mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 15:20:58 +07:00
955a857e06
This patch creates a new idmapper system that uses the request-key function to place a call into userspace to map user and group ids to names. The old idmapper was single threaded, which prevented more than one request from running at a single time. This means that a user would have to wait for an upcall to finish before accessing a cached result. The upcall result is stored on a keyring of type id_resolver. See the file Documentation/filesystems/nfs/idmapper.txt for instructions. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> [Trond: fix up the return value of nfs_idmap_lookup_name and clean up code] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
93 lines
1.9 KiB
C
93 lines
1.9 KiB
C
/*
|
|
* linux/fs/nfs/sysctl.c
|
|
*
|
|
* Sysctl interface to NFS parameters
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/linkage.h>
|
|
#include <linux/ctype.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/sysctl.h>
|
|
#include <linux/module.h>
|
|
#include <linux/nfs4.h>
|
|
#include <linux/nfs_idmap.h>
|
|
#include <linux/nfs_fs.h>
|
|
|
|
#include "callback.h"
|
|
|
|
#ifdef CONFIG_NFS_V4
|
|
static const int nfs_set_port_min = 0;
|
|
static const int nfs_set_port_max = 65535;
|
|
#endif
|
|
static struct ctl_table_header *nfs_callback_sysctl_table;
|
|
|
|
static ctl_table nfs_cb_sysctls[] = {
|
|
#ifdef CONFIG_NFS_V4
|
|
{
|
|
.procname = "nfs_callback_tcpport",
|
|
.data = &nfs_callback_set_tcpport,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = (int *)&nfs_set_port_min,
|
|
.extra2 = (int *)&nfs_set_port_max,
|
|
},
|
|
#ifndef CONFIG_NFS_USE_NEW_IDMAPPER
|
|
{
|
|
.procname = "idmap_cache_timeout",
|
|
.data = &nfs_idmap_cache_timeout,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_jiffies,
|
|
},
|
|
#endif /* CONFIG_NFS_USE_NEW_IDMAPPER */
|
|
#endif
|
|
{
|
|
.procname = "nfs_mountpoint_timeout",
|
|
.data = &nfs_mountpoint_expiry_timeout,
|
|
.maxlen = sizeof(nfs_mountpoint_expiry_timeout),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_jiffies,
|
|
},
|
|
{
|
|
.procname = "nfs_congestion_kb",
|
|
.data = &nfs_congestion_kb,
|
|
.maxlen = sizeof(nfs_congestion_kb),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
{ }
|
|
};
|
|
|
|
static ctl_table nfs_cb_sysctl_dir[] = {
|
|
{
|
|
.procname = "nfs",
|
|
.mode = 0555,
|
|
.child = nfs_cb_sysctls,
|
|
},
|
|
{ }
|
|
};
|
|
|
|
static ctl_table nfs_cb_sysctl_root[] = {
|
|
{
|
|
.procname = "fs",
|
|
.mode = 0555,
|
|
.child = nfs_cb_sysctl_dir,
|
|
},
|
|
{ }
|
|
};
|
|
|
|
int nfs_register_sysctl(void)
|
|
{
|
|
nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root);
|
|
if (nfs_callback_sysctl_table == NULL)
|
|
return -ENOMEM;
|
|
return 0;
|
|
}
|
|
|
|
void nfs_unregister_sysctl(void)
|
|
{
|
|
unregister_sysctl_table(nfs_callback_sysctl_table);
|
|
nfs_callback_sysctl_table = NULL;
|
|
}
|