usrdb.c revision 21673 
1/*
2 * Copyright (c) 1994 Christopher G. Demetriou
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *      This product includes software developed by Christopher G. Demetriou.
16 * 4. The name of the author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef LINT
32static char rcsid[] = "$FreeBSD: head/usr.sbin/sa/usrdb.c 21673 1997-01-14 07:20:47Z jkh $";
33#endif
34
35#include <sys/types.h>
36#include <sys/acct.h>
37#include <err.h>
38#include <errno.h>
39#include <fcntl.h>
40#include <stdio.h>
41#include <string.h>
42#include "extern.h"
43#include "pathnames.h"
44
45static int uid_compare __P((const DBT *, const DBT *));
46
47static DB	*usracct_db;
48
49int
50usracct_init()
51{
52	DB *saved_usracct_db;
53	BTREEINFO bti;
54	int error;
55
56	bzero(&bti, sizeof bti);
57	bti.compare = uid_compare;
58
59	usracct_db = dbopen(NULL, O_RDWR, 0, DB_BTREE, &bti);
60	if (usracct_db == NULL)
61		return (-1);
62
63	error = 0;
64	if (!iflag) {
65		DBT key, data;
66		int serr, nerr;
67
68		saved_usracct_db = dbopen(_PATH_USRACCT, O_RDONLY, 0, DB_BTREE,
69		    &bti);
70		if (saved_usracct_db == NULL) {
71			error = (errno == ENOENT) ? 0 : -1;
72			if (error)
73				warn("retrieving user accounting summary");
74			goto out;
75		}
76
77		serr = DB_SEQ(saved_usracct_db, &key, &data, R_FIRST);
78		if (serr < 0) {
79			warn("retrieving user accounting summary");
80			error = -1;
81			goto closeout;
82		}
83		while (serr == 0) {
84			nerr = DB_PUT(usracct_db, &key, &data, 0);
85			if (nerr < 0) {
86				warn("initializing user accounting stats");
87				error = -1;
88				break;
89			}
90
91			serr = DB_SEQ(saved_usracct_db, &key, &data, R_NEXT);
92			if (serr < 0) {
93				warn("retrieving user accounting summary");
94				error = -1;
95				break;
96			}
97		}
98
99closeout:
100		if (DB_CLOSE(saved_usracct_db) < 0) {
101			warn("closing user accounting summary");
102			error = -1;
103		}
104	}
105
106out:
107	if (error != 0)
108		usracct_destroy();
109	return (error);
110}
111
112void
113usracct_destroy()
114{
115	if (DB_CLOSE(usracct_db) < 0)
116		warn("destroying user accounting stats");
117}
118
119int
120usracct_add(ci)
121	const struct cmdinfo *ci;
122{
123	DBT key, data;
124	struct userinfo newui;
125	u_long uid;
126	int rv;
127
128	uid = ci->ci_uid;
129	key.data = &uid;
130	key.size = sizeof uid;
131
132	rv = DB_GET(usracct_db, &key, &data, 0);
133	if (rv < 0) {
134		warn("get key %d from user accounting stats", uid);
135		return (-1);
136	} else if (rv == 0) {	/* it's there; copy whole thing */
137		/* add the old data to the new data */
138		bcopy(data.data, &newui, data.size);
139		if (newui.ui_uid != uid) {
140			warnx("key %d != expected record number %d",
141			    newui.ui_uid, uid);
142			warnx("inconsistent user accounting stats");
143			return (-1);
144		}
145	} else {		/* it's not there; zero it and copy the key */
146		bzero(&newui, sizeof newui);
147		newui.ui_uid = ci->ci_uid;
148	}
149
150	newui.ui_calls += ci->ci_calls;
151	newui.ui_utime += ci->ci_utime;
152	newui.ui_stime += ci->ci_stime;
153	newui.ui_mem += ci->ci_mem;
154	newui.ui_io += ci->ci_io;
155
156	data.data = &newui;
157	data.size = sizeof newui;
158	rv = DB_PUT(usracct_db, &key, &data, 0);
159	if (rv < 0) {
160		warn("add key %d to user accounting stats", uid);
161		return (-1);
162	} else if (rv != 0) {
163		warnx("DB_PUT returned 1");
164		return (-1);
165	}
166
167	return (0);
168}
169
170int
171usracct_update()
172{
173	DB *saved_usracct_db;
174	DBT key, data;
175	BTREEINFO bti;
176	int error, serr, nerr;
177
178	bzero(&bti, sizeof bti);
179	bti.compare = uid_compare;
180
181	saved_usracct_db = dbopen(_PATH_USRACCT, O_RDWR|O_CREAT|O_TRUNC, 0644,
182	    DB_BTREE, &bti);
183	if (saved_usracct_db == NULL) {
184		warn("creating user accounting summary");
185		return (-1);
186	}
187
188	error = 0;
189
190	serr = DB_SEQ(usracct_db, &key, &data, R_FIRST);
191	if (serr < 0) {
192		warn("retrieving user accounting stats");
193		error = -1;
194	}
195	while (serr == 0) {
196		nerr = DB_PUT(saved_usracct_db, &key, &data, 0);
197		if (nerr < 0) {
198			warn("saving user accounting summary");
199			error = -1;
200			break;
201		}
202
203		serr = DB_SEQ(usracct_db, &key, &data, R_NEXT);
204		if (serr < 0) {
205			warn("retrieving user accounting stats");
206			error = -1;
207			break;
208		}
209	}
210
211	if (DB_SYNC(saved_usracct_db, 0) < 0) {
212		warn("syncing process accounting summary");
213		error = -1;
214	}
215	if (DB_CLOSE(saved_usracct_db) < 0) {
216		warn("closing process accounting summary");
217		error = -1;
218	}
219	return error;
220}
221
222void
223usracct_print()
224{
225	DBT key, data;
226	struct userinfo *ui;
227	double t;
228	int rv;
229
230	rv = DB_SEQ(usracct_db, &key, &data, R_FIRST);
231	if (rv < 0)
232		warn("retrieving user accounting stats");
233
234	while (rv == 0) {
235		ui = (struct userinfo *) data.data;
236
237		printf("%-8s %9qu ",
238		    user_from_uid(ui->ui_uid, 0), ui->ui_calls);
239
240		t = (double) (ui->ui_utime + ui->ui_stime) /
241		    (double) AHZ;
242		if (t < 0.0001)		/* kill divide by zero */
243			t = 0.0001;
244
245		printf("%12.2f%s ", t / 60.0, "cpu");
246
247		/* ui->ui_calls is always != 0 */
248		if (dflag)
249			printf("%12qu%s", ui->ui_io / ui->ui_calls, "avio");
250		else
251			printf("%12qu%s", ui->ui_io, "tio");
252
253		/* t is always >= 0.0001; see above */
254		if (kflag)
255			printf("%12qu%s", ui->ui_mem / t, "k");
256		else
257			printf("%12qu%s", ui->ui_mem, "k*sec");
258
259		printf("\n");
260
261		rv = DB_SEQ(usracct_db, &key, &data, R_NEXT);
262		if (rv < 0)
263			warn("retrieving user accounting stats");
264	}
265}
266
267static int
268uid_compare(k1, k2)
269	const DBT *k1, *k2;
270{
271	u_long d1, d2;
272
273	bcopy(k1->data, &d1, sizeof d1);
274	bcopy(k2->data, &d2, sizeof d2);
275
276	if (d1 < d2)
277		return -1;
278	else if (d1 == d2)
279		return 0;
280	else
281		return 1;
282}
283