Commit | Line | Data |
---|---|---|
c7eeef87 BJ |
1 | static char *sccsid = "@(#)lastcomm.c 4.1 (Berkeley) %G%"; |
2 | # | |
3 | ||
4 | /* | |
5 | * last command | |
6 | */ | |
7 | ||
8 | # include <stdio.h> | |
9 | # include <sys/types.h> | |
10 | # include <sys/acct.h> | |
11 | # include <signal.h> | |
12 | # include <pwd.h> | |
13 | # include <stat.h> | |
14 | ||
15 | # define N_USER 1000 | |
16 | ||
17 | struct acct acct_buff [BUFSIZ / sizeof (struct acct)]; | |
18 | ||
19 | char yes = 1, | |
20 | no = 0, | |
21 | ||
22 | user_list [1000][9]; | |
23 | ||
24 | time_t expand (); | |
25 | ||
26 | struct passwd | |
27 | *passwd, | |
28 | *getpwent (); | |
29 | ||
30 | struct stat stat_buff; | |
31 | ||
32 | main (argc, argv) | |
33 | char **argv; | |
34 | { | |
35 | char acct_desc, | |
36 | *p; | |
37 | ||
38 | long i, | |
39 | j, | |
40 | i_block, | |
41 | n_blocks, | |
42 | n_byte, | |
43 | n_entry; | |
44 | ||
45 | float x; | |
46 | ||
47 | /* | |
48 | * set up user names | |
49 | */ | |
50 | while (passwd = getpwent ()) | |
51 | { | |
52 | move (passwd->pw_name, user_list [passwd->pw_uid]); | |
53 | } | |
54 | ||
55 | acct_desc = open ("/usr/adm/acct", 0); | |
56 | if (acct_desc < 0) | |
57 | { | |
58 | perror ("/usr/adm/acct"); | |
59 | return; | |
60 | } | |
61 | fstat (acct_desc, &stat_buff); | |
62 | n_blocks = (stat_buff.st_size + BUFSIZ - 1) / BUFSIZ; | |
63 | ||
64 | /* | |
65 | * read one block's worth | |
66 | */ | |
67 | for (i_block = n_blocks - 1; i_block >= 0; i_block--) | |
68 | { | |
69 | lseek (acct_desc, i_block * BUFSIZ, 0); | |
70 | n_byte = read (acct_desc, acct_buff, BUFSIZ); | |
71 | n_entry = n_byte / sizeof acct_buff [0]; | |
72 | for (i = n_entry - 1; i >= 0; i--) | |
73 | { | |
74 | if (!*user_list [acct_buff [i].ac_uid]) continue; | |
75 | /* | |
76 | * get the times | |
77 | */ | |
78 | x = expand (acct_buff [i].ac_utime) | |
79 | + | |
80 | expand (acct_buff [i].ac_stime); | |
81 | /* | |
82 | * null terminate the command name | |
83 | */ | |
84 | acct_buff [i].ac_comm [10] = 0; | |
85 | /* | |
86 | * replace missing command names with question marks | |
87 | */ | |
88 | if (!*acct_buff [i].ac_comm) | |
89 | { | |
90 | move ("?", acct_buff [i].ac_comm); | |
91 | } | |
92 | /* | |
93 | * replace control characters with question marks | |
94 | */ | |
95 | for (p = acct_buff [i].ac_comm; *p; p++) | |
96 | { | |
97 | if (*p < '!' || '~' < *p) *p = '?'; | |
98 | } | |
99 | for (j = 1; j < argc; j++) | |
100 | { | |
101 | if | |
102 | ( | |
103 | equal (acct_buff [i].ac_comm, argv [j]) | |
104 | || | |
105 | equal | |
106 | ( | |
107 | user_list [acct_buff [i].ac_uid], | |
108 | argv [j] | |
109 | ) | |
110 | ) | |
111 | { | |
112 | break; | |
113 | } | |
114 | } | |
115 | if (argc == 1 || j != argc) | |
116 | { | |
117 | printf | |
118 | ( | |
119 | "%-10s %-8s %6.2f %.16s\n", | |
120 | acct_buff [i].ac_comm, | |
121 | user_list [acct_buff [i].ac_uid], | |
122 | x / 60.0, | |
123 | ctime (&acct_buff [i].ac_btime) | |
124 | ); | |
125 | } | |
126 | } | |
127 | } | |
128 | } | |
129 | ||
130 | time_t | |
131 | expand (t) | |
132 | unsigned t; | |
133 | { | |
134 | register time_t nt; | |
135 | ||
136 | nt = t & 017777; | |
137 | t >>= 13; | |
138 | while (t) | |
139 | { | |
140 | t--; | |
141 | nt <<= 3; | |
142 | } | |
143 | return (nt); | |
144 | } | |
145 | ||
146 | move (a, b) | |
147 | char *a, *b; | |
148 | { | |
149 | while (*b++ = *a++); | |
150 | } | |
151 | ||
152 | equal (a, b) | |
153 | char *a, *b; | |
154 | { | |
155 | for (;; a++, b++) | |
156 | { | |
157 | if (*a != *b) return no; | |
158 | if (!*a) return yes; | |
159 | } | |
160 | } |