[Feature][T106]ZXW P56U09 code
Only Configure: Yes
Affected branch: master
Affected module: unknow
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: No
Doc Update: No
Change-Id: I3cbd8b420271eb20c2b40ebe5c78f83059cd42f3
diff --git a/ap/libc/glibc/glibc-2.23/sysdeps/mach/hurd/chroot.c b/ap/libc/glibc/glibc-2.23/sysdeps/mach/hurd/chroot.c
new file mode 100644
index 0000000..93dc979
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/sysdeps/mach/hurd/chroot.c
@@ -0,0 +1,65 @@
+/* Copyright (C) 1991-2016 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 <string.h>
+#include <unistd.h>
+
+#include <hurd.h>
+#include <hurd/port.h>
+
+/* Make PATH be the root directory (the starting point for absolute
+ paths). Note that while on traditional UNIX systems this call is
+ restricted to the super-user, it isn't on the Hurd. */
+int
+chroot (const char *path)
+{
+ const char *lookup;
+ size_t len;
+ file_t dir, root;
+ error_t err;
+
+ /* Append trailing "/." to directory name to force ENOTDIR if it's not a
+ directory and EACCES if we don't have search permission. */
+ len = strlen (path);
+ if (len >= 2 && path[len - 2] == '/' && path[len - 1] == '.')
+ lookup = path;
+ else if (len == 0)
+ /* Special-case empty file name according to POSIX. */
+ return __hurd_fail (ENOENT);
+ else
+ {
+ char *n = alloca (len + 3);
+ memcpy (n, path, len);
+ n[len] = '/';
+ n[len + 1] = '.';
+ n[len + 2] = '\0';
+ lookup = n;
+ }
+
+ dir = __file_name_lookup (lookup, 0, 0);
+ if (dir == MACH_PORT_NULL)
+ return -1;
+
+ /* Prevent going through DIR's .. */
+ err = __file_reparent (dir, MACH_PORT_NULL, &root);
+ __mach_port_deallocate (__mach_task_self (), dir);
+ if (err)
+ return __hurd_fail (err);
+
+ _hurd_port_set (&_hurd_ports[INIT_PORT_CRDIR], root);
+ return 0;
+}