// SPDX-License-Identifier: GPL-2.0/* * linux/fs/fuse/fuse_sysctl.c * * Sysctl interface to fuse parameters */#include <linux/sysctl.h> #include "sysctl.h"#include "fuse_i.h" static struct ctl_table_header *fuse_table_header; /* Bound by fuse_init_out max_pages, which is a u16 */static unsigned int sysctl_fuse_max_pages_limit = 65535; /* * fuse_init_out request timeouts are u16. * This goes up to ~18 hours, which is plenty for a timeout. */static unsigned int sysctl_fuse_req_timeout_limit = 65535; static const struct ctl_table fuse_sysctl_table[] = {	{		.procname	= "max_pages_limit",		.data		= &fuse_max_pages_limit,		.maxlen		= sizeof(fuse_max_pages_limit),		.mode		= 0644,		.proc_handler	= proc_douintvec_minmax,		.extra1		= SYSCTL_ONE,		.extra2		= &sysctl_fuse_max_pages_limit,	},	{		.procname	= "default_request_timeout",		.data		= &fuse_default_req_timeout,		.maxlen		= sizeof(fuse_default_req_timeout),		.mode		= 0644,		.proc_handler	= proc_douintvec_minmax,		.extra1		= SYSCTL_ZERO,		.extra2		= &sysctl_fuse_req_timeout_limit,	},	{		.procname	= "max_request_timeout",		.data		= &fuse_max_req_timeout,		.maxlen		= sizeof(fuse_max_req_timeout),		.mode		= 0644,		.proc_handler	= proc_douintvec_minmax,		.extra1		= SYSCTL_ZERO,		.extra2		= &sysctl_fuse_req_timeout_limit,	},}; int fuse_sysctl_register(void){	fuse_table_header = register_sysctl("fs/fuse", fuse_sysctl_table);	if (!fuse_table_header)		return -ENOMEM;	return 0;} void fuse_sysctl_unregister(void){	unregister_sysctl_table(fuse_table_header);	fuse_table_header = NULL;}