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134 commits

Author SHA1 Message Date
Robin Burchell
952382b413 Kernel/Userland: Add a halt syscall, and a shutdown binary to invoke it 2019-06-16 12:25:30 +02:00
Andreas Kling
736092a087 Kernel: Move i386.{cpp,h} => Arch/i386/CPU.{cpp,h} 
There's a ton of work that would need to be done before we could spin up on
another architecture, but let's at least try to separate things out a bit.
 2019-06-07 20:02:01 +02:00
Andreas Kling
bc951ca565 Kernel: Run clang-format on everything. 2019-06-07 11:43:58 +02:00
Andreas Kling
93d3d1ede1 Kernel: Add fchown() syscall. 2019-06-01 20:31:36 +02:00
Robin Burchell
9cd0f6ffac Kernel/LibC: Implement sched_* functionality to set/get process priority 
Right now, we allow anything inside a user to raise or lower any other process's
priority. This feels simple enough to me. Linux disallows raising, but
that's annoying in practice.
 2019-05-30 02:57:15 +02:00
Andreas Kling
9806a23f83 Kernel: Return ENOSYS if an invalid syscall number is requested. 2019-05-23 17:04:26 +02:00
Andreas Kling
ae470ec955 Kernel: Add getpeername() syscall, and fix getsockname() behavior. 
We were copying the raw IPv4 addresses into the wrong part of sockaddr_in,
and we didn't set sa_family or sa_port.
 2019-05-20 20:33:03 +02:00
Andreas Kling
212a263f0a Kernel+LibC: Implement getsockname() syscall. 2019-05-19 19:55:27 +02:00
Andreas Kling
3cba2a8a78 Kernel: Add a beep() syscall that beeps the PC speaker. 
Hook this up in Terminal so that the '\a' character generates a beep.
Finally emit an '\a' character in the shell line editing code when
backspacing at the start of the line.
 2019-05-15 21:40:41 +02:00
Andreas Kling
99aead4857 Kernel: Add a writev() syscall for writing multiple buffers in one go. 
We then use this immediately in the WindowServer/LibGUI communication in
order to send both message + optional "extra data" with a single syscall.
 2019-05-10 03:19:25 +02:00
Andreas Kling
8b249bd09b Kernel+Userland: Implement mknod() syscall and add a /bin/mknod program. 2019-05-03 22:59:58 +02:00
Andreas Kling
25ddcd1022 Kernel: Emit systrace events for exit, thread_exit and sigreturn. 
Since these syscalls don't return to caller, we have to emit the trace
events manually.
 2019-05-02 15:49:48 +02:00
Andreas Kling
d07be1087a Kernel+LibC: Add exit_thread() syscall. 2019-04-29 15:17:20 +02:00
Andreas Kling
5c68929aa1 Kernel: Add a systrace() syscall and implement /bin/strace using it. 
Calling systrace(pid) gives you a file descriptor with a stream of the
syscalls made by a peer process. The process must be owned by the same
UID who calls systrace(). :^)
 2019-04-22 18:44:45 +02:00
Andreas Kling
c02c6fef28 Kernel+ProcessManager: Show per-process syscall counts. 
Added a simple syscall counter to the /proc/all contents. :^)
 2019-04-17 23:16:14 +02:00
Andreas Kling
26a06f3fcd Kernel: More work towards POSIX SHM, also add ftruncate(). 2019-04-09 01:10:00 +02:00
Andreas Kling
99f3cc26c3 Kernel+LibC: Add stubs for POSIX shared memory API. 
Specifically shm_open() and shm_unlink(). This patch just adds stubs.
 2019-04-08 23:44:12 +02:00
Andreas Kling
37ae00a4dd Kernel+Userland: Add the rename() syscall along with a basic /bin/mv. 2019-04-07 23:35:26 +02:00
Andreas Kling
d5a9f4596b Kernel: Add a blunt big process lock. 
We can't have multiple threads in the same process running in the kernel
at the same time, so let's have a per-process lock that threads have to
acquire on syscall entry/exit (and yield while blocked.)
 2019-04-01 20:04:29 +02:00
Andreas Kling
500df578fe LibGUI+Kernel: Add a GLock class (userspace mutex.) 
It's basically a userspace port of the kernel's Lock class.
Added gettid() and donate() syscalls to support the timeslice donation
feature we already enjoyed in the kernel.
 2019-03-25 13:03:49 +01:00
Andreas Kling
e561ab1b0b Kernel+LibC: Add a simple create_thread() syscall. 
It takes two parameters, a function pointer for the entry function,
and a void* argument to be passed to that function on the new thread.
 2019-03-23 22:59:08 +01:00
Andreas Kling
60d25f0f4a Kernel: Introduce threads, and refactor everything in support of it. 
The scheduler now operates on threads, rather than on processes.
Each process has a main thread, and can have any number of additional
threads. The process exits when the main thread exits.

This patch doesn't actually spawn any additional threads, it merely
does all the plumbing needed to make it possible. :^)
 2019-03-23 22:03:17 +01:00
Andreas Kling
d712d353ac Kernel: Remove leftover debug spam when returning from mkdir() syscall. 2019-03-14 14:11:35 +01:00
Andreas Kling
562663df7c Add support for socket send/receive timeouts. 
Only the receive timeout is hooked up yet. You can change the timeout by
calling setsockopt(..., SOL_SOCKET, SO_RCVTIMEO, ...).

Use this mechanism to make /bin/ping report timeouts.
 2019-03-13 13:15:05 +01:00
Andreas Kling
a7d5e9781a Kernel+LibC+Userland: Yet more networking bringup hacking. 
All ICMP sockets now receive all ICMP packets. All this buffering is gonna
need some limits and such.
 2019-03-12 17:27:07 +01:00
Andreas Kling
a017a77442 Kernel+LibC+Userland: Start working on an IPv4 socket backend. 
The first userland networking program will be "ping" :^)
 2019-03-12 15:51:42 +01:00
Andreas Kling
eda0866992 Add a C++ helper class for working with shared buffers. 
This is a bit more comfortable than passing the shared buffer ID manually
everywhere and keeping track of size etc.
 2019-03-08 12:24:05 +01:00
Andreas Kling
251293f2e1 Kernel: Block a signal from being dispatched again until handler returns. 
We don't handle nesting yet, but this is a step in the right direction.
 2019-03-05 10:34:08 +01:00
Andreas Kling
2c5a378ccc Kernel+Userland: Add symlink() syscall and add "-s" flag to /bin/ln. 
It's now possible to create symbolic links! :^)

This exposed an issue in Ext2FS where we'd write uninitialized data past
the end of an inode's content. Fix this by zeroing out the tail end of
the last block in a file.
 2019-03-02 01:52:24 +01:00
Andreas Kling
1b16a29044 Kernel+Userland: Implement fchmod() syscall and use it to improve /bin/cp. 
/bin/cp will now copy the permission bits from source to destination. :^)
 2019-03-01 10:39:19 +01:00
Andreas Kling
1d2529b4a1 Add chown() syscall and a simple /bin/chown program. 2019-02-27 12:32:53 +01:00
Andreas Kling
e421c10735 More compat work towards porting vim. 
It now builds and runs in the small-featureset configuration. :^)
 2019-02-27 00:02:01 +01:00
Andreas Kling
cccc8d8aeb More compat work. 
Move syscall to int 0x82 since using int 0x80 was kinda prone to fork bombs
when building things on Linux. :^)
 2019-02-26 12:57:02 +01:00
Andreas Kling
9624b54703 More moving towards using signed types. 
I'm still feeling this out, but I am starting to like the general idea.
 2019-02-25 22:06:55 +01:00
Andreas Kling
beda478821 Kernel: Make syscalls that take a buffer size use ssize_t instead of size_t. 
Dealing with the unsigned overflow propagation here just seems unreasonably
error prone. Let's limit ourselves to 2GB buffer sizes instead.
 2019-02-25 21:21:12 +01:00
Andreas Kling
6d3e12899b Kernel: Pass process arguments directly on the stack. 
Get rid of the convoluted get_arguments and get_environment syscalls.
This patch also adds a simple /bin/env that just prints its environment.
 2019-02-22 01:55:22 +01:00
Andreas Kling
7d288aafb2 Kernel: Add link() syscall to create hard links. 
This accidentally grew into a little bit of VFS cleanup as well.

Also add a simple /bin/ln implementation to exercise it.
 2019-02-21 13:26:40 +01:00
Andreas Kling
4ea28bf0a5 Kernel: Add a simple shared memory API for two processes only. 
And use this to implement shared bitmaps between WindowServer and clients.
 2019-02-16 12:13:43 +01:00
Andreas Kling
a63e8839da LibC: Add socket(), bind(), listen(), accept() and connect(). 2019-02-14 15:26:06 +01:00
Andreas Kling
f529b845ec WindowServer: Convert entire API to be message-based. 
One big step towards userspace WindowServer. :^)
 2019-02-14 01:21:32 +01:00
Andreas Kling
ef4e9860fd WindowServer: Convert the remaining menu APIs into messages. 2019-02-13 21:47:14 +01:00
Andreas Kling
cf432b4c3d WindowServer: Refactor more of the menu APIs to be message-based. 
This is all pretty verbose but I can whittle it down later. :^)
 2019-02-13 18:49:23 +01:00
Andreas Kling
4f98a35beb WindowServer: Begin refactoring towards a fully asynchronous protocol. 
In order to move the WindowServer to userspace, I have to eliminate its
dependence on system call facilities. The communication channel with each
client needs to be message-based in both directions.
 2019-02-13 17:54:30 +01:00
Andreas Kling
133706d697 Add API's and plumbing for WindowServer clients to make menus. 2019-02-12 00:52:19 +01:00
Andreas Kling
353b191a49 Clean up some uninteresting log spam. 2019-02-06 11:32:23 +01:00
Andreas Kling
dddd0e7b03 Get nyancat nyanning in Serenity. 
I found a cute program that renders an animated nyancat in the terminal.
This patch adds enough hackery to get it working correctly. :^)
 2019-02-03 16:11:28 +01:00
Andreas Kling
ffab6897aa Big, possibly complete sweep of naming changes. 2019-01-31 17:31:23 +01:00
Andreas Kling
c30e2c8d44 Implement basic chmod() syscall and /bin/chmod helper. 
Only raw octal modes are supported right now.
This patch also changes mode_t from 32-bit to 16-bit to match the on-disk
type used by Ext2FS.

I also ran into EPERM being errno=0 which was confusing, so I inserted an
ESUCCESS in its place.
 2019-01-29 04:55:08 +01:00
Andreas Kling
c95228b128 Add support for removing directories. 
It's really only supported in Ext2FS since SynthFS doesn't really want you
mucking around with its files. This is pretty neat though :^)

I ran into some trouble with HashMap while working on this but opted to work
around it and leave that for a separate investigation.
 2019-01-28 04:16:01 +01:00
Andreas Kling
069d21ed7f Make buttons unpress when the cursor leaves the button rect. 
Implement this functionality by adding global cursor tracking.
It's currently only possible for one GWidget per GWindow to track the cursor.
 2019-01-27 08:48:34 +01:00