diff options
Diffstat (limited to 'lib/loopdev.c')
| -rw-r--r-- | lib/loopdev.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/loopdev.c b/lib/loopdev.c index ff99dd444..54c620048 100644 --- a/lib/loopdev.c +++ b/lib/loopdev.c @@ -955,6 +955,28 @@ int loopcxt_is_readonly(struct loopdev_cxt *lc) /* * @lc: context + * + * Returns: 1 if the dio flags is set. + */ +int loopcxt_is_dio(struct loopdev_cxt *lc) +{ + struct sysfs_cxt *sysfs = loopcxt_get_sysfs(lc); + + if (sysfs) { + int fl; + if (sysfs_read_int(sysfs, "loop/dio", &fl) == 0) + return fl; + } + if (loopcxt_ioctl_enabled(lc)) { + struct loop_info64 *lo = loopcxt_get_info(lc); + if (lo) + return lo->lo_flags & LO_FLAGS_DIRECT_IO; + } + return 0; +} + +/* + * @lc: context * @st: backing file stat or NULL * @backing_file: filename * @offset: offset |