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Author SHA1 Message Date
Ben Wiederhake
c436c3e13d Toolchain: Remove unnecessary file from commit 
This file is never read by gcc, and the filename looks like it was never meant to be added.
 2021-03-11 12:32:53 +01:00
Ben Wiederhake
f38a6b18b5 crash: Fix more typos in check logic 
These caused no test to run for '-f' and mmap to fail, respectively.
 2021-03-11 12:32:53 +01:00
Ben Wiederhake
798dea7a49 crash: Fix typo in check logic 
The remainder of the code assumes that the mmap was successful,
so the 'unexpected error' case is that we see MAP_FAILED.
 2021-03-11 12:32:53 +01:00
Ben Wiederhake
bceb98e2df Userland: Remove superfluous headers 
Userland has no reason to access 'kmalloc'.
 2021-03-11 12:32:53 +01:00
Ben Wiederhake
2cd0793578 xargs: Fix boring memory leak 
It's only 1K (BUFSIZ), and it's immediately before xargs finishes anyway.
However, I ran into it and know how to fix it, so let's clean this up.
 2021-03-11 12:32:53 +01:00
Ben Wiederhake
292871c4bc UserspaceEmulator: Handle MAP_FIXED with invalid addresses better 
Old behavior: Crash due to VERIFY, unless we're completely and entirely out of
memory (m_available_ranges being empty), in which case it would return -ENOMEM.

New behavior: Return ENOMEM (and don't crash). In the case of nullptr,
also emit a helpful diagnostic.

Note that MAP_FIXED with nullptr is technically okay, but tends to be a sign
that something went wrong.

Also, this should improve mmap performance marginally, as it pulls the check out
of a loop that does not modify any parts of the check.

UE is now self-hosting! Fixes #5709.

However, this still needs some love: "ue UserspaceEmulator true" spits out tons
of error messages, probably false-positives, and takes about 229 seconds to run.
Then again, true-in-ue-in-ue-in-Qemu is three levels of emulation, so no wonder
it takes a long time! :D
 2021-03-11 08:54:54 +01:00
Ben Wiederhake
22d9bd0c45 UserspaceEmulator: Do not pass MAP_FIXED to Kernel 
Since there is usually no correlation between guest memory-layout and UE memory-layout,
this option does not make any sense. Especially since we provide nullptr.
 2021-03-11 08:54:54 +01:00
Ben Wiederhake
d5925f33aa UserspaceEmulator: Implement set_process_name syscall 2021-03-11 08:54:54 +01:00
Ben Wiederhake
ec8e3edd05 UserspaceEmulator: Split large file into logical pieces 2021-03-11 08:54:54 +01:00
Luke
4477a0d6fd LibWeb: Remove FIXME in is_javascript_mime_type_essence_match 
This was misleading. The spec just wants us to check a string matches
a string in the JavaScript MIME type essence list. It doesn't want us
to parse the string as a MIME type to then use its essence for the
check.

Renames "mime_type" to "string" to make this less misleading.
 2021-03-11 08:30:02 +01:00
Tom
929c90f8c8 Meta: Add gdb command to serenity.sh 
This uses tmux for a split screen setup, which makes it easy do debug
the kernel while viewing the QEMU output in the same terminal.
 2021-03-11 08:29:23 +01:00
Andreas Kling
de6c5128fd Kernel: Move process pledge promises into protected data 2021-03-10 22:50:00 +01:00
Andreas Kling
37ad880660 Kernel: Move process "dumpable" flag into protected data 2021-03-10 22:42:07 +01:00
Andreas Kling
3d27269f13 Kernel: Move process parent PID into protected data :^) 2021-03-10 22:30:02 +01:00
Andreas Kling
d677a73b0e Kernel: Move process extra_gids into protected data :^) 2021-03-10 22:30:02 +01:00
Andreas Kling
cbcf891040 Kernel: Move select Process members into protected memory 
Process member variable like m_euid are very valuable targets for
kernel exploits and until now they have been writable at all times.

This patch moves m_euid along with a whole bunch of other members
into a new Process::ProtectedData struct. This struct is remapped
as read-only memory whenever we don't need to write to it.

This means that a kernel write primitive is no longer enough to
overwrite a process's effective UID, you must first unprotect the
protected data where the UID is stored. :^)
 2021-03-10 22:30:02 +01:00
Andreas Kling
839d2d70a4 Kernel: Add non-const KBuffer::impl() getter 2021-03-10 22:30:02 +01:00
Andreas Kling
a77ecac900 fuzz-syscalls: Mark sys$emuctl() as someone who returns ENOSYS 
This syscall is only relevant inside UserspaceEmulator and the kernel
will just return ENOSYS for it.
 2021-03-10 16:36:11 +01:00
Andreas Kling
9b5c9efd73 Kernel: Build with -Wvla 
Now that all use of VLA's (variable-length arrays) has been purged from
the kernel, let's make sure we don't reintroduce them.
 2021-03-10 16:33:55 +01:00
Andreas Kling
e58a600d52 Kernel: Remove VLA usage in Ext2FS block traversal code 
This was using up to 12KB of kernel stack in the triply indirect case
and looks generally spooky. Let's just allocate a ByteBuffer for now
and take the performance hit (of heap allocation). Longer term we can
reorganize the code to reduce the majority of the heap churn.
 2021-03-10 16:33:47 +01:00
Andreas Kling
3dbb9c8448 Kernel: Turn a VLA into a statically-sized array in dump_backtrace() 2021-03-10 16:23:11 +01:00
Andreas Kling
ced8dfa037 UserspaceEmulator: Remove debug spam about tracked malloc blocks 2021-03-10 15:21:26 +01:00
Brendan Coles
0e18c7ffda Documentation: Add Serenity installation guide for VMware 2021-03-10 11:59:32 +01:00
Andreas Kling
54f6436598 Kernel: Convert klog() => dmesgln() in TCPSocket 2021-03-09 23:06:47 +01:00
Andreas Kling
b007bc07b7 Kernel: Convert klog() => dmesgln() in MemoryManager 2021-03-09 22:44:04 +01:00
Andreas Kling
232738fb7a Kernel: Use dbgln_if() and PANIC() in Thread.cpp 2021-03-09 22:35:51 +01:00
Andreas Kling
c67d550df1 Kernel: Convert klog() => dmesgln() in IPv4Socket 2021-03-09 22:25:09 +01:00
Andreas Kling
b12734cf13 Kernel: Convert klog() => dmesgln() in PageDirectory 2021-03-09 22:10:41 +01:00
Andreas Kling
65131334e7 Kernel: Convert klog() => dmesgln() in E1000NetworkAdapter 2021-03-09 22:10:41 +01:00
Andreas Kling
c8a8923842 Kernel: Convert klog() => dmesgln() in init() 2021-03-09 22:10:41 +01:00
Andreas Kling
ac1c01cc30 Kernel: Convert klog() => dmesgln() in ARP/routing code 2021-03-09 22:10:41 +01:00
Andreas Kling
aef6474ea7 Kernel: Convert klog() to dmesgln() in Region 2021-03-09 22:10:41 +01:00
Andreas Kling
4d30166d61 AK: Add Formatter for RefPtr 2021-03-09 22:10:41 +01:00
Andreas Kling
07564577c0 Kernel: Convert klog() => dmesgln() in AnonymousVMObject 2021-03-09 22:10:41 +01:00
Andreas Kling
db0bca4153 Kernel: Convert klog() => dmesgln() in HPET 2021-03-09 22:10:41 +01:00
Andreas Kling
ed8d68d8fe Kernel: Convert klog() => dmesgln() in KernelRng 2021-03-09 22:10:41 +01:00
Andreas Kling
a906670d1c Kernel: Convert klog() => dmesgln() in VMWareBackdoor 2021-03-09 22:10:41 +01:00
Andreas Kling
5fd3006db2 Kernel: Convert klog() => dmesgln() in PS2MouseDevice 2021-03-09 22:10:41 +01:00
Andreas Kling
52ef08081c Kernel: Remove some unused things in kmalloc.cpp 2021-03-09 22:10:41 +01:00
Andreas Kling
cb4fcaa4b5 Kernel: Convert klog() => dmesgln() in kmalloc 2021-03-09 22:10:41 +01:00
Andreas Kling
10f10abaa3 Kernel: Convert klog() => dmesgln() in filesystem code 2021-03-09 22:10:41 +01:00
Andreas Kling
2fc684f6bc Kernel: Remove ancient FIFO_DEBUG code 2021-03-09 22:10:41 +01:00
Ben Wiederhake
a265ea98b9 Utilities: Add a quotes database and 'fortunes' program 
I told you, we need a quotes ~~page~~ file! :D
 2021-03-09 22:10:30 +01:00
Andreas Kling
df621b9415 LibWeb: Run clang-format on CSS/Parser/StyleComponentValueRule.h 2021-03-09 20:06:52 +01:00
Andreas Kling
7c222d1bdf LibWeb: Run clang-format on CSS/Parser/Token.h 2021-03-09 20:06:23 +01:00
Andreas Kling
5a050cb8d1 LibX86: Don't use "if (foo) [[unlikely]] { }" for now (to please clang) 2021-03-09 17:47:28 +01:00
Andreas Kling
ad152bfa59 LibWeb: Add a whole bunch of rule classes for the new CSS parser 
Original work by @stelar7.
 2021-03-09 17:36:21 +01:00
Andreas Kling
16cde3f14a LibWeb: Rename CSSParser => DeprecatedCSSParser 2021-03-09 17:35:57 +01:00
Andreas Kling
078f0a5c67 LibWeb: Add specification-based CSS tokenizer 
Original work by @stelar7 for #2628.
 2021-03-09 17:35:38 +01:00
Andreas Kling
82aea65bd3 UserspaceEmulator: Add fast-path for is<MmapRegion>() 
Don't use default RTTI for these since they are performance-sensitive.
 2021-03-09 15:17:15 +01:00