[PATCH 03/20] asm-generic: Drop getrlimit and setrlimit syscalls from default list
Yury Norov
ynorov at caviumnetworks.com
Mon Jun 19 08:49:46 PDT 2017
The newer prlimit64 syscall provides all the functionality provided by
the getrlimit and setrlimit syscalls and adds the pid of target process,
so future architectures won't need to include getrlimit and setrlimit.
Therefore drop getrlimit and setrlimit syscalls from the generic syscall
list unless __ARCH_WANT_SET_GET_RLIMIT 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.
Cc: Arnd Bergmann <arnd at arndb.de>
Cc: James Hogan <james.hogan at imgtec.com>
Cc: linux-arch at vger.kernel.org
Cc: linux-snps-arc at lists.infradead.org
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Will Deacon <will.deacon at arm.com>
Cc: linux-arm-kernel at lists.infradead.org
Cc: Mark Salter <msalter at redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot at ti.com>
Cc: linux-c6x-dev at linux-c6x.org
Cc: Richard Kuo <rkuo at codeaurora.org>
Cc: linux-hexagon at vger.kernel.org
Cc: linux-metag at vger.kernel.org
Cc: Jonas Bonn <jonas at southpole.se>
Cc: linux at lists.openrisc.net
Cc: Chen Liqin <liqin.linux at gmail.com>
Cc: Lennox Wu <lennox.wu at gmail.com>
Cc: Chris Metcalf <cmetcalf at mellanox.com>
Cc: Guan Xuetao <gxt at mprc.pku.edu.cn>
Cc: Ley Foon Tan <lftan at altera.com>
Cc: nios2-dev at lists.rocketboards.org
Cc: Yoshinori Sato <ysato at users.sourceforge.jp>
Cc: uclinux-h8-devel at lists.sourceforge.jp
Signed-off-by: Yury Norov <ynorov at caviumnetworks.com>
Acked-by: Arnd Bergmann <arnd at arndb.de>
Acked-by: Mark Salter <msalter at redhat.com> [c6x]
Acked-by: James Hogan <james.hogan at imgtec.com> [metag]
Acked-by: Ley Foon Tan <lftan at altera.com> [nios2]
Acked-by: Stafford Horne <shorne at gmail.com> [openrisc]
Acked-by: Will Deacon <will.deacon at arm.com> [arm64]
Acked-by: Vineet Gupta <vgupta at synopsys.com> #arch/arc bits
---
arch/arc/include/uapi/asm/unistd.h | 1 +
arch/arm64/include/uapi/asm/unistd.h | 1 +
arch/c6x/include/uapi/asm/unistd.h | 1 +
arch/h8300/include/uapi/asm/unistd.h | 1 +
arch/hexagon/include/uapi/asm/unistd.h | 1 +
arch/metag/include/uapi/asm/unistd.h | 1 +
arch/nios2/include/uapi/asm/unistd.h | 1 +
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 | 1 +
include/uapi/asm-generic/unistd.h | 5 +++++
scripts/checksyscalls.sh | 5 +++++
13 files changed, 21 insertions(+)
diff --git a/arch/arc/include/uapi/asm/unistd.h b/arch/arc/include/uapi/asm/unistd.h
index 9a34136d84b2..ac6496527ad6 100644
--- a/arch/arc/include/uapi/asm/unistd.h
+++ b/arch/arc/include/uapi/asm/unistd.h
@@ -16,6 +16,7 @@
#define _UAPI_ASM_ARC_UNISTD_H
#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_SET_GET_RLIMIT
#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 043d17a21342..48355a683e25 100644
--- a/arch/arm64/include/uapi/asm/unistd.h
+++ b/arch/arm64/include/uapi/asm/unistd.h
@@ -15,5 +15,6 @@
*/
#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_SET_GET_RLIMIT
#include <asm-generic/unistd.h>
diff --git a/arch/c6x/include/uapi/asm/unistd.h b/arch/c6x/include/uapi/asm/unistd.h
index 12d73d9d81f5..f67623137853 100644
--- a/arch/c6x/include/uapi/asm/unistd.h
+++ b/arch/c6x/include/uapi/asm/unistd.h
@@ -15,6 +15,7 @@
*/
#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_SET_GET_RLIMIT
#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 7dd20ef7625a..2f98394b77d4 100644
--- a/arch/h8300/include/uapi/asm/unistd.h
+++ b/arch/h8300/include/uapi/asm/unistd.h
@@ -1,5 +1,6 @@
#define __ARCH_NOMMU
#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_SET_GET_RLIMIT
#include <asm-generic/unistd.h>
diff --git a/arch/hexagon/include/uapi/asm/unistd.h b/arch/hexagon/include/uapi/asm/unistd.h
index 21517600432b..52d585c5cdb2 100644
--- a/arch/hexagon/include/uapi/asm/unistd.h
+++ b/arch/hexagon/include/uapi/asm/unistd.h
@@ -28,6 +28,7 @@
#define sys_mmap2 sys_mmap_pgoff
#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_SET_GET_RLIMIT
#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 459b6ec15848..16b5cb32ec21 100644
--- a/arch/metag/include/uapi/asm/unistd.h
+++ b/arch/metag/include/uapi/asm/unistd.h
@@ -8,6 +8,7 @@
*/
#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_SET_GET_RLIMIT
/* 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
index 51a32c71ce2b..b0dda4de2bc7 100644
--- a/arch/nios2/include/uapi/asm/unistd.h
+++ b/arch/nios2/include/uapi/asm/unistd.h
@@ -18,6 +18,7 @@
#define sys_mmap2 sys_mmap_pgoff
#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_SET_GET_RLIMIT
/* 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
index 471905bd7745..6812d81b3c6c 100644
--- a/arch/openrisc/include/uapi/asm/unistd.h
+++ b/arch/openrisc/include/uapi/asm/unistd.h
@@ -21,6 +21,7 @@
#define sys_mmap2 sys_mmap_pgoff
#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_SET_GET_RLIMIT
#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 d4008c339e89..7ad1bdcb8615 100644
--- a/arch/score/include/uapi/asm/unistd.h
+++ b/arch/score/include/uapi/asm/unistd.h
@@ -1,6 +1,7 @@
#define __ARCH_HAVE_MMU
#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_SET_GET_RLIMIT
#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 24e9187e85a8..cf0505fe4b9c 100644
--- a/arch/tile/include/uapi/asm/unistd.h
+++ b/arch/tile/include/uapi/asm/unistd.h
@@ -13,6 +13,7 @@
*/
#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_SET_GET_RLIMIT
#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 9cf71c7bedb1..76ece524ab70 100644
--- a/arch/unicore32/include/uapi/asm/unistd.h
+++ b/arch/unicore32/include/uapi/asm/unistd.h
@@ -11,6 +11,7 @@
*/
#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_SET_GET_RLIMIT
#ifndef CONFIG_UNICORE32_OLDABI
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
index 429dd335def6..ef90d53ac9b6 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -464,10 +464,15 @@ __SYSCALL(__NR_uname, sys_newuname)
__SYSCALL(__NR_sethostname, sys_sethostname)
#define __NR_setdomainname 162
__SYSCALL(__NR_setdomainname, sys_setdomainname)
+
+#ifdef __ARCH_WANT_SET_GET_RLIMIT
+/* getrlimit and setrlimit are superseded with prlimit64 */
#define __NR_getrlimit 163
__SC_COMP(__NR_getrlimit, sys_getrlimit, compat_sys_getrlimit)
#define __NR_setrlimit 164
__SC_COMP(__NR_setrlimit, sys_setrlimit, compat_sys_setrlimit)
+#endif
+
#define __NR_getrusage 165
__SC_COMP(__NR_getrusage, sys_getrusage, compat_sys_getrusage)
#define __NR_umask 166
diff --git a/scripts/checksyscalls.sh b/scripts/checksyscalls.sh
index 5a387a264201..566275e64274 100755
--- a/scripts/checksyscalls.sh
+++ b/scripts/checksyscalls.sh
@@ -37,6 +37,11 @@ cat << EOF
#define __IGNORE_lstat64 /* fstatat64 */
#endif
+#ifndef __ARCH_WANT_SET_GET_RLIMIT
+#define __IGNORE_getrlimit /* getrlimit */
+#define __IGNORE_setrlimit /* setrlimit */
+#endif
+
/* Missing flags argument */
#define __IGNORE_renameat /* renameat2 */
--
2.11.0
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