fs/binfmt_flat.c

File Facts

System

Linux kernel

Corpus path

fs/binfmt_flat.c

Extension

.c

Size

26481 bytes

Lines

947

Domain

Core OS

Bucket

VFS And Filesystem Core

Inferred role

Core OS: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/kernel.h
• linux/sched.h
• linux/sched/task_stack.h
• linux/mm.h
• linux/mman.h
• linux/errno.h
• linux/signal.h
• linux/string.h
• linux/fs.h
• linux/file.h
• linux/ptrace.h
• linux/user.h
• linux/slab.h
• linux/binfmts.h
• linux/personality.h
• linux/init.h
• linux/flat.h
• linux/uaccess.h
• linux/vmalloc.h
• asm/byteorder.h
• linux/unaligned.h
• asm/cacheflush.h
• asm/page.h
• asm/flat.h
• linux/zlib.h

Detected Declarations

• struct lib_info
• function create_flat_tables
• function decompress_exec
• function calc_reloc
• function old_reloc
• function load_flat_file
• function bits
• function zero
• function load_flat_binary
• function init_flat_binfmt
• module init init_flat_binfmt

Annotated Snippet

core_initcall(init_flat_binfmt);

/****************************************************************************/

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/sched.h`, `linux/sched/task_stack.h`, `linux/mm.h`, `linux/mman.h`, `linux/errno.h`, `linux/signal.h`, `linux/string.h`.
• Detected declarations: `struct lib_info`, `function create_flat_tables`, `function decompress_exec`, `function calc_reloc`, `function old_reloc`, `function load_flat_file`, `function bits`, `function zero`, `function load_flat_binary`, `function init_flat_binfmt`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• Implementation status: integration implementation candidate.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.

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.