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bb6e8ca3 | 1 | /* Copyright (c) 1998, 2003, 2004, 2005 Free Software Foundation, Inc. |
d67281a7 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1998. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
d67281a7 UD |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
d67281a7 | 14 | |
41bdb6e2 AJ |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
d67281a7 | 19 | |
67479a70 UD |
20 | #include <errno.h> |
21 | #include <error.h> | |
a95a08b4 | 22 | #include <inttypes.h> |
67479a70 | 23 | #include <langinfo.h> |
d67281a7 UD |
24 | #include <stdio.h> |
25 | #include <stdlib.h> | |
67479a70 | 26 | #include <string.h> |
d67281a7 | 27 | #include <unistd.h> |
4360eafd | 28 | #include <libintl.h> |
67479a70 | 29 | |
d67281a7 | 30 | #include "nscd.h" |
67479a70 | 31 | #include "dbg_log.h" |
74a30a58 UD |
32 | #include "selinux.h" |
33 | #ifdef HAVE_SELINUX | |
34 | # include <selinux/selinux.h> | |
35 | # include <selinux/avc.h> | |
36 | #endif /* HAVE_SELINUX */ | |
37 | ||
67479a70 UD |
38 | |
39 | /* We use this to make sure the receiver is the same. */ | |
40 | static const char compilation[21] = __DATE__ " " __TIME__; | |
41 | ||
42 | /* Statistic data for one database. */ | |
43 | struct dbstat | |
44 | { | |
45 | int enabled; | |
46 | int check_file; | |
d13a3c57 UD |
47 | int shared; |
48 | int persistent; | |
67479a70 UD |
49 | size_t module; |
50 | ||
51 | unsigned long int postimeout; | |
52 | unsigned long int negtimeout; | |
53 | ||
a95a08b4 UD |
54 | size_t nentries; |
55 | size_t maxnentries; | |
56 | size_t maxnsearched; | |
57 | size_t datasize; | |
58 | size_t dataused; | |
c86e6aec | 59 | |
a95a08b4 UD |
60 | uintmax_t poshit; |
61 | uintmax_t neghit; | |
62 | uintmax_t posmiss; | |
63 | uintmax_t negmiss; | |
c86e6aec | 64 | |
a95a08b4 UD |
65 | uintmax_t rdlockdelayed; |
66 | uintmax_t wrlockdelayed; | |
67 | ||
68 | uintmax_t addfailed; | |
67479a70 UD |
69 | }; |
70 | ||
71 | /* Record for transmitting statistics. */ | |
72 | struct statdata | |
73 | { | |
74 | char version[sizeof (compilation)]; | |
75 | int debug_level; | |
c86e6aec | 76 | time_t runtime; |
a16e3585 | 77 | unsigned long int client_queued; |
67479a70 UD |
78 | int ndbs; |
79 | struct dbstat dbs[lastdb]; | |
74a30a58 UD |
80 | #ifdef HAVE_SELINUX |
81 | struct avc_cache_stats cstats; | |
82 | #endif /* HAVE_SELINUX */ | |
67479a70 UD |
83 | }; |
84 | ||
d67281a7 UD |
85 | |
86 | void | |
a95a08b4 | 87 | send_stats (int fd, struct database_dyn dbs[lastdb]) |
d67281a7 | 88 | { |
67479a70 UD |
89 | struct statdata data; |
90 | int cnt; | |
91 | ||
92 | memcpy (data.version, compilation, sizeof (compilation)); | |
93 | data.debug_level = debug_level; | |
c86e6aec | 94 | data.runtime = time (NULL) - start_time; |
a16e3585 | 95 | data.client_queued = client_queued; |
67479a70 UD |
96 | data.ndbs = lastdb; |
97 | ||
98 | for (cnt = 0; cnt < lastdb; ++cnt) | |
99 | { | |
aadd7d9d | 100 | memset (&data.dbs[cnt], 0, sizeof (data.dbs[cnt])); |
67479a70 UD |
101 | data.dbs[cnt].enabled = dbs[cnt].enabled; |
102 | data.dbs[cnt].check_file = dbs[cnt].check_file; | |
d13a3c57 UD |
103 | data.dbs[cnt].shared = dbs[cnt].shared; |
104 | data.dbs[cnt].persistent = dbs[cnt].persistent; | |
67479a70 UD |
105 | data.dbs[cnt].postimeout = dbs[cnt].postimeout; |
106 | data.dbs[cnt].negtimeout = dbs[cnt].negtimeout; | |
aadd7d9d UD |
107 | if (dbs[cnt].head != NULL) |
108 | { | |
109 | data.dbs[cnt].module = dbs[cnt].head->module; | |
110 | data.dbs[cnt].poshit = dbs[cnt].head->poshit; | |
111 | data.dbs[cnt].neghit = dbs[cnt].head->neghit; | |
112 | data.dbs[cnt].posmiss = dbs[cnt].head->posmiss; | |
113 | data.dbs[cnt].negmiss = dbs[cnt].head->negmiss; | |
114 | data.dbs[cnt].nentries = dbs[cnt].head->nentries; | |
115 | data.dbs[cnt].maxnentries = dbs[cnt].head->maxnentries; | |
116 | data.dbs[cnt].datasize = dbs[cnt].head->data_size; | |
117 | data.dbs[cnt].dataused = dbs[cnt].head->first_free; | |
118 | data.dbs[cnt].maxnsearched = dbs[cnt].head->maxnsearched; | |
119 | data.dbs[cnt].rdlockdelayed = dbs[cnt].head->rdlockdelayed; | |
120 | data.dbs[cnt].wrlockdelayed = dbs[cnt].head->wrlockdelayed; | |
121 | data.dbs[cnt].addfailed = dbs[cnt].head->addfailed; | |
122 | } | |
67479a70 | 123 | } |
d67281a7 | 124 | |
74a30a58 UD |
125 | if (selinux_enabled) |
126 | nscd_avc_cache_stats (&data.cstats); | |
127 | ||
a334319f | 128 | if (TEMP_FAILURE_RETRY (write (fd, &data, sizeof (data))) != sizeof (data)) |
d67281a7 | 129 | { |
67479a70 UD |
130 | char buf[256]; |
131 | dbg_log (_("cannot write statistics: %s"), | |
132 | strerror_r (errno, buf, sizeof (buf))); | |
d67281a7 | 133 | } |
67479a70 UD |
134 | } |
135 | ||
136 | ||
137 | int | |
138 | receive_print_stats (void) | |
139 | { | |
140 | struct statdata data; | |
141 | request_header req; | |
142 | ssize_t nbytes; | |
143 | int fd; | |
144 | int i; | |
a12ce44f | 145 | uid_t uid = getuid (); |
bb6e8ca3 UD |
146 | const char *yesstr = _("yes"); |
147 | const char *nostr = _("no"); | |
a12ce44f UD |
148 | |
149 | /* Find out whether there is another user but root allowed to | |
150 | request statistics. */ | |
151 | if (uid != 0) | |
152 | { | |
153 | /* User specified? */ | |
154 | if(stat_user == NULL || stat_uid != uid) | |
155 | { | |
156 | if (stat_user != NULL) | |
157 | error (EXIT_FAILURE, 0, | |
158 | _("Only root or %s is allowed to use this option!"), | |
159 | stat_user); | |
160 | else | |
161 | error (EXIT_FAILURE, 0, | |
162 | _("Only root is allowed to use this option!")); | |
163 | } | |
164 | } | |
d67281a7 | 165 | |
67479a70 UD |
166 | /* Open a socket to the running nscd. */ |
167 | fd = nscd_open_socket (); | |
168 | if (fd == -1) | |
169 | error (EXIT_FAILURE, 0, _("nscd not running!\n")); | |
170 | ||
171 | /* Send the request. */ | |
d67281a7 UD |
172 | req.version = NSCD_VERSION; |
173 | req.type = GETSTAT; | |
174 | req.key_len = 0; | |
a334319f | 175 | nbytes = TEMP_FAILURE_RETRY (write (fd, &req, sizeof (request_header))); |
d67281a7 UD |
176 | if (nbytes != sizeof (request_header)) |
177 | { | |
67479a70 UD |
178 | int err = errno; |
179 | close (fd); | |
180 | error (EXIT_FAILURE, err, _("write incomplete")); | |
d67281a7 UD |
181 | } |
182 | ||
67479a70 UD |
183 | /* Read as much data as we expect. */ |
184 | if (TEMP_FAILURE_RETRY (read (fd, &data, sizeof (data))) != sizeof (data) | |
185 | || (memcmp (data.version, compilation, sizeof (compilation)) != 0 | |
186 | /* Yes, this is an assignment! */ | |
c86e6aec | 187 | && (errno = EINVAL))) |
d67281a7 | 188 | { |
67479a70 UD |
189 | /* Not the right version. */ |
190 | int err = errno; | |
191 | close (fd); | |
192 | error (EXIT_FAILURE, err, _("cannot read statistics data")); | |
d67281a7 UD |
193 | } |
194 | ||
67479a70 UD |
195 | printf (_("nscd configuration:\n\n%15d server debug level\n"), |
196 | data.debug_level); | |
197 | ||
c86e6aec UD |
198 | /* We know that we can simply subtract time_t values. */ |
199 | unsigned long int diff = data.runtime; | |
200 | unsigned int ndays = 0; | |
201 | unsigned int nhours = 0; | |
202 | unsigned int nmins = 0; | |
203 | if (diff > 24 * 60 * 60) | |
204 | { | |
205 | ndays = diff / (24 * 60 * 60); | |
206 | diff %= 24 * 60 * 60; | |
207 | } | |
208 | if (diff > 60 * 60) | |
209 | { | |
210 | nhours = diff / (60 * 60); | |
211 | diff %= 60 * 60; | |
212 | } | |
213 | if (diff > 60) | |
214 | { | |
215 | nmins = diff / 60; | |
216 | diff %= 60; | |
217 | } | |
218 | if (ndays != 0) | |
219 | printf (_("%3ud %2uh %2um %2lus server runtime\n"), | |
220 | ndays, nhours, nmins, diff); | |
221 | else if (nhours != 0) | |
222 | printf (_(" %2uh %2um %2lus server runtime\n"), nhours, nmins, diff); | |
223 | else if (nmins != 0) | |
224 | printf (_(" %2um %2lus server runtime\n"), nmins, diff); | |
225 | else | |
226 | printf (_(" %2lus server runtime\n"), diff); | |
227 | ||
27e82856 UD |
228 | printf (_("%15d current number of threads\n" |
229 | "%15d maximum number of threads\n" | |
230 | "%15lu number of times clients had to wait\n" | |
4401d759 UD |
231 | "%15s paranoia mode enabled\n" |
232 | "%15lu restart internal\n"), | |
a334319f UD |
233 | nthreads, max_nthreads, data.client_queued, |
234 | paranoia ? yesstr : nostr, (unsigned long int) restart_interval); | |
a16e3585 | 235 | |
67479a70 UD |
236 | for (i = 0; i < lastdb; ++i) |
237 | { | |
238 | unsigned long int hit = data.dbs[i].poshit + data.dbs[i].neghit; | |
239 | unsigned long int all = hit + data.dbs[i].posmiss + data.dbs[i].negmiss; | |
27e82856 UD |
240 | const char *enabled = data.dbs[i].enabled ? yesstr : nostr; |
241 | const char *check_file = data.dbs[i].check_file ? yesstr : nostr; | |
242 | const char *shared = data.dbs[i].shared ? yesstr : nostr; | |
243 | const char *persistent = data.dbs[i].persistent ? yesstr : nostr; | |
67479a70 UD |
244 | |
245 | if (enabled[0] == '\0') | |
246 | /* The locale does not provide this information so we have to | |
247 | translate it ourself. Since we should avoid short translation | |
248 | terms we artifically increase the length. */ | |
4401d759 | 249 | enabled = data.dbs[i].enabled ? yesstr : nostr; |
67479a70 | 250 | if (check_file[0] == '\0') |
4401d759 | 251 | check_file = data.dbs[i].check_file ? yesstr : nostr; |
d13a3c57 | 252 | if (shared[0] == '\0') |
4401d759 | 253 | shared = data.dbs[i].shared ? yesstr : nostr; |
d13a3c57 | 254 | if (persistent[0] == '\0') |
4401d759 | 255 | persistent = data.dbs[i].persistent ? yesstr : nostr; |
67479a70 UD |
256 | |
257 | if (all == 0) | |
258 | /* If nothing happened so far report a 0% hit rate. */ | |
259 | all = 1; | |
260 | ||
261 | printf (_("\n%s cache:\n\n" | |
262 | "%15s cache is enabled\n" | |
d13a3c57 UD |
263 | "%15s cache is persistent\n" |
264 | "%15s cache is shared\n" | |
a95a08b4 UD |
265 | "%15zu suggested size\n" |
266 | "%15zu total data pool size\n" | |
267 | "%15zu used data pool size\n" | |
c86e6aec UD |
268 | "%15lu seconds time to live for positive entries\n" |
269 | "%15lu seconds time to live for negative entries\n" | |
a95a08b4 UD |
270 | "%15" PRIuMAX " cache hits on positive entries\n" |
271 | "%15" PRIuMAX " cache hits on negative entries\n" | |
272 | "%15" PRIuMAX " cache misses on positive entries\n" | |
273 | "%15" PRIuMAX " cache misses on negative entries\n" | |
c86e6aec | 274 | "%15lu%% cache hit rate\n" |
a95a08b4 UD |
275 | "%15zu current number of cached values\n" |
276 | "%15zu maximum number of cached values\n" | |
277 | "%15zu maximum chain length searched\n" | |
278 | "%15" PRIuMAX " number of delays on rdlock\n" | |
279 | "%15" PRIuMAX " number of delays on wrlock\n" | |
280 | "%15" PRIuMAX " memory allocations failed\n" | |
67479a70 | 281 | "%15s check /etc/%s for changes\n"), |
d13a3c57 | 282 | dbnames[i], enabled, persistent, shared, |
67479a70 | 283 | data.dbs[i].module, |
a95a08b4 | 284 | data.dbs[i].datasize, data.dbs[i].dataused, |
67479a70 UD |
285 | data.dbs[i].postimeout, data.dbs[i].negtimeout, |
286 | data.dbs[i].poshit, data.dbs[i].neghit, | |
287 | data.dbs[i].posmiss, data.dbs[i].negmiss, | |
288 | (100 * hit) / all, | |
c86e6aec UD |
289 | data.dbs[i].nentries, data.dbs[i].maxnentries, |
290 | data.dbs[i].maxnsearched, | |
291 | data.dbs[i].rdlockdelayed, | |
a95a08b4 UD |
292 | data.dbs[i].wrlockdelayed, |
293 | data.dbs[i].addfailed, check_file, dbnames[i]); | |
67479a70 UD |
294 | } |
295 | ||
74a30a58 UD |
296 | if (selinux_enabled) |
297 | nscd_avc_print_stats (&data.cstats); | |
298 | ||
67479a70 UD |
299 | close (fd); |
300 | ||
301 | exit (0); | |
d67281a7 | 302 | } |