1751f872cc
Add the const qualifier to all the ctl_tables in the tree except for
watchdog_hardlockup_sysctl, memory_allocation_profiling_sysctls,
loadpin_sysctl_table and the ones calling register_net_sysctl (./net,
drivers/inifiniband dirs). These are special cases as they use a
registration function with a non-const qualified ctl_table argument or
modify the arrays before passing them on to the registration function.
Constifying ctl_table structs will prevent the modification of
proc_handler function pointers as the arrays would reside in .rodata.
This is made possible after commit 78eb4ea25c ("sysctl: treewide:
constify the ctl_table argument of proc_handlers") constified all the
proc_handlers.
Created this by running an spatch followed by a sed command:
Spatch:
virtual patch
@
depends on !(file in "net")
disable optional_qualifier
@
identifier table_name != {
watchdog_hardlockup_sysctl,
iwcm_ctl_table,
ucma_ctl_table,
memory_allocation_profiling_sysctls,
loadpin_sysctl_table
};
@@
+ const
struct ctl_table table_name [] = { ... };
sed:
sed --in-place \
-e "s/struct ctl_table .table = &uts_kern/const struct ctl_table *table = \&uts_kern/" \
kernel/utsname_sysctl.c
Reviewed-by: Song Liu <song@kernel.org>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> # for kernel/trace/
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> # SCSI
Reviewed-by: Darrick J. Wong <djwong@kernel.org> # xfs
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Corey Minyard <cminyard@mvista.com>
Acked-by: Wei Liu <wei.liu@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Bill O'Donnell <bodonnel@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Acked-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Acked-by: Anna Schumaker <anna.schumaker@oracle.com>
Signed-off-by: Joel Granados <joel.granados@kernel.org>
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* linux/arch/arm/kernel/isa.c
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*
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* Copyright (C) 1999 Phil Blundell
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*
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* ISA shared memory and I/O port support, and is required to support
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* iopl, inb, outb and friends in userspace via glibc emulation.
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*/
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#include <linux/stddef.h>
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#include <linux/types.h>
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#include <linux/fs.h>
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#include <linux/sysctl.h>
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#include <linux/init.h>
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#include <linux/io.h>
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static unsigned int isa_membase, isa_portbase, isa_portshift;
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static const struct ctl_table ctl_isa_vars[] = {
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{
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.procname = "membase",
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.data = &isa_membase,
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.maxlen = sizeof(isa_membase),
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.mode = 0444,
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.proc_handler = proc_dointvec,
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}, {
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.procname = "portbase",
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.data = &isa_portbase,
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.maxlen = sizeof(isa_portbase),
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.mode = 0444,
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.proc_handler = proc_dointvec,
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}, {
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.procname = "portshift",
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.data = &isa_portshift,
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.maxlen = sizeof(isa_portshift),
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.mode = 0444,
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.proc_handler = proc_dointvec,
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},
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};
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static struct ctl_table_header *isa_sysctl_header;
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void __init
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register_isa_ports(unsigned int membase, unsigned int portbase, unsigned int portshift)
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{
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isa_membase = membase;
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isa_portbase = portbase;
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isa_portshift = portshift;
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isa_sysctl_header = register_sysctl("bus/isa", ctl_isa_vars);
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}
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