Support for swap -s for solaris. Also changes size of swap to MBs through

a conversion amount in configure. Possible breakage on other OSes


git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@561 f882894a-f735-0410-b71e-b25c423dba1c

1 files changed, 91 insertions, 80 deletions

diff --git a/plugins/check_swap.c b/plugins/check_swap.c
index ad5eb25..63af4cc 100644
--- a/plugins/check_swap.c
+++ b/plugins/check_swap.c
@@ -48,16 +48,23 @@ long unsigned int crit_size = 0;
 int verbose;
 int allswaps;
 
+#if !defined(sun)
+int sun = 0;    /* defined by compiler if it is a sun solaris system */
+#endif
+
 int
 main (int argc, char **argv)
 {
         int percent_used, percent;
         long unsigned int total_swap = 0, used_swap = 0, free_swap = 0;
         long unsigned int total, used, free;
+        int conv_factor;                /* Convert to MBs */
         int result = STATE_OK;
         char input_buffer[MAX_INPUT_BUFFER];
 #ifdef HAVE_SWAP
         char *temp_buffer;
+        char *swap_command;
+        char *swap_format;
 #endif
 #ifdef HAVE_PROC_MEMINFO
         FILE *fp;
@@ -70,48 +77,40 @@ main (int argc, char **argv)
 
 #ifdef HAVE_PROC_MEMINFO
         fp = fopen (PROC_MEMINFO, "r");
-        asprintf (&status, "%s", "Swap used:");
         while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
                 if (sscanf (input_buffer, " %s %lu %lu %lu", str, &total, &used, &free) == 4 &&
                     strstr (str, "Swap")) {
-                        total_swap += total;
-                        used_swap += used;
-                        free_swap += free;
-                        if (allswaps) {
-                                percent = 100 * (((double) used) / ((double) total));
-                                if (percent >= crit_percent || free <= crit_size)
-                                        result = max_state (STATE_CRITICAL, result);
-                                else if (percent >= warn_percent || free <= warn_size)
-                                        result = max_state (STATE_WARNING, result);
-                                if (verbose)
-                                        asprintf (&status, "%s [%lu/%lu]", status, used, total);
-                        }
-                }
-        }
-        percent_used = 100 * (((double) used_swap) / ((double) total_swap));
-        if (percent_used >= crit_percent || free_swap <= crit_size)
-                result = max_state (STATE_CRITICAL, result);
-        else if (percent_used >= warn_percent || free_swap <= warn_size)
-                result = max_state (STATE_WARNING, result);
-        asprintf (&status, "%s %2d%% (%lu out of %lu)", status, percent_used,
-                  used_swap, total_swap);
-        fclose (fp);
-#else
+#endif
 #ifdef HAVE_SWAP
-        child_process = spopen (SWAP_COMMAND);
+        if (!allswaps && sun) {
+                asprintf(&swap_command, "%s", "/usr/sbin/swap -s");
+                asprintf(&swap_format, "%s", "%*s %*dk %*s %*s + %*dk %*s = %dk %*s %dk %*s");
+                conv_factor = 2048;
+        } else {
+                asprintf(&swap_command, "%s", SWAP_COMMAND);
+                asprintf(&swap_format, "%s", SWAP_FORMAT);
+                conv_factor = SWAP_CONVERSION;
+        }
+
+        if (verbose >= 2)
+                printf ("Command: %s\n", swap_command);
+        if (verbose >= 3)
+                printf ("Format: %s\n", swap_format);
+
+        child_process = spopen (swap_command);
         if (child_process == NULL) {
-                printf ("Could not open pipe: %s\n", SWAP_COMMAND);
+                printf ("Could not open pipe: %s\n", swap_command);
                 return STATE_UNKNOWN;
         }
 
         child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
         if (child_stderr == NULL)
-                printf ("Could not open stderr for %s\n", SWAP_COMMAND);
+                printf ("Could not open stderr for %s\n", swap_command);
 
         sprintf (str, "%s", "");
         /* read 1st line */
         fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process);
-        if (strcmp (SWAP_FORMAT, "") == 0) {
+        if (strcmp (swap_format, "") == 0) {
                 temp_buffer = strtok (input_buffer, " \n");
                 while (temp_buffer) {
                         if (strstr (temp_buffer, "blocks"))
@@ -124,31 +123,42 @@ main (int argc, char **argv)
                 }
         }
 
-        asprintf (&status, "%s", "Swap used:");
-        while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
-                sscanf (input_buffer, SWAP_FORMAT, &total, &free);
-                used = total - free;
-                total_swap += total;
-                used_swap += used;
-                free_swap += free;
-                if (allswaps) {
-                        percent = 100 * (((double) used) / ((double) total));
-                        if (percent >= crit_percent || free <= crit_size)
-                                result = max_state (STATE_CRITICAL, result);
-                        else if (percent >= warn_percent || free <= warn_size)
-                                result = max_state (STATE_WARNING, result);
-                        if (verbose)
-                                asprintf (&status, "%s [%lu/%lu]", status, used, total);
+        if (!allswaps && sun) {
+                sscanf (input_buffer, swap_format, &used_swap, &free_swap);
+                used_swap = used_swap / 1024;
+                free_swap = free_swap / 1024;
+                total_swap = used_swap + free_swap;
+        } else {
+                while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
+                        sscanf (input_buffer, swap_format, &total, &free);
+
+                        total = total / conv_factor;
+                        free = free / conv_factor;
+                        if (verbose >= 3)
+                                printf ("total=%d, free=%d\n", total, free);
+
+                        used = total - free;
+#endif
+                        total_swap += total;
+                        used_swap += used;
+                        free_swap += free;
+                        if (allswaps) {
+                                percent = 100 * (((double) used) / ((double) total));
+                                result = max_state (result, check_swap (percent, free));
+                                if (verbose)
+                                        asprintf (&status, "%s [%lu (%d%%)]", status, free, 100 - percent);
+                        }
                 }
         }
         percent_used = 100 * ((double) used_swap) / ((double) total_swap);
-        if (percent_used >= crit_percent || free_swap <= crit_size)
-                result = max_state (STATE_CRITICAL, result);
-        else if (percent_used >= warn_percent || free_swap <= warn_size)
-                result = max_state (STATE_WARNING, result);
-        asprintf (&status, "%s %2d%% (%lu out of %lu)",
-                                                status, percent_used, used_swap, total_swap);
+        result = max_state (result, check_swap (percent_used, free_swap));
+        asprintf (&status, " %d%% free (%lu MB out of %lu MB)%s",
+                                                (100 - percent_used), free_swap, total_swap, status);
 
+#ifdef HAVE_PROC_MEMINFO
+        fclose(fp);
+#endif
+#ifdef HAVE_SWAP
         /* If we get anything on STDERR, at least set warning */
         while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr))
                 result = max_state (result, STATE_WARNING);
@@ -160,34 +170,29 @@ main (int argc, char **argv)
         if (spclose (child_process))
                 result = max_state (result, STATE_WARNING);
 #endif
-#endif
 
-#ifndef SWAP_COMMAND
-#ifndef SWAP_FILE
-#ifndef HAVE_PROC_MEMINFO
-        return STATE_UNKNOWN;
-#endif
-#endif
-#endif
-
-        if (result == STATE_OK)
-                printf ("Swap ok - %s\n", status);
-        else if (result == STATE_CRITICAL)
-                printf ("CRITICAL - %s\n", status);
-        else if (result == STATE_WARNING)
-                printf ("WARNING - %s\n", status);
-        else if (result == STATE_UNKNOWN)
-                printf ("Unable to read output\n");
-        else {
-                result = STATE_UNKNOWN;
-                printf ("UNKNOWN - %s\n", status);
-        }
-
-        return result;
+        terminate (result, "SWAP %s:%s\n", state_text (result), status);
 }
 
 
 
+
+int
+check_swap (int usp, int free_swap)
+{
+        int result = STATE_UNKNOWN;
+        if (usp >= 0 && usp >= (100.0 - crit_percent))
+                result = STATE_CRITICAL;
+        else if (crit_size >= 0 && free_swap <= crit_size)
+                result = STATE_CRITICAL;
+        else if (usp >= 0 && usp >= (100.0 - warn_percent))
+                result = STATE_WARNING;
+        else if (warn_size >= 0 && free_swap <= warn_size)
+                result = STATE_WARNING;
+        else if (usp >= 0.0)
+                result = STATE_OK;
+        return result;
+}
 
 
 /* process command-line arguments */
@@ -255,11 +260,11 @@ process_arguments (int argc, char **argv)
                                 usage ("Critical threshold must be integer or percentage!\n");
                         }
                         cc++;
-                case 'a':                                                                       /* verbose */
+                case 'a':                                                                       /* all swap */
                         allswaps = TRUE;
                         break;
                 case 'v':                                                                       /* verbose */
-                        verbose = TRUE;
+                        verbose++;
                         break;
                 case 'V':                                                                       /* version */
                         print_revision (progname, "$Revision$");
@@ -307,13 +312,13 @@ validate_arguments (void)
                         && crit_size < 0) {
                 return ERROR;
         }
-        else if (warn_percent > crit_percent) {
+        else if (warn_percent < crit_percent) {
                 usage
-                        ("Warning percentage should not be less than critical percentage\n");
+                        ("Warning percentage should be more than critical percentage\n");
         }
         else if (warn_size < crit_size) {
                 usage
-                        ("Warning free space should not be more than critical free space\n");
+                        ("Warning free space should be more than critical free space\n");
         }
         return OK;
 }
@@ -350,15 +355,21 @@ print_help (void)
                  " -w, --warning=INTEGER\n"
                  "   Exit with WARNING status if less than INTEGER bytes of swap space are free\n"
                  " -w, --warning=PERCENT%%\n"
-                 "   Exit with WARNING status if more than PERCENT of swap space has been used\n"
+                 "   Exit with WARNING status if less than PERCENT of swap space has been used\n"
                  " -c, --critical=INTEGER\n"
                  "   Exit with CRITICAL status if less than INTEGER bytes of swap space are free\n"
                  " -c, --critical=PERCENT%%\n"
-                 "   Exit with CRITCAL status if more than PERCENT of swap space has been used\n"
+                 "   Exit with CRITCAL status if less than PERCENT of swap space has been used\n"
                  " -a, --allswaps\n"
                  "    Conduct comparisons for all swap partitions, one by one\n"
                  " -h, --help\n"
                  "    Print detailed help screen\n"
-                 " -V, --version\n" "    Print version information\n\n");
+                 " -V, --version\n" "    Print version information\n"
+#ifdef sun
+                 "\nOn Solaris, if -a specified, uses swap -l, otherwise uses swap -s.\n"
+                 "Will be discrepencies because swap -s counts allocated swap and includes real memory\n"
+#endif
+                 "\n"
+                 );
         support ();
 }