2002-10-16 Roland McGrath <roland@redhat.com>

	* sysdeps/unix/sysv/linux/fpathconf.c (LINUX_LINK_MAX): Move macro ...
	* sysdeps/unix/sysv/linux/linux_fsinfo.h (LINUX_LINK_MAX): ... here.
	* sysdeps/unix/sysv/linux/pathconf.h: New file.
	(statfs_link_max): New function, guts from fpathconf.c.
	* sysdeps/unix/sysv/linux/fpathconf.c: Rewritten using that.
	* sysdeps/unix/sysv/linux/pathconf.c (__pathconf): Likewise.
	* sysdeps/unix/sysv/linux/alpha/pathconf.c (__pathconf): Rewritten
	to use the linux/pathconf.c code by #include rather than duplication.
	* sysdeps/unix/sysv/linux/alpha/fpathconf.c (__pathconf): Likewise.

1 files changed, 76 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/pathconf.h b/sysdeps/unix/sysv/linux/pathconf.h
new file mode 100644
index 0000000000..396563965e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/pathconf.h
@@ -0,0 +1,76 @@
+/* Common parts of Linux implementation of pathconf and fpathconf.
+   Copyright (C) 1991,95,96,98,99,2000,2001,2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <unistd.h>
+#include <errno.h>
+#include <sys/statfs.h>
+#include "linux_fsinfo.h"
+
+/* Used like: return statfs_link_max (__statfs (name, &buf), &buf); */
+
+static long int
+statfs_link_max (int result, const struct statfs *fsbuf)
+{
+  if (result < 0)
+    {
+      if (errno == ENOSYS)
+	/* Not possible, return the default value.  */
+	return LINUX_LINK_MAX;
+
+      /* Some error occured.  */
+      return -1;
+    }
+
+  switch (fsbuf->f_type)
+    {
+    case EXT2_SUPER_MAGIC:
+      return EXT2_LINK_MAX;
+
+    case MINIX_SUPER_MAGIC:
+    case MINIX_SUPER_MAGIC2:
+      return MINIX_LINK_MAX;
+
+    case MINIX2_SUPER_MAGIC:
+    case MINIX2_SUPER_MAGIC2:
+      return MINIX2_LINK_MAX;
+
+    case XENIX_SUPER_MAGIC:
+      return XENIX_LINK_MAX;
+
+    case SYSV4_SUPER_MAGIC:
+    case SYSV2_SUPER_MAGIC:
+      return SYSV_LINK_MAX;
+
+    case COH_SUPER_MAGIC:
+      return COH_LINK_MAX;
+
+    case UFS_MAGIC:
+    case UFS_CIGAM:
+      return UFS_LINK_MAX;
+
+    case REISERFS_SUPER_MAGIC:
+      return REISERFS_LINK_MAX;
+
+    case XFS_SUPER_MAGIC:
+      return XFS_LINK_MAX;
+
+    default:
+      return LINUX_LINK_MAX;
+    }
+}