+/* Read advanced virtual memory data from /proc/pid/status */
+static procstat_t *ps_read_vmem (int pid, procstat_t *ps)
+{
+ FILE *fh;
+ char buffer[1024];
+ char filename[64];
+ unsigned long long lib = 0;
+ unsigned long long exe = 0;
+ unsigned long long data = 0;
+ char *fields[8];
+ int numfields;
+
+ ssnprintf (filename, sizeof (filename), "/proc/%i/status", pid);
+ if ((fh = fopen (filename, "r")) == NULL)
+ return (NULL);
+
+ while (fgets (buffer, sizeof(buffer), fh) != NULL)
+ {
+ long long tmp;
+ char *endptr;
+
+ if (strncmp (buffer, "Vm", 2) != 0)
+ continue;
+
+ numfields = strsplit (buffer, fields,
+ STATIC_ARRAY_SIZE (fields));
+
+ if (numfields < 2)
+ continue;
+
+ errno = 0;
+ endptr = NULL;
+ tmp = strtoll (fields[1], &endptr, /* base = */ 10);
+ if ((errno == 0) && (endptr != fields[1]))
+ {
+ if (strncmp (buffer, "VmData", 6) == 0)
+ {
+ data = tmp;
+ }
+ else if (strncmp (buffer, "VmLib", 5) == 0)
+ {
+ lib = tmp;
+ }
+ else if (strncmp(buffer, "VmExe", 5) == 0)
+ {
+ exe = tmp;
+ }
+ }
+ } /* while (fgets) */
+
+ if (fclose (fh))
+ {
+ char errbuf[1024];
+ WARNING ("processes: fclose: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ }
+
+ ps->vmem_data = data * 1024;
+ ps->vmem_code = (exe + lib) * 1024;
+
+ return (ps);
+} /* procstat_t *ps_read_vmem */
+