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, 38a2f999a3SJeff Layton NFSD_Reply_Cache_Stats, 3970c3b76cSNeilBrown NFSD_Versions, 4080212d59SNeilBrown NFSD_Ports, 41596bbe53SNeilBrown NFSD_MaxBlkSize, 42*5b8db00bSJeff Layton NFSD_MaxConnections, 43b0b0c0a2SKevin Coffman NFSD_SupportedEnctypes, 4470c3b76cSNeilBrown /* 4570c3b76cSNeilBrown * The below MUST come last. Otherwise we leave a hole in nfsd_files[] 4670c3b76cSNeilBrown * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops 4770c3b76cSNeilBrown */ 4870c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 491da177e4SLinus Torvalds NFSD_Leasetime, 50efc4bb4fSJ. Bruce Fields NFSD_Gracetime, 510964a3d3SNeilBrown NFSD_RecoveryDir, 5270c3b76cSNeilBrown #endif 531da177e4SLinus Torvalds }; 541da177e4SLinus Torvalds 551da177e4SLinus Torvalds /* 561da177e4SLinus Torvalds * write() for these nodes. 571da177e4SLinus Torvalds */ 581da177e4SLinus Torvalds static ssize_t write_filehandle(struct file *file, char *buf, size_t size); 59b046ccdcSChuck Lever static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size); 60b046ccdcSChuck Lever static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size); 611da177e4SLinus Torvalds static ssize_t write_threads(struct file *file, char *buf, size_t size); 62eed2965aSGreg Banks static ssize_t write_pool_threads(struct file *file, char *buf, size_t size); 6370c3b76cSNeilBrown static ssize_t write_versions(struct file *file, char *buf, size_t size); 6480212d59SNeilBrown static ssize_t write_ports(struct file *file, char *buf, size_t size); 65596bbe53SNeilBrown static ssize_t write_maxblksize(struct file *file, char *buf, size_t size); 66*5b8db00bSJeff Layton static ssize_t write_maxconn(struct file *file, char *buf, size_t size); 6770c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 681da177e4SLinus Torvalds static ssize_t write_leasetime(struct file *file, char *buf, size_t size); 69efc4bb4fSJ. Bruce Fields static ssize_t write_gracetime(struct file *file, char *buf, size_t size); 700964a3d3SNeilBrown static ssize_t write_recoverydir(struct file *file, char *buf, size_t size); 7170c3b76cSNeilBrown #endif 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds static ssize_t (*write_op[])(struct file *, char *, size_t) = { 741da177e4SLinus Torvalds [NFSD_Fh] = write_filehandle, 75b046ccdcSChuck Lever [NFSD_FO_UnlockIP] = write_unlock_ip, 76b046ccdcSChuck Lever [NFSD_FO_UnlockFS] = write_unlock_fs, 771da177e4SLinus Torvalds [NFSD_Threads] = write_threads, 78eed2965aSGreg Banks [NFSD_Pool_Threads] = write_pool_threads, 7970c3b76cSNeilBrown [NFSD_Versions] = write_versions, 8080212d59SNeilBrown [NFSD_Ports] = write_ports, 81596bbe53SNeilBrown [NFSD_MaxBlkSize] = write_maxblksize, 82*5b8db00bSJeff Layton [NFSD_MaxConnections] = write_maxconn, 8370c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 841da177e4SLinus Torvalds [NFSD_Leasetime] = write_leasetime, 85efc4bb4fSJ. Bruce Fields [NFSD_Gracetime] = write_gracetime, 860964a3d3SNeilBrown [NFSD_RecoveryDir] = write_recoverydir, 8770c3b76cSNeilBrown #endif 881da177e4SLinus Torvalds }; 891da177e4SLinus Torvalds 901da177e4SLinus Torvalds static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos) 911da177e4SLinus Torvalds { 92496ad9aaSAl Viro ino_t ino = file_inode(file)->i_ino; 931da177e4SLinus Torvalds char *data; 941da177e4SLinus Torvalds ssize_t rv; 951da177e4SLinus Torvalds 96e8c96f8cSTobias Klauser if (ino >= ARRAY_SIZE(write_op) || !write_op[ino]) 971da177e4SLinus Torvalds return -EINVAL; 981da177e4SLinus Torvalds 991da177e4SLinus Torvalds data = simple_transaction_get(file, buf, size); 1001da177e4SLinus Torvalds if (IS_ERR(data)) 1011da177e4SLinus Torvalds return PTR_ERR(data); 1021da177e4SLinus Torvalds 1031da177e4SLinus Torvalds rv = write_op[ino](file, data, size); 1048971a101SNeilBrown if (rv >= 0) { 1051da177e4SLinus Torvalds simple_transaction_set(file, rv); 1061da177e4SLinus Torvalds rv = size; 1071da177e4SLinus Torvalds } 1081da177e4SLinus Torvalds return rv; 1091da177e4SLinus Torvalds } 1101da177e4SLinus Torvalds 1117390022dSNeilBrown static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos) 1127390022dSNeilBrown { 1137390022dSNeilBrown if (! file->private_data) { 1147390022dSNeilBrown /* An attempt to read a transaction file without writing 1157390022dSNeilBrown * causes a 0-byte write so that the file can return 1167390022dSNeilBrown * state information 1177390022dSNeilBrown */ 1187390022dSNeilBrown ssize_t rv = nfsctl_transaction_write(file, buf, 0, pos); 1197390022dSNeilBrown if (rv < 0) 1207390022dSNeilBrown return rv; 1217390022dSNeilBrown } 1227390022dSNeilBrown return simple_transaction_read(file, buf, size, pos); 1237390022dSNeilBrown } 1247390022dSNeilBrown 1254b6f5d20SArjan van de Ven static const struct file_operations transaction_ops = { 1261da177e4SLinus Torvalds .write = nfsctl_transaction_write, 1277390022dSNeilBrown .read = nfsctl_transaction_read, 1281da177e4SLinus Torvalds .release = simple_transaction_release, 1296038f373SArnd Bergmann .llseek = default_llseek, 1301da177e4SLinus Torvalds }; 1311da177e4SLinus Torvalds 13296d851c4SStanislav Kinsbursky static int exports_net_open(struct net *net, struct file *file) 1331da177e4SLinus Torvalds { 134f2c7ea10SStanislav Kinsbursky int err; 135f2c7ea10SStanislav Kinsbursky struct seq_file *seq; 13696d851c4SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 137f2c7ea10SStanislav Kinsbursky 138f2c7ea10SStanislav Kinsbursky err = seq_open(file, &nfs_exports_op); 139f2c7ea10SStanislav Kinsbursky if (err) 140f2c7ea10SStanislav Kinsbursky return err; 141f2c7ea10SStanislav Kinsbursky 142f2c7ea10SStanislav Kinsbursky seq = file->private_data; 143e5f06f72SStanislav Kinsbursky seq->private = nn->svc_export_cache; 144f2c7ea10SStanislav Kinsbursky return 0; 1451da177e4SLinus Torvalds } 1461da177e4SLinus Torvalds 14796d851c4SStanislav Kinsbursky static int exports_proc_open(struct inode *inode, struct file *file) 14896d851c4SStanislav Kinsbursky { 14996d851c4SStanislav Kinsbursky return exports_net_open(current->nsproxy->net_ns, file); 15096d851c4SStanislav Kinsbursky } 15196d851c4SStanislav Kinsbursky 15296d851c4SStanislav Kinsbursky static const struct file_operations exports_proc_operations = { 15396d851c4SStanislav Kinsbursky .open = exports_proc_open, 15496d851c4SStanislav Kinsbursky .read = seq_read, 15596d851c4SStanislav Kinsbursky .llseek = seq_lseek, 15696d851c4SStanislav Kinsbursky .release = seq_release, 15796d851c4SStanislav Kinsbursky .owner = THIS_MODULE, 15896d851c4SStanislav Kinsbursky }; 15996d851c4SStanislav Kinsbursky 16096d851c4SStanislav Kinsbursky static int exports_nfsd_open(struct inode *inode, struct file *file) 16196d851c4SStanislav Kinsbursky { 16296d851c4SStanislav Kinsbursky return exports_net_open(inode->i_sb->s_fs_info, file); 16396d851c4SStanislav Kinsbursky } 16496d851c4SStanislav Kinsbursky 16596d851c4SStanislav Kinsbursky static const struct file_operations exports_nfsd_operations = { 16696d851c4SStanislav Kinsbursky .open = exports_nfsd_open, 1671da177e4SLinus Torvalds .read = seq_read, 1681da177e4SLinus Torvalds .llseek = seq_lseek, 1691da177e4SLinus Torvalds .release = seq_release, 1709ef2db26SDenis V. Lunev .owner = THIS_MODULE, 1711da177e4SLinus Torvalds }; 1721da177e4SLinus Torvalds 173e8e8753fSJ. Bruce Fields static int export_features_show(struct seq_file *m, void *v) 174e8e8753fSJ. Bruce Fields { 175e8e8753fSJ. Bruce Fields seq_printf(m, "0x%x 0x%x\n", NFSEXP_ALLFLAGS, NFSEXP_SECINFO_FLAGS); 176e8e8753fSJ. Bruce Fields return 0; 177e8e8753fSJ. Bruce Fields } 178e8e8753fSJ. Bruce Fields 179e8e8753fSJ. Bruce Fields static int export_features_open(struct inode *inode, struct file *file) 180e8e8753fSJ. Bruce Fields { 181e8e8753fSJ. Bruce Fields return single_open(file, export_features_show, NULL); 182e8e8753fSJ. Bruce Fields } 183e8e8753fSJ. Bruce Fields 18475ef9de1SAl Viro static const struct file_operations export_features_operations = { 185e8e8753fSJ. Bruce Fields .open = export_features_open, 186e8e8753fSJ. Bruce Fields .read = seq_read, 187e8e8753fSJ. Bruce Fields .llseek = seq_lseek, 188e8e8753fSJ. Bruce Fields .release = single_release, 189e8e8753fSJ. Bruce Fields }; 190e8e8753fSJ. Bruce Fields 191b084f598SJ. Bruce Fields #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) 192b0b0c0a2SKevin Coffman static int supported_enctypes_show(struct seq_file *m, void *v) 193b0b0c0a2SKevin Coffman { 194b084f598SJ. Bruce Fields seq_printf(m, KRB5_SUPPORTED_ENCTYPES); 195b0b0c0a2SKevin Coffman return 0; 196b0b0c0a2SKevin Coffman } 197b0b0c0a2SKevin Coffman 198b0b0c0a2SKevin Coffman static int supported_enctypes_open(struct inode *inode, struct file *file) 199b0b0c0a2SKevin Coffman { 200b0b0c0a2SKevin Coffman return single_open(file, supported_enctypes_show, NULL); 201b0b0c0a2SKevin Coffman } 202b0b0c0a2SKevin Coffman 20375ef9de1SAl Viro static const struct file_operations supported_enctypes_ops = { 204b0b0c0a2SKevin Coffman .open = supported_enctypes_open, 205b0b0c0a2SKevin Coffman .read = seq_read, 206b0b0c0a2SKevin Coffman .llseek = seq_lseek, 207b0b0c0a2SKevin Coffman .release = single_release, 208b0b0c0a2SKevin Coffman }; 209b084f598SJ. Bruce Fields #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ 210b0b0c0a2SKevin Coffman 211828c0950SAlexey Dobriyan static const struct file_operations pool_stats_operations = { 21203cf6c9fSGreg Banks .open = nfsd_pool_stats_open, 21303cf6c9fSGreg Banks .read = seq_read, 21403cf6c9fSGreg Banks .llseek = seq_lseek, 215ed2d8aedSRyusei Yamaguchi .release = nfsd_pool_stats_release, 21603cf6c9fSGreg Banks .owner = THIS_MODULE, 21703cf6c9fSGreg Banks }; 21803cf6c9fSGreg Banks 219a2f999a3SJeff Layton static struct file_operations reply_cache_stats_operations = { 220a2f999a3SJeff Layton .open = nfsd_reply_cache_stats_open, 221a2f999a3SJeff Layton .read = seq_read, 222a2f999a3SJeff Layton .llseek = seq_lseek, 223a2f999a3SJeff Layton .release = single_release, 224a2f999a3SJeff Layton }; 225a2f999a3SJeff Layton 2261da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 2271da177e4SLinus Torvalds /* 2281da177e4SLinus Torvalds * payload - write methods 2291da177e4SLinus Torvalds */ 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds 232262a0982SChuck Lever /** 233262a0982SChuck Lever * write_unlock_ip - Release all locks used by a client 234262a0982SChuck Lever * 235262a0982SChuck Lever * Experimental. 236262a0982SChuck Lever * 237262a0982SChuck Lever * Input: 238262a0982SChuck Lever * buf: '\n'-terminated C string containing a 2394116092bSChuck Lever * presentation format IP address 240262a0982SChuck Lever * size: length of C string in @buf 241262a0982SChuck Lever * Output: 242262a0982SChuck Lever * On success: returns zero if all specified locks were released; 243262a0982SChuck Lever * returns one if one or more locks were not released 244262a0982SChuck Lever * On error: return code is negative errno value 245262a0982SChuck Lever */ 246b046ccdcSChuck Lever static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size) 2474373ea84SWendy Cheng { 2484116092bSChuck Lever struct sockaddr_storage address; 2494116092bSChuck Lever struct sockaddr *sap = (struct sockaddr *)&address; 2504116092bSChuck Lever size_t salen = sizeof(address); 251367c8c7bSChuck Lever char *fo_path; 25211f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 2534373ea84SWendy Cheng 2544373ea84SWendy Cheng /* sanity check */ 2554373ea84SWendy Cheng if (size == 0) 2564373ea84SWendy Cheng return -EINVAL; 2574373ea84SWendy Cheng 2584373ea84SWendy Cheng if (buf[size-1] != '\n') 2594373ea84SWendy Cheng return -EINVAL; 2604373ea84SWendy Cheng 2614373ea84SWendy Cheng fo_path = buf; 2624373ea84SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 2634373ea84SWendy Cheng return -EINVAL; 2644373ea84SWendy Cheng 26511f77942SStanislav Kinsbursky if (rpc_pton(net, fo_path, size, sap, salen) == 0) 2664373ea84SWendy Cheng return -EINVAL; 2674373ea84SWendy Cheng 2684116092bSChuck Lever return nlmsvc_unlock_all_by_ip(sap); 2694373ea84SWendy Cheng } 2704373ea84SWendy Cheng 271262a0982SChuck Lever /** 272262a0982SChuck Lever * write_unlock_fs - Release all locks on a local file system 273262a0982SChuck Lever * 274262a0982SChuck Lever * Experimental. 275262a0982SChuck Lever * 276262a0982SChuck Lever * Input: 277262a0982SChuck Lever * buf: '\n'-terminated C string containing the 278262a0982SChuck Lever * absolute pathname of a local file system 279262a0982SChuck Lever * size: length of C string in @buf 280262a0982SChuck Lever * Output: 281262a0982SChuck Lever * On success: returns zero if all specified locks were released; 282262a0982SChuck Lever * returns one if one or more locks were not released 283262a0982SChuck Lever * On error: return code is negative errno value 284262a0982SChuck Lever */ 285b046ccdcSChuck Lever static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size) 28617efa372SWendy Cheng { 287a63bb996SAl Viro struct path path; 28817efa372SWendy Cheng char *fo_path; 28917efa372SWendy Cheng int error; 29017efa372SWendy Cheng 29117efa372SWendy Cheng /* sanity check */ 29217efa372SWendy Cheng if (size == 0) 29317efa372SWendy Cheng return -EINVAL; 29417efa372SWendy Cheng 29517efa372SWendy Cheng if (buf[size-1] != '\n') 29617efa372SWendy Cheng return -EINVAL; 29717efa372SWendy Cheng 29817efa372SWendy Cheng fo_path = buf; 29917efa372SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 30017efa372SWendy Cheng return -EINVAL; 30117efa372SWendy Cheng 302a63bb996SAl Viro error = kern_path(fo_path, 0, &path); 30317efa372SWendy Cheng if (error) 30417efa372SWendy Cheng return error; 30517efa372SWendy Cheng 306262a0982SChuck Lever /* 307262a0982SChuck Lever * XXX: Needs better sanity checking. Otherwise we could end up 308262a0982SChuck Lever * releasing locks on the wrong file system. 309262a0982SChuck Lever * 310262a0982SChuck Lever * For example: 311262a0982SChuck Lever * 1. Does the path refer to a directory? 312262a0982SChuck Lever * 2. Is that directory a mount point, or 313262a0982SChuck Lever * 3. Is that directory the root of an exported file system? 314262a0982SChuck Lever */ 315d8c9584eSAl Viro error = nlmsvc_unlock_all_by_sb(path.dentry->d_sb); 31617efa372SWendy Cheng 317a63bb996SAl Viro path_put(&path); 31817efa372SWendy Cheng return error; 31917efa372SWendy Cheng } 32017efa372SWendy Cheng 321262a0982SChuck Lever /** 322262a0982SChuck Lever * write_filehandle - Get a variable-length NFS file handle by path 323262a0982SChuck Lever * 324262a0982SChuck Lever * On input, the buffer contains a '\n'-terminated C string comprised of 325262a0982SChuck Lever * three alphanumeric words separated by whitespace. The string may 326262a0982SChuck Lever * contain escape sequences. 327262a0982SChuck Lever * 328262a0982SChuck Lever * Input: 329262a0982SChuck Lever * buf: 330262a0982SChuck Lever * domain: client domain name 331262a0982SChuck Lever * path: export pathname 332262a0982SChuck Lever * maxsize: numeric maximum size of 333262a0982SChuck Lever * @buf 334262a0982SChuck Lever * size: length of C string in @buf 335262a0982SChuck Lever * Output: 336262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 337262a0982SChuck Lever * string containing a ASCII hex text version 338262a0982SChuck Lever * of the NFS file handle; 339262a0982SChuck Lever * return code is the size in bytes of the string 340262a0982SChuck Lever * On error: return code is negative errno value 341262a0982SChuck Lever */ 3421da177e4SLinus Torvalds static ssize_t write_filehandle(struct file *file, char *buf, size_t size) 3431da177e4SLinus Torvalds { 3441da177e4SLinus Torvalds char *dname, *path; 345246d95baSAndrew Morton int uninitialized_var(maxsize); 3461da177e4SLinus Torvalds char *mesg = buf; 3471da177e4SLinus Torvalds int len; 3481da177e4SLinus Torvalds struct auth_domain *dom; 3491da177e4SLinus Torvalds struct knfsd_fh fh; 35011f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 3511da177e4SLinus Torvalds 35287d26ea7SJ. Bruce Fields if (size == 0) 35387d26ea7SJ. Bruce Fields return -EINVAL; 35487d26ea7SJ. Bruce Fields 3551da177e4SLinus Torvalds if (buf[size-1] != '\n') 3561da177e4SLinus Torvalds return -EINVAL; 3571da177e4SLinus Torvalds buf[size-1] = 0; 3581da177e4SLinus Torvalds 3591da177e4SLinus Torvalds dname = mesg; 3601da177e4SLinus Torvalds len = qword_get(&mesg, dname, size); 36154224f04SChuck Lever if (len <= 0) 36254224f04SChuck Lever return -EINVAL; 3631da177e4SLinus Torvalds 3641da177e4SLinus Torvalds path = dname+len+1; 3651da177e4SLinus Torvalds len = qword_get(&mesg, path, size); 36654224f04SChuck Lever if (len <= 0) 36754224f04SChuck Lever return -EINVAL; 3681da177e4SLinus Torvalds 3691da177e4SLinus Torvalds len = get_int(&mesg, &maxsize); 3701da177e4SLinus Torvalds if (len) 3711da177e4SLinus Torvalds return len; 3721da177e4SLinus Torvalds 3731da177e4SLinus Torvalds if (maxsize < NFS_FHSIZE) 3741da177e4SLinus Torvalds return -EINVAL; 3753c7aa15dSKinglong Mee maxsize = min(maxsize, NFS3_FHSIZE); 3761da177e4SLinus Torvalds 3771da177e4SLinus Torvalds if (qword_get(&mesg, mesg, size)>0) 3781da177e4SLinus Torvalds return -EINVAL; 3791da177e4SLinus Torvalds 3801da177e4SLinus Torvalds /* we have all the words, they are in buf.. */ 3811da177e4SLinus Torvalds dom = unix_domain_find(dname); 3821da177e4SLinus Torvalds if (!dom) 3831da177e4SLinus Torvalds return -ENOMEM; 3841da177e4SLinus Torvalds 38511f77942SStanislav Kinsbursky len = exp_rootfh(net, dom, path, &fh, maxsize); 3861da177e4SLinus Torvalds auth_domain_put(dom); 3871da177e4SLinus Torvalds if (len) 3881da177e4SLinus Torvalds return len; 3891da177e4SLinus Torvalds 39054224f04SChuck Lever mesg = buf; 39154224f04SChuck Lever len = SIMPLE_TRANSACTION_LIMIT; 3921da177e4SLinus Torvalds qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size); 3931da177e4SLinus Torvalds mesg[-1] = '\n'; 3941da177e4SLinus Torvalds return mesg - buf; 3951da177e4SLinus Torvalds } 3961da177e4SLinus Torvalds 397262a0982SChuck Lever /** 398262a0982SChuck Lever * write_threads - Start NFSD, or report the current number of running threads 399262a0982SChuck Lever * 400262a0982SChuck Lever * Input: 401262a0982SChuck Lever * buf: ignored 402262a0982SChuck Lever * size: zero 403262a0982SChuck Lever * Output: 404262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 405262a0982SChuck Lever * string numeric value representing the number of 406262a0982SChuck Lever * running NFSD threads; 407262a0982SChuck Lever * return code is the size in bytes of the string 408262a0982SChuck Lever * On error: return code is zero 409262a0982SChuck Lever * 410262a0982SChuck Lever * OR 411262a0982SChuck Lever * 412262a0982SChuck Lever * Input: 413262a0982SChuck Lever * buf: C string containing an unsigned 414262a0982SChuck Lever * integer value representing the 415262a0982SChuck Lever * number of NFSD threads to start 416262a0982SChuck Lever * size: non-zero length of C string in @buf 417262a0982SChuck Lever * Output: 418262a0982SChuck Lever * On success: NFS service is started; 419262a0982SChuck Lever * passed-in buffer filled with '\n'-terminated C 420262a0982SChuck Lever * string numeric value representing the number of 421262a0982SChuck Lever * running NFSD threads; 422262a0982SChuck Lever * return code is the size in bytes of the string 423262a0982SChuck Lever * On error: return code is zero or a negative errno value 424262a0982SChuck Lever */ 4251da177e4SLinus Torvalds static ssize_t write_threads(struct file *file, char *buf, size_t size) 4261da177e4SLinus Torvalds { 4271da177e4SLinus Torvalds char *mesg = buf; 4281da177e4SLinus Torvalds int rv; 42911f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 430d41a9417SStanislav Kinsbursky 4311da177e4SLinus Torvalds if (size > 0) { 4321da177e4SLinus Torvalds int newthreads; 4331da177e4SLinus Torvalds rv = get_int(&mesg, &newthreads); 4341da177e4SLinus Torvalds if (rv) 4351da177e4SLinus Torvalds return rv; 4361da177e4SLinus Torvalds if (newthreads < 0) 4371da177e4SLinus Torvalds return -EINVAL; 438d41a9417SStanislav Kinsbursky rv = nfsd_svc(newthreads, net); 43982e12fe9SNeilBrown if (rv < 0) 4401da177e4SLinus Torvalds return rv; 44182e12fe9SNeilBrown } else 4429dd9845fSStanislav Kinsbursky rv = nfsd_nrthreads(net); 443e06b6405SChuck Lever 44482e12fe9SNeilBrown return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv); 4451da177e4SLinus Torvalds } 4461da177e4SLinus Torvalds 447262a0982SChuck Lever /** 448262a0982SChuck Lever * write_pool_threads - Set or report the current number of threads per pool 449262a0982SChuck Lever * 450262a0982SChuck Lever * Input: 451262a0982SChuck Lever * buf: ignored 452262a0982SChuck Lever * size: zero 453262a0982SChuck Lever * 454262a0982SChuck Lever * OR 455262a0982SChuck Lever * 456262a0982SChuck Lever * Input: 457262a0982SChuck Lever * buf: C string containing whitespace- 458262a0982SChuck Lever * separated unsigned integer values 459262a0982SChuck Lever * representing the number of NFSD 460262a0982SChuck Lever * threads to start in each pool 461262a0982SChuck Lever * size: non-zero length of C string in @buf 462262a0982SChuck Lever * Output: 463262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 464262a0982SChuck Lever * string containing integer values representing the 465262a0982SChuck Lever * number of NFSD threads in each pool; 466262a0982SChuck Lever * return code is the size in bytes of the string 467262a0982SChuck Lever * On error: return code is zero or a negative errno value 468262a0982SChuck Lever */ 469eed2965aSGreg Banks static ssize_t write_pool_threads(struct file *file, char *buf, size_t size) 470eed2965aSGreg Banks { 471eed2965aSGreg Banks /* if size > 0, look for an array of number of threads per node 472eed2965aSGreg Banks * and apply them then write out number of threads per node as reply 473eed2965aSGreg Banks */ 474eed2965aSGreg Banks char *mesg = buf; 475eed2965aSGreg Banks int i; 476eed2965aSGreg Banks int rv; 477eed2965aSGreg Banks int len; 478bedbdd8bSNeil Brown int npools; 479eed2965aSGreg Banks int *nthreads; 48011f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 481eed2965aSGreg Banks 482bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 4839dd9845fSStanislav Kinsbursky npools = nfsd_nrpools(net); 484eed2965aSGreg Banks if (npools == 0) { 485eed2965aSGreg Banks /* 486eed2965aSGreg Banks * NFS is shut down. The admin can start it by 487eed2965aSGreg Banks * writing to the threads file but NOT the pool_threads 488eed2965aSGreg Banks * file, sorry. Report zero threads. 489eed2965aSGreg Banks */ 490bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 491eed2965aSGreg Banks strcpy(buf, "0\n"); 492eed2965aSGreg Banks return strlen(buf); 493eed2965aSGreg Banks } 494eed2965aSGreg Banks 495eed2965aSGreg Banks nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL); 496bedbdd8bSNeil Brown rv = -ENOMEM; 497eed2965aSGreg Banks if (nthreads == NULL) 498bedbdd8bSNeil Brown goto out_free; 499eed2965aSGreg Banks 500eed2965aSGreg Banks if (size > 0) { 501eed2965aSGreg Banks for (i = 0; i < npools; i++) { 502eed2965aSGreg Banks rv = get_int(&mesg, &nthreads[i]); 503eed2965aSGreg Banks if (rv == -ENOENT) 504eed2965aSGreg Banks break; /* fewer numbers than pools */ 505eed2965aSGreg Banks if (rv) 506eed2965aSGreg Banks goto out_free; /* syntax error */ 507eed2965aSGreg Banks rv = -EINVAL; 508eed2965aSGreg Banks if (nthreads[i] < 0) 509eed2965aSGreg Banks goto out_free; 510eed2965aSGreg Banks } 5113938a0d5SStanislav Kinsbursky rv = nfsd_set_nrthreads(i, nthreads, net); 512eed2965aSGreg Banks if (rv) 513eed2965aSGreg Banks goto out_free; 514eed2965aSGreg Banks } 515eed2965aSGreg Banks 5169dd9845fSStanislav Kinsbursky rv = nfsd_get_nrthreads(npools, nthreads, net); 517eed2965aSGreg Banks if (rv) 518eed2965aSGreg Banks goto out_free; 519eed2965aSGreg Banks 520eed2965aSGreg Banks mesg = buf; 521eed2965aSGreg Banks size = SIMPLE_TRANSACTION_LIMIT; 522eed2965aSGreg Banks for (i = 0; i < npools && size > 0; i++) { 523eed2965aSGreg Banks snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' ')); 524eed2965aSGreg Banks len = strlen(mesg); 525eed2965aSGreg Banks size -= len; 526eed2965aSGreg Banks mesg += len; 527eed2965aSGreg Banks } 528413d63d7SJ. Bruce Fields rv = mesg - buf; 529eed2965aSGreg Banks out_free: 530eed2965aSGreg Banks kfree(nthreads); 531bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 532eed2965aSGreg Banks return rv; 533eed2965aSGreg Banks } 534eed2965aSGreg Banks 5353dd98a3bSJeff Layton static ssize_t __write_versions(struct file *file, char *buf, size_t size) 53670c3b76cSNeilBrown { 53770c3b76cSNeilBrown char *mesg = buf; 5388daf220aSBenny Halevy char *vers, *minorp, sign; 539261758b5SChuck Lever int len, num, remaining; 5408daf220aSBenny Halevy unsigned minor; 54170c3b76cSNeilBrown ssize_t tlen = 0; 54270c3b76cSNeilBrown char *sep; 54311f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 5449dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 54570c3b76cSNeilBrown 54670c3b76cSNeilBrown if (size>0) { 5479dd9845fSStanislav Kinsbursky if (nn->nfsd_serv) 5486658d3a7SNeilBrown /* Cannot change versions without updating 5499dd9845fSStanislav Kinsbursky * nn->nfsd_serv->sv_xdrsize, and reallocing 5506658d3a7SNeilBrown * rq_argp and rq_resp 5516658d3a7SNeilBrown */ 55270c3b76cSNeilBrown return -EBUSY; 55370c3b76cSNeilBrown if (buf[size-1] != '\n') 55470c3b76cSNeilBrown return -EINVAL; 55570c3b76cSNeilBrown buf[size-1] = 0; 55670c3b76cSNeilBrown 55770c3b76cSNeilBrown vers = mesg; 55870c3b76cSNeilBrown len = qword_get(&mesg, vers, size); 55970c3b76cSNeilBrown if (len <= 0) return -EINVAL; 56070c3b76cSNeilBrown do { 56170c3b76cSNeilBrown sign = *vers; 56270c3b76cSNeilBrown if (sign == '+' || sign == '-') 5638daf220aSBenny Halevy num = simple_strtol((vers+1), &minorp, 0); 56470c3b76cSNeilBrown else 5658daf220aSBenny Halevy num = simple_strtol(vers, &minorp, 0); 5668daf220aSBenny Halevy if (*minorp == '.') { 567ff89be87SJ. Bruce Fields if (num != 4) 5688daf220aSBenny Halevy return -EINVAL; 5698daf220aSBenny Halevy minor = simple_strtoul(minorp+1, NULL, 0); 5708daf220aSBenny Halevy if (minor == 0) 5718daf220aSBenny Halevy return -EINVAL; 5728daf220aSBenny Halevy if (nfsd_minorversion(minor, sign == '-' ? 5738daf220aSBenny Halevy NFSD_CLEAR : NFSD_SET) < 0) 5748daf220aSBenny Halevy return -EINVAL; 5758daf220aSBenny Halevy goto next; 5768daf220aSBenny Halevy } 57770c3b76cSNeilBrown switch(num) { 57870c3b76cSNeilBrown case 2: 57970c3b76cSNeilBrown case 3: 58070c3b76cSNeilBrown case 4: 5816658d3a7SNeilBrown nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET); 58270c3b76cSNeilBrown break; 58370c3b76cSNeilBrown default: 58470c3b76cSNeilBrown return -EINVAL; 58570c3b76cSNeilBrown } 5868daf220aSBenny Halevy next: 58770c3b76cSNeilBrown vers += len + 1; 58870c3b76cSNeilBrown } while ((len = qword_get(&mesg, vers, size)) > 0); 58970c3b76cSNeilBrown /* If all get turned off, turn them back on, as 59070c3b76cSNeilBrown * having no versions is BAD 59170c3b76cSNeilBrown */ 5926658d3a7SNeilBrown nfsd_reset_versions(); 59370c3b76cSNeilBrown } 594261758b5SChuck Lever 59570c3b76cSNeilBrown /* Now write current state into reply buffer */ 59670c3b76cSNeilBrown len = 0; 59770c3b76cSNeilBrown sep = ""; 598261758b5SChuck Lever remaining = SIMPLE_TRANSACTION_LIMIT; 59970c3b76cSNeilBrown for (num=2 ; num <= 4 ; num++) 6006658d3a7SNeilBrown if (nfsd_vers(num, NFSD_AVAIL)) { 601261758b5SChuck Lever len = snprintf(buf, remaining, "%s%c%d", sep, 6026658d3a7SNeilBrown nfsd_vers(num, NFSD_TEST)?'+':'-', 60370c3b76cSNeilBrown num); 60470c3b76cSNeilBrown sep = " "; 605261758b5SChuck Lever 606261758b5SChuck Lever if (len > remaining) 607261758b5SChuck Lever break; 608261758b5SChuck Lever remaining -= len; 609261758b5SChuck Lever buf += len; 610261758b5SChuck Lever tlen += len; 61170c3b76cSNeilBrown } 6128daf220aSBenny Halevy if (nfsd_vers(4, NFSD_AVAIL)) 613261758b5SChuck Lever for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; 614261758b5SChuck Lever minor++) { 615261758b5SChuck Lever len = snprintf(buf, remaining, " %c4.%u", 6168daf220aSBenny Halevy (nfsd_vers(4, NFSD_TEST) && 6178daf220aSBenny Halevy nfsd_minorversion(minor, NFSD_TEST)) ? 6188daf220aSBenny Halevy '+' : '-', 6198daf220aSBenny Halevy minor); 620261758b5SChuck Lever 621261758b5SChuck Lever if (len > remaining) 622261758b5SChuck Lever break; 623261758b5SChuck Lever remaining -= len; 624261758b5SChuck Lever buf += len; 625261758b5SChuck Lever tlen += len; 626261758b5SChuck Lever } 627261758b5SChuck Lever 628261758b5SChuck Lever len = snprintf(buf, remaining, "\n"); 629261758b5SChuck Lever if (len > remaining) 630261758b5SChuck Lever return -EINVAL; 631261758b5SChuck Lever return tlen + len; 63270c3b76cSNeilBrown } 63370c3b76cSNeilBrown 634262a0982SChuck Lever /** 635262a0982SChuck Lever * write_versions - Set or report the available NFS protocol versions 636262a0982SChuck Lever * 637262a0982SChuck Lever * Input: 638262a0982SChuck Lever * buf: ignored 639262a0982SChuck Lever * size: zero 640262a0982SChuck Lever * Output: 641262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 642262a0982SChuck Lever * string containing positive or negative integer 643262a0982SChuck Lever * values representing the current status of each 644262a0982SChuck Lever * protocol version; 645262a0982SChuck Lever * return code is the size in bytes of the string 646262a0982SChuck Lever * On error: return code is zero or a negative errno value 647262a0982SChuck Lever * 648262a0982SChuck Lever * OR 649262a0982SChuck Lever * 650262a0982SChuck Lever * Input: 651262a0982SChuck Lever * buf: C string containing whitespace- 652262a0982SChuck Lever * separated positive or negative 653262a0982SChuck Lever * integer values representing NFS 654262a0982SChuck Lever * protocol versions to enable ("+n") 655262a0982SChuck Lever * or disable ("-n") 656262a0982SChuck Lever * size: non-zero length of C string in @buf 657262a0982SChuck Lever * Output: 658262a0982SChuck Lever * On success: status of zero or more protocol versions has 659262a0982SChuck Lever * been updated; passed-in buffer filled with 660262a0982SChuck Lever * '\n'-terminated C string containing positive 661262a0982SChuck Lever * or negative integer values representing the 662262a0982SChuck Lever * current status of each protocol version; 663262a0982SChuck Lever * return code is the size in bytes of the string 664262a0982SChuck Lever * On error: return code is zero or a negative errno value 665262a0982SChuck Lever */ 6663dd98a3bSJeff Layton static ssize_t write_versions(struct file *file, char *buf, size_t size) 6673dd98a3bSJeff Layton { 6683dd98a3bSJeff Layton ssize_t rv; 6693dd98a3bSJeff Layton 6703dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 6713dd98a3bSJeff Layton rv = __write_versions(file, buf, size); 6723dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 6733dd98a3bSJeff Layton return rv; 6743dd98a3bSJeff Layton } 6753dd98a3bSJeff Layton 6764cd5dc75SChuck Lever /* 6770a5372d8SChuck Lever * Zero-length write. Return a list of NFSD's current listener 6780a5372d8SChuck Lever * transports. 6790a5372d8SChuck Lever */ 6809dd9845fSStanislav Kinsbursky static ssize_t __write_ports_names(char *buf, struct net *net) 6810a5372d8SChuck Lever { 6829dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 6839dd9845fSStanislav Kinsbursky 6849dd9845fSStanislav Kinsbursky if (nn->nfsd_serv == NULL) 6850a5372d8SChuck Lever return 0; 6869dd9845fSStanislav Kinsbursky return svc_xprt_names(nn->nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT); 6870a5372d8SChuck Lever } 6880a5372d8SChuck Lever 6890a5372d8SChuck Lever /* 6900b7c2f6fSChuck Lever * A single 'fd' number was written, in which case it must be for 6910b7c2f6fSChuck Lever * a socket of a supported family/protocol, and we use it as an 6920b7c2f6fSChuck Lever * nfsd listener. 6930b7c2f6fSChuck Lever */ 69408160352SStanislav Kinsbursky static ssize_t __write_ports_addfd(char *buf, struct net *net) 6950b7c2f6fSChuck Lever { 6960b7c2f6fSChuck Lever char *mesg = buf; 6970b7c2f6fSChuck Lever int fd, err; 6989dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 6990b7c2f6fSChuck Lever 7000b7c2f6fSChuck Lever err = get_int(&mesg, &fd); 7010b7c2f6fSChuck Lever if (err != 0 || fd < 0) 7020b7c2f6fSChuck Lever return -EINVAL; 7030b7c2f6fSChuck Lever 70430646394SStanislav Kinsbursky if (svc_alien_sock(net, fd)) { 70530646394SStanislav Kinsbursky printk(KERN_ERR "%s: socket net is different to NFSd's one\n", __func__); 70630646394SStanislav Kinsbursky return -EINVAL; 70730646394SStanislav Kinsbursky } 70830646394SStanislav Kinsbursky 7096777436bSStanislav Kinsbursky err = nfsd_create_serv(net); 7100b7c2f6fSChuck Lever if (err != 0) 7110b7c2f6fSChuck Lever return err; 7120b7c2f6fSChuck Lever 7139dd9845fSStanislav Kinsbursky err = svc_addsock(nn->nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT); 71478a8d7c8SJeff Layton if (err < 0) { 71519f7e2caSStanislav Kinsbursky nfsd_destroy(net); 71678a8d7c8SJeff Layton return err; 71778a8d7c8SJeff Layton } 718ea068badSChuck Lever 7190b7c2f6fSChuck Lever /* Decrease the count, but don't shut down the service */ 7209dd9845fSStanislav Kinsbursky nn->nfsd_serv->sv_nrthreads--; 721ea068badSChuck Lever return err; 7220b7c2f6fSChuck Lever } 7230b7c2f6fSChuck Lever 7240b7c2f6fSChuck Lever /* 7254eb68c26SChuck Lever * A transport listener is added by writing it's transport name and 7264eb68c26SChuck Lever * a port number. 7274eb68c26SChuck Lever */ 72808160352SStanislav Kinsbursky static ssize_t __write_ports_addxprt(char *buf, struct net *net) 7294eb68c26SChuck Lever { 7304eb68c26SChuck Lever char transport[16]; 73137498292SChuck Lever struct svc_xprt *xprt; 7324eb68c26SChuck Lever int port, err; 7339dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 7344eb68c26SChuck Lever 735a10fded1SJ. Bruce Fields if (sscanf(buf, "%15s %5u", transport, &port) != 2) 7364eb68c26SChuck Lever return -EINVAL; 7374eb68c26SChuck Lever 7384be929beSAlexey Dobriyan if (port < 1 || port > USHRT_MAX) 7394eb68c26SChuck Lever return -EINVAL; 7404eb68c26SChuck Lever 7416777436bSStanislav Kinsbursky err = nfsd_create_serv(net); 7424eb68c26SChuck Lever if (err != 0) 7434eb68c26SChuck Lever return err; 7444eb68c26SChuck Lever 7459dd9845fSStanislav Kinsbursky err = svc_create_xprt(nn->nfsd_serv, transport, net, 7464eb68c26SChuck Lever PF_INET, port, SVC_SOCK_ANONYMOUS); 74768717908SChuck Lever if (err < 0) 74837498292SChuck Lever goto out_err; 74937498292SChuck Lever 7509dd9845fSStanislav Kinsbursky err = svc_create_xprt(nn->nfsd_serv, transport, net, 75137498292SChuck Lever PF_INET6, port, SVC_SOCK_ANONYMOUS); 75237498292SChuck Lever if (err < 0 && err != -EAFNOSUPPORT) 75337498292SChuck Lever goto out_close; 7540cd14a06SJeff Layton 7550cd14a06SJeff Layton /* Decrease the count, but don't shut down the service */ 7569dd9845fSStanislav Kinsbursky nn->nfsd_serv->sv_nrthreads--; 7574eb68c26SChuck Lever return 0; 75837498292SChuck Lever out_close: 7599dd9845fSStanislav Kinsbursky xprt = svc_find_xprt(nn->nfsd_serv, transport, net, PF_INET, port); 76037498292SChuck Lever if (xprt != NULL) { 76137498292SChuck Lever svc_close_xprt(xprt); 76237498292SChuck Lever svc_xprt_put(xprt); 76337498292SChuck Lever } 76437498292SChuck Lever out_err: 76519f7e2caSStanislav Kinsbursky nfsd_destroy(net); 76637498292SChuck Lever return err; 7674eb68c26SChuck Lever } 7684eb68c26SChuck Lever 76908160352SStanislav Kinsbursky static ssize_t __write_ports(struct file *file, char *buf, size_t size, 77008160352SStanislav Kinsbursky struct net *net) 77180212d59SNeilBrown { 7720a5372d8SChuck Lever if (size == 0) 7739dd9845fSStanislav Kinsbursky return __write_ports_names(buf, net); 7740b7c2f6fSChuck Lever 7750b7c2f6fSChuck Lever if (isdigit(buf[0])) 77608160352SStanislav Kinsbursky return __write_ports_addfd(buf, net); 77782d56591SChuck Lever 7784eb68c26SChuck Lever if (isalpha(buf[0])) 77908160352SStanislav Kinsbursky return __write_ports_addxprt(buf, net); 7804cd5dc75SChuck Lever 781b41b66d6SNeilBrown return -EINVAL; 782b41b66d6SNeilBrown } 78380212d59SNeilBrown 784262a0982SChuck Lever /** 785262a0982SChuck Lever * write_ports - Pass a socket file descriptor or transport name to listen on 786262a0982SChuck Lever * 787262a0982SChuck Lever * Input: 788262a0982SChuck Lever * buf: ignored 789262a0982SChuck Lever * size: zero 790262a0982SChuck Lever * Output: 791262a0982SChuck Lever * On success: passed-in buffer filled with a '\n'-terminated C 792262a0982SChuck Lever * string containing a whitespace-separated list of 793262a0982SChuck Lever * named NFSD listeners; 794262a0982SChuck Lever * return code is the size in bytes of the string 795262a0982SChuck Lever * On error: return code is zero or a negative errno value 796262a0982SChuck Lever * 797262a0982SChuck Lever * OR 798262a0982SChuck Lever * 799262a0982SChuck Lever * Input: 800262a0982SChuck Lever * buf: C string containing an unsigned 801262a0982SChuck Lever * integer value representing a bound 802262a0982SChuck Lever * but unconnected socket that is to be 803c71206a7SChuck Lever * used as an NFSD listener; listen(3) 804c71206a7SChuck Lever * must be called for a SOCK_STREAM 805c71206a7SChuck Lever * socket, otherwise it is ignored 806262a0982SChuck Lever * size: non-zero length of C string in @buf 807262a0982SChuck Lever * Output: 808262a0982SChuck Lever * On success: NFS service is started; 809262a0982SChuck Lever * passed-in buffer filled with a '\n'-terminated C 810262a0982SChuck Lever * string containing a unique alphanumeric name of 811262a0982SChuck Lever * the listener; 812262a0982SChuck Lever * return code is the size in bytes of the string 813262a0982SChuck Lever * On error: return code is a negative errno value 814262a0982SChuck Lever * 815262a0982SChuck Lever * OR 816262a0982SChuck Lever * 817262a0982SChuck Lever * Input: 818262a0982SChuck Lever * buf: C string containing a transport 819262a0982SChuck Lever * name and an unsigned integer value 820262a0982SChuck Lever * representing the port to listen on, 821262a0982SChuck Lever * separated by whitespace 822262a0982SChuck Lever * size: non-zero length of C string in @buf 823262a0982SChuck Lever * Output: 824262a0982SChuck Lever * On success: returns zero; NFS service is started 825262a0982SChuck Lever * On error: return code is a negative errno value 826262a0982SChuck Lever */ 827bedbdd8bSNeil Brown static ssize_t write_ports(struct file *file, char *buf, size_t size) 828bedbdd8bSNeil Brown { 829bedbdd8bSNeil Brown ssize_t rv; 83011f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 8313dd98a3bSJeff Layton 832bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 83308160352SStanislav Kinsbursky rv = __write_ports(file, buf, size, net); 834bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 835bedbdd8bSNeil Brown return rv; 836bedbdd8bSNeil Brown } 837bedbdd8bSNeil Brown 838bedbdd8bSNeil Brown 839596bbe53SNeilBrown int nfsd_max_blksize; 840596bbe53SNeilBrown 841262a0982SChuck Lever /** 842262a0982SChuck Lever * write_maxblksize - Set or report the current NFS blksize 843262a0982SChuck Lever * 844262a0982SChuck Lever * Input: 845262a0982SChuck Lever * buf: ignored 846262a0982SChuck Lever * size: zero 847262a0982SChuck Lever * 848262a0982SChuck Lever * OR 849262a0982SChuck Lever * 850262a0982SChuck Lever * Input: 851262a0982SChuck Lever * buf: C string containing an unsigned 852262a0982SChuck Lever * integer value representing the new 853262a0982SChuck Lever * NFS blksize 854262a0982SChuck Lever * size: non-zero length of C string in @buf 855262a0982SChuck Lever * Output: 856262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C string 857262a0982SChuck Lever * containing numeric value of the current NFS blksize 858262a0982SChuck Lever * setting; 859262a0982SChuck Lever * return code is the size in bytes of the string 860262a0982SChuck Lever * On error: return code is zero or a negative errno value 861262a0982SChuck Lever */ 862596bbe53SNeilBrown static ssize_t write_maxblksize(struct file *file, char *buf, size_t size) 863596bbe53SNeilBrown { 864596bbe53SNeilBrown char *mesg = buf; 86511f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 8669dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 8679dd9845fSStanislav Kinsbursky 868596bbe53SNeilBrown if (size > 0) { 869596bbe53SNeilBrown int bsize; 870596bbe53SNeilBrown int rv = get_int(&mesg, &bsize); 871596bbe53SNeilBrown if (rv) 872596bbe53SNeilBrown return rv; 873596bbe53SNeilBrown /* force bsize into allowed range and 874596bbe53SNeilBrown * required alignment. 875596bbe53SNeilBrown */ 8763c7aa15dSKinglong Mee bsize = max_t(int, bsize, 1024); 8773c7aa15dSKinglong Mee bsize = min_t(int, bsize, NFSSVC_MAXBLKSIZE); 878596bbe53SNeilBrown bsize &= ~(1024-1); 879bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 8809dd9845fSStanislav Kinsbursky if (nn->nfsd_serv) { 881bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 882596bbe53SNeilBrown return -EBUSY; 883596bbe53SNeilBrown } 884596bbe53SNeilBrown nfsd_max_blksize = bsize; 885bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 886596bbe53SNeilBrown } 887e06b6405SChuck Lever 888e06b6405SChuck Lever return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", 889e06b6405SChuck Lever nfsd_max_blksize); 890596bbe53SNeilBrown } 891596bbe53SNeilBrown 892*5b8db00bSJeff Layton /** 893*5b8db00bSJeff Layton * write_maxconn - Set or report the current max number of connections 894*5b8db00bSJeff Layton * 895*5b8db00bSJeff Layton * Input: 896*5b8db00bSJeff Layton * buf: ignored 897*5b8db00bSJeff Layton * size: zero 898*5b8db00bSJeff Layton * OR 899*5b8db00bSJeff Layton * 900*5b8db00bSJeff Layton * Input: 901*5b8db00bSJeff Layton * buf: C string containing an unsigned 902*5b8db00bSJeff Layton * integer value representing the new 903*5b8db00bSJeff Layton * number of max connections 904*5b8db00bSJeff Layton * size: non-zero length of C string in @buf 905*5b8db00bSJeff Layton * Output: 906*5b8db00bSJeff Layton * On success: passed-in buffer filled with '\n'-terminated C string 907*5b8db00bSJeff Layton * containing numeric value of max_connections setting 908*5b8db00bSJeff Layton * for this net namespace; 909*5b8db00bSJeff Layton * return code is the size in bytes of the string 910*5b8db00bSJeff Layton * On error: return code is zero or a negative errno value 911*5b8db00bSJeff Layton */ 912*5b8db00bSJeff Layton static ssize_t write_maxconn(struct file *file, char *buf, size_t size) 913*5b8db00bSJeff Layton { 914*5b8db00bSJeff Layton char *mesg = buf; 915*5b8db00bSJeff Layton struct net *net = file->f_dentry->d_sb->s_fs_info; 916*5b8db00bSJeff Layton struct nfsd_net *nn = net_generic(net, nfsd_net_id); 917*5b8db00bSJeff Layton unsigned int maxconn = nn->max_connections; 918*5b8db00bSJeff Layton 919*5b8db00bSJeff Layton if (size > 0) { 920*5b8db00bSJeff Layton int rv = get_uint(&mesg, &maxconn); 921*5b8db00bSJeff Layton 922*5b8db00bSJeff Layton if (rv) 923*5b8db00bSJeff Layton return rv; 924*5b8db00bSJeff Layton nn->max_connections = maxconn; 925*5b8db00bSJeff Layton } 926*5b8db00bSJeff Layton 927*5b8db00bSJeff Layton return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%u\n", maxconn); 928*5b8db00bSJeff Layton } 929*5b8db00bSJeff Layton 93070c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 9319dd9845fSStanislav Kinsbursky static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, 9329dd9845fSStanislav Kinsbursky time_t *time, struct nfsd_net *nn) 9331da177e4SLinus Torvalds { 9341da177e4SLinus Torvalds char *mesg = buf; 935f0135740SJ. Bruce Fields int rv, i; 9361da177e4SLinus Torvalds 9371da177e4SLinus Torvalds if (size > 0) { 9389dd9845fSStanislav Kinsbursky if (nn->nfsd_serv) 9393dd98a3bSJeff Layton return -EBUSY; 940f0135740SJ. Bruce Fields rv = get_int(&mesg, &i); 9411da177e4SLinus Torvalds if (rv) 9421da177e4SLinus Torvalds return rv; 943e7b184f1SJ. Bruce Fields /* 944e7b184f1SJ. Bruce Fields * Some sanity checking. We don't have a reason for 945e7b184f1SJ. Bruce Fields * these particular numbers, but problems with the 946e7b184f1SJ. Bruce Fields * extremes are: 947e7b184f1SJ. Bruce Fields * - Too short: the briefest network outage may 948e7b184f1SJ. Bruce Fields * cause clients to lose all their locks. Also, 949e7b184f1SJ. Bruce Fields * the frequent polling may be wasteful. 950e7b184f1SJ. Bruce Fields * - Too long: do you really want reboot recovery 951e7b184f1SJ. Bruce Fields * to take more than an hour? Or to make other 952e7b184f1SJ. Bruce Fields * clients wait an hour before being able to 953e7b184f1SJ. Bruce Fields * revoke a dead client's locks? 954e7b184f1SJ. Bruce Fields */ 955f0135740SJ. Bruce Fields if (i < 10 || i > 3600) 9561da177e4SLinus Torvalds return -EINVAL; 957f0135740SJ. Bruce Fields *time = i; 9581da177e4SLinus Torvalds } 959e06b6405SChuck Lever 960f0135740SJ. Bruce Fields return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time); 961f0135740SJ. Bruce Fields } 962f0135740SJ. Bruce Fields 9639dd9845fSStanislav Kinsbursky static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, 9649dd9845fSStanislav Kinsbursky time_t *time, struct nfsd_net *nn) 965f0135740SJ. Bruce Fields { 966f0135740SJ. Bruce Fields ssize_t rv; 967f0135740SJ. Bruce Fields 968f0135740SJ. Bruce Fields mutex_lock(&nfsd_mutex); 9699dd9845fSStanislav Kinsbursky rv = __nfsd4_write_time(file, buf, size, time, nn); 970f0135740SJ. Bruce Fields mutex_unlock(&nfsd_mutex); 971f0135740SJ. Bruce Fields return rv; 9721da177e4SLinus Torvalds } 9731da177e4SLinus Torvalds 974262a0982SChuck Lever /** 975262a0982SChuck Lever * write_leasetime - Set or report the current NFSv4 lease time 976262a0982SChuck Lever * 977262a0982SChuck Lever * Input: 978262a0982SChuck Lever * buf: ignored 979262a0982SChuck Lever * size: zero 980262a0982SChuck Lever * 981262a0982SChuck Lever * OR 982262a0982SChuck Lever * 983262a0982SChuck Lever * Input: 984262a0982SChuck Lever * buf: C string containing an unsigned 985262a0982SChuck Lever * integer value representing the new 986262a0982SChuck Lever * NFSv4 lease expiry time 987262a0982SChuck Lever * size: non-zero length of C string in @buf 988262a0982SChuck Lever * Output: 989262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 990262a0982SChuck Lever * string containing unsigned integer value of the 991262a0982SChuck Lever * current lease expiry time; 992262a0982SChuck Lever * return code is the size in bytes of the string 993262a0982SChuck Lever * On error: return code is zero or a negative errno value 994262a0982SChuck Lever */ 9953dd98a3bSJeff Layton static ssize_t write_leasetime(struct file *file, char *buf, size_t size) 9963dd98a3bSJeff Layton { 99711f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 99811f77942SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 9999dd9845fSStanislav Kinsbursky return nfsd4_write_time(file, buf, size, &nn->nfsd4_lease, nn); 10003dd98a3bSJeff Layton } 10013dd98a3bSJeff Layton 1002efc4bb4fSJ. Bruce Fields /** 1003efc4bb4fSJ. Bruce Fields * write_gracetime - Set or report current NFSv4 grace period time 1004efc4bb4fSJ. Bruce Fields * 1005efc4bb4fSJ. Bruce Fields * As above, but sets the time of the NFSv4 grace period. 1006efc4bb4fSJ. Bruce Fields * 1007efc4bb4fSJ. Bruce Fields * Note this should never be set to less than the *previous* 1008efc4bb4fSJ. Bruce Fields * lease-period time, but we don't try to enforce this. (In the common 1009efc4bb4fSJ. Bruce Fields * case (a new boot), we don't know what the previous lease time was 1010efc4bb4fSJ. Bruce Fields * anyway.) 1011efc4bb4fSJ. Bruce Fields */ 1012efc4bb4fSJ. Bruce Fields static ssize_t write_gracetime(struct file *file, char *buf, size_t size) 1013efc4bb4fSJ. Bruce Fields { 101411f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 101511f77942SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 10169dd9845fSStanislav Kinsbursky return nfsd4_write_time(file, buf, size, &nn->nfsd4_grace, nn); 1017efc4bb4fSJ. Bruce Fields } 1018efc4bb4fSJ. Bruce Fields 10199dd9845fSStanislav Kinsbursky static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size, 10209dd9845fSStanislav Kinsbursky struct nfsd_net *nn) 10210964a3d3SNeilBrown { 10220964a3d3SNeilBrown char *mesg = buf; 10230964a3d3SNeilBrown char *recdir; 10240964a3d3SNeilBrown int len, status; 10250964a3d3SNeilBrown 10263dd98a3bSJeff Layton if (size > 0) { 10279dd9845fSStanislav Kinsbursky if (nn->nfsd_serv) 10283dd98a3bSJeff Layton return -EBUSY; 10293dd98a3bSJeff Layton if (size > PATH_MAX || buf[size-1] != '\n') 10300964a3d3SNeilBrown return -EINVAL; 10310964a3d3SNeilBrown buf[size-1] = 0; 10320964a3d3SNeilBrown 10330964a3d3SNeilBrown recdir = mesg; 10340964a3d3SNeilBrown len = qword_get(&mesg, recdir, size); 10350964a3d3SNeilBrown if (len <= 0) 10360964a3d3SNeilBrown return -EINVAL; 10370964a3d3SNeilBrown 10380964a3d3SNeilBrown status = nfs4_reset_recoverydir(recdir); 103969049961SAndi Kleen if (status) 104069049961SAndi Kleen return status; 10413dd98a3bSJeff Layton } 10423d72ab8fSChuck Lever 10433d72ab8fSChuck Lever return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n", 10443d72ab8fSChuck Lever nfs4_recoverydir()); 10450964a3d3SNeilBrown } 10463dd98a3bSJeff Layton 1047262a0982SChuck Lever /** 1048262a0982SChuck Lever * write_recoverydir - Set or report the pathname of the recovery directory 1049262a0982SChuck Lever * 1050262a0982SChuck Lever * Input: 1051262a0982SChuck Lever * buf: ignored 1052262a0982SChuck Lever * size: zero 1053262a0982SChuck Lever * 1054262a0982SChuck Lever * OR 1055262a0982SChuck Lever * 1056262a0982SChuck Lever * Input: 1057262a0982SChuck Lever * buf: C string containing the pathname 1058262a0982SChuck Lever * of the directory on a local file 1059262a0982SChuck Lever * system containing permanent NFSv4 1060262a0982SChuck Lever * recovery data 1061262a0982SChuck Lever * size: non-zero length of C string in @buf 1062262a0982SChuck Lever * Output: 1063262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C string 1064262a0982SChuck Lever * containing the current recovery pathname setting; 1065262a0982SChuck Lever * return code is the size in bytes of the string 1066262a0982SChuck Lever * On error: return code is zero or a negative errno value 1067262a0982SChuck Lever */ 10683dd98a3bSJeff Layton static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) 10693dd98a3bSJeff Layton { 10703dd98a3bSJeff Layton ssize_t rv; 107111f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 107211f77942SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 10733dd98a3bSJeff Layton 10743dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 10759dd9845fSStanislav Kinsbursky rv = __write_recoverydir(file, buf, size, nn); 10763dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 10773dd98a3bSJeff Layton return rv; 10783dd98a3bSJeff Layton } 10793dd98a3bSJeff Layton 108070c3b76cSNeilBrown #endif 10810964a3d3SNeilBrown 10821da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 10831da177e4SLinus Torvalds /* 10841da177e4SLinus Torvalds * populating the filesystem. 10851da177e4SLinus Torvalds */ 10861da177e4SLinus Torvalds 10871da177e4SLinus Torvalds static int nfsd_fill_super(struct super_block * sb, void * data, int silent) 10881da177e4SLinus Torvalds { 10891da177e4SLinus Torvalds static struct tree_descr nfsd_files[] = { 109096d851c4SStanislav Kinsbursky [NFSD_List] = {"exports", &exports_nfsd_operations, S_IRUGO}, 1091e8e8753fSJ. Bruce Fields [NFSD_Export_features] = {"export_features", 1092e8e8753fSJ. Bruce Fields &export_features_operations, S_IRUGO}, 10934373ea84SWendy Cheng [NFSD_FO_UnlockIP] = {"unlock_ip", 10944373ea84SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 109517efa372SWendy Cheng [NFSD_FO_UnlockFS] = {"unlock_filesystem", 109617efa372SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 10971da177e4SLinus Torvalds [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, 10981da177e4SLinus Torvalds [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, 1099eed2965aSGreg Banks [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR}, 110003cf6c9fSGreg Banks [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO}, 1101a2f999a3SJeff Layton [NFSD_Reply_Cache_Stats] = {"reply_cache_stats", &reply_cache_stats_operations, S_IRUGO}, 110270c3b76cSNeilBrown [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, 110380212d59SNeilBrown [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, 1104596bbe53SNeilBrown [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO}, 1105*5b8db00bSJeff Layton [NFSD_MaxConnections] = {"max_connections", &transaction_ops, S_IWUSR|S_IRUGO}, 1106b084f598SJ. Bruce Fields #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) 1107b0b0c0a2SKevin Coffman [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO}, 1108b084f598SJ. Bruce Fields #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ 11091da177e4SLinus Torvalds #ifdef CONFIG_NFSD_V4 11101da177e4SLinus Torvalds [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, 1111efc4bb4fSJ. Bruce Fields [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR}, 11120964a3d3SNeilBrown [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, 11131da177e4SLinus Torvalds #endif 11141da177e4SLinus Torvalds /* last one */ {""} 11151da177e4SLinus Torvalds }; 111611f77942SStanislav Kinsbursky struct net *net = data; 111711f77942SStanislav Kinsbursky int ret; 111811f77942SStanislav Kinsbursky 111911f77942SStanislav Kinsbursky ret = simple_fill_super(sb, 0x6e667364, nfsd_files); 112011f77942SStanislav Kinsbursky if (ret) 112111f77942SStanislav Kinsbursky return ret; 112211f77942SStanislav Kinsbursky sb->s_fs_info = get_net(net); 112311f77942SStanislav Kinsbursky return 0; 11241da177e4SLinus Torvalds } 11251da177e4SLinus Torvalds 1126fc14f2feSAl Viro static struct dentry *nfsd_mount(struct file_system_type *fs_type, 1127fc14f2feSAl Viro int flags, const char *dev_name, void *data) 11281da177e4SLinus Torvalds { 112911f77942SStanislav Kinsbursky return mount_ns(fs_type, flags, current->nsproxy->net_ns, nfsd_fill_super); 113011f77942SStanislav Kinsbursky } 113111f77942SStanislav Kinsbursky 113211f77942SStanislav Kinsbursky static void nfsd_umount(struct super_block *sb) 113311f77942SStanislav Kinsbursky { 113411f77942SStanislav Kinsbursky struct net *net = sb->s_fs_info; 113511f77942SStanislav Kinsbursky 113611f77942SStanislav Kinsbursky kill_litter_super(sb); 113711f77942SStanislav Kinsbursky put_net(net); 11381da177e4SLinus Torvalds } 11391da177e4SLinus Torvalds 11401da177e4SLinus Torvalds static struct file_system_type nfsd_fs_type = { 11411da177e4SLinus Torvalds .owner = THIS_MODULE, 11421da177e4SLinus Torvalds .name = "nfsd", 1143fc14f2feSAl Viro .mount = nfsd_mount, 114411f77942SStanislav Kinsbursky .kill_sb = nfsd_umount, 11451da177e4SLinus Torvalds }; 11467f78e035SEric W. Biederman MODULE_ALIAS_FS("nfsd"); 11471da177e4SLinus Torvalds 1148e331f606SJ. Bruce Fields #ifdef CONFIG_PROC_FS 1149e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 1150e331f606SJ. Bruce Fields { 1151e331f606SJ. Bruce Fields struct proc_dir_entry *entry; 1152e331f606SJ. Bruce Fields 1153e331f606SJ. Bruce Fields entry = proc_mkdir("fs/nfs", NULL); 1154e331f606SJ. Bruce Fields if (!entry) 1155e331f606SJ. Bruce Fields return -ENOMEM; 115696d851c4SStanislav Kinsbursky entry = proc_create("exports", 0, entry, 115796d851c4SStanislav Kinsbursky &exports_proc_operations); 1158ff7c4b36Sfanchaoting if (!entry) { 1159ff7c4b36Sfanchaoting remove_proc_entry("fs/nfs", NULL); 1160e331f606SJ. Bruce Fields return -ENOMEM; 1161ff7c4b36Sfanchaoting } 1162e331f606SJ. Bruce Fields return 0; 1163e331f606SJ. Bruce Fields } 1164e331f606SJ. Bruce Fields #else /* CONFIG_PROC_FS */ 1165e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 1166e331f606SJ. Bruce Fields { 1167e331f606SJ. Bruce Fields return 0; 1168e331f606SJ. Bruce Fields } 1169e331f606SJ. Bruce Fields #endif 1170e331f606SJ. Bruce Fields 11717ea34ac1SJeff Layton int nfsd_net_id; 11725717e012SStanislav Kinsbursky 11735717e012SStanislav Kinsbursky static __net_init int nfsd_init_net(struct net *net) 11745717e012SStanislav Kinsbursky { 11755717e012SStanislav Kinsbursky int retval; 11763d733711SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 11775717e012SStanislav Kinsbursky 11785717e012SStanislav Kinsbursky retval = nfsd_export_init(net); 11795717e012SStanislav Kinsbursky if (retval) 11805717e012SStanislav Kinsbursky goto out_export_error; 1181f69adb2fSStanislav Kinsbursky retval = nfsd_idmap_init(net); 1182f69adb2fSStanislav Kinsbursky if (retval) 1183f69adb2fSStanislav Kinsbursky goto out_idmap_error; 11843d733711SStanislav Kinsbursky nn->nfsd4_lease = 90; /* default lease time */ 11855284b44eSStanislav Kinsbursky nn->nfsd4_grace = 90; 11865717e012SStanislav Kinsbursky return 0; 11875717e012SStanislav Kinsbursky 1188f69adb2fSStanislav Kinsbursky out_idmap_error: 1189f69adb2fSStanislav Kinsbursky nfsd_export_shutdown(net); 11905717e012SStanislav Kinsbursky out_export_error: 11915717e012SStanislav Kinsbursky return retval; 11925717e012SStanislav Kinsbursky } 11935717e012SStanislav Kinsbursky 11945717e012SStanislav Kinsbursky static __net_exit void nfsd_exit_net(struct net *net) 11955717e012SStanislav Kinsbursky { 1196f69adb2fSStanislav Kinsbursky nfsd_idmap_shutdown(net); 11975717e012SStanislav Kinsbursky nfsd_export_shutdown(net); 11985717e012SStanislav Kinsbursky } 11995717e012SStanislav Kinsbursky 12007ea34ac1SJeff Layton static struct pernet_operations nfsd_net_ops = { 12015717e012SStanislav Kinsbursky .init = nfsd_init_net, 12025717e012SStanislav Kinsbursky .exit = nfsd_exit_net, 12037ea34ac1SJeff Layton .id = &nfsd_net_id, 12047ea34ac1SJeff Layton .size = sizeof(struct nfsd_net), 12057ea34ac1SJeff Layton }; 12067ea34ac1SJeff Layton 12071da177e4SLinus Torvalds static int __init init_nfsd(void) 12081da177e4SLinus Torvalds { 12091da177e4SLinus Torvalds int retval; 12101da177e4SLinus Torvalds printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n"); 12111da177e4SLinus Torvalds 1212797a9d79SJeff Layton retval = register_cld_notifier(); 1213813fd320SJeff Layton if (retval) 1214813fd320SJeff Layton return retval; 12157ea34ac1SJeff Layton retval = register_pernet_subsys(&nfsd_net_ops); 12167ea34ac1SJeff Layton if (retval < 0) 1217813fd320SJeff Layton goto out_unregister_notifier; 121872083396SBryan Schumaker retval = nfsd4_init_slabs(); 1219e8ff2a84SJ. Bruce Fields if (retval) 12207ea34ac1SJeff Layton goto out_unregister_pernet; 122165178db4SBryan Schumaker retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */ 122265178db4SBryan Schumaker if (retval) 122365178db4SBryan Schumaker goto out_free_slabs; 12241da177e4SLinus Torvalds nfsd_stat_init(); /* Statistics */ 1225d5c3428bSJ. Bruce Fields retval = nfsd_reply_cache_init(); 1226d5c3428bSJ. Bruce Fields if (retval) 1227d5c3428bSJ. Bruce Fields goto out_free_stat; 12281da177e4SLinus Torvalds nfsd_lockd_init(); /* lockd->nfsd callbacks */ 1229e331f606SJ. Bruce Fields retval = create_proc_exports_entry(); 1230e331f606SJ. Bruce Fields if (retval) 1231f69adb2fSStanislav Kinsbursky goto out_free_lockd; 12321da177e4SLinus Torvalds retval = register_filesystem(&nfsd_fs_type); 123326808d3fSJ. Bruce Fields if (retval) 123426808d3fSJ. Bruce Fields goto out_free_all; 123526808d3fSJ. Bruce Fields return 0; 123626808d3fSJ. Bruce Fields out_free_all: 12371da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 12381da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 1239dbf847ecSJ. Bruce Fields out_free_lockd: 12401da177e4SLinus Torvalds nfsd_lockd_shutdown(); 1241e331f606SJ. Bruce Fields nfsd_reply_cache_shutdown(); 1242d5c3428bSJ. Bruce Fields out_free_stat: 1243d5c3428bSJ. Bruce Fields nfsd_stat_shutdown(); 124465178db4SBryan Schumaker nfsd_fault_inject_cleanup(); 124565178db4SBryan Schumaker out_free_slabs: 124646b25895SJ. Bruce Fields nfsd4_free_slabs(); 12477ea34ac1SJeff Layton out_unregister_pernet: 12487ea34ac1SJeff Layton unregister_pernet_subsys(&nfsd_net_ops); 1249813fd320SJeff Layton out_unregister_notifier: 1250797a9d79SJeff Layton unregister_cld_notifier(); 12511da177e4SLinus Torvalds return retval; 12521da177e4SLinus Torvalds } 12531da177e4SLinus Torvalds 12541da177e4SLinus Torvalds static void __exit exit_nfsd(void) 12551da177e4SLinus Torvalds { 1256d5c3428bSJ. Bruce Fields nfsd_reply_cache_shutdown(); 12571da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 12581da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 12591da177e4SLinus Torvalds nfsd_stat_shutdown(); 12601da177e4SLinus Torvalds nfsd_lockd_shutdown(); 1261e8ff2a84SJ. Bruce Fields nfsd4_free_slabs(); 126265178db4SBryan Schumaker nfsd_fault_inject_cleanup(); 12631da177e4SLinus Torvalds unregister_filesystem(&nfsd_fs_type); 12647ea34ac1SJeff Layton unregister_pernet_subsys(&nfsd_net_ops); 1265797a9d79SJeff Layton unregister_cld_notifier(); 12661da177e4SLinus Torvalds } 12671da177e4SLinus Torvalds 12681da177e4SLinus Torvalds MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); 12691da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 12701da177e4SLinus Torvalds module_init(init_nfsd) 12711da177e4SLinus Torvalds module_exit(exit_nfsd) 1272