2022-11-01 15:12:14 +00:00
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FreeBSD Kernel Source:
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----------------------
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This directory contains the source files and build glue that make up the FreeBSD
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kernel and its modules, including both original and contributed software.
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2022-11-01 15:14:41 +00:00
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Kernel configuration files are located in the `conf/` subdirectory of each
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architecture. `GENERIC` is the configuration used in release builds. `NOTES`
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contains documentation of all possible entries. `LINT` is a compile-only
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configuration used to maximize build coverage and detect regressions.
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2023-08-03 13:48:17 +00:00
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Documentation:
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--------------
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Source code documentation is maintained in a set of man pages, under section 9.
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These pages are located in [`share/man/man9`](../share/man/man9), from the
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top-level of the src tree. Consult [`intro(9)`](https://man.freebsd.org/intro/9)
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for an overview of existing pages.
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Some additional high-level documentation of the kernel is maintained in the
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[Architecture Handbook](https://docs.freebsd.org/en/books/arch-handbook/).
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2022-11-01 15:12:14 +00:00
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Source Roadmap:
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---------------
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| Directory | Description |
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| --------- | ----------- |
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| amd64 | AMD64 (64-bit x86) architecture support |
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| arm | 32-bit ARM architecture support |
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| arm64 | 64-bit ARM (AArch64) architecture support |
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| cam | Common Access Method storage subsystem - `cam(4)` and `ctl(4)` |
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| cddl | CDDL-licensed optional sources such as DTrace |
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| conf | kernel build glue |
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| compat | Linux compatibility layer, FreeBSD 32-bit compatibility |
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| contrib | 3rd-party imported software such as OpenZFS |
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| crypto | crypto drivers |
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| ddb | interactive kernel debugger - `ddb(4)` |
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| fs | most filesystems, excluding UFS, NFS, and ZFS |
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| dev | device drivers and other arch independent code |
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| gdb | kernel remote GDB stub - `gdb(4)` |
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| geom | GEOM framework - `geom(4)` |
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| i386 | i386 (32-bit x86) architecture support |
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| kern | main part of the kernel |
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| libkern | libc-like and other support functions for kernel use |
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| modules | kernel module infrastructure |
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| net | core networking code |
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| net80211 | wireless networking (IEEE 802.11) - `net80211(4)` |
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| netgraph | graph-based networking subsystem - `netgraph(4)` |
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| netinet | IPv4 protocol implementation - `inet(4)` |
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| netinet6 | IPv6 protocol implementation - `inet6(4)` |
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| netipsec | IPsec protocol implementation - `ipsec(4)` |
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| netpfil | packet filters - `ipfw(4)`, `pf(4)`, and `ipfilter(4)` |
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| opencrypto | OpenCrypto framework - `crypto(7)` |
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| powerpc | PowerPC/POWER (32 and 64-bit) architecture support |
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| riscv | 64-bit RISC-V architecture support |
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| security | security facilities - `audit(4)` and `mac(4)` |
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| sys | kernel headers |
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| tests | kernel unit tests |
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| ufs | Unix File System - `ffs(7)` |
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| vm | virtual memory system |
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| x86 | code shared by AMD64 and i386 architectures |
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