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 #include "lastcomm.h"
15
16 /*
17 * lc_pacct() provides the functionality of lastcomm when applied to the basic
18 * SVR4 accounting file, /var/adm/pacct. Definitions for this accounting file
19 * format are given in <sys/acct.h>.
20 */
21
22 extern ulong_t expand(comp_t);
23
24 static int
ok(int argc,char * argv[],int index,struct acct * acp)25 ok(int argc, char *argv[], int index, struct acct *acp)
26 {
27 int j;
28
29 for (j = index; j < argc; j++)
30 if (strcmp(getname(acp->ac_uid), argv[j]) &&
31 strcmp(getdev(acp->ac_tty), argv[j]) &&
32 strncmp(acp->ac_comm, argv[j], fldsiz(acct, ac_comm)))
33 break;
34 return (j == argc);
35 }
36
37 int
lc_pacct(char * name,int argc,char * argv[],int index)38 lc_pacct(char *name, int argc, char *argv[], int index)
39 {
40 struct acct buf[NACCT];
41 int bn, cc;
42 struct acct *acp;
43 struct stat sb;
44 time_t t;
45 int fd;
46
47 if ((fd = open(name, O_RDONLY)) < 0) {
48 perror(name);
49 return (1);
50 }
51
52 (void) fstat(fd, &sb);
53
54 if (sb.st_size % sizeof (struct acct)) {
55 (void) fprintf(stderr, gettext("lastcomm: accounting file"
56 " is corrupted\n"));
57 return (1);
58 }
59
60 for (bn = ((unsigned)sb.st_size / BUF_SIZ) + 1; bn >= 0; bn--) {
61 if (lseek(fd, (unsigned)bn * BUF_SIZ, 0) == -1) {
62 perror("lseek");
63 return (1);
64 }
65 cc = read(fd, buf, BUF_SIZ);
66 if (cc < 0) {
67 perror("read");
68 return (1);
69 }
70 acp = buf + (cc / sizeof (buf[0])) - 1;
71 for (; acp >= buf; acp--) {
72 char *cp;
73 ulong_t x;
74
75 if (acp->ac_flag > 0100) {
76 (void) fprintf(stderr, gettext("lastcomm: "
77 "accounting file is corrupted\n"));
78 return (1);
79 }
80 if (acp->ac_comm[0] == '\0')
81 (void) strcpy(acp->ac_comm, "?");
82 for (cp = &acp->ac_comm[0];
83 cp < &acp->ac_comm[fldsiz(acct, ac_comm)] && *cp;
84 cp++)
85 if (!isascii(*cp) || iscntrl(*cp))
86 *cp = '?';
87 if (argc > index && !ok(argc, argv, index, acp))
88 continue;
89 x = expand(acp->ac_utime) + expand(acp->ac_stime);
90 t = acp->ac_btime;
91 (void) printf("%-*.*s %s %-*s %-*s %6.2f secs %.16s\n",
92 fldsiz(acct, ac_comm), fldsiz(acct, ac_comm),
93 acp->ac_comm,
94 flagbits(acp->ac_flag),
95 NMAX, getname(acp->ac_uid),
96 LMAX, getdev(acp->ac_tty),
97 x / (double)HZ, ctime(&t));
98 }
99 }
100 return (0);
101 }
102