From: Jim Meyering <jim@meyering.net>
Date: Thu, 13 Aug 1998 01:52:01 +0000 (+0000)
Subject: (ftypelet): Add comments for Cray DMF support.
X-Git-Tag: cvs-readonly~7702
X-Git-Url: http://erislabs.org.uk/gitweb/?a=commitdiff_plain;h=ad3d56c0eecd789e614de4fffac14e97e836726b;p=gnulib.git

(ftypelet): Add comments for Cray DMF support.
From Johan Danielsson.
---

diff --git a/lib/filemode.c b/lib/filemode.c
index d87af5bea..5b830c036 100644
--- a/lib/filemode.c
+++ b/lib/filemode.c
@@ -158,6 +158,7 @@ mode_string (mode, str)
    'b' for block special files
    'c' for character special files
    'm' for multiplexor files
+   'M' for an off-line (regular) file
    'l' for symbolic links
    's' for sockets
    'p' for fifos
@@ -199,13 +200,18 @@ ftypelet (bits)
     return 'n';
 #endif
 
+  /* The following two tests are for Cray DMF (Data Migration
+     Facility), which is a HSM file system.  A migrated file has a
+     `st_dm_mode' that is different from the normal `st_mode', so any
+     tests for migrated files should use the former.  */
+
 #ifdef S_ISOFD
-  /* Cray migrated dmf file.  */
   if (S_ISOFD (bits))
+    /* off line, with data  */
     return 'M';
 #endif
 #ifdef S_ISOFL
-  /* Cray migrated dmf file.  */
+  /* off line, with no data  */
   if (S_ISOFL (bits))
     return 'M';
 #endif