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all arch: remove system call sys_sysctl 

Since commit 61a47c1ad3 ("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.

[nixiaoming@huawei.com: s390: fix build error for sys_call_table_emu]
 Link: http://lkml.kernel.org/r/20200618141426.16884-1-nixiaoming@huawei.com

Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Will Deacon <will@kernel.org>		[arm/arm64]
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Aleksa Sarai <cyphar@cyphar.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Bin Meng <bin.meng@windriver.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: chenzefeng <chenzefeng2@huawei.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Christian Brauner <christian@brauner.io>
Cc: Chris Zankel <chris@zankel.net>
Cc: David Howells <dhowells@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Diego Elio Pettenò <flameeyes@flameeyes.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Iurii Zaikin <yzaikin@google.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kars de Jong <jongk@linux-m68k.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Marco Elver <elver@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Nick Piggin <npiggin@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Paul Burton <paulburton@kernel.org>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Sami Tolvanen <samitolvanen@google.com>
Cc: Sargun Dhillon <sargun@sargun.me>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Sven Schnelle <svens@stackframe.org>
Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Zhou Yanjie <zhouyanjie@wanyeetech.com>
Link: http://lkml.kernel.org/r/20200616030734.87257-1-nixiaoming@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Xiaoming Ni 2020-08-14 17:31:07 -07:00 committed by Linus Torvalds
parent c734124c5c
commit 88db0aa242
52 changed files with 24 additions and 227 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/alpha/kernel/syscalls/syscall.tbl
View File

@ -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

1
arch/arm/configs/am200epdkit_defconfig
View File

@ -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

2
arch/arm/tools/syscall.tbl
View File

@ -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

4
arch/arm64/include/asm/unistd32.h
View File

@ -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

2
arch/ia64/kernel/syscalls/syscall.tbl
View File

@ -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

2
arch/m68k/kernel/syscalls/syscall.tbl
View File

@ -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

2
arch/microblaze/kernel/syscalls/syscall.tbl
View File

@ -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

1
arch/mips/configs/cu1000-neo_defconfig
View File

@ -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

2
arch/mips/kernel/syscalls/syscall_n32.tbl
View File

@ -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

2
arch/mips/kernel/syscalls/syscall_n64.tbl
View File

@ -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

2
arch/mips/kernel/syscalls/syscall_o32.tbl
View File

@ -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

2
arch/parisc/kernel/syscalls/syscall.tbl
View File

@ -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

2
arch/powerpc/kernel/syscalls/syscall.tbl
View File

@ -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

2
arch/s390/kernel/syscalls/syscall.tbl
View File

@ -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 - -
150 common mlock sys_mlock sys_mlock
151 common munlock sys_munlock sys_munlock
152 common mlockall sys_mlockall sys_mlockall

1
arch/sh/configs/dreamcast_defconfig
View File

@ -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

1
arch/sh/configs/espt_defconfig
View File

@ -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

1
arch/sh/configs/hp6xx_defconfig
View File

@ -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

1
arch/sh/configs/landisk_defconfig
View File

@ -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

1
arch/sh/configs/lboxre2_defconfig
View File

@ -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

1
arch/sh/configs/microdev_defconfig
View File

@ -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

1
arch/sh/configs/migor_defconfig
View File

@ -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

1
arch/sh/configs/r7780mp_defconfig
View File

@ -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

1
arch/sh/configs/r7785rp_defconfig
View File

@ -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

1
arch/sh/configs/rts7751r2d1_defconfig
View File

@ -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

1
arch/sh/configs/rts7751r2dplus_defconfig
View File

@ -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

1
arch/sh/configs/se7206_defconfig
View File

@ -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

1
arch/sh/configs/se7343_defconfig
View File

@ -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

1
arch/sh/configs/se7619_defconfig
View File

@ -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

1
arch/sh/configs/se7705_defconfig
View File

@ -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

1
arch/sh/configs/se7750_defconfig
View File

@ -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

1
arch/sh/configs/se7751_defconfig
View File

@ -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

1
arch/sh/configs/secureedge5410_defconfig
View File

@ -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

1
arch/sh/configs/sh03_defconfig
View File

@ -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

1
arch/sh/configs/sh7710voipgw_defconfig
View File

@ -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

1
arch/sh/configs/sh7757lcr_defconfig
View File

@ -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

1
arch/sh/configs/sh7763rdp_defconfig
View File

@ -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

1
arch/sh/configs/shmin_defconfig
View File

@ -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

1
arch/sh/configs/titan_defconfig
View File

@ -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

2
arch/sh/kernel/syscalls/syscall.tbl
View File

@ -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

2
arch/sparc/kernel/syscalls/syscall.tbl
View File

@ -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

2
arch/x86/entry/syscalls/syscall_32.tbl
View File

@ -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

2
arch/x86/entry/syscalls/syscall_64.tbl
View File

@ -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

2
arch/xtensa/kernel/syscalls/syscall.tbl
View File

@ -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

1
include/linux/compat.h
View File

@ -851,7 +851,6 @@ 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,

2
include/linux/syscalls.h
View File

@ -47,7 +47,6 @@ struct stat64;
struct statfs;
struct statfs64;
struct statx;
struct __sysctl_args;
struct sysinfo;
struct timespec;
struct __kernel_old_timeval;
@ -1117,7 +1116,6 @@ 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);

6
include/linux/sysctl.h
View File

@ -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.
*

2
kernel/Makefile
View File

@ -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 \

1
kernel/sys_ni.c
View File

@ -364,7 +364,6 @@ COND_SYSCALL(socketcall);
COND_SYSCALL_COMPAT(socketcall);
/* compat syscalls for arm64, x86, ... */
COND_SYSCALL_COMPAT(sysctl);
COND_SYSCALL_COMPAT(fanotify_mark);
/* x86 */

171
kernel/sysctl_binary.c
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@ -1,171 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/stat.h>
#include <linux/sysctl.h>
#include "../fs/xfs/xfs_sysctl.h"
#include <linux/sunrpc/debug.h>
#include <linux/string.h>
#include <linux/syscalls.h>
#include <linux/namei.h>
#include <linux/mount.h>
#include <linux/fs.h>
#include <linux/nsproxy.h>
#include <linux/pid_namespace.h>
#include <linux/file.h>
#include <linux/ctype.h>
#include <linux/netdevice.h>
#include <linux/kernel.h>
#include <linux/uuid.h>
#include <linux/slab.h>
#include <linux/compat.h>
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<<WARN_ONCE_HASH_BITS)
static DECLARE_BITMAP(warn_once_bitmap, WARN_ONCE_HASH_SIZE);
#define FNV32_OFFSET 2166136261U
#define FNV32_PRIME 0x01000193
/*
* Print each legacy sysctl (approximately) only once.
* To avoid making the tables non-const use a external
* hash-table instead.
* Worst case hash collision: 6, but very rarely.
* NOTE! We don't use the SMP-safe bit tests. We simply
* don't care enough.
*/
static void warn_on_bintable(const int *name, int nlen)
{
int i;
u32 hash = FNV32_OFFSET;
for (i = 0; i < nlen; i++)
hash = (hash ^ name[i]) * FNV32_PRIME;
hash %= WARN_ONCE_HASH_SIZE;
if (__test_and_set_bit(hash, warn_once_bitmap))
return;
deprecated_sysctl_warning(name, nlen);
}
static ssize_t do_sysctl(int __user *args_name, int nlen,
void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
{
int name[CTL_MAXNAME];
int i;
/* Check args->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 */

2
tools/perf/arch/powerpc/entry/syscalls/syscall.tbl
View File

@ -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

2
tools/perf/arch/s390/entry/syscalls/syscall.tbl
View File

@ -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 - -
150 common mlock sys_mlock compat_sys_mlock
151 common munlock sys_munlock compat_sys_munlock
152 common mlockall sys_mlockall sys_mlockall

2
tools/perf/arch/x86/entry/syscalls/syscall_64.tbl
View File

@ -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