nfs_nfsdport.c revision 216700
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 216700 2010-12-25 21:56:25Z 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 nfsv4root_set; 51191783Srmacklemextern int nfsrv_useacl; 52191783Srmacklemextern int newnfs_numnfsd; 53191783Srmacklemextern struct mount nfsv4root_mnt; 54191783Srmacklemextern struct nfsrv_stablefirst nfsrv_stablefirst; 55191783Srmacklemextern void (*nfsd_call_servertimer)(void); 56191783Srmacklemstruct vfsoptlist nfsv4root_opt, nfsv4root_newopt; 57191783SrmacklemNFSDLOCKMUTEX; 58191783Srmacklemstruct mtx nfs_cache_mutex; 59191783Srmacklemstruct mtx nfs_v4root_mutex; 60191783Srmacklemstruct nfsrvfh nfs_rootfh, nfs_pubfh; 61191783Srmacklemint nfs_pubfhset = 0, nfs_rootfhset = 0; 62192503Srmacklemstatic uint32_t nfsv4_sysid = 0; 63191783Srmacklem 64192255Srmacklemstatic int nfssvc_srvcall(struct thread *, struct nfssvc_args *, 65192255Srmacklem struct ucred *); 66191783Srmacklem 67191783Srmacklemstatic int enable_crossmntpt = 1; 68191783Srmacklemstatic int nfs_commit_blks; 69191783Srmacklemstatic int nfs_commit_miss; 70191783Srmacklemextern int nfsrv_issuedelegs; 71192255Srmacklemextern int nfsrv_dolocallocks; 72192255Srmacklem 73191783SrmacklemSYSCTL_DECL(_vfs_newnfs); 74192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, mirrormnt, CTLFLAG_RW, &enable_crossmntpt, 75192255Srmacklem 0, "Enable nfsd to cross mount points"); 76192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 77192255Srmacklem 0, ""); 78192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 79192255Srmacklem 0, ""); 80192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, issue_delegations, CTLFLAG_RW, 81192255Srmacklem &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); 82192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, enable_locallocks, CTLFLAG_RW, 83192255Srmacklem &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files"); 84191783Srmacklem 85191783Srmacklem#define NUM_HEURISTIC 1017 86191783Srmacklem#define NHUSE_INIT 64 87191783Srmacklem#define NHUSE_INC 16 88191783Srmacklem#define NHUSE_MAX 2048 89191783Srmacklem 90191783Srmacklemstatic struct nfsheur { 91191783Srmacklem struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 92191783Srmacklem off_t nh_nextr; /* next offset for sequential detection */ 93191783Srmacklem int nh_use; /* use count for selection */ 94191783Srmacklem int nh_seqcount; /* heuristic */ 95191783Srmacklem} nfsheur[NUM_HEURISTIC]; 96191783Srmacklem 97191783Srmacklem 98191783Srmacklem/* 99191783Srmacklem * Get attributes into nfsvattr structure. 100191783Srmacklem */ 101191783Srmacklemint 102191783Srmacklemnfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 103216693Srmacklem struct thread *p, int vpislocked) 104191783Srmacklem{ 105191783Srmacklem int error, lockedit = 0; 106191783Srmacklem 107216693Srmacklem if (vpislocked == 0) { 108216693Srmacklem /* 109216693Srmacklem * When vpislocked == 0, the vnode is either exclusively 110216693Srmacklem * locked by this thread or not locked by this thread. 111216693Srmacklem * As such, shared lock it, if not exclusively locked. 112216693Srmacklem */ 113216693Srmacklem if (VOP_ISLOCKED(vp) != LK_EXCLUSIVE) { 114216693Srmacklem lockedit = 1; 115216693Srmacklem vn_lock(vp, LK_SHARED | LK_RETRY); 116216693Srmacklem } 117191783Srmacklem } 118191783Srmacklem error = VOP_GETATTR(vp, &nvap->na_vattr, cred); 119216693Srmacklem if (lockedit != 0) 120216693Srmacklem VOP_UNLOCK(vp, 0); 121191783Srmacklem return (error); 122191783Srmacklem} 123191783Srmacklem 124191783Srmacklem/* 125191783Srmacklem * Get a file handle for a vnode. 126191783Srmacklem */ 127191783Srmacklemint 128191783Srmacklemnfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 129191783Srmacklem{ 130191783Srmacklem int error; 131191783Srmacklem 132191783Srmacklem NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 133191783Srmacklem fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 134191783Srmacklem error = VOP_VPTOFH(vp, &fhp->fh_fid); 135191783Srmacklem return (error); 136191783Srmacklem} 137191783Srmacklem 138191783Srmacklem/* 139191783Srmacklem * Perform access checking for vnodes obtained from file handles that would 140191783Srmacklem * refer to files already opened by a Unix client. You cannot just use 141200999Srmacklem * vn_writechk() and VOP_ACCESSX() for two reasons. 142200999Srmacklem * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write 143200999Srmacklem * case. 144191783Srmacklem * 2 - The owner is to be given access irrespective of mode bits for some 145191783Srmacklem * operations, so that processes that chmod after opening a file don't 146191783Srmacklem * break. 147191783Srmacklem */ 148191783Srmacklemint 149200999Srmacklemnfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred, 150200999Srmacklem struct nfsexstuff *exp, struct thread *p, int override, int vpislocked, 151200999Srmacklem u_int32_t *supportedtypep) 152191783Srmacklem{ 153191783Srmacklem struct vattr vattr; 154191783Srmacklem int error = 0, getret = 0; 155191783Srmacklem 156191783Srmacklem if (accmode & VWRITE) { 157191783Srmacklem /* Just vn_writechk() changed to check rdonly */ 158191783Srmacklem /* 159191783Srmacklem * Disallow write attempts on read-only file systems; 160191783Srmacklem * unless the file is a socket or a block or character 161191783Srmacklem * device resident on the file system. 162191783Srmacklem */ 163191783Srmacklem if (NFSVNO_EXRDONLY(exp) || 164200999Srmacklem (vp->v_mount->mnt_flag & MNT_RDONLY)) { 165191783Srmacklem switch (vp->v_type) { 166191783Srmacklem case VREG: 167191783Srmacklem case VDIR: 168191783Srmacklem case VLNK: 169191783Srmacklem return (EROFS); 170191783Srmacklem default: 171191783Srmacklem break; 172191783Srmacklem } 173191783Srmacklem } 174191783Srmacklem /* 175191783Srmacklem * If there's shared text associated with 176191783Srmacklem * the inode, try to free it up once. If 177191783Srmacklem * we fail, we can't allow writing. 178191783Srmacklem */ 179191783Srmacklem if (vp->v_vflag & VV_TEXT) 180191783Srmacklem return (ETXTBSY); 181191783Srmacklem } 182191783Srmacklem if (vpislocked == 0) 183216700Srmacklem vn_lock(vp, LK_SHARED | LK_RETRY); 184191783Srmacklem 185191783Srmacklem /* 186191783Srmacklem * Should the override still be applied when ACLs are enabled? 187191783Srmacklem */ 188200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 189200999Srmacklem if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) { 190200999Srmacklem /* 191200999Srmacklem * Try again with VEXPLICIT_DENY, to see if the test for 192200999Srmacklem * deletion is supported. 193200999Srmacklem */ 194200999Srmacklem error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p); 195200999Srmacklem if (error == 0) { 196200999Srmacklem if (vp->v_type == VDIR) { 197200999Srmacklem accmode &= ~(VDELETE | VDELETE_CHILD); 198200999Srmacklem accmode |= VWRITE; 199200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 200200999Srmacklem } else if (supportedtypep != NULL) { 201200999Srmacklem *supportedtypep &= ~NFSACCESS_DELETE; 202200999Srmacklem } 203200999Srmacklem } 204200999Srmacklem } 205191783Srmacklem 206191783Srmacklem /* 207191783Srmacklem * Allow certain operations for the owner (reads and writes 208191783Srmacklem * on files that are already open). 209191783Srmacklem */ 210191783Srmacklem if (override != NFSACCCHK_NOOVERRIDE && 211191783Srmacklem (error == EPERM || error == EACCES)) { 212191783Srmacklem if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 213191783Srmacklem error = 0; 214191783Srmacklem else if (override & NFSACCCHK_ALLOWOWNER) { 215191783Srmacklem getret = VOP_GETATTR(vp, &vattr, cred); 216191783Srmacklem if (getret == 0 && cred->cr_uid == vattr.va_uid) 217191783Srmacklem error = 0; 218191783Srmacklem } 219191783Srmacklem } 220191783Srmacklem if (vpislocked == 0) 221216700Srmacklem VOP_UNLOCK(vp, 0); 222191783Srmacklem return (error); 223191783Srmacklem} 224191783Srmacklem 225191783Srmacklem/* 226191783Srmacklem * Set attribute(s) vnop. 227191783Srmacklem */ 228191783Srmacklemint 229191783Srmacklemnfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 230191783Srmacklem struct thread *p, struct nfsexstuff *exp) 231191783Srmacklem{ 232191783Srmacklem int error; 233191783Srmacklem 234191783Srmacklem error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 235191783Srmacklem return (error); 236191783Srmacklem} 237191783Srmacklem 238191783Srmacklem/* 239191783Srmacklem * Set up nameidata for a lookup() call and do it 240191783Srmacklem * For the cases where we are crossing mount points 241191783Srmacklem * (looking up the public fh path or the v4 root path when 242191783Srmacklem * not using a pseudo-root fs), set/release the Giant lock, 243191783Srmacklem * as required. 244191783Srmacklem */ 245191783Srmacklemint 246191783Srmacklemnfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 247191783Srmacklem struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p, 248191783Srmacklem struct vnode **retdirp) 249191783Srmacklem{ 250191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 251191783Srmacklem int i; 252191783Srmacklem struct iovec aiov; 253191783Srmacklem struct uio auio; 254191783Srmacklem int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 255191783Srmacklem int error = 0, crossmnt; 256191783Srmacklem char *cp; 257191783Srmacklem 258191783Srmacklem *retdirp = NULL; 259191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 260191783Srmacklem /* 261191783Srmacklem * Extract and set starting directory. 262191783Srmacklem */ 263191783Srmacklem if (dp->v_type != VDIR) { 264191783Srmacklem if (islocked) 265191783Srmacklem vput(dp); 266191783Srmacklem else 267191783Srmacklem vrele(dp); 268191783Srmacklem nfsvno_relpathbuf(ndp); 269191783Srmacklem return (ENOTDIR); 270191783Srmacklem } 271191783Srmacklem if (islocked) 272191783Srmacklem NFSVOPUNLOCK(dp, 0, p); 273191783Srmacklem VREF(dp); 274191783Srmacklem *retdirp = dp; 275191783Srmacklem if (NFSVNO_EXRDONLY(exp)) 276191783Srmacklem cnp->cn_flags |= RDONLY; 277191783Srmacklem ndp->ni_segflg = UIO_SYSSPACE; 278191783Srmacklem crossmnt = 1; 279191783Srmacklem 280191783Srmacklem if (nd->nd_flag & ND_PUBLOOKUP) { 281191783Srmacklem ndp->ni_loopcnt = 0; 282191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 283191783Srmacklem vrele(dp); 284191783Srmacklem /* 285191783Srmacklem * Check for degenerate pathnames here, since lookup() 286191783Srmacklem * panics on them. 287191783Srmacklem */ 288191783Srmacklem for (i = 1; i < ndp->ni_pathlen; i++) 289191783Srmacklem if (cnp->cn_pnbuf[i] != '/') 290191783Srmacklem break; 291191783Srmacklem if (i == ndp->ni_pathlen) { 292191783Srmacklem error = NFSERR_ACCES; 293191783Srmacklem goto out; 294191783Srmacklem } 295191783Srmacklem dp = rootvnode; 296191783Srmacklem VREF(dp); 297191783Srmacklem } 298191783Srmacklem } else if ((enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 299191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) { 300191783Srmacklem /* 301191783Srmacklem * Only cross mount points for NFSv4 when doing a 302191783Srmacklem * mount while traversing the file system above 303191783Srmacklem * the mount point, unless enable_crossmntpt is set. 304191783Srmacklem */ 305191783Srmacklem cnp->cn_flags |= NOCROSSMOUNT; 306191783Srmacklem crossmnt = 0; 307191783Srmacklem } 308191783Srmacklem 309191783Srmacklem /* 310191783Srmacklem * Initialize for scan, set ni_startdir and bump ref on dp again 311191783Srmacklem * becuase lookup() will dereference ni_startdir. 312191783Srmacklem */ 313191783Srmacklem 314191783Srmacklem cnp->cn_thread = p; 315191783Srmacklem ndp->ni_startdir = dp; 316191783Srmacklem ndp->ni_rootdir = rootvnode; 317191783Srmacklem 318191783Srmacklem if (!lockleaf) 319191783Srmacklem cnp->cn_flags |= LOCKLEAF; 320191783Srmacklem for (;;) { 321191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 322191783Srmacklem /* 323191783Srmacklem * Call lookup() to do the real work. If an error occurs, 324191783Srmacklem * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 325191783Srmacklem * we do not have to dereference anything before returning. 326191783Srmacklem * In either case ni_startdir will be dereferenced and NULLed 327191783Srmacklem * out. 328191783Srmacklem */ 329191783Srmacklem if (exp->nes_vfslocked) 330191783Srmacklem ndp->ni_cnd.cn_flags |= GIANTHELD; 331191783Srmacklem error = lookup(ndp); 332191783Srmacklem /* 333191783Srmacklem * The Giant lock should only change when 334191783Srmacklem * crossing mount points. 335191783Srmacklem */ 336191783Srmacklem if (crossmnt) { 337191783Srmacklem exp->nes_vfslocked = 338191783Srmacklem (ndp->ni_cnd.cn_flags & GIANTHELD) != 0; 339191783Srmacklem ndp->ni_cnd.cn_flags &= ~GIANTHELD; 340191783Srmacklem } 341191783Srmacklem if (error) 342191783Srmacklem break; 343191783Srmacklem 344191783Srmacklem /* 345191783Srmacklem * Check for encountering a symbolic link. Trivial 346191783Srmacklem * termination occurs if no symlink encountered. 347191783Srmacklem */ 348191783Srmacklem if ((cnp->cn_flags & ISSYMLINK) == 0) { 349191783Srmacklem if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0) 350191783Srmacklem nfsvno_relpathbuf(ndp); 351191783Srmacklem if (ndp->ni_vp && !lockleaf) 352191783Srmacklem NFSVOPUNLOCK(ndp->ni_vp, 0, p); 353191783Srmacklem break; 354191783Srmacklem } 355191783Srmacklem 356191783Srmacklem /* 357191783Srmacklem * Validate symlink 358191783Srmacklem */ 359191783Srmacklem if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 360191783Srmacklem NFSVOPUNLOCK(ndp->ni_dvp, 0, p); 361191783Srmacklem if (!(nd->nd_flag & ND_PUBLOOKUP)) { 362191783Srmacklem error = EINVAL; 363191783Srmacklem goto badlink2; 364191783Srmacklem } 365191783Srmacklem 366191783Srmacklem if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 367191783Srmacklem error = ELOOP; 368191783Srmacklem goto badlink2; 369191783Srmacklem } 370191783Srmacklem if (ndp->ni_pathlen > 1) 371191783Srmacklem cp = uma_zalloc(namei_zone, M_WAITOK); 372191783Srmacklem else 373191783Srmacklem cp = cnp->cn_pnbuf; 374191783Srmacklem aiov.iov_base = cp; 375191783Srmacklem aiov.iov_len = MAXPATHLEN; 376191783Srmacklem auio.uio_iov = &aiov; 377191783Srmacklem auio.uio_iovcnt = 1; 378191783Srmacklem auio.uio_offset = 0; 379191783Srmacklem auio.uio_rw = UIO_READ; 380191783Srmacklem auio.uio_segflg = UIO_SYSSPACE; 381191783Srmacklem auio.uio_td = NULL; 382191783Srmacklem auio.uio_resid = MAXPATHLEN; 383191783Srmacklem error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 384191783Srmacklem if (error) { 385191783Srmacklem badlink1: 386191783Srmacklem if (ndp->ni_pathlen > 1) 387191783Srmacklem uma_zfree(namei_zone, cp); 388191783Srmacklem badlink2: 389191783Srmacklem vrele(ndp->ni_dvp); 390191783Srmacklem vput(ndp->ni_vp); 391191783Srmacklem break; 392191783Srmacklem } 393191783Srmacklem linklen = MAXPATHLEN - auio.uio_resid; 394191783Srmacklem if (linklen == 0) { 395191783Srmacklem error = ENOENT; 396191783Srmacklem goto badlink1; 397191783Srmacklem } 398191783Srmacklem if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 399191783Srmacklem error = ENAMETOOLONG; 400191783Srmacklem goto badlink1; 401191783Srmacklem } 402191783Srmacklem 403191783Srmacklem /* 404191783Srmacklem * Adjust or replace path 405191783Srmacklem */ 406191783Srmacklem if (ndp->ni_pathlen > 1) { 407191783Srmacklem NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 408191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 409191783Srmacklem cnp->cn_pnbuf = cp; 410191783Srmacklem } else 411191783Srmacklem cnp->cn_pnbuf[linklen] = '\0'; 412191783Srmacklem ndp->ni_pathlen += linklen; 413191783Srmacklem 414191783Srmacklem /* 415191783Srmacklem * Cleanup refs for next loop and check if root directory 416191783Srmacklem * should replace current directory. Normally ni_dvp 417191783Srmacklem * becomes the new base directory and is cleaned up when 418191783Srmacklem * we loop. Explicitly null pointers after invalidation 419191783Srmacklem * to clarify operation. 420191783Srmacklem */ 421191783Srmacklem vput(ndp->ni_vp); 422191783Srmacklem ndp->ni_vp = NULL; 423191783Srmacklem 424191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 425191783Srmacklem vrele(ndp->ni_dvp); 426191783Srmacklem ndp->ni_dvp = ndp->ni_rootdir; 427191783Srmacklem VREF(ndp->ni_dvp); 428191783Srmacklem } 429191783Srmacklem ndp->ni_startdir = ndp->ni_dvp; 430191783Srmacklem ndp->ni_dvp = NULL; 431191783Srmacklem } 432191783Srmacklem if (!lockleaf) 433191783Srmacklem cnp->cn_flags &= ~LOCKLEAF; 434191783Srmacklem 435191783Srmacklemout: 436191783Srmacklem if (error) { 437191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 438191783Srmacklem ndp->ni_vp = NULL; 439191783Srmacklem ndp->ni_dvp = NULL; 440191783Srmacklem ndp->ni_startdir = NULL; 441191783Srmacklem cnp->cn_flags &= ~HASBUF; 442191783Srmacklem } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 443191783Srmacklem ndp->ni_dvp = NULL; 444191783Srmacklem } 445191783Srmacklem return (error); 446191783Srmacklem} 447191783Srmacklem 448191783Srmacklem/* 449191783Srmacklem * Set up a pathname buffer and return a pointer to it and, optionally 450191783Srmacklem * set a hash pointer. 451191783Srmacklem */ 452191783Srmacklemvoid 453191783Srmacklemnfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 454191783Srmacklem{ 455191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 456191783Srmacklem 457191783Srmacklem cnp->cn_flags |= (NOMACCHECK | HASBUF); 458191783Srmacklem cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 459191783Srmacklem if (hashpp != NULL) 460191783Srmacklem *hashpp = NULL; 461191783Srmacklem *bufpp = cnp->cn_pnbuf; 462191783Srmacklem} 463191783Srmacklem 464191783Srmacklem/* 465191783Srmacklem * Release the above path buffer, if not released by nfsvno_namei(). 466191783Srmacklem */ 467191783Srmacklemvoid 468191783Srmacklemnfsvno_relpathbuf(struct nameidata *ndp) 469191783Srmacklem{ 470191783Srmacklem 471191783Srmacklem if ((ndp->ni_cnd.cn_flags & HASBUF) == 0) 472191783Srmacklem panic("nfsrelpath"); 473191783Srmacklem uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 474191783Srmacklem ndp->ni_cnd.cn_flags &= ~HASBUF; 475191783Srmacklem} 476191783Srmacklem 477191783Srmacklem/* 478191783Srmacklem * Readlink vnode op into an mbuf list. 479191783Srmacklem */ 480191783Srmacklemint 481191783Srmacklemnfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p, 482191783Srmacklem struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 483191783Srmacklem{ 484191783Srmacklem struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; 485191783Srmacklem struct iovec *ivp = iv; 486191783Srmacklem struct uio io, *uiop = &io; 487191783Srmacklem struct mbuf *mp, *mp2 = NULL, *mp3 = NULL; 488191783Srmacklem int i, len, tlen, error; 489191783Srmacklem 490191783Srmacklem len = 0; 491191783Srmacklem i = 0; 492191783Srmacklem while (len < NFS_MAXPATHLEN) { 493191783Srmacklem NFSMGET(mp); 494191783Srmacklem MCLGET(mp, M_WAIT); 495191783Srmacklem mp->m_len = NFSMSIZ(mp); 496191783Srmacklem if (len == 0) { 497191783Srmacklem mp3 = mp2 = mp; 498191783Srmacklem } else { 499191783Srmacklem mp2->m_next = mp; 500191783Srmacklem mp2 = mp; 501191783Srmacklem } 502191783Srmacklem if ((len + mp->m_len) > NFS_MAXPATHLEN) { 503191783Srmacklem mp->m_len = NFS_MAXPATHLEN - len; 504191783Srmacklem len = NFS_MAXPATHLEN; 505191783Srmacklem } else { 506191783Srmacklem len += mp->m_len; 507191783Srmacklem } 508191783Srmacklem ivp->iov_base = mtod(mp, caddr_t); 509191783Srmacklem ivp->iov_len = mp->m_len; 510191783Srmacklem i++; 511191783Srmacklem ivp++; 512191783Srmacklem } 513191783Srmacklem uiop->uio_iov = iv; 514191783Srmacklem uiop->uio_iovcnt = i; 515191783Srmacklem uiop->uio_offset = 0; 516191783Srmacklem uiop->uio_resid = len; 517191783Srmacklem uiop->uio_rw = UIO_READ; 518191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 519191783Srmacklem uiop->uio_td = NULL; 520191783Srmacklem error = VOP_READLINK(vp, uiop, cred); 521191783Srmacklem if (error) { 522191783Srmacklem m_freem(mp3); 523191783Srmacklem *lenp = 0; 524191783Srmacklem return (error); 525191783Srmacklem } 526191783Srmacklem if (uiop->uio_resid > 0) { 527191783Srmacklem len -= uiop->uio_resid; 528191783Srmacklem tlen = NFSM_RNDUP(len); 529191783Srmacklem nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len); 530191783Srmacklem } 531191783Srmacklem *lenp = len; 532191783Srmacklem *mpp = mp3; 533191783Srmacklem *mpendp = mp; 534191783Srmacklem return (0); 535191783Srmacklem} 536191783Srmacklem 537191783Srmacklem/* 538191783Srmacklem * Read vnode op call into mbuf list. 539191783Srmacklem */ 540191783Srmacklemint 541191783Srmacklemnfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 542191783Srmacklem struct thread *p, struct mbuf **mpp, struct mbuf **mpendp) 543191783Srmacklem{ 544191783Srmacklem struct mbuf *m; 545191783Srmacklem int i; 546191783Srmacklem struct iovec *iv; 547191783Srmacklem struct iovec *iv2; 548191783Srmacklem int error = 0, len, left, siz, tlen, ioflag = 0, hi, try = 32; 549191783Srmacklem struct mbuf *m2 = NULL, *m3; 550191783Srmacklem struct uio io, *uiop = &io; 551191783Srmacklem struct nfsheur *nh; 552191783Srmacklem 553191783Srmacklem /* 554191783Srmacklem * Calculate seqcount for heuristic 555191783Srmacklem */ 556191783Srmacklem /* 557191783Srmacklem * Locate best candidate 558191783Srmacklem */ 559191783Srmacklem 560191783Srmacklem hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 561191783Srmacklem nh = &nfsheur[hi]; 562191783Srmacklem 563191783Srmacklem while (try--) { 564191783Srmacklem if (nfsheur[hi].nh_vp == vp) { 565191783Srmacklem nh = &nfsheur[hi]; 566191783Srmacklem break; 567191783Srmacklem } 568191783Srmacklem if (nfsheur[hi].nh_use > 0) 569191783Srmacklem --nfsheur[hi].nh_use; 570191783Srmacklem hi = (hi + 1) % NUM_HEURISTIC; 571191783Srmacklem if (nfsheur[hi].nh_use < nh->nh_use) 572191783Srmacklem nh = &nfsheur[hi]; 573191783Srmacklem } 574191783Srmacklem 575191783Srmacklem if (nh->nh_vp != vp) { 576191783Srmacklem nh->nh_vp = vp; 577191783Srmacklem nh->nh_nextr = off; 578191783Srmacklem nh->nh_use = NHUSE_INIT; 579191783Srmacklem if (off == 0) 580191783Srmacklem nh->nh_seqcount = 4; 581191783Srmacklem else 582191783Srmacklem nh->nh_seqcount = 1; 583191783Srmacklem } 584191783Srmacklem 585191783Srmacklem /* 586191783Srmacklem * Calculate heuristic 587191783Srmacklem */ 588191783Srmacklem 589191783Srmacklem if ((off == 0 && nh->nh_seqcount > 0) || off == nh->nh_nextr) { 590191783Srmacklem if (++nh->nh_seqcount > IO_SEQMAX) 591191783Srmacklem nh->nh_seqcount = IO_SEQMAX; 592191783Srmacklem } else if (nh->nh_seqcount > 1) { 593191783Srmacklem nh->nh_seqcount = 1; 594191783Srmacklem } else { 595191783Srmacklem nh->nh_seqcount = 0; 596191783Srmacklem } 597191783Srmacklem nh->nh_use += NHUSE_INC; 598191783Srmacklem if (nh->nh_use > NHUSE_MAX) 599191783Srmacklem nh->nh_use = NHUSE_MAX; 600191783Srmacklem ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 601191783Srmacklem 602191783Srmacklem len = left = NFSM_RNDUP(cnt); 603191783Srmacklem m3 = NULL; 604191783Srmacklem /* 605191783Srmacklem * Generate the mbuf list with the uio_iov ref. to it. 606191783Srmacklem */ 607191783Srmacklem i = 0; 608191783Srmacklem while (left > 0) { 609191783Srmacklem NFSMGET(m); 610191783Srmacklem MCLGET(m, M_WAIT); 611191783Srmacklem m->m_len = 0; 612191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 613191783Srmacklem left -= siz; 614191783Srmacklem i++; 615191783Srmacklem if (m3) 616191783Srmacklem m2->m_next = m; 617191783Srmacklem else 618191783Srmacklem m3 = m; 619191783Srmacklem m2 = m; 620191783Srmacklem } 621191783Srmacklem MALLOC(iv, struct iovec *, i * sizeof (struct iovec), 622191783Srmacklem M_TEMP, M_WAITOK); 623191783Srmacklem uiop->uio_iov = iv2 = iv; 624191783Srmacklem m = m3; 625191783Srmacklem left = len; 626191783Srmacklem i = 0; 627191783Srmacklem while (left > 0) { 628191783Srmacklem if (m == NULL) 629191783Srmacklem panic("nfsvno_read iov"); 630191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 631191783Srmacklem if (siz > 0) { 632191783Srmacklem iv->iov_base = mtod(m, caddr_t) + m->m_len; 633191783Srmacklem iv->iov_len = siz; 634191783Srmacklem m->m_len += siz; 635191783Srmacklem left -= siz; 636191783Srmacklem iv++; 637191783Srmacklem i++; 638191783Srmacklem } 639191783Srmacklem m = m->m_next; 640191783Srmacklem } 641191783Srmacklem uiop->uio_iovcnt = i; 642191783Srmacklem uiop->uio_offset = off; 643191783Srmacklem uiop->uio_resid = len; 644191783Srmacklem uiop->uio_rw = UIO_READ; 645191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 646191783Srmacklem error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 647191783Srmacklem FREE((caddr_t)iv2, M_TEMP); 648191783Srmacklem if (error) { 649191783Srmacklem m_freem(m3); 650191783Srmacklem *mpp = NULL; 651191783Srmacklem return (error); 652191783Srmacklem } 653191783Srmacklem tlen = len - uiop->uio_resid; 654191783Srmacklem cnt = cnt < tlen ? cnt : tlen; 655191783Srmacklem tlen = NFSM_RNDUP(cnt); 656191783Srmacklem if (tlen == 0) { 657191783Srmacklem m_freem(m3); 658191783Srmacklem m3 = NULL; 659191783Srmacklem } else if (len != tlen || tlen != cnt) 660191783Srmacklem nfsrv_adj(m3, len - tlen, tlen - cnt); 661191783Srmacklem *mpp = m3; 662191783Srmacklem *mpendp = m2; 663191783Srmacklem return (0); 664191783Srmacklem} 665191783Srmacklem 666191783Srmacklem/* 667191783Srmacklem * Write vnode op from an mbuf list. 668191783Srmacklem */ 669191783Srmacklemint 670191783Srmacklemnfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable, 671191783Srmacklem struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 672191783Srmacklem{ 673191783Srmacklem struct iovec *ivp; 674191783Srmacklem int i, len; 675191783Srmacklem struct iovec *iv; 676191783Srmacklem int ioflags, error; 677191783Srmacklem struct uio io, *uiop = &io; 678191783Srmacklem 679191783Srmacklem MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP, 680191783Srmacklem M_WAITOK); 681191783Srmacklem uiop->uio_iov = iv = ivp; 682191783Srmacklem uiop->uio_iovcnt = cnt; 683191783Srmacklem i = mtod(mp, caddr_t) + mp->m_len - cp; 684191783Srmacklem len = retlen; 685191783Srmacklem while (len > 0) { 686191783Srmacklem if (mp == NULL) 687191783Srmacklem panic("nfsvno_write"); 688191783Srmacklem if (i > 0) { 689191783Srmacklem i = min(i, len); 690191783Srmacklem ivp->iov_base = cp; 691191783Srmacklem ivp->iov_len = i; 692191783Srmacklem ivp++; 693191783Srmacklem len -= i; 694191783Srmacklem } 695191783Srmacklem mp = mp->m_next; 696191783Srmacklem if (mp) { 697191783Srmacklem i = mp->m_len; 698191783Srmacklem cp = mtod(mp, caddr_t); 699191783Srmacklem } 700191783Srmacklem } 701191783Srmacklem 702191783Srmacklem if (stable == NFSWRITE_UNSTABLE) 703191783Srmacklem ioflags = IO_NODELOCKED; 704191783Srmacklem else 705191783Srmacklem ioflags = (IO_SYNC | IO_NODELOCKED); 706191783Srmacklem uiop->uio_resid = retlen; 707191783Srmacklem uiop->uio_rw = UIO_WRITE; 708191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 709191783Srmacklem NFSUIOPROC(uiop, p); 710191783Srmacklem uiop->uio_offset = off; 711191783Srmacklem error = VOP_WRITE(vp, uiop, ioflags, cred); 712191783Srmacklem FREE((caddr_t)iv, M_TEMP); 713191783Srmacklem return (error); 714191783Srmacklem} 715191783Srmacklem 716191783Srmacklem/* 717191783Srmacklem * Common code for creating a regular file (plus special files for V2). 718191783Srmacklem */ 719191783Srmacklemint 720191783Srmacklemnfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 721191783Srmacklem struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 722199616Srmacklem int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp) 723191783Srmacklem{ 724191783Srmacklem u_quad_t tempsize; 725191783Srmacklem int error; 726191783Srmacklem 727191783Srmacklem error = nd->nd_repstat; 728191783Srmacklem if (!error && ndp->ni_vp == NULL) { 729191783Srmacklem if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 730191783Srmacklem vrele(ndp->ni_startdir); 731191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, 732191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 733191783Srmacklem vput(ndp->ni_dvp); 734191783Srmacklem nfsvno_relpathbuf(ndp); 735191783Srmacklem if (!error) { 736191783Srmacklem if (*exclusive_flagp) { 737191783Srmacklem *exclusive_flagp = 0; 738191783Srmacklem NFSVNO_ATTRINIT(nvap); 739199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 740199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 741191783Srmacklem error = VOP_SETATTR(ndp->ni_vp, 742191783Srmacklem &nvap->na_vattr, nd->nd_cred); 743191783Srmacklem } 744191783Srmacklem } 745191783Srmacklem /* 746191783Srmacklem * NFS V2 Only. nfsrvd_mknod() does this for V3. 747191783Srmacklem * (This implies, just get out on an error.) 748191783Srmacklem */ 749191783Srmacklem } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 750191783Srmacklem nvap->na_type == VFIFO) { 751191783Srmacklem if (nvap->na_type == VCHR && rdev == 0xffffffff) 752191783Srmacklem nvap->na_type = VFIFO; 753191783Srmacklem if (nvap->na_type != VFIFO && 754191783Srmacklem (error = priv_check_cred(nd->nd_cred, 755191783Srmacklem PRIV_VFS_MKNOD_DEV, 0))) { 756191783Srmacklem vrele(ndp->ni_startdir); 757191783Srmacklem nfsvno_relpathbuf(ndp); 758191783Srmacklem vput(ndp->ni_dvp); 759191783Srmacklem return (error); 760191783Srmacklem } 761191783Srmacklem nvap->na_rdev = rdev; 762191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 763191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 764191783Srmacklem vput(ndp->ni_dvp); 765191783Srmacklem nfsvno_relpathbuf(ndp); 766191783Srmacklem if (error) { 767191783Srmacklem vrele(ndp->ni_startdir); 768191783Srmacklem return (error); 769191783Srmacklem } 770191783Srmacklem } else { 771191783Srmacklem vrele(ndp->ni_startdir); 772191783Srmacklem nfsvno_relpathbuf(ndp); 773191783Srmacklem vput(ndp->ni_dvp); 774191783Srmacklem return (ENXIO); 775191783Srmacklem } 776191783Srmacklem *vpp = ndp->ni_vp; 777191783Srmacklem } else { 778191783Srmacklem /* 779191783Srmacklem * Handle cases where error is already set and/or 780191783Srmacklem * the file exists. 781191783Srmacklem * 1 - clean up the lookup 782191783Srmacklem * 2 - iff !error and na_size set, truncate it 783191783Srmacklem */ 784191783Srmacklem vrele(ndp->ni_startdir); 785191783Srmacklem nfsvno_relpathbuf(ndp); 786191783Srmacklem *vpp = ndp->ni_vp; 787191783Srmacklem if (ndp->ni_dvp == *vpp) 788191783Srmacklem vrele(ndp->ni_dvp); 789191783Srmacklem else 790191783Srmacklem vput(ndp->ni_dvp); 791191783Srmacklem if (!error && nvap->na_size != VNOVAL) { 792200999Srmacklem error = nfsvno_accchk(*vpp, VWRITE, 793191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 794200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 795191783Srmacklem if (!error) { 796191783Srmacklem tempsize = nvap->na_size; 797191783Srmacklem NFSVNO_ATTRINIT(nvap); 798191783Srmacklem nvap->na_size = tempsize; 799191783Srmacklem error = VOP_SETATTR(*vpp, 800191783Srmacklem &nvap->na_vattr, nd->nd_cred); 801191783Srmacklem } 802191783Srmacklem } 803191783Srmacklem if (error) 804191783Srmacklem vput(*vpp); 805191783Srmacklem } 806191783Srmacklem return (error); 807191783Srmacklem} 808191783Srmacklem 809191783Srmacklem/* 810191783Srmacklem * Do a mknod vnode op. 811191783Srmacklem */ 812191783Srmacklemint 813191783Srmacklemnfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, 814191783Srmacklem struct thread *p) 815191783Srmacklem{ 816191783Srmacklem int error = 0; 817191783Srmacklem enum vtype vtyp; 818191783Srmacklem 819191783Srmacklem vtyp = nvap->na_type; 820191783Srmacklem /* 821191783Srmacklem * Iff doesn't exist, create it. 822191783Srmacklem */ 823191783Srmacklem if (ndp->ni_vp) { 824191783Srmacklem vrele(ndp->ni_startdir); 825191783Srmacklem nfsvno_relpathbuf(ndp); 826191783Srmacklem vput(ndp->ni_dvp); 827191783Srmacklem vrele(ndp->ni_vp); 828191783Srmacklem return (EEXIST); 829191783Srmacklem } 830191783Srmacklem if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { 831191783Srmacklem vrele(ndp->ni_startdir); 832191783Srmacklem nfsvno_relpathbuf(ndp); 833191783Srmacklem vput(ndp->ni_dvp); 834191783Srmacklem return (NFSERR_BADTYPE); 835191783Srmacklem } 836191783Srmacklem if (vtyp == VSOCK) { 837191783Srmacklem vrele(ndp->ni_startdir); 838191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, 839191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 840191783Srmacklem vput(ndp->ni_dvp); 841191783Srmacklem nfsvno_relpathbuf(ndp); 842191783Srmacklem } else { 843191783Srmacklem if (nvap->na_type != VFIFO && 844191783Srmacklem (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) { 845191783Srmacklem vrele(ndp->ni_startdir); 846191783Srmacklem nfsvno_relpathbuf(ndp); 847191783Srmacklem vput(ndp->ni_dvp); 848191783Srmacklem return (error); 849191783Srmacklem } 850191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 851191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 852191783Srmacklem vput(ndp->ni_dvp); 853191783Srmacklem nfsvno_relpathbuf(ndp); 854191783Srmacklem if (error) 855191783Srmacklem vrele(ndp->ni_startdir); 856191783Srmacklem /* 857191783Srmacklem * Since VOP_MKNOD returns the ni_vp, I can't 858191783Srmacklem * see any reason to do the lookup. 859191783Srmacklem */ 860191783Srmacklem } 861191783Srmacklem return (error); 862191783Srmacklem} 863191783Srmacklem 864191783Srmacklem/* 865191783Srmacklem * Mkdir vnode op. 866191783Srmacklem */ 867191783Srmacklemint 868191783Srmacklemnfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, 869191783Srmacklem struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 870191783Srmacklem{ 871191783Srmacklem int error = 0; 872191783Srmacklem 873191783Srmacklem if (ndp->ni_vp != NULL) { 874191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 875191783Srmacklem vrele(ndp->ni_dvp); 876191783Srmacklem else 877191783Srmacklem vput(ndp->ni_dvp); 878191783Srmacklem vrele(ndp->ni_vp); 879206063Srmacklem nfsvno_relpathbuf(ndp); 880191783Srmacklem return (EEXIST); 881191783Srmacklem } 882191783Srmacklem error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 883191783Srmacklem &nvap->na_vattr); 884191783Srmacklem vput(ndp->ni_dvp); 885191783Srmacklem nfsvno_relpathbuf(ndp); 886191783Srmacklem return (error); 887191783Srmacklem} 888191783Srmacklem 889191783Srmacklem/* 890191783Srmacklem * symlink vnode op. 891191783Srmacklem */ 892191783Srmacklemint 893191783Srmacklemnfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, 894191783Srmacklem int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, 895191783Srmacklem struct nfsexstuff *exp) 896191783Srmacklem{ 897191783Srmacklem int error = 0; 898191783Srmacklem 899191783Srmacklem if (ndp->ni_vp) { 900191783Srmacklem vrele(ndp->ni_startdir); 901191783Srmacklem nfsvno_relpathbuf(ndp); 902191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 903191783Srmacklem vrele(ndp->ni_dvp); 904191783Srmacklem else 905191783Srmacklem vput(ndp->ni_dvp); 906191783Srmacklem vrele(ndp->ni_vp); 907191783Srmacklem return (EEXIST); 908191783Srmacklem } 909191783Srmacklem 910191783Srmacklem error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 911191783Srmacklem &nvap->na_vattr, pathcp); 912191783Srmacklem vput(ndp->ni_dvp); 913191783Srmacklem vrele(ndp->ni_startdir); 914191783Srmacklem nfsvno_relpathbuf(ndp); 915191783Srmacklem /* 916191783Srmacklem * Although FreeBSD still had the lookup code in 917191783Srmacklem * it for 7/current, there doesn't seem to be any 918191783Srmacklem * point, since VOP_SYMLINK() returns the ni_vp. 919191783Srmacklem * Just vput it for v2. 920191783Srmacklem */ 921191783Srmacklem if (!not_v2 && !error) 922191783Srmacklem vput(ndp->ni_vp); 923191783Srmacklem return (error); 924191783Srmacklem} 925191783Srmacklem 926191783Srmacklem/* 927191783Srmacklem * Parse symbolic link arguments. 928191783Srmacklem * This function has an ugly side effect. It will MALLOC() an area for 929191783Srmacklem * the symlink and set iov_base to point to it, only if it succeeds. 930191783Srmacklem * So, if it returns with uiop->uio_iov->iov_base != NULL, that must 931191783Srmacklem * be FREE'd later. 932191783Srmacklem */ 933191783Srmacklemint 934191783Srmacklemnfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, 935191783Srmacklem struct thread *p, char **pathcpp, int *lenp) 936191783Srmacklem{ 937191783Srmacklem u_int32_t *tl; 938191783Srmacklem char *pathcp = NULL; 939191783Srmacklem int error = 0, len; 940191783Srmacklem struct nfsv2_sattr *sp; 941191783Srmacklem 942191783Srmacklem *pathcpp = NULL; 943191783Srmacklem *lenp = 0; 944191783Srmacklem if ((nd->nd_flag & ND_NFSV3) && 945191783Srmacklem (error = nfsrv_sattr(nd, nvap, NULL, NULL, p))) 946191783Srmacklem goto nfsmout; 947191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 948191783Srmacklem len = fxdr_unsigned(int, *tl); 949191783Srmacklem if (len > NFS_MAXPATHLEN || len <= 0) { 950191783Srmacklem error = EBADRPC; 951191783Srmacklem goto nfsmout; 952191783Srmacklem } 953191783Srmacklem MALLOC(pathcp, caddr_t, len + 1, M_TEMP, M_WAITOK); 954191783Srmacklem error = nfsrv_mtostr(nd, pathcp, len); 955191783Srmacklem if (error) 956191783Srmacklem goto nfsmout; 957191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 958191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 959191783Srmacklem nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); 960191783Srmacklem } 961191783Srmacklem *pathcpp = pathcp; 962191783Srmacklem *lenp = len; 963191783Srmacklem return (0); 964191783Srmacklemnfsmout: 965191783Srmacklem if (pathcp) 966191783Srmacklem free(pathcp, M_TEMP); 967191783Srmacklem return (error); 968191783Srmacklem} 969191783Srmacklem 970191783Srmacklem/* 971191783Srmacklem * Remove a non-directory object. 972191783Srmacklem */ 973191783Srmacklemint 974191783Srmacklemnfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred, 975191783Srmacklem struct thread *p, struct nfsexstuff *exp) 976191783Srmacklem{ 977191783Srmacklem struct vnode *vp; 978191783Srmacklem int error = 0; 979191783Srmacklem 980191783Srmacklem vp = ndp->ni_vp; 981191783Srmacklem if (vp->v_type == VDIR) 982191783Srmacklem error = NFSERR_ISDIR; 983191783Srmacklem else if (is_v4) 984191783Srmacklem error = nfsrv_checkremove(vp, 1, p); 985191783Srmacklem if (!error) 986191783Srmacklem error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); 987191783Srmacklem if (ndp->ni_dvp == vp) 988191783Srmacklem vrele(ndp->ni_dvp); 989191783Srmacklem else 990191783Srmacklem vput(ndp->ni_dvp); 991191783Srmacklem vput(vp); 992191783Srmacklem return (error); 993191783Srmacklem} 994191783Srmacklem 995191783Srmacklem/* 996191783Srmacklem * Remove a directory. 997191783Srmacklem */ 998191783Srmacklemint 999191783Srmacklemnfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1000191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1001191783Srmacklem{ 1002191783Srmacklem struct vnode *vp; 1003191783Srmacklem int error = 0; 1004191783Srmacklem 1005191783Srmacklem vp = ndp->ni_vp; 1006191783Srmacklem if (vp->v_type != VDIR) { 1007191783Srmacklem error = ENOTDIR; 1008191783Srmacklem goto out; 1009191783Srmacklem } 1010191783Srmacklem /* 1011191783Srmacklem * No rmdir "." please. 1012191783Srmacklem */ 1013191783Srmacklem if (ndp->ni_dvp == vp) { 1014191783Srmacklem error = EINVAL; 1015191783Srmacklem goto out; 1016191783Srmacklem } 1017191783Srmacklem /* 1018191783Srmacklem * The root of a mounted filesystem cannot be deleted. 1019191783Srmacklem */ 1020191783Srmacklem if (vp->v_vflag & VV_ROOT) 1021191783Srmacklem error = EBUSY; 1022191783Srmacklemout: 1023191783Srmacklem if (!error) 1024191783Srmacklem error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); 1025191783Srmacklem if (ndp->ni_dvp == vp) 1026191783Srmacklem vrele(ndp->ni_dvp); 1027191783Srmacklem else 1028191783Srmacklem vput(ndp->ni_dvp); 1029191783Srmacklem vput(vp); 1030191783Srmacklem return (error); 1031191783Srmacklem} 1032191783Srmacklem 1033191783Srmacklem/* 1034191783Srmacklem * Rename vnode op. 1035191783Srmacklem */ 1036191783Srmacklemint 1037191783Srmacklemnfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, 1038191783Srmacklem u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p) 1039191783Srmacklem{ 1040191783Srmacklem struct vnode *fvp, *tvp, *tdvp; 1041191783Srmacklem int error = 0; 1042191783Srmacklem 1043191783Srmacklem fvp = fromndp->ni_vp; 1044191783Srmacklem if (ndstat) { 1045191783Srmacklem vrele(fromndp->ni_dvp); 1046191783Srmacklem vrele(fvp); 1047191783Srmacklem error = ndstat; 1048191783Srmacklem goto out1; 1049191783Srmacklem } 1050191783Srmacklem tdvp = tondp->ni_dvp; 1051191783Srmacklem tvp = tondp->ni_vp; 1052191783Srmacklem if (tvp != NULL) { 1053191783Srmacklem if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1054191783Srmacklem error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST; 1055191783Srmacklem goto out; 1056191783Srmacklem } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1057191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST; 1058191783Srmacklem goto out; 1059191783Srmacklem } 1060191783Srmacklem if (tvp->v_type == VDIR && tvp->v_mountedhere) { 1061191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1062191783Srmacklem goto out; 1063191783Srmacklem } 1064191783Srmacklem 1065191783Srmacklem /* 1066191783Srmacklem * A rename to '.' or '..' results in a prematurely 1067191783Srmacklem * unlocked vnode on FreeBSD5, so I'm just going to fail that 1068191783Srmacklem * here. 1069191783Srmacklem */ 1070191783Srmacklem if ((tondp->ni_cnd.cn_namelen == 1 && 1071191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.') || 1072191783Srmacklem (tondp->ni_cnd.cn_namelen == 2 && 1073191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.' && 1074191783Srmacklem tondp->ni_cnd.cn_nameptr[1] == '.')) { 1075191783Srmacklem error = EINVAL; 1076191783Srmacklem goto out; 1077191783Srmacklem } 1078191783Srmacklem } 1079191783Srmacklem if (fvp->v_type == VDIR && fvp->v_mountedhere) { 1080191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1081191783Srmacklem goto out; 1082191783Srmacklem } 1083191783Srmacklem if (fvp->v_mount != tdvp->v_mount) { 1084191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1085191783Srmacklem goto out; 1086191783Srmacklem } 1087191783Srmacklem if (fvp == tdvp) { 1088191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL; 1089191783Srmacklem goto out; 1090191783Srmacklem } 1091191783Srmacklem if (fvp == tvp) { 1092191783Srmacklem /* 1093191783Srmacklem * If source and destination are the same, there is nothing to 1094191783Srmacklem * do. Set error to -1 to indicate this. 1095191783Srmacklem */ 1096191783Srmacklem error = -1; 1097191783Srmacklem goto out; 1098191783Srmacklem } 1099191783Srmacklem if (ndflag & ND_NFSV4) { 1100191783Srmacklem NFSVOPLOCK(fvp, LK_EXCLUSIVE | LK_RETRY, p); 1101191783Srmacklem error = nfsrv_checkremove(fvp, 0, p); 1102191783Srmacklem NFSVOPUNLOCK(fvp, 0, p); 1103191783Srmacklem if (tvp && !error) 1104191783Srmacklem error = nfsrv_checkremove(tvp, 1, p); 1105191783Srmacklem } else { 1106191783Srmacklem /* 1107191783Srmacklem * For NFSv2 and NFSv3, try to get rid of the delegation, so 1108191783Srmacklem * that the NFSv4 client won't be confused by the rename. 1109191783Srmacklem * Since nfsd_recalldelegation() can only be called on an 1110191783Srmacklem * unlocked vnode at this point and fvp is the file that will 1111191783Srmacklem * still exist after the rename, just do fvp. 1112191783Srmacklem */ 1113191783Srmacklem nfsd_recalldelegation(fvp, p); 1114191783Srmacklem } 1115191783Srmacklemout: 1116191783Srmacklem if (!error) { 1117191783Srmacklem error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, 1118191783Srmacklem &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, 1119191783Srmacklem &tondp->ni_cnd); 1120191783Srmacklem } else { 1121191783Srmacklem if (tdvp == tvp) 1122191783Srmacklem vrele(tdvp); 1123191783Srmacklem else 1124191783Srmacklem vput(tdvp); 1125191783Srmacklem if (tvp) 1126191783Srmacklem vput(tvp); 1127191783Srmacklem vrele(fromndp->ni_dvp); 1128191783Srmacklem vrele(fvp); 1129191783Srmacklem if (error == -1) 1130191783Srmacklem error = 0; 1131191783Srmacklem } 1132191783Srmacklem vrele(tondp->ni_startdir); 1133191783Srmacklem nfsvno_relpathbuf(tondp); 1134191783Srmacklemout1: 1135191783Srmacklem vrele(fromndp->ni_startdir); 1136191783Srmacklem nfsvno_relpathbuf(fromndp); 1137191783Srmacklem return (error); 1138191783Srmacklem} 1139191783Srmacklem 1140191783Srmacklem/* 1141191783Srmacklem * Link vnode op. 1142191783Srmacklem */ 1143191783Srmacklemint 1144191783Srmacklemnfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred, 1145191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1146191783Srmacklem{ 1147191783Srmacklem struct vnode *xp; 1148191783Srmacklem int error = 0; 1149191783Srmacklem 1150191783Srmacklem xp = ndp->ni_vp; 1151191783Srmacklem if (xp != NULL) { 1152191783Srmacklem error = EEXIST; 1153191783Srmacklem } else { 1154191783Srmacklem xp = ndp->ni_dvp; 1155191783Srmacklem if (vp->v_mount != xp->v_mount) 1156191783Srmacklem error = EXDEV; 1157191783Srmacklem } 1158191783Srmacklem if (!error) { 1159191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 1160191783Srmacklem error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); 1161191783Srmacklem if (ndp->ni_dvp == vp) 1162191783Srmacklem vrele(ndp->ni_dvp); 1163191783Srmacklem else 1164191783Srmacklem vput(ndp->ni_dvp); 1165191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 1166191783Srmacklem } else { 1167191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1168191783Srmacklem vrele(ndp->ni_dvp); 1169191783Srmacklem else 1170191783Srmacklem vput(ndp->ni_dvp); 1171191783Srmacklem if (ndp->ni_vp) 1172191783Srmacklem vrele(ndp->ni_vp); 1173191783Srmacklem } 1174191783Srmacklem nfsvno_relpathbuf(ndp); 1175191783Srmacklem return (error); 1176191783Srmacklem} 1177191783Srmacklem 1178191783Srmacklem/* 1179191783Srmacklem * Do the fsync() appropriate for the commit. 1180191783Srmacklem */ 1181191783Srmacklemint 1182191783Srmacklemnfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, 1183191783Srmacklem struct thread *td) 1184191783Srmacklem{ 1185191783Srmacklem int error = 0; 1186191783Srmacklem 1187191783Srmacklem if (cnt > MAX_COMMIT_COUNT) { 1188191783Srmacklem /* 1189191783Srmacklem * Give up and do the whole thing 1190191783Srmacklem */ 1191191783Srmacklem if (vp->v_object && 1192191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1193191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1194191783Srmacklem vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC); 1195191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1196191783Srmacklem } 1197191783Srmacklem error = VOP_FSYNC(vp, MNT_WAIT, td); 1198191783Srmacklem } else { 1199191783Srmacklem /* 1200191783Srmacklem * Locate and synchronously write any buffers that fall 1201191783Srmacklem * into the requested range. Note: we are assuming that 1202191783Srmacklem * f_iosize is a power of 2. 1203191783Srmacklem */ 1204191783Srmacklem int iosize = vp->v_mount->mnt_stat.f_iosize; 1205191783Srmacklem int iomask = iosize - 1; 1206191783Srmacklem struct bufobj *bo; 1207191783Srmacklem daddr_t lblkno; 1208191783Srmacklem 1209191783Srmacklem /* 1210191783Srmacklem * Align to iosize boundry, super-align to page boundry. 1211191783Srmacklem */ 1212191783Srmacklem if (off & iomask) { 1213191783Srmacklem cnt += off & iomask; 1214191783Srmacklem off &= ~(u_quad_t)iomask; 1215191783Srmacklem } 1216191783Srmacklem if (off & PAGE_MASK) { 1217191783Srmacklem cnt += off & PAGE_MASK; 1218191783Srmacklem off &= ~(u_quad_t)PAGE_MASK; 1219191783Srmacklem } 1220191783Srmacklem lblkno = off / iosize; 1221191783Srmacklem 1222191783Srmacklem if (vp->v_object && 1223191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1224191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1225191783Srmacklem vm_object_page_clean(vp->v_object, off / PAGE_SIZE, (cnt + PAGE_MASK) / PAGE_SIZE, OBJPC_SYNC); 1226191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1227191783Srmacklem } 1228191783Srmacklem 1229191783Srmacklem bo = &vp->v_bufobj; 1230191783Srmacklem BO_LOCK(bo); 1231191783Srmacklem while (cnt > 0) { 1232191783Srmacklem struct buf *bp; 1233191783Srmacklem 1234191783Srmacklem /* 1235191783Srmacklem * If we have a buffer and it is marked B_DELWRI we 1236191783Srmacklem * have to lock and write it. Otherwise the prior 1237191783Srmacklem * write is assumed to have already been committed. 1238191783Srmacklem * 1239191783Srmacklem * gbincore() can return invalid buffers now so we 1240191783Srmacklem * have to check that bit as well (though B_DELWRI 1241191783Srmacklem * should not be set if B_INVAL is set there could be 1242191783Srmacklem * a race here since we haven't locked the buffer). 1243191783Srmacklem */ 1244191783Srmacklem if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { 1245191783Srmacklem if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | 1246191783Srmacklem LK_INTERLOCK, BO_MTX(bo)) == ENOLCK) { 1247191783Srmacklem BO_LOCK(bo); 1248191783Srmacklem continue; /* retry */ 1249191783Srmacklem } 1250191783Srmacklem if ((bp->b_flags & (B_DELWRI|B_INVAL)) == 1251191783Srmacklem B_DELWRI) { 1252191783Srmacklem bremfree(bp); 1253191783Srmacklem bp->b_flags &= ~B_ASYNC; 1254191783Srmacklem bwrite(bp); 1255191783Srmacklem ++nfs_commit_miss; 1256191783Srmacklem } else 1257191783Srmacklem BUF_UNLOCK(bp); 1258191783Srmacklem BO_LOCK(bo); 1259191783Srmacklem } 1260191783Srmacklem ++nfs_commit_blks; 1261191783Srmacklem if (cnt < iosize) 1262191783Srmacklem break; 1263191783Srmacklem cnt -= iosize; 1264191783Srmacklem ++lblkno; 1265191783Srmacklem } 1266191783Srmacklem BO_UNLOCK(bo); 1267191783Srmacklem } 1268191783Srmacklem return (error); 1269191783Srmacklem} 1270191783Srmacklem 1271191783Srmacklem/* 1272191783Srmacklem * Statfs vnode op. 1273191783Srmacklem */ 1274191783Srmacklemint 1275191990Sattilionfsvno_statfs(struct vnode *vp, struct statfs *sf) 1276191783Srmacklem{ 1277191783Srmacklem 1278191990Sattilio return (VFS_STATFS(vp->v_mount, sf)); 1279191783Srmacklem} 1280191783Srmacklem 1281191783Srmacklem/* 1282191783Srmacklem * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1283191783Srmacklem * must handle nfsrv_opencheck() calls after any other access checks. 1284191783Srmacklem */ 1285191783Srmacklemvoid 1286191783Srmacklemnfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1287191783Srmacklem nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1288199616Srmacklem int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, 1289191783Srmacklem NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p, 1290191783Srmacklem struct nfsexstuff *exp, struct vnode **vpp) 1291191783Srmacklem{ 1292191783Srmacklem struct vnode *vp = NULL; 1293191783Srmacklem u_quad_t tempsize; 1294191783Srmacklem struct nfsexstuff nes; 1295191783Srmacklem 1296191783Srmacklem if (ndp->ni_vp == NULL) 1297191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1298191783Srmacklem stateidp, stp, NULL, nd, p, nd->nd_repstat); 1299191783Srmacklem if (!nd->nd_repstat) { 1300191783Srmacklem if (ndp->ni_vp == NULL) { 1301191783Srmacklem vrele(ndp->ni_startdir); 1302191783Srmacklem nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1303191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1304191783Srmacklem vput(ndp->ni_dvp); 1305191783Srmacklem nfsvno_relpathbuf(ndp); 1306191783Srmacklem if (!nd->nd_repstat) { 1307191783Srmacklem if (*exclusive_flagp) { 1308191783Srmacklem *exclusive_flagp = 0; 1309191783Srmacklem NFSVNO_ATTRINIT(nvap); 1310199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 1311199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 1312191783Srmacklem nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1313191783Srmacklem &nvap->na_vattr, cred); 1314191783Srmacklem } else { 1315191783Srmacklem nfsrv_fixattr(nd, ndp->ni_vp, nvap, 1316191783Srmacklem aclp, p, attrbitp, exp); 1317191783Srmacklem } 1318191783Srmacklem } 1319191783Srmacklem vp = ndp->ni_vp; 1320191783Srmacklem } else { 1321191783Srmacklem if (ndp->ni_startdir) 1322191783Srmacklem vrele(ndp->ni_startdir); 1323191783Srmacklem nfsvno_relpathbuf(ndp); 1324191783Srmacklem vp = ndp->ni_vp; 1325191783Srmacklem if (create == NFSV4OPEN_CREATE) { 1326191783Srmacklem if (ndp->ni_dvp == vp) 1327191783Srmacklem vrele(ndp->ni_dvp); 1328191783Srmacklem else 1329191783Srmacklem vput(ndp->ni_dvp); 1330191783Srmacklem } 1331191783Srmacklem if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 1332191783Srmacklem if (ndp->ni_cnd.cn_flags & RDONLY) 1333191783Srmacklem NFSVNO_SETEXRDONLY(&nes); 1334191783Srmacklem else 1335191783Srmacklem NFSVNO_EXINIT(&nes); 1336191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, 1337200999Srmacklem VWRITE, cred, &nes, p, 1338200999Srmacklem NFSACCCHK_NOOVERRIDE, 1339200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1340191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1341191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1342191783Srmacklem if (!nd->nd_repstat) { 1343191783Srmacklem tempsize = nvap->na_size; 1344191783Srmacklem NFSVNO_ATTRINIT(nvap); 1345191783Srmacklem nvap->na_size = tempsize; 1346191783Srmacklem nd->nd_repstat = VOP_SETATTR(vp, 1347191783Srmacklem &nvap->na_vattr, cred); 1348191783Srmacklem } 1349191783Srmacklem } else if (vp->v_type == VREG) { 1350191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1351191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1352191783Srmacklem } 1353191783Srmacklem } 1354191783Srmacklem } else { 1355191783Srmacklem if (ndp->ni_cnd.cn_flags & HASBUF) 1356191783Srmacklem nfsvno_relpathbuf(ndp); 1357191783Srmacklem if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) { 1358191783Srmacklem vrele(ndp->ni_startdir); 1359191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1360191783Srmacklem vrele(ndp->ni_dvp); 1361191783Srmacklem else 1362191783Srmacklem vput(ndp->ni_dvp); 1363191783Srmacklem if (ndp->ni_vp) 1364191783Srmacklem vput(ndp->ni_vp); 1365191783Srmacklem } 1366191783Srmacklem } 1367191783Srmacklem *vpp = vp; 1368191783Srmacklem} 1369191783Srmacklem 1370191783Srmacklem/* 1371191783Srmacklem * Updates the file rev and sets the mtime and ctime 1372191783Srmacklem * to the current clock time, returning the va_filerev and va_Xtime 1373191783Srmacklem * values. 1374191783Srmacklem */ 1375191783Srmacklemvoid 1376191783Srmacklemnfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 1377191783Srmacklem struct ucred *cred, struct thread *p) 1378191783Srmacklem{ 1379191783Srmacklem struct vattr va; 1380191783Srmacklem 1381191783Srmacklem VATTR_NULL(&va); 1382191783Srmacklem getnanotime(&va.va_mtime); 1383191783Srmacklem (void) VOP_SETATTR(vp, &va, cred); 1384216693Srmacklem (void) nfsvno_getattr(vp, nvap, cred, p, 1); 1385191783Srmacklem} 1386191783Srmacklem 1387191783Srmacklem/* 1388191783Srmacklem * Glue routine to nfsv4_fillattr(). 1389191783Srmacklem */ 1390191783Srmacklemint 1391191783Srmacklemnfsvno_fillattr(struct nfsrv_descript *nd, struct vnode *vp, 1392191783Srmacklem struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 1393191783Srmacklem struct ucred *cred, struct thread *p, int isdgram, int reterr) 1394191783Srmacklem{ 1395191783Srmacklem int error; 1396191783Srmacklem 1397191783Srmacklem error = nfsv4_fillattr(nd, vp, NULL, &nvap->na_vattr, fhp, rderror, 1398191783Srmacklem attrbitp, cred, p, isdgram, reterr); 1399191783Srmacklem return (error); 1400191783Srmacklem} 1401191783Srmacklem 1402191783Srmacklem/* Since the Readdir vnode ops vary, put the entire functions in here. */ 1403191783Srmacklem/* 1404191783Srmacklem * nfs readdir service 1405191783Srmacklem * - mallocs what it thinks is enough to read 1406191783Srmacklem * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 1407206170Srmacklem * - calls VOP_READDIR() 1408191783Srmacklem * - loops around building the reply 1409191783Srmacklem * if the output generated exceeds count break out of loop 1410191783Srmacklem * The NFSM_CLGET macro is used here so that the reply will be packed 1411191783Srmacklem * tightly in mbuf clusters. 1412191783Srmacklem * - it trims out records with d_fileno == 0 1413191783Srmacklem * this doesn't matter for Unix clients, but they might confuse clients 1414191783Srmacklem * for other os'. 1415191783Srmacklem * - it trims out records with d_type == DT_WHT 1416191783Srmacklem * these cannot be seen through NFS (unless we extend the protocol) 1417191783Srmacklem * The alternate call nfsrvd_readdirplus() does lookups as well. 1418191783Srmacklem * PS: The NFS protocol spec. does not clarify what the "count" byte 1419191783Srmacklem * argument is a count of.. just name strings and file id's or the 1420191783Srmacklem * entire reply rpc or ... 1421191783Srmacklem * I tried just file name and id sizes and it confused the Sun client, 1422191783Srmacklem * so I am using the full rpc size now. The "paranoia.." comment refers 1423191783Srmacklem * to including the status longwords that are not a part of the dir. 1424191783Srmacklem * "entry" structures, but are in the rpc. 1425191783Srmacklem */ 1426191783Srmacklemint 1427191783Srmacklemnfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 1428191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1429191783Srmacklem{ 1430191783Srmacklem struct dirent *dp; 1431191783Srmacklem u_int32_t *tl; 1432191783Srmacklem int dirlen; 1433191783Srmacklem char *cpos, *cend, *rbuf; 1434191783Srmacklem struct nfsvattr at; 1435191783Srmacklem int nlen, error = 0, getret = 1; 1436191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies; 1437191783Srmacklem u_int64_t off, toff, verf; 1438191783Srmacklem u_long *cookies = NULL, *cookiep; 1439191783Srmacklem struct uio io; 1440191783Srmacklem struct iovec iv; 1441216691Srmacklem int not_zfs; 1442191783Srmacklem 1443191783Srmacklem if (nd->nd_repstat) { 1444191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1445191783Srmacklem return (0); 1446191783Srmacklem } 1447191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1448191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1449191783Srmacklem off = fxdr_unsigned(u_quad_t, *tl++); 1450191783Srmacklem } else { 1451191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1452191783Srmacklem off = fxdr_hyper(tl); 1453191783Srmacklem tl += 2; 1454191783Srmacklem verf = fxdr_hyper(tl); 1455191783Srmacklem tl += 2; 1456191783Srmacklem } 1457191783Srmacklem toff = off; 1458191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1459206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1460191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1461191783Srmacklem siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1462191783Srmacklem fullsiz = siz; 1463191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1464191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, 1465216693Srmacklem p, 1); 1466191783Srmacklem#if 0 1467191783Srmacklem /* 1468191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1469191783Srmacklem * since it is not supposed to change when entries are 1470191783Srmacklem * removed/added unless that offset cookies returned to 1471191783Srmacklem * the client are no longer valid. 1472191783Srmacklem */ 1473191783Srmacklem if (!nd->nd_repstat && toff && verf != at.na_filerev) 1474191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1475191783Srmacklem#endif 1476191783Srmacklem } 1477206170Srmacklem if (nd->nd_repstat == 0 && cnt == 0) { 1478206170Srmacklem if (nd->nd_flag & ND_NFSV2) 1479206170Srmacklem /* NFSv2 does not have NFSERR_TOOSMALL */ 1480206170Srmacklem nd->nd_repstat = EPERM; 1481206170Srmacklem else 1482206170Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1483206170Srmacklem } 1484191783Srmacklem if (!nd->nd_repstat) 1485200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1486191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1487200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1488191783Srmacklem if (nd->nd_repstat) { 1489191783Srmacklem vput(vp); 1490191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1491191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1492191783Srmacklem return (0); 1493191783Srmacklem } 1494216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1495191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1496191783Srmacklemagain: 1497191783Srmacklem eofflag = 0; 1498191783Srmacklem if (cookies) { 1499191783Srmacklem free((caddr_t)cookies, M_TEMP); 1500191783Srmacklem cookies = NULL; 1501191783Srmacklem } 1502191783Srmacklem 1503191783Srmacklem iv.iov_base = rbuf; 1504191783Srmacklem iv.iov_len = siz; 1505191783Srmacklem io.uio_iov = &iv; 1506191783Srmacklem io.uio_iovcnt = 1; 1507191783Srmacklem io.uio_offset = (off_t)off; 1508191783Srmacklem io.uio_resid = siz; 1509191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1510191783Srmacklem io.uio_rw = UIO_READ; 1511191783Srmacklem io.uio_td = NULL; 1512191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1513191783Srmacklem &cookies); 1514191783Srmacklem off = (u_int64_t)io.uio_offset; 1515191783Srmacklem if (io.uio_resid) 1516191783Srmacklem siz -= io.uio_resid; 1517191783Srmacklem 1518191783Srmacklem if (!cookies && !nd->nd_repstat) 1519191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1520191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1521216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1522191783Srmacklem if (!nd->nd_repstat) 1523191783Srmacklem nd->nd_repstat = getret; 1524191783Srmacklem } 1525191783Srmacklem 1526191783Srmacklem /* 1527191783Srmacklem * Handles the failed cases. nd->nd_repstat == 0 past here. 1528191783Srmacklem */ 1529191783Srmacklem if (nd->nd_repstat) { 1530216692Srmacklem vput(vp); 1531191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1532191783Srmacklem if (cookies) 1533191783Srmacklem free((caddr_t)cookies, M_TEMP); 1534191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1535191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1536191783Srmacklem return (0); 1537191783Srmacklem } 1538191783Srmacklem /* 1539191783Srmacklem * If nothing read, return eof 1540191783Srmacklem * rpc reply 1541191783Srmacklem */ 1542191783Srmacklem if (siz == 0) { 1543216692Srmacklem vput(vp); 1544191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1545191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1546191783Srmacklem } else { 1547191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1548191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1549191783Srmacklem txdr_hyper(at.na_filerev, tl); 1550191783Srmacklem tl += 2; 1551191783Srmacklem } 1552191783Srmacklem *tl++ = newnfs_false; 1553191783Srmacklem *tl = newnfs_true; 1554191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1555191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1556191783Srmacklem return (0); 1557191783Srmacklem } 1558191783Srmacklem 1559191783Srmacklem /* 1560191783Srmacklem * Check for degenerate cases of nothing useful read. 1561191783Srmacklem * If so go try again 1562191783Srmacklem */ 1563191783Srmacklem cpos = rbuf; 1564191783Srmacklem cend = rbuf + siz; 1565191783Srmacklem dp = (struct dirent *)cpos; 1566191783Srmacklem cookiep = cookies; 1567191783Srmacklem 1568191783Srmacklem /* 1569191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1570191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1571191783Srmacklem * skip over the records that precede the requested offset. This 1572191783Srmacklem * requires the assumption that file offset cookies monotonically 1573191783Srmacklem * increase. 1574216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1575216691Srmacklem * this is not done when ZFS is the file system. 1576191783Srmacklem */ 1577191783Srmacklem while (cpos < cend && ncookies > 0 && 1578191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1579216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff))) { 1580191783Srmacklem cpos += dp->d_reclen; 1581191783Srmacklem dp = (struct dirent *)cpos; 1582191783Srmacklem cookiep++; 1583191783Srmacklem ncookies--; 1584191783Srmacklem } 1585191783Srmacklem if (cpos >= cend || ncookies == 0) { 1586191783Srmacklem siz = fullsiz; 1587191783Srmacklem toff = off; 1588191783Srmacklem goto again; 1589191783Srmacklem } 1590216692Srmacklem vput(vp); 1591191783Srmacklem 1592191783Srmacklem /* 1593191783Srmacklem * dirlen is the size of the reply, including all XDR and must 1594191783Srmacklem * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 1595191783Srmacklem * if the XDR should be included in "count", but to be safe, we do. 1596191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now.) 1597191783Srmacklem */ 1598191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1599191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1600191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1601191783Srmacklem txdr_hyper(at.na_filerev, tl); 1602191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1603191783Srmacklem } else { 1604191783Srmacklem dirlen = 2 * NFSX_UNSIGNED; 1605191783Srmacklem } 1606191783Srmacklem 1607191783Srmacklem /* Loop through the records and build reply */ 1608191783Srmacklem while (cpos < cend && ncookies > 0) { 1609191783Srmacklem nlen = dp->d_namlen; 1610191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1611191783Srmacklem nlen <= NFS_MAXNAMLEN) { 1612191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1613191783Srmacklem dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1614191783Srmacklem else 1615191783Srmacklem dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1616191783Srmacklem if (dirlen > cnt) { 1617191783Srmacklem eofflag = 0; 1618191783Srmacklem break; 1619191783Srmacklem } 1620191783Srmacklem 1621191783Srmacklem /* 1622191783Srmacklem * Build the directory record xdr from 1623191783Srmacklem * the dirent entry. 1624191783Srmacklem */ 1625191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1626191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1627191783Srmacklem *tl++ = newnfs_true; 1628191783Srmacklem *tl++ = 0; 1629191783Srmacklem } else { 1630191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1631191783Srmacklem *tl++ = newnfs_true; 1632191783Srmacklem } 1633191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1634191783Srmacklem (void) nfsm_strtom(nd, dp->d_name, nlen); 1635191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1636191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1637191783Srmacklem *tl++ = 0; 1638191783Srmacklem } else 1639191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1640191783Srmacklem *tl = txdr_unsigned(*cookiep); 1641191783Srmacklem } 1642191783Srmacklem cpos += dp->d_reclen; 1643191783Srmacklem dp = (struct dirent *)cpos; 1644191783Srmacklem cookiep++; 1645191783Srmacklem ncookies--; 1646191783Srmacklem } 1647191783Srmacklem if (cpos < cend) 1648191783Srmacklem eofflag = 0; 1649191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1650191783Srmacklem *tl++ = newnfs_false; 1651191783Srmacklem if (eofflag) 1652191783Srmacklem *tl = newnfs_true; 1653191783Srmacklem else 1654191783Srmacklem *tl = newnfs_false; 1655191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1656191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1657191783Srmacklem return (0); 1658191783Srmacklemnfsmout: 1659191783Srmacklem vput(vp); 1660191783Srmacklem return (error); 1661191783Srmacklem} 1662191783Srmacklem 1663191783Srmacklem/* 1664191783Srmacklem * Readdirplus for V3 and Readdir for V4. 1665191783Srmacklem */ 1666191783Srmacklemint 1667191783Srmacklemnfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 1668191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1669191783Srmacklem{ 1670191783Srmacklem struct dirent *dp; 1671191783Srmacklem u_int32_t *tl; 1672191783Srmacklem int dirlen; 1673191783Srmacklem char *cpos, *cend, *rbuf; 1674191783Srmacklem struct vnode *nvp; 1675191783Srmacklem fhandle_t nfh; 1676191783Srmacklem struct nfsvattr nva, at, *nvap = &nva; 1677191783Srmacklem struct mbuf *mb0, *mb1; 1678191783Srmacklem struct nfsreferral *refp; 1679199715Srmacklem int nlen, r, error = 0, getret = 1, usevget = 1; 1680191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 1681191783Srmacklem caddr_t bpos0, bpos1; 1682191783Srmacklem u_int64_t off, toff, verf; 1683191783Srmacklem u_long *cookies = NULL, *cookiep; 1684191783Srmacklem nfsattrbit_t attrbits, rderrbits, savbits; 1685191783Srmacklem struct uio io; 1686191783Srmacklem struct iovec iv; 1687199715Srmacklem struct componentname cn; 1688216691Srmacklem int not_zfs; 1689191783Srmacklem 1690191783Srmacklem if (nd->nd_repstat) { 1691191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1692191783Srmacklem return (0); 1693191783Srmacklem } 1694191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 1695191783Srmacklem off = fxdr_hyper(tl); 1696191783Srmacklem toff = off; 1697191783Srmacklem tl += 2; 1698191783Srmacklem verf = fxdr_hyper(tl); 1699191783Srmacklem tl += 2; 1700191783Srmacklem siz = fxdr_unsigned(int, *tl++); 1701191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1702191783Srmacklem 1703191783Srmacklem /* 1704191783Srmacklem * Use the server's maximum data transfer size as the upper bound 1705191783Srmacklem * on reply datalen. 1706191783Srmacklem */ 1707206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1708191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1709191783Srmacklem 1710191783Srmacklem /* 1711191783Srmacklem * siz is a "hint" of how much directory information (name, fileid, 1712191783Srmacklem * cookie) should be in the reply. At least one client "hints" 0, 1713191783Srmacklem * so I set it to cnt for that case. I also round it up to the 1714191783Srmacklem * next multiple of DIRBLKSIZ. 1715191783Srmacklem */ 1716206170Srmacklem if (siz <= 0) 1717191783Srmacklem siz = cnt; 1718191783Srmacklem siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1719191783Srmacklem 1720191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1721191783Srmacklem error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1722191783Srmacklem if (error) 1723191783Srmacklem goto nfsmout; 1724191783Srmacklem NFSSET_ATTRBIT(&savbits, &attrbits); 1725191783Srmacklem NFSCLRNOTFILLABLE_ATTRBIT(&attrbits); 1726191783Srmacklem NFSZERO_ATTRBIT(&rderrbits); 1727191783Srmacklem NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 1728191783Srmacklem } else { 1729191783Srmacklem NFSZERO_ATTRBIT(&attrbits); 1730191783Srmacklem } 1731191783Srmacklem fullsiz = siz; 1732216693Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1733191783Srmacklem if (!nd->nd_repstat) { 1734191783Srmacklem if (off && verf != at.na_filerev) { 1735191783Srmacklem /* 1736191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1737191783Srmacklem * since it is not supposed to change when entries are 1738191783Srmacklem * removed/added unless that offset cookies returned to 1739191783Srmacklem * the client are no longer valid. 1740191783Srmacklem */ 1741191783Srmacklem#if 0 1742191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1743191783Srmacklem nd->nd_repstat = NFSERR_NOTSAME; 1744191783Srmacklem } else { 1745191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1746191783Srmacklem } 1747191783Srmacklem#endif 1748191783Srmacklem } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) { 1749191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1750191783Srmacklem } 1751191783Srmacklem } 1752191783Srmacklem if (!nd->nd_repstat && vp->v_type != VDIR) 1753191783Srmacklem nd->nd_repstat = NFSERR_NOTDIR; 1754191783Srmacklem if (!nd->nd_repstat && cnt == 0) 1755191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1756191783Srmacklem if (!nd->nd_repstat) 1757200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1758191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1759200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1760191783Srmacklem if (nd->nd_repstat) { 1761191783Srmacklem vput(vp); 1762191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1763191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1764191783Srmacklem return (0); 1765191783Srmacklem } 1766216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1767191783Srmacklem 1768191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1769191783Srmacklemagain: 1770191783Srmacklem eofflag = 0; 1771191783Srmacklem if (cookies) { 1772191783Srmacklem free((caddr_t)cookies, M_TEMP); 1773191783Srmacklem cookies = NULL; 1774191783Srmacklem } 1775191783Srmacklem 1776191783Srmacklem iv.iov_base = rbuf; 1777191783Srmacklem iv.iov_len = siz; 1778191783Srmacklem io.uio_iov = &iv; 1779191783Srmacklem io.uio_iovcnt = 1; 1780191783Srmacklem io.uio_offset = (off_t)off; 1781191783Srmacklem io.uio_resid = siz; 1782191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1783191783Srmacklem io.uio_rw = UIO_READ; 1784191783Srmacklem io.uio_td = NULL; 1785191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1786191783Srmacklem &cookies); 1787191783Srmacklem off = (u_int64_t)io.uio_offset; 1788191783Srmacklem if (io.uio_resid) 1789191783Srmacklem siz -= io.uio_resid; 1790191783Srmacklem 1791216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1792191783Srmacklem 1793191783Srmacklem if (!cookies && !nd->nd_repstat) 1794191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1795191783Srmacklem if (!nd->nd_repstat) 1796191783Srmacklem nd->nd_repstat = getret; 1797191783Srmacklem if (nd->nd_repstat) { 1798199715Srmacklem vput(vp); 1799191783Srmacklem if (cookies) 1800191783Srmacklem free((caddr_t)cookies, M_TEMP); 1801191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1802191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1803191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1804191783Srmacklem return (0); 1805191783Srmacklem } 1806191783Srmacklem /* 1807191783Srmacklem * If nothing read, return eof 1808191783Srmacklem * rpc reply 1809191783Srmacklem */ 1810191783Srmacklem if (siz == 0) { 1811199715Srmacklem vput(vp); 1812191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1813191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1814191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1815191783Srmacklem txdr_hyper(at.na_filerev, tl); 1816191783Srmacklem tl += 2; 1817191783Srmacklem *tl++ = newnfs_false; 1818191783Srmacklem *tl = newnfs_true; 1819191783Srmacklem free((caddr_t)cookies, M_TEMP); 1820191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1821191783Srmacklem return (0); 1822191783Srmacklem } 1823191783Srmacklem 1824191783Srmacklem /* 1825191783Srmacklem * Check for degenerate cases of nothing useful read. 1826191783Srmacklem * If so go try again 1827191783Srmacklem */ 1828191783Srmacklem cpos = rbuf; 1829191783Srmacklem cend = rbuf + siz; 1830191783Srmacklem dp = (struct dirent *)cpos; 1831191783Srmacklem cookiep = cookies; 1832191783Srmacklem 1833191783Srmacklem /* 1834191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1835191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1836191783Srmacklem * skip over the records that precede the requested offset. This 1837191783Srmacklem * requires the assumption that file offset cookies monotonically 1838191783Srmacklem * increase. 1839216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1840216691Srmacklem * this is not done when ZFS is the file system. 1841191783Srmacklem */ 1842191783Srmacklem while (cpos < cend && ncookies > 0 && 1843191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1844216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff) || 1845191783Srmacklem ((nd->nd_flag & ND_NFSV4) && 1846191783Srmacklem ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 1847191783Srmacklem (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 1848191783Srmacklem cpos += dp->d_reclen; 1849191783Srmacklem dp = (struct dirent *)cpos; 1850191783Srmacklem cookiep++; 1851191783Srmacklem ncookies--; 1852191783Srmacklem } 1853191783Srmacklem if (cpos >= cend || ncookies == 0) { 1854191783Srmacklem siz = fullsiz; 1855191783Srmacklem toff = off; 1856191783Srmacklem goto again; 1857191783Srmacklem } 1858216692Srmacklem VOP_UNLOCK(vp, 0); 1859191783Srmacklem 1860191783Srmacklem /* 1861191783Srmacklem * Save this position, in case there is an error before one entry 1862191783Srmacklem * is created. 1863191783Srmacklem */ 1864191783Srmacklem mb0 = nd->nd_mb; 1865191783Srmacklem bpos0 = nd->nd_bpos; 1866191783Srmacklem 1867191783Srmacklem /* 1868191783Srmacklem * Fill in the first part of the reply. 1869191783Srmacklem * dirlen is the reply length in bytes and cannot exceed cnt. 1870191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now, 1871191783Srmacklem * so we recognize when we have exceeded cnt.) 1872191783Srmacklem */ 1873191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1874191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1875191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1876191783Srmacklem } else { 1877191783Srmacklem dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 1878191783Srmacklem } 1879191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1880191783Srmacklem txdr_hyper(at.na_filerev, tl); 1881191783Srmacklem 1882191783Srmacklem /* 1883191783Srmacklem * Save this position, in case there is an empty reply needed. 1884191783Srmacklem */ 1885191783Srmacklem mb1 = nd->nd_mb; 1886191783Srmacklem bpos1 = nd->nd_bpos; 1887191783Srmacklem 1888191783Srmacklem /* Loop through the records and build reply */ 1889191783Srmacklem entrycnt = 0; 1890191783Srmacklem while (cpos < cend && ncookies > 0 && dirlen < cnt) { 1891191783Srmacklem nlen = dp->d_namlen; 1892191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1893191783Srmacklem nlen <= NFS_MAXNAMLEN && 1894191783Srmacklem ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 1895191783Srmacklem (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 1896191783Srmacklem || (nlen == 1 && dp->d_name[0] != '.'))) { 1897191783Srmacklem /* 1898191783Srmacklem * Save the current position in the reply, in case 1899191783Srmacklem * this entry exceeds cnt. 1900191783Srmacklem */ 1901191783Srmacklem mb1 = nd->nd_mb; 1902191783Srmacklem bpos1 = nd->nd_bpos; 1903191783Srmacklem 1904191783Srmacklem /* 1905191783Srmacklem * For readdir_and_lookup get the vnode using 1906191783Srmacklem * the file number. 1907191783Srmacklem */ 1908191783Srmacklem nvp = NULL; 1909191783Srmacklem refp = NULL; 1910191783Srmacklem r = 0; 1911191783Srmacklem if ((nd->nd_flag & ND_NFSV3) || 1912191783Srmacklem NFSNONZERO_ATTRBIT(&savbits)) { 1913191783Srmacklem if (nd->nd_flag & ND_NFSV4) 1914191783Srmacklem refp = nfsv4root_getreferral(NULL, 1915191783Srmacklem vp, dp->d_fileno); 1916199715Srmacklem if (refp == NULL) { 1917199715Srmacklem if (usevget) 1918199715Srmacklem r = VFS_VGET(vp->v_mount, 1919216700Srmacklem dp->d_fileno, LK_SHARED, 1920199715Srmacklem &nvp); 1921199715Srmacklem else 1922199715Srmacklem r = EOPNOTSUPP; 1923199715Srmacklem if (r == EOPNOTSUPP) { 1924199715Srmacklem if (usevget) { 1925199715Srmacklem usevget = 0; 1926199715Srmacklem cn.cn_nameiop = LOOKUP; 1927199715Srmacklem cn.cn_lkflags = 1928216700Srmacklem LK_SHARED | 1929199715Srmacklem LK_RETRY; 1930199715Srmacklem cn.cn_cred = 1931199715Srmacklem nd->nd_cred; 1932199715Srmacklem cn.cn_thread = p; 1933199715Srmacklem } 1934199715Srmacklem cn.cn_nameptr = dp->d_name; 1935199715Srmacklem cn.cn_namelen = nlen; 1936199715Srmacklem cn.cn_flags = ISLASTCN | 1937199715Srmacklem NOFOLLOW | LOCKLEAF | 1938199715Srmacklem MPSAFE; 1939199715Srmacklem if (nlen == 2 && 1940199715Srmacklem dp->d_name[0] == '.' && 1941199715Srmacklem dp->d_name[1] == '.') 1942199715Srmacklem cn.cn_flags |= 1943199715Srmacklem ISDOTDOT; 1944216700Srmacklem if (vn_lock(vp, LK_SHARED) 1945216692Srmacklem != 0) { 1946216692Srmacklem nd->nd_repstat = EPERM; 1947216692Srmacklem break; 1948216692Srmacklem } 1949214149Srmacklem if ((vp->v_vflag & VV_ROOT) != 0 1950214149Srmacklem && (cn.cn_flags & ISDOTDOT) 1951214149Srmacklem != 0) { 1952214149Srmacklem vref(vp); 1953214149Srmacklem nvp = vp; 1954214149Srmacklem r = 0; 1955214149Srmacklem } else 1956214149Srmacklem r = VOP_LOOKUP(vp, &nvp, 1957214149Srmacklem &cn); 1958199715Srmacklem } 1959199715Srmacklem } 1960191783Srmacklem if (!r) { 1961191783Srmacklem if (refp == NULL && 1962191783Srmacklem ((nd->nd_flag & ND_NFSV3) || 1963191783Srmacklem NFSNONZERO_ATTRBIT(&attrbits))) { 1964191783Srmacklem r = nfsvno_getfh(nvp, &nfh, p); 1965191783Srmacklem if (!r) 1966191783Srmacklem r = nfsvno_getattr(nvp, nvap, 1967216693Srmacklem nd->nd_cred, p, 1); 1968191783Srmacklem } 1969191783Srmacklem } else { 1970191783Srmacklem nvp = NULL; 1971191783Srmacklem } 1972191783Srmacklem if (r) { 1973191783Srmacklem if (!NFSISSET_ATTRBIT(&attrbits, 1974191783Srmacklem NFSATTRBIT_RDATTRERROR)) { 1975191783Srmacklem if (nvp != NULL) 1976191783Srmacklem vput(nvp); 1977191783Srmacklem nd->nd_repstat = r; 1978191783Srmacklem break; 1979191783Srmacklem } 1980191783Srmacklem } 1981191783Srmacklem } 1982191783Srmacklem 1983191783Srmacklem /* 1984191783Srmacklem * Build the directory record xdr 1985191783Srmacklem */ 1986191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1987191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1988191783Srmacklem *tl++ = newnfs_true; 1989191783Srmacklem *tl++ = 0; 1990191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1991191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 1992191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1993191783Srmacklem *tl++ = 0; 1994191783Srmacklem *tl = txdr_unsigned(*cookiep); 1995191783Srmacklem nfsrv_postopattr(nd, 0, nvap); 1996191783Srmacklem dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1); 1997191783Srmacklem dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 1998191783Srmacklem if (nvp != NULL) 1999191783Srmacklem vput(nvp); 2000191783Srmacklem } else { 2001191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2002191783Srmacklem *tl++ = newnfs_true; 2003191783Srmacklem *tl++ = 0; 2004191783Srmacklem *tl = txdr_unsigned(*cookiep); 2005191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2006191783Srmacklem if (nvp != NULL) 2007216692Srmacklem VOP_UNLOCK(nvp, 0); 2008191783Srmacklem if (refp != NULL) { 2009191783Srmacklem dirlen += nfsrv_putreferralattr(nd, 2010191783Srmacklem &savbits, refp, 0, 2011191783Srmacklem &nd->nd_repstat); 2012191783Srmacklem if (nd->nd_repstat) { 2013191783Srmacklem if (nvp != NULL) 2014191783Srmacklem vrele(nvp); 2015191783Srmacklem break; 2016191783Srmacklem } 2017191783Srmacklem } else if (r) { 2018191783Srmacklem dirlen += nfsvno_fillattr(nd, nvp, nvap, 2019191783Srmacklem &nfh, r, &rderrbits, nd->nd_cred, 2020191783Srmacklem p, isdgram, 0); 2021191783Srmacklem } else { 2022191783Srmacklem dirlen += nfsvno_fillattr(nd, nvp, nvap, 2023191783Srmacklem &nfh, r, &attrbits, nd->nd_cred, 2024191783Srmacklem p, isdgram, 0); 2025191783Srmacklem } 2026191783Srmacklem if (nvp != NULL) 2027191783Srmacklem vrele(nvp); 2028191783Srmacklem dirlen += (3 * NFSX_UNSIGNED); 2029191783Srmacklem } 2030191783Srmacklem if (dirlen <= cnt) 2031191783Srmacklem entrycnt++; 2032191783Srmacklem } 2033191783Srmacklem cpos += dp->d_reclen; 2034191783Srmacklem dp = (struct dirent *)cpos; 2035191783Srmacklem cookiep++; 2036191783Srmacklem ncookies--; 2037191783Srmacklem } 2038216692Srmacklem vrele(vp); 2039191783Srmacklem 2040191783Srmacklem /* 2041191783Srmacklem * If dirlen > cnt, we must strip off the last entry. If that 2042191783Srmacklem * results in an empty reply, report NFSERR_TOOSMALL. 2043191783Srmacklem */ 2044191783Srmacklem if (dirlen > cnt || nd->nd_repstat) { 2045191783Srmacklem if (!nd->nd_repstat && entrycnt == 0) 2046191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 2047191783Srmacklem if (nd->nd_repstat) 2048191783Srmacklem newnfs_trimtrailing(nd, mb0, bpos0); 2049191783Srmacklem else 2050191783Srmacklem newnfs_trimtrailing(nd, mb1, bpos1); 2051191783Srmacklem eofflag = 0; 2052191783Srmacklem } else if (cpos < cend) 2053191783Srmacklem eofflag = 0; 2054191783Srmacklem if (!nd->nd_repstat) { 2055191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2056191783Srmacklem *tl++ = newnfs_false; 2057191783Srmacklem if (eofflag) 2058191783Srmacklem *tl = newnfs_true; 2059191783Srmacklem else 2060191783Srmacklem *tl = newnfs_false; 2061191783Srmacklem } 2062191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 2063191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 2064191783Srmacklem return (0); 2065191783Srmacklemnfsmout: 2066191783Srmacklem vput(vp); 2067191783Srmacklem return (error); 2068191783Srmacklem} 2069191783Srmacklem 2070191783Srmacklem/* 2071191783Srmacklem * Get the settable attributes out of the mbuf list. 2072191783Srmacklem * (Return 0 or EBADRPC) 2073191783Srmacklem */ 2074191783Srmacklemint 2075191783Srmacklemnfsrv_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2076191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2077191783Srmacklem{ 2078191783Srmacklem u_int32_t *tl; 2079191783Srmacklem struct nfsv2_sattr *sp; 2080191783Srmacklem struct timeval curtime; 2081191783Srmacklem int error = 0, toclient = 0; 2082191783Srmacklem 2083191783Srmacklem switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 2084191783Srmacklem case ND_NFSV2: 2085191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2086191783Srmacklem /* 2087191783Srmacklem * Some old clients didn't fill in the high order 16bits. 2088191783Srmacklem * --> check the low order 2 bytes for 0xffff 2089191783Srmacklem */ 2090191783Srmacklem if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 2091191783Srmacklem nvap->na_mode = nfstov_mode(sp->sa_mode); 2092191783Srmacklem if (sp->sa_uid != newnfs_xdrneg1) 2093191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 2094191783Srmacklem if (sp->sa_gid != newnfs_xdrneg1) 2095191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 2096191783Srmacklem if (sp->sa_size != newnfs_xdrneg1) 2097191783Srmacklem nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 2098191783Srmacklem if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 2099191783Srmacklem#ifdef notyet 2100191783Srmacklem fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 2101191783Srmacklem#else 2102191783Srmacklem nvap->na_atime.tv_sec = 2103191783Srmacklem fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 2104191783Srmacklem nvap->na_atime.tv_nsec = 0; 2105191783Srmacklem#endif 2106191783Srmacklem } 2107191783Srmacklem if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 2108191783Srmacklem fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 2109191783Srmacklem break; 2110191783Srmacklem case ND_NFSV3: 2111191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2112191783Srmacklem if (*tl == newnfs_true) { 2113191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2114191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2115191783Srmacklem } 2116191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2117191783Srmacklem if (*tl == newnfs_true) { 2118191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2119191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, *tl); 2120191783Srmacklem } 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_gid = fxdr_unsigned(gid_t, *tl); 2125191783Srmacklem } 2126191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2127191783Srmacklem if (*tl == newnfs_true) { 2128191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2129191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2130191783Srmacklem } 2131191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2132191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2133191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2134191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2135191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_atime); 2136191783Srmacklem toclient = 1; 2137191783Srmacklem break; 2138191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2139191783Srmacklem NFSGETTIME(&curtime); 2140191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2141191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2142191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2143191783Srmacklem break; 2144191783Srmacklem }; 2145191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2146191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2147191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2148191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2149191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_mtime); 2150191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2151191783Srmacklem break; 2152191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2153191783Srmacklem NFSGETTIME(&curtime); 2154191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2155191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2156191783Srmacklem if (!toclient) 2157191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2158191783Srmacklem break; 2159191783Srmacklem }; 2160191783Srmacklem break; 2161191783Srmacklem case ND_NFSV4: 2162191783Srmacklem error = nfsv4_sattr(nd, nvap, attrbitp, aclp, p); 2163191783Srmacklem }; 2164191783Srmacklemnfsmout: 2165191783Srmacklem return (error); 2166191783Srmacklem} 2167191783Srmacklem 2168191783Srmacklem/* 2169191783Srmacklem * Handle the setable attributes for V4. 2170191783Srmacklem * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 2171191783Srmacklem */ 2172191783Srmacklemint 2173191783Srmacklemnfsv4_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2174191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2175191783Srmacklem{ 2176191783Srmacklem u_int32_t *tl; 2177191783Srmacklem int attrsum = 0; 2178191783Srmacklem int i, j; 2179191783Srmacklem int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 2180191783Srmacklem int toclient = 0; 2181191783Srmacklem u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 2182191783Srmacklem uid_t uid; 2183191783Srmacklem gid_t gid; 2184191783Srmacklem struct timeval curtime; 2185191783Srmacklem 2186191783Srmacklem error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 2187191783Srmacklem if (error) 2188191783Srmacklem return (error); 2189191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2190191783Srmacklem attrsize = fxdr_unsigned(int, *tl); 2191191783Srmacklem 2192191783Srmacklem /* 2193191783Srmacklem * Loop around getting the setable attributes. If an unsupported 2194191783Srmacklem * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 2195191783Srmacklem */ 2196191783Srmacklem if (retnotsup) { 2197191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2198191783Srmacklem bitpos = NFSATTRBIT_MAX; 2199191783Srmacklem } else { 2200191783Srmacklem bitpos = 0; 2201191783Srmacklem } 2202191783Srmacklem for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 2203191783Srmacklem if (attrsum > attrsize) { 2204191783Srmacklem error = NFSERR_BADXDR; 2205191783Srmacklem goto nfsmout; 2206191783Srmacklem } 2207191783Srmacklem if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 2208191783Srmacklem switch (bitpos) { 2209191783Srmacklem case NFSATTRBIT_SIZE: 2210191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2211191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2212191783Srmacklem attrsum += NFSX_HYPER; 2213191783Srmacklem break; 2214191783Srmacklem case NFSATTRBIT_ACL: 2215191783Srmacklem error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize, 2216191783Srmacklem p); 2217191783Srmacklem if (error) 2218191783Srmacklem goto nfsmout; 2219191783Srmacklem if (aceerr && !nd->nd_repstat) 2220191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2221191783Srmacklem attrsum += aclsize; 2222191783Srmacklem break; 2223191783Srmacklem case NFSATTRBIT_ARCHIVE: 2224191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2225191783Srmacklem if (!nd->nd_repstat) 2226191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2227191783Srmacklem attrsum += NFSX_UNSIGNED; 2228191783Srmacklem break; 2229191783Srmacklem case NFSATTRBIT_HIDDEN: 2230191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2231191783Srmacklem if (!nd->nd_repstat) 2232191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2233191783Srmacklem attrsum += NFSX_UNSIGNED; 2234191783Srmacklem break; 2235191783Srmacklem case NFSATTRBIT_MIMETYPE: 2236191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2237191783Srmacklem i = fxdr_unsigned(int, *tl); 2238191783Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 2239191783Srmacklem if (error) 2240191783Srmacklem goto nfsmout; 2241191783Srmacklem if (!nd->nd_repstat) 2242191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2243191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 2244191783Srmacklem break; 2245191783Srmacklem case NFSATTRBIT_MODE: 2246191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2247191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2248191783Srmacklem attrsum += NFSX_UNSIGNED; 2249191783Srmacklem break; 2250191783Srmacklem case NFSATTRBIT_OWNER: 2251191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2252191783Srmacklem j = fxdr_unsigned(int, *tl); 2253191783Srmacklem if (j < 0) 2254191783Srmacklem return (NFSERR_BADXDR); 2255191783Srmacklem if (j > NFSV4_SMALLSTR) 2256191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2257191783Srmacklem else 2258191783Srmacklem cp = namestr; 2259191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2260191783Srmacklem if (error) { 2261191783Srmacklem if (j > NFSV4_SMALLSTR) 2262191783Srmacklem free(cp, M_NFSSTRING); 2263191783Srmacklem return (error); 2264191783Srmacklem } 2265191783Srmacklem if (!nd->nd_repstat) { 2266191783Srmacklem nd->nd_repstat = nfsv4_strtouid(cp,j,&uid,p); 2267191783Srmacklem if (!nd->nd_repstat) 2268191783Srmacklem nvap->na_uid = uid; 2269191783Srmacklem } 2270191783Srmacklem if (j > NFSV4_SMALLSTR) 2271191783Srmacklem free(cp, M_NFSSTRING); 2272191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2273191783Srmacklem break; 2274191783Srmacklem case NFSATTRBIT_OWNERGROUP: 2275191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2276191783Srmacklem j = fxdr_unsigned(int, *tl); 2277191783Srmacklem if (j < 0) 2278191783Srmacklem return (NFSERR_BADXDR); 2279191783Srmacklem if (j > NFSV4_SMALLSTR) 2280191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2281191783Srmacklem else 2282191783Srmacklem cp = namestr; 2283191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2284191783Srmacklem if (error) { 2285191783Srmacklem if (j > NFSV4_SMALLSTR) 2286191783Srmacklem free(cp, M_NFSSTRING); 2287191783Srmacklem return (error); 2288191783Srmacklem } 2289191783Srmacklem if (!nd->nd_repstat) { 2290191783Srmacklem nd->nd_repstat = nfsv4_strtogid(cp,j,&gid,p); 2291191783Srmacklem if (!nd->nd_repstat) 2292191783Srmacklem nvap->na_gid = gid; 2293191783Srmacklem } 2294191783Srmacklem if (j > NFSV4_SMALLSTR) 2295191783Srmacklem free(cp, M_NFSSTRING); 2296191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2297191783Srmacklem break; 2298191783Srmacklem case NFSATTRBIT_SYSTEM: 2299191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2300191783Srmacklem if (!nd->nd_repstat) 2301191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2302191783Srmacklem attrsum += NFSX_UNSIGNED; 2303191783Srmacklem break; 2304191783Srmacklem case NFSATTRBIT_TIMEACCESSSET: 2305191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2306191783Srmacklem attrsum += NFSX_UNSIGNED; 2307191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2308191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2309191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_atime); 2310191783Srmacklem toclient = 1; 2311191783Srmacklem attrsum += NFSX_V4TIME; 2312191783Srmacklem } else { 2313191783Srmacklem NFSGETTIME(&curtime); 2314191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2315191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2316191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2317191783Srmacklem } 2318191783Srmacklem break; 2319191783Srmacklem case NFSATTRBIT_TIMEBACKUP: 2320191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2321191783Srmacklem if (!nd->nd_repstat) 2322191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2323191783Srmacklem attrsum += NFSX_V4TIME; 2324191783Srmacklem break; 2325191783Srmacklem case NFSATTRBIT_TIMECREATE: 2326191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2327191783Srmacklem if (!nd->nd_repstat) 2328191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2329191783Srmacklem attrsum += NFSX_V4TIME; 2330191783Srmacklem break; 2331191783Srmacklem case NFSATTRBIT_TIMEMODIFYSET: 2332191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2333191783Srmacklem attrsum += NFSX_UNSIGNED; 2334191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2335191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2336191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_mtime); 2337191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2338191783Srmacklem attrsum += NFSX_V4TIME; 2339191783Srmacklem } else { 2340191783Srmacklem NFSGETTIME(&curtime); 2341191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2342191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2343191783Srmacklem if (!toclient) 2344191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2345191783Srmacklem } 2346191783Srmacklem break; 2347191783Srmacklem default: 2348191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2349191783Srmacklem /* 2350191783Srmacklem * set bitpos so we drop out of the loop. 2351191783Srmacklem */ 2352191783Srmacklem bitpos = NFSATTRBIT_MAX; 2353191783Srmacklem break; 2354191783Srmacklem }; 2355191783Srmacklem } 2356191783Srmacklem 2357191783Srmacklem /* 2358191783Srmacklem * some clients pad the attrlist, so we need to skip over the 2359191783Srmacklem * padding. 2360191783Srmacklem */ 2361191783Srmacklem if (attrsum > attrsize) { 2362191783Srmacklem error = NFSERR_BADXDR; 2363191783Srmacklem } else { 2364191783Srmacklem attrsize = NFSM_RNDUP(attrsize); 2365191783Srmacklem if (attrsum < attrsize) 2366191783Srmacklem error = nfsm_advance(nd, attrsize - attrsum, -1); 2367191783Srmacklem } 2368191783Srmacklemnfsmout: 2369191783Srmacklem return (error); 2370191783Srmacklem} 2371191783Srmacklem 2372191783Srmacklem/* 2373191783Srmacklem * Check/setup export credentials. 2374191783Srmacklem */ 2375191783Srmacklemint 2376191783Srmacklemnfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 2377191783Srmacklem struct ucred *credanon) 2378191783Srmacklem{ 2379191783Srmacklem int error = 0; 2380191783Srmacklem 2381191783Srmacklem /* 2382191783Srmacklem * Check/setup credentials. 2383191783Srmacklem */ 2384191783Srmacklem if (nd->nd_flag & ND_GSS) 2385192121Srmacklem exp->nes_exflag &= ~MNT_EXPORTANON; 2386191783Srmacklem 2387191783Srmacklem /* 2388192121Srmacklem * Check to see if the operation is allowed for this security flavor. 2389191783Srmacklem * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to 2390191783Srmacklem * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 2391192121Srmacklem * Also, allow Secinfo, so that it can acquire the correct flavor(s). 2392191783Srmacklem */ 2393192121Srmacklem if (nfsvno_testexp(nd, exp) && 2394192121Srmacklem nd->nd_procnum != NFSV4OP_SECINFO && 2395191783Srmacklem nd->nd_procnum != NFSPROC_FSINFO) { 2396191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2397191783Srmacklem error = NFSERR_WRONGSEC; 2398191783Srmacklem else 2399191783Srmacklem error = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2400191783Srmacklem return (error); 2401191783Srmacklem } 2402191783Srmacklem 2403191783Srmacklem /* 2404191783Srmacklem * Check to see if the file system is exported V4 only. 2405191783Srmacklem */ 2406191783Srmacklem if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) 2407191783Srmacklem return (NFSERR_PROGNOTV4); 2408191783Srmacklem 2409191783Srmacklem /* 2410191783Srmacklem * Now, map the user credentials. 2411191783Srmacklem * (Note that ND_AUTHNONE will only be set for an NFSv3 2412191783Srmacklem * Fsinfo RPC. If set for anything else, this code might need 2413191783Srmacklem * to change.) 2414191783Srmacklem */ 2415191783Srmacklem if (NFSVNO_EXPORTED(exp) && 2416191783Srmacklem ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) || 2417191783Srmacklem NFSVNO_EXPORTANON(exp) || 2418191783Srmacklem (nd->nd_flag & ND_AUTHNONE))) { 2419191783Srmacklem nd->nd_cred->cr_uid = credanon->cr_uid; 2420191783Srmacklem nd->nd_cred->cr_gid = credanon->cr_gid; 2421194498Sbrooks crsetgroups(nd->nd_cred, credanon->cr_ngroups, 2422194498Sbrooks credanon->cr_groups); 2423191783Srmacklem } 2424191783Srmacklem return (0); 2425191783Srmacklem} 2426191783Srmacklem 2427191783Srmacklem/* 2428191783Srmacklem * Check exports. 2429191783Srmacklem */ 2430191783Srmacklemint 2431191783Srmacklemnfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 2432191783Srmacklem struct ucred **credp) 2433191783Srmacklem{ 2434192121Srmacklem int i, error, *secflavors; 2435191783Srmacklem 2436191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2437192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2438192121Srmacklem if (error) { 2439192121Srmacklem if (nfs_rootfhset) { 2440192121Srmacklem exp->nes_exflag = 0; 2441192121Srmacklem exp->nes_numsecflavor = 0; 2442192121Srmacklem error = 0; 2443192121Srmacklem } 2444192121Srmacklem } else { 2445192121Srmacklem /* Copy the security flavors. */ 2446192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2447192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2448191783Srmacklem } 2449191783Srmacklem return (error); 2450191783Srmacklem} 2451191783Srmacklem 2452191783Srmacklem/* 2453191783Srmacklem * Get a vnode for a file handle and export stuff. 2454191783Srmacklem */ 2455191783Srmacklemint 2456191783Srmacklemnfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 2457216700Srmacklem int lktype, struct vnode **vpp, struct nfsexstuff *exp, 2458216700Srmacklem struct ucred **credp) 2459191783Srmacklem{ 2460192121Srmacklem int i, error, *secflavors; 2461191783Srmacklem 2462191998Srmacklem *credp = NULL; 2463192121Srmacklem exp->nes_numsecflavor = 0; 2464191783Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp); 2465205663Srmacklem if (error != 0) 2466205663Srmacklem /* Make sure the server replies ESTALE to the client. */ 2467205663Srmacklem error = ESTALE; 2468191783Srmacklem if (nam && !error) { 2469191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2470192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2471191783Srmacklem if (error) { 2472191783Srmacklem if (nfs_rootfhset) { 2473191783Srmacklem exp->nes_exflag = 0; 2474192121Srmacklem exp->nes_numsecflavor = 0; 2475191783Srmacklem error = 0; 2476191783Srmacklem } else { 2477191783Srmacklem vput(*vpp); 2478191783Srmacklem } 2479192121Srmacklem } else { 2480192121Srmacklem /* Copy the security flavors. */ 2481192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2482192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2483191783Srmacklem } 2484191783Srmacklem } 2485216700Srmacklem if (error == 0 && lktype == LK_SHARED) 2486216700Srmacklem /* 2487216700Srmacklem * It would be much better to pass lktype to VFS_FHTOVP(), 2488216700Srmacklem * but this will have to do until VFS_FHTOVP() has a lock 2489216700Srmacklem * type argument like VFS_VGET(). 2490216700Srmacklem */ 2491216700Srmacklem vn_lock(*vpp, LK_DOWNGRADE | LK_RETRY); 2492191783Srmacklem return (error); 2493191783Srmacklem} 2494191783Srmacklem 2495191783Srmacklem/* 2496191783Srmacklem * Do the pathconf vnode op. 2497191783Srmacklem */ 2498191783Srmacklemint 2499191783Srmacklemnfsvno_pathconf(struct vnode *vp, int flag, register_t *retf, 2500191783Srmacklem struct ucred *cred, struct thread *p) 2501191783Srmacklem{ 2502191783Srmacklem int error; 2503191783Srmacklem 2504191783Srmacklem error = VOP_PATHCONF(vp, flag, retf); 2505191783Srmacklem return (error); 2506191783Srmacklem} 2507191783Srmacklem 2508191783Srmacklem/* 2509191783Srmacklem * nfsd_fhtovp() - convert a fh to a vnode ptr 2510191783Srmacklem * - look up fsid in mount list (if not found ret error) 2511191783Srmacklem * - get vp and export rights by calling nfsvno_fhtovp() 2512191783Srmacklem * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2513191783Srmacklem * for AUTH_SYS 2514191783Srmacklem * Also handle getting the Giant lock for the file system, 2515191783Srmacklem * as required: 2516191783Srmacklem * - if same mount point as *mpp 2517191783Srmacklem * do nothing 2518191783Srmacklem * else if *mpp == NULL 2519191783Srmacklem * if already locked 2520191783Srmacklem * leave it locked 2521191783Srmacklem * else 2522191783Srmacklem * call VFS_LOCK_GIANT() 2523191783Srmacklem * else 2524191783Srmacklem * if already locked 2525191783Srmacklem * unlock Giant 2526191783Srmacklem * call VFS_LOCK_GIANT() 2527191783Srmacklem */ 2528191783Srmacklemvoid 2529216700Srmacklemnfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype, 2530191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, 2531191783Srmacklem struct mount **mpp, int startwrite, struct thread *p) 2532191783Srmacklem{ 2533191783Srmacklem struct mount *mp; 2534191783Srmacklem struct ucred *credanon; 2535191783Srmacklem fhandle_t *fhp; 2536191783Srmacklem 2537191783Srmacklem fhp = (fhandle_t *)nfp->nfsrvfh_data; 2538191783Srmacklem /* 2539191783Srmacklem * Check for the special case of the nfsv4root_fh. 2540191783Srmacklem */ 2541191783Srmacklem mp = vfs_getvfs(&fhp->fh_fsid); 2542191783Srmacklem if (!mp) { 2543191783Srmacklem *vpp = NULL; 2544191783Srmacklem nd->nd_repstat = ESTALE; 2545191783Srmacklem if (*mpp && exp->nes_vfslocked) 2546191783Srmacklem VFS_UNLOCK_GIANT(*mpp); 2547191783Srmacklem *mpp = NULL; 2548191783Srmacklem exp->nes_vfslocked = 0; 2549191783Srmacklem return; 2550191783Srmacklem } 2551191783Srmacklem 2552191783Srmacklem /* 2553191783Srmacklem * Now, handle Giant for the file system. 2554191783Srmacklem */ 2555191783Srmacklem if (*mpp != NULL && *mpp != mp && exp->nes_vfslocked) { 2556191783Srmacklem VFS_UNLOCK_GIANT(*mpp); 2557191783Srmacklem exp->nes_vfslocked = 0; 2558191783Srmacklem } 2559191783Srmacklem if (!exp->nes_vfslocked && *mpp != mp) 2560191783Srmacklem exp->nes_vfslocked = VFS_LOCK_GIANT(mp); 2561191783Srmacklem 2562191783Srmacklem *mpp = mp; 2563191783Srmacklem if (startwrite) 2564191783Srmacklem vn_start_write(NULL, mpp, V_WAIT); 2565191783Srmacklem 2566216700Srmacklem nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp, 2567191783Srmacklem &credanon); 2568191783Srmacklem 2569191783Srmacklem /* 2570191783Srmacklem * For NFSv4 without a pseudo root fs, unexported file handles 2571191783Srmacklem * can be returned, so that Lookup works everywhere. 2572191783Srmacklem */ 2573191783Srmacklem if (!nd->nd_repstat && exp->nes_exflag == 0 && 2574191783Srmacklem !(nd->nd_flag & ND_NFSV4)) { 2575191783Srmacklem vput(*vpp); 2576191783Srmacklem nd->nd_repstat = EACCES; 2577191783Srmacklem } 2578191783Srmacklem 2579191783Srmacklem /* 2580191783Srmacklem * Personally, I've never seen any point in requiring a 2581191783Srmacklem * reserved port#, since only in the rare case where the 2582191783Srmacklem * clients are all boxes with secure system priviledges, 2583191783Srmacklem * does it provide any enhanced security, but... some people 2584191783Srmacklem * believe it to be useful and keep putting this code back in. 2585191783Srmacklem * (There is also some "security checker" out there that 2586191783Srmacklem * complains if the nfs server doesn't enforce this.) 2587191783Srmacklem * However, note the following: 2588191783Srmacklem * RFC3530 (NFSv4) specifies that a reserved port# not be 2589191783Srmacklem * required. 2590191783Srmacklem * RFC2623 recommends that, if a reserved port# is checked for, 2591191783Srmacklem * that there be a way to turn that off--> ifdef'd. 2592191783Srmacklem */ 2593191783Srmacklem#ifdef NFS_REQRSVPORT 2594191783Srmacklem if (!nd->nd_repstat) { 2595192121Srmacklem struct sockaddr_in *saddr; 2596192121Srmacklem struct sockaddr_in6 *saddr6; 2597192121Srmacklem 2598192121Srmacklem saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 2599192121Srmacklem saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 2600192121Srmacklem if (!(nd->nd_flag & ND_NFSV4) && 2601192121Srmacklem ((saddr->sin_family == AF_INET && 2602192121Srmacklem ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 2603192121Srmacklem (saddr6->sin6_family == AF_INET6 && 2604192121Srmacklem ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 2605192121Srmacklem vput(*vpp); 2606192121Srmacklem nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2607192121Srmacklem } 2608191783Srmacklem } 2609191783Srmacklem#endif /* NFS_REQRSVPORT */ 2610191783Srmacklem 2611191783Srmacklem /* 2612191783Srmacklem * Check/setup credentials. 2613191783Srmacklem */ 2614191783Srmacklem if (!nd->nd_repstat) { 2615191783Srmacklem nd->nd_saveduid = nd->nd_cred->cr_uid; 2616191783Srmacklem nd->nd_repstat = nfsd_excred(nd, exp, credanon); 2617191783Srmacklem if (nd->nd_repstat) 2618191783Srmacklem vput(*vpp); 2619191783Srmacklem } 2620191940Skan if (credanon != NULL) 2621191940Skan crfree(credanon); 2622191783Srmacklem if (nd->nd_repstat) { 2623191783Srmacklem if (startwrite) 2624191783Srmacklem vn_finished_write(mp); 2625191783Srmacklem if (exp->nes_vfslocked) { 2626191783Srmacklem VFS_UNLOCK_GIANT(mp); 2627191783Srmacklem exp->nes_vfslocked = 0; 2628191783Srmacklem } 2629191783Srmacklem vfs_rel(mp); 2630191783Srmacklem *vpp = NULL; 2631191783Srmacklem *mpp = NULL; 2632191783Srmacklem } else { 2633191783Srmacklem vfs_rel(mp); 2634191783Srmacklem } 2635191783Srmacklem} 2636191783Srmacklem 2637191783Srmacklem/* 2638191783Srmacklem * glue for fp. 2639191783Srmacklem */ 2640191783Srmacklemint 2641191783Srmacklemfp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 2642191783Srmacklem{ 2643191783Srmacklem struct filedesc *fdp; 2644191783Srmacklem struct file *fp; 2645191783Srmacklem 2646191783Srmacklem fdp = p->td_proc->p_fd; 2647191783Srmacklem if (fd >= fdp->fd_nfiles || 2648191783Srmacklem (fp = fdp->fd_ofiles[fd]) == NULL) 2649191783Srmacklem return (EBADF); 2650191783Srmacklem *fpp = fp; 2651191783Srmacklem return (0); 2652191783Srmacklem} 2653191783Srmacklem 2654191783Srmacklem/* 2655192121Srmacklem * Called from nfssvc() to update the exports list. Just call 2656191783Srmacklem * vfs_export(). This has to be done, since the v4 root fake fs isn't 2657191783Srmacklem * in the mount list. 2658191783Srmacklem */ 2659191783Srmacklemint 2660191783Srmacklemnfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 2661191783Srmacklem{ 2662191783Srmacklem struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 2663191783Srmacklem int error; 2664191783Srmacklem struct nameidata nd; 2665191783Srmacklem fhandle_t fh; 2666191783Srmacklem 2667191783Srmacklem error = vfs_export(&nfsv4root_mnt, &nfsexargp->export); 2668191783Srmacklem if ((nfsexargp->export.ex_flags & MNT_DELEXPORT)) { 2669191783Srmacklem nfs_rootfhset = 0; 2670191783Srmacklem nfsv4root_set = 0; 2671191783Srmacklem } else if (error == 0) { 2672191783Srmacklem if (nfsexargp->fspec == NULL) 2673191783Srmacklem return (EPERM); 2674191783Srmacklem /* 2675191783Srmacklem * If fspec != NULL, this is the v4root path. 2676191783Srmacklem */ 2677191783Srmacklem NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_USERSPACE, 2678191783Srmacklem nfsexargp->fspec, p); 2679191783Srmacklem if ((error = namei(&nd)) != 0) 2680191783Srmacklem return (error); 2681191783Srmacklem error = nfsvno_getfh(nd.ni_vp, &fh, p); 2682191783Srmacklem vrele(nd.ni_vp); 2683191783Srmacklem if (!error) { 2684191783Srmacklem nfs_rootfh.nfsrvfh_len = NFSX_MYFH; 2685191783Srmacklem NFSBCOPY((caddr_t)&fh, 2686191783Srmacklem nfs_rootfh.nfsrvfh_data, 2687191783Srmacklem sizeof (fhandle_t)); 2688191783Srmacklem nfs_rootfhset = 1; 2689191783Srmacklem } 2690191783Srmacklem } 2691191783Srmacklem return (error); 2692191783Srmacklem} 2693191783Srmacklem 2694191783Srmacklem/* 2695191783Srmacklem * Get the tcp socket sequence numbers we need. 2696191783Srmacklem * (Maybe this should be moved to the tcp sources?) 2697191783Srmacklem */ 2698191783Srmacklemint 2699191783Srmacklemnfsrv_getsocksndseq(struct socket *so, tcp_seq *maxp, tcp_seq *unap) 2700191783Srmacklem{ 2701191783Srmacklem struct inpcb *inp; 2702191783Srmacklem struct tcpcb *tp; 2703191783Srmacklem 2704191783Srmacklem inp = sotoinpcb(so); 2705205010Srwatson KASSERT(inp != NULL, ("nfsrv_getsocksndseq: inp == NULL")); 2706205010Srwatson INP_RLOCK(inp); 2707205010Srwatson if (inp->inp_flags & (INP_TIMEWAIT | INP_DROPPED)) { 2708205010Srwatson INP_RUNLOCK(inp); 2709205010Srwatson return (EPIPE); 2710191783Srmacklem } 2711191783Srmacklem tp = intotcpcb(inp); 2712205010Srwatson if (tp->t_state != TCPS_ESTABLISHED) { 2713205010Srwatson INP_RUNLOCK(inp); 2714205010Srwatson return (EPIPE); 2715191783Srmacklem } 2716205010Srwatson *maxp = tp->snd_max; 2717205010Srwatson *unap = tp->snd_una; 2718191783Srmacklem INP_RUNLOCK(inp); 2719205010Srwatson return (0); 2720191783Srmacklem} 2721191783Srmacklem 2722191783Srmacklem/* 2723191783Srmacklem * This function needs to test to see if the system is near its limit 2724191783Srmacklem * for memory allocation via malloc() or mget() and return True iff 2725191783Srmacklem * either of these resources are near their limit. 2726191783Srmacklem * XXX (For now, this is just a stub.) 2727191783Srmacklem */ 2728191783Srmacklemint nfsrv_testmalloclimit = 0; 2729191783Srmacklemint 2730191783Srmacklemnfsrv_mallocmget_limit(void) 2731191783Srmacklem{ 2732191783Srmacklem static int printmesg = 0; 2733191783Srmacklem static int testval = 1; 2734191783Srmacklem 2735191783Srmacklem if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 2736191783Srmacklem if ((printmesg++ % 100) == 0) 2737191783Srmacklem printf("nfsd: malloc/mget near limit\n"); 2738191783Srmacklem return (1); 2739191783Srmacklem } 2740191783Srmacklem return (0); 2741191783Srmacklem} 2742191783Srmacklem 2743191783Srmacklem/* 2744191783Srmacklem * BSD specific initialization of a mount point. 2745191783Srmacklem */ 2746191783Srmacklemvoid 2747191783Srmacklemnfsd_mntinit(void) 2748191783Srmacklem{ 2749191783Srmacklem static int inited = 0; 2750191783Srmacklem 2751191783Srmacklem if (inited) 2752191783Srmacklem return; 2753191783Srmacklem inited = 1; 2754191783Srmacklem nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 2755191783Srmacklem TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist); 2756191783Srmacklem nfsv4root_mnt.mnt_export = NULL; 2757191783Srmacklem TAILQ_INIT(&nfsv4root_opt); 2758191783Srmacklem TAILQ_INIT(&nfsv4root_newopt); 2759191783Srmacklem nfsv4root_mnt.mnt_opt = &nfsv4root_opt; 2760191783Srmacklem nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt; 2761191783Srmacklem nfsv4root_mnt.mnt_nvnodelistsize = 0; 2762191783Srmacklem} 2763191783Srmacklem 2764191783Srmacklem/* 2765191783Srmacklem * Get a vnode for a file handle, without checking exports, etc. 2766191783Srmacklem */ 2767191783Srmacklemstruct vnode * 2768191783Srmacklemnfsvno_getvp(fhandle_t *fhp) 2769191783Srmacklem{ 2770191783Srmacklem struct mount *mp; 2771191783Srmacklem struct vnode *vp; 2772191783Srmacklem int error; 2773191783Srmacklem 2774191783Srmacklem mp = vfs_getvfs(&fhp->fh_fsid); 2775191783Srmacklem if (mp == NULL) 2776191783Srmacklem return (NULL); 2777191783Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, &vp); 2778191783Srmacklem if (error) 2779191783Srmacklem return (NULL); 2780191783Srmacklem return (vp); 2781191783Srmacklem} 2782191783Srmacklem 2783191783Srmacklem/* 2784191783Srmacklem * Check to see it a byte range lock held by a process running 2785191783Srmacklem * locally on the server conflicts with the new lock. 2786191783Srmacklem */ 2787191783Srmacklemint 2788191783Srmacklemnfsvno_localconflict(struct vnode *vp, int ftype, u_int64_t first, 2789192256Srmacklem u_int64_t end, struct nfslockconflict *cfp, struct thread *td) 2790191783Srmacklem{ 2791191783Srmacklem int error; 2792191783Srmacklem struct flock fl; 2793191783Srmacklem 2794191783Srmacklem if (!nfsrv_dolocallocks) 2795191783Srmacklem return (0); 2796191783Srmacklem fl.l_whence = SEEK_SET; 2797191783Srmacklem fl.l_type = ftype; 2798191783Srmacklem fl.l_start = (off_t)first; 2799191783Srmacklem if (end == NFS64BITSSET) 2800191783Srmacklem fl.l_len = 0; 2801191783Srmacklem else 2802191783Srmacklem fl.l_len = (off_t)(end - first); 2803191783Srmacklem /* 2804192256Srmacklem * For FreeBSD8, the l_pid and l_sysid must be set to the same 2805192256Srmacklem * values for all calls, so that all locks will be held by the 2806192256Srmacklem * nfsd server. (The nfsd server handles conflicts between the 2807192256Srmacklem * various clients.) 2808192256Srmacklem * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 2809192256Srmacklem * bytes, so it can't be put in l_sysid. 2810191783Srmacklem */ 2811192503Srmacklem if (nfsv4_sysid == 0) 2812192503Srmacklem nfsv4_sysid = nlm_acquire_next_sysid(); 2813192256Srmacklem fl.l_pid = (pid_t)0; 2814192503Srmacklem fl.l_sysid = (int)nfsv4_sysid; 2815192256Srmacklem 2816192256Srmacklem NFSVOPUNLOCK(vp, 0, td); 2817192256Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_GETLK, &fl, 2818192256Srmacklem (F_POSIX | F_REMOTE)); 2819192256Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, td); 2820191783Srmacklem if (error) 2821191783Srmacklem return (error); 2822191783Srmacklem if (fl.l_type == F_UNLCK) 2823191783Srmacklem return (0); 2824191783Srmacklem if (cfp != NULL) { 2825191783Srmacklem cfp->cl_clientid.lval[0] = cfp->cl_clientid.lval[1] = 0; 2826191783Srmacklem cfp->cl_first = (u_int64_t)fl.l_start; 2827191783Srmacklem if (fl.l_len == 0) 2828191783Srmacklem cfp->cl_end = NFS64BITSSET; 2829191783Srmacklem else 2830191783Srmacklem cfp->cl_end = (u_int64_t) 2831191783Srmacklem (fl.l_start + fl.l_len); 2832191783Srmacklem if (fl.l_type == F_WRLCK) 2833191783Srmacklem cfp->cl_flags = NFSLCK_WRITE; 2834191783Srmacklem else 2835191783Srmacklem cfp->cl_flags = NFSLCK_READ; 2836191783Srmacklem sprintf(cfp->cl_owner, "LOCALID%d", fl.l_pid); 2837191783Srmacklem cfp->cl_ownerlen = strlen(cfp->cl_owner); 2838191783Srmacklem return (NFSERR_DENIED); 2839191783Srmacklem } 2840191783Srmacklem return (NFSERR_INVAL); 2841191783Srmacklem} 2842191783Srmacklem 2843191783Srmacklem/* 2844191783Srmacklem * Do a local VOP_ADVLOCK(). 2845191783Srmacklem */ 2846191783Srmacklemint 2847191783Srmacklemnfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 2848192256Srmacklem u_int64_t end, struct thread *td) 2849191783Srmacklem{ 2850191783Srmacklem int error; 2851191783Srmacklem struct flock fl; 2852191783Srmacklem u_int64_t tlen; 2853191783Srmacklem 2854212833Srmacklem if (nfsrv_dolocallocks == 0) 2855191783Srmacklem return (0); 2856191783Srmacklem fl.l_whence = SEEK_SET; 2857191783Srmacklem fl.l_type = ftype; 2858191783Srmacklem fl.l_start = (off_t)first; 2859191783Srmacklem if (end == NFS64BITSSET) { 2860191783Srmacklem fl.l_len = 0; 2861191783Srmacklem } else { 2862191783Srmacklem tlen = end - first; 2863191783Srmacklem fl.l_len = (off_t)tlen; 2864191783Srmacklem } 2865191783Srmacklem /* 2866192256Srmacklem * For FreeBSD8, the l_pid and l_sysid must be set to the same 2867192256Srmacklem * values for all calls, so that all locks will be held by the 2868192256Srmacklem * nfsd server. (The nfsd server handles conflicts between the 2869192256Srmacklem * various clients.) 2870192256Srmacklem * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 2871192256Srmacklem * bytes, so it can't be put in l_sysid. 2872191783Srmacklem */ 2873192503Srmacklem if (nfsv4_sysid == 0) 2874192503Srmacklem nfsv4_sysid = nlm_acquire_next_sysid(); 2875192256Srmacklem fl.l_pid = (pid_t)0; 2876192503Srmacklem fl.l_sysid = (int)nfsv4_sysid; 2877192256Srmacklem 2878192256Srmacklem NFSVOPUNLOCK(vp, 0, td); 2879212833Srmacklem if (ftype == F_UNLCK) 2880212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, 2881212833Srmacklem (F_POSIX | F_REMOTE)); 2882212833Srmacklem else 2883212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 2884212833Srmacklem (F_POSIX | F_REMOTE)); 2885192256Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, td); 2886191783Srmacklem return (error); 2887191783Srmacklem} 2888191783Srmacklem 2889191783Srmacklem/* 2890191783Srmacklem * Unlock an underlying local file system. 2891191783Srmacklem */ 2892191783Srmacklemvoid 2893191783Srmacklemnfsvno_unlockvfs(struct mount *mp) 2894191783Srmacklem{ 2895191783Srmacklem 2896191783Srmacklem VFS_UNLOCK_GIANT(mp); 2897191783Srmacklem} 2898191783Srmacklem 2899191783Srmacklem/* 2900191783Srmacklem * Lock an underlying file system, as required, and return 2901191783Srmacklem * whether or not it is locked. 2902191783Srmacklem */ 2903191783Srmacklemint 2904191783Srmacklemnfsvno_lockvfs(struct mount *mp) 2905191783Srmacklem{ 2906191783Srmacklem int ret; 2907191783Srmacklem 2908191783Srmacklem ret = VFS_LOCK_GIANT(mp); 2909191783Srmacklem return (ret); 2910191783Srmacklem} 2911191783Srmacklem 2912191783Srmacklem/* 2913191783Srmacklem * Check the nfsv4 root exports. 2914191783Srmacklem */ 2915191783Srmacklemint 2916191783Srmacklemnfsvno_v4rootexport(struct nfsrv_descript *nd) 2917191783Srmacklem{ 2918191783Srmacklem struct ucred *credanon; 2919192121Srmacklem int exflags, error, numsecflavor, *secflavors, i; 2920191783Srmacklem 2921191783Srmacklem error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags, 2922192121Srmacklem &credanon, &numsecflavor, &secflavors); 2923191783Srmacklem if (error) 2924191783Srmacklem return (NFSERR_PROGUNAVAIL); 2925191940Skan if (credanon != NULL) 2926191940Skan crfree(credanon); 2927192121Srmacklem for (i = 0; i < numsecflavor; i++) { 2928192121Srmacklem if (secflavors[i] == AUTH_SYS) 2929192121Srmacklem nd->nd_flag |= ND_EXAUTHSYS; 2930192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5) 2931192121Srmacklem nd->nd_flag |= ND_EXGSS; 2932192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5I) 2933192121Srmacklem nd->nd_flag |= ND_EXGSSINTEGRITY; 2934192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5P) 2935192121Srmacklem nd->nd_flag |= ND_EXGSSPRIVACY; 2936192121Srmacklem } 2937191783Srmacklem return (0); 2938191783Srmacklem} 2939191783Srmacklem 2940191783Srmacklem/* 2941191783Srmacklem * Nfs server psuedo system call for the nfsd's 2942191783Srmacklem */ 2943191783Srmacklem/* 2944191783Srmacklem * MPSAFE 2945191783Srmacklem */ 2946191783Srmacklemstatic int 2947191783Srmacklemnfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 2948191783Srmacklem{ 2949191783Srmacklem struct file *fp; 2950192017Srmacklem struct nfsd_addsock_args sockarg; 2951192017Srmacklem struct nfsd_nfsd_args nfsdarg; 2952191783Srmacklem int error; 2953191783Srmacklem 2954191783Srmacklem if (uap->flag & NFSSVC_NFSDADDSOCK) { 2955192017Srmacklem error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 2956191783Srmacklem if (error) 2957191783Srmacklem return (error); 2958192017Srmacklem if ((error = fget(td, sockarg.sock, &fp)) != 0) { 2959191783Srmacklem return (error); 2960191783Srmacklem } 2961191783Srmacklem if (fp->f_type != DTYPE_SOCKET) { 2962191783Srmacklem fdrop(fp, td); 2963191783Srmacklem return (EPERM); 2964191783Srmacklem } 2965191783Srmacklem error = nfsrvd_addsock(fp); 2966191783Srmacklem fdrop(fp, td); 2967191783Srmacklem } else if (uap->flag & NFSSVC_NFSDNFSD) { 2968192017Srmacklem if (uap->argp == NULL) 2969192017Srmacklem return (EINVAL); 2970192017Srmacklem error = copyin(uap->argp, (caddr_t)&nfsdarg, 2971192017Srmacklem sizeof (nfsdarg)); 2972192017Srmacklem if (error) 2973192017Srmacklem return (error); 2974192017Srmacklem error = nfsrvd_nfsd(td, &nfsdarg); 2975191783Srmacklem } else { 2976191783Srmacklem error = nfssvc_srvcall(td, uap, td->td_ucred); 2977191783Srmacklem } 2978191783Srmacklem return (error); 2979191783Srmacklem} 2980191783Srmacklem 2981191783Srmacklemstatic int 2982191783Srmacklemnfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 2983191783Srmacklem{ 2984191783Srmacklem struct nfsex_args export; 2985191783Srmacklem struct file *fp = NULL; 2986191783Srmacklem int stablefd, len; 2987191783Srmacklem struct nfsd_clid adminrevoke; 2988191783Srmacklem struct nfsd_dumplist dumplist; 2989191783Srmacklem struct nfsd_dumpclients *dumpclients; 2990191783Srmacklem struct nfsd_dumplocklist dumplocklist; 2991191783Srmacklem struct nfsd_dumplocks *dumplocks; 2992191783Srmacklem struct nameidata nd; 2993191783Srmacklem vnode_t vp; 2994191783Srmacklem int error = EINVAL; 2995191783Srmacklem 2996191783Srmacklem if (uap->flag & NFSSVC_PUBLICFH) { 2997191783Srmacklem NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 2998191783Srmacklem sizeof (fhandle_t)); 2999191783Srmacklem error = copyin(uap->argp, 3000191783Srmacklem &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 3001191783Srmacklem if (!error) 3002191783Srmacklem nfs_pubfhset = 1; 3003191783Srmacklem } else if (uap->flag & NFSSVC_V4ROOTEXPORT) { 3004191783Srmacklem error = copyin(uap->argp,(caddr_t)&export, 3005191783Srmacklem sizeof (struct nfsex_args)); 3006191783Srmacklem if (!error) 3007191783Srmacklem error = nfsrv_v4rootexport(&export, cred, p); 3008191783Srmacklem } else if (uap->flag & NFSSVC_NOPUBLICFH) { 3009191783Srmacklem nfs_pubfhset = 0; 3010191783Srmacklem error = 0; 3011191783Srmacklem } else if (uap->flag & NFSSVC_STABLERESTART) { 3012191783Srmacklem error = copyin(uap->argp, (caddr_t)&stablefd, 3013191783Srmacklem sizeof (int)); 3014191783Srmacklem if (!error) 3015191783Srmacklem error = fp_getfvp(p, stablefd, &fp, &vp); 3016191783Srmacklem if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 3017191783Srmacklem error = EBADF; 3018191783Srmacklem if (!error && newnfs_numnfsd != 0) 3019191783Srmacklem error = EPERM; 3020191783Srmacklem if (!error) { 3021191783Srmacklem nfsrv_stablefirst.nsf_fp = fp; 3022191783Srmacklem nfsrv_setupstable(p); 3023191783Srmacklem } 3024191783Srmacklem } else if (uap->flag & NFSSVC_ADMINREVOKE) { 3025191783Srmacklem error = copyin(uap->argp, (caddr_t)&adminrevoke, 3026191783Srmacklem sizeof (struct nfsd_clid)); 3027191783Srmacklem if (!error) 3028191783Srmacklem error = nfsrv_adminrevoke(&adminrevoke, p); 3029191783Srmacklem } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 3030191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplist, 3031191783Srmacklem sizeof (struct nfsd_dumplist)); 3032191783Srmacklem if (!error && (dumplist.ndl_size < 1 || 3033191783Srmacklem dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 3034191783Srmacklem error = EPERM; 3035191783Srmacklem if (!error) { 3036191783Srmacklem len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 3037191783Srmacklem dumpclients = (struct nfsd_dumpclients *)malloc(len, 3038191783Srmacklem M_TEMP, M_WAITOK); 3039191783Srmacklem nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 3040191783Srmacklem error = copyout(dumpclients, 3041191783Srmacklem CAST_USER_ADDR_T(dumplist.ndl_list), len); 3042191783Srmacklem free((caddr_t)dumpclients, M_TEMP); 3043191783Srmacklem } 3044191783Srmacklem } else if (uap->flag & NFSSVC_DUMPLOCKS) { 3045191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplocklist, 3046191783Srmacklem sizeof (struct nfsd_dumplocklist)); 3047191783Srmacklem if (!error && (dumplocklist.ndllck_size < 1 || 3048191783Srmacklem dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 3049191783Srmacklem error = EPERM; 3050191783Srmacklem if (!error) 3051191783Srmacklem error = nfsrv_lookupfilename(&nd, 3052191783Srmacklem dumplocklist.ndllck_fname, p); 3053191783Srmacklem if (!error) { 3054191783Srmacklem len = sizeof (struct nfsd_dumplocks) * 3055191783Srmacklem dumplocklist.ndllck_size; 3056191783Srmacklem dumplocks = (struct nfsd_dumplocks *)malloc(len, 3057191783Srmacklem M_TEMP, M_WAITOK); 3058191783Srmacklem nfsrv_dumplocks(nd.ni_vp, dumplocks, 3059191783Srmacklem dumplocklist.ndllck_size, p); 3060191783Srmacklem vput(nd.ni_vp); 3061191783Srmacklem error = copyout(dumplocks, 3062191783Srmacklem CAST_USER_ADDR_T(dumplocklist.ndllck_list), len); 3063191783Srmacklem free((caddr_t)dumplocks, M_TEMP); 3064191783Srmacklem } 3065191783Srmacklem } 3066191783Srmacklem return (error); 3067191783Srmacklem} 3068191783Srmacklem 3069192121Srmacklem/* 3070192121Srmacklem * Check exports. 3071192121Srmacklem * Returns 0 if ok, 1 otherwise. 3072192121Srmacklem */ 3073192121Srmacklemint 3074192121Srmacklemnfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 3075192121Srmacklem{ 3076192121Srmacklem int i; 3077192121Srmacklem 3078192121Srmacklem /* 3079192121Srmacklem * This seems odd, but allow the case where the security flavor 3080192121Srmacklem * list is empty. This happens when NFSv4 is traversing non-exported 3081192121Srmacklem * file systems. Exported file systems should always have a non-empty 3082192121Srmacklem * security flavor list. 3083192121Srmacklem */ 3084192121Srmacklem if (exp->nes_numsecflavor == 0) 3085192121Srmacklem return (0); 3086192121Srmacklem 3087192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) { 3088192121Srmacklem /* 3089192121Srmacklem * The tests for privacy and integrity must be first, 3090192121Srmacklem * since ND_GSS is set for everything but AUTH_SYS. 3091192121Srmacklem */ 3092192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 3093192121Srmacklem (nd->nd_flag & ND_GSSPRIVACY)) 3094192121Srmacklem return (0); 3095192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 3096192121Srmacklem (nd->nd_flag & ND_GSSINTEGRITY)) 3097192121Srmacklem return (0); 3098192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 3099192121Srmacklem (nd->nd_flag & ND_GSS)) 3100192121Srmacklem return (0); 3101192121Srmacklem if (exp->nes_secflavors[i] == AUTH_SYS && 3102192121Srmacklem (nd->nd_flag & ND_GSS) == 0) 3103192121Srmacklem return (0); 3104192121Srmacklem } 3105192121Srmacklem return (1); 3106192121Srmacklem} 3107192121Srmacklem 3108214224Srmacklem/* 3109214224Srmacklem * Calculate a hash value for the fid in a file handle. 3110214224Srmacklem */ 3111214255Srmacklemuint32_t 3112214224Srmacklemnfsrv_hashfh(fhandle_t *fhp) 3113214224Srmacklem{ 3114214255Srmacklem uint32_t hashval; 3115214224Srmacklem 3116214255Srmacklem hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0); 3117214224Srmacklem return (hashval); 3118214224Srmacklem} 3119214224Srmacklem 3120191783Srmacklemextern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 3121191783Srmacklem 3122191783Srmacklem/* 3123191783Srmacklem * Called once to initialize data structures... 3124191783Srmacklem */ 3125191783Srmacklemstatic int 3126191783Srmacklemnfsd_modevent(module_t mod, int type, void *data) 3127191783Srmacklem{ 3128191783Srmacklem int error = 0; 3129191783Srmacklem static int loaded = 0; 3130191783Srmacklem 3131191783Srmacklem switch (type) { 3132191783Srmacklem case MOD_LOAD: 3133191783Srmacklem if (loaded) 3134191783Srmacklem return (0); 3135191783Srmacklem newnfs_portinit(); 3136191783Srmacklem mtx_init(&nfs_cache_mutex, "nfs_cache_mutex", NULL, MTX_DEF); 3137191783Srmacklem mtx_init(&nfs_v4root_mutex, "nfs_v4root_mutex", NULL, MTX_DEF); 3138191783Srmacklem mtx_init(&nfsv4root_mnt.mnt_mtx, "struct mount mtx", NULL, 3139191783Srmacklem MTX_DEF); 3140191783Srmacklem lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0); 3141191783Srmacklem nfsrvd_initcache(); 3142191783Srmacklem nfsd_init(); 3143191783Srmacklem NFSD_LOCK(); 3144191783Srmacklem nfsrvd_init(0); 3145191783Srmacklem NFSD_UNLOCK(); 3146191783Srmacklem nfsd_mntinit(); 3147191783Srmacklem#ifdef VV_DISABLEDELEG 3148191783Srmacklem vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 3149191783Srmacklem vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 3150191783Srmacklem#endif 3151191783Srmacklem nfsd_call_servertimer = nfsrv_servertimer; 3152191783Srmacklem nfsd_call_nfsd = nfssvc_nfsd; 3153191783Srmacklem loaded = 1; 3154191783Srmacklem break; 3155191783Srmacklem 3156191783Srmacklem case MOD_UNLOAD: 3157191783Srmacklem if (newnfs_numnfsd != 0) { 3158191783Srmacklem error = EBUSY; 3159191783Srmacklem break; 3160191783Srmacklem } 3161191783Srmacklem 3162191783Srmacklem#ifdef VV_DISABLEDELEG 3163191783Srmacklem vn_deleg_ops.vndeleg_recall = NULL; 3164191783Srmacklem vn_deleg_ops.vndeleg_disable = NULL; 3165191783Srmacklem#endif 3166191783Srmacklem nfsd_call_servertimer = NULL; 3167191783Srmacklem nfsd_call_nfsd = NULL; 3168191783Srmacklem /* and get rid of the locks */ 3169191783Srmacklem mtx_destroy(&nfs_cache_mutex); 3170191783Srmacklem mtx_destroy(&nfs_v4root_mutex); 3171191783Srmacklem mtx_destroy(&nfsv4root_mnt.mnt_mtx); 3172191783Srmacklem lockdestroy(&nfsv4root_mnt.mnt_explock); 3173191783Srmacklem loaded = 0; 3174191783Srmacklem break; 3175191783Srmacklem default: 3176191783Srmacklem error = EOPNOTSUPP; 3177191783Srmacklem break; 3178191783Srmacklem } 3179191783Srmacklem return error; 3180191783Srmacklem} 3181191783Srmacklemstatic moduledata_t nfsd_mod = { 3182191783Srmacklem "nfsd", 3183191783Srmacklem nfsd_modevent, 3184191783Srmacklem NULL, 3185191783Srmacklem}; 3186191783SrmacklemDECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 3187191783Srmacklem 3188191783Srmacklem/* So that loader and kldload(2) can find us, wherever we are.. */ 3189191783SrmacklemMODULE_VERSION(nfsd, 1); 3190191783SrmacklemMODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 3191192574SrmacklemMODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 3192209191SrmacklemMODULE_DEPEND(nfsd, krpc, 1, 1, 1); 3193209191SrmacklemMODULE_DEPEND(nfsd, nfssvc, 1, 1, 1); 3194191783Srmacklem 3195