nfs_nfsdport.c revision 220507
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 220507 2011-04-09 23:55:27Z rmacklem $"); 36191783Srmacklem 37191783Srmacklem/* 38191783Srmacklem * Functions that perform the vfs operations required by the routines in 39191783Srmacklem * nfsd_serv.c. It is hoped that this change will make the server more 40191783Srmacklem * portable. 41191783Srmacklem */ 42191783Srmacklem 43191783Srmacklem#include <fs/nfs/nfsport.h> 44214255Srmacklem#include <sys/hash.h> 45191783Srmacklem#include <sys/sysctl.h> 46192503Srmacklem#include <nlm/nlm_prot.h> 47192503Srmacklem#include <nlm/nlm.h> 48191783Srmacklem 49219028SnetchildFEATURE(nfsd, "NFSv4 server"); 50219028Snetchild 51191783Srmacklemextern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1; 52191783Srmacklemextern int nfsrv_useacl; 53191783Srmacklemextern int newnfs_numnfsd; 54191783Srmacklemextern struct mount nfsv4root_mnt; 55191783Srmacklemextern struct nfsrv_stablefirst nfsrv_stablefirst; 56191783Srmacklemextern void (*nfsd_call_servertimer)(void); 57191783Srmacklemstruct vfsoptlist nfsv4root_opt, nfsv4root_newopt; 58191783SrmacklemNFSDLOCKMUTEX; 59191783Srmacklemstruct mtx nfs_cache_mutex; 60191783Srmacklemstruct mtx nfs_v4root_mutex; 61191783Srmacklemstruct nfsrvfh nfs_rootfh, nfs_pubfh; 62191783Srmacklemint nfs_pubfhset = 0, nfs_rootfhset = 0; 63217432Srmacklemstruct proc *nfsd_master_proc = NULL; 64217432Srmacklemstatic pid_t nfsd_master_pid = (pid_t)-1; 65217432Srmacklemstatic char nfsd_master_comm[MAXCOMLEN + 1]; 66217432Srmacklemstatic struct timeval nfsd_master_start; 67192503Srmacklemstatic uint32_t nfsv4_sysid = 0; 68191783Srmacklem 69192255Srmacklemstatic int nfssvc_srvcall(struct thread *, struct nfssvc_args *, 70192255Srmacklem struct ucred *); 71191783Srmacklem 72191783Srmacklemstatic int enable_crossmntpt = 1; 73191783Srmacklemstatic int nfs_commit_blks; 74191783Srmacklemstatic int nfs_commit_miss; 75191783Srmacklemextern int nfsrv_issuedelegs; 76192255Srmacklemextern int nfsrv_dolocallocks; 77192255Srmacklem 78191783SrmacklemSYSCTL_DECL(_vfs_newnfs); 79192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, mirrormnt, CTLFLAG_RW, &enable_crossmntpt, 80192255Srmacklem 0, "Enable nfsd to cross mount points"); 81192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 82192255Srmacklem 0, ""); 83192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 84192255Srmacklem 0, ""); 85192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, issue_delegations, CTLFLAG_RW, 86192255Srmacklem &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); 87192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, enable_locallocks, CTLFLAG_RW, 88192255Srmacklem &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files"); 89191783Srmacklem 90191783Srmacklem#define NUM_HEURISTIC 1017 91191783Srmacklem#define NHUSE_INIT 64 92191783Srmacklem#define NHUSE_INC 16 93191783Srmacklem#define NHUSE_MAX 2048 94191783Srmacklem 95191783Srmacklemstatic struct nfsheur { 96191783Srmacklem struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 97191783Srmacklem off_t nh_nextr; /* next offset for sequential detection */ 98191783Srmacklem int nh_use; /* use count for selection */ 99191783Srmacklem int nh_seqcount; /* heuristic */ 100191783Srmacklem} nfsheur[NUM_HEURISTIC]; 101191783Srmacklem 102191783Srmacklem 103191783Srmacklem/* 104191783Srmacklem * Get attributes into nfsvattr structure. 105191783Srmacklem */ 106191783Srmacklemint 107191783Srmacklemnfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 108216693Srmacklem struct thread *p, int vpislocked) 109191783Srmacklem{ 110191783Srmacklem int error, lockedit = 0; 111191783Srmacklem 112216693Srmacklem if (vpislocked == 0) { 113216693Srmacklem /* 114216693Srmacklem * When vpislocked == 0, the vnode is either exclusively 115216693Srmacklem * locked by this thread or not locked by this thread. 116216693Srmacklem * As such, shared lock it, if not exclusively locked. 117216693Srmacklem */ 118216693Srmacklem if (VOP_ISLOCKED(vp) != LK_EXCLUSIVE) { 119216693Srmacklem lockedit = 1; 120216693Srmacklem vn_lock(vp, LK_SHARED | LK_RETRY); 121216693Srmacklem } 122191783Srmacklem } 123191783Srmacklem error = VOP_GETATTR(vp, &nvap->na_vattr, cred); 124216693Srmacklem if (lockedit != 0) 125216693Srmacklem VOP_UNLOCK(vp, 0); 126191783Srmacklem return (error); 127191783Srmacklem} 128191783Srmacklem 129191783Srmacklem/* 130191783Srmacklem * Get a file handle for a vnode. 131191783Srmacklem */ 132191783Srmacklemint 133191783Srmacklemnfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 134191783Srmacklem{ 135191783Srmacklem int error; 136191783Srmacklem 137191783Srmacklem NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 138191783Srmacklem fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 139191783Srmacklem error = VOP_VPTOFH(vp, &fhp->fh_fid); 140191783Srmacklem return (error); 141191783Srmacklem} 142191783Srmacklem 143191783Srmacklem/* 144191783Srmacklem * Perform access checking for vnodes obtained from file handles that would 145191783Srmacklem * refer to files already opened by a Unix client. You cannot just use 146200999Srmacklem * vn_writechk() and VOP_ACCESSX() for two reasons. 147200999Srmacklem * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write 148200999Srmacklem * case. 149191783Srmacklem * 2 - The owner is to be given access irrespective of mode bits for some 150191783Srmacklem * operations, so that processes that chmod after opening a file don't 151191783Srmacklem * break. 152191783Srmacklem */ 153191783Srmacklemint 154200999Srmacklemnfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred, 155200999Srmacklem struct nfsexstuff *exp, struct thread *p, int override, int vpislocked, 156200999Srmacklem u_int32_t *supportedtypep) 157191783Srmacklem{ 158191783Srmacklem struct vattr vattr; 159191783Srmacklem int error = 0, getret = 0; 160191783Srmacklem 161216893Srmacklem if (vpislocked == 0) { 162216893Srmacklem if (vn_lock(vp, LK_SHARED) != 0) 163216893Srmacklem return (EPERM); 164216893Srmacklem } 165191783Srmacklem if (accmode & VWRITE) { 166191783Srmacklem /* Just vn_writechk() changed to check rdonly */ 167191783Srmacklem /* 168191783Srmacklem * Disallow write attempts on read-only file systems; 169191783Srmacklem * unless the file is a socket or a block or character 170191783Srmacklem * device resident on the file system. 171191783Srmacklem */ 172191783Srmacklem if (NFSVNO_EXRDONLY(exp) || 173200999Srmacklem (vp->v_mount->mnt_flag & MNT_RDONLY)) { 174191783Srmacklem switch (vp->v_type) { 175191783Srmacklem case VREG: 176191783Srmacklem case VDIR: 177191783Srmacklem case VLNK: 178216893Srmacklem error = EROFS; 179191783Srmacklem default: 180191783Srmacklem break; 181191783Srmacklem } 182191783Srmacklem } 183191783Srmacklem /* 184191783Srmacklem * If there's shared text associated with 185191783Srmacklem * the inode, try to free it up once. If 186191783Srmacklem * we fail, we can't allow writing. 187191783Srmacklem */ 188216893Srmacklem if ((vp->v_vflag & VV_TEXT) != 0 && error == 0) 189216893Srmacklem error = ETXTBSY; 190191783Srmacklem } 191216893Srmacklem if (error != 0) { 192216893Srmacklem if (vpislocked == 0) 193216893Srmacklem VOP_UNLOCK(vp, 0); 194216893Srmacklem return (error); 195216893Srmacklem } 196191783Srmacklem 197191783Srmacklem /* 198191783Srmacklem * Should the override still be applied when ACLs are enabled? 199191783Srmacklem */ 200200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 201200999Srmacklem if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) { 202200999Srmacklem /* 203200999Srmacklem * Try again with VEXPLICIT_DENY, to see if the test for 204200999Srmacklem * deletion is supported. 205200999Srmacklem */ 206200999Srmacklem error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p); 207200999Srmacklem if (error == 0) { 208200999Srmacklem if (vp->v_type == VDIR) { 209200999Srmacklem accmode &= ~(VDELETE | VDELETE_CHILD); 210200999Srmacklem accmode |= VWRITE; 211200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 212200999Srmacklem } else if (supportedtypep != NULL) { 213200999Srmacklem *supportedtypep &= ~NFSACCESS_DELETE; 214200999Srmacklem } 215200999Srmacklem } 216200999Srmacklem } 217191783Srmacklem 218191783Srmacklem /* 219191783Srmacklem * Allow certain operations for the owner (reads and writes 220191783Srmacklem * on files that are already open). 221191783Srmacklem */ 222191783Srmacklem if (override != NFSACCCHK_NOOVERRIDE && 223191783Srmacklem (error == EPERM || error == EACCES)) { 224191783Srmacklem if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 225191783Srmacklem error = 0; 226191783Srmacklem else if (override & NFSACCCHK_ALLOWOWNER) { 227191783Srmacklem getret = VOP_GETATTR(vp, &vattr, cred); 228191783Srmacklem if (getret == 0 && cred->cr_uid == vattr.va_uid) 229191783Srmacklem error = 0; 230191783Srmacklem } 231191783Srmacklem } 232191783Srmacklem if (vpislocked == 0) 233216700Srmacklem VOP_UNLOCK(vp, 0); 234191783Srmacklem return (error); 235191783Srmacklem} 236191783Srmacklem 237191783Srmacklem/* 238191783Srmacklem * Set attribute(s) vnop. 239191783Srmacklem */ 240191783Srmacklemint 241191783Srmacklemnfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 242191783Srmacklem struct thread *p, struct nfsexstuff *exp) 243191783Srmacklem{ 244191783Srmacklem int error; 245191783Srmacklem 246191783Srmacklem error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 247191783Srmacklem return (error); 248191783Srmacklem} 249191783Srmacklem 250191783Srmacklem/* 251191783Srmacklem * Set up nameidata for a lookup() call and do it 252191783Srmacklem * For the cases where we are crossing mount points 253191783Srmacklem * (looking up the public fh path or the v4 root path when 254191783Srmacklem * not using a pseudo-root fs), set/release the Giant lock, 255191783Srmacklem * as required. 256191783Srmacklem */ 257191783Srmacklemint 258191783Srmacklemnfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 259191783Srmacklem struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p, 260191783Srmacklem struct vnode **retdirp) 261191783Srmacklem{ 262191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 263191783Srmacklem int i; 264191783Srmacklem struct iovec aiov; 265191783Srmacklem struct uio auio; 266191783Srmacklem int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 267191783Srmacklem int error = 0, crossmnt; 268191783Srmacklem char *cp; 269191783Srmacklem 270191783Srmacklem *retdirp = NULL; 271191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 272191783Srmacklem /* 273191783Srmacklem * Extract and set starting directory. 274191783Srmacklem */ 275191783Srmacklem if (dp->v_type != VDIR) { 276191783Srmacklem if (islocked) 277191783Srmacklem vput(dp); 278191783Srmacklem else 279191783Srmacklem vrele(dp); 280191783Srmacklem nfsvno_relpathbuf(ndp); 281191783Srmacklem return (ENOTDIR); 282191783Srmacklem } 283191783Srmacklem if (islocked) 284191783Srmacklem NFSVOPUNLOCK(dp, 0, p); 285191783Srmacklem VREF(dp); 286191783Srmacklem *retdirp = dp; 287191783Srmacklem if (NFSVNO_EXRDONLY(exp)) 288191783Srmacklem cnp->cn_flags |= RDONLY; 289191783Srmacklem ndp->ni_segflg = UIO_SYSSPACE; 290191783Srmacklem crossmnt = 1; 291191783Srmacklem 292191783Srmacklem if (nd->nd_flag & ND_PUBLOOKUP) { 293191783Srmacklem ndp->ni_loopcnt = 0; 294191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 295191783Srmacklem vrele(dp); 296191783Srmacklem /* 297191783Srmacklem * Check for degenerate pathnames here, since lookup() 298191783Srmacklem * panics on them. 299191783Srmacklem */ 300191783Srmacklem for (i = 1; i < ndp->ni_pathlen; i++) 301191783Srmacklem if (cnp->cn_pnbuf[i] != '/') 302191783Srmacklem break; 303191783Srmacklem if (i == ndp->ni_pathlen) { 304191783Srmacklem error = NFSERR_ACCES; 305191783Srmacklem goto out; 306191783Srmacklem } 307191783Srmacklem dp = rootvnode; 308191783Srmacklem VREF(dp); 309191783Srmacklem } 310191783Srmacklem } else if ((enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 311191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) { 312191783Srmacklem /* 313191783Srmacklem * Only cross mount points for NFSv4 when doing a 314191783Srmacklem * mount while traversing the file system above 315191783Srmacklem * the mount point, unless enable_crossmntpt is set. 316191783Srmacklem */ 317191783Srmacklem cnp->cn_flags |= NOCROSSMOUNT; 318191783Srmacklem crossmnt = 0; 319191783Srmacklem } 320191783Srmacklem 321191783Srmacklem /* 322191783Srmacklem * Initialize for scan, set ni_startdir and bump ref on dp again 323191783Srmacklem * becuase lookup() will dereference ni_startdir. 324191783Srmacklem */ 325191783Srmacklem 326191783Srmacklem cnp->cn_thread = p; 327191783Srmacklem ndp->ni_startdir = dp; 328191783Srmacklem ndp->ni_rootdir = rootvnode; 329191783Srmacklem 330191783Srmacklem if (!lockleaf) 331191783Srmacklem cnp->cn_flags |= LOCKLEAF; 332191783Srmacklem for (;;) { 333191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 334191783Srmacklem /* 335191783Srmacklem * Call lookup() to do the real work. If an error occurs, 336191783Srmacklem * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 337191783Srmacklem * we do not have to dereference anything before returning. 338191783Srmacklem * In either case ni_startdir will be dereferenced and NULLed 339191783Srmacklem * out. 340191783Srmacklem */ 341191783Srmacklem error = lookup(ndp); 342191783Srmacklem if (error) 343191783Srmacklem break; 344191783Srmacklem 345191783Srmacklem /* 346191783Srmacklem * Check for encountering a symbolic link. Trivial 347191783Srmacklem * termination occurs if no symlink encountered. 348191783Srmacklem */ 349191783Srmacklem if ((cnp->cn_flags & ISSYMLINK) == 0) { 350191783Srmacklem if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0) 351191783Srmacklem nfsvno_relpathbuf(ndp); 352191783Srmacklem if (ndp->ni_vp && !lockleaf) 353191783Srmacklem NFSVOPUNLOCK(ndp->ni_vp, 0, p); 354191783Srmacklem break; 355191783Srmacklem } 356191783Srmacklem 357191783Srmacklem /* 358191783Srmacklem * Validate symlink 359191783Srmacklem */ 360191783Srmacklem if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 361191783Srmacklem NFSVOPUNLOCK(ndp->ni_dvp, 0, p); 362191783Srmacklem if (!(nd->nd_flag & ND_PUBLOOKUP)) { 363191783Srmacklem error = EINVAL; 364191783Srmacklem goto badlink2; 365191783Srmacklem } 366191783Srmacklem 367191783Srmacklem if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 368191783Srmacklem error = ELOOP; 369191783Srmacklem goto badlink2; 370191783Srmacklem } 371191783Srmacklem if (ndp->ni_pathlen > 1) 372191783Srmacklem cp = uma_zalloc(namei_zone, M_WAITOK); 373191783Srmacklem else 374191783Srmacklem cp = cnp->cn_pnbuf; 375191783Srmacklem aiov.iov_base = cp; 376191783Srmacklem aiov.iov_len = MAXPATHLEN; 377191783Srmacklem auio.uio_iov = &aiov; 378191783Srmacklem auio.uio_iovcnt = 1; 379191783Srmacklem auio.uio_offset = 0; 380191783Srmacklem auio.uio_rw = UIO_READ; 381191783Srmacklem auio.uio_segflg = UIO_SYSSPACE; 382191783Srmacklem auio.uio_td = NULL; 383191783Srmacklem auio.uio_resid = MAXPATHLEN; 384191783Srmacklem error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 385191783Srmacklem if (error) { 386191783Srmacklem badlink1: 387191783Srmacklem if (ndp->ni_pathlen > 1) 388191783Srmacklem uma_zfree(namei_zone, cp); 389191783Srmacklem badlink2: 390191783Srmacklem vrele(ndp->ni_dvp); 391191783Srmacklem vput(ndp->ni_vp); 392191783Srmacklem break; 393191783Srmacklem } 394191783Srmacklem linklen = MAXPATHLEN - auio.uio_resid; 395191783Srmacklem if (linklen == 0) { 396191783Srmacklem error = ENOENT; 397191783Srmacklem goto badlink1; 398191783Srmacklem } 399191783Srmacklem if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 400191783Srmacklem error = ENAMETOOLONG; 401191783Srmacklem goto badlink1; 402191783Srmacklem } 403191783Srmacklem 404191783Srmacklem /* 405191783Srmacklem * Adjust or replace path 406191783Srmacklem */ 407191783Srmacklem if (ndp->ni_pathlen > 1) { 408191783Srmacklem NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 409191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 410191783Srmacklem cnp->cn_pnbuf = cp; 411191783Srmacklem } else 412191783Srmacklem cnp->cn_pnbuf[linklen] = '\0'; 413191783Srmacklem ndp->ni_pathlen += linklen; 414191783Srmacklem 415191783Srmacklem /* 416191783Srmacklem * Cleanup refs for next loop and check if root directory 417191783Srmacklem * should replace current directory. Normally ni_dvp 418191783Srmacklem * becomes the new base directory and is cleaned up when 419191783Srmacklem * we loop. Explicitly null pointers after invalidation 420191783Srmacklem * to clarify operation. 421191783Srmacklem */ 422191783Srmacklem vput(ndp->ni_vp); 423191783Srmacklem ndp->ni_vp = NULL; 424191783Srmacklem 425191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 426191783Srmacklem vrele(ndp->ni_dvp); 427191783Srmacklem ndp->ni_dvp = ndp->ni_rootdir; 428191783Srmacklem VREF(ndp->ni_dvp); 429191783Srmacklem } 430191783Srmacklem ndp->ni_startdir = ndp->ni_dvp; 431191783Srmacklem ndp->ni_dvp = NULL; 432191783Srmacklem } 433191783Srmacklem if (!lockleaf) 434191783Srmacklem cnp->cn_flags &= ~LOCKLEAF; 435191783Srmacklem 436191783Srmacklemout: 437191783Srmacklem if (error) { 438191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 439191783Srmacklem ndp->ni_vp = NULL; 440191783Srmacklem ndp->ni_dvp = NULL; 441191783Srmacklem ndp->ni_startdir = NULL; 442191783Srmacklem cnp->cn_flags &= ~HASBUF; 443191783Srmacklem } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 444191783Srmacklem ndp->ni_dvp = NULL; 445191783Srmacklem } 446191783Srmacklem return (error); 447191783Srmacklem} 448191783Srmacklem 449191783Srmacklem/* 450191783Srmacklem * Set up a pathname buffer and return a pointer to it and, optionally 451191783Srmacklem * set a hash pointer. 452191783Srmacklem */ 453191783Srmacklemvoid 454191783Srmacklemnfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 455191783Srmacklem{ 456191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 457191783Srmacklem 458191783Srmacklem cnp->cn_flags |= (NOMACCHECK | HASBUF); 459191783Srmacklem cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 460191783Srmacklem if (hashpp != NULL) 461191783Srmacklem *hashpp = NULL; 462191783Srmacklem *bufpp = cnp->cn_pnbuf; 463191783Srmacklem} 464191783Srmacklem 465191783Srmacklem/* 466191783Srmacklem * Release the above path buffer, if not released by nfsvno_namei(). 467191783Srmacklem */ 468191783Srmacklemvoid 469191783Srmacklemnfsvno_relpathbuf(struct nameidata *ndp) 470191783Srmacklem{ 471191783Srmacklem 472191783Srmacklem if ((ndp->ni_cnd.cn_flags & HASBUF) == 0) 473191783Srmacklem panic("nfsrelpath"); 474191783Srmacklem uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 475191783Srmacklem ndp->ni_cnd.cn_flags &= ~HASBUF; 476191783Srmacklem} 477191783Srmacklem 478191783Srmacklem/* 479191783Srmacklem * Readlink vnode op into an mbuf list. 480191783Srmacklem */ 481191783Srmacklemint 482191783Srmacklemnfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p, 483191783Srmacklem struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 484191783Srmacklem{ 485191783Srmacklem struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; 486191783Srmacklem struct iovec *ivp = iv; 487191783Srmacklem struct uio io, *uiop = &io; 488191783Srmacklem struct mbuf *mp, *mp2 = NULL, *mp3 = NULL; 489191783Srmacklem int i, len, tlen, error; 490191783Srmacklem 491191783Srmacklem len = 0; 492191783Srmacklem i = 0; 493191783Srmacklem while (len < NFS_MAXPATHLEN) { 494191783Srmacklem NFSMGET(mp); 495191783Srmacklem MCLGET(mp, M_WAIT); 496191783Srmacklem mp->m_len = NFSMSIZ(mp); 497191783Srmacklem if (len == 0) { 498191783Srmacklem mp3 = mp2 = mp; 499191783Srmacklem } else { 500191783Srmacklem mp2->m_next = mp; 501191783Srmacklem mp2 = mp; 502191783Srmacklem } 503191783Srmacklem if ((len + mp->m_len) > NFS_MAXPATHLEN) { 504191783Srmacklem mp->m_len = NFS_MAXPATHLEN - len; 505191783Srmacklem len = NFS_MAXPATHLEN; 506191783Srmacklem } else { 507191783Srmacklem len += mp->m_len; 508191783Srmacklem } 509191783Srmacklem ivp->iov_base = mtod(mp, caddr_t); 510191783Srmacklem ivp->iov_len = mp->m_len; 511191783Srmacklem i++; 512191783Srmacklem ivp++; 513191783Srmacklem } 514191783Srmacklem uiop->uio_iov = iv; 515191783Srmacklem uiop->uio_iovcnt = i; 516191783Srmacklem uiop->uio_offset = 0; 517191783Srmacklem uiop->uio_resid = len; 518191783Srmacklem uiop->uio_rw = UIO_READ; 519191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 520191783Srmacklem uiop->uio_td = NULL; 521191783Srmacklem error = VOP_READLINK(vp, uiop, cred); 522191783Srmacklem if (error) { 523191783Srmacklem m_freem(mp3); 524191783Srmacklem *lenp = 0; 525191783Srmacklem return (error); 526191783Srmacklem } 527191783Srmacklem if (uiop->uio_resid > 0) { 528191783Srmacklem len -= uiop->uio_resid; 529191783Srmacklem tlen = NFSM_RNDUP(len); 530191783Srmacklem nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len); 531191783Srmacklem } 532191783Srmacklem *lenp = len; 533191783Srmacklem *mpp = mp3; 534191783Srmacklem *mpendp = mp; 535191783Srmacklem return (0); 536191783Srmacklem} 537191783Srmacklem 538191783Srmacklem/* 539191783Srmacklem * Read vnode op call into mbuf list. 540191783Srmacklem */ 541191783Srmacklemint 542191783Srmacklemnfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 543191783Srmacklem struct thread *p, struct mbuf **mpp, struct mbuf **mpendp) 544191783Srmacklem{ 545191783Srmacklem struct mbuf *m; 546191783Srmacklem int i; 547191783Srmacklem struct iovec *iv; 548191783Srmacklem struct iovec *iv2; 549191783Srmacklem int error = 0, len, left, siz, tlen, ioflag = 0, hi, try = 32; 550191783Srmacklem struct mbuf *m2 = NULL, *m3; 551191783Srmacklem struct uio io, *uiop = &io; 552191783Srmacklem struct nfsheur *nh; 553191783Srmacklem 554191783Srmacklem /* 555191783Srmacklem * Calculate seqcount for heuristic 556191783Srmacklem */ 557191783Srmacklem /* 558191783Srmacklem * Locate best candidate 559191783Srmacklem */ 560191783Srmacklem 561191783Srmacklem hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 562191783Srmacklem nh = &nfsheur[hi]; 563191783Srmacklem 564191783Srmacklem while (try--) { 565191783Srmacklem if (nfsheur[hi].nh_vp == vp) { 566191783Srmacklem nh = &nfsheur[hi]; 567191783Srmacklem break; 568191783Srmacklem } 569191783Srmacklem if (nfsheur[hi].nh_use > 0) 570191783Srmacklem --nfsheur[hi].nh_use; 571191783Srmacklem hi = (hi + 1) % NUM_HEURISTIC; 572191783Srmacklem if (nfsheur[hi].nh_use < nh->nh_use) 573191783Srmacklem nh = &nfsheur[hi]; 574191783Srmacklem } 575191783Srmacklem 576191783Srmacklem if (nh->nh_vp != vp) { 577191783Srmacklem nh->nh_vp = vp; 578191783Srmacklem nh->nh_nextr = off; 579191783Srmacklem nh->nh_use = NHUSE_INIT; 580191783Srmacklem if (off == 0) 581191783Srmacklem nh->nh_seqcount = 4; 582191783Srmacklem else 583191783Srmacklem nh->nh_seqcount = 1; 584191783Srmacklem } 585191783Srmacklem 586191783Srmacklem /* 587191783Srmacklem * Calculate heuristic 588191783Srmacklem */ 589191783Srmacklem 590191783Srmacklem if ((off == 0 && nh->nh_seqcount > 0) || off == nh->nh_nextr) { 591191783Srmacklem if (++nh->nh_seqcount > IO_SEQMAX) 592191783Srmacklem nh->nh_seqcount = IO_SEQMAX; 593191783Srmacklem } else if (nh->nh_seqcount > 1) { 594191783Srmacklem nh->nh_seqcount = 1; 595191783Srmacklem } else { 596191783Srmacklem nh->nh_seqcount = 0; 597191783Srmacklem } 598191783Srmacklem nh->nh_use += NHUSE_INC; 599191783Srmacklem if (nh->nh_use > NHUSE_MAX) 600191783Srmacklem nh->nh_use = NHUSE_MAX; 601191783Srmacklem ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 602191783Srmacklem 603191783Srmacklem len = left = NFSM_RNDUP(cnt); 604191783Srmacklem m3 = NULL; 605191783Srmacklem /* 606191783Srmacklem * Generate the mbuf list with the uio_iov ref. to it. 607191783Srmacklem */ 608191783Srmacklem i = 0; 609191783Srmacklem while (left > 0) { 610191783Srmacklem NFSMGET(m); 611191783Srmacklem MCLGET(m, M_WAIT); 612191783Srmacklem m->m_len = 0; 613191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 614191783Srmacklem left -= siz; 615191783Srmacklem i++; 616191783Srmacklem if (m3) 617191783Srmacklem m2->m_next = m; 618191783Srmacklem else 619191783Srmacklem m3 = m; 620191783Srmacklem m2 = m; 621191783Srmacklem } 622191783Srmacklem MALLOC(iv, struct iovec *, i * sizeof (struct iovec), 623191783Srmacklem M_TEMP, M_WAITOK); 624191783Srmacklem uiop->uio_iov = iv2 = iv; 625191783Srmacklem m = m3; 626191783Srmacklem left = len; 627191783Srmacklem i = 0; 628191783Srmacklem while (left > 0) { 629191783Srmacklem if (m == NULL) 630191783Srmacklem panic("nfsvno_read iov"); 631191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 632191783Srmacklem if (siz > 0) { 633191783Srmacklem iv->iov_base = mtod(m, caddr_t) + m->m_len; 634191783Srmacklem iv->iov_len = siz; 635191783Srmacklem m->m_len += siz; 636191783Srmacklem left -= siz; 637191783Srmacklem iv++; 638191783Srmacklem i++; 639191783Srmacklem } 640191783Srmacklem m = m->m_next; 641191783Srmacklem } 642191783Srmacklem uiop->uio_iovcnt = i; 643191783Srmacklem uiop->uio_offset = off; 644191783Srmacklem uiop->uio_resid = len; 645191783Srmacklem uiop->uio_rw = UIO_READ; 646191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 647191783Srmacklem error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 648191783Srmacklem FREE((caddr_t)iv2, M_TEMP); 649191783Srmacklem if (error) { 650191783Srmacklem m_freem(m3); 651191783Srmacklem *mpp = NULL; 652191783Srmacklem return (error); 653191783Srmacklem } 654191783Srmacklem tlen = len - uiop->uio_resid; 655191783Srmacklem cnt = cnt < tlen ? cnt : tlen; 656191783Srmacklem tlen = NFSM_RNDUP(cnt); 657191783Srmacklem if (tlen == 0) { 658191783Srmacklem m_freem(m3); 659191783Srmacklem m3 = NULL; 660191783Srmacklem } else if (len != tlen || tlen != cnt) 661191783Srmacklem nfsrv_adj(m3, len - tlen, tlen - cnt); 662191783Srmacklem *mpp = m3; 663191783Srmacklem *mpendp = m2; 664191783Srmacklem return (0); 665191783Srmacklem} 666191783Srmacklem 667191783Srmacklem/* 668191783Srmacklem * Write vnode op from an mbuf list. 669191783Srmacklem */ 670191783Srmacklemint 671191783Srmacklemnfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable, 672191783Srmacklem struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 673191783Srmacklem{ 674191783Srmacklem struct iovec *ivp; 675191783Srmacklem int i, len; 676191783Srmacklem struct iovec *iv; 677191783Srmacklem int ioflags, error; 678191783Srmacklem struct uio io, *uiop = &io; 679191783Srmacklem 680191783Srmacklem MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP, 681191783Srmacklem M_WAITOK); 682191783Srmacklem uiop->uio_iov = iv = ivp; 683191783Srmacklem uiop->uio_iovcnt = cnt; 684191783Srmacklem i = mtod(mp, caddr_t) + mp->m_len - cp; 685191783Srmacklem len = retlen; 686191783Srmacklem while (len > 0) { 687191783Srmacklem if (mp == NULL) 688191783Srmacklem panic("nfsvno_write"); 689191783Srmacklem if (i > 0) { 690191783Srmacklem i = min(i, len); 691191783Srmacklem ivp->iov_base = cp; 692191783Srmacklem ivp->iov_len = i; 693191783Srmacklem ivp++; 694191783Srmacklem len -= i; 695191783Srmacklem } 696191783Srmacklem mp = mp->m_next; 697191783Srmacklem if (mp) { 698191783Srmacklem i = mp->m_len; 699191783Srmacklem cp = mtod(mp, caddr_t); 700191783Srmacklem } 701191783Srmacklem } 702191783Srmacklem 703191783Srmacklem if (stable == NFSWRITE_UNSTABLE) 704191783Srmacklem ioflags = IO_NODELOCKED; 705191783Srmacklem else 706191783Srmacklem ioflags = (IO_SYNC | IO_NODELOCKED); 707191783Srmacklem uiop->uio_resid = retlen; 708191783Srmacklem uiop->uio_rw = UIO_WRITE; 709191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 710191783Srmacklem NFSUIOPROC(uiop, p); 711191783Srmacklem uiop->uio_offset = off; 712191783Srmacklem error = VOP_WRITE(vp, uiop, ioflags, cred); 713191783Srmacklem FREE((caddr_t)iv, M_TEMP); 714191783Srmacklem return (error); 715191783Srmacklem} 716191783Srmacklem 717191783Srmacklem/* 718191783Srmacklem * Common code for creating a regular file (plus special files for V2). 719191783Srmacklem */ 720191783Srmacklemint 721191783Srmacklemnfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 722191783Srmacklem struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 723199616Srmacklem int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp) 724191783Srmacklem{ 725191783Srmacklem u_quad_t tempsize; 726191783Srmacklem int error; 727191783Srmacklem 728191783Srmacklem error = nd->nd_repstat; 729191783Srmacklem if (!error && ndp->ni_vp == NULL) { 730191783Srmacklem if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 731191783Srmacklem vrele(ndp->ni_startdir); 732191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, 733191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 734191783Srmacklem vput(ndp->ni_dvp); 735191783Srmacklem nfsvno_relpathbuf(ndp); 736191783Srmacklem if (!error) { 737191783Srmacklem if (*exclusive_flagp) { 738191783Srmacklem *exclusive_flagp = 0; 739191783Srmacklem NFSVNO_ATTRINIT(nvap); 740199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 741199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 742191783Srmacklem error = VOP_SETATTR(ndp->ni_vp, 743191783Srmacklem &nvap->na_vattr, nd->nd_cred); 744191783Srmacklem } 745191783Srmacklem } 746191783Srmacklem /* 747191783Srmacklem * NFS V2 Only. nfsrvd_mknod() does this for V3. 748191783Srmacklem * (This implies, just get out on an error.) 749191783Srmacklem */ 750191783Srmacklem } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 751191783Srmacklem nvap->na_type == VFIFO) { 752191783Srmacklem if (nvap->na_type == VCHR && rdev == 0xffffffff) 753191783Srmacklem nvap->na_type = VFIFO; 754191783Srmacklem if (nvap->na_type != VFIFO && 755191783Srmacklem (error = priv_check_cred(nd->nd_cred, 756191783Srmacklem PRIV_VFS_MKNOD_DEV, 0))) { 757191783Srmacklem vrele(ndp->ni_startdir); 758191783Srmacklem nfsvno_relpathbuf(ndp); 759191783Srmacklem vput(ndp->ni_dvp); 760191783Srmacklem return (error); 761191783Srmacklem } 762191783Srmacklem nvap->na_rdev = rdev; 763191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 764191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 765191783Srmacklem vput(ndp->ni_dvp); 766191783Srmacklem nfsvno_relpathbuf(ndp); 767191783Srmacklem if (error) { 768191783Srmacklem vrele(ndp->ni_startdir); 769191783Srmacklem return (error); 770191783Srmacklem } 771191783Srmacklem } else { 772191783Srmacklem vrele(ndp->ni_startdir); 773191783Srmacklem nfsvno_relpathbuf(ndp); 774191783Srmacklem vput(ndp->ni_dvp); 775191783Srmacklem return (ENXIO); 776191783Srmacklem } 777191783Srmacklem *vpp = ndp->ni_vp; 778191783Srmacklem } else { 779191783Srmacklem /* 780191783Srmacklem * Handle cases where error is already set and/or 781191783Srmacklem * the file exists. 782191783Srmacklem * 1 - clean up the lookup 783191783Srmacklem * 2 - iff !error and na_size set, truncate it 784191783Srmacklem */ 785191783Srmacklem vrele(ndp->ni_startdir); 786191783Srmacklem nfsvno_relpathbuf(ndp); 787191783Srmacklem *vpp = ndp->ni_vp; 788191783Srmacklem if (ndp->ni_dvp == *vpp) 789191783Srmacklem vrele(ndp->ni_dvp); 790191783Srmacklem else 791191783Srmacklem vput(ndp->ni_dvp); 792191783Srmacklem if (!error && nvap->na_size != VNOVAL) { 793200999Srmacklem error = nfsvno_accchk(*vpp, VWRITE, 794191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 795200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 796191783Srmacklem if (!error) { 797191783Srmacklem tempsize = nvap->na_size; 798191783Srmacklem NFSVNO_ATTRINIT(nvap); 799191783Srmacklem nvap->na_size = tempsize; 800191783Srmacklem error = VOP_SETATTR(*vpp, 801191783Srmacklem &nvap->na_vattr, nd->nd_cred); 802191783Srmacklem } 803191783Srmacklem } 804191783Srmacklem if (error) 805191783Srmacklem vput(*vpp); 806191783Srmacklem } 807191783Srmacklem return (error); 808191783Srmacklem} 809191783Srmacklem 810191783Srmacklem/* 811191783Srmacklem * Do a mknod vnode op. 812191783Srmacklem */ 813191783Srmacklemint 814191783Srmacklemnfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, 815191783Srmacklem struct thread *p) 816191783Srmacklem{ 817191783Srmacklem int error = 0; 818191783Srmacklem enum vtype vtyp; 819191783Srmacklem 820191783Srmacklem vtyp = nvap->na_type; 821191783Srmacklem /* 822191783Srmacklem * Iff doesn't exist, create it. 823191783Srmacklem */ 824191783Srmacklem if (ndp->ni_vp) { 825191783Srmacklem vrele(ndp->ni_startdir); 826191783Srmacklem nfsvno_relpathbuf(ndp); 827191783Srmacklem vput(ndp->ni_dvp); 828191783Srmacklem vrele(ndp->ni_vp); 829191783Srmacklem return (EEXIST); 830191783Srmacklem } 831191783Srmacklem if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { 832191783Srmacklem vrele(ndp->ni_startdir); 833191783Srmacklem nfsvno_relpathbuf(ndp); 834191783Srmacklem vput(ndp->ni_dvp); 835191783Srmacklem return (NFSERR_BADTYPE); 836191783Srmacklem } 837191783Srmacklem if (vtyp == VSOCK) { 838191783Srmacklem vrele(ndp->ni_startdir); 839191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, 840191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 841191783Srmacklem vput(ndp->ni_dvp); 842191783Srmacklem nfsvno_relpathbuf(ndp); 843191783Srmacklem } else { 844191783Srmacklem if (nvap->na_type != VFIFO && 845191783Srmacklem (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) { 846191783Srmacklem vrele(ndp->ni_startdir); 847191783Srmacklem nfsvno_relpathbuf(ndp); 848191783Srmacklem vput(ndp->ni_dvp); 849191783Srmacklem return (error); 850191783Srmacklem } 851191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 852191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 853191783Srmacklem vput(ndp->ni_dvp); 854191783Srmacklem nfsvno_relpathbuf(ndp); 855216898Srmacklem vrele(ndp->ni_startdir); 856191783Srmacklem /* 857191783Srmacklem * Since VOP_MKNOD returns the ni_vp, I can't 858191783Srmacklem * see any reason to do the lookup. 859191783Srmacklem */ 860191783Srmacklem } 861191783Srmacklem return (error); 862191783Srmacklem} 863191783Srmacklem 864191783Srmacklem/* 865191783Srmacklem * Mkdir vnode op. 866191783Srmacklem */ 867191783Srmacklemint 868191783Srmacklemnfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, 869191783Srmacklem struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 870191783Srmacklem{ 871191783Srmacklem int error = 0; 872191783Srmacklem 873191783Srmacklem if (ndp->ni_vp != NULL) { 874191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 875191783Srmacklem vrele(ndp->ni_dvp); 876191783Srmacklem else 877191783Srmacklem vput(ndp->ni_dvp); 878191783Srmacklem vrele(ndp->ni_vp); 879206063Srmacklem nfsvno_relpathbuf(ndp); 880191783Srmacklem return (EEXIST); 881191783Srmacklem } 882191783Srmacklem error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 883191783Srmacklem &nvap->na_vattr); 884191783Srmacklem vput(ndp->ni_dvp); 885191783Srmacklem nfsvno_relpathbuf(ndp); 886191783Srmacklem return (error); 887191783Srmacklem} 888191783Srmacklem 889191783Srmacklem/* 890191783Srmacklem * symlink vnode op. 891191783Srmacklem */ 892191783Srmacklemint 893191783Srmacklemnfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, 894191783Srmacklem int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, 895191783Srmacklem struct nfsexstuff *exp) 896191783Srmacklem{ 897191783Srmacklem int error = 0; 898191783Srmacklem 899191783Srmacklem if (ndp->ni_vp) { 900191783Srmacklem vrele(ndp->ni_startdir); 901191783Srmacklem nfsvno_relpathbuf(ndp); 902191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 903191783Srmacklem vrele(ndp->ni_dvp); 904191783Srmacklem else 905191783Srmacklem vput(ndp->ni_dvp); 906191783Srmacklem vrele(ndp->ni_vp); 907191783Srmacklem return (EEXIST); 908191783Srmacklem } 909191783Srmacklem 910191783Srmacklem error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 911191783Srmacklem &nvap->na_vattr, pathcp); 912191783Srmacklem vput(ndp->ni_dvp); 913191783Srmacklem vrele(ndp->ni_startdir); 914191783Srmacklem nfsvno_relpathbuf(ndp); 915191783Srmacklem /* 916191783Srmacklem * Although FreeBSD still had the lookup code in 917191783Srmacklem * it for 7/current, there doesn't seem to be any 918191783Srmacklem * point, since VOP_SYMLINK() returns the ni_vp. 919191783Srmacklem * Just vput it for v2. 920191783Srmacklem */ 921191783Srmacklem if (!not_v2 && !error) 922191783Srmacklem vput(ndp->ni_vp); 923191783Srmacklem return (error); 924191783Srmacklem} 925191783Srmacklem 926191783Srmacklem/* 927191783Srmacklem * Parse symbolic link arguments. 928191783Srmacklem * This function has an ugly side effect. It will MALLOC() an area for 929191783Srmacklem * the symlink and set iov_base to point to it, only if it succeeds. 930191783Srmacklem * So, if it returns with uiop->uio_iov->iov_base != NULL, that must 931191783Srmacklem * be FREE'd later. 932191783Srmacklem */ 933191783Srmacklemint 934191783Srmacklemnfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, 935191783Srmacklem struct thread *p, char **pathcpp, int *lenp) 936191783Srmacklem{ 937191783Srmacklem u_int32_t *tl; 938191783Srmacklem char *pathcp = NULL; 939191783Srmacklem int error = 0, len; 940191783Srmacklem struct nfsv2_sattr *sp; 941191783Srmacklem 942191783Srmacklem *pathcpp = NULL; 943191783Srmacklem *lenp = 0; 944191783Srmacklem if ((nd->nd_flag & ND_NFSV3) && 945191783Srmacklem (error = nfsrv_sattr(nd, nvap, NULL, NULL, p))) 946191783Srmacklem goto nfsmout; 947191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 948191783Srmacklem len = fxdr_unsigned(int, *tl); 949191783Srmacklem if (len > NFS_MAXPATHLEN || len <= 0) { 950191783Srmacklem error = EBADRPC; 951191783Srmacklem goto nfsmout; 952191783Srmacklem } 953191783Srmacklem MALLOC(pathcp, caddr_t, len + 1, M_TEMP, M_WAITOK); 954191783Srmacklem error = nfsrv_mtostr(nd, pathcp, len); 955191783Srmacklem if (error) 956191783Srmacklem goto nfsmout; 957191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 958191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 959191783Srmacklem nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); 960191783Srmacklem } 961191783Srmacklem *pathcpp = pathcp; 962191783Srmacklem *lenp = len; 963191783Srmacklem return (0); 964191783Srmacklemnfsmout: 965191783Srmacklem if (pathcp) 966191783Srmacklem free(pathcp, M_TEMP); 967191783Srmacklem return (error); 968191783Srmacklem} 969191783Srmacklem 970191783Srmacklem/* 971191783Srmacklem * Remove a non-directory object. 972191783Srmacklem */ 973191783Srmacklemint 974191783Srmacklemnfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred, 975191783Srmacklem struct thread *p, struct nfsexstuff *exp) 976191783Srmacklem{ 977191783Srmacklem struct vnode *vp; 978191783Srmacklem int error = 0; 979191783Srmacklem 980191783Srmacklem vp = ndp->ni_vp; 981191783Srmacklem if (vp->v_type == VDIR) 982191783Srmacklem error = NFSERR_ISDIR; 983191783Srmacklem else if (is_v4) 984191783Srmacklem error = nfsrv_checkremove(vp, 1, p); 985191783Srmacklem if (!error) 986191783Srmacklem error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); 987191783Srmacklem if (ndp->ni_dvp == vp) 988191783Srmacklem vrele(ndp->ni_dvp); 989191783Srmacklem else 990191783Srmacklem vput(ndp->ni_dvp); 991191783Srmacklem vput(vp); 992191783Srmacklem return (error); 993191783Srmacklem} 994191783Srmacklem 995191783Srmacklem/* 996191783Srmacklem * Remove a directory. 997191783Srmacklem */ 998191783Srmacklemint 999191783Srmacklemnfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1000191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1001191783Srmacklem{ 1002191783Srmacklem struct vnode *vp; 1003191783Srmacklem int error = 0; 1004191783Srmacklem 1005191783Srmacklem vp = ndp->ni_vp; 1006191783Srmacklem if (vp->v_type != VDIR) { 1007191783Srmacklem error = ENOTDIR; 1008191783Srmacklem goto out; 1009191783Srmacklem } 1010191783Srmacklem /* 1011191783Srmacklem * No rmdir "." please. 1012191783Srmacklem */ 1013191783Srmacklem if (ndp->ni_dvp == vp) { 1014191783Srmacklem error = EINVAL; 1015191783Srmacklem goto out; 1016191783Srmacklem } 1017191783Srmacklem /* 1018191783Srmacklem * The root of a mounted filesystem cannot be deleted. 1019191783Srmacklem */ 1020191783Srmacklem if (vp->v_vflag & VV_ROOT) 1021191783Srmacklem error = EBUSY; 1022191783Srmacklemout: 1023191783Srmacklem if (!error) 1024191783Srmacklem error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); 1025191783Srmacklem if (ndp->ni_dvp == vp) 1026191783Srmacklem vrele(ndp->ni_dvp); 1027191783Srmacklem else 1028191783Srmacklem vput(ndp->ni_dvp); 1029191783Srmacklem vput(vp); 1030191783Srmacklem return (error); 1031191783Srmacklem} 1032191783Srmacklem 1033191783Srmacklem/* 1034191783Srmacklem * Rename vnode op. 1035191783Srmacklem */ 1036191783Srmacklemint 1037191783Srmacklemnfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, 1038191783Srmacklem u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p) 1039191783Srmacklem{ 1040191783Srmacklem struct vnode *fvp, *tvp, *tdvp; 1041191783Srmacklem int error = 0; 1042191783Srmacklem 1043191783Srmacklem fvp = fromndp->ni_vp; 1044191783Srmacklem if (ndstat) { 1045191783Srmacklem vrele(fromndp->ni_dvp); 1046191783Srmacklem vrele(fvp); 1047191783Srmacklem error = ndstat; 1048191783Srmacklem goto out1; 1049191783Srmacklem } 1050191783Srmacklem tdvp = tondp->ni_dvp; 1051191783Srmacklem tvp = tondp->ni_vp; 1052191783Srmacklem if (tvp != NULL) { 1053191783Srmacklem if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1054191783Srmacklem error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST; 1055191783Srmacklem goto out; 1056191783Srmacklem } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1057191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST; 1058191783Srmacklem goto out; 1059191783Srmacklem } 1060191783Srmacklem if (tvp->v_type == VDIR && tvp->v_mountedhere) { 1061191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1062191783Srmacklem goto out; 1063191783Srmacklem } 1064191783Srmacklem 1065191783Srmacklem /* 1066191783Srmacklem * A rename to '.' or '..' results in a prematurely 1067191783Srmacklem * unlocked vnode on FreeBSD5, so I'm just going to fail that 1068191783Srmacklem * here. 1069191783Srmacklem */ 1070191783Srmacklem if ((tondp->ni_cnd.cn_namelen == 1 && 1071191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.') || 1072191783Srmacklem (tondp->ni_cnd.cn_namelen == 2 && 1073191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.' && 1074191783Srmacklem tondp->ni_cnd.cn_nameptr[1] == '.')) { 1075191783Srmacklem error = EINVAL; 1076191783Srmacklem goto out; 1077191783Srmacklem } 1078191783Srmacklem } 1079191783Srmacklem if (fvp->v_type == VDIR && fvp->v_mountedhere) { 1080191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1081191783Srmacklem goto out; 1082191783Srmacklem } 1083191783Srmacklem if (fvp->v_mount != tdvp->v_mount) { 1084191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1085191783Srmacklem goto out; 1086191783Srmacklem } 1087191783Srmacklem if (fvp == tdvp) { 1088191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL; 1089191783Srmacklem goto out; 1090191783Srmacklem } 1091191783Srmacklem if (fvp == tvp) { 1092191783Srmacklem /* 1093191783Srmacklem * If source and destination are the same, there is nothing to 1094191783Srmacklem * do. Set error to -1 to indicate this. 1095191783Srmacklem */ 1096191783Srmacklem error = -1; 1097191783Srmacklem goto out; 1098191783Srmacklem } 1099191783Srmacklem if (ndflag & ND_NFSV4) { 1100216893Srmacklem if (vn_lock(fvp, LK_EXCLUSIVE) == 0) { 1101216893Srmacklem error = nfsrv_checkremove(fvp, 0, p); 1102216893Srmacklem VOP_UNLOCK(fvp, 0); 1103216893Srmacklem } else 1104216893Srmacklem error = EPERM; 1105191783Srmacklem if (tvp && !error) 1106191783Srmacklem error = nfsrv_checkremove(tvp, 1, p); 1107191783Srmacklem } else { 1108191783Srmacklem /* 1109191783Srmacklem * For NFSv2 and NFSv3, try to get rid of the delegation, so 1110191783Srmacklem * that the NFSv4 client won't be confused by the rename. 1111191783Srmacklem * Since nfsd_recalldelegation() can only be called on an 1112191783Srmacklem * unlocked vnode at this point and fvp is the file that will 1113191783Srmacklem * still exist after the rename, just do fvp. 1114191783Srmacklem */ 1115191783Srmacklem nfsd_recalldelegation(fvp, p); 1116191783Srmacklem } 1117191783Srmacklemout: 1118191783Srmacklem if (!error) { 1119191783Srmacklem error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, 1120191783Srmacklem &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, 1121191783Srmacklem &tondp->ni_cnd); 1122191783Srmacklem } else { 1123191783Srmacklem if (tdvp == tvp) 1124191783Srmacklem vrele(tdvp); 1125191783Srmacklem else 1126191783Srmacklem vput(tdvp); 1127191783Srmacklem if (tvp) 1128191783Srmacklem vput(tvp); 1129191783Srmacklem vrele(fromndp->ni_dvp); 1130191783Srmacklem vrele(fvp); 1131191783Srmacklem if (error == -1) 1132191783Srmacklem error = 0; 1133191783Srmacklem } 1134191783Srmacklem vrele(tondp->ni_startdir); 1135191783Srmacklem nfsvno_relpathbuf(tondp); 1136191783Srmacklemout1: 1137191783Srmacklem vrele(fromndp->ni_startdir); 1138191783Srmacklem nfsvno_relpathbuf(fromndp); 1139191783Srmacklem return (error); 1140191783Srmacklem} 1141191783Srmacklem 1142191783Srmacklem/* 1143191783Srmacklem * Link vnode op. 1144191783Srmacklem */ 1145191783Srmacklemint 1146191783Srmacklemnfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred, 1147191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1148191783Srmacklem{ 1149191783Srmacklem struct vnode *xp; 1150191783Srmacklem int error = 0; 1151191783Srmacklem 1152191783Srmacklem xp = ndp->ni_vp; 1153191783Srmacklem if (xp != NULL) { 1154191783Srmacklem error = EEXIST; 1155191783Srmacklem } else { 1156191783Srmacklem xp = ndp->ni_dvp; 1157191783Srmacklem if (vp->v_mount != xp->v_mount) 1158191783Srmacklem error = EXDEV; 1159191783Srmacklem } 1160191783Srmacklem if (!error) { 1161216893Srmacklem vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 1162216893Srmacklem if ((vp->v_iflag & VI_DOOMED) == 0) 1163216893Srmacklem error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); 1164216893Srmacklem else 1165216893Srmacklem error = EPERM; 1166191783Srmacklem if (ndp->ni_dvp == vp) 1167191783Srmacklem vrele(ndp->ni_dvp); 1168191783Srmacklem else 1169191783Srmacklem vput(ndp->ni_dvp); 1170216893Srmacklem VOP_UNLOCK(vp, 0); 1171191783Srmacklem } else { 1172191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1173191783Srmacklem vrele(ndp->ni_dvp); 1174191783Srmacklem else 1175191783Srmacklem vput(ndp->ni_dvp); 1176191783Srmacklem if (ndp->ni_vp) 1177191783Srmacklem vrele(ndp->ni_vp); 1178191783Srmacklem } 1179191783Srmacklem nfsvno_relpathbuf(ndp); 1180191783Srmacklem return (error); 1181191783Srmacklem} 1182191783Srmacklem 1183191783Srmacklem/* 1184191783Srmacklem * Do the fsync() appropriate for the commit. 1185191783Srmacklem */ 1186191783Srmacklemint 1187191783Srmacklemnfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, 1188191783Srmacklem struct thread *td) 1189191783Srmacklem{ 1190191783Srmacklem int error = 0; 1191191783Srmacklem 1192191783Srmacklem if (cnt > MAX_COMMIT_COUNT) { 1193191783Srmacklem /* 1194191783Srmacklem * Give up and do the whole thing 1195191783Srmacklem */ 1196191783Srmacklem if (vp->v_object && 1197191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1198191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1199191783Srmacklem vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC); 1200191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1201191783Srmacklem } 1202191783Srmacklem error = VOP_FSYNC(vp, MNT_WAIT, td); 1203191783Srmacklem } else { 1204191783Srmacklem /* 1205191783Srmacklem * Locate and synchronously write any buffers that fall 1206191783Srmacklem * into the requested range. Note: we are assuming that 1207191783Srmacklem * f_iosize is a power of 2. 1208191783Srmacklem */ 1209191783Srmacklem int iosize = vp->v_mount->mnt_stat.f_iosize; 1210191783Srmacklem int iomask = iosize - 1; 1211191783Srmacklem struct bufobj *bo; 1212191783Srmacklem daddr_t lblkno; 1213191783Srmacklem 1214191783Srmacklem /* 1215191783Srmacklem * Align to iosize boundry, super-align to page boundry. 1216191783Srmacklem */ 1217191783Srmacklem if (off & iomask) { 1218191783Srmacklem cnt += off & iomask; 1219191783Srmacklem off &= ~(u_quad_t)iomask; 1220191783Srmacklem } 1221191783Srmacklem if (off & PAGE_MASK) { 1222191783Srmacklem cnt += off & PAGE_MASK; 1223191783Srmacklem off &= ~(u_quad_t)PAGE_MASK; 1224191783Srmacklem } 1225191783Srmacklem lblkno = off / iosize; 1226191783Srmacklem 1227191783Srmacklem if (vp->v_object && 1228191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1229191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1230218345Salc vm_object_page_clean(vp->v_object, off, off + cnt, 1231218345Salc OBJPC_SYNC); 1232191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1233191783Srmacklem } 1234191783Srmacklem 1235191783Srmacklem bo = &vp->v_bufobj; 1236191783Srmacklem BO_LOCK(bo); 1237191783Srmacklem while (cnt > 0) { 1238191783Srmacklem struct buf *bp; 1239191783Srmacklem 1240191783Srmacklem /* 1241191783Srmacklem * If we have a buffer and it is marked B_DELWRI we 1242191783Srmacklem * have to lock and write it. Otherwise the prior 1243191783Srmacklem * write is assumed to have already been committed. 1244191783Srmacklem * 1245191783Srmacklem * gbincore() can return invalid buffers now so we 1246191783Srmacklem * have to check that bit as well (though B_DELWRI 1247191783Srmacklem * should not be set if B_INVAL is set there could be 1248191783Srmacklem * a race here since we haven't locked the buffer). 1249191783Srmacklem */ 1250191783Srmacklem if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { 1251191783Srmacklem if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | 1252191783Srmacklem LK_INTERLOCK, BO_MTX(bo)) == ENOLCK) { 1253191783Srmacklem BO_LOCK(bo); 1254191783Srmacklem continue; /* retry */ 1255191783Srmacklem } 1256191783Srmacklem if ((bp->b_flags & (B_DELWRI|B_INVAL)) == 1257191783Srmacklem B_DELWRI) { 1258191783Srmacklem bremfree(bp); 1259191783Srmacklem bp->b_flags &= ~B_ASYNC; 1260191783Srmacklem bwrite(bp); 1261191783Srmacklem ++nfs_commit_miss; 1262191783Srmacklem } else 1263191783Srmacklem BUF_UNLOCK(bp); 1264191783Srmacklem BO_LOCK(bo); 1265191783Srmacklem } 1266191783Srmacklem ++nfs_commit_blks; 1267191783Srmacklem if (cnt < iosize) 1268191783Srmacklem break; 1269191783Srmacklem cnt -= iosize; 1270191783Srmacklem ++lblkno; 1271191783Srmacklem } 1272191783Srmacklem BO_UNLOCK(bo); 1273191783Srmacklem } 1274191783Srmacklem return (error); 1275191783Srmacklem} 1276191783Srmacklem 1277191783Srmacklem/* 1278191783Srmacklem * Statfs vnode op. 1279191783Srmacklem */ 1280191783Srmacklemint 1281191990Sattilionfsvno_statfs(struct vnode *vp, struct statfs *sf) 1282191783Srmacklem{ 1283191783Srmacklem 1284191990Sattilio return (VFS_STATFS(vp->v_mount, sf)); 1285191783Srmacklem} 1286191783Srmacklem 1287191783Srmacklem/* 1288191783Srmacklem * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1289191783Srmacklem * must handle nfsrv_opencheck() calls after any other access checks. 1290191783Srmacklem */ 1291191783Srmacklemvoid 1292191783Srmacklemnfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1293191783Srmacklem nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1294199616Srmacklem int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, 1295191783Srmacklem NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p, 1296191783Srmacklem struct nfsexstuff *exp, struct vnode **vpp) 1297191783Srmacklem{ 1298191783Srmacklem struct vnode *vp = NULL; 1299191783Srmacklem u_quad_t tempsize; 1300191783Srmacklem struct nfsexstuff nes; 1301191783Srmacklem 1302191783Srmacklem if (ndp->ni_vp == NULL) 1303191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1304191783Srmacklem stateidp, stp, NULL, nd, p, nd->nd_repstat); 1305191783Srmacklem if (!nd->nd_repstat) { 1306191783Srmacklem if (ndp->ni_vp == NULL) { 1307191783Srmacklem vrele(ndp->ni_startdir); 1308191783Srmacklem nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1309191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1310191783Srmacklem vput(ndp->ni_dvp); 1311191783Srmacklem nfsvno_relpathbuf(ndp); 1312191783Srmacklem if (!nd->nd_repstat) { 1313191783Srmacklem if (*exclusive_flagp) { 1314191783Srmacklem *exclusive_flagp = 0; 1315191783Srmacklem NFSVNO_ATTRINIT(nvap); 1316199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 1317199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 1318191783Srmacklem nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1319191783Srmacklem &nvap->na_vattr, cred); 1320191783Srmacklem } else { 1321191783Srmacklem nfsrv_fixattr(nd, ndp->ni_vp, nvap, 1322191783Srmacklem aclp, p, attrbitp, exp); 1323191783Srmacklem } 1324191783Srmacklem } 1325191783Srmacklem vp = ndp->ni_vp; 1326191783Srmacklem } else { 1327191783Srmacklem if (ndp->ni_startdir) 1328191783Srmacklem vrele(ndp->ni_startdir); 1329191783Srmacklem nfsvno_relpathbuf(ndp); 1330191783Srmacklem vp = ndp->ni_vp; 1331191783Srmacklem if (create == NFSV4OPEN_CREATE) { 1332191783Srmacklem if (ndp->ni_dvp == vp) 1333191783Srmacklem vrele(ndp->ni_dvp); 1334191783Srmacklem else 1335191783Srmacklem vput(ndp->ni_dvp); 1336191783Srmacklem } 1337191783Srmacklem if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 1338191783Srmacklem if (ndp->ni_cnd.cn_flags & RDONLY) 1339191783Srmacklem NFSVNO_SETEXRDONLY(&nes); 1340191783Srmacklem else 1341191783Srmacklem NFSVNO_EXINIT(&nes); 1342191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, 1343200999Srmacklem VWRITE, cred, &nes, p, 1344200999Srmacklem NFSACCCHK_NOOVERRIDE, 1345200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1346191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1347191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1348191783Srmacklem if (!nd->nd_repstat) { 1349191783Srmacklem tempsize = nvap->na_size; 1350191783Srmacklem NFSVNO_ATTRINIT(nvap); 1351191783Srmacklem nvap->na_size = tempsize; 1352191783Srmacklem nd->nd_repstat = VOP_SETATTR(vp, 1353191783Srmacklem &nvap->na_vattr, cred); 1354191783Srmacklem } 1355191783Srmacklem } else if (vp->v_type == VREG) { 1356191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1357191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1358191783Srmacklem } 1359191783Srmacklem } 1360191783Srmacklem } else { 1361191783Srmacklem if (ndp->ni_cnd.cn_flags & HASBUF) 1362191783Srmacklem nfsvno_relpathbuf(ndp); 1363191783Srmacklem if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) { 1364191783Srmacklem vrele(ndp->ni_startdir); 1365191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1366191783Srmacklem vrele(ndp->ni_dvp); 1367191783Srmacklem else 1368191783Srmacklem vput(ndp->ni_dvp); 1369191783Srmacklem if (ndp->ni_vp) 1370191783Srmacklem vput(ndp->ni_vp); 1371191783Srmacklem } 1372191783Srmacklem } 1373191783Srmacklem *vpp = vp; 1374191783Srmacklem} 1375191783Srmacklem 1376191783Srmacklem/* 1377191783Srmacklem * Updates the file rev and sets the mtime and ctime 1378191783Srmacklem * to the current clock time, returning the va_filerev and va_Xtime 1379191783Srmacklem * values. 1380191783Srmacklem */ 1381191783Srmacklemvoid 1382191783Srmacklemnfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 1383191783Srmacklem struct ucred *cred, struct thread *p) 1384191783Srmacklem{ 1385191783Srmacklem struct vattr va; 1386191783Srmacklem 1387191783Srmacklem VATTR_NULL(&va); 1388191783Srmacklem getnanotime(&va.va_mtime); 1389191783Srmacklem (void) VOP_SETATTR(vp, &va, cred); 1390216693Srmacklem (void) nfsvno_getattr(vp, nvap, cred, p, 1); 1391191783Srmacklem} 1392191783Srmacklem 1393191783Srmacklem/* 1394191783Srmacklem * Glue routine to nfsv4_fillattr(). 1395191783Srmacklem */ 1396191783Srmacklemint 1397191783Srmacklemnfsvno_fillattr(struct nfsrv_descript *nd, struct vnode *vp, 1398191783Srmacklem struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 1399191783Srmacklem struct ucred *cred, struct thread *p, int isdgram, int reterr) 1400191783Srmacklem{ 1401191783Srmacklem int error; 1402191783Srmacklem 1403191783Srmacklem error = nfsv4_fillattr(nd, vp, NULL, &nvap->na_vattr, fhp, rderror, 1404191783Srmacklem attrbitp, cred, p, isdgram, reterr); 1405191783Srmacklem return (error); 1406191783Srmacklem} 1407191783Srmacklem 1408191783Srmacklem/* Since the Readdir vnode ops vary, put the entire functions in here. */ 1409191783Srmacklem/* 1410191783Srmacklem * nfs readdir service 1411191783Srmacklem * - mallocs what it thinks is enough to read 1412191783Srmacklem * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 1413206170Srmacklem * - calls VOP_READDIR() 1414191783Srmacklem * - loops around building the reply 1415191783Srmacklem * if the output generated exceeds count break out of loop 1416191783Srmacklem * The NFSM_CLGET macro is used here so that the reply will be packed 1417191783Srmacklem * tightly in mbuf clusters. 1418191783Srmacklem * - it trims out records with d_fileno == 0 1419191783Srmacklem * this doesn't matter for Unix clients, but they might confuse clients 1420191783Srmacklem * for other os'. 1421191783Srmacklem * - it trims out records with d_type == DT_WHT 1422191783Srmacklem * these cannot be seen through NFS (unless we extend the protocol) 1423191783Srmacklem * The alternate call nfsrvd_readdirplus() does lookups as well. 1424191783Srmacklem * PS: The NFS protocol spec. does not clarify what the "count" byte 1425191783Srmacklem * argument is a count of.. just name strings and file id's or the 1426191783Srmacklem * entire reply rpc or ... 1427191783Srmacklem * I tried just file name and id sizes and it confused the Sun client, 1428191783Srmacklem * so I am using the full rpc size now. The "paranoia.." comment refers 1429191783Srmacklem * to including the status longwords that are not a part of the dir. 1430191783Srmacklem * "entry" structures, but are in the rpc. 1431191783Srmacklem */ 1432191783Srmacklemint 1433191783Srmacklemnfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 1434191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1435191783Srmacklem{ 1436191783Srmacklem struct dirent *dp; 1437191783Srmacklem u_int32_t *tl; 1438191783Srmacklem int dirlen; 1439191783Srmacklem char *cpos, *cend, *rbuf; 1440191783Srmacklem struct nfsvattr at; 1441191783Srmacklem int nlen, error = 0, getret = 1; 1442191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies; 1443191783Srmacklem u_int64_t off, toff, verf; 1444191783Srmacklem u_long *cookies = NULL, *cookiep; 1445191783Srmacklem struct uio io; 1446191783Srmacklem struct iovec iv; 1447216691Srmacklem int not_zfs; 1448191783Srmacklem 1449191783Srmacklem if (nd->nd_repstat) { 1450191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1451191783Srmacklem return (0); 1452191783Srmacklem } 1453191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1454191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1455191783Srmacklem off = fxdr_unsigned(u_quad_t, *tl++); 1456191783Srmacklem } else { 1457191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1458191783Srmacklem off = fxdr_hyper(tl); 1459191783Srmacklem tl += 2; 1460191783Srmacklem verf = fxdr_hyper(tl); 1461191783Srmacklem tl += 2; 1462191783Srmacklem } 1463191783Srmacklem toff = off; 1464191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1465206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1466191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1467191783Srmacklem siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1468191783Srmacklem fullsiz = siz; 1469191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1470191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, 1471216693Srmacklem p, 1); 1472191783Srmacklem#if 0 1473191783Srmacklem /* 1474191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1475191783Srmacklem * since it is not supposed to change when entries are 1476191783Srmacklem * removed/added unless that offset cookies returned to 1477191783Srmacklem * the client are no longer valid. 1478191783Srmacklem */ 1479191783Srmacklem if (!nd->nd_repstat && toff && verf != at.na_filerev) 1480191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1481191783Srmacklem#endif 1482191783Srmacklem } 1483206170Srmacklem if (nd->nd_repstat == 0 && cnt == 0) { 1484206170Srmacklem if (nd->nd_flag & ND_NFSV2) 1485206170Srmacklem /* NFSv2 does not have NFSERR_TOOSMALL */ 1486206170Srmacklem nd->nd_repstat = EPERM; 1487206170Srmacklem else 1488206170Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1489206170Srmacklem } 1490191783Srmacklem if (!nd->nd_repstat) 1491200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1492191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1493200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1494191783Srmacklem if (nd->nd_repstat) { 1495191783Srmacklem vput(vp); 1496191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1497191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1498191783Srmacklem return (0); 1499191783Srmacklem } 1500216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1501191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1502191783Srmacklemagain: 1503191783Srmacklem eofflag = 0; 1504191783Srmacklem if (cookies) { 1505191783Srmacklem free((caddr_t)cookies, M_TEMP); 1506191783Srmacklem cookies = NULL; 1507191783Srmacklem } 1508191783Srmacklem 1509191783Srmacklem iv.iov_base = rbuf; 1510191783Srmacklem iv.iov_len = siz; 1511191783Srmacklem io.uio_iov = &iv; 1512191783Srmacklem io.uio_iovcnt = 1; 1513191783Srmacklem io.uio_offset = (off_t)off; 1514191783Srmacklem io.uio_resid = siz; 1515191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1516191783Srmacklem io.uio_rw = UIO_READ; 1517191783Srmacklem io.uio_td = NULL; 1518191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1519191783Srmacklem &cookies); 1520191783Srmacklem off = (u_int64_t)io.uio_offset; 1521191783Srmacklem if (io.uio_resid) 1522191783Srmacklem siz -= io.uio_resid; 1523191783Srmacklem 1524191783Srmacklem if (!cookies && !nd->nd_repstat) 1525191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1526191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1527216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1528191783Srmacklem if (!nd->nd_repstat) 1529191783Srmacklem nd->nd_repstat = getret; 1530191783Srmacklem } 1531191783Srmacklem 1532191783Srmacklem /* 1533191783Srmacklem * Handles the failed cases. nd->nd_repstat == 0 past here. 1534191783Srmacklem */ 1535191783Srmacklem if (nd->nd_repstat) { 1536216692Srmacklem vput(vp); 1537191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1538191783Srmacklem if (cookies) 1539191783Srmacklem free((caddr_t)cookies, M_TEMP); 1540191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1541191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1542191783Srmacklem return (0); 1543191783Srmacklem } 1544191783Srmacklem /* 1545191783Srmacklem * If nothing read, return eof 1546191783Srmacklem * rpc reply 1547191783Srmacklem */ 1548191783Srmacklem if (siz == 0) { 1549216692Srmacklem vput(vp); 1550191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1551191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1552191783Srmacklem } else { 1553191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1554191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1555191783Srmacklem txdr_hyper(at.na_filerev, tl); 1556191783Srmacklem tl += 2; 1557191783Srmacklem } 1558191783Srmacklem *tl++ = newnfs_false; 1559191783Srmacklem *tl = newnfs_true; 1560191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1561191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1562191783Srmacklem return (0); 1563191783Srmacklem } 1564191783Srmacklem 1565191783Srmacklem /* 1566191783Srmacklem * Check for degenerate cases of nothing useful read. 1567191783Srmacklem * If so go try again 1568191783Srmacklem */ 1569191783Srmacklem cpos = rbuf; 1570191783Srmacklem cend = rbuf + siz; 1571191783Srmacklem dp = (struct dirent *)cpos; 1572191783Srmacklem cookiep = cookies; 1573191783Srmacklem 1574191783Srmacklem /* 1575191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1576191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1577191783Srmacklem * skip over the records that precede the requested offset. This 1578191783Srmacklem * requires the assumption that file offset cookies monotonically 1579191783Srmacklem * increase. 1580216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1581216691Srmacklem * this is not done when ZFS is the file system. 1582191783Srmacklem */ 1583191783Srmacklem while (cpos < cend && ncookies > 0 && 1584191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1585216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff))) { 1586191783Srmacklem cpos += dp->d_reclen; 1587191783Srmacklem dp = (struct dirent *)cpos; 1588191783Srmacklem cookiep++; 1589191783Srmacklem ncookies--; 1590191783Srmacklem } 1591191783Srmacklem if (cpos >= cend || ncookies == 0) { 1592191783Srmacklem siz = fullsiz; 1593191783Srmacklem toff = off; 1594191783Srmacklem goto again; 1595191783Srmacklem } 1596216692Srmacklem vput(vp); 1597191783Srmacklem 1598191783Srmacklem /* 1599191783Srmacklem * dirlen is the size of the reply, including all XDR and must 1600191783Srmacklem * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 1601191783Srmacklem * if the XDR should be included in "count", but to be safe, we do. 1602191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now.) 1603191783Srmacklem */ 1604191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1605191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1606191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1607191783Srmacklem txdr_hyper(at.na_filerev, tl); 1608191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1609191783Srmacklem } else { 1610191783Srmacklem dirlen = 2 * NFSX_UNSIGNED; 1611191783Srmacklem } 1612191783Srmacklem 1613191783Srmacklem /* Loop through the records and build reply */ 1614191783Srmacklem while (cpos < cend && ncookies > 0) { 1615191783Srmacklem nlen = dp->d_namlen; 1616191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1617191783Srmacklem nlen <= NFS_MAXNAMLEN) { 1618191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1619191783Srmacklem dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1620191783Srmacklem else 1621191783Srmacklem dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1622191783Srmacklem if (dirlen > cnt) { 1623191783Srmacklem eofflag = 0; 1624191783Srmacklem break; 1625191783Srmacklem } 1626191783Srmacklem 1627191783Srmacklem /* 1628191783Srmacklem * Build the directory record xdr from 1629191783Srmacklem * the dirent entry. 1630191783Srmacklem */ 1631191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1632191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1633191783Srmacklem *tl++ = newnfs_true; 1634191783Srmacklem *tl++ = 0; 1635191783Srmacklem } else { 1636191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1637191783Srmacklem *tl++ = newnfs_true; 1638191783Srmacklem } 1639191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1640191783Srmacklem (void) nfsm_strtom(nd, dp->d_name, nlen); 1641191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1642191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1643191783Srmacklem *tl++ = 0; 1644191783Srmacklem } else 1645191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1646191783Srmacklem *tl = txdr_unsigned(*cookiep); 1647191783Srmacklem } 1648191783Srmacklem cpos += dp->d_reclen; 1649191783Srmacklem dp = (struct dirent *)cpos; 1650191783Srmacklem cookiep++; 1651191783Srmacklem ncookies--; 1652191783Srmacklem } 1653191783Srmacklem if (cpos < cend) 1654191783Srmacklem eofflag = 0; 1655191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1656191783Srmacklem *tl++ = newnfs_false; 1657191783Srmacklem if (eofflag) 1658191783Srmacklem *tl = newnfs_true; 1659191783Srmacklem else 1660191783Srmacklem *tl = newnfs_false; 1661191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1662191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1663191783Srmacklem return (0); 1664191783Srmacklemnfsmout: 1665191783Srmacklem vput(vp); 1666191783Srmacklem return (error); 1667191783Srmacklem} 1668191783Srmacklem 1669191783Srmacklem/* 1670191783Srmacklem * Readdirplus for V3 and Readdir for V4. 1671191783Srmacklem */ 1672191783Srmacklemint 1673191783Srmacklemnfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 1674191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1675191783Srmacklem{ 1676191783Srmacklem struct dirent *dp; 1677191783Srmacklem u_int32_t *tl; 1678191783Srmacklem int dirlen; 1679191783Srmacklem char *cpos, *cend, *rbuf; 1680191783Srmacklem struct vnode *nvp; 1681191783Srmacklem fhandle_t nfh; 1682191783Srmacklem struct nfsvattr nva, at, *nvap = &nva; 1683191783Srmacklem struct mbuf *mb0, *mb1; 1684191783Srmacklem struct nfsreferral *refp; 1685199715Srmacklem int nlen, r, error = 0, getret = 1, usevget = 1; 1686191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 1687191783Srmacklem caddr_t bpos0, bpos1; 1688191783Srmacklem u_int64_t off, toff, verf; 1689191783Srmacklem u_long *cookies = NULL, *cookiep; 1690191783Srmacklem nfsattrbit_t attrbits, rderrbits, savbits; 1691191783Srmacklem struct uio io; 1692191783Srmacklem struct iovec iv; 1693199715Srmacklem struct componentname cn; 1694216691Srmacklem int not_zfs; 1695217176Srmacklem struct mount *mp; 1696191783Srmacklem 1697191783Srmacklem if (nd->nd_repstat) { 1698191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1699191783Srmacklem return (0); 1700191783Srmacklem } 1701191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 1702191783Srmacklem off = fxdr_hyper(tl); 1703191783Srmacklem toff = off; 1704191783Srmacklem tl += 2; 1705191783Srmacklem verf = fxdr_hyper(tl); 1706191783Srmacklem tl += 2; 1707191783Srmacklem siz = fxdr_unsigned(int, *tl++); 1708191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1709191783Srmacklem 1710191783Srmacklem /* 1711191783Srmacklem * Use the server's maximum data transfer size as the upper bound 1712191783Srmacklem * on reply datalen. 1713191783Srmacklem */ 1714206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1715191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1716191783Srmacklem 1717191783Srmacklem /* 1718191783Srmacklem * siz is a "hint" of how much directory information (name, fileid, 1719191783Srmacklem * cookie) should be in the reply. At least one client "hints" 0, 1720191783Srmacklem * so I set it to cnt for that case. I also round it up to the 1721191783Srmacklem * next multiple of DIRBLKSIZ. 1722191783Srmacklem */ 1723206170Srmacklem if (siz <= 0) 1724191783Srmacklem siz = cnt; 1725191783Srmacklem siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1726191783Srmacklem 1727191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1728191783Srmacklem error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1729191783Srmacklem if (error) 1730191783Srmacklem goto nfsmout; 1731191783Srmacklem NFSSET_ATTRBIT(&savbits, &attrbits); 1732191783Srmacklem NFSCLRNOTFILLABLE_ATTRBIT(&attrbits); 1733191783Srmacklem NFSZERO_ATTRBIT(&rderrbits); 1734191783Srmacklem NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 1735191783Srmacklem } else { 1736191783Srmacklem NFSZERO_ATTRBIT(&attrbits); 1737191783Srmacklem } 1738191783Srmacklem fullsiz = siz; 1739216693Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1740191783Srmacklem if (!nd->nd_repstat) { 1741191783Srmacklem if (off && verf != at.na_filerev) { 1742191783Srmacklem /* 1743191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1744191783Srmacklem * since it is not supposed to change when entries are 1745191783Srmacklem * removed/added unless that offset cookies returned to 1746191783Srmacklem * the client are no longer valid. 1747191783Srmacklem */ 1748191783Srmacklem#if 0 1749191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1750191783Srmacklem nd->nd_repstat = NFSERR_NOTSAME; 1751191783Srmacklem } else { 1752191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1753191783Srmacklem } 1754191783Srmacklem#endif 1755191783Srmacklem } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) { 1756191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1757191783Srmacklem } 1758191783Srmacklem } 1759191783Srmacklem if (!nd->nd_repstat && vp->v_type != VDIR) 1760191783Srmacklem nd->nd_repstat = NFSERR_NOTDIR; 1761191783Srmacklem if (!nd->nd_repstat && cnt == 0) 1762191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1763191783Srmacklem if (!nd->nd_repstat) 1764200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1765191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1766200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1767191783Srmacklem if (nd->nd_repstat) { 1768191783Srmacklem vput(vp); 1769191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1770191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1771191783Srmacklem return (0); 1772191783Srmacklem } 1773216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1774191783Srmacklem 1775191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1776191783Srmacklemagain: 1777191783Srmacklem eofflag = 0; 1778191783Srmacklem if (cookies) { 1779191783Srmacklem free((caddr_t)cookies, M_TEMP); 1780191783Srmacklem cookies = NULL; 1781191783Srmacklem } 1782191783Srmacklem 1783191783Srmacklem iv.iov_base = rbuf; 1784191783Srmacklem iv.iov_len = siz; 1785191783Srmacklem io.uio_iov = &iv; 1786191783Srmacklem io.uio_iovcnt = 1; 1787191783Srmacklem io.uio_offset = (off_t)off; 1788191783Srmacklem io.uio_resid = siz; 1789191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1790191783Srmacklem io.uio_rw = UIO_READ; 1791191783Srmacklem io.uio_td = NULL; 1792191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1793191783Srmacklem &cookies); 1794191783Srmacklem off = (u_int64_t)io.uio_offset; 1795191783Srmacklem if (io.uio_resid) 1796191783Srmacklem siz -= io.uio_resid; 1797191783Srmacklem 1798216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1799191783Srmacklem 1800191783Srmacklem if (!cookies && !nd->nd_repstat) 1801191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1802191783Srmacklem if (!nd->nd_repstat) 1803191783Srmacklem nd->nd_repstat = getret; 1804191783Srmacklem if (nd->nd_repstat) { 1805199715Srmacklem vput(vp); 1806191783Srmacklem if (cookies) 1807191783Srmacklem free((caddr_t)cookies, M_TEMP); 1808191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1809191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1810191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1811191783Srmacklem return (0); 1812191783Srmacklem } 1813191783Srmacklem /* 1814191783Srmacklem * If nothing read, return eof 1815191783Srmacklem * rpc reply 1816191783Srmacklem */ 1817191783Srmacklem if (siz == 0) { 1818199715Srmacklem vput(vp); 1819191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1820191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1821191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1822191783Srmacklem txdr_hyper(at.na_filerev, tl); 1823191783Srmacklem tl += 2; 1824191783Srmacklem *tl++ = newnfs_false; 1825191783Srmacklem *tl = newnfs_true; 1826191783Srmacklem free((caddr_t)cookies, M_TEMP); 1827191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1828191783Srmacklem return (0); 1829191783Srmacklem } 1830191783Srmacklem 1831191783Srmacklem /* 1832191783Srmacklem * Check for degenerate cases of nothing useful read. 1833191783Srmacklem * If so go try again 1834191783Srmacklem */ 1835191783Srmacklem cpos = rbuf; 1836191783Srmacklem cend = rbuf + siz; 1837191783Srmacklem dp = (struct dirent *)cpos; 1838191783Srmacklem cookiep = cookies; 1839191783Srmacklem 1840191783Srmacklem /* 1841191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1842191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1843191783Srmacklem * skip over the records that precede the requested offset. This 1844191783Srmacklem * requires the assumption that file offset cookies monotonically 1845191783Srmacklem * increase. 1846216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1847216691Srmacklem * this is not done when ZFS is the file system. 1848191783Srmacklem */ 1849191783Srmacklem while (cpos < cend && ncookies > 0 && 1850191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1851216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff) || 1852191783Srmacklem ((nd->nd_flag & ND_NFSV4) && 1853191783Srmacklem ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 1854191783Srmacklem (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 1855191783Srmacklem cpos += dp->d_reclen; 1856191783Srmacklem dp = (struct dirent *)cpos; 1857191783Srmacklem cookiep++; 1858191783Srmacklem ncookies--; 1859191783Srmacklem } 1860191783Srmacklem if (cpos >= cend || ncookies == 0) { 1861191783Srmacklem siz = fullsiz; 1862191783Srmacklem toff = off; 1863191783Srmacklem goto again; 1864191783Srmacklem } 1865217176Srmacklem 1866217176Srmacklem /* 1867217176Srmacklem * Busy the file system so that the mount point won't go away 1868217176Srmacklem * and, as such, VFS_VGET() can be used safely. 1869217176Srmacklem */ 1870217176Srmacklem mp = vp->v_mount; 1871217176Srmacklem vfs_ref(mp); 1872216692Srmacklem VOP_UNLOCK(vp, 0); 1873217176Srmacklem nd->nd_repstat = vfs_busy(mp, 0); 1874217176Srmacklem vfs_rel(mp); 1875217176Srmacklem if (nd->nd_repstat != 0) { 1876217176Srmacklem vrele(vp); 1877217176Srmacklem free(cookies, M_TEMP); 1878217176Srmacklem free(rbuf, M_TEMP); 1879217176Srmacklem if (nd->nd_flag & ND_NFSV3) 1880217176Srmacklem nfsrv_postopattr(nd, getret, &at); 1881217176Srmacklem return (0); 1882217176Srmacklem } 1883191783Srmacklem 1884191783Srmacklem /* 1885191783Srmacklem * Save this position, in case there is an error before one entry 1886191783Srmacklem * is created. 1887191783Srmacklem */ 1888191783Srmacklem mb0 = nd->nd_mb; 1889191783Srmacklem bpos0 = nd->nd_bpos; 1890191783Srmacklem 1891191783Srmacklem /* 1892191783Srmacklem * Fill in the first part of the reply. 1893191783Srmacklem * dirlen is the reply length in bytes and cannot exceed cnt. 1894191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now, 1895191783Srmacklem * so we recognize when we have exceeded cnt.) 1896191783Srmacklem */ 1897191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1898191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1899191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1900191783Srmacklem } else { 1901191783Srmacklem dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 1902191783Srmacklem } 1903191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1904191783Srmacklem txdr_hyper(at.na_filerev, tl); 1905191783Srmacklem 1906191783Srmacklem /* 1907191783Srmacklem * Save this position, in case there is an empty reply needed. 1908191783Srmacklem */ 1909191783Srmacklem mb1 = nd->nd_mb; 1910191783Srmacklem bpos1 = nd->nd_bpos; 1911191783Srmacklem 1912191783Srmacklem /* Loop through the records and build reply */ 1913191783Srmacklem entrycnt = 0; 1914191783Srmacklem while (cpos < cend && ncookies > 0 && dirlen < cnt) { 1915191783Srmacklem nlen = dp->d_namlen; 1916191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1917191783Srmacklem nlen <= NFS_MAXNAMLEN && 1918191783Srmacklem ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 1919191783Srmacklem (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 1920191783Srmacklem || (nlen == 1 && dp->d_name[0] != '.'))) { 1921191783Srmacklem /* 1922191783Srmacklem * Save the current position in the reply, in case 1923191783Srmacklem * this entry exceeds cnt. 1924191783Srmacklem */ 1925191783Srmacklem mb1 = nd->nd_mb; 1926191783Srmacklem bpos1 = nd->nd_bpos; 1927191783Srmacklem 1928191783Srmacklem /* 1929191783Srmacklem * For readdir_and_lookup get the vnode using 1930191783Srmacklem * the file number. 1931191783Srmacklem */ 1932191783Srmacklem nvp = NULL; 1933191783Srmacklem refp = NULL; 1934191783Srmacklem r = 0; 1935191783Srmacklem if ((nd->nd_flag & ND_NFSV3) || 1936191783Srmacklem NFSNONZERO_ATTRBIT(&savbits)) { 1937191783Srmacklem if (nd->nd_flag & ND_NFSV4) 1938191783Srmacklem refp = nfsv4root_getreferral(NULL, 1939191783Srmacklem vp, dp->d_fileno); 1940199715Srmacklem if (refp == NULL) { 1941199715Srmacklem if (usevget) 1942217176Srmacklem r = VFS_VGET(mp, dp->d_fileno, 1943217176Srmacklem LK_SHARED, &nvp); 1944199715Srmacklem else 1945199715Srmacklem r = EOPNOTSUPP; 1946199715Srmacklem if (r == EOPNOTSUPP) { 1947199715Srmacklem if (usevget) { 1948199715Srmacklem usevget = 0; 1949199715Srmacklem cn.cn_nameiop = LOOKUP; 1950199715Srmacklem cn.cn_lkflags = 1951216700Srmacklem LK_SHARED | 1952199715Srmacklem LK_RETRY; 1953199715Srmacklem cn.cn_cred = 1954199715Srmacklem nd->nd_cred; 1955199715Srmacklem cn.cn_thread = p; 1956199715Srmacklem } 1957199715Srmacklem cn.cn_nameptr = dp->d_name; 1958199715Srmacklem cn.cn_namelen = nlen; 1959199715Srmacklem cn.cn_flags = ISLASTCN | 1960199715Srmacklem NOFOLLOW | LOCKLEAF | 1961199715Srmacklem MPSAFE; 1962199715Srmacklem if (nlen == 2 && 1963199715Srmacklem dp->d_name[0] == '.' && 1964199715Srmacklem dp->d_name[1] == '.') 1965199715Srmacklem cn.cn_flags |= 1966199715Srmacklem ISDOTDOT; 1967216700Srmacklem if (vn_lock(vp, LK_SHARED) 1968216692Srmacklem != 0) { 1969216692Srmacklem nd->nd_repstat = EPERM; 1970216692Srmacklem break; 1971216692Srmacklem } 1972214149Srmacklem if ((vp->v_vflag & VV_ROOT) != 0 1973214149Srmacklem && (cn.cn_flags & ISDOTDOT) 1974214149Srmacklem != 0) { 1975214149Srmacklem vref(vp); 1976214149Srmacklem nvp = vp; 1977214149Srmacklem r = 0; 1978220507Srmacklem } else { 1979214149Srmacklem r = VOP_LOOKUP(vp, &nvp, 1980214149Srmacklem &cn); 1981220507Srmacklem if (vp != nvp) 1982220507Srmacklem VOP_UNLOCK(vp, 1983220507Srmacklem 0); 1984220507Srmacklem } 1985199715Srmacklem } 1986199715Srmacklem } 1987191783Srmacklem if (!r) { 1988191783Srmacklem if (refp == NULL && 1989191783Srmacklem ((nd->nd_flag & ND_NFSV3) || 1990191783Srmacklem NFSNONZERO_ATTRBIT(&attrbits))) { 1991191783Srmacklem r = nfsvno_getfh(nvp, &nfh, p); 1992191783Srmacklem if (!r) 1993191783Srmacklem r = nfsvno_getattr(nvp, nvap, 1994216693Srmacklem nd->nd_cred, p, 1); 1995191783Srmacklem } 1996191783Srmacklem } else { 1997191783Srmacklem nvp = NULL; 1998191783Srmacklem } 1999191783Srmacklem if (r) { 2000191783Srmacklem if (!NFSISSET_ATTRBIT(&attrbits, 2001191783Srmacklem NFSATTRBIT_RDATTRERROR)) { 2002191783Srmacklem if (nvp != NULL) 2003191783Srmacklem vput(nvp); 2004191783Srmacklem nd->nd_repstat = r; 2005191783Srmacklem break; 2006191783Srmacklem } 2007191783Srmacklem } 2008191783Srmacklem } 2009191783Srmacklem 2010191783Srmacklem /* 2011191783Srmacklem * Build the directory record xdr 2012191783Srmacklem */ 2013191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 2014191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2015191783Srmacklem *tl++ = newnfs_true; 2016191783Srmacklem *tl++ = 0; 2017191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 2018191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2019191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2020191783Srmacklem *tl++ = 0; 2021191783Srmacklem *tl = txdr_unsigned(*cookiep); 2022191783Srmacklem nfsrv_postopattr(nd, 0, nvap); 2023191783Srmacklem dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1); 2024191783Srmacklem dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 2025191783Srmacklem if (nvp != NULL) 2026191783Srmacklem vput(nvp); 2027191783Srmacklem } else { 2028191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2029191783Srmacklem *tl++ = newnfs_true; 2030191783Srmacklem *tl++ = 0; 2031191783Srmacklem *tl = txdr_unsigned(*cookiep); 2032191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2033191783Srmacklem if (nvp != NULL) 2034216692Srmacklem VOP_UNLOCK(nvp, 0); 2035191783Srmacklem if (refp != NULL) { 2036191783Srmacklem dirlen += nfsrv_putreferralattr(nd, 2037191783Srmacklem &savbits, refp, 0, 2038191783Srmacklem &nd->nd_repstat); 2039191783Srmacklem if (nd->nd_repstat) { 2040191783Srmacklem if (nvp != NULL) 2041191783Srmacklem vrele(nvp); 2042191783Srmacklem break; 2043191783Srmacklem } 2044191783Srmacklem } else if (r) { 2045191783Srmacklem dirlen += nfsvno_fillattr(nd, nvp, nvap, 2046191783Srmacklem &nfh, r, &rderrbits, nd->nd_cred, 2047191783Srmacklem p, isdgram, 0); 2048191783Srmacklem } else { 2049191783Srmacklem dirlen += nfsvno_fillattr(nd, nvp, nvap, 2050191783Srmacklem &nfh, r, &attrbits, nd->nd_cred, 2051191783Srmacklem p, isdgram, 0); 2052191783Srmacklem } 2053191783Srmacklem if (nvp != NULL) 2054191783Srmacklem vrele(nvp); 2055191783Srmacklem dirlen += (3 * NFSX_UNSIGNED); 2056191783Srmacklem } 2057191783Srmacklem if (dirlen <= cnt) 2058191783Srmacklem entrycnt++; 2059191783Srmacklem } 2060191783Srmacklem cpos += dp->d_reclen; 2061191783Srmacklem dp = (struct dirent *)cpos; 2062191783Srmacklem cookiep++; 2063191783Srmacklem ncookies--; 2064191783Srmacklem } 2065216692Srmacklem vrele(vp); 2066217176Srmacklem vfs_unbusy(mp); 2067191783Srmacklem 2068191783Srmacklem /* 2069191783Srmacklem * If dirlen > cnt, we must strip off the last entry. If that 2070191783Srmacklem * results in an empty reply, report NFSERR_TOOSMALL. 2071191783Srmacklem */ 2072191783Srmacklem if (dirlen > cnt || nd->nd_repstat) { 2073191783Srmacklem if (!nd->nd_repstat && entrycnt == 0) 2074191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 2075191783Srmacklem if (nd->nd_repstat) 2076191783Srmacklem newnfs_trimtrailing(nd, mb0, bpos0); 2077191783Srmacklem else 2078191783Srmacklem newnfs_trimtrailing(nd, mb1, bpos1); 2079191783Srmacklem eofflag = 0; 2080191783Srmacklem } else if (cpos < cend) 2081191783Srmacklem eofflag = 0; 2082191783Srmacklem if (!nd->nd_repstat) { 2083191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2084191783Srmacklem *tl++ = newnfs_false; 2085191783Srmacklem if (eofflag) 2086191783Srmacklem *tl = newnfs_true; 2087191783Srmacklem else 2088191783Srmacklem *tl = newnfs_false; 2089191783Srmacklem } 2090191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 2091191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 2092191783Srmacklem return (0); 2093191783Srmacklemnfsmout: 2094191783Srmacklem vput(vp); 2095191783Srmacklem return (error); 2096191783Srmacklem} 2097191783Srmacklem 2098191783Srmacklem/* 2099191783Srmacklem * Get the settable attributes out of the mbuf list. 2100191783Srmacklem * (Return 0 or EBADRPC) 2101191783Srmacklem */ 2102191783Srmacklemint 2103191783Srmacklemnfsrv_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2104191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2105191783Srmacklem{ 2106191783Srmacklem u_int32_t *tl; 2107191783Srmacklem struct nfsv2_sattr *sp; 2108191783Srmacklem struct timeval curtime; 2109191783Srmacklem int error = 0, toclient = 0; 2110191783Srmacklem 2111191783Srmacklem switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 2112191783Srmacklem case ND_NFSV2: 2113191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2114191783Srmacklem /* 2115191783Srmacklem * Some old clients didn't fill in the high order 16bits. 2116191783Srmacklem * --> check the low order 2 bytes for 0xffff 2117191783Srmacklem */ 2118191783Srmacklem if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 2119191783Srmacklem nvap->na_mode = nfstov_mode(sp->sa_mode); 2120191783Srmacklem if (sp->sa_uid != newnfs_xdrneg1) 2121191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 2122191783Srmacklem if (sp->sa_gid != newnfs_xdrneg1) 2123191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 2124191783Srmacklem if (sp->sa_size != newnfs_xdrneg1) 2125191783Srmacklem nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 2126191783Srmacklem if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 2127191783Srmacklem#ifdef notyet 2128191783Srmacklem fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 2129191783Srmacklem#else 2130191783Srmacklem nvap->na_atime.tv_sec = 2131191783Srmacklem fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 2132191783Srmacklem nvap->na_atime.tv_nsec = 0; 2133191783Srmacklem#endif 2134191783Srmacklem } 2135191783Srmacklem if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 2136191783Srmacklem fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 2137191783Srmacklem break; 2138191783Srmacklem case ND_NFSV3: 2139191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2140191783Srmacklem if (*tl == newnfs_true) { 2141191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2142191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2143191783Srmacklem } 2144191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2145191783Srmacklem if (*tl == newnfs_true) { 2146191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2147191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, *tl); 2148191783Srmacklem } 2149191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2150191783Srmacklem if (*tl == newnfs_true) { 2151191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2152191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, *tl); 2153191783Srmacklem } 2154191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2155191783Srmacklem if (*tl == newnfs_true) { 2156191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2157191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2158191783Srmacklem } 2159191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2160191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2161191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2162191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2163191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_atime); 2164191783Srmacklem toclient = 1; 2165191783Srmacklem break; 2166191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2167191783Srmacklem NFSGETTIME(&curtime); 2168191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2169191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2170191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2171191783Srmacklem break; 2172191783Srmacklem }; 2173191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2174191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2175191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2176191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2177191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_mtime); 2178191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2179191783Srmacklem break; 2180191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2181191783Srmacklem NFSGETTIME(&curtime); 2182191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2183191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2184191783Srmacklem if (!toclient) 2185191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2186191783Srmacklem break; 2187191783Srmacklem }; 2188191783Srmacklem break; 2189191783Srmacklem case ND_NFSV4: 2190191783Srmacklem error = nfsv4_sattr(nd, nvap, attrbitp, aclp, p); 2191191783Srmacklem }; 2192191783Srmacklemnfsmout: 2193191783Srmacklem return (error); 2194191783Srmacklem} 2195191783Srmacklem 2196191783Srmacklem/* 2197191783Srmacklem * Handle the setable attributes for V4. 2198191783Srmacklem * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 2199191783Srmacklem */ 2200191783Srmacklemint 2201191783Srmacklemnfsv4_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2202191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2203191783Srmacklem{ 2204191783Srmacklem u_int32_t *tl; 2205191783Srmacklem int attrsum = 0; 2206191783Srmacklem int i, j; 2207191783Srmacklem int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 2208191783Srmacklem int toclient = 0; 2209191783Srmacklem u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 2210191783Srmacklem uid_t uid; 2211191783Srmacklem gid_t gid; 2212191783Srmacklem struct timeval curtime; 2213191783Srmacklem 2214191783Srmacklem error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 2215191783Srmacklem if (error) 2216191783Srmacklem return (error); 2217191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2218191783Srmacklem attrsize = fxdr_unsigned(int, *tl); 2219191783Srmacklem 2220191783Srmacklem /* 2221191783Srmacklem * Loop around getting the setable attributes. If an unsupported 2222191783Srmacklem * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 2223191783Srmacklem */ 2224191783Srmacklem if (retnotsup) { 2225191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2226191783Srmacklem bitpos = NFSATTRBIT_MAX; 2227191783Srmacklem } else { 2228191783Srmacklem bitpos = 0; 2229191783Srmacklem } 2230191783Srmacklem for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 2231191783Srmacklem if (attrsum > attrsize) { 2232191783Srmacklem error = NFSERR_BADXDR; 2233191783Srmacklem goto nfsmout; 2234191783Srmacklem } 2235191783Srmacklem if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 2236191783Srmacklem switch (bitpos) { 2237191783Srmacklem case NFSATTRBIT_SIZE: 2238191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2239191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2240191783Srmacklem attrsum += NFSX_HYPER; 2241191783Srmacklem break; 2242191783Srmacklem case NFSATTRBIT_ACL: 2243191783Srmacklem error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize, 2244191783Srmacklem p); 2245191783Srmacklem if (error) 2246191783Srmacklem goto nfsmout; 2247191783Srmacklem if (aceerr && !nd->nd_repstat) 2248191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2249191783Srmacklem attrsum += aclsize; 2250191783Srmacklem break; 2251191783Srmacklem case NFSATTRBIT_ARCHIVE: 2252191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2253191783Srmacklem if (!nd->nd_repstat) 2254191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2255191783Srmacklem attrsum += NFSX_UNSIGNED; 2256191783Srmacklem break; 2257191783Srmacklem case NFSATTRBIT_HIDDEN: 2258191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2259191783Srmacklem if (!nd->nd_repstat) 2260191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2261191783Srmacklem attrsum += NFSX_UNSIGNED; 2262191783Srmacklem break; 2263191783Srmacklem case NFSATTRBIT_MIMETYPE: 2264191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2265191783Srmacklem i = fxdr_unsigned(int, *tl); 2266191783Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 2267191783Srmacklem if (error) 2268191783Srmacklem goto nfsmout; 2269191783Srmacklem if (!nd->nd_repstat) 2270191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2271191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 2272191783Srmacklem break; 2273191783Srmacklem case NFSATTRBIT_MODE: 2274191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2275191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2276191783Srmacklem attrsum += NFSX_UNSIGNED; 2277191783Srmacklem break; 2278191783Srmacklem case NFSATTRBIT_OWNER: 2279191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2280191783Srmacklem j = fxdr_unsigned(int, *tl); 2281191783Srmacklem if (j < 0) 2282191783Srmacklem return (NFSERR_BADXDR); 2283191783Srmacklem if (j > NFSV4_SMALLSTR) 2284191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2285191783Srmacklem else 2286191783Srmacklem cp = namestr; 2287191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2288191783Srmacklem if (error) { 2289191783Srmacklem if (j > NFSV4_SMALLSTR) 2290191783Srmacklem free(cp, M_NFSSTRING); 2291191783Srmacklem return (error); 2292191783Srmacklem } 2293191783Srmacklem if (!nd->nd_repstat) { 2294191783Srmacklem nd->nd_repstat = nfsv4_strtouid(cp,j,&uid,p); 2295191783Srmacklem if (!nd->nd_repstat) 2296191783Srmacklem nvap->na_uid = uid; 2297191783Srmacklem } 2298191783Srmacklem if (j > NFSV4_SMALLSTR) 2299191783Srmacklem free(cp, M_NFSSTRING); 2300191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2301191783Srmacklem break; 2302191783Srmacklem case NFSATTRBIT_OWNERGROUP: 2303191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2304191783Srmacklem j = fxdr_unsigned(int, *tl); 2305191783Srmacklem if (j < 0) 2306191783Srmacklem return (NFSERR_BADXDR); 2307191783Srmacklem if (j > NFSV4_SMALLSTR) 2308191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2309191783Srmacklem else 2310191783Srmacklem cp = namestr; 2311191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2312191783Srmacklem if (error) { 2313191783Srmacklem if (j > NFSV4_SMALLSTR) 2314191783Srmacklem free(cp, M_NFSSTRING); 2315191783Srmacklem return (error); 2316191783Srmacklem } 2317191783Srmacklem if (!nd->nd_repstat) { 2318191783Srmacklem nd->nd_repstat = nfsv4_strtogid(cp,j,&gid,p); 2319191783Srmacklem if (!nd->nd_repstat) 2320191783Srmacklem nvap->na_gid = gid; 2321191783Srmacklem } 2322191783Srmacklem if (j > NFSV4_SMALLSTR) 2323191783Srmacklem free(cp, M_NFSSTRING); 2324191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2325191783Srmacklem break; 2326191783Srmacklem case NFSATTRBIT_SYSTEM: 2327191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2328191783Srmacklem if (!nd->nd_repstat) 2329191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2330191783Srmacklem attrsum += NFSX_UNSIGNED; 2331191783Srmacklem break; 2332191783Srmacklem case NFSATTRBIT_TIMEACCESSSET: 2333191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2334191783Srmacklem attrsum += NFSX_UNSIGNED; 2335191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2336191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2337191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_atime); 2338191783Srmacklem toclient = 1; 2339191783Srmacklem attrsum += NFSX_V4TIME; 2340191783Srmacklem } else { 2341191783Srmacklem NFSGETTIME(&curtime); 2342191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2343191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2344191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2345191783Srmacklem } 2346191783Srmacklem break; 2347191783Srmacklem case NFSATTRBIT_TIMEBACKUP: 2348191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2349191783Srmacklem if (!nd->nd_repstat) 2350191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2351191783Srmacklem attrsum += NFSX_V4TIME; 2352191783Srmacklem break; 2353191783Srmacklem case NFSATTRBIT_TIMECREATE: 2354191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2355191783Srmacklem if (!nd->nd_repstat) 2356191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2357191783Srmacklem attrsum += NFSX_V4TIME; 2358191783Srmacklem break; 2359191783Srmacklem case NFSATTRBIT_TIMEMODIFYSET: 2360191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2361191783Srmacklem attrsum += NFSX_UNSIGNED; 2362191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2363191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2364191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_mtime); 2365191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2366191783Srmacklem attrsum += NFSX_V4TIME; 2367191783Srmacklem } else { 2368191783Srmacklem NFSGETTIME(&curtime); 2369191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2370191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2371191783Srmacklem if (!toclient) 2372191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2373191783Srmacklem } 2374191783Srmacklem break; 2375191783Srmacklem default: 2376191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2377191783Srmacklem /* 2378191783Srmacklem * set bitpos so we drop out of the loop. 2379191783Srmacklem */ 2380191783Srmacklem bitpos = NFSATTRBIT_MAX; 2381191783Srmacklem break; 2382191783Srmacklem }; 2383191783Srmacklem } 2384191783Srmacklem 2385191783Srmacklem /* 2386191783Srmacklem * some clients pad the attrlist, so we need to skip over the 2387191783Srmacklem * padding. 2388191783Srmacklem */ 2389191783Srmacklem if (attrsum > attrsize) { 2390191783Srmacklem error = NFSERR_BADXDR; 2391191783Srmacklem } else { 2392191783Srmacklem attrsize = NFSM_RNDUP(attrsize); 2393191783Srmacklem if (attrsum < attrsize) 2394191783Srmacklem error = nfsm_advance(nd, attrsize - attrsum, -1); 2395191783Srmacklem } 2396191783Srmacklemnfsmout: 2397191783Srmacklem return (error); 2398191783Srmacklem} 2399191783Srmacklem 2400191783Srmacklem/* 2401191783Srmacklem * Check/setup export credentials. 2402191783Srmacklem */ 2403191783Srmacklemint 2404191783Srmacklemnfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 2405191783Srmacklem struct ucred *credanon) 2406191783Srmacklem{ 2407191783Srmacklem int error = 0; 2408191783Srmacklem 2409191783Srmacklem /* 2410191783Srmacklem * Check/setup credentials. 2411191783Srmacklem */ 2412191783Srmacklem if (nd->nd_flag & ND_GSS) 2413192121Srmacklem exp->nes_exflag &= ~MNT_EXPORTANON; 2414191783Srmacklem 2415191783Srmacklem /* 2416192121Srmacklem * Check to see if the operation is allowed for this security flavor. 2417191783Srmacklem * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to 2418191783Srmacklem * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 2419192121Srmacklem * Also, allow Secinfo, so that it can acquire the correct flavor(s). 2420191783Srmacklem */ 2421192121Srmacklem if (nfsvno_testexp(nd, exp) && 2422192121Srmacklem nd->nd_procnum != NFSV4OP_SECINFO && 2423191783Srmacklem nd->nd_procnum != NFSPROC_FSINFO) { 2424191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2425191783Srmacklem error = NFSERR_WRONGSEC; 2426191783Srmacklem else 2427191783Srmacklem error = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2428191783Srmacklem return (error); 2429191783Srmacklem } 2430191783Srmacklem 2431191783Srmacklem /* 2432191783Srmacklem * Check to see if the file system is exported V4 only. 2433191783Srmacklem */ 2434191783Srmacklem if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) 2435191783Srmacklem return (NFSERR_PROGNOTV4); 2436191783Srmacklem 2437191783Srmacklem /* 2438191783Srmacklem * Now, map the user credentials. 2439191783Srmacklem * (Note that ND_AUTHNONE will only be set for an NFSv3 2440191783Srmacklem * Fsinfo RPC. If set for anything else, this code might need 2441191783Srmacklem * to change.) 2442191783Srmacklem */ 2443191783Srmacklem if (NFSVNO_EXPORTED(exp) && 2444191783Srmacklem ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) || 2445191783Srmacklem NFSVNO_EXPORTANON(exp) || 2446191783Srmacklem (nd->nd_flag & ND_AUTHNONE))) { 2447191783Srmacklem nd->nd_cred->cr_uid = credanon->cr_uid; 2448191783Srmacklem nd->nd_cred->cr_gid = credanon->cr_gid; 2449194498Sbrooks crsetgroups(nd->nd_cred, credanon->cr_ngroups, 2450194498Sbrooks credanon->cr_groups); 2451191783Srmacklem } 2452191783Srmacklem return (0); 2453191783Srmacklem} 2454191783Srmacklem 2455191783Srmacklem/* 2456191783Srmacklem * Check exports. 2457191783Srmacklem */ 2458191783Srmacklemint 2459191783Srmacklemnfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 2460191783Srmacklem struct ucred **credp) 2461191783Srmacklem{ 2462192121Srmacklem int i, error, *secflavors; 2463191783Srmacklem 2464191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2465192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2466192121Srmacklem if (error) { 2467192121Srmacklem if (nfs_rootfhset) { 2468192121Srmacklem exp->nes_exflag = 0; 2469192121Srmacklem exp->nes_numsecflavor = 0; 2470192121Srmacklem error = 0; 2471192121Srmacklem } 2472192121Srmacklem } else { 2473192121Srmacklem /* Copy the security flavors. */ 2474192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2475192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2476191783Srmacklem } 2477191783Srmacklem return (error); 2478191783Srmacklem} 2479191783Srmacklem 2480191783Srmacklem/* 2481191783Srmacklem * Get a vnode for a file handle and export stuff. 2482191783Srmacklem */ 2483191783Srmacklemint 2484191783Srmacklemnfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 2485216700Srmacklem int lktype, struct vnode **vpp, struct nfsexstuff *exp, 2486216700Srmacklem struct ucred **credp) 2487191783Srmacklem{ 2488192121Srmacklem int i, error, *secflavors; 2489191783Srmacklem 2490191998Srmacklem *credp = NULL; 2491192121Srmacklem exp->nes_numsecflavor = 0; 2492217063Srmacklem if (VFS_NEEDSGIANT(mp)) 2493217063Srmacklem error = ESTALE; 2494217063Srmacklem else 2495217063Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp); 2496205663Srmacklem if (error != 0) 2497205663Srmacklem /* Make sure the server replies ESTALE to the client. */ 2498205663Srmacklem error = ESTALE; 2499191783Srmacklem if (nam && !error) { 2500191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2501192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2502191783Srmacklem if (error) { 2503191783Srmacklem if (nfs_rootfhset) { 2504191783Srmacklem exp->nes_exflag = 0; 2505192121Srmacklem exp->nes_numsecflavor = 0; 2506191783Srmacklem error = 0; 2507191783Srmacklem } else { 2508191783Srmacklem vput(*vpp); 2509191783Srmacklem } 2510192121Srmacklem } else { 2511192121Srmacklem /* Copy the security flavors. */ 2512192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2513192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2514191783Srmacklem } 2515191783Srmacklem } 2516216700Srmacklem if (error == 0 && lktype == LK_SHARED) 2517216700Srmacklem /* 2518216700Srmacklem * It would be much better to pass lktype to VFS_FHTOVP(), 2519216700Srmacklem * but this will have to do until VFS_FHTOVP() has a lock 2520216700Srmacklem * type argument like VFS_VGET(). 2521216700Srmacklem */ 2522216700Srmacklem vn_lock(*vpp, LK_DOWNGRADE | LK_RETRY); 2523191783Srmacklem return (error); 2524191783Srmacklem} 2525191783Srmacklem 2526191783Srmacklem/* 2527191783Srmacklem * Do the pathconf vnode op. 2528191783Srmacklem */ 2529191783Srmacklemint 2530191783Srmacklemnfsvno_pathconf(struct vnode *vp, int flag, register_t *retf, 2531191783Srmacklem struct ucred *cred, struct thread *p) 2532191783Srmacklem{ 2533191783Srmacklem int error; 2534191783Srmacklem 2535191783Srmacklem error = VOP_PATHCONF(vp, flag, retf); 2536191783Srmacklem return (error); 2537191783Srmacklem} 2538191783Srmacklem 2539191783Srmacklem/* 2540191783Srmacklem * nfsd_fhtovp() - convert a fh to a vnode ptr 2541191783Srmacklem * - look up fsid in mount list (if not found ret error) 2542191783Srmacklem * - get vp and export rights by calling nfsvno_fhtovp() 2543191783Srmacklem * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2544191783Srmacklem * for AUTH_SYS 2545217063Srmacklem * - if mpp != NULL, return the mount point so that it can 2546217063Srmacklem * be used for vn_finished_write() by the caller 2547191783Srmacklem */ 2548191783Srmacklemvoid 2549216700Srmacklemnfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype, 2550191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, 2551191783Srmacklem struct mount **mpp, int startwrite, struct thread *p) 2552191783Srmacklem{ 2553191783Srmacklem struct mount *mp; 2554191783Srmacklem struct ucred *credanon; 2555191783Srmacklem fhandle_t *fhp; 2556191783Srmacklem 2557191783Srmacklem fhp = (fhandle_t *)nfp->nfsrvfh_data; 2558191783Srmacklem /* 2559191783Srmacklem * Check for the special case of the nfsv4root_fh. 2560191783Srmacklem */ 2561217017Srmacklem mp = vfs_busyfs(&fhp->fh_fsid); 2562217063Srmacklem if (mpp != NULL) 2563217063Srmacklem *mpp = mp; 2564217017Srmacklem if (mp == NULL) { 2565191783Srmacklem *vpp = NULL; 2566191783Srmacklem nd->nd_repstat = ESTALE; 2567191783Srmacklem return; 2568191783Srmacklem } 2569191783Srmacklem 2570191783Srmacklem if (startwrite) 2571191783Srmacklem vn_start_write(NULL, mpp, V_WAIT); 2572191783Srmacklem 2573216700Srmacklem nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp, 2574191783Srmacklem &credanon); 2575217017Srmacklem vfs_unbusy(mp); 2576191783Srmacklem 2577191783Srmacklem /* 2578191783Srmacklem * For NFSv4 without a pseudo root fs, unexported file handles 2579191783Srmacklem * can be returned, so that Lookup works everywhere. 2580191783Srmacklem */ 2581191783Srmacklem if (!nd->nd_repstat && exp->nes_exflag == 0 && 2582191783Srmacklem !(nd->nd_flag & ND_NFSV4)) { 2583191783Srmacklem vput(*vpp); 2584191783Srmacklem nd->nd_repstat = EACCES; 2585191783Srmacklem } 2586191783Srmacklem 2587191783Srmacklem /* 2588191783Srmacklem * Personally, I've never seen any point in requiring a 2589191783Srmacklem * reserved port#, since only in the rare case where the 2590191783Srmacklem * clients are all boxes with secure system priviledges, 2591191783Srmacklem * does it provide any enhanced security, but... some people 2592191783Srmacklem * believe it to be useful and keep putting this code back in. 2593191783Srmacklem * (There is also some "security checker" out there that 2594191783Srmacklem * complains if the nfs server doesn't enforce this.) 2595191783Srmacklem * However, note the following: 2596191783Srmacklem * RFC3530 (NFSv4) specifies that a reserved port# not be 2597191783Srmacklem * required. 2598191783Srmacklem * RFC2623 recommends that, if a reserved port# is checked for, 2599191783Srmacklem * that there be a way to turn that off--> ifdef'd. 2600191783Srmacklem */ 2601191783Srmacklem#ifdef NFS_REQRSVPORT 2602191783Srmacklem if (!nd->nd_repstat) { 2603192121Srmacklem struct sockaddr_in *saddr; 2604192121Srmacklem struct sockaddr_in6 *saddr6; 2605192121Srmacklem 2606192121Srmacklem saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 2607192121Srmacklem saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 2608192121Srmacklem if (!(nd->nd_flag & ND_NFSV4) && 2609192121Srmacklem ((saddr->sin_family == AF_INET && 2610192121Srmacklem ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 2611192121Srmacklem (saddr6->sin6_family == AF_INET6 && 2612192121Srmacklem ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 2613192121Srmacklem vput(*vpp); 2614192121Srmacklem nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2615192121Srmacklem } 2616191783Srmacklem } 2617191783Srmacklem#endif /* NFS_REQRSVPORT */ 2618191783Srmacklem 2619191783Srmacklem /* 2620191783Srmacklem * Check/setup credentials. 2621191783Srmacklem */ 2622191783Srmacklem if (!nd->nd_repstat) { 2623191783Srmacklem nd->nd_saveduid = nd->nd_cred->cr_uid; 2624191783Srmacklem nd->nd_repstat = nfsd_excred(nd, exp, credanon); 2625191783Srmacklem if (nd->nd_repstat) 2626191783Srmacklem vput(*vpp); 2627191783Srmacklem } 2628191940Skan if (credanon != NULL) 2629191940Skan crfree(credanon); 2630191783Srmacklem if (nd->nd_repstat) { 2631191783Srmacklem if (startwrite) 2632191783Srmacklem vn_finished_write(mp); 2633191783Srmacklem *vpp = NULL; 2634217063Srmacklem if (mpp != NULL) 2635217063Srmacklem *mpp = NULL; 2636191783Srmacklem } 2637191783Srmacklem} 2638191783Srmacklem 2639191783Srmacklem/* 2640191783Srmacklem * glue for fp. 2641191783Srmacklem */ 2642191783Srmacklemint 2643191783Srmacklemfp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 2644191783Srmacklem{ 2645191783Srmacklem struct filedesc *fdp; 2646191783Srmacklem struct file *fp; 2647191783Srmacklem 2648191783Srmacklem fdp = p->td_proc->p_fd; 2649191783Srmacklem if (fd >= fdp->fd_nfiles || 2650191783Srmacklem (fp = fdp->fd_ofiles[fd]) == NULL) 2651191783Srmacklem return (EBADF); 2652191783Srmacklem *fpp = fp; 2653191783Srmacklem return (0); 2654191783Srmacklem} 2655191783Srmacklem 2656191783Srmacklem/* 2657192121Srmacklem * Called from nfssvc() to update the exports list. Just call 2658191783Srmacklem * vfs_export(). This has to be done, since the v4 root fake fs isn't 2659191783Srmacklem * in the mount list. 2660191783Srmacklem */ 2661191783Srmacklemint 2662191783Srmacklemnfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 2663191783Srmacklem{ 2664191783Srmacklem struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 2665191783Srmacklem int error; 2666191783Srmacklem struct nameidata nd; 2667191783Srmacklem fhandle_t fh; 2668191783Srmacklem 2669191783Srmacklem error = vfs_export(&nfsv4root_mnt, &nfsexargp->export); 2670216894Srmacklem if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0) 2671191783Srmacklem nfs_rootfhset = 0; 2672216894Srmacklem else if (error == 0) { 2673191783Srmacklem if (nfsexargp->fspec == NULL) 2674191783Srmacklem return (EPERM); 2675191783Srmacklem /* 2676191783Srmacklem * If fspec != NULL, this is the v4root path. 2677191783Srmacklem */ 2678191783Srmacklem NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_USERSPACE, 2679191783Srmacklem nfsexargp->fspec, p); 2680191783Srmacklem if ((error = namei(&nd)) != 0) 2681191783Srmacklem return (error); 2682191783Srmacklem error = nfsvno_getfh(nd.ni_vp, &fh, p); 2683191783Srmacklem vrele(nd.ni_vp); 2684191783Srmacklem if (!error) { 2685191783Srmacklem nfs_rootfh.nfsrvfh_len = NFSX_MYFH; 2686191783Srmacklem NFSBCOPY((caddr_t)&fh, 2687191783Srmacklem nfs_rootfh.nfsrvfh_data, 2688191783Srmacklem sizeof (fhandle_t)); 2689191783Srmacklem nfs_rootfhset = 1; 2690191783Srmacklem } 2691191783Srmacklem } 2692191783Srmacklem return (error); 2693191783Srmacklem} 2694191783Srmacklem 2695191783Srmacklem/* 2696191783Srmacklem * Get the tcp socket sequence numbers we need. 2697191783Srmacklem * (Maybe this should be moved to the tcp sources?) 2698191783Srmacklem */ 2699191783Srmacklemint 2700191783Srmacklemnfsrv_getsocksndseq(struct socket *so, tcp_seq *maxp, tcp_seq *unap) 2701191783Srmacklem{ 2702191783Srmacklem struct inpcb *inp; 2703191783Srmacklem struct tcpcb *tp; 2704191783Srmacklem 2705191783Srmacklem inp = sotoinpcb(so); 2706205010Srwatson KASSERT(inp != NULL, ("nfsrv_getsocksndseq: inp == NULL")); 2707205010Srwatson INP_RLOCK(inp); 2708205010Srwatson if (inp->inp_flags & (INP_TIMEWAIT | INP_DROPPED)) { 2709205010Srwatson INP_RUNLOCK(inp); 2710205010Srwatson return (EPIPE); 2711191783Srmacklem } 2712191783Srmacklem tp = intotcpcb(inp); 2713205010Srwatson if (tp->t_state != TCPS_ESTABLISHED) { 2714205010Srwatson INP_RUNLOCK(inp); 2715205010Srwatson return (EPIPE); 2716191783Srmacklem } 2717205010Srwatson *maxp = tp->snd_max; 2718205010Srwatson *unap = tp->snd_una; 2719191783Srmacklem INP_RUNLOCK(inp); 2720205010Srwatson return (0); 2721191783Srmacklem} 2722191783Srmacklem 2723191783Srmacklem/* 2724191783Srmacklem * This function needs to test to see if the system is near its limit 2725191783Srmacklem * for memory allocation via malloc() or mget() and return True iff 2726191783Srmacklem * either of these resources are near their limit. 2727191783Srmacklem * XXX (For now, this is just a stub.) 2728191783Srmacklem */ 2729191783Srmacklemint nfsrv_testmalloclimit = 0; 2730191783Srmacklemint 2731191783Srmacklemnfsrv_mallocmget_limit(void) 2732191783Srmacklem{ 2733191783Srmacklem static int printmesg = 0; 2734191783Srmacklem static int testval = 1; 2735191783Srmacklem 2736191783Srmacklem if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 2737191783Srmacklem if ((printmesg++ % 100) == 0) 2738191783Srmacklem printf("nfsd: malloc/mget near limit\n"); 2739191783Srmacklem return (1); 2740191783Srmacklem } 2741191783Srmacklem return (0); 2742191783Srmacklem} 2743191783Srmacklem 2744191783Srmacklem/* 2745191783Srmacklem * BSD specific initialization of a mount point. 2746191783Srmacklem */ 2747191783Srmacklemvoid 2748191783Srmacklemnfsd_mntinit(void) 2749191783Srmacklem{ 2750191783Srmacklem static int inited = 0; 2751191783Srmacklem 2752191783Srmacklem if (inited) 2753191783Srmacklem return; 2754191783Srmacklem inited = 1; 2755191783Srmacklem nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 2756191783Srmacklem TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist); 2757191783Srmacklem nfsv4root_mnt.mnt_export = NULL; 2758191783Srmacklem TAILQ_INIT(&nfsv4root_opt); 2759191783Srmacklem TAILQ_INIT(&nfsv4root_newopt); 2760191783Srmacklem nfsv4root_mnt.mnt_opt = &nfsv4root_opt; 2761191783Srmacklem nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt; 2762191783Srmacklem nfsv4root_mnt.mnt_nvnodelistsize = 0; 2763191783Srmacklem} 2764191783Srmacklem 2765191783Srmacklem/* 2766191783Srmacklem * Get a vnode for a file handle, without checking exports, etc. 2767191783Srmacklem */ 2768191783Srmacklemstruct vnode * 2769191783Srmacklemnfsvno_getvp(fhandle_t *fhp) 2770191783Srmacklem{ 2771191783Srmacklem struct mount *mp; 2772191783Srmacklem struct vnode *vp; 2773191783Srmacklem int error; 2774191783Srmacklem 2775217017Srmacklem mp = vfs_busyfs(&fhp->fh_fsid); 2776191783Srmacklem if (mp == NULL) 2777191783Srmacklem return (NULL); 2778191783Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, &vp); 2779217017Srmacklem vfs_unbusy(mp); 2780191783Srmacklem if (error) 2781191783Srmacklem return (NULL); 2782191783Srmacklem return (vp); 2783191783Srmacklem} 2784191783Srmacklem 2785191783Srmacklem/* 2786191783Srmacklem * Do a local VOP_ADVLOCK(). 2787191783Srmacklem */ 2788191783Srmacklemint 2789191783Srmacklemnfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 2790192256Srmacklem u_int64_t end, struct thread *td) 2791191783Srmacklem{ 2792191783Srmacklem int error; 2793191783Srmacklem struct flock fl; 2794191783Srmacklem u_int64_t tlen; 2795191783Srmacklem 2796212833Srmacklem if (nfsrv_dolocallocks == 0) 2797191783Srmacklem return (0); 2798216893Srmacklem 2799216893Srmacklem /* Check for VI_DOOMED here, so that VOP_ADVLOCK() isn't performed. */ 2800216893Srmacklem if ((vp->v_iflag & VI_DOOMED) != 0) 2801216893Srmacklem return (EPERM); 2802216893Srmacklem 2803191783Srmacklem fl.l_whence = SEEK_SET; 2804191783Srmacklem fl.l_type = ftype; 2805191783Srmacklem fl.l_start = (off_t)first; 2806191783Srmacklem if (end == NFS64BITSSET) { 2807191783Srmacklem fl.l_len = 0; 2808191783Srmacklem } else { 2809191783Srmacklem tlen = end - first; 2810191783Srmacklem fl.l_len = (off_t)tlen; 2811191783Srmacklem } 2812191783Srmacklem /* 2813192256Srmacklem * For FreeBSD8, the l_pid and l_sysid must be set to the same 2814192256Srmacklem * values for all calls, so that all locks will be held by the 2815192256Srmacklem * nfsd server. (The nfsd server handles conflicts between the 2816192256Srmacklem * various clients.) 2817192256Srmacklem * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 2818192256Srmacklem * bytes, so it can't be put in l_sysid. 2819191783Srmacklem */ 2820192503Srmacklem if (nfsv4_sysid == 0) 2821192503Srmacklem nfsv4_sysid = nlm_acquire_next_sysid(); 2822192256Srmacklem fl.l_pid = (pid_t)0; 2823192503Srmacklem fl.l_sysid = (int)nfsv4_sysid; 2824192256Srmacklem 2825192256Srmacklem NFSVOPUNLOCK(vp, 0, td); 2826212833Srmacklem if (ftype == F_UNLCK) 2827212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, 2828212833Srmacklem (F_POSIX | F_REMOTE)); 2829212833Srmacklem else 2830212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 2831212833Srmacklem (F_POSIX | F_REMOTE)); 2832192256Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, td); 2833191783Srmacklem return (error); 2834191783Srmacklem} 2835191783Srmacklem 2836191783Srmacklem/* 2837191783Srmacklem * Check the nfsv4 root exports. 2838191783Srmacklem */ 2839191783Srmacklemint 2840191783Srmacklemnfsvno_v4rootexport(struct nfsrv_descript *nd) 2841191783Srmacklem{ 2842191783Srmacklem struct ucred *credanon; 2843192121Srmacklem int exflags, error, numsecflavor, *secflavors, i; 2844191783Srmacklem 2845191783Srmacklem error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags, 2846192121Srmacklem &credanon, &numsecflavor, &secflavors); 2847191783Srmacklem if (error) 2848191783Srmacklem return (NFSERR_PROGUNAVAIL); 2849191940Skan if (credanon != NULL) 2850191940Skan crfree(credanon); 2851192121Srmacklem for (i = 0; i < numsecflavor; i++) { 2852192121Srmacklem if (secflavors[i] == AUTH_SYS) 2853192121Srmacklem nd->nd_flag |= ND_EXAUTHSYS; 2854192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5) 2855192121Srmacklem nd->nd_flag |= ND_EXGSS; 2856192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5I) 2857192121Srmacklem nd->nd_flag |= ND_EXGSSINTEGRITY; 2858192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5P) 2859192121Srmacklem nd->nd_flag |= ND_EXGSSPRIVACY; 2860192121Srmacklem } 2861191783Srmacklem return (0); 2862191783Srmacklem} 2863191783Srmacklem 2864191783Srmacklem/* 2865191783Srmacklem * Nfs server psuedo system call for the nfsd's 2866191783Srmacklem */ 2867191783Srmacklem/* 2868191783Srmacklem * MPSAFE 2869191783Srmacklem */ 2870191783Srmacklemstatic int 2871191783Srmacklemnfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 2872191783Srmacklem{ 2873191783Srmacklem struct file *fp; 2874192017Srmacklem struct nfsd_addsock_args sockarg; 2875192017Srmacklem struct nfsd_nfsd_args nfsdarg; 2876191783Srmacklem int error; 2877191783Srmacklem 2878191783Srmacklem if (uap->flag & NFSSVC_NFSDADDSOCK) { 2879192017Srmacklem error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 2880191783Srmacklem if (error) 2881191783Srmacklem return (error); 2882192017Srmacklem if ((error = fget(td, sockarg.sock, &fp)) != 0) { 2883191783Srmacklem return (error); 2884191783Srmacklem } 2885191783Srmacklem if (fp->f_type != DTYPE_SOCKET) { 2886191783Srmacklem fdrop(fp, td); 2887191783Srmacklem return (EPERM); 2888191783Srmacklem } 2889191783Srmacklem error = nfsrvd_addsock(fp); 2890191783Srmacklem fdrop(fp, td); 2891191783Srmacklem } else if (uap->flag & NFSSVC_NFSDNFSD) { 2892192017Srmacklem if (uap->argp == NULL) 2893192017Srmacklem return (EINVAL); 2894192017Srmacklem error = copyin(uap->argp, (caddr_t)&nfsdarg, 2895192017Srmacklem sizeof (nfsdarg)); 2896192017Srmacklem if (error) 2897192017Srmacklem return (error); 2898192017Srmacklem error = nfsrvd_nfsd(td, &nfsdarg); 2899191783Srmacklem } else { 2900191783Srmacklem error = nfssvc_srvcall(td, uap, td->td_ucred); 2901191783Srmacklem } 2902191783Srmacklem return (error); 2903191783Srmacklem} 2904191783Srmacklem 2905191783Srmacklemstatic int 2906191783Srmacklemnfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 2907191783Srmacklem{ 2908191783Srmacklem struct nfsex_args export; 2909191783Srmacklem struct file *fp = NULL; 2910191783Srmacklem int stablefd, len; 2911191783Srmacklem struct nfsd_clid adminrevoke; 2912191783Srmacklem struct nfsd_dumplist dumplist; 2913191783Srmacklem struct nfsd_dumpclients *dumpclients; 2914191783Srmacklem struct nfsd_dumplocklist dumplocklist; 2915191783Srmacklem struct nfsd_dumplocks *dumplocks; 2916191783Srmacklem struct nameidata nd; 2917191783Srmacklem vnode_t vp; 2918191783Srmacklem int error = EINVAL; 2919217432Srmacklem struct proc *procp; 2920191783Srmacklem 2921191783Srmacklem if (uap->flag & NFSSVC_PUBLICFH) { 2922191783Srmacklem NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 2923191783Srmacklem sizeof (fhandle_t)); 2924191783Srmacklem error = copyin(uap->argp, 2925191783Srmacklem &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 2926191783Srmacklem if (!error) 2927191783Srmacklem nfs_pubfhset = 1; 2928191783Srmacklem } else if (uap->flag & NFSSVC_V4ROOTEXPORT) { 2929191783Srmacklem error = copyin(uap->argp,(caddr_t)&export, 2930191783Srmacklem sizeof (struct nfsex_args)); 2931191783Srmacklem if (!error) 2932191783Srmacklem error = nfsrv_v4rootexport(&export, cred, p); 2933191783Srmacklem } else if (uap->flag & NFSSVC_NOPUBLICFH) { 2934191783Srmacklem nfs_pubfhset = 0; 2935191783Srmacklem error = 0; 2936191783Srmacklem } else if (uap->flag & NFSSVC_STABLERESTART) { 2937191783Srmacklem error = copyin(uap->argp, (caddr_t)&stablefd, 2938191783Srmacklem sizeof (int)); 2939191783Srmacklem if (!error) 2940191783Srmacklem error = fp_getfvp(p, stablefd, &fp, &vp); 2941191783Srmacklem if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 2942191783Srmacklem error = EBADF; 2943191783Srmacklem if (!error && newnfs_numnfsd != 0) 2944191783Srmacklem error = EPERM; 2945191783Srmacklem if (!error) { 2946191783Srmacklem nfsrv_stablefirst.nsf_fp = fp; 2947191783Srmacklem nfsrv_setupstable(p); 2948191783Srmacklem } 2949191783Srmacklem } else if (uap->flag & NFSSVC_ADMINREVOKE) { 2950191783Srmacklem error = copyin(uap->argp, (caddr_t)&adminrevoke, 2951191783Srmacklem sizeof (struct nfsd_clid)); 2952191783Srmacklem if (!error) 2953191783Srmacklem error = nfsrv_adminrevoke(&adminrevoke, p); 2954191783Srmacklem } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 2955191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplist, 2956191783Srmacklem sizeof (struct nfsd_dumplist)); 2957191783Srmacklem if (!error && (dumplist.ndl_size < 1 || 2958191783Srmacklem dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 2959191783Srmacklem error = EPERM; 2960191783Srmacklem if (!error) { 2961191783Srmacklem len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 2962191783Srmacklem dumpclients = (struct nfsd_dumpclients *)malloc(len, 2963191783Srmacklem M_TEMP, M_WAITOK); 2964191783Srmacklem nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 2965191783Srmacklem error = copyout(dumpclients, 2966191783Srmacklem CAST_USER_ADDR_T(dumplist.ndl_list), len); 2967191783Srmacklem free((caddr_t)dumpclients, M_TEMP); 2968191783Srmacklem } 2969191783Srmacklem } else if (uap->flag & NFSSVC_DUMPLOCKS) { 2970191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplocklist, 2971191783Srmacklem sizeof (struct nfsd_dumplocklist)); 2972191783Srmacklem if (!error && (dumplocklist.ndllck_size < 1 || 2973191783Srmacklem dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 2974191783Srmacklem error = EPERM; 2975191783Srmacklem if (!error) 2976191783Srmacklem error = nfsrv_lookupfilename(&nd, 2977191783Srmacklem dumplocklist.ndllck_fname, p); 2978191783Srmacklem if (!error) { 2979191783Srmacklem len = sizeof (struct nfsd_dumplocks) * 2980191783Srmacklem dumplocklist.ndllck_size; 2981191783Srmacklem dumplocks = (struct nfsd_dumplocks *)malloc(len, 2982191783Srmacklem M_TEMP, M_WAITOK); 2983191783Srmacklem nfsrv_dumplocks(nd.ni_vp, dumplocks, 2984191783Srmacklem dumplocklist.ndllck_size, p); 2985191783Srmacklem vput(nd.ni_vp); 2986191783Srmacklem error = copyout(dumplocks, 2987191783Srmacklem CAST_USER_ADDR_T(dumplocklist.ndllck_list), len); 2988191783Srmacklem free((caddr_t)dumplocks, M_TEMP); 2989191783Srmacklem } 2990217432Srmacklem } else if (uap->flag & NFSSVC_BACKUPSTABLE) { 2991217432Srmacklem procp = p->td_proc; 2992217432Srmacklem PROC_LOCK(procp); 2993217432Srmacklem nfsd_master_pid = procp->p_pid; 2994217432Srmacklem bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1); 2995217432Srmacklem nfsd_master_start = procp->p_stats->p_start; 2996217432Srmacklem nfsd_master_proc = procp; 2997217432Srmacklem PROC_UNLOCK(procp); 2998191783Srmacklem } 2999191783Srmacklem return (error); 3000191783Srmacklem} 3001191783Srmacklem 3002192121Srmacklem/* 3003192121Srmacklem * Check exports. 3004192121Srmacklem * Returns 0 if ok, 1 otherwise. 3005192121Srmacklem */ 3006192121Srmacklemint 3007192121Srmacklemnfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 3008192121Srmacklem{ 3009192121Srmacklem int i; 3010192121Srmacklem 3011192121Srmacklem /* 3012192121Srmacklem * This seems odd, but allow the case where the security flavor 3013192121Srmacklem * list is empty. This happens when NFSv4 is traversing non-exported 3014192121Srmacklem * file systems. Exported file systems should always have a non-empty 3015192121Srmacklem * security flavor list. 3016192121Srmacklem */ 3017192121Srmacklem if (exp->nes_numsecflavor == 0) 3018192121Srmacklem return (0); 3019192121Srmacklem 3020192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) { 3021192121Srmacklem /* 3022192121Srmacklem * The tests for privacy and integrity must be first, 3023192121Srmacklem * since ND_GSS is set for everything but AUTH_SYS. 3024192121Srmacklem */ 3025192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 3026192121Srmacklem (nd->nd_flag & ND_GSSPRIVACY)) 3027192121Srmacklem return (0); 3028192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 3029192121Srmacklem (nd->nd_flag & ND_GSSINTEGRITY)) 3030192121Srmacklem return (0); 3031192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 3032192121Srmacklem (nd->nd_flag & ND_GSS)) 3033192121Srmacklem return (0); 3034192121Srmacklem if (exp->nes_secflavors[i] == AUTH_SYS && 3035192121Srmacklem (nd->nd_flag & ND_GSS) == 0) 3036192121Srmacklem return (0); 3037192121Srmacklem } 3038192121Srmacklem return (1); 3039192121Srmacklem} 3040192121Srmacklem 3041214224Srmacklem/* 3042214224Srmacklem * Calculate a hash value for the fid in a file handle. 3043214224Srmacklem */ 3044214255Srmacklemuint32_t 3045214224Srmacklemnfsrv_hashfh(fhandle_t *fhp) 3046214224Srmacklem{ 3047214255Srmacklem uint32_t hashval; 3048214224Srmacklem 3049214255Srmacklem hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0); 3050214224Srmacklem return (hashval); 3051214224Srmacklem} 3052214224Srmacklem 3053217432Srmacklem/* 3054217432Srmacklem * Signal the userland master nfsd to backup the stable restart file. 3055217432Srmacklem */ 3056217432Srmacklemvoid 3057217432Srmacklemnfsrv_backupstable(void) 3058217432Srmacklem{ 3059217432Srmacklem struct proc *procp; 3060217432Srmacklem 3061217432Srmacklem if (nfsd_master_proc != NULL) { 3062217432Srmacklem procp = pfind(nfsd_master_pid); 3063217432Srmacklem /* Try to make sure it is the correct process. */ 3064217432Srmacklem if (procp == nfsd_master_proc && 3065217432Srmacklem procp->p_stats->p_start.tv_sec == 3066217432Srmacklem nfsd_master_start.tv_sec && 3067217432Srmacklem procp->p_stats->p_start.tv_usec == 3068217432Srmacklem nfsd_master_start.tv_usec && 3069217432Srmacklem strcmp(procp->p_comm, nfsd_master_comm) == 0) 3070217432Srmacklem psignal(procp, SIGUSR2); 3071217432Srmacklem else 3072217432Srmacklem nfsd_master_proc = NULL; 3073217432Srmacklem 3074217432Srmacklem if (procp != NULL) 3075217432Srmacklem PROC_UNLOCK(procp); 3076217432Srmacklem } 3077217432Srmacklem} 3078217432Srmacklem 3079191783Srmacklemextern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 3080191783Srmacklem 3081191783Srmacklem/* 3082191783Srmacklem * Called once to initialize data structures... 3083191783Srmacklem */ 3084191783Srmacklemstatic int 3085191783Srmacklemnfsd_modevent(module_t mod, int type, void *data) 3086191783Srmacklem{ 3087191783Srmacklem int error = 0; 3088191783Srmacklem static int loaded = 0; 3089191783Srmacklem 3090191783Srmacklem switch (type) { 3091191783Srmacklem case MOD_LOAD: 3092191783Srmacklem if (loaded) 3093191783Srmacklem return (0); 3094191783Srmacklem newnfs_portinit(); 3095191783Srmacklem mtx_init(&nfs_cache_mutex, "nfs_cache_mutex", NULL, MTX_DEF); 3096191783Srmacklem mtx_init(&nfs_v4root_mutex, "nfs_v4root_mutex", NULL, MTX_DEF); 3097191783Srmacklem mtx_init(&nfsv4root_mnt.mnt_mtx, "struct mount mtx", NULL, 3098191783Srmacklem MTX_DEF); 3099191783Srmacklem lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0); 3100191783Srmacklem nfsrvd_initcache(); 3101191783Srmacklem nfsd_init(); 3102191783Srmacklem NFSD_LOCK(); 3103191783Srmacklem nfsrvd_init(0); 3104191783Srmacklem NFSD_UNLOCK(); 3105191783Srmacklem nfsd_mntinit(); 3106191783Srmacklem#ifdef VV_DISABLEDELEG 3107191783Srmacklem vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 3108191783Srmacklem vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 3109191783Srmacklem#endif 3110191783Srmacklem nfsd_call_servertimer = nfsrv_servertimer; 3111191783Srmacklem nfsd_call_nfsd = nfssvc_nfsd; 3112191783Srmacklem loaded = 1; 3113191783Srmacklem break; 3114191783Srmacklem 3115191783Srmacklem case MOD_UNLOAD: 3116191783Srmacklem if (newnfs_numnfsd != 0) { 3117191783Srmacklem error = EBUSY; 3118191783Srmacklem break; 3119191783Srmacklem } 3120191783Srmacklem 3121191783Srmacklem#ifdef VV_DISABLEDELEG 3122191783Srmacklem vn_deleg_ops.vndeleg_recall = NULL; 3123191783Srmacklem vn_deleg_ops.vndeleg_disable = NULL; 3124191783Srmacklem#endif 3125191783Srmacklem nfsd_call_servertimer = NULL; 3126191783Srmacklem nfsd_call_nfsd = NULL; 3127217335Szack 3128217335Szack /* Clean the NFS server reply cache */ 3129217335Szack nfsrvd_cleancache(); 3130217335Szack 3131191783Srmacklem /* and get rid of the locks */ 3132191783Srmacklem mtx_destroy(&nfs_cache_mutex); 3133191783Srmacklem mtx_destroy(&nfs_v4root_mutex); 3134191783Srmacklem mtx_destroy(&nfsv4root_mnt.mnt_mtx); 3135191783Srmacklem lockdestroy(&nfsv4root_mnt.mnt_explock); 3136191783Srmacklem loaded = 0; 3137191783Srmacklem break; 3138191783Srmacklem default: 3139191783Srmacklem error = EOPNOTSUPP; 3140191783Srmacklem break; 3141191783Srmacklem } 3142191783Srmacklem return error; 3143191783Srmacklem} 3144191783Srmacklemstatic moduledata_t nfsd_mod = { 3145191783Srmacklem "nfsd", 3146191783Srmacklem nfsd_modevent, 3147191783Srmacklem NULL, 3148191783Srmacklem}; 3149191783SrmacklemDECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 3150191783Srmacklem 3151191783Srmacklem/* So that loader and kldload(2) can find us, wherever we are.. */ 3152191783SrmacklemMODULE_VERSION(nfsd, 1); 3153191783SrmacklemMODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 3154216931SrmacklemMODULE_DEPEND(nfsd, nfslock, 1, 1, 1); 3155192574SrmacklemMODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 3156209191SrmacklemMODULE_DEPEND(nfsd, krpc, 1, 1, 1); 3157209191SrmacklemMODULE_DEPEND(nfsd, nfssvc, 1, 1, 1); 3158191783Srmacklem 3159