net/unix/diag.c

File Facts

System

Linux kernel

Corpus path

net/unix/diag.c

Extension

.c

Size

7496 bytes

Lines

331

Domain

Networking Core

Bucket

Sockets, Protocols, Packet Path, And Network Policy

Inferred role

Networking Core: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

• Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/dcache.h
• linux/module.h
• linux/skbuff.h
• linux/sock_diag.h
• linux/types.h
• linux/user_namespace.h
• net/af_unix.h
• net/netlink.h
• net/tcp_states.h
• uapi/linux/unix_diag.h
• af_unix.h

Detected Declarations

• function sk_diag_dump_name
• function sk_diag_dump_vfs
• function sk_diag_dump_peer
• function sk_diag_dump_icons
• function sk_diag_show_rqlen
• function sk_diag_dump_uid
• function sk_diag_fill
• function unix_diag_dump
• function sk_for_each
• function sk_for_each
• function unix_diag_get_exact
• function unix_diag_handler_dump
• function unix_diag_init
• function unix_diag_exit
• module init unix_diag_init

Annotated Snippet

module_init(unix_diag_init);
module_exit(unix_diag_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("UNIX socket monitoring via SOCK_DIAG");
MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 1 /* AF_LOCAL */);

Annotation

• Immediate include surface: `linux/dcache.h`, `linux/module.h`, `linux/skbuff.h`, `linux/sock_diag.h`, `linux/types.h`, `linux/user_namespace.h`, `net/af_unix.h`, `net/netlink.h`.
• Detected declarations: `function sk_diag_dump_name`, `function sk_diag_dump_vfs`, `function sk_diag_dump_peer`, `function sk_diag_dump_icons`, `function sk_diag_show_rqlen`, `function sk_diag_dump_uid`, `function sk_diag_fill`, `function unix_diag_dump`, `function sk_for_each`, `function sk_for_each`.
• Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.