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> 153f8206d4SAl Viro #include <linux/namei.h> 161da177e4SLinus Torvalds #include <linux/fcntl.h> 171da177e4SLinus Torvalds #include <linux/net.h> 181da177e4SLinus Torvalds #include <linux/in.h> 191da177e4SLinus Torvalds #include <linux/syscalls.h> 201da177e4SLinus Torvalds #include <linux/unistd.h> 211da177e4SLinus Torvalds #include <linux/slab.h> 221da177e4SLinus Torvalds #include <linux/proc_fs.h> 231da177e4SLinus Torvalds #include <linux/seq_file.h> 241da177e4SLinus Torvalds #include <linux/pagemap.h> 251da177e4SLinus Torvalds #include <linux/init.h> 264373ea84SWendy Cheng #include <linux/inet.h> 2770c3b76cSNeilBrown #include <linux/string.h> 2880212d59SNeilBrown #include <linux/smp_lock.h> 29b41b66d6SNeilBrown #include <linux/ctype.h> 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds #include <linux/nfs.h> 321da177e4SLinus Torvalds #include <linux/nfsd_idmap.h> 33b41b66d6SNeilBrown #include <linux/lockd/bind.h> 341da177e4SLinus Torvalds #include <linux/sunrpc/svc.h> 3580212d59SNeilBrown #include <linux/sunrpc/svcsock.h> 361da177e4SLinus Torvalds #include <linux/nfsd/nfsd.h> 371da177e4SLinus Torvalds #include <linux/nfsd/cache.h> 381da177e4SLinus Torvalds #include <linux/nfsd/xdr.h> 391da177e4SLinus Torvalds #include <linux/nfsd/syscall.h> 404373ea84SWendy Cheng #include <linux/lockd/lockd.h> 411da177e4SLinus Torvalds 421da177e4SLinus Torvalds #include <asm/uaccess.h> 43f15364bdSAurélien Charbon #include <net/ipv6.h> 441da177e4SLinus Torvalds 451da177e4SLinus Torvalds /* 461da177e4SLinus Torvalds * We have a single directory with 9 nodes in it. 471da177e4SLinus Torvalds */ 481da177e4SLinus Torvalds enum { 491da177e4SLinus Torvalds NFSD_Root = 1, 501da177e4SLinus Torvalds NFSD_Svc, 511da177e4SLinus Torvalds NFSD_Add, 521da177e4SLinus Torvalds NFSD_Del, 531da177e4SLinus Torvalds NFSD_Export, 541da177e4SLinus Torvalds NFSD_Unexport, 551da177e4SLinus Torvalds NFSD_Getfd, 561da177e4SLinus Torvalds NFSD_Getfs, 571da177e4SLinus Torvalds NFSD_List, 581da177e4SLinus Torvalds NFSD_Fh, 594373ea84SWendy Cheng NFSD_FO_UnlockIP, 6017efa372SWendy Cheng NFSD_FO_UnlockFS, 611da177e4SLinus Torvalds NFSD_Threads, 62eed2965aSGreg Banks NFSD_Pool_Threads, 6370c3b76cSNeilBrown NFSD_Versions, 6480212d59SNeilBrown NFSD_Ports, 65596bbe53SNeilBrown NFSD_MaxBlkSize, 6670c3b76cSNeilBrown /* 6770c3b76cSNeilBrown * The below MUST come last. Otherwise we leave a hole in nfsd_files[] 6870c3b76cSNeilBrown * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops 6970c3b76cSNeilBrown */ 7070c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 711da177e4SLinus Torvalds NFSD_Leasetime, 720964a3d3SNeilBrown NFSD_RecoveryDir, 7370c3b76cSNeilBrown #endif 741da177e4SLinus Torvalds }; 751da177e4SLinus Torvalds 761da177e4SLinus Torvalds /* 771da177e4SLinus Torvalds * write() for these nodes. 781da177e4SLinus Torvalds */ 791da177e4SLinus Torvalds static ssize_t write_svc(struct file *file, char *buf, size_t size); 801da177e4SLinus Torvalds static ssize_t write_add(struct file *file, char *buf, size_t size); 811da177e4SLinus Torvalds static ssize_t write_del(struct file *file, char *buf, size_t size); 821da177e4SLinus Torvalds static ssize_t write_export(struct file *file, char *buf, size_t size); 831da177e4SLinus Torvalds static ssize_t write_unexport(struct file *file, char *buf, size_t size); 841da177e4SLinus Torvalds static ssize_t write_getfd(struct file *file, char *buf, size_t size); 851da177e4SLinus Torvalds static ssize_t write_getfs(struct file *file, char *buf, size_t size); 861da177e4SLinus Torvalds static ssize_t write_filehandle(struct file *file, char *buf, size_t size); 871da177e4SLinus Torvalds static ssize_t write_threads(struct file *file, char *buf, size_t size); 88eed2965aSGreg Banks static ssize_t write_pool_threads(struct file *file, char *buf, size_t size); 8970c3b76cSNeilBrown static ssize_t write_versions(struct file *file, char *buf, size_t size); 9080212d59SNeilBrown static ssize_t write_ports(struct file *file, char *buf, size_t size); 91596bbe53SNeilBrown static ssize_t write_maxblksize(struct file *file, char *buf, size_t size); 9270c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 931da177e4SLinus Torvalds static ssize_t write_leasetime(struct file *file, char *buf, size_t size); 940964a3d3SNeilBrown static ssize_t write_recoverydir(struct file *file, char *buf, size_t size); 9570c3b76cSNeilBrown #endif 961da177e4SLinus Torvalds 974373ea84SWendy Cheng static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size); 9817efa372SWendy Cheng static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size); 994373ea84SWendy Cheng 1001da177e4SLinus Torvalds static ssize_t (*write_op[])(struct file *, char *, size_t) = { 1011da177e4SLinus Torvalds [NFSD_Svc] = write_svc, 1021da177e4SLinus Torvalds [NFSD_Add] = write_add, 1031da177e4SLinus Torvalds [NFSD_Del] = write_del, 1041da177e4SLinus Torvalds [NFSD_Export] = write_export, 1051da177e4SLinus Torvalds [NFSD_Unexport] = write_unexport, 1061da177e4SLinus Torvalds [NFSD_Getfd] = write_getfd, 1071da177e4SLinus Torvalds [NFSD_Getfs] = write_getfs, 1081da177e4SLinus Torvalds [NFSD_Fh] = write_filehandle, 1094373ea84SWendy Cheng [NFSD_FO_UnlockIP] = failover_unlock_ip, 11017efa372SWendy Cheng [NFSD_FO_UnlockFS] = failover_unlock_fs, 1111da177e4SLinus Torvalds [NFSD_Threads] = write_threads, 112eed2965aSGreg Banks [NFSD_Pool_Threads] = write_pool_threads, 11370c3b76cSNeilBrown [NFSD_Versions] = write_versions, 11480212d59SNeilBrown [NFSD_Ports] = write_ports, 115596bbe53SNeilBrown [NFSD_MaxBlkSize] = write_maxblksize, 11670c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 1171da177e4SLinus Torvalds [NFSD_Leasetime] = write_leasetime, 1180964a3d3SNeilBrown [NFSD_RecoveryDir] = write_recoverydir, 11970c3b76cSNeilBrown #endif 1201da177e4SLinus Torvalds }; 1211da177e4SLinus Torvalds 1221da177e4SLinus Torvalds static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos) 1231da177e4SLinus Torvalds { 1247eaa36e2SJosef "Jeff" Sipek ino_t ino = file->f_path.dentry->d_inode->i_ino; 1251da177e4SLinus Torvalds char *data; 1261da177e4SLinus Torvalds ssize_t rv; 1271da177e4SLinus Torvalds 128e8c96f8cSTobias Klauser if (ino >= ARRAY_SIZE(write_op) || !write_op[ino]) 1291da177e4SLinus Torvalds return -EINVAL; 1301da177e4SLinus Torvalds 1311da177e4SLinus Torvalds data = simple_transaction_get(file, buf, size); 1321da177e4SLinus Torvalds if (IS_ERR(data)) 1331da177e4SLinus Torvalds return PTR_ERR(data); 1341da177e4SLinus Torvalds 1351da177e4SLinus Torvalds rv = write_op[ino](file, data, size); 1368971a101SNeilBrown if (rv >= 0) { 1371da177e4SLinus Torvalds simple_transaction_set(file, rv); 1381da177e4SLinus Torvalds rv = size; 1391da177e4SLinus Torvalds } 1401da177e4SLinus Torvalds return rv; 1411da177e4SLinus Torvalds } 1421da177e4SLinus Torvalds 1437390022dSNeilBrown static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos) 1447390022dSNeilBrown { 1457390022dSNeilBrown if (! file->private_data) { 1467390022dSNeilBrown /* An attempt to read a transaction file without writing 1477390022dSNeilBrown * causes a 0-byte write so that the file can return 1487390022dSNeilBrown * state information 1497390022dSNeilBrown */ 1507390022dSNeilBrown ssize_t rv = nfsctl_transaction_write(file, buf, 0, pos); 1517390022dSNeilBrown if (rv < 0) 1527390022dSNeilBrown return rv; 1537390022dSNeilBrown } 1547390022dSNeilBrown return simple_transaction_read(file, buf, size, pos); 1557390022dSNeilBrown } 1567390022dSNeilBrown 1574b6f5d20SArjan van de Ven static const struct file_operations transaction_ops = { 1581da177e4SLinus Torvalds .write = nfsctl_transaction_write, 1597390022dSNeilBrown .read = nfsctl_transaction_read, 1601da177e4SLinus Torvalds .release = simple_transaction_release, 1611da177e4SLinus Torvalds }; 1621da177e4SLinus Torvalds 1631da177e4SLinus Torvalds static int exports_open(struct inode *inode, struct file *file) 1641da177e4SLinus Torvalds { 1651da177e4SLinus Torvalds return seq_open(file, &nfs_exports_op); 1661da177e4SLinus Torvalds } 1671da177e4SLinus Torvalds 1684b6f5d20SArjan van de Ven static const struct file_operations exports_operations = { 1691da177e4SLinus Torvalds .open = exports_open, 1701da177e4SLinus Torvalds .read = seq_read, 1711da177e4SLinus Torvalds .llseek = seq_lseek, 1721da177e4SLinus Torvalds .release = seq_release, 1739ef2db26SDenis V. Lunev .owner = THIS_MODULE, 1741da177e4SLinus Torvalds }; 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 1771da177e4SLinus Torvalds /* 1781da177e4SLinus Torvalds * payload - write methods 1791da177e4SLinus Torvalds * If the method has a response, the response should be put in buf, 1801da177e4SLinus Torvalds * and the length returned. Otherwise return 0 or and -error. 1811da177e4SLinus Torvalds */ 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds static ssize_t write_svc(struct file *file, char *buf, size_t size) 1841da177e4SLinus Torvalds { 1851da177e4SLinus Torvalds struct nfsctl_svc *data; 1861da177e4SLinus Torvalds if (size < sizeof(*data)) 1871da177e4SLinus Torvalds return -EINVAL; 1881da177e4SLinus Torvalds data = (struct nfsctl_svc*) buf; 1891da177e4SLinus Torvalds return nfsd_svc(data->svc_port, data->svc_nthreads); 1901da177e4SLinus Torvalds } 1911da177e4SLinus Torvalds 1921da177e4SLinus Torvalds static ssize_t write_add(struct file *file, char *buf, size_t size) 1931da177e4SLinus Torvalds { 1941da177e4SLinus Torvalds struct nfsctl_client *data; 1951da177e4SLinus Torvalds if (size < sizeof(*data)) 1961da177e4SLinus Torvalds return -EINVAL; 1971da177e4SLinus Torvalds data = (struct nfsctl_client *)buf; 1981da177e4SLinus Torvalds return exp_addclient(data); 1991da177e4SLinus Torvalds } 2001da177e4SLinus Torvalds 2011da177e4SLinus Torvalds static ssize_t write_del(struct file *file, char *buf, size_t size) 2021da177e4SLinus Torvalds { 2031da177e4SLinus Torvalds struct nfsctl_client *data; 2041da177e4SLinus Torvalds if (size < sizeof(*data)) 2051da177e4SLinus Torvalds return -EINVAL; 2061da177e4SLinus Torvalds data = (struct nfsctl_client *)buf; 2071da177e4SLinus Torvalds return exp_delclient(data); 2081da177e4SLinus Torvalds } 2091da177e4SLinus Torvalds 2101da177e4SLinus Torvalds static ssize_t write_export(struct file *file, char *buf, size_t size) 2111da177e4SLinus Torvalds { 2121da177e4SLinus Torvalds struct nfsctl_export *data; 2131da177e4SLinus Torvalds if (size < sizeof(*data)) 2141da177e4SLinus Torvalds return -EINVAL; 2151da177e4SLinus Torvalds data = (struct nfsctl_export*)buf; 2161da177e4SLinus Torvalds return exp_export(data); 2171da177e4SLinus Torvalds } 2181da177e4SLinus Torvalds 2191da177e4SLinus Torvalds static ssize_t write_unexport(struct file *file, char *buf, size_t size) 2201da177e4SLinus Torvalds { 2211da177e4SLinus Torvalds struct nfsctl_export *data; 2221da177e4SLinus Torvalds 2231da177e4SLinus Torvalds if (size < sizeof(*data)) 2241da177e4SLinus Torvalds return -EINVAL; 2251da177e4SLinus Torvalds data = (struct nfsctl_export*)buf; 2261da177e4SLinus Torvalds return exp_unexport(data); 2271da177e4SLinus Torvalds } 2281da177e4SLinus Torvalds 2291da177e4SLinus Torvalds static ssize_t write_getfs(struct file *file, char *buf, size_t size) 2301da177e4SLinus Torvalds { 2311da177e4SLinus Torvalds struct nfsctl_fsparm *data; 2321da177e4SLinus Torvalds struct sockaddr_in *sin; 2331da177e4SLinus Torvalds struct auth_domain *clp; 2341da177e4SLinus Torvalds int err = 0; 2351da177e4SLinus Torvalds struct knfsd_fh *res; 236f15364bdSAurélien Charbon struct in6_addr in6; 2371da177e4SLinus Torvalds 2381da177e4SLinus Torvalds if (size < sizeof(*data)) 2391da177e4SLinus Torvalds return -EINVAL; 2401da177e4SLinus Torvalds data = (struct nfsctl_fsparm*)buf; 2411da177e4SLinus Torvalds err = -EPROTONOSUPPORT; 2421da177e4SLinus Torvalds if (data->gd_addr.sa_family != AF_INET) 2431da177e4SLinus Torvalds goto out; 2441da177e4SLinus Torvalds sin = (struct sockaddr_in *)&data->gd_addr; 2451da177e4SLinus Torvalds if (data->gd_maxlen > NFS3_FHSIZE) 2461da177e4SLinus Torvalds data->gd_maxlen = NFS3_FHSIZE; 2471da177e4SLinus Torvalds 2481da177e4SLinus Torvalds res = (struct knfsd_fh*)buf; 2491da177e4SLinus Torvalds 2501da177e4SLinus Torvalds exp_readlock(); 251f15364bdSAurélien Charbon 252f15364bdSAurélien Charbon ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6); 253f15364bdSAurélien Charbon 254f15364bdSAurélien Charbon clp = auth_unix_lookup(&in6); 255f15364bdSAurélien Charbon if (!clp) 2561da177e4SLinus Torvalds err = -EPERM; 2571da177e4SLinus Torvalds else { 2581da177e4SLinus Torvalds err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen); 2591da177e4SLinus Torvalds auth_domain_put(clp); 2601da177e4SLinus Torvalds } 2611da177e4SLinus Torvalds exp_readunlock(); 2621da177e4SLinus Torvalds if (err == 0) 26312127498SAndrew Morton err = res->fh_size + offsetof(struct knfsd_fh, fh_base); 2641da177e4SLinus Torvalds out: 2651da177e4SLinus Torvalds return err; 2661da177e4SLinus Torvalds } 2671da177e4SLinus Torvalds 2681da177e4SLinus Torvalds static ssize_t write_getfd(struct file *file, char *buf, size_t size) 2691da177e4SLinus Torvalds { 2701da177e4SLinus Torvalds struct nfsctl_fdparm *data; 2711da177e4SLinus Torvalds struct sockaddr_in *sin; 2721da177e4SLinus Torvalds struct auth_domain *clp; 2731da177e4SLinus Torvalds int err = 0; 2741da177e4SLinus Torvalds struct knfsd_fh fh; 2751da177e4SLinus Torvalds char *res; 276f15364bdSAurélien Charbon struct in6_addr in6; 2771da177e4SLinus Torvalds 2781da177e4SLinus Torvalds if (size < sizeof(*data)) 2791da177e4SLinus Torvalds return -EINVAL; 2801da177e4SLinus Torvalds data = (struct nfsctl_fdparm*)buf; 2811da177e4SLinus Torvalds err = -EPROTONOSUPPORT; 2821da177e4SLinus Torvalds if (data->gd_addr.sa_family != AF_INET) 2831da177e4SLinus Torvalds goto out; 2841da177e4SLinus Torvalds err = -EINVAL; 2851da177e4SLinus Torvalds if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS) 2861da177e4SLinus Torvalds goto out; 2871da177e4SLinus Torvalds 2881da177e4SLinus Torvalds res = buf; 2891da177e4SLinus Torvalds sin = (struct sockaddr_in *)&data->gd_addr; 2901da177e4SLinus Torvalds exp_readlock(); 291f15364bdSAurélien Charbon 292f15364bdSAurélien Charbon ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6); 293f15364bdSAurélien Charbon 294f15364bdSAurélien Charbon clp = auth_unix_lookup(&in6); 295f15364bdSAurélien Charbon if (!clp) 2961da177e4SLinus Torvalds err = -EPERM; 2971da177e4SLinus Torvalds else { 2981da177e4SLinus Torvalds err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE); 2991da177e4SLinus Torvalds auth_domain_put(clp); 3001da177e4SLinus Torvalds } 3011da177e4SLinus Torvalds exp_readunlock(); 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvalds if (err == 0) { 3041da177e4SLinus Torvalds memset(res,0, NFS_FHSIZE); 3051da177e4SLinus Torvalds memcpy(res, &fh.fh_base, fh.fh_size); 3061da177e4SLinus Torvalds err = NFS_FHSIZE; 3071da177e4SLinus Torvalds } 3081da177e4SLinus Torvalds out: 3091da177e4SLinus Torvalds return err; 3101da177e4SLinus Torvalds } 3111da177e4SLinus Torvalds 3124373ea84SWendy Cheng static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size) 3134373ea84SWendy Cheng { 314367c8c7bSChuck Lever struct sockaddr_in sin = { 315367c8c7bSChuck Lever .sin_family = AF_INET, 316367c8c7bSChuck Lever }; 3174373ea84SWendy Cheng int b1, b2, b3, b4; 318367c8c7bSChuck Lever char c; 319367c8c7bSChuck Lever char *fo_path; 3204373ea84SWendy Cheng 3214373ea84SWendy Cheng /* sanity check */ 3224373ea84SWendy Cheng if (size == 0) 3234373ea84SWendy Cheng return -EINVAL; 3244373ea84SWendy Cheng 3254373ea84SWendy Cheng if (buf[size-1] != '\n') 3264373ea84SWendy Cheng return -EINVAL; 3274373ea84SWendy Cheng 3284373ea84SWendy Cheng fo_path = buf; 3294373ea84SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 3304373ea84SWendy Cheng return -EINVAL; 3314373ea84SWendy Cheng 3324373ea84SWendy Cheng /* get ipv4 address */ 333367c8c7bSChuck Lever if (sscanf(fo_path, NIPQUAD_FMT "%c", &b1, &b2, &b3, &b4, &c) != 4) 3344373ea84SWendy Cheng return -EINVAL; 335367c8c7bSChuck Lever if (b1 > 255 || b2 > 255 || b3 > 255 || b4 > 255) 336367c8c7bSChuck Lever return -EINVAL; 337367c8c7bSChuck Lever sin.sin_addr.s_addr = htonl((b1 << 24) | (b2 << 16) | (b3 << 8) | b4); 3384373ea84SWendy Cheng 339367c8c7bSChuck Lever return nlmsvc_unlock_all_by_ip((struct sockaddr *)&sin); 3404373ea84SWendy Cheng } 3414373ea84SWendy Cheng 34217efa372SWendy Cheng static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size) 34317efa372SWendy Cheng { 34417efa372SWendy Cheng struct nameidata nd; 34517efa372SWendy Cheng char *fo_path; 34617efa372SWendy Cheng int error; 34717efa372SWendy Cheng 34817efa372SWendy Cheng /* sanity check */ 34917efa372SWendy Cheng if (size == 0) 35017efa372SWendy Cheng return -EINVAL; 35117efa372SWendy Cheng 35217efa372SWendy Cheng if (buf[size-1] != '\n') 35317efa372SWendy Cheng return -EINVAL; 35417efa372SWendy Cheng 35517efa372SWendy Cheng fo_path = buf; 35617efa372SWendy Cheng if (qword_get(&buf, fo_path, size) < 0) 35717efa372SWendy Cheng return -EINVAL; 35817efa372SWendy Cheng 35917efa372SWendy Cheng error = path_lookup(fo_path, 0, &nd); 36017efa372SWendy Cheng if (error) 36117efa372SWendy Cheng return error; 36217efa372SWendy Cheng 36317efa372SWendy Cheng error = nlmsvc_unlock_all_by_sb(nd.path.mnt->mnt_sb); 36417efa372SWendy Cheng 36517efa372SWendy Cheng path_put(&nd.path); 36617efa372SWendy Cheng return error; 36717efa372SWendy Cheng } 36817efa372SWendy Cheng 3691da177e4SLinus Torvalds static ssize_t write_filehandle(struct file *file, char *buf, size_t size) 3701da177e4SLinus Torvalds { 3711da177e4SLinus Torvalds /* request is: 3721da177e4SLinus Torvalds * domain path maxsize 3731da177e4SLinus Torvalds * response is 3741da177e4SLinus Torvalds * filehandle 3751da177e4SLinus Torvalds * 3761da177e4SLinus Torvalds * qword quoting is used, so filehandle will be \x.... 3771da177e4SLinus Torvalds */ 3781da177e4SLinus Torvalds char *dname, *path; 379246d95baSAndrew Morton int uninitialized_var(maxsize); 3801da177e4SLinus Torvalds char *mesg = buf; 3811da177e4SLinus Torvalds int len; 3821da177e4SLinus Torvalds struct auth_domain *dom; 3831da177e4SLinus Torvalds struct knfsd_fh fh; 3841da177e4SLinus Torvalds 38587d26ea7SJ. Bruce Fields if (size == 0) 38687d26ea7SJ. Bruce Fields return -EINVAL; 38787d26ea7SJ. Bruce Fields 3881da177e4SLinus Torvalds if (buf[size-1] != '\n') 3891da177e4SLinus Torvalds return -EINVAL; 3901da177e4SLinus Torvalds buf[size-1] = 0; 3911da177e4SLinus Torvalds 3921da177e4SLinus Torvalds dname = mesg; 3931da177e4SLinus Torvalds len = qword_get(&mesg, dname, size); 3941da177e4SLinus Torvalds if (len <= 0) return -EINVAL; 3951da177e4SLinus Torvalds 3961da177e4SLinus Torvalds path = dname+len+1; 3971da177e4SLinus Torvalds len = qword_get(&mesg, path, size); 3981da177e4SLinus Torvalds if (len <= 0) return -EINVAL; 3991da177e4SLinus Torvalds 4001da177e4SLinus Torvalds len = get_int(&mesg, &maxsize); 4011da177e4SLinus Torvalds if (len) 4021da177e4SLinus Torvalds return len; 4031da177e4SLinus Torvalds 4041da177e4SLinus Torvalds if (maxsize < NFS_FHSIZE) 4051da177e4SLinus Torvalds return -EINVAL; 4061da177e4SLinus Torvalds if (maxsize > NFS3_FHSIZE) 4071da177e4SLinus Torvalds maxsize = NFS3_FHSIZE; 4081da177e4SLinus Torvalds 4091da177e4SLinus Torvalds if (qword_get(&mesg, mesg, size)>0) 4101da177e4SLinus Torvalds return -EINVAL; 4111da177e4SLinus Torvalds 4121da177e4SLinus Torvalds /* we have all the words, they are in buf.. */ 4131da177e4SLinus Torvalds dom = unix_domain_find(dname); 4141da177e4SLinus Torvalds if (!dom) 4151da177e4SLinus Torvalds return -ENOMEM; 4161da177e4SLinus Torvalds 4171da177e4SLinus Torvalds len = exp_rootfh(dom, path, &fh, maxsize); 4181da177e4SLinus Torvalds auth_domain_put(dom); 4191da177e4SLinus Torvalds if (len) 4201da177e4SLinus Torvalds return len; 4211da177e4SLinus Torvalds 4221da177e4SLinus Torvalds mesg = buf; len = SIMPLE_TRANSACTION_LIMIT; 4231da177e4SLinus Torvalds qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size); 4241da177e4SLinus Torvalds mesg[-1] = '\n'; 4251da177e4SLinus Torvalds return mesg - buf; 4261da177e4SLinus Torvalds } 4271da177e4SLinus Torvalds 4281da177e4SLinus Torvalds static ssize_t write_threads(struct file *file, char *buf, size_t size) 4291da177e4SLinus Torvalds { 4301da177e4SLinus Torvalds /* if size > 0, look for a number of threads and call nfsd_svc 4311da177e4SLinus Torvalds * then write out number of threads as reply 4321da177e4SLinus Torvalds */ 4331da177e4SLinus Torvalds char *mesg = buf; 4341da177e4SLinus Torvalds int rv; 4351da177e4SLinus Torvalds if (size > 0) { 4361da177e4SLinus Torvalds int newthreads; 4371da177e4SLinus Torvalds rv = get_int(&mesg, &newthreads); 4381da177e4SLinus Torvalds if (rv) 4391da177e4SLinus Torvalds return rv; 4401da177e4SLinus Torvalds if (newthreads <0) 4411da177e4SLinus Torvalds return -EINVAL; 4421da177e4SLinus Torvalds rv = nfsd_svc(2049, newthreads); 4431da177e4SLinus Torvalds if (rv) 4441da177e4SLinus Torvalds return rv; 4451da177e4SLinus Torvalds } 4461da177e4SLinus Torvalds sprintf(buf, "%d\n", nfsd_nrthreads()); 4471da177e4SLinus Torvalds return strlen(buf); 4481da177e4SLinus Torvalds } 4491da177e4SLinus Torvalds 450eed2965aSGreg Banks static ssize_t write_pool_threads(struct file *file, char *buf, size_t size) 451eed2965aSGreg Banks { 452eed2965aSGreg Banks /* if size > 0, look for an array of number of threads per node 453eed2965aSGreg Banks * and apply them then write out number of threads per node as reply 454eed2965aSGreg Banks */ 455eed2965aSGreg Banks char *mesg = buf; 456eed2965aSGreg Banks int i; 457eed2965aSGreg Banks int rv; 458eed2965aSGreg Banks int len; 459bedbdd8bSNeil Brown int npools; 460eed2965aSGreg Banks int *nthreads; 461eed2965aSGreg Banks 462bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 463bedbdd8bSNeil Brown npools = nfsd_nrpools(); 464eed2965aSGreg Banks if (npools == 0) { 465eed2965aSGreg Banks /* 466eed2965aSGreg Banks * NFS is shut down. The admin can start it by 467eed2965aSGreg Banks * writing to the threads file but NOT the pool_threads 468eed2965aSGreg Banks * file, sorry. Report zero threads. 469eed2965aSGreg Banks */ 470bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 471eed2965aSGreg Banks strcpy(buf, "0\n"); 472eed2965aSGreg Banks return strlen(buf); 473eed2965aSGreg Banks } 474eed2965aSGreg Banks 475eed2965aSGreg Banks nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL); 476bedbdd8bSNeil Brown rv = -ENOMEM; 477eed2965aSGreg Banks if (nthreads == NULL) 478bedbdd8bSNeil Brown goto out_free; 479eed2965aSGreg Banks 480eed2965aSGreg Banks if (size > 0) { 481eed2965aSGreg Banks for (i = 0; i < npools; i++) { 482eed2965aSGreg Banks rv = get_int(&mesg, &nthreads[i]); 483eed2965aSGreg Banks if (rv == -ENOENT) 484eed2965aSGreg Banks break; /* fewer numbers than pools */ 485eed2965aSGreg Banks if (rv) 486eed2965aSGreg Banks goto out_free; /* syntax error */ 487eed2965aSGreg Banks rv = -EINVAL; 488eed2965aSGreg Banks if (nthreads[i] < 0) 489eed2965aSGreg Banks goto out_free; 490eed2965aSGreg Banks } 491eed2965aSGreg Banks rv = nfsd_set_nrthreads(i, nthreads); 492eed2965aSGreg Banks if (rv) 493eed2965aSGreg Banks goto out_free; 494eed2965aSGreg Banks } 495eed2965aSGreg Banks 496eed2965aSGreg Banks rv = nfsd_get_nrthreads(npools, nthreads); 497eed2965aSGreg Banks if (rv) 498eed2965aSGreg Banks goto out_free; 499eed2965aSGreg Banks 500eed2965aSGreg Banks mesg = buf; 501eed2965aSGreg Banks size = SIMPLE_TRANSACTION_LIMIT; 502eed2965aSGreg Banks for (i = 0; i < npools && size > 0; i++) { 503eed2965aSGreg Banks snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' ')); 504eed2965aSGreg Banks len = strlen(mesg); 505eed2965aSGreg Banks size -= len; 506eed2965aSGreg Banks mesg += len; 507eed2965aSGreg Banks } 508eed2965aSGreg Banks 509bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 510eed2965aSGreg Banks return (mesg-buf); 511eed2965aSGreg Banks 512eed2965aSGreg Banks out_free: 513eed2965aSGreg Banks kfree(nthreads); 514bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 515eed2965aSGreg Banks return rv; 516eed2965aSGreg Banks } 517eed2965aSGreg Banks 5183dd98a3bSJeff Layton static ssize_t __write_versions(struct file *file, char *buf, size_t size) 51970c3b76cSNeilBrown { 52070c3b76cSNeilBrown /* 52170c3b76cSNeilBrown * Format: 52270c3b76cSNeilBrown * [-/+]vers [-/+]vers ... 52370c3b76cSNeilBrown */ 52470c3b76cSNeilBrown char *mesg = buf; 52570c3b76cSNeilBrown char *vers, sign; 52670c3b76cSNeilBrown int len, num; 52770c3b76cSNeilBrown ssize_t tlen = 0; 52870c3b76cSNeilBrown char *sep; 52970c3b76cSNeilBrown 53070c3b76cSNeilBrown if (size>0) { 53170c3b76cSNeilBrown if (nfsd_serv) 5326658d3a7SNeilBrown /* Cannot change versions without updating 5336658d3a7SNeilBrown * nfsd_serv->sv_xdrsize, and reallocing 5346658d3a7SNeilBrown * rq_argp and rq_resp 5356658d3a7SNeilBrown */ 53670c3b76cSNeilBrown return -EBUSY; 53770c3b76cSNeilBrown if (buf[size-1] != '\n') 53870c3b76cSNeilBrown return -EINVAL; 53970c3b76cSNeilBrown buf[size-1] = 0; 54070c3b76cSNeilBrown 54170c3b76cSNeilBrown vers = mesg; 54270c3b76cSNeilBrown len = qword_get(&mesg, vers, size); 54370c3b76cSNeilBrown if (len <= 0) return -EINVAL; 54470c3b76cSNeilBrown do { 54570c3b76cSNeilBrown sign = *vers; 54670c3b76cSNeilBrown if (sign == '+' || sign == '-') 54770c3b76cSNeilBrown num = simple_strtol((vers+1), NULL, 0); 54870c3b76cSNeilBrown else 54970c3b76cSNeilBrown num = simple_strtol(vers, NULL, 0); 55070c3b76cSNeilBrown switch(num) { 55170c3b76cSNeilBrown case 2: 55270c3b76cSNeilBrown case 3: 55370c3b76cSNeilBrown case 4: 5546658d3a7SNeilBrown nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET); 55570c3b76cSNeilBrown break; 55670c3b76cSNeilBrown default: 55770c3b76cSNeilBrown return -EINVAL; 55870c3b76cSNeilBrown } 55970c3b76cSNeilBrown vers += len + 1; 56070c3b76cSNeilBrown tlen += len; 56170c3b76cSNeilBrown } while ((len = qword_get(&mesg, vers, size)) > 0); 56270c3b76cSNeilBrown /* If all get turned off, turn them back on, as 56370c3b76cSNeilBrown * having no versions is BAD 56470c3b76cSNeilBrown */ 5656658d3a7SNeilBrown nfsd_reset_versions(); 56670c3b76cSNeilBrown } 56770c3b76cSNeilBrown /* Now write current state into reply buffer */ 56870c3b76cSNeilBrown len = 0; 56970c3b76cSNeilBrown sep = ""; 57070c3b76cSNeilBrown for (num=2 ; num <= 4 ; num++) 5716658d3a7SNeilBrown if (nfsd_vers(num, NFSD_AVAIL)) { 57270c3b76cSNeilBrown len += sprintf(buf+len, "%s%c%d", sep, 5736658d3a7SNeilBrown nfsd_vers(num, NFSD_TEST)?'+':'-', 57470c3b76cSNeilBrown num); 57570c3b76cSNeilBrown sep = " "; 57670c3b76cSNeilBrown } 57770c3b76cSNeilBrown len += sprintf(buf+len, "\n"); 57870c3b76cSNeilBrown return len; 57970c3b76cSNeilBrown } 58070c3b76cSNeilBrown 5813dd98a3bSJeff Layton static ssize_t write_versions(struct file *file, char *buf, size_t size) 5823dd98a3bSJeff Layton { 5833dd98a3bSJeff Layton ssize_t rv; 5843dd98a3bSJeff Layton 5853dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 5863dd98a3bSJeff Layton rv = __write_versions(file, buf, size); 5873dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 5883dd98a3bSJeff Layton return rv; 5893dd98a3bSJeff Layton } 5903dd98a3bSJeff Layton 591bedbdd8bSNeil Brown static ssize_t __write_ports(struct file *file, char *buf, size_t size) 59280212d59SNeilBrown { 593b41b66d6SNeilBrown if (size == 0) { 59480212d59SNeilBrown int len = 0; 595bedbdd8bSNeil Brown 59680212d59SNeilBrown if (nfsd_serv) 5979571af18STom Tucker len = svc_xprt_names(nfsd_serv, buf, 0); 59880212d59SNeilBrown return len; 59980212d59SNeilBrown } 600b41b66d6SNeilBrown /* Either a single 'fd' number is written, in which 601b41b66d6SNeilBrown * case it must be for a socket of a supported family/protocol, 602b41b66d6SNeilBrown * and we use it as an nfsd socket, or 603b41b66d6SNeilBrown * A '-' followed by the 'name' of a socket in which case 604b41b66d6SNeilBrown * we close the socket. 605b41b66d6SNeilBrown */ 606b41b66d6SNeilBrown if (isdigit(buf[0])) { 607b41b66d6SNeilBrown char *mesg = buf; 608b41b66d6SNeilBrown int fd; 609b41b66d6SNeilBrown int err; 610b41b66d6SNeilBrown err = get_int(&mesg, &fd); 611b41b66d6SNeilBrown if (err) 612b41b66d6SNeilBrown return -EINVAL; 613b41b66d6SNeilBrown if (fd < 0) 614b41b66d6SNeilBrown return -EINVAL; 615b41b66d6SNeilBrown err = nfsd_create_serv(); 616b41b66d6SNeilBrown if (!err) { 617b41b66d6SNeilBrown int proto = 0; 618b41b66d6SNeilBrown err = svc_addsock(nfsd_serv, fd, buf, &proto); 6195680c446SNeilBrown if (err >= 0) { 6205680c446SNeilBrown err = lockd_up(proto); 6215680c446SNeilBrown if (err < 0) 6225680c446SNeilBrown svc_sock_names(buf+strlen(buf)+1, nfsd_serv, buf); 6233dfb4210SNeilBrown } 624b41b66d6SNeilBrown /* Decrease the count, but don't shutdown the 625b41b66d6SNeilBrown * the service 626b41b66d6SNeilBrown */ 627b41b66d6SNeilBrown nfsd_serv->sv_nrthreads--; 628b41b66d6SNeilBrown } 6295680c446SNeilBrown return err < 0 ? err : 0; 630b41b66d6SNeilBrown } 631a217813fSTom Tucker if (buf[0] == '-' && isdigit(buf[1])) { 632b41b66d6SNeilBrown char *toclose = kstrdup(buf+1, GFP_KERNEL); 633b41b66d6SNeilBrown int len = 0; 634b41b66d6SNeilBrown if (!toclose) 635b41b66d6SNeilBrown return -ENOMEM; 636b41b66d6SNeilBrown if (nfsd_serv) 637b41b66d6SNeilBrown len = svc_sock_names(buf, nfsd_serv, toclose); 63837a03472SNeilBrown if (len >= 0) 63937a03472SNeilBrown lockd_down(); 640b41b66d6SNeilBrown kfree(toclose); 641b41b66d6SNeilBrown return len; 642b41b66d6SNeilBrown } 643a217813fSTom Tucker /* 644a217813fSTom Tucker * Add a transport listener by writing it's transport name 645a217813fSTom Tucker */ 646a217813fSTom Tucker if (isalpha(buf[0])) { 647a217813fSTom Tucker int err; 648a217813fSTom Tucker char transport[16]; 649a217813fSTom Tucker int port; 650a217813fSTom Tucker if (sscanf(buf, "%15s %4d", transport, &port) == 2) { 651a217813fSTom Tucker err = nfsd_create_serv(); 652a217813fSTom Tucker if (!err) { 653a217813fSTom Tucker err = svc_create_xprt(nfsd_serv, 654a217813fSTom Tucker transport, port, 655a217813fSTom Tucker SVC_SOCK_ANONYMOUS); 656a217813fSTom Tucker if (err == -ENOENT) 657a217813fSTom Tucker /* Give a reasonable perror msg for 658a217813fSTom Tucker * bad transport string */ 659a217813fSTom Tucker err = -EPROTONOSUPPORT; 660a217813fSTom Tucker } 661a217813fSTom Tucker return err < 0 ? err : 0; 662a217813fSTom Tucker } 663a217813fSTom Tucker } 664a217813fSTom Tucker /* 665a217813fSTom Tucker * Remove a transport by writing it's transport name and port number 666a217813fSTom Tucker */ 667a217813fSTom Tucker if (buf[0] == '-' && isalpha(buf[1])) { 668a217813fSTom Tucker struct svc_xprt *xprt; 669a217813fSTom Tucker int err = -EINVAL; 670a217813fSTom Tucker char transport[16]; 671a217813fSTom Tucker int port; 672a217813fSTom Tucker if (sscanf(&buf[1], "%15s %4d", transport, &port) == 2) { 673a217813fSTom Tucker if (port == 0) 674a217813fSTom Tucker return -EINVAL; 675a217813fSTom Tucker if (nfsd_serv) { 676a217813fSTom Tucker xprt = svc_find_xprt(nfsd_serv, transport, 677a217813fSTom Tucker AF_UNSPEC, port); 678a217813fSTom Tucker if (xprt) { 679a217813fSTom Tucker svc_close_xprt(xprt); 680a217813fSTom Tucker svc_xprt_put(xprt); 681a217813fSTom Tucker err = 0; 682a217813fSTom Tucker } else 683a217813fSTom Tucker err = -ENOTCONN; 684a217813fSTom Tucker } 685a217813fSTom Tucker return err < 0 ? err : 0; 686a217813fSTom Tucker } 687a217813fSTom Tucker } 688b41b66d6SNeilBrown return -EINVAL; 689b41b66d6SNeilBrown } 69080212d59SNeilBrown 691bedbdd8bSNeil Brown static ssize_t write_ports(struct file *file, char *buf, size_t size) 692bedbdd8bSNeil Brown { 693bedbdd8bSNeil Brown ssize_t rv; 6943dd98a3bSJeff Layton 695bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 696bedbdd8bSNeil Brown rv = __write_ports(file, buf, size); 697bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 698bedbdd8bSNeil Brown return rv; 699bedbdd8bSNeil Brown } 700bedbdd8bSNeil Brown 701bedbdd8bSNeil Brown 702596bbe53SNeilBrown int nfsd_max_blksize; 703596bbe53SNeilBrown 704596bbe53SNeilBrown static ssize_t write_maxblksize(struct file *file, char *buf, size_t size) 705596bbe53SNeilBrown { 706596bbe53SNeilBrown char *mesg = buf; 707596bbe53SNeilBrown if (size > 0) { 708596bbe53SNeilBrown int bsize; 709596bbe53SNeilBrown int rv = get_int(&mesg, &bsize); 710596bbe53SNeilBrown if (rv) 711596bbe53SNeilBrown return rv; 712596bbe53SNeilBrown /* force bsize into allowed range and 713596bbe53SNeilBrown * required alignment. 714596bbe53SNeilBrown */ 715596bbe53SNeilBrown if (bsize < 1024) 716596bbe53SNeilBrown bsize = 1024; 717596bbe53SNeilBrown if (bsize > NFSSVC_MAXBLKSIZE) 718596bbe53SNeilBrown bsize = NFSSVC_MAXBLKSIZE; 719596bbe53SNeilBrown bsize &= ~(1024-1); 720bedbdd8bSNeil Brown mutex_lock(&nfsd_mutex); 721596bbe53SNeilBrown if (nfsd_serv && nfsd_serv->sv_nrthreads) { 722bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 723596bbe53SNeilBrown return -EBUSY; 724596bbe53SNeilBrown } 725596bbe53SNeilBrown nfsd_max_blksize = bsize; 726bedbdd8bSNeil Brown mutex_unlock(&nfsd_mutex); 727596bbe53SNeilBrown } 728596bbe53SNeilBrown return sprintf(buf, "%d\n", nfsd_max_blksize); 729596bbe53SNeilBrown } 730596bbe53SNeilBrown 73170c3b76cSNeilBrown #ifdef CONFIG_NFSD_V4 7321da177e4SLinus Torvalds extern time_t nfs4_leasetime(void); 7331da177e4SLinus Torvalds 7343dd98a3bSJeff Layton static ssize_t __write_leasetime(struct file *file, char *buf, size_t size) 7351da177e4SLinus Torvalds { 7361da177e4SLinus Torvalds /* if size > 10 seconds, call 7371da177e4SLinus Torvalds * nfs4_reset_lease() then write out the new lease (seconds) as reply 7381da177e4SLinus Torvalds */ 7391da177e4SLinus Torvalds char *mesg = buf; 7403dd98a3bSJeff Layton int rv, lease; 7411da177e4SLinus Torvalds 7421da177e4SLinus Torvalds if (size > 0) { 7433dd98a3bSJeff Layton if (nfsd_serv) 7443dd98a3bSJeff Layton return -EBUSY; 7451da177e4SLinus Torvalds rv = get_int(&mesg, &lease); 7461da177e4SLinus Torvalds if (rv) 7471da177e4SLinus Torvalds return rv; 7481da177e4SLinus Torvalds if (lease < 10 || lease > 3600) 7491da177e4SLinus Torvalds return -EINVAL; 7501da177e4SLinus Torvalds nfs4_reset_lease(lease); 7511da177e4SLinus Torvalds } 7521da177e4SLinus Torvalds sprintf(buf, "%ld\n", nfs4_lease_time()); 7531da177e4SLinus Torvalds return strlen(buf); 7541da177e4SLinus Torvalds } 7551da177e4SLinus Torvalds 7563dd98a3bSJeff Layton static ssize_t write_leasetime(struct file *file, char *buf, size_t size) 7573dd98a3bSJeff Layton { 7583dd98a3bSJeff Layton ssize_t rv; 7593dd98a3bSJeff Layton 7603dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 7613dd98a3bSJeff Layton rv = __write_leasetime(file, buf, size); 7623dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 7633dd98a3bSJeff Layton return rv; 7643dd98a3bSJeff Layton } 7653dd98a3bSJeff Layton 7663dd98a3bSJeff Layton extern char *nfs4_recoverydir(void); 7673dd98a3bSJeff Layton 7683dd98a3bSJeff Layton static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size) 7690964a3d3SNeilBrown { 7700964a3d3SNeilBrown char *mesg = buf; 7710964a3d3SNeilBrown char *recdir; 7720964a3d3SNeilBrown int len, status; 7730964a3d3SNeilBrown 7743dd98a3bSJeff Layton if (size > 0) { 7753dd98a3bSJeff Layton if (nfsd_serv) 7763dd98a3bSJeff Layton return -EBUSY; 7773dd98a3bSJeff Layton if (size > PATH_MAX || buf[size-1] != '\n') 7780964a3d3SNeilBrown return -EINVAL; 7790964a3d3SNeilBrown buf[size-1] = 0; 7800964a3d3SNeilBrown 7810964a3d3SNeilBrown recdir = mesg; 7820964a3d3SNeilBrown len = qword_get(&mesg, recdir, size); 7830964a3d3SNeilBrown if (len <= 0) 7840964a3d3SNeilBrown return -EINVAL; 7850964a3d3SNeilBrown 7860964a3d3SNeilBrown status = nfs4_reset_recoverydir(recdir); 7873dd98a3bSJeff Layton } 7883dd98a3bSJeff Layton sprintf(buf, "%s\n", nfs4_recoverydir()); 7890964a3d3SNeilBrown return strlen(buf); 7900964a3d3SNeilBrown } 7913dd98a3bSJeff Layton 7923dd98a3bSJeff Layton static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) 7933dd98a3bSJeff Layton { 7943dd98a3bSJeff Layton ssize_t rv; 7953dd98a3bSJeff Layton 7963dd98a3bSJeff Layton mutex_lock(&nfsd_mutex); 7973dd98a3bSJeff Layton rv = __write_recoverydir(file, buf, size); 7983dd98a3bSJeff Layton mutex_unlock(&nfsd_mutex); 7993dd98a3bSJeff Layton return rv; 8003dd98a3bSJeff Layton } 8013dd98a3bSJeff Layton 80270c3b76cSNeilBrown #endif 8030964a3d3SNeilBrown 8041da177e4SLinus Torvalds /*----------------------------------------------------------------------------*/ 8051da177e4SLinus Torvalds /* 8061da177e4SLinus Torvalds * populating the filesystem. 8071da177e4SLinus Torvalds */ 8081da177e4SLinus Torvalds 8091da177e4SLinus Torvalds static int nfsd_fill_super(struct super_block * sb, void * data, int silent) 8101da177e4SLinus Torvalds { 8111da177e4SLinus Torvalds static struct tree_descr nfsd_files[] = { 8121da177e4SLinus Torvalds [NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR}, 8131da177e4SLinus Torvalds [NFSD_Add] = {".add", &transaction_ops, S_IWUSR}, 8141da177e4SLinus Torvalds [NFSD_Del] = {".del", &transaction_ops, S_IWUSR}, 8151da177e4SLinus Torvalds [NFSD_Export] = {".export", &transaction_ops, S_IWUSR}, 8161da177e4SLinus Torvalds [NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR}, 8171da177e4SLinus Torvalds [NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR}, 8181da177e4SLinus Torvalds [NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR}, 8191da177e4SLinus Torvalds [NFSD_List] = {"exports", &exports_operations, S_IRUGO}, 8204373ea84SWendy Cheng [NFSD_FO_UnlockIP] = {"unlock_ip", 8214373ea84SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 82217efa372SWendy Cheng [NFSD_FO_UnlockFS] = {"unlock_filesystem", 82317efa372SWendy Cheng &transaction_ops, S_IWUSR|S_IRUSR}, 8241da177e4SLinus Torvalds [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, 8251da177e4SLinus Torvalds [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, 826eed2965aSGreg Banks [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR}, 82770c3b76cSNeilBrown [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, 82880212d59SNeilBrown [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, 829596bbe53SNeilBrown [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO}, 8301da177e4SLinus Torvalds #ifdef CONFIG_NFSD_V4 8311da177e4SLinus Torvalds [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, 8320964a3d3SNeilBrown [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, 8331da177e4SLinus Torvalds #endif 8341da177e4SLinus Torvalds /* last one */ {""} 8351da177e4SLinus Torvalds }; 8361da177e4SLinus Torvalds return simple_fill_super(sb, 0x6e667364, nfsd_files); 8371da177e4SLinus Torvalds } 8381da177e4SLinus Torvalds 839454e2398SDavid Howells static int nfsd_get_sb(struct file_system_type *fs_type, 840454e2398SDavid Howells int flags, const char *dev_name, void *data, struct vfsmount *mnt) 8411da177e4SLinus Torvalds { 842454e2398SDavid Howells return get_sb_single(fs_type, flags, data, nfsd_fill_super, mnt); 8431da177e4SLinus Torvalds } 8441da177e4SLinus Torvalds 8451da177e4SLinus Torvalds static struct file_system_type nfsd_fs_type = { 8461da177e4SLinus Torvalds .owner = THIS_MODULE, 8471da177e4SLinus Torvalds .name = "nfsd", 8481da177e4SLinus Torvalds .get_sb = nfsd_get_sb, 8491da177e4SLinus Torvalds .kill_sb = kill_litter_super, 8501da177e4SLinus Torvalds }; 8511da177e4SLinus Torvalds 852e331f606SJ. Bruce Fields #ifdef CONFIG_PROC_FS 853e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 854e331f606SJ. Bruce Fields { 855e331f606SJ. Bruce Fields struct proc_dir_entry *entry; 856e331f606SJ. Bruce Fields 857e331f606SJ. Bruce Fields entry = proc_mkdir("fs/nfs", NULL); 858e331f606SJ. Bruce Fields if (!entry) 859e331f606SJ. Bruce Fields return -ENOMEM; 8609ef2db26SDenis V. Lunev entry = proc_create("exports", 0, entry, &exports_operations); 861e331f606SJ. Bruce Fields if (!entry) 862e331f606SJ. Bruce Fields return -ENOMEM; 863e331f606SJ. Bruce Fields return 0; 864e331f606SJ. Bruce Fields } 865e331f606SJ. Bruce Fields #else /* CONFIG_PROC_FS */ 866e331f606SJ. Bruce Fields static int create_proc_exports_entry(void) 867e331f606SJ. Bruce Fields { 868e331f606SJ. Bruce Fields return 0; 869e331f606SJ. Bruce Fields } 870e331f606SJ. Bruce Fields #endif 871e331f606SJ. Bruce Fields 8721da177e4SLinus Torvalds static int __init init_nfsd(void) 8731da177e4SLinus Torvalds { 8741da177e4SLinus Torvalds int retval; 8751da177e4SLinus Torvalds printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n"); 8761da177e4SLinus Torvalds 877e8ff2a84SJ. Bruce Fields retval = nfs4_state_init(); /* nfs4 locking state */ 878e8ff2a84SJ. Bruce Fields if (retval) 879e8ff2a84SJ. Bruce Fields return retval; 8801da177e4SLinus Torvalds nfsd_stat_init(); /* Statistics */ 881d5c3428bSJ. Bruce Fields retval = nfsd_reply_cache_init(); 882d5c3428bSJ. Bruce Fields if (retval) 883d5c3428bSJ. Bruce Fields goto out_free_stat; 884dbf847ecSJ. Bruce Fields retval = nfsd_export_init(); 885dbf847ecSJ. Bruce Fields if (retval) 886dbf847ecSJ. Bruce Fields goto out_free_cache; 8871da177e4SLinus Torvalds nfsd_lockd_init(); /* lockd->nfsd callbacks */ 888dbf847ecSJ. Bruce Fields retval = nfsd_idmap_init(); 889dbf847ecSJ. Bruce Fields if (retval) 890dbf847ecSJ. Bruce Fields goto out_free_lockd; 891e331f606SJ. Bruce Fields retval = create_proc_exports_entry(); 892e331f606SJ. Bruce Fields if (retval) 893e331f606SJ. Bruce Fields goto out_free_idmap; 8941da177e4SLinus Torvalds retval = register_filesystem(&nfsd_fs_type); 89526808d3fSJ. Bruce Fields if (retval) 89626808d3fSJ. Bruce Fields goto out_free_all; 89726808d3fSJ. Bruce Fields return 0; 89826808d3fSJ. Bruce Fields out_free_all: 8991da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 9001da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 901e331f606SJ. Bruce Fields out_free_idmap: 902dbf847ecSJ. Bruce Fields nfsd_idmap_shutdown(); 903dbf847ecSJ. Bruce Fields out_free_lockd: 9041da177e4SLinus Torvalds nfsd_lockd_shutdown(); 905e331f606SJ. Bruce Fields nfsd_export_shutdown(); 906dbf847ecSJ. Bruce Fields out_free_cache: 907e331f606SJ. Bruce Fields nfsd_reply_cache_shutdown(); 908d5c3428bSJ. Bruce Fields out_free_stat: 909d5c3428bSJ. Bruce Fields nfsd_stat_shutdown(); 91046b25895SJ. Bruce Fields nfsd4_free_slabs(); 9111da177e4SLinus Torvalds return retval; 9121da177e4SLinus Torvalds } 9131da177e4SLinus Torvalds 9141da177e4SLinus Torvalds static void __exit exit_nfsd(void) 9151da177e4SLinus Torvalds { 9161da177e4SLinus Torvalds nfsd_export_shutdown(); 917d5c3428bSJ. Bruce Fields nfsd_reply_cache_shutdown(); 9181da177e4SLinus Torvalds remove_proc_entry("fs/nfs/exports", NULL); 9191da177e4SLinus Torvalds remove_proc_entry("fs/nfs", NULL); 9201da177e4SLinus Torvalds nfsd_stat_shutdown(); 9211da177e4SLinus Torvalds nfsd_lockd_shutdown(); 9221da177e4SLinus Torvalds nfsd_idmap_shutdown(); 923e8ff2a84SJ. Bruce Fields nfsd4_free_slabs(); 9241da177e4SLinus Torvalds unregister_filesystem(&nfsd_fs_type); 9251da177e4SLinus Torvalds } 9261da177e4SLinus Torvalds 9271da177e4SLinus Torvalds MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); 9281da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 9291da177e4SLinus Torvalds module_init(init_nfsd) 9301da177e4SLinus Torvalds module_exit(exit_nfsd) 931