diff options
Diffstat (limited to 'lib/getrandom.c')
-rw-r--r-- | lib/getrandom.c | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/lib/getrandom.c b/lib/getrandom.c index f0b3f53500..44283cf181 100644 --- a/lib/getrandom.c +++ b/lib/getrandom.c @@ -1,18 +1,18 @@ /* Obtain a series of random bytes. - Copyright 2020 Free Software Foundation, Inc. + Copyright 2020-2024 Free Software Foundation, Inc. - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. + This file is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. - This program is distributed in the hope that it will be useful, + This file is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. + GNU Lesser General Public License for more details. - You should have received a copy of the GNU General Public License + You should have received a copy of the GNU Lesser General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ /* Written by Paul Eggert. */ @@ -23,13 +23,21 @@ #include <errno.h> #include <fcntl.h> -#include <stdbool.h> #include <unistd.h> #if defined _WIN32 && ! defined __CYGWIN__ # define WIN32_LEAN_AND_MEAN # include <windows.h> -# include <bcrypt.h> +# if HAVE_BCRYPT_H +# include <bcrypt.h> +# else +# define NTSTATUS LONG +typedef void * BCRYPT_ALG_HANDLE; +# define BCRYPT_USE_SYSTEM_PREFERRED_RNG 0x00000002 +# if HAVE_LIB_BCRYPT +extern NTSTATUS WINAPI BCryptGenRandom (BCRYPT_ALG_HANDLE, UCHAR *, ULONG, ULONG); +# endif +# endif # if !HAVE_LIB_BCRYPT # include <wincrypt.h> # ifndef CRYPT_VERIFY_CONTEXT @@ -169,7 +177,11 @@ getrandom (void *buffer, size_t length, unsigned int flags) + (flags & GRND_NONBLOCK ? O_NONBLOCK : 0)); fd = open (randdevice[devrandom], oflags); if (fd < 0) - return fd; + { + if (errno == ENOENT || errno == ENOTDIR) + errno = ENOSYS; + return -1; + } randfd[devrandom] = fd; } |