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481 Commits

Author SHA1 Message Date
Bananymous 5293ae070d Kernel: ProcFS inodes reflect processes ruid/rgid 
setgid/setuid did not change the permissions of procfs inodes. This
made Shell launched by init not appear in meminfo.
 2023-11-18 14:26:44 +02:00
Bananymous a312d75bb2 Bootloader: Implement VESA video mode query and pass it to kernel 
Kernel now gets framebuffer from bootloader. Framebuffer dimensions
and bpp are hardcoded in bootloader, but will probably be read from
config file at some point.
 2023-11-17 22:45:35 +02:00
Bananymous 065eec430e Kernel/Bootloader: banan-os can now be booted with my bootloader :D 2023-11-17 20:33:02 +02:00
Bananymous ec56e9c6f1 Kernel: Don't use multiboot2 explicitly. Parse it to common structure 
This allows support of multiple different bootloaders
 2023-11-17 18:54:59 +02:00
Bananymous 447da99f0b Kernel/LibC: Implement readlink and readlinkat 2023-11-11 23:16:52 +02:00
Bananymous 2191ca46bb Kernel: Make TmpFS enforce max page count. 2023-11-07 16:13:21 +02:00
Bananymous cec04a2858 Kernel: Remove now obsolete RamFS 
Everything is using now the better TmpFS which uses physical pages
for page allocation instead of the static kmalloc memory.
 2023-11-07 16:07:11 +02:00
Bananymous b87351f6d5 Kernel: Make DevFS use the new and better TmpFS instead of RamFS 2023-11-07 16:05:05 +02:00
Bananymous 464737fbe9 Kernel: Add method to TmpFS for looping over all (cached) inodes 2023-11-07 16:04:34 +02:00
Bananymous 8b4f661acb Kernel: Lock TmpFS in all its methods 2023-11-07 16:03:52 +02:00
Bananymous 27963febc0 Kernel: Implement symlinks to TmpFS 2023-11-07 15:59:50 +02:00
Bananymous 6d4b684219 Kernel: Make PS/2 keyboard wait until interrupts are enabled 2023-11-07 15:58:50 +02:00
Bananymous 1acc0abf2e Kernel: Make unlinking from /proc always fail with EPERM 2023-11-07 02:40:27 +02:00
Bananymous a46b2f43d9 Kernel: Make ProcFS use the new TmpFS internally 2023-11-07 02:35:44 +02:00
Bananymous a20f8607de Kernel: Implement TmpFS Inode unlinking and deletion 2023-11-06 21:49:12 +02:00
Bananymous af330f7b8e Kernel: TmpFS directory inodes now iterate over only valid entries 2023-11-06 21:41:51 +02:00
Bananymous cbb2c37e00 Kernel: Implement TmpFS inode chmod 2023-11-06 20:11:34 +02:00
Bananymous ab4f033385 Kernel: Cleanup TmpFS code and block access doesn't require allocs 
TmpFS blocks are now accessed with a simple wrapper
 2023-11-06 20:07:09 +02:00
Bananymous 1ed08f62d3 Kernel: TmpInode blocks are on demand allocated 2023-11-06 10:44:37 +02:00
Bananymous 8164c15b6c Kernel: Implement read/write/truncate for TmpFileInode 2023-11-05 02:28:43 +02:00
Bananymous f9bf47ab30 Kernel: Start work on proper TmpFS in Heap instead of kmalloc memory 2023-11-04 18:18:45 +02:00
Bananymous e5ffadb109 Kernel: Add better APIs for fast page 2023-11-04 18:13:16 +02:00
Bananymous 3bac19e518 Kernel: Add fast page to page table 
Add "fast page" to KERNEL_OFFSET. This is always present in page
tables and only requires changing the page table entry to map. This
requires no interrupts since it should only be for very operations
like memcpy.

I used to map all temporary mappings to vaddr 0, but this is much
better. C++ standard always says that nullptr access is undefined
and this gets rid of it.

Fixed some bugs I found along the way
 2023-10-30 19:02:09 +02:00
Bananymous 4dbe15aa0e Kernel: Remove GeneralAllocator since it was not used 2023-10-30 18:13:17 +02:00
Bananymous ce2461d0e8 Kernel: panic takes arguments as rvalue references 2023-10-30 16:22:02 +02:00
Bananymous 5d34cebeca Kernel: Fix stack OOB detection 
I now check both interrupt and normal stack to detect OOB. Processes
are killed if they encouner stack over/under flow.
 2023-10-30 12:17:08 +02:00
Bananymous 0757834176 Kernel: Rewrite a lot of ext2 code 
This commit consists of multiple big changes

1. blocks for inodes are now allocated on demand
  - reading from non allocated block will just return zeroes
  - writing to non allocated block allocates it

2. code doesn't really use raw pointers anymore
  - all casts to uint32_t or structures are now replaced with
    spans. either as<T> or as_span<T> which both are bounds
	checked

3. code doesn't depend on random macros for accessing indirect blocks
  - i added some recursive functions which take care of this :)
 2023-10-28 22:13:28 +03:00
Bananymous 99bde9aa49 Kernel: Fix ext2 inode deletion cleanup 
I now cleanup all blocks (including direct) in i_block array
 2023-10-28 16:52:56 +03:00
Bananymous d09310f388 Kernel: Fix ext2 inode deletion 
fsck now reports clean filesystem even after deleting files
 2023-10-26 02:05:05 +03:00
Bananymous 74bfb930f2 Kernel/LibC: Add syscall and wrapper for unlink 2023-10-25 21:45:04 +03:00
Bananymous 091c5b6a66 BAN: Implement Ext2 file unlinking 
Ext2 inodes can now be unlinked from directories and after last
inode closes (destructor gets called) we check if link count is 0
and cleanup the inode from filesystem
 2023-10-25 21:43:36 +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 1f794e4ac0 Kernel: Implement directory creation for RamFS 2023-10-25 19:41:34 +03:00
Bananymous e85f9ac6a1 Kernel: Implement Ext2 directory creation 2023-10-25 19:37:04 +03:00
Bananymous 6ee5576dcc Kernel: Add Inode API for creating directories 2023-10-25 19:36:04 +03:00
Bananymous b890e2fc14 Kernel: Ext2FS now uses Ext2Inodes as cached values 2023-10-25 19:34:00 +03:00
Bananymous 15bb1804ef Kernel/LibC: implement chmod syscall + libc wrapper 2023-10-25 02:35:37 +03:00
Bananymous 00ee86920a Kernel: Add timeout to ACHI commands 
ACHI commands can now fail from timeouts.
 2023-10-24 11:56:25 +03:00
Bananymous 5bfeb9f3ca 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 be3efb0b92 Kernel: Start using multiboot2 instead of multiboot 
This allows better compatibility with (U)EFI and gives RSDP location
instead of me having to scan ram to find it.
 2023-10-17 01:06:24 +03:00
Bananymous 48980b56ab Kernel: ATABuses are but to compatibility mode if possible 
I don't support native mode ata bus (irq sharing) so ata buses are
but to compatibility mode if possible.
 2023-10-16 16:56:12 +03:00
Bananymous b767317a7a Kernel: Fix ATADevice naming 
ATADevice now stores its name instead of using static buffer. Old
static buffer was changing on every name query. I just hadn't noticed
since virtual machine disks were always sda.
 2023-10-16 16:52:15 +03:00
Bananymous 6f8fce94a0 Kernel: Fix PCI bugs 
IO BarRegion used vaddr instead of the correct paddr. Add API for
memory region iobase query.
 2023-10-16 16:50:49 +03:00
Bananymous 5977341610 Kernel: PCI checks if ethernet device is E1000 before initialization 
I used to treat all ethernet deivices as E1000 but now it is actually
verified before initialization
 2023-10-16 01:44:54 +03:00
Bananymous 76f17bd569 Kernel: PCIDevice stores its vendor id and device id 2023-10-16 01:44:54 +03:00
Bananymous dafc016293 Kernel: Clear TTY when setting as current 
Actually this should replace from old buffer, but this works
for now.
 2023-10-13 17:20:26 +03:00
Bananymous 6b180da4e8 Kernel: Separate scheduler execution and stack loading 
Not sure if this is actually needed, but this allows actual
executing function to be in clean environment
 2023-10-13 16:17:27 +03:00
Bananymous cf4f5f64a5 Kernel: add NEVER_INLINE and make Interruptable not constructable 2023-10-13 16:17:27 +03:00
Bananymous f842a9255f Kernel: Allow getting ACPI headers with same signature 2023-10-13 11:24:21 +03:00
Bananymous a2b5e71654 Kernel: Implement AHCI driver 
SATA drives can now be used with banan-os. This allows much faster
disk access (writing 10 MiB from 30s to 1.5s). This can definitely
be optimized but the main slow down is probably the whole disk
structure in the os.

AHCI drive is now the default when running qemu.
 2023-10-12 21:53:48 +03:00