home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Linux Cubed Series 7: Sunsite
/
Linux Cubed Series 7 - Sunsite Vol 1.iso
/
system
/
admin
/
accounts
/
acct-1.3
/
acct-1
/
acct-1.3.73
/
utils
/
lastcomm.c
< prev
next >
Wrap
C/C++ Source or Header
|
1995-07-09
|
8KB
|
308 lines
/*
* Copyright (c) 1980 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.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980 Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)lastcomm.c 5.11.2 (Berkeley) 7/9/1995";
#endif /* not lint */
/*
* last command
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <linux/acct.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <utmp.h>
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <pwd.h>
#include <getopt.h>
#include <sys/types.h>
#include <unistd.h>
#include "pathnames.h"
#define LINESIZE 6
#define _PATH_DEV "/dev/"
#define NODEV (-1)
/*
* This seems to have to be multiple of struct acct size
* Now it is 160 * 52
*/
#define DEVSIZE 8320L
#define btodb(x) ((x)/DEVSIZE)
#define dbtob(x) ((x)*DEVSIZE)
struct acct buf[DEVSIZE / sizeof (struct acct)];
time_t expand(unsigned);
char *flagbits(register int);
char *getdev(dev_t);
time_t expand (unsigned t)
{
register time_t nt;
nt = t & 017777;
t >>= 13;
while (t) {
t--;
nt <<= 3;
}
return (nt);
}
#define BIT(flag, ch) if (f & flag) *p++ = ch;
char *flagbits(register int f)
{
static char flags[20];
char *p, *strcpy();
p = strcpy(flags, "- ");
BIT(ASU, 'S');
BIT(AFORK, 'F');
BIT(ACORE, 'D');
BIT(AXSIG, 'X');
return (flags);
}
int ok(register char **argv, register struct acct *acp)
{
register char *cp;
char *user_from_uid(uid_t, int);
do {
cp = user_from_uid(acp->ac_uid, 0);
if (!strcmp(cp, *argv))
return(1);
if ((cp = getdev(acp->ac_tty)) && !strcmp(cp, *argv))
return(1);
if (!strncmp(acp->ac_comm, *argv, sizeof(acp->ac_comm)))
return(1);
} while (*++argv);
return(0);
}
#include <sys/dir.h>
#define N_DEVS 131 /* hash value for device names */
#define NDEVS 2048 /* max number of file names in /dev */
struct devhash {
dev_t dev_dev;
char dev_name [LINESIZE + 1];
struct devhash * dev_nxt;
};
struct devhash *dev_hash[N_DEVS];
struct devhash *dev_chain;
#define HASH(d) (((int) d) % N_DEVS)
void setupdevs()
{
register DIR * fd;
register struct devhash * hashtab;
register ndevs = NDEVS;
struct direct * dp;
char *malloc();
/*NOSTRICT*/
hashtab = (struct devhash *)malloc(NDEVS * sizeof(struct devhash));
if (hashtab == (struct devhash *)0) {
fputs("No mem for dev table\n", stderr);
return;
}
if ((fd = opendir(_PATH_DEV)) == NULL) {
perror(_PATH_DEV);
return;
}
while ((dp = readdir(fd))) {
if (dp->d_ino == 0)
continue;
if (strncmp(dp->d_name, "vc", 2) && strncmp(dp->d_name, "tty", 3) &&
strcmp(dp->d_name, "console"))
continue;
(void)strncpy(hashtab->dev_name, dp->d_name, LINESIZE);
hashtab->dev_name[LINESIZE] = 0;
hashtab->dev_nxt = dev_chain;
dev_chain = hashtab;
hashtab++;
if (--ndevs <= 0)
break;
}
closedir(fd);
}
char *getdev(dev_t dev)
{
register struct devhash *hp, *nhp;
struct stat statb;
char name[sizeof(hp->dev_name) + 6];
static dev_t lastdev = (dev_t) -1;
static char *lastname;
static int init = 0;
char *strcpy(), *strcat();
if (dev == (dev_t) NODEV)
return ("__");
if (dev == lastdev)
return (lastname);
if (!init) {
setupdevs();
init++;
}
for (hp = dev_hash[HASH(dev)]; hp; hp = hp->dev_nxt)
if (hp->dev_dev == dev) {
lastdev = dev;
return (lastname = hp->dev_name);
}
for (hp = dev_chain; hp; hp = nhp) {
nhp = hp->dev_nxt;
(void)strcpy(name, _PATH_DEV);
strcat(name, hp->dev_name);
if (stat(name, &statb) < 0) /* name truncated usually */
continue;
if ((statb.st_mode & S_IFMT) != S_IFCHR)
continue;
hp->dev_dev = statb.st_rdev;
hp->dev_nxt = dev_hash[HASH(hp->dev_dev)];
dev_hash[HASH(hp->dev_dev)] = hp;
if (hp->dev_dev == dev) {
dev_chain = nhp;
lastdev = dev;
return (lastname = hp->dev_name);
}
}
dev_chain = (struct devhash *) 0;
return ("??");
}
char *user_from_uid(uid_t uid, int val)
{
struct passwd *p;
p=getpwuid(uid);
if(p!=NULL)
return(p->pw_name);
return("???");
}
int main(int argc, char **argv)
{
extern int optind;
extern char *optarg;
register struct acct *acp;
register int cc;
register long bn;
struct stat sb;
int ch, fd;
long endtime;
char *acctfile, *user_from_uid(uid_t, int);
long lseek();
acctfile = _PATH_ACCT;
while ((ch = getopt(argc, argv, "f:")) != EOF)
switch((char)ch) {
case 'f':
acctfile = optarg;
break;
case '?':
default:
fputs("lastcomm [ -f file ]\n", stderr);
exit(1);
}
argv += optind;
fd = open(acctfile, O_RDONLY);
if (fd < 0) {
perror(acctfile);
exit(1);
}
printf("%-*.*s %s %-*s %-*s %s %-11s %.19s\n",
(int) sizeof(acp->ac_comm),
(int) sizeof(acp->ac_comm),
"Command",
"Flags",
UT_NAMESIZE,
"User",
LINESIZE,
"Tty",
"PagFlt",
"Time",
"Endtime");
(void)fstat(fd, &sb);
for (bn = btodb(sb.st_size); bn >= 0; bn--) {
(void)lseek(fd, (off_t)dbtob(bn), L_SET);
cc = read(fd, buf, DEVSIZE);
if (cc < 0) {
perror("read");
break;
}
acp = buf + ((cc / sizeof (buf[0])) - 1);
for (; acp >= buf; acp--) {
register char *cp;
time_t x;
if (acp->ac_comm[0] == '\0')
(void)strcpy(acp->ac_comm, "?");
for (cp = &acp->ac_comm[0];
cp < &acp->ac_comm[sizeof(acp->ac_comm)] && *cp;
cp++)
if (!isascii(*cp) || iscntrl(*cp))
*cp = '?';
if (*argv && ! ok(argv, acp))
continue;
x = expand(acp->ac_utime) + expand(acp->ac_stime);
endtime = acp->ac_btime + acp->ac_etime;
printf("%-*.*s %s %-*s %-*s %6ld %6.2f secs %.19s\n",
(int) sizeof(acp->ac_comm),
(int) sizeof(acp->ac_comm),
acp->ac_comm, flagbits(acp->ac_flag),
UT_NAMESIZE, user_from_uid(acp->ac_uid, 0),
LINESIZE, getdev(acp->ac_tty),
acp->ac_minflt + acp->ac_majflt,
x / (double)AHZ, ctime(&endtime));
}
}
return 0;
}