1 (Note: I consider version numbers as cheap. That means
2 that I do not like numbers like 0.1 and the like for
3 things that can be used since quite some time. But
4 then, 3.1 doesn't mean 'perfectly stable', too.)
5
6 Known bugs:
7 -----------
8
9 - Doesn't work on the alpha. The only 64/32-bit
10 problem that I'm aware of (pointer/int conversion
11 in readdir()) gives compiler warnings but is
12 apparently not causing the failure, as directory
13 reads basically work (but all files are of size 0).
14 Alas, I've got no alpha to debug. :-(
15
16 - The partition checker (drivers/block/genhd.c)
17 doesn't work with devices which have 256 byte
18 blocks (some very old SCSI drives).
19
20 - The feature to automatically make the fs clean
21 might leave a trashed file system with the
22 bitmap flag set valid.
23
24 - When a file is truncated to a size that is not
25 a multiple of the blocksize, the rest of the
26 last allocated block is not cleared. Well,
27 this fs never claimed to be Posix conformant.
28
29 Please direct bug reports to: zippel@linux-m68k.org
30
31 Version 3.20
32 ------------
33 - kill kernel lock
34 - fix for a possible bitmap corruption
35
36 Version 3.19
37 ------------
38
39 - sizeof changes from Kernel Janitor Project
40 - several bug fixes found with fsx
41
42 Version 3.18
43 ------------
44
45 - change to global min macro + warning fixes
46 - add module tags
47
48 Version 3.17
49 ------------
50
51 - locking fixes
52 - wrong sign in __affs_hash_dentry
53 - remove unnecessary check in affs_new_inode
54 - enable international mode for dircache fs
55
56 Version 3.16
57 ------------
58
59 - use mark_buffer_dirty_inode instead of mark_buffer_dirty.
60 - introduce affs_lock_{link|dir|ext}.
61
62 Version 3.15
63 ------------
64
65 - disable link to directories until we can properly support them.
66 - locking fixes for link creation/removal.
67
68 Version 3.14
69 ------------
70
71 - correctly cut off long file names for compares
72 - correctly initialize s_last_bmap
73
74 Version 3.13
75 ------------
76
77 Major cleanup for 2.4 [Roman Zippel]
78 - new extended block handling
79 - new bitmap allocation functions
80 - locking should be safe for the future
81 - cleanup of some interfaces
82
83 Version 3.12
84 ------------
85
86 more 2.4 fixes: [Roman Zippel]
87 - s_lock changes
88 - increased getblock mess
89 - clear meta blocks
90
91 Version 3.11
92 ------------
93
94 - Converted to use 2.3.x page cache [Dave Jones]
95 - Corruption in truncate() bugfix [Ken Tyler <kent@werple.net.au>]
96
97 Version 3.10
98 ------------
99
100 - Changed partition checker to allow devices
101 with physical blocks != 512 bytes.
102
103 - The partition checker now also ignores the
104 word at 0xd0 that Windows likes to write to.
105
106 Version 3.9
107 -----------
108
109 - Moved cleanup from release_file() to put_inode().
110 This makes the first one obsolete.
111
112 - truncate() zeroes the unused remainder of a
113 partially used last block when a file is truncated.
114 It also marks the inode dirty now (which is not
115 really necessary as notify_change() will do
116 it anyway).
117
118 - Added a few comments, fixed some typos (and
119 introduced some new ones), made the debug messages
120 more consistent. Changed a bad example in the
121 doc file (affs.txt).
122
123 - Sets the NOEXEC flag in read_super() for old file
124 systems, since you can't run programs on them.
125
126 Version 3.8
127 -----------
128 Bill Hawes kindly reviewed the affs and sent me the
129 patches he did. They're marked (BH). Thanks, Bill!
130
131 - Cleanup of error handling in read_super().
132 Didn't release all resources in case of an
133 error. (BH)
134
135 - put_inode() releases the ext cache only if it's
136 no longer needed. (BH)
137
138 - One set of dentry callbacks is enough. (BH)
139
140 - Cleanup of error handling in namei.c. (BH)
141
142 - Cleanup of error handling in file.c. (BH)
143
144 - The original blocksize of the device is
145 restored when the fs is unmounted. (BH)
146
147 - getblock() did not invalidate the key cache
148 when it allocated a new block.
149
150 - Removed some unnecessary locks as Bill
151 suggested.
152
153 - Simplified match_name(), changed all hashing
154 and case insensitive name comparisons to use
155 uppercase. This makes the tolower() routines
156 obsolete.
157
158 - Added mount option 'mufs' to force muFS
159 uid/gid interpretation.
160
161 - File mode changes were not updated on disk.
162 This was fixed before, but somehow got lost.
163
164 Version 3.7
165 -----------
166
167 - Added dentry callbacks to allow the dcache to
168 operate case insensitive and length ignorant
169 like the affs itself.
170
171 - getblock() didn't update the lastblock field in the
172 inode if the fs was not an OFS. This bug only shows
173 up if a file was enlarged via truncate() and there
174 was not enough space.
175
176 - Remove some more superfluous code left over from
177 the old link days ...
178
179 - Fixed some oversights which were in patch 2.1.78.
180
181 - Fixed a few typos.
182
183 Version 3.6
184 -----------
185
186 - dentry changes. (Thanks to Jes Sorensen for his help.)
187
188 - Fixed bug in balloc(): Superblock was not set dirty after
189 the bitmap was changed, so the bitmap wasn't sync'd.
190
191 - Fixed nasty bug in find_new_zone(): If the current
192 zone number was zero, the loop didn't terminate,
193 causing a solid lock-up.
194
195 - Removed support for old-style directory reads.
196
197 - Fixed bug in add_entry(): When doing a sorted insert,
198 the pointer to the next entry in the hash chain wasn't
199 correctly byte-swapped. Since most of the users of the
200 affs use it on a 68k, they didn't notice. But why did
201 I not find this during my tests?
202
203 - Fixed some oversights (version wasn't updated on some
204 directory changes).
205
206 - Handling of hard links rewritten. To the VFS
207 they appear now as normal Unix links. They are
208 now resolved only once in lookup(). The backside
209 is that unlink(), rename() and rmdir() have to
210 be smart about them, but the result is worth the
211 effort. This also led to some code cleanup.
212
213 - Changed name type to unsigned char; the test for
214 invalid filenames didn't work correctly.
215 (Thanks to Michael Krause for pointing at this.)
216
217 - Changed mapping of executable flag.
218
219 - Changed all network byte-order macros to the
220 recommended ones.
221
222 - Added a remount function, so attempts to remount
223 a dircache filesystem or one with errors read/write
224 can be trapped. Previously, ro remounts didn't
225 flush the super block, and rw remounts didn't
226 create allocation zones ...
227
228 - Call shrink_dcache_parent() in rmdir().
229 (Thanks to Bill Hawes.)
230
231 - Permission checks in unlink().
232
233 - Allow mounting of volumes with superfluous
234 bitmap pointers read only, also allows them
235 to be remounted read/write.
236
237 - Owner/Group defaults now to the fs user (i.e.
238 the one that mounted it) instead of root. This
239 obsoletes the mount options uid and gid.
240
241 - Argument to volume option could overflow the
242 name buffer. It is now silently truncated to
243 30 characters. (Damn it! This kind of bug
244 is too embarrassing.)
245
246 - Split inode.c into 2 files, the superblock
247 routines desperately wanted their own file.
248
249 - truncate() didn't allocate an extension block
250 cache. If a file was extended by means of
251 truncate(), this led to an Oops.
252
253 - fsuser is now checked last.
254
255 - rename() will not ignore changes in filename
256 casing any more (though mv(1) still won't allow
257 you to do "mv oldname OldName").
258
259 Version 3.5
260 -----------
261
262 - Extension block caches are now allocated on
263 demand instead of when a file is opened, as
264 files can be read and written without opening
265 them (e. g. the loopback device does this).
266
267 - Removed an unused function.
268
269 Version 3.4
270 -----------
271
272 - Hash chains are now sorted by block numbers.
273 (Thanks to Kars de Jong for finding this.)
274 - Removed all unnecessary external symbols.
275
276 Version 3.3
277 -----------
278
279 - Tried to make all types 'correct' and consistent.
280 - Errors and warnings are now reported via a
281 function. They are all prefixed by a severity
282 and have the same appearance:
283 "AFFS: <function>: <error message>"
284 (There's one exception to this, as in that function
285 is no pointer to the super block available.)
286 - The filesystem is remounted read-only after an
287 error.
288 - The names of newly created filesystem objects are
289 now checked for validity.
290 - Minor cleanups in comments.
291 - Added this Changes file. At last!
292
293 Version 3.2
294 -----------
295
296 - Extension block cache: Reading/writing of huge files
297 (several MB) is much faster (of course the added
298 overhead slows down opening, but this is hardly
299 noticeable).
300 - The same get_block()-routine can now be used for
301 both OFS and FFS.
302 - The super block is now searched in the block that
303 was calculated and in the one following. This
304 should remedy the round-off error introduced by
305 the 1-k blocks that Linux uses.
306 - Minor changes to adhere to the new VFS interface.
307 - The number of used blocks is now also calculated
308 if the filesystem is mounted read-only.
309 - Prefixed some constants with AFFS_ to avoid name
310 clashes.
311 - Removed 'EXPERIMENTAL' status.
312
313 Version 3.1
314 -----------
315
316 - Fixed a nasty bug which didn't allow read-only
317 mounts.
318 - Allow dir-cache filesystems to be mounted
319 read only.
320 - OFS support.
321 - Several other changes I just cannot remember
322 any more.
323
324 Version 3.0
325 -----------
326
327 - Almost complete rewrite for the new VFS
328 interface in Linux 1.3.
329 - Write support.
330 - Support for hard and symbolic links.
331 - Lots of things I remember even less ...
332
333 Version 2.0
334 -----------
335
336 - Fixed a few things to get it compiled.
337 - Automatic root block calculation.
338 - Partition checker for genhd.c
339
340 ========================================
341
342 Let's just call Ray Burr's original affs
343 'Version 1.0'.
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