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196 Commits

Author SHA1 Message Date
Bananymous d7e362aef8 LibC: Implement basic execvp 2023-12-06 18:14:00 +02:00
Bananymous 32be14fdb0 LibC: Implement and fix some string.h functions 2023-12-06 18:13:34 +02:00
Bananymous 094978b8d1 LibC: make sleep() set errno if sleep woke up early 2023-12-06 13:13:43 +02:00
Bananymous b334904427 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 afa1f07fd2 Kernel: Remove unnecessary raise syscall 2023-12-06 13:00:45 +02:00
Bananymous e63820ba7b LibC: cleanup and fix fgets 
My quick fix for fgets wrote non-nullterminated newline if size was
one.

POSIX doesn't specify what happens if size == 0, so I do the same as
glibc and return NULL without setting errno.
 2023-12-05 10:00:43 +02:00
Bananymous ab44c60d7e LibC: fix fgets when reading empty line 2023-12-05 07:46:14 +02:00
Bananymous c10dffd719 Kernel: Make internal framebuffer bpp constexpr defined in libc 2023-11-29 20:07:33 +02:00
Bananymous 74b3fc2e7c Kernel: Reading from negative offset in fb dev gives out info 2023-11-28 23:50:11 +02:00
Bananymous 4a0bfd08e0 Kernel/LibC: Implement pread() 2023-11-28 23:47:30 +02:00
Bananymous 46ad4f2818 Kernel/LibC: Implement very basic msync 2023-11-22 22:44:06 +02:00
Bananymous 447da99f0b Kernel/LibC: Implement readlink and readlinkat 2023-11-11 23:16:52 +02:00
Bananymous 6d899aa6ce BuildSystem: using sysroot doesn't need root privileges anymore! 
Sysroot is now created with fakeroot. This allows root access to be
only needed for disk image creation, since it uses loopback devices.
 2023-11-04 17:50:43 +02:00
Bananymous bc1d1bf919 LibC: implement and call __cxa_finalize() on exit() 
This allows global destructors to be actually called
 2023-10-30 11:10:08 +02:00
Bananymous f05b9a6877 Kernel/LibC: Add crt* files to LibC and remove crt0 from kernel 
There was no reason for libc get crt0 from kernel.
 2023-10-30 11:06:13 +02:00
Bananymous 74bfb930f2 Kernel/LibC: Add syscall and wrapper for unlink 2023-10-25 21:45:04 +03:00
Bananymous 8bb47aee02 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 15bb1804ef Kernel/LibC: implement chmod syscall + libc wrapper 2023-10-25 02:35:37 +03:00
Bananymous 797ca65c66 Kernel: Add physical memory info to /proc/{pid}/meminfo 2023-09-30 22:11:45 +03:00
Bananymous a511441f7e Kernel: /proc/{pid}/meminfo now reports per process memory usage 2023-09-30 21:20:18 +03:00
Bananymous 38320018dc LibC: Implement stpcpy since gcc seems to need it 
gcc seems to optimize some calls to strcpy to stpcpy
 2023-09-30 20:58:19 +03:00
Bananymous d883d212b1 Kernel/LibC: dirent now contains file type 2023-09-30 20:46:57 +03:00
Bananymous d54c6b7f6b LibC: Fix mmap() 
mmap() did not pass fildes to the syscall structure.
 2023-09-29 17:24:21 +03:00
Bananymous 376b9f7272 LibC: mmap returns MAP_FAILED instead of NULL 2023-09-29 10:38:08 +03:00
Bananymous 49d941ad65 LibC: Fix a bug in malloc 
You could not allocate with size equal to one of the pool sizes.
 2023-09-28 21:05:27 +03:00
Bananymous 79851394b3 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
Bananymous 0b11d76576 LibC: Add errno for unknown error 2023-09-28 12:06:17 +03:00
Bananymous 1cd12b5f16 LibC: Implement length modifiers to printf 2023-09-28 11:42:57 +03:00
Bananymous 8d5369fafe 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
Bananymous 6cb8bda6e1 LibC: add syncsync() to unistd.h 
This is my own WELL NAMED (:D) function that takes a paramemeter
to make the sync operation synchronous.
 2023-09-27 00:35:36 +03:00
Bananymous fc953df281 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
Bananymous fe2dca16f0 Kernel/LibC: add flag to enable/disable sse support 
SSE support is very experimental and causes GP. I decided to make
SSE not default until I get to fixing it :)
 2023-09-23 02:28:25 +03:00
Bananymous f662aa6da2 Kernel/LibC: userspace malloc now uses mmap to get memory 
We could remove syscalls to allocate more memory. This was not
something the kernel should have done.
 2023-09-23 02:26:23 +03:00
Bananymous fee3677fb9 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
Bananymous 5fae3cec2a 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
Bananymous 720bc418a6 All: Clear lines with only whitspace in them 2023-09-10 00:31:42 +03:00
Bananymous 9e4a87021c 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 0ec4f970f7 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 a15ffcb071 LibC: add time() implementation 2023-09-04 13:52:58 +03:00
Bananymous 692b77fb8e 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 044378cfa3 Kernel: Add basic nanosleep, only millisecond percision 2023-09-04 12:59:50 +03:00
Bananymous 19d0fb6fcd Kernel: add basic fcntl() with couple of commands and no validation 2023-09-04 12:57:09 +03:00
Bananymous e8a73f9696 BuildSystem: use -a with rsync 
This allows cmake to not rebuild whole project every time
 2023-08-28 11:38:17 +03:00
Bananymous 1a0d114861 LibC: Don't undef needed values in inttypes.h 2023-08-24 15:48:14 +03:00
Bananymous b05cf9ef09 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 97ea4986af Kernel/LibC: implement proper getpgid and setpgid 2023-08-22 14:53:12 +03:00
Bananymous 42b90ae76c Kernel/LibC: Add {get,set}pgrp() 2023-08-22 11:36:33 +03:00
Bananymous b10168eb1c 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 dc7391dc89 BuildSystem: only apply stack usage warning to libc 2023-08-17 20:49:52 +03:00
Bananymous dcd8374b89 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