include/linux/signal.h

File Facts

System

Linux kernel

Corpus path

include/linux/signal.h

Extension

.h

Size

14116 bytes

Lines

494

Domain

Core OS

Bucket

Core Kernel Interface

Inferred role

Core OS: implementation source

Status

source 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.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/bug.h
• linux/list.h
• linux/signal_types.h
• linux/string.h
• linux/bitops.h

Detected Declarations

• struct task_struct
• struct timespec
• struct pt_regs
• struct seq_file
• enum siginfo_layout
• enum pid_type
• function copy_siginfo
• function clear_siginfo
• function copy_siginfo_to_external
• function sigaddset
• function sigdelset
• function sigismember
• function sigisemptyset
• function sigequalsets
• function name
• function sigemptyset
• function sigfillset
• function sigaddsetmask
• function sigdelsetmask
• function sigtestsetmask
• function siginitset
• function siginitsetinv
• function init_sigpending
• function valid_signal
• function allow_signal
• function allow_kernel_signal
• function disallow_signal
• function sigaltstack_size_valid

Annotated Snippet

static inline bool sigaltstack_size_valid(size_t size) { return true; }
#endif /* !CONFIG_DYNAMIC_SIGFRAME */

#ifdef CONFIG_PROC_FS
struct seq_file;
extern void render_sigset_t(struct seq_file *, const char *, sigset_t *);
#endif

#ifndef arch_untagged_si_addr
/*
 * Given a fault address and a signal and si_code which correspond to the
 * _sigfault union member, returns the address that must appear in si_addr if
 * the signal handler does not have SA_EXPOSE_TAGBITS enabled in sa_flags.
 */
static inline void __user *arch_untagged_si_addr(void __user *addr,
						 unsigned long sig,
						 unsigned long si_code)
{
	return addr;
}
#endif

#endif /* _LINUX_SIGNAL_H */

Annotation

• Immediate include surface: `linux/bug.h`, `linux/list.h`, `linux/signal_types.h`, `linux/string.h`, `linux/bitops.h`.
• Detected declarations: `struct task_struct`, `struct timespec`, `struct pt_regs`, `struct seq_file`, `enum siginfo_layout`, `enum pid_type`, `function copy_siginfo`, `function clear_siginfo`, `function copy_siginfo_to_external`, `function sigaddset`.
• Atlas domain: Core OS / Core Kernel Interface.
• Implementation status: source 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.