^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* client.c: NFS client sharing and management code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Written by David Howells (dhowells@redhat.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/sunrpc/addr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/sunrpc/clnt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/sunrpc/stats.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/sunrpc/metrics.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/sunrpc/xprtsock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/sunrpc/xprtrdma.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/nfs_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/nfs_mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/nfs4_mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/lockd/bind.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/vfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/inet.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/in6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/idr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <net/ipv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <linux/nfs_xdr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <linux/sunrpc/bc_xprt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <linux/nsproxy.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <linux/pid_namespace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include "nfs4_fs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include "callback.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include "delegation.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include "iostat.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include "internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include "fscache.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include "pnfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include "nfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include "netns.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include "sysfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include "nfs42.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define NFSDBG_FACILITY NFSDBG_CLIENT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static DEFINE_SPINLOCK(nfs_version_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static DEFINE_MUTEX(nfs_version_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static LIST_HEAD(nfs_versions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * RPC cruft for NFS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static const struct rpc_version *nfs_version[5] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) [2] = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) [3] = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) [4] = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) const struct rpc_program nfs_program = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) .name = "nfs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) .number = NFS_PROGRAM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) .nrvers = ARRAY_SIZE(nfs_version),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) .version = nfs_version,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .stats = &nfs_rpcstat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .pipe_dir_name = NFS_PIPE_DIRNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct rpc_stat nfs_rpcstat = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) .program = &nfs_program
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static struct nfs_subversion *find_nfs_version(unsigned int version)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct nfs_subversion *nfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) spin_lock(&nfs_version_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) list_for_each_entry(nfs, &nfs_versions, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (nfs->rpc_ops->version == version) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) spin_unlock(&nfs_version_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) return nfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) spin_unlock(&nfs_version_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return ERR_PTR(-EPROTONOSUPPORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct nfs_subversion *get_nfs_version(unsigned int version)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct nfs_subversion *nfs = find_nfs_version(version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (IS_ERR(nfs)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) mutex_lock(&nfs_version_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) request_module("nfsv%d", version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) nfs = find_nfs_version(version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) mutex_unlock(&nfs_version_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (!IS_ERR(nfs) && !try_module_get(nfs->owner))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return ERR_PTR(-EAGAIN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return nfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) void put_nfs_version(struct nfs_subversion *nfs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) module_put(nfs->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) void register_nfs_version(struct nfs_subversion *nfs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) spin_lock(&nfs_version_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) list_add(&nfs->list, &nfs_versions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) nfs_version[nfs->rpc_ops->version] = nfs->rpc_vers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) spin_unlock(&nfs_version_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) EXPORT_SYMBOL_GPL(register_nfs_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) void unregister_nfs_version(struct nfs_subversion *nfs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) spin_lock(&nfs_version_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) nfs_version[nfs->rpc_ops->version] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) list_del(&nfs->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) spin_unlock(&nfs_version_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) EXPORT_SYMBOL_GPL(unregister_nfs_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * Allocate a shared client record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * Since these are allocated/deallocated very rarely, we don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * bother putting them in a slab cache...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) struct nfs_client *clp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) int err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if ((clp = kzalloc(sizeof(*clp), GFP_KERNEL)) == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) goto error_0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) clp->cl_minorversion = cl_init->minorversion;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) clp->cl_nfs_mod = cl_init->nfs_mod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if (!try_module_get(clp->cl_nfs_mod->owner))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) goto error_dealloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) clp->rpc_ops = clp->cl_nfs_mod->rpc_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) refcount_set(&clp->cl_count, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) clp->cl_cons_state = NFS_CS_INITING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) memcpy(&clp->cl_addr, cl_init->addr, cl_init->addrlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) clp->cl_addrlen = cl_init->addrlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) if (cl_init->hostname) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) clp->cl_hostname = kstrdup(cl_init->hostname, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (!clp->cl_hostname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) goto error_cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) INIT_LIST_HEAD(&clp->cl_superblocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) clp->cl_rpcclient = ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) clp->cl_flags = cl_init->init_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) clp->cl_proto = cl_init->proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) clp->cl_nconnect = cl_init->nconnect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) clp->cl_net = get_net(cl_init->net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) clp->cl_principal = "*";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) nfs_fscache_get_client_cookie(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return clp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) error_cleanup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) put_nfs_version(clp->cl_nfs_mod);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) error_dealloc:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) kfree(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) error_0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return ERR_PTR(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) EXPORT_SYMBOL_GPL(nfs_alloc_client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) #if IS_ENABLED(CONFIG_NFS_V4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) static void nfs_cleanup_cb_ident_idr(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) struct nfs_net *nn = net_generic(net, nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) idr_destroy(&nn->cb_ident_idr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) /* nfs_client_lock held */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) static void nfs_cb_idr_remove_locked(struct nfs_client *clp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (clp->cl_cb_ident)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) idr_remove(&nn->cb_ident_idr, clp->cl_cb_ident);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) static void pnfs_init_server(struct nfs_server *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) rpc_init_wait_queue(&server->roc_rpcwaitq, "pNFS ROC");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) static void nfs_cleanup_cb_ident_idr(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static void nfs_cb_idr_remove_locked(struct nfs_client *clp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) static void pnfs_init_server(struct nfs_server *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) #endif /* CONFIG_NFS_V4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * Destroy a shared client record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) void nfs_free_client(struct nfs_client *clp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) nfs_fscache_release_client_cookie(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) /* -EIO all pending I/O */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) if (!IS_ERR(clp->cl_rpcclient))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) rpc_shutdown_client(clp->cl_rpcclient);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) put_net(clp->cl_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) put_nfs_version(clp->cl_nfs_mod);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) kfree(clp->cl_hostname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) kfree(clp->cl_acceptor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) kfree(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) EXPORT_SYMBOL_GPL(nfs_free_client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) * Release a reference to a shared client record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) void nfs_put_client(struct nfs_client *clp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) struct nfs_net *nn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (!clp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) nn = net_generic(clp->cl_net, nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) if (refcount_dec_and_lock(&clp->cl_count, &nn->nfs_client_lock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) list_del(&clp->cl_share_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) nfs_cb_idr_remove_locked(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) spin_unlock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) WARN_ON_ONCE(!list_empty(&clp->cl_superblocks));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) clp->rpc_ops->free_client(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) EXPORT_SYMBOL_GPL(nfs_put_client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) * Find an nfs_client on the list that matches the initialisation data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) * that is supplied.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) struct nfs_client *clp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) const struct sockaddr *sap = data->addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) struct nfs_net *nn = net_generic(data->net, nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) again:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) const struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) /* Don't match clients that failed to initialise properly */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) if (clp->cl_cons_state < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) /* If a client is still initializing then we need to wait */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (clp->cl_cons_state > NFS_CS_READY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) refcount_inc(&clp->cl_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) spin_unlock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) error = nfs_wait_client_init_complete(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) nfs_put_client(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) spin_lock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) return ERR_PTR(error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) goto again;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) /* Different NFS versions cannot share the same nfs_client */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) if (clp->rpc_ops != data->nfs_mod->rpc_ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) if (clp->cl_proto != data->proto)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) /* Match nfsv4 minorversion */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (clp->cl_minorversion != data->minorversion)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) /* Match request for a dedicated DS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (test_bit(NFS_CS_DS, &data->init_flags) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) test_bit(NFS_CS_DS, &clp->cl_flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) /* Match the full socket address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if (!rpc_cmp_addr_port(sap, clap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) /* Match all xprt_switch full socket addresses */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) if (IS_ERR(clp->cl_rpcclient) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) !rpc_clnt_xprt_switch_has_addr(clp->cl_rpcclient,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) sap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) refcount_inc(&clp->cl_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return clp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) * Return true if @clp is done initializing, false if still working on it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) * Use nfs_client_init_status to check if it was successful.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) bool nfs_client_init_is_complete(const struct nfs_client *clp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) return clp->cl_cons_state <= NFS_CS_READY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) EXPORT_SYMBOL_GPL(nfs_client_init_is_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) * Return 0 if @clp was successfully initialized, -errno otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) * This must be called *after* nfs_client_init_is_complete() returns true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) * otherwise it will pop WARN_ON_ONCE and return -EINVAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) int nfs_client_init_status(const struct nfs_client *clp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) /* called without checking nfs_client_init_is_complete */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) if (clp->cl_cons_state > NFS_CS_READY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) WARN_ON_ONCE(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) return clp->cl_cons_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) EXPORT_SYMBOL_GPL(nfs_client_init_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) int nfs_wait_client_init_complete(const struct nfs_client *clp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) return wait_event_killable(nfs_client_active_wq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) nfs_client_init_is_complete(clp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) EXPORT_SYMBOL_GPL(nfs_wait_client_init_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) * Found an existing client. Make sure it's ready before returning.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) static struct nfs_client *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) nfs_found_client(const struct nfs_client_initdata *cl_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) struct nfs_client *clp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) error = nfs_wait_client_init_complete(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (error < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) nfs_put_client(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) return ERR_PTR(-ERESTARTSYS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (clp->cl_cons_state < NFS_CS_READY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) error = clp->cl_cons_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) nfs_put_client(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) return ERR_PTR(error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) smp_rmb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) return clp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * Look up a client by IP address and protocol version
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) * - creates a new record if one doesn't yet exist
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) struct nfs_client *nfs_get_client(const struct nfs_client_initdata *cl_init)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) struct nfs_client *clp, *new = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) struct nfs_net *nn = net_generic(cl_init->net, nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) const struct nfs_rpc_ops *rpc_ops = cl_init->nfs_mod->rpc_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) if (cl_init->hostname == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) WARN_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) /* see if the client already exists */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) spin_lock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) clp = nfs_match_client(cl_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) if (clp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) spin_unlock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) if (new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) new->rpc_ops->free_client(new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) if (IS_ERR(clp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) return clp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) return nfs_found_client(cl_init, clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) if (new) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) list_add_tail(&new->cl_share_link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) &nn->nfs_client_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) spin_unlock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) return rpc_ops->init_client(new, cl_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) spin_unlock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) new = rpc_ops->alloc_client(cl_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) } while (!IS_ERR(new));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) return new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) EXPORT_SYMBOL_GPL(nfs_get_client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) * Mark a server as ready or failed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) void nfs_mark_client_ready(struct nfs_client *clp, int state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) smp_wmb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) clp->cl_cons_state = state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) wake_up_all(&nfs_client_active_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) EXPORT_SYMBOL_GPL(nfs_mark_client_ready);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) * Initialise the timeout values for a connection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) int timeo, int retrans)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) to->to_initval = timeo * HZ / 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) to->to_retries = retrans;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) switch (proto) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) case XPRT_TRANSPORT_TCP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) case XPRT_TRANSPORT_RDMA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) if (retrans == NFS_UNSPEC_RETRANS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) to->to_retries = NFS_DEF_TCP_RETRANS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) if (timeo == NFS_UNSPEC_TIMEO || to->to_initval == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) to->to_initval = NFS_DEF_TCP_TIMEO * HZ / 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) if (to->to_initval > NFS_MAX_TCP_TIMEOUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) to->to_initval = NFS_MAX_TCP_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) to->to_increment = to->to_initval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) to->to_maxval = to->to_initval + (to->to_increment * to->to_retries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) if (to->to_maxval > NFS_MAX_TCP_TIMEOUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) to->to_maxval = NFS_MAX_TCP_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if (to->to_maxval < to->to_initval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) to->to_maxval = to->to_initval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) to->to_exponential = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) #ifndef CONFIG_NFS_DISABLE_UDP_SUPPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) case XPRT_TRANSPORT_UDP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) if (retrans == NFS_UNSPEC_RETRANS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) to->to_retries = NFS_DEF_UDP_RETRANS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) if (timeo == NFS_UNSPEC_TIMEO || to->to_initval == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) to->to_initval = NFS_DEF_UDP_TIMEO * HZ / 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) if (to->to_initval > NFS_MAX_UDP_TIMEOUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) to->to_initval = NFS_MAX_UDP_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) to->to_maxval = NFS_MAX_UDP_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) to->to_exponential = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) EXPORT_SYMBOL_GPL(nfs_init_timeout_values);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) * Create an RPC client handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) int nfs_create_rpc_client(struct nfs_client *clp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) const struct nfs_client_initdata *cl_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) rpc_authflavor_t flavor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) struct rpc_clnt *clnt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) struct rpc_create_args args = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) .net = clp->cl_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) .protocol = clp->cl_proto,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) .nconnect = clp->cl_nconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) .address = (struct sockaddr *)&clp->cl_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) .addrsize = clp->cl_addrlen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) .timeout = cl_init->timeparms,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) .servername = clp->cl_hostname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) .nodename = cl_init->nodename,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) .program = &nfs_program,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) .version = clp->rpc_ops->version,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) .authflavor = flavor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) .cred = cl_init->cred,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) if (test_bit(NFS_CS_DISCRTRY, &clp->cl_flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) args.flags |= RPC_CLNT_CREATE_DISCRTRY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) if (test_bit(NFS_CS_NO_RETRANS_TIMEOUT, &clp->cl_flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) args.flags |= RPC_CLNT_CREATE_NO_RETRANS_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) if (test_bit(NFS_CS_NORESVPORT, &clp->cl_flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) if (test_bit(NFS_CS_INFINITE_SLOTS, &clp->cl_flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) args.flags |= RPC_CLNT_CREATE_INFINITE_SLOTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) if (test_bit(NFS_CS_NOPING, &clp->cl_flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) args.flags |= RPC_CLNT_CREATE_NOPING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) if (test_bit(NFS_CS_REUSEPORT, &clp->cl_flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) args.flags |= RPC_CLNT_CREATE_REUSEPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) if (!IS_ERR(clp->cl_rpcclient))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) clnt = rpc_create(&args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) if (IS_ERR(clnt)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) dprintk("%s: cannot create RPC client. Error = %ld\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) __func__, PTR_ERR(clnt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) return PTR_ERR(clnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) clnt->cl_principal = clp->cl_principal;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) clp->cl_rpcclient = clnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) EXPORT_SYMBOL_GPL(nfs_create_rpc_client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) * Version 2 or 3 client destruction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) static void nfs_destroy_server(struct nfs_server *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) if (server->nlm_host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) nlmclnt_done(server->nlm_host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) * Version 2 or 3 lockd setup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) static int nfs_start_lockd(struct nfs_server *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) struct nlm_host *host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) struct nfs_client *clp = server->nfs_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) struct nlmclnt_initdata nlm_init = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) .hostname = clp->cl_hostname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) .address = (struct sockaddr *)&clp->cl_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) .addrlen = clp->cl_addrlen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) .nfs_version = clp->rpc_ops->version,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) .noresvport = server->flags & NFS_MOUNT_NORESVPORT ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) 1 : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) .net = clp->cl_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) .nlmclnt_ops = clp->cl_nfs_mod->rpc_ops->nlmclnt_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) .cred = current_cred(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) if (nlm_init.nfs_version > 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) if ((server->flags & NFS_MOUNT_LOCAL_FLOCK) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) (server->flags & NFS_MOUNT_LOCAL_FCNTL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) switch (clp->cl_proto) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) nlm_init.protocol = IPPROTO_TCP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) #ifndef CONFIG_NFS_DISABLE_UDP_SUPPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) case XPRT_TRANSPORT_UDP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) nlm_init.protocol = IPPROTO_UDP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) host = nlmclnt_init(&nlm_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) if (IS_ERR(host))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) return PTR_ERR(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) server->nlm_host = host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) server->destroy = nfs_destroy_server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) * Create a general RPC client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) int nfs_init_server_rpcclient(struct nfs_server *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) const struct rpc_timeout *timeo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) rpc_authflavor_t pseudoflavour)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) struct nfs_client *clp = server->nfs_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) server->client = rpc_clone_client_set_auth(clp->cl_rpcclient,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) pseudoflavour);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) if (IS_ERR(server->client)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) dprintk("%s: couldn't create rpc_client!\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) return PTR_ERR(server->client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) memcpy(&server->client->cl_timeout_default,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) timeo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) sizeof(server->client->cl_timeout_default));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) server->client->cl_timeout = &server->client->cl_timeout_default;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) server->client->cl_softrtry = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) if (server->flags & NFS_MOUNT_SOFTERR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) server->client->cl_softerr = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) if (server->flags & NFS_MOUNT_SOFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) server->client->cl_softrtry = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) EXPORT_SYMBOL_GPL(nfs_init_server_rpcclient);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) * nfs_init_client - Initialise an NFS2 or NFS3 client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) * @clp: nfs_client to initialise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) * @cl_init: Initialisation parameters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) * Returns pointer to an NFS client, or an ERR_PTR value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) struct nfs_client *nfs_init_client(struct nfs_client *clp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) const struct nfs_client_initdata *cl_init)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) /* the client is already initialised */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) if (clp->cl_cons_state == NFS_CS_READY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) return clp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) * Create a client RPC handle for doing FSSTAT with UNIX auth only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) * - RFC 2623, sec 2.3.2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) error = nfs_create_rpc_client(clp, cl_init, RPC_AUTH_UNIX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) nfs_mark_client_ready(clp, error == 0 ? NFS_CS_READY : error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) if (error < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) nfs_put_client(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) clp = ERR_PTR(error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) return clp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) EXPORT_SYMBOL_GPL(nfs_init_client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) * Create a version 2 or 3 client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) static int nfs_init_server(struct nfs_server *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) const struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) const struct nfs_fs_context *ctx = nfs_fc2context(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) struct rpc_timeout timeparms;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) struct nfs_client_initdata cl_init = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) .hostname = ctx->nfs_server.hostname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) .addr = (const struct sockaddr *)&ctx->nfs_server.address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) .addrlen = ctx->nfs_server.addrlen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) .nfs_mod = ctx->nfs_mod,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) .proto = ctx->nfs_server.protocol,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) .net = fc->net_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) .timeparms = &timeparms,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) .cred = server->cred,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) .nconnect = ctx->nfs_server.nconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) .init_flags = (1UL << NFS_CS_REUSEPORT),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) struct nfs_client *clp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) nfs_init_timeout_values(&timeparms, ctx->nfs_server.protocol,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) ctx->timeo, ctx->retrans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) if (ctx->flags & NFS_MOUNT_NORESVPORT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) /* Allocate or find a client reference we can use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) clp = nfs_get_client(&cl_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) if (IS_ERR(clp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) return PTR_ERR(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) server->nfs_client = clp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) /* Initialise the client representation from the mount data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) server->flags = ctx->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) server->options = ctx->options;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) server->caps |= NFS_CAP_HARDLINKS|NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|NFS_CAP_OWNER_GROUP|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) NFS_CAP_ATIME|NFS_CAP_CTIME|NFS_CAP_MTIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) if (ctx->rsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) server->rsize = nfs_block_size(ctx->rsize, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) if (ctx->wsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) server->wsize = nfs_block_size(ctx->wsize, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) server->acregmin = ctx->acregmin * HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) server->acregmax = ctx->acregmax * HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) server->acdirmin = ctx->acdirmin * HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) server->acdirmax = ctx->acdirmax * HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) /* Start lockd here, before we might error out */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) error = nfs_start_lockd(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) server->port = ctx->nfs_server.port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) server->auth_info = ctx->auth_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) error = nfs_init_server_rpcclient(server, &timeparms,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) ctx->selected_flavor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) /* Preserve the values of mount_server-related mount options */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) if (ctx->mount_server.addrlen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) memcpy(&server->mountd_address, &ctx->mount_server.address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) ctx->mount_server.addrlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) server->mountd_addrlen = ctx->mount_server.addrlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) server->mountd_version = ctx->mount_server.version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) server->mountd_port = ctx->mount_server.port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) server->mountd_protocol = ctx->mount_server.protocol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) server->namelen = ctx->namlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) server->nfs_client = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) nfs_put_client(clp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) * Load up the server record from information gained in an fsinfo record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) static void nfs_server_set_fsinfo(struct nfs_server *server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) struct nfs_fsinfo *fsinfo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) unsigned long max_rpc_payload, raw_max_rpc_payload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) /* Work out a lot of parameters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) if (server->rsize == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) server->rsize = nfs_block_size(fsinfo->rtpref, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) if (server->wsize == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) server->wsize = nfs_block_size(fsinfo->wtpref, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) if (fsinfo->rtmax >= 512 && server->rsize > fsinfo->rtmax)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) server->rsize = nfs_block_size(fsinfo->rtmax, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) if (fsinfo->wtmax >= 512 && server->wsize > fsinfo->wtmax)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) server->wsize = nfs_block_size(fsinfo->wtmax, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) raw_max_rpc_payload = rpc_max_payload(server->client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) max_rpc_payload = nfs_block_size(raw_max_rpc_payload, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) if (server->rsize > max_rpc_payload)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) server->rsize = max_rpc_payload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) if (server->rsize > NFS_MAX_FILE_IO_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) server->rsize = NFS_MAX_FILE_IO_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) server->rpages = (server->rsize + PAGE_SIZE - 1) >> PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) if (server->wsize > max_rpc_payload)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) server->wsize = max_rpc_payload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) if (server->wsize > NFS_MAX_FILE_IO_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) server->wsize = NFS_MAX_FILE_IO_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) server->wpages = (server->wsize + PAGE_SIZE - 1) >> PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) server->wtmult = nfs_block_bits(fsinfo->wtmult, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) server->dtsize = nfs_block_size(fsinfo->dtpref, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) if (server->dtsize > PAGE_SIZE * NFS_MAX_READDIR_PAGES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) server->dtsize = PAGE_SIZE * NFS_MAX_READDIR_PAGES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) if (server->dtsize > server->rsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) server->dtsize = server->rsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) if (server->flags & NFS_MOUNT_NOAC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) server->acregmin = server->acregmax = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) server->acdirmin = server->acdirmax = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) server->maxfilesize = fsinfo->maxfilesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) server->time_delta = fsinfo->time_delta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) server->clone_blksize = fsinfo->clone_blksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) /* We're airborne Set socket buffersize */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) rpc_setbufsize(server->client, server->wsize + 100, server->rsize + 100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) #ifdef CONFIG_NFS_V4_2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) * Defaults until limited by the session parameters.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) server->gxasize = min_t(unsigned int, raw_max_rpc_payload,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) XATTR_SIZE_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) server->sxasize = min_t(unsigned int, raw_max_rpc_payload,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) XATTR_SIZE_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) server->lxasize = min_t(unsigned int, raw_max_rpc_payload,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) nfs42_listxattr_xdrsize(XATTR_LIST_MAX));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) if (fsinfo->xattr_support)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) server->caps |= NFS_CAP_XATTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) * Probe filesystem information, including the FSID on v2/v3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, struct nfs_fattr *fattr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) struct nfs_fsinfo fsinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) struct nfs_client *clp = server->nfs_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) if (clp->rpc_ops->set_capabilities != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) error = clp->rpc_ops->set_capabilities(server, mntfh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) fsinfo.fattr = fattr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) fsinfo.nlayouttypes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) memset(fsinfo.layouttype, 0, sizeof(fsinfo.layouttype));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) error = clp->rpc_ops->fsinfo(server, mntfh, &fsinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) nfs_server_set_fsinfo(server, &fsinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) /* Get some general file system info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) if (server->namelen == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) struct nfs_pathconf pathinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) pathinfo.fattr = fattr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) nfs_fattr_init(fattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) if (clp->rpc_ops->pathconf(server, mntfh, &pathinfo) >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) server->namelen = pathinfo.max_namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) EXPORT_SYMBOL_GPL(nfs_probe_fsinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) * Copy useful information when duplicating a server record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_server *source)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) target->flags = source->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) target->rsize = source->rsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) target->wsize = source->wsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) target->acregmin = source->acregmin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) target->acregmax = source->acregmax;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) target->acdirmin = source->acdirmin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) target->acdirmax = source->acdirmax;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) target->caps = source->caps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) target->options = source->options;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) target->auth_info = source->auth_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) target->port = source->port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) EXPORT_SYMBOL_GPL(nfs_server_copy_userdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) void nfs_server_insert_lists(struct nfs_server *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) struct nfs_client *clp = server->nfs_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) spin_lock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) list_add_tail_rcu(&server->client_link, &clp->cl_superblocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) list_add_tail(&server->master_link, &nn->nfs_volume_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) clear_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) spin_unlock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) EXPORT_SYMBOL_GPL(nfs_server_insert_lists);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) void nfs_server_remove_lists(struct nfs_server *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) struct nfs_client *clp = server->nfs_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) struct nfs_net *nn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) if (clp == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) nn = net_generic(clp->cl_net, nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) spin_lock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) list_del_rcu(&server->client_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) if (list_empty(&clp->cl_superblocks))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) set_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) list_del(&server->master_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) spin_unlock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) synchronize_rcu();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) EXPORT_SYMBOL_GPL(nfs_server_remove_lists);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) * Allocate and initialise a server record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) struct nfs_server *nfs_alloc_server(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) struct nfs_server *server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) server = kzalloc(sizeof(struct nfs_server), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) if (!server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) server->client = server->client_acl = ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) /* Zero out the NFS state stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) INIT_LIST_HEAD(&server->client_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) INIT_LIST_HEAD(&server->master_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) INIT_LIST_HEAD(&server->delegations);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) INIT_LIST_HEAD(&server->layouts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) INIT_LIST_HEAD(&server->state_owners_lru);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) INIT_LIST_HEAD(&server->ss_copies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) atomic_set(&server->active, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) server->io_stats = nfs_alloc_iostats();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) if (!server->io_stats) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) kfree(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) ida_init(&server->openowner_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) ida_init(&server->lockowner_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) pnfs_init_server(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) rpc_init_wait_queue(&server->uoc_rpcwaitq, "NFS UOC");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) return server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) EXPORT_SYMBOL_GPL(nfs_alloc_server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) * Free up a server record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) void nfs_free_server(struct nfs_server *server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) nfs_server_remove_lists(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) if (server->destroy != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) server->destroy(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) if (!IS_ERR(server->client_acl))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) rpc_shutdown_client(server->client_acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) if (!IS_ERR(server->client))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) rpc_shutdown_client(server->client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) nfs_put_client(server->nfs_client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) ida_destroy(&server->lockowner_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) ida_destroy(&server->openowner_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) nfs_free_iostats(server->io_stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) put_cred(server->cred);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) kfree(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) nfs_release_automount_timer();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) EXPORT_SYMBOL_GPL(nfs_free_server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) * Create a version 2 or 3 volume record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) * - keyed on server and FSID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) struct nfs_server *nfs_create_server(struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) struct nfs_fs_context *ctx = nfs_fc2context(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) struct nfs_server *server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) struct nfs_fattr *fattr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) server = nfs_alloc_server();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) if (!server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) server->cred = get_cred(current_cred());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) fattr = nfs_alloc_fattr();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) if (fattr == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) /* Get a client representation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) error = nfs_init_server(server, fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) /* Probe the root fh to retrieve its FSID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) error = nfs_probe_fsinfo(server, ctx->mntfh, fattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) if (server->nfs_client->rpc_ops->version == 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) if (server->namelen == 0 || server->namelen > NFS3_MAXNAMLEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) server->namelen = NFS3_MAXNAMLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) if (!(ctx->flags & NFS_MOUNT_NORDIRPLUS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) server->caps |= NFS_CAP_READDIRPLUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) if (server->namelen == 0 || server->namelen > NFS2_MAXNAMLEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) server->namelen = NFS2_MAXNAMLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) if (!(fattr->valid & NFS_ATTR_FATTR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) error = ctx->nfs_mod->rpc_ops->getattr(server, ctx->mntfh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) fattr, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) if (error < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) dprintk("nfs_create_server: getattr error = %d\n", -error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) dprintk("Server FSID: %llx:%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) (unsigned long long) server->fsid.major,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) (unsigned long long) server->fsid.minor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) nfs_server_insert_lists(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) server->mount_time = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) nfs_free_fattr(fattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) return server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) nfs_free_fattr(fattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) nfs_free_server(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) return ERR_PTR(error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) EXPORT_SYMBOL_GPL(nfs_create_server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) * Clone an NFS2, NFS3 or NFS4 server record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) struct nfs_server *nfs_clone_server(struct nfs_server *source,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) struct nfs_fh *fh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) struct nfs_fattr *fattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) rpc_authflavor_t flavor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) struct nfs_server *server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) struct nfs_fattr *fattr_fsinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) server = nfs_alloc_server();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) if (!server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) server->cred = get_cred(source->cred);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) fattr_fsinfo = nfs_alloc_fattr();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) if (fattr_fsinfo == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) goto out_free_server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) /* Copy data from the source */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) server->nfs_client = source->nfs_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) server->destroy = source->destroy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) refcount_inc(&server->nfs_client->cl_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) nfs_server_copy_userdata(server, source);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) server->fsid = fattr->fsid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) error = nfs_init_server_rpcclient(server,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) source->client->cl_timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) flavor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) goto out_free_server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) /* probe the filesystem info for this server filesystem */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) error = nfs_probe_fsinfo(server, fh, fattr_fsinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) goto out_free_server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) if (server->namelen == 0 || server->namelen > NFS4_MAXNAMLEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) server->namelen = NFS4_MAXNAMLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) error = nfs_start_lockd(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) goto out_free_server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) nfs_server_insert_lists(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) server->mount_time = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) nfs_free_fattr(fattr_fsinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) return server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) out_free_server:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) nfs_free_fattr(fattr_fsinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) nfs_free_server(server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) return ERR_PTR(error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) EXPORT_SYMBOL_GPL(nfs_clone_server);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) void nfs_clients_init(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) struct nfs_net *nn = net_generic(net, nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) INIT_LIST_HEAD(&nn->nfs_client_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) INIT_LIST_HEAD(&nn->nfs_volume_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) #if IS_ENABLED(CONFIG_NFS_V4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) idr_init(&nn->cb_ident_idr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) spin_lock_init(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) nn->boot_time = ktime_get_real();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) nfs_netns_sysfs_setup(nn, net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) void nfs_clients_exit(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) struct nfs_net *nn = net_generic(net, nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) nfs_netns_sysfs_destroy(nn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) nfs_cleanup_cb_ident_idr(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) WARN_ON_ONCE(!list_empty(&nn->nfs_client_list));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) WARN_ON_ONCE(!list_empty(&nn->nfs_volume_list));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) #ifdef CONFIG_PROC_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) static void *nfs_server_list_start(struct seq_file *p, loff_t *pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) static void *nfs_server_list_next(struct seq_file *p, void *v, loff_t *pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) static void nfs_server_list_stop(struct seq_file *p, void *v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) static int nfs_server_list_show(struct seq_file *m, void *v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) static const struct seq_operations nfs_server_list_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) .start = nfs_server_list_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) .next = nfs_server_list_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) .stop = nfs_server_list_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) .show = nfs_server_list_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) static void *nfs_volume_list_start(struct seq_file *p, loff_t *pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) static void *nfs_volume_list_next(struct seq_file *p, void *v, loff_t *pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) static void nfs_volume_list_stop(struct seq_file *p, void *v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) static int nfs_volume_list_show(struct seq_file *m, void *v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) static const struct seq_operations nfs_volume_list_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) .start = nfs_volume_list_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) .next = nfs_volume_list_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) .stop = nfs_volume_list_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) .show = nfs_volume_list_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) * set up the iterator to start reading from the server list and return the first item
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) static void *nfs_server_list_start(struct seq_file *m, loff_t *_pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) __acquires(&nn->nfs_client_lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) struct nfs_net *nn = net_generic(seq_file_net(m), nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) /* lock the list against modification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) spin_lock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) return seq_list_start_head(&nn->nfs_client_list, *_pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) * move to next server
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) static void *nfs_server_list_next(struct seq_file *p, void *v, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) struct nfs_net *nn = net_generic(seq_file_net(p), nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) return seq_list_next(v, &nn->nfs_client_list, pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) * clean up after reading from the transports list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) static void nfs_server_list_stop(struct seq_file *p, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) __releases(&nn->nfs_client_lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) struct nfs_net *nn = net_generic(seq_file_net(p), nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) spin_unlock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) * display a header line followed by a load of call lines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) static int nfs_server_list_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) struct nfs_client *clp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) struct nfs_net *nn = net_generic(seq_file_net(m), nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) /* display header on line 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) if (v == &nn->nfs_client_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) seq_puts(m, "NV SERVER PORT USE HOSTNAME\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) /* display one transport per line on subsequent lines */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) clp = list_entry(v, struct nfs_client, cl_share_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) /* Check if the client is initialized */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) if (clp->cl_cons_state != NFS_CS_READY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) seq_printf(m, "v%u %s %s %3d %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) clp->rpc_ops->version,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_PORT),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) refcount_read(&clp->cl_count),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) clp->cl_hostname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) * set up the iterator to start reading from the volume list and return the first item
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) static void *nfs_volume_list_start(struct seq_file *m, loff_t *_pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) __acquires(&nn->nfs_client_lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) struct nfs_net *nn = net_generic(seq_file_net(m), nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) /* lock the list against modification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) spin_lock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) return seq_list_start_head(&nn->nfs_volume_list, *_pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) * move to next volume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) static void *nfs_volume_list_next(struct seq_file *p, void *v, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) struct nfs_net *nn = net_generic(seq_file_net(p), nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) return seq_list_next(v, &nn->nfs_volume_list, pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) * clean up after reading from the transports list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) static void nfs_volume_list_stop(struct seq_file *p, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) __releases(&nn->nfs_client_lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) struct nfs_net *nn = net_generic(seq_file_net(p), nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) spin_unlock(&nn->nfs_client_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) * display a header line followed by a load of call lines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) static int nfs_volume_list_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) struct nfs_server *server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) struct nfs_client *clp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) char dev[13]; // 8 for 2^24, 1 for ':', 3 for 2^8, 1 for '\0'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) char fsid[34]; // 2 * 16 for %llx, 1 for ':', 1 for '\0'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) struct nfs_net *nn = net_generic(seq_file_net(m), nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) /* display header on line 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) if (v == &nn->nfs_volume_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) seq_puts(m, "NV SERVER PORT DEV FSID"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) " FSC\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) /* display one transport per line on subsequent lines */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) server = list_entry(v, struct nfs_server, master_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) clp = server->nfs_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) snprintf(dev, sizeof(dev), "%u:%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) MAJOR(server->s_dev), MINOR(server->s_dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) snprintf(fsid, sizeof(fsid), "%llx:%llx",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) (unsigned long long) server->fsid.major,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) (unsigned long long) server->fsid.minor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) seq_printf(m, "v%u %s %s %-12s %-33s %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) clp->rpc_ops->version,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_PORT),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) fsid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) nfs_server_fscache_state(server));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) int nfs_fs_proc_net_init(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) struct nfs_net *nn = net_generic(net, nfs_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) struct proc_dir_entry *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) nn->proc_nfsfs = proc_net_mkdir(net, "nfsfs", net->proc_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) if (!nn->proc_nfsfs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) goto error_0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) /* a file of servers with which we're dealing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) p = proc_create_net("servers", S_IFREG|S_IRUGO, nn->proc_nfsfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) &nfs_server_list_ops, sizeof(struct seq_net_private));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) goto error_1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) /* a file of volumes that we have mounted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) p = proc_create_net("volumes", S_IFREG|S_IRUGO, nn->proc_nfsfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) &nfs_volume_list_ops, sizeof(struct seq_net_private));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) goto error_1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) error_1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) remove_proc_subtree("nfsfs", net->proc_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) error_0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) void nfs_fs_proc_net_exit(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) remove_proc_subtree("nfsfs", net->proc_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) * initialise the /proc/fs/nfsfs/ directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) int __init nfs_fs_proc_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) if (!proc_mkdir("fs/nfsfs", NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) goto error_0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) /* a file of servers with which we're dealing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) if (!proc_symlink("fs/nfsfs/servers", NULL, "../../net/nfsfs/servers"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) goto error_1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) /* a file of volumes that we have mounted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) if (!proc_symlink("fs/nfsfs/volumes", NULL, "../../net/nfsfs/volumes"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) goto error_1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) error_1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) remove_proc_subtree("fs/nfsfs", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) error_0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) * clean up the /proc/fs/nfsfs/ directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) void nfs_fs_proc_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) remove_proc_subtree("fs/nfsfs", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) #endif /* CONFIG_PROC_FS */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags