nfs_nfsdport.c revision 224778
1191783Srmacklem/*- 2191783Srmacklem * Copyright (c) 1989, 1993 3191783Srmacklem * The Regents of the University of California. All rights reserved. 4191783Srmacklem * 5191783Srmacklem * This code is derived from software contributed to Berkeley by 6191783Srmacklem * Rick Macklem at The University of Guelph. 7191783Srmacklem * 8191783Srmacklem * Redistribution and use in source and binary forms, with or without 9191783Srmacklem * modification, are permitted provided that the following conditions 10191783Srmacklem * are met: 11191783Srmacklem * 1. Redistributions of source code must retain the above copyright 12191783Srmacklem * notice, this list of conditions and the following disclaimer. 13191783Srmacklem * 2. Redistributions in binary form must reproduce the above copyright 14191783Srmacklem * notice, this list of conditions and the following disclaimer in the 15191783Srmacklem * documentation and/or other materials provided with the distribution. 16191783Srmacklem * 4. Neither the name of the University nor the names of its contributors 17191783Srmacklem * may be used to endorse or promote products derived from this software 18191783Srmacklem * without specific prior written permission. 19191783Srmacklem * 20191783Srmacklem * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21191783Srmacklem * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22191783Srmacklem * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23191783Srmacklem * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24191783Srmacklem * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25191783Srmacklem * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26191783Srmacklem * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27191783Srmacklem * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28191783Srmacklem * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29191783Srmacklem * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30191783Srmacklem * SUCH DAMAGE. 31191783Srmacklem * 32191783Srmacklem */ 33191783Srmacklem 34191783Srmacklem#include <sys/cdefs.h> 35191783Srmacklem__FBSDID("$FreeBSD: head/sys/fs/nfsserver/nfs_nfsdport.c 224778 2011-08-11 12:30:23Z rwatson $"); 36191783Srmacklem 37224778Srwatson#include <sys/capability.h> 38224778Srwatson 39191783Srmacklem/* 40191783Srmacklem * Functions that perform the vfs operations required by the routines in 41191783Srmacklem * nfsd_serv.c. It is hoped that this change will make the server more 42191783Srmacklem * portable. 43191783Srmacklem */ 44191783Srmacklem 45191783Srmacklem#include <fs/nfs/nfsport.h> 46214255Srmacklem#include <sys/hash.h> 47191783Srmacklem#include <sys/sysctl.h> 48192503Srmacklem#include <nlm/nlm_prot.h> 49192503Srmacklem#include <nlm/nlm.h> 50191783Srmacklem 51219028SnetchildFEATURE(nfsd, "NFSv4 server"); 52219028Snetchild 53191783Srmacklemextern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1; 54191783Srmacklemextern int nfsrv_useacl; 55191783Srmacklemextern int newnfs_numnfsd; 56191783Srmacklemextern struct mount nfsv4root_mnt; 57191783Srmacklemextern struct nfsrv_stablefirst nfsrv_stablefirst; 58191783Srmacklemextern void (*nfsd_call_servertimer)(void); 59220530Srmacklemextern SVCPOOL *nfsrvd_pool; 60191783Srmacklemstruct vfsoptlist nfsv4root_opt, nfsv4root_newopt; 61191783SrmacklemNFSDLOCKMUTEX; 62191783Srmacklemstruct mtx nfs_cache_mutex; 63191783Srmacklemstruct mtx nfs_v4root_mutex; 64191783Srmacklemstruct nfsrvfh nfs_rootfh, nfs_pubfh; 65191783Srmacklemint nfs_pubfhset = 0, nfs_rootfhset = 0; 66217432Srmacklemstruct proc *nfsd_master_proc = NULL; 67217432Srmacklemstatic pid_t nfsd_master_pid = (pid_t)-1; 68217432Srmacklemstatic char nfsd_master_comm[MAXCOMLEN + 1]; 69217432Srmacklemstatic struct timeval nfsd_master_start; 70192503Srmacklemstatic uint32_t nfsv4_sysid = 0; 71191783Srmacklem 72192255Srmacklemstatic int nfssvc_srvcall(struct thread *, struct nfssvc_args *, 73192255Srmacklem struct ucred *); 74191783Srmacklem 75220645Srmacklemint nfsrv_enable_crossmntpt = 1; 76191783Srmacklemstatic int nfs_commit_blks; 77191783Srmacklemstatic int nfs_commit_miss; 78191783Srmacklemextern int nfsrv_issuedelegs; 79192255Srmacklemextern int nfsrv_dolocallocks; 80192255Srmacklem 81221615SrmacklemSYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW, 0, "New NFS server"); 82221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, mirrormnt, CTLFLAG_RW, 83220645Srmacklem &nfsrv_enable_crossmntpt, 0, "Enable nfsd to cross mount points"); 84221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 85192255Srmacklem 0, ""); 86221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 87192255Srmacklem 0, ""); 88221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, issue_delegations, CTLFLAG_RW, 89192255Srmacklem &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); 90221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_locallocks, CTLFLAG_RW, 91192255Srmacklem &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files"); 92191783Srmacklem 93191783Srmacklem#define NUM_HEURISTIC 1017 94191783Srmacklem#define NHUSE_INIT 64 95191783Srmacklem#define NHUSE_INC 16 96191783Srmacklem#define NHUSE_MAX 2048 97191783Srmacklem 98191783Srmacklemstatic struct nfsheur { 99191783Srmacklem struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 100191783Srmacklem off_t nh_nextr; /* next offset for sequential detection */ 101191783Srmacklem int nh_use; /* use count for selection */ 102191783Srmacklem int nh_seqcount; /* heuristic */ 103191783Srmacklem} nfsheur[NUM_HEURISTIC]; 104191783Srmacklem 105191783Srmacklem 106191783Srmacklem/* 107191783Srmacklem * Get attributes into nfsvattr structure. 108191783Srmacklem */ 109191783Srmacklemint 110191783Srmacklemnfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 111216693Srmacklem struct thread *p, int vpislocked) 112191783Srmacklem{ 113191783Srmacklem int error, lockedit = 0; 114191783Srmacklem 115216693Srmacklem if (vpislocked == 0) { 116216693Srmacklem /* 117216693Srmacklem * When vpislocked == 0, the vnode is either exclusively 118216693Srmacklem * locked by this thread or not locked by this thread. 119216693Srmacklem * As such, shared lock it, if not exclusively locked. 120216693Srmacklem */ 121224083Szack if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { 122216693Srmacklem lockedit = 1; 123224081Szack NFSVOPLOCK(vp, LK_SHARED | LK_RETRY); 124216693Srmacklem } 125191783Srmacklem } 126191783Srmacklem error = VOP_GETATTR(vp, &nvap->na_vattr, cred); 127216693Srmacklem if (lockedit != 0) 128224082Szack NFSVOPUNLOCK(vp, 0); 129224086Szack 130224086Szack NFSEXITCODE(error); 131191783Srmacklem return (error); 132191783Srmacklem} 133191783Srmacklem 134191783Srmacklem/* 135191783Srmacklem * Get a file handle for a vnode. 136191783Srmacklem */ 137191783Srmacklemint 138191783Srmacklemnfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 139191783Srmacklem{ 140191783Srmacklem int error; 141191783Srmacklem 142191783Srmacklem NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 143191783Srmacklem fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 144191783Srmacklem error = VOP_VPTOFH(vp, &fhp->fh_fid); 145224086Szack 146224086Szack NFSEXITCODE(error); 147191783Srmacklem return (error); 148191783Srmacklem} 149191783Srmacklem 150191783Srmacklem/* 151191783Srmacklem * Perform access checking for vnodes obtained from file handles that would 152191783Srmacklem * refer to files already opened by a Unix client. You cannot just use 153200999Srmacklem * vn_writechk() and VOP_ACCESSX() for two reasons. 154200999Srmacklem * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write 155200999Srmacklem * case. 156191783Srmacklem * 2 - The owner is to be given access irrespective of mode bits for some 157191783Srmacklem * operations, so that processes that chmod after opening a file don't 158191783Srmacklem * break. 159191783Srmacklem */ 160191783Srmacklemint 161200999Srmacklemnfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred, 162200999Srmacklem struct nfsexstuff *exp, struct thread *p, int override, int vpislocked, 163200999Srmacklem u_int32_t *supportedtypep) 164191783Srmacklem{ 165191783Srmacklem struct vattr vattr; 166191783Srmacklem int error = 0, getret = 0; 167191783Srmacklem 168216893Srmacklem if (vpislocked == 0) { 169224086Szack if (NFSVOPLOCK(vp, LK_SHARED) != 0) { 170224086Szack error = EPERM; 171224086Szack goto out; 172224086Szack } 173216893Srmacklem } 174191783Srmacklem if (accmode & VWRITE) { 175191783Srmacklem /* Just vn_writechk() changed to check rdonly */ 176191783Srmacklem /* 177191783Srmacklem * Disallow write attempts on read-only file systems; 178191783Srmacklem * unless the file is a socket or a block or character 179191783Srmacklem * device resident on the file system. 180191783Srmacklem */ 181191783Srmacklem if (NFSVNO_EXRDONLY(exp) || 182200999Srmacklem (vp->v_mount->mnt_flag & MNT_RDONLY)) { 183191783Srmacklem switch (vp->v_type) { 184191783Srmacklem case VREG: 185191783Srmacklem case VDIR: 186191783Srmacklem case VLNK: 187216893Srmacklem error = EROFS; 188191783Srmacklem default: 189191783Srmacklem break; 190191783Srmacklem } 191191783Srmacklem } 192191783Srmacklem /* 193191783Srmacklem * If there's shared text associated with 194191783Srmacklem * the inode, try to free it up once. If 195191783Srmacklem * we fail, we can't allow writing. 196191783Srmacklem */ 197216893Srmacklem if ((vp->v_vflag & VV_TEXT) != 0 && error == 0) 198216893Srmacklem error = ETXTBSY; 199191783Srmacklem } 200216893Srmacklem if (error != 0) { 201216893Srmacklem if (vpislocked == 0) 202224082Szack NFSVOPUNLOCK(vp, 0); 203224086Szack goto out; 204216893Srmacklem } 205191783Srmacklem 206191783Srmacklem /* 207191783Srmacklem * Should the override still be applied when ACLs are enabled? 208191783Srmacklem */ 209200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 210200999Srmacklem if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) { 211200999Srmacklem /* 212200999Srmacklem * Try again with VEXPLICIT_DENY, to see if the test for 213200999Srmacklem * deletion is supported. 214200999Srmacklem */ 215200999Srmacklem error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p); 216200999Srmacklem if (error == 0) { 217200999Srmacklem if (vp->v_type == VDIR) { 218200999Srmacklem accmode &= ~(VDELETE | VDELETE_CHILD); 219200999Srmacklem accmode |= VWRITE; 220200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 221200999Srmacklem } else if (supportedtypep != NULL) { 222200999Srmacklem *supportedtypep &= ~NFSACCESS_DELETE; 223200999Srmacklem } 224200999Srmacklem } 225200999Srmacklem } 226191783Srmacklem 227191783Srmacklem /* 228191783Srmacklem * Allow certain operations for the owner (reads and writes 229191783Srmacklem * on files that are already open). 230191783Srmacklem */ 231191783Srmacklem if (override != NFSACCCHK_NOOVERRIDE && 232191783Srmacklem (error == EPERM || error == EACCES)) { 233191783Srmacklem if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 234191783Srmacklem error = 0; 235191783Srmacklem else if (override & NFSACCCHK_ALLOWOWNER) { 236191783Srmacklem getret = VOP_GETATTR(vp, &vattr, cred); 237191783Srmacklem if (getret == 0 && cred->cr_uid == vattr.va_uid) 238191783Srmacklem error = 0; 239191783Srmacklem } 240191783Srmacklem } 241191783Srmacklem if (vpislocked == 0) 242224082Szack NFSVOPUNLOCK(vp, 0); 243224086Szack 244224086Szackout: 245224086Szack NFSEXITCODE(error); 246191783Srmacklem return (error); 247191783Srmacklem} 248191783Srmacklem 249191783Srmacklem/* 250191783Srmacklem * Set attribute(s) vnop. 251191783Srmacklem */ 252191783Srmacklemint 253191783Srmacklemnfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 254191783Srmacklem struct thread *p, struct nfsexstuff *exp) 255191783Srmacklem{ 256191783Srmacklem int error; 257191783Srmacklem 258191783Srmacklem error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 259224086Szack NFSEXITCODE(error); 260191783Srmacklem return (error); 261191783Srmacklem} 262191783Srmacklem 263191783Srmacklem/* 264191783Srmacklem * Set up nameidata for a lookup() call and do it 265191783Srmacklem * For the cases where we are crossing mount points 266191783Srmacklem * (looking up the public fh path or the v4 root path when 267191783Srmacklem * not using a pseudo-root fs), set/release the Giant lock, 268191783Srmacklem * as required. 269191783Srmacklem */ 270191783Srmacklemint 271191783Srmacklemnfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 272191783Srmacklem struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p, 273191783Srmacklem struct vnode **retdirp) 274191783Srmacklem{ 275191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 276191783Srmacklem int i; 277191783Srmacklem struct iovec aiov; 278191783Srmacklem struct uio auio; 279191783Srmacklem int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 280191783Srmacklem int error = 0, crossmnt; 281191783Srmacklem char *cp; 282191783Srmacklem 283191783Srmacklem *retdirp = NULL; 284191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 285191783Srmacklem /* 286191783Srmacklem * Extract and set starting directory. 287191783Srmacklem */ 288191783Srmacklem if (dp->v_type != VDIR) { 289191783Srmacklem if (islocked) 290191783Srmacklem vput(dp); 291191783Srmacklem else 292191783Srmacklem vrele(dp); 293191783Srmacklem nfsvno_relpathbuf(ndp); 294224086Szack error = ENOTDIR; 295224086Szack goto out1; 296191783Srmacklem } 297191783Srmacklem if (islocked) 298224080Szack NFSVOPUNLOCK(dp, 0); 299191783Srmacklem VREF(dp); 300191783Srmacklem *retdirp = dp; 301191783Srmacklem if (NFSVNO_EXRDONLY(exp)) 302191783Srmacklem cnp->cn_flags |= RDONLY; 303191783Srmacklem ndp->ni_segflg = UIO_SYSSPACE; 304191783Srmacklem crossmnt = 1; 305191783Srmacklem 306191783Srmacklem if (nd->nd_flag & ND_PUBLOOKUP) { 307191783Srmacklem ndp->ni_loopcnt = 0; 308191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 309191783Srmacklem vrele(dp); 310191783Srmacklem /* 311191783Srmacklem * Check for degenerate pathnames here, since lookup() 312191783Srmacklem * panics on them. 313191783Srmacklem */ 314191783Srmacklem for (i = 1; i < ndp->ni_pathlen; i++) 315191783Srmacklem if (cnp->cn_pnbuf[i] != '/') 316191783Srmacklem break; 317191783Srmacklem if (i == ndp->ni_pathlen) { 318191783Srmacklem error = NFSERR_ACCES; 319191783Srmacklem goto out; 320191783Srmacklem } 321191783Srmacklem dp = rootvnode; 322191783Srmacklem VREF(dp); 323191783Srmacklem } 324220645Srmacklem } else if ((nfsrv_enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 325191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) { 326191783Srmacklem /* 327191783Srmacklem * Only cross mount points for NFSv4 when doing a 328191783Srmacklem * mount while traversing the file system above 329220645Srmacklem * the mount point, unless nfsrv_enable_crossmntpt is set. 330191783Srmacklem */ 331191783Srmacklem cnp->cn_flags |= NOCROSSMOUNT; 332191783Srmacklem crossmnt = 0; 333191783Srmacklem } 334191783Srmacklem 335191783Srmacklem /* 336191783Srmacklem * Initialize for scan, set ni_startdir and bump ref on dp again 337191783Srmacklem * becuase lookup() will dereference ni_startdir. 338191783Srmacklem */ 339191783Srmacklem 340191783Srmacklem cnp->cn_thread = p; 341191783Srmacklem ndp->ni_startdir = dp; 342191783Srmacklem ndp->ni_rootdir = rootvnode; 343191783Srmacklem 344191783Srmacklem if (!lockleaf) 345191783Srmacklem cnp->cn_flags |= LOCKLEAF; 346191783Srmacklem for (;;) { 347191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 348191783Srmacklem /* 349191783Srmacklem * Call lookup() to do the real work. If an error occurs, 350191783Srmacklem * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 351191783Srmacklem * we do not have to dereference anything before returning. 352191783Srmacklem * In either case ni_startdir will be dereferenced and NULLed 353191783Srmacklem * out. 354191783Srmacklem */ 355191783Srmacklem error = lookup(ndp); 356191783Srmacklem if (error) 357191783Srmacklem break; 358191783Srmacklem 359191783Srmacklem /* 360191783Srmacklem * Check for encountering a symbolic link. Trivial 361191783Srmacklem * termination occurs if no symlink encountered. 362191783Srmacklem */ 363191783Srmacklem if ((cnp->cn_flags & ISSYMLINK) == 0) { 364191783Srmacklem if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0) 365191783Srmacklem nfsvno_relpathbuf(ndp); 366191783Srmacklem if (ndp->ni_vp && !lockleaf) 367224080Szack NFSVOPUNLOCK(ndp->ni_vp, 0); 368191783Srmacklem break; 369191783Srmacklem } 370191783Srmacklem 371191783Srmacklem /* 372191783Srmacklem * Validate symlink 373191783Srmacklem */ 374191783Srmacklem if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 375224080Szack NFSVOPUNLOCK(ndp->ni_dvp, 0); 376191783Srmacklem if (!(nd->nd_flag & ND_PUBLOOKUP)) { 377191783Srmacklem error = EINVAL; 378191783Srmacklem goto badlink2; 379191783Srmacklem } 380191783Srmacklem 381191783Srmacklem if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 382191783Srmacklem error = ELOOP; 383191783Srmacklem goto badlink2; 384191783Srmacklem } 385191783Srmacklem if (ndp->ni_pathlen > 1) 386191783Srmacklem cp = uma_zalloc(namei_zone, M_WAITOK); 387191783Srmacklem else 388191783Srmacklem cp = cnp->cn_pnbuf; 389191783Srmacklem aiov.iov_base = cp; 390191783Srmacklem aiov.iov_len = MAXPATHLEN; 391191783Srmacklem auio.uio_iov = &aiov; 392191783Srmacklem auio.uio_iovcnt = 1; 393191783Srmacklem auio.uio_offset = 0; 394191783Srmacklem auio.uio_rw = UIO_READ; 395191783Srmacklem auio.uio_segflg = UIO_SYSSPACE; 396191783Srmacklem auio.uio_td = NULL; 397191783Srmacklem auio.uio_resid = MAXPATHLEN; 398191783Srmacklem error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 399191783Srmacklem if (error) { 400191783Srmacklem badlink1: 401191783Srmacklem if (ndp->ni_pathlen > 1) 402191783Srmacklem uma_zfree(namei_zone, cp); 403191783Srmacklem badlink2: 404191783Srmacklem vrele(ndp->ni_dvp); 405191783Srmacklem vput(ndp->ni_vp); 406191783Srmacklem break; 407191783Srmacklem } 408191783Srmacklem linklen = MAXPATHLEN - auio.uio_resid; 409191783Srmacklem if (linklen == 0) { 410191783Srmacklem error = ENOENT; 411191783Srmacklem goto badlink1; 412191783Srmacklem } 413191783Srmacklem if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 414191783Srmacklem error = ENAMETOOLONG; 415191783Srmacklem goto badlink1; 416191783Srmacklem } 417191783Srmacklem 418191783Srmacklem /* 419191783Srmacklem * Adjust or replace path 420191783Srmacklem */ 421191783Srmacklem if (ndp->ni_pathlen > 1) { 422191783Srmacklem NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 423191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 424191783Srmacklem cnp->cn_pnbuf = cp; 425191783Srmacklem } else 426191783Srmacklem cnp->cn_pnbuf[linklen] = '\0'; 427191783Srmacklem ndp->ni_pathlen += linklen; 428191783Srmacklem 429191783Srmacklem /* 430191783Srmacklem * Cleanup refs for next loop and check if root directory 431191783Srmacklem * should replace current directory. Normally ni_dvp 432191783Srmacklem * becomes the new base directory and is cleaned up when 433191783Srmacklem * we loop. Explicitly null pointers after invalidation 434191783Srmacklem * to clarify operation. 435191783Srmacklem */ 436191783Srmacklem vput(ndp->ni_vp); 437191783Srmacklem ndp->ni_vp = NULL; 438191783Srmacklem 439191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 440191783Srmacklem vrele(ndp->ni_dvp); 441191783Srmacklem ndp->ni_dvp = ndp->ni_rootdir; 442191783Srmacklem VREF(ndp->ni_dvp); 443191783Srmacklem } 444191783Srmacklem ndp->ni_startdir = ndp->ni_dvp; 445191783Srmacklem ndp->ni_dvp = NULL; 446191783Srmacklem } 447191783Srmacklem if (!lockleaf) 448191783Srmacklem cnp->cn_flags &= ~LOCKLEAF; 449191783Srmacklem 450191783Srmacklemout: 451191783Srmacklem if (error) { 452191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 453191783Srmacklem ndp->ni_vp = NULL; 454191783Srmacklem ndp->ni_dvp = NULL; 455191783Srmacklem ndp->ni_startdir = NULL; 456191783Srmacklem cnp->cn_flags &= ~HASBUF; 457191783Srmacklem } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 458191783Srmacklem ndp->ni_dvp = NULL; 459191783Srmacklem } 460224086Szack 461224086Szackout1: 462224086Szack NFSEXITCODE2(error, nd); 463191783Srmacklem return (error); 464191783Srmacklem} 465191783Srmacklem 466191783Srmacklem/* 467191783Srmacklem * Set up a pathname buffer and return a pointer to it and, optionally 468191783Srmacklem * set a hash pointer. 469191783Srmacklem */ 470191783Srmacklemvoid 471191783Srmacklemnfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 472191783Srmacklem{ 473191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 474191783Srmacklem 475191783Srmacklem cnp->cn_flags |= (NOMACCHECK | HASBUF); 476191783Srmacklem cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 477191783Srmacklem if (hashpp != NULL) 478191783Srmacklem *hashpp = NULL; 479191783Srmacklem *bufpp = cnp->cn_pnbuf; 480191783Srmacklem} 481191783Srmacklem 482191783Srmacklem/* 483191783Srmacklem * Release the above path buffer, if not released by nfsvno_namei(). 484191783Srmacklem */ 485191783Srmacklemvoid 486191783Srmacklemnfsvno_relpathbuf(struct nameidata *ndp) 487191783Srmacklem{ 488191783Srmacklem 489191783Srmacklem if ((ndp->ni_cnd.cn_flags & HASBUF) == 0) 490191783Srmacklem panic("nfsrelpath"); 491191783Srmacklem uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 492191783Srmacklem ndp->ni_cnd.cn_flags &= ~HASBUF; 493191783Srmacklem} 494191783Srmacklem 495191783Srmacklem/* 496191783Srmacklem * Readlink vnode op into an mbuf list. 497191783Srmacklem */ 498191783Srmacklemint 499191783Srmacklemnfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p, 500191783Srmacklem struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 501191783Srmacklem{ 502191783Srmacklem struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; 503191783Srmacklem struct iovec *ivp = iv; 504191783Srmacklem struct uio io, *uiop = &io; 505191783Srmacklem struct mbuf *mp, *mp2 = NULL, *mp3 = NULL; 506224086Szack int i, len, tlen, error = 0; 507191783Srmacklem 508191783Srmacklem len = 0; 509191783Srmacklem i = 0; 510191783Srmacklem while (len < NFS_MAXPATHLEN) { 511191783Srmacklem NFSMGET(mp); 512191783Srmacklem MCLGET(mp, M_WAIT); 513191783Srmacklem mp->m_len = NFSMSIZ(mp); 514191783Srmacklem if (len == 0) { 515191783Srmacklem mp3 = mp2 = mp; 516191783Srmacklem } else { 517191783Srmacklem mp2->m_next = mp; 518191783Srmacklem mp2 = mp; 519191783Srmacklem } 520191783Srmacklem if ((len + mp->m_len) > NFS_MAXPATHLEN) { 521191783Srmacklem mp->m_len = NFS_MAXPATHLEN - len; 522191783Srmacklem len = NFS_MAXPATHLEN; 523191783Srmacklem } else { 524191783Srmacklem len += mp->m_len; 525191783Srmacklem } 526191783Srmacklem ivp->iov_base = mtod(mp, caddr_t); 527191783Srmacklem ivp->iov_len = mp->m_len; 528191783Srmacklem i++; 529191783Srmacklem ivp++; 530191783Srmacklem } 531191783Srmacklem uiop->uio_iov = iv; 532191783Srmacklem uiop->uio_iovcnt = i; 533191783Srmacklem uiop->uio_offset = 0; 534191783Srmacklem uiop->uio_resid = len; 535191783Srmacklem uiop->uio_rw = UIO_READ; 536191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 537191783Srmacklem uiop->uio_td = NULL; 538191783Srmacklem error = VOP_READLINK(vp, uiop, cred); 539191783Srmacklem if (error) { 540191783Srmacklem m_freem(mp3); 541191783Srmacklem *lenp = 0; 542224086Szack goto out; 543191783Srmacklem } 544191783Srmacklem if (uiop->uio_resid > 0) { 545191783Srmacklem len -= uiop->uio_resid; 546191783Srmacklem tlen = NFSM_RNDUP(len); 547191783Srmacklem nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len); 548191783Srmacklem } 549191783Srmacklem *lenp = len; 550191783Srmacklem *mpp = mp3; 551191783Srmacklem *mpendp = mp; 552224086Szack 553224086Szackout: 554224086Szack NFSEXITCODE(error); 555224086Szack return (error); 556191783Srmacklem} 557191783Srmacklem 558191783Srmacklem/* 559191783Srmacklem * Read vnode op call into mbuf list. 560191783Srmacklem */ 561191783Srmacklemint 562191783Srmacklemnfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 563191783Srmacklem struct thread *p, struct mbuf **mpp, struct mbuf **mpendp) 564191783Srmacklem{ 565191783Srmacklem struct mbuf *m; 566191783Srmacklem int i; 567191783Srmacklem struct iovec *iv; 568191783Srmacklem struct iovec *iv2; 569191783Srmacklem int error = 0, len, left, siz, tlen, ioflag = 0, hi, try = 32; 570191783Srmacklem struct mbuf *m2 = NULL, *m3; 571191783Srmacklem struct uio io, *uiop = &io; 572191783Srmacklem struct nfsheur *nh; 573191783Srmacklem 574191783Srmacklem /* 575191783Srmacklem * Calculate seqcount for heuristic 576191783Srmacklem */ 577191783Srmacklem /* 578191783Srmacklem * Locate best candidate 579191783Srmacklem */ 580191783Srmacklem 581191783Srmacklem hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 582191783Srmacklem nh = &nfsheur[hi]; 583191783Srmacklem 584191783Srmacklem while (try--) { 585191783Srmacklem if (nfsheur[hi].nh_vp == vp) { 586191783Srmacklem nh = &nfsheur[hi]; 587191783Srmacklem break; 588191783Srmacklem } 589191783Srmacklem if (nfsheur[hi].nh_use > 0) 590191783Srmacklem --nfsheur[hi].nh_use; 591191783Srmacklem hi = (hi + 1) % NUM_HEURISTIC; 592191783Srmacklem if (nfsheur[hi].nh_use < nh->nh_use) 593191783Srmacklem nh = &nfsheur[hi]; 594191783Srmacklem } 595191783Srmacklem 596191783Srmacklem if (nh->nh_vp != vp) { 597191783Srmacklem nh->nh_vp = vp; 598191783Srmacklem nh->nh_nextr = off; 599191783Srmacklem nh->nh_use = NHUSE_INIT; 600191783Srmacklem if (off == 0) 601191783Srmacklem nh->nh_seqcount = 4; 602191783Srmacklem else 603191783Srmacklem nh->nh_seqcount = 1; 604191783Srmacklem } 605191783Srmacklem 606191783Srmacklem /* 607191783Srmacklem * Calculate heuristic 608191783Srmacklem */ 609191783Srmacklem 610191783Srmacklem if ((off == 0 && nh->nh_seqcount > 0) || off == nh->nh_nextr) { 611191783Srmacklem if (++nh->nh_seqcount > IO_SEQMAX) 612191783Srmacklem nh->nh_seqcount = IO_SEQMAX; 613191783Srmacklem } else if (nh->nh_seqcount > 1) { 614191783Srmacklem nh->nh_seqcount = 1; 615191783Srmacklem } else { 616191783Srmacklem nh->nh_seqcount = 0; 617191783Srmacklem } 618191783Srmacklem nh->nh_use += NHUSE_INC; 619191783Srmacklem if (nh->nh_use > NHUSE_MAX) 620191783Srmacklem nh->nh_use = NHUSE_MAX; 621191783Srmacklem ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 622191783Srmacklem 623191783Srmacklem len = left = NFSM_RNDUP(cnt); 624191783Srmacklem m3 = NULL; 625191783Srmacklem /* 626191783Srmacklem * Generate the mbuf list with the uio_iov ref. to it. 627191783Srmacklem */ 628191783Srmacklem i = 0; 629191783Srmacklem while (left > 0) { 630191783Srmacklem NFSMGET(m); 631191783Srmacklem MCLGET(m, M_WAIT); 632191783Srmacklem m->m_len = 0; 633191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 634191783Srmacklem left -= siz; 635191783Srmacklem i++; 636191783Srmacklem if (m3) 637191783Srmacklem m2->m_next = m; 638191783Srmacklem else 639191783Srmacklem m3 = m; 640191783Srmacklem m2 = m; 641191783Srmacklem } 642191783Srmacklem MALLOC(iv, struct iovec *, i * sizeof (struct iovec), 643191783Srmacklem M_TEMP, M_WAITOK); 644191783Srmacklem uiop->uio_iov = iv2 = iv; 645191783Srmacklem m = m3; 646191783Srmacklem left = len; 647191783Srmacklem i = 0; 648191783Srmacklem while (left > 0) { 649191783Srmacklem if (m == NULL) 650191783Srmacklem panic("nfsvno_read iov"); 651191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 652191783Srmacklem if (siz > 0) { 653191783Srmacklem iv->iov_base = mtod(m, caddr_t) + m->m_len; 654191783Srmacklem iv->iov_len = siz; 655191783Srmacklem m->m_len += siz; 656191783Srmacklem left -= siz; 657191783Srmacklem iv++; 658191783Srmacklem i++; 659191783Srmacklem } 660191783Srmacklem m = m->m_next; 661191783Srmacklem } 662191783Srmacklem uiop->uio_iovcnt = i; 663191783Srmacklem uiop->uio_offset = off; 664191783Srmacklem uiop->uio_resid = len; 665191783Srmacklem uiop->uio_rw = UIO_READ; 666191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 667191783Srmacklem error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 668191783Srmacklem FREE((caddr_t)iv2, M_TEMP); 669191783Srmacklem if (error) { 670191783Srmacklem m_freem(m3); 671191783Srmacklem *mpp = NULL; 672224086Szack goto out; 673191783Srmacklem } 674191783Srmacklem tlen = len - uiop->uio_resid; 675191783Srmacklem cnt = cnt < tlen ? cnt : tlen; 676191783Srmacklem tlen = NFSM_RNDUP(cnt); 677191783Srmacklem if (tlen == 0) { 678191783Srmacklem m_freem(m3); 679191783Srmacklem m3 = NULL; 680191783Srmacklem } else if (len != tlen || tlen != cnt) 681191783Srmacklem nfsrv_adj(m3, len - tlen, tlen - cnt); 682191783Srmacklem *mpp = m3; 683191783Srmacklem *mpendp = m2; 684224086Szack 685224086Szackout: 686224086Szack NFSEXITCODE(error); 687224086Szack return (error); 688191783Srmacklem} 689191783Srmacklem 690191783Srmacklem/* 691191783Srmacklem * Write vnode op from an mbuf list. 692191783Srmacklem */ 693191783Srmacklemint 694191783Srmacklemnfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable, 695191783Srmacklem struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 696191783Srmacklem{ 697191783Srmacklem struct iovec *ivp; 698191783Srmacklem int i, len; 699191783Srmacklem struct iovec *iv; 700191783Srmacklem int ioflags, error; 701191783Srmacklem struct uio io, *uiop = &io; 702191783Srmacklem 703191783Srmacklem MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP, 704191783Srmacklem M_WAITOK); 705191783Srmacklem uiop->uio_iov = iv = ivp; 706191783Srmacklem uiop->uio_iovcnt = cnt; 707191783Srmacklem i = mtod(mp, caddr_t) + mp->m_len - cp; 708191783Srmacklem len = retlen; 709191783Srmacklem while (len > 0) { 710191783Srmacklem if (mp == NULL) 711191783Srmacklem panic("nfsvno_write"); 712191783Srmacklem if (i > 0) { 713191783Srmacklem i = min(i, len); 714191783Srmacklem ivp->iov_base = cp; 715191783Srmacklem ivp->iov_len = i; 716191783Srmacklem ivp++; 717191783Srmacklem len -= i; 718191783Srmacklem } 719191783Srmacklem mp = mp->m_next; 720191783Srmacklem if (mp) { 721191783Srmacklem i = mp->m_len; 722191783Srmacklem cp = mtod(mp, caddr_t); 723191783Srmacklem } 724191783Srmacklem } 725191783Srmacklem 726191783Srmacklem if (stable == NFSWRITE_UNSTABLE) 727191783Srmacklem ioflags = IO_NODELOCKED; 728191783Srmacklem else 729191783Srmacklem ioflags = (IO_SYNC | IO_NODELOCKED); 730191783Srmacklem uiop->uio_resid = retlen; 731191783Srmacklem uiop->uio_rw = UIO_WRITE; 732191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 733191783Srmacklem NFSUIOPROC(uiop, p); 734191783Srmacklem uiop->uio_offset = off; 735191783Srmacklem error = VOP_WRITE(vp, uiop, ioflags, cred); 736191783Srmacklem FREE((caddr_t)iv, M_TEMP); 737224086Szack 738224086Szack NFSEXITCODE(error); 739191783Srmacklem return (error); 740191783Srmacklem} 741191783Srmacklem 742191783Srmacklem/* 743191783Srmacklem * Common code for creating a regular file (plus special files for V2). 744191783Srmacklem */ 745191783Srmacklemint 746191783Srmacklemnfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 747191783Srmacklem struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 748199616Srmacklem int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp) 749191783Srmacklem{ 750191783Srmacklem u_quad_t tempsize; 751191783Srmacklem int error; 752191783Srmacklem 753191783Srmacklem error = nd->nd_repstat; 754191783Srmacklem if (!error && ndp->ni_vp == NULL) { 755191783Srmacklem if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 756191783Srmacklem vrele(ndp->ni_startdir); 757191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, 758191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 759191783Srmacklem vput(ndp->ni_dvp); 760191783Srmacklem nfsvno_relpathbuf(ndp); 761191783Srmacklem if (!error) { 762191783Srmacklem if (*exclusive_flagp) { 763191783Srmacklem *exclusive_flagp = 0; 764191783Srmacklem NFSVNO_ATTRINIT(nvap); 765199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 766199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 767191783Srmacklem error = VOP_SETATTR(ndp->ni_vp, 768191783Srmacklem &nvap->na_vattr, nd->nd_cred); 769191783Srmacklem } 770191783Srmacklem } 771191783Srmacklem /* 772191783Srmacklem * NFS V2 Only. nfsrvd_mknod() does this for V3. 773191783Srmacklem * (This implies, just get out on an error.) 774191783Srmacklem */ 775191783Srmacklem } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 776191783Srmacklem nvap->na_type == VFIFO) { 777191783Srmacklem if (nvap->na_type == VCHR && rdev == 0xffffffff) 778191783Srmacklem nvap->na_type = VFIFO; 779191783Srmacklem if (nvap->na_type != VFIFO && 780191783Srmacklem (error = priv_check_cred(nd->nd_cred, 781191783Srmacklem PRIV_VFS_MKNOD_DEV, 0))) { 782191783Srmacklem vrele(ndp->ni_startdir); 783191783Srmacklem nfsvno_relpathbuf(ndp); 784191783Srmacklem vput(ndp->ni_dvp); 785224086Szack goto out; 786191783Srmacklem } 787191783Srmacklem nvap->na_rdev = rdev; 788191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 789191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 790191783Srmacklem vput(ndp->ni_dvp); 791191783Srmacklem nfsvno_relpathbuf(ndp); 792220546Srmacklem vrele(ndp->ni_startdir); 793220546Srmacklem if (error) 794224086Szack goto out; 795191783Srmacklem } else { 796191783Srmacklem vrele(ndp->ni_startdir); 797191783Srmacklem nfsvno_relpathbuf(ndp); 798191783Srmacklem vput(ndp->ni_dvp); 799224086Szack error = ENXIO; 800224086Szack goto out; 801191783Srmacklem } 802191783Srmacklem *vpp = ndp->ni_vp; 803191783Srmacklem } else { 804191783Srmacklem /* 805191783Srmacklem * Handle cases where error is already set and/or 806191783Srmacklem * the file exists. 807191783Srmacklem * 1 - clean up the lookup 808191783Srmacklem * 2 - iff !error and na_size set, truncate it 809191783Srmacklem */ 810191783Srmacklem vrele(ndp->ni_startdir); 811191783Srmacklem nfsvno_relpathbuf(ndp); 812191783Srmacklem *vpp = ndp->ni_vp; 813191783Srmacklem if (ndp->ni_dvp == *vpp) 814191783Srmacklem vrele(ndp->ni_dvp); 815191783Srmacklem else 816191783Srmacklem vput(ndp->ni_dvp); 817191783Srmacklem if (!error && nvap->na_size != VNOVAL) { 818200999Srmacklem error = nfsvno_accchk(*vpp, VWRITE, 819191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 820200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 821191783Srmacklem if (!error) { 822191783Srmacklem tempsize = nvap->na_size; 823191783Srmacklem NFSVNO_ATTRINIT(nvap); 824191783Srmacklem nvap->na_size = tempsize; 825191783Srmacklem error = VOP_SETATTR(*vpp, 826191783Srmacklem &nvap->na_vattr, nd->nd_cred); 827191783Srmacklem } 828191783Srmacklem } 829191783Srmacklem if (error) 830191783Srmacklem vput(*vpp); 831191783Srmacklem } 832224086Szack 833224086Szackout: 834224086Szack NFSEXITCODE(error); 835191783Srmacklem return (error); 836191783Srmacklem} 837191783Srmacklem 838191783Srmacklem/* 839191783Srmacklem * Do a mknod vnode op. 840191783Srmacklem */ 841191783Srmacklemint 842191783Srmacklemnfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, 843191783Srmacklem struct thread *p) 844191783Srmacklem{ 845191783Srmacklem int error = 0; 846191783Srmacklem enum vtype vtyp; 847191783Srmacklem 848191783Srmacklem vtyp = nvap->na_type; 849191783Srmacklem /* 850191783Srmacklem * Iff doesn't exist, create it. 851191783Srmacklem */ 852191783Srmacklem if (ndp->ni_vp) { 853191783Srmacklem vrele(ndp->ni_startdir); 854191783Srmacklem nfsvno_relpathbuf(ndp); 855191783Srmacklem vput(ndp->ni_dvp); 856191783Srmacklem vrele(ndp->ni_vp); 857224086Szack error = EEXIST; 858224086Szack goto out; 859191783Srmacklem } 860191783Srmacklem if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { 861191783Srmacklem vrele(ndp->ni_startdir); 862191783Srmacklem nfsvno_relpathbuf(ndp); 863191783Srmacklem vput(ndp->ni_dvp); 864224086Szack error = NFSERR_BADTYPE; 865224086Szack goto out; 866191783Srmacklem } 867191783Srmacklem if (vtyp == VSOCK) { 868191783Srmacklem vrele(ndp->ni_startdir); 869191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, 870191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 871191783Srmacklem vput(ndp->ni_dvp); 872191783Srmacklem nfsvno_relpathbuf(ndp); 873191783Srmacklem } else { 874191783Srmacklem if (nvap->na_type != VFIFO && 875191783Srmacklem (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) { 876191783Srmacklem vrele(ndp->ni_startdir); 877191783Srmacklem nfsvno_relpathbuf(ndp); 878191783Srmacklem vput(ndp->ni_dvp); 879224086Szack goto out; 880191783Srmacklem } 881191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 882191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 883191783Srmacklem vput(ndp->ni_dvp); 884191783Srmacklem nfsvno_relpathbuf(ndp); 885216898Srmacklem vrele(ndp->ni_startdir); 886191783Srmacklem /* 887191783Srmacklem * Since VOP_MKNOD returns the ni_vp, I can't 888191783Srmacklem * see any reason to do the lookup. 889191783Srmacklem */ 890191783Srmacklem } 891224086Szack 892224086Szackout: 893224086Szack NFSEXITCODE(error); 894191783Srmacklem return (error); 895191783Srmacklem} 896191783Srmacklem 897191783Srmacklem/* 898191783Srmacklem * Mkdir vnode op. 899191783Srmacklem */ 900191783Srmacklemint 901191783Srmacklemnfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, 902191783Srmacklem struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 903191783Srmacklem{ 904191783Srmacklem int error = 0; 905191783Srmacklem 906191783Srmacklem if (ndp->ni_vp != NULL) { 907191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 908191783Srmacklem vrele(ndp->ni_dvp); 909191783Srmacklem else 910191783Srmacklem vput(ndp->ni_dvp); 911191783Srmacklem vrele(ndp->ni_vp); 912206063Srmacklem nfsvno_relpathbuf(ndp); 913224086Szack error = EEXIST; 914224086Szack goto out; 915191783Srmacklem } 916191783Srmacklem error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 917191783Srmacklem &nvap->na_vattr); 918191783Srmacklem vput(ndp->ni_dvp); 919191783Srmacklem nfsvno_relpathbuf(ndp); 920224086Szack 921224086Szackout: 922224086Szack NFSEXITCODE(error); 923191783Srmacklem return (error); 924191783Srmacklem} 925191783Srmacklem 926191783Srmacklem/* 927191783Srmacklem * symlink vnode op. 928191783Srmacklem */ 929191783Srmacklemint 930191783Srmacklemnfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, 931191783Srmacklem int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, 932191783Srmacklem struct nfsexstuff *exp) 933191783Srmacklem{ 934191783Srmacklem int error = 0; 935191783Srmacklem 936191783Srmacklem if (ndp->ni_vp) { 937191783Srmacklem vrele(ndp->ni_startdir); 938191783Srmacklem nfsvno_relpathbuf(ndp); 939191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 940191783Srmacklem vrele(ndp->ni_dvp); 941191783Srmacklem else 942191783Srmacklem vput(ndp->ni_dvp); 943191783Srmacklem vrele(ndp->ni_vp); 944224086Szack error = EEXIST; 945224086Szack goto out; 946191783Srmacklem } 947191783Srmacklem 948191783Srmacklem error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 949191783Srmacklem &nvap->na_vattr, pathcp); 950191783Srmacklem vput(ndp->ni_dvp); 951191783Srmacklem vrele(ndp->ni_startdir); 952191783Srmacklem nfsvno_relpathbuf(ndp); 953191783Srmacklem /* 954191783Srmacklem * Although FreeBSD still had the lookup code in 955191783Srmacklem * it for 7/current, there doesn't seem to be any 956191783Srmacklem * point, since VOP_SYMLINK() returns the ni_vp. 957191783Srmacklem * Just vput it for v2. 958191783Srmacklem */ 959191783Srmacklem if (!not_v2 && !error) 960191783Srmacklem vput(ndp->ni_vp); 961224086Szack 962224086Szackout: 963224086Szack NFSEXITCODE(error); 964191783Srmacklem return (error); 965191783Srmacklem} 966191783Srmacklem 967191783Srmacklem/* 968191783Srmacklem * Parse symbolic link arguments. 969191783Srmacklem * This function has an ugly side effect. It will MALLOC() an area for 970191783Srmacklem * the symlink and set iov_base to point to it, only if it succeeds. 971191783Srmacklem * So, if it returns with uiop->uio_iov->iov_base != NULL, that must 972191783Srmacklem * be FREE'd later. 973191783Srmacklem */ 974191783Srmacklemint 975191783Srmacklemnfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, 976191783Srmacklem struct thread *p, char **pathcpp, int *lenp) 977191783Srmacklem{ 978191783Srmacklem u_int32_t *tl; 979191783Srmacklem char *pathcp = NULL; 980191783Srmacklem int error = 0, len; 981191783Srmacklem struct nfsv2_sattr *sp; 982191783Srmacklem 983191783Srmacklem *pathcpp = NULL; 984191783Srmacklem *lenp = 0; 985191783Srmacklem if ((nd->nd_flag & ND_NFSV3) && 986191783Srmacklem (error = nfsrv_sattr(nd, nvap, NULL, NULL, p))) 987191783Srmacklem goto nfsmout; 988191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 989191783Srmacklem len = fxdr_unsigned(int, *tl); 990191783Srmacklem if (len > NFS_MAXPATHLEN || len <= 0) { 991191783Srmacklem error = EBADRPC; 992191783Srmacklem goto nfsmout; 993191783Srmacklem } 994191783Srmacklem MALLOC(pathcp, caddr_t, len + 1, M_TEMP, M_WAITOK); 995191783Srmacklem error = nfsrv_mtostr(nd, pathcp, len); 996191783Srmacklem if (error) 997191783Srmacklem goto nfsmout; 998191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 999191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 1000191783Srmacklem nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); 1001191783Srmacklem } 1002191783Srmacklem *pathcpp = pathcp; 1003191783Srmacklem *lenp = len; 1004224086Szack NFSEXITCODE2(0, nd); 1005191783Srmacklem return (0); 1006191783Srmacklemnfsmout: 1007191783Srmacklem if (pathcp) 1008191783Srmacklem free(pathcp, M_TEMP); 1009224086Szack NFSEXITCODE2(error, nd); 1010191783Srmacklem return (error); 1011191783Srmacklem} 1012191783Srmacklem 1013191783Srmacklem/* 1014191783Srmacklem * Remove a non-directory object. 1015191783Srmacklem */ 1016191783Srmacklemint 1017191783Srmacklemnfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1018191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1019191783Srmacklem{ 1020191783Srmacklem struct vnode *vp; 1021191783Srmacklem int error = 0; 1022191783Srmacklem 1023191783Srmacklem vp = ndp->ni_vp; 1024191783Srmacklem if (vp->v_type == VDIR) 1025191783Srmacklem error = NFSERR_ISDIR; 1026191783Srmacklem else if (is_v4) 1027191783Srmacklem error = nfsrv_checkremove(vp, 1, p); 1028191783Srmacklem if (!error) 1029191783Srmacklem error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); 1030191783Srmacklem if (ndp->ni_dvp == vp) 1031191783Srmacklem vrele(ndp->ni_dvp); 1032191783Srmacklem else 1033191783Srmacklem vput(ndp->ni_dvp); 1034191783Srmacklem vput(vp); 1035224086Szack NFSEXITCODE(error); 1036191783Srmacklem return (error); 1037191783Srmacklem} 1038191783Srmacklem 1039191783Srmacklem/* 1040191783Srmacklem * Remove a directory. 1041191783Srmacklem */ 1042191783Srmacklemint 1043191783Srmacklemnfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1044191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1045191783Srmacklem{ 1046191783Srmacklem struct vnode *vp; 1047191783Srmacklem int error = 0; 1048191783Srmacklem 1049191783Srmacklem vp = ndp->ni_vp; 1050191783Srmacklem if (vp->v_type != VDIR) { 1051191783Srmacklem error = ENOTDIR; 1052191783Srmacklem goto out; 1053191783Srmacklem } 1054191783Srmacklem /* 1055191783Srmacklem * No rmdir "." please. 1056191783Srmacklem */ 1057191783Srmacklem if (ndp->ni_dvp == vp) { 1058191783Srmacklem error = EINVAL; 1059191783Srmacklem goto out; 1060191783Srmacklem } 1061191783Srmacklem /* 1062191783Srmacklem * The root of a mounted filesystem cannot be deleted. 1063191783Srmacklem */ 1064191783Srmacklem if (vp->v_vflag & VV_ROOT) 1065191783Srmacklem error = EBUSY; 1066191783Srmacklemout: 1067191783Srmacklem if (!error) 1068191783Srmacklem error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); 1069191783Srmacklem if (ndp->ni_dvp == vp) 1070191783Srmacklem vrele(ndp->ni_dvp); 1071191783Srmacklem else 1072191783Srmacklem vput(ndp->ni_dvp); 1073191783Srmacklem vput(vp); 1074224086Szack NFSEXITCODE(error); 1075191783Srmacklem return (error); 1076191783Srmacklem} 1077191783Srmacklem 1078191783Srmacklem/* 1079191783Srmacklem * Rename vnode op. 1080191783Srmacklem */ 1081191783Srmacklemint 1082191783Srmacklemnfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, 1083191783Srmacklem u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p) 1084191783Srmacklem{ 1085191783Srmacklem struct vnode *fvp, *tvp, *tdvp; 1086191783Srmacklem int error = 0; 1087191783Srmacklem 1088191783Srmacklem fvp = fromndp->ni_vp; 1089191783Srmacklem if (ndstat) { 1090191783Srmacklem vrele(fromndp->ni_dvp); 1091191783Srmacklem vrele(fvp); 1092191783Srmacklem error = ndstat; 1093191783Srmacklem goto out1; 1094191783Srmacklem } 1095191783Srmacklem tdvp = tondp->ni_dvp; 1096191783Srmacklem tvp = tondp->ni_vp; 1097191783Srmacklem if (tvp != NULL) { 1098191783Srmacklem if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1099191783Srmacklem error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST; 1100191783Srmacklem goto out; 1101191783Srmacklem } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1102191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST; 1103191783Srmacklem goto out; 1104191783Srmacklem } 1105191783Srmacklem if (tvp->v_type == VDIR && tvp->v_mountedhere) { 1106191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1107191783Srmacklem goto out; 1108191783Srmacklem } 1109191783Srmacklem 1110191783Srmacklem /* 1111191783Srmacklem * A rename to '.' or '..' results in a prematurely 1112191783Srmacklem * unlocked vnode on FreeBSD5, so I'm just going to fail that 1113191783Srmacklem * here. 1114191783Srmacklem */ 1115191783Srmacklem if ((tondp->ni_cnd.cn_namelen == 1 && 1116191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.') || 1117191783Srmacklem (tondp->ni_cnd.cn_namelen == 2 && 1118191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.' && 1119191783Srmacklem tondp->ni_cnd.cn_nameptr[1] == '.')) { 1120191783Srmacklem error = EINVAL; 1121191783Srmacklem goto out; 1122191783Srmacklem } 1123191783Srmacklem } 1124191783Srmacklem if (fvp->v_type == VDIR && fvp->v_mountedhere) { 1125191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1126191783Srmacklem goto out; 1127191783Srmacklem } 1128191783Srmacklem if (fvp->v_mount != tdvp->v_mount) { 1129191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1130191783Srmacklem goto out; 1131191783Srmacklem } 1132191783Srmacklem if (fvp == tdvp) { 1133191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL; 1134191783Srmacklem goto out; 1135191783Srmacklem } 1136191783Srmacklem if (fvp == tvp) { 1137191783Srmacklem /* 1138191783Srmacklem * If source and destination are the same, there is nothing to 1139191783Srmacklem * do. Set error to -1 to indicate this. 1140191783Srmacklem */ 1141191783Srmacklem error = -1; 1142191783Srmacklem goto out; 1143191783Srmacklem } 1144191783Srmacklem if (ndflag & ND_NFSV4) { 1145224081Szack if (NFSVOPLOCK(fvp, LK_EXCLUSIVE) == 0) { 1146216893Srmacklem error = nfsrv_checkremove(fvp, 0, p); 1147224082Szack NFSVOPUNLOCK(fvp, 0); 1148216893Srmacklem } else 1149216893Srmacklem error = EPERM; 1150191783Srmacklem if (tvp && !error) 1151191783Srmacklem error = nfsrv_checkremove(tvp, 1, p); 1152191783Srmacklem } else { 1153191783Srmacklem /* 1154191783Srmacklem * For NFSv2 and NFSv3, try to get rid of the delegation, so 1155191783Srmacklem * that the NFSv4 client won't be confused by the rename. 1156191783Srmacklem * Since nfsd_recalldelegation() can only be called on an 1157191783Srmacklem * unlocked vnode at this point and fvp is the file that will 1158191783Srmacklem * still exist after the rename, just do fvp. 1159191783Srmacklem */ 1160191783Srmacklem nfsd_recalldelegation(fvp, p); 1161191783Srmacklem } 1162191783Srmacklemout: 1163191783Srmacklem if (!error) { 1164191783Srmacklem error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, 1165191783Srmacklem &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, 1166191783Srmacklem &tondp->ni_cnd); 1167191783Srmacklem } else { 1168191783Srmacklem if (tdvp == tvp) 1169191783Srmacklem vrele(tdvp); 1170191783Srmacklem else 1171191783Srmacklem vput(tdvp); 1172191783Srmacklem if (tvp) 1173191783Srmacklem vput(tvp); 1174191783Srmacklem vrele(fromndp->ni_dvp); 1175191783Srmacklem vrele(fvp); 1176191783Srmacklem if (error == -1) 1177191783Srmacklem error = 0; 1178191783Srmacklem } 1179191783Srmacklem vrele(tondp->ni_startdir); 1180191783Srmacklem nfsvno_relpathbuf(tondp); 1181191783Srmacklemout1: 1182191783Srmacklem vrele(fromndp->ni_startdir); 1183191783Srmacklem nfsvno_relpathbuf(fromndp); 1184224086Szack NFSEXITCODE(error); 1185191783Srmacklem return (error); 1186191783Srmacklem} 1187191783Srmacklem 1188191783Srmacklem/* 1189191783Srmacklem * Link vnode op. 1190191783Srmacklem */ 1191191783Srmacklemint 1192191783Srmacklemnfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred, 1193191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1194191783Srmacklem{ 1195191783Srmacklem struct vnode *xp; 1196191783Srmacklem int error = 0; 1197191783Srmacklem 1198191783Srmacklem xp = ndp->ni_vp; 1199191783Srmacklem if (xp != NULL) { 1200191783Srmacklem error = EEXIST; 1201191783Srmacklem } else { 1202191783Srmacklem xp = ndp->ni_dvp; 1203191783Srmacklem if (vp->v_mount != xp->v_mount) 1204191783Srmacklem error = EXDEV; 1205191783Srmacklem } 1206191783Srmacklem if (!error) { 1207224081Szack NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY); 1208216893Srmacklem if ((vp->v_iflag & VI_DOOMED) == 0) 1209216893Srmacklem error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); 1210216893Srmacklem else 1211216893Srmacklem error = EPERM; 1212191783Srmacklem if (ndp->ni_dvp == vp) 1213191783Srmacklem vrele(ndp->ni_dvp); 1214191783Srmacklem else 1215191783Srmacklem vput(ndp->ni_dvp); 1216224082Szack NFSVOPUNLOCK(vp, 0); 1217191783Srmacklem } else { 1218191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1219191783Srmacklem vrele(ndp->ni_dvp); 1220191783Srmacklem else 1221191783Srmacklem vput(ndp->ni_dvp); 1222191783Srmacklem if (ndp->ni_vp) 1223191783Srmacklem vrele(ndp->ni_vp); 1224191783Srmacklem } 1225191783Srmacklem nfsvno_relpathbuf(ndp); 1226224086Szack NFSEXITCODE(error); 1227191783Srmacklem return (error); 1228191783Srmacklem} 1229191783Srmacklem 1230191783Srmacklem/* 1231191783Srmacklem * Do the fsync() appropriate for the commit. 1232191783Srmacklem */ 1233191783Srmacklemint 1234191783Srmacklemnfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, 1235191783Srmacklem struct thread *td) 1236191783Srmacklem{ 1237191783Srmacklem int error = 0; 1238191783Srmacklem 1239191783Srmacklem if (cnt > MAX_COMMIT_COUNT) { 1240191783Srmacklem /* 1241191783Srmacklem * Give up and do the whole thing 1242191783Srmacklem */ 1243191783Srmacklem if (vp->v_object && 1244191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1245191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1246191783Srmacklem vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC); 1247191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1248191783Srmacklem } 1249191783Srmacklem error = VOP_FSYNC(vp, MNT_WAIT, td); 1250191783Srmacklem } else { 1251191783Srmacklem /* 1252191783Srmacklem * Locate and synchronously write any buffers that fall 1253191783Srmacklem * into the requested range. Note: we are assuming that 1254191783Srmacklem * f_iosize is a power of 2. 1255191783Srmacklem */ 1256191783Srmacklem int iosize = vp->v_mount->mnt_stat.f_iosize; 1257191783Srmacklem int iomask = iosize - 1; 1258191783Srmacklem struct bufobj *bo; 1259191783Srmacklem daddr_t lblkno; 1260191783Srmacklem 1261191783Srmacklem /* 1262191783Srmacklem * Align to iosize boundry, super-align to page boundry. 1263191783Srmacklem */ 1264191783Srmacklem if (off & iomask) { 1265191783Srmacklem cnt += off & iomask; 1266191783Srmacklem off &= ~(u_quad_t)iomask; 1267191783Srmacklem } 1268191783Srmacklem if (off & PAGE_MASK) { 1269191783Srmacklem cnt += off & PAGE_MASK; 1270191783Srmacklem off &= ~(u_quad_t)PAGE_MASK; 1271191783Srmacklem } 1272191783Srmacklem lblkno = off / iosize; 1273191783Srmacklem 1274191783Srmacklem if (vp->v_object && 1275191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1276191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1277218345Salc vm_object_page_clean(vp->v_object, off, off + cnt, 1278218345Salc OBJPC_SYNC); 1279191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1280191783Srmacklem } 1281191783Srmacklem 1282191783Srmacklem bo = &vp->v_bufobj; 1283191783Srmacklem BO_LOCK(bo); 1284191783Srmacklem while (cnt > 0) { 1285191783Srmacklem struct buf *bp; 1286191783Srmacklem 1287191783Srmacklem /* 1288191783Srmacklem * If we have a buffer and it is marked B_DELWRI we 1289191783Srmacklem * have to lock and write it. Otherwise the prior 1290191783Srmacklem * write is assumed to have already been committed. 1291191783Srmacklem * 1292191783Srmacklem * gbincore() can return invalid buffers now so we 1293191783Srmacklem * have to check that bit as well (though B_DELWRI 1294191783Srmacklem * should not be set if B_INVAL is set there could be 1295191783Srmacklem * a race here since we haven't locked the buffer). 1296191783Srmacklem */ 1297191783Srmacklem if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { 1298191783Srmacklem if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | 1299191783Srmacklem LK_INTERLOCK, BO_MTX(bo)) == ENOLCK) { 1300191783Srmacklem BO_LOCK(bo); 1301191783Srmacklem continue; /* retry */ 1302191783Srmacklem } 1303191783Srmacklem if ((bp->b_flags & (B_DELWRI|B_INVAL)) == 1304191783Srmacklem B_DELWRI) { 1305191783Srmacklem bremfree(bp); 1306191783Srmacklem bp->b_flags &= ~B_ASYNC; 1307191783Srmacklem bwrite(bp); 1308191783Srmacklem ++nfs_commit_miss; 1309191783Srmacklem } else 1310191783Srmacklem BUF_UNLOCK(bp); 1311191783Srmacklem BO_LOCK(bo); 1312191783Srmacklem } 1313191783Srmacklem ++nfs_commit_blks; 1314191783Srmacklem if (cnt < iosize) 1315191783Srmacklem break; 1316191783Srmacklem cnt -= iosize; 1317191783Srmacklem ++lblkno; 1318191783Srmacklem } 1319191783Srmacklem BO_UNLOCK(bo); 1320191783Srmacklem } 1321224086Szack NFSEXITCODE(error); 1322191783Srmacklem return (error); 1323191783Srmacklem} 1324191783Srmacklem 1325191783Srmacklem/* 1326191783Srmacklem * Statfs vnode op. 1327191783Srmacklem */ 1328191783Srmacklemint 1329191990Sattilionfsvno_statfs(struct vnode *vp, struct statfs *sf) 1330191783Srmacklem{ 1331221517Srmacklem int error; 1332191783Srmacklem 1333221517Srmacklem error = VFS_STATFS(vp->v_mount, sf); 1334221517Srmacklem if (error == 0) { 1335221517Srmacklem /* 1336221517Srmacklem * Since NFS handles these values as unsigned on the 1337221517Srmacklem * wire, there is no way to represent negative values, 1338221517Srmacklem * so set them to 0. Without this, they will appear 1339221517Srmacklem * to be very large positive values for clients like 1340221517Srmacklem * Solaris10. 1341221517Srmacklem */ 1342221517Srmacklem if (sf->f_bavail < 0) 1343221517Srmacklem sf->f_bavail = 0; 1344221517Srmacklem if (sf->f_ffree < 0) 1345221517Srmacklem sf->f_ffree = 0; 1346221517Srmacklem } 1347224086Szack NFSEXITCODE(error); 1348221517Srmacklem return (error); 1349191783Srmacklem} 1350191783Srmacklem 1351191783Srmacklem/* 1352191783Srmacklem * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1353191783Srmacklem * must handle nfsrv_opencheck() calls after any other access checks. 1354191783Srmacklem */ 1355191783Srmacklemvoid 1356191783Srmacklemnfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1357191783Srmacklem nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1358199616Srmacklem int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, 1359191783Srmacklem NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p, 1360191783Srmacklem struct nfsexstuff *exp, struct vnode **vpp) 1361191783Srmacklem{ 1362191783Srmacklem struct vnode *vp = NULL; 1363191783Srmacklem u_quad_t tempsize; 1364191783Srmacklem struct nfsexstuff nes; 1365191783Srmacklem 1366191783Srmacklem if (ndp->ni_vp == NULL) 1367191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1368191783Srmacklem stateidp, stp, NULL, nd, p, nd->nd_repstat); 1369191783Srmacklem if (!nd->nd_repstat) { 1370191783Srmacklem if (ndp->ni_vp == NULL) { 1371191783Srmacklem vrele(ndp->ni_startdir); 1372191783Srmacklem nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1373191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1374191783Srmacklem vput(ndp->ni_dvp); 1375191783Srmacklem nfsvno_relpathbuf(ndp); 1376191783Srmacklem if (!nd->nd_repstat) { 1377191783Srmacklem if (*exclusive_flagp) { 1378191783Srmacklem *exclusive_flagp = 0; 1379191783Srmacklem NFSVNO_ATTRINIT(nvap); 1380199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 1381199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 1382191783Srmacklem nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1383191783Srmacklem &nvap->na_vattr, cred); 1384191783Srmacklem } else { 1385191783Srmacklem nfsrv_fixattr(nd, ndp->ni_vp, nvap, 1386191783Srmacklem aclp, p, attrbitp, exp); 1387191783Srmacklem } 1388191783Srmacklem } 1389191783Srmacklem vp = ndp->ni_vp; 1390191783Srmacklem } else { 1391191783Srmacklem if (ndp->ni_startdir) 1392191783Srmacklem vrele(ndp->ni_startdir); 1393191783Srmacklem nfsvno_relpathbuf(ndp); 1394191783Srmacklem vp = ndp->ni_vp; 1395191783Srmacklem if (create == NFSV4OPEN_CREATE) { 1396191783Srmacklem if (ndp->ni_dvp == vp) 1397191783Srmacklem vrele(ndp->ni_dvp); 1398191783Srmacklem else 1399191783Srmacklem vput(ndp->ni_dvp); 1400191783Srmacklem } 1401191783Srmacklem if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 1402191783Srmacklem if (ndp->ni_cnd.cn_flags & RDONLY) 1403191783Srmacklem NFSVNO_SETEXRDONLY(&nes); 1404191783Srmacklem else 1405191783Srmacklem NFSVNO_EXINIT(&nes); 1406191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, 1407200999Srmacklem VWRITE, cred, &nes, p, 1408200999Srmacklem NFSACCCHK_NOOVERRIDE, 1409200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1410191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1411191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1412191783Srmacklem if (!nd->nd_repstat) { 1413191783Srmacklem tempsize = nvap->na_size; 1414191783Srmacklem NFSVNO_ATTRINIT(nvap); 1415191783Srmacklem nvap->na_size = tempsize; 1416191783Srmacklem nd->nd_repstat = VOP_SETATTR(vp, 1417191783Srmacklem &nvap->na_vattr, cred); 1418191783Srmacklem } 1419191783Srmacklem } else if (vp->v_type == VREG) { 1420191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1421191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1422191783Srmacklem } 1423191783Srmacklem } 1424191783Srmacklem } else { 1425191783Srmacklem if (ndp->ni_cnd.cn_flags & HASBUF) 1426191783Srmacklem nfsvno_relpathbuf(ndp); 1427191783Srmacklem if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) { 1428191783Srmacklem vrele(ndp->ni_startdir); 1429191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1430191783Srmacklem vrele(ndp->ni_dvp); 1431191783Srmacklem else 1432191783Srmacklem vput(ndp->ni_dvp); 1433191783Srmacklem if (ndp->ni_vp) 1434191783Srmacklem vput(ndp->ni_vp); 1435191783Srmacklem } 1436191783Srmacklem } 1437191783Srmacklem *vpp = vp; 1438224086Szack 1439224086Szack NFSEXITCODE2(0, nd); 1440191783Srmacklem} 1441191783Srmacklem 1442191783Srmacklem/* 1443191783Srmacklem * Updates the file rev and sets the mtime and ctime 1444191783Srmacklem * to the current clock time, returning the va_filerev and va_Xtime 1445191783Srmacklem * values. 1446191783Srmacklem */ 1447191783Srmacklemvoid 1448191783Srmacklemnfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 1449191783Srmacklem struct ucred *cred, struct thread *p) 1450191783Srmacklem{ 1451191783Srmacklem struct vattr va; 1452191783Srmacklem 1453191783Srmacklem VATTR_NULL(&va); 1454191783Srmacklem getnanotime(&va.va_mtime); 1455191783Srmacklem (void) VOP_SETATTR(vp, &va, cred); 1456216693Srmacklem (void) nfsvno_getattr(vp, nvap, cred, p, 1); 1457191783Srmacklem} 1458191783Srmacklem 1459191783Srmacklem/* 1460191783Srmacklem * Glue routine to nfsv4_fillattr(). 1461191783Srmacklem */ 1462191783Srmacklemint 1463220645Srmacklemnfsvno_fillattr(struct nfsrv_descript *nd, struct mount *mp, struct vnode *vp, 1464191783Srmacklem struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 1465220648Srmacklem struct ucred *cred, struct thread *p, int isdgram, int reterr, 1466220648Srmacklem int supports_nfsv4acls, int at_root, uint64_t mounted_on_fileno) 1467191783Srmacklem{ 1468191783Srmacklem int error; 1469191783Srmacklem 1470220645Srmacklem error = nfsv4_fillattr(nd, mp, vp, NULL, &nvap->na_vattr, fhp, rderror, 1471220648Srmacklem attrbitp, cred, p, isdgram, reterr, supports_nfsv4acls, at_root, 1472220648Srmacklem mounted_on_fileno); 1473224086Szack NFSEXITCODE2(0, nd); 1474191783Srmacklem return (error); 1475191783Srmacklem} 1476191783Srmacklem 1477191783Srmacklem/* Since the Readdir vnode ops vary, put the entire functions in here. */ 1478191783Srmacklem/* 1479191783Srmacklem * nfs readdir service 1480191783Srmacklem * - mallocs what it thinks is enough to read 1481191783Srmacklem * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 1482206170Srmacklem * - calls VOP_READDIR() 1483191783Srmacklem * - loops around building the reply 1484191783Srmacklem * if the output generated exceeds count break out of loop 1485191783Srmacklem * The NFSM_CLGET macro is used here so that the reply will be packed 1486191783Srmacklem * tightly in mbuf clusters. 1487191783Srmacklem * - it trims out records with d_fileno == 0 1488191783Srmacklem * this doesn't matter for Unix clients, but they might confuse clients 1489191783Srmacklem * for other os'. 1490191783Srmacklem * - it trims out records with d_type == DT_WHT 1491191783Srmacklem * these cannot be seen through NFS (unless we extend the protocol) 1492191783Srmacklem * The alternate call nfsrvd_readdirplus() does lookups as well. 1493191783Srmacklem * PS: The NFS protocol spec. does not clarify what the "count" byte 1494191783Srmacklem * argument is a count of.. just name strings and file id's or the 1495191783Srmacklem * entire reply rpc or ... 1496191783Srmacklem * I tried just file name and id sizes and it confused the Sun client, 1497191783Srmacklem * so I am using the full rpc size now. The "paranoia.." comment refers 1498191783Srmacklem * to including the status longwords that are not a part of the dir. 1499191783Srmacklem * "entry" structures, but are in the rpc. 1500191783Srmacklem */ 1501191783Srmacklemint 1502191783Srmacklemnfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 1503191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1504191783Srmacklem{ 1505191783Srmacklem struct dirent *dp; 1506191783Srmacklem u_int32_t *tl; 1507191783Srmacklem int dirlen; 1508191783Srmacklem char *cpos, *cend, *rbuf; 1509191783Srmacklem struct nfsvattr at; 1510191783Srmacklem int nlen, error = 0, getret = 1; 1511191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies; 1512191783Srmacklem u_int64_t off, toff, verf; 1513191783Srmacklem u_long *cookies = NULL, *cookiep; 1514191783Srmacklem struct uio io; 1515191783Srmacklem struct iovec iv; 1516216691Srmacklem int not_zfs; 1517191783Srmacklem 1518191783Srmacklem if (nd->nd_repstat) { 1519191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1520224086Szack goto out; 1521191783Srmacklem } 1522191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1523191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1524191783Srmacklem off = fxdr_unsigned(u_quad_t, *tl++); 1525191783Srmacklem } else { 1526191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1527191783Srmacklem off = fxdr_hyper(tl); 1528191783Srmacklem tl += 2; 1529191783Srmacklem verf = fxdr_hyper(tl); 1530191783Srmacklem tl += 2; 1531191783Srmacklem } 1532191783Srmacklem toff = off; 1533191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1534206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1535191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1536191783Srmacklem siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1537191783Srmacklem fullsiz = siz; 1538191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1539191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, 1540216693Srmacklem p, 1); 1541191783Srmacklem#if 0 1542191783Srmacklem /* 1543191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1544191783Srmacklem * since it is not supposed to change when entries are 1545191783Srmacklem * removed/added unless that offset cookies returned to 1546191783Srmacklem * the client are no longer valid. 1547191783Srmacklem */ 1548191783Srmacklem if (!nd->nd_repstat && toff && verf != at.na_filerev) 1549191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1550191783Srmacklem#endif 1551191783Srmacklem } 1552206170Srmacklem if (nd->nd_repstat == 0 && cnt == 0) { 1553206170Srmacklem if (nd->nd_flag & ND_NFSV2) 1554206170Srmacklem /* NFSv2 does not have NFSERR_TOOSMALL */ 1555206170Srmacklem nd->nd_repstat = EPERM; 1556206170Srmacklem else 1557206170Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1558206170Srmacklem } 1559191783Srmacklem if (!nd->nd_repstat) 1560200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1561191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1562200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1563191783Srmacklem if (nd->nd_repstat) { 1564191783Srmacklem vput(vp); 1565191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1566191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1567224086Szack goto out; 1568191783Srmacklem } 1569216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1570191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1571191783Srmacklemagain: 1572191783Srmacklem eofflag = 0; 1573191783Srmacklem if (cookies) { 1574191783Srmacklem free((caddr_t)cookies, M_TEMP); 1575191783Srmacklem cookies = NULL; 1576191783Srmacklem } 1577191783Srmacklem 1578191783Srmacklem iv.iov_base = rbuf; 1579191783Srmacklem iv.iov_len = siz; 1580191783Srmacklem io.uio_iov = &iv; 1581191783Srmacklem io.uio_iovcnt = 1; 1582191783Srmacklem io.uio_offset = (off_t)off; 1583191783Srmacklem io.uio_resid = siz; 1584191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1585191783Srmacklem io.uio_rw = UIO_READ; 1586191783Srmacklem io.uio_td = NULL; 1587191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1588191783Srmacklem &cookies); 1589191783Srmacklem off = (u_int64_t)io.uio_offset; 1590191783Srmacklem if (io.uio_resid) 1591191783Srmacklem siz -= io.uio_resid; 1592191783Srmacklem 1593191783Srmacklem if (!cookies && !nd->nd_repstat) 1594191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1595191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1596216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1597191783Srmacklem if (!nd->nd_repstat) 1598191783Srmacklem nd->nd_repstat = getret; 1599191783Srmacklem } 1600191783Srmacklem 1601191783Srmacklem /* 1602191783Srmacklem * Handles the failed cases. nd->nd_repstat == 0 past here. 1603191783Srmacklem */ 1604191783Srmacklem if (nd->nd_repstat) { 1605216692Srmacklem vput(vp); 1606191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1607191783Srmacklem if (cookies) 1608191783Srmacklem free((caddr_t)cookies, M_TEMP); 1609191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1610191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1611224086Szack goto out; 1612191783Srmacklem } 1613191783Srmacklem /* 1614191783Srmacklem * If nothing read, return eof 1615191783Srmacklem * rpc reply 1616191783Srmacklem */ 1617191783Srmacklem if (siz == 0) { 1618216692Srmacklem vput(vp); 1619191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1620191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1621191783Srmacklem } else { 1622191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1623191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1624191783Srmacklem txdr_hyper(at.na_filerev, tl); 1625191783Srmacklem tl += 2; 1626191783Srmacklem } 1627191783Srmacklem *tl++ = newnfs_false; 1628191783Srmacklem *tl = newnfs_true; 1629191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1630191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1631224086Szack goto out; 1632191783Srmacklem } 1633191783Srmacklem 1634191783Srmacklem /* 1635191783Srmacklem * Check for degenerate cases of nothing useful read. 1636191783Srmacklem * If so go try again 1637191783Srmacklem */ 1638191783Srmacklem cpos = rbuf; 1639191783Srmacklem cend = rbuf + siz; 1640191783Srmacklem dp = (struct dirent *)cpos; 1641191783Srmacklem cookiep = cookies; 1642191783Srmacklem 1643191783Srmacklem /* 1644191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1645191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1646191783Srmacklem * skip over the records that precede the requested offset. This 1647191783Srmacklem * requires the assumption that file offset cookies monotonically 1648191783Srmacklem * increase. 1649216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1650216691Srmacklem * this is not done when ZFS is the file system. 1651191783Srmacklem */ 1652191783Srmacklem while (cpos < cend && ncookies > 0 && 1653191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1654216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff))) { 1655191783Srmacklem cpos += dp->d_reclen; 1656191783Srmacklem dp = (struct dirent *)cpos; 1657191783Srmacklem cookiep++; 1658191783Srmacklem ncookies--; 1659191783Srmacklem } 1660191783Srmacklem if (cpos >= cend || ncookies == 0) { 1661191783Srmacklem siz = fullsiz; 1662191783Srmacklem toff = off; 1663191783Srmacklem goto again; 1664191783Srmacklem } 1665216692Srmacklem vput(vp); 1666191783Srmacklem 1667191783Srmacklem /* 1668191783Srmacklem * dirlen is the size of the reply, including all XDR and must 1669191783Srmacklem * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 1670191783Srmacklem * if the XDR should be included in "count", but to be safe, we do. 1671191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now.) 1672191783Srmacklem */ 1673191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1674191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1675191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1676191783Srmacklem txdr_hyper(at.na_filerev, tl); 1677191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1678191783Srmacklem } else { 1679191783Srmacklem dirlen = 2 * NFSX_UNSIGNED; 1680191783Srmacklem } 1681191783Srmacklem 1682191783Srmacklem /* Loop through the records and build reply */ 1683191783Srmacklem while (cpos < cend && ncookies > 0) { 1684191783Srmacklem nlen = dp->d_namlen; 1685191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1686191783Srmacklem nlen <= NFS_MAXNAMLEN) { 1687191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1688191783Srmacklem dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1689191783Srmacklem else 1690191783Srmacklem dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1691191783Srmacklem if (dirlen > cnt) { 1692191783Srmacklem eofflag = 0; 1693191783Srmacklem break; 1694191783Srmacklem } 1695191783Srmacklem 1696191783Srmacklem /* 1697191783Srmacklem * Build the directory record xdr from 1698191783Srmacklem * the dirent entry. 1699191783Srmacklem */ 1700191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1701191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1702191783Srmacklem *tl++ = newnfs_true; 1703191783Srmacklem *tl++ = 0; 1704191783Srmacklem } else { 1705191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1706191783Srmacklem *tl++ = newnfs_true; 1707191783Srmacklem } 1708191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1709191783Srmacklem (void) nfsm_strtom(nd, dp->d_name, nlen); 1710191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1711191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1712191783Srmacklem *tl++ = 0; 1713191783Srmacklem } else 1714191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1715191783Srmacklem *tl = txdr_unsigned(*cookiep); 1716191783Srmacklem } 1717191783Srmacklem cpos += dp->d_reclen; 1718191783Srmacklem dp = (struct dirent *)cpos; 1719191783Srmacklem cookiep++; 1720191783Srmacklem ncookies--; 1721191783Srmacklem } 1722191783Srmacklem if (cpos < cend) 1723191783Srmacklem eofflag = 0; 1724191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1725191783Srmacklem *tl++ = newnfs_false; 1726191783Srmacklem if (eofflag) 1727191783Srmacklem *tl = newnfs_true; 1728191783Srmacklem else 1729191783Srmacklem *tl = newnfs_false; 1730191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1731191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1732224086Szack 1733224086Szackout: 1734224086Szack NFSEXITCODE2(0, nd); 1735191783Srmacklem return (0); 1736191783Srmacklemnfsmout: 1737191783Srmacklem vput(vp); 1738224086Szack NFSEXITCODE2(error, nd); 1739191783Srmacklem return (error); 1740191783Srmacklem} 1741191783Srmacklem 1742191783Srmacklem/* 1743191783Srmacklem * Readdirplus for V3 and Readdir for V4. 1744191783Srmacklem */ 1745191783Srmacklemint 1746191783Srmacklemnfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 1747191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1748191783Srmacklem{ 1749191783Srmacklem struct dirent *dp; 1750191783Srmacklem u_int32_t *tl; 1751191783Srmacklem int dirlen; 1752191783Srmacklem char *cpos, *cend, *rbuf; 1753191783Srmacklem struct vnode *nvp; 1754191783Srmacklem fhandle_t nfh; 1755191783Srmacklem struct nfsvattr nva, at, *nvap = &nva; 1756191783Srmacklem struct mbuf *mb0, *mb1; 1757191783Srmacklem struct nfsreferral *refp; 1758199715Srmacklem int nlen, r, error = 0, getret = 1, usevget = 1; 1759191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 1760191783Srmacklem caddr_t bpos0, bpos1; 1761191783Srmacklem u_int64_t off, toff, verf; 1762191783Srmacklem u_long *cookies = NULL, *cookiep; 1763191783Srmacklem nfsattrbit_t attrbits, rderrbits, savbits; 1764191783Srmacklem struct uio io; 1765191783Srmacklem struct iovec iv; 1766199715Srmacklem struct componentname cn; 1767220648Srmacklem int at_root, needs_unbusy, not_zfs, supports_nfsv4acls; 1768220645Srmacklem struct mount *mp, *new_mp; 1769220645Srmacklem uint64_t mounted_on_fileno; 1770191783Srmacklem 1771191783Srmacklem if (nd->nd_repstat) { 1772191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1773224086Szack goto out; 1774191783Srmacklem } 1775191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 1776191783Srmacklem off = fxdr_hyper(tl); 1777191783Srmacklem toff = off; 1778191783Srmacklem tl += 2; 1779191783Srmacklem verf = fxdr_hyper(tl); 1780191783Srmacklem tl += 2; 1781191783Srmacklem siz = fxdr_unsigned(int, *tl++); 1782191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1783191783Srmacklem 1784191783Srmacklem /* 1785191783Srmacklem * Use the server's maximum data transfer size as the upper bound 1786191783Srmacklem * on reply datalen. 1787191783Srmacklem */ 1788206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1789191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1790191783Srmacklem 1791191783Srmacklem /* 1792191783Srmacklem * siz is a "hint" of how much directory information (name, fileid, 1793191783Srmacklem * cookie) should be in the reply. At least one client "hints" 0, 1794191783Srmacklem * so I set it to cnt for that case. I also round it up to the 1795191783Srmacklem * next multiple of DIRBLKSIZ. 1796191783Srmacklem */ 1797206170Srmacklem if (siz <= 0) 1798191783Srmacklem siz = cnt; 1799191783Srmacklem siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1800191783Srmacklem 1801191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1802191783Srmacklem error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1803191783Srmacklem if (error) 1804191783Srmacklem goto nfsmout; 1805191783Srmacklem NFSSET_ATTRBIT(&savbits, &attrbits); 1806191783Srmacklem NFSCLRNOTFILLABLE_ATTRBIT(&attrbits); 1807191783Srmacklem NFSZERO_ATTRBIT(&rderrbits); 1808191783Srmacklem NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 1809191783Srmacklem } else { 1810191783Srmacklem NFSZERO_ATTRBIT(&attrbits); 1811191783Srmacklem } 1812191783Srmacklem fullsiz = siz; 1813216693Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1814191783Srmacklem if (!nd->nd_repstat) { 1815191783Srmacklem if (off && verf != at.na_filerev) { 1816191783Srmacklem /* 1817191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1818191783Srmacklem * since it is not supposed to change when entries are 1819191783Srmacklem * removed/added unless that offset cookies returned to 1820191783Srmacklem * the client are no longer valid. 1821191783Srmacklem */ 1822191783Srmacklem#if 0 1823191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1824191783Srmacklem nd->nd_repstat = NFSERR_NOTSAME; 1825191783Srmacklem } else { 1826191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1827191783Srmacklem } 1828191783Srmacklem#endif 1829191783Srmacklem } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) { 1830191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1831191783Srmacklem } 1832191783Srmacklem } 1833191783Srmacklem if (!nd->nd_repstat && vp->v_type != VDIR) 1834191783Srmacklem nd->nd_repstat = NFSERR_NOTDIR; 1835191783Srmacklem if (!nd->nd_repstat && cnt == 0) 1836191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1837191783Srmacklem if (!nd->nd_repstat) 1838200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1839191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1840200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1841191783Srmacklem if (nd->nd_repstat) { 1842191783Srmacklem vput(vp); 1843191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1844191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1845224086Szack goto out; 1846191783Srmacklem } 1847216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1848191783Srmacklem 1849191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1850191783Srmacklemagain: 1851191783Srmacklem eofflag = 0; 1852191783Srmacklem if (cookies) { 1853191783Srmacklem free((caddr_t)cookies, M_TEMP); 1854191783Srmacklem cookies = NULL; 1855191783Srmacklem } 1856191783Srmacklem 1857191783Srmacklem iv.iov_base = rbuf; 1858191783Srmacklem iv.iov_len = siz; 1859191783Srmacklem io.uio_iov = &iv; 1860191783Srmacklem io.uio_iovcnt = 1; 1861191783Srmacklem io.uio_offset = (off_t)off; 1862191783Srmacklem io.uio_resid = siz; 1863191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1864191783Srmacklem io.uio_rw = UIO_READ; 1865191783Srmacklem io.uio_td = NULL; 1866191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1867191783Srmacklem &cookies); 1868191783Srmacklem off = (u_int64_t)io.uio_offset; 1869191783Srmacklem if (io.uio_resid) 1870191783Srmacklem siz -= io.uio_resid; 1871191783Srmacklem 1872216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1873191783Srmacklem 1874191783Srmacklem if (!cookies && !nd->nd_repstat) 1875191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1876191783Srmacklem if (!nd->nd_repstat) 1877191783Srmacklem nd->nd_repstat = getret; 1878191783Srmacklem if (nd->nd_repstat) { 1879199715Srmacklem vput(vp); 1880191783Srmacklem if (cookies) 1881191783Srmacklem free((caddr_t)cookies, M_TEMP); 1882191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1883191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1884191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1885224086Szack goto out; 1886191783Srmacklem } 1887191783Srmacklem /* 1888191783Srmacklem * If nothing read, return eof 1889191783Srmacklem * rpc reply 1890191783Srmacklem */ 1891191783Srmacklem if (siz == 0) { 1892199715Srmacklem vput(vp); 1893191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1894191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1895191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1896191783Srmacklem txdr_hyper(at.na_filerev, tl); 1897191783Srmacklem tl += 2; 1898191783Srmacklem *tl++ = newnfs_false; 1899191783Srmacklem *tl = newnfs_true; 1900191783Srmacklem free((caddr_t)cookies, M_TEMP); 1901191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1902224086Szack goto out; 1903191783Srmacklem } 1904191783Srmacklem 1905191783Srmacklem /* 1906191783Srmacklem * Check for degenerate cases of nothing useful read. 1907191783Srmacklem * If so go try again 1908191783Srmacklem */ 1909191783Srmacklem cpos = rbuf; 1910191783Srmacklem cend = rbuf + siz; 1911191783Srmacklem dp = (struct dirent *)cpos; 1912191783Srmacklem cookiep = cookies; 1913191783Srmacklem 1914191783Srmacklem /* 1915191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1916191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1917191783Srmacklem * skip over the records that precede the requested offset. This 1918191783Srmacklem * requires the assumption that file offset cookies monotonically 1919191783Srmacklem * increase. 1920216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1921216691Srmacklem * this is not done when ZFS is the file system. 1922191783Srmacklem */ 1923191783Srmacklem while (cpos < cend && ncookies > 0 && 1924191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1925216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff) || 1926191783Srmacklem ((nd->nd_flag & ND_NFSV4) && 1927191783Srmacklem ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 1928191783Srmacklem (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 1929191783Srmacklem cpos += dp->d_reclen; 1930191783Srmacklem dp = (struct dirent *)cpos; 1931191783Srmacklem cookiep++; 1932191783Srmacklem ncookies--; 1933191783Srmacklem } 1934191783Srmacklem if (cpos >= cend || ncookies == 0) { 1935191783Srmacklem siz = fullsiz; 1936191783Srmacklem toff = off; 1937191783Srmacklem goto again; 1938191783Srmacklem } 1939217176Srmacklem 1940217176Srmacklem /* 1941217176Srmacklem * Busy the file system so that the mount point won't go away 1942217176Srmacklem * and, as such, VFS_VGET() can be used safely. 1943217176Srmacklem */ 1944217176Srmacklem mp = vp->v_mount; 1945217176Srmacklem vfs_ref(mp); 1946224082Szack NFSVOPUNLOCK(vp, 0); 1947217176Srmacklem nd->nd_repstat = vfs_busy(mp, 0); 1948217176Srmacklem vfs_rel(mp); 1949217176Srmacklem if (nd->nd_repstat != 0) { 1950217176Srmacklem vrele(vp); 1951217176Srmacklem free(cookies, M_TEMP); 1952217176Srmacklem free(rbuf, M_TEMP); 1953217176Srmacklem if (nd->nd_flag & ND_NFSV3) 1954217176Srmacklem nfsrv_postopattr(nd, getret, &at); 1955224086Szack goto out; 1956217176Srmacklem } 1957191783Srmacklem 1958191783Srmacklem /* 1959191783Srmacklem * Save this position, in case there is an error before one entry 1960191783Srmacklem * is created. 1961191783Srmacklem */ 1962191783Srmacklem mb0 = nd->nd_mb; 1963191783Srmacklem bpos0 = nd->nd_bpos; 1964191783Srmacklem 1965191783Srmacklem /* 1966191783Srmacklem * Fill in the first part of the reply. 1967191783Srmacklem * dirlen is the reply length in bytes and cannot exceed cnt. 1968191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now, 1969191783Srmacklem * so we recognize when we have exceeded cnt.) 1970191783Srmacklem */ 1971191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1972191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1973191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1974191783Srmacklem } else { 1975191783Srmacklem dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 1976191783Srmacklem } 1977191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1978191783Srmacklem txdr_hyper(at.na_filerev, tl); 1979191783Srmacklem 1980191783Srmacklem /* 1981191783Srmacklem * Save this position, in case there is an empty reply needed. 1982191783Srmacklem */ 1983191783Srmacklem mb1 = nd->nd_mb; 1984191783Srmacklem bpos1 = nd->nd_bpos; 1985191783Srmacklem 1986191783Srmacklem /* Loop through the records and build reply */ 1987191783Srmacklem entrycnt = 0; 1988191783Srmacklem while (cpos < cend && ncookies > 0 && dirlen < cnt) { 1989191783Srmacklem nlen = dp->d_namlen; 1990191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1991191783Srmacklem nlen <= NFS_MAXNAMLEN && 1992191783Srmacklem ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 1993191783Srmacklem (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 1994191783Srmacklem || (nlen == 1 && dp->d_name[0] != '.'))) { 1995191783Srmacklem /* 1996191783Srmacklem * Save the current position in the reply, in case 1997191783Srmacklem * this entry exceeds cnt. 1998191783Srmacklem */ 1999191783Srmacklem mb1 = nd->nd_mb; 2000191783Srmacklem bpos1 = nd->nd_bpos; 2001191783Srmacklem 2002191783Srmacklem /* 2003191783Srmacklem * For readdir_and_lookup get the vnode using 2004191783Srmacklem * the file number. 2005191783Srmacklem */ 2006191783Srmacklem nvp = NULL; 2007191783Srmacklem refp = NULL; 2008191783Srmacklem r = 0; 2009220645Srmacklem at_root = 0; 2010220645Srmacklem needs_unbusy = 0; 2011220645Srmacklem new_mp = mp; 2012220645Srmacklem mounted_on_fileno = (uint64_t)dp->d_fileno; 2013191783Srmacklem if ((nd->nd_flag & ND_NFSV3) || 2014191783Srmacklem NFSNONZERO_ATTRBIT(&savbits)) { 2015191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2016191783Srmacklem refp = nfsv4root_getreferral(NULL, 2017191783Srmacklem vp, dp->d_fileno); 2018199715Srmacklem if (refp == NULL) { 2019199715Srmacklem if (usevget) 2020217176Srmacklem r = VFS_VGET(mp, dp->d_fileno, 2021217176Srmacklem LK_SHARED, &nvp); 2022199715Srmacklem else 2023199715Srmacklem r = EOPNOTSUPP; 2024199715Srmacklem if (r == EOPNOTSUPP) { 2025199715Srmacklem if (usevget) { 2026199715Srmacklem usevget = 0; 2027199715Srmacklem cn.cn_nameiop = LOOKUP; 2028199715Srmacklem cn.cn_lkflags = 2029216700Srmacklem LK_SHARED | 2030199715Srmacklem LK_RETRY; 2031199715Srmacklem cn.cn_cred = 2032199715Srmacklem nd->nd_cred; 2033199715Srmacklem cn.cn_thread = p; 2034199715Srmacklem } 2035199715Srmacklem cn.cn_nameptr = dp->d_name; 2036199715Srmacklem cn.cn_namelen = nlen; 2037199715Srmacklem cn.cn_flags = ISLASTCN | 2038199715Srmacklem NOFOLLOW | LOCKLEAF | 2039199715Srmacklem MPSAFE; 2040199715Srmacklem if (nlen == 2 && 2041199715Srmacklem dp->d_name[0] == '.' && 2042199715Srmacklem dp->d_name[1] == '.') 2043199715Srmacklem cn.cn_flags |= 2044199715Srmacklem ISDOTDOT; 2045224081Szack if (NFSVOPLOCK(vp, LK_SHARED) 2046216692Srmacklem != 0) { 2047216692Srmacklem nd->nd_repstat = EPERM; 2048216692Srmacklem break; 2049216692Srmacklem } 2050214149Srmacklem if ((vp->v_vflag & VV_ROOT) != 0 2051214149Srmacklem && (cn.cn_flags & ISDOTDOT) 2052214149Srmacklem != 0) { 2053214149Srmacklem vref(vp); 2054214149Srmacklem nvp = vp; 2055214149Srmacklem r = 0; 2056220507Srmacklem } else { 2057214149Srmacklem r = VOP_LOOKUP(vp, &nvp, 2058214149Srmacklem &cn); 2059220507Srmacklem if (vp != nvp) 2060224082Szack NFSVOPUNLOCK(vp, 2061220507Srmacklem 0); 2062220507Srmacklem } 2063199715Srmacklem } 2064220645Srmacklem 2065220645Srmacklem /* 2066220645Srmacklem * For NFSv4, check to see if nvp is 2067220645Srmacklem * a mount point and get the mount 2068220645Srmacklem * point vnode, as required. 2069220645Srmacklem */ 2070220645Srmacklem if (r == 0 && 2071220645Srmacklem nfsrv_enable_crossmntpt != 0 && 2072220645Srmacklem (nd->nd_flag & ND_NFSV4) != 0 && 2073220645Srmacklem nvp->v_type == VDIR && 2074220645Srmacklem nvp->v_mountedhere != NULL) { 2075220645Srmacklem new_mp = nvp->v_mountedhere; 2076220645Srmacklem r = vfs_busy(new_mp, 0); 2077220645Srmacklem vput(nvp); 2078220645Srmacklem nvp = NULL; 2079220645Srmacklem if (r == 0) { 2080220645Srmacklem r = VFS_ROOT(new_mp, 2081220645Srmacklem LK_SHARED, &nvp); 2082220645Srmacklem needs_unbusy = 1; 2083220645Srmacklem if (r == 0) 2084220645Srmacklem at_root = 1; 2085220645Srmacklem } 2086220645Srmacklem } 2087199715Srmacklem } 2088191783Srmacklem if (!r) { 2089191783Srmacklem if (refp == NULL && 2090191783Srmacklem ((nd->nd_flag & ND_NFSV3) || 2091191783Srmacklem NFSNONZERO_ATTRBIT(&attrbits))) { 2092191783Srmacklem r = nfsvno_getfh(nvp, &nfh, p); 2093191783Srmacklem if (!r) 2094191783Srmacklem r = nfsvno_getattr(nvp, nvap, 2095216693Srmacklem nd->nd_cred, p, 1); 2096191783Srmacklem } 2097191783Srmacklem } else { 2098191783Srmacklem nvp = NULL; 2099191783Srmacklem } 2100191783Srmacklem if (r) { 2101191783Srmacklem if (!NFSISSET_ATTRBIT(&attrbits, 2102191783Srmacklem NFSATTRBIT_RDATTRERROR)) { 2103191783Srmacklem if (nvp != NULL) 2104191783Srmacklem vput(nvp); 2105220645Srmacklem if (needs_unbusy != 0) 2106220645Srmacklem vfs_unbusy(new_mp); 2107191783Srmacklem nd->nd_repstat = r; 2108191783Srmacklem break; 2109191783Srmacklem } 2110191783Srmacklem } 2111191783Srmacklem } 2112191783Srmacklem 2113191783Srmacklem /* 2114191783Srmacklem * Build the directory record xdr 2115191783Srmacklem */ 2116191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 2117191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2118191783Srmacklem *tl++ = newnfs_true; 2119191783Srmacklem *tl++ = 0; 2120191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 2121191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2122191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2123191783Srmacklem *tl++ = 0; 2124191783Srmacklem *tl = txdr_unsigned(*cookiep); 2125191783Srmacklem nfsrv_postopattr(nd, 0, nvap); 2126191783Srmacklem dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1); 2127191783Srmacklem dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 2128191783Srmacklem if (nvp != NULL) 2129191783Srmacklem vput(nvp); 2130191783Srmacklem } else { 2131191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2132191783Srmacklem *tl++ = newnfs_true; 2133191783Srmacklem *tl++ = 0; 2134191783Srmacklem *tl = txdr_unsigned(*cookiep); 2135191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2136220648Srmacklem if (nvp != NULL) { 2137220648Srmacklem supports_nfsv4acls = 2138220648Srmacklem nfs_supportsnfsv4acls(nvp); 2139224082Szack NFSVOPUNLOCK(nvp, 0); 2140220648Srmacklem } else 2141220648Srmacklem supports_nfsv4acls = 0; 2142191783Srmacklem if (refp != NULL) { 2143191783Srmacklem dirlen += nfsrv_putreferralattr(nd, 2144191783Srmacklem &savbits, refp, 0, 2145191783Srmacklem &nd->nd_repstat); 2146191783Srmacklem if (nd->nd_repstat) { 2147191783Srmacklem if (nvp != NULL) 2148191783Srmacklem vrele(nvp); 2149220645Srmacklem if (needs_unbusy != 0) 2150220645Srmacklem vfs_unbusy(new_mp); 2151191783Srmacklem break; 2152191783Srmacklem } 2153191783Srmacklem } else if (r) { 2154220645Srmacklem dirlen += nfsvno_fillattr(nd, new_mp, 2155220645Srmacklem nvp, nvap, &nfh, r, &rderrbits, 2156220648Srmacklem nd->nd_cred, p, isdgram, 0, 2157220648Srmacklem supports_nfsv4acls, at_root, 2158220645Srmacklem mounted_on_fileno); 2159191783Srmacklem } else { 2160220645Srmacklem dirlen += nfsvno_fillattr(nd, new_mp, 2161220645Srmacklem nvp, nvap, &nfh, r, &attrbits, 2162220648Srmacklem nd->nd_cred, p, isdgram, 0, 2163220648Srmacklem supports_nfsv4acls, at_root, 2164220645Srmacklem mounted_on_fileno); 2165191783Srmacklem } 2166191783Srmacklem if (nvp != NULL) 2167191783Srmacklem vrele(nvp); 2168191783Srmacklem dirlen += (3 * NFSX_UNSIGNED); 2169191783Srmacklem } 2170220645Srmacklem if (needs_unbusy != 0) 2171220645Srmacklem vfs_unbusy(new_mp); 2172191783Srmacklem if (dirlen <= cnt) 2173191783Srmacklem entrycnt++; 2174191783Srmacklem } 2175191783Srmacklem cpos += dp->d_reclen; 2176191783Srmacklem dp = (struct dirent *)cpos; 2177191783Srmacklem cookiep++; 2178191783Srmacklem ncookies--; 2179191783Srmacklem } 2180216692Srmacklem vrele(vp); 2181217176Srmacklem vfs_unbusy(mp); 2182191783Srmacklem 2183191783Srmacklem /* 2184191783Srmacklem * If dirlen > cnt, we must strip off the last entry. If that 2185191783Srmacklem * results in an empty reply, report NFSERR_TOOSMALL. 2186191783Srmacklem */ 2187191783Srmacklem if (dirlen > cnt || nd->nd_repstat) { 2188191783Srmacklem if (!nd->nd_repstat && entrycnt == 0) 2189191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 2190191783Srmacklem if (nd->nd_repstat) 2191191783Srmacklem newnfs_trimtrailing(nd, mb0, bpos0); 2192191783Srmacklem else 2193191783Srmacklem newnfs_trimtrailing(nd, mb1, bpos1); 2194191783Srmacklem eofflag = 0; 2195191783Srmacklem } else if (cpos < cend) 2196191783Srmacklem eofflag = 0; 2197191783Srmacklem if (!nd->nd_repstat) { 2198191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2199191783Srmacklem *tl++ = newnfs_false; 2200191783Srmacklem if (eofflag) 2201191783Srmacklem *tl = newnfs_true; 2202191783Srmacklem else 2203191783Srmacklem *tl = newnfs_false; 2204191783Srmacklem } 2205191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 2206191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 2207224086Szack 2208224086Szackout: 2209224086Szack NFSEXITCODE2(0, nd); 2210191783Srmacklem return (0); 2211191783Srmacklemnfsmout: 2212191783Srmacklem vput(vp); 2213224086Szack NFSEXITCODE2(error, nd); 2214191783Srmacklem return (error); 2215191783Srmacklem} 2216191783Srmacklem 2217191783Srmacklem/* 2218191783Srmacklem * Get the settable attributes out of the mbuf list. 2219191783Srmacklem * (Return 0 or EBADRPC) 2220191783Srmacklem */ 2221191783Srmacklemint 2222191783Srmacklemnfsrv_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2223191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2224191783Srmacklem{ 2225191783Srmacklem u_int32_t *tl; 2226191783Srmacklem struct nfsv2_sattr *sp; 2227191783Srmacklem struct timeval curtime; 2228191783Srmacklem int error = 0, toclient = 0; 2229191783Srmacklem 2230191783Srmacklem switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 2231191783Srmacklem case ND_NFSV2: 2232191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2233191783Srmacklem /* 2234191783Srmacklem * Some old clients didn't fill in the high order 16bits. 2235191783Srmacklem * --> check the low order 2 bytes for 0xffff 2236191783Srmacklem */ 2237191783Srmacklem if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 2238191783Srmacklem nvap->na_mode = nfstov_mode(sp->sa_mode); 2239191783Srmacklem if (sp->sa_uid != newnfs_xdrneg1) 2240191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 2241191783Srmacklem if (sp->sa_gid != newnfs_xdrneg1) 2242191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 2243191783Srmacklem if (sp->sa_size != newnfs_xdrneg1) 2244191783Srmacklem nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 2245191783Srmacklem if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 2246191783Srmacklem#ifdef notyet 2247191783Srmacklem fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 2248191783Srmacklem#else 2249191783Srmacklem nvap->na_atime.tv_sec = 2250191783Srmacklem fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 2251191783Srmacklem nvap->na_atime.tv_nsec = 0; 2252191783Srmacklem#endif 2253191783Srmacklem } 2254191783Srmacklem if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 2255191783Srmacklem fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 2256191783Srmacklem break; 2257191783Srmacklem case ND_NFSV3: 2258191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2259191783Srmacklem if (*tl == newnfs_true) { 2260191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2261191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2262191783Srmacklem } 2263191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2264191783Srmacklem if (*tl == newnfs_true) { 2265191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2266191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, *tl); 2267191783Srmacklem } 2268191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2269191783Srmacklem if (*tl == newnfs_true) { 2270191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2271191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, *tl); 2272191783Srmacklem } 2273191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2274191783Srmacklem if (*tl == newnfs_true) { 2275191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2276191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2277191783Srmacklem } 2278191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2279191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2280191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2281191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2282191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_atime); 2283191783Srmacklem toclient = 1; 2284191783Srmacklem break; 2285191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2286191783Srmacklem NFSGETTIME(&curtime); 2287191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2288191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2289191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2290191783Srmacklem break; 2291191783Srmacklem }; 2292191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2293191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2294191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2295191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2296191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_mtime); 2297191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2298191783Srmacklem break; 2299191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2300191783Srmacklem NFSGETTIME(&curtime); 2301191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2302191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2303191783Srmacklem if (!toclient) 2304191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2305191783Srmacklem break; 2306191783Srmacklem }; 2307191783Srmacklem break; 2308191783Srmacklem case ND_NFSV4: 2309191783Srmacklem error = nfsv4_sattr(nd, nvap, attrbitp, aclp, p); 2310191783Srmacklem }; 2311191783Srmacklemnfsmout: 2312224086Szack NFSEXITCODE2(error, nd); 2313191783Srmacklem return (error); 2314191783Srmacklem} 2315191783Srmacklem 2316191783Srmacklem/* 2317191783Srmacklem * Handle the setable attributes for V4. 2318191783Srmacklem * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 2319191783Srmacklem */ 2320191783Srmacklemint 2321191783Srmacklemnfsv4_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2322191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2323191783Srmacklem{ 2324191783Srmacklem u_int32_t *tl; 2325191783Srmacklem int attrsum = 0; 2326191783Srmacklem int i, j; 2327191783Srmacklem int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 2328191783Srmacklem int toclient = 0; 2329191783Srmacklem u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 2330191783Srmacklem uid_t uid; 2331191783Srmacklem gid_t gid; 2332191783Srmacklem struct timeval curtime; 2333191783Srmacklem 2334191783Srmacklem error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 2335191783Srmacklem if (error) 2336224086Szack goto nfsmout; 2337191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2338191783Srmacklem attrsize = fxdr_unsigned(int, *tl); 2339191783Srmacklem 2340191783Srmacklem /* 2341191783Srmacklem * Loop around getting the setable attributes. If an unsupported 2342191783Srmacklem * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 2343191783Srmacklem */ 2344191783Srmacklem if (retnotsup) { 2345191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2346191783Srmacklem bitpos = NFSATTRBIT_MAX; 2347191783Srmacklem } else { 2348191783Srmacklem bitpos = 0; 2349191783Srmacklem } 2350191783Srmacklem for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 2351191783Srmacklem if (attrsum > attrsize) { 2352191783Srmacklem error = NFSERR_BADXDR; 2353191783Srmacklem goto nfsmout; 2354191783Srmacklem } 2355191783Srmacklem if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 2356191783Srmacklem switch (bitpos) { 2357191783Srmacklem case NFSATTRBIT_SIZE: 2358191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2359191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2360191783Srmacklem attrsum += NFSX_HYPER; 2361191783Srmacklem break; 2362191783Srmacklem case NFSATTRBIT_ACL: 2363191783Srmacklem error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize, 2364191783Srmacklem p); 2365191783Srmacklem if (error) 2366191783Srmacklem goto nfsmout; 2367191783Srmacklem if (aceerr && !nd->nd_repstat) 2368224077Szack nd->nd_repstat = aceerr; 2369191783Srmacklem attrsum += aclsize; 2370191783Srmacklem break; 2371191783Srmacklem case NFSATTRBIT_ARCHIVE: 2372191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2373191783Srmacklem if (!nd->nd_repstat) 2374191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2375191783Srmacklem attrsum += NFSX_UNSIGNED; 2376191783Srmacklem break; 2377191783Srmacklem case NFSATTRBIT_HIDDEN: 2378191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2379191783Srmacklem if (!nd->nd_repstat) 2380191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2381191783Srmacklem attrsum += NFSX_UNSIGNED; 2382191783Srmacklem break; 2383191783Srmacklem case NFSATTRBIT_MIMETYPE: 2384191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2385191783Srmacklem i = fxdr_unsigned(int, *tl); 2386191783Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 2387191783Srmacklem if (error) 2388191783Srmacklem goto nfsmout; 2389191783Srmacklem if (!nd->nd_repstat) 2390191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2391191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 2392191783Srmacklem break; 2393191783Srmacklem case NFSATTRBIT_MODE: 2394191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2395191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2396191783Srmacklem attrsum += NFSX_UNSIGNED; 2397191783Srmacklem break; 2398191783Srmacklem case NFSATTRBIT_OWNER: 2399191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2400191783Srmacklem j = fxdr_unsigned(int, *tl); 2401224086Szack if (j < 0) { 2402224086Szack error = NFSERR_BADXDR; 2403224086Szack goto nfsmout; 2404224086Szack } 2405191783Srmacklem if (j > NFSV4_SMALLSTR) 2406191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2407191783Srmacklem else 2408191783Srmacklem cp = namestr; 2409191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2410191783Srmacklem if (error) { 2411191783Srmacklem if (j > NFSV4_SMALLSTR) 2412191783Srmacklem free(cp, M_NFSSTRING); 2413224086Szack goto nfsmout; 2414191783Srmacklem } 2415191783Srmacklem if (!nd->nd_repstat) { 2416191783Srmacklem nd->nd_repstat = nfsv4_strtouid(cp,j,&uid,p); 2417191783Srmacklem if (!nd->nd_repstat) 2418191783Srmacklem nvap->na_uid = uid; 2419191783Srmacklem } 2420191783Srmacklem if (j > NFSV4_SMALLSTR) 2421191783Srmacklem free(cp, M_NFSSTRING); 2422191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2423191783Srmacklem break; 2424191783Srmacklem case NFSATTRBIT_OWNERGROUP: 2425191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2426191783Srmacklem j = fxdr_unsigned(int, *tl); 2427224086Szack if (j < 0) { 2428224086Szack error = NFSERR_BADXDR; 2429224086Szack goto nfsmout; 2430224086Szack } 2431191783Srmacklem if (j > NFSV4_SMALLSTR) 2432191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2433191783Srmacklem else 2434191783Srmacklem cp = namestr; 2435191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2436191783Srmacklem if (error) { 2437191783Srmacklem if (j > NFSV4_SMALLSTR) 2438191783Srmacklem free(cp, M_NFSSTRING); 2439224086Szack goto nfsmout; 2440191783Srmacklem } 2441191783Srmacklem if (!nd->nd_repstat) { 2442191783Srmacklem nd->nd_repstat = nfsv4_strtogid(cp,j,&gid,p); 2443191783Srmacklem if (!nd->nd_repstat) 2444191783Srmacklem nvap->na_gid = gid; 2445191783Srmacklem } 2446191783Srmacklem if (j > NFSV4_SMALLSTR) 2447191783Srmacklem free(cp, M_NFSSTRING); 2448191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2449191783Srmacklem break; 2450191783Srmacklem case NFSATTRBIT_SYSTEM: 2451191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2452191783Srmacklem if (!nd->nd_repstat) 2453191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2454191783Srmacklem attrsum += NFSX_UNSIGNED; 2455191783Srmacklem break; 2456191783Srmacklem case NFSATTRBIT_TIMEACCESSSET: 2457191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2458191783Srmacklem attrsum += NFSX_UNSIGNED; 2459191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2460191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2461191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_atime); 2462191783Srmacklem toclient = 1; 2463191783Srmacklem attrsum += NFSX_V4TIME; 2464191783Srmacklem } else { 2465191783Srmacklem NFSGETTIME(&curtime); 2466191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2467191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2468191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2469191783Srmacklem } 2470191783Srmacklem break; 2471191783Srmacklem case NFSATTRBIT_TIMEBACKUP: 2472191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2473191783Srmacklem if (!nd->nd_repstat) 2474191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2475191783Srmacklem attrsum += NFSX_V4TIME; 2476191783Srmacklem break; 2477191783Srmacklem case NFSATTRBIT_TIMECREATE: 2478191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2479191783Srmacklem if (!nd->nd_repstat) 2480191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2481191783Srmacklem attrsum += NFSX_V4TIME; 2482191783Srmacklem break; 2483191783Srmacklem case NFSATTRBIT_TIMEMODIFYSET: 2484191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2485191783Srmacklem attrsum += NFSX_UNSIGNED; 2486191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2487191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2488191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_mtime); 2489191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2490191783Srmacklem attrsum += NFSX_V4TIME; 2491191783Srmacklem } else { 2492191783Srmacklem NFSGETTIME(&curtime); 2493191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2494191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2495191783Srmacklem if (!toclient) 2496191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2497191783Srmacklem } 2498191783Srmacklem break; 2499191783Srmacklem default: 2500191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2501191783Srmacklem /* 2502191783Srmacklem * set bitpos so we drop out of the loop. 2503191783Srmacklem */ 2504191783Srmacklem bitpos = NFSATTRBIT_MAX; 2505191783Srmacklem break; 2506191783Srmacklem }; 2507191783Srmacklem } 2508191783Srmacklem 2509191783Srmacklem /* 2510191783Srmacklem * some clients pad the attrlist, so we need to skip over the 2511191783Srmacklem * padding. 2512191783Srmacklem */ 2513191783Srmacklem if (attrsum > attrsize) { 2514191783Srmacklem error = NFSERR_BADXDR; 2515191783Srmacklem } else { 2516191783Srmacklem attrsize = NFSM_RNDUP(attrsize); 2517191783Srmacklem if (attrsum < attrsize) 2518191783Srmacklem error = nfsm_advance(nd, attrsize - attrsum, -1); 2519191783Srmacklem } 2520191783Srmacklemnfsmout: 2521224086Szack NFSEXITCODE2(error, nd); 2522191783Srmacklem return (error); 2523191783Srmacklem} 2524191783Srmacklem 2525191783Srmacklem/* 2526191783Srmacklem * Check/setup export credentials. 2527191783Srmacklem */ 2528191783Srmacklemint 2529191783Srmacklemnfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 2530191783Srmacklem struct ucred *credanon) 2531191783Srmacklem{ 2532191783Srmacklem int error = 0; 2533191783Srmacklem 2534191783Srmacklem /* 2535191783Srmacklem * Check/setup credentials. 2536191783Srmacklem */ 2537191783Srmacklem if (nd->nd_flag & ND_GSS) 2538192121Srmacklem exp->nes_exflag &= ~MNT_EXPORTANON; 2539191783Srmacklem 2540191783Srmacklem /* 2541192121Srmacklem * Check to see if the operation is allowed for this security flavor. 2542191783Srmacklem * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to 2543191783Srmacklem * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 2544192121Srmacklem * Also, allow Secinfo, so that it can acquire the correct flavor(s). 2545191783Srmacklem */ 2546192121Srmacklem if (nfsvno_testexp(nd, exp) && 2547192121Srmacklem nd->nd_procnum != NFSV4OP_SECINFO && 2548191783Srmacklem nd->nd_procnum != NFSPROC_FSINFO) { 2549191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2550191783Srmacklem error = NFSERR_WRONGSEC; 2551191783Srmacklem else 2552191783Srmacklem error = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2553224086Szack goto out; 2554191783Srmacklem } 2555191783Srmacklem 2556191783Srmacklem /* 2557191783Srmacklem * Check to see if the file system is exported V4 only. 2558191783Srmacklem */ 2559224086Szack if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) { 2560224086Szack error = NFSERR_PROGNOTV4; 2561224086Szack goto out; 2562224086Szack } 2563191783Srmacklem 2564191783Srmacklem /* 2565191783Srmacklem * Now, map the user credentials. 2566191783Srmacklem * (Note that ND_AUTHNONE will only be set for an NFSv3 2567191783Srmacklem * Fsinfo RPC. If set for anything else, this code might need 2568191783Srmacklem * to change.) 2569191783Srmacklem */ 2570191783Srmacklem if (NFSVNO_EXPORTED(exp) && 2571191783Srmacklem ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) || 2572191783Srmacklem NFSVNO_EXPORTANON(exp) || 2573191783Srmacklem (nd->nd_flag & ND_AUTHNONE))) { 2574191783Srmacklem nd->nd_cred->cr_uid = credanon->cr_uid; 2575191783Srmacklem nd->nd_cred->cr_gid = credanon->cr_gid; 2576194498Sbrooks crsetgroups(nd->nd_cred, credanon->cr_ngroups, 2577194498Sbrooks credanon->cr_groups); 2578191783Srmacklem } 2579224086Szack 2580224086Szackout: 2581224086Szack NFSEXITCODE2(error, nd); 2582224086Szack return (error); 2583191783Srmacklem} 2584191783Srmacklem 2585191783Srmacklem/* 2586191783Srmacklem * Check exports. 2587191783Srmacklem */ 2588191783Srmacklemint 2589191783Srmacklemnfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 2590191783Srmacklem struct ucred **credp) 2591191783Srmacklem{ 2592192121Srmacklem int i, error, *secflavors; 2593191783Srmacklem 2594191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2595192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2596192121Srmacklem if (error) { 2597192121Srmacklem if (nfs_rootfhset) { 2598192121Srmacklem exp->nes_exflag = 0; 2599192121Srmacklem exp->nes_numsecflavor = 0; 2600192121Srmacklem error = 0; 2601192121Srmacklem } 2602192121Srmacklem } else { 2603192121Srmacklem /* Copy the security flavors. */ 2604192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2605192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2606191783Srmacklem } 2607224086Szack NFSEXITCODE(error); 2608191783Srmacklem return (error); 2609191783Srmacklem} 2610191783Srmacklem 2611191783Srmacklem/* 2612191783Srmacklem * Get a vnode for a file handle and export stuff. 2613191783Srmacklem */ 2614191783Srmacklemint 2615191783Srmacklemnfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 2616216700Srmacklem int lktype, struct vnode **vpp, struct nfsexstuff *exp, 2617216700Srmacklem struct ucred **credp) 2618191783Srmacklem{ 2619192121Srmacklem int i, error, *secflavors; 2620191783Srmacklem 2621191998Srmacklem *credp = NULL; 2622192121Srmacklem exp->nes_numsecflavor = 0; 2623217063Srmacklem if (VFS_NEEDSGIANT(mp)) 2624217063Srmacklem error = ESTALE; 2625217063Srmacklem else 2626222167Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, vpp); 2627205663Srmacklem if (error != 0) 2628205663Srmacklem /* Make sure the server replies ESTALE to the client. */ 2629205663Srmacklem error = ESTALE; 2630191783Srmacklem if (nam && !error) { 2631191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2632192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2633191783Srmacklem if (error) { 2634191783Srmacklem if (nfs_rootfhset) { 2635191783Srmacklem exp->nes_exflag = 0; 2636192121Srmacklem exp->nes_numsecflavor = 0; 2637191783Srmacklem error = 0; 2638191783Srmacklem } else { 2639191783Srmacklem vput(*vpp); 2640191783Srmacklem } 2641192121Srmacklem } else { 2642192121Srmacklem /* Copy the security flavors. */ 2643192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2644192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2645191783Srmacklem } 2646191783Srmacklem } 2647216700Srmacklem if (error == 0 && lktype == LK_SHARED) 2648216700Srmacklem /* 2649216700Srmacklem * It would be much better to pass lktype to VFS_FHTOVP(), 2650216700Srmacklem * but this will have to do until VFS_FHTOVP() has a lock 2651216700Srmacklem * type argument like VFS_VGET(). 2652216700Srmacklem */ 2653224081Szack NFSVOPLOCK(*vpp, LK_DOWNGRADE | LK_RETRY); 2654224086Szack 2655224086Szack NFSEXITCODE(error); 2656191783Srmacklem return (error); 2657191783Srmacklem} 2658191783Srmacklem 2659191783Srmacklem/* 2660191783Srmacklem * nfsd_fhtovp() - convert a fh to a vnode ptr 2661191783Srmacklem * - look up fsid in mount list (if not found ret error) 2662191783Srmacklem * - get vp and export rights by calling nfsvno_fhtovp() 2663191783Srmacklem * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2664191783Srmacklem * for AUTH_SYS 2665217063Srmacklem * - if mpp != NULL, return the mount point so that it can 2666217063Srmacklem * be used for vn_finished_write() by the caller 2667191783Srmacklem */ 2668191783Srmacklemvoid 2669216700Srmacklemnfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype, 2670191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, 2671191783Srmacklem struct mount **mpp, int startwrite, struct thread *p) 2672191783Srmacklem{ 2673191783Srmacklem struct mount *mp; 2674191783Srmacklem struct ucred *credanon; 2675191783Srmacklem fhandle_t *fhp; 2676191783Srmacklem 2677191783Srmacklem fhp = (fhandle_t *)nfp->nfsrvfh_data; 2678191783Srmacklem /* 2679191783Srmacklem * Check for the special case of the nfsv4root_fh. 2680191783Srmacklem */ 2681217017Srmacklem mp = vfs_busyfs(&fhp->fh_fsid); 2682217063Srmacklem if (mpp != NULL) 2683217063Srmacklem *mpp = mp; 2684217017Srmacklem if (mp == NULL) { 2685191783Srmacklem *vpp = NULL; 2686191783Srmacklem nd->nd_repstat = ESTALE; 2687224086Szack goto out; 2688191783Srmacklem } 2689191783Srmacklem 2690191783Srmacklem if (startwrite) 2691191783Srmacklem vn_start_write(NULL, mpp, V_WAIT); 2692191783Srmacklem 2693216700Srmacklem nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp, 2694191783Srmacklem &credanon); 2695217017Srmacklem vfs_unbusy(mp); 2696191783Srmacklem 2697191783Srmacklem /* 2698191783Srmacklem * For NFSv4 without a pseudo root fs, unexported file handles 2699191783Srmacklem * can be returned, so that Lookup works everywhere. 2700191783Srmacklem */ 2701191783Srmacklem if (!nd->nd_repstat && exp->nes_exflag == 0 && 2702191783Srmacklem !(nd->nd_flag & ND_NFSV4)) { 2703191783Srmacklem vput(*vpp); 2704191783Srmacklem nd->nd_repstat = EACCES; 2705191783Srmacklem } 2706191783Srmacklem 2707191783Srmacklem /* 2708191783Srmacklem * Personally, I've never seen any point in requiring a 2709191783Srmacklem * reserved port#, since only in the rare case where the 2710191783Srmacklem * clients are all boxes with secure system priviledges, 2711191783Srmacklem * does it provide any enhanced security, but... some people 2712191783Srmacklem * believe it to be useful and keep putting this code back in. 2713191783Srmacklem * (There is also some "security checker" out there that 2714191783Srmacklem * complains if the nfs server doesn't enforce this.) 2715191783Srmacklem * However, note the following: 2716191783Srmacklem * RFC3530 (NFSv4) specifies that a reserved port# not be 2717191783Srmacklem * required. 2718191783Srmacklem * RFC2623 recommends that, if a reserved port# is checked for, 2719191783Srmacklem * that there be a way to turn that off--> ifdef'd. 2720191783Srmacklem */ 2721191783Srmacklem#ifdef NFS_REQRSVPORT 2722191783Srmacklem if (!nd->nd_repstat) { 2723192121Srmacklem struct sockaddr_in *saddr; 2724192121Srmacklem struct sockaddr_in6 *saddr6; 2725192121Srmacklem 2726192121Srmacklem saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 2727192121Srmacklem saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 2728192121Srmacklem if (!(nd->nd_flag & ND_NFSV4) && 2729192121Srmacklem ((saddr->sin_family == AF_INET && 2730192121Srmacklem ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 2731192121Srmacklem (saddr6->sin6_family == AF_INET6 && 2732192121Srmacklem ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 2733192121Srmacklem vput(*vpp); 2734192121Srmacklem nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2735192121Srmacklem } 2736191783Srmacklem } 2737191783Srmacklem#endif /* NFS_REQRSVPORT */ 2738191783Srmacklem 2739191783Srmacklem /* 2740191783Srmacklem * Check/setup credentials. 2741191783Srmacklem */ 2742191783Srmacklem if (!nd->nd_repstat) { 2743191783Srmacklem nd->nd_saveduid = nd->nd_cred->cr_uid; 2744191783Srmacklem nd->nd_repstat = nfsd_excred(nd, exp, credanon); 2745191783Srmacklem if (nd->nd_repstat) 2746191783Srmacklem vput(*vpp); 2747191783Srmacklem } 2748191940Skan if (credanon != NULL) 2749191940Skan crfree(credanon); 2750191783Srmacklem if (nd->nd_repstat) { 2751191783Srmacklem if (startwrite) 2752191783Srmacklem vn_finished_write(mp); 2753191783Srmacklem *vpp = NULL; 2754217063Srmacklem if (mpp != NULL) 2755217063Srmacklem *mpp = NULL; 2756191783Srmacklem } 2757224086Szack 2758224086Szackout: 2759224086Szack NFSEXITCODE2(0, nd); 2760191783Srmacklem} 2761191783Srmacklem 2762191783Srmacklem/* 2763191783Srmacklem * glue for fp. 2764191783Srmacklem */ 2765191783Srmacklemint 2766191783Srmacklemfp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 2767191783Srmacklem{ 2768191783Srmacklem struct filedesc *fdp; 2769191783Srmacklem struct file *fp; 2770224086Szack int error = 0; 2771191783Srmacklem 2772191783Srmacklem fdp = p->td_proc->p_fd; 2773191783Srmacklem if (fd >= fdp->fd_nfiles || 2774224086Szack (fp = fdp->fd_ofiles[fd]) == NULL) { 2775224086Szack error = EBADF; 2776224086Szack goto out; 2777224086Szack } 2778191783Srmacklem *fpp = fp; 2779224086Szack 2780224086Szackout: 2781224086Szack NFSEXITCODE(error); 2782224086Szack return (error); 2783191783Srmacklem} 2784191783Srmacklem 2785191783Srmacklem/* 2786192121Srmacklem * Called from nfssvc() to update the exports list. Just call 2787191783Srmacklem * vfs_export(). This has to be done, since the v4 root fake fs isn't 2788191783Srmacklem * in the mount list. 2789191783Srmacklem */ 2790191783Srmacklemint 2791191783Srmacklemnfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 2792191783Srmacklem{ 2793191783Srmacklem struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 2794224086Szack int error = 0; 2795191783Srmacklem struct nameidata nd; 2796191783Srmacklem fhandle_t fh; 2797191783Srmacklem 2798191783Srmacklem error = vfs_export(&nfsv4root_mnt, &nfsexargp->export); 2799216894Srmacklem if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0) 2800191783Srmacklem nfs_rootfhset = 0; 2801216894Srmacklem else if (error == 0) { 2802224086Szack if (nfsexargp->fspec == NULL) { 2803224086Szack error = EPERM; 2804224086Szack goto out; 2805224086Szack } 2806191783Srmacklem /* 2807191783Srmacklem * If fspec != NULL, this is the v4root path. 2808191783Srmacklem */ 2809191783Srmacklem NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_USERSPACE, 2810191783Srmacklem nfsexargp->fspec, p); 2811191783Srmacklem if ((error = namei(&nd)) != 0) 2812224086Szack goto out; 2813191783Srmacklem error = nfsvno_getfh(nd.ni_vp, &fh, p); 2814191783Srmacklem vrele(nd.ni_vp); 2815191783Srmacklem if (!error) { 2816191783Srmacklem nfs_rootfh.nfsrvfh_len = NFSX_MYFH; 2817191783Srmacklem NFSBCOPY((caddr_t)&fh, 2818191783Srmacklem nfs_rootfh.nfsrvfh_data, 2819191783Srmacklem sizeof (fhandle_t)); 2820191783Srmacklem nfs_rootfhset = 1; 2821191783Srmacklem } 2822191783Srmacklem } 2823224086Szack 2824224086Szackout: 2825224086Szack NFSEXITCODE(error); 2826191783Srmacklem return (error); 2827191783Srmacklem} 2828191783Srmacklem 2829191783Srmacklem/* 2830191783Srmacklem * Get the tcp socket sequence numbers we need. 2831191783Srmacklem * (Maybe this should be moved to the tcp sources?) 2832191783Srmacklem */ 2833191783Srmacklemint 2834191783Srmacklemnfsrv_getsocksndseq(struct socket *so, tcp_seq *maxp, tcp_seq *unap) 2835191783Srmacklem{ 2836191783Srmacklem struct inpcb *inp; 2837191783Srmacklem struct tcpcb *tp; 2838224086Szack int error = 0; 2839191783Srmacklem 2840191783Srmacklem inp = sotoinpcb(so); 2841205010Srwatson KASSERT(inp != NULL, ("nfsrv_getsocksndseq: inp == NULL")); 2842205010Srwatson INP_RLOCK(inp); 2843205010Srwatson if (inp->inp_flags & (INP_TIMEWAIT | INP_DROPPED)) { 2844205010Srwatson INP_RUNLOCK(inp); 2845224086Szack error = EPIPE; 2846224086Szack goto out; 2847191783Srmacklem } 2848191783Srmacklem tp = intotcpcb(inp); 2849205010Srwatson if (tp->t_state != TCPS_ESTABLISHED) { 2850205010Srwatson INP_RUNLOCK(inp); 2851224086Szack error = EPIPE; 2852224086Szack goto out; 2853191783Srmacklem } 2854205010Srwatson *maxp = tp->snd_max; 2855205010Srwatson *unap = tp->snd_una; 2856191783Srmacklem INP_RUNLOCK(inp); 2857224086Szack 2858224086Szackout: 2859224086Szack NFSEXITCODE(error); 2860224086Szack return (error); 2861191783Srmacklem} 2862191783Srmacklem 2863191783Srmacklem/* 2864191783Srmacklem * This function needs to test to see if the system is near its limit 2865191783Srmacklem * for memory allocation via malloc() or mget() and return True iff 2866191783Srmacklem * either of these resources are near their limit. 2867191783Srmacklem * XXX (For now, this is just a stub.) 2868191783Srmacklem */ 2869191783Srmacklemint nfsrv_testmalloclimit = 0; 2870191783Srmacklemint 2871191783Srmacklemnfsrv_mallocmget_limit(void) 2872191783Srmacklem{ 2873191783Srmacklem static int printmesg = 0; 2874191783Srmacklem static int testval = 1; 2875191783Srmacklem 2876191783Srmacklem if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 2877191783Srmacklem if ((printmesg++ % 100) == 0) 2878191783Srmacklem printf("nfsd: malloc/mget near limit\n"); 2879191783Srmacklem return (1); 2880191783Srmacklem } 2881191783Srmacklem return (0); 2882191783Srmacklem} 2883191783Srmacklem 2884191783Srmacklem/* 2885191783Srmacklem * BSD specific initialization of a mount point. 2886191783Srmacklem */ 2887191783Srmacklemvoid 2888191783Srmacklemnfsd_mntinit(void) 2889191783Srmacklem{ 2890191783Srmacklem static int inited = 0; 2891191783Srmacklem 2892191783Srmacklem if (inited) 2893191783Srmacklem return; 2894191783Srmacklem inited = 1; 2895191783Srmacklem nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 2896191783Srmacklem TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist); 2897191783Srmacklem nfsv4root_mnt.mnt_export = NULL; 2898191783Srmacklem TAILQ_INIT(&nfsv4root_opt); 2899191783Srmacklem TAILQ_INIT(&nfsv4root_newopt); 2900191783Srmacklem nfsv4root_mnt.mnt_opt = &nfsv4root_opt; 2901191783Srmacklem nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt; 2902191783Srmacklem nfsv4root_mnt.mnt_nvnodelistsize = 0; 2903191783Srmacklem} 2904191783Srmacklem 2905191783Srmacklem/* 2906191783Srmacklem * Get a vnode for a file handle, without checking exports, etc. 2907191783Srmacklem */ 2908191783Srmacklemstruct vnode * 2909191783Srmacklemnfsvno_getvp(fhandle_t *fhp) 2910191783Srmacklem{ 2911191783Srmacklem struct mount *mp; 2912191783Srmacklem struct vnode *vp; 2913191783Srmacklem int error; 2914191783Srmacklem 2915217017Srmacklem mp = vfs_busyfs(&fhp->fh_fsid); 2916191783Srmacklem if (mp == NULL) 2917191783Srmacklem return (NULL); 2918222167Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp); 2919217017Srmacklem vfs_unbusy(mp); 2920191783Srmacklem if (error) 2921191783Srmacklem return (NULL); 2922191783Srmacklem return (vp); 2923191783Srmacklem} 2924191783Srmacklem 2925191783Srmacklem/* 2926191783Srmacklem * Do a local VOP_ADVLOCK(). 2927191783Srmacklem */ 2928191783Srmacklemint 2929191783Srmacklemnfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 2930192256Srmacklem u_int64_t end, struct thread *td) 2931191783Srmacklem{ 2932224086Szack int error = 0; 2933191783Srmacklem struct flock fl; 2934191783Srmacklem u_int64_t tlen; 2935191783Srmacklem 2936212833Srmacklem if (nfsrv_dolocallocks == 0) 2937224086Szack goto out; 2938216893Srmacklem 2939216893Srmacklem /* Check for VI_DOOMED here, so that VOP_ADVLOCK() isn't performed. */ 2940224086Szack if ((vp->v_iflag & VI_DOOMED) != 0) { 2941224086Szack error = EPERM; 2942224086Szack goto out; 2943224086Szack } 2944216893Srmacklem 2945191783Srmacklem fl.l_whence = SEEK_SET; 2946191783Srmacklem fl.l_type = ftype; 2947191783Srmacklem fl.l_start = (off_t)first; 2948191783Srmacklem if (end == NFS64BITSSET) { 2949191783Srmacklem fl.l_len = 0; 2950191783Srmacklem } else { 2951191783Srmacklem tlen = end - first; 2952191783Srmacklem fl.l_len = (off_t)tlen; 2953191783Srmacklem } 2954191783Srmacklem /* 2955192256Srmacklem * For FreeBSD8, the l_pid and l_sysid must be set to the same 2956192256Srmacklem * values for all calls, so that all locks will be held by the 2957192256Srmacklem * nfsd server. (The nfsd server handles conflicts between the 2958192256Srmacklem * various clients.) 2959192256Srmacklem * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 2960192256Srmacklem * bytes, so it can't be put in l_sysid. 2961191783Srmacklem */ 2962192503Srmacklem if (nfsv4_sysid == 0) 2963192503Srmacklem nfsv4_sysid = nlm_acquire_next_sysid(); 2964192256Srmacklem fl.l_pid = (pid_t)0; 2965192503Srmacklem fl.l_sysid = (int)nfsv4_sysid; 2966192256Srmacklem 2967224080Szack NFSVOPUNLOCK(vp, 0); 2968212833Srmacklem if (ftype == F_UNLCK) 2969212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, 2970212833Srmacklem (F_POSIX | F_REMOTE)); 2971212833Srmacklem else 2972212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 2973212833Srmacklem (F_POSIX | F_REMOTE)); 2974224080Szack NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY); 2975224086Szack 2976224086Szackout: 2977224086Szack NFSEXITCODE(error); 2978191783Srmacklem return (error); 2979191783Srmacklem} 2980191783Srmacklem 2981191783Srmacklem/* 2982191783Srmacklem * Check the nfsv4 root exports. 2983191783Srmacklem */ 2984191783Srmacklemint 2985191783Srmacklemnfsvno_v4rootexport(struct nfsrv_descript *nd) 2986191783Srmacklem{ 2987191783Srmacklem struct ucred *credanon; 2988224086Szack int exflags, error = 0, numsecflavor, *secflavors, i; 2989191783Srmacklem 2990191783Srmacklem error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags, 2991192121Srmacklem &credanon, &numsecflavor, &secflavors); 2992224086Szack if (error) { 2993224086Szack error = NFSERR_PROGUNAVAIL; 2994224086Szack goto out; 2995224086Szack } 2996191940Skan if (credanon != NULL) 2997191940Skan crfree(credanon); 2998192121Srmacklem for (i = 0; i < numsecflavor; i++) { 2999192121Srmacklem if (secflavors[i] == AUTH_SYS) 3000192121Srmacklem nd->nd_flag |= ND_EXAUTHSYS; 3001192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5) 3002192121Srmacklem nd->nd_flag |= ND_EXGSS; 3003192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5I) 3004192121Srmacklem nd->nd_flag |= ND_EXGSSINTEGRITY; 3005192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5P) 3006192121Srmacklem nd->nd_flag |= ND_EXGSSPRIVACY; 3007192121Srmacklem } 3008224086Szack 3009224086Szackout: 3010224086Szack NFSEXITCODE(error); 3011224086Szack return (error); 3012191783Srmacklem} 3013191783Srmacklem 3014191783Srmacklem/* 3015191783Srmacklem * Nfs server psuedo system call for the nfsd's 3016191783Srmacklem */ 3017191783Srmacklem/* 3018191783Srmacklem * MPSAFE 3019191783Srmacklem */ 3020191783Srmacklemstatic int 3021191783Srmacklemnfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 3022191783Srmacklem{ 3023191783Srmacklem struct file *fp; 3024192017Srmacklem struct nfsd_addsock_args sockarg; 3025192017Srmacklem struct nfsd_nfsd_args nfsdarg; 3026191783Srmacklem int error; 3027191783Srmacklem 3028191783Srmacklem if (uap->flag & NFSSVC_NFSDADDSOCK) { 3029192017Srmacklem error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 3030191783Srmacklem if (error) 3031224086Szack goto out; 3032224778Srwatson /* 3033224778Srwatson * Since we don't know what rights might be required, 3034224778Srwatson * pretend that we need them all. It is better to be too 3035224778Srwatson * careful than too reckless. 3036224778Srwatson */ 3037224778Srwatson if ((error = fget(td, sockarg.sock, CAP_SOCK_ALL, &fp)) != 0) 3038224086Szack goto out; 3039224778Srwatson return (error); 3040191783Srmacklem if (fp->f_type != DTYPE_SOCKET) { 3041191783Srmacklem fdrop(fp, td); 3042224086Szack error = EPERM; 3043224086Szack goto out; 3044191783Srmacklem } 3045191783Srmacklem error = nfsrvd_addsock(fp); 3046191783Srmacklem fdrop(fp, td); 3047191783Srmacklem } else if (uap->flag & NFSSVC_NFSDNFSD) { 3048224086Szack if (uap->argp == NULL) { 3049224086Szack error = EINVAL; 3050224086Szack goto out; 3051224086Szack } 3052192017Srmacklem error = copyin(uap->argp, (caddr_t)&nfsdarg, 3053192017Srmacklem sizeof (nfsdarg)); 3054192017Srmacklem if (error) 3055224086Szack goto out; 3056192017Srmacklem error = nfsrvd_nfsd(td, &nfsdarg); 3057191783Srmacklem } else { 3058191783Srmacklem error = nfssvc_srvcall(td, uap, td->td_ucred); 3059191783Srmacklem } 3060224086Szack 3061224086Szackout: 3062224086Szack NFSEXITCODE(error); 3063191783Srmacklem return (error); 3064191783Srmacklem} 3065191783Srmacklem 3066191783Srmacklemstatic int 3067191783Srmacklemnfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 3068191783Srmacklem{ 3069191783Srmacklem struct nfsex_args export; 3070191783Srmacklem struct file *fp = NULL; 3071191783Srmacklem int stablefd, len; 3072191783Srmacklem struct nfsd_clid adminrevoke; 3073191783Srmacklem struct nfsd_dumplist dumplist; 3074191783Srmacklem struct nfsd_dumpclients *dumpclients; 3075191783Srmacklem struct nfsd_dumplocklist dumplocklist; 3076191783Srmacklem struct nfsd_dumplocks *dumplocks; 3077191783Srmacklem struct nameidata nd; 3078191783Srmacklem vnode_t vp; 3079191783Srmacklem int error = EINVAL; 3080217432Srmacklem struct proc *procp; 3081191783Srmacklem 3082191783Srmacklem if (uap->flag & NFSSVC_PUBLICFH) { 3083191783Srmacklem NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 3084191783Srmacklem sizeof (fhandle_t)); 3085191783Srmacklem error = copyin(uap->argp, 3086191783Srmacklem &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 3087191783Srmacklem if (!error) 3088191783Srmacklem nfs_pubfhset = 1; 3089191783Srmacklem } else if (uap->flag & NFSSVC_V4ROOTEXPORT) { 3090191783Srmacklem error = copyin(uap->argp,(caddr_t)&export, 3091191783Srmacklem sizeof (struct nfsex_args)); 3092191783Srmacklem if (!error) 3093191783Srmacklem error = nfsrv_v4rootexport(&export, cred, p); 3094191783Srmacklem } else if (uap->flag & NFSSVC_NOPUBLICFH) { 3095191783Srmacklem nfs_pubfhset = 0; 3096191783Srmacklem error = 0; 3097191783Srmacklem } else if (uap->flag & NFSSVC_STABLERESTART) { 3098191783Srmacklem error = copyin(uap->argp, (caddr_t)&stablefd, 3099191783Srmacklem sizeof (int)); 3100191783Srmacklem if (!error) 3101191783Srmacklem error = fp_getfvp(p, stablefd, &fp, &vp); 3102191783Srmacklem if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 3103191783Srmacklem error = EBADF; 3104191783Srmacklem if (!error && newnfs_numnfsd != 0) 3105191783Srmacklem error = EPERM; 3106191783Srmacklem if (!error) { 3107191783Srmacklem nfsrv_stablefirst.nsf_fp = fp; 3108191783Srmacklem nfsrv_setupstable(p); 3109191783Srmacklem } 3110191783Srmacklem } else if (uap->flag & NFSSVC_ADMINREVOKE) { 3111191783Srmacklem error = copyin(uap->argp, (caddr_t)&adminrevoke, 3112191783Srmacklem sizeof (struct nfsd_clid)); 3113191783Srmacklem if (!error) 3114191783Srmacklem error = nfsrv_adminrevoke(&adminrevoke, p); 3115191783Srmacklem } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 3116191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplist, 3117191783Srmacklem sizeof (struct nfsd_dumplist)); 3118191783Srmacklem if (!error && (dumplist.ndl_size < 1 || 3119191783Srmacklem dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 3120191783Srmacklem error = EPERM; 3121191783Srmacklem if (!error) { 3122191783Srmacklem len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 3123191783Srmacklem dumpclients = (struct nfsd_dumpclients *)malloc(len, 3124191783Srmacklem M_TEMP, M_WAITOK); 3125191783Srmacklem nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 3126191783Srmacklem error = copyout(dumpclients, 3127191783Srmacklem CAST_USER_ADDR_T(dumplist.ndl_list), len); 3128191783Srmacklem free((caddr_t)dumpclients, M_TEMP); 3129191783Srmacklem } 3130191783Srmacklem } else if (uap->flag & NFSSVC_DUMPLOCKS) { 3131191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplocklist, 3132191783Srmacklem sizeof (struct nfsd_dumplocklist)); 3133191783Srmacklem if (!error && (dumplocklist.ndllck_size < 1 || 3134191783Srmacklem dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 3135191783Srmacklem error = EPERM; 3136191783Srmacklem if (!error) 3137191783Srmacklem error = nfsrv_lookupfilename(&nd, 3138191783Srmacklem dumplocklist.ndllck_fname, p); 3139191783Srmacklem if (!error) { 3140191783Srmacklem len = sizeof (struct nfsd_dumplocks) * 3141191783Srmacklem dumplocklist.ndllck_size; 3142191783Srmacklem dumplocks = (struct nfsd_dumplocks *)malloc(len, 3143191783Srmacklem M_TEMP, M_WAITOK); 3144191783Srmacklem nfsrv_dumplocks(nd.ni_vp, dumplocks, 3145191783Srmacklem dumplocklist.ndllck_size, p); 3146191783Srmacklem vput(nd.ni_vp); 3147191783Srmacklem error = copyout(dumplocks, 3148191783Srmacklem CAST_USER_ADDR_T(dumplocklist.ndllck_list), len); 3149191783Srmacklem free((caddr_t)dumplocks, M_TEMP); 3150191783Srmacklem } 3151217432Srmacklem } else if (uap->flag & NFSSVC_BACKUPSTABLE) { 3152217432Srmacklem procp = p->td_proc; 3153217432Srmacklem PROC_LOCK(procp); 3154217432Srmacklem nfsd_master_pid = procp->p_pid; 3155217432Srmacklem bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1); 3156217432Srmacklem nfsd_master_start = procp->p_stats->p_start; 3157217432Srmacklem nfsd_master_proc = procp; 3158217432Srmacklem PROC_UNLOCK(procp); 3159191783Srmacklem } 3160224086Szack 3161224086Szack NFSEXITCODE(error); 3162191783Srmacklem return (error); 3163191783Srmacklem} 3164191783Srmacklem 3165192121Srmacklem/* 3166192121Srmacklem * Check exports. 3167192121Srmacklem * Returns 0 if ok, 1 otherwise. 3168192121Srmacklem */ 3169192121Srmacklemint 3170192121Srmacklemnfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 3171192121Srmacklem{ 3172192121Srmacklem int i; 3173192121Srmacklem 3174192121Srmacklem /* 3175192121Srmacklem * This seems odd, but allow the case where the security flavor 3176192121Srmacklem * list is empty. This happens when NFSv4 is traversing non-exported 3177192121Srmacklem * file systems. Exported file systems should always have a non-empty 3178192121Srmacklem * security flavor list. 3179192121Srmacklem */ 3180192121Srmacklem if (exp->nes_numsecflavor == 0) 3181192121Srmacklem return (0); 3182192121Srmacklem 3183192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) { 3184192121Srmacklem /* 3185192121Srmacklem * The tests for privacy and integrity must be first, 3186192121Srmacklem * since ND_GSS is set for everything but AUTH_SYS. 3187192121Srmacklem */ 3188192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 3189192121Srmacklem (nd->nd_flag & ND_GSSPRIVACY)) 3190192121Srmacklem return (0); 3191192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 3192192121Srmacklem (nd->nd_flag & ND_GSSINTEGRITY)) 3193192121Srmacklem return (0); 3194192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 3195192121Srmacklem (nd->nd_flag & ND_GSS)) 3196192121Srmacklem return (0); 3197192121Srmacklem if (exp->nes_secflavors[i] == AUTH_SYS && 3198192121Srmacklem (nd->nd_flag & ND_GSS) == 0) 3199192121Srmacklem return (0); 3200192121Srmacklem } 3201192121Srmacklem return (1); 3202192121Srmacklem} 3203192121Srmacklem 3204214224Srmacklem/* 3205214224Srmacklem * Calculate a hash value for the fid in a file handle. 3206214224Srmacklem */ 3207214255Srmacklemuint32_t 3208214224Srmacklemnfsrv_hashfh(fhandle_t *fhp) 3209214224Srmacklem{ 3210214255Srmacklem uint32_t hashval; 3211214224Srmacklem 3212214255Srmacklem hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0); 3213214224Srmacklem return (hashval); 3214214224Srmacklem} 3215214224Srmacklem 3216217432Srmacklem/* 3217217432Srmacklem * Signal the userland master nfsd to backup the stable restart file. 3218217432Srmacklem */ 3219217432Srmacklemvoid 3220217432Srmacklemnfsrv_backupstable(void) 3221217432Srmacklem{ 3222217432Srmacklem struct proc *procp; 3223217432Srmacklem 3224217432Srmacklem if (nfsd_master_proc != NULL) { 3225217432Srmacklem procp = pfind(nfsd_master_pid); 3226217432Srmacklem /* Try to make sure it is the correct process. */ 3227217432Srmacklem if (procp == nfsd_master_proc && 3228217432Srmacklem procp->p_stats->p_start.tv_sec == 3229217432Srmacklem nfsd_master_start.tv_sec && 3230217432Srmacklem procp->p_stats->p_start.tv_usec == 3231217432Srmacklem nfsd_master_start.tv_usec && 3232217432Srmacklem strcmp(procp->p_comm, nfsd_master_comm) == 0) 3233217432Srmacklem psignal(procp, SIGUSR2); 3234217432Srmacklem else 3235217432Srmacklem nfsd_master_proc = NULL; 3236217432Srmacklem 3237217432Srmacklem if (procp != NULL) 3238217432Srmacklem PROC_UNLOCK(procp); 3239217432Srmacklem } 3240217432Srmacklem} 3241217432Srmacklem 3242191783Srmacklemextern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 3243191783Srmacklem 3244191783Srmacklem/* 3245191783Srmacklem * Called once to initialize data structures... 3246191783Srmacklem */ 3247191783Srmacklemstatic int 3248191783Srmacklemnfsd_modevent(module_t mod, int type, void *data) 3249191783Srmacklem{ 3250191783Srmacklem int error = 0; 3251191783Srmacklem static int loaded = 0; 3252191783Srmacklem 3253191783Srmacklem switch (type) { 3254191783Srmacklem case MOD_LOAD: 3255191783Srmacklem if (loaded) 3256224086Szack goto out; 3257191783Srmacklem newnfs_portinit(); 3258191783Srmacklem mtx_init(&nfs_cache_mutex, "nfs_cache_mutex", NULL, MTX_DEF); 3259191783Srmacklem mtx_init(&nfs_v4root_mutex, "nfs_v4root_mutex", NULL, MTX_DEF); 3260191783Srmacklem mtx_init(&nfsv4root_mnt.mnt_mtx, "struct mount mtx", NULL, 3261191783Srmacklem MTX_DEF); 3262191783Srmacklem lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0); 3263191783Srmacklem nfsrvd_initcache(); 3264191783Srmacklem nfsd_init(); 3265191783Srmacklem NFSD_LOCK(); 3266191783Srmacklem nfsrvd_init(0); 3267191783Srmacklem NFSD_UNLOCK(); 3268191783Srmacklem nfsd_mntinit(); 3269191783Srmacklem#ifdef VV_DISABLEDELEG 3270191783Srmacklem vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 3271191783Srmacklem vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 3272191783Srmacklem#endif 3273191783Srmacklem nfsd_call_servertimer = nfsrv_servertimer; 3274191783Srmacklem nfsd_call_nfsd = nfssvc_nfsd; 3275191783Srmacklem loaded = 1; 3276191783Srmacklem break; 3277191783Srmacklem 3278191783Srmacklem case MOD_UNLOAD: 3279191783Srmacklem if (newnfs_numnfsd != 0) { 3280191783Srmacklem error = EBUSY; 3281191783Srmacklem break; 3282191783Srmacklem } 3283191783Srmacklem 3284191783Srmacklem#ifdef VV_DISABLEDELEG 3285191783Srmacklem vn_deleg_ops.vndeleg_recall = NULL; 3286191783Srmacklem vn_deleg_ops.vndeleg_disable = NULL; 3287191783Srmacklem#endif 3288191783Srmacklem nfsd_call_servertimer = NULL; 3289191783Srmacklem nfsd_call_nfsd = NULL; 3290217335Szack 3291220530Srmacklem /* Clean out all NFSv4 state. */ 3292220530Srmacklem nfsrv_throwawayallstate(curthread); 3293220530Srmacklem 3294217335Szack /* Clean the NFS server reply cache */ 3295217335Szack nfsrvd_cleancache(); 3296217335Szack 3297220530Srmacklem /* Free up the krpc server pool. */ 3298220530Srmacklem if (nfsrvd_pool != NULL) 3299220530Srmacklem svcpool_destroy(nfsrvd_pool); 3300220530Srmacklem 3301191783Srmacklem /* and get rid of the locks */ 3302191783Srmacklem mtx_destroy(&nfs_cache_mutex); 3303191783Srmacklem mtx_destroy(&nfs_v4root_mutex); 3304191783Srmacklem mtx_destroy(&nfsv4root_mnt.mnt_mtx); 3305191783Srmacklem lockdestroy(&nfsv4root_mnt.mnt_explock); 3306191783Srmacklem loaded = 0; 3307191783Srmacklem break; 3308191783Srmacklem default: 3309191783Srmacklem error = EOPNOTSUPP; 3310191783Srmacklem break; 3311191783Srmacklem } 3312224086Szack 3313224086Szackout: 3314224086Szack NFSEXITCODE(error); 3315224086Szack return (error); 3316191783Srmacklem} 3317191783Srmacklemstatic moduledata_t nfsd_mod = { 3318191783Srmacklem "nfsd", 3319191783Srmacklem nfsd_modevent, 3320191783Srmacklem NULL, 3321191783Srmacklem}; 3322191783SrmacklemDECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 3323191783Srmacklem 3324191783Srmacklem/* So that loader and kldload(2) can find us, wherever we are.. */ 3325191783SrmacklemMODULE_VERSION(nfsd, 1); 3326191783SrmacklemMODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 3327216931SrmacklemMODULE_DEPEND(nfsd, nfslock, 1, 1, 1); 3328192574SrmacklemMODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 3329209191SrmacklemMODULE_DEPEND(nfsd, krpc, 1, 1, 1); 3330209191SrmacklemMODULE_DEPEND(nfsd, nfssvc, 1, 1, 1); 3331191783Srmacklem 3332