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https://github.com/wolfcw/libfaketime.git
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54994ceb0d
Previously, we had failed to test code with getrandom() against LD_PRELOAD when FAKERANDOM_SEED was unset. We also want to try calling getrandom twice in a single process to make sure that works OK.
30 lines
676 B
C
30 lines
676 B
C
#include <stdio.h>
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#include <sys/random.h>
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#include <stdlib.h>
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int base() {
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char *buf = calloc(100, 1);
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size_t buflen = 100;
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unsigned flags = GRND_NONBLOCK;
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fprintf(stdout, "Before getrandom:\n");
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for (size_t i=0; i < buflen; i++) { fprintf(stdout, "%hhu ", buf[i]); }
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fprintf(stdout, "\n");
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int result = getrandom(buf, buflen, flags);
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fprintf(stdout, "getrandom() result: %d\n", result);
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if (result == -1) perror("getrandom() unsuccessful");
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fprintf(stdout, "After getrandom:\n");
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for (size_t i=0; i < buflen; i++) { fprintf(stdout, "%hhu ", buf[i]); }
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fprintf(stdout, "\n");
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free(buf);
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return 0;
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}
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int main() {
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return base() + base();
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}
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