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
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
rtm
5be0039ce9
interrupts could be recursive since lapic_eoi() called before rti
...
so fast interrupts overflow the kernel stack
fix: cli() before lapic_eoi()
2006-08-10 22:08:14 +00:00
rtm
8a8be1b8c3
low-level keyboard input (not hooked up to /dev yet)
...
fix acquire() to cli() *before* incrementing nlock
make T_SYSCALL a trap gate, not an interrupt gate
sadly, various crashes if you hold down a keyboard key...
2006-08-10 02:07:10 +00:00
kaashoek
28d9ef04dd
printf
...
convert userfs to use printf
bfree
ifree
writei
start on unlink
2006-08-10 01:28:57 +00:00
kaashoek
6fa5ffb56f
devsw
...
checkpoint: write(fd,"hello\n",6) where fd is a console dev almost works
2006-08-09 16:04:04 +00:00
kaashoek
e8d11c2e84
mknod,ialloc,iupdate
2006-08-08 18:07:37 +00:00
kaashoek
104207726b
bwrite
2006-08-07 01:38:46 +00:00
kaashoek
8ec6530fee
generalize async read to support write too
2006-08-06 20:28:15 +00:00
kaashoek
366189214e
nit
2006-08-04 18:23:23 +00:00
kaashoek
c8b29f6d03
better interrupt plan---this one appears to work
...
ioapic
2006-08-04 18:12:31 +00:00
rtm
32630628a9
open()
2006-07-29 09:35:02 +00:00
