/* * 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" static const int nfs_set_port_min = 0; static const int nfs_set_port_max = 65535; static struct ctl_table_header *nfs_callback_sysctl_table; static ctl_table nfs_cb_sysctls[] = { #ifdef CONFIG_NFS_V4 { .ctl_name = CTL_UNNUMBERED, .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, }, { .ctl_name = CTL_UNNUMBERED, .procname = "idmap_cache_timeout", .data = &nfs_idmap_cache_timeout, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec_jiffies, .strategy = &sysctl_jiffies, }, #endif { .ctl_name = CTL_UNNUMBERED, .procname = "nfs_mountpoint_timeout", .data = &nfs_mountpoint_expiry_timeout, .maxlen = sizeof(nfs_mountpoint_expiry_timeout), .mode = 0644, .proc_handler = &proc_dointvec_jiffies, .strategy = &sysctl_jiffies, }, { .ctl_name = CTL_UNNUMBERED, .procname = "nfs_congestion_kb", .data = &nfs_congestion_kb, .maxlen = sizeof(nfs_congestion_kb), .mode = 0644, .proc_handler = &proc_dointvec, }, { .ctl_name = 0 } }; static ctl_table nfs_cb_sysctl_dir[] = { { .ctl_name = CTL_UNNUMBERED, .procname = "nfs", .mode = 0555, .child = nfs_cb_sysctls, }, { .ctl_name = 0 } }; static ctl_table nfs_cb_sysctl_root[] = { { .ctl_name = CTL_FS, .procname = "fs", .mode = 0555, .child = nfs_cb_sysctl_dir, }, { .ctl_name = 0 } }; 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; }