[apple/shell_cmds.git] / lastcomm / lastcomm.c

/*	$NetBSD: lastcomm.c,v 1.14 1998/04/02 10:22:03 kleink Exp $	*/

/*
 * Copyright (c) 1980, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
	The Regents of the University of California.  All rights reserved.\n");
#endif /* not lint */

#ifndef lint
#if 0
static char sccsid[] = "@(#)lastcomm.c	8.2 (Berkeley) 4/29/95";
#endif
__RCSID("$NetBSD: lastcomm.c,v 1.14 1998/04/02 10:22:03 kleink Exp $");
#endif /* not lint */

#include <sys/param.h>
#include <sys/stat.h>
#include <sys/acct.h>

#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <math.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <struct.h>
#include <time.h>
#include <tzfile.h>
#include <unistd.h>
#include <utmp.h>
#include "pathnames.h"

time_t	 expand __P((u_int));
char	*flagbits __P((int));
char	*getdev __P((dev_t));
int	 main __P((int, char **));
int	 requested __P((char *[], struct acct *));
void	 usage __P((void));

int
main(argc, argv)
	int argc;
	char *argv[];
{
	char *p;
	struct acct ab;
	struct stat sb;
	FILE *fp;
	off_t size;
	time_t t;
	double delta;
	int ch;
	char *acctfile;

	acctfile = _PATH_ACCT;
	while ((ch = getopt(argc, argv, "f:")) != -1)
		switch((char)ch) {
		case 'f':
			acctfile = optarg;
			break;
		case '?':
		default:
			usage();
		}
	argc -= optind;
	argv += optind;

	/* Open the file. */
	if ((fp = fopen(acctfile, "r")) == NULL || fstat(fileno(fp), &sb))
		err(1, "%s", acctfile);

	/*
	 * Round off to integral number of accounting records, probably
	 * not necessary, but it doesn't hurt.
	 */
	size = sb.st_size - sb.st_size % sizeof(struct acct);

	/* Check if any records to display. */
	if (size < sizeof(struct acct))
		exit(0);

	/*
	 * Seek to before the last entry in the file; use lseek(2) in case
	 * the file is bigger than a "long".
	 */
	size -= sizeof(struct acct);
	if (lseek(fileno(fp), size, SEEK_SET) == -1)
		err(1, "%s", acctfile);

	for (;;) {
		if (fread(&ab, sizeof(struct acct), 1, fp) != 1)
			err(1, "%s", acctfile);

		if (ab.ac_comm[0] == '\0') {
			ab.ac_comm[0] = '?';
			ab.ac_comm[1] = '\0';
		} else
			for (p = &ab.ac_comm[0];
			    p < &ab.ac_comm[fldsiz(acct, ac_comm)] && *p; ++p)
				if (!isprint(*p))
					*p = '?';
		if (!*argv || requested(argv, &ab)) {

			t = expand(ab.ac_utime) + expand(ab.ac_stime);
			(void)printf(
			    "%-*.*s %-7s %-*.*s %-*.*s %6.2f secs %.16s",
			     (int)fldsiz(acct, ac_comm),
			     (int)fldsiz(acct, ac_comm),
			     ab.ac_comm, flagbits(ab.ac_flag),
			     UT_NAMESIZE, UT_NAMESIZE,
			     user_from_uid(ab.ac_uid, 0), UT_LINESIZE,
			     UT_LINESIZE, getdev(ab.ac_tty),
			     t / (double)AHZ, ctime(&ab.ac_btime));
			delta = expand(ab.ac_etime) / (double)AHZ;
			printf(" (%1.0f:%02.0f:%05.2f)\n",
			       delta / SECSPERHOUR,
			       fmod(delta, SECSPERHOUR) / SECSPERMIN,
			       fmod(delta, SECSPERMIN));
		}
		/* are we at the beginning of the file yet? */
		if (size == 0)
			break;
		/* seek backward over the one we read and the next to read */
		if (fseek(fp, 2 * -(long)sizeof(struct acct), SEEK_CUR) == -1)
			err(1, "%s", acctfile);
		/* and account for its size */
		size -= sizeof(struct acct);
	}
	exit(0);
}

time_t
expand(t)
	u_int t;
{
	time_t nt;

	nt = t & 017777;
	t >>= 13;
	while (t) {
		t--;
		nt <<= 3;
	}
	return (nt);
}

char *
flagbits(f)
	int f;
{
	static char flags[20] = "-";
	char *p;

#define	BIT(flag, ch)	if (f & flag) *p++ = ch

	p = flags + 1;
	BIT(ASU, 'S');
	BIT(AFORK, 'F');
	BIT(ACOMPAT, 'C');
	BIT(ACORE, 'D');
	BIT(AXSIG, 'X');
	*p = '\0';
	return (flags);
}

int
requested(argv, acp)
	char *argv[];
	struct acct *acp;
{
	do {
		if (!strcmp(user_from_uid(acp->ac_uid, 0), *argv))
			return (1);
		if (!strcmp(getdev(acp->ac_tty), *argv))
			return (1);
		if (!strncmp(acp->ac_comm, *argv, fldsiz(acct, ac_comm)))
			return (1);
	} while (*++argv);
	return (0);
}

char *
getdev(dev)
	dev_t dev;
{
	static dev_t lastdev = (dev_t)-1;
	static char *lastname;

	if (dev == NODEV)			/* Special case. */
		return ("__");
	if (dev == lastdev)			/* One-element cache. */
		return (lastname);
	lastdev = dev;
	if ((lastname = devname(dev, S_IFCHR)) == NULL)
		lastname = "??";
	return (lastname);
}

void
usage()
{
	(void)fprintf(stderr,
	    "lastcomm [ -f file ] [command ...] [user ...] [tty ...]\n");
	exit(1);
}
Commit	Line	Data
44bd5ea7 A	1	/* $NetBSD: lastcomm.c,v 1.14 1998/04/02 10:22:03 kleink Exp $ */
	2
	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. All advertising materials mentioning features or use of this software
	16	* must display the following acknowledgement:
	17	* This product includes software developed by the University of
	18	* California, Berkeley and its contributors.
	19	* 4. Neither the name of the University nor the names of its contributors
	20	* may be used to endorse or promote products derived from this software
	21	* without specific prior written permission.
	22	*
	23	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	24	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	25	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	26	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	27	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	28	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	29	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	30	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	31	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	32	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	33	* SUCH DAMAGE.
	34	*/
	35
	36	#include <sys/cdefs.h>
	37	#ifndef lint
	38	__COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
	39	The Regents of the University of California. All rights reserved.\n");
	40	#endif /* not lint */
	41
	42	#ifndef lint
	43	#if 0
	44	static char sccsid[] = "@(#)lastcomm.c 8.2 (Berkeley) 4/29/95";
	45	#endif
	46	__RCSID("$NetBSD: lastcomm.c,v 1.14 1998/04/02 10:22:03 kleink Exp $");
	47	#endif /* not lint */
	48
	49	#include <sys/param.h>
	50	#include <sys/stat.h>
	51	#include <sys/acct.h>
	52
	53	#include <ctype.h>
	54	#include <err.h>
	55	#include <fcntl.h>
	56	#include <math.h>
	57	#include <pwd.h>
	58	#include <stdio.h>
	59	#include <stdlib.h>
	60	#include <string.h>
	61	#include <struct.h>
	62	#include <time.h>
	63	#include <tzfile.h>
	64	#include <unistd.h>
65	#include <utmp.h>
66	#include "pathnames.h"
67
68	time_t expand __P((u_int));
69	char *flagbits __P((int));
70	char *getdev __P((dev_t));
71	int main __P((int, char **));
72	int requested __P((char [], struct acct ));
73	void usage __P((void));
74
75	int
76	main(argc, argv)
77	int argc;
78	char *argv[];
79	{
80	char *p;
81	struct acct ab;
82	struct stat sb;
83	FILE *fp;
84	off_t size;
85	time_t t;
86	double delta;
87	int ch;
88	char *acctfile;
89
90	acctfile = _PATH_ACCT;
91	while ((ch = getopt(argc, argv, "f:")) != -1)
92	switch((char)ch) {
93	case 'f':
94	acctfile = optarg;
95	break;
96	case '?':
97	default:
98	usage();
99	}
100	argc -= optind;
101	argv += optind;
102
103	/* Open the file. */
104	if ((fp = fopen(acctfile, "r")) == NULL \|\| fstat(fileno(fp), &sb))
105	err(1, "%s", acctfile);
106
107	/*
108	* Round off to integral number of accounting records, probably
109	* not necessary, but it doesn't hurt.
110	*/
111	size = sb.st_size - sb.st_size % sizeof(struct acct);
112
113	/* Check if any records to display. */
114	if (size < sizeof(struct acct))
115	exit(0);
116
117	/*
118	* Seek to before the last entry in the file; use lseek(2) in case
119	* the file is bigger than a "long".
120	*/
121	size -= sizeof(struct acct);
122	if (lseek(fileno(fp), size, SEEK_SET) == -1)
123	err(1, "%s", acctfile);
124
125	for (;;) {
126	if (fread(&ab, sizeof(struct acct), 1, fp) != 1)
127	err(1, "%s", acctfile);
128
129	if (ab.ac_comm[0] == '\0') {
130	ab.ac_comm[0] = '?';
131	ab.ac_comm[1] = '\0';
132	} else
133	for (p = &ab.ac_comm[0];
134	p < &ab.ac_comm[fldsiz(acct, ac_comm)] && *p; ++p)
135	if (!isprint(*p))
136	*p = '?';
137	if (!*argv \|\| requested(argv, &ab)) {
138
139	t = expand(ab.ac_utime) + expand(ab.ac_stime);
140	(void)printf(
141	"%-.s %-7s %-.s %-.s %6.2f secs %.16s",
142	(int)fldsiz(acct, ac_comm),
143	(int)fldsiz(acct, ac_comm),
144	ab.ac_comm, flagbits(ab.ac_flag),
145	UT_NAMESIZE, UT_NAMESIZE,
146	user_from_uid(ab.ac_uid, 0), UT_LINESIZE,
147	UT_LINESIZE, getdev(ab.ac_tty),
148	t / (double)AHZ, ctime(&ab.ac_btime));
149	delta = expand(ab.ac_etime) / (double)AHZ;
150	printf(" (%1.0f:%02.0f:%05.2f)\n",
151	delta / SECSPERHOUR,
152	fmod(delta, SECSPERHOUR) / SECSPERMIN,
153	fmod(delta, SECSPERMIN));
154	}
155	/* are we at the beginning of the file yet? */
156	if (size == 0)
157	break;
158	/* seek backward over the one we read and the next to read */
159	if (fseek(fp, 2 * -(long)sizeof(struct acct), SEEK_CUR) == -1)
160	err(1, "%s", acctfile);
161	/* and account for its size */
162	size -= sizeof(struct acct);
163	}
164	exit(0);
165	}
166
167	time_t
168	expand(t)
169	u_int t;
170	{
171	time_t nt;
172
173	nt = t & 017777;
174	t >>= 13;
175	while (t) {
176	t--;
177	nt <<= 3;
178	}
179	return (nt);
180	}
181
182	char *
183	flagbits(f)
184	int f;
185	{
186	static char flags[20] = "-";
187	char *p;
188
189	#define BIT(flag, ch) if (f & flag) *p++ = ch
190
191	p = flags + 1;
192	BIT(ASU, 'S');
193	BIT(AFORK, 'F');
194	BIT(ACOMPAT, 'C');
195	BIT(ACORE, 'D');
196	BIT(AXSIG, 'X');
197	*p = '\0';
198	return (flags);
199	}
200
201	int
202	requested(argv, acp)
203	char *argv[];
204	struct acct *acp;
205	{
206	do {
207	if (!strcmp(user_from_uid(acp->ac_uid, 0), *argv))
208	return (1);
209	if (!strcmp(getdev(acp->ac_tty), *argv))
210	return (1);
211	if (!strncmp(acp->ac_comm, *argv, fldsiz(acct, ac_comm)))
212	return (1);
213	} while (*++argv);
214	return (0);
215	}
216
217	char *
218	getdev(dev)
219	dev_t dev;
220	{
221	static dev_t lastdev = (dev_t)-1;
222	static char *lastname;
223
224	if (dev == NODEV) /* Special case. */
225	return ("__");
226	if (dev == lastdev) /* One-element cache. */
227	return (lastname);
228	lastdev = dev;
229	if ((lastname = devname(dev, S_IFCHR)) == NULL)
230	lastname = "??";
231	return (lastname);
232	}
233
234	void
235	usage()
236	{
237	(void)fprintf(stderr,
238	"lastcomm [ -f file ] [command ...] [user ...] [tty ...]\n");
239	exit(1);
240	}