1 | /* Checking macros for stdio functions.
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2 | Copyright (C) 2004, 2005, 2009 Free Software Foundation, Inc.
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3 |
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4 | This file is part of GCC.
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5 |
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6 | GCC is free software; you can redistribute it and/or modify it under
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7 | the terms of the GNU General Public License as published by the Free
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8 | Software Foundation; either version 3, or (at your option) any later
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9 | version.
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10 |
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11 | In addition to the permissions in the GNU General Public License, the
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12 | Free Software Foundation gives you unlimited permission to link the
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13 | compiled version of this file into combinations with other programs,
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14 | and to distribute those combinations without any restriction coming
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15 | from the use of this file. (The General Public License restrictions
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16 | do apply in other respects; for example, they cover modification of
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17 | the file, and distribution when not linked into a combine
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18 | executable.)
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19 |
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20 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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21 | WARRANTY; without even the implied warranty of MERCHANTABILITY or
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22 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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23 | for more details.
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24 |
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25 | Under Section 7 of GPL version 3, you are granted additional
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26 | permissions described in the GCC Runtime Library Exception, version
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27 | 3.1, as published by the Free Software Foundation.
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28 |
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29 | You should have received a copy of the GNU General Public License and
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30 | a copy of the GCC Runtime Library Exception along with this program;
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31 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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32 | <http://www.gnu.org/licenses/>. */
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33 |
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34 |
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35 | #ifndef _SSP_STDIO_H
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36 | #define _SSP_STDIO_H 1
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37 |
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38 | #include <ssp.h>
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39 | #include_next <stdio.h>
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40 |
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41 | #if __SSP_FORTIFY_LEVEL > 0
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42 |
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43 | #include <stdarg.h>
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44 |
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45 | #undef sprintf
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46 | #undef vsprintf
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47 | #undef snprintf
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48 | #undef vsnprintf
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49 | #undef gets
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50 | #undef fgets
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51 |
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52 | extern int __sprintf_chk (char *__restrict__ __s, int __flag, size_t __slen,
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53 | __const char *__restrict__ __format, ...);
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54 | extern int __vsprintf_chk (char *__restrict__ __s, int __flag, size_t __slen,
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55 | __const char *__restrict__ __format,
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56 | va_list __ap);
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57 |
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58 | #define sprintf(str, ...) \
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59 | __builtin___sprintf_chk (str, 0, __ssp_bos (str), \
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60 | __VA_ARGS__)
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61 | #define vsprintf(str, fmt, ap) \
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62 | __builtin___vsprintf_chk (str, 0, __ssp_bos (str), fmt, ap)
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63 |
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64 | extern int __snprintf_chk (char *__restrict__ __s, size_t __n, int __flag,
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65 | size_t __slen, __const char *__restrict__ __format,
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66 | ...);
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67 | extern int __vsnprintf_chk (char *__restrict__ __s, size_t __n, int __flag,
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68 | size_t __slen, __const char *__restrict__ __format,
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69 | va_list __ap);
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70 |
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71 | #define snprintf(str, len, ...) \
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72 | __builtin___snprintf_chk (str, len, 0, __ssp_bos (str), __VA_ARGS__)
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73 | #define vsnprintf(str, len, fmt, ap) \
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74 | __builtin___vsnprintf_chk (str, len, 0, __ssp_bos (str), fmt, ap)
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75 |
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76 | extern char *__gets_chk (char *__str, size_t);
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77 | extern char *__SSP_REDIRECT (__gets_alias, (char *__str), gets);
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78 |
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79 | extern inline __attribute__((__always_inline__)) char *
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80 | gets (char *__str)
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81 | {
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82 | if (__ssp_bos (__str) != (size_t) -1)
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83 | return __gets_chk (__str, __ssp_bos (__str));
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84 | return __gets_alias (__str);
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85 | }
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86 |
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87 | extern char *__SSP_REDIRECT (__fgets_alias,
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88 | (char *__restrict__ __s, int __n,
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89 | FILE *__restrict__ __stream), fgets);
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90 |
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91 | extern inline __attribute__((__always_inline__)) char *
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92 | fgets (char *__restrict__ __s, int __n, FILE *__restrict__ __stream)
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93 | {
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94 | if (__ssp_bos (__s) != (size_t) -1 && (size_t) __n > __ssp_bos (__s))
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95 | __chk_fail ();
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96 | return __fgets_alias (__s, __n, __stream);
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97 | }
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98 |
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99 | #endif /* __SSP_FORTIFY_LEVEL > 0 */
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100 | #endif /* _SSP_STDIO_H */
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