Fake full file access only for faked nodes

Otherwise some scripts may try to modify system files just because they find
they seem to be able to.

* trans/fakeroot.c (netfs_report_access): When FAKE_MODE is not set on
`np', call file_check_access on the underlying node instead of returning
O_RDWR|O_EXEC.

1 files changed, 5 insertions, 1 deletions

diff --git a/trans/fakeroot.c b/trans/fakeroot.c
index 3c84ce70..76fc9010 100644
--- a/trans/fakeroot.c
+++ b/trans/fakeroot.c
@@ -780,7 +780,11 @@ netfs_attempt_write (struct iouser *cred, struct node *np,
 error_t
 netfs_report_access (struct iouser *cred, struct node *np, int *types)
 {
-  *types = O_RDWR|O_EXEC;
+  struct netnode *nn = netfs_node_netnode (np);
+  if (!(nn->faked & FAKE_MODE))
+    return file_check_access (nn->file, types);
+  else
+    *types = O_RDWR|O_EXEC;
   return 0;
 }