Bananymous
572c4052f6
Kernel: Fix Process APIs
2024-02-07 15:57:45 +02:00
Bananymous
132286895f
Kernel: Implement Socket inodes for tmpfs
2024-02-07 15:57:45 +02:00
Bananymous
41cad88d6e
Kernel/LibC: Implement dummy syscalls for accept, connect, listen
2024-02-07 15:57:45 +02:00
Bananymous
e1ffbb710b
Kernel/LibC: Implement basic ioctl for network addresses
2024-02-03 01:50:10 +02:00
Bananymous
0f154c3173
Kernel: Implement basic recvfrom
2024-02-02 13:50:00 +02:00
Bananymous
ec2f21bb9f
Kernel/LibC: Implement SYS_SENDTO
2024-02-02 03:16:01 +02:00
Bananymous
ab150b458a
Kernel/LibC: Implement basic socket binding
2024-02-02 01:31:58 +02:00
Bananymous
cf28ecd5a6
Kernel/LibC: Add SYS_SOCKET
2024-02-01 23:39:09 +02:00
Bananymous
dfe5a2d665
All: Cleanup all files
...
Add newline to end of files and remove whitespace from end of lines
2024-01-24 15:53:38 +02:00
Bananymous
5001fa58e0
Kernel: Fix wait syscall with atomics
2024-01-24 14:32:52 +02:00
Bananymous
ab39c6541a
Kernel: Require keymap loading superuser privileges
2024-01-10 14:50:30 +02:00
Bananymous
51214ea1bf
Kernel: Add load_keymap syscall and load Finnish keymap in init
2024-01-10 14:46:29 +02:00
Bananymous
d2d12d5281
Kernel: validate_{string,pointer}_access now return ErrorOr<void>
...
Now that signals are only processed when returning to userspace,
address validation has to do an early return.
2024-01-03 23:53:04 +02:00
Bananymous
0ba278041b
Kernel: Start exec by loading the ELF file. It might not exist...
2024-01-03 23:50:02 +02:00
Bananymous
9fa13079f2
Kernel: Implement supplementary groups
...
This code has very ugly file parsing code. I have to create API
for reading files line by line in kernel space...
This allows users to open framebuffer/input files without root.
Mounting has to be moved to userspace soon. It makes no sense to
hard code permissions for every (device) file.
2024-01-02 23:24:32 +02:00
Bananymous
96d831c31a
Kernel/LibC/Userspace: Implement chown and set tty owner on login
2024-01-02 22:19:38 +02:00
Bananymous
e227a87140
Kernel: Allow creating directories if path ends with '/'
...
Also create and create_dir will now fail with EEXISTS if file exists
2023-12-14 10:56:53 +02:00
Bananymous
24b71d1170
Kernel: Appreciate setuid and setgid bits executables
2023-12-06 18:14:27 +02:00
Bananymous
393ac33e3c
Kernel: Make sys_nanosleep interruptable by signals
2023-12-06 16:22:24 +02:00
Bananymous
deeb6d2756
Kernel: Cleanup sys_sleep() and TTY::read_impl
2023-12-06 16:21:22 +02:00
Bananymous
a12ffaa8a2
Kernel: Make sleep syscall interruptable
2023-12-06 13:13:37 +02:00
Bananymous
1c78671078
Kernel: Rework all signal code
...
Signal handling code was way too complex. Now everything is
simplified and there is no need for ThreadBlockers.
Only complication that this patch includes is that blocking syscalls
have to manually be made interruptable by signal. There might be some
clever solution to combat this is make this happen automatically.
2023-12-06 13:02:17 +02:00
Bananymous
cdcc36efde
Kernel: Remove unnecessary raise syscall
2023-12-06 13:00:45 +02:00
Bananymous
4a87d6052b
Kernel: Add API for implementing mmappable devices
2023-11-28 23:50:49 +02:00
Bananymous
09b7cb2f33
Kernel/LibC: Implement pread()
2023-11-28 23:47:30 +02:00
Bananymous
60e755210c
Kernel/LibC: Implement very basic msync
2023-11-22 22:44:06 +02:00
Bananymous
c084ce8b01
Kernel/LibC: Implement readlink and readlinkat
2023-11-11 23:16:52 +02:00
Bananymous
87ff38664a
Kernel/LibC: Add syscall and wrapper for unlink
2023-10-25 21:45:04 +03:00
Bananymous
6ee4d10651
Kernel/LibC/Userspace: Implement mkdir and creat
...
Touch now uses creat insteadd of open with O_CREAT flag
2023-10-25 21:07:26 +03:00
Bananymous
18e90d305d
Kernel: Add Inode API for creating directories
2023-10-25 19:36:04 +03:00
Bananymous
627b8cc140
Kernel/LibC: implement chmod syscall + libc wrapper
2023-10-25 02:35:37 +03:00
Bananymous
f3d9da9549
Kernel: Rewrite all read/write functions to use BAN::ByteSpan
...
This allows us to not work with raw pointers and use sized containers
for reading and writing.
2023-10-24 11:56:00 +03:00
Bananymous
9a6cc0dc2d
Kernel: Check whether ELF address space can be loaded
...
Before reserving address space in SYS_EXEC verify that ELF address
space is actually loadable. For example when trying to execute the
kernel binary in userspace, binarys address space would overlap with
current kernel address space. Now kernel won't crash anymore and
will just send SIGKILL to the process calling exec*().
2023-10-12 22:59:36 +03:00
39bc6c43dc
Kernel: Expose command line and environment to /proc
2023-09-30 23:01:33 +03:00
5ee3506474
Kernel: Add physical memory info to /proc/{pid}/meminfo
2023-09-30 22:11:45 +03:00
785de5f9b9
Kernel: /proc/{pid}/meminfo now reports per process memory usage
2023-09-30 21:20:18 +03:00
8f630a97df
Kernel: Add procfs that contains only pids
2023-09-30 21:19:36 +03:00
43c23db4a6
Kernel: Implement MAP_SHARED for regular files
...
Every inode holds a weak pointer to shared file data. This contains
physical addresses of pages for inode file data. Physical addresses
are allocated and read on demand.
When last shared mapping is unmapped. The inodes shared data is freed
and written to the inode.
2023-09-29 18:59:20 +03:00
8ff4e1f8c8
Kernel: Don't write to stat_loc on SYS_WAIT if it is null
2023-09-29 18:31:44 +03:00
7b1c573ad0
Kernel: Implement MAP_PRIVATE file mappings
...
mmap() now supports mapping files with MAP_PRIVATE.
2023-09-29 17:23:42 +03:00
4ee759aa3b
Kernel: Implement new abstract MemoryRegion
...
MemoryBackedRegion now inherits from this and is used for private
anonymous mappigs. This will make shared mappings and file backed
mappings much easier to implement.
2023-09-29 16:18:23 +03:00
a34f2e6e0d
Kernel: Use the new on demand ELF structure
...
All executable files are now read from disk and paged on demand.
This was a big rewrite of the old ELF library but in the end
everything seems much cleaner, since all the old functionality was
not actually needed for execution.
I have to do some measurements, but I feel like memory usage dropped
quite a bit after this change.
2023-09-29 02:00:10 +03:00
245f58cc3a
Kernel: mmap regions are now demand paged
...
mmap will not actually take any memory unless you use the given
memory.
2023-09-28 21:07:14 +03:00
d7ecf94347
Kernel: Reboot will now always succeed
...
If acpi reset fails, we forcefully trigger a triple fault to restart
the system.
2023-09-28 13:53:03 +03:00
6eda65eea6
Kernel/LibC/Userspace: Add SYS_POWEROFF + cli tool
...
You can now shutdown/reboot banan-os with the poweroff cli tool.
Reboot doesn't seem to work on qemu.
2023-09-28 12:36:47 +03:00
cb76f1ea75
Kernel: Add some functionality to disable TTY input/output
...
Userspace programs can call tty_ctrl() to disable/enable tty from
handling input and displaying output.
This API is probably going to change in the future to ioctl calls
but I'm not sure how ioctl is used and what functionality should it
have. I decided to create whole new function and syscall for now.
Next I will expose framebuffer in /dev/fb0 and then I can start work
on graphical environment! :D
2023-09-27 15:44:05 +03:00
1e6930a3bc
Kernel: SYS_SYNC now schedules sync to happen soon
...
You can pass non-zero argument to the syscall to block until the
sync has finished.
2023-09-27 00:34:00 +03:00
c33e658f98
Kernel: Allow creationg of empty processes and manual registration
...
You can now create kernel processes without any threads, add the
needed threads and only then register the process and its threads
to the scheduler.
2023-09-27 00:29:45 +03:00
22252cfcf0
Kernel: All syscalls now validate users pointers
...
We now validate pointers passed by the user, to forbid arbitary
memory read/write. Now the user is only allowed to pass in pointers
in their own mapped memory space (or null).
2023-09-25 22:07:12 +03:00
f6261e5dc9
Kernel: all mapped ranges are now stored in one container
...
We just now have a flag if a mapping is unmappable
2023-09-23 23:45:26 +03:00
d1bbbf48f6
Kernel: Fully remove sys_alloc and sys_free
...
I could delete the whole FixedWidthAllocator as it was now obsolete.
GeneralAllocator is still used by kmalloc. Kmalloc cannot actually
use it since, GeneralAllocator depends on SpinLock and kmalloc runs
without interrupts.
2023-09-23 03:53:30 +03:00
3ba15b41a3
Kernel/LibC: remove PATH resoltion from kernel
...
I have no idea why I had made PATH environment variable parsing
to be part of the kernel. Now the shell does the parsing and
environment syscall is no longer needed.
2023-09-23 03:08:14 +03:00
af4af1cae9
Kernel/LibC: add mmap for private anonymous mappings
...
This will be used by the userspace to get more memory. Currently
kernel handles all allocations, which is not preferable.
2023-09-22 23:01:14 +03:00
63dc2b6aa6
Kernel: Implement SYS_SYNC and add sync executable to userspace
...
You can (and have to) manually sync disk after writes to it.
2023-09-11 01:26:27 +03:00
8fb5f97a18
Kernel: Improve open() POSIX compatability
...
Also rename Process::sys_creat -> create_file since it is not
actually a syscall and only used by open as a healper.
2023-09-10 00:31:42 +03:00
921d95d18f
All: Clear lines with only whitspace in them
2023-09-10 00:31:42 +03:00
39a5c52088
Kernel: Fix directory permissions
...
We did not care about X bit in directories and instead used only the
R bit for search/read.
2023-09-08 11:46:53 +03:00
9901f95d78
Kernel: Add basic nanosleep, only millisecond percision
2023-09-04 12:59:50 +03:00
6f002c926a
Kernel: add basic fcntl() with couple of commands and no validation
2023-09-04 12:57:09 +03:00
38e72019c7
Kernel: kill() with negative pid actually matches pgid
2023-08-22 14:54:15 +03:00
d745fca86a
Kernel: Process keeps track if forked process has called exec*()
2023-08-22 14:53:46 +03:00
60a2185ee6
Kernel/LibC: implement proper getpgid and setpgid
2023-08-22 14:53:12 +03:00
d634fec8dc
Kernel: Add function to enumerate processes in session
2023-08-22 14:52:28 +03:00
c9243f0d1e
Kernel/LibC: Add {get,set}pgrp()
2023-08-22 11:36:33 +03:00
0f6c19a1b7
Kernel: Barebones implementation sessions and process groups
2023-08-22 11:35:40 +03:00
79f3aa5419
Kernel/LibC: add dup() syscall and function
2023-08-17 12:03:29 +03:00
e1400f9680
Kernel: Remove unused syscall
2023-08-11 11:43:48 +03:00
96c0ad0d3d
Kernel: Remove get_unix_timestamp from SystemTimer
...
Kernel now uses the percise real_time() and time_since_boot()
2023-08-09 08:57:50 +03:00
6fcb191ca0
Kernel: Add PageTable::Flags::CacheDisable
...
Also fix multiple places where we were using uint8_t as page table
flags instead of PageTable::flags_t which we promoted to uint16_t
while back.
2023-08-06 23:59:30 +03:00
c732297623
Kernel: Rename TimerHandler to SystemTimer
...
I changed SystemTimer to only handle the "best" supported timer
it can initialize.
2023-08-04 16:06:47 +03:00
659adb89a6
Kernel: Start work on abstracting Timers
2023-08-04 10:29:42 +03:00
3139391e06
Kernel: Change PageTable API
...
Getting free pages not reserves them, so you don't have to hold
the page table lock :)
2023-08-02 22:09:14 +03:00
a78a7ed156
Kernel: Cleanup returns from any kind on interrupts
2023-08-01 14:23:50 +03:00
c4f6c859c1
Kernel: Generally improve signals
2023-07-31 22:28:18 +03:00
abe8810d47
Kernel: raise() now force sends signal
2023-07-30 14:17:07 +03:00
acf125c853
Kernel: Signals are not queued anymore
...
Posix doesn't require signal queing if you don't use sigqueue() which
we don't support. Process also has its own pending signal mask.
2023-07-29 16:54:31 +03:00
3c6be319b1
Kernel: Restructure process and thread termination
...
When we want to kill a process, we mark its threads as Terminating
or Terminated. If the thread is in critical section that has to be
finished, it will be in Terminating state until done. Once Scheduler
is trying to execute Terminated thread it will instead delete it.
Once processes last thread is marked Terminated, the processes will
turn it into a cleanup thread, that will allow blocks and memory
cleanup to be done.
2023-07-28 18:06:20 +03:00
7b4a2fe3d1
Kernel: Process::exit() unblocks the whole lock before blocking
2023-07-24 22:29:59 +03:00
f6ee4b3496
Kernel: Implement SYS_GET_PID and SYS_TCSETPGID
...
we don't have consept of process groups yet
2023-07-24 22:29:59 +03:00
1ef0534b69
Kernel: TTY now stores foreground process pid
...
this will be process pgid when we have process groups
2023-07-24 22:29:59 +03:00
b9dd1895bb
Kernel: add Thread::queue_signal()
2023-07-24 22:26:10 +03:00
f76d921e25
Kernel: you can now ask process if it is userspace process
2023-07-23 18:54:10 +03:00
9729e5a05b
Kernel: Change signal kernel API
...
return rsp and rip are now stored per thread
2023-07-23 18:33:10 +03:00
c12f4fb40f
Kernel: Make signals more POSIX
2023-07-21 20:01:12 +03:00
10169d773d
Kernel/LibC: Add SYS_KILL/kill()
2023-07-21 19:27:38 +03:00
b78596dcf4
Kernel: Scheduler now sends queued signals
2023-07-21 19:27:10 +03:00
40f7c6b8fa
Kernel: Make signals thread specific
2023-07-21 19:00:59 +03:00
8063700d7b
Kernel: add default signal actions
2023-07-21 18:02:35 +03:00
c2cf98e32f
Kernel/LibC: Add bareboness signals
...
You can now call raise() to raise a signal. Signal handlers are
not yet supported, but the handling works :)
2023-07-21 15:45:02 +03:00
94af856db0
Kernel: cleanup sys_exec()
...
We now scope everyting so desctructors get called
2023-07-19 23:20:39 +03:00
5d2bfc858e
Kernel: SYS_FORK can now fail instead of panicing on error
2023-07-19 17:47:12 +03:00
9ea2c1d932
Kernel: Support execute disable bit
...
We will now map executable memory explicitly as executable.
2023-07-13 14:28:53 +03:00
65559a3e44
Kernel: Fix multiple bugs with terminal
2023-07-13 13:09:52 +03:00
9bcfb34524
Kernel: Rewrite whole device structure
...
We now have DevFileSystem which is derived from RamFileSystem. All
devices are RamInodes. We don't have separate DeviceManager anymore.
To iterate over devices, you can loop througn every inode in devfs.
2023-07-10 23:17:14 +03:00
178fc00905
Kernel: creat() mode now has to be access mode
...
We provide the S_IFREG in creat
2023-07-10 15:34:41 +03:00
f7c4bc908e
Kernel: open() and openat() now take mode as parameter
...
O_CREAT now tries to create file if O_CREAT is specified
2023-07-10 15:08:54 +03:00
74fc0aa308
Kernel: Inode::create_file() now takes uid and gid as parameters
2023-07-10 13:32:10 +03:00
b6c4a2dbf1
Kernel: Edit lock scopes and make string copy able to fail
2023-07-07 23:12:19 +03:00
a2f5ad7bed
Kernel: Move open file descriptors to their own class
...
This simplifies code a lot :)
2023-07-07 23:11:37 +03:00
07fec6e211
Kernel/LibC: add basic dup2
2023-07-06 23:17:54 +03:00
Bananymous
Bananymous