1999-09-09 Thomas Bushnell, BSG <tb@mit.edu>

	* io-pathconf.c: Include <unistd.h>.
	(diskfs_S_io_pathconf): Provide real definition.

1 files changed, 42 insertions, 3 deletions

diff --git a/libdiskfs/io-pathconf.c b/libdiskfs/io-pathconf.c
index 0b80b14e..666e039a 100644
--- a/libdiskfs/io-pathconf.c
+++ b/libdiskfs/io-pathconf.c
@@ -1,5 +1,5 @@
 /* libdiskfs implementation of io.defs: io_pathconf
-   Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation
+   Copyright (C) 1992, 1993, 1994, 1995, 1999 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
@@ -15,16 +15,55 @@
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
 
+#include <unistd.h>
 #include "priv.h"
 #include "io_S.h"
 
 /* Implement io_pathconf as described in <hurd/io.defs>. */
 kern_return_t
 diskfs_S_io_pathconf (struct protid *cred,
-		      int name __attribute__ ((unused)), int *value)
+		      int name, 
+		      int *value)
 {
   if (!cred)
     return EOPNOTSUPP;
-  *value = 0; /* XXX */
+
+  switch (name)
+    {
+    case _PC_LINK_MAX:
+      *value = diskfs_link_max;
+      break;
+
+    case _PC_MAX_CANON:
+    case _PC_MAX_INPUT:
+    case _PC_PIPE_BUF:
+    case _PC_VDISABLE:
+    case _PC_SOCK_MAXBUF:
+      *value = -1;
+      break;
+      
+    case _PC_NAME_MAX:
+      *value = 1024;		/* see <hurd/hurd_types.defs> string_t */
+      break;
+
+    case _PC_CHOWN_RESTRICTED:
+    case _PC_NO_TRUNC:		/* look at string_t trunc behavior in MiG */
+    case _PC_SYNC_IO:
+    case _PC_ASYNC_IO:
+      *value = 1;
+      break;
+      
+    case _PC_PRIO_IO:
+      *value = 0;
+      break;
+
+    case _PC_FILESIZEBITS:
+      *value = 32;
+      break;
+
+    default:
+      return EINVAL;
+    }
+  
   return 0;
 }