37bb3273ce
Kernel: Add a C interface to the logging system
2022-11-12 18:12:18 +01:00
5c51b82f6a
Kernel: Remove obtain_user_ref and add copy_typed_to and from_user
2022-11-12 12:08:26 +01:00
58fb422161
Kernel: Return a Result in MemoryManager and strdup_from_user
2022-11-12 11:56:40 +01:00
662afad426
Kernel: Add a Result class
2022-11-12 11:30:28 +01:00
559d074ce4
Kernel: Make a more convenient wrapper for basename() and dirname()
2022-11-12 10:39:25 +01:00
d76af10e70
Kernel: Move initrd into the fs/ folder
...
It makes more sense to put it in there.
2022-11-09 16:03:16 +01:00
1ea216dfd1
Kernel: Rename assert.h to ensure.h
...
The macro is named "ensure", the header file should reflect that.
2022-11-09 15:28:35 +01:00
da7ad8da5b
Kernel: Show the file location when a check fails
2022-11-09 15:23:59 +01:00
033c41cbd7
Kernel: Rework the uid/gid system to make it compliant
2022-11-09 09:54:07 +01:00
98da473fdc
Run clang-format
2022-11-08 19:07:43 +01:00
6f72f92493
Kernel: Start preparing for recursive paging
2022-11-08 17:12:59 +01:00
5d94525c7a
Kernel: Figure out why a program is misbehaving
2022-11-06 18:12:25 +01:00
44815b08c7
Kernel: Use copy_from_user() and copy_to_user() in read/write
...
This is huge. Finally, we can do proper reads/writes with invalid addresses, or big buffers.
2022-11-06 15:19:23 +01:00
b63a9f5ba9
Kernel: Improve strdup_from_user and add copy to and from user
...
Still a bit funky, that's why we're not using it in read() and write() yet.
2022-11-05 11:54:55 +01:00
67f536cf91
Kernel: Split number-parsing code into a separate file
2022-11-05 10:50:58 +01:00
ffcaac0ca3
Kernel: Add validate_user_write() and validate_user_read()
...
Not at copy_from_user and copy_to_user yet, but an improvement over blindly using physical memory.
2022-11-04 22:46:48 +01:00
0fd31698b2
Kernel: Accept not opened file descriptors in dup2()
...
This involves renaming the descriptor_from_fd function to the more appropriately named
open_descriptor_from_fd (since we check if the descriptor was opened and error out otherwise),
and creating a new function that does not verify that the file descriptor was opened.
2022-11-03 16:52:21 +01:00
249c79f8a3
Kernel, libc: Add ioctl()
...
Right now, only the framebuffer supports this system call, to query its dimensions.
2022-11-02 20:59:42 +01:00
feab66c0d3
Kernel: Remove the paint() system call
...
That was a very old one from back in the old days. Now that the framebuffer is finally a device file,
and it can be memory-mapped by user programs for more performance,
this syscall is MORE than obsolete.
2022-11-02 20:35:06 +01:00
8f2308c80d
Kernel: Implement mmap-able device files (regular files are not mmap-able yet)
2022-11-02 20:24:07 +01:00
42a805fd60
Kernel: Move the translated keyboard to /dev/console and make /dev/kbd provide raw scancodes
2022-11-02 19:51:54 +01:00
c604c074a1
Kernel: Rename ASSERT() to ensure()
...
Doesn't get stripped on release builds, so it shouldn't be named assert.
2022-11-02 19:38:15 +01:00
e5cf32c7b3
Kernel: Introduce page ownership
...
Some pages, such as framebuffer pages, are not physical memory frames reserved for the current process.
Some, such as the framebuffer, may be shared between all processes.
Yet, on exit() or on exec(), a process frees all frames mapped into its address spaces.
And on fork(), it copies all data between frames. So how could we map framebuffers.
Simple: we use one of the bits in page table entries which are available to the OS, and mark whether that page is owned by the current process.
If it is owned, it will be:
- Freed on address space destruction
- Its data will be copied to a new page owned by the child process on fork()
If it is not owned, it will be:
- Left alone on address space destruction
- On fork(), the child's virtual page will be mapped to the same physical frame as the parent
This still needs a bit more work, such as keeping a reference of how many processes use a page to free it when all processes using it exit/exec.
This should be done for MAP_SHARED mappings, for example, since they are not permanent forever,
unlike the framebuffer for example.
2022-11-02 19:32:28 +01:00
22740e69bf
Kernel: Add support for the NX bit
...
Not support, actually. We now REQUIRE it.
2022-11-02 18:34:57 +01:00
c2a08060cf
VFS: Add support for an implementation-defined value
2022-10-30 20:53:45 +01:00
52d4f34f05
Kernel, libc: Implement umask()
2022-10-30 19:55:38 +01:00
29c59abf7d
Kernel: Rename blocking_wait_info's wait_pid to pid
2022-10-30 19:28:43 +01:00
e244c150c2
Kernel, libc: Add ECHILD
2022-10-30 19:24:26 +01:00
af0f4d2037
Kernel: Remove /dev/uptime
...
This information can now be fetched with clock_gettime.
2022-10-30 10:16:53 +01:00
e640c6e245
Kernel, libc, userspace: Add file timestamps (atime,ctime,mtime)
2022-10-30 09:57:17 +01:00
688a640a16
Kernel: Add the clock_gettime syscall, which replaces clock as it can be used for more stuff
2022-10-30 09:07:59 +01:00
baf97840e9
Kernel: Keep track of boot time
2022-10-30 09:07:03 +01:00
e05f3f5325
Kernel: Read file modes from the initrd, filtering out write permissions
2022-10-28 20:52:10 +02:00
1c4f1ab867
Kernel, libc: Add setuid() and setgid() system calls
2022-10-28 17:19:26 +02:00
26b20938de
Kernel, libc: Use mode in mkdir()
2022-10-28 17:11:35 +02:00
0115cce750
Kernel/VFS: Add file owners and file modes, and check those in system calls
2022-10-28 17:10:28 +02:00
16dc227a05
Kernel: Add UID and GID fields to Task
2022-10-28 17:06:13 +02:00
3effe8b004
Kernel: Add EACCES to std/errno.h
2022-10-28 17:02:27 +02:00
50cda50f01
Kernel, libc: Add F_GETFD, F_SETFD and FD_CLOEXEC
2022-10-27 17:17:24 +02:00
fcf53ef6a5
Kernel: Make waitpid() block by default unless WNOHANG is specified
2022-10-27 17:05:42 +02:00
1c35eabb2b
open(): Add a third optional mode argument
2022-10-27 07:52:57 +02:00
7d20c507b1
Kernel, libc, userspace: Implement command-line arguments (argv)
...
The only thing missing now is for sh to pass them on.
2022-10-26 18:57:06 +02:00
af452e2b2a
Kernel, libc: Add dup2()
2022-10-25 18:58:06 +02:00
af46b8d9ac
Kernel: Cleanup file descriptor validation
2022-10-25 18:35:17 +02:00
ec2c314234
Kernel: Add /dev/null
2022-10-25 17:59:55 +02:00
0dec5f7bad
libc: Add dummy getcwd()
2022-10-24 17:05:28 +02:00
58b01b74e2
Kernel, libc: Add stat()
2022-10-23 18:35:32 +02:00
8bf2904d74
libc: Implement a basic subset of dirent.h
2022-10-23 14:41:45 +02:00
14367f07b5
Kernel: Add support for getdents() to DeviceFS
2022-10-23 14:05:55 +02:00
78d72c2f0c
Kernel, libc: Add a getdents() system call
...
This is meant to be a low-level interface to implement dirent.h on top of.
2022-10-23 14:03:46 +02:00
