Bananymous/banan-os
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Author SHA1 Message Date
Bananymous
46c34db6cb Kernel: GeneralAllocator and FixedWidth allocator invalidate TLB caches 
We were getting random exceptions when reallocating same addressess and
this fixes that problem :)
 2023-06-11 15:57:48 +03:00
Bananymous
25a2a4879c Userspace: add basic ls command 2023-06-11 03:38:44 +03:00
Bananymous
8be28012ee LibC: Reorder some syscalls 2023-06-11 03:29:22 +03:00
Bananymous
5aed186827 Kernel: Add SYS_OPENAT 2023-06-11 03:29:22 +03:00
Bananymous
91f812e17f Kernel: Exceptions will now enable interrupts before calling exit() 
this allows scheduler verification on reschedule() not panic
 2023-06-11 03:29:22 +03:00
Bananymous
f0b22c48b2 LibC: implement close 2023-06-11 03:29:22 +03:00
Bananymous
52c4eebd77 Kernel: Implement SYS_FSTAT 2023-06-11 03:29:22 +03:00
Bananymous
24f0d26fce LibC: Implement basic dirent functionality 
We don't currently support seeking
 2023-06-11 03:29:22 +03:00
Bananymous
825ec221b7 Kernel: we don't panic anymore on unrecognized syscall 2023-06-11 00:18:48 +03:00
Bananymous
e31080bce3 Kernel: allow open() call with O_SEARCH 2023-06-11 00:18:34 +03:00
Bananymous
7a5d5cabad Kernel: Add syscall for reading directory entries 2023-06-11 00:18:08 +03:00
Bananymous
f7de310889 LibC: add missing O_EXEC and O_SEARCH 2023-06-11 00:17:18 +03:00
Bananymous
e209ca7c82 Kernel: Rewrite directory listing so it can be integrated to libc 2023-06-11 00:17:18 +03:00
Bananymous
ee8de77a90 Userspace: fix return values of cat and echo 2023-06-10 17:34:10 +03:00
Bananymous
db49cbd6e2 Kernel: We now store the processes exit code 2023-06-10 17:31:56 +03:00
Bananymous
e001eecb7b Userspace: add exit to shell 2023-06-09 01:51:23 +03:00
Bananymous
7f34d00c95 Userspace: add echo 2023-06-09 01:50:18 +03:00
Bananymous
2c18adbddd Userspace: add ^L support for shell 2023-06-09 01:24:33 +03:00
Bananymous
97c7fc42d1 Kernel: SpinLocks now reschedule if they cannot aquire the lock 
This allows us to not actually spin doing nothing while waiting for
another (not executing) to release the lock. This api won't probably
work when we get to SMP
 2023-06-09 00:53:32 +03:00
Bananymous
7da0627f8e Kernel: Process::exit() now uses the new Scheduler::reschedule() 
We use this new function while waiting for all blocking threads to
resume execution
 2023-06-09 00:49:19 +03:00
Bananymous
27cef23823 Kernel: Scheduler now has reschedule() 
This can be called from anywhere and just causes the scheduler to
schedule the next thread. This is more efficient and verbose version
of Scheduler::set_current_thread_sleeping(0), since we don't have
to wake other threads or do other verifications.
 2023-06-09 00:47:17 +03:00
Bananymous
b7fc2dc3d0 Kenrel: Rename Scheduler::reschedule -> Scheduler::timer_reschedule 2023-06-09 00:41:43 +03:00
Bananymous
8af390e0f6 Kernel: Big commit. Rewrite ELF loading code 
We now load ELF files to VirtualRanges instead of using kmalloc.
We have only a fixed 1 MiB kmalloc for big allocations and this
allows loading files even when they don't fit in there.

This caused me to rewrite the whole ELF loading process since the
loaded ELF is not in memory mapped by every process.

Virtual ranges allow you to zero out the memory and to copy into
them from arbitary byte buffers.
 2023-06-09 00:37:43 +03:00
Bananymous
96d6453ea8 Kernel: PageTableScope locks the PageTable before disabling interrupts 
This allows replacing some PageTableScopes with PageTable::lock()
 2023-06-09 00:34:41 +03:00
Bananymous
2b9900e56e Kernel: get_free_contiguous_pages works with non-page aligned addresses 
also fix bug in ordering
 2023-06-06 02:03:23 +03:00
Bananymous
86f58f60cb LibC: implement setenv, unsetenv, putenv 2023-06-05 22:51:02 +03:00
Bananymous
064ce568c2 Kernel: add basic support for environment variables 
exec functions will search files from PATH
 2023-06-05 22:51:02 +03:00
Bananymous
6aff459e1c BAN: add StringView::contains(char) 2023-06-05 22:51:02 +03:00
Bananymous
0b1b4d8f7e Kernel: exec now has better posix errors 2023-06-05 21:12:08 +03:00
Bananymous
3fc2c3529a Shell: load old termios for process execution 2023-06-05 21:12:08 +03:00
Bananymous
b0e9ab0519 Kernel/LibC: pass environ pointer to process 2023-06-05 21:12:08 +03:00
Bananymous
668517a723 Kernel: TTY now actually flushes on ^D 2023-06-05 20:21:46 +03:00
Bananymous
649f08ec78 Kernel: verify that loaded elfs are executable 2023-06-05 19:29:32 +03:00
Bananymous
2f2c298c68 Shell: add bareboness utf8 support 
This should work as long as TTY provides only valid utf8.
If the utf is invalid, assertion fails and the shell dies.
 2023-06-05 18:55:22 +03:00
Bananymous
90e48970e6 Shell: we now support left/right arrows 2023-06-05 18:24:41 +03:00
Bananymous
480842a203 LibC: abort now prints 'abort()' and exits 
we used to call assert in abort which then recursively called
abort again.
 2023-06-05 18:23:19 +03:00
Bananymous
5425394880 Kernel: TTY now supports CSI s and u 
These are commonly supported values to save and load cursor
position
 2023-06-05 18:19:13 +03:00
Bananymous
a365813fa9 BuildSystem: disable nls from gcc 2023-06-05 17:55:47 +03:00
Bananymous
9d64dbd5c2 Kernel/LibC: add SYS_STAT and stat(), lstat() 2023-06-05 14:37:14 +03:00
Bananymous
30bb61a775 Base: revert bin and lib symlinks to relative paths 
Absolute paths fucked up toolchain building and usespace linking,
since g++ was finding host libraries from /usr/lib.
 2023-06-05 10:08:01 +03:00
Bananymous
1f36ed0cf9 Userspace: Start work on proper shell 2023-06-05 01:42:57 +03:00
Bananymous
d54c76f88a Base: /lib and /bin are now absolute symlinks 2023-06-04 18:12:05 +03:00
Bananymous
cbb9f47ee5 LibC: add wait and waitpid 
Note that wait() doesn't work since only waiting for specified
pid is supported. wait() will just return -1 and set errno to
ECHILD.
 2023-06-04 18:00:52 +03:00
Bananymous
b68d5a5833 Kernel: Add SYS_WAIT 
This syscall waits for a given pid.
 2023-06-04 18:00:52 +03:00
Bananymous
94d2090777 Kernel: fork() now clones current thread 
This is how posix specifies thread cloning during fork
 2023-06-04 17:40:37 +03:00
Bananymous
e97585daf9 Kernel: Process FixedWidthAllocators come now in 4 sizes 2023-06-04 01:26:43 +03:00
Bananymous
924fc2118c Kernel: Allocators are now stored in UniqPtr 
This allows proper memory management, we had some memory leak
 2023-06-04 01:25:57 +03:00
Bananymous
51f4c0c750 Kernel: make load_elf() its own function 2023-06-04 01:24:11 +03:00
Bananymous
37b93da650 Kernel: PhysicalRange maps its nodes to kernel vaddr space 
This keeps the lower half of address space cleaner
 2023-06-04 01:20:47 +03:00
Bananymous
35e739dcdd Kernel: reorder process exit steps 2023-06-04 01:19:04 +03:00