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276 lines
6.6 KiB
C
276 lines
6.6 KiB
C
/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1980, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)lastcomm.c 8.1 (Berkeley) 6/6/93";
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#endif
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#endif /* not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/acct.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include "pathnames.h"
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/*XXX*/#include <inttypes.h>
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time_t expand(u_int);
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char *flagbits(int);
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const char *getdev(dev_t);
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int readrec_forward(FILE *f, struct acctv2 *av2);
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int readrec_backward(FILE *f, struct acctv2 *av2);
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int requested(char *[], struct acctv2 *);
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static void usage(void);
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#define AC_UTIME 1 /* user */
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#define AC_STIME 2 /* system */
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#define AC_ETIME 4 /* elapsed */
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#define AC_CTIME 8 /* user + system time, default */
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#define AC_BTIME 16 /* starting time */
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#define AC_FTIME 32 /* exit time (starting time + elapsed time )*/
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int
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main(int argc, char *argv[])
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{
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struct acctv2 ab;
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char *p;
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FILE *fp;
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int (*readrec)(FILE *f, struct acctv2 *av2);
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time_t t;
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int ch, rv;
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const char *acctfile, *format;
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char buf[1024];
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int flags = 0;
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acctfile = _PATH_ACCT;
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format = NULL;
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while ((ch = getopt(argc, argv, "f:usecSE")) != -1)
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switch((char)ch) {
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case 'f':
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acctfile = optarg;
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break;
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case 'u':
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flags |= AC_UTIME; /* user time */
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break;
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case 's':
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flags |= AC_STIME; /* system time */
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break;
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case 'e':
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flags |= AC_ETIME; /* elapsed time */
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break;
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case 'c':
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flags |= AC_CTIME; /* user + system time */
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break;
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case 'S':
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flags |= AC_BTIME; /* starting time */
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break;
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case 'E':
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/* exit time (starting time + elapsed time )*/
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flags |= AC_FTIME;
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break;
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case '?':
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default:
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usage();
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}
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/* default user + system time and starting time */
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if (!flags) {
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flags = AC_CTIME | AC_BTIME;
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}
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argc -= optind;
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argv += optind;
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if (argc > 0 && **argv == '+') {
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format = *argv + 1; /* skip + */
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argc--;
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argv++;
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}
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if (strcmp(acctfile, "-") == 0) {
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fp = stdin;
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readrec = readrec_forward;
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} else {
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/* Open the file. */
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if ((fp = fopen(acctfile, "r")) == NULL)
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err(1, "could not open %s", acctfile);
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if (fseek(fp, 0l, SEEK_END) == -1)
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err(1, "seek to end of %s failed", acctfile);
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readrec = readrec_backward;
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}
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while ((rv = readrec(fp, &ab)) == 1) {
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for (p = &ab.ac_comm[0];
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p < &ab.ac_comm[AC_COMM_LEN] && *p; ++p)
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if (!isprint(*p))
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*p = '?';
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if (*argv && !requested(argv, &ab))
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continue;
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(void)printf("%-*.*s %-7s %-*s %-8s",
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AC_COMM_LEN, AC_COMM_LEN, ab.ac_comm,
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flagbits(ab.ac_flagx),
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MAXLOGNAME - 1, user_from_uid(ab.ac_uid, 0),
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getdev(ab.ac_tty));
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/* user + system time */
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if (flags & AC_CTIME) {
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(void)printf(" %6.3f secs",
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(ab.ac_utime + ab.ac_stime) / 1000000);
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}
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/* usr time */
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if (flags & AC_UTIME) {
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(void)printf(" %6.3f us", ab.ac_utime / 1000000);
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}
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/* system time */
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if (flags & AC_STIME) {
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(void)printf(" %6.3f sy", ab.ac_stime / 1000000);
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}
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/* elapsed time */
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if (flags & AC_ETIME) {
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(void)printf(" %8.3f es", ab.ac_etime / 1000000);
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}
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/* starting time */
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if (flags & AC_BTIME) {
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if (format != NULL) {
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(void)strftime(buf, sizeof(buf), format,
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localtime(&ab.ac_btime));
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(void)printf(" %s", buf);
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} else
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(void)printf(" %.16s", ctime(&ab.ac_btime));
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}
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/* exit time (starting time + elapsed time )*/
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if (flags & AC_FTIME) {
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t = ab.ac_btime;
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t += (time_t)(ab.ac_etime / 1000000);
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if (format != NULL) {
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(void)strftime(buf, sizeof(buf), format,
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localtime(&t));
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(void)printf(" %s", buf);
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} else
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(void)printf(" %.16s", ctime(&t));
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}
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printf("\n");
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}
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if (rv == EOF)
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err(1, "read record from %s failed", acctfile);
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if (fflush(stdout))
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err(1, "stdout");
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exit(0);
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}
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char *
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flagbits(int f)
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{
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static char flags[20] = "-";
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char *p;
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#define BIT(flag, ch) if (f & flag) *p++ = ch
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p = flags + 1;
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BIT(ASU, 'S');
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BIT(AFORK, 'F');
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BIT(ACOMPAT, 'C');
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BIT(ACORE, 'D');
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BIT(AXSIG, 'X');
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*p = '\0';
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return (flags);
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}
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int
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requested(char *argv[], struct acctv2 *acp)
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{
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const char *p;
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do {
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p = user_from_uid(acp->ac_uid, 0);
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if (!strcmp(p, *argv))
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return (1);
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if ((p = getdev(acp->ac_tty)) && !strcmp(p, *argv))
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return (1);
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if (!strncmp(acp->ac_comm, *argv, AC_COMM_LEN))
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return (1);
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} while (*++argv);
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return (0);
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}
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const char *
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getdev(dev_t dev)
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{
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static dev_t lastdev = (dev_t)-1;
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static const char *lastname;
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if (dev == NODEV) /* Special case. */
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return ("__");
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if (dev == lastdev) /* One-element cache. */
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return (lastname);
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lastdev = dev;
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lastname = devname(dev, S_IFCHR);
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return (lastname);
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}
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static void
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usage(void)
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{
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(void)fprintf(stderr,
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"usage: lastcomm [-EScesu] [-f file] [+format] [command ...] "
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"[user ...] [terminal ...]\n");
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exit(1);
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}
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