Bananymous/banan-os
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Author SHA1 Message Date
Bananymous
147cd93ed3 Kernel: Add method to TmpFS for looping over all (cached) inodes 2023-11-07 16:04:34 +02:00
Bananymous
07b5920f3f Kernel: Lock TmpFS in all its methods 2023-11-07 16:03:52 +02:00
Bananymous
2bcf934389 Kernel: Implement symlinks to TmpFS 2023-11-07 15:59:50 +02:00
Bananymous
1405712f26 Kernel: Make PS/2 keyboard wait until interrupts are enabled 2023-11-07 15:58:50 +02:00
Bananymous
a8ffe6b3a6 BuildSystem: Fix temporary sysroot creation in toolchain compilation 2023-11-07 14:16:49 +02:00
Bananymous
613d6640fe meminfo: better format for files without permissions 2023-11-07 02:41:01 +02:00
Bananymous
885ed218fa Kernel: Make unlinking from /proc always fail with EPERM 2023-11-07 02:40:27 +02:00
Bananymous
b1f431d962 Kernel: /tmp is now TmpFS instead of RamFS 2023-11-07 02:36:22 +02:00
Bananymous
06e176e6b9 Kernel: Make ProcFS use the new TmpFS internally 2023-11-07 02:35:44 +02:00
Bananymous
b7771e95ac Kernel: Implement TmpFS Inode unlinking and deletion 2023-11-06 21:49:12 +02:00
Bananymous
3e33fc156b Kernel: TmpFS directory inodes now iterate over only valid entries 2023-11-06 21:41:51 +02:00
Bananymous
438f01a856 Kernel: Fix TmpFS directory entry enumeration early return 2023-11-06 21:06:10 +02:00
Bananymous
5dd8189048 Kernel: Fix ext2 directory listing for big directories 2023-11-06 21:05:58 +02:00
Bananymous
ff6b127c3a Kernel: Implement TmpFS directory listing 2023-11-06 21:05:58 +02:00
Bananymous
c3ed700324 Kernel: Implement TmpFS inode chmod 2023-11-06 20:11:34 +02:00
Bananymous
ba2f09a4e6 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
c92c1b8e2b Kernel: TmpInode blocks are on demand allocated 2023-11-06 10:44:37 +02:00
Bananymous
c27d20abd8 Kernel: Implement read/write/truncate for TmpFileInode 2023-11-05 02:28:43 +02:00
Bananymous
99d7b0917d Kernel: Start work on proper TmpFS in Heap instead of kmalloc memory 2023-11-04 18:18:45 +02:00
Bananymous
8b4e129fc1 Kernel: Add better APIs for fast page 2023-11-04 18:13:16 +02:00
Bananymous
240d57f4b4 BAN: Update bytespan -> span API 2023-11-04 18:12:46 +02:00
Bananymous
f6c312a6b3 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
ca34ece8ef BAN: Update ASSERT api 
its now much harder to mix < with <= and > with >=
 2023-11-02 00:01:12 +02:00
Bananymous
71ecdd7245 Kernel: Canonicalize vaddr before using it 2023-10-30 19:20:17 +02:00
Bananymous
b80b59ce24 Kernel: Remove unused externs in kernel.cpp 2023-10-30 19:09:31 +02:00
Bananymous
640d27748f Kernel: Temporarily force FileBackedRegion mappings writable 
Now that write-protect bit is enabled this is neccessary.
 2023-10-30 19:08:33 +02:00
Bananymous
42772611ce 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
6e676ee8c5 Kernel: Remove GeneralAllocator since it was not used 2023-10-30 18:13:17 +02:00
Bananymous
066fb44105 Kernel: Allow offsetof with packed fields 
This is not standard C++ but should be fine with my toolchain.
 2023-10-30 17:51:18 +02:00
Bananymous
3f638f125e Kernel: panic takes arguments as rvalue references 2023-10-30 16:22:02 +02:00
Bananymous
35f8f44510 Kernel: Fix ext2 small link deallocation 
Also fix deallocation bug
 2023-10-30 16:22:02 +02:00
Bananymous
0c590821ed Kernel: only map kernel from g_kernel_start onwards 2023-10-30 16:22:02 +02:00
Bananymous
3c311efb81 BAN: Implement better ASSERT macros 
Implement macros for all basic binary ops. These macros print failed
values when the fail.
 2023-10-30 16:22:02 +02:00
Bananymous
6ef153b6ca Kernel: Enable Write Protect. This seems to be good for security 2023-10-30 12:23:22 +02:00
Bananymous
130a69bac6 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
b5d873dfae Kernel/LibELF: Map pages always as RW so kernel can write to them 
Kernel doesn't seem to require W permissions to a page without UEFI
so this had not been found earlier.
 2023-10-30 12:14:12 +02:00
Bananymous
d5e0900cbb BAN: String now uses union for its sso storage 
This allows String to shrink by 8 bytes since Variant's 8 index is
no longer stored in here.

This required me to make Strings max size one bit less, but that
should still be fine. There should never be strings with size of
over half of the computer's address space.
 2023-10-30 11:13:16 +02:00
Bananymous
a63006afaf Userspace: Add quick test for global ctors and dtors 2023-10-30 11:11:10 +02:00
Bananymous
7c6832cee4 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
0b5fcb3f88 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
f33c0bad99 Toolchain: Clone GCC and Binutils from git 
This feels much cleaner than just downloading tar balls from
pregiven urls. Also patching works much better like this!

I added --disable-initfini-array since global constructors were
not called.
 2023-10-30 11:02:57 +02:00
Bananymous
18f61c5427 Kernel: Fix ACPI DSDT address 
Read x_dsdt address only if fadt's length contains it. Bochs seems
to have version 1 fadt without the x_* fields.
 2023-10-29 21:35:11 +02:00
Bananymous
229082a1b2 BAN: Rewrite String with small string optimizations 
String now holds a 15 byte sso buffer. I'm not sure what the size
should actually be but 15 will work for now. Maybe the sso buffer
should be contained in an union with one bit flag in size instead of
variant that uses extra 8 bytes for type index.

This patch buffs sizeof(String) from 24 bytes to 32 bytes on 64 bit.
I assume this is much better version than the old which had to make
allocation even for empty strings :D.
 2023-10-29 03:11:13 +03:00
Bananymous
0db17e9d39 BAN: Add variant to ForwardList 
I should be using the forward list more
 2023-10-29 02:28:55 +03:00
Bananymous
2d34b2b8a3 BuildSystem: Add bos short hand for building with zsh completions :) 2023-10-28 22:23:29 +03:00
Bananymous
76f48f095c 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
d98f84f9d3 BAN: Update ByteSpan API 
Add ByteSpan::as_span<T> and const versions of as() and as_span()
require T to be const.
 2023-10-28 22:10:47 +03:00
Bananymous
240a687d8f Kernel: Fix ext2 inode block allocation with triply indirect blocks 2023-10-28 16:53:00 +03:00
Bananymous
35b46e37bb 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
14d24bce98 All: Remove read only from ext2 filesystem :) 2023-10-26 13:26:10 +03:00