Red Bear OS baea0e523b review: 4 critical fixes (ICMP queue, refcount, udp panic, vlan send)
CRITICAL BUGS FIXED:

1. router/mod.rs: ICMP errors for Unreachable/Prohibit went to rx_buffer
   (infinite loop back to input) instead of tx_buffer (sent to source).
   Combined Unreachable/Prohibit arms; both now use tx_buffer.

2. scheme/socket.rs dup(): refcount leak in update_with branch.
   OLD code: new_handle.socket_handle() got +2 when update_with was
   Some, but only decremented once on close. Net: SH1 over-counted (+1),
   SH2 (new listening socket from update_with) never tracked at all.
   FIX: in update_with branch, increment refcount of 'socket_handle'
   (the new SH), not new_handle.socket_handle(). The always-run
   increment at the bottom covers new_handle. Both increments serve
   different purposes and are now distinct.

3. scheme/udp.rs: 4 .expect() panic vectors in bind/send/recv.
   'Can't bind', 'Can't send', 'Can't receive', 'Can't recieve' all
   panicked the daemon. Now return EIO via ? operator.

4. link/vlan.rs (and vxlan/gre/ipip already partially fixed in R42):
   send() pushed tagged packets into self.recv_queue, creating a
   self-loop where packets were never delivered. Now drops packets
   with a debug log since no parent device reference exists.

5. link/qdisc.rs: TokenBucket token_add could overflow u64 on long
   elapsed durations. Changed to saturating_mul.

DOC FIX:
6. filter/table.rs docstring example used --sport 1024:65535 (port
   range) but parse_port only accepts single port. Changed example to
   use single port value. Range support is a future enhancement.

All 29 existing tests still pass.
2026-07-09 00:29:46 +03:00

Base

Repository containing various system daemons, that are considered fundamental for the OS.

You can see what each component does in the following list:

  • audiod : Daemon used to process the sound drivers audio
  • bootstrap : First code that the kernel executes, responsible for spawning the init daemon
  • daemon : Redox daemon library
  • drivers
  • init : Daemon used to start most system components and programs
  • initfs : Filesystem with the necessary system components to run RedoxFS
  • ipcd : Daemon used for inter-process communication
  • logd : Daemon used to log system components and daemons
  • netstack : Daemon used for networking
  • ptyd : Daemon used for pseudo-terminal
  • ramfs : RAM filesystem
  • randd : Daemon used for random number generation
  • zerod : Daemon used to discard all writes and fill read buffers with zero

How To Contribute

To learn how to contribute you need to read the following document:

If you want to contribute to drivers read its README

Development

To learn how to do development with these system components inside the Redox build system you need to read the Build System and Coding and Building pages.

How To Build

It is recommended to build this system component via the Redox build system, you can learn how to do it on the Building Redox page.

To build and test outside the build system, install redoxer then use check.sh script to build or test:

  • ./check.sh - Check build for x86_64
  • ./check.sh --arch=ARCH - Check build for specific ARCH (aarch64, i586, riscv64gc)
  • ./check.sh --all - Check build for all ARCH
  • ./check.sh --test - Check the base system boots up on x86_64

You can also use make install to inspect the content on ./sysroot, or make test-gui to test booting with orbital interactively.

S
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RedBear Operating System, based on RedoxOS. Licenced under MIT license.
https://redbearos.org
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