11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/fs/nfs/proc.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 1992, 1993, 1994 Rick Sladkey 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * OS-independent nfs remote procedure call functions 71da177e4SLinus Torvalds * 81da177e4SLinus Torvalds * Tuned by Alan Cox <A.Cox@swansea.ac.uk> for >3K buffers 91da177e4SLinus Torvalds * so at last we can have decent(ish) throughput off a 101da177e4SLinus Torvalds * Sun server. 111da177e4SLinus Torvalds * 121da177e4SLinus Torvalds * Coding optimized and cleaned up by Florian La Roche. 131da177e4SLinus Torvalds * Note: Error returns are optimized for NFS_OK, which isn't translated via 141da177e4SLinus Torvalds * nfs_stat_to_errno(), but happens to be already the right return code. 151da177e4SLinus Torvalds * 161da177e4SLinus Torvalds * Also, the code currently doesn't check the size of the packet, when 171da177e4SLinus Torvalds * it decodes the packet. 181da177e4SLinus Torvalds * 191da177e4SLinus Torvalds * Feel free to fix it and mail me the diffs if it worries you. 201da177e4SLinus Torvalds * 211da177e4SLinus Torvalds * Completely rewritten to support the new RPC call interface; 221da177e4SLinus Torvalds * rewrote and moved the entire XDR stuff to xdr.c 231da177e4SLinus Torvalds * --Olaf Kirch June 1996 241da177e4SLinus Torvalds * 251da177e4SLinus Torvalds * The code below initializes all auto variables explicitly, otherwise 261da177e4SLinus Torvalds * it will fail to work as a module (gcc generates a memset call for an 271da177e4SLinus Torvalds * incomplete struct). 281da177e4SLinus Torvalds */ 291da177e4SLinus Torvalds 301da177e4SLinus Torvalds #include <linux/types.h> 311da177e4SLinus Torvalds #include <linux/param.h> 321da177e4SLinus Torvalds #include <linux/slab.h> 331da177e4SLinus Torvalds #include <linux/time.h> 341da177e4SLinus Torvalds #include <linux/mm.h> 351da177e4SLinus Torvalds #include <linux/utsname.h> 361da177e4SLinus Torvalds #include <linux/errno.h> 371da177e4SLinus Torvalds #include <linux/string.h> 381da177e4SLinus Torvalds #include <linux/in.h> 391da177e4SLinus Torvalds #include <linux/pagemap.h> 401da177e4SLinus Torvalds #include <linux/sunrpc/clnt.h> 411da177e4SLinus Torvalds #include <linux/nfs.h> 421da177e4SLinus Torvalds #include <linux/nfs2.h> 431da177e4SLinus Torvalds #include <linux/nfs_fs.h> 441da177e4SLinus Torvalds #include <linux/nfs_page.h> 451da177e4SLinus Torvalds #include <linux/lockd/bind.h> 46f7b422b1SDavid Howells #include "internal.h" 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds #define NFSDBG_FACILITY NFSDBG_PROC 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds /* 511da177e4SLinus Torvalds * Bare-bones access to getattr: this is for nfs_read_super. 521da177e4SLinus Torvalds */ 531da177e4SLinus Torvalds static int 541da177e4SLinus Torvalds nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, 551da177e4SLinus Torvalds struct nfs_fsinfo *info) 561da177e4SLinus Torvalds { 571da177e4SLinus Torvalds struct nfs_fattr *fattr = info->fattr; 581da177e4SLinus Torvalds struct nfs2_fsstat fsinfo; 59dead28daSChuck Lever struct rpc_message msg = { 60dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_GETATTR], 61dead28daSChuck Lever .rpc_argp = fhandle, 62dead28daSChuck Lever .rpc_resp = fattr, 63dead28daSChuck Lever }; 641da177e4SLinus Torvalds int status; 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds dprintk("%s: call getattr\n", __FUNCTION__); 670e574af1STrond Myklebust nfs_fattr_init(fattr); 685006a76cSDavid Howells status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0); 691da177e4SLinus Torvalds dprintk("%s: reply getattr: %d\n", __FUNCTION__, status); 701da177e4SLinus Torvalds if (status) 711da177e4SLinus Torvalds return status; 721da177e4SLinus Torvalds dprintk("%s: call statfs\n", __FUNCTION__); 73dead28daSChuck Lever msg.rpc_proc = &nfs_procedures[NFSPROC_STATFS]; 74dead28daSChuck Lever msg.rpc_resp = &fsinfo; 755006a76cSDavid Howells status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0); 761da177e4SLinus Torvalds dprintk("%s: reply statfs: %d\n", __FUNCTION__, status); 771da177e4SLinus Torvalds if (status) 781da177e4SLinus Torvalds return status; 791da177e4SLinus Torvalds info->rtmax = NFS_MAXDATA; 801da177e4SLinus Torvalds info->rtpref = fsinfo.tsize; 811da177e4SLinus Torvalds info->rtmult = fsinfo.bsize; 821da177e4SLinus Torvalds info->wtmax = NFS_MAXDATA; 831da177e4SLinus Torvalds info->wtpref = fsinfo.tsize; 841da177e4SLinus Torvalds info->wtmult = fsinfo.bsize; 851da177e4SLinus Torvalds info->dtpref = fsinfo.tsize; 861da177e4SLinus Torvalds info->maxfilesize = 0x7FFFFFFF; 871da177e4SLinus Torvalds info->lease_time = 0; 881da177e4SLinus Torvalds return 0; 891da177e4SLinus Torvalds } 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds /* 921da177e4SLinus Torvalds * One function for each procedure in the NFS protocol. 931da177e4SLinus Torvalds */ 941da177e4SLinus Torvalds static int 951da177e4SLinus Torvalds nfs_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, 961da177e4SLinus Torvalds struct nfs_fattr *fattr) 971da177e4SLinus Torvalds { 98dead28daSChuck Lever struct rpc_message msg = { 99dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_GETATTR], 100dead28daSChuck Lever .rpc_argp = fhandle, 101dead28daSChuck Lever .rpc_resp = fattr, 102dead28daSChuck Lever }; 1031da177e4SLinus Torvalds int status; 1041da177e4SLinus Torvalds 1051da177e4SLinus Torvalds dprintk("NFS call getattr\n"); 1060e574af1STrond Myklebust nfs_fattr_init(fattr); 107dead28daSChuck Lever status = rpc_call_sync(server->client, &msg, 0); 1081da177e4SLinus Torvalds dprintk("NFS reply getattr: %d\n", status); 1091da177e4SLinus Torvalds return status; 1101da177e4SLinus Torvalds } 1111da177e4SLinus Torvalds 1121da177e4SLinus Torvalds static int 1131da177e4SLinus Torvalds nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, 1141da177e4SLinus Torvalds struct iattr *sattr) 1151da177e4SLinus Torvalds { 1161da177e4SLinus Torvalds struct inode *inode = dentry->d_inode; 1171da177e4SLinus Torvalds struct nfs_sattrargs arg = { 1181da177e4SLinus Torvalds .fh = NFS_FH(inode), 1191da177e4SLinus Torvalds .sattr = sattr 1201da177e4SLinus Torvalds }; 121dead28daSChuck Lever struct rpc_message msg = { 122dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_SETATTR], 123dead28daSChuck Lever .rpc_argp = &arg, 124dead28daSChuck Lever .rpc_resp = fattr, 125dead28daSChuck Lever }; 1261da177e4SLinus Torvalds int status; 1271da177e4SLinus Torvalds 128cf3fff54STrond Myklebust /* Mask out the non-modebit related stuff from attr->ia_mode */ 129cf3fff54STrond Myklebust sattr->ia_mode &= S_IALLUGO; 130cf3fff54STrond Myklebust 1311da177e4SLinus Torvalds dprintk("NFS call setattr\n"); 1320e574af1STrond Myklebust nfs_fattr_init(fattr); 133dead28daSChuck Lever status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); 13465e4308dSTrond Myklebust if (status == 0) 13565e4308dSTrond Myklebust nfs_setattr_update_inode(inode, sattr); 1361da177e4SLinus Torvalds dprintk("NFS reply setattr: %d\n", status); 1371da177e4SLinus Torvalds return status; 1381da177e4SLinus Torvalds } 1391da177e4SLinus Torvalds 1401da177e4SLinus Torvalds static int 1411da177e4SLinus Torvalds nfs_proc_lookup(struct inode *dir, struct qstr *name, 1421da177e4SLinus Torvalds struct nfs_fh *fhandle, struct nfs_fattr *fattr) 1431da177e4SLinus Torvalds { 1441da177e4SLinus Torvalds struct nfs_diropargs arg = { 1451da177e4SLinus Torvalds .fh = NFS_FH(dir), 1461da177e4SLinus Torvalds .name = name->name, 1471da177e4SLinus Torvalds .len = name->len 1481da177e4SLinus Torvalds }; 1491da177e4SLinus Torvalds struct nfs_diropok res = { 1501da177e4SLinus Torvalds .fh = fhandle, 1511da177e4SLinus Torvalds .fattr = fattr 1521da177e4SLinus Torvalds }; 153dead28daSChuck Lever struct rpc_message msg = { 154dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_LOOKUP], 155dead28daSChuck Lever .rpc_argp = &arg, 156dead28daSChuck Lever .rpc_resp = &res, 157dead28daSChuck Lever }; 1581da177e4SLinus Torvalds int status; 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvalds dprintk("NFS call lookup %s\n", name->name); 1610e574af1STrond Myklebust nfs_fattr_init(fattr); 162dead28daSChuck Lever status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 1631da177e4SLinus Torvalds dprintk("NFS reply lookup: %d\n", status); 1641da177e4SLinus Torvalds return status; 1651da177e4SLinus Torvalds } 1661da177e4SLinus Torvalds 1671da177e4SLinus Torvalds static int nfs_proc_readlink(struct inode *inode, struct page *page, 1681da177e4SLinus Torvalds unsigned int pgbase, unsigned int pglen) 1691da177e4SLinus Torvalds { 1701da177e4SLinus Torvalds struct nfs_readlinkargs args = { 1711da177e4SLinus Torvalds .fh = NFS_FH(inode), 1721da177e4SLinus Torvalds .pgbase = pgbase, 1731da177e4SLinus Torvalds .pglen = pglen, 1741da177e4SLinus Torvalds .pages = &page 1751da177e4SLinus Torvalds }; 176dead28daSChuck Lever struct rpc_message msg = { 177dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_READLINK], 178dead28daSChuck Lever .rpc_argp = &args, 179dead28daSChuck Lever }; 1801da177e4SLinus Torvalds int status; 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds dprintk("NFS call readlink\n"); 183dead28daSChuck Lever status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); 1841da177e4SLinus Torvalds dprintk("NFS reply readlink: %d\n", status); 1851da177e4SLinus Torvalds return status; 1861da177e4SLinus Torvalds } 1871da177e4SLinus Torvalds 1881da177e4SLinus Torvalds static int 1891da177e4SLinus Torvalds nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, 19002a913a7STrond Myklebust int flags, struct nameidata *nd) 1911da177e4SLinus Torvalds { 1921da177e4SLinus Torvalds struct nfs_fh fhandle; 1931da177e4SLinus Torvalds struct nfs_fattr fattr; 1941da177e4SLinus Torvalds struct nfs_createargs arg = { 1951da177e4SLinus Torvalds .fh = NFS_FH(dir), 1961da177e4SLinus Torvalds .name = dentry->d_name.name, 1971da177e4SLinus Torvalds .len = dentry->d_name.len, 1981da177e4SLinus Torvalds .sattr = sattr 1991da177e4SLinus Torvalds }; 2001da177e4SLinus Torvalds struct nfs_diropok res = { 2011da177e4SLinus Torvalds .fh = &fhandle, 2021da177e4SLinus Torvalds .fattr = &fattr 2031da177e4SLinus Torvalds }; 204dead28daSChuck Lever struct rpc_message msg = { 205dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_CREATE], 206dead28daSChuck Lever .rpc_argp = &arg, 207dead28daSChuck Lever .rpc_resp = &res, 208dead28daSChuck Lever }; 2091da177e4SLinus Torvalds int status; 2101da177e4SLinus Torvalds 2110e574af1STrond Myklebust nfs_fattr_init(&fattr); 2121da177e4SLinus Torvalds dprintk("NFS call create %s\n", dentry->d_name.name); 213dead28daSChuck Lever status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 2141da177e4SLinus Torvalds if (status == 0) 2151da177e4SLinus Torvalds status = nfs_instantiate(dentry, &fhandle, &fattr); 2161da177e4SLinus Torvalds dprintk("NFS reply create: %d\n", status); 2171da177e4SLinus Torvalds return status; 2181da177e4SLinus Torvalds } 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds /* 2211da177e4SLinus Torvalds * In NFSv2, mknod is grafted onto the create call. 2221da177e4SLinus Torvalds */ 2231da177e4SLinus Torvalds static int 2241da177e4SLinus Torvalds nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, 2251da177e4SLinus Torvalds dev_t rdev) 2261da177e4SLinus Torvalds { 2271da177e4SLinus Torvalds struct nfs_fh fhandle; 2281da177e4SLinus Torvalds struct nfs_fattr fattr; 2291da177e4SLinus Torvalds struct nfs_createargs arg = { 2301da177e4SLinus Torvalds .fh = NFS_FH(dir), 2311da177e4SLinus Torvalds .name = dentry->d_name.name, 2321da177e4SLinus Torvalds .len = dentry->d_name.len, 2331da177e4SLinus Torvalds .sattr = sattr 2341da177e4SLinus Torvalds }; 2351da177e4SLinus Torvalds struct nfs_diropok res = { 2361da177e4SLinus Torvalds .fh = &fhandle, 2371da177e4SLinus Torvalds .fattr = &fattr 2381da177e4SLinus Torvalds }; 239dead28daSChuck Lever struct rpc_message msg = { 240dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_CREATE], 241dead28daSChuck Lever .rpc_argp = &arg, 242dead28daSChuck Lever .rpc_resp = &res, 243dead28daSChuck Lever }; 2441da177e4SLinus Torvalds int status, mode; 2451da177e4SLinus Torvalds 2461da177e4SLinus Torvalds dprintk("NFS call mknod %s\n", dentry->d_name.name); 2471da177e4SLinus Torvalds 2481da177e4SLinus Torvalds mode = sattr->ia_mode; 2491da177e4SLinus Torvalds if (S_ISFIFO(mode)) { 2501da177e4SLinus Torvalds sattr->ia_mode = (mode & ~S_IFMT) | S_IFCHR; 2511da177e4SLinus Torvalds sattr->ia_valid &= ~ATTR_SIZE; 2521da177e4SLinus Torvalds } else if (S_ISCHR(mode) || S_ISBLK(mode)) { 2531da177e4SLinus Torvalds sattr->ia_valid |= ATTR_SIZE; 2541da177e4SLinus Torvalds sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */ 2551da177e4SLinus Torvalds } 2561da177e4SLinus Torvalds 2570e574af1STrond Myklebust nfs_fattr_init(&fattr); 258dead28daSChuck Lever status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 259decf491fSTrond Myklebust nfs_mark_for_revalidate(dir); 2601da177e4SLinus Torvalds 2611da177e4SLinus Torvalds if (status == -EINVAL && S_ISFIFO(mode)) { 2621da177e4SLinus Torvalds sattr->ia_mode = mode; 2630e574af1STrond Myklebust nfs_fattr_init(&fattr); 264dead28daSChuck Lever status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 2651da177e4SLinus Torvalds } 2661da177e4SLinus Torvalds if (status == 0) 2671da177e4SLinus Torvalds status = nfs_instantiate(dentry, &fhandle, &fattr); 2681da177e4SLinus Torvalds dprintk("NFS reply mknod: %d\n", status); 2691da177e4SLinus Torvalds return status; 2701da177e4SLinus Torvalds } 2711da177e4SLinus Torvalds 2721da177e4SLinus Torvalds static int 2731da177e4SLinus Torvalds nfs_proc_remove(struct inode *dir, struct qstr *name) 2741da177e4SLinus Torvalds { 2754fdc17b2STrond Myklebust struct nfs_removeargs arg = { 2761da177e4SLinus Torvalds .fh = NFS_FH(dir), 2774fdc17b2STrond Myklebust .name.len = name->len, 2784fdc17b2STrond Myklebust .name.name = name->name, 2791da177e4SLinus Torvalds }; 2801da177e4SLinus Torvalds struct rpc_message msg = { 2811da177e4SLinus Torvalds .rpc_proc = &nfs_procedures[NFSPROC_REMOVE], 2821da177e4SLinus Torvalds .rpc_argp = &arg, 2831da177e4SLinus Torvalds }; 2841da177e4SLinus Torvalds int status; 2851da177e4SLinus Torvalds 2861da177e4SLinus Torvalds dprintk("NFS call remove %s\n", name->name); 2871da177e4SLinus Torvalds status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 288decf491fSTrond Myklebust nfs_mark_for_revalidate(dir); 2891da177e4SLinus Torvalds 2901da177e4SLinus Torvalds dprintk("NFS reply remove: %d\n", status); 2911da177e4SLinus Torvalds return status; 2921da177e4SLinus Torvalds } 2931da177e4SLinus Torvalds 294e4eff1a6STrond Myklebust static void 295e4eff1a6STrond Myklebust nfs_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) 2961da177e4SLinus Torvalds { 2971da177e4SLinus Torvalds msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE]; 2981da177e4SLinus Torvalds } 2991da177e4SLinus Torvalds 300e4eff1a6STrond Myklebust static int nfs_proc_unlink_done(struct rpc_task *task, struct inode *dir) 3011da177e4SLinus Torvalds { 302e4eff1a6STrond Myklebust nfs_mark_for_revalidate(dir); 303e4eff1a6STrond Myklebust return 1; 3041da177e4SLinus Torvalds } 3051da177e4SLinus Torvalds 3061da177e4SLinus Torvalds static int 3071da177e4SLinus Torvalds nfs_proc_rename(struct inode *old_dir, struct qstr *old_name, 3081da177e4SLinus Torvalds struct inode *new_dir, struct qstr *new_name) 3091da177e4SLinus Torvalds { 3101da177e4SLinus Torvalds struct nfs_renameargs arg = { 3111da177e4SLinus Torvalds .fromfh = NFS_FH(old_dir), 3121da177e4SLinus Torvalds .fromname = old_name->name, 3131da177e4SLinus Torvalds .fromlen = old_name->len, 3141da177e4SLinus Torvalds .tofh = NFS_FH(new_dir), 3151da177e4SLinus Torvalds .toname = new_name->name, 3161da177e4SLinus Torvalds .tolen = new_name->len 3171da177e4SLinus Torvalds }; 318dead28daSChuck Lever struct rpc_message msg = { 319dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_RENAME], 320dead28daSChuck Lever .rpc_argp = &arg, 321dead28daSChuck Lever }; 3221da177e4SLinus Torvalds int status; 3231da177e4SLinus Torvalds 3241da177e4SLinus Torvalds dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); 325dead28daSChuck Lever status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0); 326decf491fSTrond Myklebust nfs_mark_for_revalidate(old_dir); 327decf491fSTrond Myklebust nfs_mark_for_revalidate(new_dir); 3281da177e4SLinus Torvalds dprintk("NFS reply rename: %d\n", status); 3291da177e4SLinus Torvalds return status; 3301da177e4SLinus Torvalds } 3311da177e4SLinus Torvalds 3321da177e4SLinus Torvalds static int 3331da177e4SLinus Torvalds nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) 3341da177e4SLinus Torvalds { 3351da177e4SLinus Torvalds struct nfs_linkargs arg = { 3361da177e4SLinus Torvalds .fromfh = NFS_FH(inode), 3371da177e4SLinus Torvalds .tofh = NFS_FH(dir), 3381da177e4SLinus Torvalds .toname = name->name, 3391da177e4SLinus Torvalds .tolen = name->len 3401da177e4SLinus Torvalds }; 341dead28daSChuck Lever struct rpc_message msg = { 342dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_LINK], 343dead28daSChuck Lever .rpc_argp = &arg, 344dead28daSChuck Lever }; 3451da177e4SLinus Torvalds int status; 3461da177e4SLinus Torvalds 3471da177e4SLinus Torvalds dprintk("NFS call link %s\n", name->name); 348dead28daSChuck Lever status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); 3495ba7cc48STrond Myklebust nfs_mark_for_revalidate(inode); 350decf491fSTrond Myklebust nfs_mark_for_revalidate(dir); 3511da177e4SLinus Torvalds dprintk("NFS reply link: %d\n", status); 3521da177e4SLinus Torvalds return status; 3531da177e4SLinus Torvalds } 3541da177e4SLinus Torvalds 3551da177e4SLinus Torvalds static int 35694a6d753SChuck Lever nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, 35794a6d753SChuck Lever unsigned int len, struct iattr *sattr) 3581da177e4SLinus Torvalds { 3594f390c15SChuck Lever struct nfs_fh fhandle; 3604f390c15SChuck Lever struct nfs_fattr fattr; 3611da177e4SLinus Torvalds struct nfs_symlinkargs arg = { 3621da177e4SLinus Torvalds .fromfh = NFS_FH(dir), 3634f390c15SChuck Lever .fromname = dentry->d_name.name, 3644f390c15SChuck Lever .fromlen = dentry->d_name.len, 36594a6d753SChuck Lever .pages = &page, 36694a6d753SChuck Lever .pathlen = len, 3671da177e4SLinus Torvalds .sattr = sattr 3681da177e4SLinus Torvalds }; 369dead28daSChuck Lever struct rpc_message msg = { 370dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_SYMLINK], 371dead28daSChuck Lever .rpc_argp = &arg, 372dead28daSChuck Lever }; 3731da177e4SLinus Torvalds int status; 3741da177e4SLinus Torvalds 37594a6d753SChuck Lever if (len > NFS2_MAXPATHLEN) 3761da177e4SLinus Torvalds return -ENAMETOOLONG; 3774f390c15SChuck Lever 37894a6d753SChuck Lever dprintk("NFS call symlink %s\n", dentry->d_name.name); 37994a6d753SChuck Lever 380dead28daSChuck Lever status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 381decf491fSTrond Myklebust nfs_mark_for_revalidate(dir); 3824f390c15SChuck Lever 3834f390c15SChuck Lever /* 3844f390c15SChuck Lever * V2 SYMLINK requests don't return any attributes. Setting the 3854f390c15SChuck Lever * filehandle size to zero indicates to nfs_instantiate that it 3864f390c15SChuck Lever * should fill in the data with a LOOKUP call on the wire. 3874f390c15SChuck Lever */ 3884f390c15SChuck Lever if (status == 0) { 3894f390c15SChuck Lever nfs_fattr_init(&fattr); 3904f390c15SChuck Lever fhandle.size = 0; 3914f390c15SChuck Lever status = nfs_instantiate(dentry, &fhandle, &fattr); 3924f390c15SChuck Lever } 3934f390c15SChuck Lever 3941da177e4SLinus Torvalds dprintk("NFS reply symlink: %d\n", status); 3951da177e4SLinus Torvalds return status; 3961da177e4SLinus Torvalds } 3971da177e4SLinus Torvalds 3981da177e4SLinus Torvalds static int 3991da177e4SLinus Torvalds nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) 4001da177e4SLinus Torvalds { 4011da177e4SLinus Torvalds struct nfs_fh fhandle; 4021da177e4SLinus Torvalds struct nfs_fattr fattr; 4031da177e4SLinus Torvalds struct nfs_createargs arg = { 4041da177e4SLinus Torvalds .fh = NFS_FH(dir), 4051da177e4SLinus Torvalds .name = dentry->d_name.name, 4061da177e4SLinus Torvalds .len = dentry->d_name.len, 4071da177e4SLinus Torvalds .sattr = sattr 4081da177e4SLinus Torvalds }; 4091da177e4SLinus Torvalds struct nfs_diropok res = { 4101da177e4SLinus Torvalds .fh = &fhandle, 4111da177e4SLinus Torvalds .fattr = &fattr 4121da177e4SLinus Torvalds }; 413dead28daSChuck Lever struct rpc_message msg = { 414dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_MKDIR], 415dead28daSChuck Lever .rpc_argp = &arg, 416dead28daSChuck Lever .rpc_resp = &res, 417dead28daSChuck Lever }; 4181da177e4SLinus Torvalds int status; 4191da177e4SLinus Torvalds 4201da177e4SLinus Torvalds dprintk("NFS call mkdir %s\n", dentry->d_name.name); 4210e574af1STrond Myklebust nfs_fattr_init(&fattr); 422dead28daSChuck Lever status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 423decf491fSTrond Myklebust nfs_mark_for_revalidate(dir); 4241da177e4SLinus Torvalds if (status == 0) 4251da177e4SLinus Torvalds status = nfs_instantiate(dentry, &fhandle, &fattr); 4261da177e4SLinus Torvalds dprintk("NFS reply mkdir: %d\n", status); 4271da177e4SLinus Torvalds return status; 4281da177e4SLinus Torvalds } 4291da177e4SLinus Torvalds 4301da177e4SLinus Torvalds static int 4311da177e4SLinus Torvalds nfs_proc_rmdir(struct inode *dir, struct qstr *name) 4321da177e4SLinus Torvalds { 4331da177e4SLinus Torvalds struct nfs_diropargs arg = { 4341da177e4SLinus Torvalds .fh = NFS_FH(dir), 4351da177e4SLinus Torvalds .name = name->name, 4361da177e4SLinus Torvalds .len = name->len 4371da177e4SLinus Torvalds }; 438dead28daSChuck Lever struct rpc_message msg = { 439dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_RMDIR], 440dead28daSChuck Lever .rpc_argp = &arg, 441dead28daSChuck Lever }; 4421da177e4SLinus Torvalds int status; 4431da177e4SLinus Torvalds 4441da177e4SLinus Torvalds dprintk("NFS call rmdir %s\n", name->name); 445dead28daSChuck Lever status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 446decf491fSTrond Myklebust nfs_mark_for_revalidate(dir); 4471da177e4SLinus Torvalds dprintk("NFS reply rmdir: %d\n", status); 4481da177e4SLinus Torvalds return status; 4491da177e4SLinus Torvalds } 4501da177e4SLinus Torvalds 4511da177e4SLinus Torvalds /* 4521da177e4SLinus Torvalds * The READDIR implementation is somewhat hackish - we pass a temporary 4531da177e4SLinus Torvalds * buffer to the encode function, which installs it in the receive 4541da177e4SLinus Torvalds * the receive iovec. The decode function just parses the reply to make 4551da177e4SLinus Torvalds * sure it is syntactically correct; the entries itself are decoded 4561da177e4SLinus Torvalds * from nfs_readdir by calling the decode_entry function directly. 4571da177e4SLinus Torvalds */ 4581da177e4SLinus Torvalds static int 4591da177e4SLinus Torvalds nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, 4601da177e4SLinus Torvalds u64 cookie, struct page *page, unsigned int count, int plus) 4611da177e4SLinus Torvalds { 4621da177e4SLinus Torvalds struct inode *dir = dentry->d_inode; 4631da177e4SLinus Torvalds struct nfs_readdirargs arg = { 4641da177e4SLinus Torvalds .fh = NFS_FH(dir), 4651da177e4SLinus Torvalds .cookie = cookie, 4661da177e4SLinus Torvalds .count = count, 467dead28daSChuck Lever .pages = &page, 4681da177e4SLinus Torvalds }; 4691da177e4SLinus Torvalds struct rpc_message msg = { 4701da177e4SLinus Torvalds .rpc_proc = &nfs_procedures[NFSPROC_READDIR], 4711da177e4SLinus Torvalds .rpc_argp = &arg, 472dead28daSChuck Lever .rpc_cred = cred, 4731da177e4SLinus Torvalds }; 4741da177e4SLinus Torvalds int status; 4751da177e4SLinus Torvalds 4761da177e4SLinus Torvalds dprintk("NFS call readdir %d\n", (unsigned int)cookie); 4771da177e4SLinus Torvalds status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); 4781da177e4SLinus Torvalds 4791da177e4SLinus Torvalds dprintk("NFS reply readdir: %d\n", status); 4801da177e4SLinus Torvalds return status; 4811da177e4SLinus Torvalds } 4821da177e4SLinus Torvalds 4831da177e4SLinus Torvalds static int 4841da177e4SLinus Torvalds nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, 4851da177e4SLinus Torvalds struct nfs_fsstat *stat) 4861da177e4SLinus Torvalds { 4871da177e4SLinus Torvalds struct nfs2_fsstat fsinfo; 488dead28daSChuck Lever struct rpc_message msg = { 489dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_STATFS], 490dead28daSChuck Lever .rpc_argp = fhandle, 491dead28daSChuck Lever .rpc_resp = &fsinfo, 492dead28daSChuck Lever }; 4931da177e4SLinus Torvalds int status; 4941da177e4SLinus Torvalds 4951da177e4SLinus Torvalds dprintk("NFS call statfs\n"); 4960e574af1STrond Myklebust nfs_fattr_init(stat->fattr); 497dead28daSChuck Lever status = rpc_call_sync(server->client, &msg, 0); 4981da177e4SLinus Torvalds dprintk("NFS reply statfs: %d\n", status); 4991da177e4SLinus Torvalds if (status) 5001da177e4SLinus Torvalds goto out; 5011da177e4SLinus Torvalds stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize; 5021da177e4SLinus Torvalds stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize; 5031da177e4SLinus Torvalds stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize; 5041da177e4SLinus Torvalds stat->tfiles = 0; 5051da177e4SLinus Torvalds stat->ffiles = 0; 5061da177e4SLinus Torvalds stat->afiles = 0; 5071da177e4SLinus Torvalds out: 5081da177e4SLinus Torvalds return status; 5091da177e4SLinus Torvalds } 5101da177e4SLinus Torvalds 5111da177e4SLinus Torvalds static int 5121da177e4SLinus Torvalds nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, 5131da177e4SLinus Torvalds struct nfs_fsinfo *info) 5141da177e4SLinus Torvalds { 5151da177e4SLinus Torvalds struct nfs2_fsstat fsinfo; 516dead28daSChuck Lever struct rpc_message msg = { 517dead28daSChuck Lever .rpc_proc = &nfs_procedures[NFSPROC_STATFS], 518dead28daSChuck Lever .rpc_argp = fhandle, 519dead28daSChuck Lever .rpc_resp = &fsinfo, 520dead28daSChuck Lever }; 5211da177e4SLinus Torvalds int status; 5221da177e4SLinus Torvalds 5231da177e4SLinus Torvalds dprintk("NFS call fsinfo\n"); 5240e574af1STrond Myklebust nfs_fattr_init(info->fattr); 525dead28daSChuck Lever status = rpc_call_sync(server->client, &msg, 0); 5261da177e4SLinus Torvalds dprintk("NFS reply fsinfo: %d\n", status); 5271da177e4SLinus Torvalds if (status) 5281da177e4SLinus Torvalds goto out; 5291da177e4SLinus Torvalds info->rtmax = NFS_MAXDATA; 5301da177e4SLinus Torvalds info->rtpref = fsinfo.tsize; 5311da177e4SLinus Torvalds info->rtmult = fsinfo.bsize; 5321da177e4SLinus Torvalds info->wtmax = NFS_MAXDATA; 5331da177e4SLinus Torvalds info->wtpref = fsinfo.tsize; 5341da177e4SLinus Torvalds info->wtmult = fsinfo.bsize; 5351da177e4SLinus Torvalds info->dtpref = fsinfo.tsize; 5361da177e4SLinus Torvalds info->maxfilesize = 0x7FFFFFFF; 5371da177e4SLinus Torvalds info->lease_time = 0; 5381da177e4SLinus Torvalds out: 5391da177e4SLinus Torvalds return status; 5401da177e4SLinus Torvalds } 5411da177e4SLinus Torvalds 5421da177e4SLinus Torvalds static int 5431da177e4SLinus Torvalds nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, 5441da177e4SLinus Torvalds struct nfs_pathconf *info) 5451da177e4SLinus Torvalds { 5461da177e4SLinus Torvalds info->max_link = 0; 5471da177e4SLinus Torvalds info->max_namelen = NFS2_MAXNAMLEN; 5481da177e4SLinus Torvalds return 0; 5491da177e4SLinus Torvalds } 5501da177e4SLinus Torvalds 551ec06c096STrond Myklebust static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data) 5521da177e4SLinus Torvalds { 5531da177e4SLinus Torvalds if (task->tk_status >= 0) { 5541da177e4SLinus Torvalds nfs_refresh_inode(data->inode, data->res.fattr); 5551da177e4SLinus Torvalds /* Emulate the eof flag, which isn't normally needed in NFSv2 5561da177e4SLinus Torvalds * as it is guaranteed to always return the file attributes 5571da177e4SLinus Torvalds */ 5581da177e4SLinus Torvalds if (data->args.offset + data->args.count >= data->res.fattr->size) 5591da177e4SLinus Torvalds data->res.eof = 1; 5601da177e4SLinus Torvalds } 561ec06c096STrond Myklebust return 0; 5621da177e4SLinus Torvalds } 5631da177e4SLinus Torvalds 564ec06c096STrond Myklebust static void nfs_proc_read_setup(struct nfs_read_data *data) 5651da177e4SLinus Torvalds { 5661da177e4SLinus Torvalds struct rpc_message msg = { 5671da177e4SLinus Torvalds .rpc_proc = &nfs_procedures[NFSPROC_READ], 5681da177e4SLinus Torvalds .rpc_argp = &data->args, 5691da177e4SLinus Torvalds .rpc_resp = &data->res, 5701da177e4SLinus Torvalds .rpc_cred = data->cred, 5711da177e4SLinus Torvalds }; 5721da177e4SLinus Torvalds 573ec06c096STrond Myklebust rpc_call_setup(&data->task, &msg, 0); 5741da177e4SLinus Torvalds } 5751da177e4SLinus Torvalds 576788e7a89STrond Myklebust static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data) 5771da177e4SLinus Torvalds { 5781da177e4SLinus Torvalds if (task->tk_status >= 0) 579decf491fSTrond Myklebust nfs_post_op_update_inode(data->inode, data->res.fattr); 580788e7a89STrond Myklebust return 0; 5811da177e4SLinus Torvalds } 5821da177e4SLinus Torvalds 583788e7a89STrond Myklebust static void nfs_proc_write_setup(struct nfs_write_data *data, int how) 5841da177e4SLinus Torvalds { 5851da177e4SLinus Torvalds struct rpc_message msg = { 5861da177e4SLinus Torvalds .rpc_proc = &nfs_procedures[NFSPROC_WRITE], 5871da177e4SLinus Torvalds .rpc_argp = &data->args, 5881da177e4SLinus Torvalds .rpc_resp = &data->res, 5891da177e4SLinus Torvalds .rpc_cred = data->cred, 5901da177e4SLinus Torvalds }; 5911da177e4SLinus Torvalds 5921da177e4SLinus Torvalds /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */ 5931da177e4SLinus Torvalds data->args.stable = NFS_FILE_SYNC; 5941da177e4SLinus Torvalds 5951da177e4SLinus Torvalds /* Finalize the task. */ 596788e7a89STrond Myklebust rpc_call_setup(&data->task, &msg, 0); 5971da177e4SLinus Torvalds } 5981da177e4SLinus Torvalds 5991da177e4SLinus Torvalds static void 6001da177e4SLinus Torvalds nfs_proc_commit_setup(struct nfs_write_data *data, int how) 6011da177e4SLinus Torvalds { 6021da177e4SLinus Torvalds BUG(); 6031da177e4SLinus Torvalds } 6041da177e4SLinus Torvalds 6051da177e4SLinus Torvalds static int 6061da177e4SLinus Torvalds nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl) 6071da177e4SLinus Torvalds { 60801cce933SJosef "Jeff" Sipek return nlmclnt_proc(filp->f_path.dentry->d_inode, cmd, fl); 6091da177e4SLinus Torvalds } 6101da177e4SLinus Torvalds 6111da177e4SLinus Torvalds 612509de811SDavid Howells const struct nfs_rpc_ops nfs_v2_clientops = { 6131da177e4SLinus Torvalds .version = 2, /* protocol version */ 6141da177e4SLinus Torvalds .dentry_ops = &nfs_dentry_operations, 6151da177e4SLinus Torvalds .dir_inode_ops = &nfs_dir_inode_operations, 61692cfc62cSJ. Bruce Fields .file_inode_ops = &nfs_file_inode_operations, 6171da177e4SLinus Torvalds .getroot = nfs_proc_get_root, 6181da177e4SLinus Torvalds .getattr = nfs_proc_getattr, 6191da177e4SLinus Torvalds .setattr = nfs_proc_setattr, 6201da177e4SLinus Torvalds .lookup = nfs_proc_lookup, 6211da177e4SLinus Torvalds .access = NULL, /* access */ 6221da177e4SLinus Torvalds .readlink = nfs_proc_readlink, 6231da177e4SLinus Torvalds .create = nfs_proc_create, 6241da177e4SLinus Torvalds .remove = nfs_proc_remove, 6251da177e4SLinus Torvalds .unlink_setup = nfs_proc_unlink_setup, 6261da177e4SLinus Torvalds .unlink_done = nfs_proc_unlink_done, 6271da177e4SLinus Torvalds .rename = nfs_proc_rename, 6281da177e4SLinus Torvalds .link = nfs_proc_link, 6291da177e4SLinus Torvalds .symlink = nfs_proc_symlink, 6301da177e4SLinus Torvalds .mkdir = nfs_proc_mkdir, 6311da177e4SLinus Torvalds .rmdir = nfs_proc_rmdir, 6321da177e4SLinus Torvalds .readdir = nfs_proc_readdir, 6331da177e4SLinus Torvalds .mknod = nfs_proc_mknod, 6341da177e4SLinus Torvalds .statfs = nfs_proc_statfs, 6351da177e4SLinus Torvalds .fsinfo = nfs_proc_fsinfo, 6361da177e4SLinus Torvalds .pathconf = nfs_proc_pathconf, 6371da177e4SLinus Torvalds .decode_dirent = nfs_decode_dirent, 6381da177e4SLinus Torvalds .read_setup = nfs_proc_read_setup, 639ec06c096STrond Myklebust .read_done = nfs_read_done, 6401da177e4SLinus Torvalds .write_setup = nfs_proc_write_setup, 641788e7a89STrond Myklebust .write_done = nfs_write_done, 6421da177e4SLinus Torvalds .commit_setup = nfs_proc_commit_setup, 6431da177e4SLinus Torvalds .file_open = nfs_open, 6441da177e4SLinus Torvalds .file_release = nfs_release, 6451da177e4SLinus Torvalds .lock = nfs_proc_lock, 6461da177e4SLinus Torvalds }; 647