OS_Develop/FreeDOS
OS_Develop/FreeDOS
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34 Commits

Author SHA1 Message Date
Eric Auer
26f116a217 More secure FAT handling: Avoids risk of cross links for example if 
you reboot while files are open... Reported by Hardi Stengelin :-).

Always test *link_fat* result. New function is_free_cluster.  Extra
checks in *link_fat* (bad r/w offset, i/o, write) and *next_cluster*
(dangling chain: bad value in chain) with short messages (no msg for
bad chain start). Shorter "Bad DPB" (FAT size) msg.  More comments!

Update FS INFO on disk only when needed.  Check if chain EOF was at
expected place when extending.  Call *link_fat* before! *setdstart*
when a FAT chain grows.   [Q: Does 0 byte write always trunc? Why?]


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@1358 6ac86273-5f31-0410-b378-82cca8765d1b
 2008-03-08 20:31:37 +00:00
Eric Auer
cf05259924 Removed "Dutch plurals" ("Dutch plural's" ;-)) from the source code: 
kernel/fatfs.c kernel/config.c kernel/kernel.asm kernel/initdisk.c
kernel/fattab.c kernel/dyninit.c kernel/int2f.asm kernel/memmgr.c
kernel/task.c kernel/dsk.c kernel/printer.asm kernel/globals.h
kernel/dosfns.c docs/config.txt hdr/device.h drivers/rdpcclk.asm


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@1338 6ac86273-5f31-0410-b378-82cca8765d1b
 2007-07-20 20:52:33 +00:00
Bart Oldeman
c952ceff61 Clear high 4 bits of FAT32 FAT table entries & diagnostics. From FD 1.0 
kernel.


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@1303 6ac86273-5f31-0410-b378-82cca8765d1b
 2006-10-31 21:05:09 +00:00
Bart Oldeman
99d287bd2c fattab.c now remembers if the old FAT entry was free or not, so the free 
space adjustment could be moved back to fattab.c.


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@921 6ac86273-5f31-0410-b378-82cca8765d1b
 2004-05-04 09:43:06 +00:00
Bart Oldeman
9cbede2ec9 Stop abusing "idx". The OW optimizer likes this better, too. 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@909 6ac86273-5f31-0410-b378-82cca8765d1b
 2004-04-30 16:49:34 +00:00
Bart Oldeman
00e1527fc5 Clean up FAT12 handling -- there's a portable approach that's small too. 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@908 6ac86273-5f31-0410-b378-82cca8765d1b
 2004-04-30 15:28:18 +00:00
Bart Oldeman
126ef5cec9 Inlined much of getFATblock() into link_fat. Saves the idx reference. 
The second call (for a FAT12 entry that is divided in two sectors)
can be much simpler, no need to recalculate.


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@907 6ac86273-5f31-0410-b378-82cca8765d1b
 2004-04-30 14:05:14 +00:00
Bart Oldeman
bfe9252c2b Merged next_cluster and link_fat into one function depending on a 
special Cluster2 value. More optimizations later.


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@906 6ac86273-5f31-0410-b378-82cca8765d1b
 2004-04-30 13:07:26 +00:00
Bart Oldeman
115b2bf68d Calculate the nibble/word/dword index of the FAT entry in the sector 
centrally in getFATblock.


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@905 6ac86273-5f31-0410-b378-82cca8765d1b
 2004-04-29 12:48:18 +00:00
Bart Oldeman
f6716cd74b "clussec" can be of CLUSTER size if we divide by an adjusted "words per 
sector"(FAT16), or "dwords per sector"(FAT32) value instead of multiplying
it first. For FAT12 the *3/2 works out a little differently: here we
first multiply by 3 and then divide by the number of "nibbles per sector".


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@904 6ac86273-5f31-0410-b378-82cca8765d1b
 2004-04-29 12:28:14 +00:00
Bart Oldeman
bb7f10fafc Reverted bad optimization -- (unsigned)Cluster2 may have the high 4 bits set 
with LONG_LAST_CLUSTER.


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@902 6ac86273-5f31-0410-b378-82cca8765d1b
 2004-04-26 21:23:26 +00:00
Bart Oldeman
6f7b41e257 Fixed silly mistake in cluster index calculation. 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@899 6ac86273-5f31-0410-b378-82cca8765d1b
 2004-04-24 16:02:39 +00:00
Bart Oldeman
490a27b857 Some of Arkady's fattab optimizations -- the others only increase the kernel 
size for Watcom.


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@898 6ac86273-5f31-0410-b378-82cca8765d1b
 2004-04-24 15:53:21 +00:00
Bart Oldeman
0e0abcd685 Added explicit (UWORD) type casts to avoid compiler warnings and sometimes 
save a few bytes too. Also changed the FcbParseFname return value:
returns offset portion of pointer (SI) instead of the number of bytes to
be added to SI.


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@775 6ac86273-5f31-0410-b378-82cca8765d1b
 2004-02-07 18:04:50 +00:00
Bart Oldeman
272f86af3d Corrections to get past turbo c warnings. 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@764 6ac86273-5f31-0410-b378-82cca8765d1b
 2004-01-31 15:04:09 +00:00
Bart Oldeman
4f1a117069 * FAT32 kernels should ignore the upper word of the cluster number for 
FAT16 partitions (just like FAT16 kernels do)
* added extra checks to make sure that invalid FAT entries are never
  followed
* made put_console() public to be able to print a message in case of
  FAT corruption
* some small optimizations and header cleanups (some suggested by Arkady)


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@753 6ac86273-5f31-0410-b378-82cca8765d1b
 2004-01-26 00:51:49 +00:00
Bart Oldeman
b43f271014 "rmdir" and FAT32 fixes from Tom. 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@499 6ac86273-5f31-0410-b378-82cca8765d1b
 2003-02-20 20:51:42 +00:00
Bart Oldeman
e67a8f5058 Changes for kernel 2028 (see history.txt) 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@485 6ac86273-5f31-0410-b378-82cca8765d1b
 2002-12-09 00:17:15 +00:00
Bart Oldeman
511bf63d16 Cleaned up task.c (merged much of DOSExe/ComLoader); transform the CDS into 
a proper array.


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@413 6ac86273-5f31-0410-b378-82cca8765d1b
 2002-08-03 16:54:09 +00:00
Bart Oldeman
8290c26aa3 Inlined functions, fixed non-native bug and reduced buffer structure. 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@406 6ac86273-5f31-0410-b378-82cca8765d1b
 2002-08-03 02:25:17 +00:00
Bart Oldeman
2098578b1b kernel 2026b changes 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@382 6ac86273-5f31-0410-b378-82cca8765d1b
 2002-05-08 22:49:35 +00:00
Bart Oldeman
0e8b739c4c kernel 2026 test changes (see history.txt) 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@343 6ac86273-5f31-0410-b378-82cca8765d1b
 2002-01-23 22:29:41 +00:00
Bart Oldeman
b6d423a1b3 Ran all .c and .h files through "indent" 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@329 6ac86273-5f31-0410-b378-82cca8765d1b
 2001-11-18 14:01:12 +00:00
Bart Oldeman
fe51b7a036 Truncated and disabled $Logs, fixed r/w bugs for kernel 2025b 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@326 6ac86273-5f31-0410-b378-82cca8765d1b
 2001-11-17 23:26:45 +00:00
Bart Oldeman
5a18de7cbb Kernel 2025a final changes. 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@321 6ac86273-5f31-0410-b378-82cca8765d1b
 2001-11-13 23:36:45 +00:00
Bart Oldeman
9e007d884e kernel 2025a changes: see history.txt 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@314 6ac86273-5f31-0410-b378-82cca8765d1b
 2001-11-04 19:47:39 +00:00
Bart Oldeman
048c87bbac FAT32 support, misc fixes, INT2F/AH=12 support, drive B: handling 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@305 6ac86273-5f31-0410-b378-82cca8765d1b
 2001-09-23 20:39:44 +00:00
Bart Oldeman
c1b1896480 LBA/FCB/FAT/SYS/Ctrl-C/ioctl fixes + memory savings 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@260 6ac86273-5f31-0410-b378-82cca8765d1b
 2001-07-09 22:19:33 +00:00
Bart Oldeman
68375764dd BUFFERS tuning and misc bug fixes/cleanups (2024c). 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@232 6ac86273-5f31-0410-b378-82cca8765d1b
 2001-06-03 14:16:18 +00:00
Bart Oldeman
cb13571dab Init DS=Init CS, fixed stack overflow problems and misc bugs. 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@204 6ac86273-5f31-0410-b378-82cca8765d1b
 2001-04-21 22:32:53 +00:00
Bart Oldeman
be2ae12b54 See history.txt for the list of fixes. 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@196 6ac86273-5f31-0410-b378-82cca8765d1b
 2001-04-15 03:21:50 +00:00
Jim Tabor
21bb3f6923 Fixed project history 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@26 6ac86273-5f31-0410-b378-82cca8765d1b
 2000-05-25 20:56:23 +00:00
Jim Tabor
b857858f48 Update CVS to 2020 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@7 6ac86273-5f31-0410-b378-82cca8765d1b
 2000-05-08 04:30:00 +00:00
Jim Hall
060002c5ae Initial revision 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@2 6ac86273-5f31-0410-b378-82cca8765d1b
 2000-05-06 19:34:20 +00:00