arch/arm/include/asm/syscalls.h

File Facts

System

Linux kernel

Corpus path

arch/arm/include/asm/syscalls.h

Extension

.h

Size

2012 bytes

Lines

52

Domain

Architecture Layer

Bucket

arch/arm

Inferred role

Architecture Layer: syscall or user/kernel boundary

Status

core implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Defines or participates in a user/kernel boundary; inspect argument validation, copy_from_user/copy_to_user, credentials, and dispatch target.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/linkage.h
• linux/types.h

Detected Declarations

• struct pt_regs
• struct oldabi_stat64
• struct oabi_epoll_event
• struct oabi_sembuf
• struct old_timespec32
• struct sockaddr
• struct user_msghdr

Annotated Snippet

#ifndef __ASM_SYSCALLS_H
#define __ASM_SYSCALLS_H

#include <linux/linkage.h>
#include <linux/types.h>

struct pt_regs;
asmlinkage int sys_sigreturn(struct pt_regs *regs);
asmlinkage int sys_rt_sigreturn(struct pt_regs *regs);
asmlinkage long sys_arm_fadvise64_64(int fd, int advice,
				     loff_t offset, loff_t len);

struct oldabi_stat64;
asmlinkage long sys_oabi_stat64(const char __user * filename,
				struct oldabi_stat64 __user * statbuf);
asmlinkage long sys_oabi_lstat64(const char __user * filename,
				 struct oldabi_stat64 __user * statbuf);
asmlinkage long sys_oabi_fstat64(unsigned long fd,
				 struct oldabi_stat64 __user * statbuf);
asmlinkage long sys_oabi_fstatat64(int dfd,
				   const char __user *filename,
				   struct oldabi_stat64  __user *statbuf,
				   int flag);
asmlinkage long sys_oabi_fcntl64(unsigned int fd, unsigned int cmd,
				 unsigned long arg);
struct oabi_epoll_event;
asmlinkage long sys_oabi_epoll_ctl(int epfd, int op, int fd,
				   struct oabi_epoll_event __user *event);
struct oabi_sembuf;
struct old_timespec32;
asmlinkage long sys_oabi_semtimedop(int semid,
				    struct oabi_sembuf __user *tsops,
				    unsigned nsops,
				    const struct old_timespec32 __user *timeout);
asmlinkage long sys_oabi_semop(int semid, struct oabi_sembuf __user *tsops,
			       unsigned nsops);
asmlinkage int sys_oabi_ipc(uint call, int first, int second, int third,
			    void __user *ptr, long fifth);
struct sockaddr;
asmlinkage long sys_oabi_bind(int fd, struct sockaddr __user *addr, int addrlen);
asmlinkage long sys_oabi_connect(int fd, struct sockaddr __user *addr, int addrlen);
asmlinkage long sys_oabi_sendto(int fd, void __user *buff,
				size_t len, unsigned flags,
				struct sockaddr __user *addr,
				int addrlen);
struct user_msghdr;
asmlinkage long sys_oabi_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
asmlinkage long sys_oabi_socketcall(int call, unsigned long __user *args);

#endif

Annotation

• Immediate include surface: `linux/linkage.h`, `linux/types.h`.
• Detected declarations: `struct pt_regs`, `struct oldabi_stat64`, `struct oabi_epoll_event`, `struct oabi_sembuf`, `struct old_timespec32`, `struct sockaddr`, `struct user_msghdr`.
• Atlas domain: Architecture Layer / arch/arm.
• Implementation status: core implementation candidate.

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.