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24 lines
408 B
C
24 lines
408 B
C
#include <wasi/core.h>
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#include <errno.h>
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#include <unistd.h>
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#ifdef _REENTRANT
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#error With threads support, getentropy is not intended to be a cancellation point.
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#endif
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int getentropy(void *buffer, size_t len) {
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if (len > 256) {
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errno = EIO;
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return -1;
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}
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int r = __wasi_random_get(buffer, len);
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if (r != 0) {
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errno = r;
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return -1;
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}
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return 0;
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}
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