diff options
| -rw-r--r-- | block/file-posix.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/block/file-posix.c b/block/file-posix.c index b3fbb9bd63..b8dc19ce1a 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -1178,6 +1178,17 @@ static int sg_get_max_segments(int fd) goto out; } + if (S_ISCHR(st.st_mode)) { + if (ioctl(fd, SG_GET_SG_TABLESIZE, &ret) == 0) { + return ret; + } + return -ENOTSUP; + } + + if (!S_ISBLK(st.st_mode)) { + return -ENOTSUP; + } + sysfspath = g_strdup_printf("/sys/dev/block/%u:%u/queue/max_segments", major(st.st_rdev), minor(st.st_rdev)); sysfd = open(sysfspath, O_RDONLY); |