| 1 | /* All directory related stuff goes here. */ |
| 2 | |
| 3 | /*! |
| 4 | *\file directory.c |
| 5 | *\brief OS/8 directory operations |
| 6 | */ |
| 7 | #include <stdio.h> |
| 8 | #include <stdlib.h> |
| 9 | |
| 10 | #include "structures.h" |
| 11 | #include "directory.h" |
| 12 | #include "ops.h" |
| 13 | #include "logging.h" |
| 14 | |
| 15 | #define SUCCESS 1 |
| 16 | #define FAILED 0 |
| 17 | |
| 18 | #define INST(TYPE) ((TYPE *)malloc(sizeof(TYPE))) |
| 19 | #define INSTN(TYPE,NUM)(TYPE *) malloc(NUM* sizeof(TYPE)) |
| 20 | |
| 21 | |
| 22 | /*! |
| 23 | * \brief Read OS/8 directory from partition image |
| 24 | */ |
| 25 | directory_t * directory_read(os8_partition_t * image){ |
| 26 | |
| 27 | /* Make instance */ |
| 28 | directory_t * result=INST(directory_t); |
| 29 | result->entries=0; |
| 30 | |
| 31 | |
| 32 | os8_direntry_t * list_head=INST(os8_direntry_t); |
| 33 | os8_direntry_t * current_entry=list_head; |
| 34 | os8_direntry_t * tmp_entry; |
| 35 | |
| 36 | os8_partition_header_t * header = &image->header; |
| 37 | os8_directory_segment_t * segs=header->directory; |
| 38 | int seg_no=0; |
| 39 | |
| 40 | list_head->prev=NULL; //Mark first element |
| 41 | |
| 42 | do{ |
| 43 | /* Data from the segment we're working on: */ |
| 44 | os8_directory_segment_t * seg=segs+seg_no; |
| 45 | int additional_info=p8_neg(seg->additional_info_neg); |
| 46 | int first_file_start=seg->first_file_start; |
| 47 | int next_segment=seg->next_segment; |
| 48 | int no_entries=p8_neg(seg->neg_entries); |
| 49 | |
| 50 | DBG ("Segment %i, Entries: %i, First Block: 0%o, additional info: 0%o, Next segment: 0%o\n",seg_no, |
| 51 | no_entries, |
| 52 | first_file_start, |
| 53 | additional_info, |
| 54 | next_segment |
| 55 | ); |
| 56 | |
| 57 | int offset=0; |
| 58 | char clear[10]; |
| 59 | result->entries+=no_entries; |
| 60 | result->additional_info=additional_info; |
| 61 | |
| 62 | /* Pointer to current entry */ |
| 63 | p8word * entry=seg->entry_data; |
| 64 | |
| 65 | int entry_no; |
| 66 | for (entry_no=0;entry_no < p8_neg(seg->neg_entries);entry_no++){ |
| 67 | |
| 68 | /* Link a new entry at the end of the list */ |
| 69 | current_entry->next=INST(os8_direntry_t); |
| 70 | tmp_entry=current_entry; |
| 71 | current_entry=current_entry->next; |
| 72 | current_entry->prev=tmp_entry; |
| 73 | current_entry->next=NULL; |
| 74 | |
| 75 | if (entry[0]){ // No empty file! |
| 76 | int size=p8_neg(entry[4+additional_info]); |
| 77 | current_entry->size_blocks=size; |
| 78 | if (size==0) current_entry->type=FT_TENTATIVE; |
| 79 | else current_entry->type=FT_PERMANENT; |
| 80 | |
| 81 | os8_file_name_extract((os8_file_name_t *) entry , current_entry->name); |
| 82 | DBG("File: %9s %i\n",current_entry->name,size); |
| 83 | entry += 5+additional_info; |
| 84 | } else { // Empty file |
| 85 | int size=p8_neg(entry[1]); |
| 86 | current_entry->size_blocks=size; |
| 87 | current_entry->type=FT_EMPTY; |
| 88 | DBG("File: <empty> %i\n",size); |
| 89 | entry += 2; |
| 90 | } |
| 91 | } |
| 92 | seg_no++; |
| 93 | } while (segs[seg_no-1].next_segment); |
| 94 | |
| 95 | result->entries=list_head->next; |
| 96 | free(list_head); |
| 97 | return result; |
| 98 | } |