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658b5848a8
Due to the built-in tables, __NR_getrandom is always defined. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
33 lines
1.2 KiB
C
33 lines
1.2 KiB
C
/* Implementation of the getrandom system call.
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Copyright (C) 2016-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <sys/random.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sysdep-cancel.h>
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/* Write up to LENGTH bytes of randomness starting at BUFFER.
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Return the number of bytes written, or -1 on error. */
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ssize_t
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__getrandom (void *buffer, size_t length, unsigned int flags)
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{
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return SYSCALL_CANCEL (getrandom, buffer, length, flags);
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}
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libc_hidden_def (__getrandom)
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weak_alias (__getrandom, getrandom)
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