque, QEMU_AIO_WRITE); + return win32_aio_submit(bs, s->aio, s->hfile, offset, bytes, qiov, + cb, opaque, QEMU_AIO_WRITE); } else { - return paio_submit(bs, s->hfile, sector_num << BDRV_SECTOR_BITS, qiov, - nb_sectors << BDRV_SECTOR_BITS, + return paio_submit(bs, s->hfile, offset, qiov, bytes, cb, opaque, QEMU_AIO_WRITE); } } @@ -466,12 +467,19 @@ static void raw_close(BlockDriverState *bs) } } -static int raw_truncate(BlockDriverState *bs, int64_t offset, Error **errp) +static int coroutine_fn raw_co_truncate(BlockDriverState *bs, int64_t offset, + PreallocMode prealloc, Error **errp) { BDRVRawState *s = bs->opaque; LONG low, high; DWORD dwPtrLow; + if (prealloc != PREALLOC_MODE_OFF) { + error_setg(errp, "Unsupported preallocation mode '%s'", + PreallocMode_str(prealloc)); + return -ENOTSUP; + } + low = offset; high = offset >> 32; @@ -549,29 +557,59 @@ static int64_t raw_get_allocated_file_size(BlockDriverState *bs) return st.st_size; } -static int raw_create(const char *filename, QemuOpts *opts, Error **errp) +static int raw_co_create(BlockdevCreateOptions *options, Error **errp) { + BlockdevCreateOptionsFile *file_opts; int fd; - int64_t total_size = 0; - strstart(filename, "file:", &filename); + assert(options->driver == BLOCKDEV_DRIVER_FILE); + file_opts = &options->u.file; - /* Read out options */ - total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), - BDRV_SECTOR_SIZE); + if (file_opts->has_preallocation) { + error_setg(errp, "Preallocation is not supported on Windows"); + return -EINVAL; + } + if (file_opts->has_nocow) { + error_setg(errp, "nocow is not supported on Windows"); + return -EINVAL; + } - fd = qemu_open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, + fd = qemu_open(file_opts->filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644); if (fd < 0) { error_setg_errno(errp, errno, "Could not create file"); return -EIO; } set_sparse(fd); - ftruncate(fd, total_size); + ftruncate(fd, file_opts->size); qemu_close(fd); + return 0; } +static int coroutine_fn raw_co_create_opts(const char *filename, QemuOpts *opts, + Error **errp) +{ + BlockdevCreateOptions options; + int64_t total_size = 0; + + strstart(filename, "file:", &filename); + + /* Read out options */ + total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), + BDRV_SECTOR_SIZE); + + options = (BlockdevCreateOptions) { + .driver = BLOCKDEV_DRIVER_FILE, + .u.file = { + .filename = (char *) filename, + .size = total_size, + .has_preallocation = false, + .has_nocow = false, + }, + }; + return raw_co_create(&options, errp); +} static QemuOptsList raw_create_opts = { .name = "raw-create-opts", @@ -595,14 +633,14 @@ BlockDriver bdrv_file = { .bdrv_file_open = raw_open, .bdrv_refresh_limits = raw_probe_alignment, .bdrv_close = raw_close, - .bdrv_create = raw_create, + .bdrv_co_create_opts = raw_co_create_opts, .bdrv_has_zero_init = bdrv_has_zero_init_1, - .bdrv_aio_readv = raw_aio_readv, - .bdrv_aio_writev = raw_aio_writev, + .bdrv_aio_preadv = raw_aio_preadv, + .bdrv_aio_pwritev = raw_aio_pwritev, .bdrv_aio_flush = raw_aio_flush, - .bdrv_truncate = raw_truncate, + .bdrv_co_truncate = raw_co_truncate, .bdrv_getlength = raw_getlength, .bdrv_get_allocated_file_size = raw_get_allocated_file_size, @@ -671,10 +709,13 @@ static int hdev_probe_device(const char *filename) static void hdev_parse_filename(const char *filename, QDict *options, Error **errp) { - /* The prefix is optional, just as for "file". */ - strstart(filename, "host_device:", &filename); + bdrv_parse_filename_strip_prefix(filename, "host_device:", options); +} - qdict_put_str(options, "filename", filename); +static void hdev_refresh_limits(BlockDriverState *bs, Error **errp) +{ + /* XXX Does Windows support AIO on less than 512-byte alignment? */ + bs->bl.request_alignment = 512; } static int hdev_open(BlockDriverState *bs, QDict *options, int flags, @@ -762,9 +803,10 @@ static BlockDriver bdrv_host_device = { .bdrv_probe_device = hdev_probe_device, .bdrv_file_open = hdev_open, .bdrv_close = raw_close, + .bdrv_refresh_limits = hdev_refresh_limits, - .bdrv_aio_readv = raw_aio_readv, - .bdrv_aio_writev = raw_aio_writev, + .bdrv_aio_preadv = raw_aio_preadv, + .bdrv_aio_pwritev = raw_aio_pwritev, .bdrv_aio_flush = raw_aio_flush, .bdrv_detach_aio_context = raw_detach_aio_context,