processes plugin: Fix handling of the ps_disk_{octets,ops} types.

There values were stored in a `long', then `counter_t', then interpreted as
`derive_t'. Changed that to `derive_t' only. Hopefully this fixes a bug
reported by Mark Moseley.

diff --git a/src/processes.c b/src/processes.c
index 8c7700a..5e176c8 100644 (file)
--- a/src/processes.c
+++ b/src/processes.c
@@ -150,10 +150,10 @@ typedef struct procstat_entry_s
        unsigned long cpu_system_counter;
 
        /* io data */
-       long io_rchar;
-       long io_wchar;
-       long io_syscr;
-       long io_syscw;
+       derive_t io_rchar;
+       derive_t io_wchar;
+       derive_t io_syscr;
+       derive_t io_syscw;
 
        struct procstat_entry_s *next;
 } procstat_entry_t;
@@ -179,10 +179,10 @@ typedef struct procstat
        unsigned long cpu_system_counter;
 
        /* io data */
-       long io_rchar;
-       long io_wchar;
-       long io_syscr;
-       long io_syscw;
+       derive_t io_rchar;
+       derive_t io_wchar;
+       derive_t io_syscr;
+       derive_t io_syscw;
 
        struct procstat   *next;
        struct procstat_entry_s *instances;
@@ -664,8 +664,8 @@ static void ps_submit_proc_list (procstat_t *ps)
        if ( (ps->io_rchar != -1) && (ps->io_wchar != -1) )
        {
                sstrncpy (vl.type, "ps_disk_octets", sizeof (vl.type));
-               vl.values[0].counter = ps->io_rchar;
-               vl.values[1].counter = ps->io_wchar;
+               vl.values[0].derive = ps->io_rchar;
+               vl.values[1].derive = ps->io_wchar;
                vl.values_len = 2;
                plugin_dispatch_values (&vl);
        }
@@ -673,8 +673,8 @@ static void ps_submit_proc_list (procstat_t *ps)
        if ( (ps->io_syscr != -1) && (ps->io_syscw != -1) )
        {
                sstrncpy (vl.type, "ps_disk_ops", sizeof (vl.type));
-               vl.values[0].counter = ps->io_syscr;
-               vl.values[1].counter = ps->io_syscw;
+               vl.values[0].derive = ps->io_syscr;
+               vl.values[1].derive = ps->io_syscw;
                vl.values_len = 2;
                plugin_dispatch_values (&vl);
        }
@@ -682,8 +682,8 @@ static void ps_submit_proc_list (procstat_t *ps)
        DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
                        "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
                        "cpu_user_counter = %lu; cpu_system_counter = %lu; "
-                       "io_rchar = %ld; io_wchar = %ld; "
-                       "io_syscr = %ld; io_syscw = %ld;",
+                       "io_rchar = %"PRIi64"; io_wchar = %"PRIi64"; "
+                       "io_syscr = %"PRIi64"; io_syscw = %"PRIi64";",
                        ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
                        ps->vmem_minflt_counter, ps->vmem_majflt_counter,
                        ps->cpu_user_counter, ps->cpu_system_counter,
@@ -734,7 +734,9 @@ static procstat_t *ps_read_io (int pid, procstat_t *ps)
 
        while (fgets (buffer, 1024, fh) != NULL)
        {
-               long *val = NULL;
+               derive_t *val = NULL;
+               long long tmp;
+               char *endptr;
 
                if (strncasecmp (buffer, "rchar:", 6) == 0)
                        val = &(ps->io_rchar);
@@ -752,8 +754,14 @@ static procstat_t *ps_read_io (int pid, procstat_t *ps)
                if (numfields < 2)
                        continue;
 
-               *val = atol (fields[1]);
-       }
+               errno = 0;
+               endptr = NULL;
+               tmp = strtoll (fields[1], &endptr, /* base = */ 10);
+               if ((errno != 0) || (endptr == fields[1]))
+                       *val = -1;
+               else
+                       *val = (derive_t) tmp;
+       } /* while (fgets) */
 
        if (fclose (fh))
        {