Robert Morris
371ab7fa96
inaccessible page under the user stack page, to help exec deal w/ too-large args
2011-09-01 13:25:34 -04:00
Robert Morris
5a23692444
fix usertests to correctly test what happens when you call
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exec() with arguments that don't fit on a single page.
2011-09-01 12:02:49 -04:00
Robert Morris
5e08357827
enterpgdir -> entrypgdir
2011-08-30 20:50:19 -04:00
Robert Morris
327cc21fba
make dirlookup and dirlink more similar
2011-08-19 13:30:57 -04:00
Robert Morris
5053dd6a6d
avoid deadlock by calling begin_trans() before locking any inodes
2011-08-15 12:44:20 -04:00
Robert Morris
2e59046362
log write() data
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usertest for big write()s
push begin_trans/commit_trans down into syscalls
2011-08-12 09:25:39 -04:00
Frans Kaashoek
11b7438b10
Speedup sbrk tst a bit (forking 100Mbyte processes is slow)
2011-08-08 09:20:29 -04:00
Frans Kaashoek
6479766334
Adjust sbrk test for large user address spaces
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All tests pass
2011-08-07 23:03:48 -04:00
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
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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
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(maybe this never worked, but it works now)
2010-08-05 12:10:54 -04:00
rsc
34295f461a
group locks into structs they protect.
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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
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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)
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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)
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fix bug in test code of malloc
2006-08-25 00:43:17 +00:00
kaashoek
81d5219998
bug in sbrk
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test malloc
2006-08-24 19:24:36 +00:00
kaashoek
8787cd01df
chdir
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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
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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
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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
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
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usertests for concurrent create/delete, and read() after unlink()
2006-08-12 16:47:48 +00:00
