cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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fallback_table.c (1853B)

      1// SPDX-License-Identifier: GPL-2.0
      2
      3#include <linux/types.h>
      4#include <linux/kconfig.h>
      5#include <linux/list.h>
      6#include <linux/slab.h>
      7#include <linux/export.h>
      8#include <linux/security.h>
      9#include <linux/highmem.h>
     10#include <linux/umh.h>
     11#include <linux/sysctl.h>
     12
     13#include "fallback.h"
     14#include "firmware.h"
     15
     16/*
     17 * firmware fallback configuration table
     18 */
     19
     20struct firmware_fallback_config fw_fallback_config = {
     21	.force_sysfs_fallback = IS_ENABLED(CONFIG_FW_LOADER_USER_HELPER_FALLBACK),
     22	.loading_timeout = 60,
     23	.old_timeout = 60,
     24};
     25EXPORT_SYMBOL_NS_GPL(fw_fallback_config, FIRMWARE_LOADER_PRIVATE);
     26
     27#ifdef CONFIG_SYSCTL
     28static struct ctl_table firmware_config_table[] = {
     29	{
     30		.procname	= "force_sysfs_fallback",
     31		.data		= &fw_fallback_config.force_sysfs_fallback,
     32		.maxlen         = sizeof(unsigned int),
     33		.mode           = 0644,
     34		.proc_handler   = proc_douintvec_minmax,
     35		.extra1		= SYSCTL_ZERO,
     36		.extra2		= SYSCTL_ONE,
     37	},
     38	{
     39		.procname	= "ignore_sysfs_fallback",
     40		.data		= &fw_fallback_config.ignore_sysfs_fallback,
     41		.maxlen         = sizeof(unsigned int),
     42		.mode           = 0644,
     43		.proc_handler   = proc_douintvec_minmax,
     44		.extra1		= SYSCTL_ZERO,
     45		.extra2		= SYSCTL_ONE,
     46	},
     47	{ }
     48};
     49
     50static struct ctl_table_header *firmware_config_sysct_table_header;
     51int register_firmware_config_sysctl(void)
     52{
     53	firmware_config_sysct_table_header =
     54		register_sysctl("kernel/firmware_config",
     55				firmware_config_table);
     56	if (!firmware_config_sysct_table_header)
     57		return -ENOMEM;
     58	return 0;
     59}
     60EXPORT_SYMBOL_NS_GPL(register_firmware_config_sysctl, FIRMWARE_LOADER_PRIVATE);
     61
     62void unregister_firmware_config_sysctl(void)
     63{
     64	unregister_sysctl_table(firmware_config_sysct_table_header);
     65	firmware_config_sysct_table_header = NULL;
     66}
     67EXPORT_SYMBOL_NS_GPL(unregister_firmware_config_sysctl, FIRMWARE_LOADER_PRIVATE);
     68
     69#endif /* CONFIG_SYSCTL */