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 <[email protected]> Acked-by: Vineet Gupta <[email protected]> Cc: [email protected] Cc: [email protected] Cc: Catalin Marinas <[email protected]> Cc: Will Deacon <[email protected]> Cc: [email protected] Cc: Mark Salter <[email protected]> Cc: Aurelien Jacquiot <[email protected]> Cc: [email protected] Cc: Richard Kuo <[email protected]> Cc: [email protected] Cc: [email protected] Cc: Jonas Bonn <[email protected]> Cc: [email protected] Cc: Chen Liqin <[email protected]> Cc: Lennox Wu <[email protected]> Cc: Chris Metcalf <[email protected]> Cc: Guan Xuetao <[email protected]> Cc: Ley Foon Tan <[email protected]> Cc: [email protected] Cc: Yoshinori Sato <[email protected]> Cc: [email protected] Signed-off-by: Arnd Bergmann <[email protected]>
laijs · May 4, 2016 · b0da6d4 · b0da6d4
1 parent 1f93e9f
commit b0da6d4
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diff --git 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
@@ -13,4 +13,7 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
+
+#define __ARCH_WANT_RENAMEAT
+
 #include <asm-generic/unistd.h>
diff --git 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
@@ -1,3 +1,5 @@
 #define __ARCH_NOMMU
 
+#define __ARCH_WANT_RENAMEAT
+
 #include <asm-generic/unistd.h>
diff --git 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
@@ -7,6 +7,8 @@
  * (at your option) any later version.
  */
 
+#define __ARCH_WANT_RENAMEAT
+
 /* Use the standard ABI for syscalls. */
 #include <asm-generic/unistd.h>
 

diff --git 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 <asm-generic/unistd.h>
 

diff --git 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
@@ -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
@@ -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
@@ -10,6 +10,8 @@
  * published by the Free Software Foundation.
  */
 
+#define __ARCH_WANT_RENAMEAT
+
 /* Use the standard ABI for syscalls. */
 #include <asm-generic/unistd.h>
 #define __ARCH_WANT_SYS_CLONE
diff --git 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