1 files changed, 113 insertions, 0 deletions
diff --git a/libnetfs/file-get-translator.c b/libnetfs/file-get-translator.c
new file mode 100644
index 00000000..1489162a
--- /dev/null
+++ b/libnetfs/file-get-translator.c
@@ -0,0 +1,113 @@
+/*
+   Copyright (C) 1996, 1999 Free Software Foundation, Inc.
+   Written by Michael I. Bushnell, p/BSG.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   The GNU Hurd 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
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */
+
+#include <string.h>
+#include <stdio.h>
+#include <hurd/paths.h>
+#include "netfs.h"
+#include "fs_S.h"
+#include <sys/mman.h>
+
+error_t
+netfs_S_file_get_translator (struct protid *user,
+			     char **trans,
+			     mach_msg_type_number_t *translen)
+{
+  struct node *np;
+  error_t err;
+
+  if (!user)
+    return EOPNOTSUPP;
+
+  np = user->po->np;
+  mutex_lock (&np->lock);
+  err = netfs_validate_stat (np, user->user);
+
+  if (err)
+    {
+      mutex_unlock (&np->lock);
+      return err;
+    }
+
+  if (S_ISLNK (np->nn_stat.st_mode))
+    {
+      unsigned int len = sizeof _HURD_SYMLINK + np->nn_stat.st_size + 1;
+
+      if (len  > *translen)
+	*trans = mmap (0, len, PROT_READ|PROT_WRITE, MAP_ANON, 0, 0);
+      bcopy (_HURD_SYMLINK, *trans, sizeof _HURD_SYMLINK);
+
+      err = netfs_attempt_readlink (user->user, np,
+				    *trans + sizeof _HURD_SYMLINK);
+      if (!err)
+	{
+	  (*trans)[sizeof _HURD_SYMLINK + np->nn_stat.st_size] = '\0';
+	  *translen = len;
+	}
+    }
+  else if (S_ISCHR (np->nn_stat.st_mode) || S_ISBLK (np->nn_stat.st_mode))
+    {
+      char *buf;
+      unsigned int buflen;
+
+      buflen = asprintf (&buf, "%s%c%d%c%d",
+			 (S_ISCHR (np->nn_stat.st_mode)
+			  ? _HURD_CHRDEV
+			  : _HURD_BLKDEV),
+			 '\0', (np->nn_stat.st_rdev >> 8) & 0377,
+			 '\0', (np->nn_stat.st_rdev) & 0377);
+      buflen++;			/* terminating nul */
+
+      if (buflen > *translen)
+	*trans = mmap (0, buflen, PROT_READ|PROT_WRITE, MAP_ANON, 0, 0);
+      bcopy (buf, *trans, buflen);
+      free (buf);
+      *translen = buflen;
+      err = 0;
+    }
+  else if (S_ISFIFO (np->nn_stat.st_mode))
+    {
+      unsigned int len;
+
+      len = sizeof _HURD_FIFO;
+      if (len > *translen)
+	*trans = mmap (0, len, PROT_READ|PROT_WRITE, MAP_ANON, 0, 0);
+      bcopy (_HURD_FIFO, *trans, sizeof _HURD_FIFO);
+      *translen = len;
+      err = 0;
+    }
+  else if (S_ISSOCK (np->nn_stat.st_mode))
+    {
+      unsigned int len;
+
+      len = sizeof _HURD_IFSOCK;
+      if (len > *translen)
+        *trans = mmap (0, len, PROT_READ|PROT_WRITE, MAP_ANON, 0, 0);
+      bcopy (_HURD_IFSOCK, *trans, sizeof _HURD_IFSOCK);
+      *translen = len;
+      err = 0;
+    }
+  else
+    err = EINVAL;
+
+  mutex_unlock (&np->lock);
+
+  return err;
+}