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-rw-r--r--plugins/check_load.c223
1 files changed, 98 insertions, 125 deletions
diff --git a/plugins/check_load.c b/plugins/check_load.c
index 7e1cc481..9625036d 100644
--- a/plugins/check_load.c
+++ b/plugins/check_load.c
@@ -39,37 +39,64 @@ const char *email = "nagiosplug-devel@lists.sourceforge.net";
#endif /* !defined LOADAVG_1MIN */
-int process_arguments (int argc, char **argv);
-int validate_arguments (void);
+static int process_arguments (int argc, char **argv);
+static int validate_arguments (void);
void print_help (void);
void print_usage (void);
-float wload1 = -1, wload5 = -1, wload15 = -1;
-float cload1 = -1, cload5 = -1, cload15 = -1;
+/* strictly for pretty-print usage in loops */
+static const int nums[3] = { 1, 5, 15 };
+
+/* provide some fairly sane defaults */
+double wload[3] = { 0.0, 0.0, 0.0 };
+double cload[3] = { 0.0, 0.0, 0.0 };
+#define la1 la[0]
+#define la5 la[1]
+#define la15 la[2]
char *status_line;
+static void
+get_threshold(char *arg, double *th)
+{
+ size_t i, n;
+ char *str = arg, *p;
+
+ n = strlen(arg);
+ for(i = 0; i < 3; i++) {
+ th[i] = strtod(str, &p);
+ if(p == str) break;
+
+ str = p + 1;
+ if(n <= (size_t)(str - arg)) break;
+ }
+
+ /* empty argument or non-floatish, so warn about it and die */
+ if(!i) usage (_("Warning threshold must be float or float triplet!\n"));
+
+ if(i != 2) {
+ /* one or more numbers were given, so fill array with last
+ * we got (most likely to NOT produce the least expected result) */
+ for(n = i; n < 3; n++) th[n] = th[i];
+ }
+}
int
main (int argc, char **argv)
{
- int result = STATE_UNKNOWN;
-
-#if HAVE_GETLOADAVG==1
+ int result;
+ int i;
+
double la[3] = { 0.0, 0.0, 0.0 }; /* NetBSD complains about unitialized arrays */
-#else
-# if HAVE_PROC_LOADAVG==1
- FILE *fp;
- char input_buffer[MAX_INPUT_BUFFER];
- char *tmp_ptr;
-# else
+#ifndef HAVE_GETLOADAVG
char input_buffer[MAX_INPUT_BUFFER];
+# ifdef HAVE_PROC_LOADAVG
+ FILE *fp;
+ char *str, *next;
# endif
#endif
- float la1, la5, la15;
-
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
@@ -77,30 +104,24 @@ main (int argc, char **argv)
if (process_arguments (argc, argv) == ERROR)
usage4 (_("Could not parse arguments"));
-#if HAVE_GETLOADAVG==1
+#ifdef HAVE_GETLOADAVG
result = getloadavg (la, 3);
- if (result == -1)
+ if (result != 3)
return STATE_UNKNOWN;
- la1 = la[LOADAVG_1MIN];
- la5 = la[LOADAVG_5MIN];
- la15 = la[LOADAVG_15MIN];
#else
-# if HAVE_PROC_LOADAVG==1
+# ifdef HAVE_PROC_LOADAVG
fp = fopen (PROC_LOADAVG, "r");
if (fp == NULL) {
printf (_("Error opening %s\n"), PROC_LOADAVG);
return STATE_UNKNOWN;
}
- la1 = la5 = la15 = -1;
-
while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
- tmp_ptr = strtok (input_buffer, " ");
- la1 = atof (tmp_ptr);
- tmp_ptr = strtok (NULL, " ");
- la5 = atof (tmp_ptr);
- tmp_ptr = strtok (NULL, " ");
- la15 = atof (tmp_ptr);
+ str = (char *)input_buffer;
+ for(i = 0; i < 3; i++) {
+ la[i] = strtod(str, &next);
+ str = next;
+ }
}
fclose (fp);
@@ -125,12 +146,11 @@ main (int argc, char **argv)
# endif
#endif
-
- if ((la1 < 0.0) || (la5 < 0.0) || (la15 < 0.0)) {
-#if HAVE_GETLOADAVG==1
+ if ((la[0] < 0.0) || (la[1] < 0.0) || (la[2] < 0.0)) {
+#ifdef HAVE_GETLOADAVG
printf (_("Error in getloadavg()\n"));
#else
-# if HAVE_PROC_LOADAVG==1
+# ifdef HAVE_PROC_LOADAVG
printf (_("Error processing %s\n"), PROC_LOADAVG);
# else
printf (_("Error processing %s\n"), PATH_TO_UPTIME);
@@ -139,29 +159,30 @@ main (int argc, char **argv)
return STATE_UNKNOWN;
}
+ /* we got this far, so assume OK until we've measured */
+ result = STATE_OK;
+
asprintf(&status_line, _("load average: %.2f, %.2f, %.2f"), la1, la5, la15);
- if ((la1 >= cload1) || (la5 >= cload5) || (la15 >= cload15))
- result = STATE_CRITICAL;
- else if ((la1 >= wload1) || (la5 >= wload5) || (la15 >= wload15))
- result = STATE_WARNING;
- else
- result = STATE_OK;
-
- die (result,
- "%s - %s|%s %s %s\n",
- state_text (result),
- status_line,
- fperfdata ("load1", la1, "", (int)wload1, wload1, (int)cload1, cload1, TRUE, 0, FALSE, 0),
- fperfdata ("load5", la5, "", (int)wload5, wload5, (int)cload5, cload5, TRUE, 0, FALSE, 0),
- fperfdata ("load15", la15, "", (int)wload15, wload15, (int)cload15, cload15, TRUE, 0, FALSE, 0));
- return STATE_OK;
-}
+ for(i = 0; i < 3; i++) {
+ if(la[i] > cload[i]) {
+ result = STATE_CRITICAL;
+ break;
+ }
+ else if(la[i] > wload[i]) result = STATE_WARNING;
+ }
+
+ printf("%s - %s|", state_text(result), status_line);
+ for(i = 0; i < 3; i++)
+ printf("load%d=%.3f;%.3f;%.3f;0; ", nums[i], la[i], wload[i], cload[i]);
+ putchar('\n');
+ return result;
+}
/* process command-line arguments */
-int
+static int
process_arguments (int argc, char **argv)
{
int c = 0;
@@ -185,37 +206,11 @@ process_arguments (int argc, char **argv)
break;
switch (c) {
- case 'w': /* warning time threshold */
- if (is_intnonneg (optarg)) {
- wload1 = atof (optarg);
- wload5 = atof (optarg);
- wload15 = atof (optarg);
- break;
- }
- else if (strstr (optarg, ",") &&
- sscanf (optarg, "%f,%f,%f", &wload1, &wload5, &wload15) == 3)
- break;
- else if (strstr (optarg, ":") &&
- sscanf (optarg, "%f:%f:%f", &wload1, &wload5, &wload15) == 3)
- break;
- else
- usage (_("Warning threshold must be float or float triplet!\n"));
+ case 'w': /* warning time threshold */
+ get_threshold(optarg, wload);
break;
- case 'c': /* critical time threshold */
- if (is_intnonneg (optarg)) {
- cload1 = atof (optarg);
- cload5 = atof (optarg);
- cload15 = atof (optarg);
- break;
- }
- else if (strstr (optarg, ",") &&
- sscanf (optarg, "%f,%f,%f", &cload1, &cload5, &cload15) == 3)
- break;
- else if (strstr (optarg, ":") &&
- sscanf (optarg, "%f:%f:%f", &cload1, &cload5, &cload15) == 3)
- break;
- else
- usage (_("Critical threshold must be float or float triplet!\n"));
+ case 'c': /* critical time threshold */
+ get_threshold(optarg, cload);
break;
case 'V': /* version */
print_revision (progname, revision);
@@ -231,60 +226,38 @@ process_arguments (int argc, char **argv)
c = optind;
if (c == argc)
return validate_arguments ();
- if (wload1 < 0 && is_nonnegative (argv[c]))
- wload1 = atof (argv[c++]);
-
- if (c == argc)
- return validate_arguments ();
- if (cload1 < 0 && is_nonnegative (argv[c]))
- cload1 = atof (argv[c++]);
-
- if (c == argc)
- return validate_arguments ();
- if (wload5 < 0 && is_nonnegative (argv[c]))
- wload5 = atof (argv[c++]);
- if (c == argc)
- return validate_arguments ();
- if (cload5 < 0 && is_nonnegative (argv[c]))
- cload5 = atof (argv[c++]);
-
- if (c == argc)
- return validate_arguments ();
- if (wload15 < 0 && is_nonnegative (argv[c]))
- wload15 = atof (argv[c++]);
-
- if (c == argc)
- return validate_arguments ();
- if (cload15 < 0 && is_nonnegative (argv[c]))
- cload15 = atof (argv[c++]);
+ /* handle the case if both arguments are missing,
+ * but not if only one is given without -c or -w flag */
+ if(c - argc == 2) {
+ get_threshold(argv[c++], wload);
+ get_threshold(argv[c++], cload);
+ }
+ else if(c - argc == 1) {
+ get_threshold(argv[c++], cload);
+ }
return validate_arguments ();
}
-int
+static int
validate_arguments (void)
{
- if (wload1 < 0)
- usage (_("Warning threshold for 1-minute load average is not specified\n"));
- if (wload5 < 0)
- usage (_("Warning threshold for 5-minute load average is not specified\n"));
- if (wload15 < 0)
- usage (_("Warning threshold for 15-minute load average is not specified\n"));
- if (cload1 < 0)
- usage (_("Critical threshold for 1-minute load average is not specified\n"));
- if (cload5 < 0)
- usage (_("Critical threshold for 5-minute load average is not specified\n"));
- if (cload15 < 0)
- usage (_("Critical threshold for 15-minute load average is not specified\n"));
- if (wload1 > cload1)
- usage (_("Parameter inconsistency: 1-minute \"warning load\" greater than \"critical load\".\n"));
- if (wload5 > cload5)
- usage (_("Parameter inconsistency: 5-minute \"warning load\" greater than \"critical load\".\n"));
- if (wload15 > cload15)
- usage (_("Parameter inconsistency: 15-minute \"warning load\" greater than \"critical load\".\n"));
+ int i = 0;
+
+ /* match cload first, as it will give the most friendly error message
+ * if user hasn't given the -c switch properly */
+ for(i = 0; i < 3; i++) {
+ if(cload[i] < 0)
+ die (STATE_UNKNOWN, _("Critical threshold for %d-minute load average is not specified\n"), nums[i]);
+ if(wload[i] < 0)
+ die (STATE_UNKNOWN, _("Warning threshold for %d-minute load average is not specified\n"), nums[i]);
+ if(wload[i] > cload[i])
+ die (STATE_UNKNOWN, _("Parameter inconsistency: %d-minute \"warning load\" is greater than \"critical load\"\n"), nums[i]);
+ }
+
return OK;
}
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