diff options
Diffstat (limited to 'qemu/roms/SLOF/slof/fs/packages/ext2-files.fs')
| -rw-r--r-- | qemu/roms/SLOF/slof/fs/packages/ext2-files.fs | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/qemu/roms/SLOF/slof/fs/packages/ext2-files.fs b/qemu/roms/SLOF/slof/fs/packages/ext2-files.fs deleted file mode 100644 index 262c64a34..000000000 --- a/qemu/roms/SLOF/slof/fs/packages/ext2-files.fs +++ /dev/null @@ -1,188 +0,0 @@ -\ ***************************************************************************** -\ * Copyright (c) 2004, 2011 IBM Corporation -\ * All rights reserved. -\ * This program and the accompanying materials -\ * are made available under the terms of the BSD License -\ * which accompanies this distribution, and is available at -\ * http://www.opensource.org/licenses/bsd-license.php -\ * -\ * Contributors: -\ * IBM Corporation - initial implementation -\ ****************************************************************************/ -s" ext2-files" device-name - -INSTANCE VARIABLE first-block -INSTANCE VARIABLE inode-size -INSTANCE VARIABLE block-size -INSTANCE VARIABLE inodes/group - -INSTANCE VARIABLE group-desc-size -INSTANCE VARIABLE group-descriptors - -: seek s" seek" $call-parent ; -: read s" read" $call-parent ; - -INSTANCE VARIABLE data -INSTANCE VARIABLE #data -INSTANCE VARIABLE indirect-block -INSTANCE VARIABLE dindirect-block - -: free-data - data @ ?dup IF #data @ free-mem 0 data ! THEN ; -: read-data ( offset size -- ) - free-data dup #data ! alloc-mem data ! - xlsplit seek -2 and ABORT" ext2-files read-data: seek failed" - data @ #data @ read #data @ <> ABORT" ext2-files read-data: read failed" ; - -: read-block ( block# -- ) - block-size @ * block-size @ read-data ; - -INSTANCE VARIABLE inode -INSTANCE VARIABLE file-len -INSTANCE VARIABLE blocks -INSTANCE VARIABLE #blocks -INSTANCE VARIABLE ^blocks -INSTANCE VARIABLE #blocks-left -: blocks-read ( n -- ) dup negate #blocks-left +! 4 * ^blocks +! ; -: read-indirect-blocks ( indirect-block# -- ) - read-block data @ data off - dup #blocks-left @ 4 * block-size @ min dup >r ^blocks @ swap move - r> 2 rshift blocks-read block-size @ free-mem ; - -: read-double-indirect-blocks ( double-indirect-block# -- ) - \ Resolve one level of indirection and call read-indirect-block - read-block data @ indirect-block ! data off - BEGIN - indirect-block @ l@-le dup 0 <> - WHILE - read-indirect-blocks - 4 indirect-block +! \ point to next indirect block - REPEAT - drop \ drop 0, the invalid block number -; - -: read-triple-indirect-blocks ( triple-indirect-block# -- ) - \ Resolve one level of indirection and call double-indirect-block - read-block data @ dindirect-block ! data off - BEGIN - dindirect-block @ l@-le dup 0 <> - WHILE - read-double-indirect-blocks - 4 dindirect-block +! \ point to next double indirect block - REPEAT - drop \ drop 0, the invalid block number -; - -: read-block#s ( -- ) - blocks @ ?dup IF #blocks @ 4 * free-mem THEN - inode @ 4 + l@-le file-len ! - file-len @ block-size @ // #blocks ! - #blocks @ 4 * alloc-mem blocks ! - blocks @ ^blocks ! #blocks @ #blocks-left ! - #blocks-left @ c min \ # direct blocks - inode @ 28 + over 4 * ^blocks @ swap move blocks-read - #blocks-left @ IF inode @ 58 + l@-le read-indirect-blocks THEN - #blocks-left @ IF inode @ 5c + l@-le read-double-indirect-blocks THEN - #blocks-left @ IF inode @ 60 + l@-le read-triple-indirect-blocks THEN ; -: read-inode ( inode# -- ) - 1- inodes/group @ u/mod \ # in group, group # - 20 * group-descriptors @ + 8 + l@-le block-size @ * \ # in group, inode table - swap inode-size @ * + xlsplit seek drop inode @ inode-size @ read drop -; - -: .rwx ( bits last-char-if-special special? -- ) - rot dup 4 and IF ." r" ELSE ." -" THEN - dup 2 and IF ." w" ELSE ." -" THEN - swap IF 1 and 0= IF upc THEN emit ELSE - 1 and IF ." x" ELSE ." -" THEN drop THEN ; -CREATE mode-chars 10 allot s" ?pc?d?b?-?l?s???" mode-chars swap move -: .mode ( mode -- ) - dup c rshift f and mode-chars + c@ emit - dup 6 rshift 7 and over 800 and 73 swap .rwx - dup 3 rshift 7 and over 400 and 73 swap .rwx - dup 7 and swap 200 and 74 swap .rwx ; -: .inode ( -- ) - base @ >r decimal - inode @ w@-le .mode \ file mode - inode @ 1a + w@-le 5 .r \ link count - inode @ 02 + w@-le 9 .r \ uid - inode @ 18 + w@-le 9 .r \ gid - inode @ 04 + l@-le 9 .r \ size - r> base ! ; - -: do-super ( -- ) - 400 400 read-data - data @ 14 + l@-le first-block ! - 400 data @ 18 + l@-le lshift block-size ! - data @ 28 + l@-le inodes/group ! - \ Check revision level... in revision 0, the inode size is always 128 - data @ 4c + l@-le 0= IF - 80 inode-size ! - ELSE - data @ 58 + w@-le inode-size ! - THEN - data @ 20 + l@-le group-desc-size ! - - \ Read the group descriptor table: - first-block @ 1+ block-size @ * - group-desc-size @ - read-data - data @ group-descriptors ! - - \ We keep the group-descriptor memory area, so clear data pointer: - data off -; - -INSTANCE VARIABLE current-pos - -: read ( adr len -- actual ) - file-len @ current-pos @ - min \ can't go past end of file - current-pos @ block-size @ u/mod 4 * blocks @ + l@-le read-block - block-size @ over - rot min >r ( adr off r: len ) - data @ + swap r@ move r> dup current-pos +! ; -: read ( adr len -- actual ) - ( check if a file is selected, first ) - dup >r BEGIN dup WHILE 2dup read dup 0= ABORT" ext2-files: read failed" - /string REPEAT 2drop r> ; -: seek ( lo hi -- status ) - lxjoin dup file-len @ > IF drop true EXIT THEN current-pos ! false ; -: load ( adr -- len ) - file-len @ read dup file-len @ <> ABORT" ext2-files: failed loading file" ; - -: .name ( adr -- ) dup 8 + swap 6 + c@ type ; -: read-dir ( inode# -- adr ) - read-inode read-block#s file-len @ alloc-mem - 0 0 seek ABORT" ext2-files read-dir: seek failed" - dup file-len @ read file-len @ <> ABORT" ext2-files read-dir: read failed" ; -: .dir ( inode# -- ) - read-dir dup BEGIN 2dup file-len @ - > over l@-le tuck and WHILE - cr dup 8 0.r space read-inode .inode space space dup .name - dup 4 + w@-le + REPEAT 2drop file-len @ free-mem ; -: (find-file) ( adr name len -- inode#|0 ) - 2>r dup BEGIN 2dup file-len @ - > over l@-le and WHILE - dup 8 + over 6 + c@ 2r@ str= IF 2r> 2drop nip l@-le EXIT THEN - dup 4 + w@-le + REPEAT 2drop 2r> 2drop 0 ; -: find-file ( inode# name len -- inode#|0 ) - 2>r read-dir dup 2r> (find-file) swap file-len @ free-mem ; -: find-path ( inode# name len -- inode#|0 ) - dup 0= IF 3drop 0 ." empty name " EXIT THEN - over c@ [char] \ = IF 1 /string ." slash " RECURSE EXIT THEN - [char] \ split 2>r find-file ?dup 0= IF - 2r> 2drop false ." not found " EXIT THEN - r@ 0<> IF 2r> ." more... " RECURSE EXIT THEN - 2r> 2drop ." got it " ; - -: close - inode @ inode-size @ free-mem - group-descriptors @ group-desc-size @ free-mem - free-data - blocks @ ?dup IF #blocks @ 4 * free-mem THEN -; - -: open - 0 data ! 0 blocks ! 0 #blocks ! - do-super - inode-size @ alloc-mem inode ! - my-args nip 0= IF 0 0 ELSE - 2 my-args find-path ?dup 0= IF close false EXIT THEN THEN - read-inode read-block#s 0 0 seek 0= ; |