Initial revision

1 files changed, 109 insertions, 0 deletions

diff --git a/libnetfs/file-get-translator.c b/libnetfs/file-get-translator.c
new file mode 100644
index 00000000..f854a6b3
--- /dev/null
+++ b/libnetfs/file-get-translator.c
@@ -0,0 +1,109 @@
+/* 
+   Copyright (C) 1996 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 "netfs.h"
+#include "fs_S.h"
+
+error_t
+netfs_S_file_get_translator (struct protid *user,
+			     char **translator,
+			     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->credential);
+  
+  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;
+      int amt;
+
+      if (len  > *translen)
+	vm_allocate (mach_task_self (), (vm_address_t *)trans, len, 1);
+      bcopy (_HURD_SYMLINK, *trans, sizeof _HURD_SYMLINK);
+
+      err = netfs_attempt_readlink (user->credential, np, 
+				    *trans + sizeof _HURD_SYMLINK);
+      if (!err)
+	{
+	  (*trans)[sizeof _HURD_SYMLINK + np->nn_stat.st_size] = '\0';
+	  *translen = len;
+	}
+    }
+  else if (S_ISCHR (np->dn_stat.st_mode) || S_ISBLK (np->dn_stat.st_mode))
+    {
+      char *buf;
+      unsigned int buflen;
+
+      if (S_ISCHR (np->dn_stat.st_mode))
+	assert (diskfs_shortcut_chrdev);
+      else
+	assert (diskfs_shortcut_blkdev);
+
+      buflen = asprintf (&buf, "%s%c%d%c%d", 
+			 (S_ISCHR (np->dn_stat.st_mode) 
+			  ? _HURD_CHRDEV
+			  : _HURD_BLKDEV),
+			 '\0', (np->dn_stat.st_rdev >> 8) & 0377,
+			 '\0', (np->dn_stat.st_rdev) & 0377);
+      buflen++;			/* terminating nul */
+      
+      if (buflen > *translen)
+	vm_allocate (mach_task_self (), (vm_address_t *) trans, buflen, 1);
+      bcopy (buf, *trans, buflen);
+      *translen = buflen;
+      error = 0;
+    }
+  else if (S_ISFIFO (np->dn_stat.st_mode))
+    {
+      unsigned int len;
+      
+      len = sizeof _HURD_FIFO;
+      if (len > *translen)
+	vm_allocate (mach_task_self (), (vm_address_t *) trans, len, 1);
+      bcopy (_HURD_FIFO, *trans, sizeof _HURD_FIFO);
+      *translen = len;
+      error = 0;
+    }
+  else if (S_ISSOCK (np->dn_stat.st_mode))
+    {
+      unsigned int len;
+      
+      len = sizeof _HURD_IFSOCK;
+      if (len > *translen)
+	vm_allocate (mach_task_self (), (vm_address_t *) trans, len, 1);
+      bcopy (_HURD_IFSOCK, *trans, sizeof _HURD_IFSOCK);
+      *translen = len;
+      error = 0;
+    }
+}
+