greg/xv6
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
341 commits 2 branches 0 tags 12 MiB
Commit graph

62 commits

Author SHA1 Message Date
rsc
f0721f1be4 tweaks 2007-08-22 06:20:10 +00:00
rsc
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
rsc
fbf9103952 remove namelen parameter 2007-08-21 19:58:55 +00:00
rsc
f32f3638f4 Various cleanup: 
- 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
rsc
e2a620da49 checkpoint - simpler namei interface 2007-08-20 19:37:15 +00:00
rsc
bcca6c6bde shuffle fs.c in bottom-up order 2007-08-20 18:23:52 +00:00
rsc
7d4aef6cfd various cleanups 2007-08-10 16:52:31 +00:00
rsc
b6095304b7 Make cp a magic symbol. 2007-08-10 16:37:27 +00:00
rsc
bc01170334 The final curproc[cpu()] is now cp 2007-08-09 19:06:37 +00:00
rsc
ab5c2dbb59 Clearer namei 2007-08-09 19:05:00 +00:00
rsc
95c07f8267 move ialloc body up, avoiding double check for end of loop 2007-08-08 09:53:46 +00:00
rsc
32eea7665a panic like bget 2007-08-08 09:50:46 +00:00
rsc
d80b06a1e0 iincref returns new ref 2007-08-08 09:30:42 +00:00
rsc
5f0c20ec14 fix . .. unlink bug 2007-08-08 09:08:29 +00:00
kaashoek
8e1d1ec934 some comment changes 2006-09-08 14:36:44 +00:00
rsc
be29b8e263 ++ 2006-09-08 14:26:16 +00:00
rsc
d911d83ca1 fix various comments 2006-09-08 13:55:43 +00:00
rsc
1542186378 allow long names again 2006-09-07 15:34:28 +00:00
rsc
0d6bbd3172 clean namei search loop 2006-09-07 15:15:32 +00:00
rsc
bb207a1d42 comments 2006-09-07 14:28:12 +00:00
rsc
1dca3afbbb remove _ prefixes 2006-09-07 13:08:23 +00:00
rsc
0cfc7290e8 wrap long lines 2006-09-06 19:08:14 +00:00
rsc
db8fb62e4d for vs while 2006-09-06 18:47:51 +00:00
rsc
48b824703b break single-line if statements 2006-09-06 17:57:47 +00:00
rsc
f552738889 no /* */ comments 2006-09-06 17:50:20 +00:00
rsc
9e9bcaf143 standardize various * conventions 2006-09-06 17:27:19 +00:00
rsc
a650c606fe spacing fixes: no tabs, 2-space indents (for rtm) 2006-09-06 17:04:06 +00:00
rtm
2aa4c3bc29 complain if no disk 1 
lots of cleanup
 2006-08-30 18:55:06 +00:00
rtm
7a37578e9e clear killed flag in exit 
idecref cwd in exit
 2006-08-29 19:59:52 +00:00
rtm
03c70cc2e6 consistently ignore more than 14 chars in path component 
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
rtm
5051da6de3 inode addrs[NDIRECT] -> NADDRS 
fix race in mknod / creat
use last component in dirent in mknod, not path
 2006-08-25 01:11:30 +00:00
rtm
bcfb84b6a9 big directory test 2006-08-24 19:21:19 +00:00
kaashoek
1be7668537 fix bugs in indirect-file code 
clean up test program
 2006-08-24 17:28:01 +00:00
kaashoek
ea2909b6b5 user-level malloc (untested) 
nit in sbrk
indirect block
fix dup to share fd struct
 2006-08-24 02:44:41 +00:00
kaashoek
8787cd01df chdir 
cd in shell
nits in mkdir, ls, etc.
 2006-08-19 23:41:34 +00:00
kaashoek
e958c538fa commented out code for cwd 2006-08-15 15:53:46 +00:00
kaashoek
bdb6643303 set size for directories correctly in wdir and mkfs 
mkdir
ls shows stat info for each dir entry
 2006-08-14 14:13:52 +00:00
rtm
e4bcd2a3a9 wdir now uses readi/writei 2006-08-13 20:06:42 +00:00
rtm
17e3cf15ba fix iget() bug that allocated in-use inode[] entries 2006-08-13 15:51:58 +00:00
rtm
211ff0c67e namei returns locked parent dir inode for create / unlink 
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
kaashoek
c372e8dc34 zero freed blocks 
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
rtm
9e5970d596 link() 2006-08-13 02:12:44 +00:00
rtm
05e975511b zero out all of dirent.name when creating 
don't increase length of directory
 2006-08-12 22:44:26 +00:00
rtm
cd93074e5b LRU disk cache replacement 2006-08-12 22:34:13 +00:00
kaashoek
22bac2cb9d free inode only when noone is holding a pointer to it. should fix open-unlink- 
read problem, but untested
 2006-08-12 22:03:01 +00:00
rtm
7ce01cf9be mknod set nlink = 1 
usertests for concurrent create/delete, and read() after unlink()
 2006-08-12 16:47:48 +00:00
kaashoek
1f544842ce fstat 
primitive ls
 2006-08-12 04:33:50 +00:00
kaashoek
0633b9715e unlink,mknod,create with multi-component pathnames should work now 
remove console init code from userfs
 2006-08-12 01:25:45 +00:00
kaashoek
24437cd554 fix deadlock---iput(dp) asap 
working unlink, but doesn't free dir blocks that become empty
remove out-of-date comment in ioapic
 2006-08-11 18:18:38 +00:00
rtm
17a856577f init creates console, opens 0/1/2, runs sh 
sh accepts 0-argument commands (like userfs)
reads from console
 2006-08-11 13:55:18 +00:00