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> 134116092bSChuck Lever #include <linux/sunrpc/clnt.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" 2265178db4SBryan Schumaker #include "fault_inject.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 { 887eaa36e2SJosef "Jeff" Sipek ino_t ino = file->f_path.dentry->d_inode->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 1281da177e4SLinus Torvalds static int exports_open(struct inode *inode, struct file *file) 1291da177e4SLinus Torvalds { 130f2c7ea10SStanislav Kinsbursky int err; 131f2c7ea10SStanislav Kinsbursky struct seq_file *seq; 132*e5f06f72SStanislav Kinsbursky struct nfsd_net *nn = net_generic(&init_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; 139*e5f06f72SStanislav Kinsbursky seq->private = nn->svc_export_cache; 140f2c7ea10SStanislav Kinsbursky return 0; 1411da177e4SLinus Torvalds } 1421da177e4SLinus Torvalds 1434b6f5d20SArjan van de Ven static const struct file_operations exports_operations = { 1441da177e4SLinus Torvalds .open = exports_open, 1451da177e4SLinus Torvalds .read = seq_read, 1461da177e4SLinus Torvalds .llseek = seq_lseek, 1471da177e4SLinus Torvalds .release = seq_release, 1489ef2db26SDenis V. Lunev .owner = THIS_MODULE, 1491da177e4SLinus Torvalds }; 1501da177e4SLinus Torvalds 151e8e8753fSJ. Bruce Fields static int export_features_show(struct seq_file *m, void *v) 152e8e8753fSJ. Bruce Fields { 153e8e8753fSJ. Bruce Fields seq_printf(m, "0x%x 0x%x\n", NFSEXP_ALLFLAGS, NFSEXP_SECINFO_FLAGS); 154e8e8753fSJ. Bruce Fields return 0; 155e8e8753fSJ. Bruce Fields } 156e8e8753fSJ. Bruce Fields 157e8e8753fSJ. Bruce Fields static int export_features_open(struct inode *inode, struct file *file) 158e8e8753fSJ. Bruce Fields { 159e8e8753fSJ. Bruce Fields return single_open(file, export_features_show, NULL); 160e8e8753fSJ. Bruce Fields } 161e8e8753fSJ. Bruce Fields 162e8e8753fSJ. Bruce Fields static struct file_operations export_features_operations = { 163e8e8753fSJ. Bruce Fields .open = export_features_open, 164e8e8753fSJ. Bruce Fields .read = seq_read, 165e8e8753fSJ. Bruce Fields .llseek = seq_lseek, 166e8e8753fSJ. Bruce Fields .release = single_release, 167e8e8753fSJ. Bruce Fields }; 168e8e8753fSJ. Bruce Fields 169b084f598SJ. Bruce Fields #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) 170b0b0c0a2SKevin Coffman static int supported_enctypes_show(struct seq_file *m, void *v) 171b0b0c0a2SKevin Coffman { 172b084f598SJ. Bruce Fields seq_printf(m, KRB5_SUPPORTED_ENCTYPES); 173b0b0c0a2SKevin Coffman return 0; 174b0b0c0a2SKevin Coffman } 175b0b0c0a2SKevin Coffman 176b0b0c0a2SKevin Coffman static int supported_enctypes_open(struct inode *inode, struct file *file) 177b0b0c0a2SKevin Coffman { 178b0b0c0a2SKevin Coffman return single_open(file, supported_enctypes_show, NULL); 179b0b0c0a2SKevin Coffman } 180b0b0c0a2SKevin Coffman 181b0b0c0a2SKevin Coffman static struct file_operations supported_enctypes_ops = { 182b0b0c0a2SKevin Coffman .open = supported_enctypes_open, 183b0b0c0a2SKevin Coffman .read = seq_read, 184b0b0c0a2SKevin Coffman .llseek = seq_lseek, 185b0b0c0a2SKevin Coffman .release = single_release, 186b0b0c0a2SKevin Coffman }; 187b084f598SJ. Bruce Fields #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ 188b0b0c0a2SKevin Coffman 18903cf6c9fSGreg Banks extern int nfsd_pool_stats_open(struct inode *inode, struct file *file); 190ed2d8aedSRyusei Yamaguchi extern int nfsd_pool_stats_release(struct inode *inode, struct file *file); 19103cf6c9fSGreg Banks 192828c0950SAlexey Dobriyan static const struct file_operations pool_stats_operations = { 19303cf6c9fSGreg Banks .open = nfsd_pool_stats_open, 19403cf6c9fSGreg Banks .read = seq_read, 19503cf6c9fSGreg Banks .llseek = seq_lseek, 196ed2d8aedSRyusei Yamaguchi .release = nfsd_pool_stats_release, 19703cf6c9fSGreg Banks .owner = THIS_MODULE, 19803cf6c9fSGreg Banks }; 19903cf6c9fSGreg Banks 2001da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 2011da177e4SLinus Torvalds /* 2021da177e4SLinus Torvalds * payload - write methods 2031da177e4SLinus Torvalds */ 2041da177e4SLinus Torvalds 2051da177e4SLinus Torvalds 206262a0982SChuck Lever /** 207262a0982SChuck Lever * write_unlock_ip - Release all locks used by a client 208262a0982SChuck Lever * 209262a0982SChuck Lever * Experimental. 210262a0982SChuck Lever * 211262a0982SChuck Lever * Input: 212262a0982SChuck Lever * buf: '\n'-terminated C string containing a 2134116092bSChuck Lever * presentation format IP address 214262a0982SChuck Lever * size: length of C string in @buf 215262a0982SChuck Lever * Output: 216262a0982SChuck Lever * On success: returns zero if all specified locks were released; 217262a0982SChuck Lever * returns one if one or more locks were not released 218262a0982SChuck Lever * On error: return code is negative errno value 219262a0982SChuck Lever */ 220b046ccdcSChuck Lever static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size) 2214373ea84SWendy Cheng { 2224116092bSChuck Lever struct sockaddr_storage address; 2234116092bSChuck Lever struct sockaddr *sap = (struct sockaddr *)&address; 2244116092bSChuck Lever size_t salen = sizeof(address); 225367c8c7bSChuck Lever char *fo_path; 2264373ea84SWendy Cheng 2274373ea84SWendy Cheng /* sanity check */ 2284373ea84SWendy Cheng if (size == 0) 2294373ea84SWendy Cheng return -EINVAL; 2304373ea84SWendy Cheng 2314373ea84SWendy Cheng if (buf[size-1] != '\n') 2324373ea84SWendy Cheng return -EINVAL; 2334373ea84SWendy Cheng 2344373ea84SWendy Cheng fo_path = buf; 2354373ea84SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 2364373ea84SWendy Cheng return -EINVAL; 2374373ea84SWendy Cheng 23890100b17SStanislav Kinsbursky if (rpc_pton(&init_net, fo_path, size, sap, salen) == 0) 2394373ea84SWendy Cheng return -EINVAL; 2404373ea84SWendy Cheng 2414116092bSChuck Lever return nlmsvc_unlock_all_by_ip(sap); 2424373ea84SWendy Cheng } 2434373ea84SWendy Cheng 244262a0982SChuck Lever /** 245262a0982SChuck Lever * write_unlock_fs - Release all locks on a local file system 246262a0982SChuck Lever * 247262a0982SChuck Lever * Experimental. 248262a0982SChuck Lever * 249262a0982SChuck Lever * Input: 250262a0982SChuck Lever * buf: '\n'-terminated C string containing the 251262a0982SChuck Lever * absolute pathname of a local file system 252262a0982SChuck Lever * size: length of C string in @buf 253262a0982SChuck Lever * Output: 254262a0982SChuck Lever * On success: returns zero if all specified locks were released; 255262a0982SChuck Lever * returns one if one or more locks were not released 256262a0982SChuck Lever * On error: return code is negative errno value 257262a0982SChuck Lever */ 258b046ccdcSChuck Lever static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size) 25917efa372SWendy Cheng { 260a63bb996SAl Viro struct path path; 26117efa372SWendy Cheng char *fo_path; 26217efa372SWendy Cheng int error; 26317efa372SWendy Cheng 26417efa372SWendy Cheng /* sanity check */ 26517efa372SWendy Cheng if (size == 0) 26617efa372SWendy Cheng return -EINVAL; 26717efa372SWendy Cheng 26817efa372SWendy Cheng if (buf[size-1] != '\n') 26917efa372SWendy Cheng return -EINVAL; 27017efa372SWendy Cheng 27117efa372SWendy Cheng fo_path = buf; 27217efa372SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 27317efa372SWendy Cheng return -EINVAL; 27417efa372SWendy Cheng 275a63bb996SAl Viro error = kern_path(fo_path, 0, &path); 27617efa372SWendy Cheng if (error) 27717efa372SWendy Cheng return error; 27817efa372SWendy Cheng 279262a0982SChuck Lever /* 280262a0982SChuck Lever * XXX: Needs better sanity checking. Otherwise we could end up 281262a0982SChuck Lever * releasing locks on the wrong file system. 282262a0982SChuck Lever * 283262a0982SChuck Lever * For example: 284262a0982SChuck Lever * 1. Does the path refer to a directory? 285262a0982SChuck Lever * 2. Is that directory a mount point, or 286262a0982SChuck Lever * 3. Is that directory the root of an exported file system? 287262a0982SChuck Lever */ 288d8c9584eSAl Viro error = nlmsvc_unlock_all_by_sb(path.dentry->d_sb); 28917efa372SWendy Cheng 290a63bb996SAl Viro path_put(&path); 29117efa372SWendy Cheng return error; 29217efa372SWendy Cheng } 29317efa372SWendy Cheng 294262a0982SChuck Lever /** 295262a0982SChuck Lever * write_filehandle - Get a variable-length NFS file handle by path 296262a0982SChuck Lever * 297262a0982SChuck Lever * On input, the buffer contains a '\n'-terminated C string comprised of 298262a0982SChuck Lever * three alphanumeric words separated by whitespace. The string may 299262a0982SChuck Lever * contain escape sequences. 300262a0982SChuck Lever * 301262a0982SChuck Lever * Input: 302262a0982SChuck Lever * buf: 303262a0982SChuck Lever * domain: client domain name 304262a0982SChuck Lever * path: export pathname 305262a0982SChuck Lever * maxsize: numeric maximum size of 306262a0982SChuck Lever * @buf 307262a0982SChuck Lever * size: length of C string in @buf 308262a0982SChuck Lever * Output: 309262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 310262a0982SChuck Lever * string containing a ASCII hex text version 311262a0982SChuck Lever * of the NFS file handle; 312262a0982SChuck Lever * return code is the size in bytes of the string 313262a0982SChuck Lever * On error: return code is negative errno value 314262a0982SChuck Lever */ 3151da177e4SLinus Torvalds static ssize_t write_filehandle(struct file *file, char *buf, size_t size) 3161da177e4SLinus Torvalds { 3171da177e4SLinus Torvalds char *dname, *path; 318246d95baSAndrew Morton int uninitialized_var(maxsize); 3191da177e4SLinus Torvalds char *mesg = buf; 3201da177e4SLinus Torvalds int len; 3211da177e4SLinus Torvalds struct auth_domain *dom; 3221da177e4SLinus Torvalds struct knfsd_fh fh; 3231da177e4SLinus Torvalds 32487d26ea7SJ. Bruce Fields if (size == 0) 32587d26ea7SJ. Bruce Fields return -EINVAL; 32687d26ea7SJ. Bruce Fields 3271da177e4SLinus Torvalds if (buf[size-1] != '\n') 3281da177e4SLinus Torvalds return -EINVAL; 3291da177e4SLinus Torvalds buf[size-1] = 0; 3301da177e4SLinus Torvalds 3311da177e4SLinus Torvalds dname = mesg; 3321da177e4SLinus Torvalds len = qword_get(&mesg, dname, size); 33354224f04SChuck Lever if (len <= 0) 33454224f04SChuck Lever return -EINVAL; 3351da177e4SLinus Torvalds 3361da177e4SLinus Torvalds path = dname+len+1; 3371da177e4SLinus Torvalds len = qword_get(&mesg, path, size); 33854224f04SChuck Lever if (len <= 0) 33954224f04SChuck Lever return -EINVAL; 3401da177e4SLinus Torvalds 3411da177e4SLinus Torvalds len = get_int(&mesg, &maxsize); 3421da177e4SLinus Torvalds if (len) 3431da177e4SLinus Torvalds return len; 3441da177e4SLinus Torvalds 3451da177e4SLinus Torvalds if (maxsize < NFS_FHSIZE) 3461da177e4SLinus Torvalds return -EINVAL; 3471da177e4SLinus Torvalds if (maxsize > NFS3_FHSIZE) 3481da177e4SLinus Torvalds maxsize = NFS3_FHSIZE; 3491da177e4SLinus Torvalds 3501da177e4SLinus Torvalds if (qword_get(&mesg, mesg, size)>0) 3511da177e4SLinus Torvalds return -EINVAL; 3521da177e4SLinus Torvalds 3531da177e4SLinus Torvalds /* we have all the words, they are in buf.. */ 3541da177e4SLinus Torvalds dom = unix_domain_find(dname); 3551da177e4SLinus Torvalds if (!dom) 3561da177e4SLinus Torvalds return -ENOMEM; 3571da177e4SLinus Torvalds 358b3853e0eSStanislav Kinsbursky len = exp_rootfh(&init_net, dom, path, &fh, maxsize); 3591da177e4SLinus Torvalds auth_domain_put(dom); 3601da177e4SLinus Torvalds if (len) 3611da177e4SLinus Torvalds return len; 3621da177e4SLinus Torvalds 36354224f04SChuck Lever mesg = buf; 36454224f04SChuck Lever len = SIMPLE_TRANSACTION_LIMIT; 3651da177e4SLinus Torvalds qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size); 3661da177e4SLinus Torvalds mesg[-1] = '\n'; 3671da177e4SLinus Torvalds return mesg - buf; 3681da177e4SLinus Torvalds } 3691da177e4SLinus Torvalds 370262a0982SChuck Lever /** 371262a0982SChuck Lever * write_threads - Start NFSD, or report the current number of running threads 372262a0982SChuck Lever * 373262a0982SChuck Lever * Input: 374262a0982SChuck Lever * buf: ignored 375262a0982SChuck Lever * size: zero 376262a0982SChuck Lever * Output: 377262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 378262a0982SChuck Lever * string numeric value representing the number of 379262a0982SChuck Lever * running NFSD threads; 380262a0982SChuck Lever * return code is the size in bytes of the string 381262a0982SChuck Lever * On error: return code is zero 382262a0982SChuck Lever * 383262a0982SChuck Lever * OR 384262a0982SChuck Lever * 385262a0982SChuck Lever * Input: 386262a0982SChuck Lever * buf: C string containing an unsigned 387262a0982SChuck Lever * integer value representing the 388262a0982SChuck Lever * number of NFSD threads to start 389262a0982SChuck Lever * size: non-zero length of C string in @buf 390262a0982SChuck Lever * Output: 391262a0982SChuck Lever * On success: NFS service is started; 392262a0982SChuck Lever * passed-in buffer filled with '\n'-terminated C 393262a0982SChuck Lever * string numeric value representing the number of 394262a0982SChuck Lever * running NFSD threads; 395262a0982SChuck Lever * return code is the size in bytes of the string 396262a0982SChuck Lever * On error: return code is zero or a negative errno value 397262a0982SChuck Lever */ 3981da177e4SLinus Torvalds static ssize_t write_threads(struct file *file, char *buf, size_t size) 3991da177e4SLinus Torvalds { 4001da177e4SLinus Torvalds char *mesg = buf; 4011da177e4SLinus Torvalds int rv; 4021da177e4SLinus Torvalds if (size > 0) { 4031da177e4SLinus Torvalds int newthreads; 4041da177e4SLinus Torvalds rv = get_int(&mesg, &newthreads); 4051da177e4SLinus Torvalds if (rv) 4061da177e4SLinus Torvalds return rv; 4071da177e4SLinus Torvalds if (newthreads < 0) 4081da177e4SLinus Torvalds return -EINVAL; 4099e074856SChuck Lever rv = nfsd_svc(NFS_PORT, newthreads); 41082e12fe9SNeilBrown if (rv < 0) 4111da177e4SLinus Torvalds return rv; 41282e12fe9SNeilBrown } else 41382e12fe9SNeilBrown rv = nfsd_nrthreads(); 414e06b6405SChuck Lever 41582e12fe9SNeilBrown return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv); 4161da177e4SLinus Torvalds } 4171da177e4SLinus Torvalds 418262a0982SChuck Lever /** 419262a0982SChuck Lever * write_pool_threads - Set or report the current number of threads per pool 420262a0982SChuck Lever * 421262a0982SChuck Lever * Input: 422262a0982SChuck Lever * buf: ignored 423262a0982SChuck Lever * size: zero 424262a0982SChuck Lever * 425262a0982SChuck Lever * OR 426262a0982SChuck Lever * 427262a0982SChuck Lever * Input: 428262a0982SChuck Lever * buf: C string containing whitespace- 429262a0982SChuck Lever * separated unsigned integer values 430262a0982SChuck Lever * representing the number of NFSD 431262a0982SChuck Lever * threads to start in each pool 432262a0982SChuck Lever * size: non-zero length of C string in @buf 433262a0982SChuck Lever * Output: 434262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 435262a0982SChuck Lever * string containing integer values representing the 436262a0982SChuck Lever * number of NFSD threads in each pool; 437262a0982SChuck Lever * return code is the size in bytes of the string 438262a0982SChuck Lever * On error: return code is zero or a negative errno value 439262a0982SChuck Lever */ 440eed2965aSGreg Banks static ssize_t write_pool_threads(struct file *file, char *buf, size_t size) 441eed2965aSGreg Banks { 442eed2965aSGreg Banks /* if size > 0, look for an array of number of threads per node 443eed2965aSGreg Banks * and apply them then write out number of threads per node as reply 444eed2965aSGreg Banks */ 445eed2965aSGreg Banks char *mesg = buf; 446eed2965aSGreg Banks int i; 447eed2965aSGreg Banks int rv; 448eed2965aSGreg Banks int len; 449bedbdd8bSNeil Brown int npools; 450eed2965aSGreg Banks int *nthreads; 451eed2965aSGreg Banks 452bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 453bedbdd8bSNeil Brown npools = nfsd_nrpools(); 454eed2965aSGreg Banks if (npools == 0) { 455eed2965aSGreg Banks /* 456eed2965aSGreg Banks * NFS is shut down. The admin can start it by 457eed2965aSGreg Banks * writing to the threads file but NOT the pool_threads 458eed2965aSGreg Banks * file, sorry. Report zero threads. 459eed2965aSGreg Banks */ 460bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 461eed2965aSGreg Banks strcpy(buf, "0\n"); 462eed2965aSGreg Banks return strlen(buf); 463eed2965aSGreg Banks } 464eed2965aSGreg Banks 465eed2965aSGreg Banks nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL); 466bedbdd8bSNeil Brown rv = -ENOMEM; 467eed2965aSGreg Banks if (nthreads == NULL) 468bedbdd8bSNeil Brown goto out_free; 469eed2965aSGreg Banks 470eed2965aSGreg Banks if (size > 0) { 471eed2965aSGreg Banks for (i = 0; i < npools; i++) { 472eed2965aSGreg Banks rv = get_int(&mesg, &nthreads[i]); 473eed2965aSGreg Banks if (rv == -ENOENT) 474eed2965aSGreg Banks break; /* fewer numbers than pools */ 475eed2965aSGreg Banks if (rv) 476eed2965aSGreg Banks goto out_free; /* syntax error */ 477eed2965aSGreg Banks rv = -EINVAL; 478eed2965aSGreg Banks if (nthreads[i] < 0) 479eed2965aSGreg Banks goto out_free; 480eed2965aSGreg Banks } 481eed2965aSGreg Banks rv = nfsd_set_nrthreads(i, nthreads); 482eed2965aSGreg Banks if (rv) 483eed2965aSGreg Banks goto out_free; 484eed2965aSGreg Banks } 485eed2965aSGreg Banks 486eed2965aSGreg Banks rv = nfsd_get_nrthreads(npools, nthreads); 487eed2965aSGreg Banks if (rv) 488eed2965aSGreg Banks goto out_free; 489eed2965aSGreg Banks 490eed2965aSGreg Banks mesg = buf; 491eed2965aSGreg Banks size = SIMPLE_TRANSACTION_LIMIT; 492eed2965aSGreg Banks for (i = 0; i < npools && size > 0; i++) { 493eed2965aSGreg Banks snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' ')); 494eed2965aSGreg Banks len = strlen(mesg); 495eed2965aSGreg Banks size -= len; 496eed2965aSGreg Banks mesg += len; 497eed2965aSGreg Banks } 498413d63d7SJ. Bruce Fields rv = mesg - buf; 499eed2965aSGreg Banks out_free: 500eed2965aSGreg Banks kfree(nthreads); 501bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 502eed2965aSGreg Banks return rv; 503eed2965aSGreg Banks } 504eed2965aSGreg Banks 5053dd98a3bSJeff Layton static ssize_t __write_versions(struct file *file, char *buf, size_t size) 50670c3b76cSNeilBrown { 50770c3b76cSNeilBrown char *mesg = buf; 5088daf220aSBenny Halevy char *vers, *minorp, sign; 509261758b5SChuck Lever int len, num, remaining; 5108daf220aSBenny Halevy unsigned minor; 51170c3b76cSNeilBrown ssize_t tlen = 0; 51270c3b76cSNeilBrown char *sep; 51370c3b76cSNeilBrown 51470c3b76cSNeilBrown if (size>0) { 51570c3b76cSNeilBrown if (nfsd_serv) 5166658d3a7SNeilBrown /* Cannot change versions without updating 5176658d3a7SNeilBrown * nfsd_serv->sv_xdrsize, and reallocing 5186658d3a7SNeilBrown * rq_argp and rq_resp 5196658d3a7SNeilBrown */ 52070c3b76cSNeilBrown return -EBUSY; 52170c3b76cSNeilBrown if (buf[size-1] != '\n') 52270c3b76cSNeilBrown return -EINVAL; 52370c3b76cSNeilBrown buf[size-1] = 0; 52470c3b76cSNeilBrown 52570c3b76cSNeilBrown vers = mesg; 52670c3b76cSNeilBrown len = qword_get(&mesg, vers, size); 52770c3b76cSNeilBrown if (len <= 0) return -EINVAL; 52870c3b76cSNeilBrown do { 52970c3b76cSNeilBrown sign = *vers; 53070c3b76cSNeilBrown if (sign == '+' || sign == '-') 5318daf220aSBenny Halevy num = simple_strtol((vers+1), &minorp, 0); 53270c3b76cSNeilBrown else 5338daf220aSBenny Halevy num = simple_strtol(vers, &minorp, 0); 5348daf220aSBenny Halevy if (*minorp == '.') { 5358daf220aSBenny Halevy if (num < 4) 5368daf220aSBenny Halevy return -EINVAL; 5378daf220aSBenny Halevy minor = simple_strtoul(minorp+1, NULL, 0); 5388daf220aSBenny Halevy if (minor == 0) 5398daf220aSBenny Halevy return -EINVAL; 5408daf220aSBenny Halevy if (nfsd_minorversion(minor, sign == '-' ? 5418daf220aSBenny Halevy NFSD_CLEAR : NFSD_SET) < 0) 5428daf220aSBenny Halevy return -EINVAL; 5438daf220aSBenny Halevy goto next; 5448daf220aSBenny Halevy } 54570c3b76cSNeilBrown switch(num) { 54670c3b76cSNeilBrown case 2: 54770c3b76cSNeilBrown case 3: 54870c3b76cSNeilBrown case 4: 5496658d3a7SNeilBrown nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET); 55070c3b76cSNeilBrown break; 55170c3b76cSNeilBrown default: 55270c3b76cSNeilBrown return -EINVAL; 55370c3b76cSNeilBrown } 5548daf220aSBenny Halevy next: 55570c3b76cSNeilBrown vers += len + 1; 55670c3b76cSNeilBrown } while ((len = qword_get(&mesg, vers, size)) > 0); 55770c3b76cSNeilBrown /* If all get turned off, turn them back on, as 55870c3b76cSNeilBrown * having no versions is BAD 55970c3b76cSNeilBrown */ 5606658d3a7SNeilBrown nfsd_reset_versions(); 56170c3b76cSNeilBrown } 562261758b5SChuck Lever 56370c3b76cSNeilBrown /* Now write current state into reply buffer */ 56470c3b76cSNeilBrown len = 0; 56570c3b76cSNeilBrown sep = ""; 566261758b5SChuck Lever remaining = SIMPLE_TRANSACTION_LIMIT; 56770c3b76cSNeilBrown for (num=2 ; num <= 4 ; num++) 5686658d3a7SNeilBrown if (nfsd_vers(num, NFSD_AVAIL)) { 569261758b5SChuck Lever len = snprintf(buf, remaining, "%s%c%d", sep, 5706658d3a7SNeilBrown nfsd_vers(num, NFSD_TEST)?'+':'-', 57170c3b76cSNeilBrown num); 57270c3b76cSNeilBrown sep = " "; 573261758b5SChuck Lever 574261758b5SChuck Lever if (len > remaining) 575261758b5SChuck Lever break; 576261758b5SChuck Lever remaining -= len; 577261758b5SChuck Lever buf += len; 578261758b5SChuck Lever tlen += len; 57970c3b76cSNeilBrown } 5808daf220aSBenny Halevy if (nfsd_vers(4, NFSD_AVAIL)) 581261758b5SChuck Lever for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; 582261758b5SChuck Lever minor++) { 583261758b5SChuck Lever len = snprintf(buf, remaining, " %c4.%u", 5848daf220aSBenny Halevy (nfsd_vers(4, NFSD_TEST) && 5858daf220aSBenny Halevy nfsd_minorversion(minor, NFSD_TEST)) ? 5868daf220aSBenny Halevy '+' : '-', 5878daf220aSBenny Halevy minor); 588261758b5SChuck Lever 589261758b5SChuck Lever if (len > remaining) 590261758b5SChuck Lever break; 591261758b5SChuck Lever remaining -= len; 592261758b5SChuck Lever buf += len; 593261758b5SChuck Lever tlen += len; 594261758b5SChuck Lever } 595261758b5SChuck Lever 596261758b5SChuck Lever len = snprintf(buf, remaining, "\n"); 597261758b5SChuck Lever if (len > remaining) 598261758b5SChuck Lever return -EINVAL; 599261758b5SChuck Lever return tlen + len; 60070c3b76cSNeilBrown } 60170c3b76cSNeilBrown 602262a0982SChuck Lever /** 603262a0982SChuck Lever * write_versions - Set or report the available NFS protocol versions 604262a0982SChuck Lever * 605262a0982SChuck Lever * Input: 606262a0982SChuck Lever * buf: ignored 607262a0982SChuck Lever * size: zero 608262a0982SChuck Lever * Output: 609262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 610262a0982SChuck Lever * string containing positive or negative integer 611262a0982SChuck Lever * values representing the current status of each 612262a0982SChuck Lever * protocol version; 613262a0982SChuck Lever * return code is the size in bytes of the string 614262a0982SChuck Lever * On error: return code is zero or a negative errno value 615262a0982SChuck Lever * 616262a0982SChuck Lever * OR 617262a0982SChuck Lever * 618262a0982SChuck Lever * Input: 619262a0982SChuck Lever * buf: C string containing whitespace- 620262a0982SChuck Lever * separated positive or negative 621262a0982SChuck Lever * integer values representing NFS 622262a0982SChuck Lever * protocol versions to enable ("+n") 623262a0982SChuck Lever * or disable ("-n") 624262a0982SChuck Lever * size: non-zero length of C string in @buf 625262a0982SChuck Lever * Output: 626262a0982SChuck Lever * On success: status of zero or more protocol versions has 627262a0982SChuck Lever * been updated; passed-in buffer filled with 628262a0982SChuck Lever * '\n'-terminated C string containing positive 629262a0982SChuck Lever * or negative integer values representing the 630262a0982SChuck Lever * current status of each protocol version; 631262a0982SChuck Lever * return code is the size in bytes of the string 632262a0982SChuck Lever * On error: return code is zero or a negative errno value 633262a0982SChuck Lever */ 6343dd98a3bSJeff Layton static ssize_t write_versions(struct file *file, char *buf, size_t size) 6353dd98a3bSJeff Layton { 6363dd98a3bSJeff Layton ssize_t rv; 6373dd98a3bSJeff Layton 6383dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 6393dd98a3bSJeff Layton rv = __write_versions(file, buf, size); 6403dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 6413dd98a3bSJeff Layton return rv; 6423dd98a3bSJeff Layton } 6433dd98a3bSJeff Layton 6444cd5dc75SChuck Lever /* 6450a5372d8SChuck Lever * Zero-length write. Return a list of NFSD's current listener 6460a5372d8SChuck Lever * transports. 6470a5372d8SChuck Lever */ 6480a5372d8SChuck Lever static ssize_t __write_ports_names(char *buf) 6490a5372d8SChuck Lever { 6500a5372d8SChuck Lever if (nfsd_serv == NULL) 6510a5372d8SChuck Lever return 0; 652335c54bdSChuck Lever return svc_xprt_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT); 6530a5372d8SChuck Lever } 6540a5372d8SChuck Lever 6550a5372d8SChuck Lever /* 6560b7c2f6fSChuck Lever * A single 'fd' number was written, in which case it must be for 6570b7c2f6fSChuck Lever * a socket of a supported family/protocol, and we use it as an 6580b7c2f6fSChuck Lever * nfsd listener. 6590b7c2f6fSChuck Lever */ 6600b7c2f6fSChuck Lever static ssize_t __write_ports_addfd(char *buf) 6610b7c2f6fSChuck Lever { 6620b7c2f6fSChuck Lever char *mesg = buf; 6630b7c2f6fSChuck Lever int fd, err; 6640b7c2f6fSChuck Lever 6650b7c2f6fSChuck Lever err = get_int(&mesg, &fd); 6660b7c2f6fSChuck Lever if (err != 0 || fd < 0) 6670b7c2f6fSChuck Lever return -EINVAL; 6680b7c2f6fSChuck Lever 6690b7c2f6fSChuck Lever err = nfsd_create_serv(); 6700b7c2f6fSChuck Lever if (err != 0) 6710b7c2f6fSChuck Lever return err; 6720b7c2f6fSChuck Lever 673bfba9ab4SChuck Lever err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT); 67478a8d7c8SJeff Layton if (err < 0) { 67578a8d7c8SJeff Layton svc_destroy(nfsd_serv); 67678a8d7c8SJeff Layton return err; 67778a8d7c8SJeff Layton } 678ea068badSChuck Lever 6790b7c2f6fSChuck Lever /* Decrease the count, but don't shut down the service */ 6800b7c2f6fSChuck Lever nfsd_serv->sv_nrthreads--; 681ea068badSChuck Lever return err; 6820b7c2f6fSChuck Lever } 6830b7c2f6fSChuck Lever 6840b7c2f6fSChuck Lever /* 68582d56591SChuck Lever * A '-' followed by the 'name' of a socket means we close the socket. 68682d56591SChuck Lever */ 68782d56591SChuck Lever static ssize_t __write_ports_delfd(char *buf) 68882d56591SChuck Lever { 68982d56591SChuck Lever char *toclose; 69082d56591SChuck Lever int len = 0; 69182d56591SChuck Lever 69282d56591SChuck Lever toclose = kstrdup(buf + 1, GFP_KERNEL); 69382d56591SChuck Lever if (toclose == NULL) 69482d56591SChuck Lever return -ENOMEM; 69582d56591SChuck Lever 69682d56591SChuck Lever if (nfsd_serv != NULL) 6978435d34dSChuck Lever len = svc_sock_names(nfsd_serv, buf, 6988435d34dSChuck Lever SIMPLE_TRANSACTION_LIMIT, toclose); 69982d56591SChuck Lever kfree(toclose); 70082d56591SChuck Lever return len; 70182d56591SChuck Lever } 70282d56591SChuck Lever 70382d56591SChuck Lever /* 7044eb68c26SChuck Lever * A transport listener is added by writing it's transport name and 7054eb68c26SChuck Lever * a port number. 7064eb68c26SChuck Lever */ 7074eb68c26SChuck Lever static ssize_t __write_ports_addxprt(char *buf) 7084eb68c26SChuck Lever { 7094eb68c26SChuck Lever char transport[16]; 71037498292SChuck Lever struct svc_xprt *xprt; 7114eb68c26SChuck Lever int port, err; 7124eb68c26SChuck Lever 7134eb68c26SChuck Lever if (sscanf(buf, "%15s %4u", transport, &port) != 2) 7144eb68c26SChuck Lever return -EINVAL; 7154eb68c26SChuck Lever 7164be929beSAlexey Dobriyan if (port < 1 || port > USHRT_MAX) 7174eb68c26SChuck Lever return -EINVAL; 7184eb68c26SChuck Lever 7194eb68c26SChuck Lever err = nfsd_create_serv(); 7204eb68c26SChuck Lever if (err != 0) 7214eb68c26SChuck Lever return err; 7224eb68c26SChuck Lever 723fc5d00b0SPavel Emelyanov err = svc_create_xprt(nfsd_serv, transport, &init_net, 7244eb68c26SChuck Lever PF_INET, port, SVC_SOCK_ANONYMOUS); 72568717908SChuck Lever if (err < 0) 72637498292SChuck Lever goto out_err; 72737498292SChuck Lever 728fc5d00b0SPavel Emelyanov err = svc_create_xprt(nfsd_serv, transport, &init_net, 72937498292SChuck Lever PF_INET6, port, SVC_SOCK_ANONYMOUS); 73037498292SChuck Lever if (err < 0 && err != -EAFNOSUPPORT) 73137498292SChuck Lever goto out_close; 7320cd14a06SJeff Layton 7330cd14a06SJeff Layton /* Decrease the count, but don't shut down the service */ 7340cd14a06SJeff Layton nfsd_serv->sv_nrthreads--; 7354eb68c26SChuck Lever return 0; 73637498292SChuck Lever out_close: 7374cb54ca2SStanislav Kinsbursky xprt = svc_find_xprt(nfsd_serv, transport, &init_net, PF_INET, port); 73837498292SChuck Lever if (xprt != NULL) { 73937498292SChuck Lever svc_close_xprt(xprt); 74037498292SChuck Lever svc_xprt_put(xprt); 74137498292SChuck Lever } 74237498292SChuck Lever out_err: 7430cd14a06SJeff Layton svc_destroy(nfsd_serv); 74437498292SChuck Lever return err; 7454eb68c26SChuck Lever } 7464eb68c26SChuck Lever 7474eb68c26SChuck Lever /* 7484cd5dc75SChuck Lever * A transport listener is removed by writing a "-", it's transport 7494cd5dc75SChuck Lever * name, and it's port number. 7504cd5dc75SChuck Lever */ 7514cd5dc75SChuck Lever static ssize_t __write_ports_delxprt(char *buf) 7524cd5dc75SChuck Lever { 7534cd5dc75SChuck Lever struct svc_xprt *xprt; 7544cd5dc75SChuck Lever char transport[16]; 7554cd5dc75SChuck Lever int port; 7564cd5dc75SChuck Lever 7574cd5dc75SChuck Lever if (sscanf(&buf[1], "%15s %4u", transport, &port) != 2) 7584cd5dc75SChuck Lever return -EINVAL; 7594cd5dc75SChuck Lever 7604be929beSAlexey Dobriyan if (port < 1 || port > USHRT_MAX || nfsd_serv == NULL) 7614cd5dc75SChuck Lever return -EINVAL; 7624cd5dc75SChuck Lever 7634cb54ca2SStanislav Kinsbursky xprt = svc_find_xprt(nfsd_serv, transport, &init_net, AF_UNSPEC, port); 7644cd5dc75SChuck Lever if (xprt == NULL) 7654cd5dc75SChuck Lever return -ENOTCONN; 7664cd5dc75SChuck Lever 7674cd5dc75SChuck Lever svc_close_xprt(xprt); 7684cd5dc75SChuck Lever svc_xprt_put(xprt); 7694cd5dc75SChuck Lever return 0; 7704cd5dc75SChuck Lever } 7714cd5dc75SChuck Lever 772bedbdd8bSNeil Brown static ssize_t __write_ports(struct file *file, char *buf, size_t size) 77380212d59SNeilBrown { 7740a5372d8SChuck Lever if (size == 0) 7750a5372d8SChuck Lever return __write_ports_names(buf); 7760b7c2f6fSChuck Lever 7770b7c2f6fSChuck Lever if (isdigit(buf[0])) 7780b7c2f6fSChuck Lever return __write_ports_addfd(buf); 77982d56591SChuck Lever 78082d56591SChuck Lever if (buf[0] == '-' && isdigit(buf[1])) 78182d56591SChuck Lever return __write_ports_delfd(buf); 7824eb68c26SChuck Lever 7834eb68c26SChuck Lever if (isalpha(buf[0])) 7844eb68c26SChuck Lever return __write_ports_addxprt(buf); 7854cd5dc75SChuck Lever 7864cd5dc75SChuck Lever if (buf[0] == '-' && isalpha(buf[1])) 7874cd5dc75SChuck Lever return __write_ports_delxprt(buf); 7884cd5dc75SChuck Lever 789b41b66d6SNeilBrown return -EINVAL; 790b41b66d6SNeilBrown } 79180212d59SNeilBrown 792262a0982SChuck Lever /** 793262a0982SChuck Lever * write_ports - Pass a socket file descriptor or transport name to listen on 794262a0982SChuck Lever * 795262a0982SChuck Lever * Input: 796262a0982SChuck Lever * buf: ignored 797262a0982SChuck Lever * size: zero 798262a0982SChuck Lever * Output: 799262a0982SChuck Lever * On success: passed-in buffer filled with a '\n'-terminated C 800262a0982SChuck Lever * string containing a whitespace-separated list of 801262a0982SChuck Lever * named NFSD listeners; 802262a0982SChuck Lever * return code is the size in bytes of the string 803262a0982SChuck Lever * On error: return code is zero or a negative errno value 804262a0982SChuck Lever * 805262a0982SChuck Lever * OR 806262a0982SChuck Lever * 807262a0982SChuck Lever * Input: 808262a0982SChuck Lever * buf: C string containing an unsigned 809262a0982SChuck Lever * integer value representing a bound 810262a0982SChuck Lever * but unconnected socket that is to be 811c71206a7SChuck Lever * used as an NFSD listener; listen(3) 812c71206a7SChuck Lever * must be called for a SOCK_STREAM 813c71206a7SChuck Lever * socket, otherwise it is ignored 814262a0982SChuck Lever * size: non-zero length of C string in @buf 815262a0982SChuck Lever * Output: 816262a0982SChuck Lever * On success: NFS service is started; 817262a0982SChuck Lever * passed-in buffer filled with a '\n'-terminated C 818262a0982SChuck Lever * string containing a unique alphanumeric name of 819262a0982SChuck Lever * the listener; 820262a0982SChuck Lever * return code is the size in bytes of the string 821262a0982SChuck Lever * On error: return code is a negative errno value 822262a0982SChuck Lever * 823262a0982SChuck Lever * OR 824262a0982SChuck Lever * 825262a0982SChuck Lever * Input: 826262a0982SChuck Lever * buf: C string containing a "-" followed 827262a0982SChuck Lever * by an integer value representing a 828262a0982SChuck Lever * previously passed in socket file 829262a0982SChuck Lever * descriptor 830262a0982SChuck Lever * size: non-zero length of C string in @buf 831262a0982SChuck Lever * Output: 832262a0982SChuck Lever * On success: NFS service no longer listens on that socket; 833262a0982SChuck Lever * passed-in buffer filled with a '\n'-terminated C 834262a0982SChuck Lever * string containing a unique name of the listener; 835262a0982SChuck Lever * return code is the size in bytes of the string 836262a0982SChuck Lever * On error: return code is a negative errno value 837262a0982SChuck Lever * 838262a0982SChuck Lever * OR 839262a0982SChuck Lever * 840262a0982SChuck Lever * Input: 841262a0982SChuck Lever * buf: C string containing a transport 842262a0982SChuck Lever * name and an unsigned integer value 843262a0982SChuck Lever * representing the port to listen on, 844262a0982SChuck Lever * separated by whitespace 845262a0982SChuck Lever * size: non-zero length of C string in @buf 846262a0982SChuck Lever * Output: 847262a0982SChuck Lever * On success: returns zero; NFS service is started 848262a0982SChuck Lever * On error: return code is a negative errno value 849262a0982SChuck Lever * 850262a0982SChuck Lever * OR 851262a0982SChuck Lever * 852262a0982SChuck Lever * Input: 853262a0982SChuck Lever * buf: C string containing a "-" followed 854262a0982SChuck Lever * by a transport name and an unsigned 855262a0982SChuck Lever * integer value representing the port 856262a0982SChuck Lever * to listen on, separated by whitespace 857262a0982SChuck Lever * size: non-zero length of C string in @buf 858262a0982SChuck Lever * Output: 859262a0982SChuck Lever * On success: returns zero; NFS service no longer listens 860262a0982SChuck Lever * on that transport 861262a0982SChuck Lever * On error: return code is a negative errno value 862262a0982SChuck Lever */ 863bedbdd8bSNeil Brown static ssize_t write_ports(struct file *file, char *buf, size_t size) 864bedbdd8bSNeil Brown { 865bedbdd8bSNeil Brown ssize_t rv; 8663dd98a3bSJeff Layton 867bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 868bedbdd8bSNeil Brown rv = __write_ports(file, buf, size); 869bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 870bedbdd8bSNeil Brown return rv; 871bedbdd8bSNeil Brown } 872bedbdd8bSNeil Brown 873bedbdd8bSNeil Brown 874596bbe53SNeilBrown int nfsd_max_blksize; 875596bbe53SNeilBrown 876262a0982SChuck Lever /** 877262a0982SChuck Lever * write_maxblksize - Set or report the current NFS blksize 878262a0982SChuck Lever * 879262a0982SChuck Lever * Input: 880262a0982SChuck Lever * buf: ignored 881262a0982SChuck Lever * size: zero 882262a0982SChuck Lever * 883262a0982SChuck Lever * OR 884262a0982SChuck Lever * 885262a0982SChuck Lever * Input: 886262a0982SChuck Lever * buf: C string containing an unsigned 887262a0982SChuck Lever * integer value representing the new 888262a0982SChuck Lever * NFS blksize 889262a0982SChuck Lever * size: non-zero length of C string in @buf 890262a0982SChuck Lever * Output: 891262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C string 892262a0982SChuck Lever * containing numeric value of the current NFS blksize 893262a0982SChuck Lever * setting; 894262a0982SChuck Lever * return code is the size in bytes of the string 895262a0982SChuck Lever * On error: return code is zero or a negative errno value 896262a0982SChuck Lever */ 897596bbe53SNeilBrown static ssize_t write_maxblksize(struct file *file, char *buf, size_t size) 898596bbe53SNeilBrown { 899596bbe53SNeilBrown char *mesg = buf; 900596bbe53SNeilBrown if (size > 0) { 901596bbe53SNeilBrown int bsize; 902596bbe53SNeilBrown int rv = get_int(&mesg, &bsize); 903596bbe53SNeilBrown if (rv) 904596bbe53SNeilBrown return rv; 905596bbe53SNeilBrown /* force bsize into allowed range and 906596bbe53SNeilBrown * required alignment. 907596bbe53SNeilBrown */ 908596bbe53SNeilBrown if (bsize < 1024) 909596bbe53SNeilBrown bsize = 1024; 910596bbe53SNeilBrown if (bsize > NFSSVC_MAXBLKSIZE) 911596bbe53SNeilBrown bsize = NFSSVC_MAXBLKSIZE; 912596bbe53SNeilBrown bsize &= ~(1024-1); 913bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 9147fa53cc8SJ. Bruce Fields if (nfsd_serv) { 915bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 916596bbe53SNeilBrown return -EBUSY; 917596bbe53SNeilBrown } 918596bbe53SNeilBrown nfsd_max_blksize = bsize; 919bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 920596bbe53SNeilBrown } 921e06b6405SChuck Lever 922e06b6405SChuck Lever return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", 923e06b6405SChuck Lever nfsd_max_blksize); 924596bbe53SNeilBrown } 925596bbe53SNeilBrown 92670c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 927f0135740SJ. Bruce Fields static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time) 9281da177e4SLinus Torvalds { 9291da177e4SLinus Torvalds char *mesg = buf; 930f0135740SJ. Bruce Fields int rv, i; 9311da177e4SLinus Torvalds 9321da177e4SLinus Torvalds if (size > 0) { 9333dd98a3bSJeff Layton if (nfsd_serv) 9343dd98a3bSJeff Layton return -EBUSY; 935f0135740SJ. Bruce Fields rv = get_int(&mesg, &i); 9361da177e4SLinus Torvalds if (rv) 9371da177e4SLinus Torvalds return rv; 938e7b184f1SJ. Bruce Fields /* 939e7b184f1SJ. Bruce Fields * Some sanity checking. We don't have a reason for 940e7b184f1SJ. Bruce Fields * these particular numbers, but problems with the 941e7b184f1SJ. Bruce Fields * extremes are: 942e7b184f1SJ. Bruce Fields * - Too short: the briefest network outage may 943e7b184f1SJ. Bruce Fields * cause clients to lose all their locks. Also, 944e7b184f1SJ. Bruce Fields * the frequent polling may be wasteful. 945e7b184f1SJ. Bruce Fields * - Too long: do you really want reboot recovery 946e7b184f1SJ. Bruce Fields * to take more than an hour? Or to make other 947e7b184f1SJ. Bruce Fields * clients wait an hour before being able to 948e7b184f1SJ. Bruce Fields * revoke a dead client's locks? 949e7b184f1SJ. Bruce Fields */ 950f0135740SJ. Bruce Fields if (i < 10 || i > 3600) 9511da177e4SLinus Torvalds return -EINVAL; 952f0135740SJ. Bruce Fields *time = i; 9531da177e4SLinus Torvalds } 954e06b6405SChuck Lever 955f0135740SJ. Bruce Fields return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time); 956f0135740SJ. Bruce Fields } 957f0135740SJ. Bruce Fields 958f0135740SJ. Bruce Fields static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time) 959f0135740SJ. Bruce Fields { 960f0135740SJ. Bruce Fields ssize_t rv; 961f0135740SJ. Bruce Fields 962f0135740SJ. Bruce Fields mutex_lock(&nfsd_mutex); 963f0135740SJ. Bruce Fields rv = __nfsd4_write_time(file, buf, size, time); 964f0135740SJ. Bruce Fields mutex_unlock(&nfsd_mutex); 965f0135740SJ. Bruce Fields return rv; 9661da177e4SLinus Torvalds } 9671da177e4SLinus Torvalds 968262a0982SChuck Lever /** 969262a0982SChuck Lever * write_leasetime - Set or report the current NFSv4 lease time 970262a0982SChuck Lever * 971262a0982SChuck Lever * Input: 972262a0982SChuck Lever * buf: ignored 973262a0982SChuck Lever * size: zero 974262a0982SChuck Lever * 975262a0982SChuck Lever * OR 976262a0982SChuck Lever * 977262a0982SChuck Lever * Input: 978262a0982SChuck Lever * buf: C string containing an unsigned 979262a0982SChuck Lever * integer value representing the new 980262a0982SChuck Lever * NFSv4 lease expiry time 981262a0982SChuck Lever * size: non-zero length of C string in @buf 982262a0982SChuck Lever * Output: 983262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 984262a0982SChuck Lever * string containing unsigned integer value of the 985262a0982SChuck Lever * current lease expiry time; 986262a0982SChuck Lever * return code is the size in bytes of the string 987262a0982SChuck Lever * On error: return code is zero or a negative errno value 988262a0982SChuck Lever */ 9893dd98a3bSJeff Layton static ssize_t write_leasetime(struct file *file, char *buf, size_t size) 9903dd98a3bSJeff Layton { 991f0135740SJ. Bruce Fields return nfsd4_write_time(file, buf, size, &nfsd4_lease); 9923dd98a3bSJeff Layton } 9933dd98a3bSJeff Layton 994efc4bb4fSJ. Bruce Fields /** 995efc4bb4fSJ. Bruce Fields * write_gracetime - Set or report current NFSv4 grace period time 996efc4bb4fSJ. Bruce Fields * 997efc4bb4fSJ. Bruce Fields * As above, but sets the time of the NFSv4 grace period. 998efc4bb4fSJ. Bruce Fields * 999efc4bb4fSJ. Bruce Fields * Note this should never be set to less than the *previous* 1000efc4bb4fSJ. Bruce Fields * lease-period time, but we don't try to enforce this. (In the common 1001efc4bb4fSJ. Bruce Fields * case (a new boot), we don't know what the previous lease time was 1002efc4bb4fSJ. Bruce Fields * anyway.) 1003efc4bb4fSJ. Bruce Fields */ 1004efc4bb4fSJ. Bruce Fields static ssize_t write_gracetime(struct file *file, char *buf, size_t size) 1005efc4bb4fSJ. Bruce Fields { 1006efc4bb4fSJ. Bruce Fields return nfsd4_write_time(file, buf, size, &nfsd4_grace); 1007efc4bb4fSJ. Bruce Fields } 1008efc4bb4fSJ. Bruce Fields 10093dd98a3bSJeff Layton extern char *nfs4_recoverydir(void); 10103dd98a3bSJeff Layton 10113dd98a3bSJeff Layton static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size) 10120964a3d3SNeilBrown { 10130964a3d3SNeilBrown char *mesg = buf; 10140964a3d3SNeilBrown char *recdir; 10150964a3d3SNeilBrown int len, status; 10160964a3d3SNeilBrown 10173dd98a3bSJeff Layton if (size > 0) { 10183dd98a3bSJeff Layton if (nfsd_serv) 10193dd98a3bSJeff Layton return -EBUSY; 10203dd98a3bSJeff Layton if (size > PATH_MAX || buf[size-1] != '\n') 10210964a3d3SNeilBrown return -EINVAL; 10220964a3d3SNeilBrown buf[size-1] = 0; 10230964a3d3SNeilBrown 10240964a3d3SNeilBrown recdir = mesg; 10250964a3d3SNeilBrown len = qword_get(&mesg, recdir, size); 10260964a3d3SNeilBrown if (len <= 0) 10270964a3d3SNeilBrown return -EINVAL; 10280964a3d3SNeilBrown 10290964a3d3SNeilBrown status = nfs4_reset_recoverydir(recdir); 103069049961SAndi Kleen if (status) 103169049961SAndi Kleen return status; 10323dd98a3bSJeff Layton } 10333d72ab8fSChuck Lever 10343d72ab8fSChuck Lever return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n", 10353d72ab8fSChuck Lever nfs4_recoverydir()); 10360964a3d3SNeilBrown } 10373dd98a3bSJeff Layton 1038262a0982SChuck Lever /** 1039262a0982SChuck Lever * write_recoverydir - Set or report the pathname of the recovery directory 1040262a0982SChuck Lever * 1041262a0982SChuck Lever * Input: 1042262a0982SChuck Lever * buf: ignored 1043262a0982SChuck Lever * size: zero 1044262a0982SChuck Lever * 1045262a0982SChuck Lever * OR 1046262a0982SChuck Lever * 1047262a0982SChuck Lever * Input: 1048262a0982SChuck Lever * buf: C string containing the pathname 1049262a0982SChuck Lever * of the directory on a local file 1050262a0982SChuck Lever * system containing permanent NFSv4 1051262a0982SChuck Lever * recovery data 1052262a0982SChuck Lever * size: non-zero length of C string in @buf 1053262a0982SChuck Lever * Output: 1054262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C string 1055262a0982SChuck Lever * containing the current recovery pathname setting; 1056262a0982SChuck Lever * return code is the size in bytes of the string 1057262a0982SChuck Lever * On error: return code is zero or a negative errno value 1058262a0982SChuck Lever */ 10593dd98a3bSJeff Layton static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) 10603dd98a3bSJeff Layton { 10613dd98a3bSJeff Layton ssize_t rv; 10623dd98a3bSJeff Layton 10633dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 10643dd98a3bSJeff Layton rv = __write_recoverydir(file, buf, size); 10653dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 10663dd98a3bSJeff Layton return rv; 10673dd98a3bSJeff Layton } 10683dd98a3bSJeff Layton 106970c3b76cSNeilBrown #endif 10700964a3d3SNeilBrown 10711da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 10721da177e4SLinus Torvalds /* 10731da177e4SLinus Torvalds * populating the filesystem. 10741da177e4SLinus Torvalds */ 10751da177e4SLinus Torvalds 10761da177e4SLinus Torvalds static int nfsd_fill_super(struct super_block * sb, void * data, int silent) 10771da177e4SLinus Torvalds { 10781da177e4SLinus Torvalds static struct tree_descr nfsd_files[] = { 10791da177e4SLinus Torvalds [NFSD_List] = {"exports", &exports_operations, S_IRUGO}, 1080e8e8753fSJ. Bruce Fields [NFSD_Export_features] = {"export_features", 1081e8e8753fSJ. Bruce Fields &export_features_operations, S_IRUGO}, 10824373ea84SWendy Cheng [NFSD_FO_UnlockIP] = {"unlock_ip", 10834373ea84SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 108417efa372SWendy Cheng [NFSD_FO_UnlockFS] = {"unlock_filesystem", 108517efa372SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 10861da177e4SLinus Torvalds [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, 10871da177e4SLinus Torvalds [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, 1088eed2965aSGreg Banks [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR}, 108903cf6c9fSGreg Banks [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO}, 109070c3b76cSNeilBrown [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, 109180212d59SNeilBrown [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, 1092596bbe53SNeilBrown [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO}, 1093b084f598SJ. Bruce Fields #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) 1094b0b0c0a2SKevin Coffman [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO}, 1095b084f598SJ. Bruce Fields #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ 10961da177e4SLinus Torvalds #ifdef CONFIG_NFSD_V4 10971da177e4SLinus Torvalds [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, 1098efc4bb4fSJ. Bruce Fields [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR}, 10990964a3d3SNeilBrown [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, 11001da177e4SLinus Torvalds #endif 11011da177e4SLinus Torvalds /* last one */ {""} 11021da177e4SLinus Torvalds }; 11031da177e4SLinus Torvalds return simple_fill_super(sb, 0x6e667364, nfsd_files); 11041da177e4SLinus Torvalds } 11051da177e4SLinus Torvalds 1106fc14f2feSAl Viro static struct dentry *nfsd_mount(struct file_system_type *fs_type, 1107fc14f2feSAl Viro int flags, const char *dev_name, void *data) 11081da177e4SLinus Torvalds { 1109fc14f2feSAl Viro return mount_single(fs_type, flags, data, nfsd_fill_super); 11101da177e4SLinus Torvalds } 11111da177e4SLinus Torvalds 11121da177e4SLinus Torvalds static struct file_system_type nfsd_fs_type = { 11131da177e4SLinus Torvalds .owner = THIS_MODULE, 11141da177e4SLinus Torvalds .name = "nfsd", 1115fc14f2feSAl Viro .mount = nfsd_mount, 11161da177e4SLinus Torvalds .kill_sb = kill_litter_super, 11171da177e4SLinus Torvalds }; 11181da177e4SLinus Torvalds 1119e331f606SJ. Bruce Fields #ifdef CONFIG_PROC_FS 1120e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 1121e331f606SJ. Bruce Fields { 1122e331f606SJ. Bruce Fields struct proc_dir_entry *entry; 1123e331f606SJ. Bruce Fields 1124e331f606SJ. Bruce Fields entry = proc_mkdir("fs/nfs", NULL); 1125e331f606SJ. Bruce Fields if (!entry) 1126e331f606SJ. Bruce Fields return -ENOMEM; 11279ef2db26SDenis V. Lunev entry = proc_create("exports", 0, entry, &exports_operations); 1128e331f606SJ. Bruce Fields if (!entry) 1129e331f606SJ. Bruce Fields return -ENOMEM; 1130e331f606SJ. Bruce Fields return 0; 1131e331f606SJ. Bruce Fields } 1132e331f606SJ. Bruce Fields #else /* CONFIG_PROC_FS */ 1133e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 1134e331f606SJ. Bruce Fields { 1135e331f606SJ. Bruce Fields return 0; 1136e331f606SJ. Bruce Fields } 1137e331f606SJ. Bruce Fields #endif 1138e331f606SJ. Bruce Fields 11397ea34ac1SJeff Layton int nfsd_net_id; 11407ea34ac1SJeff Layton static struct pernet_operations nfsd_net_ops = { 11417ea34ac1SJeff Layton .id = &nfsd_net_id, 11427ea34ac1SJeff Layton .size = sizeof(struct nfsd_net), 11437ea34ac1SJeff Layton }; 11447ea34ac1SJeff Layton 11451da177e4SLinus Torvalds static int __init init_nfsd(void) 11461da177e4SLinus Torvalds { 11471da177e4SLinus Torvalds int retval; 11481da177e4SLinus Torvalds printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n"); 11491da177e4SLinus Torvalds 1150797a9d79SJeff Layton retval = register_cld_notifier(); 1151813fd320SJeff Layton if (retval) 1152813fd320SJeff Layton return retval; 11537ea34ac1SJeff Layton retval = register_pernet_subsys(&nfsd_net_ops); 11547ea34ac1SJeff Layton if (retval < 0) 1155813fd320SJeff Layton goto out_unregister_notifier; 115672083396SBryan Schumaker retval = nfsd4_init_slabs(); 1157e8ff2a84SJ. Bruce Fields if (retval) 11587ea34ac1SJeff Layton goto out_unregister_pernet; 115972083396SBryan Schumaker nfs4_state_init(); 116065178db4SBryan Schumaker retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */ 116165178db4SBryan Schumaker if (retval) 116265178db4SBryan Schumaker goto out_free_slabs; 11631da177e4SLinus Torvalds nfsd_stat_init(); /* Statistics */ 1164d5c3428bSJ. Bruce Fields retval = nfsd_reply_cache_init(); 1165d5c3428bSJ. Bruce Fields if (retval) 1166d5c3428bSJ. Bruce Fields goto out_free_stat; 1167b89109beSStanislav Kinsbursky retval = nfsd_export_init(&init_net); 1168dbf847ecSJ. Bruce Fields if (retval) 1169dbf847ecSJ. Bruce Fields goto out_free_cache; 11701da177e4SLinus Torvalds nfsd_lockd_init(); /* lockd->nfsd callbacks */ 1171dbf847ecSJ. Bruce Fields retval = nfsd_idmap_init(); 1172dbf847ecSJ. Bruce Fields if (retval) 1173dbf847ecSJ. Bruce Fields goto out_free_lockd; 1174e331f606SJ. Bruce Fields retval = create_proc_exports_entry(); 1175e331f606SJ. Bruce Fields if (retval) 1176e331f606SJ. Bruce Fields goto out_free_idmap; 11771da177e4SLinus Torvalds retval = register_filesystem(&nfsd_fs_type); 117826808d3fSJ. Bruce Fields if (retval) 117926808d3fSJ. Bruce Fields goto out_free_all; 118026808d3fSJ. Bruce Fields return 0; 118126808d3fSJ. Bruce Fields out_free_all: 11821da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 11831da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 1184e331f606SJ. Bruce Fields out_free_idmap: 1185dbf847ecSJ. Bruce Fields nfsd_idmap_shutdown(); 1186dbf847ecSJ. Bruce Fields out_free_lockd: 11871da177e4SLinus Torvalds nfsd_lockd_shutdown(); 1188b89109beSStanislav Kinsbursky nfsd_export_shutdown(&init_net); 1189dbf847ecSJ. Bruce Fields out_free_cache: 1190e331f606SJ. Bruce Fields nfsd_reply_cache_shutdown(); 1191d5c3428bSJ. Bruce Fields out_free_stat: 1192d5c3428bSJ. Bruce Fields nfsd_stat_shutdown(); 119365178db4SBryan Schumaker nfsd_fault_inject_cleanup(); 119465178db4SBryan Schumaker out_free_slabs: 119546b25895SJ. Bruce Fields nfsd4_free_slabs(); 11967ea34ac1SJeff Layton out_unregister_pernet: 11977ea34ac1SJeff Layton unregister_pernet_subsys(&nfsd_net_ops); 1198813fd320SJeff Layton out_unregister_notifier: 1199797a9d79SJeff Layton unregister_cld_notifier(); 12001da177e4SLinus Torvalds return retval; 12011da177e4SLinus Torvalds } 12021da177e4SLinus Torvalds 12031da177e4SLinus Torvalds static void __exit exit_nfsd(void) 12041da177e4SLinus Torvalds { 1205b89109beSStanislav Kinsbursky nfsd_export_shutdown(&init_net); 1206d5c3428bSJ. Bruce Fields nfsd_reply_cache_shutdown(); 12071da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 12081da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 12091da177e4SLinus Torvalds nfsd_stat_shutdown(); 12101da177e4SLinus Torvalds nfsd_lockd_shutdown(); 12111da177e4SLinus Torvalds nfsd_idmap_shutdown(); 1212e8ff2a84SJ. Bruce Fields nfsd4_free_slabs(); 121365178db4SBryan Schumaker nfsd_fault_inject_cleanup(); 12141da177e4SLinus Torvalds unregister_filesystem(&nfsd_fs_type); 12157ea34ac1SJeff Layton unregister_pernet_subsys(&nfsd_net_ops); 1216797a9d79SJeff Layton unregister_cld_notifier(); 12171da177e4SLinus Torvalds } 12181da177e4SLinus Torvalds 12191da177e4SLinus Torvalds MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); 12201da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 12211da177e4SLinus Torvalds module_init(init_nfsd) 12221da177e4SLinus Torvalds module_exit(exit_nfsd) 1223