From 80d7da1cac62f28b3df4880e8143b39cabb4b59a Mon Sep 17 00:00:00 2001 From: Yury Norov Date: Wed, 16 May 2018 11:18:50 +0300 Subject: [PATCH] asm-generic: Drop getrlimit and setrlimit syscalls from default list The newer prlimit64 syscall provides all the functionality of 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 Cc: linux-arch@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-hexagon@vger.kernel.org Cc: uclinux-h8-devel@lists.sourceforge.jp Signed-off-by: Yury Norov Acked-by: Arnd Bergmann Acked-by: Mark Salter [c6x] Acked-by: James Hogan [metag] Acked-by: Ley Foon Tan [nios2] Acked-by: Stafford Horne [openrisc] Acked-by: Will Deacon [arm64] Acked-by: Vineet Gupta #arch/arc bits Signed-off-by: Yury Norov Signed-off-by: Arnd Bergmann --- 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/csky/include/uapi/asm/unistd.h | 1 + arch/h8300/include/uapi/asm/unistd.h | 1 + arch/hexagon/include/uapi/asm/unistd.h | 1 + arch/nds32/include/uapi/asm/unistd.h | 1 + arch/nios2/include/uapi/asm/unistd.h | 1 + arch/openrisc/include/uapi/asm/unistd.h | 1 + arch/riscv/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 3b3543fd151c..6a1a62a979dd 100644 --- a/arch/arc/include/uapi/asm/unistd.h +++ b/arch/arc/include/uapi/asm/unistd.h @@ -18,6 +18,7 @@ #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 diff --git a/arch/arm64/include/uapi/asm/unistd.h b/arch/arm64/include/uapi/asm/unistd.h index dae1584cf017..79937de2a0cc 100644 --- a/arch/arm64/include/uapi/asm/unistd.h +++ b/arch/arm64/include/uapi/asm/unistd.h @@ -17,5 +17,6 @@ #define __ARCH_WANT_RENAMEAT #define __ARCH_WANT_NEW_STAT +#define __ARCH_WANT_SET_GET_RLIMIT #include diff --git a/arch/c6x/include/uapi/asm/unistd.h b/arch/c6x/include/uapi/asm/unistd.h index 6b2fe792de9d..e3721b2cfd6a 100644 --- a/arch/c6x/include/uapi/asm/unistd.h +++ b/arch/c6x/include/uapi/asm/unistd.h @@ -17,6 +17,7 @@ #define __ARCH_WANT_RENAMEAT #define __ARCH_WANT_STAT64 +#define __ARCH_WANT_SET_GET_RLIMIT #define __ARCH_WANT_SYS_CLONE /* Use the standard ABI for syscalls. */ diff --git a/arch/csky/include/uapi/asm/unistd.h b/arch/csky/include/uapi/asm/unistd.h index 224c9a9ab45b..f5c83492136f 100644 --- a/arch/csky/include/uapi/asm/unistd.h +++ b/arch/csky/include/uapi/asm/unistd.h @@ -2,6 +2,7 @@ // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. #define __ARCH_WANT_SYS_CLONE +#define __ARCH_WANT_SET_GET_RLIMIT #include #define __NR_set_thread_area (__NR_arch_specific_syscall + 0) diff --git a/arch/h8300/include/uapi/asm/unistd.h b/arch/h8300/include/uapi/asm/unistd.h index 628195823816..b9e9352f2328 100644 --- a/arch/h8300/include/uapi/asm/unistd.h +++ b/arch/h8300/include/uapi/asm/unistd.h @@ -2,5 +2,6 @@ #define __ARCH_WANT_RENAMEAT #define __ARCH_WANT_STAT64 +#define __ARCH_WANT_SET_GET_RLIMIT #include diff --git a/arch/hexagon/include/uapi/asm/unistd.h b/arch/hexagon/include/uapi/asm/unistd.h index c91ca7d02461..6bb392a33c35 100644 --- a/arch/hexagon/include/uapi/asm/unistd.h +++ b/arch/hexagon/include/uapi/asm/unistd.h @@ -30,6 +30,7 @@ #define sys_mmap2 sys_mmap_pgoff #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 diff --git a/arch/nds32/include/uapi/asm/unistd.h b/arch/nds32/include/uapi/asm/unistd.h index c2c3a3e34083..eb98d24d3190 100644 --- a/arch/nds32/include/uapi/asm/unistd.h +++ b/arch/nds32/include/uapi/asm/unistd.h @@ -3,6 +3,7 @@ #define __ARCH_WANT_STAT64 #define __ARCH_WANT_SYNC_FILE_RANGE2 +#define __ARCH_WANT_SET_GET_RLIMIT /* 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 d9948d88790b..fa68e68bc26d 100644 --- a/arch/nios2/include/uapi/asm/unistd.h +++ b/arch/nios2/include/uapi/asm/unistd.h @@ -20,6 +20,7 @@ #define __ARCH_WANT_RENAMEAT #define __ARCH_WANT_STAT64 +#define __ARCH_WANT_SET_GET_RLIMIT /* 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 ec37df18d8ed..2e0bc0ff9f31 100644 --- a/arch/openrisc/include/uapi/asm/unistd.h +++ b/arch/openrisc/include/uapi/asm/unistd.h @@ -21,6 +21,7 @@ #define __ARCH_WANT_RENAMEAT #define __ARCH_WANT_STAT64 +#define __ARCH_WANT_SET_GET_RLIMIT #define __ARCH_WANT_SYS_FORK #define __ARCH_WANT_SYS_CLONE diff --git a/arch/riscv/include/uapi/asm/unistd.h b/arch/riscv/include/uapi/asm/unistd.h index 1f3bd3ebbb0d..d9340c52e7ad 100644 --- a/arch/riscv/include/uapi/asm/unistd.h +++ b/arch/riscv/include/uapi/asm/unistd.h @@ -18,6 +18,7 @@ #ifdef __LP64__ #define __ARCH_WANT_NEW_STAT #endif /* __LP64__ */ +#define __ARCH_WANT_SET_GET_RLIMIT #include diff --git a/arch/unicore32/include/uapi/asm/unistd.h b/arch/unicore32/include/uapi/asm/unistd.h index 1e8fe5941b8a..2b575c0cf177 100644 --- a/arch/unicore32/include/uapi/asm/unistd.h +++ b/arch/unicore32/include/uapi/asm/unistd.h @@ -12,6 +12,7 @@ */ #define __ARCH_WANT_RENAMEAT +#define __ARCH_WANT_SET_GET_RLIMIT /* Use the standard ABI for syscalls. */ #include diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index b928eff3bf92..2cdf600b05fa 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -467,10 +467,15 @@ __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 cc70a64fa81f..53c5677d7e82 100755 --- a/scripts/checksyscalls.sh +++ b/scripts/checksyscalls.sh @@ -38,6 +38,11 @@ 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 */