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1/* Lookup helper function for Hurd implementation of *at functions.
2 Copyright (C) 2006-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
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.
9
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.
14
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/>. */
18
19#include <hurd.h>
20#include <hurd/lookup.h>
21#include <hurd/fd.h>
22#include <string.h>
23#include <fcntl.h>
24
25file_t
26__file_name_lookup_at (int fd, int at_flags,
27 const char *file_name, int flags, mode_t mode)
28{
29 error_t err;
30 file_t result;
31 int empty = at_flags & AT_EMPTY_PATH;
32
33 at_flags &= ~AT_EMPTY_PATH;
34
35 err = __hurd_at_flags (&at_flags, &flags);
36 if (err)
37 return (__hurd_fail (err), MACH_PORT_NULL);
38
39 if (fd == AT_FDCWD || file_name[0] == '/')
40 return __file_name_lookup (file_name, flags, mode);
41
42 if (empty != 0 && file_name[0] == '\0')
43 {
44 enum retry_type doretry;
45 char retryname[1024]; /* XXX string_t LOSES! */
46
47 err = HURD_DPORT_USE (fd, __dir_lookup (port, "", flags, mode,
48 &doretry, retryname,
49 &result));
50
51 if (! err)
52 err = __hurd_file_name_lookup_retry (&_hurd_ports_use, &__getdport,
53 NULL, doretry, retryname,
54 flags, mode, &result);
55
56 return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
57 }
58
59 file_t startdir;
60 error_t use_init_port (int which, error_t (*operate) (mach_port_t))
61 {
62 return (which == INIT_PORT_CWDIR ? (*operate) (startdir)
63 : _hurd_ports_use (which, operate));
64 }
65
66 err = HURD_DPORT_USE (fd, (startdir = port,
67 __hurd_file_name_lookup (&use_init_port,
68 &__getdport, NULL,
69 file_name,
70 flags,
71 mode & ~_hurd_umask,
72 &result)));
73
74 return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
75}
76
77file_t
78__file_name_split_at (int fd, const char *file_name, char **name)
79{
80 error_t err;
81 file_t result;
82
83 if (fd == AT_FDCWD || file_name[0] == '/')
84 return __file_name_split (file_name, name);
85
86 err = __hurd_file_name_split (&_hurd_ports_use, &__getdport, 0,
87 file_name, &result, name);
88
89 file_t startdir;
90 error_t use_init_port (int which, error_t (*operate) (mach_port_t))
91 {
92 return (which == INIT_PORT_CWDIR ? (*operate) (startdir)
93 : _hurd_ports_use (which, operate));
94 }
95
96 err = HURD_DPORT_USE (fd, (startdir = port,
97 __hurd_file_name_split (&use_init_port,
98 &__getdport, 0,
99 file_name,
100 &result, name)));
101
102 return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
103}
104
105file_t
106__directory_name_split_at (int fd, const char *directory_name, char **name)
107{
108 error_t err;
109 file_t result;
110
111 if (fd == AT_FDCWD || directory_name[0] == '/')
112 return __directory_name_split (directory_name, name);
113
114 file_t startdir;
115 error_t use_init_port (int which, error_t (*operate) (mach_port_t))
116 {
117 return (which == INIT_PORT_CWDIR ? (*operate) (startdir)
118 : _hurd_ports_use (which, operate));
119 }
120
121 err = HURD_DPORT_USE (fd, (startdir = port,
122 __hurd_directory_name_split (&use_init_port,
123 &__getdport, 0,
124 directory_name,
125 &result, name)));
126
127 return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
128}
129

Warning: That file was not part of the compilation database. It may have many parsing errors.