LCOV - code coverage report
Current view: top level - include - unistd.h (source / functions) Hit Total Coverage
Test: cleaned-coverage.info Lines: 31 36 86.1 %
Date: 2024-10-21 13:06:23 Functions: 0 0 -

          Line data    Source code
       1             : /*
       2             :  * Copyright (C) 2015-2016 Dimitris Papastamos <sin@2f30.org>
       3             :  * Copyright (C) 2022 q66 <q66@chimera-linux.org>
       4             :  *
       5             :  * Permission to use, copy, modify, and/or distribute this software for any
       6             :  * purpose with or without fee is hereby granted.
       7             :  *
       8             :  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
       9             :  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
      10             :  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
      11             :  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
      12             :  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
      13             :  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
      14             :  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
      15             :  */
      16             : 
      17             : #ifndef _FORTIFY_UNISTD_H
      18             : #define _FORTIFY_UNISTD_H
      19             : 
      20             : #if !defined(__cplusplus) && !defined(__clang__)
      21             : __extension__
      22             : #endif
      23             : #include_next <unistd.h>
      24             : 
      25             : #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
      26             : #include "fortify-headers.h"
      27             : 
      28             : #ifdef __cplusplus
      29             : extern "C" {
      30             : #endif
      31             : 
      32             : #undef confstr
      33             : #undef getcwd
      34             : #undef getgroups
      35             : #undef gethostname
      36             : #undef getlogin_r
      37             : #undef pread
      38             : #undef read
      39             : #undef readlink
      40             : #undef readlinkat
      41             : #undef ttyname_r
      42             : #undef write
      43             : 
      44             : __fh_access(write_only, 2, 3)
      45             : #if __has_builtin(__builtin_confstr)
      46             : __diagnose_as_builtin(__builtin_confstr, 1, 2, 3)
      47             : #endif
      48             : _FORTIFY_FN(confstr) size_t confstr(int __n, char * _FORTIFY_POS0 __s, size_t __l)
      49             : {
      50             :         __fh_size_t __b = __fh_bos(__s, 0);
      51           4 :         __fh_size_t __r = __orig_confstr(__n, __s, __b > __l ? __l : __b);
      52             : 
      53           2 :         if (__l > __b && __r > __b)
      54           2 :                 __builtin_trap();
      55             :         return __r;
      56             : }
      57             : 
      58             : __fh_access(write_only, 1, 2)
      59             : #if __has_builtin(__builtin_getcwd)
      60             : __diagnose_as_builtin(__builtin_getcwd, 1, 2)
      61             : #endif
      62             : _FORTIFY_FN(getcwd) char *getcwd(char * _FORTIFY_POS0 __s, size_t __l)
      63             : {
      64             :         __fh_size_t __b = __fh_bos(__s, 0);
      65             : 
      66           1 :         if (__l > __b)
      67           2 :                 __builtin_trap();
      68           2 :         return __orig_getcwd(__s, __l);
      69             : }
      70             : 
      71             : #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
      72             : #undef getdomainname
      73             : __fh_access(write_only, 1, 2)
      74             : #if __has_builtin(__builtin_getdomainname)
      75             : __diagnose_as_builtin(__builtin_getdomainname, 1, 2)
      76             : #endif
      77             : _FORTIFY_FN(getdomainname) int getdomainname(char * _FORTIFY_POS0 __s, size_t __l)
      78             : {
      79             :         __fh_size_t __b = __fh_bos(__s, 0);
      80             : 
      81           1 :         if (__l > __b)
      82           2 :                 __builtin_trap();
      83           2 :         return __orig_getdomainname(__s, __l);
      84             : }
      85             : #endif
      86             : 
      87             : #if __has_builtin(__builtin_getgroups)
      88             : __diagnose_as_builtin(__builtin_getgroups, 1, 2)
      89             : #endif
      90             : _FORTIFY_FN(getgroups) int getgroups(int __l, gid_t * _FORTIFY_POS0 __s)
      91             : {
      92             :         __fh_size_t __b = __fh_bos(__s, 0);
      93             : 
      94           1 :         if (__l > 0 && (unsigned)__l > __b / sizeof(gid_t))
      95           2 :                 __builtin_trap();
      96           2 :         return __orig_getgroups(__l, __s);
      97             : }
      98             : 
      99             : __fh_access(write_only, 1, 2)
     100             : #if __has_builtin(__builtin_gethostname)
     101             : __diagnose_as_builtin(__builtin_gethostname, 1, 2)
     102             : #endif
     103             : _FORTIFY_FN(gethostname) int gethostname(char * _FORTIFY_POS0 __s, size_t __l)
     104             : {
     105             :         __fh_size_t __b = __fh_bos(__s, 0);
     106             : 
     107           1 :         if (__l > __b)
     108           2 :                 __builtin_trap();
     109           2 :         return __orig_gethostname(__s, __l);
     110             : }
     111             : 
     112             : __fh_access(write_only, 1, 2)
     113             : #if __has_builtin(__builtin_getlogin_r)
     114             : __diagnose_as_builtin(__builtin_getlogin_r, 1, 2)
     115             : #endif
     116             : _FORTIFY_FN(getlogin_r) int getlogin_r(char * _FORTIFY_POS0 __s, size_t __l)
     117             : {
     118             :         __fh_size_t __b = __fh_bos(__s, 0);
     119             : 
     120           1 :         if (__l > __b)
     121           2 :                 __builtin_trap();
     122           2 :         return __orig_getlogin_r(__s, __l);
     123             : }
     124             : 
     125             : #if __has_builtin(__builtin_pread)
     126             : __diagnose_as_builtin(__builtin_pread, 1, 2, 3, 4)
     127             : #endif
     128             : _FORTIFY_FN(pread) ssize_t pread(int __f, void * _FORTIFY_POS0 __s,
     129             :                                  size_t __n, off_t __o)
     130             : {
     131             :         __fh_size_t __b = __fh_bos(__s, 0);
     132             : 
     133           1 :         if (__n > __b)
     134           2 :                 __builtin_trap();
     135           0 :         return __orig_pread(__f, __s, __n, __o);
     136             : }
     137             : 
     138             : __fh_access(write_only, 2, 3)
     139             : #if __has_builtin(__builtin_read)
     140             : __diagnose_as_builtin(__builtin_read, 1, 2, 3)
     141             : #endif
     142             : _FORTIFY_FN(read) ssize_t read(int __f, void * _FORTIFY_POS0 __s, size_t __n)
     143             : {
     144             :         __fh_size_t __b = __fh_bos(__s, 0);
     145             : 
     146           1 :         if (__n > __b)
     147           2 :                 __builtin_trap();
     148           0 :         return __orig_read(__f, __s, __n);
     149             : }
     150             : 
     151             : __fh_access(write_only, 2, 3)
     152             : #if __has_builtin(__builtin_readlink)
     153             : __diagnose_as_builtin(__builtin_readlink, 1, 2, 3)
     154             : #endif
     155             : _FORTIFY_FN(readlink) ssize_t readlink(const char *__p,
     156             :                                        char * _FORTIFY_POS0 __s, size_t __n)
     157             : {
     158             :         __fh_size_t __b = __fh_bos(__s, 0);
     159             : 
     160           1 :         if (__n > __b)
     161           2 :                 __builtin_trap();
     162           2 :         return __orig_readlink(__p, __s, __n);
     163             : }
     164             : 
     165             : __fh_access(write_only, 3, 4)
     166             : #if __has_builtin(__builtin_readlinkat)
     167             : __diagnose_as_builtin(__builtin_readlinkat, 1, 2, 3, 4)
     168             : #endif
     169             : _FORTIFY_FN(readlinkat) ssize_t readlinkat(int __f, const char *__p,
     170             :                                            char * _FORTIFY_POS0 __s, size_t __n)
     171             : {
     172             :         __fh_size_t __b = __fh_bos(__s, 0);
     173             : 
     174             :         if (__n > __b)
     175             :                 __builtin_trap();
     176             :         return __orig_readlinkat(__f, __p, __s, __n);
     177             : }
     178             : 
     179             : __fh_access(write_only, 2, 3)
     180             : #if __has_builtin(__builtin_ttyname_r)
     181             : __diagnose_as_builtin(__builtin_ttyname_r, 1, 2, 3)
     182             : #endif
     183             : _FORTIFY_FN(ttyname_r) int ttyname_r(int __f, char * _FORTIFY_POS0 __s,
     184             :                                      size_t __n)
     185             : {
     186             :         __fh_size_t __b = __fh_bos(__s, 0);
     187             : 
     188           1 :         if (__n > __b)
     189           2 :                 __builtin_trap();
     190           0 :         return __orig_ttyname_r(__f, __s, __n);
     191             : }
     192             : 
     193             : __fh_access(read_only, 2, 3)
     194             : #if __has_builtin(__builtin_write)
     195             : __diagnose_as_builtin(__builtin_write, 1, 2, 3)
     196             : #endif
     197             : _FORTIFY_FN(write) ssize_t write(int __f, const void * _FORTIFY_POS0 __s,
     198             :                                  size_t __n)
     199             : {
     200             :         __fh_size_t __b = __fh_bos(__s, 0);
     201             : 
     202           1 :         if (__n > __b)
     203           2 :                 __builtin_trap();
     204           0 :         return __orig_write(__f, __s, __n);
     205             : }
     206             : 
     207             : #if __has_builtin(__builtin_pwrite)
     208             : __diagnose_as_builtin(__builtin_pwrite, 1, 2, 3, 4)
     209             : #endif
     210             : _FORTIFY_FN(pwrite) ssize_t pwrite(int __f, const void * _FORTIFY_POS0 __s,
     211             :                                  size_t __n, off_t __o)
     212             : {
     213             :         __fh_size_t __b = __fh_bos(__s, 0);
     214             : 
     215           1 :         if (__n > __b)
     216           2 :                 __builtin_trap();
     217           0 :         return __orig_pwrite(__f, __s, __n, __o);
     218             : }
     219             : 
     220             : #ifdef __cplusplus
     221             : }
     222             : #endif
     223             : 
     224             : #endif
     225             : 
     226             : #endif

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