[Filestore] issue-2784: ignore user O_NOFOLLOW flag when opening file…

… through /proc/self/fd (#2786) similar approach taken here https://gitlab.com/virtio-fs/virtiofsd/-/blob/3bf77b7cfa42b23935968c757a4f22ed31bc35d6/src/passthrough/util.rs#L39
ydb-platform · Jan 2, 2025 · 0992384 · 0992384
1 parent c9c878e
commit 0992384
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/cloud/filestore/libs/service_local/lowlevel.cpp b/cloud/filestore/libs/service_local/lowlevel.cpp
@@ -108,6 +108,9 @@ TFileHandle Open(const TFileHandle& handle, int flags, int mode)
     char path[64] = {0};
     sprintf(path, "/proc/self/fd/%i", Fd(handle));
 
+    // Clear `O_NOFOLLOW` if it's set to follow `/proc/self/fd` symlink.
+    flags &= ~O_NOFOLLOW;
+
     int fd = open(path, flags, mode);
     Y_ENSURE_EX(fd != -1, TServiceError(GetSystemErrorCode())
         << "failed to open: " << LastSystemErrorText());