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728 Commits

Author SHA1 Message Date
Kevin Lange
720a62d6aa ICANON support (still a bit rough) 
This is a massive hack and I admit it.
 2013-07-27 22:01:08 -07:00
Kevin Lange
40f0c41932 Preliminary termios support 
This is some initial work on support real PTYs.
Canonical mode is not supported at the moment.
 2013-07-27 00:18:29 -07:00
Kevin Lange
6ad55d68d2 (debugging) export files to sdb with a sysfunc 2013-07-22 22:41:14 -07:00
Kevin Lange
ee90317940 bump version for new development line 2013-07-22 20:50:49 -07:00
Kevin Lange
9dbb0f4422 0.5.0-rel tag 2013-07-14 22:38:24 -07:00
Kevin Lange
046d972694 docs 2013-07-11 18:17:26 -07:00
Kevin Lange
147f73b305 Temporarily use a tmpfs for local's home dir 2013-06-28 00:16:56 -07:00
Kevin Lange
4c2801beeb Even more strict ext2fs write disabling 2013-06-12 22:24:02 -07:00
Kevin Lange
1dde9dfcb5 Fix argv storage for init 2013-06-06 18:29:22 -07:00
Kevin Lange
0f344f2900 Rewrite fork/clone. 
This is still a bit ugly, needs cleanup.
Fixes that weird GCC issue.
 2013-06-06 18:04:13 -07:00
Kevin Lange
e70ebf8857 Big fat cleanup and GCC fix batch 2013-06-05 23:10:36 -07:00
Kevin Lange
ff8fd63e62 Fix bad assignment in tmpfs (thx clang) 2013-05-22 16:26:37 -07:00
Kevin Lange
0a064bf3da Remove an unused thing 2013-05-22 01:47:43 -07:00
Kevin Lange
ae08c74115 I'll stop the world and melt with you 
(but I won't stop the world to load binaries)
 2013-05-22 01:34:56 -07:00
Kevin Lange
ad19c5eb01 change comment in randomdev 2013-05-21 15:34:18 -06:00
Kevin Lange
4868960364 Build ALL the things! 2013-05-12 00:38:56 -07:00
Kevin Lange
c8aa5462a8 Cleaner syscall handling 2013-05-08 22:11:02 -07:00
Kevin Lange
1e664bef2b Integrate signals into libc 2013-05-05 15:00:24 -07:00
Kevin Lange
edccf2927b Unbreak ramdisks 2013-04-27 22:04:20 -07:00
Kevin Lange
71bafd0174 Fix kernel heap allocation 2013-04-27 22:04:03 -07:00
Kevin Lange
fde9c6d652 New ioctl commands and userspace improvements 2013-04-27 01:16:36 -07:00
Kevin Lange
5d71eeb013 Kernel stacks are big enough for those... 2013-04-27 01:13:47 -07:00
Kevin Lange
672274d5ae More initial stack space [maybe temporary] 2013-04-26 01:04:21 -07:00
Kevin Lange
fdc442714a Disable EXT2 with a #define 2013-04-25 23:06:51 -07:00
Kevin Lange
0e76870d00 Remove some unused header defines 2013-04-24 20:24:33 -07:00
Kevin Lange
c1ac928af6 Fix mappings so SHM is table aligned 2013-04-24 20:20:34 -07:00
Kevin Lange
16da56ea9b General support for open() flags 
Includes truncation support in tmpfs, and changes the signure of the VFS
open() method. Also tweaked some comment style in the VFS.
 2013-04-24 00:19:08 -07:00
Kevin Lange
8c16a86206 Directory support in tmpfs 2013-04-23 23:21:16 -07:00
Kevin Lange
409052e568 Free that temp block... 2013-04-23 23:05:57 -07:00
Kevin Lange
a2a890e1a8 Fresh new VFS syscalls: unlink, chmod, umask 2013-04-23 01:14:33 -07:00
Kevin Lange
6f096454cd Some additions to the VFS 2013-04-22 22:36:47 -07:00
Kevin Lange
7c8d34d1b6 Disable EXT2 writes; add experimental tmpfs 
This is still a work in progress. ext2 writes are quite broken, so they
have been completely disabled, but there's a new tmpfs mounted to /tmp
that you can try to poke at. I'm still fixing up quirks in the VFS that
make it incompatible with a bunch of stuff, but I did manage to write
some files with vim, and swap files appear to be working at least
somewhat. It's all still broken as fuck.
 2013-04-21 23:17:26 -07:00
Kevin Lange
9901767cbe Retry failed reads 2013-04-21 20:46:48 -07:00
Kevin Lange
ade59a11bc XXX ABI BREAKING CHANGE - New load/heap/stack/shm 
Address for program loading, kernel heap, userspace SHM regions, and
stacks have been changed.

Delete:
  toolchain/build
  toolchain/local
  .userspace_check

Run:
  python userspace/build.py clean
  make clean-disk
  make clean
  ./build.sh
 2013-04-21 17:35:03 -07:00
Kevin Lange
2de26fafe1 Lazy FPU/SSE, more correct-er 2013-04-16 00:03:23 -07:00
Kevin Lange
41030465a8 Save/restore sse (poorly) 2013-04-15 23:23:56 -07:00
Kevin Lange
3871cfcf31 Fix up the serial console so it works again 2013-04-15 01:26:03 -07:00
Kevin Lange
cd677b44c3 Fix up some terminal bits, add F keys 2013-04-13 20:21:40 -07:00
Kevin Lange
bc51b20380 Generic ringbuffer ds for kernel 2013-04-02 23:02:43 -07:00
Kevin Lange
7303be0eee Also verify those aren't null 2013-04-02 18:06:06 -07:00
Kevin Lange
3ddb877b32 [grok.org.uk advisory] validate more syscall pointers 2013-04-02 15:23:40 -07:00
Kevin Lange
7c4cd8dd51 fix nulldev, add zerodev 2013-03-31 13:01:05 -07:00
Kevin Lange
a55a652e0e new fs node device pointer 2013-03-25 21:48:16 -07:00
Kevin Lange
bac4d54bed Revert version to 0.4.99 2013-03-25 21:48:03 -07:00
Kevin Lange
afac5cd955 fix derp in dev FSes, add /dev/random 2013-03-22 22:38:10 -07:00
Kevin Lange
bc2e4741c7 Random bits and pieces 2013-03-22 15:11:19 -07:00
Kevin Lange
674f047bde fix stat for missing file 2013-03-22 12:14:04 -07:00
Kevin Lange
fa79c89e54 Some fixes and cleanup 2013-03-22 11:58:22 -07:00
Kevin Lange
afd0c59de1 Fix warning in syscalls.c 2013-03-21 00:03:05 -07:00
Kevin Lange
ef459bdaad More rough stubs and fixes 2013-03-20 21:24:55 -07:00
Kevin Lange
21aeb34ea4 Rough ioctl with support for winsize 2013-03-18 23:57:40 -07:00
Kevin Lange
6f94ce2296 procfs extensions and ps command 2013-03-18 21:52:45 -07:00
Kevin Lange
ff429a7d07 Fix termios.h in newlib 2013-03-18 13:23:25 -07:00
Kevin Lange
71342f842d procfs, and more pty cleanup 2013-03-18 00:52:12 -07:00
Kevin Lange
e02cf79e2a Rough PTY support (needs work) 2013-03-17 16:34:23 -07:00
Kevin Lange
cef1d359a1 Blocking serial reads 2013-03-17 16:34:01 -07:00
Kevin Lange
e223c57af8 Reserve some entries for process scheduling 2013-03-17 16:33:28 -07:00
Kevin Lange
71931b3cf3 Improvements to lists 2013-03-17 16:32:44 -07:00
Kevin Lange
eb92cccecd Cleanup 2013-03-15 00:52:09 -07:00
Kevin Lange
8dd2686b40 Really hack VFS implementation 2013-03-15 00:20:55 -07:00
Kevin Lange
22f04f137b Relatively compliant uname() implementation 
Also, sleep() as a function (implemented by way of nanosleep) and new
absolute and relative sleep system calls added to newlib.

[ci skip] I damn well know this is going to break CI.
 2013-03-13 21:55:25 -07:00
Kevin Lange
09ec69340c New version tree 2013-03-03 17:11:41 -08:00
Kevin Lange
c4545dcc51 bump version in light of toolchain updates 2013-01-25 21:39:12 -08:00
Kevin Lange
acb362e191 Update copyright in kernel/main.c 2013-01-04 20:42:18 -08:00
Kevin Lange
3b06b5c464 bump version to 0.4.2 2012-12-10 20:38:59 -08:00
Kevin Lange
3a977369af Timed process sleeping (and bug fixes) 2012-12-10 20:28:31 -08:00
Kevin Lange
0e3c9f1241 Fix leap year calculation 2012-12-09 17:08:03 -08:00
Kevin Lange
e83f88bacb Add time support to vfs 2012-12-09 16:59:55 -08:00
Kevin Lange
3cdb7b8748 make most of ext2fs use debug_print 2012-12-09 16:19:25 -08:00
Kevin Lange
a1099c1566 Bump kernel version 2012-12-08 00:25:01 -08:00
Kevin Lange
cd929b1ceb Fix some minor input issues 2012-12-08 00:24:43 -08:00
Kevin Lange
3ca94a0528 fix unsigned/signed compare 2012-12-07 19:29:54 -08:00
Kevin Lange
a5b00112af Add tick counts 2012-12-07 19:06:43 -08:00
Kevin Lange
a9d895a923 unify logging 2012-12-07 18:33:07 -08:00
Kevin Lange
f5b5b8821d Clean up some minor bits and pieces. 2012-12-04 20:09:06 -08:00
Kevin Lange
a201ea07b1 Clean up kernel/devices/kbd 
Remove a bunch of unused macros and variables.
 2012-12-04 15:41:01 -08:00
Kevin Lange
c90bf5cbc9 Remove a bitmask. 
Adds a byte to the process struct, but avoids GCC-specific extensions of
using a single byte for a bitmask. May or may not have any effect
anywhere, but will make ./analyze happier.
 2012-12-04 15:16:53 -08:00
Kevin Lange
ce1a0ed15d bump to 0.4.0 2012-12-03 00:10:31 -08:00
Kevin Lange
6cb9664b69 Fix some VESA woes 2012-12-02 23:28:29 -08:00
Kevin Lange
3b316b0603 add some indication of video driver status 2012-12-02 22:41:40 -08:00
Kevin Lange
3a45200d3d lol wat 2012-12-02 22:16:59 -08:00
Kevin Lange
50ea1462c3 Fix IDE on new qemu, virtualbox 2012-12-02 21:43:54 -08:00
Kevin Lange
c9448437dc Fix long-standing issues in qemu/bochs 
and possibly other environments - fixes the long-standing issue with
keyboard/mouse getting disabled sometimes on bootup, especially if you
tried to interact with the qemu window during the boot process
 2012-11-30 19:32:38 -08:00
Kevin Lange
193158079d Bunch of kernel cleanup 2012-11-30 18:26:47 -08:00
Kevin Lange
ed5b9543fb Big commit: Serial console 
* fix some terminal bugs (some, not all)
* add a serial device to the VFS
* fix up serial so it works better
* add a serial-console application
* fix a bug in some other stuff relating to allocations
* change size of the terminal described by toaru.terminfo
* adds a new system call
 2012-11-28 23:05:19 -08:00
Kevin Lange
6e909acd07 Save/restore FPU state on task switch 2012-10-21 20:17:47 -07:00
Kevin Lange
5fc2a56c05 Meh. 
I'm trying to get PATA access to work on real hardware (and in
VirtualBox, specifically), but it's not working out well. Unless there's
a major breakthrough tomorrow, I'm going to set it aside for a while.
 2012-10-17 22:23:10 -07:00
Kevin Lange
4da4ab63c0 [debug] warn if vid mem can't be located 2012-10-16 23:31:55 -07:00
Kevin Lange
05728b0e2f Fix large files on modern ext2 configurations 2012-10-16 22:30:57 -07:00
Kevin Lange
5e39fe9bfa Fix something I failed to clear out. 2012-10-14 20:27:04 -07:00
Kevin Lange
7d5eb42400 Userspace keyboard handling 
Kernel driver sends raw scancodes, compositor or terminal handle the
rest. Support for F* keys will be added soon, in the mean time userspace
applications can know about the status of modifiers (control, shift,
alt, and super).

Compositor actions have been changed to Alt+Left Click for move and
Alt+Middle Click for resize. I'll work on adding more mouse events once
I get them to be faster (they're annoyingly slow at the moment... I want
more accuracy and less latency).
 2012-10-14 19:53:16 -07:00
Kevin Lange
9d84988778 Bump version number to 0.3.7 
Getting close to the big 0.4.0, but I really want to fix my ATA drivers
and possibly get some CD/ISO stuff in before then.

[ci skip]
 2012-10-13 22:06:51 -07:00
Kevin Lange
217f66e23e Mouse-driven window resizing 2012-10-13 20:19:43 -07:00
Kevin Lange
deaa6ad513 Rough support for environment variables 
- libc functions not implemented yet
- see `env` for an example of reading variables
- see `esh` for an example of how to set and maintain variables for
  sending to other applications

  Both of the above will be the basis for the libc implementation.
 2012-10-07 20:46:35 -07:00
Kevin Lange
77ed41c225 kernel vga term, commas in arguments, ide fixes 2012-10-03 22:03:21 -07:00
Kevin Lange
742a6e7448 Fix up style in system.c, fix some bugs, too 2012-10-03 22:01:45 -07:00
Kevin Lange
2eb953f1f1 Massive fixes to the EXT2 driver. 
* Works with different block sizes
* Works with different inode sizes
* Tested on a real EXT2 file system made with mkfs.ext2

* MBR reading is available
* You can specify a partition with hdd=0 or hdd=1 etc.

* If you make a "real" disk image, you can get GRUB installed in
  its MBR, toss in a suitable config file, and boot right off the
  disk rather than having to use QEMU to boot the kernel or using
  some silly CDROM ramdisk nonsense.
 2012-09-29 00:39:01 -07:00
Kevin Lange
8c20e96fb6 reboot syscall will sync disks 2012-09-29 00:38:45 -07:00
Kevin Lange
f79f345956 Giant ramdisks (works on my desktop) 
But not on my laptop...
 2012-09-18 22:20:04 -07:00
Kevin Lange
9f282a7916 Fix alloc init bug, bump version. 
We'll keep that graphic testing thing in there just in case.
 2012-09-18 01:19:30 -07:00
Kevin Lange
57534cf009 Fix things up to prepare a working ramdisk. 2012-09-18 00:06:32 -07:00
Kevin Lange
a212a93942 Draw some pretty stuff and halt without a disk img 
Don't push this to master!

[ci skip]
 2012-09-17 22:58:49 -07:00
Kevin Lange
777b442a1e Finish rename of bochs driver to lfb driver. 
* Removed some deprecated header stuff.
* Renamed functions / global variables.
 2012-09-17 22:46:43 -07:00
Kevin Lange
5ce042f2d8 Deprecate VESA support. 
This is in favor of bootloader-assisted mode switching. Grub has a
wonderful option we will exploit to set the video mode.

My laptop supports a couple of 32-bit video modes, which is nice,
because I'm not support 24-bit modes.

I'm not sure whether the super-sketchy video memory locator will work
in the real world, but we'll find out sometime soon.
 2012-09-17 22:22:25 -07:00
Kevin Lange
4c67b5da84 Completely rewrote compositing engine 
The compositor itself still needs work, but the compositing engine
within now does full blitting and is faster than the old method.
Transparency is now supported properly, though telling the compositor to
use it on a window will degrade performance. One terminal is usually
okay, and everything runs faster than it did before; two terminals is
pushing it; three will make you very sad. The stacking logic has also
been updated. Presumably, alpha blitting for transparent windows could
be done with SIMD instructions and be extremely fast.

All graphics libraries have also been updated to (hopefully) work
properly with alpha bits.
 2012-09-13 22:12:47 -07:00
Kevin Lange
cea692b577 And now with more login. 
* Also cleaning up some kernel logging options here.
* You can log in as local or root with passwords local and toor
* Graphical sessions are still buggy, so don't kill that terminal.
 2012-09-12 23:19:07 -07:00
Kevin Lange
ba358a51ff Bump kernel version 
* Panel now displays actual kernel version using the uname hack
 2012-09-12 20:08:30 -07:00
Kevin Lange
03181de68b One line fix to a big bug in the ext2 driver 
[ci skip]
 2012-09-11 00:26:39 -07:00
Kevin Lange
af6be648d4 A lot of refactoring 2012-09-07 20:17:00 -07:00
Kevin Lange
5914a09735 Neglected to remove an include... 2012-09-04 20:58:19 -07:00
Kevin Lange
07955c83c6 Fix dozens of build warnings and other oddities. 
* Finally bring syscall.h up to speed and include all syscalls in the
  syscall module of the C library.
* Remove the third-party obfuscated C demos (we have nyancat, good
  enough)
* Fix userspace apps to build without complaining about undeclared
  strtok_r by disable __STRICT_ANSI__
* Fix .eh_frame by including the proper stuff with libgcc.
 2012-09-04 20:27:49 -07:00
Kevin Lange
0cdecac8e0 Disable size overrides in rme 
(Fixes a warning that was caused by a "fix" to a undefined reference to
a missing 64-bit floating-point division function)
 2012-09-04 14:45:09 -07:00
Kevin Lange
8ed06789ed New debug printing facilities. 
- Can now register a userspace file descriptor as the output for kernel
  print statements through kprintf()
- Can set logging levels for debug print messages, which are separate
  from kernel log events and meant to be more readily visible. Log
  events are recorded in a buffer to be viewed later, though nothing
  actually using logging at the moment.
- Serial output is disabled by default now. You can enable it yourself
  by appending the logtoserial argument to the kernel on boot.
 2012-09-03 22:35:11 -07:00
Kevin Lange
bba242dd62 Add a testing framework. 
This is an automated system by which we boot qemu headless and use the
serial line to capture output from a testing application that is started
on bootup, running with the VGA terminal shell. This might be expanded
to boot to the graphical display within VNC and perform more advanced
tests with the Python shim using a VNC module for Python; we'll see.
 2012-09-02 02:24:25 -07:00
Kevin Lange
c7cec92f35 Deprecate ',' in kernel args and fix run-fullscreen 2012-08-15 22:44:20 -07:00
Kevin Lange
444207cbd2 SIGCAT and fix alignment 2012-08-13 14:47:22 -07:00
Kevin Lange
baaa8bc6c8 Stylistic whitespace update to syscall.c 2012-07-06 21:16:19 -07:00
Kevin Lange
989b43ee68 Fix malloc in libc? 2012-06-01 02:02:02 +09:00
Kevin Lange
84ccf49990 Delayed writes [use sysfunc 3 to sync disc] 
Please note that 'reboot' will not call sync yet, so make sure you do it
yourself.
 2012-05-31 20:52:47 +09:00
Kevin Lange
0242e8aa11 [hopefully] Fix the EXT2 write support 2012-05-31 20:37:38 +09:00
Kevin Lange
5457de3906 System Debugging Functions syscall 2012-05-16 20:51:37 -04:00
Kevin Lange
5a1a45bc09 Faster mouse response 
- Discard lots of packets
- Don't yield?
 2012-04-12 23:21:38 -05:00
Kevin Lange
915ebc1dac Increment version to 0.2.1 2012-04-11 00:16:24 -05:00
Kevin Lange
85b958b2cd This is what happens when we don't maintain legacy stuff. 2012-04-10 23:49:22 -05:00
Kevin Lange
ac7720f396 Reenable support for a VGA text-mode terminal. 2012-04-10 23:35:12 -05:00
Kevin Lange
8096d89c16 [temp] Stop freeing file nodes (XXX) 2012-04-03 13:17:26 -05:00
Kevin Lange
35eb731ccb Bump version to 0.2.0, change branch to -dev 2012-03-27 21:52:38 -05:00
Kevin Lange
f68ca25622 Boot-to-shell through kernel argument 'single' 2012-03-27 21:47:25 -05:00
Kevin Lange
958262e69d Fix argv[0] bug 2012-03-27 21:36:39 -05:00
Kevin Lange
0ce4e02cba Actually release directories again so we don't run out of RAM 2012-03-27 19:38:04 -05:00
Kevin Lange
639881f931 Make things faster, better, stronger, etc. 2012-03-27 19:09:11 -05:00
Kevin Lange
9fd73be686 Trying a few fixes... We're still doing some things very, very wrong. 2012-03-27 16:52:46 -05:00
Kevin Lange
fb6e5d59e3 Completely rewrite rendering model for compositor. 
We know longer accept DAMAGE and REDRAW commands. Instead, we just loop
and redraw everything anyway (efficiently, mind you). Pipes still have
issues when closed and various other different things.
 2012-03-27 13:58:21 -05:00
Kevin Lange
29e031e6f6 [docs] Clean up some fixed XXXs and TODOs 2012-03-15 13:15:57 -05:00
Kevin Lange
816ddc8f3e Lots of process cleanup implemented; improved cursor rendering 2012-03-14 22:03:55 -05:00
Kevin Lange
ffbe7b7b38 A bunch of stuff. 2012-03-14 15:04:12 -05:00
Kevin Lange
03ee7ed9a9 Fix a kernel elf loader bug that was breaking getopt() 2012-03-13 17:43:35 -05:00
Kevin Lange
2791e7fd35 We've been doing some really stupid shit here... 2012-03-10 18:20:34 -06:00
Kevin Lange
66ba18fc33 Ug. 2012-03-10 15:03:59 -06:00
Kevin Lange
aa6e7ca62b Actually, I'm just a complete moron, lolz 2012-03-10 13:36:16 -06:00
Kevin Lange
cf6437c477 We were also leaking on sigkills 2012-03-10 13:34:15 -06:00
Kevin Lange
4b132c195b Thar's the problem. 2012-03-10 12:47:33 -06:00
Kevin Lange
e586a9361d No, I was an idiot. 2012-03-10 12:42:23 -06:00
Kevin Lange
1c288e1c8b We never freed nodes from the scheduler queue :( 2012-03-10 12:39:35 -06:00
Kevin Lange
1b2d0e2c75 Bump version number to 0.1.0 for EOH 2012-03-07 19:35:30 -06:00
Kevin Lange
8fb8edba3a I have no idea idea what I'm doing. 2012-03-01 21:13:52 -06:00
Kevin Lange
2b0d6f6759 Some very simplistic window management 2012-02-25 23:52:09 -06:00
Kevin Lange
db8a75071d We have a terminal. In a window. Seriously. 2012-02-23 00:36:49 -06:00
Kevin Lange
2da22312a5 Merge branch 'master' of github.com:klange/osdev 2012-02-20 23:32:10 -06:00
Kevin Lange
de7a984938 Fix a bunch of bugs in signal handling and scheduling 2012-02-20 23:31:00 -06:00
Kevin Lange
e335a2970a [glogin] Working on the graphical login application 2012-02-19 21:29:40 -06:00
Kevin Lange
e1beca4127 CPU detection moved to userspace app 2012-02-19 19:39:18 -06:00
Kevin Lange
e5ed5cdca0 Disable line buffering in pipes. Totally not our job. 2012-02-17 15:01:09 -06:00
Kevin Lange
7c41cd7080 Fix compile warnings 2012-02-17 01:27:56 -06:00
Kevin Lange
220e9cbc57 Hopefully fix some latent signal bugs 2012-02-17 01:21:11 -06:00
Kevin Lange
678ed81c65 Extensive stability fixes. I think I finally squashed those stack bugs. 2012-02-16 22:43:41 -06:00
Kevin Lange
531d70f933 Ugly fix to bootup stack fault bug 2012-02-16 15:51:26 -06:00
Kevin Lange
8fb69d44cd I have no frickin' clue what's causing these startup crashes. Requires further investigation. 2012-02-16 15:09:56 -06:00
Kevin Lange
a1d821de9b Various fixes 2012-02-16 14:38:50 -06:00
Kevin Lange
a72f9bc7cf Fix stack bug. 2012-02-16 14:31:40 -06:00
Markus Schober
6dc90b1ac2 shm_obtain takes a (size_t *) and modifies the value based on the true 
size of the block returned.
 2012-02-16 03:34:42 -06:00
Kevin Lange
c67d2796ef Finish threading (might still be some bugs) 2012-02-16 01:06:44 -06:00
Markus Schober
4453aba2de can haz threads? 2012-02-15 22:56:16 -06:00
Kevin Lange
cffbb02240 Stuff and things 2012-02-15 20:50:31 -06:00
Kevin Lange
de0bbe739b Fix a bunch of system calls... 2012-02-12 18:47:01 -06:00
Kevin Lange
9b1e227c0f Fix a dozen different things. 2012-02-12 16:45:23 -06:00
Kevin Lange
cc7354d298 Fix bad process switch handling on empty queues 2012-02-11 18:27:28 -06:00
Kevin Lange
89c7ef9620 Add signal header... 2012-02-11 18:02:22 -06:00
Markus Schober
45903b204b fixed a subtle bug in shm; added a bunch of utilities to test it 2012-02-10 22:31:38 -06:00
Kevin Lange
58c176dfa0 Syscalls to share file descriptors over a shared memory region 2012-02-08 20:59:34 -06:00
Kevin Lange
180342822a Merge branch 'master' of github.com:klange/osdev 2012-02-08 20:09:33 -06:00
Kevin Lange
79fcaf5136 Stability fixes. 2012-02-08 20:09:28 -06:00
Markus Schober
27d0deed5b [shm] fork() and execve() don't wreak havoc on shm 2012-02-08 19:59:34 -06:00
Kevin Lange
aa73f6fc6e Fix a task 0 exit bug 2012-02-08 19:30:35 -06:00
Kevin Lange
ea961ea0e3 Fix compilation warnings 2012-02-08 16:07:54 -06:00
Kevin Lange
65fa12f482 SIGNALS 2012-02-08 02:40:44 -06:00
Markus Schober
aec24c08f1 Attaching nearly works! 2012-02-07 02:29:28 -06:00
Kevin Lange
a190f9995c shm negotiate comments 2012-02-06 15:37:40 -06:00
Kevin Lange
fdaf53b0c4 [shm] Working on negotiation functions 2012-02-05 19:56:21 -06:00
Kevin Lange
1a5057e1fa [minor] typo 2012-02-05 18:14:29 -06:00
Kevin Lange
aba36f4dce Reserving syscall numbers for shared memory 2012-02-05 18:12:50 -06:00
Kevin Lange
c4e33117c0 mkdir and creat testing 2012-02-05 16:04:41 -06:00
Kevin Lange
6590b285b5 Mouse improvements (stability, scaling) 2012-02-04 22:29:46 -06:00
Kevin Lange
3bade472f2 Change comment regarding version names 2012-02-03 22:41:55 -06:00
Kevin Lange
2e8144493d Bootsplash testing (launches terminal afterwards) 2012-02-03 18:16:47 -06:00
Kevin Lange
78e96435ad [util] Script to run fullscreen 2012-02-03 12:23:49 -06:00
Kevin Lange
aac1d78e35 Drop packets from the mouse if the client isn't reading fast enough 2012-02-02 20:37:50 -06:00
Kevin Lange
4366a20a8f Pipe and packet-based mouse device 2012-02-02 16:16:29 -06:00
Kevin Lange
6f773cf407 Fix a cast warning 2012-01-31 20:12:19 -06:00
Kevin Lange
89d9265c73 Actually deschedule processes when they are waiting 2012-01-31 19:27:38 -06:00
Kevin Lange
71298a5c83 Relatively broken local echo support 2012-01-31 00:16:09 -06:00
Kevin Lange
a8cc561cce Try to write good documentation for the vfs module 2012-01-30 16:48:54 -06:00
Kevin Lange
238278c3fc init, get/sethostname 2012-01-30 12:10:53 -06:00
Kevin Lange
047f209357 Style guide. 2012-01-29 12:46:34 -06:00
Kevin Lange
c9d5e735ed Getting ready for thread support 2012-01-28 17:06:07 -06:00
Kevin Lange
a47fe02224 Directory switching 2012-01-27 13:10:58 -06:00
Markus Schober
405868ac8a First commit of readdir/ls support. 2012-01-27 04:04:04 -06:00
Kevin Lange
9061f91e74 stat(), fstat(), /bin/stat 2012-01-27 03:12:29 -06:00
Kevin Lange
71f5a8e3e4 New MOTD, bump version number (0.0.2-testing uiharu) 2012-01-27 00:25:28 -06:00
Kevin Lange
d112f6fedb Reboot [and fix user/group permissions in fork()] 2012-01-26 23:11:43 -06:00
Kevin Lange
ac8354d805 Add some system calls, plus a fakish /bin/login 2012-01-26 22:46:18 -06:00
Tianyi Wang
35ce150bb0 Fixes where the block number of inode is incorrectly changed. 2012-01-25 23:30:41 -06:00
Kevin Lange
c7afd7b941 HACF should return non-zero. 2012-01-25 20:08:22 -06:00
Tianyi Wang
cbb739e14b [fix merge conflict] 2012-01-25 19:30:45 -06:00
Tianyi Wang
023865913c fs stuffs 2012-01-25 19:25:59 -06:00
Kevin Lange
d73d2e2361 [cmos] Fix userspace clock 2012-01-25 13:50:30 -06:00
Kevin Lange
1a2cb28fc1 [pipe] Fix write overrun and other issues 2012-01-25 00:54:59 -06:00
Kevin Lange
339b82e10c [massive commit] Userspace terminal. 
Completely removes:
* The kernel terminal (both VGA and graphical)
* The kernel ANSI parser (obviously)
* kgets() function
* Dozens of other functions that were made useless

Adds:
* Userspace terminal that should work (relatively) well
* Keyboard device driver (implemented with a "pipe" object)
* Stabalized interrupt interface
* `clear` uses the c library
* All panic screens and kprintf() output goes to the serial line ONLY
* The kernel boots directly into /bin/terminal (no arguments, unless you
  want to add them (such as -f))
 2012-01-25 00:19:52 -06:00
Kevin Lange
d9c0c8efb6 Pipes, dup2, and an almost-kinda-working terminal 2012-01-24 19:06:07 -06:00
Kevin Lange
6c042aba53 Pipes 2012-01-24 18:40:25 -06:00
Kevin Lange
9147549bd5 oops 2012-01-24 17:58:19 -06:00
Kevin Lange
9ba44c73bc [pipe] Pipe (ring buffer) device? 2012-01-24 17:56:35 -06:00
Kevin Lange
e05515844d Null device 2012-01-23 23:01:23 -06:00
Kevin Lange
0b6cc503af [isrs] Increment the IRQ semaphore before... 
... handling any interrupt service routines.

This was causing crashes while running /userspace/ apps without any
syscalls being triggered, presumably due to switching at awkward times.
 2012-01-23 19:04:10 -06:00
Kevin Lange
ed31c2cbea Drop serial output from standard terminal 2012-01-23 12:36:59 -06:00
Kevin Lange
e3dc6b002d [bochs] (still broken) fix fb detection for qemu 1.0 2012-01-19 17:44:50 -06:00
Kevin Lange
e5330b1df0 Started work on the full ELF loader and C++ support 2012-01-18 20:12:04 -06:00
Kevin Lange
0440b775d8 [typo] 2012-01-18 20:08:43 -06:00
Kevin Lange
4a22517298 Fix some minor ANSI support things 2012-01-10 23:22:12 -06:00
Kevin Lange
5fa42a5d34 Fix a kgets() thread-switcing bug 2012-01-10 20:14:07 -06:00
Kevin Lange
6b2ee875d4 Interrupts on/off is a semaphore 2012-01-10 19:54:05 -06:00
Kevin Lange
aa748bc99a Hmpf. 2012-01-10 19:14:30 -06:00
Kevin Lange
ef5f2ebd1a Fix minor tab completion bug 2012-01-10 18:42:46 -06:00
Kevin Lange
edebb12573 [misc] Boot logging to screen 2011-12-26 19:23:58 -06:00
Kevin Lange
3023d58a7f [video] Really need to fix this 24-bit-color stuff... 2011-12-25 22:37:13 -06:00
Kevin Lange
c440ab6477 [misc] Fix some general boot issues with some Grubs 2011-12-25 18:18:41 -06:00
Kevin Lange
c0f45e0b7f VESA mode switching support. 
BIOS execution is provided through the `v8086` module, which provides
software emulation of an 8086 processor. It is not currently working
with some BIOSes and may (read: probably will be) replaced with another
emulator (x86emu comes to mind) at some point in the near future. In the
meantime, the default video mode for QEMU works with this and it's
enough to get us on real VESA instead of fake VBE. The `bochs` module
will be renamed in a future commit. Userspace programs have been
adjusted to work at bitrates other than 32 *POORLY*. If you write pixels
left-to-right, they should work fine. They only work with 24-bpp
otherwise, and then you need to be careful of what pixels you are
writing when, or you will overwrite things in other pixels.

You may pass a commandline argument like the following to set display
modes:

  vid=vesa,1024,768

Or for stranger modes under QEMU or Bochs, use the bochs VBE
initializer:

  vid=bochs,1280,720

Note that the address of the linear framebuffer is still found via
hackish probing instead of PCI or trusting the VBE information, so if
you have things in the wrong memory ranges (0xE0000000+), be prepared to
have them get read.

Once again, this entire commit is a massive hack. I am happy that it
worked, and I will continue to make it less hacky, but in the meantime,
this is what we've got.

Happy holidays.
 2011-12-25 00:40:40 -06:00
Kevin Lange
fb8f35719d [vid] Prepare for VESA implementation. 2011-12-16 14:00:48 -06:00
Kevin Lange
bf1011e2ba [vid] Support setting video resolution from kernel args 2011-12-16 13:39:34 -06:00
Kevin Lange
a4d17cb382 Graphics resolution independence (targetting VESA support); update README 2011-12-16 13:16:20 -06:00
Kevin Lange
b2606ff706 [version] Kernel version and codename, shell uname cmd 2011-12-16 02:15:44 -06:00
Kevin Lange
26b3079578 [main] Also include lower memory in available pages 2011-12-15 23:00:43 -06:00
Kevin Lange
fac669e4c3 [mem] Add facilities to track memory usage (naïvely) 2011-12-15 21:47:46 -06:00
Kevin Lange
e844fe53ad [list] Fix merge bug 2011-12-15 21:13:47 -06:00
Kevin Lange
ddc71135af [proc] Fix some latent management bugs 2011-12-15 21:08:48 -06:00
Kevin Lange
324cba6f57 [printf] Add one more little catch, just in case... 2011-12-15 17:46:57 -06:00
Kevin Lange
021585e9ef [misc] Massive improvements to process handling 
- Free process resources when a process exits (reaped in next process
  cycle; should probably reap after a wait() or something)
- Free process struct after wait()
- Fix page allocation
- Fix fork() return value for child process (attempted to write to an
  invalid point in kernel-stack memory)

We shouldn't be triple faulting randomly anymore!

Continue investigating the fork() return value, as there was a bugged
return at some point during executon of a test run of thrash-process.
 2011-12-15 17:21:28 -06:00
Kevin Lange
37c3ab67ce [sys] Fix fork syscall return values 2011-12-15 15:31:18 -06:00
Kevin Lange
dae4083454 [panic] Updated panic messages 2011-12-15 01:46:22 -06:00
Kevin Lange
67343548a7 Only mount hard disk if requested 2011-12-14 22:30:46 -06:00
Kevin Lange
8c548c0db0 Restructure directory tree for kernel modules 2011-12-14 22:15:47 -06:00
Kevin Lange
5d0f3f0f3d [text/io] Better text output management 
- Fixes a number of bugs with VGA text-mode (including crashes and
  colors)
- Makes it far easier to include more console drivers in the kernel,
  though this will be terribly redundant in the future.
- Actually check for video graphics modes before attempting to draw the
  mouse cursor.
 2011-12-14 21:50:34 -06:00
Kevin Lange
258e2bfbfe [log] More logging, make output of dmesg prettier 2011-12-14 19:43:14 -06:00
Kevin Lange
6d27ef0ffe [log] vsprintf, fix va logging 2011-12-14 19:19:51 -06:00
Kevin Lange
3b6512a6ae [log] Fix logging, and log some init functions 2011-12-14 19:06:11 -06:00
Kevin Lange
748a8e8d28 [log] Simple logging facility 2011-12-14 17:47:30 -06:00
Kevin Lange
cbc60a89cf [proc] Documentation, in my code? 2011-12-14 02:37:43 -06:00
Kevin Lange
9834979e38 [task] Comments 2011-12-14 02:29:23 -06:00
Kevin Lange
4373e904ac [misc] Actually enter user mode properly so our TSS gets used 2011-12-13 16:06:45 -06:00
Kevin Lange
2fdf993af7 [ide] Minor updates 2011-12-13 00:48:04 -06:00
Kevin Lange
61bdd8f11d [misc] Various, meaningless edits 2011-12-12 02:17:14 -06:00
Kevin Lange
16989b65b0 [locks] Locks 2011-12-10 19:15:12 -06:00
Kevin Lange
145c4274d5 [misc] Also the include files... 2011-12-10 17:45:04 -06:00
Kevin Lange
3670757dc9 [misc] Make those all uniform, remove redundant ones 2011-12-10 17:42:41 -06:00
Kevin Lange
385fdae86c [misc] Add vim hints to the top of all modules 2011-12-10 17:34:10 -06:00
Kevin Lange
15c01ce442 [misc] Fix working directory handling 2011-12-08 15:37:11 -06:00
Kevin Lange
2a1b0d3dcf [process] Massive commit: New process model 2011-12-08 15:25:48 -06:00
Kevin Lange
3f513579e1 initial work on new process model 2011-12-07 20:59:08 -06:00
Kevin Lange
9f165800b7 [tree] Add some new functions 2011-12-07 20:58:47 -06:00
Kevin Lange
3d916ea911 [kbd/mouse] Clean up 2011-12-07 20:58:25 -06:00
Kevin Lange
c4fe97af6d [kbd] Cleanup 2011-12-07 15:01:31 -06:00
Kevin Lange
04a5f4a833 [sys] Pass on values for failed executions 2011-12-06 20:36:25 -06:00
Kevin Lange
dca46fffc4 [sys] wait(pid) 2011-12-06 20:13:20 -06:00
Kevin Lange
8d0ebc5042 Fix forking? 2011-12-06 19:46:22 -06:00
Kevin Lange
fb2759e01a [mem] Add some new page fault special things 2011-12-06 19:43:45 -06:00
Kevin Lange
abcbefece3 [ext2] *Should* be a working inode writer 2011-12-06 18:04:42 -06:00
Kevin Lange
cf6b4081b2 [ext2] remove STOP from inode allocator 2011-12-05 00:27:25 -06:00
Kevin Lange
a9555e28ce [ext2] Bitmap allocation, we can (almost) allocate inodes 2011-12-05 00:21:56 -06:00
Kevin Lange
a9661400e2 [fs] Use the path canonicalization function for opening and cd'ing 2011-11-29 20:19:30 -06:00
Kevin Lange
7ecd1bd440 [shell] Various testing functions 2011-11-29 13:33:25 -06:00
Kevin Lange
80db0f331d [vfs] Proper path canonicalization available 2011-11-29 13:28:36 -06:00
Kevin Lange
05860ee7c7 [list] Fix remove and pop 2011-11-29 13:07:59 -06:00
Kevin Lange
30326e5dd3 [ext2] Fix bad allocations for block objects 2011-11-29 13:06:41 -06:00
Kevin Lange
dd6aaf1a9d [main] Fix vim hints 2011-11-29 13:06:17 -06:00
Kevin Lange
1f1009106a [tree] Some comments couldn't hurt 2011-11-29 07:10:35 -06:00
Kevin Lange
8f07b1a417 [mem/task] Fix broken handling of page faults 
The method I was using resulted in a loop of halts attempting
to remove process 0 from the thread queue if the kernel itself
was doing the faulting. This should fix that. Once there are
no more processes available, we bail out and call STOP.
 2011-11-29 07:02:05 -06:00
Kevin Lange
9bd14b5a24 [tree] Fix branch removal 2011-11-29 07:01:36 -06:00
Kevin Lange
63ae277053 [tree/list] Some additional functions 2011-11-29 06:52:26 -06:00
Kevin Lange
47a6832606 [tree] Simple tree implementation for processes 2011-11-29 02:49:19 -06:00
Kevin Lange
f5d1d411cf [list] Lists only got bigger... 2011-11-29 01:55:11 -06:00
Kevin Lange
05b59d366f [list] Fix some bugs in that. It never works on the first push anyway, right? 2011-11-28 23:45:33 -06:00
Kevin Lange
ea7ddfe61d [list] Simple doubly-linked list implementation 2011-11-28 23:28:55 -06:00
Kevin Lange
bb606f948d [shell] Line editing. 2011-11-26 17:18:35 -06:00
Kevin Lange
010475b6ee [bochs] Add a function to force a redraw of the cursor 2011-11-26 17:18:20 -06:00
Kevin Lange
94fe43a45e [vfs] Fix an allocation bug 2011-11-26 17:18:00 -06:00
Kevin Lange
1b1cad3f4a [shell] Scroll through history 2011-11-26 16:14:35 -06:00
Kevin Lange
0be609c334 [shell] Simple command history 2011-11-26 15:52:24 -06:00
Kevin Lange
d8c15cb0b1 [shell] Fix tab completion, I was an idiot 2011-11-26 15:26:12 -06:00
Kevin Lange
75329eed95 [misc] strstr, startswith 2011-11-26 15:25:59 -06:00
Kevin Lange
062e6fcd43 [shell] Tab completion, basic work on writing files 2011-11-24 18:59:23 -06:00
Kevin Lange
149225e097 [fs] Code cleanup 2011-11-24 12:33:20 -06:00
Kevin Lange
2efc98d5a6 [fs] Unify all read calls, add a write_block function 2011-11-24 12:28:21 -06:00
Kevin Lange
b8b48cfc65 [fs] Print some debug information on mount 2011-11-23 22:27:18 -06:00
Kevin Lange
450a8784e2 [misc] Prepare for the inevitable support for file writes 2011-11-23 21:38:51 -06:00
Kevin Lange
65e6b0e800 [shell] Redraw prompt on ^L 2011-11-23 21:22:25 -06:00
Kevin Lange
63f57855bf [shell] Complete rewrite (sort of) 2011-11-23 21:18:48 -06:00
Kevin Lange
d8e7198473 [shell] Highlight executables in green. Add info command. 2011-11-23 13:45:08 -06:00
Kevin Lange
8aee786497 [sys] This seems to help fork() a small bit 2011-11-18 22:14:00 -06:00
Kevin Lange
4052a8f63a [ext2/disk] Increase cache size 
Also move cache entries to a malloc'd block so we allocate them
dynamically after mounting.
 2011-11-18 22:13:10 -06:00
Kevin Lange
26a717db14 [bochs] Change output for wallpaper loading 2011-11-18 15:16:04 -06:00