library: tweak logic for /proc not mounted, <pids> api

Since 'procps_uptime' will access the /proc filesystem
the <pids> 'new' guy should should protect against the
possibility /proc isn't mounted when 'boot_seconds' is
established. A zero is better than the negative value.

[ the only distortion would be to PIDS_TIME_ELAPSED. ]

Signed-off-by: Jim Warner <james.warner@comcast.net>

diff --git a/proc/pids.c b/proc/pids.c
index e99abdd1a4221d28f536146da4880a7fcde36331..b619b0e7d6e4df99b1a83e1e4e43761133c3d139 100644 (file)
--- a/proc/pids.c
+++ b/proc/pids.c
@@ -1192,10 +1192,11 @@ PROCPS_EXPORT int procps_pids_new (
 
     pgsz = getpagesize();
     while (pgsz > 1024) { pgsz >>= 1; p->pgs2k_shift++; }
-
     p->hertz = procps_hertz_get();
-    procps_uptime(&uptime_secs, NULL);
-    p->boot_seconds = uptime_secs;
+
+    // in case 'fatal_proc_unmounted' wasn't called and /proc isn't mounted
+    if (0 >= procps_uptime(&uptime_secs, NULL))
+        p->boot_seconds = uptime_secs;
 
     numa_init();