nfs_nfsdport.c revision 265723
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: stable/9/sys/fs/nfsserver/nfs_nfsdport.c 265723 2014-05-09 00:28:07Z rmacklem $"); 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; 60243738Srmacklemextern struct nfsv4lock nfsd_suspend_lock; 61191783Srmacklemstruct vfsoptlist nfsv4root_opt, nfsv4root_newopt; 62191783SrmacklemNFSDLOCKMUTEX; 63255532Srmacklemstruct nfsrchash_bucket nfsrchash_table[NFSRVCACHE_HASHSIZE]; 64261067Smavstruct nfsrchash_bucket nfsrcahash_table[NFSRVCACHE_HASHSIZE]; 65255532Srmacklemstruct mtx nfsrc_udpmtx; 66191783Srmacklemstruct mtx nfs_v4root_mutex; 67191783Srmacklemstruct nfsrvfh nfs_rootfh, nfs_pubfh; 68191783Srmacklemint nfs_pubfhset = 0, nfs_rootfhset = 0; 69217432Srmacklemstruct proc *nfsd_master_proc = NULL; 70217432Srmacklemstatic pid_t nfsd_master_pid = (pid_t)-1; 71217432Srmacklemstatic char nfsd_master_comm[MAXCOMLEN + 1]; 72217432Srmacklemstatic struct timeval nfsd_master_start; 73192503Srmacklemstatic uint32_t nfsv4_sysid = 0; 74191783Srmacklem 75192255Srmacklemstatic int nfssvc_srvcall(struct thread *, struct nfssvc_args *, 76192255Srmacklem struct ucred *); 77191783Srmacklem 78220645Srmacklemint nfsrv_enable_crossmntpt = 1; 79191783Srmacklemstatic int nfs_commit_blks; 80191783Srmacklemstatic int nfs_commit_miss; 81191783Srmacklemextern int nfsrv_issuedelegs; 82192255Srmacklemextern int nfsrv_dolocallocks; 83192255Srmacklem 84221615SrmacklemSYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW, 0, "New NFS server"); 85221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, mirrormnt, CTLFLAG_RW, 86220645Srmacklem &nfsrv_enable_crossmntpt, 0, "Enable nfsd to cross mount points"); 87221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 88192255Srmacklem 0, ""); 89221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 90192255Srmacklem 0, ""); 91221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, issue_delegations, CTLFLAG_RW, 92192255Srmacklem &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); 93221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_locallocks, CTLFLAG_RW, 94192255Srmacklem &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files"); 95191783Srmacklem 96229617Sjhb#define MAX_REORDERED_RPC 16 97229617Sjhb#define NUM_HEURISTIC 1031 98191783Srmacklem#define NHUSE_INIT 64 99191783Srmacklem#define NHUSE_INC 16 100191783Srmacklem#define NHUSE_MAX 2048 101191783Srmacklem 102191783Srmacklemstatic struct nfsheur { 103191783Srmacklem struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 104229617Sjhb off_t nh_nextoff; /* next offset for sequential detection */ 105191783Srmacklem int nh_use; /* use count for selection */ 106191783Srmacklem int nh_seqcount; /* heuristic */ 107191783Srmacklem} nfsheur[NUM_HEURISTIC]; 108191783Srmacklem 109191783Srmacklem 110191783Srmacklem/* 111229617Sjhb * Heuristic to detect sequential operation. 112229617Sjhb */ 113229617Sjhbstatic struct nfsheur * 114229617Sjhbnfsrv_sequential_heuristic(struct uio *uio, struct vnode *vp) 115229617Sjhb{ 116229617Sjhb struct nfsheur *nh; 117229617Sjhb int hi, try; 118229617Sjhb 119229617Sjhb /* Locate best candidate. */ 120229617Sjhb try = 32; 121229617Sjhb hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 122229617Sjhb nh = &nfsheur[hi]; 123229617Sjhb while (try--) { 124229617Sjhb if (nfsheur[hi].nh_vp == vp) { 125229617Sjhb nh = &nfsheur[hi]; 126229617Sjhb break; 127229617Sjhb } 128229617Sjhb if (nfsheur[hi].nh_use > 0) 129229617Sjhb --nfsheur[hi].nh_use; 130229617Sjhb hi = (hi + 1) % NUM_HEURISTIC; 131229617Sjhb if (nfsheur[hi].nh_use < nh->nh_use) 132229617Sjhb nh = &nfsheur[hi]; 133229617Sjhb } 134229617Sjhb 135229617Sjhb /* Initialize hint if this is a new file. */ 136229617Sjhb if (nh->nh_vp != vp) { 137229617Sjhb nh->nh_vp = vp; 138229617Sjhb nh->nh_nextoff = uio->uio_offset; 139229617Sjhb nh->nh_use = NHUSE_INIT; 140229617Sjhb if (uio->uio_offset == 0) 141229617Sjhb nh->nh_seqcount = 4; 142229617Sjhb else 143229617Sjhb nh->nh_seqcount = 1; 144229617Sjhb } 145229617Sjhb 146229617Sjhb /* Calculate heuristic. */ 147229617Sjhb if ((uio->uio_offset == 0 && nh->nh_seqcount > 0) || 148229617Sjhb uio->uio_offset == nh->nh_nextoff) { 149229617Sjhb /* See comments in vfs_vnops.c:sequential_heuristic(). */ 150229617Sjhb nh->nh_seqcount += howmany(uio->uio_resid, 16384); 151229617Sjhb if (nh->nh_seqcount > IO_SEQMAX) 152229617Sjhb nh->nh_seqcount = IO_SEQMAX; 153229617Sjhb } else if (qabs(uio->uio_offset - nh->nh_nextoff) <= MAX_REORDERED_RPC * 154229617Sjhb imax(vp->v_mount->mnt_stat.f_iosize, uio->uio_resid)) { 155229617Sjhb /* Probably a reordered RPC, leave seqcount alone. */ 156229617Sjhb } else if (nh->nh_seqcount > 1) { 157229617Sjhb nh->nh_seqcount /= 2; 158229617Sjhb } else { 159229617Sjhb nh->nh_seqcount = 0; 160229617Sjhb } 161229617Sjhb nh->nh_use += NHUSE_INC; 162229617Sjhb if (nh->nh_use > NHUSE_MAX) 163229617Sjhb nh->nh_use = NHUSE_MAX; 164229617Sjhb return (nh); 165229617Sjhb} 166229617Sjhb 167229617Sjhb/* 168191783Srmacklem * Get attributes into nfsvattr structure. 169191783Srmacklem */ 170191783Srmacklemint 171191783Srmacklemnfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 172216693Srmacklem struct thread *p, int vpislocked) 173191783Srmacklem{ 174191783Srmacklem int error, lockedit = 0; 175191783Srmacklem 176216693Srmacklem if (vpislocked == 0) { 177216693Srmacklem /* 178216693Srmacklem * When vpislocked == 0, the vnode is either exclusively 179216693Srmacklem * locked by this thread or not locked by this thread. 180216693Srmacklem * As such, shared lock it, if not exclusively locked. 181216693Srmacklem */ 182224083Szack if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { 183216693Srmacklem lockedit = 1; 184224081Szack NFSVOPLOCK(vp, LK_SHARED | LK_RETRY); 185216693Srmacklem } 186191783Srmacklem } 187191783Srmacklem error = VOP_GETATTR(vp, &nvap->na_vattr, cred); 188216693Srmacklem if (lockedit != 0) 189224082Szack NFSVOPUNLOCK(vp, 0); 190224086Szack 191224086Szack NFSEXITCODE(error); 192191783Srmacklem return (error); 193191783Srmacklem} 194191783Srmacklem 195191783Srmacklem/* 196191783Srmacklem * Get a file handle for a vnode. 197191783Srmacklem */ 198191783Srmacklemint 199191783Srmacklemnfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 200191783Srmacklem{ 201191783Srmacklem int error; 202191783Srmacklem 203191783Srmacklem NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 204191783Srmacklem fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 205191783Srmacklem error = VOP_VPTOFH(vp, &fhp->fh_fid); 206224086Szack 207224086Szack NFSEXITCODE(error); 208191783Srmacklem return (error); 209191783Srmacklem} 210191783Srmacklem 211191783Srmacklem/* 212191783Srmacklem * Perform access checking for vnodes obtained from file handles that would 213191783Srmacklem * refer to files already opened by a Unix client. You cannot just use 214200999Srmacklem * vn_writechk() and VOP_ACCESSX() for two reasons. 215200999Srmacklem * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write 216200999Srmacklem * case. 217191783Srmacklem * 2 - The owner is to be given access irrespective of mode bits for some 218191783Srmacklem * operations, so that processes that chmod after opening a file don't 219191783Srmacklem * break. 220191783Srmacklem */ 221191783Srmacklemint 222200999Srmacklemnfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred, 223200999Srmacklem struct nfsexstuff *exp, struct thread *p, int override, int vpislocked, 224200999Srmacklem u_int32_t *supportedtypep) 225191783Srmacklem{ 226191783Srmacklem struct vattr vattr; 227191783Srmacklem int error = 0, getret = 0; 228191783Srmacklem 229216893Srmacklem if (vpislocked == 0) { 230224086Szack if (NFSVOPLOCK(vp, LK_SHARED) != 0) { 231224086Szack error = EPERM; 232224086Szack goto out; 233224086Szack } 234216893Srmacklem } 235191783Srmacklem if (accmode & VWRITE) { 236191783Srmacklem /* Just vn_writechk() changed to check rdonly */ 237191783Srmacklem /* 238191783Srmacklem * Disallow write attempts on read-only file systems; 239191783Srmacklem * unless the file is a socket or a block or character 240191783Srmacklem * device resident on the file system. 241191783Srmacklem */ 242191783Srmacklem if (NFSVNO_EXRDONLY(exp) || 243200999Srmacklem (vp->v_mount->mnt_flag & MNT_RDONLY)) { 244191783Srmacklem switch (vp->v_type) { 245191783Srmacklem case VREG: 246191783Srmacklem case VDIR: 247191783Srmacklem case VLNK: 248216893Srmacklem error = EROFS; 249191783Srmacklem default: 250191783Srmacklem break; 251191783Srmacklem } 252191783Srmacklem } 253191783Srmacklem /* 254191783Srmacklem * If there's shared text associated with 255191783Srmacklem * the inode, try to free it up once. If 256191783Srmacklem * we fail, we can't allow writing. 257191783Srmacklem */ 258244658Skib if (VOP_IS_TEXT(vp) && error == 0) 259216893Srmacklem error = ETXTBSY; 260191783Srmacklem } 261216893Srmacklem if (error != 0) { 262216893Srmacklem if (vpislocked == 0) 263224082Szack NFSVOPUNLOCK(vp, 0); 264224086Szack goto out; 265216893Srmacklem } 266191783Srmacklem 267191783Srmacklem /* 268191783Srmacklem * Should the override still be applied when ACLs are enabled? 269191783Srmacklem */ 270200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 271200999Srmacklem if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) { 272200999Srmacklem /* 273200999Srmacklem * Try again with VEXPLICIT_DENY, to see if the test for 274200999Srmacklem * deletion is supported. 275200999Srmacklem */ 276200999Srmacklem error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p); 277200999Srmacklem if (error == 0) { 278200999Srmacklem if (vp->v_type == VDIR) { 279200999Srmacklem accmode &= ~(VDELETE | VDELETE_CHILD); 280200999Srmacklem accmode |= VWRITE; 281200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 282200999Srmacklem } else if (supportedtypep != NULL) { 283200999Srmacklem *supportedtypep &= ~NFSACCESS_DELETE; 284200999Srmacklem } 285200999Srmacklem } 286200999Srmacklem } 287191783Srmacklem 288191783Srmacklem /* 289191783Srmacklem * Allow certain operations for the owner (reads and writes 290191783Srmacklem * on files that are already open). 291191783Srmacklem */ 292191783Srmacklem if (override != NFSACCCHK_NOOVERRIDE && 293191783Srmacklem (error == EPERM || error == EACCES)) { 294191783Srmacklem if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 295191783Srmacklem error = 0; 296191783Srmacklem else if (override & NFSACCCHK_ALLOWOWNER) { 297191783Srmacklem getret = VOP_GETATTR(vp, &vattr, cred); 298191783Srmacklem if (getret == 0 && cred->cr_uid == vattr.va_uid) 299191783Srmacklem error = 0; 300191783Srmacklem } 301191783Srmacklem } 302191783Srmacklem if (vpislocked == 0) 303224082Szack NFSVOPUNLOCK(vp, 0); 304224086Szack 305224086Szackout: 306224086Szack NFSEXITCODE(error); 307191783Srmacklem return (error); 308191783Srmacklem} 309191783Srmacklem 310191783Srmacklem/* 311191783Srmacklem * Set attribute(s) vnop. 312191783Srmacklem */ 313191783Srmacklemint 314191783Srmacklemnfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 315191783Srmacklem struct thread *p, struct nfsexstuff *exp) 316191783Srmacklem{ 317191783Srmacklem int error; 318191783Srmacklem 319191783Srmacklem error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 320224086Szack NFSEXITCODE(error); 321191783Srmacklem return (error); 322191783Srmacklem} 323191783Srmacklem 324191783Srmacklem/* 325232018Srmacklem * Set up nameidata for a lookup() call and do it. 326191783Srmacklem */ 327191783Srmacklemint 328191783Srmacklemnfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 329191783Srmacklem struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p, 330191783Srmacklem struct vnode **retdirp) 331191783Srmacklem{ 332191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 333191783Srmacklem int i; 334191783Srmacklem struct iovec aiov; 335191783Srmacklem struct uio auio; 336191783Srmacklem int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 337191783Srmacklem int error = 0, crossmnt; 338191783Srmacklem char *cp; 339191783Srmacklem 340191783Srmacklem *retdirp = NULL; 341191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 342225356Srmacklem ndp->ni_strictrelative = 0; 343191783Srmacklem /* 344191783Srmacklem * Extract and set starting directory. 345191783Srmacklem */ 346191783Srmacklem if (dp->v_type != VDIR) { 347191783Srmacklem if (islocked) 348191783Srmacklem vput(dp); 349191783Srmacklem else 350191783Srmacklem vrele(dp); 351191783Srmacklem nfsvno_relpathbuf(ndp); 352224086Szack error = ENOTDIR; 353224086Szack goto out1; 354191783Srmacklem } 355191783Srmacklem if (islocked) 356224080Szack NFSVOPUNLOCK(dp, 0); 357191783Srmacklem VREF(dp); 358191783Srmacklem *retdirp = dp; 359191783Srmacklem if (NFSVNO_EXRDONLY(exp)) 360191783Srmacklem cnp->cn_flags |= RDONLY; 361191783Srmacklem ndp->ni_segflg = UIO_SYSSPACE; 362191783Srmacklem crossmnt = 1; 363191783Srmacklem 364191783Srmacklem if (nd->nd_flag & ND_PUBLOOKUP) { 365191783Srmacklem ndp->ni_loopcnt = 0; 366191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 367191783Srmacklem vrele(dp); 368191783Srmacklem /* 369191783Srmacklem * Check for degenerate pathnames here, since lookup() 370191783Srmacklem * panics on them. 371191783Srmacklem */ 372191783Srmacklem for (i = 1; i < ndp->ni_pathlen; i++) 373191783Srmacklem if (cnp->cn_pnbuf[i] != '/') 374191783Srmacklem break; 375191783Srmacklem if (i == ndp->ni_pathlen) { 376191783Srmacklem error = NFSERR_ACCES; 377191783Srmacklem goto out; 378191783Srmacklem } 379191783Srmacklem dp = rootvnode; 380191783Srmacklem VREF(dp); 381191783Srmacklem } 382220645Srmacklem } else if ((nfsrv_enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 383191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) { 384191783Srmacklem /* 385191783Srmacklem * Only cross mount points for NFSv4 when doing a 386191783Srmacklem * mount while traversing the file system above 387220645Srmacklem * the mount point, unless nfsrv_enable_crossmntpt is set. 388191783Srmacklem */ 389191783Srmacklem cnp->cn_flags |= NOCROSSMOUNT; 390191783Srmacklem crossmnt = 0; 391191783Srmacklem } 392191783Srmacklem 393191783Srmacklem /* 394191783Srmacklem * Initialize for scan, set ni_startdir and bump ref on dp again 395191783Srmacklem * becuase lookup() will dereference ni_startdir. 396191783Srmacklem */ 397191783Srmacklem 398191783Srmacklem cnp->cn_thread = p; 399191783Srmacklem ndp->ni_startdir = dp; 400191783Srmacklem ndp->ni_rootdir = rootvnode; 401232683Srmacklem ndp->ni_topdir = NULL; 402191783Srmacklem 403191783Srmacklem if (!lockleaf) 404191783Srmacklem cnp->cn_flags |= LOCKLEAF; 405191783Srmacklem for (;;) { 406191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 407191783Srmacklem /* 408191783Srmacklem * Call lookup() to do the real work. If an error occurs, 409191783Srmacklem * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 410191783Srmacklem * we do not have to dereference anything before returning. 411191783Srmacklem * In either case ni_startdir will be dereferenced and NULLed 412191783Srmacklem * out. 413191783Srmacklem */ 414191783Srmacklem error = lookup(ndp); 415191783Srmacklem if (error) 416191783Srmacklem break; 417191783Srmacklem 418191783Srmacklem /* 419191783Srmacklem * Check for encountering a symbolic link. Trivial 420191783Srmacklem * termination occurs if no symlink encountered. 421191783Srmacklem */ 422191783Srmacklem if ((cnp->cn_flags & ISSYMLINK) == 0) { 423191783Srmacklem if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0) 424191783Srmacklem nfsvno_relpathbuf(ndp); 425191783Srmacklem if (ndp->ni_vp && !lockleaf) 426224080Szack NFSVOPUNLOCK(ndp->ni_vp, 0); 427191783Srmacklem break; 428191783Srmacklem } 429191783Srmacklem 430191783Srmacklem /* 431191783Srmacklem * Validate symlink 432191783Srmacklem */ 433191783Srmacklem if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 434224080Szack NFSVOPUNLOCK(ndp->ni_dvp, 0); 435191783Srmacklem if (!(nd->nd_flag & ND_PUBLOOKUP)) { 436191783Srmacklem error = EINVAL; 437191783Srmacklem goto badlink2; 438191783Srmacklem } 439191783Srmacklem 440191783Srmacklem if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 441191783Srmacklem error = ELOOP; 442191783Srmacklem goto badlink2; 443191783Srmacklem } 444191783Srmacklem if (ndp->ni_pathlen > 1) 445191783Srmacklem cp = uma_zalloc(namei_zone, M_WAITOK); 446191783Srmacklem else 447191783Srmacklem cp = cnp->cn_pnbuf; 448191783Srmacklem aiov.iov_base = cp; 449191783Srmacklem aiov.iov_len = MAXPATHLEN; 450191783Srmacklem auio.uio_iov = &aiov; 451191783Srmacklem auio.uio_iovcnt = 1; 452191783Srmacklem auio.uio_offset = 0; 453191783Srmacklem auio.uio_rw = UIO_READ; 454191783Srmacklem auio.uio_segflg = UIO_SYSSPACE; 455191783Srmacklem auio.uio_td = NULL; 456191783Srmacklem auio.uio_resid = MAXPATHLEN; 457191783Srmacklem error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 458191783Srmacklem if (error) { 459191783Srmacklem badlink1: 460191783Srmacklem if (ndp->ni_pathlen > 1) 461191783Srmacklem uma_zfree(namei_zone, cp); 462191783Srmacklem badlink2: 463191783Srmacklem vrele(ndp->ni_dvp); 464191783Srmacklem vput(ndp->ni_vp); 465191783Srmacklem break; 466191783Srmacklem } 467191783Srmacklem linklen = MAXPATHLEN - auio.uio_resid; 468191783Srmacklem if (linklen == 0) { 469191783Srmacklem error = ENOENT; 470191783Srmacklem goto badlink1; 471191783Srmacklem } 472191783Srmacklem if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 473191783Srmacklem error = ENAMETOOLONG; 474191783Srmacklem goto badlink1; 475191783Srmacklem } 476191783Srmacklem 477191783Srmacklem /* 478191783Srmacklem * Adjust or replace path 479191783Srmacklem */ 480191783Srmacklem if (ndp->ni_pathlen > 1) { 481191783Srmacklem NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 482191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 483191783Srmacklem cnp->cn_pnbuf = cp; 484191783Srmacklem } else 485191783Srmacklem cnp->cn_pnbuf[linklen] = '\0'; 486191783Srmacklem ndp->ni_pathlen += linklen; 487191783Srmacklem 488191783Srmacklem /* 489191783Srmacklem * Cleanup refs for next loop and check if root directory 490191783Srmacklem * should replace current directory. Normally ni_dvp 491191783Srmacklem * becomes the new base directory and is cleaned up when 492191783Srmacklem * we loop. Explicitly null pointers after invalidation 493191783Srmacklem * to clarify operation. 494191783Srmacklem */ 495191783Srmacklem vput(ndp->ni_vp); 496191783Srmacklem ndp->ni_vp = NULL; 497191783Srmacklem 498191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 499191783Srmacklem vrele(ndp->ni_dvp); 500191783Srmacklem ndp->ni_dvp = ndp->ni_rootdir; 501191783Srmacklem VREF(ndp->ni_dvp); 502191783Srmacklem } 503191783Srmacklem ndp->ni_startdir = ndp->ni_dvp; 504191783Srmacklem ndp->ni_dvp = NULL; 505191783Srmacklem } 506191783Srmacklem if (!lockleaf) 507191783Srmacklem cnp->cn_flags &= ~LOCKLEAF; 508191783Srmacklem 509191783Srmacklemout: 510191783Srmacklem if (error) { 511191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 512191783Srmacklem ndp->ni_vp = NULL; 513191783Srmacklem ndp->ni_dvp = NULL; 514191783Srmacklem ndp->ni_startdir = NULL; 515191783Srmacklem cnp->cn_flags &= ~HASBUF; 516191783Srmacklem } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 517191783Srmacklem ndp->ni_dvp = NULL; 518191783Srmacklem } 519224086Szack 520224086Szackout1: 521224086Szack NFSEXITCODE2(error, nd); 522191783Srmacklem return (error); 523191783Srmacklem} 524191783Srmacklem 525191783Srmacklem/* 526191783Srmacklem * Set up a pathname buffer and return a pointer to it and, optionally 527191783Srmacklem * set a hash pointer. 528191783Srmacklem */ 529191783Srmacklemvoid 530191783Srmacklemnfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 531191783Srmacklem{ 532191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 533191783Srmacklem 534191783Srmacklem cnp->cn_flags |= (NOMACCHECK | HASBUF); 535191783Srmacklem cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 536191783Srmacklem if (hashpp != NULL) 537191783Srmacklem *hashpp = NULL; 538191783Srmacklem *bufpp = cnp->cn_pnbuf; 539191783Srmacklem} 540191783Srmacklem 541191783Srmacklem/* 542191783Srmacklem * Release the above path buffer, if not released by nfsvno_namei(). 543191783Srmacklem */ 544191783Srmacklemvoid 545191783Srmacklemnfsvno_relpathbuf(struct nameidata *ndp) 546191783Srmacklem{ 547191783Srmacklem 548191783Srmacklem if ((ndp->ni_cnd.cn_flags & HASBUF) == 0) 549191783Srmacklem panic("nfsrelpath"); 550191783Srmacklem uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 551191783Srmacklem ndp->ni_cnd.cn_flags &= ~HASBUF; 552191783Srmacklem} 553191783Srmacklem 554191783Srmacklem/* 555191783Srmacklem * Readlink vnode op into an mbuf list. 556191783Srmacklem */ 557191783Srmacklemint 558191783Srmacklemnfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p, 559191783Srmacklem struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 560191783Srmacklem{ 561191783Srmacklem struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; 562191783Srmacklem struct iovec *ivp = iv; 563191783Srmacklem struct uio io, *uiop = &io; 564191783Srmacklem struct mbuf *mp, *mp2 = NULL, *mp3 = NULL; 565224086Szack int i, len, tlen, error = 0; 566191783Srmacklem 567191783Srmacklem len = 0; 568191783Srmacklem i = 0; 569191783Srmacklem while (len < NFS_MAXPATHLEN) { 570191783Srmacklem NFSMGET(mp); 571191783Srmacklem MCLGET(mp, M_WAIT); 572191783Srmacklem mp->m_len = NFSMSIZ(mp); 573191783Srmacklem if (len == 0) { 574191783Srmacklem mp3 = mp2 = mp; 575191783Srmacklem } else { 576191783Srmacklem mp2->m_next = mp; 577191783Srmacklem mp2 = mp; 578191783Srmacklem } 579191783Srmacklem if ((len + mp->m_len) > NFS_MAXPATHLEN) { 580191783Srmacklem mp->m_len = NFS_MAXPATHLEN - len; 581191783Srmacklem len = NFS_MAXPATHLEN; 582191783Srmacklem } else { 583191783Srmacklem len += mp->m_len; 584191783Srmacklem } 585191783Srmacklem ivp->iov_base = mtod(mp, caddr_t); 586191783Srmacklem ivp->iov_len = mp->m_len; 587191783Srmacklem i++; 588191783Srmacklem ivp++; 589191783Srmacklem } 590191783Srmacklem uiop->uio_iov = iv; 591191783Srmacklem uiop->uio_iovcnt = i; 592191783Srmacklem uiop->uio_offset = 0; 593191783Srmacklem uiop->uio_resid = len; 594191783Srmacklem uiop->uio_rw = UIO_READ; 595191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 596191783Srmacklem uiop->uio_td = NULL; 597191783Srmacklem error = VOP_READLINK(vp, uiop, cred); 598191783Srmacklem if (error) { 599191783Srmacklem m_freem(mp3); 600191783Srmacklem *lenp = 0; 601224086Szack goto out; 602191783Srmacklem } 603191783Srmacklem if (uiop->uio_resid > 0) { 604191783Srmacklem len -= uiop->uio_resid; 605191783Srmacklem tlen = NFSM_RNDUP(len); 606191783Srmacklem nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len); 607191783Srmacklem } 608191783Srmacklem *lenp = len; 609191783Srmacklem *mpp = mp3; 610191783Srmacklem *mpendp = mp; 611224086Szack 612224086Szackout: 613224086Szack NFSEXITCODE(error); 614224086Szack return (error); 615191783Srmacklem} 616191783Srmacklem 617191783Srmacklem/* 618191783Srmacklem * Read vnode op call into mbuf list. 619191783Srmacklem */ 620191783Srmacklemint 621191783Srmacklemnfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 622191783Srmacklem struct thread *p, struct mbuf **mpp, struct mbuf **mpendp) 623191783Srmacklem{ 624191783Srmacklem struct mbuf *m; 625191783Srmacklem int i; 626191783Srmacklem struct iovec *iv; 627191783Srmacklem struct iovec *iv2; 628229617Sjhb int error = 0, len, left, siz, tlen, ioflag = 0; 629191783Srmacklem struct mbuf *m2 = NULL, *m3; 630191783Srmacklem struct uio io, *uiop = &io; 631191783Srmacklem struct nfsheur *nh; 632191783Srmacklem 633191783Srmacklem len = left = NFSM_RNDUP(cnt); 634191783Srmacklem m3 = NULL; 635191783Srmacklem /* 636191783Srmacklem * Generate the mbuf list with the uio_iov ref. to it. 637191783Srmacklem */ 638191783Srmacklem i = 0; 639191783Srmacklem while (left > 0) { 640191783Srmacklem NFSMGET(m); 641191783Srmacklem MCLGET(m, M_WAIT); 642191783Srmacklem m->m_len = 0; 643191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 644191783Srmacklem left -= siz; 645191783Srmacklem i++; 646191783Srmacklem if (m3) 647191783Srmacklem m2->m_next = m; 648191783Srmacklem else 649191783Srmacklem m3 = m; 650191783Srmacklem m2 = m; 651191783Srmacklem } 652191783Srmacklem MALLOC(iv, struct iovec *, i * sizeof (struct iovec), 653191783Srmacklem M_TEMP, M_WAITOK); 654191783Srmacklem uiop->uio_iov = iv2 = iv; 655191783Srmacklem m = m3; 656191783Srmacklem left = len; 657191783Srmacklem i = 0; 658191783Srmacklem while (left > 0) { 659191783Srmacklem if (m == NULL) 660191783Srmacklem panic("nfsvno_read iov"); 661191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 662191783Srmacklem if (siz > 0) { 663191783Srmacklem iv->iov_base = mtod(m, caddr_t) + m->m_len; 664191783Srmacklem iv->iov_len = siz; 665191783Srmacklem m->m_len += siz; 666191783Srmacklem left -= siz; 667191783Srmacklem iv++; 668191783Srmacklem i++; 669191783Srmacklem } 670191783Srmacklem m = m->m_next; 671191783Srmacklem } 672191783Srmacklem uiop->uio_iovcnt = i; 673191783Srmacklem uiop->uio_offset = off; 674191783Srmacklem uiop->uio_resid = len; 675191783Srmacklem uiop->uio_rw = UIO_READ; 676191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 677265723Srmacklem uiop->uio_td = NULL; 678229617Sjhb nh = nfsrv_sequential_heuristic(uiop, vp); 679229617Sjhb ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 680191783Srmacklem error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 681191783Srmacklem FREE((caddr_t)iv2, M_TEMP); 682191783Srmacklem if (error) { 683191783Srmacklem m_freem(m3); 684191783Srmacklem *mpp = NULL; 685224086Szack goto out; 686191783Srmacklem } 687229617Sjhb nh->nh_nextoff = uiop->uio_offset; 688191783Srmacklem tlen = len - uiop->uio_resid; 689191783Srmacklem cnt = cnt < tlen ? cnt : tlen; 690191783Srmacklem tlen = NFSM_RNDUP(cnt); 691191783Srmacklem if (tlen == 0) { 692191783Srmacklem m_freem(m3); 693191783Srmacklem m3 = NULL; 694191783Srmacklem } else if (len != tlen || tlen != cnt) 695191783Srmacklem nfsrv_adj(m3, len - tlen, tlen - cnt); 696191783Srmacklem *mpp = m3; 697191783Srmacklem *mpendp = m2; 698224086Szack 699224086Szackout: 700224086Szack NFSEXITCODE(error); 701224086Szack return (error); 702191783Srmacklem} 703191783Srmacklem 704191783Srmacklem/* 705191783Srmacklem * Write vnode op from an mbuf list. 706191783Srmacklem */ 707191783Srmacklemint 708191783Srmacklemnfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable, 709191783Srmacklem struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 710191783Srmacklem{ 711191783Srmacklem struct iovec *ivp; 712191783Srmacklem int i, len; 713191783Srmacklem struct iovec *iv; 714191783Srmacklem int ioflags, error; 715191783Srmacklem struct uio io, *uiop = &io; 716229617Sjhb struct nfsheur *nh; 717191783Srmacklem 718191783Srmacklem MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP, 719191783Srmacklem M_WAITOK); 720191783Srmacklem uiop->uio_iov = iv = ivp; 721191783Srmacklem uiop->uio_iovcnt = cnt; 722191783Srmacklem i = mtod(mp, caddr_t) + mp->m_len - cp; 723191783Srmacklem len = retlen; 724191783Srmacklem while (len > 0) { 725191783Srmacklem if (mp == NULL) 726191783Srmacklem panic("nfsvno_write"); 727191783Srmacklem if (i > 0) { 728191783Srmacklem i = min(i, len); 729191783Srmacklem ivp->iov_base = cp; 730191783Srmacklem ivp->iov_len = i; 731191783Srmacklem ivp++; 732191783Srmacklem len -= i; 733191783Srmacklem } 734191783Srmacklem mp = mp->m_next; 735191783Srmacklem if (mp) { 736191783Srmacklem i = mp->m_len; 737191783Srmacklem cp = mtod(mp, caddr_t); 738191783Srmacklem } 739191783Srmacklem } 740191783Srmacklem 741191783Srmacklem if (stable == NFSWRITE_UNSTABLE) 742191783Srmacklem ioflags = IO_NODELOCKED; 743191783Srmacklem else 744191783Srmacklem ioflags = (IO_SYNC | IO_NODELOCKED); 745191783Srmacklem uiop->uio_resid = retlen; 746191783Srmacklem uiop->uio_rw = UIO_WRITE; 747191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 748191783Srmacklem NFSUIOPROC(uiop, p); 749191783Srmacklem uiop->uio_offset = off; 750229617Sjhb nh = nfsrv_sequential_heuristic(uiop, vp); 751229617Sjhb ioflags |= nh->nh_seqcount << IO_SEQSHIFT; 752191783Srmacklem error = VOP_WRITE(vp, uiop, ioflags, cred); 753229617Sjhb if (error == 0) 754229617Sjhb nh->nh_nextoff = uiop->uio_offset; 755191783Srmacklem FREE((caddr_t)iv, M_TEMP); 756224086Szack 757224086Szack NFSEXITCODE(error); 758191783Srmacklem return (error); 759191783Srmacklem} 760191783Srmacklem 761191783Srmacklem/* 762191783Srmacklem * Common code for creating a regular file (plus special files for V2). 763191783Srmacklem */ 764191783Srmacklemint 765191783Srmacklemnfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 766191783Srmacklem struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 767199616Srmacklem int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp) 768191783Srmacklem{ 769191783Srmacklem u_quad_t tempsize; 770191783Srmacklem int error; 771191783Srmacklem 772191783Srmacklem error = nd->nd_repstat; 773191783Srmacklem if (!error && ndp->ni_vp == NULL) { 774191783Srmacklem if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 775191783Srmacklem vrele(ndp->ni_startdir); 776191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, 777191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 778191783Srmacklem vput(ndp->ni_dvp); 779191783Srmacklem nfsvno_relpathbuf(ndp); 780191783Srmacklem if (!error) { 781191783Srmacklem if (*exclusive_flagp) { 782191783Srmacklem *exclusive_flagp = 0; 783191783Srmacklem NFSVNO_ATTRINIT(nvap); 784199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 785199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 786191783Srmacklem error = VOP_SETATTR(ndp->ni_vp, 787191783Srmacklem &nvap->na_vattr, nd->nd_cred); 788191783Srmacklem } 789191783Srmacklem } 790191783Srmacklem /* 791191783Srmacklem * NFS V2 Only. nfsrvd_mknod() does this for V3. 792191783Srmacklem * (This implies, just get out on an error.) 793191783Srmacklem */ 794191783Srmacklem } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 795191783Srmacklem nvap->na_type == VFIFO) { 796191783Srmacklem if (nvap->na_type == VCHR && rdev == 0xffffffff) 797191783Srmacklem nvap->na_type = VFIFO; 798191783Srmacklem if (nvap->na_type != VFIFO && 799191783Srmacklem (error = priv_check_cred(nd->nd_cred, 800191783Srmacklem PRIV_VFS_MKNOD_DEV, 0))) { 801191783Srmacklem vrele(ndp->ni_startdir); 802191783Srmacklem nfsvno_relpathbuf(ndp); 803191783Srmacklem vput(ndp->ni_dvp); 804224086Szack goto out; 805191783Srmacklem } 806191783Srmacklem nvap->na_rdev = rdev; 807191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 808191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 809191783Srmacklem vput(ndp->ni_dvp); 810191783Srmacklem nfsvno_relpathbuf(ndp); 811220546Srmacklem vrele(ndp->ni_startdir); 812220546Srmacklem if (error) 813224086Szack goto out; 814191783Srmacklem } else { 815191783Srmacklem vrele(ndp->ni_startdir); 816191783Srmacklem nfsvno_relpathbuf(ndp); 817191783Srmacklem vput(ndp->ni_dvp); 818224086Szack error = ENXIO; 819224086Szack goto out; 820191783Srmacklem } 821191783Srmacklem *vpp = ndp->ni_vp; 822191783Srmacklem } else { 823191783Srmacklem /* 824191783Srmacklem * Handle cases where error is already set and/or 825191783Srmacklem * the file exists. 826191783Srmacklem * 1 - clean up the lookup 827191783Srmacklem * 2 - iff !error and na_size set, truncate it 828191783Srmacklem */ 829191783Srmacklem vrele(ndp->ni_startdir); 830191783Srmacklem nfsvno_relpathbuf(ndp); 831191783Srmacklem *vpp = ndp->ni_vp; 832191783Srmacklem if (ndp->ni_dvp == *vpp) 833191783Srmacklem vrele(ndp->ni_dvp); 834191783Srmacklem else 835191783Srmacklem vput(ndp->ni_dvp); 836191783Srmacklem if (!error && nvap->na_size != VNOVAL) { 837200999Srmacklem error = nfsvno_accchk(*vpp, VWRITE, 838191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 839200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 840191783Srmacklem if (!error) { 841191783Srmacklem tempsize = nvap->na_size; 842191783Srmacklem NFSVNO_ATTRINIT(nvap); 843191783Srmacklem nvap->na_size = tempsize; 844191783Srmacklem error = VOP_SETATTR(*vpp, 845191783Srmacklem &nvap->na_vattr, nd->nd_cred); 846191783Srmacklem } 847191783Srmacklem } 848191783Srmacklem if (error) 849191783Srmacklem vput(*vpp); 850191783Srmacklem } 851224086Szack 852224086Szackout: 853224086Szack NFSEXITCODE(error); 854191783Srmacklem return (error); 855191783Srmacklem} 856191783Srmacklem 857191783Srmacklem/* 858191783Srmacklem * Do a mknod vnode op. 859191783Srmacklem */ 860191783Srmacklemint 861191783Srmacklemnfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, 862191783Srmacklem struct thread *p) 863191783Srmacklem{ 864191783Srmacklem int error = 0; 865191783Srmacklem enum vtype vtyp; 866191783Srmacklem 867191783Srmacklem vtyp = nvap->na_type; 868191783Srmacklem /* 869191783Srmacklem * Iff doesn't exist, create it. 870191783Srmacklem */ 871191783Srmacklem if (ndp->ni_vp) { 872191783Srmacklem vrele(ndp->ni_startdir); 873191783Srmacklem nfsvno_relpathbuf(ndp); 874191783Srmacklem vput(ndp->ni_dvp); 875191783Srmacklem vrele(ndp->ni_vp); 876224086Szack error = EEXIST; 877224086Szack goto out; 878191783Srmacklem } 879191783Srmacklem if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { 880191783Srmacklem vrele(ndp->ni_startdir); 881191783Srmacklem nfsvno_relpathbuf(ndp); 882191783Srmacklem vput(ndp->ni_dvp); 883224086Szack error = NFSERR_BADTYPE; 884224086Szack goto out; 885191783Srmacklem } 886191783Srmacklem if (vtyp == VSOCK) { 887191783Srmacklem vrele(ndp->ni_startdir); 888191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, 889191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 890191783Srmacklem vput(ndp->ni_dvp); 891191783Srmacklem nfsvno_relpathbuf(ndp); 892191783Srmacklem } else { 893191783Srmacklem if (nvap->na_type != VFIFO && 894191783Srmacklem (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) { 895191783Srmacklem vrele(ndp->ni_startdir); 896191783Srmacklem nfsvno_relpathbuf(ndp); 897191783Srmacklem vput(ndp->ni_dvp); 898224086Szack goto out; 899191783Srmacklem } 900191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 901191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 902191783Srmacklem vput(ndp->ni_dvp); 903191783Srmacklem nfsvno_relpathbuf(ndp); 904216898Srmacklem vrele(ndp->ni_startdir); 905191783Srmacklem /* 906191783Srmacklem * Since VOP_MKNOD returns the ni_vp, I can't 907191783Srmacklem * see any reason to do the lookup. 908191783Srmacklem */ 909191783Srmacklem } 910224086Szack 911224086Szackout: 912224086Szack NFSEXITCODE(error); 913191783Srmacklem return (error); 914191783Srmacklem} 915191783Srmacklem 916191783Srmacklem/* 917191783Srmacklem * Mkdir vnode op. 918191783Srmacklem */ 919191783Srmacklemint 920191783Srmacklemnfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, 921191783Srmacklem struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 922191783Srmacklem{ 923191783Srmacklem int error = 0; 924191783Srmacklem 925191783Srmacklem if (ndp->ni_vp != NULL) { 926191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 927191783Srmacklem vrele(ndp->ni_dvp); 928191783Srmacklem else 929191783Srmacklem vput(ndp->ni_dvp); 930191783Srmacklem vrele(ndp->ni_vp); 931206063Srmacklem nfsvno_relpathbuf(ndp); 932224086Szack error = EEXIST; 933224086Szack goto out; 934191783Srmacklem } 935191783Srmacklem error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 936191783Srmacklem &nvap->na_vattr); 937191783Srmacklem vput(ndp->ni_dvp); 938191783Srmacklem nfsvno_relpathbuf(ndp); 939224086Szack 940224086Szackout: 941224086Szack NFSEXITCODE(error); 942191783Srmacklem return (error); 943191783Srmacklem} 944191783Srmacklem 945191783Srmacklem/* 946191783Srmacklem * symlink vnode op. 947191783Srmacklem */ 948191783Srmacklemint 949191783Srmacklemnfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, 950191783Srmacklem int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, 951191783Srmacklem struct nfsexstuff *exp) 952191783Srmacklem{ 953191783Srmacklem int error = 0; 954191783Srmacklem 955191783Srmacklem if (ndp->ni_vp) { 956191783Srmacklem vrele(ndp->ni_startdir); 957191783Srmacklem nfsvno_relpathbuf(ndp); 958191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 959191783Srmacklem vrele(ndp->ni_dvp); 960191783Srmacklem else 961191783Srmacklem vput(ndp->ni_dvp); 962191783Srmacklem vrele(ndp->ni_vp); 963224086Szack error = EEXIST; 964224086Szack goto out; 965191783Srmacklem } 966191783Srmacklem 967191783Srmacklem error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 968191783Srmacklem &nvap->na_vattr, pathcp); 969191783Srmacklem vput(ndp->ni_dvp); 970191783Srmacklem vrele(ndp->ni_startdir); 971191783Srmacklem nfsvno_relpathbuf(ndp); 972191783Srmacklem /* 973191783Srmacklem * Although FreeBSD still had the lookup code in 974191783Srmacklem * it for 7/current, there doesn't seem to be any 975191783Srmacklem * point, since VOP_SYMLINK() returns the ni_vp. 976191783Srmacklem * Just vput it for v2. 977191783Srmacklem */ 978191783Srmacklem if (!not_v2 && !error) 979191783Srmacklem vput(ndp->ni_vp); 980224086Szack 981224086Szackout: 982224086Szack NFSEXITCODE(error); 983191783Srmacklem return (error); 984191783Srmacklem} 985191783Srmacklem 986191783Srmacklem/* 987191783Srmacklem * Parse symbolic link arguments. 988191783Srmacklem * This function has an ugly side effect. It will MALLOC() an area for 989191783Srmacklem * the symlink and set iov_base to point to it, only if it succeeds. 990191783Srmacklem * So, if it returns with uiop->uio_iov->iov_base != NULL, that must 991191783Srmacklem * be FREE'd later. 992191783Srmacklem */ 993191783Srmacklemint 994191783Srmacklemnfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, 995191783Srmacklem struct thread *p, char **pathcpp, int *lenp) 996191783Srmacklem{ 997191783Srmacklem u_int32_t *tl; 998191783Srmacklem char *pathcp = NULL; 999191783Srmacklem int error = 0, len; 1000191783Srmacklem struct nfsv2_sattr *sp; 1001191783Srmacklem 1002191783Srmacklem *pathcpp = NULL; 1003191783Srmacklem *lenp = 0; 1004191783Srmacklem if ((nd->nd_flag & ND_NFSV3) && 1005191783Srmacklem (error = nfsrv_sattr(nd, nvap, NULL, NULL, p))) 1006191783Srmacklem goto nfsmout; 1007191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1008191783Srmacklem len = fxdr_unsigned(int, *tl); 1009191783Srmacklem if (len > NFS_MAXPATHLEN || len <= 0) { 1010191783Srmacklem error = EBADRPC; 1011191783Srmacklem goto nfsmout; 1012191783Srmacklem } 1013191783Srmacklem MALLOC(pathcp, caddr_t, len + 1, M_TEMP, M_WAITOK); 1014191783Srmacklem error = nfsrv_mtostr(nd, pathcp, len); 1015191783Srmacklem if (error) 1016191783Srmacklem goto nfsmout; 1017191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1018191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 1019191783Srmacklem nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); 1020191783Srmacklem } 1021191783Srmacklem *pathcpp = pathcp; 1022191783Srmacklem *lenp = len; 1023224086Szack NFSEXITCODE2(0, nd); 1024191783Srmacklem return (0); 1025191783Srmacklemnfsmout: 1026191783Srmacklem if (pathcp) 1027191783Srmacklem free(pathcp, M_TEMP); 1028224086Szack NFSEXITCODE2(error, nd); 1029191783Srmacklem return (error); 1030191783Srmacklem} 1031191783Srmacklem 1032191783Srmacklem/* 1033191783Srmacklem * Remove a non-directory object. 1034191783Srmacklem */ 1035191783Srmacklemint 1036191783Srmacklemnfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1037191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1038191783Srmacklem{ 1039191783Srmacklem struct vnode *vp; 1040191783Srmacklem int error = 0; 1041191783Srmacklem 1042191783Srmacklem vp = ndp->ni_vp; 1043191783Srmacklem if (vp->v_type == VDIR) 1044191783Srmacklem error = NFSERR_ISDIR; 1045191783Srmacklem else if (is_v4) 1046191783Srmacklem error = nfsrv_checkremove(vp, 1, p); 1047191783Srmacklem if (!error) 1048191783Srmacklem error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); 1049191783Srmacklem if (ndp->ni_dvp == vp) 1050191783Srmacklem vrele(ndp->ni_dvp); 1051191783Srmacklem else 1052191783Srmacklem vput(ndp->ni_dvp); 1053191783Srmacklem vput(vp); 1054236134Srmacklem if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0) 1055236134Srmacklem nfsvno_relpathbuf(ndp); 1056224086Szack NFSEXITCODE(error); 1057191783Srmacklem return (error); 1058191783Srmacklem} 1059191783Srmacklem 1060191783Srmacklem/* 1061191783Srmacklem * Remove a directory. 1062191783Srmacklem */ 1063191783Srmacklemint 1064191783Srmacklemnfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1065191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1066191783Srmacklem{ 1067191783Srmacklem struct vnode *vp; 1068191783Srmacklem int error = 0; 1069191783Srmacklem 1070191783Srmacklem vp = ndp->ni_vp; 1071191783Srmacklem if (vp->v_type != VDIR) { 1072191783Srmacklem error = ENOTDIR; 1073191783Srmacklem goto out; 1074191783Srmacklem } 1075191783Srmacklem /* 1076191783Srmacklem * No rmdir "." please. 1077191783Srmacklem */ 1078191783Srmacklem if (ndp->ni_dvp == vp) { 1079191783Srmacklem error = EINVAL; 1080191783Srmacklem goto out; 1081191783Srmacklem } 1082191783Srmacklem /* 1083191783Srmacklem * The root of a mounted filesystem cannot be deleted. 1084191783Srmacklem */ 1085191783Srmacklem if (vp->v_vflag & VV_ROOT) 1086191783Srmacklem error = EBUSY; 1087191783Srmacklemout: 1088191783Srmacklem if (!error) 1089191783Srmacklem error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); 1090191783Srmacklem if (ndp->ni_dvp == vp) 1091191783Srmacklem vrele(ndp->ni_dvp); 1092191783Srmacklem else 1093191783Srmacklem vput(ndp->ni_dvp); 1094191783Srmacklem vput(vp); 1095236134Srmacklem if ((ndp->ni_cnd.cn_flags & SAVENAME) != 0) 1096236134Srmacklem nfsvno_relpathbuf(ndp); 1097224086Szack NFSEXITCODE(error); 1098191783Srmacklem return (error); 1099191783Srmacklem} 1100191783Srmacklem 1101191783Srmacklem/* 1102191783Srmacklem * Rename vnode op. 1103191783Srmacklem */ 1104191783Srmacklemint 1105191783Srmacklemnfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, 1106191783Srmacklem u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p) 1107191783Srmacklem{ 1108191783Srmacklem struct vnode *fvp, *tvp, *tdvp; 1109191783Srmacklem int error = 0; 1110191783Srmacklem 1111191783Srmacklem fvp = fromndp->ni_vp; 1112191783Srmacklem if (ndstat) { 1113191783Srmacklem vrele(fromndp->ni_dvp); 1114191783Srmacklem vrele(fvp); 1115191783Srmacklem error = ndstat; 1116191783Srmacklem goto out1; 1117191783Srmacklem } 1118191783Srmacklem tdvp = tondp->ni_dvp; 1119191783Srmacklem tvp = tondp->ni_vp; 1120191783Srmacklem if (tvp != NULL) { 1121191783Srmacklem if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1122191783Srmacklem error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST; 1123191783Srmacklem goto out; 1124191783Srmacklem } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1125191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST; 1126191783Srmacklem goto out; 1127191783Srmacklem } 1128191783Srmacklem if (tvp->v_type == VDIR && tvp->v_mountedhere) { 1129191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1130191783Srmacklem goto out; 1131191783Srmacklem } 1132191783Srmacklem 1133191783Srmacklem /* 1134191783Srmacklem * A rename to '.' or '..' results in a prematurely 1135191783Srmacklem * unlocked vnode on FreeBSD5, so I'm just going to fail that 1136191783Srmacklem * here. 1137191783Srmacklem */ 1138191783Srmacklem if ((tondp->ni_cnd.cn_namelen == 1 && 1139191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.') || 1140191783Srmacklem (tondp->ni_cnd.cn_namelen == 2 && 1141191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.' && 1142191783Srmacklem tondp->ni_cnd.cn_nameptr[1] == '.')) { 1143191783Srmacklem error = EINVAL; 1144191783Srmacklem goto out; 1145191783Srmacklem } 1146191783Srmacklem } 1147191783Srmacklem if (fvp->v_type == VDIR && fvp->v_mountedhere) { 1148191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1149191783Srmacklem goto out; 1150191783Srmacklem } 1151191783Srmacklem if (fvp->v_mount != tdvp->v_mount) { 1152191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1153191783Srmacklem goto out; 1154191783Srmacklem } 1155191783Srmacklem if (fvp == tdvp) { 1156191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL; 1157191783Srmacklem goto out; 1158191783Srmacklem } 1159191783Srmacklem if (fvp == tvp) { 1160191783Srmacklem /* 1161191783Srmacklem * If source and destination are the same, there is nothing to 1162191783Srmacklem * do. Set error to -1 to indicate this. 1163191783Srmacklem */ 1164191783Srmacklem error = -1; 1165191783Srmacklem goto out; 1166191783Srmacklem } 1167191783Srmacklem if (ndflag & ND_NFSV4) { 1168224081Szack if (NFSVOPLOCK(fvp, LK_EXCLUSIVE) == 0) { 1169216893Srmacklem error = nfsrv_checkremove(fvp, 0, p); 1170224082Szack NFSVOPUNLOCK(fvp, 0); 1171216893Srmacklem } else 1172216893Srmacklem error = EPERM; 1173191783Srmacklem if (tvp && !error) 1174191783Srmacklem error = nfsrv_checkremove(tvp, 1, p); 1175191783Srmacklem } else { 1176191783Srmacklem /* 1177191783Srmacklem * For NFSv2 and NFSv3, try to get rid of the delegation, so 1178191783Srmacklem * that the NFSv4 client won't be confused by the rename. 1179191783Srmacklem * Since nfsd_recalldelegation() can only be called on an 1180191783Srmacklem * unlocked vnode at this point and fvp is the file that will 1181191783Srmacklem * still exist after the rename, just do fvp. 1182191783Srmacklem */ 1183191783Srmacklem nfsd_recalldelegation(fvp, p); 1184191783Srmacklem } 1185191783Srmacklemout: 1186191783Srmacklem if (!error) { 1187191783Srmacklem error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, 1188191783Srmacklem &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, 1189191783Srmacklem &tondp->ni_cnd); 1190191783Srmacklem } else { 1191191783Srmacklem if (tdvp == tvp) 1192191783Srmacklem vrele(tdvp); 1193191783Srmacklem else 1194191783Srmacklem vput(tdvp); 1195191783Srmacklem if (tvp) 1196191783Srmacklem vput(tvp); 1197191783Srmacklem vrele(fromndp->ni_dvp); 1198191783Srmacklem vrele(fvp); 1199191783Srmacklem if (error == -1) 1200191783Srmacklem error = 0; 1201191783Srmacklem } 1202191783Srmacklem vrele(tondp->ni_startdir); 1203191783Srmacklem nfsvno_relpathbuf(tondp); 1204191783Srmacklemout1: 1205191783Srmacklem vrele(fromndp->ni_startdir); 1206191783Srmacklem nfsvno_relpathbuf(fromndp); 1207224086Szack NFSEXITCODE(error); 1208191783Srmacklem return (error); 1209191783Srmacklem} 1210191783Srmacklem 1211191783Srmacklem/* 1212191783Srmacklem * Link vnode op. 1213191783Srmacklem */ 1214191783Srmacklemint 1215191783Srmacklemnfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred, 1216191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1217191783Srmacklem{ 1218191783Srmacklem struct vnode *xp; 1219191783Srmacklem int error = 0; 1220191783Srmacklem 1221191783Srmacklem xp = ndp->ni_vp; 1222191783Srmacklem if (xp != NULL) { 1223191783Srmacklem error = EEXIST; 1224191783Srmacklem } else { 1225191783Srmacklem xp = ndp->ni_dvp; 1226191783Srmacklem if (vp->v_mount != xp->v_mount) 1227191783Srmacklem error = EXDEV; 1228191783Srmacklem } 1229191783Srmacklem if (!error) { 1230224081Szack NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY); 1231216893Srmacklem if ((vp->v_iflag & VI_DOOMED) == 0) 1232216893Srmacklem error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); 1233216893Srmacklem else 1234216893Srmacklem error = EPERM; 1235191783Srmacklem if (ndp->ni_dvp == vp) 1236191783Srmacklem vrele(ndp->ni_dvp); 1237191783Srmacklem else 1238191783Srmacklem vput(ndp->ni_dvp); 1239224082Szack NFSVOPUNLOCK(vp, 0); 1240191783Srmacklem } else { 1241191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1242191783Srmacklem vrele(ndp->ni_dvp); 1243191783Srmacklem else 1244191783Srmacklem vput(ndp->ni_dvp); 1245191783Srmacklem if (ndp->ni_vp) 1246191783Srmacklem vrele(ndp->ni_vp); 1247191783Srmacklem } 1248191783Srmacklem nfsvno_relpathbuf(ndp); 1249224086Szack NFSEXITCODE(error); 1250191783Srmacklem return (error); 1251191783Srmacklem} 1252191783Srmacklem 1253191783Srmacklem/* 1254191783Srmacklem * Do the fsync() appropriate for the commit. 1255191783Srmacklem */ 1256191783Srmacklemint 1257191783Srmacklemnfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, 1258191783Srmacklem struct thread *td) 1259191783Srmacklem{ 1260191783Srmacklem int error = 0; 1261191783Srmacklem 1262229827Srmacklem /* 1263229827Srmacklem * RFC 1813 3.3.21: if count is 0, a flush from offset to the end of 1264229827Srmacklem * file is done. At this time VOP_FSYNC does not accept offset and 1265229827Srmacklem * byte count parameters so call VOP_FSYNC the whole file for now. 1266229827Srmacklem * The same is true for NFSv4: RFC 3530 Sec. 14.2.3. 1267229827Srmacklem */ 1268229827Srmacklem if (cnt == 0 || cnt > MAX_COMMIT_COUNT) { 1269191783Srmacklem /* 1270191783Srmacklem * Give up and do the whole thing 1271191783Srmacklem */ 1272191783Srmacklem if (vp->v_object && 1273191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1274191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1275191783Srmacklem vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC); 1276191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1277191783Srmacklem } 1278191783Srmacklem error = VOP_FSYNC(vp, MNT_WAIT, td); 1279191783Srmacklem } else { 1280191783Srmacklem /* 1281191783Srmacklem * Locate and synchronously write any buffers that fall 1282191783Srmacklem * into the requested range. Note: we are assuming that 1283191783Srmacklem * f_iosize is a power of 2. 1284191783Srmacklem */ 1285191783Srmacklem int iosize = vp->v_mount->mnt_stat.f_iosize; 1286191783Srmacklem int iomask = iosize - 1; 1287191783Srmacklem struct bufobj *bo; 1288191783Srmacklem daddr_t lblkno; 1289191783Srmacklem 1290191783Srmacklem /* 1291191783Srmacklem * Align to iosize boundry, super-align to page boundry. 1292191783Srmacklem */ 1293191783Srmacklem if (off & iomask) { 1294191783Srmacklem cnt += off & iomask; 1295191783Srmacklem off &= ~(u_quad_t)iomask; 1296191783Srmacklem } 1297191783Srmacklem if (off & PAGE_MASK) { 1298191783Srmacklem cnt += off & PAGE_MASK; 1299191783Srmacklem off &= ~(u_quad_t)PAGE_MASK; 1300191783Srmacklem } 1301191783Srmacklem lblkno = off / iosize; 1302191783Srmacklem 1303191783Srmacklem if (vp->v_object && 1304191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1305191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1306218345Salc vm_object_page_clean(vp->v_object, off, off + cnt, 1307218345Salc OBJPC_SYNC); 1308191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1309191783Srmacklem } 1310191783Srmacklem 1311191783Srmacklem bo = &vp->v_bufobj; 1312191783Srmacklem BO_LOCK(bo); 1313191783Srmacklem while (cnt > 0) { 1314191783Srmacklem struct buf *bp; 1315191783Srmacklem 1316191783Srmacklem /* 1317191783Srmacklem * If we have a buffer and it is marked B_DELWRI we 1318191783Srmacklem * have to lock and write it. Otherwise the prior 1319191783Srmacklem * write is assumed to have already been committed. 1320191783Srmacklem * 1321191783Srmacklem * gbincore() can return invalid buffers now so we 1322191783Srmacklem * have to check that bit as well (though B_DELWRI 1323191783Srmacklem * should not be set if B_INVAL is set there could be 1324191783Srmacklem * a race here since we haven't locked the buffer). 1325191783Srmacklem */ 1326191783Srmacklem if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { 1327191783Srmacklem if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | 1328191783Srmacklem LK_INTERLOCK, BO_MTX(bo)) == ENOLCK) { 1329191783Srmacklem BO_LOCK(bo); 1330191783Srmacklem continue; /* retry */ 1331191783Srmacklem } 1332191783Srmacklem if ((bp->b_flags & (B_DELWRI|B_INVAL)) == 1333191783Srmacklem B_DELWRI) { 1334191783Srmacklem bremfree(bp); 1335191783Srmacklem bp->b_flags &= ~B_ASYNC; 1336191783Srmacklem bwrite(bp); 1337191783Srmacklem ++nfs_commit_miss; 1338191783Srmacklem } else 1339191783Srmacklem BUF_UNLOCK(bp); 1340191783Srmacklem BO_LOCK(bo); 1341191783Srmacklem } 1342191783Srmacklem ++nfs_commit_blks; 1343191783Srmacklem if (cnt < iosize) 1344191783Srmacklem break; 1345191783Srmacklem cnt -= iosize; 1346191783Srmacklem ++lblkno; 1347191783Srmacklem } 1348191783Srmacklem BO_UNLOCK(bo); 1349191783Srmacklem } 1350224086Szack NFSEXITCODE(error); 1351191783Srmacklem return (error); 1352191783Srmacklem} 1353191783Srmacklem 1354191783Srmacklem/* 1355191783Srmacklem * Statfs vnode op. 1356191783Srmacklem */ 1357191783Srmacklemint 1358191990Sattilionfsvno_statfs(struct vnode *vp, struct statfs *sf) 1359191783Srmacklem{ 1360221517Srmacklem int error; 1361191783Srmacklem 1362221517Srmacklem error = VFS_STATFS(vp->v_mount, sf); 1363221517Srmacklem if (error == 0) { 1364221517Srmacklem /* 1365221517Srmacklem * Since NFS handles these values as unsigned on the 1366221517Srmacklem * wire, there is no way to represent negative values, 1367221517Srmacklem * so set them to 0. Without this, they will appear 1368221517Srmacklem * to be very large positive values for clients like 1369221517Srmacklem * Solaris10. 1370221517Srmacklem */ 1371221517Srmacklem if (sf->f_bavail < 0) 1372221517Srmacklem sf->f_bavail = 0; 1373221517Srmacklem if (sf->f_ffree < 0) 1374221517Srmacklem sf->f_ffree = 0; 1375221517Srmacklem } 1376224086Szack NFSEXITCODE(error); 1377221517Srmacklem return (error); 1378191783Srmacklem} 1379191783Srmacklem 1380191783Srmacklem/* 1381191783Srmacklem * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1382191783Srmacklem * must handle nfsrv_opencheck() calls after any other access checks. 1383191783Srmacklem */ 1384191783Srmacklemvoid 1385191783Srmacklemnfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1386191783Srmacklem nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1387199616Srmacklem int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, 1388191783Srmacklem NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p, 1389191783Srmacklem struct nfsexstuff *exp, struct vnode **vpp) 1390191783Srmacklem{ 1391191783Srmacklem struct vnode *vp = NULL; 1392191783Srmacklem u_quad_t tempsize; 1393191783Srmacklem struct nfsexstuff nes; 1394191783Srmacklem 1395191783Srmacklem if (ndp->ni_vp == NULL) 1396191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1397191783Srmacklem stateidp, stp, NULL, nd, p, nd->nd_repstat); 1398191783Srmacklem if (!nd->nd_repstat) { 1399191783Srmacklem if (ndp->ni_vp == NULL) { 1400191783Srmacklem vrele(ndp->ni_startdir); 1401191783Srmacklem nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1402191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1403191783Srmacklem vput(ndp->ni_dvp); 1404191783Srmacklem nfsvno_relpathbuf(ndp); 1405191783Srmacklem if (!nd->nd_repstat) { 1406191783Srmacklem if (*exclusive_flagp) { 1407191783Srmacklem *exclusive_flagp = 0; 1408191783Srmacklem NFSVNO_ATTRINIT(nvap); 1409199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 1410199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 1411191783Srmacklem nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1412191783Srmacklem &nvap->na_vattr, cred); 1413191783Srmacklem } else { 1414191783Srmacklem nfsrv_fixattr(nd, ndp->ni_vp, nvap, 1415191783Srmacklem aclp, p, attrbitp, exp); 1416191783Srmacklem } 1417191783Srmacklem } 1418191783Srmacklem vp = ndp->ni_vp; 1419191783Srmacklem } else { 1420191783Srmacklem if (ndp->ni_startdir) 1421191783Srmacklem vrele(ndp->ni_startdir); 1422191783Srmacklem nfsvno_relpathbuf(ndp); 1423191783Srmacklem vp = ndp->ni_vp; 1424191783Srmacklem if (create == NFSV4OPEN_CREATE) { 1425191783Srmacklem if (ndp->ni_dvp == vp) 1426191783Srmacklem vrele(ndp->ni_dvp); 1427191783Srmacklem else 1428191783Srmacklem vput(ndp->ni_dvp); 1429191783Srmacklem } 1430191783Srmacklem if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 1431191783Srmacklem if (ndp->ni_cnd.cn_flags & RDONLY) 1432191783Srmacklem NFSVNO_SETEXRDONLY(&nes); 1433191783Srmacklem else 1434191783Srmacklem NFSVNO_EXINIT(&nes); 1435191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, 1436200999Srmacklem VWRITE, cred, &nes, p, 1437200999Srmacklem NFSACCCHK_NOOVERRIDE, 1438200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1439191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1440191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1441191783Srmacklem if (!nd->nd_repstat) { 1442191783Srmacklem tempsize = nvap->na_size; 1443191783Srmacklem NFSVNO_ATTRINIT(nvap); 1444191783Srmacklem nvap->na_size = tempsize; 1445191783Srmacklem nd->nd_repstat = VOP_SETATTR(vp, 1446191783Srmacklem &nvap->na_vattr, cred); 1447191783Srmacklem } 1448191783Srmacklem } else if (vp->v_type == VREG) { 1449191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1450191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1451191783Srmacklem } 1452191783Srmacklem } 1453191783Srmacklem } else { 1454191783Srmacklem if (ndp->ni_cnd.cn_flags & HASBUF) 1455191783Srmacklem nfsvno_relpathbuf(ndp); 1456191783Srmacklem if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) { 1457191783Srmacklem vrele(ndp->ni_startdir); 1458191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1459191783Srmacklem vrele(ndp->ni_dvp); 1460191783Srmacklem else 1461191783Srmacklem vput(ndp->ni_dvp); 1462191783Srmacklem if (ndp->ni_vp) 1463191783Srmacklem vput(ndp->ni_vp); 1464191783Srmacklem } 1465191783Srmacklem } 1466191783Srmacklem *vpp = vp; 1467224086Szack 1468224086Szack NFSEXITCODE2(0, nd); 1469191783Srmacklem} 1470191783Srmacklem 1471191783Srmacklem/* 1472191783Srmacklem * Updates the file rev and sets the mtime and ctime 1473191783Srmacklem * to the current clock time, returning the va_filerev and va_Xtime 1474191783Srmacklem * values. 1475260174Srmacklem * Return ESTALE to indicate the vnode is VI_DOOMED. 1476191783Srmacklem */ 1477260174Srmacklemint 1478191783Srmacklemnfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 1479191783Srmacklem struct ucred *cred, struct thread *p) 1480191783Srmacklem{ 1481191783Srmacklem struct vattr va; 1482191783Srmacklem 1483191783Srmacklem VATTR_NULL(&va); 1484247502Sjhb vfs_timestamp(&va.va_mtime); 1485260174Srmacklem if (NFSVOPISLOCKED(vp) != LK_EXCLUSIVE) { 1486260174Srmacklem NFSVOPLOCK(vp, LK_UPGRADE | LK_RETRY); 1487260174Srmacklem if ((vp->v_iflag & VI_DOOMED) != 0) 1488260174Srmacklem return (ESTALE); 1489260174Srmacklem } 1490191783Srmacklem (void) VOP_SETATTR(vp, &va, cred); 1491216693Srmacklem (void) nfsvno_getattr(vp, nvap, cred, p, 1); 1492260174Srmacklem return (0); 1493191783Srmacklem} 1494191783Srmacklem 1495191783Srmacklem/* 1496191783Srmacklem * Glue routine to nfsv4_fillattr(). 1497191783Srmacklem */ 1498191783Srmacklemint 1499220645Srmacklemnfsvno_fillattr(struct nfsrv_descript *nd, struct mount *mp, struct vnode *vp, 1500191783Srmacklem struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 1501220648Srmacklem struct ucred *cred, struct thread *p, int isdgram, int reterr, 1502220648Srmacklem int supports_nfsv4acls, int at_root, uint64_t mounted_on_fileno) 1503191783Srmacklem{ 1504191783Srmacklem int error; 1505191783Srmacklem 1506220645Srmacklem error = nfsv4_fillattr(nd, mp, vp, NULL, &nvap->na_vattr, fhp, rderror, 1507220648Srmacklem attrbitp, cred, p, isdgram, reterr, supports_nfsv4acls, at_root, 1508220648Srmacklem mounted_on_fileno); 1509224086Szack NFSEXITCODE2(0, nd); 1510191783Srmacklem return (error); 1511191783Srmacklem} 1512191783Srmacklem 1513191783Srmacklem/* Since the Readdir vnode ops vary, put the entire functions in here. */ 1514191783Srmacklem/* 1515191783Srmacklem * nfs readdir service 1516191783Srmacklem * - mallocs what it thinks is enough to read 1517191783Srmacklem * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 1518206170Srmacklem * - calls VOP_READDIR() 1519191783Srmacklem * - loops around building the reply 1520191783Srmacklem * if the output generated exceeds count break out of loop 1521191783Srmacklem * The NFSM_CLGET macro is used here so that the reply will be packed 1522191783Srmacklem * tightly in mbuf clusters. 1523191783Srmacklem * - it trims out records with d_fileno == 0 1524191783Srmacklem * this doesn't matter for Unix clients, but they might confuse clients 1525191783Srmacklem * for other os'. 1526191783Srmacklem * - it trims out records with d_type == DT_WHT 1527191783Srmacklem * these cannot be seen through NFS (unless we extend the protocol) 1528191783Srmacklem * The alternate call nfsrvd_readdirplus() does lookups as well. 1529191783Srmacklem * PS: The NFS protocol spec. does not clarify what the "count" byte 1530191783Srmacklem * argument is a count of.. just name strings and file id's or the 1531191783Srmacklem * entire reply rpc or ... 1532191783Srmacklem * I tried just file name and id sizes and it confused the Sun client, 1533191783Srmacklem * so I am using the full rpc size now. The "paranoia.." comment refers 1534191783Srmacklem * to including the status longwords that are not a part of the dir. 1535191783Srmacklem * "entry" structures, but are in the rpc. 1536191783Srmacklem */ 1537191783Srmacklemint 1538191783Srmacklemnfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 1539191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1540191783Srmacklem{ 1541191783Srmacklem struct dirent *dp; 1542191783Srmacklem u_int32_t *tl; 1543191783Srmacklem int dirlen; 1544191783Srmacklem char *cpos, *cend, *rbuf; 1545191783Srmacklem struct nfsvattr at; 1546191783Srmacklem int nlen, error = 0, getret = 1; 1547191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies; 1548191783Srmacklem u_int64_t off, toff, verf; 1549191783Srmacklem u_long *cookies = NULL, *cookiep; 1550191783Srmacklem struct uio io; 1551191783Srmacklem struct iovec iv; 1552216691Srmacklem int not_zfs; 1553191783Srmacklem 1554191783Srmacklem if (nd->nd_repstat) { 1555191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1556224086Szack goto out; 1557191783Srmacklem } 1558191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1559191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1560191783Srmacklem off = fxdr_unsigned(u_quad_t, *tl++); 1561191783Srmacklem } else { 1562191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1563191783Srmacklem off = fxdr_hyper(tl); 1564191783Srmacklem tl += 2; 1565191783Srmacklem verf = fxdr_hyper(tl); 1566191783Srmacklem tl += 2; 1567191783Srmacklem } 1568191783Srmacklem toff = off; 1569191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1570206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1571191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1572191783Srmacklem siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1573191783Srmacklem fullsiz = siz; 1574191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1575191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, 1576216693Srmacklem p, 1); 1577191783Srmacklem#if 0 1578191783Srmacklem /* 1579191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1580191783Srmacklem * since it is not supposed to change when entries are 1581191783Srmacklem * removed/added unless that offset cookies returned to 1582191783Srmacklem * the client are no longer valid. 1583191783Srmacklem */ 1584191783Srmacklem if (!nd->nd_repstat && toff && verf != at.na_filerev) 1585191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1586191783Srmacklem#endif 1587191783Srmacklem } 1588250060Sdes if (!nd->nd_repstat && vp->v_type != VDIR) 1589250060Sdes nd->nd_repstat = NFSERR_NOTDIR; 1590206170Srmacklem if (nd->nd_repstat == 0 && cnt == 0) { 1591206170Srmacklem if (nd->nd_flag & ND_NFSV2) 1592206170Srmacklem /* NFSv2 does not have NFSERR_TOOSMALL */ 1593206170Srmacklem nd->nd_repstat = EPERM; 1594206170Srmacklem else 1595206170Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1596206170Srmacklem } 1597191783Srmacklem if (!nd->nd_repstat) 1598200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1599191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1600200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1601191783Srmacklem if (nd->nd_repstat) { 1602191783Srmacklem vput(vp); 1603191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1604191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1605224086Szack goto out; 1606191783Srmacklem } 1607216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1608191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1609191783Srmacklemagain: 1610191783Srmacklem eofflag = 0; 1611191783Srmacklem if (cookies) { 1612191783Srmacklem free((caddr_t)cookies, M_TEMP); 1613191783Srmacklem cookies = NULL; 1614191783Srmacklem } 1615191783Srmacklem 1616191783Srmacklem iv.iov_base = rbuf; 1617191783Srmacklem iv.iov_len = siz; 1618191783Srmacklem io.uio_iov = &iv; 1619191783Srmacklem io.uio_iovcnt = 1; 1620191783Srmacklem io.uio_offset = (off_t)off; 1621191783Srmacklem io.uio_resid = siz; 1622191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1623191783Srmacklem io.uio_rw = UIO_READ; 1624191783Srmacklem io.uio_td = NULL; 1625191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1626191783Srmacklem &cookies); 1627191783Srmacklem off = (u_int64_t)io.uio_offset; 1628191783Srmacklem if (io.uio_resid) 1629191783Srmacklem siz -= io.uio_resid; 1630191783Srmacklem 1631191783Srmacklem if (!cookies && !nd->nd_repstat) 1632191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1633191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1634216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1635191783Srmacklem if (!nd->nd_repstat) 1636191783Srmacklem nd->nd_repstat = getret; 1637191783Srmacklem } 1638191783Srmacklem 1639191783Srmacklem /* 1640191783Srmacklem * Handles the failed cases. nd->nd_repstat == 0 past here. 1641191783Srmacklem */ 1642191783Srmacklem if (nd->nd_repstat) { 1643216692Srmacklem vput(vp); 1644191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1645191783Srmacklem if (cookies) 1646191783Srmacklem free((caddr_t)cookies, M_TEMP); 1647191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1648191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1649224086Szack goto out; 1650191783Srmacklem } 1651191783Srmacklem /* 1652191783Srmacklem * If nothing read, return eof 1653191783Srmacklem * rpc reply 1654191783Srmacklem */ 1655191783Srmacklem if (siz == 0) { 1656216692Srmacklem vput(vp); 1657191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1658191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1659191783Srmacklem } else { 1660191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1661191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1662191783Srmacklem txdr_hyper(at.na_filerev, tl); 1663191783Srmacklem tl += 2; 1664191783Srmacklem } 1665191783Srmacklem *tl++ = newnfs_false; 1666191783Srmacklem *tl = newnfs_true; 1667191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1668191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1669224086Szack goto out; 1670191783Srmacklem } 1671191783Srmacklem 1672191783Srmacklem /* 1673191783Srmacklem * Check for degenerate cases of nothing useful read. 1674191783Srmacklem * If so go try again 1675191783Srmacklem */ 1676191783Srmacklem cpos = rbuf; 1677191783Srmacklem cend = rbuf + siz; 1678191783Srmacklem dp = (struct dirent *)cpos; 1679191783Srmacklem cookiep = cookies; 1680191783Srmacklem 1681191783Srmacklem /* 1682191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1683191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1684191783Srmacklem * skip over the records that precede the requested offset. This 1685191783Srmacklem * requires the assumption that file offset cookies monotonically 1686191783Srmacklem * increase. 1687216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1688216691Srmacklem * this is not done when ZFS is the file system. 1689191783Srmacklem */ 1690191783Srmacklem while (cpos < cend && ncookies > 0 && 1691191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1692216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff))) { 1693191783Srmacklem cpos += dp->d_reclen; 1694191783Srmacklem dp = (struct dirent *)cpos; 1695191783Srmacklem cookiep++; 1696191783Srmacklem ncookies--; 1697191783Srmacklem } 1698191783Srmacklem if (cpos >= cend || ncookies == 0) { 1699191783Srmacklem siz = fullsiz; 1700191783Srmacklem toff = off; 1701191783Srmacklem goto again; 1702191783Srmacklem } 1703216692Srmacklem vput(vp); 1704191783Srmacklem 1705191783Srmacklem /* 1706191783Srmacklem * dirlen is the size of the reply, including all XDR and must 1707191783Srmacklem * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 1708191783Srmacklem * if the XDR should be included in "count", but to be safe, we do. 1709191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now.) 1710191783Srmacklem */ 1711191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1712191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1713191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1714191783Srmacklem txdr_hyper(at.na_filerev, tl); 1715191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1716191783Srmacklem } else { 1717191783Srmacklem dirlen = 2 * NFSX_UNSIGNED; 1718191783Srmacklem } 1719191783Srmacklem 1720191783Srmacklem /* Loop through the records and build reply */ 1721191783Srmacklem while (cpos < cend && ncookies > 0) { 1722191783Srmacklem nlen = dp->d_namlen; 1723191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1724191783Srmacklem nlen <= NFS_MAXNAMLEN) { 1725191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1726191783Srmacklem dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1727191783Srmacklem else 1728191783Srmacklem dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1729191783Srmacklem if (dirlen > cnt) { 1730191783Srmacklem eofflag = 0; 1731191783Srmacklem break; 1732191783Srmacklem } 1733191783Srmacklem 1734191783Srmacklem /* 1735191783Srmacklem * Build the directory record xdr from 1736191783Srmacklem * the dirent entry. 1737191783Srmacklem */ 1738191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1739191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1740191783Srmacklem *tl++ = newnfs_true; 1741191783Srmacklem *tl++ = 0; 1742191783Srmacklem } else { 1743191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1744191783Srmacklem *tl++ = newnfs_true; 1745191783Srmacklem } 1746191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1747191783Srmacklem (void) nfsm_strtom(nd, dp->d_name, nlen); 1748191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1749191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1750191783Srmacklem *tl++ = 0; 1751191783Srmacklem } else 1752191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1753191783Srmacklem *tl = txdr_unsigned(*cookiep); 1754191783Srmacklem } 1755191783Srmacklem cpos += dp->d_reclen; 1756191783Srmacklem dp = (struct dirent *)cpos; 1757191783Srmacklem cookiep++; 1758191783Srmacklem ncookies--; 1759191783Srmacklem } 1760191783Srmacklem if (cpos < cend) 1761191783Srmacklem eofflag = 0; 1762191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1763191783Srmacklem *tl++ = newnfs_false; 1764191783Srmacklem if (eofflag) 1765191783Srmacklem *tl = newnfs_true; 1766191783Srmacklem else 1767191783Srmacklem *tl = newnfs_false; 1768191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1769191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1770224086Szack 1771224086Szackout: 1772224086Szack NFSEXITCODE2(0, nd); 1773191783Srmacklem return (0); 1774191783Srmacklemnfsmout: 1775191783Srmacklem vput(vp); 1776224086Szack NFSEXITCODE2(error, nd); 1777191783Srmacklem return (error); 1778191783Srmacklem} 1779191783Srmacklem 1780191783Srmacklem/* 1781191783Srmacklem * Readdirplus for V3 and Readdir for V4. 1782191783Srmacklem */ 1783191783Srmacklemint 1784191783Srmacklemnfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 1785191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1786191783Srmacklem{ 1787191783Srmacklem struct dirent *dp; 1788191783Srmacklem u_int32_t *tl; 1789191783Srmacklem int dirlen; 1790191783Srmacklem char *cpos, *cend, *rbuf; 1791191783Srmacklem struct vnode *nvp; 1792191783Srmacklem fhandle_t nfh; 1793191783Srmacklem struct nfsvattr nva, at, *nvap = &nva; 1794191783Srmacklem struct mbuf *mb0, *mb1; 1795191783Srmacklem struct nfsreferral *refp; 1796199715Srmacklem int nlen, r, error = 0, getret = 1, usevget = 1; 1797191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 1798191783Srmacklem caddr_t bpos0, bpos1; 1799191783Srmacklem u_int64_t off, toff, verf; 1800191783Srmacklem u_long *cookies = NULL, *cookiep; 1801191783Srmacklem nfsattrbit_t attrbits, rderrbits, savbits; 1802191783Srmacklem struct uio io; 1803191783Srmacklem struct iovec iv; 1804199715Srmacklem struct componentname cn; 1805220648Srmacklem int at_root, needs_unbusy, not_zfs, supports_nfsv4acls; 1806220645Srmacklem struct mount *mp, *new_mp; 1807220645Srmacklem uint64_t mounted_on_fileno; 1808191783Srmacklem 1809191783Srmacklem if (nd->nd_repstat) { 1810191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1811224086Szack goto out; 1812191783Srmacklem } 1813191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 1814191783Srmacklem off = fxdr_hyper(tl); 1815191783Srmacklem toff = off; 1816191783Srmacklem tl += 2; 1817191783Srmacklem verf = fxdr_hyper(tl); 1818191783Srmacklem tl += 2; 1819191783Srmacklem siz = fxdr_unsigned(int, *tl++); 1820191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1821191783Srmacklem 1822191783Srmacklem /* 1823191783Srmacklem * Use the server's maximum data transfer size as the upper bound 1824191783Srmacklem * on reply datalen. 1825191783Srmacklem */ 1826206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1827191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1828191783Srmacklem 1829191783Srmacklem /* 1830191783Srmacklem * siz is a "hint" of how much directory information (name, fileid, 1831191783Srmacklem * cookie) should be in the reply. At least one client "hints" 0, 1832191783Srmacklem * so I set it to cnt for that case. I also round it up to the 1833191783Srmacklem * next multiple of DIRBLKSIZ. 1834191783Srmacklem */ 1835206170Srmacklem if (siz <= 0) 1836191783Srmacklem siz = cnt; 1837191783Srmacklem siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1838191783Srmacklem 1839191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1840191783Srmacklem error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1841191783Srmacklem if (error) 1842191783Srmacklem goto nfsmout; 1843191783Srmacklem NFSSET_ATTRBIT(&savbits, &attrbits); 1844191783Srmacklem NFSCLRNOTFILLABLE_ATTRBIT(&attrbits); 1845191783Srmacklem NFSZERO_ATTRBIT(&rderrbits); 1846191783Srmacklem NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 1847191783Srmacklem } else { 1848191783Srmacklem NFSZERO_ATTRBIT(&attrbits); 1849191783Srmacklem } 1850191783Srmacklem fullsiz = siz; 1851216693Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1852191783Srmacklem if (!nd->nd_repstat) { 1853191783Srmacklem if (off && verf != at.na_filerev) { 1854191783Srmacklem /* 1855191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1856191783Srmacklem * since it is not supposed to change when entries are 1857191783Srmacklem * removed/added unless that offset cookies returned to 1858191783Srmacklem * the client are no longer valid. 1859191783Srmacklem */ 1860191783Srmacklem#if 0 1861191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1862191783Srmacklem nd->nd_repstat = NFSERR_NOTSAME; 1863191783Srmacklem } else { 1864191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1865191783Srmacklem } 1866191783Srmacklem#endif 1867191783Srmacklem } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) { 1868191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1869191783Srmacklem } 1870191783Srmacklem } 1871191783Srmacklem if (!nd->nd_repstat && vp->v_type != VDIR) 1872191783Srmacklem nd->nd_repstat = NFSERR_NOTDIR; 1873191783Srmacklem if (!nd->nd_repstat && cnt == 0) 1874191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1875191783Srmacklem if (!nd->nd_repstat) 1876200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1877191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1878200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1879191783Srmacklem if (nd->nd_repstat) { 1880191783Srmacklem vput(vp); 1881191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1882191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1883224086Szack goto out; 1884191783Srmacklem } 1885216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1886191783Srmacklem 1887191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1888191783Srmacklemagain: 1889191783Srmacklem eofflag = 0; 1890191783Srmacklem if (cookies) { 1891191783Srmacklem free((caddr_t)cookies, M_TEMP); 1892191783Srmacklem cookies = NULL; 1893191783Srmacklem } 1894191783Srmacklem 1895191783Srmacklem iv.iov_base = rbuf; 1896191783Srmacklem iv.iov_len = siz; 1897191783Srmacklem io.uio_iov = &iv; 1898191783Srmacklem io.uio_iovcnt = 1; 1899191783Srmacklem io.uio_offset = (off_t)off; 1900191783Srmacklem io.uio_resid = siz; 1901191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1902191783Srmacklem io.uio_rw = UIO_READ; 1903191783Srmacklem io.uio_td = NULL; 1904191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1905191783Srmacklem &cookies); 1906191783Srmacklem off = (u_int64_t)io.uio_offset; 1907191783Srmacklem if (io.uio_resid) 1908191783Srmacklem siz -= io.uio_resid; 1909191783Srmacklem 1910216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1911191783Srmacklem 1912191783Srmacklem if (!cookies && !nd->nd_repstat) 1913191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1914191783Srmacklem if (!nd->nd_repstat) 1915191783Srmacklem nd->nd_repstat = getret; 1916191783Srmacklem if (nd->nd_repstat) { 1917199715Srmacklem vput(vp); 1918191783Srmacklem if (cookies) 1919191783Srmacklem free((caddr_t)cookies, M_TEMP); 1920191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1921191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1922191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1923224086Szack goto out; 1924191783Srmacklem } 1925191783Srmacklem /* 1926191783Srmacklem * If nothing read, return eof 1927191783Srmacklem * rpc reply 1928191783Srmacklem */ 1929191783Srmacklem if (siz == 0) { 1930199715Srmacklem vput(vp); 1931191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1932191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1933191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1934191783Srmacklem txdr_hyper(at.na_filerev, tl); 1935191783Srmacklem tl += 2; 1936191783Srmacklem *tl++ = newnfs_false; 1937191783Srmacklem *tl = newnfs_true; 1938191783Srmacklem free((caddr_t)cookies, M_TEMP); 1939191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1940224086Szack goto out; 1941191783Srmacklem } 1942191783Srmacklem 1943191783Srmacklem /* 1944191783Srmacklem * Check for degenerate cases of nothing useful read. 1945191783Srmacklem * If so go try again 1946191783Srmacklem */ 1947191783Srmacklem cpos = rbuf; 1948191783Srmacklem cend = rbuf + siz; 1949191783Srmacklem dp = (struct dirent *)cpos; 1950191783Srmacklem cookiep = cookies; 1951191783Srmacklem 1952191783Srmacklem /* 1953191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1954191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1955191783Srmacklem * skip over the records that precede the requested offset. This 1956191783Srmacklem * requires the assumption that file offset cookies monotonically 1957191783Srmacklem * increase. 1958216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1959216691Srmacklem * this is not done when ZFS is the file system. 1960191783Srmacklem */ 1961191783Srmacklem while (cpos < cend && ncookies > 0 && 1962191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1963216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff) || 1964191783Srmacklem ((nd->nd_flag & ND_NFSV4) && 1965191783Srmacklem ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 1966191783Srmacklem (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 1967191783Srmacklem cpos += dp->d_reclen; 1968191783Srmacklem dp = (struct dirent *)cpos; 1969191783Srmacklem cookiep++; 1970191783Srmacklem ncookies--; 1971191783Srmacklem } 1972191783Srmacklem if (cpos >= cend || ncookies == 0) { 1973191783Srmacklem siz = fullsiz; 1974191783Srmacklem toff = off; 1975191783Srmacklem goto again; 1976191783Srmacklem } 1977217176Srmacklem 1978217176Srmacklem /* 1979217176Srmacklem * Busy the file system so that the mount point won't go away 1980217176Srmacklem * and, as such, VFS_VGET() can be used safely. 1981217176Srmacklem */ 1982217176Srmacklem mp = vp->v_mount; 1983217176Srmacklem vfs_ref(mp); 1984224082Szack NFSVOPUNLOCK(vp, 0); 1985217176Srmacklem nd->nd_repstat = vfs_busy(mp, 0); 1986217176Srmacklem vfs_rel(mp); 1987217176Srmacklem if (nd->nd_repstat != 0) { 1988217176Srmacklem vrele(vp); 1989217176Srmacklem free(cookies, M_TEMP); 1990217176Srmacklem free(rbuf, M_TEMP); 1991217176Srmacklem if (nd->nd_flag & ND_NFSV3) 1992217176Srmacklem nfsrv_postopattr(nd, getret, &at); 1993224086Szack goto out; 1994217176Srmacklem } 1995191783Srmacklem 1996191783Srmacklem /* 1997260173Srmacklem * Check to see if entries in this directory can be safely acquired 1998260173Srmacklem * via VFS_VGET() or if a switch to VOP_LOOKUP() is required. 1999260173Srmacklem * ZFS snapshot directories need VOP_LOOKUP(), so that any 2000260173Srmacklem * automount of the snapshot directory that is required will 2001260173Srmacklem * be done. 2002260173Srmacklem * This needs to be done here for NFSv4, since NFSv4 never does 2003260173Srmacklem * a VFS_VGET() for "." or "..". 2004260173Srmacklem */ 2005260173Srmacklem if (not_zfs == 0) { 2006260173Srmacklem r = VFS_VGET(mp, at.na_fileid, LK_SHARED, &nvp); 2007260173Srmacklem if (r == EOPNOTSUPP) { 2008260173Srmacklem usevget = 0; 2009260173Srmacklem cn.cn_nameiop = LOOKUP; 2010260173Srmacklem cn.cn_lkflags = LK_SHARED | LK_RETRY; 2011260173Srmacklem cn.cn_cred = nd->nd_cred; 2012260173Srmacklem cn.cn_thread = p; 2013260173Srmacklem } else if (r == 0) 2014260173Srmacklem vput(nvp); 2015260173Srmacklem } 2016260173Srmacklem 2017260173Srmacklem /* 2018191783Srmacklem * Save this position, in case there is an error before one entry 2019191783Srmacklem * is created. 2020191783Srmacklem */ 2021191783Srmacklem mb0 = nd->nd_mb; 2022191783Srmacklem bpos0 = nd->nd_bpos; 2023191783Srmacklem 2024191783Srmacklem /* 2025191783Srmacklem * Fill in the first part of the reply. 2026191783Srmacklem * dirlen is the reply length in bytes and cannot exceed cnt. 2027191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now, 2028191783Srmacklem * so we recognize when we have exceeded cnt.) 2029191783Srmacklem */ 2030191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 2031191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 2032191783Srmacklem nfsrv_postopattr(nd, getret, &at); 2033191783Srmacklem } else { 2034191783Srmacklem dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 2035191783Srmacklem } 2036191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2037191783Srmacklem txdr_hyper(at.na_filerev, tl); 2038191783Srmacklem 2039191783Srmacklem /* 2040191783Srmacklem * Save this position, in case there is an empty reply needed. 2041191783Srmacklem */ 2042191783Srmacklem mb1 = nd->nd_mb; 2043191783Srmacklem bpos1 = nd->nd_bpos; 2044191783Srmacklem 2045191783Srmacklem /* Loop through the records and build reply */ 2046191783Srmacklem entrycnt = 0; 2047191783Srmacklem while (cpos < cend && ncookies > 0 && dirlen < cnt) { 2048191783Srmacklem nlen = dp->d_namlen; 2049191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 2050191783Srmacklem nlen <= NFS_MAXNAMLEN && 2051191783Srmacklem ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 2052191783Srmacklem (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 2053191783Srmacklem || (nlen == 1 && dp->d_name[0] != '.'))) { 2054191783Srmacklem /* 2055191783Srmacklem * Save the current position in the reply, in case 2056191783Srmacklem * this entry exceeds cnt. 2057191783Srmacklem */ 2058191783Srmacklem mb1 = nd->nd_mb; 2059191783Srmacklem bpos1 = nd->nd_bpos; 2060191783Srmacklem 2061191783Srmacklem /* 2062191783Srmacklem * For readdir_and_lookup get the vnode using 2063191783Srmacklem * the file number. 2064191783Srmacklem */ 2065191783Srmacklem nvp = NULL; 2066191783Srmacklem refp = NULL; 2067191783Srmacklem r = 0; 2068220645Srmacklem at_root = 0; 2069220645Srmacklem needs_unbusy = 0; 2070220645Srmacklem new_mp = mp; 2071220645Srmacklem mounted_on_fileno = (uint64_t)dp->d_fileno; 2072191783Srmacklem if ((nd->nd_flag & ND_NFSV3) || 2073191783Srmacklem NFSNONZERO_ATTRBIT(&savbits)) { 2074191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2075191783Srmacklem refp = nfsv4root_getreferral(NULL, 2076191783Srmacklem vp, dp->d_fileno); 2077199715Srmacklem if (refp == NULL) { 2078199715Srmacklem if (usevget) 2079217176Srmacklem r = VFS_VGET(mp, dp->d_fileno, 2080217176Srmacklem LK_SHARED, &nvp); 2081199715Srmacklem else 2082199715Srmacklem r = EOPNOTSUPP; 2083199715Srmacklem if (r == EOPNOTSUPP) { 2084199715Srmacklem if (usevget) { 2085199715Srmacklem usevget = 0; 2086199715Srmacklem cn.cn_nameiop = LOOKUP; 2087199715Srmacklem cn.cn_lkflags = 2088216700Srmacklem LK_SHARED | 2089199715Srmacklem LK_RETRY; 2090199715Srmacklem cn.cn_cred = 2091199715Srmacklem nd->nd_cred; 2092199715Srmacklem cn.cn_thread = p; 2093199715Srmacklem } 2094199715Srmacklem cn.cn_nameptr = dp->d_name; 2095199715Srmacklem cn.cn_namelen = nlen; 2096199715Srmacklem cn.cn_flags = ISLASTCN | 2097199715Srmacklem NOFOLLOW | LOCKLEAF | 2098199715Srmacklem MPSAFE; 2099199715Srmacklem if (nlen == 2 && 2100199715Srmacklem dp->d_name[0] == '.' && 2101199715Srmacklem dp->d_name[1] == '.') 2102199715Srmacklem cn.cn_flags |= 2103199715Srmacklem ISDOTDOT; 2104224081Szack if (NFSVOPLOCK(vp, LK_SHARED) 2105216692Srmacklem != 0) { 2106216692Srmacklem nd->nd_repstat = EPERM; 2107216692Srmacklem break; 2108216692Srmacklem } 2109214149Srmacklem if ((vp->v_vflag & VV_ROOT) != 0 2110214149Srmacklem && (cn.cn_flags & ISDOTDOT) 2111214149Srmacklem != 0) { 2112214149Srmacklem vref(vp); 2113214149Srmacklem nvp = vp; 2114214149Srmacklem r = 0; 2115220507Srmacklem } else { 2116214149Srmacklem r = VOP_LOOKUP(vp, &nvp, 2117214149Srmacklem &cn); 2118220507Srmacklem if (vp != nvp) 2119224082Szack NFSVOPUNLOCK(vp, 2120220507Srmacklem 0); 2121220507Srmacklem } 2122199715Srmacklem } 2123220645Srmacklem 2124220645Srmacklem /* 2125220645Srmacklem * For NFSv4, check to see if nvp is 2126220645Srmacklem * a mount point and get the mount 2127220645Srmacklem * point vnode, as required. 2128220645Srmacklem */ 2129220645Srmacklem if (r == 0 && 2130220645Srmacklem nfsrv_enable_crossmntpt != 0 && 2131220645Srmacklem (nd->nd_flag & ND_NFSV4) != 0 && 2132220645Srmacklem nvp->v_type == VDIR && 2133220645Srmacklem nvp->v_mountedhere != NULL) { 2134220645Srmacklem new_mp = nvp->v_mountedhere; 2135220645Srmacklem r = vfs_busy(new_mp, 0); 2136220645Srmacklem vput(nvp); 2137220645Srmacklem nvp = NULL; 2138220645Srmacklem if (r == 0) { 2139220645Srmacklem r = VFS_ROOT(new_mp, 2140220645Srmacklem LK_SHARED, &nvp); 2141220645Srmacklem needs_unbusy = 1; 2142220645Srmacklem if (r == 0) 2143220645Srmacklem at_root = 1; 2144220645Srmacklem } 2145220645Srmacklem } 2146199715Srmacklem } 2147191783Srmacklem if (!r) { 2148191783Srmacklem if (refp == NULL && 2149191783Srmacklem ((nd->nd_flag & ND_NFSV3) || 2150191783Srmacklem NFSNONZERO_ATTRBIT(&attrbits))) { 2151191783Srmacklem r = nfsvno_getfh(nvp, &nfh, p); 2152191783Srmacklem if (!r) 2153191783Srmacklem r = nfsvno_getattr(nvp, nvap, 2154216693Srmacklem nd->nd_cred, p, 1); 2155260173Srmacklem if (r == 0 && not_zfs == 0 && 2156260173Srmacklem nfsrv_enable_crossmntpt != 0 && 2157260173Srmacklem (nd->nd_flag & ND_NFSV4) != 0 && 2158260173Srmacklem nvp->v_type == VDIR && 2159260173Srmacklem vp->v_mount != nvp->v_mount) { 2160260173Srmacklem /* 2161260173Srmacklem * For a ZFS snapshot, there is a 2162260173Srmacklem * pseudo mount that does not set 2163260173Srmacklem * v_mountedhere, so it needs to 2164260173Srmacklem * be detected via a different 2165260173Srmacklem * mount structure. 2166260173Srmacklem */ 2167260173Srmacklem at_root = 1; 2168260173Srmacklem if (new_mp == mp) 2169260173Srmacklem new_mp = nvp->v_mount; 2170260173Srmacklem } 2171191783Srmacklem } 2172191783Srmacklem } else { 2173191783Srmacklem nvp = NULL; 2174191783Srmacklem } 2175191783Srmacklem if (r) { 2176191783Srmacklem if (!NFSISSET_ATTRBIT(&attrbits, 2177191783Srmacklem NFSATTRBIT_RDATTRERROR)) { 2178191783Srmacklem if (nvp != NULL) 2179191783Srmacklem vput(nvp); 2180220645Srmacklem if (needs_unbusy != 0) 2181220645Srmacklem vfs_unbusy(new_mp); 2182191783Srmacklem nd->nd_repstat = r; 2183191783Srmacklem break; 2184191783Srmacklem } 2185191783Srmacklem } 2186191783Srmacklem } 2187191783Srmacklem 2188191783Srmacklem /* 2189191783Srmacklem * Build the directory record xdr 2190191783Srmacklem */ 2191191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 2192191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2193191783Srmacklem *tl++ = newnfs_true; 2194191783Srmacklem *tl++ = 0; 2195191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 2196191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2197191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2198191783Srmacklem *tl++ = 0; 2199191783Srmacklem *tl = txdr_unsigned(*cookiep); 2200191783Srmacklem nfsrv_postopattr(nd, 0, nvap); 2201191783Srmacklem dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1); 2202191783Srmacklem dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 2203191783Srmacklem if (nvp != NULL) 2204191783Srmacklem vput(nvp); 2205191783Srmacklem } else { 2206191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2207191783Srmacklem *tl++ = newnfs_true; 2208191783Srmacklem *tl++ = 0; 2209191783Srmacklem *tl = txdr_unsigned(*cookiep); 2210191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2211220648Srmacklem if (nvp != NULL) { 2212220648Srmacklem supports_nfsv4acls = 2213220648Srmacklem nfs_supportsnfsv4acls(nvp); 2214224082Szack NFSVOPUNLOCK(nvp, 0); 2215220648Srmacklem } else 2216220648Srmacklem supports_nfsv4acls = 0; 2217191783Srmacklem if (refp != NULL) { 2218191783Srmacklem dirlen += nfsrv_putreferralattr(nd, 2219191783Srmacklem &savbits, refp, 0, 2220191783Srmacklem &nd->nd_repstat); 2221191783Srmacklem if (nd->nd_repstat) { 2222191783Srmacklem if (nvp != NULL) 2223191783Srmacklem vrele(nvp); 2224220645Srmacklem if (needs_unbusy != 0) 2225220645Srmacklem vfs_unbusy(new_mp); 2226191783Srmacklem break; 2227191783Srmacklem } 2228191783Srmacklem } else if (r) { 2229220645Srmacklem dirlen += nfsvno_fillattr(nd, new_mp, 2230220645Srmacklem nvp, nvap, &nfh, r, &rderrbits, 2231220648Srmacklem nd->nd_cred, p, isdgram, 0, 2232220648Srmacklem supports_nfsv4acls, at_root, 2233220645Srmacklem mounted_on_fileno); 2234191783Srmacklem } else { 2235220645Srmacklem dirlen += nfsvno_fillattr(nd, new_mp, 2236220645Srmacklem nvp, nvap, &nfh, r, &attrbits, 2237220648Srmacklem nd->nd_cred, p, isdgram, 0, 2238220648Srmacklem supports_nfsv4acls, at_root, 2239220645Srmacklem mounted_on_fileno); 2240191783Srmacklem } 2241191783Srmacklem if (nvp != NULL) 2242191783Srmacklem vrele(nvp); 2243191783Srmacklem dirlen += (3 * NFSX_UNSIGNED); 2244191783Srmacklem } 2245220645Srmacklem if (needs_unbusy != 0) 2246220645Srmacklem vfs_unbusy(new_mp); 2247191783Srmacklem if (dirlen <= cnt) 2248191783Srmacklem entrycnt++; 2249191783Srmacklem } 2250191783Srmacklem cpos += dp->d_reclen; 2251191783Srmacklem dp = (struct dirent *)cpos; 2252191783Srmacklem cookiep++; 2253191783Srmacklem ncookies--; 2254191783Srmacklem } 2255216692Srmacklem vrele(vp); 2256217176Srmacklem vfs_unbusy(mp); 2257191783Srmacklem 2258191783Srmacklem /* 2259191783Srmacklem * If dirlen > cnt, we must strip off the last entry. If that 2260191783Srmacklem * results in an empty reply, report NFSERR_TOOSMALL. 2261191783Srmacklem */ 2262191783Srmacklem if (dirlen > cnt || nd->nd_repstat) { 2263191783Srmacklem if (!nd->nd_repstat && entrycnt == 0) 2264191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 2265191783Srmacklem if (nd->nd_repstat) 2266191783Srmacklem newnfs_trimtrailing(nd, mb0, bpos0); 2267191783Srmacklem else 2268191783Srmacklem newnfs_trimtrailing(nd, mb1, bpos1); 2269191783Srmacklem eofflag = 0; 2270191783Srmacklem } else if (cpos < cend) 2271191783Srmacklem eofflag = 0; 2272191783Srmacklem if (!nd->nd_repstat) { 2273191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2274191783Srmacklem *tl++ = newnfs_false; 2275191783Srmacklem if (eofflag) 2276191783Srmacklem *tl = newnfs_true; 2277191783Srmacklem else 2278191783Srmacklem *tl = newnfs_false; 2279191783Srmacklem } 2280191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 2281191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 2282224086Szack 2283224086Szackout: 2284224086Szack NFSEXITCODE2(0, nd); 2285191783Srmacklem return (0); 2286191783Srmacklemnfsmout: 2287191783Srmacklem vput(vp); 2288224086Szack NFSEXITCODE2(error, nd); 2289191783Srmacklem return (error); 2290191783Srmacklem} 2291191783Srmacklem 2292191783Srmacklem/* 2293191783Srmacklem * Get the settable attributes out of the mbuf list. 2294191783Srmacklem * (Return 0 or EBADRPC) 2295191783Srmacklem */ 2296191783Srmacklemint 2297191783Srmacklemnfsrv_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2298191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2299191783Srmacklem{ 2300191783Srmacklem u_int32_t *tl; 2301191783Srmacklem struct nfsv2_sattr *sp; 2302191783Srmacklem int error = 0, toclient = 0; 2303191783Srmacklem 2304191783Srmacklem switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 2305191783Srmacklem case ND_NFSV2: 2306191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2307191783Srmacklem /* 2308191783Srmacklem * Some old clients didn't fill in the high order 16bits. 2309191783Srmacklem * --> check the low order 2 bytes for 0xffff 2310191783Srmacklem */ 2311191783Srmacklem if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 2312191783Srmacklem nvap->na_mode = nfstov_mode(sp->sa_mode); 2313191783Srmacklem if (sp->sa_uid != newnfs_xdrneg1) 2314191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 2315191783Srmacklem if (sp->sa_gid != newnfs_xdrneg1) 2316191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 2317191783Srmacklem if (sp->sa_size != newnfs_xdrneg1) 2318191783Srmacklem nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 2319191783Srmacklem if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 2320191783Srmacklem#ifdef notyet 2321191783Srmacklem fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 2322191783Srmacklem#else 2323191783Srmacklem nvap->na_atime.tv_sec = 2324191783Srmacklem fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 2325191783Srmacklem nvap->na_atime.tv_nsec = 0; 2326191783Srmacklem#endif 2327191783Srmacklem } 2328191783Srmacklem if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 2329191783Srmacklem fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 2330191783Srmacklem break; 2331191783Srmacklem case ND_NFSV3: 2332191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2333191783Srmacklem if (*tl == newnfs_true) { 2334191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2335191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2336191783Srmacklem } 2337191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2338191783Srmacklem if (*tl == newnfs_true) { 2339191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2340191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, *tl); 2341191783Srmacklem } 2342191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2343191783Srmacklem if (*tl == newnfs_true) { 2344191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2345191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, *tl); 2346191783Srmacklem } 2347191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2348191783Srmacklem if (*tl == newnfs_true) { 2349191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2350191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2351191783Srmacklem } 2352191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2353191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2354191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2355191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2356191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_atime); 2357191783Srmacklem toclient = 1; 2358191783Srmacklem break; 2359191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2360247502Sjhb vfs_timestamp(&nvap->na_atime); 2361191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2362191783Srmacklem break; 2363191783Srmacklem }; 2364191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2365191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2366191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2367191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2368191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_mtime); 2369191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2370191783Srmacklem break; 2371191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2372247502Sjhb vfs_timestamp(&nvap->na_mtime); 2373191783Srmacklem if (!toclient) 2374191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2375191783Srmacklem break; 2376191783Srmacklem }; 2377191783Srmacklem break; 2378191783Srmacklem case ND_NFSV4: 2379191783Srmacklem error = nfsv4_sattr(nd, nvap, attrbitp, aclp, p); 2380191783Srmacklem }; 2381191783Srmacklemnfsmout: 2382224086Szack NFSEXITCODE2(error, nd); 2383191783Srmacklem return (error); 2384191783Srmacklem} 2385191783Srmacklem 2386191783Srmacklem/* 2387191783Srmacklem * Handle the setable attributes for V4. 2388191783Srmacklem * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 2389191783Srmacklem */ 2390191783Srmacklemint 2391191783Srmacklemnfsv4_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2392191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2393191783Srmacklem{ 2394191783Srmacklem u_int32_t *tl; 2395191783Srmacklem int attrsum = 0; 2396191783Srmacklem int i, j; 2397191783Srmacklem int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 2398191783Srmacklem int toclient = 0; 2399191783Srmacklem u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 2400191783Srmacklem uid_t uid; 2401191783Srmacklem gid_t gid; 2402191783Srmacklem 2403191783Srmacklem error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 2404191783Srmacklem if (error) 2405224086Szack goto nfsmout; 2406191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2407191783Srmacklem attrsize = fxdr_unsigned(int, *tl); 2408191783Srmacklem 2409191783Srmacklem /* 2410191783Srmacklem * Loop around getting the setable attributes. If an unsupported 2411191783Srmacklem * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 2412191783Srmacklem */ 2413191783Srmacklem if (retnotsup) { 2414191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2415191783Srmacklem bitpos = NFSATTRBIT_MAX; 2416191783Srmacklem } else { 2417191783Srmacklem bitpos = 0; 2418191783Srmacklem } 2419191783Srmacklem for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 2420191783Srmacklem if (attrsum > attrsize) { 2421191783Srmacklem error = NFSERR_BADXDR; 2422191783Srmacklem goto nfsmout; 2423191783Srmacklem } 2424191783Srmacklem if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 2425191783Srmacklem switch (bitpos) { 2426191783Srmacklem case NFSATTRBIT_SIZE: 2427191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2428191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2429191783Srmacklem attrsum += NFSX_HYPER; 2430191783Srmacklem break; 2431191783Srmacklem case NFSATTRBIT_ACL: 2432191783Srmacklem error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize, 2433191783Srmacklem p); 2434191783Srmacklem if (error) 2435191783Srmacklem goto nfsmout; 2436191783Srmacklem if (aceerr && !nd->nd_repstat) 2437224077Szack nd->nd_repstat = aceerr; 2438191783Srmacklem attrsum += aclsize; 2439191783Srmacklem break; 2440191783Srmacklem case NFSATTRBIT_ARCHIVE: 2441191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2442191783Srmacklem if (!nd->nd_repstat) 2443191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2444191783Srmacklem attrsum += NFSX_UNSIGNED; 2445191783Srmacklem break; 2446191783Srmacklem case NFSATTRBIT_HIDDEN: 2447191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2448191783Srmacklem if (!nd->nd_repstat) 2449191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2450191783Srmacklem attrsum += NFSX_UNSIGNED; 2451191783Srmacklem break; 2452191783Srmacklem case NFSATTRBIT_MIMETYPE: 2453191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2454191783Srmacklem i = fxdr_unsigned(int, *tl); 2455191783Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 2456191783Srmacklem if (error) 2457191783Srmacklem goto nfsmout; 2458191783Srmacklem if (!nd->nd_repstat) 2459191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2460191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 2461191783Srmacklem break; 2462191783Srmacklem case NFSATTRBIT_MODE: 2463191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2464191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2465191783Srmacklem attrsum += NFSX_UNSIGNED; 2466191783Srmacklem break; 2467191783Srmacklem case NFSATTRBIT_OWNER: 2468191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2469191783Srmacklem j = fxdr_unsigned(int, *tl); 2470224086Szack if (j < 0) { 2471224086Szack error = NFSERR_BADXDR; 2472224086Szack goto nfsmout; 2473224086Szack } 2474191783Srmacklem if (j > NFSV4_SMALLSTR) 2475191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2476191783Srmacklem else 2477191783Srmacklem cp = namestr; 2478191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2479191783Srmacklem if (error) { 2480191783Srmacklem if (j > NFSV4_SMALLSTR) 2481191783Srmacklem free(cp, M_NFSSTRING); 2482224086Szack goto nfsmout; 2483191783Srmacklem } 2484191783Srmacklem if (!nd->nd_repstat) { 2485241194Srmacklem nd->nd_repstat = nfsv4_strtouid(nd, cp, j, &uid, 2486241194Srmacklem p); 2487191783Srmacklem if (!nd->nd_repstat) 2488191783Srmacklem nvap->na_uid = uid; 2489191783Srmacklem } 2490191783Srmacklem if (j > NFSV4_SMALLSTR) 2491191783Srmacklem free(cp, M_NFSSTRING); 2492191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2493191783Srmacklem break; 2494191783Srmacklem case NFSATTRBIT_OWNERGROUP: 2495191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2496191783Srmacklem j = fxdr_unsigned(int, *tl); 2497224086Szack if (j < 0) { 2498224086Szack error = NFSERR_BADXDR; 2499224086Szack goto nfsmout; 2500224086Szack } 2501191783Srmacklem if (j > NFSV4_SMALLSTR) 2502191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2503191783Srmacklem else 2504191783Srmacklem cp = namestr; 2505191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2506191783Srmacklem if (error) { 2507191783Srmacklem if (j > NFSV4_SMALLSTR) 2508191783Srmacklem free(cp, M_NFSSTRING); 2509224086Szack goto nfsmout; 2510191783Srmacklem } 2511191783Srmacklem if (!nd->nd_repstat) { 2512241194Srmacklem nd->nd_repstat = nfsv4_strtogid(nd, cp, j, &gid, 2513241194Srmacklem p); 2514191783Srmacklem if (!nd->nd_repstat) 2515191783Srmacklem nvap->na_gid = gid; 2516191783Srmacklem } 2517191783Srmacklem if (j > NFSV4_SMALLSTR) 2518191783Srmacklem free(cp, M_NFSSTRING); 2519191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2520191783Srmacklem break; 2521191783Srmacklem case NFSATTRBIT_SYSTEM: 2522191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2523191783Srmacklem if (!nd->nd_repstat) 2524191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2525191783Srmacklem attrsum += NFSX_UNSIGNED; 2526191783Srmacklem break; 2527191783Srmacklem case NFSATTRBIT_TIMEACCESSSET: 2528191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2529191783Srmacklem attrsum += NFSX_UNSIGNED; 2530191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2531191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2532191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_atime); 2533191783Srmacklem toclient = 1; 2534191783Srmacklem attrsum += NFSX_V4TIME; 2535191783Srmacklem } else { 2536247502Sjhb vfs_timestamp(&nvap->na_atime); 2537191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2538191783Srmacklem } 2539191783Srmacklem break; 2540191783Srmacklem case NFSATTRBIT_TIMEBACKUP: 2541191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2542191783Srmacklem if (!nd->nd_repstat) 2543191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2544191783Srmacklem attrsum += NFSX_V4TIME; 2545191783Srmacklem break; 2546191783Srmacklem case NFSATTRBIT_TIMECREATE: 2547191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2548191783Srmacklem if (!nd->nd_repstat) 2549191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2550191783Srmacklem attrsum += NFSX_V4TIME; 2551191783Srmacklem break; 2552191783Srmacklem case NFSATTRBIT_TIMEMODIFYSET: 2553191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2554191783Srmacklem attrsum += NFSX_UNSIGNED; 2555191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2556191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2557191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_mtime); 2558191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2559191783Srmacklem attrsum += NFSX_V4TIME; 2560191783Srmacklem } else { 2561247502Sjhb vfs_timestamp(&nvap->na_mtime); 2562191783Srmacklem if (!toclient) 2563191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2564191783Srmacklem } 2565191783Srmacklem break; 2566191783Srmacklem default: 2567191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2568191783Srmacklem /* 2569191783Srmacklem * set bitpos so we drop out of the loop. 2570191783Srmacklem */ 2571191783Srmacklem bitpos = NFSATTRBIT_MAX; 2572191783Srmacklem break; 2573191783Srmacklem }; 2574191783Srmacklem } 2575191783Srmacklem 2576191783Srmacklem /* 2577191783Srmacklem * some clients pad the attrlist, so we need to skip over the 2578191783Srmacklem * padding. 2579191783Srmacklem */ 2580191783Srmacklem if (attrsum > attrsize) { 2581191783Srmacklem error = NFSERR_BADXDR; 2582191783Srmacklem } else { 2583191783Srmacklem attrsize = NFSM_RNDUP(attrsize); 2584191783Srmacklem if (attrsum < attrsize) 2585191783Srmacklem error = nfsm_advance(nd, attrsize - attrsum, -1); 2586191783Srmacklem } 2587191783Srmacklemnfsmout: 2588224086Szack NFSEXITCODE2(error, nd); 2589191783Srmacklem return (error); 2590191783Srmacklem} 2591191783Srmacklem 2592191783Srmacklem/* 2593191783Srmacklem * Check/setup export credentials. 2594191783Srmacklem */ 2595191783Srmacklemint 2596191783Srmacklemnfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 2597191783Srmacklem struct ucred *credanon) 2598191783Srmacklem{ 2599191783Srmacklem int error = 0; 2600191783Srmacklem 2601191783Srmacklem /* 2602191783Srmacklem * Check/setup credentials. 2603191783Srmacklem */ 2604191783Srmacklem if (nd->nd_flag & ND_GSS) 2605192121Srmacklem exp->nes_exflag &= ~MNT_EXPORTANON; 2606191783Srmacklem 2607191783Srmacklem /* 2608192121Srmacklem * Check to see if the operation is allowed for this security flavor. 2609191783Srmacklem * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to 2610191783Srmacklem * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 2611192121Srmacklem * Also, allow Secinfo, so that it can acquire the correct flavor(s). 2612191783Srmacklem */ 2613192121Srmacklem if (nfsvno_testexp(nd, exp) && 2614192121Srmacklem nd->nd_procnum != NFSV4OP_SECINFO && 2615191783Srmacklem nd->nd_procnum != NFSPROC_FSINFO) { 2616191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2617191783Srmacklem error = NFSERR_WRONGSEC; 2618191783Srmacklem else 2619191783Srmacklem error = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2620224086Szack goto out; 2621191783Srmacklem } 2622191783Srmacklem 2623191783Srmacklem /* 2624191783Srmacklem * Check to see if the file system is exported V4 only. 2625191783Srmacklem */ 2626224086Szack if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) { 2627224086Szack error = NFSERR_PROGNOTV4; 2628224086Szack goto out; 2629224086Szack } 2630191783Srmacklem 2631191783Srmacklem /* 2632191783Srmacklem * Now, map the user credentials. 2633191783Srmacklem * (Note that ND_AUTHNONE will only be set for an NFSv3 2634191783Srmacklem * Fsinfo RPC. If set for anything else, this code might need 2635191783Srmacklem * to change.) 2636191783Srmacklem */ 2637191783Srmacklem if (NFSVNO_EXPORTED(exp) && 2638191783Srmacklem ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) || 2639191783Srmacklem NFSVNO_EXPORTANON(exp) || 2640191783Srmacklem (nd->nd_flag & ND_AUTHNONE))) { 2641191783Srmacklem nd->nd_cred->cr_uid = credanon->cr_uid; 2642191783Srmacklem nd->nd_cred->cr_gid = credanon->cr_gid; 2643194498Sbrooks crsetgroups(nd->nd_cred, credanon->cr_ngroups, 2644194498Sbrooks credanon->cr_groups); 2645191783Srmacklem } 2646224086Szack 2647224086Szackout: 2648224086Szack NFSEXITCODE2(error, nd); 2649224086Szack return (error); 2650191783Srmacklem} 2651191783Srmacklem 2652191783Srmacklem/* 2653191783Srmacklem * Check exports. 2654191783Srmacklem */ 2655191783Srmacklemint 2656191783Srmacklemnfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 2657191783Srmacklem struct ucred **credp) 2658191783Srmacklem{ 2659192121Srmacklem int i, error, *secflavors; 2660191783Srmacklem 2661191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2662192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2663192121Srmacklem if (error) { 2664192121Srmacklem if (nfs_rootfhset) { 2665192121Srmacklem exp->nes_exflag = 0; 2666192121Srmacklem exp->nes_numsecflavor = 0; 2667192121Srmacklem error = 0; 2668192121Srmacklem } 2669192121Srmacklem } else { 2670192121Srmacklem /* Copy the security flavors. */ 2671192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2672192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2673191783Srmacklem } 2674224086Szack NFSEXITCODE(error); 2675191783Srmacklem return (error); 2676191783Srmacklem} 2677191783Srmacklem 2678191783Srmacklem/* 2679191783Srmacklem * Get a vnode for a file handle and export stuff. 2680191783Srmacklem */ 2681191783Srmacklemint 2682191783Srmacklemnfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 2683216700Srmacklem int lktype, struct vnode **vpp, struct nfsexstuff *exp, 2684216700Srmacklem struct ucred **credp) 2685191783Srmacklem{ 2686192121Srmacklem int i, error, *secflavors; 2687191783Srmacklem 2688191998Srmacklem *credp = NULL; 2689192121Srmacklem exp->nes_numsecflavor = 0; 2690217063Srmacklem if (VFS_NEEDSGIANT(mp)) 2691217063Srmacklem error = ESTALE; 2692217063Srmacklem else 2693222167Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, vpp); 2694205663Srmacklem if (error != 0) 2695205663Srmacklem /* Make sure the server replies ESTALE to the client. */ 2696205663Srmacklem error = ESTALE; 2697191783Srmacklem if (nam && !error) { 2698191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2699192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2700191783Srmacklem if (error) { 2701191783Srmacklem if (nfs_rootfhset) { 2702191783Srmacklem exp->nes_exflag = 0; 2703192121Srmacklem exp->nes_numsecflavor = 0; 2704191783Srmacklem error = 0; 2705191783Srmacklem } else { 2706191783Srmacklem vput(*vpp); 2707191783Srmacklem } 2708192121Srmacklem } else { 2709192121Srmacklem /* Copy the security flavors. */ 2710192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2711192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2712191783Srmacklem } 2713191783Srmacklem } 2714216700Srmacklem if (error == 0 && lktype == LK_SHARED) 2715216700Srmacklem /* 2716216700Srmacklem * It would be much better to pass lktype to VFS_FHTOVP(), 2717216700Srmacklem * but this will have to do until VFS_FHTOVP() has a lock 2718216700Srmacklem * type argument like VFS_VGET(). 2719216700Srmacklem */ 2720224081Szack NFSVOPLOCK(*vpp, LK_DOWNGRADE | LK_RETRY); 2721224086Szack 2722224086Szack NFSEXITCODE(error); 2723191783Srmacklem return (error); 2724191783Srmacklem} 2725191783Srmacklem 2726191783Srmacklem/* 2727191783Srmacklem * nfsd_fhtovp() - convert a fh to a vnode ptr 2728191783Srmacklem * - look up fsid in mount list (if not found ret error) 2729191783Srmacklem * - get vp and export rights by calling nfsvno_fhtovp() 2730191783Srmacklem * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2731191783Srmacklem * for AUTH_SYS 2732217063Srmacklem * - if mpp != NULL, return the mount point so that it can 2733217063Srmacklem * be used for vn_finished_write() by the caller 2734191783Srmacklem */ 2735191783Srmacklemvoid 2736216700Srmacklemnfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype, 2737191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, 2738191783Srmacklem struct mount **mpp, int startwrite, struct thread *p) 2739191783Srmacklem{ 2740191783Srmacklem struct mount *mp; 2741191783Srmacklem struct ucred *credanon; 2742191783Srmacklem fhandle_t *fhp; 2743191783Srmacklem 2744191783Srmacklem fhp = (fhandle_t *)nfp->nfsrvfh_data; 2745191783Srmacklem /* 2746191783Srmacklem * Check for the special case of the nfsv4root_fh. 2747191783Srmacklem */ 2748217017Srmacklem mp = vfs_busyfs(&fhp->fh_fsid); 2749217063Srmacklem if (mpp != NULL) 2750217063Srmacklem *mpp = mp; 2751217017Srmacklem if (mp == NULL) { 2752191783Srmacklem *vpp = NULL; 2753191783Srmacklem nd->nd_repstat = ESTALE; 2754224086Szack goto out; 2755191783Srmacklem } 2756191783Srmacklem 2757251641Sken if (startwrite) { 2758191783Srmacklem vn_start_write(NULL, mpp, V_WAIT); 2759251641Sken if (lktype == LK_SHARED && !(MNT_SHARED_WRITES(mp))) 2760251641Sken lktype = LK_EXCLUSIVE; 2761251641Sken } 2762216700Srmacklem nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp, 2763191783Srmacklem &credanon); 2764217017Srmacklem vfs_unbusy(mp); 2765191783Srmacklem 2766191783Srmacklem /* 2767191783Srmacklem * For NFSv4 without a pseudo root fs, unexported file handles 2768191783Srmacklem * can be returned, so that Lookup works everywhere. 2769191783Srmacklem */ 2770191783Srmacklem if (!nd->nd_repstat && exp->nes_exflag == 0 && 2771191783Srmacklem !(nd->nd_flag & ND_NFSV4)) { 2772191783Srmacklem vput(*vpp); 2773191783Srmacklem nd->nd_repstat = EACCES; 2774191783Srmacklem } 2775191783Srmacklem 2776191783Srmacklem /* 2777191783Srmacklem * Personally, I've never seen any point in requiring a 2778191783Srmacklem * reserved port#, since only in the rare case where the 2779191783Srmacklem * clients are all boxes with secure system priviledges, 2780191783Srmacklem * does it provide any enhanced security, but... some people 2781191783Srmacklem * believe it to be useful and keep putting this code back in. 2782191783Srmacklem * (There is also some "security checker" out there that 2783191783Srmacklem * complains if the nfs server doesn't enforce this.) 2784191783Srmacklem * However, note the following: 2785191783Srmacklem * RFC3530 (NFSv4) specifies that a reserved port# not be 2786191783Srmacklem * required. 2787191783Srmacklem * RFC2623 recommends that, if a reserved port# is checked for, 2788191783Srmacklem * that there be a way to turn that off--> ifdef'd. 2789191783Srmacklem */ 2790191783Srmacklem#ifdef NFS_REQRSVPORT 2791191783Srmacklem if (!nd->nd_repstat) { 2792192121Srmacklem struct sockaddr_in *saddr; 2793192121Srmacklem struct sockaddr_in6 *saddr6; 2794192121Srmacklem 2795192121Srmacklem saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 2796192121Srmacklem saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 2797192121Srmacklem if (!(nd->nd_flag & ND_NFSV4) && 2798192121Srmacklem ((saddr->sin_family == AF_INET && 2799192121Srmacklem ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 2800192121Srmacklem (saddr6->sin6_family == AF_INET6 && 2801192121Srmacklem ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 2802192121Srmacklem vput(*vpp); 2803192121Srmacklem nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2804192121Srmacklem } 2805191783Srmacklem } 2806191783Srmacklem#endif /* NFS_REQRSVPORT */ 2807191783Srmacklem 2808191783Srmacklem /* 2809191783Srmacklem * Check/setup credentials. 2810191783Srmacklem */ 2811191783Srmacklem if (!nd->nd_repstat) { 2812191783Srmacklem nd->nd_saveduid = nd->nd_cred->cr_uid; 2813191783Srmacklem nd->nd_repstat = nfsd_excred(nd, exp, credanon); 2814191783Srmacklem if (nd->nd_repstat) 2815191783Srmacklem vput(*vpp); 2816191783Srmacklem } 2817191940Skan if (credanon != NULL) 2818191940Skan crfree(credanon); 2819191783Srmacklem if (nd->nd_repstat) { 2820191783Srmacklem if (startwrite) 2821191783Srmacklem vn_finished_write(mp); 2822191783Srmacklem *vpp = NULL; 2823217063Srmacklem if (mpp != NULL) 2824217063Srmacklem *mpp = NULL; 2825191783Srmacklem } 2826224086Szack 2827224086Szackout: 2828224086Szack NFSEXITCODE2(0, nd); 2829191783Srmacklem} 2830191783Srmacklem 2831191783Srmacklem/* 2832191783Srmacklem * glue for fp. 2833191783Srmacklem */ 2834191783Srmacklemint 2835191783Srmacklemfp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 2836191783Srmacklem{ 2837191783Srmacklem struct filedesc *fdp; 2838191783Srmacklem struct file *fp; 2839224086Szack int error = 0; 2840191783Srmacklem 2841191783Srmacklem fdp = p->td_proc->p_fd; 2842191783Srmacklem if (fd >= fdp->fd_nfiles || 2843224086Szack (fp = fdp->fd_ofiles[fd]) == NULL) { 2844224086Szack error = EBADF; 2845224086Szack goto out; 2846224086Szack } 2847191783Srmacklem *fpp = fp; 2848224086Szack 2849224086Szackout: 2850224086Szack NFSEXITCODE(error); 2851224086Szack return (error); 2852191783Srmacklem} 2853191783Srmacklem 2854191783Srmacklem/* 2855192121Srmacklem * Called from nfssvc() to update the exports list. Just call 2856191783Srmacklem * vfs_export(). This has to be done, since the v4 root fake fs isn't 2857191783Srmacklem * in the mount list. 2858191783Srmacklem */ 2859191783Srmacklemint 2860191783Srmacklemnfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 2861191783Srmacklem{ 2862191783Srmacklem struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 2863224086Szack int error = 0; 2864191783Srmacklem struct nameidata nd; 2865191783Srmacklem fhandle_t fh; 2866191783Srmacklem 2867191783Srmacklem error = vfs_export(&nfsv4root_mnt, &nfsexargp->export); 2868216894Srmacklem if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0) 2869191783Srmacklem nfs_rootfhset = 0; 2870216894Srmacklem else if (error == 0) { 2871224086Szack if (nfsexargp->fspec == NULL) { 2872224086Szack error = EPERM; 2873224086Szack goto out; 2874224086Szack } 2875191783Srmacklem /* 2876191783Srmacklem * If fspec != NULL, this is the v4root path. 2877191783Srmacklem */ 2878191783Srmacklem NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_USERSPACE, 2879191783Srmacklem nfsexargp->fspec, p); 2880191783Srmacklem if ((error = namei(&nd)) != 0) 2881224086Szack goto out; 2882191783Srmacklem error = nfsvno_getfh(nd.ni_vp, &fh, p); 2883191783Srmacklem vrele(nd.ni_vp); 2884191783Srmacklem if (!error) { 2885191783Srmacklem nfs_rootfh.nfsrvfh_len = NFSX_MYFH; 2886191783Srmacklem NFSBCOPY((caddr_t)&fh, 2887191783Srmacklem nfs_rootfh.nfsrvfh_data, 2888191783Srmacklem sizeof (fhandle_t)); 2889191783Srmacklem nfs_rootfhset = 1; 2890191783Srmacklem } 2891191783Srmacklem } 2892224086Szack 2893224086Szackout: 2894224086Szack NFSEXITCODE(error); 2895191783Srmacklem return (error); 2896191783Srmacklem} 2897191783Srmacklem 2898191783Srmacklem/* 2899191783Srmacklem * This function needs to test to see if the system is near its limit 2900191783Srmacklem * for memory allocation via malloc() or mget() and return True iff 2901191783Srmacklem * either of these resources are near their limit. 2902191783Srmacklem * XXX (For now, this is just a stub.) 2903191783Srmacklem */ 2904191783Srmacklemint nfsrv_testmalloclimit = 0; 2905191783Srmacklemint 2906191783Srmacklemnfsrv_mallocmget_limit(void) 2907191783Srmacklem{ 2908191783Srmacklem static int printmesg = 0; 2909191783Srmacklem static int testval = 1; 2910191783Srmacklem 2911191783Srmacklem if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 2912191783Srmacklem if ((printmesg++ % 100) == 0) 2913191783Srmacklem printf("nfsd: malloc/mget near limit\n"); 2914191783Srmacklem return (1); 2915191783Srmacklem } 2916191783Srmacklem return (0); 2917191783Srmacklem} 2918191783Srmacklem 2919191783Srmacklem/* 2920191783Srmacklem * BSD specific initialization of a mount point. 2921191783Srmacklem */ 2922191783Srmacklemvoid 2923191783Srmacklemnfsd_mntinit(void) 2924191783Srmacklem{ 2925191783Srmacklem static int inited = 0; 2926191783Srmacklem 2927191783Srmacklem if (inited) 2928191783Srmacklem return; 2929191783Srmacklem inited = 1; 2930191783Srmacklem nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 2931191783Srmacklem TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist); 2932235626Smckusick TAILQ_INIT(&nfsv4root_mnt.mnt_activevnodelist); 2933191783Srmacklem nfsv4root_mnt.mnt_export = NULL; 2934191783Srmacklem TAILQ_INIT(&nfsv4root_opt); 2935191783Srmacklem TAILQ_INIT(&nfsv4root_newopt); 2936191783Srmacklem nfsv4root_mnt.mnt_opt = &nfsv4root_opt; 2937191783Srmacklem nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt; 2938191783Srmacklem nfsv4root_mnt.mnt_nvnodelistsize = 0; 2939235626Smckusick nfsv4root_mnt.mnt_activevnodelistsize = 0; 2940191783Srmacklem} 2941191783Srmacklem 2942191783Srmacklem/* 2943191783Srmacklem * Get a vnode for a file handle, without checking exports, etc. 2944191783Srmacklem */ 2945191783Srmacklemstruct vnode * 2946191783Srmacklemnfsvno_getvp(fhandle_t *fhp) 2947191783Srmacklem{ 2948191783Srmacklem struct mount *mp; 2949191783Srmacklem struct vnode *vp; 2950191783Srmacklem int error; 2951191783Srmacklem 2952217017Srmacklem mp = vfs_busyfs(&fhp->fh_fsid); 2953191783Srmacklem if (mp == NULL) 2954191783Srmacklem return (NULL); 2955222167Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp); 2956217017Srmacklem vfs_unbusy(mp); 2957191783Srmacklem if (error) 2958191783Srmacklem return (NULL); 2959191783Srmacklem return (vp); 2960191783Srmacklem} 2961191783Srmacklem 2962191783Srmacklem/* 2963191783Srmacklem * Do a local VOP_ADVLOCK(). 2964191783Srmacklem */ 2965191783Srmacklemint 2966191783Srmacklemnfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 2967192256Srmacklem u_int64_t end, struct thread *td) 2968191783Srmacklem{ 2969224086Szack int error = 0; 2970191783Srmacklem struct flock fl; 2971191783Srmacklem u_int64_t tlen; 2972191783Srmacklem 2973212833Srmacklem if (nfsrv_dolocallocks == 0) 2974224086Szack goto out; 2975216893Srmacklem 2976216893Srmacklem /* Check for VI_DOOMED here, so that VOP_ADVLOCK() isn't performed. */ 2977224086Szack if ((vp->v_iflag & VI_DOOMED) != 0) { 2978224086Szack error = EPERM; 2979224086Szack goto out; 2980224086Szack } 2981216893Srmacklem 2982191783Srmacklem fl.l_whence = SEEK_SET; 2983191783Srmacklem fl.l_type = ftype; 2984191783Srmacklem fl.l_start = (off_t)first; 2985191783Srmacklem if (end == NFS64BITSSET) { 2986191783Srmacklem fl.l_len = 0; 2987191783Srmacklem } else { 2988191783Srmacklem tlen = end - first; 2989191783Srmacklem fl.l_len = (off_t)tlen; 2990191783Srmacklem } 2991191783Srmacklem /* 2992192256Srmacklem * For FreeBSD8, the l_pid and l_sysid must be set to the same 2993192256Srmacklem * values for all calls, so that all locks will be held by the 2994192256Srmacklem * nfsd server. (The nfsd server handles conflicts between the 2995192256Srmacklem * various clients.) 2996192256Srmacklem * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 2997192256Srmacklem * bytes, so it can't be put in l_sysid. 2998191783Srmacklem */ 2999192503Srmacklem if (nfsv4_sysid == 0) 3000192503Srmacklem nfsv4_sysid = nlm_acquire_next_sysid(); 3001192256Srmacklem fl.l_pid = (pid_t)0; 3002192503Srmacklem fl.l_sysid = (int)nfsv4_sysid; 3003192256Srmacklem 3004224080Szack NFSVOPUNLOCK(vp, 0); 3005212833Srmacklem if (ftype == F_UNLCK) 3006212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, 3007212833Srmacklem (F_POSIX | F_REMOTE)); 3008212833Srmacklem else 3009212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 3010212833Srmacklem (F_POSIX | F_REMOTE)); 3011224080Szack NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY); 3012224086Szack 3013224086Szackout: 3014224086Szack NFSEXITCODE(error); 3015191783Srmacklem return (error); 3016191783Srmacklem} 3017191783Srmacklem 3018191783Srmacklem/* 3019191783Srmacklem * Check the nfsv4 root exports. 3020191783Srmacklem */ 3021191783Srmacklemint 3022191783Srmacklemnfsvno_v4rootexport(struct nfsrv_descript *nd) 3023191783Srmacklem{ 3024191783Srmacklem struct ucred *credanon; 3025224086Szack int exflags, error = 0, numsecflavor, *secflavors, i; 3026191783Srmacklem 3027191783Srmacklem error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags, 3028192121Srmacklem &credanon, &numsecflavor, &secflavors); 3029224086Szack if (error) { 3030224086Szack error = NFSERR_PROGUNAVAIL; 3031224086Szack goto out; 3032224086Szack } 3033191940Skan if (credanon != NULL) 3034191940Skan crfree(credanon); 3035192121Srmacklem for (i = 0; i < numsecflavor; i++) { 3036192121Srmacklem if (secflavors[i] == AUTH_SYS) 3037192121Srmacklem nd->nd_flag |= ND_EXAUTHSYS; 3038192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5) 3039192121Srmacklem nd->nd_flag |= ND_EXGSS; 3040192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5I) 3041192121Srmacklem nd->nd_flag |= ND_EXGSSINTEGRITY; 3042192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5P) 3043192121Srmacklem nd->nd_flag |= ND_EXGSSPRIVACY; 3044192121Srmacklem } 3045224086Szack 3046224086Szackout: 3047224086Szack NFSEXITCODE(error); 3048224086Szack return (error); 3049191783Srmacklem} 3050191783Srmacklem 3051191783Srmacklem/* 3052191783Srmacklem * Nfs server psuedo system call for the nfsd's 3053191783Srmacklem */ 3054191783Srmacklem/* 3055191783Srmacklem * MPSAFE 3056191783Srmacklem */ 3057191783Srmacklemstatic int 3058191783Srmacklemnfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 3059191783Srmacklem{ 3060191783Srmacklem struct file *fp; 3061192017Srmacklem struct nfsd_addsock_args sockarg; 3062192017Srmacklem struct nfsd_nfsd_args nfsdarg; 3063191783Srmacklem int error; 3064191783Srmacklem 3065191783Srmacklem if (uap->flag & NFSSVC_NFSDADDSOCK) { 3066192017Srmacklem error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 3067191783Srmacklem if (error) 3068224086Szack goto out; 3069224778Srwatson /* 3070224778Srwatson * Since we don't know what rights might be required, 3071224778Srwatson * pretend that we need them all. It is better to be too 3072224778Srwatson * careful than too reckless. 3073224778Srwatson */ 3074224778Srwatson if ((error = fget(td, sockarg.sock, CAP_SOCK_ALL, &fp)) != 0) 3075224086Szack goto out; 3076191783Srmacklem if (fp->f_type != DTYPE_SOCKET) { 3077191783Srmacklem fdrop(fp, td); 3078224086Szack error = EPERM; 3079224086Szack goto out; 3080191783Srmacklem } 3081191783Srmacklem error = nfsrvd_addsock(fp); 3082191783Srmacklem fdrop(fp, td); 3083191783Srmacklem } else if (uap->flag & NFSSVC_NFSDNFSD) { 3084224086Szack if (uap->argp == NULL) { 3085224086Szack error = EINVAL; 3086224086Szack goto out; 3087224086Szack } 3088192017Srmacklem error = copyin(uap->argp, (caddr_t)&nfsdarg, 3089192017Srmacklem sizeof (nfsdarg)); 3090192017Srmacklem if (error) 3091224086Szack goto out; 3092192017Srmacklem error = nfsrvd_nfsd(td, &nfsdarg); 3093191783Srmacklem } else { 3094191783Srmacklem error = nfssvc_srvcall(td, uap, td->td_ucred); 3095191783Srmacklem } 3096224086Szack 3097224086Szackout: 3098224086Szack NFSEXITCODE(error); 3099191783Srmacklem return (error); 3100191783Srmacklem} 3101191783Srmacklem 3102191783Srmacklemstatic int 3103191783Srmacklemnfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 3104191783Srmacklem{ 3105191783Srmacklem struct nfsex_args export; 3106191783Srmacklem struct file *fp = NULL; 3107191783Srmacklem int stablefd, len; 3108191783Srmacklem struct nfsd_clid adminrevoke; 3109191783Srmacklem struct nfsd_dumplist dumplist; 3110191783Srmacklem struct nfsd_dumpclients *dumpclients; 3111191783Srmacklem struct nfsd_dumplocklist dumplocklist; 3112191783Srmacklem struct nfsd_dumplocks *dumplocks; 3113191783Srmacklem struct nameidata nd; 3114191783Srmacklem vnode_t vp; 3115243738Srmacklem int error = EINVAL, igotlock; 3116217432Srmacklem struct proc *procp; 3117243738Srmacklem static int suspend_nfsd = 0; 3118191783Srmacklem 3119191783Srmacklem if (uap->flag & NFSSVC_PUBLICFH) { 3120191783Srmacklem NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 3121191783Srmacklem sizeof (fhandle_t)); 3122191783Srmacklem error = copyin(uap->argp, 3123191783Srmacklem &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 3124191783Srmacklem if (!error) 3125191783Srmacklem nfs_pubfhset = 1; 3126191783Srmacklem } else if (uap->flag & NFSSVC_V4ROOTEXPORT) { 3127191783Srmacklem error = copyin(uap->argp,(caddr_t)&export, 3128191783Srmacklem sizeof (struct nfsex_args)); 3129191783Srmacklem if (!error) 3130191783Srmacklem error = nfsrv_v4rootexport(&export, cred, p); 3131191783Srmacklem } else if (uap->flag & NFSSVC_NOPUBLICFH) { 3132191783Srmacklem nfs_pubfhset = 0; 3133191783Srmacklem error = 0; 3134191783Srmacklem } else if (uap->flag & NFSSVC_STABLERESTART) { 3135191783Srmacklem error = copyin(uap->argp, (caddr_t)&stablefd, 3136191783Srmacklem sizeof (int)); 3137191783Srmacklem if (!error) 3138191783Srmacklem error = fp_getfvp(p, stablefd, &fp, &vp); 3139191783Srmacklem if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 3140191783Srmacklem error = EBADF; 3141191783Srmacklem if (!error && newnfs_numnfsd != 0) 3142191783Srmacklem error = EPERM; 3143191783Srmacklem if (!error) { 3144191783Srmacklem nfsrv_stablefirst.nsf_fp = fp; 3145191783Srmacklem nfsrv_setupstable(p); 3146191783Srmacklem } 3147191783Srmacklem } else if (uap->flag & NFSSVC_ADMINREVOKE) { 3148191783Srmacklem error = copyin(uap->argp, (caddr_t)&adminrevoke, 3149191783Srmacklem sizeof (struct nfsd_clid)); 3150191783Srmacklem if (!error) 3151191783Srmacklem error = nfsrv_adminrevoke(&adminrevoke, p); 3152191783Srmacklem } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 3153191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplist, 3154191783Srmacklem sizeof (struct nfsd_dumplist)); 3155191783Srmacklem if (!error && (dumplist.ndl_size < 1 || 3156191783Srmacklem dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 3157191783Srmacklem error = EPERM; 3158191783Srmacklem if (!error) { 3159191783Srmacklem len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 3160191783Srmacklem dumpclients = (struct nfsd_dumpclients *)malloc(len, 3161191783Srmacklem M_TEMP, M_WAITOK); 3162191783Srmacklem nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 3163191783Srmacklem error = copyout(dumpclients, 3164191783Srmacklem CAST_USER_ADDR_T(dumplist.ndl_list), len); 3165191783Srmacklem free((caddr_t)dumpclients, M_TEMP); 3166191783Srmacklem } 3167191783Srmacklem } else if (uap->flag & NFSSVC_DUMPLOCKS) { 3168191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplocklist, 3169191783Srmacklem sizeof (struct nfsd_dumplocklist)); 3170191783Srmacklem if (!error && (dumplocklist.ndllck_size < 1 || 3171191783Srmacklem dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 3172191783Srmacklem error = EPERM; 3173191783Srmacklem if (!error) 3174191783Srmacklem error = nfsrv_lookupfilename(&nd, 3175191783Srmacklem dumplocklist.ndllck_fname, p); 3176191783Srmacklem if (!error) { 3177191783Srmacklem len = sizeof (struct nfsd_dumplocks) * 3178191783Srmacklem dumplocklist.ndllck_size; 3179191783Srmacklem dumplocks = (struct nfsd_dumplocks *)malloc(len, 3180191783Srmacklem M_TEMP, M_WAITOK); 3181191783Srmacklem nfsrv_dumplocks(nd.ni_vp, dumplocks, 3182191783Srmacklem dumplocklist.ndllck_size, p); 3183191783Srmacklem vput(nd.ni_vp); 3184191783Srmacklem error = copyout(dumplocks, 3185191783Srmacklem CAST_USER_ADDR_T(dumplocklist.ndllck_list), len); 3186191783Srmacklem free((caddr_t)dumplocks, M_TEMP); 3187191783Srmacklem } 3188217432Srmacklem } else if (uap->flag & NFSSVC_BACKUPSTABLE) { 3189217432Srmacklem procp = p->td_proc; 3190217432Srmacklem PROC_LOCK(procp); 3191217432Srmacklem nfsd_master_pid = procp->p_pid; 3192217432Srmacklem bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1); 3193217432Srmacklem nfsd_master_start = procp->p_stats->p_start; 3194217432Srmacklem nfsd_master_proc = procp; 3195217432Srmacklem PROC_UNLOCK(procp); 3196243738Srmacklem } else if ((uap->flag & NFSSVC_SUSPENDNFSD) != 0) { 3197243738Srmacklem NFSLOCKV4ROOTMUTEX(); 3198243738Srmacklem if (suspend_nfsd == 0) { 3199243738Srmacklem /* Lock out all nfsd threads */ 3200243738Srmacklem do { 3201243738Srmacklem igotlock = nfsv4_lock(&nfsd_suspend_lock, 1, 3202243738Srmacklem NULL, NFSV4ROOTLOCKMUTEXPTR, NULL); 3203243738Srmacklem } while (igotlock == 0 && suspend_nfsd == 0); 3204243738Srmacklem suspend_nfsd = 1; 3205243738Srmacklem } 3206243738Srmacklem NFSUNLOCKV4ROOTMUTEX(); 3207243738Srmacklem error = 0; 3208243738Srmacklem } else if ((uap->flag & NFSSVC_RESUMENFSD) != 0) { 3209243738Srmacklem NFSLOCKV4ROOTMUTEX(); 3210243738Srmacklem if (suspend_nfsd != 0) { 3211243738Srmacklem nfsv4_unlock(&nfsd_suspend_lock, 0); 3212243738Srmacklem suspend_nfsd = 0; 3213243738Srmacklem } 3214243738Srmacklem NFSUNLOCKV4ROOTMUTEX(); 3215243738Srmacklem error = 0; 3216191783Srmacklem } 3217224086Szack 3218224086Szack NFSEXITCODE(error); 3219191783Srmacklem return (error); 3220191783Srmacklem} 3221191783Srmacklem 3222192121Srmacklem/* 3223192121Srmacklem * Check exports. 3224192121Srmacklem * Returns 0 if ok, 1 otherwise. 3225192121Srmacklem */ 3226192121Srmacklemint 3227192121Srmacklemnfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 3228192121Srmacklem{ 3229192121Srmacklem int i; 3230192121Srmacklem 3231192121Srmacklem /* 3232192121Srmacklem * This seems odd, but allow the case where the security flavor 3233192121Srmacklem * list is empty. This happens when NFSv4 is traversing non-exported 3234192121Srmacklem * file systems. Exported file systems should always have a non-empty 3235192121Srmacklem * security flavor list. 3236192121Srmacklem */ 3237192121Srmacklem if (exp->nes_numsecflavor == 0) 3238192121Srmacklem return (0); 3239192121Srmacklem 3240192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) { 3241192121Srmacklem /* 3242192121Srmacklem * The tests for privacy and integrity must be first, 3243192121Srmacklem * since ND_GSS is set for everything but AUTH_SYS. 3244192121Srmacklem */ 3245192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 3246192121Srmacklem (nd->nd_flag & ND_GSSPRIVACY)) 3247192121Srmacklem return (0); 3248192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 3249192121Srmacklem (nd->nd_flag & ND_GSSINTEGRITY)) 3250192121Srmacklem return (0); 3251192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 3252192121Srmacklem (nd->nd_flag & ND_GSS)) 3253192121Srmacklem return (0); 3254192121Srmacklem if (exp->nes_secflavors[i] == AUTH_SYS && 3255192121Srmacklem (nd->nd_flag & ND_GSS) == 0) 3256192121Srmacklem return (0); 3257192121Srmacklem } 3258192121Srmacklem return (1); 3259192121Srmacklem} 3260192121Srmacklem 3261214224Srmacklem/* 3262214224Srmacklem * Calculate a hash value for the fid in a file handle. 3263214224Srmacklem */ 3264214255Srmacklemuint32_t 3265214224Srmacklemnfsrv_hashfh(fhandle_t *fhp) 3266214224Srmacklem{ 3267214255Srmacklem uint32_t hashval; 3268214224Srmacklem 3269214255Srmacklem hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0); 3270214224Srmacklem return (hashval); 3271214224Srmacklem} 3272214224Srmacklem 3273217432Srmacklem/* 3274217432Srmacklem * Signal the userland master nfsd to backup the stable restart file. 3275217432Srmacklem */ 3276217432Srmacklemvoid 3277217432Srmacklemnfsrv_backupstable(void) 3278217432Srmacklem{ 3279217432Srmacklem struct proc *procp; 3280217432Srmacklem 3281217432Srmacklem if (nfsd_master_proc != NULL) { 3282217432Srmacklem procp = pfind(nfsd_master_pid); 3283217432Srmacklem /* Try to make sure it is the correct process. */ 3284217432Srmacklem if (procp == nfsd_master_proc && 3285217432Srmacklem procp->p_stats->p_start.tv_sec == 3286217432Srmacklem nfsd_master_start.tv_sec && 3287217432Srmacklem procp->p_stats->p_start.tv_usec == 3288217432Srmacklem nfsd_master_start.tv_usec && 3289217432Srmacklem strcmp(procp->p_comm, nfsd_master_comm) == 0) 3290225617Skmacy kern_psignal(procp, SIGUSR2); 3291217432Srmacklem else 3292217432Srmacklem nfsd_master_proc = NULL; 3293217432Srmacklem 3294217432Srmacklem if (procp != NULL) 3295217432Srmacklem PROC_UNLOCK(procp); 3296217432Srmacklem } 3297217432Srmacklem} 3298217432Srmacklem 3299191783Srmacklemextern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 3300191783Srmacklem 3301191783Srmacklem/* 3302191783Srmacklem * Called once to initialize data structures... 3303191783Srmacklem */ 3304191783Srmacklemstatic int 3305191783Srmacklemnfsd_modevent(module_t mod, int type, void *data) 3306191783Srmacklem{ 3307255532Srmacklem int error = 0, i; 3308191783Srmacklem static int loaded = 0; 3309191783Srmacklem 3310191783Srmacklem switch (type) { 3311191783Srmacklem case MOD_LOAD: 3312191783Srmacklem if (loaded) 3313224086Szack goto out; 3314191783Srmacklem newnfs_portinit(); 3315255532Srmacklem for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) { 3316255532Srmacklem snprintf(nfsrchash_table[i].lock_name, 3317255532Srmacklem sizeof(nfsrchash_table[i].lock_name), "nfsrc_tcp%d", 3318255532Srmacklem i); 3319255532Srmacklem mtx_init(&nfsrchash_table[i].mtx, 3320255532Srmacklem nfsrchash_table[i].lock_name, NULL, MTX_DEF); 3321261067Smav snprintf(nfsrcahash_table[i].lock_name, 3322261067Smav sizeof(nfsrcahash_table[i].lock_name), "nfsrc_tcpa%d", 3323261067Smav i); 3324261067Smav mtx_init(&nfsrcahash_table[i].mtx, 3325261067Smav nfsrcahash_table[i].lock_name, NULL, MTX_DEF); 3326255532Srmacklem } 3327255532Srmacklem mtx_init(&nfsrc_udpmtx, "nfs_udpcache_mutex", NULL, MTX_DEF); 3328191783Srmacklem mtx_init(&nfs_v4root_mutex, "nfs_v4root_mutex", NULL, MTX_DEF); 3329191783Srmacklem mtx_init(&nfsv4root_mnt.mnt_mtx, "struct mount mtx", NULL, 3330191783Srmacklem MTX_DEF); 3331191783Srmacklem lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0); 3332191783Srmacklem nfsrvd_initcache(); 3333191783Srmacklem nfsd_init(); 3334191783Srmacklem NFSD_LOCK(); 3335191783Srmacklem nfsrvd_init(0); 3336191783Srmacklem NFSD_UNLOCK(); 3337191783Srmacklem nfsd_mntinit(); 3338191783Srmacklem#ifdef VV_DISABLEDELEG 3339191783Srmacklem vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 3340191783Srmacklem vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 3341191783Srmacklem#endif 3342191783Srmacklem nfsd_call_servertimer = nfsrv_servertimer; 3343191783Srmacklem nfsd_call_nfsd = nfssvc_nfsd; 3344191783Srmacklem loaded = 1; 3345191783Srmacklem break; 3346191783Srmacklem 3347191783Srmacklem case MOD_UNLOAD: 3348191783Srmacklem if (newnfs_numnfsd != 0) { 3349191783Srmacklem error = EBUSY; 3350191783Srmacklem break; 3351191783Srmacklem } 3352191783Srmacklem 3353191783Srmacklem#ifdef VV_DISABLEDELEG 3354191783Srmacklem vn_deleg_ops.vndeleg_recall = NULL; 3355191783Srmacklem vn_deleg_ops.vndeleg_disable = NULL; 3356191783Srmacklem#endif 3357191783Srmacklem nfsd_call_servertimer = NULL; 3358191783Srmacklem nfsd_call_nfsd = NULL; 3359217335Szack 3360220530Srmacklem /* Clean out all NFSv4 state. */ 3361220530Srmacklem nfsrv_throwawayallstate(curthread); 3362220530Srmacklem 3363217335Szack /* Clean the NFS server reply cache */ 3364217335Szack nfsrvd_cleancache(); 3365217335Szack 3366220530Srmacklem /* Free up the krpc server pool. */ 3367220530Srmacklem if (nfsrvd_pool != NULL) 3368220530Srmacklem svcpool_destroy(nfsrvd_pool); 3369220530Srmacklem 3370191783Srmacklem /* and get rid of the locks */ 3371261067Smav for (i = 0; i < NFSRVCACHE_HASHSIZE; i++) { 3372255532Srmacklem mtx_destroy(&nfsrchash_table[i].mtx); 3373261067Smav mtx_destroy(&nfsrcahash_table[i].mtx); 3374261067Smav } 3375255532Srmacklem mtx_destroy(&nfsrc_udpmtx); 3376191783Srmacklem mtx_destroy(&nfs_v4root_mutex); 3377191783Srmacklem mtx_destroy(&nfsv4root_mnt.mnt_mtx); 3378191783Srmacklem lockdestroy(&nfsv4root_mnt.mnt_explock); 3379191783Srmacklem loaded = 0; 3380191783Srmacklem break; 3381191783Srmacklem default: 3382191783Srmacklem error = EOPNOTSUPP; 3383191783Srmacklem break; 3384191783Srmacklem } 3385224086Szack 3386224086Szackout: 3387224086Szack NFSEXITCODE(error); 3388224086Szack return (error); 3389191783Srmacklem} 3390191783Srmacklemstatic moduledata_t nfsd_mod = { 3391191783Srmacklem "nfsd", 3392191783Srmacklem nfsd_modevent, 3393191783Srmacklem NULL, 3394191783Srmacklem}; 3395191783SrmacklemDECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 3396191783Srmacklem 3397191783Srmacklem/* So that loader and kldload(2) can find us, wherever we are.. */ 3398191783SrmacklemMODULE_VERSION(nfsd, 1); 3399191783SrmacklemMODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 3400216931SrmacklemMODULE_DEPEND(nfsd, nfslock, 1, 1, 1); 3401192574SrmacklemMODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 3402209191SrmacklemMODULE_DEPEND(nfsd, krpc, 1, 1, 1); 3403209191SrmacklemMODULE_DEPEND(nfsd, nfssvc, 1, 1, 1); 3404191783Srmacklem 3405