Documentation/userspace-api/index.rst

Source file repositories/reference/linux-study-clean/Documentation/userspace-api/index.rst

File Facts

System: Linux kernel
Corpus path: Documentation/userspace-api/index.rst
Extension: .rst
Size: 1131 bytes
Lines: 72
Domain: Support Tooling And Documentation
Bucket: Documentation
Inferred role: Support Tooling And Documentation: documentation
Status: atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

=====================================
The Linux kernel user-space API guide
=====================================

.. _man-pages: https://www.kernel.org/doc/man-pages/

While much of the kernel's user-space API is documented elsewhere
(particularly in the man-pages_ project), some user-space information can
also be found in the kernel tree itself.  This manual is intended to be the
place where this information is gathered.


System calls
============

.. toctree::
   :maxdepth: 1

   unshare
   futex2
   ebpf/index
   ioctl/index
   mseal
   rseq

Security-related interfaces
===========================

.. toctree::
   :maxdepth: 1

   no_new_privs
   seccomp_filter
   landlock
   lsm
   mfd_noexec
   spec_ctrl
   tee
   check_exec

Devices and I/O
===============

.. toctree::
   :maxdepth: 1

   accelerators/ocxl
   dma-buf-heaps
   dma-buf-alloc-exchange
   fwctl/index
   gpio/index
   iommufd
   media/index
   dcdbas
   vduse
   isapnp

Everything else
===============

.. toctree::
   :maxdepth: 1

   ELF
   liveupdate
   netlink/index
   sysfs-platform_profile
   vduse
   futex2
   perf_ring_buffer

Annotation

Atlas domain: Support Tooling And Documentation / Documentation.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.