about summary refs log tree commit diff
path: root/REORG.TODO/sysdeps/mach/hurd/link.c
diff options
context:
space:
mode:
Diffstat (limited to 'REORG.TODO/sysdeps/mach/hurd/link.c')
-rw-r--r--REORG.TODO/sysdeps/mach/hurd/link.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/mach/hurd/link.c b/REORG.TODO/sysdeps/mach/hurd/link.c
new file mode 100644
index 0000000000..b9e00b2e1b
--- /dev/null
+++ b/REORG.TODO/sysdeps/mach/hurd/link.c
@@ -0,0 +1,58 @@
+/* Copyright (C) 1991-2017 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <hurd.h>
+
+/* Make a link to FROM called TO.  */
+int
+__link (const char *from, const char *to)
+{
+  error_t err;
+  file_t oldfile, linknode, todir;
+  char *toname;
+
+  oldfile = __file_name_lookup (from, 0, 0);
+  if (oldfile == MACH_PORT_NULL)
+    return -1;
+
+  /* The file_getlinknode RPC returns the port that should be passed to
+     the receiving filesystem (the one containing TODIR) in dir_link.  */
+
+  err = __file_getlinknode (oldfile, &linknode);
+  __mach_port_deallocate (__mach_task_self (), oldfile);
+  if (err)
+    return __hurd_fail (err);
+
+  todir = __file_name_split (to, &toname);
+  if (todir != MACH_PORT_NULL)
+    {
+      err = __dir_link (todir, linknode, toname, 1);
+      __mach_port_deallocate (__mach_task_self (), todir);
+    }
+  __mach_port_deallocate (__mach_task_self (), linknode);
+  if (todir == MACH_PORT_NULL)
+    return -1;
+
+  if (err)
+    return __hurd_fail (err);
+  return 0;
+}
+
+weak_alias (__link, link)