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("$FreeBSD$"); 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; 60241561Srmacklemextern struct nfsv4lock nfsd_suspend_lock; 61191783Srmacklemstruct vfsoptlist nfsv4root_opt, nfsv4root_newopt; 62191783SrmacklemNFSDLOCKMUTEX; 63254337Srmacklemstruct nfsrchash_bucket nfsrchash_table[NFSRVCACHE_HASHSIZE]; 64254337Srmacklemstruct mtx nfsrc_udpmtx; 65191783Srmacklemstruct mtx nfs_v4root_mutex; 66191783Srmacklemstruct nfsrvfh nfs_rootfh, nfs_pubfh; 67191783Srmacklemint nfs_pubfhset = 0, nfs_rootfhset = 0; 68217432Srmacklemstruct proc *nfsd_master_proc = NULL; 69217432Srmacklemstatic pid_t nfsd_master_pid = (pid_t)-1; 70217432Srmacklemstatic char nfsd_master_comm[MAXCOMLEN + 1]; 71217432Srmacklemstatic struct timeval nfsd_master_start; 72192503Srmacklemstatic uint32_t nfsv4_sysid = 0; 73191783Srmacklem 74192255Srmacklemstatic int nfssvc_srvcall(struct thread *, struct nfssvc_args *, 75192255Srmacklem struct ucred *); 76191783Srmacklem 77220645Srmacklemint nfsrv_enable_crossmntpt = 1; 78191783Srmacklemstatic int nfs_commit_blks; 79191783Srmacklemstatic int nfs_commit_miss; 80191783Srmacklemextern int nfsrv_issuedelegs; 81192255Srmacklemextern int nfsrv_dolocallocks; 82192255Srmacklem 83221615SrmacklemSYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW, 0, "New NFS server"); 84221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, mirrormnt, CTLFLAG_RW, 85220645Srmacklem &nfsrv_enable_crossmntpt, 0, "Enable nfsd to cross mount points"); 86221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 87192255Srmacklem 0, ""); 88221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 89192255Srmacklem 0, ""); 90221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, issue_delegations, CTLFLAG_RW, 91192255Srmacklem &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); 92221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_locallocks, CTLFLAG_RW, 93192255Srmacklem &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files"); 94191783Srmacklem 95228185Sjhb#define MAX_REORDERED_RPC 16 96228185Sjhb#define NUM_HEURISTIC 1031 97191783Srmacklem#define NHUSE_INIT 64 98191783Srmacklem#define NHUSE_INC 16 99191783Srmacklem#define NHUSE_MAX 2048 100191783Srmacklem 101191783Srmacklemstatic struct nfsheur { 102191783Srmacklem struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 103228185Sjhb off_t nh_nextoff; /* next offset for sequential detection */ 104191783Srmacklem int nh_use; /* use count for selection */ 105191783Srmacklem int nh_seqcount; /* heuristic */ 106191783Srmacklem} nfsheur[NUM_HEURISTIC]; 107191783Srmacklem 108191783Srmacklem 109191783Srmacklem/* 110228185Sjhb * Heuristic to detect sequential operation. 111228185Sjhb */ 112228185Sjhbstatic struct nfsheur * 113228185Sjhbnfsrv_sequential_heuristic(struct uio *uio, struct vnode *vp) 114228185Sjhb{ 115228185Sjhb struct nfsheur *nh; 116228185Sjhb int hi, try; 117228185Sjhb 118228185Sjhb /* Locate best candidate. */ 119228185Sjhb try = 32; 120228185Sjhb hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 121228185Sjhb nh = &nfsheur[hi]; 122228185Sjhb while (try--) { 123228185Sjhb if (nfsheur[hi].nh_vp == vp) { 124228185Sjhb nh = &nfsheur[hi]; 125228185Sjhb break; 126228185Sjhb } 127228185Sjhb if (nfsheur[hi].nh_use > 0) 128228185Sjhb --nfsheur[hi].nh_use; 129228185Sjhb hi = (hi + 1) % NUM_HEURISTIC; 130228185Sjhb if (nfsheur[hi].nh_use < nh->nh_use) 131228185Sjhb nh = &nfsheur[hi]; 132228185Sjhb } 133228185Sjhb 134228185Sjhb /* Initialize hint if this is a new file. */ 135228185Sjhb if (nh->nh_vp != vp) { 136228185Sjhb nh->nh_vp = vp; 137228185Sjhb nh->nh_nextoff = uio->uio_offset; 138228185Sjhb nh->nh_use = NHUSE_INIT; 139228185Sjhb if (uio->uio_offset == 0) 140228185Sjhb nh->nh_seqcount = 4; 141228185Sjhb else 142228185Sjhb nh->nh_seqcount = 1; 143228185Sjhb } 144228185Sjhb 145228185Sjhb /* Calculate heuristic. */ 146228185Sjhb if ((uio->uio_offset == 0 && nh->nh_seqcount > 0) || 147228185Sjhb uio->uio_offset == nh->nh_nextoff) { 148228185Sjhb /* See comments in vfs_vnops.c:sequential_heuristic(). */ 149228185Sjhb nh->nh_seqcount += howmany(uio->uio_resid, 16384); 150228185Sjhb if (nh->nh_seqcount > IO_SEQMAX) 151228185Sjhb nh->nh_seqcount = IO_SEQMAX; 152228185Sjhb } else if (qabs(uio->uio_offset - nh->nh_nextoff) <= MAX_REORDERED_RPC * 153228185Sjhb imax(vp->v_mount->mnt_stat.f_iosize, uio->uio_resid)) { 154228185Sjhb /* Probably a reordered RPC, leave seqcount alone. */ 155228185Sjhb } else if (nh->nh_seqcount > 1) { 156228185Sjhb nh->nh_seqcount /= 2; 157228185Sjhb } else { 158228185Sjhb nh->nh_seqcount = 0; 159228185Sjhb } 160228185Sjhb nh->nh_use += NHUSE_INC; 161228185Sjhb if (nh->nh_use > NHUSE_MAX) 162228185Sjhb nh->nh_use = NHUSE_MAX; 163228185Sjhb return (nh); 164228185Sjhb} 165228185Sjhb 166228185Sjhb/* 167191783Srmacklem * Get attributes into nfsvattr structure. 168191783Srmacklem */ 169191783Srmacklemint 170191783Srmacklemnfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 171216693Srmacklem struct thread *p, int vpislocked) 172191783Srmacklem{ 173191783Srmacklem int error, lockedit = 0; 174191783Srmacklem 175216693Srmacklem if (vpislocked == 0) { 176216693Srmacklem /* 177216693Srmacklem * When vpislocked == 0, the vnode is either exclusively 178216693Srmacklem * locked by this thread or not locked by this thread. 179216693Srmacklem * As such, shared lock it, if not exclusively locked. 180216693Srmacklem */ 181224083Szack if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { 182216693Srmacklem lockedit = 1; 183224081Szack NFSVOPLOCK(vp, LK_SHARED | LK_RETRY); 184216693Srmacklem } 185191783Srmacklem } 186191783Srmacklem error = VOP_GETATTR(vp, &nvap->na_vattr, cred); 187216693Srmacklem if (lockedit != 0) 188224082Szack NFSVOPUNLOCK(vp, 0); 189224086Szack 190224086Szack NFSEXITCODE(error); 191191783Srmacklem return (error); 192191783Srmacklem} 193191783Srmacklem 194191783Srmacklem/* 195191783Srmacklem * Get a file handle for a vnode. 196191783Srmacklem */ 197191783Srmacklemint 198191783Srmacklemnfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 199191783Srmacklem{ 200191783Srmacklem int error; 201191783Srmacklem 202191783Srmacklem NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 203191783Srmacklem fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 204191783Srmacklem error = VOP_VPTOFH(vp, &fhp->fh_fid); 205224086Szack 206224086Szack NFSEXITCODE(error); 207191783Srmacklem return (error); 208191783Srmacklem} 209191783Srmacklem 210191783Srmacklem/* 211191783Srmacklem * Perform access checking for vnodes obtained from file handles that would 212191783Srmacklem * refer to files already opened by a Unix client. You cannot just use 213200999Srmacklem * vn_writechk() and VOP_ACCESSX() for two reasons. 214200999Srmacklem * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write 215200999Srmacklem * case. 216191783Srmacklem * 2 - The owner is to be given access irrespective of mode bits for some 217191783Srmacklem * operations, so that processes that chmod after opening a file don't 218191783Srmacklem * break. 219191783Srmacklem */ 220191783Srmacklemint 221200999Srmacklemnfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred, 222200999Srmacklem struct nfsexstuff *exp, struct thread *p, int override, int vpislocked, 223200999Srmacklem u_int32_t *supportedtypep) 224191783Srmacklem{ 225191783Srmacklem struct vattr vattr; 226191783Srmacklem int error = 0, getret = 0; 227191783Srmacklem 228216893Srmacklem if (vpislocked == 0) { 229224086Szack if (NFSVOPLOCK(vp, LK_SHARED) != 0) { 230224086Szack error = EPERM; 231224086Szack goto out; 232224086Szack } 233216893Srmacklem } 234191783Srmacklem if (accmode & VWRITE) { 235191783Srmacklem /* Just vn_writechk() changed to check rdonly */ 236191783Srmacklem /* 237191783Srmacklem * Disallow write attempts on read-only file systems; 238191783Srmacklem * unless the file is a socket or a block or character 239191783Srmacklem * device resident on the file system. 240191783Srmacklem */ 241191783Srmacklem if (NFSVNO_EXRDONLY(exp) || 242200999Srmacklem (vp->v_mount->mnt_flag & MNT_RDONLY)) { 243191783Srmacklem switch (vp->v_type) { 244191783Srmacklem case VREG: 245191783Srmacklem case VDIR: 246191783Srmacklem case VLNK: 247216893Srmacklem error = EROFS; 248191783Srmacklem default: 249191783Srmacklem break; 250191783Srmacklem } 251191783Srmacklem } 252191783Srmacklem /* 253191783Srmacklem * If there's shared text associated with 254191783Srmacklem * the inode, try to free it up once. If 255191783Srmacklem * we fail, we can't allow writing. 256191783Srmacklem */ 257241025Skib if (VOP_IS_TEXT(vp) && error == 0) 258216893Srmacklem error = ETXTBSY; 259191783Srmacklem } 260216893Srmacklem if (error != 0) { 261216893Srmacklem if (vpislocked == 0) 262224082Szack NFSVOPUNLOCK(vp, 0); 263224086Szack goto out; 264216893Srmacklem } 265191783Srmacklem 266191783Srmacklem /* 267191783Srmacklem * Should the override still be applied when ACLs are enabled? 268191783Srmacklem */ 269200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 270200999Srmacklem if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) { 271200999Srmacklem /* 272200999Srmacklem * Try again with VEXPLICIT_DENY, to see if the test for 273200999Srmacklem * deletion is supported. 274200999Srmacklem */ 275200999Srmacklem error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p); 276200999Srmacklem if (error == 0) { 277200999Srmacklem if (vp->v_type == VDIR) { 278200999Srmacklem accmode &= ~(VDELETE | VDELETE_CHILD); 279200999Srmacklem accmode |= VWRITE; 280200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 281200999Srmacklem } else if (supportedtypep != NULL) { 282200999Srmacklem *supportedtypep &= ~NFSACCESS_DELETE; 283200999Srmacklem } 284200999Srmacklem } 285200999Srmacklem } 286191783Srmacklem 287191783Srmacklem /* 288191783Srmacklem * Allow certain operations for the owner (reads and writes 289191783Srmacklem * on files that are already open). 290191783Srmacklem */ 291191783Srmacklem if (override != NFSACCCHK_NOOVERRIDE && 292191783Srmacklem (error == EPERM || error == EACCES)) { 293191783Srmacklem if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 294191783Srmacklem error = 0; 295191783Srmacklem else if (override & NFSACCCHK_ALLOWOWNER) { 296191783Srmacklem getret = VOP_GETATTR(vp, &vattr, cred); 297191783Srmacklem if (getret == 0 && cred->cr_uid == vattr.va_uid) 298191783Srmacklem error = 0; 299191783Srmacklem } 300191783Srmacklem } 301191783Srmacklem if (vpislocked == 0) 302224082Szack NFSVOPUNLOCK(vp, 0); 303224086Szack 304224086Szackout: 305224086Szack NFSEXITCODE(error); 306191783Srmacklem return (error); 307191783Srmacklem} 308191783Srmacklem 309191783Srmacklem/* 310191783Srmacklem * Set attribute(s) vnop. 311191783Srmacklem */ 312191783Srmacklemint 313191783Srmacklemnfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 314191783Srmacklem struct thread *p, struct nfsexstuff *exp) 315191783Srmacklem{ 316191783Srmacklem int error; 317191783Srmacklem 318191783Srmacklem error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 319224086Szack NFSEXITCODE(error); 320191783Srmacklem return (error); 321191783Srmacklem} 322191783Srmacklem 323191783Srmacklem/* 324231805Srmacklem * Set up nameidata for a lookup() call and do it. 325191783Srmacklem */ 326191783Srmacklemint 327191783Srmacklemnfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 328191783Srmacklem struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p, 329191783Srmacklem struct vnode **retdirp) 330191783Srmacklem{ 331191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 332191783Srmacklem int i; 333191783Srmacklem struct iovec aiov; 334191783Srmacklem struct uio auio; 335191783Srmacklem int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 336191783Srmacklem int error = 0, crossmnt; 337191783Srmacklem char *cp; 338191783Srmacklem 339191783Srmacklem *retdirp = NULL; 340191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 341225356Srmacklem ndp->ni_strictrelative = 0; 342191783Srmacklem /* 343191783Srmacklem * Extract and set starting directory. 344191783Srmacklem */ 345191783Srmacklem if (dp->v_type != VDIR) { 346191783Srmacklem if (islocked) 347191783Srmacklem vput(dp); 348191783Srmacklem else 349191783Srmacklem vrele(dp); 350191783Srmacklem nfsvno_relpathbuf(ndp); 351224086Szack error = ENOTDIR; 352224086Szack goto out1; 353191783Srmacklem } 354191783Srmacklem if (islocked) 355224080Szack NFSVOPUNLOCK(dp, 0); 356191783Srmacklem VREF(dp); 357191783Srmacklem *retdirp = dp; 358191783Srmacklem if (NFSVNO_EXRDONLY(exp)) 359191783Srmacklem cnp->cn_flags |= RDONLY; 360191783Srmacklem ndp->ni_segflg = UIO_SYSSPACE; 361191783Srmacklem crossmnt = 1; 362191783Srmacklem 363191783Srmacklem if (nd->nd_flag & ND_PUBLOOKUP) { 364191783Srmacklem ndp->ni_loopcnt = 0; 365191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 366191783Srmacklem vrele(dp); 367191783Srmacklem /* 368191783Srmacklem * Check for degenerate pathnames here, since lookup() 369191783Srmacklem * panics on them. 370191783Srmacklem */ 371191783Srmacklem for (i = 1; i < ndp->ni_pathlen; i++) 372191783Srmacklem if (cnp->cn_pnbuf[i] != '/') 373191783Srmacklem break; 374191783Srmacklem if (i == ndp->ni_pathlen) { 375191783Srmacklem error = NFSERR_ACCES; 376191783Srmacklem goto out; 377191783Srmacklem } 378191783Srmacklem dp = rootvnode; 379191783Srmacklem VREF(dp); 380191783Srmacklem } 381220645Srmacklem } else if ((nfsrv_enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 382191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) { 383191783Srmacklem /* 384191783Srmacklem * Only cross mount points for NFSv4 when doing a 385191783Srmacklem * mount while traversing the file system above 386220645Srmacklem * the mount point, unless nfsrv_enable_crossmntpt is set. 387191783Srmacklem */ 388191783Srmacklem cnp->cn_flags |= NOCROSSMOUNT; 389191783Srmacklem crossmnt = 0; 390191783Srmacklem } 391191783Srmacklem 392191783Srmacklem /* 393191783Srmacklem * Initialize for scan, set ni_startdir and bump ref on dp again 394250657Sdes * because lookup() will dereference ni_startdir. 395191783Srmacklem */ 396191783Srmacklem 397191783Srmacklem cnp->cn_thread = p; 398191783Srmacklem ndp->ni_startdir = dp; 399191783Srmacklem ndp->ni_rootdir = rootvnode; 400232467Srmacklem ndp->ni_topdir = NULL; 401191783Srmacklem 402191783Srmacklem if (!lockleaf) 403191783Srmacklem cnp->cn_flags |= LOCKLEAF; 404191783Srmacklem for (;;) { 405191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 406191783Srmacklem /* 407191783Srmacklem * Call lookup() to do the real work. If an error occurs, 408191783Srmacklem * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 409191783Srmacklem * we do not have to dereference anything before returning. 410191783Srmacklem * In either case ni_startdir will be dereferenced and NULLed 411191783Srmacklem * out. 412191783Srmacklem */ 413191783Srmacklem error = lookup(ndp); 414191783Srmacklem if (error) 415191783Srmacklem break; 416191783Srmacklem 417191783Srmacklem /* 418191783Srmacklem * Check for encountering a symbolic link. Trivial 419191783Srmacklem * termination occurs if no symlink encountered. 420191783Srmacklem */ 421191783Srmacklem if ((cnp->cn_flags & ISSYMLINK) == 0) { 422191783Srmacklem if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0) 423191783Srmacklem nfsvno_relpathbuf(ndp); 424191783Srmacklem if (ndp->ni_vp && !lockleaf) 425224080Szack NFSVOPUNLOCK(ndp->ni_vp, 0); 426191783Srmacklem break; 427191783Srmacklem } 428191783Srmacklem 429191783Srmacklem /* 430191783Srmacklem * Validate symlink 431191783Srmacklem */ 432191783Srmacklem if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 433224080Szack NFSVOPUNLOCK(ndp->ni_dvp, 0); 434191783Srmacklem if (!(nd->nd_flag & ND_PUBLOOKUP)) { 435191783Srmacklem error = EINVAL; 436191783Srmacklem goto badlink2; 437191783Srmacklem } 438191783Srmacklem 439191783Srmacklem if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 440191783Srmacklem error = ELOOP; 441191783Srmacklem goto badlink2; 442191783Srmacklem } 443191783Srmacklem if (ndp->ni_pathlen > 1) 444191783Srmacklem cp = uma_zalloc(namei_zone, M_WAITOK); 445191783Srmacklem else 446191783Srmacklem cp = cnp->cn_pnbuf; 447191783Srmacklem aiov.iov_base = cp; 448191783Srmacklem aiov.iov_len = MAXPATHLEN; 449191783Srmacklem auio.uio_iov = &aiov; 450191783Srmacklem auio.uio_iovcnt = 1; 451191783Srmacklem auio.uio_offset = 0; 452191783Srmacklem auio.uio_rw = UIO_READ; 453191783Srmacklem auio.uio_segflg = UIO_SYSSPACE; 454191783Srmacklem auio.uio_td = NULL; 455191783Srmacklem auio.uio_resid = MAXPATHLEN; 456191783Srmacklem error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 457191783Srmacklem if (error) { 458191783Srmacklem badlink1: 459191783Srmacklem if (ndp->ni_pathlen > 1) 460191783Srmacklem uma_zfree(namei_zone, cp); 461191783Srmacklem badlink2: 462191783Srmacklem vrele(ndp->ni_dvp); 463191783Srmacklem vput(ndp->ni_vp); 464191783Srmacklem break; 465191783Srmacklem } 466191783Srmacklem linklen = MAXPATHLEN - auio.uio_resid; 467191783Srmacklem if (linklen == 0) { 468191783Srmacklem error = ENOENT; 469191783Srmacklem goto badlink1; 470191783Srmacklem } 471191783Srmacklem if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 472191783Srmacklem error = ENAMETOOLONG; 473191783Srmacklem goto badlink1; 474191783Srmacklem } 475191783Srmacklem 476191783Srmacklem /* 477191783Srmacklem * Adjust or replace path 478191783Srmacklem */ 479191783Srmacklem if (ndp->ni_pathlen > 1) { 480191783Srmacklem NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 481191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 482191783Srmacklem cnp->cn_pnbuf = cp; 483191783Srmacklem } else 484191783Srmacklem cnp->cn_pnbuf[linklen] = '\0'; 485191783Srmacklem ndp->ni_pathlen += linklen; 486191783Srmacklem 487191783Srmacklem /* 488191783Srmacklem * Cleanup refs for next loop and check if root directory 489191783Srmacklem * should replace current directory. Normally ni_dvp 490191783Srmacklem * becomes the new base directory and is cleaned up when 491191783Srmacklem * we loop. Explicitly null pointers after invalidation 492191783Srmacklem * to clarify operation. 493191783Srmacklem */ 494191783Srmacklem vput(ndp->ni_vp); 495191783Srmacklem ndp->ni_vp = NULL; 496191783Srmacklem 497191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 498191783Srmacklem vrele(ndp->ni_dvp); 499191783Srmacklem ndp->ni_dvp = ndp->ni_rootdir; 500191783Srmacklem VREF(ndp->ni_dvp); 501191783Srmacklem } 502191783Srmacklem ndp->ni_startdir = ndp->ni_dvp; 503191783Srmacklem ndp->ni_dvp = NULL; 504191783Srmacklem } 505191783Srmacklem if (!lockleaf) 506191783Srmacklem cnp->cn_flags &= ~LOCKLEAF; 507191783Srmacklem 508191783Srmacklemout: 509191783Srmacklem if (error) { 510235136Sjwd nfsvno_relpathbuf(ndp); 511191783Srmacklem ndp->ni_vp = NULL; 512191783Srmacklem ndp->ni_dvp = NULL; 513191783Srmacklem ndp->ni_startdir = NULL; 514191783Srmacklem } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 515191783Srmacklem ndp->ni_dvp = NULL; 516191783Srmacklem } 517224086Szack 518224086Szackout1: 519224086Szack NFSEXITCODE2(error, nd); 520191783Srmacklem return (error); 521191783Srmacklem} 522191783Srmacklem 523191783Srmacklem/* 524191783Srmacklem * Set up a pathname buffer and return a pointer to it and, optionally 525191783Srmacklem * set a hash pointer. 526191783Srmacklem */ 527191783Srmacklemvoid 528191783Srmacklemnfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 529191783Srmacklem{ 530191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 531191783Srmacklem 532191783Srmacklem cnp->cn_flags |= (NOMACCHECK | HASBUF); 533191783Srmacklem cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 534191783Srmacklem if (hashpp != NULL) 535191783Srmacklem *hashpp = NULL; 536191783Srmacklem *bufpp = cnp->cn_pnbuf; 537191783Srmacklem} 538191783Srmacklem 539191783Srmacklem/* 540191783Srmacklem * Release the above path buffer, if not released by nfsvno_namei(). 541191783Srmacklem */ 542191783Srmacklemvoid 543191783Srmacklemnfsvno_relpathbuf(struct nameidata *ndp) 544191783Srmacklem{ 545191783Srmacklem 546191783Srmacklem if ((ndp->ni_cnd.cn_flags & HASBUF) == 0) 547191783Srmacklem panic("nfsrelpath"); 548191783Srmacklem uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 549191783Srmacklem ndp->ni_cnd.cn_flags &= ~HASBUF; 550191783Srmacklem} 551191783Srmacklem 552191783Srmacklem/* 553191783Srmacklem * Readlink vnode op into an mbuf list. 554191783Srmacklem */ 555191783Srmacklemint 556191783Srmacklemnfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p, 557191783Srmacklem struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 558191783Srmacklem{ 559191783Srmacklem struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; 560191783Srmacklem struct iovec *ivp = iv; 561191783Srmacklem struct uio io, *uiop = &io; 562191783Srmacklem struct mbuf *mp, *mp2 = NULL, *mp3 = NULL; 563224086Szack int i, len, tlen, error = 0; 564191783Srmacklem 565191783Srmacklem len = 0; 566191783Srmacklem i = 0; 567191783Srmacklem while (len < NFS_MAXPATHLEN) { 568191783Srmacklem NFSMGET(mp); 569243882Sglebius MCLGET(mp, M_WAITOK); 570191783Srmacklem mp->m_len = NFSMSIZ(mp); 571191783Srmacklem if (len == 0) { 572191783Srmacklem mp3 = mp2 = mp; 573191783Srmacklem } else { 574191783Srmacklem mp2->m_next = mp; 575191783Srmacklem mp2 = mp; 576191783Srmacklem } 577191783Srmacklem if ((len + mp->m_len) > NFS_MAXPATHLEN) { 578191783Srmacklem mp->m_len = NFS_MAXPATHLEN - len; 579191783Srmacklem len = NFS_MAXPATHLEN; 580191783Srmacklem } else { 581191783Srmacklem len += mp->m_len; 582191783Srmacklem } 583191783Srmacklem ivp->iov_base = mtod(mp, caddr_t); 584191783Srmacklem ivp->iov_len = mp->m_len; 585191783Srmacklem i++; 586191783Srmacklem ivp++; 587191783Srmacklem } 588191783Srmacklem uiop->uio_iov = iv; 589191783Srmacklem uiop->uio_iovcnt = i; 590191783Srmacklem uiop->uio_offset = 0; 591191783Srmacklem uiop->uio_resid = len; 592191783Srmacklem uiop->uio_rw = UIO_READ; 593191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 594191783Srmacklem uiop->uio_td = NULL; 595191783Srmacklem error = VOP_READLINK(vp, uiop, cred); 596191783Srmacklem if (error) { 597191783Srmacklem m_freem(mp3); 598191783Srmacklem *lenp = 0; 599224086Szack goto out; 600191783Srmacklem } 601191783Srmacklem if (uiop->uio_resid > 0) { 602191783Srmacklem len -= uiop->uio_resid; 603191783Srmacklem tlen = NFSM_RNDUP(len); 604191783Srmacklem nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len); 605191783Srmacklem } 606191783Srmacklem *lenp = len; 607191783Srmacklem *mpp = mp3; 608191783Srmacklem *mpendp = mp; 609224086Szack 610224086Szackout: 611224086Szack NFSEXITCODE(error); 612224086Szack return (error); 613191783Srmacklem} 614191783Srmacklem 615191783Srmacklem/* 616191783Srmacklem * Read vnode op call into mbuf list. 617191783Srmacklem */ 618191783Srmacklemint 619191783Srmacklemnfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 620191783Srmacklem struct thread *p, struct mbuf **mpp, struct mbuf **mpendp) 621191783Srmacklem{ 622191783Srmacklem struct mbuf *m; 623191783Srmacklem int i; 624191783Srmacklem struct iovec *iv; 625191783Srmacklem struct iovec *iv2; 626228185Sjhb int error = 0, len, left, siz, tlen, ioflag = 0; 627191783Srmacklem struct mbuf *m2 = NULL, *m3; 628191783Srmacklem struct uio io, *uiop = &io; 629191783Srmacklem struct nfsheur *nh; 630191783Srmacklem 631191783Srmacklem len = left = NFSM_RNDUP(cnt); 632191783Srmacklem m3 = NULL; 633191783Srmacklem /* 634191783Srmacklem * Generate the mbuf list with the uio_iov ref. to it. 635191783Srmacklem */ 636191783Srmacklem i = 0; 637191783Srmacklem while (left > 0) { 638191783Srmacklem NFSMGET(m); 639243882Sglebius MCLGET(m, M_WAITOK); 640191783Srmacklem m->m_len = 0; 641191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 642191783Srmacklem left -= siz; 643191783Srmacklem i++; 644191783Srmacklem if (m3) 645191783Srmacklem m2->m_next = m; 646191783Srmacklem else 647191783Srmacklem m3 = m; 648191783Srmacklem m2 = m; 649191783Srmacklem } 650191783Srmacklem MALLOC(iv, struct iovec *, i * sizeof (struct iovec), 651191783Srmacklem M_TEMP, M_WAITOK); 652191783Srmacklem uiop->uio_iov = iv2 = iv; 653191783Srmacklem m = m3; 654191783Srmacklem left = len; 655191783Srmacklem i = 0; 656191783Srmacklem while (left > 0) { 657191783Srmacklem if (m == NULL) 658191783Srmacklem panic("nfsvno_read iov"); 659191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 660191783Srmacklem if (siz > 0) { 661191783Srmacklem iv->iov_base = mtod(m, caddr_t) + m->m_len; 662191783Srmacklem iv->iov_len = siz; 663191783Srmacklem m->m_len += siz; 664191783Srmacklem left -= siz; 665191783Srmacklem iv++; 666191783Srmacklem i++; 667191783Srmacklem } 668191783Srmacklem m = m->m_next; 669191783Srmacklem } 670191783Srmacklem uiop->uio_iovcnt = i; 671191783Srmacklem uiop->uio_offset = off; 672191783Srmacklem uiop->uio_resid = len; 673191783Srmacklem uiop->uio_rw = UIO_READ; 674191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 675228185Sjhb nh = nfsrv_sequential_heuristic(uiop, vp); 676228185Sjhb ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 677191783Srmacklem error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 678191783Srmacklem FREE((caddr_t)iv2, M_TEMP); 679191783Srmacklem if (error) { 680191783Srmacklem m_freem(m3); 681191783Srmacklem *mpp = NULL; 682224086Szack goto out; 683191783Srmacklem } 684228185Sjhb nh->nh_nextoff = uiop->uio_offset; 685191783Srmacklem tlen = len - uiop->uio_resid; 686191783Srmacklem cnt = cnt < tlen ? cnt : tlen; 687191783Srmacklem tlen = NFSM_RNDUP(cnt); 688191783Srmacklem if (tlen == 0) { 689191783Srmacklem m_freem(m3); 690191783Srmacklem m3 = NULL; 691191783Srmacklem } else if (len != tlen || tlen != cnt) 692191783Srmacklem nfsrv_adj(m3, len - tlen, tlen - cnt); 693191783Srmacklem *mpp = m3; 694191783Srmacklem *mpendp = m2; 695224086Szack 696224086Szackout: 697224086Szack NFSEXITCODE(error); 698224086Szack return (error); 699191783Srmacklem} 700191783Srmacklem 701191783Srmacklem/* 702191783Srmacklem * Write vnode op from an mbuf list. 703191783Srmacklem */ 704191783Srmacklemint 705191783Srmacklemnfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable, 706191783Srmacklem struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 707191783Srmacklem{ 708191783Srmacklem struct iovec *ivp; 709191783Srmacklem int i, len; 710191783Srmacklem struct iovec *iv; 711191783Srmacklem int ioflags, error; 712191783Srmacklem struct uio io, *uiop = &io; 713228185Sjhb struct nfsheur *nh; 714191783Srmacklem 715191783Srmacklem MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP, 716191783Srmacklem M_WAITOK); 717191783Srmacklem uiop->uio_iov = iv = ivp; 718191783Srmacklem uiop->uio_iovcnt = cnt; 719191783Srmacklem i = mtod(mp, caddr_t) + mp->m_len - cp; 720191783Srmacklem len = retlen; 721191783Srmacklem while (len > 0) { 722191783Srmacklem if (mp == NULL) 723191783Srmacklem panic("nfsvno_write"); 724191783Srmacklem if (i > 0) { 725191783Srmacklem i = min(i, len); 726191783Srmacklem ivp->iov_base = cp; 727191783Srmacklem ivp->iov_len = i; 728191783Srmacklem ivp++; 729191783Srmacklem len -= i; 730191783Srmacklem } 731191783Srmacklem mp = mp->m_next; 732191783Srmacklem if (mp) { 733191783Srmacklem i = mp->m_len; 734191783Srmacklem cp = mtod(mp, caddr_t); 735191783Srmacklem } 736191783Srmacklem } 737191783Srmacklem 738191783Srmacklem if (stable == NFSWRITE_UNSTABLE) 739191783Srmacklem ioflags = IO_NODELOCKED; 740191783Srmacklem else 741191783Srmacklem ioflags = (IO_SYNC | IO_NODELOCKED); 742191783Srmacklem uiop->uio_resid = retlen; 743191783Srmacklem uiop->uio_rw = UIO_WRITE; 744191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 745191783Srmacklem NFSUIOPROC(uiop, p); 746191783Srmacklem uiop->uio_offset = off; 747228185Sjhb nh = nfsrv_sequential_heuristic(uiop, vp); 748228185Sjhb ioflags |= nh->nh_seqcount << IO_SEQSHIFT; 749191783Srmacklem error = VOP_WRITE(vp, uiop, ioflags, cred); 750228185Sjhb if (error == 0) 751228185Sjhb nh->nh_nextoff = uiop->uio_offset; 752191783Srmacklem FREE((caddr_t)iv, M_TEMP); 753224086Szack 754224086Szack NFSEXITCODE(error); 755191783Srmacklem return (error); 756191783Srmacklem} 757191783Srmacklem 758191783Srmacklem/* 759191783Srmacklem * Common code for creating a regular file (plus special files for V2). 760191783Srmacklem */ 761191783Srmacklemint 762191783Srmacklemnfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 763191783Srmacklem struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 764199616Srmacklem int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp) 765191783Srmacklem{ 766191783Srmacklem u_quad_t tempsize; 767191783Srmacklem int error; 768191783Srmacklem 769191783Srmacklem error = nd->nd_repstat; 770191783Srmacklem if (!error && ndp->ni_vp == NULL) { 771191783Srmacklem if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 772191783Srmacklem vrele(ndp->ni_startdir); 773191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, 774191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 775191783Srmacklem vput(ndp->ni_dvp); 776191783Srmacklem nfsvno_relpathbuf(ndp); 777191783Srmacklem if (!error) { 778191783Srmacklem if (*exclusive_flagp) { 779191783Srmacklem *exclusive_flagp = 0; 780191783Srmacklem NFSVNO_ATTRINIT(nvap); 781199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 782199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 783191783Srmacklem error = VOP_SETATTR(ndp->ni_vp, 784191783Srmacklem &nvap->na_vattr, nd->nd_cred); 785191783Srmacklem } 786191783Srmacklem } 787191783Srmacklem /* 788191783Srmacklem * NFS V2 Only. nfsrvd_mknod() does this for V3. 789191783Srmacklem * (This implies, just get out on an error.) 790191783Srmacklem */ 791191783Srmacklem } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 792191783Srmacklem nvap->na_type == VFIFO) { 793191783Srmacklem if (nvap->na_type == VCHR && rdev == 0xffffffff) 794191783Srmacklem nvap->na_type = VFIFO; 795191783Srmacklem if (nvap->na_type != VFIFO && 796191783Srmacklem (error = priv_check_cred(nd->nd_cred, 797191783Srmacklem PRIV_VFS_MKNOD_DEV, 0))) { 798191783Srmacklem vrele(ndp->ni_startdir); 799191783Srmacklem nfsvno_relpathbuf(ndp); 800191783Srmacklem vput(ndp->ni_dvp); 801224086Szack goto out; 802191783Srmacklem } 803191783Srmacklem nvap->na_rdev = rdev; 804191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 805191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 806191783Srmacklem vput(ndp->ni_dvp); 807191783Srmacklem nfsvno_relpathbuf(ndp); 808220546Srmacklem vrele(ndp->ni_startdir); 809220546Srmacklem if (error) 810224086Szack goto out; 811191783Srmacklem } else { 812191783Srmacklem vrele(ndp->ni_startdir); 813191783Srmacklem nfsvno_relpathbuf(ndp); 814191783Srmacklem vput(ndp->ni_dvp); 815224086Szack error = ENXIO; 816224086Szack goto out; 817191783Srmacklem } 818191783Srmacklem *vpp = ndp->ni_vp; 819191783Srmacklem } else { 820191783Srmacklem /* 821191783Srmacklem * Handle cases where error is already set and/or 822191783Srmacklem * the file exists. 823191783Srmacklem * 1 - clean up the lookup 824191783Srmacklem * 2 - iff !error and na_size set, truncate it 825191783Srmacklem */ 826191783Srmacklem vrele(ndp->ni_startdir); 827191783Srmacklem nfsvno_relpathbuf(ndp); 828191783Srmacklem *vpp = ndp->ni_vp; 829191783Srmacklem if (ndp->ni_dvp == *vpp) 830191783Srmacklem vrele(ndp->ni_dvp); 831191783Srmacklem else 832191783Srmacklem vput(ndp->ni_dvp); 833191783Srmacklem if (!error && nvap->na_size != VNOVAL) { 834200999Srmacklem error = nfsvno_accchk(*vpp, VWRITE, 835191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 836200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 837191783Srmacklem if (!error) { 838191783Srmacklem tempsize = nvap->na_size; 839191783Srmacklem NFSVNO_ATTRINIT(nvap); 840191783Srmacklem nvap->na_size = tempsize; 841191783Srmacklem error = VOP_SETATTR(*vpp, 842191783Srmacklem &nvap->na_vattr, nd->nd_cred); 843191783Srmacklem } 844191783Srmacklem } 845191783Srmacklem if (error) 846191783Srmacklem vput(*vpp); 847191783Srmacklem } 848224086Szack 849224086Szackout: 850224086Szack NFSEXITCODE(error); 851191783Srmacklem return (error); 852191783Srmacklem} 853191783Srmacklem 854191783Srmacklem/* 855191783Srmacklem * Do a mknod vnode op. 856191783Srmacklem */ 857191783Srmacklemint 858191783Srmacklemnfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, 859191783Srmacklem struct thread *p) 860191783Srmacklem{ 861191783Srmacklem int error = 0; 862191783Srmacklem enum vtype vtyp; 863191783Srmacklem 864191783Srmacklem vtyp = nvap->na_type; 865191783Srmacklem /* 866191783Srmacklem * Iff doesn't exist, create it. 867191783Srmacklem */ 868191783Srmacklem if (ndp->ni_vp) { 869191783Srmacklem vrele(ndp->ni_startdir); 870191783Srmacklem nfsvno_relpathbuf(ndp); 871191783Srmacklem vput(ndp->ni_dvp); 872191783Srmacklem vrele(ndp->ni_vp); 873224086Szack error = EEXIST; 874224086Szack goto out; 875191783Srmacklem } 876191783Srmacklem if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { 877191783Srmacklem vrele(ndp->ni_startdir); 878191783Srmacklem nfsvno_relpathbuf(ndp); 879191783Srmacklem vput(ndp->ni_dvp); 880224086Szack error = NFSERR_BADTYPE; 881224086Szack goto out; 882191783Srmacklem } 883191783Srmacklem if (vtyp == VSOCK) { 884191783Srmacklem vrele(ndp->ni_startdir); 885191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, 886191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 887191783Srmacklem vput(ndp->ni_dvp); 888191783Srmacklem nfsvno_relpathbuf(ndp); 889191783Srmacklem } else { 890191783Srmacklem if (nvap->na_type != VFIFO && 891191783Srmacklem (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) { 892191783Srmacklem vrele(ndp->ni_startdir); 893191783Srmacklem nfsvno_relpathbuf(ndp); 894191783Srmacklem vput(ndp->ni_dvp); 895224086Szack goto out; 896191783Srmacklem } 897191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 898191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 899191783Srmacklem vput(ndp->ni_dvp); 900191783Srmacklem nfsvno_relpathbuf(ndp); 901216898Srmacklem vrele(ndp->ni_startdir); 902191783Srmacklem /* 903191783Srmacklem * Since VOP_MKNOD returns the ni_vp, I can't 904191783Srmacklem * see any reason to do the lookup. 905191783Srmacklem */ 906191783Srmacklem } 907224086Szack 908224086Szackout: 909224086Szack NFSEXITCODE(error); 910191783Srmacklem return (error); 911191783Srmacklem} 912191783Srmacklem 913191783Srmacklem/* 914191783Srmacklem * Mkdir vnode op. 915191783Srmacklem */ 916191783Srmacklemint 917191783Srmacklemnfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, 918191783Srmacklem struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 919191783Srmacklem{ 920191783Srmacklem int error = 0; 921191783Srmacklem 922191783Srmacklem if (ndp->ni_vp != NULL) { 923191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 924191783Srmacklem vrele(ndp->ni_dvp); 925191783Srmacklem else 926191783Srmacklem vput(ndp->ni_dvp); 927191783Srmacklem vrele(ndp->ni_vp); 928206063Srmacklem nfsvno_relpathbuf(ndp); 929224086Szack error = EEXIST; 930224086Szack goto out; 931191783Srmacklem } 932191783Srmacklem error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 933191783Srmacklem &nvap->na_vattr); 934191783Srmacklem vput(ndp->ni_dvp); 935191783Srmacklem nfsvno_relpathbuf(ndp); 936224086Szack 937224086Szackout: 938224086Szack NFSEXITCODE(error); 939191783Srmacklem return (error); 940191783Srmacklem} 941191783Srmacklem 942191783Srmacklem/* 943191783Srmacklem * symlink vnode op. 944191783Srmacklem */ 945191783Srmacklemint 946191783Srmacklemnfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, 947191783Srmacklem int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, 948191783Srmacklem struct nfsexstuff *exp) 949191783Srmacklem{ 950191783Srmacklem int error = 0; 951191783Srmacklem 952191783Srmacklem if (ndp->ni_vp) { 953191783Srmacklem vrele(ndp->ni_startdir); 954191783Srmacklem nfsvno_relpathbuf(ndp); 955191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 956191783Srmacklem vrele(ndp->ni_dvp); 957191783Srmacklem else 958191783Srmacklem vput(ndp->ni_dvp); 959191783Srmacklem vrele(ndp->ni_vp); 960224086Szack error = EEXIST; 961224086Szack goto out; 962191783Srmacklem } 963191783Srmacklem 964191783Srmacklem error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 965191783Srmacklem &nvap->na_vattr, pathcp); 966191783Srmacklem vput(ndp->ni_dvp); 967191783Srmacklem vrele(ndp->ni_startdir); 968191783Srmacklem nfsvno_relpathbuf(ndp); 969191783Srmacklem /* 970191783Srmacklem * Although FreeBSD still had the lookup code in 971191783Srmacklem * it for 7/current, there doesn't seem to be any 972191783Srmacklem * point, since VOP_SYMLINK() returns the ni_vp. 973191783Srmacklem * Just vput it for v2. 974191783Srmacklem */ 975191783Srmacklem if (!not_v2 && !error) 976191783Srmacklem vput(ndp->ni_vp); 977224086Szack 978224086Szackout: 979224086Szack NFSEXITCODE(error); 980191783Srmacklem return (error); 981191783Srmacklem} 982191783Srmacklem 983191783Srmacklem/* 984191783Srmacklem * Parse symbolic link arguments. 985191783Srmacklem * This function has an ugly side effect. It will MALLOC() an area for 986191783Srmacklem * the symlink and set iov_base to point to it, only if it succeeds. 987191783Srmacklem * So, if it returns with uiop->uio_iov->iov_base != NULL, that must 988191783Srmacklem * be FREE'd later. 989191783Srmacklem */ 990191783Srmacklemint 991191783Srmacklemnfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, 992191783Srmacklem struct thread *p, char **pathcpp, int *lenp) 993191783Srmacklem{ 994191783Srmacklem u_int32_t *tl; 995191783Srmacklem char *pathcp = NULL; 996191783Srmacklem int error = 0, len; 997191783Srmacklem struct nfsv2_sattr *sp; 998191783Srmacklem 999191783Srmacklem *pathcpp = NULL; 1000191783Srmacklem *lenp = 0; 1001191783Srmacklem if ((nd->nd_flag & ND_NFSV3) && 1002191783Srmacklem (error = nfsrv_sattr(nd, nvap, NULL, NULL, p))) 1003191783Srmacklem goto nfsmout; 1004191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1005191783Srmacklem len = fxdr_unsigned(int, *tl); 1006191783Srmacklem if (len > NFS_MAXPATHLEN || len <= 0) { 1007191783Srmacklem error = EBADRPC; 1008191783Srmacklem goto nfsmout; 1009191783Srmacklem } 1010191783Srmacklem MALLOC(pathcp, caddr_t, len + 1, M_TEMP, M_WAITOK); 1011191783Srmacklem error = nfsrv_mtostr(nd, pathcp, len); 1012191783Srmacklem if (error) 1013191783Srmacklem goto nfsmout; 1014191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1015191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 1016191783Srmacklem nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); 1017191783Srmacklem } 1018191783Srmacklem *pathcpp = pathcp; 1019191783Srmacklem *lenp = len; 1020224086Szack NFSEXITCODE2(0, nd); 1021191783Srmacklem return (0); 1022191783Srmacklemnfsmout: 1023191783Srmacklem if (pathcp) 1024191783Srmacklem free(pathcp, M_TEMP); 1025224086Szack NFSEXITCODE2(error, nd); 1026191783Srmacklem return (error); 1027191783Srmacklem} 1028191783Srmacklem 1029191783Srmacklem/* 1030191783Srmacklem * Remove a non-directory object. 1031191783Srmacklem */ 1032191783Srmacklemint 1033191783Srmacklemnfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1034191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1035191783Srmacklem{ 1036191783Srmacklem struct vnode *vp; 1037191783Srmacklem int error = 0; 1038191783Srmacklem 1039191783Srmacklem vp = ndp->ni_vp; 1040191783Srmacklem if (vp->v_type == VDIR) 1041191783Srmacklem error = NFSERR_ISDIR; 1042191783Srmacklem else if (is_v4) 1043191783Srmacklem error = nfsrv_checkremove(vp, 1, p); 1044191783Srmacklem if (!error) 1045191783Srmacklem error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); 1046191783Srmacklem if (ndp->ni_dvp == vp) 1047191783Srmacklem vrele(ndp->ni_dvp); 1048191783Srmacklem else 1049191783Srmacklem vput(ndp->ni_dvp); 1050191783Srmacklem vput(vp); 1051234740Srmacklem if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0) 1052234740Srmacklem nfsvno_relpathbuf(ndp); 1053224086Szack NFSEXITCODE(error); 1054191783Srmacklem return (error); 1055191783Srmacklem} 1056191783Srmacklem 1057191783Srmacklem/* 1058191783Srmacklem * Remove a directory. 1059191783Srmacklem */ 1060191783Srmacklemint 1061191783Srmacklemnfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1062191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1063191783Srmacklem{ 1064191783Srmacklem struct vnode *vp; 1065191783Srmacklem int error = 0; 1066191783Srmacklem 1067191783Srmacklem vp = ndp->ni_vp; 1068191783Srmacklem if (vp->v_type != VDIR) { 1069191783Srmacklem error = ENOTDIR; 1070191783Srmacklem goto out; 1071191783Srmacklem } 1072191783Srmacklem /* 1073191783Srmacklem * No rmdir "." please. 1074191783Srmacklem */ 1075191783Srmacklem if (ndp->ni_dvp == vp) { 1076191783Srmacklem error = EINVAL; 1077191783Srmacklem goto out; 1078191783Srmacklem } 1079191783Srmacklem /* 1080191783Srmacklem * The root of a mounted filesystem cannot be deleted. 1081191783Srmacklem */ 1082191783Srmacklem if (vp->v_vflag & VV_ROOT) 1083191783Srmacklem error = EBUSY; 1084191783Srmacklemout: 1085191783Srmacklem if (!error) 1086191783Srmacklem error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); 1087191783Srmacklem if (ndp->ni_dvp == vp) 1088191783Srmacklem vrele(ndp->ni_dvp); 1089191783Srmacklem else 1090191783Srmacklem vput(ndp->ni_dvp); 1091191783Srmacklem vput(vp); 1092234740Srmacklem if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0) 1093234740Srmacklem nfsvno_relpathbuf(ndp); 1094224086Szack NFSEXITCODE(error); 1095191783Srmacklem return (error); 1096191783Srmacklem} 1097191783Srmacklem 1098191783Srmacklem/* 1099191783Srmacklem * Rename vnode op. 1100191783Srmacklem */ 1101191783Srmacklemint 1102191783Srmacklemnfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, 1103191783Srmacklem u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p) 1104191783Srmacklem{ 1105191783Srmacklem struct vnode *fvp, *tvp, *tdvp; 1106191783Srmacklem int error = 0; 1107191783Srmacklem 1108191783Srmacklem fvp = fromndp->ni_vp; 1109191783Srmacklem if (ndstat) { 1110191783Srmacklem vrele(fromndp->ni_dvp); 1111191783Srmacklem vrele(fvp); 1112191783Srmacklem error = ndstat; 1113191783Srmacklem goto out1; 1114191783Srmacklem } 1115191783Srmacklem tdvp = tondp->ni_dvp; 1116191783Srmacklem tvp = tondp->ni_vp; 1117191783Srmacklem if (tvp != NULL) { 1118191783Srmacklem if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1119191783Srmacklem error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST; 1120191783Srmacklem goto out; 1121191783Srmacklem } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1122191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST; 1123191783Srmacklem goto out; 1124191783Srmacklem } 1125191783Srmacklem if (tvp->v_type == VDIR && tvp->v_mountedhere) { 1126191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1127191783Srmacklem goto out; 1128191783Srmacklem } 1129191783Srmacklem 1130191783Srmacklem /* 1131191783Srmacklem * A rename to '.' or '..' results in a prematurely 1132191783Srmacklem * unlocked vnode on FreeBSD5, so I'm just going to fail that 1133191783Srmacklem * here. 1134191783Srmacklem */ 1135191783Srmacklem if ((tondp->ni_cnd.cn_namelen == 1 && 1136191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.') || 1137191783Srmacklem (tondp->ni_cnd.cn_namelen == 2 && 1138191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.' && 1139191783Srmacklem tondp->ni_cnd.cn_nameptr[1] == '.')) { 1140191783Srmacklem error = EINVAL; 1141191783Srmacklem goto out; 1142191783Srmacklem } 1143191783Srmacklem } 1144191783Srmacklem if (fvp->v_type == VDIR && fvp->v_mountedhere) { 1145191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1146191783Srmacklem goto out; 1147191783Srmacklem } 1148191783Srmacklem if (fvp->v_mount != tdvp->v_mount) { 1149191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1150191783Srmacklem goto out; 1151191783Srmacklem } 1152191783Srmacklem if (fvp == tdvp) { 1153191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL; 1154191783Srmacklem goto out; 1155191783Srmacklem } 1156191783Srmacklem if (fvp == tvp) { 1157191783Srmacklem /* 1158191783Srmacklem * If source and destination are the same, there is nothing to 1159191783Srmacklem * do. Set error to -1 to indicate this. 1160191783Srmacklem */ 1161191783Srmacklem error = -1; 1162191783Srmacklem goto out; 1163191783Srmacklem } 1164191783Srmacklem if (ndflag & ND_NFSV4) { 1165224081Szack if (NFSVOPLOCK(fvp, LK_EXCLUSIVE) == 0) { 1166216893Srmacklem error = nfsrv_checkremove(fvp, 0, p); 1167224082Szack NFSVOPUNLOCK(fvp, 0); 1168216893Srmacklem } else 1169216893Srmacklem error = EPERM; 1170191783Srmacklem if (tvp && !error) 1171191783Srmacklem error = nfsrv_checkremove(tvp, 1, p); 1172191783Srmacklem } else { 1173191783Srmacklem /* 1174191783Srmacklem * For NFSv2 and NFSv3, try to get rid of the delegation, so 1175191783Srmacklem * that the NFSv4 client won't be confused by the rename. 1176191783Srmacklem * Since nfsd_recalldelegation() can only be called on an 1177191783Srmacklem * unlocked vnode at this point and fvp is the file that will 1178191783Srmacklem * still exist after the rename, just do fvp. 1179191783Srmacklem */ 1180191783Srmacklem nfsd_recalldelegation(fvp, p); 1181191783Srmacklem } 1182191783Srmacklemout: 1183191783Srmacklem if (!error) { 1184191783Srmacklem error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, 1185191783Srmacklem &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, 1186191783Srmacklem &tondp->ni_cnd); 1187191783Srmacklem } else { 1188191783Srmacklem if (tdvp == tvp) 1189191783Srmacklem vrele(tdvp); 1190191783Srmacklem else 1191191783Srmacklem vput(tdvp); 1192191783Srmacklem if (tvp) 1193191783Srmacklem vput(tvp); 1194191783Srmacklem vrele(fromndp->ni_dvp); 1195191783Srmacklem vrele(fvp); 1196191783Srmacklem if (error == -1) 1197191783Srmacklem error = 0; 1198191783Srmacklem } 1199191783Srmacklem vrele(tondp->ni_startdir); 1200191783Srmacklem nfsvno_relpathbuf(tondp); 1201191783Srmacklemout1: 1202191783Srmacklem vrele(fromndp->ni_startdir); 1203191783Srmacklem nfsvno_relpathbuf(fromndp); 1204224086Szack NFSEXITCODE(error); 1205191783Srmacklem return (error); 1206191783Srmacklem} 1207191783Srmacklem 1208191783Srmacklem/* 1209191783Srmacklem * Link vnode op. 1210191783Srmacklem */ 1211191783Srmacklemint 1212191783Srmacklemnfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred, 1213191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1214191783Srmacklem{ 1215191783Srmacklem struct vnode *xp; 1216191783Srmacklem int error = 0; 1217191783Srmacklem 1218191783Srmacklem xp = ndp->ni_vp; 1219191783Srmacklem if (xp != NULL) { 1220191783Srmacklem error = EEXIST; 1221191783Srmacklem } else { 1222191783Srmacklem xp = ndp->ni_dvp; 1223191783Srmacklem if (vp->v_mount != xp->v_mount) 1224191783Srmacklem error = EXDEV; 1225191783Srmacklem } 1226191783Srmacklem if (!error) { 1227224081Szack NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY); 1228216893Srmacklem if ((vp->v_iflag & VI_DOOMED) == 0) 1229216893Srmacklem error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); 1230216893Srmacklem else 1231216893Srmacklem error = EPERM; 1232191783Srmacklem if (ndp->ni_dvp == vp) 1233191783Srmacklem vrele(ndp->ni_dvp); 1234191783Srmacklem else 1235191783Srmacklem vput(ndp->ni_dvp); 1236224082Szack NFSVOPUNLOCK(vp, 0); 1237191783Srmacklem } else { 1238191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1239191783Srmacklem vrele(ndp->ni_dvp); 1240191783Srmacklem else 1241191783Srmacklem vput(ndp->ni_dvp); 1242191783Srmacklem if (ndp->ni_vp) 1243191783Srmacklem vrele(ndp->ni_vp); 1244191783Srmacklem } 1245191783Srmacklem nfsvno_relpathbuf(ndp); 1246224086Szack NFSEXITCODE(error); 1247191783Srmacklem return (error); 1248191783Srmacklem} 1249191783Srmacklem 1250191783Srmacklem/* 1251191783Srmacklem * Do the fsync() appropriate for the commit. 1252191783Srmacklem */ 1253191783Srmacklemint 1254191783Srmacklemnfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, 1255191783Srmacklem struct thread *td) 1256191783Srmacklem{ 1257191783Srmacklem int error = 0; 1258191783Srmacklem 1259228560Srmacklem /* 1260228560Srmacklem * RFC 1813 3.3.21: if count is 0, a flush from offset to the end of 1261228560Srmacklem * file is done. At this time VOP_FSYNC does not accept offset and 1262228560Srmacklem * byte count parameters so call VOP_FSYNC the whole file for now. 1263228560Srmacklem * The same is true for NFSv4: RFC 3530 Sec. 14.2.3. 1264228560Srmacklem */ 1265228560Srmacklem if (cnt == 0 || cnt > MAX_COMMIT_COUNT) { 1266191783Srmacklem /* 1267191783Srmacklem * Give up and do the whole thing 1268191783Srmacklem */ 1269191783Srmacklem if (vp->v_object && 1270191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1271248084Sattilio VM_OBJECT_WLOCK(vp->v_object); 1272191783Srmacklem vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC); 1273248084Sattilio VM_OBJECT_WUNLOCK(vp->v_object); 1274191783Srmacklem } 1275191783Srmacklem error = VOP_FSYNC(vp, MNT_WAIT, td); 1276191783Srmacklem } else { 1277191783Srmacklem /* 1278191783Srmacklem * Locate and synchronously write any buffers that fall 1279191783Srmacklem * into the requested range. Note: we are assuming that 1280191783Srmacklem * f_iosize is a power of 2. 1281191783Srmacklem */ 1282191783Srmacklem int iosize = vp->v_mount->mnt_stat.f_iosize; 1283191783Srmacklem int iomask = iosize - 1; 1284191783Srmacklem struct bufobj *bo; 1285191783Srmacklem daddr_t lblkno; 1286191783Srmacklem 1287191783Srmacklem /* 1288191783Srmacklem * Align to iosize boundry, super-align to page boundry. 1289191783Srmacklem */ 1290191783Srmacklem if (off & iomask) { 1291191783Srmacklem cnt += off & iomask; 1292191783Srmacklem off &= ~(u_quad_t)iomask; 1293191783Srmacklem } 1294191783Srmacklem if (off & PAGE_MASK) { 1295191783Srmacklem cnt += off & PAGE_MASK; 1296191783Srmacklem off &= ~(u_quad_t)PAGE_MASK; 1297191783Srmacklem } 1298191783Srmacklem lblkno = off / iosize; 1299191783Srmacklem 1300191783Srmacklem if (vp->v_object && 1301191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1302248084Sattilio VM_OBJECT_WLOCK(vp->v_object); 1303218345Salc vm_object_page_clean(vp->v_object, off, off + cnt, 1304218345Salc OBJPC_SYNC); 1305248084Sattilio VM_OBJECT_WUNLOCK(vp->v_object); 1306191783Srmacklem } 1307191783Srmacklem 1308191783Srmacklem bo = &vp->v_bufobj; 1309191783Srmacklem BO_LOCK(bo); 1310191783Srmacklem while (cnt > 0) { 1311191783Srmacklem struct buf *bp; 1312191783Srmacklem 1313191783Srmacklem /* 1314191783Srmacklem * If we have a buffer and it is marked B_DELWRI we 1315191783Srmacklem * have to lock and write it. Otherwise the prior 1316191783Srmacklem * write is assumed to have already been committed. 1317191783Srmacklem * 1318191783Srmacklem * gbincore() can return invalid buffers now so we 1319191783Srmacklem * have to check that bit as well (though B_DELWRI 1320191783Srmacklem * should not be set if B_INVAL is set there could be 1321191783Srmacklem * a race here since we haven't locked the buffer). 1322191783Srmacklem */ 1323191783Srmacklem if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { 1324191783Srmacklem if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | 1325251171Sjeff LK_INTERLOCK, BO_LOCKPTR(bo)) == ENOLCK) { 1326191783Srmacklem BO_LOCK(bo); 1327191783Srmacklem continue; /* retry */ 1328191783Srmacklem } 1329191783Srmacklem if ((bp->b_flags & (B_DELWRI|B_INVAL)) == 1330191783Srmacklem B_DELWRI) { 1331191783Srmacklem bremfree(bp); 1332191783Srmacklem bp->b_flags &= ~B_ASYNC; 1333191783Srmacklem bwrite(bp); 1334191783Srmacklem ++nfs_commit_miss; 1335191783Srmacklem } else 1336191783Srmacklem BUF_UNLOCK(bp); 1337191783Srmacklem BO_LOCK(bo); 1338191783Srmacklem } 1339191783Srmacklem ++nfs_commit_blks; 1340191783Srmacklem if (cnt < iosize) 1341191783Srmacklem break; 1342191783Srmacklem cnt -= iosize; 1343191783Srmacklem ++lblkno; 1344191783Srmacklem } 1345191783Srmacklem BO_UNLOCK(bo); 1346191783Srmacklem } 1347224086Szack NFSEXITCODE(error); 1348191783Srmacklem return (error); 1349191783Srmacklem} 1350191783Srmacklem 1351191783Srmacklem/* 1352191783Srmacklem * Statfs vnode op. 1353191783Srmacklem */ 1354191783Srmacklemint 1355191990Sattilionfsvno_statfs(struct vnode *vp, struct statfs *sf) 1356191783Srmacklem{ 1357221517Srmacklem int error; 1358191783Srmacklem 1359221517Srmacklem error = VFS_STATFS(vp->v_mount, sf); 1360221517Srmacklem if (error == 0) { 1361221517Srmacklem /* 1362221517Srmacklem * Since NFS handles these values as unsigned on the 1363221517Srmacklem * wire, there is no way to represent negative values, 1364221517Srmacklem * so set them to 0. Without this, they will appear 1365221517Srmacklem * to be very large positive values for clients like 1366221517Srmacklem * Solaris10. 1367221517Srmacklem */ 1368221517Srmacklem if (sf->f_bavail < 0) 1369221517Srmacklem sf->f_bavail = 0; 1370221517Srmacklem if (sf->f_ffree < 0) 1371221517Srmacklem sf->f_ffree = 0; 1372221517Srmacklem } 1373224086Szack NFSEXITCODE(error); 1374221517Srmacklem return (error); 1375191783Srmacklem} 1376191783Srmacklem 1377191783Srmacklem/* 1378191783Srmacklem * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1379191783Srmacklem * must handle nfsrv_opencheck() calls after any other access checks. 1380191783Srmacklem */ 1381191783Srmacklemvoid 1382191783Srmacklemnfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1383191783Srmacklem nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1384199616Srmacklem int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, 1385191783Srmacklem NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p, 1386191783Srmacklem struct nfsexstuff *exp, struct vnode **vpp) 1387191783Srmacklem{ 1388191783Srmacklem struct vnode *vp = NULL; 1389191783Srmacklem u_quad_t tempsize; 1390191783Srmacklem struct nfsexstuff nes; 1391191783Srmacklem 1392191783Srmacklem if (ndp->ni_vp == NULL) 1393191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1394191783Srmacklem stateidp, stp, NULL, nd, p, nd->nd_repstat); 1395191783Srmacklem if (!nd->nd_repstat) { 1396191783Srmacklem if (ndp->ni_vp == NULL) { 1397191783Srmacklem vrele(ndp->ni_startdir); 1398191783Srmacklem nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1399191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1400191783Srmacklem vput(ndp->ni_dvp); 1401191783Srmacklem nfsvno_relpathbuf(ndp); 1402191783Srmacklem if (!nd->nd_repstat) { 1403191783Srmacklem if (*exclusive_flagp) { 1404191783Srmacklem *exclusive_flagp = 0; 1405191783Srmacklem NFSVNO_ATTRINIT(nvap); 1406199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 1407199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 1408191783Srmacklem nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1409191783Srmacklem &nvap->na_vattr, cred); 1410191783Srmacklem } else { 1411191783Srmacklem nfsrv_fixattr(nd, ndp->ni_vp, nvap, 1412191783Srmacklem aclp, p, attrbitp, exp); 1413191783Srmacklem } 1414191783Srmacklem } 1415191783Srmacklem vp = ndp->ni_vp; 1416191783Srmacklem } else { 1417191783Srmacklem if (ndp->ni_startdir) 1418191783Srmacklem vrele(ndp->ni_startdir); 1419191783Srmacklem nfsvno_relpathbuf(ndp); 1420191783Srmacklem vp = ndp->ni_vp; 1421191783Srmacklem if (create == NFSV4OPEN_CREATE) { 1422191783Srmacklem if (ndp->ni_dvp == vp) 1423191783Srmacklem vrele(ndp->ni_dvp); 1424191783Srmacklem else 1425191783Srmacklem vput(ndp->ni_dvp); 1426191783Srmacklem } 1427191783Srmacklem if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 1428191783Srmacklem if (ndp->ni_cnd.cn_flags & RDONLY) 1429191783Srmacklem NFSVNO_SETEXRDONLY(&nes); 1430191783Srmacklem else 1431191783Srmacklem NFSVNO_EXINIT(&nes); 1432191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, 1433200999Srmacklem VWRITE, cred, &nes, p, 1434200999Srmacklem NFSACCCHK_NOOVERRIDE, 1435200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1436191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1437191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1438191783Srmacklem if (!nd->nd_repstat) { 1439191783Srmacklem tempsize = nvap->na_size; 1440191783Srmacklem NFSVNO_ATTRINIT(nvap); 1441191783Srmacklem nvap->na_size = tempsize; 1442191783Srmacklem nd->nd_repstat = VOP_SETATTR(vp, 1443191783Srmacklem &nvap->na_vattr, cred); 1444191783Srmacklem } 1445191783Srmacklem } else if (vp->v_type == VREG) { 1446191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1447191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1448191783Srmacklem } 1449191783Srmacklem } 1450191783Srmacklem } else { 1451191783Srmacklem if (ndp->ni_cnd.cn_flags & HASBUF) 1452191783Srmacklem nfsvno_relpathbuf(ndp); 1453191783Srmacklem if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) { 1454191783Srmacklem vrele(ndp->ni_startdir); 1455191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1456191783Srmacklem vrele(ndp->ni_dvp); 1457191783Srmacklem else 1458191783Srmacklem vput(ndp->ni_dvp); 1459191783Srmacklem if (ndp->ni_vp) 1460191783Srmacklem vput(ndp->ni_vp); 1461191783Srmacklem } 1462191783Srmacklem } 1463191783Srmacklem *vpp = vp; 1464224086Szack 1465224086Szack NFSEXITCODE2(0, nd); 1466191783Srmacklem} 1467191783Srmacklem 1468191783Srmacklem/* 1469191783Srmacklem * Updates the file rev and sets the mtime and ctime 1470191783Srmacklem * to the current clock time, returning the va_filerev and va_Xtime 1471191783Srmacklem * values. 1472191783Srmacklem */ 1473191783Srmacklemvoid 1474191783Srmacklemnfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 1475191783Srmacklem struct ucred *cred, struct thread *p) 1476191783Srmacklem{ 1477191783Srmacklem struct vattr va; 1478191783Srmacklem 1479191783Srmacklem VATTR_NULL(&va); 1480245611Sjhb vfs_timestamp(&va.va_mtime); 1481191783Srmacklem (void) VOP_SETATTR(vp, &va, cred); 1482216693Srmacklem (void) nfsvno_getattr(vp, nvap, cred, p, 1); 1483191783Srmacklem} 1484191783Srmacklem 1485191783Srmacklem/* 1486191783Srmacklem * Glue routine to nfsv4_fillattr(). 1487191783Srmacklem */ 1488191783Srmacklemint 1489220645Srmacklemnfsvno_fillattr(struct nfsrv_descript *nd, struct mount *mp, struct vnode *vp, 1490191783Srmacklem struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 1491220648Srmacklem struct ucred *cred, struct thread *p, int isdgram, int reterr, 1492220648Srmacklem int supports_nfsv4acls, int at_root, uint64_t mounted_on_fileno) 1493191783Srmacklem{ 1494191783Srmacklem int error; 1495191783Srmacklem 1496220645Srmacklem error = nfsv4_fillattr(nd, mp, vp, NULL, &nvap->na_vattr, fhp, rderror, 1497220648Srmacklem attrbitp, cred, p, isdgram, reterr, supports_nfsv4acls, at_root, 1498220648Srmacklem mounted_on_fileno); 1499224086Szack NFSEXITCODE2(0, nd); 1500191783Srmacklem return (error); 1501191783Srmacklem} 1502191783Srmacklem 1503191783Srmacklem/* Since the Readdir vnode ops vary, put the entire functions in here. */ 1504191783Srmacklem/* 1505191783Srmacklem * nfs readdir service 1506191783Srmacklem * - mallocs what it thinks is enough to read 1507191783Srmacklem * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 1508206170Srmacklem * - calls VOP_READDIR() 1509191783Srmacklem * - loops around building the reply 1510191783Srmacklem * if the output generated exceeds count break out of loop 1511191783Srmacklem * The NFSM_CLGET macro is used here so that the reply will be packed 1512191783Srmacklem * tightly in mbuf clusters. 1513191783Srmacklem * - it trims out records with d_fileno == 0 1514191783Srmacklem * this doesn't matter for Unix clients, but they might confuse clients 1515191783Srmacklem * for other os'. 1516191783Srmacklem * - it trims out records with d_type == DT_WHT 1517191783Srmacklem * these cannot be seen through NFS (unless we extend the protocol) 1518191783Srmacklem * The alternate call nfsrvd_readdirplus() does lookups as well. 1519191783Srmacklem * PS: The NFS protocol spec. does not clarify what the "count" byte 1520191783Srmacklem * argument is a count of.. just name strings and file id's or the 1521191783Srmacklem * entire reply rpc or ... 1522191783Srmacklem * I tried just file name and id sizes and it confused the Sun client, 1523191783Srmacklem * so I am using the full rpc size now. The "paranoia.." comment refers 1524191783Srmacklem * to including the status longwords that are not a part of the dir. 1525191783Srmacklem * "entry" structures, but are in the rpc. 1526191783Srmacklem */ 1527191783Srmacklemint 1528191783Srmacklemnfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 1529191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1530191783Srmacklem{ 1531191783Srmacklem struct dirent *dp; 1532191783Srmacklem u_int32_t *tl; 1533191783Srmacklem int dirlen; 1534191783Srmacklem char *cpos, *cend, *rbuf; 1535191783Srmacklem struct nfsvattr at; 1536191783Srmacklem int nlen, error = 0, getret = 1; 1537191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies; 1538191783Srmacklem u_int64_t off, toff, verf; 1539191783Srmacklem u_long *cookies = NULL, *cookiep; 1540191783Srmacklem struct uio io; 1541191783Srmacklem struct iovec iv; 1542216691Srmacklem int not_zfs; 1543191783Srmacklem 1544191783Srmacklem if (nd->nd_repstat) { 1545191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1546224086Szack goto out; 1547191783Srmacklem } 1548191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1549191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1550191783Srmacklem off = fxdr_unsigned(u_quad_t, *tl++); 1551191783Srmacklem } else { 1552191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1553191783Srmacklem off = fxdr_hyper(tl); 1554191783Srmacklem tl += 2; 1555191783Srmacklem verf = fxdr_hyper(tl); 1556191783Srmacklem tl += 2; 1557191783Srmacklem } 1558191783Srmacklem toff = off; 1559191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1560206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1561191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1562191783Srmacklem siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1563191783Srmacklem fullsiz = siz; 1564191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1565191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, 1566216693Srmacklem p, 1); 1567191783Srmacklem#if 0 1568191783Srmacklem /* 1569191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1570191783Srmacklem * since it is not supposed to change when entries are 1571191783Srmacklem * removed/added unless that offset cookies returned to 1572191783Srmacklem * the client are no longer valid. 1573191783Srmacklem */ 1574191783Srmacklem if (!nd->nd_repstat && toff && verf != at.na_filerev) 1575191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1576191783Srmacklem#endif 1577191783Srmacklem } 1578250055Sdes if (!nd->nd_repstat && vp->v_type != VDIR) 1579250055Sdes nd->nd_repstat = NFSERR_NOTDIR; 1580206170Srmacklem if (nd->nd_repstat == 0 && cnt == 0) { 1581206170Srmacklem if (nd->nd_flag & ND_NFSV2) 1582206170Srmacklem /* NFSv2 does not have NFSERR_TOOSMALL */ 1583206170Srmacklem nd->nd_repstat = EPERM; 1584206170Srmacklem else 1585206170Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1586206170Srmacklem } 1587191783Srmacklem if (!nd->nd_repstat) 1588200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1589191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1590200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1591191783Srmacklem if (nd->nd_repstat) { 1592191783Srmacklem vput(vp); 1593191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1594191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1595224086Szack goto out; 1596191783Srmacklem } 1597216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1598191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1599191783Srmacklemagain: 1600191783Srmacklem eofflag = 0; 1601191783Srmacklem if (cookies) { 1602191783Srmacklem free((caddr_t)cookies, M_TEMP); 1603191783Srmacklem cookies = NULL; 1604191783Srmacklem } 1605191783Srmacklem 1606191783Srmacklem iv.iov_base = rbuf; 1607191783Srmacklem iv.iov_len = siz; 1608191783Srmacklem io.uio_iov = &iv; 1609191783Srmacklem io.uio_iovcnt = 1; 1610191783Srmacklem io.uio_offset = (off_t)off; 1611191783Srmacklem io.uio_resid = siz; 1612191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1613191783Srmacklem io.uio_rw = UIO_READ; 1614191783Srmacklem io.uio_td = NULL; 1615191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1616191783Srmacklem &cookies); 1617191783Srmacklem off = (u_int64_t)io.uio_offset; 1618191783Srmacklem if (io.uio_resid) 1619191783Srmacklem siz -= io.uio_resid; 1620191783Srmacklem 1621191783Srmacklem if (!cookies && !nd->nd_repstat) 1622191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1623191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1624216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1625191783Srmacklem if (!nd->nd_repstat) 1626191783Srmacklem nd->nd_repstat = getret; 1627191783Srmacklem } 1628191783Srmacklem 1629191783Srmacklem /* 1630191783Srmacklem * Handles the failed cases. nd->nd_repstat == 0 past here. 1631191783Srmacklem */ 1632191783Srmacklem if (nd->nd_repstat) { 1633216692Srmacklem vput(vp); 1634191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1635191783Srmacklem if (cookies) 1636191783Srmacklem free((caddr_t)cookies, M_TEMP); 1637191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1638191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1639224086Szack goto out; 1640191783Srmacklem } 1641191783Srmacklem /* 1642191783Srmacklem * If nothing read, return eof 1643191783Srmacklem * rpc reply 1644191783Srmacklem */ 1645191783Srmacklem if (siz == 0) { 1646216692Srmacklem vput(vp); 1647191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1648191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1649191783Srmacklem } else { 1650191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1651191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1652191783Srmacklem txdr_hyper(at.na_filerev, tl); 1653191783Srmacklem tl += 2; 1654191783Srmacklem } 1655191783Srmacklem *tl++ = newnfs_false; 1656191783Srmacklem *tl = newnfs_true; 1657191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1658191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1659224086Szack goto out; 1660191783Srmacklem } 1661191783Srmacklem 1662191783Srmacklem /* 1663191783Srmacklem * Check for degenerate cases of nothing useful read. 1664191783Srmacklem * If so go try again 1665191783Srmacklem */ 1666191783Srmacklem cpos = rbuf; 1667191783Srmacklem cend = rbuf + siz; 1668191783Srmacklem dp = (struct dirent *)cpos; 1669191783Srmacklem cookiep = cookies; 1670191783Srmacklem 1671191783Srmacklem /* 1672191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1673191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1674191783Srmacklem * skip over the records that precede the requested offset. This 1675191783Srmacklem * requires the assumption that file offset cookies monotonically 1676191783Srmacklem * increase. 1677216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1678216691Srmacklem * this is not done when ZFS is the file system. 1679191783Srmacklem */ 1680191783Srmacklem while (cpos < cend && ncookies > 0 && 1681191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1682216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff))) { 1683191783Srmacklem cpos += dp->d_reclen; 1684191783Srmacklem dp = (struct dirent *)cpos; 1685191783Srmacklem cookiep++; 1686191783Srmacklem ncookies--; 1687191783Srmacklem } 1688191783Srmacklem if (cpos >= cend || ncookies == 0) { 1689191783Srmacklem siz = fullsiz; 1690191783Srmacklem toff = off; 1691191783Srmacklem goto again; 1692191783Srmacklem } 1693216692Srmacklem vput(vp); 1694191783Srmacklem 1695191783Srmacklem /* 1696191783Srmacklem * dirlen is the size of the reply, including all XDR and must 1697191783Srmacklem * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 1698191783Srmacklem * if the XDR should be included in "count", but to be safe, we do. 1699191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now.) 1700191783Srmacklem */ 1701191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1702191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1703191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1704191783Srmacklem txdr_hyper(at.na_filerev, tl); 1705191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1706191783Srmacklem } else { 1707191783Srmacklem dirlen = 2 * NFSX_UNSIGNED; 1708191783Srmacklem } 1709191783Srmacklem 1710191783Srmacklem /* Loop through the records and build reply */ 1711191783Srmacklem while (cpos < cend && ncookies > 0) { 1712191783Srmacklem nlen = dp->d_namlen; 1713191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1714191783Srmacklem nlen <= NFS_MAXNAMLEN) { 1715191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1716191783Srmacklem dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1717191783Srmacklem else 1718191783Srmacklem dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1719191783Srmacklem if (dirlen > cnt) { 1720191783Srmacklem eofflag = 0; 1721191783Srmacklem break; 1722191783Srmacklem } 1723191783Srmacklem 1724191783Srmacklem /* 1725191783Srmacklem * Build the directory record xdr from 1726191783Srmacklem * the dirent entry. 1727191783Srmacklem */ 1728191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1729191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1730191783Srmacklem *tl++ = newnfs_true; 1731191783Srmacklem *tl++ = 0; 1732191783Srmacklem } else { 1733191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1734191783Srmacklem *tl++ = newnfs_true; 1735191783Srmacklem } 1736191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1737191783Srmacklem (void) nfsm_strtom(nd, dp->d_name, nlen); 1738191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1739191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1740191783Srmacklem *tl++ = 0; 1741191783Srmacklem } else 1742191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1743191783Srmacklem *tl = txdr_unsigned(*cookiep); 1744191783Srmacklem } 1745191783Srmacklem cpos += dp->d_reclen; 1746191783Srmacklem dp = (struct dirent *)cpos; 1747191783Srmacklem cookiep++; 1748191783Srmacklem ncookies--; 1749191783Srmacklem } 1750191783Srmacklem if (cpos < cend) 1751191783Srmacklem eofflag = 0; 1752191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1753191783Srmacklem *tl++ = newnfs_false; 1754191783Srmacklem if (eofflag) 1755191783Srmacklem *tl = newnfs_true; 1756191783Srmacklem else 1757191783Srmacklem *tl = newnfs_false; 1758191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1759191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1760224086Szack 1761224086Szackout: 1762224086Szack NFSEXITCODE2(0, nd); 1763191783Srmacklem return (0); 1764191783Srmacklemnfsmout: 1765191783Srmacklem vput(vp); 1766224086Szack NFSEXITCODE2(error, nd); 1767191783Srmacklem return (error); 1768191783Srmacklem} 1769191783Srmacklem 1770191783Srmacklem/* 1771191783Srmacklem * Readdirplus for V3 and Readdir for V4. 1772191783Srmacklem */ 1773191783Srmacklemint 1774191783Srmacklemnfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 1775191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1776191783Srmacklem{ 1777191783Srmacklem struct dirent *dp; 1778191783Srmacklem u_int32_t *tl; 1779191783Srmacklem int dirlen; 1780191783Srmacklem char *cpos, *cend, *rbuf; 1781191783Srmacklem struct vnode *nvp; 1782191783Srmacklem fhandle_t nfh; 1783191783Srmacklem struct nfsvattr nva, at, *nvap = &nva; 1784191783Srmacklem struct mbuf *mb0, *mb1; 1785191783Srmacklem struct nfsreferral *refp; 1786199715Srmacklem int nlen, r, error = 0, getret = 1, usevget = 1; 1787191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 1788191783Srmacklem caddr_t bpos0, bpos1; 1789191783Srmacklem u_int64_t off, toff, verf; 1790191783Srmacklem u_long *cookies = NULL, *cookiep; 1791191783Srmacklem nfsattrbit_t attrbits, rderrbits, savbits; 1792191783Srmacklem struct uio io; 1793191783Srmacklem struct iovec iv; 1794199715Srmacklem struct componentname cn; 1795220648Srmacklem int at_root, needs_unbusy, not_zfs, supports_nfsv4acls; 1796220645Srmacklem struct mount *mp, *new_mp; 1797220645Srmacklem uint64_t mounted_on_fileno; 1798191783Srmacklem 1799191783Srmacklem if (nd->nd_repstat) { 1800191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1801224086Szack goto out; 1802191783Srmacklem } 1803191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 1804191783Srmacklem off = fxdr_hyper(tl); 1805191783Srmacklem toff = off; 1806191783Srmacklem tl += 2; 1807191783Srmacklem verf = fxdr_hyper(tl); 1808191783Srmacklem tl += 2; 1809191783Srmacklem siz = fxdr_unsigned(int, *tl++); 1810191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1811191783Srmacklem 1812191783Srmacklem /* 1813191783Srmacklem * Use the server's maximum data transfer size as the upper bound 1814191783Srmacklem * on reply datalen. 1815191783Srmacklem */ 1816206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1817191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1818191783Srmacklem 1819191783Srmacklem /* 1820191783Srmacklem * siz is a "hint" of how much directory information (name, fileid, 1821191783Srmacklem * cookie) should be in the reply. At least one client "hints" 0, 1822191783Srmacklem * so I set it to cnt for that case. I also round it up to the 1823191783Srmacklem * next multiple of DIRBLKSIZ. 1824191783Srmacklem */ 1825206170Srmacklem if (siz <= 0) 1826191783Srmacklem siz = cnt; 1827191783Srmacklem siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1828191783Srmacklem 1829191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1830191783Srmacklem error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1831191783Srmacklem if (error) 1832191783Srmacklem goto nfsmout; 1833191783Srmacklem NFSSET_ATTRBIT(&savbits, &attrbits); 1834191783Srmacklem NFSCLRNOTFILLABLE_ATTRBIT(&attrbits); 1835191783Srmacklem NFSZERO_ATTRBIT(&rderrbits); 1836191783Srmacklem NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 1837191783Srmacklem } else { 1838191783Srmacklem NFSZERO_ATTRBIT(&attrbits); 1839191783Srmacklem } 1840191783Srmacklem fullsiz = siz; 1841216693Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1842191783Srmacklem if (!nd->nd_repstat) { 1843191783Srmacklem if (off && verf != at.na_filerev) { 1844191783Srmacklem /* 1845191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1846191783Srmacklem * since it is not supposed to change when entries are 1847191783Srmacklem * removed/added unless that offset cookies returned to 1848191783Srmacklem * the client are no longer valid. 1849191783Srmacklem */ 1850191783Srmacklem#if 0 1851191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1852191783Srmacklem nd->nd_repstat = NFSERR_NOTSAME; 1853191783Srmacklem } else { 1854191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1855191783Srmacklem } 1856191783Srmacklem#endif 1857191783Srmacklem } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) { 1858191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1859191783Srmacklem } 1860191783Srmacklem } 1861191783Srmacklem if (!nd->nd_repstat && vp->v_type != VDIR) 1862191783Srmacklem nd->nd_repstat = NFSERR_NOTDIR; 1863191783Srmacklem if (!nd->nd_repstat && cnt == 0) 1864191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1865191783Srmacklem if (!nd->nd_repstat) 1866200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1867191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1868200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1869191783Srmacklem if (nd->nd_repstat) { 1870191783Srmacklem vput(vp); 1871191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1872191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1873224086Szack goto out; 1874191783Srmacklem } 1875216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1876191783Srmacklem 1877191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1878191783Srmacklemagain: 1879191783Srmacklem eofflag = 0; 1880191783Srmacklem if (cookies) { 1881191783Srmacklem free((caddr_t)cookies, M_TEMP); 1882191783Srmacklem cookies = NULL; 1883191783Srmacklem } 1884191783Srmacklem 1885191783Srmacklem iv.iov_base = rbuf; 1886191783Srmacklem iv.iov_len = siz; 1887191783Srmacklem io.uio_iov = &iv; 1888191783Srmacklem io.uio_iovcnt = 1; 1889191783Srmacklem io.uio_offset = (off_t)off; 1890191783Srmacklem io.uio_resid = siz; 1891191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1892191783Srmacklem io.uio_rw = UIO_READ; 1893191783Srmacklem io.uio_td = NULL; 1894191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1895191783Srmacklem &cookies); 1896191783Srmacklem off = (u_int64_t)io.uio_offset; 1897191783Srmacklem if (io.uio_resid) 1898191783Srmacklem siz -= io.uio_resid; 1899191783Srmacklem 1900216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1901191783Srmacklem 1902191783Srmacklem if (!cookies && !nd->nd_repstat) 1903191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1904191783Srmacklem if (!nd->nd_repstat) 1905191783Srmacklem nd->nd_repstat = getret; 1906191783Srmacklem if (nd->nd_repstat) { 1907199715Srmacklem vput(vp); 1908191783Srmacklem if (cookies) 1909191783Srmacklem free((caddr_t)cookies, M_TEMP); 1910191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1911191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1912191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1913224086Szack goto out; 1914191783Srmacklem } 1915191783Srmacklem /* 1916191783Srmacklem * If nothing read, return eof 1917191783Srmacklem * rpc reply 1918191783Srmacklem */ 1919191783Srmacklem if (siz == 0) { 1920199715Srmacklem vput(vp); 1921191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1922191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1923191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1924191783Srmacklem txdr_hyper(at.na_filerev, tl); 1925191783Srmacklem tl += 2; 1926191783Srmacklem *tl++ = newnfs_false; 1927191783Srmacklem *tl = newnfs_true; 1928191783Srmacklem free((caddr_t)cookies, M_TEMP); 1929191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1930224086Szack goto out; 1931191783Srmacklem } 1932191783Srmacklem 1933191783Srmacklem /* 1934191783Srmacklem * Check for degenerate cases of nothing useful read. 1935191783Srmacklem * If so go try again 1936191783Srmacklem */ 1937191783Srmacklem cpos = rbuf; 1938191783Srmacklem cend = rbuf + siz; 1939191783Srmacklem dp = (struct dirent *)cpos; 1940191783Srmacklem cookiep = cookies; 1941191783Srmacklem 1942191783Srmacklem /* 1943191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1944191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1945191783Srmacklem * skip over the records that precede the requested offset. This 1946191783Srmacklem * requires the assumption that file offset cookies monotonically 1947191783Srmacklem * increase. 1948216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1949216691Srmacklem * this is not done when ZFS is the file system. 1950191783Srmacklem */ 1951191783Srmacklem while (cpos < cend && ncookies > 0 && 1952191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1953216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff) || 1954191783Srmacklem ((nd->nd_flag & ND_NFSV4) && 1955191783Srmacklem ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 1956191783Srmacklem (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 1957191783Srmacklem cpos += dp->d_reclen; 1958191783Srmacklem dp = (struct dirent *)cpos; 1959191783Srmacklem cookiep++; 1960191783Srmacklem ncookies--; 1961191783Srmacklem } 1962191783Srmacklem if (cpos >= cend || ncookies == 0) { 1963191783Srmacklem siz = fullsiz; 1964191783Srmacklem toff = off; 1965191783Srmacklem goto again; 1966191783Srmacklem } 1967217176Srmacklem 1968217176Srmacklem /* 1969217176Srmacklem * Busy the file system so that the mount point won't go away 1970217176Srmacklem * and, as such, VFS_VGET() can be used safely. 1971217176Srmacklem */ 1972217176Srmacklem mp = vp->v_mount; 1973217176Srmacklem vfs_ref(mp); 1974224082Szack NFSVOPUNLOCK(vp, 0); 1975217176Srmacklem nd->nd_repstat = vfs_busy(mp, 0); 1976217176Srmacklem vfs_rel(mp); 1977217176Srmacklem if (nd->nd_repstat != 0) { 1978217176Srmacklem vrele(vp); 1979217176Srmacklem free(cookies, M_TEMP); 1980217176Srmacklem free(rbuf, M_TEMP); 1981217176Srmacklem if (nd->nd_flag & ND_NFSV3) 1982217176Srmacklem nfsrv_postopattr(nd, getret, &at); 1983224086Szack goto out; 1984217176Srmacklem } 1985191783Srmacklem 1986191783Srmacklem /* 1987191783Srmacklem * Save this position, in case there is an error before one entry 1988191783Srmacklem * is created. 1989191783Srmacklem */ 1990191783Srmacklem mb0 = nd->nd_mb; 1991191783Srmacklem bpos0 = nd->nd_bpos; 1992191783Srmacklem 1993191783Srmacklem /* 1994191783Srmacklem * Fill in the first part of the reply. 1995191783Srmacklem * dirlen is the reply length in bytes and cannot exceed cnt. 1996191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now, 1997191783Srmacklem * so we recognize when we have exceeded cnt.) 1998191783Srmacklem */ 1999191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 2000191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 2001191783Srmacklem nfsrv_postopattr(nd, getret, &at); 2002191783Srmacklem } else { 2003191783Srmacklem dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 2004191783Srmacklem } 2005191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2006191783Srmacklem txdr_hyper(at.na_filerev, tl); 2007191783Srmacklem 2008191783Srmacklem /* 2009191783Srmacklem * Save this position, in case there is an empty reply needed. 2010191783Srmacklem */ 2011191783Srmacklem mb1 = nd->nd_mb; 2012191783Srmacklem bpos1 = nd->nd_bpos; 2013191783Srmacklem 2014191783Srmacklem /* Loop through the records and build reply */ 2015191783Srmacklem entrycnt = 0; 2016191783Srmacklem while (cpos < cend && ncookies > 0 && dirlen < cnt) { 2017191783Srmacklem nlen = dp->d_namlen; 2018191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 2019191783Srmacklem nlen <= NFS_MAXNAMLEN && 2020191783Srmacklem ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 2021191783Srmacklem (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 2022191783Srmacklem || (nlen == 1 && dp->d_name[0] != '.'))) { 2023191783Srmacklem /* 2024191783Srmacklem * Save the current position in the reply, in case 2025191783Srmacklem * this entry exceeds cnt. 2026191783Srmacklem */ 2027191783Srmacklem mb1 = nd->nd_mb; 2028191783Srmacklem bpos1 = nd->nd_bpos; 2029191783Srmacklem 2030191783Srmacklem /* 2031191783Srmacklem * For readdir_and_lookup get the vnode using 2032191783Srmacklem * the file number. 2033191783Srmacklem */ 2034191783Srmacklem nvp = NULL; 2035191783Srmacklem refp = NULL; 2036191783Srmacklem r = 0; 2037220645Srmacklem at_root = 0; 2038220645Srmacklem needs_unbusy = 0; 2039220645Srmacklem new_mp = mp; 2040220645Srmacklem mounted_on_fileno = (uint64_t)dp->d_fileno; 2041191783Srmacklem if ((nd->nd_flag & ND_NFSV3) || 2042191783Srmacklem NFSNONZERO_ATTRBIT(&savbits)) { 2043191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2044191783Srmacklem refp = nfsv4root_getreferral(NULL, 2045191783Srmacklem vp, dp->d_fileno); 2046199715Srmacklem if (refp == NULL) { 2047199715Srmacklem if (usevget) 2048217176Srmacklem r = VFS_VGET(mp, dp->d_fileno, 2049217176Srmacklem LK_SHARED, &nvp); 2050199715Srmacklem else 2051199715Srmacklem r = EOPNOTSUPP; 2052199715Srmacklem if (r == EOPNOTSUPP) { 2053199715Srmacklem if (usevget) { 2054199715Srmacklem usevget = 0; 2055199715Srmacklem cn.cn_nameiop = LOOKUP; 2056199715Srmacklem cn.cn_lkflags = 2057216700Srmacklem LK_SHARED | 2058199715Srmacklem LK_RETRY; 2059199715Srmacklem cn.cn_cred = 2060199715Srmacklem nd->nd_cred; 2061199715Srmacklem cn.cn_thread = p; 2062199715Srmacklem } 2063199715Srmacklem cn.cn_nameptr = dp->d_name; 2064199715Srmacklem cn.cn_namelen = nlen; 2065199715Srmacklem cn.cn_flags = ISLASTCN | 2066241896Skib NOFOLLOW | LOCKLEAF; 2067199715Srmacklem if (nlen == 2 && 2068199715Srmacklem dp->d_name[0] == '.' && 2069199715Srmacklem dp->d_name[1] == '.') 2070199715Srmacklem cn.cn_flags |= 2071199715Srmacklem ISDOTDOT; 2072224081Szack if (NFSVOPLOCK(vp, LK_SHARED) 2073216692Srmacklem != 0) { 2074216692Srmacklem nd->nd_repstat = EPERM; 2075216692Srmacklem break; 2076216692Srmacklem } 2077214149Srmacklem if ((vp->v_vflag & VV_ROOT) != 0 2078214149Srmacklem && (cn.cn_flags & ISDOTDOT) 2079214149Srmacklem != 0) { 2080214149Srmacklem vref(vp); 2081214149Srmacklem nvp = vp; 2082214149Srmacklem r = 0; 2083220507Srmacklem } else { 2084214149Srmacklem r = VOP_LOOKUP(vp, &nvp, 2085214149Srmacklem &cn); 2086220507Srmacklem if (vp != nvp) 2087224082Szack NFSVOPUNLOCK(vp, 2088220507Srmacklem 0); 2089220507Srmacklem } 2090199715Srmacklem } 2091220645Srmacklem 2092220645Srmacklem /* 2093220645Srmacklem * For NFSv4, check to see if nvp is 2094220645Srmacklem * a mount point and get the mount 2095220645Srmacklem * point vnode, as required. 2096220645Srmacklem */ 2097220645Srmacklem if (r == 0 && 2098220645Srmacklem nfsrv_enable_crossmntpt != 0 && 2099220645Srmacklem (nd->nd_flag & ND_NFSV4) != 0 && 2100220645Srmacklem nvp->v_type == VDIR && 2101220645Srmacklem nvp->v_mountedhere != NULL) { 2102220645Srmacklem new_mp = nvp->v_mountedhere; 2103220645Srmacklem r = vfs_busy(new_mp, 0); 2104220645Srmacklem vput(nvp); 2105220645Srmacklem nvp = NULL; 2106220645Srmacklem if (r == 0) { 2107220645Srmacklem r = VFS_ROOT(new_mp, 2108220645Srmacklem LK_SHARED, &nvp); 2109220645Srmacklem needs_unbusy = 1; 2110220645Srmacklem if (r == 0) 2111220645Srmacklem at_root = 1; 2112220645Srmacklem } 2113220645Srmacklem } 2114199715Srmacklem } 2115191783Srmacklem if (!r) { 2116191783Srmacklem if (refp == NULL && 2117191783Srmacklem ((nd->nd_flag & ND_NFSV3) || 2118191783Srmacklem NFSNONZERO_ATTRBIT(&attrbits))) { 2119191783Srmacklem r = nfsvno_getfh(nvp, &nfh, p); 2120191783Srmacklem if (!r) 2121191783Srmacklem r = nfsvno_getattr(nvp, nvap, 2122216693Srmacklem nd->nd_cred, p, 1); 2123191783Srmacklem } 2124191783Srmacklem } else { 2125191783Srmacklem nvp = NULL; 2126191783Srmacklem } 2127191783Srmacklem if (r) { 2128191783Srmacklem if (!NFSISSET_ATTRBIT(&attrbits, 2129191783Srmacklem NFSATTRBIT_RDATTRERROR)) { 2130191783Srmacklem if (nvp != NULL) 2131191783Srmacklem vput(nvp); 2132220645Srmacklem if (needs_unbusy != 0) 2133220645Srmacklem vfs_unbusy(new_mp); 2134191783Srmacklem nd->nd_repstat = r; 2135191783Srmacklem break; 2136191783Srmacklem } 2137191783Srmacklem } 2138191783Srmacklem } 2139191783Srmacklem 2140191783Srmacklem /* 2141191783Srmacklem * Build the directory record xdr 2142191783Srmacklem */ 2143191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 2144191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2145191783Srmacklem *tl++ = newnfs_true; 2146191783Srmacklem *tl++ = 0; 2147191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 2148191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2149191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2150191783Srmacklem *tl++ = 0; 2151191783Srmacklem *tl = txdr_unsigned(*cookiep); 2152191783Srmacklem nfsrv_postopattr(nd, 0, nvap); 2153191783Srmacklem dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1); 2154191783Srmacklem dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 2155191783Srmacklem if (nvp != NULL) 2156191783Srmacklem vput(nvp); 2157191783Srmacklem } else { 2158191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2159191783Srmacklem *tl++ = newnfs_true; 2160191783Srmacklem *tl++ = 0; 2161191783Srmacklem *tl = txdr_unsigned(*cookiep); 2162191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2163220648Srmacklem if (nvp != NULL) { 2164220648Srmacklem supports_nfsv4acls = 2165220648Srmacklem nfs_supportsnfsv4acls(nvp); 2166224082Szack NFSVOPUNLOCK(nvp, 0); 2167220648Srmacklem } else 2168220648Srmacklem supports_nfsv4acls = 0; 2169191783Srmacklem if (refp != NULL) { 2170191783Srmacklem dirlen += nfsrv_putreferralattr(nd, 2171191783Srmacklem &savbits, refp, 0, 2172191783Srmacklem &nd->nd_repstat); 2173191783Srmacklem if (nd->nd_repstat) { 2174191783Srmacklem if (nvp != NULL) 2175191783Srmacklem vrele(nvp); 2176220645Srmacklem if (needs_unbusy != 0) 2177220645Srmacklem vfs_unbusy(new_mp); 2178191783Srmacklem break; 2179191783Srmacklem } 2180191783Srmacklem } else if (r) { 2181220645Srmacklem dirlen += nfsvno_fillattr(nd, new_mp, 2182220645Srmacklem nvp, nvap, &nfh, r, &rderrbits, 2183220648Srmacklem nd->nd_cred, p, isdgram, 0, 2184220648Srmacklem supports_nfsv4acls, at_root, 2185220645Srmacklem mounted_on_fileno); 2186191783Srmacklem } else { 2187220645Srmacklem dirlen += nfsvno_fillattr(nd, new_mp, 2188220645Srmacklem nvp, nvap, &nfh, r, &attrbits, 2189220648Srmacklem nd->nd_cred, p, isdgram, 0, 2190220648Srmacklem supports_nfsv4acls, at_root, 2191220645Srmacklem mounted_on_fileno); 2192191783Srmacklem } 2193191783Srmacklem if (nvp != NULL) 2194191783Srmacklem vrele(nvp); 2195191783Srmacklem dirlen += (3 * NFSX_UNSIGNED); 2196191783Srmacklem } 2197220645Srmacklem if (needs_unbusy != 0) 2198220645Srmacklem vfs_unbusy(new_mp); 2199191783Srmacklem if (dirlen <= cnt) 2200191783Srmacklem entrycnt++; 2201191783Srmacklem } 2202191783Srmacklem cpos += dp->d_reclen; 2203191783Srmacklem dp = (struct dirent *)cpos; 2204191783Srmacklem cookiep++; 2205191783Srmacklem ncookies--; 2206191783Srmacklem } 2207216692Srmacklem vrele(vp); 2208217176Srmacklem vfs_unbusy(mp); 2209191783Srmacklem 2210191783Srmacklem /* 2211191783Srmacklem * If dirlen > cnt, we must strip off the last entry. If that 2212191783Srmacklem * results in an empty reply, report NFSERR_TOOSMALL. 2213191783Srmacklem */ 2214191783Srmacklem if (dirlen > cnt || nd->nd_repstat) { 2215191783Srmacklem if (!nd->nd_repstat && entrycnt == 0) 2216191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 2217191783Srmacklem if (nd->nd_repstat) 2218191783Srmacklem newnfs_trimtrailing(nd, mb0, bpos0); 2219191783Srmacklem else 2220191783Srmacklem newnfs_trimtrailing(nd, mb1, bpos1); 2221191783Srmacklem eofflag = 0; 2222191783Srmacklem } else if (cpos < cend) 2223191783Srmacklem eofflag = 0; 2224191783Srmacklem if (!nd->nd_repstat) { 2225191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2226191783Srmacklem *tl++ = newnfs_false; 2227191783Srmacklem if (eofflag) 2228191783Srmacklem *tl = newnfs_true; 2229191783Srmacklem else 2230191783Srmacklem *tl = newnfs_false; 2231191783Srmacklem } 2232191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 2233191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 2234224086Szack 2235224086Szackout: 2236224086Szack NFSEXITCODE2(0, nd); 2237191783Srmacklem return (0); 2238191783Srmacklemnfsmout: 2239191783Srmacklem vput(vp); 2240224086Szack NFSEXITCODE2(error, nd); 2241191783Srmacklem return (error); 2242191783Srmacklem} 2243191783Srmacklem 2244191783Srmacklem/* 2245191783Srmacklem * Get the settable attributes out of the mbuf list. 2246191783Srmacklem * (Return 0 or EBADRPC) 2247191783Srmacklem */ 2248191783Srmacklemint 2249191783Srmacklemnfsrv_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2250191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2251191783Srmacklem{ 2252191783Srmacklem u_int32_t *tl; 2253191783Srmacklem struct nfsv2_sattr *sp; 2254191783Srmacklem int error = 0, toclient = 0; 2255191783Srmacklem 2256191783Srmacklem switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 2257191783Srmacklem case ND_NFSV2: 2258191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2259191783Srmacklem /* 2260191783Srmacklem * Some old clients didn't fill in the high order 16bits. 2261191783Srmacklem * --> check the low order 2 bytes for 0xffff 2262191783Srmacklem */ 2263191783Srmacklem if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 2264191783Srmacklem nvap->na_mode = nfstov_mode(sp->sa_mode); 2265191783Srmacklem if (sp->sa_uid != newnfs_xdrneg1) 2266191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 2267191783Srmacklem if (sp->sa_gid != newnfs_xdrneg1) 2268191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 2269191783Srmacklem if (sp->sa_size != newnfs_xdrneg1) 2270191783Srmacklem nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 2271191783Srmacklem if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 2272191783Srmacklem#ifdef notyet 2273191783Srmacklem fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 2274191783Srmacklem#else 2275191783Srmacklem nvap->na_atime.tv_sec = 2276191783Srmacklem fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 2277191783Srmacklem nvap->na_atime.tv_nsec = 0; 2278191783Srmacklem#endif 2279191783Srmacklem } 2280191783Srmacklem if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 2281191783Srmacklem fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 2282191783Srmacklem break; 2283191783Srmacklem case ND_NFSV3: 2284191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2285191783Srmacklem if (*tl == newnfs_true) { 2286191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2287191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2288191783Srmacklem } 2289191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2290191783Srmacklem if (*tl == newnfs_true) { 2291191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2292191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, *tl); 2293191783Srmacklem } 2294191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2295191783Srmacklem if (*tl == newnfs_true) { 2296191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2297191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, *tl); 2298191783Srmacklem } 2299191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2300191783Srmacklem if (*tl == newnfs_true) { 2301191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2302191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2303191783Srmacklem } 2304191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2305191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2306191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2307191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2308191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_atime); 2309191783Srmacklem toclient = 1; 2310191783Srmacklem break; 2311191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2312245611Sjhb vfs_timestamp(&nvap->na_atime); 2313191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2314191783Srmacklem break; 2315191783Srmacklem }; 2316191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2317191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2318191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2319191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2320191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_mtime); 2321191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2322191783Srmacklem break; 2323191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2324245611Sjhb vfs_timestamp(&nvap->na_mtime); 2325191783Srmacklem if (!toclient) 2326191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2327191783Srmacklem break; 2328191783Srmacklem }; 2329191783Srmacklem break; 2330191783Srmacklem case ND_NFSV4: 2331191783Srmacklem error = nfsv4_sattr(nd, nvap, attrbitp, aclp, p); 2332191783Srmacklem }; 2333191783Srmacklemnfsmout: 2334224086Szack NFSEXITCODE2(error, nd); 2335191783Srmacklem return (error); 2336191783Srmacklem} 2337191783Srmacklem 2338191783Srmacklem/* 2339191783Srmacklem * Handle the setable attributes for V4. 2340191783Srmacklem * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 2341191783Srmacklem */ 2342191783Srmacklemint 2343191783Srmacklemnfsv4_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2344191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2345191783Srmacklem{ 2346191783Srmacklem u_int32_t *tl; 2347191783Srmacklem int attrsum = 0; 2348191783Srmacklem int i, j; 2349191783Srmacklem int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 2350191783Srmacklem int toclient = 0; 2351191783Srmacklem u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 2352191783Srmacklem uid_t uid; 2353191783Srmacklem gid_t gid; 2354191783Srmacklem 2355191783Srmacklem error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 2356191783Srmacklem if (error) 2357224086Szack goto nfsmout; 2358191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2359191783Srmacklem attrsize = fxdr_unsigned(int, *tl); 2360191783Srmacklem 2361191783Srmacklem /* 2362191783Srmacklem * Loop around getting the setable attributes. If an unsupported 2363191783Srmacklem * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 2364191783Srmacklem */ 2365191783Srmacklem if (retnotsup) { 2366191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2367191783Srmacklem bitpos = NFSATTRBIT_MAX; 2368191783Srmacklem } else { 2369191783Srmacklem bitpos = 0; 2370191783Srmacklem } 2371191783Srmacklem for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 2372191783Srmacklem if (attrsum > attrsize) { 2373191783Srmacklem error = NFSERR_BADXDR; 2374191783Srmacklem goto nfsmout; 2375191783Srmacklem } 2376191783Srmacklem if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 2377191783Srmacklem switch (bitpos) { 2378191783Srmacklem case NFSATTRBIT_SIZE: 2379191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2380191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2381191783Srmacklem attrsum += NFSX_HYPER; 2382191783Srmacklem break; 2383191783Srmacklem case NFSATTRBIT_ACL: 2384191783Srmacklem error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize, 2385191783Srmacklem p); 2386191783Srmacklem if (error) 2387191783Srmacklem goto nfsmout; 2388191783Srmacklem if (aceerr && !nd->nd_repstat) 2389224077Szack nd->nd_repstat = aceerr; 2390191783Srmacklem attrsum += aclsize; 2391191783Srmacklem break; 2392191783Srmacklem case NFSATTRBIT_ARCHIVE: 2393191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2394191783Srmacklem if (!nd->nd_repstat) 2395191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2396191783Srmacklem attrsum += NFSX_UNSIGNED; 2397191783Srmacklem break; 2398191783Srmacklem case NFSATTRBIT_HIDDEN: 2399191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2400191783Srmacklem if (!nd->nd_repstat) 2401191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2402191783Srmacklem attrsum += NFSX_UNSIGNED; 2403191783Srmacklem break; 2404191783Srmacklem case NFSATTRBIT_MIMETYPE: 2405191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2406191783Srmacklem i = fxdr_unsigned(int, *tl); 2407191783Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 2408191783Srmacklem if (error) 2409191783Srmacklem goto nfsmout; 2410191783Srmacklem if (!nd->nd_repstat) 2411191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2412191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 2413191783Srmacklem break; 2414191783Srmacklem case NFSATTRBIT_MODE: 2415191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2416191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2417191783Srmacklem attrsum += NFSX_UNSIGNED; 2418191783Srmacklem break; 2419191783Srmacklem case NFSATTRBIT_OWNER: 2420191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2421191783Srmacklem j = fxdr_unsigned(int, *tl); 2422224086Szack if (j < 0) { 2423224086Szack error = NFSERR_BADXDR; 2424224086Szack goto nfsmout; 2425224086Szack } 2426191783Srmacklem if (j > NFSV4_SMALLSTR) 2427191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2428191783Srmacklem else 2429191783Srmacklem cp = namestr; 2430191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2431191783Srmacklem if (error) { 2432191783Srmacklem if (j > NFSV4_SMALLSTR) 2433191783Srmacklem free(cp, M_NFSSTRING); 2434224086Szack goto nfsmout; 2435191783Srmacklem } 2436191783Srmacklem if (!nd->nd_repstat) { 2437240720Srmacklem nd->nd_repstat = nfsv4_strtouid(nd, cp, j, &uid, 2438240720Srmacklem p); 2439191783Srmacklem if (!nd->nd_repstat) 2440191783Srmacklem nvap->na_uid = uid; 2441191783Srmacklem } 2442191783Srmacklem if (j > NFSV4_SMALLSTR) 2443191783Srmacklem free(cp, M_NFSSTRING); 2444191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2445191783Srmacklem break; 2446191783Srmacklem case NFSATTRBIT_OWNERGROUP: 2447191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2448191783Srmacklem j = fxdr_unsigned(int, *tl); 2449224086Szack if (j < 0) { 2450224086Szack error = NFSERR_BADXDR; 2451224086Szack goto nfsmout; 2452224086Szack } 2453191783Srmacklem if (j > NFSV4_SMALLSTR) 2454191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2455191783Srmacklem else 2456191783Srmacklem cp = namestr; 2457191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2458191783Srmacklem if (error) { 2459191783Srmacklem if (j > NFSV4_SMALLSTR) 2460191783Srmacklem free(cp, M_NFSSTRING); 2461224086Szack goto nfsmout; 2462191783Srmacklem } 2463191783Srmacklem if (!nd->nd_repstat) { 2464240720Srmacklem nd->nd_repstat = nfsv4_strtogid(nd, cp, j, &gid, 2465240720Srmacklem p); 2466191783Srmacklem if (!nd->nd_repstat) 2467191783Srmacklem nvap->na_gid = gid; 2468191783Srmacklem } 2469191783Srmacklem if (j > NFSV4_SMALLSTR) 2470191783Srmacklem free(cp, M_NFSSTRING); 2471191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2472191783Srmacklem break; 2473191783Srmacklem case NFSATTRBIT_SYSTEM: 2474191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2475191783Srmacklem if (!nd->nd_repstat) 2476191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2477191783Srmacklem attrsum += NFSX_UNSIGNED; 2478191783Srmacklem break; 2479191783Srmacklem case NFSATTRBIT_TIMEACCESSSET: 2480191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2481191783Srmacklem attrsum += NFSX_UNSIGNED; 2482191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2483191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2484191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_atime); 2485191783Srmacklem toclient = 1; 2486191783Srmacklem attrsum += NFSX_V4TIME; 2487191783Srmacklem } else { 2488245611Sjhb vfs_timestamp(&nvap->na_atime); 2489191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2490191783Srmacklem } 2491191783Srmacklem break; 2492191783Srmacklem case NFSATTRBIT_TIMEBACKUP: 2493191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2494191783Srmacklem if (!nd->nd_repstat) 2495191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2496191783Srmacklem attrsum += NFSX_V4TIME; 2497191783Srmacklem break; 2498191783Srmacklem case NFSATTRBIT_TIMECREATE: 2499191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2500191783Srmacklem if (!nd->nd_repstat) 2501191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2502191783Srmacklem attrsum += NFSX_V4TIME; 2503191783Srmacklem break; 2504191783Srmacklem case NFSATTRBIT_TIMEMODIFYSET: 2505191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2506191783Srmacklem attrsum += NFSX_UNSIGNED; 2507191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2508191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2509191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_mtime); 2510191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2511191783Srmacklem attrsum += NFSX_V4TIME; 2512191783Srmacklem } else { 2513245611Sjhb vfs_timestamp(&nvap->na_mtime); 2514191783Srmacklem if (!toclient) 2515191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2516191783Srmacklem } 2517191783Srmacklem break; 2518191783Srmacklem default: 2519191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2520191783Srmacklem /* 2521191783Srmacklem * set bitpos so we drop out of the loop. 2522191783Srmacklem */ 2523191783Srmacklem bitpos = NFSATTRBIT_MAX; 2524191783Srmacklem break; 2525191783Srmacklem }; 2526191783Srmacklem } 2527191783Srmacklem 2528191783Srmacklem /* 2529191783Srmacklem * some clients pad the attrlist, so we need to skip over the 2530191783Srmacklem * padding. 2531191783Srmacklem */ 2532191783Srmacklem if (attrsum > attrsize) { 2533191783Srmacklem error = NFSERR_BADXDR; 2534191783Srmacklem } else { 2535191783Srmacklem attrsize = NFSM_RNDUP(attrsize); 2536191783Srmacklem if (attrsum < attrsize) 2537191783Srmacklem error = nfsm_advance(nd, attrsize - attrsum, -1); 2538191783Srmacklem } 2539191783Srmacklemnfsmout: 2540224086Szack NFSEXITCODE2(error, nd); 2541191783Srmacklem return (error); 2542191783Srmacklem} 2543191783Srmacklem 2544191783Srmacklem/* 2545191783Srmacklem * Check/setup export credentials. 2546191783Srmacklem */ 2547191783Srmacklemint 2548191783Srmacklemnfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 2549191783Srmacklem struct ucred *credanon) 2550191783Srmacklem{ 2551191783Srmacklem int error = 0; 2552191783Srmacklem 2553191783Srmacklem /* 2554191783Srmacklem * Check/setup credentials. 2555191783Srmacklem */ 2556191783Srmacklem if (nd->nd_flag & ND_GSS) 2557192121Srmacklem exp->nes_exflag &= ~MNT_EXPORTANON; 2558191783Srmacklem 2559191783Srmacklem /* 2560192121Srmacklem * Check to see if the operation is allowed for this security flavor. 2561191783Srmacklem * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to 2562191783Srmacklem * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 2563192121Srmacklem * Also, allow Secinfo, so that it can acquire the correct flavor(s). 2564191783Srmacklem */ 2565192121Srmacklem if (nfsvno_testexp(nd, exp) && 2566192121Srmacklem nd->nd_procnum != NFSV4OP_SECINFO && 2567191783Srmacklem nd->nd_procnum != NFSPROC_FSINFO) { 2568191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2569191783Srmacklem error = NFSERR_WRONGSEC; 2570191783Srmacklem else 2571191783Srmacklem error = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2572224086Szack goto out; 2573191783Srmacklem } 2574191783Srmacklem 2575191783Srmacklem /* 2576191783Srmacklem * Check to see if the file system is exported V4 only. 2577191783Srmacklem */ 2578224086Szack if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) { 2579224086Szack error = NFSERR_PROGNOTV4; 2580224086Szack goto out; 2581224086Szack } 2582191783Srmacklem 2583191783Srmacklem /* 2584191783Srmacklem * Now, map the user credentials. 2585191783Srmacklem * (Note that ND_AUTHNONE will only be set for an NFSv3 2586191783Srmacklem * Fsinfo RPC. If set for anything else, this code might need 2587191783Srmacklem * to change.) 2588191783Srmacklem */ 2589191783Srmacklem if (NFSVNO_EXPORTED(exp) && 2590191783Srmacklem ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) || 2591191783Srmacklem NFSVNO_EXPORTANON(exp) || 2592191783Srmacklem (nd->nd_flag & ND_AUTHNONE))) { 2593191783Srmacklem nd->nd_cred->cr_uid = credanon->cr_uid; 2594191783Srmacklem nd->nd_cred->cr_gid = credanon->cr_gid; 2595194498Sbrooks crsetgroups(nd->nd_cred, credanon->cr_ngroups, 2596194498Sbrooks credanon->cr_groups); 2597191783Srmacklem } 2598224086Szack 2599224086Szackout: 2600224086Szack NFSEXITCODE2(error, nd); 2601224086Szack return (error); 2602191783Srmacklem} 2603191783Srmacklem 2604191783Srmacklem/* 2605191783Srmacklem * Check exports. 2606191783Srmacklem */ 2607191783Srmacklemint 2608191783Srmacklemnfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 2609191783Srmacklem struct ucred **credp) 2610191783Srmacklem{ 2611192121Srmacklem int i, error, *secflavors; 2612191783Srmacklem 2613191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2614192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2615192121Srmacklem if (error) { 2616192121Srmacklem if (nfs_rootfhset) { 2617192121Srmacklem exp->nes_exflag = 0; 2618192121Srmacklem exp->nes_numsecflavor = 0; 2619192121Srmacklem error = 0; 2620192121Srmacklem } 2621192121Srmacklem } else { 2622192121Srmacklem /* Copy the security flavors. */ 2623192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2624192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2625191783Srmacklem } 2626224086Szack NFSEXITCODE(error); 2627191783Srmacklem return (error); 2628191783Srmacklem} 2629191783Srmacklem 2630191783Srmacklem/* 2631191783Srmacklem * Get a vnode for a file handle and export stuff. 2632191783Srmacklem */ 2633191783Srmacklemint 2634191783Srmacklemnfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 2635216700Srmacklem int lktype, struct vnode **vpp, struct nfsexstuff *exp, 2636216700Srmacklem struct ucred **credp) 2637191783Srmacklem{ 2638192121Srmacklem int i, error, *secflavors; 2639191783Srmacklem 2640191998Srmacklem *credp = NULL; 2641192121Srmacklem exp->nes_numsecflavor = 0; 2642241896Skib error = VFS_FHTOVP(mp, &fhp->fh_fid, lktype, vpp); 2643205663Srmacklem if (error != 0) 2644205663Srmacklem /* Make sure the server replies ESTALE to the client. */ 2645205663Srmacklem error = ESTALE; 2646191783Srmacklem if (nam && !error) { 2647191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2648192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2649191783Srmacklem if (error) { 2650191783Srmacklem if (nfs_rootfhset) { 2651191783Srmacklem exp->nes_exflag = 0; 2652192121Srmacklem exp->nes_numsecflavor = 0; 2653191783Srmacklem error = 0; 2654191783Srmacklem } else { 2655191783Srmacklem vput(*vpp); 2656191783Srmacklem } 2657192121Srmacklem } else { 2658192121Srmacklem /* Copy the security flavors. */ 2659192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2660192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2661191783Srmacklem } 2662191783Srmacklem } 2663224086Szack NFSEXITCODE(error); 2664191783Srmacklem return (error); 2665191783Srmacklem} 2666191783Srmacklem 2667191783Srmacklem/* 2668191783Srmacklem * nfsd_fhtovp() - convert a fh to a vnode ptr 2669191783Srmacklem * - look up fsid in mount list (if not found ret error) 2670191783Srmacklem * - get vp and export rights by calling nfsvno_fhtovp() 2671191783Srmacklem * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2672191783Srmacklem * for AUTH_SYS 2673217063Srmacklem * - if mpp != NULL, return the mount point so that it can 2674217063Srmacklem * be used for vn_finished_write() by the caller 2675191783Srmacklem */ 2676191783Srmacklemvoid 2677216700Srmacklemnfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype, 2678191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, 2679191783Srmacklem struct mount **mpp, int startwrite, struct thread *p) 2680191783Srmacklem{ 2681191783Srmacklem struct mount *mp; 2682191783Srmacklem struct ucred *credanon; 2683191783Srmacklem fhandle_t *fhp; 2684191783Srmacklem 2685191783Srmacklem fhp = (fhandle_t *)nfp->nfsrvfh_data; 2686191783Srmacklem /* 2687191783Srmacklem * Check for the special case of the nfsv4root_fh. 2688191783Srmacklem */ 2689217017Srmacklem mp = vfs_busyfs(&fhp->fh_fsid); 2690217063Srmacklem if (mpp != NULL) 2691217063Srmacklem *mpp = mp; 2692217017Srmacklem if (mp == NULL) { 2693191783Srmacklem *vpp = NULL; 2694191783Srmacklem nd->nd_repstat = ESTALE; 2695224086Szack goto out; 2696191783Srmacklem } 2697191783Srmacklem 2698249592Sken if (startwrite) { 2699191783Srmacklem vn_start_write(NULL, mpp, V_WAIT); 2700249592Sken if (lktype == LK_SHARED && !(MNT_SHARED_WRITES(mp))) 2701249592Sken lktype = LK_EXCLUSIVE; 2702249592Sken } 2703216700Srmacklem nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp, 2704191783Srmacklem &credanon); 2705217017Srmacklem vfs_unbusy(mp); 2706191783Srmacklem 2707191783Srmacklem /* 2708191783Srmacklem * For NFSv4 without a pseudo root fs, unexported file handles 2709191783Srmacklem * can be returned, so that Lookup works everywhere. 2710191783Srmacklem */ 2711191783Srmacklem if (!nd->nd_repstat && exp->nes_exflag == 0 && 2712191783Srmacklem !(nd->nd_flag & ND_NFSV4)) { 2713191783Srmacklem vput(*vpp); 2714191783Srmacklem nd->nd_repstat = EACCES; 2715191783Srmacklem } 2716191783Srmacklem 2717191783Srmacklem /* 2718191783Srmacklem * Personally, I've never seen any point in requiring a 2719191783Srmacklem * reserved port#, since only in the rare case where the 2720191783Srmacklem * clients are all boxes with secure system priviledges, 2721191783Srmacklem * does it provide any enhanced security, but... some people 2722191783Srmacklem * believe it to be useful and keep putting this code back in. 2723191783Srmacklem * (There is also some "security checker" out there that 2724191783Srmacklem * complains if the nfs server doesn't enforce this.) 2725191783Srmacklem * However, note the following: 2726191783Srmacklem * RFC3530 (NFSv4) specifies that a reserved port# not be 2727191783Srmacklem * required. 2728191783Srmacklem * RFC2623 recommends that, if a reserved port# is checked for, 2729191783Srmacklem * that there be a way to turn that off--> ifdef'd. 2730191783Srmacklem */ 2731191783Srmacklem#ifdef NFS_REQRSVPORT 2732191783Srmacklem if (!nd->nd_repstat) { 2733192121Srmacklem struct sockaddr_in *saddr; 2734192121Srmacklem struct sockaddr_in6 *saddr6; 2735192121Srmacklem 2736192121Srmacklem saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 2737192121Srmacklem saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 2738192121Srmacklem if (!(nd->nd_flag & ND_NFSV4) && 2739192121Srmacklem ((saddr->sin_family == AF_INET && 2740192121Srmacklem ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 2741192121Srmacklem (saddr6->sin6_family == AF_INET6 && 2742192121Srmacklem ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 2743192121Srmacklem vput(*vpp); 2744192121Srmacklem nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2745192121Srmacklem } 2746191783Srmacklem } 2747191783Srmacklem#endif /* NFS_REQRSVPORT */ 2748191783Srmacklem 2749191783Srmacklem /* 2750191783Srmacklem * Check/setup credentials. 2751191783Srmacklem */ 2752191783Srmacklem if (!nd->nd_repstat) { 2753191783Srmacklem nd->nd_saveduid = nd->nd_cred->cr_uid; 2754191783Srmacklem nd->nd_repstat = nfsd_excred(nd, exp, credanon); 2755191783Srmacklem if (nd->nd_repstat) 2756191783Srmacklem vput(*vpp); 2757191783Srmacklem } 2758191940Skan if (credanon != NULL) 2759191940Skan crfree(credanon); 2760191783Srmacklem if (nd->nd_repstat) { 2761191783Srmacklem if (startwrite) 2762191783Srmacklem vn_finished_write(mp); 2763191783Srmacklem *vpp = NULL; 2764217063Srmacklem if (mpp != NULL) 2765217063Srmacklem *mpp = NULL; 2766191783Srmacklem } 2767224086Szack 2768224086Szackout: 2769224086Szack NFSEXITCODE2(0, nd); 2770191783Srmacklem} 2771191783Srmacklem 2772191783Srmacklem/* 2773191783Srmacklem * glue for fp. 2774191783Srmacklem */ 2775247602Spjdstatic int 2776191783Srmacklemfp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 2777191783Srmacklem{ 2778191783Srmacklem struct filedesc *fdp; 2779191783Srmacklem struct file *fp; 2780224086Szack int error = 0; 2781191783Srmacklem 2782191783Srmacklem fdp = p->td_proc->p_fd; 2783247602Spjd if (fd < 0 || fd >= fdp->fd_nfiles || 2784247602Spjd (fp = fdp->fd_ofiles[fd].fde_file) == NULL) { 2785224086Szack error = EBADF; 2786224086Szack goto out; 2787224086Szack } 2788191783Srmacklem *fpp = fp; 2789224086Szack 2790224086Szackout: 2791224086Szack NFSEXITCODE(error); 2792224086Szack return (error); 2793191783Srmacklem} 2794191783Srmacklem 2795191783Srmacklem/* 2796192121Srmacklem * Called from nfssvc() to update the exports list. Just call 2797191783Srmacklem * vfs_export(). This has to be done, since the v4 root fake fs isn't 2798191783Srmacklem * in the mount list. 2799191783Srmacklem */ 2800191783Srmacklemint 2801191783Srmacklemnfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 2802191783Srmacklem{ 2803191783Srmacklem struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 2804224086Szack int error = 0; 2805191783Srmacklem struct nameidata nd; 2806191783Srmacklem fhandle_t fh; 2807191783Srmacklem 2808191783Srmacklem error = vfs_export(&nfsv4root_mnt, &nfsexargp->export); 2809216894Srmacklem if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0) 2810191783Srmacklem nfs_rootfhset = 0; 2811216894Srmacklem else if (error == 0) { 2812224086Szack if (nfsexargp->fspec == NULL) { 2813224086Szack error = EPERM; 2814224086Szack goto out; 2815224086Szack } 2816191783Srmacklem /* 2817191783Srmacklem * If fspec != NULL, this is the v4root path. 2818191783Srmacklem */ 2819241896Skib NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, 2820191783Srmacklem nfsexargp->fspec, p); 2821191783Srmacklem if ((error = namei(&nd)) != 0) 2822224086Szack goto out; 2823191783Srmacklem error = nfsvno_getfh(nd.ni_vp, &fh, p); 2824191783Srmacklem vrele(nd.ni_vp); 2825191783Srmacklem if (!error) { 2826191783Srmacklem nfs_rootfh.nfsrvfh_len = NFSX_MYFH; 2827191783Srmacklem NFSBCOPY((caddr_t)&fh, 2828191783Srmacklem nfs_rootfh.nfsrvfh_data, 2829191783Srmacklem sizeof (fhandle_t)); 2830191783Srmacklem nfs_rootfhset = 1; 2831191783Srmacklem } 2832191783Srmacklem } 2833224086Szack 2834224086Szackout: 2835224086Szack NFSEXITCODE(error); 2836191783Srmacklem return (error); 2837191783Srmacklem} 2838191783Srmacklem 2839191783Srmacklem/* 2840191783Srmacklem * Get the tcp socket sequence numbers we need. 2841191783Srmacklem * (Maybe this should be moved to the tcp sources?) 2842191783Srmacklem */ 2843191783Srmacklemint 2844191783Srmacklemnfsrv_getsocksndseq(struct socket *so, tcp_seq *maxp, tcp_seq *unap) 2845191783Srmacklem{ 2846191783Srmacklem struct inpcb *inp; 2847191783Srmacklem struct tcpcb *tp; 2848224086Szack int error = 0; 2849191783Srmacklem 2850191783Srmacklem inp = sotoinpcb(so); 2851205010Srwatson KASSERT(inp != NULL, ("nfsrv_getsocksndseq: inp == NULL")); 2852205010Srwatson INP_RLOCK(inp); 2853205010Srwatson if (inp->inp_flags & (INP_TIMEWAIT | INP_DROPPED)) { 2854205010Srwatson INP_RUNLOCK(inp); 2855224086Szack error = EPIPE; 2856224086Szack goto out; 2857191783Srmacklem } 2858191783Srmacklem tp = intotcpcb(inp); 2859205010Srwatson if (tp->t_state != TCPS_ESTABLISHED) { 2860205010Srwatson INP_RUNLOCK(inp); 2861224086Szack error = EPIPE; 2862224086Szack goto out; 2863191783Srmacklem } 2864205010Srwatson *maxp = tp->snd_max; 2865205010Srwatson *unap = tp->snd_una; 2866191783Srmacklem INP_RUNLOCK(inp); 2867224086Szack 2868224086Szackout: 2869224086Szack NFSEXITCODE(error); 2870224086Szack return (error); 2871191783Srmacklem} 2872191783Srmacklem 2873191783Srmacklem/* 2874191783Srmacklem * This function needs to test to see if the system is near its limit 2875191783Srmacklem * for memory allocation via malloc() or mget() and return True iff 2876191783Srmacklem * either of these resources are near their limit. 2877191783Srmacklem * XXX (For now, this is just a stub.) 2878191783Srmacklem */ 2879191783Srmacklemint nfsrv_testmalloclimit = 0; 2880191783Srmacklemint 2881191783Srmacklemnfsrv_mallocmget_limit(void) 2882191783Srmacklem{ 2883191783Srmacklem static int printmesg = 0; 2884191783Srmacklem static int testval = 1; 2885191783Srmacklem 2886191783Srmacklem if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 2887191783Srmacklem if ((printmesg++ % 100) == 0) 2888191783Srmacklem printf("nfsd: malloc/mget near limit\n"); 2889191783Srmacklem return (1); 2890191783Srmacklem } 2891191783Srmacklem return (0); 2892191783Srmacklem} 2893191783Srmacklem 2894191783Srmacklem/* 2895191783Srmacklem * BSD specific initialization of a mount point. 2896191783Srmacklem */ 2897191783Srmacklemvoid 2898191783Srmacklemnfsd_mntinit(void) 2899191783Srmacklem{ 2900191783Srmacklem static int inited = 0; 2901191783Srmacklem 2902191783Srmacklem if (inited) 2903191783Srmacklem return; 2904191783Srmacklem inited = 1; 2905191783Srmacklem nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 2906191783Srmacklem TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist); 2907234482Smckusick TAILQ_INIT(&nfsv4root_mnt.mnt_activevnodelist); 2908191783Srmacklem nfsv4root_mnt.mnt_export = NULL; 2909191783Srmacklem TAILQ_INIT(&nfsv4root_opt); 2910191783Srmacklem TAILQ_INIT(&nfsv4root_newopt); 2911191783Srmacklem nfsv4root_mnt.mnt_opt = &nfsv4root_opt; 2912191783Srmacklem nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt; 2913191783Srmacklem nfsv4root_mnt.mnt_nvnodelistsize = 0; 2914234482Smckusick nfsv4root_mnt.mnt_activevnodelistsize = 0; 2915191783Srmacklem} 2916191783Srmacklem 2917191783Srmacklem/* 2918191783Srmacklem * Get a vnode for a file handle, without checking exports, etc. 2919191783Srmacklem */ 2920191783Srmacklemstruct vnode * 2921191783Srmacklemnfsvno_getvp(fhandle_t *fhp) 2922191783Srmacklem{ 2923191783Srmacklem struct mount *mp; 2924191783Srmacklem struct vnode *vp; 2925191783Srmacklem int error; 2926191783Srmacklem 2927217017Srmacklem mp = vfs_busyfs(&fhp->fh_fsid); 2928191783Srmacklem if (mp == NULL) 2929191783Srmacklem return (NULL); 2930222167Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp); 2931217017Srmacklem vfs_unbusy(mp); 2932191783Srmacklem if (error) 2933191783Srmacklem return (NULL); 2934191783Srmacklem return (vp); 2935191783Srmacklem} 2936191783Srmacklem 2937191783Srmacklem/* 2938191783Srmacklem * Do a local VOP_ADVLOCK(). 2939191783Srmacklem */ 2940191783Srmacklemint 2941191783Srmacklemnfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 2942192256Srmacklem u_int64_t end, struct thread *td) 2943191783Srmacklem{ 2944224086Szack int error = 0; 2945191783Srmacklem struct flock fl; 2946191783Srmacklem u_int64_t tlen; 2947191783Srmacklem 2948212833Srmacklem if (nfsrv_dolocallocks == 0) 2949224086Szack goto out; 2950216893Srmacklem 2951216893Srmacklem /* Check for VI_DOOMED here, so that VOP_ADVLOCK() isn't performed. */ 2952224086Szack if ((vp->v_iflag & VI_DOOMED) != 0) { 2953224086Szack error = EPERM; 2954224086Szack goto out; 2955224086Szack } 2956216893Srmacklem 2957191783Srmacklem fl.l_whence = SEEK_SET; 2958191783Srmacklem fl.l_type = ftype; 2959191783Srmacklem fl.l_start = (off_t)first; 2960191783Srmacklem if (end == NFS64BITSSET) { 2961191783Srmacklem fl.l_len = 0; 2962191783Srmacklem } else { 2963191783Srmacklem tlen = end - first; 2964191783Srmacklem fl.l_len = (off_t)tlen; 2965191783Srmacklem } 2966191783Srmacklem /* 2967192256Srmacklem * For FreeBSD8, the l_pid and l_sysid must be set to the same 2968192256Srmacklem * values for all calls, so that all locks will be held by the 2969192256Srmacklem * nfsd server. (The nfsd server handles conflicts between the 2970192256Srmacklem * various clients.) 2971192256Srmacklem * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 2972192256Srmacklem * bytes, so it can't be put in l_sysid. 2973191783Srmacklem */ 2974192503Srmacklem if (nfsv4_sysid == 0) 2975192503Srmacklem nfsv4_sysid = nlm_acquire_next_sysid(); 2976192256Srmacklem fl.l_pid = (pid_t)0; 2977192503Srmacklem fl.l_sysid = (int)nfsv4_sysid; 2978192256Srmacklem 2979224080Szack NFSVOPUNLOCK(vp, 0); 2980212833Srmacklem if (ftype == F_UNLCK) 2981212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, 2982212833Srmacklem (F_POSIX | F_REMOTE)); 2983212833Srmacklem else 2984212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 2985212833Srmacklem (F_POSIX | F_REMOTE)); 2986224080Szack NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY); 2987224086Szack 2988224086Szackout: 2989224086Szack NFSEXITCODE(error); 2990191783Srmacklem return (error); 2991191783Srmacklem} 2992191783Srmacklem 2993191783Srmacklem/* 2994191783Srmacklem * Check the nfsv4 root exports. 2995191783Srmacklem */ 2996191783Srmacklemint 2997191783Srmacklemnfsvno_v4rootexport(struct nfsrv_descript *nd) 2998191783Srmacklem{ 2999191783Srmacklem struct ucred *credanon; 3000224086Szack int exflags, error = 0, numsecflavor, *secflavors, i; 3001191783Srmacklem 3002191783Srmacklem error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags, 3003192121Srmacklem &credanon, &numsecflavor, &secflavors); 3004224086Szack if (error) { 3005224086Szack error = NFSERR_PROGUNAVAIL; 3006224086Szack goto out; 3007224086Szack } 3008191940Skan if (credanon != NULL) 3009191940Skan crfree(credanon); 3010192121Srmacklem for (i = 0; i < numsecflavor; i++) { 3011192121Srmacklem if (secflavors[i] == AUTH_SYS) 3012192121Srmacklem nd->nd_flag |= ND_EXAUTHSYS; 3013192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5) 3014192121Srmacklem nd->nd_flag |= ND_EXGSS; 3015192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5I) 3016192121Srmacklem nd->nd_flag |= ND_EXGSSINTEGRITY; 3017192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5P) 3018192121Srmacklem nd->nd_flag |= ND_EXGSSPRIVACY; 3019192121Srmacklem } 3020224086Szack 3021224086Szackout: 3022224086Szack NFSEXITCODE(error); 3023224086Szack return (error); 3024191783Srmacklem} 3025191783Srmacklem 3026191783Srmacklem/* 3027191783Srmacklem * Nfs server psuedo system call for the nfsd's 3028191783Srmacklem */ 3029191783Srmacklem/* 3030191783Srmacklem * MPSAFE 3031191783Srmacklem */ 3032191783Srmacklemstatic int 3033191783Srmacklemnfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 3034191783Srmacklem{ 3035191783Srmacklem struct file *fp; 3036192017Srmacklem struct nfsd_addsock_args sockarg; 3037192017Srmacklem struct nfsd_nfsd_args nfsdarg; 3038255219Spjd cap_rights_t rights; 3039191783Srmacklem int error; 3040191783Srmacklem 3041191783Srmacklem if (uap->flag & NFSSVC_NFSDADDSOCK) { 3042192017Srmacklem error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 3043191783Srmacklem if (error) 3044224086Szack goto out; 3045224778Srwatson /* 3046224778Srwatson * Since we don't know what rights might be required, 3047224778Srwatson * pretend that we need them all. It is better to be too 3048224778Srwatson * careful than too reckless. 3049224778Srwatson */ 3050255219Spjd error = fget(td, sockarg.sock, 3051255219Spjd cap_rights_init(&rights, CAP_SOCK_SERVER), &fp); 3052255219Spjd if (error != 0) 3053224086Szack goto out; 3054191783Srmacklem if (fp->f_type != DTYPE_SOCKET) { 3055191783Srmacklem fdrop(fp, td); 3056224086Szack error = EPERM; 3057224086Szack goto out; 3058191783Srmacklem } 3059191783Srmacklem error = nfsrvd_addsock(fp); 3060191783Srmacklem fdrop(fp, td); 3061191783Srmacklem } else if (uap->flag & NFSSVC_NFSDNFSD) { 3062224086Szack if (uap->argp == NULL) { 3063224086Szack error = EINVAL; 3064224086Szack goto out; 3065224086Szack } 3066192017Srmacklem error = copyin(uap->argp, (caddr_t)&nfsdarg, 3067192017Srmacklem sizeof (nfsdarg)); 3068192017Srmacklem if (error) 3069224086Szack goto out; 3070192017Srmacklem error = nfsrvd_nfsd(td, &nfsdarg); 3071191783Srmacklem } else { 3072191783Srmacklem error = nfssvc_srvcall(td, uap, td->td_ucred); 3073191783Srmacklem } 3074224086Szack 3075224086Szackout: 3076224086Szack NFSEXITCODE(error); 3077191783Srmacklem return (error); 3078191783Srmacklem} 3079191783Srmacklem 3080191783Srmacklemstatic int 3081191783Srmacklemnfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 3082191783Srmacklem{ 3083191783Srmacklem struct nfsex_args export; 3084191783Srmacklem struct file *fp = NULL; 3085191783Srmacklem int stablefd, len; 3086191783Srmacklem struct nfsd_clid adminrevoke; 3087191783Srmacklem struct nfsd_dumplist dumplist; 3088191783Srmacklem struct nfsd_dumpclients *dumpclients; 3089191783Srmacklem struct nfsd_dumplocklist dumplocklist; 3090191783Srmacklem struct nfsd_dumplocks *dumplocks; 3091191783Srmacklem struct nameidata nd; 3092191783Srmacklem vnode_t vp; 3093241561Srmacklem int error = EINVAL, igotlock; 3094217432Srmacklem struct proc *procp; 3095241561Srmacklem static int suspend_nfsd = 0; 3096191783Srmacklem 3097191783Srmacklem if (uap->flag & NFSSVC_PUBLICFH) { 3098191783Srmacklem NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 3099191783Srmacklem sizeof (fhandle_t)); 3100191783Srmacklem error = copyin(uap->argp, 3101191783Srmacklem &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 3102191783Srmacklem if (!error) 3103191783Srmacklem nfs_pubfhset = 1; 3104191783Srmacklem } else if (uap->flag & NFSSVC_V4ROOTEXPORT) { 3105191783Srmacklem error = copyin(uap->argp,(caddr_t)&export, 3106191783Srmacklem sizeof (struct nfsex_args)); 3107191783Srmacklem if (!error) 3108191783Srmacklem error = nfsrv_v4rootexport(&export, cred, p); 3109191783Srmacklem } else if (uap->flag & NFSSVC_NOPUBLICFH) { 3110191783Srmacklem nfs_pubfhset = 0; 3111191783Srmacklem error = 0; 3112191783Srmacklem } else if (uap->flag & NFSSVC_STABLERESTART) { 3113191783Srmacklem error = copyin(uap->argp, (caddr_t)&stablefd, 3114191783Srmacklem sizeof (int)); 3115191783Srmacklem if (!error) 3116191783Srmacklem error = fp_getfvp(p, stablefd, &fp, &vp); 3117191783Srmacklem if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 3118191783Srmacklem error = EBADF; 3119191783Srmacklem if (!error && newnfs_numnfsd != 0) 3120191783Srmacklem error = EPERM; 3121191783Srmacklem if (!error) { 3122191783Srmacklem nfsrv_stablefirst.nsf_fp = fp; 3123191783Srmacklem nfsrv_setupstable(p); 3124191783Srmacklem } 3125191783Srmacklem } else if (uap->flag & NFSSVC_ADMINREVOKE) { 3126191783Srmacklem error = copyin(uap->argp, (caddr_t)&adminrevoke, 3127191783Srmacklem sizeof (struct nfsd_clid)); 3128191783Srmacklem if (!error) 3129191783Srmacklem error = nfsrv_adminrevoke(&adminrevoke, p); 3130191783Srmacklem } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 3131191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplist, 3132191783Srmacklem sizeof (struct nfsd_dumplist)); 3133191783Srmacklem if (!error && (dumplist.ndl_size < 1 || 3134191783Srmacklem dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 3135191783Srmacklem error = EPERM; 3136191783Srmacklem if (!error) { 3137191783Srmacklem len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 3138191783Srmacklem dumpclients = (struct nfsd_dumpclients *)malloc(len, 3139191783Srmacklem M_TEMP, M_WAITOK); 3140191783Srmacklem nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 3141191783Srmacklem error = copyout(dumpclients, 3142191783Srmacklem CAST_USER_ADDR_T(dumplist.ndl_list), len); 3143191783Srmacklem free((caddr_t)dumpclients, M_TEMP); 3144191783Srmacklem } 3145191783Srmacklem } else if (uap->flag & NFSSVC_DUMPLOCKS) { 3146191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplocklist, 3147191783Srmacklem sizeof (struct nfsd_dumplocklist)); 3148191783Srmacklem if (!error && (dumplocklist.ndllck_size < 1 || 3149191783Srmacklem dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 3150191783Srmacklem error = EPERM; 3151191783Srmacklem if (!error) 3152191783Srmacklem error = nfsrv_lookupfilename(&nd, 3153191783Srmacklem dumplocklist.ndllck_fname, p); 3154191783Srmacklem if (!error) { 3155191783Srmacklem len = sizeof (struct nfsd_dumplocks) * 3156191783Srmacklem dumplocklist.ndllck_size; 3157191783Srmacklem dumplocks = (struct nfsd_dumplocks *)malloc(len, 3158191783Srmacklem M_TEMP, M_WAITOK); 3159191783Srmacklem nfsrv_dumplocks(nd.ni_vp, dumplocks, 3160191783Srmacklem dumplocklist.ndllck_size, p); 3161191783Srmacklem vput(nd.ni_vp); 3162191783Srmacklem error = copyout(dumplocks, 3163191783Srmacklem CAST_USER_ADDR_T(dumplocklist.ndllck_list), len); 3164191783Srmacklem free((caddr_t)dumplocks, M_TEMP); 3165191783Srmacklem } 3166217432Srmacklem } else if (uap->flag & NFSSVC_BACKUPSTABLE) { 3167217432Srmacklem procp = p->td_proc; 3168217432Srmacklem PROC_LOCK(procp); 3169217432Srmacklem nfsd_master_pid = procp->p_pid; 3170217432Srmacklem bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1); 3171217432Srmacklem nfsd_master_start = procp->p_stats->p_start; 3172217432Srmacklem nfsd_master_proc = procp; 3173217432Srmacklem PROC_UNLOCK(procp); 3174241561Srmacklem } else if ((uap->flag & NFSSVC_SUSPENDNFSD) != 0) { 3175241561Srmacklem NFSLOCKV4ROOTMUTEX(); 3176241561Srmacklem if (suspend_nfsd == 0) { 3177241561Srmacklem /* Lock out all nfsd threads */ 3178241561Srmacklem do { 3179241561Srmacklem igotlock = nfsv4_lock(&nfsd_suspend_lock, 1, 3180241561Srmacklem NULL, NFSV4ROOTLOCKMUTEXPTR, NULL); 3181241561Srmacklem } while (igotlock == 0 && suspend_nfsd == 0); 3182241561Srmacklem suspend_nfsd = 1; 3183241561Srmacklem } 3184241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 3185241561Srmacklem error = 0; 3186241561Srmacklem } else if ((uap->flag & NFSSVC_RESUMENFSD) != 0) { 3187241561Srmacklem NFSLOCKV4ROOTMUTEX(); 3188241561Srmacklem if (suspend_nfsd != 0) { 3189241561Srmacklem nfsv4_unlock(&nfsd_suspend_lock, 0); 3190241561Srmacklem suspend_nfsd = 0; 3191241561Srmacklem } 3192241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 3193241561Srmacklem error = 0; 3194191783Srmacklem } 3195224086Szack 3196224086Szack NFSEXITCODE(error); 3197191783Srmacklem return (error); 3198191783Srmacklem} 3199191783Srmacklem 3200192121Srmacklem/* 3201192121Srmacklem * Check exports. 3202192121Srmacklem * Returns 0 if ok, 1 otherwise. 3203192121Srmacklem */ 3204192121Srmacklemint 3205192121Srmacklemnfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 3206192121Srmacklem{ 3207192121Srmacklem int i; 3208192121Srmacklem 3209192121Srmacklem /* 3210192121Srmacklem * This seems odd, but allow the case where the security flavor 3211192121Srmacklem * list is empty. This happens when NFSv4 is traversing non-exported 3212192121Srmacklem * file systems. Exported file systems should always have a non-empty 3213192121Srmacklem * security flavor list. 3214192121Srmacklem */ 3215192121Srmacklem if (exp->nes_numsecflavor == 0) 3216192121Srmacklem return (0); 3217192121Srmacklem 3218192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) { 3219192121Srmacklem /* 3220192121Srmacklem * The tests for privacy and integrity must be first, 3221192121Srmacklem * since ND_GSS is set for everything but AUTH_SYS. 3222192121Srmacklem */ 3223192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 3224192121Srmacklem (nd->nd_flag & ND_GSSPRIVACY)) 3225192121Srmacklem return (0); 3226192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 3227192121Srmacklem (nd->nd_flag & ND_GSSINTEGRITY)) 3228192121Srmacklem return (0); 3229192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 3230192121Srmacklem (nd->nd_flag & ND_GSS)) 3231192121Srmacklem return (0); 3232192121Srmacklem if (exp->nes_secflavors[i] == AUTH_SYS && 3233192121Srmacklem (nd->nd_flag & ND_GSS) == 0) 3234192121Srmacklem return (0); 3235192121Srmacklem } 3236192121Srmacklem return (1); 3237192121Srmacklem} 3238192121Srmacklem 3239214224Srmacklem/* 3240214224Srmacklem * Calculate a hash value for the fid in a file handle. 3241214224Srmacklem */ 3242214255Srmacklemuint32_t 3243214224Srmacklemnfsrv_hashfh(fhandle_t *fhp) 3244214224Srmacklem{ 3245214255Srmacklem uint32_t hashval; 3246214224Srmacklem 3247214255Srmacklem hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0); 3248214224Srmacklem return (hashval); 3249214224Srmacklem} 3250214224Srmacklem 3251217432Srmacklem/* 3252217432Srmacklem * Signal the userland master nfsd to backup the stable restart file. 3253217432Srmacklem */ 3254217432Srmacklemvoid 3255217432Srmacklemnfsrv_backupstable(void) 3256217432Srmacklem{ 3257217432Srmacklem struct proc *procp; 3258217432Srmacklem 3259217432Srmacklem if (nfsd_master_proc != NULL) { 3260217432Srmacklem procp = pfind(nfsd_master_pid); 3261217432Srmacklem /* Try to make sure it is the correct process. */ 3262217432Srmacklem if (procp == nfsd_master_proc && 3263217432Srmacklem procp->p_stats->p_start.tv_sec == 3264217432Srmacklem nfsd_master_start.tv_sec && 3265217432Srmacklem procp->p_stats->p_start.tv_usec == 3266217432Srmacklem nfsd_master_start.tv_usec && 3267217432Srmacklem strcmp(procp->p_comm, nfsd_master_comm) == 0) 3268225617Skmacy kern_psignal(procp, SIGUSR2); 3269217432Srmacklem else 3270217432Srmacklem nfsd_master_proc = NULL; 3271217432Srmacklem 3272217432Srmacklem if (procp != NULL) 3273217432Srmacklem PROC_UNLOCK(procp); 3274217432Srmacklem } 3275217432Srmacklem} 3276217432Srmacklem 3277191783Srmacklemextern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 3278191783Srmacklem 3279191783Srmacklem/* 3280191783Srmacklem * Called once to initialize data structures... 3281191783Srmacklem */ 3282191783Srmacklemstatic int 3283191783Srmacklemnfsd_modevent(module_t mod, int type, void *data) 3284191783Srmacklem{ 3285254337Srmacklem int error = 0, i; 3286191783Srmacklem static int loaded = 0; 3287191783Srmacklem 3288191783Srmacklem switch (type) { 3289191783Srmacklem case MOD_LOAD: 3290191783Srmacklem if (loaded) 3291224086Szack goto out; 3292191783Srmacklem newnfs_portinit(); 3293254337Srmacklem for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) { 3294254337Srmacklem snprintf(nfsrchash_table[i].lock_name, 3295254337Srmacklem sizeof(nfsrchash_table[i].lock_name), "nfsrc_tcp%d", 3296254337Srmacklem i); 3297254337Srmacklem mtx_init(&nfsrchash_table[i].mtx, 3298254337Srmacklem nfsrchash_table[i].lock_name, NULL, MTX_DEF); 3299254337Srmacklem } 3300254337Srmacklem mtx_init(&nfsrc_udpmtx, "nfs_udpcache_mutex", NULL, MTX_DEF); 3301191783Srmacklem mtx_init(&nfs_v4root_mutex, "nfs_v4root_mutex", NULL, MTX_DEF); 3302191783Srmacklem mtx_init(&nfsv4root_mnt.mnt_mtx, "struct mount mtx", NULL, 3303191783Srmacklem MTX_DEF); 3304191783Srmacklem lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0); 3305191783Srmacklem nfsrvd_initcache(); 3306191783Srmacklem nfsd_init(); 3307191783Srmacklem NFSD_LOCK(); 3308191783Srmacklem nfsrvd_init(0); 3309191783Srmacklem NFSD_UNLOCK(); 3310191783Srmacklem nfsd_mntinit(); 3311191783Srmacklem#ifdef VV_DISABLEDELEG 3312191783Srmacklem vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 3313191783Srmacklem vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 3314191783Srmacklem#endif 3315191783Srmacklem nfsd_call_servertimer = nfsrv_servertimer; 3316191783Srmacklem nfsd_call_nfsd = nfssvc_nfsd; 3317191783Srmacklem loaded = 1; 3318191783Srmacklem break; 3319191783Srmacklem 3320191783Srmacklem case MOD_UNLOAD: 3321191783Srmacklem if (newnfs_numnfsd != 0) { 3322191783Srmacklem error = EBUSY; 3323191783Srmacklem break; 3324191783Srmacklem } 3325191783Srmacklem 3326191783Srmacklem#ifdef VV_DISABLEDELEG 3327191783Srmacklem vn_deleg_ops.vndeleg_recall = NULL; 3328191783Srmacklem vn_deleg_ops.vndeleg_disable = NULL; 3329191783Srmacklem#endif 3330191783Srmacklem nfsd_call_servertimer = NULL; 3331191783Srmacklem nfsd_call_nfsd = NULL; 3332217335Szack 3333220530Srmacklem /* Clean out all NFSv4 state. */ 3334220530Srmacklem nfsrv_throwawayallstate(curthread); 3335220530Srmacklem 3336217335Szack /* Clean the NFS server reply cache */ 3337217335Szack nfsrvd_cleancache(); 3338217335Szack 3339220530Srmacklem /* Free up the krpc server pool. */ 3340220530Srmacklem if (nfsrvd_pool != NULL) 3341220530Srmacklem svcpool_destroy(nfsrvd_pool); 3342220530Srmacklem 3343191783Srmacklem /* and get rid of the locks */ 3344254337Srmacklem for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) 3345254337Srmacklem mtx_destroy(&nfsrchash_table[i].mtx); 3346254337Srmacklem mtx_destroy(&nfsrc_udpmtx); 3347191783Srmacklem mtx_destroy(&nfs_v4root_mutex); 3348191783Srmacklem mtx_destroy(&nfsv4root_mnt.mnt_mtx); 3349191783Srmacklem lockdestroy(&nfsv4root_mnt.mnt_explock); 3350191783Srmacklem loaded = 0; 3351191783Srmacklem break; 3352191783Srmacklem default: 3353191783Srmacklem error = EOPNOTSUPP; 3354191783Srmacklem break; 3355191783Srmacklem } 3356224086Szack 3357224086Szackout: 3358224086Szack NFSEXITCODE(error); 3359224086Szack return (error); 3360191783Srmacklem} 3361191783Srmacklemstatic moduledata_t nfsd_mod = { 3362191783Srmacklem "nfsd", 3363191783Srmacklem nfsd_modevent, 3364191783Srmacklem NULL, 3365191783Srmacklem}; 3366191783SrmacklemDECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 3367191783Srmacklem 3368191783Srmacklem/* So that loader and kldload(2) can find us, wherever we are.. */ 3369191783SrmacklemMODULE_VERSION(nfsd, 1); 3370191783SrmacklemMODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 3371216931SrmacklemMODULE_DEPEND(nfsd, nfslock, 1, 1, 1); 3372192574SrmacklemMODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 3373209191SrmacklemMODULE_DEPEND(nfsd, krpc, 1, 1, 1); 3374209191SrmacklemMODULE_DEPEND(nfsd, nfssvc, 1, 1, 1); 3375191783Srmacklem 3376