acl: Add support for ACLs on NonStop Kernel.

[gnulib.git] / lib / copy-acl.c

diff --git a/lib/copy-acl.c b/lib/copy-acl.c
index 421907d..e8a4460 100644 (file)
--- a/lib/copy-acl.c
+++ b/lib/copy-acl.c
@@ -516,6 +516,68 @@ qcopy_acl (const char *src_name, int source_desc, const char *dst_name,
 
   return 0;
 
+#elif USE_ACL && HAVE_ACLSORT /* NonStop Kernel */
+
+  int count;
+  struct acl entries[NACLENTRIES];
+  int ret;
+
+  for (;;)
+    {
+      count = acl ((char *) src_name, ACL_CNT, NACLENTRIES, NULL);
+
+      if (count < 0)
+        {
+          if (0)
+            {
+              count = 0;
+              break;
+            }
+          else
+            return -2;
+        }
+
+      if (count == 0)
+        break;
+
+      if (count > NACLENTRIES)
+        /* If NACLENTRIES cannot be trusted, use dynamic memory allocation.  */
+        abort ();
+
+      if (acl ((char *) src_name, ACL_GET, count, entries) == count)
+        break;
+      /* Huh? The number of ACL entries changed since the last call.
+         Repeat.  */
+    }
+
+  if (count == 0)
+    return qset_acl (dst_name, dest_desc, mode);
+
+  ret = acl ((char *) dst_name, ACL_SET, count, entries);
+  if (ret < 0)
+    {
+      int saved_errno = errno;
+
+      if (0)
+        {
+          if (!acl_nontrivial (count, entries))
+            return chmod_or_fchmod (dst_name, dest_desc, mode);
+        }
+
+      chmod_or_fchmod (dst_name, dest_desc, mode);
+      errno = saved_errno;
+      return -1;
+    }
+
+  if (mode & (S_ISUID | S_ISGID | S_ISVTX))
+    {
+      /* We did not call chmod so far, and either the mode and the ACL are
+         separate or special bits are to be set which don't fit into ACLs.  */
+
+      return chmod_or_fchmod (dst_name, dest_desc, mode);
+    }
+  return 0;
+
 #else
 
   return qset_acl (dst_name, dest_desc, mode);