29 lines
611 B
C++
29 lines
611 B
C++
// Copyright (c) Vitaliy Filippov, 2019+
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// License: VNPL-1.1 (see README.md for details)
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdint.h>
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#include "malloc_or_die.h"
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#include "errno.h"
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#include "crc32c.h"
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int main(int narg, char *args[])
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{
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int bufsize = 65536;
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uint8_t *buf = (uint8_t*)malloc_or_die(bufsize);
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uint32_t csum = 0;
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while (1)
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{
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int r = read(0, buf, bufsize);
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if (r <= 0 && errno != EAGAIN && errno != EINTR)
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break;
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csum = crc32c(csum, buf, r);
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}
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free(buf);
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printf("%08x\n", csum);
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return 0;
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}
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