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authorEric W. Biederman <ebiederm@xmission.com>2019-10-01 13:01:19 -0500
committerEric W. Biederman <ebiederm@xmission.com>2019-11-26 13:03:56 -0600
commit61a47c1ad3a4dc6882f01ebdc88138ac62d0df03 (patch)
treed4797e7d2eff82aea6ab9654b7302b6217882d43 /init
parent54ecb8f7028c5eb3d740bb82b0f1d90f2df63c5c (diff)
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sysctl: Remove the sysctl system call
This system call has been deprecated almost since it was introduced, and in a survey of the linux distributions I can no longer find any of them that enable CONFIG_SYSCTL_SYSCALL. The only indication that I can find that anyone might care is that a few of the defconfigs in the kernel enable CONFIG_SYSCTL_SYSCALL. However this appears in only 31 of 414 defconfigs in the kernel, so I suspect this symbols presence is simply because it is harmless to include rather than because it is necessary. As there appear to be no users of the sysctl system call, remove the code. As this removes one of the few uses of the internal kernel mount of proc I hope this allows for even more simplifications of the proc filesystem. Cc: Alex Smith <alex.smith@imgtec.com> Cc: Anders Berg <anders.berg@lsi.com> Cc: Apelete Seketeli <apelete@seketeli.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Chee Nouk Phoon <cnphoon@altera.com> Cc: Chris Zankel <chris@zankel.net> Cc: Christian Ruppert <christian.ruppert@abilis.com> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Harvey Hunt <harvey.hunt@imgtec.com> Cc: Helge Deller <deller@gmx.de> Cc: Hongliang Tao <taohl@lemote.com> Cc: Hua Yan <yanh@lemote.com> Cc: Huacai Chen <chenhc@lemote.com> Cc: John Crispin <blogic@openwrt.org> Cc: Jonas Jensen <jonas.jensen@gmail.com> Cc: Josh Boyer <jwboyer@gmail.com> Cc: Jun Nie <jun.nie@linaro.org> Cc: Kevin Hilman <khilman@linaro.org> Cc: Kevin Wells <kevin.wells@nxp.com> Cc: Kumar Gala <galak@codeaurora.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Ley Foon Tan <lftan@altera.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Noam Camus <noamc@ezchip.com> Cc: Olof Johansson <olof@lixom.net> Cc: Paul Burton <paul.burton@mips.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Phil Edworthy <phil.edworthy@renesas.com> Cc: Pierrick Hascoet <pierrick.hascoet@abilis.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Roland Stigge <stigge@antcom.de> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: Scott Telford <stelford@cadence.com> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: Tanmay Inamdar <tinamdar@apm.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Andi Kleen <ak@linux.intel.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'init')
-rw-r--r--init/Kconfig17
1 files changed, 0 insertions, 17 deletions
diff --git a/init/Kconfig b/init/Kconfig
index b4daad2bac23..a408116c7719 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1372,23 +1372,6 @@ config SYSFS_SYSCALL
If unsure say Y here.
-config SYSCTL_SYSCALL
- bool "Sysctl syscall support" if EXPERT
- depends on PROC_SYSCTL
- default n
- select SYSCTL
- ---help---
- sys_sysctl uses binary paths that have been found challenging
- to properly maintain and use. The interface in /proc/sys
- using paths with ascii names is now the primary path to this
- information.
-
- Almost nothing using the binary sysctl interface so if you are
- trying to save some space it is probably safe to disable this,
- making your kernel marginally smaller.
-
- If unsure say N here.
-
config FHANDLE
bool "open by fhandle syscalls" if EXPERT
select EXPORTFS