static kstat_t *ksp;
/* #endif HAVE_LIBKSTAT */
-#elif HAVE_SWAPCTL
-/* No global variables */
+#elif HAVE_SWAPCTL && HAVE_SWAPCTL_TWO_ARGS
+static derive_t pagesize;
/* #endif HAVE_SWAPCTL */
#elif defined(VM_SWAPUSAGE)
#elif HAVE_PERFSTAT
static int pagesize;
static perfstat_memory_total_t pmemory;
-/*# endif HAVE_PERFSTAT */
+/*# endif HAVE_PERFSTAT */
#else
# error "No applicable input method."
ksp = NULL;
/* #endif HAVE_LIBKSTAT */
-#elif HAVE_SWAPCTL
- /* No init stuff */
+#elif HAVE_SWAPCTL && HAVE_SWAPCTL_TWO_ARGS
+ /* getpagesize(3C) tells me this does not fail.. */
+ pagesize = (derive_t) getpagesize ();
/* #endif HAVE_SWAPCTL */
#elif defined(VM_SWAPUSAGE)
char *fields[8];
int numfields;
+ _Bool old_kernel=0;
+
derive_t swap_used = 0;
derive_t swap_cached = 0;
derive_t swap_free = 0;
return (-1);
}
- while (fgets (buffer, 1024, fh) != NULL)
+ while (fgets (buffer, sizeof (buffer), fh) != NULL)
{
- derive_t *val = NULL;
-
- if (strncasecmp (buffer, "SwapTotal:", 10) == 0)
- val = &swap_total;
- else if (strncasecmp (buffer, "SwapFree:", 9) == 0)
- val = &swap_free;
- else if (strncasecmp (buffer, "SwapCached:", 11) == 0)
- val = &swap_cached;
- else
- continue;
-
- numfields = strsplit (buffer, fields, 8);
-
+ numfields = strsplit (buffer, fields, STATIC_ARRAY_SIZE (fields));
if (numfields < 2)
continue;
- *val = (derive_t) atoll (fields[1]) * 1024LL;
+ if (strcasecmp (fields[0], "SwapTotal:") == 0)
+ strtoderive (fields[1], &swap_total);
+ else if (strcasecmp (fields[0], "SwapFree:") == 0)
+ strtoderive (fields[1], &swap_free);
+ else if (strcasecmp (fields[0], "SwapCached:") == 0)
+ strtoderive (fields[1], &swap_cached);
}
if (fclose (fh))
if ((fh = fopen ("/proc/vmstat", "r")) == NULL)
{
- char errbuf[1024];
- WARNING ("swap: fopen: %s",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (-1);
+ // /proc/vmstat does not exist in kernels <2.6
+ if ((fh = fopen ("/proc/stat", "r")) == NULL )
+ {
+ char errbuf[1024];
+ WARNING ("swap: fopen: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (-1);
+ }
+ else
+ old_kernel = 1;
}
- while (fgets (buffer, 1024, fh) != NULL)
+ while (fgets (buffer, sizeof (buffer), fh) != NULL)
{
- derive_t *val = NULL;
-
- if (strncasecmp (buffer, "pswpin", 6) == 0)
- val = &swap_in;
- else if (strncasecmp (buffer, "pswpout", 7) == 0)
- val = &swap_out;
- else
- continue;
-
- numfields = strsplit (buffer, fields, 8);
-
- if (numfields < 2)
- continue;
-
- *val = (derive_t) atoll (fields[1]);
- }
+ numfields = strsplit (buffer, fields, STATIC_ARRAY_SIZE (fields));
+
+ if (!old_kernel)
+ {
+ if (numfields != 2)
+ continue;
+
+ if (strcasecmp ("pswpin", fields[0]) == 0)
+ strtoderive (fields[1], &swap_in);
+ else if (strcasecmp ("pswpout", fields[0]) == 0)
+ strtoderive (fields[1], &swap_out);
+ }
+ else /* if (old_kernel) */
+ {
+ if (numfields != 3)
+ continue;
+
+ if (strcasecmp ("page", fields[0]) == 0)
+ {
+ strtoderive (fields[1], &swap_in);
+ strtoderive (fields[2], &swap_out);
+ }
+ }
+ } /* while (fgets) */
if (fclose (fh))
{
sstrerror (errno, errbuf, sizeof (errbuf)));
}
- swap_submit ("used", swap_used, DS_TYPE_GAUGE);
- swap_submit ("free", swap_free, DS_TYPE_GAUGE);
- swap_submit ("cached", swap_cached, DS_TYPE_GAUGE);
- swap_submit ("in", swap_in, DS_TYPE_DERIVE);
+ swap_submit ("used", 1024 * swap_used, DS_TYPE_GAUGE);
+ swap_submit ("free", 1024 * swap_free, DS_TYPE_GAUGE);
+ swap_submit ("cached", 1024 * swap_cached, DS_TYPE_GAUGE);
+ swap_submit ("in", swap_in, DS_TYPE_DERIVE);
swap_submit ("out", swap_out, DS_TYPE_DERIVE);
-
/* #endif KERNEL_LINUX */
#elif HAVE_LIBKSTAT
* However, Solaris does not allow to allocated/reserved more than the
* available swap (physical memory + disk swap), so the pedant may
* prefer: allocated + unallocated = reserved, available
- *
+ *
* We map the above to: used + resv = n/a, free
*
* Does your brain hurt yet? - Christophe Kalt
/* #endif HAVE_LIBKSTAT */
#elif HAVE_SWAPCTL
+ #if HAVE_SWAPCTL_TWO_ARGS
+ swaptbl_t *s;
+ char strtab[255];
+ int swap_num;
+ int status;
+ int i;
+
+ derive_t avail = 0;
+ derive_t total = 0;
+
+ swap_num = swapctl (SC_GETNSWP, NULL);
+ if (swap_num < 0)
+ {
+ ERROR ("swap plugin: swapctl (SC_GETNSWP) failed with status %i.",
+ swap_num);
+ return (-1);
+ }
+ else if (swap_num == 0)
+ return (0);
+
+ s = (swaptbl_t *) smalloc (swap_num * sizeof (swapent_t) + sizeof (struct swaptable));
+ if (s == NULL)
+ {
+ ERROR ("swap plugin: smalloc failed.");
+ return (-1);
+ }
+ /* Initialize string pointers. We have them share the same buffer as we don't care
+ * about the device's name, only its size. This saves memory and alloc/free ops */
+ for (i = 0; i < (swap_num + 1); i++) {
+ s->swt_ent[i].ste_path = strtab;
+ }
+ s->swt_n = swap_num + 1;
+ status = swapctl (SC_LIST, s);
+ if (status != swap_num)
+ {
+ ERROR ("swap plugin: swapctl (SC_LIST) failed with status %i.",
+ status);
+ sfree (s);
+ return (-1);
+ }
+
+ for (i = 0; i < swap_num; i++)
+ {
+ if ((s->swt_ent[i].ste_flags & ST_INDEL) != 0)
+ continue;
+
+ avail += ((derive_t) s->swt_ent[i].ste_free)
+ * pagesize;
+ total += ((derive_t) s->swt_ent[i].ste_pages)
+ * pagesize;
+ }
+
+ if (total < avail)
+ {
+ ERROR ("swap plugin: Total swap space (%"PRIi64") "
+ "is less than free swap space (%"PRIi64").",
+ total, avail);
+ sfree (s);
+ return (-1);
+ }
+
+ swap_submit ("used", total - avail, DS_TYPE_GAUGE);
+ swap_submit ("free", avail, DS_TYPE_GAUGE);
+
+ sfree (s);
+ /* #endif HAVE_SWAPCTL_TWO_ARGS */
+ #elif HAVE_SWAPCTL_THREE_ARGS
+
struct swapent *swap_entries;
int swap_num;
int status;
derive_t used = 0;
derive_t total = 0;
- /*
- * XXX: This is the syntax for the *BSD `swapctl', which has the
- * following prototype:
- * swapctl (int cmd, void *arg, int misc);
- *
- * HP-UX and Solaris (and possibly other UNIXes) provide `swapctl',
- * too, but with the following prototype:
- * swapctl (int cmd, void *arg);
- *
- * Solaris is usually handled in the KSTAT case above. For other UNIXes
- * a separate case for the other version of `swapctl' may be necessary.
- */
swap_num = swapctl (SWAP_NSWAP, NULL, 0);
if (swap_num < 0)
{
swap_submit ("free", total - used, DS_TYPE_GAUGE);
sfree (swap_entries);
+ #endif /* HAVE_SWAPCTL_THREE_ARGS */
/* #endif HAVE_SWAPCTL */
#elif defined(VM_SWAPUSAGE)
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