1 files changed, 57 insertions, 0 deletions
diff --git a/hurd/get-host.c b/hurd/get-host.c
new file mode 100644
index 0000000..231ee59
--- /dev/null
+++ b/hurd/get-host.c
@@ -0,0 +1,57 @@
+/* Get a host configuration item kept as the whole contents of a file.
+Copyright (C) 1996 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <hurd.h>
+#include "hurdhost.h"
+
+ssize_t
+_hurd_get_host_config (const char *item, char *buf, size_t buflen)
+{
+  error_t err;
+  char *data;
+  mach_msg_type_number_t nread, more;
+  file_t config = __file_name_lookup (item, O_RDONLY, 0);
+  if (config == MACH_PORT_NULL)
+    return -1;
+
+  data = buf;
+  err = __io_read (config, &data, &nread, -1, buflen);
+  if (! err)
+    /* Check if there is more in the file we didn't read.  */
+    err = __io_readable (config, &more);
+  __mach_port_deallocate (__mach_task_self (), config);
+  if (err)
+    return __hurd_fail (err);
+  if (data != buf)
+    {
+      memcpy (buf, data, nread);
+      __vm_deallocate (__mach_task_self (), (vm_address_t) data, nread);
+    }
+
+  /* Remove newlines in case someone wrote the file by hand.  */
+  while (buf[nread - 1] == '\n')
+    buf[--nread] = '\0';
+
+  if (more)
+    /* If we didn't read the whole file, tell the caller to use a bigger
+       buffer next time.  */
+    return __hurd_fail (ENAMETOOLONG);
+
+  return nread;
+}