fd-util: accept that kcmp might fail with EPERM/EACCES

In a container the kcmp call might well be blocked; Accept that and fall
back to fstat in that case.

diff --git a/src/basic/fd-util.c b/src/basic/fd-util.c
index e085dc2..b97bd19 100644 (file)
--- a/src/basic/fd-util.c
+++ b/src/basic/fd-util.c
@@ -277,7 +277,7 @@ int same_fd(int a, int b) {
                 return true;
         if (r > 0)
                 return false;
-        if (errno != ENOSYS)
+        if (!IN_SET(errno, ENOSYS, EACCES, EPERM))
                 return -errno;
 
         /* We don't have kcmp(), use fstat() instead. */