nfs_nfsdport.c revision 191998
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 191998 2009-05-11 18:45:04Z rmacklem $"); 36191783Srmacklem 37191783Srmacklem/* 38191783Srmacklem * Functions that perform the vfs operations required by the routines in 39191783Srmacklem * nfsd_serv.c. It is hoped that this change will make the server more 40191783Srmacklem * portable. 41191783Srmacklem */ 42191783Srmacklem 43191783Srmacklem#include <fs/nfs/nfsport.h> 44191783Srmacklem#include <sys/sysctl.h> 45191783Srmacklem 46191783Srmacklemextern int nfsrv_dolocallocks; 47191783Srmacklemextern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1; 48191783Srmacklemextern int nfsv4root_set; 49191783Srmacklemextern int nfsrv_useacl; 50191783Srmacklemextern int newnfs_numnfsd; 51191783Srmacklemextern struct mount nfsv4root_mnt; 52191783Srmacklemextern struct nfsrv_stablefirst nfsrv_stablefirst; 53191783Srmacklemextern void (*nfsd_call_servertimer)(void); 54191783Srmacklemstruct vfsoptlist nfsv4root_opt, nfsv4root_newopt; 55191783SrmacklemNFSDLOCKMUTEX; 56191783Srmacklemstruct mtx nfs_cache_mutex; 57191783Srmacklemstruct mtx nfs_v4root_mutex; 58191783Srmacklemstruct nfsrvfh nfs_rootfh, nfs_pubfh; 59191783Srmacklemint nfs_pubfhset = 0, nfs_rootfhset = 0; 60191783Srmacklem 61191783Srmacklemstatic int nfssvc_srvcall(struct thread *, struct nfssvc_args *, struct ucred *); 62191783Srmacklem 63191783Srmacklemstatic int enable_crossmntpt = 1; 64191783Srmacklemstatic int nfs_commit_blks; 65191783Srmacklemstatic int nfs_commit_miss; 66191783Srmacklemextern int nfsrv_issuedelegs; 67191783SrmacklemSYSCTL_DECL(_vfs_newnfs); 68191783SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, mirrormnt, CTLFLAG_RW, &enable_crossmntpt, 0, ""); 69191783SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 0, ""); 70191783SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 0, ""); 71191783SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, issue_delegations, CTLFLAG_RW, &nfsrv_issuedelegs, 0, ""); 72191783Srmacklem 73191783Srmacklem#define NUM_HEURISTIC 1017 74191783Srmacklem#define NHUSE_INIT 64 75191783Srmacklem#define NHUSE_INC 16 76191783Srmacklem#define NHUSE_MAX 2048 77191783Srmacklem 78191783Srmacklemstatic struct nfsheur { 79191783Srmacklem struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 80191783Srmacklem off_t nh_nextr; /* next offset for sequential detection */ 81191783Srmacklem int nh_use; /* use count for selection */ 82191783Srmacklem int nh_seqcount; /* heuristic */ 83191783Srmacklem} nfsheur[NUM_HEURISTIC]; 84191783Srmacklem 85191783Srmacklem 86191783Srmacklem/* 87191783Srmacklem * Get attributes into nfsvattr structure. 88191783Srmacklem */ 89191783Srmacklemint 90191783Srmacklemnfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 91191783Srmacklem struct thread *p) 92191783Srmacklem{ 93191783Srmacklem int error, lockedit = 0; 94191783Srmacklem 95191783Srmacklem /* Since FreeBSD insists the vnode be locked... */ 96191783Srmacklem if (VOP_ISLOCKED(vp) != LK_EXCLUSIVE) { 97191783Srmacklem lockedit = 1; 98191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 99191783Srmacklem } 100191783Srmacklem error = VOP_GETATTR(vp, &nvap->na_vattr, cred); 101191783Srmacklem if (lockedit) 102191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 103191783Srmacklem return (error); 104191783Srmacklem} 105191783Srmacklem 106191783Srmacklem/* 107191783Srmacklem * Get a file handle for a vnode. 108191783Srmacklem */ 109191783Srmacklemint 110191783Srmacklemnfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 111191783Srmacklem{ 112191783Srmacklem int error; 113191783Srmacklem 114191783Srmacklem NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 115191783Srmacklem fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 116191783Srmacklem error = VOP_VPTOFH(vp, &fhp->fh_fid); 117191783Srmacklem return (error); 118191783Srmacklem} 119191783Srmacklem 120191783Srmacklem/* 121191783Srmacklem * Perform access checking for vnodes obtained from file handles that would 122191783Srmacklem * refer to files already opened by a Unix client. You cannot just use 123191783Srmacklem * vn_writechk() and VOP_ACCESS() for two reasons. 124191783Srmacklem * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write case 125191783Srmacklem * 2 - The owner is to be given access irrespective of mode bits for some 126191783Srmacklem * operations, so that processes that chmod after opening a file don't 127191783Srmacklem * break. 128191783Srmacklem */ 129191783Srmacklemint 130191783Srmacklemnfsvno_accchk(struct vnode *vp, u_int32_t accessbits, struct ucred *cred, 131191783Srmacklem struct nfsexstuff *exp, struct thread *p, int override, int vpislocked) 132191783Srmacklem{ 133191783Srmacklem struct vattr vattr; 134191783Srmacklem int error = 0, getret = 0; 135191783Srmacklem accmode_t accmode; 136191783Srmacklem 137191783Srmacklem /* 138191783Srmacklem * Convert accessbits to Vxxx flags. 139191783Srmacklem */ 140191783Srmacklem if (accessbits & (NFSV4ACE_WRITEDATA | NFSV4ACE_APPENDDATA | 141191783Srmacklem NFSV4ACE_ADDFILE | NFSV4ACE_ADDSUBDIRECTORY | 142191783Srmacklem NFSV4ACE_DELETECHILD | NFSV4ACE_WRITEATTRIBUTES | 143191783Srmacklem NFSV4ACE_DELETE | NFSV4ACE_WRITEACL | NFSV4ACE_WRITEOWNER)) 144191783Srmacklem accmode = VWRITE; 145191783Srmacklem else if (accessbits & (NFSV4ACE_EXECUTE | NFSV4ACE_SEARCH)) 146191783Srmacklem accmode = VEXEC; 147191783Srmacklem else 148191783Srmacklem accmode = VREAD; 149191783Srmacklem 150191783Srmacklem if (accmode & VWRITE) { 151191783Srmacklem /* Just vn_writechk() changed to check rdonly */ 152191783Srmacklem /* 153191783Srmacklem * Disallow write attempts on read-only file systems; 154191783Srmacklem * unless the file is a socket or a block or character 155191783Srmacklem * device resident on the file system. 156191783Srmacklem */ 157191783Srmacklem if (NFSVNO_EXRDONLY(exp) || 158191783Srmacklem (vp->v_mount->mnt_flag & MNT_RDONLY)) { 159191783Srmacklem switch (vp->v_type) { 160191783Srmacklem case VREG: 161191783Srmacklem case VDIR: 162191783Srmacklem case VLNK: 163191783Srmacklem return (EROFS); 164191783Srmacklem default: 165191783Srmacklem break; 166191783Srmacklem } 167191783Srmacklem } 168191783Srmacklem /* 169191783Srmacklem * If there's shared text associated with 170191783Srmacklem * the inode, try to free it up once. If 171191783Srmacklem * we fail, we can't allow writing. 172191783Srmacklem */ 173191783Srmacklem if (vp->v_vflag & VV_TEXT) 174191783Srmacklem return (ETXTBSY); 175191783Srmacklem } 176191783Srmacklem if (vpislocked == 0) 177191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 178191783Srmacklem 179191783Srmacklem#ifdef NFS4_ACL_EXTATTR_NAME 180191783Srmacklem /* 181191783Srmacklem * Should the override still be applied when ACLs are enabled? 182191783Srmacklem */ 183191783Srmacklem if (nfsrv_useacl != 0 && NFSHASNFS4ACL(vp->v_mount)) 184191783Srmacklem error = nfsrv_aclaccess(vp, accmode, accessbits, cred, p); 185191783Srmacklem else 186191783Srmacklem#endif 187191783Srmacklem if (accessbits == NFSV4ACE_READATTRIBUTES) 188191783Srmacklem error = 0; 189191783Srmacklem else 190191783Srmacklem error = VOP_ACCESS(vp, accmode, cred, p); 191191783Srmacklem 192191783Srmacklem /* 193191783Srmacklem * Allow certain operations for the owner (reads and writes 194191783Srmacklem * on files that are already open). 195191783Srmacklem */ 196191783Srmacklem if (override != NFSACCCHK_NOOVERRIDE && 197191783Srmacklem (error == EPERM || error == EACCES)) { 198191783Srmacklem if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 199191783Srmacklem error = 0; 200191783Srmacklem else if (override & NFSACCCHK_ALLOWOWNER) { 201191783Srmacklem getret = VOP_GETATTR(vp, &vattr, cred); 202191783Srmacklem if (getret == 0 && cred->cr_uid == vattr.va_uid) 203191783Srmacklem error = 0; 204191783Srmacklem } 205191783Srmacklem } 206191783Srmacklem if (vpislocked == 0) 207191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 208191783Srmacklem return (error); 209191783Srmacklem} 210191783Srmacklem 211191783Srmacklem/* 212191783Srmacklem * Set attribute(s) vnop. 213191783Srmacklem */ 214191783Srmacklemint 215191783Srmacklemnfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 216191783Srmacklem struct thread *p, struct nfsexstuff *exp) 217191783Srmacklem{ 218191783Srmacklem int error; 219191783Srmacklem 220191783Srmacklem error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 221191783Srmacklem return (error); 222191783Srmacklem} 223191783Srmacklem 224191783Srmacklem/* 225191783Srmacklem * Set up nameidata for a lookup() call and do it 226191783Srmacklem * For the cases where we are crossing mount points 227191783Srmacklem * (looking up the public fh path or the v4 root path when 228191783Srmacklem * not using a pseudo-root fs), set/release the Giant lock, 229191783Srmacklem * as required. 230191783Srmacklem */ 231191783Srmacklemint 232191783Srmacklemnfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 233191783Srmacklem struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p, 234191783Srmacklem struct vnode **retdirp) 235191783Srmacklem{ 236191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 237191783Srmacklem int i; 238191783Srmacklem struct iovec aiov; 239191783Srmacklem struct uio auio; 240191783Srmacklem int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 241191783Srmacklem int error = 0, crossmnt; 242191783Srmacklem char *cp; 243191783Srmacklem 244191783Srmacklem *retdirp = NULL; 245191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 246191783Srmacklem /* 247191783Srmacklem * Extract and set starting directory. 248191783Srmacklem */ 249191783Srmacklem if (dp->v_type != VDIR) { 250191783Srmacklem if (islocked) 251191783Srmacklem vput(dp); 252191783Srmacklem else 253191783Srmacklem vrele(dp); 254191783Srmacklem nfsvno_relpathbuf(ndp); 255191783Srmacklem return (ENOTDIR); 256191783Srmacklem } 257191783Srmacklem if (islocked) 258191783Srmacklem NFSVOPUNLOCK(dp, 0, p); 259191783Srmacklem VREF(dp); 260191783Srmacklem *retdirp = dp; 261191783Srmacklem if (NFSVNO_EXRDONLY(exp)) 262191783Srmacklem cnp->cn_flags |= RDONLY; 263191783Srmacklem ndp->ni_segflg = UIO_SYSSPACE; 264191783Srmacklem crossmnt = 1; 265191783Srmacklem 266191783Srmacklem if (nd->nd_flag & ND_PUBLOOKUP) { 267191783Srmacklem ndp->ni_loopcnt = 0; 268191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 269191783Srmacklem vrele(dp); 270191783Srmacklem /* 271191783Srmacklem * Check for degenerate pathnames here, since lookup() 272191783Srmacklem * panics on them. 273191783Srmacklem */ 274191783Srmacklem for (i = 1; i < ndp->ni_pathlen; i++) 275191783Srmacklem if (cnp->cn_pnbuf[i] != '/') 276191783Srmacklem break; 277191783Srmacklem if (i == ndp->ni_pathlen) { 278191783Srmacklem error = NFSERR_ACCES; 279191783Srmacklem goto out; 280191783Srmacklem } 281191783Srmacklem dp = rootvnode; 282191783Srmacklem VREF(dp); 283191783Srmacklem } 284191783Srmacklem } else if ((enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 285191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) { 286191783Srmacklem /* 287191783Srmacklem * Only cross mount points for NFSv4 when doing a 288191783Srmacklem * mount while traversing the file system above 289191783Srmacklem * the mount point, unless enable_crossmntpt is set. 290191783Srmacklem */ 291191783Srmacklem cnp->cn_flags |= NOCROSSMOUNT; 292191783Srmacklem crossmnt = 0; 293191783Srmacklem } 294191783Srmacklem 295191783Srmacklem /* 296191783Srmacklem * Initialize for scan, set ni_startdir and bump ref on dp again 297191783Srmacklem * becuase lookup() will dereference ni_startdir. 298191783Srmacklem */ 299191783Srmacklem 300191783Srmacklem cnp->cn_thread = p; 301191783Srmacklem ndp->ni_startdir = dp; 302191783Srmacklem ndp->ni_rootdir = rootvnode; 303191783Srmacklem 304191783Srmacklem if (!lockleaf) 305191783Srmacklem cnp->cn_flags |= LOCKLEAF; 306191783Srmacklem for (;;) { 307191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 308191783Srmacklem /* 309191783Srmacklem * Call lookup() to do the real work. If an error occurs, 310191783Srmacklem * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 311191783Srmacklem * we do not have to dereference anything before returning. 312191783Srmacklem * In either case ni_startdir will be dereferenced and NULLed 313191783Srmacklem * out. 314191783Srmacklem */ 315191783Srmacklem if (exp->nes_vfslocked) 316191783Srmacklem ndp->ni_cnd.cn_flags |= GIANTHELD; 317191783Srmacklem error = lookup(ndp); 318191783Srmacklem /* 319191783Srmacklem * The Giant lock should only change when 320191783Srmacklem * crossing mount points. 321191783Srmacklem */ 322191783Srmacklem if (crossmnt) { 323191783Srmacklem exp->nes_vfslocked = 324191783Srmacklem (ndp->ni_cnd.cn_flags & GIANTHELD) != 0; 325191783Srmacklem ndp->ni_cnd.cn_flags &= ~GIANTHELD; 326191783Srmacklem } 327191783Srmacklem if (error) 328191783Srmacklem break; 329191783Srmacklem 330191783Srmacklem /* 331191783Srmacklem * Check for encountering a symbolic link. Trivial 332191783Srmacklem * termination occurs if no symlink encountered. 333191783Srmacklem */ 334191783Srmacklem if ((cnp->cn_flags & ISSYMLINK) == 0) { 335191783Srmacklem if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0) 336191783Srmacklem nfsvno_relpathbuf(ndp); 337191783Srmacklem if (ndp->ni_vp && !lockleaf) 338191783Srmacklem NFSVOPUNLOCK(ndp->ni_vp, 0, p); 339191783Srmacklem break; 340191783Srmacklem } 341191783Srmacklem 342191783Srmacklem /* 343191783Srmacklem * Validate symlink 344191783Srmacklem */ 345191783Srmacklem if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 346191783Srmacklem NFSVOPUNLOCK(ndp->ni_dvp, 0, p); 347191783Srmacklem if (!(nd->nd_flag & ND_PUBLOOKUP)) { 348191783Srmacklem error = EINVAL; 349191783Srmacklem goto badlink2; 350191783Srmacklem } 351191783Srmacklem 352191783Srmacklem if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 353191783Srmacklem error = ELOOP; 354191783Srmacklem goto badlink2; 355191783Srmacklem } 356191783Srmacklem if (ndp->ni_pathlen > 1) 357191783Srmacklem cp = uma_zalloc(namei_zone, M_WAITOK); 358191783Srmacklem else 359191783Srmacklem cp = cnp->cn_pnbuf; 360191783Srmacklem aiov.iov_base = cp; 361191783Srmacklem aiov.iov_len = MAXPATHLEN; 362191783Srmacklem auio.uio_iov = &aiov; 363191783Srmacklem auio.uio_iovcnt = 1; 364191783Srmacklem auio.uio_offset = 0; 365191783Srmacklem auio.uio_rw = UIO_READ; 366191783Srmacklem auio.uio_segflg = UIO_SYSSPACE; 367191783Srmacklem auio.uio_td = NULL; 368191783Srmacklem auio.uio_resid = MAXPATHLEN; 369191783Srmacklem error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 370191783Srmacklem if (error) { 371191783Srmacklem badlink1: 372191783Srmacklem if (ndp->ni_pathlen > 1) 373191783Srmacklem uma_zfree(namei_zone, cp); 374191783Srmacklem badlink2: 375191783Srmacklem vrele(ndp->ni_dvp); 376191783Srmacklem vput(ndp->ni_vp); 377191783Srmacklem break; 378191783Srmacklem } 379191783Srmacklem linklen = MAXPATHLEN - auio.uio_resid; 380191783Srmacklem if (linklen == 0) { 381191783Srmacklem error = ENOENT; 382191783Srmacklem goto badlink1; 383191783Srmacklem } 384191783Srmacklem if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 385191783Srmacklem error = ENAMETOOLONG; 386191783Srmacklem goto badlink1; 387191783Srmacklem } 388191783Srmacklem 389191783Srmacklem /* 390191783Srmacklem * Adjust or replace path 391191783Srmacklem */ 392191783Srmacklem if (ndp->ni_pathlen > 1) { 393191783Srmacklem NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 394191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 395191783Srmacklem cnp->cn_pnbuf = cp; 396191783Srmacklem } else 397191783Srmacklem cnp->cn_pnbuf[linklen] = '\0'; 398191783Srmacklem ndp->ni_pathlen += linklen; 399191783Srmacklem 400191783Srmacklem /* 401191783Srmacklem * Cleanup refs for next loop and check if root directory 402191783Srmacklem * should replace current directory. Normally ni_dvp 403191783Srmacklem * becomes the new base directory and is cleaned up when 404191783Srmacklem * we loop. Explicitly null pointers after invalidation 405191783Srmacklem * to clarify operation. 406191783Srmacklem */ 407191783Srmacklem vput(ndp->ni_vp); 408191783Srmacklem ndp->ni_vp = NULL; 409191783Srmacklem 410191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 411191783Srmacklem vrele(ndp->ni_dvp); 412191783Srmacklem ndp->ni_dvp = ndp->ni_rootdir; 413191783Srmacklem VREF(ndp->ni_dvp); 414191783Srmacklem } 415191783Srmacklem ndp->ni_startdir = ndp->ni_dvp; 416191783Srmacklem ndp->ni_dvp = NULL; 417191783Srmacklem } 418191783Srmacklem if (!lockleaf) 419191783Srmacklem cnp->cn_flags &= ~LOCKLEAF; 420191783Srmacklem 421191783Srmacklemout: 422191783Srmacklem if (error) { 423191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 424191783Srmacklem ndp->ni_vp = NULL; 425191783Srmacklem ndp->ni_dvp = NULL; 426191783Srmacklem ndp->ni_startdir = NULL; 427191783Srmacklem cnp->cn_flags &= ~HASBUF; 428191783Srmacklem } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 429191783Srmacklem ndp->ni_dvp = NULL; 430191783Srmacklem } 431191783Srmacklem return (error); 432191783Srmacklem} 433191783Srmacklem 434191783Srmacklem/* 435191783Srmacklem * Set up a pathname buffer and return a pointer to it and, optionally 436191783Srmacklem * set a hash pointer. 437191783Srmacklem */ 438191783Srmacklemvoid 439191783Srmacklemnfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 440191783Srmacklem{ 441191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 442191783Srmacklem 443191783Srmacklem cnp->cn_flags |= (NOMACCHECK | HASBUF); 444191783Srmacklem cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 445191783Srmacklem if (hashpp != NULL) 446191783Srmacklem *hashpp = NULL; 447191783Srmacklem *bufpp = cnp->cn_pnbuf; 448191783Srmacklem} 449191783Srmacklem 450191783Srmacklem/* 451191783Srmacklem * Release the above path buffer, if not released by nfsvno_namei(). 452191783Srmacklem */ 453191783Srmacklemvoid 454191783Srmacklemnfsvno_relpathbuf(struct nameidata *ndp) 455191783Srmacklem{ 456191783Srmacklem 457191783Srmacklem if ((ndp->ni_cnd.cn_flags & HASBUF) == 0) 458191783Srmacklem panic("nfsrelpath"); 459191783Srmacklem uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 460191783Srmacklem ndp->ni_cnd.cn_flags &= ~HASBUF; 461191783Srmacklem} 462191783Srmacklem 463191783Srmacklem/* 464191783Srmacklem * Readlink vnode op into an mbuf list. 465191783Srmacklem */ 466191783Srmacklemint 467191783Srmacklemnfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p, 468191783Srmacklem struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 469191783Srmacklem{ 470191783Srmacklem struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; 471191783Srmacklem struct iovec *ivp = iv; 472191783Srmacklem struct uio io, *uiop = &io; 473191783Srmacklem struct mbuf *mp, *mp2 = NULL, *mp3 = NULL; 474191783Srmacklem int i, len, tlen, error; 475191783Srmacklem 476191783Srmacklem len = 0; 477191783Srmacklem i = 0; 478191783Srmacklem while (len < NFS_MAXPATHLEN) { 479191783Srmacklem NFSMGET(mp); 480191783Srmacklem MCLGET(mp, M_WAIT); 481191783Srmacklem mp->m_len = NFSMSIZ(mp); 482191783Srmacklem if (len == 0) { 483191783Srmacklem mp3 = mp2 = mp; 484191783Srmacklem } else { 485191783Srmacklem mp2->m_next = mp; 486191783Srmacklem mp2 = mp; 487191783Srmacklem } 488191783Srmacklem if ((len + mp->m_len) > NFS_MAXPATHLEN) { 489191783Srmacklem mp->m_len = NFS_MAXPATHLEN - len; 490191783Srmacklem len = NFS_MAXPATHLEN; 491191783Srmacklem } else { 492191783Srmacklem len += mp->m_len; 493191783Srmacklem } 494191783Srmacklem ivp->iov_base = mtod(mp, caddr_t); 495191783Srmacklem ivp->iov_len = mp->m_len; 496191783Srmacklem i++; 497191783Srmacklem ivp++; 498191783Srmacklem } 499191783Srmacklem uiop->uio_iov = iv; 500191783Srmacklem uiop->uio_iovcnt = i; 501191783Srmacklem uiop->uio_offset = 0; 502191783Srmacklem uiop->uio_resid = len; 503191783Srmacklem uiop->uio_rw = UIO_READ; 504191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 505191783Srmacklem uiop->uio_td = NULL; 506191783Srmacklem error = VOP_READLINK(vp, uiop, cred); 507191783Srmacklem if (error) { 508191783Srmacklem m_freem(mp3); 509191783Srmacklem *lenp = 0; 510191783Srmacklem return (error); 511191783Srmacklem } 512191783Srmacklem if (uiop->uio_resid > 0) { 513191783Srmacklem len -= uiop->uio_resid; 514191783Srmacklem tlen = NFSM_RNDUP(len); 515191783Srmacklem nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len); 516191783Srmacklem } 517191783Srmacklem *lenp = len; 518191783Srmacklem *mpp = mp3; 519191783Srmacklem *mpendp = mp; 520191783Srmacklem return (0); 521191783Srmacklem} 522191783Srmacklem 523191783Srmacklem/* 524191783Srmacklem * Read vnode op call into mbuf list. 525191783Srmacklem */ 526191783Srmacklemint 527191783Srmacklemnfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 528191783Srmacklem struct thread *p, struct mbuf **mpp, struct mbuf **mpendp) 529191783Srmacklem{ 530191783Srmacklem struct mbuf *m; 531191783Srmacklem int i; 532191783Srmacklem struct iovec *iv; 533191783Srmacklem struct iovec *iv2; 534191783Srmacklem int error = 0, len, left, siz, tlen, ioflag = 0, hi, try = 32; 535191783Srmacklem struct mbuf *m2 = NULL, *m3; 536191783Srmacklem struct uio io, *uiop = &io; 537191783Srmacklem struct nfsheur *nh; 538191783Srmacklem 539191783Srmacklem /* 540191783Srmacklem * Calculate seqcount for heuristic 541191783Srmacklem */ 542191783Srmacklem /* 543191783Srmacklem * Locate best candidate 544191783Srmacklem */ 545191783Srmacklem 546191783Srmacklem hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 547191783Srmacklem nh = &nfsheur[hi]; 548191783Srmacklem 549191783Srmacklem while (try--) { 550191783Srmacklem if (nfsheur[hi].nh_vp == vp) { 551191783Srmacklem nh = &nfsheur[hi]; 552191783Srmacklem break; 553191783Srmacklem } 554191783Srmacklem if (nfsheur[hi].nh_use > 0) 555191783Srmacklem --nfsheur[hi].nh_use; 556191783Srmacklem hi = (hi + 1) % NUM_HEURISTIC; 557191783Srmacklem if (nfsheur[hi].nh_use < nh->nh_use) 558191783Srmacklem nh = &nfsheur[hi]; 559191783Srmacklem } 560191783Srmacklem 561191783Srmacklem if (nh->nh_vp != vp) { 562191783Srmacklem nh->nh_vp = vp; 563191783Srmacklem nh->nh_nextr = off; 564191783Srmacklem nh->nh_use = NHUSE_INIT; 565191783Srmacklem if (off == 0) 566191783Srmacklem nh->nh_seqcount = 4; 567191783Srmacklem else 568191783Srmacklem nh->nh_seqcount = 1; 569191783Srmacklem } 570191783Srmacklem 571191783Srmacklem /* 572191783Srmacklem * Calculate heuristic 573191783Srmacklem */ 574191783Srmacklem 575191783Srmacklem if ((off == 0 && nh->nh_seqcount > 0) || off == nh->nh_nextr) { 576191783Srmacklem if (++nh->nh_seqcount > IO_SEQMAX) 577191783Srmacklem nh->nh_seqcount = IO_SEQMAX; 578191783Srmacklem } else if (nh->nh_seqcount > 1) { 579191783Srmacklem nh->nh_seqcount = 1; 580191783Srmacklem } else { 581191783Srmacklem nh->nh_seqcount = 0; 582191783Srmacklem } 583191783Srmacklem nh->nh_use += NHUSE_INC; 584191783Srmacklem if (nh->nh_use > NHUSE_MAX) 585191783Srmacklem nh->nh_use = NHUSE_MAX; 586191783Srmacklem ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 587191783Srmacklem 588191783Srmacklem len = left = NFSM_RNDUP(cnt); 589191783Srmacklem m3 = NULL; 590191783Srmacklem /* 591191783Srmacklem * Generate the mbuf list with the uio_iov ref. to it. 592191783Srmacklem */ 593191783Srmacklem i = 0; 594191783Srmacklem while (left > 0) { 595191783Srmacklem NFSMGET(m); 596191783Srmacklem MCLGET(m, M_WAIT); 597191783Srmacklem m->m_len = 0; 598191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 599191783Srmacklem left -= siz; 600191783Srmacklem i++; 601191783Srmacklem if (m3) 602191783Srmacklem m2->m_next = m; 603191783Srmacklem else 604191783Srmacklem m3 = m; 605191783Srmacklem m2 = m; 606191783Srmacklem } 607191783Srmacklem MALLOC(iv, struct iovec *, i * sizeof (struct iovec), 608191783Srmacklem M_TEMP, M_WAITOK); 609191783Srmacklem uiop->uio_iov = iv2 = iv; 610191783Srmacklem m = m3; 611191783Srmacklem left = len; 612191783Srmacklem i = 0; 613191783Srmacklem while (left > 0) { 614191783Srmacklem if (m == NULL) 615191783Srmacklem panic("nfsvno_read iov"); 616191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 617191783Srmacklem if (siz > 0) { 618191783Srmacklem iv->iov_base = mtod(m, caddr_t) + m->m_len; 619191783Srmacklem iv->iov_len = siz; 620191783Srmacklem m->m_len += siz; 621191783Srmacklem left -= siz; 622191783Srmacklem iv++; 623191783Srmacklem i++; 624191783Srmacklem } 625191783Srmacklem m = m->m_next; 626191783Srmacklem } 627191783Srmacklem uiop->uio_iovcnt = i; 628191783Srmacklem uiop->uio_offset = off; 629191783Srmacklem uiop->uio_resid = len; 630191783Srmacklem uiop->uio_rw = UIO_READ; 631191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 632191783Srmacklem error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 633191783Srmacklem FREE((caddr_t)iv2, M_TEMP); 634191783Srmacklem if (error) { 635191783Srmacklem m_freem(m3); 636191783Srmacklem *mpp = NULL; 637191783Srmacklem return (error); 638191783Srmacklem } 639191783Srmacklem tlen = len - uiop->uio_resid; 640191783Srmacklem cnt = cnt < tlen ? cnt : tlen; 641191783Srmacklem tlen = NFSM_RNDUP(cnt); 642191783Srmacklem if (tlen == 0) { 643191783Srmacklem m_freem(m3); 644191783Srmacklem m3 = NULL; 645191783Srmacklem } else if (len != tlen || tlen != cnt) 646191783Srmacklem nfsrv_adj(m3, len - tlen, tlen - cnt); 647191783Srmacklem *mpp = m3; 648191783Srmacklem *mpendp = m2; 649191783Srmacklem return (0); 650191783Srmacklem} 651191783Srmacklem 652191783Srmacklem/* 653191783Srmacklem * Write vnode op from an mbuf list. 654191783Srmacklem */ 655191783Srmacklemint 656191783Srmacklemnfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable, 657191783Srmacklem struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 658191783Srmacklem{ 659191783Srmacklem struct iovec *ivp; 660191783Srmacklem int i, len; 661191783Srmacklem struct iovec *iv; 662191783Srmacklem int ioflags, error; 663191783Srmacklem struct uio io, *uiop = &io; 664191783Srmacklem 665191783Srmacklem MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP, 666191783Srmacklem M_WAITOK); 667191783Srmacklem uiop->uio_iov = iv = ivp; 668191783Srmacklem uiop->uio_iovcnt = cnt; 669191783Srmacklem i = mtod(mp, caddr_t) + mp->m_len - cp; 670191783Srmacklem len = retlen; 671191783Srmacklem while (len > 0) { 672191783Srmacklem if (mp == NULL) 673191783Srmacklem panic("nfsvno_write"); 674191783Srmacklem if (i > 0) { 675191783Srmacklem i = min(i, len); 676191783Srmacklem ivp->iov_base = cp; 677191783Srmacklem ivp->iov_len = i; 678191783Srmacklem ivp++; 679191783Srmacklem len -= i; 680191783Srmacklem } 681191783Srmacklem mp = mp->m_next; 682191783Srmacklem if (mp) { 683191783Srmacklem i = mp->m_len; 684191783Srmacklem cp = mtod(mp, caddr_t); 685191783Srmacklem } 686191783Srmacklem } 687191783Srmacklem 688191783Srmacklem if (stable == NFSWRITE_UNSTABLE) 689191783Srmacklem ioflags = IO_NODELOCKED; 690191783Srmacklem else 691191783Srmacklem ioflags = (IO_SYNC | IO_NODELOCKED); 692191783Srmacklem uiop->uio_resid = retlen; 693191783Srmacklem uiop->uio_rw = UIO_WRITE; 694191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 695191783Srmacklem NFSUIOPROC(uiop, p); 696191783Srmacklem uiop->uio_offset = off; 697191783Srmacklem error = VOP_WRITE(vp, uiop, ioflags, cred); 698191783Srmacklem FREE((caddr_t)iv, M_TEMP); 699191783Srmacklem return (error); 700191783Srmacklem} 701191783Srmacklem 702191783Srmacklem/* 703191783Srmacklem * Common code for creating a regular file (plus special files for V2). 704191783Srmacklem */ 705191783Srmacklemint 706191783Srmacklemnfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 707191783Srmacklem struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 708191783Srmacklem u_char *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp) 709191783Srmacklem{ 710191783Srmacklem u_quad_t tempsize; 711191783Srmacklem int error; 712191783Srmacklem 713191783Srmacklem error = nd->nd_repstat; 714191783Srmacklem if (!error && ndp->ni_vp == NULL) { 715191783Srmacklem if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 716191783Srmacklem vrele(ndp->ni_startdir); 717191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, 718191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 719191783Srmacklem vput(ndp->ni_dvp); 720191783Srmacklem nfsvno_relpathbuf(ndp); 721191783Srmacklem if (!error) { 722191783Srmacklem if (*exclusive_flagp) { 723191783Srmacklem *exclusive_flagp = 0; 724191783Srmacklem NFSVNO_ATTRINIT(nvap); 725191783Srmacklem NFSBCOPY(cverf,(caddr_t)&nvap->na_atime, 726191783Srmacklem NFSX_VERF); 727191783Srmacklem error = VOP_SETATTR(ndp->ni_vp, 728191783Srmacklem &nvap->na_vattr, nd->nd_cred); 729191783Srmacklem } 730191783Srmacklem } 731191783Srmacklem /* 732191783Srmacklem * NFS V2 Only. nfsrvd_mknod() does this for V3. 733191783Srmacklem * (This implies, just get out on an error.) 734191783Srmacklem */ 735191783Srmacklem } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 736191783Srmacklem nvap->na_type == VFIFO) { 737191783Srmacklem if (nvap->na_type == VCHR && rdev == 0xffffffff) 738191783Srmacklem nvap->na_type = VFIFO; 739191783Srmacklem if (nvap->na_type != VFIFO && 740191783Srmacklem (error = priv_check_cred(nd->nd_cred, 741191783Srmacklem PRIV_VFS_MKNOD_DEV, 0))) { 742191783Srmacklem vrele(ndp->ni_startdir); 743191783Srmacklem nfsvno_relpathbuf(ndp); 744191783Srmacklem vput(ndp->ni_dvp); 745191783Srmacklem return (error); 746191783Srmacklem } 747191783Srmacklem nvap->na_rdev = rdev; 748191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 749191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 750191783Srmacklem vput(ndp->ni_dvp); 751191783Srmacklem nfsvno_relpathbuf(ndp); 752191783Srmacklem if (error) { 753191783Srmacklem vrele(ndp->ni_startdir); 754191783Srmacklem return (error); 755191783Srmacklem } 756191783Srmacklem } else { 757191783Srmacklem vrele(ndp->ni_startdir); 758191783Srmacklem nfsvno_relpathbuf(ndp); 759191783Srmacklem vput(ndp->ni_dvp); 760191783Srmacklem return (ENXIO); 761191783Srmacklem } 762191783Srmacklem *vpp = ndp->ni_vp; 763191783Srmacklem } else { 764191783Srmacklem /* 765191783Srmacklem * Handle cases where error is already set and/or 766191783Srmacklem * the file exists. 767191783Srmacklem * 1 - clean up the lookup 768191783Srmacklem * 2 - iff !error and na_size set, truncate it 769191783Srmacklem */ 770191783Srmacklem vrele(ndp->ni_startdir); 771191783Srmacklem nfsvno_relpathbuf(ndp); 772191783Srmacklem *vpp = ndp->ni_vp; 773191783Srmacklem if (ndp->ni_dvp == *vpp) 774191783Srmacklem vrele(ndp->ni_dvp); 775191783Srmacklem else 776191783Srmacklem vput(ndp->ni_dvp); 777191783Srmacklem if (!error && nvap->na_size != VNOVAL) { 778191783Srmacklem error = nfsvno_accchk(*vpp, NFSV4ACE_ADDFILE, 779191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 780191783Srmacklem NFSACCCHK_VPISLOCKED); 781191783Srmacklem if (!error) { 782191783Srmacklem tempsize = nvap->na_size; 783191783Srmacklem NFSVNO_ATTRINIT(nvap); 784191783Srmacklem nvap->na_size = tempsize; 785191783Srmacklem error = VOP_SETATTR(*vpp, 786191783Srmacklem &nvap->na_vattr, nd->nd_cred); 787191783Srmacklem } 788191783Srmacklem } 789191783Srmacklem if (error) 790191783Srmacklem vput(*vpp); 791191783Srmacklem } 792191783Srmacklem return (error); 793191783Srmacklem} 794191783Srmacklem 795191783Srmacklem/* 796191783Srmacklem * Do a mknod vnode op. 797191783Srmacklem */ 798191783Srmacklemint 799191783Srmacklemnfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, 800191783Srmacklem struct thread *p) 801191783Srmacklem{ 802191783Srmacklem int error = 0; 803191783Srmacklem enum vtype vtyp; 804191783Srmacklem 805191783Srmacklem vtyp = nvap->na_type; 806191783Srmacklem /* 807191783Srmacklem * Iff doesn't exist, create it. 808191783Srmacklem */ 809191783Srmacklem if (ndp->ni_vp) { 810191783Srmacklem vrele(ndp->ni_startdir); 811191783Srmacklem nfsvno_relpathbuf(ndp); 812191783Srmacklem vput(ndp->ni_dvp); 813191783Srmacklem vrele(ndp->ni_vp); 814191783Srmacklem return (EEXIST); 815191783Srmacklem } 816191783Srmacklem if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { 817191783Srmacklem vrele(ndp->ni_startdir); 818191783Srmacklem nfsvno_relpathbuf(ndp); 819191783Srmacklem vput(ndp->ni_dvp); 820191783Srmacklem return (NFSERR_BADTYPE); 821191783Srmacklem } 822191783Srmacklem if (vtyp == VSOCK) { 823191783Srmacklem vrele(ndp->ni_startdir); 824191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, 825191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 826191783Srmacklem vput(ndp->ni_dvp); 827191783Srmacklem nfsvno_relpathbuf(ndp); 828191783Srmacklem } else { 829191783Srmacklem if (nvap->na_type != VFIFO && 830191783Srmacklem (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) { 831191783Srmacklem vrele(ndp->ni_startdir); 832191783Srmacklem nfsvno_relpathbuf(ndp); 833191783Srmacklem vput(ndp->ni_dvp); 834191783Srmacklem return (error); 835191783Srmacklem } 836191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 837191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 838191783Srmacklem vput(ndp->ni_dvp); 839191783Srmacklem nfsvno_relpathbuf(ndp); 840191783Srmacklem if (error) 841191783Srmacklem vrele(ndp->ni_startdir); 842191783Srmacklem /* 843191783Srmacklem * Since VOP_MKNOD returns the ni_vp, I can't 844191783Srmacklem * see any reason to do the lookup. 845191783Srmacklem */ 846191783Srmacklem } 847191783Srmacklem return (error); 848191783Srmacklem} 849191783Srmacklem 850191783Srmacklem/* 851191783Srmacklem * Mkdir vnode op. 852191783Srmacklem */ 853191783Srmacklemint 854191783Srmacklemnfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, 855191783Srmacklem struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 856191783Srmacklem{ 857191783Srmacklem int error = 0; 858191783Srmacklem 859191783Srmacklem if (ndp->ni_vp != NULL) { 860191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 861191783Srmacklem vrele(ndp->ni_dvp); 862191783Srmacklem else 863191783Srmacklem vput(ndp->ni_dvp); 864191783Srmacklem vrele(ndp->ni_vp); 865191783Srmacklem return (EEXIST); 866191783Srmacklem } 867191783Srmacklem error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 868191783Srmacklem &nvap->na_vattr); 869191783Srmacklem vput(ndp->ni_dvp); 870191783Srmacklem nfsvno_relpathbuf(ndp); 871191783Srmacklem return (error); 872191783Srmacklem} 873191783Srmacklem 874191783Srmacklem/* 875191783Srmacklem * symlink vnode op. 876191783Srmacklem */ 877191783Srmacklemint 878191783Srmacklemnfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, 879191783Srmacklem int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, 880191783Srmacklem struct nfsexstuff *exp) 881191783Srmacklem{ 882191783Srmacklem int error = 0; 883191783Srmacklem 884191783Srmacklem if (ndp->ni_vp) { 885191783Srmacklem vrele(ndp->ni_startdir); 886191783Srmacklem nfsvno_relpathbuf(ndp); 887191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 888191783Srmacklem vrele(ndp->ni_dvp); 889191783Srmacklem else 890191783Srmacklem vput(ndp->ni_dvp); 891191783Srmacklem vrele(ndp->ni_vp); 892191783Srmacklem return (EEXIST); 893191783Srmacklem } 894191783Srmacklem 895191783Srmacklem error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 896191783Srmacklem &nvap->na_vattr, pathcp); 897191783Srmacklem vput(ndp->ni_dvp); 898191783Srmacklem vrele(ndp->ni_startdir); 899191783Srmacklem nfsvno_relpathbuf(ndp); 900191783Srmacklem /* 901191783Srmacklem * Although FreeBSD still had the lookup code in 902191783Srmacklem * it for 7/current, there doesn't seem to be any 903191783Srmacklem * point, since VOP_SYMLINK() returns the ni_vp. 904191783Srmacklem * Just vput it for v2. 905191783Srmacklem */ 906191783Srmacklem if (!not_v2 && !error) 907191783Srmacklem vput(ndp->ni_vp); 908191783Srmacklem return (error); 909191783Srmacklem} 910191783Srmacklem 911191783Srmacklem/* 912191783Srmacklem * Parse symbolic link arguments. 913191783Srmacklem * This function has an ugly side effect. It will MALLOC() an area for 914191783Srmacklem * the symlink and set iov_base to point to it, only if it succeeds. 915191783Srmacklem * So, if it returns with uiop->uio_iov->iov_base != NULL, that must 916191783Srmacklem * be FREE'd later. 917191783Srmacklem */ 918191783Srmacklemint 919191783Srmacklemnfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, 920191783Srmacklem struct thread *p, char **pathcpp, int *lenp) 921191783Srmacklem{ 922191783Srmacklem u_int32_t *tl; 923191783Srmacklem char *pathcp = NULL; 924191783Srmacklem int error = 0, len; 925191783Srmacklem struct nfsv2_sattr *sp; 926191783Srmacklem 927191783Srmacklem *pathcpp = NULL; 928191783Srmacklem *lenp = 0; 929191783Srmacklem if ((nd->nd_flag & ND_NFSV3) && 930191783Srmacklem (error = nfsrv_sattr(nd, nvap, NULL, NULL, p))) 931191783Srmacklem goto nfsmout; 932191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 933191783Srmacklem len = fxdr_unsigned(int, *tl); 934191783Srmacklem if (len > NFS_MAXPATHLEN || len <= 0) { 935191783Srmacklem error = EBADRPC; 936191783Srmacklem goto nfsmout; 937191783Srmacklem } 938191783Srmacklem MALLOC(pathcp, caddr_t, len + 1, M_TEMP, M_WAITOK); 939191783Srmacklem error = nfsrv_mtostr(nd, pathcp, len); 940191783Srmacklem if (error) 941191783Srmacklem goto nfsmout; 942191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 943191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 944191783Srmacklem nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); 945191783Srmacklem } 946191783Srmacklem *pathcpp = pathcp; 947191783Srmacklem *lenp = len; 948191783Srmacklem return (0); 949191783Srmacklemnfsmout: 950191783Srmacklem if (pathcp) 951191783Srmacklem free(pathcp, M_TEMP); 952191783Srmacklem return (error); 953191783Srmacklem} 954191783Srmacklem 955191783Srmacklem/* 956191783Srmacklem * Remove a non-directory object. 957191783Srmacklem */ 958191783Srmacklemint 959191783Srmacklemnfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred, 960191783Srmacklem struct thread *p, struct nfsexstuff *exp) 961191783Srmacklem{ 962191783Srmacklem struct vnode *vp; 963191783Srmacklem int error = 0; 964191783Srmacklem 965191783Srmacklem vp = ndp->ni_vp; 966191783Srmacklem if (vp->v_type == VDIR) 967191783Srmacklem error = NFSERR_ISDIR; 968191783Srmacklem else if (is_v4) 969191783Srmacklem error = nfsrv_checkremove(vp, 1, p); 970191783Srmacklem if (!error) 971191783Srmacklem error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); 972191783Srmacklem if (ndp->ni_dvp == vp) 973191783Srmacklem vrele(ndp->ni_dvp); 974191783Srmacklem else 975191783Srmacklem vput(ndp->ni_dvp); 976191783Srmacklem vput(vp); 977191783Srmacklem return (error); 978191783Srmacklem} 979191783Srmacklem 980191783Srmacklem/* 981191783Srmacklem * Remove a directory. 982191783Srmacklem */ 983191783Srmacklemint 984191783Srmacklemnfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, 985191783Srmacklem struct thread *p, struct nfsexstuff *exp) 986191783Srmacklem{ 987191783Srmacklem struct vnode *vp; 988191783Srmacklem int error = 0; 989191783Srmacklem 990191783Srmacklem vp = ndp->ni_vp; 991191783Srmacklem if (vp->v_type != VDIR) { 992191783Srmacklem error = ENOTDIR; 993191783Srmacklem goto out; 994191783Srmacklem } 995191783Srmacklem /* 996191783Srmacklem * No rmdir "." please. 997191783Srmacklem */ 998191783Srmacklem if (ndp->ni_dvp == vp) { 999191783Srmacklem error = EINVAL; 1000191783Srmacklem goto out; 1001191783Srmacklem } 1002191783Srmacklem /* 1003191783Srmacklem * The root of a mounted filesystem cannot be deleted. 1004191783Srmacklem */ 1005191783Srmacklem if (vp->v_vflag & VV_ROOT) 1006191783Srmacklem error = EBUSY; 1007191783Srmacklemout: 1008191783Srmacklem if (!error) 1009191783Srmacklem error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); 1010191783Srmacklem if (ndp->ni_dvp == vp) 1011191783Srmacklem vrele(ndp->ni_dvp); 1012191783Srmacklem else 1013191783Srmacklem vput(ndp->ni_dvp); 1014191783Srmacklem vput(vp); 1015191783Srmacklem return (error); 1016191783Srmacklem} 1017191783Srmacklem 1018191783Srmacklem/* 1019191783Srmacklem * Rename vnode op. 1020191783Srmacklem */ 1021191783Srmacklemint 1022191783Srmacklemnfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, 1023191783Srmacklem u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p) 1024191783Srmacklem{ 1025191783Srmacklem struct vnode *fvp, *tvp, *tdvp; 1026191783Srmacklem int error = 0; 1027191783Srmacklem 1028191783Srmacklem fvp = fromndp->ni_vp; 1029191783Srmacklem if (ndstat) { 1030191783Srmacklem vrele(fromndp->ni_dvp); 1031191783Srmacklem vrele(fvp); 1032191783Srmacklem error = ndstat; 1033191783Srmacklem goto out1; 1034191783Srmacklem } 1035191783Srmacklem tdvp = tondp->ni_dvp; 1036191783Srmacklem tvp = tondp->ni_vp; 1037191783Srmacklem if (tvp != NULL) { 1038191783Srmacklem if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1039191783Srmacklem error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST; 1040191783Srmacklem goto out; 1041191783Srmacklem } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1042191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST; 1043191783Srmacklem goto out; 1044191783Srmacklem } 1045191783Srmacklem if (tvp->v_type == VDIR && tvp->v_mountedhere) { 1046191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1047191783Srmacklem goto out; 1048191783Srmacklem } 1049191783Srmacklem 1050191783Srmacklem /* 1051191783Srmacklem * A rename to '.' or '..' results in a prematurely 1052191783Srmacklem * unlocked vnode on FreeBSD5, so I'm just going to fail that 1053191783Srmacklem * here. 1054191783Srmacklem */ 1055191783Srmacklem if ((tondp->ni_cnd.cn_namelen == 1 && 1056191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.') || 1057191783Srmacklem (tondp->ni_cnd.cn_namelen == 2 && 1058191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.' && 1059191783Srmacklem tondp->ni_cnd.cn_nameptr[1] == '.')) { 1060191783Srmacklem error = EINVAL; 1061191783Srmacklem goto out; 1062191783Srmacklem } 1063191783Srmacklem } 1064191783Srmacklem if (fvp->v_type == VDIR && fvp->v_mountedhere) { 1065191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1066191783Srmacklem goto out; 1067191783Srmacklem } 1068191783Srmacklem if (fvp->v_mount != tdvp->v_mount) { 1069191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1070191783Srmacklem goto out; 1071191783Srmacklem } 1072191783Srmacklem if (fvp == tdvp) { 1073191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL; 1074191783Srmacklem goto out; 1075191783Srmacklem } 1076191783Srmacklem if (fvp == tvp) { 1077191783Srmacklem /* 1078191783Srmacklem * If source and destination are the same, there is nothing to 1079191783Srmacklem * do. Set error to -1 to indicate this. 1080191783Srmacklem */ 1081191783Srmacklem error = -1; 1082191783Srmacklem goto out; 1083191783Srmacklem } 1084191783Srmacklem if (ndflag & ND_NFSV4) { 1085191783Srmacklem NFSVOPLOCK(fvp, LK_EXCLUSIVE | LK_RETRY, p); 1086191783Srmacklem error = nfsrv_checkremove(fvp, 0, p); 1087191783Srmacklem NFSVOPUNLOCK(fvp, 0, p); 1088191783Srmacklem if (tvp && !error) 1089191783Srmacklem error = nfsrv_checkremove(tvp, 1, p); 1090191783Srmacklem } else { 1091191783Srmacklem /* 1092191783Srmacklem * For NFSv2 and NFSv3, try to get rid of the delegation, so 1093191783Srmacklem * that the NFSv4 client won't be confused by the rename. 1094191783Srmacklem * Since nfsd_recalldelegation() can only be called on an 1095191783Srmacklem * unlocked vnode at this point and fvp is the file that will 1096191783Srmacklem * still exist after the rename, just do fvp. 1097191783Srmacklem */ 1098191783Srmacklem nfsd_recalldelegation(fvp, p); 1099191783Srmacklem } 1100191783Srmacklemout: 1101191783Srmacklem if (!error) { 1102191783Srmacklem error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, 1103191783Srmacklem &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, 1104191783Srmacklem &tondp->ni_cnd); 1105191783Srmacklem } else { 1106191783Srmacklem if (tdvp == tvp) 1107191783Srmacklem vrele(tdvp); 1108191783Srmacklem else 1109191783Srmacklem vput(tdvp); 1110191783Srmacklem if (tvp) 1111191783Srmacklem vput(tvp); 1112191783Srmacklem vrele(fromndp->ni_dvp); 1113191783Srmacklem vrele(fvp); 1114191783Srmacklem if (error == -1) 1115191783Srmacklem error = 0; 1116191783Srmacklem } 1117191783Srmacklem vrele(tondp->ni_startdir); 1118191783Srmacklem nfsvno_relpathbuf(tondp); 1119191783Srmacklemout1: 1120191783Srmacklem vrele(fromndp->ni_startdir); 1121191783Srmacklem nfsvno_relpathbuf(fromndp); 1122191783Srmacklem return (error); 1123191783Srmacklem} 1124191783Srmacklem 1125191783Srmacklem/* 1126191783Srmacklem * Link vnode op. 1127191783Srmacklem */ 1128191783Srmacklemint 1129191783Srmacklemnfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred, 1130191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1131191783Srmacklem{ 1132191783Srmacklem struct vnode *xp; 1133191783Srmacklem int error = 0; 1134191783Srmacklem 1135191783Srmacklem xp = ndp->ni_vp; 1136191783Srmacklem if (xp != NULL) { 1137191783Srmacklem error = EEXIST; 1138191783Srmacklem } else { 1139191783Srmacklem xp = ndp->ni_dvp; 1140191783Srmacklem if (vp->v_mount != xp->v_mount) 1141191783Srmacklem error = EXDEV; 1142191783Srmacklem } 1143191783Srmacklem if (!error) { 1144191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 1145191783Srmacklem error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); 1146191783Srmacklem if (ndp->ni_dvp == vp) 1147191783Srmacklem vrele(ndp->ni_dvp); 1148191783Srmacklem else 1149191783Srmacklem vput(ndp->ni_dvp); 1150191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 1151191783Srmacklem } else { 1152191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1153191783Srmacklem vrele(ndp->ni_dvp); 1154191783Srmacklem else 1155191783Srmacklem vput(ndp->ni_dvp); 1156191783Srmacklem if (ndp->ni_vp) 1157191783Srmacklem vrele(ndp->ni_vp); 1158191783Srmacklem } 1159191783Srmacklem nfsvno_relpathbuf(ndp); 1160191783Srmacklem return (error); 1161191783Srmacklem} 1162191783Srmacklem 1163191783Srmacklem/* 1164191783Srmacklem * Do the fsync() appropriate for the commit. 1165191783Srmacklem */ 1166191783Srmacklemint 1167191783Srmacklemnfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, 1168191783Srmacklem struct thread *td) 1169191783Srmacklem{ 1170191783Srmacklem int error = 0; 1171191783Srmacklem 1172191783Srmacklem if (cnt > MAX_COMMIT_COUNT) { 1173191783Srmacklem /* 1174191783Srmacklem * Give up and do the whole thing 1175191783Srmacklem */ 1176191783Srmacklem if (vp->v_object && 1177191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1178191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1179191783Srmacklem vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC); 1180191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1181191783Srmacklem } 1182191783Srmacklem error = VOP_FSYNC(vp, MNT_WAIT, td); 1183191783Srmacklem } else { 1184191783Srmacklem /* 1185191783Srmacklem * Locate and synchronously write any buffers that fall 1186191783Srmacklem * into the requested range. Note: we are assuming that 1187191783Srmacklem * f_iosize is a power of 2. 1188191783Srmacklem */ 1189191783Srmacklem int iosize = vp->v_mount->mnt_stat.f_iosize; 1190191783Srmacklem int iomask = iosize - 1; 1191191783Srmacklem struct bufobj *bo; 1192191783Srmacklem daddr_t lblkno; 1193191783Srmacklem 1194191783Srmacklem /* 1195191783Srmacklem * Align to iosize boundry, super-align to page boundry. 1196191783Srmacklem */ 1197191783Srmacklem if (off & iomask) { 1198191783Srmacklem cnt += off & iomask; 1199191783Srmacklem off &= ~(u_quad_t)iomask; 1200191783Srmacklem } 1201191783Srmacklem if (off & PAGE_MASK) { 1202191783Srmacklem cnt += off & PAGE_MASK; 1203191783Srmacklem off &= ~(u_quad_t)PAGE_MASK; 1204191783Srmacklem } 1205191783Srmacklem lblkno = off / iosize; 1206191783Srmacklem 1207191783Srmacklem if (vp->v_object && 1208191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1209191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1210191783Srmacklem vm_object_page_clean(vp->v_object, off / PAGE_SIZE, (cnt + PAGE_MASK) / PAGE_SIZE, OBJPC_SYNC); 1211191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1212191783Srmacklem } 1213191783Srmacklem 1214191783Srmacklem bo = &vp->v_bufobj; 1215191783Srmacklem BO_LOCK(bo); 1216191783Srmacklem while (cnt > 0) { 1217191783Srmacklem struct buf *bp; 1218191783Srmacklem 1219191783Srmacklem /* 1220191783Srmacklem * If we have a buffer and it is marked B_DELWRI we 1221191783Srmacklem * have to lock and write it. Otherwise the prior 1222191783Srmacklem * write is assumed to have already been committed. 1223191783Srmacklem * 1224191783Srmacklem * gbincore() can return invalid buffers now so we 1225191783Srmacklem * have to check that bit as well (though B_DELWRI 1226191783Srmacklem * should not be set if B_INVAL is set there could be 1227191783Srmacklem * a race here since we haven't locked the buffer). 1228191783Srmacklem */ 1229191783Srmacklem if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { 1230191783Srmacklem if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | 1231191783Srmacklem LK_INTERLOCK, BO_MTX(bo)) == ENOLCK) { 1232191783Srmacklem BO_LOCK(bo); 1233191783Srmacklem continue; /* retry */ 1234191783Srmacklem } 1235191783Srmacklem if ((bp->b_flags & (B_DELWRI|B_INVAL)) == 1236191783Srmacklem B_DELWRI) { 1237191783Srmacklem bremfree(bp); 1238191783Srmacklem bp->b_flags &= ~B_ASYNC; 1239191783Srmacklem bwrite(bp); 1240191783Srmacklem ++nfs_commit_miss; 1241191783Srmacklem } else 1242191783Srmacklem BUF_UNLOCK(bp); 1243191783Srmacklem BO_LOCK(bo); 1244191783Srmacklem } 1245191783Srmacklem ++nfs_commit_blks; 1246191783Srmacklem if (cnt < iosize) 1247191783Srmacklem break; 1248191783Srmacklem cnt -= iosize; 1249191783Srmacklem ++lblkno; 1250191783Srmacklem } 1251191783Srmacklem BO_UNLOCK(bo); 1252191783Srmacklem } 1253191783Srmacklem return (error); 1254191783Srmacklem} 1255191783Srmacklem 1256191783Srmacklem/* 1257191783Srmacklem * Statfs vnode op. 1258191783Srmacklem */ 1259191783Srmacklemint 1260191990Sattilionfsvno_statfs(struct vnode *vp, struct statfs *sf) 1261191783Srmacklem{ 1262191783Srmacklem 1263191990Sattilio return (VFS_STATFS(vp->v_mount, sf)); 1264191783Srmacklem} 1265191783Srmacklem 1266191783Srmacklem/* 1267191783Srmacklem * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1268191783Srmacklem * must handle nfsrv_opencheck() calls after any other access checks. 1269191783Srmacklem */ 1270191783Srmacklemvoid 1271191783Srmacklemnfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1272191783Srmacklem nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1273191783Srmacklem int *exclusive_flagp, struct nfsvattr *nvap, u_char *cverf, int create, 1274191783Srmacklem NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p, 1275191783Srmacklem struct nfsexstuff *exp, struct vnode **vpp) 1276191783Srmacklem{ 1277191783Srmacklem struct vnode *vp = NULL; 1278191783Srmacklem u_quad_t tempsize; 1279191783Srmacklem struct nfsexstuff nes; 1280191783Srmacklem 1281191783Srmacklem if (ndp->ni_vp == NULL) 1282191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1283191783Srmacklem stateidp, stp, NULL, nd, p, nd->nd_repstat); 1284191783Srmacklem if (!nd->nd_repstat) { 1285191783Srmacklem if (ndp->ni_vp == NULL) { 1286191783Srmacklem vrele(ndp->ni_startdir); 1287191783Srmacklem nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1288191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1289191783Srmacklem vput(ndp->ni_dvp); 1290191783Srmacklem nfsvno_relpathbuf(ndp); 1291191783Srmacklem if (!nd->nd_repstat) { 1292191783Srmacklem if (*exclusive_flagp) { 1293191783Srmacklem *exclusive_flagp = 0; 1294191783Srmacklem NFSVNO_ATTRINIT(nvap); 1295191783Srmacklem NFSBCOPY(cverf, 1296191783Srmacklem (caddr_t)&nvap->na_atime, 1297191783Srmacklem NFSX_VERF); 1298191783Srmacklem nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1299191783Srmacklem &nvap->na_vattr, cred); 1300191783Srmacklem } else { 1301191783Srmacklem nfsrv_fixattr(nd, ndp->ni_vp, nvap, 1302191783Srmacklem aclp, p, attrbitp, exp); 1303191783Srmacklem } 1304191783Srmacklem } 1305191783Srmacklem vp = ndp->ni_vp; 1306191783Srmacklem } else { 1307191783Srmacklem if (ndp->ni_startdir) 1308191783Srmacklem vrele(ndp->ni_startdir); 1309191783Srmacklem nfsvno_relpathbuf(ndp); 1310191783Srmacklem vp = ndp->ni_vp; 1311191783Srmacklem if (create == NFSV4OPEN_CREATE) { 1312191783Srmacklem if (ndp->ni_dvp == vp) 1313191783Srmacklem vrele(ndp->ni_dvp); 1314191783Srmacklem else 1315191783Srmacklem vput(ndp->ni_dvp); 1316191783Srmacklem } 1317191783Srmacklem if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 1318191783Srmacklem if (ndp->ni_cnd.cn_flags & RDONLY) 1319191783Srmacklem NFSVNO_SETEXRDONLY(&nes); 1320191783Srmacklem else 1321191783Srmacklem NFSVNO_EXINIT(&nes); 1322191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, 1323191783Srmacklem NFSV4ACE_ADDFILE, cred, &nes, p, 1324191783Srmacklem NFSACCCHK_NOOVERRIDE,NFSACCCHK_VPISLOCKED); 1325191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1326191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1327191783Srmacklem if (!nd->nd_repstat) { 1328191783Srmacklem tempsize = nvap->na_size; 1329191783Srmacklem NFSVNO_ATTRINIT(nvap); 1330191783Srmacklem nvap->na_size = tempsize; 1331191783Srmacklem nd->nd_repstat = VOP_SETATTR(vp, 1332191783Srmacklem &nvap->na_vattr, cred); 1333191783Srmacklem } 1334191783Srmacklem } else if (vp->v_type == VREG) { 1335191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1336191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1337191783Srmacklem } 1338191783Srmacklem } 1339191783Srmacklem } else { 1340191783Srmacklem if (ndp->ni_cnd.cn_flags & HASBUF) 1341191783Srmacklem nfsvno_relpathbuf(ndp); 1342191783Srmacklem if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) { 1343191783Srmacklem vrele(ndp->ni_startdir); 1344191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1345191783Srmacklem vrele(ndp->ni_dvp); 1346191783Srmacklem else 1347191783Srmacklem vput(ndp->ni_dvp); 1348191783Srmacklem if (ndp->ni_vp) 1349191783Srmacklem vput(ndp->ni_vp); 1350191783Srmacklem } 1351191783Srmacklem } 1352191783Srmacklem *vpp = vp; 1353191783Srmacklem} 1354191783Srmacklem 1355191783Srmacklem/* 1356191783Srmacklem * Updates the file rev and sets the mtime and ctime 1357191783Srmacklem * to the current clock time, returning the va_filerev and va_Xtime 1358191783Srmacklem * values. 1359191783Srmacklem */ 1360191783Srmacklemvoid 1361191783Srmacklemnfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 1362191783Srmacklem struct ucred *cred, struct thread *p) 1363191783Srmacklem{ 1364191783Srmacklem struct vattr va; 1365191783Srmacklem 1366191783Srmacklem VATTR_NULL(&va); 1367191783Srmacklem getnanotime(&va.va_mtime); 1368191783Srmacklem (void) VOP_SETATTR(vp, &va, cred); 1369191783Srmacklem (void) nfsvno_getattr(vp, nvap, cred, p); 1370191783Srmacklem} 1371191783Srmacklem 1372191783Srmacklem/* 1373191783Srmacklem * Glue routine to nfsv4_fillattr(). 1374191783Srmacklem */ 1375191783Srmacklemint 1376191783Srmacklemnfsvno_fillattr(struct nfsrv_descript *nd, struct vnode *vp, 1377191783Srmacklem struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 1378191783Srmacklem struct ucred *cred, struct thread *p, int isdgram, int reterr) 1379191783Srmacklem{ 1380191783Srmacklem int error; 1381191783Srmacklem 1382191783Srmacklem error = nfsv4_fillattr(nd, vp, NULL, &nvap->na_vattr, fhp, rderror, 1383191783Srmacklem attrbitp, cred, p, isdgram, reterr); 1384191783Srmacklem return (error); 1385191783Srmacklem} 1386191783Srmacklem 1387191783Srmacklem/* Since the Readdir vnode ops vary, put the entire functions in here. */ 1388191783Srmacklem/* 1389191783Srmacklem * nfs readdir service 1390191783Srmacklem * - mallocs what it thinks is enough to read 1391191783Srmacklem * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 1392191783Srmacklem * - calls nfsvno_readdir() 1393191783Srmacklem * - loops around building the reply 1394191783Srmacklem * if the output generated exceeds count break out of loop 1395191783Srmacklem * The NFSM_CLGET macro is used here so that the reply will be packed 1396191783Srmacklem * tightly in mbuf clusters. 1397191783Srmacklem * - it only knows that it has encountered eof when the nfsvno_readdir() 1398191783Srmacklem * reads nothing 1399191783Srmacklem * - as such one readdir rpc will return eof false although you are there 1400191783Srmacklem * and then the next will return eof 1401191783Srmacklem * - it trims out records with d_fileno == 0 1402191783Srmacklem * this doesn't matter for Unix clients, but they might confuse clients 1403191783Srmacklem * for other os'. 1404191783Srmacklem * - it trims out records with d_type == DT_WHT 1405191783Srmacklem * these cannot be seen through NFS (unless we extend the protocol) 1406191783Srmacklem * NB: It is tempting to set eof to true if the nfsvno_readdir() reads less 1407191783Srmacklem * than requested, but this may not apply to all filesystems. For 1408191783Srmacklem * example, client NFS does not { although it is never remote mounted 1409191783Srmacklem * anyhow } 1410191783Srmacklem * The alternate call nfsrvd_readdirplus() does lookups as well. 1411191783Srmacklem * PS: The NFS protocol spec. does not clarify what the "count" byte 1412191783Srmacklem * argument is a count of.. just name strings and file id's or the 1413191783Srmacklem * entire reply rpc or ... 1414191783Srmacklem * I tried just file name and id sizes and it confused the Sun client, 1415191783Srmacklem * so I am using the full rpc size now. The "paranoia.." comment refers 1416191783Srmacklem * to including the status longwords that are not a part of the dir. 1417191783Srmacklem * "entry" structures, but are in the rpc. 1418191783Srmacklem */ 1419191783Srmacklemint 1420191783Srmacklemnfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 1421191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1422191783Srmacklem{ 1423191783Srmacklem struct dirent *dp; 1424191783Srmacklem u_int32_t *tl; 1425191783Srmacklem int dirlen; 1426191783Srmacklem char *cpos, *cend, *rbuf; 1427191783Srmacklem struct nfsvattr at; 1428191783Srmacklem int nlen, error = 0, getret = 1; 1429191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies; 1430191783Srmacklem u_int64_t off, toff, verf; 1431191783Srmacklem u_long *cookies = NULL, *cookiep; 1432191783Srmacklem struct uio io; 1433191783Srmacklem struct iovec iv; 1434191783Srmacklem 1435191783Srmacklem if (nd->nd_repstat) { 1436191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1437191783Srmacklem return (0); 1438191783Srmacklem } 1439191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1440191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1441191783Srmacklem off = fxdr_unsigned(u_quad_t, *tl++); 1442191783Srmacklem } else { 1443191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1444191783Srmacklem off = fxdr_hyper(tl); 1445191783Srmacklem tl += 2; 1446191783Srmacklem verf = fxdr_hyper(tl); 1447191783Srmacklem tl += 2; 1448191783Srmacklem } 1449191783Srmacklem toff = off; 1450191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1451191783Srmacklem if (cnt > NFS_SRVMAXDATA(nd)) 1452191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1453191783Srmacklem siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1454191783Srmacklem fullsiz = siz; 1455191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1456191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, 1457191783Srmacklem p); 1458191783Srmacklem#if 0 1459191783Srmacklem /* 1460191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1461191783Srmacklem * since it is not supposed to change when entries are 1462191783Srmacklem * removed/added unless that offset cookies returned to 1463191783Srmacklem * the client are no longer valid. 1464191783Srmacklem */ 1465191783Srmacklem if (!nd->nd_repstat && toff && verf != at.na_filerev) 1466191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1467191783Srmacklem#endif 1468191783Srmacklem } 1469191783Srmacklem if (!nd->nd_repstat) 1470191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, NFSV4ACE_SEARCH, 1471191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1472191783Srmacklem NFSACCCHK_VPISLOCKED); 1473191783Srmacklem if (nd->nd_repstat) { 1474191783Srmacklem vput(vp); 1475191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1476191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1477191783Srmacklem return (0); 1478191783Srmacklem } 1479191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 1480191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1481191783Srmacklemagain: 1482191783Srmacklem eofflag = 0; 1483191783Srmacklem if (cookies) { 1484191783Srmacklem free((caddr_t)cookies, M_TEMP); 1485191783Srmacklem cookies = NULL; 1486191783Srmacklem } 1487191783Srmacklem 1488191783Srmacklem iv.iov_base = rbuf; 1489191783Srmacklem iv.iov_len = siz; 1490191783Srmacklem io.uio_iov = &iv; 1491191783Srmacklem io.uio_iovcnt = 1; 1492191783Srmacklem io.uio_offset = (off_t)off; 1493191783Srmacklem io.uio_resid = siz; 1494191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1495191783Srmacklem io.uio_rw = UIO_READ; 1496191783Srmacklem io.uio_td = NULL; 1497191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 1498191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1499191783Srmacklem &cookies); 1500191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 1501191783Srmacklem off = (u_int64_t)io.uio_offset; 1502191783Srmacklem if (io.uio_resid) 1503191783Srmacklem siz -= io.uio_resid; 1504191783Srmacklem 1505191783Srmacklem if (!cookies && !nd->nd_repstat) 1506191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1507191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1508191783Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p); 1509191783Srmacklem if (!nd->nd_repstat) 1510191783Srmacklem nd->nd_repstat = getret; 1511191783Srmacklem } 1512191783Srmacklem 1513191783Srmacklem /* 1514191783Srmacklem * Handles the failed cases. nd->nd_repstat == 0 past here. 1515191783Srmacklem */ 1516191783Srmacklem if (nd->nd_repstat) { 1517191783Srmacklem vrele(vp); 1518191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1519191783Srmacklem if (cookies) 1520191783Srmacklem free((caddr_t)cookies, M_TEMP); 1521191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1522191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1523191783Srmacklem return (0); 1524191783Srmacklem } 1525191783Srmacklem /* 1526191783Srmacklem * If nothing read, return eof 1527191783Srmacklem * rpc reply 1528191783Srmacklem */ 1529191783Srmacklem if (siz == 0) { 1530191783Srmacklem vrele(vp); 1531191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1532191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1533191783Srmacklem } else { 1534191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1535191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1536191783Srmacklem txdr_hyper(at.na_filerev, tl); 1537191783Srmacklem tl += 2; 1538191783Srmacklem } 1539191783Srmacklem *tl++ = newnfs_false; 1540191783Srmacklem *tl = newnfs_true; 1541191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1542191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1543191783Srmacklem return (0); 1544191783Srmacklem } 1545191783Srmacklem 1546191783Srmacklem /* 1547191783Srmacklem * Check for degenerate cases of nothing useful read. 1548191783Srmacklem * If so go try again 1549191783Srmacklem */ 1550191783Srmacklem cpos = rbuf; 1551191783Srmacklem cend = rbuf + siz; 1552191783Srmacklem dp = (struct dirent *)cpos; 1553191783Srmacklem cookiep = cookies; 1554191783Srmacklem 1555191783Srmacklem /* 1556191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1557191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1558191783Srmacklem * skip over the records that precede the requested offset. This 1559191783Srmacklem * requires the assumption that file offset cookies monotonically 1560191783Srmacklem * increase. 1561191783Srmacklem */ 1562191783Srmacklem while (cpos < cend && ncookies > 0 && 1563191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1564191783Srmacklem ((u_quad_t)(*cookiep)) <= toff)) { 1565191783Srmacklem cpos += dp->d_reclen; 1566191783Srmacklem dp = (struct dirent *)cpos; 1567191783Srmacklem cookiep++; 1568191783Srmacklem ncookies--; 1569191783Srmacklem } 1570191783Srmacklem if (cpos >= cend || ncookies == 0) { 1571191783Srmacklem siz = fullsiz; 1572191783Srmacklem toff = off; 1573191783Srmacklem goto again; 1574191783Srmacklem } 1575191783Srmacklem 1576191783Srmacklem /* 1577191783Srmacklem * dirlen is the size of the reply, including all XDR and must 1578191783Srmacklem * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 1579191783Srmacklem * if the XDR should be included in "count", but to be safe, we do. 1580191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now.) 1581191783Srmacklem */ 1582191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1583191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1584191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1585191783Srmacklem txdr_hyper(at.na_filerev, tl); 1586191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1587191783Srmacklem } else { 1588191783Srmacklem dirlen = 2 * NFSX_UNSIGNED; 1589191783Srmacklem } 1590191783Srmacklem 1591191783Srmacklem /* Loop through the records and build reply */ 1592191783Srmacklem while (cpos < cend && ncookies > 0) { 1593191783Srmacklem nlen = dp->d_namlen; 1594191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1595191783Srmacklem nlen <= NFS_MAXNAMLEN) { 1596191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1597191783Srmacklem dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1598191783Srmacklem else 1599191783Srmacklem dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1600191783Srmacklem if (dirlen > cnt) { 1601191783Srmacklem eofflag = 0; 1602191783Srmacklem break; 1603191783Srmacklem } 1604191783Srmacklem 1605191783Srmacklem /* 1606191783Srmacklem * Build the directory record xdr from 1607191783Srmacklem * the dirent entry. 1608191783Srmacklem */ 1609191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1610191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1611191783Srmacklem *tl++ = newnfs_true; 1612191783Srmacklem *tl++ = 0; 1613191783Srmacklem } else { 1614191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1615191783Srmacklem *tl++ = newnfs_true; 1616191783Srmacklem } 1617191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1618191783Srmacklem (void) nfsm_strtom(nd, dp->d_name, nlen); 1619191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1620191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1621191783Srmacklem *tl++ = 0; 1622191783Srmacklem } else 1623191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1624191783Srmacklem *tl = txdr_unsigned(*cookiep); 1625191783Srmacklem } 1626191783Srmacklem cpos += dp->d_reclen; 1627191783Srmacklem dp = (struct dirent *)cpos; 1628191783Srmacklem cookiep++; 1629191783Srmacklem ncookies--; 1630191783Srmacklem } 1631191783Srmacklem if (cpos < cend) 1632191783Srmacklem eofflag = 0; 1633191783Srmacklem vrele(vp); 1634191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1635191783Srmacklem *tl++ = newnfs_false; 1636191783Srmacklem if (eofflag) 1637191783Srmacklem *tl = newnfs_true; 1638191783Srmacklem else 1639191783Srmacklem *tl = newnfs_false; 1640191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1641191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1642191783Srmacklem return (0); 1643191783Srmacklemnfsmout: 1644191783Srmacklem vput(vp); 1645191783Srmacklem return (error); 1646191783Srmacklem} 1647191783Srmacklem 1648191783Srmacklem/* 1649191783Srmacklem * Readdirplus for V3 and Readdir for V4. 1650191783Srmacklem */ 1651191783Srmacklemint 1652191783Srmacklemnfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 1653191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1654191783Srmacklem{ 1655191783Srmacklem struct dirent *dp; 1656191783Srmacklem u_int32_t *tl; 1657191783Srmacklem int dirlen; 1658191783Srmacklem char *cpos, *cend, *rbuf; 1659191783Srmacklem struct vnode *nvp; 1660191783Srmacklem fhandle_t nfh; 1661191783Srmacklem struct nfsvattr nva, at, *nvap = &nva; 1662191783Srmacklem struct mbuf *mb0, *mb1; 1663191783Srmacklem struct nfsreferral *refp; 1664191783Srmacklem int nlen, r, error = 0, getret = 1, vgetret; 1665191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 1666191783Srmacklem caddr_t bpos0, bpos1; 1667191783Srmacklem u_int64_t off, toff, verf; 1668191783Srmacklem u_long *cookies = NULL, *cookiep; 1669191783Srmacklem nfsattrbit_t attrbits, rderrbits, savbits; 1670191783Srmacklem struct uio io; 1671191783Srmacklem struct iovec iv; 1672191783Srmacklem 1673191783Srmacklem if (nd->nd_repstat) { 1674191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1675191783Srmacklem return (0); 1676191783Srmacklem } 1677191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 1678191783Srmacklem off = fxdr_hyper(tl); 1679191783Srmacklem toff = off; 1680191783Srmacklem tl += 2; 1681191783Srmacklem verf = fxdr_hyper(tl); 1682191783Srmacklem tl += 2; 1683191783Srmacklem siz = fxdr_unsigned(int, *tl++); 1684191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1685191783Srmacklem 1686191783Srmacklem /* 1687191783Srmacklem * Use the server's maximum data transfer size as the upper bound 1688191783Srmacklem * on reply datalen. 1689191783Srmacklem */ 1690191783Srmacklem if (cnt > NFS_SRVMAXDATA(nd)) 1691191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1692191783Srmacklem 1693191783Srmacklem /* 1694191783Srmacklem * siz is a "hint" of how much directory information (name, fileid, 1695191783Srmacklem * cookie) should be in the reply. At least one client "hints" 0, 1696191783Srmacklem * so I set it to cnt for that case. I also round it up to the 1697191783Srmacklem * next multiple of DIRBLKSIZ. 1698191783Srmacklem */ 1699191783Srmacklem if (siz == 0) 1700191783Srmacklem siz = cnt; 1701191783Srmacklem siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1702191783Srmacklem 1703191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1704191783Srmacklem error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1705191783Srmacklem if (error) 1706191783Srmacklem goto nfsmout; 1707191783Srmacklem NFSSET_ATTRBIT(&savbits, &attrbits); 1708191783Srmacklem NFSCLRNOTFILLABLE_ATTRBIT(&attrbits); 1709191783Srmacklem NFSZERO_ATTRBIT(&rderrbits); 1710191783Srmacklem NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 1711191783Srmacklem } else { 1712191783Srmacklem NFSZERO_ATTRBIT(&attrbits); 1713191783Srmacklem } 1714191783Srmacklem fullsiz = siz; 1715191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p); 1716191783Srmacklem if (!nd->nd_repstat) { 1717191783Srmacklem if (off && verf != at.na_filerev) { 1718191783Srmacklem /* 1719191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1720191783Srmacklem * since it is not supposed to change when entries are 1721191783Srmacklem * removed/added unless that offset cookies returned to 1722191783Srmacklem * the client are no longer valid. 1723191783Srmacklem */ 1724191783Srmacklem#if 0 1725191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1726191783Srmacklem nd->nd_repstat = NFSERR_NOTSAME; 1727191783Srmacklem } else { 1728191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1729191783Srmacklem } 1730191783Srmacklem#endif 1731191783Srmacklem } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) { 1732191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1733191783Srmacklem } 1734191783Srmacklem } 1735191783Srmacklem if (!nd->nd_repstat && vp->v_type != VDIR) 1736191783Srmacklem nd->nd_repstat = NFSERR_NOTDIR; 1737191783Srmacklem if (!nd->nd_repstat && cnt == 0) 1738191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1739191783Srmacklem if (!nd->nd_repstat) 1740191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, NFSV4ACE_SEARCH, 1741191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1742191783Srmacklem NFSACCCHK_VPISLOCKED); 1743191783Srmacklem if (nd->nd_repstat) { 1744191783Srmacklem vput(vp); 1745191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1746191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1747191783Srmacklem return (0); 1748191783Srmacklem } 1749191783Srmacklem 1750191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 1751191783Srmacklem 1752191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1753191783Srmacklemagain: 1754191783Srmacklem eofflag = 0; 1755191783Srmacklem if (cookies) { 1756191783Srmacklem free((caddr_t)cookies, M_TEMP); 1757191783Srmacklem cookies = NULL; 1758191783Srmacklem } 1759191783Srmacklem 1760191783Srmacklem iv.iov_base = rbuf; 1761191783Srmacklem iv.iov_len = siz; 1762191783Srmacklem io.uio_iov = &iv; 1763191783Srmacklem io.uio_iovcnt = 1; 1764191783Srmacklem io.uio_offset = (off_t)off; 1765191783Srmacklem io.uio_resid = siz; 1766191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1767191783Srmacklem io.uio_rw = UIO_READ; 1768191783Srmacklem io.uio_td = NULL; 1769191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 1770191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1771191783Srmacklem &cookies); 1772191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 1773191783Srmacklem off = (u_int64_t)io.uio_offset; 1774191783Srmacklem if (io.uio_resid) 1775191783Srmacklem siz -= io.uio_resid; 1776191783Srmacklem 1777191783Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p); 1778191783Srmacklem 1779191783Srmacklem if (!cookies && !nd->nd_repstat) 1780191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1781191783Srmacklem if (!nd->nd_repstat) 1782191783Srmacklem nd->nd_repstat = getret; 1783191783Srmacklem if (nd->nd_repstat) { 1784191783Srmacklem vrele(vp); 1785191783Srmacklem if (cookies) 1786191783Srmacklem free((caddr_t)cookies, M_TEMP); 1787191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1788191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1789191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1790191783Srmacklem return (0); 1791191783Srmacklem } 1792191783Srmacklem /* 1793191783Srmacklem * If nothing read, return eof 1794191783Srmacklem * rpc reply 1795191783Srmacklem */ 1796191783Srmacklem if (siz == 0) { 1797191783Srmacklem vrele(vp); 1798191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1799191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1800191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1801191783Srmacklem txdr_hyper(at.na_filerev, tl); 1802191783Srmacklem tl += 2; 1803191783Srmacklem *tl++ = newnfs_false; 1804191783Srmacklem *tl = newnfs_true; 1805191783Srmacklem free((caddr_t)cookies, M_TEMP); 1806191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1807191783Srmacklem return (0); 1808191783Srmacklem } 1809191783Srmacklem 1810191783Srmacklem /* 1811191783Srmacklem * Check for degenerate cases of nothing useful read. 1812191783Srmacklem * If so go try again 1813191783Srmacklem */ 1814191783Srmacklem cpos = rbuf; 1815191783Srmacklem cend = rbuf + siz; 1816191783Srmacklem dp = (struct dirent *)cpos; 1817191783Srmacklem cookiep = cookies; 1818191783Srmacklem 1819191783Srmacklem /* 1820191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1821191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1822191783Srmacklem * skip over the records that precede the requested offset. This 1823191783Srmacklem * requires the assumption that file offset cookies monotonically 1824191783Srmacklem * increase. 1825191783Srmacklem */ 1826191783Srmacklem while (cpos < cend && ncookies > 0 && 1827191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1828191783Srmacklem ((u_quad_t)(*cookiep)) <= toff || 1829191783Srmacklem ((nd->nd_flag & ND_NFSV4) && 1830191783Srmacklem ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 1831191783Srmacklem (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 1832191783Srmacklem cpos += dp->d_reclen; 1833191783Srmacklem dp = (struct dirent *)cpos; 1834191783Srmacklem cookiep++; 1835191783Srmacklem ncookies--; 1836191783Srmacklem } 1837191783Srmacklem if (cpos >= cend || ncookies == 0) { 1838191783Srmacklem siz = fullsiz; 1839191783Srmacklem toff = off; 1840191783Srmacklem goto again; 1841191783Srmacklem } 1842191783Srmacklem 1843191783Srmacklem /* 1844191783Srmacklem * Probe one of the directory entries to see if the filesystem 1845191783Srmacklem * supports VGET for NFSv3. For NFSv4, it will return an 1846191783Srmacklem * error later, if attributes are required. 1847191783Srmacklem * (To be honest, most if not all NFSv4 clients will require 1848191783Srmacklem * attributes, but??) 1849191783Srmacklem */ 1850191783Srmacklem if ((nd->nd_flag & ND_NFSV3)) { 1851191783Srmacklem vgetret = VFS_VGET(vp->v_mount, dp->d_fileno, LK_EXCLUSIVE, 1852191783Srmacklem &nvp); 1853191783Srmacklem if (vgetret != 0) { 1854191783Srmacklem if (vgetret == EOPNOTSUPP) 1855191783Srmacklem nd->nd_repstat = NFSERR_NOTSUPP; 1856191783Srmacklem else 1857191783Srmacklem nd->nd_repstat = NFSERR_SERVERFAULT; 1858191783Srmacklem vrele(vp); 1859191783Srmacklem if (cookies) 1860191783Srmacklem free((caddr_t)cookies, M_TEMP); 1861191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1862191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1863191783Srmacklem return (0); 1864191783Srmacklem } 1865191783Srmacklem if (!vgetret) 1866191783Srmacklem vput(nvp); 1867191783Srmacklem nvp = NULL; 1868191783Srmacklem } 1869191783Srmacklem 1870191783Srmacklem /* 1871191783Srmacklem * Save this position, in case there is an error before one entry 1872191783Srmacklem * is created. 1873191783Srmacklem */ 1874191783Srmacklem mb0 = nd->nd_mb; 1875191783Srmacklem bpos0 = nd->nd_bpos; 1876191783Srmacklem 1877191783Srmacklem /* 1878191783Srmacklem * Fill in the first part of the reply. 1879191783Srmacklem * dirlen is the reply length in bytes and cannot exceed cnt. 1880191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now, 1881191783Srmacklem * so we recognize when we have exceeded cnt.) 1882191783Srmacklem */ 1883191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1884191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1885191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1886191783Srmacklem } else { 1887191783Srmacklem dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 1888191783Srmacklem } 1889191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1890191783Srmacklem txdr_hyper(at.na_filerev, tl); 1891191783Srmacklem 1892191783Srmacklem /* 1893191783Srmacklem * Save this position, in case there is an empty reply needed. 1894191783Srmacklem */ 1895191783Srmacklem mb1 = nd->nd_mb; 1896191783Srmacklem bpos1 = nd->nd_bpos; 1897191783Srmacklem 1898191783Srmacklem /* Loop through the records and build reply */ 1899191783Srmacklem entrycnt = 0; 1900191783Srmacklem while (cpos < cend && ncookies > 0 && dirlen < cnt) { 1901191783Srmacklem nlen = dp->d_namlen; 1902191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1903191783Srmacklem nlen <= NFS_MAXNAMLEN && 1904191783Srmacklem ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 1905191783Srmacklem (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 1906191783Srmacklem || (nlen == 1 && dp->d_name[0] != '.'))) { 1907191783Srmacklem /* 1908191783Srmacklem * Save the current position in the reply, in case 1909191783Srmacklem * this entry exceeds cnt. 1910191783Srmacklem */ 1911191783Srmacklem mb1 = nd->nd_mb; 1912191783Srmacklem bpos1 = nd->nd_bpos; 1913191783Srmacklem 1914191783Srmacklem /* 1915191783Srmacklem * For readdir_and_lookup get the vnode using 1916191783Srmacklem * the file number. 1917191783Srmacklem */ 1918191783Srmacklem nvp = NULL; 1919191783Srmacklem refp = NULL; 1920191783Srmacklem r = 0; 1921191783Srmacklem if ((nd->nd_flag & ND_NFSV3) || 1922191783Srmacklem NFSNONZERO_ATTRBIT(&savbits)) { 1923191783Srmacklem if (nd->nd_flag & ND_NFSV4) 1924191783Srmacklem refp = nfsv4root_getreferral(NULL, 1925191783Srmacklem vp, dp->d_fileno); 1926191783Srmacklem if (refp == NULL) 1927191783Srmacklem r = VFS_VGET(vp->v_mount, dp->d_fileno, 1928191783Srmacklem LK_EXCLUSIVE, &nvp); 1929191783Srmacklem if (!r) { 1930191783Srmacklem if (refp == NULL && 1931191783Srmacklem ((nd->nd_flag & ND_NFSV3) || 1932191783Srmacklem NFSNONZERO_ATTRBIT(&attrbits))) { 1933191783Srmacklem r = nfsvno_getfh(nvp, &nfh, p); 1934191783Srmacklem if (!r) 1935191783Srmacklem r = nfsvno_getattr(nvp, nvap, 1936191783Srmacklem nd->nd_cred, p); 1937191783Srmacklem } 1938191783Srmacklem } else { 1939191783Srmacklem nvp = NULL; 1940191783Srmacklem } 1941191783Srmacklem if (r) { 1942191783Srmacklem if (!NFSISSET_ATTRBIT(&attrbits, 1943191783Srmacklem NFSATTRBIT_RDATTRERROR)) { 1944191783Srmacklem if (nvp != NULL) 1945191783Srmacklem vput(nvp); 1946191783Srmacklem nd->nd_repstat = r; 1947191783Srmacklem break; 1948191783Srmacklem } 1949191783Srmacklem } 1950191783Srmacklem } 1951191783Srmacklem 1952191783Srmacklem /* 1953191783Srmacklem * Build the directory record xdr 1954191783Srmacklem */ 1955191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1956191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1957191783Srmacklem *tl++ = newnfs_true; 1958191783Srmacklem *tl++ = 0; 1959191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1960191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 1961191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1962191783Srmacklem *tl++ = 0; 1963191783Srmacklem *tl = txdr_unsigned(*cookiep); 1964191783Srmacklem nfsrv_postopattr(nd, 0, nvap); 1965191783Srmacklem dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1); 1966191783Srmacklem dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 1967191783Srmacklem if (nvp != NULL) 1968191783Srmacklem vput(nvp); 1969191783Srmacklem } else { 1970191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1971191783Srmacklem *tl++ = newnfs_true; 1972191783Srmacklem *tl++ = 0; 1973191783Srmacklem *tl = txdr_unsigned(*cookiep); 1974191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 1975191783Srmacklem if (nvp != NULL) 1976191783Srmacklem NFSVOPUNLOCK(nvp, 0, p); 1977191783Srmacklem if (refp != NULL) { 1978191783Srmacklem dirlen += nfsrv_putreferralattr(nd, 1979191783Srmacklem &savbits, refp, 0, 1980191783Srmacklem &nd->nd_repstat); 1981191783Srmacklem if (nd->nd_repstat) { 1982191783Srmacklem if (nvp != NULL) 1983191783Srmacklem vrele(nvp); 1984191783Srmacklem break; 1985191783Srmacklem } 1986191783Srmacklem } else if (r) { 1987191783Srmacklem dirlen += nfsvno_fillattr(nd, nvp, nvap, 1988191783Srmacklem &nfh, r, &rderrbits, nd->nd_cred, 1989191783Srmacklem p, isdgram, 0); 1990191783Srmacklem } else { 1991191783Srmacklem dirlen += nfsvno_fillattr(nd, nvp, nvap, 1992191783Srmacklem &nfh, r, &attrbits, nd->nd_cred, 1993191783Srmacklem p, isdgram, 0); 1994191783Srmacklem } 1995191783Srmacklem if (nvp != NULL) 1996191783Srmacklem vrele(nvp); 1997191783Srmacklem dirlen += (3 * NFSX_UNSIGNED); 1998191783Srmacklem } 1999191783Srmacklem if (dirlen <= cnt) 2000191783Srmacklem entrycnt++; 2001191783Srmacklem } 2002191783Srmacklem cpos += dp->d_reclen; 2003191783Srmacklem dp = (struct dirent *)cpos; 2004191783Srmacklem cookiep++; 2005191783Srmacklem ncookies--; 2006191783Srmacklem } 2007191783Srmacklem vrele(vp); 2008191783Srmacklem 2009191783Srmacklem /* 2010191783Srmacklem * If dirlen > cnt, we must strip off the last entry. If that 2011191783Srmacklem * results in an empty reply, report NFSERR_TOOSMALL. 2012191783Srmacklem */ 2013191783Srmacklem if (dirlen > cnt || nd->nd_repstat) { 2014191783Srmacklem if (!nd->nd_repstat && entrycnt == 0) 2015191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 2016191783Srmacklem if (nd->nd_repstat) 2017191783Srmacklem newnfs_trimtrailing(nd, mb0, bpos0); 2018191783Srmacklem else 2019191783Srmacklem newnfs_trimtrailing(nd, mb1, bpos1); 2020191783Srmacklem eofflag = 0; 2021191783Srmacklem } else if (cpos < cend) 2022191783Srmacklem eofflag = 0; 2023191783Srmacklem if (!nd->nd_repstat) { 2024191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2025191783Srmacklem *tl++ = newnfs_false; 2026191783Srmacklem if (eofflag) 2027191783Srmacklem *tl = newnfs_true; 2028191783Srmacklem else 2029191783Srmacklem *tl = newnfs_false; 2030191783Srmacklem } 2031191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 2032191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 2033191783Srmacklem return (0); 2034191783Srmacklemnfsmout: 2035191783Srmacklem vput(vp); 2036191783Srmacklem return (error); 2037191783Srmacklem} 2038191783Srmacklem 2039191783Srmacklem/* 2040191783Srmacklem * Get the settable attributes out of the mbuf list. 2041191783Srmacklem * (Return 0 or EBADRPC) 2042191783Srmacklem */ 2043191783Srmacklemint 2044191783Srmacklemnfsrv_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2045191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2046191783Srmacklem{ 2047191783Srmacklem u_int32_t *tl; 2048191783Srmacklem struct nfsv2_sattr *sp; 2049191783Srmacklem struct timeval curtime; 2050191783Srmacklem int error = 0, toclient = 0; 2051191783Srmacklem 2052191783Srmacklem switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 2053191783Srmacklem case ND_NFSV2: 2054191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2055191783Srmacklem /* 2056191783Srmacklem * Some old clients didn't fill in the high order 16bits. 2057191783Srmacklem * --> check the low order 2 bytes for 0xffff 2058191783Srmacklem */ 2059191783Srmacklem if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 2060191783Srmacklem nvap->na_mode = nfstov_mode(sp->sa_mode); 2061191783Srmacklem if (sp->sa_uid != newnfs_xdrneg1) 2062191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 2063191783Srmacklem if (sp->sa_gid != newnfs_xdrneg1) 2064191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 2065191783Srmacklem if (sp->sa_size != newnfs_xdrneg1) 2066191783Srmacklem nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 2067191783Srmacklem if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 2068191783Srmacklem#ifdef notyet 2069191783Srmacklem fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 2070191783Srmacklem#else 2071191783Srmacklem nvap->na_atime.tv_sec = 2072191783Srmacklem fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 2073191783Srmacklem nvap->na_atime.tv_nsec = 0; 2074191783Srmacklem#endif 2075191783Srmacklem } 2076191783Srmacklem if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 2077191783Srmacklem fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 2078191783Srmacklem break; 2079191783Srmacklem case ND_NFSV3: 2080191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2081191783Srmacklem if (*tl == newnfs_true) { 2082191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2083191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2084191783Srmacklem } 2085191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2086191783Srmacklem if (*tl == newnfs_true) { 2087191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2088191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, *tl); 2089191783Srmacklem } 2090191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2091191783Srmacklem if (*tl == newnfs_true) { 2092191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2093191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, *tl); 2094191783Srmacklem } 2095191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2096191783Srmacklem if (*tl == newnfs_true) { 2097191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2098191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2099191783Srmacklem } 2100191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2101191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2102191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2103191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2104191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_atime); 2105191783Srmacklem toclient = 1; 2106191783Srmacklem break; 2107191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2108191783Srmacklem NFSGETTIME(&curtime); 2109191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2110191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2111191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2112191783Srmacklem break; 2113191783Srmacklem }; 2114191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2115191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2116191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2117191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2118191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_mtime); 2119191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2120191783Srmacklem break; 2121191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2122191783Srmacklem NFSGETTIME(&curtime); 2123191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2124191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2125191783Srmacklem if (!toclient) 2126191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2127191783Srmacklem break; 2128191783Srmacklem }; 2129191783Srmacklem break; 2130191783Srmacklem case ND_NFSV4: 2131191783Srmacklem error = nfsv4_sattr(nd, nvap, attrbitp, aclp, p); 2132191783Srmacklem }; 2133191783Srmacklemnfsmout: 2134191783Srmacklem return (error); 2135191783Srmacklem} 2136191783Srmacklem 2137191783Srmacklem/* 2138191783Srmacklem * Handle the setable attributes for V4. 2139191783Srmacklem * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 2140191783Srmacklem */ 2141191783Srmacklemint 2142191783Srmacklemnfsv4_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2143191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2144191783Srmacklem{ 2145191783Srmacklem u_int32_t *tl; 2146191783Srmacklem int attrsum = 0; 2147191783Srmacklem int i, j; 2148191783Srmacklem int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 2149191783Srmacklem int toclient = 0; 2150191783Srmacklem u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 2151191783Srmacklem uid_t uid; 2152191783Srmacklem gid_t gid; 2153191783Srmacklem struct timeval curtime; 2154191783Srmacklem 2155191783Srmacklem error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 2156191783Srmacklem if (error) 2157191783Srmacklem return (error); 2158191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2159191783Srmacklem attrsize = fxdr_unsigned(int, *tl); 2160191783Srmacklem 2161191783Srmacklem /* 2162191783Srmacklem * Loop around getting the setable attributes. If an unsupported 2163191783Srmacklem * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 2164191783Srmacklem */ 2165191783Srmacklem if (retnotsup) { 2166191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2167191783Srmacklem bitpos = NFSATTRBIT_MAX; 2168191783Srmacklem } else { 2169191783Srmacklem bitpos = 0; 2170191783Srmacklem } 2171191783Srmacklem for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 2172191783Srmacklem if (attrsum > attrsize) { 2173191783Srmacklem error = NFSERR_BADXDR; 2174191783Srmacklem goto nfsmout; 2175191783Srmacklem } 2176191783Srmacklem if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 2177191783Srmacklem switch (bitpos) { 2178191783Srmacklem case NFSATTRBIT_SIZE: 2179191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2180191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2181191783Srmacklem attrsum += NFSX_HYPER; 2182191783Srmacklem break; 2183191783Srmacklem case NFSATTRBIT_ACL: 2184191783Srmacklem error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize, 2185191783Srmacklem p); 2186191783Srmacklem if (error) 2187191783Srmacklem goto nfsmout; 2188191783Srmacklem if (aceerr && !nd->nd_repstat) 2189191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2190191783Srmacklem attrsum += aclsize; 2191191783Srmacklem break; 2192191783Srmacklem case NFSATTRBIT_ARCHIVE: 2193191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2194191783Srmacklem if (!nd->nd_repstat) 2195191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2196191783Srmacklem attrsum += NFSX_UNSIGNED; 2197191783Srmacklem break; 2198191783Srmacklem case NFSATTRBIT_HIDDEN: 2199191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2200191783Srmacklem if (!nd->nd_repstat) 2201191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2202191783Srmacklem attrsum += NFSX_UNSIGNED; 2203191783Srmacklem break; 2204191783Srmacklem case NFSATTRBIT_MIMETYPE: 2205191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2206191783Srmacklem i = fxdr_unsigned(int, *tl); 2207191783Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 2208191783Srmacklem if (error) 2209191783Srmacklem goto nfsmout; 2210191783Srmacklem if (!nd->nd_repstat) 2211191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2212191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 2213191783Srmacklem break; 2214191783Srmacklem case NFSATTRBIT_MODE: 2215191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2216191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2217191783Srmacklem attrsum += NFSX_UNSIGNED; 2218191783Srmacklem break; 2219191783Srmacklem case NFSATTRBIT_OWNER: 2220191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2221191783Srmacklem j = fxdr_unsigned(int, *tl); 2222191783Srmacklem if (j < 0) 2223191783Srmacklem return (NFSERR_BADXDR); 2224191783Srmacklem if (j > NFSV4_SMALLSTR) 2225191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2226191783Srmacklem else 2227191783Srmacklem cp = namestr; 2228191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2229191783Srmacklem if (error) { 2230191783Srmacklem if (j > NFSV4_SMALLSTR) 2231191783Srmacklem free(cp, M_NFSSTRING); 2232191783Srmacklem return (error); 2233191783Srmacklem } 2234191783Srmacklem if (!nd->nd_repstat) { 2235191783Srmacklem nd->nd_repstat = nfsv4_strtouid(cp,j,&uid,p); 2236191783Srmacklem if (!nd->nd_repstat) 2237191783Srmacklem nvap->na_uid = uid; 2238191783Srmacklem } 2239191783Srmacklem if (j > NFSV4_SMALLSTR) 2240191783Srmacklem free(cp, M_NFSSTRING); 2241191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2242191783Srmacklem break; 2243191783Srmacklem case NFSATTRBIT_OWNERGROUP: 2244191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2245191783Srmacklem j = fxdr_unsigned(int, *tl); 2246191783Srmacklem if (j < 0) 2247191783Srmacklem return (NFSERR_BADXDR); 2248191783Srmacklem if (j > NFSV4_SMALLSTR) 2249191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2250191783Srmacklem else 2251191783Srmacklem cp = namestr; 2252191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2253191783Srmacklem if (error) { 2254191783Srmacklem if (j > NFSV4_SMALLSTR) 2255191783Srmacklem free(cp, M_NFSSTRING); 2256191783Srmacklem return (error); 2257191783Srmacklem } 2258191783Srmacklem if (!nd->nd_repstat) { 2259191783Srmacklem nd->nd_repstat = nfsv4_strtogid(cp,j,&gid,p); 2260191783Srmacklem if (!nd->nd_repstat) 2261191783Srmacklem nvap->na_gid = gid; 2262191783Srmacklem } 2263191783Srmacklem if (j > NFSV4_SMALLSTR) 2264191783Srmacklem free(cp, M_NFSSTRING); 2265191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2266191783Srmacklem break; 2267191783Srmacklem case NFSATTRBIT_SYSTEM: 2268191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2269191783Srmacklem if (!nd->nd_repstat) 2270191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2271191783Srmacklem attrsum += NFSX_UNSIGNED; 2272191783Srmacklem break; 2273191783Srmacklem case NFSATTRBIT_TIMEACCESSSET: 2274191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2275191783Srmacklem attrsum += NFSX_UNSIGNED; 2276191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2277191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2278191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_atime); 2279191783Srmacklem toclient = 1; 2280191783Srmacklem attrsum += NFSX_V4TIME; 2281191783Srmacklem } else { 2282191783Srmacklem NFSGETTIME(&curtime); 2283191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2284191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2285191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2286191783Srmacklem } 2287191783Srmacklem break; 2288191783Srmacklem case NFSATTRBIT_TIMEBACKUP: 2289191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2290191783Srmacklem if (!nd->nd_repstat) 2291191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2292191783Srmacklem attrsum += NFSX_V4TIME; 2293191783Srmacklem break; 2294191783Srmacklem case NFSATTRBIT_TIMECREATE: 2295191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2296191783Srmacklem if (!nd->nd_repstat) 2297191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2298191783Srmacklem attrsum += NFSX_V4TIME; 2299191783Srmacklem break; 2300191783Srmacklem case NFSATTRBIT_TIMEMODIFYSET: 2301191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2302191783Srmacklem attrsum += NFSX_UNSIGNED; 2303191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2304191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2305191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_mtime); 2306191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2307191783Srmacklem attrsum += NFSX_V4TIME; 2308191783Srmacklem } else { 2309191783Srmacklem NFSGETTIME(&curtime); 2310191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2311191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2312191783Srmacklem if (!toclient) 2313191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2314191783Srmacklem } 2315191783Srmacklem break; 2316191783Srmacklem default: 2317191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2318191783Srmacklem /* 2319191783Srmacklem * set bitpos so we drop out of the loop. 2320191783Srmacklem */ 2321191783Srmacklem bitpos = NFSATTRBIT_MAX; 2322191783Srmacklem break; 2323191783Srmacklem }; 2324191783Srmacklem } 2325191783Srmacklem 2326191783Srmacklem /* 2327191783Srmacklem * some clients pad the attrlist, so we need to skip over the 2328191783Srmacklem * padding. 2329191783Srmacklem */ 2330191783Srmacklem if (attrsum > attrsize) { 2331191783Srmacklem error = NFSERR_BADXDR; 2332191783Srmacklem } else { 2333191783Srmacklem attrsize = NFSM_RNDUP(attrsize); 2334191783Srmacklem if (attrsum < attrsize) 2335191783Srmacklem error = nfsm_advance(nd, attrsize - attrsum, -1); 2336191783Srmacklem } 2337191783Srmacklemnfsmout: 2338191783Srmacklem return (error); 2339191783Srmacklem} 2340191783Srmacklem 2341191783Srmacklem/* 2342191783Srmacklem * Check/setup export credentials. 2343191783Srmacklem */ 2344191783Srmacklemint 2345191783Srmacklemnfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 2346191783Srmacklem struct ucred *credanon) 2347191783Srmacklem{ 2348191783Srmacklem int i; 2349191783Srmacklem int error = 0; 2350191783Srmacklem 2351191783Srmacklem /* 2352191783Srmacklem * Check/setup credentials. 2353191783Srmacklem */ 2354191783Srmacklem if (nd->nd_flag & ND_GSS) 2355191783Srmacklem exp->nes_exflag &= ~(MNT_EXGSSONLY | MNT_EXPORTANON); 2356191783Srmacklem 2357191783Srmacklem /* 2358191783Srmacklem * For AUTH_SYS, check to see if it is allowed. 2359191783Srmacklem * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to 2360191783Srmacklem * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 2361191783Srmacklem */ 2362191783Srmacklem if (NFSVNO_EXGSSONLY(exp) && 2363191783Srmacklem nd->nd_procnum != NFSPROC_FSINFO) { 2364191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2365191783Srmacklem error = NFSERR_WRONGSEC; 2366191783Srmacklem else 2367191783Srmacklem error = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2368191783Srmacklem return (error); 2369191783Srmacklem } 2370191783Srmacklem 2371191783Srmacklem /* 2372191783Srmacklem * Check to see if the file system is exported V4 only. 2373191783Srmacklem */ 2374191783Srmacklem if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) 2375191783Srmacklem return (NFSERR_PROGNOTV4); 2376191783Srmacklem 2377191783Srmacklem /* 2378191783Srmacklem * Now, map the user credentials. 2379191783Srmacklem * (Note that ND_AUTHNONE will only be set for an NFSv3 2380191783Srmacklem * Fsinfo RPC. If set for anything else, this code might need 2381191783Srmacklem * to change.) 2382191783Srmacklem */ 2383191783Srmacklem if (NFSVNO_EXPORTED(exp) && 2384191783Srmacklem ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) || 2385191783Srmacklem NFSVNO_EXPORTANON(exp) || 2386191783Srmacklem (nd->nd_flag & ND_AUTHNONE))) { 2387191783Srmacklem nd->nd_cred->cr_uid = credanon->cr_uid; 2388191783Srmacklem nd->nd_cred->cr_gid = credanon->cr_gid; 2389191783Srmacklem for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 2390191783Srmacklem nd->nd_cred->cr_groups[i] = credanon->cr_groups[i]; 2391191783Srmacklem nd->nd_cred->cr_ngroups = i; 2392191783Srmacklem } 2393191783Srmacklem return (0); 2394191783Srmacklem} 2395191783Srmacklem 2396191783Srmacklem/* 2397191783Srmacklem * Check exports. 2398191783Srmacklem */ 2399191783Srmacklemint 2400191783Srmacklemnfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 2401191783Srmacklem struct ucred **credp) 2402191783Srmacklem{ 2403191783Srmacklem int error; 2404191783Srmacklem int numsecflavor, *secflavors; 2405191783Srmacklem 2406191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2407191783Srmacklem &numsecflavor, &secflavors); 2408191783Srmacklem if (error && nfs_rootfhset) { 2409191783Srmacklem exp->nes_exflag = 0; 2410191783Srmacklem error = 0; 2411191783Srmacklem } 2412191783Srmacklem return (error); 2413191783Srmacklem} 2414191783Srmacklem 2415191783Srmacklem/* 2416191783Srmacklem * Get a vnode for a file handle and export stuff. 2417191783Srmacklem */ 2418191783Srmacklemint 2419191783Srmacklemnfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 2420191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, struct ucred **credp) 2421191783Srmacklem{ 2422191783Srmacklem int error; 2423191783Srmacklem int numsecflavor, *secflavors; 2424191783Srmacklem 2425191998Srmacklem *credp = NULL; 2426191783Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp); 2427191783Srmacklem if (nam && !error) { 2428191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2429191783Srmacklem &numsecflavor, &secflavors); 2430191783Srmacklem if (error) { 2431191783Srmacklem if (nfs_rootfhset) { 2432191783Srmacklem exp->nes_exflag = 0; 2433191783Srmacklem error = 0; 2434191783Srmacklem } else { 2435191783Srmacklem vput(*vpp); 2436191783Srmacklem } 2437191783Srmacklem } 2438191783Srmacklem } 2439191783Srmacklem return (error); 2440191783Srmacklem} 2441191783Srmacklem 2442191783Srmacklem/* 2443191783Srmacklem * Do the pathconf vnode op. 2444191783Srmacklem */ 2445191783Srmacklemint 2446191783Srmacklemnfsvno_pathconf(struct vnode *vp, int flag, register_t *retf, 2447191783Srmacklem struct ucred *cred, struct thread *p) 2448191783Srmacklem{ 2449191783Srmacklem int error; 2450191783Srmacklem 2451191783Srmacklem error = VOP_PATHCONF(vp, flag, retf); 2452191783Srmacklem return (error); 2453191783Srmacklem} 2454191783Srmacklem 2455191783Srmacklem/* 2456191783Srmacklem * nfsd_fhtovp() - convert a fh to a vnode ptr 2457191783Srmacklem * - look up fsid in mount list (if not found ret error) 2458191783Srmacklem * - get vp and export rights by calling nfsvno_fhtovp() 2459191783Srmacklem * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2460191783Srmacklem * for AUTH_SYS 2461191783Srmacklem * Also handle getting the Giant lock for the file system, 2462191783Srmacklem * as required: 2463191783Srmacklem * - if same mount point as *mpp 2464191783Srmacklem * do nothing 2465191783Srmacklem * else if *mpp == NULL 2466191783Srmacklem * if already locked 2467191783Srmacklem * leave it locked 2468191783Srmacklem * else 2469191783Srmacklem * call VFS_LOCK_GIANT() 2470191783Srmacklem * else 2471191783Srmacklem * if already locked 2472191783Srmacklem * unlock Giant 2473191783Srmacklem * call VFS_LOCK_GIANT() 2474191783Srmacklem */ 2475191783Srmacklemvoid 2476191783Srmacklemnfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, 2477191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, 2478191783Srmacklem struct mount **mpp, int startwrite, struct thread *p) 2479191783Srmacklem{ 2480191783Srmacklem struct mount *mp; 2481191783Srmacklem struct ucred *credanon; 2482191783Srmacklem fhandle_t *fhp; 2483191783Srmacklem 2484191783Srmacklem fhp = (fhandle_t *)nfp->nfsrvfh_data; 2485191783Srmacklem /* 2486191783Srmacklem * Check for the special case of the nfsv4root_fh. 2487191783Srmacklem */ 2488191783Srmacklem mp = vfs_getvfs(&fhp->fh_fsid); 2489191783Srmacklem if (!mp) { 2490191783Srmacklem *vpp = NULL; 2491191783Srmacklem nd->nd_repstat = ESTALE; 2492191783Srmacklem if (*mpp && exp->nes_vfslocked) 2493191783Srmacklem VFS_UNLOCK_GIANT(*mpp); 2494191783Srmacklem *mpp = NULL; 2495191783Srmacklem exp->nes_vfslocked = 0; 2496191783Srmacklem return; 2497191783Srmacklem } 2498191783Srmacklem 2499191783Srmacklem /* 2500191783Srmacklem * Now, handle Giant for the file system. 2501191783Srmacklem */ 2502191783Srmacklem if (*mpp != NULL && *mpp != mp && exp->nes_vfslocked) { 2503191783Srmacklem VFS_UNLOCK_GIANT(*mpp); 2504191783Srmacklem exp->nes_vfslocked = 0; 2505191783Srmacklem } 2506191783Srmacklem if (!exp->nes_vfslocked && *mpp != mp) 2507191783Srmacklem exp->nes_vfslocked = VFS_LOCK_GIANT(mp); 2508191783Srmacklem 2509191783Srmacklem *mpp = mp; 2510191783Srmacklem if (startwrite) 2511191783Srmacklem vn_start_write(NULL, mpp, V_WAIT); 2512191783Srmacklem 2513191783Srmacklem nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, vpp, exp, 2514191783Srmacklem &credanon); 2515191783Srmacklem 2516191783Srmacklem /* 2517191783Srmacklem * For NFSv4 without a pseudo root fs, unexported file handles 2518191783Srmacklem * can be returned, so that Lookup works everywhere. 2519191783Srmacklem */ 2520191783Srmacklem if (!nd->nd_repstat && exp->nes_exflag == 0 && 2521191783Srmacklem !(nd->nd_flag & ND_NFSV4)) { 2522191783Srmacklem vput(*vpp); 2523191783Srmacklem nd->nd_repstat = EACCES; 2524191783Srmacklem } 2525191783Srmacklem 2526191783Srmacklem /* 2527191783Srmacklem * Personally, I've never seen any point in requiring a 2528191783Srmacklem * reserved port#, since only in the rare case where the 2529191783Srmacklem * clients are all boxes with secure system priviledges, 2530191783Srmacklem * does it provide any enhanced security, but... some people 2531191783Srmacklem * believe it to be useful and keep putting this code back in. 2532191783Srmacklem * (There is also some "security checker" out there that 2533191783Srmacklem * complains if the nfs server doesn't enforce this.) 2534191783Srmacklem * However, note the following: 2535191783Srmacklem * RFC3530 (NFSv4) specifies that a reserved port# not be 2536191783Srmacklem * required. 2537191783Srmacklem * RFC2623 recommends that, if a reserved port# is checked for, 2538191783Srmacklem * that there be a way to turn that off--> ifdef'd. 2539191783Srmacklem */ 2540191783Srmacklem#ifdef NFS_REQRSVPORT 2541191783Srmacklem if (!nd->nd_repstat) { 2542191783Srmacklem struct sockaddr_in *saddr; 2543191783Srmacklem struct sockaddr_in6 *saddr6; 2544191783Srmacklem saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 2545191783Srmacklem saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 2546191783Srmacklem if (!(nd->nd_flag & ND_NFSV4) && 2547191783Srmacklem ((saddr->sin_family == AF_INET && 2548191783Srmacklem ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 2549191783Srmacklem (saddr6->sin6_family == AF_INET6 && 2550191783Srmacklem ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 2551191783Srmacklem vput(*vpp); 2552191783Srmacklem nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2553191783Srmacklem } 2554191783Srmacklem } 2555191783Srmacklem#endif /* NFS_REQRSVPORT */ 2556191783Srmacklem 2557191783Srmacklem /* 2558191783Srmacklem * Check/setup credentials. 2559191783Srmacklem */ 2560191783Srmacklem if (!nd->nd_repstat) { 2561191783Srmacklem nd->nd_saveduid = nd->nd_cred->cr_uid; 2562191783Srmacklem nd->nd_repstat = nfsd_excred(nd, exp, credanon); 2563191783Srmacklem if (nd->nd_repstat) 2564191783Srmacklem vput(*vpp); 2565191783Srmacklem } 2566191940Skan if (credanon != NULL) 2567191940Skan crfree(credanon); 2568191783Srmacklem if (nd->nd_repstat) { 2569191783Srmacklem if (startwrite) 2570191783Srmacklem vn_finished_write(mp); 2571191783Srmacklem if (exp->nes_vfslocked) { 2572191783Srmacklem VFS_UNLOCK_GIANT(mp); 2573191783Srmacklem exp->nes_vfslocked = 0; 2574191783Srmacklem } 2575191783Srmacklem vfs_rel(mp); 2576191783Srmacklem *vpp = NULL; 2577191783Srmacklem *mpp = NULL; 2578191783Srmacklem } else { 2579191783Srmacklem vfs_rel(mp); 2580191783Srmacklem } 2581191783Srmacklem} 2582191783Srmacklem 2583191783Srmacklem/* 2584191783Srmacklem * glue for fp. 2585191783Srmacklem */ 2586191783Srmacklemint 2587191783Srmacklemfp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 2588191783Srmacklem{ 2589191783Srmacklem struct filedesc *fdp; 2590191783Srmacklem struct file *fp; 2591191783Srmacklem 2592191783Srmacklem fdp = p->td_proc->p_fd; 2593191783Srmacklem if (fd >= fdp->fd_nfiles || 2594191783Srmacklem (fp = fdp->fd_ofiles[fd]) == NULL) 2595191783Srmacklem return (EBADF); 2596191783Srmacklem *fpp = fp; 2597191783Srmacklem return (0); 2598191783Srmacklem} 2599191783Srmacklem 2600191783Srmacklem/* 2601191783Srmacklem * Called from newnfssvc() to update the exports list. Just call 2602191783Srmacklem * vfs_export(). This has to be done, since the v4 root fake fs isn't 2603191783Srmacklem * in the mount list. 2604191783Srmacklem */ 2605191783Srmacklemint 2606191783Srmacklemnfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 2607191783Srmacklem{ 2608191783Srmacklem struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 2609191783Srmacklem int error; 2610191783Srmacklem struct nameidata nd; 2611191783Srmacklem fhandle_t fh; 2612191783Srmacklem 2613191783Srmacklem /* 2614191783Srmacklem * Until newmountd is using the secflavor fields, just make 2615191783Srmacklem * sure it's 0. 2616191783Srmacklem */ 2617191783Srmacklem nfsexargp->export.ex_numsecflavors = 0; 2618191783Srmacklem error = vfs_export(&nfsv4root_mnt, &nfsexargp->export); 2619191783Srmacklem if ((nfsexargp->export.ex_flags & MNT_DELEXPORT)) { 2620191783Srmacklem nfs_rootfhset = 0; 2621191783Srmacklem nfsv4root_set = 0; 2622191783Srmacklem } else if (error == 0) { 2623191783Srmacklem if (nfsexargp->fspec == NULL) 2624191783Srmacklem return (EPERM); 2625191783Srmacklem /* 2626191783Srmacklem * If fspec != NULL, this is the v4root path. 2627191783Srmacklem */ 2628191783Srmacklem NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_USERSPACE, 2629191783Srmacklem nfsexargp->fspec, p); 2630191783Srmacklem if ((error = namei(&nd)) != 0) 2631191783Srmacklem return (error); 2632191783Srmacklem error = nfsvno_getfh(nd.ni_vp, &fh, p); 2633191783Srmacklem vrele(nd.ni_vp); 2634191783Srmacklem if (!error) { 2635191783Srmacklem nfs_rootfh.nfsrvfh_len = NFSX_MYFH; 2636191783Srmacklem NFSBCOPY((caddr_t)&fh, 2637191783Srmacklem nfs_rootfh.nfsrvfh_data, 2638191783Srmacklem sizeof (fhandle_t)); 2639191783Srmacklem nfs_rootfhset = 1; 2640191783Srmacklem } 2641191783Srmacklem } 2642191783Srmacklem return (error); 2643191783Srmacklem} 2644191783Srmacklem 2645191783Srmacklem/* 2646191783Srmacklem * Get the tcp socket sequence numbers we need. 2647191783Srmacklem * (Maybe this should be moved to the tcp sources?) 2648191783Srmacklem */ 2649191783Srmacklemint 2650191783Srmacklemnfsrv_getsocksndseq(struct socket *so, tcp_seq *maxp, tcp_seq *unap) 2651191783Srmacklem{ 2652191783Srmacklem struct inpcb *inp; 2653191783Srmacklem struct tcpcb *tp; 2654191783Srmacklem int error = EPIPE; 2655191783Srmacklem 2656191783Srmacklem INP_INFO_RLOCK(&V_tcbinfo); 2657191783Srmacklem inp = sotoinpcb(so); 2658191783Srmacklem if (inp == NULL) { 2659191783Srmacklem INP_INFO_RUNLOCK(&V_tcbinfo); 2660191783Srmacklem return (error); 2661191783Srmacklem } 2662191783Srmacklem INP_RLOCK(inp); 2663191783Srmacklem INP_INFO_RUNLOCK(&V_tcbinfo); 2664191783Srmacklem tp = intotcpcb(inp); 2665191783Srmacklem if (tp != NULL && tp->t_state == TCPS_ESTABLISHED) { 2666191783Srmacklem *maxp = tp->snd_max; 2667191783Srmacklem *unap = tp->snd_una; 2668191783Srmacklem error = 0; 2669191783Srmacklem } 2670191783Srmacklem INP_RUNLOCK(inp); 2671191783Srmacklem return (error); 2672191783Srmacklem} 2673191783Srmacklem 2674191783Srmacklem/* 2675191783Srmacklem * This function needs to test to see if the system is near its limit 2676191783Srmacklem * for memory allocation via malloc() or mget() and return True iff 2677191783Srmacklem * either of these resources are near their limit. 2678191783Srmacklem * XXX (For now, this is just a stub.) 2679191783Srmacklem */ 2680191783Srmacklemint nfsrv_testmalloclimit = 0; 2681191783Srmacklemint 2682191783Srmacklemnfsrv_mallocmget_limit(void) 2683191783Srmacklem{ 2684191783Srmacklem static int printmesg = 0; 2685191783Srmacklem static int testval = 1; 2686191783Srmacklem 2687191783Srmacklem if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 2688191783Srmacklem if ((printmesg++ % 100) == 0) 2689191783Srmacklem printf("nfsd: malloc/mget near limit\n"); 2690191783Srmacklem return (1); 2691191783Srmacklem } 2692191783Srmacklem return (0); 2693191783Srmacklem} 2694191783Srmacklem 2695191783Srmacklem/* 2696191783Srmacklem * BSD specific initialization of a mount point. 2697191783Srmacklem */ 2698191783Srmacklemvoid 2699191783Srmacklemnfsd_mntinit(void) 2700191783Srmacklem{ 2701191783Srmacklem static int inited = 0; 2702191783Srmacklem 2703191783Srmacklem if (inited) 2704191783Srmacklem return; 2705191783Srmacklem inited = 1; 2706191783Srmacklem nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 2707191783Srmacklem TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist); 2708191783Srmacklem nfsv4root_mnt.mnt_export = NULL; 2709191783Srmacklem TAILQ_INIT(&nfsv4root_opt); 2710191783Srmacklem TAILQ_INIT(&nfsv4root_newopt); 2711191783Srmacklem nfsv4root_mnt.mnt_opt = &nfsv4root_opt; 2712191783Srmacklem nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt; 2713191783Srmacklem nfsv4root_mnt.mnt_nvnodelistsize = 0; 2714191783Srmacklem} 2715191783Srmacklem 2716191783Srmacklem/* 2717191783Srmacklem * Get a vnode for a file handle, without checking exports, etc. 2718191783Srmacklem */ 2719191783Srmacklemstruct vnode * 2720191783Srmacklemnfsvno_getvp(fhandle_t *fhp) 2721191783Srmacklem{ 2722191783Srmacklem struct mount *mp; 2723191783Srmacklem struct vnode *vp; 2724191783Srmacklem int error; 2725191783Srmacklem 2726191783Srmacklem mp = vfs_getvfs(&fhp->fh_fsid); 2727191783Srmacklem if (mp == NULL) 2728191783Srmacklem return (NULL); 2729191783Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, &vp); 2730191783Srmacklem if (error) 2731191783Srmacklem return (NULL); 2732191783Srmacklem return (vp); 2733191783Srmacklem} 2734191783Srmacklem 2735191783Srmacklemstatic int id_for_advlock; 2736191783Srmacklem/* 2737191783Srmacklem * Check to see it a byte range lock held by a process running 2738191783Srmacklem * locally on the server conflicts with the new lock. 2739191783Srmacklem */ 2740191783Srmacklemint 2741191783Srmacklemnfsvno_localconflict(struct vnode *vp, int ftype, u_int64_t first, 2742191783Srmacklem u_int64_t end, struct nfslockconflict *cfp, struct thread *p) 2743191783Srmacklem{ 2744191783Srmacklem int error; 2745191783Srmacklem struct flock fl; 2746191783Srmacklem 2747191783Srmacklem if (!nfsrv_dolocallocks) 2748191783Srmacklem return (0); 2749191783Srmacklem fl.l_whence = SEEK_SET; 2750191783Srmacklem fl.l_type = ftype; 2751191783Srmacklem fl.l_start = (off_t)first; 2752191783Srmacklem if (end == NFS64BITSSET) 2753191783Srmacklem fl.l_len = 0; 2754191783Srmacklem else 2755191783Srmacklem fl.l_len = (off_t)(end - first); 2756191783Srmacklem /* 2757191783Srmacklem * FreeBSD8 doesn't like 0, so I'll use the address of id_for_advlock. 2758191783Srmacklem */ 2759191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 2760191783Srmacklem error = VOP_ADVLOCK(vp, &id_for_advlock, F_GETLK, &fl, F_POSIX); 2761191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 2762191783Srmacklem if (error) 2763191783Srmacklem return (error); 2764191783Srmacklem if (fl.l_type == F_UNLCK) 2765191783Srmacklem return (0); 2766191783Srmacklem if (cfp != NULL) { 2767191783Srmacklem cfp->cl_clientid.lval[0] = cfp->cl_clientid.lval[1] = 0; 2768191783Srmacklem cfp->cl_first = (u_int64_t)fl.l_start; 2769191783Srmacklem if (fl.l_len == 0) 2770191783Srmacklem cfp->cl_end = NFS64BITSSET; 2771191783Srmacklem else 2772191783Srmacklem cfp->cl_end = (u_int64_t) 2773191783Srmacklem (fl.l_start + fl.l_len); 2774191783Srmacklem if (fl.l_type == F_WRLCK) 2775191783Srmacklem cfp->cl_flags = NFSLCK_WRITE; 2776191783Srmacklem else 2777191783Srmacklem cfp->cl_flags = NFSLCK_READ; 2778191783Srmacklem sprintf(cfp->cl_owner, "LOCALID%d", fl.l_pid); 2779191783Srmacklem cfp->cl_ownerlen = strlen(cfp->cl_owner); 2780191783Srmacklem return (NFSERR_DENIED); 2781191783Srmacklem } 2782191783Srmacklem return (NFSERR_INVAL); 2783191783Srmacklem} 2784191783Srmacklem 2785191783Srmacklem/* 2786191783Srmacklem * Do a local VOP_ADVLOCK(). 2787191783Srmacklem */ 2788191783Srmacklemint 2789191783Srmacklemnfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 2790191783Srmacklem u_int64_t end, struct thread *p) 2791191783Srmacklem{ 2792191783Srmacklem int error; 2793191783Srmacklem struct flock fl; 2794191783Srmacklem u_int64_t tlen; 2795191783Srmacklem 2796191783Srmacklem if (!nfsrv_dolocallocks) 2797191783Srmacklem return (0); 2798191783Srmacklem fl.l_whence = SEEK_SET; 2799191783Srmacklem fl.l_type = ftype; 2800191783Srmacklem fl.l_start = (off_t)first; 2801191783Srmacklem if (end == NFS64BITSSET) { 2802191783Srmacklem fl.l_len = 0; 2803191783Srmacklem } else { 2804191783Srmacklem tlen = end - first; 2805191783Srmacklem fl.l_len = (off_t)tlen; 2806191783Srmacklem } 2807191783Srmacklem /* 2808191783Srmacklem * FreeBSD8 doesn't like 0, so I'll use the address of id_for_advlock. 2809191783Srmacklem */ 2810191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 2811191783Srmacklem error = VOP_ADVLOCK(vp, &id_for_advlock, F_SETLK, &fl, F_POSIX); 2812191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 2813191783Srmacklem return (error); 2814191783Srmacklem} 2815191783Srmacklem 2816191783Srmacklem/* 2817191783Srmacklem * Unlock an underlying local file system. 2818191783Srmacklem */ 2819191783Srmacklemvoid 2820191783Srmacklemnfsvno_unlockvfs(struct mount *mp) 2821191783Srmacklem{ 2822191783Srmacklem 2823191783Srmacklem VFS_UNLOCK_GIANT(mp); 2824191783Srmacklem} 2825191783Srmacklem 2826191783Srmacklem/* 2827191783Srmacklem * Lock an underlying file system, as required, and return 2828191783Srmacklem * whether or not it is locked. 2829191783Srmacklem */ 2830191783Srmacklemint 2831191783Srmacklemnfsvno_lockvfs(struct mount *mp) 2832191783Srmacklem{ 2833191783Srmacklem int ret; 2834191783Srmacklem 2835191783Srmacklem ret = VFS_LOCK_GIANT(mp); 2836191783Srmacklem return (ret); 2837191783Srmacklem} 2838191783Srmacklem 2839191783Srmacklem/* 2840191783Srmacklem * Check the nfsv4 root exports. 2841191783Srmacklem */ 2842191783Srmacklemint 2843191783Srmacklemnfsvno_v4rootexport(struct nfsrv_descript *nd) 2844191783Srmacklem{ 2845191783Srmacklem struct ucred *credanon; 2846191783Srmacklem int exflags, error; 2847191783Srmacklem 2848191783Srmacklem error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags, 2849191783Srmacklem &credanon, NULL, NULL); 2850191783Srmacklem if (error) 2851191783Srmacklem return (NFSERR_PROGUNAVAIL); 2852191783Srmacklem if ((exflags & MNT_EXGSSONLY)) 2853191783Srmacklem nd->nd_flag |= ND_EXGSSONLY; 2854191940Skan if (credanon != NULL) 2855191940Skan crfree(credanon); 2856191783Srmacklem return (0); 2857191783Srmacklem} 2858191783Srmacklem 2859191783Srmacklem/* 2860191783Srmacklem * Nfs server psuedo system call for the nfsd's 2861191783Srmacklem */ 2862191783Srmacklem/* 2863191783Srmacklem * MPSAFE 2864191783Srmacklem */ 2865191783Srmacklemstatic int 2866191783Srmacklemnfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 2867191783Srmacklem{ 2868191783Srmacklem struct file *fp; 2869191783Srmacklem struct nfsd_args nfsdarg; 2870191783Srmacklem int error; 2871191783Srmacklem 2872191783Srmacklem if (uap->flag & NFSSVC_NFSDADDSOCK) { 2873191783Srmacklem error = copyin(uap->argp, (caddr_t)&nfsdarg, sizeof(nfsdarg)); 2874191783Srmacklem if (error) 2875191783Srmacklem return (error); 2876191783Srmacklem if ((error = fget(td, nfsdarg.sock, &fp)) != 0) { 2877191783Srmacklem return (error); 2878191783Srmacklem } 2879191783Srmacklem if (fp->f_type != DTYPE_SOCKET) { 2880191783Srmacklem fdrop(fp, td); 2881191783Srmacklem return (EPERM); 2882191783Srmacklem } 2883191783Srmacklem error = nfsrvd_addsock(fp); 2884191783Srmacklem fdrop(fp, td); 2885191783Srmacklem } else if (uap->flag & NFSSVC_NFSDNFSD) { 2886191783Srmacklem error = nfsrvd_nfsd(td, NULL); 2887191783Srmacklem } else { 2888191783Srmacklem error = nfssvc_srvcall(td, uap, td->td_ucred); 2889191783Srmacklem } 2890191783Srmacklem return (error); 2891191783Srmacklem} 2892191783Srmacklem 2893191783Srmacklemstatic int 2894191783Srmacklemnfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 2895191783Srmacklem{ 2896191783Srmacklem struct nfsex_args export; 2897191783Srmacklem struct file *fp = NULL; 2898191783Srmacklem int stablefd, len; 2899191783Srmacklem struct nfsd_clid adminrevoke; 2900191783Srmacklem struct nfsd_dumplist dumplist; 2901191783Srmacklem struct nfsd_dumpclients *dumpclients; 2902191783Srmacklem struct nfsd_dumplocklist dumplocklist; 2903191783Srmacklem struct nfsd_dumplocks *dumplocks; 2904191783Srmacklem struct nameidata nd; 2905191783Srmacklem vnode_t vp; 2906191783Srmacklem int error = EINVAL; 2907191783Srmacklem 2908191783Srmacklem if (uap->flag & NFSSVC_PUBLICFH) { 2909191783Srmacklem NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 2910191783Srmacklem sizeof (fhandle_t)); 2911191783Srmacklem error = copyin(uap->argp, 2912191783Srmacklem &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 2913191783Srmacklem if (!error) 2914191783Srmacklem nfs_pubfhset = 1; 2915191783Srmacklem } else if (uap->flag & NFSSVC_V4ROOTEXPORT) { 2916191783Srmacklem error = copyin(uap->argp,(caddr_t)&export, 2917191783Srmacklem sizeof (struct nfsex_args)); 2918191783Srmacklem if (!error) 2919191783Srmacklem error = nfsrv_v4rootexport(&export, cred, p); 2920191783Srmacklem } else if (uap->flag & NFSSVC_NOPUBLICFH) { 2921191783Srmacklem nfs_pubfhset = 0; 2922191783Srmacklem error = 0; 2923191783Srmacklem } else if (uap->flag & NFSSVC_STABLERESTART) { 2924191783Srmacklem error = copyin(uap->argp, (caddr_t)&stablefd, 2925191783Srmacklem sizeof (int)); 2926191783Srmacklem if (!error) 2927191783Srmacklem error = fp_getfvp(p, stablefd, &fp, &vp); 2928191783Srmacklem if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 2929191783Srmacklem error = EBADF; 2930191783Srmacklem if (!error && newnfs_numnfsd != 0) 2931191783Srmacklem error = EPERM; 2932191783Srmacklem if (!error) { 2933191783Srmacklem nfsrv_stablefirst.nsf_fp = fp; 2934191783Srmacklem nfsrv_setupstable(p); 2935191783Srmacklem } 2936191783Srmacklem } else if (uap->flag & NFSSVC_ADMINREVOKE) { 2937191783Srmacklem error = copyin(uap->argp, (caddr_t)&adminrevoke, 2938191783Srmacklem sizeof (struct nfsd_clid)); 2939191783Srmacklem if (!error) 2940191783Srmacklem error = nfsrv_adminrevoke(&adminrevoke, p); 2941191783Srmacklem } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 2942191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplist, 2943191783Srmacklem sizeof (struct nfsd_dumplist)); 2944191783Srmacklem if (!error && (dumplist.ndl_size < 1 || 2945191783Srmacklem dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 2946191783Srmacklem error = EPERM; 2947191783Srmacklem if (!error) { 2948191783Srmacklem len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 2949191783Srmacklem dumpclients = (struct nfsd_dumpclients *)malloc(len, 2950191783Srmacklem M_TEMP, M_WAITOK); 2951191783Srmacklem nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 2952191783Srmacklem error = copyout(dumpclients, 2953191783Srmacklem CAST_USER_ADDR_T(dumplist.ndl_list), len); 2954191783Srmacklem free((caddr_t)dumpclients, M_TEMP); 2955191783Srmacklem } 2956191783Srmacklem } else if (uap->flag & NFSSVC_DUMPLOCKS) { 2957191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplocklist, 2958191783Srmacklem sizeof (struct nfsd_dumplocklist)); 2959191783Srmacklem if (!error && (dumplocklist.ndllck_size < 1 || 2960191783Srmacklem dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 2961191783Srmacklem error = EPERM; 2962191783Srmacklem if (!error) 2963191783Srmacklem error = nfsrv_lookupfilename(&nd, 2964191783Srmacklem dumplocklist.ndllck_fname, p); 2965191783Srmacklem if (!error) { 2966191783Srmacklem len = sizeof (struct nfsd_dumplocks) * 2967191783Srmacklem dumplocklist.ndllck_size; 2968191783Srmacklem dumplocks = (struct nfsd_dumplocks *)malloc(len, 2969191783Srmacklem M_TEMP, M_WAITOK); 2970191783Srmacklem nfsrv_dumplocks(nd.ni_vp, dumplocks, 2971191783Srmacklem dumplocklist.ndllck_size, p); 2972191783Srmacklem vput(nd.ni_vp); 2973191783Srmacklem error = copyout(dumplocks, 2974191783Srmacklem CAST_USER_ADDR_T(dumplocklist.ndllck_list), len); 2975191783Srmacklem free((caddr_t)dumplocks, M_TEMP); 2976191783Srmacklem } 2977191783Srmacklem } 2978191783Srmacklem return (error); 2979191783Srmacklem} 2980191783Srmacklem 2981191783Srmacklemextern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 2982191783Srmacklem 2983191783Srmacklem/* 2984191783Srmacklem * Called once to initialize data structures... 2985191783Srmacklem */ 2986191783Srmacklemstatic int 2987191783Srmacklemnfsd_modevent(module_t mod, int type, void *data) 2988191783Srmacklem{ 2989191783Srmacklem int error = 0; 2990191783Srmacklem static int loaded = 0; 2991191783Srmacklem 2992191783Srmacklem switch (type) { 2993191783Srmacklem case MOD_LOAD: 2994191783Srmacklem if (loaded) 2995191783Srmacklem return (0); 2996191783Srmacklem newnfs_portinit(); 2997191783Srmacklem mtx_init(&nfs_cache_mutex, "nfs_cache_mutex", NULL, MTX_DEF); 2998191783Srmacklem mtx_init(&nfs_v4root_mutex, "nfs_v4root_mutex", NULL, MTX_DEF); 2999191783Srmacklem mtx_init(&nfsv4root_mnt.mnt_mtx, "struct mount mtx", NULL, 3000191783Srmacklem MTX_DEF); 3001191783Srmacklem lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0); 3002191783Srmacklem nfsrvd_initcache(); 3003191783Srmacklem nfsd_init(); 3004191783Srmacklem NFSD_LOCK(); 3005191783Srmacklem nfsrvd_init(0); 3006191783Srmacklem NFSD_UNLOCK(); 3007191783Srmacklem nfsd_mntinit(); 3008191783Srmacklem#ifdef VV_DISABLEDELEG 3009191783Srmacklem vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 3010191783Srmacklem vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 3011191783Srmacklem#endif 3012191783Srmacklem nfsd_call_servertimer = nfsrv_servertimer; 3013191783Srmacklem nfsd_call_nfsd = nfssvc_nfsd; 3014191783Srmacklem loaded = 1; 3015191783Srmacklem break; 3016191783Srmacklem 3017191783Srmacklem case MOD_UNLOAD: 3018191783Srmacklem if (newnfs_numnfsd != 0) { 3019191783Srmacklem error = EBUSY; 3020191783Srmacklem break; 3021191783Srmacklem } 3022191783Srmacklem 3023191783Srmacklem#ifdef VV_DISABLEDELEG 3024191783Srmacklem vn_deleg_ops.vndeleg_recall = NULL; 3025191783Srmacklem vn_deleg_ops.vndeleg_disable = NULL; 3026191783Srmacklem#endif 3027191783Srmacklem nfsd_call_servertimer = NULL; 3028191783Srmacklem nfsd_call_nfsd = NULL; 3029191783Srmacklem /* and get rid of the locks */ 3030191783Srmacklem mtx_destroy(&nfs_cache_mutex); 3031191783Srmacklem mtx_destroy(&nfs_v4root_mutex); 3032191783Srmacklem mtx_destroy(&nfsv4root_mnt.mnt_mtx); 3033191783Srmacklem lockdestroy(&nfsv4root_mnt.mnt_explock); 3034191783Srmacklem loaded = 0; 3035191783Srmacklem break; 3036191783Srmacklem default: 3037191783Srmacklem error = EOPNOTSUPP; 3038191783Srmacklem break; 3039191783Srmacklem } 3040191783Srmacklem return error; 3041191783Srmacklem} 3042191783Srmacklemstatic moduledata_t nfsd_mod = { 3043191783Srmacklem "nfsd", 3044191783Srmacklem nfsd_modevent, 3045191783Srmacklem NULL, 3046191783Srmacklem}; 3047191783SrmacklemDECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 3048191783Srmacklem 3049191783Srmacklem/* So that loader and kldload(2) can find us, wherever we are.. */ 3050191783SrmacklemMODULE_VERSION(nfsd, 1); 3051191783SrmacklemMODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 3052191783Srmacklem 3053