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uptime: Check the return value of various functions.

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This commit is contained in:
Qualys Security Advisory
-
committed by Craig Small
parent b51ca2a1f8
commit 2fc42db322
1 changed files with 6 additions and 3 deletions
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9
uptime.c
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@@ -39,15 +39,18 @@ static void print_uptime_since()
struct timeval tim;
/* Get the current time and convert it to a double */
gettimeofday(&tim, NULL);
if (gettimeofday(&tim, NULL) != 0)
xerr(EXIT_FAILURE, "gettimeofday");
now = tim.tv_sec + (tim.tv_usec / 1000000.0);
/* Get the uptime and calculate when that was */
uptime(&uptime_secs, &idle_secs);
if (uptime(&uptime_secs, &idle_secs) == 0)
xerrx(EXIT_FAILURE, "uptime");
up_since_secs = (time_t) ((now - uptime_secs) + 0.5);
/* Show this */
up_since = localtime(&up_since_secs);
if ((up_since = localtime(&up_since_secs)) == NULL)
xerrx(EXIT_FAILURE, "localtime");
printf("%04d-%02d-%02d %02d:%02d:%02d\n",
up_since->tm_year + 1900, up_since->tm_mon + 1, up_since->tm_mday,
up_since->tm_hour, up_since->tm_min, up_since->tm_sec);