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https://github.com/deater/dos33fsprogs.git
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prodos: add DELETE support
seems to work
This commit is contained in:
Vince Weaver
parent
c84a801d49
commit
b2e684247b
@ -44,6 +44,8 @@ static int prodos_lookup_file(struct voldir_t *voldir,
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voldir_buffer+4+file*PRODOS_FILE_DESC_LEN,
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&file_entry);
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if (file_entry.storage_type==PRODOS_FILE_DELETED) continue;
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/* FIXME: case insensitive? */
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if (!strncmp(filename,(char *)file_entry.file_name,15)) {
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return (voldir_block<<8)|file;
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@ -701,93 +703,157 @@ static int prodos_rename_file(struct voldir_t *voldir,
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static int prodos_delete_file(struct voldir_t *voldir,char *apple_filename) {
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#if 0
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int i;
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int catalog_track,catalog_sector,catalog_entry;
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int ts_track,ts_sector;
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char file_type;
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int result;
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unsigned char catalog_buffer[PRODOS_BYTES_PER_BLOCK];
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/* unpack file/track/sector info */
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catalog_entry=fsl>>16;
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catalog_track=(fsl>>8)&0xff;
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catalog_sector=(fsl&0xff);
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unsigned char data_buffer[PRODOS_BYTES_PER_BLOCK];
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unsigned char index_block[PRODOS_BYTES_PER_BLOCK];
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unsigned char master_index_block[PRODOS_BYTES_PER_BLOCK];
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int result,chunk,chunk_block,index,blocks_left,read_blocks,mblock;
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struct file_entry_t file;
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int inode;
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/* Load in the catalog table for the file */
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lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
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result=read(fd,catalog_buffer,PRODOS_BYTES_PER_BLOCK);
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/* get the voldir/entry for file */
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inode=prodos_lookup_file(voldir,apple_filename);
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file_type=catalog_buffer[CATALOG_FILE_LIST+
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(catalog_entry*CATALOG_ENTRY_SIZE)
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+FILE_TYPE];
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if (file_type&0x80) {
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fprintf(stderr,"File is locked! Unlock before deleting!\n");
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exit(1);
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if (inode<0) {
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fprintf(stderr,"Error! %s not found!\n",
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apple_filename);
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return -1;
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}
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/* get pointer to t/s list */
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ts_track=catalog_buffer[CATALOG_FILE_LIST+
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catalog_entry*CATALOG_ENTRY_SIZE+FILE_TS_LIST_T];
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ts_sector=catalog_buffer[CATALOG_FILE_LIST+
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catalog_entry*CATALOG_ENTRY_SIZE+FILE_TS_LIST_S];
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result=prodos_read_block(voldir,data_buffer,inode>>8);
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keep_deleting:
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/* load in the t/s list info */
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lseek(fd,DISK_OFFSET(ts_track,ts_sector),SEEK_SET);
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result=read(fd,catalog_buffer,PRODOS_BYTES_PER_BLOCK);
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/* Free each sector listed by t/s list */
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for(i=0;i<TSL_MAX_NUMBER;i++) {
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/* If t/s = 0/0 then no need to clear */
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if ((catalog_buffer[TSL_LIST+2*i]==0) &&
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(catalog_buffer[TSL_LIST+2*i+1]==0)) {
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}
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else {
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prodos_free_sector(voldir,fd,catalog_buffer[TSL_LIST+2*i],
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catalog_buffer[TSL_LIST+2*i+1]);
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}
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if (prodos_get_file_entry(voldir,inode,&file)<0) {
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fprintf(stderr,"Error opening inode %x\n",inode);
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return -1;
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}
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/* free the t/s list */
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prodos_free_sector(voldir,fd,ts_track,ts_sector);
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/******************************/
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/* delete all the file blocks */
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/******************************/
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/* Point to next t/s list */
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ts_track=catalog_buffer[TSL_NEXT_TRACK];
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ts_sector=catalog_buffer[TSL_NEXT_SECTOR];
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switch(file.storage_type) {
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case PRODOS_FILE_SEEDLING:
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/* Just a single block */
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if (debug) fprintf(stderr,"Deleting block $%x\n",
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file.key_pointer);
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/* If more tsl lists, keep looping */
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if ((ts_track==0x0) && (ts_sector==0x0)) {
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}
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else {
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goto keep_deleting;
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result=prodos_free_block(voldir,file.key_pointer);
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if (result<0) {
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return result;
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}
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break;
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case PRODOS_FILE_SAPLING:
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/* Index block points to up to 256 blocks */
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/* Addresses are stored low-byte (256 bytes) then hi-byte */
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/* Address of zero means file hole, all zeros */
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if (debug) fprintf(stderr,"Freeing index "
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"block $%x\n",
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file.key_pointer);
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result=prodos_read_block(voldir,index_block,
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file.key_pointer);
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if (result<0) {
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return result;
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}
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for(chunk=0;chunk<file.blocks_used;chunk++) {
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chunk_block=(index_block[chunk])|(index_block[chunk+256]<<8);
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if (chunk_block==0) {
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/* FILE hole */
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}
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else {
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result=prodos_free_block(voldir,chunk_block);
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if (result<0) {
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return result;
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}
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}
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}
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result=prodos_free_block(voldir,file.key_pointer);
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break;
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case PRODOS_FILE_TREE:
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/* Master Index block points to up to 256 index blocks */
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/* Addresses are stored low-byte (256 bytes) then hi-byte */
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/* Index block points to up to 256 blocks */
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/* Addresses are stored low-byte (256 bytes) then hi-byte */
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/* Address of zero means file hole, all zeros */
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blocks_left=file.blocks_used;
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if (debug) fprintf(stderr,"Deleting master index "
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"block $%x\n",
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file.key_pointer);
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result=prodos_read_block(voldir,master_index_block,
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file.key_pointer);
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if (result<0) {
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return result;
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}
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for(index=0;index<file.blocks_used/256;index++) {
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mblock=(master_index_block[index])|
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(master_index_block[256+index]<<8);
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result=prodos_read_block(voldir,
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index_block,
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mblock);
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if (result<0) {
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return result;
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}
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if (blocks_left<256) {
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read_blocks=blocks_left;
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}
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else {
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read_blocks=256;
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}
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for(chunk=0;chunk<read_blocks;chunk++) {
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chunk_block=(index_block[chunk])|
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(index_block[chunk+256]<<8);
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result=prodos_free_block(voldir,chunk_block);
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if (result<0) {
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return result;
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}
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}
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result=prodos_free_block(voldir,mblock);
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}
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result=prodos_free_block(voldir,file.key_pointer);
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break;
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case PRODOS_FILE_SUBDIR:
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case PRODOS_FILE_DELETED:
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case PRODOS_FILE_SUBDIR_HDR:
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case PRODOS_FILE_VOLUME_HDR:
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default:
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fprintf(stderr,"Error! "
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"Cannot delete this type of file: %x\n",
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file.storage_type);
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break;
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}
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/* Erase file from catalog entry */
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/* First reload proper catalog sector */
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lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
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result=read(fd,catalog_buffer,PRODOS_BYTES_PER_BLOCK);
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/* now that file is gone, disconnect the directory image */
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/* save track as last char of name, for undelete purposes */
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catalog_buffer[CATALOG_FILE_LIST+(catalog_entry*CATALOG_ENTRY_SIZE)+
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(FILE_NAME+FILE_NAME_SIZE-1)]=
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catalog_buffer[CATALOG_FILE_LIST+(catalog_entry*CATALOG_ENTRY_SIZE)];
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/* should we clear it out? */
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/* makes undelete harder */
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// memset(&file,0,sizeof(struct file_entry_t));
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/* Actually delete the file */
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/* by setting the track value to FF which indicates deleted file */
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catalog_buffer[CATALOG_FILE_LIST+(catalog_entry*CATALOG_ENTRY_SIZE)]=0xff;
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file.storage_type=PRODOS_FILE_DELETED;
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/* re seek to catalog position and write out changes */
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lseek(fd,DISK_OFFSET(catalog_track,catalog_sector),SEEK_SET);
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result=write(fd,catalog_buffer,PRODOS_BYTES_PER_BLOCK);
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/* copy in new data */
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prodos_writeout_filedesc(voldir,&file,
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data_buffer+4+(inode&0xff)*PRODOS_FILE_DESC_LEN);
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/* write back existing voldir entry */
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result=prodos_write_block(voldir,data_buffer,inode>>8);
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/* update file count */
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if (debug) printf("Updating file count...\n");
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voldir->file_count--;
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prodos_sync_voldir(voldir);
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if (result<0) fprintf(stderr,"Error on I/O\n");
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#endif
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return 0;
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}
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