info problem
ger...@uiucdcs.cs.uiuc.edu
Has anyone seen the problem where the info command gives you a screen of junk
file names? It looks like it is chopping characters off of file names and
sometimes throwing in extra characters. Info on a particular subject works
fine, but when info takes a look at the directory it seems confused about its
contents. Any fix for this?
Stephen Hemminger
with info on 4.2.
----------- cut ----------
: Run this shell script with "sh" not "csh"
PATH=:/bin:/usr/bin:/usr/ucb
export PATH
all=FALSE
if [ $1x = -ax ]; then
all=TRUE
fi
/bin/echo 'Extracting README'
sed 's/^X//' <<'//go.sysin dd *' >README
Fixes for PSL's empire (version as of Jan 1983),
to make it run on 4.{2,3} bsd.
Here is a start at fixing some bugs caused by changes from 4.1 to 4.2.
1) New info command since info scan's directories this is needed.
You probably want to pre nroff the info files.
Also how nroff/pager is run maybe different than original
check nrarg[] and nnrarg in empdefs.c
2) since stat changed, add new gtmod and modtime.
3) new ioctl so new sread/inflush
4) use better random number generator.
This gets the obvious bugs (not all are gone).
To install this:
unpack the sources (I use /usr/games/.../EMP/FIXES)
make
make install (will put the new .o into the archives)
rebuild empire
//go.sysin dd *
made=TRUE
if [ $made = TRUE ]; then
/bin/chmod 664 README
/bin/echo -n ' '; /bin/ls -ld README
fi
/bin/echo 'Extracting gtmod.c'
sed 's/^X//' <<'//go.sysin dd *' >gtmod.c
X/*
* Return mode of a file.
*/
#include <sys/types.h>
#include <sys/stat.h>
gtmod(file)
char *file;
{
struct stat stb;
if(stat(file, &stb) < 0)
return -1;
else
return stb.st_mode;
}
//go.sysin dd *
made=TRUE
if [ $made = TRUE ]; then
/bin/chmod 664 gtmod.c
/bin/echo -n ' '; /bin/ls -ld gtmod.c
fi
/bin/echo 'Extracting inflush.c'
sed 's/^X//' <<'//go.sysin dd *' >inflush.c
X/*
* flush input
*/
#include <sys/ioctl.h>
inflush() {
static int rd = 1;
ioctl(0, TIOCFLUSH, &rd);
}
//go.sysin dd *
made=TRUE
if [ $made = TRUE ]; then
/bin/chmod 664 inflush.c
/bin/echo -n ' '; /bin/ls -ld inflush.c
fi
/bin/echo 'Extracting info.c'
sed 's/^X//' <<'//go.sysin dd *' >info.c
X/*
* Repaired version of info
*/
#include <sys/types.h>
#include <sys/dir.h>
extern char *nrarg[], junk[], *nroffil, *infodir, *argp[];
extern int nnrarg;
extern char *copy(), *fmt();
extern long modtime();
extern char *ctime();
info()
{
register int pid, w;
register char *p;
char *topic;
int status;
long mtime;
if( (topic = argp[1]) == 0) {
ilist(0);
return;
}
if(topic[0] >= '0' && topic[0] <= '9') {
ilist(atoi(topic));
return;
}
if(strcmp(topic, "on") == 0 && argp[2]) {
topic = argp[2];
}
p = copy(infodir,junk);
*p++ = '/';
(void) copy(topic, p);
nrarg[nnrarg] = junk;
if( (mtime = modtime(junk)) < 0) {
pr(fmt("There is no info on %s\n", topic));
return;
}
pr(fmt("Info on %s -- Last mod : %s", topic, ctime(&mtime)));
pid = vfork();
if(pid == -1) {
pr("vfork error\n");
return;
}
if(pid == 0) {
execv(nroffil, nrarg);
pr(fmt("Sorry, %s is not execlable\n", nroffil));
_exit(1);
}
while( (w = wait(&status)) != -1 && w != pid)
;
}
static long cutoff;
static iselect(dp)
struct direct *dp;
{
if(dp->d_name[0] == '.')
return 0;
if( cutoff && modtime(dp->d_name) >= cutoff)
return 0;
return 1;
}
ilist(days) {
extern char *infodir;
register struct direct *dp;
register int n, i;
struct direct **namelist;
extern int alphasort();
if(days) {
time(&cutoff);
cutoff -= days*24*60*60;
} else {
cutoff = 0L;
}
if( (n = scandir(infodir, &namelist, iselect, alphasort)) < 0) {
pr("No info available");
return;
}
if(days)
pr(fmt("Info topics modified since %s", ctime(&cutoff)));
else
pr("Information is currently available on:\n");
for(i = 0; i < n; ++i) {
dp = namelist[i];
pr(fmt("%-16.16s", dp->d_name));
if((i % 4) == 0)
pr("\n");
free((char *) dp);
}
pr("\n");
free((char *) namelist);
}
//go.sysin dd *
made=TRUE
if [ $made = TRUE ]; then
/bin/chmod 664 info.c
/bin/echo -n ' '; /bin/ls -ld info.c
fi
/bin/echo 'Extracting makefile'
sed 's/^X//' <<'//go.sysin dd *' >makefile
#
# Empire fixes
CFLAGS = -O
EOBJS = info.o
GOBJS = gtmod.o modtime.o rand.o sread.o inflush.o
OBJS = ${EOBJS} ${GOBJS}
all: ${OBJS}
install: ${OBJS}
ar r ../../glib.a ${GOBJS}
ranlib ../../glib.a
ar r ../empcom.a ${EOBJS}
ranlib ../empcom.a
//go.sysin dd *
made=TRUE
if [ $made = TRUE ]; then
/bin/chmod 664 makefile
/bin/echo -n ' '; /bin/ls -ld makefile
fi
/bin/echo 'Extracting modtime.c'
sed 's/^X//' <<'//go.sysin dd *' >modtime.c
X/*
* return time last modified
*/
#include <sys/types.h>
#include <sys/stat.h>
long modtime(file)
char *file;
{
struct stat stb;
if(stat(file, &stb) < 0)
return -1;
else
return stb.st_mtime;
}
//go.sysin dd *
made=TRUE
if [ $made = TRUE ]; then
/bin/chmod 664 modtime.c
/bin/echo -n ' '; /bin/ls -ld modtime.c
fi
/bin/echo 'Extracting rand.c'
sed 's/^X//' <<'//go.sysin dd *' >rand.c
X/*
* random upgrade
*/
srand(seed) {
srandom(seed);
}
int rand() {
extern long random();
return (random() >> 2) & 0xffff; /* make it a short */
}
//go.sysin dd *
made=TRUE
if [ $made = TRUE ]; then
/bin/chmod 664 rand.c
/bin/echo -n ' '; /bin/ls -ld rand.c
fi
/bin/echo 'Extracting sread.c'
sed 's/^X//' <<'//go.sysin dd *' >sread.c
X/*
* Safe read
*/
#include <stdio.h>
#include <setjmp.h>
#include <signal.h>
#include <sys/ioctl.h>
static jmp_buf sjbuf;
static int icatch() {
longjmp(sjbuf, 1);
}
int sread(buf, size)
char *buf;
{
struct sgttyb otty, ntty;
int (*oint)();
int cc = 0;
ioctl(0, TIOCGETP, &otty);
ntty = otty;
if(setjmp(sjbuf))
goto leave;
oint = signal(SIGINT, icatch);
ntty.sg_flags &= ~ECHO;
ioctl(0, TIOCSETN, &ntty);
fflush(stdout);
cc = read(0, buf, size);
leave:
ioctl(0, TIOCSETP, &otty);
signal(SIGINT, oint);
return cc;
}
//go.sysin dd *
made=TRUE
if [ $made = TRUE ]; then
/bin/chmod 664 sread.c
/bin/echo -n ' '; /bin/ls -ld sread.c
fi
John Buck
> Has anyone seen the problem where the info command gives you a screen of junk
> file names? It looks like it is chopping characters off of file names and
> sometimes throwing in extra characters.
What type of system is this running on? Berkeley or USG ? Perhaps you
tried to use the USG version of info.o on a Berkeley system. Berkeley
has the mucked up directory structure remember... You can not use
'conventional' methods to read it.
John Buck
Polytechnic Inst. of NY
Route 110
Farmingdale, NY 11735 516-454-5191
decvax!mcnc!{philabs,rti-sel}!polyof!john