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; 61269398Srmacklemextern struct nfssessionhash nfssessionhash[NFSSESSIONHASHSIZE]; 62191783Srmacklemstruct vfsoptlist nfsv4root_opt, nfsv4root_newopt; 63191783SrmacklemNFSDLOCKMUTEX; 64254337Srmacklemstruct nfsrchash_bucket nfsrchash_table[NFSRVCACHE_HASHSIZE]; 65261055Smavstruct nfsrchash_bucket nfsrcahash_table[NFSRVCACHE_HASHSIZE]; 66254337Srmacklemstruct mtx nfsrc_udpmtx; 67191783Srmacklemstruct mtx nfs_v4root_mutex; 68191783Srmacklemstruct nfsrvfh nfs_rootfh, nfs_pubfh; 69191783Srmacklemint nfs_pubfhset = 0, nfs_rootfhset = 0; 70217432Srmacklemstruct proc *nfsd_master_proc = NULL; 71269398Srmacklemint nfsd_debuglevel = 0; 72217432Srmacklemstatic pid_t nfsd_master_pid = (pid_t)-1; 73217432Srmacklemstatic char nfsd_master_comm[MAXCOMLEN + 1]; 74217432Srmacklemstatic struct timeval nfsd_master_start; 75192503Srmacklemstatic uint32_t nfsv4_sysid = 0; 76191783Srmacklem 77192255Srmacklemstatic int nfssvc_srvcall(struct thread *, struct nfssvc_args *, 78192255Srmacklem struct ucred *); 79191783Srmacklem 80220645Srmacklemint nfsrv_enable_crossmntpt = 1; 81191783Srmacklemstatic int nfs_commit_blks; 82191783Srmacklemstatic int nfs_commit_miss; 83191783Srmacklemextern int nfsrv_issuedelegs; 84192255Srmacklemextern int nfsrv_dolocallocks; 85265714Srmacklemextern int nfsd_enable_stringtouid; 86192255Srmacklem 87221615SrmacklemSYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW, 0, "New NFS server"); 88221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, mirrormnt, CTLFLAG_RW, 89220645Srmacklem &nfsrv_enable_crossmntpt, 0, "Enable nfsd to cross mount points"); 90221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 91192255Srmacklem 0, ""); 92221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 93192255Srmacklem 0, ""); 94221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, issue_delegations, CTLFLAG_RW, 95192255Srmacklem &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); 96221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_locallocks, CTLFLAG_RW, 97192255Srmacklem &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files"); 98269398SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, debuglevel, CTLFLAG_RW, &nfsd_debuglevel, 99269398Srmacklem 0, "Debug level for new nfs server"); 100265714SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_stringtouid, CTLFLAG_RW, 101265714Srmacklem &nfsd_enable_stringtouid, 0, "Enable nfsd to accept numeric owner_names"); 102191783Srmacklem 103228185Sjhb#define MAX_REORDERED_RPC 16 104228185Sjhb#define NUM_HEURISTIC 1031 105191783Srmacklem#define NHUSE_INIT 64 106191783Srmacklem#define NHUSE_INC 16 107191783Srmacklem#define NHUSE_MAX 2048 108191783Srmacklem 109191783Srmacklemstatic struct nfsheur { 110191783Srmacklem struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 111228185Sjhb off_t nh_nextoff; /* next offset for sequential detection */ 112191783Srmacklem int nh_use; /* use count for selection */ 113191783Srmacklem int nh_seqcount; /* heuristic */ 114191783Srmacklem} nfsheur[NUM_HEURISTIC]; 115191783Srmacklem 116191783Srmacklem 117191783Srmacklem/* 118228185Sjhb * Heuristic to detect sequential operation. 119228185Sjhb */ 120228185Sjhbstatic struct nfsheur * 121228185Sjhbnfsrv_sequential_heuristic(struct uio *uio, struct vnode *vp) 122228185Sjhb{ 123228185Sjhb struct nfsheur *nh; 124228185Sjhb int hi, try; 125228185Sjhb 126228185Sjhb /* Locate best candidate. */ 127228185Sjhb try = 32; 128228185Sjhb hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 129228185Sjhb nh = &nfsheur[hi]; 130228185Sjhb while (try--) { 131228185Sjhb if (nfsheur[hi].nh_vp == vp) { 132228185Sjhb nh = &nfsheur[hi]; 133228185Sjhb break; 134228185Sjhb } 135228185Sjhb if (nfsheur[hi].nh_use > 0) 136228185Sjhb --nfsheur[hi].nh_use; 137228185Sjhb hi = (hi + 1) % NUM_HEURISTIC; 138228185Sjhb if (nfsheur[hi].nh_use < nh->nh_use) 139228185Sjhb nh = &nfsheur[hi]; 140228185Sjhb } 141228185Sjhb 142228185Sjhb /* Initialize hint if this is a new file. */ 143228185Sjhb if (nh->nh_vp != vp) { 144228185Sjhb nh->nh_vp = vp; 145228185Sjhb nh->nh_nextoff = uio->uio_offset; 146228185Sjhb nh->nh_use = NHUSE_INIT; 147228185Sjhb if (uio->uio_offset == 0) 148228185Sjhb nh->nh_seqcount = 4; 149228185Sjhb else 150228185Sjhb nh->nh_seqcount = 1; 151228185Sjhb } 152228185Sjhb 153228185Sjhb /* Calculate heuristic. */ 154228185Sjhb if ((uio->uio_offset == 0 && nh->nh_seqcount > 0) || 155228185Sjhb uio->uio_offset == nh->nh_nextoff) { 156228185Sjhb /* See comments in vfs_vnops.c:sequential_heuristic(). */ 157228185Sjhb nh->nh_seqcount += howmany(uio->uio_resid, 16384); 158228185Sjhb if (nh->nh_seqcount > IO_SEQMAX) 159228185Sjhb nh->nh_seqcount = IO_SEQMAX; 160228185Sjhb } else if (qabs(uio->uio_offset - nh->nh_nextoff) <= MAX_REORDERED_RPC * 161228185Sjhb imax(vp->v_mount->mnt_stat.f_iosize, uio->uio_resid)) { 162228185Sjhb /* Probably a reordered RPC, leave seqcount alone. */ 163228185Sjhb } else if (nh->nh_seqcount > 1) { 164228185Sjhb nh->nh_seqcount /= 2; 165228185Sjhb } else { 166228185Sjhb nh->nh_seqcount = 0; 167228185Sjhb } 168228185Sjhb nh->nh_use += NHUSE_INC; 169228185Sjhb if (nh->nh_use > NHUSE_MAX) 170228185Sjhb nh->nh_use = NHUSE_MAX; 171228185Sjhb return (nh); 172228185Sjhb} 173228185Sjhb 174228185Sjhb/* 175191783Srmacklem * Get attributes into nfsvattr structure. 176191783Srmacklem */ 177191783Srmacklemint 178191783Srmacklemnfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 179216693Srmacklem struct thread *p, int vpislocked) 180191783Srmacklem{ 181191783Srmacklem int error, lockedit = 0; 182191783Srmacklem 183216693Srmacklem if (vpislocked == 0) { 184216693Srmacklem /* 185216693Srmacklem * When vpislocked == 0, the vnode is either exclusively 186216693Srmacklem * locked by this thread or not locked by this thread. 187216693Srmacklem * As such, shared lock it, if not exclusively locked. 188216693Srmacklem */ 189224083Szack if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { 190216693Srmacklem lockedit = 1; 191224081Szack NFSVOPLOCK(vp, LK_SHARED | LK_RETRY); 192216693Srmacklem } 193191783Srmacklem } 194191783Srmacklem error = VOP_GETATTR(vp, &nvap->na_vattr, cred); 195216693Srmacklem if (lockedit != 0) 196224082Szack NFSVOPUNLOCK(vp, 0); 197224086Szack 198224086Szack NFSEXITCODE(error); 199191783Srmacklem return (error); 200191783Srmacklem} 201191783Srmacklem 202191783Srmacklem/* 203191783Srmacklem * Get a file handle for a vnode. 204191783Srmacklem */ 205191783Srmacklemint 206191783Srmacklemnfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 207191783Srmacklem{ 208191783Srmacklem int error; 209191783Srmacklem 210191783Srmacklem NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 211191783Srmacklem fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 212191783Srmacklem error = VOP_VPTOFH(vp, &fhp->fh_fid); 213224086Szack 214224086Szack NFSEXITCODE(error); 215191783Srmacklem return (error); 216191783Srmacklem} 217191783Srmacklem 218191783Srmacklem/* 219191783Srmacklem * Perform access checking for vnodes obtained from file handles that would 220191783Srmacklem * refer to files already opened by a Unix client. You cannot just use 221200999Srmacklem * vn_writechk() and VOP_ACCESSX() for two reasons. 222200999Srmacklem * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write 223200999Srmacklem * case. 224191783Srmacklem * 2 - The owner is to be given access irrespective of mode bits for some 225191783Srmacklem * operations, so that processes that chmod after opening a file don't 226191783Srmacklem * break. 227191783Srmacklem */ 228191783Srmacklemint 229200999Srmacklemnfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred, 230200999Srmacklem struct nfsexstuff *exp, struct thread *p, int override, int vpislocked, 231200999Srmacklem u_int32_t *supportedtypep) 232191783Srmacklem{ 233191783Srmacklem struct vattr vattr; 234191783Srmacklem int error = 0, getret = 0; 235191783Srmacklem 236216893Srmacklem if (vpislocked == 0) { 237224086Szack if (NFSVOPLOCK(vp, LK_SHARED) != 0) { 238224086Szack error = EPERM; 239224086Szack goto out; 240224086Szack } 241216893Srmacklem } 242191783Srmacklem if (accmode & VWRITE) { 243191783Srmacklem /* Just vn_writechk() changed to check rdonly */ 244191783Srmacklem /* 245191783Srmacklem * Disallow write attempts on read-only file systems; 246191783Srmacklem * unless the file is a socket or a block or character 247191783Srmacklem * device resident on the file system. 248191783Srmacklem */ 249191783Srmacklem if (NFSVNO_EXRDONLY(exp) || 250200999Srmacklem (vp->v_mount->mnt_flag & MNT_RDONLY)) { 251191783Srmacklem switch (vp->v_type) { 252191783Srmacklem case VREG: 253191783Srmacklem case VDIR: 254191783Srmacklem case VLNK: 255216893Srmacklem error = EROFS; 256191783Srmacklem default: 257191783Srmacklem break; 258191783Srmacklem } 259191783Srmacklem } 260191783Srmacklem /* 261191783Srmacklem * If there's shared text associated with 262191783Srmacklem * the inode, try to free it up once. If 263191783Srmacklem * we fail, we can't allow writing. 264191783Srmacklem */ 265241025Skib if (VOP_IS_TEXT(vp) && error == 0) 266216893Srmacklem error = ETXTBSY; 267191783Srmacklem } 268216893Srmacklem if (error != 0) { 269216893Srmacklem if (vpislocked == 0) 270224082Szack NFSVOPUNLOCK(vp, 0); 271224086Szack goto out; 272216893Srmacklem } 273191783Srmacklem 274191783Srmacklem /* 275191783Srmacklem * Should the override still be applied when ACLs are enabled? 276191783Srmacklem */ 277200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 278200999Srmacklem if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) { 279200999Srmacklem /* 280200999Srmacklem * Try again with VEXPLICIT_DENY, to see if the test for 281200999Srmacklem * deletion is supported. 282200999Srmacklem */ 283200999Srmacklem error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p); 284200999Srmacklem if (error == 0) { 285200999Srmacklem if (vp->v_type == VDIR) { 286200999Srmacklem accmode &= ~(VDELETE | VDELETE_CHILD); 287200999Srmacklem accmode |= VWRITE; 288200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 289200999Srmacklem } else if (supportedtypep != NULL) { 290200999Srmacklem *supportedtypep &= ~NFSACCESS_DELETE; 291200999Srmacklem } 292200999Srmacklem } 293200999Srmacklem } 294191783Srmacklem 295191783Srmacklem /* 296191783Srmacklem * Allow certain operations for the owner (reads and writes 297191783Srmacklem * on files that are already open). 298191783Srmacklem */ 299191783Srmacklem if (override != NFSACCCHK_NOOVERRIDE && 300191783Srmacklem (error == EPERM || error == EACCES)) { 301191783Srmacklem if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 302191783Srmacklem error = 0; 303191783Srmacklem else if (override & NFSACCCHK_ALLOWOWNER) { 304191783Srmacklem getret = VOP_GETATTR(vp, &vattr, cred); 305191783Srmacklem if (getret == 0 && cred->cr_uid == vattr.va_uid) 306191783Srmacklem error = 0; 307191783Srmacklem } 308191783Srmacklem } 309191783Srmacklem if (vpislocked == 0) 310224082Szack NFSVOPUNLOCK(vp, 0); 311224086Szack 312224086Szackout: 313224086Szack NFSEXITCODE(error); 314191783Srmacklem return (error); 315191783Srmacklem} 316191783Srmacklem 317191783Srmacklem/* 318191783Srmacklem * Set attribute(s) vnop. 319191783Srmacklem */ 320191783Srmacklemint 321191783Srmacklemnfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 322191783Srmacklem struct thread *p, struct nfsexstuff *exp) 323191783Srmacklem{ 324191783Srmacklem int error; 325191783Srmacklem 326191783Srmacklem error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 327224086Szack NFSEXITCODE(error); 328191783Srmacklem return (error); 329191783Srmacklem} 330191783Srmacklem 331191783Srmacklem/* 332231805Srmacklem * Set up nameidata for a lookup() call and do it. 333191783Srmacklem */ 334191783Srmacklemint 335191783Srmacklemnfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 336191783Srmacklem struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p, 337191783Srmacklem struct vnode **retdirp) 338191783Srmacklem{ 339191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 340191783Srmacklem int i; 341191783Srmacklem struct iovec aiov; 342191783Srmacklem struct uio auio; 343191783Srmacklem int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 344191783Srmacklem int error = 0, crossmnt; 345191783Srmacklem char *cp; 346191783Srmacklem 347191783Srmacklem *retdirp = NULL; 348191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 349225356Srmacklem ndp->ni_strictrelative = 0; 350191783Srmacklem /* 351191783Srmacklem * Extract and set starting directory. 352191783Srmacklem */ 353191783Srmacklem if (dp->v_type != VDIR) { 354191783Srmacklem if (islocked) 355191783Srmacklem vput(dp); 356191783Srmacklem else 357191783Srmacklem vrele(dp); 358191783Srmacklem nfsvno_relpathbuf(ndp); 359224086Szack error = ENOTDIR; 360224086Szack goto out1; 361191783Srmacklem } 362191783Srmacklem if (islocked) 363224080Szack NFSVOPUNLOCK(dp, 0); 364191783Srmacklem VREF(dp); 365191783Srmacklem *retdirp = dp; 366191783Srmacklem if (NFSVNO_EXRDONLY(exp)) 367191783Srmacklem cnp->cn_flags |= RDONLY; 368191783Srmacklem ndp->ni_segflg = UIO_SYSSPACE; 369191783Srmacklem crossmnt = 1; 370191783Srmacklem 371191783Srmacklem if (nd->nd_flag & ND_PUBLOOKUP) { 372191783Srmacklem ndp->ni_loopcnt = 0; 373191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 374191783Srmacklem vrele(dp); 375191783Srmacklem /* 376191783Srmacklem * Check for degenerate pathnames here, since lookup() 377191783Srmacklem * panics on them. 378191783Srmacklem */ 379191783Srmacklem for (i = 1; i < ndp->ni_pathlen; i++) 380191783Srmacklem if (cnp->cn_pnbuf[i] != '/') 381191783Srmacklem break; 382191783Srmacklem if (i == ndp->ni_pathlen) { 383191783Srmacklem error = NFSERR_ACCES; 384191783Srmacklem goto out; 385191783Srmacklem } 386191783Srmacklem dp = rootvnode; 387191783Srmacklem VREF(dp); 388191783Srmacklem } 389220645Srmacklem } else if ((nfsrv_enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 390191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) { 391191783Srmacklem /* 392191783Srmacklem * Only cross mount points for NFSv4 when doing a 393191783Srmacklem * mount while traversing the file system above 394220645Srmacklem * the mount point, unless nfsrv_enable_crossmntpt is set. 395191783Srmacklem */ 396191783Srmacklem cnp->cn_flags |= NOCROSSMOUNT; 397191783Srmacklem crossmnt = 0; 398191783Srmacklem } 399191783Srmacklem 400191783Srmacklem /* 401191783Srmacklem * Initialize for scan, set ni_startdir and bump ref on dp again 402250657Sdes * because lookup() will dereference ni_startdir. 403191783Srmacklem */ 404191783Srmacklem 405191783Srmacklem cnp->cn_thread = p; 406191783Srmacklem ndp->ni_startdir = dp; 407191783Srmacklem ndp->ni_rootdir = rootvnode; 408232467Srmacklem ndp->ni_topdir = NULL; 409191783Srmacklem 410191783Srmacklem if (!lockleaf) 411191783Srmacklem cnp->cn_flags |= LOCKLEAF; 412191783Srmacklem for (;;) { 413191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 414191783Srmacklem /* 415191783Srmacklem * Call lookup() to do the real work. If an error occurs, 416191783Srmacklem * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 417191783Srmacklem * we do not have to dereference anything before returning. 418191783Srmacklem * In either case ni_startdir will be dereferenced and NULLed 419191783Srmacklem * out. 420191783Srmacklem */ 421191783Srmacklem error = lookup(ndp); 422191783Srmacklem if (error) 423191783Srmacklem break; 424191783Srmacklem 425191783Srmacklem /* 426191783Srmacklem * Check for encountering a symbolic link. Trivial 427191783Srmacklem * termination occurs if no symlink encountered. 428191783Srmacklem */ 429191783Srmacklem if ((cnp->cn_flags & ISSYMLINK) == 0) { 430191783Srmacklem if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0) 431191783Srmacklem nfsvno_relpathbuf(ndp); 432191783Srmacklem if (ndp->ni_vp && !lockleaf) 433224080Szack NFSVOPUNLOCK(ndp->ni_vp, 0); 434191783Srmacklem break; 435191783Srmacklem } 436191783Srmacklem 437191783Srmacklem /* 438191783Srmacklem * Validate symlink 439191783Srmacklem */ 440191783Srmacklem if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 441224080Szack NFSVOPUNLOCK(ndp->ni_dvp, 0); 442191783Srmacklem if (!(nd->nd_flag & ND_PUBLOOKUP)) { 443191783Srmacklem error = EINVAL; 444191783Srmacklem goto badlink2; 445191783Srmacklem } 446191783Srmacklem 447191783Srmacklem if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 448191783Srmacklem error = ELOOP; 449191783Srmacklem goto badlink2; 450191783Srmacklem } 451191783Srmacklem if (ndp->ni_pathlen > 1) 452191783Srmacklem cp = uma_zalloc(namei_zone, M_WAITOK); 453191783Srmacklem else 454191783Srmacklem cp = cnp->cn_pnbuf; 455191783Srmacklem aiov.iov_base = cp; 456191783Srmacklem aiov.iov_len = MAXPATHLEN; 457191783Srmacklem auio.uio_iov = &aiov; 458191783Srmacklem auio.uio_iovcnt = 1; 459191783Srmacklem auio.uio_offset = 0; 460191783Srmacklem auio.uio_rw = UIO_READ; 461191783Srmacklem auio.uio_segflg = UIO_SYSSPACE; 462191783Srmacklem auio.uio_td = NULL; 463191783Srmacklem auio.uio_resid = MAXPATHLEN; 464191783Srmacklem error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 465191783Srmacklem if (error) { 466191783Srmacklem badlink1: 467191783Srmacklem if (ndp->ni_pathlen > 1) 468191783Srmacklem uma_zfree(namei_zone, cp); 469191783Srmacklem badlink2: 470191783Srmacklem vrele(ndp->ni_dvp); 471191783Srmacklem vput(ndp->ni_vp); 472191783Srmacklem break; 473191783Srmacklem } 474191783Srmacklem linklen = MAXPATHLEN - auio.uio_resid; 475191783Srmacklem if (linklen == 0) { 476191783Srmacklem error = ENOENT; 477191783Srmacklem goto badlink1; 478191783Srmacklem } 479191783Srmacklem if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 480191783Srmacklem error = ENAMETOOLONG; 481191783Srmacklem goto badlink1; 482191783Srmacklem } 483191783Srmacklem 484191783Srmacklem /* 485191783Srmacklem * Adjust or replace path 486191783Srmacklem */ 487191783Srmacklem if (ndp->ni_pathlen > 1) { 488191783Srmacklem NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 489191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 490191783Srmacklem cnp->cn_pnbuf = cp; 491191783Srmacklem } else 492191783Srmacklem cnp->cn_pnbuf[linklen] = '\0'; 493191783Srmacklem ndp->ni_pathlen += linklen; 494191783Srmacklem 495191783Srmacklem /* 496191783Srmacklem * Cleanup refs for next loop and check if root directory 497191783Srmacklem * should replace current directory. Normally ni_dvp 498191783Srmacklem * becomes the new base directory and is cleaned up when 499191783Srmacklem * we loop. Explicitly null pointers after invalidation 500191783Srmacklem * to clarify operation. 501191783Srmacklem */ 502191783Srmacklem vput(ndp->ni_vp); 503191783Srmacklem ndp->ni_vp = NULL; 504191783Srmacklem 505191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 506191783Srmacklem vrele(ndp->ni_dvp); 507191783Srmacklem ndp->ni_dvp = ndp->ni_rootdir; 508191783Srmacklem VREF(ndp->ni_dvp); 509191783Srmacklem } 510191783Srmacklem ndp->ni_startdir = ndp->ni_dvp; 511191783Srmacklem ndp->ni_dvp = NULL; 512191783Srmacklem } 513191783Srmacklem if (!lockleaf) 514191783Srmacklem cnp->cn_flags &= ~LOCKLEAF; 515191783Srmacklem 516191783Srmacklemout: 517191783Srmacklem if (error) { 518235136Sjwd nfsvno_relpathbuf(ndp); 519191783Srmacklem ndp->ni_vp = NULL; 520191783Srmacklem ndp->ni_dvp = NULL; 521191783Srmacklem ndp->ni_startdir = NULL; 522191783Srmacklem } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 523191783Srmacklem ndp->ni_dvp = NULL; 524191783Srmacklem } 525224086Szack 526224086Szackout1: 527224086Szack NFSEXITCODE2(error, nd); 528191783Srmacklem return (error); 529191783Srmacklem} 530191783Srmacklem 531191783Srmacklem/* 532191783Srmacklem * Set up a pathname buffer and return a pointer to it and, optionally 533191783Srmacklem * set a hash pointer. 534191783Srmacklem */ 535191783Srmacklemvoid 536191783Srmacklemnfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 537191783Srmacklem{ 538191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 539191783Srmacklem 540191783Srmacklem cnp->cn_flags |= (NOMACCHECK | HASBUF); 541191783Srmacklem cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 542191783Srmacklem if (hashpp != NULL) 543191783Srmacklem *hashpp = NULL; 544191783Srmacklem *bufpp = cnp->cn_pnbuf; 545191783Srmacklem} 546191783Srmacklem 547191783Srmacklem/* 548191783Srmacklem * Release the above path buffer, if not released by nfsvno_namei(). 549191783Srmacklem */ 550191783Srmacklemvoid 551191783Srmacklemnfsvno_relpathbuf(struct nameidata *ndp) 552191783Srmacklem{ 553191783Srmacklem 554191783Srmacklem if ((ndp->ni_cnd.cn_flags & HASBUF) == 0) 555191783Srmacklem panic("nfsrelpath"); 556191783Srmacklem uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 557191783Srmacklem ndp->ni_cnd.cn_flags &= ~HASBUF; 558191783Srmacklem} 559191783Srmacklem 560191783Srmacklem/* 561191783Srmacklem * Readlink vnode op into an mbuf list. 562191783Srmacklem */ 563191783Srmacklemint 564191783Srmacklemnfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p, 565191783Srmacklem struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 566191783Srmacklem{ 567191783Srmacklem struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; 568191783Srmacklem struct iovec *ivp = iv; 569191783Srmacklem struct uio io, *uiop = &io; 570191783Srmacklem struct mbuf *mp, *mp2 = NULL, *mp3 = NULL; 571224086Szack int i, len, tlen, error = 0; 572191783Srmacklem 573191783Srmacklem len = 0; 574191783Srmacklem i = 0; 575191783Srmacklem while (len < NFS_MAXPATHLEN) { 576191783Srmacklem NFSMGET(mp); 577243882Sglebius MCLGET(mp, M_WAITOK); 578191783Srmacklem mp->m_len = NFSMSIZ(mp); 579191783Srmacklem if (len == 0) { 580191783Srmacklem mp3 = mp2 = mp; 581191783Srmacklem } else { 582191783Srmacklem mp2->m_next = mp; 583191783Srmacklem mp2 = mp; 584191783Srmacklem } 585191783Srmacklem if ((len + mp->m_len) > NFS_MAXPATHLEN) { 586191783Srmacklem mp->m_len = NFS_MAXPATHLEN - len; 587191783Srmacklem len = NFS_MAXPATHLEN; 588191783Srmacklem } else { 589191783Srmacklem len += mp->m_len; 590191783Srmacklem } 591191783Srmacklem ivp->iov_base = mtod(mp, caddr_t); 592191783Srmacklem ivp->iov_len = mp->m_len; 593191783Srmacklem i++; 594191783Srmacklem ivp++; 595191783Srmacklem } 596191783Srmacklem uiop->uio_iov = iv; 597191783Srmacklem uiop->uio_iovcnt = i; 598191783Srmacklem uiop->uio_offset = 0; 599191783Srmacklem uiop->uio_resid = len; 600191783Srmacklem uiop->uio_rw = UIO_READ; 601191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 602191783Srmacklem uiop->uio_td = NULL; 603191783Srmacklem error = VOP_READLINK(vp, uiop, cred); 604191783Srmacklem if (error) { 605191783Srmacklem m_freem(mp3); 606191783Srmacklem *lenp = 0; 607224086Szack goto out; 608191783Srmacklem } 609191783Srmacklem if (uiop->uio_resid > 0) { 610191783Srmacklem len -= uiop->uio_resid; 611191783Srmacklem tlen = NFSM_RNDUP(len); 612191783Srmacklem nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len); 613191783Srmacklem } 614191783Srmacklem *lenp = len; 615191783Srmacklem *mpp = mp3; 616191783Srmacklem *mpendp = mp; 617224086Szack 618224086Szackout: 619224086Szack NFSEXITCODE(error); 620224086Szack return (error); 621191783Srmacklem} 622191783Srmacklem 623191783Srmacklem/* 624191783Srmacklem * Read vnode op call into mbuf list. 625191783Srmacklem */ 626191783Srmacklemint 627191783Srmacklemnfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 628191783Srmacklem struct thread *p, struct mbuf **mpp, struct mbuf **mpendp) 629191783Srmacklem{ 630191783Srmacklem struct mbuf *m; 631191783Srmacklem int i; 632191783Srmacklem struct iovec *iv; 633191783Srmacklem struct iovec *iv2; 634228185Sjhb int error = 0, len, left, siz, tlen, ioflag = 0; 635191783Srmacklem struct mbuf *m2 = NULL, *m3; 636191783Srmacklem struct uio io, *uiop = &io; 637191783Srmacklem struct nfsheur *nh; 638191783Srmacklem 639191783Srmacklem len = left = NFSM_RNDUP(cnt); 640191783Srmacklem m3 = NULL; 641191783Srmacklem /* 642191783Srmacklem * Generate the mbuf list with the uio_iov ref. to it. 643191783Srmacklem */ 644191783Srmacklem i = 0; 645191783Srmacklem while (left > 0) { 646191783Srmacklem NFSMGET(m); 647243882Sglebius MCLGET(m, M_WAITOK); 648191783Srmacklem m->m_len = 0; 649191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 650191783Srmacklem left -= siz; 651191783Srmacklem i++; 652191783Srmacklem if (m3) 653191783Srmacklem m2->m_next = m; 654191783Srmacklem else 655191783Srmacklem m3 = m; 656191783Srmacklem m2 = m; 657191783Srmacklem } 658191783Srmacklem MALLOC(iv, struct iovec *, i * sizeof (struct iovec), 659191783Srmacklem M_TEMP, M_WAITOK); 660191783Srmacklem uiop->uio_iov = iv2 = iv; 661191783Srmacklem m = m3; 662191783Srmacklem left = len; 663191783Srmacklem i = 0; 664191783Srmacklem while (left > 0) { 665191783Srmacklem if (m == NULL) 666191783Srmacklem panic("nfsvno_read iov"); 667191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 668191783Srmacklem if (siz > 0) { 669191783Srmacklem iv->iov_base = mtod(m, caddr_t) + m->m_len; 670191783Srmacklem iv->iov_len = siz; 671191783Srmacklem m->m_len += siz; 672191783Srmacklem left -= siz; 673191783Srmacklem iv++; 674191783Srmacklem i++; 675191783Srmacklem } 676191783Srmacklem m = m->m_next; 677191783Srmacklem } 678191783Srmacklem uiop->uio_iovcnt = i; 679191783Srmacklem uiop->uio_offset = off; 680191783Srmacklem uiop->uio_resid = len; 681191783Srmacklem uiop->uio_rw = UIO_READ; 682191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 683265667Srmacklem uiop->uio_td = NULL; 684228185Sjhb nh = nfsrv_sequential_heuristic(uiop, vp); 685228185Sjhb ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 686191783Srmacklem error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 687191783Srmacklem FREE((caddr_t)iv2, M_TEMP); 688191783Srmacklem if (error) { 689191783Srmacklem m_freem(m3); 690191783Srmacklem *mpp = NULL; 691224086Szack goto out; 692191783Srmacklem } 693228185Sjhb nh->nh_nextoff = uiop->uio_offset; 694191783Srmacklem tlen = len - uiop->uio_resid; 695191783Srmacklem cnt = cnt < tlen ? cnt : tlen; 696191783Srmacklem tlen = NFSM_RNDUP(cnt); 697191783Srmacklem if (tlen == 0) { 698191783Srmacklem m_freem(m3); 699191783Srmacklem m3 = NULL; 700191783Srmacklem } else if (len != tlen || tlen != cnt) 701191783Srmacklem nfsrv_adj(m3, len - tlen, tlen - cnt); 702191783Srmacklem *mpp = m3; 703191783Srmacklem *mpendp = m2; 704224086Szack 705224086Szackout: 706224086Szack NFSEXITCODE(error); 707224086Szack return (error); 708191783Srmacklem} 709191783Srmacklem 710191783Srmacklem/* 711191783Srmacklem * Write vnode op from an mbuf list. 712191783Srmacklem */ 713191783Srmacklemint 714191783Srmacklemnfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable, 715191783Srmacklem struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 716191783Srmacklem{ 717191783Srmacklem struct iovec *ivp; 718191783Srmacklem int i, len; 719191783Srmacklem struct iovec *iv; 720191783Srmacklem int ioflags, error; 721191783Srmacklem struct uio io, *uiop = &io; 722228185Sjhb struct nfsheur *nh; 723191783Srmacklem 724191783Srmacklem MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP, 725191783Srmacklem M_WAITOK); 726191783Srmacklem uiop->uio_iov = iv = ivp; 727191783Srmacklem uiop->uio_iovcnt = cnt; 728191783Srmacklem i = mtod(mp, caddr_t) + mp->m_len - cp; 729191783Srmacklem len = retlen; 730191783Srmacklem while (len > 0) { 731191783Srmacklem if (mp == NULL) 732191783Srmacklem panic("nfsvno_write"); 733191783Srmacklem if (i > 0) { 734191783Srmacklem i = min(i, len); 735191783Srmacklem ivp->iov_base = cp; 736191783Srmacklem ivp->iov_len = i; 737191783Srmacklem ivp++; 738191783Srmacklem len -= i; 739191783Srmacklem } 740191783Srmacklem mp = mp->m_next; 741191783Srmacklem if (mp) { 742191783Srmacklem i = mp->m_len; 743191783Srmacklem cp = mtod(mp, caddr_t); 744191783Srmacklem } 745191783Srmacklem } 746191783Srmacklem 747191783Srmacklem if (stable == NFSWRITE_UNSTABLE) 748191783Srmacklem ioflags = IO_NODELOCKED; 749191783Srmacklem else 750191783Srmacklem ioflags = (IO_SYNC | IO_NODELOCKED); 751191783Srmacklem uiop->uio_resid = retlen; 752191783Srmacklem uiop->uio_rw = UIO_WRITE; 753191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 754191783Srmacklem NFSUIOPROC(uiop, p); 755191783Srmacklem uiop->uio_offset = off; 756228185Sjhb nh = nfsrv_sequential_heuristic(uiop, vp); 757228185Sjhb ioflags |= nh->nh_seqcount << IO_SEQSHIFT; 758191783Srmacklem error = VOP_WRITE(vp, uiop, ioflags, cred); 759228185Sjhb if (error == 0) 760228185Sjhb nh->nh_nextoff = uiop->uio_offset; 761191783Srmacklem FREE((caddr_t)iv, M_TEMP); 762224086Szack 763224086Szack NFSEXITCODE(error); 764191783Srmacklem return (error); 765191783Srmacklem} 766191783Srmacklem 767191783Srmacklem/* 768191783Srmacklem * Common code for creating a regular file (plus special files for V2). 769191783Srmacklem */ 770191783Srmacklemint 771191783Srmacklemnfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 772191783Srmacklem struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 773199616Srmacklem int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp) 774191783Srmacklem{ 775191783Srmacklem u_quad_t tempsize; 776191783Srmacklem int error; 777191783Srmacklem 778191783Srmacklem error = nd->nd_repstat; 779191783Srmacklem if (!error && ndp->ni_vp == NULL) { 780191783Srmacklem if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 781191783Srmacklem vrele(ndp->ni_startdir); 782191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, 783191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 784191783Srmacklem vput(ndp->ni_dvp); 785191783Srmacklem nfsvno_relpathbuf(ndp); 786191783Srmacklem if (!error) { 787191783Srmacklem if (*exclusive_flagp) { 788191783Srmacklem *exclusive_flagp = 0; 789191783Srmacklem NFSVNO_ATTRINIT(nvap); 790199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 791199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 792191783Srmacklem error = VOP_SETATTR(ndp->ni_vp, 793191783Srmacklem &nvap->na_vattr, nd->nd_cred); 794191783Srmacklem } 795191783Srmacklem } 796191783Srmacklem /* 797191783Srmacklem * NFS V2 Only. nfsrvd_mknod() does this for V3. 798191783Srmacklem * (This implies, just get out on an error.) 799191783Srmacklem */ 800191783Srmacklem } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 801191783Srmacklem nvap->na_type == VFIFO) { 802191783Srmacklem if (nvap->na_type == VCHR && rdev == 0xffffffff) 803191783Srmacklem nvap->na_type = VFIFO; 804191783Srmacklem if (nvap->na_type != VFIFO && 805191783Srmacklem (error = priv_check_cred(nd->nd_cred, 806191783Srmacklem PRIV_VFS_MKNOD_DEV, 0))) { 807191783Srmacklem vrele(ndp->ni_startdir); 808191783Srmacklem nfsvno_relpathbuf(ndp); 809191783Srmacklem vput(ndp->ni_dvp); 810224086Szack goto out; 811191783Srmacklem } 812191783Srmacklem nvap->na_rdev = rdev; 813191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 814191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 815191783Srmacklem vput(ndp->ni_dvp); 816191783Srmacklem nfsvno_relpathbuf(ndp); 817220546Srmacklem vrele(ndp->ni_startdir); 818220546Srmacklem if (error) 819224086Szack goto out; 820191783Srmacklem } else { 821191783Srmacklem vrele(ndp->ni_startdir); 822191783Srmacklem nfsvno_relpathbuf(ndp); 823191783Srmacklem vput(ndp->ni_dvp); 824224086Szack error = ENXIO; 825224086Szack goto out; 826191783Srmacklem } 827191783Srmacklem *vpp = ndp->ni_vp; 828191783Srmacklem } else { 829191783Srmacklem /* 830191783Srmacklem * Handle cases where error is already set and/or 831191783Srmacklem * the file exists. 832191783Srmacklem * 1 - clean up the lookup 833191783Srmacklem * 2 - iff !error and na_size set, truncate it 834191783Srmacklem */ 835191783Srmacklem vrele(ndp->ni_startdir); 836191783Srmacklem nfsvno_relpathbuf(ndp); 837191783Srmacklem *vpp = ndp->ni_vp; 838191783Srmacklem if (ndp->ni_dvp == *vpp) 839191783Srmacklem vrele(ndp->ni_dvp); 840191783Srmacklem else 841191783Srmacklem vput(ndp->ni_dvp); 842191783Srmacklem if (!error && nvap->na_size != VNOVAL) { 843200999Srmacklem error = nfsvno_accchk(*vpp, VWRITE, 844191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 845200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 846191783Srmacklem if (!error) { 847191783Srmacklem tempsize = nvap->na_size; 848191783Srmacklem NFSVNO_ATTRINIT(nvap); 849191783Srmacklem nvap->na_size = tempsize; 850191783Srmacklem error = VOP_SETATTR(*vpp, 851191783Srmacklem &nvap->na_vattr, nd->nd_cred); 852191783Srmacklem } 853191783Srmacklem } 854191783Srmacklem if (error) 855191783Srmacklem vput(*vpp); 856191783Srmacklem } 857224086Szack 858224086Szackout: 859224086Szack NFSEXITCODE(error); 860191783Srmacklem return (error); 861191783Srmacklem} 862191783Srmacklem 863191783Srmacklem/* 864191783Srmacklem * Do a mknod vnode op. 865191783Srmacklem */ 866191783Srmacklemint 867191783Srmacklemnfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, 868191783Srmacklem struct thread *p) 869191783Srmacklem{ 870191783Srmacklem int error = 0; 871191783Srmacklem enum vtype vtyp; 872191783Srmacklem 873191783Srmacklem vtyp = nvap->na_type; 874191783Srmacklem /* 875191783Srmacklem * Iff doesn't exist, create it. 876191783Srmacklem */ 877191783Srmacklem if (ndp->ni_vp) { 878191783Srmacklem vrele(ndp->ni_startdir); 879191783Srmacklem nfsvno_relpathbuf(ndp); 880191783Srmacklem vput(ndp->ni_dvp); 881191783Srmacklem vrele(ndp->ni_vp); 882224086Szack error = EEXIST; 883224086Szack goto out; 884191783Srmacklem } 885191783Srmacklem if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { 886191783Srmacklem vrele(ndp->ni_startdir); 887191783Srmacklem nfsvno_relpathbuf(ndp); 888191783Srmacklem vput(ndp->ni_dvp); 889224086Szack error = NFSERR_BADTYPE; 890224086Szack goto out; 891191783Srmacklem } 892191783Srmacklem if (vtyp == VSOCK) { 893191783Srmacklem vrele(ndp->ni_startdir); 894191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, 895191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 896191783Srmacklem vput(ndp->ni_dvp); 897191783Srmacklem nfsvno_relpathbuf(ndp); 898191783Srmacklem } else { 899191783Srmacklem if (nvap->na_type != VFIFO && 900191783Srmacklem (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) { 901191783Srmacklem vrele(ndp->ni_startdir); 902191783Srmacklem nfsvno_relpathbuf(ndp); 903191783Srmacklem vput(ndp->ni_dvp); 904224086Szack goto out; 905191783Srmacklem } 906191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 907191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 908191783Srmacklem vput(ndp->ni_dvp); 909191783Srmacklem nfsvno_relpathbuf(ndp); 910216898Srmacklem vrele(ndp->ni_startdir); 911191783Srmacklem /* 912191783Srmacklem * Since VOP_MKNOD returns the ni_vp, I can't 913191783Srmacklem * see any reason to do the lookup. 914191783Srmacklem */ 915191783Srmacklem } 916224086Szack 917224086Szackout: 918224086Szack NFSEXITCODE(error); 919191783Srmacklem return (error); 920191783Srmacklem} 921191783Srmacklem 922191783Srmacklem/* 923191783Srmacklem * Mkdir vnode op. 924191783Srmacklem */ 925191783Srmacklemint 926191783Srmacklemnfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, 927191783Srmacklem struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 928191783Srmacklem{ 929191783Srmacklem int error = 0; 930191783Srmacklem 931191783Srmacklem if (ndp->ni_vp != NULL) { 932191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 933191783Srmacklem vrele(ndp->ni_dvp); 934191783Srmacklem else 935191783Srmacklem vput(ndp->ni_dvp); 936191783Srmacklem vrele(ndp->ni_vp); 937206063Srmacklem nfsvno_relpathbuf(ndp); 938224086Szack error = EEXIST; 939224086Szack goto out; 940191783Srmacklem } 941191783Srmacklem error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 942191783Srmacklem &nvap->na_vattr); 943191783Srmacklem vput(ndp->ni_dvp); 944191783Srmacklem nfsvno_relpathbuf(ndp); 945224086Szack 946224086Szackout: 947224086Szack NFSEXITCODE(error); 948191783Srmacklem return (error); 949191783Srmacklem} 950191783Srmacklem 951191783Srmacklem/* 952191783Srmacklem * symlink vnode op. 953191783Srmacklem */ 954191783Srmacklemint 955191783Srmacklemnfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, 956191783Srmacklem int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, 957191783Srmacklem struct nfsexstuff *exp) 958191783Srmacklem{ 959191783Srmacklem int error = 0; 960191783Srmacklem 961191783Srmacklem if (ndp->ni_vp) { 962191783Srmacklem vrele(ndp->ni_startdir); 963191783Srmacklem nfsvno_relpathbuf(ndp); 964191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 965191783Srmacklem vrele(ndp->ni_dvp); 966191783Srmacklem else 967191783Srmacklem vput(ndp->ni_dvp); 968191783Srmacklem vrele(ndp->ni_vp); 969224086Szack error = EEXIST; 970224086Szack goto out; 971191783Srmacklem } 972191783Srmacklem 973191783Srmacklem error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 974191783Srmacklem &nvap->na_vattr, pathcp); 975191783Srmacklem vput(ndp->ni_dvp); 976191783Srmacklem vrele(ndp->ni_startdir); 977191783Srmacklem nfsvno_relpathbuf(ndp); 978191783Srmacklem /* 979191783Srmacklem * Although FreeBSD still had the lookup code in 980191783Srmacklem * it for 7/current, there doesn't seem to be any 981191783Srmacklem * point, since VOP_SYMLINK() returns the ni_vp. 982191783Srmacklem * Just vput it for v2. 983191783Srmacklem */ 984191783Srmacklem if (!not_v2 && !error) 985191783Srmacklem vput(ndp->ni_vp); 986224086Szack 987224086Szackout: 988224086Szack NFSEXITCODE(error); 989191783Srmacklem return (error); 990191783Srmacklem} 991191783Srmacklem 992191783Srmacklem/* 993191783Srmacklem * Parse symbolic link arguments. 994191783Srmacklem * This function has an ugly side effect. It will MALLOC() an area for 995191783Srmacklem * the symlink and set iov_base to point to it, only if it succeeds. 996191783Srmacklem * So, if it returns with uiop->uio_iov->iov_base != NULL, that must 997191783Srmacklem * be FREE'd later. 998191783Srmacklem */ 999191783Srmacklemint 1000191783Srmacklemnfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, 1001191783Srmacklem struct thread *p, char **pathcpp, int *lenp) 1002191783Srmacklem{ 1003191783Srmacklem u_int32_t *tl; 1004191783Srmacklem char *pathcp = NULL; 1005191783Srmacklem int error = 0, len; 1006191783Srmacklem struct nfsv2_sattr *sp; 1007191783Srmacklem 1008191783Srmacklem *pathcpp = NULL; 1009191783Srmacklem *lenp = 0; 1010191783Srmacklem if ((nd->nd_flag & ND_NFSV3) && 1011191783Srmacklem (error = nfsrv_sattr(nd, nvap, NULL, NULL, p))) 1012191783Srmacklem goto nfsmout; 1013191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1014191783Srmacklem len = fxdr_unsigned(int, *tl); 1015191783Srmacklem if (len > NFS_MAXPATHLEN || len <= 0) { 1016191783Srmacklem error = EBADRPC; 1017191783Srmacklem goto nfsmout; 1018191783Srmacklem } 1019191783Srmacklem MALLOC(pathcp, caddr_t, len + 1, M_TEMP, M_WAITOK); 1020191783Srmacklem error = nfsrv_mtostr(nd, pathcp, len); 1021191783Srmacklem if (error) 1022191783Srmacklem goto nfsmout; 1023191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1024191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 1025191783Srmacklem nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); 1026191783Srmacklem } 1027191783Srmacklem *pathcpp = pathcp; 1028191783Srmacklem *lenp = len; 1029224086Szack NFSEXITCODE2(0, nd); 1030191783Srmacklem return (0); 1031191783Srmacklemnfsmout: 1032191783Srmacklem if (pathcp) 1033191783Srmacklem free(pathcp, M_TEMP); 1034224086Szack NFSEXITCODE2(error, nd); 1035191783Srmacklem return (error); 1036191783Srmacklem} 1037191783Srmacklem 1038191783Srmacklem/* 1039191783Srmacklem * Remove a non-directory object. 1040191783Srmacklem */ 1041191783Srmacklemint 1042191783Srmacklemnfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1043191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1044191783Srmacklem{ 1045191783Srmacklem struct vnode *vp; 1046191783Srmacklem int error = 0; 1047191783Srmacklem 1048191783Srmacklem vp = ndp->ni_vp; 1049191783Srmacklem if (vp->v_type == VDIR) 1050191783Srmacklem error = NFSERR_ISDIR; 1051191783Srmacklem else if (is_v4) 1052191783Srmacklem error = nfsrv_checkremove(vp, 1, p); 1053191783Srmacklem if (!error) 1054191783Srmacklem error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); 1055191783Srmacklem if (ndp->ni_dvp == vp) 1056191783Srmacklem vrele(ndp->ni_dvp); 1057191783Srmacklem else 1058191783Srmacklem vput(ndp->ni_dvp); 1059191783Srmacklem vput(vp); 1060234740Srmacklem if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0) 1061234740Srmacklem nfsvno_relpathbuf(ndp); 1062224086Szack NFSEXITCODE(error); 1063191783Srmacklem return (error); 1064191783Srmacklem} 1065191783Srmacklem 1066191783Srmacklem/* 1067191783Srmacklem * Remove a directory. 1068191783Srmacklem */ 1069191783Srmacklemint 1070191783Srmacklemnfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1071191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1072191783Srmacklem{ 1073191783Srmacklem struct vnode *vp; 1074191783Srmacklem int error = 0; 1075191783Srmacklem 1076191783Srmacklem vp = ndp->ni_vp; 1077191783Srmacklem if (vp->v_type != VDIR) { 1078191783Srmacklem error = ENOTDIR; 1079191783Srmacklem goto out; 1080191783Srmacklem } 1081191783Srmacklem /* 1082191783Srmacklem * No rmdir "." please. 1083191783Srmacklem */ 1084191783Srmacklem if (ndp->ni_dvp == vp) { 1085191783Srmacklem error = EINVAL; 1086191783Srmacklem goto out; 1087191783Srmacklem } 1088191783Srmacklem /* 1089191783Srmacklem * The root of a mounted filesystem cannot be deleted. 1090191783Srmacklem */ 1091191783Srmacklem if (vp->v_vflag & VV_ROOT) 1092191783Srmacklem error = EBUSY; 1093191783Srmacklemout: 1094191783Srmacklem if (!error) 1095191783Srmacklem error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); 1096191783Srmacklem if (ndp->ni_dvp == vp) 1097191783Srmacklem vrele(ndp->ni_dvp); 1098191783Srmacklem else 1099191783Srmacklem vput(ndp->ni_dvp); 1100191783Srmacklem vput(vp); 1101234740Srmacklem if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0) 1102234740Srmacklem nfsvno_relpathbuf(ndp); 1103224086Szack NFSEXITCODE(error); 1104191783Srmacklem return (error); 1105191783Srmacklem} 1106191783Srmacklem 1107191783Srmacklem/* 1108191783Srmacklem * Rename vnode op. 1109191783Srmacklem */ 1110191783Srmacklemint 1111191783Srmacklemnfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, 1112191783Srmacklem u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p) 1113191783Srmacklem{ 1114191783Srmacklem struct vnode *fvp, *tvp, *tdvp; 1115191783Srmacklem int error = 0; 1116191783Srmacklem 1117191783Srmacklem fvp = fromndp->ni_vp; 1118191783Srmacklem if (ndstat) { 1119191783Srmacklem vrele(fromndp->ni_dvp); 1120191783Srmacklem vrele(fvp); 1121191783Srmacklem error = ndstat; 1122191783Srmacklem goto out1; 1123191783Srmacklem } 1124191783Srmacklem tdvp = tondp->ni_dvp; 1125191783Srmacklem tvp = tondp->ni_vp; 1126191783Srmacklem if (tvp != NULL) { 1127191783Srmacklem if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1128191783Srmacklem error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST; 1129191783Srmacklem goto out; 1130191783Srmacklem } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1131191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST; 1132191783Srmacklem goto out; 1133191783Srmacklem } 1134191783Srmacklem if (tvp->v_type == VDIR && tvp->v_mountedhere) { 1135191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1136191783Srmacklem goto out; 1137191783Srmacklem } 1138191783Srmacklem 1139191783Srmacklem /* 1140191783Srmacklem * A rename to '.' or '..' results in a prematurely 1141191783Srmacklem * unlocked vnode on FreeBSD5, so I'm just going to fail that 1142191783Srmacklem * here. 1143191783Srmacklem */ 1144191783Srmacklem if ((tondp->ni_cnd.cn_namelen == 1 && 1145191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.') || 1146191783Srmacklem (tondp->ni_cnd.cn_namelen == 2 && 1147191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.' && 1148191783Srmacklem tondp->ni_cnd.cn_nameptr[1] == '.')) { 1149191783Srmacklem error = EINVAL; 1150191783Srmacklem goto out; 1151191783Srmacklem } 1152191783Srmacklem } 1153191783Srmacklem if (fvp->v_type == VDIR && fvp->v_mountedhere) { 1154191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1155191783Srmacklem goto out; 1156191783Srmacklem } 1157191783Srmacklem if (fvp->v_mount != tdvp->v_mount) { 1158191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1159191783Srmacklem goto out; 1160191783Srmacklem } 1161191783Srmacklem if (fvp == tdvp) { 1162191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL; 1163191783Srmacklem goto out; 1164191783Srmacklem } 1165191783Srmacklem if (fvp == tvp) { 1166191783Srmacklem /* 1167191783Srmacklem * If source and destination are the same, there is nothing to 1168191783Srmacklem * do. Set error to -1 to indicate this. 1169191783Srmacklem */ 1170191783Srmacklem error = -1; 1171191783Srmacklem goto out; 1172191783Srmacklem } 1173191783Srmacklem if (ndflag & ND_NFSV4) { 1174224081Szack if (NFSVOPLOCK(fvp, LK_EXCLUSIVE) == 0) { 1175216893Srmacklem error = nfsrv_checkremove(fvp, 0, p); 1176224082Szack NFSVOPUNLOCK(fvp, 0); 1177216893Srmacklem } else 1178216893Srmacklem error = EPERM; 1179191783Srmacklem if (tvp && !error) 1180191783Srmacklem error = nfsrv_checkremove(tvp, 1, p); 1181191783Srmacklem } else { 1182191783Srmacklem /* 1183191783Srmacklem * For NFSv2 and NFSv3, try to get rid of the delegation, so 1184191783Srmacklem * that the NFSv4 client won't be confused by the rename. 1185191783Srmacklem * Since nfsd_recalldelegation() can only be called on an 1186191783Srmacklem * unlocked vnode at this point and fvp is the file that will 1187191783Srmacklem * still exist after the rename, just do fvp. 1188191783Srmacklem */ 1189191783Srmacklem nfsd_recalldelegation(fvp, p); 1190191783Srmacklem } 1191191783Srmacklemout: 1192191783Srmacklem if (!error) { 1193191783Srmacklem error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, 1194191783Srmacklem &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, 1195191783Srmacklem &tondp->ni_cnd); 1196191783Srmacklem } else { 1197191783Srmacklem if (tdvp == tvp) 1198191783Srmacklem vrele(tdvp); 1199191783Srmacklem else 1200191783Srmacklem vput(tdvp); 1201191783Srmacklem if (tvp) 1202191783Srmacklem vput(tvp); 1203191783Srmacklem vrele(fromndp->ni_dvp); 1204191783Srmacklem vrele(fvp); 1205191783Srmacklem if (error == -1) 1206191783Srmacklem error = 0; 1207191783Srmacklem } 1208191783Srmacklem vrele(tondp->ni_startdir); 1209191783Srmacklem nfsvno_relpathbuf(tondp); 1210191783Srmacklemout1: 1211191783Srmacklem vrele(fromndp->ni_startdir); 1212191783Srmacklem nfsvno_relpathbuf(fromndp); 1213224086Szack NFSEXITCODE(error); 1214191783Srmacklem return (error); 1215191783Srmacklem} 1216191783Srmacklem 1217191783Srmacklem/* 1218191783Srmacklem * Link vnode op. 1219191783Srmacklem */ 1220191783Srmacklemint 1221191783Srmacklemnfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred, 1222191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1223191783Srmacklem{ 1224191783Srmacklem struct vnode *xp; 1225191783Srmacklem int error = 0; 1226191783Srmacklem 1227191783Srmacklem xp = ndp->ni_vp; 1228191783Srmacklem if (xp != NULL) { 1229191783Srmacklem error = EEXIST; 1230191783Srmacklem } else { 1231191783Srmacklem xp = ndp->ni_dvp; 1232191783Srmacklem if (vp->v_mount != xp->v_mount) 1233191783Srmacklem error = EXDEV; 1234191783Srmacklem } 1235191783Srmacklem if (!error) { 1236224081Szack NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY); 1237216893Srmacklem if ((vp->v_iflag & VI_DOOMED) == 0) 1238216893Srmacklem error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); 1239216893Srmacklem else 1240216893Srmacklem error = EPERM; 1241191783Srmacklem if (ndp->ni_dvp == vp) 1242191783Srmacklem vrele(ndp->ni_dvp); 1243191783Srmacklem else 1244191783Srmacklem vput(ndp->ni_dvp); 1245224082Szack NFSVOPUNLOCK(vp, 0); 1246191783Srmacklem } else { 1247191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1248191783Srmacklem vrele(ndp->ni_dvp); 1249191783Srmacklem else 1250191783Srmacklem vput(ndp->ni_dvp); 1251191783Srmacklem if (ndp->ni_vp) 1252191783Srmacklem vrele(ndp->ni_vp); 1253191783Srmacklem } 1254191783Srmacklem nfsvno_relpathbuf(ndp); 1255224086Szack NFSEXITCODE(error); 1256191783Srmacklem return (error); 1257191783Srmacklem} 1258191783Srmacklem 1259191783Srmacklem/* 1260191783Srmacklem * Do the fsync() appropriate for the commit. 1261191783Srmacklem */ 1262191783Srmacklemint 1263191783Srmacklemnfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, 1264191783Srmacklem struct thread *td) 1265191783Srmacklem{ 1266191783Srmacklem int error = 0; 1267191783Srmacklem 1268228560Srmacklem /* 1269228560Srmacklem * RFC 1813 3.3.21: if count is 0, a flush from offset to the end of 1270228560Srmacklem * file is done. At this time VOP_FSYNC does not accept offset and 1271228560Srmacklem * byte count parameters so call VOP_FSYNC the whole file for now. 1272228560Srmacklem * The same is true for NFSv4: RFC 3530 Sec. 14.2.3. 1273228560Srmacklem */ 1274228560Srmacklem if (cnt == 0 || cnt > MAX_COMMIT_COUNT) { 1275191783Srmacklem /* 1276191783Srmacklem * Give up and do the whole thing 1277191783Srmacklem */ 1278191783Srmacklem if (vp->v_object && 1279191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1280248084Sattilio VM_OBJECT_WLOCK(vp->v_object); 1281191783Srmacklem vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC); 1282248084Sattilio VM_OBJECT_WUNLOCK(vp->v_object); 1283191783Srmacklem } 1284191783Srmacklem error = VOP_FSYNC(vp, MNT_WAIT, td); 1285191783Srmacklem } else { 1286191783Srmacklem /* 1287191783Srmacklem * Locate and synchronously write any buffers that fall 1288191783Srmacklem * into the requested range. Note: we are assuming that 1289191783Srmacklem * f_iosize is a power of 2. 1290191783Srmacklem */ 1291191783Srmacklem int iosize = vp->v_mount->mnt_stat.f_iosize; 1292191783Srmacklem int iomask = iosize - 1; 1293191783Srmacklem struct bufobj *bo; 1294191783Srmacklem daddr_t lblkno; 1295191783Srmacklem 1296191783Srmacklem /* 1297191783Srmacklem * Align to iosize boundry, super-align to page boundry. 1298191783Srmacklem */ 1299191783Srmacklem if (off & iomask) { 1300191783Srmacklem cnt += off & iomask; 1301191783Srmacklem off &= ~(u_quad_t)iomask; 1302191783Srmacklem } 1303191783Srmacklem if (off & PAGE_MASK) { 1304191783Srmacklem cnt += off & PAGE_MASK; 1305191783Srmacklem off &= ~(u_quad_t)PAGE_MASK; 1306191783Srmacklem } 1307191783Srmacklem lblkno = off / iosize; 1308191783Srmacklem 1309191783Srmacklem if (vp->v_object && 1310191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1311248084Sattilio VM_OBJECT_WLOCK(vp->v_object); 1312218345Salc vm_object_page_clean(vp->v_object, off, off + cnt, 1313218345Salc OBJPC_SYNC); 1314248084Sattilio VM_OBJECT_WUNLOCK(vp->v_object); 1315191783Srmacklem } 1316191783Srmacklem 1317191783Srmacklem bo = &vp->v_bufobj; 1318191783Srmacklem BO_LOCK(bo); 1319191783Srmacklem while (cnt > 0) { 1320191783Srmacklem struct buf *bp; 1321191783Srmacklem 1322191783Srmacklem /* 1323191783Srmacklem * If we have a buffer and it is marked B_DELWRI we 1324191783Srmacklem * have to lock and write it. Otherwise the prior 1325191783Srmacklem * write is assumed to have already been committed. 1326191783Srmacklem * 1327191783Srmacklem * gbincore() can return invalid buffers now so we 1328191783Srmacklem * have to check that bit as well (though B_DELWRI 1329191783Srmacklem * should not be set if B_INVAL is set there could be 1330191783Srmacklem * a race here since we haven't locked the buffer). 1331191783Srmacklem */ 1332191783Srmacklem if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { 1333191783Srmacklem if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | 1334251171Sjeff LK_INTERLOCK, BO_LOCKPTR(bo)) == ENOLCK) { 1335191783Srmacklem BO_LOCK(bo); 1336191783Srmacklem continue; /* retry */ 1337191783Srmacklem } 1338191783Srmacklem if ((bp->b_flags & (B_DELWRI|B_INVAL)) == 1339191783Srmacklem B_DELWRI) { 1340191783Srmacklem bremfree(bp); 1341191783Srmacklem bp->b_flags &= ~B_ASYNC; 1342191783Srmacklem bwrite(bp); 1343191783Srmacklem ++nfs_commit_miss; 1344191783Srmacklem } else 1345191783Srmacklem BUF_UNLOCK(bp); 1346191783Srmacklem BO_LOCK(bo); 1347191783Srmacklem } 1348191783Srmacklem ++nfs_commit_blks; 1349191783Srmacklem if (cnt < iosize) 1350191783Srmacklem break; 1351191783Srmacklem cnt -= iosize; 1352191783Srmacklem ++lblkno; 1353191783Srmacklem } 1354191783Srmacklem BO_UNLOCK(bo); 1355191783Srmacklem } 1356224086Szack NFSEXITCODE(error); 1357191783Srmacklem return (error); 1358191783Srmacklem} 1359191783Srmacklem 1360191783Srmacklem/* 1361191783Srmacklem * Statfs vnode op. 1362191783Srmacklem */ 1363191783Srmacklemint 1364191990Sattilionfsvno_statfs(struct vnode *vp, struct statfs *sf) 1365191783Srmacklem{ 1366221517Srmacklem int error; 1367191783Srmacklem 1368221517Srmacklem error = VFS_STATFS(vp->v_mount, sf); 1369221517Srmacklem if (error == 0) { 1370221517Srmacklem /* 1371221517Srmacklem * Since NFS handles these values as unsigned on the 1372221517Srmacklem * wire, there is no way to represent negative values, 1373221517Srmacklem * so set them to 0. Without this, they will appear 1374221517Srmacklem * to be very large positive values for clients like 1375221517Srmacklem * Solaris10. 1376221517Srmacklem */ 1377221517Srmacklem if (sf->f_bavail < 0) 1378221517Srmacklem sf->f_bavail = 0; 1379221517Srmacklem if (sf->f_ffree < 0) 1380221517Srmacklem sf->f_ffree = 0; 1381221517Srmacklem } 1382224086Szack NFSEXITCODE(error); 1383221517Srmacklem return (error); 1384191783Srmacklem} 1385191783Srmacklem 1386191783Srmacklem/* 1387191783Srmacklem * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1388191783Srmacklem * must handle nfsrv_opencheck() calls after any other access checks. 1389191783Srmacklem */ 1390191783Srmacklemvoid 1391191783Srmacklemnfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1392191783Srmacklem nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1393199616Srmacklem int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, 1394191783Srmacklem NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p, 1395191783Srmacklem struct nfsexstuff *exp, struct vnode **vpp) 1396191783Srmacklem{ 1397191783Srmacklem struct vnode *vp = NULL; 1398191783Srmacklem u_quad_t tempsize; 1399191783Srmacklem struct nfsexstuff nes; 1400191783Srmacklem 1401191783Srmacklem if (ndp->ni_vp == NULL) 1402191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1403191783Srmacklem stateidp, stp, NULL, nd, p, nd->nd_repstat); 1404191783Srmacklem if (!nd->nd_repstat) { 1405191783Srmacklem if (ndp->ni_vp == NULL) { 1406191783Srmacklem vrele(ndp->ni_startdir); 1407191783Srmacklem nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1408191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1409191783Srmacklem vput(ndp->ni_dvp); 1410191783Srmacklem nfsvno_relpathbuf(ndp); 1411191783Srmacklem if (!nd->nd_repstat) { 1412191783Srmacklem if (*exclusive_flagp) { 1413191783Srmacklem *exclusive_flagp = 0; 1414191783Srmacklem NFSVNO_ATTRINIT(nvap); 1415199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 1416199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 1417191783Srmacklem nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1418191783Srmacklem &nvap->na_vattr, cred); 1419191783Srmacklem } else { 1420191783Srmacklem nfsrv_fixattr(nd, ndp->ni_vp, nvap, 1421191783Srmacklem aclp, p, attrbitp, exp); 1422191783Srmacklem } 1423191783Srmacklem } 1424191783Srmacklem vp = ndp->ni_vp; 1425191783Srmacklem } else { 1426191783Srmacklem if (ndp->ni_startdir) 1427191783Srmacklem vrele(ndp->ni_startdir); 1428191783Srmacklem nfsvno_relpathbuf(ndp); 1429191783Srmacklem vp = ndp->ni_vp; 1430191783Srmacklem if (create == NFSV4OPEN_CREATE) { 1431191783Srmacklem if (ndp->ni_dvp == vp) 1432191783Srmacklem vrele(ndp->ni_dvp); 1433191783Srmacklem else 1434191783Srmacklem vput(ndp->ni_dvp); 1435191783Srmacklem } 1436191783Srmacklem if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 1437191783Srmacklem if (ndp->ni_cnd.cn_flags & RDONLY) 1438191783Srmacklem NFSVNO_SETEXRDONLY(&nes); 1439191783Srmacklem else 1440191783Srmacklem NFSVNO_EXINIT(&nes); 1441191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, 1442200999Srmacklem VWRITE, cred, &nes, p, 1443200999Srmacklem NFSACCCHK_NOOVERRIDE, 1444200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1445191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1446191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1447191783Srmacklem if (!nd->nd_repstat) { 1448191783Srmacklem tempsize = nvap->na_size; 1449191783Srmacklem NFSVNO_ATTRINIT(nvap); 1450191783Srmacklem nvap->na_size = tempsize; 1451191783Srmacklem nd->nd_repstat = VOP_SETATTR(vp, 1452191783Srmacklem &nvap->na_vattr, cred); 1453191783Srmacklem } 1454191783Srmacklem } else if (vp->v_type == VREG) { 1455191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1456191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1457191783Srmacklem } 1458191783Srmacklem } 1459191783Srmacklem } else { 1460191783Srmacklem if (ndp->ni_cnd.cn_flags & HASBUF) 1461191783Srmacklem nfsvno_relpathbuf(ndp); 1462191783Srmacklem if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) { 1463191783Srmacklem vrele(ndp->ni_startdir); 1464191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1465191783Srmacklem vrele(ndp->ni_dvp); 1466191783Srmacklem else 1467191783Srmacklem vput(ndp->ni_dvp); 1468191783Srmacklem if (ndp->ni_vp) 1469191783Srmacklem vput(ndp->ni_vp); 1470191783Srmacklem } 1471191783Srmacklem } 1472191783Srmacklem *vpp = vp; 1473224086Szack 1474224086Szack NFSEXITCODE2(0, nd); 1475191783Srmacklem} 1476191783Srmacklem 1477191783Srmacklem/* 1478191783Srmacklem * Updates the file rev and sets the mtime and ctime 1479191783Srmacklem * to the current clock time, returning the va_filerev and va_Xtime 1480191783Srmacklem * values. 1481260159Srmacklem * Return ESTALE to indicate the vnode is VI_DOOMED. 1482191783Srmacklem */ 1483260159Srmacklemint 1484191783Srmacklemnfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 1485191783Srmacklem struct ucred *cred, struct thread *p) 1486191783Srmacklem{ 1487191783Srmacklem struct vattr va; 1488191783Srmacklem 1489191783Srmacklem VATTR_NULL(&va); 1490245611Sjhb vfs_timestamp(&va.va_mtime); 1491260159Srmacklem if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { 1492260159Srmacklem NFSVOPLOCK(vp, LK_UPGRADE | LK_RETRY); 1493260159Srmacklem if ((vp->v_iflag & VI_DOOMED) != 0) 1494260159Srmacklem return (ESTALE); 1495260159Srmacklem } 1496191783Srmacklem (void) VOP_SETATTR(vp, &va, cred); 1497216693Srmacklem (void) nfsvno_getattr(vp, nvap, cred, p, 1); 1498260159Srmacklem return (0); 1499191783Srmacklem} 1500191783Srmacklem 1501191783Srmacklem/* 1502191783Srmacklem * Glue routine to nfsv4_fillattr(). 1503191783Srmacklem */ 1504191783Srmacklemint 1505220645Srmacklemnfsvno_fillattr(struct nfsrv_descript *nd, struct mount *mp, struct vnode *vp, 1506191783Srmacklem struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 1507220648Srmacklem struct ucred *cred, struct thread *p, int isdgram, int reterr, 1508220648Srmacklem int supports_nfsv4acls, int at_root, uint64_t mounted_on_fileno) 1509191783Srmacklem{ 1510191783Srmacklem int error; 1511191783Srmacklem 1512220645Srmacklem error = nfsv4_fillattr(nd, mp, vp, NULL, &nvap->na_vattr, fhp, rderror, 1513220648Srmacklem attrbitp, cred, p, isdgram, reterr, supports_nfsv4acls, at_root, 1514220648Srmacklem mounted_on_fileno); 1515224086Szack NFSEXITCODE2(0, nd); 1516191783Srmacklem return (error); 1517191783Srmacklem} 1518191783Srmacklem 1519191783Srmacklem/* Since the Readdir vnode ops vary, put the entire functions in here. */ 1520191783Srmacklem/* 1521191783Srmacklem * nfs readdir service 1522191783Srmacklem * - mallocs what it thinks is enough to read 1523191783Srmacklem * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 1524206170Srmacklem * - calls VOP_READDIR() 1525191783Srmacklem * - loops around building the reply 1526191783Srmacklem * if the output generated exceeds count break out of loop 1527191783Srmacklem * The NFSM_CLGET macro is used here so that the reply will be packed 1528191783Srmacklem * tightly in mbuf clusters. 1529191783Srmacklem * - it trims out records with d_fileno == 0 1530191783Srmacklem * this doesn't matter for Unix clients, but they might confuse clients 1531191783Srmacklem * for other os'. 1532191783Srmacklem * - it trims out records with d_type == DT_WHT 1533191783Srmacklem * these cannot be seen through NFS (unless we extend the protocol) 1534191783Srmacklem * The alternate call nfsrvd_readdirplus() does lookups as well. 1535191783Srmacklem * PS: The NFS protocol spec. does not clarify what the "count" byte 1536191783Srmacklem * argument is a count of.. just name strings and file id's or the 1537191783Srmacklem * entire reply rpc or ... 1538191783Srmacklem * I tried just file name and id sizes and it confused the Sun client, 1539191783Srmacklem * so I am using the full rpc size now. The "paranoia.." comment refers 1540191783Srmacklem * to including the status longwords that are not a part of the dir. 1541191783Srmacklem * "entry" structures, but are in the rpc. 1542191783Srmacklem */ 1543191783Srmacklemint 1544191783Srmacklemnfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 1545191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1546191783Srmacklem{ 1547191783Srmacklem struct dirent *dp; 1548191783Srmacklem u_int32_t *tl; 1549191783Srmacklem int dirlen; 1550191783Srmacklem char *cpos, *cend, *rbuf; 1551191783Srmacklem struct nfsvattr at; 1552191783Srmacklem int nlen, error = 0, getret = 1; 1553191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies; 1554191783Srmacklem u_int64_t off, toff, verf; 1555191783Srmacklem u_long *cookies = NULL, *cookiep; 1556191783Srmacklem struct uio io; 1557191783Srmacklem struct iovec iv; 1558268961Sbdrewery int is_ufs; 1559191783Srmacklem 1560191783Srmacklem if (nd->nd_repstat) { 1561191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1562224086Szack goto out; 1563191783Srmacklem } 1564191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1565191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1566191783Srmacklem off = fxdr_unsigned(u_quad_t, *tl++); 1567191783Srmacklem } else { 1568191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1569191783Srmacklem off = fxdr_hyper(tl); 1570191783Srmacklem tl += 2; 1571191783Srmacklem verf = fxdr_hyper(tl); 1572191783Srmacklem tl += 2; 1573191783Srmacklem } 1574191783Srmacklem toff = off; 1575191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1576206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1577191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1578191783Srmacklem siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1579191783Srmacklem fullsiz = siz; 1580191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1581191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, 1582216693Srmacklem p, 1); 1583191783Srmacklem#if 0 1584191783Srmacklem /* 1585191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1586191783Srmacklem * since it is not supposed to change when entries are 1587191783Srmacklem * removed/added unless that offset cookies returned to 1588191783Srmacklem * the client are no longer valid. 1589191783Srmacklem */ 1590191783Srmacklem if (!nd->nd_repstat && toff && verf != at.na_filerev) 1591191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1592191783Srmacklem#endif 1593191783Srmacklem } 1594250055Sdes if (!nd->nd_repstat && vp->v_type != VDIR) 1595250055Sdes nd->nd_repstat = NFSERR_NOTDIR; 1596206170Srmacklem if (nd->nd_repstat == 0 && cnt == 0) { 1597206170Srmacklem if (nd->nd_flag & ND_NFSV2) 1598206170Srmacklem /* NFSv2 does not have NFSERR_TOOSMALL */ 1599206170Srmacklem nd->nd_repstat = EPERM; 1600206170Srmacklem else 1601206170Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1602206170Srmacklem } 1603191783Srmacklem if (!nd->nd_repstat) 1604200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1605191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1606200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1607191783Srmacklem if (nd->nd_repstat) { 1608191783Srmacklem vput(vp); 1609191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1610191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1611224086Szack goto out; 1612191783Srmacklem } 1613268961Sbdrewery is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0; 1614191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1615191783Srmacklemagain: 1616191783Srmacklem eofflag = 0; 1617191783Srmacklem if (cookies) { 1618191783Srmacklem free((caddr_t)cookies, M_TEMP); 1619191783Srmacklem cookies = NULL; 1620191783Srmacklem } 1621191783Srmacklem 1622191783Srmacklem iv.iov_base = rbuf; 1623191783Srmacklem iv.iov_len = siz; 1624191783Srmacklem io.uio_iov = &iv; 1625191783Srmacklem io.uio_iovcnt = 1; 1626191783Srmacklem io.uio_offset = (off_t)off; 1627191783Srmacklem io.uio_resid = siz; 1628191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1629191783Srmacklem io.uio_rw = UIO_READ; 1630191783Srmacklem io.uio_td = NULL; 1631191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1632191783Srmacklem &cookies); 1633191783Srmacklem off = (u_int64_t)io.uio_offset; 1634191783Srmacklem if (io.uio_resid) 1635191783Srmacklem siz -= io.uio_resid; 1636191783Srmacklem 1637191783Srmacklem if (!cookies && !nd->nd_repstat) 1638191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1639191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1640216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1641191783Srmacklem if (!nd->nd_repstat) 1642191783Srmacklem nd->nd_repstat = getret; 1643191783Srmacklem } 1644191783Srmacklem 1645191783Srmacklem /* 1646191783Srmacklem * Handles the failed cases. nd->nd_repstat == 0 past here. 1647191783Srmacklem */ 1648191783Srmacklem if (nd->nd_repstat) { 1649216692Srmacklem vput(vp); 1650191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1651191783Srmacklem if (cookies) 1652191783Srmacklem free((caddr_t)cookies, M_TEMP); 1653191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1654191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1655224086Szack goto out; 1656191783Srmacklem } 1657191783Srmacklem /* 1658191783Srmacklem * If nothing read, return eof 1659191783Srmacklem * rpc reply 1660191783Srmacklem */ 1661191783Srmacklem if (siz == 0) { 1662216692Srmacklem vput(vp); 1663191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1664191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1665191783Srmacklem } else { 1666191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1667191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1668191783Srmacklem txdr_hyper(at.na_filerev, tl); 1669191783Srmacklem tl += 2; 1670191783Srmacklem } 1671191783Srmacklem *tl++ = newnfs_false; 1672191783Srmacklem *tl = newnfs_true; 1673191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1674191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1675224086Szack goto out; 1676191783Srmacklem } 1677191783Srmacklem 1678191783Srmacklem /* 1679191783Srmacklem * Check for degenerate cases of nothing useful read. 1680191783Srmacklem * If so go try again 1681191783Srmacklem */ 1682191783Srmacklem cpos = rbuf; 1683191783Srmacklem cend = rbuf + siz; 1684191783Srmacklem dp = (struct dirent *)cpos; 1685191783Srmacklem cookiep = cookies; 1686191783Srmacklem 1687191783Srmacklem /* 1688191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1689191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1690191783Srmacklem * skip over the records that precede the requested offset. This 1691191783Srmacklem * requires the assumption that file offset cookies monotonically 1692191783Srmacklem * increase. 1693191783Srmacklem */ 1694191783Srmacklem while (cpos < cend && ncookies > 0 && 1695191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1696268961Sbdrewery (is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff))) { 1697191783Srmacklem cpos += dp->d_reclen; 1698191783Srmacklem dp = (struct dirent *)cpos; 1699191783Srmacklem cookiep++; 1700191783Srmacklem ncookies--; 1701191783Srmacklem } 1702191783Srmacklem if (cpos >= cend || ncookies == 0) { 1703191783Srmacklem siz = fullsiz; 1704191783Srmacklem toff = off; 1705191783Srmacklem goto again; 1706191783Srmacklem } 1707216692Srmacklem vput(vp); 1708191783Srmacklem 1709191783Srmacklem /* 1710191783Srmacklem * dirlen is the size of the reply, including all XDR and must 1711191783Srmacklem * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 1712191783Srmacklem * if the XDR should be included in "count", but to be safe, we do. 1713191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now.) 1714191783Srmacklem */ 1715191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1716191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1717191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1718191783Srmacklem txdr_hyper(at.na_filerev, tl); 1719191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1720191783Srmacklem } else { 1721191783Srmacklem dirlen = 2 * NFSX_UNSIGNED; 1722191783Srmacklem } 1723191783Srmacklem 1724191783Srmacklem /* Loop through the records and build reply */ 1725191783Srmacklem while (cpos < cend && ncookies > 0) { 1726191783Srmacklem nlen = dp->d_namlen; 1727191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1728191783Srmacklem nlen <= NFS_MAXNAMLEN) { 1729191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1730191783Srmacklem dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1731191783Srmacklem else 1732191783Srmacklem dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1733191783Srmacklem if (dirlen > cnt) { 1734191783Srmacklem eofflag = 0; 1735191783Srmacklem break; 1736191783Srmacklem } 1737191783Srmacklem 1738191783Srmacklem /* 1739191783Srmacklem * Build the directory record xdr from 1740191783Srmacklem * the dirent entry. 1741191783Srmacklem */ 1742191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1743191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1744191783Srmacklem *tl++ = newnfs_true; 1745191783Srmacklem *tl++ = 0; 1746191783Srmacklem } else { 1747191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1748191783Srmacklem *tl++ = newnfs_true; 1749191783Srmacklem } 1750191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1751191783Srmacklem (void) nfsm_strtom(nd, dp->d_name, nlen); 1752191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1753191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1754191783Srmacklem *tl++ = 0; 1755191783Srmacklem } else 1756191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1757191783Srmacklem *tl = txdr_unsigned(*cookiep); 1758191783Srmacklem } 1759191783Srmacklem cpos += dp->d_reclen; 1760191783Srmacklem dp = (struct dirent *)cpos; 1761191783Srmacklem cookiep++; 1762191783Srmacklem ncookies--; 1763191783Srmacklem } 1764191783Srmacklem if (cpos < cend) 1765191783Srmacklem eofflag = 0; 1766191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1767191783Srmacklem *tl++ = newnfs_false; 1768191783Srmacklem if (eofflag) 1769191783Srmacklem *tl = newnfs_true; 1770191783Srmacklem else 1771191783Srmacklem *tl = newnfs_false; 1772191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1773191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1774224086Szack 1775224086Szackout: 1776224086Szack NFSEXITCODE2(0, nd); 1777191783Srmacklem return (0); 1778191783Srmacklemnfsmout: 1779191783Srmacklem vput(vp); 1780224086Szack NFSEXITCODE2(error, nd); 1781191783Srmacklem return (error); 1782191783Srmacklem} 1783191783Srmacklem 1784191783Srmacklem/* 1785191783Srmacklem * Readdirplus for V3 and Readdir for V4. 1786191783Srmacklem */ 1787191783Srmacklemint 1788191783Srmacklemnfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 1789191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1790191783Srmacklem{ 1791191783Srmacklem struct dirent *dp; 1792191783Srmacklem u_int32_t *tl; 1793191783Srmacklem int dirlen; 1794191783Srmacklem char *cpos, *cend, *rbuf; 1795191783Srmacklem struct vnode *nvp; 1796191783Srmacklem fhandle_t nfh; 1797191783Srmacklem struct nfsvattr nva, at, *nvap = &nva; 1798191783Srmacklem struct mbuf *mb0, *mb1; 1799191783Srmacklem struct nfsreferral *refp; 1800199715Srmacklem int nlen, r, error = 0, getret = 1, usevget = 1; 1801191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 1802191783Srmacklem caddr_t bpos0, bpos1; 1803191783Srmacklem u_int64_t off, toff, verf; 1804191783Srmacklem u_long *cookies = NULL, *cookiep; 1805191783Srmacklem nfsattrbit_t attrbits, rderrbits, savbits; 1806191783Srmacklem struct uio io; 1807191783Srmacklem struct iovec iv; 1808199715Srmacklem struct componentname cn; 1809268961Sbdrewery int at_root, is_ufs, is_zfs, needs_unbusy, supports_nfsv4acls; 1810220645Srmacklem struct mount *mp, *new_mp; 1811220645Srmacklem uint64_t mounted_on_fileno; 1812191783Srmacklem 1813191783Srmacklem if (nd->nd_repstat) { 1814191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1815224086Szack goto out; 1816191783Srmacklem } 1817191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 1818191783Srmacklem off = fxdr_hyper(tl); 1819191783Srmacklem toff = off; 1820191783Srmacklem tl += 2; 1821191783Srmacklem verf = fxdr_hyper(tl); 1822191783Srmacklem tl += 2; 1823191783Srmacklem siz = fxdr_unsigned(int, *tl++); 1824191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1825191783Srmacklem 1826191783Srmacklem /* 1827191783Srmacklem * Use the server's maximum data transfer size as the upper bound 1828191783Srmacklem * on reply datalen. 1829191783Srmacklem */ 1830206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1831191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1832191783Srmacklem 1833191783Srmacklem /* 1834191783Srmacklem * siz is a "hint" of how much directory information (name, fileid, 1835191783Srmacklem * cookie) should be in the reply. At least one client "hints" 0, 1836191783Srmacklem * so I set it to cnt for that case. I also round it up to the 1837191783Srmacklem * next multiple of DIRBLKSIZ. 1838191783Srmacklem */ 1839206170Srmacklem if (siz <= 0) 1840191783Srmacklem siz = cnt; 1841191783Srmacklem siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1842191783Srmacklem 1843191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1844191783Srmacklem error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1845191783Srmacklem if (error) 1846191783Srmacklem goto nfsmout; 1847191783Srmacklem NFSSET_ATTRBIT(&savbits, &attrbits); 1848191783Srmacklem NFSCLRNOTFILLABLE_ATTRBIT(&attrbits); 1849191783Srmacklem NFSZERO_ATTRBIT(&rderrbits); 1850191783Srmacklem NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 1851191783Srmacklem } else { 1852191783Srmacklem NFSZERO_ATTRBIT(&attrbits); 1853191783Srmacklem } 1854191783Srmacklem fullsiz = siz; 1855216693Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1856191783Srmacklem if (!nd->nd_repstat) { 1857191783Srmacklem if (off && verf != at.na_filerev) { 1858191783Srmacklem /* 1859191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1860191783Srmacklem * since it is not supposed to change when entries are 1861191783Srmacklem * removed/added unless that offset cookies returned to 1862191783Srmacklem * the client are no longer valid. 1863191783Srmacklem */ 1864191783Srmacklem#if 0 1865191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1866191783Srmacklem nd->nd_repstat = NFSERR_NOTSAME; 1867191783Srmacklem } else { 1868191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1869191783Srmacklem } 1870191783Srmacklem#endif 1871191783Srmacklem } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) { 1872191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1873191783Srmacklem } 1874191783Srmacklem } 1875191783Srmacklem if (!nd->nd_repstat && vp->v_type != VDIR) 1876191783Srmacklem nd->nd_repstat = NFSERR_NOTDIR; 1877191783Srmacklem if (!nd->nd_repstat && cnt == 0) 1878191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1879191783Srmacklem if (!nd->nd_repstat) 1880200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1881191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1882200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1883191783Srmacklem if (nd->nd_repstat) { 1884191783Srmacklem vput(vp); 1885191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1886191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1887224086Szack goto out; 1888191783Srmacklem } 1889268961Sbdrewery is_ufs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "ufs") == 0; 1890268961Sbdrewery is_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs") == 0; 1891191783Srmacklem 1892191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1893191783Srmacklemagain: 1894191783Srmacklem eofflag = 0; 1895191783Srmacklem if (cookies) { 1896191783Srmacklem free((caddr_t)cookies, M_TEMP); 1897191783Srmacklem cookies = NULL; 1898191783Srmacklem } 1899191783Srmacklem 1900191783Srmacklem iv.iov_base = rbuf; 1901191783Srmacklem iv.iov_len = siz; 1902191783Srmacklem io.uio_iov = &iv; 1903191783Srmacklem io.uio_iovcnt = 1; 1904191783Srmacklem io.uio_offset = (off_t)off; 1905191783Srmacklem io.uio_resid = siz; 1906191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1907191783Srmacklem io.uio_rw = UIO_READ; 1908191783Srmacklem io.uio_td = NULL; 1909191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1910191783Srmacklem &cookies); 1911191783Srmacklem off = (u_int64_t)io.uio_offset; 1912191783Srmacklem if (io.uio_resid) 1913191783Srmacklem siz -= io.uio_resid; 1914191783Srmacklem 1915216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1916191783Srmacklem 1917191783Srmacklem if (!cookies && !nd->nd_repstat) 1918191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1919191783Srmacklem if (!nd->nd_repstat) 1920191783Srmacklem nd->nd_repstat = getret; 1921191783Srmacklem if (nd->nd_repstat) { 1922199715Srmacklem vput(vp); 1923191783Srmacklem if (cookies) 1924191783Srmacklem free((caddr_t)cookies, M_TEMP); 1925191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1926191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1927191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1928224086Szack goto out; 1929191783Srmacklem } 1930191783Srmacklem /* 1931191783Srmacklem * If nothing read, return eof 1932191783Srmacklem * rpc reply 1933191783Srmacklem */ 1934191783Srmacklem if (siz == 0) { 1935199715Srmacklem vput(vp); 1936191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1937191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1938191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1939191783Srmacklem txdr_hyper(at.na_filerev, tl); 1940191783Srmacklem tl += 2; 1941191783Srmacklem *tl++ = newnfs_false; 1942191783Srmacklem *tl = newnfs_true; 1943191783Srmacklem free((caddr_t)cookies, M_TEMP); 1944191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1945224086Szack goto out; 1946191783Srmacklem } 1947191783Srmacklem 1948191783Srmacklem /* 1949191783Srmacklem * Check for degenerate cases of nothing useful read. 1950191783Srmacklem * If so go try again 1951191783Srmacklem */ 1952191783Srmacklem cpos = rbuf; 1953191783Srmacklem cend = rbuf + siz; 1954191783Srmacklem dp = (struct dirent *)cpos; 1955191783Srmacklem cookiep = cookies; 1956191783Srmacklem 1957191783Srmacklem /* 1958191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1959191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1960191783Srmacklem * skip over the records that precede the requested offset. This 1961191783Srmacklem * requires the assumption that file offset cookies monotonically 1962191783Srmacklem * increase. 1963191783Srmacklem */ 1964191783Srmacklem while (cpos < cend && ncookies > 0 && 1965191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1966268961Sbdrewery (is_ufs == 1 && ((u_quad_t)(*cookiep)) <= toff) || 1967191783Srmacklem ((nd->nd_flag & ND_NFSV4) && 1968191783Srmacklem ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 1969191783Srmacklem (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 1970191783Srmacklem cpos += dp->d_reclen; 1971191783Srmacklem dp = (struct dirent *)cpos; 1972191783Srmacklem cookiep++; 1973191783Srmacklem ncookies--; 1974191783Srmacklem } 1975191783Srmacklem if (cpos >= cend || ncookies == 0) { 1976191783Srmacklem siz = fullsiz; 1977191783Srmacklem toff = off; 1978191783Srmacklem goto again; 1979191783Srmacklem } 1980217176Srmacklem 1981217176Srmacklem /* 1982217176Srmacklem * Busy the file system so that the mount point won't go away 1983217176Srmacklem * and, as such, VFS_VGET() can be used safely. 1984217176Srmacklem */ 1985217176Srmacklem mp = vp->v_mount; 1986217176Srmacklem vfs_ref(mp); 1987224082Szack NFSVOPUNLOCK(vp, 0); 1988217176Srmacklem nd->nd_repstat = vfs_busy(mp, 0); 1989217176Srmacklem vfs_rel(mp); 1990217176Srmacklem if (nd->nd_repstat != 0) { 1991217176Srmacklem vrele(vp); 1992217176Srmacklem free(cookies, M_TEMP); 1993217176Srmacklem free(rbuf, M_TEMP); 1994217176Srmacklem if (nd->nd_flag & ND_NFSV3) 1995217176Srmacklem nfsrv_postopattr(nd, getret, &at); 1996224086Szack goto out; 1997217176Srmacklem } 1998191783Srmacklem 1999191783Srmacklem /* 2000260144Srmacklem * Check to see if entries in this directory can be safely acquired 2001260144Srmacklem * via VFS_VGET() or if a switch to VOP_LOOKUP() is required. 2002260144Srmacklem * ZFS snapshot directories need VOP_LOOKUP(), so that any 2003260144Srmacklem * automount of the snapshot directory that is required will 2004260144Srmacklem * be done. 2005260144Srmacklem * This needs to be done here for NFSv4, since NFSv4 never does 2006260144Srmacklem * a VFS_VGET() for "." or "..". 2007260144Srmacklem */ 2008268961Sbdrewery if (is_zfs == 1) { 2009260144Srmacklem r = VFS_VGET(mp, at.na_fileid, LK_SHARED, &nvp); 2010260144Srmacklem if (r == EOPNOTSUPP) { 2011260144Srmacklem usevget = 0; 2012260144Srmacklem cn.cn_nameiop = LOOKUP; 2013260144Srmacklem cn.cn_lkflags = LK_SHARED | LK_RETRY; 2014260144Srmacklem cn.cn_cred = nd->nd_cred; 2015260144Srmacklem cn.cn_thread = p; 2016260144Srmacklem } else if (r == 0) 2017260144Srmacklem vput(nvp); 2018260144Srmacklem } 2019260144Srmacklem 2020260144Srmacklem /* 2021191783Srmacklem * Save this position, in case there is an error before one entry 2022191783Srmacklem * is created. 2023191783Srmacklem */ 2024191783Srmacklem mb0 = nd->nd_mb; 2025191783Srmacklem bpos0 = nd->nd_bpos; 2026191783Srmacklem 2027191783Srmacklem /* 2028191783Srmacklem * Fill in the first part of the reply. 2029191783Srmacklem * dirlen is the reply length in bytes and cannot exceed cnt. 2030191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now, 2031191783Srmacklem * so we recognize when we have exceeded cnt.) 2032191783Srmacklem */ 2033191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 2034191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 2035191783Srmacklem nfsrv_postopattr(nd, getret, &at); 2036191783Srmacklem } else { 2037191783Srmacklem dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 2038191783Srmacklem } 2039191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2040191783Srmacklem txdr_hyper(at.na_filerev, tl); 2041191783Srmacklem 2042191783Srmacklem /* 2043191783Srmacklem * Save this position, in case there is an empty reply needed. 2044191783Srmacklem */ 2045191783Srmacklem mb1 = nd->nd_mb; 2046191783Srmacklem bpos1 = nd->nd_bpos; 2047191783Srmacklem 2048191783Srmacklem /* Loop through the records and build reply */ 2049191783Srmacklem entrycnt = 0; 2050191783Srmacklem while (cpos < cend && ncookies > 0 && dirlen < cnt) { 2051191783Srmacklem nlen = dp->d_namlen; 2052191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 2053191783Srmacklem nlen <= NFS_MAXNAMLEN && 2054191783Srmacklem ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 2055191783Srmacklem (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 2056191783Srmacklem || (nlen == 1 && dp->d_name[0] != '.'))) { 2057191783Srmacklem /* 2058191783Srmacklem * Save the current position in the reply, in case 2059191783Srmacklem * this entry exceeds cnt. 2060191783Srmacklem */ 2061191783Srmacklem mb1 = nd->nd_mb; 2062191783Srmacklem bpos1 = nd->nd_bpos; 2063191783Srmacklem 2064191783Srmacklem /* 2065191783Srmacklem * For readdir_and_lookup get the vnode using 2066191783Srmacklem * the file number. 2067191783Srmacklem */ 2068191783Srmacklem nvp = NULL; 2069191783Srmacklem refp = NULL; 2070191783Srmacklem r = 0; 2071220645Srmacklem at_root = 0; 2072220645Srmacklem needs_unbusy = 0; 2073220645Srmacklem new_mp = mp; 2074220645Srmacklem mounted_on_fileno = (uint64_t)dp->d_fileno; 2075191783Srmacklem if ((nd->nd_flag & ND_NFSV3) || 2076191783Srmacklem NFSNONZERO_ATTRBIT(&savbits)) { 2077191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2078191783Srmacklem refp = nfsv4root_getreferral(NULL, 2079191783Srmacklem vp, dp->d_fileno); 2080199715Srmacklem if (refp == NULL) { 2081199715Srmacklem if (usevget) 2082217176Srmacklem r = VFS_VGET(mp, dp->d_fileno, 2083217176Srmacklem LK_SHARED, &nvp); 2084199715Srmacklem else 2085199715Srmacklem r = EOPNOTSUPP; 2086199715Srmacklem if (r == EOPNOTSUPP) { 2087199715Srmacklem if (usevget) { 2088199715Srmacklem usevget = 0; 2089199715Srmacklem cn.cn_nameiop = LOOKUP; 2090199715Srmacklem cn.cn_lkflags = 2091216700Srmacklem LK_SHARED | 2092199715Srmacklem LK_RETRY; 2093199715Srmacklem cn.cn_cred = 2094199715Srmacklem nd->nd_cred; 2095199715Srmacklem cn.cn_thread = p; 2096199715Srmacklem } 2097199715Srmacklem cn.cn_nameptr = dp->d_name; 2098199715Srmacklem cn.cn_namelen = nlen; 2099199715Srmacklem cn.cn_flags = ISLASTCN | 2100241896Skib NOFOLLOW | LOCKLEAF; 2101199715Srmacklem if (nlen == 2 && 2102199715Srmacklem dp->d_name[0] == '.' && 2103199715Srmacklem dp->d_name[1] == '.') 2104199715Srmacklem cn.cn_flags |= 2105199715Srmacklem ISDOTDOT; 2106224081Szack if (NFSVOPLOCK(vp, LK_SHARED) 2107216692Srmacklem != 0) { 2108216692Srmacklem nd->nd_repstat = EPERM; 2109216692Srmacklem break; 2110216692Srmacklem } 2111214149Srmacklem if ((vp->v_vflag & VV_ROOT) != 0 2112214149Srmacklem && (cn.cn_flags & ISDOTDOT) 2113214149Srmacklem != 0) { 2114214149Srmacklem vref(vp); 2115214149Srmacklem nvp = vp; 2116214149Srmacklem r = 0; 2117220507Srmacklem } else { 2118214149Srmacklem r = VOP_LOOKUP(vp, &nvp, 2119214149Srmacklem &cn); 2120220507Srmacklem if (vp != nvp) 2121224082Szack NFSVOPUNLOCK(vp, 2122220507Srmacklem 0); 2123220507Srmacklem } 2124199715Srmacklem } 2125220645Srmacklem 2126220645Srmacklem /* 2127220645Srmacklem * For NFSv4, check to see if nvp is 2128220645Srmacklem * a mount point and get the mount 2129220645Srmacklem * point vnode, as required. 2130220645Srmacklem */ 2131220645Srmacklem if (r == 0 && 2132220645Srmacklem nfsrv_enable_crossmntpt != 0 && 2133220645Srmacklem (nd->nd_flag & ND_NFSV4) != 0 && 2134220645Srmacklem nvp->v_type == VDIR && 2135220645Srmacklem nvp->v_mountedhere != NULL) { 2136220645Srmacklem new_mp = nvp->v_mountedhere; 2137220645Srmacklem r = vfs_busy(new_mp, 0); 2138220645Srmacklem vput(nvp); 2139220645Srmacklem nvp = NULL; 2140220645Srmacklem if (r == 0) { 2141220645Srmacklem r = VFS_ROOT(new_mp, 2142220645Srmacklem LK_SHARED, &nvp); 2143220645Srmacklem needs_unbusy = 1; 2144220645Srmacklem if (r == 0) 2145220645Srmacklem at_root = 1; 2146220645Srmacklem } 2147220645Srmacklem } 2148199715Srmacklem } 2149191783Srmacklem if (!r) { 2150191783Srmacklem if (refp == NULL && 2151191783Srmacklem ((nd->nd_flag & ND_NFSV3) || 2152191783Srmacklem NFSNONZERO_ATTRBIT(&attrbits))) { 2153191783Srmacklem r = nfsvno_getfh(nvp, &nfh, p); 2154191783Srmacklem if (!r) 2155191783Srmacklem r = nfsvno_getattr(nvp, nvap, 2156216693Srmacklem nd->nd_cred, p, 1); 2157268961Sbdrewery if (r == 0 && is_zfs == 1 && 2158260144Srmacklem nfsrv_enable_crossmntpt != 0 && 2159260144Srmacklem (nd->nd_flag & ND_NFSV4) != 0 && 2160260144Srmacklem nvp->v_type == VDIR && 2161260144Srmacklem vp->v_mount != nvp->v_mount) { 2162260144Srmacklem /* 2163260144Srmacklem * For a ZFS snapshot, there is a 2164260144Srmacklem * pseudo mount that does not set 2165260144Srmacklem * v_mountedhere, so it needs to 2166260144Srmacklem * be detected via a different 2167260144Srmacklem * mount structure. 2168260144Srmacklem */ 2169260144Srmacklem at_root = 1; 2170260144Srmacklem if (new_mp == mp) 2171260144Srmacklem new_mp = nvp->v_mount; 2172260144Srmacklem } 2173191783Srmacklem } 2174191783Srmacklem } else { 2175191783Srmacklem nvp = NULL; 2176191783Srmacklem } 2177191783Srmacklem if (r) { 2178191783Srmacklem if (!NFSISSET_ATTRBIT(&attrbits, 2179191783Srmacklem NFSATTRBIT_RDATTRERROR)) { 2180191783Srmacklem if (nvp != NULL) 2181191783Srmacklem vput(nvp); 2182220645Srmacklem if (needs_unbusy != 0) 2183220645Srmacklem vfs_unbusy(new_mp); 2184191783Srmacklem nd->nd_repstat = r; 2185191783Srmacklem break; 2186191783Srmacklem } 2187191783Srmacklem } 2188191783Srmacklem } 2189191783Srmacklem 2190191783Srmacklem /* 2191191783Srmacklem * Build the directory record xdr 2192191783Srmacklem */ 2193191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 2194191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2195191783Srmacklem *tl++ = newnfs_true; 2196191783Srmacklem *tl++ = 0; 2197191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 2198191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2199191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2200191783Srmacklem *tl++ = 0; 2201191783Srmacklem *tl = txdr_unsigned(*cookiep); 2202191783Srmacklem nfsrv_postopattr(nd, 0, nvap); 2203191783Srmacklem dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1); 2204191783Srmacklem dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 2205191783Srmacklem if (nvp != NULL) 2206191783Srmacklem vput(nvp); 2207191783Srmacklem } else { 2208191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2209191783Srmacklem *tl++ = newnfs_true; 2210191783Srmacklem *tl++ = 0; 2211191783Srmacklem *tl = txdr_unsigned(*cookiep); 2212191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2213220648Srmacklem if (nvp != NULL) { 2214220648Srmacklem supports_nfsv4acls = 2215220648Srmacklem nfs_supportsnfsv4acls(nvp); 2216224082Szack NFSVOPUNLOCK(nvp, 0); 2217220648Srmacklem } else 2218220648Srmacklem supports_nfsv4acls = 0; 2219191783Srmacklem if (refp != NULL) { 2220191783Srmacklem dirlen += nfsrv_putreferralattr(nd, 2221191783Srmacklem &savbits, refp, 0, 2222191783Srmacklem &nd->nd_repstat); 2223191783Srmacklem if (nd->nd_repstat) { 2224191783Srmacklem if (nvp != NULL) 2225191783Srmacklem vrele(nvp); 2226220645Srmacklem if (needs_unbusy != 0) 2227220645Srmacklem vfs_unbusy(new_mp); 2228191783Srmacklem break; 2229191783Srmacklem } 2230191783Srmacklem } else if (r) { 2231220645Srmacklem dirlen += nfsvno_fillattr(nd, new_mp, 2232220645Srmacklem nvp, nvap, &nfh, r, &rderrbits, 2233220648Srmacklem nd->nd_cred, p, isdgram, 0, 2234220648Srmacklem supports_nfsv4acls, at_root, 2235220645Srmacklem mounted_on_fileno); 2236191783Srmacklem } else { 2237220645Srmacklem dirlen += nfsvno_fillattr(nd, new_mp, 2238220645Srmacklem nvp, nvap, &nfh, r, &attrbits, 2239220648Srmacklem nd->nd_cred, p, isdgram, 0, 2240220648Srmacklem supports_nfsv4acls, at_root, 2241220645Srmacklem mounted_on_fileno); 2242191783Srmacklem } 2243191783Srmacklem if (nvp != NULL) 2244191783Srmacklem vrele(nvp); 2245191783Srmacklem dirlen += (3 * NFSX_UNSIGNED); 2246191783Srmacklem } 2247220645Srmacklem if (needs_unbusy != 0) 2248220645Srmacklem vfs_unbusy(new_mp); 2249191783Srmacklem if (dirlen <= cnt) 2250191783Srmacklem entrycnt++; 2251191783Srmacklem } 2252191783Srmacklem cpos += dp->d_reclen; 2253191783Srmacklem dp = (struct dirent *)cpos; 2254191783Srmacklem cookiep++; 2255191783Srmacklem ncookies--; 2256191783Srmacklem } 2257216692Srmacklem vrele(vp); 2258217176Srmacklem vfs_unbusy(mp); 2259191783Srmacklem 2260191783Srmacklem /* 2261191783Srmacklem * If dirlen > cnt, we must strip off the last entry. If that 2262191783Srmacklem * results in an empty reply, report NFSERR_TOOSMALL. 2263191783Srmacklem */ 2264191783Srmacklem if (dirlen > cnt || nd->nd_repstat) { 2265191783Srmacklem if (!nd->nd_repstat && entrycnt == 0) 2266191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 2267269452Srmacklem if (nd->nd_repstat) { 2268191783Srmacklem newnfs_trimtrailing(nd, mb0, bpos0); 2269269452Srmacklem if (nd->nd_flag & ND_NFSV3) 2270269452Srmacklem nfsrv_postopattr(nd, getret, &at); 2271269452Srmacklem } else 2272191783Srmacklem newnfs_trimtrailing(nd, mb1, bpos1); 2273191783Srmacklem eofflag = 0; 2274191783Srmacklem } else if (cpos < cend) 2275191783Srmacklem eofflag = 0; 2276191783Srmacklem if (!nd->nd_repstat) { 2277191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2278191783Srmacklem *tl++ = newnfs_false; 2279191783Srmacklem if (eofflag) 2280191783Srmacklem *tl = newnfs_true; 2281191783Srmacklem else 2282191783Srmacklem *tl = newnfs_false; 2283191783Srmacklem } 2284191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 2285191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 2286224086Szack 2287224086Szackout: 2288224086Szack NFSEXITCODE2(0, nd); 2289191783Srmacklem return (0); 2290191783Srmacklemnfsmout: 2291191783Srmacklem vput(vp); 2292224086Szack NFSEXITCODE2(error, nd); 2293191783Srmacklem return (error); 2294191783Srmacklem} 2295191783Srmacklem 2296191783Srmacklem/* 2297191783Srmacklem * Get the settable attributes out of the mbuf list. 2298191783Srmacklem * (Return 0 or EBADRPC) 2299191783Srmacklem */ 2300191783Srmacklemint 2301191783Srmacklemnfsrv_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2302191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2303191783Srmacklem{ 2304191783Srmacklem u_int32_t *tl; 2305191783Srmacklem struct nfsv2_sattr *sp; 2306191783Srmacklem int error = 0, toclient = 0; 2307191783Srmacklem 2308191783Srmacklem switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 2309191783Srmacklem case ND_NFSV2: 2310191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2311191783Srmacklem /* 2312191783Srmacklem * Some old clients didn't fill in the high order 16bits. 2313191783Srmacklem * --> check the low order 2 bytes for 0xffff 2314191783Srmacklem */ 2315191783Srmacklem if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 2316191783Srmacklem nvap->na_mode = nfstov_mode(sp->sa_mode); 2317191783Srmacklem if (sp->sa_uid != newnfs_xdrneg1) 2318191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 2319191783Srmacklem if (sp->sa_gid != newnfs_xdrneg1) 2320191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 2321191783Srmacklem if (sp->sa_size != newnfs_xdrneg1) 2322191783Srmacklem nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 2323191783Srmacklem if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 2324191783Srmacklem#ifdef notyet 2325191783Srmacklem fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 2326191783Srmacklem#else 2327191783Srmacklem nvap->na_atime.tv_sec = 2328191783Srmacklem fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 2329191783Srmacklem nvap->na_atime.tv_nsec = 0; 2330191783Srmacklem#endif 2331191783Srmacklem } 2332191783Srmacklem if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 2333191783Srmacklem fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 2334191783Srmacklem break; 2335191783Srmacklem case ND_NFSV3: 2336191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2337191783Srmacklem if (*tl == newnfs_true) { 2338191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2339191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2340191783Srmacklem } 2341191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2342191783Srmacklem if (*tl == newnfs_true) { 2343191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2344191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, *tl); 2345191783Srmacklem } 2346191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2347191783Srmacklem if (*tl == newnfs_true) { 2348191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2349191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, *tl); 2350191783Srmacklem } 2351191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2352191783Srmacklem if (*tl == newnfs_true) { 2353191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2354191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2355191783Srmacklem } 2356191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2357191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2358191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2359191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2360191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_atime); 2361191783Srmacklem toclient = 1; 2362191783Srmacklem break; 2363191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2364245611Sjhb vfs_timestamp(&nvap->na_atime); 2365191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2366191783Srmacklem break; 2367191783Srmacklem }; 2368191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2369191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2370191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2371191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2372191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_mtime); 2373191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2374191783Srmacklem break; 2375191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2376245611Sjhb vfs_timestamp(&nvap->na_mtime); 2377191783Srmacklem if (!toclient) 2378191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2379191783Srmacklem break; 2380191783Srmacklem }; 2381191783Srmacklem break; 2382191783Srmacklem case ND_NFSV4: 2383191783Srmacklem error = nfsv4_sattr(nd, nvap, attrbitp, aclp, p); 2384191783Srmacklem }; 2385191783Srmacklemnfsmout: 2386224086Szack NFSEXITCODE2(error, nd); 2387191783Srmacklem return (error); 2388191783Srmacklem} 2389191783Srmacklem 2390191783Srmacklem/* 2391191783Srmacklem * Handle the setable attributes for V4. 2392191783Srmacklem * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 2393191783Srmacklem */ 2394191783Srmacklemint 2395191783Srmacklemnfsv4_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2396191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2397191783Srmacklem{ 2398191783Srmacklem u_int32_t *tl; 2399191783Srmacklem int attrsum = 0; 2400191783Srmacklem int i, j; 2401191783Srmacklem int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 2402191783Srmacklem int toclient = 0; 2403191783Srmacklem u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 2404191783Srmacklem uid_t uid; 2405191783Srmacklem gid_t gid; 2406191783Srmacklem 2407191783Srmacklem error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 2408191783Srmacklem if (error) 2409224086Szack goto nfsmout; 2410191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2411191783Srmacklem attrsize = fxdr_unsigned(int, *tl); 2412191783Srmacklem 2413191783Srmacklem /* 2414191783Srmacklem * Loop around getting the setable attributes. If an unsupported 2415191783Srmacklem * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 2416191783Srmacklem */ 2417191783Srmacklem if (retnotsup) { 2418191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2419191783Srmacklem bitpos = NFSATTRBIT_MAX; 2420191783Srmacklem } else { 2421191783Srmacklem bitpos = 0; 2422191783Srmacklem } 2423191783Srmacklem for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 2424191783Srmacklem if (attrsum > attrsize) { 2425191783Srmacklem error = NFSERR_BADXDR; 2426191783Srmacklem goto nfsmout; 2427191783Srmacklem } 2428191783Srmacklem if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 2429191783Srmacklem switch (bitpos) { 2430191783Srmacklem case NFSATTRBIT_SIZE: 2431191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2432191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2433191783Srmacklem attrsum += NFSX_HYPER; 2434191783Srmacklem break; 2435191783Srmacklem case NFSATTRBIT_ACL: 2436191783Srmacklem error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize, 2437191783Srmacklem p); 2438191783Srmacklem if (error) 2439191783Srmacklem goto nfsmout; 2440191783Srmacklem if (aceerr && !nd->nd_repstat) 2441224077Szack nd->nd_repstat = aceerr; 2442191783Srmacklem attrsum += aclsize; 2443191783Srmacklem break; 2444191783Srmacklem case NFSATTRBIT_ARCHIVE: 2445191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2446191783Srmacklem if (!nd->nd_repstat) 2447191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2448191783Srmacklem attrsum += NFSX_UNSIGNED; 2449191783Srmacklem break; 2450191783Srmacklem case NFSATTRBIT_HIDDEN: 2451191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2452191783Srmacklem if (!nd->nd_repstat) 2453191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2454191783Srmacklem attrsum += NFSX_UNSIGNED; 2455191783Srmacklem break; 2456191783Srmacklem case NFSATTRBIT_MIMETYPE: 2457191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2458191783Srmacklem i = fxdr_unsigned(int, *tl); 2459191783Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 2460191783Srmacklem if (error) 2461191783Srmacklem goto nfsmout; 2462191783Srmacklem if (!nd->nd_repstat) 2463191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2464191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 2465191783Srmacklem break; 2466191783Srmacklem case NFSATTRBIT_MODE: 2467191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2468191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2469191783Srmacklem attrsum += NFSX_UNSIGNED; 2470191783Srmacklem break; 2471191783Srmacklem case NFSATTRBIT_OWNER: 2472191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2473191783Srmacklem j = fxdr_unsigned(int, *tl); 2474224086Szack if (j < 0) { 2475224086Szack error = NFSERR_BADXDR; 2476224086Szack goto nfsmout; 2477224086Szack } 2478191783Srmacklem if (j > NFSV4_SMALLSTR) 2479191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2480191783Srmacklem else 2481191783Srmacklem cp = namestr; 2482191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2483191783Srmacklem if (error) { 2484191783Srmacklem if (j > NFSV4_SMALLSTR) 2485191783Srmacklem free(cp, M_NFSSTRING); 2486224086Szack goto nfsmout; 2487191783Srmacklem } 2488191783Srmacklem if (!nd->nd_repstat) { 2489240720Srmacklem nd->nd_repstat = nfsv4_strtouid(nd, cp, j, &uid, 2490240720Srmacklem p); 2491191783Srmacklem if (!nd->nd_repstat) 2492191783Srmacklem nvap->na_uid = uid; 2493191783Srmacklem } 2494191783Srmacklem if (j > NFSV4_SMALLSTR) 2495191783Srmacklem free(cp, M_NFSSTRING); 2496191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2497191783Srmacklem break; 2498191783Srmacklem case NFSATTRBIT_OWNERGROUP: 2499191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2500191783Srmacklem j = fxdr_unsigned(int, *tl); 2501224086Szack if (j < 0) { 2502224086Szack error = NFSERR_BADXDR; 2503224086Szack goto nfsmout; 2504224086Szack } 2505191783Srmacklem if (j > NFSV4_SMALLSTR) 2506191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2507191783Srmacklem else 2508191783Srmacklem cp = namestr; 2509191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2510191783Srmacklem if (error) { 2511191783Srmacklem if (j > NFSV4_SMALLSTR) 2512191783Srmacklem free(cp, M_NFSSTRING); 2513224086Szack goto nfsmout; 2514191783Srmacklem } 2515191783Srmacklem if (!nd->nd_repstat) { 2516240720Srmacklem nd->nd_repstat = nfsv4_strtogid(nd, cp, j, &gid, 2517240720Srmacklem p); 2518191783Srmacklem if (!nd->nd_repstat) 2519191783Srmacklem nvap->na_gid = gid; 2520191783Srmacklem } 2521191783Srmacklem if (j > NFSV4_SMALLSTR) 2522191783Srmacklem free(cp, M_NFSSTRING); 2523191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2524191783Srmacklem break; 2525191783Srmacklem case NFSATTRBIT_SYSTEM: 2526191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2527191783Srmacklem if (!nd->nd_repstat) 2528191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2529191783Srmacklem attrsum += NFSX_UNSIGNED; 2530191783Srmacklem break; 2531191783Srmacklem case NFSATTRBIT_TIMEACCESSSET: 2532191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2533191783Srmacklem attrsum += NFSX_UNSIGNED; 2534191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2535191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2536191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_atime); 2537191783Srmacklem toclient = 1; 2538191783Srmacklem attrsum += NFSX_V4TIME; 2539191783Srmacklem } else { 2540245611Sjhb vfs_timestamp(&nvap->na_atime); 2541191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2542191783Srmacklem } 2543191783Srmacklem break; 2544191783Srmacklem case NFSATTRBIT_TIMEBACKUP: 2545191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2546191783Srmacklem if (!nd->nd_repstat) 2547191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2548191783Srmacklem attrsum += NFSX_V4TIME; 2549191783Srmacklem break; 2550191783Srmacklem case NFSATTRBIT_TIMECREATE: 2551191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2552191783Srmacklem if (!nd->nd_repstat) 2553191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2554191783Srmacklem attrsum += NFSX_V4TIME; 2555191783Srmacklem break; 2556191783Srmacklem case NFSATTRBIT_TIMEMODIFYSET: 2557191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2558191783Srmacklem attrsum += NFSX_UNSIGNED; 2559191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2560191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2561191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_mtime); 2562191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2563191783Srmacklem attrsum += NFSX_V4TIME; 2564191783Srmacklem } else { 2565245611Sjhb vfs_timestamp(&nvap->na_mtime); 2566191783Srmacklem if (!toclient) 2567191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2568191783Srmacklem } 2569191783Srmacklem break; 2570191783Srmacklem default: 2571191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2572191783Srmacklem /* 2573191783Srmacklem * set bitpos so we drop out of the loop. 2574191783Srmacklem */ 2575191783Srmacklem bitpos = NFSATTRBIT_MAX; 2576191783Srmacklem break; 2577191783Srmacklem }; 2578191783Srmacklem } 2579191783Srmacklem 2580191783Srmacklem /* 2581191783Srmacklem * some clients pad the attrlist, so we need to skip over the 2582191783Srmacklem * padding. 2583191783Srmacklem */ 2584191783Srmacklem if (attrsum > attrsize) { 2585191783Srmacklem error = NFSERR_BADXDR; 2586191783Srmacklem } else { 2587191783Srmacklem attrsize = NFSM_RNDUP(attrsize); 2588191783Srmacklem if (attrsum < attrsize) 2589191783Srmacklem error = nfsm_advance(nd, attrsize - attrsum, -1); 2590191783Srmacklem } 2591191783Srmacklemnfsmout: 2592224086Szack NFSEXITCODE2(error, nd); 2593191783Srmacklem return (error); 2594191783Srmacklem} 2595191783Srmacklem 2596191783Srmacklem/* 2597191783Srmacklem * Check/setup export credentials. 2598191783Srmacklem */ 2599191783Srmacklemint 2600191783Srmacklemnfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 2601191783Srmacklem struct ucred *credanon) 2602191783Srmacklem{ 2603191783Srmacklem int error = 0; 2604191783Srmacklem 2605191783Srmacklem /* 2606191783Srmacklem * Check/setup credentials. 2607191783Srmacklem */ 2608191783Srmacklem if (nd->nd_flag & ND_GSS) 2609192121Srmacklem exp->nes_exflag &= ~MNT_EXPORTANON; 2610191783Srmacklem 2611191783Srmacklem /* 2612192121Srmacklem * Check to see if the operation is allowed for this security flavor. 2613191783Srmacklem * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to 2614191783Srmacklem * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 2615192121Srmacklem * Also, allow Secinfo, so that it can acquire the correct flavor(s). 2616191783Srmacklem */ 2617192121Srmacklem if (nfsvno_testexp(nd, exp) && 2618192121Srmacklem nd->nd_procnum != NFSV4OP_SECINFO && 2619191783Srmacklem nd->nd_procnum != NFSPROC_FSINFO) { 2620191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2621191783Srmacklem error = NFSERR_WRONGSEC; 2622191783Srmacklem else 2623191783Srmacklem error = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2624224086Szack goto out; 2625191783Srmacklem } 2626191783Srmacklem 2627191783Srmacklem /* 2628191783Srmacklem * Check to see if the file system is exported V4 only. 2629191783Srmacklem */ 2630224086Szack if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) { 2631224086Szack error = NFSERR_PROGNOTV4; 2632224086Szack goto out; 2633224086Szack } 2634191783Srmacklem 2635191783Srmacklem /* 2636191783Srmacklem * Now, map the user credentials. 2637191783Srmacklem * (Note that ND_AUTHNONE will only be set for an NFSv3 2638191783Srmacklem * Fsinfo RPC. If set for anything else, this code might need 2639191783Srmacklem * to change.) 2640191783Srmacklem */ 2641191783Srmacklem if (NFSVNO_EXPORTED(exp) && 2642191783Srmacklem ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) || 2643191783Srmacklem NFSVNO_EXPORTANON(exp) || 2644191783Srmacklem (nd->nd_flag & ND_AUTHNONE))) { 2645191783Srmacklem nd->nd_cred->cr_uid = credanon->cr_uid; 2646191783Srmacklem nd->nd_cred->cr_gid = credanon->cr_gid; 2647194498Sbrooks crsetgroups(nd->nd_cred, credanon->cr_ngroups, 2648194498Sbrooks credanon->cr_groups); 2649191783Srmacklem } 2650224086Szack 2651224086Szackout: 2652224086Szack NFSEXITCODE2(error, nd); 2653224086Szack return (error); 2654191783Srmacklem} 2655191783Srmacklem 2656191783Srmacklem/* 2657191783Srmacklem * Check exports. 2658191783Srmacklem */ 2659191783Srmacklemint 2660191783Srmacklemnfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 2661191783Srmacklem struct ucred **credp) 2662191783Srmacklem{ 2663192121Srmacklem int i, error, *secflavors; 2664191783Srmacklem 2665191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2666192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2667192121Srmacklem if (error) { 2668192121Srmacklem if (nfs_rootfhset) { 2669192121Srmacklem exp->nes_exflag = 0; 2670192121Srmacklem exp->nes_numsecflavor = 0; 2671192121Srmacklem error = 0; 2672192121Srmacklem } 2673192121Srmacklem } else { 2674192121Srmacklem /* Copy the security flavors. */ 2675192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2676192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2677191783Srmacklem } 2678224086Szack NFSEXITCODE(error); 2679191783Srmacklem return (error); 2680191783Srmacklem} 2681191783Srmacklem 2682191783Srmacklem/* 2683191783Srmacklem * Get a vnode for a file handle and export stuff. 2684191783Srmacklem */ 2685191783Srmacklemint 2686191783Srmacklemnfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 2687216700Srmacklem int lktype, struct vnode **vpp, struct nfsexstuff *exp, 2688216700Srmacklem struct ucred **credp) 2689191783Srmacklem{ 2690192121Srmacklem int i, error, *secflavors; 2691191783Srmacklem 2692191998Srmacklem *credp = NULL; 2693192121Srmacklem exp->nes_numsecflavor = 0; 2694241896Skib error = VFS_FHTOVP(mp, &fhp->fh_fid, lktype, vpp); 2695205663Srmacklem if (error != 0) 2696205663Srmacklem /* Make sure the server replies ESTALE to the client. */ 2697205663Srmacklem error = ESTALE; 2698191783Srmacklem if (nam && !error) { 2699191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2700192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2701191783Srmacklem if (error) { 2702191783Srmacklem if (nfs_rootfhset) { 2703191783Srmacklem exp->nes_exflag = 0; 2704192121Srmacklem exp->nes_numsecflavor = 0; 2705191783Srmacklem error = 0; 2706191783Srmacklem } else { 2707191783Srmacklem vput(*vpp); 2708191783Srmacklem } 2709192121Srmacklem } else { 2710192121Srmacklem /* Copy the security flavors. */ 2711192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2712192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2713191783Srmacklem } 2714191783Srmacklem } 2715224086Szack NFSEXITCODE(error); 2716191783Srmacklem return (error); 2717191783Srmacklem} 2718191783Srmacklem 2719191783Srmacklem/* 2720191783Srmacklem * nfsd_fhtovp() - convert a fh to a vnode ptr 2721191783Srmacklem * - look up fsid in mount list (if not found ret error) 2722191783Srmacklem * - get vp and export rights by calling nfsvno_fhtovp() 2723191783Srmacklem * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2724191783Srmacklem * for AUTH_SYS 2725217063Srmacklem * - if mpp != NULL, return the mount point so that it can 2726217063Srmacklem * be used for vn_finished_write() by the caller 2727191783Srmacklem */ 2728191783Srmacklemvoid 2729216700Srmacklemnfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype, 2730191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, 2731191783Srmacklem struct mount **mpp, int startwrite, struct thread *p) 2732191783Srmacklem{ 2733191783Srmacklem struct mount *mp; 2734191783Srmacklem struct ucred *credanon; 2735191783Srmacklem fhandle_t *fhp; 2736191783Srmacklem 2737191783Srmacklem fhp = (fhandle_t *)nfp->nfsrvfh_data; 2738191783Srmacklem /* 2739191783Srmacklem * Check for the special case of the nfsv4root_fh. 2740191783Srmacklem */ 2741217017Srmacklem mp = vfs_busyfs(&fhp->fh_fsid); 2742217063Srmacklem if (mpp != NULL) 2743217063Srmacklem *mpp = mp; 2744217017Srmacklem if (mp == NULL) { 2745191783Srmacklem *vpp = NULL; 2746191783Srmacklem nd->nd_repstat = ESTALE; 2747224086Szack goto out; 2748191783Srmacklem } 2749191783Srmacklem 2750249592Sken if (startwrite) { 2751191783Srmacklem vn_start_write(NULL, mpp, V_WAIT); 2752249592Sken if (lktype == LK_SHARED && !(MNT_SHARED_WRITES(mp))) 2753249592Sken lktype = LK_EXCLUSIVE; 2754249592Sken } 2755216700Srmacklem nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp, 2756191783Srmacklem &credanon); 2757217017Srmacklem vfs_unbusy(mp); 2758191783Srmacklem 2759191783Srmacklem /* 2760191783Srmacklem * For NFSv4 without a pseudo root fs, unexported file handles 2761191783Srmacklem * can be returned, so that Lookup works everywhere. 2762191783Srmacklem */ 2763191783Srmacklem if (!nd->nd_repstat && exp->nes_exflag == 0 && 2764191783Srmacklem !(nd->nd_flag & ND_NFSV4)) { 2765191783Srmacklem vput(*vpp); 2766191783Srmacklem nd->nd_repstat = EACCES; 2767191783Srmacklem } 2768191783Srmacklem 2769191783Srmacklem /* 2770191783Srmacklem * Personally, I've never seen any point in requiring a 2771191783Srmacklem * reserved port#, since only in the rare case where the 2772191783Srmacklem * clients are all boxes with secure system priviledges, 2773191783Srmacklem * does it provide any enhanced security, but... some people 2774191783Srmacklem * believe it to be useful and keep putting this code back in. 2775191783Srmacklem * (There is also some "security checker" out there that 2776191783Srmacklem * complains if the nfs server doesn't enforce this.) 2777191783Srmacklem * However, note the following: 2778191783Srmacklem * RFC3530 (NFSv4) specifies that a reserved port# not be 2779191783Srmacklem * required. 2780191783Srmacklem * RFC2623 recommends that, if a reserved port# is checked for, 2781191783Srmacklem * that there be a way to turn that off--> ifdef'd. 2782191783Srmacklem */ 2783191783Srmacklem#ifdef NFS_REQRSVPORT 2784191783Srmacklem if (!nd->nd_repstat) { 2785192121Srmacklem struct sockaddr_in *saddr; 2786192121Srmacklem struct sockaddr_in6 *saddr6; 2787192121Srmacklem 2788192121Srmacklem saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 2789192121Srmacklem saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 2790192121Srmacklem if (!(nd->nd_flag & ND_NFSV4) && 2791192121Srmacklem ((saddr->sin_family == AF_INET && 2792192121Srmacklem ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 2793192121Srmacklem (saddr6->sin6_family == AF_INET6 && 2794192121Srmacklem ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 2795192121Srmacklem vput(*vpp); 2796192121Srmacklem nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2797192121Srmacklem } 2798191783Srmacklem } 2799191783Srmacklem#endif /* NFS_REQRSVPORT */ 2800191783Srmacklem 2801191783Srmacklem /* 2802191783Srmacklem * Check/setup credentials. 2803191783Srmacklem */ 2804191783Srmacklem if (!nd->nd_repstat) { 2805191783Srmacklem nd->nd_saveduid = nd->nd_cred->cr_uid; 2806191783Srmacklem nd->nd_repstat = nfsd_excred(nd, exp, credanon); 2807191783Srmacklem if (nd->nd_repstat) 2808191783Srmacklem vput(*vpp); 2809191783Srmacklem } 2810191940Skan if (credanon != NULL) 2811191940Skan crfree(credanon); 2812191783Srmacklem if (nd->nd_repstat) { 2813191783Srmacklem if (startwrite) 2814191783Srmacklem vn_finished_write(mp); 2815191783Srmacklem *vpp = NULL; 2816217063Srmacklem if (mpp != NULL) 2817217063Srmacklem *mpp = NULL; 2818191783Srmacklem } 2819224086Szack 2820224086Szackout: 2821224086Szack NFSEXITCODE2(0, nd); 2822191783Srmacklem} 2823191783Srmacklem 2824191783Srmacklem/* 2825191783Srmacklem * glue for fp. 2826191783Srmacklem */ 2827247602Spjdstatic int 2828191783Srmacklemfp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 2829191783Srmacklem{ 2830191783Srmacklem struct filedesc *fdp; 2831191783Srmacklem struct file *fp; 2832224086Szack int error = 0; 2833191783Srmacklem 2834191783Srmacklem fdp = p->td_proc->p_fd; 2835247602Spjd if (fd < 0 || fd >= fdp->fd_nfiles || 2836247602Spjd (fp = fdp->fd_ofiles[fd].fde_file) == NULL) { 2837224086Szack error = EBADF; 2838224086Szack goto out; 2839224086Szack } 2840191783Srmacklem *fpp = fp; 2841224086Szack 2842224086Szackout: 2843224086Szack NFSEXITCODE(error); 2844224086Szack return (error); 2845191783Srmacklem} 2846191783Srmacklem 2847191783Srmacklem/* 2848192121Srmacklem * Called from nfssvc() to update the exports list. Just call 2849191783Srmacklem * vfs_export(). This has to be done, since the v4 root fake fs isn't 2850191783Srmacklem * in the mount list. 2851191783Srmacklem */ 2852191783Srmacklemint 2853191783Srmacklemnfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 2854191783Srmacklem{ 2855191783Srmacklem struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 2856224086Szack int error = 0; 2857191783Srmacklem struct nameidata nd; 2858191783Srmacklem fhandle_t fh; 2859191783Srmacklem 2860191783Srmacklem error = vfs_export(&nfsv4root_mnt, &nfsexargp->export); 2861216894Srmacklem if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0) 2862191783Srmacklem nfs_rootfhset = 0; 2863216894Srmacklem else if (error == 0) { 2864224086Szack if (nfsexargp->fspec == NULL) { 2865224086Szack error = EPERM; 2866224086Szack goto out; 2867224086Szack } 2868191783Srmacklem /* 2869191783Srmacklem * If fspec != NULL, this is the v4root path. 2870191783Srmacklem */ 2871241896Skib NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, 2872191783Srmacklem nfsexargp->fspec, p); 2873191783Srmacklem if ((error = namei(&nd)) != 0) 2874224086Szack goto out; 2875191783Srmacklem error = nfsvno_getfh(nd.ni_vp, &fh, p); 2876191783Srmacklem vrele(nd.ni_vp); 2877191783Srmacklem if (!error) { 2878191783Srmacklem nfs_rootfh.nfsrvfh_len = NFSX_MYFH; 2879191783Srmacklem NFSBCOPY((caddr_t)&fh, 2880191783Srmacklem nfs_rootfh.nfsrvfh_data, 2881191783Srmacklem sizeof (fhandle_t)); 2882191783Srmacklem nfs_rootfhset = 1; 2883191783Srmacklem } 2884191783Srmacklem } 2885224086Szack 2886224086Szackout: 2887224086Szack NFSEXITCODE(error); 2888191783Srmacklem return (error); 2889191783Srmacklem} 2890191783Srmacklem 2891191783Srmacklem/* 2892191783Srmacklem * This function needs to test to see if the system is near its limit 2893191783Srmacklem * for memory allocation via malloc() or mget() and return True iff 2894191783Srmacklem * either of these resources are near their limit. 2895191783Srmacklem * XXX (For now, this is just a stub.) 2896191783Srmacklem */ 2897191783Srmacklemint nfsrv_testmalloclimit = 0; 2898191783Srmacklemint 2899191783Srmacklemnfsrv_mallocmget_limit(void) 2900191783Srmacklem{ 2901191783Srmacklem static int printmesg = 0; 2902191783Srmacklem static int testval = 1; 2903191783Srmacklem 2904191783Srmacklem if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 2905191783Srmacklem if ((printmesg++ % 100) == 0) 2906191783Srmacklem printf("nfsd: malloc/mget near limit\n"); 2907191783Srmacklem return (1); 2908191783Srmacklem } 2909191783Srmacklem return (0); 2910191783Srmacklem} 2911191783Srmacklem 2912191783Srmacklem/* 2913191783Srmacklem * BSD specific initialization of a mount point. 2914191783Srmacklem */ 2915191783Srmacklemvoid 2916191783Srmacklemnfsd_mntinit(void) 2917191783Srmacklem{ 2918191783Srmacklem static int inited = 0; 2919191783Srmacklem 2920191783Srmacklem if (inited) 2921191783Srmacklem return; 2922191783Srmacklem inited = 1; 2923191783Srmacklem nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 2924191783Srmacklem TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist); 2925234482Smckusick TAILQ_INIT(&nfsv4root_mnt.mnt_activevnodelist); 2926191783Srmacklem nfsv4root_mnt.mnt_export = NULL; 2927191783Srmacklem TAILQ_INIT(&nfsv4root_opt); 2928191783Srmacklem TAILQ_INIT(&nfsv4root_newopt); 2929191783Srmacklem nfsv4root_mnt.mnt_opt = &nfsv4root_opt; 2930191783Srmacklem nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt; 2931191783Srmacklem nfsv4root_mnt.mnt_nvnodelistsize = 0; 2932234482Smckusick nfsv4root_mnt.mnt_activevnodelistsize = 0; 2933191783Srmacklem} 2934191783Srmacklem 2935191783Srmacklem/* 2936191783Srmacklem * Get a vnode for a file handle, without checking exports, etc. 2937191783Srmacklem */ 2938191783Srmacklemstruct vnode * 2939191783Srmacklemnfsvno_getvp(fhandle_t *fhp) 2940191783Srmacklem{ 2941191783Srmacklem struct mount *mp; 2942191783Srmacklem struct vnode *vp; 2943191783Srmacklem int error; 2944191783Srmacklem 2945217017Srmacklem mp = vfs_busyfs(&fhp->fh_fsid); 2946191783Srmacklem if (mp == NULL) 2947191783Srmacklem return (NULL); 2948222167Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp); 2949217017Srmacklem vfs_unbusy(mp); 2950191783Srmacklem if (error) 2951191783Srmacklem return (NULL); 2952191783Srmacklem return (vp); 2953191783Srmacklem} 2954191783Srmacklem 2955191783Srmacklem/* 2956191783Srmacklem * Do a local VOP_ADVLOCK(). 2957191783Srmacklem */ 2958191783Srmacklemint 2959191783Srmacklemnfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 2960192256Srmacklem u_int64_t end, struct thread *td) 2961191783Srmacklem{ 2962224086Szack int error = 0; 2963191783Srmacklem struct flock fl; 2964191783Srmacklem u_int64_t tlen; 2965191783Srmacklem 2966212833Srmacklem if (nfsrv_dolocallocks == 0) 2967224086Szack goto out; 2968216893Srmacklem 2969216893Srmacklem /* Check for VI_DOOMED here, so that VOP_ADVLOCK() isn't performed. */ 2970224086Szack if ((vp->v_iflag & VI_DOOMED) != 0) { 2971224086Szack error = EPERM; 2972224086Szack goto out; 2973224086Szack } 2974216893Srmacklem 2975191783Srmacklem fl.l_whence = SEEK_SET; 2976191783Srmacklem fl.l_type = ftype; 2977191783Srmacklem fl.l_start = (off_t)first; 2978191783Srmacklem if (end == NFS64BITSSET) { 2979191783Srmacklem fl.l_len = 0; 2980191783Srmacklem } else { 2981191783Srmacklem tlen = end - first; 2982191783Srmacklem fl.l_len = (off_t)tlen; 2983191783Srmacklem } 2984191783Srmacklem /* 2985192256Srmacklem * For FreeBSD8, the l_pid and l_sysid must be set to the same 2986192256Srmacklem * values for all calls, so that all locks will be held by the 2987192256Srmacklem * nfsd server. (The nfsd server handles conflicts between the 2988192256Srmacklem * various clients.) 2989192256Srmacklem * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 2990192256Srmacklem * bytes, so it can't be put in l_sysid. 2991191783Srmacklem */ 2992192503Srmacklem if (nfsv4_sysid == 0) 2993192503Srmacklem nfsv4_sysid = nlm_acquire_next_sysid(); 2994192256Srmacklem fl.l_pid = (pid_t)0; 2995192503Srmacklem fl.l_sysid = (int)nfsv4_sysid; 2996192256Srmacklem 2997224080Szack NFSVOPUNLOCK(vp, 0); 2998212833Srmacklem if (ftype == F_UNLCK) 2999212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, 3000212833Srmacklem (F_POSIX | F_REMOTE)); 3001212833Srmacklem else 3002212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 3003212833Srmacklem (F_POSIX | F_REMOTE)); 3004224080Szack NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY); 3005224086Szack 3006224086Szackout: 3007224086Szack NFSEXITCODE(error); 3008191783Srmacklem return (error); 3009191783Srmacklem} 3010191783Srmacklem 3011191783Srmacklem/* 3012191783Srmacklem * Check the nfsv4 root exports. 3013191783Srmacklem */ 3014191783Srmacklemint 3015191783Srmacklemnfsvno_v4rootexport(struct nfsrv_descript *nd) 3016191783Srmacklem{ 3017191783Srmacklem struct ucred *credanon; 3018224086Szack int exflags, error = 0, numsecflavor, *secflavors, i; 3019191783Srmacklem 3020191783Srmacklem error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags, 3021192121Srmacklem &credanon, &numsecflavor, &secflavors); 3022224086Szack if (error) { 3023224086Szack error = NFSERR_PROGUNAVAIL; 3024224086Szack goto out; 3025224086Szack } 3026191940Skan if (credanon != NULL) 3027191940Skan crfree(credanon); 3028192121Srmacklem for (i = 0; i < numsecflavor; i++) { 3029192121Srmacklem if (secflavors[i] == AUTH_SYS) 3030192121Srmacklem nd->nd_flag |= ND_EXAUTHSYS; 3031192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5) 3032192121Srmacklem nd->nd_flag |= ND_EXGSS; 3033192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5I) 3034192121Srmacklem nd->nd_flag |= ND_EXGSSINTEGRITY; 3035192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5P) 3036192121Srmacklem nd->nd_flag |= ND_EXGSSPRIVACY; 3037192121Srmacklem } 3038224086Szack 3039224086Szackout: 3040224086Szack NFSEXITCODE(error); 3041224086Szack return (error); 3042191783Srmacklem} 3043191783Srmacklem 3044191783Srmacklem/* 3045191783Srmacklem * Nfs server psuedo system call for the nfsd's 3046191783Srmacklem */ 3047191783Srmacklem/* 3048191783Srmacklem * MPSAFE 3049191783Srmacklem */ 3050191783Srmacklemstatic int 3051191783Srmacklemnfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 3052191783Srmacklem{ 3053191783Srmacklem struct file *fp; 3054192017Srmacklem struct nfsd_addsock_args sockarg; 3055192017Srmacklem struct nfsd_nfsd_args nfsdarg; 3056255219Spjd cap_rights_t rights; 3057191783Srmacklem int error; 3058191783Srmacklem 3059191783Srmacklem if (uap->flag & NFSSVC_NFSDADDSOCK) { 3060192017Srmacklem error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 3061191783Srmacklem if (error) 3062224086Szack goto out; 3063224778Srwatson /* 3064224778Srwatson * Since we don't know what rights might be required, 3065224778Srwatson * pretend that we need them all. It is better to be too 3066224778Srwatson * careful than too reckless. 3067224778Srwatson */ 3068255219Spjd error = fget(td, sockarg.sock, 3069255219Spjd cap_rights_init(&rights, CAP_SOCK_SERVER), &fp); 3070255219Spjd if (error != 0) 3071224086Szack goto out; 3072191783Srmacklem if (fp->f_type != DTYPE_SOCKET) { 3073191783Srmacklem fdrop(fp, td); 3074224086Szack error = EPERM; 3075224086Szack goto out; 3076191783Srmacklem } 3077191783Srmacklem error = nfsrvd_addsock(fp); 3078191783Srmacklem fdrop(fp, td); 3079191783Srmacklem } else if (uap->flag & NFSSVC_NFSDNFSD) { 3080224086Szack if (uap->argp == NULL) { 3081224086Szack error = EINVAL; 3082224086Szack goto out; 3083224086Szack } 3084192017Srmacklem error = copyin(uap->argp, (caddr_t)&nfsdarg, 3085192017Srmacklem sizeof (nfsdarg)); 3086192017Srmacklem if (error) 3087224086Szack goto out; 3088192017Srmacklem error = nfsrvd_nfsd(td, &nfsdarg); 3089191783Srmacklem } else { 3090191783Srmacklem error = nfssvc_srvcall(td, uap, td->td_ucred); 3091191783Srmacklem } 3092224086Szack 3093224086Szackout: 3094224086Szack NFSEXITCODE(error); 3095191783Srmacklem return (error); 3096191783Srmacklem} 3097191783Srmacklem 3098191783Srmacklemstatic int 3099191783Srmacklemnfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 3100191783Srmacklem{ 3101191783Srmacklem struct nfsex_args export; 3102191783Srmacklem struct file *fp = NULL; 3103191783Srmacklem int stablefd, len; 3104191783Srmacklem struct nfsd_clid adminrevoke; 3105191783Srmacklem struct nfsd_dumplist dumplist; 3106191783Srmacklem struct nfsd_dumpclients *dumpclients; 3107191783Srmacklem struct nfsd_dumplocklist dumplocklist; 3108191783Srmacklem struct nfsd_dumplocks *dumplocks; 3109191783Srmacklem struct nameidata nd; 3110191783Srmacklem vnode_t vp; 3111241561Srmacklem int error = EINVAL, igotlock; 3112217432Srmacklem struct proc *procp; 3113241561Srmacklem static int suspend_nfsd = 0; 3114191783Srmacklem 3115191783Srmacklem if (uap->flag & NFSSVC_PUBLICFH) { 3116191783Srmacklem NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 3117191783Srmacklem sizeof (fhandle_t)); 3118191783Srmacklem error = copyin(uap->argp, 3119191783Srmacklem &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 3120191783Srmacklem if (!error) 3121191783Srmacklem nfs_pubfhset = 1; 3122191783Srmacklem } else if (uap->flag & NFSSVC_V4ROOTEXPORT) { 3123191783Srmacklem error = copyin(uap->argp,(caddr_t)&export, 3124191783Srmacklem sizeof (struct nfsex_args)); 3125191783Srmacklem if (!error) 3126191783Srmacklem error = nfsrv_v4rootexport(&export, cred, p); 3127191783Srmacklem } else if (uap->flag & NFSSVC_NOPUBLICFH) { 3128191783Srmacklem nfs_pubfhset = 0; 3129191783Srmacklem error = 0; 3130191783Srmacklem } else if (uap->flag & NFSSVC_STABLERESTART) { 3131191783Srmacklem error = copyin(uap->argp, (caddr_t)&stablefd, 3132191783Srmacklem sizeof (int)); 3133191783Srmacklem if (!error) 3134191783Srmacklem error = fp_getfvp(p, stablefd, &fp, &vp); 3135191783Srmacklem if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 3136191783Srmacklem error = EBADF; 3137191783Srmacklem if (!error && newnfs_numnfsd != 0) 3138191783Srmacklem error = EPERM; 3139191783Srmacklem if (!error) { 3140191783Srmacklem nfsrv_stablefirst.nsf_fp = fp; 3141191783Srmacklem nfsrv_setupstable(p); 3142191783Srmacklem } 3143191783Srmacklem } else if (uap->flag & NFSSVC_ADMINREVOKE) { 3144191783Srmacklem error = copyin(uap->argp, (caddr_t)&adminrevoke, 3145191783Srmacklem sizeof (struct nfsd_clid)); 3146191783Srmacklem if (!error) 3147191783Srmacklem error = nfsrv_adminrevoke(&adminrevoke, p); 3148191783Srmacklem } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 3149191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplist, 3150191783Srmacklem sizeof (struct nfsd_dumplist)); 3151191783Srmacklem if (!error && (dumplist.ndl_size < 1 || 3152191783Srmacklem dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 3153191783Srmacklem error = EPERM; 3154191783Srmacklem if (!error) { 3155191783Srmacklem len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 3156191783Srmacklem dumpclients = (struct nfsd_dumpclients *)malloc(len, 3157191783Srmacklem M_TEMP, M_WAITOK); 3158191783Srmacklem nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 3159191783Srmacklem error = copyout(dumpclients, 3160191783Srmacklem CAST_USER_ADDR_T(dumplist.ndl_list), len); 3161191783Srmacklem free((caddr_t)dumpclients, M_TEMP); 3162191783Srmacklem } 3163191783Srmacklem } else if (uap->flag & NFSSVC_DUMPLOCKS) { 3164191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplocklist, 3165191783Srmacklem sizeof (struct nfsd_dumplocklist)); 3166191783Srmacklem if (!error && (dumplocklist.ndllck_size < 1 || 3167191783Srmacklem dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 3168191783Srmacklem error = EPERM; 3169191783Srmacklem if (!error) 3170191783Srmacklem error = nfsrv_lookupfilename(&nd, 3171191783Srmacklem dumplocklist.ndllck_fname, p); 3172191783Srmacklem if (!error) { 3173191783Srmacklem len = sizeof (struct nfsd_dumplocks) * 3174191783Srmacklem dumplocklist.ndllck_size; 3175191783Srmacklem dumplocks = (struct nfsd_dumplocks *)malloc(len, 3176191783Srmacklem M_TEMP, M_WAITOK); 3177191783Srmacklem nfsrv_dumplocks(nd.ni_vp, dumplocks, 3178191783Srmacklem dumplocklist.ndllck_size, p); 3179191783Srmacklem vput(nd.ni_vp); 3180191783Srmacklem error = copyout(dumplocks, 3181191783Srmacklem CAST_USER_ADDR_T(dumplocklist.ndllck_list), len); 3182191783Srmacklem free((caddr_t)dumplocks, M_TEMP); 3183191783Srmacklem } 3184217432Srmacklem } else if (uap->flag & NFSSVC_BACKUPSTABLE) { 3185217432Srmacklem procp = p->td_proc; 3186217432Srmacklem PROC_LOCK(procp); 3187217432Srmacklem nfsd_master_pid = procp->p_pid; 3188217432Srmacklem bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1); 3189217432Srmacklem nfsd_master_start = procp->p_stats->p_start; 3190217432Srmacklem nfsd_master_proc = procp; 3191217432Srmacklem PROC_UNLOCK(procp); 3192241561Srmacklem } else if ((uap->flag & NFSSVC_SUSPENDNFSD) != 0) { 3193241561Srmacklem NFSLOCKV4ROOTMUTEX(); 3194241561Srmacklem if (suspend_nfsd == 0) { 3195241561Srmacklem /* Lock out all nfsd threads */ 3196241561Srmacklem do { 3197241561Srmacklem igotlock = nfsv4_lock(&nfsd_suspend_lock, 1, 3198241561Srmacklem NULL, NFSV4ROOTLOCKMUTEXPTR, NULL); 3199241561Srmacklem } while (igotlock == 0 && suspend_nfsd == 0); 3200241561Srmacklem suspend_nfsd = 1; 3201241561Srmacklem } 3202241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 3203241561Srmacklem error = 0; 3204241561Srmacklem } else if ((uap->flag & NFSSVC_RESUMENFSD) != 0) { 3205241561Srmacklem NFSLOCKV4ROOTMUTEX(); 3206241561Srmacklem if (suspend_nfsd != 0) { 3207241561Srmacklem nfsv4_unlock(&nfsd_suspend_lock, 0); 3208241561Srmacklem suspend_nfsd = 0; 3209241561Srmacklem } 3210241561Srmacklem NFSUNLOCKV4ROOTMUTEX(); 3211241561Srmacklem error = 0; 3212191783Srmacklem } 3213224086Szack 3214224086Szack NFSEXITCODE(error); 3215191783Srmacklem return (error); 3216191783Srmacklem} 3217191783Srmacklem 3218192121Srmacklem/* 3219192121Srmacklem * Check exports. 3220192121Srmacklem * Returns 0 if ok, 1 otherwise. 3221192121Srmacklem */ 3222192121Srmacklemint 3223192121Srmacklemnfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 3224192121Srmacklem{ 3225192121Srmacklem int i; 3226192121Srmacklem 3227192121Srmacklem /* 3228192121Srmacklem * This seems odd, but allow the case where the security flavor 3229192121Srmacklem * list is empty. This happens when NFSv4 is traversing non-exported 3230192121Srmacklem * file systems. Exported file systems should always have a non-empty 3231192121Srmacklem * security flavor list. 3232192121Srmacklem */ 3233192121Srmacklem if (exp->nes_numsecflavor == 0) 3234192121Srmacklem return (0); 3235192121Srmacklem 3236192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) { 3237192121Srmacklem /* 3238192121Srmacklem * The tests for privacy and integrity must be first, 3239192121Srmacklem * since ND_GSS is set for everything but AUTH_SYS. 3240192121Srmacklem */ 3241192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 3242192121Srmacklem (nd->nd_flag & ND_GSSPRIVACY)) 3243192121Srmacklem return (0); 3244192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 3245192121Srmacklem (nd->nd_flag & ND_GSSINTEGRITY)) 3246192121Srmacklem return (0); 3247192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 3248192121Srmacklem (nd->nd_flag & ND_GSS)) 3249192121Srmacklem return (0); 3250192121Srmacklem if (exp->nes_secflavors[i] == AUTH_SYS && 3251192121Srmacklem (nd->nd_flag & ND_GSS) == 0) 3252192121Srmacklem return (0); 3253192121Srmacklem } 3254192121Srmacklem return (1); 3255192121Srmacklem} 3256192121Srmacklem 3257214224Srmacklem/* 3258214224Srmacklem * Calculate a hash value for the fid in a file handle. 3259214224Srmacklem */ 3260214255Srmacklemuint32_t 3261214224Srmacklemnfsrv_hashfh(fhandle_t *fhp) 3262214224Srmacklem{ 3263214255Srmacklem uint32_t hashval; 3264214224Srmacklem 3265214255Srmacklem hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0); 3266214224Srmacklem return (hashval); 3267214224Srmacklem} 3268214224Srmacklem 3269217432Srmacklem/* 3270269398Srmacklem * Calculate a hash value for the sessionid. 3271269398Srmacklem */ 3272269398Srmacklemuint32_t 3273269398Srmacklemnfsrv_hashsessionid(uint8_t *sessionid) 3274269398Srmacklem{ 3275269398Srmacklem uint32_t hashval; 3276269398Srmacklem 3277269398Srmacklem hashval = hash32_buf(sessionid, NFSX_V4SESSIONID, 0); 3278269398Srmacklem return (hashval); 3279269398Srmacklem} 3280269398Srmacklem 3281269398Srmacklem/* 3282217432Srmacklem * Signal the userland master nfsd to backup the stable restart file. 3283217432Srmacklem */ 3284217432Srmacklemvoid 3285217432Srmacklemnfsrv_backupstable(void) 3286217432Srmacklem{ 3287217432Srmacklem struct proc *procp; 3288217432Srmacklem 3289217432Srmacklem if (nfsd_master_proc != NULL) { 3290217432Srmacklem procp = pfind(nfsd_master_pid); 3291217432Srmacklem /* Try to make sure it is the correct process. */ 3292217432Srmacklem if (procp == nfsd_master_proc && 3293217432Srmacklem procp->p_stats->p_start.tv_sec == 3294217432Srmacklem nfsd_master_start.tv_sec && 3295217432Srmacklem procp->p_stats->p_start.tv_usec == 3296217432Srmacklem nfsd_master_start.tv_usec && 3297217432Srmacklem strcmp(procp->p_comm, nfsd_master_comm) == 0) 3298225617Skmacy kern_psignal(procp, SIGUSR2); 3299217432Srmacklem else 3300217432Srmacklem nfsd_master_proc = NULL; 3301217432Srmacklem 3302217432Srmacklem if (procp != NULL) 3303217432Srmacklem PROC_UNLOCK(procp); 3304217432Srmacklem } 3305217432Srmacklem} 3306217432Srmacklem 3307191783Srmacklemextern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 3308191783Srmacklem 3309191783Srmacklem/* 3310191783Srmacklem * Called once to initialize data structures... 3311191783Srmacklem */ 3312191783Srmacklemstatic int 3313191783Srmacklemnfsd_modevent(module_t mod, int type, void *data) 3314191783Srmacklem{ 3315254337Srmacklem int error = 0, i; 3316191783Srmacklem static int loaded = 0; 3317191783Srmacklem 3318191783Srmacklem switch (type) { 3319191783Srmacklem case MOD_LOAD: 3320191783Srmacklem if (loaded) 3321224086Szack goto out; 3322191783Srmacklem newnfs_portinit(); 3323254337Srmacklem for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) { 3324269655Skib mtx_init(&nfsrchash_table[i].mtx, "nfsrtc", NULL, 3325269655Skib MTX_DEF); 3326269655Skib mtx_init(&nfsrcahash_table[i].mtx, "nfsrtca", NULL, 3327269655Skib MTX_DEF); 3328254337Srmacklem } 3329269655Skib mtx_init(&nfsrc_udpmtx, "nfsuc", NULL, MTX_DEF); 3330269655Skib mtx_init(&nfs_v4root_mutex, "nfs4rt", NULL, MTX_DEF); 3331269655Skib mtx_init(&nfsv4root_mnt.mnt_mtx, "nfs4mnt", NULL, MTX_DEF); 3332269398Srmacklem for (i = 0; i < NFSSESSIONHASHSIZE; i++) 3333269655Skib mtx_init(&nfssessionhash[i].mtx, "nfssm", 3334269398Srmacklem NULL, MTX_DEF); 3335191783Srmacklem lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0); 3336191783Srmacklem nfsrvd_initcache(); 3337191783Srmacklem nfsd_init(); 3338191783Srmacklem NFSD_LOCK(); 3339191783Srmacklem nfsrvd_init(0); 3340191783Srmacklem NFSD_UNLOCK(); 3341191783Srmacklem nfsd_mntinit(); 3342191783Srmacklem#ifdef VV_DISABLEDELEG 3343191783Srmacklem vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 3344191783Srmacklem vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 3345191783Srmacklem#endif 3346191783Srmacklem nfsd_call_servertimer = nfsrv_servertimer; 3347191783Srmacklem nfsd_call_nfsd = nfssvc_nfsd; 3348191783Srmacklem loaded = 1; 3349191783Srmacklem break; 3350191783Srmacklem 3351191783Srmacklem case MOD_UNLOAD: 3352191783Srmacklem if (newnfs_numnfsd != 0) { 3353191783Srmacklem error = EBUSY; 3354191783Srmacklem break; 3355191783Srmacklem } 3356191783Srmacklem 3357191783Srmacklem#ifdef VV_DISABLEDELEG 3358191783Srmacklem vn_deleg_ops.vndeleg_recall = NULL; 3359191783Srmacklem vn_deleg_ops.vndeleg_disable = NULL; 3360191783Srmacklem#endif 3361191783Srmacklem nfsd_call_servertimer = NULL; 3362191783Srmacklem nfsd_call_nfsd = NULL; 3363217335Szack 3364220530Srmacklem /* Clean out all NFSv4 state. */ 3365220530Srmacklem nfsrv_throwawayallstate(curthread); 3366220530Srmacklem 3367217335Szack /* Clean the NFS server reply cache */ 3368217335Szack nfsrvd_cleancache(); 3369217335Szack 3370220530Srmacklem /* Free up the krpc server pool. */ 3371220530Srmacklem if (nfsrvd_pool != NULL) 3372220530Srmacklem svcpool_destroy(nfsrvd_pool); 3373220530Srmacklem 3374191783Srmacklem /* and get rid of the locks */ 3375261055Smav for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) { 3376254337Srmacklem mtx_destroy(&nfsrchash_table[i].mtx); 3377261055Smav mtx_destroy(&nfsrcahash_table[i].mtx); 3378261055Smav } 3379254337Srmacklem mtx_destroy(&nfsrc_udpmtx); 3380191783Srmacklem mtx_destroy(&nfs_v4root_mutex); 3381191783Srmacklem mtx_destroy(&nfsv4root_mnt.mnt_mtx); 3382269398Srmacklem for (i = 0; i < NFSSESSIONHASHSIZE; i++) 3383269398Srmacklem mtx_destroy(&nfssessionhash[i].mtx); 3384191783Srmacklem lockdestroy(&nfsv4root_mnt.mnt_explock); 3385191783Srmacklem loaded = 0; 3386191783Srmacklem break; 3387191783Srmacklem default: 3388191783Srmacklem error = EOPNOTSUPP; 3389191783Srmacklem break; 3390191783Srmacklem } 3391224086Szack 3392224086Szackout: 3393224086Szack NFSEXITCODE(error); 3394224086Szack return (error); 3395191783Srmacklem} 3396191783Srmacklemstatic moduledata_t nfsd_mod = { 3397191783Srmacklem "nfsd", 3398191783Srmacklem nfsd_modevent, 3399191783Srmacklem NULL, 3400191783Srmacklem}; 3401191783SrmacklemDECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 3402191783Srmacklem 3403191783Srmacklem/* So that loader and kldload(2) can find us, wherever we are.. */ 3404191783SrmacklemMODULE_VERSION(nfsd, 1); 3405191783SrmacklemMODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 3406216931SrmacklemMODULE_DEPEND(nfsd, nfslock, 1, 1, 1); 3407192574SrmacklemMODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 3408209191SrmacklemMODULE_DEPEND(nfsd, krpc, 1, 1, 1); 3409209191SrmacklemMODULE_DEPEND(nfsd, nfssvc, 1, 1, 1); 3410191783Srmacklem 3411