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[unix-history] / sys / isofs / isofs_rrip.c
/*
* Copyright (c) 1993 Atsushi Murai (amurai@spec.co.jp)
* 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:
* 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 Atsushi Murai(amurai@spec.co.jp)``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.
*
* $Id: isofs_rrip.c,v 1.4 1993/11/25 01:32:27 wollman Exp $
*/
#include "param.h"
#include "systm.h"
#include "namei.h"
#include "buf.h"
#include "file.h"
#include "vnode.h"
#include "mount.h"
#include "kernel.h"
#include "sys/time.h"
#include "iso.h"
#include "isofs_node.h"
#include "isofs_rrip.h"
#include "iso_rrip.h"
/*
* POSIX file attribute
*/
static int isofs_rrip_attr( p, ana )
ISO_RRIP_ATTR *p;
ISO_RRIP_ANALYZE *ana;
{
ana->inode.iso_mode = isonum_731(p->mode_l);
ana->inode.iso_uid = (uid_t)isonum_731(p->uid_l);
ana->inode.iso_gid = (gid_t)isonum_731(p->gid_l);
/* ana->inode.iso_links = isonum_731(p->links_l); */
return 0;
}
int isofs_rrip_defattr( isodir, ana )
struct iso_directory_record *isodir;
ISO_RRIP_ANALYZE *ana;
{
ana->inode.iso_mode = (VREAD|VEXEC|(VREAD|VEXEC)>>3|(VREAD|VEXEC)>>6);
ana->inode.iso_uid = (uid_t)0;
ana->inode.iso_gid = (gid_t)0;
return 0;
}
/*
* POSIX device modes
*/
static int isofs_rrip_device( p, ana )
ISO_RRIP_DEVICE *p;
ISO_RRIP_ANALYZE *ana;
{
char buf[3];
buf[0] = p->h.type[0];
buf[1] = p->h.type[1];
buf[2] = 0x00;
printf("isofs:%s[%d] high=0x%08x, low=0x%08x\n",
buf,
isonum_711(p->h.length),
isonum_731(p->dev_t_high_l),
isonum_731(p->dev_t_low_l)
);
return 0;
}
/*
* Symbolic Links
*/
static int isofs_rrip_slink( p, ana )
ISO_RRIP_SLINK *p;
ISO_RRIP_ANALYZE *ana;
{
return 0;
}
/*
* Alternate name
*/
static int isofs_rrip_altname( p, ana )
ISO_RRIP_ALTNAME *p;
ISO_RRIP_ANALYZE *ana;
{
return 0;
}
/*
* Child Link
*/
static int isofs_rrip_clink( p, ana )
ISO_RRIP_CLINK *p;
ISO_RRIP_ANALYZE *ana;
{
char buf[3];
buf[0] = p->h.type[0];
buf[1] = p->h.type[1];
buf[2] = 0x00;
printf("isofs:%s[%d] loc=%d\n",
buf,
isonum_711(p->h.length),
isonum_733(p->dir_loc)
);
ana->inode.iso_cln = isonum_733(p->dir_loc);
return 0;
}
/*
* Parent Link
*/
static int isofs_rrip_plink( p, ana )
ISO_RRIP_PLINK *p;
ISO_RRIP_ANALYZE *ana;
{
char buf[3];
buf[0] = p->h.type[0];
buf[1] = p->h.type[1];
buf[2] = 0x00;
printf("isofs:%s[%d] loc=%d\n",
buf,
isonum_711(p->h.length),
isonum_733(p->dir_loc)
);
ana->inode.iso_pln = isonum_733(p->dir_loc);
return 0;
}
/*
* Relocated directory
*/
static int isofs_rrip_reldir( p, ana )
ISO_RRIP_RELDIR *p;
ISO_RRIP_ANALYZE *ana;
{
char buf[3];
buf[0] = p->h.type[0];
buf[1] = p->h.type[1];
buf[2] = 0x00;
printf("isofs:%s[%d]\n",buf, isonum_711(p->h.length) );
return 0;
}
/*
* Time stamp
*/
static void isofs_rrip_tstamp_conv7(pi, pu)
char *pi;
struct timeval *pu;
{
int i;
int crtime,days;
int year,month,day,hour,minute,second,tz;
year = pi[0] - 70;
month = pi[1];
day = pi[2];
hour = pi[3];
minute = pi[4];
second = pi[5];
tz = pi[6];
if (year < 0) {
crtime = 0;
} else {
int monlen[12] = {31,28,31,30,31,30,31,31,30,31,30,31};
days = year * 365;
if (year > 2)
days += (year+2) / 4;
for (i = 1; i < month; i++)
days += monlen[i-1];
if (((year+2) % 4) == 0 && month > 2)
days++;
days += day - 1;
crtime = ((((days * 24) + hour) * 60 + minute) * 60)
+ second;
/* sign extend */
if (tz & 0x80)
tz |= (-1 << 8);
/* timezone offset is unreliable on some disks */
if (-48 <= tz && tz <= 52)
crtime += tz * 15 * 60;
}
pu->tv_sec = crtime;
pu->tv_usec = 0;
}
static unsigned isofs_chars2ui( begin, end )
unsigned char *begin;
unsigned char *end;
{
unsigned rc=0;
int len;
int wlen;
static int pow[]={ 1, 10, 100, 1000 };
len = end - begin;
wlen= len;
for (; len >= 0; len -- ) {
rc += ( *(begin+len) * pow[wlen - len] );
}
return( rc );
}
static void isofs_rrip_tstamp_conv17(pi, pu)
unsigned char *pi;
struct timeval *pu;
{
unsigned char buf[7];
/* year:"0001"-"9999" -> -1900 */
buf[0] = (unsigned char)(isofs_chars2ui( &pi[0], &pi[3]) - 1900 );
/* month: " 1"-"12" -> 1 - 12 */
buf[1] = (unsigned char)isofs_chars2ui( &pi[4], &pi[5]);
/* day: " 1"-"31" -> 1 - 31 */
buf[2] = isofs_chars2ui( &pi[6], &pi[7]);
/* hour: " 0"-"23" -> 0 - 23 */
buf[3] = isofs_chars2ui( &pi[8], &pi[9]);
/* minute:" 0"-"59" -> 0 - 59 */
buf[4] = isofs_chars2ui( &pi[10], &pi[11] );
/* second:" 0"-"59" -> 0 - 59 */
buf[5] = isofs_chars2ui( &pi[12], &pi[13] );
/* difference of GMT */
buf[6] = pi[16];
isofs_rrip_tstamp_conv7(buf, pu);
}
static int isofs_rrip_tstamp( p, ana )
ISO_RRIP_TSTAMP *p;
ISO_RRIP_ANALYZE *ana;
{
unsigned char *ptime;
ptime = p->time;
/* Check a format of time stamp (7bytes/17bytes) */
if ( !(*p->flags & ISO_SUSP_TSTAMP_FORM17 ) ) {
isofs_rrip_tstamp_conv7(ptime, &ana->inode.iso_ctime );
if ( *p->flags & ISO_SUSP_TSTAMP_MODIFY )
isofs_rrip_tstamp_conv7(ptime+7, &ana->inode.iso_mtime );
else
ana->inode.iso_mtime = ana->inode.iso_ctime;
if ( *p->flags & ISO_SUSP_TSTAMP_ACCESS )
isofs_rrip_tstamp_conv7(ptime+14, &ana->inode.iso_atime );
else
ana->inode.iso_atime = ana->inode.iso_ctime;
} else {
isofs_rrip_tstamp_conv17(ptime, &ana->inode.iso_ctime );
if ( *p->flags & ISO_SUSP_TSTAMP_MODIFY )
isofs_rrip_tstamp_conv17(ptime+17, &ana->inode.iso_mtime );
else
ana->inode.iso_mtime = ana->inode.iso_ctime;
if ( *p->flags & ISO_SUSP_TSTAMP_ACCESS )
isofs_rrip_tstamp_conv17(ptime+34, &ana->inode.iso_atime );
else
ana->inode.iso_atime = ana->inode.iso_ctime;
}
return 0;
}
int isofs_rrip_deftstamp( isodir, ana )
struct iso_directory_record *isodir;
ISO_RRIP_ANALYZE *ana;
{
isofs_rrip_tstamp_conv7(isodir->date, &ana->inode.iso_ctime );
ana->inode.iso_atime = ana->inode.iso_ctime;
ana->inode.iso_mtime = ana->inode.iso_ctime;
return 0;
}
/*
* Flag indicating
* Nothing to do....
*/
static int isofs_rrip_idflag( p, ana )
ISO_RRIP_IDFLAG *p;
ISO_RRIP_ANALYZE *ana;
{
char buf[3];
buf[0] = p->h.type[0];
buf[1] = p->h.type[1];
buf[2] = 0x00;
printf("isofs:%s[%d] idflag=0x%x\n",
buf,
isonum_711(p->h.length),
p->flags );
return 0;
}
/*
* Extension reference
* Nothing to do....
*/
static int isofs_rrip_exflag( p, ana )
ISO_RRIP_EXFLAG *p;
ISO_RRIP_ANALYZE *ana;
{
char buf[3];
buf[0] = p->h.type[0];
buf[1] = p->h.type[1];
buf[2] = 0x00;
printf("isofs:%s[%d] exflag=0x%x",
buf,
isonum_711(p->h.length),
p->flags );
return 0;
}
/*
* Unknown ...
* Nothing to do....
*/
static int isofs_rrip_unknown( p, ana )
ISO_RRIP_EXFLAG *p;
ISO_RRIP_ANALYZE *ana;
{
return 0;
}
typedef struct {
char type[2];
int (*func)();
int (*func2)();
int result;
} RRIP_TABLE;
static RRIP_TABLE rrip_table [] = {
{ 'P', 'X', isofs_rrip_attr, isofs_rrip_defattr, ISO_SUSP_ATTR },
{ 'T', 'F', isofs_rrip_tstamp, isofs_rrip_deftstamp, ISO_SUSP_TSTAMP },
{ 'N', 'M', isofs_rrip_altname,0, ISO_SUSP_ALTNAME },
{ 'C', 'L', isofs_rrip_clink, 0, ISO_SUSP_CLINK },
{ 'P', 'L', isofs_rrip_plink, 0, ISO_SUSP_PLINK },
{ 'S', 'L', isofs_rrip_slink, 0, ISO_SUSP_SLINK },
{ 'R', 'E', isofs_rrip_reldir, 0, ISO_SUSP_RELDIR },
{ 'P', 'N', isofs_rrip_device, 0, ISO_SUSP_DEVICE },
{ 'R', 'R', isofs_rrip_idflag, 0, ISO_SUSP_IDFLAG },
{ 'E', 'R', isofs_rrip_exflag, 0, ISO_SUSP_EXFLAG },
{ 'S', 'P', isofs_rrip_unknown,0, ISO_SUSP_UNKNOWN },
{ 'C', 'E', isofs_rrip_unknown,0, ISO_SUSP_UNKNOWN }
};
int isofs_rrip_analyze ( isodir, analyze )
struct iso_directory_record *isodir;
ISO_RRIP_ANALYZE *analyze;
{
register RRIP_TABLE *ptable;
register ISO_SUSP_HEADER *phead;
register ISO_SUSP_HEADER *pend;
int found;
int i;
char *pwhead;
int result;
/*
* Note: If name length is odd,
* it will be padding 1 byte after the name
*/
pwhead = isodir->name + isonum_711(isodir->name_len);
if ( !(isonum_711(isodir->name_len) & 0x0001) )
pwhead ++;
phead = (ISO_SUSP_HEADER *)pwhead;
pend = (ISO_SUSP_HEADER *)( (char *)isodir + isonum_711(isodir->length) );
result = 0;
if ( pend == phead ) {
goto setdefault;
}
/*
* Note: "pend" should be more than one SUSP header
*/
while ( pend >= phead + 1) {
found = 0;
for ( ptable=&rrip_table[0];ptable < &rrip_table[sizeof(rrip_table)/sizeof(RRIP_TABLE)]; ptable ++) {
if ( bcmp( phead->type, ptable->type, 2 ) == 0 ) {
found = 1;
ptable->func( phead, analyze );
result |= ptable->result;
break;
}
}
if ( found == 0 ) {
printf("isofs: name '");
for ( i =0; i < isonum_711(isodir->name_len) ;i++) {
printf("%c", *(isodir->name + i) );
}
printf("'");
printf(" - type %c%c [%08x/%08x]...not found\n",
phead->type[0], phead->type[1], phead, pend );
isofs_hexdump( phead, (int)( (char *)pend - (char *)phead ) );
break;
}
/*
* move to next SUSP
*/
phead = (ISO_SUSP_HEADER *) ((unsigned)isonum_711(phead->length) + (char *)phead);
}
setdefault:
/*
* If we don't find the Basic SUSP stuffs, just set default value
* ( attribute/time stamp )
*/
for ( ptable=&rrip_table[0];ptable < &rrip_table[2]; ptable ++) {
if ( ptable->func2 != 0 && !(ptable->result & result) ) {
ptable->func2( isodir, analyze );
}
}
return ( result );
}
/*
* Get Alternate Name from 'AL' record
* If either no AL record nor 0 lenght,
* it will be return the translated ISO9660 name,
*/
int isofs_rrip_getname( isodir, outbuf, outlen )
struct iso_directory_record *isodir;
char *outbuf;
int *outlen;
{
ISO_SUSP_HEADER *phead, *pend;
ISO_RRIP_ALTNAME *p;
char *pwhead;
int found;
/*
* Note: If name length is odd,
* it will be padding 1 byte after the name
*/
pwhead = isodir->name + isonum_711(isodir->name_len);
if ( !(isonum_711(isodir->name_len) & 0x0001) )
pwhead ++;
phead = (ISO_SUSP_HEADER *)pwhead;
pend = (ISO_SUSP_HEADER *)( (char *)isodir + isonum_711(isodir->length) );
found = 0;
if ( pend != phead ) {
while ( pend >= phead + 1) {
if ( bcmp( phead->type, "NM", 2 ) == 0 ) {
found = 1;
break;
}
phead = (ISO_SUSP_HEADER *) ((unsigned)isonum_711(phead->length) + (char *)phead);
}
}
if ( found == 1 ) {
p = (ISO_RRIP_ALTNAME *)phead;
*outlen = isonum_711( p->h.length ) - sizeof( ISO_RRIP_ALTNAME );
bcopy( (char *)( &p->flags + 1 ), outbuf, *outlen );
} else {
isofntrans(isodir->name, isonum_711(isodir->name_len), outbuf, outlen );
if ( *outlen == 1) {
switch ( outbuf[0] ) {
case 0:
outbuf[0] = '.';
break;
case 1:
outbuf[0] = '.';
outbuf[1] = '.';
*outlen = 2;
}
}
}
return( found );
}
/*
* Get Symbolic Name from 'SL' record
*
* Note: isodir should contains SL record!
*/
int isofs_rrip_getsymname( vp, isodir, outbuf, outlen )
struct vnode *vp;
struct iso_directory_record *isodir;
char *outbuf;
int *outlen;
{
register ISO_RRIP_SLINK_COMPONENT *pcomp;
register ISO_SUSP_HEADER *phead, *pend;
register ISO_RRIP_SLINK_COMPONENT *pcompe;
ISO_RRIP_SLINK *p;
char *pwhead;
int found;
int slash;
int wlen;
/*
* Note: If name length is odd,
* it will be padding 1 byte after the name
*/
pwhead = isodir->name + isonum_711(isodir->name_len);
if ( !(isonum_711(isodir->name_len) & 0x0001) )
pwhead ++;
phead = (ISO_SUSP_HEADER *)pwhead;
pend = (ISO_SUSP_HEADER *)( (char *)isodir + isonum_711(isodir->length) );
found = 0;
if ( pend != phead ) {
while ( pend >= phead + 1) {
if ( bcmp( phead->type, "SL", 2 ) == 0 ) {
found = 1;
break;
}
phead = (ISO_SUSP_HEADER *) ((unsigned)isonum_711(phead->length) + (char *)phead);
}
}
if ( found == 0 ) {
*outlen = 0;
return( found );
}
p = (ISO_RRIP_SLINK *)phead;
pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
/*
* Gathering a Symbolic name from each component with path
*/
*outlen = 0;
slash = 0;
while ( pcomp < pcompe ) {
/* Inserting Current */
if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_CURRENT ) {
bcopy("./", outbuf+*outlen, 2);
*outlen += 2;
slash = 0;
}
/* Inserting Parent */
if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_PARENT ) {
bcopy("../", outbuf+*outlen, 3);
*outlen += 3;
slash = 0;
}
/* Inserting slash for ROOT */
if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_ROOT ) {
bcopy("/", outbuf+*outlen, 1);
*outlen += 1;
slash = 0;
}
/* Inserting a mount point i.e. "/cdrom" */
if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_VOLROOT ) {
wlen = strlen(vp->v_mount->mnt_stat.f_mntonname);
bcopy(vp->v_mount->mnt_stat.f_mntonname,outbuf+*outlen, wlen);
*outlen += wlen;
slash = 1;
}
/* Inserting hostname i.e. "tama:" */
if ( pcomp->cflag[0] & ISO_SUSP_CFLAG_HOST ) {
bcopy(hostname, outbuf+*outlen, hostnamelen);
*(outbuf+hostnamelen) = ':';
*outlen += (hostnamelen + 1);
slash = 0; /* Uuum Should we insert a slash ? */
}
/* Inserting slash for next component */
if ( slash == 1 ) {
outbuf[*outlen] = '/';
*outlen += 1;
slash = 0;
}
/* Inserting component */
wlen = isonum_711(pcomp->clen);
if ( wlen != 0 ) {
bcopy( pcomp->name, outbuf + *outlen, wlen );
*outlen += wlen;
slash = 1;
}
/*
* Move to next component...
*/
pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp
+ sizeof(ISO_RRIP_SLINK_COMPONENT) - 1
+ isonum_711(pcomp->clen));
}
return( found );
}
/* Hexdump routine for debug*/
int isofs_hexdump( p, size )
unsigned char *p;
int size;
{
int i,j,k;
unsigned char *wp;
for ( i = 0; i < size; i += 16 ) {
printf("isofs: ");
wp = p;
k = ( (size - i) > 16 ? 16 : size - i );
for ( j =0; j < k; j ++ ){
printf("%02x ", *p );
p++;
}
printf(" : ");
p = wp;
for ( j =0; j < k; j ++ ){
if ( (*p > 0x20) && (*p < 0x7f) )
printf("%c", *p );
else
printf(" ");
p++;
}
printf("\n");
}
printf("\n");
return 0;
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.