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10873 commits 1 branch 0 tags 230 MiB
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35 commits

Author SHA1 Message Date
Sahan Fernando
0fc8931d5f Userland: Add watch tool 2020-06-30 12:46:23 +02:00
AnotherTest
880c3fb83f Userland: Add a 'test' utility 
This adds an incomplete implementation of the test util, missing some
user/group checks, and `-l STRING`.
It also symlinks '[' to 'test'.
 2020-06-27 16:08:52 +02:00
Tom Lebreux
605a21b892 Userland: Add base64 tool 2020-06-18 23:21:41 +02:00
Sergey Bugaev
fd985b1f48 Base: Document readlink(1) and readlink(2) :^) 2020-06-17 15:02:03 +02:00
Sergey Bugaev
4643f51eaa Base: Document find(1) 2020-06-06 14:42:31 +02:00
AnotherTest
ca6e361279 Base: Add manpage for xargs 2020-05-28 11:01:08 +02:00
Andres Vieira
cbbfc08f1d Docs: Add unzip(1) man page 2020-05-09 23:50:44 +02:00
Linus Groh
e37065cc8b Base: Update js(1) manpage 
Syntax highlighting is now enabled by default!
 2020-05-02 01:23:50 +02:00
Linus Groh
8f2300afb5 mkdir: Add -p option to create parent directories 2020-04-28 09:36:09 +02:00
Linus Groh
6fd7966d81 mkdir: Use ArgParser, support creating multiple directories 2020-04-28 09:36:09 +02:00
Linus Groh
440f017946 Base: Update js(1) manpage 
- Include all options
- Update example REPL session to match current output
- Mention REPL's help()
- Add test mode section
 2020-04-19 15:22:31 +02:00
Sergey Bugaev
15daf88e93 Base: Document open(1) 2020-04-19 11:14:26 +02:00
Sergey Bugaev
db4da68618 Base: Add a man page for js(1) 
This also changes --ast-dump to --dump-ast, because I like it better
and that is what the variable is actually called.
 2020-03-26 08:18:08 +01:00
howar6hill
83668299a6
host: Use ArgsParser to parse arguments, and add man page (#1252) 
Fixes #1246.
 2020-02-20 15:12:55 +01:00
howar6hill
94ed183774 Man: Use ArgsParser to parse arguments 2020-02-18 12:23:15 +01:00
Andreas Kling
4fa7146da1 Base: Move the modload and modunload command documentation to man8 
These are system administration commands, not intended for use by
all users. These tend to go in section 8.
 2020-01-02 12:37:19 +01:00
Andreas Kling
38f93ef13b Kernel: Disable x86 RDTSC instruction in userspace 
It's still possible to read the TSC via the read_tsc() syscall, but we
will now clear some of the bottom bits for unprivileged users.
 2020-01-01 18:22:20 +01:00
Andreas Kling
f598bbbb1d Kernel: Prevent executing I/O instructions in userspace 
All threads were running with iomapbase=0 in their TSS, which the CPU
interprets as "there's an I/O permission bitmap starting at offset 0
into my TSS".

Because of that, any bits that were 1 inside the TSS would allow the
thread to execute I/O instructions on the port with that bit index.

Fix this by always setting the iomapbase to sizeof(TSS32), and also
setting the TSS descriptor's limit to sizeof(TSS32), effectively making
the I/O permissions bitmap zero-length.

This should make it no longer possible to do I/O from userspace. :^)
 2020-01-01 17:31:41 +01:00
Andreas Kling
9c0836ce97 Kernel: Enable x86 UMIP (User Mode Instruction Prevention) if supported 
This prevents code running outside of kernel mode from using the
following instructions:

* SGDT - Store Global Descriptor Table
* SIDT - Store Interrupt Descriptor Table
* SLDT - Store Local Descriptor Table
* SMSW - Store Machine Status Word
* STR - Store Task Register

There's no need for userspace to be able to use these instructions so
let's just disable them to prevent information leakage.
 2020-01-01 13:21:15 +01:00
Shannon Booth
d0f9906c17 Crash: Add a "Test All Crash Types" option 
Add an option "-A", that will run all of the crash types in the crash
program. In this mode, all crash tests are run in a child process so
that the crash program does not crash.

Crash uses the return status of the child process to ascertain whether
the crash happened as expected.
 2019-12-31 02:14:36 +01:00
Andreas Kling
b0bbdc53e9 Base: Remove misplaced backtick in syscall(1) 2019-12-30 14:15:18 +01:00
Jami Kettunen
edba444aa9 Base: Add man page for keymap(1) 2019-12-30 14:02:00 +01:00
Andreas Kling
33efeaf71a crash: Add "-X" option for attempting to execute non-executable memory 2019-12-25 13:35:57 +01:00
Mauri de Souza Nunes
cb4e51a7a5 Userland: Add syscall -l option and man page 2019-12-24 20:23:37 +01:00
Conrad Pankoff
033de7efe2 Base: Describe kernel modules, syscalls, and programs 2019-12-24 11:52:01 +01:00
Andrés Vieira
488d755ccd Docs: Add cal(1) man page 2019-12-24 11:48:16 +01:00
Andreas Kling
f41ae755ec Kernel: Crash on memory access in non-readable regions 
This patch makes it possible to make memory regions non-readable.
This is enforced using the "present" bit in the page tables.
A process that hits an not-present page fault in a non-readable
region will be crashed.
 2019-12-02 19:18:52 +01:00
Andreas Kling
e56daf547c Kernel: Disallow syscalls from writeable memory 
Processes will now crash with SIGSEGV if they attempt making a syscall
from PROT_WRITE memory.

This neat idea comes from OpenBSD. :^)
 2019-11-29 16:30:05 +01:00
Andreas Kling
6fbe0f17f2 Docs: Add avol(1) 2019-11-22 21:52:52 +01:00
Andreas Kling
3d558f47b0 Docs: Add uname(1) and uname(2) man pages 2019-11-17 19:48:11 +01:00
Andreas Kling
189f234b47 Docs: Add info about -T and -t to crash(1) 2019-11-17 19:23:35 +01:00
Sergey Bugaev
8fbcfa934a Base: Add some "See also" links to the man pages 
We can do this now that we have link support in LibMarkdown and LibHTML ^)
 2019-10-03 08:23:54 +02:00
Larkin Nickle
3fb88cb76d Help+man.md: Add man sections 
Also correct minor formatting mistake in TelnetServer.md.
 2019-09-30 21:38:39 +02:00
Andreas Kling
dba74abe93 Base: Fix minor typos in man pages 2019-09-28 23:06:22 +02:00
Sergey Bugaev
fed96f455d Base: Write some initial man pages 
It ain't much, but it's honest work!
 2019-09-28 18:29:42 +02:00