1 /* 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1980, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef lint 33 static const char copyright[] = 34 "@(#) Copyright (c) 1980, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"; 36 #endif /* not lint */ 37 38 #ifndef lint 39 #endif /* not lint */ 40 #include <sys/cdefs.h> 41 #include <sys/param.h> 42 #include <sys/stat.h> 43 #include <sys/acct.h> 44 45 #include <ctype.h> 46 #include <err.h> 47 #include <errno.h> 48 #include <pwd.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <time.h> 53 #include <unistd.h> 54 #include "pathnames.h" 55 56 /*XXX*/#include <inttypes.h> 57 58 time_t expand(u_int); 59 char *flagbits(int); 60 const char *getdev(dev_t); 61 int readrec_forward(FILE *f, struct acctv3 *av3); 62 int readrec_backward(FILE *f, struct acctv3 *av3); 63 int requested(char *[], struct acctv3 *); 64 static void usage(void); 65 66 #define AC_UTIME 1 /* user */ 67 #define AC_STIME 2 /* system */ 68 #define AC_ETIME 4 /* elapsed */ 69 #define AC_CTIME 8 /* user + system time, default */ 70 71 #define AC_BTIME 16 /* starting time */ 72 #define AC_FTIME 32 /* exit time (starting time + elapsed time )*/ 73 74 int 75 main(int argc, char *argv[]) 76 { 77 struct acctv3 ab; 78 char *p; 79 FILE *fp; 80 int (*readrec)(FILE *f, struct acctv3 *av3); 81 time_t t; 82 int ch, rv; 83 const char *acctfile, *format; 84 char buf[1024]; 85 int flags = 0; 86 87 acctfile = _PATH_ACCT; 88 format = NULL; 89 while ((ch = getopt(argc, argv, "f:usecSE")) != -1) 90 switch((char)ch) { 91 case 'f': 92 acctfile = optarg; 93 break; 94 95 case 'u': 96 flags |= AC_UTIME; /* user time */ 97 break; 98 case 's': 99 flags |= AC_STIME; /* system time */ 100 break; 101 case 'e': 102 flags |= AC_ETIME; /* elapsed time */ 103 break; 104 case 'c': 105 flags |= AC_CTIME; /* user + system time */ 106 break; 107 108 case 'S': 109 flags |= AC_BTIME; /* starting time */ 110 break; 111 case 'E': 112 /* exit time (starting time + elapsed time )*/ 113 flags |= AC_FTIME; 114 break; 115 116 case '?': 117 default: 118 usage(); 119 } 120 121 /* default user + system time and starting time */ 122 if (!flags) { 123 flags = AC_CTIME | AC_BTIME; 124 } 125 126 argc -= optind; 127 argv += optind; 128 129 if (argc > 0 && **argv == '+') { 130 format = *argv + 1; /* skip + */ 131 argc--; 132 argv++; 133 } 134 135 if (strcmp(acctfile, "-") == 0) { 136 fp = stdin; 137 readrec = readrec_forward; 138 } else { 139 /* Open the file. */ 140 if ((fp = fopen(acctfile, "r")) == NULL) 141 err(1, "could not open %s", acctfile); 142 if (fseek(fp, 0l, SEEK_END) == -1) 143 err(1, "seek to end of %s failed", acctfile); 144 readrec = readrec_backward; 145 } 146 147 while ((rv = readrec(fp, &ab)) == 1) { 148 for (p = &ab.ac_comm[0]; 149 p < &ab.ac_comm[AC_COMM_LEN] && *p; ++p) 150 if (!isprint(*p)) 151 *p = '?'; 152 153 if (*argv && !requested(argv, &ab)) 154 continue; 155 156 (void)printf("%-*.*s %-7s %-*s %-8s", 157 AC_COMM_LEN, AC_COMM_LEN, ab.ac_comm, 158 flagbits(ab.ac_flagx), 159 MAXLOGNAME - 1, user_from_uid(ab.ac_uid, 0), 160 getdev(ab.ac_tty)); 161 162 163 /* user + system time */ 164 if (flags & AC_CTIME) { 165 (void)printf(" %6.3f secs", 166 (ab.ac_utime + ab.ac_stime) / 1000000); 167 } 168 169 /* usr time */ 170 if (flags & AC_UTIME) { 171 (void)printf(" %6.3f us", ab.ac_utime / 1000000); 172 } 173 174 /* system time */ 175 if (flags & AC_STIME) { 176 (void)printf(" %6.3f sy", ab.ac_stime / 1000000); 177 } 178 179 /* elapsed time */ 180 if (flags & AC_ETIME) { 181 (void)printf(" %8.3f es", ab.ac_etime / 1000000); 182 } 183 184 /* starting time */ 185 if (flags & AC_BTIME) { 186 if (format != NULL) { 187 (void)strftime(buf, sizeof(buf), format, 188 localtime(&ab.ac_btime)); 189 (void)printf(" %s", buf); 190 } else 191 (void)printf(" %.19s", ctime(&ab.ac_btime)); 192 } 193 194 /* exit time (starting time + elapsed time )*/ 195 if (flags & AC_FTIME) { 196 t = ab.ac_btime; 197 t += (time_t)(ab.ac_etime / 1000000); 198 if (format != NULL) { 199 (void)strftime(buf, sizeof(buf), format, 200 localtime(&t)); 201 (void)printf(" %s", buf); 202 } else 203 (void)printf(" %.19s", ctime(&t)); 204 } 205 printf("\n"); 206 } 207 if (rv == EOF) 208 err(1, "read record from %s failed", acctfile); 209 210 if (fflush(stdout)) 211 err(1, "stdout"); 212 exit(0); 213 } 214 215 char * 216 flagbits(int f) 217 { 218 static char flags[20] = "-"; 219 char *p; 220 221 #define BIT(flag, ch) if (f & flag) *p++ = ch 222 223 p = flags + 1; 224 BIT(ASU, 'S'); 225 BIT(AFORK, 'F'); 226 BIT(ACOMPAT, 'C'); 227 BIT(ACORE, 'D'); 228 BIT(AXSIG, 'X'); 229 *p = '\0'; 230 return (flags); 231 } 232 233 int 234 requested(char *argv[], struct acctv3 *acp) 235 { 236 const char *p; 237 238 do { 239 p = user_from_uid(acp->ac_uid, 0); 240 if (!strcmp(p, *argv)) 241 return (1); 242 if ((p = getdev(acp->ac_tty)) && !strcmp(p, *argv)) 243 return (1); 244 if (!strncmp(acp->ac_comm, *argv, AC_COMM_LEN)) 245 return (1); 246 } while (*++argv); 247 return (0); 248 } 249 250 const char * 251 getdev(dev_t dev) 252 { 253 static dev_t lastdev = (dev_t)-1; 254 static const char *lastname; 255 256 if (dev == NODEV) /* Special case. */ 257 return ("__"); 258 if (dev == lastdev) /* One-element cache. */ 259 return (lastname); 260 lastdev = dev; 261 lastname = devname(dev, S_IFCHR); 262 return (lastname); 263 } 264 265 static void 266 usage(void) 267 { 268 (void)fprintf(stderr, 269 "usage: lastcomm [-EScesu] [-f file] [+format] [command ...] " 270 "[user ...] [terminal ...]\n"); 271 exit(1); 272 } 273