jeff@tekcsc.mkt.tek.com (Jeff Beadles) (11/09/88)
Posting-number: Volume 5, Issue 37
Submitted-by: "Jeff Beadles" <jeff@tekcsc.mkt.tek.com>
Archive-name: bsd.getut
[I take it this was redirected. Note that it won't help you compile s5finger
on a non-System-V system: getutline() isn't here. ++bsa]
Here's something for comp.sources.unix. It does have a copyright message,
but I think that it's more than reasonable.
Jeff Beadles IDG Customer Support Center Tektronix, Inc.
jeff@tekcsc.MKT.TEK.COM -or- POB 1000
..!tektronix!tekcsc.mkt.tek.com!jeff Wilsonville, OR. 97070 MS 63-171
#--------------------------------CUT HERE-------------------------------------
#! /bin/sh
#
# This is a shell archive. Save this into a file, edit it
# and delete all lines above this comment. Then give this
# file to sh by executing the command "sh file". The files
# will be extracted into the current directory owned by
# you with default permissions.
#
# The files contained herein are:
#
# -rw-r--r-- 1 jeff 1462 Oct 31 17:36 myutmp.c
#
echo 'x - myutmp.c'
if test -f myutmp.c; then echo 'shar: not overwriting myutmp.c'; else
sed 's/^X//' << '________This_Is_The_END________' > myutmp.c
X/*
X * myutmp.c Copyright 1988, Jeff Beadles
X * Permission is granted to this program where ever you desire as long
X * as I am credited as the author.
X *
X * (Does this exist somewhere? I couldn't find a tool to do this
X * function!)
X *
X * This will make-up for the lack of {get,end,set}utent. It is not a
X * complete implimentation, but should get most people by. I wrote it
X * so I could compile and use "party", on a BSD system here.
X *
X * No makefile is needed. Just cc -c myutmp.c This will NOT give an
X * executable program. It must be loaded into a program that requires
X * getutent, endutent, setutent.
X *
X * Question, comments, suggestions to jeff@tekcsc.MKT.TEK.COM.
X * Flames to /dev/null. (What do you expect for free?)
X *
X */
X
X#include <utmp.h>
X#include <stdio.h>
Xvoid setutent(), endutent();
Xstruct utmp *getutent();
Xint fp;
X
X/*
X * Set-up utemp file for reading
X */
Xvoid setutent()
X {
X fp=open("/etc/utmp",0);
X if ( fp == -1 )
X {
X perror("Error opening /etc/utmp");
X exit(-1);
X }
X }
X/*
X * Get an entry from the utmp file. Return NULL if not available.
X */
Xstruct utmp *getutent()
X {
X int retval;
X static struct utmp myline;
X
X retval=read(fp, &myline, sizeof(struct utmp));
X if ( retval != sizeof(struct utmp))
X return( ((struct utmp *) NULL) );
X else
X if ( myline.ut_name[0] == '\0')
X getutent(); /* call again, eats blank entries */
X return(&myline);
X }
X
X/*
X * End use of utmp file.
X */
Xvoid endutent()
X {
X close(fp);
X fp=0;
X }
X
X
________This_Is_The_END________
if test `wc -l < myutmp.c` -ne 66; then
echo 'shar: myutmp.c was damaged during transit (should have been 66 lines)'
fi
fi ; : end of overwriting check
exit 0