From: Lennart Poettering <lennart@poettering.net>
Date: Sat, 4 Apr 2015 17:20:56 +0000 (+0200)
Subject: path-util: if parent can do name_to_handle() but relevant dir not, it's a mount point
X-Git-Tag: v226.4~1^2~524
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=646ccf657ac4b1aaeedfc06952f4d78d2e4f7d02

path-util: if parent can do name_to_handle() but relevant dir not, it's a mount point
---

diff --git a/src/shared/path-util.c b/src/shared/path-util.c
index 6a984fc1d..e485c8e71 100644
--- a/src/shared/path-util.c
+++ b/src/shared/path-util.c
@@ -515,7 +515,12 @@ int fd_is_mount_point(int fd) {
                                 return 1;
                 } else
                         return -errno;
-        } else
+        } else if (nosupp)
+                /* The parent can do name_to_handle_at() but the
+                 * directory we are interested in can't? If so, it
+                 * must be a mount point. */
+                return 1;
+        else
                 return mount_id != mount_id_parent;
 
 fallback: