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Author SHA1 Message Date
Bananymous 7ec860a3d4 Kernel: Print stack trace on isr 2023-09-11 01:20:55 +03:00
Bananymous 9b9a6b2cfc Kernel: Fix ext2 file write 2023-09-11 01:20:39 +03:00
Bananymous f178fa6d5b BuildSystem: remove install-usb.sh since it is not used 
This was dangerous script since it rewrote /dev/sda
 2023-09-10 01:20:44 +03:00
Bananymous 9ebf29991d Kernel: Add basic dd command 
This only supports if, of, bs, count and status=progress
 2023-09-10 01:19:47 +03:00
Bananymous 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
Bananymous 921d95d18f All: Clear lines with only whitspace in them 2023-09-10 00:31:42 +03:00
Bananymous 1fcf122c50 Kernel: Add basic ZeroDevice to /dev/zero 2023-09-10 00:31:42 +03:00
Bananymous dd9af56e21 Kernel: Start work on making inodes more thread safe 
All inode operations are now locked and thread blocked
 2023-09-10 00:31:42 +03:00
Bananymous 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
Bananymous 660f7cbfeb Kernel: Ext2 directories can allocate new blocks if needed 2023-09-08 10:29:26 +03:00
Bananymous 1abf54d652 Kernel: Fix bug in disk writing 
I have used two weeks in locating a bug in my ext2 implementation
while the bug was actually in disk write. If you called write_sectors
on disk it would write the first sector_size bytes repeatedly to all
asked sectors and this corrupted the disk...
 2023-09-08 02:43:08 +03:00
Bananymous 3750d29b2b Kernel: Fix possible out-of-bounds disk access in ext2 2023-09-08 02:42:53 +03:00
Bananymous e75522a005 BuildSystem: Cleanup disk image creation 2023-09-08 02:41:39 +03:00
Bananymous 5972c73950 LibC: fix fread implementation 
fread() should read until either size*nitems bytes are read or eof
is reached.
 2023-09-07 16:00:47 +03:00
Bananymous 41757b5f6c Shell: Clean exit on ^D and use getchar() 
Use getchar() instead of fread(&ch, 1, sizeof(char), stdin). This
is much cleaner.
 2023-09-07 15:51:05 +03:00
Bananymous c33c7f8b3b Init: use read instead of fread() 
This allows actually correct behaviour. My fread implementation is
flawed. It should not return on '\n'
 2023-09-07 15:47:59 +03:00
Bananymous 4648f6718e Kernel: Cleanup TTY::read() 2023-09-07 15:27:21 +03:00
Bananymous b30af0edca Kernel: TTY now reads input byte by byte 
This allows correct behaviour for character streams / keyboard
handling. Serial input can now send working ^C :D
 2023-09-07 15:06:27 +03:00
Bananymous 5e1725abb2 Kernel: Remove bitmap debug printing from ext2 inode allocation 2023-09-06 01:25:09 +03:00
Bananymous 6ad2f23259 Kernel: Correct inode links count 2023-09-05 14:46:56 +03:00
Bananymous 0d725f68e3 Snake render grid lines without extra space after last '#' 2023-09-05 14:35:53 +03:00
Bananymous 0770ba0936 BuildSystem: Don't set permissions on image creation 
This is already handled by *new* tar ball sysroot
 2023-09-05 14:35:53 +03:00
Bananymous c13b5aecfe Snake: Reorder apple generation/snake body update 
If new apple was generated to heads previous position after update,
it would not render.
 2023-09-05 14:30:30 +03:00
Bananymous 3892579049 Base: Add grub entries for serial-only boot 
We can now fully boot with serial input and output :)
Qemu can be run with -nographic flag
 2023-09-05 01:07:52 +03:00
Bananymous ba7e1b9ca5 Kernel: Add /dev/tty symlink that targets the current tty 2023-09-05 01:07:52 +03:00
Bananymous f0772e385c Kernel: Implement basic RamSymlinkInode 2023-09-05 01:07:52 +03:00
Bananymous 3fd94b1acb Kernel: You can now read serial output from the /dev/ttyS* 2023-09-05 01:07:52 +03:00
Bananymous 93c5755012 Kernel: Receive interrupts for COM1 and COM2 input 
The input has to still be attached to terminal
 2023-09-04 22:07:40 +03:00
Bananymous 323de3c866 Kernel: Rework whole Terminal structure 
Serial monitors can now be used as a output. This requires editing
init code for the stdio opening. Serial input is not supported, so qemu
still needs graphical window for ps/2 keyboard.
 2023-09-04 19:34:18 +03:00
Bananymous 52b9fddfd7 Kernel: Make serial devices to their own class 2023-09-04 14:57:05 +03:00
Bananymous e4041ce5ec Userspace: Implement basic snake game :) 2023-09-04 14:30:45 +03:00
Bananymous 04cfbca336 Kernel: Add ANSI support for hiding/showing cursor to TTY 2023-09-04 14:30:09 +03:00
Bananymous 7184514b5d LibC: add time() implementation 2023-09-04 13:52:58 +03:00
Bananymous dfb18d38f7 LibC: Add rand() and srand() implementation 
This code is from the wikipedia page for Permuted congruential generator
 2023-09-04 13:52:13 +03:00
Bananymous 9901f95d78 Kernel: Add basic nanosleep, only millisecond percision 2023-09-04 12:59:50 +03:00
Bananymous b2139c0b1e Kernel: Add basic support for O_NONBLOCK (only for tty) 2023-09-04 12:57:52 +03:00
Bananymous 6f002c926a Kernel: add basic fcntl() with couple of commands and no validation 2023-09-04 12:57:09 +03:00
Bananymous a711462ef4 Kernel: Split ext2 implementation to multiple files 2023-09-01 15:10:23 +03:00
Bananymous f31c6b847f Kernel: Start work on writable ext2 filesystem 2023-08-31 23:40:31 +03:00
Bananymous 195ccf4f53 Kernel: Add missing ififo() to Inode::Mode 2023-08-31 21:38:31 +03:00
Bananymous 5786ffe7d2 BuildSystem: Add cmake target to validate main partition 2023-08-31 21:37:30 +03:00
Bananymous 073edd0b8e Kernel: Stack trace dumping validates pointers before using them 2023-08-31 21:36:23 +03:00
Bananymous 2c136dae2d Update README.md 2023-08-31 17:54:12 +03:00
Bananymous 250789aa20 Kernel: better handle kernel errors 2023-08-29 00:13:21 +03:00
Bananymous 8032824054 BuildSystem: use -a with rsync 
This allows cmake to not rebuild whole project every time
 2023-08-28 11:38:17 +03:00
Bananymous 7aaea786c2 LibC: Don't undef needed values in inttypes.h 2023-08-24 15:48:14 +03:00
Bananymous ce8e8e68f4 BuildSystem: Add USES_TERMINAL when preparing sysroot 
You were not able to enter sudo password on sysroot unpacking,
which caused ninja to hang
 2023-08-23 20:48:40 +03:00
Bananymous 80e7a89f67 BuildSystem: Base sysroot is now distributed as a tar ball 
This allows file and directory permissions work as intended.

cmake is now filled with 'sudo' but with sudo timeout this should be
fine.
 2023-08-23 10:38:21 +03:00
Bananymous b780df8be0 Shell: hostname is not parsed from /etc/hostname 2023-08-23 10:38:21 +03:00
Bananymous c4210b5810 Shell: use process groups more properly 2023-08-22 14:54:50 +03:00
Bananymous 38e72019c7 Kernel: kill() with negative pid actually matches pgid 2023-08-22 14:54:15 +03:00
Bananymous d745fca86a Kernel: Process keeps track if forked process has called exec*() 2023-08-22 14:53:46 +03:00
Bananymous 60a2185ee6 Kernel/LibC: implement proper getpgid and setpgid 2023-08-22 14:53:12 +03:00
Bananymous d634fec8dc Kernel: Add function to enumerate processes in session 2023-08-22 14:52:28 +03:00
Bananymous e33bf62bba BAN: increase function size to 5 * sizeof(void*) 2023-08-22 14:52:03 +03:00
Bananymous 2dcd4ed131 Shell/init: We now use pgrp instead of pid and init open terminal 2023-08-22 11:37:04 +03:00
Bananymous c9243f0d1e Kernel/LibC: Add {get,set}pgrp() 2023-08-22 11:36:33 +03:00
Bananymous 0f6c19a1b7 Kernel: Barebones implementation sessions and process groups 2023-08-22 11:35:40 +03:00
Bananymous 642929f071 BAN: Add enum class Iteration for for_each loops 2023-08-22 11:30:53 +03:00
Bananymous 2746419c8c BAN: Function call is now const 2023-08-22 11:30:40 +03:00
Bananymous b5a7246ba7 LibC: make printf buffer only 128 bytes 
Only reason for it to be big is if you want super large zero padding
for your number. This will eventually be handled without the buffer.
 2023-08-18 16:49:27 +03:00
Bananymous c1d82282d9 Id: Print username corresponding to uid/euid 
Also print euid and egid if they differ from uid or gid.
 2023-08-18 15:36:51 +03:00
Bananymous 0abe30af38 BuildSystem: only apply stack usage warning to libc 2023-08-17 20:49:52 +03:00
Bananymous 089da2608c Shell: command execution and parsing support piped commands 
There is still problems with "blocking" builtin commands (time),
return value, ...
 2023-08-17 12:05:38 +03:00
Bananymous 85c6149138 LibC: add fileno() and fdopen() 
fdopen() doesn't currently care about mode and will have same mode
as the underlying file descriptor.
 2023-08-17 12:03:59 +03:00
Bananymous 79f3aa5419 Kernel/LibC: add dup() syscall and function 2023-08-17 12:03:29 +03:00
Bananymous ed5f4d64a8 Shell: add basic printf test 2023-08-16 10:49:34 +03:00
Bananymous 569e76a848 LibC: printf handles nan and inf 2023-08-16 10:49:34 +03:00
Bananymous 3a36c30e80 LibC: math.h defines is*() macros and uses builtins for values 2023-08-16 10:41:55 +03:00
Bananymous a09232a555 cat: use 1025 buffer. this allows reads to be 1024 byte 
reading from disk currently returns ENOTSUP if buffer size is not
multiple of sector size.
 2023-08-16 09:33:14 +03:00
Bananymous 5a94818210 Shell: $? returns last return value 2023-08-15 09:17:46 +03:00
Bananymous 2441f208c6 Userspace: Add basic whoami command 2023-08-15 09:03:51 +03:00
Bananymous db2eca697e Shell: '\u' in PS1 is replaced with username corresponding to euid 2023-08-14 14:55:23 +03:00
Bananymous 81d79cca61 Shell: ^A moves cursor to the beginning of line 2023-08-14 12:26:22 +03:00
Bananymous 871c792976 Kernel: O_SEARCH doesn't require any permissions 
Except read permissions for all directories in the path

This allows us to stat e.g. device files for which we don't have
the permissions.
 2023-08-11 12:26:07 +03:00
Bananymous 9ab7e76a3b LibC: cleanup fstatat 2023-08-11 12:25:15 +03:00
Bananymous 8480ffe108 Kernel: open() now validates file access mode 2023-08-11 11:53:38 +03:00
Bananymous e1400f9680 Kernel: Remove unused syscall 2023-08-11 11:43:48 +03:00
Bananymous 77ff585248 Userspace: implement basic stat 
I tried to format the output pretty much how linux does, except for
uid and git -> name resolution which is not implemented
 2023-08-11 10:30:50 +03:00
Bananymous 9cb50cba33 LibC: Fix S_IF* macros and add macros for access/type masks 2023-08-11 10:30:50 +03:00
Bananymous 6e5bce3c57 Kernel: Zero initialize threads sse_storage 2023-08-11 00:26:43 +03:00
Bananymous f75adab9d8 Kernel: Move structures in boot.S to .data section 2023-08-11 00:26:12 +03:00
Bananymous 5d0a6e7b08 Kernel: HPET is now used in legacy mode when PIC is forced 2023-08-10 22:01:30 +03:00
Bananymous b0c8a9cdc4 Kernel: Fix slave PIC 
we dont mask interrupt 2 in PIC since it corresponds to the
slave PIC. Also cleanup PIC code :)
 2023-08-10 21:52:31 +03:00
Bananymous ebe0adb3b5 Kernel: HPET doesn't use the legacy mapping anymore 2023-08-10 21:08:32 +03:00
Bananymous 4842d5e2b9 Kernel: APIC now uses MMIO namespace functions for mmio 2023-08-10 21:07:23 +03:00
Bananymous 0b8396b1a6 Kernel: IDT now sends EOI for every interrupt 
EOI is sent before calling the interrupt handler. This should be fine
since all interrupts are processed with interrupts disabled
 2023-08-09 09:57:02 +03:00
Bananymous 55ef793a74 Kernel: Validate HPET tick period 2023-08-09 09:50:38 +03:00
Bananymous 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
Bananymous 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
Bananymous 3df97c36e6 Kerne: SystemTimer can now output the current real time 2023-08-04 16:06:47 +03:00
Bananymous 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
Bananymous ca5a097ef5 Kernel: Add function to retrieve boot time as timespec 2023-08-04 16:06:47 +03:00
Bananymous 1f8a5f0ce5 Kernel: F11 now prints current time to debug output 
This allows better timer percision and system freeze checks
 2023-08-04 15:22:51 +03:00
Bananymous 1fa7a1cac4 Kernel: Add basic HPET support to replace PIT if exists 
This works same way as the PIT implementation; calls Scheduler every
milli second.
 2023-08-04 15:22:51 +03:00
Bananymous ea4a70c3b3 Kernel: Move sleep() implementation to TimerHandler 2023-08-04 15:15:00 +03:00
Bananymous aa0929614a Kernel: Add more structures to ACPI 2023-08-04 15:13:47 +03:00
Bananymous 3c31fc9c4b Kernel: Implement basic MMIO functions 
This is equivalent to IO.h except for memory mapped io instead of
IO ports
 2023-08-04 15:12:29 +03:00
Bananymous 7eb2c140fe Kernel: Move RTC to Timer directory 
PIT ms counter seems to be off by multiple seconds/minute. I will
be probably changing to HPET for system time
 2023-08-04 11:12:16 +03:00
Bananymous 659adb89a6 Kernel: Start work on abstracting Timers 2023-08-04 10:29:42 +03:00