Russ Cox
cf4b1ad90b
xv6: formatting, cleanup, rev5 (take 2)
2011-02-19 21:17:55 -05:00
Russ Cox
1a81e38b17
make new code like old code
...
Variable declarations at top of function,
separate from initialization.
Use == 0 instead of ! for checking pointers.
Consistent spacing around {, *, casts.
Declare 0-parameter functions as (void) not ().
Integer valued functions return -1 on failure, 0 on success.
2011-01-11 13:01:13 -05:00
Robert Morris
4655d42e3b
copyout() copies data to a va in a pagetable, for exec() &c
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usertest that passes too many arguments, break exec
2010-09-27 16:14:33 -04:00
Robert Morris
a9183883b8
map kernel instructions r/o
2010-09-20 06:00:22 -04:00
Robert Morris
05d66b0629
my comment is wrong, exec handles BSS fine
2010-09-19 13:47:52 -04:00
Austin Clements
b1d41d6788
Remove the stack guard page. Processes are now contiguous from 0 to proc->sz, which means our syscall argument validation is correct. Add a pointer validation test and remove the stack test, which tested for the guard page.
2010-09-01 16:46:37 -04:00
Austin Clements
b0751a3e9b
Space police
2010-09-01 00:41:25 -04:00
Austin Clements
dd645ef119
Cleanup if allocuvm fails to alloc. Add a test.
2010-08-31 21:49:49 -04:00
Robert Morris
789b508d53
uptime() sys call for benchmarking
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increase PHYSTOP
2010-08-11 14:34:45 -04:00
Robert Morris
83d2db91f7
allow sbrk(-x) to de-allocate user memory
2010-08-10 17:08:41 -04:00
Robert Morris
c4cc10da7e
fix corner cases in exec of ELF
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put an invalid page below the stack
have fork() handle invalid pages
2010-08-06 11:12:18 -04:00
Robert Morris
eb18645f17
fix allocuvm() to handle sbrk() with non-page-granularity argument
...
(maybe this never worked, but it works now)
2010-08-05 12:10:54 -04:00
rsc
34295f461a
group locks into structs they protect.
...
few naming nits.
2009-05-31 05:12:21 +00:00
rsc
d522571068
make slow bigdir last test
2007-09-27 12:29:06 +00:00
rsc
666f58c711
believe it or not, this was working
...
the macro expansion of "char *cp;" turned into
char *(curproc[cpu()]); which declares a dynamically
sized array of char* called curproc.
so then &cp == &(curproc[cpu()]) was actually a
stack variable as "expected". it was one past the
end of the array, but the implicit alloca allocated
more than was necessary.
do not tell me that making cp a #define was a bad idea.
there are worse problems to fix. more on that later.
2007-09-27 05:13:10 +00:00
rsc
56c1a151d2
debugging prints
2007-09-26 23:24:23 +00:00
rsc
e0e7d07e5a
test that fork fails gracefully
2007-08-24 20:20:23 +00:00
rtm
2036534834
add missing iput() at end of _namei()
2007-08-24 14:56:17 +00:00
rtm
b55513796f
oops, O_CREATE doesn't truncate, so holes can't exist, thus no bug
2007-08-24 12:55:15 +00:00
rtm
3d5f21ee1f
test concurrent open/unlink of same file (ok)
...
test files with holes (not ok)
2007-08-24 12:19:13 +00:00
rsc
c88bf235fe
check unlink of non-empty directory
2007-08-22 02:21:22 +00:00
rsc
2d61a40b20
bug in usertests!
2007-08-20 21:00:20 +00:00
rsc
5e03dd86c8
add test for rm .
2007-08-10 17:53:09 +00:00
rsc
dca5b5ca2e
avoid assignments in declarations
2007-08-10 17:17:42 +00:00
rsc
c664dd5d23
missing void
2007-08-08 09:32:39 +00:00
rsc
115e177400
standardize on not using unsigned keyword
2007-08-08 09:30:48 +00:00
rsc
f3c393ba9f
fix tests
2006-09-07 20:06:08 +00:00
rsc
0517a730db
remove bogus test
2006-09-07 15:31:40 +00:00
rsc
6c8acf9e04
check super-long lookups
2006-09-07 15:15:46 +00:00
kaashoek
a64cd81342
one regression test program
2006-09-07 13:23:41 +00:00
rsc
9e9bcaf143
standardize various * conventions
2006-09-06 17:27:19 +00:00
rtm
dfcc5b997c
prune unneeded panics and debug output
2006-08-29 19:06:37 +00:00
rtm
3b95801add
i broke sbrk, fix it
2006-08-29 17:01:40 +00:00
kaashoek
74493bf446
kill user process when it generates an unhandled trap (e.g., 13)
...
fix bug in test code of malloc
2006-08-25 00:43:17 +00:00
kaashoek
81d5219998
bug in sbrk
...
test malloc
2006-08-24 19:24:36 +00:00
kaashoek
8787cd01df
chdir
...
cd in shell
nits in mkdir, ls, etc.
2006-08-19 23:41:34 +00:00
rtm
350e63f7a9
no more proc[] entry per cpu for idle loop
...
each cpu[] has its own gdt and tss
no per-proc gdt or tss, re-write cpu's in scheduler (you win, cliff)
main0() switches to cpu[0].mpstack
2006-08-15 22:18:20 +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
cd93074e5b
LRU disk cache replacement
2006-08-12 22:34:13 +00:00
rtm
14938f9392
buffer cache, fifo replacement
2006-08-12 17:17:35 +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
rtm
4357207237
fix getblk to actually lock the block
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no more cons_put system calls
usertests tests two processes writing files
2006-08-12 11:38:57 +00:00
rtm
8455980b27
exec arguments
2006-07-28 22:33:07 +00:00
rsc
c54c79267f
nitpicks
2006-07-17 01:25:22 +00:00
rsc
9b37d1bfaa
Add user.h for prototypes.
...
Add cons_puts for cleaner output.
2006-07-16 15:36:31 +00:00
rtm
46bbd72f3e
no more recursive locks
...
wakeup1() assumes you hold proc_table_lock
sleep(chan, lock) provides atomic sleep-and-release to wait for condition
ugly code in swtch/scheduler to implement new sleep
fix lots of bugs in pipes, wait, and exit
fix bugs if timer interrupt goes off in schedule()
console locks per line, not per byte
2006-07-15 12:03:57 +00:00
rtm
6eb6f10c56
passes both usertests
...
exit had acquire where I meant release
swtch now checks that you hold no locks
2006-07-12 15:35:33 +00:00
rtm
664324745e
cvs add spinlock.h
...
fix race in schedule()
2006-07-12 09:10:25 +00:00
rtm
4e8f237be8
no more big kernel lock
...
succeeds at usertests.c pipe test
2006-07-12 01:48:35 +00:00
