11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/fs/nfsd/nfsctl.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Syscall interface to knfsd. 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> 71da177e4SLinus Torvalds */ 81da177e4SLinus Torvalds 91da177e4SLinus Torvalds #include <linux/module.h> 101da177e4SLinus Torvalds 111da177e4SLinus Torvalds #include <linux/linkage.h> 121da177e4SLinus Torvalds #include <linux/time.h> 131da177e4SLinus Torvalds #include <linux/errno.h> 141da177e4SLinus Torvalds #include <linux/fs.h> 151da177e4SLinus Torvalds #include <linux/fcntl.h> 161da177e4SLinus Torvalds #include <linux/net.h> 171da177e4SLinus Torvalds #include <linux/in.h> 181da177e4SLinus Torvalds #include <linux/syscalls.h> 191da177e4SLinus Torvalds #include <linux/unistd.h> 201da177e4SLinus Torvalds #include <linux/slab.h> 211da177e4SLinus Torvalds #include <linux/proc_fs.h> 221da177e4SLinus Torvalds #include <linux/seq_file.h> 231da177e4SLinus Torvalds #include <linux/pagemap.h> 241da177e4SLinus Torvalds #include <linux/init.h> 254373ea84SWendy Cheng #include <linux/inet.h> 2670c3b76cSNeilBrown #include <linux/string.h> 2780212d59SNeilBrown #include <linux/smp_lock.h> 28b41b66d6SNeilBrown #include <linux/ctype.h> 291da177e4SLinus Torvalds 301da177e4SLinus Torvalds #include <linux/nfs.h> 311da177e4SLinus Torvalds #include <linux/nfsd_idmap.h> 32b41b66d6SNeilBrown #include <linux/lockd/bind.h> 331da177e4SLinus Torvalds #include <linux/sunrpc/svc.h> 3480212d59SNeilBrown #include <linux/sunrpc/svcsock.h> 351da177e4SLinus Torvalds #include <linux/nfsd/nfsd.h> 361da177e4SLinus Torvalds #include <linux/nfsd/cache.h> 371da177e4SLinus Torvalds #include <linux/nfsd/xdr.h> 381da177e4SLinus Torvalds #include <linux/nfsd/syscall.h> 394373ea84SWendy Cheng #include <linux/lockd/lockd.h> 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds #include <asm/uaccess.h> 42f15364bdSAurélien Charbon #include <net/ipv6.h> 431da177e4SLinus Torvalds 441da177e4SLinus Torvalds /* 451da177e4SLinus Torvalds * We have a single directory with 9 nodes in it. 461da177e4SLinus Torvalds */ 471da177e4SLinus Torvalds enum { 481da177e4SLinus Torvalds NFSD_Root = 1, 491da177e4SLinus Torvalds NFSD_Svc, 501da177e4SLinus Torvalds NFSD_Add, 511da177e4SLinus Torvalds NFSD_Del, 521da177e4SLinus Torvalds NFSD_Export, 531da177e4SLinus Torvalds NFSD_Unexport, 541da177e4SLinus Torvalds NFSD_Getfd, 551da177e4SLinus Torvalds NFSD_Getfs, 561da177e4SLinus Torvalds NFSD_List, 571da177e4SLinus Torvalds NFSD_Fh, 584373ea84SWendy Cheng NFSD_FO_UnlockIP, 59*17efa372SWendy Cheng NFSD_FO_UnlockFS, 601da177e4SLinus Torvalds NFSD_Threads, 61eed2965aSGreg Banks NFSD_Pool_Threads, 6270c3b76cSNeilBrown NFSD_Versions, 6380212d59SNeilBrown NFSD_Ports, 64596bbe53SNeilBrown NFSD_MaxBlkSize, 6570c3b76cSNeilBrown /* 6670c3b76cSNeilBrown * The below MUST come last. Otherwise we leave a hole in nfsd_files[] 6770c3b76cSNeilBrown * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops 6870c3b76cSNeilBrown */ 6970c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 701da177e4SLinus Torvalds NFSD_Leasetime, 710964a3d3SNeilBrown NFSD_RecoveryDir, 7270c3b76cSNeilBrown #endif 731da177e4SLinus Torvalds }; 741da177e4SLinus Torvalds 751da177e4SLinus Torvalds /* 761da177e4SLinus Torvalds * write() for these nodes. 771da177e4SLinus Torvalds */ 781da177e4SLinus Torvalds static ssize_t write_svc(struct file *file, char *buf, size_t size); 791da177e4SLinus Torvalds static ssize_t write_add(struct file *file, char *buf, size_t size); 801da177e4SLinus Torvalds static ssize_t write_del(struct file *file, char *buf, size_t size); 811da177e4SLinus Torvalds static ssize_t write_export(struct file *file, char *buf, size_t size); 821da177e4SLinus Torvalds static ssize_t write_unexport(struct file *file, char *buf, size_t size); 831da177e4SLinus Torvalds static ssize_t write_getfd(struct file *file, char *buf, size_t size); 841da177e4SLinus Torvalds static ssize_t write_getfs(struct file *file, char *buf, size_t size); 851da177e4SLinus Torvalds static ssize_t write_filehandle(struct file *file, char *buf, size_t size); 861da177e4SLinus Torvalds static ssize_t write_threads(struct file *file, char *buf, size_t size); 87eed2965aSGreg Banks static ssize_t write_pool_threads(struct file *file, char *buf, size_t size); 8870c3b76cSNeilBrown static ssize_t write_versions(struct file *file, char *buf, size_t size); 8980212d59SNeilBrown static ssize_t write_ports(struct file *file, char *buf, size_t size); 90596bbe53SNeilBrown static ssize_t write_maxblksize(struct file *file, char *buf, size_t size); 9170c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 921da177e4SLinus Torvalds static ssize_t write_leasetime(struct file *file, char *buf, size_t size); 930964a3d3SNeilBrown static ssize_t write_recoverydir(struct file *file, char *buf, size_t size); 9470c3b76cSNeilBrown #endif 951da177e4SLinus Torvalds 964373ea84SWendy Cheng static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size); 97*17efa372SWendy Cheng static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size); 984373ea84SWendy Cheng 991da177e4SLinus Torvalds static ssize_t (*write_op[])(struct file *, char *, size_t) = { 1001da177e4SLinus Torvalds [NFSD_Svc] = write_svc, 1011da177e4SLinus Torvalds [NFSD_Add] = write_add, 1021da177e4SLinus Torvalds [NFSD_Del] = write_del, 1031da177e4SLinus Torvalds [NFSD_Export] = write_export, 1041da177e4SLinus Torvalds [NFSD_Unexport] = write_unexport, 1051da177e4SLinus Torvalds [NFSD_Getfd] = write_getfd, 1061da177e4SLinus Torvalds [NFSD_Getfs] = write_getfs, 1071da177e4SLinus Torvalds [NFSD_Fh] = write_filehandle, 1084373ea84SWendy Cheng [NFSD_FO_UnlockIP] = failover_unlock_ip, 109*17efa372SWendy Cheng [NFSD_FO_UnlockFS] = failover_unlock_fs, 1101da177e4SLinus Torvalds [NFSD_Threads] = write_threads, 111eed2965aSGreg Banks [NFSD_Pool_Threads] = write_pool_threads, 11270c3b76cSNeilBrown [NFSD_Versions] = write_versions, 11380212d59SNeilBrown [NFSD_Ports] = write_ports, 114596bbe53SNeilBrown [NFSD_MaxBlkSize] = write_maxblksize, 11570c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 1161da177e4SLinus Torvalds [NFSD_Leasetime] = write_leasetime, 1170964a3d3SNeilBrown [NFSD_RecoveryDir] = write_recoverydir, 11870c3b76cSNeilBrown #endif 1191da177e4SLinus Torvalds }; 1201da177e4SLinus Torvalds 1211da177e4SLinus Torvalds static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos) 1221da177e4SLinus Torvalds { 1237eaa36e2SJosef "Jeff" Sipek ino_t ino = file->f_path.dentry->d_inode->i_ino; 1241da177e4SLinus Torvalds char *data; 1251da177e4SLinus Torvalds ssize_t rv; 1261da177e4SLinus Torvalds 127e8c96f8cSTobias Klauser if (ino >= ARRAY_SIZE(write_op) || !write_op[ino]) 1281da177e4SLinus Torvalds return -EINVAL; 1291da177e4SLinus Torvalds 1301da177e4SLinus Torvalds data = simple_transaction_get(file, buf, size); 1311da177e4SLinus Torvalds if (IS_ERR(data)) 1321da177e4SLinus Torvalds return PTR_ERR(data); 1331da177e4SLinus Torvalds 1341da177e4SLinus Torvalds rv = write_op[ino](file, data, size); 1358971a101SNeilBrown if (rv >= 0) { 1361da177e4SLinus Torvalds simple_transaction_set(file, rv); 1371da177e4SLinus Torvalds rv = size; 1381da177e4SLinus Torvalds } 1391da177e4SLinus Torvalds return rv; 1401da177e4SLinus Torvalds } 1411da177e4SLinus Torvalds 1427390022dSNeilBrown static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos) 1437390022dSNeilBrown { 1447390022dSNeilBrown if (! file->private_data) { 1457390022dSNeilBrown /* An attempt to read a transaction file without writing 1467390022dSNeilBrown * causes a 0-byte write so that the file can return 1477390022dSNeilBrown * state information 1487390022dSNeilBrown */ 1497390022dSNeilBrown ssize_t rv = nfsctl_transaction_write(file, buf, 0, pos); 1507390022dSNeilBrown if (rv < 0) 1517390022dSNeilBrown return rv; 1527390022dSNeilBrown } 1537390022dSNeilBrown return simple_transaction_read(file, buf, size, pos); 1547390022dSNeilBrown } 1557390022dSNeilBrown 1564b6f5d20SArjan van de Ven static const struct file_operations transaction_ops = { 1571da177e4SLinus Torvalds .write = nfsctl_transaction_write, 1587390022dSNeilBrown .read = nfsctl_transaction_read, 1591da177e4SLinus Torvalds .release = simple_transaction_release, 1601da177e4SLinus Torvalds }; 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds static int exports_open(struct inode *inode, struct file *file) 1631da177e4SLinus Torvalds { 1641da177e4SLinus Torvalds return seq_open(file, &nfs_exports_op); 1651da177e4SLinus Torvalds } 1661da177e4SLinus Torvalds 1674b6f5d20SArjan van de Ven static const struct file_operations exports_operations = { 1681da177e4SLinus Torvalds .open = exports_open, 1691da177e4SLinus Torvalds .read = seq_read, 1701da177e4SLinus Torvalds .llseek = seq_lseek, 1711da177e4SLinus Torvalds .release = seq_release, 1721da177e4SLinus Torvalds }; 1731da177e4SLinus Torvalds 1741da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 1751da177e4SLinus Torvalds /* 1761da177e4SLinus Torvalds * payload - write methods 1771da177e4SLinus Torvalds * If the method has a response, the response should be put in buf, 1781da177e4SLinus Torvalds * and the length returned. Otherwise return 0 or and -error. 1791da177e4SLinus Torvalds */ 1801da177e4SLinus Torvalds 1811da177e4SLinus Torvalds static ssize_t write_svc(struct file *file, char *buf, size_t size) 1821da177e4SLinus Torvalds { 1831da177e4SLinus Torvalds struct nfsctl_svc *data; 1841da177e4SLinus Torvalds if (size < sizeof(*data)) 1851da177e4SLinus Torvalds return -EINVAL; 1861da177e4SLinus Torvalds data = (struct nfsctl_svc*) buf; 1871da177e4SLinus Torvalds return nfsd_svc(data->svc_port, data->svc_nthreads); 1881da177e4SLinus Torvalds } 1891da177e4SLinus Torvalds 1901da177e4SLinus Torvalds static ssize_t write_add(struct file *file, char *buf, size_t size) 1911da177e4SLinus Torvalds { 1921da177e4SLinus Torvalds struct nfsctl_client *data; 1931da177e4SLinus Torvalds if (size < sizeof(*data)) 1941da177e4SLinus Torvalds return -EINVAL; 1951da177e4SLinus Torvalds data = (struct nfsctl_client *)buf; 1961da177e4SLinus Torvalds return exp_addclient(data); 1971da177e4SLinus Torvalds } 1981da177e4SLinus Torvalds 1991da177e4SLinus Torvalds static ssize_t write_del(struct file *file, char *buf, size_t size) 2001da177e4SLinus Torvalds { 2011da177e4SLinus Torvalds struct nfsctl_client *data; 2021da177e4SLinus Torvalds if (size < sizeof(*data)) 2031da177e4SLinus Torvalds return -EINVAL; 2041da177e4SLinus Torvalds data = (struct nfsctl_client *)buf; 2051da177e4SLinus Torvalds return exp_delclient(data); 2061da177e4SLinus Torvalds } 2071da177e4SLinus Torvalds 2081da177e4SLinus Torvalds static ssize_t write_export(struct file *file, char *buf, size_t size) 2091da177e4SLinus Torvalds { 2101da177e4SLinus Torvalds struct nfsctl_export *data; 2111da177e4SLinus Torvalds if (size < sizeof(*data)) 2121da177e4SLinus Torvalds return -EINVAL; 2131da177e4SLinus Torvalds data = (struct nfsctl_export*)buf; 2141da177e4SLinus Torvalds return exp_export(data); 2151da177e4SLinus Torvalds } 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds static ssize_t write_unexport(struct file *file, char *buf, size_t size) 2181da177e4SLinus Torvalds { 2191da177e4SLinus Torvalds struct nfsctl_export *data; 2201da177e4SLinus Torvalds 2211da177e4SLinus Torvalds if (size < sizeof(*data)) 2221da177e4SLinus Torvalds return -EINVAL; 2231da177e4SLinus Torvalds data = (struct nfsctl_export*)buf; 2241da177e4SLinus Torvalds return exp_unexport(data); 2251da177e4SLinus Torvalds } 2261da177e4SLinus Torvalds 2271da177e4SLinus Torvalds static ssize_t write_getfs(struct file *file, char *buf, size_t size) 2281da177e4SLinus Torvalds { 2291da177e4SLinus Torvalds struct nfsctl_fsparm *data; 2301da177e4SLinus Torvalds struct sockaddr_in *sin; 2311da177e4SLinus Torvalds struct auth_domain *clp; 2321da177e4SLinus Torvalds int err = 0; 2331da177e4SLinus Torvalds struct knfsd_fh *res; 234f15364bdSAurélien Charbon struct in6_addr in6; 2351da177e4SLinus Torvalds 2361da177e4SLinus Torvalds if (size < sizeof(*data)) 2371da177e4SLinus Torvalds return -EINVAL; 2381da177e4SLinus Torvalds data = (struct nfsctl_fsparm*)buf; 2391da177e4SLinus Torvalds err = -EPROTONOSUPPORT; 2401da177e4SLinus Torvalds if (data->gd_addr.sa_family != AF_INET) 2411da177e4SLinus Torvalds goto out; 2421da177e4SLinus Torvalds sin = (struct sockaddr_in *)&data->gd_addr; 2431da177e4SLinus Torvalds if (data->gd_maxlen > NFS3_FHSIZE) 2441da177e4SLinus Torvalds data->gd_maxlen = NFS3_FHSIZE; 2451da177e4SLinus Torvalds 2461da177e4SLinus Torvalds res = (struct knfsd_fh*)buf; 2471da177e4SLinus Torvalds 2481da177e4SLinus Torvalds exp_readlock(); 249f15364bdSAurélien Charbon 250f15364bdSAurélien Charbon ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6); 251f15364bdSAurélien Charbon 252f15364bdSAurélien Charbon clp = auth_unix_lookup(&in6); 253f15364bdSAurélien Charbon if (!clp) 2541da177e4SLinus Torvalds err = -EPERM; 2551da177e4SLinus Torvalds else { 2561da177e4SLinus Torvalds err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen); 2571da177e4SLinus Torvalds auth_domain_put(clp); 2581da177e4SLinus Torvalds } 2591da177e4SLinus Torvalds exp_readunlock(); 2601da177e4SLinus Torvalds if (err == 0) 26112127498SAndrew Morton err = res->fh_size + offsetof(struct knfsd_fh, fh_base); 2621da177e4SLinus Torvalds out: 2631da177e4SLinus Torvalds return err; 2641da177e4SLinus Torvalds } 2651da177e4SLinus Torvalds 2661da177e4SLinus Torvalds static ssize_t write_getfd(struct file *file, char *buf, size_t size) 2671da177e4SLinus Torvalds { 2681da177e4SLinus Torvalds struct nfsctl_fdparm *data; 2691da177e4SLinus Torvalds struct sockaddr_in *sin; 2701da177e4SLinus Torvalds struct auth_domain *clp; 2711da177e4SLinus Torvalds int err = 0; 2721da177e4SLinus Torvalds struct knfsd_fh fh; 2731da177e4SLinus Torvalds char *res; 274f15364bdSAurélien Charbon struct in6_addr in6; 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds if (size < sizeof(*data)) 2771da177e4SLinus Torvalds return -EINVAL; 2781da177e4SLinus Torvalds data = (struct nfsctl_fdparm*)buf; 2791da177e4SLinus Torvalds err = -EPROTONOSUPPORT; 2801da177e4SLinus Torvalds if (data->gd_addr.sa_family != AF_INET) 2811da177e4SLinus Torvalds goto out; 2821da177e4SLinus Torvalds err = -EINVAL; 2831da177e4SLinus Torvalds if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS) 2841da177e4SLinus Torvalds goto out; 2851da177e4SLinus Torvalds 2861da177e4SLinus Torvalds res = buf; 2871da177e4SLinus Torvalds sin = (struct sockaddr_in *)&data->gd_addr; 2881da177e4SLinus Torvalds exp_readlock(); 289f15364bdSAurélien Charbon 290f15364bdSAurélien Charbon ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6); 291f15364bdSAurélien Charbon 292f15364bdSAurélien Charbon clp = auth_unix_lookup(&in6); 293f15364bdSAurélien Charbon if (!clp) 2941da177e4SLinus Torvalds err = -EPERM; 2951da177e4SLinus Torvalds else { 2961da177e4SLinus Torvalds err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE); 2971da177e4SLinus Torvalds auth_domain_put(clp); 2981da177e4SLinus Torvalds } 2991da177e4SLinus Torvalds exp_readunlock(); 3001da177e4SLinus Torvalds 3011da177e4SLinus Torvalds if (err == 0) { 3021da177e4SLinus Torvalds memset(res,0, NFS_FHSIZE); 3031da177e4SLinus Torvalds memcpy(res, &fh.fh_base, fh.fh_size); 3041da177e4SLinus Torvalds err = NFS_FHSIZE; 3051da177e4SLinus Torvalds } 3061da177e4SLinus Torvalds out: 3071da177e4SLinus Torvalds return err; 3081da177e4SLinus Torvalds } 3091da177e4SLinus Torvalds 3104373ea84SWendy Cheng static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size) 3114373ea84SWendy Cheng { 3124373ea84SWendy Cheng __be32 server_ip; 3134373ea84SWendy Cheng char *fo_path, c; 3144373ea84SWendy Cheng int b1, b2, b3, b4; 3154373ea84SWendy Cheng 3164373ea84SWendy Cheng /* sanity check */ 3174373ea84SWendy Cheng if (size == 0) 3184373ea84SWendy Cheng return -EINVAL; 3194373ea84SWendy Cheng 3204373ea84SWendy Cheng if (buf[size-1] != '\n') 3214373ea84SWendy Cheng return -EINVAL; 3224373ea84SWendy Cheng 3234373ea84SWendy Cheng fo_path = buf; 3244373ea84SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 3254373ea84SWendy Cheng return -EINVAL; 3264373ea84SWendy Cheng 3274373ea84SWendy Cheng /* get ipv4 address */ 3284373ea84SWendy Cheng if (sscanf(fo_path, "%u.%u.%u.%u%c", &b1, &b2, &b3, &b4, &c) != 4) 3294373ea84SWendy Cheng return -EINVAL; 3304373ea84SWendy Cheng server_ip = htonl((((((b1<<8)|b2)<<8)|b3)<<8)|b4); 3314373ea84SWendy Cheng 3324373ea84SWendy Cheng return nlmsvc_unlock_all_by_ip(server_ip); 3334373ea84SWendy Cheng } 3344373ea84SWendy Cheng 335*17efa372SWendy Cheng static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size) 336*17efa372SWendy Cheng { 337*17efa372SWendy Cheng struct nameidata nd; 338*17efa372SWendy Cheng char *fo_path; 339*17efa372SWendy Cheng int error; 340*17efa372SWendy Cheng 341*17efa372SWendy Cheng /* sanity check */ 342*17efa372SWendy Cheng if (size == 0) 343*17efa372SWendy Cheng return -EINVAL; 344*17efa372SWendy Cheng 345*17efa372SWendy Cheng if (buf[size-1] != '\n') 346*17efa372SWendy Cheng return -EINVAL; 347*17efa372SWendy Cheng 348*17efa372SWendy Cheng fo_path = buf; 349*17efa372SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 350*17efa372SWendy Cheng return -EINVAL; 351*17efa372SWendy Cheng 352*17efa372SWendy Cheng error = path_lookup(fo_path, 0, &nd); 353*17efa372SWendy Cheng if (error) 354*17efa372SWendy Cheng return error; 355*17efa372SWendy Cheng 356*17efa372SWendy Cheng error = nlmsvc_unlock_all_by_sb(nd.path.mnt->mnt_sb); 357*17efa372SWendy Cheng 358*17efa372SWendy Cheng path_put(&nd.path); 359*17efa372SWendy Cheng return error; 360*17efa372SWendy Cheng } 361*17efa372SWendy Cheng 3621da177e4SLinus Torvalds static ssize_t write_filehandle(struct file *file, char *buf, size_t size) 3631da177e4SLinus Torvalds { 3641da177e4SLinus Torvalds /* request is: 3651da177e4SLinus Torvalds * domain path maxsize 3661da177e4SLinus Torvalds * response is 3671da177e4SLinus Torvalds * filehandle 3681da177e4SLinus Torvalds * 3691da177e4SLinus Torvalds * qword quoting is used, so filehandle will be \x.... 3701da177e4SLinus Torvalds */ 3711da177e4SLinus Torvalds char *dname, *path; 372246d95baSAndrew Morton int uninitialized_var(maxsize); 3731da177e4SLinus Torvalds char *mesg = buf; 3741da177e4SLinus Torvalds int len; 3751da177e4SLinus Torvalds struct auth_domain *dom; 3761da177e4SLinus Torvalds struct knfsd_fh fh; 3771da177e4SLinus Torvalds 37887d26ea7SJ. Bruce Fields if (size == 0) 37987d26ea7SJ. Bruce Fields return -EINVAL; 38087d26ea7SJ. Bruce Fields 3811da177e4SLinus Torvalds if (buf[size-1] != '\n') 3821da177e4SLinus Torvalds return -EINVAL; 3831da177e4SLinus Torvalds buf[size-1] = 0; 3841da177e4SLinus Torvalds 3851da177e4SLinus Torvalds dname = mesg; 3861da177e4SLinus Torvalds len = qword_get(&mesg, dname, size); 3871da177e4SLinus Torvalds if (len <= 0) return -EINVAL; 3881da177e4SLinus Torvalds 3891da177e4SLinus Torvalds path = dname+len+1; 3901da177e4SLinus Torvalds len = qword_get(&mesg, path, size); 3911da177e4SLinus Torvalds if (len <= 0) return -EINVAL; 3921da177e4SLinus Torvalds 3931da177e4SLinus Torvalds len = get_int(&mesg, &maxsize); 3941da177e4SLinus Torvalds if (len) 3951da177e4SLinus Torvalds return len; 3961da177e4SLinus Torvalds 3971da177e4SLinus Torvalds if (maxsize < NFS_FHSIZE) 3981da177e4SLinus Torvalds return -EINVAL; 3991da177e4SLinus Torvalds if (maxsize > NFS3_FHSIZE) 4001da177e4SLinus Torvalds maxsize = NFS3_FHSIZE; 4011da177e4SLinus Torvalds 4021da177e4SLinus Torvalds if (qword_get(&mesg, mesg, size)>0) 4031da177e4SLinus Torvalds return -EINVAL; 4041da177e4SLinus Torvalds 4051da177e4SLinus Torvalds /* we have all the words, they are in buf.. */ 4061da177e4SLinus Torvalds dom = unix_domain_find(dname); 4071da177e4SLinus Torvalds if (!dom) 4081da177e4SLinus Torvalds return -ENOMEM; 4091da177e4SLinus Torvalds 4101da177e4SLinus Torvalds len = exp_rootfh(dom, path, &fh, maxsize); 4111da177e4SLinus Torvalds auth_domain_put(dom); 4121da177e4SLinus Torvalds if (len) 4131da177e4SLinus Torvalds return len; 4141da177e4SLinus Torvalds 4151da177e4SLinus Torvalds mesg = buf; len = SIMPLE_TRANSACTION_LIMIT; 4161da177e4SLinus Torvalds qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size); 4171da177e4SLinus Torvalds mesg[-1] = '\n'; 4181da177e4SLinus Torvalds return mesg - buf; 4191da177e4SLinus Torvalds } 4201da177e4SLinus Torvalds 4211da177e4SLinus Torvalds static ssize_t write_threads(struct file *file, char *buf, size_t size) 4221da177e4SLinus Torvalds { 4231da177e4SLinus Torvalds /* if size > 0, look for a number of threads and call nfsd_svc 4241da177e4SLinus Torvalds * then write out number of threads as reply 4251da177e4SLinus Torvalds */ 4261da177e4SLinus Torvalds char *mesg = buf; 4271da177e4SLinus Torvalds int rv; 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; 4351da177e4SLinus Torvalds rv = nfsd_svc(2049, newthreads); 4361da177e4SLinus Torvalds if (rv) 4371da177e4SLinus Torvalds return rv; 4381da177e4SLinus Torvalds } 4391da177e4SLinus Torvalds sprintf(buf, "%d\n", nfsd_nrthreads()); 4401da177e4SLinus Torvalds return strlen(buf); 4411da177e4SLinus Torvalds } 4421da177e4SLinus Torvalds 443eed2965aSGreg Banks static ssize_t write_pool_threads(struct file *file, char *buf, size_t size) 444eed2965aSGreg Banks { 445eed2965aSGreg Banks /* if size > 0, look for an array of number of threads per node 446eed2965aSGreg Banks * and apply them then write out number of threads per node as reply 447eed2965aSGreg Banks */ 448eed2965aSGreg Banks char *mesg = buf; 449eed2965aSGreg Banks int i; 450eed2965aSGreg Banks int rv; 451eed2965aSGreg Banks int len; 452eed2965aSGreg Banks int npools = nfsd_nrpools(); 453eed2965aSGreg Banks int *nthreads; 454eed2965aSGreg Banks 455eed2965aSGreg Banks if (npools == 0) { 456eed2965aSGreg Banks /* 457eed2965aSGreg Banks * NFS is shut down. The admin can start it by 458eed2965aSGreg Banks * writing to the threads file but NOT the pool_threads 459eed2965aSGreg Banks * file, sorry. Report zero threads. 460eed2965aSGreg Banks */ 461eed2965aSGreg Banks strcpy(buf, "0\n"); 462eed2965aSGreg Banks return strlen(buf); 463eed2965aSGreg Banks } 464eed2965aSGreg Banks 465eed2965aSGreg Banks nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL); 466eed2965aSGreg Banks if (nthreads == NULL) 467eed2965aSGreg Banks return -ENOMEM; 468eed2965aSGreg Banks 469eed2965aSGreg Banks if (size > 0) { 470eed2965aSGreg Banks for (i = 0; i < npools; i++) { 471eed2965aSGreg Banks rv = get_int(&mesg, &nthreads[i]); 472eed2965aSGreg Banks if (rv == -ENOENT) 473eed2965aSGreg Banks break; /* fewer numbers than pools */ 474eed2965aSGreg Banks if (rv) 475eed2965aSGreg Banks goto out_free; /* syntax error */ 476eed2965aSGreg Banks rv = -EINVAL; 477eed2965aSGreg Banks if (nthreads[i] < 0) 478eed2965aSGreg Banks goto out_free; 479eed2965aSGreg Banks } 480eed2965aSGreg Banks rv = nfsd_set_nrthreads(i, nthreads); 481eed2965aSGreg Banks if (rv) 482eed2965aSGreg Banks goto out_free; 483eed2965aSGreg Banks } 484eed2965aSGreg Banks 485eed2965aSGreg Banks rv = nfsd_get_nrthreads(npools, nthreads); 486eed2965aSGreg Banks if (rv) 487eed2965aSGreg Banks goto out_free; 488eed2965aSGreg Banks 489eed2965aSGreg Banks mesg = buf; 490eed2965aSGreg Banks size = SIMPLE_TRANSACTION_LIMIT; 491eed2965aSGreg Banks for (i = 0; i < npools && size > 0; i++) { 492eed2965aSGreg Banks snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' ')); 493eed2965aSGreg Banks len = strlen(mesg); 494eed2965aSGreg Banks size -= len; 495eed2965aSGreg Banks mesg += len; 496eed2965aSGreg Banks } 497eed2965aSGreg Banks 498eed2965aSGreg Banks return (mesg-buf); 499eed2965aSGreg Banks 500eed2965aSGreg Banks out_free: 501eed2965aSGreg Banks kfree(nthreads); 502eed2965aSGreg Banks return rv; 503eed2965aSGreg Banks } 504eed2965aSGreg Banks 50570c3b76cSNeilBrown static ssize_t write_versions(struct file *file, char *buf, size_t size) 50670c3b76cSNeilBrown { 50770c3b76cSNeilBrown /* 50870c3b76cSNeilBrown * Format: 50970c3b76cSNeilBrown * [-/+]vers [-/+]vers ... 51070c3b76cSNeilBrown */ 51170c3b76cSNeilBrown char *mesg = buf; 51270c3b76cSNeilBrown char *vers, sign; 51370c3b76cSNeilBrown int len, num; 51470c3b76cSNeilBrown ssize_t tlen = 0; 51570c3b76cSNeilBrown char *sep; 51670c3b76cSNeilBrown 51770c3b76cSNeilBrown if (size>0) { 51870c3b76cSNeilBrown if (nfsd_serv) 5196658d3a7SNeilBrown /* Cannot change versions without updating 5206658d3a7SNeilBrown * nfsd_serv->sv_xdrsize, and reallocing 5216658d3a7SNeilBrown * rq_argp and rq_resp 5226658d3a7SNeilBrown */ 52370c3b76cSNeilBrown return -EBUSY; 52470c3b76cSNeilBrown if (buf[size-1] != '\n') 52570c3b76cSNeilBrown return -EINVAL; 52670c3b76cSNeilBrown buf[size-1] = 0; 52770c3b76cSNeilBrown 52870c3b76cSNeilBrown vers = mesg; 52970c3b76cSNeilBrown len = qword_get(&mesg, vers, size); 53070c3b76cSNeilBrown if (len <= 0) return -EINVAL; 53170c3b76cSNeilBrown do { 53270c3b76cSNeilBrown sign = *vers; 53370c3b76cSNeilBrown if (sign == '+' || sign == '-') 53470c3b76cSNeilBrown num = simple_strtol((vers+1), NULL, 0); 53570c3b76cSNeilBrown else 53670c3b76cSNeilBrown num = simple_strtol(vers, NULL, 0); 53770c3b76cSNeilBrown switch(num) { 53870c3b76cSNeilBrown case 2: 53970c3b76cSNeilBrown case 3: 54070c3b76cSNeilBrown case 4: 5416658d3a7SNeilBrown nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET); 54270c3b76cSNeilBrown break; 54370c3b76cSNeilBrown default: 54470c3b76cSNeilBrown return -EINVAL; 54570c3b76cSNeilBrown } 54670c3b76cSNeilBrown vers += len + 1; 54770c3b76cSNeilBrown tlen += len; 54870c3b76cSNeilBrown } while ((len = qword_get(&mesg, vers, size)) > 0); 54970c3b76cSNeilBrown /* If all get turned off, turn them back on, as 55070c3b76cSNeilBrown * having no versions is BAD 55170c3b76cSNeilBrown */ 5526658d3a7SNeilBrown nfsd_reset_versions(); 55370c3b76cSNeilBrown } 55470c3b76cSNeilBrown /* Now write current state into reply buffer */ 55570c3b76cSNeilBrown len = 0; 55670c3b76cSNeilBrown sep = ""; 55770c3b76cSNeilBrown for (num=2 ; num <= 4 ; num++) 5586658d3a7SNeilBrown if (nfsd_vers(num, NFSD_AVAIL)) { 55970c3b76cSNeilBrown len += sprintf(buf+len, "%s%c%d", sep, 5606658d3a7SNeilBrown nfsd_vers(num, NFSD_TEST)?'+':'-', 56170c3b76cSNeilBrown num); 56270c3b76cSNeilBrown sep = " "; 56370c3b76cSNeilBrown } 56470c3b76cSNeilBrown len += sprintf(buf+len, "\n"); 56570c3b76cSNeilBrown return len; 56670c3b76cSNeilBrown } 56770c3b76cSNeilBrown 56880212d59SNeilBrown static ssize_t write_ports(struct file *file, char *buf, size_t size) 56980212d59SNeilBrown { 570b41b66d6SNeilBrown if (size == 0) { 57180212d59SNeilBrown int len = 0; 57280212d59SNeilBrown lock_kernel(); 57380212d59SNeilBrown if (nfsd_serv) 5749571af18STom Tucker len = svc_xprt_names(nfsd_serv, buf, 0); 57580212d59SNeilBrown unlock_kernel(); 57680212d59SNeilBrown return len; 57780212d59SNeilBrown } 578b41b66d6SNeilBrown /* Either a single 'fd' number is written, in which 579b41b66d6SNeilBrown * case it must be for a socket of a supported family/protocol, 580b41b66d6SNeilBrown * and we use it as an nfsd socket, or 581b41b66d6SNeilBrown * A '-' followed by the 'name' of a socket in which case 582b41b66d6SNeilBrown * we close the socket. 583b41b66d6SNeilBrown */ 584b41b66d6SNeilBrown if (isdigit(buf[0])) { 585b41b66d6SNeilBrown char *mesg = buf; 586b41b66d6SNeilBrown int fd; 587b41b66d6SNeilBrown int err; 588b41b66d6SNeilBrown err = get_int(&mesg, &fd); 589b41b66d6SNeilBrown if (err) 590b41b66d6SNeilBrown return -EINVAL; 591b41b66d6SNeilBrown if (fd < 0) 592b41b66d6SNeilBrown return -EINVAL; 593b41b66d6SNeilBrown err = nfsd_create_serv(); 594b41b66d6SNeilBrown if (!err) { 595b41b66d6SNeilBrown int proto = 0; 596b41b66d6SNeilBrown err = svc_addsock(nfsd_serv, fd, buf, &proto); 5975680c446SNeilBrown if (err >= 0) { 5985680c446SNeilBrown err = lockd_up(proto); 5995680c446SNeilBrown if (err < 0) 6005680c446SNeilBrown svc_sock_names(buf+strlen(buf)+1, nfsd_serv, buf); 6013dfb4210SNeilBrown } 602b41b66d6SNeilBrown /* Decrease the count, but don't shutdown the 603b41b66d6SNeilBrown * the service 604b41b66d6SNeilBrown */ 605cda9e0cdSNeilBrown lock_kernel(); 606b41b66d6SNeilBrown nfsd_serv->sv_nrthreads--; 607cda9e0cdSNeilBrown unlock_kernel(); 608b41b66d6SNeilBrown } 6095680c446SNeilBrown return err < 0 ? err : 0; 610b41b66d6SNeilBrown } 611a217813fSTom Tucker if (buf[0] == '-' && isdigit(buf[1])) { 612b41b66d6SNeilBrown char *toclose = kstrdup(buf+1, GFP_KERNEL); 613b41b66d6SNeilBrown int len = 0; 614b41b66d6SNeilBrown if (!toclose) 615b41b66d6SNeilBrown return -ENOMEM; 616b41b66d6SNeilBrown lock_kernel(); 617b41b66d6SNeilBrown if (nfsd_serv) 618b41b66d6SNeilBrown len = svc_sock_names(buf, nfsd_serv, toclose); 619b41b66d6SNeilBrown unlock_kernel(); 62037a03472SNeilBrown if (len >= 0) 62137a03472SNeilBrown lockd_down(); 622b41b66d6SNeilBrown kfree(toclose); 623b41b66d6SNeilBrown return len; 624b41b66d6SNeilBrown } 625a217813fSTom Tucker /* 626a217813fSTom Tucker * Add a transport listener by writing it's transport name 627a217813fSTom Tucker */ 628a217813fSTom Tucker if (isalpha(buf[0])) { 629a217813fSTom Tucker int err; 630a217813fSTom Tucker char transport[16]; 631a217813fSTom Tucker int port; 632a217813fSTom Tucker if (sscanf(buf, "%15s %4d", transport, &port) == 2) { 633a217813fSTom Tucker err = nfsd_create_serv(); 634a217813fSTom Tucker if (!err) { 635a217813fSTom Tucker err = svc_create_xprt(nfsd_serv, 636a217813fSTom Tucker transport, port, 637a217813fSTom Tucker SVC_SOCK_ANONYMOUS); 638a217813fSTom Tucker if (err == -ENOENT) 639a217813fSTom Tucker /* Give a reasonable perror msg for 640a217813fSTom Tucker * bad transport string */ 641a217813fSTom Tucker err = -EPROTONOSUPPORT; 642a217813fSTom Tucker } 643a217813fSTom Tucker return err < 0 ? err : 0; 644a217813fSTom Tucker } 645a217813fSTom Tucker } 646a217813fSTom Tucker /* 647a217813fSTom Tucker * Remove a transport by writing it's transport name and port number 648a217813fSTom Tucker */ 649a217813fSTom Tucker if (buf[0] == '-' && isalpha(buf[1])) { 650a217813fSTom Tucker struct svc_xprt *xprt; 651a217813fSTom Tucker int err = -EINVAL; 652a217813fSTom Tucker char transport[16]; 653a217813fSTom Tucker int port; 654a217813fSTom Tucker if (sscanf(&buf[1], "%15s %4d", transport, &port) == 2) { 655a217813fSTom Tucker if (port == 0) 656a217813fSTom Tucker return -EINVAL; 657a217813fSTom Tucker lock_kernel(); 658a217813fSTom Tucker if (nfsd_serv) { 659a217813fSTom Tucker xprt = svc_find_xprt(nfsd_serv, transport, 660a217813fSTom Tucker AF_UNSPEC, port); 661a217813fSTom Tucker if (xprt) { 662a217813fSTom Tucker svc_close_xprt(xprt); 663a217813fSTom Tucker svc_xprt_put(xprt); 664a217813fSTom Tucker err = 0; 665a217813fSTom Tucker } else 666a217813fSTom Tucker err = -ENOTCONN; 667a217813fSTom Tucker } 668a217813fSTom Tucker unlock_kernel(); 669a217813fSTom Tucker return err < 0 ? err : 0; 670a217813fSTom Tucker } 671a217813fSTom Tucker } 672b41b66d6SNeilBrown return -EINVAL; 673b41b66d6SNeilBrown } 67480212d59SNeilBrown 675596bbe53SNeilBrown int nfsd_max_blksize; 676596bbe53SNeilBrown 677596bbe53SNeilBrown static ssize_t write_maxblksize(struct file *file, char *buf, size_t size) 678596bbe53SNeilBrown { 679596bbe53SNeilBrown char *mesg = buf; 680596bbe53SNeilBrown if (size > 0) { 681596bbe53SNeilBrown int bsize; 682596bbe53SNeilBrown int rv = get_int(&mesg, &bsize); 683596bbe53SNeilBrown if (rv) 684596bbe53SNeilBrown return rv; 685596bbe53SNeilBrown /* force bsize into allowed range and 686596bbe53SNeilBrown * required alignment. 687596bbe53SNeilBrown */ 688596bbe53SNeilBrown if (bsize < 1024) 689596bbe53SNeilBrown bsize = 1024; 690596bbe53SNeilBrown if (bsize > NFSSVC_MAXBLKSIZE) 691596bbe53SNeilBrown bsize = NFSSVC_MAXBLKSIZE; 692596bbe53SNeilBrown bsize &= ~(1024-1); 693596bbe53SNeilBrown lock_kernel(); 694596bbe53SNeilBrown if (nfsd_serv && nfsd_serv->sv_nrthreads) { 695596bbe53SNeilBrown unlock_kernel(); 696596bbe53SNeilBrown return -EBUSY; 697596bbe53SNeilBrown } 698596bbe53SNeilBrown nfsd_max_blksize = bsize; 699596bbe53SNeilBrown unlock_kernel(); 700596bbe53SNeilBrown } 701596bbe53SNeilBrown return sprintf(buf, "%d\n", nfsd_max_blksize); 702596bbe53SNeilBrown } 703596bbe53SNeilBrown 70470c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 7051da177e4SLinus Torvalds extern time_t nfs4_leasetime(void); 7061da177e4SLinus Torvalds 7071da177e4SLinus Torvalds static ssize_t write_leasetime(struct file *file, char *buf, size_t size) 7081da177e4SLinus Torvalds { 7091da177e4SLinus Torvalds /* if size > 10 seconds, call 7101da177e4SLinus Torvalds * nfs4_reset_lease() then write out the new lease (seconds) as reply 7111da177e4SLinus Torvalds */ 7121da177e4SLinus Torvalds char *mesg = buf; 7131da177e4SLinus Torvalds int rv; 7141da177e4SLinus Torvalds 7151da177e4SLinus Torvalds if (size > 0) { 7161da177e4SLinus Torvalds int lease; 7171da177e4SLinus Torvalds rv = get_int(&mesg, &lease); 7181da177e4SLinus Torvalds if (rv) 7191da177e4SLinus Torvalds return rv; 7201da177e4SLinus Torvalds if (lease < 10 || lease > 3600) 7211da177e4SLinus Torvalds return -EINVAL; 7221da177e4SLinus Torvalds nfs4_reset_lease(lease); 7231da177e4SLinus Torvalds } 7241da177e4SLinus Torvalds sprintf(buf, "%ld\n", nfs4_lease_time()); 7251da177e4SLinus Torvalds return strlen(buf); 7261da177e4SLinus Torvalds } 7271da177e4SLinus Torvalds 7280964a3d3SNeilBrown static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) 7290964a3d3SNeilBrown { 7300964a3d3SNeilBrown char *mesg = buf; 7310964a3d3SNeilBrown char *recdir; 7320964a3d3SNeilBrown int len, status; 7330964a3d3SNeilBrown 73487d26ea7SJ. Bruce Fields if (size == 0 || size > PATH_MAX || buf[size-1] != '\n') 7350964a3d3SNeilBrown return -EINVAL; 7360964a3d3SNeilBrown buf[size-1] = 0; 7370964a3d3SNeilBrown 7380964a3d3SNeilBrown recdir = mesg; 7390964a3d3SNeilBrown len = qword_get(&mesg, recdir, size); 7400964a3d3SNeilBrown if (len <= 0) 7410964a3d3SNeilBrown return -EINVAL; 7420964a3d3SNeilBrown 7430964a3d3SNeilBrown status = nfs4_reset_recoverydir(recdir); 7440964a3d3SNeilBrown return strlen(buf); 7450964a3d3SNeilBrown } 74670c3b76cSNeilBrown #endif 7470964a3d3SNeilBrown 7481da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 7491da177e4SLinus Torvalds /* 7501da177e4SLinus Torvalds * populating the filesystem. 7511da177e4SLinus Torvalds */ 7521da177e4SLinus Torvalds 7531da177e4SLinus Torvalds static int nfsd_fill_super(struct super_block * sb, void * data, int silent) 7541da177e4SLinus Torvalds { 7551da177e4SLinus Torvalds static struct tree_descr nfsd_files[] = { 7561da177e4SLinus Torvalds [NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR}, 7571da177e4SLinus Torvalds [NFSD_Add] = {".add", &transaction_ops, S_IWUSR}, 7581da177e4SLinus Torvalds [NFSD_Del] = {".del", &transaction_ops, S_IWUSR}, 7591da177e4SLinus Torvalds [NFSD_Export] = {".export", &transaction_ops, S_IWUSR}, 7601da177e4SLinus Torvalds [NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR}, 7611da177e4SLinus Torvalds [NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR}, 7621da177e4SLinus Torvalds [NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR}, 7631da177e4SLinus Torvalds [NFSD_List] = {"exports", &exports_operations, S_IRUGO}, 7644373ea84SWendy Cheng [NFSD_FO_UnlockIP] = {"unlock_ip", 7654373ea84SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 766*17efa372SWendy Cheng [NFSD_FO_UnlockFS] = {"unlock_filesystem", 767*17efa372SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 7681da177e4SLinus Torvalds [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, 7691da177e4SLinus Torvalds [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, 770eed2965aSGreg Banks [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR}, 77170c3b76cSNeilBrown [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, 77280212d59SNeilBrown [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, 773596bbe53SNeilBrown [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO}, 7741da177e4SLinus Torvalds #ifdef CONFIG_NFSD_V4 7751da177e4SLinus Torvalds [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, 7760964a3d3SNeilBrown [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, 7771da177e4SLinus Torvalds #endif 7781da177e4SLinus Torvalds /* last one */ {""} 7791da177e4SLinus Torvalds }; 7801da177e4SLinus Torvalds return simple_fill_super(sb, 0x6e667364, nfsd_files); 7811da177e4SLinus Torvalds } 7821da177e4SLinus Torvalds 783454e2398SDavid Howells static int nfsd_get_sb(struct file_system_type *fs_type, 784454e2398SDavid Howells int flags, const char *dev_name, void *data, struct vfsmount *mnt) 7851da177e4SLinus Torvalds { 786454e2398SDavid Howells return get_sb_single(fs_type, flags, data, nfsd_fill_super, mnt); 7871da177e4SLinus Torvalds } 7881da177e4SLinus Torvalds 7891da177e4SLinus Torvalds static struct file_system_type nfsd_fs_type = { 7901da177e4SLinus Torvalds .owner = THIS_MODULE, 7911da177e4SLinus Torvalds .name = "nfsd", 7921da177e4SLinus Torvalds .get_sb = nfsd_get_sb, 7931da177e4SLinus Torvalds .kill_sb = kill_litter_super, 7941da177e4SLinus Torvalds }; 7951da177e4SLinus Torvalds 796e331f606SJ. Bruce Fields #ifdef CONFIG_PROC_FS 797e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 798e331f606SJ. Bruce Fields { 799e331f606SJ. Bruce Fields struct proc_dir_entry *entry; 800e331f606SJ. Bruce Fields 801e331f606SJ. Bruce Fields entry = proc_mkdir("fs/nfs", NULL); 802e331f606SJ. Bruce Fields if (!entry) 803e331f606SJ. Bruce Fields return -ENOMEM; 804e331f606SJ. Bruce Fields entry = create_proc_entry("fs/nfs/exports", 0, NULL); 805e331f606SJ. Bruce Fields if (!entry) 806e331f606SJ. Bruce Fields return -ENOMEM; 807e331f606SJ. Bruce Fields entry->proc_fops = &exports_operations; 808e331f606SJ. Bruce Fields return 0; 809e331f606SJ. Bruce Fields } 810e331f606SJ. Bruce Fields #else /* CONFIG_PROC_FS */ 811e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 812e331f606SJ. Bruce Fields { 813e331f606SJ. Bruce Fields return 0; 814e331f606SJ. Bruce Fields } 815e331f606SJ. Bruce Fields #endif 816e331f606SJ. Bruce Fields 8171da177e4SLinus Torvalds static int __init init_nfsd(void) 8181da177e4SLinus Torvalds { 8191da177e4SLinus Torvalds int retval; 8201da177e4SLinus Torvalds printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n"); 8211da177e4SLinus Torvalds 822e8ff2a84SJ. Bruce Fields retval = nfs4_state_init(); /* nfs4 locking state */ 823e8ff2a84SJ. Bruce Fields if (retval) 824e8ff2a84SJ. Bruce Fields return retval; 8251da177e4SLinus Torvalds nfsd_stat_init(); /* Statistics */ 826d5c3428bSJ. Bruce Fields retval = nfsd_reply_cache_init(); 827d5c3428bSJ. Bruce Fields if (retval) 828d5c3428bSJ. Bruce Fields goto out_free_stat; 829dbf847ecSJ. Bruce Fields retval = nfsd_export_init(); 830dbf847ecSJ. Bruce Fields if (retval) 831dbf847ecSJ. Bruce Fields goto out_free_cache; 8321da177e4SLinus Torvalds nfsd_lockd_init(); /* lockd->nfsd callbacks */ 833dbf847ecSJ. Bruce Fields retval = nfsd_idmap_init(); 834dbf847ecSJ. Bruce Fields if (retval) 835dbf847ecSJ. Bruce Fields goto out_free_lockd; 836e331f606SJ. Bruce Fields retval = create_proc_exports_entry(); 837e331f606SJ. Bruce Fields if (retval) 838e331f606SJ. Bruce Fields goto out_free_idmap; 8391da177e4SLinus Torvalds retval = register_filesystem(&nfsd_fs_type); 84026808d3fSJ. Bruce Fields if (retval) 84126808d3fSJ. Bruce Fields goto out_free_all; 84226808d3fSJ. Bruce Fields return 0; 84326808d3fSJ. Bruce Fields out_free_all: 8441da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 8451da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 846e331f606SJ. Bruce Fields out_free_idmap: 847dbf847ecSJ. Bruce Fields nfsd_idmap_shutdown(); 848dbf847ecSJ. Bruce Fields out_free_lockd: 8491da177e4SLinus Torvalds nfsd_lockd_shutdown(); 850e331f606SJ. Bruce Fields nfsd_export_shutdown(); 851dbf847ecSJ. Bruce Fields out_free_cache: 852e331f606SJ. Bruce Fields nfsd_reply_cache_shutdown(); 853d5c3428bSJ. Bruce Fields out_free_stat: 854d5c3428bSJ. Bruce Fields nfsd_stat_shutdown(); 85546b25895SJ. Bruce Fields nfsd4_free_slabs(); 8561da177e4SLinus Torvalds return retval; 8571da177e4SLinus Torvalds } 8581da177e4SLinus Torvalds 8591da177e4SLinus Torvalds static void __exit exit_nfsd(void) 8601da177e4SLinus Torvalds { 8611da177e4SLinus Torvalds nfsd_export_shutdown(); 862d5c3428bSJ. Bruce Fields nfsd_reply_cache_shutdown(); 8631da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 8641da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 8651da177e4SLinus Torvalds nfsd_stat_shutdown(); 8661da177e4SLinus Torvalds nfsd_lockd_shutdown(); 8671da177e4SLinus Torvalds nfsd_idmap_shutdown(); 868e8ff2a84SJ. Bruce Fields nfsd4_free_slabs(); 8691da177e4SLinus Torvalds unregister_filesystem(&nfsd_fs_type); 8701da177e4SLinus Torvalds } 8711da177e4SLinus Torvalds 8721da177e4SLinus Torvalds MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); 8731da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 8741da177e4SLinus Torvalds module_init(init_nfsd) 8751da177e4SLinus Torvalds module_exit(exit_nfsd) 876