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Added support for GSOS two-fork files

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Bobbi Webber-Manners 2020-02-09 01:10:03 -05:00
parent c2f198e843
commit 05d0ebdf84
1 changed files with 107 additions and 17 deletions
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106
bobbi/sortdir.c#b00008
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@ -1,16 +1,16 @@
/*
* Bobbi January-February 2020
*
* TODO: Use segment to make more memory available
* TODO: Handle storage type $5 - files with resource fork
* TODO: Check no disk blocks are used more than once
* TODO: Fix bug where some file blocks reported as free
* TODO: Recursive / whole volume mode - check all unused blocks are free
* TODO: Check no disk blocks are used more than once
* TODO: Fix mode
* TODO: Tool for 'extending' volume dir to more than 4 blocks
* TODO: Tool for lower/upper/camel casing filenames
* TODO: Legacy/extended date format conversion
* TODO: Trimming unused directory blocks
* TODO: Improve output and user interface
* TODO: Use segment to make more memory available
*/
#pragma debug 25 /* Enable stack checking */
@ -115,9 +115,10 @@ static uchar entsz; /* Bytes per file entry */
static uchar entperblk; /* Number of entries per block */
static char buf[BLKSZ]; /* General purpose scratch buffer */
static char buf2[BLKSZ]; /* General purpose scratch buffer */
static char buf3[BLKSZ]; /* General purpose scratch buffer */
static uchar dowrite = 0;
static uchar doverbose = 0;
static char sortopts[5] = "n";
static char sortopts[5] = "";
/* Prototypes */
void prerr(char *s);
@ -128,6 +129,7 @@ int readfreelist(uchar device);
int isfree(uint blk);
int saplingblocks(uchar device, uint keyblk, uint *blkcnt);
int treeblocks(uchar device, uint keyblk, uint *blkcnt);
int forkblocks(uchar device, uint keyblk, uint *blkcnt);
int subdirblocks(uchar device, uint keyblk, struct pd_dirent *ent,
uint blocknum, uint blkentries, uint *blkcnt);
int readdir(uint device, uint blocknum);
@ -306,8 +308,8 @@ int readfreelist(uchar device) {
puts("Error reading volume dir");
return -1;
}
uint flblk = (uint)buf[0x27] + 256U * (uint)buf[0x28];
uint totblks = (uint)buf[0x29] + 256U * (uint)buf[0x2a];
uint flblk = buf[0x27] + 256U * buf[0x28];
uint totblks = buf[0x29] + 256U * buf[0x2a];
printf("Volume has %u blocks\n", totblks);
uint flsize = totblks / 4096U;
if ((flsize % 4096) >0)
@ -350,7 +352,7 @@ int saplingblocks(uchar device, uint keyblk, uint *blkcnt) {
}
*blkcnt = 1;
for (uint i=0; i<256; ++i) {
uint p = (uchar)buf[i] + 256U * (uchar)buf[i+256];
uint p = buf[i] + 256U * buf[i+256];
if (p) {
if (isfree(p))
printf(" Data block %u is marked free!\n", p);
@ -370,7 +372,7 @@ int treeblocks(uchar device, uint keyblk, uint *blkcnt) {
}
*blkcnt = 1;
for (uint i=0; i<256; ++i) {
uint p = (uchar)buf2[i] + 256U * (uchar)buf2[i+256];
uint p = buf2[i] + 256U * buf2[i+256];
if (p) {
if (isfree(p))
printf(" Idx block %u is marked free!\n", p);
@ -384,6 +386,85 @@ int treeblocks(uchar device, uint keyblk, uint *blkcnt) {
return 0;
}
/*
* Count the blocks in a GSOS fork file
* See http://1000bit.it/support/manual/apple/technotes/pdos/tn.pdos.25.html
*/
int forkblocks(uchar device, uint keyblk, uint *blkcnt) {
if (readdiskblock(device, keyblk, buf3) == -1) {
printf(" Error reading blk %u\n", keyblk);
return -1;
}
*blkcnt = 1;
uint count;
/* Data fork */
uchar type = buf3[0x00];
keyblk = buf3[0x01] + 256U * buf3[0x02];
uint blks = buf3[0x03] + 256U * buf3[0x04];
if (isfree(keyblk))
printf(" Data fork keyblock %u is marked free!\n", keyblk);
switch (type) {
case 0x1:
/* Seedling */
count = 1;
break;
case 0x2:
/* Sapling */
saplingblocks(device, keyblk, &count);
break;
case 0x3:
/* Tree */
treeblocks(device, keyblk, &count);
break;
default:
puts(" Invalid storage type for data fork");
count = 0;
break;
}
if (blks != count) {
if (count != 0) {
printf(" Data fork size %u is incorrect", blks);
printf(", should be %u\n", count);
}
}
*blkcnt += count;
/* Data fork */
type = buf3[0x100];
keyblk = buf3[0x101] + 256U * buf3[0x102];
blks = buf3[0x103] + 256U * buf3[0x104];
if (isfree(keyblk))
printf(" Resource fork keyblock %u is marked free!\n", keyblk);
switch (type) {
case 0x1:
/* Seedling */
count = 1;
break;
case 0x2:
/* Sapling */
saplingblocks(device, keyblk, &count);
break;
case 0x3:
/* Tree */
treeblocks(device, keyblk, &count);
break;
default:
puts(" Invalid storage type for resource fork");
count = 0;
break;
}
if (blks != count) {
if (count != 0) {
printf(" Resource fork size %u is incorrect", blks);
printf(", should be %u\n", count);
}
}
*blkcnt += count;
return 0;
}
/*
* Count the blocks in a subdirectory
*/
@ -554,8 +635,15 @@ int readdir(uint device, uint blocknum) {
case 0x40:
/* Pascal area */
puts(" Pascal area!!");
//
// TODO: Check name is PASCAL.AREA type 0xef
//
count = 0;
break;
case 0x50:
/* File with resource fork */
forkblocks(device, keyblk, &count);
break;
default:
printf(" %s: unexpected storage type 0x%x\n",
namebuf, ent->typ_len & 0xf0);
@ -877,6 +965,7 @@ int main(int argc, char *argv[]) {
if (!err) {
if (doverbose)
printlist();
if (strlen(sortopts) > 0) {
for (uchar i=0; i<strlen(sortopts); ++i)
sortlist(sortopts[i]);
sortblocks(dev);
@ -888,6 +977,7 @@ int main(int argc, char *argv[]) {
if (doverbose)
puts("Not writing to disk");
}
}
freeblocks();
return err;
}