fortify-headers

standalone fortify-source implementation
git clone git://git.2f30.org/fortify-headers
Log | Files | Refs | README | LICENSE

select.h (1972B)

      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_SYS_SELECT_H
     18 #define _FORTIFY_SYS_SELECT_H
     19 
     20 #if !defined(__cplusplus) && !defined(__clang__)
     21 __extension__
     22 #endif
     23 #include_next <sys/select.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 #ifdef __clang__
     33 #define _FORTIFY_FD_POS0 const __attribute__((__pass_object_size__(0)))
     34 #else
     35 #define _FORTIFY_FD_POS0
     36 #endif
     37 
     38 static __inline__ __attribute__((__always_inline__,__gnu_inline__,__artificial__))
     39 void __fortify_FD_CLR(int __f, fd_set * _FORTIFY_FD_POS0 __s)
     40 {
     41 	size_t __b = __bos(__s, 0);
     42 
     43 	if (__f < 0 || __f >= FD_SETSIZE || __b < sizeof(fd_set))
     44 		__builtin_trap();
     45 	FD_CLR(__f, __s);
     46 }
     47 
     48 static __inline__ __attribute__((__always_inline__,__gnu_inline__,__artificial__))
     49 void __fortify_FD_SET(int __f, fd_set * _FORTIFY_FD_POS0 __s)
     50 {
     51 	size_t __b = __bos(__s, 0);
     52 
     53 	if (__f < 0 || __f >= FD_SETSIZE || __b < sizeof(fd_set))
     54 		__builtin_trap();
     55 	FD_SET(__f, __s);
     56 }
     57 
     58 #undef _FORTIFY_FD_POS0
     59 
     60 #undef FD_CLR
     61 #define FD_CLR(fd, set) __fortify_FD_CLR(fd, set)
     62 #undef FD_SET
     63 #define FD_SET(fd, set) __fortify_FD_SET(fd, set)
     64 
     65 #ifdef __cplusplus
     66 }
     67 #endif
     68 
     69 #endif
     70 
     71 #endif