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ddfd0535 | 1 | /* Checking macros for fcntl functions. |
2b778ceb | 2 | Copyright (C) 2007-2021 Free Software Foundation, Inc. |
ddfd0535 UD |
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/>. */ |
ddfd0535 UD |
18 | |
19 | #ifndef _FCNTL_H | |
20 | # error "Never include <bits/fcntl2.h> directly; use <fcntl.h> instead." | |
21 | #endif | |
22 | ||
65f6f938 | 23 | /* Check that calls to open and openat with O_CREAT or O_TMPFILE set have an |
ddfd0535 UD |
24 | appropriate third/fourth parameter. */ |
25 | #ifndef __USE_FILE_OFFSET64 | |
a784e502 UD |
26 | extern int __open_2 (const char *__path, int __oflag) __nonnull ((1)); |
27 | extern int __REDIRECT (__open_alias, (const char *__path, int __oflag, ...), | |
3a50811c | 28 | open) __nonnull ((1)); |
ddfd0535 | 29 | #else |
a784e502 | 30 | extern int __REDIRECT (__open_2, (const char *__path, int __oflag), |
ddfd0535 | 31 | __open64_2) __nonnull ((1)); |
a784e502 | 32 | extern int __REDIRECT (__open_alias, (const char *__path, int __oflag, ...), |
3a50811c | 33 | open64) __nonnull ((1)); |
ddfd0535 | 34 | #endif |
3a50811c UD |
35 | __errordecl (__open_too_many_args, |
36 | "open can be called either with 2 or 3 arguments, not more"); | |
37 | __errordecl (__open_missing_mode, | |
65f6f938 | 38 | "open with O_CREAT or O_TMPFILE in second argument needs 3 arguments"); |
ddfd0535 | 39 | |
5ac3ea17 | 40 | __fortify_function int |
a784e502 | 41 | open (const char *__path, int __oflag, ...) |
3a50811c UD |
42 | { |
43 | if (__va_arg_pack_len () > 1) | |
44 | __open_too_many_args (); | |
45 | ||
46 | if (__builtin_constant_p (__oflag)) | |
47 | { | |
65f6f938 | 48 | if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1) |
3a50811c UD |
49 | { |
50 | __open_missing_mode (); | |
51 | return __open_2 (__path, __oflag); | |
52 | } | |
53 | return __open_alias (__path, __oflag, __va_arg_pack ()); | |
54 | } | |
55 | ||
56 | if (__va_arg_pack_len () < 1) | |
57 | return __open_2 (__path, __oflag); | |
58 | ||
59 | return __open_alias (__path, __oflag, __va_arg_pack ()); | |
60 | } | |
ddfd0535 UD |
61 | |
62 | ||
63 | #ifdef __USE_LARGEFILE64 | |
a784e502 UD |
64 | extern int __open64_2 (const char *__path, int __oflag) __nonnull ((1)); |
65 | extern int __REDIRECT (__open64_alias, (const char *__path, int __oflag, | |
3a50811c UD |
66 | ...), open64) __nonnull ((1)); |
67 | __errordecl (__open64_too_many_args, | |
68 | "open64 can be called either with 2 or 3 arguments, not more"); | |
69 | __errordecl (__open64_missing_mode, | |
65f6f938 | 70 | "open64 with O_CREAT or O_TMPFILE in second argument needs 3 arguments"); |
3a50811c | 71 | |
5ac3ea17 | 72 | __fortify_function int |
a784e502 | 73 | open64 (const char *__path, int __oflag, ...) |
3a50811c UD |
74 | { |
75 | if (__va_arg_pack_len () > 1) | |
76 | __open64_too_many_args (); | |
ddfd0535 | 77 | |
3a50811c UD |
78 | if (__builtin_constant_p (__oflag)) |
79 | { | |
65f6f938 | 80 | if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1) |
3a50811c UD |
81 | { |
82 | __open64_missing_mode (); | |
83 | return __open64_2 (__path, __oflag); | |
84 | } | |
85 | return __open64_alias (__path, __oflag, __va_arg_pack ()); | |
86 | } | |
87 | ||
88 | if (__va_arg_pack_len () < 1) | |
89 | return __open64_2 (__path, __oflag); | |
90 | ||
91 | return __open64_alias (__path, __oflag, __va_arg_pack ()); | |
92 | } | |
ddfd0535 UD |
93 | #endif |
94 | ||
3a50811c | 95 | |
ddfd0535 UD |
96 | #ifdef __USE_ATFILE |
97 | # ifndef __USE_FILE_OFFSET64 | |
a784e502 | 98 | extern int __openat_2 (int __fd, const char *__path, int __oflag) |
47ad95ab | 99 | __nonnull ((2)); |
a784e502 | 100 | extern int __REDIRECT (__openat_alias, (int __fd, const char *__path, |
3a50811c UD |
101 | int __oflag, ...), openat) |
102 | __nonnull ((2)); | |
ddfd0535 | 103 | # else |
a784e502 | 104 | extern int __REDIRECT (__openat_2, (int __fd, const char *__path, |
ddfd0535 | 105 | int __oflag), __openat64_2) |
47ad95ab | 106 | __nonnull ((2)); |
a784e502 | 107 | extern int __REDIRECT (__openat_alias, (int __fd, const char *__path, |
3a50811c UD |
108 | int __oflag, ...), openat64) |
109 | __nonnull ((2)); | |
ddfd0535 | 110 | # endif |
3a50811c UD |
111 | __errordecl (__openat_too_many_args, |
112 | "openat can be called either with 3 or 4 arguments, not more"); | |
113 | __errordecl (__openat_missing_mode, | |
65f6f938 | 114 | "openat with O_CREAT or O_TMPFILE in third argument needs 4 arguments"); |
3a50811c | 115 | |
5ac3ea17 | 116 | __fortify_function int |
a784e502 | 117 | openat (int __fd, const char *__path, int __oflag, ...) |
3a50811c UD |
118 | { |
119 | if (__va_arg_pack_len () > 1) | |
120 | __openat_too_many_args (); | |
121 | ||
122 | if (__builtin_constant_p (__oflag)) | |
123 | { | |
65f6f938 | 124 | if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1) |
3a50811c UD |
125 | { |
126 | __openat_missing_mode (); | |
127 | return __openat_2 (__fd, __path, __oflag); | |
128 | } | |
129 | return __openat_alias (__fd, __path, __oflag, __va_arg_pack ()); | |
130 | } | |
131 | ||
132 | if (__va_arg_pack_len () < 1) | |
133 | return __openat_2 (__fd, __path, __oflag); | |
ddfd0535 | 134 | |
3a50811c UD |
135 | return __openat_alias (__fd, __path, __oflag, __va_arg_pack ()); |
136 | } | |
ddfd0535 UD |
137 | |
138 | ||
139 | # ifdef __USE_LARGEFILE64 | |
a784e502 | 140 | extern int __openat64_2 (int __fd, const char *__path, int __oflag) |
47ad95ab | 141 | __nonnull ((2)); |
a784e502 | 142 | extern int __REDIRECT (__openat64_alias, (int __fd, const char *__path, |
3a50811c UD |
143 | int __oflag, ...), openat64) |
144 | __nonnull ((2)); | |
145 | __errordecl (__openat64_too_many_args, | |
146 | "openat64 can be called either with 3 or 4 arguments, not more"); | |
147 | __errordecl (__openat64_missing_mode, | |
65f6f938 | 148 | "openat64 with O_CREAT or O_TMPFILE in third argument needs 4 arguments"); |
3a50811c | 149 | |
5ac3ea17 | 150 | __fortify_function int |
a784e502 | 151 | openat64 (int __fd, const char *__path, int __oflag, ...) |
3a50811c UD |
152 | { |
153 | if (__va_arg_pack_len () > 1) | |
154 | __openat64_too_many_args (); | |
155 | ||
156 | if (__builtin_constant_p (__oflag)) | |
157 | { | |
65f6f938 | 158 | if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1) |
3a50811c UD |
159 | { |
160 | __openat64_missing_mode (); | |
161 | return __openat64_2 (__fd, __path, __oflag); | |
162 | } | |
163 | return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ()); | |
164 | } | |
165 | ||
166 | if (__va_arg_pack_len () < 1) | |
167 | return __openat64_2 (__fd, __path, __oflag); | |
ddfd0535 | 168 | |
3a50811c UD |
169 | return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ()); |
170 | } | |
ddfd0535 UD |
171 | # endif |
172 | #endif |