Commit | Line | Data |
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7f055d32 | 1 | #ifndef lint |
d702fdf6 | 2 | static char *sccsid = "@(#)lastcomm.c 4.11 (Berkeley) %G%"; |
7f055d32 | 3 | #endif |
c7eeef87 BJ |
4 | |
5 | /* | |
6 | * last command | |
7 | */ | |
7f055d32 SL |
8 | #include <sys/param.h> |
9 | #include <sys/acct.h> | |
cb88b4d5 SL |
10 | #include <sys/file.h> |
11 | ||
12 | #include <stdio.h> | |
7f055d32 | 13 | #include <pwd.h> |
40d69e19 | 14 | #include <sys/stat.h> |
7f055d32 SL |
15 | #include <utmp.h> |
16 | #include <struct.h> | |
17 | #include <ctype.h> | |
18 | ||
cb88b4d5 | 19 | struct acct buf[DEV_BSIZE / sizeof (struct acct)]; |
c7eeef87 | 20 | |
cb88b4d5 | 21 | time_t expand(); |
7f055d32 | 22 | char *flagbits(); |
cb88b4d5 SL |
23 | char *getname(); |
24 | char *getdev(); | |
c7eeef87 | 25 | |
7f055d32 SL |
26 | main(argc, argv) |
27 | char *argv[]; | |
c7eeef87 | 28 | { |
cb88b4d5 | 29 | register int bn, cc; |
7f055d32 | 30 | register struct acct *acp; |
cb88b4d5 SL |
31 | int fd; |
32 | struct stat sb; | |
c7eeef87 | 33 | |
cb88b4d5 SL |
34 | fd = open("/usr/adm/acct", O_RDONLY); |
35 | if (fd < 0) { | |
7f055d32 SL |
36 | perror("/usr/adm/acct"); |
37 | exit(1); | |
c7eeef87 | 38 | } |
cb88b4d5 | 39 | fstat(fd, &sb); |
3b26b9c3 RC |
40 | for (bn = btodb(sb.st_size); bn >= 0; bn--) { |
41 | lseek(fd, dbtob(bn), L_SET); | |
cb88b4d5 SL |
42 | cc = read(fd, buf, DEV_BSIZE); |
43 | if (cc < 0) { | |
44 | perror("read"); | |
45 | break; | |
46 | } | |
47 | acp = buf + (cc / sizeof (buf[0])) - 1; | |
48 | for (; acp >= buf; acp--) { | |
49 | register char *cp; | |
50 | time_t x = | |
51 | expand(acp->ac_utime) + expand(acp->ac_stime); | |
52 | ||
7f055d32 SL |
53 | acp->ac_comm[10] = '\0'; |
54 | if (*acp->ac_comm == '\0') | |
55 | strcpy(acp->ac_comm, "?"); | |
cb88b4d5 SL |
56 | for (cp = acp->ac_comm; *cp; cp++) |
57 | if (iscntrl(*cp)) | |
58 | *cp = '?'; | |
7f055d32 SL |
59 | if (!ok(argc, argv, acp) && argc != 1) |
60 | continue; | |
d702fdf6 | 61 | printf("%-*s %s %-*s %-*s %6.1f secs %.16s\n", |
7f055d32 SL |
62 | fldsiz(acct, ac_comm), acp->ac_comm, |
63 | flagbits(acp->ac_flag), | |
cb88b4d5 SL |
64 | fldsiz(utmp, ut_name), getname(acp->ac_uid), |
65 | fldsiz(utmp, ut_line), getdev(acp->ac_tty), | |
d702fdf6 | 66 | x / 64.0, ctime(&acp->ac_btime)); |
c7eeef87 BJ |
67 | } |
68 | } | |
69 | } | |
70 | ||
71 | time_t | |
72 | expand (t) | |
7f055d32 | 73 | unsigned t; |
c7eeef87 BJ |
74 | { |
75 | register time_t nt; | |
76 | ||
77 | nt = t & 017777; | |
78 | t >>= 13; | |
7f055d32 | 79 | while (t) { |
c7eeef87 BJ |
80 | t--; |
81 | nt <<= 3; | |
82 | } | |
83 | return (nt); | |
84 | } | |
85 | ||
583da166 RE |
86 | char * |
87 | flagbits(f) | |
7f055d32 | 88 | register int f; |
c7eeef87 | 89 | { |
583da166 RE |
90 | register int i = 0; |
91 | static char flags[20]; | |
92 | ||
7f055d32 SL |
93 | #define BIT(flag, ch) flags[i++] = (f & flag) ? ch : ' ' |
94 | BIT(ASU, 'S'); | |
95 | BIT(AFORK, 'F'); | |
96 | BIT(ACOMPAT, 'C'); | |
97 | BIT(ACORE, 'D'); | |
98 | BIT(AXSIG, 'X'); | |
583da166 | 99 | flags[i] = '\0'; |
7f055d32 | 100 | return (flags); |
583da166 RE |
101 | } |
102 | ||
cb88b4d5 SL |
103 | ok(argc, argv, acp) |
104 | register int argc; | |
105 | register char *argv[]; | |
106 | register struct acct *acp; | |
107 | { | |
108 | register int j; | |
109 | ||
110 | for (j = 1; j < argc; j++) | |
111 | if (strcmp(getname(acp->ac_uid), argv[j]) && | |
112 | strcmp(getdev(acp->ac_tty), argv[j]) && | |
113 | strcmp(acp->ac_comm, argv[j])) | |
114 | break; | |
115 | return (j == argc); | |
116 | } | |
117 | ||
118 | /* should be done with nameserver or database */ | |
119 | ||
120 | struct utmp utmp; | |
121 | ||
122 | #define NUID 2048 | |
123 | #define NMAX (sizeof (utmp.ut_name)) | |
124 | ||
125 | char names[NUID][NMAX+1]; | |
126 | char outrangename[NMAX+1]; | |
127 | int outrangeuid = -1; | |
128 | ||
129 | char * | |
130 | getname(uid) | |
131 | { | |
132 | register struct passwd *pw; | |
133 | static init; | |
134 | struct passwd *getpwent(); | |
135 | ||
136 | if (uid >= 0 && uid < NUID && names[uid][0]) | |
137 | return (&names[uid][0]); | |
138 | if (uid >= 0 && uid == outrangeuid) | |
139 | return (outrangename); | |
140 | if (init == 2) { | |
141 | if (uid < NUID) | |
142 | return (0); | |
143 | setpwent(); | |
144 | while (pw = getpwent()) { | |
145 | if (pw->pw_uid != uid) | |
146 | continue; | |
147 | outrangeuid = pw->pw_uid; | |
93b9cc72 | 148 | strncpy(outrangename, pw->pw_name, NMAX); |
cb88b4d5 SL |
149 | endpwent(); |
150 | return (outrangename); | |
151 | } | |
152 | endpwent(); | |
153 | return (0); | |
154 | } | |
155 | if (init == 0) | |
156 | setpwent(), init = 1; | |
157 | while (pw = getpwent()) { | |
158 | if (pw->pw_uid < 0 || pw->pw_uid >= NUID) { | |
159 | if (pw->pw_uid == uid) { | |
160 | outrangeuid = pw->pw_uid; | |
93b9cc72 | 161 | strncpy(outrangename, pw->pw_name, NMAX); |
cb88b4d5 SL |
162 | return (outrangename); |
163 | } | |
164 | continue; | |
165 | } | |
166 | if (names[pw->pw_uid][0]) | |
167 | continue; | |
168 | strncpy(names[pw->pw_uid], pw->pw_name, NMAX); | |
169 | if (pw->pw_uid == uid) | |
170 | return (&names[uid][0]); | |
171 | } | |
172 | init = 2; | |
173 | endpwent(); | |
174 | return (0); | |
175 | } | |
176 | ||
177 | #include <sys/dir.h> | |
178 | ||
179 | #define N_DEVS 43 /* hash value for device names */ | |
180 | #define NDEVS 500 /* max number of file names in /dev */ | |
181 | ||
182 | struct devhash { | |
183 | dev_t dev_dev; | |
184 | char dev_name [fldsiz(utmp, ut_line) + 1]; | |
185 | struct devhash * dev_nxt; | |
186 | }; | |
187 | struct devhash *dev_hash[N_DEVS]; | |
188 | struct devhash *dev_chain; | |
189 | #define HASH(d) (((int) d) % N_DEVS) | |
190 | ||
583da166 RE |
191 | setupdevs() |
192 | { | |
193 | register DIR * fd; | |
194 | register struct devhash * hashtab; | |
195 | register ndevs = NDEVS; | |
196 | struct direct * dp; | |
197 | ||
198 | if ((fd = opendir("/dev")) == NULL) { | |
199 | perror("/dev"); | |
200 | return; | |
201 | } | |
cb88b4d5 SL |
202 | hashtab = (struct devhash *)malloc(NDEVS * sizeof(struct devhash)); |
203 | if (hashtab == (struct devhash *)0) { | |
583da166 | 204 | fprintf(stderr, "No mem for dev table\n"); |
f4e5f824 | 205 | closedir(fd); |
583da166 RE |
206 | return; |
207 | } | |
583da166 RE |
208 | while (dp = readdir(fd)) { |
209 | if (dp->d_ino == 0) | |
210 | continue; | |
583da166 RE |
211 | if (dp->d_name[0] != 't' && strcmp(dp->d_name, "console")) |
212 | continue; | |
583da166 RE |
213 | strncpy(hashtab->dev_name, dp->d_name, fldsiz(utmp, ut_line)); |
214 | hashtab->dev_name[fldsiz(utmp, ut_line)] = 0; | |
215 | hashtab->dev_nxt = dev_chain; | |
216 | dev_chain = hashtab; | |
217 | hashtab++; | |
218 | if (--ndevs <= 0) | |
219 | break; | |
220 | } | |
221 | closedir(fd); | |
222 | } | |
223 | ||
224 | char * | |
cb88b4d5 | 225 | getdev(dev) |
7f055d32 | 226 | dev_t dev; |
583da166 RE |
227 | { |
228 | register struct devhash *hp, *nhp; | |
229 | struct stat statb; | |
7f055d32 | 230 | char name[fldsiz(devhash, dev_name) + 6]; |
583da166 RE |
231 | static dev_t lastdev = (dev_t) -1; |
232 | static char *lastname; | |
f4e5f824 | 233 | static int init = 0; |
583da166 RE |
234 | |
235 | if (dev == NODEV) | |
7f055d32 | 236 | return ("__"); |
583da166 | 237 | if (dev == lastdev) |
7f055d32 | 238 | return (lastname); |
cb88b4d5 SL |
239 | if (!init) { |
240 | setupdevs(); | |
241 | init++; | |
242 | } | |
583da166 RE |
243 | for (hp = dev_hash[HASH(dev)]; hp; hp = hp->dev_nxt) |
244 | if (hp->dev_dev == dev) { | |
245 | lastdev = dev; | |
7f055d32 | 246 | return (lastname = hp->dev_name); |
583da166 | 247 | } |
583da166 RE |
248 | for (hp = dev_chain; hp; hp = nhp) { |
249 | nhp = hp->dev_nxt; | |
250 | strcpy(name, "/dev/"); | |
251 | strcat(name, hp->dev_name); | |
252 | if (stat(name, &statb) < 0) /* name truncated usually */ | |
253 | continue; | |
254 | if ((statb.st_mode & S_IFMT) != S_IFCHR) | |
255 | continue; | |
256 | hp->dev_dev = statb.st_rdev; | |
257 | hp->dev_nxt = dev_hash[HASH(hp->dev_dev)]; | |
258 | dev_hash[HASH(hp->dev_dev)] = hp; | |
259 | if (hp->dev_dev == dev) { | |
260 | dev_chain = nhp; | |
261 | lastdev = dev; | |
7f055d32 | 262 | return (lastname = hp->dev_name); |
583da166 | 263 | } |
c7eeef87 | 264 | } |
583da166 | 265 | dev_chain = (struct devhash *) 0; |
7f055d32 SL |
266 | return ("??"); |
267 | } |