1/*
2 * Copyright (c) 1980 Regents of the University of California.
3 * All rights reserved. The Berkeley software License Agreement
4 * specifies the terms and conditions for redistribution.
5 *
6 * Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T
7 * All rights reserved.
8 *
9 *
10 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
11 * Use is subject to license terms.
12 */
13
14#pragma ident	"%Z%%M%	%I%	%E% SMI"
15
16#include "lastcomm.h"
17
18/*
19 * lc_pacct() provides the functionality of lastcomm when applied to the basic
20 * SVR4 accounting file, /var/adm/pacct.  Definitions for this accounting file
21 * format are given in <sys/acct.h>.
22 */
23
24extern ulong_t expand(comp_t);
25
26static int
27ok(int argc, char *argv[], int index, struct acct *acp)
28{
29	int j;
30
31	for (j = index; j < argc; j++)
32		if (strcmp(getname(acp->ac_uid), argv[j]) &&
33		    strcmp(getdev(acp->ac_tty), argv[j]) &&
34		    strncmp(acp->ac_comm, argv[j], fldsiz(acct, ac_comm)))
35			break;
36	return (j == argc);
37}
38
39int
40lc_pacct(char *name, int argc, char *argv[], int index)
41{
42	struct acct buf[NACCT];
43	int bn, cc;
44	struct acct *acp;
45	struct stat sb;
46	time_t t;
47	int fd;
48
49	if ((fd = open(name, O_RDONLY)) < 0) {
50		perror(name);
51		return (1);
52	}
53
54	(void) fstat(fd, &sb);
55
56	if (sb.st_size % sizeof (struct acct)) {
57		(void) fprintf(stderr, gettext("lastcomm: accounting file"
58		    " is corrupted\n"));
59		return (1);
60	}
61
62	for (bn = ((unsigned)sb.st_size / BUF_SIZ) + 1; bn >= 0; bn--) {
63		if (lseek(fd, (unsigned)bn * BUF_SIZ, 0) == -1) {
64			perror("lseek");
65			return (1);
66		}
67		cc = read(fd, buf, BUF_SIZ);
68		if (cc < 0) {
69			perror("read");
70			return (1);
71		}
72		acp = buf + (cc / sizeof (buf[0])) - 1;
73		for (; acp >= buf; acp--) {
74			char *cp;
75			ulong_t x;
76
77			if (acp->ac_flag > 0100) {
78				(void) fprintf(stderr, gettext("lastcomm: "
79				    "accounting file is corrupted\n"));
80				return (1);
81			}
82			if (acp->ac_comm[0] == '\0')
83				(void) strcpy(acp->ac_comm, "?");
84			for (cp = &acp->ac_comm[0];
85			    cp < &acp->ac_comm[fldsiz(acct, ac_comm)] && *cp;
86			    cp++)
87				if (!isascii(*cp) || iscntrl(*cp))
88					*cp = '?';
89			if (argc > index && !ok(argc, argv, index, acp))
90				continue;
91			x = expand(acp->ac_utime) + expand(acp->ac_stime);
92			t = acp->ac_btime;
93			(void) printf("%-*.*s %s %-*s %-*s %6.2f secs %.16s\n",
94			    fldsiz(acct, ac_comm), fldsiz(acct, ac_comm),
95			    acp->ac_comm,
96			    flagbits(acp->ac_flag),
97			    NMAX, getname(acp->ac_uid),
98			    LMAX, getdev(acp->ac_tty),
99			    x / (double)HZ, ctime(&t));
100		}
101	}
102	return (0);
103}
104