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 #include <sys/param.h> 33 #include <sys/stat.h> 34 #include <sys/acct.h> 35 36 #include <ctype.h> 37 #include <err.h> 38 #include <errno.h> 39 #include <pwd.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include <time.h> 44 #include <unistd.h> 45 #include "pathnames.h" 46 47 /*XXX*/#include <inttypes.h> 48 49 time_t expand(u_int); 50 char *flagbits(int); 51 const char *getdev(dev_t); 52 int readrec_forward(FILE *f, struct acctv3 *av3); 53 int readrec_backward(FILE *f, struct acctv3 *av3); 54 int requested(char *[], struct acctv3 *); 55 static void usage(void); 56 57 #define AC_UTIME 1 /* user */ 58 #define AC_STIME 2 /* system */ 59 #define AC_ETIME 4 /* elapsed */ 60 #define AC_CTIME 8 /* user + system time, default */ 61 62 #define AC_BTIME 16 /* starting time */ 63 #define AC_FTIME 32 /* exit time (starting time + elapsed time )*/ 64 65 int 66 main(int argc, char *argv[]) 67 { 68 struct acctv3 ab; 69 char *p; 70 FILE *fp; 71 int (*readrec)(FILE *f, struct acctv3 *av3); 72 time_t t; 73 int ch, rv; 74 const char *acctfile, *format; 75 char buf[1024]; 76 int flags = 0; 77 78 acctfile = _PATH_ACCT; 79 format = NULL; 80 while ((ch = getopt(argc, argv, "f:usecSE")) != -1) 81 switch((char)ch) { 82 case 'f': 83 acctfile = optarg; 84 break; 85 86 case 'u': 87 flags |= AC_UTIME; /* user time */ 88 break; 89 case 's': 90 flags |= AC_STIME; /* system time */ 91 break; 92 case 'e': 93 flags |= AC_ETIME; /* elapsed time */ 94 break; 95 case 'c': 96 flags |= AC_CTIME; /* user + system time */ 97 break; 98 99 case 'S': 100 flags |= AC_BTIME; /* starting time */ 101 break; 102 case 'E': 103 /* exit time (starting time + elapsed time )*/ 104 flags |= AC_FTIME; 105 break; 106 107 case '?': 108 default: 109 usage(); 110 } 111 112 /* default user + system time and starting time */ 113 if (!flags) { 114 flags = AC_CTIME | AC_BTIME; 115 } 116 117 argc -= optind; 118 argv += optind; 119 120 if (argc > 0 && **argv == '+') { 121 format = *argv + 1; /* skip + */ 122 argc--; 123 argv++; 124 } 125 126 if (strcmp(acctfile, "-") == 0) { 127 fp = stdin; 128 readrec = readrec_forward; 129 } else { 130 /* Open the file. */ 131 if ((fp = fopen(acctfile, "r")) == NULL) 132 err(1, "could not open %s", acctfile); 133 if (fseek(fp, 0l, SEEK_END) == -1) 134 err(1, "seek to end of %s failed", acctfile); 135 readrec = readrec_backward; 136 } 137 138 while ((rv = readrec(fp, &ab)) == 1) { 139 for (p = &ab.ac_comm[0]; 140 p < &ab.ac_comm[AC_COMM_LEN] && *p; ++p) 141 if (!isprint(*p)) 142 *p = '?'; 143 144 if (*argv && !requested(argv, &ab)) 145 continue; 146 147 (void)printf("%-*.*s %-7s %-*s %-8s", 148 AC_COMM_LEN, AC_COMM_LEN, ab.ac_comm, 149 flagbits(ab.ac_flagx), 150 MAXLOGNAME - 1, user_from_uid(ab.ac_uid, 0), 151 getdev(ab.ac_tty)); 152 153 154 /* user + system time */ 155 if (flags & AC_CTIME) { 156 (void)printf(" %6.3f secs", 157 (ab.ac_utime + ab.ac_stime) / 1000000); 158 } 159 160 /* usr time */ 161 if (flags & AC_UTIME) { 162 (void)printf(" %6.3f us", ab.ac_utime / 1000000); 163 } 164 165 /* system time */ 166 if (flags & AC_STIME) { 167 (void)printf(" %6.3f sy", ab.ac_stime / 1000000); 168 } 169 170 /* elapsed time */ 171 if (flags & AC_ETIME) { 172 (void)printf(" %8.3f es", ab.ac_etime / 1000000); 173 } 174 175 /* starting time */ 176 if (flags & AC_BTIME) { 177 if (format != NULL) { 178 (void)strftime(buf, sizeof(buf), format, 179 localtime(&ab.ac_btime)); 180 (void)printf(" %s", buf); 181 } else 182 (void)printf(" %.19s", ctime(&ab.ac_btime)); 183 } 184 185 /* exit time (starting time + elapsed time )*/ 186 if (flags & AC_FTIME) { 187 t = ab.ac_btime; 188 t += (time_t)(ab.ac_etime / 1000000); 189 if (format != NULL) { 190 (void)strftime(buf, sizeof(buf), format, 191 localtime(&t)); 192 (void)printf(" %s", buf); 193 } else 194 (void)printf(" %.19s", ctime(&t)); 195 } 196 printf("\n"); 197 } 198 if (rv == EOF) 199 err(1, "read record from %s failed", acctfile); 200 201 if (fflush(stdout)) 202 err(1, "stdout"); 203 exit(0); 204 } 205 206 char * 207 flagbits(int f) 208 { 209 static char flags[20] = "-"; 210 char *p; 211 212 #define BIT(flag, ch) if (f & flag) *p++ = ch 213 214 p = flags + 1; 215 BIT(ASU, 'S'); 216 BIT(AFORK, 'F'); 217 BIT(ACOMPAT, 'C'); 218 BIT(ACORE, 'D'); 219 BIT(AXSIG, 'X'); 220 *p = '\0'; 221 return (flags); 222 } 223 224 int 225 requested(char *argv[], struct acctv3 *acp) 226 { 227 const char *p; 228 229 do { 230 p = user_from_uid(acp->ac_uid, 0); 231 if (!strcmp(p, *argv)) 232 return (1); 233 if ((p = getdev(acp->ac_tty)) && !strcmp(p, *argv)) 234 return (1); 235 if (!strncmp(acp->ac_comm, *argv, AC_COMM_LEN)) 236 return (1); 237 } while (*++argv); 238 return (0); 239 } 240 241 const char * 242 getdev(dev_t dev) 243 { 244 static dev_t lastdev = (dev_t)-1; 245 static const char *lastname; 246 247 if (dev == NODEV) /* Special case. */ 248 return ("__"); 249 if (dev == lastdev) /* One-element cache. */ 250 return (lastname); 251 lastdev = dev; 252 lastname = devname(dev, S_IFCHR); 253 return (lastname); 254 } 255 256 static void 257 usage(void) 258 { 259 (void)fprintf(stderr, 260 "usage: lastcomm [-EScesu] [-f file] [+format] [command ...] " 261 "[user ...] [terminal ...]\n"); 262 exit(1); 263 } 264