diff options
Diffstat (limited to '')
| -rw-r--r-- | plugins/check_disk.c | 1170 |
1 files changed, 1170 insertions, 0 deletions
diff --git a/plugins/check_disk.c b/plugins/check_disk.c new file mode 100644 index 0000000..2f066c7 --- /dev/null +++ b/plugins/check_disk.c @@ -0,0 +1,1170 @@ +/***************************************************************************** +* +* Monitoring check_disk plugin +* +* License: GPL +* Copyright (c) 1999-2008 Monitoring 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_disk"; +const char *program_name = "check_disk"; /* Required for coreutils libs */ +const char *copyright = "1999-2008"; +const char *email = "devel@monitoring-plugins.org"; + + +#include "common.h" +#ifdef HAVE_SYS_STAT_H +# include <sys/stat.h> +#endif +#if HAVE_INTTYPES_H +# include <inttypes.h> +#endif +#include <assert.h> +#include "popen.h" +#include "utils.h" +#include "utils_disk.h" +#include <stdarg.h> +#include "fsusage.h" +#include "mountlist.h" +#include "intprops.h" /* necessary for TYPE_MAXIMUM */ +#if HAVE_LIMITS_H +# include <limits.h> +#endif +#include "regex.h" + +#ifdef __CYGWIN__ +# include <windows.h> +# undef ERROR +# define ERROR -1 +#endif + +/* If nonzero, show even filesystems with zero size or + uninteresting types. */ +static int show_all_fs = 1; + +/* If nonzero, show only local filesystems. */ +static int show_local_fs = 0; + +/* If nonzero, show only local filesystems but call stat() on remote ones. */ +static int stat_remote_fs = 0; + +/* If positive, the units to use when printing sizes; + if negative, the human-readable base. */ +/* static int output_block_size; */ + +/* If nonzero, invoke the `sync' system call before getting any usage data. + Using this option can make df very slow, especially with many or very + busy disks. Note that this may make a difference on some systems -- + SunOs4.1.3, for one. It is *not* necessary on Linux. */ +/* static int require_sync = 0; */ + +/* Linked list of filesystem types to display. + If `fs_select_list' is NULL, list all types. + This table is generated dynamically from command-line options, + rather than hardcoding into the program what it thinks are the + valid filesystem types; let the user specify any filesystem type + they want to, and if there are any filesystems of that type, they + will be shown. + + Some filesystem types: + 4.2 4.3 ufs nfs swap ignore io vm efs dbg */ + +/* static struct parameter_list *fs_select_list; */ + +/* Linked list of filesystem types to omit. + If the list is empty, don't exclude any types. */ +static struct regex_list *fs_exclude_list = NULL; + +/* Linked list of filesystem types to check. + If the list is empty, include all types. */ +static struct regex_list *fs_include_list; + +static struct name_list *dp_exclude_list; + +static struct parameter_list *path_select_list = NULL; + +/* Linked list of mounted filesystems. */ +static struct mount_entry *mount_list; + +/* For long options that have no equivalent short option, use a + non-character as a pseudo short option, starting with CHAR_MAX + 1. */ +enum +{ + SYNC_OPTION = CHAR_MAX + 1, + NO_SYNC_OPTION, + BLOCK_SIZE_OPTION, + IGNORE_MISSING +}; + +#ifdef _AIX +#pragma alloca +#endif + +int process_arguments (int, char **); +void print_path (const char *mypath); +void set_all_thresholds (struct parameter_list *path); +int validate_arguments (uintmax_t, uintmax_t, double, double, double, double, char *); +void print_help (void); +void print_usage (void); +double calculate_percent(uintmax_t, uintmax_t); +bool stat_path (struct parameter_list *p); +void get_stats (struct parameter_list *p, struct fs_usage *fsp); +void get_path_stats (struct parameter_list *p, struct fs_usage *fsp); + +char *exclude_device; +char *units; +uintmax_t mult = 1024 * 1024; +int verbose = 0; +int erronly = FALSE; +int display_mntp = FALSE; +int exact_match = FALSE; +bool ignore_missing = false; +int freespace_ignore_reserved = FALSE; +int display_inodes_perfdata = FALSE; +char *warn_freespace_units = NULL; +char *crit_freespace_units = NULL; +char *warn_freespace_percent = NULL; +char *crit_freespace_percent = NULL; +char *warn_usedspace_units = NULL; +char *crit_usedspace_units = NULL; +char *warn_usedspace_percent = NULL; +char *crit_usedspace_percent = NULL; +char *warn_usedinodes_percent = NULL; +char *crit_usedinodes_percent = NULL; +char *warn_freeinodes_percent = NULL; +char *crit_freeinodes_percent = NULL; +int path_selected = FALSE; +bool path_ignored = false; +char *group = NULL; +struct stat *stat_buf; +struct name_list *seen = NULL; + + +int +main (int argc, char **argv) +{ + int result = STATE_UNKNOWN; + int disk_result = STATE_UNKNOWN; + char *output; + char *ignored; + char *details; + char *perf; + char *perf_ilabel; + char *preamble = " - free space:"; + char *ignored_preamble = " - ignored paths:"; + char *flag_header; + int temp_result; + + struct mount_entry *me; + struct fs_usage fsp; + struct parameter_list *temp_list, *path; + +#ifdef __CYGWIN__ + char mountdir[32]; +#endif + + output = strdup (""); + ignored = strdup (""); + details = strdup (""); + perf = strdup (""); + perf_ilabel = strdup (""); + stat_buf = malloc(sizeof *stat_buf); + + setlocale (LC_ALL, ""); + bindtextdomain (PACKAGE, LOCALEDIR); + textdomain (PACKAGE); + + mount_list = read_file_system_list (0); + + /* Parse extra opts if any */ + argv = np_extra_opts (&argc, argv, progname); + + if (process_arguments (argc, argv) == ERROR) + usage4 (_("Could not parse arguments")); + + /* If a list of paths has not been selected, find entire + mount list and create list of paths + */ + if (path_selected == FALSE && path_ignored == false) { + for (me = mount_list; me; me = me->me_next) { + if (! (path = np_find_parameter(path_select_list, me->me_mountdir))) { + path = np_add_parameter(&path_select_list, me->me_mountdir); + } + path->best_match = me; + path->group = group; + set_all_thresholds(path); + } + } + + if (path_ignored == false) { + np_set_best_match(path_select_list, mount_list, exact_match); + } + + /* Error if no match found for specified paths */ + temp_list = path_select_list; + + while (path_select_list) { + if (! path_select_list->best_match && ignore_missing == true) { + /* If the first element will be deleted, the temp_list must be updated with the new start address as well */ + if (path_select_list == temp_list) { + temp_list = path_select_list->name_next; + } + /* Add path argument to list of ignored paths to inform about missing paths being ignored and not alerted */ + xasprintf (&ignored, "%s %s;", ignored, path_select_list->name); + /* Delete the path from the list so that it is not stat-checked later in the code. */ + path_select_list = np_del_parameter(path_select_list, path_select_list->name_prev); + } else if (! path_select_list->best_match) { + /* Without --ignore-missing option, exit with Critical state. */ + die (STATE_CRITICAL, _("DISK %s: %s not found\n"), _("CRITICAL"), path_select_list->name); + } else { + /* Continue jumping through the list */ + path_select_list = path_select_list->name_next; + } + } + + path_select_list = temp_list; + + if (! path_select_list && ignore_missing == true) { + result = STATE_OK; + if (verbose >= 2) { + printf ("None of the provided paths were found\n"); + } + } + + /* Process for every path in list */ + for (path = path_select_list; path; path=path->name_next) { + if (verbose >= 3 && path->freespace_percent->warning != NULL && path->freespace_percent->critical != NULL) + printf("Thresholds(pct) for %s warn: %f crit %f\n", + path->name, + path->freespace_percent->warning->end, + path->freespace_percent->critical->end); + + if (verbose >= 3 && path->group != NULL) + printf("Group of %s: %s\n",path->name,path->group); + + /* reset disk result */ + disk_result = STATE_UNKNOWN; + + me = path->best_match; + + if (!me) { + continue; + } + +#ifdef __CYGWIN__ + if (strncmp(path->name, "/cygdrive/", 10) != 0 || strlen(path->name) > 11) + continue; + snprintf(mountdir, sizeof(mountdir), "%s:\\", me->me_mountdir + 10); + if (GetDriveType(mountdir) != DRIVE_FIXED) + me->me_remote = 1; +#endif + /* Filters */ + + /* Remove filesystems already seen */ + if (np_seen_name(seen, me->me_mountdir)) { + continue; + } + np_add_name(&seen, me->me_mountdir); + + if (path->group == NULL) { + /* Skip remote filesystems if we're not interested in them */ + if (me->me_remote && show_local_fs) { + if (stat_remote_fs) { + if (!stat_path(path) && ignore_missing == true) { + result = STATE_OK; + xasprintf (&ignored, "%s %s;", ignored, path->name); + } + } + continue; + /* Skip pseudo fs's if we haven't asked for all fs's */ + } else if (me->me_dummy && !show_all_fs) { + continue; + /* Skip excluded fstypes */ + } else if (fs_exclude_list && np_find_regmatch (fs_exclude_list, me->me_type)) { + continue; + /* Skip excluded fs's */ + } else if (dp_exclude_list && + (np_find_name (dp_exclude_list, me->me_devname) || + np_find_name (dp_exclude_list, me->me_mountdir))) { + continue; + /* Skip not included fstypes */ + } else if (fs_include_list && !np_find_regmatch(fs_include_list, me->me_type)) { + continue; + } + } + + if (!stat_path(path)) { + if (ignore_missing == true) { + result = STATE_OK; + xasprintf (&ignored, "%s %s;", ignored, path->name); + } + continue; + } + get_fs_usage (me->me_mountdir, me->me_devname, &fsp); + + if (fsp.fsu_blocks && strcmp ("none", me->me_mountdir)) { + get_stats (path, &fsp); + + if (verbose >= 3) { + printf ("For %s, used_pct=%g free_pct=%g used_units=%lu free_units=%lu total_units=%lu used_inodes_pct=%g free_inodes_pct=%g fsp.fsu_blocksize=%lu mult=%lu\n", + me->me_mountdir, + path->dused_pct, + path->dfree_pct, + path->dused_units, + path->dfree_units, + path->dtotal_units, + path->dused_inodes_percent, + path->dfree_inodes_percent, + fsp.fsu_blocksize, + mult); + } + + /* Threshold comparisons */ + + temp_result = get_status(path->dfree_units, path->freespace_units); + if (verbose >=3) printf("Freespace_units result=%d\n", temp_result); + disk_result = max_state( disk_result, temp_result ); + + temp_result = get_status(path->dfree_pct, path->freespace_percent); + if (verbose >=3) printf("Freespace%% result=%d\n", temp_result); + disk_result = max_state( disk_result, temp_result ); + + temp_result = get_status(path->dused_units, path->usedspace_units); + if (verbose >=3) printf("Usedspace_units result=%d\n", temp_result); + disk_result = max_state( disk_result, temp_result ); + + temp_result = get_status(path->dused_pct, path->usedspace_percent); + if (verbose >=3) printf("Usedspace_percent result=%d\n", temp_result); + disk_result = max_state( disk_result, temp_result ); + + temp_result = get_status(path->dused_inodes_percent, path->usedinodes_percent); + if (verbose >=3) printf("Usedinodes_percent result=%d\n", temp_result); + disk_result = max_state( disk_result, temp_result ); + + temp_result = get_status(path->dfree_inodes_percent, path->freeinodes_percent); + if (verbose >=3) printf("Freeinodes_percent result=%d\n", temp_result); + disk_result = max_state( disk_result, temp_result ); + + result = max_state(result, disk_result); + + /* What a mess of units. The output shows free space, the perf data shows used space. Yikes! + Hack here. Trying to get warn/crit levels from freespace_(units|percent) for perf + data. Assumption that start=0. Roll on new syntax... + */ + + /* *_high_tide must be reinitialized at each run */ + uint64_t warning_high_tide = UINT64_MAX; + + if (path->freespace_units->warning != NULL) { + warning_high_tide = (path->dtotal_units - path->freespace_units->warning->end) * mult; + } + if (path->freespace_percent->warning != NULL) { + warning_high_tide = min( warning_high_tide, (uint64_t)((1.0 - path->freespace_percent->warning->end/100) * (path->dtotal_units * mult)) ); + } + + uint64_t critical_high_tide = UINT64_MAX; + + if (path->freespace_units->critical != NULL) { + critical_high_tide = (path->dtotal_units - path->freespace_units->critical->end) * mult; + } + if (path->freespace_percent->critical != NULL) { + critical_high_tide = min( critical_high_tide, (uint64_t)((1.0 - path->freespace_percent->critical->end/100) * (path->dtotal_units * mult)) ); + } + + /* Nb: *_high_tide are unset when == UINT64_MAX */ + xasprintf (&perf, "%s %s", perf, + perfdata_uint64 ( + (!strcmp(me->me_mountdir, "none") || display_mntp) ? me->me_devname : me->me_mountdir, + path->dused_units * mult, "B", + (warning_high_tide == UINT64_MAX ? FALSE : TRUE), warning_high_tide, + (critical_high_tide == UINT64_MAX ? FALSE : TRUE), critical_high_tide, + TRUE, 0, + TRUE, path->dtotal_units * mult)); + + if (display_inodes_perfdata) { + /* *_high_tide must be reinitialized at each run */ + warning_high_tide = UINT64_MAX; + critical_high_tide = UINT64_MAX; + + if (path->freeinodes_percent->warning != NULL) { + warning_high_tide = (uint64_t) fabs( min( (double) warning_high_tide, (double) (1.0 - path->freeinodes_percent->warning->end/100)*path->inodes_total )); + } + if (path->freeinodes_percent->critical != NULL) { + critical_high_tide = (uint64_t) fabs( min( (double) critical_high_tide, (double) (1.0 - path->freeinodes_percent->critical->end/100)*path->inodes_total )); + } + + xasprintf (&perf_ilabel, "%s (inodes)", (!strcmp(me->me_mountdir, "none") || display_mntp) ? me->me_devname : me->me_mountdir); + /* Nb: *_high_tide are unset when == UINT64_MAX */ + xasprintf (&perf, "%s %s", perf, + perfdata_uint64 (perf_ilabel, + path->inodes_used, "", + (warning_high_tide != UINT64_MAX ? TRUE : FALSE), warning_high_tide, + (critical_high_tide != UINT64_MAX ? TRUE : FALSE), critical_high_tide, + TRUE, 0, + TRUE, path->inodes_total)); + } + + if (disk_result==STATE_OK && erronly && !verbose) + continue; + + if(disk_result && verbose >= 1) { + xasprintf(&flag_header, " %s [", state_text (disk_result)); + } else { + xasprintf(&flag_header, ""); + } + xasprintf (&output, "%s%s %s %llu%s (%.0f%%", + output, flag_header, + (!strcmp(me->me_mountdir, "none") || display_mntp) ? me->me_devname : me->me_mountdir, + path->dfree_units, + units, + path->dfree_pct); + if (path->dused_inodes_percent < 0) { + xasprintf(&output, "%s inode=-)%s;", output, (disk_result ? "]" : "")); + } else { + xasprintf(&output, "%s inode=%.0f%%)%s;", output, path->dfree_inodes_percent, ((disk_result && verbose >= 1) ? "]" : "")); + } + free(flag_header); + } + } + + if (verbose >= 2) + xasprintf (&output, "%s%s", output, details); + + if (strcmp(output, "") == 0 && ! erronly) { + preamble = ""; + xasprintf (&output, " - No disks were found for provided parameters;"); + } + + printf ("DISK %s%s%s%s%s|%s\n", state_text (result), ((erronly && result==STATE_OK)) ? "" : preamble, output, (strcmp(ignored, "") == 0) ? "" : ignored_preamble, ignored, perf); + return result; +} + + +double calculate_percent(uintmax_t value, uintmax_t total) { + double pct = -1; + /* I don't understand the below, but it is taken from coreutils' df */ + /* Seems to be calculating pct, in the best possible way */ + if (value <= TYPE_MAXIMUM(uintmax_t) / 100 + && total != 0) { + uintmax_t u100 = value * 100; + pct = u100 / total + (u100 % total != 0); + } else { + /* Possible rounding errors - see coreutils' df for more explanation */ + double u = value; + double t = total; + if (t) { + long int lipct = pct = u * 100 / t; + double ipct = lipct; + + /* Like 'pct = ceil (dpct);', but without ceil - from coreutils again */ + if (ipct - 1 < pct && pct <= ipct + 1) + pct = ipct + (ipct < pct); + } + } + return pct; +} + +/* process command-line arguments */ +int +process_arguments (int argc, char **argv) +{ + int c, err; + struct parameter_list *se; + struct parameter_list *temp_list = NULL, *previous = NULL; + struct mount_entry *me; + regex_t re; + int cflags = REG_NOSUB | REG_EXTENDED; + int default_cflags = cflags; + char errbuf[MAX_INPUT_BUFFER]; + int fnd = 0; + + int option = 0; + static struct option longopts[] = { + {"timeout", required_argument, 0, 't'}, + {"warning", required_argument, 0, 'w'}, + {"critical", required_argument, 0, 'c'}, + {"iwarning", required_argument, 0, 'W'}, + /* Dang, -C is taken. We might want to reshuffle this. */ + {"icritical", required_argument, 0, 'K'}, + {"kilobytes", no_argument, 0, 'k'}, + {"megabytes", no_argument, 0, 'm'}, + {"units", required_argument, 0, 'u'}, + {"path", required_argument, 0, 'p'}, + {"partition", required_argument, 0, 'p'}, + {"exclude_device", required_argument, 0, 'x'}, + {"exclude-type", required_argument, 0, 'X'}, + {"include-type", required_argument, 0, 'N'}, + {"group", required_argument, 0, 'g'}, + {"eregi-path", required_argument, 0, 'R'}, + {"eregi-partition", required_argument, 0, 'R'}, + {"ereg-path", required_argument, 0, 'r'}, + {"ereg-partition", required_argument, 0, 'r'}, + {"freespace-ignore-reserved", no_argument, 0, 'f'}, + {"ignore-ereg-path", required_argument, 0, 'i'}, + {"ignore-ereg-partition", required_argument, 0, 'i'}, + {"ignore-eregi-path", required_argument, 0, 'I'}, + {"ignore-eregi-partition", required_argument, 0, 'I'}, + {"ignore-missing", no_argument, 0, IGNORE_MISSING}, + {"local", no_argument, 0, 'l'}, + {"stat-remote-fs", no_argument, 0, 'L'}, + {"iperfdata", no_argument, 0, 'P'}, + {"mountpoint", no_argument, 0, 'M'}, + {"errors-only", no_argument, 0, 'e'}, + {"exact-match", no_argument, 0, 'E'}, + {"all", no_argument, 0, 'A'}, + {"verbose", no_argument, 0, 'v'}, + {"quiet", no_argument, 0, 'q'}, + {"clear", no_argument, 0, 'C'}, + {"version", no_argument, 0, 'V'}, + {"help", no_argument, 0, 'h'}, + {0, 0, 0, 0} + }; + + if (argc < 2) + return ERROR; + + np_add_regex(&fs_exclude_list, "iso9660", REG_EXTENDED); + + for (c = 1; c < argc; c++) + if (strcmp ("-to", argv[c]) == 0) + strcpy (argv[c], "-t"); + + while (1) { + c = getopt_long (argc, argv, "+?VqhvefCt:c:w:K:W:u:p:x:X:N:mklLPg:R:r:i:I:MEA", longopts, &option); + + if (c == -1 || c == EOF) + break; + + switch (c) { + case 't': /* timeout period */ + if (is_integer (optarg)) { + timeout_interval = atoi (optarg); + break; + } + else { + usage2 (_("Timeout interval must be a positive integer"), optarg); + } + + /* See comments for 'c' */ + case 'w': /* warning threshold */ + if (strstr(optarg, "%")) { + if (*optarg == '@') { + warn_freespace_percent = optarg; + } else { + xasprintf(&warn_freespace_percent, "@%s", optarg); + } + } else { + if (*optarg == '@') { + warn_freespace_units = optarg; + } else { + xasprintf(&warn_freespace_units, "@%s", optarg); + } + } + break; + + /* Awful mistake where the range values do not make sense. Normally, + you alert if the value is within the range, but since we are using + freespace, we have to alert if outside the range. Thus we artificially + force @ at the beginning of the range, so that it is backwards compatible + */ + case 'c': /* critical threshold */ + if (strstr(optarg, "%")) { + if (*optarg == '@') { + crit_freespace_percent = optarg; + } else { + xasprintf(&crit_freespace_percent, "@%s", optarg); + } + } else { + if (*optarg == '@') { + crit_freespace_units = optarg; + } else { + xasprintf(&crit_freespace_units, "@%s", optarg); + } + } + break; + + case 'W': /* warning inode threshold */ + if (*optarg == '@') { + warn_freeinodes_percent = optarg; + } else { + xasprintf(&warn_freeinodes_percent, "@%s", optarg); + } + break; + case 'K': /* critical inode threshold */ + if (*optarg == '@') { + crit_freeinodes_percent = optarg; + } else { + xasprintf(&crit_freeinodes_percent, "@%s", optarg); + } + break; + case 'u': + if (units) + free(units); + if (! strcasecmp (optarg, "bytes")) { + mult = (uintmax_t)1; + units = strdup ("B"); + } else if (!strcmp(optarg, "KiB")) { + mult = (uintmax_t)1024; + units = strdup ("KiB"); + } else if (! strcmp (optarg, "kB")) { + mult = (uintmax_t)1000; + units = strdup ("kB"); + } else if (!strcmp(optarg, "MiB")) { + mult = (uintmax_t)1024 * 1024; + units = strdup ("MiB"); + } else if (! strcmp (optarg, "MB")) { + mult = (uintmax_t)1000 * 1000; + units = strdup ("MB"); + } else if (!strcmp(optarg, "GiB")) { + mult = (uintmax_t)1024 * 1024 * 1024; + units = strdup ("GiB"); + } else if (! strcmp (optarg, "GB")){ + mult = (uintmax_t)1000 * 1000 * 1000; + units = strdup ("GB"); + } else if (!strcmp(optarg, "TiB")) { + mult = (uintmax_t)1024 * 1024 * 1024 * 1024; + units = strdup ("TiB"); + } else if (! strcmp (optarg, "TB")) { + mult = (uintmax_t)1000 * 1000 * 1000 * 1000; + units = strdup ("TB"); + } else if (!strcmp(optarg, "PiB")) { + mult = (uintmax_t)1024 * 1024 * 1024 * 1024 * 1024; + units = strdup ("PiB"); + } else if (! strcmp (optarg, "PB")){ + mult = (uintmax_t)1000 * 1000 * 1000 * 1000 * 1000; + units = strdup ("PB"); + } else { + die (STATE_UNKNOWN, _("unit type %s not known\n"), optarg); + } + if (units == NULL) + die (STATE_UNKNOWN, _("failed allocating storage for '%s'\n"), "units"); + break; + case 'k': /* display mountpoint */ + mult = 1024; + if (units) + free(units); + units = strdup ("kiB"); + break; + case 'm': /* display mountpoint */ + mult = 1024 * 1024; + if (units) + free(units); + units = strdup ("MiB"); + break; + case 'L': + stat_remote_fs = 1; + /* fallthrough */ + case 'l': + show_local_fs = 1; + break; + case 'P': + display_inodes_perfdata = 1; + break; + case 'p': /* select path */ + if (! (warn_freespace_units || crit_freespace_units || warn_freespace_percent || + crit_freespace_percent || warn_usedspace_units || crit_usedspace_units || + warn_usedspace_percent || crit_usedspace_percent || warn_usedinodes_percent || + crit_usedinodes_percent || warn_freeinodes_percent || crit_freeinodes_percent )) { + die (STATE_UNKNOWN, "DISK %s: %s", _("UNKNOWN"), _("Must set a threshold value before using -p\n")); + } + + /* add parameter if not found. overwrite thresholds if path has already been added */ + if (! (se = np_find_parameter(path_select_list, optarg))) { + se = np_add_parameter(&path_select_list, optarg); + + if (stat(optarg, &stat_buf[0]) && ignore_missing == true) { + path_ignored = true; + break; + } + } + se->group = group; + set_all_thresholds(se); + + /* With autofs, it is required to stat() the path before re-populating the mount_list */ + if (!stat_path(se)) { + break; + } + /* NB: We can't free the old mount_list "just like that": both list pointers and struct + * pointers are copied around. One of the reason it wasn't done yet is that other parts + * of check_disk need the same kind of cleanup so it'd better be done as a whole */ + mount_list = read_file_system_list (0); + np_set_best_match(se, mount_list, exact_match); + + path_selected = TRUE; + break; + case 'x': /* exclude path or partition */ + np_add_name(&dp_exclude_list, optarg); + break; + case 'X': /* exclude file system type */ + err = np_add_regex(&fs_exclude_list, optarg, REG_EXTENDED); + if (err != 0) { + regerror (err, &fs_exclude_list->regex, errbuf, MAX_INPUT_BUFFER); + die (STATE_UNKNOWN, "DISK %s: %s - %s\n",_("UNKNOWN"), _("Could not compile regular expression"), errbuf); + } + break; + case 'N': /* include file system type */ + err = np_add_regex(&fs_include_list, optarg, REG_EXTENDED); + if (err != 0) { + regerror (err, &fs_exclude_list->regex, errbuf, MAX_INPUT_BUFFER); + die (STATE_UNKNOWN, "DISK %s: %s - %s\n",_("UNKNOWN"), _("Could not compile regular expression"), errbuf); + } + break; + case 'v': /* verbose */ + verbose++; + break; + case 'q': /* TODO: this function should eventually go away (removed 2007-09-20) */ + /* verbose--; **replaced by line below**. -q was only a broken way of implementing -e */ + erronly = TRUE; + break; + case 'e': + erronly = TRUE; + break; + case 'E': + if (path_selected) + die (STATE_UNKNOWN, "DISK %s: %s", _("UNKNOWN"), _("Must set -E before selecting paths\n")); + exact_match = TRUE; + break; + case 'f': + freespace_ignore_reserved = TRUE; + break; + case 'g': + if (path_selected) + die (STATE_UNKNOWN, "DISK %s: %s", _("UNKNOWN"), _("Must set group value before selecting paths\n")); + group = optarg; + break; + case 'I': + cflags |= REG_ICASE; + // Intentional fallthrough + case 'i': + if (!path_selected) + die (STATE_UNKNOWN, "DISK %s: %s\n", _("UNKNOWN"), _("Paths need to be selected before using -i/-I. Use -A to select all paths explicitly")); + err = regcomp(&re, optarg, cflags); + if (err != 0) { + regerror (err, &re, errbuf, MAX_INPUT_BUFFER); + die (STATE_UNKNOWN, "DISK %s: %s - %s\n",_("UNKNOWN"), _("Could not compile regular expression"), errbuf); + } + + temp_list = path_select_list; + + previous = NULL; + while (temp_list) { + if (temp_list->best_match) { + if (np_regex_match_mount_entry(temp_list->best_match, &re)) { + + if (verbose >=3) + printf("ignoring %s matching regex\n", temp_list->name); + + temp_list = np_del_parameter(temp_list, previous); + /* pointer to first element needs to be updated if first item gets deleted */ + if (previous == NULL) + path_select_list = temp_list; + } else { + previous = temp_list; + temp_list = temp_list->name_next; + } + } else { + previous = temp_list; + temp_list = temp_list->name_next; + } + } + + + cflags = default_cflags; + break; + + case IGNORE_MISSING: + ignore_missing = true; + break; + case 'A': + optarg = strdup(".*"); + // Intentional fallthrough + case 'R': + cflags |= REG_ICASE; + // Intentional fallthrough + case 'r': + if (! (warn_freespace_units || crit_freespace_units || warn_freespace_percent || + crit_freespace_percent || warn_usedspace_units || crit_usedspace_units || + warn_usedspace_percent || crit_usedspace_percent || warn_usedinodes_percent || + crit_usedinodes_percent || warn_freeinodes_percent || crit_freeinodes_percent )) { + die (STATE_UNKNOWN, "DISK %s: %s", _("UNKNOWN"), _("Must set a threshold value before using -r/-R/-A (--ereg-path/--eregi-path/--all)\n")); + } + + err = regcomp(&re, optarg, cflags); + if (err != 0) { + regerror (err, &re, errbuf, MAX_INPUT_BUFFER); + die (STATE_UNKNOWN, "DISK %s: %s - %s\n",_("UNKNOWN"), _("Could not compile regular expression"), errbuf); + } + + for (me = mount_list; me; me = me->me_next) { + if (np_regex_match_mount_entry(me, &re)) { + fnd = TRUE; + if (verbose >= 3) + printf("%s %s matching expression %s\n", me->me_devname, me->me_mountdir, optarg); + + /* add parameter if not found. overwrite thresholds if path has already been added */ + if (! (se = np_find_parameter(path_select_list, me->me_mountdir))) { + se = np_add_parameter(&path_select_list, me->me_mountdir); + } + se->group = group; + set_all_thresholds(se); + } + } + + if (!fnd && ignore_missing == true) { + path_ignored = true; + /* path_selected = TRUE;*/ + break; + } else if (!fnd) + die (STATE_UNKNOWN, "DISK %s: %s - %s\n",_("UNKNOWN"), + _("Regular expression did not match any path or disk"), optarg); + + fnd = FALSE; + path_selected = TRUE; + np_set_best_match(path_select_list, mount_list, exact_match); + cflags = default_cflags; + + break; + case 'M': /* display mountpoint */ + display_mntp = TRUE; + break; + case 'C': + /* add all mount entries to path_select list if no partitions have been explicitly defined using -p */ + if (path_selected == FALSE) { + struct parameter_list *path; + for (me = mount_list; me; me = me->me_next) { + if (! (path = np_find_parameter(path_select_list, me->me_mountdir))) + path = np_add_parameter(&path_select_list, me->me_mountdir); + path->best_match = me; + path->group = group; + set_all_thresholds(path); + } + } + warn_freespace_units = NULL; + crit_freespace_units = NULL; + warn_usedspace_units = NULL; + crit_usedspace_units = NULL; + warn_freespace_percent = NULL; + crit_freespace_percent = NULL; + warn_usedspace_percent = NULL; + crit_usedspace_percent = NULL; + warn_usedinodes_percent = NULL; + crit_usedinodes_percent = NULL; + warn_freeinodes_percent = NULL; + crit_freeinodes_percent = NULL; + + path_selected = FALSE; + group = NULL; + break; + case 'V': /* version */ + print_revision (progname, NP_VERSION); + exit (STATE_UNKNOWN); + case 'h': /* help */ + print_help (); + exit (STATE_UNKNOWN); + case '?': /* help */ + usage (_("Unknown argument")); + } + } + + /* Support for "check_disk warn crit [fs]" with thresholds at used% level */ + c = optind; + if (warn_usedspace_percent == NULL && argc > c && is_intnonneg (argv[c])) + warn_usedspace_percent = argv[c++]; + + if (crit_usedspace_percent == NULL && argc > c && is_intnonneg (argv[c])) + crit_usedspace_percent = argv[c++]; + + if (argc > c) { + se = np_add_parameter(&path_select_list, strdup(argv[c++])); + path_selected = TRUE; + set_all_thresholds(se); + } + + if (units == NULL) { + units = strdup ("MiB"); + mult = (uintmax_t)1024 * 1024; + } + + return TRUE; +} + + + +void +print_path (const char *mypath) +{ + if (mypath == NULL) + printf ("\n"); + else + printf (_(" for %s\n"), mypath); +} + + +void +set_all_thresholds (struct parameter_list *path) +{ + if (path->freespace_units != NULL) free(path->freespace_units); + set_thresholds(&path->freespace_units, warn_freespace_units, crit_freespace_units); + if (path->freespace_percent != NULL) free (path->freespace_percent); + set_thresholds(&path->freespace_percent, warn_freespace_percent, crit_freespace_percent); + if (path->usedspace_units != NULL) free (path->usedspace_units); + set_thresholds(&path->usedspace_units, warn_usedspace_units, crit_usedspace_units); + if (path->usedspace_percent != NULL) free (path->usedspace_percent); + set_thresholds(&path->usedspace_percent, warn_usedspace_percent, crit_usedspace_percent); + if (path->usedinodes_percent != NULL) free (path->usedinodes_percent); + set_thresholds(&path->usedinodes_percent, warn_usedinodes_percent, crit_usedinodes_percent); + if (path->freeinodes_percent != NULL) free (path->freeinodes_percent); + set_thresholds(&path->freeinodes_percent, warn_freeinodes_percent, crit_freeinodes_percent); +} + +void +print_help (void) +{ + print_revision (progname, NP_VERSION); + + printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n"); + printf (COPYRIGHT, copyright, email); + + printf ("%s\n", _("This plugin checks the amount of used disk space on a mounted file system")); + printf ("%s\n", _("and generates an alert if free space is less than one of the threshold values")); + + printf ("\n\n"); + + print_usage (); + + 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 units of disk are free")); + printf (" %s\n", "-w, --warning=PERCENT%"); + printf (" %s\n", _("Exit with WARNING status if less than PERCENT of disk space is free")); + printf (" %s\n", "-c, --critical=INTEGER"); + printf (" %s\n", _("Exit with CRITICAL status if less than INTEGER units of disk are free")); + printf (" %s\n", "-c, --critical=PERCENT%"); + printf (" %s\n", _("Exit with CRITICAL status if less than PERCENT of disk space is free")); + printf (" %s\n", "-W, --iwarning=PERCENT%"); + printf (" %s\n", _("Exit with WARNING status if less than PERCENT of inode space is free")); + printf (" %s\n", "-K, --icritical=PERCENT%"); + printf (" %s\n", _("Exit with CRITICAL status if less than PERCENT of inode space is free")); + printf (" %s\n", "-p, --path=PATH, --partition=PARTITION"); + printf (" %s\n", _("Mount point or block device as emitted by the mount(8) command (may be repeated)")); + printf (" %s\n", "-x, --exclude_device=PATH <STRING>"); + printf (" %s\n", _("Ignore device (only works if -p unspecified)")); + printf (" %s\n", "-C, --clear"); + printf (" %s\n", _("Clear thresholds")); + printf (" %s\n", "-E, --exact-match"); + printf (" %s\n", _("For paths or partitions specified with -p, only check for exact paths")); + printf (" %s\n", "-e, --errors-only"); + printf (" %s\n", _("Display only devices/mountpoints with errors")); + printf (" %s\n", "-f, --freespace-ignore-reserved"); + printf (" %s\n", _("Don't account root-reserved blocks into freespace in perfdata")); + printf (" %s\n", "-P, --iperfdata"); + printf (" %s\n", _("Display inode usage in perfdata")); + printf (" %s\n", "-g, --group=NAME"); + printf (" %s\n", _("Group paths. Thresholds apply to (free-)space of all partitions together")); + printf (" %s\n", "-k, --kilobytes"); + printf (" %s\n", _("Same as '--units kB'")); + printf (" %s\n", "-l, --local"); + printf (" %s\n", _("Only check local filesystems")); + printf (" %s\n", "-L, --stat-remote-fs"); + printf (" %s\n", _("Only check local filesystems against thresholds. Yet call stat on remote filesystems")); + printf (" %s\n", _("to test if they are accessible (e.g. to detect Stale NFS Handles)")); + printf (" %s\n", "-M, --mountpoint"); + printf (" %s\n", _("Display the (block) device instead of the mount point")); + printf (" %s\n", "-m, --megabytes"); + printf (" %s\n", _("Same as '--units MB'")); + printf (" %s\n", "-A, --all"); + printf (" %s\n", _("Explicitly select all paths. This is equivalent to -R '.*'")); + printf (" %s\n", "-R, --eregi-path=PATH, --eregi-partition=PARTITION"); + printf (" %s\n", _("Case insensitive regular expression for path/partition (may be repeated)")); + printf (" %s\n", "-r, --ereg-path=PATH, --ereg-partition=PARTITION"); + printf (" %s\n", _("Regular expression for path or partition (may be repeated)")); + printf (" %s\n", "-I, --ignore-eregi-path=PATH, --ignore-eregi-partition=PARTITION"); + printf (" %s\n", _("Regular expression to ignore selected path/partition (case insensitive) (may be repeated)")); + printf (" %s\n", "-i, --ignore-ereg-path=PATH, --ignore-ereg-partition=PARTITION"); + printf (" %s\n", _("Regular expression to ignore selected path or partition (may be repeated)")); + printf (" %s\n", "--ignore-missing"); + printf (" %s\n", _("Return OK if no filesystem matches, filesystem does not exist or is inaccessible.")); + printf (" %s\n", _("(Provide this option before -p / -r / --ereg-path if used)")); + printf (UT_PLUG_TIMEOUT, DEFAULT_SOCKET_TIMEOUT); + printf (" %s\n", "-u, --units=STRING"); + printf (" %s\n", _("Choose bytes, kB, MB, GB, TB (default: MB)")); + printf (UT_VERBOSE); + printf (" %s\n", "-X, --exclude-type=TYPE_REGEX"); + printf (" %s\n", _("Ignore all filesystems of types matching given regex(7) (may be repeated)")); + printf (" %s\n", "-N, --include-type=TYPE_REGEX"); + printf (" %s\n", _("Check only filesystems where the type matches this given regex(7) (may be repeated)")); + + printf ("\n"); + printf ("%s\n", _("General usage hints:")); + printf (" %s\n", _("- Arguments are positional! \"-w 5 -c 1 -p /foo -w6 -c2 -p /bar\" is not the same as")); + printf (" %s\n", _("\"-w 5 -c 1 -p /bar w6 -c2 -p /foo\".")); + printf (" %s\n", _("- The syntax is broadly: \"{thresholds a} {paths a} -C {thresholds b} {thresholds b} ...\"")); + + + + printf ("\n"); + printf ("%s\n", _("Examples:")); + printf (" %s\n", "check_disk -w 10% -c 5% -p /tmp -p /var -C -w 100000 -c 50000 -p /"); + printf (" %s\n\n", _("Checks /tmp and /var at 10% and 5%, and / at 100MB and 50MB")); + printf (" %s\n", "check_disk -w 100 -c 50 -C -w 1000 -c 500 -g sidDATA -r '^/oracle/SID/data.*$'"); + printf (" %s\n", _("Checks all filesystems not matching -r at 100M and 50M. The fs matching the -r regex")); + printf (" %s\n\n", _("are grouped which means the freespace thresholds are applied to all disks together")); + printf (" %s\n", "check_disk -w 100 -c 50 -C -w 1000 -c 500 -p /foo -C -w 5% -c 3% -p /bar"); + printf (" %s\n", _("Checks /foo for 1000M/500M and /bar for 5/3%. All remaining volumes use 100M/50M")); + + printf (UT_SUPPORT); +} + + + +void +print_usage (void) +{ + printf ("%s\n", _("Usage:")); + printf (" %s {-w absolute_limit |-w percentage_limit%% | -W inode_percentage_limit } {-c absolute_limit|-c percentage_limit%% | -K inode_percentage_limit } {-p path | -x device}\n", progname); + printf ("[-C] [-E] [-e] [-f] [-g group ] [-k] [-l] [-M] [-m] [-R path ] [-r path ]\n"); + printf ("[-t timeout] [-u unit] [-v] [-X type_regex] [-N type]\n"); +} + +bool +stat_path (struct parameter_list *p) +{ + /* Stat entry to check that dir exists and is accessible */ + if (verbose >= 3) + printf("calling stat on %s\n", p->name); + if (stat (p->name, &stat_buf[0])) { + if (verbose >= 3) + printf("stat failed on %s\n", p->name); + if (ignore_missing == true) { + return false; + } else { + printf("DISK %s - ", _("CRITICAL")); + die (STATE_CRITICAL, _("%s %s: %s\n"), p->name, _("is not accessible"), strerror(errno)); + } + } + return true; +} + + +void +get_stats (struct parameter_list *p, struct fs_usage *fsp) { + struct parameter_list *p_list; + struct fs_usage tmpfsp; + int first = 1; + + if (p->group == NULL) { + get_path_stats(p,fsp); + } else { + /* find all group members */ + for (p_list = path_select_list; p_list; p_list=p_list->name_next) { +#ifdef __CYGWIN__ + if (strncmp(p_list->name, "/cygdrive/", 10) != 0) + continue; +#endif + if (p_list->group && ! (strcmp(p_list->group, p->group))) { + if (! stat_path(p_list)) + continue; + get_fs_usage (p_list->best_match->me_mountdir, p_list->best_match->me_devname, &tmpfsp); + get_path_stats(p_list, &tmpfsp); + if (verbose >= 3) + printf("Group %s: adding %lu blocks sized %lu, (%s) used_units=%lu free_units=%lu total_units=%lu mult=%lu\n", + p_list->group, + tmpfsp.fsu_blocks, + tmpfsp.fsu_blocksize, + p_list->best_match->me_mountdir, + p_list->dused_units, + p_list->dfree_units, + p_list->dtotal_units, + mult); + + /* prevent counting the first FS of a group twice since its parameter_list entry + * is used to carry the information of all file systems of the entire group */ + if (! first) { + p->total += p_list->total; + p->available += p_list->available; + p->available_to_root += p_list->available_to_root; + p->used += p_list->used; + + p->dused_units += p_list->dused_units; + p->dfree_units += p_list->dfree_units; + p->dtotal_units += p_list->dtotal_units; + p->inodes_total += p_list->inodes_total; + p->inodes_free += p_list->inodes_free; + p->inodes_free_to_root += p_list->inodes_free_to_root; + p->inodes_used += p_list->inodes_used; + } + first = 0; + } + if (verbose >= 3) + printf("Group %s now has: used_units=%lu free_units=%lu total_units=%lu fsu_blocksize=%lu mult=%lu\n", + p->group, + p->dused_units, + p->dfree_units, + p->dtotal_units, + tmpfsp.fsu_blocksize, + mult); + } + /* modify devname and mountdir for output */ + p->best_match->me_mountdir = p->best_match->me_devname = p->group; + } + /* finally calculate percentages for either plain FS or summed up group */ + p->dused_pct = calculate_percent( p->used, p->used + p->available ); /* used + available can never be > uintmax */ + p->dfree_pct = 100 - p->dused_pct; + p->dused_inodes_percent = calculate_percent(p->inodes_total - p->inodes_free, p->inodes_total); + p->dfree_inodes_percent = 100 - p->dused_inodes_percent; + +} + +void +get_path_stats (struct parameter_list *p, struct fs_usage *fsp) { + p->available = fsp->fsu_bavail; + p->available_to_root = fsp->fsu_bfree; + p->used = fsp->fsu_blocks - fsp->fsu_bfree; + if (freespace_ignore_reserved) { + /* option activated : we subtract the root-reserved space from the total */ + p->total = fsp->fsu_blocks - p->available_to_root + p->available; + } else { + /* default behaviour : take all the blocks into account */ + p->total = fsp->fsu_blocks; + } + + p->dused_units = p->used*fsp->fsu_blocksize/mult; + p->dfree_units = p->available*fsp->fsu_blocksize/mult; + p->dtotal_units = p->total*fsp->fsu_blocksize/mult; + /* Free file nodes. Not sure the workaround is required, but in case...*/ + p->inodes_free = fsp->fsu_ffree; + p->inodes_free_to_root = fsp->fsu_ffree; /* Free file nodes for root. */ + p->inodes_used = fsp->fsu_files - fsp->fsu_ffree; + if (freespace_ignore_reserved) { + /* option activated : we subtract the root-reserved inodes from the total */ + /* not all OS report fsp->fsu_favail, only the ones with statvfs syscall */ + /* for others, fsp->fsu_ffree == fsp->fsu_favail */ + p->inodes_total = fsp->fsu_files - p->inodes_free_to_root + p->inodes_free; + } else { + /* default behaviour : take all the inodes into account */ + p->inodes_total = fsp->fsu_files; + } + np_add_name(&seen, p->best_match->me_mountdir); +} |