1 /* Lookup helper function for Hurd implementation of *at functions.
2 Copyright (C) 2006,2010 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
20 #include <hurd/lookup.h>
26 __file_name_lookup_at (int fd, int at_flags,
27 const char *file_name, int flags, mode_t mode)
32 if ((at_flags & AT_SYMLINK_FOLLOW) && (at_flags & AT_SYMLINK_NOFOLLOW))
33 return (__hurd_fail (EINVAL), MACH_PORT_NULL);
35 flags |= (at_flags & AT_SYMLINK_NOFOLLOW) ? O_NOLINK : 0;
36 at_flags &= ~AT_SYMLINK_NOFOLLOW;
37 if (at_flags & AT_SYMLINK_FOLLOW)
39 at_flags &= ~AT_SYMLINK_FOLLOW;
41 return (__hurd_fail (EINVAL), MACH_PORT_NULL);
43 if (fd == AT_FDCWD || file_name[0] == '/')
44 return __file_name_lookup (file_name, flags, mode);
47 error_t use_init_port (int which, error_t (*operate) (mach_port_t))
49 return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
50 _hurd_ports_use (which, operate));
53 err = HURD_DPORT_USE (fd, (startdir = port,
54 __hurd_file_name_lookup (&use_init_port,
61 return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
65 __file_name_split_at (int fd, const char *file_name, char **name)
70 if (fd == AT_FDCWD || file_name[0] == '/')
71 return __file_name_split (file_name, name);
73 err = __hurd_file_name_split (&_hurd_ports_use, &__getdport, 0,
74 file_name, &result, name);
77 error_t use_init_port (int which, error_t (*operate) (mach_port_t))
79 return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
80 _hurd_ports_use (which, operate));
83 err = HURD_DPORT_USE (fd, (startdir = port,
84 __hurd_file_name_split (&use_init_port,
89 return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
93 __directory_name_split_at (int fd, const char *directory_name, char **name)
98 if (fd == AT_FDCWD || directory_name[0] == '/')
99 return __directory_name_split (directory_name, name);
102 error_t use_init_port (int which, error_t (*operate) (mach_port_t))
104 return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
105 _hurd_ports_use (which, operate));
108 err = HURD_DPORT_USE (fd, (startdir = port,
109 __hurd_directory_name_split (&use_init_port,
114 return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;