For string options the kernel will raise the corresponding flag only if
the string isn't empty. So check for the flag.
Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
---
samples/vfs/test-list-all-mounts.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/samples/vfs/test-list-all-mounts.c b/samples/vfs/test-list-all-mounts.c
index 1a02ea4593e3..ce272ded8a79 100644
--- a/samples/vfs/test-list-all-mounts.c
+++ b/samples/vfs/test-list-all-mounts.c
@@ -138,10 +138,11 @@ int main(int argc, char *argv[])
printf("mnt_id:\t\t%" PRIu64 "\nmnt_parent_id:\t%" PRIu64 "\nfs_type:\t%s\nmnt_root:\t%s\nmnt_point:\t%s\nmnt_opts:\t%s\n\n",
(uint64_t)stmnt->mnt_id,
(uint64_t)stmnt->mnt_parent_id,
- stmnt->str + stmnt->fs_type,
- stmnt->str + stmnt->mnt_root,
- stmnt->str + stmnt->mnt_point,
- stmnt->str + stmnt->mnt_opts);
+ (stmnt->mask & STATMOUNT_FS_TYPE) ? stmnt->str + stmnt->fs_type : "",
+ (stmnt->mask & STATMOUNT_MNT_ROOT) ? stmnt->str + stmnt->mnt_root : "",
+ (stmnt->mask & STATMOUNT_MNT_POINT) ? stmnt->str + stmnt->mnt_point : "",
+ (stmnt->mask & STATMOUNT_MNT_OPTS) ? stmnt->str + stmnt->mnt_opts : "");
+
free(stmnt);
}
}
--
2.47.2
