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Make random() more random between machines.

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Include also nanoseconds from the current time in the srandom() call.
This should significantly decrease the chance of two machines using the
same random sequence.

Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
This commit is contained in:
Miroslav Lichvar 2013-10-25 14:45:35 +02:00 committed by Richard Cochran
parent 23d31d090e
commit ab84eade0a
1 changed files with 3 additions and 1 deletions
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4
clock.c
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@ -576,12 +576,14 @@ struct clock *clock_create(int phc_index, struct interface *iface, int count,
struct clock *c = &the_clock;
char phc[32];
struct interface udsif;
struct timespec ts;
memset(&udsif, 0, sizeof(udsif));
snprintf(udsif.name, sizeof(udsif.name), "%s", uds_path);
udsif.transport = TRANS_UDS;
srandom(time(NULL));
clock_gettime(CLOCK_REALTIME, &ts);
srandom(ts.tv_sec ^ ts.tv_nsec);
if (c->nports)
clock_destroy(c);