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1608 Commits

Author SHA1 Message Date
Bananymous f73bb242f3 Kernel: Save fpu state and flags in signal handler 
This was causing some weird crashes :D
 2025-06-28 16:55:13 +03:00
Bananymous 9e895e5286 Kernel: Use fxsave64 and fxrstor64 on 64 bit target 2025-06-28 16:55:13 +03:00
Bananymous 5b0e5512a8 Kernel: Don't block in send until full message is sent 
Only block until some data was sent. This allows select + send to be
actually non blocking if used correctly.

Also fixes a bug with non blocking sockets that could not send the full
message is one try.
 2025-06-28 16:55:13 +03:00
Bananymous 05a727979a Kernel: Make sse initialization thread safe 2025-06-28 16:55:13 +03:00
Bananymous fe62ce4bae Kernel: Fix spurious wakeup from SYS_SLEEP 2025-06-28 16:55:13 +03:00
Bananymous 4695fa061d Kernel: Don't panic if UNIX socket is already bound but deleted 2025-06-28 16:55:13 +03:00
Bananymous 83c0ef3514 Kernel: Implement CLOCK_{PROCESS,THREAD}_CPUTIME_ID 2025-06-28 16:55:13 +03:00
Bananymous 93e5d09a63 Kernel/LibC: Implement flock 2025-06-28 16:55:13 +03:00
Bananymous 6d3d41abe2 Kernel: Fix possible division by zero in scheduler 2025-06-28 16:55:13 +03:00
Bananymous 3283359ac8 Kernel: Cleanup ANSI DSR 2025-06-19 19:05:49 +03:00
Bananymous fff16f6b8c Kernel: don't directly access user memory in mmap 2025-06-19 19:04:20 +03:00
Bananymous a347ceba74 Kernel: Cleanup sys_wait sleep/signal handling 2025-06-19 19:03:42 +03:00
Bananymous 05836fab4c Kernel: Allow accessing fd's inode without having read/search access 
I have no idea what the point of this was. VFS is already verifying
read and search access
 2025-06-19 19:02:28 +03:00
Bananymous 32c35a822b BuildSystem: binutils1.39->1.44, gcc12.2.0->15.1.0 2025-06-19 19:00:50 +03:00
Bananymous 9c86e5e54d Kernel: Add ANSI SGR 39 and 49 
Also debug log unimplemented ANSI SRGs, this makes finding missing
commonly used ANSI SGR codes more easy
 2025-06-18 20:34:55 +03:00
Bananymous 125f8b591d Kernel: Don't crash if socket tries to reconnect 
:D
 2025-06-11 01:54:41 +03:00
Bananymous e92f039a17 Kernel: Fix tcp sending with already sent unacknowledged bytes 2025-06-06 11:55:44 +03:00
Bananymous ef76ffa1c1 Kernel: Remove unnecessary hack 
This is no longer needed as thread unlocks its spinlock before calling
Process::exit() on terminating signal
 2025-06-06 11:13:55 +03:00
Bananymous 652eb2346c Kernel: Fix syscall interrupt disabling 
If thread had a terminating signal, syscall leaving would try to lock
process's mutex while not having interrupts enabled
 2025-06-06 11:12:48 +03:00
Bananymous 66726090ec Kenrel: Fix TCP connection closing 
If TCP socket was connected with connect() instead of accept() it would
never send FIN to other end when it was closed.
 2025-06-06 11:10:29 +03:00
Bananymous b668173cba Kernel: Fix pseudo terminal writability 2025-06-06 11:09:50 +03:00
Bananymous c6ded82406 Kernel: Fix a deadlock when thread is executing terminating signal 2025-06-06 06:52:27 +03:00
Bananymous a76c6faffc Kernel: Fix a deadlock when process is exiting 2025-06-06 06:52:02 +03:00
Bananymous 81ff71a97f Kernel: Track the number of recursive spinlocks a thread is holding 2025-06-06 06:51:15 +03:00
Bananymous 56db0efe58 Kernel: Add missing file for race condition fixes :) 2025-06-06 04:03:37 +03:00
Bananymous 5eefd98e1b Kernel: Add debugging macro to dump syscalls that take a long time 2025-06-06 04:00:57 +03:00
Bananymous eecdad50a6 Kernel: Fix most of mutex + block race conditions 
All block functions now take an optional mutex parameter that is
atomically unlocked instead of having the user unlock it before hand.
This prevents a ton of race conditions everywhere in the code!
 2025-06-06 03:59:22 +03:00
Bananymous 96d5ed9cc7 Kernel: Fix E1000 driver interrupts 
I have no idea why, but E1000 seems to be missing interrupts frequently
when clearing ICR only at the end of the interrupt handler
 2025-06-06 03:45:35 +03:00
Bananymous 73090ecb37 Kernel: TTY set EPOLLOUT 2025-06-05 22:04:51 +03:00
Bananymous 8812704601 Kernel: Make sure IPv4 and ARP packets are not missed 
This is a really hacky solution but will do until i get atomic
unblocking with respect to locks
 2025-06-05 22:03:15 +03:00
Bananymous 0f189d410e Kernel: Fix unix socket recv from 
If connection on unix socket was closed and other end tries to recvfrom,
the thread would enter a fucked up state where it held the socket's
spinlock when returning to userspace.
 2025-06-05 22:02:53 +03:00
Bananymous cfeabc4580 Kernel/Terminal: Fix ANSI SGR 8 bit color parsing 2025-06-05 20:43:57 +03:00
Bananymous f79db874bf Kernel: Fix ANSI CSI 1J 
I was accidentally clearing the whole screen when I needed to clear from
cursor to the end of the screen
 2025-06-05 02:38:57 +03:00
Bananymous 8de19aff3c Kernel/Terminal: Fix 24 bit ANSI SGR color parsing 2025-06-05 02:38:07 +03:00
Bananymous bf41b448d6 Kernel: Fix TCP sending 
- Fix race condition when adding packet to send buffer before other end
  has acknowledged it
- Allow sending multiple packets before receiving ACK for previous ones
 2025-06-04 22:21:35 +03:00
Bananymous 448632cf11 Kernel: Add fast path to pselect and ppoll 
If events are available right away, don't create epoll object to wait
on. Also fix pselect return value to the number of bits set. Previously
return value could've been greater than that if epoll return EPOLLERR or
EPOLLHUP for events that were not listened to
 2025-06-04 17:51:22 +03:00
Bananymous 943069b2a3 Kernel: Socket EPIPE and send SIGPIPE on write after hang up 2025-06-03 10:24:44 +03:00
Bananymous e305698e6b Kernel: Fix epoll EPOLLHUP and EPOLLERR reporting 2025-06-03 10:23:53 +03:00
Bananymous 4c0b7d44b4 Kernel: Enable ECHOE and ECHOK, support VKILL, fix VEOF 2025-06-02 16:26:53 +03:00
Bananymous fb466b5af7 Kernel: use termios c_cc values instead of hardcoded characters 2025-06-02 15:54:11 +03:00
Bananymous 7a645b8555 Kernel: Add SMP message StackTrace 
This event is sent when user presses ctrl+{F1-F12} and it will dump the
corresponding processor's stack trace. This is really helpful for
detecting deadlocks in the system
 2025-06-02 11:39:18 +03:00
Bananymous c5b0d0235f Kenrel: Allow Processor::send_smp_message to send event to current CPU 2025-06-02 11:39:18 +03:00
Bananymous e109b5cff6 Kernel: Remove unnecessary locks from Pipe 
Inode already locks its own mutex when read/write is called there is no
need to explicitly lock them in read_impl/write_impl
 2025-06-02 11:39:18 +03:00
Bananymous 9883fb7bf6 Kernel: Rewrite epoll notifying system 
This removes the need to lock epoll's mutex when notifying epoll. This
prevents a ton of deadlocks when epoll is notified from an interrupt
handler or otherwise with interrupts disabled
 2025-06-02 11:39:18 +03:00
Bananymous b2e3aefa72 Kernel: Don't crash when terminating process with signal 2025-06-01 16:59:02 +03:00
Bananymous 31bcad2535 LibC: Implement truncate 2025-06-01 13:48:03 +03:00
Bananymous b75970958e Kernel/LibC: Implement unlinkat 2025-06-01 13:48:03 +03:00
Bananymous 91756c057e LibC: Add all of the missing POSIX definitions in unistd.h and limits.h 2025-06-01 13:48:03 +03:00
Bananymous dbdefa0f4a LibC: Implement pthread cancelation 
This code is not tested at all but it looks correct xD
 2025-06-01 13:48:03 +03:00
Bananymous 56fdf6002c Kernel/LibC: Implement pthread_kill 2025-06-01 13:48:03 +03:00