Commit Graph

1327 Commits

Author SHA1 Message Date
Bananymous 57605c2b3e meminfo: Print allocated physical memory percentage 2023-10-03 10:39:27 +03:00
Bananymous 1cd99631e1 Shell: source $HOME/.shellrc if found on Shell startup 2023-10-03 10:39:27 +03:00
Bananymous f67ed9a66e Shell: Implement sourcing scripts 2023-10-03 10:24:10 +03:00
Bananymous 6c11dac113 meminfo: Add process command line to the output 2023-09-30 23:17:31 +03:00
Bananymous 39bc6c43dc Kernel: Expose command line and environment to /proc 2023-09-30 23:01:33 +03:00
Bananymous 5ee3506474 Kernel: Add physical memory info to /proc/{pid}/meminfo 2023-09-30 22:11:45 +03:00
Bananymous c5119cda97 Userspace: Add meminfo command that parses /proc/{pid}/meminfo 2023-09-30 21:20:53 +03:00
Bananymous 785de5f9b9 Kernel: /proc/{pid}/meminfo now reports per process memory usage 2023-09-30 21:20:18 +03:00
Bananymous 8f630a97df Kernel: Add procfs that contains only pids 2023-09-30 21:19:36 +03:00
Bananymous 56bb419884 Kernel: All process' memory areas can report their virtual mem usage 2023-09-30 21:15:46 +03:00
Bananymous d7a00e8cc2 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 9f0797047f Kernel/LibC: dirent now contains file type 2023-09-30 20:46:57 +03:00
Bananymous e8a0eeb0b4 Kernel: RamInode verifies that you have not specified mode type
This is kinda weird behaviour, but it ensures the user cannot
create e.g. CharacterDevice with mode having IFLNK.

The Inode overrider is the only one setting the mode.
2023-09-30 20:46:57 +03:00
Bananymous 3e5645d453 Kernel: Add API for RamDirectoryInodes to delete containing inodes 2023-09-30 19:22:30 +03:00
Bananymous 2301654c4e Kernel: Rework RamInode API
RamInode is now a general RamInode with no data. RamFileInode is now
a inode for regular files. This is much cleaner and more intuitive
since there is no reason for most non-regular inodes to hold data
Vector.
2023-09-30 19:22:30 +03:00
Bananymous 0b93fce923 BAN: Remove endianness functions from Math
There is now a Endianness.h for these. The functions were super slow.
2023-09-29 19:38:07 +03:00
Bananymous 6304388100 Shell: Quick fix to not freeze for multiple seconds
When sync is writing to disk, it reserves whole disk to itself.
This commit makes Shell to read username only once from getpwuid().
We used to get username every time prompt was printed.
2023-09-29 19:20:48 +03:00
Bananymous 96b1186c19 Userspace: Implement basic test for MAP_SHARED 2023-09-29 18:59:37 +03:00
Bananymous 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
Bananymous 8ff4e1f8c8 Kernel: Don't write to stat_loc on SYS_WAIT if it is null 2023-09-29 18:31:44 +03:00
Bananymous b57811b371 Userspace: Implement cat-mmap
This behaves exactly as cat, but uses mmap to read the file.
2023-09-29 17:24:55 +03:00
Bananymous 23f429e23b LibC: Fix mmap()
mmap() did not pass fildes to the syscall structure.
2023-09-29 17:24:21 +03:00
Bananymous 7b1c573ad0 Kernel: Implement MAP_PRIVATE file mappings
mmap() now supports mapping files with MAP_PRIVATE.
2023-09-29 17:23:42 +03:00
Bananymous 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
Bananymous 48096b18c2 LibC: mmap returns MAP_FAILED instead of NULL 2023-09-29 10:38:08 +03:00
Bananymous 06af9f3187 LibELF: Optimize LoadableELF::clone() memory usage
We only clone mapped pages that have been marked as writeble.
Read/execute only pages will be exactly as in the file itself and
can be demand paged also :D
2023-09-29 02:05:12 +03:00
Bananymous 16eb055737 Kernel: Add some sanity assertions/functions 2023-09-29 02:03:19 +03:00
Bananymous 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
Bananymous 8357dd7b3d LibELF: Implement new ELF structure
This structure is used for demand pagable execution. It handles all
memory allocation and file reading.
2023-09-29 01:58:03 +03:00
Bananymous 5bdf7d313f LibELF: Add types for native executable 2023-09-29 01:56:57 +03:00
Bananymous 5b6569f2c9 Kernel: Fix off by one error when calculating pages in range 2023-09-29 01:56:15 +03:00
Bananymous 58f4ed22c4 Kernel: Don't map interrupt stack as userspace accessable 2023-09-28 21:58:24 +03:00
Bananymous 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
Bananymous 15cd59b8ce 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 d9a5e471f5 Kernel: Remove duplicate code in VirtualRange::create_to_vaddr_range 2023-09-28 13:59:49 +03:00
Bananymous 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
Bananymous 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
Bananymous d45bf363f1 Kernel: Enter ACPI mode with lai 2023-09-28 12:30:27 +03:00
Bananymous 1abf787596 LibC: Add errno for unknown error 2023-09-28 12:06:17 +03:00
Bananymous 3b283cb860 Kernel: Make tty overload correct has_data() function
This allows snake game to work again :)
2023-09-28 11:54:12 +03:00
Bananymous 4a01e4c3b4 Userspace: Use printf length modifiers when printing 2023-09-28 11:49:31 +03:00
Bananymous 61694268e2 LibC: Implement length modifiers to printf 2023-09-28 11:42:57 +03:00
Bananymous 399d5338c6 Shell: String leading and trailing whitespace from commands
This fixes a bug of inserting empty argument if command had trailing
whitespace
2023-09-28 10:28:49 +03:00
Bananymous a8d74f604e BAN: Update Endiannes API
Add functions to swap endiannes or convert host to big/little endian

This code should be very compiler friendly and should be optimized to
single bswap instruction on x86.
2023-09-28 01:22:14 +03:00
Bananymous 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
Bananymous 459afef89e Kernel: Disable DiskCache sync messages 2023-09-27 14:12:21 +03:00
Bananymous 8621d8a155 BuildSystem: Rework calling qemu
I change always manually the serial/graphical. When running cmake
you can define variable QEMU_ACCEL that will be used as accelerator.

Also ninja has the following targets for running qemu
  1. qemu:            Run graphical qemu environment
  2. qemu-nographic:  Run qemu without graphical screen. You should
                      select 'serial only' from grub menu.
  3. qemu-debug:      Run qemu without accelerator and interrupt
                      debugger.
2023-09-27 13:49:01 +03:00
Bananymous 1c26a402b0 Kernel: Add missing TRY() to font loading 2023-09-27 00:49:53 +03:00
Bananymous b573701625 Sync: Add some argument parsing to sync(1)
You can specify --block to make the program wait until sync is
complete.
2023-09-27 00:37:23 +03:00
Bananymous a69e5fb288 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