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 <errno.h> 55 #include <fcntl.h> 56 #include <grp.h> 57 #include <pwd.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <unistd.h> 62 #include "pathnames.h" 63 64 /*XXX*/#include <inttypes.h> 65 66 time_t expand(u_int); 67 char *flagbits(int); 68 const char *getdev(dev_t); 69 int readrec_forward(FILE *f, struct acctv2 *av2); 70 int readrec_backward(FILE *f, struct acctv2 *av2); 71 int requested(char *[], struct acctv2 *); 72 static void usage(void); 73 74 #define AC_UTIME 1 /* user */ 75 #define AC_STIME 2 /* system */ 76 #define AC_ETIME 4 /* elapsed */ 77 #define AC_CTIME 8 /* user + system time, default */ 78 79 #define AC_BTIME 16 /* starting time */ 80 #define AC_FTIME 32 /* exit time (starting time + elapsed time )*/ 81 82 int 83 main(int argc, char *argv[]) 84 { 85 struct acctv2 ab; 86 char *p; 87 FILE *fp; 88 int (*readrec)(FILE *f, struct acctv2 *av2); 89 time_t t; 90 int ch, rv; 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 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 (void)printf(" %.16s", ctime(&ab.ac_btime)); 187 } 188 189 /* exit time (starting time + elapsed time )*/ 190 if (flags & AC_FTIME) { 191 t = ab.ac_btime; 192 t += (time_t)(ab.ac_etime / 1000000); 193 (void)printf(" %.16s", ctime(&t)); 194 } 195 printf("\n"); 196 } 197 if (rv == EOF) 198 err(1, "read record from %s failed", acctfile); 199 200 if (fflush(stdout)) 201 err(1, "stdout"); 202 exit(0); 203 } 204 205 char * 206 flagbits(int f) 207 { 208 static char flags[20] = "-"; 209 char *p; 210 211 #define BIT(flag, ch) if (f & flag) *p++ = ch 212 213 p = flags + 1; 214 BIT(ASU, 'S'); 215 BIT(AFORK, 'F'); 216 BIT(ACOMPAT, 'C'); 217 BIT(ACORE, 'D'); 218 BIT(AXSIG, 'X'); 219 *p = '\0'; 220 return (flags); 221 } 222 223 int 224 requested(char *argv[], struct acctv2 *acp) 225 { 226 const char *p; 227 228 do { 229 p = user_from_uid(acp->ac_uid, 0); 230 if (!strcmp(p, *argv)) 231 return (1); 232 if ((p = getdev(acp->ac_tty)) && !strcmp(p, *argv)) 233 return (1); 234 if (!strncmp(acp->ac_comm, *argv, AC_COMM_LEN)) 235 return (1); 236 } while (*++argv); 237 return (0); 238 } 239 240 const char * 241 getdev(dev_t dev) 242 { 243 static dev_t lastdev = (dev_t)-1; 244 static const char *lastname; 245 246 if (dev == NODEV) /* Special case. */ 247 return ("__"); 248 if (dev == lastdev) /* One-element cache. */ 249 return (lastname); 250 lastdev = dev; 251 lastname = devname(dev, S_IFCHR); 252 return (lastname); 253 } 254 255 static void 256 usage(void) 257 { 258 (void)fprintf(stderr, 259 "usage: lastcomm [-EScesu] [-f file] [command ...] [user ...] [terminal ...]\n"); 260 exit(1); 261 } 262