a505fd6651
FS cleanup.
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Add utility routines bzero, readsb so that balloc, bfree fit on one page.
Make balloc loop clearer.
2007-08-27 14:20:24 +00:00
8d2e9a4867
shuffle for formatting
2007-08-24 22:17:54 +00:00
766ba5cc06
first ever correct use of strncpy
2007-08-24 21:00:02 +00:00
07090dd705
Remove struct uinode.
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Remove type arg to mknod (assume T_DEV).
2007-08-24 20:54:23 +00:00
4d39b63388
nits
2007-08-24 19:46:19 +00:00
902b13f5d6
simplify ide queuing
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nits in comments
2007-08-24 19:32:36 +00:00
2036534834
add missing iput() at end of _namei()
2007-08-24 14:56:17 +00:00
f0721f1be4
tweaks
2007-08-22 06:20:10 +00:00
eaea18cb9c
PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf
...
Various changes made while offline.
+ bwrite sector argument is redundant; use b->sector.
+ reformatting of files for nicer PDF page breaks
+ distinguish between locked, unlocked inodes in type signatures
+ change FD_FILE to FD_INODE
+ move userinit (nee proc0init) to proc.c
+ move ROOTDEV to param.h
+ always parenthesize sizeof argument
2007-08-22 06:01:32 +00:00
fbf9103952
remove namelen parameter
2007-08-21 19:58:55 +00:00
f32f3638f4
Various cleanup:
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- Got rid of dummy proc[0]. Now proc[0] is init.
- Added initcode.S to exec /init, so that /init is
just a regular binary.
- Moved exec out of sysfile to exec.c
- Moved code dealing with fs guts (like struct inode)
from sysfile.c to fs.c. Code dealing with system call
arguments stays in sysfile.c
- Refactored directory routines in fs.c; should be simpler.
- Changed iget to return *unlocked* inode structure.
This solves the lookup-then-use race in namei
without introducing deadlocks.
It also enabled getting rid of the dummy proc[0].
2007-08-21 19:22:08 +00:00
e2a620da49
checkpoint - simpler namei interface
2007-08-20 19:37:15 +00:00
bcca6c6bde
shuffle fs.c in bottom-up order
2007-08-20 18:23:52 +00:00
7d4aef6cfd
various cleanups
2007-08-10 16:52:31 +00:00
b6095304b7
Make cp a magic symbol.
2007-08-10 16:37:27 +00:00
bc01170334
The final curproc[cpu()] is now cp
2007-08-09 19:06:37 +00:00
ab5c2dbb59
Clearer namei
2007-08-09 19:05:00 +00:00
95c07f8267
move ialloc body up, avoiding double check for end of loop
2007-08-08 09:53:46 +00:00
32eea7665a
panic like bget
2007-08-08 09:50:46 +00:00
d80b06a1e0
iincref returns new ref
2007-08-08 09:30:42 +00:00
5f0c20ec14
fix . .. unlink bug
2007-08-08 09:08:29 +00:00
8e1d1ec934
some comment changes
2006-09-08 14:36:44 +00:00
be29b8e263
++
2006-09-08 14:26:16 +00:00
d911d83ca1
fix various comments
2006-09-08 13:55:43 +00:00
1542186378
allow long names again
2006-09-07 15:34:28 +00:00
0d6bbd3172
clean namei search loop
2006-09-07 15:15:32 +00:00
bb207a1d42
comments
2006-09-07 14:28:12 +00:00
1dca3afbbb
remove _ prefixes
2006-09-07 13:08:23 +00:00
0cfc7290e8
wrap long lines
2006-09-06 19:08:14 +00:00
db8fb62e4d
for vs while
2006-09-06 18:47:51 +00:00
48b824703b
break single-line if statements
2006-09-06 17:57:47 +00:00
f552738889
no /* */ comments
2006-09-06 17:50:20 +00:00
9e9bcaf143
standardize various * conventions
2006-09-06 17:27:19 +00:00
a650c606fe
spacing fixes: no tabs, 2-space indents (for rtm)
2006-09-06 17:04:06 +00:00
2aa4c3bc29
complain if no disk 1
...
lots of cleanup
2006-08-30 18:55:06 +00:00
7a37578e9e
clear killed flag in exit
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idecref cwd in exit
2006-08-29 19:59:52 +00:00
03c70cc2e6
consistently ignore more than 14 chars in path component
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forbid create or write of existing directory
mkdir("d1/d2/d3"), .. should refer to d2, not cwd
mkdir increase parent link count
2006-08-26 16:31:05 +00:00
5051da6de3
inode addrs[NDIRECT] -> NADDRS
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fix race in mknod / creat
use last component in dirent in mknod, not path
2006-08-25 01:11:30 +00:00
bcfb84b6a9
big directory test
2006-08-24 19:21:19 +00:00
1be7668537
fix bugs in indirect-file code
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clean up test program
2006-08-24 17:28:01 +00:00
ea2909b6b5
user-level malloc (untested)
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nit in sbrk
indirect block
fix dup to share fd struct
2006-08-24 02:44:41 +00:00
8787cd01df
chdir
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cd in shell
nits in mkdir, ls, etc.
2006-08-19 23:41:34 +00:00
e958c538fa
commented out code for cwd
2006-08-15 15:53:46 +00:00
bdb6643303
set size for directories correctly in wdir and mkfs
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mkdir
ls shows stat info for each dir entry
2006-08-14 14:13:52 +00:00
e4bcd2a3a9
wdir now uses readi/writei
2006-08-13 20:06:42 +00:00
17e3cf15ba
fix iget() bug that allocated in-use inode[] entries
2006-08-13 15:51:58 +00:00
211ff0c67e
namei returns locked parent dir inode for create / unlink
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don't hold fd table lock across idecref() (latter does block i/o)
idecref calls iput() in case last ref -> freeing inode
dir size is 512 * # blocks, so readi/writei &c work
unlink deletes dirent even if ip->nlink > 0
2006-08-13 12:22:44 +00:00
c372e8dc34
zero freed blocks
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multi-block directories
track size of directory (size = number entries in use)
should namei (and other code that scans through directories) scan through all blocks of a directory and not use size?
2006-08-13 05:28:04 +00:00
9e5970d596
link()
2006-08-13 02:12:44 +00:00
05e975511b
zero out all of dirent.name when creating
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don't increase length of directory
2006-08-12 22:44:26 +00:00
rsc