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 <utmp.h> 63 #include "pathnames.h" 64 65 /*XXX*/#include <inttypes.h> 66 67 time_t expand(u_int); 68 char *flagbits(int); 69 const char *getdev(dev_t); 70 int readrec_forward(FILE *f, struct acctv2 *av2); 71 int readrec_backward(FILE *f, struct acctv2 *av2); 72 int requested(char *[], struct acctv2 *); 73 static void usage(void); 74 75 #define AC_UTIME 1 /* user */ 76 #define AC_STIME 2 /* system */ 77 #define AC_ETIME 4 /* elapsed */ 78 #define AC_CTIME 8 /* user + system time, default */ 79 80 #define AC_BTIME 16 /* starting time */ 81 #define AC_FTIME 32 /* exit time (starting time + elapsed time )*/ 82 83 int 84 main(int argc, char *argv[]) 85 { 86 struct acctv2 ab; 87 char *p; 88 FILE *fp; 89 int (*readrec)(FILE *f, struct acctv2 *av2); 90 time_t t; 91 int ch, rv; 92 const char *acctfile; 93 int flags = 0; 94 95 acctfile = _PATH_ACCT; 96 while ((ch = getopt(argc, argv, "f:usecSE")) != -1) 97 switch((char)ch) { 98 case 'f': 99 acctfile = optarg; 100 break; 101 102 case 'u': 103 flags |= AC_UTIME; /* user time */ 104 break; 105 case 's': 106 flags |= AC_STIME; /* system time */ 107 break; 108 case 'e': 109 flags |= AC_ETIME; /* elapsed time */ 110 break; 111 case 'c': 112 flags |= AC_CTIME; /* user + system time */ 113 break; 114 115 case 'S': 116 flags |= AC_BTIME; /* starting time */ 117 break; 118 case 'E': 119 /* exit time (starting time + elapsed time )*/ 120 flags |= AC_FTIME; 121 break; 122 123 case '?': 124 default: 125 usage(); 126 } 127 128 /* default user + system time and starting time */ 129 if (!flags) { 130 flags = AC_CTIME | AC_BTIME; 131 } 132 133 argc -= optind; 134 argv += optind; 135 136 if (strcmp(acctfile, "-") == 0) { 137 fp = stdin; 138 readrec = readrec_forward; 139 } else { 140 /* Open the file. */ 141 if ((fp = fopen(acctfile, "r")) == NULL) 142 err(1, "could not open %s", acctfile); 143 if (fseek(fp, 0l, SEEK_END) == -1) 144 err(1, "seek to end of %s failed", acctfile); 145 readrec = readrec_backward; 146 } 147 148 while ((rv = readrec(fp, &ab)) == 1) { 149 for (p = &ab.ac_comm[0]; 150 p < &ab.ac_comm[AC_COMM_LEN] && *p; ++p) 151 if (!isprint(*p)) 152 *p = '?'; 153 154 if (*argv && !requested(argv, &ab)) 155 continue; 156 157 (void)printf("%-*.*s %-7s %-*s %-*s", 158 AC_COMM_LEN, AC_COMM_LEN, ab.ac_comm, 159 flagbits(ab.ac_flagx), 160 UT_NAMESIZE, user_from_uid(ab.ac_uid, 0), 161 UT_LINESIZE, getdev(ab.ac_tty)); 162 163 164 /* user + system time */ 165 if (flags & AC_CTIME) { 166 (void)printf(" %6.3f secs", 167 (ab.ac_utime + ab.ac_stime) / 1000000); 168 } 169 170 /* usr time */ 171 if (flags & AC_UTIME) { 172 (void)printf(" %6.3f us", ab.ac_utime / 1000000); 173 } 174 175 /* system time */ 176 if (flags & AC_STIME) { 177 (void)printf(" %6.3f sy", ab.ac_stime / 1000000); 178 } 179 180 /* elapsed time */ 181 if (flags & AC_ETIME) { 182 (void)printf(" %8.3f es", ab.ac_etime / 1000000); 183 } 184 185 /* starting time */ 186 if (flags & AC_BTIME) { 187 (void)printf(" %.16s", ctime(&ab.ac_btime)); 188 } 189 190 /* exit time (starting time + elapsed time )*/ 191 if (flags & AC_FTIME) { 192 t = ab.ac_btime; 193 t += (time_t)(ab.ac_etime / 1000000); 194 (void)printf(" %.16s", 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 acctv2 *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] [command ...] [user ...] [terminal ...]\n"); 261 exit(1); 262 } 263