From 27e039b0cf766bd6a04a04c45ca6834d31d64b90 Mon Sep 17 00:00:00 2001
From: Miles Bader <miles@gnu.org>
Date: Wed, 20 Nov 1996 02:54:01 +0000
Subject: (read_disknode):   If SBLOCK->fs_inodefmt < FS_44INODEFMT, set
 ST->st_author to st->st_uid,     and NP->author_tracks_uid to true.
 (diskfs_validate_author_change):   New function.

---
 ufs/inode.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/ufs/inode.c b/ufs/inode.c
index 006d595a..286cfafc 100644
--- a/ufs/inode.c
+++ b/ufs/inode.c
@@ -258,7 +258,8 @@ read_disknode (struct node *np)
     {
       st->st_uid = read_disk_entry (di->di_ouid);
       st->st_gid = read_disk_entry (di->di_ogid);
-      st->st_author = 0;
+      st->st_author = st->st_uid;
+      np->author_tracks_uid = 1;
     }
   else
     {
@@ -300,6 +301,18 @@ error_t diskfs_node_reload (struct node *node)
   return 0;
 }
 
+/* Return 0 if NP's author can be changed to AUTHOR; otherwise return an
+   error code. */
+error_t
+diskfs_validate_author_change (struct node *np, uid_t author)
+{
+  if (compat_mode == COMPAT_GNU)
+    return 0;
+  else
+    /* For non-hurd filesystems, the author & owner are the same.  */
+    return (author == np->dn_stat.st_uid) ? 0 : EINVAL;
+}
+
 static void
 write_node (struct node *np)
 {
-- 
cgit v1.2.3