nfs_nfsdport.c revision 224077
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 224077 2011-07-16 08:04:57Z zack $"); 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); 57220530Srmacklemextern SVCPOOL *nfsrvd_pool; 58191783Srmacklemstruct vfsoptlist nfsv4root_opt, nfsv4root_newopt; 59191783SrmacklemNFSDLOCKMUTEX; 60191783Srmacklemstruct mtx nfs_cache_mutex; 61191783Srmacklemstruct mtx nfs_v4root_mutex; 62191783Srmacklemstruct nfsrvfh nfs_rootfh, nfs_pubfh; 63191783Srmacklemint nfs_pubfhset = 0, nfs_rootfhset = 0; 64217432Srmacklemstruct proc *nfsd_master_proc = NULL; 65217432Srmacklemstatic pid_t nfsd_master_pid = (pid_t)-1; 66217432Srmacklemstatic char nfsd_master_comm[MAXCOMLEN + 1]; 67217432Srmacklemstatic struct timeval nfsd_master_start; 68192503Srmacklemstatic uint32_t nfsv4_sysid = 0; 69191783Srmacklem 70192255Srmacklemstatic int nfssvc_srvcall(struct thread *, struct nfssvc_args *, 71192255Srmacklem struct ucred *); 72191783Srmacklem 73220645Srmacklemint nfsrv_enable_crossmntpt = 1; 74191783Srmacklemstatic int nfs_commit_blks; 75191783Srmacklemstatic int nfs_commit_miss; 76191783Srmacklemextern int nfsrv_issuedelegs; 77192255Srmacklemextern int nfsrv_dolocallocks; 78192255Srmacklem 79221615SrmacklemSYSCTL_NODE(_vfs, OID_AUTO, nfsd, CTLFLAG_RW, 0, "New NFS server"); 80221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, mirrormnt, CTLFLAG_RW, 81220645Srmacklem &nfsrv_enable_crossmntpt, 0, "Enable nfsd to cross mount points"); 82221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 83192255Srmacklem 0, ""); 84221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 85192255Srmacklem 0, ""); 86221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, issue_delegations, CTLFLAG_RW, 87192255Srmacklem &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); 88221615SrmacklemSYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_locallocks, CTLFLAG_RW, 89192255Srmacklem &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files"); 90191783Srmacklem 91191783Srmacklem#define NUM_HEURISTIC 1017 92191783Srmacklem#define NHUSE_INIT 64 93191783Srmacklem#define NHUSE_INC 16 94191783Srmacklem#define NHUSE_MAX 2048 95191783Srmacklem 96191783Srmacklemstatic struct nfsheur { 97191783Srmacklem struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 98191783Srmacklem off_t nh_nextr; /* next offset for sequential detection */ 99191783Srmacklem int nh_use; /* use count for selection */ 100191783Srmacklem int nh_seqcount; /* heuristic */ 101191783Srmacklem} nfsheur[NUM_HEURISTIC]; 102191783Srmacklem 103191783Srmacklem 104191783Srmacklem/* 105191783Srmacklem * Get attributes into nfsvattr structure. 106191783Srmacklem */ 107191783Srmacklemint 108191783Srmacklemnfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 109216693Srmacklem struct thread *p, int vpislocked) 110191783Srmacklem{ 111191783Srmacklem int error, lockedit = 0; 112191783Srmacklem 113216693Srmacklem if (vpislocked == 0) { 114216693Srmacklem /* 115216693Srmacklem * When vpislocked == 0, the vnode is either exclusively 116216693Srmacklem * locked by this thread or not locked by this thread. 117216693Srmacklem * As such, shared lock it, if not exclusively locked. 118216693Srmacklem */ 119216693Srmacklem if (VOP_ISLOCKED(vp) != LK_EXCLUSIVE) { 120216693Srmacklem lockedit = 1; 121216693Srmacklem vn_lock(vp, LK_SHARED | LK_RETRY); 122216693Srmacklem } 123191783Srmacklem } 124191783Srmacklem error = VOP_GETATTR(vp, &nvap->na_vattr, cred); 125216693Srmacklem if (lockedit != 0) 126216693Srmacklem VOP_UNLOCK(vp, 0); 127191783Srmacklem return (error); 128191783Srmacklem} 129191783Srmacklem 130191783Srmacklem/* 131191783Srmacklem * Get a file handle for a vnode. 132191783Srmacklem */ 133191783Srmacklemint 134191783Srmacklemnfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 135191783Srmacklem{ 136191783Srmacklem int error; 137191783Srmacklem 138191783Srmacklem NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 139191783Srmacklem fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 140191783Srmacklem error = VOP_VPTOFH(vp, &fhp->fh_fid); 141191783Srmacklem return (error); 142191783Srmacklem} 143191783Srmacklem 144191783Srmacklem/* 145191783Srmacklem * Perform access checking for vnodes obtained from file handles that would 146191783Srmacklem * refer to files already opened by a Unix client. You cannot just use 147200999Srmacklem * vn_writechk() and VOP_ACCESSX() for two reasons. 148200999Srmacklem * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write 149200999Srmacklem * case. 150191783Srmacklem * 2 - The owner is to be given access irrespective of mode bits for some 151191783Srmacklem * operations, so that processes that chmod after opening a file don't 152191783Srmacklem * break. 153191783Srmacklem */ 154191783Srmacklemint 155200999Srmacklemnfsvno_accchk(struct vnode *vp, accmode_t accmode, struct ucred *cred, 156200999Srmacklem struct nfsexstuff *exp, struct thread *p, int override, int vpislocked, 157200999Srmacklem u_int32_t *supportedtypep) 158191783Srmacklem{ 159191783Srmacklem struct vattr vattr; 160191783Srmacklem int error = 0, getret = 0; 161191783Srmacklem 162216893Srmacklem if (vpislocked == 0) { 163216893Srmacklem if (vn_lock(vp, LK_SHARED) != 0) 164216893Srmacklem return (EPERM); 165216893Srmacklem } 166191783Srmacklem if (accmode & VWRITE) { 167191783Srmacklem /* Just vn_writechk() changed to check rdonly */ 168191783Srmacklem /* 169191783Srmacklem * Disallow write attempts on read-only file systems; 170191783Srmacklem * unless the file is a socket or a block or character 171191783Srmacklem * device resident on the file system. 172191783Srmacklem */ 173191783Srmacklem if (NFSVNO_EXRDONLY(exp) || 174200999Srmacklem (vp->v_mount->mnt_flag & MNT_RDONLY)) { 175191783Srmacklem switch (vp->v_type) { 176191783Srmacklem case VREG: 177191783Srmacklem case VDIR: 178191783Srmacklem case VLNK: 179216893Srmacklem error = EROFS; 180191783Srmacklem default: 181191783Srmacklem break; 182191783Srmacklem } 183191783Srmacklem } 184191783Srmacklem /* 185191783Srmacklem * If there's shared text associated with 186191783Srmacklem * the inode, try to free it up once. If 187191783Srmacklem * we fail, we can't allow writing. 188191783Srmacklem */ 189216893Srmacklem if ((vp->v_vflag & VV_TEXT) != 0 && error == 0) 190216893Srmacklem error = ETXTBSY; 191191783Srmacklem } 192216893Srmacklem if (error != 0) { 193216893Srmacklem if (vpislocked == 0) 194216893Srmacklem VOP_UNLOCK(vp, 0); 195216893Srmacklem return (error); 196216893Srmacklem } 197191783Srmacklem 198191783Srmacklem /* 199191783Srmacklem * Should the override still be applied when ACLs are enabled? 200191783Srmacklem */ 201200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 202200999Srmacklem if (error != 0 && (accmode & (VDELETE | VDELETE_CHILD))) { 203200999Srmacklem /* 204200999Srmacklem * Try again with VEXPLICIT_DENY, to see if the test for 205200999Srmacklem * deletion is supported. 206200999Srmacklem */ 207200999Srmacklem error = VOP_ACCESSX(vp, accmode | VEXPLICIT_DENY, cred, p); 208200999Srmacklem if (error == 0) { 209200999Srmacklem if (vp->v_type == VDIR) { 210200999Srmacklem accmode &= ~(VDELETE | VDELETE_CHILD); 211200999Srmacklem accmode |= VWRITE; 212200999Srmacklem error = VOP_ACCESSX(vp, accmode, cred, p); 213200999Srmacklem } else if (supportedtypep != NULL) { 214200999Srmacklem *supportedtypep &= ~NFSACCESS_DELETE; 215200999Srmacklem } 216200999Srmacklem } 217200999Srmacklem } 218191783Srmacklem 219191783Srmacklem /* 220191783Srmacklem * Allow certain operations for the owner (reads and writes 221191783Srmacklem * on files that are already open). 222191783Srmacklem */ 223191783Srmacklem if (override != NFSACCCHK_NOOVERRIDE && 224191783Srmacklem (error == EPERM || error == EACCES)) { 225191783Srmacklem if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 226191783Srmacklem error = 0; 227191783Srmacklem else if (override & NFSACCCHK_ALLOWOWNER) { 228191783Srmacklem getret = VOP_GETATTR(vp, &vattr, cred); 229191783Srmacklem if (getret == 0 && cred->cr_uid == vattr.va_uid) 230191783Srmacklem error = 0; 231191783Srmacklem } 232191783Srmacklem } 233191783Srmacklem if (vpislocked == 0) 234216700Srmacklem VOP_UNLOCK(vp, 0); 235191783Srmacklem return (error); 236191783Srmacklem} 237191783Srmacklem 238191783Srmacklem/* 239191783Srmacklem * Set attribute(s) vnop. 240191783Srmacklem */ 241191783Srmacklemint 242191783Srmacklemnfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 243191783Srmacklem struct thread *p, struct nfsexstuff *exp) 244191783Srmacklem{ 245191783Srmacklem int error; 246191783Srmacklem 247191783Srmacklem error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 248191783Srmacklem return (error); 249191783Srmacklem} 250191783Srmacklem 251191783Srmacklem/* 252191783Srmacklem * Set up nameidata for a lookup() call and do it 253191783Srmacklem * For the cases where we are crossing mount points 254191783Srmacklem * (looking up the public fh path or the v4 root path when 255191783Srmacklem * not using a pseudo-root fs), set/release the Giant lock, 256191783Srmacklem * as required. 257191783Srmacklem */ 258191783Srmacklemint 259191783Srmacklemnfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 260191783Srmacklem struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p, 261191783Srmacklem struct vnode **retdirp) 262191783Srmacklem{ 263191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 264191783Srmacklem int i; 265191783Srmacklem struct iovec aiov; 266191783Srmacklem struct uio auio; 267191783Srmacklem int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 268191783Srmacklem int error = 0, crossmnt; 269191783Srmacklem char *cp; 270191783Srmacklem 271191783Srmacklem *retdirp = NULL; 272191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 273191783Srmacklem /* 274191783Srmacklem * Extract and set starting directory. 275191783Srmacklem */ 276191783Srmacklem if (dp->v_type != VDIR) { 277191783Srmacklem if (islocked) 278191783Srmacklem vput(dp); 279191783Srmacklem else 280191783Srmacklem vrele(dp); 281191783Srmacklem nfsvno_relpathbuf(ndp); 282191783Srmacklem return (ENOTDIR); 283191783Srmacklem } 284191783Srmacklem if (islocked) 285191783Srmacklem NFSVOPUNLOCK(dp, 0, p); 286191783Srmacklem VREF(dp); 287191783Srmacklem *retdirp = dp; 288191783Srmacklem if (NFSVNO_EXRDONLY(exp)) 289191783Srmacklem cnp->cn_flags |= RDONLY; 290191783Srmacklem ndp->ni_segflg = UIO_SYSSPACE; 291191783Srmacklem crossmnt = 1; 292191783Srmacklem 293191783Srmacklem if (nd->nd_flag & ND_PUBLOOKUP) { 294191783Srmacklem ndp->ni_loopcnt = 0; 295191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 296191783Srmacklem vrele(dp); 297191783Srmacklem /* 298191783Srmacklem * Check for degenerate pathnames here, since lookup() 299191783Srmacklem * panics on them. 300191783Srmacklem */ 301191783Srmacklem for (i = 1; i < ndp->ni_pathlen; i++) 302191783Srmacklem if (cnp->cn_pnbuf[i] != '/') 303191783Srmacklem break; 304191783Srmacklem if (i == ndp->ni_pathlen) { 305191783Srmacklem error = NFSERR_ACCES; 306191783Srmacklem goto out; 307191783Srmacklem } 308191783Srmacklem dp = rootvnode; 309191783Srmacklem VREF(dp); 310191783Srmacklem } 311220645Srmacklem } else if ((nfsrv_enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 312191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) { 313191783Srmacklem /* 314191783Srmacklem * Only cross mount points for NFSv4 when doing a 315191783Srmacklem * mount while traversing the file system above 316220645Srmacklem * the mount point, unless nfsrv_enable_crossmntpt is set. 317191783Srmacklem */ 318191783Srmacklem cnp->cn_flags |= NOCROSSMOUNT; 319191783Srmacklem crossmnt = 0; 320191783Srmacklem } 321191783Srmacklem 322191783Srmacklem /* 323191783Srmacklem * Initialize for scan, set ni_startdir and bump ref on dp again 324191783Srmacklem * becuase lookup() will dereference ni_startdir. 325191783Srmacklem */ 326191783Srmacklem 327191783Srmacklem cnp->cn_thread = p; 328191783Srmacklem ndp->ni_startdir = dp; 329191783Srmacklem ndp->ni_rootdir = rootvnode; 330191783Srmacklem 331191783Srmacklem if (!lockleaf) 332191783Srmacklem cnp->cn_flags |= LOCKLEAF; 333191783Srmacklem for (;;) { 334191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 335191783Srmacklem /* 336191783Srmacklem * Call lookup() to do the real work. If an error occurs, 337191783Srmacklem * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 338191783Srmacklem * we do not have to dereference anything before returning. 339191783Srmacklem * In either case ni_startdir will be dereferenced and NULLed 340191783Srmacklem * out. 341191783Srmacklem */ 342191783Srmacklem error = lookup(ndp); 343191783Srmacklem if (error) 344191783Srmacklem break; 345191783Srmacklem 346191783Srmacklem /* 347191783Srmacklem * Check for encountering a symbolic link. Trivial 348191783Srmacklem * termination occurs if no symlink encountered. 349191783Srmacklem */ 350191783Srmacklem if ((cnp->cn_flags & ISSYMLINK) == 0) { 351191783Srmacklem if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0) 352191783Srmacklem nfsvno_relpathbuf(ndp); 353191783Srmacklem if (ndp->ni_vp && !lockleaf) 354191783Srmacklem NFSVOPUNLOCK(ndp->ni_vp, 0, p); 355191783Srmacklem break; 356191783Srmacklem } 357191783Srmacklem 358191783Srmacklem /* 359191783Srmacklem * Validate symlink 360191783Srmacklem */ 361191783Srmacklem if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 362191783Srmacklem NFSVOPUNLOCK(ndp->ni_dvp, 0, p); 363191783Srmacklem if (!(nd->nd_flag & ND_PUBLOOKUP)) { 364191783Srmacklem error = EINVAL; 365191783Srmacklem goto badlink2; 366191783Srmacklem } 367191783Srmacklem 368191783Srmacklem if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 369191783Srmacklem error = ELOOP; 370191783Srmacklem goto badlink2; 371191783Srmacklem } 372191783Srmacklem if (ndp->ni_pathlen > 1) 373191783Srmacklem cp = uma_zalloc(namei_zone, M_WAITOK); 374191783Srmacklem else 375191783Srmacklem cp = cnp->cn_pnbuf; 376191783Srmacklem aiov.iov_base = cp; 377191783Srmacklem aiov.iov_len = MAXPATHLEN; 378191783Srmacklem auio.uio_iov = &aiov; 379191783Srmacklem auio.uio_iovcnt = 1; 380191783Srmacklem auio.uio_offset = 0; 381191783Srmacklem auio.uio_rw = UIO_READ; 382191783Srmacklem auio.uio_segflg = UIO_SYSSPACE; 383191783Srmacklem auio.uio_td = NULL; 384191783Srmacklem auio.uio_resid = MAXPATHLEN; 385191783Srmacklem error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 386191783Srmacklem if (error) { 387191783Srmacklem badlink1: 388191783Srmacklem if (ndp->ni_pathlen > 1) 389191783Srmacklem uma_zfree(namei_zone, cp); 390191783Srmacklem badlink2: 391191783Srmacklem vrele(ndp->ni_dvp); 392191783Srmacklem vput(ndp->ni_vp); 393191783Srmacklem break; 394191783Srmacklem } 395191783Srmacklem linklen = MAXPATHLEN - auio.uio_resid; 396191783Srmacklem if (linklen == 0) { 397191783Srmacklem error = ENOENT; 398191783Srmacklem goto badlink1; 399191783Srmacklem } 400191783Srmacklem if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 401191783Srmacklem error = ENAMETOOLONG; 402191783Srmacklem goto badlink1; 403191783Srmacklem } 404191783Srmacklem 405191783Srmacklem /* 406191783Srmacklem * Adjust or replace path 407191783Srmacklem */ 408191783Srmacklem if (ndp->ni_pathlen > 1) { 409191783Srmacklem NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 410191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 411191783Srmacklem cnp->cn_pnbuf = cp; 412191783Srmacklem } else 413191783Srmacklem cnp->cn_pnbuf[linklen] = '\0'; 414191783Srmacklem ndp->ni_pathlen += linklen; 415191783Srmacklem 416191783Srmacklem /* 417191783Srmacklem * Cleanup refs for next loop and check if root directory 418191783Srmacklem * should replace current directory. Normally ni_dvp 419191783Srmacklem * becomes the new base directory and is cleaned up when 420191783Srmacklem * we loop. Explicitly null pointers after invalidation 421191783Srmacklem * to clarify operation. 422191783Srmacklem */ 423191783Srmacklem vput(ndp->ni_vp); 424191783Srmacklem ndp->ni_vp = NULL; 425191783Srmacklem 426191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 427191783Srmacklem vrele(ndp->ni_dvp); 428191783Srmacklem ndp->ni_dvp = ndp->ni_rootdir; 429191783Srmacklem VREF(ndp->ni_dvp); 430191783Srmacklem } 431191783Srmacklem ndp->ni_startdir = ndp->ni_dvp; 432191783Srmacklem ndp->ni_dvp = NULL; 433191783Srmacklem } 434191783Srmacklem if (!lockleaf) 435191783Srmacklem cnp->cn_flags &= ~LOCKLEAF; 436191783Srmacklem 437191783Srmacklemout: 438191783Srmacklem if (error) { 439191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 440191783Srmacklem ndp->ni_vp = NULL; 441191783Srmacklem ndp->ni_dvp = NULL; 442191783Srmacklem ndp->ni_startdir = NULL; 443191783Srmacklem cnp->cn_flags &= ~HASBUF; 444191783Srmacklem } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 445191783Srmacklem ndp->ni_dvp = NULL; 446191783Srmacklem } 447191783Srmacklem return (error); 448191783Srmacklem} 449191783Srmacklem 450191783Srmacklem/* 451191783Srmacklem * Set up a pathname buffer and return a pointer to it and, optionally 452191783Srmacklem * set a hash pointer. 453191783Srmacklem */ 454191783Srmacklemvoid 455191783Srmacklemnfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 456191783Srmacklem{ 457191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 458191783Srmacklem 459191783Srmacklem cnp->cn_flags |= (NOMACCHECK | HASBUF); 460191783Srmacklem cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 461191783Srmacklem if (hashpp != NULL) 462191783Srmacklem *hashpp = NULL; 463191783Srmacklem *bufpp = cnp->cn_pnbuf; 464191783Srmacklem} 465191783Srmacklem 466191783Srmacklem/* 467191783Srmacklem * Release the above path buffer, if not released by nfsvno_namei(). 468191783Srmacklem */ 469191783Srmacklemvoid 470191783Srmacklemnfsvno_relpathbuf(struct nameidata *ndp) 471191783Srmacklem{ 472191783Srmacklem 473191783Srmacklem if ((ndp->ni_cnd.cn_flags & HASBUF) == 0) 474191783Srmacklem panic("nfsrelpath"); 475191783Srmacklem uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 476191783Srmacklem ndp->ni_cnd.cn_flags &= ~HASBUF; 477191783Srmacklem} 478191783Srmacklem 479191783Srmacklem/* 480191783Srmacklem * Readlink vnode op into an mbuf list. 481191783Srmacklem */ 482191783Srmacklemint 483191783Srmacklemnfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p, 484191783Srmacklem struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 485191783Srmacklem{ 486191783Srmacklem struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; 487191783Srmacklem struct iovec *ivp = iv; 488191783Srmacklem struct uio io, *uiop = &io; 489191783Srmacklem struct mbuf *mp, *mp2 = NULL, *mp3 = NULL; 490191783Srmacklem int i, len, tlen, error; 491191783Srmacklem 492191783Srmacklem len = 0; 493191783Srmacklem i = 0; 494191783Srmacklem while (len < NFS_MAXPATHLEN) { 495191783Srmacklem NFSMGET(mp); 496191783Srmacklem MCLGET(mp, M_WAIT); 497191783Srmacklem mp->m_len = NFSMSIZ(mp); 498191783Srmacklem if (len == 0) { 499191783Srmacklem mp3 = mp2 = mp; 500191783Srmacklem } else { 501191783Srmacklem mp2->m_next = mp; 502191783Srmacklem mp2 = mp; 503191783Srmacklem } 504191783Srmacklem if ((len + mp->m_len) > NFS_MAXPATHLEN) { 505191783Srmacklem mp->m_len = NFS_MAXPATHLEN - len; 506191783Srmacklem len = NFS_MAXPATHLEN; 507191783Srmacklem } else { 508191783Srmacklem len += mp->m_len; 509191783Srmacklem } 510191783Srmacklem ivp->iov_base = mtod(mp, caddr_t); 511191783Srmacklem ivp->iov_len = mp->m_len; 512191783Srmacklem i++; 513191783Srmacklem ivp++; 514191783Srmacklem } 515191783Srmacklem uiop->uio_iov = iv; 516191783Srmacklem uiop->uio_iovcnt = i; 517191783Srmacklem uiop->uio_offset = 0; 518191783Srmacklem uiop->uio_resid = len; 519191783Srmacklem uiop->uio_rw = UIO_READ; 520191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 521191783Srmacklem uiop->uio_td = NULL; 522191783Srmacklem error = VOP_READLINK(vp, uiop, cred); 523191783Srmacklem if (error) { 524191783Srmacklem m_freem(mp3); 525191783Srmacklem *lenp = 0; 526191783Srmacklem return (error); 527191783Srmacklem } 528191783Srmacklem if (uiop->uio_resid > 0) { 529191783Srmacklem len -= uiop->uio_resid; 530191783Srmacklem tlen = NFSM_RNDUP(len); 531191783Srmacklem nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len); 532191783Srmacklem } 533191783Srmacklem *lenp = len; 534191783Srmacklem *mpp = mp3; 535191783Srmacklem *mpendp = mp; 536191783Srmacklem return (0); 537191783Srmacklem} 538191783Srmacklem 539191783Srmacklem/* 540191783Srmacklem * Read vnode op call into mbuf list. 541191783Srmacklem */ 542191783Srmacklemint 543191783Srmacklemnfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 544191783Srmacklem struct thread *p, struct mbuf **mpp, struct mbuf **mpendp) 545191783Srmacklem{ 546191783Srmacklem struct mbuf *m; 547191783Srmacklem int i; 548191783Srmacklem struct iovec *iv; 549191783Srmacklem struct iovec *iv2; 550191783Srmacklem int error = 0, len, left, siz, tlen, ioflag = 0, hi, try = 32; 551191783Srmacklem struct mbuf *m2 = NULL, *m3; 552191783Srmacklem struct uio io, *uiop = &io; 553191783Srmacklem struct nfsheur *nh; 554191783Srmacklem 555191783Srmacklem /* 556191783Srmacklem * Calculate seqcount for heuristic 557191783Srmacklem */ 558191783Srmacklem /* 559191783Srmacklem * Locate best candidate 560191783Srmacklem */ 561191783Srmacklem 562191783Srmacklem hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 563191783Srmacklem nh = &nfsheur[hi]; 564191783Srmacklem 565191783Srmacklem while (try--) { 566191783Srmacklem if (nfsheur[hi].nh_vp == vp) { 567191783Srmacklem nh = &nfsheur[hi]; 568191783Srmacklem break; 569191783Srmacklem } 570191783Srmacklem if (nfsheur[hi].nh_use > 0) 571191783Srmacklem --nfsheur[hi].nh_use; 572191783Srmacklem hi = (hi + 1) % NUM_HEURISTIC; 573191783Srmacklem if (nfsheur[hi].nh_use < nh->nh_use) 574191783Srmacklem nh = &nfsheur[hi]; 575191783Srmacklem } 576191783Srmacklem 577191783Srmacklem if (nh->nh_vp != vp) { 578191783Srmacklem nh->nh_vp = vp; 579191783Srmacklem nh->nh_nextr = off; 580191783Srmacklem nh->nh_use = NHUSE_INIT; 581191783Srmacklem if (off == 0) 582191783Srmacklem nh->nh_seqcount = 4; 583191783Srmacklem else 584191783Srmacklem nh->nh_seqcount = 1; 585191783Srmacklem } 586191783Srmacklem 587191783Srmacklem /* 588191783Srmacklem * Calculate heuristic 589191783Srmacklem */ 590191783Srmacklem 591191783Srmacklem if ((off == 0 && nh->nh_seqcount > 0) || off == nh->nh_nextr) { 592191783Srmacklem if (++nh->nh_seqcount > IO_SEQMAX) 593191783Srmacklem nh->nh_seqcount = IO_SEQMAX; 594191783Srmacklem } else if (nh->nh_seqcount > 1) { 595191783Srmacklem nh->nh_seqcount = 1; 596191783Srmacklem } else { 597191783Srmacklem nh->nh_seqcount = 0; 598191783Srmacklem } 599191783Srmacklem nh->nh_use += NHUSE_INC; 600191783Srmacklem if (nh->nh_use > NHUSE_MAX) 601191783Srmacklem nh->nh_use = NHUSE_MAX; 602191783Srmacklem ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 603191783Srmacklem 604191783Srmacklem len = left = NFSM_RNDUP(cnt); 605191783Srmacklem m3 = NULL; 606191783Srmacklem /* 607191783Srmacklem * Generate the mbuf list with the uio_iov ref. to it. 608191783Srmacklem */ 609191783Srmacklem i = 0; 610191783Srmacklem while (left > 0) { 611191783Srmacklem NFSMGET(m); 612191783Srmacklem MCLGET(m, M_WAIT); 613191783Srmacklem m->m_len = 0; 614191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 615191783Srmacklem left -= siz; 616191783Srmacklem i++; 617191783Srmacklem if (m3) 618191783Srmacklem m2->m_next = m; 619191783Srmacklem else 620191783Srmacklem m3 = m; 621191783Srmacklem m2 = m; 622191783Srmacklem } 623191783Srmacklem MALLOC(iv, struct iovec *, i * sizeof (struct iovec), 624191783Srmacklem M_TEMP, M_WAITOK); 625191783Srmacklem uiop->uio_iov = iv2 = iv; 626191783Srmacklem m = m3; 627191783Srmacklem left = len; 628191783Srmacklem i = 0; 629191783Srmacklem while (left > 0) { 630191783Srmacklem if (m == NULL) 631191783Srmacklem panic("nfsvno_read iov"); 632191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 633191783Srmacklem if (siz > 0) { 634191783Srmacklem iv->iov_base = mtod(m, caddr_t) + m->m_len; 635191783Srmacklem iv->iov_len = siz; 636191783Srmacklem m->m_len += siz; 637191783Srmacklem left -= siz; 638191783Srmacklem iv++; 639191783Srmacklem i++; 640191783Srmacklem } 641191783Srmacklem m = m->m_next; 642191783Srmacklem } 643191783Srmacklem uiop->uio_iovcnt = i; 644191783Srmacklem uiop->uio_offset = off; 645191783Srmacklem uiop->uio_resid = len; 646191783Srmacklem uiop->uio_rw = UIO_READ; 647191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 648191783Srmacklem error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 649191783Srmacklem FREE((caddr_t)iv2, M_TEMP); 650191783Srmacklem if (error) { 651191783Srmacklem m_freem(m3); 652191783Srmacklem *mpp = NULL; 653191783Srmacklem return (error); 654191783Srmacklem } 655191783Srmacklem tlen = len - uiop->uio_resid; 656191783Srmacklem cnt = cnt < tlen ? cnt : tlen; 657191783Srmacklem tlen = NFSM_RNDUP(cnt); 658191783Srmacklem if (tlen == 0) { 659191783Srmacklem m_freem(m3); 660191783Srmacklem m3 = NULL; 661191783Srmacklem } else if (len != tlen || tlen != cnt) 662191783Srmacklem nfsrv_adj(m3, len - tlen, tlen - cnt); 663191783Srmacklem *mpp = m3; 664191783Srmacklem *mpendp = m2; 665191783Srmacklem return (0); 666191783Srmacklem} 667191783Srmacklem 668191783Srmacklem/* 669191783Srmacklem * Write vnode op from an mbuf list. 670191783Srmacklem */ 671191783Srmacklemint 672191783Srmacklemnfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable, 673191783Srmacklem struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 674191783Srmacklem{ 675191783Srmacklem struct iovec *ivp; 676191783Srmacklem int i, len; 677191783Srmacklem struct iovec *iv; 678191783Srmacklem int ioflags, error; 679191783Srmacklem struct uio io, *uiop = &io; 680191783Srmacklem 681191783Srmacklem MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP, 682191783Srmacklem M_WAITOK); 683191783Srmacklem uiop->uio_iov = iv = ivp; 684191783Srmacklem uiop->uio_iovcnt = cnt; 685191783Srmacklem i = mtod(mp, caddr_t) + mp->m_len - cp; 686191783Srmacklem len = retlen; 687191783Srmacklem while (len > 0) { 688191783Srmacklem if (mp == NULL) 689191783Srmacklem panic("nfsvno_write"); 690191783Srmacklem if (i > 0) { 691191783Srmacklem i = min(i, len); 692191783Srmacklem ivp->iov_base = cp; 693191783Srmacklem ivp->iov_len = i; 694191783Srmacklem ivp++; 695191783Srmacklem len -= i; 696191783Srmacklem } 697191783Srmacklem mp = mp->m_next; 698191783Srmacklem if (mp) { 699191783Srmacklem i = mp->m_len; 700191783Srmacklem cp = mtod(mp, caddr_t); 701191783Srmacklem } 702191783Srmacklem } 703191783Srmacklem 704191783Srmacklem if (stable == NFSWRITE_UNSTABLE) 705191783Srmacklem ioflags = IO_NODELOCKED; 706191783Srmacklem else 707191783Srmacklem ioflags = (IO_SYNC | IO_NODELOCKED); 708191783Srmacklem uiop->uio_resid = retlen; 709191783Srmacklem uiop->uio_rw = UIO_WRITE; 710191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 711191783Srmacklem NFSUIOPROC(uiop, p); 712191783Srmacklem uiop->uio_offset = off; 713191783Srmacklem error = VOP_WRITE(vp, uiop, ioflags, cred); 714191783Srmacklem FREE((caddr_t)iv, M_TEMP); 715191783Srmacklem return (error); 716191783Srmacklem} 717191783Srmacklem 718191783Srmacklem/* 719191783Srmacklem * Common code for creating a regular file (plus special files for V2). 720191783Srmacklem */ 721191783Srmacklemint 722191783Srmacklemnfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 723191783Srmacklem struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 724199616Srmacklem int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp) 725191783Srmacklem{ 726191783Srmacklem u_quad_t tempsize; 727191783Srmacklem int error; 728191783Srmacklem 729191783Srmacklem error = nd->nd_repstat; 730191783Srmacklem if (!error && ndp->ni_vp == NULL) { 731191783Srmacklem if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 732191783Srmacklem vrele(ndp->ni_startdir); 733191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, 734191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 735191783Srmacklem vput(ndp->ni_dvp); 736191783Srmacklem nfsvno_relpathbuf(ndp); 737191783Srmacklem if (!error) { 738191783Srmacklem if (*exclusive_flagp) { 739191783Srmacklem *exclusive_flagp = 0; 740191783Srmacklem NFSVNO_ATTRINIT(nvap); 741199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 742199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 743191783Srmacklem error = VOP_SETATTR(ndp->ni_vp, 744191783Srmacklem &nvap->na_vattr, nd->nd_cred); 745191783Srmacklem } 746191783Srmacklem } 747191783Srmacklem /* 748191783Srmacklem * NFS V2 Only. nfsrvd_mknod() does this for V3. 749191783Srmacklem * (This implies, just get out on an error.) 750191783Srmacklem */ 751191783Srmacklem } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 752191783Srmacklem nvap->na_type == VFIFO) { 753191783Srmacklem if (nvap->na_type == VCHR && rdev == 0xffffffff) 754191783Srmacklem nvap->na_type = VFIFO; 755191783Srmacklem if (nvap->na_type != VFIFO && 756191783Srmacklem (error = priv_check_cred(nd->nd_cred, 757191783Srmacklem PRIV_VFS_MKNOD_DEV, 0))) { 758191783Srmacklem vrele(ndp->ni_startdir); 759191783Srmacklem nfsvno_relpathbuf(ndp); 760191783Srmacklem vput(ndp->ni_dvp); 761191783Srmacklem return (error); 762191783Srmacklem } 763191783Srmacklem nvap->na_rdev = rdev; 764191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 765191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 766191783Srmacklem vput(ndp->ni_dvp); 767191783Srmacklem nfsvno_relpathbuf(ndp); 768220546Srmacklem vrele(ndp->ni_startdir); 769220546Srmacklem if (error) 770191783Srmacklem return (error); 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{ 1283221517Srmacklem int error; 1284191783Srmacklem 1285221517Srmacklem error = VFS_STATFS(vp->v_mount, sf); 1286221517Srmacklem if (error == 0) { 1287221517Srmacklem /* 1288221517Srmacklem * Since NFS handles these values as unsigned on the 1289221517Srmacklem * wire, there is no way to represent negative values, 1290221517Srmacklem * so set them to 0. Without this, they will appear 1291221517Srmacklem * to be very large positive values for clients like 1292221517Srmacklem * Solaris10. 1293221517Srmacklem */ 1294221517Srmacklem if (sf->f_bavail < 0) 1295221517Srmacklem sf->f_bavail = 0; 1296221517Srmacklem if (sf->f_ffree < 0) 1297221517Srmacklem sf->f_ffree = 0; 1298221517Srmacklem } 1299221517Srmacklem return (error); 1300191783Srmacklem} 1301191783Srmacklem 1302191783Srmacklem/* 1303191783Srmacklem * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1304191783Srmacklem * must handle nfsrv_opencheck() calls after any other access checks. 1305191783Srmacklem */ 1306191783Srmacklemvoid 1307191783Srmacklemnfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1308191783Srmacklem nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1309199616Srmacklem int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, 1310191783Srmacklem NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p, 1311191783Srmacklem struct nfsexstuff *exp, struct vnode **vpp) 1312191783Srmacklem{ 1313191783Srmacklem struct vnode *vp = NULL; 1314191783Srmacklem u_quad_t tempsize; 1315191783Srmacklem struct nfsexstuff nes; 1316191783Srmacklem 1317191783Srmacklem if (ndp->ni_vp == NULL) 1318191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1319191783Srmacklem stateidp, stp, NULL, nd, p, nd->nd_repstat); 1320191783Srmacklem if (!nd->nd_repstat) { 1321191783Srmacklem if (ndp->ni_vp == NULL) { 1322191783Srmacklem vrele(ndp->ni_startdir); 1323191783Srmacklem nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1324191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1325191783Srmacklem vput(ndp->ni_dvp); 1326191783Srmacklem nfsvno_relpathbuf(ndp); 1327191783Srmacklem if (!nd->nd_repstat) { 1328191783Srmacklem if (*exclusive_flagp) { 1329191783Srmacklem *exclusive_flagp = 0; 1330191783Srmacklem NFSVNO_ATTRINIT(nvap); 1331199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 1332199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 1333191783Srmacklem nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1334191783Srmacklem &nvap->na_vattr, cred); 1335191783Srmacklem } else { 1336191783Srmacklem nfsrv_fixattr(nd, ndp->ni_vp, nvap, 1337191783Srmacklem aclp, p, attrbitp, exp); 1338191783Srmacklem } 1339191783Srmacklem } 1340191783Srmacklem vp = ndp->ni_vp; 1341191783Srmacklem } else { 1342191783Srmacklem if (ndp->ni_startdir) 1343191783Srmacklem vrele(ndp->ni_startdir); 1344191783Srmacklem nfsvno_relpathbuf(ndp); 1345191783Srmacklem vp = ndp->ni_vp; 1346191783Srmacklem if (create == NFSV4OPEN_CREATE) { 1347191783Srmacklem if (ndp->ni_dvp == vp) 1348191783Srmacklem vrele(ndp->ni_dvp); 1349191783Srmacklem else 1350191783Srmacklem vput(ndp->ni_dvp); 1351191783Srmacklem } 1352191783Srmacklem if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 1353191783Srmacklem if (ndp->ni_cnd.cn_flags & RDONLY) 1354191783Srmacklem NFSVNO_SETEXRDONLY(&nes); 1355191783Srmacklem else 1356191783Srmacklem NFSVNO_EXINIT(&nes); 1357191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, 1358200999Srmacklem VWRITE, cred, &nes, p, 1359200999Srmacklem NFSACCCHK_NOOVERRIDE, 1360200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1361191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1362191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1363191783Srmacklem if (!nd->nd_repstat) { 1364191783Srmacklem tempsize = nvap->na_size; 1365191783Srmacklem NFSVNO_ATTRINIT(nvap); 1366191783Srmacklem nvap->na_size = tempsize; 1367191783Srmacklem nd->nd_repstat = VOP_SETATTR(vp, 1368191783Srmacklem &nvap->na_vattr, cred); 1369191783Srmacklem } 1370191783Srmacklem } else if (vp->v_type == VREG) { 1371191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1372191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1373191783Srmacklem } 1374191783Srmacklem } 1375191783Srmacklem } else { 1376191783Srmacklem if (ndp->ni_cnd.cn_flags & HASBUF) 1377191783Srmacklem nfsvno_relpathbuf(ndp); 1378191783Srmacklem if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) { 1379191783Srmacklem vrele(ndp->ni_startdir); 1380191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1381191783Srmacklem vrele(ndp->ni_dvp); 1382191783Srmacklem else 1383191783Srmacklem vput(ndp->ni_dvp); 1384191783Srmacklem if (ndp->ni_vp) 1385191783Srmacklem vput(ndp->ni_vp); 1386191783Srmacklem } 1387191783Srmacklem } 1388191783Srmacklem *vpp = vp; 1389191783Srmacklem} 1390191783Srmacklem 1391191783Srmacklem/* 1392191783Srmacklem * Updates the file rev and sets the mtime and ctime 1393191783Srmacklem * to the current clock time, returning the va_filerev and va_Xtime 1394191783Srmacklem * values. 1395191783Srmacklem */ 1396191783Srmacklemvoid 1397191783Srmacklemnfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 1398191783Srmacklem struct ucred *cred, struct thread *p) 1399191783Srmacklem{ 1400191783Srmacklem struct vattr va; 1401191783Srmacklem 1402191783Srmacklem VATTR_NULL(&va); 1403191783Srmacklem getnanotime(&va.va_mtime); 1404191783Srmacklem (void) VOP_SETATTR(vp, &va, cred); 1405216693Srmacklem (void) nfsvno_getattr(vp, nvap, cred, p, 1); 1406191783Srmacklem} 1407191783Srmacklem 1408191783Srmacklem/* 1409191783Srmacklem * Glue routine to nfsv4_fillattr(). 1410191783Srmacklem */ 1411191783Srmacklemint 1412220645Srmacklemnfsvno_fillattr(struct nfsrv_descript *nd, struct mount *mp, struct vnode *vp, 1413191783Srmacklem struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 1414220648Srmacklem struct ucred *cred, struct thread *p, int isdgram, int reterr, 1415220648Srmacklem int supports_nfsv4acls, int at_root, uint64_t mounted_on_fileno) 1416191783Srmacklem{ 1417191783Srmacklem int error; 1418191783Srmacklem 1419220645Srmacklem error = nfsv4_fillattr(nd, mp, vp, NULL, &nvap->na_vattr, fhp, rderror, 1420220648Srmacklem attrbitp, cred, p, isdgram, reterr, supports_nfsv4acls, at_root, 1421220648Srmacklem mounted_on_fileno); 1422191783Srmacklem return (error); 1423191783Srmacklem} 1424191783Srmacklem 1425191783Srmacklem/* Since the Readdir vnode ops vary, put the entire functions in here. */ 1426191783Srmacklem/* 1427191783Srmacklem * nfs readdir service 1428191783Srmacklem * - mallocs what it thinks is enough to read 1429191783Srmacklem * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 1430206170Srmacklem * - calls VOP_READDIR() 1431191783Srmacklem * - loops around building the reply 1432191783Srmacklem * if the output generated exceeds count break out of loop 1433191783Srmacklem * The NFSM_CLGET macro is used here so that the reply will be packed 1434191783Srmacklem * tightly in mbuf clusters. 1435191783Srmacklem * - it trims out records with d_fileno == 0 1436191783Srmacklem * this doesn't matter for Unix clients, but they might confuse clients 1437191783Srmacklem * for other os'. 1438191783Srmacklem * - it trims out records with d_type == DT_WHT 1439191783Srmacklem * these cannot be seen through NFS (unless we extend the protocol) 1440191783Srmacklem * The alternate call nfsrvd_readdirplus() does lookups as well. 1441191783Srmacklem * PS: The NFS protocol spec. does not clarify what the "count" byte 1442191783Srmacklem * argument is a count of.. just name strings and file id's or the 1443191783Srmacklem * entire reply rpc or ... 1444191783Srmacklem * I tried just file name and id sizes and it confused the Sun client, 1445191783Srmacklem * so I am using the full rpc size now. The "paranoia.." comment refers 1446191783Srmacklem * to including the status longwords that are not a part of the dir. 1447191783Srmacklem * "entry" structures, but are in the rpc. 1448191783Srmacklem */ 1449191783Srmacklemint 1450191783Srmacklemnfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 1451191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1452191783Srmacklem{ 1453191783Srmacklem struct dirent *dp; 1454191783Srmacklem u_int32_t *tl; 1455191783Srmacklem int dirlen; 1456191783Srmacklem char *cpos, *cend, *rbuf; 1457191783Srmacklem struct nfsvattr at; 1458191783Srmacklem int nlen, error = 0, getret = 1; 1459191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies; 1460191783Srmacklem u_int64_t off, toff, verf; 1461191783Srmacklem u_long *cookies = NULL, *cookiep; 1462191783Srmacklem struct uio io; 1463191783Srmacklem struct iovec iv; 1464216691Srmacklem int not_zfs; 1465191783Srmacklem 1466191783Srmacklem if (nd->nd_repstat) { 1467191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1468191783Srmacklem return (0); 1469191783Srmacklem } 1470191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1471191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1472191783Srmacklem off = fxdr_unsigned(u_quad_t, *tl++); 1473191783Srmacklem } else { 1474191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1475191783Srmacklem off = fxdr_hyper(tl); 1476191783Srmacklem tl += 2; 1477191783Srmacklem verf = fxdr_hyper(tl); 1478191783Srmacklem tl += 2; 1479191783Srmacklem } 1480191783Srmacklem toff = off; 1481191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1482206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1483191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1484191783Srmacklem siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1485191783Srmacklem fullsiz = siz; 1486191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1487191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, 1488216693Srmacklem p, 1); 1489191783Srmacklem#if 0 1490191783Srmacklem /* 1491191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1492191783Srmacklem * since it is not supposed to change when entries are 1493191783Srmacklem * removed/added unless that offset cookies returned to 1494191783Srmacklem * the client are no longer valid. 1495191783Srmacklem */ 1496191783Srmacklem if (!nd->nd_repstat && toff && verf != at.na_filerev) 1497191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1498191783Srmacklem#endif 1499191783Srmacklem } 1500206170Srmacklem if (nd->nd_repstat == 0 && cnt == 0) { 1501206170Srmacklem if (nd->nd_flag & ND_NFSV2) 1502206170Srmacklem /* NFSv2 does not have NFSERR_TOOSMALL */ 1503206170Srmacklem nd->nd_repstat = EPERM; 1504206170Srmacklem else 1505206170Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1506206170Srmacklem } 1507191783Srmacklem if (!nd->nd_repstat) 1508200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1509191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1510200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1511191783Srmacklem if (nd->nd_repstat) { 1512191783Srmacklem vput(vp); 1513191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1514191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1515191783Srmacklem return (0); 1516191783Srmacklem } 1517216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1518191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1519191783Srmacklemagain: 1520191783Srmacklem eofflag = 0; 1521191783Srmacklem if (cookies) { 1522191783Srmacklem free((caddr_t)cookies, M_TEMP); 1523191783Srmacklem cookies = NULL; 1524191783Srmacklem } 1525191783Srmacklem 1526191783Srmacklem iv.iov_base = rbuf; 1527191783Srmacklem iv.iov_len = siz; 1528191783Srmacklem io.uio_iov = &iv; 1529191783Srmacklem io.uio_iovcnt = 1; 1530191783Srmacklem io.uio_offset = (off_t)off; 1531191783Srmacklem io.uio_resid = siz; 1532191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1533191783Srmacklem io.uio_rw = UIO_READ; 1534191783Srmacklem io.uio_td = NULL; 1535191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1536191783Srmacklem &cookies); 1537191783Srmacklem off = (u_int64_t)io.uio_offset; 1538191783Srmacklem if (io.uio_resid) 1539191783Srmacklem siz -= io.uio_resid; 1540191783Srmacklem 1541191783Srmacklem if (!cookies && !nd->nd_repstat) 1542191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1543191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1544216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1545191783Srmacklem if (!nd->nd_repstat) 1546191783Srmacklem nd->nd_repstat = getret; 1547191783Srmacklem } 1548191783Srmacklem 1549191783Srmacklem /* 1550191783Srmacklem * Handles the failed cases. nd->nd_repstat == 0 past here. 1551191783Srmacklem */ 1552191783Srmacklem if (nd->nd_repstat) { 1553216692Srmacklem vput(vp); 1554191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1555191783Srmacklem if (cookies) 1556191783Srmacklem free((caddr_t)cookies, M_TEMP); 1557191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1558191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1559191783Srmacklem return (0); 1560191783Srmacklem } 1561191783Srmacklem /* 1562191783Srmacklem * If nothing read, return eof 1563191783Srmacklem * rpc reply 1564191783Srmacklem */ 1565191783Srmacklem if (siz == 0) { 1566216692Srmacklem vput(vp); 1567191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1568191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1569191783Srmacklem } else { 1570191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1571191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1572191783Srmacklem txdr_hyper(at.na_filerev, tl); 1573191783Srmacklem tl += 2; 1574191783Srmacklem } 1575191783Srmacklem *tl++ = newnfs_false; 1576191783Srmacklem *tl = newnfs_true; 1577191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1578191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1579191783Srmacklem return (0); 1580191783Srmacklem } 1581191783Srmacklem 1582191783Srmacklem /* 1583191783Srmacklem * Check for degenerate cases of nothing useful read. 1584191783Srmacklem * If so go try again 1585191783Srmacklem */ 1586191783Srmacklem cpos = rbuf; 1587191783Srmacklem cend = rbuf + siz; 1588191783Srmacklem dp = (struct dirent *)cpos; 1589191783Srmacklem cookiep = cookies; 1590191783Srmacklem 1591191783Srmacklem /* 1592191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1593191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1594191783Srmacklem * skip over the records that precede the requested offset. This 1595191783Srmacklem * requires the assumption that file offset cookies monotonically 1596191783Srmacklem * increase. 1597216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1598216691Srmacklem * this is not done when ZFS is the file system. 1599191783Srmacklem */ 1600191783Srmacklem while (cpos < cend && ncookies > 0 && 1601191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1602216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff))) { 1603191783Srmacklem cpos += dp->d_reclen; 1604191783Srmacklem dp = (struct dirent *)cpos; 1605191783Srmacklem cookiep++; 1606191783Srmacklem ncookies--; 1607191783Srmacklem } 1608191783Srmacklem if (cpos >= cend || ncookies == 0) { 1609191783Srmacklem siz = fullsiz; 1610191783Srmacklem toff = off; 1611191783Srmacklem goto again; 1612191783Srmacklem } 1613216692Srmacklem vput(vp); 1614191783Srmacklem 1615191783Srmacklem /* 1616191783Srmacklem * dirlen is the size of the reply, including all XDR and must 1617191783Srmacklem * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 1618191783Srmacklem * if the XDR should be included in "count", but to be safe, we do. 1619191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now.) 1620191783Srmacklem */ 1621191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1622191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1623191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1624191783Srmacklem txdr_hyper(at.na_filerev, tl); 1625191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1626191783Srmacklem } else { 1627191783Srmacklem dirlen = 2 * NFSX_UNSIGNED; 1628191783Srmacklem } 1629191783Srmacklem 1630191783Srmacklem /* Loop through the records and build reply */ 1631191783Srmacklem while (cpos < cend && ncookies > 0) { 1632191783Srmacklem nlen = dp->d_namlen; 1633191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1634191783Srmacklem nlen <= NFS_MAXNAMLEN) { 1635191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1636191783Srmacklem dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1637191783Srmacklem else 1638191783Srmacklem dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1639191783Srmacklem if (dirlen > cnt) { 1640191783Srmacklem eofflag = 0; 1641191783Srmacklem break; 1642191783Srmacklem } 1643191783Srmacklem 1644191783Srmacklem /* 1645191783Srmacklem * Build the directory record xdr from 1646191783Srmacklem * the dirent entry. 1647191783Srmacklem */ 1648191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1649191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1650191783Srmacklem *tl++ = newnfs_true; 1651191783Srmacklem *tl++ = 0; 1652191783Srmacklem } else { 1653191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1654191783Srmacklem *tl++ = newnfs_true; 1655191783Srmacklem } 1656191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1657191783Srmacklem (void) nfsm_strtom(nd, dp->d_name, nlen); 1658191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1659191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1660191783Srmacklem *tl++ = 0; 1661191783Srmacklem } else 1662191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1663191783Srmacklem *tl = txdr_unsigned(*cookiep); 1664191783Srmacklem } 1665191783Srmacklem cpos += dp->d_reclen; 1666191783Srmacklem dp = (struct dirent *)cpos; 1667191783Srmacklem cookiep++; 1668191783Srmacklem ncookies--; 1669191783Srmacklem } 1670191783Srmacklem if (cpos < cend) 1671191783Srmacklem eofflag = 0; 1672191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1673191783Srmacklem *tl++ = newnfs_false; 1674191783Srmacklem if (eofflag) 1675191783Srmacklem *tl = newnfs_true; 1676191783Srmacklem else 1677191783Srmacklem *tl = newnfs_false; 1678191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1679191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1680191783Srmacklem return (0); 1681191783Srmacklemnfsmout: 1682191783Srmacklem vput(vp); 1683191783Srmacklem return (error); 1684191783Srmacklem} 1685191783Srmacklem 1686191783Srmacklem/* 1687191783Srmacklem * Readdirplus for V3 and Readdir for V4. 1688191783Srmacklem */ 1689191783Srmacklemint 1690191783Srmacklemnfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 1691191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1692191783Srmacklem{ 1693191783Srmacklem struct dirent *dp; 1694191783Srmacklem u_int32_t *tl; 1695191783Srmacklem int dirlen; 1696191783Srmacklem char *cpos, *cend, *rbuf; 1697191783Srmacklem struct vnode *nvp; 1698191783Srmacklem fhandle_t nfh; 1699191783Srmacklem struct nfsvattr nva, at, *nvap = &nva; 1700191783Srmacklem struct mbuf *mb0, *mb1; 1701191783Srmacklem struct nfsreferral *refp; 1702199715Srmacklem int nlen, r, error = 0, getret = 1, usevget = 1; 1703191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 1704191783Srmacklem caddr_t bpos0, bpos1; 1705191783Srmacklem u_int64_t off, toff, verf; 1706191783Srmacklem u_long *cookies = NULL, *cookiep; 1707191783Srmacklem nfsattrbit_t attrbits, rderrbits, savbits; 1708191783Srmacklem struct uio io; 1709191783Srmacklem struct iovec iv; 1710199715Srmacklem struct componentname cn; 1711220648Srmacklem int at_root, needs_unbusy, not_zfs, supports_nfsv4acls; 1712220645Srmacklem struct mount *mp, *new_mp; 1713220645Srmacklem uint64_t mounted_on_fileno; 1714191783Srmacklem 1715191783Srmacklem if (nd->nd_repstat) { 1716191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1717191783Srmacklem return (0); 1718191783Srmacklem } 1719191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 1720191783Srmacklem off = fxdr_hyper(tl); 1721191783Srmacklem toff = off; 1722191783Srmacklem tl += 2; 1723191783Srmacklem verf = fxdr_hyper(tl); 1724191783Srmacklem tl += 2; 1725191783Srmacklem siz = fxdr_unsigned(int, *tl++); 1726191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1727191783Srmacklem 1728191783Srmacklem /* 1729191783Srmacklem * Use the server's maximum data transfer size as the upper bound 1730191783Srmacklem * on reply datalen. 1731191783Srmacklem */ 1732206170Srmacklem if (cnt > NFS_SRVMAXDATA(nd) || cnt < 0) 1733191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1734191783Srmacklem 1735191783Srmacklem /* 1736191783Srmacklem * siz is a "hint" of how much directory information (name, fileid, 1737191783Srmacklem * cookie) should be in the reply. At least one client "hints" 0, 1738191783Srmacklem * so I set it to cnt for that case. I also round it up to the 1739191783Srmacklem * next multiple of DIRBLKSIZ. 1740191783Srmacklem */ 1741206170Srmacklem if (siz <= 0) 1742191783Srmacklem siz = cnt; 1743191783Srmacklem siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1744191783Srmacklem 1745191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1746191783Srmacklem error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1747191783Srmacklem if (error) 1748191783Srmacklem goto nfsmout; 1749191783Srmacklem NFSSET_ATTRBIT(&savbits, &attrbits); 1750191783Srmacklem NFSCLRNOTFILLABLE_ATTRBIT(&attrbits); 1751191783Srmacklem NFSZERO_ATTRBIT(&rderrbits); 1752191783Srmacklem NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 1753191783Srmacklem } else { 1754191783Srmacklem NFSZERO_ATTRBIT(&attrbits); 1755191783Srmacklem } 1756191783Srmacklem fullsiz = siz; 1757216693Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1758191783Srmacklem if (!nd->nd_repstat) { 1759191783Srmacklem if (off && verf != at.na_filerev) { 1760191783Srmacklem /* 1761191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1762191783Srmacklem * since it is not supposed to change when entries are 1763191783Srmacklem * removed/added unless that offset cookies returned to 1764191783Srmacklem * the client are no longer valid. 1765191783Srmacklem */ 1766191783Srmacklem#if 0 1767191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1768191783Srmacklem nd->nd_repstat = NFSERR_NOTSAME; 1769191783Srmacklem } else { 1770191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1771191783Srmacklem } 1772191783Srmacklem#endif 1773191783Srmacklem } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) { 1774191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1775191783Srmacklem } 1776191783Srmacklem } 1777191783Srmacklem if (!nd->nd_repstat && vp->v_type != VDIR) 1778191783Srmacklem nd->nd_repstat = NFSERR_NOTDIR; 1779191783Srmacklem if (!nd->nd_repstat && cnt == 0) 1780191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1781191783Srmacklem if (!nd->nd_repstat) 1782200999Srmacklem nd->nd_repstat = nfsvno_accchk(vp, VEXEC, 1783191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1784200999Srmacklem NFSACCCHK_VPISLOCKED, NULL); 1785191783Srmacklem if (nd->nd_repstat) { 1786191783Srmacklem vput(vp); 1787191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1788191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1789191783Srmacklem return (0); 1790191783Srmacklem } 1791216691Srmacklem not_zfs = strcmp(vp->v_mount->mnt_vfc->vfc_name, "zfs"); 1792191783Srmacklem 1793191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1794191783Srmacklemagain: 1795191783Srmacklem eofflag = 0; 1796191783Srmacklem if (cookies) { 1797191783Srmacklem free((caddr_t)cookies, M_TEMP); 1798191783Srmacklem cookies = NULL; 1799191783Srmacklem } 1800191783Srmacklem 1801191783Srmacklem iv.iov_base = rbuf; 1802191783Srmacklem iv.iov_len = siz; 1803191783Srmacklem io.uio_iov = &iv; 1804191783Srmacklem io.uio_iovcnt = 1; 1805191783Srmacklem io.uio_offset = (off_t)off; 1806191783Srmacklem io.uio_resid = siz; 1807191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1808191783Srmacklem io.uio_rw = UIO_READ; 1809191783Srmacklem io.uio_td = NULL; 1810191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1811191783Srmacklem &cookies); 1812191783Srmacklem off = (u_int64_t)io.uio_offset; 1813191783Srmacklem if (io.uio_resid) 1814191783Srmacklem siz -= io.uio_resid; 1815191783Srmacklem 1816216693Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p, 1); 1817191783Srmacklem 1818191783Srmacklem if (!cookies && !nd->nd_repstat) 1819191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1820191783Srmacklem if (!nd->nd_repstat) 1821191783Srmacklem nd->nd_repstat = getret; 1822191783Srmacklem if (nd->nd_repstat) { 1823199715Srmacklem vput(vp); 1824191783Srmacklem if (cookies) 1825191783Srmacklem free((caddr_t)cookies, M_TEMP); 1826191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1827191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1828191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1829191783Srmacklem return (0); 1830191783Srmacklem } 1831191783Srmacklem /* 1832191783Srmacklem * If nothing read, return eof 1833191783Srmacklem * rpc reply 1834191783Srmacklem */ 1835191783Srmacklem if (siz == 0) { 1836199715Srmacklem vput(vp); 1837191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1838191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1839191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1840191783Srmacklem txdr_hyper(at.na_filerev, tl); 1841191783Srmacklem tl += 2; 1842191783Srmacklem *tl++ = newnfs_false; 1843191783Srmacklem *tl = newnfs_true; 1844191783Srmacklem free((caddr_t)cookies, M_TEMP); 1845191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1846191783Srmacklem return (0); 1847191783Srmacklem } 1848191783Srmacklem 1849191783Srmacklem /* 1850191783Srmacklem * Check for degenerate cases of nothing useful read. 1851191783Srmacklem * If so go try again 1852191783Srmacklem */ 1853191783Srmacklem cpos = rbuf; 1854191783Srmacklem cend = rbuf + siz; 1855191783Srmacklem dp = (struct dirent *)cpos; 1856191783Srmacklem cookiep = cookies; 1857191783Srmacklem 1858191783Srmacklem /* 1859191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1860191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1861191783Srmacklem * skip over the records that precede the requested offset. This 1862191783Srmacklem * requires the assumption that file offset cookies monotonically 1863191783Srmacklem * increase. 1864216691Srmacklem * Since the offset cookies don't monotonically increase for ZFS, 1865216691Srmacklem * this is not done when ZFS is the file system. 1866191783Srmacklem */ 1867191783Srmacklem while (cpos < cend && ncookies > 0 && 1868191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1869216691Srmacklem (not_zfs != 0 && ((u_quad_t)(*cookiep)) <= toff) || 1870191783Srmacklem ((nd->nd_flag & ND_NFSV4) && 1871191783Srmacklem ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 1872191783Srmacklem (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 1873191783Srmacklem cpos += dp->d_reclen; 1874191783Srmacklem dp = (struct dirent *)cpos; 1875191783Srmacklem cookiep++; 1876191783Srmacklem ncookies--; 1877191783Srmacklem } 1878191783Srmacklem if (cpos >= cend || ncookies == 0) { 1879191783Srmacklem siz = fullsiz; 1880191783Srmacklem toff = off; 1881191783Srmacklem goto again; 1882191783Srmacklem } 1883217176Srmacklem 1884217176Srmacklem /* 1885217176Srmacklem * Busy the file system so that the mount point won't go away 1886217176Srmacklem * and, as such, VFS_VGET() can be used safely. 1887217176Srmacklem */ 1888217176Srmacklem mp = vp->v_mount; 1889217176Srmacklem vfs_ref(mp); 1890216692Srmacklem VOP_UNLOCK(vp, 0); 1891217176Srmacklem nd->nd_repstat = vfs_busy(mp, 0); 1892217176Srmacklem vfs_rel(mp); 1893217176Srmacklem if (nd->nd_repstat != 0) { 1894217176Srmacklem vrele(vp); 1895217176Srmacklem free(cookies, M_TEMP); 1896217176Srmacklem free(rbuf, M_TEMP); 1897217176Srmacklem if (nd->nd_flag & ND_NFSV3) 1898217176Srmacklem nfsrv_postopattr(nd, getret, &at); 1899217176Srmacklem return (0); 1900217176Srmacklem } 1901191783Srmacklem 1902191783Srmacklem /* 1903191783Srmacklem * Save this position, in case there is an error before one entry 1904191783Srmacklem * is created. 1905191783Srmacklem */ 1906191783Srmacklem mb0 = nd->nd_mb; 1907191783Srmacklem bpos0 = nd->nd_bpos; 1908191783Srmacklem 1909191783Srmacklem /* 1910191783Srmacklem * Fill in the first part of the reply. 1911191783Srmacklem * dirlen is the reply length in bytes and cannot exceed cnt. 1912191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now, 1913191783Srmacklem * so we recognize when we have exceeded cnt.) 1914191783Srmacklem */ 1915191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1916191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1917191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1918191783Srmacklem } else { 1919191783Srmacklem dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 1920191783Srmacklem } 1921191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1922191783Srmacklem txdr_hyper(at.na_filerev, tl); 1923191783Srmacklem 1924191783Srmacklem /* 1925191783Srmacklem * Save this position, in case there is an empty reply needed. 1926191783Srmacklem */ 1927191783Srmacklem mb1 = nd->nd_mb; 1928191783Srmacklem bpos1 = nd->nd_bpos; 1929191783Srmacklem 1930191783Srmacklem /* Loop through the records and build reply */ 1931191783Srmacklem entrycnt = 0; 1932191783Srmacklem while (cpos < cend && ncookies > 0 && dirlen < cnt) { 1933191783Srmacklem nlen = dp->d_namlen; 1934191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1935191783Srmacklem nlen <= NFS_MAXNAMLEN && 1936191783Srmacklem ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 1937191783Srmacklem (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 1938191783Srmacklem || (nlen == 1 && dp->d_name[0] != '.'))) { 1939191783Srmacklem /* 1940191783Srmacklem * Save the current position in the reply, in case 1941191783Srmacklem * this entry exceeds cnt. 1942191783Srmacklem */ 1943191783Srmacklem mb1 = nd->nd_mb; 1944191783Srmacklem bpos1 = nd->nd_bpos; 1945191783Srmacklem 1946191783Srmacklem /* 1947191783Srmacklem * For readdir_and_lookup get the vnode using 1948191783Srmacklem * the file number. 1949191783Srmacklem */ 1950191783Srmacklem nvp = NULL; 1951191783Srmacklem refp = NULL; 1952191783Srmacklem r = 0; 1953220645Srmacklem at_root = 0; 1954220645Srmacklem needs_unbusy = 0; 1955220645Srmacklem new_mp = mp; 1956220645Srmacklem mounted_on_fileno = (uint64_t)dp->d_fileno; 1957191783Srmacklem if ((nd->nd_flag & ND_NFSV3) || 1958191783Srmacklem NFSNONZERO_ATTRBIT(&savbits)) { 1959191783Srmacklem if (nd->nd_flag & ND_NFSV4) 1960191783Srmacklem refp = nfsv4root_getreferral(NULL, 1961191783Srmacklem vp, dp->d_fileno); 1962199715Srmacklem if (refp == NULL) { 1963199715Srmacklem if (usevget) 1964217176Srmacklem r = VFS_VGET(mp, dp->d_fileno, 1965217176Srmacklem LK_SHARED, &nvp); 1966199715Srmacklem else 1967199715Srmacklem r = EOPNOTSUPP; 1968199715Srmacklem if (r == EOPNOTSUPP) { 1969199715Srmacklem if (usevget) { 1970199715Srmacklem usevget = 0; 1971199715Srmacklem cn.cn_nameiop = LOOKUP; 1972199715Srmacklem cn.cn_lkflags = 1973216700Srmacklem LK_SHARED | 1974199715Srmacklem LK_RETRY; 1975199715Srmacklem cn.cn_cred = 1976199715Srmacklem nd->nd_cred; 1977199715Srmacklem cn.cn_thread = p; 1978199715Srmacklem } 1979199715Srmacklem cn.cn_nameptr = dp->d_name; 1980199715Srmacklem cn.cn_namelen = nlen; 1981199715Srmacklem cn.cn_flags = ISLASTCN | 1982199715Srmacklem NOFOLLOW | LOCKLEAF | 1983199715Srmacklem MPSAFE; 1984199715Srmacklem if (nlen == 2 && 1985199715Srmacklem dp->d_name[0] == '.' && 1986199715Srmacklem dp->d_name[1] == '.') 1987199715Srmacklem cn.cn_flags |= 1988199715Srmacklem ISDOTDOT; 1989216700Srmacklem if (vn_lock(vp, LK_SHARED) 1990216692Srmacklem != 0) { 1991216692Srmacklem nd->nd_repstat = EPERM; 1992216692Srmacklem break; 1993216692Srmacklem } 1994214149Srmacklem if ((vp->v_vflag & VV_ROOT) != 0 1995214149Srmacklem && (cn.cn_flags & ISDOTDOT) 1996214149Srmacklem != 0) { 1997214149Srmacklem vref(vp); 1998214149Srmacklem nvp = vp; 1999214149Srmacklem r = 0; 2000220507Srmacklem } else { 2001214149Srmacklem r = VOP_LOOKUP(vp, &nvp, 2002214149Srmacklem &cn); 2003220507Srmacklem if (vp != nvp) 2004220507Srmacklem VOP_UNLOCK(vp, 2005220507Srmacklem 0); 2006220507Srmacklem } 2007199715Srmacklem } 2008220645Srmacklem 2009220645Srmacklem /* 2010220645Srmacklem * For NFSv4, check to see if nvp is 2011220645Srmacklem * a mount point and get the mount 2012220645Srmacklem * point vnode, as required. 2013220645Srmacklem */ 2014220645Srmacklem if (r == 0 && 2015220645Srmacklem nfsrv_enable_crossmntpt != 0 && 2016220645Srmacklem (nd->nd_flag & ND_NFSV4) != 0 && 2017220645Srmacklem nvp->v_type == VDIR && 2018220645Srmacklem nvp->v_mountedhere != NULL) { 2019220645Srmacklem new_mp = nvp->v_mountedhere; 2020220645Srmacklem r = vfs_busy(new_mp, 0); 2021220645Srmacklem vput(nvp); 2022220645Srmacklem nvp = NULL; 2023220645Srmacklem if (r == 0) { 2024220645Srmacklem r = VFS_ROOT(new_mp, 2025220645Srmacklem LK_SHARED, &nvp); 2026220645Srmacklem needs_unbusy = 1; 2027220645Srmacklem if (r == 0) 2028220645Srmacklem at_root = 1; 2029220645Srmacklem } 2030220645Srmacklem } 2031199715Srmacklem } 2032191783Srmacklem if (!r) { 2033191783Srmacklem if (refp == NULL && 2034191783Srmacklem ((nd->nd_flag & ND_NFSV3) || 2035191783Srmacklem NFSNONZERO_ATTRBIT(&attrbits))) { 2036191783Srmacklem r = nfsvno_getfh(nvp, &nfh, p); 2037191783Srmacklem if (!r) 2038191783Srmacklem r = nfsvno_getattr(nvp, nvap, 2039216693Srmacklem nd->nd_cred, p, 1); 2040191783Srmacklem } 2041191783Srmacklem } else { 2042191783Srmacklem nvp = NULL; 2043191783Srmacklem } 2044191783Srmacklem if (r) { 2045191783Srmacklem if (!NFSISSET_ATTRBIT(&attrbits, 2046191783Srmacklem NFSATTRBIT_RDATTRERROR)) { 2047191783Srmacklem if (nvp != NULL) 2048191783Srmacklem vput(nvp); 2049220645Srmacklem if (needs_unbusy != 0) 2050220645Srmacklem vfs_unbusy(new_mp); 2051191783Srmacklem nd->nd_repstat = r; 2052191783Srmacklem break; 2053191783Srmacklem } 2054191783Srmacklem } 2055191783Srmacklem } 2056191783Srmacklem 2057191783Srmacklem /* 2058191783Srmacklem * Build the directory record xdr 2059191783Srmacklem */ 2060191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 2061191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2062191783Srmacklem *tl++ = newnfs_true; 2063191783Srmacklem *tl++ = 0; 2064191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 2065191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2066191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2067191783Srmacklem *tl++ = 0; 2068191783Srmacklem *tl = txdr_unsigned(*cookiep); 2069191783Srmacklem nfsrv_postopattr(nd, 0, nvap); 2070191783Srmacklem dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1); 2071191783Srmacklem dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 2072191783Srmacklem if (nvp != NULL) 2073191783Srmacklem vput(nvp); 2074191783Srmacklem } else { 2075191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2076191783Srmacklem *tl++ = newnfs_true; 2077191783Srmacklem *tl++ = 0; 2078191783Srmacklem *tl = txdr_unsigned(*cookiep); 2079191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 2080220648Srmacklem if (nvp != NULL) { 2081220648Srmacklem supports_nfsv4acls = 2082220648Srmacklem nfs_supportsnfsv4acls(nvp); 2083216692Srmacklem VOP_UNLOCK(nvp, 0); 2084220648Srmacklem } else 2085220648Srmacklem supports_nfsv4acls = 0; 2086191783Srmacklem if (refp != NULL) { 2087191783Srmacklem dirlen += nfsrv_putreferralattr(nd, 2088191783Srmacklem &savbits, refp, 0, 2089191783Srmacklem &nd->nd_repstat); 2090191783Srmacklem if (nd->nd_repstat) { 2091191783Srmacklem if (nvp != NULL) 2092191783Srmacklem vrele(nvp); 2093220645Srmacklem if (needs_unbusy != 0) 2094220645Srmacklem vfs_unbusy(new_mp); 2095191783Srmacklem break; 2096191783Srmacklem } 2097191783Srmacklem } else if (r) { 2098220645Srmacklem dirlen += nfsvno_fillattr(nd, new_mp, 2099220645Srmacklem nvp, nvap, &nfh, r, &rderrbits, 2100220648Srmacklem nd->nd_cred, p, isdgram, 0, 2101220648Srmacklem supports_nfsv4acls, at_root, 2102220645Srmacklem mounted_on_fileno); 2103191783Srmacklem } else { 2104220645Srmacklem dirlen += nfsvno_fillattr(nd, new_mp, 2105220645Srmacklem nvp, nvap, &nfh, r, &attrbits, 2106220648Srmacklem nd->nd_cred, p, isdgram, 0, 2107220648Srmacklem supports_nfsv4acls, at_root, 2108220645Srmacklem mounted_on_fileno); 2109191783Srmacklem } 2110191783Srmacklem if (nvp != NULL) 2111191783Srmacklem vrele(nvp); 2112191783Srmacklem dirlen += (3 * NFSX_UNSIGNED); 2113191783Srmacklem } 2114220645Srmacklem if (needs_unbusy != 0) 2115220645Srmacklem vfs_unbusy(new_mp); 2116191783Srmacklem if (dirlen <= cnt) 2117191783Srmacklem entrycnt++; 2118191783Srmacklem } 2119191783Srmacklem cpos += dp->d_reclen; 2120191783Srmacklem dp = (struct dirent *)cpos; 2121191783Srmacklem cookiep++; 2122191783Srmacklem ncookies--; 2123191783Srmacklem } 2124216692Srmacklem vrele(vp); 2125217176Srmacklem vfs_unbusy(mp); 2126191783Srmacklem 2127191783Srmacklem /* 2128191783Srmacklem * If dirlen > cnt, we must strip off the last entry. If that 2129191783Srmacklem * results in an empty reply, report NFSERR_TOOSMALL. 2130191783Srmacklem */ 2131191783Srmacklem if (dirlen > cnt || nd->nd_repstat) { 2132191783Srmacklem if (!nd->nd_repstat && entrycnt == 0) 2133191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 2134191783Srmacklem if (nd->nd_repstat) 2135191783Srmacklem newnfs_trimtrailing(nd, mb0, bpos0); 2136191783Srmacklem else 2137191783Srmacklem newnfs_trimtrailing(nd, mb1, bpos1); 2138191783Srmacklem eofflag = 0; 2139191783Srmacklem } else if (cpos < cend) 2140191783Srmacklem eofflag = 0; 2141191783Srmacklem if (!nd->nd_repstat) { 2142191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2143191783Srmacklem *tl++ = newnfs_false; 2144191783Srmacklem if (eofflag) 2145191783Srmacklem *tl = newnfs_true; 2146191783Srmacklem else 2147191783Srmacklem *tl = newnfs_false; 2148191783Srmacklem } 2149191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 2150191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 2151191783Srmacklem return (0); 2152191783Srmacklemnfsmout: 2153191783Srmacklem vput(vp); 2154191783Srmacklem return (error); 2155191783Srmacklem} 2156191783Srmacklem 2157191783Srmacklem/* 2158191783Srmacklem * Get the settable attributes out of the mbuf list. 2159191783Srmacklem * (Return 0 or EBADRPC) 2160191783Srmacklem */ 2161191783Srmacklemint 2162191783Srmacklemnfsrv_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2163191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2164191783Srmacklem{ 2165191783Srmacklem u_int32_t *tl; 2166191783Srmacklem struct nfsv2_sattr *sp; 2167191783Srmacklem struct timeval curtime; 2168191783Srmacklem int error = 0, toclient = 0; 2169191783Srmacklem 2170191783Srmacklem switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 2171191783Srmacklem case ND_NFSV2: 2172191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2173191783Srmacklem /* 2174191783Srmacklem * Some old clients didn't fill in the high order 16bits. 2175191783Srmacklem * --> check the low order 2 bytes for 0xffff 2176191783Srmacklem */ 2177191783Srmacklem if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 2178191783Srmacklem nvap->na_mode = nfstov_mode(sp->sa_mode); 2179191783Srmacklem if (sp->sa_uid != newnfs_xdrneg1) 2180191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 2181191783Srmacklem if (sp->sa_gid != newnfs_xdrneg1) 2182191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 2183191783Srmacklem if (sp->sa_size != newnfs_xdrneg1) 2184191783Srmacklem nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 2185191783Srmacklem if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 2186191783Srmacklem#ifdef notyet 2187191783Srmacklem fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 2188191783Srmacklem#else 2189191783Srmacklem nvap->na_atime.tv_sec = 2190191783Srmacklem fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 2191191783Srmacklem nvap->na_atime.tv_nsec = 0; 2192191783Srmacklem#endif 2193191783Srmacklem } 2194191783Srmacklem if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 2195191783Srmacklem fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 2196191783Srmacklem break; 2197191783Srmacklem case ND_NFSV3: 2198191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2199191783Srmacklem if (*tl == newnfs_true) { 2200191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2201191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2202191783Srmacklem } 2203191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2204191783Srmacklem if (*tl == newnfs_true) { 2205191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2206191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, *tl); 2207191783Srmacklem } 2208191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2209191783Srmacklem if (*tl == newnfs_true) { 2210191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2211191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, *tl); 2212191783Srmacklem } 2213191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2214191783Srmacklem if (*tl == newnfs_true) { 2215191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2216191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2217191783Srmacklem } 2218191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2219191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2220191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2221191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2222191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_atime); 2223191783Srmacklem toclient = 1; 2224191783Srmacklem break; 2225191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2226191783Srmacklem NFSGETTIME(&curtime); 2227191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2228191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2229191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2230191783Srmacklem break; 2231191783Srmacklem }; 2232191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2233191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2234191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2235191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2236191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_mtime); 2237191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2238191783Srmacklem break; 2239191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2240191783Srmacklem NFSGETTIME(&curtime); 2241191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2242191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2243191783Srmacklem if (!toclient) 2244191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2245191783Srmacklem break; 2246191783Srmacklem }; 2247191783Srmacklem break; 2248191783Srmacklem case ND_NFSV4: 2249191783Srmacklem error = nfsv4_sattr(nd, nvap, attrbitp, aclp, p); 2250191783Srmacklem }; 2251191783Srmacklemnfsmout: 2252191783Srmacklem return (error); 2253191783Srmacklem} 2254191783Srmacklem 2255191783Srmacklem/* 2256191783Srmacklem * Handle the setable attributes for V4. 2257191783Srmacklem * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 2258191783Srmacklem */ 2259191783Srmacklemint 2260191783Srmacklemnfsv4_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2261191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2262191783Srmacklem{ 2263191783Srmacklem u_int32_t *tl; 2264191783Srmacklem int attrsum = 0; 2265191783Srmacklem int i, j; 2266191783Srmacklem int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 2267191783Srmacklem int toclient = 0; 2268191783Srmacklem u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 2269191783Srmacklem uid_t uid; 2270191783Srmacklem gid_t gid; 2271191783Srmacklem struct timeval curtime; 2272191783Srmacklem 2273191783Srmacklem error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 2274191783Srmacklem if (error) 2275191783Srmacklem return (error); 2276191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2277191783Srmacklem attrsize = fxdr_unsigned(int, *tl); 2278191783Srmacklem 2279191783Srmacklem /* 2280191783Srmacklem * Loop around getting the setable attributes. If an unsupported 2281191783Srmacklem * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 2282191783Srmacklem */ 2283191783Srmacklem if (retnotsup) { 2284191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2285191783Srmacklem bitpos = NFSATTRBIT_MAX; 2286191783Srmacklem } else { 2287191783Srmacklem bitpos = 0; 2288191783Srmacklem } 2289191783Srmacklem for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 2290191783Srmacklem if (attrsum > attrsize) { 2291191783Srmacklem error = NFSERR_BADXDR; 2292191783Srmacklem goto nfsmout; 2293191783Srmacklem } 2294191783Srmacklem if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 2295191783Srmacklem switch (bitpos) { 2296191783Srmacklem case NFSATTRBIT_SIZE: 2297191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2298191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2299191783Srmacklem attrsum += NFSX_HYPER; 2300191783Srmacklem break; 2301191783Srmacklem case NFSATTRBIT_ACL: 2302191783Srmacklem error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize, 2303191783Srmacklem p); 2304191783Srmacklem if (error) 2305191783Srmacklem goto nfsmout; 2306191783Srmacklem if (aceerr && !nd->nd_repstat) 2307224077Szack nd->nd_repstat = aceerr; 2308191783Srmacklem attrsum += aclsize; 2309191783Srmacklem break; 2310191783Srmacklem case NFSATTRBIT_ARCHIVE: 2311191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2312191783Srmacklem if (!nd->nd_repstat) 2313191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2314191783Srmacklem attrsum += NFSX_UNSIGNED; 2315191783Srmacklem break; 2316191783Srmacklem case NFSATTRBIT_HIDDEN: 2317191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2318191783Srmacklem if (!nd->nd_repstat) 2319191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2320191783Srmacklem attrsum += NFSX_UNSIGNED; 2321191783Srmacklem break; 2322191783Srmacklem case NFSATTRBIT_MIMETYPE: 2323191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2324191783Srmacklem i = fxdr_unsigned(int, *tl); 2325191783Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 2326191783Srmacklem if (error) 2327191783Srmacklem goto nfsmout; 2328191783Srmacklem if (!nd->nd_repstat) 2329191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2330191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 2331191783Srmacklem break; 2332191783Srmacklem case NFSATTRBIT_MODE: 2333191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2334191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2335191783Srmacklem attrsum += NFSX_UNSIGNED; 2336191783Srmacklem break; 2337191783Srmacklem case NFSATTRBIT_OWNER: 2338191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2339191783Srmacklem j = fxdr_unsigned(int, *tl); 2340191783Srmacklem if (j < 0) 2341191783Srmacklem return (NFSERR_BADXDR); 2342191783Srmacklem if (j > NFSV4_SMALLSTR) 2343191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2344191783Srmacklem else 2345191783Srmacklem cp = namestr; 2346191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2347191783Srmacklem if (error) { 2348191783Srmacklem if (j > NFSV4_SMALLSTR) 2349191783Srmacklem free(cp, M_NFSSTRING); 2350191783Srmacklem return (error); 2351191783Srmacklem } 2352191783Srmacklem if (!nd->nd_repstat) { 2353191783Srmacklem nd->nd_repstat = nfsv4_strtouid(cp,j,&uid,p); 2354191783Srmacklem if (!nd->nd_repstat) 2355191783Srmacklem nvap->na_uid = uid; 2356191783Srmacklem } 2357191783Srmacklem if (j > NFSV4_SMALLSTR) 2358191783Srmacklem free(cp, M_NFSSTRING); 2359191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2360191783Srmacklem break; 2361191783Srmacklem case NFSATTRBIT_OWNERGROUP: 2362191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2363191783Srmacklem j = fxdr_unsigned(int, *tl); 2364191783Srmacklem if (j < 0) 2365191783Srmacklem return (NFSERR_BADXDR); 2366191783Srmacklem if (j > NFSV4_SMALLSTR) 2367191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2368191783Srmacklem else 2369191783Srmacklem cp = namestr; 2370191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2371191783Srmacklem if (error) { 2372191783Srmacklem if (j > NFSV4_SMALLSTR) 2373191783Srmacklem free(cp, M_NFSSTRING); 2374191783Srmacklem return (error); 2375191783Srmacklem } 2376191783Srmacklem if (!nd->nd_repstat) { 2377191783Srmacklem nd->nd_repstat = nfsv4_strtogid(cp,j,&gid,p); 2378191783Srmacklem if (!nd->nd_repstat) 2379191783Srmacklem nvap->na_gid = gid; 2380191783Srmacklem } 2381191783Srmacklem if (j > NFSV4_SMALLSTR) 2382191783Srmacklem free(cp, M_NFSSTRING); 2383191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2384191783Srmacklem break; 2385191783Srmacklem case NFSATTRBIT_SYSTEM: 2386191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2387191783Srmacklem if (!nd->nd_repstat) 2388191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2389191783Srmacklem attrsum += NFSX_UNSIGNED; 2390191783Srmacklem break; 2391191783Srmacklem case NFSATTRBIT_TIMEACCESSSET: 2392191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2393191783Srmacklem attrsum += NFSX_UNSIGNED; 2394191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2395191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2396191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_atime); 2397191783Srmacklem toclient = 1; 2398191783Srmacklem attrsum += NFSX_V4TIME; 2399191783Srmacklem } else { 2400191783Srmacklem NFSGETTIME(&curtime); 2401191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2402191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2403191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2404191783Srmacklem } 2405191783Srmacklem break; 2406191783Srmacklem case NFSATTRBIT_TIMEBACKUP: 2407191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2408191783Srmacklem if (!nd->nd_repstat) 2409191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2410191783Srmacklem attrsum += NFSX_V4TIME; 2411191783Srmacklem break; 2412191783Srmacklem case NFSATTRBIT_TIMECREATE: 2413191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2414191783Srmacklem if (!nd->nd_repstat) 2415191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2416191783Srmacklem attrsum += NFSX_V4TIME; 2417191783Srmacklem break; 2418191783Srmacklem case NFSATTRBIT_TIMEMODIFYSET: 2419191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2420191783Srmacklem attrsum += NFSX_UNSIGNED; 2421191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2422191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2423191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_mtime); 2424191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2425191783Srmacklem attrsum += NFSX_V4TIME; 2426191783Srmacklem } else { 2427191783Srmacklem NFSGETTIME(&curtime); 2428191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2429191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2430191783Srmacklem if (!toclient) 2431191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2432191783Srmacklem } 2433191783Srmacklem break; 2434191783Srmacklem default: 2435191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2436191783Srmacklem /* 2437191783Srmacklem * set bitpos so we drop out of the loop. 2438191783Srmacklem */ 2439191783Srmacklem bitpos = NFSATTRBIT_MAX; 2440191783Srmacklem break; 2441191783Srmacklem }; 2442191783Srmacklem } 2443191783Srmacklem 2444191783Srmacklem /* 2445191783Srmacklem * some clients pad the attrlist, so we need to skip over the 2446191783Srmacklem * padding. 2447191783Srmacklem */ 2448191783Srmacklem if (attrsum > attrsize) { 2449191783Srmacklem error = NFSERR_BADXDR; 2450191783Srmacklem } else { 2451191783Srmacklem attrsize = NFSM_RNDUP(attrsize); 2452191783Srmacklem if (attrsum < attrsize) 2453191783Srmacklem error = nfsm_advance(nd, attrsize - attrsum, -1); 2454191783Srmacklem } 2455191783Srmacklemnfsmout: 2456191783Srmacklem return (error); 2457191783Srmacklem} 2458191783Srmacklem 2459191783Srmacklem/* 2460191783Srmacklem * Check/setup export credentials. 2461191783Srmacklem */ 2462191783Srmacklemint 2463191783Srmacklemnfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 2464191783Srmacklem struct ucred *credanon) 2465191783Srmacklem{ 2466191783Srmacklem int error = 0; 2467191783Srmacklem 2468191783Srmacklem /* 2469191783Srmacklem * Check/setup credentials. 2470191783Srmacklem */ 2471191783Srmacklem if (nd->nd_flag & ND_GSS) 2472192121Srmacklem exp->nes_exflag &= ~MNT_EXPORTANON; 2473191783Srmacklem 2474191783Srmacklem /* 2475192121Srmacklem * Check to see if the operation is allowed for this security flavor. 2476191783Srmacklem * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to 2477191783Srmacklem * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 2478192121Srmacklem * Also, allow Secinfo, so that it can acquire the correct flavor(s). 2479191783Srmacklem */ 2480192121Srmacklem if (nfsvno_testexp(nd, exp) && 2481192121Srmacklem nd->nd_procnum != NFSV4OP_SECINFO && 2482191783Srmacklem nd->nd_procnum != NFSPROC_FSINFO) { 2483191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2484191783Srmacklem error = NFSERR_WRONGSEC; 2485191783Srmacklem else 2486191783Srmacklem error = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2487191783Srmacklem return (error); 2488191783Srmacklem } 2489191783Srmacklem 2490191783Srmacklem /* 2491191783Srmacklem * Check to see if the file system is exported V4 only. 2492191783Srmacklem */ 2493191783Srmacklem if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) 2494191783Srmacklem return (NFSERR_PROGNOTV4); 2495191783Srmacklem 2496191783Srmacklem /* 2497191783Srmacklem * Now, map the user credentials. 2498191783Srmacklem * (Note that ND_AUTHNONE will only be set for an NFSv3 2499191783Srmacklem * Fsinfo RPC. If set for anything else, this code might need 2500191783Srmacklem * to change.) 2501191783Srmacklem */ 2502191783Srmacklem if (NFSVNO_EXPORTED(exp) && 2503191783Srmacklem ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) || 2504191783Srmacklem NFSVNO_EXPORTANON(exp) || 2505191783Srmacklem (nd->nd_flag & ND_AUTHNONE))) { 2506191783Srmacklem nd->nd_cred->cr_uid = credanon->cr_uid; 2507191783Srmacklem nd->nd_cred->cr_gid = credanon->cr_gid; 2508194498Sbrooks crsetgroups(nd->nd_cred, credanon->cr_ngroups, 2509194498Sbrooks credanon->cr_groups); 2510191783Srmacklem } 2511191783Srmacklem return (0); 2512191783Srmacklem} 2513191783Srmacklem 2514191783Srmacklem/* 2515191783Srmacklem * Check exports. 2516191783Srmacklem */ 2517191783Srmacklemint 2518191783Srmacklemnfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 2519191783Srmacklem struct ucred **credp) 2520191783Srmacklem{ 2521192121Srmacklem int i, error, *secflavors; 2522191783Srmacklem 2523191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2524192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2525192121Srmacklem if (error) { 2526192121Srmacklem if (nfs_rootfhset) { 2527192121Srmacklem exp->nes_exflag = 0; 2528192121Srmacklem exp->nes_numsecflavor = 0; 2529192121Srmacklem error = 0; 2530192121Srmacklem } 2531192121Srmacklem } else { 2532192121Srmacklem /* Copy the security flavors. */ 2533192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2534192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2535191783Srmacklem } 2536191783Srmacklem return (error); 2537191783Srmacklem} 2538191783Srmacklem 2539191783Srmacklem/* 2540191783Srmacklem * Get a vnode for a file handle and export stuff. 2541191783Srmacklem */ 2542191783Srmacklemint 2543191783Srmacklemnfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 2544216700Srmacklem int lktype, struct vnode **vpp, struct nfsexstuff *exp, 2545216700Srmacklem struct ucred **credp) 2546191783Srmacklem{ 2547192121Srmacklem int i, error, *secflavors; 2548191783Srmacklem 2549191998Srmacklem *credp = NULL; 2550192121Srmacklem exp->nes_numsecflavor = 0; 2551217063Srmacklem if (VFS_NEEDSGIANT(mp)) 2552217063Srmacklem error = ESTALE; 2553217063Srmacklem else 2554222167Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, vpp); 2555205663Srmacklem if (error != 0) 2556205663Srmacklem /* Make sure the server replies ESTALE to the client. */ 2557205663Srmacklem error = ESTALE; 2558191783Srmacklem if (nam && !error) { 2559191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2560192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2561191783Srmacklem if (error) { 2562191783Srmacklem if (nfs_rootfhset) { 2563191783Srmacklem exp->nes_exflag = 0; 2564192121Srmacklem exp->nes_numsecflavor = 0; 2565191783Srmacklem error = 0; 2566191783Srmacklem } else { 2567191783Srmacklem vput(*vpp); 2568191783Srmacklem } 2569192121Srmacklem } else { 2570192121Srmacklem /* Copy the security flavors. */ 2571192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2572192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2573191783Srmacklem } 2574191783Srmacklem } 2575216700Srmacklem if (error == 0 && lktype == LK_SHARED) 2576216700Srmacklem /* 2577216700Srmacklem * It would be much better to pass lktype to VFS_FHTOVP(), 2578216700Srmacklem * but this will have to do until VFS_FHTOVP() has a lock 2579216700Srmacklem * type argument like VFS_VGET(). 2580216700Srmacklem */ 2581216700Srmacklem vn_lock(*vpp, LK_DOWNGRADE | LK_RETRY); 2582191783Srmacklem return (error); 2583191783Srmacklem} 2584191783Srmacklem 2585191783Srmacklem/* 2586191783Srmacklem * Do the pathconf vnode op. 2587191783Srmacklem */ 2588191783Srmacklemint 2589191783Srmacklemnfsvno_pathconf(struct vnode *vp, int flag, register_t *retf, 2590191783Srmacklem struct ucred *cred, struct thread *p) 2591191783Srmacklem{ 2592191783Srmacklem int error; 2593191783Srmacklem 2594191783Srmacklem error = VOP_PATHCONF(vp, flag, retf); 2595222663Srmacklem if (error == EOPNOTSUPP || error == EINVAL) { 2596222663Srmacklem /* 2597222663Srmacklem * Some file systems return EINVAL for name arguments not 2598222663Srmacklem * supported and some return EOPNOTSUPP for this case. 2599222663Srmacklem * So the NFSv3 Pathconf RPC doesn't fail for these cases, 2600222663Srmacklem * just fake them. 2601222663Srmacklem */ 2602222663Srmacklem switch (flag) { 2603222663Srmacklem case _PC_LINK_MAX: 2604222663Srmacklem *retf = LINK_MAX; 2605222663Srmacklem break; 2606222663Srmacklem case _PC_NAME_MAX: 2607222663Srmacklem *retf = NAME_MAX; 2608222663Srmacklem break; 2609222663Srmacklem case _PC_CHOWN_RESTRICTED: 2610222663Srmacklem *retf = 1; 2611222663Srmacklem break; 2612222663Srmacklem case _PC_NO_TRUNC: 2613222663Srmacklem *retf = 1; 2614222663Srmacklem break; 2615222663Srmacklem default: 2616222663Srmacklem /* 2617222663Srmacklem * Only happens if a _PC_xxx is added to the server, 2618222663Srmacklem * but this isn't updated. 2619222663Srmacklem */ 2620222663Srmacklem *retf = 0; 2621222663Srmacklem printf("nfsrvd pathconf flag=%d not supp\n", flag); 2622222663Srmacklem }; 2623222663Srmacklem error = 0; 2624222663Srmacklem } 2625191783Srmacklem return (error); 2626191783Srmacklem} 2627191783Srmacklem 2628191783Srmacklem/* 2629191783Srmacklem * nfsd_fhtovp() - convert a fh to a vnode ptr 2630191783Srmacklem * - look up fsid in mount list (if not found ret error) 2631191783Srmacklem * - get vp and export rights by calling nfsvno_fhtovp() 2632191783Srmacklem * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2633191783Srmacklem * for AUTH_SYS 2634217063Srmacklem * - if mpp != NULL, return the mount point so that it can 2635217063Srmacklem * be used for vn_finished_write() by the caller 2636191783Srmacklem */ 2637191783Srmacklemvoid 2638216700Srmacklemnfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, int lktype, 2639191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, 2640191783Srmacklem struct mount **mpp, int startwrite, struct thread *p) 2641191783Srmacklem{ 2642191783Srmacklem struct mount *mp; 2643191783Srmacklem struct ucred *credanon; 2644191783Srmacklem fhandle_t *fhp; 2645191783Srmacklem 2646191783Srmacklem fhp = (fhandle_t *)nfp->nfsrvfh_data; 2647191783Srmacklem /* 2648191783Srmacklem * Check for the special case of the nfsv4root_fh. 2649191783Srmacklem */ 2650217017Srmacklem mp = vfs_busyfs(&fhp->fh_fsid); 2651217063Srmacklem if (mpp != NULL) 2652217063Srmacklem *mpp = mp; 2653217017Srmacklem if (mp == NULL) { 2654191783Srmacklem *vpp = NULL; 2655191783Srmacklem nd->nd_repstat = ESTALE; 2656191783Srmacklem return; 2657191783Srmacklem } 2658191783Srmacklem 2659191783Srmacklem if (startwrite) 2660191783Srmacklem vn_start_write(NULL, mpp, V_WAIT); 2661191783Srmacklem 2662216700Srmacklem nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, lktype, vpp, exp, 2663191783Srmacklem &credanon); 2664217017Srmacklem vfs_unbusy(mp); 2665191783Srmacklem 2666191783Srmacklem /* 2667191783Srmacklem * For NFSv4 without a pseudo root fs, unexported file handles 2668191783Srmacklem * can be returned, so that Lookup works everywhere. 2669191783Srmacklem */ 2670191783Srmacklem if (!nd->nd_repstat && exp->nes_exflag == 0 && 2671191783Srmacklem !(nd->nd_flag & ND_NFSV4)) { 2672191783Srmacklem vput(*vpp); 2673191783Srmacklem nd->nd_repstat = EACCES; 2674191783Srmacklem } 2675191783Srmacklem 2676191783Srmacklem /* 2677191783Srmacklem * Personally, I've never seen any point in requiring a 2678191783Srmacklem * reserved port#, since only in the rare case where the 2679191783Srmacklem * clients are all boxes with secure system priviledges, 2680191783Srmacklem * does it provide any enhanced security, but... some people 2681191783Srmacklem * believe it to be useful and keep putting this code back in. 2682191783Srmacklem * (There is also some "security checker" out there that 2683191783Srmacklem * complains if the nfs server doesn't enforce this.) 2684191783Srmacklem * However, note the following: 2685191783Srmacklem * RFC3530 (NFSv4) specifies that a reserved port# not be 2686191783Srmacklem * required. 2687191783Srmacklem * RFC2623 recommends that, if a reserved port# is checked for, 2688191783Srmacklem * that there be a way to turn that off--> ifdef'd. 2689191783Srmacklem */ 2690191783Srmacklem#ifdef NFS_REQRSVPORT 2691191783Srmacklem if (!nd->nd_repstat) { 2692192121Srmacklem struct sockaddr_in *saddr; 2693192121Srmacklem struct sockaddr_in6 *saddr6; 2694192121Srmacklem 2695192121Srmacklem saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 2696192121Srmacklem saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 2697192121Srmacklem if (!(nd->nd_flag & ND_NFSV4) && 2698192121Srmacklem ((saddr->sin_family == AF_INET && 2699192121Srmacklem ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 2700192121Srmacklem (saddr6->sin6_family == AF_INET6 && 2701192121Srmacklem ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 2702192121Srmacklem vput(*vpp); 2703192121Srmacklem nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2704192121Srmacklem } 2705191783Srmacklem } 2706191783Srmacklem#endif /* NFS_REQRSVPORT */ 2707191783Srmacklem 2708191783Srmacklem /* 2709191783Srmacklem * Check/setup credentials. 2710191783Srmacklem */ 2711191783Srmacklem if (!nd->nd_repstat) { 2712191783Srmacklem nd->nd_saveduid = nd->nd_cred->cr_uid; 2713191783Srmacklem nd->nd_repstat = nfsd_excred(nd, exp, credanon); 2714191783Srmacklem if (nd->nd_repstat) 2715191783Srmacklem vput(*vpp); 2716191783Srmacklem } 2717191940Skan if (credanon != NULL) 2718191940Skan crfree(credanon); 2719191783Srmacklem if (nd->nd_repstat) { 2720191783Srmacklem if (startwrite) 2721191783Srmacklem vn_finished_write(mp); 2722191783Srmacklem *vpp = NULL; 2723217063Srmacklem if (mpp != NULL) 2724217063Srmacklem *mpp = NULL; 2725191783Srmacklem } 2726191783Srmacklem} 2727191783Srmacklem 2728191783Srmacklem/* 2729191783Srmacklem * glue for fp. 2730191783Srmacklem */ 2731191783Srmacklemint 2732191783Srmacklemfp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 2733191783Srmacklem{ 2734191783Srmacklem struct filedesc *fdp; 2735191783Srmacklem struct file *fp; 2736191783Srmacklem 2737191783Srmacklem fdp = p->td_proc->p_fd; 2738191783Srmacklem if (fd >= fdp->fd_nfiles || 2739191783Srmacklem (fp = fdp->fd_ofiles[fd]) == NULL) 2740191783Srmacklem return (EBADF); 2741191783Srmacklem *fpp = fp; 2742191783Srmacklem return (0); 2743191783Srmacklem} 2744191783Srmacklem 2745191783Srmacklem/* 2746192121Srmacklem * Called from nfssvc() to update the exports list. Just call 2747191783Srmacklem * vfs_export(). This has to be done, since the v4 root fake fs isn't 2748191783Srmacklem * in the mount list. 2749191783Srmacklem */ 2750191783Srmacklemint 2751191783Srmacklemnfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 2752191783Srmacklem{ 2753191783Srmacklem struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 2754191783Srmacklem int error; 2755191783Srmacklem struct nameidata nd; 2756191783Srmacklem fhandle_t fh; 2757191783Srmacklem 2758191783Srmacklem error = vfs_export(&nfsv4root_mnt, &nfsexargp->export); 2759216894Srmacklem if ((nfsexargp->export.ex_flags & MNT_DELEXPORT) != 0) 2760191783Srmacklem nfs_rootfhset = 0; 2761216894Srmacklem else if (error == 0) { 2762191783Srmacklem if (nfsexargp->fspec == NULL) 2763191783Srmacklem return (EPERM); 2764191783Srmacklem /* 2765191783Srmacklem * If fspec != NULL, this is the v4root path. 2766191783Srmacklem */ 2767191783Srmacklem NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_USERSPACE, 2768191783Srmacklem nfsexargp->fspec, p); 2769191783Srmacklem if ((error = namei(&nd)) != 0) 2770191783Srmacklem return (error); 2771191783Srmacklem error = nfsvno_getfh(nd.ni_vp, &fh, p); 2772191783Srmacklem vrele(nd.ni_vp); 2773191783Srmacklem if (!error) { 2774191783Srmacklem nfs_rootfh.nfsrvfh_len = NFSX_MYFH; 2775191783Srmacklem NFSBCOPY((caddr_t)&fh, 2776191783Srmacklem nfs_rootfh.nfsrvfh_data, 2777191783Srmacklem sizeof (fhandle_t)); 2778191783Srmacklem nfs_rootfhset = 1; 2779191783Srmacklem } 2780191783Srmacklem } 2781191783Srmacklem return (error); 2782191783Srmacklem} 2783191783Srmacklem 2784191783Srmacklem/* 2785191783Srmacklem * Get the tcp socket sequence numbers we need. 2786191783Srmacklem * (Maybe this should be moved to the tcp sources?) 2787191783Srmacklem */ 2788191783Srmacklemint 2789191783Srmacklemnfsrv_getsocksndseq(struct socket *so, tcp_seq *maxp, tcp_seq *unap) 2790191783Srmacklem{ 2791191783Srmacklem struct inpcb *inp; 2792191783Srmacklem struct tcpcb *tp; 2793191783Srmacklem 2794191783Srmacklem inp = sotoinpcb(so); 2795205010Srwatson KASSERT(inp != NULL, ("nfsrv_getsocksndseq: inp == NULL")); 2796205010Srwatson INP_RLOCK(inp); 2797205010Srwatson if (inp->inp_flags & (INP_TIMEWAIT | INP_DROPPED)) { 2798205010Srwatson INP_RUNLOCK(inp); 2799205010Srwatson return (EPIPE); 2800191783Srmacklem } 2801191783Srmacklem tp = intotcpcb(inp); 2802205010Srwatson if (tp->t_state != TCPS_ESTABLISHED) { 2803205010Srwatson INP_RUNLOCK(inp); 2804205010Srwatson return (EPIPE); 2805191783Srmacklem } 2806205010Srwatson *maxp = tp->snd_max; 2807205010Srwatson *unap = tp->snd_una; 2808191783Srmacklem INP_RUNLOCK(inp); 2809205010Srwatson return (0); 2810191783Srmacklem} 2811191783Srmacklem 2812191783Srmacklem/* 2813191783Srmacklem * This function needs to test to see if the system is near its limit 2814191783Srmacklem * for memory allocation via malloc() or mget() and return True iff 2815191783Srmacklem * either of these resources are near their limit. 2816191783Srmacklem * XXX (For now, this is just a stub.) 2817191783Srmacklem */ 2818191783Srmacklemint nfsrv_testmalloclimit = 0; 2819191783Srmacklemint 2820191783Srmacklemnfsrv_mallocmget_limit(void) 2821191783Srmacklem{ 2822191783Srmacklem static int printmesg = 0; 2823191783Srmacklem static int testval = 1; 2824191783Srmacklem 2825191783Srmacklem if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 2826191783Srmacklem if ((printmesg++ % 100) == 0) 2827191783Srmacklem printf("nfsd: malloc/mget near limit\n"); 2828191783Srmacklem return (1); 2829191783Srmacklem } 2830191783Srmacklem return (0); 2831191783Srmacklem} 2832191783Srmacklem 2833191783Srmacklem/* 2834191783Srmacklem * BSD specific initialization of a mount point. 2835191783Srmacklem */ 2836191783Srmacklemvoid 2837191783Srmacklemnfsd_mntinit(void) 2838191783Srmacklem{ 2839191783Srmacklem static int inited = 0; 2840191783Srmacklem 2841191783Srmacklem if (inited) 2842191783Srmacklem return; 2843191783Srmacklem inited = 1; 2844191783Srmacklem nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 2845191783Srmacklem TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist); 2846191783Srmacklem nfsv4root_mnt.mnt_export = NULL; 2847191783Srmacklem TAILQ_INIT(&nfsv4root_opt); 2848191783Srmacklem TAILQ_INIT(&nfsv4root_newopt); 2849191783Srmacklem nfsv4root_mnt.mnt_opt = &nfsv4root_opt; 2850191783Srmacklem nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt; 2851191783Srmacklem nfsv4root_mnt.mnt_nvnodelistsize = 0; 2852191783Srmacklem} 2853191783Srmacklem 2854191783Srmacklem/* 2855191783Srmacklem * Get a vnode for a file handle, without checking exports, etc. 2856191783Srmacklem */ 2857191783Srmacklemstruct vnode * 2858191783Srmacklemnfsvno_getvp(fhandle_t *fhp) 2859191783Srmacklem{ 2860191783Srmacklem struct mount *mp; 2861191783Srmacklem struct vnode *vp; 2862191783Srmacklem int error; 2863191783Srmacklem 2864217017Srmacklem mp = vfs_busyfs(&fhp->fh_fsid); 2865191783Srmacklem if (mp == NULL) 2866191783Srmacklem return (NULL); 2867222167Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, LK_EXCLUSIVE, &vp); 2868217017Srmacklem vfs_unbusy(mp); 2869191783Srmacklem if (error) 2870191783Srmacklem return (NULL); 2871191783Srmacklem return (vp); 2872191783Srmacklem} 2873191783Srmacklem 2874191783Srmacklem/* 2875191783Srmacklem * Do a local VOP_ADVLOCK(). 2876191783Srmacklem */ 2877191783Srmacklemint 2878191783Srmacklemnfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 2879192256Srmacklem u_int64_t end, struct thread *td) 2880191783Srmacklem{ 2881191783Srmacklem int error; 2882191783Srmacklem struct flock fl; 2883191783Srmacklem u_int64_t tlen; 2884191783Srmacklem 2885212833Srmacklem if (nfsrv_dolocallocks == 0) 2886191783Srmacklem return (0); 2887216893Srmacklem 2888216893Srmacklem /* Check for VI_DOOMED here, so that VOP_ADVLOCK() isn't performed. */ 2889216893Srmacklem if ((vp->v_iflag & VI_DOOMED) != 0) 2890216893Srmacklem return (EPERM); 2891216893Srmacklem 2892191783Srmacklem fl.l_whence = SEEK_SET; 2893191783Srmacklem fl.l_type = ftype; 2894191783Srmacklem fl.l_start = (off_t)first; 2895191783Srmacklem if (end == NFS64BITSSET) { 2896191783Srmacklem fl.l_len = 0; 2897191783Srmacklem } else { 2898191783Srmacklem tlen = end - first; 2899191783Srmacklem fl.l_len = (off_t)tlen; 2900191783Srmacklem } 2901191783Srmacklem /* 2902192256Srmacklem * For FreeBSD8, the l_pid and l_sysid must be set to the same 2903192256Srmacklem * values for all calls, so that all locks will be held by the 2904192256Srmacklem * nfsd server. (The nfsd server handles conflicts between the 2905192256Srmacklem * various clients.) 2906192256Srmacklem * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 2907192256Srmacklem * bytes, so it can't be put in l_sysid. 2908191783Srmacklem */ 2909192503Srmacklem if (nfsv4_sysid == 0) 2910192503Srmacklem nfsv4_sysid = nlm_acquire_next_sysid(); 2911192256Srmacklem fl.l_pid = (pid_t)0; 2912192503Srmacklem fl.l_sysid = (int)nfsv4_sysid; 2913192256Srmacklem 2914192256Srmacklem NFSVOPUNLOCK(vp, 0, td); 2915212833Srmacklem if (ftype == F_UNLCK) 2916212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_UNLCK, &fl, 2917212833Srmacklem (F_POSIX | F_REMOTE)); 2918212833Srmacklem else 2919212833Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 2920212833Srmacklem (F_POSIX | F_REMOTE)); 2921192256Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, td); 2922191783Srmacklem return (error); 2923191783Srmacklem} 2924191783Srmacklem 2925191783Srmacklem/* 2926191783Srmacklem * Check the nfsv4 root exports. 2927191783Srmacklem */ 2928191783Srmacklemint 2929191783Srmacklemnfsvno_v4rootexport(struct nfsrv_descript *nd) 2930191783Srmacklem{ 2931191783Srmacklem struct ucred *credanon; 2932192121Srmacklem int exflags, error, numsecflavor, *secflavors, i; 2933191783Srmacklem 2934191783Srmacklem error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags, 2935192121Srmacklem &credanon, &numsecflavor, &secflavors); 2936191783Srmacklem if (error) 2937191783Srmacklem return (NFSERR_PROGUNAVAIL); 2938191940Skan if (credanon != NULL) 2939191940Skan crfree(credanon); 2940192121Srmacklem for (i = 0; i < numsecflavor; i++) { 2941192121Srmacklem if (secflavors[i] == AUTH_SYS) 2942192121Srmacklem nd->nd_flag |= ND_EXAUTHSYS; 2943192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5) 2944192121Srmacklem nd->nd_flag |= ND_EXGSS; 2945192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5I) 2946192121Srmacklem nd->nd_flag |= ND_EXGSSINTEGRITY; 2947192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5P) 2948192121Srmacklem nd->nd_flag |= ND_EXGSSPRIVACY; 2949192121Srmacklem } 2950191783Srmacklem return (0); 2951191783Srmacklem} 2952191783Srmacklem 2953191783Srmacklem/* 2954191783Srmacklem * Nfs server psuedo system call for the nfsd's 2955191783Srmacklem */ 2956191783Srmacklem/* 2957191783Srmacklem * MPSAFE 2958191783Srmacklem */ 2959191783Srmacklemstatic int 2960191783Srmacklemnfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 2961191783Srmacklem{ 2962191783Srmacklem struct file *fp; 2963192017Srmacklem struct nfsd_addsock_args sockarg; 2964192017Srmacklem struct nfsd_nfsd_args nfsdarg; 2965191783Srmacklem int error; 2966191783Srmacklem 2967191783Srmacklem if (uap->flag & NFSSVC_NFSDADDSOCK) { 2968192017Srmacklem error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 2969191783Srmacklem if (error) 2970191783Srmacklem return (error); 2971192017Srmacklem if ((error = fget(td, sockarg.sock, &fp)) != 0) { 2972191783Srmacklem return (error); 2973191783Srmacklem } 2974191783Srmacklem if (fp->f_type != DTYPE_SOCKET) { 2975191783Srmacklem fdrop(fp, td); 2976191783Srmacklem return (EPERM); 2977191783Srmacklem } 2978191783Srmacklem error = nfsrvd_addsock(fp); 2979191783Srmacklem fdrop(fp, td); 2980191783Srmacklem } else if (uap->flag & NFSSVC_NFSDNFSD) { 2981192017Srmacklem if (uap->argp == NULL) 2982192017Srmacklem return (EINVAL); 2983192017Srmacklem error = copyin(uap->argp, (caddr_t)&nfsdarg, 2984192017Srmacklem sizeof (nfsdarg)); 2985192017Srmacklem if (error) 2986192017Srmacklem return (error); 2987192017Srmacklem error = nfsrvd_nfsd(td, &nfsdarg); 2988191783Srmacklem } else { 2989191783Srmacklem error = nfssvc_srvcall(td, uap, td->td_ucred); 2990191783Srmacklem } 2991191783Srmacklem return (error); 2992191783Srmacklem} 2993191783Srmacklem 2994191783Srmacklemstatic int 2995191783Srmacklemnfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 2996191783Srmacklem{ 2997191783Srmacklem struct nfsex_args export; 2998191783Srmacklem struct file *fp = NULL; 2999191783Srmacklem int stablefd, len; 3000191783Srmacklem struct nfsd_clid adminrevoke; 3001191783Srmacklem struct nfsd_dumplist dumplist; 3002191783Srmacklem struct nfsd_dumpclients *dumpclients; 3003191783Srmacklem struct nfsd_dumplocklist dumplocklist; 3004191783Srmacklem struct nfsd_dumplocks *dumplocks; 3005191783Srmacklem struct nameidata nd; 3006191783Srmacklem vnode_t vp; 3007191783Srmacklem int error = EINVAL; 3008217432Srmacklem struct proc *procp; 3009191783Srmacklem 3010191783Srmacklem if (uap->flag & NFSSVC_PUBLICFH) { 3011191783Srmacklem NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 3012191783Srmacklem sizeof (fhandle_t)); 3013191783Srmacklem error = copyin(uap->argp, 3014191783Srmacklem &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 3015191783Srmacklem if (!error) 3016191783Srmacklem nfs_pubfhset = 1; 3017191783Srmacklem } else if (uap->flag & NFSSVC_V4ROOTEXPORT) { 3018191783Srmacklem error = copyin(uap->argp,(caddr_t)&export, 3019191783Srmacklem sizeof (struct nfsex_args)); 3020191783Srmacklem if (!error) 3021191783Srmacklem error = nfsrv_v4rootexport(&export, cred, p); 3022191783Srmacklem } else if (uap->flag & NFSSVC_NOPUBLICFH) { 3023191783Srmacklem nfs_pubfhset = 0; 3024191783Srmacklem error = 0; 3025191783Srmacklem } else if (uap->flag & NFSSVC_STABLERESTART) { 3026191783Srmacklem error = copyin(uap->argp, (caddr_t)&stablefd, 3027191783Srmacklem sizeof (int)); 3028191783Srmacklem if (!error) 3029191783Srmacklem error = fp_getfvp(p, stablefd, &fp, &vp); 3030191783Srmacklem if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 3031191783Srmacklem error = EBADF; 3032191783Srmacklem if (!error && newnfs_numnfsd != 0) 3033191783Srmacklem error = EPERM; 3034191783Srmacklem if (!error) { 3035191783Srmacklem nfsrv_stablefirst.nsf_fp = fp; 3036191783Srmacklem nfsrv_setupstable(p); 3037191783Srmacklem } 3038191783Srmacklem } else if (uap->flag & NFSSVC_ADMINREVOKE) { 3039191783Srmacklem error = copyin(uap->argp, (caddr_t)&adminrevoke, 3040191783Srmacklem sizeof (struct nfsd_clid)); 3041191783Srmacklem if (!error) 3042191783Srmacklem error = nfsrv_adminrevoke(&adminrevoke, p); 3043191783Srmacklem } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 3044191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplist, 3045191783Srmacklem sizeof (struct nfsd_dumplist)); 3046191783Srmacklem if (!error && (dumplist.ndl_size < 1 || 3047191783Srmacklem dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 3048191783Srmacklem error = EPERM; 3049191783Srmacklem if (!error) { 3050191783Srmacklem len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 3051191783Srmacklem dumpclients = (struct nfsd_dumpclients *)malloc(len, 3052191783Srmacklem M_TEMP, M_WAITOK); 3053191783Srmacklem nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 3054191783Srmacklem error = copyout(dumpclients, 3055191783Srmacklem CAST_USER_ADDR_T(dumplist.ndl_list), len); 3056191783Srmacklem free((caddr_t)dumpclients, M_TEMP); 3057191783Srmacklem } 3058191783Srmacklem } else if (uap->flag & NFSSVC_DUMPLOCKS) { 3059191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplocklist, 3060191783Srmacklem sizeof (struct nfsd_dumplocklist)); 3061191783Srmacklem if (!error && (dumplocklist.ndllck_size < 1 || 3062191783Srmacklem dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 3063191783Srmacklem error = EPERM; 3064191783Srmacklem if (!error) 3065191783Srmacklem error = nfsrv_lookupfilename(&nd, 3066191783Srmacklem dumplocklist.ndllck_fname, p); 3067191783Srmacklem if (!error) { 3068191783Srmacklem len = sizeof (struct nfsd_dumplocks) * 3069191783Srmacklem dumplocklist.ndllck_size; 3070191783Srmacklem dumplocks = (struct nfsd_dumplocks *)malloc(len, 3071191783Srmacklem M_TEMP, M_WAITOK); 3072191783Srmacklem nfsrv_dumplocks(nd.ni_vp, dumplocks, 3073191783Srmacklem dumplocklist.ndllck_size, p); 3074191783Srmacklem vput(nd.ni_vp); 3075191783Srmacklem error = copyout(dumplocks, 3076191783Srmacklem CAST_USER_ADDR_T(dumplocklist.ndllck_list), len); 3077191783Srmacklem free((caddr_t)dumplocks, M_TEMP); 3078191783Srmacklem } 3079217432Srmacklem } else if (uap->flag & NFSSVC_BACKUPSTABLE) { 3080217432Srmacklem procp = p->td_proc; 3081217432Srmacklem PROC_LOCK(procp); 3082217432Srmacklem nfsd_master_pid = procp->p_pid; 3083217432Srmacklem bcopy(procp->p_comm, nfsd_master_comm, MAXCOMLEN + 1); 3084217432Srmacklem nfsd_master_start = procp->p_stats->p_start; 3085217432Srmacklem nfsd_master_proc = procp; 3086217432Srmacklem PROC_UNLOCK(procp); 3087191783Srmacklem } 3088191783Srmacklem return (error); 3089191783Srmacklem} 3090191783Srmacklem 3091192121Srmacklem/* 3092192121Srmacklem * Check exports. 3093192121Srmacklem * Returns 0 if ok, 1 otherwise. 3094192121Srmacklem */ 3095192121Srmacklemint 3096192121Srmacklemnfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 3097192121Srmacklem{ 3098192121Srmacklem int i; 3099192121Srmacklem 3100192121Srmacklem /* 3101192121Srmacklem * This seems odd, but allow the case where the security flavor 3102192121Srmacklem * list is empty. This happens when NFSv4 is traversing non-exported 3103192121Srmacklem * file systems. Exported file systems should always have a non-empty 3104192121Srmacklem * security flavor list. 3105192121Srmacklem */ 3106192121Srmacklem if (exp->nes_numsecflavor == 0) 3107192121Srmacklem return (0); 3108192121Srmacklem 3109192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) { 3110192121Srmacklem /* 3111192121Srmacklem * The tests for privacy and integrity must be first, 3112192121Srmacklem * since ND_GSS is set for everything but AUTH_SYS. 3113192121Srmacklem */ 3114192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 3115192121Srmacklem (nd->nd_flag & ND_GSSPRIVACY)) 3116192121Srmacklem return (0); 3117192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 3118192121Srmacklem (nd->nd_flag & ND_GSSINTEGRITY)) 3119192121Srmacklem return (0); 3120192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 3121192121Srmacklem (nd->nd_flag & ND_GSS)) 3122192121Srmacklem return (0); 3123192121Srmacklem if (exp->nes_secflavors[i] == AUTH_SYS && 3124192121Srmacklem (nd->nd_flag & ND_GSS) == 0) 3125192121Srmacklem return (0); 3126192121Srmacklem } 3127192121Srmacklem return (1); 3128192121Srmacklem} 3129192121Srmacklem 3130214224Srmacklem/* 3131214224Srmacklem * Calculate a hash value for the fid in a file handle. 3132214224Srmacklem */ 3133214255Srmacklemuint32_t 3134214224Srmacklemnfsrv_hashfh(fhandle_t *fhp) 3135214224Srmacklem{ 3136214255Srmacklem uint32_t hashval; 3137214224Srmacklem 3138214255Srmacklem hashval = hash32_buf(&fhp->fh_fid, sizeof(struct fid), 0); 3139214224Srmacklem return (hashval); 3140214224Srmacklem} 3141214224Srmacklem 3142217432Srmacklem/* 3143217432Srmacklem * Signal the userland master nfsd to backup the stable restart file. 3144217432Srmacklem */ 3145217432Srmacklemvoid 3146217432Srmacklemnfsrv_backupstable(void) 3147217432Srmacklem{ 3148217432Srmacklem struct proc *procp; 3149217432Srmacklem 3150217432Srmacklem if (nfsd_master_proc != NULL) { 3151217432Srmacklem procp = pfind(nfsd_master_pid); 3152217432Srmacklem /* Try to make sure it is the correct process. */ 3153217432Srmacklem if (procp == nfsd_master_proc && 3154217432Srmacklem procp->p_stats->p_start.tv_sec == 3155217432Srmacklem nfsd_master_start.tv_sec && 3156217432Srmacklem procp->p_stats->p_start.tv_usec == 3157217432Srmacklem nfsd_master_start.tv_usec && 3158217432Srmacklem strcmp(procp->p_comm, nfsd_master_comm) == 0) 3159217432Srmacklem psignal(procp, SIGUSR2); 3160217432Srmacklem else 3161217432Srmacklem nfsd_master_proc = NULL; 3162217432Srmacklem 3163217432Srmacklem if (procp != NULL) 3164217432Srmacklem PROC_UNLOCK(procp); 3165217432Srmacklem } 3166217432Srmacklem} 3167217432Srmacklem 3168191783Srmacklemextern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 3169191783Srmacklem 3170191783Srmacklem/* 3171191783Srmacklem * Called once to initialize data structures... 3172191783Srmacklem */ 3173191783Srmacklemstatic int 3174191783Srmacklemnfsd_modevent(module_t mod, int type, void *data) 3175191783Srmacklem{ 3176191783Srmacklem int error = 0; 3177191783Srmacklem static int loaded = 0; 3178191783Srmacklem 3179191783Srmacklem switch (type) { 3180191783Srmacklem case MOD_LOAD: 3181191783Srmacklem if (loaded) 3182191783Srmacklem return (0); 3183191783Srmacklem newnfs_portinit(); 3184191783Srmacklem mtx_init(&nfs_cache_mutex, "nfs_cache_mutex", NULL, MTX_DEF); 3185191783Srmacklem mtx_init(&nfs_v4root_mutex, "nfs_v4root_mutex", NULL, MTX_DEF); 3186191783Srmacklem mtx_init(&nfsv4root_mnt.mnt_mtx, "struct mount mtx", NULL, 3187191783Srmacklem MTX_DEF); 3188191783Srmacklem lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0); 3189191783Srmacklem nfsrvd_initcache(); 3190191783Srmacklem nfsd_init(); 3191191783Srmacklem NFSD_LOCK(); 3192191783Srmacklem nfsrvd_init(0); 3193191783Srmacklem NFSD_UNLOCK(); 3194191783Srmacklem nfsd_mntinit(); 3195191783Srmacklem#ifdef VV_DISABLEDELEG 3196191783Srmacklem vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 3197191783Srmacklem vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 3198191783Srmacklem#endif 3199191783Srmacklem nfsd_call_servertimer = nfsrv_servertimer; 3200191783Srmacklem nfsd_call_nfsd = nfssvc_nfsd; 3201191783Srmacklem loaded = 1; 3202191783Srmacklem break; 3203191783Srmacklem 3204191783Srmacklem case MOD_UNLOAD: 3205191783Srmacklem if (newnfs_numnfsd != 0) { 3206191783Srmacklem error = EBUSY; 3207191783Srmacklem break; 3208191783Srmacklem } 3209191783Srmacklem 3210191783Srmacklem#ifdef VV_DISABLEDELEG 3211191783Srmacklem vn_deleg_ops.vndeleg_recall = NULL; 3212191783Srmacklem vn_deleg_ops.vndeleg_disable = NULL; 3213191783Srmacklem#endif 3214191783Srmacklem nfsd_call_servertimer = NULL; 3215191783Srmacklem nfsd_call_nfsd = NULL; 3216217335Szack 3217220530Srmacklem /* Clean out all NFSv4 state. */ 3218220530Srmacklem nfsrv_throwawayallstate(curthread); 3219220530Srmacklem 3220217335Szack /* Clean the NFS server reply cache */ 3221217335Szack nfsrvd_cleancache(); 3222217335Szack 3223220530Srmacklem /* Free up the krpc server pool. */ 3224220530Srmacklem if (nfsrvd_pool != NULL) 3225220530Srmacklem svcpool_destroy(nfsrvd_pool); 3226220530Srmacklem 3227191783Srmacklem /* and get rid of the locks */ 3228191783Srmacklem mtx_destroy(&nfs_cache_mutex); 3229191783Srmacklem mtx_destroy(&nfs_v4root_mutex); 3230191783Srmacklem mtx_destroy(&nfsv4root_mnt.mnt_mtx); 3231191783Srmacklem lockdestroy(&nfsv4root_mnt.mnt_explock); 3232191783Srmacklem loaded = 0; 3233191783Srmacklem break; 3234191783Srmacklem default: 3235191783Srmacklem error = EOPNOTSUPP; 3236191783Srmacklem break; 3237191783Srmacklem } 3238191783Srmacklem return error; 3239191783Srmacklem} 3240191783Srmacklemstatic moduledata_t nfsd_mod = { 3241191783Srmacklem "nfsd", 3242191783Srmacklem nfsd_modevent, 3243191783Srmacklem NULL, 3244191783Srmacklem}; 3245191783SrmacklemDECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 3246191783Srmacklem 3247191783Srmacklem/* So that loader and kldload(2) can find us, wherever we are.. */ 3248191783SrmacklemMODULE_VERSION(nfsd, 1); 3249191783SrmacklemMODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 3250216931SrmacklemMODULE_DEPEND(nfsd, nfslock, 1, 1, 1); 3251192574SrmacklemMODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 3252209191SrmacklemMODULE_DEPEND(nfsd, krpc, 1, 1, 1); 3253209191SrmacklemMODULE_DEPEND(nfsd, nfssvc, 1, 1, 1); 3254191783Srmacklem 3255