Commit 3766ef57 authored by Kevin Wolf's avatar Kevin Wolf
Browse files

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: default avatarKevin Wolf <kwolf@redhat.com>
Reviewed-by: default avatarMax Reitz <mreitz@redhat.com>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
parent 927f11e1

block/file-win32.c

+38 −9
Original line number Diff line number Diff line
@@ -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",