1 // SPDX-License-Identifier: GPL-2.0 <<
2 /* 1 /*
3 * linux/fs/nfs/sysctl.c 2 * linux/fs/nfs/sysctl.c
4 * 3 *
5 * Sysctl interface to NFS parameters 4 * Sysctl interface to NFS parameters
6 */ 5 */
7 #include <linux/types.h> 6 #include <linux/types.h>
8 #include <linux/linkage.h> 7 #include <linux/linkage.h>
9 #include <linux/ctype.h> 8 #include <linux/ctype.h>
10 #include <linux/fs.h> 9 #include <linux/fs.h>
11 #include <linux/sysctl.h> 10 #include <linux/sysctl.h>
12 #include <linux/module.h> 11 #include <linux/module.h>
>> 12 #include <linux/nfs4.h>
>> 13 #include <linux/nfs_idmap.h>
13 #include <linux/nfs_fs.h> 14 #include <linux/nfs_fs.h>
14 15
>> 16 #include "callback.h"
>> 17
>> 18 static const int nfs_set_port_min = 0;
>> 19 static const int nfs_set_port_max = 65535;
15 static struct ctl_table_header *nfs_callback_s 20 static struct ctl_table_header *nfs_callback_sysctl_table;
16 21
17 static struct ctl_table nfs_cb_sysctls[] = { !! 22 static ctl_table nfs_cb_sysctls[] = {
>> 23 #ifdef CONFIG_NFS_V4
>> 24 {
>> 25 .ctl_name = CTL_UNNUMBERED,
>> 26 .procname = "nfs_callback_tcpport",
>> 27 .data = &nfs_callback_set_tcpport,
>> 28 .maxlen = sizeof(int),
>> 29 .mode = 0644,
>> 30 .proc_handler = &proc_dointvec_minmax,
>> 31 .extra1 = (int *)&nfs_set_port_min,
>> 32 .extra2 = (int *)&nfs_set_port_max,
>> 33 },
18 { 34 {
>> 35 .ctl_name = CTL_UNNUMBERED,
>> 36 .procname = "idmap_cache_timeout",
>> 37 .data = &nfs_idmap_cache_timeout,
>> 38 .maxlen = sizeof(int),
>> 39 .mode = 0644,
>> 40 .proc_handler = &proc_dointvec_jiffies,
>> 41 .strategy = &sysctl_jiffies,
>> 42 },
>> 43 #endif
>> 44 {
>> 45 .ctl_name = CTL_UNNUMBERED,
19 .procname = "nfs_mountpo 46 .procname = "nfs_mountpoint_timeout",
20 .data = &nfs_mountpo 47 .data = &nfs_mountpoint_expiry_timeout,
21 .maxlen = sizeof(nfs_m 48 .maxlen = sizeof(nfs_mountpoint_expiry_timeout),
22 .mode = 0644, 49 .mode = 0644,
23 .proc_handler = proc_dointve !! 50 .proc_handler = &proc_dointvec_jiffies,
>> 51 .strategy = &sysctl_jiffies,
24 }, 52 },
25 { 53 {
>> 54 .ctl_name = CTL_UNNUMBERED,
26 .procname = "nfs_congest 55 .procname = "nfs_congestion_kb",
27 .data = &nfs_congest 56 .data = &nfs_congestion_kb,
28 .maxlen = sizeof(nfs_c 57 .maxlen = sizeof(nfs_congestion_kb),
29 .mode = 0644, 58 .mode = 0644,
30 .proc_handler = proc_dointve !! 59 .proc_handler = &proc_dointvec,
>> 60 },
>> 61 { .ctl_name = 0 }
>> 62 };
>> 63
>> 64 static ctl_table nfs_cb_sysctl_dir[] = {
>> 65 {
>> 66 .ctl_name = CTL_UNNUMBERED,
>> 67 .procname = "nfs",
>> 68 .mode = 0555,
>> 69 .child = nfs_cb_sysctls,
>> 70 },
>> 71 { .ctl_name = 0 }
>> 72 };
>> 73
>> 74 static ctl_table nfs_cb_sysctl_root[] = {
>> 75 {
>> 76 .ctl_name = CTL_FS,
>> 77 .procname = "fs",
>> 78 .mode = 0555,
>> 79 .child = nfs_cb_sysctl_dir,
31 }, 80 },
>> 81 { .ctl_name = 0 }
32 }; 82 };
33 83
34 int nfs_register_sysctl(void) 84 int nfs_register_sysctl(void)
35 { 85 {
36 nfs_callback_sysctl_table = register_s !! 86 nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root);
37 if (nfs_callback_sysctl_table == NULL) 87 if (nfs_callback_sysctl_table == NULL)
38 return -ENOMEM; 88 return -ENOMEM;
39 return 0; 89 return 0;
40 } 90 }
41 91
42 void nfs_unregister_sysctl(void) 92 void nfs_unregister_sysctl(void)
43 { 93 {
44 unregister_sysctl_table(nfs_callback_s 94 unregister_sysctl_table(nfs_callback_sysctl_table);
45 nfs_callback_sysctl_table = NULL; 95 nfs_callback_sysctl_table = NULL;
46 } 96 }
47 97
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