diff options
| -rw-r--r-- | block/raw-posix.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/block/raw-posix.c b/block/raw-posix.c index f481e57f78..247e47b88f 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -2069,13 +2069,23 @@ static bool hdev_is_sg(BlockDriverState *bs) #if defined(__linux__) + BDRVRawState *s = bs->opaque; struct stat st; struct sg_scsi_id scsiid; int sg_version; + int ret; + + if (stat(bs->filename, &st) < 0 || !S_ISCHR(st.st_mode)) { + return false; + } - if (stat(bs->filename, &st) >= 0 && S_ISCHR(st.st_mode) && - !bdrv_ioctl(bs, SG_GET_VERSION_NUM, &sg_version) && - !bdrv_ioctl(bs, SG_GET_SCSI_ID, &scsiid)) { + ret = ioctl(s->fd, SG_GET_VERSION_NUM, &sg_version); + if (ret < 0) { + return false; + } + + ret = ioctl(s->fd, SG_GET_SCSI_ID, &scsiid); + if (ret >= 0) { DPRINTF("SG device found: type=%d, version=%d\n", scsiid.scsi_type, sg_version); return true; |