2230ebd969
Wrap math.h around builtins
2022-11-06 21:37:00 +01:00
472192bcf2
libc: Define LC_NUMERIC
2022-11-06 20:47:16 +01:00
78ee6ce34a
libc: Stub out scanf()
2022-11-06 20:47:07 +01:00
c9e20fd38e
Why are there so many errno values
2022-11-06 20:46:34 +01:00
2eeef9581f
libc: Add strxfrm()
2022-11-06 19:56:36 +01:00
2e9348181d
Tests: Add tests for strcmp() and strncmp()
2022-11-06 19:51:56 +01:00
5d94525c7a
Kernel: Figure out why a program is misbehaving
2022-11-06 18:12:25 +01:00
c6ce7a5358
libc: Add bsearch (with a test!!)
2022-11-06 17:34:35 +01:00
1025248cc7
libc: Add qsort (with a test!!)
2022-11-06 17:16:08 +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
04ae97a6ec
libc: Add difftime()
2022-11-06 15:09:38 +01:00
2980ee3973
libc: Make fread() and fwrite() less awkward
2022-11-06 14:53:05 +01:00
88011fc162
init: Use fread() properly
2022-11-06 14:52:50 +01:00
40b078e0a2
libc: Make fread/fwrite return the number of items read/written instead of the number of bytes
2022-11-06 14:46:22 +01:00
d7692a7f59
libc: Rename fold() to lowercase() in strcasecmp and strncasecmp
2022-11-06 14:45:58 +01:00
da182f1c2f
libc: Add mktemp() and mkdtemp(), along with a test for mktemp
2022-11-05 18:07:45 +01:00
b2fb740d99
Kernel: Refuse to mkdir any directory named . or ..
2022-11-05 12:09:01 +01:00
b78f6f269d
Kernel: Omit displaying KernelHeap's buffer location in the log
2022-11-05 11:59:00 +01:00
cedefaf93d
libc: Exit with -errno if we fail initialization
2022-11-05 11:56:31 +01:00
9ab3ab7c40
Kernel: Show init's exit status before restarting
2022-11-05 11:56:16 +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
d0efc106b0
Kernel: Add UBSAN (Undefined Behaviour Sanitizer)
2022-11-05 10:47:18 +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
cbc2e76082
Remove the .elf suffix from the kernel filename
2022-11-03 20:44:37 +01:00
e5b2641019
Kernel: Enforce W^X when loading executables
...
From now on, if an executable contains segments that
want to be loaded as both writable and executable,
we refuse and abort with ENOEXEC.
2022-11-03 20:28:54 +01:00
2c08de044f
Kernel, libc: Add support for querying the framebuffer's scanline via ioctl()
2022-11-03 20:20:22 +01:00
71633e264f
Kernel: Make the serial port writable for everyone :)
2022-11-03 17:13:32 +01:00
979569eb5a
Ports: Refactor the NASM port's package script a bit
2022-11-03 17:06:27 +01:00
3b86f87c76
libc: Support %i in printf()
...
Which is the same as %d.
2022-11-03 16:53:19 +01:00
2cfefc25cc
libc: Stub out rename()
2022-11-03 16:52:41 +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
7afbff08b6
apps: Add a little screen utility
...
It tells you the resolution of your screen :)
2022-11-02 21:00:23 +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
875d971d3b
Tools: Make list-ports.sh exit when ports.list does not exist
2022-11-02 18:53:47 +01:00
dfcc827103
libc: Add PROT_EXEC
2022-11-02 18:40:05 +01:00
07e518c38f
Kernel: Make sys_mmap log the correct prot value
2022-11-02 18:39:58 +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
534500cda0
Implement enough runtime for binutils to compile
2022-10-31 12:29:53 +01:00
497a52dd82
apps: add a little mkdir utility
2022-10-31 09:53:52 +01:00
c2a08060cf
VFS: Add support for an implementation-defined value
2022-10-30 20:53:45 +01:00
5eae93bbb0
Bugfix: do not crash if we are blocking for no reason
2022-10-30 20:51:32 +01:00
aabff7a1d3
libc: Add mktime()
2022-10-30 20:46:25 +01:00
45f40a31d6
Remove old FIXME
2022-10-30 20:40:53 +01:00
f83c78bcad
libc: Implement gettimeofday() and instantly mark it as deprecated
2022-10-30 20:40:05 +01:00
