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1 | /* Checking macros for stdlib functions. |
2 | Copyright (C) 2005 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, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
19 | ||
20 | #ifndef _STDLIB_H | |
21 | # error "Never include <bits/stdlib.h> directly; use <stdlib.h> instead." | |
22 | #endif | |
23 | ||
24 | extern char *__realpath_chk (__const char *__restrict __name, | |
25 | char *__restrict __resolved, | |
26 | size_t __resolvedlen) __THROW __wur; | |
27 | extern char *__REDIRECT_NTH (__realpath_alias, | |
28 | (__const char *__restrict __name, | |
29 | char *__restrict __resolved), realpath) __wur; | |
30 | ||
31 | extern __always_inline __wur char * | |
32 | __NTH (realpath (__const char *__restrict __name, char *__restrict __resolved)) | |
33 | { | |
34 | if (__bos (__resolved) != (size_t) -1) | |
35 | return __realpath_chk (__name, __resolved, __bos (__resolved)); | |
36 | ||
37 | return __realpath_alias (__name, __resolved); | |
38 | } | |
39 | ||
40 | ||
41 | extern int __ptsname_r_chk (int __fd, char *__buf, size_t __buflen, | |
42 | size_t __nreal) __THROW __nonnull ((2)); | |
43 | extern int __REDIRECT_NTH (__ptsname_r_alias, (int __fd, char *__buf, | |
44 | size_t __buflen), ptsname_r) | |
45 | __nonnull ((2)); | |
46 | ||
47 | extern __always_inline int | |
48 | __NTH (ptsname_r (int __fd, char *__buf, size_t __buflen)) | |
49 | { | |
50 | if (__bos (__buf) != (size_t) -1 | |
51 | && (!__builtin_constant_p (__buflen) || __buflen > __bos (__buf))) | |
52 | return __ptsname_r_chk (__fd, __buf, __buflen, __bos (__buf)); | |
53 | return __ptsname_r_alias (__fd, __buf, __buflen); | |
54 | } | |
55 | ||
56 | ||
57 | extern int __wctomb_chk (char *__s, wchar_t __wchar, size_t __buflen) | |
58 | __THROW __wur; | |
59 | extern int __REDIRECT_NTH (__wctomb_alias, (char *__s, wchar_t __wchar), | |
60 | wctomb) __wur; | |
61 | ||
62 | extern __always_inline __wur int | |
63 | __NTH (wctomb (char *__s, wchar_t __wchar)) | |
64 | { | |
65 | /* We would have to include <limits.h> to get a definition of MB_LEN_MAX. | |
66 | But this would only disturb the namespace. So we define our own | |
67 | version here. */ | |
68 | #define __STDLIB_MB_LEN_MAX 16 | |
69 | #if defined MB_LEN_MAX && MB_LEN_MAX != __STDLIB_MB_LEN_MAX | |
70 | # error "Assumed value of MB_LEN_MAX wrong" | |
71 | #endif | |
72 | if (__bos (__s) != (size_t) -1 && __STDLIB_MB_LEN_MAX > __bos (__s)) | |
73 | return __wctomb_chk (__s, __wchar, __bos (__s)); | |
74 | return __wctomb_alias (__s, __wchar); | |
75 | } | |
76 | ||
77 | ||
78 | extern size_t __mbstowcs_chk (wchar_t *__restrict __dst, | |
79 | __const char *__restrict __src, | |
80 | size_t __len, size_t __dstlen) __THROW; | |
81 | extern size_t __REDIRECT_NTH (__mbstowcs_alias, | |
82 | (wchar_t *__restrict __dst, | |
83 | __const char *__restrict __src, | |
84 | size_t __len), mbstowcs); | |
85 | ||
86 | extern __always_inline size_t | |
87 | __NTH (mbstowcs (wchar_t *__restrict __dst, __const char *__restrict __src, | |
88 | size_t __len)) | |
89 | { | |
90 | if (__bos (__dst) != (size_t) -1 | |
91 | && (!__builtin_constant_p (__len) | |
92 | || __len > __bos (__dst) / sizeof (wchar_t))) | |
93 | return __mbstowcs_chk (__dst, __src, __len, | |
94 | __bos (__dst) / sizeof (wchar_t)); | |
95 | return __mbstowcs_alias (__dst, __src, __len); | |
96 | } | |
97 | ||
98 | ||
99 | extern size_t __wcstombs_chk (char *__restrict __dst, | |
100 | __const wchar_t *__restrict __src, | |
101 | size_t __len, size_t __dstlen) __THROW; | |
102 | extern size_t __REDIRECT_NTH (__wcstombs_alias, | |
103 | (char *__restrict __dst, | |
104 | __const wchar_t *__restrict __src, | |
105 | size_t __len), wcstombs); | |
106 | ||
107 | extern __always_inline size_t | |
108 | __NTH (wcstombs (char *__restrict __dst, __const wchar_t *__restrict __src, | |
109 | size_t __len)) | |
110 | { | |
111 | if (__bos (__dst) != (size_t) -1 | |
112 | && (!__builtin_constant_p (__len) || __len > __bos (__dst))) | |
113 | return __wcstombs_chk (__dst, __src, __len, __bos (__dst)); | |
114 | return __wcstombs_alias (__dst, __src, __len); | |
115 | } |