![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/plugins/check_swap.c b/plugins/check_swap.c
index 4e17163cd1e6c061cb48fc62a0da2635a1d68b8d..a1356cfac3e5030971cc54b63af43ffadb6aeca5 100644 (file)
--- a/plugins/check_swap.c
+++ b/plugins/check_swap.c
-/******************************************************************************
- *
- * Program: Swap space plugin for Nagios
- * License: GPL
- *
- * License Information:
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Copyright (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
- *
- * $Id$
- *
- *****************************************************************************/
+/*****************************************************************************
+*
+* Nagios check_disk plugin
+*
+* License: GPL
+* Copyright (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
+* Copyright (c) 2000-2007 Nagios Plugins Development Team
+*
+* Description:
+*
+* This file contains the check_disk plugin
+*
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program. If not, see <http://www.gnu.org/licenses/>.
+*
+*
+*****************************************************************************/
const char *progname = "check_swap";
-const char *revision = "$Revision$";
-const char *copyright = "2000-2004";
+const char *copyright = "2000-2007";
const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
#include "popen.h"
#include "utils.h"
-int check_swap (int usp, long unsigned int free_swap);
+#ifdef HAVE_DECL_SWAPCTL
+# ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+# endif
+# ifdef HAVE_SYS_SWAP_H
+# include <sys/swap.h>
+# endif
+# ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+# endif
+#endif
+
+#ifndef SWAP_CONVERSION
+# define SWAP_CONVERSION 1
+#endif
+
+int check_swap (int usp, float free_swap_mb);
int process_arguments (int argc, char **argv);
int validate_arguments (void);
void print_usage (void);
int warn_percent = 0;
int crit_percent = 0;
-unsigned long long warn_size = 0;
-unsigned long long crit_size = 0;
+float warn_size_bytes = 0;
+float crit_size_bytes= 0;
int verbose;
int allswaps;
main (int argc, char **argv)
{
int percent_used, percent;
- unsigned long long total_swap = 0, used_swap = 0, free_swap = 0;
- unsigned long long dsktotal = 0, dskused = 0, dskfree = 0, tmp = 0;
+ float total_swap_mb = 0, used_swap_mb = 0, free_swap_mb = 0;
+ float dsktotal_mb = 0, dskused_mb = 0, dskfree_mb = 0, tmp_mb = 0;
int result = STATE_UNKNOWN;
char input_buffer[MAX_INPUT_BUFFER];
- char *perf;
- int conv_factor = SWAP_CONVERSION;
#ifdef HAVE_PROC_MEMINFO
FILE *fp;
#else
+ int conv_factor = SWAP_CONVERSION;
# ifdef HAVE_SWAP
char *temp_buffer;
char *swap_command;
# endif
#endif
char str[32];
- char *status, *tmp_status;
+ char *status;
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
status = strdup ("");
- tmp_status = strdup ("");
- perf = strdup ("");
+
+ /* Parse extra opts if any */
+ argv=np_extra_opts (&argc, argv, progname);
if (process_arguments (argc, argv) == ERROR)
usage4 (_("Could not parse arguments"));
#ifdef HAVE_PROC_MEMINFO
+ if (verbose >= 3) {
+ printf("Reading PROC_MEMINFO at %s\n", PROC_MEMINFO);
+ }
fp = fopen (PROC_MEMINFO, "r");
while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp)) {
- if (sscanf (input_buffer, "%*[S]%*[w]%*[a]%*[p]%*[:] %llu %llu %llu", &dsktotal, &dskused, &dskfree) == 3) {
- dsktotal = dsktotal / 1048576;
- dskused = dskused / 1048576;
- dskfree = dskfree / 1048576;
- total_swap += dsktotal;
- used_swap += dskused;
- free_swap += dskfree;
+ if (sscanf (input_buffer, "%*[S]%*[w]%*[a]%*[p]%*[:] %f %f %f", &dsktotal_mb, &dskused_mb, &dskfree_mb) == 3) {
+ dsktotal_mb = dsktotal_mb / 1048576; /* Apply conversion */
+ dskused_mb = dskused_mb / 1048576;
+ dskfree_mb = dskfree_mb / 1048576;
+ total_swap_mb += dsktotal_mb;
+ used_swap_mb += dskused_mb;
+ free_swap_mb += dskfree_mb;
if (allswaps) {
- if (dsktotal == 0)
+ if (dsktotal_mb == 0)
percent=100.0;
else
- percent = 100 * (((double) dskused) / ((double) dsktotal));
- result = max_state (result, check_swap (percent, dskfree));
+ percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
+ result = max_state (result, check_swap (percent, dskfree_mb));
if (verbose)
- asprintf (&status, "%s [%llu (%d%%)]", status, dskfree, 100 - percent);
+ asprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
}
}
- else if (sscanf (input_buffer, "%*[S]%*[w]%*[a]%*[p]%[TotalFre]%*[:] %llu %*[k]%*[B]", str, &tmp)) {
+ else if (sscanf (input_buffer, "%*[S]%*[w]%*[a]%*[p]%[TotalFre]%*[:] %f %*[k]%*[B]", str, &tmp_mb)) {
+ if (verbose >= 3) {
+ printf("Got %s with %f\n", str, tmp_mb);
+ }
+ /* I think this part is always in Kb, so convert to mb */
if (strcmp ("Total", str) == 0) {
- dsktotal = tmp / 1024;
+ dsktotal_mb = tmp_mb / 1024;
}
else if (strcmp ("Free", str) == 0) {
- dskfree = tmp / 1024;
+ dskfree_mb = tmp_mb / 1024;
}
}
}
fclose(fp);
- dskused = dsktotal - dskfree;
- total_swap = dsktotal;
- used_swap = dskused;
- free_swap = dskfree;
+ dskused_mb = dsktotal_mb - dskfree_mb;
+ total_swap_mb = dsktotal_mb;
+ used_swap_mb = dskused_mb;
+ free_swap_mb = dskfree_mb;
#else
# ifdef HAVE_SWAP
asprintf(&swap_command, "%s", SWAP_COMMAND);
# ifdef _AIX
if (!allswaps) {
asprintf(&swap_command, "%s", "/usr/sbin/lsps -s");
- asprintf(&swap_format, "%s", "%d%*s %d");
+ asprintf(&swap_format, "%s", "%f%*s %f");
conv_factor = 1;
}
# endif
# ifdef _AIX
if (!allswaps) {
fgets(input_buffer, MAX_INPUT_BUFFER - 1, child_process); /* Ignore first line */
- sscanf (input_buffer, swap_format, &total_swap, &used_swap);
- free_swap = total_swap * (100 - used_swap) /100;
- used_swap = total_swap - free_swap;
+ sscanf (input_buffer, swap_format, &total_swap_mb, &used_swap_mb);
+ free_swap_mb = total_swap_mb * (100 - used_swap_mb) /100;
+ used_swap_mb = total_swap_mb - free_swap_mb;
if (verbose >= 3)
- printf (_("total=%d, used=%d, free=%d\n"), total_swap, used_swap, free_swap);
+ printf (_("total=%.0f, used=%.0f, free=%.0f\n"), total_swap_mb, used_swap_mb, free_swap_mb);
} else {
# endif
while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
- sscanf (input_buffer, swap_format, &dsktotal, &dskfree);
+ sscanf (input_buffer, swap_format, &dsktotal_mb, &dskfree_mb);
- dsktotal = dsktotal / conv_factor;
+ dsktotal_mb = dsktotal_mb / conv_factor;
/* AIX lists percent used, so this converts to dskfree in MBs */
# ifdef _AIX
- dskfree = dsktotal * (100 - dskfree) / 100;
+ dskfree_mb = dsktotal_mb * (100 - dskfree_mb) / 100;
# else
- dskfree = dskfree / conv_factor;
+ dskfree_mb = dskfree_mb / conv_factor;
# endif
if (verbose >= 3)
- printf (_("total=%d, free=%d\n"), dsktotal, dskfree);
+ printf (_("total=%.0f, free=%.0f\n"), dsktotal_mb, dskfree_mb);
- dskused = dsktotal - dskfree;
- total_swap += dsktotal;
- used_swap += dskused;
- free_swap += dskfree;
+ dskused_mb = dsktotal_mb - dskfree_mb;
+ total_swap_mb += dsktotal_mb;
+ used_swap_mb += dskused_mb;
+ free_swap_mb += dskfree_mb;
if (allswaps) {
- percent = 100 * (((double) dskused) / ((double) dsktotal));
- result = max_state (result, check_swap (percent, dskfree));
+ percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
+ result = max_state (result, check_swap (percent, dskfree_mb));
if (verbose)
- asprintf (&status, "%s [%llu (%d%%)]", status, dskfree, 100 - percent);
+ asprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
}
}
# ifdef _AIX
# ifdef CHECK_SWAP_SWAPCTL_SVR4
/* get the number of active swap devices */
- nswaps=swapctl(SC_GETNSWP, NULL);
+ if((nswaps=swapctl(SC_GETNSWP, NULL))== -1)
+ die(STATE_UNKNOWN, _("Error getting swap devices\n") );
+
+ if(nswaps == 0)
+ die(STATE_OK, _("SWAP OK: No swap devices defined\n"));
+
+ if(verbose >= 3)
+ printf("Found %d swap device(s)\n", nswaps);
/* initialize swap table + entries */
tbl=(swaptbl_t*)malloc(sizeof(swaptbl_t)+(sizeof(swapent_t)*nswaps));
+
+ if(tbl==NULL)
+ die(STATE_UNKNOWN, _("malloc() failed!\n"));
+
memset(tbl, 0, sizeof(swaptbl_t)+(sizeof(swapent_t)*nswaps));
tbl->swt_n=nswaps;
for(i=0;i<nswaps;i++){
- ent=&tbl->swt_ent[i];
- ent->ste_path=(char*)malloc(sizeof(char)*MAXPATHLEN);
+ if((tbl->swt_ent[i].ste_path=(char*)malloc(sizeof(char)*MAXPATHLEN)) == NULL)
+ die(STATE_UNKNOWN, _("malloc() failed!\n"));
}
/* and now, tally 'em up */
swapctl_res=swapctl(SC_LIST, tbl);
if(swapctl_res < 0){
- perror("swapctl failed: ");
- result = STATE_WARNING;
+ perror(_("swapctl failed: "));
+ die(STATE_UNKNOWN, _("Error in swapctl call\n"));
}
for(i=0;i<nswaps;i++){
- dsktotal = tbl->swt_ent[i].ste_pages / SWAP_CONVERSION;
- dskfree = tbl->swt_ent[i].ste_free / SWAP_CONVERSION;
- dskused = ( dsktotal - dskfree );
+ dsktotal_mb = (float) tbl->swt_ent[i].ste_pages / SWAP_CONVERSION;
+ dskfree_mb = (float) tbl->swt_ent[i].ste_free / SWAP_CONVERSION;
+ dskused_mb = ( dsktotal_mb - dskfree_mb );
+
+ if (verbose >= 3)
+ printf ("dsktotal_mb=%.0f dskfree_mb=%.0f dskused_mb=%.0f\n", dsktotal_mb, dskfree_mb, dskused_mb);
- if(allswaps && dsktotal > 0){
- percent = 100 * (((double) dskused) / ((double) dsktotal));
- result = max_state (result, check_swap (percent, dskfree));
+ if(allswaps && dsktotal_mb > 0){
+ percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
+ result = max_state (result, check_swap (percent, dskfree_mb));
if (verbose) {
- asprintf (&status, "%s [%d (%d%%)]", status, (int)dskfree, 100 - percent);
+ asprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
}
}
- total_swap += dsktotal;
- free_swap += dskfree;
- used_swap += dskused;
+ total_swap_mb += dsktotal_mb;
+ free_swap_mb += dskfree_mb;
+ used_swap_mb += dskused_mb;
}
/* and clean up after ourselves */
/* and now, tally 'em up */
swapctl_res=swapctl(SWAP_STATS, ent, nswaps);
if(swapctl_res < 0){
- perror("swapctl failed: ");
- result = STATE_WARNING;
+ perror(_("swapctl failed: "));
+ die(STATE_UNKNOWN, _("Error in swapctl call\n"));
}
for(i=0;i<nswaps;i++){
- dsktotal = ent->se_nblks / conv_factor;
- dskused = ent->se_inuse / conv_factor;
- dskfree = ( dsktotal - dskused );
+ dsktotal_mb = (float) ent[i].se_nblks / conv_factor;
+ dskused_mb = (float) ent[i].se_inuse / conv_factor;
+ dskfree_mb = ( dsktotal_mb - dskused_mb );
- if(allswaps && dsktotal > 0){
- percent = 100 * (((double) dskused) / ((double) dsktotal));
- result = max_state (result, check_swap (percent, dskfree));
+ if(allswaps && dsktotal_mb > 0){
+ percent = 100 * (((double) dskused_mb) / ((double) dsktotal_mb));
+ result = max_state (result, check_swap (percent, dskfree_mb));
if (verbose) {
- asprintf (&status, "%s [%d (%d%%)]", status, (int)dskfree, 100 - percent);
+ asprintf (&status, "%s [%.0f (%d%%)]", status, dskfree_mb, 100 - percent);
}
}
- total_swap += dsktotal;
- free_swap += dskfree;
- used_swap += dskused;
+ total_swap_mb += dsktotal_mb;
+ free_swap_mb += dskfree_mb;
+ used_swap_mb += dskused_mb;
}
/* and clean up after ourselves */
# endif /* HAVE_SWAP */
#endif /* HAVE_PROC_MEMINFO */
- percent_used = 100 * ((double) used_swap) / ((double) total_swap);
- result = max_state (result, check_swap (percent_used, free_swap));
- /* broken into two steps because of funkiness with builtin asprintf */
- asprintf (&tmp_status, _(" %d%% free (%llu MB out of %llu MB)"),
- (100 - percent_used), free_swap, total_swap);
- asprintf (&status, "%s%s", tmp_status, status);
-
- asprintf (&perf, "%s", perfdata ("swap", (long) free_swap, "MB",
- TRUE, (long) max (warn_size/1024, warn_percent/100.0*total_swap),
- TRUE, (long) max (crit_size/1024, crit_percent/100.0*total_swap),
- TRUE, 0,
- TRUE, (long) total_swap));
- printf ("SWAP %s:%s |%s\n", state_text (result), status, perf);
+ /* if total_swap_mb == 0, let's not divide by 0 */
+ if(total_swap_mb) {
+ percent_used = 100 * ((double) used_swap_mb) / ((double) total_swap_mb);
+ } else {
+ percent_used = 0;
+ }
+
+ result = max_state (result, check_swap (percent_used, free_swap_mb));
+ printf (_("SWAP %s - %d%% free (%d MB out of %d MB) %s|"),
+ state_text (result),
+ (100 - percent_used), (int) free_swap_mb, (int) total_swap_mb, status);
+
+ puts (perfdata ("swap", (long) free_swap_mb, "MB",
+ TRUE, (long) max (warn_size_bytes/(1024 * 1024), warn_percent/100.0*total_swap_mb),
+ TRUE, (long) max (crit_size_bytes/(1024 * 1024), crit_percent/100.0*total_swap_mb),
+ TRUE, 0,
+ TRUE, (long) total_swap_mb));
+
return result;
}
int
-check_swap (int usp, long unsigned int free_swap)
+check_swap (int usp, float free_swap_mb)
{
int result = STATE_UNKNOWN;
- free_swap = free_swap * 1024; /* Convert back to bytes as warn and crit specified in bytes */
+ float free_swap = free_swap_mb * (1024 * 1024); /* Convert back to bytes as warn and crit specified in bytes */
if (usp >= 0 && crit_percent != 0 && usp >= (100.0 - crit_percent))
result = STATE_CRITICAL;
- else if (crit_size > 0 && free_swap <= crit_size)
+ else if (crit_size_bytes > 0 && free_swap <= crit_size_bytes)
result = STATE_CRITICAL;
else if (usp >= 0 && warn_percent != 0 && usp >= (100.0 - warn_percent))
result = STATE_WARNING;
- else if (warn_size > 0 && free_swap <= warn_size)
+ else if (warn_size_bytes > 0 && free_swap <= warn_size_bytes)
result = STATE_WARNING;
else if (usp >= 0.0)
result = STATE_OK;
switch (c) {
case 'w': /* warning size threshold */
if (is_intnonneg (optarg)) {
- warn_size = atoi (optarg);
+ warn_size_bytes = (float) atoi (optarg);
break;
}
else if (strstr (optarg, ",") &&
strstr (optarg, "%") &&
- sscanf (optarg, "%llu,%d%%", &warn_size, &warn_percent) == 2) {
+ sscanf (optarg, "%f,%d%%", &warn_size_bytes, &warn_percent) == 2) {
+ warn_size_bytes = floorf(warn_size_bytes);
break;
}
else if (strstr (optarg, "%") &&
break;
}
else {
- usage (_("Warning threshold must be integer or percentage!\n"));
+ usage4 (_("Warning threshold must be integer or percentage!"));
}
case 'c': /* critical size threshold */
if (is_intnonneg (optarg)) {
- crit_size = atoi (optarg);
+ crit_size_bytes = (float) atoi (optarg);
break;
}
else if (strstr (optarg, ",") &&
strstr (optarg, "%") &&
- sscanf (optarg, "%llu,%d%%", &crit_size, &crit_percent) == 2) {
+ sscanf (optarg, "%f,%d%%", &crit_size_bytes, &crit_percent) == 2) {
+ crit_size_bytes = floorf(crit_size_bytes);
break;
}
else if (strstr (optarg, "%") &&
break;
}
else {
- usage (_("Critical threshold must be integer or percentage!\n"));
+ usage4 (_("Critical threshold must be integer or percentage!"));
}
case 'a': /* all swap */
allswaps = TRUE;
verbose++;
break;
case 'V': /* version */
- print_revision (progname, revision);
+ print_revision (progname, NP_VERSION);
exit (STATE_OK);
case 'h': /* help */
print_help ();
exit (STATE_OK);
case '?': /* error */
- printf (_("%s: Unknown argument: %s\n\n"), progname, optarg);
- print_usage ();
- exit (STATE_UNKNOWN);
+ usage5 ();
}
}
if (c == argc)
return validate_arguments ();
- if (warn_size == 0 && is_intnonneg (argv[c]))
- warn_size = atoi (argv[c++]);
+ 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 == 0 && is_intnonneg (argv[c]))
- crit_size = atoi (argv[c++]);
+ 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 == 0
- && crit_size == 0) {
+ if (warn_percent == 0 && crit_percent == 0 && warn_size_bytes == 0
+ && crit_size_bytes == 0) {
return ERROR;
}
else if (warn_percent < crit_percent) {
- usage
- (_("Warning percentage should be more than critical percentage\n"));
+ usage4
+ (_("Warning percentage should be more than critical percentage"));
}
- else if (warn_size < crit_size) {
- usage
- (_("Warning free space should be more than critical free space\n"));
+ 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);
+ print_revision (progname, NP_VERSION);
printf (_(COPYRIGHT), copyright, email);
- printf (_("Check swap space on local machine.\n\n"));
+ printf ("%s\n", _("Check swap space on local machine."));
+
+ printf ("\n\n");
print_usage ();
- printf (_(UT_HELP_VRSN));
-
- printf (_("\n\
- -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 less than PERCENT of swap space is free\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 less than PERCENT of swap space is free\n\
- -a, --allswaps\n\
- Conduct comparisons for all swap partitions, one by one\n\
- -v, --verbose\n\
- Verbose output. Up to 3 levels\n"));
-
- printf (_("\n\
-On Solaris, if -a specified, uses swap -l, otherwise uses swap -s.\n\
-Will be discrepencies because swap -s counts allocated swap and includes\n\
-real memory\n"));
- printf (_("\n\
-On AIX, if -a is specified, uses lsps -a, otherwise uses lsps -s.\n"));
-
- printf (_(UT_SUPPORT));
+ printf (UT_HELP_VRSN);
+ printf (UT_EXTRA_OPTS);
+
+ 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 (UT_VERBOSE);
+
+ printf ("\n");
+ printf ("%s\n", _("Notes:"));
+ printf (" %s\n", _("On AIX, if -a is specified, uses lsps -a, otherwise uses lsps -s."));
+#ifdef NP_EXTRA_OPTS
+ printf ("\n");
+ printf (UT_EXTRA_OPTS_NOTES);
+#endif
+
+
+ printf (UT_SUPPORT);
}
void
print_usage (void)
{
- printf ("\
- Usage: %s [-av] -w <percent_free>%% -c <percent_free>%%\n\
- %s [-av] -w <bytes_free> -c <bytes_free>\n", progname, progname);
+ printf (_("Usage:"));
+ printf ("%s [-av] -w <percent_free>%% -c <percent_free>%%\n",progname);
+ printf ("%s [-av] -w <bytes_free> -c <bytes_free>\n", progname);
}