mirror of
https://github.com/deater/dos33fsprogs.git
synced 2025-02-27 00:29:35 +00:00
dos33: more whitespace cleanups
This commit is contained in:
Vince Weaver
parent
1e90deb41c
commit
6c4b06ae1a
@ -321,111 +321,106 @@ static int find_first_one(unsigned char byte) {
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static int dos33_free_sector(int fd,int track,int sector) {
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unsigned char vtoc[BYTES_PER_SECTOR];
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int result;
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/* Seek to VTOC */
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lseek(fd,DISK_OFFSET(VTOC_TRACK,VTOC_SECTOR),SEEK_SET);
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/* read in VTOC */
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result=read(fd,&vtoc,BYTES_PER_SECTOR);
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/* each bitmap is 32 bits. With 16-sector tracks only first 16 used */
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/* 1 indicates free, 0 indicates used */
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if (sector<8) {
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vtoc[VTOC_FREE_BITMAPS+(track*4)+1]|=(0x1<<sector);
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}
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else {
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vtoc[VTOC_FREE_BITMAPS+(track*4)]|=(0x1<<(sector-8));
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}
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/* write modified VTOC back out */
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lseek(fd,DISK_OFFSET(VTOC_TRACK,VTOC_SECTOR),SEEK_SET);
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result=write(fd,&vtoc,BYTES_PER_SECTOR);
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unsigned char vtoc[BYTES_PER_SECTOR];
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int result;
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if (result<0) fprintf(stderr,"Error on I/O\n");
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return 0;
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/* Seek to VTOC */
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lseek(fd,DISK_OFFSET(VTOC_TRACK,VTOC_SECTOR),SEEK_SET);
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/* read in VTOC */
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result=read(fd,&vtoc,BYTES_PER_SECTOR);
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/* each bitmap is 32 bits. With 16-sector tracks only first 16 used */
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/* 1 indicates free, 0 indicates used */
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if (sector<8) {
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vtoc[VTOC_FREE_BITMAPS+(track*4)+1]|=(0x1<<sector);
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}
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else {
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vtoc[VTOC_FREE_BITMAPS+(track*4)]|=(0x1<<(sector-8));
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}
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/* write modified VTOC back out */
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lseek(fd,DISK_OFFSET(VTOC_TRACK,VTOC_SECTOR),SEEK_SET);
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result=write(fd,&vtoc,BYTES_PER_SECTOR);
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if (result<0) fprintf(stderr,"Error on I/O\n");
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return 0;
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}
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static int dos33_allocate_sector(int fd) {
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int found_track=0,found_sector=0;
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unsigned char bitmap[4];
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int i,start_track,track_dir,byte;
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int result;
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dos33_read_vtoc(fd);
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/* Originally used to keep things near center of disk for speed */
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/* We can use to avoid fragmentation possibly */
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start_track=sector_buffer[VTOC_LAST_ALLOC_T]%TRACKS_PER_DISK;
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track_dir=sector_buffer[VTOC_ALLOC_DIRECT];
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if (track_dir==255) track_dir=-1;
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if ((track_dir!=1) && (track_dir!=-1)) {
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fprintf(stderr,"ERROR! Invalid track dir %i\n",track_dir);
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}
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if (((start_track>VTOC_TRACK) && (track_dir!=1)) ||
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((start_track<VTOC_TRACK) && (track_dir!=-1))) {
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fprintf(stderr,"Warning! Non-optimal values for track dir t=%i d=%i!\n",
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start_track,track_dir);
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}
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i=start_track;
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do {
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for(byte=1;byte>-1;byte--) {
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bitmap[byte]=sector_buffer[VTOC_FREE_BITMAPS+(i*4)+byte];
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if (bitmap[byte]!=0x00) {
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found_sector=find_first_one(bitmap[byte]);
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found_track=i;
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/* clear bit indicating in use */
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sector_buffer[VTOC_FREE_BITMAPS+(i*4)+byte]&=~(0x1<<found_sector);
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found_sector+=(8*(1-byte));
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goto found_one;
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}
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}
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/* Move to next track, handling overflows */
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i+=track_dir;
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if (i<0) {
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i=VTOC_TRACK;
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track_dir=1;
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}
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if (i>=TRACKS_PER_DISK) {
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i=VTOC_TRACK;
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track_dir=-1;
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}
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} while (i!=start_track);
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fprintf(stderr,"No room left!\n");
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return -1;
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int found_track=0,found_sector=0;
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unsigned char bitmap[4];
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int i,start_track,track_dir,byte;
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int result;
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dos33_read_vtoc(fd);
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/* Originally used to keep things near center of disk for speed */
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/* We can use to avoid fragmentation possibly */
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start_track=sector_buffer[VTOC_LAST_ALLOC_T]%TRACKS_PER_DISK;
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track_dir=sector_buffer[VTOC_ALLOC_DIRECT];
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if (track_dir==255) track_dir=-1;
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if ((track_dir!=1) && (track_dir!=-1)) {
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fprintf(stderr,"ERROR! Invalid track dir %i\n",track_dir);
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}
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if (((start_track>VTOC_TRACK) && (track_dir!=1)) ||
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((start_track<VTOC_TRACK) && (track_dir!=-1))) {
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fprintf(stderr,"Warning! Non-optimal values for track dir t=%i d=%i!\n",
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start_track,track_dir);
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}
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i=start_track;
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do {
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for(byte=1;byte>-1;byte--) {
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bitmap[byte]=sector_buffer[VTOC_FREE_BITMAPS+(i*4)+byte];
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if (bitmap[byte]!=0x00) {
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found_sector=find_first_one(bitmap[byte]);
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found_track=i;
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/* clear bit indicating in use */
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sector_buffer[VTOC_FREE_BITMAPS+(i*4)+byte]&=~(0x1<<found_sector);
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found_sector+=(8*(1-byte));
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goto found_one;
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}
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}
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/* Move to next track, handling overflows */
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i+=track_dir;
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if (i<0) {
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i=VTOC_TRACK;
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track_dir=1;
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}
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if (i>=TRACKS_PER_DISK) {
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i=VTOC_TRACK;
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track_dir=-1;
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}
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} while (i!=start_track);
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fprintf(stderr,"No room left!\n");
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return -1;
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found_one:
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/* store new track/direction info */
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sector_buffer[VTOC_LAST_ALLOC_T]=found_track;
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if (found_track>VTOC_TRACK) sector_buffer[VTOC_ALLOC_DIRECT]=1;
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else sector_buffer[VTOC_ALLOC_DIRECT]=-1;
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/* Seek to VTOC */
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lseek(fd,DISK_OFFSET(VTOC_TRACK,VTOC_SECTOR),SEEK_SET);
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/* Write out VTOC */
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result=write(fd,§or_buffer,BYTES_PER_SECTOR);
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/* store new track/direction info */
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sector_buffer[VTOC_LAST_ALLOC_T]=found_track;
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if (result<0) fprintf(stderr,"Error on I/O\n");
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if (found_track>VTOC_TRACK) sector_buffer[VTOC_ALLOC_DIRECT]=1;
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else sector_buffer[VTOC_ALLOC_DIRECT]=-1;
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return ((found_track<<8)+found_sector);
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/* Seek to VTOC */
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lseek(fd,DISK_OFFSET(VTOC_TRACK,VTOC_SECTOR),SEEK_SET);
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/* Write out VTOC */
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result=write(fd,§or_buffer,BYTES_PER_SECTOR);
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if (result<0) fprintf(stderr,"Error on I/O\n");
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return ((found_track<<8)+found_sector);
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}
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#define ERROR_INVALID_FILENAME 1
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@ -1538,35 +1533,35 @@ int main(int argc, char **argv) {
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break;
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case COMMAND_UNDELETE:
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/* check and make sure we have apple_filename */
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if (argc<4) {
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fprintf(stderr,"Error! Need apple file_name\n");
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fprintf(stderr,"%s %s LOCK apple_filename\n",argv[0],image);
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goto exit_and_close;
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}
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/* Truncate filename if too long */
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/* what to do about last char ? */
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if (strlen(argv[firstarg+2])>30) {
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fprintf(stderr,
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"Warning! Truncating %s to 30 chars\n",argv[firstarg+2]);
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}
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strncpy(apple_filename,argv[firstarg+2],30);
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apple_filename[30]='\0';
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/* get the entry/track/sector for file */
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catalog_entry=dos33_check_file_exists(dos_fd,
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apple_filename,
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FILE_DELETED);
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if (catalog_entry<0) {
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fprintf(stderr,"Error! %s not found!\n",apple_filename);
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goto exit_and_close;
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}
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case COMMAND_UNDELETE:
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/* check and make sure we have apple_filename */
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if (argc<4) {
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fprintf(stderr,"Error! Need apple file_name\n");
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fprintf(stderr,"%s %s LOCK apple_filename\n",argv[0],image);
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goto exit_and_close;
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}
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dos33_undelete_file(dos_fd,catalog_entry,apple_filename);
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break;
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/* Truncate filename if too long */
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/* what to do about last char ? */
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if (strlen(argv[firstarg+2])>30) {
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fprintf(stderr,
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"Warning! Truncating %s to 30 chars\n",argv[firstarg+2]);
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}
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strncpy(apple_filename,argv[firstarg+2],30);
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apple_filename[30]='\0';
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/* get the entry/track/sector for file */
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catalog_entry=dos33_check_file_exists(dos_fd,
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apple_filename,
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FILE_DELETED);
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if (catalog_entry<0) {
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fprintf(stderr,"Error! %s not found!\n",apple_filename);
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goto exit_and_close;
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}
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dos33_undelete_file(dos_fd,catalog_entry,apple_filename);
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break;
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case COMMAND_HELLO:
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if (argc+extra_ops<4) {
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fprintf(stderr,"Error! Need file_name\n");
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