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16a10468 | 1 | /* Lookup helper function for Hurd implementation of *at functions. |
04277e02 | 2 | Copyright (C) 2006-2019 Free Software Foundation, Inc. |
16a10468 RM |
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 | |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
16a10468 RM |
18 | |
19 | #include <hurd.h> | |
20 | #include <hurd/lookup.h> | |
21 | #include <hurd/fd.h> | |
22 | #include <string.h> | |
23 | #include <fcntl.h> | |
24 | ||
25 | file_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; | |
ee4d7902 ST |
31 | int empty = at_flags & AT_EMPTY_PATH; |
32 | ||
33 | at_flags &= ~AT_EMPTY_PATH; | |
16a10468 | 34 | |
09085ede ST |
35 | err = __hurd_at_flags (&at_flags, &flags); |
36 | if (err) | |
37 | return (__hurd_fail (err), MACH_PORT_NULL); | |
16a10468 RM |
38 | |
39 | if (fd == AT_FDCWD || file_name[0] == '/') | |
40 | return __file_name_lookup (file_name, flags, mode); | |
41 | ||
ee4d7902 ST |
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 | ||
16a10468 RM |
59 | file_t startdir; |
60 | error_t use_init_port (int which, error_t (*operate) (mach_port_t)) | |
61 | { | |
a04549c1 JM |
62 | return (which == INIT_PORT_CWDIR ? (*operate) (startdir) |
63 | : _hurd_ports_use (which, operate)); | |
16a10468 RM |
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 | ||
77 | file_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 | { | |
a04549c1 JM |
92 | return (which == INIT_PORT_CWDIR ? (*operate) (startdir) |
93 | : _hurd_ports_use (which, operate)); | |
16a10468 RM |
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 | ||
105 | file_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 | { | |
a04549c1 JM |
117 | return (which == INIT_PORT_CWDIR ? (*operate) (startdir) |
118 | : _hurd_ports_use (which, operate)); | |
16a10468 RM |
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 | } |