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Commit cfbe2716 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

Merge tag 'y2038-syscall-abi' of... 

Merge tag 'y2038-syscall-abi' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground into timers/2038

Pull additional syscall ABI cleanup for y2038 from Arnd Bergmann:

This is a follow-up to the y2038 syscall patches already merged in the tip
tree.  As the final 32-bit RISC-V syscall ABI is still being decided on,
this is the last chance to make a few corrections to leave out interfaces
based on 32-bit time_t along with the old off_t and rlimit types.

The series achieves this in a few steps:

- A couple of bug fixes for minor regressions I introduced
  in the original series

- A couple of older patches from Yury Norov that I had never
  merged in the past, these fix up the openat/open_by_handle_at and
  getrlimit/setrlimit syscalls to disallow the old versions of off_t
  and rlimit.

- Hiding the deprecated system calls behind an #ifdef in
  include/uapi/asm-generic/unistd.h

- Change arch/riscv to drop all these ABIs.

Originally, the plan was to also leave these out on C-Sky, but that now
has a glibc port that uses the older interfaces, so we need to leave
them in place.
parents 41ea3910 d4c08b97

arch/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -276,6 +276,16 @@ config ARCH_THREAD_STACK_ALLOCATOR 
config ARCH_WANTS_DYNAMIC_TASK_STRUCT

	bool



config ARCH_32BIT_OFF_T

	bool

	depends on !64BIT

	help

	  All new 32-bit architectures should have 64-bit off_t type on

	  userspace side which corresponds to the loff_t kernel type. This

	  is the requirement for modern ABIs. Some existing architectures

	  still support 32-bit off_t. This option is enabled for all such

	  architectures explicitly.



config HAVE_REGS_AND_STACK_ACCESS_API

	bool

	help

arch/arc/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ config ARC 
	select ARCH_HAS_SYNC_DMA_FOR_CPU

	select ARCH_HAS_SYNC_DMA_FOR_DEVICE

	select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC

	select ARCH_32BIT_OFF_T

	select BUILDTIME_EXTABLE_SORT

	select CLONE_BACKWARDS

	select COMMON_CLK

arch/arc/include/uapi/asm/unistd.h

+2 −0
Original line number Diff line number Diff line
@@ -18,10 +18,12 @@ 


#define __ARCH_WANT_RENAMEAT

#define __ARCH_WANT_STAT64

#define __ARCH_WANT_SET_GET_RLIMIT

#define __ARCH_WANT_SYS_EXECVE

#define __ARCH_WANT_SYS_CLONE

#define __ARCH_WANT_SYS_VFORK

#define __ARCH_WANT_SYS_FORK

#define __ARCH_WANT_TIME32_SYSCALLS



#define sys_mmap2 sys_mmap_pgoff

arch/arm/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ 
config ARM

	bool

	default y

	select ARCH_32BIT_OFF_T

	select ARCH_CLOCKSOURCE_DATA

	select ARCH_DISCARD_MEMBLOCK if !HAVE_ARCH_PFN_VALID && !KEXEC

	select ARCH_HAS_DEBUG_VIRTUAL if MMU

arch/arm64/include/uapi/asm/unistd.h

+2 −0
Original line number Diff line number Diff line
@@ -17,5 +17,7 @@ 


#define __ARCH_WANT_RENAMEAT

#define __ARCH_WANT_NEW_STAT

#define __ARCH_WANT_SET_GET_RLIMIT

#define __ARCH_WANT_TIME32_SYSCALLS



#include <asm-generic/unistd.h>