arch/s390/include/asm/syscall_wrapper.h

File Facts

System

Linux kernel

Corpus path

arch/s390/include/asm/syscall_wrapper.h

Extension

.h

Size

1741 bytes

Lines

50

Domain

Architecture Layer

Bucket

arch/s390

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

• 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

#define SYSCALL_DEFINE0(sname)						\
	SYSCALL_METADATA(_##sname, 0);					\
	long __s390x_sys_##sname(struct pt_regs *__unused);		\
	ALLOW_ERROR_INJECTION(__s390x_sys_##sname, ERRNO);		\
	static inline long __do_sys_##sname(void);			\
	long __s390x_sys_##sname(struct pt_regs *__unused)		\
	{								\
		return __do_sys_##sname();				\
	}								\
	static inline long __do_sys_##sname(void)

#define COND_SYSCALL(name)						\
	cond_syscall(__s390x_sys_##name)

#define __S390_SYS_STUBx(x, fullname, name, ...)

#define __SYSCALL_DEFINEx(x, name, ...)						\
	long __s390x_sys##name(struct pt_regs *regs);				\
	ALLOW_ERROR_INJECTION(__s390x_sys##name, ERRNO);			\
	static inline long __se_sys##name(__MAP(x, __SC_LONG, __VA_ARGS__));	\
	static inline long __do_sys##name(__MAP(x, __SC_DECL, __VA_ARGS__));	\
	__S390_SYS_STUBx(x, name, __VA_ARGS__);					\
	long __s390x_sys##name(struct pt_regs *regs)				\
	{									\
		return __se_sys##name(SC_S390_REGS_TO_ARGS(x, __VA_ARGS__));	\
	}									\
	static inline long __se_sys##name(__MAP(x, __SC_LONG, __VA_ARGS__))	\
	{									\
		__MAP(x, __SC_TEST, __VA_ARGS__);				\
		return __do_sys##name(__MAP(x, __SC_CAST, __VA_ARGS__));	\
	}									\
	static inline long __do_sys##name(__MAP(x, __SC_DECL, __VA_ARGS__))

#endif /* _ASM_S390_SYSCALL_WRAPPER_H */

Annotation

• Atlas domain: Architecture Layer / arch/s390.
• 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.