nfs_nfsdport.c revision 214149
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 214149 2010-10-21 18:49:12Z 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> 44191783Srmacklem#include <sys/sysctl.h> 45192503Srmacklem#include <nlm/nlm_prot.h> 46192503Srmacklem#include <nlm/nlm.h> 47191783Srmacklem 48191783Srmacklemextern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1; 49191783Srmacklemextern int nfsv4root_set; 50191783Srmacklemextern int nfsrv_useacl; 51191783Srmacklemextern int newnfs_numnfsd; 52191783Srmacklemextern struct mount nfsv4root_mnt; 53191783Srmacklemextern struct nfsrv_stablefirst nfsrv_stablefirst; 54191783Srmacklemextern void (*nfsd_call_servertimer)(void); 55191783Srmacklemstruct vfsoptlist nfsv4root_opt, nfsv4root_newopt; 56191783SrmacklemNFSDLOCKMUTEX; 57191783Srmacklemstruct mtx nfs_cache_mutex; 58191783Srmacklemstruct mtx nfs_v4root_mutex; 59191783Srmacklemstruct nfsrvfh nfs_rootfh, nfs_pubfh; 60191783Srmacklemint nfs_pubfhset = 0, nfs_rootfhset = 0; 61192503Srmacklemstatic uint32_t nfsv4_sysid = 0; 62191783Srmacklem 63192255Srmacklemstatic int nfssvc_srvcall(struct thread *, struct nfssvc_args *, 64192255Srmacklem struct ucred *); 65191783Srmacklem 66191783Srmacklemstatic int enable_crossmntpt = 1; 67191783Srmacklemstatic int nfs_commit_blks; 68191783Srmacklemstatic int nfs_commit_miss; 69191783Srmacklemextern int nfsrv_issuedelegs; 70192255Srmacklemextern int nfsrv_dolocallocks; 71192255Srmacklem 72191783SrmacklemSYSCTL_DECL(_vfs_newnfs); 73192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, mirrormnt, CTLFLAG_RW, &enable_crossmntpt, 74192255Srmacklem 0, "Enable nfsd to cross mount points"); 75192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 76192255Srmacklem 0, ""); 77192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 78192255Srmacklem 0, ""); 79192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, issue_delegations, CTLFLAG_RW, 80192255Srmacklem &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); 81192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, enable_locallocks, CTLFLAG_RW, 82192255Srmacklem &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files"); 83191783Srmacklem 84191783Srmacklem#define NUM_HEURISTIC 1017 85191783Srmacklem#define NHUSE_INIT 64 86191783Srmacklem#define NHUSE_INC 16 87191783Srmacklem#define NHUSE_MAX 2048 88191783Srmacklem 89191783Srmacklemstatic struct nfsheur { 90191783Srmacklem struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 91191783Srmacklem off_t nh_nextr; /* next offset for sequential detection */ 92191783Srmacklem int nh_use; /* use count for selection */ 93191783Srmacklem int nh_seqcount; /* heuristic */ 94191783Srmacklem} nfsheur[NUM_HEURISTIC]; 95191783Srmacklem 96191783Srmacklem 97191783Srmacklem/* 98191783Srmacklem * Get attributes into nfsvattr structure. 99191783Srmacklem */ 100191783Srmacklemint 101191783Srmacklemnfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 102191783Srmacklem struct thread *p) 103191783Srmacklem{ 104191783Srmacklem int error, lockedit = 0; 105191783Srmacklem 106191783Srmacklem /* Since FreeBSD insists the vnode be locked... */ 107191783Srmacklem if (VOP_ISLOCKED(vp) != LK_EXCLUSIVE) { 108191783Srmacklem lockedit = 1; 109191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 110191783Srmacklem } 111191783Srmacklem error = VOP_GETATTR(vp, &nvap->na_vattr, cred); 112191783Srmacklem if (lockedit) 113191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 114191783Srmacklem return (error); 115191783Srmacklem} 116191783Srmacklem 117191783Srmacklem/* 118191783Srmacklem * Get a file handle for a vnode. 119191783Srmacklem */ 120191783Srmacklemint 121191783Srmacklemnfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 122191783Srmacklem{ 123191783Srmacklem int error; 124191783Srmacklem 125191783Srmacklem NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 126191783Srmacklem fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 127191783Srmacklem error = VOP_VPTOFH(vp, &fhp->fh_fid); 128191783Srmacklem return (error); 129191783Srmacklem} 130191783Srmacklem 131191783Srmacklem/* 132191783Srmacklem * Perform access checking for vnodes obtained from file handles that would 133191783Srmacklem * refer to files already opened by a Unix client. You cannot just use 134200999Srmacklem * vn_writechk() and VOP_ACCESSX() for two reasons. 135200999Srmacklem * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write 136200999Srmacklem * case. 137191783Srmacklem * 2 - The owner is to be given access irrespective of mode bits for some 138191783Srmacklem * operations, so that processes that chmod after opening a file don't 139191783Srmacklem * break. 140191783Srmacklem */ 141191783Srmacklemint 142200999Srmacklemnfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred, 143200999Srmacklem struct nfsexstuff *exp, struct thread *p, int override, int vpislocked, 144200999Srmacklem u_int32_t *supportedtypep) 145191783Srmacklem{ 146191783Srmacklem struct vattr vattr; 147191783Srmacklem int error = 0, getret = 0; 148191783Srmacklem 149191783Srmacklem if (accmode & VWRITE) { 150191783Srmacklem /* Just vn_writechk() changed to check rdonly */ 151191783Srmacklem /* 152191783Srmacklem * Disallow write attempts on read-only file systems; 153191783Srmacklem * unless the file is a socket or a block or character 154191783Srmacklem * device resident on the file system. 155191783Srmacklem */ 156191783Srmacklem if (NFSVNO_EXRDONLY(exp) || 157200999Srmacklem (vp->v_mount->mnt_flag & MNT_RDONLY)) { 158191783Srmacklem switch (vp->v_type) { 159191783Srmacklem case VREG: 160191783Srmacklem case VDIR: 161191783Srmacklem case VLNK: 162191783Srmacklem return (EROFS); 163191783Srmacklem default: 164191783Srmacklem break; 165191783Srmacklem } 166191783Srmacklem } 167191783Srmacklem /* 168191783Srmacklem * If there's shared text associated with 169191783Srmacklem * the inode, try to free it up once. If 170191783Srmacklem * we fail, we can't allow writing. 171191783Srmacklem */ 172191783Srmacklem if (vp->v_vflag & VV_TEXT) 173191783Srmacklem return (ETXTBSY); 174191783Srmacklem } 175191783Srmacklem if (vpislocked == 0) 176191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 177191783Srmacklem 178191783Srmacklem /* 179191783Srmacklem * Should the override still be applied when ACLs are enabled? 180191783Srmacklem */ 181200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 182200999Srmacklem if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) { 183200999Srmacklem /* 184200999Srmacklem * Try again with VEXPLICIT_DENY, to see if the test for 185200999Srmacklem * deletion is supported. 186200999Srmacklem */ 187200999Srmacklem error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p); 188200999Srmacklem if (error == 0) { 189200999Srmacklem if (vp->v_type == VDIR) { 190200999Srmacklem accmode &= ~(VDELETE | VDELETE_CHILD); 191200999Srmacklem accmode |= VWRITE; 192200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 193200999Srmacklem } else if (supportedtypep != NULL) { 194200999Srmacklem *supportedtypep &= ~NFSACCESS_DELETE; 195200999Srmacklem } 196200999Srmacklem } 197200999Srmacklem } 198191783Srmacklem 199191783Srmacklem /* 200191783Srmacklem * Allow certain operations for the owner (reads and writes 201191783Srmacklem * on files that are already open). 202191783Srmacklem */ 203191783Srmacklem if (override != NFSACCCHK_NOOVERRIDE && 204191783Srmacklem (error == EPERM || error == EACCES)) { 205191783Srmacklem if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 206191783Srmacklem error = 0; 207191783Srmacklem else if (override & NFSACCCHK_ALLOWOWNER) { 208191783Srmacklem getret = VOP_GETATTR(vp, &vattr, cred); 209191783Srmacklem if (getret == 0 && cred->cr_uid == vattr.va_uid) 210191783Srmacklem error = 0; 211191783Srmacklem } 212191783Srmacklem } 213191783Srmacklem if (vpislocked == 0) 214191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 215191783Srmacklem return (error); 216191783Srmacklem} 217191783Srmacklem 218191783Srmacklem/* 219191783Srmacklem * Set attribute(s) vnop. 220191783Srmacklem */ 221191783Srmacklemint 222191783Srmacklemnfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 223191783Srmacklem struct thread *p, struct nfsexstuff *exp) 224191783Srmacklem{ 225191783Srmacklem int error; 226191783Srmacklem 227191783Srmacklem error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 228191783Srmacklem return (error); 229191783Srmacklem} 230191783Srmacklem 231191783Srmacklem/* 232191783Srmacklem * Set up nameidata for a lookup() call and do it 233191783Srmacklem * For the cases where we are crossing mount points 234191783Srmacklem * (looking up the public fh path or the v4 root path when 235191783Srmacklem * not using a pseudo-root fs), set/release the Giant lock, 236191783Srmacklem * as required. 237191783Srmacklem */ 238191783Srmacklemint 239191783Srmacklemnfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 240191783Srmacklem struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p, 241191783Srmacklem struct vnode **retdirp) 242191783Srmacklem{ 243191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 244191783Srmacklem int i; 245191783Srmacklem struct iovec aiov; 246191783Srmacklem struct uio auio; 247191783Srmacklem int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 248191783Srmacklem int error = 0, crossmnt; 249191783Srmacklem char *cp; 250191783Srmacklem 251191783Srmacklem *retdirp = NULL; 252191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 253191783Srmacklem /* 254191783Srmacklem * Extract and set starting directory. 255191783Srmacklem */ 256191783Srmacklem if (dp->v_type != VDIR) { 257191783Srmacklem if (islocked) 258191783Srmacklem vput(dp); 259191783Srmacklem else 260191783Srmacklem vrele(dp); 261191783Srmacklem nfsvno_relpathbuf(ndp); 262191783Srmacklem return (ENOTDIR); 263191783Srmacklem } 264191783Srmacklem if (islocked) 265191783Srmacklem NFSVOPUNLOCK(dp, 0, p); 266191783Srmacklem VREF(dp); 267191783Srmacklem *retdirp = dp; 268191783Srmacklem if (NFSVNO_EXRDONLY(exp)) 269191783Srmacklem cnp->cn_flags |= RDONLY; 270191783Srmacklem ndp->ni_segflg = UIO_SYSSPACE; 271191783Srmacklem crossmnt = 1; 272191783Srmacklem 273191783Srmacklem if (nd->nd_flag & ND_PUBLOOKUP) { 274191783Srmacklem ndp->ni_loopcnt = 0; 275191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 276191783Srmacklem vrele(dp); 277191783Srmacklem /* 278191783Srmacklem * Check for degenerate pathnames here, since lookup() 279191783Srmacklem * panics on them. 280191783Srmacklem */ 281191783Srmacklem for (i = 1; i < ndp->ni_pathlen; i++) 282191783Srmacklem if (cnp->cn_pnbuf[i] != '/') 283191783Srmacklem break; 284191783Srmacklem if (i == ndp->ni_pathlen) { 285191783Srmacklem error = NFSERR_ACCES; 286191783Srmacklem goto out; 287191783Srmacklem } 288191783Srmacklem dp = rootvnode; 289191783Srmacklem VREF(dp); 290191783Srmacklem } 291191783Srmacklem } else if ((enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 292191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) { 293191783Srmacklem /* 294191783Srmacklem * Only cross mount points for NFSv4 when doing a 295191783Srmacklem * mount while traversing the file system above 296191783Srmacklem * the mount point, unless enable_crossmntpt is set. 297191783Srmacklem */ 298191783Srmacklem cnp->cn_flags |= NOCROSSMOUNT; 299191783Srmacklem crossmnt = 0; 300191783Srmacklem } 301191783Srmacklem 302191783Srmacklem /* 303191783Srmacklem * Initialize for scan, set ni_startdir and bump ref on dp again 304191783Srmacklem * becuase lookup() will dereference ni_startdir. 305191783Srmacklem */ 306191783Srmacklem 307191783Srmacklem cnp->cn_thread = p; 308191783Srmacklem ndp->ni_startdir = dp; 309191783Srmacklem ndp->ni_rootdir = rootvnode; 310191783Srmacklem 311191783Srmacklem if (!lockleaf) 312191783Srmacklem cnp->cn_flags |= LOCKLEAF; 313191783Srmacklem for (;;) { 314191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 315191783Srmacklem /* 316191783Srmacklem * Call lookup() to do the real work. If an error occurs, 317191783Srmacklem * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 318191783Srmacklem * we do not have to dereference anything before returning. 319191783Srmacklem * In either case ni_startdir will be dereferenced and NULLed 320191783Srmacklem * out. 321191783Srmacklem */ 322191783Srmacklem if (exp->nes_vfslocked) 323191783Srmacklem ndp->ni_cnd.cn_flags |= GIANTHELD; 324191783Srmacklem error = lookup(ndp); 325191783Srmacklem /* 326191783Srmacklem * The Giant lock should only change when 327191783Srmacklem * crossing mount points. 328191783Srmacklem */ 329191783Srmacklem if (crossmnt) { 330191783Srmacklem exp->nes_vfslocked = 331191783Srmacklem (ndp->ni_cnd.cn_flags & GIANTHELD) != 0; 332191783Srmacklem ndp->ni_cnd.cn_flags &= ~GIANTHELD; 333191783Srmacklem } 334191783Srmacklem if (error) 335191783Srmacklem break; 336191783Srmacklem 337191783Srmacklem /* 338191783Srmacklem * Check for encountering a symbolic link. Trivial 339191783Srmacklem * termination occurs if no symlink encountered. 340191783Srmacklem */ 341191783Srmacklem if ((cnp->cn_flags & ISSYMLINK) == 0) { 342191783Srmacklem if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0) 343191783Srmacklem nfsvno_relpathbuf(ndp); 344191783Srmacklem if (ndp->ni_vp && !lockleaf) 345191783Srmacklem NFSVOPUNLOCK(ndp->ni_vp, 0, p); 346191783Srmacklem break; 347191783Srmacklem } 348191783Srmacklem 349191783Srmacklem /* 350191783Srmacklem * Validate symlink 351191783Srmacklem */ 352191783Srmacklem if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 353191783Srmacklem NFSVOPUNLOCK(ndp->ni_dvp, 0, p); 354191783Srmacklem if (!(nd->nd_flag & ND_PUBLOOKUP)) { 355191783Srmacklem error = EINVAL; 356191783Srmacklem goto badlink2; 357191783Srmacklem } 358191783Srmacklem 359191783Srmacklem if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 360191783Srmacklem error = ELOOP; 361191783Srmacklem goto badlink2; 362191783Srmacklem } 363191783Srmacklem if (ndp->ni_pathlen > 1) 364191783Srmacklem cp = uma_zalloc(namei_zone, M_WAITOK); 365191783Srmacklem else 366191783Srmacklem cp = cnp->cn_pnbuf; 367191783Srmacklem aiov.iov_base = cp; 368191783Srmacklem aiov.iov_len = MAXPATHLEN; 369191783Srmacklem auio.uio_iov = &aiov; 370191783Srmacklem auio.uio_iovcnt = 1; 371191783Srmacklem auio.uio_offset = 0; 372191783Srmacklem auio.uio_rw = UIO_READ; 373191783Srmacklem auio.uio_segflg = UIO_SYSSPACE; 374191783Srmacklem auio.uio_td = NULL; 375191783Srmacklem auio.uio_resid = MAXPATHLEN; 376191783Srmacklem error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 377191783Srmacklem if (error) { 378191783Srmacklem badlink1: 379191783Srmacklem if (ndp->ni_pathlen > 1) 380191783Srmacklem uma_zfree(namei_zone, cp); 381191783Srmacklem badlink2: 382191783Srmacklem vrele(ndp->ni_dvp); 383191783Srmacklem vput(ndp->ni_vp); 384191783Srmacklem break; 385191783Srmacklem } 386191783Srmacklem linklen = MAXPATHLEN - auio.uio_resid; 387191783Srmacklem if (linklen == 0) { 388191783Srmacklem error = ENOENT; 389191783Srmacklem goto badlink1; 390191783Srmacklem } 391191783Srmacklem if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 392191783Srmacklem error = ENAMETOOLONG; 393191783Srmacklem goto badlink1; 394191783Srmacklem } 395191783Srmacklem 396191783Srmacklem /* 397191783Srmacklem * Adjust or replace path 398191783Srmacklem */ 399191783Srmacklem if (ndp->ni_pathlen > 1) { 400191783Srmacklem NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 401191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 402191783Srmacklem cnp->cn_pnbuf = cp; 403191783Srmacklem } else 404191783Srmacklem cnp->cn_pnbuf[linklen] = '\0'; 405191783Srmacklem ndp->ni_pathlen += linklen; 406191783Srmacklem 407191783Srmacklem /* 408191783Srmacklem * Cleanup refs for next loop and check if root directory 409191783Srmacklem * should replace current directory. Normally ni_dvp 410191783Srmacklem * becomes the new base directory and is cleaned up when 411191783Srmacklem * we loop. Explicitly null pointers after invalidation 412191783Srmacklem * to clarify operation. 413191783Srmacklem */ 414191783Srmacklem vput(ndp->ni_vp); 415191783Srmacklem ndp->ni_vp = NULL; 416191783Srmacklem 417191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 418191783Srmacklem vrele(ndp->ni_dvp); 419191783Srmacklem ndp->ni_dvp = ndp->ni_rootdir; 420191783Srmacklem VREF(ndp->ni_dvp); 421191783Srmacklem } 422191783Srmacklem ndp->ni_startdir = ndp->ni_dvp; 423191783Srmacklem ndp->ni_dvp = NULL; 424191783Srmacklem } 425191783Srmacklem if (!lockleaf) 426191783Srmacklem cnp->cn_flags &= ~LOCKLEAF; 427191783Srmacklem 428191783Srmacklemout: 429191783Srmacklem if (error) { 430191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 431191783Srmacklem ndp->ni_vp = NULL; 432191783Srmacklem ndp->ni_dvp = NULL; 433191783Srmacklem ndp->ni_startdir = NULL; 434191783Srmacklem cnp->cn_flags &= ~HASBUF; 435191783Srmacklem } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 436191783Srmacklem ndp->ni_dvp = NULL; 437191783Srmacklem } 438191783Srmacklem return (error); 439191783Srmacklem} 440191783Srmacklem 441191783Srmacklem/* 442191783Srmacklem * Set up a pathname buffer and return a pointer to it and, optionally 443191783Srmacklem * set a hash pointer. 444191783Srmacklem */ 445191783Srmacklemvoid 446191783Srmacklemnfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 447191783Srmacklem{ 448191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 449191783Srmacklem 450191783Srmacklem cnp->cn_flags |= (NOMACCHECK | HASBUF); 451191783Srmacklem cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 452191783Srmacklem if (hashpp != NULL) 453191783Srmacklem *hashpp = NULL; 454191783Srmacklem *bufpp = cnp->cn_pnbuf; 455191783Srmacklem} 456191783Srmacklem 457191783Srmacklem/* 458191783Srmacklem * Release the above path buffer, if not released by nfsvno_namei(). 459191783Srmacklem */ 460191783Srmacklemvoid 461191783Srmacklemnfsvno_relpathbuf(struct nameidata *ndp) 462191783Srmacklem{ 463191783Srmacklem 464191783Srmacklem if ((ndp->ni_cnd.cn_flags & HASBUF) == 0) 465191783Srmacklem panic("nfsrelpath"); 466191783Srmacklem uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 467191783Srmacklem ndp->ni_cnd.cn_flags &= ~HASBUF; 468191783Srmacklem} 469191783Srmacklem 470191783Srmacklem/* 471191783Srmacklem * Readlink vnode op into an mbuf list. 472191783Srmacklem */ 473191783Srmacklemint 474191783Srmacklemnfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p, 475191783Srmacklem struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 476191783Srmacklem{ 477191783Srmacklem struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; 478191783Srmacklem struct iovec *ivp = iv; 479191783Srmacklem struct uio io, *uiop = &io; 480191783Srmacklem struct mbuf *mp, *mp2 = NULL, *mp3 = NULL; 481191783Srmacklem int i, len, tlen, error; 482191783Srmacklem 483191783Srmacklem len = 0; 484191783Srmacklem i = 0; 485191783Srmacklem while (len < NFS_MAXPATHLEN) { 486191783Srmacklem NFSMGET(mp); 487191783Srmacklem MCLGET(mp, M_WAIT); 488191783Srmacklem mp->m_len = NFSMSIZ(mp); 489191783Srmacklem if (len == 0) { 490191783Srmacklem mp3 = mp2 = mp; 491191783Srmacklem } else { 492191783Srmacklem mp2->m_next = mp; 493191783Srmacklem mp2 = mp; 494191783Srmacklem } 495191783Srmacklem if ((len + mp->m_len) > NFS_MAXPATHLEN) { 496191783Srmacklem mp->m_len = NFS_MAXPATHLEN - len; 497191783Srmacklem len = NFS_MAXPATHLEN; 498191783Srmacklem } else { 499191783Srmacklem len += mp->m_len; 500191783Srmacklem } 501191783Srmacklem ivp->iov_base = mtod(mp, caddr_t); 502191783Srmacklem ivp->iov_len = mp->m_len; 503191783Srmacklem i++; 504191783Srmacklem ivp++; 505191783Srmacklem } 506191783Srmacklem uiop->uio_iov = iv; 507191783Srmacklem uiop->uio_iovcnt = i; 508191783Srmacklem uiop->uio_offset = 0; 509191783Srmacklem uiop->uio_resid = len; 510191783Srmacklem uiop->uio_rw = UIO_READ; 511191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 512191783Srmacklem uiop->uio_td = NULL; 513191783Srmacklem error = VOP_READLINK(vp, uiop, cred); 514191783Srmacklem if (error) { 515191783Srmacklem m_freem(mp3); 516191783Srmacklem *lenp = 0; 517191783Srmacklem return (error); 518191783Srmacklem } 519191783Srmacklem if (uiop->uio_resid > 0) { 520191783Srmacklem len -= uiop->uio_resid; 521191783Srmacklem tlen = NFSM_RNDUP(len); 522191783Srmacklem nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len); 523191783Srmacklem } 524191783Srmacklem *lenp = len; 525191783Srmacklem *mpp = mp3; 526191783Srmacklem *mpendp = mp; 527191783Srmacklem return (0); 528191783Srmacklem} 529191783Srmacklem 530191783Srmacklem/* 531191783Srmacklem * Read vnode op call into mbuf list. 532191783Srmacklem */ 533191783Srmacklemint 534191783Srmacklemnfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 535191783Srmacklem struct thread *p, struct mbuf **mpp, struct mbuf **mpendp) 536191783Srmacklem{ 537191783Srmacklem struct mbuf *m; 538191783Srmacklem int i; 539191783Srmacklem struct iovec *iv; 540191783Srmacklem struct iovec *iv2; 541191783Srmacklem int error = 0, len, left, siz, tlen, ioflag = 0, hi, try = 32; 542191783Srmacklem struct mbuf *m2 = NULL, *m3; 543191783Srmacklem struct uio io, *uiop = &io; 544191783Srmacklem struct nfsheur *nh; 545191783Srmacklem 546191783Srmacklem /* 547191783Srmacklem * Calculate seqcount for heuristic 548191783Srmacklem */ 549191783Srmacklem /* 550191783Srmacklem * Locate best candidate 551191783Srmacklem */ 552191783Srmacklem 553191783Srmacklem hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 554191783Srmacklem nh = &nfsheur[hi]; 555191783Srmacklem 556191783Srmacklem while (try--) { 557191783Srmacklem if (nfsheur[hi].nh_vp == vp) { 558191783Srmacklem nh = &nfsheur[hi]; 559191783Srmacklem break; 560191783Srmacklem } 561191783Srmacklem if (nfsheur[hi].nh_use > 0) 562191783Srmacklem --nfsheur[hi].nh_use; 563191783Srmacklem hi = (hi + 1) % NUM_HEURISTIC; 564191783Srmacklem if (nfsheur[hi].nh_use < nh->nh_use) 565191783Srmacklem nh = &nfsheur[hi]; 566191783Srmacklem } 567191783Srmacklem 568191783Srmacklem if (nh->nh_vp != vp) { 569191783Srmacklem nh->nh_vp = vp; 570191783Srmacklem nh->nh_nextr = off; 571191783Srmacklem nh->nh_use = NHUSE_INIT; 572191783Srmacklem if (off == 0) 573191783Srmacklem nh->nh_seqcount = 4; 574191783Srmacklem else 575191783Srmacklem nh->nh_seqcount = 1; 576191783Srmacklem } 577191783Srmacklem 578191783Srmacklem /* 579191783Srmacklem * Calculate heuristic 580191783Srmacklem */ 581191783Srmacklem 582191783Srmacklem if ((off == 0 && nh->nh_seqcount > 0) || off == nh->nh_nextr) { 583191783Srmacklem if (++nh->nh_seqcount > IO_SEQMAX) 584191783Srmacklem nh->nh_seqcount = IO_SEQMAX; 585191783Srmacklem } else if (nh->nh_seqcount > 1) { 586191783Srmacklem nh->nh_seqcount = 1; 587191783Srmacklem } else { 588191783Srmacklem nh->nh_seqcount = 0; 589191783Srmacklem } 590191783Srmacklem nh->nh_use += NHUSE_INC; 591191783Srmacklem if (nh->nh_use > NHUSE_MAX) 592191783Srmacklem nh->nh_use = NHUSE_MAX; 593191783Srmacklem ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 594191783Srmacklem 595191783Srmacklem len = left = NFSM_RNDUP(cnt); 596191783Srmacklem m3 = NULL; 597191783Srmacklem /* 598191783Srmacklem * Generate the mbuf list with the uio_iov ref. to it. 599191783Srmacklem */ 600191783Srmacklem i = 0; 601191783Srmacklem while (left > 0) { 602191783Srmacklem NFSMGET(m); 603191783Srmacklem MCLGET(m, M_WAIT); 604191783Srmacklem m->m_len = 0; 605191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 606191783Srmacklem left -= siz; 607191783Srmacklem i++; 608191783Srmacklem if (m3) 609191783Srmacklem m2->m_next = m; 610191783Srmacklem else 611191783Srmacklem m3 = m; 612191783Srmacklem m2 = m; 613191783Srmacklem } 614191783Srmacklem MALLOC(iv, struct iovec *, i * sizeof (struct iovec), 615191783Srmacklem M_TEMP, M_WAITOK); 616191783Srmacklem uiop->uio_iov = iv2 = iv; 617191783Srmacklem m = m3; 618191783Srmacklem left = len; 619191783Srmacklem i = 0; 620191783Srmacklem while (left > 0) { 621191783Srmacklem if (m == NULL) 622191783Srmacklem panic("nfsvno_read iov"); 623191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 624191783Srmacklem if (siz > 0) { 625191783Srmacklem iv->iov_base = mtod(m, caddr_t) + m->m_len; 626191783Srmacklem iv->iov_len = siz; 627191783Srmacklem m->m_len += siz; 628191783Srmacklem left -= siz; 629191783Srmacklem iv++; 630191783Srmacklem i++; 631191783Srmacklem } 632191783Srmacklem m = m->m_next; 633191783Srmacklem } 634191783Srmacklem uiop->uio_iovcnt = i; 635191783Srmacklem uiop->uio_offset = off; 636191783Srmacklem uiop->uio_resid = len; 637191783Srmacklem uiop->uio_rw = UIO_READ; 638191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 639191783Srmacklem error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 640191783Srmacklem FREE((caddr_t)iv2, M_TEMP); 641191783Srmacklem if (error) { 642191783Srmacklem m_freem(m3); 643191783Srmacklem *mpp = NULL; 644191783Srmacklem return (error); 645191783Srmacklem } 646191783Srmacklem tlen = len - uiop->uio_resid; 647191783Srmacklem cnt = cnt < tlen ? cnt : tlen; 648191783Srmacklem tlen = NFSM_RNDUP(cnt); 649191783Srmacklem if (tlen == 0) { 650191783Srmacklem m_freem(m3); 651191783Srmacklem m3 = NULL; 652191783Srmacklem } else if (len != tlen || tlen != cnt) 653191783Srmacklem nfsrv_adj(m3, len - tlen, tlen - cnt); 654191783Srmacklem *mpp = m3; 655191783Srmacklem *mpendp = m2; 656191783Srmacklem return (0); 657191783Srmacklem} 658191783Srmacklem 659191783Srmacklem/* 660191783Srmacklem * Write vnode op from an mbuf list. 661191783Srmacklem */ 662191783Srmacklemint 663191783Srmacklemnfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable, 664191783Srmacklem struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 665191783Srmacklem{ 666191783Srmacklem struct iovec *ivp; 667191783Srmacklem int i, len; 668191783Srmacklem struct iovec *iv; 669191783Srmacklem int ioflags, error; 670191783Srmacklem struct uio io, *uiop = &io; 671191783Srmacklem 672191783Srmacklem MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP, 673191783Srmacklem M_WAITOK); 674191783Srmacklem uiop->uio_iov = iv = ivp; 675191783Srmacklem uiop->uio_iovcnt = cnt; 676191783Srmacklem i = mtod(mp, caddr_t) + mp->m_len - cp; 677191783Srmacklem len = retlen; 678191783Srmacklem while (len > 0) { 679191783Srmacklem if (mp == NULL) 680191783Srmacklem panic("nfsvno_write"); 681191783Srmacklem if (i > 0) { 682191783Srmacklem i = min(i, len); 683191783Srmacklem ivp->iov_base = cp; 684191783Srmacklem ivp->iov_len = i; 685191783Srmacklem ivp++; 686191783Srmacklem len -= i; 687191783Srmacklem } 688191783Srmacklem mp = mp->m_next; 689191783Srmacklem if (mp) { 690191783Srmacklem i = mp->m_len; 691191783Srmacklem cp = mtod(mp, caddr_t); 692191783Srmacklem } 693191783Srmacklem } 694191783Srmacklem 695191783Srmacklem if (stable == NFSWRITE_UNSTABLE) 696191783Srmacklem ioflags = IO_NODELOCKED; 697191783Srmacklem else 698191783Srmacklem ioflags = (IO_SYNC | IO_NODELOCKED); 699191783Srmacklem uiop->uio_resid = retlen; 700191783Srmacklem uiop->uio_rw = UIO_WRITE; 701191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 702191783Srmacklem NFSUIOPROC(uiop, p); 703191783Srmacklem uiop->uio_offset = off; 704191783Srmacklem error = VOP_WRITE(vp, uiop, ioflags, cred); 705191783Srmacklem FREE((caddr_t)iv, M_TEMP); 706191783Srmacklem return (error); 707191783Srmacklem} 708191783Srmacklem 709191783Srmacklem/* 710191783Srmacklem * Common code for creating a regular file (plus special files for V2). 711191783Srmacklem */ 712191783Srmacklemint 713191783Srmacklemnfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 714191783Srmacklem struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 715199616Srmacklem int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp) 716191783Srmacklem{ 717191783Srmacklem u_quad_t tempsize; 718191783Srmacklem int error; 719191783Srmacklem 720191783Srmacklem error = nd->nd_repstat; 721191783Srmacklem if (!error && ndp->ni_vp == NULL) { 722191783Srmacklem if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 723191783Srmacklem vrele(ndp->ni_startdir); 724191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, 725191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 726191783Srmacklem vput(ndp->ni_dvp); 727191783Srmacklem nfsvno_relpathbuf(ndp); 728191783Srmacklem if (!error) { 729191783Srmacklem if (*exclusive_flagp) { 730191783Srmacklem *exclusive_flagp = 0; 731191783Srmacklem NFSVNO_ATTRINIT(nvap); 732199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 733199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 734191783Srmacklem error = VOP_SETATTR(ndp->ni_vp, 735191783Srmacklem &nvap->na_vattr, nd->nd_cred); 736191783Srmacklem } 737191783Srmacklem } 738191783Srmacklem /* 739191783Srmacklem * NFS V2 Only. nfsrvd_mknod() does this for V3. 740191783Srmacklem * (This implies, just get out on an error.) 741191783Srmacklem */ 742191783Srmacklem } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 743191783Srmacklem nvap->na_type == VFIFO) { 744191783Srmacklem if (nvap->na_type == VCHR && rdev == 0xffffffff) 745191783Srmacklem nvap->na_type = VFIFO; 746191783Srmacklem if (nvap->na_type != VFIFO && 747191783Srmacklem (error = priv_check_cred(nd->nd_cred, 748191783Srmacklem PRIV_VFS_MKNOD_DEV, 0))) { 749191783Srmacklem vrele(ndp->ni_startdir); 750191783Srmacklem nfsvno_relpathbuf(ndp); 751191783Srmacklem vput(ndp->ni_dvp); 752191783Srmacklem return (error); 753191783Srmacklem } 754191783Srmacklem nvap->na_rdev = rdev; 755191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 756191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 757191783Srmacklem vput(ndp->ni_dvp); 758191783Srmacklem nfsvno_relpathbuf(ndp); 759191783Srmacklem if (error) { 760191783Srmacklem vrele(ndp->ni_startdir); 761191783Srmacklem return (error); 762191783Srmacklem } 763191783Srmacklem } else { 764191783Srmacklem vrele(ndp->ni_startdir); 765191783Srmacklem nfsvno_relpathbuf(ndp); 766191783Srmacklem vput(ndp->ni_dvp); 767191783Srmacklem return (ENXIO); 768191783Srmacklem } 769191783Srmacklem *vpp = ndp->ni_vp; 770191783Srmacklem } else { 771191783Srmacklem /* 772191783Srmacklem * Handle cases where error is already set and/or 773191783Srmacklem * the file exists. 774191783Srmacklem * 1 - clean up the lookup 775191783Srmacklem * 2 - iff !error and na_size set, truncate it 776191783Srmacklem */ 777191783Srmacklem vrele(ndp->ni_startdir); 778191783Srmacklem nfsvno_relpathbuf(ndp); 779191783Srmacklem *vpp = ndp->ni_vp; 780191783Srmacklem if (ndp->ni_dvp == *vpp) 781191783Srmacklem vrele(ndp->ni_dvp); 782191783Srmacklem else 783191783Srmacklem vput(ndp->ni_dvp); 784191783Srmacklem if (!error && nvap->na_size != VNOVAL) { 785200999Srmacklem error = nfsvno_accchk(*vpp, VWRITE, 786191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 787200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 788191783Srmacklem if (!error) { 789191783Srmacklem tempsize = nvap->na_size; 790191783Srmacklem NFSVNO_ATTRINIT(nvap); 791191783Srmacklem nvap->na_size = tempsize; 792191783Srmacklem error = VOP_SETATTR(*vpp, 793191783Srmacklem &nvap->na_vattr, nd->nd_cred); 794191783Srmacklem } 795191783Srmacklem } 796191783Srmacklem if (error) 797191783Srmacklem vput(*vpp); 798191783Srmacklem } 799191783Srmacklem return (error); 800191783Srmacklem} 801191783Srmacklem 802191783Srmacklem/* 803191783Srmacklem * Do a mknod vnode op. 804191783Srmacklem */ 805191783Srmacklemint 806191783Srmacklemnfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, 807191783Srmacklem struct thread *p) 808191783Srmacklem{ 809191783Srmacklem int error = 0; 810191783Srmacklem enum vtype vtyp; 811191783Srmacklem 812191783Srmacklem vtyp = nvap->na_type; 813191783Srmacklem /* 814191783Srmacklem * Iff doesn't exist, create it. 815191783Srmacklem */ 816191783Srmacklem if (ndp->ni_vp) { 817191783Srmacklem vrele(ndp->ni_startdir); 818191783Srmacklem nfsvno_relpathbuf(ndp); 819191783Srmacklem vput(ndp->ni_dvp); 820191783Srmacklem vrele(ndp->ni_vp); 821191783Srmacklem return (EEXIST); 822191783Srmacklem } 823191783Srmacklem if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { 824191783Srmacklem vrele(ndp->ni_startdir); 825191783Srmacklem nfsvno_relpathbuf(ndp); 826191783Srmacklem vput(ndp->ni_dvp); 827191783Srmacklem return (NFSERR_BADTYPE); 828191783Srmacklem } 829191783Srmacklem if (vtyp == VSOCK) { 830191783Srmacklem vrele(ndp->ni_startdir); 831191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, 832191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 833191783Srmacklem vput(ndp->ni_dvp); 834191783Srmacklem nfsvno_relpathbuf(ndp); 835191783Srmacklem } else { 836191783Srmacklem if (nvap->na_type != VFIFO && 837191783Srmacklem (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) { 838191783Srmacklem vrele(ndp->ni_startdir); 839191783Srmacklem nfsvno_relpathbuf(ndp); 840191783Srmacklem vput(ndp->ni_dvp); 841191783Srmacklem return (error); 842191783Srmacklem } 843191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 844191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 845191783Srmacklem vput(ndp->ni_dvp); 846191783Srmacklem nfsvno_relpathbuf(ndp); 847191783Srmacklem if (error) 848191783Srmacklem vrele(ndp->ni_startdir); 849191783Srmacklem /* 850191783Srmacklem * Since VOP_MKNOD returns the ni_vp, I can't 851191783Srmacklem * see any reason to do the lookup. 852191783Srmacklem */ 853191783Srmacklem } 854191783Srmacklem return (error); 855191783Srmacklem} 856191783Srmacklem 857191783Srmacklem/* 858191783Srmacklem * Mkdir vnode op. 859191783Srmacklem */ 860191783Srmacklemint 861191783Srmacklemnfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, 862191783Srmacklem struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 863191783Srmacklem{ 864191783Srmacklem int error = 0; 865191783Srmacklem 866191783Srmacklem if (ndp->ni_vp != NULL) { 867191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 868191783Srmacklem vrele(ndp->ni_dvp); 869191783Srmacklem else 870191783Srmacklem vput(ndp->ni_dvp); 871191783Srmacklem vrele(ndp->ni_vp); 872206063Srmacklem nfsvno_relpathbuf(ndp); 873191783Srmacklem return (EEXIST); 874191783Srmacklem } 875191783Srmacklem error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 876191783Srmacklem &nvap->na_vattr); 877191783Srmacklem vput(ndp->ni_dvp); 878191783Srmacklem nfsvno_relpathbuf(ndp); 879191783Srmacklem return (error); 880191783Srmacklem} 881191783Srmacklem 882191783Srmacklem/* 883191783Srmacklem * symlink vnode op. 884191783Srmacklem */ 885191783Srmacklemint 886191783Srmacklemnfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, 887191783Srmacklem int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, 888191783Srmacklem struct nfsexstuff *exp) 889191783Srmacklem{ 890191783Srmacklem int error = 0; 891191783Srmacklem 892191783Srmacklem if (ndp->ni_vp) { 893191783Srmacklem vrele(ndp->ni_startdir); 894191783Srmacklem nfsvno_relpathbuf(ndp); 895191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 896191783Srmacklem vrele(ndp->ni_dvp); 897191783Srmacklem else 898191783Srmacklem vput(ndp->ni_dvp); 899191783Srmacklem vrele(ndp->ni_vp); 900191783Srmacklem return (EEXIST); 901191783Srmacklem } 902191783Srmacklem 903191783Srmacklem error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 904191783Srmacklem &nvap->na_vattr, pathcp); 905191783Srmacklem vput(ndp->ni_dvp); 906191783Srmacklem vrele(ndp->ni_startdir); 907191783Srmacklem nfsvno_relpathbuf(ndp); 908191783Srmacklem /* 909191783Srmacklem * Although FreeBSD still had the lookup code in 910191783Srmacklem * it for 7/current, there doesn't seem to be any 911191783Srmacklem * point, since VOP_SYMLINK() returns the ni_vp. 912191783Srmacklem * Just vput it for v2. 913191783Srmacklem */ 914191783Srmacklem if (!not_v2 && !error) 915191783Srmacklem vput(ndp->ni_vp); 916191783Srmacklem return (error); 917191783Srmacklem} 918191783Srmacklem 919191783Srmacklem/* 920191783Srmacklem * Parse symbolic link arguments. 921191783Srmacklem * This function has an ugly side effect. It will MALLOC() an area for 922191783Srmacklem * the symlink and set iov_base to point to it, only if it succeeds. 923191783Srmacklem * So, if it returns with uiop->uio_iov->iov_base != NULL, that must 924191783Srmacklem * be FREE'd later. 925191783Srmacklem */ 926191783Srmacklemint 927191783Srmacklemnfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, 928191783Srmacklem struct thread *p, char **pathcpp, int *lenp) 929191783Srmacklem{ 930191783Srmacklem u_int32_t *tl; 931191783Srmacklem char *pathcp = NULL; 932191783Srmacklem int error = 0, len; 933191783Srmacklem struct nfsv2_sattr *sp; 934191783Srmacklem 935191783Srmacklem *pathcpp = NULL; 936191783Srmacklem *lenp = 0; 937191783Srmacklem if ((nd->nd_flag & ND_NFSV3) && 938191783Srmacklem (error = nfsrv_sattr(nd, nvap, NULL, NULL, p))) 939191783Srmacklem goto nfsmout; 940191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 941191783Srmacklem len = fxdr_unsigned(int, *tl); 942191783Srmacklem if (len > NFS_MAXPATHLEN || len <= 0) { 943191783Srmacklem error = EBADRPC; 944191783Srmacklem goto nfsmout; 945191783Srmacklem } 946191783Srmacklem MALLOC(pathcp, caddr_t, len + 1, M_TEMP, M_WAITOK); 947191783Srmacklem error = nfsrv_mtostr(nd, pathcp, len); 948191783Srmacklem if (error) 949191783Srmacklem goto nfsmout; 950191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 951191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 952191783Srmacklem nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); 953191783Srmacklem } 954191783Srmacklem *pathcpp = pathcp; 955191783Srmacklem *lenp = len; 956191783Srmacklem return (0); 957191783Srmacklemnfsmout: 958191783Srmacklem if (pathcp) 959191783Srmacklem free(pathcp, M_TEMP); 960191783Srmacklem return (error); 961191783Srmacklem} 962191783Srmacklem 963191783Srmacklem/* 964191783Srmacklem * Remove a non-directory object. 965191783Srmacklem */ 966191783Srmacklemint 967191783Srmacklemnfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred, 968191783Srmacklem struct thread *p, struct nfsexstuff *exp) 969191783Srmacklem{ 970191783Srmacklem struct vnode *vp; 971191783Srmacklem int error = 0; 972191783Srmacklem 973191783Srmacklem vp = ndp->ni_vp; 974191783Srmacklem if (vp->v_type == VDIR) 975191783Srmacklem error = NFSERR_ISDIR; 976191783Srmacklem else if (is_v4) 977191783Srmacklem error = nfsrv_checkremove(vp, 1, p); 978191783Srmacklem if (!error) 979191783Srmacklem error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); 980191783Srmacklem if (ndp->ni_dvp == vp) 981191783Srmacklem vrele(ndp->ni_dvp); 982191783Srmacklem else 983191783Srmacklem vput(ndp->ni_dvp); 984191783Srmacklem vput(vp); 985191783Srmacklem return (error); 986191783Srmacklem} 987191783Srmacklem 988191783Srmacklem/* 989191783Srmacklem * Remove a directory. 990191783Srmacklem */ 991191783Srmacklemint 992191783Srmacklemnfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, 993191783Srmacklem struct thread *p, struct nfsexstuff *exp) 994191783Srmacklem{ 995191783Srmacklem struct vnode *vp; 996191783Srmacklem int error = 0; 997191783Srmacklem 998191783Srmacklem vp = ndp->ni_vp; 999191783Srmacklem if (vp->v_type != VDIR) { 1000191783Srmacklem error = ENOTDIR; 1001191783Srmacklem goto out; 1002191783Srmacklem } 1003191783Srmacklem /* 1004191783Srmacklem * No rmdir "." please. 1005191783Srmacklem */ 1006191783Srmacklem if (ndp->ni_dvp == vp) { 1007191783Srmacklem error = EINVAL; 1008191783Srmacklem goto out; 1009191783Srmacklem } 1010191783Srmacklem /* 1011191783Srmacklem * The root of a mounted filesystem cannot be deleted. 1012191783Srmacklem */ 1013191783Srmacklem if (vp->v_vflag & VV_ROOT) 1014191783Srmacklem error = EBUSY; 1015191783Srmacklemout: 1016191783Srmacklem if (!error) 1017191783Srmacklem error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); 1018191783Srmacklem if (ndp->ni_dvp == vp) 1019191783Srmacklem vrele(ndp->ni_dvp); 1020191783Srmacklem else 1021191783Srmacklem vput(ndp->ni_dvp); 1022191783Srmacklem vput(vp); 1023191783Srmacklem return (error); 1024191783Srmacklem} 1025191783Srmacklem 1026191783Srmacklem/* 1027191783Srmacklem * Rename vnode op. 1028191783Srmacklem */ 1029191783Srmacklemint 1030191783Srmacklemnfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, 1031191783Srmacklem u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p) 1032191783Srmacklem{ 1033191783Srmacklem struct vnode *fvp, *tvp, *tdvp; 1034191783Srmacklem int error = 0; 1035191783Srmacklem 1036191783Srmacklem fvp = fromndp->ni_vp; 1037191783Srmacklem if (ndstat) { 1038191783Srmacklem vrele(fromndp->ni_dvp); 1039191783Srmacklem vrele(fvp); 1040191783Srmacklem error = ndstat; 1041191783Srmacklem goto out1; 1042191783Srmacklem } 1043191783Srmacklem tdvp = tondp->ni_dvp; 1044191783Srmacklem tvp = tondp->ni_vp; 1045191783Srmacklem if (tvp != NULL) { 1046191783Srmacklem if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1047191783Srmacklem error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST; 1048191783Srmacklem goto out; 1049191783Srmacklem } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1050191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST; 1051191783Srmacklem goto out; 1052191783Srmacklem } 1053191783Srmacklem if (tvp->v_type == VDIR && tvp->v_mountedhere) { 1054191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1055191783Srmacklem goto out; 1056191783Srmacklem } 1057191783Srmacklem 1058191783Srmacklem /* 1059191783Srmacklem * A rename to '.' or '..' results in a prematurely 1060191783Srmacklem * unlocked vnode on FreeBSD5, so I'm just going to fail that 1061191783Srmacklem * here. 1062191783Srmacklem */ 1063191783Srmacklem if ((tondp->ni_cnd.cn_namelen == 1 && 1064191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.') || 1065191783Srmacklem (tondp->ni_cnd.cn_namelen == 2 && 1066191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.' && 1067191783Srmacklem tondp->ni_cnd.cn_nameptr[1] == '.')) { 1068191783Srmacklem error = EINVAL; 1069191783Srmacklem goto out; 1070191783Srmacklem } 1071191783Srmacklem } 1072191783Srmacklem if (fvp->v_type == VDIR && fvp->v_mountedhere) { 1073191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1074191783Srmacklem goto out; 1075191783Srmacklem } 1076191783Srmacklem if (fvp->v_mount != tdvp->v_mount) { 1077191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1078191783Srmacklem goto out; 1079191783Srmacklem } 1080191783Srmacklem if (fvp == tdvp) { 1081191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL; 1082191783Srmacklem goto out; 1083191783Srmacklem } 1084191783Srmacklem if (fvp == tvp) { 1085191783Srmacklem /* 1086191783Srmacklem * If source and destination are the same, there is nothing to 1087191783Srmacklem * do. Set error to -1 to indicate this. 1088191783Srmacklem */ 1089191783Srmacklem error = -1; 1090191783Srmacklem goto out; 1091191783Srmacklem } 1092191783Srmacklem if (ndflag & ND_NFSV4) { 1093191783Srmacklem NFSVOPLOCK(fvp, LK_EXCLUSIVE | LK_RETRY, p); 1094191783Srmacklem error = nfsrv_checkremove(fvp, 0, p); 1095191783Srmacklem NFSVOPUNLOCK(fvp, 0, p); 1096191783Srmacklem if (tvp && !error) 1097191783Srmacklem error = nfsrv_checkremove(tvp, 1, p); 1098191783Srmacklem } else { 1099191783Srmacklem /* 1100191783Srmacklem * For NFSv2 and NFSv3, try to get rid of the delegation, so 1101191783Srmacklem * that the NFSv4 client won't be confused by the rename. 1102191783Srmacklem * Since nfsd_recalldelegation() can only be called on an 1103191783Srmacklem * unlocked vnode at this point and fvp is the file that will 1104191783Srmacklem * still exist after the rename, just do fvp. 1105191783Srmacklem */ 1106191783Srmacklem nfsd_recalldelegation(fvp, p); 1107191783Srmacklem } 1108191783Srmacklemout: 1109191783Srmacklem if (!error) { 1110191783Srmacklem error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, 1111191783Srmacklem &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, 1112191783Srmacklem &tondp->ni_cnd); 1113191783Srmacklem } else { 1114191783Srmacklem if (tdvp == tvp) 1115191783Srmacklem vrele(tdvp); 1116191783Srmacklem else 1117191783Srmacklem vput(tdvp); 1118191783Srmacklem if (tvp) 1119191783Srmacklem vput(tvp); 1120191783Srmacklem vrele(fromndp->ni_dvp); 1121191783Srmacklem vrele(fvp); 1122191783Srmacklem if (error == -1) 1123191783Srmacklem error = 0; 1124191783Srmacklem } 1125191783Srmacklem vrele(tondp->ni_startdir); 1126191783Srmacklem nfsvno_relpathbuf(tondp); 1127191783Srmacklemout1: 1128191783Srmacklem vrele(fromndp->ni_startdir); 1129191783Srmacklem nfsvno_relpathbuf(fromndp); 1130191783Srmacklem return (error); 1131191783Srmacklem} 1132191783Srmacklem 1133191783Srmacklem/* 1134191783Srmacklem * Link vnode op. 1135191783Srmacklem */ 1136191783Srmacklemint 1137191783Srmacklemnfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred, 1138191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1139191783Srmacklem{ 1140191783Srmacklem struct vnode *xp; 1141191783Srmacklem int error = 0; 1142191783Srmacklem 1143191783Srmacklem xp = ndp->ni_vp; 1144191783Srmacklem if (xp != NULL) { 1145191783Srmacklem error = EEXIST; 1146191783Srmacklem } else { 1147191783Srmacklem xp = ndp->ni_dvp; 1148191783Srmacklem if (vp->v_mount != xp->v_mount) 1149191783Srmacklem error = EXDEV; 1150191783Srmacklem } 1151191783Srmacklem if (!error) { 1152191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 1153191783Srmacklem error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); 1154191783Srmacklem if (ndp->ni_dvp == vp) 1155191783Srmacklem vrele(ndp->ni_dvp); 1156191783Srmacklem else 1157191783Srmacklem vput(ndp->ni_dvp); 1158191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 1159191783Srmacklem } else { 1160191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1161191783Srmacklem vrele(ndp->ni_dvp); 1162191783Srmacklem else 1163191783Srmacklem vput(ndp->ni_dvp); 1164191783Srmacklem if (ndp->ni_vp) 1165191783Srmacklem vrele(ndp->ni_vp); 1166191783Srmacklem } 1167191783Srmacklem nfsvno_relpathbuf(ndp); 1168191783Srmacklem return (error); 1169191783Srmacklem} 1170191783Srmacklem 1171191783Srmacklem/* 1172191783Srmacklem * Do the fsync() appropriate for the commit. 1173191783Srmacklem */ 1174191783Srmacklemint 1175191783Srmacklemnfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, 1176191783Srmacklem struct thread *td) 1177191783Srmacklem{ 1178191783Srmacklem int error = 0; 1179191783Srmacklem 1180191783Srmacklem if (cnt > MAX_COMMIT_COUNT) { 1181191783Srmacklem /* 1182191783Srmacklem * Give up and do the whole thing 1183191783Srmacklem */ 1184191783Srmacklem if (vp->v_object && 1185191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1186191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1187191783Srmacklem vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC); 1188191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1189191783Srmacklem } 1190191783Srmacklem error = VOP_FSYNC(vp, MNT_WAIT, td); 1191191783Srmacklem } else { 1192191783Srmacklem /* 1193191783Srmacklem * Locate and synchronously write any buffers that fall 1194191783Srmacklem * into the requested range. Note: we are assuming that 1195191783Srmacklem * f_iosize is a power of 2. 1196191783Srmacklem */ 1197191783Srmacklem int iosize = vp->v_mount->mnt_stat.f_iosize; 1198191783Srmacklem int iomask = iosize - 1; 1199191783Srmacklem struct bufobj *bo; 1200191783Srmacklem daddr_t lblkno; 1201191783Srmacklem 1202191783Srmacklem /* 1203191783Srmacklem * Align to iosize boundry, super-align to page boundry. 1204191783Srmacklem */ 1205191783Srmacklem if (off & iomask) { 1206191783Srmacklem cnt += off & iomask; 1207191783Srmacklem off &= ~(u_quad_t)iomask; 1208191783Srmacklem } 1209191783Srmacklem if (off & PAGE_MASK) { 1210191783Srmacklem cnt += off & PAGE_MASK; 1211191783Srmacklem off &= ~(u_quad_t)PAGE_MASK; 1212191783Srmacklem } 1213191783Srmacklem lblkno = off / iosize; 1214191783Srmacklem 1215191783Srmacklem if (vp->v_object && 1216191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1217191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1218191783Srmacklem vm_object_page_clean(vp->v_object, off / PAGE_SIZE, (cnt + PAGE_MASK) / PAGE_SIZE, OBJPC_SYNC); 1219191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1220191783Srmacklem } 1221191783Srmacklem 1222191783Srmacklem bo = &vp->v_bufobj; 1223191783Srmacklem BO_LOCK(bo); 1224191783Srmacklem while (cnt > 0) { 1225191783Srmacklem struct buf *bp; 1226191783Srmacklem 1227191783Srmacklem /* 1228191783Srmacklem * If we have a buffer and it is marked B_DELWRI we 1229191783Srmacklem * have to lock and write it. Otherwise the prior 1230191783Srmacklem * write is assumed to have already been committed. 1231191783Srmacklem * 1232191783Srmacklem * gbincore() can return invalid buffers now so we 1233191783Srmacklem * have to check that bit as well (though B_DELWRI 1234191783Srmacklem * should not be set if B_INVAL is set there could be 1235191783Srmacklem * a race here since we haven't locked the buffer). 1236191783Srmacklem */ 1237191783Srmacklem if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { 1238191783Srmacklem if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | 1239191783Srmacklem LK_INTERLOCK, BO_MTX(bo)) == ENOLCK) { 1240191783Srmacklem BO_LOCK(bo); 1241191783Srmacklem continue; /* retry */ 1242191783Srmacklem } 1243191783Srmacklem if ((bp->b_flags & (B_DELWRI|B_INVAL)) == 1244191783Srmacklem B_DELWRI) { 1245191783Srmacklem bremfree(bp); 1246191783Srmacklem bp->b_flags &= ~B_ASYNC; 1247191783Srmacklem bwrite(bp); 1248191783Srmacklem ++nfs_commit_miss; 1249191783Srmacklem } else 1250191783Srmacklem BUF_UNLOCK(bp); 1251191783Srmacklem BO_LOCK(bo); 1252191783Srmacklem } 1253191783Srmacklem ++nfs_commit_blks; 1254191783Srmacklem if (cnt < iosize) 1255191783Srmacklem break; 1256191783Srmacklem cnt -= iosize; 1257191783Srmacklem ++lblkno; 1258191783Srmacklem } 1259191783Srmacklem BO_UNLOCK(bo); 1260191783Srmacklem } 1261191783Srmacklem return (error); 1262191783Srmacklem} 1263191783Srmacklem 1264191783Srmacklem/* 1265191783Srmacklem * Statfs vnode op. 1266191783Srmacklem */ 1267191783Srmacklemint 1268191990Sattilionfsvno_statfs(struct vnode *vp, struct statfs *sf) 1269191783Srmacklem{ 1270191783Srmacklem 1271191990Sattilio return (VFS_STATFS(vp->v_mount, sf)); 1272191783Srmacklem} 1273191783Srmacklem 1274191783Srmacklem/* 1275191783Srmacklem * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1276191783Srmacklem * must handle nfsrv_opencheck() calls after any other access checks. 1277191783Srmacklem */ 1278191783Srmacklemvoid 1279191783Srmacklemnfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1280191783Srmacklem nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1281199616Srmacklem int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, 1282191783Srmacklem NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p, 1283191783Srmacklem struct nfsexstuff *exp, struct vnode **vpp) 1284191783Srmacklem{ 1285191783Srmacklem struct vnode *vp = NULL; 1286191783Srmacklem u_quad_t tempsize; 1287191783Srmacklem struct nfsexstuff nes; 1288191783Srmacklem 1289191783Srmacklem if (ndp->ni_vp == NULL) 1290191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1291191783Srmacklem stateidp, stp, NULL, nd, p, nd->nd_repstat); 1292191783Srmacklem if (!nd->nd_repstat) { 1293191783Srmacklem if (ndp->ni_vp == NULL) { 1294191783Srmacklem vrele(ndp->ni_startdir); 1295191783Srmacklem nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1296191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1297191783Srmacklem vput(ndp->ni_dvp); 1298191783Srmacklem nfsvno_relpathbuf(ndp); 1299191783Srmacklem if (!nd->nd_repstat) { 1300191783Srmacklem if (*exclusive_flagp) { 1301191783Srmacklem *exclusive_flagp = 0; 1302191783Srmacklem NFSVNO_ATTRINIT(nvap); 1303199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 1304199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 1305191783Srmacklem nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1306191783Srmacklem &nvap->na_vattr, cred); 1307191783Srmacklem } else { 1308191783Srmacklem nfsrv_fixattr(nd, ndp->ni_vp, nvap, 1309191783Srmacklem aclp, p, attrbitp, exp); 1310191783Srmacklem } 1311191783Srmacklem } 1312191783Srmacklem vp = ndp->ni_vp; 1313191783Srmacklem } else { 1314191783Srmacklem if (ndp->ni_startdir) 1315191783Srmacklem vrele(ndp->ni_startdir); 1316191783Srmacklem nfsvno_relpathbuf(ndp); 1317191783Srmacklem vp = ndp->ni_vp; 1318191783Srmacklem if (create == NFSV4OPEN_CREATE) { 1319191783Srmacklem if (ndp->ni_dvp == vp) 1320191783Srmacklem vrele(ndp->ni_dvp); 1321191783Srmacklem else 1322191783Srmacklem vput(ndp->ni_dvp); 1323191783Srmacklem } 1324191783Srmacklem if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 1325191783Srmacklem if (ndp->ni_cnd.cn_flags & RDONLY) 1326191783Srmacklem NFSVNO_SETEXRDONLY(&nes); 1327191783Srmacklem else 1328191783Srmacklem NFSVNO_EXINIT(&nes); 1329191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, 1330200999Srmacklem VWRITE, cred, &nes, p, 1331200999Srmacklem NFSACCCHK_NOOVERRIDE, 1332200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1333191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1334191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1335191783Srmacklem if (!nd->nd_repstat) { 1336191783Srmacklem tempsize = nvap->na_size; 1337191783Srmacklem NFSVNO_ATTRINIT(nvap); 1338191783Srmacklem nvap->na_size = tempsize; 1339191783Srmacklem nd->nd_repstat = VOP_SETATTR(vp, 1340191783Srmacklem &nvap->na_vattr, cred); 1341191783Srmacklem } 1342191783Srmacklem } else if (vp->v_type == VREG) { 1343191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1344191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1345191783Srmacklem } 1346191783Srmacklem } 1347191783Srmacklem } else { 1348191783Srmacklem if (ndp->ni_cnd.cn_flags & HASBUF) 1349191783Srmacklem nfsvno_relpathbuf(ndp); 1350191783Srmacklem if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) { 1351191783Srmacklem vrele(ndp->ni_startdir); 1352191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1353191783Srmacklem vrele(ndp->ni_dvp); 1354191783Srmacklem else 1355191783Srmacklem vput(ndp->ni_dvp); 1356191783Srmacklem if (ndp->ni_vp) 1357191783Srmacklem vput(ndp->ni_vp); 1358191783Srmacklem } 1359191783Srmacklem } 1360191783Srmacklem *vpp = vp; 1361191783Srmacklem} 1362191783Srmacklem 1363191783Srmacklem/* 1364191783Srmacklem * Updates the file rev and sets the mtime and ctime 1365191783Srmacklem * to the current clock time, returning the va_filerev and va_Xtime 1366191783Srmacklem * values. 1367191783Srmacklem */ 1368191783Srmacklemvoid 1369191783Srmacklemnfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 1370191783Srmacklem struct ucred *cred, struct thread *p) 1371191783Srmacklem{ 1372191783Srmacklem struct vattr va; 1373191783Srmacklem 1374191783Srmacklem VATTR_NULL(&va); 1375191783Srmacklem getnanotime(&va.va_mtime); 1376191783Srmacklem (void) VOP_SETATTR(vp, &va, cred); 1377191783Srmacklem (void) nfsvno_getattr(vp, nvap, cred, p); 1378191783Srmacklem} 1379191783Srmacklem 1380191783Srmacklem/* 1381191783Srmacklem * Glue routine to nfsv4_fillattr(). 1382191783Srmacklem */ 1383191783Srmacklemint 1384191783Srmacklemnfsvno_fillattr(struct nfsrv_descript *nd, struct vnode *vp, 1385191783Srmacklem struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 1386191783Srmacklem struct ucred *cred, struct thread *p, int isdgram, int reterr) 1387191783Srmacklem{ 1388191783Srmacklem int error; 1389191783Srmacklem 1390191783Srmacklem error = nfsv4_fillattr(nd, vp, NULL, &nvap->na_vattr, fhp, rderror, 1391191783Srmacklem attrbitp, cred, p, isdgram, reterr); 1392191783Srmacklem return (error); 1393191783Srmacklem} 1394191783Srmacklem 1395191783Srmacklem/* Since the Readdir vnode ops vary, put the entire functions in here. */ 1396191783Srmacklem/* 1397191783Srmacklem * nfs readdir service 1398191783Srmacklem * - mallocs what it thinks is enough to read 1399191783Srmacklem * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 1400206170Srmacklem * - calls VOP_READDIR() 1401191783Srmacklem * - loops around building the reply 1402191783Srmacklem * if the output generated exceeds count break out of loop 1403191783Srmacklem * The NFSM_CLGET macro is used here so that the reply will be packed 1404191783Srmacklem * tightly in mbuf clusters. 1405191783Srmacklem * - it trims out records with d_fileno == 0 1406191783Srmacklem * this doesn't matter for Unix clients, but they might confuse clients 1407191783Srmacklem * for other os'. 1408191783Srmacklem * - it trims out records with d_type == DT_WHT 1409191783Srmacklem * these cannot be seen through NFS (unless we extend the protocol) 1410191783Srmacklem * The alternate call nfsrvd_readdirplus() does lookups as well. 1411191783Srmacklem * PS: The NFS protocol spec. does not clarify what the "count" byte 1412191783Srmacklem * argument is a count of.. just name strings and file id's or the 1413191783Srmacklem * entire reply rpc or ... 1414191783Srmacklem * I tried just file name and id sizes and it confused the Sun client, 1415191783Srmacklem * so I am using the full rpc size now. The "paranoia.." comment refers 1416191783Srmacklem * to including the status longwords that are not a part of the dir. 1417191783Srmacklem * "entry" structures, but are in the rpc. 1418191783Srmacklem */ 1419191783Srmacklemint 1420191783Srmacklemnfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 1421191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1422191783Srmacklem{ 1423191783Srmacklem struct dirent *dp; 1424191783Srmacklem u_int32_t *tl; 1425191783Srmacklem int dirlen; 1426191783Srmacklem char *cpos, *cend, *rbuf; 1427191783Srmacklem struct nfsvattr at; 1428191783Srmacklem int nlen, error = 0, getret = 1; 1429191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies; 1430191783Srmacklem u_int64_t off, toff, verf; 1431191783Srmacklem u_long *cookies = NULL, *cookiep; 1432191783Srmacklem struct uio io; 1433191783Srmacklem struct iovec iv; 1434191783Srmacklem 1435191783Srmacklem if (nd->nd_repstat) { 1436191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1437191783Srmacklem return (0); 1438191783Srmacklem } 1439191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1440191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1441191783Srmacklem off = fxdr_unsigned(u_quad_t, *tl++); 1442191783Srmacklem } else { 1443191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1444191783Srmacklem off = fxdr_hyper(tl); 1445191783Srmacklem tl += 2; 1446191783Srmacklem verf = fxdr_hyper(tl); 1447191783Srmacklem tl += 2; 1448191783Srmacklem } 1449191783Srmacklem toff = off; 1450191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1451206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1452191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1453191783Srmacklem siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1454191783Srmacklem fullsiz = siz; 1455191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1456191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, 1457191783Srmacklem p); 1458191783Srmacklem#if 0 1459191783Srmacklem /* 1460191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1461191783Srmacklem * since it is not supposed to change when entries are 1462191783Srmacklem * removed/added unless that offset cookies returned to 1463191783Srmacklem * the client are no longer valid. 1464191783Srmacklem */ 1465191783Srmacklem if (!nd->nd_repstat && toff && verf != at.na_filerev) 1466191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1467191783Srmacklem#endif 1468191783Srmacklem } 1469206170Srmacklem if (nd->nd_repstat == 0 && cnt == 0) { 1470206170Srmacklem if (nd->nd_flag & ND_NFSV2) 1471206170Srmacklem /* NFSv2 does not have NFSERR_TOOSMALL */ 1472206170Srmacklem nd->nd_repstat = EPERM; 1473206170Srmacklem else 1474206170Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1475206170Srmacklem } 1476191783Srmacklem if (!nd->nd_repstat) 1477200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1478191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1479200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1480191783Srmacklem if (nd->nd_repstat) { 1481191783Srmacklem vput(vp); 1482191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1483191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1484191783Srmacklem return (0); 1485191783Srmacklem } 1486191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 1487191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1488191783Srmacklemagain: 1489191783Srmacklem eofflag = 0; 1490191783Srmacklem if (cookies) { 1491191783Srmacklem free((caddr_t)cookies, M_TEMP); 1492191783Srmacklem cookies = NULL; 1493191783Srmacklem } 1494191783Srmacklem 1495191783Srmacklem iv.iov_base = rbuf; 1496191783Srmacklem iv.iov_len = siz; 1497191783Srmacklem io.uio_iov = &iv; 1498191783Srmacklem io.uio_iovcnt = 1; 1499191783Srmacklem io.uio_offset = (off_t)off; 1500191783Srmacklem io.uio_resid = siz; 1501191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1502191783Srmacklem io.uio_rw = UIO_READ; 1503191783Srmacklem io.uio_td = NULL; 1504191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 1505191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1506191783Srmacklem &cookies); 1507191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 1508191783Srmacklem off = (u_int64_t)io.uio_offset; 1509191783Srmacklem if (io.uio_resid) 1510191783Srmacklem siz -= io.uio_resid; 1511191783Srmacklem 1512191783Srmacklem if (!cookies && !nd->nd_repstat) 1513191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1514191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1515191783Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p); 1516191783Srmacklem if (!nd->nd_repstat) 1517191783Srmacklem nd->nd_repstat = getret; 1518191783Srmacklem } 1519191783Srmacklem 1520191783Srmacklem /* 1521191783Srmacklem * Handles the failed cases. nd->nd_repstat == 0 past here. 1522191783Srmacklem */ 1523191783Srmacklem if (nd->nd_repstat) { 1524191783Srmacklem vrele(vp); 1525191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1526191783Srmacklem if (cookies) 1527191783Srmacklem free((caddr_t)cookies, M_TEMP); 1528191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1529191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1530191783Srmacklem return (0); 1531191783Srmacklem } 1532191783Srmacklem /* 1533191783Srmacklem * If nothing read, return eof 1534191783Srmacklem * rpc reply 1535191783Srmacklem */ 1536191783Srmacklem if (siz == 0) { 1537191783Srmacklem vrele(vp); 1538191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1539191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1540191783Srmacklem } else { 1541191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1542191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1543191783Srmacklem txdr_hyper(at.na_filerev, tl); 1544191783Srmacklem tl += 2; 1545191783Srmacklem } 1546191783Srmacklem *tl++ = newnfs_false; 1547191783Srmacklem *tl = newnfs_true; 1548191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1549191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1550191783Srmacklem return (0); 1551191783Srmacklem } 1552191783Srmacklem 1553191783Srmacklem /* 1554191783Srmacklem * Check for degenerate cases of nothing useful read. 1555191783Srmacklem * If so go try again 1556191783Srmacklem */ 1557191783Srmacklem cpos = rbuf; 1558191783Srmacklem cend = rbuf + siz; 1559191783Srmacklem dp = (struct dirent *)cpos; 1560191783Srmacklem cookiep = cookies; 1561191783Srmacklem 1562191783Srmacklem /* 1563191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1564191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1565191783Srmacklem * skip over the records that precede the requested offset. This 1566191783Srmacklem * requires the assumption that file offset cookies monotonically 1567191783Srmacklem * increase. 1568191783Srmacklem */ 1569191783Srmacklem while (cpos < cend && ncookies > 0 && 1570191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1571191783Srmacklem ((u_quad_t)(*cookiep)) <= toff)) { 1572191783Srmacklem cpos += dp->d_reclen; 1573191783Srmacklem dp = (struct dirent *)cpos; 1574191783Srmacklem cookiep++; 1575191783Srmacklem ncookies--; 1576191783Srmacklem } 1577191783Srmacklem if (cpos >= cend || ncookies == 0) { 1578191783Srmacklem siz = fullsiz; 1579191783Srmacklem toff = off; 1580191783Srmacklem goto again; 1581191783Srmacklem } 1582191783Srmacklem 1583191783Srmacklem /* 1584191783Srmacklem * dirlen is the size of the reply, including all XDR and must 1585191783Srmacklem * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 1586191783Srmacklem * if the XDR should be included in "count", but to be safe, we do. 1587191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now.) 1588191783Srmacklem */ 1589191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1590191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1591191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1592191783Srmacklem txdr_hyper(at.na_filerev, tl); 1593191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1594191783Srmacklem } else { 1595191783Srmacklem dirlen = 2 * NFSX_UNSIGNED; 1596191783Srmacklem } 1597191783Srmacklem 1598191783Srmacklem /* Loop through the records and build reply */ 1599191783Srmacklem while (cpos < cend && ncookies > 0) { 1600191783Srmacklem nlen = dp->d_namlen; 1601191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1602191783Srmacklem nlen <= NFS_MAXNAMLEN) { 1603191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1604191783Srmacklem dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1605191783Srmacklem else 1606191783Srmacklem dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1607191783Srmacklem if (dirlen > cnt) { 1608191783Srmacklem eofflag = 0; 1609191783Srmacklem break; 1610191783Srmacklem } 1611191783Srmacklem 1612191783Srmacklem /* 1613191783Srmacklem * Build the directory record xdr from 1614191783Srmacklem * the dirent entry. 1615191783Srmacklem */ 1616191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1617191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1618191783Srmacklem *tl++ = newnfs_true; 1619191783Srmacklem *tl++ = 0; 1620191783Srmacklem } else { 1621191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1622191783Srmacklem *tl++ = newnfs_true; 1623191783Srmacklem } 1624191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1625191783Srmacklem (void) nfsm_strtom(nd, dp->d_name, nlen); 1626191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1627191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1628191783Srmacklem *tl++ = 0; 1629191783Srmacklem } else 1630191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1631191783Srmacklem *tl = txdr_unsigned(*cookiep); 1632191783Srmacklem } 1633191783Srmacklem cpos += dp->d_reclen; 1634191783Srmacklem dp = (struct dirent *)cpos; 1635191783Srmacklem cookiep++; 1636191783Srmacklem ncookies--; 1637191783Srmacklem } 1638191783Srmacklem if (cpos < cend) 1639191783Srmacklem eofflag = 0; 1640191783Srmacklem vrele(vp); 1641191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1642191783Srmacklem *tl++ = newnfs_false; 1643191783Srmacklem if (eofflag) 1644191783Srmacklem *tl = newnfs_true; 1645191783Srmacklem else 1646191783Srmacklem *tl = newnfs_false; 1647191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1648191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1649191783Srmacklem return (0); 1650191783Srmacklemnfsmout: 1651191783Srmacklem vput(vp); 1652191783Srmacklem return (error); 1653191783Srmacklem} 1654191783Srmacklem 1655191783Srmacklem/* 1656191783Srmacklem * Readdirplus for V3 and Readdir for V4. 1657191783Srmacklem */ 1658191783Srmacklemint 1659191783Srmacklemnfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 1660191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1661191783Srmacklem{ 1662191783Srmacklem struct dirent *dp; 1663191783Srmacklem u_int32_t *tl; 1664191783Srmacklem int dirlen; 1665191783Srmacklem char *cpos, *cend, *rbuf; 1666191783Srmacklem struct vnode *nvp; 1667191783Srmacklem fhandle_t nfh; 1668191783Srmacklem struct nfsvattr nva, at, *nvap = &nva; 1669191783Srmacklem struct mbuf *mb0, *mb1; 1670191783Srmacklem struct nfsreferral *refp; 1671199715Srmacklem int nlen, r, error = 0, getret = 1, usevget = 1; 1672191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 1673191783Srmacklem caddr_t bpos0, bpos1; 1674191783Srmacklem u_int64_t off, toff, verf; 1675191783Srmacklem u_long *cookies = NULL, *cookiep; 1676191783Srmacklem nfsattrbit_t attrbits, rderrbits, savbits; 1677191783Srmacklem struct uio io; 1678191783Srmacklem struct iovec iv; 1679199715Srmacklem struct componentname cn; 1680191783Srmacklem 1681191783Srmacklem if (nd->nd_repstat) { 1682191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1683191783Srmacklem return (0); 1684191783Srmacklem } 1685191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 1686191783Srmacklem off = fxdr_hyper(tl); 1687191783Srmacklem toff = off; 1688191783Srmacklem tl += 2; 1689191783Srmacklem verf = fxdr_hyper(tl); 1690191783Srmacklem tl += 2; 1691191783Srmacklem siz = fxdr_unsigned(int, *tl++); 1692191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1693191783Srmacklem 1694191783Srmacklem /* 1695191783Srmacklem * Use the server's maximum data transfer size as the upper bound 1696191783Srmacklem * on reply datalen. 1697191783Srmacklem */ 1698206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1699191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1700191783Srmacklem 1701191783Srmacklem /* 1702191783Srmacklem * siz is a "hint" of how much directory information (name, fileid, 1703191783Srmacklem * cookie) should be in the reply. At least one client "hints" 0, 1704191783Srmacklem * so I set it to cnt for that case. I also round it up to the 1705191783Srmacklem * next multiple of DIRBLKSIZ. 1706191783Srmacklem */ 1707206170Srmacklem if (siz <= 0) 1708191783Srmacklem siz = cnt; 1709191783Srmacklem siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1710191783Srmacklem 1711191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1712191783Srmacklem error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1713191783Srmacklem if (error) 1714191783Srmacklem goto nfsmout; 1715191783Srmacklem NFSSET_ATTRBIT(&savbits, &attrbits); 1716191783Srmacklem NFSCLRNOTFILLABLE_ATTRBIT(&attrbits); 1717191783Srmacklem NFSZERO_ATTRBIT(&rderrbits); 1718191783Srmacklem NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 1719191783Srmacklem } else { 1720191783Srmacklem NFSZERO_ATTRBIT(&attrbits); 1721191783Srmacklem } 1722191783Srmacklem fullsiz = siz; 1723191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p); 1724191783Srmacklem if (!nd->nd_repstat) { 1725191783Srmacklem if (off && verf != at.na_filerev) { 1726191783Srmacklem /* 1727191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1728191783Srmacklem * since it is not supposed to change when entries are 1729191783Srmacklem * removed/added unless that offset cookies returned to 1730191783Srmacklem * the client are no longer valid. 1731191783Srmacklem */ 1732191783Srmacklem#if 0 1733191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1734191783Srmacklem nd->nd_repstat = NFSERR_NOTSAME; 1735191783Srmacklem } else { 1736191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1737191783Srmacklem } 1738191783Srmacklem#endif 1739191783Srmacklem } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) { 1740191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1741191783Srmacklem } 1742191783Srmacklem } 1743191783Srmacklem if (!nd->nd_repstat && vp->v_type != VDIR) 1744191783Srmacklem nd->nd_repstat = NFSERR_NOTDIR; 1745191783Srmacklem if (!nd->nd_repstat && cnt == 0) 1746191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1747191783Srmacklem if (!nd->nd_repstat) 1748200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1749191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1750200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1751191783Srmacklem if (nd->nd_repstat) { 1752191783Srmacklem vput(vp); 1753191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1754191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1755191783Srmacklem return (0); 1756191783Srmacklem } 1757191783Srmacklem 1758191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1759191783Srmacklemagain: 1760191783Srmacklem eofflag = 0; 1761191783Srmacklem if (cookies) { 1762191783Srmacklem free((caddr_t)cookies, M_TEMP); 1763191783Srmacklem cookies = NULL; 1764191783Srmacklem } 1765191783Srmacklem 1766191783Srmacklem iv.iov_base = rbuf; 1767191783Srmacklem iv.iov_len = siz; 1768191783Srmacklem io.uio_iov = &iv; 1769191783Srmacklem io.uio_iovcnt = 1; 1770191783Srmacklem io.uio_offset = (off_t)off; 1771191783Srmacklem io.uio_resid = siz; 1772191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1773191783Srmacklem io.uio_rw = UIO_READ; 1774191783Srmacklem io.uio_td = NULL; 1775191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1776191783Srmacklem &cookies); 1777191783Srmacklem off = (u_int64_t)io.uio_offset; 1778191783Srmacklem if (io.uio_resid) 1779191783Srmacklem siz -= io.uio_resid; 1780191783Srmacklem 1781191783Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p); 1782191783Srmacklem 1783191783Srmacklem if (!cookies && !nd->nd_repstat) 1784191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1785191783Srmacklem if (!nd->nd_repstat) 1786191783Srmacklem nd->nd_repstat = getret; 1787191783Srmacklem if (nd->nd_repstat) { 1788199715Srmacklem vput(vp); 1789191783Srmacklem if (cookies) 1790191783Srmacklem free((caddr_t)cookies, M_TEMP); 1791191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1792191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1793191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1794191783Srmacklem return (0); 1795191783Srmacklem } 1796191783Srmacklem /* 1797191783Srmacklem * If nothing read, return eof 1798191783Srmacklem * rpc reply 1799191783Srmacklem */ 1800191783Srmacklem if (siz == 0) { 1801199715Srmacklem vput(vp); 1802191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1803191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1804191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1805191783Srmacklem txdr_hyper(at.na_filerev, tl); 1806191783Srmacklem tl += 2; 1807191783Srmacklem *tl++ = newnfs_false; 1808191783Srmacklem *tl = newnfs_true; 1809191783Srmacklem free((caddr_t)cookies, M_TEMP); 1810191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1811191783Srmacklem return (0); 1812191783Srmacklem } 1813191783Srmacklem 1814191783Srmacklem /* 1815191783Srmacklem * Check for degenerate cases of nothing useful read. 1816191783Srmacklem * If so go try again 1817191783Srmacklem */ 1818191783Srmacklem cpos = rbuf; 1819191783Srmacklem cend = rbuf + siz; 1820191783Srmacklem dp = (struct dirent *)cpos; 1821191783Srmacklem cookiep = cookies; 1822191783Srmacklem 1823191783Srmacklem /* 1824191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1825191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1826191783Srmacklem * skip over the records that precede the requested offset. This 1827191783Srmacklem * requires the assumption that file offset cookies monotonically 1828191783Srmacklem * increase. 1829191783Srmacklem */ 1830191783Srmacklem while (cpos < cend && ncookies > 0 && 1831191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1832191783Srmacklem ((u_quad_t)(*cookiep)) <= toff || 1833191783Srmacklem ((nd->nd_flag & ND_NFSV4) && 1834191783Srmacklem ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 1835191783Srmacklem (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 1836191783Srmacklem cpos += dp->d_reclen; 1837191783Srmacklem dp = (struct dirent *)cpos; 1838191783Srmacklem cookiep++; 1839191783Srmacklem ncookies--; 1840191783Srmacklem } 1841191783Srmacklem if (cpos >= cend || ncookies == 0) { 1842191783Srmacklem siz = fullsiz; 1843191783Srmacklem toff = off; 1844191783Srmacklem goto again; 1845191783Srmacklem } 1846199715Srmacklem NFSVOPUNLOCK(vp, 0, p); 1847191783Srmacklem 1848191783Srmacklem /* 1849191783Srmacklem * Save this position, in case there is an error before one entry 1850191783Srmacklem * is created. 1851191783Srmacklem */ 1852191783Srmacklem mb0 = nd->nd_mb; 1853191783Srmacklem bpos0 = nd->nd_bpos; 1854191783Srmacklem 1855191783Srmacklem /* 1856191783Srmacklem * Fill in the first part of the reply. 1857191783Srmacklem * dirlen is the reply length in bytes and cannot exceed cnt. 1858191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now, 1859191783Srmacklem * so we recognize when we have exceeded cnt.) 1860191783Srmacklem */ 1861191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1862191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1863191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1864191783Srmacklem } else { 1865191783Srmacklem dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 1866191783Srmacklem } 1867191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1868191783Srmacklem txdr_hyper(at.na_filerev, tl); 1869191783Srmacklem 1870191783Srmacklem /* 1871191783Srmacklem * Save this position, in case there is an empty reply needed. 1872191783Srmacklem */ 1873191783Srmacklem mb1 = nd->nd_mb; 1874191783Srmacklem bpos1 = nd->nd_bpos; 1875191783Srmacklem 1876191783Srmacklem /* Loop through the records and build reply */ 1877191783Srmacklem entrycnt = 0; 1878191783Srmacklem while (cpos < cend && ncookies > 0 && dirlen < cnt) { 1879191783Srmacklem nlen = dp->d_namlen; 1880191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1881191783Srmacklem nlen <= NFS_MAXNAMLEN && 1882191783Srmacklem ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 1883191783Srmacklem (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 1884191783Srmacklem || (nlen == 1 && dp->d_name[0] != '.'))) { 1885191783Srmacklem /* 1886191783Srmacklem * Save the current position in the reply, in case 1887191783Srmacklem * this entry exceeds cnt. 1888191783Srmacklem */ 1889191783Srmacklem mb1 = nd->nd_mb; 1890191783Srmacklem bpos1 = nd->nd_bpos; 1891191783Srmacklem 1892191783Srmacklem /* 1893191783Srmacklem * For readdir_and_lookup get the vnode using 1894191783Srmacklem * the file number. 1895191783Srmacklem */ 1896191783Srmacklem nvp = NULL; 1897191783Srmacklem refp = NULL; 1898191783Srmacklem r = 0; 1899191783Srmacklem if ((nd->nd_flag & ND_NFSV3) || 1900191783Srmacklem NFSNONZERO_ATTRBIT(&savbits)) { 1901191783Srmacklem if (nd->nd_flag & ND_NFSV4) 1902191783Srmacklem refp = nfsv4root_getreferral(NULL, 1903191783Srmacklem vp, dp->d_fileno); 1904199715Srmacklem if (refp == NULL) { 1905199715Srmacklem if (usevget) 1906199715Srmacklem r = VFS_VGET(vp->v_mount, 1907199715Srmacklem dp->d_fileno, LK_EXCLUSIVE, 1908199715Srmacklem &nvp); 1909199715Srmacklem else 1910199715Srmacklem r = EOPNOTSUPP; 1911199715Srmacklem if (r == EOPNOTSUPP) { 1912199715Srmacklem if (usevget) { 1913199715Srmacklem usevget = 0; 1914199715Srmacklem cn.cn_nameiop = LOOKUP; 1915199715Srmacklem cn.cn_lkflags = 1916199715Srmacklem LK_EXCLUSIVE | 1917199715Srmacklem LK_RETRY; 1918199715Srmacklem cn.cn_cred = 1919199715Srmacklem nd->nd_cred; 1920199715Srmacklem cn.cn_thread = p; 1921199715Srmacklem } 1922199715Srmacklem cn.cn_nameptr = dp->d_name; 1923199715Srmacklem cn.cn_namelen = nlen; 1924199715Srmacklem cn.cn_flags = ISLASTCN | 1925199715Srmacklem NOFOLLOW | LOCKLEAF | 1926199715Srmacklem MPSAFE; 1927199715Srmacklem if (nlen == 2 && 1928199715Srmacklem dp->d_name[0] == '.' && 1929199715Srmacklem dp->d_name[1] == '.') 1930199715Srmacklem cn.cn_flags |= 1931199715Srmacklem ISDOTDOT; 1932199715Srmacklem if (!VOP_ISLOCKED(vp)) 1933199715Srmacklem vn_lock(vp, 1934199715Srmacklem LK_EXCLUSIVE | 1935199715Srmacklem LK_RETRY); 1936214149Srmacklem if ((vp->v_vflag & VV_ROOT) != 0 1937214149Srmacklem && (cn.cn_flags & ISDOTDOT) 1938214149Srmacklem != 0) { 1939214149Srmacklem vref(vp); 1940214149Srmacklem nvp = vp; 1941214149Srmacklem r = 0; 1942214149Srmacklem } else 1943214149Srmacklem r = VOP_LOOKUP(vp, &nvp, 1944214149Srmacklem &cn); 1945199715Srmacklem } 1946199715Srmacklem } 1947191783Srmacklem if (!r) { 1948191783Srmacklem if (refp == NULL && 1949191783Srmacklem ((nd->nd_flag & ND_NFSV3) || 1950191783Srmacklem NFSNONZERO_ATTRBIT(&attrbits))) { 1951191783Srmacklem r = nfsvno_getfh(nvp, &nfh, p); 1952191783Srmacklem if (!r) 1953191783Srmacklem r = nfsvno_getattr(nvp, nvap, 1954191783Srmacklem nd->nd_cred, p); 1955191783Srmacklem } 1956191783Srmacklem } else { 1957191783Srmacklem nvp = NULL; 1958191783Srmacklem } 1959191783Srmacklem if (r) { 1960191783Srmacklem if (!NFSISSET_ATTRBIT(&attrbits, 1961191783Srmacklem NFSATTRBIT_RDATTRERROR)) { 1962191783Srmacklem if (nvp != NULL) 1963191783Srmacklem vput(nvp); 1964191783Srmacklem nd->nd_repstat = r; 1965191783Srmacklem break; 1966191783Srmacklem } 1967191783Srmacklem } 1968191783Srmacklem } 1969191783Srmacklem 1970191783Srmacklem /* 1971191783Srmacklem * Build the directory record xdr 1972191783Srmacklem */ 1973191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1974191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1975191783Srmacklem *tl++ = newnfs_true; 1976191783Srmacklem *tl++ = 0; 1977191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1978191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 1979191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1980191783Srmacklem *tl++ = 0; 1981191783Srmacklem *tl = txdr_unsigned(*cookiep); 1982191783Srmacklem nfsrv_postopattr(nd, 0, nvap); 1983191783Srmacklem dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1); 1984191783Srmacklem dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 1985191783Srmacklem if (nvp != NULL) 1986191783Srmacklem vput(nvp); 1987191783Srmacklem } else { 1988191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1989191783Srmacklem *tl++ = newnfs_true; 1990191783Srmacklem *tl++ = 0; 1991191783Srmacklem *tl = txdr_unsigned(*cookiep); 1992191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 1993191783Srmacklem if (nvp != NULL) 1994191783Srmacklem NFSVOPUNLOCK(nvp, 0, p); 1995191783Srmacklem if (refp != NULL) { 1996191783Srmacklem dirlen += nfsrv_putreferralattr(nd, 1997191783Srmacklem &savbits, refp, 0, 1998191783Srmacklem &nd->nd_repstat); 1999191783Srmacklem if (nd->nd_repstat) { 2000191783Srmacklem if (nvp != NULL) 2001191783Srmacklem vrele(nvp); 2002191783Srmacklem break; 2003191783Srmacklem } 2004191783Srmacklem } else if (r) { 2005191783Srmacklem dirlen += nfsvno_fillattr(nd, nvp, nvap, 2006191783Srmacklem &nfh, r, &rderrbits, nd->nd_cred, 2007191783Srmacklem p, isdgram, 0); 2008191783Srmacklem } else { 2009191783Srmacklem dirlen += nfsvno_fillattr(nd, nvp, nvap, 2010191783Srmacklem &nfh, r, &attrbits, nd->nd_cred, 2011191783Srmacklem p, isdgram, 0); 2012191783Srmacklem } 2013191783Srmacklem if (nvp != NULL) 2014191783Srmacklem vrele(nvp); 2015191783Srmacklem dirlen += (3 * NFSX_UNSIGNED); 2016191783Srmacklem } 2017191783Srmacklem if (dirlen <= cnt) 2018191783Srmacklem entrycnt++; 2019191783Srmacklem } 2020191783Srmacklem cpos += dp->d_reclen; 2021191783Srmacklem dp = (struct dirent *)cpos; 2022191783Srmacklem cookiep++; 2023191783Srmacklem ncookies--; 2024191783Srmacklem } 2025199715Srmacklem if (!usevget && VOP_ISLOCKED(vp)) 2026199715Srmacklem vput(vp); 2027199715Srmacklem else 2028199715Srmacklem vrele(vp); 2029191783Srmacklem 2030191783Srmacklem /* 2031191783Srmacklem * If dirlen > cnt, we must strip off the last entry. If that 2032191783Srmacklem * results in an empty reply, report NFSERR_TOOSMALL. 2033191783Srmacklem */ 2034191783Srmacklem if (dirlen > cnt || nd->nd_repstat) { 2035191783Srmacklem if (!nd->nd_repstat && entrycnt == 0) 2036191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 2037191783Srmacklem if (nd->nd_repstat) 2038191783Srmacklem newnfs_trimtrailing(nd, mb0, bpos0); 2039191783Srmacklem else 2040191783Srmacklem newnfs_trimtrailing(nd, mb1, bpos1); 2041191783Srmacklem eofflag = 0; 2042191783Srmacklem } else if (cpos < cend) 2043191783Srmacklem eofflag = 0; 2044191783Srmacklem if (!nd->nd_repstat) { 2045191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2046191783Srmacklem *tl++ = newnfs_false; 2047191783Srmacklem if (eofflag) 2048191783Srmacklem *tl = newnfs_true; 2049191783Srmacklem else 2050191783Srmacklem *tl = newnfs_false; 2051191783Srmacklem } 2052191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 2053191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 2054191783Srmacklem return (0); 2055191783Srmacklemnfsmout: 2056191783Srmacklem vput(vp); 2057191783Srmacklem return (error); 2058191783Srmacklem} 2059191783Srmacklem 2060191783Srmacklem/* 2061191783Srmacklem * Get the settable attributes out of the mbuf list. 2062191783Srmacklem * (Return 0 or EBADRPC) 2063191783Srmacklem */ 2064191783Srmacklemint 2065191783Srmacklemnfsrv_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2066191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2067191783Srmacklem{ 2068191783Srmacklem u_int32_t *tl; 2069191783Srmacklem struct nfsv2_sattr *sp; 2070191783Srmacklem struct timeval curtime; 2071191783Srmacklem int error = 0, toclient = 0; 2072191783Srmacklem 2073191783Srmacklem switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 2074191783Srmacklem case ND_NFSV2: 2075191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2076191783Srmacklem /* 2077191783Srmacklem * Some old clients didn't fill in the high order 16bits. 2078191783Srmacklem * --> check the low order 2 bytes for 0xffff 2079191783Srmacklem */ 2080191783Srmacklem if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 2081191783Srmacklem nvap->na_mode = nfstov_mode(sp->sa_mode); 2082191783Srmacklem if (sp->sa_uid != newnfs_xdrneg1) 2083191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 2084191783Srmacklem if (sp->sa_gid != newnfs_xdrneg1) 2085191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 2086191783Srmacklem if (sp->sa_size != newnfs_xdrneg1) 2087191783Srmacklem nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 2088191783Srmacklem if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 2089191783Srmacklem#ifdef notyet 2090191783Srmacklem fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 2091191783Srmacklem#else 2092191783Srmacklem nvap->na_atime.tv_sec = 2093191783Srmacklem fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 2094191783Srmacklem nvap->na_atime.tv_nsec = 0; 2095191783Srmacklem#endif 2096191783Srmacklem } 2097191783Srmacklem if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 2098191783Srmacklem fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 2099191783Srmacklem break; 2100191783Srmacklem case ND_NFSV3: 2101191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2102191783Srmacklem if (*tl == newnfs_true) { 2103191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2104191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2105191783Srmacklem } 2106191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2107191783Srmacklem if (*tl == newnfs_true) { 2108191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2109191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, *tl); 2110191783Srmacklem } 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_gid = fxdr_unsigned(gid_t, *tl); 2115191783Srmacklem } 2116191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2117191783Srmacklem if (*tl == newnfs_true) { 2118191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2119191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2120191783Srmacklem } 2121191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2122191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2123191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2124191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2125191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_atime); 2126191783Srmacklem toclient = 1; 2127191783Srmacklem break; 2128191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2129191783Srmacklem NFSGETTIME(&curtime); 2130191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2131191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2132191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2133191783Srmacklem break; 2134191783Srmacklem }; 2135191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2136191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2137191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2138191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2139191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_mtime); 2140191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2141191783Srmacklem break; 2142191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2143191783Srmacklem NFSGETTIME(&curtime); 2144191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2145191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2146191783Srmacklem if (!toclient) 2147191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2148191783Srmacklem break; 2149191783Srmacklem }; 2150191783Srmacklem break; 2151191783Srmacklem case ND_NFSV4: 2152191783Srmacklem error = nfsv4_sattr(nd, nvap, attrbitp, aclp, p); 2153191783Srmacklem }; 2154191783Srmacklemnfsmout: 2155191783Srmacklem return (error); 2156191783Srmacklem} 2157191783Srmacklem 2158191783Srmacklem/* 2159191783Srmacklem * Handle the setable attributes for V4. 2160191783Srmacklem * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 2161191783Srmacklem */ 2162191783Srmacklemint 2163191783Srmacklemnfsv4_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2164191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2165191783Srmacklem{ 2166191783Srmacklem u_int32_t *tl; 2167191783Srmacklem int attrsum = 0; 2168191783Srmacklem int i, j; 2169191783Srmacklem int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 2170191783Srmacklem int toclient = 0; 2171191783Srmacklem u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 2172191783Srmacklem uid_t uid; 2173191783Srmacklem gid_t gid; 2174191783Srmacklem struct timeval curtime; 2175191783Srmacklem 2176191783Srmacklem error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 2177191783Srmacklem if (error) 2178191783Srmacklem return (error); 2179191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2180191783Srmacklem attrsize = fxdr_unsigned(int, *tl); 2181191783Srmacklem 2182191783Srmacklem /* 2183191783Srmacklem * Loop around getting the setable attributes. If an unsupported 2184191783Srmacklem * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 2185191783Srmacklem */ 2186191783Srmacklem if (retnotsup) { 2187191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2188191783Srmacklem bitpos = NFSATTRBIT_MAX; 2189191783Srmacklem } else { 2190191783Srmacklem bitpos = 0; 2191191783Srmacklem } 2192191783Srmacklem for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 2193191783Srmacklem if (attrsum > attrsize) { 2194191783Srmacklem error = NFSERR_BADXDR; 2195191783Srmacklem goto nfsmout; 2196191783Srmacklem } 2197191783Srmacklem if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 2198191783Srmacklem switch (bitpos) { 2199191783Srmacklem case NFSATTRBIT_SIZE: 2200191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2201191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2202191783Srmacklem attrsum += NFSX_HYPER; 2203191783Srmacklem break; 2204191783Srmacklem case NFSATTRBIT_ACL: 2205191783Srmacklem error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize, 2206191783Srmacklem p); 2207191783Srmacklem if (error) 2208191783Srmacklem goto nfsmout; 2209191783Srmacklem if (aceerr && !nd->nd_repstat) 2210191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2211191783Srmacklem attrsum += aclsize; 2212191783Srmacklem break; 2213191783Srmacklem case NFSATTRBIT_ARCHIVE: 2214191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2215191783Srmacklem if (!nd->nd_repstat) 2216191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2217191783Srmacklem attrsum += NFSX_UNSIGNED; 2218191783Srmacklem break; 2219191783Srmacklem case NFSATTRBIT_HIDDEN: 2220191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2221191783Srmacklem if (!nd->nd_repstat) 2222191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2223191783Srmacklem attrsum += NFSX_UNSIGNED; 2224191783Srmacklem break; 2225191783Srmacklem case NFSATTRBIT_MIMETYPE: 2226191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2227191783Srmacklem i = fxdr_unsigned(int, *tl); 2228191783Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 2229191783Srmacklem if (error) 2230191783Srmacklem goto nfsmout; 2231191783Srmacklem if (!nd->nd_repstat) 2232191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2233191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 2234191783Srmacklem break; 2235191783Srmacklem case NFSATTRBIT_MODE: 2236191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2237191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2238191783Srmacklem attrsum += NFSX_UNSIGNED; 2239191783Srmacklem break; 2240191783Srmacklem case NFSATTRBIT_OWNER: 2241191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2242191783Srmacklem j = fxdr_unsigned(int, *tl); 2243191783Srmacklem if (j < 0) 2244191783Srmacklem return (NFSERR_BADXDR); 2245191783Srmacklem if (j > NFSV4_SMALLSTR) 2246191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2247191783Srmacklem else 2248191783Srmacklem cp = namestr; 2249191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2250191783Srmacklem if (error) { 2251191783Srmacklem if (j > NFSV4_SMALLSTR) 2252191783Srmacklem free(cp, M_NFSSTRING); 2253191783Srmacklem return (error); 2254191783Srmacklem } 2255191783Srmacklem if (!nd->nd_repstat) { 2256191783Srmacklem nd->nd_repstat = nfsv4_strtouid(cp,j,&uid,p); 2257191783Srmacklem if (!nd->nd_repstat) 2258191783Srmacklem nvap->na_uid = uid; 2259191783Srmacklem } 2260191783Srmacklem if (j > NFSV4_SMALLSTR) 2261191783Srmacklem free(cp, M_NFSSTRING); 2262191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2263191783Srmacklem break; 2264191783Srmacklem case NFSATTRBIT_OWNERGROUP: 2265191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2266191783Srmacklem j = fxdr_unsigned(int, *tl); 2267191783Srmacklem if (j < 0) 2268191783Srmacklem return (NFSERR_BADXDR); 2269191783Srmacklem if (j > NFSV4_SMALLSTR) 2270191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2271191783Srmacklem else 2272191783Srmacklem cp = namestr; 2273191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2274191783Srmacklem if (error) { 2275191783Srmacklem if (j > NFSV4_SMALLSTR) 2276191783Srmacklem free(cp, M_NFSSTRING); 2277191783Srmacklem return (error); 2278191783Srmacklem } 2279191783Srmacklem if (!nd->nd_repstat) { 2280191783Srmacklem nd->nd_repstat = nfsv4_strtogid(cp,j,&gid,p); 2281191783Srmacklem if (!nd->nd_repstat) 2282191783Srmacklem nvap->na_gid = gid; 2283191783Srmacklem } 2284191783Srmacklem if (j > NFSV4_SMALLSTR) 2285191783Srmacklem free(cp, M_NFSSTRING); 2286191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2287191783Srmacklem break; 2288191783Srmacklem case NFSATTRBIT_SYSTEM: 2289191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2290191783Srmacklem if (!nd->nd_repstat) 2291191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2292191783Srmacklem attrsum += NFSX_UNSIGNED; 2293191783Srmacklem break; 2294191783Srmacklem case NFSATTRBIT_TIMEACCESSSET: 2295191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2296191783Srmacklem attrsum += NFSX_UNSIGNED; 2297191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2298191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2299191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_atime); 2300191783Srmacklem toclient = 1; 2301191783Srmacklem attrsum += NFSX_V4TIME; 2302191783Srmacklem } else { 2303191783Srmacklem NFSGETTIME(&curtime); 2304191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2305191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2306191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2307191783Srmacklem } 2308191783Srmacklem break; 2309191783Srmacklem case NFSATTRBIT_TIMEBACKUP: 2310191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2311191783Srmacklem if (!nd->nd_repstat) 2312191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2313191783Srmacklem attrsum += NFSX_V4TIME; 2314191783Srmacklem break; 2315191783Srmacklem case NFSATTRBIT_TIMECREATE: 2316191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2317191783Srmacklem if (!nd->nd_repstat) 2318191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2319191783Srmacklem attrsum += NFSX_V4TIME; 2320191783Srmacklem break; 2321191783Srmacklem case NFSATTRBIT_TIMEMODIFYSET: 2322191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2323191783Srmacklem attrsum += NFSX_UNSIGNED; 2324191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2325191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2326191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_mtime); 2327191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2328191783Srmacklem attrsum += NFSX_V4TIME; 2329191783Srmacklem } else { 2330191783Srmacklem NFSGETTIME(&curtime); 2331191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2332191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2333191783Srmacklem if (!toclient) 2334191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2335191783Srmacklem } 2336191783Srmacklem break; 2337191783Srmacklem default: 2338191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2339191783Srmacklem /* 2340191783Srmacklem * set bitpos so we drop out of the loop. 2341191783Srmacklem */ 2342191783Srmacklem bitpos = NFSATTRBIT_MAX; 2343191783Srmacklem break; 2344191783Srmacklem }; 2345191783Srmacklem } 2346191783Srmacklem 2347191783Srmacklem /* 2348191783Srmacklem * some clients pad the attrlist, so we need to skip over the 2349191783Srmacklem * padding. 2350191783Srmacklem */ 2351191783Srmacklem if (attrsum > attrsize) { 2352191783Srmacklem error = NFSERR_BADXDR; 2353191783Srmacklem } else { 2354191783Srmacklem attrsize = NFSM_RNDUP(attrsize); 2355191783Srmacklem if (attrsum < attrsize) 2356191783Srmacklem error = nfsm_advance(nd, attrsize - attrsum, -1); 2357191783Srmacklem } 2358191783Srmacklemnfsmout: 2359191783Srmacklem return (error); 2360191783Srmacklem} 2361191783Srmacklem 2362191783Srmacklem/* 2363191783Srmacklem * Check/setup export credentials. 2364191783Srmacklem */ 2365191783Srmacklemint 2366191783Srmacklemnfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 2367191783Srmacklem struct ucred *credanon) 2368191783Srmacklem{ 2369191783Srmacklem int error = 0; 2370191783Srmacklem 2371191783Srmacklem /* 2372191783Srmacklem * Check/setup credentials. 2373191783Srmacklem */ 2374191783Srmacklem if (nd->nd_flag & ND_GSS) 2375192121Srmacklem exp->nes_exflag &= ~MNT_EXPORTANON; 2376191783Srmacklem 2377191783Srmacklem /* 2378192121Srmacklem * Check to see if the operation is allowed for this security flavor. 2379191783Srmacklem * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to 2380191783Srmacklem * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 2381192121Srmacklem * Also, allow Secinfo, so that it can acquire the correct flavor(s). 2382191783Srmacklem */ 2383192121Srmacklem if (nfsvno_testexp(nd, exp) && 2384192121Srmacklem nd->nd_procnum != NFSV4OP_SECINFO && 2385191783Srmacklem nd->nd_procnum != NFSPROC_FSINFO) { 2386191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2387191783Srmacklem error = NFSERR_WRONGSEC; 2388191783Srmacklem else 2389191783Srmacklem error = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2390191783Srmacklem return (error); 2391191783Srmacklem } 2392191783Srmacklem 2393191783Srmacklem /* 2394191783Srmacklem * Check to see if the file system is exported V4 only. 2395191783Srmacklem */ 2396191783Srmacklem if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) 2397191783Srmacklem return (NFSERR_PROGNOTV4); 2398191783Srmacklem 2399191783Srmacklem /* 2400191783Srmacklem * Now, map the user credentials. 2401191783Srmacklem * (Note that ND_AUTHNONE will only be set for an NFSv3 2402191783Srmacklem * Fsinfo RPC. If set for anything else, this code might need 2403191783Srmacklem * to change.) 2404191783Srmacklem */ 2405191783Srmacklem if (NFSVNO_EXPORTED(exp) && 2406191783Srmacklem ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) || 2407191783Srmacklem NFSVNO_EXPORTANON(exp) || 2408191783Srmacklem (nd->nd_flag & ND_AUTHNONE))) { 2409191783Srmacklem nd->nd_cred->cr_uid = credanon->cr_uid; 2410191783Srmacklem nd->nd_cred->cr_gid = credanon->cr_gid; 2411194498Sbrooks crsetgroups(nd->nd_cred, credanon->cr_ngroups, 2412194498Sbrooks credanon->cr_groups); 2413191783Srmacklem } 2414191783Srmacklem return (0); 2415191783Srmacklem} 2416191783Srmacklem 2417191783Srmacklem/* 2418191783Srmacklem * Check exports. 2419191783Srmacklem */ 2420191783Srmacklemint 2421191783Srmacklemnfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 2422191783Srmacklem struct ucred **credp) 2423191783Srmacklem{ 2424192121Srmacklem int i, error, *secflavors; 2425191783Srmacklem 2426191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2427192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2428192121Srmacklem if (error) { 2429192121Srmacklem if (nfs_rootfhset) { 2430192121Srmacklem exp->nes_exflag = 0; 2431192121Srmacklem exp->nes_numsecflavor = 0; 2432192121Srmacklem error = 0; 2433192121Srmacklem } 2434192121Srmacklem } else { 2435192121Srmacklem /* Copy the security flavors. */ 2436192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2437192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2438191783Srmacklem } 2439191783Srmacklem return (error); 2440191783Srmacklem} 2441191783Srmacklem 2442191783Srmacklem/* 2443191783Srmacklem * Get a vnode for a file handle and export stuff. 2444191783Srmacklem */ 2445191783Srmacklemint 2446191783Srmacklemnfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 2447191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, struct ucred **credp) 2448191783Srmacklem{ 2449192121Srmacklem int i, error, *secflavors; 2450191783Srmacklem 2451191998Srmacklem *credp = NULL; 2452192121Srmacklem exp->nes_numsecflavor = 0; 2453191783Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp); 2454205663Srmacklem if (error != 0) 2455205663Srmacklem /* Make sure the server replies ESTALE to the client. */ 2456205663Srmacklem error = ESTALE; 2457191783Srmacklem if (nam && !error) { 2458191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2459192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2460191783Srmacklem if (error) { 2461191783Srmacklem if (nfs_rootfhset) { 2462191783Srmacklem exp->nes_exflag = 0; 2463192121Srmacklem exp->nes_numsecflavor = 0; 2464191783Srmacklem error = 0; 2465191783Srmacklem } else { 2466191783Srmacklem vput(*vpp); 2467191783Srmacklem } 2468192121Srmacklem } else { 2469192121Srmacklem /* Copy the security flavors. */ 2470192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2471192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2472191783Srmacklem } 2473191783Srmacklem } 2474191783Srmacklem return (error); 2475191783Srmacklem} 2476191783Srmacklem 2477191783Srmacklem/* 2478191783Srmacklem * Do the pathconf vnode op. 2479191783Srmacklem */ 2480191783Srmacklemint 2481191783Srmacklemnfsvno_pathconf(struct vnode *vp, int flag, register_t *retf, 2482191783Srmacklem struct ucred *cred, struct thread *p) 2483191783Srmacklem{ 2484191783Srmacklem int error; 2485191783Srmacklem 2486191783Srmacklem error = VOP_PATHCONF(vp, flag, retf); 2487191783Srmacklem return (error); 2488191783Srmacklem} 2489191783Srmacklem 2490191783Srmacklem/* 2491191783Srmacklem * nfsd_fhtovp() - convert a fh to a vnode ptr 2492191783Srmacklem * - look up fsid in mount list (if not found ret error) 2493191783Srmacklem * - get vp and export rights by calling nfsvno_fhtovp() 2494191783Srmacklem * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2495191783Srmacklem * for AUTH_SYS 2496191783Srmacklem * Also handle getting the Giant lock for the file system, 2497191783Srmacklem * as required: 2498191783Srmacklem * - if same mount point as *mpp 2499191783Srmacklem * do nothing 2500191783Srmacklem * else if *mpp == NULL 2501191783Srmacklem * if already locked 2502191783Srmacklem * leave it locked 2503191783Srmacklem * else 2504191783Srmacklem * call VFS_LOCK_GIANT() 2505191783Srmacklem * else 2506191783Srmacklem * if already locked 2507191783Srmacklem * unlock Giant 2508191783Srmacklem * call VFS_LOCK_GIANT() 2509191783Srmacklem */ 2510191783Srmacklemvoid 2511191783Srmacklemnfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, 2512191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, 2513191783Srmacklem struct mount **mpp, int startwrite, struct thread *p) 2514191783Srmacklem{ 2515191783Srmacklem struct mount *mp; 2516191783Srmacklem struct ucred *credanon; 2517191783Srmacklem fhandle_t *fhp; 2518191783Srmacklem 2519191783Srmacklem fhp = (fhandle_t *)nfp->nfsrvfh_data; 2520191783Srmacklem /* 2521191783Srmacklem * Check for the special case of the nfsv4root_fh. 2522191783Srmacklem */ 2523191783Srmacklem mp = vfs_getvfs(&fhp->fh_fsid); 2524191783Srmacklem if (!mp) { 2525191783Srmacklem *vpp = NULL; 2526191783Srmacklem nd->nd_repstat = ESTALE; 2527191783Srmacklem if (*mpp && exp->nes_vfslocked) 2528191783Srmacklem VFS_UNLOCK_GIANT(*mpp); 2529191783Srmacklem *mpp = NULL; 2530191783Srmacklem exp->nes_vfslocked = 0; 2531191783Srmacklem return; 2532191783Srmacklem } 2533191783Srmacklem 2534191783Srmacklem /* 2535191783Srmacklem * Now, handle Giant for the file system. 2536191783Srmacklem */ 2537191783Srmacklem if (*mpp != NULL && *mpp != mp && exp->nes_vfslocked) { 2538191783Srmacklem VFS_UNLOCK_GIANT(*mpp); 2539191783Srmacklem exp->nes_vfslocked = 0; 2540191783Srmacklem } 2541191783Srmacklem if (!exp->nes_vfslocked && *mpp != mp) 2542191783Srmacklem exp->nes_vfslocked = VFS_LOCK_GIANT(mp); 2543191783Srmacklem 2544191783Srmacklem *mpp = mp; 2545191783Srmacklem if (startwrite) 2546191783Srmacklem vn_start_write(NULL, mpp, V_WAIT); 2547191783Srmacklem 2548191783Srmacklem nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, vpp, exp, 2549191783Srmacklem &credanon); 2550191783Srmacklem 2551191783Srmacklem /* 2552191783Srmacklem * For NFSv4 without a pseudo root fs, unexported file handles 2553191783Srmacklem * can be returned, so that Lookup works everywhere. 2554191783Srmacklem */ 2555191783Srmacklem if (!nd->nd_repstat && exp->nes_exflag == 0 && 2556191783Srmacklem !(nd->nd_flag & ND_NFSV4)) { 2557191783Srmacklem vput(*vpp); 2558191783Srmacklem nd->nd_repstat = EACCES; 2559191783Srmacklem } 2560191783Srmacklem 2561191783Srmacklem /* 2562191783Srmacklem * Personally, I've never seen any point in requiring a 2563191783Srmacklem * reserved port#, since only in the rare case where the 2564191783Srmacklem * clients are all boxes with secure system priviledges, 2565191783Srmacklem * does it provide any enhanced security, but... some people 2566191783Srmacklem * believe it to be useful and keep putting this code back in. 2567191783Srmacklem * (There is also some "security checker" out there that 2568191783Srmacklem * complains if the nfs server doesn't enforce this.) 2569191783Srmacklem * However, note the following: 2570191783Srmacklem * RFC3530 (NFSv4) specifies that a reserved port# not be 2571191783Srmacklem * required. 2572191783Srmacklem * RFC2623 recommends that, if a reserved port# is checked for, 2573191783Srmacklem * that there be a way to turn that off--> ifdef'd. 2574191783Srmacklem */ 2575191783Srmacklem#ifdef NFS_REQRSVPORT 2576191783Srmacklem if (!nd->nd_repstat) { 2577192121Srmacklem struct sockaddr_in *saddr; 2578192121Srmacklem struct sockaddr_in6 *saddr6; 2579192121Srmacklem 2580192121Srmacklem saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 2581192121Srmacklem saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 2582192121Srmacklem if (!(nd->nd_flag & ND_NFSV4) && 2583192121Srmacklem ((saddr->sin_family == AF_INET && 2584192121Srmacklem ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 2585192121Srmacklem (saddr6->sin6_family == AF_INET6 && 2586192121Srmacklem ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 2587192121Srmacklem vput(*vpp); 2588192121Srmacklem nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2589192121Srmacklem } 2590191783Srmacklem } 2591191783Srmacklem#endif /* NFS_REQRSVPORT */ 2592191783Srmacklem 2593191783Srmacklem /* 2594191783Srmacklem * Check/setup credentials. 2595191783Srmacklem */ 2596191783Srmacklem if (!nd->nd_repstat) { 2597191783Srmacklem nd->nd_saveduid = nd->nd_cred->cr_uid; 2598191783Srmacklem nd->nd_repstat = nfsd_excred(nd, exp, credanon); 2599191783Srmacklem if (nd->nd_repstat) 2600191783Srmacklem vput(*vpp); 2601191783Srmacklem } 2602191940Skan if (credanon != NULL) 2603191940Skan crfree(credanon); 2604191783Srmacklem if (nd->nd_repstat) { 2605191783Srmacklem if (startwrite) 2606191783Srmacklem vn_finished_write(mp); 2607191783Srmacklem if (exp->nes_vfslocked) { 2608191783Srmacklem VFS_UNLOCK_GIANT(mp); 2609191783Srmacklem exp->nes_vfslocked = 0; 2610191783Srmacklem } 2611191783Srmacklem vfs_rel(mp); 2612191783Srmacklem *vpp = NULL; 2613191783Srmacklem *mpp = NULL; 2614191783Srmacklem } else { 2615191783Srmacklem vfs_rel(mp); 2616191783Srmacklem } 2617191783Srmacklem} 2618191783Srmacklem 2619191783Srmacklem/* 2620191783Srmacklem * glue for fp. 2621191783Srmacklem */ 2622191783Srmacklemint 2623191783Srmacklemfp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 2624191783Srmacklem{ 2625191783Srmacklem struct filedesc *fdp; 2626191783Srmacklem struct file *fp; 2627191783Srmacklem 2628191783Srmacklem fdp = p->td_proc->p_fd; 2629191783Srmacklem if (fd >= fdp->fd_nfiles || 2630191783Srmacklem (fp = fdp->fd_ofiles[fd]) == NULL) 2631191783Srmacklem return (EBADF); 2632191783Srmacklem *fpp = fp; 2633191783Srmacklem return (0); 2634191783Srmacklem} 2635191783Srmacklem 2636191783Srmacklem/* 2637192121Srmacklem * Called from nfssvc() to update the exports list. Just call 2638191783Srmacklem * vfs_export(). This has to be done, since the v4 root fake fs isn't 2639191783Srmacklem * in the mount list. 2640191783Srmacklem */ 2641191783Srmacklemint 2642191783Srmacklemnfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 2643191783Srmacklem{ 2644191783Srmacklem struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 2645191783Srmacklem int error; 2646191783Srmacklem struct nameidata nd; 2647191783Srmacklem fhandle_t fh; 2648191783Srmacklem 2649191783Srmacklem error = vfs_export(&nfsv4root_mnt, &nfsexargp->export); 2650191783Srmacklem if ((nfsexargp->export.ex_flags & MNT_DELEXPORT)) { 2651191783Srmacklem nfs_rootfhset = 0; 2652191783Srmacklem nfsv4root_set = 0; 2653191783Srmacklem } else if (error == 0) { 2654191783Srmacklem if (nfsexargp->fspec == NULL) 2655191783Srmacklem return (EPERM); 2656191783Srmacklem /* 2657191783Srmacklem * If fspec != NULL, this is the v4root path. 2658191783Srmacklem */ 2659191783Srmacklem NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_USERSPACE, 2660191783Srmacklem nfsexargp->fspec, p); 2661191783Srmacklem if ((error = namei(&nd)) != 0) 2662191783Srmacklem return (error); 2663191783Srmacklem error = nfsvno_getfh(nd.ni_vp, &fh, p); 2664191783Srmacklem vrele(nd.ni_vp); 2665191783Srmacklem if (!error) { 2666191783Srmacklem nfs_rootfh.nfsrvfh_len = NFSX_MYFH; 2667191783Srmacklem NFSBCOPY((caddr_t)&fh, 2668191783Srmacklem nfs_rootfh.nfsrvfh_data, 2669191783Srmacklem sizeof (fhandle_t)); 2670191783Srmacklem nfs_rootfhset = 1; 2671191783Srmacklem } 2672191783Srmacklem } 2673191783Srmacklem return (error); 2674191783Srmacklem} 2675191783Srmacklem 2676191783Srmacklem/* 2677191783Srmacklem * Get the tcp socket sequence numbers we need. 2678191783Srmacklem * (Maybe this should be moved to the tcp sources?) 2679191783Srmacklem */ 2680191783Srmacklemint 2681191783Srmacklemnfsrv_getsocksndseq(struct socket *so, tcp_seq *maxp, tcp_seq *unap) 2682191783Srmacklem{ 2683191783Srmacklem struct inpcb *inp; 2684191783Srmacklem struct tcpcb *tp; 2685191783Srmacklem 2686191783Srmacklem inp = sotoinpcb(so); 2687205010Srwatson KASSERT(inp != NULL, ("nfsrv_getsocksndseq: inp == NULL")); 2688205010Srwatson INP_RLOCK(inp); 2689205010Srwatson if (inp->inp_flags & (INP_TIMEWAIT | INP_DROPPED)) { 2690205010Srwatson INP_RUNLOCK(inp); 2691205010Srwatson return (EPIPE); 2692191783Srmacklem } 2693191783Srmacklem tp = intotcpcb(inp); 2694205010Srwatson if (tp->t_state != TCPS_ESTABLISHED) { 2695205010Srwatson INP_RUNLOCK(inp); 2696205010Srwatson return (EPIPE); 2697191783Srmacklem } 2698205010Srwatson *maxp = tp->snd_max; 2699205010Srwatson *unap = tp->snd_una; 2700191783Srmacklem INP_RUNLOCK(inp); 2701205010Srwatson return (0); 2702191783Srmacklem} 2703191783Srmacklem 2704191783Srmacklem/* 2705191783Srmacklem * This function needs to test to see if the system is near its limit 2706191783Srmacklem * for memory allocation via malloc() or mget() and return True iff 2707191783Srmacklem * either of these resources are near their limit. 2708191783Srmacklem * XXX (For now, this is just a stub.) 2709191783Srmacklem */ 2710191783Srmacklemint nfsrv_testmalloclimit = 0; 2711191783Srmacklemint 2712191783Srmacklemnfsrv_mallocmget_limit(void) 2713191783Srmacklem{ 2714191783Srmacklem static int printmesg = 0; 2715191783Srmacklem static int testval = 1; 2716191783Srmacklem 2717191783Srmacklem if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 2718191783Srmacklem if ((printmesg++ % 100) == 0) 2719191783Srmacklem printf("nfsd: malloc/mget near limit\n"); 2720191783Srmacklem return (1); 2721191783Srmacklem } 2722191783Srmacklem return (0); 2723191783Srmacklem} 2724191783Srmacklem 2725191783Srmacklem/* 2726191783Srmacklem * BSD specific initialization of a mount point. 2727191783Srmacklem */ 2728191783Srmacklemvoid 2729191783Srmacklemnfsd_mntinit(void) 2730191783Srmacklem{ 2731191783Srmacklem static int inited = 0; 2732191783Srmacklem 2733191783Srmacklem if (inited) 2734191783Srmacklem return; 2735191783Srmacklem inited = 1; 2736191783Srmacklem nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 2737191783Srmacklem TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist); 2738191783Srmacklem nfsv4root_mnt.mnt_export = NULL; 2739191783Srmacklem TAILQ_INIT(&nfsv4root_opt); 2740191783Srmacklem TAILQ_INIT(&nfsv4root_newopt); 2741191783Srmacklem nfsv4root_mnt.mnt_opt = &nfsv4root_opt; 2742191783Srmacklem nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt; 2743191783Srmacklem nfsv4root_mnt.mnt_nvnodelistsize = 0; 2744191783Srmacklem} 2745191783Srmacklem 2746191783Srmacklem/* 2747191783Srmacklem * Get a vnode for a file handle, without checking exports, etc. 2748191783Srmacklem */ 2749191783Srmacklemstruct vnode * 2750191783Srmacklemnfsvno_getvp(fhandle_t *fhp) 2751191783Srmacklem{ 2752191783Srmacklem struct mount *mp; 2753191783Srmacklem struct vnode *vp; 2754191783Srmacklem int error; 2755191783Srmacklem 2756191783Srmacklem mp = vfs_getvfs(&fhp->fh_fsid); 2757191783Srmacklem if (mp == NULL) 2758191783Srmacklem return (NULL); 2759191783Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, &vp); 2760191783Srmacklem if (error) 2761191783Srmacklem return (NULL); 2762191783Srmacklem return (vp); 2763191783Srmacklem} 2764191783Srmacklem 2765191783Srmacklem/* 2766191783Srmacklem * Check to see it a byte range lock held by a process running 2767191783Srmacklem * locally on the server conflicts with the new lock. 2768191783Srmacklem */ 2769191783Srmacklemint 2770191783Srmacklemnfsvno_localconflict(struct vnode *vp, int ftype, u_int64_t first, 2771192256Srmacklem u_int64_t end, struct nfslockconflict *cfp, struct thread *td) 2772191783Srmacklem{ 2773191783Srmacklem int error; 2774191783Srmacklem struct flock fl; 2775191783Srmacklem 2776191783Srmacklem if (!nfsrv_dolocallocks) 2777191783Srmacklem return (0); 2778191783Srmacklem fl.l_whence = SEEK_SET; 2779191783Srmacklem fl.l_type = ftype; 2780191783Srmacklem fl.l_start = (off_t)first; 2781191783Srmacklem if (end == NFS64BITSSET) 2782191783Srmacklem fl.l_len = 0; 2783191783Srmacklem else 2784191783Srmacklem fl.l_len = (off_t)(end - first); 2785191783Srmacklem /* 2786192256Srmacklem * For FreeBSD8, the l_pid and l_sysid must be set to the same 2787192256Srmacklem * values for all calls, so that all locks will be held by the 2788192256Srmacklem * nfsd server. (The nfsd server handles conflicts between the 2789192256Srmacklem * various clients.) 2790192256Srmacklem * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 2791192256Srmacklem * bytes, so it can't be put in l_sysid. 2792191783Srmacklem */ 2793192503Srmacklem if (nfsv4_sysid == 0) 2794192503Srmacklem nfsv4_sysid = nlm_acquire_next_sysid(); 2795192256Srmacklem fl.l_pid = (pid_t)0; 2796192503Srmacklem fl.l_sysid = (int)nfsv4_sysid; 2797192256Srmacklem 2798192256Srmacklem NFSVOPUNLOCK(vp, 0, td); 2799192256Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_GETLK, &fl, 2800192256Srmacklem (F_POSIX | F_REMOTE)); 2801192256Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, td); 2802191783Srmacklem if (error) 2803191783Srmacklem return (error); 2804191783Srmacklem if (fl.l_type == F_UNLCK) 2805191783Srmacklem return (0); 2806191783Srmacklem if (cfp != NULL) { 2807191783Srmacklem cfp->cl_clientid.lval[0] = cfp->cl_clientid.lval[1] = 0; 2808191783Srmacklem cfp->cl_first = (u_int64_t)fl.l_start; 2809191783Srmacklem if (fl.l_len == 0) 2810191783Srmacklem cfp->cl_end = NFS64BITSSET; 2811191783Srmacklem else 2812191783Srmacklem cfp->cl_end = (u_int64_t) 2813191783Srmacklem (fl.l_start + fl.l_len); 2814191783Srmacklem if (fl.l_type == F_WRLCK) 2815191783Srmacklem cfp->cl_flags = NFSLCK_WRITE; 2816191783Srmacklem else 2817191783Srmacklem cfp->cl_flags = NFSLCK_READ; 2818191783Srmacklem sprintf(cfp->cl_owner, "LOCALID%d", fl.l_pid); 2819191783Srmacklem cfp->cl_ownerlen = strlen(cfp->cl_owner); 2820191783Srmacklem return (NFSERR_DENIED); 2821191783Srmacklem } 2822191783Srmacklem return (NFSERR_INVAL); 2823191783Srmacklem} 2824191783Srmacklem 2825191783Srmacklem/* 2826191783Srmacklem * Do a local VOP_ADVLOCK(). 2827191783Srmacklem */ 2828191783Srmacklemint 2829191783Srmacklemnfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 2830192256Srmacklem u_int64_t end, struct thread *td) 2831191783Srmacklem{ 2832191783Srmacklem int error; 2833191783Srmacklem struct flock fl; 2834191783Srmacklem u_int64_t tlen; 2835191783Srmacklem 2836212833Srmacklem if (nfsrv_dolocallocks == 0) 2837191783Srmacklem return (0); 2838191783Srmacklem fl.l_whence = SEEK_SET; 2839191783Srmacklem fl.l_type = ftype; 2840191783Srmacklem fl.l_start = (off_t)first; 2841191783Srmacklem if (end == NFS64BITSSET) { 2842191783Srmacklem fl.l_len = 0; 2843191783Srmacklem } else { 2844191783Srmacklem tlen = end - first; 2845191783Srmacklem fl.l_len = (off_t)tlen; 2846191783Srmacklem } 2847191783Srmacklem /* 2848192256Srmacklem * For FreeBSD8, the l_pid and l_sysid must be set to the same 2849192256Srmacklem * values for all calls, so that all locks will be held by the 2850192256Srmacklem * nfsd server. (The nfsd server handles conflicts between the 2851192256Srmacklem * various clients.) 2852192256Srmacklem * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 2853192256Srmacklem * bytes, so it can't be put in l_sysid. 2854191783Srmacklem */ 2855192503Srmacklem if (nfsv4_sysid == 0) 2856192503Srmacklem nfsv4_sysid = nlm_acquire_next_sysid(); 2857192256Srmacklem fl.l_pid = (pid_t)0; 2858192503Srmacklem fl.l_sysid = (int)nfsv4_sysid; 2859192256Srmacklem 2860192256Srmacklem NFSVOPUNLOCK(vp, 0, td); 2861212833Srmacklem if (ftype == F_UNLCK) 2862212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, 2863212833Srmacklem (F_POSIX | F_REMOTE)); 2864212833Srmacklem else 2865212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 2866212833Srmacklem (F_POSIX | F_REMOTE)); 2867192256Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, td); 2868191783Srmacklem return (error); 2869191783Srmacklem} 2870191783Srmacklem 2871191783Srmacklem/* 2872191783Srmacklem * Unlock an underlying local file system. 2873191783Srmacklem */ 2874191783Srmacklemvoid 2875191783Srmacklemnfsvno_unlockvfs(struct mount *mp) 2876191783Srmacklem{ 2877191783Srmacklem 2878191783Srmacklem VFS_UNLOCK_GIANT(mp); 2879191783Srmacklem} 2880191783Srmacklem 2881191783Srmacklem/* 2882191783Srmacklem * Lock an underlying file system, as required, and return 2883191783Srmacklem * whether or not it is locked. 2884191783Srmacklem */ 2885191783Srmacklemint 2886191783Srmacklemnfsvno_lockvfs(struct mount *mp) 2887191783Srmacklem{ 2888191783Srmacklem int ret; 2889191783Srmacklem 2890191783Srmacklem ret = VFS_LOCK_GIANT(mp); 2891191783Srmacklem return (ret); 2892191783Srmacklem} 2893191783Srmacklem 2894191783Srmacklem/* 2895191783Srmacklem * Check the nfsv4 root exports. 2896191783Srmacklem */ 2897191783Srmacklemint 2898191783Srmacklemnfsvno_v4rootexport(struct nfsrv_descript *nd) 2899191783Srmacklem{ 2900191783Srmacklem struct ucred *credanon; 2901192121Srmacklem int exflags, error, numsecflavor, *secflavors, i; 2902191783Srmacklem 2903191783Srmacklem error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags, 2904192121Srmacklem &credanon, &numsecflavor, &secflavors); 2905191783Srmacklem if (error) 2906191783Srmacklem return (NFSERR_PROGUNAVAIL); 2907191940Skan if (credanon != NULL) 2908191940Skan crfree(credanon); 2909192121Srmacklem for (i = 0; i < numsecflavor; i++) { 2910192121Srmacklem if (secflavors[i] == AUTH_SYS) 2911192121Srmacklem nd->nd_flag |= ND_EXAUTHSYS; 2912192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5) 2913192121Srmacklem nd->nd_flag |= ND_EXGSS; 2914192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5I) 2915192121Srmacklem nd->nd_flag |= ND_EXGSSINTEGRITY; 2916192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5P) 2917192121Srmacklem nd->nd_flag |= ND_EXGSSPRIVACY; 2918192121Srmacklem } 2919191783Srmacklem return (0); 2920191783Srmacklem} 2921191783Srmacklem 2922191783Srmacklem/* 2923191783Srmacklem * Nfs server psuedo system call for the nfsd's 2924191783Srmacklem */ 2925191783Srmacklem/* 2926191783Srmacklem * MPSAFE 2927191783Srmacklem */ 2928191783Srmacklemstatic int 2929191783Srmacklemnfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 2930191783Srmacklem{ 2931191783Srmacklem struct file *fp; 2932192017Srmacklem struct nfsd_addsock_args sockarg; 2933192017Srmacklem struct nfsd_nfsd_args nfsdarg; 2934191783Srmacklem int error; 2935191783Srmacklem 2936191783Srmacklem if (uap->flag & NFSSVC_NFSDADDSOCK) { 2937192017Srmacklem error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 2938191783Srmacklem if (error) 2939191783Srmacklem return (error); 2940192017Srmacklem if ((error = fget(td, sockarg.sock, &fp)) != 0) { 2941191783Srmacklem return (error); 2942191783Srmacklem } 2943191783Srmacklem if (fp->f_type != DTYPE_SOCKET) { 2944191783Srmacklem fdrop(fp, td); 2945191783Srmacklem return (EPERM); 2946191783Srmacklem } 2947191783Srmacklem error = nfsrvd_addsock(fp); 2948191783Srmacklem fdrop(fp, td); 2949191783Srmacklem } else if (uap->flag & NFSSVC_NFSDNFSD) { 2950192017Srmacklem if (uap->argp == NULL) 2951192017Srmacklem return (EINVAL); 2952192017Srmacklem error = copyin(uap->argp, (caddr_t)&nfsdarg, 2953192017Srmacklem sizeof (nfsdarg)); 2954192017Srmacklem if (error) 2955192017Srmacklem return (error); 2956192017Srmacklem error = nfsrvd_nfsd(td, &nfsdarg); 2957191783Srmacklem } else { 2958191783Srmacklem error = nfssvc_srvcall(td, uap, td->td_ucred); 2959191783Srmacklem } 2960191783Srmacklem return (error); 2961191783Srmacklem} 2962191783Srmacklem 2963191783Srmacklemstatic int 2964191783Srmacklemnfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 2965191783Srmacklem{ 2966191783Srmacklem struct nfsex_args export; 2967191783Srmacklem struct file *fp = NULL; 2968191783Srmacklem int stablefd, len; 2969191783Srmacklem struct nfsd_clid adminrevoke; 2970191783Srmacklem struct nfsd_dumplist dumplist; 2971191783Srmacklem struct nfsd_dumpclients *dumpclients; 2972191783Srmacklem struct nfsd_dumplocklist dumplocklist; 2973191783Srmacklem struct nfsd_dumplocks *dumplocks; 2974191783Srmacklem struct nameidata nd; 2975191783Srmacklem vnode_t vp; 2976191783Srmacklem int error = EINVAL; 2977191783Srmacklem 2978191783Srmacklem if (uap->flag & NFSSVC_PUBLICFH) { 2979191783Srmacklem NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 2980191783Srmacklem sizeof (fhandle_t)); 2981191783Srmacklem error = copyin(uap->argp, 2982191783Srmacklem &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 2983191783Srmacklem if (!error) 2984191783Srmacklem nfs_pubfhset = 1; 2985191783Srmacklem } else if (uap->flag & NFSSVC_V4ROOTEXPORT) { 2986191783Srmacklem error = copyin(uap->argp,(caddr_t)&export, 2987191783Srmacklem sizeof (struct nfsex_args)); 2988191783Srmacklem if (!error) 2989191783Srmacklem error = nfsrv_v4rootexport(&export, cred, p); 2990191783Srmacklem } else if (uap->flag & NFSSVC_NOPUBLICFH) { 2991191783Srmacklem nfs_pubfhset = 0; 2992191783Srmacklem error = 0; 2993191783Srmacklem } else if (uap->flag & NFSSVC_STABLERESTART) { 2994191783Srmacklem error = copyin(uap->argp, (caddr_t)&stablefd, 2995191783Srmacklem sizeof (int)); 2996191783Srmacklem if (!error) 2997191783Srmacklem error = fp_getfvp(p, stablefd, &fp, &vp); 2998191783Srmacklem if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 2999191783Srmacklem error = EBADF; 3000191783Srmacklem if (!error && newnfs_numnfsd != 0) 3001191783Srmacklem error = EPERM; 3002191783Srmacklem if (!error) { 3003191783Srmacklem nfsrv_stablefirst.nsf_fp = fp; 3004191783Srmacklem nfsrv_setupstable(p); 3005191783Srmacklem } 3006191783Srmacklem } else if (uap->flag & NFSSVC_ADMINREVOKE) { 3007191783Srmacklem error = copyin(uap->argp, (caddr_t)&adminrevoke, 3008191783Srmacklem sizeof (struct nfsd_clid)); 3009191783Srmacklem if (!error) 3010191783Srmacklem error = nfsrv_adminrevoke(&adminrevoke, p); 3011191783Srmacklem } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 3012191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplist, 3013191783Srmacklem sizeof (struct nfsd_dumplist)); 3014191783Srmacklem if (!error && (dumplist.ndl_size < 1 || 3015191783Srmacklem dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 3016191783Srmacklem error = EPERM; 3017191783Srmacklem if (!error) { 3018191783Srmacklem len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 3019191783Srmacklem dumpclients = (struct nfsd_dumpclients *)malloc(len, 3020191783Srmacklem M_TEMP, M_WAITOK); 3021191783Srmacklem nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 3022191783Srmacklem error = copyout(dumpclients, 3023191783Srmacklem CAST_USER_ADDR_T(dumplist.ndl_list), len); 3024191783Srmacklem free((caddr_t)dumpclients, M_TEMP); 3025191783Srmacklem } 3026191783Srmacklem } else if (uap->flag & NFSSVC_DUMPLOCKS) { 3027191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplocklist, 3028191783Srmacklem sizeof (struct nfsd_dumplocklist)); 3029191783Srmacklem if (!error && (dumplocklist.ndllck_size < 1 || 3030191783Srmacklem dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 3031191783Srmacklem error = EPERM; 3032191783Srmacklem if (!error) 3033191783Srmacklem error = nfsrv_lookupfilename(&nd, 3034191783Srmacklem dumplocklist.ndllck_fname, p); 3035191783Srmacklem if (!error) { 3036191783Srmacklem len = sizeof (struct nfsd_dumplocks) * 3037191783Srmacklem dumplocklist.ndllck_size; 3038191783Srmacklem dumplocks = (struct nfsd_dumplocks *)malloc(len, 3039191783Srmacklem M_TEMP, M_WAITOK); 3040191783Srmacklem nfsrv_dumplocks(nd.ni_vp, dumplocks, 3041191783Srmacklem dumplocklist.ndllck_size, p); 3042191783Srmacklem vput(nd.ni_vp); 3043191783Srmacklem error = copyout(dumplocks, 3044191783Srmacklem CAST_USER_ADDR_T(dumplocklist.ndllck_list), len); 3045191783Srmacklem free((caddr_t)dumplocks, M_TEMP); 3046191783Srmacklem } 3047191783Srmacklem } 3048191783Srmacklem return (error); 3049191783Srmacklem} 3050191783Srmacklem 3051192121Srmacklem/* 3052192121Srmacklem * Check exports. 3053192121Srmacklem * Returns 0 if ok, 1 otherwise. 3054192121Srmacklem */ 3055192121Srmacklemint 3056192121Srmacklemnfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 3057192121Srmacklem{ 3058192121Srmacklem int i; 3059192121Srmacklem 3060192121Srmacklem /* 3061192121Srmacklem * This seems odd, but allow the case where the security flavor 3062192121Srmacklem * list is empty. This happens when NFSv4 is traversing non-exported 3063192121Srmacklem * file systems. Exported file systems should always have a non-empty 3064192121Srmacklem * security flavor list. 3065192121Srmacklem */ 3066192121Srmacklem if (exp->nes_numsecflavor == 0) 3067192121Srmacklem return (0); 3068192121Srmacklem 3069192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) { 3070192121Srmacklem /* 3071192121Srmacklem * The tests for privacy and integrity must be first, 3072192121Srmacklem * since ND_GSS is set for everything but AUTH_SYS. 3073192121Srmacklem */ 3074192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 3075192121Srmacklem (nd->nd_flag & ND_GSSPRIVACY)) 3076192121Srmacklem return (0); 3077192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 3078192121Srmacklem (nd->nd_flag & ND_GSSINTEGRITY)) 3079192121Srmacklem return (0); 3080192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 3081192121Srmacklem (nd->nd_flag & ND_GSS)) 3082192121Srmacklem return (0); 3083192121Srmacklem if (exp->nes_secflavors[i] == AUTH_SYS && 3084192121Srmacklem (nd->nd_flag & ND_GSS) == 0) 3085192121Srmacklem return (0); 3086192121Srmacklem } 3087192121Srmacklem return (1); 3088192121Srmacklem} 3089192121Srmacklem 3090191783Srmacklemextern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 3091191783Srmacklem 3092191783Srmacklem/* 3093191783Srmacklem * Called once to initialize data structures... 3094191783Srmacklem */ 3095191783Srmacklemstatic int 3096191783Srmacklemnfsd_modevent(module_t mod, int type, void *data) 3097191783Srmacklem{ 3098191783Srmacklem int error = 0; 3099191783Srmacklem static int loaded = 0; 3100191783Srmacklem 3101191783Srmacklem switch (type) { 3102191783Srmacklem case MOD_LOAD: 3103191783Srmacklem if (loaded) 3104191783Srmacklem return (0); 3105191783Srmacklem newnfs_portinit(); 3106191783Srmacklem mtx_init(&nfs_cache_mutex, "nfs_cache_mutex", NULL, MTX_DEF); 3107191783Srmacklem mtx_init(&nfs_v4root_mutex, "nfs_v4root_mutex", NULL, MTX_DEF); 3108191783Srmacklem mtx_init(&nfsv4root_mnt.mnt_mtx, "struct mount mtx", NULL, 3109191783Srmacklem MTX_DEF); 3110191783Srmacklem lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0); 3111191783Srmacklem nfsrvd_initcache(); 3112191783Srmacklem nfsd_init(); 3113191783Srmacklem NFSD_LOCK(); 3114191783Srmacklem nfsrvd_init(0); 3115191783Srmacklem NFSD_UNLOCK(); 3116191783Srmacklem nfsd_mntinit(); 3117191783Srmacklem#ifdef VV_DISABLEDELEG 3118191783Srmacklem vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 3119191783Srmacklem vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 3120191783Srmacklem#endif 3121191783Srmacklem nfsd_call_servertimer = nfsrv_servertimer; 3122191783Srmacklem nfsd_call_nfsd = nfssvc_nfsd; 3123191783Srmacklem loaded = 1; 3124191783Srmacklem break; 3125191783Srmacklem 3126191783Srmacklem case MOD_UNLOAD: 3127191783Srmacklem if (newnfs_numnfsd != 0) { 3128191783Srmacklem error = EBUSY; 3129191783Srmacklem break; 3130191783Srmacklem } 3131191783Srmacklem 3132191783Srmacklem#ifdef VV_DISABLEDELEG 3133191783Srmacklem vn_deleg_ops.vndeleg_recall = NULL; 3134191783Srmacklem vn_deleg_ops.vndeleg_disable = NULL; 3135191783Srmacklem#endif 3136191783Srmacklem nfsd_call_servertimer = NULL; 3137191783Srmacklem nfsd_call_nfsd = NULL; 3138191783Srmacklem /* and get rid of the locks */ 3139191783Srmacklem mtx_destroy(&nfs_cache_mutex); 3140191783Srmacklem mtx_destroy(&nfs_v4root_mutex); 3141191783Srmacklem mtx_destroy(&nfsv4root_mnt.mnt_mtx); 3142191783Srmacklem lockdestroy(&nfsv4root_mnt.mnt_explock); 3143191783Srmacklem loaded = 0; 3144191783Srmacklem break; 3145191783Srmacklem default: 3146191783Srmacklem error = EOPNOTSUPP; 3147191783Srmacklem break; 3148191783Srmacklem } 3149191783Srmacklem return error; 3150191783Srmacklem} 3151191783Srmacklemstatic moduledata_t nfsd_mod = { 3152191783Srmacklem "nfsd", 3153191783Srmacklem nfsd_modevent, 3154191783Srmacklem NULL, 3155191783Srmacklem}; 3156191783SrmacklemDECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 3157191783Srmacklem 3158191783Srmacklem/* So that loader and kldload(2) can find us, wherever we are.. */ 3159191783SrmacklemMODULE_VERSION(nfsd, 1); 3160191783SrmacklemMODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 3161192574SrmacklemMODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 3162209191SrmacklemMODULE_DEPEND(nfsd, krpc, 1, 1, 1); 3163209191SrmacklemMODULE_DEPEND(nfsd, nfssvc, 1, 1, 1); 3164191783Srmacklem 3165