bool iso9660::fclose(file_table *temp2) //change
{
file_table *temp,*temp1;
int count,t;
/////////////change
temp=ft_head;
if(temp->next!=0 && temp!=0)
{
//disp1.printf("\nhead address %x",ft_head->next);
while(temp->next!=temp2 && temp->next!=0)
{
temp=temp->next;
}
if(temp!=0)
{
temp->next=temp2->next;
klm.kdfree(&temp2,sizeof(file_table));
disp1.printf("\nSuccessfully closed the file");
return 1;
}
else
{
disp1.printf("\nFile not found in the file table");
return 0;
}
}
else
{
disp1.printf("\nNo file table is created");
return 0;
}
}
bool iso9660::move_to_dir(char *path)
{
int flag,bp,prv_fldr=1,f_cnt,g,st=0,i=0,j,file_flag=0,folder_flag=0,k,count;
unsigned char tname[30],*bf,*bf2;
short int file_location,parent;
if((pr.pts%512)==0)
count=pr.pts/512;
else
count=(pr.pts/512)+1;
bf=(unsigned char*) (klm.kdmalloc (count*512));
load_rdr(0,pr.rdr);
drv->pioread(pr.lptb*4,count,bf);
int off=0;
if(path[0]!='\0' && path[0]=='/')
{
path++;
}
while(path[i]!='\0')
{
load_ptb(0,bf);
off=0;
bp=0;
flag=0;
j=0;
if(i==0)
file_location=pt.loc_ext;
while(path[i]!='/' && path[i]!='\0')
{
tname[j++]=path[i++];
}
tname[j]='\0';
if(path[i]=='/' || path[i]=='\0')
{
if(path[i]!='\0')
i++;
while(off<pr.pts)
{
if(pt.len_di%2==0)
{
off=off+8+pt.len_di;
if(off!=pr.pts)
{
load_ptb(off,bf);
bp++;
}
if(prv_fldr!=pt.par_dir_no)
{
flag=0;
continue;
}
for(g=0;tname[g]!='\0' && tname[g]==pt.dir_id[g];++g);
//disp1.printf("\n%c %x",tname[g],g);
if((off==pr.pts && pt.len_di!=g)||(g==pt.len_di && parent==pt.par_dir_no && tname[g]!='\0'))
{
disp1.printf("\nInvalid Directory %s",tname);
return 0;
}
else if(g==pt.len_di && tname[g]=='\0')
{
file_location=pt.loc_ext;
parent=pt.par_dir_no;
prv_fldr=bp+1;
flag=1;
//disp1.printf("\nParent Directory of %s is %x",tname,parent);
break;
}
}
else
{
off=off+8+pt.len_di+1;
if(off!=pr.pts)
{
load_ptb(off,bf);
bp++;
}
if(prv_fldr!=pt.par_dir_no)
{
flag=0;
continue;
}
for(g=0;tname[g]!='\0' && tname[g]==pt.dir_id[g];g++);
// disp1.printf("\n%c %x",tname[g],g);
if((off==pr.pts && g!=pt.len_di)||(g==pt.len_di && parent==pt.par_dir_no && tname[g]!='\0'))
{
disp1.printf("\nInvalid Directory %s",tname);
return 0;
}
else if(g==pt.len_di && tname[g]=='\0')
{
file_location=pt.loc_ext;
parent=pt.par_dir_no;
prv_fldr=bp+1;
//disp1.printf("\nParent Directory of %s is %x",tname,parent);
flag=1;
break;
}
}
}
if(flag==0)
{
disp1.printf("\nCannot find the directory %s",tname);
return 0;
}
}
}
//disp1.printf("\nNonesense location %x %x",file_location,pr.lbs);
// disp1.printf("\n");
if(path[0]=='\0' && *(path-1)=='/' )
{
file_location=rd.loc_ext;
}
// cdfs_dir_addrs=file_location;
// cd_name=path;
cd_lba=file_location;
// disp1.printf("\nyou successfully moved to %s\n",path);
return 1;
}
bool iso9660::flist(char *path)
{
int flag,bp,prv_fldr=1,f_cnt,g,st=0,i=0,j,file_flag=0,folder_flag=0,k,count;
unsigned char tname[30],*bf,*bf2;
short int file_location,parent;
if((pr.pts%512)==0)
count=pr.pts/512;
else
count=(pr.pts/512)+1;
bf=(unsigned char*) (klm.kdmalloc (count*512));
drv->pioread(pr.lptb*4,count,bf);
int off=0;
load_rdr(0,pr.rdr);
if(path[0]!='\0' && path[0]=='/')
{
path++;
}
while(path[i]!='\0')
{
load_ptb(0,bf);
off=0;
bp=0;
flag=0;
j=0;
if(i==0)
file_location=pt.loc_ext;
while(path[i]!='/' && path[i]!='\0')
{
tname[j++]=path[i++];
}
tname[j]='\0';
if(path[i]=='/' || path[i]=='\0')
{
if(path[i]!='\0')
i++;
while(off<pr.pts)
{
if(pt.len_di%2==0)
{
off=off+8+pt.len_di;
if(off!=pr.pts)
{
load_ptb(off,bf);
bp++;
}
if(prv_fldr!=pt.par_dir_no)
{
flag=0;
continue;
}
for(g=0;tname[g]!='\0' && tname[g]==pt.dir_id[g];++g);
if((off==pr.pts && pt.len_di!=g)||(g==pt.len_di && parent==pt.par_dir_no && tname[g]!='\0'))
{
disp1.printf("\nInvalid Directory %s",tname);
return 0;
}
else if(g==pt.len_di && tname[g]=='\0')
{
file_location=pt.loc_ext;
parent=pt.par_dir_no;
prv_fldr=bp+1;
flag=1;
//disp1.printf("\nParent Directory of %s is %x",tname,parent);
break;
}
}
else
{
off=off+8+pt.len_di+1;
if(off!=pr.pts)
{
load_ptb(off,bf);
bp++;
}
if(prv_fldr!=pt.par_dir_no)
{
flag=0;
continue;
}
for(g=0;tname[g]!='\0' && tname[g]==pt.dir_id[g];++g);
if((off==pr.pts && g!=pt.len_di)||(g==pt.len_di && parent==pt.par_dir_no && tname[g]!='\0'))
{
disp1.printf("\nInvalid Directory %s",tname);
return 0;
}
else if(g==pt.len_di && tname[g]=='\0')
{
file_location=pt.loc_ext;
parent=pt.par_dir_no;
prv_fldr=bp+1;
//disp1.printf("\nParent Directory of %s is %x",tname,parent);
flag=1;
break;
}
}
}
if(flag==0)
{
disp1.printf("\nCannot find the directory %s",tname);
return 0;
}
}
}
//disp1.printf("\nNonesense location %x %x",file_location,pr.lbs);
//disp1.printf("\n");
if(path[0]=='\0' && *(path-1)=='/')
{
file_location=rd.loc_ext;
}
if((pr.lbs%512)==0)
count=pr.lbs/512;
else
count=(pr.lbs/512)+1;
bf2=(unsigned char*) (klm.kdmalloc (count*512));
drv->pioread(file_location*4,count,bf2);
off=0;
flag=0;
load_rdr(off,bf2);
off=off+rd.len_dir;
load_rdr(off,bf2);
off=off+rd.len_dir;
load_rdr(off,bf2);
int h;
while(rd.len_dir !=0)
{
if(rd.file_flag==0x00)
disp1.setattrib(0x02);
else
disp1.setattrib(0x01);
for(h=0;h<rd.len_file_id;++h)
disp1.printf("%c",rd.file_id[h]);
disp1.printf(" ");
off=off+rd.len_dir;
load_rdr(off,bf2);
}
disp1.printf("\n");
disp1.setattrib(0x0f);
return 1;
}
int iso9660::fopen(char *path,char *mod)
{
int flag,bp,prv_fldr=1,f_cnt,g,st=0,i=0,j,file_flag=0,folder_flag=0,k,count;
unsigned char tname[30],*bf,*bf2;
short int file_location,parent;
if((pr.pts%512)==0)
count=pr.pts/512;
else
count=(pr.pts/512)+1;
bf=(unsigned char*) (klm.kdmalloc (count*512));
drv->pioread(pr.lptb*4,count,bf);
int off=0;
path++;
while(path[i]!='\0')
{
load_ptb(0,bf);
off=0;
bp=0;
flag=0;
j=0;
if(i==0)
file_location=pt.loc_ext;
while(path[i]!='/' && path[i]!='\0')
{
tname[j++]=path[i++];
}
tname[j]='\0';
if(path[i]=='/')
{
i++;
while(off<pr.pts)
{
if(pt.len_di%2==0)
{
off=off+8+pt.len_di;
if(off!=pr.pts)
{
load_ptb(off,bf);
bp++;
}
if(prv_fldr!=pt.par_dir_no)
{
flag=0;
continue;
}
for(g=0;tname[g]!='\0' && tname[g]==pt.dir_id[g];++g);
if((off==pr.pts && pt.len_di!=g)||(g==pt.len_di && parent==pt.par_dir_no && tname[g]!='\0'))
{
disp1.printf("\nInvalid Directory %s",tname);
return 0;
}
else if(g==pt.len_di && tname[g]=='\0')
{
file_location=pt.loc_ext;
parent=pt.par_dir_no;
prv_fldr=bp+1;
flag=1;
//disp1.printf("\nParent Directory of %s is %x",tname,parent);
break;
}
}
else
{
off=off+8+pt.len_di+1;
if(off!=pr.pts)
{
load_ptb(off,bf);
bp++;
}
if(prv_fldr!=pt.par_dir_no)
{
flag=0;
continue;
}
for(g=0;tname[g]!='\0' && tname[g]==pt.dir_id[g];++g);
if((off==pr.pts && g!=pt.len_di)||(g==pt.len_di && parent==pt.par_dir_no && tname[g]!='\0'))
{
disp1.printf("\nInvalid Directory %s",tname);
return 0;
}
else if(g==pt.len_di && tname[g]=='\0')
{
file_location=pt.loc_ext;
parent=pt.par_dir_no;
prv_fldr=bp+1;
//disp1.printf("\nParent Directory of %s is %x",tname,parent);
flag=1;
break;
}
}
}
if(flag==0)
{
disp1.printf("\nCannot find the directory %s",tname);
return 0;
}
}
else if(mod[0]=='r' && mod[1]=='\0')
{
//disp1.printf("\nNonesense location %x %x",file_location,pr.lbs);
if((pr.lbs%512)==0)
count=pr.lbs/512;
else
count=(pr.lbs/512)+1;
bf2=(unsigned char*) (klm.kdmalloc (count*512));
drv->pioread(file_location*4,count,bf2);
off=0;
flag=0;
load_rdr(off,bf2);
int h;
while( rd.len_dir !=0)
{
if(rd.file_flag==0x00)
{
for(h=0;tname[h]!='\0' && tname[h]==rd.file_id[h];++h);
if(h==rd.len_file_id && tname[h]=='\0')
{
flag=1;
break;
}
}
off=off+rd.len_dir;
load_rdr(off,bf2);
}
if(flag==0)
{
disp1.printf("\nFile Not found ");
return 0;
}
else
{
/* //disp1.printf("\nFile found %s and location %x and size %x",tname,rd.loc_ext,rd.data_len);
if((rd.data_len%512)==0)
count=rd.data_len/512;
else
count=(rd.data_len/512)+1;
bf=(unsigned char*) (klm.kdmalloc (count*512));
drv->pioread(rd.loc_ext*4,count,bf);
file_begin=bf;
file_curr=bf;*/
extern file_table *ft_ptr;
extern int rid;
int cal;
cal=rid;
cal+=2;
if(cal%6==0)
cal+=2;
rid=cal;
ft_ptr->next=(file_table *) (klm.kdmalloc (sizeof(file_table)));
ft_ptr->next->fid=rid;
ft_ptr->next->fentry_lba=0;
ft_ptr->next->fentry_offset=0;
ft_ptr->next->file_start_clstr_no=rd.loc_ext*4;
ft_ptr->next->file_size=rd.data_len;
ft_ptr->next->fptr=0;
ft_ptr->next->partition=this;
ft_ptr->next->pid=0;
ft_ptr->next->next=0;
ft_ptr=ft_ptr->next;
klm.kdfree(&bf2,sizeof(count*512));
return rid;
}
}
else
{
disp1.printf("\nInvalid Mode Specified");
return 0;
}
}
}
iso9660::iso9660(drive *d)
{
unsigned char bf[2048];
int i,count;
drv = d;
drv->pioread(64,4,bf);
pr.vdt=bf[0];
pr.si[0]=bf[1];
pr.si[1]=bf[2];
pr.si[2]=bf[3];
pr.si[3]=bf[4];
pr.si[4]=bf[5];
if(pr.si[0]=='C' && pr.si[1]=='D' && pr.si[2]=='0' && pr.si[3]=='0' && pr.si[4]=='1' && pr.vdt==1)
disp1.printf("\nIso9660 file system detected\n");
else
{
disp1.printf("\nUnknown file system\n");
return;
}
//disp1.printf("\nsystem identifier ");
for(i=0;i<32;++i)
{
//disp1.printf("%c",bf[8+i]);
pr.sid[i]=bf[8+i];
}
//disp1.printf("\nvolume identifier ");
for(i=0;i<32;++i)
{
//disp1.printf("%c",bf[40+i]);
pr.vid[i]=bf[40+i];
}
//disp1.printf("\nvolume space size ");
pr.vss=return_int (bf,84,1);
//disp1.printf("%x",pr.vss);
//disp1.printf("\nvolume set size ");
pr.vsts=two_return_int (bf,122,1);
//disp1.printf("%x",pr.vsts);
//disp1.printf("\nvolume seq number ");
pr.vsn=two_return_int (bf,126,1);
//disp1.printf("%x",pr.vsn);
//disp1.printf("\nlogical block size ");
pr.lbs=two_return_int (bf,130,1);
//disp1.printf(" %x",pr.lbs);
//disp1.printf("\npath table size ");
pr.pts=return_int (bf,136,1);
//disp1.printf("%x",pr.pts);
//disp1.printf("\nlocation of l path table ");
pr.lptb=return_int (bf,140,0);
//disp1.printf("%x",pr.lptb);
//disp1.printf("\nlocation of m path table ");
pr.mptb=return_int (bf,148,1);
//disp1.printf("%x",pr.mptb);
//disp1.printf("\nroot directory record ");
for(i=0;i<34;++i)
{
//disp1.printf("%x",bf[156+i]);
pr.rdr[i]=bf[156+i];
}
load_rdr(0,pr.rdr);
//disp1.printf("\nApplication identifier ");
for(i=0;i<128;++i)
{
//disp1.printf("%c",bf[574+i]);
pr.apid[i]=bf[574+i];
}
//disp1.printf("\ndate and time of volume creation ");
for(i=0;i<16;++i)
{
//disp1.printf("%c",bf[813+i]);
pr.vdnt[i]=bf[813+i];
}
//disp1.printf("\ndate and time of volume modification ");
for(i=0;i<16;++i)
{
//disp1.printf("%c",bf[830+i]);
pr.mdnt[i]=bf[830+i];
}
//disp1.printf("\nEf fective date and time of volume ");
for(i=0;i<16;++i)
{
//disp1.printf("%c",bf[864+i]);
pr.ednt[i]=bf[864+i];
}
////////////////////////////////////////////////////////////////////////////////////////
}