diff options
author | Kevin Wolf <kwolf@redhat.com> | 2018-02-05 16:24:32 +0100 |
---|---|---|
committer | Kevin Wolf <kwolf@redhat.com> | 2018-03-09 15:17:47 +0100 |
commit | 3766ef579ce0bf6c8fff632a7f793833f35d2658 (patch) | |
tree | a77370da021e7d13c05823c45e307ee2da68494f /block/file-win32.c | |
parent | 927f11e1316c1cf96ab70d271f8b29d65dc75f7c (diff) | |
download | qemu-3766ef579ce0bf6c8fff632a7f793833f35d2658.zip qemu-3766ef579ce0bf6c8fff632a7f793833f35d2658.tar.gz qemu-3766ef579ce0bf6c8fff632a7f793833f35d2658.tar.bz2 |
file-win32: Support .bdrv_co_create
This adds the .bdrv_co_create driver callback to file-win32, which
enables image creation over QMP.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'block/file-win32.c')
-rw-r--r-- | block/file-win32.c | 47 |
1 files changed, 38 insertions, 9 deletions
diff --git a/block/file-win32.c b/block/file-win32.c index 4a430d4..2e2f746 100644 --- a/block/file-win32.c +++ b/block/file-win32.c @@ -553,30 +553,59 @@ static int64_t raw_get_allocated_file_size(BlockDriverState *bs) return st.st_size; } -static int coroutine_fn raw_co_create_opts(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", |