// SPDX-License-Identifier: GPL-2.0
/*
* linux / fs / fuse / fuse_sysctl . c
*
* Sysctl interface to fuse parameters
*/
#include <linux/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;
}
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