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check_swap: Return byte number (in linux) and simplify code after that

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This commit is contained in:
RincewindsHat 2023-12-13 17:13:23 +01:00
parent 3a10773c09
commit 22a423ad5d
1 changed files with 40 additions and 32 deletions
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72
plugins/check_swap.c
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@ -156,19 +156,28 @@ int main (int argc, char **argv) {
uint64_t warn_print = config.warn.value;
if (config.warn.is_percentage) {
warn_print = config.warn.value * (data.metrics.total*1024 *1024/100);
warn_print =
config.warn.value * (data.metrics.total / 100);
}
uint64_t crit_print = config.crit.value;
if (config.crit.is_percentage) {
crit_print = config.crit.value * (data.metrics.total*1024 *1024/100);
crit_print =
config.crit.value * (data.metrics.total / 100);
}
char *perfdata = perfdata_uint64 ("swap", data.metrics.free *1024 *1024, "B",
true, warn_print,
true, crit_print,
true, 0,
true, (long) data.metrics.total* 1024 * 1024);
char *perfdata = perfdata_uint64(
"swap",
data.metrics.free,
"B",
true, warn_print,
true, crit_print,
true, 0,
true, (long)data.metrics.total);
if (config.verbose > 1) {
printf("Warn threshold value: %"PRIu64"\n", config.warn.value);
}
if ((config.warn.is_percentage && (percent_used >= (100 - config.warn.value))) ||
config.warn.value >= data.metrics.free) {
@ -188,7 +197,6 @@ int main (int argc, char **argv) {
exit(data.statusCode);
}
/* process command-line arguments */
swap_config_wrapper process_arguments (swap_config_wrapper conf_wrapper, int argc, char **argv) {
if (argc < 2) {
@ -377,7 +385,7 @@ swap_result getSwapFromProcMeminfo(swap_config config) {
swap_result result = { 0 };
result.statusCode = STATE_OK;
uint64_t dsktotal_mb = 0, dskused_mb = 0, dskfree_mb = 0;
uint64_t swap_total = 0, swap_used = 0, swap_free = 0;
char input_buffer[MAX_INPUT_BUFFER];
char str[32];
@ -390,41 +398,41 @@ swap_result getSwapFromProcMeminfo(swap_config config) {
* On which kind of system this format exists, I can not say, but I wanted to
* document this for people who are not adapt with sscanf anymore, like me
*/
if (sscanf (input_buffer, "%*[S]%*[w]%*[a]%*[p]%*[:] %lu %lu %lu", &dsktotal_mb, &dskused_mb, &dskfree_mb) == 3) {
dsktotal_mb = dsktotal_mb / (1024 * 1024); /* Apply conversion */
dskused_mb = dskused_mb / (1024 * 1024);
dskfree_mb = dskfree_mb / (1024 * 1024);
if (sscanf(input_buffer, "%*[S]%*[w]%*[a]%*[p]%*[:] %lu %lu %lu",
&swap_total, &swap_used, &swap_free) == 3) {
result.metrics.total += dsktotal_mb;
result.metrics.used+= dskused_mb;
result.metrics.free += dskfree_mb;
result.metrics.total += swap_total;
result.metrics.used += swap_used;
result.metrics.free += swap_free;
/*
* The following sscanf call looks for lines looking like: "SwapTotal: 123" and "SwapFree: 123"
* This format exists at least on Debian Linux with a 5.* kernel
*/
} else if (sscanf (input_buffer, "%*[S]%*[w]%*[a]%*[p]%[TotalFreCchd]%*[:] %lu %*[k]%*[B]", str, &tmp_KB)) {
/*
* The following sscanf call looks for lines looking like:
* "SwapTotal: 123" and "SwapFree: 123" This format exists at least
* on Debian Linux with a 5.* kernel
*/
} else if (sscanf(input_buffer,
"%*[S]%*[w]%*[a]%*[p]%[TotalFreCchd]%*[:] %lu "
"%*[k]%*[B]",
str, &tmp_KB)) {
if (config.verbose >= 3) {
printf("Got %s with %lu\n", str, tmp_KB);
}
/* I think this part is always in Kb, so convert to mb */
if (strcmp ("Total", str) == 0) {
dsktotal_mb = tmp_KB / 1024;
} else if (strcmp ("Free", str) == 0) {
dskfree_mb = dskfree_mb + tmp_KB / 1024;
} else if (strcmp ("Cached", str) == 0) {
dskfree_mb = dskfree_mb + tmp_KB / 1024;
if (strcmp("Total", str) == 0) {
swap_total = tmp_KB * 1024;
} else if (strcmp("Free", str) == 0) {
swap_free = swap_free + tmp_KB * 1024;
} else if (strcmp("Cached", str) == 0) {
swap_free = swap_free + tmp_KB * 1024;
}
}
}
fclose(fp);
result.metrics.total = dsktotal_mb;
result.metrics.used = dsktotal_mb - dskfree_mb;
result.metrics.free = dskfree_mb;
result.metrics.total = swap_total;
result.metrics.used = swap_total - swap_free;
result.metrics.free = swap_free;
return result;
}