From af4c1fb7a3f428ff704af22294ad955d05ed41dd Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher
Date: Wed, 14 Oct 2020 00:35:16 +0200
Subject: syscallcompat: retry ops on EINTR

Retry operations that have been shown to throw EINTR
errors on CIFS.

Todo: Solution for this pain in the back:

	warning: unix.Getdents returned errno 2 in the middle of data
	rm: cannot remove 'linux-3.0.old3/Documentation/ABI/removed': Input/output error

Progress towards fixing https://github.com/rfjakob/gocryptfs/issues/483 .
---
 internal/fusefrontend/root_node.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'internal/fusefrontend/root_node.go')

diff --git a/internal/fusefrontend/root_node.go b/internal/fusefrontend/root_node.go
index 5870c97..e03e250 100644
--- a/internal/fusefrontend/root_node.go
+++ b/internal/fusefrontend/root_node.go
@@ -203,6 +203,8 @@ func (rn *RootNode) openWriteOnlyFile(dirfd int, cName string, newFlags int) (rw
 //
 // openBackingDir is secure against symlink races by using Openat and
 // ReadDirIVAt.
+//
+// Retries on EINTR.
 func (rn *RootNode) openBackingDir(relPath string) (dirfd int, cName string, err error) {
 	dirRelPath := nametransform.Dir(relPath)
 	// With PlaintextNames, we don't need to read DirIVs. Easy.
@@ -216,7 +218,7 @@ func (rn *RootNode) openBackingDir(relPath string) (dirfd int, cName string, err
 		return dirfd, cName, nil
 	}
 	// Open cipherdir (following symlinks)
-	dirfd, err = syscall.Open(rn.args.Cipherdir, syscall.O_DIRECTORY|syscallcompat.O_PATH, 0)
+	dirfd, err = syscallcompat.Open(rn.args.Cipherdir, syscall.O_DIRECTORY|syscallcompat.O_PATH, 0)
 	if err != nil {
 		return -1, "", err
 	}
-- 
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