sanchayanmaity/xv6-cs450
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98 commits

Author SHA1 Message Date
rsc
9e82bfb04c rename 8253pit.c to timer.c 2007-08-28 04:40:58 +00:00
rsc
7834cca604 remove _ from pipe; be like file 2007-08-28 04:22:35 +00:00
rsc
f0d11fea82 Move keyboard code into kbd.c; add backspace handling. 2007-08-28 03:28:13 +00:00
rsc
19b42cc078 Rename main0 to main. 2007-08-27 23:32:16 +00:00
rsc
b63bb0fd00 Clean up lapic code. 
One initialization function now, not three.
Use #defines instead of enums (consistent with other code, but sigh).

Still boots in Bochs in SMP mode.
 2007-08-27 16:57:13 +00:00
rsc
1ccff18b24 fileincref -> filedup (consistent with idup) 2007-08-27 14:35:09 +00:00
rsc
efc12b8e61 Replace yield system call with sleep. 2007-08-27 13:34:35 +00:00
rsc
7bb73cdbc7 nits 2007-08-27 12:48:20 +00:00
rsc
766ba5cc06 first ever correct use of strncpy 2007-08-24 21:00:02 +00:00
rsc
07090dd705 Remove struct uinode. 
Remove type arg to mknod (assume T_DEV).
 2007-08-24 20:54:23 +00:00
rtm
902b13f5d6 simplify ide queuing 
nits in comments
 2007-08-24 19:32:36 +00:00
rsc
649bc99fe4 align, sort 2007-08-23 23:58:19 +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
c65e499f3b help gcc 2007-08-08 10:27:04 +00:00
rsc
9ad44da676 unused 2007-08-08 09:44:23 +00:00
rsc
453c6a65a2 convert syscall dispatch to table 2007-08-08 09:41:21 +00:00
rsc
d80b06a1e0 iincref returns new ref 2007-08-08 09:30:42 +00:00
rsc
7e89fb90bd add safestrcpy 2007-08-08 08:37:22 +00:00
rsc
3689c7f5ce unnecessary struct jmpbuf 2006-09-08 15:31:18 +00:00
rsc
66d46d691d fix file names 2006-09-08 14:40:51 +00:00
rsc
41abfaa92e missing def 2006-09-07 16:54:23 +00:00
rsc
ab17e3198b debugging prints 2006-09-07 15:45:38 +00:00
rsc
19297caf0d fix ide, pit interfaces 2006-09-07 15:29:54 +00:00
rsc
224f6598c1 refactor syscall code 2006-09-07 14:13:26 +00:00
kaashoek
f70172129c run without lapic and ioapic, if they are not present 
if no lapic available, use 8253pit for clock
now xv6 runs both on qemu (uniprocessor) and bochs (uniprocessor and MP)
 2006-09-07 01:37:58 +00:00
rsc
d6b20251f0 fd.c -> file.c 2006-09-06 19:47:07 +00:00
rsc
50e514be98 fd_* => file_* 2006-09-06 18:43:45 +00:00
rsc
39593d2f1a struct fd -> struct file 2006-09-06 18:38:56 +00:00
rsc
2685309fb4 split syscall.c into sysfile.c and sysproc.c 2006-09-06 18:19:11 +00:00
rsc
9e9bcaf143 standardize various * conventions 2006-09-06 17:27:19 +00:00
rsc
03b6376f56 standardize on unnamed args in prototypes 2006-09-06 17:10:00 +00:00
rtm
2aa4c3bc29 complain if no disk 1 
lots of cleanup
 2006-08-30 18:55:06 +00:00
rtm
3b95801add i broke sbrk, fix it 2006-08-29 17:01:40 +00:00
rtm
2b19190c13 clean up stale error checks and panics 
delete unused functions
a few comments
 2006-08-29 14:45:45 +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
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
8b58e81077 i/o redirection in sh 
better parsing of sh commands (copied from jos sh)
cat: read from 1 if no args
sbrk system call, but untested
getpid system call
moved locks in keyboard intr, but why do we get intr w. null characters from keyboard?
 2006-08-23 01:09:24 +00:00
kaashoek
f18ab5c04e compiling, but untested dup 2006-08-20 03:33:01 +00:00
kaashoek
16083d4462 removed block system call 
renumber system calls (run gmake clean!)
skeleton for dup system call
 2006-08-20 03:08:54 +00:00
kaashoek
e958c538fa commented out code for cwd 2006-08-15 15:53:46 +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
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
4357207237 fix getblk to actually lock the block 
no more cons_put system calls
usertests tests two processes writing files
 2006-08-12 11:38:57 +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