1 /* 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 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. 32 */ 33 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1980, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)lastcomm.c 8.1 (Berkeley) 6/6/93"; 43 #endif 44 #endif /* not lint */ 45 #include <sys/cdefs.h> 46 __FBSDID("$FreeBSD$"); 47 48 #include <sys/param.h> 49 #include <sys/stat.h> 50 #include <sys/acct.h> 51 52 #include <ctype.h> 53 #include <err.h> 54 #include <fcntl.h> 55 #include <pwd.h> 56 #include <stdio.h> 57 #include <stdlib.h> 58 #include <string.h> 59 #include <unistd.h> 60 #include <utmp.h> 61 #include "pathnames.h" 62 63 /*XXX*/#include <inttypes.h> 64 65 time_t expand(u_int); 66 char *flagbits(int); 67 const char *getdev(dev_t); 68 int requested(char *[], struct acct *); 69 static void usage(void); 70 71 #define AC_UTIME 1 /* user */ 72 #define AC_STIME 2 /* system */ 73 #define AC_ETIME 4 /* elapsed */ 74 #define AC_CTIME 8 /* user + system time, default */ 75 76 #define AC_BTIME 16 /* starting time */ 77 #define AC_FTIME 32 /* exit time (starting time + elapsed time )*/ 78 79 #define AC_HZ ((double)AHZ) 80 81 int 82 main(int argc, char *argv[]) 83 { 84 char *p; 85 struct acct ab; 86 struct stat sb; 87 FILE *fp; 88 off_t size; 89 time_t t; 90 int ch; 91 const char *acctfile; 92 int flags = 0; 93 94 acctfile = _PATH_ACCT; 95 while ((ch = getopt(argc, argv, "f:usecSE")) != -1) 96 switch((char)ch) { 97 case 'f': 98 acctfile = optarg; 99 break; 100 101 case 'u': 102 flags |= AC_UTIME; /* user time */ 103 break; 104 case 's': 105 flags |= AC_STIME; /* system time */ 106 break; 107 case 'e': 108 flags |= AC_ETIME; /* elapsed time */ 109 break; 110 case 'c': 111 flags |= AC_CTIME; /* user + system time */ 112 break; 113 114 case 'S': 115 flags |= AC_BTIME; /* starting time */ 116 break; 117 case 'E': 118 /* exit time (starting time + elapsed time )*/ 119 flags |= AC_FTIME; 120 break; 121 122 case '?': 123 default: 124 usage(); 125 } 126 127 /* default user + system time and starting time */ 128 if (!flags) { 129 flags = AC_CTIME | AC_BTIME; 130 } 131 132 argc -= optind; 133 argv += optind; 134 135 if (strcmp(acctfile, "-") == 0) 136 fp = stdin; 137 else { 138 /* Open the file. */ 139 if ((fp = fopen(acctfile, "r")) == NULL || 140 fstat(fileno(fp), &sb)) 141 err(1, "could not open %s", acctfile); 142 143 /* 144 * Round off to integral number of accounting records, 145 * probably not necessary, but it doesn't hurt. 146 */ 147 size = sb.st_size - sb.st_size % sizeof(struct acct); 148 149 /* Check if any records to display. */ 150 if ((unsigned)size < sizeof(struct acct)) 151 exit(0); 152 } 153 154 do { 155 int rv; 156 157 if (fp != stdin) { 158 size -= sizeof(struct acct); 159 if (fseeko(fp, size, SEEK_SET) == -1) 160 err(1, "seek %s failed", acctfile); 161 } 162 163 if ((rv = fread(&ab, sizeof(struct acct), 1, fp)) != 1) { 164 if (feof(fp)) 165 break; 166 else 167 err(1, "read %s returned %d", acctfile, rv); 168 } 169 170 if (ab.ac_comm[0] == '\0') { 171 ab.ac_comm[0] = '?'; 172 ab.ac_comm[1] = '\0'; 173 } else 174 for (p = &ab.ac_comm[0]; 175 p < &ab.ac_comm[AC_COMM_LEN] && *p; ++p) 176 if (!isprint(*p)) 177 *p = '?'; 178 if (*argv && !requested(argv, &ab)) 179 continue; 180 181 (void)printf("%-*.*s %-7s %-*s %-*s", 182 AC_COMM_LEN, AC_COMM_LEN, ab.ac_comm, 183 flagbits(ab.ac_flag), 184 UT_NAMESIZE, user_from_uid(ab.ac_uid, 0), 185 UT_LINESIZE, getdev(ab.ac_tty)); 186 187 188 /* user + system time */ 189 if (flags & AC_CTIME) { 190 (void)printf(" %6.2f secs", 191 (expand(ab.ac_utime) + 192 expand(ab.ac_stime))/AC_HZ); 193 } 194 195 /* usr time */ 196 if (flags & AC_UTIME) { 197 (void)printf(" %6.2f us", expand(ab.ac_utime)/AC_HZ); 198 } 199 200 /* system time */ 201 if (flags & AC_STIME) { 202 (void)printf(" %6.2f sy", expand(ab.ac_stime)/AC_HZ); 203 } 204 205 /* elapsed time */ 206 if (flags & AC_ETIME) { 207 (void)printf(" %8.2f es", expand(ab.ac_etime)/AC_HZ); 208 } 209 210 /* starting time */ 211 if (flags & AC_BTIME) { 212 (void)printf(" %.16s", ctime(&ab.ac_btime)); 213 } 214 215 /* exit time (starting time + elapsed time )*/ 216 if (flags & AC_FTIME) { 217 t = ab.ac_btime; 218 t += (time_t)(expand(ab.ac_etime)/AC_HZ); 219 (void)printf(" %.16s", ctime(&t)); 220 } 221 printf("\n"); 222 223 } while (size > 0); 224 exit(0); 225 } 226 227 time_t 228 expand(u_int t) 229 { 230 time_t nt; 231 232 nt = t & 017777; 233 t >>= 13; 234 while (t) { 235 t--; 236 nt <<= 3; 237 } 238 return (nt); 239 } 240 241 char * 242 flagbits(int f) 243 { 244 static char flags[20] = "-"; 245 char *p; 246 247 #define BIT(flag, ch) if (f & flag) *p++ = ch 248 249 p = flags + 1; 250 BIT(ASU, 'S'); 251 BIT(AFORK, 'F'); 252 BIT(ACOMPAT, 'C'); 253 BIT(ACORE, 'D'); 254 BIT(AXSIG, 'X'); 255 *p = '\0'; 256 return (flags); 257 } 258 259 int 260 requested(char *argv[], struct acct *acp) 261 { 262 const char *p; 263 264 do { 265 p = user_from_uid(acp->ac_uid, 0); 266 if (!strcmp(p, *argv)) 267 return (1); 268 if ((p = getdev(acp->ac_tty)) && !strcmp(p, *argv)) 269 return (1); 270 if (!strncmp(acp->ac_comm, *argv, AC_COMM_LEN)) 271 return (1); 272 } while (*++argv); 273 return (0); 274 } 275 276 const char * 277 getdev(dev_t dev) 278 { 279 static dev_t lastdev = (dev_t)-1; 280 static const char *lastname; 281 282 if (dev == NODEV) /* Special case. */ 283 return ("__"); 284 if (dev == lastdev) /* One-element cache. */ 285 return (lastname); 286 lastdev = dev; 287 lastname = devname(dev, S_IFCHR); 288 return (lastname); 289 } 290 291 static void 292 usage(void) 293 { 294 (void)fprintf(stderr, 295 "usage: lastcomm [-EScesu] [-f file] [command ...] [user ...] [terminal ...]\n"); 296 exit(1); 297 } 298