18 lines
306 B
C
18 lines
306 B
C
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#include <u.h>
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#include <libc.h>
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ulong
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truerand(void)
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{
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ulong x;
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static int randfd = -1;
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if(randfd < 0)
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randfd = open("/dev/random", OREAD|OCEXEC);
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if(randfd < 0)
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sysfatal("can't open /dev/random");
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if(read(randfd, &x, sizeof(x)) != sizeof(x))
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sysfatal("can't read /dev/random");
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return x;
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}
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