V10/cmd/arff.c
static char *sccsid = "@(#)arff.c 4.7 (Berkeley) 81/07/08";
#include <sys/types.h>
#include <sys/stat.h>
#include <time.h>
#include <signal.h>
#include <stdio.h>
#define dbprintf printf
struct rt_dat {
unsigned short int rt_yr:5; /* Year - 1972 */
unsigned short int rt_dy:5; /* day */
unsigned short int rt_mo:5; /* month */
};
struct rt_axent {
char rt_sent[14];
};
struct rt_ent {
char rt_pad; /* unusued */
char rt_stat; /* Type of entry, or end of seg */
unsigned short rt_name[3]; /* Name, 3 words in rad50 form */
short rt_len; /* Length of file */
char rt_chan; /* Only used in temporary files */
char rt_job; /* Only used in temporary files */
struct rt_dat rt_date; /* Creation Date */
};
#define RT_TEMP 1
#define RT_NULL 2
#define RT_FILE 4
#define RT_ESEG 8
#define RT_BLOCK 512
#define RT_DIRSIZE 31 /* max # of directory segments */
struct rt_head {
short rt_numseg; /* number of segments available */
short rt_nxtseg; /* segment no of next log. seg */
short rt_lstseg; /* highest seg currenltly open */
unsigned short rt_entpad; /* extra words/dir. entry */
short rt_stfile; /* block no where files begin */
};
struct rt_dir {
struct rt_head rt_axhead;
struct rt_ent rt_ents[72];
char _dirpad[6];
};
extern struct rt_dir rt_dir[RT_DIRSIZE];
extern int rt_entsiz;
extern int floppydes;
extern char *rt_last;
typedef struct fldope {
int startad;
int count;
struct rt_ent *rtdope;
} FLDOPE;
#define FL_BLOCK 128
FLDOPE *lookup();
#define rt(p) ((struct rt_ent *) p )
#define Ain1 03100
#define Ain2 050
#define flag(c) (flg[(c) - 'a'])
char *man = { "rxtd" };
char zeroes[512];
extern char *val;
extern char table[256];
struct rt_dir
rt_dir[RT_DIRSIZE] = {{{4,0,1,0,14},{0,RT_NULL,{0,0,0},494,0}, {0,RT_ESEG}}};
int rt_entsiz;
int rt_nleft;
struct rt_ent *rt_curend[RT_DIRSIZE];
int floppydes;
int dirdirty;
char *rt_last;
char *defdev = "/dev/floppy";
char *opt = { "vf" };
int signum[] = {SIGHUP, SIGINT, SIGQUIT, 0};
long lseek();
int rcmd();
int dcmd();
int xcmd();
int tcmd();
int (*comfun)();
char flg[26];
char **namv;
int namc;
int file;
main(argc, argv)
char *argv[];
{
register char *cp;
/* register i;
for(i=0; signum[i]; i++)
if(signal(signum[i], SIG_IGN) != SIG_IGN)
signal(signum[i], sigdone); */
if(argc < 2)
usage();
cp = argv[1];
for(cp = argv[1]; *cp; cp++)
switch(*cp) {
case 'm':
case 'v':
case 'u':
case 'w':
flg[*cp - 'a']++;
continue;
case 'c':
{
#define SURE "Are you sure you want to clobber the floppy?\n"
int tty;
char response[128];
tty = open("/dev/tty",2);
write(tty,SURE,sizeof(SURE));
read(tty,response,sizeof(response));
if(*response!='y')
exit(50);
flag('c')++;
close(tty);
}
dirdirty++;
continue;
case 'r':
setcom(rcmd);
flag('r')++;
continue;
case 'd':
setcom(dcmd);
flag('d')++;
continue;
case 'x':
setcom(xcmd);
continue;
case 't':
setcom(tcmd);
continue;
case 'f':
defdev = argv[2];
argv++;
argc--;
continue;
default:
fprintf(stderr, "arff: bad option `%c'\n", *cp);
exit(1);
}
namv = argv+2;
namc = argc-2;
if(comfun == 0) {
if(flag('u') == 0) {
fprintf(stderr, "arff: one of [%s] must be specified\n", man);
exit(1);
}
setcom(rcmd);
}
(*comfun)();
exit(notfound());
}
setcom(fun)
int (*fun)();
{
if(comfun != 0) {
fprintf(stderr, "arff: only one of [%s] allowed\n", man);
exit(1);
}
comfun = fun;
}
usage()
{
fprintf(stderr, "usage: arff [%s][%s] archive files ...\n", opt, man);
exit(1);
}
notfound()
{
register i, n;
n = 0;
for(i=0; i<namc; i++)
if(namv[i]) {
fprintf(stderr, "arff: %s not found\n", namv[i]);
n++;
}
return(n);
}
phserr()
{
fprintf(stderr, "arff: phase error on %s\n", file);
}
mesg(c, name)
char *name;
{
if(flag('v'))
if(c != 'c' || flag('v') > 1)
printf("%c - %s\n", c, name);
}
tcmd()
{
register char *de;
int segnum;
register char *last;
FLDOPE *lookup(), *dope;
int nleft; register i;
register struct rt_ent *rde;
rt_init();
if(namc==0)
for (segnum=0; segnum >= 0; /* for all dir. segments */
segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) {
last = rt_last + segnum*2*RT_BLOCK;
for(de=((char *)&rt_dir[segnum])+10; de <= last;
de += rt_entsiz) {
if(rtls(rt(de))) {
nleft = (last - de) / rt_entsiz;
printf("\n%d entries remaining",nleft);
printf(" in directory segment %d.\n",segnum+1);
break;
}
}
}
else
for(i = 0; i < namc; i++) {
if(dope = lookup(namv[i])) {
rde = dope->rtdope;
rtls(rde);
namv[i] = 0;
}
}
}
rtls(de)
register struct rt_ent *de;
{
int month,day,year;
char name[12], ext[4];
if(flag('v'))
switch(de->rt_stat) {
case RT_TEMP:
printf("Tempfile:\n");
case RT_FILE:
unrad50(2,de->rt_name,name);
unrad50(1,&(de->rt_name[2]),ext);
day = de->rt_date.rt_dy;
year = de->rt_date.rt_yr + 72;
month = de->rt_date.rt_mo;
printf("%6.6s %3.3s %02d/%02d/%02d %d\n",name,
ext,month,day,year,de->rt_len);
break;
case RT_NULL:
printf("%-25.9s %d\n","<UNUSED>",de->rt_len);
break;
case RT_ESEG:
return(1);
}
else {
switch(de->rt_stat) {
case RT_TEMP:
case RT_FILE:
sunrad50(name,de->rt_name);
printf(name);putchar('\n');
break;
case RT_ESEG:
return(1);
case RT_NULL:
break;
}
}
return(0);
}
xcmd()
{
register char *de;
int segnum;
register char *last;
char name[12];
register int i;
rt_init();
if(namc==0)
for (segnum=0; segnum >= 0; /* for all dir. segments */
segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) {
last = rt_last + segnum*2*RT_BLOCK;
for(de=((char *)&rt_dir[segnum])+10; de <= last;
de += rt_entsiz) {
sunrad50(name,rt(de)->rt_name);
rtx(name);
}
}
else
for(i = 0; i < namc; i++)
if(rtx(namv[i])==0) namv[i] = 0;
}
rtx(name)
char *name;
{
register FLDOPE *dope;
FLDOPE *lookup();
register startad, count;
int file; char buff[RT_BLOCK];
if(dope = lookup(name)) {
mesg('x', name);
file = creat(name, 0666);
if(file < 0) return(1);
count = dope->count;
startad = dope->startad;
for( ; count > 0 ; count -= RT_BLOCK) {
lread(startad,RT_BLOCK,buff);
write(file,buff,RT_BLOCK);
startad += RT_BLOCK;
}
close(file);
return(0);
}
return(1);
}
rt_init()
{
static initized = 0;
register char *de;
register i;
int dirnum;
char *mode;
register char *last;
FILE *temp_floppydes;
if(initized) return;
initized = 1;
if(flag('c') || flag('d') || flag('r'))
mode = "r+";
else
mode = "r";
if((temp_floppydes = fopen(defdev, mode)) == NULL) {
perror(defdev);
exit(1);
}
floppydes = fileno(temp_floppydes);
if(flag('c')==0) {
lread(6*RT_BLOCK,2*RT_BLOCK,(char *)&rt_dir[0]);
dirnum = rt_dir[0].rt_axhead.rt_numseg;
if (dirnum > RT_DIRSIZE) {
fprintf(stderr,"arff: too many directory segments\n");
exit(1);
}
for (i=1; i<dirnum; i++)
lread((6+2*i)*RT_BLOCK,2*RT_BLOCK,(char *)&rt_dir[i]);
} else
dirnum = 1;
rt_entsiz = 2*rt_dir[0].rt_axhead.rt_entpad + 14;
rt_entsiz = 14; /* assume rt_entpad = 0 ??? */
rt_last = ((char *) &rt_dir[0]) + 10 + 1014/rt_entsiz*rt_entsiz;
rt_nleft = 0;
for (i=0; i<dirnum; i++) {
if (rt_dir[i].rt_axhead.rt_nxtseg >= RT_DIRSIZE
|| rt_dir[i].rt_axhead.rt_lstseg >= RT_DIRSIZE) {
fprintf(stderr, "arff: awful directory linkage\n");
exit(1);
}
last = rt_last + i*2*RT_BLOCK;
for(de=((char *)&rt_dir[i])+10; de <= last; de += rt_entsiz) {
if(rt(de)->rt_stat==RT_ESEG) break;
}
rt_curend[i] = rt(de);
rt_nleft += (last - de) / rt_entsiz;
}
}
static FLDOPE result;
FLDOPE *
lookup(name)
char * name;
{
unsigned short rname[3];
register char *de;
int segnum;
register char *last;
register index;
srad50(name,rname);
/*
* Search for name, accumulate blocks in index
*/
rt_init();
for (segnum=0; segnum >= 0; /* for all dir. segments */
segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) {
index = 0;
last = rt_last + segnum*2*RT_BLOCK;
for(de=((char *)&rt_dir[segnum])+10;
rt(de)->rt_stat != RT_ESEG; de += rt_entsiz) {
switch(rt(de)->rt_stat) {
case RT_FILE:
case RT_TEMP:
if(samename(rname,rt(de)->rt_name))
goto found;
case RT_NULL:
index += rt(de)->rt_len;
}
}
}
return((FLDOPE *) 0);
found: result.count = rt(de)->rt_len * RT_BLOCK;
result.startad = RT_BLOCK * (rt_dir[segnum].rt_axhead.rt_stfile + index);
result.rtdope = (struct rt_ent *) de;
return(&result);
}
static
samename(a,b)
unsigned short a[3],b[3];
{
return( a[0]==b[0] && a[1]==b[1] && a[2]==b[2] );
}
rad50(cp,out)
register unsigned char *cp;
unsigned short *out;
{
register index;
register temp;
for(index = 0;*cp; index++) {
temp = Ain1 * table[*cp++];
if(*cp!=0) {
temp += Ain2 * table[*cp++];
if(*cp!=0)
temp += table[*cp++];
}
out[index] = temp;
}
}
#define reduce(x,p,q) \
(x = v[p/q], p %= q);
unrad50(count,in,cp)
unsigned short *in;
register char *cp;
{
register i, temp; register unsigned char *v = (unsigned char *) val;
for(i = 0; i < count; i++) {
temp = in[i];
reduce (*cp++,temp,Ain1);
reduce (*cp++,temp,Ain2);
reduce (*cp++,temp,1);
}
*cp=0;
}
srad50(name,rname)
register char * name;
register unsigned short *rname;
{
register index; register char *cp;
char file[7],ext[4];
/*
* Find end of pathname
*/
for(cp = name; *cp++; );
while(cp >= name && *--cp != '/');
cp++;
/*
* Change to rad50
*
*/
for(index = 0; *cp; ){
file[index++] = *cp++;
if(*cp=='.') {
cp++;
break;
}
if(index>=6) {
break;
}
}
file[index] = 0;
for(index = 0; *cp; ){
ext[index++] = *cp++;
if(*cp=='.' || index>=3) {
break;
}
}
ext[index]=0;
rname[0] = 0;
rname[1] = 0;
rname[2] = 0;
rad50((unsigned char *)file,rname);
rad50((unsigned char *)ext,rname+2);
}
sunrad50(name,rname)
unsigned short rname[3];
register char *name;
{
register char *cp, *cp2;
char ext[4];
unrad50(2,rname,name);
unrad50(1,rname + 2,ext);
/* Jam name and extension together with a dot
deleting white space */
for(cp = name; *cp++;);--cp; while(*--cp==' ' && cp>=name);
*++cp = '.';cp++;
for(cp2=ext; *cp2!=' ' && cp2 < ext + 3;) {
*cp++ = *cp2++;
}
*cp=0;
if(cp[-1]=='.') cp[-1] = 0;
}
static char *oval = " ABCDEFGHIJKLMNOPQRSTUVWXYZ$.@0123456789";
static char *val = " abcdefghijklmnopqrstuvwxyz$.@0123456789";
static char table[256] = {
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
0, 29, 29, 29, 27, 29, 29, 29, 29, 29, 29, 29, 29, 29, 28, 29,
30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 29, 29, 29, 29, 29, 29,
29, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29, 29, 29, 29, 29,
29, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
0, 29, 29, 29, 27, 29, 29, 29, 29, 29, 29, 29, 29, 29, 28, 29,
30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 29, 29, 29, 29, 29, 29,
29, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29, 29, 29, 29, 29,
29, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29, 29, 29, 29 };
long
trans(logical)
register int logical;
{
/* Logical to physical adress translation */
register int sector, bytes, track;
logical += 26 * 128;
bytes = (logical & 127);
logical >>= 7;
sector = logical % 26;
if(sector >= 13)
sector = sector *2 +1;
else
sector *= 2;
sector += 26 + ((track = (logical / 26)) - 1) * 6;
sector %= 26;
return( (((track *26) + sector) << 7) + bytes);
}
lread(startad,count,obuff)
register startad, count;
register char * obuff;
{
long trans();
extern floppydes;
int chunk;
rt_init();
if(flag('m')==0)
chunk = FL_BLOCK;
else
chunk = RT_BLOCK;
for (; count > 0; count -= chunk, obuff += chunk, startad += chunk) {
lseek(floppydes,
(long) (flag('m') ? startad : trans(startad)), 0);
if (read(floppydes, obuff, chunk) != chunk)
fprintf(stderr, "arff: read error, block %d\n", startad / RT_BLOCK);
}
}
lwrite(startad,count,obuff)
register startad, count;
register char * obuff;
{
long trans();
extern floppydes;
int chunk;
rt_init();
if(flag('m')==0)
chunk = FL_BLOCK;
else
chunk = RT_BLOCK;
for (; count > 0; count -= chunk, obuff += chunk, startad += chunk) {
lseek(floppydes,
(long) (flag('m') ? startad : trans(startad)), 0);
if (write(floppydes, obuff, chunk) != chunk)
fprintf(stderr, "arff: write error, block %d\n", startad / RT_BLOCK);
}
}
rcmd()
{
register int i;
rt_init();
if (namc>0)
for(i = 0; i < namc; i++)
if(rtr(namv[i])==0) namv[i]=0;
}
rtr(name)
char *name;
{
register FLDOPE *dope;
struct stat buf;
FLDOPE *flcreat();
if(stat(name,&buf)<0) {
perror(name);
return (-1);
}
if ((dope = flcreat(name, buf.st_size, buf.st_mtime)) == NULL)
return (-1);
mesg('r', name);
toflop(name, buf.st_size, dope);
return (0);
}
FLDOPE *
flcreat(name, size, mtime)
char *name;
long size;
time_t mtime;
{
register FLDOPE *dope;
register struct rt_ent *de;
int segnum;
if ((dope = lookup(name)) != NULL
&& size <= dope->rtdope->rt_len * RT_BLOCK)
return (dope);
for (segnum=0; segnum != -1; segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) {
for(de = rt_dir[segnum].rt_ents; de->rt_stat != RT_ESEG; de++)
if (de->rt_stat == RT_NULL
&& size <= de->rt_len * RT_BLOCK) {
if (dope)
delete(dope);
mkent(de, segnum, size, name, mtime);
goto found;
}
}
printf("%s: no slot or no space for file\n", name);
return (NULL);
found:
if (dope = lookup(name))
return (dope);
fprintf(stderr, "%s: internal error, added then not found\n", name);
return (NULL);
}
mkent(de,segnum,size,name,mtime)
register struct rt_ent *de;
int segnum;
long size;
char *name;
time_t mtime;
{
struct tm *localtime(); register struct tm *timp;
register struct rt_ent *workp; int count;
count = (((size - 1)/RT_BLOCK) + 1);
/* Make sure there is room */
if(de->rt_len==count)
goto overwrite;
if(rt_curend[segnum] == (rt_last + (segnum*2*RT_BLOCK))) {
/* no entries left on segment */
if(flag('o'))
goto overwrite;
fprintf(stderr,"Directory segment #%d full on %s\n",segnum+1,
defdev);
exit(1);
}
/* copy directory entries up */
for(workp = rt_curend[segnum]+1; workp > de; workp--)
*workp = workp[-1];
de[1].rt_len -= count;
de->rt_len = count;
rt_curend[segnum]++;
rt_nleft--;
overwrite:
srad50(name,de->rt_name);
timp = localtime(&mtime);
de->rt_date.rt_dy = timp->tm_mday + 1;
de->rt_date.rt_mo = timp->tm_mon + 1;
de->rt_date.rt_yr = timp->tm_year - 72;
de->rt_stat = RT_FILE;
de->rt_pad = 0;
de->rt_chan = 0;
de->rt_job = 0;
lwrite((6+segnum*2)*RT_BLOCK,2*RT_BLOCK,(char *)&rt_dir[segnum]);
}
toflop(name,ocount,dope)
char *name;
register FLDOPE *dope;
long ocount;
{
register file, n, startad = dope->startad, count = ocount;
char buff[RT_BLOCK];
file = open(name,0);
if(file < 0) {
fprintf(stderr, "arff: couldn't open %s\n",name);exit(1);}
for( ; count >= RT_BLOCK; count -= RT_BLOCK) {
read(file,buff,RT_BLOCK);
lwrite(startad,RT_BLOCK,buff);
startad += RT_BLOCK;
}
read(file,buff,count);
close(file);
if(count <= 0) return;
for(n = count; n < RT_BLOCK; n ++) buff[n] = 0;
lwrite(startad,RT_BLOCK,buff);
count = (dope->rtdope->rt_len * RT_BLOCK - ocount) / RT_BLOCK ;
if(count <= 0) return;
for( ; count > 0 ; count--) {
startad += RT_BLOCK;
lwrite(startad,RT_BLOCK,zeroes);
}
}
dcmd()
{
register int i;
rt_init();
if(namc)
for(i = 0; i < namc; i++)
if(rtk(namv[i])==0) namv[i]=0;
if(dirdirty)
scrunch();
}
rtk(name)
char *name;
{
FLDOPE *dope;
register struct rt_ent *de;
FLDOPE *lookup();
if(dope = lookup(name)) {
mesg('d', name);
delete(dope);
return(0);
}
return(1);
}
delete(dope)
FLDOPE *dope;
{
register struct rt_ent *de;
de = dope->rtdope;
de->rt_stat = RT_NULL;
de->rt_name[0] = 0;
de->rt_name[1] = 0;
de->rt_name[2] = 0;
* ((unsigned short *) & (de->rt_date)) = 0;
dirdirty = 1;
}
scrunch() {
register struct rt_ent *de , *workp;
register segnum;
for (segnum=0; segnum != -1; /* for all dir. segments */
segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) {
dirdirty = 0;
for(de = rt_dir[segnum].rt_ents; de <= rt_curend[segnum]; de++) {
if(de->rt_stat==RT_NULL && de[1].rt_stat==RT_NULL) {
(de+1)->rt_len += de->rt_len;
for(workp = de; workp < rt_curend[segnum]; workp++)
*workp = workp[1];
de--;
rt_curend[segnum]--;
rt_nleft++;
dirdirty = 1;
}
}
if (dirdirty)
lwrite((6+segnum*2)*RT_BLOCK,2*RT_BLOCK,(char *)&rt_dir[segnum]);
}
}