Commit | Line | Data |
---|---|---|
7f055d32 | 1 | #ifndef lint |
a4e47cfd | 2 | static char *sccsid = "@(#)lastcomm.c 4.14 (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; | |
8dc8d395 | 50 | time_t x; |
cb88b4d5 | 51 | |
a4e47cfd | 52 | if (acp->ac_comm[0] == '\0') |
7f055d32 | 53 | strcpy(acp->ac_comm, "?"); |
a4e47cfd RC |
54 | for (cp = &acp->ac_comm[0]; |
55 | cp < &acp->ac_comm[fldsiz(acct, ac_comm)] && *cp; | |
56 | cp++) | |
57 | if (!isascii(*cp) || iscntrl(*cp)) | |
cb88b4d5 | 58 | *cp = '?'; |
8dc8d395 | 59 | if (argc > 1 && !ok(argc, argv, acp)) |
7f055d32 | 60 | continue; |
8dc8d395 | 61 | x = expand(acp->ac_utime) + expand(acp->ac_stime); |
891ad5df | 62 | printf("%-*s %s %-*s %-*s %6.2f secs %.16s\n", |
7f055d32 SL |
63 | fldsiz(acct, ac_comm), acp->ac_comm, |
64 | flagbits(acp->ac_flag), | |
cb88b4d5 SL |
65 | fldsiz(utmp, ut_name), getname(acp->ac_uid), |
66 | fldsiz(utmp, ut_line), getdev(acp->ac_tty), | |
891ad5df | 67 | x / (double)AHZ, ctime(&acp->ac_btime)); |
c7eeef87 BJ |
68 | } |
69 | } | |
70 | } | |
71 | ||
72 | time_t | |
73 | expand (t) | |
7f055d32 | 74 | unsigned t; |
c7eeef87 BJ |
75 | { |
76 | register time_t nt; | |
77 | ||
78 | nt = t & 017777; | |
79 | t >>= 13; | |
7f055d32 | 80 | while (t) { |
c7eeef87 BJ |
81 | t--; |
82 | nt <<= 3; | |
83 | } | |
84 | return (nt); | |
85 | } | |
86 | ||
583da166 RE |
87 | char * |
88 | flagbits(f) | |
7f055d32 | 89 | register int f; |
c7eeef87 | 90 | { |
583da166 RE |
91 | register int i = 0; |
92 | static char flags[20]; | |
93 | ||
7f055d32 SL |
94 | #define BIT(flag, ch) flags[i++] = (f & flag) ? ch : ' ' |
95 | BIT(ASU, 'S'); | |
96 | BIT(AFORK, 'F'); | |
97 | BIT(ACOMPAT, 'C'); | |
98 | BIT(ACORE, 'D'); | |
99 | BIT(AXSIG, 'X'); | |
583da166 | 100 | flags[i] = '\0'; |
7f055d32 | 101 | return (flags); |
583da166 RE |
102 | } |
103 | ||
cb88b4d5 SL |
104 | ok(argc, argv, acp) |
105 | register int argc; | |
106 | register char *argv[]; | |
107 | register struct acct *acp; | |
108 | { | |
109 | register int j; | |
110 | ||
111 | for (j = 1; j < argc; j++) | |
112 | if (strcmp(getname(acp->ac_uid), argv[j]) && | |
113 | strcmp(getdev(acp->ac_tty), argv[j]) && | |
a4e47cfd | 114 | strncmp(acp->ac_comm, argv[j], fldsiz(acct, ac_comm))) |
cb88b4d5 SL |
115 | break; |
116 | return (j == argc); | |
117 | } | |
118 | ||
119 | /* should be done with nameserver or database */ | |
120 | ||
121 | struct utmp utmp; | |
122 | ||
123 | #define NUID 2048 | |
124 | #define NMAX (sizeof (utmp.ut_name)) | |
125 | ||
126 | char names[NUID][NMAX+1]; | |
127 | char outrangename[NMAX+1]; | |
128 | int outrangeuid = -1; | |
129 | ||
130 | char * | |
131 | getname(uid) | |
132 | { | |
133 | register struct passwd *pw; | |
134 | static init; | |
135 | struct passwd *getpwent(); | |
136 | ||
137 | if (uid >= 0 && uid < NUID && names[uid][0]) | |
138 | return (&names[uid][0]); | |
139 | if (uid >= 0 && uid == outrangeuid) | |
140 | return (outrangename); | |
141 | if (init == 2) { | |
142 | if (uid < NUID) | |
143 | return (0); | |
144 | setpwent(); | |
145 | while (pw = getpwent()) { | |
146 | if (pw->pw_uid != uid) | |
147 | continue; | |
148 | outrangeuid = pw->pw_uid; | |
93b9cc72 | 149 | strncpy(outrangename, pw->pw_name, NMAX); |
cb88b4d5 SL |
150 | endpwent(); |
151 | return (outrangename); | |
152 | } | |
153 | endpwent(); | |
154 | return (0); | |
155 | } | |
156 | if (init == 0) | |
157 | setpwent(), init = 1; | |
158 | while (pw = getpwent()) { | |
159 | if (pw->pw_uid < 0 || pw->pw_uid >= NUID) { | |
160 | if (pw->pw_uid == uid) { | |
161 | outrangeuid = pw->pw_uid; | |
93b9cc72 | 162 | strncpy(outrangename, pw->pw_name, NMAX); |
cb88b4d5 SL |
163 | return (outrangename); |
164 | } | |
165 | continue; | |
166 | } | |
167 | if (names[pw->pw_uid][0]) | |
168 | continue; | |
169 | strncpy(names[pw->pw_uid], pw->pw_name, NMAX); | |
170 | if (pw->pw_uid == uid) | |
171 | return (&names[uid][0]); | |
172 | } | |
173 | init = 2; | |
174 | endpwent(); | |
175 | return (0); | |
176 | } | |
177 | ||
178 | #include <sys/dir.h> | |
179 | ||
180 | #define N_DEVS 43 /* hash value for device names */ | |
181 | #define NDEVS 500 /* max number of file names in /dev */ | |
182 | ||
183 | struct devhash { | |
184 | dev_t dev_dev; | |
185 | char dev_name [fldsiz(utmp, ut_line) + 1]; | |
186 | struct devhash * dev_nxt; | |
187 | }; | |
188 | struct devhash *dev_hash[N_DEVS]; | |
189 | struct devhash *dev_chain; | |
190 | #define HASH(d) (((int) d) % N_DEVS) | |
191 | ||
583da166 RE |
192 | setupdevs() |
193 | { | |
194 | register DIR * fd; | |
195 | register struct devhash * hashtab; | |
196 | register ndevs = NDEVS; | |
197 | struct direct * dp; | |
198 | ||
199 | if ((fd = opendir("/dev")) == NULL) { | |
200 | perror("/dev"); | |
201 | return; | |
202 | } | |
cb88b4d5 SL |
203 | hashtab = (struct devhash *)malloc(NDEVS * sizeof(struct devhash)); |
204 | if (hashtab == (struct devhash *)0) { | |
583da166 | 205 | fprintf(stderr, "No mem for dev table\n"); |
f4e5f824 | 206 | closedir(fd); |
583da166 RE |
207 | return; |
208 | } | |
583da166 RE |
209 | while (dp = readdir(fd)) { |
210 | if (dp->d_ino == 0) | |
211 | continue; | |
583da166 RE |
212 | if (dp->d_name[0] != 't' && strcmp(dp->d_name, "console")) |
213 | continue; | |
583da166 RE |
214 | strncpy(hashtab->dev_name, dp->d_name, fldsiz(utmp, ut_line)); |
215 | hashtab->dev_name[fldsiz(utmp, ut_line)] = 0; | |
216 | hashtab->dev_nxt = dev_chain; | |
217 | dev_chain = hashtab; | |
218 | hashtab++; | |
219 | if (--ndevs <= 0) | |
220 | break; | |
221 | } | |
222 | closedir(fd); | |
223 | } | |
224 | ||
225 | char * | |
cb88b4d5 | 226 | getdev(dev) |
7f055d32 | 227 | dev_t dev; |
583da166 RE |
228 | { |
229 | register struct devhash *hp, *nhp; | |
230 | struct stat statb; | |
7f055d32 | 231 | char name[fldsiz(devhash, dev_name) + 6]; |
583da166 RE |
232 | static dev_t lastdev = (dev_t) -1; |
233 | static char *lastname; | |
f4e5f824 | 234 | static int init = 0; |
583da166 RE |
235 | |
236 | if (dev == NODEV) | |
7f055d32 | 237 | return ("__"); |
583da166 | 238 | if (dev == lastdev) |
7f055d32 | 239 | return (lastname); |
cb88b4d5 SL |
240 | if (!init) { |
241 | setupdevs(); | |
242 | init++; | |
243 | } | |
583da166 RE |
244 | for (hp = dev_hash[HASH(dev)]; hp; hp = hp->dev_nxt) |
245 | if (hp->dev_dev == dev) { | |
246 | lastdev = dev; | |
7f055d32 | 247 | return (lastname = hp->dev_name); |
583da166 | 248 | } |
583da166 RE |
249 | for (hp = dev_chain; hp; hp = nhp) { |
250 | nhp = hp->dev_nxt; | |
251 | strcpy(name, "/dev/"); | |
252 | strcat(name, hp->dev_name); | |
253 | if (stat(name, &statb) < 0) /* name truncated usually */ | |
254 | continue; | |
255 | if ((statb.st_mode & S_IFMT) != S_IFCHR) | |
256 | continue; | |
257 | hp->dev_dev = statb.st_rdev; | |
258 | hp->dev_nxt = dev_hash[HASH(hp->dev_dev)]; | |
259 | dev_hash[HASH(hp->dev_dev)] = hp; | |
260 | if (hp->dev_dev == dev) { | |
261 | dev_chain = nhp; | |
262 | lastdev = dev; | |
7f055d32 | 263 | return (lastname = hp->dev_name); |
583da166 | 264 | } |
c7eeef87 | 265 | } |
583da166 | 266 | dev_chain = (struct devhash *) 0; |
7f055d32 SL |
267 | return ("??"); |
268 | } |