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libs/libc/getrandom(2): add ORed bit mask definition

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Change-Id: I1a805420f3ace0b844452dc126d04534680e96f2
Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an
2020-12-07 11:13:53 +08:00
committed by chao an
parent 511d65392a
commit 8a7703b2be
1 changed files with 16 additions and 0 deletions
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include/sys/random.h
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@@ -44,6 +44,22 @@
#include <nuttx/config.h>
#include <stddef.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/*
* Flags for getrandom(2)
*
* GRND_NONBLOCK Don't block and return EAGAIN instead
* GRND_RANDOM No effect
* GRND_INSECURE Return non-cryptographic random bytes
*/
#define GRND_NONBLOCK 0x0001
#define GRND_RANDOM 0x0002
#define GRND_INSECURE 0x0004
/****************************************************************************
* Public Function Prototypes
****************************************************************************/