[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/hurd/lookup-at.c b/ap/libc/glibc/glibc-2.23/hurd/lookup-at.c
new file mode 100644
index 0000000..3528ba8
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/hurd/lookup-at.c
@@ -0,0 +1,115 @@
+/* Lookup helper function for Hurd implementation of *at functions.
+ Copyright (C) 2006-2016 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 <hurd.h>
+#include <hurd/lookup.h>
+#include <hurd/fd.h>
+#include <string.h>
+#include <fcntl.h>
+
+file_t
+__file_name_lookup_at (int fd, int at_flags,
+ const char *file_name, int flags, mode_t mode)
+{
+ error_t err;
+ file_t result;
+
+ if ((at_flags & AT_SYMLINK_FOLLOW) && (at_flags & AT_SYMLINK_NOFOLLOW))
+ return (__hurd_fail (EINVAL), MACH_PORT_NULL);
+
+ flags |= (at_flags & AT_SYMLINK_NOFOLLOW) ? O_NOLINK : 0;
+ at_flags &= ~AT_SYMLINK_NOFOLLOW;
+ if (at_flags & AT_SYMLINK_FOLLOW)
+ flags &= ~O_NOLINK;
+ at_flags &= ~AT_SYMLINK_FOLLOW;
+ if (at_flags != 0)
+ return (__hurd_fail (EINVAL), MACH_PORT_NULL);
+
+ if (fd == AT_FDCWD || file_name[0] == '/')
+ return __file_name_lookup (file_name, flags, mode);
+
+ file_t startdir;
+ error_t use_init_port (int which, error_t (*operate) (mach_port_t))
+ {
+ return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
+ _hurd_ports_use (which, operate));
+ }
+
+ err = HURD_DPORT_USE (fd, (startdir = port,
+ __hurd_file_name_lookup (&use_init_port,
+ &__getdport, NULL,
+ file_name,
+ flags,
+ mode & ~_hurd_umask,
+ &result)));
+
+ return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
+}
+
+file_t
+__file_name_split_at (int fd, const char *file_name, char **name)
+{
+ error_t err;
+ file_t result;
+
+ if (fd == AT_FDCWD || file_name[0] == '/')
+ return __file_name_split (file_name, name);
+
+ err = __hurd_file_name_split (&_hurd_ports_use, &__getdport, 0,
+ file_name, &result, name);
+
+ file_t startdir;
+ error_t use_init_port (int which, error_t (*operate) (mach_port_t))
+ {
+ return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
+ _hurd_ports_use (which, operate));
+ }
+
+ err = HURD_DPORT_USE (fd, (startdir = port,
+ __hurd_file_name_split (&use_init_port,
+ &__getdport, 0,
+ file_name,
+ &result, name)));
+
+ return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
+}
+
+file_t
+__directory_name_split_at (int fd, const char *directory_name, char **name)
+{
+ error_t err;
+ file_t result;
+
+ if (fd == AT_FDCWD || directory_name[0] == '/')
+ return __directory_name_split (directory_name, name);
+
+ file_t startdir;
+ error_t use_init_port (int which, error_t (*operate) (mach_port_t))
+ {
+ return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
+ _hurd_ports_use (which, operate));
+ }
+
+ err = HURD_DPORT_USE (fd, (startdir = port,
+ __hurd_directory_name_split (&use_init_port,
+ &__getdport, 0,
+ directory_name,
+ &result, name)));
+
+ return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
+}