From b0da6d44157aa6e652de7634343708251ba64146 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Fri, 29 Apr 2016 22:29:26 +0100 Subject: [PATCH] asm-generic: Drop renameat syscall from default list The newer renameat2 syscall provides all the functionality provided by the renameat syscall and adds flags, so future architectures won't need to include renameat. Therefore drop the renameat syscall from the generic syscall list unless __ARCH_WANT_RENAMEAT is defined by the architecture's unistd.h prior to including asm-generic/unistd.h, and adjust all architectures using the generic syscall list to define it so that no in-tree architectures are affected. Signed-off-by: James Hogan Acked-by: Vineet Gupta Cc: linux-arch@vger.kernel.org Cc: linux-snps-arc@lists.infradead.org Cc: Catalin Marinas Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.org Cc: Mark Salter Cc: Aurelien Jacquiot Cc: linux-c6x-dev@linux-c6x.org Cc: Richard Kuo Cc: linux-hexagon@vger.kernel.org Cc: linux-metag@vger.kernel.org Cc: Jonas Bonn Cc: linux@lists.openrisc.net Cc: Chen Liqin Cc: Lennox Wu Cc: Chris Metcalf Cc: Guan Xuetao Cc: Ley Foon Tan Cc: nios2-dev@lists.rocketboards.org Cc: Yoshinori Sato Cc: uclinux-h8-devel@lists.sourceforge.jp Signed-off-by: Arnd Bergmann --- arch/arc/include/uapi/asm/unistd.h | 1 + arch/arm64/include/uapi/asm/unistd.h | 3 +++ arch/c6x/include/uapi/asm/unistd.h | 1 + arch/h8300/include/uapi/asm/unistd.h | 2 ++ arch/hexagon/include/uapi/asm/unistd.h | 1 + arch/metag/include/uapi/asm/unistd.h | 2 ++ arch/nios2/include/uapi/asm/unistd.h | 2 ++ arch/openrisc/include/uapi/asm/unistd.h | 1 + arch/score/include/uapi/asm/unistd.h | 1 + arch/tile/include/uapi/asm/unistd.h | 1 + arch/unicore32/include/uapi/asm/unistd.h | 2 ++ include/uapi/asm-generic/unistd.h | 3 +++ 12 files changed, 20 insertions(+) diff --git a/arch/arc/include/uapi/asm/unistd.h b/arch/arc/include/uapi/asm/unistd.h index 39e58d1cdf90..41fa2ec9e02c 100644 --- a/arch/arc/include/uapi/asm/unistd.h +++ b/arch/arc/include/uapi/asm/unistd.h @@ -15,6 +15,7 @@ #if !defined(_UAPI_ASM_ARC_UNISTD_H) || defined(__SYSCALL) #define _UAPI_ASM_ARC_UNISTD_H +#define __ARCH_WANT_RENAMEAT #define __ARCH_WANT_SYS_EXECVE #define __ARCH_WANT_SYS_CLONE #define __ARCH_WANT_SYS_VFORK diff --git a/arch/arm64/include/uapi/asm/unistd.h b/arch/arm64/include/uapi/asm/unistd.h index 1caadc24e3fe..043d17a21342 100644 --- a/arch/arm64/include/uapi/asm/unistd.h +++ b/arch/arm64/include/uapi/asm/unistd.h @@ -13,4 +13,7 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ + +#define __ARCH_WANT_RENAMEAT + #include diff --git a/arch/c6x/include/uapi/asm/unistd.h b/arch/c6x/include/uapi/asm/unistd.h index e7d09a614d10..12d73d9d81f5 100644 --- a/arch/c6x/include/uapi/asm/unistd.h +++ b/arch/c6x/include/uapi/asm/unistd.h @@ -14,6 +14,7 @@ * more details. */ +#define __ARCH_WANT_RENAMEAT #define __ARCH_WANT_SYS_CLONE /* Use the standard ABI for syscalls. */ diff --git a/arch/h8300/include/uapi/asm/unistd.h b/arch/h8300/include/uapi/asm/unistd.h index 7a2eb698def3..7dd20ef7625a 100644 --- a/arch/h8300/include/uapi/asm/unistd.h +++ b/arch/h8300/include/uapi/asm/unistd.h @@ -1,3 +1,5 @@ #define __ARCH_NOMMU +#define __ARCH_WANT_RENAMEAT + #include diff --git a/arch/hexagon/include/uapi/asm/unistd.h b/arch/hexagon/include/uapi/asm/unistd.h index ffee405d6803..21517600432b 100644 --- a/arch/hexagon/include/uapi/asm/unistd.h +++ b/arch/hexagon/include/uapi/asm/unistd.h @@ -27,6 +27,7 @@ */ #define sys_mmap2 sys_mmap_pgoff +#define __ARCH_WANT_RENAMEAT #define __ARCH_WANT_SYS_EXECVE #define __ARCH_WANT_SYS_CLONE #define __ARCH_WANT_SYS_VFORK diff --git a/arch/metag/include/uapi/asm/unistd.h b/arch/metag/include/uapi/asm/unistd.h index b80b8e899d22..459b6ec15848 100644 --- a/arch/metag/include/uapi/asm/unistd.h +++ b/arch/metag/include/uapi/asm/unistd.h @@ -7,6 +7,8 @@ * (at your option) any later version. */ +#define __ARCH_WANT_RENAMEAT + /* Use the standard ABI for syscalls. */ #include diff --git a/arch/nios2/include/uapi/asm/unistd.h b/arch/nios2/include/uapi/asm/unistd.h index c4bf79510461..51a32c71ce2b 100644 --- a/arch/nios2/include/uapi/asm/unistd.h +++ b/arch/nios2/include/uapi/asm/unistd.h @@ -17,6 +17,8 @@ #define sys_mmap2 sys_mmap_pgoff +#define __ARCH_WANT_RENAMEAT + /* Use the standard ABI for syscalls */ #include diff --git a/arch/openrisc/include/uapi/asm/unistd.h b/arch/openrisc/include/uapi/asm/unistd.h index ce40b71df006..471905bd7745 100644 --- a/arch/openrisc/include/uapi/asm/unistd.h +++ b/arch/openrisc/include/uapi/asm/unistd.h @@ -20,6 +20,7 @@ #define sys_mmap2 sys_mmap_pgoff +#define __ARCH_WANT_RENAMEAT #define __ARCH_WANT_SYS_FORK #define __ARCH_WANT_SYS_CLONE diff --git a/arch/score/include/uapi/asm/unistd.h b/arch/score/include/uapi/asm/unistd.h index 9cb4260a5f3e..d4008c339e89 100644 --- a/arch/score/include/uapi/asm/unistd.h +++ b/arch/score/include/uapi/asm/unistd.h @@ -1,5 +1,6 @@ #define __ARCH_HAVE_MMU +#define __ARCH_WANT_RENAMEAT #define __ARCH_WANT_SYSCALL_NO_AT #define __ARCH_WANT_SYSCALL_NO_FLAGS #define __ARCH_WANT_SYSCALL_OFF_T diff --git a/arch/tile/include/uapi/asm/unistd.h b/arch/tile/include/uapi/asm/unistd.h index 3866397aaf5a..24e9187e85a8 100644 --- a/arch/tile/include/uapi/asm/unistd.h +++ b/arch/tile/include/uapi/asm/unistd.h @@ -12,6 +12,7 @@ * more details. */ +#define __ARCH_WANT_RENAMEAT #if !defined(__LP64__) || defined(__SYSCALL_COMPAT) /* Use the flavor of this syscall that matches the 32-bit API better. */ #define __ARCH_WANT_SYNC_FILE_RANGE2 diff --git a/arch/unicore32/include/uapi/asm/unistd.h b/arch/unicore32/include/uapi/asm/unistd.h index d4cc4559d848..1f63c476528e 100644 --- a/arch/unicore32/include/uapi/asm/unistd.h +++ b/arch/unicore32/include/uapi/asm/unistd.h @@ -10,6 +10,8 @@ * published by the Free Software Foundation. */ +#define __ARCH_WANT_RENAMEAT + /* Use the standard ABI for syscalls. */ #include #define __ARCH_WANT_SYS_CLONE diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index c51afb71bfab..a26415b5151c 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -127,8 +127,11 @@ __SYSCALL(__NR_unlinkat, sys_unlinkat) __SYSCALL(__NR_symlinkat, sys_symlinkat) #define __NR_linkat 37 __SYSCALL(__NR_linkat, sys_linkat) +#ifdef __ARCH_WANT_RENAMEAT +/* renameat is superseded with flags by renameat2 */ #define __NR_renameat 38 __SYSCALL(__NR_renameat, sys_renameat) +#endif /* __ARCH_WANT_RENAMEAT */ /* fs/namespace.c */ #define __NR_umount2 39 -- 2.20.1