From patchwork Tue Jun 16 03:07:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoming Ni X-Patchwork-Id: 1309990 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 49mGS172bVz9sR4 for ; Tue, 16 Jun 2020 15:08:17 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=huawei.com Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 49mGS15dTyzDqlp for ; Tue, 16 Jun 2020 15:08:17 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=huawei.com (client-ip=45.249.212.35; helo=huawei.com; envelope-from=nixiaoming@huawei.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=huawei.com Received: from huawei.com (szxga07-in.huawei.com [45.249.212.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 49mCn60052zDqSc for ; Tue, 16 Jun 2020 13:07:53 +1000 (AEST) Received: from DGGEMS401-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 9AE7864955D9665B464A; Tue, 16 Jun 2020 11:07:46 +0800 (CST) Received: from use12-sp2.huawei.com (10.67.189.174) by DGGEMS401-HUB.china.huawei.com (10.3.19.201) with Microsoft SMTP Server id 14.3.487.0; Tue, 16 Jun 2020 11:07:36 +0800 From: Xiaoming Ni To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3] All arch: remove system call sys_sysctl Date: Tue, 16 Jun 2020 11:07:34 +0800 Message-ID: <20200616030734.87257-1-nixiaoming@huawei.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 X-Originating-IP: [10.67.189.174] X-CFilter-Loop: Reflected X-Mailman-Approved-At: Tue, 16 Jun 2020 15:06:54 +1000 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-s390@vger.kernel.org, linux-ia64@vger.kernel.org, linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, linux-api@vger.kernel.org, linux-xtensa@linux-xtensa.org, x86@kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, alex.huangjianhui@huawei.com, linux-alpha@vger.kernel.org, sparclinux@vger.kernel.org, chenzefeng2@huawei.com, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Since the commit 61a47c1ad3a4dc ("sysctl: Remove the sysctl system call"), sys_sysctl is actually unavailable: any input can only return an error. We have been warning about people using the sysctl system call for years and believe there are no more users. Even if there are users of this interface if they have not complained or fixed their code by now they probably are not going to, so there is no point in warning them any longer. So completely remove sys_sysctl on all architectures. Signed-off-by: Xiaoming Ni Acked-by: Will Deacon Acked-by: "Eric W. Biederman" changes in v3: restore include/uapi/linux/sysctl.h rebase on commit bc7d17d55762 ("Add linux-next specific files for 20200615") Conflicts: arch/sh/include/uapi/asm/unistd_64.h arch/sh/kernel/syscalls_64.S v2: According to Kees Cook's suggestion, completely remove sys_sysctl on all arch According to Eric W. Biederman's suggestion, update the commit log V1: https://lore.kernel.org/lkml/1591683605-8585-1-git-send-email-nixiaoming@huawei.com/ Delete the code of sys_sysctl and return -ENOSYS directly at the function entry --- arch/alpha/kernel/syscalls/syscall.tbl | 2 +- arch/arm/configs/am200epdkit_defconfig | 1 - arch/arm/tools/syscall.tbl | 2 +- arch/arm64/include/asm/unistd32.h | 4 +- arch/ia64/kernel/syscalls/syscall.tbl | 2 +- arch/m68k/kernel/syscalls/syscall.tbl | 2 +- arch/microblaze/kernel/syscalls/syscall.tbl | 2 +- arch/mips/configs/cu1000-neo_defconfig | 1 - arch/mips/kernel/syscalls/syscall_n32.tbl | 2 +- arch/mips/kernel/syscalls/syscall_n64.tbl | 2 +- arch/mips/kernel/syscalls/syscall_o32.tbl | 2 +- arch/parisc/kernel/syscalls/syscall.tbl | 2 +- arch/powerpc/kernel/syscalls/syscall.tbl | 2 +- arch/s390/kernel/syscalls/syscall.tbl | 2 +- arch/sh/configs/dreamcast_defconfig | 1 - arch/sh/configs/espt_defconfig | 1 - arch/sh/configs/hp6xx_defconfig | 1 - arch/sh/configs/landisk_defconfig | 1 - arch/sh/configs/lboxre2_defconfig | 1 - arch/sh/configs/microdev_defconfig | 1 - arch/sh/configs/migor_defconfig | 1 - arch/sh/configs/r7780mp_defconfig | 1 - arch/sh/configs/r7785rp_defconfig | 1 - arch/sh/configs/rts7751r2d1_defconfig | 1 - arch/sh/configs/rts7751r2dplus_defconfig | 1 - arch/sh/configs/se7206_defconfig | 1 - arch/sh/configs/se7343_defconfig | 1 - arch/sh/configs/se7619_defconfig | 1 - arch/sh/configs/se7705_defconfig | 1 - arch/sh/configs/se7750_defconfig | 1 - arch/sh/configs/se7751_defconfig | 1 - arch/sh/configs/secureedge5410_defconfig | 1 - arch/sh/configs/sh03_defconfig | 1 - arch/sh/configs/sh7710voipgw_defconfig | 1 - arch/sh/configs/sh7757lcr_defconfig | 1 - arch/sh/configs/sh7763rdp_defconfig | 1 - arch/sh/configs/shmin_defconfig | 1 - arch/sh/configs/titan_defconfig | 1 - arch/sh/kernel/syscalls/syscall.tbl | 2 +- arch/sparc/kernel/syscalls/syscall.tbl | 2 +- arch/x86/entry/syscalls/syscall_32.tbl | 2 +- arch/x86/entry/syscalls/syscall_64.tbl | 2 +- arch/xtensa/kernel/syscalls/syscall.tbl | 2 +- include/linux/compat.h | 1 - include/linux/syscalls.h | 2 - include/linux/sysctl.h | 6 +- kernel/Makefile | 2 +- kernel/sys_ni.c | 1 - kernel/sysctl_binary.c | 171 ------------------ .../arch/powerpc/entry/syscalls/syscall.tbl | 2 +- .../perf/arch/s390/entry/syscalls/syscall.tbl | 2 +- .../arch/x86/entry/syscalls/syscall_64.tbl | 2 +- 52 files changed, 24 insertions(+), 227 deletions(-) delete mode 100644 kernel/sysctl_binary.c diff --git a/arch/alpha/kernel/syscalls/syscall.tbl b/arch/alpha/kernel/syscalls/syscall.tbl index b249824c8267..0da7f1c61529 100644 --- a/arch/alpha/kernel/syscalls/syscall.tbl +++ b/arch/alpha/kernel/syscalls/syscall.tbl @@ -249,7 +249,7 @@ 316 common mlockall sys_mlockall 317 common munlockall sys_munlockall 318 common sysinfo sys_sysinfo -319 common _sysctl sys_sysctl +319 common _sysctl sys_ni_syscall # 320 was sys_idle 321 common oldumount sys_oldumount 322 common swapon sys_swapon diff --git a/arch/arm/configs/am200epdkit_defconfig b/arch/arm/configs/am200epdkit_defconfig index f56ac394caf1..4e49d6cb2f62 100644 --- a/arch/arm/configs/am200epdkit_defconfig +++ b/arch/arm/configs/am200epdkit_defconfig @@ -3,7 +3,6 @@ CONFIG_LOCALVERSION="gum" CONFIG_SYSVIPC=y CONFIG_SYSFS_DEPRECATED_V2=y CONFIG_EXPERT=y -# CONFIG_SYSCTL_SYSCALL is not set # CONFIG_EPOLL is not set # CONFIG_SHMEM is not set # CONFIG_VM_EVENT_COUNTERS is not set diff --git a/arch/arm/tools/syscall.tbl b/arch/arm/tools/syscall.tbl index 7b3832d920ee..f36fda68fbe0 100644 --- a/arch/arm/tools/syscall.tbl +++ b/arch/arm/tools/syscall.tbl @@ -162,7 +162,7 @@ 146 common writev sys_writev 147 common getsid sys_getsid 148 common fdatasync sys_fdatasync -149 common _sysctl sys_sysctl +149 common _sysctl sys_ni_syscall 150 common mlock sys_mlock 151 common munlock sys_munlock 152 common mlockall sys_mlockall diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h index f8dafe900cb9..ca41bb747e9d 100644 --- a/arch/arm64/include/asm/unistd32.h +++ b/arch/arm64/include/asm/unistd32.h @@ -308,8 +308,8 @@ __SYSCALL(__NR_writev, compat_sys_writev) __SYSCALL(__NR_getsid, sys_getsid) #define __NR_fdatasync 148 __SYSCALL(__NR_fdatasync, sys_fdatasync) -#define __NR__sysctl 149 -__SYSCALL(__NR__sysctl, compat_sys_sysctl) + /* 149 was sys_sysctl */ +__SYSCALL(149, sys_ni_syscall) #define __NR_mlock 150 __SYSCALL(__NR_mlock, sys_mlock) #define __NR_munlock 151 diff --git a/arch/ia64/kernel/syscalls/syscall.tbl b/arch/ia64/kernel/syscalls/syscall.tbl index 6636a1aef36b..75b880b8516f 100644 --- a/arch/ia64/kernel/syscalls/syscall.tbl +++ b/arch/ia64/kernel/syscalls/syscall.tbl @@ -135,7 +135,7 @@ 123 common writev sys_writev 124 common pread64 sys_pread64 125 common pwrite64 sys_pwrite64 -126 common _sysctl sys_sysctl +126 common _sysctl sys_ni_syscall 127 common mmap sys_mmap 128 common munmap sys_munmap 129 common mlock sys_mlock diff --git a/arch/m68k/kernel/syscalls/syscall.tbl b/arch/m68k/kernel/syscalls/syscall.tbl index 8cd84a7fbf57..91b21ad18d2d 100644 --- a/arch/m68k/kernel/syscalls/syscall.tbl +++ b/arch/m68k/kernel/syscalls/syscall.tbl @@ -156,7 +156,7 @@ 146 common writev sys_writev 147 common getsid sys_getsid 148 common fdatasync sys_fdatasync -149 common _sysctl sys_sysctl +149 common _sysctl sys_ni_syscall 150 common mlock sys_mlock 151 common munlock sys_munlock 152 common mlockall sys_mlockall diff --git a/arch/microblaze/kernel/syscalls/syscall.tbl b/arch/microblaze/kernel/syscalls/syscall.tbl index f581a02257ec..dc5f9fb0dac1 100644 --- a/arch/microblaze/kernel/syscalls/syscall.tbl +++ b/arch/microblaze/kernel/syscalls/syscall.tbl @@ -156,7 +156,7 @@ 146 common writev sys_writev 147 common getsid sys_getsid 148 common fdatasync sys_fdatasync -149 common _sysctl sys_sysctl +149 common _sysctl sys_ni_syscall 150 common mlock sys_mlock 151 common munlock sys_munlock 152 common mlockall sys_mlockall diff --git a/arch/mips/configs/cu1000-neo_defconfig b/arch/mips/configs/cu1000-neo_defconfig index 9b05a8fdabe1..244654ce7e7c 100644 --- a/arch/mips/configs/cu1000-neo_defconfig +++ b/arch/mips/configs/cu1000-neo_defconfig @@ -17,7 +17,6 @@ CONFIG_CGROUP_CPUACCT=y CONFIG_NAMESPACES=y CONFIG_USER_NS=y CONFIG_CC_OPTIMIZE_FOR_SIZE=y -CONFIG_SYSCTL_SYSCALL=y CONFIG_KALLSYMS_ALL=y CONFIG_EMBEDDED=y # CONFIG_VM_EVENT_COUNTERS is not set diff --git a/arch/mips/kernel/syscalls/syscall_n32.tbl b/arch/mips/kernel/syscalls/syscall_n32.tbl index c85bdc3abe55..2653b28167ba 100644 --- a/arch/mips/kernel/syscalls/syscall_n32.tbl +++ b/arch/mips/kernel/syscalls/syscall_n32.tbl @@ -159,7 +159,7 @@ 149 n32 munlockall sys_munlockall 150 n32 vhangup sys_vhangup 151 n32 pivot_root sys_pivot_root -152 n32 _sysctl compat_sys_sysctl +152 n32 _sysctl sys_ni_syscall 153 n32 prctl sys_prctl 154 n32 adjtimex sys_adjtimex_time32 155 n32 setrlimit compat_sys_setrlimit diff --git a/arch/mips/kernel/syscalls/syscall_n64.tbl b/arch/mips/kernel/syscalls/syscall_n64.tbl index 9e08c40d3cb9..a4fd3bfc840f 100644 --- a/arch/mips/kernel/syscalls/syscall_n64.tbl +++ b/arch/mips/kernel/syscalls/syscall_n64.tbl @@ -159,7 +159,7 @@ 149 n64 munlockall sys_munlockall 150 n64 vhangup sys_vhangup 151 n64 pivot_root sys_pivot_root -152 n64 _sysctl sys_sysctl +152 n64 _sysctl sys_ni_syscall 153 n64 prctl sys_prctl 154 n64 adjtimex sys_adjtimex 155 n64 setrlimit sys_setrlimit diff --git a/arch/mips/kernel/syscalls/syscall_o32.tbl b/arch/mips/kernel/syscalls/syscall_o32.tbl index a2b591d7c874..a30cfd414147 100644 --- a/arch/mips/kernel/syscalls/syscall_o32.tbl +++ b/arch/mips/kernel/syscalls/syscall_o32.tbl @@ -164,7 +164,7 @@ 150 o32 unused150 sys_ni_syscall 151 o32 getsid sys_getsid 152 o32 fdatasync sys_fdatasync -153 o32 _sysctl sys_sysctl compat_sys_sysctl +153 o32 _sysctl sys_ni_syscall 154 o32 mlock sys_mlock 155 o32 munlock sys_munlock 156 o32 mlockall sys_mlockall diff --git a/arch/parisc/kernel/syscalls/syscall.tbl b/arch/parisc/kernel/syscalls/syscall.tbl index 98e7442e4d7a..a47bc1906be5 100644 --- a/arch/parisc/kernel/syscalls/syscall.tbl +++ b/arch/parisc/kernel/syscalls/syscall.tbl @@ -163,7 +163,7 @@ 146 common writev sys_writev compat_sys_writev 147 common getsid sys_getsid 148 common fdatasync sys_fdatasync -149 common _sysctl sys_sysctl compat_sys_sysctl +149 common _sysctl sys_ni_syscall 150 common mlock sys_mlock 151 common munlock sys_munlock 152 common mlockall sys_mlockall diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl b/arch/powerpc/kernel/syscalls/syscall.tbl index 72fb9dd88e16..a60163f22d89 100644 --- a/arch/powerpc/kernel/syscalls/syscall.tbl +++ b/arch/powerpc/kernel/syscalls/syscall.tbl @@ -197,7 +197,7 @@ 146 common writev sys_writev compat_sys_writev 147 common getsid sys_getsid 148 common fdatasync sys_fdatasync -149 nospu _sysctl sys_sysctl compat_sys_sysctl +149 nospu _sysctl sys_ni_syscall 150 common mlock sys_mlock 151 common munlock sys_munlock 152 common mlockall sys_mlockall diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl index b731fcb03f1b..f17aaf6fe5de 100644 --- a/arch/s390/kernel/syscalls/syscall.tbl +++ b/arch/s390/kernel/syscalls/syscall.tbl @@ -138,7 +138,7 @@ 146 common writev sys_writev compat_sys_writev 147 common getsid sys_getsid sys_getsid 148 common fdatasync sys_fdatasync sys_fdatasync -149 common _sysctl sys_sysctl compat_sys_sysctl +149 common _sysctl sys_ni_syscall 150 common mlock sys_mlock sys_mlock 151 common munlock sys_munlock sys_munlock 152 common mlockall sys_mlockall sys_mlockall diff --git a/arch/sh/configs/dreamcast_defconfig b/arch/sh/configs/dreamcast_defconfig index ae067e0b15e3..6a82c7b8ff32 100644 --- a/arch/sh/configs/dreamcast_defconfig +++ b/arch/sh/configs/dreamcast_defconfig @@ -1,7 +1,6 @@ CONFIG_SYSVIPC=y CONFIG_BSD_PROCESS_ACCT=y CONFIG_LOG_BUF_SHIFT=14 -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_SLAB=y CONFIG_PROFILING=y CONFIG_MODULES=y diff --git a/arch/sh/configs/espt_defconfig b/arch/sh/configs/espt_defconfig index a5b865a75d22..9a988c347e9d 100644 --- a/arch/sh/configs/espt_defconfig +++ b/arch/sh/configs/espt_defconfig @@ -5,7 +5,6 @@ CONFIG_LOG_BUF_SHIFT=14 CONFIG_NAMESPACES=y CONFIG_UTS_NS=y CONFIG_IPC_NS=y -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_SLAB=y CONFIG_PROFILING=y CONFIG_OPROFILE=y diff --git a/arch/sh/configs/hp6xx_defconfig b/arch/sh/configs/hp6xx_defconfig index a92db6694ce2..70e6605d7f7e 100644 --- a/arch/sh/configs/hp6xx_defconfig +++ b/arch/sh/configs/hp6xx_defconfig @@ -3,7 +3,6 @@ CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=14 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_SLAB=y # CONFIG_BLK_DEV_BSG is not set CONFIG_CPU_SUBTYPE_SH7709=y diff --git a/arch/sh/configs/landisk_defconfig b/arch/sh/configs/landisk_defconfig index 567af752b1bb..ba6ec042606f 100644 --- a/arch/sh/configs/landisk_defconfig +++ b/arch/sh/configs/landisk_defconfig @@ -1,6 +1,5 @@ CONFIG_SYSVIPC=y CONFIG_LOG_BUF_SHIFT=14 -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_KALLSYMS_EXTRA_PASS=y CONFIG_SLAB=y CONFIG_MODULES=y diff --git a/arch/sh/configs/lboxre2_defconfig b/arch/sh/configs/lboxre2_defconfig index 10f6d371ce2c..05e4ac6fed5f 100644 --- a/arch/sh/configs/lboxre2_defconfig +++ b/arch/sh/configs/lboxre2_defconfig @@ -1,6 +1,5 @@ CONFIG_SYSVIPC=y CONFIG_LOG_BUF_SHIFT=14 -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_KALLSYMS_EXTRA_PASS=y CONFIG_SLAB=y CONFIG_MODULES=y diff --git a/arch/sh/configs/microdev_defconfig b/arch/sh/configs/microdev_defconfig index ed84d1303acf..c65667d00313 100644 --- a/arch/sh/configs/microdev_defconfig +++ b/arch/sh/configs/microdev_defconfig @@ -2,7 +2,6 @@ CONFIG_BSD_PROCESS_ACCT=y CONFIG_LOG_BUF_SHIFT=14 CONFIG_BLK_DEV_INITRD=y # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_SLAB=y # CONFIG_BLK_DEV_BSG is not set CONFIG_CPU_SUBTYPE_SH4_202=y diff --git a/arch/sh/configs/migor_defconfig b/arch/sh/configs/migor_defconfig index 494a1675c226..dec9316f65d5 100644 --- a/arch/sh/configs/migor_defconfig +++ b/arch/sh/configs/migor_defconfig @@ -4,7 +4,6 @@ CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=14 CONFIG_BLK_DEV_INITRD=y # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_SLAB=y CONFIG_PROFILING=y CONFIG_OPROFILE=y diff --git a/arch/sh/configs/r7780mp_defconfig b/arch/sh/configs/r7780mp_defconfig index c97ec60cff27..e922659fdadb 100644 --- a/arch/sh/configs/r7780mp_defconfig +++ b/arch/sh/configs/r7780mp_defconfig @@ -3,7 +3,6 @@ CONFIG_BSD_PROCESS_ACCT=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=14 -# CONFIG_SYSCTL_SYSCALL is not set # CONFIG_FUTEX is not set # CONFIG_EPOLL is not set CONFIG_SLAB=y diff --git a/arch/sh/configs/r7785rp_defconfig b/arch/sh/configs/r7785rp_defconfig index 55fce65eb454..5978866358ec 100644 --- a/arch/sh/configs/r7785rp_defconfig +++ b/arch/sh/configs/r7785rp_defconfig @@ -7,7 +7,6 @@ CONFIG_RCU_TRACE=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=14 -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_SLAB=y CONFIG_PROFILING=y CONFIG_OPROFILE=y diff --git a/arch/sh/configs/rts7751r2d1_defconfig b/arch/sh/configs/rts7751r2d1_defconfig index 6a3cfe08295f..fc9c22152b08 100644 --- a/arch/sh/configs/rts7751r2d1_defconfig +++ b/arch/sh/configs/rts7751r2d1_defconfig @@ -1,7 +1,6 @@ CONFIG_SYSVIPC=y CONFIG_LOG_BUF_SHIFT=14 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_SLAB=y CONFIG_PROFILING=y CONFIG_OPROFILE=y diff --git a/arch/sh/configs/rts7751r2dplus_defconfig b/arch/sh/configs/rts7751r2dplus_defconfig index 2b3d7d280672..ff3fd6787fd6 100644 --- a/arch/sh/configs/rts7751r2dplus_defconfig +++ b/arch/sh/configs/rts7751r2dplus_defconfig @@ -1,7 +1,6 @@ CONFIG_SYSVIPC=y CONFIG_LOG_BUF_SHIFT=14 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_SLAB=y CONFIG_PROFILING=y CONFIG_OPROFILE=y diff --git a/arch/sh/configs/se7206_defconfig b/arch/sh/configs/se7206_defconfig index 21a43f14ffac..ff5bb4489922 100644 --- a/arch/sh/configs/se7206_defconfig +++ b/arch/sh/configs/se7206_defconfig @@ -18,7 +18,6 @@ CONFIG_USER_NS=y CONFIG_PID_NS=y CONFIG_BLK_DEV_INITRD=y # CONFIG_UID16 is not set -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_KALLSYMS_ALL=y # CONFIG_ELF_CORE is not set # CONFIG_COMPAT_BRK is not set diff --git a/arch/sh/configs/se7343_defconfig b/arch/sh/configs/se7343_defconfig index 4e794e719a28..5d6c19338ebf 100644 --- a/arch/sh/configs/se7343_defconfig +++ b/arch/sh/configs/se7343_defconfig @@ -2,7 +2,6 @@ CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y CONFIG_LOG_BUF_SHIFT=14 -# CONFIG_SYSCTL_SYSCALL is not set # CONFIG_FUTEX is not set # CONFIG_EPOLL is not set # CONFIG_SHMEM is not set diff --git a/arch/sh/configs/se7619_defconfig b/arch/sh/configs/se7619_defconfig index 3264415a5931..71a672c30716 100644 --- a/arch/sh/configs/se7619_defconfig +++ b/arch/sh/configs/se7619_defconfig @@ -1,7 +1,6 @@ # CONFIG_LOCALVERSION_AUTO is not set CONFIG_LOG_BUF_SHIFT=14 # CONFIG_UID16 is not set -# CONFIG_SYSCTL_SYSCALL is not set # CONFIG_KALLSYMS is not set # CONFIG_HOTPLUG is not set # CONFIG_ELF_CORE is not set diff --git a/arch/sh/configs/se7705_defconfig b/arch/sh/configs/se7705_defconfig index 4496b94b7d88..ed00a6eeadf5 100644 --- a/arch/sh/configs/se7705_defconfig +++ b/arch/sh/configs/se7705_defconfig @@ -2,7 +2,6 @@ CONFIG_LOG_BUF_SHIFT=14 CONFIG_BLK_DEV_INITRD=y # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set -# CONFIG_SYSCTL_SYSCALL is not set # CONFIG_KALLSYMS is not set # CONFIG_HOTPLUG is not set CONFIG_SLAB=y diff --git a/arch/sh/configs/se7750_defconfig b/arch/sh/configs/se7750_defconfig index b23f67542728..3f1c13799d79 100644 --- a/arch/sh/configs/se7750_defconfig +++ b/arch/sh/configs/se7750_defconfig @@ -5,7 +5,6 @@ CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=14 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set -# CONFIG_SYSCTL_SYSCALL is not set # CONFIG_HOTPLUG is not set CONFIG_SLAB=y CONFIG_MODULES=y diff --git a/arch/sh/configs/se7751_defconfig b/arch/sh/configs/se7751_defconfig index 162343683937..4a024065bb75 100644 --- a/arch/sh/configs/se7751_defconfig +++ b/arch/sh/configs/se7751_defconfig @@ -3,7 +3,6 @@ CONFIG_BSD_PROCESS_ACCT=y CONFIG_LOG_BUF_SHIFT=14 CONFIG_BLK_DEV_INITRD=y # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set -# CONFIG_SYSCTL_SYSCALL is not set # CONFIG_HOTPLUG is not set CONFIG_SLAB=y CONFIG_MODULES=y diff --git a/arch/sh/configs/secureedge5410_defconfig b/arch/sh/configs/secureedge5410_defconfig index 360592d63a2f..8422599cfb04 100644 --- a/arch/sh/configs/secureedge5410_defconfig +++ b/arch/sh/configs/secureedge5410_defconfig @@ -1,7 +1,6 @@ # CONFIG_SWAP is not set CONFIG_LOG_BUF_SHIFT=14 CONFIG_BLK_DEV_INITRD=y -# CONFIG_SYSCTL_SYSCALL is not set # CONFIG_HOTPLUG is not set CONFIG_SLAB=y # CONFIG_BLK_DEV_BSG is not set diff --git a/arch/sh/configs/sh03_defconfig b/arch/sh/configs/sh03_defconfig index 87db9a84b5ec..f0073ed39947 100644 --- a/arch/sh/configs/sh03_defconfig +++ b/arch/sh/configs/sh03_defconfig @@ -3,7 +3,6 @@ CONFIG_POSIX_MQUEUE=y CONFIG_BSD_PROCESS_ACCT=y CONFIG_LOG_BUF_SHIFT=14 CONFIG_BLK_DEV_INITRD=y -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_SLAB=y CONFIG_PROFILING=y CONFIG_OPROFILE=m diff --git a/arch/sh/configs/sh7710voipgw_defconfig b/arch/sh/configs/sh7710voipgw_defconfig index 08426913c0e3..0d814770b07f 100644 --- a/arch/sh/configs/sh7710voipgw_defconfig +++ b/arch/sh/configs/sh7710voipgw_defconfig @@ -2,7 +2,6 @@ CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y CONFIG_LOG_BUF_SHIFT=14 -# CONFIG_SYSCTL_SYSCALL is not set # CONFIG_FUTEX is not set # CONFIG_EPOLL is not set # CONFIG_SHMEM is not set diff --git a/arch/sh/configs/sh7757lcr_defconfig b/arch/sh/configs/sh7757lcr_defconfig index d0933a9b9799..a2700ab165af 100644 --- a/arch/sh/configs/sh7757lcr_defconfig +++ b/arch/sh/configs/sh7757lcr_defconfig @@ -8,7 +8,6 @@ CONFIG_TASK_XACCT=y CONFIG_TASK_IO_ACCOUNTING=y CONFIG_LOG_BUF_SHIFT=14 CONFIG_BLK_DEV_INITRD=y -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_KALLSYMS_ALL=y CONFIG_SLAB=y CONFIG_MODULES=y diff --git a/arch/sh/configs/sh7763rdp_defconfig b/arch/sh/configs/sh7763rdp_defconfig index d0a0aa74cecf..26c5fd02c87a 100644 --- a/arch/sh/configs/sh7763rdp_defconfig +++ b/arch/sh/configs/sh7763rdp_defconfig @@ -5,7 +5,6 @@ CONFIG_LOG_BUF_SHIFT=14 CONFIG_NAMESPACES=y CONFIG_UTS_NS=y CONFIG_IPC_NS=y -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_SLAB=y CONFIG_PROFILING=y CONFIG_OPROFILE=y diff --git a/arch/sh/configs/shmin_defconfig b/arch/sh/configs/shmin_defconfig index a27b129b93c5..c0b6f40d01cc 100644 --- a/arch/sh/configs/shmin_defconfig +++ b/arch/sh/configs/shmin_defconfig @@ -1,7 +1,6 @@ # CONFIG_SWAP is not set CONFIG_LOG_BUF_SHIFT=14 # CONFIG_UID16 is not set -# CONFIG_SYSCTL_SYSCALL is not set # CONFIG_KALLSYMS is not set # CONFIG_HOTPLUG is not set # CONFIG_BUG is not set diff --git a/arch/sh/configs/titan_defconfig b/arch/sh/configs/titan_defconfig index 4ec961ace688..ba887f1351be 100644 --- a/arch/sh/configs/titan_defconfig +++ b/arch/sh/configs/titan_defconfig @@ -6,7 +6,6 @@ CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=16 CONFIG_BLK_DEV_INITRD=y # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set -# CONFIG_SYSCTL_SYSCALL is not set CONFIG_SLAB=y CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y diff --git a/arch/sh/kernel/syscalls/syscall.tbl b/arch/sh/kernel/syscalls/syscall.tbl index e7a4804e23cf..745684512d5b 100644 --- a/arch/sh/kernel/syscalls/syscall.tbl +++ b/arch/sh/kernel/syscalls/syscall.tbl @@ -156,7 +156,7 @@ 146 common writev sys_writev 147 common getsid sys_getsid 148 common fdatasync sys_fdatasync -149 common _sysctl sys_sysctl +149 common _sysctl sys_ni_syscall 150 common mlock sys_mlock 151 common munlock sys_munlock 152 common mlockall sys_mlockall diff --git a/arch/sparc/kernel/syscalls/syscall.tbl b/arch/sparc/kernel/syscalls/syscall.tbl index d6126ee2f51d..74adaeca2d89 100644 --- a/arch/sparc/kernel/syscalls/syscall.tbl +++ b/arch/sparc/kernel/syscalls/syscall.tbl @@ -300,7 +300,7 @@ 249 64 nanosleep sys_nanosleep 250 32 mremap sys_mremap 250 64 mremap sys_64_mremap -251 common _sysctl sys_sysctl compat_sys_sysctl +251 common _sysctl sys_ni_syscall 252 common getsid sys_getsid 253 common fdatasync sys_fdatasync 254 32 nfsservctl sys_ni_syscall sys_nis_syscall diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index 686d59df1e12..ef76360bc5e9 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -160,7 +160,7 @@ 146 i386 writev sys_writev compat_sys_writev 147 i386 getsid sys_getsid 148 i386 fdatasync sys_fdatasync -149 i386 _sysctl sys_sysctl compat_sys_sysctl +149 i386 _sysctl sys_ni_syscall 150 i386 mlock sys_mlock 151 i386 munlock sys_munlock 152 i386 mlockall sys_mlockall diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index b345b35b3308..6a3b0b3ffbaa 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -164,7 +164,7 @@ 153 common vhangup sys_vhangup 154 common modify_ldt sys_modify_ldt 155 common pivot_root sys_pivot_root -156 64 _sysctl sys_sysctl +156 64 _sysctl sys_ni_syscall 157 common prctl sys_prctl 158 common arch_prctl sys_arch_prctl 159 common adjtimex sys_adjtimex diff --git a/arch/xtensa/kernel/syscalls/syscall.tbl b/arch/xtensa/kernel/syscalls/syscall.tbl index 96cb07095e4c..34cbbf52d670 100644 --- a/arch/xtensa/kernel/syscalls/syscall.tbl +++ b/arch/xtensa/kernel/syscalls/syscall.tbl @@ -222,7 +222,7 @@ 204 common quotactl sys_quotactl # 205 was old nfsservctl 205 common nfsservctl sys_ni_syscall -206 common _sysctl sys_sysctl +206 common _sysctl sys_ni_syscall 207 common bdflush sys_bdflush 208 common uname sys_newuname 209 common sysinfo sys_sysinfo diff --git a/include/linux/compat.h b/include/linux/compat.h index 86b61e873947..c55d2459809d 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -859,7 +859,6 @@ asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, unsigned flags); -asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args); /* obsolete: fs/readdir.c */ asmlinkage long compat_sys_old_readdir(unsigned int fd, diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 63ffa6dc9da3..915233a188e1 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -48,7 +48,6 @@ struct statfs; struct statfs64; struct statx; struct fsinfo_params; -struct __sysctl_args; struct sysinfo; struct timespec; struct __kernel_old_timeval; @@ -1125,7 +1124,6 @@ asmlinkage long sys_send(int, void __user *, size_t, unsigned); asmlinkage long sys_bdflush(int func, long data); asmlinkage long sys_oldumount(char __user *name); asmlinkage long sys_uselib(const char __user *library); -asmlinkage long sys_sysctl(struct __sysctl_args __user *args); asmlinkage long sys_sysfs(int option, unsigned long arg1, unsigned long arg2); asmlinkage long sys_fork(void); diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 50bb7f383a1b..51298a4f4623 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -74,15 +74,13 @@ int proc_do_static_key(struct ctl_table *table, int write, void *buffer, * sysctl names can be mirrored automatically under /proc/sys. The * procname supplied controls /proc naming. * - * The table's mode will be honoured both for sys_sysctl(2) and - * proc-fs access. + * The table's mode will be honoured for proc-fs access. * * Leaf nodes in the sysctl tree will be represented by a single file * under /proc; non-leaf nodes will be represented by directories. A * null procname disables /proc mirroring at this node. * - * sysctl(2) can automatically manage read and write requests through - * the sysctl table. The data and maxlen fields of the ctl_table + * The data and maxlen fields of the ctl_table * struct enable minimal validation of the values being written to be * performed, and the mode field allows minimal authentication. * diff --git a/kernel/Makefile b/kernel/Makefile index f3218bc5ec69..d13e01b0e07e 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -5,7 +5,7 @@ obj-y = fork.o exec_domain.o panic.o \ cpu.o exit.o softirq.o resource.o \ - sysctl.o sysctl_binary.o capability.o ptrace.o user.o \ + sysctl.o capability.o ptrace.o user.o \ signal.o sys.o umh.o workqueue.o pid.o task_work.o \ extable.o params.o \ kthread.o sys_ni.o nsproxy.o \ diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c index fad48ace1123..c935c1819ba3 100644 --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -373,7 +373,6 @@ COND_SYSCALL(socketcall); COND_SYSCALL_COMPAT(socketcall); /* compat syscalls for arm64, x86, ... */ -COND_SYSCALL_COMPAT(sysctl); COND_SYSCALL_COMPAT(fanotify_mark); /* x86 */ diff --git a/kernel/sysctl_binary.c b/kernel/sysctl_binary.c deleted file mode 100644 index 7d550cc76a3b..000000000000 --- a/kernel/sysctl_binary.c +++ /dev/null @@ -1,171 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include -#include "../fs/xfs/xfs_sysctl.h" -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -static ssize_t binary_sysctl(const int *name, int nlen, - void __user *oldval, size_t oldlen, void __user *newval, size_t newlen) -{ - return -ENOSYS; -} - -static void deprecated_sysctl_warning(const int *name, int nlen) -{ - int i; - - /* - * CTL_KERN/KERN_VERSION is used by older glibc and cannot - * ever go away. - */ - if (nlen >= 2 && name[0] == CTL_KERN && name[1] == KERN_VERSION) - return; - - if (printk_ratelimit()) { - printk(KERN_INFO - "warning: process `%s' used the deprecated sysctl " - "system call with ", current->comm); - for (i = 0; i < nlen; i++) - printk(KERN_CONT "%d.", name[i]); - printk(KERN_CONT "\n"); - } - return; -} - -#define WARN_ONCE_HASH_BITS 8 -#define WARN_ONCE_HASH_SIZE (1<nlen. */ - if (nlen < 0 || nlen > CTL_MAXNAME) - return -ENOTDIR; - /* Read in the sysctl name for simplicity */ - for (i = 0; i < nlen; i++) - if (get_user(name[i], args_name + i)) - return -EFAULT; - - warn_on_bintable(name, nlen); - - return binary_sysctl(name, nlen, oldval, oldlen, newval, newlen); -} - -SYSCALL_DEFINE1(sysctl, struct __sysctl_args __user *, args) -{ - struct __sysctl_args tmp; - size_t oldlen = 0; - ssize_t result; - - if (copy_from_user(&tmp, args, sizeof(tmp))) - return -EFAULT; - - if (tmp.oldval && !tmp.oldlenp) - return -EFAULT; - - if (tmp.oldlenp && get_user(oldlen, tmp.oldlenp)) - return -EFAULT; - - result = do_sysctl(tmp.name, tmp.nlen, tmp.oldval, oldlen, - tmp.newval, tmp.newlen); - - if (result >= 0) { - oldlen = result; - result = 0; - } - - if (tmp.oldlenp && put_user(oldlen, tmp.oldlenp)) - return -EFAULT; - - return result; -} - - -#ifdef CONFIG_COMPAT - -struct compat_sysctl_args { - compat_uptr_t name; - int nlen; - compat_uptr_t oldval; - compat_uptr_t oldlenp; - compat_uptr_t newval; - compat_size_t newlen; - compat_ulong_t __unused[4]; -}; - -COMPAT_SYSCALL_DEFINE1(sysctl, struct compat_sysctl_args __user *, args) -{ - struct compat_sysctl_args tmp; - compat_size_t __user *compat_oldlenp; - size_t oldlen = 0; - ssize_t result; - - if (copy_from_user(&tmp, args, sizeof(tmp))) - return -EFAULT; - - if (tmp.oldval && !tmp.oldlenp) - return -EFAULT; - - compat_oldlenp = compat_ptr(tmp.oldlenp); - if (compat_oldlenp && get_user(oldlen, compat_oldlenp)) - return -EFAULT; - - result = do_sysctl(compat_ptr(tmp.name), tmp.nlen, - compat_ptr(tmp.oldval), oldlen, - compat_ptr(tmp.newval), tmp.newlen); - - if (result >= 0) { - oldlen = result; - result = 0; - } - - if (compat_oldlenp && put_user(oldlen, compat_oldlenp)) - return -EFAULT; - - return result; -} - -#endif /* CONFIG_COMPAT */ diff --git a/tools/perf/arch/powerpc/entry/syscalls/syscall.tbl b/tools/perf/arch/powerpc/entry/syscalls/syscall.tbl index 35b61bfc1b1a..6d29d9a6bc60 100644 --- a/tools/perf/arch/powerpc/entry/syscalls/syscall.tbl +++ b/tools/perf/arch/powerpc/entry/syscalls/syscall.tbl @@ -193,7 +193,7 @@ 146 common writev sys_writev compat_sys_writev 147 common getsid sys_getsid 148 common fdatasync sys_fdatasync -149 nospu _sysctl sys_sysctl compat_sys_sysctl +149 nospu _sysctl sys_ni_syscall 150 common mlock sys_mlock 151 common munlock sys_munlock 152 common mlockall sys_mlockall diff --git a/tools/perf/arch/s390/entry/syscalls/syscall.tbl b/tools/perf/arch/s390/entry/syscalls/syscall.tbl index b38d48464368..0193f9b98753 100644 --- a/tools/perf/arch/s390/entry/syscalls/syscall.tbl +++ b/tools/perf/arch/s390/entry/syscalls/syscall.tbl @@ -138,7 +138,7 @@ 146 common writev sys_writev compat_sys_writev 147 common getsid sys_getsid sys_getsid 148 common fdatasync sys_fdatasync sys_fdatasync -149 common _sysctl sys_sysctl compat_sys_sysctl +149 common _sysctl sys_ni_syscall 150 common mlock sys_mlock compat_sys_mlock 151 common munlock sys_munlock compat_sys_munlock 152 common mlockall sys_mlockall sys_mlockall diff --git a/tools/perf/arch/x86/entry/syscalls/syscall_64.tbl b/tools/perf/arch/x86/entry/syscalls/syscall_64.tbl index 37b844f839bc..4e5006256193 100644 --- a/tools/perf/arch/x86/entry/syscalls/syscall_64.tbl +++ b/tools/perf/arch/x86/entry/syscalls/syscall_64.tbl @@ -164,7 +164,7 @@ 153 common vhangup sys_vhangup 154 common modify_ldt sys_modify_ldt 155 common pivot_root sys_pivot_root -156 64 _sysctl sys_sysctl +156 64 _sysctl sys_ni_syscall 157 common prctl sys_prctl 158 common arch_prctl sys_arch_prctl 159 common adjtimex sys_adjtimex