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77008252 | 1 | /* Checking macros for unistd functions. |
a945c346 | 2 | Copyright (C) 2005-2024 Free Software Foundation, Inc. |
77008252 JJ |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
748086b7 | 8 | Software Foundation; either version 3, or (at your option) any later |
77008252 JJ |
9 | version. |
10 | ||
11 | In addition to the permissions in the GNU General Public License, the | |
12 | Free Software Foundation gives you unlimited permission to link the | |
13 | compiled version of this file into combinations with other programs, | |
14 | and to distribute those combinations without any restriction coming | |
15 | from the use of this file. (The General Public License restrictions | |
16 | do apply in other respects; for example, they cover modification of | |
17 | the file, and distribution when not linked into a combine | |
18 | executable.) | |
19 | ||
20 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
21 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
22 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
23 | for more details. | |
24 | ||
748086b7 JJ |
25 | Under Section 7 of GPL version 3, you are granted additional |
26 | permissions described in the GCC Runtime Library Exception, version | |
27 | 3.1, as published by the Free Software Foundation. | |
28 | ||
29 | You should have received a copy of the GNU General Public License and | |
30 | a copy of the GCC Runtime Library Exception along with this program; | |
31 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
32 | <http://www.gnu.org/licenses/>. */ | |
77008252 | 33 | |
77008252 JJ |
34 | |
35 | #ifndef _SSP_UNISTD_H | |
36 | #define _SSP_UNISTD_H 1 | |
37 | ||
38 | #include <ssp.h> | |
39 | #include_next <unistd.h> | |
40 | ||
41 | #if __SSP_FORTIFY_LEVEL > 0 | |
42 | ||
43 | #undef read | |
44 | #undef readlink | |
45 | #undef getcwd | |
46 | ||
47 | extern ssize_t __SSP_REDIRECT (__read_alias, (int __fd, void *__buf, | |
48 | size_t __nbytes), read); | |
49 | ||
50 | extern inline __attribute__((__always_inline__)) ssize_t | |
51 | read (int __fd, void *__buf, size_t __nbytes) | |
52 | { | |
53 | if (__ssp_bos0 (__buf) != (size_t) -1 && __nbytes > __ssp_bos0 (__buf)) | |
54 | __chk_fail (); | |
55 | return __read_alias (__fd, __buf, __nbytes); | |
56 | } | |
57 | ||
58 | extern int __SSP_REDIRECT (__readlink_alias, | |
59 | (const char *__restrict__ __path, | |
60 | char *__restrict__ __buf, size_t __len), | |
61 | readlink); | |
62 | ||
63 | extern inline __attribute__((__always_inline__)) int | |
64 | readlink (const char *__restrict__ __path, char *__restrict__ __buf, | |
65 | size_t __len) | |
66 | { | |
67 | if (__ssp_bos (__buf) != (size_t) -1 && __len > __ssp_bos (__buf)) | |
68 | __chk_fail (); | |
69 | return __readlink_alias (__path, __buf, __len); | |
70 | } | |
71 | ||
72 | extern char *__SSP_REDIRECT (__getcwd_alias, | |
73 | (char *__buf, size_t __size), getcwd); | |
74 | ||
75 | extern inline __attribute__((__always_inline__)) char * | |
76 | getcwd (char *__buf, size_t __size) | |
77 | { | |
78 | if (__ssp_bos (__buf) != (size_t) -1 && __size > __ssp_bos (__buf)) | |
79 | __chk_fail (); | |
80 | return __getcwd_alias (__buf, __size); | |
81 | } | |
82 | ||
83 | #endif /* __SSP_FORTIFY_LEVEL > 0 */ | |
84 | #endif /* _SSP_UNISTD_H */ |