Imported Upstream version 1.4.5
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62d1e7d5fe
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412 changed files with 168642 additions and 0 deletions
536
plugins/check_swap.c
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536
plugins/check_swap.c
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/******************************************************************************
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*
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* Nagios check_disk plugin
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*
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* License: GPL
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* Copyright (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
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* Copyright (c) 2000-2006 nagios-plugins team
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*
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* Last Modified: $Date: 2006/10/19 23:53:28 $
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*
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* Description:
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*
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* This file contains the check_disk plugin
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*
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* License Information:
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id: check_swap.c,v 1.56 2006/10/19 23:53:28 opensides Exp $
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*
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*****************************************************************************/
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const char *progname = "check_swap";
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const char *revision = "$Revision: 1.56 $";
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const char *copyright = "2000-2006";
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const char *email = "nagiosplug-devel@lists.sourceforge.net";
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#include "common.h"
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#include "popen.h"
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#include "utils.h"
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int check_swap (int usp, float free_swap_mb);
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int process_arguments (int argc, char **argv);
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int validate_arguments (void);
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void print_usage (void);
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void print_help (void);
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int warn_percent = 0;
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int crit_percent = 0;
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float warn_size_bytes = 0;
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float crit_size_bytes= 0;
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int verbose;
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int allswaps;
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int
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main (int argc, char **argv)
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{
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int percent_used, percent;
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float total_swap_mb = 0, used_swap_mb = 0, free_swap_mb = 0;
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float dsktotal_mb = 0, dskused_mb = 0, dskfree_mb = 0, tmp_mb = 0;
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int result = STATE_UNKNOWN;
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char input_buffer[MAX_INPUT_BUFFER];
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#ifdef HAVE_PROC_MEMINFO
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FILE *fp;
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#else
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int conv_factor = SWAP_CONVERSION;
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# ifdef HAVE_SWAP
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char *temp_buffer;
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char *swap_command;
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char *swap_format;
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# else
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# ifdef HAVE_DECL_SWAPCTL
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int i=0, nswaps=0, swapctl_res=0;
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# ifdef CHECK_SWAP_SWAPCTL_SVR4
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swaptbl_t *tbl=NULL;
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swapent_t *ent=NULL;
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# else
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# ifdef CHECK_SWAP_SWAPCTL_BSD
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struct swapent *ent;
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# endif /* CHECK_SWAP_SWAPCTL_BSD */
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# endif /* CHECK_SWAP_SWAPCTL_SVR4 */
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# endif /* HAVE_DECL_SWAPCTL */
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# endif
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#endif
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char str[32];
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char *status;
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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status = strdup ("");
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if (process_arguments (argc, argv) == ERROR)
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usage4 (_("Could not parse arguments"));
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#ifdef HAVE_PROC_MEMINFO
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if (verbose >= 3) {
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printf("Reading PROC_MEMINFO at %s\n", PROC_MEMINFO);
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}
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fp = fopen (PROC_MEMINFO, "r");
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while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
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if (sscanf (input_buffer, "%*[S]%*[w]%*[a]%*[p]%*[:] %f %f %f", &dsktotal_mb, &dskused_mb, &dskfree_mb) == 3) {
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dsktotal_mb = dsktotal_mb / 1048576; /* Apply conversion */
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dskused_mb = dskused_mb / 1048576;
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dskfree_mb = dskfree_mb / 1048576;
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total_swap_mb += dsktotal_mb;
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used_swap_mb += dskused_mb;
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free_swap_mb += dskfree_mb;
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if (allswaps) {
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if (dsktotal_mb == 0)
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percent=100.0;
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else
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percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
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result = max_state (result, check_swap (percent, dskfree_mb));
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if (verbose)
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asprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
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}
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}
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else if (sscanf (input_buffer, "%*[S]%*[w]%*[a]%*[p]%[TotalFre]%*[:] %f %*[k]%*[B]", str, &tmp_mb)) {
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if (verbose >= 3) {
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printf("Got %s with %f\n", str, tmp_mb);
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}
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/* I think this part is always in Kb, so convert to mb */
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if (strcmp ("Total", str) == 0) {
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dsktotal_mb = tmp_mb / 1024;
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}
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else if (strcmp ("Free", str) == 0) {
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dskfree_mb = tmp_mb / 1024;
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}
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}
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}
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fclose(fp);
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dskused_mb = dsktotal_mb - dskfree_mb;
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total_swap_mb = dsktotal_mb;
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used_swap_mb = dskused_mb;
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free_swap_mb = dskfree_mb;
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#else
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# ifdef HAVE_SWAP
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asprintf(&swap_command, "%s", SWAP_COMMAND);
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asprintf(&swap_format, "%s", SWAP_FORMAT);
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/* These override the command used if a summary (and thus ! allswaps) is required */
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/* The summary flag returns more accurate information about swap usage on these OSes */
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# ifdef _AIX
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if (!allswaps) {
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asprintf(&swap_command, "%s", "/usr/sbin/lsps -s");
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asprintf(&swap_format, "%s", "%f%*s %f");
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conv_factor = 1;
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}
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# endif
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if (verbose >= 2)
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printf (_("Command: %s\n"), swap_command);
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if (verbose >= 3)
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printf (_("Format: %s\n"), swap_format);
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child_process = spopen (swap_command);
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if (child_process == NULL) {
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printf (_("Could not open pipe: %s\n"), swap_command);
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return STATE_UNKNOWN;
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}
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child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
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if (child_stderr == NULL)
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printf (_("Could not open stderr for %s\n"), swap_command);
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sprintf (str, "%s", "");
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/* read 1st line */
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fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process);
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if (strcmp (swap_format, "") == 0) {
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temp_buffer = strtok (input_buffer, " \n");
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while (temp_buffer) {
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if (strstr (temp_buffer, "blocks"))
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sprintf (str, "%s %s", str, "%f");
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else if (strstr (temp_buffer, "dskfree"))
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sprintf (str, "%s %s", str, "%f");
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else
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sprintf (str, "%s %s", str, "%*s");
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temp_buffer = strtok (NULL, " \n");
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}
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}
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/* If different swap command is used for summary switch, need to read format differently */
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# ifdef _AIX
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if (!allswaps) {
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fgets(input_buffer, MAX_INPUT_BUFFER - 1, child_process); /* Ignore first line */
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sscanf (input_buffer, swap_format, &total_swap_mb, &used_swap_mb);
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free_swap_mb = total_swap_mb * (100 - used_swap_mb) /100;
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used_swap_mb = total_swap_mb - free_swap_mb;
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if (verbose >= 3)
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printf (_("total=%.0f, used=%.0f, free=%.0f\n"), total_swap_mb, used_swap_mb, free_swap_mb);
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} else {
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# endif
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while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
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sscanf (input_buffer, swap_format, &dsktotal_mb, &dskfree_mb);
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dsktotal_mb = dsktotal_mb / conv_factor;
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/* AIX lists percent used, so this converts to dskfree in MBs */
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# ifdef _AIX
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dskfree_mb = dsktotal_mb * (100 - dskfree_mb) / 100;
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# else
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dskfree_mb = dskfree_mb / conv_factor;
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# endif
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if (verbose >= 3)
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printf (_("total=%.0f, free=%.0f\n"), dsktotal_mb, dskfree_mb);
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dskused_mb = dsktotal_mb - dskfree_mb;
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total_swap_mb += dsktotal_mb;
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used_swap_mb += dskused_mb;
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free_swap_mb += dskfree_mb;
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if (allswaps) {
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percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
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result = max_state (result, check_swap (percent, dskfree_mb));
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if (verbose)
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asprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
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}
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}
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# ifdef _AIX
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}
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# endif
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/* If we get anything on STDERR, at least set warning */
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while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr))
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result = max_state (result, STATE_WARNING);
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/* close stderr */
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(void) fclose (child_stderr);
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/* close the pipe */
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if (spclose (child_process))
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result = max_state (result, STATE_WARNING);
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# else
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# ifdef CHECK_SWAP_SWAPCTL_SVR4
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/* get the number of active swap devices */
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nswaps=swapctl(SC_GETNSWP, NULL);
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/* initialize swap table + entries */
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tbl=(swaptbl_t*)malloc(sizeof(swaptbl_t)+(sizeof(swapent_t)*nswaps));
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memset(tbl, 0, sizeof(swaptbl_t)+(sizeof(swapent_t)*nswaps));
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tbl->swt_n=nswaps;
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for(i=0;i<nswaps;i++){
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ent=&tbl->swt_ent[i];
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ent->ste_path=(char*)malloc(sizeof(char)*MAXPATHLEN);
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}
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/* and now, tally 'em up */
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swapctl_res=swapctl(SC_LIST, tbl);
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if(swapctl_res < 0){
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perror(_("swapctl failed: "));
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result = STATE_WARNING;
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}
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for(i=0;i<nswaps;i++){
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dsktotal_mb = (float) tbl->swt_ent[i].ste_pages / SWAP_CONVERSION;
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dskfree_mb = (float) tbl->swt_ent[i].ste_free / SWAP_CONVERSION;
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dskused_mb = ( dsktotal_mb - dskfree_mb );
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if (verbose >= 3)
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printf ("dsktotal_mb=%.0f dskfree_mb=%.0f dskused_mb=%.0f\n", dsktotal_mb, dskfree_mb, dskused_mb);
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if(allswaps && dsktotal_mb > 0){
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percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
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result = max_state (result, check_swap (percent, dskfree_mb));
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if (verbose) {
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asprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
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}
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}
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total_swap_mb += dsktotal_mb;
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free_swap_mb += dskfree_mb;
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used_swap_mb += dskused_mb;
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}
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/* and clean up after ourselves */
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for(i=0;i<nswaps;i++){
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free(tbl->swt_ent[i].ste_path);
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}
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free(tbl);
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# else
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# ifdef CHECK_SWAP_SWAPCTL_BSD
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/* get the number of active swap devices */
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nswaps=swapctl(SWAP_NSWAP, NULL, 0);
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/* initialize swap table + entries */
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ent=(struct swapent*)malloc(sizeof(struct swapent)*nswaps);
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/* and now, tally 'em up */
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swapctl_res=swapctl(SWAP_STATS, ent, nswaps);
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if(swapctl_res < 0){
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perror(_("swapctl failed: "));
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result = STATE_WARNING;
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}
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for(i=0;i<nswaps;i++){
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dsktotal_mb = (float) ent[i].se_nblks / conv_factor;
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dskused_mb = (float) ent[i].se_inuse / conv_factor;
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dskfree_mb = ( dsktotal_mb - dskused_mb );
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if(allswaps && dsktotal_mb > 0){
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percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
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result = max_state (result, check_swap (percent, dskfree_mb));
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if (verbose) {
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asprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
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}
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}
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total_swap_mb += dsktotal_mb;
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free_swap_mb += dskfree_mb;
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used_swap_mb += dskused_mb;
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}
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/* and clean up after ourselves */
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free(ent);
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# endif /* CHECK_SWAP_SWAPCTL_BSD */
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# endif /* CHECK_SWAP_SWAPCTL_SVR4 */
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# endif /* HAVE_SWAP */
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#endif /* HAVE_PROC_MEMINFO */
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/* if total_swap_mb == 0, let's not divide by 0 */
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if(total_swap_mb) {
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percent_used = 100 * ((double) used_swap_mb) / ((double) total_swap_mb);
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} else {
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percent_used = 0;
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}
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result = max_state (result, check_swap (percent_used, free_swap_mb));
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printf (_("SWAP %s - %d%% free (%d MB out of %d MB) %s|"),
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state_text (result),
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(100 - percent_used), (int) free_swap_mb, (int) total_swap_mb, status);
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puts (perfdata ("swap", (long) free_swap_mb, "MB",
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TRUE, (long) max (warn_size_bytes/(1024 * 1024), warn_percent/100.0*total_swap_mb),
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TRUE, (long) max (crit_size_bytes/(1024 * 1024), crit_percent/100.0*total_swap_mb),
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TRUE, 0,
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TRUE, (long) total_swap_mb));
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return result;
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}
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int
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check_swap (int usp, float free_swap_mb)
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{
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int result = STATE_UNKNOWN;
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float free_swap = free_swap_mb * (1024 * 1024); /* Convert back to bytes as warn and crit specified in bytes */
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if (usp >= 0 && crit_percent != 0 && usp >= (100.0 - crit_percent))
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result = STATE_CRITICAL;
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else if (crit_size_bytes > 0 && free_swap <= crit_size_bytes)
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result = STATE_CRITICAL;
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else if (usp >= 0 && warn_percent != 0 && usp >= (100.0 - warn_percent))
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result = STATE_WARNING;
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else if (warn_size_bytes > 0 && free_swap <= warn_size_bytes)
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result = STATE_WARNING;
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else if (usp >= 0.0)
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result = STATE_OK;
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return result;
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}
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/* process command-line arguments */
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int
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process_arguments (int argc, char **argv)
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{
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int c = 0; /* option character */
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int option = 0;
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static struct option longopts[] = {
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{"warning", required_argument, 0, 'w'},
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{"critical", required_argument, 0, 'c'},
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{"allswaps", no_argument, 0, 'a'},
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{"verbose", no_argument, 0, 'v'},
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{"version", no_argument, 0, 'V'},
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{"help", no_argument, 0, 'h'},
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{0, 0, 0, 0}
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};
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if (argc < 2)
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return ERROR;
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while (1) {
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c = getopt_long (argc, argv, "+?Vvhac:w:", longopts, &option);
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if (c == -1 || c == EOF)
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break;
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switch (c) {
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case 'w': /* warning size threshold */
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if (is_intnonneg (optarg)) {
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warn_size_bytes = (float) atoi (optarg);
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break;
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}
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else if (strstr (optarg, ",") &&
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strstr (optarg, "%") &&
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sscanf (optarg, "%f,%d%%", &warn_size_bytes, &warn_percent) == 2) {
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warn_size_bytes = floorf(warn_size_bytes);
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break;
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}
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else if (strstr (optarg, "%") &&
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sscanf (optarg, "%d%%", &warn_percent) == 1) {
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break;
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}
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else {
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usage4 (_("Warning threshold must be integer or percentage!"));
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}
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case 'c': /* critical size threshold */
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if (is_intnonneg (optarg)) {
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crit_size_bytes = (float) atoi (optarg);
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break;
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}
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else if (strstr (optarg, ",") &&
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strstr (optarg, "%") &&
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sscanf (optarg, "%f,%d%%", &crit_size_bytes, &crit_percent) == 2) {
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crit_size_bytes = floorf(crit_size_bytes);
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break;
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}
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else if (strstr (optarg, "%") &&
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sscanf (optarg, "%d%%", &crit_percent) == 1) {
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break;
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}
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else {
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usage4 (_("Critical threshold must be integer or percentage!"));
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}
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case 'a': /* all swap */
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allswaps = TRUE;
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break;
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case 'v': /* verbose */
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verbose++;
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break;
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case 'V': /* version */
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print_revision (progname, revision);
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exit (STATE_OK);
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||||
case 'h': /* help */
|
||||
print_help ();
|
||||
exit (STATE_OK);
|
||||
case '?': /* error */
|
||||
usage2 (_("Unknown argument"), optarg);
|
||||
}
|
||||
}
|
||||
|
||||
c = optind;
|
||||
if (c == argc)
|
||||
return validate_arguments ();
|
||||
if (warn_percent == 0 && is_intnonneg (argv[c]))
|
||||
warn_percent = atoi (argv[c++]);
|
||||
|
||||
if (c == argc)
|
||||
return validate_arguments ();
|
||||
if (crit_percent == 0 && is_intnonneg (argv[c]))
|
||||
crit_percent = atoi (argv[c++]);
|
||||
|
||||
if (c == argc)
|
||||
return validate_arguments ();
|
||||
if (warn_size_bytes == 0 && is_intnonneg (argv[c]))
|
||||
warn_size_bytes = (float) atoi (argv[c++]);
|
||||
|
||||
if (c == argc)
|
||||
return validate_arguments ();
|
||||
if (crit_size_bytes == 0 && is_intnonneg (argv[c]))
|
||||
crit_size_bytes = (float) atoi (argv[c++]);
|
||||
|
||||
return validate_arguments ();
|
||||
}
|
||||
|
||||
|
||||
|
||||
int
|
||||
validate_arguments (void)
|
||||
{
|
||||
if (warn_percent == 0 && crit_percent == 0 && warn_size_bytes == 0
|
||||
&& crit_size_bytes == 0) {
|
||||
return ERROR;
|
||||
}
|
||||
else if (warn_percent < crit_percent) {
|
||||
usage4
|
||||
(_("Warning percentage should be more than critical percentage"));
|
||||
}
|
||||
else if (warn_size_bytes < crit_size_bytes) {
|
||||
usage4
|
||||
(_("Warning free space should be more than critical free space"));
|
||||
}
|
||||
return OK;
|
||||
}
|
||||
|
||||
|
||||
|
||||
void
|
||||
print_help (void)
|
||||
{
|
||||
print_revision (progname, revision);
|
||||
|
||||
printf (_(COPYRIGHT), copyright, email);
|
||||
|
||||
printf ("%s\n", _("Check swap space on local machine."));
|
||||
|
||||
printf ("\n\n");
|
||||
|
||||
print_usage ();
|
||||
|
||||
printf (_(UT_HELP_VRSN));
|
||||
|
||||
printf (" %s\n", "-w, --warning=INTEGER");
|
||||
printf (" %s\n", _("Exit with WARNING status if less than INTEGER bytes of swap space are free"));
|
||||
printf (" %s\n", "-w, --warning=PERCENT%%");
|
||||
printf (" %s\n", _("Exit with WARNING status if less than PERCENT of swap space is free"));
|
||||
printf (" %s\n", "-c, --critical=INTEGER");
|
||||
printf (" %s\n", _("Exit with CRITICAL status if less than INTEGER bytes of swap space are free"));
|
||||
printf (" %s\n", "-c, --critical=PERCENT%%");
|
||||
printf (" %s\n", _("Exit with CRITCAL status if less than PERCENT of swap space is free"));
|
||||
printf (" %s\n", "-a, --allswaps");
|
||||
printf (" %s\n", _("Conduct comparisons for all swap partitions, one by one"));
|
||||
printf (" %s\n", "-v, --verbose");
|
||||
printf (" %s\n", _("Verbose output. Up to 3 levels"));
|
||||
printf ("\n");
|
||||
printf ("%s\n", _("Notes:"));
|
||||
printf (" %s\n", _("On AIX, if -a is specified, uses lsps -a, otherwise uses lsps -s.\n"));
|
||||
|
||||
printf (_(UT_SUPPORT));
|
||||
}
|
||||
|
||||
|
||||
|
||||
void
|
||||
print_usage (void)
|
||||
{
|
||||
printf (_("Usage:"));
|
||||
printf ("%s [-av] -w <percent_free>%% -c <percent_free>%%\n",progname);
|
||||
printf ("%s [-av] -w <bytes_free> -c <bytes_free>\n", progname);
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue