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b799f91d | 1 | /* Checking macros for stdlib functions. |
a784e502 | 2 | Copyright (C) 2005, 2007, 2012 Free Software Foundation, Inc. |
b799f91d 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 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
b799f91d UD |
18 | |
19 | #ifndef _STDLIB_H | |
20 | # error "Never include <bits/stdlib.h> directly; use <stdlib.h> instead." | |
21 | #endif | |
22 | ||
a784e502 | 23 | extern char *__realpath_chk (const char *__restrict __name, |
b799f91d UD |
24 | char *__restrict __resolved, |
25 | size_t __resolvedlen) __THROW __wur; | |
5c08f24c | 26 | extern char *__REDIRECT_NTH (__realpath_alias, |
a784e502 | 27 | (const char *__restrict __name, |
5c08f24c | 28 | char *__restrict __resolved), realpath) __wur; |
d6cd6bf4 | 29 | extern char *__REDIRECT_NTH (__realpath_chk_warn, |
a784e502 | 30 | (const char *__restrict __name, |
d6cd6bf4 UD |
31 | char *__restrict __resolved, |
32 | size_t __resolvedlen), __realpath_chk) __wur | |
33 | __warnattr ("second argument of realpath must be either NULL or at " | |
34 | "least PATH_MAX bytes long buffer"); | |
b799f91d | 35 | |
b037a293 | 36 | __extern_always_inline __wur char * |
a784e502 | 37 | __NTH (realpath (const char *__restrict __name, char *__restrict __resolved)) |
b799f91d UD |
38 | { |
39 | if (__bos (__resolved) != (size_t) -1) | |
d6cd6bf4 UD |
40 | { |
41 | #if defined _LIBC_LIMITS_H_ && defined PATH_MAX | |
42 | if (__bos (__resolved) < PATH_MAX) | |
43 | return __realpath_chk_warn (__name, __resolved, __bos (__resolved)); | |
44 | #endif | |
45 | return __realpath_chk (__name, __resolved, __bos (__resolved)); | |
46 | } | |
b799f91d UD |
47 | |
48 | return __realpath_alias (__name, __resolved); | |
49 | } | |
50 | ||
51 | ||
52 | extern int __ptsname_r_chk (int __fd, char *__buf, size_t __buflen, | |
53 | size_t __nreal) __THROW __nonnull ((2)); | |
5c08f24c UD |
54 | extern int __REDIRECT_NTH (__ptsname_r_alias, (int __fd, char *__buf, |
55 | size_t __buflen), ptsname_r) | |
56 | __nonnull ((2)); | |
d6cd6bf4 UD |
57 | extern int __REDIRECT_NTH (__ptsname_r_chk_warn, |
58 | (int __fd, char *__buf, size_t __buflen, | |
59 | size_t __nreal), __ptsname_r_chk) | |
60 | __nonnull ((2)) __warnattr ("ptsname_r called with buflen bigger than " | |
61 | "size of buf"); | |
b799f91d | 62 | |
b037a293 | 63 | __extern_always_inline int |
dc4bb1c2 | 64 | __NTH (ptsname_r (int __fd, char *__buf, size_t __buflen)) |
b799f91d | 65 | { |
d6cd6bf4 UD |
66 | if (__bos (__buf) != (size_t) -1) |
67 | { | |
68 | if (!__builtin_constant_p (__buflen)) | |
69 | return __ptsname_r_chk (__fd, __buf, __buflen, __bos (__buf)); | |
70 | if (__buflen > __bos (__buf)) | |
71 | return __ptsname_r_chk_warn (__fd, __buf, __buflen, __bos (__buf)); | |
72 | } | |
b799f91d UD |
73 | return __ptsname_r_alias (__fd, __buf, __buflen); |
74 | } | |
75 | ||
76 | ||
77 | extern int __wctomb_chk (char *__s, wchar_t __wchar, size_t __buflen) | |
78 | __THROW __wur; | |
0396de51 UD |
79 | extern int __REDIRECT_NTH (__wctomb_alias, (char *__s, wchar_t __wchar), |
80 | wctomb) __wur; | |
b799f91d | 81 | |
b037a293 | 82 | __extern_always_inline __wur int |
dc4bb1c2 | 83 | __NTH (wctomb (char *__s, wchar_t __wchar)) |
b799f91d UD |
84 | { |
85 | /* We would have to include <limits.h> to get a definition of MB_LEN_MAX. | |
86 | But this would only disturb the namespace. So we define our own | |
87 | version here. */ | |
88 | #define __STDLIB_MB_LEN_MAX 16 | |
89 | #if defined MB_LEN_MAX && MB_LEN_MAX != __STDLIB_MB_LEN_MAX | |
90 | # error "Assumed value of MB_LEN_MAX wrong" | |
91 | #endif | |
92 | if (__bos (__s) != (size_t) -1 && __STDLIB_MB_LEN_MAX > __bos (__s)) | |
93 | return __wctomb_chk (__s, __wchar, __bos (__s)); | |
94 | return __wctomb_alias (__s, __wchar); | |
95 | } | |
02ca3541 UD |
96 | |
97 | ||
98 | extern size_t __mbstowcs_chk (wchar_t *__restrict __dst, | |
a784e502 | 99 | const char *__restrict __src, |
02ca3541 UD |
100 | size_t __len, size_t __dstlen) __THROW; |
101 | extern size_t __REDIRECT_NTH (__mbstowcs_alias, | |
102 | (wchar_t *__restrict __dst, | |
a784e502 | 103 | const char *__restrict __src, |
02ca3541 | 104 | size_t __len), mbstowcs); |
d6cd6bf4 UD |
105 | extern size_t __REDIRECT_NTH (__mbstowcs_chk_warn, |
106 | (wchar_t *__restrict __dst, | |
a784e502 | 107 | const char *__restrict __src, |
d6cd6bf4 UD |
108 | size_t __len, size_t __dstlen), __mbstowcs_chk) |
109 | __warnattr ("mbstowcs called with dst buffer smaller than len " | |
110 | "* sizeof (wchar_t)"); | |
02ca3541 | 111 | |
b037a293 | 112 | __extern_always_inline size_t |
a784e502 | 113 | __NTH (mbstowcs (wchar_t *__restrict __dst, const char *__restrict __src, |
dc4bb1c2 | 114 | size_t __len)) |
02ca3541 | 115 | { |
d6cd6bf4 UD |
116 | if (__bos (__dst) != (size_t) -1) |
117 | { | |
118 | if (!__builtin_constant_p (__len)) | |
119 | return __mbstowcs_chk (__dst, __src, __len, | |
120 | __bos (__dst) / sizeof (wchar_t)); | |
121 | ||
122 | if (__len > __bos (__dst) / sizeof (wchar_t)) | |
123 | return __mbstowcs_chk_warn (__dst, __src, __len, | |
124 | __bos (__dst) / sizeof (wchar_t)); | |
125 | } | |
02ca3541 UD |
126 | return __mbstowcs_alias (__dst, __src, __len); |
127 | } | |
128 | ||
129 | ||
130 | extern size_t __wcstombs_chk (char *__restrict __dst, | |
a784e502 | 131 | const wchar_t *__restrict __src, |
02ca3541 UD |
132 | size_t __len, size_t __dstlen) __THROW; |
133 | extern size_t __REDIRECT_NTH (__wcstombs_alias, | |
134 | (char *__restrict __dst, | |
a784e502 | 135 | const wchar_t *__restrict __src, |
02ca3541 | 136 | size_t __len), wcstombs); |
d6cd6bf4 UD |
137 | extern size_t __REDIRECT_NTH (__wcstombs_chk_warn, |
138 | (char *__restrict __dst, | |
a784e502 | 139 | const wchar_t *__restrict __src, |
d6cd6bf4 UD |
140 | size_t __len, size_t __dstlen), __wcstombs_chk) |
141 | __warnattr ("wcstombs called with dst buffer smaller than len"); | |
02ca3541 | 142 | |
b037a293 | 143 | __extern_always_inline size_t |
a784e502 | 144 | __NTH (wcstombs (char *__restrict __dst, const wchar_t *__restrict __src, |
dc4bb1c2 | 145 | size_t __len)) |
02ca3541 | 146 | { |
d6cd6bf4 UD |
147 | if (__bos (__dst) != (size_t) -1) |
148 | { | |
149 | if (!__builtin_constant_p (__len)) | |
150 | return __wcstombs_chk (__dst, __src, __len, __bos (__dst)); | |
151 | if (__len > __bos (__dst)) | |
152 | return __wcstombs_chk_warn (__dst, __src, __len, __bos (__dst)); | |
153 | } | |
02ca3541 UD |
154 | return __wcstombs_alias (__dst, __src, __len); |
155 | } |