From: Igor Golikov <igolikov@ibm.com>
Date: Wed, 25 Dec 2024 12:40:34 +0000 (+0000)
Subject: return EINVAL instead of ENOTTY to fix ceph support
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=eaae97d27ebaca199bcdb8af916f1ef14fbc06bc;p=fscrypt.git

return EINVAL instead of ENOTTY to fix ceph support

Signed-off-by: Igor Golikov <igolikov@ibm.com>
---

diff --git a/metadata/policy.go b/metadata/policy.go
index 148df4c..6b6536b 100644
--- a/metadata/policy.go
+++ b/metadata/policy.go
@@ -128,6 +128,13 @@ func setPolicy(file *os.File, arg unsafe.Pointer) error {
                 log.Printf("FS_IOC_SET_ENCRYPTION_KEY_RESTRICTED");
                 _, _, errno = unix.Syscall(unix.SYS_IOCTL, file.Fd(), uintptr(C.fs_ioc_set_encryption_policy_restricted), uintptr(arg))
         }
+	// there is some code (e.g. CheckSupport) that calls this function with assumption that it will fail
+        // and return EINVAL.
+        // as a temp solution, we will return EINVAL if the restricted policy fails (and returns ENOTTY)
+        if errno == unix.ENOTTY {
+                log.Printf("returning EINVAL instead of ENOTTY")
+                return unix.EINVAL
+        }	
 	if errno != 0 {
 		return errno
 	}