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22e155fc DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
a22c9f20 KB |
3 | * All rights reserved. |
4 | * | |
af359dea C |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
22e155fc DF |
32 | */ |
33 | ||
34 | #ifndef lint | |
35 | char copyright[] = | |
36 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
a22c9f20 | 38 | #endif /* not lint */ |
22e155fc | 39 | |
7f055d32 | 40 | #ifndef lint |
1c15e888 | 41 | static char sccsid[] = "@(#)lastcomm.c 5.11 (Berkeley) 6/1/90"; |
a22c9f20 | 42 | #endif /* not lint */ |
c7eeef87 BJ |
43 | |
44 | /* | |
45 | * last command | |
46 | */ | |
7f055d32 SL |
47 | #include <sys/param.h> |
48 | #include <sys/acct.h> | |
cb88b4d5 | 49 | #include <sys/file.h> |
40d69e19 | 50 | #include <sys/stat.h> |
7f055d32 SL |
51 | #include <utmp.h> |
52 | #include <struct.h> | |
53 | #include <ctype.h> | |
a22c9f20 | 54 | #include <stdio.h> |
0092fa3d | 55 | #include "pathnames.h" |
7f055d32 | 56 | |
cb88b4d5 | 57 | struct acct buf[DEV_BSIZE / sizeof (struct acct)]; |
c7eeef87 | 58 | |
cb88b4d5 | 59 | time_t expand(); |
7f055d32 | 60 | char *flagbits(); |
cb88b4d5 | 61 | char *getdev(); |
c7eeef87 | 62 | |
7f055d32 | 63 | main(argc, argv) |
956f1949 | 64 | int argc; |
7f055d32 | 65 | char *argv[]; |
c7eeef87 | 66 | { |
956f1949 KB |
67 | extern int optind; |
68 | extern char *optarg; | |
7f055d32 | 69 | register struct acct *acp; |
956f1949 | 70 | register int bn, cc; |
cb88b4d5 | 71 | struct stat sb; |
956f1949 | 72 | int ch, fd; |
ad8ec6f7 | 73 | char *acctfile, *ctime(), *strcpy(), *user_from_uid(); |
a41e3d24 | 74 | long lseek(); |
c7eeef87 | 75 | |
0092fa3d | 76 | acctfile = _PATH_ACCT; |
956f1949 KB |
77 | while ((ch = getopt(argc, argv, "f:")) != EOF) |
78 | switch((char)ch) { | |
79 | case 'f': | |
80 | acctfile = optarg; | |
81 | break; | |
82 | case '?': | |
83 | default: | |
84 | fputs("lastcomm [ -f file ]\n", stderr); | |
85 | exit(1); | |
86 | } | |
87 | argv += optind; | |
0092fa3d | 88 | |
956f1949 | 89 | fd = open(acctfile, O_RDONLY); |
cb88b4d5 | 90 | if (fd < 0) { |
956f1949 | 91 | perror(acctfile); |
7f055d32 | 92 | exit(1); |
c7eeef87 | 93 | } |
956f1949 | 94 | (void)fstat(fd, &sb); |
9d7a479b | 95 | setpassent(1); |
3b26b9c3 | 96 | for (bn = btodb(sb.st_size); bn >= 0; bn--) { |
a41e3d24 | 97 | (void)lseek(fd, (off_t)dbtob(bn), L_SET); |
cb88b4d5 SL |
98 | cc = read(fd, buf, DEV_BSIZE); |
99 | if (cc < 0) { | |
100 | perror("read"); | |
101 | break; | |
102 | } | |
103 | acp = buf + (cc / sizeof (buf[0])) - 1; | |
104 | for (; acp >= buf; acp--) { | |
105 | register char *cp; | |
8dc8d395 | 106 | time_t x; |
cb88b4d5 | 107 | |
a4e47cfd | 108 | if (acp->ac_comm[0] == '\0') |
956f1949 | 109 | (void)strcpy(acp->ac_comm, "?"); |
a4e47cfd RC |
110 | for (cp = &acp->ac_comm[0]; |
111 | cp < &acp->ac_comm[fldsiz(acct, ac_comm)] && *cp; | |
112 | cp++) | |
113 | if (!isascii(*cp) || iscntrl(*cp)) | |
cb88b4d5 | 114 | *cp = '?'; |
956f1949 | 115 | if (*argv && !ok(argv, acp)) |
7f055d32 | 116 | continue; |
8dc8d395 | 117 | x = expand(acp->ac_utime) + expand(acp->ac_stime); |
4bf06df2 | 118 | printf("%-*.*s %s %-*s %-*s %6.2f secs %.16s\n", |
ad8ec6f7 | 119 | fldsiz(acct, ac_comm), fldsiz(acct, ac_comm), |
a41e3d24 | 120 | acp->ac_comm, flagbits(acp->ac_flag), |
2f478083 | 121 | UT_NAMESIZE, user_from_uid(acp->ac_uid, 0), |
ad8ec6f7 | 122 | UT_LINESIZE, getdev(acp->ac_tty), |
891ad5df | 123 | x / (double)AHZ, ctime(&acp->ac_btime)); |
c7eeef87 BJ |
124 | } |
125 | } | |
126 | } | |
127 | ||
128 | time_t | |
129 | expand (t) | |
7f055d32 | 130 | unsigned t; |
c7eeef87 BJ |
131 | { |
132 | register time_t nt; | |
133 | ||
134 | nt = t & 017777; | |
135 | t >>= 13; | |
7f055d32 | 136 | while (t) { |
c7eeef87 BJ |
137 | t--; |
138 | nt <<= 3; | |
139 | } | |
140 | return (nt); | |
141 | } | |
142 | ||
583da166 RE |
143 | char * |
144 | flagbits(f) | |
7f055d32 | 145 | register int f; |
c7eeef87 | 146 | { |
583da166 | 147 | static char flags[20]; |
a22c9f20 | 148 | char *p, *strcpy(); |
583da166 | 149 | |
a22c9f20 KB |
150 | #define BIT(flag, ch) if (f & flag) *p++ = ch; |
151 | p = strcpy(flags, "- "); | |
7f055d32 SL |
152 | BIT(ASU, 'S'); |
153 | BIT(AFORK, 'F'); | |
154 | BIT(ACOMPAT, 'C'); | |
155 | BIT(ACORE, 'D'); | |
156 | BIT(AXSIG, 'X'); | |
7f055d32 | 157 | return (flags); |
583da166 RE |
158 | } |
159 | ||
956f1949 | 160 | ok(argv, acp) |
cb88b4d5 SL |
161 | register char *argv[]; |
162 | register struct acct *acp; | |
163 | { | |
a41e3d24 | 164 | register char *cp; |
ad8ec6f7 | 165 | char *user_from_uid(); |
cb88b4d5 | 166 | |
956f1949 | 167 | do { |
2f478083 | 168 | cp = user_from_uid(acp->ac_uid, 0); |
ad8ec6f7 KB |
169 | if (!strcmp(cp, *argv)) |
170 | return(1); | |
171 | if ((cp = getdev(acp->ac_tty)) && !strcmp(cp, *argv)) | |
172 | return(1); | |
173 | if (!strncmp(acp->ac_comm, *argv, fldsiz(acct, ac_comm))) | |
956f1949 KB |
174 | return(1); |
175 | } while (*++argv); | |
176 | return(0); | |
cb88b4d5 SL |
177 | } |
178 | ||
cb88b4d5 SL |
179 | #include <sys/dir.h> |
180 | ||
181 | #define N_DEVS 43 /* hash value for device names */ | |
182 | #define NDEVS 500 /* max number of file names in /dev */ | |
183 | ||
184 | struct devhash { | |
185 | dev_t dev_dev; | |
ad8ec6f7 | 186 | char dev_name [UT_LINESIZE + 1]; |
cb88b4d5 SL |
187 | struct devhash * dev_nxt; |
188 | }; | |
189 | struct devhash *dev_hash[N_DEVS]; | |
190 | struct devhash *dev_chain; | |
191 | #define HASH(d) (((int) d) % N_DEVS) | |
192 | ||
583da166 RE |
193 | setupdevs() |
194 | { | |
195 | register DIR * fd; | |
196 | register struct devhash * hashtab; | |
197 | register ndevs = NDEVS; | |
198 | struct direct * dp; | |
a41e3d24 | 199 | char *malloc(); |
583da166 | 200 | |
a41e3d24 | 201 | /*NOSTRICT*/ |
cb88b4d5 SL |
202 | hashtab = (struct devhash *)malloc(NDEVS * sizeof(struct devhash)); |
203 | if (hashtab == (struct devhash *)0) { | |
a41e3d24 KB |
204 | fputs("No mem for dev table\n", stderr); |
205 | return; | |
206 | } | |
0092fa3d KB |
207 | if ((fd = opendir(_PATH_DEV)) == NULL) { |
208 | perror(_PATH_DEV); | |
583da166 RE |
209 | return; |
210 | } | |
583da166 RE |
211 | while (dp = readdir(fd)) { |
212 | if (dp->d_ino == 0) | |
213 | continue; | |
583da166 RE |
214 | if (dp->d_name[0] != 't' && strcmp(dp->d_name, "console")) |
215 | continue; | |
ad8ec6f7 KB |
216 | (void)strncpy(hashtab->dev_name, dp->d_name, UT_LINESIZE); |
217 | hashtab->dev_name[UT_LINESIZE] = 0; | |
583da166 RE |
218 | hashtab->dev_nxt = dev_chain; |
219 | dev_chain = hashtab; | |
220 | hashtab++; | |
221 | if (--ndevs <= 0) | |
222 | break; | |
223 | } | |
224 | closedir(fd); | |
225 | } | |
226 | ||
227 | char * | |
cb88b4d5 | 228 | getdev(dev) |
7f055d32 | 229 | dev_t dev; |
583da166 RE |
230 | { |
231 | register struct devhash *hp, *nhp; | |
232 | struct stat statb; | |
7f055d32 | 233 | char name[fldsiz(devhash, dev_name) + 6]; |
583da166 RE |
234 | static dev_t lastdev = (dev_t) -1; |
235 | static char *lastname; | |
f4e5f824 | 236 | static int init = 0; |
a41e3d24 | 237 | char *strcpy(), *strcat(); |
583da166 RE |
238 | |
239 | if (dev == NODEV) | |
7f055d32 | 240 | return ("__"); |
583da166 | 241 | if (dev == lastdev) |
7f055d32 | 242 | return (lastname); |
cb88b4d5 SL |
243 | if (!init) { |
244 | setupdevs(); | |
245 | init++; | |
246 | } | |
583da166 RE |
247 | for (hp = dev_hash[HASH(dev)]; hp; hp = hp->dev_nxt) |
248 | if (hp->dev_dev == dev) { | |
249 | lastdev = dev; | |
7f055d32 | 250 | return (lastname = hp->dev_name); |
583da166 | 251 | } |
583da166 RE |
252 | for (hp = dev_chain; hp; hp = nhp) { |
253 | nhp = hp->dev_nxt; | |
ad8ec6f7 | 254 | (void)strcpy(name, _PATH_DEV); |
583da166 RE |
255 | strcat(name, hp->dev_name); |
256 | if (stat(name, &statb) < 0) /* name truncated usually */ | |
257 | continue; | |
258 | if ((statb.st_mode & S_IFMT) != S_IFCHR) | |
259 | continue; | |
260 | hp->dev_dev = statb.st_rdev; | |
261 | hp->dev_nxt = dev_hash[HASH(hp->dev_dev)]; | |
262 | dev_hash[HASH(hp->dev_dev)] = hp; | |
263 | if (hp->dev_dev == dev) { | |
264 | dev_chain = nhp; | |
265 | lastdev = dev; | |
7f055d32 | 266 | return (lastname = hp->dev_name); |
583da166 | 267 | } |
c7eeef87 | 268 | } |
583da166 | 269 | dev_chain = (struct devhash *) 0; |
7f055d32 SL |
270 | return ("??"); |
271 | } |