11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Syscall interface to knfsd. 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> 51da177e4SLinus Torvalds */ 61da177e4SLinus Torvalds 75a0e3ad6STejun Heo #include <linux/slab.h> 83f8206d4SAl Viro #include <linux/namei.h> 9b41b66d6SNeilBrown #include <linux/ctype.h> 101da177e4SLinus Torvalds 1180212d59SNeilBrown #include <linux/sunrpc/svcsock.h> 124373ea84SWendy Cheng #include <linux/lockd/lockd.h> 135976687aSJeff Layton #include <linux/sunrpc/addr.h> 14b0b0c0a2SKevin Coffman #include <linux/sunrpc/gss_api.h> 15b084f598SJ. Bruce Fields #include <linux/sunrpc/gss_krb5_enctypes.h> 16813fd320SJeff Layton #include <linux/sunrpc/rpc_pipe_fs.h> 17143cb494SPaul Gortmaker #include <linux/module.h> 181da177e4SLinus Torvalds 192ca72e17SJ. Bruce Fields #include "idmap.h" 209a74af21SBoaz Harrosh #include "nfsd.h" 219a74af21SBoaz Harrosh #include "cache.h" 22f3c7521fSBryan Schumaker #include "state.h" 237ea34ac1SJeff Layton #include "netns.h" 249a74af21SBoaz Harrosh 251da177e4SLinus Torvalds /* 26b0b0c0a2SKevin Coffman * We have a single directory with several nodes in it. 271da177e4SLinus Torvalds */ 281da177e4SLinus Torvalds enum { 291da177e4SLinus Torvalds NFSD_Root = 1, 301da177e4SLinus Torvalds NFSD_List, 31e8e8753fSJ. Bruce Fields NFSD_Export_features, 321da177e4SLinus Torvalds NFSD_Fh, 334373ea84SWendy Cheng NFSD_FO_UnlockIP, 3417efa372SWendy Cheng NFSD_FO_UnlockFS, 351da177e4SLinus Torvalds NFSD_Threads, 36eed2965aSGreg Banks NFSD_Pool_Threads, 3703cf6c9fSGreg Banks NFSD_Pool_Stats, 3870c3b76cSNeilBrown NFSD_Versions, 3980212d59SNeilBrown NFSD_Ports, 40596bbe53SNeilBrown NFSD_MaxBlkSize, 41b0b0c0a2SKevin Coffman NFSD_SupportedEnctypes, 4270c3b76cSNeilBrown /* 4370c3b76cSNeilBrown * The below MUST come last. Otherwise we leave a hole in nfsd_files[] 4470c3b76cSNeilBrown * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops 4570c3b76cSNeilBrown */ 4670c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 471da177e4SLinus Torvalds NFSD_Leasetime, 48efc4bb4fSJ. Bruce Fields NFSD_Gracetime, 490964a3d3SNeilBrown NFSD_RecoveryDir, 5070c3b76cSNeilBrown #endif 511da177e4SLinus Torvalds }; 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds /* 541da177e4SLinus Torvalds * write() for these nodes. 551da177e4SLinus Torvalds */ 561da177e4SLinus Torvalds static ssize_t write_filehandle(struct file *file, char *buf, size_t size); 57b046ccdcSChuck Lever static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size); 58b046ccdcSChuck Lever static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size); 591da177e4SLinus Torvalds static ssize_t write_threads(struct file *file, char *buf, size_t size); 60eed2965aSGreg Banks static ssize_t write_pool_threads(struct file *file, char *buf, size_t size); 6170c3b76cSNeilBrown static ssize_t write_versions(struct file *file, char *buf, size_t size); 6280212d59SNeilBrown static ssize_t write_ports(struct file *file, char *buf, size_t size); 63596bbe53SNeilBrown static ssize_t write_maxblksize(struct file *file, char *buf, size_t size); 6470c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 651da177e4SLinus Torvalds static ssize_t write_leasetime(struct file *file, char *buf, size_t size); 66efc4bb4fSJ. Bruce Fields static ssize_t write_gracetime(struct file *file, char *buf, size_t size); 670964a3d3SNeilBrown static ssize_t write_recoverydir(struct file *file, char *buf, size_t size); 6870c3b76cSNeilBrown #endif 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds static ssize_t (*write_op[])(struct file *, char *, size_t) = { 711da177e4SLinus Torvalds [NFSD_Fh] = write_filehandle, 72b046ccdcSChuck Lever [NFSD_FO_UnlockIP] = write_unlock_ip, 73b046ccdcSChuck Lever [NFSD_FO_UnlockFS] = write_unlock_fs, 741da177e4SLinus Torvalds [NFSD_Threads] = write_threads, 75eed2965aSGreg Banks [NFSD_Pool_Threads] = write_pool_threads, 7670c3b76cSNeilBrown [NFSD_Versions] = write_versions, 7780212d59SNeilBrown [NFSD_Ports] = write_ports, 78596bbe53SNeilBrown [NFSD_MaxBlkSize] = write_maxblksize, 7970c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 801da177e4SLinus Torvalds [NFSD_Leasetime] = write_leasetime, 81efc4bb4fSJ. Bruce Fields [NFSD_Gracetime] = write_gracetime, 820964a3d3SNeilBrown [NFSD_RecoveryDir] = write_recoverydir, 8370c3b76cSNeilBrown #endif 841da177e4SLinus Torvalds }; 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos) 871da177e4SLinus Torvalds { 88496ad9aaSAl Viro ino_t ino = file_inode(file)->i_ino; 891da177e4SLinus Torvalds char *data; 901da177e4SLinus Torvalds ssize_t rv; 911da177e4SLinus Torvalds 92e8c96f8cSTobias Klauser if (ino >= ARRAY_SIZE(write_op) || !write_op[ino]) 931da177e4SLinus Torvalds return -EINVAL; 941da177e4SLinus Torvalds 951da177e4SLinus Torvalds data = simple_transaction_get(file, buf, size); 961da177e4SLinus Torvalds if (IS_ERR(data)) 971da177e4SLinus Torvalds return PTR_ERR(data); 981da177e4SLinus Torvalds 991da177e4SLinus Torvalds rv = write_op[ino](file, data, size); 1008971a101SNeilBrown if (rv >= 0) { 1011da177e4SLinus Torvalds simple_transaction_set(file, rv); 1021da177e4SLinus Torvalds rv = size; 1031da177e4SLinus Torvalds } 1041da177e4SLinus Torvalds return rv; 1051da177e4SLinus Torvalds } 1061da177e4SLinus Torvalds 1077390022dSNeilBrown static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos) 1087390022dSNeilBrown { 1097390022dSNeilBrown if (! file->private_data) { 1107390022dSNeilBrown /* An attempt to read a transaction file without writing 1117390022dSNeilBrown * causes a 0-byte write so that the file can return 1127390022dSNeilBrown * state information 1137390022dSNeilBrown */ 1147390022dSNeilBrown ssize_t rv = nfsctl_transaction_write(file, buf, 0, pos); 1157390022dSNeilBrown if (rv < 0) 1167390022dSNeilBrown return rv; 1177390022dSNeilBrown } 1187390022dSNeilBrown return simple_transaction_read(file, buf, size, pos); 1197390022dSNeilBrown } 1207390022dSNeilBrown 1214b6f5d20SArjan van de Ven static const struct file_operations transaction_ops = { 1221da177e4SLinus Torvalds .write = nfsctl_transaction_write, 1237390022dSNeilBrown .read = nfsctl_transaction_read, 1241da177e4SLinus Torvalds .release = simple_transaction_release, 1256038f373SArnd Bergmann .llseek = default_llseek, 1261da177e4SLinus Torvalds }; 1271da177e4SLinus Torvalds 12896d851c4SStanislav Kinsbursky static int exports_net_open(struct net *net, struct file *file) 1291da177e4SLinus Torvalds { 130f2c7ea10SStanislav Kinsbursky int err; 131f2c7ea10SStanislav Kinsbursky struct seq_file *seq; 13296d851c4SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 133f2c7ea10SStanislav Kinsbursky 134f2c7ea10SStanislav Kinsbursky err = seq_open(file, &nfs_exports_op); 135f2c7ea10SStanislav Kinsbursky if (err) 136f2c7ea10SStanislav Kinsbursky return err; 137f2c7ea10SStanislav Kinsbursky 138f2c7ea10SStanislav Kinsbursky seq = file->private_data; 139e5f06f72SStanislav Kinsbursky seq->private = nn->svc_export_cache; 140f2c7ea10SStanislav Kinsbursky return 0; 1411da177e4SLinus Torvalds } 1421da177e4SLinus Torvalds 14396d851c4SStanislav Kinsbursky static int exports_proc_open(struct inode *inode, struct file *file) 14496d851c4SStanislav Kinsbursky { 14596d851c4SStanislav Kinsbursky return exports_net_open(current->nsproxy->net_ns, file); 14696d851c4SStanislav Kinsbursky } 14796d851c4SStanislav Kinsbursky 14896d851c4SStanislav Kinsbursky static const struct file_operations exports_proc_operations = { 14996d851c4SStanislav Kinsbursky .open = exports_proc_open, 15096d851c4SStanislav Kinsbursky .read = seq_read, 15196d851c4SStanislav Kinsbursky .llseek = seq_lseek, 15296d851c4SStanislav Kinsbursky .release = seq_release, 15396d851c4SStanislav Kinsbursky .owner = THIS_MODULE, 15496d851c4SStanislav Kinsbursky }; 15596d851c4SStanislav Kinsbursky 15696d851c4SStanislav Kinsbursky static int exports_nfsd_open(struct inode *inode, struct file *file) 15796d851c4SStanislav Kinsbursky { 15896d851c4SStanislav Kinsbursky return exports_net_open(inode->i_sb->s_fs_info, file); 15996d851c4SStanislav Kinsbursky } 16096d851c4SStanislav Kinsbursky 16196d851c4SStanislav Kinsbursky static const struct file_operations exports_nfsd_operations = { 16296d851c4SStanislav Kinsbursky .open = exports_nfsd_open, 1631da177e4SLinus Torvalds .read = seq_read, 1641da177e4SLinus Torvalds .llseek = seq_lseek, 1651da177e4SLinus Torvalds .release = seq_release, 1669ef2db26SDenis V. Lunev .owner = THIS_MODULE, 1671da177e4SLinus Torvalds }; 1681da177e4SLinus Torvalds 169e8e8753fSJ. Bruce Fields static int export_features_show(struct seq_file *m, void *v) 170e8e8753fSJ. Bruce Fields { 171e8e8753fSJ. Bruce Fields seq_printf(m, "0x%x 0x%x\n", NFSEXP_ALLFLAGS, NFSEXP_SECINFO_FLAGS); 172e8e8753fSJ. Bruce Fields return 0; 173e8e8753fSJ. Bruce Fields } 174e8e8753fSJ. Bruce Fields 175e8e8753fSJ. Bruce Fields static int export_features_open(struct inode *inode, struct file *file) 176e8e8753fSJ. Bruce Fields { 177e8e8753fSJ. Bruce Fields return single_open(file, export_features_show, NULL); 178e8e8753fSJ. Bruce Fields } 179e8e8753fSJ. Bruce Fields 180e8e8753fSJ. Bruce Fields static struct file_operations export_features_operations = { 181e8e8753fSJ. Bruce Fields .open = export_features_open, 182e8e8753fSJ. Bruce Fields .read = seq_read, 183e8e8753fSJ. Bruce Fields .llseek = seq_lseek, 184e8e8753fSJ. Bruce Fields .release = single_release, 185e8e8753fSJ. Bruce Fields }; 186e8e8753fSJ. Bruce Fields 187b084f598SJ. Bruce Fields #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) 188b0b0c0a2SKevin Coffman static int supported_enctypes_show(struct seq_file *m, void *v) 189b0b0c0a2SKevin Coffman { 190b084f598SJ. Bruce Fields seq_printf(m, KRB5_SUPPORTED_ENCTYPES); 191b0b0c0a2SKevin Coffman return 0; 192b0b0c0a2SKevin Coffman } 193b0b0c0a2SKevin Coffman 194b0b0c0a2SKevin Coffman static int supported_enctypes_open(struct inode *inode, struct file *file) 195b0b0c0a2SKevin Coffman { 196b0b0c0a2SKevin Coffman return single_open(file, supported_enctypes_show, NULL); 197b0b0c0a2SKevin Coffman } 198b0b0c0a2SKevin Coffman 199b0b0c0a2SKevin Coffman static struct file_operations supported_enctypes_ops = { 200b0b0c0a2SKevin Coffman .open = supported_enctypes_open, 201b0b0c0a2SKevin Coffman .read = seq_read, 202b0b0c0a2SKevin Coffman .llseek = seq_lseek, 203b0b0c0a2SKevin Coffman .release = single_release, 204b0b0c0a2SKevin Coffman }; 205b084f598SJ. Bruce Fields #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ 206b0b0c0a2SKevin Coffman 207828c0950SAlexey Dobriyan static const struct file_operations pool_stats_operations = { 20803cf6c9fSGreg Banks .open = nfsd_pool_stats_open, 20903cf6c9fSGreg Banks .read = seq_read, 21003cf6c9fSGreg Banks .llseek = seq_lseek, 211ed2d8aedSRyusei Yamaguchi .release = nfsd_pool_stats_release, 21203cf6c9fSGreg Banks .owner = THIS_MODULE, 21303cf6c9fSGreg Banks }; 21403cf6c9fSGreg Banks 2151da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 2161da177e4SLinus Torvalds /* 2171da177e4SLinus Torvalds * payload - write methods 2181da177e4SLinus Torvalds */ 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds 221262a0982SChuck Lever /** 222262a0982SChuck Lever * write_unlock_ip - Release all locks used by a client 223262a0982SChuck Lever * 224262a0982SChuck Lever * Experimental. 225262a0982SChuck Lever * 226262a0982SChuck Lever * Input: 227262a0982SChuck Lever * buf: '\n'-terminated C string containing a 2284116092bSChuck Lever * presentation format IP address 229262a0982SChuck Lever * size: length of C string in @buf 230262a0982SChuck Lever * Output: 231262a0982SChuck Lever * On success: returns zero if all specified locks were released; 232262a0982SChuck Lever * returns one if one or more locks were not released 233262a0982SChuck Lever * On error: return code is negative errno value 234262a0982SChuck Lever */ 235b046ccdcSChuck Lever static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size) 2364373ea84SWendy Cheng { 2374116092bSChuck Lever struct sockaddr_storage address; 2384116092bSChuck Lever struct sockaddr *sap = (struct sockaddr *)&address; 2394116092bSChuck Lever size_t salen = sizeof(address); 240367c8c7bSChuck Lever char *fo_path; 24111f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 2424373ea84SWendy Cheng 2434373ea84SWendy Cheng /* sanity check */ 2444373ea84SWendy Cheng if (size == 0) 2454373ea84SWendy Cheng return -EINVAL; 2464373ea84SWendy Cheng 2474373ea84SWendy Cheng if (buf[size-1] != '\n') 2484373ea84SWendy Cheng return -EINVAL; 2494373ea84SWendy Cheng 2504373ea84SWendy Cheng fo_path = buf; 2514373ea84SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 2524373ea84SWendy Cheng return -EINVAL; 2534373ea84SWendy Cheng 25411f77942SStanislav Kinsbursky if (rpc_pton(net, fo_path, size, sap, salen) == 0) 2554373ea84SWendy Cheng return -EINVAL; 2564373ea84SWendy Cheng 2574116092bSChuck Lever return nlmsvc_unlock_all_by_ip(sap); 2584373ea84SWendy Cheng } 2594373ea84SWendy Cheng 260262a0982SChuck Lever /** 261262a0982SChuck Lever * write_unlock_fs - Release all locks on a local file system 262262a0982SChuck Lever * 263262a0982SChuck Lever * Experimental. 264262a0982SChuck Lever * 265262a0982SChuck Lever * Input: 266262a0982SChuck Lever * buf: '\n'-terminated C string containing the 267262a0982SChuck Lever * absolute pathname of a local file system 268262a0982SChuck Lever * size: length of C string in @buf 269262a0982SChuck Lever * Output: 270262a0982SChuck Lever * On success: returns zero if all specified locks were released; 271262a0982SChuck Lever * returns one if one or more locks were not released 272262a0982SChuck Lever * On error: return code is negative errno value 273262a0982SChuck Lever */ 274b046ccdcSChuck Lever static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size) 27517efa372SWendy Cheng { 276a63bb996SAl Viro struct path path; 27717efa372SWendy Cheng char *fo_path; 27817efa372SWendy Cheng int error; 27917efa372SWendy Cheng 28017efa372SWendy Cheng /* sanity check */ 28117efa372SWendy Cheng if (size == 0) 28217efa372SWendy Cheng return -EINVAL; 28317efa372SWendy Cheng 28417efa372SWendy Cheng if (buf[size-1] != '\n') 28517efa372SWendy Cheng return -EINVAL; 28617efa372SWendy Cheng 28717efa372SWendy Cheng fo_path = buf; 28817efa372SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 28917efa372SWendy Cheng return -EINVAL; 29017efa372SWendy Cheng 291a63bb996SAl Viro error = kern_path(fo_path, 0, &path); 29217efa372SWendy Cheng if (error) 29317efa372SWendy Cheng return error; 29417efa372SWendy Cheng 295262a0982SChuck Lever /* 296262a0982SChuck Lever * XXX: Needs better sanity checking. Otherwise we could end up 297262a0982SChuck Lever * releasing locks on the wrong file system. 298262a0982SChuck Lever * 299262a0982SChuck Lever * For example: 300262a0982SChuck Lever * 1. Does the path refer to a directory? 301262a0982SChuck Lever * 2. Is that directory a mount point, or 302262a0982SChuck Lever * 3. Is that directory the root of an exported file system? 303262a0982SChuck Lever */ 304d8c9584eSAl Viro error = nlmsvc_unlock_all_by_sb(path.dentry->d_sb); 30517efa372SWendy Cheng 306a63bb996SAl Viro path_put(&path); 30717efa372SWendy Cheng return error; 30817efa372SWendy Cheng } 30917efa372SWendy Cheng 310262a0982SChuck Lever /** 311262a0982SChuck Lever * write_filehandle - Get a variable-length NFS file handle by path 312262a0982SChuck Lever * 313262a0982SChuck Lever * On input, the buffer contains a '\n'-terminated C string comprised of 314262a0982SChuck Lever * three alphanumeric words separated by whitespace. The string may 315262a0982SChuck Lever * contain escape sequences. 316262a0982SChuck Lever * 317262a0982SChuck Lever * Input: 318262a0982SChuck Lever * buf: 319262a0982SChuck Lever * domain: client domain name 320262a0982SChuck Lever * path: export pathname 321262a0982SChuck Lever * maxsize: numeric maximum size of 322262a0982SChuck Lever * @buf 323262a0982SChuck Lever * size: length of C string in @buf 324262a0982SChuck Lever * Output: 325262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 326262a0982SChuck Lever * string containing a ASCII hex text version 327262a0982SChuck Lever * of the NFS file handle; 328262a0982SChuck Lever * return code is the size in bytes of the string 329262a0982SChuck Lever * On error: return code is negative errno value 330262a0982SChuck Lever */ 3311da177e4SLinus Torvalds static ssize_t write_filehandle(struct file *file, char *buf, size_t size) 3321da177e4SLinus Torvalds { 3331da177e4SLinus Torvalds char *dname, *path; 334246d95baSAndrew Morton int uninitialized_var(maxsize); 3351da177e4SLinus Torvalds char *mesg = buf; 3361da177e4SLinus Torvalds int len; 3371da177e4SLinus Torvalds struct auth_domain *dom; 3381da177e4SLinus Torvalds struct knfsd_fh fh; 33911f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 3401da177e4SLinus Torvalds 34187d26ea7SJ. Bruce Fields if (size == 0) 34287d26ea7SJ. Bruce Fields return -EINVAL; 34387d26ea7SJ. Bruce Fields 3441da177e4SLinus Torvalds if (buf[size-1] != '\n') 3451da177e4SLinus Torvalds return -EINVAL; 3461da177e4SLinus Torvalds buf[size-1] = 0; 3471da177e4SLinus Torvalds 3481da177e4SLinus Torvalds dname = mesg; 3491da177e4SLinus Torvalds len = qword_get(&mesg, dname, size); 35054224f04SChuck Lever if (len <= 0) 35154224f04SChuck Lever return -EINVAL; 3521da177e4SLinus Torvalds 3531da177e4SLinus Torvalds path = dname+len+1; 3541da177e4SLinus Torvalds len = qword_get(&mesg, path, size); 35554224f04SChuck Lever if (len <= 0) 35654224f04SChuck Lever return -EINVAL; 3571da177e4SLinus Torvalds 3581da177e4SLinus Torvalds len = get_int(&mesg, &maxsize); 3591da177e4SLinus Torvalds if (len) 3601da177e4SLinus Torvalds return len; 3611da177e4SLinus Torvalds 3621da177e4SLinus Torvalds if (maxsize < NFS_FHSIZE) 3631da177e4SLinus Torvalds return -EINVAL; 3641da177e4SLinus Torvalds if (maxsize > NFS3_FHSIZE) 3651da177e4SLinus Torvalds maxsize = NFS3_FHSIZE; 3661da177e4SLinus Torvalds 3671da177e4SLinus Torvalds if (qword_get(&mesg, mesg, size)>0) 3681da177e4SLinus Torvalds return -EINVAL; 3691da177e4SLinus Torvalds 3701da177e4SLinus Torvalds /* we have all the words, they are in buf.. */ 3711da177e4SLinus Torvalds dom = unix_domain_find(dname); 3721da177e4SLinus Torvalds if (!dom) 3731da177e4SLinus Torvalds return -ENOMEM; 3741da177e4SLinus Torvalds 37511f77942SStanislav Kinsbursky len = exp_rootfh(net, dom, path, &fh, maxsize); 3761da177e4SLinus Torvalds auth_domain_put(dom); 3771da177e4SLinus Torvalds if (len) 3781da177e4SLinus Torvalds return len; 3791da177e4SLinus Torvalds 38054224f04SChuck Lever mesg = buf; 38154224f04SChuck Lever len = SIMPLE_TRANSACTION_LIMIT; 3821da177e4SLinus Torvalds qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size); 3831da177e4SLinus Torvalds mesg[-1] = '\n'; 3841da177e4SLinus Torvalds return mesg - buf; 3851da177e4SLinus Torvalds } 3861da177e4SLinus Torvalds 387262a0982SChuck Lever /** 388262a0982SChuck Lever * write_threads - Start NFSD, or report the current number of running threads 389262a0982SChuck Lever * 390262a0982SChuck Lever * Input: 391262a0982SChuck Lever * buf: ignored 392262a0982SChuck Lever * size: zero 393262a0982SChuck Lever * Output: 394262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 395262a0982SChuck Lever * string numeric value representing the number of 396262a0982SChuck Lever * running NFSD threads; 397262a0982SChuck Lever * return code is the size in bytes of the string 398262a0982SChuck Lever * On error: return code is zero 399262a0982SChuck Lever * 400262a0982SChuck Lever * OR 401262a0982SChuck Lever * 402262a0982SChuck Lever * Input: 403262a0982SChuck Lever * buf: C string containing an unsigned 404262a0982SChuck Lever * integer value representing the 405262a0982SChuck Lever * number of NFSD threads to start 406262a0982SChuck Lever * size: non-zero length of C string in @buf 407262a0982SChuck Lever * Output: 408262a0982SChuck Lever * On success: NFS service is started; 409262a0982SChuck Lever * passed-in buffer filled with '\n'-terminated C 410262a0982SChuck Lever * string numeric value representing the number of 411262a0982SChuck Lever * running NFSD threads; 412262a0982SChuck Lever * return code is the size in bytes of the string 413262a0982SChuck Lever * On error: return code is zero or a negative errno value 414262a0982SChuck Lever */ 4151da177e4SLinus Torvalds static ssize_t write_threads(struct file *file, char *buf, size_t size) 4161da177e4SLinus Torvalds { 4171da177e4SLinus Torvalds char *mesg = buf; 4181da177e4SLinus Torvalds int rv; 41911f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 420d41a9417SStanislav Kinsbursky 4211da177e4SLinus Torvalds if (size > 0) { 4221da177e4SLinus Torvalds int newthreads; 4231da177e4SLinus Torvalds rv = get_int(&mesg, &newthreads); 4241da177e4SLinus Torvalds if (rv) 4251da177e4SLinus Torvalds return rv; 4261da177e4SLinus Torvalds if (newthreads < 0) 4271da177e4SLinus Torvalds return -EINVAL; 428d41a9417SStanislav Kinsbursky rv = nfsd_svc(newthreads, net); 42982e12fe9SNeilBrown if (rv < 0) 4301da177e4SLinus Torvalds return rv; 43182e12fe9SNeilBrown } else 4329dd9845fSStanislav Kinsbursky rv = nfsd_nrthreads(net); 433e06b6405SChuck Lever 43482e12fe9SNeilBrown return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv); 4351da177e4SLinus Torvalds } 4361da177e4SLinus Torvalds 437262a0982SChuck Lever /** 438262a0982SChuck Lever * write_pool_threads - Set or report the current number of threads per pool 439262a0982SChuck Lever * 440262a0982SChuck Lever * Input: 441262a0982SChuck Lever * buf: ignored 442262a0982SChuck Lever * size: zero 443262a0982SChuck Lever * 444262a0982SChuck Lever * OR 445262a0982SChuck Lever * 446262a0982SChuck Lever * Input: 447262a0982SChuck Lever * buf: C string containing whitespace- 448262a0982SChuck Lever * separated unsigned integer values 449262a0982SChuck Lever * representing the number of NFSD 450262a0982SChuck Lever * threads to start in each pool 451262a0982SChuck Lever * size: non-zero length of C string in @buf 452262a0982SChuck Lever * Output: 453262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 454262a0982SChuck Lever * string containing integer values representing the 455262a0982SChuck Lever * number of NFSD threads in each pool; 456262a0982SChuck Lever * return code is the size in bytes of the string 457262a0982SChuck Lever * On error: return code is zero or a negative errno value 458262a0982SChuck Lever */ 459eed2965aSGreg Banks static ssize_t write_pool_threads(struct file *file, char *buf, size_t size) 460eed2965aSGreg Banks { 461eed2965aSGreg Banks /* if size > 0, look for an array of number of threads per node 462eed2965aSGreg Banks * and apply them then write out number of threads per node as reply 463eed2965aSGreg Banks */ 464eed2965aSGreg Banks char *mesg = buf; 465eed2965aSGreg Banks int i; 466eed2965aSGreg Banks int rv; 467eed2965aSGreg Banks int len; 468bedbdd8bSNeil Brown int npools; 469eed2965aSGreg Banks int *nthreads; 47011f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 471eed2965aSGreg Banks 472bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 4739dd9845fSStanislav Kinsbursky npools = nfsd_nrpools(net); 474eed2965aSGreg Banks if (npools == 0) { 475eed2965aSGreg Banks /* 476eed2965aSGreg Banks * NFS is shut down. The admin can start it by 477eed2965aSGreg Banks * writing to the threads file but NOT the pool_threads 478eed2965aSGreg Banks * file, sorry. Report zero threads. 479eed2965aSGreg Banks */ 480bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 481eed2965aSGreg Banks strcpy(buf, "0\n"); 482eed2965aSGreg Banks return strlen(buf); 483eed2965aSGreg Banks } 484eed2965aSGreg Banks 485eed2965aSGreg Banks nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL); 486bedbdd8bSNeil Brown rv = -ENOMEM; 487eed2965aSGreg Banks if (nthreads == NULL) 488bedbdd8bSNeil Brown goto out_free; 489eed2965aSGreg Banks 490eed2965aSGreg Banks if (size > 0) { 491eed2965aSGreg Banks for (i = 0; i < npools; i++) { 492eed2965aSGreg Banks rv = get_int(&mesg, &nthreads[i]); 493eed2965aSGreg Banks if (rv == -ENOENT) 494eed2965aSGreg Banks break; /* fewer numbers than pools */ 495eed2965aSGreg Banks if (rv) 496eed2965aSGreg Banks goto out_free; /* syntax error */ 497eed2965aSGreg Banks rv = -EINVAL; 498eed2965aSGreg Banks if (nthreads[i] < 0) 499eed2965aSGreg Banks goto out_free; 500eed2965aSGreg Banks } 5013938a0d5SStanislav Kinsbursky rv = nfsd_set_nrthreads(i, nthreads, net); 502eed2965aSGreg Banks if (rv) 503eed2965aSGreg Banks goto out_free; 504eed2965aSGreg Banks } 505eed2965aSGreg Banks 5069dd9845fSStanislav Kinsbursky rv = nfsd_get_nrthreads(npools, nthreads, net); 507eed2965aSGreg Banks if (rv) 508eed2965aSGreg Banks goto out_free; 509eed2965aSGreg Banks 510eed2965aSGreg Banks mesg = buf; 511eed2965aSGreg Banks size = SIMPLE_TRANSACTION_LIMIT; 512eed2965aSGreg Banks for (i = 0; i < npools && size > 0; i++) { 513eed2965aSGreg Banks snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' ')); 514eed2965aSGreg Banks len = strlen(mesg); 515eed2965aSGreg Banks size -= len; 516eed2965aSGreg Banks mesg += len; 517eed2965aSGreg Banks } 518413d63d7SJ. Bruce Fields rv = mesg - buf; 519eed2965aSGreg Banks out_free: 520eed2965aSGreg Banks kfree(nthreads); 521bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 522eed2965aSGreg Banks return rv; 523eed2965aSGreg Banks } 524eed2965aSGreg Banks 5253dd98a3bSJeff Layton static ssize_t __write_versions(struct file *file, char *buf, size_t size) 52670c3b76cSNeilBrown { 52770c3b76cSNeilBrown char *mesg = buf; 5288daf220aSBenny Halevy char *vers, *minorp, sign; 529261758b5SChuck Lever int len, num, remaining; 5308daf220aSBenny Halevy unsigned minor; 53170c3b76cSNeilBrown ssize_t tlen = 0; 53270c3b76cSNeilBrown char *sep; 53311f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 5349dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 53570c3b76cSNeilBrown 53670c3b76cSNeilBrown if (size>0) { 5379dd9845fSStanislav Kinsbursky if (nn->nfsd_serv) 5386658d3a7SNeilBrown /* Cannot change versions without updating 5399dd9845fSStanislav Kinsbursky * nn->nfsd_serv->sv_xdrsize, and reallocing 5406658d3a7SNeilBrown * rq_argp and rq_resp 5416658d3a7SNeilBrown */ 54270c3b76cSNeilBrown return -EBUSY; 54370c3b76cSNeilBrown if (buf[size-1] != '\n') 54470c3b76cSNeilBrown return -EINVAL; 54570c3b76cSNeilBrown buf[size-1] = 0; 54670c3b76cSNeilBrown 54770c3b76cSNeilBrown vers = mesg; 54870c3b76cSNeilBrown len = qword_get(&mesg, vers, size); 54970c3b76cSNeilBrown if (len <= 0) return -EINVAL; 55070c3b76cSNeilBrown do { 55170c3b76cSNeilBrown sign = *vers; 55270c3b76cSNeilBrown if (sign == '+' || sign == '-') 5538daf220aSBenny Halevy num = simple_strtol((vers+1), &minorp, 0); 55470c3b76cSNeilBrown else 5558daf220aSBenny Halevy num = simple_strtol(vers, &minorp, 0); 5568daf220aSBenny Halevy if (*minorp == '.') { 557ff89be87SJ. Bruce Fields if (num != 4) 5588daf220aSBenny Halevy return -EINVAL; 5598daf220aSBenny Halevy minor = simple_strtoul(minorp+1, NULL, 0); 5608daf220aSBenny Halevy if (minor == 0) 5618daf220aSBenny Halevy return -EINVAL; 5628daf220aSBenny Halevy if (nfsd_minorversion(minor, sign == '-' ? 5638daf220aSBenny Halevy NFSD_CLEAR : NFSD_SET) < 0) 5648daf220aSBenny Halevy return -EINVAL; 5658daf220aSBenny Halevy goto next; 5668daf220aSBenny Halevy } 56770c3b76cSNeilBrown switch(num) { 56870c3b76cSNeilBrown case 2: 56970c3b76cSNeilBrown case 3: 57070c3b76cSNeilBrown case 4: 5716658d3a7SNeilBrown nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET); 57270c3b76cSNeilBrown break; 57370c3b76cSNeilBrown default: 57470c3b76cSNeilBrown return -EINVAL; 57570c3b76cSNeilBrown } 5768daf220aSBenny Halevy next: 57770c3b76cSNeilBrown vers += len + 1; 57870c3b76cSNeilBrown } while ((len = qword_get(&mesg, vers, size)) > 0); 57970c3b76cSNeilBrown /* If all get turned off, turn them back on, as 58070c3b76cSNeilBrown * having no versions is BAD 58170c3b76cSNeilBrown */ 5826658d3a7SNeilBrown nfsd_reset_versions(); 58370c3b76cSNeilBrown } 584261758b5SChuck Lever 58570c3b76cSNeilBrown /* Now write current state into reply buffer */ 58670c3b76cSNeilBrown len = 0; 58770c3b76cSNeilBrown sep = ""; 588261758b5SChuck Lever remaining = SIMPLE_TRANSACTION_LIMIT; 58970c3b76cSNeilBrown for (num=2 ; num <= 4 ; num++) 5906658d3a7SNeilBrown if (nfsd_vers(num, NFSD_AVAIL)) { 591261758b5SChuck Lever len = snprintf(buf, remaining, "%s%c%d", sep, 5926658d3a7SNeilBrown nfsd_vers(num, NFSD_TEST)?'+':'-', 59370c3b76cSNeilBrown num); 59470c3b76cSNeilBrown sep = " "; 595261758b5SChuck Lever 596261758b5SChuck Lever if (len > remaining) 597261758b5SChuck Lever break; 598261758b5SChuck Lever remaining -= len; 599261758b5SChuck Lever buf += len; 600261758b5SChuck Lever tlen += len; 60170c3b76cSNeilBrown } 6028daf220aSBenny Halevy if (nfsd_vers(4, NFSD_AVAIL)) 603261758b5SChuck Lever for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; 604261758b5SChuck Lever minor++) { 605261758b5SChuck Lever len = snprintf(buf, remaining, " %c4.%u", 6068daf220aSBenny Halevy (nfsd_vers(4, NFSD_TEST) && 6078daf220aSBenny Halevy nfsd_minorversion(minor, NFSD_TEST)) ? 6088daf220aSBenny Halevy '+' : '-', 6098daf220aSBenny Halevy minor); 610261758b5SChuck Lever 611261758b5SChuck Lever if (len > remaining) 612261758b5SChuck Lever break; 613261758b5SChuck Lever remaining -= len; 614261758b5SChuck Lever buf += len; 615261758b5SChuck Lever tlen += len; 616261758b5SChuck Lever } 617261758b5SChuck Lever 618261758b5SChuck Lever len = snprintf(buf, remaining, "\n"); 619261758b5SChuck Lever if (len > remaining) 620261758b5SChuck Lever return -EINVAL; 621261758b5SChuck Lever return tlen + len; 62270c3b76cSNeilBrown } 62370c3b76cSNeilBrown 624262a0982SChuck Lever /** 625262a0982SChuck Lever * write_versions - Set or report the available NFS protocol versions 626262a0982SChuck Lever * 627262a0982SChuck Lever * Input: 628262a0982SChuck Lever * buf: ignored 629262a0982SChuck Lever * size: zero 630262a0982SChuck Lever * Output: 631262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 632262a0982SChuck Lever * string containing positive or negative integer 633262a0982SChuck Lever * values representing the current status of each 634262a0982SChuck Lever * protocol version; 635262a0982SChuck Lever * return code is the size in bytes of the string 636262a0982SChuck Lever * On error: return code is zero or a negative errno value 637262a0982SChuck Lever * 638262a0982SChuck Lever * OR 639262a0982SChuck Lever * 640262a0982SChuck Lever * Input: 641262a0982SChuck Lever * buf: C string containing whitespace- 642262a0982SChuck Lever * separated positive or negative 643262a0982SChuck Lever * integer values representing NFS 644262a0982SChuck Lever * protocol versions to enable ("+n") 645262a0982SChuck Lever * or disable ("-n") 646262a0982SChuck Lever * size: non-zero length of C string in @buf 647262a0982SChuck Lever * Output: 648262a0982SChuck Lever * On success: status of zero or more protocol versions has 649262a0982SChuck Lever * been updated; passed-in buffer filled with 650262a0982SChuck Lever * '\n'-terminated C string containing positive 651262a0982SChuck Lever * or negative integer values representing the 652262a0982SChuck Lever * current status of each protocol version; 653262a0982SChuck Lever * return code is the size in bytes of the string 654262a0982SChuck Lever * On error: return code is zero or a negative errno value 655262a0982SChuck Lever */ 6563dd98a3bSJeff Layton static ssize_t write_versions(struct file *file, char *buf, size_t size) 6573dd98a3bSJeff Layton { 6583dd98a3bSJeff Layton ssize_t rv; 6593dd98a3bSJeff Layton 6603dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 6613dd98a3bSJeff Layton rv = __write_versions(file, buf, size); 6623dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 6633dd98a3bSJeff Layton return rv; 6643dd98a3bSJeff Layton } 6653dd98a3bSJeff Layton 6664cd5dc75SChuck Lever /* 6670a5372d8SChuck Lever * Zero-length write. Return a list of NFSD's current listener 6680a5372d8SChuck Lever * transports. 6690a5372d8SChuck Lever */ 6709dd9845fSStanislav Kinsbursky static ssize_t __write_ports_names(char *buf, struct net *net) 6710a5372d8SChuck Lever { 6729dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 6739dd9845fSStanislav Kinsbursky 6749dd9845fSStanislav Kinsbursky if (nn->nfsd_serv == NULL) 6750a5372d8SChuck Lever return 0; 6769dd9845fSStanislav Kinsbursky return svc_xprt_names(nn->nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT); 6770a5372d8SChuck Lever } 6780a5372d8SChuck Lever 6790a5372d8SChuck Lever /* 6800b7c2f6fSChuck Lever * A single 'fd' number was written, in which case it must be for 6810b7c2f6fSChuck Lever * a socket of a supported family/protocol, and we use it as an 6820b7c2f6fSChuck Lever * nfsd listener. 6830b7c2f6fSChuck Lever */ 68408160352SStanislav Kinsbursky static ssize_t __write_ports_addfd(char *buf, struct net *net) 6850b7c2f6fSChuck Lever { 6860b7c2f6fSChuck Lever char *mesg = buf; 6870b7c2f6fSChuck Lever int fd, err; 6889dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 6890b7c2f6fSChuck Lever 6900b7c2f6fSChuck Lever err = get_int(&mesg, &fd); 6910b7c2f6fSChuck Lever if (err != 0 || fd < 0) 6920b7c2f6fSChuck Lever return -EINVAL; 6930b7c2f6fSChuck Lever 6946777436bSStanislav Kinsbursky err = nfsd_create_serv(net); 6950b7c2f6fSChuck Lever if (err != 0) 6960b7c2f6fSChuck Lever return err; 6970b7c2f6fSChuck Lever 6989dd9845fSStanislav Kinsbursky err = svc_addsock(nn->nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT); 69978a8d7c8SJeff Layton if (err < 0) { 70019f7e2caSStanislav Kinsbursky nfsd_destroy(net); 70178a8d7c8SJeff Layton return err; 70278a8d7c8SJeff Layton } 703ea068badSChuck Lever 7040b7c2f6fSChuck Lever /* Decrease the count, but don't shut down the service */ 7059dd9845fSStanislav Kinsbursky nn->nfsd_serv->sv_nrthreads--; 706ea068badSChuck Lever return err; 7070b7c2f6fSChuck Lever } 7080b7c2f6fSChuck Lever 7090b7c2f6fSChuck Lever /* 7104eb68c26SChuck Lever * A transport listener is added by writing it's transport name and 7114eb68c26SChuck Lever * a port number. 7124eb68c26SChuck Lever */ 71308160352SStanislav Kinsbursky static ssize_t __write_ports_addxprt(char *buf, struct net *net) 7144eb68c26SChuck Lever { 7154eb68c26SChuck Lever char transport[16]; 71637498292SChuck Lever struct svc_xprt *xprt; 7174eb68c26SChuck Lever int port, err; 7189dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 7194eb68c26SChuck Lever 720a10fded1SJ. Bruce Fields if (sscanf(buf, "%15s %5u", transport, &port) != 2) 7214eb68c26SChuck Lever return -EINVAL; 7224eb68c26SChuck Lever 7234be929beSAlexey Dobriyan if (port < 1 || port > USHRT_MAX) 7244eb68c26SChuck Lever return -EINVAL; 7254eb68c26SChuck Lever 7266777436bSStanislav Kinsbursky err = nfsd_create_serv(net); 7274eb68c26SChuck Lever if (err != 0) 7284eb68c26SChuck Lever return err; 7294eb68c26SChuck Lever 7309dd9845fSStanislav Kinsbursky err = svc_create_xprt(nn->nfsd_serv, transport, net, 7314eb68c26SChuck Lever PF_INET, port, SVC_SOCK_ANONYMOUS); 73268717908SChuck Lever if (err < 0) 73337498292SChuck Lever goto out_err; 73437498292SChuck Lever 7359dd9845fSStanislav Kinsbursky err = svc_create_xprt(nn->nfsd_serv, transport, net, 73637498292SChuck Lever PF_INET6, port, SVC_SOCK_ANONYMOUS); 73737498292SChuck Lever if (err < 0 && err != -EAFNOSUPPORT) 73837498292SChuck Lever goto out_close; 7390cd14a06SJeff Layton 7400cd14a06SJeff Layton /* Decrease the count, but don't shut down the service */ 7419dd9845fSStanislav Kinsbursky nn->nfsd_serv->sv_nrthreads--; 7424eb68c26SChuck Lever return 0; 74337498292SChuck Lever out_close: 7449dd9845fSStanislav Kinsbursky xprt = svc_find_xprt(nn->nfsd_serv, transport, net, PF_INET, port); 74537498292SChuck Lever if (xprt != NULL) { 74637498292SChuck Lever svc_close_xprt(xprt); 74737498292SChuck Lever svc_xprt_put(xprt); 74837498292SChuck Lever } 74937498292SChuck Lever out_err: 75019f7e2caSStanislav Kinsbursky nfsd_destroy(net); 75137498292SChuck Lever return err; 7524eb68c26SChuck Lever } 7534eb68c26SChuck Lever 75408160352SStanislav Kinsbursky static ssize_t __write_ports(struct file *file, char *buf, size_t size, 75508160352SStanislav Kinsbursky struct net *net) 75680212d59SNeilBrown { 7570a5372d8SChuck Lever if (size == 0) 7589dd9845fSStanislav Kinsbursky return __write_ports_names(buf, net); 7590b7c2f6fSChuck Lever 7600b7c2f6fSChuck Lever if (isdigit(buf[0])) 76108160352SStanislav Kinsbursky return __write_ports_addfd(buf, net); 76282d56591SChuck Lever 7634eb68c26SChuck Lever if (isalpha(buf[0])) 76408160352SStanislav Kinsbursky return __write_ports_addxprt(buf, net); 7654cd5dc75SChuck Lever 766b41b66d6SNeilBrown return -EINVAL; 767b41b66d6SNeilBrown } 76880212d59SNeilBrown 769262a0982SChuck Lever /** 770262a0982SChuck Lever * write_ports - Pass a socket file descriptor or transport name to listen on 771262a0982SChuck Lever * 772262a0982SChuck Lever * Input: 773262a0982SChuck Lever * buf: ignored 774262a0982SChuck Lever * size: zero 775262a0982SChuck Lever * Output: 776262a0982SChuck Lever * On success: passed-in buffer filled with a '\n'-terminated C 777262a0982SChuck Lever * string containing a whitespace-separated list of 778262a0982SChuck Lever * named NFSD listeners; 779262a0982SChuck Lever * return code is the size in bytes of the string 780262a0982SChuck Lever * On error: return code is zero or a negative errno value 781262a0982SChuck Lever * 782262a0982SChuck Lever * OR 783262a0982SChuck Lever * 784262a0982SChuck Lever * Input: 785262a0982SChuck Lever * buf: C string containing an unsigned 786262a0982SChuck Lever * integer value representing a bound 787262a0982SChuck Lever * but unconnected socket that is to be 788c71206a7SChuck Lever * used as an NFSD listener; listen(3) 789c71206a7SChuck Lever * must be called for a SOCK_STREAM 790c71206a7SChuck Lever * socket, otherwise it is ignored 791262a0982SChuck Lever * size: non-zero length of C string in @buf 792262a0982SChuck Lever * Output: 793262a0982SChuck Lever * On success: NFS service is started; 794262a0982SChuck Lever * passed-in buffer filled with a '\n'-terminated C 795262a0982SChuck Lever * string containing a unique alphanumeric name of 796262a0982SChuck Lever * the listener; 797262a0982SChuck Lever * return code is the size in bytes of the string 798262a0982SChuck Lever * On error: return code is a negative errno value 799262a0982SChuck Lever * 800262a0982SChuck Lever * OR 801262a0982SChuck Lever * 802262a0982SChuck Lever * Input: 803262a0982SChuck Lever * buf: C string containing a transport 804262a0982SChuck Lever * name and an unsigned integer value 805262a0982SChuck Lever * representing the port to listen on, 806262a0982SChuck Lever * separated by whitespace 807262a0982SChuck Lever * size: non-zero length of C string in @buf 808262a0982SChuck Lever * Output: 809262a0982SChuck Lever * On success: returns zero; NFS service is started 810262a0982SChuck Lever * On error: return code is a negative errno value 811262a0982SChuck Lever */ 812bedbdd8bSNeil Brown static ssize_t write_ports(struct file *file, char *buf, size_t size) 813bedbdd8bSNeil Brown { 814bedbdd8bSNeil Brown ssize_t rv; 81511f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 8163dd98a3bSJeff Layton 817bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 81808160352SStanislav Kinsbursky rv = __write_ports(file, buf, size, net); 819bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 820bedbdd8bSNeil Brown return rv; 821bedbdd8bSNeil Brown } 822bedbdd8bSNeil Brown 823bedbdd8bSNeil Brown 824596bbe53SNeilBrown int nfsd_max_blksize; 825596bbe53SNeilBrown 826262a0982SChuck Lever /** 827262a0982SChuck Lever * write_maxblksize - Set or report the current NFS blksize 828262a0982SChuck Lever * 829262a0982SChuck Lever * Input: 830262a0982SChuck Lever * buf: ignored 831262a0982SChuck Lever * size: zero 832262a0982SChuck Lever * 833262a0982SChuck Lever * OR 834262a0982SChuck Lever * 835262a0982SChuck Lever * Input: 836262a0982SChuck Lever * buf: C string containing an unsigned 837262a0982SChuck Lever * integer value representing the new 838262a0982SChuck Lever * NFS blksize 839262a0982SChuck Lever * size: non-zero length of C string in @buf 840262a0982SChuck Lever * Output: 841262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C string 842262a0982SChuck Lever * containing numeric value of the current NFS blksize 843262a0982SChuck Lever * setting; 844262a0982SChuck Lever * return code is the size in bytes of the string 845262a0982SChuck Lever * On error: return code is zero or a negative errno value 846262a0982SChuck Lever */ 847596bbe53SNeilBrown static ssize_t write_maxblksize(struct file *file, char *buf, size_t size) 848596bbe53SNeilBrown { 849596bbe53SNeilBrown char *mesg = buf; 85011f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 8519dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 8529dd9845fSStanislav Kinsbursky 853596bbe53SNeilBrown if (size > 0) { 854596bbe53SNeilBrown int bsize; 855596bbe53SNeilBrown int rv = get_int(&mesg, &bsize); 856596bbe53SNeilBrown if (rv) 857596bbe53SNeilBrown return rv; 858596bbe53SNeilBrown /* force bsize into allowed range and 859596bbe53SNeilBrown * required alignment. 860596bbe53SNeilBrown */ 861596bbe53SNeilBrown if (bsize < 1024) 862596bbe53SNeilBrown bsize = 1024; 863596bbe53SNeilBrown if (bsize > NFSSVC_MAXBLKSIZE) 864596bbe53SNeilBrown bsize = NFSSVC_MAXBLKSIZE; 865596bbe53SNeilBrown bsize &= ~(1024-1); 866bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 8679dd9845fSStanislav Kinsbursky if (nn->nfsd_serv) { 868bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 869596bbe53SNeilBrown return -EBUSY; 870596bbe53SNeilBrown } 871596bbe53SNeilBrown nfsd_max_blksize = bsize; 872bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 873596bbe53SNeilBrown } 874e06b6405SChuck Lever 875e06b6405SChuck Lever return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", 876e06b6405SChuck Lever nfsd_max_blksize); 877596bbe53SNeilBrown } 878596bbe53SNeilBrown 87970c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 8809dd9845fSStanislav Kinsbursky static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, 8819dd9845fSStanislav Kinsbursky time_t *time, struct nfsd_net *nn) 8821da177e4SLinus Torvalds { 8831da177e4SLinus Torvalds char *mesg = buf; 884f0135740SJ. Bruce Fields int rv, i; 8851da177e4SLinus Torvalds 8861da177e4SLinus Torvalds if (size > 0) { 8879dd9845fSStanislav Kinsbursky if (nn->nfsd_serv) 8883dd98a3bSJeff Layton return -EBUSY; 889f0135740SJ. Bruce Fields rv = get_int(&mesg, &i); 8901da177e4SLinus Torvalds if (rv) 8911da177e4SLinus Torvalds return rv; 892e7b184f1SJ. Bruce Fields /* 893e7b184f1SJ. Bruce Fields * Some sanity checking. We don't have a reason for 894e7b184f1SJ. Bruce Fields * these particular numbers, but problems with the 895e7b184f1SJ. Bruce Fields * extremes are: 896e7b184f1SJ. Bruce Fields * - Too short: the briefest network outage may 897e7b184f1SJ. Bruce Fields * cause clients to lose all their locks. Also, 898e7b184f1SJ. Bruce Fields * the frequent polling may be wasteful. 899e7b184f1SJ. Bruce Fields * - Too long: do you really want reboot recovery 900e7b184f1SJ. Bruce Fields * to take more than an hour? Or to make other 901e7b184f1SJ. Bruce Fields * clients wait an hour before being able to 902e7b184f1SJ. Bruce Fields * revoke a dead client's locks? 903e7b184f1SJ. Bruce Fields */ 904f0135740SJ. Bruce Fields if (i < 10 || i > 3600) 9051da177e4SLinus Torvalds return -EINVAL; 906f0135740SJ. Bruce Fields *time = i; 9071da177e4SLinus Torvalds } 908e06b6405SChuck Lever 909f0135740SJ. Bruce Fields return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time); 910f0135740SJ. Bruce Fields } 911f0135740SJ. Bruce Fields 9129dd9845fSStanislav Kinsbursky static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, 9139dd9845fSStanislav Kinsbursky time_t *time, struct nfsd_net *nn) 914f0135740SJ. Bruce Fields { 915f0135740SJ. Bruce Fields ssize_t rv; 916f0135740SJ. Bruce Fields 917f0135740SJ. Bruce Fields mutex_lock(&nfsd_mutex); 9189dd9845fSStanislav Kinsbursky rv = __nfsd4_write_time(file, buf, size, time, nn); 919f0135740SJ. Bruce Fields mutex_unlock(&nfsd_mutex); 920f0135740SJ. Bruce Fields return rv; 9211da177e4SLinus Torvalds } 9221da177e4SLinus Torvalds 923262a0982SChuck Lever /** 924262a0982SChuck Lever * write_leasetime - Set or report the current NFSv4 lease time 925262a0982SChuck Lever * 926262a0982SChuck Lever * Input: 927262a0982SChuck Lever * buf: ignored 928262a0982SChuck Lever * size: zero 929262a0982SChuck Lever * 930262a0982SChuck Lever * OR 931262a0982SChuck Lever * 932262a0982SChuck Lever * Input: 933262a0982SChuck Lever * buf: C string containing an unsigned 934262a0982SChuck Lever * integer value representing the new 935262a0982SChuck Lever * NFSv4 lease expiry time 936262a0982SChuck Lever * size: non-zero length of C string in @buf 937262a0982SChuck Lever * Output: 938262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 939262a0982SChuck Lever * string containing unsigned integer value of the 940262a0982SChuck Lever * current lease expiry time; 941262a0982SChuck Lever * return code is the size in bytes of the string 942262a0982SChuck Lever * On error: return code is zero or a negative errno value 943262a0982SChuck Lever */ 9443dd98a3bSJeff Layton static ssize_t write_leasetime(struct file *file, char *buf, size_t size) 9453dd98a3bSJeff Layton { 94611f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 94711f77942SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 9489dd9845fSStanislav Kinsbursky return nfsd4_write_time(file, buf, size, &nn->nfsd4_lease, nn); 9493dd98a3bSJeff Layton } 9503dd98a3bSJeff Layton 951efc4bb4fSJ. Bruce Fields /** 952efc4bb4fSJ. Bruce Fields * write_gracetime - Set or report current NFSv4 grace period time 953efc4bb4fSJ. Bruce Fields * 954efc4bb4fSJ. Bruce Fields * As above, but sets the time of the NFSv4 grace period. 955efc4bb4fSJ. Bruce Fields * 956efc4bb4fSJ. Bruce Fields * Note this should never be set to less than the *previous* 957efc4bb4fSJ. Bruce Fields * lease-period time, but we don't try to enforce this. (In the common 958efc4bb4fSJ. Bruce Fields * case (a new boot), we don't know what the previous lease time was 959efc4bb4fSJ. Bruce Fields * anyway.) 960efc4bb4fSJ. Bruce Fields */ 961efc4bb4fSJ. Bruce Fields static ssize_t write_gracetime(struct file *file, char *buf, size_t size) 962efc4bb4fSJ. Bruce Fields { 96311f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 96411f77942SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 9659dd9845fSStanislav Kinsbursky return nfsd4_write_time(file, buf, size, &nn->nfsd4_grace, nn); 966efc4bb4fSJ. Bruce Fields } 967efc4bb4fSJ. Bruce Fields 9689dd9845fSStanislav Kinsbursky static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size, 9699dd9845fSStanislav Kinsbursky struct nfsd_net *nn) 9700964a3d3SNeilBrown { 9710964a3d3SNeilBrown char *mesg = buf; 9720964a3d3SNeilBrown char *recdir; 9730964a3d3SNeilBrown int len, status; 9740964a3d3SNeilBrown 9753dd98a3bSJeff Layton if (size > 0) { 9769dd9845fSStanislav Kinsbursky if (nn->nfsd_serv) 9773dd98a3bSJeff Layton return -EBUSY; 9783dd98a3bSJeff Layton if (size > PATH_MAX || buf[size-1] != '\n') 9790964a3d3SNeilBrown return -EINVAL; 9800964a3d3SNeilBrown buf[size-1] = 0; 9810964a3d3SNeilBrown 9820964a3d3SNeilBrown recdir = mesg; 9830964a3d3SNeilBrown len = qword_get(&mesg, recdir, size); 9840964a3d3SNeilBrown if (len <= 0) 9850964a3d3SNeilBrown return -EINVAL; 9860964a3d3SNeilBrown 9870964a3d3SNeilBrown status = nfs4_reset_recoverydir(recdir); 98869049961SAndi Kleen if (status) 98969049961SAndi Kleen return status; 9903dd98a3bSJeff Layton } 9913d72ab8fSChuck Lever 9923d72ab8fSChuck Lever return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n", 9933d72ab8fSChuck Lever nfs4_recoverydir()); 9940964a3d3SNeilBrown } 9953dd98a3bSJeff Layton 996262a0982SChuck Lever /** 997262a0982SChuck Lever * write_recoverydir - Set or report the pathname of the recovery directory 998262a0982SChuck Lever * 999262a0982SChuck Lever * Input: 1000262a0982SChuck Lever * buf: ignored 1001262a0982SChuck Lever * size: zero 1002262a0982SChuck Lever * 1003262a0982SChuck Lever * OR 1004262a0982SChuck Lever * 1005262a0982SChuck Lever * Input: 1006262a0982SChuck Lever * buf: C string containing the pathname 1007262a0982SChuck Lever * of the directory on a local file 1008262a0982SChuck Lever * system containing permanent NFSv4 1009262a0982SChuck Lever * recovery data 1010262a0982SChuck Lever * size: non-zero length of C string in @buf 1011262a0982SChuck Lever * Output: 1012262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C string 1013262a0982SChuck Lever * containing the current recovery pathname setting; 1014262a0982SChuck Lever * return code is the size in bytes of the string 1015262a0982SChuck Lever * On error: return code is zero or a negative errno value 1016262a0982SChuck Lever */ 10173dd98a3bSJeff Layton static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) 10183dd98a3bSJeff Layton { 10193dd98a3bSJeff Layton ssize_t rv; 102011f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 102111f77942SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 10223dd98a3bSJeff Layton 10233dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 10249dd9845fSStanislav Kinsbursky rv = __write_recoverydir(file, buf, size, nn); 10253dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 10263dd98a3bSJeff Layton return rv; 10273dd98a3bSJeff Layton } 10283dd98a3bSJeff Layton 102970c3b76cSNeilBrown #endif 10300964a3d3SNeilBrown 10311da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 10321da177e4SLinus Torvalds /* 10331da177e4SLinus Torvalds * populating the filesystem. 10341da177e4SLinus Torvalds */ 10351da177e4SLinus Torvalds 10361da177e4SLinus Torvalds static int nfsd_fill_super(struct super_block * sb, void * data, int silent) 10371da177e4SLinus Torvalds { 10381da177e4SLinus Torvalds static struct tree_descr nfsd_files[] = { 103996d851c4SStanislav Kinsbursky [NFSD_List] = {"exports", &exports_nfsd_operations, S_IRUGO}, 1040e8e8753fSJ. Bruce Fields [NFSD_Export_features] = {"export_features", 1041e8e8753fSJ. Bruce Fields &export_features_operations, S_IRUGO}, 10424373ea84SWendy Cheng [NFSD_FO_UnlockIP] = {"unlock_ip", 10434373ea84SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 104417efa372SWendy Cheng [NFSD_FO_UnlockFS] = {"unlock_filesystem", 104517efa372SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 10461da177e4SLinus Torvalds [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, 10471da177e4SLinus Torvalds [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, 1048eed2965aSGreg Banks [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR}, 104903cf6c9fSGreg Banks [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO}, 105070c3b76cSNeilBrown [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, 105180212d59SNeilBrown [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, 1052596bbe53SNeilBrown [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO}, 1053b084f598SJ. Bruce Fields #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) 1054b0b0c0a2SKevin Coffman [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO}, 1055b084f598SJ. Bruce Fields #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ 10561da177e4SLinus Torvalds #ifdef CONFIG_NFSD_V4 10571da177e4SLinus Torvalds [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, 1058efc4bb4fSJ. Bruce Fields [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR}, 10590964a3d3SNeilBrown [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, 10601da177e4SLinus Torvalds #endif 10611da177e4SLinus Torvalds /* last one */ {""} 10621da177e4SLinus Torvalds }; 106311f77942SStanislav Kinsbursky struct net *net = data; 106411f77942SStanislav Kinsbursky int ret; 106511f77942SStanislav Kinsbursky 106611f77942SStanislav Kinsbursky ret = simple_fill_super(sb, 0x6e667364, nfsd_files); 106711f77942SStanislav Kinsbursky if (ret) 106811f77942SStanislav Kinsbursky return ret; 106911f77942SStanislav Kinsbursky sb->s_fs_info = get_net(net); 107011f77942SStanislav Kinsbursky return 0; 10711da177e4SLinus Torvalds } 10721da177e4SLinus Torvalds 1073fc14f2feSAl Viro static struct dentry *nfsd_mount(struct file_system_type *fs_type, 1074fc14f2feSAl Viro int flags, const char *dev_name, void *data) 10751da177e4SLinus Torvalds { 107611f77942SStanislav Kinsbursky return mount_ns(fs_type, flags, current->nsproxy->net_ns, nfsd_fill_super); 107711f77942SStanislav Kinsbursky } 107811f77942SStanislav Kinsbursky 107911f77942SStanislav Kinsbursky static void nfsd_umount(struct super_block *sb) 108011f77942SStanislav Kinsbursky { 108111f77942SStanislav Kinsbursky struct net *net = sb->s_fs_info; 108211f77942SStanislav Kinsbursky 108311f77942SStanislav Kinsbursky kill_litter_super(sb); 108411f77942SStanislav Kinsbursky put_net(net); 10851da177e4SLinus Torvalds } 10861da177e4SLinus Torvalds 10871da177e4SLinus Torvalds static struct file_system_type nfsd_fs_type = { 10881da177e4SLinus Torvalds .owner = THIS_MODULE, 10891da177e4SLinus Torvalds .name = "nfsd", 1090fc14f2feSAl Viro .mount = nfsd_mount, 109111f77942SStanislav Kinsbursky .kill_sb = nfsd_umount, 10921da177e4SLinus Torvalds }; 1093*7f78e035SEric W. Biederman MODULE_ALIAS_FS("nfsd"); 10941da177e4SLinus Torvalds 1095e331f606SJ. Bruce Fields #ifdef CONFIG_PROC_FS 1096e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 1097e331f606SJ. Bruce Fields { 1098e331f606SJ. Bruce Fields struct proc_dir_entry *entry; 1099e331f606SJ. Bruce Fields 1100e331f606SJ. Bruce Fields entry = proc_mkdir("fs/nfs", NULL); 1101e331f606SJ. Bruce Fields if (!entry) 1102e331f606SJ. Bruce Fields return -ENOMEM; 110396d851c4SStanislav Kinsbursky entry = proc_create("exports", 0, entry, 110496d851c4SStanislav Kinsbursky &exports_proc_operations); 1105e331f606SJ. Bruce Fields if (!entry) 1106e331f606SJ. Bruce Fields return -ENOMEM; 1107e331f606SJ. Bruce Fields return 0; 1108e331f606SJ. Bruce Fields } 1109e331f606SJ. Bruce Fields #else /* CONFIG_PROC_FS */ 1110e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 1111e331f606SJ. Bruce Fields { 1112e331f606SJ. Bruce Fields return 0; 1113e331f606SJ. Bruce Fields } 1114e331f606SJ. Bruce Fields #endif 1115e331f606SJ. Bruce Fields 11167ea34ac1SJeff Layton int nfsd_net_id; 11175717e012SStanislav Kinsbursky 11185717e012SStanislav Kinsbursky static __net_init int nfsd_init_net(struct net *net) 11195717e012SStanislav Kinsbursky { 11205717e012SStanislav Kinsbursky int retval; 11213d733711SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 11225717e012SStanislav Kinsbursky 11235717e012SStanislav Kinsbursky retval = nfsd_export_init(net); 11245717e012SStanislav Kinsbursky if (retval) 11255717e012SStanislav Kinsbursky goto out_export_error; 1126f69adb2fSStanislav Kinsbursky retval = nfsd_idmap_init(net); 1127f69adb2fSStanislav Kinsbursky if (retval) 1128f69adb2fSStanislav Kinsbursky goto out_idmap_error; 11293d733711SStanislav Kinsbursky nn->nfsd4_lease = 90; /* default lease time */ 11305284b44eSStanislav Kinsbursky nn->nfsd4_grace = 90; 11315717e012SStanislav Kinsbursky return 0; 11325717e012SStanislav Kinsbursky 1133f69adb2fSStanislav Kinsbursky out_idmap_error: 1134f69adb2fSStanislav Kinsbursky nfsd_export_shutdown(net); 11355717e012SStanislav Kinsbursky out_export_error: 11365717e012SStanislav Kinsbursky return retval; 11375717e012SStanislav Kinsbursky } 11385717e012SStanislav Kinsbursky 11395717e012SStanislav Kinsbursky static __net_exit void nfsd_exit_net(struct net *net) 11405717e012SStanislav Kinsbursky { 1141f69adb2fSStanislav Kinsbursky nfsd_idmap_shutdown(net); 11425717e012SStanislav Kinsbursky nfsd_export_shutdown(net); 11435717e012SStanislav Kinsbursky } 11445717e012SStanislav Kinsbursky 11457ea34ac1SJeff Layton static struct pernet_operations nfsd_net_ops = { 11465717e012SStanislav Kinsbursky .init = nfsd_init_net, 11475717e012SStanislav Kinsbursky .exit = nfsd_exit_net, 11487ea34ac1SJeff Layton .id = &nfsd_net_id, 11497ea34ac1SJeff Layton .size = sizeof(struct nfsd_net), 11507ea34ac1SJeff Layton }; 11517ea34ac1SJeff Layton 11521da177e4SLinus Torvalds static int __init init_nfsd(void) 11531da177e4SLinus Torvalds { 11541da177e4SLinus Torvalds int retval; 11551da177e4SLinus Torvalds printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n"); 11561da177e4SLinus Torvalds 1157797a9d79SJeff Layton retval = register_cld_notifier(); 1158813fd320SJeff Layton if (retval) 1159813fd320SJeff Layton return retval; 11607ea34ac1SJeff Layton retval = register_pernet_subsys(&nfsd_net_ops); 11617ea34ac1SJeff Layton if (retval < 0) 1162813fd320SJeff Layton goto out_unregister_notifier; 116372083396SBryan Schumaker retval = nfsd4_init_slabs(); 1164e8ff2a84SJ. Bruce Fields if (retval) 11657ea34ac1SJeff Layton goto out_unregister_pernet; 116672083396SBryan Schumaker nfs4_state_init(); 116765178db4SBryan Schumaker retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */ 116865178db4SBryan Schumaker if (retval) 116965178db4SBryan Schumaker goto out_free_slabs; 11701da177e4SLinus Torvalds nfsd_stat_init(); /* Statistics */ 1171d5c3428bSJ. Bruce Fields retval = nfsd_reply_cache_init(); 1172d5c3428bSJ. Bruce Fields if (retval) 1173d5c3428bSJ. Bruce Fields goto out_free_stat; 11741da177e4SLinus Torvalds nfsd_lockd_init(); /* lockd->nfsd callbacks */ 1175e331f606SJ. Bruce Fields retval = create_proc_exports_entry(); 1176e331f606SJ. Bruce Fields if (retval) 1177f69adb2fSStanislav Kinsbursky goto out_free_lockd; 11781da177e4SLinus Torvalds retval = register_filesystem(&nfsd_fs_type); 117926808d3fSJ. Bruce Fields if (retval) 118026808d3fSJ. Bruce Fields goto out_free_all; 118126808d3fSJ. Bruce Fields return 0; 118226808d3fSJ. Bruce Fields out_free_all: 11831da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 11841da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 1185dbf847ecSJ. Bruce Fields out_free_lockd: 11861da177e4SLinus Torvalds nfsd_lockd_shutdown(); 1187e331f606SJ. Bruce Fields nfsd_reply_cache_shutdown(); 1188d5c3428bSJ. Bruce Fields out_free_stat: 1189d5c3428bSJ. Bruce Fields nfsd_stat_shutdown(); 119065178db4SBryan Schumaker nfsd_fault_inject_cleanup(); 119165178db4SBryan Schumaker out_free_slabs: 119246b25895SJ. Bruce Fields nfsd4_free_slabs(); 11937ea34ac1SJeff Layton out_unregister_pernet: 11947ea34ac1SJeff Layton unregister_pernet_subsys(&nfsd_net_ops); 1195813fd320SJeff Layton out_unregister_notifier: 1196797a9d79SJeff Layton unregister_cld_notifier(); 11971da177e4SLinus Torvalds return retval; 11981da177e4SLinus Torvalds } 11991da177e4SLinus Torvalds 12001da177e4SLinus Torvalds static void __exit exit_nfsd(void) 12011da177e4SLinus Torvalds { 1202d5c3428bSJ. Bruce Fields nfsd_reply_cache_shutdown(); 12031da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 12041da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 12051da177e4SLinus Torvalds nfsd_stat_shutdown(); 12061da177e4SLinus Torvalds nfsd_lockd_shutdown(); 1207e8ff2a84SJ. Bruce Fields nfsd4_free_slabs(); 120865178db4SBryan Schumaker nfsd_fault_inject_cleanup(); 12091da177e4SLinus Torvalds unregister_filesystem(&nfsd_fs_type); 12107ea34ac1SJeff Layton unregister_pernet_subsys(&nfsd_net_ops); 1211797a9d79SJeff Layton unregister_cld_notifier(); 12121da177e4SLinus Torvalds } 12131da177e4SLinus Torvalds 12141da177e4SLinus Torvalds MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); 12151da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 12161da177e4SLinus Torvalds module_init(init_nfsd) 12171da177e4SLinus Torvalds module_exit(exit_nfsd) 1218