* malloc/malloc.c (_int_realloc): Add parameter with old block
[glibc.git] / hurd / lookup-at.c
bloba2d50cb192ef78a7335b7ef1d36e00ccb9b53a09
1 /* Lookup helper function for Hurd implementation of *at functions.
2 Copyright (C) 2006 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, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #include <hurd.h>
21 #include <hurd/lookup.h>
22 #include <hurd/fd.h>
23 #include <string.h>
24 #include <fcntl.h>
26 file_t
27 __file_name_lookup_at (int fd, int at_flags,
28 const char *file_name, int flags, mode_t mode)
30 error_t err;
31 file_t result;
33 flags |= (at_flags & AT_SYMLINK_NOFOLLOW) ? O_NOLINK : 0;
34 at_flags &= ~AT_SYMLINK_NOFOLLOW;
35 if (at_flags != 0)
36 return __hurd_fail (EINVAL);
38 if (fd == AT_FDCWD || file_name[0] == '/')
39 return __file_name_lookup (file_name, flags, mode);
41 file_t startdir;
42 error_t use_init_port (int which, error_t (*operate) (mach_port_t))
44 return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
45 _hurd_ports_use (which, operate));
48 err = HURD_DPORT_USE (fd, (startdir = port,
49 __hurd_file_name_lookup (&use_init_port,
50 &__getdport, NULL,
51 file_name,
52 flags,
53 mode & ~_hurd_umask,
54 &result)));
56 return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
59 file_t
60 __file_name_split_at (int fd, const char *file_name, char **name)
62 error_t err;
63 file_t result;
65 if (fd == AT_FDCWD || file_name[0] == '/')
66 return __file_name_split (file_name, name);
68 err = __hurd_file_name_split (&_hurd_ports_use, &__getdport, 0,
69 file_name, &result, name);
71 file_t startdir;
72 error_t use_init_port (int which, error_t (*operate) (mach_port_t))
74 return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
75 _hurd_ports_use (which, operate));
78 err = HURD_DPORT_USE (fd, (startdir = port,
79 __hurd_file_name_split (&use_init_port,
80 &__getdport, 0,
81 file_name,
82 &result, name)));
84 return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
87 file_t
88 __directory_name_split_at (int fd, const char *directory_name, char **name)
90 error_t err;
91 file_t result;
93 if (fd == AT_FDCWD || directory_name[0] == '/')
94 return __directory_name_split (directory_name, name);
96 file_t startdir;
97 error_t use_init_port (int which, error_t (*operate) (mach_port_t))
99 return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
100 _hurd_ports_use (which, operate));
103 err = HURD_DPORT_USE (fd, (startdir = port,
104 __hurd_directory_name_split (&use_init_port,
105 &__getdport, 0,
106 directory_name,
107 &result, name)));
109 return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;