Commit | Line | Data |
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22e155fc DF |
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 | ||
7 | #ifndef lint | |
8 | char copyright[] = | |
9 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
10 | All rights reserved.\n"; | |
11 | #endif not lint | |
12 | ||
7f055d32 | 13 | #ifndef lint |
22e155fc DF |
14 | static char sccsid[] = "@(#)lastcomm.c 5.1 (Berkeley) %G%"; |
15 | #endif not lint | |
c7eeef87 BJ |
16 | |
17 | /* | |
18 | * last command | |
19 | */ | |
7f055d32 SL |
20 | #include <sys/param.h> |
21 | #include <sys/acct.h> | |
cb88b4d5 SL |
22 | #include <sys/file.h> |
23 | ||
24 | #include <stdio.h> | |
7f055d32 | 25 | #include <pwd.h> |
40d69e19 | 26 | #include <sys/stat.h> |
7f055d32 SL |
27 | #include <utmp.h> |
28 | #include <struct.h> | |
29 | #include <ctype.h> | |
30 | ||
cb88b4d5 | 31 | struct acct buf[DEV_BSIZE / sizeof (struct acct)]; |
c7eeef87 | 32 | |
cb88b4d5 | 33 | time_t expand(); |
7f055d32 | 34 | char *flagbits(); |
cb88b4d5 SL |
35 | char *getname(); |
36 | char *getdev(); | |
c7eeef87 | 37 | |
7f055d32 SL |
38 | main(argc, argv) |
39 | char *argv[]; | |
c7eeef87 | 40 | { |
cb88b4d5 | 41 | register int bn, cc; |
7f055d32 | 42 | register struct acct *acp; |
cb88b4d5 SL |
43 | int fd; |
44 | struct stat sb; | |
c7eeef87 | 45 | |
cb88b4d5 SL |
46 | fd = open("/usr/adm/acct", O_RDONLY); |
47 | if (fd < 0) { | |
7f055d32 SL |
48 | perror("/usr/adm/acct"); |
49 | exit(1); | |
c7eeef87 | 50 | } |
cb88b4d5 | 51 | fstat(fd, &sb); |
3b26b9c3 RC |
52 | for (bn = btodb(sb.st_size); bn >= 0; bn--) { |
53 | lseek(fd, dbtob(bn), L_SET); | |
cb88b4d5 SL |
54 | cc = read(fd, buf, DEV_BSIZE); |
55 | if (cc < 0) { | |
56 | perror("read"); | |
57 | break; | |
58 | } | |
59 | acp = buf + (cc / sizeof (buf[0])) - 1; | |
60 | for (; acp >= buf; acp--) { | |
61 | register char *cp; | |
8dc8d395 | 62 | time_t x; |
cb88b4d5 | 63 | |
a4e47cfd | 64 | if (acp->ac_comm[0] == '\0') |
7f055d32 | 65 | strcpy(acp->ac_comm, "?"); |
a4e47cfd RC |
66 | for (cp = &acp->ac_comm[0]; |
67 | cp < &acp->ac_comm[fldsiz(acct, ac_comm)] && *cp; | |
68 | cp++) | |
69 | if (!isascii(*cp) || iscntrl(*cp)) | |
cb88b4d5 | 70 | *cp = '?'; |
8dc8d395 | 71 | if (argc > 1 && !ok(argc, argv, acp)) |
7f055d32 | 72 | continue; |
8dc8d395 | 73 | x = expand(acp->ac_utime) + expand(acp->ac_stime); |
891ad5df | 74 | printf("%-*s %s %-*s %-*s %6.2f secs %.16s\n", |
7f055d32 SL |
75 | fldsiz(acct, ac_comm), acp->ac_comm, |
76 | flagbits(acp->ac_flag), | |
cb88b4d5 SL |
77 | fldsiz(utmp, ut_name), getname(acp->ac_uid), |
78 | fldsiz(utmp, ut_line), getdev(acp->ac_tty), | |
891ad5df | 79 | x / (double)AHZ, ctime(&acp->ac_btime)); |
c7eeef87 BJ |
80 | } |
81 | } | |
82 | } | |
83 | ||
84 | time_t | |
85 | expand (t) | |
7f055d32 | 86 | unsigned t; |
c7eeef87 BJ |
87 | { |
88 | register time_t nt; | |
89 | ||
90 | nt = t & 017777; | |
91 | t >>= 13; | |
7f055d32 | 92 | while (t) { |
c7eeef87 BJ |
93 | t--; |
94 | nt <<= 3; | |
95 | } | |
96 | return (nt); | |
97 | } | |
98 | ||
583da166 RE |
99 | char * |
100 | flagbits(f) | |
7f055d32 | 101 | register int f; |
c7eeef87 | 102 | { |
583da166 RE |
103 | register int i = 0; |
104 | static char flags[20]; | |
105 | ||
7f055d32 SL |
106 | #define BIT(flag, ch) flags[i++] = (f & flag) ? ch : ' ' |
107 | BIT(ASU, 'S'); | |
108 | BIT(AFORK, 'F'); | |
109 | BIT(ACOMPAT, 'C'); | |
110 | BIT(ACORE, 'D'); | |
111 | BIT(AXSIG, 'X'); | |
583da166 | 112 | flags[i] = '\0'; |
7f055d32 | 113 | return (flags); |
583da166 RE |
114 | } |
115 | ||
cb88b4d5 SL |
116 | ok(argc, argv, acp) |
117 | register int argc; | |
118 | register char *argv[]; | |
119 | register struct acct *acp; | |
120 | { | |
121 | register int j; | |
122 | ||
123 | for (j = 1; j < argc; j++) | |
124 | if (strcmp(getname(acp->ac_uid), argv[j]) && | |
125 | strcmp(getdev(acp->ac_tty), argv[j]) && | |
a4e47cfd | 126 | strncmp(acp->ac_comm, argv[j], fldsiz(acct, ac_comm))) |
cb88b4d5 SL |
127 | break; |
128 | return (j == argc); | |
129 | } | |
130 | ||
131 | /* should be done with nameserver or database */ | |
132 | ||
133 | struct utmp utmp; | |
134 | ||
135 | #define NUID 2048 | |
136 | #define NMAX (sizeof (utmp.ut_name)) | |
137 | ||
138 | char names[NUID][NMAX+1]; | |
139 | char outrangename[NMAX+1]; | |
140 | int outrangeuid = -1; | |
141 | ||
142 | char * | |
143 | getname(uid) | |
144 | { | |
145 | register struct passwd *pw; | |
146 | static init; | |
147 | struct passwd *getpwent(); | |
148 | ||
149 | if (uid >= 0 && uid < NUID && names[uid][0]) | |
150 | return (&names[uid][0]); | |
151 | if (uid >= 0 && uid == outrangeuid) | |
152 | return (outrangename); | |
153 | if (init == 2) { | |
154 | if (uid < NUID) | |
155 | return (0); | |
156 | setpwent(); | |
157 | while (pw = getpwent()) { | |
158 | if (pw->pw_uid != uid) | |
159 | continue; | |
160 | outrangeuid = pw->pw_uid; | |
93b9cc72 | 161 | strncpy(outrangename, pw->pw_name, NMAX); |
cb88b4d5 SL |
162 | endpwent(); |
163 | return (outrangename); | |
164 | } | |
165 | endpwent(); | |
166 | return (0); | |
167 | } | |
168 | if (init == 0) | |
169 | setpwent(), init = 1; | |
170 | while (pw = getpwent()) { | |
171 | if (pw->pw_uid < 0 || pw->pw_uid >= NUID) { | |
172 | if (pw->pw_uid == uid) { | |
173 | outrangeuid = pw->pw_uid; | |
93b9cc72 | 174 | strncpy(outrangename, pw->pw_name, NMAX); |
cb88b4d5 SL |
175 | return (outrangename); |
176 | } | |
177 | continue; | |
178 | } | |
179 | if (names[pw->pw_uid][0]) | |
180 | continue; | |
181 | strncpy(names[pw->pw_uid], pw->pw_name, NMAX); | |
182 | if (pw->pw_uid == uid) | |
183 | return (&names[uid][0]); | |
184 | } | |
185 | init = 2; | |
186 | endpwent(); | |
187 | return (0); | |
188 | } | |
189 | ||
190 | #include <sys/dir.h> | |
191 | ||
192 | #define N_DEVS 43 /* hash value for device names */ | |
193 | #define NDEVS 500 /* max number of file names in /dev */ | |
194 | ||
195 | struct devhash { | |
196 | dev_t dev_dev; | |
197 | char dev_name [fldsiz(utmp, ut_line) + 1]; | |
198 | struct devhash * dev_nxt; | |
199 | }; | |
200 | struct devhash *dev_hash[N_DEVS]; | |
201 | struct devhash *dev_chain; | |
202 | #define HASH(d) (((int) d) % N_DEVS) | |
203 | ||
583da166 RE |
204 | setupdevs() |
205 | { | |
206 | register DIR * fd; | |
207 | register struct devhash * hashtab; | |
208 | register ndevs = NDEVS; | |
209 | struct direct * dp; | |
210 | ||
211 | if ((fd = opendir("/dev")) == NULL) { | |
212 | perror("/dev"); | |
213 | return; | |
214 | } | |
cb88b4d5 SL |
215 | hashtab = (struct devhash *)malloc(NDEVS * sizeof(struct devhash)); |
216 | if (hashtab == (struct devhash *)0) { | |
583da166 | 217 | fprintf(stderr, "No mem for dev table\n"); |
f4e5f824 | 218 | closedir(fd); |
583da166 RE |
219 | return; |
220 | } | |
583da166 RE |
221 | while (dp = readdir(fd)) { |
222 | if (dp->d_ino == 0) | |
223 | continue; | |
583da166 RE |
224 | if (dp->d_name[0] != 't' && strcmp(dp->d_name, "console")) |
225 | continue; | |
583da166 RE |
226 | strncpy(hashtab->dev_name, dp->d_name, fldsiz(utmp, ut_line)); |
227 | hashtab->dev_name[fldsiz(utmp, ut_line)] = 0; | |
228 | hashtab->dev_nxt = dev_chain; | |
229 | dev_chain = hashtab; | |
230 | hashtab++; | |
231 | if (--ndevs <= 0) | |
232 | break; | |
233 | } | |
234 | closedir(fd); | |
235 | } | |
236 | ||
237 | char * | |
cb88b4d5 | 238 | getdev(dev) |
7f055d32 | 239 | dev_t dev; |
583da166 RE |
240 | { |
241 | register struct devhash *hp, *nhp; | |
242 | struct stat statb; | |
7f055d32 | 243 | char name[fldsiz(devhash, dev_name) + 6]; |
583da166 RE |
244 | static dev_t lastdev = (dev_t) -1; |
245 | static char *lastname; | |
f4e5f824 | 246 | static int init = 0; |
583da166 RE |
247 | |
248 | if (dev == NODEV) | |
7f055d32 | 249 | return ("__"); |
583da166 | 250 | if (dev == lastdev) |
7f055d32 | 251 | return (lastname); |
cb88b4d5 SL |
252 | if (!init) { |
253 | setupdevs(); | |
254 | init++; | |
255 | } | |
583da166 RE |
256 | for (hp = dev_hash[HASH(dev)]; hp; hp = hp->dev_nxt) |
257 | if (hp->dev_dev == dev) { | |
258 | lastdev = dev; | |
7f055d32 | 259 | return (lastname = hp->dev_name); |
583da166 | 260 | } |
583da166 RE |
261 | for (hp = dev_chain; hp; hp = nhp) { |
262 | nhp = hp->dev_nxt; | |
263 | strcpy(name, "/dev/"); | |
264 | strcat(name, hp->dev_name); | |
265 | if (stat(name, &statb) < 0) /* name truncated usually */ | |
266 | continue; | |
267 | if ((statb.st_mode & S_IFMT) != S_IFCHR) | |
268 | continue; | |
269 | hp->dev_dev = statb.st_rdev; | |
270 | hp->dev_nxt = dev_hash[HASH(hp->dev_dev)]; | |
271 | dev_hash[HASH(hp->dev_dev)] = hp; | |
272 | if (hp->dev_dev == dev) { | |
273 | dev_chain = nhp; | |
274 | lastdev = dev; | |
7f055d32 | 275 | return (lastname = hp->dev_name); |
583da166 | 276 | } |
c7eeef87 | 277 | } |
583da166 | 278 | dev_chain = (struct devhash *) 0; |
7f055d32 SL |
279 | return ("??"); |
280 | } |