nfs_nfsdport.c revision 216898
1191783Srmacklem/*- 2191783Srmacklem * Copyright (c) 1989, 1993 3191783Srmacklem * The Regents of the University of California. All rights reserved. 4191783Srmacklem * 5191783Srmacklem * This code is derived from software contributed to Berkeley by 6191783Srmacklem * Rick Macklem at The University of Guelph. 7191783Srmacklem * 8191783Srmacklem * Redistribution and use in source and binary forms, with or without 9191783Srmacklem * modification, are permitted provided that the following conditions 10191783Srmacklem * are met: 11191783Srmacklem * 1. Redistributions of source code must retain the above copyright 12191783Srmacklem * notice, this list of conditions and the following disclaimer. 13191783Srmacklem * 2. Redistributions in binary form must reproduce the above copyright 14191783Srmacklem * notice, this list of conditions and the following disclaimer in the 15191783Srmacklem * documentation and/or other materials provided with the distribution. 16191783Srmacklem * 4. Neither the name of the University nor the names of its contributors 17191783Srmacklem * may be used to endorse or promote products derived from this software 18191783Srmacklem * without specific prior written permission. 19191783Srmacklem * 20191783Srmacklem * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21191783Srmacklem * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22191783Srmacklem * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23191783Srmacklem * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24191783Srmacklem * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25191783Srmacklem * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26191783Srmacklem * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27191783Srmacklem * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28191783Srmacklem * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29191783Srmacklem * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30191783Srmacklem * SUCH DAMAGE. 31191783Srmacklem * 32191783Srmacklem */ 33191783Srmacklem 34191783Srmacklem#include <sys/cdefs.h> 35191783Srmacklem__FBSDID("$FreeBSD: head/sys/fs/nfsserver/nfs_nfsdport.c 216898 2011-01-03 00:40:13Z rmacklem $"); 36191783Srmacklem 37191783Srmacklem/* 38191783Srmacklem * Functions that perform the vfs operations required by the routines in 39191783Srmacklem * nfsd_serv.c. It is hoped that this change will make the server more 40191783Srmacklem * portable. 41191783Srmacklem */ 42191783Srmacklem 43191783Srmacklem#include <fs/nfs/nfsport.h> 44214255Srmacklem#include <sys/hash.h> 45191783Srmacklem#include <sys/sysctl.h> 46192503Srmacklem#include <nlm/nlm_prot.h> 47192503Srmacklem#include <nlm/nlm.h> 48191783Srmacklem 49191783Srmacklemextern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1; 50191783Srmacklemextern int nfsrv_useacl; 51191783Srmacklemextern int newnfs_numnfsd; 52191783Srmacklemextern struct mount nfsv4root_mnt; 53191783Srmacklemextern struct nfsrv_stablefirst nfsrv_stablefirst; 54191783Srmacklemextern void (*nfsd_call_servertimer)(void); 55191783Srmacklemstruct vfsoptlist nfsv4root_opt, nfsv4root_newopt; 56191783SrmacklemNFSDLOCKMUTEX; 57191783Srmacklemstruct mtx nfs_cache_mutex; 58191783Srmacklemstruct mtx nfs_v4root_mutex; 59191783Srmacklemstruct nfsrvfh nfs_rootfh, nfs_pubfh; 60191783Srmacklemint nfs_pubfhset = 0, nfs_rootfhset = 0; 61192503Srmacklemstatic uint32_t nfsv4_sysid = 0; 62191783Srmacklem 63192255Srmacklemstatic int nfssvc_srvcall(struct thread *, struct nfssvc_args *, 64192255Srmacklem struct ucred *); 65191783Srmacklem 66191783Srmacklemstatic int enable_crossmntpt = 1; 67191783Srmacklemstatic int nfs_commit_blks; 68191783Srmacklemstatic int nfs_commit_miss; 69191783Srmacklemextern int nfsrv_issuedelegs; 70192255Srmacklemextern int nfsrv_dolocallocks; 71192255Srmacklem 72191783SrmacklemSYSCTL_DECL(_vfs_newnfs); 73192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, mirrormnt, CTLFLAG_RW, &enable_crossmntpt, 74192255Srmacklem 0, "Enable nfsd to cross mount points"); 75192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 76192255Srmacklem 0, ""); 77192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 78192255Srmacklem 0, ""); 79192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, issue_delegations, CTLFLAG_RW, 80192255Srmacklem &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); 81192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, enable_locallocks, CTLFLAG_RW, 82192255Srmacklem &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files"); 83191783Srmacklem 84191783Srmacklem#define NUM_HEURISTIC 1017 85191783Srmacklem#define NHUSE_INIT 64 86191783Srmacklem#define NHUSE_INC 16 87191783Srmacklem#define NHUSE_MAX 2048 88191783Srmacklem 89191783Srmacklemstatic struct nfsheur { 90191783Srmacklem struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 91191783Srmacklem off_t nh_nextr; /* next offset for sequential detection */ 92191783Srmacklem int nh_use; /* use count for selection */ 93191783Srmacklem int nh_seqcount; /* heuristic */ 94191783Srmacklem} nfsheur[NUM_HEURISTIC]; 95191783Srmacklem 96191783Srmacklem 97191783Srmacklem/* 98191783Srmacklem * Get attributes into nfsvattr structure. 99191783Srmacklem */ 100191783Srmacklemint 101191783Srmacklemnfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 102216693Srmacklem struct thread *p, int vpislocked) 103191783Srmacklem{ 104191783Srmacklem int error, lockedit = 0; 105191783Srmacklem 106216693Srmacklem if (vpislocked == 0) { 107216693Srmacklem /* 108216693Srmacklem * When vpislocked == 0, the vnode is either exclusively 109216693Srmacklem * locked by this thread or not locked by this thread. 110216693Srmacklem * As such, shared lock it, if not exclusively locked. 111216693Srmacklem */ 112216693Srmacklem if (VOP_ISLOCKED(vp) != LK_EXCLUSIVE) { 113216693Srmacklem lockedit = 1; 114216693Srmacklem vn_lock(vp, LK_SHARED | LK_RETRY); 115216693Srmacklem } 116191783Srmacklem } 117191783Srmacklem error = VOP_GETATTR(vp, &nvap->na_vattr, cred); 118216693Srmacklem if (lockedit != 0) 119216693Srmacklem VOP_UNLOCK(vp, 0); 120191783Srmacklem return (error); 121191783Srmacklem} 122191783Srmacklem 123191783Srmacklem/* 124191783Srmacklem * Get a file handle for a vnode. 125191783Srmacklem */ 126191783Srmacklemint 127191783Srmacklemnfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 128191783Srmacklem{ 129191783Srmacklem int error; 130191783Srmacklem 131191783Srmacklem NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 132191783Srmacklem fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 133191783Srmacklem error = VOP_VPTOFH(vp, &fhp->fh_fid); 134191783Srmacklem return (error); 135191783Srmacklem} 136191783Srmacklem 137191783Srmacklem/* 138191783Srmacklem * Perform access checking for vnodes obtained from file handles that would 139191783Srmacklem * refer to files already opened by a Unix client. You cannot just use 140200999Srmacklem * vn_writechk() and VOP_ACCESSX() for two reasons. 141200999Srmacklem * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write 142200999Srmacklem * case. 143191783Srmacklem * 2 - The owner is to be given access irrespective of mode bits for some 144191783Srmacklem * operations, so that processes that chmod after opening a file don't 145191783Srmacklem * break. 146191783Srmacklem */ 147191783Srmacklemint 148200999Srmacklemnfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred, 149200999Srmacklem struct nfsexstuff *exp, struct thread *p, int override, int vpislocked, 150200999Srmacklem u_int32_t *supportedtypep) 151191783Srmacklem{ 152191783Srmacklem struct vattr vattr; 153191783Srmacklem int error = 0, getret = 0; 154191783Srmacklem 155216893Srmacklem if (vpislocked == 0) { 156216893Srmacklem if (vn_lock(vp, LK_SHARED) != 0) 157216893Srmacklem return (EPERM); 158216893Srmacklem } 159191783Srmacklem if (accmode & VWRITE) { 160191783Srmacklem /* Just vn_writechk() changed to check rdonly */ 161191783Srmacklem /* 162191783Srmacklem * Disallow write attempts on read-only file systems; 163191783Srmacklem * unless the file is a socket or a block or character 164191783Srmacklem * device resident on the file system. 165191783Srmacklem */ 166191783Srmacklem if (NFSVNO_EXRDONLY(exp) || 167200999Srmacklem (vp->v_mount->mnt_flag & MNT_RDONLY)) { 168191783Srmacklem switch (vp->v_type) { 169191783Srmacklem case VREG: 170191783Srmacklem case VDIR: 171191783Srmacklem case VLNK: 172216893Srmacklem error = EROFS; 173191783Srmacklem default: 174191783Srmacklem break; 175191783Srmacklem } 176191783Srmacklem } 177191783Srmacklem /* 178191783Srmacklem * If there's shared text associated with 179191783Srmacklem * the inode, try to free it up once. If 180191783Srmacklem * we fail, we can't allow writing. 181191783Srmacklem */ 182216893Srmacklem if ((vp->v_vflag & VV_TEXT) != 0 && error == 0) 183216893Srmacklem error = ETXTBSY; 184191783Srmacklem } 185216893Srmacklem if (error != 0) { 186216893Srmacklem if (vpislocked == 0) 187216893Srmacklem VOP_UNLOCK(vp, 0); 188216893Srmacklem return (error); 189216893Srmacklem } 190191783Srmacklem 191191783Srmacklem /* 192191783Srmacklem * Should the override still be applied when ACLs are enabled? 193191783Srmacklem */ 194200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 195200999Srmacklem if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) { 196200999Srmacklem /* 197200999Srmacklem * Try again with VEXPLICIT_DENY, to see if the test for 198200999Srmacklem * deletion is supported. 199200999Srmacklem */ 200200999Srmacklem error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p); 201200999Srmacklem if (error == 0) { 202200999Srmacklem if (vp->v_type == VDIR) { 203200999Srmacklem accmode &= ~(VDELETE | VDELETE_CHILD); 204200999Srmacklem accmode |= VWRITE; 205200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 206200999Srmacklem } else if (supportedtypep != NULL) { 207200999Srmacklem *supportedtypep &= ~NFSACCESS_DELETE; 208200999Srmacklem } 209200999Srmacklem } 210200999Srmacklem } 211191783Srmacklem 212191783Srmacklem /* 213191783Srmacklem * Allow certain operations for the owner (reads and writes 214191783Srmacklem * on files that are already open). 215191783Srmacklem */ 216191783Srmacklem if (override != NFSACCCHK_NOOVERRIDE && 217191783Srmacklem (error == EPERM || error == EACCES)) { 218191783Srmacklem if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 219191783Srmacklem error = 0; 220191783Srmacklem else if (override & NFSACCCHK_ALLOWOWNER) { 221191783Srmacklem getret = VOP_GETATTR(vp, &vattr, cred); 222191783Srmacklem if (getret == 0 && cred->cr_uid == vattr.va_uid) 223191783Srmacklem error = 0; 224191783Srmacklem } 225191783Srmacklem } 226191783Srmacklem if (vpislocked == 0) 227216700Srmacklem VOP_UNLOCK(vp, 0); 228191783Srmacklem return (error); 229191783Srmacklem} 230191783Srmacklem 231191783Srmacklem/* 232191783Srmacklem * Set attribute(s) vnop. 233191783Srmacklem */ 234191783Srmacklemint 235191783Srmacklemnfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 236191783Srmacklem struct thread *p, struct nfsexstuff *exp) 237191783Srmacklem{ 238191783Srmacklem int error; 239191783Srmacklem 240191783Srmacklem error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 241191783Srmacklem return (error); 242191783Srmacklem} 243191783Srmacklem 244191783Srmacklem/* 245191783Srmacklem * Set up nameidata for a lookup() call and do it 246191783Srmacklem * For the cases where we are crossing mount points 247191783Srmacklem * (looking up the public fh path or the v4 root path when 248191783Srmacklem * not using a pseudo-root fs), set/release the Giant lock, 249191783Srmacklem * as required. 250191783Srmacklem */ 251191783Srmacklemint 252191783Srmacklemnfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 253191783Srmacklem struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p, 254191783Srmacklem struct vnode **retdirp) 255191783Srmacklem{ 256191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 257191783Srmacklem int i; 258191783Srmacklem struct iovec aiov; 259191783Srmacklem struct uio auio; 260191783Srmacklem int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 261191783Srmacklem int error = 0, crossmnt; 262191783Srmacklem char *cp; 263191783Srmacklem 264191783Srmacklem *retdirp = NULL; 265191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 266191783Srmacklem /* 267191783Srmacklem * Extract and set starting directory. 268191783Srmacklem */ 269191783Srmacklem if (dp->v_type != VDIR) { 270191783Srmacklem if (islocked) 271191783Srmacklem vput(dp); 272191783Srmacklem else 273191783Srmacklem vrele(dp); 274191783Srmacklem nfsvno_relpathbuf(ndp); 275191783Srmacklem return (ENOTDIR); 276191783Srmacklem } 277191783Srmacklem if (islocked) 278191783Srmacklem NFSVOPUNLOCK(dp, 0, p); 279191783Srmacklem VREF(dp); 280191783Srmacklem *retdirp = dp; 281191783Srmacklem if (NFSVNO_EXRDONLY(exp)) 282191783Srmacklem cnp->cn_flags |= RDONLY; 283191783Srmacklem ndp->ni_segflg = UIO_SYSSPACE; 284191783Srmacklem crossmnt = 1; 285191783Srmacklem 286191783Srmacklem if (nd->nd_flag & ND_PUBLOOKUP) { 287191783Srmacklem ndp->ni_loopcnt = 0; 288191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 289191783Srmacklem vrele(dp); 290191783Srmacklem /* 291191783Srmacklem * Check for degenerate pathnames here, since lookup() 292191783Srmacklem * panics on them. 293191783Srmacklem */ 294191783Srmacklem for (i = 1; i < ndp->ni_pathlen; i++) 295191783Srmacklem if (cnp->cn_pnbuf[i] != '/') 296191783Srmacklem break; 297191783Srmacklem if (i == ndp->ni_pathlen) { 298191783Srmacklem error = NFSERR_ACCES; 299191783Srmacklem goto out; 300191783Srmacklem } 301191783Srmacklem dp = rootvnode; 302191783Srmacklem VREF(dp); 303191783Srmacklem } 304191783Srmacklem } else if ((enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 305191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) { 306191783Srmacklem /* 307191783Srmacklem * Only cross mount points for NFSv4 when doing a 308191783Srmacklem * mount while traversing the file system above 309191783Srmacklem * the mount point, unless enable_crossmntpt is set. 310191783Srmacklem */ 311191783Srmacklem cnp->cn_flags |= NOCROSSMOUNT; 312191783Srmacklem crossmnt = 0; 313191783Srmacklem } 314191783Srmacklem 315191783Srmacklem /* 316191783Srmacklem * Initialize for scan, set ni_startdir and bump ref on dp again 317191783Srmacklem * becuase lookup() will dereference ni_startdir. 318191783Srmacklem */ 319191783Srmacklem 320191783Srmacklem cnp->cn_thread = p; 321191783Srmacklem ndp->ni_startdir = dp; 322191783Srmacklem ndp->ni_rootdir = rootvnode; 323191783Srmacklem 324191783Srmacklem if (!lockleaf) 325191783Srmacklem cnp->cn_flags |= LOCKLEAF; 326191783Srmacklem for (;;) { 327191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 328191783Srmacklem /* 329191783Srmacklem * Call lookup() to do the real work. If an error occurs, 330191783Srmacklem * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 331191783Srmacklem * we do not have to dereference anything before returning. 332191783Srmacklem * In either case ni_startdir will be dereferenced and NULLed 333191783Srmacklem * out. 334191783Srmacklem */ 335191783Srmacklem if (exp->nes_vfslocked) 336191783Srmacklem ndp->ni_cnd.cn_flags |= GIANTHELD; 337191783Srmacklem error = lookup(ndp); 338191783Srmacklem /* 339191783Srmacklem * The Giant lock should only change when 340191783Srmacklem * crossing mount points. 341191783Srmacklem */ 342191783Srmacklem if (crossmnt) { 343191783Srmacklem exp->nes_vfslocked = 344191783Srmacklem (ndp->ni_cnd.cn_flags & GIANTHELD) != 0; 345191783Srmacklem ndp->ni_cnd.cn_flags &= ~GIANTHELD; 346191783Srmacklem } 347191783Srmacklem if (error) 348191783Srmacklem break; 349191783Srmacklem 350191783Srmacklem /* 351191783Srmacklem * Check for encountering a symbolic link. Trivial 352191783Srmacklem * termination occurs if no symlink encountered. 353191783Srmacklem */ 354191783Srmacklem if ((cnp->cn_flags & ISSYMLINK) == 0) { 355191783Srmacklem if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0) 356191783Srmacklem nfsvno_relpathbuf(ndp); 357191783Srmacklem if (ndp->ni_vp && !lockleaf) 358191783Srmacklem NFSVOPUNLOCK(ndp->ni_vp, 0, p); 359191783Srmacklem break; 360191783Srmacklem } 361191783Srmacklem 362191783Srmacklem /* 363191783Srmacklem * Validate symlink 364191783Srmacklem */ 365191783Srmacklem if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 366191783Srmacklem NFSVOPUNLOCK(ndp->ni_dvp, 0, p); 367191783Srmacklem if (!(nd->nd_flag & ND_PUBLOOKUP)) { 368191783Srmacklem error = EINVAL; 369191783Srmacklem goto badlink2; 370191783Srmacklem } 371191783Srmacklem 372191783Srmacklem if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 373191783Srmacklem error = ELOOP; 374191783Srmacklem goto badlink2; 375191783Srmacklem } 376191783Srmacklem if (ndp->ni_pathlen > 1) 377191783Srmacklem cp = uma_zalloc(namei_zone, M_WAITOK); 378191783Srmacklem else 379191783Srmacklem cp = cnp->cn_pnbuf; 380191783Srmacklem aiov.iov_base = cp; 381191783Srmacklem aiov.iov_len = MAXPATHLEN; 382191783Srmacklem auio.uio_iov = &aiov; 383191783Srmacklem auio.uio_iovcnt = 1; 384191783Srmacklem auio.uio_offset = 0; 385191783Srmacklem auio.uio_rw = UIO_READ; 386191783Srmacklem auio.uio_segflg = UIO_SYSSPACE; 387191783Srmacklem auio.uio_td = NULL; 388191783Srmacklem auio.uio_resid = MAXPATHLEN; 389191783Srmacklem error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 390191783Srmacklem if (error) { 391191783Srmacklem badlink1: 392191783Srmacklem if (ndp->ni_pathlen > 1) 393191783Srmacklem uma_zfree(namei_zone, cp); 394191783Srmacklem badlink2: 395191783Srmacklem vrele(ndp->ni_dvp); 396191783Srmacklem vput(ndp->ni_vp); 397191783Srmacklem break; 398191783Srmacklem } 399191783Srmacklem linklen = MAXPATHLEN - auio.uio_resid; 400191783Srmacklem if (linklen == 0) { 401191783Srmacklem error = ENOENT; 402191783Srmacklem goto badlink1; 403191783Srmacklem } 404191783Srmacklem if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 405191783Srmacklem error = ENAMETOOLONG; 406191783Srmacklem goto badlink1; 407191783Srmacklem } 408191783Srmacklem 409191783Srmacklem /* 410191783Srmacklem * Adjust or replace path 411191783Srmacklem */ 412191783Srmacklem if (ndp->ni_pathlen > 1) { 413191783Srmacklem NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 414191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 415191783Srmacklem cnp->cn_pnbuf = cp; 416191783Srmacklem } else 417191783Srmacklem cnp->cn_pnbuf[linklen] = '\0'; 418191783Srmacklem ndp->ni_pathlen += linklen; 419191783Srmacklem 420191783Srmacklem /* 421191783Srmacklem * Cleanup refs for next loop and check if root directory 422191783Srmacklem * should replace current directory. Normally ni_dvp 423191783Srmacklem * becomes the new base directory and is cleaned up when 424191783Srmacklem * we loop. Explicitly null pointers after invalidation 425191783Srmacklem * to clarify operation. 426191783Srmacklem */ 427191783Srmacklem vput(ndp->ni_vp); 428191783Srmacklem ndp->ni_vp = NULL; 429191783Srmacklem 430191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 431191783Srmacklem vrele(ndp->ni_dvp); 432191783Srmacklem ndp->ni_dvp = ndp->ni_rootdir; 433191783Srmacklem VREF(ndp->ni_dvp); 434191783Srmacklem } 435191783Srmacklem ndp->ni_startdir = ndp->ni_dvp; 436191783Srmacklem ndp->ni_dvp = NULL; 437191783Srmacklem } 438191783Srmacklem if (!lockleaf) 439191783Srmacklem cnp->cn_flags &= ~LOCKLEAF; 440191783Srmacklem 441191783Srmacklemout: 442191783Srmacklem if (error) { 443191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 444191783Srmacklem ndp->ni_vp = NULL; 445191783Srmacklem ndp->ni_dvp = NULL; 446191783Srmacklem ndp->ni_startdir = NULL; 447191783Srmacklem cnp->cn_flags &= ~HASBUF; 448191783Srmacklem } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 449191783Srmacklem ndp->ni_dvp = NULL; 450191783Srmacklem } 451191783Srmacklem return (error); 452191783Srmacklem} 453191783Srmacklem 454191783Srmacklem/* 455191783Srmacklem * Set up a pathname buffer and return a pointer to it and, optionally 456191783Srmacklem * set a hash pointer. 457191783Srmacklem */ 458191783Srmacklemvoid 459191783Srmacklemnfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 460191783Srmacklem{ 461191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 462191783Srmacklem 463191783Srmacklem cnp->cn_flags |= (NOMACCHECK | HASBUF); 464191783Srmacklem cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 465191783Srmacklem if (hashpp != NULL) 466191783Srmacklem *hashpp = NULL; 467191783Srmacklem *bufpp = cnp->cn_pnbuf; 468191783Srmacklem} 469191783Srmacklem 470191783Srmacklem/* 471191783Srmacklem * Release the above path buffer, if not released by nfsvno_namei(). 472191783Srmacklem */ 473191783Srmacklemvoid 474191783Srmacklemnfsvno_relpathbuf(struct nameidata *ndp) 475191783Srmacklem{ 476191783Srmacklem 477191783Srmacklem if ((ndp->ni_cnd.cn_flags & HASBUF) == 0) 478191783Srmacklem panic("nfsrelpath"); 479191783Srmacklem uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 480191783Srmacklem ndp->ni_cnd.cn_flags &= ~HASBUF; 481191783Srmacklem} 482191783Srmacklem 483191783Srmacklem/* 484191783Srmacklem * Readlink vnode op into an mbuf list. 485191783Srmacklem */ 486191783Srmacklemint 487191783Srmacklemnfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p, 488191783Srmacklem struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 489191783Srmacklem{ 490191783Srmacklem struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; 491191783Srmacklem struct iovec *ivp = iv; 492191783Srmacklem struct uio io, *uiop = &io; 493191783Srmacklem struct mbuf *mp, *mp2 = NULL, *mp3 = NULL; 494191783Srmacklem int i, len, tlen, error; 495191783Srmacklem 496191783Srmacklem len = 0; 497191783Srmacklem i = 0; 498191783Srmacklem while (len < NFS_MAXPATHLEN) { 499191783Srmacklem NFSMGET(mp); 500191783Srmacklem MCLGET(mp, M_WAIT); 501191783Srmacklem mp->m_len = NFSMSIZ(mp); 502191783Srmacklem if (len == 0) { 503191783Srmacklem mp3 = mp2 = mp; 504191783Srmacklem } else { 505191783Srmacklem mp2->m_next = mp; 506191783Srmacklem mp2 = mp; 507191783Srmacklem } 508191783Srmacklem if ((len + mp->m_len) > NFS_MAXPATHLEN) { 509191783Srmacklem mp->m_len = NFS_MAXPATHLEN - len; 510191783Srmacklem len = NFS_MAXPATHLEN; 511191783Srmacklem } else { 512191783Srmacklem len += mp->m_len; 513191783Srmacklem } 514191783Srmacklem ivp->iov_base = mtod(mp, caddr_t); 515191783Srmacklem ivp->iov_len = mp->m_len; 516191783Srmacklem i++; 517191783Srmacklem ivp++; 518191783Srmacklem } 519191783Srmacklem uiop->uio_iov = iv; 520191783Srmacklem uiop->uio_iovcnt = i; 521191783Srmacklem uiop->uio_offset = 0; 522191783Srmacklem uiop->uio_resid = len; 523191783Srmacklem uiop->uio_rw = UIO_READ; 524191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 525191783Srmacklem uiop->uio_td = NULL; 526191783Srmacklem error = VOP_READLINK(vp, uiop, cred); 527191783Srmacklem if (error) { 528191783Srmacklem m_freem(mp3); 529191783Srmacklem *lenp = 0; 530191783Srmacklem return (error); 531191783Srmacklem } 532191783Srmacklem if (uiop->uio_resid > 0) { 533191783Srmacklem len -= uiop->uio_resid; 534191783Srmacklem tlen = NFSM_RNDUP(len); 535191783Srmacklem nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len); 536191783Srmacklem } 537191783Srmacklem *lenp = len; 538191783Srmacklem *mpp = mp3; 539191783Srmacklem *mpendp = mp; 540191783Srmacklem return (0); 541191783Srmacklem} 542191783Srmacklem 543191783Srmacklem/* 544191783Srmacklem * Read vnode op call into mbuf list. 545191783Srmacklem */ 546191783Srmacklemint 547191783Srmacklemnfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 548191783Srmacklem struct thread *p, struct mbuf **mpp, struct mbuf **mpendp) 549191783Srmacklem{ 550191783Srmacklem struct mbuf *m; 551191783Srmacklem int i; 552191783Srmacklem struct iovec *iv; 553191783Srmacklem struct iovec *iv2; 554191783Srmacklem int error = 0, len, left, siz, tlen, ioflag = 0, hi, try = 32; 555191783Srmacklem struct mbuf *m2 = NULL, *m3; 556191783Srmacklem struct uio io, *uiop = &io; 557191783Srmacklem struct nfsheur *nh; 558191783Srmacklem 559191783Srmacklem /* 560191783Srmacklem * Calculate seqcount for heuristic 561191783Srmacklem */ 562191783Srmacklem /* 563191783Srmacklem * Locate best candidate 564191783Srmacklem */ 565191783Srmacklem 566191783Srmacklem hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 567191783Srmacklem nh = &nfsheur[hi]; 568191783Srmacklem 569191783Srmacklem while (try--) { 570191783Srmacklem if (nfsheur[hi].nh_vp == vp) { 571191783Srmacklem nh = &nfsheur[hi]; 572191783Srmacklem break; 573191783Srmacklem } 574191783Srmacklem if (nfsheur[hi].nh_use > 0) 575191783Srmacklem --nfsheur[hi].nh_use; 576191783Srmacklem hi = (hi + 1) % NUM_HEURISTIC; 577191783Srmacklem if (nfsheur[hi].nh_use < nh->nh_use) 578191783Srmacklem nh = &nfsheur[hi]; 579191783Srmacklem } 580191783Srmacklem 581191783Srmacklem if (nh->nh_vp != vp) { 582191783Srmacklem nh->nh_vp = vp; 583191783Srmacklem nh->nh_nextr = off; 584191783Srmacklem nh->nh_use = NHUSE_INIT; 585191783Srmacklem if (off == 0) 586191783Srmacklem nh->nh_seqcount = 4; 587191783Srmacklem else 588191783Srmacklem nh->nh_seqcount = 1; 589191783Srmacklem } 590191783Srmacklem 591191783Srmacklem /* 592191783Srmacklem * Calculate heuristic 593191783Srmacklem */ 594191783Srmacklem 595191783Srmacklem if ((off == 0 && nh->nh_seqcount > 0) || off == nh->nh_nextr) { 596191783Srmacklem if (++nh->nh_seqcount > IO_SEQMAX) 597191783Srmacklem nh->nh_seqcount = IO_SEQMAX; 598191783Srmacklem } else if (nh->nh_seqcount > 1) { 599191783Srmacklem nh->nh_seqcount = 1; 600191783Srmacklem } else { 601191783Srmacklem nh->nh_seqcount = 0; 602191783Srmacklem } 603191783Srmacklem nh->nh_use += NHUSE_INC; 604191783Srmacklem if (nh->nh_use > NHUSE_MAX) 605191783Srmacklem nh->nh_use = NHUSE_MAX; 606191783Srmacklem ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 607191783Srmacklem 608191783Srmacklem len = left = NFSM_RNDUP(cnt); 609191783Srmacklem m3 = NULL; 610191783Srmacklem /* 611191783Srmacklem * Generate the mbuf list with the uio_iov ref. to it. 612191783Srmacklem */ 613191783Srmacklem i = 0; 614191783Srmacklem while (left > 0) { 615191783Srmacklem NFSMGET(m); 616191783Srmacklem MCLGET(m, M_WAIT); 617191783Srmacklem m->m_len = 0; 618191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 619191783Srmacklem left -= siz; 620191783Srmacklem i++; 621191783Srmacklem if (m3) 622191783Srmacklem m2->m_next = m; 623191783Srmacklem else 624191783Srmacklem m3 = m; 625191783Srmacklem m2 = m; 626191783Srmacklem } 627191783Srmacklem MALLOC(iv, struct iovec *, i * sizeof (struct iovec), 628191783Srmacklem M_TEMP, M_WAITOK); 629191783Srmacklem uiop->uio_iov = iv2 = iv; 630191783Srmacklem m = m3; 631191783Srmacklem left = len; 632191783Srmacklem i = 0; 633191783Srmacklem while (left > 0) { 634191783Srmacklem if (m == NULL) 635191783Srmacklem panic("nfsvno_read iov"); 636191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 637191783Srmacklem if (siz > 0) { 638191783Srmacklem iv->iov_base = mtod(m, caddr_t) + m->m_len; 639191783Srmacklem iv->iov_len = siz; 640191783Srmacklem m->m_len += siz; 641191783Srmacklem left -= siz; 642191783Srmacklem iv++; 643191783Srmacklem i++; 644191783Srmacklem } 645191783Srmacklem m = m->m_next; 646191783Srmacklem } 647191783Srmacklem uiop->uio_iovcnt = i; 648191783Srmacklem uiop->uio_offset = off; 649191783Srmacklem uiop->uio_resid = len; 650191783Srmacklem uiop->uio_rw = UIO_READ; 651191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 652191783Srmacklem error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 653191783Srmacklem FREE((caddr_t)iv2, M_TEMP); 654191783Srmacklem if (error) { 655191783Srmacklem m_freem(m3); 656191783Srmacklem *mpp = NULL; 657191783Srmacklem return (error); 658191783Srmacklem } 659191783Srmacklem tlen = len - uiop->uio_resid; 660191783Srmacklem cnt = cnt < tlen ? cnt : tlen; 661191783Srmacklem tlen = NFSM_RNDUP(cnt); 662191783Srmacklem if (tlen == 0) { 663191783Srmacklem m_freem(m3); 664191783Srmacklem m3 = NULL; 665191783Srmacklem } else if (len != tlen || tlen != cnt) 666191783Srmacklem nfsrv_adj(m3, len - tlen, tlen - cnt); 667191783Srmacklem *mpp = m3; 668191783Srmacklem *mpendp = m2; 669191783Srmacklem return (0); 670191783Srmacklem} 671191783Srmacklem 672191783Srmacklem/* 673191783Srmacklem * Write vnode op from an mbuf list. 674191783Srmacklem */ 675191783Srmacklemint 676191783Srmacklemnfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable, 677191783Srmacklem struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 678191783Srmacklem{ 679191783Srmacklem struct iovec *ivp; 680191783Srmacklem int i, len; 681191783Srmacklem struct iovec *iv; 682191783Srmacklem int ioflags, error; 683191783Srmacklem struct uio io, *uiop = &io; 684191783Srmacklem 685191783Srmacklem MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP, 686191783Srmacklem M_WAITOK); 687191783Srmacklem uiop->uio_iov = iv = ivp; 688191783Srmacklem uiop->uio_iovcnt = cnt; 689191783Srmacklem i = mtod(mp, caddr_t) + mp->m_len - cp; 690191783Srmacklem len = retlen; 691191783Srmacklem while (len > 0) { 692191783Srmacklem if (mp == NULL) 693191783Srmacklem panic("nfsvno_write"); 694191783Srmacklem if (i > 0) { 695191783Srmacklem i = min(i, len); 696191783Srmacklem ivp->iov_base = cp; 697191783Srmacklem ivp->iov_len = i; 698191783Srmacklem ivp++; 699191783Srmacklem len -= i; 700191783Srmacklem } 701191783Srmacklem mp = mp->m_next; 702191783Srmacklem if (mp) { 703191783Srmacklem i = mp->m_len; 704191783Srmacklem cp = mtod(mp, caddr_t); 705191783Srmacklem } 706191783Srmacklem } 707191783Srmacklem 708191783Srmacklem if (stable == NFSWRITE_UNSTABLE) 709191783Srmacklem ioflags = IO_NODELOCKED; 710191783Srmacklem else 711191783Srmacklem ioflags = (IO_SYNC | IO_NODELOCKED); 712191783Srmacklem uiop->uio_resid = retlen; 713191783Srmacklem uiop->uio_rw = UIO_WRITE; 714191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 715191783Srmacklem NFSUIOPROC(uiop, p); 716191783Srmacklem uiop->uio_offset = off; 717191783Srmacklem error = VOP_WRITE(vp, uiop, ioflags, cred); 718191783Srmacklem FREE((caddr_t)iv, M_TEMP); 719191783Srmacklem return (error); 720191783Srmacklem} 721191783Srmacklem 722191783Srmacklem/* 723191783Srmacklem * Common code for creating a regular file (plus special files for V2). 724191783Srmacklem */ 725191783Srmacklemint 726191783Srmacklemnfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 727191783Srmacklem struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 728199616Srmacklem int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp) 729191783Srmacklem{ 730191783Srmacklem u_quad_t tempsize; 731191783Srmacklem int error; 732191783Srmacklem 733191783Srmacklem error = nd->nd_repstat; 734191783Srmacklem if (!error && ndp->ni_vp == NULL) { 735191783Srmacklem if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 736191783Srmacklem vrele(ndp->ni_startdir); 737191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, 738191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 739191783Srmacklem vput(ndp->ni_dvp); 740191783Srmacklem nfsvno_relpathbuf(ndp); 741191783Srmacklem if (!error) { 742191783Srmacklem if (*exclusive_flagp) { 743191783Srmacklem *exclusive_flagp = 0; 744191783Srmacklem NFSVNO_ATTRINIT(nvap); 745199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 746199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 747191783Srmacklem error = VOP_SETATTR(ndp->ni_vp, 748191783Srmacklem &nvap->na_vattr, nd->nd_cred); 749191783Srmacklem } 750191783Srmacklem } 751191783Srmacklem /* 752191783Srmacklem * NFS V2 Only. nfsrvd_mknod() does this for V3. 753191783Srmacklem * (This implies, just get out on an error.) 754191783Srmacklem */ 755191783Srmacklem } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 756191783Srmacklem nvap->na_type == VFIFO) { 757191783Srmacklem if (nvap->na_type == VCHR && rdev == 0xffffffff) 758191783Srmacklem nvap->na_type = VFIFO; 759191783Srmacklem if (nvap->na_type != VFIFO && 760191783Srmacklem (error = priv_check_cred(nd->nd_cred, 761191783Srmacklem PRIV_VFS_MKNOD_DEV, 0))) { 762191783Srmacklem vrele(ndp->ni_startdir); 763191783Srmacklem nfsvno_relpathbuf(ndp); 764191783Srmacklem vput(ndp->ni_dvp); 765191783Srmacklem return (error); 766191783Srmacklem } 767191783Srmacklem nvap->na_rdev = rdev; 768191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 769191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 770191783Srmacklem vput(ndp->ni_dvp); 771191783Srmacklem nfsvno_relpathbuf(ndp); 772191783Srmacklem if (error) { 773191783Srmacklem vrele(ndp->ni_startdir); 774191783Srmacklem return (error); 775191783Srmacklem } 776191783Srmacklem } else { 777191783Srmacklem vrele(ndp->ni_startdir); 778191783Srmacklem nfsvno_relpathbuf(ndp); 779191783Srmacklem vput(ndp->ni_dvp); 780191783Srmacklem return (ENXIO); 781191783Srmacklem } 782191783Srmacklem *vpp = ndp->ni_vp; 783191783Srmacklem } else { 784191783Srmacklem /* 785191783Srmacklem * Handle cases where error is already set and/or 786191783Srmacklem * the file exists. 787191783Srmacklem * 1 - clean up the lookup 788191783Srmacklem * 2 - iff !error and na_size set, truncate it 789191783Srmacklem */ 790191783Srmacklem vrele(ndp->ni_startdir); 791191783Srmacklem nfsvno_relpathbuf(ndp); 792191783Srmacklem *vpp = ndp->ni_vp; 793191783Srmacklem if (ndp->ni_dvp == *vpp) 794191783Srmacklem vrele(ndp->ni_dvp); 795191783Srmacklem else 796191783Srmacklem vput(ndp->ni_dvp); 797191783Srmacklem if (!error && nvap->na_size != VNOVAL) { 798200999Srmacklem error = nfsvno_accchk(*vpp, VWRITE, 799191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 800200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 801191783Srmacklem if (!error) { 802191783Srmacklem tempsize = nvap->na_size; 803191783Srmacklem NFSVNO_ATTRINIT(nvap); 804191783Srmacklem nvap->na_size = tempsize; 805191783Srmacklem error = VOP_SETATTR(*vpp, 806191783Srmacklem &nvap->na_vattr, nd->nd_cred); 807191783Srmacklem } 808191783Srmacklem } 809191783Srmacklem if (error) 810191783Srmacklem vput(*vpp); 811191783Srmacklem } 812191783Srmacklem return (error); 813191783Srmacklem} 814191783Srmacklem 815191783Srmacklem/* 816191783Srmacklem * Do a mknod vnode op. 817191783Srmacklem */ 818191783Srmacklemint 819191783Srmacklemnfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, 820191783Srmacklem struct thread *p) 821191783Srmacklem{ 822191783Srmacklem int error = 0; 823191783Srmacklem enum vtype vtyp; 824191783Srmacklem 825191783Srmacklem vtyp = nvap->na_type; 826191783Srmacklem /* 827191783Srmacklem * Iff doesn't exist, create it. 828191783Srmacklem */ 829191783Srmacklem if (ndp->ni_vp) { 830191783Srmacklem vrele(ndp->ni_startdir); 831191783Srmacklem nfsvno_relpathbuf(ndp); 832191783Srmacklem vput(ndp->ni_dvp); 833191783Srmacklem vrele(ndp->ni_vp); 834191783Srmacklem return (EEXIST); 835191783Srmacklem } 836191783Srmacklem if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { 837191783Srmacklem vrele(ndp->ni_startdir); 838191783Srmacklem nfsvno_relpathbuf(ndp); 839191783Srmacklem vput(ndp->ni_dvp); 840191783Srmacklem return (NFSERR_BADTYPE); 841191783Srmacklem } 842191783Srmacklem if (vtyp == VSOCK) { 843191783Srmacklem vrele(ndp->ni_startdir); 844191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, 845191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 846191783Srmacklem vput(ndp->ni_dvp); 847191783Srmacklem nfsvno_relpathbuf(ndp); 848191783Srmacklem } else { 849191783Srmacklem if (nvap->na_type != VFIFO && 850191783Srmacklem (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) { 851191783Srmacklem vrele(ndp->ni_startdir); 852191783Srmacklem nfsvno_relpathbuf(ndp); 853191783Srmacklem vput(ndp->ni_dvp); 854191783Srmacklem return (error); 855191783Srmacklem } 856191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 857191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 858191783Srmacklem vput(ndp->ni_dvp); 859191783Srmacklem nfsvno_relpathbuf(ndp); 860216898Srmacklem vrele(ndp->ni_startdir); 861191783Srmacklem /* 862191783Srmacklem * Since VOP_MKNOD returns the ni_vp, I can't 863191783Srmacklem * see any reason to do the lookup. 864191783Srmacklem */ 865191783Srmacklem } 866191783Srmacklem return (error); 867191783Srmacklem} 868191783Srmacklem 869191783Srmacklem/* 870191783Srmacklem * Mkdir vnode op. 871191783Srmacklem */ 872191783Srmacklemint 873191783Srmacklemnfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, 874191783Srmacklem struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 875191783Srmacklem{ 876191783Srmacklem int error = 0; 877191783Srmacklem 878191783Srmacklem if (ndp->ni_vp != NULL) { 879191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 880191783Srmacklem vrele(ndp->ni_dvp); 881191783Srmacklem else 882191783Srmacklem vput(ndp->ni_dvp); 883191783Srmacklem vrele(ndp->ni_vp); 884206063Srmacklem nfsvno_relpathbuf(ndp); 885191783Srmacklem return (EEXIST); 886191783Srmacklem } 887191783Srmacklem error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 888191783Srmacklem &nvap->na_vattr); 889191783Srmacklem vput(ndp->ni_dvp); 890191783Srmacklem nfsvno_relpathbuf(ndp); 891191783Srmacklem return (error); 892191783Srmacklem} 893191783Srmacklem 894191783Srmacklem/* 895191783Srmacklem * symlink vnode op. 896191783Srmacklem */ 897191783Srmacklemint 898191783Srmacklemnfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, 899191783Srmacklem int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, 900191783Srmacklem struct nfsexstuff *exp) 901191783Srmacklem{ 902191783Srmacklem int error = 0; 903191783Srmacklem 904191783Srmacklem if (ndp->ni_vp) { 905191783Srmacklem vrele(ndp->ni_startdir); 906191783Srmacklem nfsvno_relpathbuf(ndp); 907191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 908191783Srmacklem vrele(ndp->ni_dvp); 909191783Srmacklem else 910191783Srmacklem vput(ndp->ni_dvp); 911191783Srmacklem vrele(ndp->ni_vp); 912191783Srmacklem return (EEXIST); 913191783Srmacklem } 914191783Srmacklem 915191783Srmacklem error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 916191783Srmacklem &nvap->na_vattr, pathcp); 917191783Srmacklem vput(ndp->ni_dvp); 918191783Srmacklem vrele(ndp->ni_startdir); 919191783Srmacklem nfsvno_relpathbuf(ndp); 920191783Srmacklem /* 921191783Srmacklem * Although FreeBSD still had the lookup code in 922191783Srmacklem * it for 7/current, there doesn't seem to be any 923191783Srmacklem * point, since VOP_SYMLINK() returns the ni_vp. 924191783Srmacklem * Just vput it for v2. 925191783Srmacklem */ 926191783Srmacklem if (!not_v2 && !error) 927191783Srmacklem vput(ndp->ni_vp); 928191783Srmacklem return (error); 929191783Srmacklem} 930191783Srmacklem 931191783Srmacklem/* 932191783Srmacklem * Parse symbolic link arguments. 933191783Srmacklem * This function has an ugly side effect. It will MALLOC() an area for 934191783Srmacklem * the symlink and set iov_base to point to it, only if it succeeds. 935191783Srmacklem * So, if it returns with uiop->uio_iov->iov_base != NULL, that must 936191783Srmacklem * be FREE'd later. 937191783Srmacklem */ 938191783Srmacklemint 939191783Srmacklemnfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, 940191783Srmacklem struct thread *p, char **pathcpp, int *lenp) 941191783Srmacklem{ 942191783Srmacklem u_int32_t *tl; 943191783Srmacklem char *pathcp = NULL; 944191783Srmacklem int error = 0, len; 945191783Srmacklem struct nfsv2_sattr *sp; 946191783Srmacklem 947191783Srmacklem *pathcpp = NULL; 948191783Srmacklem *lenp = 0; 949191783Srmacklem if ((nd->nd_flag & ND_NFSV3) && 950191783Srmacklem (error = nfsrv_sattr(nd, nvap, NULL, NULL, p))) 951191783Srmacklem goto nfsmout; 952191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 953191783Srmacklem len = fxdr_unsigned(int, *tl); 954191783Srmacklem if (len > NFS_MAXPATHLEN || len <= 0) { 955191783Srmacklem error = EBADRPC; 956191783Srmacklem goto nfsmout; 957191783Srmacklem } 958191783Srmacklem MALLOC(pathcp, caddr_t, len + 1, M_TEMP, M_WAITOK); 959191783Srmacklem error = nfsrv_mtostr(nd, pathcp, len); 960191783Srmacklem if (error) 961191783Srmacklem goto nfsmout; 962191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 963191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 964191783Srmacklem nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); 965191783Srmacklem } 966191783Srmacklem *pathcpp = pathcp; 967191783Srmacklem *lenp = len; 968191783Srmacklem return (0); 969191783Srmacklemnfsmout: 970191783Srmacklem if (pathcp) 971191783Srmacklem free(pathcp, M_TEMP); 972191783Srmacklem return (error); 973191783Srmacklem} 974191783Srmacklem 975191783Srmacklem/* 976191783Srmacklem * Remove a non-directory object. 977191783Srmacklem */ 978191783Srmacklemint 979191783Srmacklemnfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred, 980191783Srmacklem struct thread *p, struct nfsexstuff *exp) 981191783Srmacklem{ 982191783Srmacklem struct vnode *vp; 983191783Srmacklem int error = 0; 984191783Srmacklem 985191783Srmacklem vp = ndp->ni_vp; 986191783Srmacklem if (vp->v_type == VDIR) 987191783Srmacklem error = NFSERR_ISDIR; 988191783Srmacklem else if (is_v4) 989191783Srmacklem error = nfsrv_checkremove(vp, 1, p); 990191783Srmacklem if (!error) 991191783Srmacklem error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); 992191783Srmacklem if (ndp->ni_dvp == vp) 993191783Srmacklem vrele(ndp->ni_dvp); 994191783Srmacklem else 995191783Srmacklem vput(ndp->ni_dvp); 996191783Srmacklem vput(vp); 997191783Srmacklem return (error); 998191783Srmacklem} 999191783Srmacklem 1000191783Srmacklem/* 1001191783Srmacklem * Remove a directory. 1002191783Srmacklem */ 1003191783Srmacklemint 1004191783Srmacklemnfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1005191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1006191783Srmacklem{ 1007191783Srmacklem struct vnode *vp; 1008191783Srmacklem int error = 0; 1009191783Srmacklem 1010191783Srmacklem vp = ndp->ni_vp; 1011191783Srmacklem if (vp->v_type != VDIR) { 1012191783Srmacklem error = ENOTDIR; 1013191783Srmacklem goto out; 1014191783Srmacklem } 1015191783Srmacklem /* 1016191783Srmacklem * No rmdir "." please. 1017191783Srmacklem */ 1018191783Srmacklem if (ndp->ni_dvp == vp) { 1019191783Srmacklem error = EINVAL; 1020191783Srmacklem goto out; 1021191783Srmacklem } 1022191783Srmacklem /* 1023191783Srmacklem * The root of a mounted filesystem cannot be deleted. 1024191783Srmacklem */ 1025191783Srmacklem if (vp->v_vflag & VV_ROOT) 1026191783Srmacklem error = EBUSY; 1027191783Srmacklemout: 1028191783Srmacklem if (!error) 1029191783Srmacklem error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); 1030191783Srmacklem if (ndp->ni_dvp == vp) 1031191783Srmacklem vrele(ndp->ni_dvp); 1032191783Srmacklem else 1033191783Srmacklem vput(ndp->ni_dvp); 1034191783Srmacklem vput(vp); 1035191783Srmacklem return (error); 1036191783Srmacklem} 1037191783Srmacklem 1038191783Srmacklem/* 1039191783Srmacklem * Rename vnode op. 1040191783Srmacklem */ 1041191783Srmacklemint 1042191783Srmacklemnfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, 1043191783Srmacklem u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p) 1044191783Srmacklem{ 1045191783Srmacklem struct vnode *fvp, *tvp, *tdvp; 1046191783Srmacklem int error = 0; 1047191783Srmacklem 1048191783Srmacklem fvp = fromndp->ni_vp; 1049191783Srmacklem if (ndstat) { 1050191783Srmacklem vrele(fromndp->ni_dvp); 1051191783Srmacklem vrele(fvp); 1052191783Srmacklem error = ndstat; 1053191783Srmacklem goto out1; 1054191783Srmacklem } 1055191783Srmacklem tdvp = tondp->ni_dvp; 1056191783Srmacklem tvp = tondp->ni_vp; 1057191783Srmacklem if (tvp != NULL) { 1058191783Srmacklem if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1059191783Srmacklem error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST; 1060191783Srmacklem goto out; 1061191783Srmacklem } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1062191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST; 1063191783Srmacklem goto out; 1064191783Srmacklem } 1065191783Srmacklem if (tvp->v_type == VDIR && tvp->v_mountedhere) { 1066191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1067191783Srmacklem goto out; 1068191783Srmacklem } 1069191783Srmacklem 1070191783Srmacklem /* 1071191783Srmacklem * A rename to '.' or '..' results in a prematurely 1072191783Srmacklem * unlocked vnode on FreeBSD5, so I'm just going to fail that 1073191783Srmacklem * here. 1074191783Srmacklem */ 1075191783Srmacklem if ((tondp->ni_cnd.cn_namelen == 1 && 1076191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.') || 1077191783Srmacklem (tondp->ni_cnd.cn_namelen == 2 && 1078191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.' && 1079191783Srmacklem tondp->ni_cnd.cn_nameptr[1] == '.')) { 1080191783Srmacklem error = EINVAL; 1081191783Srmacklem goto out; 1082191783Srmacklem } 1083191783Srmacklem } 1084191783Srmacklem if (fvp->v_type == VDIR && fvp->v_mountedhere) { 1085191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1086191783Srmacklem goto out; 1087191783Srmacklem } 1088191783Srmacklem if (fvp->v_mount != tdvp->v_mount) { 1089191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1090191783Srmacklem goto out; 1091191783Srmacklem } 1092191783Srmacklem if (fvp == tdvp) { 1093191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL; 1094191783Srmacklem goto out; 1095191783Srmacklem } 1096191783Srmacklem if (fvp == tvp) { 1097191783Srmacklem /* 1098191783Srmacklem * If source and destination are the same, there is nothing to 1099191783Srmacklem * do. Set error to -1 to indicate this. 1100191783Srmacklem */ 1101191783Srmacklem error = -1; 1102191783Srmacklem goto out; 1103191783Srmacklem } 1104191783Srmacklem if (ndflag & ND_NFSV4) { 1105216893Srmacklem if (vn_lock(fvp, LK_EXCLUSIVE) == 0) { 1106216893Srmacklem error = nfsrv_checkremove(fvp, 0, p); 1107216893Srmacklem VOP_UNLOCK(fvp, 0); 1108216893Srmacklem } else 1109216893Srmacklem error = EPERM; 1110191783Srmacklem if (tvp && !error) 1111191783Srmacklem error = nfsrv_checkremove(tvp, 1, p); 1112191783Srmacklem } else { 1113191783Srmacklem /* 1114191783Srmacklem * For NFSv2 and NFSv3, try to get rid of the delegation, so 1115191783Srmacklem * that the NFSv4 client won't be confused by the rename. 1116191783Srmacklem * Since nfsd_recalldelegation() can only be called on an 1117191783Srmacklem * unlocked vnode at this point and fvp is the file that will 1118191783Srmacklem * still exist after the rename, just do fvp. 1119191783Srmacklem */ 1120191783Srmacklem nfsd_recalldelegation(fvp, p); 1121191783Srmacklem } 1122191783Srmacklemout: 1123191783Srmacklem if (!error) { 1124191783Srmacklem error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, 1125191783Srmacklem &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, 1126191783Srmacklem &tondp->ni_cnd); 1127191783Srmacklem } else { 1128191783Srmacklem if (tdvp == tvp) 1129191783Srmacklem vrele(tdvp); 1130191783Srmacklem else 1131191783Srmacklem vput(tdvp); 1132191783Srmacklem if (tvp) 1133191783Srmacklem vput(tvp); 1134191783Srmacklem vrele(fromndp->ni_dvp); 1135191783Srmacklem vrele(fvp); 1136191783Srmacklem if (error == -1) 1137191783Srmacklem error = 0; 1138191783Srmacklem } 1139191783Srmacklem vrele(tondp->ni_startdir); 1140191783Srmacklem nfsvno_relpathbuf(tondp); 1141191783Srmacklemout1: 1142191783Srmacklem vrele(fromndp->ni_startdir); 1143191783Srmacklem nfsvno_relpathbuf(fromndp); 1144191783Srmacklem return (error); 1145191783Srmacklem} 1146191783Srmacklem 1147191783Srmacklem/* 1148191783Srmacklem * Link vnode op. 1149191783Srmacklem */ 1150191783Srmacklemint 1151191783Srmacklemnfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred, 1152191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1153191783Srmacklem{ 1154191783Srmacklem struct vnode *xp; 1155191783Srmacklem int error = 0; 1156191783Srmacklem 1157191783Srmacklem xp = ndp->ni_vp; 1158191783Srmacklem if (xp != NULL) { 1159191783Srmacklem error = EEXIST; 1160191783Srmacklem } else { 1161191783Srmacklem xp = ndp->ni_dvp; 1162191783Srmacklem if (vp->v_mount != xp->v_mount) 1163191783Srmacklem error = EXDEV; 1164191783Srmacklem } 1165191783Srmacklem if (!error) { 1166216893Srmacklem vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 1167216893Srmacklem if ((vp->v_iflag & VI_DOOMED) == 0) 1168216893Srmacklem error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); 1169216893Srmacklem else 1170216893Srmacklem error = EPERM; 1171191783Srmacklem if (ndp->ni_dvp == vp) 1172191783Srmacklem vrele(ndp->ni_dvp); 1173191783Srmacklem else 1174191783Srmacklem vput(ndp->ni_dvp); 1175216893Srmacklem VOP_UNLOCK(vp, 0); 1176191783Srmacklem } else { 1177191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1178191783Srmacklem vrele(ndp->ni_dvp); 1179191783Srmacklem else 1180191783Srmacklem vput(ndp->ni_dvp); 1181191783Srmacklem if (ndp->ni_vp) 1182191783Srmacklem vrele(ndp->ni_vp); 1183191783Srmacklem } 1184191783Srmacklem nfsvno_relpathbuf(ndp); 1185191783Srmacklem return (error); 1186191783Srmacklem} 1187191783Srmacklem 1188191783Srmacklem/* 1189191783Srmacklem * Do the fsync() appropriate for the commit. 1190191783Srmacklem */ 1191191783Srmacklemint 1192191783Srmacklemnfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, 1193191783Srmacklem struct thread *td) 1194191783Srmacklem{ 1195191783Srmacklem int error = 0; 1196191783Srmacklem 1197191783Srmacklem if (cnt > MAX_COMMIT_COUNT) { 1198191783Srmacklem /* 1199191783Srmacklem * Give up and do the whole thing 1200191783Srmacklem */ 1201191783Srmacklem if (vp->v_object && 1202191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1203191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1204191783Srmacklem vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC); 1205191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1206191783Srmacklem } 1207191783Srmacklem error = VOP_FSYNC(vp, MNT_WAIT, td); 1208191783Srmacklem } else { 1209191783Srmacklem /* 1210191783Srmacklem * Locate and synchronously write any buffers that fall 1211191783Srmacklem * into the requested range. Note: we are assuming that 1212191783Srmacklem * f_iosize is a power of 2. 1213191783Srmacklem */ 1214191783Srmacklem int iosize = vp->v_mount->mnt_stat.f_iosize; 1215191783Srmacklem int iomask = iosize - 1; 1216191783Srmacklem struct bufobj *bo; 1217191783Srmacklem daddr_t lblkno; 1218191783Srmacklem 1219191783Srmacklem /* 1220191783Srmacklem * Align to iosize boundry, super-align to page boundry. 1221191783Srmacklem */ 1222191783Srmacklem if (off & iomask) { 1223191783Srmacklem cnt += off & iomask; 1224191783Srmacklem off &= ~(u_quad_t)iomask; 1225191783Srmacklem } 1226191783Srmacklem if (off & PAGE_MASK) { 1227191783Srmacklem cnt += off & PAGE_MASK; 1228191783Srmacklem off &= ~(u_quad_t)PAGE_MASK; 1229191783Srmacklem } 1230191783Srmacklem lblkno = off / iosize; 1231191783Srmacklem 1232191783Srmacklem if (vp->v_object && 1233191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1234191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1235191783Srmacklem vm_object_page_clean(vp->v_object, off / PAGE_SIZE, (cnt + PAGE_MASK) / PAGE_SIZE, OBJPC_SYNC); 1236191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1237191783Srmacklem } 1238191783Srmacklem 1239191783Srmacklem bo = &vp->v_bufobj; 1240191783Srmacklem BO_LOCK(bo); 1241191783Srmacklem while (cnt > 0) { 1242191783Srmacklem struct buf *bp; 1243191783Srmacklem 1244191783Srmacklem /* 1245191783Srmacklem * If we have a buffer and it is marked B_DELWRI we 1246191783Srmacklem * have to lock and write it. Otherwise the prior 1247191783Srmacklem * write is assumed to have already been committed. 1248191783Srmacklem * 1249191783Srmacklem * gbincore() can return invalid buffers now so we 1250191783Srmacklem * have to check that bit as well (though B_DELWRI 1251191783Srmacklem * should not be set if B_INVAL is set there could be 1252191783Srmacklem * a race here since we haven't locked the buffer). 1253191783Srmacklem */ 1254191783Srmacklem if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { 1255191783Srmacklem if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | 1256191783Srmacklem LK_INTERLOCK, BO_MTX(bo)) == ENOLCK) { 1257191783Srmacklem BO_LOCK(bo); 1258191783Srmacklem continue; /* retry */ 1259191783Srmacklem } 1260191783Srmacklem if ((bp->b_flags & (B_DELWRI|B_INVAL)) == 1261191783Srmacklem B_DELWRI) { 1262191783Srmacklem bremfree(bp); 1263191783Srmacklem bp->b_flags &= ~B_ASYNC; 1264191783Srmacklem bwrite(bp); 1265191783Srmacklem ++nfs_commit_miss; 1266191783Srmacklem } else 1267191783Srmacklem BUF_UNLOCK(bp); 1268191783Srmacklem BO_LOCK(bo); 1269191783Srmacklem } 1270191783Srmacklem ++nfs_commit_blks; 1271191783Srmacklem if (cnt < iosize) 1272191783Srmacklem break; 1273191783Srmacklem cnt -= iosize; 1274191783Srmacklem ++lblkno; 1275191783Srmacklem } 1276191783Srmacklem BO_UNLOCK(bo); 1277191783Srmacklem } 1278191783Srmacklem return (error); 1279191783Srmacklem} 1280191783Srmacklem 1281191783Srmacklem/* 1282191783Srmacklem * Statfs vnode op. 1283191783Srmacklem */ 1284191783Srmacklemint 1285191990Sattilionfsvno_statfs(struct vnode *vp, struct statfs *sf) 1286191783Srmacklem{ 1287191783Srmacklem 1288191990Sattilio return (VFS_STATFS(vp->v_mount, sf)); 1289191783Srmacklem} 1290191783Srmacklem 1291191783Srmacklem/* 1292191783Srmacklem * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1293191783Srmacklem * must handle nfsrv_opencheck() calls after any other access checks. 1294191783Srmacklem */ 1295191783Srmacklemvoid 1296191783Srmacklemnfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1297191783Srmacklem nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1298199616Srmacklem int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, 1299191783Srmacklem NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p, 1300191783Srmacklem struct nfsexstuff *exp, struct vnode **vpp) 1301191783Srmacklem{ 1302191783Srmacklem struct vnode *vp = NULL; 1303191783Srmacklem u_quad_t tempsize; 1304191783Srmacklem struct nfsexstuff nes; 1305191783Srmacklem 1306191783Srmacklem if (ndp->ni_vp == NULL) 1307191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1308191783Srmacklem stateidp, stp, NULL, nd, p, nd->nd_repstat); 1309191783Srmacklem if (!nd->nd_repstat) { 1310191783Srmacklem if (ndp->ni_vp == NULL) { 1311191783Srmacklem vrele(ndp->ni_startdir); 1312191783Srmacklem nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1313191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1314191783Srmacklem vput(ndp->ni_dvp); 1315191783Srmacklem nfsvno_relpathbuf(ndp); 1316191783Srmacklem if (!nd->nd_repstat) { 1317191783Srmacklem if (*exclusive_flagp) { 1318191783Srmacklem *exclusive_flagp = 0; 1319191783Srmacklem NFSVNO_ATTRINIT(nvap); 1320199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 1321199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 1322191783Srmacklem nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1323191783Srmacklem &nvap->na_vattr, cred); 1324191783Srmacklem } else { 1325191783Srmacklem nfsrv_fixattr(nd, ndp->ni_vp, nvap, 1326191783Srmacklem aclp, p, attrbitp, exp); 1327191783Srmacklem } 1328191783Srmacklem } 1329191783Srmacklem vp = ndp->ni_vp; 1330191783Srmacklem } else { 1331191783Srmacklem if (ndp->ni_startdir) 1332191783Srmacklem vrele(ndp->ni_startdir); 1333191783Srmacklem nfsvno_relpathbuf(ndp); 1334191783Srmacklem vp = ndp->ni_vp; 1335191783Srmacklem if (create == NFSV4OPEN_CREATE) { 1336191783Srmacklem if (ndp->ni_dvp == vp) 1337191783Srmacklem vrele(ndp->ni_dvp); 1338191783Srmacklem else 1339191783Srmacklem vput(ndp->ni_dvp); 1340191783Srmacklem } 1341191783Srmacklem if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 1342191783Srmacklem if (ndp->ni_cnd.cn_flags & RDONLY) 1343191783Srmacklem NFSVNO_SETEXRDONLY(&nes); 1344191783Srmacklem else 1345191783Srmacklem NFSVNO_EXINIT(&nes); 1346191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, 1347200999Srmacklem VWRITE, cred, &nes, p, 1348200999Srmacklem NFSACCCHK_NOOVERRIDE, 1349200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1350191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1351191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1352191783Srmacklem if (!nd->nd_repstat) { 1353191783Srmacklem tempsize = nvap->na_size; 1354191783Srmacklem NFSVNO_ATTRINIT(nvap); 1355191783Srmacklem nvap->na_size = tempsize; 1356191783Srmacklem nd->nd_repstat = VOP_SETATTR(vp, 1357191783Srmacklem &nvap->na_vattr, cred); 1358191783Srmacklem } 1359191783Srmacklem } else if (vp->v_type == VREG) { 1360191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1361191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1362191783Srmacklem } 1363191783Srmacklem } 1364191783Srmacklem } else { 1365191783Srmacklem if (ndp->ni_cnd.cn_flags & HASBUF) 1366191783Srmacklem nfsvno_relpathbuf(ndp); 1367191783Srmacklem if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) { 1368191783Srmacklem vrele(ndp->ni_startdir); 1369191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1370191783Srmacklem vrele(ndp->ni_dvp); 1371191783Srmacklem else 1372191783Srmacklem vput(ndp->ni_dvp); 1373191783Srmacklem if (ndp->ni_vp) 1374191783Srmacklem vput(ndp->ni_vp); 1375191783Srmacklem } 1376191783Srmacklem } 1377191783Srmacklem *vpp = vp; 1378191783Srmacklem} 1379191783Srmacklem 1380191783Srmacklem/* 1381191783Srmacklem * Updates the file rev and sets the mtime and ctime 1382191783Srmacklem * to the current clock time, returning the va_filerev and va_Xtime 1383191783Srmacklem * values. 1384191783Srmacklem */ 1385191783Srmacklemvoid 1386191783Srmacklemnfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 1387191783Srmacklem struct ucred *cred, struct thread *p) 1388191783Srmacklem{ 1389191783Srmacklem struct vattr va; 1390191783Srmacklem 1391191783Srmacklem VATTR_NULL(&va); 1392191783Srmacklem getnanotime(&va.va_mtime); 1393191783Srmacklem (void) VOP_SETATTR(vp, &va, cred); 1394216693Srmacklem (void) nfsvno_getattr(vp, nvap, cred, p, 1); 1395191783Srmacklem} 1396191783Srmacklem 1397191783Srmacklem/* 1398191783Srmacklem * Glue routine to nfsv4_fillattr(). 1399191783Srmacklem */ 1400191783Srmacklemint 1401191783Srmacklemnfsvno_fillattr(struct nfsrv_descript *nd, struct vnode *vp, 1402191783Srmacklem struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 1403191783Srmacklem struct ucred *cred, struct thread *p, int isdgram, int reterr) 1404191783Srmacklem{ 1405191783Srmacklem int error; 1406191783Srmacklem 1407191783Srmacklem error = nfsv4_fillattr(nd, vp, NULL, &nvap->na_vattr, fhp, rderror, 1408191783Srmacklem attrbitp, cred, p, isdgram, reterr); 1409191783Srmacklem return (error); 1410191783Srmacklem} 1411191783Srmacklem 1412191783Srmacklem/* Since the Readdir vnode ops vary, put the entire functions in here. */ 1413191783Srmacklem/* 1414191783Srmacklem * nfs readdir service 1415191783Srmacklem * - mallocs what it thinks is enough to read 1416191783Srmacklem * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 1417206170Srmacklem * - calls VOP_READDIR() 1418191783Srmacklem * - loops around building the reply 1419191783Srmacklem * if the output generated exceeds count break out of loop 1420191783Srmacklem * The NFSM_CLGET macro is used here so that the reply will be packed 1421191783Srmacklem * tightly in mbuf clusters. 1422191783Srmacklem * - it trims out records with d_fileno == 0 1423191783Srmacklem * this doesn't matter for Unix clients, but they might confuse clients 1424191783Srmacklem * for other os'. 1425191783Srmacklem * - it trims out records with d_type == DT_WHT 1426191783Srmacklem * these cannot be seen through NFS (unless we extend the protocol) 1427191783Srmacklem * The alternate call nfsrvd_readdirplus() does lookups as well. 1428191783Srmacklem * PS: The NFS protocol spec. does not clarify what the "count" byte 1429191783Srmacklem * argument is a count of.. just name strings and file id's or the 1430191783Srmacklem * entire reply rpc or ... 1431191783Srmacklem * I tried just file name and id sizes and it confused the Sun client, 1432191783Srmacklem * so I am using the full rpc size now. The "paranoia.." comment refers 1433191783Srmacklem * to including the status longwords that are not a part of the dir. 1434191783Srmacklem * "entry" structures, but are in the rpc. 1435191783Srmacklem */ 1436191783Srmacklemint 1437191783Srmacklemnfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 1438191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1439191783Srmacklem{ 1440191783Srmacklem struct dirent *dp; 1441191783Srmacklem u_int32_t *tl; 1442191783Srmacklem int dirlen; 1443191783Srmacklem char *cpos, *cend, *rbuf; 1444191783Srmacklem struct nfsvattr at; 1445191783Srmacklem int nlen, error = 0, getret = 1; 1446191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies; 1447191783Srmacklem u_int64_t off, toff, verf; 1448191783Srmacklem u_long *cookies = NULL, *cookiep; 1449191783Srmacklem struct uio io; 1450191783Srmacklem struct iovec iv; 1451216691Srmacklem int not_zfs; 1452191783Srmacklem 1453191783Srmacklem if (nd->nd_repstat) { 1454191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1455191783Srmacklem return (0); 1456191783Srmacklem } 1457191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1458191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1459191783Srmacklem off = fxdr_unsigned(u_quad_t, *tl++); 1460191783Srmacklem } else { 1461191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1462191783Srmacklem off = fxdr_hyper(tl); 1463191783Srmacklem tl += 2; 1464191783Srmacklem verf = fxdr_hyper(tl); 1465191783Srmacklem tl += 2; 1466191783Srmacklem } 1467191783Srmacklem toff = off; 1468191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1469206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1470191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1471191783Srmacklem siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1472191783Srmacklem fullsiz = siz; 1473191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1474191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, 1475216693Srmacklem p, 1); 1476191783Srmacklem#if 0 1477191783Srmacklem /* 1478191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1479191783Srmacklem * since it is not supposed to change when entries are 1480191783Srmacklem * removed/added unless that offset cookies returned to 1481191783Srmacklem * the client are no longer valid. 1482191783Srmacklem */ 1483191783Srmacklem if (!nd->nd_repstat && toff && verf != at.na_filerev) 1484191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1485191783Srmacklem#endif 1486191783Srmacklem } 1487206170Srmacklem if (nd->nd_repstat == 0 && cnt == 0) { 1488206170Srmacklem if (nd->nd_flag & ND_NFSV2) 1489206170Srmacklem /* NFSv2 does not have NFSERR_TOOSMALL */ 1490206170Srmacklem nd->nd_repstat = EPERM; 1491206170Srmacklem else 1492206170Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1493206170Srmacklem } 1494191783Srmacklem if (!nd->nd_repstat) 1495200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1496191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1497200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1498191783Srmacklem if (nd->nd_repstat) { 1499191783Srmacklem vput(vp); 1500191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1501191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1502191783Srmacklem return (0); 1503191783Srmacklem } 1504216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1505191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1506191783Srmacklemagain: 1507191783Srmacklem eofflag = 0; 1508191783Srmacklem if (cookies) { 1509191783Srmacklem free((caddr_t)cookies, M_TEMP); 1510191783Srmacklem cookies = NULL; 1511191783Srmacklem } 1512191783Srmacklem 1513191783Srmacklem iv.iov_base = rbuf; 1514191783Srmacklem iv.iov_len = siz; 1515191783Srmacklem io.uio_iov = &iv; 1516191783Srmacklem io.uio_iovcnt = 1; 1517191783Srmacklem io.uio_offset = (off_t)off; 1518191783Srmacklem io.uio_resid = siz; 1519191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1520191783Srmacklem io.uio_rw = UIO_READ; 1521191783Srmacklem io.uio_td = NULL; 1522191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1523191783Srmacklem &cookies); 1524191783Srmacklem off = (u_int64_t)io.uio_offset; 1525191783Srmacklem if (io.uio_resid) 1526191783Srmacklem siz -= io.uio_resid; 1527191783Srmacklem 1528191783Srmacklem if (!cookies && !nd->nd_repstat) 1529191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1530191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1531216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1532191783Srmacklem if (!nd->nd_repstat) 1533191783Srmacklem nd->nd_repstat = getret; 1534191783Srmacklem } 1535191783Srmacklem 1536191783Srmacklem /* 1537191783Srmacklem * Handles the failed cases. nd->nd_repstat == 0 past here. 1538191783Srmacklem */ 1539191783Srmacklem if (nd->nd_repstat) { 1540216692Srmacklem vput(vp); 1541191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1542191783Srmacklem if (cookies) 1543191783Srmacklem free((caddr_t)cookies, M_TEMP); 1544191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1545191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1546191783Srmacklem return (0); 1547191783Srmacklem } 1548191783Srmacklem /* 1549191783Srmacklem * If nothing read, return eof 1550191783Srmacklem * rpc reply 1551191783Srmacklem */ 1552191783Srmacklem if (siz == 0) { 1553216692Srmacklem vput(vp); 1554191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1555191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1556191783Srmacklem } else { 1557191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1558191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1559191783Srmacklem txdr_hyper(at.na_filerev, tl); 1560191783Srmacklem tl += 2; 1561191783Srmacklem } 1562191783Srmacklem *tl++ = newnfs_false; 1563191783Srmacklem *tl = newnfs_true; 1564191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1565191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1566191783Srmacklem return (0); 1567191783Srmacklem } 1568191783Srmacklem 1569191783Srmacklem /* 1570191783Srmacklem * Check for degenerate cases of nothing useful read. 1571191783Srmacklem * If so go try again 1572191783Srmacklem */ 1573191783Srmacklem cpos = rbuf; 1574191783Srmacklem cend = rbuf + siz; 1575191783Srmacklem dp = (struct dirent *)cpos; 1576191783Srmacklem cookiep = cookies; 1577191783Srmacklem 1578191783Srmacklem /* 1579191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1580191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1581191783Srmacklem * skip over the records that precede the requested offset. This 1582191783Srmacklem * requires the assumption that file offset cookies monotonically 1583191783Srmacklem * increase. 1584216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1585216691Srmacklem * this is not done when ZFS is the file system. 1586191783Srmacklem */ 1587191783Srmacklem while (cpos < cend && ncookies > 0 && 1588191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1589216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff))) { 1590191783Srmacklem cpos += dp->d_reclen; 1591191783Srmacklem dp = (struct dirent *)cpos; 1592191783Srmacklem cookiep++; 1593191783Srmacklem ncookies--; 1594191783Srmacklem } 1595191783Srmacklem if (cpos >= cend || ncookies == 0) { 1596191783Srmacklem siz = fullsiz; 1597191783Srmacklem toff = off; 1598191783Srmacklem goto again; 1599191783Srmacklem } 1600216692Srmacklem vput(vp); 1601191783Srmacklem 1602191783Srmacklem /* 1603191783Srmacklem * dirlen is the size of the reply, including all XDR and must 1604191783Srmacklem * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 1605191783Srmacklem * if the XDR should be included in "count", but to be safe, we do. 1606191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now.) 1607191783Srmacklem */ 1608191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1609191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1610191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1611191783Srmacklem txdr_hyper(at.na_filerev, tl); 1612191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1613191783Srmacklem } else { 1614191783Srmacklem dirlen = 2 * NFSX_UNSIGNED; 1615191783Srmacklem } 1616191783Srmacklem 1617191783Srmacklem /* Loop through the records and build reply */ 1618191783Srmacklem while (cpos < cend && ncookies > 0) { 1619191783Srmacklem nlen = dp->d_namlen; 1620191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1621191783Srmacklem nlen <= NFS_MAXNAMLEN) { 1622191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1623191783Srmacklem dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1624191783Srmacklem else 1625191783Srmacklem dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1626191783Srmacklem if (dirlen > cnt) { 1627191783Srmacklem eofflag = 0; 1628191783Srmacklem break; 1629191783Srmacklem } 1630191783Srmacklem 1631191783Srmacklem /* 1632191783Srmacklem * Build the directory record xdr from 1633191783Srmacklem * the dirent entry. 1634191783Srmacklem */ 1635191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1636191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1637191783Srmacklem *tl++ = newnfs_true; 1638191783Srmacklem *tl++ = 0; 1639191783Srmacklem } else { 1640191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1641191783Srmacklem *tl++ = newnfs_true; 1642191783Srmacklem } 1643191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1644191783Srmacklem (void) nfsm_strtom(nd, dp->d_name, nlen); 1645191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1646191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1647191783Srmacklem *tl++ = 0; 1648191783Srmacklem } else 1649191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1650191783Srmacklem *tl = txdr_unsigned(*cookiep); 1651191783Srmacklem } 1652191783Srmacklem cpos += dp->d_reclen; 1653191783Srmacklem dp = (struct dirent *)cpos; 1654191783Srmacklem cookiep++; 1655191783Srmacklem ncookies--; 1656191783Srmacklem } 1657191783Srmacklem if (cpos < cend) 1658191783Srmacklem eofflag = 0; 1659191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1660191783Srmacklem *tl++ = newnfs_false; 1661191783Srmacklem if (eofflag) 1662191783Srmacklem *tl = newnfs_true; 1663191783Srmacklem else 1664191783Srmacklem *tl = newnfs_false; 1665191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1666191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1667191783Srmacklem return (0); 1668191783Srmacklemnfsmout: 1669191783Srmacklem vput(vp); 1670191783Srmacklem return (error); 1671191783Srmacklem} 1672191783Srmacklem 1673191783Srmacklem/* 1674191783Srmacklem * Readdirplus for V3 and Readdir for V4. 1675191783Srmacklem */ 1676191783Srmacklemint 1677191783Srmacklemnfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 1678191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1679191783Srmacklem{ 1680191783Srmacklem struct dirent *dp; 1681191783Srmacklem u_int32_t *tl; 1682191783Srmacklem int dirlen; 1683191783Srmacklem char *cpos, *cend, *rbuf; 1684191783Srmacklem struct vnode *nvp; 1685191783Srmacklem fhandle_t nfh; 1686191783Srmacklem struct nfsvattr nva, at, *nvap = &nva; 1687191783Srmacklem struct mbuf *mb0, *mb1; 1688191783Srmacklem struct nfsreferral *refp; 1689199715Srmacklem int nlen, r, error = 0, getret = 1, usevget = 1; 1690191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 1691191783Srmacklem caddr_t bpos0, bpos1; 1692191783Srmacklem u_int64_t off, toff, verf; 1693191783Srmacklem u_long *cookies = NULL, *cookiep; 1694191783Srmacklem nfsattrbit_t attrbits, rderrbits, savbits; 1695191783Srmacklem struct uio io; 1696191783Srmacklem struct iovec iv; 1697199715Srmacklem struct componentname cn; 1698216691Srmacklem int not_zfs; 1699191783Srmacklem 1700191783Srmacklem if (nd->nd_repstat) { 1701191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1702191783Srmacklem return (0); 1703191783Srmacklem } 1704191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 1705191783Srmacklem off = fxdr_hyper(tl); 1706191783Srmacklem toff = off; 1707191783Srmacklem tl += 2; 1708191783Srmacklem verf = fxdr_hyper(tl); 1709191783Srmacklem tl += 2; 1710191783Srmacklem siz = fxdr_unsigned(int, *tl++); 1711191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1712191783Srmacklem 1713191783Srmacklem /* 1714191783Srmacklem * Use the server's maximum data transfer size as the upper bound 1715191783Srmacklem * on reply datalen. 1716191783Srmacklem */ 1717206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1718191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1719191783Srmacklem 1720191783Srmacklem /* 1721191783Srmacklem * siz is a "hint" of how much directory information (name, fileid, 1722191783Srmacklem * cookie) should be in the reply. At least one client "hints" 0, 1723191783Srmacklem * so I set it to cnt for that case. I also round it up to the 1724191783Srmacklem * next multiple of DIRBLKSIZ. 1725191783Srmacklem */ 1726206170Srmacklem if (siz <= 0) 1727191783Srmacklem siz = cnt; 1728191783Srmacklem siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1729191783Srmacklem 1730191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1731191783Srmacklem error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1732191783Srmacklem if (error) 1733191783Srmacklem goto nfsmout; 1734191783Srmacklem NFSSET_ATTRBIT(&savbits, &attrbits); 1735191783Srmacklem NFSCLRNOTFILLABLE_ATTRBIT(&attrbits); 1736191783Srmacklem NFSZERO_ATTRBIT(&rderrbits); 1737191783Srmacklem NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 1738191783Srmacklem } else { 1739191783Srmacklem NFSZERO_ATTRBIT(&attrbits); 1740191783Srmacklem } 1741191783Srmacklem fullsiz = siz; 1742216693Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1743191783Srmacklem if (!nd->nd_repstat) { 1744191783Srmacklem if (off && verf != at.na_filerev) { 1745191783Srmacklem /* 1746191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1747191783Srmacklem * since it is not supposed to change when entries are 1748191783Srmacklem * removed/added unless that offset cookies returned to 1749191783Srmacklem * the client are no longer valid. 1750191783Srmacklem */ 1751191783Srmacklem#if 0 1752191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1753191783Srmacklem nd->nd_repstat = NFSERR_NOTSAME; 1754191783Srmacklem } else { 1755191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1756191783Srmacklem } 1757191783Srmacklem#endif 1758191783Srmacklem } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) { 1759191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1760191783Srmacklem } 1761191783Srmacklem } 1762191783Srmacklem if (!nd->nd_repstat && vp->v_type != VDIR) 1763191783Srmacklem nd->nd_repstat = NFSERR_NOTDIR; 1764191783Srmacklem if (!nd->nd_repstat && cnt == 0) 1765191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1766191783Srmacklem if (!nd->nd_repstat) 1767200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1768191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1769200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1770191783Srmacklem if (nd->nd_repstat) { 1771191783Srmacklem vput(vp); 1772191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1773191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1774191783Srmacklem return (0); 1775191783Srmacklem } 1776216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1777191783Srmacklem 1778191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1779191783Srmacklemagain: 1780191783Srmacklem eofflag = 0; 1781191783Srmacklem if (cookies) { 1782191783Srmacklem free((caddr_t)cookies, M_TEMP); 1783191783Srmacklem cookies = NULL; 1784191783Srmacklem } 1785191783Srmacklem 1786191783Srmacklem iv.iov_base = rbuf; 1787191783Srmacklem iv.iov_len = siz; 1788191783Srmacklem io.uio_iov = &iv; 1789191783Srmacklem io.uio_iovcnt = 1; 1790191783Srmacklem io.uio_offset = (off_t)off; 1791191783Srmacklem io.uio_resid = siz; 1792191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1793191783Srmacklem io.uio_rw = UIO_READ; 1794191783Srmacklem io.uio_td = NULL; 1795191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1796191783Srmacklem &cookies); 1797191783Srmacklem off = (u_int64_t)io.uio_offset; 1798191783Srmacklem if (io.uio_resid) 1799191783Srmacklem siz -= io.uio_resid; 1800191783Srmacklem 1801216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1802191783Srmacklem 1803191783Srmacklem if (!cookies && !nd->nd_repstat) 1804191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1805191783Srmacklem if (!nd->nd_repstat) 1806191783Srmacklem nd->nd_repstat = getret; 1807191783Srmacklem if (nd->nd_repstat) { 1808199715Srmacklem vput(vp); 1809191783Srmacklem if (cookies) 1810191783Srmacklem free((caddr_t)cookies, M_TEMP); 1811191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1812191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1813191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1814191783Srmacklem return (0); 1815191783Srmacklem } 1816191783Srmacklem /* 1817191783Srmacklem * If nothing read, return eof 1818191783Srmacklem * rpc reply 1819191783Srmacklem */ 1820191783Srmacklem if (siz == 0) { 1821199715Srmacklem vput(vp); 1822191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1823191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1824191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1825191783Srmacklem txdr_hyper(at.na_filerev, tl); 1826191783Srmacklem tl += 2; 1827191783Srmacklem *tl++ = newnfs_false; 1828191783Srmacklem *tl = newnfs_true; 1829191783Srmacklem free((caddr_t)cookies, M_TEMP); 1830191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1831191783Srmacklem return (0); 1832191783Srmacklem } 1833191783Srmacklem 1834191783Srmacklem /* 1835191783Srmacklem * Check for degenerate cases of nothing useful read. 1836191783Srmacklem * If so go try again 1837191783Srmacklem */ 1838191783Srmacklem cpos = rbuf; 1839191783Srmacklem cend = rbuf + siz; 1840191783Srmacklem dp = (struct dirent *)cpos; 1841191783Srmacklem cookiep = cookies; 1842191783Srmacklem 1843191783Srmacklem /* 1844191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1845191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1846191783Srmacklem * skip over the records that precede the requested offset. This 1847191783Srmacklem * requires the assumption that file offset cookies monotonically 1848191783Srmacklem * increase. 1849216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1850216691Srmacklem * this is not done when ZFS is the file system. 1851191783Srmacklem */ 1852191783Srmacklem while (cpos < cend && ncookies > 0 && 1853191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1854216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff) || 1855191783Srmacklem ((nd->nd_flag & ND_NFSV4) && 1856191783Srmacklem ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 1857191783Srmacklem (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 1858191783Srmacklem cpos += dp->d_reclen; 1859191783Srmacklem dp = (struct dirent *)cpos; 1860191783Srmacklem cookiep++; 1861191783Srmacklem ncookies--; 1862191783Srmacklem } 1863191783Srmacklem if (cpos >= cend || ncookies == 0) { 1864191783Srmacklem siz = fullsiz; 1865191783Srmacklem toff = off; 1866191783Srmacklem goto again; 1867191783Srmacklem } 1868216692Srmacklem VOP_UNLOCK(vp, 0); 1869191783Srmacklem 1870191783Srmacklem /* 1871191783Srmacklem * Save this position, in case there is an error before one entry 1872191783Srmacklem * is created. 1873191783Srmacklem */ 1874191783Srmacklem mb0 = nd->nd_mb; 1875191783Srmacklem bpos0 = nd->nd_bpos; 1876191783Srmacklem 1877191783Srmacklem /* 1878191783Srmacklem * Fill in the first part of the reply. 1879191783Srmacklem * dirlen is the reply length in bytes and cannot exceed cnt. 1880191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now, 1881191783Srmacklem * so we recognize when we have exceeded cnt.) 1882191783Srmacklem */ 1883191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1884191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1885191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1886191783Srmacklem } else { 1887191783Srmacklem dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 1888191783Srmacklem } 1889191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1890191783Srmacklem txdr_hyper(at.na_filerev, tl); 1891191783Srmacklem 1892191783Srmacklem /* 1893191783Srmacklem * Save this position, in case there is an empty reply needed. 1894191783Srmacklem */ 1895191783Srmacklem mb1 = nd->nd_mb; 1896191783Srmacklem bpos1 = nd->nd_bpos; 1897191783Srmacklem 1898191783Srmacklem /* Loop through the records and build reply */ 1899191783Srmacklem entrycnt = 0; 1900191783Srmacklem while (cpos < cend && ncookies > 0 && dirlen < cnt) { 1901191783Srmacklem nlen = dp->d_namlen; 1902191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1903191783Srmacklem nlen <= NFS_MAXNAMLEN && 1904191783Srmacklem ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 1905191783Srmacklem (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 1906191783Srmacklem || (nlen == 1 && dp->d_name[0] != '.'))) { 1907191783Srmacklem /* 1908191783Srmacklem * Save the current position in the reply, in case 1909191783Srmacklem * this entry exceeds cnt. 1910191783Srmacklem */ 1911191783Srmacklem mb1 = nd->nd_mb; 1912191783Srmacklem bpos1 = nd->nd_bpos; 1913191783Srmacklem 1914191783Srmacklem /* 1915191783Srmacklem * For readdir_and_lookup get the vnode using 1916191783Srmacklem * the file number. 1917191783Srmacklem */ 1918191783Srmacklem nvp = NULL; 1919191783Srmacklem refp = NULL; 1920191783Srmacklem r = 0; 1921191783Srmacklem if ((nd->nd_flag & ND_NFSV3) || 1922191783Srmacklem NFSNONZERO_ATTRBIT(&savbits)) { 1923191783Srmacklem if (nd->nd_flag & ND_NFSV4) 1924191783Srmacklem refp = nfsv4root_getreferral(NULL, 1925191783Srmacklem vp, dp->d_fileno); 1926199715Srmacklem if (refp == NULL) { 1927199715Srmacklem if (usevget) 1928199715Srmacklem r = VFS_VGET(vp->v_mount, 1929216700Srmacklem dp->d_fileno, LK_SHARED, 1930199715Srmacklem &nvp); 1931199715Srmacklem else 1932199715Srmacklem r = EOPNOTSUPP; 1933199715Srmacklem if (r == EOPNOTSUPP) { 1934199715Srmacklem if (usevget) { 1935199715Srmacklem usevget = 0; 1936199715Srmacklem cn.cn_nameiop = LOOKUP; 1937199715Srmacklem cn.cn_lkflags = 1938216700Srmacklem LK_SHARED | 1939199715Srmacklem LK_RETRY; 1940199715Srmacklem cn.cn_cred = 1941199715Srmacklem nd->nd_cred; 1942199715Srmacklem cn.cn_thread = p; 1943199715Srmacklem } 1944199715Srmacklem cn.cn_nameptr = dp->d_name; 1945199715Srmacklem cn.cn_namelen = nlen; 1946199715Srmacklem cn.cn_flags = ISLASTCN | 1947199715Srmacklem NOFOLLOW | LOCKLEAF | 1948199715Srmacklem MPSAFE; 1949199715Srmacklem if (nlen == 2 && 1950199715Srmacklem dp->d_name[0] == '.' && 1951199715Srmacklem dp->d_name[1] == '.') 1952199715Srmacklem cn.cn_flags |= 1953199715Srmacklem ISDOTDOT; 1954216700Srmacklem if (vn_lock(vp, LK_SHARED) 1955216692Srmacklem != 0) { 1956216692Srmacklem nd->nd_repstat = EPERM; 1957216692Srmacklem break; 1958216692Srmacklem } 1959214149Srmacklem if ((vp->v_vflag & VV_ROOT) != 0 1960214149Srmacklem && (cn.cn_flags & ISDOTDOT) 1961214149Srmacklem != 0) { 1962214149Srmacklem vref(vp); 1963214149Srmacklem nvp = vp; 1964214149Srmacklem r = 0; 1965214149Srmacklem } else 1966214149Srmacklem r = VOP_LOOKUP(vp, &nvp, 1967214149Srmacklem &cn); 1968199715Srmacklem } 1969199715Srmacklem } 1970191783Srmacklem if (!r) { 1971191783Srmacklem if (refp == NULL && 1972191783Srmacklem ((nd->nd_flag & ND_NFSV3) || 1973191783Srmacklem NFSNONZERO_ATTRBIT(&attrbits))) { 1974191783Srmacklem r = nfsvno_getfh(nvp, &nfh, p); 1975191783Srmacklem if (!r) 1976191783Srmacklem r = nfsvno_getattr(nvp, nvap, 1977216693Srmacklem nd->nd_cred, p, 1); 1978191783Srmacklem } 1979191783Srmacklem } else { 1980191783Srmacklem nvp = NULL; 1981191783Srmacklem } 1982191783Srmacklem if (r) { 1983191783Srmacklem if (!NFSISSET_ATTRBIT(&attrbits, 1984191783Srmacklem NFSATTRBIT_RDATTRERROR)) { 1985191783Srmacklem if (nvp != NULL) 1986191783Srmacklem vput(nvp); 1987191783Srmacklem nd->nd_repstat = r; 1988191783Srmacklem break; 1989191783Srmacklem } 1990191783Srmacklem } 1991191783Srmacklem } 1992191783Srmacklem 1993191783Srmacklem /* 1994191783Srmacklem * Build the directory record xdr 1995191783Srmacklem */ 1996191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1997191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1998191783Srmacklem *tl++ = newnfs_true; 1999191783Srmacklem *tl++ = 0; 2000191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 2001191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2002191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2003191783Srmacklem *tl++ = 0; 2004191783Srmacklem *tl = txdr_unsigned(*cookiep); 2005191783Srmacklem nfsrv_postopattr(nd, 0, nvap); 2006191783Srmacklem dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1); 2007191783Srmacklem dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 2008191783Srmacklem if (nvp != NULL) 2009191783Srmacklem vput(nvp); 2010191783Srmacklem } else { 2011191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2012191783Srmacklem *tl++ = newnfs_true; 2013191783Srmacklem *tl++ = 0; 2014191783Srmacklem *tl = txdr_unsigned(*cookiep); 2015191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2016191783Srmacklem if (nvp != NULL) 2017216692Srmacklem VOP_UNLOCK(nvp, 0); 2018191783Srmacklem if (refp != NULL) { 2019191783Srmacklem dirlen += nfsrv_putreferralattr(nd, 2020191783Srmacklem &savbits, refp, 0, 2021191783Srmacklem &nd->nd_repstat); 2022191783Srmacklem if (nd->nd_repstat) { 2023191783Srmacklem if (nvp != NULL) 2024191783Srmacklem vrele(nvp); 2025191783Srmacklem break; 2026191783Srmacklem } 2027191783Srmacklem } else if (r) { 2028191783Srmacklem dirlen += nfsvno_fillattr(nd, nvp, nvap, 2029191783Srmacklem &nfh, r, &rderrbits, nd->nd_cred, 2030191783Srmacklem p, isdgram, 0); 2031191783Srmacklem } else { 2032191783Srmacklem dirlen += nfsvno_fillattr(nd, nvp, nvap, 2033191783Srmacklem &nfh, r, &attrbits, nd->nd_cred, 2034191783Srmacklem p, isdgram, 0); 2035191783Srmacklem } 2036191783Srmacklem if (nvp != NULL) 2037191783Srmacklem vrele(nvp); 2038191783Srmacklem dirlen += (3 * NFSX_UNSIGNED); 2039191783Srmacklem } 2040191783Srmacklem if (dirlen <= cnt) 2041191783Srmacklem entrycnt++; 2042191783Srmacklem } 2043191783Srmacklem cpos += dp->d_reclen; 2044191783Srmacklem dp = (struct dirent *)cpos; 2045191783Srmacklem cookiep++; 2046191783Srmacklem ncookies--; 2047191783Srmacklem } 2048216692Srmacklem vrele(vp); 2049191783Srmacklem 2050191783Srmacklem /* 2051191783Srmacklem * If dirlen > cnt, we must strip off the last entry. If that 2052191783Srmacklem * results in an empty reply, report NFSERR_TOOSMALL. 2053191783Srmacklem */ 2054191783Srmacklem if (dirlen > cnt || nd->nd_repstat) { 2055191783Srmacklem if (!nd->nd_repstat && entrycnt == 0) 2056191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 2057191783Srmacklem if (nd->nd_repstat) 2058191783Srmacklem newnfs_trimtrailing(nd, mb0, bpos0); 2059191783Srmacklem else 2060191783Srmacklem newnfs_trimtrailing(nd, mb1, bpos1); 2061191783Srmacklem eofflag = 0; 2062191783Srmacklem } else if (cpos < cend) 2063191783Srmacklem eofflag = 0; 2064191783Srmacklem if (!nd->nd_repstat) { 2065191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2066191783Srmacklem *tl++ = newnfs_false; 2067191783Srmacklem if (eofflag) 2068191783Srmacklem *tl = newnfs_true; 2069191783Srmacklem else 2070191783Srmacklem *tl = newnfs_false; 2071191783Srmacklem } 2072191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 2073191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 2074191783Srmacklem return (0); 2075191783Srmacklemnfsmout: 2076191783Srmacklem vput(vp); 2077191783Srmacklem return (error); 2078191783Srmacklem} 2079191783Srmacklem 2080191783Srmacklem/* 2081191783Srmacklem * Get the settable attributes out of the mbuf list. 2082191783Srmacklem * (Return 0 or EBADRPC) 2083191783Srmacklem */ 2084191783Srmacklemint 2085191783Srmacklemnfsrv_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2086191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2087191783Srmacklem{ 2088191783Srmacklem u_int32_t *tl; 2089191783Srmacklem struct nfsv2_sattr *sp; 2090191783Srmacklem struct timeval curtime; 2091191783Srmacklem int error = 0, toclient = 0; 2092191783Srmacklem 2093191783Srmacklem switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 2094191783Srmacklem case ND_NFSV2: 2095191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2096191783Srmacklem /* 2097191783Srmacklem * Some old clients didn't fill in the high order 16bits. 2098191783Srmacklem * --> check the low order 2 bytes for 0xffff 2099191783Srmacklem */ 2100191783Srmacklem if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 2101191783Srmacklem nvap->na_mode = nfstov_mode(sp->sa_mode); 2102191783Srmacklem if (sp->sa_uid != newnfs_xdrneg1) 2103191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 2104191783Srmacklem if (sp->sa_gid != newnfs_xdrneg1) 2105191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 2106191783Srmacklem if (sp->sa_size != newnfs_xdrneg1) 2107191783Srmacklem nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 2108191783Srmacklem if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 2109191783Srmacklem#ifdef notyet 2110191783Srmacklem fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 2111191783Srmacklem#else 2112191783Srmacklem nvap->na_atime.tv_sec = 2113191783Srmacklem fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 2114191783Srmacklem nvap->na_atime.tv_nsec = 0; 2115191783Srmacklem#endif 2116191783Srmacklem } 2117191783Srmacklem if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 2118191783Srmacklem fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 2119191783Srmacklem break; 2120191783Srmacklem case ND_NFSV3: 2121191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2122191783Srmacklem if (*tl == newnfs_true) { 2123191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2124191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2125191783Srmacklem } 2126191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2127191783Srmacklem if (*tl == newnfs_true) { 2128191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2129191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, *tl); 2130191783Srmacklem } 2131191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2132191783Srmacklem if (*tl == newnfs_true) { 2133191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2134191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, *tl); 2135191783Srmacklem } 2136191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2137191783Srmacklem if (*tl == newnfs_true) { 2138191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2139191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2140191783Srmacklem } 2141191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2142191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2143191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2144191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2145191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_atime); 2146191783Srmacklem toclient = 1; 2147191783Srmacklem break; 2148191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2149191783Srmacklem NFSGETTIME(&curtime); 2150191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2151191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2152191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2153191783Srmacklem break; 2154191783Srmacklem }; 2155191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2156191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2157191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2158191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2159191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_mtime); 2160191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2161191783Srmacklem break; 2162191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2163191783Srmacklem NFSGETTIME(&curtime); 2164191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2165191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2166191783Srmacklem if (!toclient) 2167191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2168191783Srmacklem break; 2169191783Srmacklem }; 2170191783Srmacklem break; 2171191783Srmacklem case ND_NFSV4: 2172191783Srmacklem error = nfsv4_sattr(nd, nvap, attrbitp, aclp, p); 2173191783Srmacklem }; 2174191783Srmacklemnfsmout: 2175191783Srmacklem return (error); 2176191783Srmacklem} 2177191783Srmacklem 2178191783Srmacklem/* 2179191783Srmacklem * Handle the setable attributes for V4. 2180191783Srmacklem * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 2181191783Srmacklem */ 2182191783Srmacklemint 2183191783Srmacklemnfsv4_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2184191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2185191783Srmacklem{ 2186191783Srmacklem u_int32_t *tl; 2187191783Srmacklem int attrsum = 0; 2188191783Srmacklem int i, j; 2189191783Srmacklem int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 2190191783Srmacklem int toclient = 0; 2191191783Srmacklem u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 2192191783Srmacklem uid_t uid; 2193191783Srmacklem gid_t gid; 2194191783Srmacklem struct timeval curtime; 2195191783Srmacklem 2196191783Srmacklem error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 2197191783Srmacklem if (error) 2198191783Srmacklem return (error); 2199191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2200191783Srmacklem attrsize = fxdr_unsigned(int, *tl); 2201191783Srmacklem 2202191783Srmacklem /* 2203191783Srmacklem * Loop around getting the setable attributes. If an unsupported 2204191783Srmacklem * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 2205191783Srmacklem */ 2206191783Srmacklem if (retnotsup) { 2207191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2208191783Srmacklem bitpos = NFSATTRBIT_MAX; 2209191783Srmacklem } else { 2210191783Srmacklem bitpos = 0; 2211191783Srmacklem } 2212191783Srmacklem for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 2213191783Srmacklem if (attrsum > attrsize) { 2214191783Srmacklem error = NFSERR_BADXDR; 2215191783Srmacklem goto nfsmout; 2216191783Srmacklem } 2217191783Srmacklem if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 2218191783Srmacklem switch (bitpos) { 2219191783Srmacklem case NFSATTRBIT_SIZE: 2220191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2221191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2222191783Srmacklem attrsum += NFSX_HYPER; 2223191783Srmacklem break; 2224191783Srmacklem case NFSATTRBIT_ACL: 2225191783Srmacklem error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize, 2226191783Srmacklem p); 2227191783Srmacklem if (error) 2228191783Srmacklem goto nfsmout; 2229191783Srmacklem if (aceerr && !nd->nd_repstat) 2230191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2231191783Srmacklem attrsum += aclsize; 2232191783Srmacklem break; 2233191783Srmacklem case NFSATTRBIT_ARCHIVE: 2234191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2235191783Srmacklem if (!nd->nd_repstat) 2236191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2237191783Srmacklem attrsum += NFSX_UNSIGNED; 2238191783Srmacklem break; 2239191783Srmacklem case NFSATTRBIT_HIDDEN: 2240191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2241191783Srmacklem if (!nd->nd_repstat) 2242191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2243191783Srmacklem attrsum += NFSX_UNSIGNED; 2244191783Srmacklem break; 2245191783Srmacklem case NFSATTRBIT_MIMETYPE: 2246191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2247191783Srmacklem i = fxdr_unsigned(int, *tl); 2248191783Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 2249191783Srmacklem if (error) 2250191783Srmacklem goto nfsmout; 2251191783Srmacklem if (!nd->nd_repstat) 2252191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2253191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 2254191783Srmacklem break; 2255191783Srmacklem case NFSATTRBIT_MODE: 2256191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2257191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2258191783Srmacklem attrsum += NFSX_UNSIGNED; 2259191783Srmacklem break; 2260191783Srmacklem case NFSATTRBIT_OWNER: 2261191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2262191783Srmacklem j = fxdr_unsigned(int, *tl); 2263191783Srmacklem if (j < 0) 2264191783Srmacklem return (NFSERR_BADXDR); 2265191783Srmacklem if (j > NFSV4_SMALLSTR) 2266191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2267191783Srmacklem else 2268191783Srmacklem cp = namestr; 2269191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2270191783Srmacklem if (error) { 2271191783Srmacklem if (j > NFSV4_SMALLSTR) 2272191783Srmacklem free(cp, M_NFSSTRING); 2273191783Srmacklem return (error); 2274191783Srmacklem } 2275191783Srmacklem if (!nd->nd_repstat) { 2276191783Srmacklem nd->nd_repstat = nfsv4_strtouid(cp,j,&uid,p); 2277191783Srmacklem if (!nd->nd_repstat) 2278191783Srmacklem nvap->na_uid = uid; 2279191783Srmacklem } 2280191783Srmacklem if (j > NFSV4_SMALLSTR) 2281191783Srmacklem free(cp, M_NFSSTRING); 2282191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2283191783Srmacklem break; 2284191783Srmacklem case NFSATTRBIT_OWNERGROUP: 2285191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2286191783Srmacklem j = fxdr_unsigned(int, *tl); 2287191783Srmacklem if (j < 0) 2288191783Srmacklem return (NFSERR_BADXDR); 2289191783Srmacklem if (j > NFSV4_SMALLSTR) 2290191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2291191783Srmacklem else 2292191783Srmacklem cp = namestr; 2293191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2294191783Srmacklem if (error) { 2295191783Srmacklem if (j > NFSV4_SMALLSTR) 2296191783Srmacklem free(cp, M_NFSSTRING); 2297191783Srmacklem return (error); 2298191783Srmacklem } 2299191783Srmacklem if (!nd->nd_repstat) { 2300191783Srmacklem nd->nd_repstat = nfsv4_strtogid(cp,j,&gid,p); 2301191783Srmacklem if (!nd->nd_repstat) 2302191783Srmacklem nvap->na_gid = gid; 2303191783Srmacklem } 2304191783Srmacklem if (j > NFSV4_SMALLSTR) 2305191783Srmacklem free(cp, M_NFSSTRING); 2306191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2307191783Srmacklem break; 2308191783Srmacklem case NFSATTRBIT_SYSTEM: 2309191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2310191783Srmacklem if (!nd->nd_repstat) 2311191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2312191783Srmacklem attrsum += NFSX_UNSIGNED; 2313191783Srmacklem break; 2314191783Srmacklem case NFSATTRBIT_TIMEACCESSSET: 2315191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2316191783Srmacklem attrsum += NFSX_UNSIGNED; 2317191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2318191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2319191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_atime); 2320191783Srmacklem toclient = 1; 2321191783Srmacklem attrsum += NFSX_V4TIME; 2322191783Srmacklem } else { 2323191783Srmacklem NFSGETTIME(&curtime); 2324191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2325191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2326191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2327191783Srmacklem } 2328191783Srmacklem break; 2329191783Srmacklem case NFSATTRBIT_TIMEBACKUP: 2330191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2331191783Srmacklem if (!nd->nd_repstat) 2332191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2333191783Srmacklem attrsum += NFSX_V4TIME; 2334191783Srmacklem break; 2335191783Srmacklem case NFSATTRBIT_TIMECREATE: 2336191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2337191783Srmacklem if (!nd->nd_repstat) 2338191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2339191783Srmacklem attrsum += NFSX_V4TIME; 2340191783Srmacklem break; 2341191783Srmacklem case NFSATTRBIT_TIMEMODIFYSET: 2342191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2343191783Srmacklem attrsum += NFSX_UNSIGNED; 2344191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2345191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2346191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_mtime); 2347191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2348191783Srmacklem attrsum += NFSX_V4TIME; 2349191783Srmacklem } else { 2350191783Srmacklem NFSGETTIME(&curtime); 2351191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2352191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2353191783Srmacklem if (!toclient) 2354191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2355191783Srmacklem } 2356191783Srmacklem break; 2357191783Srmacklem default: 2358191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2359191783Srmacklem /* 2360191783Srmacklem * set bitpos so we drop out of the loop. 2361191783Srmacklem */ 2362191783Srmacklem bitpos = NFSATTRBIT_MAX; 2363191783Srmacklem break; 2364191783Srmacklem }; 2365191783Srmacklem } 2366191783Srmacklem 2367191783Srmacklem /* 2368191783Srmacklem * some clients pad the attrlist, so we need to skip over the 2369191783Srmacklem * padding. 2370191783Srmacklem */ 2371191783Srmacklem if (attrsum > attrsize) { 2372191783Srmacklem error = NFSERR_BADXDR; 2373191783Srmacklem } else { 2374191783Srmacklem attrsize = NFSM_RNDUP(attrsize); 2375191783Srmacklem if (attrsum < attrsize) 2376191783Srmacklem error = nfsm_advance(nd, attrsize - attrsum, -1); 2377191783Srmacklem } 2378191783Srmacklemnfsmout: 2379191783Srmacklem return (error); 2380191783Srmacklem} 2381191783Srmacklem 2382191783Srmacklem/* 2383191783Srmacklem * Check/setup export credentials. 2384191783Srmacklem */ 2385191783Srmacklemint 2386191783Srmacklemnfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 2387191783Srmacklem struct ucred *credanon) 2388191783Srmacklem{ 2389191783Srmacklem int error = 0; 2390191783Srmacklem 2391191783Srmacklem /* 2392191783Srmacklem * Check/setup credentials. 2393191783Srmacklem */ 2394191783Srmacklem if (nd->nd_flag & ND_GSS) 2395192121Srmacklem exp->nes_exflag &= ~MNT_EXPORTANON; 2396191783Srmacklem 2397191783Srmacklem /* 2398192121Srmacklem * Check to see if the operation is allowed for this security flavor. 2399191783Srmacklem * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to 2400191783Srmacklem * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 2401192121Srmacklem * Also, allow Secinfo, so that it can acquire the correct flavor(s). 2402191783Srmacklem */ 2403192121Srmacklem if (nfsvno_testexp(nd, exp) && 2404192121Srmacklem nd->nd_procnum != NFSV4OP_SECINFO && 2405191783Srmacklem nd->nd_procnum != NFSPROC_FSINFO) { 2406191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2407191783Srmacklem error = NFSERR_WRONGSEC; 2408191783Srmacklem else 2409191783Srmacklem error = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2410191783Srmacklem return (error); 2411191783Srmacklem } 2412191783Srmacklem 2413191783Srmacklem /* 2414191783Srmacklem * Check to see if the file system is exported V4 only. 2415191783Srmacklem */ 2416191783Srmacklem if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) 2417191783Srmacklem return (NFSERR_PROGNOTV4); 2418191783Srmacklem 2419191783Srmacklem /* 2420191783Srmacklem * Now, map the user credentials. 2421191783Srmacklem * (Note that ND_AUTHNONE will only be set for an NFSv3 2422191783Srmacklem * Fsinfo RPC. If set for anything else, this code might need 2423191783Srmacklem * to change.) 2424191783Srmacklem */ 2425191783Srmacklem if (NFSVNO_EXPORTED(exp) && 2426191783Srmacklem ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) || 2427191783Srmacklem NFSVNO_EXPORTANON(exp) || 2428191783Srmacklem (nd->nd_flag & ND_AUTHNONE))) { 2429191783Srmacklem nd->nd_cred->cr_uid = credanon->cr_uid; 2430191783Srmacklem nd->nd_cred->cr_gid = credanon->cr_gid; 2431194498Sbrooks crsetgroups(nd->nd_cred, credanon->cr_ngroups, 2432194498Sbrooks credanon->cr_groups); 2433191783Srmacklem } 2434191783Srmacklem return (0); 2435191783Srmacklem} 2436191783Srmacklem 2437191783Srmacklem/* 2438191783Srmacklem * Check exports. 2439191783Srmacklem */ 2440191783Srmacklemint 2441191783Srmacklemnfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 2442191783Srmacklem struct ucred **credp) 2443191783Srmacklem{ 2444192121Srmacklem int i, error, *secflavors; 2445191783Srmacklem 2446191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2447192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2448192121Srmacklem if (error) { 2449192121Srmacklem if (nfs_rootfhset) { 2450192121Srmacklem exp->nes_exflag = 0; 2451192121Srmacklem exp->nes_numsecflavor = 0; 2452192121Srmacklem error = 0; 2453192121Srmacklem } 2454192121Srmacklem } else { 2455192121Srmacklem /* Copy the security flavors. */ 2456192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2457192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2458191783Srmacklem } 2459191783Srmacklem return (error); 2460191783Srmacklem} 2461191783Srmacklem 2462191783Srmacklem/* 2463191783Srmacklem * Get a vnode for a file handle and export stuff. 2464191783Srmacklem */ 2465191783Srmacklemint 2466191783Srmacklemnfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 2467216700Srmacklem int lktype, struct vnode **vpp, struct nfsexstuff *exp, 2468216700Srmacklem struct ucred **credp) 2469191783Srmacklem{ 2470192121Srmacklem int i, error, *secflavors; 2471191783Srmacklem 2472191998Srmacklem *credp = NULL; 2473192121Srmacklem exp->nes_numsecflavor = 0; 2474191783Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp); 2475205663Srmacklem if (error != 0) 2476205663Srmacklem /* Make sure the server replies ESTALE to the client. */ 2477205663Srmacklem error = ESTALE; 2478191783Srmacklem if (nam && !error) { 2479191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2480192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2481191783Srmacklem if (error) { 2482191783Srmacklem if (nfs_rootfhset) { 2483191783Srmacklem exp->nes_exflag = 0; 2484192121Srmacklem exp->nes_numsecflavor = 0; 2485191783Srmacklem error = 0; 2486191783Srmacklem } else { 2487191783Srmacklem vput(*vpp); 2488191783Srmacklem } 2489192121Srmacklem } else { 2490192121Srmacklem /* Copy the security flavors. */ 2491192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2492192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2493191783Srmacklem } 2494191783Srmacklem } 2495216700Srmacklem if (error == 0 && lktype == LK_SHARED) 2496216700Srmacklem /* 2497216700Srmacklem * It would be much better to pass lktype to VFS_FHTOVP(), 2498216700Srmacklem * but this will have to do until VFS_FHTOVP() has a lock 2499216700Srmacklem * type argument like VFS_VGET(). 2500216700Srmacklem */ 2501216700Srmacklem vn_lock(*vpp, LK_DOWNGRADE | LK_RETRY); 2502191783Srmacklem return (error); 2503191783Srmacklem} 2504191783Srmacklem 2505191783Srmacklem/* 2506191783Srmacklem * Do the pathconf vnode op. 2507191783Srmacklem */ 2508191783Srmacklemint 2509191783Srmacklemnfsvno_pathconf(struct vnode *vp, int flag, register_t *retf, 2510191783Srmacklem struct ucred *cred, struct thread *p) 2511191783Srmacklem{ 2512191783Srmacklem int error; 2513191783Srmacklem 2514191783Srmacklem error = VOP_PATHCONF(vp, flag, retf); 2515191783Srmacklem return (error); 2516191783Srmacklem} 2517191783Srmacklem 2518191783Srmacklem/* 2519191783Srmacklem * nfsd_fhtovp() - convert a fh to a vnode ptr 2520191783Srmacklem * - look up fsid in mount list (if not found ret error) 2521191783Srmacklem * - get vp and export rights by calling nfsvno_fhtovp() 2522191783Srmacklem * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2523191783Srmacklem * for AUTH_SYS 2524191783Srmacklem * Also handle getting the Giant lock for the file system, 2525191783Srmacklem * as required: 2526191783Srmacklem * - if same mount point as *mpp 2527191783Srmacklem * do nothing 2528191783Srmacklem * else if *mpp == NULL 2529191783Srmacklem * if already locked 2530191783Srmacklem * leave it locked 2531191783Srmacklem * else 2532191783Srmacklem * call VFS_LOCK_GIANT() 2533191783Srmacklem * else 2534191783Srmacklem * if already locked 2535191783Srmacklem * unlock Giant 2536191783Srmacklem * call VFS_LOCK_GIANT() 2537191783Srmacklem */ 2538191783Srmacklemvoid 2539216700Srmacklemnfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype, 2540191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, 2541191783Srmacklem struct mount **mpp, int startwrite, struct thread *p) 2542191783Srmacklem{ 2543191783Srmacklem struct mount *mp; 2544191783Srmacklem struct ucred *credanon; 2545191783Srmacklem fhandle_t *fhp; 2546191783Srmacklem 2547191783Srmacklem fhp = (fhandle_t *)nfp->nfsrvfh_data; 2548191783Srmacklem /* 2549191783Srmacklem * Check for the special case of the nfsv4root_fh. 2550191783Srmacklem */ 2551191783Srmacklem mp = vfs_getvfs(&fhp->fh_fsid); 2552191783Srmacklem if (!mp) { 2553191783Srmacklem *vpp = NULL; 2554191783Srmacklem nd->nd_repstat = ESTALE; 2555191783Srmacklem if (*mpp && exp->nes_vfslocked) 2556191783Srmacklem VFS_UNLOCK_GIANT(*mpp); 2557191783Srmacklem *mpp = NULL; 2558191783Srmacklem exp->nes_vfslocked = 0; 2559191783Srmacklem return; 2560191783Srmacklem } 2561191783Srmacklem 2562191783Srmacklem /* 2563191783Srmacklem * Now, handle Giant for the file system. 2564191783Srmacklem */ 2565191783Srmacklem if (*mpp != NULL && *mpp != mp && exp->nes_vfslocked) { 2566191783Srmacklem VFS_UNLOCK_GIANT(*mpp); 2567191783Srmacklem exp->nes_vfslocked = 0; 2568191783Srmacklem } 2569191783Srmacklem if (!exp->nes_vfslocked && *mpp != mp) 2570191783Srmacklem exp->nes_vfslocked = VFS_LOCK_GIANT(mp); 2571191783Srmacklem 2572191783Srmacklem *mpp = mp; 2573191783Srmacklem if (startwrite) 2574191783Srmacklem vn_start_write(NULL, mpp, V_WAIT); 2575191783Srmacklem 2576216700Srmacklem nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp, 2577191783Srmacklem &credanon); 2578191783Srmacklem 2579191783Srmacklem /* 2580191783Srmacklem * For NFSv4 without a pseudo root fs, unexported file handles 2581191783Srmacklem * can be returned, so that Lookup works everywhere. 2582191783Srmacklem */ 2583191783Srmacklem if (!nd->nd_repstat && exp->nes_exflag == 0 && 2584191783Srmacklem !(nd->nd_flag & ND_NFSV4)) { 2585191783Srmacklem vput(*vpp); 2586191783Srmacklem nd->nd_repstat = EACCES; 2587191783Srmacklem } 2588191783Srmacklem 2589191783Srmacklem /* 2590191783Srmacklem * Personally, I've never seen any point in requiring a 2591191783Srmacklem * reserved port#, since only in the rare case where the 2592191783Srmacklem * clients are all boxes with secure system priviledges, 2593191783Srmacklem * does it provide any enhanced security, but... some people 2594191783Srmacklem * believe it to be useful and keep putting this code back in. 2595191783Srmacklem * (There is also some "security checker" out there that 2596191783Srmacklem * complains if the nfs server doesn't enforce this.) 2597191783Srmacklem * However, note the following: 2598191783Srmacklem * RFC3530 (NFSv4) specifies that a reserved port# not be 2599191783Srmacklem * required. 2600191783Srmacklem * RFC2623 recommends that, if a reserved port# is checked for, 2601191783Srmacklem * that there be a way to turn that off--> ifdef'd. 2602191783Srmacklem */ 2603191783Srmacklem#ifdef NFS_REQRSVPORT 2604191783Srmacklem if (!nd->nd_repstat) { 2605192121Srmacklem struct sockaddr_in *saddr; 2606192121Srmacklem struct sockaddr_in6 *saddr6; 2607192121Srmacklem 2608192121Srmacklem saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 2609192121Srmacklem saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 2610192121Srmacklem if (!(nd->nd_flag & ND_NFSV4) && 2611192121Srmacklem ((saddr->sin_family == AF_INET && 2612192121Srmacklem ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 2613192121Srmacklem (saddr6->sin6_family == AF_INET6 && 2614192121Srmacklem ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 2615192121Srmacklem vput(*vpp); 2616192121Srmacklem nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2617192121Srmacklem } 2618191783Srmacklem } 2619191783Srmacklem#endif /* NFS_REQRSVPORT */ 2620191783Srmacklem 2621191783Srmacklem /* 2622191783Srmacklem * Check/setup credentials. 2623191783Srmacklem */ 2624191783Srmacklem if (!nd->nd_repstat) { 2625191783Srmacklem nd->nd_saveduid = nd->nd_cred->cr_uid; 2626191783Srmacklem nd->nd_repstat = nfsd_excred(nd, exp, credanon); 2627191783Srmacklem if (nd->nd_repstat) 2628191783Srmacklem vput(*vpp); 2629191783Srmacklem } 2630191940Skan if (credanon != NULL) 2631191940Skan crfree(credanon); 2632191783Srmacklem if (nd->nd_repstat) { 2633191783Srmacklem if (startwrite) 2634191783Srmacklem vn_finished_write(mp); 2635191783Srmacklem if (exp->nes_vfslocked) { 2636191783Srmacklem VFS_UNLOCK_GIANT(mp); 2637191783Srmacklem exp->nes_vfslocked = 0; 2638191783Srmacklem } 2639191783Srmacklem vfs_rel(mp); 2640191783Srmacklem *vpp = NULL; 2641191783Srmacklem *mpp = NULL; 2642191783Srmacklem } else { 2643191783Srmacklem vfs_rel(mp); 2644191783Srmacklem } 2645191783Srmacklem} 2646191783Srmacklem 2647191783Srmacklem/* 2648191783Srmacklem * glue for fp. 2649191783Srmacklem */ 2650191783Srmacklemint 2651191783Srmacklemfp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 2652191783Srmacklem{ 2653191783Srmacklem struct filedesc *fdp; 2654191783Srmacklem struct file *fp; 2655191783Srmacklem 2656191783Srmacklem fdp = p->td_proc->p_fd; 2657191783Srmacklem if (fd >= fdp->fd_nfiles || 2658191783Srmacklem (fp = fdp->fd_ofiles[fd]) == NULL) 2659191783Srmacklem return (EBADF); 2660191783Srmacklem *fpp = fp; 2661191783Srmacklem return (0); 2662191783Srmacklem} 2663191783Srmacklem 2664191783Srmacklem/* 2665192121Srmacklem * Called from nfssvc() to update the exports list. Just call 2666191783Srmacklem * vfs_export(). This has to be done, since the v4 root fake fs isn't 2667191783Srmacklem * in the mount list. 2668191783Srmacklem */ 2669191783Srmacklemint 2670191783Srmacklemnfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 2671191783Srmacklem{ 2672191783Srmacklem struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 2673191783Srmacklem int error; 2674191783Srmacklem struct nameidata nd; 2675191783Srmacklem fhandle_t fh; 2676191783Srmacklem 2677191783Srmacklem error = vfs_export(&nfsv4root_mnt, &nfsexargp->export); 2678216894Srmacklem if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0) 2679191783Srmacklem nfs_rootfhset = 0; 2680216894Srmacklem else if (error == 0) { 2681191783Srmacklem if (nfsexargp->fspec == NULL) 2682191783Srmacklem return (EPERM); 2683191783Srmacklem /* 2684191783Srmacklem * If fspec != NULL, this is the v4root path. 2685191783Srmacklem */ 2686191783Srmacklem NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_USERSPACE, 2687191783Srmacklem nfsexargp->fspec, p); 2688191783Srmacklem if ((error = namei(&nd)) != 0) 2689191783Srmacklem return (error); 2690191783Srmacklem error = nfsvno_getfh(nd.ni_vp, &fh, p); 2691191783Srmacklem vrele(nd.ni_vp); 2692191783Srmacklem if (!error) { 2693191783Srmacklem nfs_rootfh.nfsrvfh_len = NFSX_MYFH; 2694191783Srmacklem NFSBCOPY((caddr_t)&fh, 2695191783Srmacklem nfs_rootfh.nfsrvfh_data, 2696191783Srmacklem sizeof (fhandle_t)); 2697191783Srmacklem nfs_rootfhset = 1; 2698191783Srmacklem } 2699191783Srmacklem } 2700191783Srmacklem return (error); 2701191783Srmacklem} 2702191783Srmacklem 2703191783Srmacklem/* 2704191783Srmacklem * Get the tcp socket sequence numbers we need. 2705191783Srmacklem * (Maybe this should be moved to the tcp sources?) 2706191783Srmacklem */ 2707191783Srmacklemint 2708191783Srmacklemnfsrv_getsocksndseq(struct socket *so, tcp_seq *maxp, tcp_seq *unap) 2709191783Srmacklem{ 2710191783Srmacklem struct inpcb *inp; 2711191783Srmacklem struct tcpcb *tp; 2712191783Srmacklem 2713191783Srmacklem inp = sotoinpcb(so); 2714205010Srwatson KASSERT(inp != NULL, ("nfsrv_getsocksndseq: inp == NULL")); 2715205010Srwatson INP_RLOCK(inp); 2716205010Srwatson if (inp->inp_flags & (INP_TIMEWAIT | INP_DROPPED)) { 2717205010Srwatson INP_RUNLOCK(inp); 2718205010Srwatson return (EPIPE); 2719191783Srmacklem } 2720191783Srmacklem tp = intotcpcb(inp); 2721205010Srwatson if (tp->t_state != TCPS_ESTABLISHED) { 2722205010Srwatson INP_RUNLOCK(inp); 2723205010Srwatson return (EPIPE); 2724191783Srmacklem } 2725205010Srwatson *maxp = tp->snd_max; 2726205010Srwatson *unap = tp->snd_una; 2727191783Srmacklem INP_RUNLOCK(inp); 2728205010Srwatson return (0); 2729191783Srmacklem} 2730191783Srmacklem 2731191783Srmacklem/* 2732191783Srmacklem * This function needs to test to see if the system is near its limit 2733191783Srmacklem * for memory allocation via malloc() or mget() and return True iff 2734191783Srmacklem * either of these resources are near their limit. 2735191783Srmacklem * XXX (For now, this is just a stub.) 2736191783Srmacklem */ 2737191783Srmacklemint nfsrv_testmalloclimit = 0; 2738191783Srmacklemint 2739191783Srmacklemnfsrv_mallocmget_limit(void) 2740191783Srmacklem{ 2741191783Srmacklem static int printmesg = 0; 2742191783Srmacklem static int testval = 1; 2743191783Srmacklem 2744191783Srmacklem if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 2745191783Srmacklem if ((printmesg++ % 100) == 0) 2746191783Srmacklem printf("nfsd: malloc/mget near limit\n"); 2747191783Srmacklem return (1); 2748191783Srmacklem } 2749191783Srmacklem return (0); 2750191783Srmacklem} 2751191783Srmacklem 2752191783Srmacklem/* 2753191783Srmacklem * BSD specific initialization of a mount point. 2754191783Srmacklem */ 2755191783Srmacklemvoid 2756191783Srmacklemnfsd_mntinit(void) 2757191783Srmacklem{ 2758191783Srmacklem static int inited = 0; 2759191783Srmacklem 2760191783Srmacklem if (inited) 2761191783Srmacklem return; 2762191783Srmacklem inited = 1; 2763191783Srmacklem nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 2764191783Srmacklem TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist); 2765191783Srmacklem nfsv4root_mnt.mnt_export = NULL; 2766191783Srmacklem TAILQ_INIT(&nfsv4root_opt); 2767191783Srmacklem TAILQ_INIT(&nfsv4root_newopt); 2768191783Srmacklem nfsv4root_mnt.mnt_opt = &nfsv4root_opt; 2769191783Srmacklem nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt; 2770191783Srmacklem nfsv4root_mnt.mnt_nvnodelistsize = 0; 2771191783Srmacklem} 2772191783Srmacklem 2773191783Srmacklem/* 2774191783Srmacklem * Get a vnode for a file handle, without checking exports, etc. 2775191783Srmacklem */ 2776191783Srmacklemstruct vnode * 2777191783Srmacklemnfsvno_getvp(fhandle_t *fhp) 2778191783Srmacklem{ 2779191783Srmacklem struct mount *mp; 2780191783Srmacklem struct vnode *vp; 2781191783Srmacklem int error; 2782191783Srmacklem 2783191783Srmacklem mp = vfs_getvfs(&fhp->fh_fsid); 2784191783Srmacklem if (mp == NULL) 2785191783Srmacklem return (NULL); 2786191783Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, &vp); 2787191783Srmacklem if (error) 2788191783Srmacklem return (NULL); 2789191783Srmacklem return (vp); 2790191783Srmacklem} 2791191783Srmacklem 2792191783Srmacklem/* 2793191783Srmacklem * Do a local VOP_ADVLOCK(). 2794191783Srmacklem */ 2795191783Srmacklemint 2796191783Srmacklemnfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 2797192256Srmacklem u_int64_t end, struct thread *td) 2798191783Srmacklem{ 2799191783Srmacklem int error; 2800191783Srmacklem struct flock fl; 2801191783Srmacklem u_int64_t tlen; 2802191783Srmacklem 2803212833Srmacklem if (nfsrv_dolocallocks == 0) 2804191783Srmacklem return (0); 2805216893Srmacklem 2806216893Srmacklem /* Check for VI_DOOMED here, so that VOP_ADVLOCK() isn't performed. */ 2807216893Srmacklem if ((vp->v_iflag & VI_DOOMED) != 0) 2808216893Srmacklem return (EPERM); 2809216893Srmacklem 2810191783Srmacklem fl.l_whence = SEEK_SET; 2811191783Srmacklem fl.l_type = ftype; 2812191783Srmacklem fl.l_start = (off_t)first; 2813191783Srmacklem if (end == NFS64BITSSET) { 2814191783Srmacklem fl.l_len = 0; 2815191783Srmacklem } else { 2816191783Srmacklem tlen = end - first; 2817191783Srmacklem fl.l_len = (off_t)tlen; 2818191783Srmacklem } 2819191783Srmacklem /* 2820192256Srmacklem * For FreeBSD8, the l_pid and l_sysid must be set to the same 2821192256Srmacklem * values for all calls, so that all locks will be held by the 2822192256Srmacklem * nfsd server. (The nfsd server handles conflicts between the 2823192256Srmacklem * various clients.) 2824192256Srmacklem * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 2825192256Srmacklem * bytes, so it can't be put in l_sysid. 2826191783Srmacklem */ 2827192503Srmacklem if (nfsv4_sysid == 0) 2828192503Srmacklem nfsv4_sysid = nlm_acquire_next_sysid(); 2829192256Srmacklem fl.l_pid = (pid_t)0; 2830192503Srmacklem fl.l_sysid = (int)nfsv4_sysid; 2831192256Srmacklem 2832192256Srmacklem NFSVOPUNLOCK(vp, 0, td); 2833212833Srmacklem if (ftype == F_UNLCK) 2834212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, 2835212833Srmacklem (F_POSIX | F_REMOTE)); 2836212833Srmacklem else 2837212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 2838212833Srmacklem (F_POSIX | F_REMOTE)); 2839192256Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, td); 2840191783Srmacklem return (error); 2841191783Srmacklem} 2842191783Srmacklem 2843191783Srmacklem/* 2844191783Srmacklem * Unlock an underlying local file system. 2845191783Srmacklem */ 2846191783Srmacklemvoid 2847191783Srmacklemnfsvno_unlockvfs(struct mount *mp) 2848191783Srmacklem{ 2849191783Srmacklem 2850191783Srmacklem VFS_UNLOCK_GIANT(mp); 2851191783Srmacklem} 2852191783Srmacklem 2853191783Srmacklem/* 2854191783Srmacklem * Lock an underlying file system, as required, and return 2855191783Srmacklem * whether or not it is locked. 2856191783Srmacklem */ 2857191783Srmacklemint 2858191783Srmacklemnfsvno_lockvfs(struct mount *mp) 2859191783Srmacklem{ 2860191783Srmacklem int ret; 2861191783Srmacklem 2862191783Srmacklem ret = VFS_LOCK_GIANT(mp); 2863191783Srmacklem return (ret); 2864191783Srmacklem} 2865191783Srmacklem 2866191783Srmacklem/* 2867191783Srmacklem * Check the nfsv4 root exports. 2868191783Srmacklem */ 2869191783Srmacklemint 2870191783Srmacklemnfsvno_v4rootexport(struct nfsrv_descript *nd) 2871191783Srmacklem{ 2872191783Srmacklem struct ucred *credanon; 2873192121Srmacklem int exflags, error, numsecflavor, *secflavors, i; 2874191783Srmacklem 2875191783Srmacklem error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags, 2876192121Srmacklem &credanon, &numsecflavor, &secflavors); 2877191783Srmacklem if (error) 2878191783Srmacklem return (NFSERR_PROGUNAVAIL); 2879191940Skan if (credanon != NULL) 2880191940Skan crfree(credanon); 2881192121Srmacklem for (i = 0; i < numsecflavor; i++) { 2882192121Srmacklem if (secflavors[i] == AUTH_SYS) 2883192121Srmacklem nd->nd_flag |= ND_EXAUTHSYS; 2884192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5) 2885192121Srmacklem nd->nd_flag |= ND_EXGSS; 2886192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5I) 2887192121Srmacklem nd->nd_flag |= ND_EXGSSINTEGRITY; 2888192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5P) 2889192121Srmacklem nd->nd_flag |= ND_EXGSSPRIVACY; 2890192121Srmacklem } 2891191783Srmacklem return (0); 2892191783Srmacklem} 2893191783Srmacklem 2894191783Srmacklem/* 2895191783Srmacklem * Nfs server psuedo system call for the nfsd's 2896191783Srmacklem */ 2897191783Srmacklem/* 2898191783Srmacklem * MPSAFE 2899191783Srmacklem */ 2900191783Srmacklemstatic int 2901191783Srmacklemnfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 2902191783Srmacklem{ 2903191783Srmacklem struct file *fp; 2904192017Srmacklem struct nfsd_addsock_args sockarg; 2905192017Srmacklem struct nfsd_nfsd_args nfsdarg; 2906191783Srmacklem int error; 2907191783Srmacklem 2908191783Srmacklem if (uap->flag & NFSSVC_NFSDADDSOCK) { 2909192017Srmacklem error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 2910191783Srmacklem if (error) 2911191783Srmacklem return (error); 2912192017Srmacklem if ((error = fget(td, sockarg.sock, &fp)) != 0) { 2913191783Srmacklem return (error); 2914191783Srmacklem } 2915191783Srmacklem if (fp->f_type != DTYPE_SOCKET) { 2916191783Srmacklem fdrop(fp, td); 2917191783Srmacklem return (EPERM); 2918191783Srmacklem } 2919191783Srmacklem error = nfsrvd_addsock(fp); 2920191783Srmacklem fdrop(fp, td); 2921191783Srmacklem } else if (uap->flag & NFSSVC_NFSDNFSD) { 2922192017Srmacklem if (uap->argp == NULL) 2923192017Srmacklem return (EINVAL); 2924192017Srmacklem error = copyin(uap->argp, (caddr_t)&nfsdarg, 2925192017Srmacklem sizeof (nfsdarg)); 2926192017Srmacklem if (error) 2927192017Srmacklem return (error); 2928192017Srmacklem error = nfsrvd_nfsd(td, &nfsdarg); 2929191783Srmacklem } else { 2930191783Srmacklem error = nfssvc_srvcall(td, uap, td->td_ucred); 2931191783Srmacklem } 2932191783Srmacklem return (error); 2933191783Srmacklem} 2934191783Srmacklem 2935191783Srmacklemstatic int 2936191783Srmacklemnfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 2937191783Srmacklem{ 2938191783Srmacklem struct nfsex_args export; 2939191783Srmacklem struct file *fp = NULL; 2940191783Srmacklem int stablefd, len; 2941191783Srmacklem struct nfsd_clid adminrevoke; 2942191783Srmacklem struct nfsd_dumplist dumplist; 2943191783Srmacklem struct nfsd_dumpclients *dumpclients; 2944191783Srmacklem struct nfsd_dumplocklist dumplocklist; 2945191783Srmacklem struct nfsd_dumplocks *dumplocks; 2946191783Srmacklem struct nameidata nd; 2947191783Srmacklem vnode_t vp; 2948191783Srmacklem int error = EINVAL; 2949191783Srmacklem 2950191783Srmacklem if (uap->flag & NFSSVC_PUBLICFH) { 2951191783Srmacklem NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 2952191783Srmacklem sizeof (fhandle_t)); 2953191783Srmacklem error = copyin(uap->argp, 2954191783Srmacklem &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 2955191783Srmacklem if (!error) 2956191783Srmacklem nfs_pubfhset = 1; 2957191783Srmacklem } else if (uap->flag & NFSSVC_V4ROOTEXPORT) { 2958191783Srmacklem error = copyin(uap->argp,(caddr_t)&export, 2959191783Srmacklem sizeof (struct nfsex_args)); 2960191783Srmacklem if (!error) 2961191783Srmacklem error = nfsrv_v4rootexport(&export, cred, p); 2962191783Srmacklem } else if (uap->flag & NFSSVC_NOPUBLICFH) { 2963191783Srmacklem nfs_pubfhset = 0; 2964191783Srmacklem error = 0; 2965191783Srmacklem } else if (uap->flag & NFSSVC_STABLERESTART) { 2966191783Srmacklem error = copyin(uap->argp, (caddr_t)&stablefd, 2967191783Srmacklem sizeof (int)); 2968191783Srmacklem if (!error) 2969191783Srmacklem error = fp_getfvp(p, stablefd, &fp, &vp); 2970191783Srmacklem if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 2971191783Srmacklem error = EBADF; 2972191783Srmacklem if (!error && newnfs_numnfsd != 0) 2973191783Srmacklem error = EPERM; 2974191783Srmacklem if (!error) { 2975191783Srmacklem nfsrv_stablefirst.nsf_fp = fp; 2976191783Srmacklem nfsrv_setupstable(p); 2977191783Srmacklem } 2978191783Srmacklem } else if (uap->flag & NFSSVC_ADMINREVOKE) { 2979191783Srmacklem error = copyin(uap->argp, (caddr_t)&adminrevoke, 2980191783Srmacklem sizeof (struct nfsd_clid)); 2981191783Srmacklem if (!error) 2982191783Srmacklem error = nfsrv_adminrevoke(&adminrevoke, p); 2983191783Srmacklem } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 2984191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplist, 2985191783Srmacklem sizeof (struct nfsd_dumplist)); 2986191783Srmacklem if (!error && (dumplist.ndl_size < 1 || 2987191783Srmacklem dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 2988191783Srmacklem error = EPERM; 2989191783Srmacklem if (!error) { 2990191783Srmacklem len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 2991191783Srmacklem dumpclients = (struct nfsd_dumpclients *)malloc(len, 2992191783Srmacklem M_TEMP, M_WAITOK); 2993191783Srmacklem nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 2994191783Srmacklem error = copyout(dumpclients, 2995191783Srmacklem CAST_USER_ADDR_T(dumplist.ndl_list), len); 2996191783Srmacklem free((caddr_t)dumpclients, M_TEMP); 2997191783Srmacklem } 2998191783Srmacklem } else if (uap->flag & NFSSVC_DUMPLOCKS) { 2999191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplocklist, 3000191783Srmacklem sizeof (struct nfsd_dumplocklist)); 3001191783Srmacklem if (!error && (dumplocklist.ndllck_size < 1 || 3002191783Srmacklem dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 3003191783Srmacklem error = EPERM; 3004191783Srmacklem if (!error) 3005191783Srmacklem error = nfsrv_lookupfilename(&nd, 3006191783Srmacklem dumplocklist.ndllck_fname, p); 3007191783Srmacklem if (!error) { 3008191783Srmacklem len = sizeof (struct nfsd_dumplocks) * 3009191783Srmacklem dumplocklist.ndllck_size; 3010191783Srmacklem dumplocks = (struct nfsd_dumplocks *)malloc(len, 3011191783Srmacklem M_TEMP, M_WAITOK); 3012191783Srmacklem nfsrv_dumplocks(nd.ni_vp, dumplocks, 3013191783Srmacklem dumplocklist.ndllck_size, p); 3014191783Srmacklem vput(nd.ni_vp); 3015191783Srmacklem error = copyout(dumplocks, 3016191783Srmacklem CAST_USER_ADDR_T(dumplocklist.ndllck_list), len); 3017191783Srmacklem free((caddr_t)dumplocks, M_TEMP); 3018191783Srmacklem } 3019191783Srmacklem } 3020191783Srmacklem return (error); 3021191783Srmacklem} 3022191783Srmacklem 3023192121Srmacklem/* 3024192121Srmacklem * Check exports. 3025192121Srmacklem * Returns 0 if ok, 1 otherwise. 3026192121Srmacklem */ 3027192121Srmacklemint 3028192121Srmacklemnfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 3029192121Srmacklem{ 3030192121Srmacklem int i; 3031192121Srmacklem 3032192121Srmacklem /* 3033192121Srmacklem * This seems odd, but allow the case where the security flavor 3034192121Srmacklem * list is empty. This happens when NFSv4 is traversing non-exported 3035192121Srmacklem * file systems. Exported file systems should always have a non-empty 3036192121Srmacklem * security flavor list. 3037192121Srmacklem */ 3038192121Srmacklem if (exp->nes_numsecflavor == 0) 3039192121Srmacklem return (0); 3040192121Srmacklem 3041192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) { 3042192121Srmacklem /* 3043192121Srmacklem * The tests for privacy and integrity must be first, 3044192121Srmacklem * since ND_GSS is set for everything but AUTH_SYS. 3045192121Srmacklem */ 3046192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 3047192121Srmacklem (nd->nd_flag & ND_GSSPRIVACY)) 3048192121Srmacklem return (0); 3049192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 3050192121Srmacklem (nd->nd_flag & ND_GSSINTEGRITY)) 3051192121Srmacklem return (0); 3052192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 3053192121Srmacklem (nd->nd_flag & ND_GSS)) 3054192121Srmacklem return (0); 3055192121Srmacklem if (exp->nes_secflavors[i] == AUTH_SYS && 3056192121Srmacklem (nd->nd_flag & ND_GSS) == 0) 3057192121Srmacklem return (0); 3058192121Srmacklem } 3059192121Srmacklem return (1); 3060192121Srmacklem} 3061192121Srmacklem 3062214224Srmacklem/* 3063214224Srmacklem * Calculate a hash value for the fid in a file handle. 3064214224Srmacklem */ 3065214255Srmacklemuint32_t 3066214224Srmacklemnfsrv_hashfh(fhandle_t *fhp) 3067214224Srmacklem{ 3068214255Srmacklem uint32_t hashval; 3069214224Srmacklem 3070214255Srmacklem hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0); 3071214224Srmacklem return (hashval); 3072214224Srmacklem} 3073214224Srmacklem 3074191783Srmacklemextern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 3075191783Srmacklem 3076191783Srmacklem/* 3077191783Srmacklem * Called once to initialize data structures... 3078191783Srmacklem */ 3079191783Srmacklemstatic int 3080191783Srmacklemnfsd_modevent(module_t mod, int type, void *data) 3081191783Srmacklem{ 3082191783Srmacklem int error = 0; 3083191783Srmacklem static int loaded = 0; 3084191783Srmacklem 3085191783Srmacklem switch (type) { 3086191783Srmacklem case MOD_LOAD: 3087191783Srmacklem if (loaded) 3088191783Srmacklem return (0); 3089191783Srmacklem newnfs_portinit(); 3090191783Srmacklem mtx_init(&nfs_cache_mutex, "nfs_cache_mutex", NULL, MTX_DEF); 3091191783Srmacklem mtx_init(&nfs_v4root_mutex, "nfs_v4root_mutex", NULL, MTX_DEF); 3092191783Srmacklem mtx_init(&nfsv4root_mnt.mnt_mtx, "struct mount mtx", NULL, 3093191783Srmacklem MTX_DEF); 3094191783Srmacklem lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0); 3095191783Srmacklem nfsrvd_initcache(); 3096191783Srmacklem nfsd_init(); 3097191783Srmacklem NFSD_LOCK(); 3098191783Srmacklem nfsrvd_init(0); 3099191783Srmacklem NFSD_UNLOCK(); 3100191783Srmacklem nfsd_mntinit(); 3101191783Srmacklem#ifdef VV_DISABLEDELEG 3102191783Srmacklem vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 3103191783Srmacklem vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 3104191783Srmacklem#endif 3105191783Srmacklem nfsd_call_servertimer = nfsrv_servertimer; 3106191783Srmacklem nfsd_call_nfsd = nfssvc_nfsd; 3107191783Srmacklem loaded = 1; 3108191783Srmacklem break; 3109191783Srmacklem 3110191783Srmacklem case MOD_UNLOAD: 3111191783Srmacklem if (newnfs_numnfsd != 0) { 3112191783Srmacklem error = EBUSY; 3113191783Srmacklem break; 3114191783Srmacklem } 3115191783Srmacklem 3116191783Srmacklem#ifdef VV_DISABLEDELEG 3117191783Srmacklem vn_deleg_ops.vndeleg_recall = NULL; 3118191783Srmacklem vn_deleg_ops.vndeleg_disable = NULL; 3119191783Srmacklem#endif 3120191783Srmacklem nfsd_call_servertimer = NULL; 3121191783Srmacklem nfsd_call_nfsd = NULL; 3122191783Srmacklem /* and get rid of the locks */ 3123191783Srmacklem mtx_destroy(&nfs_cache_mutex); 3124191783Srmacklem mtx_destroy(&nfs_v4root_mutex); 3125191783Srmacklem mtx_destroy(&nfsv4root_mnt.mnt_mtx); 3126191783Srmacklem lockdestroy(&nfsv4root_mnt.mnt_explock); 3127191783Srmacklem loaded = 0; 3128191783Srmacklem break; 3129191783Srmacklem default: 3130191783Srmacklem error = EOPNOTSUPP; 3131191783Srmacklem break; 3132191783Srmacklem } 3133191783Srmacklem return error; 3134191783Srmacklem} 3135191783Srmacklemstatic moduledata_t nfsd_mod = { 3136191783Srmacklem "nfsd", 3137191783Srmacklem nfsd_modevent, 3138191783Srmacklem NULL, 3139191783Srmacklem}; 3140191783SrmacklemDECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 3141191783Srmacklem 3142191783Srmacklem/* So that loader and kldload(2) can find us, wherever we are.. */ 3143191783SrmacklemMODULE_VERSION(nfsd, 1); 3144191783SrmacklemMODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 3145192574SrmacklemMODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 3146209191SrmacklemMODULE_DEPEND(nfsd, krpc, 1, 1, 1); 3147209191SrmacklemMODULE_DEPEND(nfsd, nfssvc, 1, 1, 1); 3148191783Srmacklem 3149