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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
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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 78eb4ea25cd5 ("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>
100 lines
2.1 KiB
C
100 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* FIPS 200 support.
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*
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* Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.com>
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*/
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#include <linux/export.h>
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#include <linux/fips.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sysctl.h>
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#include <linux/notifier.h>
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#include <linux/string_choices.h>
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#include <generated/utsrelease.h>
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int fips_enabled;
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EXPORT_SYMBOL_GPL(fips_enabled);
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ATOMIC_NOTIFIER_HEAD(fips_fail_notif_chain);
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EXPORT_SYMBOL_GPL(fips_fail_notif_chain);
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/* Process kernel command-line parameter at boot time. fips=0 or fips=1 */
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static int fips_enable(char *str)
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{
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fips_enabled = !!simple_strtol(str, NULL, 0);
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pr_info("fips mode: %s\n", str_enabled_disabled(fips_enabled));
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return 1;
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}
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__setup("fips=", fips_enable);
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#define FIPS_MODULE_NAME CONFIG_CRYPTO_FIPS_NAME
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#ifdef CONFIG_CRYPTO_FIPS_CUSTOM_VERSION
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#define FIPS_MODULE_VERSION CONFIG_CRYPTO_FIPS_VERSION
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#else
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#define FIPS_MODULE_VERSION UTS_RELEASE
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#endif
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static char fips_name[] = FIPS_MODULE_NAME;
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static char fips_version[] = FIPS_MODULE_VERSION;
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static const struct ctl_table crypto_sysctl_table[] = {
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{
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.procname = "fips_enabled",
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.data = &fips_enabled,
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.maxlen = sizeof(int),
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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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.procname = "fips_name",
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.data = &fips_name,
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.maxlen = 64,
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.mode = 0444,
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.proc_handler = proc_dostring
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},
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{
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.procname = "fips_version",
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.data = &fips_version,
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.maxlen = 64,
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.mode = 0444,
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.proc_handler = proc_dostring
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},
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};
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static struct ctl_table_header *crypto_sysctls;
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static void crypto_proc_fips_init(void)
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{
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crypto_sysctls = register_sysctl("crypto", crypto_sysctl_table);
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}
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static void crypto_proc_fips_exit(void)
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{
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unregister_sysctl_table(crypto_sysctls);
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}
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void fips_fail_notify(void)
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{
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if (fips_enabled)
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atomic_notifier_call_chain(&fips_fail_notif_chain, 0, NULL);
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}
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EXPORT_SYMBOL_GPL(fips_fail_notify);
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static int __init fips_init(void)
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{
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crypto_proc_fips_init();
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return 0;
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}
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static void __exit fips_exit(void)
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{
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crypto_proc_fips_exit();
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}
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subsys_initcall(fips_init);
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module_exit(fips_exit);
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