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, 42b0b0c0a2SKevin Coffman NFSD_SupportedEnctypes, 4370c3b76cSNeilBrown /* 4470c3b76cSNeilBrown * The below MUST come last. Otherwise we leave a hole in nfsd_files[] 4570c3b76cSNeilBrown * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops 4670c3b76cSNeilBrown */ 4770c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 481da177e4SLinus Torvalds NFSD_Leasetime, 49efc4bb4fSJ. Bruce Fields NFSD_Gracetime, 500964a3d3SNeilBrown NFSD_RecoveryDir, 5170c3b76cSNeilBrown #endif 521da177e4SLinus Torvalds }; 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds /* 551da177e4SLinus Torvalds * write() for these nodes. 561da177e4SLinus Torvalds */ 571da177e4SLinus Torvalds static ssize_t write_filehandle(struct file *file, char *buf, size_t size); 58b046ccdcSChuck Lever static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size); 59b046ccdcSChuck Lever static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size); 601da177e4SLinus Torvalds static ssize_t write_threads(struct file *file, char *buf, size_t size); 61eed2965aSGreg Banks static ssize_t write_pool_threads(struct file *file, char *buf, size_t size); 6270c3b76cSNeilBrown static ssize_t write_versions(struct file *file, char *buf, size_t size); 6380212d59SNeilBrown static ssize_t write_ports(struct file *file, char *buf, size_t size); 64596bbe53SNeilBrown static ssize_t write_maxblksize(struct file *file, char *buf, size_t size); 6570c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 661da177e4SLinus Torvalds static ssize_t write_leasetime(struct file *file, char *buf, size_t size); 67efc4bb4fSJ. Bruce Fields static ssize_t write_gracetime(struct file *file, char *buf, size_t size); 680964a3d3SNeilBrown static ssize_t write_recoverydir(struct file *file, char *buf, size_t size); 6970c3b76cSNeilBrown #endif 701da177e4SLinus Torvalds 711da177e4SLinus Torvalds static ssize_t (*write_op[])(struct file *, char *, size_t) = { 721da177e4SLinus Torvalds [NFSD_Fh] = write_filehandle, 73b046ccdcSChuck Lever [NFSD_FO_UnlockIP] = write_unlock_ip, 74b046ccdcSChuck Lever [NFSD_FO_UnlockFS] = write_unlock_fs, 751da177e4SLinus Torvalds [NFSD_Threads] = write_threads, 76eed2965aSGreg Banks [NFSD_Pool_Threads] = write_pool_threads, 7770c3b76cSNeilBrown [NFSD_Versions] = write_versions, 7880212d59SNeilBrown [NFSD_Ports] = write_ports, 79596bbe53SNeilBrown [NFSD_MaxBlkSize] = write_maxblksize, 8070c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 811da177e4SLinus Torvalds [NFSD_Leasetime] = write_leasetime, 82efc4bb4fSJ. Bruce Fields [NFSD_Gracetime] = write_gracetime, 830964a3d3SNeilBrown [NFSD_RecoveryDir] = write_recoverydir, 8470c3b76cSNeilBrown #endif 851da177e4SLinus Torvalds }; 861da177e4SLinus Torvalds 871da177e4SLinus Torvalds static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos) 881da177e4SLinus Torvalds { 89496ad9aaSAl Viro ino_t ino = file_inode(file)->i_ino; 901da177e4SLinus Torvalds char *data; 911da177e4SLinus Torvalds ssize_t rv; 921da177e4SLinus Torvalds 93e8c96f8cSTobias Klauser if (ino >= ARRAY_SIZE(write_op) || !write_op[ino]) 941da177e4SLinus Torvalds return -EINVAL; 951da177e4SLinus Torvalds 961da177e4SLinus Torvalds data = simple_transaction_get(file, buf, size); 971da177e4SLinus Torvalds if (IS_ERR(data)) 981da177e4SLinus Torvalds return PTR_ERR(data); 991da177e4SLinus Torvalds 1001da177e4SLinus Torvalds rv = write_op[ino](file, data, size); 1018971a101SNeilBrown if (rv >= 0) { 1021da177e4SLinus Torvalds simple_transaction_set(file, rv); 1031da177e4SLinus Torvalds rv = size; 1041da177e4SLinus Torvalds } 1051da177e4SLinus Torvalds return rv; 1061da177e4SLinus Torvalds } 1071da177e4SLinus Torvalds 1087390022dSNeilBrown static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos) 1097390022dSNeilBrown { 1107390022dSNeilBrown if (! file->private_data) { 1117390022dSNeilBrown /* An attempt to read a transaction file without writing 1127390022dSNeilBrown * causes a 0-byte write so that the file can return 1137390022dSNeilBrown * state information 1147390022dSNeilBrown */ 1157390022dSNeilBrown ssize_t rv = nfsctl_transaction_write(file, buf, 0, pos); 1167390022dSNeilBrown if (rv < 0) 1177390022dSNeilBrown return rv; 1187390022dSNeilBrown } 1197390022dSNeilBrown return simple_transaction_read(file, buf, size, pos); 1207390022dSNeilBrown } 1217390022dSNeilBrown 1224b6f5d20SArjan van de Ven static const struct file_operations transaction_ops = { 1231da177e4SLinus Torvalds .write = nfsctl_transaction_write, 1247390022dSNeilBrown .read = nfsctl_transaction_read, 1251da177e4SLinus Torvalds .release = simple_transaction_release, 1266038f373SArnd Bergmann .llseek = default_llseek, 1271da177e4SLinus Torvalds }; 1281da177e4SLinus Torvalds 12996d851c4SStanislav Kinsbursky static int exports_net_open(struct net *net, struct file *file) 1301da177e4SLinus Torvalds { 131f2c7ea10SStanislav Kinsbursky int err; 132f2c7ea10SStanislav Kinsbursky struct seq_file *seq; 13396d851c4SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 134f2c7ea10SStanislav Kinsbursky 135f2c7ea10SStanislav Kinsbursky err = seq_open(file, &nfs_exports_op); 136f2c7ea10SStanislav Kinsbursky if (err) 137f2c7ea10SStanislav Kinsbursky return err; 138f2c7ea10SStanislav Kinsbursky 139f2c7ea10SStanislav Kinsbursky seq = file->private_data; 140e5f06f72SStanislav Kinsbursky seq->private = nn->svc_export_cache; 141f2c7ea10SStanislav Kinsbursky return 0; 1421da177e4SLinus Torvalds } 1431da177e4SLinus Torvalds 14496d851c4SStanislav Kinsbursky static int exports_proc_open(struct inode *inode, struct file *file) 14596d851c4SStanislav Kinsbursky { 14696d851c4SStanislav Kinsbursky return exports_net_open(current->nsproxy->net_ns, file); 14796d851c4SStanislav Kinsbursky } 14896d851c4SStanislav Kinsbursky 14996d851c4SStanislav Kinsbursky static const struct file_operations exports_proc_operations = { 15096d851c4SStanislav Kinsbursky .open = exports_proc_open, 15196d851c4SStanislav Kinsbursky .read = seq_read, 15296d851c4SStanislav Kinsbursky .llseek = seq_lseek, 15396d851c4SStanislav Kinsbursky .release = seq_release, 15496d851c4SStanislav Kinsbursky .owner = THIS_MODULE, 15596d851c4SStanislav Kinsbursky }; 15696d851c4SStanislav Kinsbursky 15796d851c4SStanislav Kinsbursky static int exports_nfsd_open(struct inode *inode, struct file *file) 15896d851c4SStanislav Kinsbursky { 15996d851c4SStanislav Kinsbursky return exports_net_open(inode->i_sb->s_fs_info, file); 16096d851c4SStanislav Kinsbursky } 16196d851c4SStanislav Kinsbursky 16296d851c4SStanislav Kinsbursky static const struct file_operations exports_nfsd_operations = { 16396d851c4SStanislav Kinsbursky .open = exports_nfsd_open, 1641da177e4SLinus Torvalds .read = seq_read, 1651da177e4SLinus Torvalds .llseek = seq_lseek, 1661da177e4SLinus Torvalds .release = seq_release, 1679ef2db26SDenis V. Lunev .owner = THIS_MODULE, 1681da177e4SLinus Torvalds }; 1691da177e4SLinus Torvalds 170e8e8753fSJ. Bruce Fields static int export_features_show(struct seq_file *m, void *v) 171e8e8753fSJ. Bruce Fields { 172e8e8753fSJ. Bruce Fields seq_printf(m, "0x%x 0x%x\n", NFSEXP_ALLFLAGS, NFSEXP_SECINFO_FLAGS); 173e8e8753fSJ. Bruce Fields return 0; 174e8e8753fSJ. Bruce Fields } 175e8e8753fSJ. Bruce Fields 176e8e8753fSJ. Bruce Fields static int export_features_open(struct inode *inode, struct file *file) 177e8e8753fSJ. Bruce Fields { 178e8e8753fSJ. Bruce Fields return single_open(file, export_features_show, NULL); 179e8e8753fSJ. Bruce Fields } 180e8e8753fSJ. Bruce Fields 18175ef9de1SAl Viro static const struct file_operations export_features_operations = { 182e8e8753fSJ. Bruce Fields .open = export_features_open, 183e8e8753fSJ. Bruce Fields .read = seq_read, 184e8e8753fSJ. Bruce Fields .llseek = seq_lseek, 185e8e8753fSJ. Bruce Fields .release = single_release, 186e8e8753fSJ. Bruce Fields }; 187e8e8753fSJ. Bruce Fields 188b084f598SJ. Bruce Fields #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) 189b0b0c0a2SKevin Coffman static int supported_enctypes_show(struct seq_file *m, void *v) 190b0b0c0a2SKevin Coffman { 191b084f598SJ. Bruce Fields seq_printf(m, KRB5_SUPPORTED_ENCTYPES); 192b0b0c0a2SKevin Coffman return 0; 193b0b0c0a2SKevin Coffman } 194b0b0c0a2SKevin Coffman 195b0b0c0a2SKevin Coffman static int supported_enctypes_open(struct inode *inode, struct file *file) 196b0b0c0a2SKevin Coffman { 197b0b0c0a2SKevin Coffman return single_open(file, supported_enctypes_show, NULL); 198b0b0c0a2SKevin Coffman } 199b0b0c0a2SKevin Coffman 20075ef9de1SAl Viro static const struct file_operations supported_enctypes_ops = { 201b0b0c0a2SKevin Coffman .open = supported_enctypes_open, 202b0b0c0a2SKevin Coffman .read = seq_read, 203b0b0c0a2SKevin Coffman .llseek = seq_lseek, 204b0b0c0a2SKevin Coffman .release = single_release, 205b0b0c0a2SKevin Coffman }; 206b084f598SJ. Bruce Fields #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ 207b0b0c0a2SKevin Coffman 208828c0950SAlexey Dobriyan static const struct file_operations pool_stats_operations = { 20903cf6c9fSGreg Banks .open = nfsd_pool_stats_open, 21003cf6c9fSGreg Banks .read = seq_read, 21103cf6c9fSGreg Banks .llseek = seq_lseek, 212ed2d8aedSRyusei Yamaguchi .release = nfsd_pool_stats_release, 21303cf6c9fSGreg Banks .owner = THIS_MODULE, 21403cf6c9fSGreg Banks }; 21503cf6c9fSGreg Banks 216a2f999a3SJeff Layton static struct file_operations reply_cache_stats_operations = { 217a2f999a3SJeff Layton .open = nfsd_reply_cache_stats_open, 218a2f999a3SJeff Layton .read = seq_read, 219a2f999a3SJeff Layton .llseek = seq_lseek, 220a2f999a3SJeff Layton .release = single_release, 221a2f999a3SJeff Layton }; 222a2f999a3SJeff Layton 2231da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 2241da177e4SLinus Torvalds /* 2251da177e4SLinus Torvalds * payload - write methods 2261da177e4SLinus Torvalds */ 2271da177e4SLinus Torvalds 2281da177e4SLinus Torvalds 229262a0982SChuck Lever /** 230262a0982SChuck Lever * write_unlock_ip - Release all locks used by a client 231262a0982SChuck Lever * 232262a0982SChuck Lever * Experimental. 233262a0982SChuck Lever * 234262a0982SChuck Lever * Input: 235262a0982SChuck Lever * buf: '\n'-terminated C string containing a 2364116092bSChuck Lever * presentation format IP address 237262a0982SChuck Lever * size: length of C string in @buf 238262a0982SChuck Lever * Output: 239262a0982SChuck Lever * On success: returns zero if all specified locks were released; 240262a0982SChuck Lever * returns one if one or more locks were not released 241262a0982SChuck Lever * On error: return code is negative errno value 242262a0982SChuck Lever */ 243b046ccdcSChuck Lever static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size) 2444373ea84SWendy Cheng { 2454116092bSChuck Lever struct sockaddr_storage address; 2464116092bSChuck Lever struct sockaddr *sap = (struct sockaddr *)&address; 2474116092bSChuck Lever size_t salen = sizeof(address); 248367c8c7bSChuck Lever char *fo_path; 24911f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 2504373ea84SWendy Cheng 2514373ea84SWendy Cheng /* sanity check */ 2524373ea84SWendy Cheng if (size == 0) 2534373ea84SWendy Cheng return -EINVAL; 2544373ea84SWendy Cheng 2554373ea84SWendy Cheng if (buf[size-1] != '\n') 2564373ea84SWendy Cheng return -EINVAL; 2574373ea84SWendy Cheng 2584373ea84SWendy Cheng fo_path = buf; 2594373ea84SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 2604373ea84SWendy Cheng return -EINVAL; 2614373ea84SWendy Cheng 26211f77942SStanislav Kinsbursky if (rpc_pton(net, fo_path, size, sap, salen) == 0) 2634373ea84SWendy Cheng return -EINVAL; 2644373ea84SWendy Cheng 2654116092bSChuck Lever return nlmsvc_unlock_all_by_ip(sap); 2664373ea84SWendy Cheng } 2674373ea84SWendy Cheng 268262a0982SChuck Lever /** 269262a0982SChuck Lever * write_unlock_fs - Release all locks on a local file system 270262a0982SChuck Lever * 271262a0982SChuck Lever * Experimental. 272262a0982SChuck Lever * 273262a0982SChuck Lever * Input: 274262a0982SChuck Lever * buf: '\n'-terminated C string containing the 275262a0982SChuck Lever * absolute pathname of a local file system 276262a0982SChuck Lever * size: length of C string in @buf 277262a0982SChuck Lever * Output: 278262a0982SChuck Lever * On success: returns zero if all specified locks were released; 279262a0982SChuck Lever * returns one if one or more locks were not released 280262a0982SChuck Lever * On error: return code is negative errno value 281262a0982SChuck Lever */ 282b046ccdcSChuck Lever static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size) 28317efa372SWendy Cheng { 284a63bb996SAl Viro struct path path; 28517efa372SWendy Cheng char *fo_path; 28617efa372SWendy Cheng int error; 28717efa372SWendy Cheng 28817efa372SWendy Cheng /* sanity check */ 28917efa372SWendy Cheng if (size == 0) 29017efa372SWendy Cheng return -EINVAL; 29117efa372SWendy Cheng 29217efa372SWendy Cheng if (buf[size-1] != '\n') 29317efa372SWendy Cheng return -EINVAL; 29417efa372SWendy Cheng 29517efa372SWendy Cheng fo_path = buf; 29617efa372SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 29717efa372SWendy Cheng return -EINVAL; 29817efa372SWendy Cheng 299a63bb996SAl Viro error = kern_path(fo_path, 0, &path); 30017efa372SWendy Cheng if (error) 30117efa372SWendy Cheng return error; 30217efa372SWendy Cheng 303262a0982SChuck Lever /* 304262a0982SChuck Lever * XXX: Needs better sanity checking. Otherwise we could end up 305262a0982SChuck Lever * releasing locks on the wrong file system. 306262a0982SChuck Lever * 307262a0982SChuck Lever * For example: 308262a0982SChuck Lever * 1. Does the path refer to a directory? 309262a0982SChuck Lever * 2. Is that directory a mount point, or 310262a0982SChuck Lever * 3. Is that directory the root of an exported file system? 311262a0982SChuck Lever */ 312d8c9584eSAl Viro error = nlmsvc_unlock_all_by_sb(path.dentry->d_sb); 31317efa372SWendy Cheng 314a63bb996SAl Viro path_put(&path); 31517efa372SWendy Cheng return error; 31617efa372SWendy Cheng } 31717efa372SWendy Cheng 318262a0982SChuck Lever /** 319262a0982SChuck Lever * write_filehandle - Get a variable-length NFS file handle by path 320262a0982SChuck Lever * 321262a0982SChuck Lever * On input, the buffer contains a '\n'-terminated C string comprised of 322262a0982SChuck Lever * three alphanumeric words separated by whitespace. The string may 323262a0982SChuck Lever * contain escape sequences. 324262a0982SChuck Lever * 325262a0982SChuck Lever * Input: 326262a0982SChuck Lever * buf: 327262a0982SChuck Lever * domain: client domain name 328262a0982SChuck Lever * path: export pathname 329262a0982SChuck Lever * maxsize: numeric maximum size of 330262a0982SChuck Lever * @buf 331262a0982SChuck Lever * size: length of C string in @buf 332262a0982SChuck Lever * Output: 333262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 334262a0982SChuck Lever * string containing a ASCII hex text version 335262a0982SChuck Lever * of the NFS file handle; 336262a0982SChuck Lever * return code is the size in bytes of the string 337262a0982SChuck Lever * On error: return code is negative errno value 338262a0982SChuck Lever */ 3391da177e4SLinus Torvalds static ssize_t write_filehandle(struct file *file, char *buf, size_t size) 3401da177e4SLinus Torvalds { 3411da177e4SLinus Torvalds char *dname, *path; 342246d95baSAndrew Morton int uninitialized_var(maxsize); 3431da177e4SLinus Torvalds char *mesg = buf; 3441da177e4SLinus Torvalds int len; 3451da177e4SLinus Torvalds struct auth_domain *dom; 3461da177e4SLinus Torvalds struct knfsd_fh fh; 34711f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 3481da177e4SLinus Torvalds 34987d26ea7SJ. Bruce Fields if (size == 0) 35087d26ea7SJ. Bruce Fields return -EINVAL; 35187d26ea7SJ. Bruce Fields 3521da177e4SLinus Torvalds if (buf[size-1] != '\n') 3531da177e4SLinus Torvalds return -EINVAL; 3541da177e4SLinus Torvalds buf[size-1] = 0; 3551da177e4SLinus Torvalds 3561da177e4SLinus Torvalds dname = mesg; 3571da177e4SLinus Torvalds len = qword_get(&mesg, dname, size); 35854224f04SChuck Lever if (len <= 0) 35954224f04SChuck Lever return -EINVAL; 3601da177e4SLinus Torvalds 3611da177e4SLinus Torvalds path = dname+len+1; 3621da177e4SLinus Torvalds len = qword_get(&mesg, path, size); 36354224f04SChuck Lever if (len <= 0) 36454224f04SChuck Lever return -EINVAL; 3651da177e4SLinus Torvalds 3661da177e4SLinus Torvalds len = get_int(&mesg, &maxsize); 3671da177e4SLinus Torvalds if (len) 3681da177e4SLinus Torvalds return len; 3691da177e4SLinus Torvalds 3701da177e4SLinus Torvalds if (maxsize < NFS_FHSIZE) 3711da177e4SLinus Torvalds return -EINVAL; 372*3c7aa15dSKinglong Mee maxsize = min(maxsize, NFS3_FHSIZE); 3731da177e4SLinus Torvalds 3741da177e4SLinus Torvalds if (qword_get(&mesg, mesg, size)>0) 3751da177e4SLinus Torvalds return -EINVAL; 3761da177e4SLinus Torvalds 3771da177e4SLinus Torvalds /* we have all the words, they are in buf.. */ 3781da177e4SLinus Torvalds dom = unix_domain_find(dname); 3791da177e4SLinus Torvalds if (!dom) 3801da177e4SLinus Torvalds return -ENOMEM; 3811da177e4SLinus Torvalds 38211f77942SStanislav Kinsbursky len = exp_rootfh(net, dom, path, &fh, maxsize); 3831da177e4SLinus Torvalds auth_domain_put(dom); 3841da177e4SLinus Torvalds if (len) 3851da177e4SLinus Torvalds return len; 3861da177e4SLinus Torvalds 38754224f04SChuck Lever mesg = buf; 38854224f04SChuck Lever len = SIMPLE_TRANSACTION_LIMIT; 3891da177e4SLinus Torvalds qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size); 3901da177e4SLinus Torvalds mesg[-1] = '\n'; 3911da177e4SLinus Torvalds return mesg - buf; 3921da177e4SLinus Torvalds } 3931da177e4SLinus Torvalds 394262a0982SChuck Lever /** 395262a0982SChuck Lever * write_threads - Start NFSD, or report the current number of running threads 396262a0982SChuck Lever * 397262a0982SChuck Lever * Input: 398262a0982SChuck Lever * buf: ignored 399262a0982SChuck Lever * size: zero 400262a0982SChuck Lever * Output: 401262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 402262a0982SChuck Lever * string numeric value representing the number of 403262a0982SChuck Lever * running NFSD threads; 404262a0982SChuck Lever * return code is the size in bytes of the string 405262a0982SChuck Lever * On error: return code is zero 406262a0982SChuck Lever * 407262a0982SChuck Lever * OR 408262a0982SChuck Lever * 409262a0982SChuck Lever * Input: 410262a0982SChuck Lever * buf: C string containing an unsigned 411262a0982SChuck Lever * integer value representing the 412262a0982SChuck Lever * number of NFSD threads to start 413262a0982SChuck Lever * size: non-zero length of C string in @buf 414262a0982SChuck Lever * Output: 415262a0982SChuck Lever * On success: NFS service is started; 416262a0982SChuck Lever * passed-in buffer filled with '\n'-terminated C 417262a0982SChuck Lever * string numeric value representing the number of 418262a0982SChuck Lever * running NFSD threads; 419262a0982SChuck Lever * return code is the size in bytes of the string 420262a0982SChuck Lever * On error: return code is zero or a negative errno value 421262a0982SChuck Lever */ 4221da177e4SLinus Torvalds static ssize_t write_threads(struct file *file, char *buf, size_t size) 4231da177e4SLinus Torvalds { 4241da177e4SLinus Torvalds char *mesg = buf; 4251da177e4SLinus Torvalds int rv; 42611f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 427d41a9417SStanislav Kinsbursky 4281da177e4SLinus Torvalds if (size > 0) { 4291da177e4SLinus Torvalds int newthreads; 4301da177e4SLinus Torvalds rv = get_int(&mesg, &newthreads); 4311da177e4SLinus Torvalds if (rv) 4321da177e4SLinus Torvalds return rv; 4331da177e4SLinus Torvalds if (newthreads < 0) 4341da177e4SLinus Torvalds return -EINVAL; 435d41a9417SStanislav Kinsbursky rv = nfsd_svc(newthreads, net); 43682e12fe9SNeilBrown if (rv < 0) 4371da177e4SLinus Torvalds return rv; 43882e12fe9SNeilBrown } else 4399dd9845fSStanislav Kinsbursky rv = nfsd_nrthreads(net); 440e06b6405SChuck Lever 44182e12fe9SNeilBrown return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv); 4421da177e4SLinus Torvalds } 4431da177e4SLinus Torvalds 444262a0982SChuck Lever /** 445262a0982SChuck Lever * write_pool_threads - Set or report the current number of threads per pool 446262a0982SChuck Lever * 447262a0982SChuck Lever * Input: 448262a0982SChuck Lever * buf: ignored 449262a0982SChuck Lever * size: zero 450262a0982SChuck Lever * 451262a0982SChuck Lever * OR 452262a0982SChuck Lever * 453262a0982SChuck Lever * Input: 454262a0982SChuck Lever * buf: C string containing whitespace- 455262a0982SChuck Lever * separated unsigned integer values 456262a0982SChuck Lever * representing the number of NFSD 457262a0982SChuck Lever * threads to start in each pool 458262a0982SChuck Lever * size: non-zero length of C string in @buf 459262a0982SChuck Lever * Output: 460262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 461262a0982SChuck Lever * string containing integer values representing the 462262a0982SChuck Lever * number of NFSD threads in each pool; 463262a0982SChuck Lever * return code is the size in bytes of the string 464262a0982SChuck Lever * On error: return code is zero or a negative errno value 465262a0982SChuck Lever */ 466eed2965aSGreg Banks static ssize_t write_pool_threads(struct file *file, char *buf, size_t size) 467eed2965aSGreg Banks { 468eed2965aSGreg Banks /* if size > 0, look for an array of number of threads per node 469eed2965aSGreg Banks * and apply them then write out number of threads per node as reply 470eed2965aSGreg Banks */ 471eed2965aSGreg Banks char *mesg = buf; 472eed2965aSGreg Banks int i; 473eed2965aSGreg Banks int rv; 474eed2965aSGreg Banks int len; 475bedbdd8bSNeil Brown int npools; 476eed2965aSGreg Banks int *nthreads; 47711f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 478eed2965aSGreg Banks 479bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 4809dd9845fSStanislav Kinsbursky npools = nfsd_nrpools(net); 481eed2965aSGreg Banks if (npools == 0) { 482eed2965aSGreg Banks /* 483eed2965aSGreg Banks * NFS is shut down. The admin can start it by 484eed2965aSGreg Banks * writing to the threads file but NOT the pool_threads 485eed2965aSGreg Banks * file, sorry. Report zero threads. 486eed2965aSGreg Banks */ 487bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 488eed2965aSGreg Banks strcpy(buf, "0\n"); 489eed2965aSGreg Banks return strlen(buf); 490eed2965aSGreg Banks } 491eed2965aSGreg Banks 492eed2965aSGreg Banks nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL); 493bedbdd8bSNeil Brown rv = -ENOMEM; 494eed2965aSGreg Banks if (nthreads == NULL) 495bedbdd8bSNeil Brown goto out_free; 496eed2965aSGreg Banks 497eed2965aSGreg Banks if (size > 0) { 498eed2965aSGreg Banks for (i = 0; i < npools; i++) { 499eed2965aSGreg Banks rv = get_int(&mesg, &nthreads[i]); 500eed2965aSGreg Banks if (rv == -ENOENT) 501eed2965aSGreg Banks break; /* fewer numbers than pools */ 502eed2965aSGreg Banks if (rv) 503eed2965aSGreg Banks goto out_free; /* syntax error */ 504eed2965aSGreg Banks rv = -EINVAL; 505eed2965aSGreg Banks if (nthreads[i] < 0) 506eed2965aSGreg Banks goto out_free; 507eed2965aSGreg Banks } 5083938a0d5SStanislav Kinsbursky rv = nfsd_set_nrthreads(i, nthreads, net); 509eed2965aSGreg Banks if (rv) 510eed2965aSGreg Banks goto out_free; 511eed2965aSGreg Banks } 512eed2965aSGreg Banks 5139dd9845fSStanislav Kinsbursky rv = nfsd_get_nrthreads(npools, nthreads, net); 514eed2965aSGreg Banks if (rv) 515eed2965aSGreg Banks goto out_free; 516eed2965aSGreg Banks 517eed2965aSGreg Banks mesg = buf; 518eed2965aSGreg Banks size = SIMPLE_TRANSACTION_LIMIT; 519eed2965aSGreg Banks for (i = 0; i < npools && size > 0; i++) { 520eed2965aSGreg Banks snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' ')); 521eed2965aSGreg Banks len = strlen(mesg); 522eed2965aSGreg Banks size -= len; 523eed2965aSGreg Banks mesg += len; 524eed2965aSGreg Banks } 525413d63d7SJ. Bruce Fields rv = mesg - buf; 526eed2965aSGreg Banks out_free: 527eed2965aSGreg Banks kfree(nthreads); 528bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 529eed2965aSGreg Banks return rv; 530eed2965aSGreg Banks } 531eed2965aSGreg Banks 5323dd98a3bSJeff Layton static ssize_t __write_versions(struct file *file, char *buf, size_t size) 53370c3b76cSNeilBrown { 53470c3b76cSNeilBrown char *mesg = buf; 5358daf220aSBenny Halevy char *vers, *minorp, sign; 536261758b5SChuck Lever int len, num, remaining; 5378daf220aSBenny Halevy unsigned minor; 53870c3b76cSNeilBrown ssize_t tlen = 0; 53970c3b76cSNeilBrown char *sep; 54011f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 5419dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 54270c3b76cSNeilBrown 54370c3b76cSNeilBrown if (size>0) { 5449dd9845fSStanislav Kinsbursky if (nn->nfsd_serv) 5456658d3a7SNeilBrown /* Cannot change versions without updating 5469dd9845fSStanislav Kinsbursky * nn->nfsd_serv->sv_xdrsize, and reallocing 5476658d3a7SNeilBrown * rq_argp and rq_resp 5486658d3a7SNeilBrown */ 54970c3b76cSNeilBrown return -EBUSY; 55070c3b76cSNeilBrown if (buf[size-1] != '\n') 55170c3b76cSNeilBrown return -EINVAL; 55270c3b76cSNeilBrown buf[size-1] = 0; 55370c3b76cSNeilBrown 55470c3b76cSNeilBrown vers = mesg; 55570c3b76cSNeilBrown len = qword_get(&mesg, vers, size); 55670c3b76cSNeilBrown if (len <= 0) return -EINVAL; 55770c3b76cSNeilBrown do { 55870c3b76cSNeilBrown sign = *vers; 55970c3b76cSNeilBrown if (sign == '+' || sign == '-') 5608daf220aSBenny Halevy num = simple_strtol((vers+1), &minorp, 0); 56170c3b76cSNeilBrown else 5628daf220aSBenny Halevy num = simple_strtol(vers, &minorp, 0); 5638daf220aSBenny Halevy if (*minorp == '.') { 564ff89be87SJ. Bruce Fields if (num != 4) 5658daf220aSBenny Halevy return -EINVAL; 5668daf220aSBenny Halevy minor = simple_strtoul(minorp+1, NULL, 0); 5678daf220aSBenny Halevy if (minor == 0) 5688daf220aSBenny Halevy return -EINVAL; 5698daf220aSBenny Halevy if (nfsd_minorversion(minor, sign == '-' ? 5708daf220aSBenny Halevy NFSD_CLEAR : NFSD_SET) < 0) 5718daf220aSBenny Halevy return -EINVAL; 5728daf220aSBenny Halevy goto next; 5738daf220aSBenny Halevy } 57470c3b76cSNeilBrown switch(num) { 57570c3b76cSNeilBrown case 2: 57670c3b76cSNeilBrown case 3: 57770c3b76cSNeilBrown case 4: 5786658d3a7SNeilBrown nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET); 57970c3b76cSNeilBrown break; 58070c3b76cSNeilBrown default: 58170c3b76cSNeilBrown return -EINVAL; 58270c3b76cSNeilBrown } 5838daf220aSBenny Halevy next: 58470c3b76cSNeilBrown vers += len + 1; 58570c3b76cSNeilBrown } while ((len = qword_get(&mesg, vers, size)) > 0); 58670c3b76cSNeilBrown /* If all get turned off, turn them back on, as 58770c3b76cSNeilBrown * having no versions is BAD 58870c3b76cSNeilBrown */ 5896658d3a7SNeilBrown nfsd_reset_versions(); 59070c3b76cSNeilBrown } 591261758b5SChuck Lever 59270c3b76cSNeilBrown /* Now write current state into reply buffer */ 59370c3b76cSNeilBrown len = 0; 59470c3b76cSNeilBrown sep = ""; 595261758b5SChuck Lever remaining = SIMPLE_TRANSACTION_LIMIT; 59670c3b76cSNeilBrown for (num=2 ; num <= 4 ; num++) 5976658d3a7SNeilBrown if (nfsd_vers(num, NFSD_AVAIL)) { 598261758b5SChuck Lever len = snprintf(buf, remaining, "%s%c%d", sep, 5996658d3a7SNeilBrown nfsd_vers(num, NFSD_TEST)?'+':'-', 60070c3b76cSNeilBrown num); 60170c3b76cSNeilBrown sep = " "; 602261758b5SChuck Lever 603261758b5SChuck Lever if (len > remaining) 604261758b5SChuck Lever break; 605261758b5SChuck Lever remaining -= len; 606261758b5SChuck Lever buf += len; 607261758b5SChuck Lever tlen += len; 60870c3b76cSNeilBrown } 6098daf220aSBenny Halevy if (nfsd_vers(4, NFSD_AVAIL)) 610261758b5SChuck Lever for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; 611261758b5SChuck Lever minor++) { 612261758b5SChuck Lever len = snprintf(buf, remaining, " %c4.%u", 6138daf220aSBenny Halevy (nfsd_vers(4, NFSD_TEST) && 6148daf220aSBenny Halevy nfsd_minorversion(minor, NFSD_TEST)) ? 6158daf220aSBenny Halevy '+' : '-', 6168daf220aSBenny Halevy minor); 617261758b5SChuck Lever 618261758b5SChuck Lever if (len > remaining) 619261758b5SChuck Lever break; 620261758b5SChuck Lever remaining -= len; 621261758b5SChuck Lever buf += len; 622261758b5SChuck Lever tlen += len; 623261758b5SChuck Lever } 624261758b5SChuck Lever 625261758b5SChuck Lever len = snprintf(buf, remaining, "\n"); 626261758b5SChuck Lever if (len > remaining) 627261758b5SChuck Lever return -EINVAL; 628261758b5SChuck Lever return tlen + len; 62970c3b76cSNeilBrown } 63070c3b76cSNeilBrown 631262a0982SChuck Lever /** 632262a0982SChuck Lever * write_versions - Set or report the available NFS protocol versions 633262a0982SChuck Lever * 634262a0982SChuck Lever * Input: 635262a0982SChuck Lever * buf: ignored 636262a0982SChuck Lever * size: zero 637262a0982SChuck Lever * Output: 638262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 639262a0982SChuck Lever * string containing positive or negative integer 640262a0982SChuck Lever * values representing the current status of each 641262a0982SChuck Lever * protocol version; 642262a0982SChuck Lever * return code is the size in bytes of the string 643262a0982SChuck Lever * On error: return code is zero or a negative errno value 644262a0982SChuck Lever * 645262a0982SChuck Lever * OR 646262a0982SChuck Lever * 647262a0982SChuck Lever * Input: 648262a0982SChuck Lever * buf: C string containing whitespace- 649262a0982SChuck Lever * separated positive or negative 650262a0982SChuck Lever * integer values representing NFS 651262a0982SChuck Lever * protocol versions to enable ("+n") 652262a0982SChuck Lever * or disable ("-n") 653262a0982SChuck Lever * size: non-zero length of C string in @buf 654262a0982SChuck Lever * Output: 655262a0982SChuck Lever * On success: status of zero or more protocol versions has 656262a0982SChuck Lever * been updated; passed-in buffer filled with 657262a0982SChuck Lever * '\n'-terminated C string containing positive 658262a0982SChuck Lever * or negative integer values representing the 659262a0982SChuck Lever * current status of each protocol version; 660262a0982SChuck Lever * return code is the size in bytes of the string 661262a0982SChuck Lever * On error: return code is zero or a negative errno value 662262a0982SChuck Lever */ 6633dd98a3bSJeff Layton static ssize_t write_versions(struct file *file, char *buf, size_t size) 6643dd98a3bSJeff Layton { 6653dd98a3bSJeff Layton ssize_t rv; 6663dd98a3bSJeff Layton 6673dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 6683dd98a3bSJeff Layton rv = __write_versions(file, buf, size); 6693dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 6703dd98a3bSJeff Layton return rv; 6713dd98a3bSJeff Layton } 6723dd98a3bSJeff Layton 6734cd5dc75SChuck Lever /* 6740a5372d8SChuck Lever * Zero-length write. Return a list of NFSD's current listener 6750a5372d8SChuck Lever * transports. 6760a5372d8SChuck Lever */ 6779dd9845fSStanislav Kinsbursky static ssize_t __write_ports_names(char *buf, struct net *net) 6780a5372d8SChuck Lever { 6799dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 6809dd9845fSStanislav Kinsbursky 6819dd9845fSStanislav Kinsbursky if (nn->nfsd_serv == NULL) 6820a5372d8SChuck Lever return 0; 6839dd9845fSStanislav Kinsbursky return svc_xprt_names(nn->nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT); 6840a5372d8SChuck Lever } 6850a5372d8SChuck Lever 6860a5372d8SChuck Lever /* 6870b7c2f6fSChuck Lever * A single 'fd' number was written, in which case it must be for 6880b7c2f6fSChuck Lever * a socket of a supported family/protocol, and we use it as an 6890b7c2f6fSChuck Lever * nfsd listener. 6900b7c2f6fSChuck Lever */ 69108160352SStanislav Kinsbursky static ssize_t __write_ports_addfd(char *buf, struct net *net) 6920b7c2f6fSChuck Lever { 6930b7c2f6fSChuck Lever char *mesg = buf; 6940b7c2f6fSChuck Lever int fd, err; 6959dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 6960b7c2f6fSChuck Lever 6970b7c2f6fSChuck Lever err = get_int(&mesg, &fd); 6980b7c2f6fSChuck Lever if (err != 0 || fd < 0) 6990b7c2f6fSChuck Lever return -EINVAL; 7000b7c2f6fSChuck Lever 70130646394SStanislav Kinsbursky if (svc_alien_sock(net, fd)) { 70230646394SStanislav Kinsbursky printk(KERN_ERR "%s: socket net is different to NFSd's one\n", __func__); 70330646394SStanislav Kinsbursky return -EINVAL; 70430646394SStanislav Kinsbursky } 70530646394SStanislav Kinsbursky 7066777436bSStanislav Kinsbursky err = nfsd_create_serv(net); 7070b7c2f6fSChuck Lever if (err != 0) 7080b7c2f6fSChuck Lever return err; 7090b7c2f6fSChuck Lever 7109dd9845fSStanislav Kinsbursky err = svc_addsock(nn->nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT); 71178a8d7c8SJeff Layton if (err < 0) { 71219f7e2caSStanislav Kinsbursky nfsd_destroy(net); 71378a8d7c8SJeff Layton return err; 71478a8d7c8SJeff Layton } 715ea068badSChuck Lever 7160b7c2f6fSChuck Lever /* Decrease the count, but don't shut down the service */ 7179dd9845fSStanislav Kinsbursky nn->nfsd_serv->sv_nrthreads--; 718ea068badSChuck Lever return err; 7190b7c2f6fSChuck Lever } 7200b7c2f6fSChuck Lever 7210b7c2f6fSChuck Lever /* 7224eb68c26SChuck Lever * A transport listener is added by writing it's transport name and 7234eb68c26SChuck Lever * a port number. 7244eb68c26SChuck Lever */ 72508160352SStanislav Kinsbursky static ssize_t __write_ports_addxprt(char *buf, struct net *net) 7264eb68c26SChuck Lever { 7274eb68c26SChuck Lever char transport[16]; 72837498292SChuck Lever struct svc_xprt *xprt; 7294eb68c26SChuck Lever int port, err; 7309dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 7314eb68c26SChuck Lever 732a10fded1SJ. Bruce Fields if (sscanf(buf, "%15s %5u", transport, &port) != 2) 7334eb68c26SChuck Lever return -EINVAL; 7344eb68c26SChuck Lever 7354be929beSAlexey Dobriyan if (port < 1 || port > USHRT_MAX) 7364eb68c26SChuck Lever return -EINVAL; 7374eb68c26SChuck Lever 7386777436bSStanislav Kinsbursky err = nfsd_create_serv(net); 7394eb68c26SChuck Lever if (err != 0) 7404eb68c26SChuck Lever return err; 7414eb68c26SChuck Lever 7429dd9845fSStanislav Kinsbursky err = svc_create_xprt(nn->nfsd_serv, transport, net, 7434eb68c26SChuck Lever PF_INET, port, SVC_SOCK_ANONYMOUS); 74468717908SChuck Lever if (err < 0) 74537498292SChuck Lever goto out_err; 74637498292SChuck Lever 7479dd9845fSStanislav Kinsbursky err = svc_create_xprt(nn->nfsd_serv, transport, net, 74837498292SChuck Lever PF_INET6, port, SVC_SOCK_ANONYMOUS); 74937498292SChuck Lever if (err < 0 && err != -EAFNOSUPPORT) 75037498292SChuck Lever goto out_close; 7510cd14a06SJeff Layton 7520cd14a06SJeff Layton /* Decrease the count, but don't shut down the service */ 7539dd9845fSStanislav Kinsbursky nn->nfsd_serv->sv_nrthreads--; 7544eb68c26SChuck Lever return 0; 75537498292SChuck Lever out_close: 7569dd9845fSStanislav Kinsbursky xprt = svc_find_xprt(nn->nfsd_serv, transport, net, PF_INET, port); 75737498292SChuck Lever if (xprt != NULL) { 75837498292SChuck Lever svc_close_xprt(xprt); 75937498292SChuck Lever svc_xprt_put(xprt); 76037498292SChuck Lever } 76137498292SChuck Lever out_err: 76219f7e2caSStanislav Kinsbursky nfsd_destroy(net); 76337498292SChuck Lever return err; 7644eb68c26SChuck Lever } 7654eb68c26SChuck Lever 76608160352SStanislav Kinsbursky static ssize_t __write_ports(struct file *file, char *buf, size_t size, 76708160352SStanislav Kinsbursky struct net *net) 76880212d59SNeilBrown { 7690a5372d8SChuck Lever if (size == 0) 7709dd9845fSStanislav Kinsbursky return __write_ports_names(buf, net); 7710b7c2f6fSChuck Lever 7720b7c2f6fSChuck Lever if (isdigit(buf[0])) 77308160352SStanislav Kinsbursky return __write_ports_addfd(buf, net); 77482d56591SChuck Lever 7754eb68c26SChuck Lever if (isalpha(buf[0])) 77608160352SStanislav Kinsbursky return __write_ports_addxprt(buf, net); 7774cd5dc75SChuck Lever 778b41b66d6SNeilBrown return -EINVAL; 779b41b66d6SNeilBrown } 78080212d59SNeilBrown 781262a0982SChuck Lever /** 782262a0982SChuck Lever * write_ports - Pass a socket file descriptor or transport name to listen on 783262a0982SChuck Lever * 784262a0982SChuck Lever * Input: 785262a0982SChuck Lever * buf: ignored 786262a0982SChuck Lever * size: zero 787262a0982SChuck Lever * Output: 788262a0982SChuck Lever * On success: passed-in buffer filled with a '\n'-terminated C 789262a0982SChuck Lever * string containing a whitespace-separated list of 790262a0982SChuck Lever * named NFSD listeners; 791262a0982SChuck Lever * return code is the size in bytes of the string 792262a0982SChuck Lever * On error: return code is zero or a negative errno value 793262a0982SChuck Lever * 794262a0982SChuck Lever * OR 795262a0982SChuck Lever * 796262a0982SChuck Lever * Input: 797262a0982SChuck Lever * buf: C string containing an unsigned 798262a0982SChuck Lever * integer value representing a bound 799262a0982SChuck Lever * but unconnected socket that is to be 800c71206a7SChuck Lever * used as an NFSD listener; listen(3) 801c71206a7SChuck Lever * must be called for a SOCK_STREAM 802c71206a7SChuck Lever * socket, otherwise it is ignored 803262a0982SChuck Lever * size: non-zero length of C string in @buf 804262a0982SChuck Lever * Output: 805262a0982SChuck Lever * On success: NFS service is started; 806262a0982SChuck Lever * passed-in buffer filled with a '\n'-terminated C 807262a0982SChuck Lever * string containing a unique alphanumeric name of 808262a0982SChuck Lever * the listener; 809262a0982SChuck Lever * return code is the size in bytes of the string 810262a0982SChuck Lever * On error: return code is a negative errno value 811262a0982SChuck Lever * 812262a0982SChuck Lever * OR 813262a0982SChuck Lever * 814262a0982SChuck Lever * Input: 815262a0982SChuck Lever * buf: C string containing a transport 816262a0982SChuck Lever * name and an unsigned integer value 817262a0982SChuck Lever * representing the port to listen on, 818262a0982SChuck Lever * separated by whitespace 819262a0982SChuck Lever * size: non-zero length of C string in @buf 820262a0982SChuck Lever * Output: 821262a0982SChuck Lever * On success: returns zero; NFS service is started 822262a0982SChuck Lever * On error: return code is a negative errno value 823262a0982SChuck Lever */ 824bedbdd8bSNeil Brown static ssize_t write_ports(struct file *file, char *buf, size_t size) 825bedbdd8bSNeil Brown { 826bedbdd8bSNeil Brown ssize_t rv; 82711f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 8283dd98a3bSJeff Layton 829bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 83008160352SStanislav Kinsbursky rv = __write_ports(file, buf, size, net); 831bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 832bedbdd8bSNeil Brown return rv; 833bedbdd8bSNeil Brown } 834bedbdd8bSNeil Brown 835bedbdd8bSNeil Brown 836596bbe53SNeilBrown int nfsd_max_blksize; 837596bbe53SNeilBrown 838262a0982SChuck Lever /** 839262a0982SChuck Lever * write_maxblksize - Set or report the current NFS blksize 840262a0982SChuck Lever * 841262a0982SChuck Lever * Input: 842262a0982SChuck Lever * buf: ignored 843262a0982SChuck Lever * size: zero 844262a0982SChuck Lever * 845262a0982SChuck Lever * OR 846262a0982SChuck Lever * 847262a0982SChuck Lever * Input: 848262a0982SChuck Lever * buf: C string containing an unsigned 849262a0982SChuck Lever * integer value representing the new 850262a0982SChuck Lever * NFS blksize 851262a0982SChuck Lever * size: non-zero length of C string in @buf 852262a0982SChuck Lever * Output: 853262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C string 854262a0982SChuck Lever * containing numeric value of the current NFS blksize 855262a0982SChuck Lever * setting; 856262a0982SChuck Lever * return code is the size in bytes of the string 857262a0982SChuck Lever * On error: return code is zero or a negative errno value 858262a0982SChuck Lever */ 859596bbe53SNeilBrown static ssize_t write_maxblksize(struct file *file, char *buf, size_t size) 860596bbe53SNeilBrown { 861596bbe53SNeilBrown char *mesg = buf; 86211f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 8639dd9845fSStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 8649dd9845fSStanislav Kinsbursky 865596bbe53SNeilBrown if (size > 0) { 866596bbe53SNeilBrown int bsize; 867596bbe53SNeilBrown int rv = get_int(&mesg, &bsize); 868596bbe53SNeilBrown if (rv) 869596bbe53SNeilBrown return rv; 870596bbe53SNeilBrown /* force bsize into allowed range and 871596bbe53SNeilBrown * required alignment. 872596bbe53SNeilBrown */ 873*3c7aa15dSKinglong Mee bsize = max_t(int, bsize, 1024); 874*3c7aa15dSKinglong Mee bsize = min_t(int, bsize, NFSSVC_MAXBLKSIZE); 875596bbe53SNeilBrown bsize &= ~(1024-1); 876bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 8779dd9845fSStanislav Kinsbursky if (nn->nfsd_serv) { 878bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 879596bbe53SNeilBrown return -EBUSY; 880596bbe53SNeilBrown } 881596bbe53SNeilBrown nfsd_max_blksize = bsize; 882bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 883596bbe53SNeilBrown } 884e06b6405SChuck Lever 885e06b6405SChuck Lever return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", 886e06b6405SChuck Lever nfsd_max_blksize); 887596bbe53SNeilBrown } 888596bbe53SNeilBrown 88970c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 8909dd9845fSStanislav Kinsbursky static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, 8919dd9845fSStanislav Kinsbursky time_t *time, struct nfsd_net *nn) 8921da177e4SLinus Torvalds { 8931da177e4SLinus Torvalds char *mesg = buf; 894f0135740SJ. Bruce Fields int rv, i; 8951da177e4SLinus Torvalds 8961da177e4SLinus Torvalds if (size > 0) { 8979dd9845fSStanislav Kinsbursky if (nn->nfsd_serv) 8983dd98a3bSJeff Layton return -EBUSY; 899f0135740SJ. Bruce Fields rv = get_int(&mesg, &i); 9001da177e4SLinus Torvalds if (rv) 9011da177e4SLinus Torvalds return rv; 902e7b184f1SJ. Bruce Fields /* 903e7b184f1SJ. Bruce Fields * Some sanity checking. We don't have a reason for 904e7b184f1SJ. Bruce Fields * these particular numbers, but problems with the 905e7b184f1SJ. Bruce Fields * extremes are: 906e7b184f1SJ. Bruce Fields * - Too short: the briefest network outage may 907e7b184f1SJ. Bruce Fields * cause clients to lose all their locks. Also, 908e7b184f1SJ. Bruce Fields * the frequent polling may be wasteful. 909e7b184f1SJ. Bruce Fields * - Too long: do you really want reboot recovery 910e7b184f1SJ. Bruce Fields * to take more than an hour? Or to make other 911e7b184f1SJ. Bruce Fields * clients wait an hour before being able to 912e7b184f1SJ. Bruce Fields * revoke a dead client's locks? 913e7b184f1SJ. Bruce Fields */ 914f0135740SJ. Bruce Fields if (i < 10 || i > 3600) 9151da177e4SLinus Torvalds return -EINVAL; 916f0135740SJ. Bruce Fields *time = i; 9171da177e4SLinus Torvalds } 918e06b6405SChuck Lever 919f0135740SJ. Bruce Fields return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time); 920f0135740SJ. Bruce Fields } 921f0135740SJ. Bruce Fields 9229dd9845fSStanislav Kinsbursky static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, 9239dd9845fSStanislav Kinsbursky time_t *time, struct nfsd_net *nn) 924f0135740SJ. Bruce Fields { 925f0135740SJ. Bruce Fields ssize_t rv; 926f0135740SJ. Bruce Fields 927f0135740SJ. Bruce Fields mutex_lock(&nfsd_mutex); 9289dd9845fSStanislav Kinsbursky rv = __nfsd4_write_time(file, buf, size, time, nn); 929f0135740SJ. Bruce Fields mutex_unlock(&nfsd_mutex); 930f0135740SJ. Bruce Fields return rv; 9311da177e4SLinus Torvalds } 9321da177e4SLinus Torvalds 933262a0982SChuck Lever /** 934262a0982SChuck Lever * write_leasetime - Set or report the current NFSv4 lease time 935262a0982SChuck Lever * 936262a0982SChuck Lever * Input: 937262a0982SChuck Lever * buf: ignored 938262a0982SChuck Lever * size: zero 939262a0982SChuck Lever * 940262a0982SChuck Lever * OR 941262a0982SChuck Lever * 942262a0982SChuck Lever * Input: 943262a0982SChuck Lever * buf: C string containing an unsigned 944262a0982SChuck Lever * integer value representing the new 945262a0982SChuck Lever * NFSv4 lease expiry time 946262a0982SChuck Lever * size: non-zero length of C string in @buf 947262a0982SChuck Lever * Output: 948262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C 949262a0982SChuck Lever * string containing unsigned integer value of the 950262a0982SChuck Lever * current lease expiry time; 951262a0982SChuck Lever * return code is the size in bytes of the string 952262a0982SChuck Lever * On error: return code is zero or a negative errno value 953262a0982SChuck Lever */ 9543dd98a3bSJeff Layton static ssize_t write_leasetime(struct file *file, char *buf, size_t size) 9553dd98a3bSJeff Layton { 95611f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 95711f77942SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 9589dd9845fSStanislav Kinsbursky return nfsd4_write_time(file, buf, size, &nn->nfsd4_lease, nn); 9593dd98a3bSJeff Layton } 9603dd98a3bSJeff Layton 961efc4bb4fSJ. Bruce Fields /** 962efc4bb4fSJ. Bruce Fields * write_gracetime - Set or report current NFSv4 grace period time 963efc4bb4fSJ. Bruce Fields * 964efc4bb4fSJ. Bruce Fields * As above, but sets the time of the NFSv4 grace period. 965efc4bb4fSJ. Bruce Fields * 966efc4bb4fSJ. Bruce Fields * Note this should never be set to less than the *previous* 967efc4bb4fSJ. Bruce Fields * lease-period time, but we don't try to enforce this. (In the common 968efc4bb4fSJ. Bruce Fields * case (a new boot), we don't know what the previous lease time was 969efc4bb4fSJ. Bruce Fields * anyway.) 970efc4bb4fSJ. Bruce Fields */ 971efc4bb4fSJ. Bruce Fields static ssize_t write_gracetime(struct file *file, char *buf, size_t size) 972efc4bb4fSJ. Bruce Fields { 97311f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 97411f77942SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 9759dd9845fSStanislav Kinsbursky return nfsd4_write_time(file, buf, size, &nn->nfsd4_grace, nn); 976efc4bb4fSJ. Bruce Fields } 977efc4bb4fSJ. Bruce Fields 9789dd9845fSStanislav Kinsbursky static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size, 9799dd9845fSStanislav Kinsbursky struct nfsd_net *nn) 9800964a3d3SNeilBrown { 9810964a3d3SNeilBrown char *mesg = buf; 9820964a3d3SNeilBrown char *recdir; 9830964a3d3SNeilBrown int len, status; 9840964a3d3SNeilBrown 9853dd98a3bSJeff Layton if (size > 0) { 9869dd9845fSStanislav Kinsbursky if (nn->nfsd_serv) 9873dd98a3bSJeff Layton return -EBUSY; 9883dd98a3bSJeff Layton if (size > PATH_MAX || buf[size-1] != '\n') 9890964a3d3SNeilBrown return -EINVAL; 9900964a3d3SNeilBrown buf[size-1] = 0; 9910964a3d3SNeilBrown 9920964a3d3SNeilBrown recdir = mesg; 9930964a3d3SNeilBrown len = qword_get(&mesg, recdir, size); 9940964a3d3SNeilBrown if (len <= 0) 9950964a3d3SNeilBrown return -EINVAL; 9960964a3d3SNeilBrown 9970964a3d3SNeilBrown status = nfs4_reset_recoverydir(recdir); 99869049961SAndi Kleen if (status) 99969049961SAndi Kleen return status; 10003dd98a3bSJeff Layton } 10013d72ab8fSChuck Lever 10023d72ab8fSChuck Lever return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n", 10033d72ab8fSChuck Lever nfs4_recoverydir()); 10040964a3d3SNeilBrown } 10053dd98a3bSJeff Layton 1006262a0982SChuck Lever /** 1007262a0982SChuck Lever * write_recoverydir - Set or report the pathname of the recovery directory 1008262a0982SChuck Lever * 1009262a0982SChuck Lever * Input: 1010262a0982SChuck Lever * buf: ignored 1011262a0982SChuck Lever * size: zero 1012262a0982SChuck Lever * 1013262a0982SChuck Lever * OR 1014262a0982SChuck Lever * 1015262a0982SChuck Lever * Input: 1016262a0982SChuck Lever * buf: C string containing the pathname 1017262a0982SChuck Lever * of the directory on a local file 1018262a0982SChuck Lever * system containing permanent NFSv4 1019262a0982SChuck Lever * recovery data 1020262a0982SChuck Lever * size: non-zero length of C string in @buf 1021262a0982SChuck Lever * Output: 1022262a0982SChuck Lever * On success: passed-in buffer filled with '\n'-terminated C string 1023262a0982SChuck Lever * containing the current recovery pathname setting; 1024262a0982SChuck Lever * return code is the size in bytes of the string 1025262a0982SChuck Lever * On error: return code is zero or a negative errno value 1026262a0982SChuck Lever */ 10273dd98a3bSJeff Layton static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) 10283dd98a3bSJeff Layton { 10293dd98a3bSJeff Layton ssize_t rv; 103011f77942SStanislav Kinsbursky struct net *net = file->f_dentry->d_sb->s_fs_info; 103111f77942SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 10323dd98a3bSJeff Layton 10333dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 10349dd9845fSStanislav Kinsbursky rv = __write_recoverydir(file, buf, size, nn); 10353dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 10363dd98a3bSJeff Layton return rv; 10373dd98a3bSJeff Layton } 10383dd98a3bSJeff Layton 103970c3b76cSNeilBrown #endif 10400964a3d3SNeilBrown 10411da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 10421da177e4SLinus Torvalds /* 10431da177e4SLinus Torvalds * populating the filesystem. 10441da177e4SLinus Torvalds */ 10451da177e4SLinus Torvalds 10461da177e4SLinus Torvalds static int nfsd_fill_super(struct super_block * sb, void * data, int silent) 10471da177e4SLinus Torvalds { 10481da177e4SLinus Torvalds static struct tree_descr nfsd_files[] = { 104996d851c4SStanislav Kinsbursky [NFSD_List] = {"exports", &exports_nfsd_operations, S_IRUGO}, 1050e8e8753fSJ. Bruce Fields [NFSD_Export_features] = {"export_features", 1051e8e8753fSJ. Bruce Fields &export_features_operations, S_IRUGO}, 10524373ea84SWendy Cheng [NFSD_FO_UnlockIP] = {"unlock_ip", 10534373ea84SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 105417efa372SWendy Cheng [NFSD_FO_UnlockFS] = {"unlock_filesystem", 105517efa372SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 10561da177e4SLinus Torvalds [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, 10571da177e4SLinus Torvalds [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, 1058eed2965aSGreg Banks [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR}, 105903cf6c9fSGreg Banks [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO}, 1060a2f999a3SJeff Layton [NFSD_Reply_Cache_Stats] = {"reply_cache_stats", &reply_cache_stats_operations, S_IRUGO}, 106170c3b76cSNeilBrown [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, 106280212d59SNeilBrown [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, 1063596bbe53SNeilBrown [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO}, 1064b084f598SJ. Bruce Fields #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) 1065b0b0c0a2SKevin Coffman [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO}, 1066b084f598SJ. Bruce Fields #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ 10671da177e4SLinus Torvalds #ifdef CONFIG_NFSD_V4 10681da177e4SLinus Torvalds [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, 1069efc4bb4fSJ. Bruce Fields [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR}, 10700964a3d3SNeilBrown [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, 10711da177e4SLinus Torvalds #endif 10721da177e4SLinus Torvalds /* last one */ {""} 10731da177e4SLinus Torvalds }; 107411f77942SStanislav Kinsbursky struct net *net = data; 107511f77942SStanislav Kinsbursky int ret; 107611f77942SStanislav Kinsbursky 107711f77942SStanislav Kinsbursky ret = simple_fill_super(sb, 0x6e667364, nfsd_files); 107811f77942SStanislav Kinsbursky if (ret) 107911f77942SStanislav Kinsbursky return ret; 108011f77942SStanislav Kinsbursky sb->s_fs_info = get_net(net); 108111f77942SStanislav Kinsbursky return 0; 10821da177e4SLinus Torvalds } 10831da177e4SLinus Torvalds 1084fc14f2feSAl Viro static struct dentry *nfsd_mount(struct file_system_type *fs_type, 1085fc14f2feSAl Viro int flags, const char *dev_name, void *data) 10861da177e4SLinus Torvalds { 108711f77942SStanislav Kinsbursky return mount_ns(fs_type, flags, current->nsproxy->net_ns, nfsd_fill_super); 108811f77942SStanislav Kinsbursky } 108911f77942SStanislav Kinsbursky 109011f77942SStanislav Kinsbursky static void nfsd_umount(struct super_block *sb) 109111f77942SStanislav Kinsbursky { 109211f77942SStanislav Kinsbursky struct net *net = sb->s_fs_info; 109311f77942SStanislav Kinsbursky 109411f77942SStanislav Kinsbursky kill_litter_super(sb); 109511f77942SStanislav Kinsbursky put_net(net); 10961da177e4SLinus Torvalds } 10971da177e4SLinus Torvalds 10981da177e4SLinus Torvalds static struct file_system_type nfsd_fs_type = { 10991da177e4SLinus Torvalds .owner = THIS_MODULE, 11001da177e4SLinus Torvalds .name = "nfsd", 1101fc14f2feSAl Viro .mount = nfsd_mount, 110211f77942SStanislav Kinsbursky .kill_sb = nfsd_umount, 11031da177e4SLinus Torvalds }; 11047f78e035SEric W. Biederman MODULE_ALIAS_FS("nfsd"); 11051da177e4SLinus Torvalds 1106e331f606SJ. Bruce Fields #ifdef CONFIG_PROC_FS 1107e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 1108e331f606SJ. Bruce Fields { 1109e331f606SJ. Bruce Fields struct proc_dir_entry *entry; 1110e331f606SJ. Bruce Fields 1111e331f606SJ. Bruce Fields entry = proc_mkdir("fs/nfs", NULL); 1112e331f606SJ. Bruce Fields if (!entry) 1113e331f606SJ. Bruce Fields return -ENOMEM; 111496d851c4SStanislav Kinsbursky entry = proc_create("exports", 0, entry, 111596d851c4SStanislav Kinsbursky &exports_proc_operations); 1116ff7c4b36Sfanchaoting if (!entry) { 1117ff7c4b36Sfanchaoting remove_proc_entry("fs/nfs", NULL); 1118e331f606SJ. Bruce Fields return -ENOMEM; 1119ff7c4b36Sfanchaoting } 1120e331f606SJ. Bruce Fields return 0; 1121e331f606SJ. Bruce Fields } 1122e331f606SJ. Bruce Fields #else /* CONFIG_PROC_FS */ 1123e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 1124e331f606SJ. Bruce Fields { 1125e331f606SJ. Bruce Fields return 0; 1126e331f606SJ. Bruce Fields } 1127e331f606SJ. Bruce Fields #endif 1128e331f606SJ. Bruce Fields 11297ea34ac1SJeff Layton int nfsd_net_id; 11305717e012SStanislav Kinsbursky 11315717e012SStanislav Kinsbursky static __net_init int nfsd_init_net(struct net *net) 11325717e012SStanislav Kinsbursky { 11335717e012SStanislav Kinsbursky int retval; 11343d733711SStanislav Kinsbursky struct nfsd_net *nn = net_generic(net, nfsd_net_id); 11355717e012SStanislav Kinsbursky 11365717e012SStanislav Kinsbursky retval = nfsd_export_init(net); 11375717e012SStanislav Kinsbursky if (retval) 11385717e012SStanislav Kinsbursky goto out_export_error; 1139f69adb2fSStanislav Kinsbursky retval = nfsd_idmap_init(net); 1140f69adb2fSStanislav Kinsbursky if (retval) 1141f69adb2fSStanislav Kinsbursky goto out_idmap_error; 11423d733711SStanislav Kinsbursky nn->nfsd4_lease = 90; /* default lease time */ 11435284b44eSStanislav Kinsbursky nn->nfsd4_grace = 90; 11445717e012SStanislav Kinsbursky return 0; 11455717e012SStanislav Kinsbursky 1146f69adb2fSStanislav Kinsbursky out_idmap_error: 1147f69adb2fSStanislav Kinsbursky nfsd_export_shutdown(net); 11485717e012SStanislav Kinsbursky out_export_error: 11495717e012SStanislav Kinsbursky return retval; 11505717e012SStanislav Kinsbursky } 11515717e012SStanislav Kinsbursky 11525717e012SStanislav Kinsbursky static __net_exit void nfsd_exit_net(struct net *net) 11535717e012SStanislav Kinsbursky { 1154f69adb2fSStanislav Kinsbursky nfsd_idmap_shutdown(net); 11555717e012SStanislav Kinsbursky nfsd_export_shutdown(net); 11565717e012SStanislav Kinsbursky } 11575717e012SStanislav Kinsbursky 11587ea34ac1SJeff Layton static struct pernet_operations nfsd_net_ops = { 11595717e012SStanislav Kinsbursky .init = nfsd_init_net, 11605717e012SStanislav Kinsbursky .exit = nfsd_exit_net, 11617ea34ac1SJeff Layton .id = &nfsd_net_id, 11627ea34ac1SJeff Layton .size = sizeof(struct nfsd_net), 11637ea34ac1SJeff Layton }; 11647ea34ac1SJeff Layton 11651da177e4SLinus Torvalds static int __init init_nfsd(void) 11661da177e4SLinus Torvalds { 11671da177e4SLinus Torvalds int retval; 11681da177e4SLinus Torvalds printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n"); 11691da177e4SLinus Torvalds 1170797a9d79SJeff Layton retval = register_cld_notifier(); 1171813fd320SJeff Layton if (retval) 1172813fd320SJeff Layton return retval; 11737ea34ac1SJeff Layton retval = register_pernet_subsys(&nfsd_net_ops); 11747ea34ac1SJeff Layton if (retval < 0) 1175813fd320SJeff Layton goto out_unregister_notifier; 117672083396SBryan Schumaker retval = nfsd4_init_slabs(); 1177e8ff2a84SJ. Bruce Fields if (retval) 11787ea34ac1SJeff Layton goto out_unregister_pernet; 117965178db4SBryan Schumaker retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */ 118065178db4SBryan Schumaker if (retval) 118165178db4SBryan Schumaker goto out_free_slabs; 11821da177e4SLinus Torvalds nfsd_stat_init(); /* Statistics */ 1183d5c3428bSJ. Bruce Fields retval = nfsd_reply_cache_init(); 1184d5c3428bSJ. Bruce Fields if (retval) 1185d5c3428bSJ. Bruce Fields goto out_free_stat; 11861da177e4SLinus Torvalds nfsd_lockd_init(); /* lockd->nfsd callbacks */ 1187e331f606SJ. Bruce Fields retval = create_proc_exports_entry(); 1188e331f606SJ. Bruce Fields if (retval) 1189f69adb2fSStanislav Kinsbursky goto out_free_lockd; 11901da177e4SLinus Torvalds retval = register_filesystem(&nfsd_fs_type); 119126808d3fSJ. Bruce Fields if (retval) 119226808d3fSJ. Bruce Fields goto out_free_all; 119326808d3fSJ. Bruce Fields return 0; 119426808d3fSJ. Bruce Fields out_free_all: 11951da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 11961da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 1197dbf847ecSJ. Bruce Fields out_free_lockd: 11981da177e4SLinus Torvalds nfsd_lockd_shutdown(); 1199e331f606SJ. Bruce Fields nfsd_reply_cache_shutdown(); 1200d5c3428bSJ. Bruce Fields out_free_stat: 1201d5c3428bSJ. Bruce Fields nfsd_stat_shutdown(); 120265178db4SBryan Schumaker nfsd_fault_inject_cleanup(); 120365178db4SBryan Schumaker out_free_slabs: 120446b25895SJ. Bruce Fields nfsd4_free_slabs(); 12057ea34ac1SJeff Layton out_unregister_pernet: 12067ea34ac1SJeff Layton unregister_pernet_subsys(&nfsd_net_ops); 1207813fd320SJeff Layton out_unregister_notifier: 1208797a9d79SJeff Layton unregister_cld_notifier(); 12091da177e4SLinus Torvalds return retval; 12101da177e4SLinus Torvalds } 12111da177e4SLinus Torvalds 12121da177e4SLinus Torvalds static void __exit exit_nfsd(void) 12131da177e4SLinus Torvalds { 1214d5c3428bSJ. Bruce Fields nfsd_reply_cache_shutdown(); 12151da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 12161da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 12171da177e4SLinus Torvalds nfsd_stat_shutdown(); 12181da177e4SLinus Torvalds nfsd_lockd_shutdown(); 1219e8ff2a84SJ. Bruce Fields nfsd4_free_slabs(); 122065178db4SBryan Schumaker nfsd_fault_inject_cleanup(); 12211da177e4SLinus Torvalds unregister_filesystem(&nfsd_fs_type); 12227ea34ac1SJeff Layton unregister_pernet_subsys(&nfsd_net_ops); 1223797a9d79SJeff Layton unregister_cld_notifier(); 12241da177e4SLinus Torvalds } 12251da177e4SLinus Torvalds 12261da177e4SLinus Torvalds MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); 12271da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 12281da177e4SLinus Torvalds module_init(init_nfsd) 12291da177e4SLinus Torvalds module_exit(exit_nfsd) 1230