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973 Commits 1 Branch 0 Tags 3.9 MiB
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973 Commits

Author SHA1 Message Date
Bananymous 16e5f96b1d BAN: Add operator-> and operator* to Optional 2023-06-12 22:25:14 +03:00
Bananymous d0a0e3bdef Userspace: Add u8sum 
This program caluculates the sum of bytes in file mod 256
 2023-06-12 20:36:16 +03:00
Bananymous 5dcc53bcf2 Kernel: Make disk IO blocking thread safe 
This was causing a lot of deadlocks on vms without kvm accel
 2023-06-12 18:57:47 +03:00
Bananymous 23543b15ca Kernel: Rework syscall calling 
I removed the intermediate function when calling syscalls. Now syscall
handler calls the current process automatically. Only exception is
sys_fork, since it needs a assembly trampoline for the new thread.
 2023-06-12 14:16:48 +03:00
Bananymous 2253c45feb Kernel: Remove Shell from kernel 
This is now obsolete since we have a userspace Shell.
 2023-06-12 02:04:52 +03:00
Bananymous 9f9a70713e Base: add home directories for root and user 2023-06-12 02:03:13 +03:00
Bananymous cd57adc856 BuildSystem: every file except /home/* is now owned by root 2023-06-12 02:03:13 +03:00
Bananymous b4b892148c Userspace: Shell processes PS1 '\~' as cwd and implement cd 2023-06-12 02:03:13 +03:00
Bananymous 048183ddb5 Userspace: init now sets HOME environment variable and cd's into HOME 2023-06-12 02:02:52 +03:00
Bananymous f09b82c4b5 Kernel/LibC: add SYS_{SET,GET}_PWD and chdir, getpwd 2023-06-12 02:02:52 +03:00
Bananymous 7aeb8e4d36 Kernel: allocate thread stacks from 0x300000 onwards 
I had a problem where thread stack was overlapping with elf loading
 2023-06-12 01:02:19 +03:00
Bananymous 58ec4d6a31 Kernel: Fix bug in elf loading 
We were allocating one extra page
 2023-06-12 00:59:19 +03:00
Bananymous 25f8343269 Userspace: init now default logins as user 2023-06-12 00:46:07 +03:00
Bananymous e9cb844c28 Userspace: Shell now uses PS1 as prompt if set 2023-06-12 00:45:47 +03:00
Bananymous 30ac046232 Userspace: Add color to ls 2023-06-11 23:00:19 +03:00
Bananymous f67f8ccbe0 Userspace: init now sets user and group ids before running their shell 2023-06-11 22:37:00 +03:00
Bananymous e9217b3484 Userspace: Add basic id that prints {,e}{uid,gid} of the current proc 2023-06-11 22:37:00 +03:00
Bananymous 11b68f6a53 Kernel: Add SYS_GET_{,E}{UID,GID} 2023-06-11 22:37:00 +03:00
Bananymous 3fe67e4882 Kernel: Add syscalls for set{,e,re}{uid,gid} 2023-06-11 22:37:00 +03:00
Bananymous 9288537949 LibC: gid_t and id_t are now signed types 
I have no idea why I had made them unisigned
 2023-06-11 22:37:00 +03:00
Bananymous 78536f9678 Kernel/Userspace: Add basic init process 
This process parses /etc/passwd and promps login screen.
When an username is entered, it will launch that users shell
 2023-06-11 22:37:00 +03:00
Bananymous cce2f3e19a BAN: Add basic Optional 2023-06-11 21:00:25 +03:00
Bananymous 297141f321 LibC: add strchrnul() 
this is a gnu libc extension
 2023-06-11 20:18:03 +03:00
Bananymous c7ec19c25c Kernel: Add basic Credentials for the system 
Now filesystem access/open, etc confirm that you have access for rwxs
 2023-06-11 20:06:06 +03:00
Bananymous 3181ea7b4d 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 1cf464d5c7 Userspace: add basic ls command 2023-06-11 03:38:44 +03:00
Bananymous 83a6e6f637 LibC: Reorder some syscalls 2023-06-11 03:29:22 +03:00
Bananymous 64890bb640 Kernel: Add SYS_OPENAT 2023-06-11 03:29:22 +03:00
Bananymous caca6dc701 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 68ec443e07 LibC: implement close 2023-06-11 03:29:22 +03:00
Bananymous aa86125f2b Kernel: Implement SYS_FSTAT 2023-06-11 03:29:22 +03:00
Bananymous c423164066 LibC: Implement basic dirent functionality 
We don't currently support seeking
 2023-06-11 03:29:22 +03:00
Bananymous 14aeb8de10 Kernel: we don't panic anymore on unrecognized syscall 2023-06-11 00:18:48 +03:00
Bananymous 691b17e0cc Kernel: allow open() call with O_SEARCH 2023-06-11 00:18:34 +03:00
Bananymous eae6119039 Kernel: Add syscall for reading directory entries 2023-06-11 00:18:08 +03:00
Bananymous 30f81e1696 LibC: add missing O_EXEC and O_SEARCH 2023-06-11 00:17:18 +03:00
Bananymous 01311b470f Kernel: Rewrite directory listing so it can be integrated to libc 2023-06-11 00:17:18 +03:00
Bananymous 223d2ac3a6 Userspace: fix return values of cat and echo 2023-06-10 17:34:10 +03:00
Bananymous 4cdeb98897 Kernel: We now store the processes exit code 2023-06-10 17:31:56 +03:00
Bananymous 47c69e9def Userspace: add exit to shell 2023-06-09 01:51:23 +03:00
Bananymous 9728947d5d Userspace: add echo 2023-06-09 01:50:18 +03:00
Bananymous 66fe48e94b Userspace: add ^L support for shell 2023-06-09 01:24:33 +03:00
Bananymous c0fe4756cb 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 5032e79be3 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 1aec3fcedd 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 aec63081e2 Kenrel: Rename Scheduler::reschedule -> Scheduler::timer_reschedule 2023-06-09 00:41:43 +03:00
Bananymous 801025ad7b 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 59b10c4d25 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 841584ccbd 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 24993f6020 LibC: implement setenv, unsetenv, putenv 2023-06-05 22:51:02 +03:00