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Tom c3451899bc Kernel: Add MAP_NORESERVE support to mmap
Rather than lazily committing regions by default, we now commit
the entire region unless MAP_NORESERVE is specified.

This solves random crashes in low-memory situations where e.g. the
malloc heap allocated memory, but using pages that haven't been
used before triggers a crash when no more physical memory is available.

Use this flag to create large regions without actually committing
the backing memory. madvise() can be used to commit arbitrary areas
of such regions after creating them.
2021-01-01 23:43:44 +01:00
.github Meta: Add test-compress to Github workflow. 2021-01-01 22:23:13 +01:00
AK AK: Add Result<void, ErrorType> specialization, cleanup 2021-01-01 23:01:48 +01:00
Applications LibJS: Remove hand-rolled Object is_foo() helpers in favor of RTTI 2021-01-01 17:46:39 +01:00
Base Games: Add Conway 2021-01-01 22:51:37 +01:00
Demos WidgetGallery: Add a GUI::OpacitySlider to the sliders tab :^) 2020-12-31 12:16:05 +01:00
DevTools HackStudio: Use is<T> instead of strcmp on a widget class_name() :^) 2021-01-01 23:02:31 +01:00
Documentation Meta+Docs+CI: Require clang-format >= 11 2020-12-31 21:51:00 +01:00
Games Conway: Distribute leftover space equally on all sides 2021-01-01 23:34:25 +01:00
Kernel Kernel: Add MAP_NORESERVE support to mmap 2021-01-01 23:43:44 +01:00
Libraries LibGfx: Tweak color of checkmark in disabled+checked GUI::CheckBox 2021-01-01 23:08:59 +01:00
MenuApplets ClipboardHistory: Fix crash when deleting without selection 2021-01-01 22:50:56 +01:00
Meta Kernel: Memory purging improvements 2021-01-01 23:43:44 +01:00
Ports Ports: Hard-code SERENITY_ARCH=i686 until other architectures work (#4688) 2020-12-31 21:54:51 +01:00
Services ProtocolServer: Use an empty Optional<IPC::File> to pass along "no fd" 2021-01-01 14:26:43 +01:00
Shell AK+Format: Remove TypeErasedFormatParams& from format function. 2020-12-30 20:33:53 +01:00
Toolchain Meta: Enable RTTI for Userspace programs 2021-01-01 14:45:09 +01:00
Userland LibThread: Improve semantics of Thread::join, and remove Thread::quit. 2021-01-01 23:01:48 +01:00
.clang-format Meta: Update .clang-format to not indent nested namespaces 2020-03-14 10:10:21 +01:00
.gitattributes Meta: Add .gitattributes file 2020-07-30 17:07:40 +02:00
.gitignore Revert "Meta: Remove catchall lines in .gitignore (#4565)" 2020-12-28 00:16:46 +01:00
.pre-commit-config.yaml Meta: Update lint-{clang-format,shell-scripts}.sh to take a list of files 2020-12-27 21:25:27 +01:00
.prettierignore Meta: Add lint-prettier.sh 2020-12-27 21:25:27 +01:00
.prettierrc Meta: Move prettier config files to the root of the repository 2020-08-24 18:21:33 +02:00
CMakeLists.txt Meta: Enable RTTI for Userspace programs 2021-01-01 14:45:09 +01:00
CODE_OF_CONDUCT.md Meta: Move code of conduct (lol) to a separate file 2019-10-23 10:05:06 +02:00
CONTRIBUTING.md Meta+Docs+CI: Require clang-format >= 11 2020-12-31 21:51:00 +01:00
LICENSE Meta: Update project copyright dates (2018-2021) :^) 2021-01-01 01:14:16 +01:00
ReadMe.md Meta: Add Brendan Coles to the contributors list :^) 2020-12-24 10:47:36 +01:00

SerenityOS

Graphical Unix-like operating system for x86 computers.

Build status Fuzzing Status

About

SerenityOS is a love letter to '90s user interfaces with a custom Unix-like core. It flatters with sincerity by stealing beautiful ideas from various other systems.

Roughly speaking, the goal is a marriage between the aesthetic of late-1990s productivity software and the power-user accessibility of late-2000s *nix. This is a system by us, for us, based on the things we like.

I (Andreas) regularly post raw hacking sessions and demos on my YouTube channel.

Sometimes I write about the system on my github.io blog.

I'm also on Patreon and GitHub Sponsors if you would like to show some support that way.

Screenshot

Screenshot as of 8ea4375

Kernel features

  • x86 (32-bit) kernel with pre-emptive multi-threading
  • Hardware protections (SMEP, SMAP, UMIP, NX, WP, TSD, ...)
  • IPv4 stack with ARP, TCP, UDP and ICMP protocols
  • ext2 filesystem
  • POSIX signals
  • Purgeable memory
  • /proc filesystem
  • Pseudoterminals (with /dev/pts filesystem)
  • Filesystem notifications
  • CPU and memory profiling
  • SoundBlaster 16 driver
  • VMWare/QEMU mouse integration

System services

  • Launch/session daemon (SystemServer)
  • Compositing window server (WindowServer)
  • Text console manager (TTYServer)
  • DNS client (LookupServer)
  • Network protocols server (ProtocolServer)
  • Software-mixing sound daemon (AudioServer)
  • Desktop notifications (NotificationServer)
  • HTTP server (WebServer)
  • Telnet server (TelnetServer)
  • DHCP client (DHCPClient)

Libraries

  • C++ templates and containers (AK)
  • Event loop and utilities (LibCore)
  • 2D graphics library (LibGfx)
  • GUI toolkit (LibGUI)
  • Cross-process communication library (LibIPC)
  • HTML/CSS engine (LibWeb)
  • JavaScript engine (LibJS)
  • Markdown (LibMarkdown)
  • Audio (LibAudio)
  • PCI database (LibPCIDB)
  • Terminal emulation (LibVT)
  • Out-of-process network protocol I/O (LibProtocol)
  • Mathematical functions (LibM)
  • ELF file handling (LibELF)
  • POSIX threading (LibPthread)
  • Higher-level threading (LibThread)
  • Transport Layer Security (LibTLS)
  • HTTP and HTTPS (LibHTTP)

Userland features

  • Unix-like libc and userland
  • Shell with pipes and I/O redirection
  • On-line help system (both terminal and GUI variants)
  • Web browser (Browser)
  • C++ IDE (HackStudio)
  • IRC client
  • Desktop synthesizer (Piano)
  • Various desktop apps & games
  • Color themes

How do I read the documentation?

Man pages are browsable outside of SerenityOS under Base/usr/share/man.

When running SerenityOS you can use man for the terminal interface, or help for the GUI interface.

How do I build and run this?

See the SerenityOS build instructions

Before opening an issue

Please see the issue policy.

Communication hubs

The main hub is #serenityos on the Freenode IRC network.

We also have a project mailing list: serenityos-dev.

Author

Contributors

(And many more!) The people listed above have landed more than 100 commits in the project. :^)

License

SerenityOS is licensed under a 2-clause BSD license.