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2b28661246
The RSYSLOG_DYNNAME used to make test file unique was very long, which potentially causes issues with some test scenarios. see also: https://github.com/rsyslog/rsyslog/pull/2945#issuecomment-417078768 Also, the dynamic port determination method we currently use is not 100% reliable. That port number was used inside the DYNNAME and thus was not necessarily unique. This has now changed to the current time in microseconds plus a hash of the test file name. This should be sufficiently unique. If still not, we can now simply extend the test_id program (e.g. read /dev/urandom).
40 lines
851 B
C
40 lines
851 B
C
#include <stdlib.h>
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#include <sys/time.h>
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#include <stdio.h>
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#include <time.h>
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/* one provided by Aaaron Wiebe based on perl's hashing algorithm
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* (so probably pretty generic). Not for excessively large strings!
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*/
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#if defined(__clang__)
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#pragma GCC diagnostic ignored "-Wunknown-attributes"
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#endif
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static unsigned __attribute__((nonnull(1))) int
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#if defined(__clang__)
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__attribute__((no_sanitize("unsigned-integer-overflow")))
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#endif
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hash_from_string(void *k)
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{
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char *rkey = (char*) k;
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unsigned hashval = 1;
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while (*rkey)
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hashval = hashval * 33 + *rkey++;
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return hashval;
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}
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int main(int argc, char *argv[])
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{
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struct timeval tv;
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struct timezone tz;
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gettimeofday(&tv, &tz);
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if(argc != 2) {
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fprintf(stderr, "usage: test_id test-file-name\n");
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exit(1);
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}
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printf("%06ld_%04.4x", tv.tv_usec, hash_from_string(argv[1]));
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return 0;
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}
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