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, 5917efa372SWendy 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); 9717efa372SWendy 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, 10917efa372SWendy 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, 1729ef2db26SDenis V. Lunev .owner = THIS_MODULE, 1731da177e4SLinus Torvalds }; 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 1761da177e4SLinus Torvalds /* 1771da177e4SLinus Torvalds * payload - write methods 1781da177e4SLinus Torvalds * If the method has a response, the response should be put in buf, 1791da177e4SLinus Torvalds * and the length returned. Otherwise return 0 or and -error. 1801da177e4SLinus Torvalds */ 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds static ssize_t write_svc(struct file *file, char *buf, size_t size) 1831da177e4SLinus Torvalds { 1841da177e4SLinus Torvalds struct nfsctl_svc *data; 1851da177e4SLinus Torvalds if (size < sizeof(*data)) 1861da177e4SLinus Torvalds return -EINVAL; 1871da177e4SLinus Torvalds data = (struct nfsctl_svc*) buf; 1881da177e4SLinus Torvalds return nfsd_svc(data->svc_port, data->svc_nthreads); 1891da177e4SLinus Torvalds } 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds static ssize_t write_add(struct file *file, char *buf, size_t size) 1921da177e4SLinus Torvalds { 1931da177e4SLinus Torvalds struct nfsctl_client *data; 1941da177e4SLinus Torvalds if (size < sizeof(*data)) 1951da177e4SLinus Torvalds return -EINVAL; 1961da177e4SLinus Torvalds data = (struct nfsctl_client *)buf; 1971da177e4SLinus Torvalds return exp_addclient(data); 1981da177e4SLinus Torvalds } 1991da177e4SLinus Torvalds 2001da177e4SLinus Torvalds static ssize_t write_del(struct file *file, char *buf, size_t size) 2011da177e4SLinus Torvalds { 2021da177e4SLinus Torvalds struct nfsctl_client *data; 2031da177e4SLinus Torvalds if (size < sizeof(*data)) 2041da177e4SLinus Torvalds return -EINVAL; 2051da177e4SLinus Torvalds data = (struct nfsctl_client *)buf; 2061da177e4SLinus Torvalds return exp_delclient(data); 2071da177e4SLinus Torvalds } 2081da177e4SLinus Torvalds 2091da177e4SLinus Torvalds static ssize_t write_export(struct file *file, char *buf, size_t size) 2101da177e4SLinus Torvalds { 2111da177e4SLinus Torvalds struct nfsctl_export *data; 2121da177e4SLinus Torvalds if (size < sizeof(*data)) 2131da177e4SLinus Torvalds return -EINVAL; 2141da177e4SLinus Torvalds data = (struct nfsctl_export*)buf; 2151da177e4SLinus Torvalds return exp_export(data); 2161da177e4SLinus Torvalds } 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds static ssize_t write_unexport(struct file *file, char *buf, size_t size) 2191da177e4SLinus Torvalds { 2201da177e4SLinus Torvalds struct nfsctl_export *data; 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvalds if (size < sizeof(*data)) 2231da177e4SLinus Torvalds return -EINVAL; 2241da177e4SLinus Torvalds data = (struct nfsctl_export*)buf; 2251da177e4SLinus Torvalds return exp_unexport(data); 2261da177e4SLinus Torvalds } 2271da177e4SLinus Torvalds 2281da177e4SLinus Torvalds static ssize_t write_getfs(struct file *file, char *buf, size_t size) 2291da177e4SLinus Torvalds { 2301da177e4SLinus Torvalds struct nfsctl_fsparm *data; 2311da177e4SLinus Torvalds struct sockaddr_in *sin; 2321da177e4SLinus Torvalds struct auth_domain *clp; 2331da177e4SLinus Torvalds int err = 0; 2341da177e4SLinus Torvalds struct knfsd_fh *res; 235f15364bdSAurélien Charbon struct in6_addr in6; 2361da177e4SLinus Torvalds 2371da177e4SLinus Torvalds if (size < sizeof(*data)) 2381da177e4SLinus Torvalds return -EINVAL; 2391da177e4SLinus Torvalds data = (struct nfsctl_fsparm*)buf; 2401da177e4SLinus Torvalds err = -EPROTONOSUPPORT; 2411da177e4SLinus Torvalds if (data->gd_addr.sa_family != AF_INET) 2421da177e4SLinus Torvalds goto out; 2431da177e4SLinus Torvalds sin = (struct sockaddr_in *)&data->gd_addr; 2441da177e4SLinus Torvalds if (data->gd_maxlen > NFS3_FHSIZE) 2451da177e4SLinus Torvalds data->gd_maxlen = NFS3_FHSIZE; 2461da177e4SLinus Torvalds 2471da177e4SLinus Torvalds res = (struct knfsd_fh*)buf; 2481da177e4SLinus Torvalds 2491da177e4SLinus Torvalds exp_readlock(); 250f15364bdSAurélien Charbon 251f15364bdSAurélien Charbon ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6); 252f15364bdSAurélien Charbon 253f15364bdSAurélien Charbon clp = auth_unix_lookup(&in6); 254f15364bdSAurélien Charbon if (!clp) 2551da177e4SLinus Torvalds err = -EPERM; 2561da177e4SLinus Torvalds else { 2571da177e4SLinus Torvalds err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen); 2581da177e4SLinus Torvalds auth_domain_put(clp); 2591da177e4SLinus Torvalds } 2601da177e4SLinus Torvalds exp_readunlock(); 2611da177e4SLinus Torvalds if (err == 0) 26212127498SAndrew Morton err = res->fh_size + offsetof(struct knfsd_fh, fh_base); 2631da177e4SLinus Torvalds out: 2641da177e4SLinus Torvalds return err; 2651da177e4SLinus Torvalds } 2661da177e4SLinus Torvalds 2671da177e4SLinus Torvalds static ssize_t write_getfd(struct file *file, char *buf, size_t size) 2681da177e4SLinus Torvalds { 2691da177e4SLinus Torvalds struct nfsctl_fdparm *data; 2701da177e4SLinus Torvalds struct sockaddr_in *sin; 2711da177e4SLinus Torvalds struct auth_domain *clp; 2721da177e4SLinus Torvalds int err = 0; 2731da177e4SLinus Torvalds struct knfsd_fh fh; 2741da177e4SLinus Torvalds char *res; 275f15364bdSAurélien Charbon struct in6_addr in6; 2761da177e4SLinus Torvalds 2771da177e4SLinus Torvalds if (size < sizeof(*data)) 2781da177e4SLinus Torvalds return -EINVAL; 2791da177e4SLinus Torvalds data = (struct nfsctl_fdparm*)buf; 2801da177e4SLinus Torvalds err = -EPROTONOSUPPORT; 2811da177e4SLinus Torvalds if (data->gd_addr.sa_family != AF_INET) 2821da177e4SLinus Torvalds goto out; 2831da177e4SLinus Torvalds err = -EINVAL; 2841da177e4SLinus Torvalds if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS) 2851da177e4SLinus Torvalds goto out; 2861da177e4SLinus Torvalds 2871da177e4SLinus Torvalds res = buf; 2881da177e4SLinus Torvalds sin = (struct sockaddr_in *)&data->gd_addr; 2891da177e4SLinus Torvalds exp_readlock(); 290f15364bdSAurélien Charbon 291f15364bdSAurélien Charbon ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6); 292f15364bdSAurélien Charbon 293f15364bdSAurélien Charbon clp = auth_unix_lookup(&in6); 294f15364bdSAurélien Charbon if (!clp) 2951da177e4SLinus Torvalds err = -EPERM; 2961da177e4SLinus Torvalds else { 2971da177e4SLinus Torvalds err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE); 2981da177e4SLinus Torvalds auth_domain_put(clp); 2991da177e4SLinus Torvalds } 3001da177e4SLinus Torvalds exp_readunlock(); 3011da177e4SLinus Torvalds 3021da177e4SLinus Torvalds if (err == 0) { 3031da177e4SLinus Torvalds memset(res,0, NFS_FHSIZE); 3041da177e4SLinus Torvalds memcpy(res, &fh.fh_base, fh.fh_size); 3051da177e4SLinus Torvalds err = NFS_FHSIZE; 3061da177e4SLinus Torvalds } 3071da177e4SLinus Torvalds out: 3081da177e4SLinus Torvalds return err; 3091da177e4SLinus Torvalds } 3101da177e4SLinus Torvalds 3114373ea84SWendy Cheng static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size) 3124373ea84SWendy Cheng { 3134373ea84SWendy Cheng __be32 server_ip; 3144373ea84SWendy Cheng char *fo_path, c; 3154373ea84SWendy Cheng int b1, b2, b3, b4; 3164373ea84SWendy Cheng 3174373ea84SWendy Cheng /* sanity check */ 3184373ea84SWendy Cheng if (size == 0) 3194373ea84SWendy Cheng return -EINVAL; 3204373ea84SWendy Cheng 3214373ea84SWendy Cheng if (buf[size-1] != '\n') 3224373ea84SWendy Cheng return -EINVAL; 3234373ea84SWendy Cheng 3244373ea84SWendy Cheng fo_path = buf; 3254373ea84SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 3264373ea84SWendy Cheng return -EINVAL; 3274373ea84SWendy Cheng 3284373ea84SWendy Cheng /* get ipv4 address */ 3294373ea84SWendy Cheng if (sscanf(fo_path, "%u.%u.%u.%u%c", &b1, &b2, &b3, &b4, &c) != 4) 3304373ea84SWendy Cheng return -EINVAL; 3314373ea84SWendy Cheng server_ip = htonl((((((b1<<8)|b2)<<8)|b3)<<8)|b4); 3324373ea84SWendy Cheng 3334373ea84SWendy Cheng return nlmsvc_unlock_all_by_ip(server_ip); 3344373ea84SWendy Cheng } 3354373ea84SWendy Cheng 33617efa372SWendy Cheng static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size) 33717efa372SWendy Cheng { 33817efa372SWendy Cheng struct nameidata nd; 33917efa372SWendy Cheng char *fo_path; 34017efa372SWendy Cheng int error; 34117efa372SWendy Cheng 34217efa372SWendy Cheng /* sanity check */ 34317efa372SWendy Cheng if (size == 0) 34417efa372SWendy Cheng return -EINVAL; 34517efa372SWendy Cheng 34617efa372SWendy Cheng if (buf[size-1] != '\n') 34717efa372SWendy Cheng return -EINVAL; 34817efa372SWendy Cheng 34917efa372SWendy Cheng fo_path = buf; 35017efa372SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 35117efa372SWendy Cheng return -EINVAL; 35217efa372SWendy Cheng 35317efa372SWendy Cheng error = path_lookup(fo_path, 0, &nd); 35417efa372SWendy Cheng if (error) 35517efa372SWendy Cheng return error; 35617efa372SWendy Cheng 35717efa372SWendy Cheng error = nlmsvc_unlock_all_by_sb(nd.path.mnt->mnt_sb); 35817efa372SWendy Cheng 35917efa372SWendy Cheng path_put(&nd.path); 36017efa372SWendy Cheng return error; 36117efa372SWendy Cheng } 36217efa372SWendy Cheng 3631da177e4SLinus Torvalds static ssize_t write_filehandle(struct file *file, char *buf, size_t size) 3641da177e4SLinus Torvalds { 3651da177e4SLinus Torvalds /* request is: 3661da177e4SLinus Torvalds * domain path maxsize 3671da177e4SLinus Torvalds * response is 3681da177e4SLinus Torvalds * filehandle 3691da177e4SLinus Torvalds * 3701da177e4SLinus Torvalds * qword quoting is used, so filehandle will be \x.... 3711da177e4SLinus Torvalds */ 3721da177e4SLinus Torvalds char *dname, *path; 373246d95baSAndrew Morton int uninitialized_var(maxsize); 3741da177e4SLinus Torvalds char *mesg = buf; 3751da177e4SLinus Torvalds int len; 3761da177e4SLinus Torvalds struct auth_domain *dom; 3771da177e4SLinus Torvalds struct knfsd_fh fh; 3781da177e4SLinus Torvalds 37987d26ea7SJ. Bruce Fields if (size == 0) 38087d26ea7SJ. Bruce Fields return -EINVAL; 38187d26ea7SJ. Bruce Fields 3821da177e4SLinus Torvalds if (buf[size-1] != '\n') 3831da177e4SLinus Torvalds return -EINVAL; 3841da177e4SLinus Torvalds buf[size-1] = 0; 3851da177e4SLinus Torvalds 3861da177e4SLinus Torvalds dname = mesg; 3871da177e4SLinus Torvalds len = qword_get(&mesg, dname, size); 3881da177e4SLinus Torvalds if (len <= 0) return -EINVAL; 3891da177e4SLinus Torvalds 3901da177e4SLinus Torvalds path = dname+len+1; 3911da177e4SLinus Torvalds len = qword_get(&mesg, path, size); 3921da177e4SLinus Torvalds if (len <= 0) return -EINVAL; 3931da177e4SLinus Torvalds 3941da177e4SLinus Torvalds len = get_int(&mesg, &maxsize); 3951da177e4SLinus Torvalds if (len) 3961da177e4SLinus Torvalds return len; 3971da177e4SLinus Torvalds 3981da177e4SLinus Torvalds if (maxsize < NFS_FHSIZE) 3991da177e4SLinus Torvalds return -EINVAL; 4001da177e4SLinus Torvalds if (maxsize > NFS3_FHSIZE) 4011da177e4SLinus Torvalds maxsize = NFS3_FHSIZE; 4021da177e4SLinus Torvalds 4031da177e4SLinus Torvalds if (qword_get(&mesg, mesg, size)>0) 4041da177e4SLinus Torvalds return -EINVAL; 4051da177e4SLinus Torvalds 4061da177e4SLinus Torvalds /* we have all the words, they are in buf.. */ 4071da177e4SLinus Torvalds dom = unix_domain_find(dname); 4081da177e4SLinus Torvalds if (!dom) 4091da177e4SLinus Torvalds return -ENOMEM; 4101da177e4SLinus Torvalds 4111da177e4SLinus Torvalds len = exp_rootfh(dom, path, &fh, maxsize); 4121da177e4SLinus Torvalds auth_domain_put(dom); 4131da177e4SLinus Torvalds if (len) 4141da177e4SLinus Torvalds return len; 4151da177e4SLinus Torvalds 4161da177e4SLinus Torvalds mesg = buf; len = SIMPLE_TRANSACTION_LIMIT; 4171da177e4SLinus Torvalds qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size); 4181da177e4SLinus Torvalds mesg[-1] = '\n'; 4191da177e4SLinus Torvalds return mesg - buf; 4201da177e4SLinus Torvalds } 4211da177e4SLinus Torvalds 4221da177e4SLinus Torvalds static ssize_t write_threads(struct file *file, char *buf, size_t size) 4231da177e4SLinus Torvalds { 4241da177e4SLinus Torvalds /* if size > 0, look for a number of threads and call nfsd_svc 4251da177e4SLinus Torvalds * then write out number of threads as reply 4261da177e4SLinus Torvalds */ 4271da177e4SLinus Torvalds char *mesg = buf; 4281da177e4SLinus Torvalds int rv; 4291da177e4SLinus Torvalds if (size > 0) { 4301da177e4SLinus Torvalds int newthreads; 4311da177e4SLinus Torvalds rv = get_int(&mesg, &newthreads); 4321da177e4SLinus Torvalds if (rv) 4331da177e4SLinus Torvalds return rv; 4341da177e4SLinus Torvalds if (newthreads <0) 4351da177e4SLinus Torvalds return -EINVAL; 4361da177e4SLinus Torvalds rv = nfsd_svc(2049, newthreads); 4371da177e4SLinus Torvalds if (rv) 4381da177e4SLinus Torvalds return rv; 4391da177e4SLinus Torvalds } 4401da177e4SLinus Torvalds sprintf(buf, "%d\n", nfsd_nrthreads()); 4411da177e4SLinus Torvalds return strlen(buf); 4421da177e4SLinus Torvalds } 4431da177e4SLinus Torvalds 444eed2965aSGreg Banks static ssize_t write_pool_threads(struct file *file, char *buf, size_t size) 445eed2965aSGreg Banks { 446eed2965aSGreg Banks /* if size > 0, look for an array of number of threads per node 447eed2965aSGreg Banks * and apply them then write out number of threads per node as reply 448eed2965aSGreg Banks */ 449eed2965aSGreg Banks char *mesg = buf; 450eed2965aSGreg Banks int i; 451eed2965aSGreg Banks int rv; 452eed2965aSGreg Banks int len; 453bedbdd8bSNeil Brown int npools; 454eed2965aSGreg Banks int *nthreads; 455eed2965aSGreg Banks 456bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 457bedbdd8bSNeil Brown npools = nfsd_nrpools(); 458eed2965aSGreg Banks if (npools == 0) { 459eed2965aSGreg Banks /* 460eed2965aSGreg Banks * NFS is shut down. The admin can start it by 461eed2965aSGreg Banks * writing to the threads file but NOT the pool_threads 462eed2965aSGreg Banks * file, sorry. Report zero threads. 463eed2965aSGreg Banks */ 464bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 465eed2965aSGreg Banks strcpy(buf, "0\n"); 466eed2965aSGreg Banks return strlen(buf); 467eed2965aSGreg Banks } 468eed2965aSGreg Banks 469eed2965aSGreg Banks nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL); 470bedbdd8bSNeil Brown rv = -ENOMEM; 471eed2965aSGreg Banks if (nthreads == NULL) 472bedbdd8bSNeil Brown goto out_free; 473eed2965aSGreg Banks 474eed2965aSGreg Banks if (size > 0) { 475eed2965aSGreg Banks for (i = 0; i < npools; i++) { 476eed2965aSGreg Banks rv = get_int(&mesg, &nthreads[i]); 477eed2965aSGreg Banks if (rv == -ENOENT) 478eed2965aSGreg Banks break; /* fewer numbers than pools */ 479eed2965aSGreg Banks if (rv) 480eed2965aSGreg Banks goto out_free; /* syntax error */ 481eed2965aSGreg Banks rv = -EINVAL; 482eed2965aSGreg Banks if (nthreads[i] < 0) 483eed2965aSGreg Banks goto out_free; 484eed2965aSGreg Banks } 485eed2965aSGreg Banks rv = nfsd_set_nrthreads(i, nthreads); 486eed2965aSGreg Banks if (rv) 487eed2965aSGreg Banks goto out_free; 488eed2965aSGreg Banks } 489eed2965aSGreg Banks 490eed2965aSGreg Banks rv = nfsd_get_nrthreads(npools, nthreads); 491eed2965aSGreg Banks if (rv) 492eed2965aSGreg Banks goto out_free; 493eed2965aSGreg Banks 494eed2965aSGreg Banks mesg = buf; 495eed2965aSGreg Banks size = SIMPLE_TRANSACTION_LIMIT; 496eed2965aSGreg Banks for (i = 0; i < npools && size > 0; i++) { 497eed2965aSGreg Banks snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' ')); 498eed2965aSGreg Banks len = strlen(mesg); 499eed2965aSGreg Banks size -= len; 500eed2965aSGreg Banks mesg += len; 501eed2965aSGreg Banks } 502eed2965aSGreg Banks 503bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 504eed2965aSGreg Banks return (mesg-buf); 505eed2965aSGreg Banks 506eed2965aSGreg Banks out_free: 507eed2965aSGreg Banks kfree(nthreads); 508bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 509eed2965aSGreg Banks return rv; 510eed2965aSGreg Banks } 511eed2965aSGreg Banks 512*3dd98a3bSJeff Layton static ssize_t __write_versions(struct file *file, char *buf, size_t size) 51370c3b76cSNeilBrown { 51470c3b76cSNeilBrown /* 51570c3b76cSNeilBrown * Format: 51670c3b76cSNeilBrown * [-/+]vers [-/+]vers ... 51770c3b76cSNeilBrown */ 51870c3b76cSNeilBrown char *mesg = buf; 51970c3b76cSNeilBrown char *vers, sign; 52070c3b76cSNeilBrown int len, num; 52170c3b76cSNeilBrown ssize_t tlen = 0; 52270c3b76cSNeilBrown char *sep; 52370c3b76cSNeilBrown 52470c3b76cSNeilBrown if (size>0) { 52570c3b76cSNeilBrown if (nfsd_serv) 5266658d3a7SNeilBrown /* Cannot change versions without updating 5276658d3a7SNeilBrown * nfsd_serv->sv_xdrsize, and reallocing 5286658d3a7SNeilBrown * rq_argp and rq_resp 5296658d3a7SNeilBrown */ 53070c3b76cSNeilBrown return -EBUSY; 53170c3b76cSNeilBrown if (buf[size-1] != '\n') 53270c3b76cSNeilBrown return -EINVAL; 53370c3b76cSNeilBrown buf[size-1] = 0; 53470c3b76cSNeilBrown 53570c3b76cSNeilBrown vers = mesg; 53670c3b76cSNeilBrown len = qword_get(&mesg, vers, size); 53770c3b76cSNeilBrown if (len <= 0) return -EINVAL; 53870c3b76cSNeilBrown do { 53970c3b76cSNeilBrown sign = *vers; 54070c3b76cSNeilBrown if (sign == '+' || sign == '-') 54170c3b76cSNeilBrown num = simple_strtol((vers+1), NULL, 0); 54270c3b76cSNeilBrown else 54370c3b76cSNeilBrown num = simple_strtol(vers, NULL, 0); 54470c3b76cSNeilBrown switch(num) { 54570c3b76cSNeilBrown case 2: 54670c3b76cSNeilBrown case 3: 54770c3b76cSNeilBrown case 4: 5486658d3a7SNeilBrown nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET); 54970c3b76cSNeilBrown break; 55070c3b76cSNeilBrown default: 55170c3b76cSNeilBrown return -EINVAL; 55270c3b76cSNeilBrown } 55370c3b76cSNeilBrown vers += len + 1; 55470c3b76cSNeilBrown tlen += len; 55570c3b76cSNeilBrown } while ((len = qword_get(&mesg, vers, size)) > 0); 55670c3b76cSNeilBrown /* If all get turned off, turn them back on, as 55770c3b76cSNeilBrown * having no versions is BAD 55870c3b76cSNeilBrown */ 5596658d3a7SNeilBrown nfsd_reset_versions(); 56070c3b76cSNeilBrown } 56170c3b76cSNeilBrown /* Now write current state into reply buffer */ 56270c3b76cSNeilBrown len = 0; 56370c3b76cSNeilBrown sep = ""; 56470c3b76cSNeilBrown for (num=2 ; num <= 4 ; num++) 5656658d3a7SNeilBrown if (nfsd_vers(num, NFSD_AVAIL)) { 56670c3b76cSNeilBrown len += sprintf(buf+len, "%s%c%d", sep, 5676658d3a7SNeilBrown nfsd_vers(num, NFSD_TEST)?'+':'-', 56870c3b76cSNeilBrown num); 56970c3b76cSNeilBrown sep = " "; 57070c3b76cSNeilBrown } 57170c3b76cSNeilBrown len += sprintf(buf+len, "\n"); 57270c3b76cSNeilBrown return len; 57370c3b76cSNeilBrown } 57470c3b76cSNeilBrown 575*3dd98a3bSJeff Layton static ssize_t write_versions(struct file *file, char *buf, size_t size) 576*3dd98a3bSJeff Layton { 577*3dd98a3bSJeff Layton ssize_t rv; 578*3dd98a3bSJeff Layton 579*3dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 580*3dd98a3bSJeff Layton rv = __write_versions(file, buf, size); 581*3dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 582*3dd98a3bSJeff Layton return rv; 583*3dd98a3bSJeff Layton } 584*3dd98a3bSJeff Layton 585bedbdd8bSNeil Brown static ssize_t __write_ports(struct file *file, char *buf, size_t size) 58680212d59SNeilBrown { 587b41b66d6SNeilBrown if (size == 0) { 58880212d59SNeilBrown int len = 0; 589bedbdd8bSNeil Brown 59080212d59SNeilBrown if (nfsd_serv) 5919571af18STom Tucker len = svc_xprt_names(nfsd_serv, buf, 0); 59280212d59SNeilBrown return len; 59380212d59SNeilBrown } 594b41b66d6SNeilBrown /* Either a single 'fd' number is written, in which 595b41b66d6SNeilBrown * case it must be for a socket of a supported family/protocol, 596b41b66d6SNeilBrown * and we use it as an nfsd socket, or 597b41b66d6SNeilBrown * A '-' followed by the 'name' of a socket in which case 598b41b66d6SNeilBrown * we close the socket. 599b41b66d6SNeilBrown */ 600b41b66d6SNeilBrown if (isdigit(buf[0])) { 601b41b66d6SNeilBrown char *mesg = buf; 602b41b66d6SNeilBrown int fd; 603b41b66d6SNeilBrown int err; 604b41b66d6SNeilBrown err = get_int(&mesg, &fd); 605b41b66d6SNeilBrown if (err) 606b41b66d6SNeilBrown return -EINVAL; 607b41b66d6SNeilBrown if (fd < 0) 608b41b66d6SNeilBrown return -EINVAL; 609b41b66d6SNeilBrown err = nfsd_create_serv(); 610b41b66d6SNeilBrown if (!err) { 611b41b66d6SNeilBrown int proto = 0; 612b41b66d6SNeilBrown err = svc_addsock(nfsd_serv, fd, buf, &proto); 6135680c446SNeilBrown if (err >= 0) { 6145680c446SNeilBrown err = lockd_up(proto); 6155680c446SNeilBrown if (err < 0) 6165680c446SNeilBrown svc_sock_names(buf+strlen(buf)+1, nfsd_serv, buf); 6173dfb4210SNeilBrown } 618b41b66d6SNeilBrown /* Decrease the count, but don't shutdown the 619b41b66d6SNeilBrown * the service 620b41b66d6SNeilBrown */ 621b41b66d6SNeilBrown nfsd_serv->sv_nrthreads--; 622b41b66d6SNeilBrown } 6235680c446SNeilBrown return err < 0 ? err : 0; 624b41b66d6SNeilBrown } 625a217813fSTom Tucker if (buf[0] == '-' && isdigit(buf[1])) { 626b41b66d6SNeilBrown char *toclose = kstrdup(buf+1, GFP_KERNEL); 627b41b66d6SNeilBrown int len = 0; 628b41b66d6SNeilBrown if (!toclose) 629b41b66d6SNeilBrown return -ENOMEM; 630b41b66d6SNeilBrown if (nfsd_serv) 631b41b66d6SNeilBrown len = svc_sock_names(buf, nfsd_serv, toclose); 63237a03472SNeilBrown if (len >= 0) 63337a03472SNeilBrown lockd_down(); 634b41b66d6SNeilBrown kfree(toclose); 635b41b66d6SNeilBrown return len; 636b41b66d6SNeilBrown } 637a217813fSTom Tucker /* 638a217813fSTom Tucker * Add a transport listener by writing it's transport name 639a217813fSTom Tucker */ 640a217813fSTom Tucker if (isalpha(buf[0])) { 641a217813fSTom Tucker int err; 642a217813fSTom Tucker char transport[16]; 643a217813fSTom Tucker int port; 644a217813fSTom Tucker if (sscanf(buf, "%15s %4d", transport, &port) == 2) { 645a217813fSTom Tucker err = nfsd_create_serv(); 646a217813fSTom Tucker if (!err) { 647a217813fSTom Tucker err = svc_create_xprt(nfsd_serv, 648a217813fSTom Tucker transport, port, 649a217813fSTom Tucker SVC_SOCK_ANONYMOUS); 650a217813fSTom Tucker if (err == -ENOENT) 651a217813fSTom Tucker /* Give a reasonable perror msg for 652a217813fSTom Tucker * bad transport string */ 653a217813fSTom Tucker err = -EPROTONOSUPPORT; 654a217813fSTom Tucker } 655a217813fSTom Tucker return err < 0 ? err : 0; 656a217813fSTom Tucker } 657a217813fSTom Tucker } 658a217813fSTom Tucker /* 659a217813fSTom Tucker * Remove a transport by writing it's transport name and port number 660a217813fSTom Tucker */ 661a217813fSTom Tucker if (buf[0] == '-' && isalpha(buf[1])) { 662a217813fSTom Tucker struct svc_xprt *xprt; 663a217813fSTom Tucker int err = -EINVAL; 664a217813fSTom Tucker char transport[16]; 665a217813fSTom Tucker int port; 666a217813fSTom Tucker if (sscanf(&buf[1], "%15s %4d", transport, &port) == 2) { 667a217813fSTom Tucker if (port == 0) 668a217813fSTom Tucker return -EINVAL; 669a217813fSTom Tucker if (nfsd_serv) { 670a217813fSTom Tucker xprt = svc_find_xprt(nfsd_serv, transport, 671a217813fSTom Tucker AF_UNSPEC, port); 672a217813fSTom Tucker if (xprt) { 673a217813fSTom Tucker svc_close_xprt(xprt); 674a217813fSTom Tucker svc_xprt_put(xprt); 675a217813fSTom Tucker err = 0; 676a217813fSTom Tucker } else 677a217813fSTom Tucker err = -ENOTCONN; 678a217813fSTom Tucker } 679a217813fSTom Tucker return err < 0 ? err : 0; 680a217813fSTom Tucker } 681a217813fSTom Tucker } 682b41b66d6SNeilBrown return -EINVAL; 683b41b66d6SNeilBrown } 68480212d59SNeilBrown 685bedbdd8bSNeil Brown static ssize_t write_ports(struct file *file, char *buf, size_t size) 686bedbdd8bSNeil Brown { 687bedbdd8bSNeil Brown ssize_t rv; 688*3dd98a3bSJeff Layton 689bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 690bedbdd8bSNeil Brown rv = __write_ports(file, buf, size); 691bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 692bedbdd8bSNeil Brown return rv; 693bedbdd8bSNeil Brown } 694bedbdd8bSNeil Brown 695bedbdd8bSNeil Brown 696596bbe53SNeilBrown int nfsd_max_blksize; 697596bbe53SNeilBrown 698596bbe53SNeilBrown static ssize_t write_maxblksize(struct file *file, char *buf, size_t size) 699596bbe53SNeilBrown { 700596bbe53SNeilBrown char *mesg = buf; 701596bbe53SNeilBrown if (size > 0) { 702596bbe53SNeilBrown int bsize; 703596bbe53SNeilBrown int rv = get_int(&mesg, &bsize); 704596bbe53SNeilBrown if (rv) 705596bbe53SNeilBrown return rv; 706596bbe53SNeilBrown /* force bsize into allowed range and 707596bbe53SNeilBrown * required alignment. 708596bbe53SNeilBrown */ 709596bbe53SNeilBrown if (bsize < 1024) 710596bbe53SNeilBrown bsize = 1024; 711596bbe53SNeilBrown if (bsize > NFSSVC_MAXBLKSIZE) 712596bbe53SNeilBrown bsize = NFSSVC_MAXBLKSIZE; 713596bbe53SNeilBrown bsize &= ~(1024-1); 714bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 715596bbe53SNeilBrown if (nfsd_serv && nfsd_serv->sv_nrthreads) { 716bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 717596bbe53SNeilBrown return -EBUSY; 718596bbe53SNeilBrown } 719596bbe53SNeilBrown nfsd_max_blksize = bsize; 720bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 721596bbe53SNeilBrown } 722596bbe53SNeilBrown return sprintf(buf, "%d\n", nfsd_max_blksize); 723596bbe53SNeilBrown } 724596bbe53SNeilBrown 72570c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 7261da177e4SLinus Torvalds extern time_t nfs4_leasetime(void); 7271da177e4SLinus Torvalds 728*3dd98a3bSJeff Layton static ssize_t __write_leasetime(struct file *file, char *buf, size_t size) 7291da177e4SLinus Torvalds { 7301da177e4SLinus Torvalds /* if size > 10 seconds, call 7311da177e4SLinus Torvalds * nfs4_reset_lease() then write out the new lease (seconds) as reply 7321da177e4SLinus Torvalds */ 7331da177e4SLinus Torvalds char *mesg = buf; 734*3dd98a3bSJeff Layton int rv, lease; 7351da177e4SLinus Torvalds 7361da177e4SLinus Torvalds if (size > 0) { 737*3dd98a3bSJeff Layton if (nfsd_serv) 738*3dd98a3bSJeff Layton return -EBUSY; 7391da177e4SLinus Torvalds rv = get_int(&mesg, &lease); 7401da177e4SLinus Torvalds if (rv) 7411da177e4SLinus Torvalds return rv; 7421da177e4SLinus Torvalds if (lease < 10 || lease > 3600) 7431da177e4SLinus Torvalds return -EINVAL; 7441da177e4SLinus Torvalds nfs4_reset_lease(lease); 7451da177e4SLinus Torvalds } 7461da177e4SLinus Torvalds sprintf(buf, "%ld\n", nfs4_lease_time()); 7471da177e4SLinus Torvalds return strlen(buf); 7481da177e4SLinus Torvalds } 7491da177e4SLinus Torvalds 750*3dd98a3bSJeff Layton static ssize_t write_leasetime(struct file *file, char *buf, size_t size) 751*3dd98a3bSJeff Layton { 752*3dd98a3bSJeff Layton ssize_t rv; 753*3dd98a3bSJeff Layton 754*3dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 755*3dd98a3bSJeff Layton rv = __write_leasetime(file, buf, size); 756*3dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 757*3dd98a3bSJeff Layton return rv; 758*3dd98a3bSJeff Layton } 759*3dd98a3bSJeff Layton 760*3dd98a3bSJeff Layton extern char *nfs4_recoverydir(void); 761*3dd98a3bSJeff Layton 762*3dd98a3bSJeff Layton static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size) 7630964a3d3SNeilBrown { 7640964a3d3SNeilBrown char *mesg = buf; 7650964a3d3SNeilBrown char *recdir; 7660964a3d3SNeilBrown int len, status; 7670964a3d3SNeilBrown 768*3dd98a3bSJeff Layton if (size > 0) { 769*3dd98a3bSJeff Layton if (nfsd_serv) 770*3dd98a3bSJeff Layton return -EBUSY; 771*3dd98a3bSJeff Layton if (size > PATH_MAX || buf[size-1] != '\n') 7720964a3d3SNeilBrown return -EINVAL; 7730964a3d3SNeilBrown buf[size-1] = 0; 7740964a3d3SNeilBrown 7750964a3d3SNeilBrown recdir = mesg; 7760964a3d3SNeilBrown len = qword_get(&mesg, recdir, size); 7770964a3d3SNeilBrown if (len <= 0) 7780964a3d3SNeilBrown return -EINVAL; 7790964a3d3SNeilBrown 7800964a3d3SNeilBrown status = nfs4_reset_recoverydir(recdir); 781*3dd98a3bSJeff Layton } 782*3dd98a3bSJeff Layton sprintf(buf, "%s\n", nfs4_recoverydir()); 7830964a3d3SNeilBrown return strlen(buf); 7840964a3d3SNeilBrown } 785*3dd98a3bSJeff Layton 786*3dd98a3bSJeff Layton static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) 787*3dd98a3bSJeff Layton { 788*3dd98a3bSJeff Layton ssize_t rv; 789*3dd98a3bSJeff Layton 790*3dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 791*3dd98a3bSJeff Layton rv = __write_recoverydir(file, buf, size); 792*3dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 793*3dd98a3bSJeff Layton return rv; 794*3dd98a3bSJeff Layton } 795*3dd98a3bSJeff Layton 79670c3b76cSNeilBrown #endif 7970964a3d3SNeilBrown 7981da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 7991da177e4SLinus Torvalds /* 8001da177e4SLinus Torvalds * populating the filesystem. 8011da177e4SLinus Torvalds */ 8021da177e4SLinus Torvalds 8031da177e4SLinus Torvalds static int nfsd_fill_super(struct super_block * sb, void * data, int silent) 8041da177e4SLinus Torvalds { 8051da177e4SLinus Torvalds static struct tree_descr nfsd_files[] = { 8061da177e4SLinus Torvalds [NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR}, 8071da177e4SLinus Torvalds [NFSD_Add] = {".add", &transaction_ops, S_IWUSR}, 8081da177e4SLinus Torvalds [NFSD_Del] = {".del", &transaction_ops, S_IWUSR}, 8091da177e4SLinus Torvalds [NFSD_Export] = {".export", &transaction_ops, S_IWUSR}, 8101da177e4SLinus Torvalds [NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR}, 8111da177e4SLinus Torvalds [NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR}, 8121da177e4SLinus Torvalds [NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR}, 8131da177e4SLinus Torvalds [NFSD_List] = {"exports", &exports_operations, S_IRUGO}, 8144373ea84SWendy Cheng [NFSD_FO_UnlockIP] = {"unlock_ip", 8154373ea84SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 81617efa372SWendy Cheng [NFSD_FO_UnlockFS] = {"unlock_filesystem", 81717efa372SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 8181da177e4SLinus Torvalds [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, 8191da177e4SLinus Torvalds [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, 820eed2965aSGreg Banks [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR}, 82170c3b76cSNeilBrown [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, 82280212d59SNeilBrown [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, 823596bbe53SNeilBrown [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO}, 8241da177e4SLinus Torvalds #ifdef CONFIG_NFSD_V4 8251da177e4SLinus Torvalds [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, 8260964a3d3SNeilBrown [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, 8271da177e4SLinus Torvalds #endif 8281da177e4SLinus Torvalds /* last one */ {""} 8291da177e4SLinus Torvalds }; 8301da177e4SLinus Torvalds return simple_fill_super(sb, 0x6e667364, nfsd_files); 8311da177e4SLinus Torvalds } 8321da177e4SLinus Torvalds 833454e2398SDavid Howells static int nfsd_get_sb(struct file_system_type *fs_type, 834454e2398SDavid Howells int flags, const char *dev_name, void *data, struct vfsmount *mnt) 8351da177e4SLinus Torvalds { 836454e2398SDavid Howells return get_sb_single(fs_type, flags, data, nfsd_fill_super, mnt); 8371da177e4SLinus Torvalds } 8381da177e4SLinus Torvalds 8391da177e4SLinus Torvalds static struct file_system_type nfsd_fs_type = { 8401da177e4SLinus Torvalds .owner = THIS_MODULE, 8411da177e4SLinus Torvalds .name = "nfsd", 8421da177e4SLinus Torvalds .get_sb = nfsd_get_sb, 8431da177e4SLinus Torvalds .kill_sb = kill_litter_super, 8441da177e4SLinus Torvalds }; 8451da177e4SLinus Torvalds 846e331f606SJ. Bruce Fields #ifdef CONFIG_PROC_FS 847e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 848e331f606SJ. Bruce Fields { 849e331f606SJ. Bruce Fields struct proc_dir_entry *entry; 850e331f606SJ. Bruce Fields 851e331f606SJ. Bruce Fields entry = proc_mkdir("fs/nfs", NULL); 852e331f606SJ. Bruce Fields if (!entry) 853e331f606SJ. Bruce Fields return -ENOMEM; 8549ef2db26SDenis V. Lunev entry = proc_create("exports", 0, entry, &exports_operations); 855e331f606SJ. Bruce Fields if (!entry) 856e331f606SJ. Bruce Fields return -ENOMEM; 857e331f606SJ. Bruce Fields return 0; 858e331f606SJ. Bruce Fields } 859e331f606SJ. Bruce Fields #else /* CONFIG_PROC_FS */ 860e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 861e331f606SJ. Bruce Fields { 862e331f606SJ. Bruce Fields return 0; 863e331f606SJ. Bruce Fields } 864e331f606SJ. Bruce Fields #endif 865e331f606SJ. Bruce Fields 8661da177e4SLinus Torvalds static int __init init_nfsd(void) 8671da177e4SLinus Torvalds { 8681da177e4SLinus Torvalds int retval; 8691da177e4SLinus Torvalds printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n"); 8701da177e4SLinus Torvalds 871e8ff2a84SJ. Bruce Fields retval = nfs4_state_init(); /* nfs4 locking state */ 872e8ff2a84SJ. Bruce Fields if (retval) 873e8ff2a84SJ. Bruce Fields return retval; 8741da177e4SLinus Torvalds nfsd_stat_init(); /* Statistics */ 875d5c3428bSJ. Bruce Fields retval = nfsd_reply_cache_init(); 876d5c3428bSJ. Bruce Fields if (retval) 877d5c3428bSJ. Bruce Fields goto out_free_stat; 878dbf847ecSJ. Bruce Fields retval = nfsd_export_init(); 879dbf847ecSJ. Bruce Fields if (retval) 880dbf847ecSJ. Bruce Fields goto out_free_cache; 8811da177e4SLinus Torvalds nfsd_lockd_init(); /* lockd->nfsd callbacks */ 882dbf847ecSJ. Bruce Fields retval = nfsd_idmap_init(); 883dbf847ecSJ. Bruce Fields if (retval) 884dbf847ecSJ. Bruce Fields goto out_free_lockd; 885e331f606SJ. Bruce Fields retval = create_proc_exports_entry(); 886e331f606SJ. Bruce Fields if (retval) 887e331f606SJ. Bruce Fields goto out_free_idmap; 8881da177e4SLinus Torvalds retval = register_filesystem(&nfsd_fs_type); 88926808d3fSJ. Bruce Fields if (retval) 89026808d3fSJ. Bruce Fields goto out_free_all; 89126808d3fSJ. Bruce Fields return 0; 89226808d3fSJ. Bruce Fields out_free_all: 8931da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 8941da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 895e331f606SJ. Bruce Fields out_free_idmap: 896dbf847ecSJ. Bruce Fields nfsd_idmap_shutdown(); 897dbf847ecSJ. Bruce Fields out_free_lockd: 8981da177e4SLinus Torvalds nfsd_lockd_shutdown(); 899e331f606SJ. Bruce Fields nfsd_export_shutdown(); 900dbf847ecSJ. Bruce Fields out_free_cache: 901e331f606SJ. Bruce Fields nfsd_reply_cache_shutdown(); 902d5c3428bSJ. Bruce Fields out_free_stat: 903d5c3428bSJ. Bruce Fields nfsd_stat_shutdown(); 90446b25895SJ. Bruce Fields nfsd4_free_slabs(); 9051da177e4SLinus Torvalds return retval; 9061da177e4SLinus Torvalds } 9071da177e4SLinus Torvalds 9081da177e4SLinus Torvalds static void __exit exit_nfsd(void) 9091da177e4SLinus Torvalds { 9101da177e4SLinus Torvalds nfsd_export_shutdown(); 911d5c3428bSJ. Bruce Fields nfsd_reply_cache_shutdown(); 9121da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 9131da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 9141da177e4SLinus Torvalds nfsd_stat_shutdown(); 9151da177e4SLinus Torvalds nfsd_lockd_shutdown(); 9161da177e4SLinus Torvalds nfsd_idmap_shutdown(); 917e8ff2a84SJ. Bruce Fields nfsd4_free_slabs(); 9181da177e4SLinus Torvalds unregister_filesystem(&nfsd_fs_type); 9191da177e4SLinus Torvalds } 9201da177e4SLinus Torvalds 9211da177e4SLinus Torvalds MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); 9221da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 9231da177e4SLinus Torvalds module_init(init_nfsd) 9241da177e4SLinus Torvalds module_exit(exit_nfsd) 925