projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 698be2d8 CB |
1 | /* Substitute for <sys/random.h>. |
| 2 | Copyright (C) 2020 Free Software Foundation, Inc. | |
| 3 | ||
| 4 | This program is free software; you can redistribute it and/or modify | |
| 5 | it under the terms of the GNU General Public License as published by | |
| 6 | the Free Software Foundation; either version 3, or (at your option) | |
| 7 | any later version. | |
| 8 | ||
| 9 | This program is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | GNU General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU General Public License | |
| 15 | along with this program; if not, see <https://www.gnu.org/licenses/>. */ | |
| 16 | ||
| 17 | # if __GNUC__ >= 3 | |
| 18 | @PRAGMA_SYSTEM_HEADER@ | |
| 19 | # endif | |
| 20 | @PRAGMA_COLUMNS@ | |
| 21 | ||
| 22 | #ifndef _@GUARD_PREFIX@_SYS_RANDOM_H | |
| 23 | ||
| 24 | #if @HAVE_SYS_RANDOM_H@ | |
| 25 | ||
| 26 | /* On Mac OS X 10.5, <sys/random.h> assumes prior inclusion of <sys/types.h>. | |
| 27 | On Max OS X 10.13, <sys/random.h> assumes prior inclusion of a file that | |
| 28 | includes <Availability.h>, such as <stdlib.h> or <unistd.h>. */ | |
| 29 | # if defined __APPLE__ && defined __MACH__ /* Mac OS X */ | |
| 30 | # include <sys/types.h> | |
| 31 | # include <stdlib.h> | |
| 32 | # endif | |
| 33 | ||
| 34 | /* The include_next requires a split double-inclusion guard. */ | |
| 35 | # @INCLUDE_NEXT@ @NEXT_SYS_RANDOM_H@ | |
| 36 | ||
| 37 | #endif | |
| 38 | ||
| 39 | #ifndef _@GUARD_PREFIX@_SYS_RANDOM_H | |
| 40 | #define _@GUARD_PREFIX@_SYS_RANDOM_H | |
| 41 | ||
| 42 | #include <sys/types.h> | |
| 43 | ||
| 44 | /* Define the GRND_* constants. */ | |
| 45 | #ifndef GRND_NONBLOCK | |
| 46 | # define GRND_NONBLOCK 1 | |
| 47 | # define GRND_RANDOM 2 | |
| 48 | #endif | |
| 49 | ||
| 50 | /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */ | |
| 51 | ||
| 52 | /* The definition of _GL_ARG_NONNULL is copied here. */ | |
| 53 | ||
| 54 | /* The definition of _GL_WARN_ON_USE is copied here. */ | |
| 55 | ||
| 56 | ||
| 57 | /* Declare overridden functions. */ | |
| 58 | ||
| 59 | ||
| 60 | #if @GNULIB_GETRANDOM@ | |
| 61 | /* Fill a buffer with random bytes. */ | |
| 62 | # if @REPLACE_GETRANDOM@ | |
| 63 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
| 64 | # undef getrandom | |
| 65 | # define getrandom rpl_getrandom | |
| 66 | # endif | |
| 67 | _GL_FUNCDECL_RPL (getrandom, ssize_t, | |
| 68 | (void *buffer, size_t length, unsigned int flags) | |
| 69 | _GL_ARG_NONNULL ((1))); | |
| 70 | _GL_CXXALIAS_RPL (getrandom, ssize_t, | |
| 71 | (void *buffer, size_t length, unsigned int flags)); | |
| 72 | # else | |
| 73 | # if !@HAVE_GETRANDOM@ | |
| 74 | _GL_FUNCDECL_SYS (getrandom, ssize_t, | |
| 75 | (void *buffer, size_t length, unsigned int flags) | |
| 76 | _GL_ARG_NONNULL ((1))); | |
| 77 | # endif | |
| 78 | _GL_CXXALIAS_SYS (getrandom, ssize_t, | |
| 79 | (void *buffer, size_t length, unsigned int flags)); | |
| 80 | # endif | |
| 81 | _GL_CXXALIASWARN (getrandom); | |
| 82 | #elif defined GNULIB_POSIXCHECK | |
| 83 | # undef getrandom | |
| 84 | # if HAVE_RAW_DECL_GETRANDOM | |
| 85 | _GL_WARN_ON_USE (getrandom, "getrandom is unportable - " | |
| 86 | "use gnulib module getrandom for portability"); | |
| 87 | # endif | |
| 88 | #endif | |
| 89 | ||
| 90 | ||
| 91 | #endif /* _@GUARD_PREFIX@_SYS_RANDOM_H */ | |
| 92 | #endif /* _@GUARD_PREFIX@_SYS_RANDOM_H */ |