diff options
Diffstat (limited to 'block-raw-posix.c')
| -rw-r--r-- | block-raw-posix.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/block-raw-posix.c b/block-raw-posix.c index 4874b8e4a4..bff822ea65 100644 --- a/block-raw-posix.c +++ b/block-raw-posix.c @@ -1378,11 +1378,47 @@ static BlockDriverAIOCB *raw_aio_ioctl(BlockDriverState *bs, } #endif /* !linux && !FreeBSD */ +#if defined(__linux__) || defined(__FreeBSD__) +static int hdev_create(const char *filename, int64_t total_size, + const char *backing_file, int flags) +{ + int fd; + int ret = 0; + struct stat stat_buf; + + if (flags || backing_file) + return -ENOTSUP; + + fd = open(filename, O_WRONLY | O_BINARY); + if (fd < 0) + return -EIO; + + if (fstat(fd, &stat_buf) < 0) + ret = -EIO; + else if (!S_ISBLK(stat_buf.st_mode)) + ret = -EIO; + else if (lseek(fd, 0, SEEK_END) < total_size * 512) + ret = -ENOSPC; + + close(fd); + return ret; +} + +#else /* !(linux || freebsd) */ + +static int hdev_create(const char *filename, int64_t total_size, + const char *backing_file, int flags) +{ + return -ENOTSUP; +} +#endif + BlockDriver bdrv_host_device = { .format_name = "host_device", .instance_size = sizeof(BDRVRawState), .bdrv_open = hdev_open, .bdrv_close = raw_close, + .bdrv_create = hdev_create, .bdrv_flush = raw_flush, #ifdef CONFIG_AIO |