1 Version 0.92 (2002-03-29) 2 ========== 3 * Minor cleanup. Ran Lindent on the sources. 4 5 Version 0.92 (2002-03-27) 6 ========== 7 * Fixed module makefile problem. It was not compiling all the correct 8 source files! 9 * Removed duplicated function definition 10 * Fixed potential null pointer dereference when reporting an error 11 12 Version 0.91 (2002-03-26) 13 ========== 14 * Oy! Fixed stupid bug that would cause an unresolved symbol error. 15 Thanks to Laszlo Boszormenyi for pointing this out to me. 16 17 Version 0.9 (2002-03-14) 18 ========== 19 * Added Sergey S. Kostyliov's patch to eliminate memcpy() overhead 20 from b+tree operations. Changes the befs_read_datastream() interface. 21 22 * Segregated the functions that interface directly with the linux vfs 23 interface into their own file called linuxvfs.c. [WD] 24 25 Version 0.64 (2002-02-07) 26 ========== 27 * Did the string comparison really right this time (btree.c) [WD] 28 29 * Fixed up some places where I assumed that a long int could hold 30 a pointer value. (btree.c) [WD] 31 32 * Andrew Farnham <andrewfarnham@uq.net.au> pointed out that the module 33 wouldn't work on older (<2.4.10) kernels due to an unresolved symbol. 34 This is bad, since 2.4.9 is still the current RedHat kernel. I added 35 a workaround for this problem (compatibility.h) [WD] 36 37 * Sergey S. Kostyliov made befs_find_key() use a binary search to find 38 keys within btree nodes, rather than the linear search we were using 39 before. (btree.c) [Sergey S. Kostyliov <rathamahata@php4.ru>] 40 41 * Made a debian package of the source for use with kernel-package. [WD] 42 43 44 Version 0.63 (2002-01-31) 45 ========== 46 * Fixed bug in befs_find_brun_indirect() that would result in the wrong 47 block being read. It was introduced when adding byteswapping in 48 0.61. (datastream.c) [WD] 49 50 * Fixed a longstanding bug in befs_find_key() that would result in it 51 finding the first key that is a substring of the string it is searching 52 for. For example, this would cause files in the same directory with 53 names like file1 and file2 to mysteriously be duplicates of each other 54 (because they have the same inode number). Many thanks to Pavel Roskin 55 for reporting this serious bug!!! 56 (btree.c) [WD] 57 58 * Added support for long symlinks, after Axel Dorfler explained up how 59 they work. I had forgotten all about them. (inode.c, symlink.c) [WD] 60 61 * Documentation improvements in source. [WD] 62 63 * Makefile fix for independent module when CONFIG_MODVERSION is set in 64 kernel config [Pavel Roskin <proski@gnu.org>] 65 66 * Compile warning fix for namei.c. [Sergey S. Kostyliov <rathamahata@php4.ru>] 67 68 69 Version 0.62 70 ========== 71 * Fixed makefile for module install [WD] 72 73 74 Version 0.61 (2002-01-20) 75 ========== 76 * Made functions in endian.h to do the correct byteswapping, no matter 77 the arch. [WD] 78 79 * Abbandoned silly checks for a NULL superblock pointer in debug.c. [WD] 80 81 * Misc code cleanups. Also cleanup of this changelog file. [WD] 82 83 * Added byteswapping to all metadata reads from disk. 84 Uses the functions from endian.h [WD] 85 86 * Remove the typedef of struct super_block to vfs_sb, as it offended 87 certain peoples' aesthetic sense. [WD] 88 89 * Ditto with the befs_read_block() interface. [WD] 90 91 92 Version 0.6 (2001-12-15) 93 ========== 94 * Cleanup of NLS functions (util.c) [WD] 95 96 * Make directory lookup/read use the NLS if an iocharset is provided. [WD] 97 98 * Fixed stupid bug where specifying the uid or gid mount options as '0' 99 would result in the filesystem using the on-disk uid and gid. [WD] 100 101 * Added mount option to control debug printing. 102 The option is, simply enough, 'debug'. 103 (super.c, debug.c) [WD] 104 105 * Removed notion of btree handle from btree.c. It was unnecessary, as the 106 linux VFS doesn't allow us to keep any state between calls. Updated 107 dir.c, namei.c befs_fs.h to account for it. [WD] 108 109 * Improved handleing of overflow nodes when listing directories. 110 Now works for overflow nodes hanging off of nodes other than the root 111 node. This is the cleaner solution to Brent Miszalaski's problem. [WD] 112 113 * Added new debug/warning/error print functions in debug.c. 114 More flexible. Will soon be controllable at mount time 115 (see TODO). [WD] 116 117 * Rewrote datastream position lookups. 118 (datastream.c) [WD] 119 120 * Moved the TODO list to its own file. 121 122 123 Version 0.50 (2001-11-13) 124 ========== 125 * Added workaround for mis-understanding of the nature of the b+trees used 126 in directories. A cleaner solution will come after I've thought about it 127 for a while. Thanks to Brent Miszalaski for finding and reporting this bug. 128 (btree.c) [WD] 129 130 * Minor cleanups 131 132 * Added test for "impossible" condition of empty internal nodes in 133 seekleaf() in btree.c [WD] 134 135 * Implemented the abstracted read_block() in io.c [WD] 136 137 * Cleaned up the inode validation in inode.c [WD] 138 139 * Anton Altaparmakov figured out (by asking Linus :) ) what was causing the 140 hanging disk io problem. It turns out you need to have the sync_pages 141 callback defined in your address_space_ops, even if it just uses the 142 default linux-supplied implementation. Fixed. Works now. 143 (file.c) [WD] 144 145 * Anton Altaparmakov and Christoph Hellwig alerted me to the fact that 146 filesystem code should be using GFP_NOFS instead of GFP_KERNEL as the 147 priority parameter to kmalloc(). Fixed. 148 (datastream.c, btree.c super.c inode.c) [WD] 149 150 * Anton also told me that the blocksize is not allowed to be larger than 151 the page size in linux, which is 4k i386. Oops. Added a test for 152 (blocksize > PAGE_SIZE), and refuse to mount in that case. What this 153 practically means is that 8k blocksize volumes won't work without a major 154 restructuring of the driver (or an alpha or other 64bit hardware). [WD] 155 156 * Cleaned up the befs_count_blocks() function. Much smarter now. 157 And somewhat smaller too. [WD] 158 159 * Made inode allocations use a slab cache 160 (super.c inode.c) [WD] 161 162 * Moved the freeing of the private inode section from put_inode() to 163 clear_inode(). This fixes a potential free twice type bug. Put_inode() 164 can be called multiple times for each inode struct. [WD] 165 166 * Converted all non vfs-callback functions to use befs_sb_info as the 167 superblock type, rather than struct super_block. This is for 168 portablity. [WD] 169 170 * Fixed a couple of compile warnings due to use of malloc.h, when slab.h 171 is the new way. (inode.c, super.c) [WD] 172 173 * Fixed erronous includes of linux/befs_fs_i.h and linux/befs_fs_sb.h 174 in inode.c [WD] 175 176 Version 0.45 (2001-10-29) 177 ========== 178 * Added functions to get the private superblock and inode structures from 179 their enclosing public structures. Switched all references to the 180 private portions to use them. (many files) [WD] 181 182 * Made read_super and read_inode allocate the private portions of those 183 structures into the generic pointer fields of the public structures 184 with kmalloc(). put_super and put_inode free them. This allows us not 185 to have to touch the definitions of the public structures in 186 include/linux/fs.h. Also, befs_inode_info is huge (because of the 187 symlink string). (super.c, inode.c, befs_fs.h) [WD] 188 189 * Fixed a thinko that was corrupting file reads after the first block_run 190 is done being read. (datastream.c) [WD] 191 192 * Removed fsync() hooks, since a read-only filesystem doesn't need them. 193 [Christoph Hellwig]. 194 195 * Fixed befs_readlink() (symlink.c) [Christoph Hellwig]. 196 197 * Removed all the Read-Write stuff. I'll redo it when it is time to add 198 write support (various files) [WD]. 199 200 * Removed prototypes for functions who's definitions have been removed 201 (befs_fs.h) [WD]. 202 203 204 Version 0.4 (2001-10-28) 205 ========== 206 * Made it an option to use the old non-pagecache befs_file_read() for 207 testing purposes. (fs/Config.in) 208 209 * Fixed unused variable warnings when compiling without debugging. 210 211 * Fixed a bug where the inode and super_block didn't get their blockbits 212 fields set (inode.c and super.c). 213 214 * Release patch version 11. AKA befs-driver version 0.4. 215 216 * Thats right. New versioning scheme. 217 I've done some serious testing on it now (on my box anyhow), and it 218 seems stable and not outragously slow. Existing features are more-or-less 219 correct (see TODO list). But it isn't 1.0 yet. I think 0.4 gives me some 220 headroom before the big 1.0. 221 222 223 2001-10-26 224 ========== 225 * Fixed date format in this file. Was I smoking crack? 226 227 * Removed old datastream code from file.c, since it is nolonger used. 228 229 * Generic_read_file() is now used to read regular file data. 230 It doesn't chew up the buffer cache (it does page io instead), and seems 231 to be about as fast (even though it has to look up each file block 232 indivdualy). And it knows about doing readahead, which is a major plus. 233 So it does i/o in much larger chunks. It is the correct linux way. It 234 uses befs_get_block() by way of befs_readpage() to find the disk offsets 235 of blocks, which in turn calls befs_fpos2brun() in datastream.c to do 236 the hard work of finding the disk block number. 237 238 * Changed method of checking for a dirty filesystem in befs_read_super 239 (super.c). Now we check to see if log_start and log_end differ. If so, 240 the journal needs to be replayed, and the filesystem cannot be mounted. 241 242 * Fixed an extra instance of MOD_DEC_USE_COUNT in super.c 243 244 * Fixed a problem with reading the superblock on devices with large sector 245 sizes (such as cdroms) on linux 2.4.10 and up. 246 247 2001-10-24 248 ========== 249 * Fix nasty bug in converting block numbers to struct befs_inode_addr. 250 Subtle, because the old version was only sometimes wrong. 251 Probably responsible for lots of problems. (inode.c) 252 253 * Fix bug with reading an empty directory. (btree.c and dir.c) 254 255 * This one looks good. Release patch version 10 256 257 2001-10-23 258 ========== 259 * Added btree searching function. 260 261 * Use befs_btree_find in befs_lookup (namei.c) 262 263 * Additional comments in btree.c 264 265 2001-10-22 266 ========== 267 * Added B+tree reading functions (in btree.c). 268 Made befs_readdir() use them them instead of the cruft in index.c. 269 270 2001-09-11 271 ========== 272 * Converted befs_read_file() to use the new datastream code. 273 274 * Finally updated the README file. 275 276 * Added many comments. 277 278 * Posted version 6 279 280 * Removed byte-order conversion code. 281 I have no intention of supporting it, and it was very ugly. 282 Flow control with #ifdef (ugh). Maybe I'll redo it once 283 native byteorder works 100%. 284 285 2001-09-10 286 ========== 287 * Finished implementing read_datastream() 288 289 * made befs_read_brun() more general 290 Supports an offset to start at and a max bytes to read 291 Added a wrapper function to give the old call 292 293 2001-09-30 294 ========== 295 * Discovered that the datastream handleing code in file.c is quite deficient 296 in several respects. For one thing, it doesn't deal with indirect blocks 297 298 * Rewrote datastream handleing. 299 300 * Created io.c, for io related functions. 301 Previously, the befs_bread() funtions lived in file.c 302 Created the befs_read_brun() function. 303 304 305 2001-09-07 306 ========== 307 * Made a function to actually count the number of fs blocks used by a file. 308 And helper functions. 309 (fs/befs/inode.c) 310 311 2001-09-05 312 ========== 313 * Fixed a misunderstanding of the inode fields. 314 This fixed the problmem with wrong file sizes from du and others. 315 The i_blocks field of the inode struct is not the number of blocks for the 316 inode, it is the number of blocks for the file. Also, i_blksize is not 317 necessarily the size of the inode, although in practice it works out. 318 Changed to blocksize of filesystem. 319 (fs/befs/inode.c) 320 321 * Permanently removed code that had been provisionally ifdefed out of befs_fs.h 322 323 * Since we don't support access time, make that field zero, instead of 324 copying m_time. 325 (fs/befs/inode.c) 326 327 * Added sanity check for inode reading 328 Make sure inode we got was the one we asked for. 329 (fs/befs/inode.c) 330 331 * Code cleanup 332 Local pointers to commonly used structures in inode.c. 333 Got rid of abominations befs_iaddr2inode() and befs_inode2ino(). 334 Replaced with single function iaddr2blockno(). 335 (fs/befs/super.c) (fs/befs/inode.c) 336 337 2001-09-01 338 ========== 339 * Fixed the problem with statfs where it would always claim the disk was 340 half full, due to improper understanding of the statfs fields. 341 (fs/befs/super.c) 342 343 * Posted verion 4 of the patch 344 345 2001-09-01 346 ========== 347 * Changed the macros in befs_fs.h to inline functions. 348 More readable. Typesafe. Better 349 (include/linux/befs_fs.h) 350 351 * Moved type definitions from befs_fs.h to a new file, befs_fs_types.h 352 Because befs_fs_i.h and befs_fs_sb.h were including befs_fs.h for the 353 typedefs, and they are inlcuded in <linux/fs.h>, which has definitions 354 that I want the inline functions in befs_fs.h to be able to see. Nasty 355 circularity. 356 (include/linux/befs_fs.h) 357 358 2001-08-30 359 ========== 360 * Cleaned up some wording. 361 362 * Added additional consitency checks on mount 363 Check block_size agrees with block_shift 364 Check flags == BEFS_CLEAN 365 (fs/befs/super.c) 366 367 * Tell the kernel to only mount befs read-only. 368 By setting the SB_RDONLY flag in befs_read_super(). 369 Not that it was possible to write before. But now the kernel won't even try. 370 (fs/befs/super.c) 371 372 * Got rid of kernel warning on mount. 373 The kernel doesn't like it if you call set_blocksize() on a device when 374 you have some of its blocks open. Moved the second set_blocksize() to the 375 very end of befs_read_super(), after we are done with the disk superblock. 376 (fs/befs/super.c) 377 378 * Fixed wrong number of args bug in befs_dump_inode 379 (fs/befs/debug.c) 380 381 * Solved lots of type mismatches in kprint()s 382 (everwhere) 383 384 2001-08-27 385 ========== 386 * Cleaned up the fs/Config.in entries a bit, now slightly more descriptive. 387 388 * BeFS depends on NLS, so I made activating BeFS enable the NLS questions 389 (fs/nls/Config.in) 390 391 * Added Configure.help entries for CONFIG_BEFS_FS and CONFIG_DEBUG_BEFS 392 (currently at fs/befs/Kconfig) 393 394 2001-08-?? 395 ========== 396 * Removed superblock locking calls in befs_read_super(). In 2.4, the VFS 397 hands us a super_block struct that is already locked. 398 399 2001-08-13 400 ========== 401 * Will Dyson <will_dyson@pobox.com> is now attempting to maintain this module 402 Makoto Kato <m_kato@ga2.so-net.ne.jp> is original author.Daniel Berlin 403 also did some work on it (fixing it up for the later 2.3.x kernels, IIRC). 404 405 * Fixed compile errors on 2.4.1 kernel (WD) 406 Resolve rejected patches 407 Accommodate changed NLS interface (util.h) 408 Needed to include <linux/slab.h> in most files 409 Makefile changes 410 fs/Config.in changes 411 412 * Tried to niceify the code using the ext2 fs as a guide 413 Declare befs_fs_type using the DECLARE_FSTYPE_DEV() macro 414 415 * Made it a configure option to turn on debugging (fs/Config.in) 416 417 * Compiles on 2.4.7
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