nfs_nfsdport.c revision 199715
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 199715 2009-11-23 16:08:15Z rmacklem $"); 36191783Srmacklem 37191783Srmacklem/* 38191783Srmacklem * Functions that perform the vfs operations required by the routines in 39191783Srmacklem * nfsd_serv.c. It is hoped that this change will make the server more 40191783Srmacklem * portable. 41191783Srmacklem */ 42191783Srmacklem 43191783Srmacklem#include <fs/nfs/nfsport.h> 44191783Srmacklem#include <sys/sysctl.h> 45192503Srmacklem#include <nlm/nlm_prot.h> 46192503Srmacklem#include <nlm/nlm.h> 47191783Srmacklem 48191783Srmacklemextern u_int32_t newnfs_true, newnfs_false, newnfs_xdrneg1; 49191783Srmacklemextern int nfsv4root_set; 50191783Srmacklemextern int nfsrv_useacl; 51191783Srmacklemextern int newnfs_numnfsd; 52191783Srmacklemextern struct mount nfsv4root_mnt; 53191783Srmacklemextern struct nfsrv_stablefirst nfsrv_stablefirst; 54191783Srmacklemextern void (*nfsd_call_servertimer)(void); 55191783Srmacklemstruct vfsoptlist nfsv4root_opt, nfsv4root_newopt; 56191783SrmacklemNFSDLOCKMUTEX; 57191783Srmacklemstruct mtx nfs_cache_mutex; 58191783Srmacklemstruct mtx nfs_v4root_mutex; 59191783Srmacklemstruct nfsrvfh nfs_rootfh, nfs_pubfh; 60191783Srmacklemint nfs_pubfhset = 0, nfs_rootfhset = 0; 61192503Srmacklemstatic uint32_t nfsv4_sysid = 0; 62191783Srmacklem 63192255Srmacklemstatic int nfssvc_srvcall(struct thread *, struct nfssvc_args *, 64192255Srmacklem struct ucred *); 65191783Srmacklem 66191783Srmacklemstatic int enable_crossmntpt = 1; 67191783Srmacklemstatic int nfs_commit_blks; 68191783Srmacklemstatic int nfs_commit_miss; 69191783Srmacklemextern int nfsrv_issuedelegs; 70192255Srmacklemextern int nfsrv_dolocallocks; 71192255Srmacklem 72191783SrmacklemSYSCTL_DECL(_vfs_newnfs); 73192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, mirrormnt, CTLFLAG_RW, &enable_crossmntpt, 74192255Srmacklem 0, "Enable nfsd to cross mount points"); 75192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_blks, CTLFLAG_RW, &nfs_commit_blks, 76192255Srmacklem 0, ""); 77192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_miss, CTLFLAG_RW, &nfs_commit_miss, 78192255Srmacklem 0, ""); 79192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, issue_delegations, CTLFLAG_RW, 80192255Srmacklem &nfsrv_issuedelegs, 0, "Enable nfsd to issue delegations"); 81192255SrmacklemSYSCTL_INT(_vfs_newnfs, OID_AUTO, enable_locallocks, CTLFLAG_RW, 82192255Srmacklem &nfsrv_dolocallocks, 0, "Enable nfsd to acquire local locks on files"); 83191783Srmacklem 84191783Srmacklem#define NUM_HEURISTIC 1017 85191783Srmacklem#define NHUSE_INIT 64 86191783Srmacklem#define NHUSE_INC 16 87191783Srmacklem#define NHUSE_MAX 2048 88191783Srmacklem 89191783Srmacklemstatic struct nfsheur { 90191783Srmacklem struct vnode *nh_vp; /* vp to match (unreferenced pointer) */ 91191783Srmacklem off_t nh_nextr; /* next offset for sequential detection */ 92191783Srmacklem int nh_use; /* use count for selection */ 93191783Srmacklem int nh_seqcount; /* heuristic */ 94191783Srmacklem} nfsheur[NUM_HEURISTIC]; 95191783Srmacklem 96191783Srmacklem 97191783Srmacklem/* 98191783Srmacklem * Get attributes into nfsvattr structure. 99191783Srmacklem */ 100191783Srmacklemint 101191783Srmacklemnfsvno_getattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 102191783Srmacklem struct thread *p) 103191783Srmacklem{ 104191783Srmacklem int error, lockedit = 0; 105191783Srmacklem 106191783Srmacklem /* Since FreeBSD insists the vnode be locked... */ 107191783Srmacklem if (VOP_ISLOCKED(vp) != LK_EXCLUSIVE) { 108191783Srmacklem lockedit = 1; 109191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 110191783Srmacklem } 111191783Srmacklem error = VOP_GETATTR(vp, &nvap->na_vattr, cred); 112191783Srmacklem if (lockedit) 113191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 114191783Srmacklem return (error); 115191783Srmacklem} 116191783Srmacklem 117191783Srmacklem/* 118191783Srmacklem * Get a file handle for a vnode. 119191783Srmacklem */ 120191783Srmacklemint 121191783Srmacklemnfsvno_getfh(struct vnode *vp, fhandle_t *fhp, struct thread *p) 122191783Srmacklem{ 123191783Srmacklem int error; 124191783Srmacklem 125191783Srmacklem NFSBZERO((caddr_t)fhp, sizeof(fhandle_t)); 126191783Srmacklem fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid; 127191783Srmacklem error = VOP_VPTOFH(vp, &fhp->fh_fid); 128191783Srmacklem return (error); 129191783Srmacklem} 130191783Srmacklem 131191783Srmacklem/* 132191783Srmacklem * Perform access checking for vnodes obtained from file handles that would 133191783Srmacklem * refer to files already opened by a Unix client. You cannot just use 134191783Srmacklem * vn_writechk() and VOP_ACCESS() for two reasons. 135191783Srmacklem * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write case 136191783Srmacklem * 2 - The owner is to be given access irrespective of mode bits for some 137191783Srmacklem * operations, so that processes that chmod after opening a file don't 138191783Srmacklem * break. 139191783Srmacklem */ 140191783Srmacklemint 141191783Srmacklemnfsvno_accchk(struct vnode *vp, u_int32_t accessbits, struct ucred *cred, 142191783Srmacklem struct nfsexstuff *exp, struct thread *p, int override, int vpislocked) 143191783Srmacklem{ 144191783Srmacklem struct vattr vattr; 145191783Srmacklem int error = 0, getret = 0; 146191783Srmacklem accmode_t accmode; 147191783Srmacklem 148191783Srmacklem /* 149191783Srmacklem * Convert accessbits to Vxxx flags. 150191783Srmacklem */ 151191783Srmacklem if (accessbits & (NFSV4ACE_WRITEDATA | NFSV4ACE_APPENDDATA | 152191783Srmacklem NFSV4ACE_ADDFILE | NFSV4ACE_ADDSUBDIRECTORY | 153191783Srmacklem NFSV4ACE_DELETECHILD | NFSV4ACE_WRITEATTRIBUTES | 154191783Srmacklem NFSV4ACE_DELETE | NFSV4ACE_WRITEACL | NFSV4ACE_WRITEOWNER)) 155191783Srmacklem accmode = VWRITE; 156191783Srmacklem else if (accessbits & (NFSV4ACE_EXECUTE | NFSV4ACE_SEARCH)) 157191783Srmacklem accmode = VEXEC; 158191783Srmacklem else 159191783Srmacklem accmode = VREAD; 160191783Srmacklem 161191783Srmacklem if (accmode & VWRITE) { 162191783Srmacklem /* Just vn_writechk() changed to check rdonly */ 163191783Srmacklem /* 164191783Srmacklem * Disallow write attempts on read-only file systems; 165191783Srmacklem * unless the file is a socket or a block or character 166191783Srmacklem * device resident on the file system. 167191783Srmacklem */ 168191783Srmacklem if (NFSVNO_EXRDONLY(exp) || 169191783Srmacklem (vp->v_mount->mnt_flag & MNT_RDONLY)) { 170191783Srmacklem switch (vp->v_type) { 171191783Srmacklem case VREG: 172191783Srmacklem case VDIR: 173191783Srmacklem case VLNK: 174191783Srmacklem return (EROFS); 175191783Srmacklem default: 176191783Srmacklem break; 177191783Srmacklem } 178191783Srmacklem } 179191783Srmacklem /* 180191783Srmacklem * If there's shared text associated with 181191783Srmacklem * the inode, try to free it up once. If 182191783Srmacklem * we fail, we can't allow writing. 183191783Srmacklem */ 184191783Srmacklem if (vp->v_vflag & VV_TEXT) 185191783Srmacklem return (ETXTBSY); 186191783Srmacklem } 187191783Srmacklem if (vpislocked == 0) 188191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 189191783Srmacklem 190192861Srmacklem#if defined(NFS4_ACL_EXTATTR_NAME) && defined(notyet) 191191783Srmacklem /* 192192861Srmacklem * This function should be called once FFS has NFSv4 ACL support 193192861Srmacklem * in it. 194192861Srmacklem */ 195192861Srmacklem /* 196191783Srmacklem * Should the override still be applied when ACLs are enabled? 197191783Srmacklem */ 198191783Srmacklem if (nfsrv_useacl != 0 && NFSHASNFS4ACL(vp->v_mount)) 199191783Srmacklem error = nfsrv_aclaccess(vp, accmode, accessbits, cred, p); 200191783Srmacklem else 201191783Srmacklem#endif 202191783Srmacklem if (accessbits == NFSV4ACE_READATTRIBUTES) 203191783Srmacklem error = 0; 204191783Srmacklem else 205191783Srmacklem error = VOP_ACCESS(vp, accmode, cred, p); 206191783Srmacklem 207191783Srmacklem /* 208191783Srmacklem * Allow certain operations for the owner (reads and writes 209191783Srmacklem * on files that are already open). 210191783Srmacklem */ 211191783Srmacklem if (override != NFSACCCHK_NOOVERRIDE && 212191783Srmacklem (error == EPERM || error == EACCES)) { 213191783Srmacklem if (cred->cr_uid == 0 && (override & NFSACCCHK_ALLOWROOT)) 214191783Srmacklem error = 0; 215191783Srmacklem else if (override & NFSACCCHK_ALLOWOWNER) { 216191783Srmacklem getret = VOP_GETATTR(vp, &vattr, cred); 217191783Srmacklem if (getret == 0 && cred->cr_uid == vattr.va_uid) 218191783Srmacklem error = 0; 219191783Srmacklem } 220191783Srmacklem } 221191783Srmacklem if (vpislocked == 0) 222191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 223191783Srmacklem return (error); 224191783Srmacklem} 225191783Srmacklem 226191783Srmacklem/* 227191783Srmacklem * Set attribute(s) vnop. 228191783Srmacklem */ 229191783Srmacklemint 230191783Srmacklemnfsvno_setattr(struct vnode *vp, struct nfsvattr *nvap, struct ucred *cred, 231191783Srmacklem struct thread *p, struct nfsexstuff *exp) 232191783Srmacklem{ 233191783Srmacklem int error; 234191783Srmacklem 235191783Srmacklem error = VOP_SETATTR(vp, &nvap->na_vattr, cred); 236191783Srmacklem return (error); 237191783Srmacklem} 238191783Srmacklem 239191783Srmacklem/* 240191783Srmacklem * Set up nameidata for a lookup() call and do it 241191783Srmacklem * For the cases where we are crossing mount points 242191783Srmacklem * (looking up the public fh path or the v4 root path when 243191783Srmacklem * not using a pseudo-root fs), set/release the Giant lock, 244191783Srmacklem * as required. 245191783Srmacklem */ 246191783Srmacklemint 247191783Srmacklemnfsvno_namei(struct nfsrv_descript *nd, struct nameidata *ndp, 248191783Srmacklem struct vnode *dp, int islocked, struct nfsexstuff *exp, struct thread *p, 249191783Srmacklem struct vnode **retdirp) 250191783Srmacklem{ 251191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 252191783Srmacklem int i; 253191783Srmacklem struct iovec aiov; 254191783Srmacklem struct uio auio; 255191783Srmacklem int lockleaf = (cnp->cn_flags & LOCKLEAF) != 0, linklen; 256191783Srmacklem int error = 0, crossmnt; 257191783Srmacklem char *cp; 258191783Srmacklem 259191783Srmacklem *retdirp = NULL; 260191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 261191783Srmacklem /* 262191783Srmacklem * Extract and set starting directory. 263191783Srmacklem */ 264191783Srmacklem if (dp->v_type != VDIR) { 265191783Srmacklem if (islocked) 266191783Srmacklem vput(dp); 267191783Srmacklem else 268191783Srmacklem vrele(dp); 269191783Srmacklem nfsvno_relpathbuf(ndp); 270191783Srmacklem return (ENOTDIR); 271191783Srmacklem } 272191783Srmacklem if (islocked) 273191783Srmacklem NFSVOPUNLOCK(dp, 0, p); 274191783Srmacklem VREF(dp); 275191783Srmacklem *retdirp = dp; 276191783Srmacklem if (NFSVNO_EXRDONLY(exp)) 277191783Srmacklem cnp->cn_flags |= RDONLY; 278191783Srmacklem ndp->ni_segflg = UIO_SYSSPACE; 279191783Srmacklem crossmnt = 1; 280191783Srmacklem 281191783Srmacklem if (nd->nd_flag & ND_PUBLOOKUP) { 282191783Srmacklem ndp->ni_loopcnt = 0; 283191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 284191783Srmacklem vrele(dp); 285191783Srmacklem /* 286191783Srmacklem * Check for degenerate pathnames here, since lookup() 287191783Srmacklem * panics on them. 288191783Srmacklem */ 289191783Srmacklem for (i = 1; i < ndp->ni_pathlen; i++) 290191783Srmacklem if (cnp->cn_pnbuf[i] != '/') 291191783Srmacklem break; 292191783Srmacklem if (i == ndp->ni_pathlen) { 293191783Srmacklem error = NFSERR_ACCES; 294191783Srmacklem goto out; 295191783Srmacklem } 296191783Srmacklem dp = rootvnode; 297191783Srmacklem VREF(dp); 298191783Srmacklem } 299191783Srmacklem } else if ((enable_crossmntpt == 0 && NFSVNO_EXPORTED(exp)) || 300191783Srmacklem (nd->nd_flag & ND_NFSV4) == 0) { 301191783Srmacklem /* 302191783Srmacklem * Only cross mount points for NFSv4 when doing a 303191783Srmacklem * mount while traversing the file system above 304191783Srmacklem * the mount point, unless enable_crossmntpt is set. 305191783Srmacklem */ 306191783Srmacklem cnp->cn_flags |= NOCROSSMOUNT; 307191783Srmacklem crossmnt = 0; 308191783Srmacklem } 309191783Srmacklem 310191783Srmacklem /* 311191783Srmacklem * Initialize for scan, set ni_startdir and bump ref on dp again 312191783Srmacklem * becuase lookup() will dereference ni_startdir. 313191783Srmacklem */ 314191783Srmacklem 315191783Srmacklem cnp->cn_thread = p; 316191783Srmacklem ndp->ni_startdir = dp; 317191783Srmacklem ndp->ni_rootdir = rootvnode; 318191783Srmacklem 319191783Srmacklem if (!lockleaf) 320191783Srmacklem cnp->cn_flags |= LOCKLEAF; 321191783Srmacklem for (;;) { 322191783Srmacklem cnp->cn_nameptr = cnp->cn_pnbuf; 323191783Srmacklem /* 324191783Srmacklem * Call lookup() to do the real work. If an error occurs, 325191783Srmacklem * ndp->ni_vp and ni_dvp are left uninitialized or NULL and 326191783Srmacklem * we do not have to dereference anything before returning. 327191783Srmacklem * In either case ni_startdir will be dereferenced and NULLed 328191783Srmacklem * out. 329191783Srmacklem */ 330191783Srmacklem if (exp->nes_vfslocked) 331191783Srmacklem ndp->ni_cnd.cn_flags |= GIANTHELD; 332191783Srmacklem error = lookup(ndp); 333191783Srmacklem /* 334191783Srmacklem * The Giant lock should only change when 335191783Srmacklem * crossing mount points. 336191783Srmacklem */ 337191783Srmacklem if (crossmnt) { 338191783Srmacklem exp->nes_vfslocked = 339191783Srmacklem (ndp->ni_cnd.cn_flags & GIANTHELD) != 0; 340191783Srmacklem ndp->ni_cnd.cn_flags &= ~GIANTHELD; 341191783Srmacklem } 342191783Srmacklem if (error) 343191783Srmacklem break; 344191783Srmacklem 345191783Srmacklem /* 346191783Srmacklem * Check for encountering a symbolic link. Trivial 347191783Srmacklem * termination occurs if no symlink encountered. 348191783Srmacklem */ 349191783Srmacklem if ((cnp->cn_flags & ISSYMLINK) == 0) { 350191783Srmacklem if ((cnp->cn_flags & (SAVENAME | SAVESTART)) == 0) 351191783Srmacklem nfsvno_relpathbuf(ndp); 352191783Srmacklem if (ndp->ni_vp && !lockleaf) 353191783Srmacklem NFSVOPUNLOCK(ndp->ni_vp, 0, p); 354191783Srmacklem break; 355191783Srmacklem } 356191783Srmacklem 357191783Srmacklem /* 358191783Srmacklem * Validate symlink 359191783Srmacklem */ 360191783Srmacklem if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 361191783Srmacklem NFSVOPUNLOCK(ndp->ni_dvp, 0, p); 362191783Srmacklem if (!(nd->nd_flag & ND_PUBLOOKUP)) { 363191783Srmacklem error = EINVAL; 364191783Srmacklem goto badlink2; 365191783Srmacklem } 366191783Srmacklem 367191783Srmacklem if (ndp->ni_loopcnt++ >= MAXSYMLINKS) { 368191783Srmacklem error = ELOOP; 369191783Srmacklem goto badlink2; 370191783Srmacklem } 371191783Srmacklem if (ndp->ni_pathlen > 1) 372191783Srmacklem cp = uma_zalloc(namei_zone, M_WAITOK); 373191783Srmacklem else 374191783Srmacklem cp = cnp->cn_pnbuf; 375191783Srmacklem aiov.iov_base = cp; 376191783Srmacklem aiov.iov_len = MAXPATHLEN; 377191783Srmacklem auio.uio_iov = &aiov; 378191783Srmacklem auio.uio_iovcnt = 1; 379191783Srmacklem auio.uio_offset = 0; 380191783Srmacklem auio.uio_rw = UIO_READ; 381191783Srmacklem auio.uio_segflg = UIO_SYSSPACE; 382191783Srmacklem auio.uio_td = NULL; 383191783Srmacklem auio.uio_resid = MAXPATHLEN; 384191783Srmacklem error = VOP_READLINK(ndp->ni_vp, &auio, cnp->cn_cred); 385191783Srmacklem if (error) { 386191783Srmacklem badlink1: 387191783Srmacklem if (ndp->ni_pathlen > 1) 388191783Srmacklem uma_zfree(namei_zone, cp); 389191783Srmacklem badlink2: 390191783Srmacklem vrele(ndp->ni_dvp); 391191783Srmacklem vput(ndp->ni_vp); 392191783Srmacklem break; 393191783Srmacklem } 394191783Srmacklem linklen = MAXPATHLEN - auio.uio_resid; 395191783Srmacklem if (linklen == 0) { 396191783Srmacklem error = ENOENT; 397191783Srmacklem goto badlink1; 398191783Srmacklem } 399191783Srmacklem if (linklen + ndp->ni_pathlen >= MAXPATHLEN) { 400191783Srmacklem error = ENAMETOOLONG; 401191783Srmacklem goto badlink1; 402191783Srmacklem } 403191783Srmacklem 404191783Srmacklem /* 405191783Srmacklem * Adjust or replace path 406191783Srmacklem */ 407191783Srmacklem if (ndp->ni_pathlen > 1) { 408191783Srmacklem NFSBCOPY(ndp->ni_next, cp + linklen, ndp->ni_pathlen); 409191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 410191783Srmacklem cnp->cn_pnbuf = cp; 411191783Srmacklem } else 412191783Srmacklem cnp->cn_pnbuf[linklen] = '\0'; 413191783Srmacklem ndp->ni_pathlen += linklen; 414191783Srmacklem 415191783Srmacklem /* 416191783Srmacklem * Cleanup refs for next loop and check if root directory 417191783Srmacklem * should replace current directory. Normally ni_dvp 418191783Srmacklem * becomes the new base directory and is cleaned up when 419191783Srmacklem * we loop. Explicitly null pointers after invalidation 420191783Srmacklem * to clarify operation. 421191783Srmacklem */ 422191783Srmacklem vput(ndp->ni_vp); 423191783Srmacklem ndp->ni_vp = NULL; 424191783Srmacklem 425191783Srmacklem if (cnp->cn_pnbuf[0] == '/') { 426191783Srmacklem vrele(ndp->ni_dvp); 427191783Srmacklem ndp->ni_dvp = ndp->ni_rootdir; 428191783Srmacklem VREF(ndp->ni_dvp); 429191783Srmacklem } 430191783Srmacklem ndp->ni_startdir = ndp->ni_dvp; 431191783Srmacklem ndp->ni_dvp = NULL; 432191783Srmacklem } 433191783Srmacklem if (!lockleaf) 434191783Srmacklem cnp->cn_flags &= ~LOCKLEAF; 435191783Srmacklem 436191783Srmacklemout: 437191783Srmacklem if (error) { 438191783Srmacklem uma_zfree(namei_zone, cnp->cn_pnbuf); 439191783Srmacklem ndp->ni_vp = NULL; 440191783Srmacklem ndp->ni_dvp = NULL; 441191783Srmacklem ndp->ni_startdir = NULL; 442191783Srmacklem cnp->cn_flags &= ~HASBUF; 443191783Srmacklem } else if ((ndp->ni_cnd.cn_flags & (WANTPARENT|LOCKPARENT)) == 0) { 444191783Srmacklem ndp->ni_dvp = NULL; 445191783Srmacklem } 446191783Srmacklem return (error); 447191783Srmacklem} 448191783Srmacklem 449191783Srmacklem/* 450191783Srmacklem * Set up a pathname buffer and return a pointer to it and, optionally 451191783Srmacklem * set a hash pointer. 452191783Srmacklem */ 453191783Srmacklemvoid 454191783Srmacklemnfsvno_setpathbuf(struct nameidata *ndp, char **bufpp, u_long **hashpp) 455191783Srmacklem{ 456191783Srmacklem struct componentname *cnp = &ndp->ni_cnd; 457191783Srmacklem 458191783Srmacklem cnp->cn_flags |= (NOMACCHECK | HASBUF); 459191783Srmacklem cnp->cn_pnbuf = uma_zalloc(namei_zone, M_WAITOK); 460191783Srmacklem if (hashpp != NULL) 461191783Srmacklem *hashpp = NULL; 462191783Srmacklem *bufpp = cnp->cn_pnbuf; 463191783Srmacklem} 464191783Srmacklem 465191783Srmacklem/* 466191783Srmacklem * Release the above path buffer, if not released by nfsvno_namei(). 467191783Srmacklem */ 468191783Srmacklemvoid 469191783Srmacklemnfsvno_relpathbuf(struct nameidata *ndp) 470191783Srmacklem{ 471191783Srmacklem 472191783Srmacklem if ((ndp->ni_cnd.cn_flags & HASBUF) == 0) 473191783Srmacklem panic("nfsrelpath"); 474191783Srmacklem uma_zfree(namei_zone, ndp->ni_cnd.cn_pnbuf); 475191783Srmacklem ndp->ni_cnd.cn_flags &= ~HASBUF; 476191783Srmacklem} 477191783Srmacklem 478191783Srmacklem/* 479191783Srmacklem * Readlink vnode op into an mbuf list. 480191783Srmacklem */ 481191783Srmacklemint 482191783Srmacklemnfsvno_readlink(struct vnode *vp, struct ucred *cred, struct thread *p, 483191783Srmacklem struct mbuf **mpp, struct mbuf **mpendp, int *lenp) 484191783Srmacklem{ 485191783Srmacklem struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN]; 486191783Srmacklem struct iovec *ivp = iv; 487191783Srmacklem struct uio io, *uiop = &io; 488191783Srmacklem struct mbuf *mp, *mp2 = NULL, *mp3 = NULL; 489191783Srmacklem int i, len, tlen, error; 490191783Srmacklem 491191783Srmacklem len = 0; 492191783Srmacklem i = 0; 493191783Srmacklem while (len < NFS_MAXPATHLEN) { 494191783Srmacklem NFSMGET(mp); 495191783Srmacklem MCLGET(mp, M_WAIT); 496191783Srmacklem mp->m_len = NFSMSIZ(mp); 497191783Srmacklem if (len == 0) { 498191783Srmacklem mp3 = mp2 = mp; 499191783Srmacklem } else { 500191783Srmacklem mp2->m_next = mp; 501191783Srmacklem mp2 = mp; 502191783Srmacklem } 503191783Srmacklem if ((len + mp->m_len) > NFS_MAXPATHLEN) { 504191783Srmacklem mp->m_len = NFS_MAXPATHLEN - len; 505191783Srmacklem len = NFS_MAXPATHLEN; 506191783Srmacklem } else { 507191783Srmacklem len += mp->m_len; 508191783Srmacklem } 509191783Srmacklem ivp->iov_base = mtod(mp, caddr_t); 510191783Srmacklem ivp->iov_len = mp->m_len; 511191783Srmacklem i++; 512191783Srmacklem ivp++; 513191783Srmacklem } 514191783Srmacklem uiop->uio_iov = iv; 515191783Srmacklem uiop->uio_iovcnt = i; 516191783Srmacklem uiop->uio_offset = 0; 517191783Srmacklem uiop->uio_resid = len; 518191783Srmacklem uiop->uio_rw = UIO_READ; 519191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 520191783Srmacklem uiop->uio_td = NULL; 521191783Srmacklem error = VOP_READLINK(vp, uiop, cred); 522191783Srmacklem if (error) { 523191783Srmacklem m_freem(mp3); 524191783Srmacklem *lenp = 0; 525191783Srmacklem return (error); 526191783Srmacklem } 527191783Srmacklem if (uiop->uio_resid > 0) { 528191783Srmacklem len -= uiop->uio_resid; 529191783Srmacklem tlen = NFSM_RNDUP(len); 530191783Srmacklem nfsrv_adj(mp3, NFS_MAXPATHLEN - tlen, tlen - len); 531191783Srmacklem } 532191783Srmacklem *lenp = len; 533191783Srmacklem *mpp = mp3; 534191783Srmacklem *mpendp = mp; 535191783Srmacklem return (0); 536191783Srmacklem} 537191783Srmacklem 538191783Srmacklem/* 539191783Srmacklem * Read vnode op call into mbuf list. 540191783Srmacklem */ 541191783Srmacklemint 542191783Srmacklemnfsvno_read(struct vnode *vp, off_t off, int cnt, struct ucred *cred, 543191783Srmacklem struct thread *p, struct mbuf **mpp, struct mbuf **mpendp) 544191783Srmacklem{ 545191783Srmacklem struct mbuf *m; 546191783Srmacklem int i; 547191783Srmacklem struct iovec *iv; 548191783Srmacklem struct iovec *iv2; 549191783Srmacklem int error = 0, len, left, siz, tlen, ioflag = 0, hi, try = 32; 550191783Srmacklem struct mbuf *m2 = NULL, *m3; 551191783Srmacklem struct uio io, *uiop = &io; 552191783Srmacklem struct nfsheur *nh; 553191783Srmacklem 554191783Srmacklem /* 555191783Srmacklem * Calculate seqcount for heuristic 556191783Srmacklem */ 557191783Srmacklem /* 558191783Srmacklem * Locate best candidate 559191783Srmacklem */ 560191783Srmacklem 561191783Srmacklem hi = ((int)(vm_offset_t)vp / sizeof(struct vnode)) % NUM_HEURISTIC; 562191783Srmacklem nh = &nfsheur[hi]; 563191783Srmacklem 564191783Srmacklem while (try--) { 565191783Srmacklem if (nfsheur[hi].nh_vp == vp) { 566191783Srmacklem nh = &nfsheur[hi]; 567191783Srmacklem break; 568191783Srmacklem } 569191783Srmacklem if (nfsheur[hi].nh_use > 0) 570191783Srmacklem --nfsheur[hi].nh_use; 571191783Srmacklem hi = (hi + 1) % NUM_HEURISTIC; 572191783Srmacklem if (nfsheur[hi].nh_use < nh->nh_use) 573191783Srmacklem nh = &nfsheur[hi]; 574191783Srmacklem } 575191783Srmacklem 576191783Srmacklem if (nh->nh_vp != vp) { 577191783Srmacklem nh->nh_vp = vp; 578191783Srmacklem nh->nh_nextr = off; 579191783Srmacklem nh->nh_use = NHUSE_INIT; 580191783Srmacklem if (off == 0) 581191783Srmacklem nh->nh_seqcount = 4; 582191783Srmacklem else 583191783Srmacklem nh->nh_seqcount = 1; 584191783Srmacklem } 585191783Srmacklem 586191783Srmacklem /* 587191783Srmacklem * Calculate heuristic 588191783Srmacklem */ 589191783Srmacklem 590191783Srmacklem if ((off == 0 && nh->nh_seqcount > 0) || off == nh->nh_nextr) { 591191783Srmacklem if (++nh->nh_seqcount > IO_SEQMAX) 592191783Srmacklem nh->nh_seqcount = IO_SEQMAX; 593191783Srmacklem } else if (nh->nh_seqcount > 1) { 594191783Srmacklem nh->nh_seqcount = 1; 595191783Srmacklem } else { 596191783Srmacklem nh->nh_seqcount = 0; 597191783Srmacklem } 598191783Srmacklem nh->nh_use += NHUSE_INC; 599191783Srmacklem if (nh->nh_use > NHUSE_MAX) 600191783Srmacklem nh->nh_use = NHUSE_MAX; 601191783Srmacklem ioflag |= nh->nh_seqcount << IO_SEQSHIFT; 602191783Srmacklem 603191783Srmacklem len = left = NFSM_RNDUP(cnt); 604191783Srmacklem m3 = NULL; 605191783Srmacklem /* 606191783Srmacklem * Generate the mbuf list with the uio_iov ref. to it. 607191783Srmacklem */ 608191783Srmacklem i = 0; 609191783Srmacklem while (left > 0) { 610191783Srmacklem NFSMGET(m); 611191783Srmacklem MCLGET(m, M_WAIT); 612191783Srmacklem m->m_len = 0; 613191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 614191783Srmacklem left -= siz; 615191783Srmacklem i++; 616191783Srmacklem if (m3) 617191783Srmacklem m2->m_next = m; 618191783Srmacklem else 619191783Srmacklem m3 = m; 620191783Srmacklem m2 = m; 621191783Srmacklem } 622191783Srmacklem MALLOC(iv, struct iovec *, i * sizeof (struct iovec), 623191783Srmacklem M_TEMP, M_WAITOK); 624191783Srmacklem uiop->uio_iov = iv2 = iv; 625191783Srmacklem m = m3; 626191783Srmacklem left = len; 627191783Srmacklem i = 0; 628191783Srmacklem while (left > 0) { 629191783Srmacklem if (m == NULL) 630191783Srmacklem panic("nfsvno_read iov"); 631191783Srmacklem siz = min(M_TRAILINGSPACE(m), left); 632191783Srmacklem if (siz > 0) { 633191783Srmacklem iv->iov_base = mtod(m, caddr_t) + m->m_len; 634191783Srmacklem iv->iov_len = siz; 635191783Srmacklem m->m_len += siz; 636191783Srmacklem left -= siz; 637191783Srmacklem iv++; 638191783Srmacklem i++; 639191783Srmacklem } 640191783Srmacklem m = m->m_next; 641191783Srmacklem } 642191783Srmacklem uiop->uio_iovcnt = i; 643191783Srmacklem uiop->uio_offset = off; 644191783Srmacklem uiop->uio_resid = len; 645191783Srmacklem uiop->uio_rw = UIO_READ; 646191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 647191783Srmacklem error = VOP_READ(vp, uiop, IO_NODELOCKED | ioflag, cred); 648191783Srmacklem FREE((caddr_t)iv2, M_TEMP); 649191783Srmacklem if (error) { 650191783Srmacklem m_freem(m3); 651191783Srmacklem *mpp = NULL; 652191783Srmacklem return (error); 653191783Srmacklem } 654191783Srmacklem tlen = len - uiop->uio_resid; 655191783Srmacklem cnt = cnt < tlen ? cnt : tlen; 656191783Srmacklem tlen = NFSM_RNDUP(cnt); 657191783Srmacklem if (tlen == 0) { 658191783Srmacklem m_freem(m3); 659191783Srmacklem m3 = NULL; 660191783Srmacklem } else if (len != tlen || tlen != cnt) 661191783Srmacklem nfsrv_adj(m3, len - tlen, tlen - cnt); 662191783Srmacklem *mpp = m3; 663191783Srmacklem *mpendp = m2; 664191783Srmacklem return (0); 665191783Srmacklem} 666191783Srmacklem 667191783Srmacklem/* 668191783Srmacklem * Write vnode op from an mbuf list. 669191783Srmacklem */ 670191783Srmacklemint 671191783Srmacklemnfsvno_write(struct vnode *vp, off_t off, int retlen, int cnt, int stable, 672191783Srmacklem struct mbuf *mp, char *cp, struct ucred *cred, struct thread *p) 673191783Srmacklem{ 674191783Srmacklem struct iovec *ivp; 675191783Srmacklem int i, len; 676191783Srmacklem struct iovec *iv; 677191783Srmacklem int ioflags, error; 678191783Srmacklem struct uio io, *uiop = &io; 679191783Srmacklem 680191783Srmacklem MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP, 681191783Srmacklem M_WAITOK); 682191783Srmacklem uiop->uio_iov = iv = ivp; 683191783Srmacklem uiop->uio_iovcnt = cnt; 684191783Srmacklem i = mtod(mp, caddr_t) + mp->m_len - cp; 685191783Srmacklem len = retlen; 686191783Srmacklem while (len > 0) { 687191783Srmacklem if (mp == NULL) 688191783Srmacklem panic("nfsvno_write"); 689191783Srmacklem if (i > 0) { 690191783Srmacklem i = min(i, len); 691191783Srmacklem ivp->iov_base = cp; 692191783Srmacklem ivp->iov_len = i; 693191783Srmacklem ivp++; 694191783Srmacklem len -= i; 695191783Srmacklem } 696191783Srmacklem mp = mp->m_next; 697191783Srmacklem if (mp) { 698191783Srmacklem i = mp->m_len; 699191783Srmacklem cp = mtod(mp, caddr_t); 700191783Srmacklem } 701191783Srmacklem } 702191783Srmacklem 703191783Srmacklem if (stable == NFSWRITE_UNSTABLE) 704191783Srmacklem ioflags = IO_NODELOCKED; 705191783Srmacklem else 706191783Srmacklem ioflags = (IO_SYNC | IO_NODELOCKED); 707191783Srmacklem uiop->uio_resid = retlen; 708191783Srmacklem uiop->uio_rw = UIO_WRITE; 709191783Srmacklem uiop->uio_segflg = UIO_SYSSPACE; 710191783Srmacklem NFSUIOPROC(uiop, p); 711191783Srmacklem uiop->uio_offset = off; 712191783Srmacklem error = VOP_WRITE(vp, uiop, ioflags, cred); 713191783Srmacklem FREE((caddr_t)iv, M_TEMP); 714191783Srmacklem return (error); 715191783Srmacklem} 716191783Srmacklem 717191783Srmacklem/* 718191783Srmacklem * Common code for creating a regular file (plus special files for V2). 719191783Srmacklem */ 720191783Srmacklemint 721191783Srmacklemnfsvno_createsub(struct nfsrv_descript *nd, struct nameidata *ndp, 722191783Srmacklem struct vnode **vpp, struct nfsvattr *nvap, int *exclusive_flagp, 723199616Srmacklem int32_t *cverf, NFSDEV_T rdev, struct thread *p, struct nfsexstuff *exp) 724191783Srmacklem{ 725191783Srmacklem u_quad_t tempsize; 726191783Srmacklem int error; 727191783Srmacklem 728191783Srmacklem error = nd->nd_repstat; 729191783Srmacklem if (!error && ndp->ni_vp == NULL) { 730191783Srmacklem if (nvap->na_type == VREG || nvap->na_type == VSOCK) { 731191783Srmacklem vrele(ndp->ni_startdir); 732191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, 733191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 734191783Srmacklem vput(ndp->ni_dvp); 735191783Srmacklem nfsvno_relpathbuf(ndp); 736191783Srmacklem if (!error) { 737191783Srmacklem if (*exclusive_flagp) { 738191783Srmacklem *exclusive_flagp = 0; 739191783Srmacklem NFSVNO_ATTRINIT(nvap); 740199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 741199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 742191783Srmacklem error = VOP_SETATTR(ndp->ni_vp, 743191783Srmacklem &nvap->na_vattr, nd->nd_cred); 744191783Srmacklem } 745191783Srmacklem } 746191783Srmacklem /* 747191783Srmacklem * NFS V2 Only. nfsrvd_mknod() does this for V3. 748191783Srmacklem * (This implies, just get out on an error.) 749191783Srmacklem */ 750191783Srmacklem } else if (nvap->na_type == VCHR || nvap->na_type == VBLK || 751191783Srmacklem nvap->na_type == VFIFO) { 752191783Srmacklem if (nvap->na_type == VCHR && rdev == 0xffffffff) 753191783Srmacklem nvap->na_type = VFIFO; 754191783Srmacklem if (nvap->na_type != VFIFO && 755191783Srmacklem (error = priv_check_cred(nd->nd_cred, 756191783Srmacklem PRIV_VFS_MKNOD_DEV, 0))) { 757191783Srmacklem vrele(ndp->ni_startdir); 758191783Srmacklem nfsvno_relpathbuf(ndp); 759191783Srmacklem vput(ndp->ni_dvp); 760191783Srmacklem return (error); 761191783Srmacklem } 762191783Srmacklem nvap->na_rdev = rdev; 763191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 764191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 765191783Srmacklem vput(ndp->ni_dvp); 766191783Srmacklem nfsvno_relpathbuf(ndp); 767191783Srmacklem if (error) { 768191783Srmacklem vrele(ndp->ni_startdir); 769191783Srmacklem return (error); 770191783Srmacklem } 771191783Srmacklem } else { 772191783Srmacklem vrele(ndp->ni_startdir); 773191783Srmacklem nfsvno_relpathbuf(ndp); 774191783Srmacklem vput(ndp->ni_dvp); 775191783Srmacklem return (ENXIO); 776191783Srmacklem } 777191783Srmacklem *vpp = ndp->ni_vp; 778191783Srmacklem } else { 779191783Srmacklem /* 780191783Srmacklem * Handle cases where error is already set and/or 781191783Srmacklem * the file exists. 782191783Srmacklem * 1 - clean up the lookup 783191783Srmacklem * 2 - iff !error and na_size set, truncate it 784191783Srmacklem */ 785191783Srmacklem vrele(ndp->ni_startdir); 786191783Srmacklem nfsvno_relpathbuf(ndp); 787191783Srmacklem *vpp = ndp->ni_vp; 788191783Srmacklem if (ndp->ni_dvp == *vpp) 789191783Srmacklem vrele(ndp->ni_dvp); 790191783Srmacklem else 791191783Srmacklem vput(ndp->ni_dvp); 792191783Srmacklem if (!error && nvap->na_size != VNOVAL) { 793191783Srmacklem error = nfsvno_accchk(*vpp, NFSV4ACE_ADDFILE, 794191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 795191783Srmacklem NFSACCCHK_VPISLOCKED); 796191783Srmacklem if (!error) { 797191783Srmacklem tempsize = nvap->na_size; 798191783Srmacklem NFSVNO_ATTRINIT(nvap); 799191783Srmacklem nvap->na_size = tempsize; 800191783Srmacklem error = VOP_SETATTR(*vpp, 801191783Srmacklem &nvap->na_vattr, nd->nd_cred); 802191783Srmacklem } 803191783Srmacklem } 804191783Srmacklem if (error) 805191783Srmacklem vput(*vpp); 806191783Srmacklem } 807191783Srmacklem return (error); 808191783Srmacklem} 809191783Srmacklem 810191783Srmacklem/* 811191783Srmacklem * Do a mknod vnode op. 812191783Srmacklem */ 813191783Srmacklemint 814191783Srmacklemnfsvno_mknod(struct nameidata *ndp, struct nfsvattr *nvap, struct ucred *cred, 815191783Srmacklem struct thread *p) 816191783Srmacklem{ 817191783Srmacklem int error = 0; 818191783Srmacklem enum vtype vtyp; 819191783Srmacklem 820191783Srmacklem vtyp = nvap->na_type; 821191783Srmacklem /* 822191783Srmacklem * Iff doesn't exist, create it. 823191783Srmacklem */ 824191783Srmacklem if (ndp->ni_vp) { 825191783Srmacklem vrele(ndp->ni_startdir); 826191783Srmacklem nfsvno_relpathbuf(ndp); 827191783Srmacklem vput(ndp->ni_dvp); 828191783Srmacklem vrele(ndp->ni_vp); 829191783Srmacklem return (EEXIST); 830191783Srmacklem } 831191783Srmacklem if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) { 832191783Srmacklem vrele(ndp->ni_startdir); 833191783Srmacklem nfsvno_relpathbuf(ndp); 834191783Srmacklem vput(ndp->ni_dvp); 835191783Srmacklem return (NFSERR_BADTYPE); 836191783Srmacklem } 837191783Srmacklem if (vtyp == VSOCK) { 838191783Srmacklem vrele(ndp->ni_startdir); 839191783Srmacklem error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp, 840191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 841191783Srmacklem vput(ndp->ni_dvp); 842191783Srmacklem nfsvno_relpathbuf(ndp); 843191783Srmacklem } else { 844191783Srmacklem if (nvap->na_type != VFIFO && 845191783Srmacklem (error = priv_check_cred(cred, PRIV_VFS_MKNOD_DEV, 0))) { 846191783Srmacklem vrele(ndp->ni_startdir); 847191783Srmacklem nfsvno_relpathbuf(ndp); 848191783Srmacklem vput(ndp->ni_dvp); 849191783Srmacklem return (error); 850191783Srmacklem } 851191783Srmacklem error = VOP_MKNOD(ndp->ni_dvp, &ndp->ni_vp, 852191783Srmacklem &ndp->ni_cnd, &nvap->na_vattr); 853191783Srmacklem vput(ndp->ni_dvp); 854191783Srmacklem nfsvno_relpathbuf(ndp); 855191783Srmacklem if (error) 856191783Srmacklem vrele(ndp->ni_startdir); 857191783Srmacklem /* 858191783Srmacklem * Since VOP_MKNOD returns the ni_vp, I can't 859191783Srmacklem * see any reason to do the lookup. 860191783Srmacklem */ 861191783Srmacklem } 862191783Srmacklem return (error); 863191783Srmacklem} 864191783Srmacklem 865191783Srmacklem/* 866191783Srmacklem * Mkdir vnode op. 867191783Srmacklem */ 868191783Srmacklemint 869191783Srmacklemnfsvno_mkdir(struct nameidata *ndp, struct nfsvattr *nvap, uid_t saved_uid, 870191783Srmacklem struct ucred *cred, struct thread *p, struct nfsexstuff *exp) 871191783Srmacklem{ 872191783Srmacklem int error = 0; 873191783Srmacklem 874191783Srmacklem if (ndp->ni_vp != NULL) { 875191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 876191783Srmacklem vrele(ndp->ni_dvp); 877191783Srmacklem else 878191783Srmacklem vput(ndp->ni_dvp); 879191783Srmacklem vrele(ndp->ni_vp); 880191783Srmacklem return (EEXIST); 881191783Srmacklem } 882191783Srmacklem error = VOP_MKDIR(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 883191783Srmacklem &nvap->na_vattr); 884191783Srmacklem vput(ndp->ni_dvp); 885191783Srmacklem nfsvno_relpathbuf(ndp); 886191783Srmacklem return (error); 887191783Srmacklem} 888191783Srmacklem 889191783Srmacklem/* 890191783Srmacklem * symlink vnode op. 891191783Srmacklem */ 892191783Srmacklemint 893191783Srmacklemnfsvno_symlink(struct nameidata *ndp, struct nfsvattr *nvap, char *pathcp, 894191783Srmacklem int pathlen, int not_v2, uid_t saved_uid, struct ucred *cred, struct thread *p, 895191783Srmacklem struct nfsexstuff *exp) 896191783Srmacklem{ 897191783Srmacklem int error = 0; 898191783Srmacklem 899191783Srmacklem if (ndp->ni_vp) { 900191783Srmacklem vrele(ndp->ni_startdir); 901191783Srmacklem nfsvno_relpathbuf(ndp); 902191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 903191783Srmacklem vrele(ndp->ni_dvp); 904191783Srmacklem else 905191783Srmacklem vput(ndp->ni_dvp); 906191783Srmacklem vrele(ndp->ni_vp); 907191783Srmacklem return (EEXIST); 908191783Srmacklem } 909191783Srmacklem 910191783Srmacklem error = VOP_SYMLINK(ndp->ni_dvp, &ndp->ni_vp, &ndp->ni_cnd, 911191783Srmacklem &nvap->na_vattr, pathcp); 912191783Srmacklem vput(ndp->ni_dvp); 913191783Srmacklem vrele(ndp->ni_startdir); 914191783Srmacklem nfsvno_relpathbuf(ndp); 915191783Srmacklem /* 916191783Srmacklem * Although FreeBSD still had the lookup code in 917191783Srmacklem * it for 7/current, there doesn't seem to be any 918191783Srmacklem * point, since VOP_SYMLINK() returns the ni_vp. 919191783Srmacklem * Just vput it for v2. 920191783Srmacklem */ 921191783Srmacklem if (!not_v2 && !error) 922191783Srmacklem vput(ndp->ni_vp); 923191783Srmacklem return (error); 924191783Srmacklem} 925191783Srmacklem 926191783Srmacklem/* 927191783Srmacklem * Parse symbolic link arguments. 928191783Srmacklem * This function has an ugly side effect. It will MALLOC() an area for 929191783Srmacklem * the symlink and set iov_base to point to it, only if it succeeds. 930191783Srmacklem * So, if it returns with uiop->uio_iov->iov_base != NULL, that must 931191783Srmacklem * be FREE'd later. 932191783Srmacklem */ 933191783Srmacklemint 934191783Srmacklemnfsvno_getsymlink(struct nfsrv_descript *nd, struct nfsvattr *nvap, 935191783Srmacklem struct thread *p, char **pathcpp, int *lenp) 936191783Srmacklem{ 937191783Srmacklem u_int32_t *tl; 938191783Srmacklem char *pathcp = NULL; 939191783Srmacklem int error = 0, len; 940191783Srmacklem struct nfsv2_sattr *sp; 941191783Srmacklem 942191783Srmacklem *pathcpp = NULL; 943191783Srmacklem *lenp = 0; 944191783Srmacklem if ((nd->nd_flag & ND_NFSV3) && 945191783Srmacklem (error = nfsrv_sattr(nd, nvap, NULL, NULL, p))) 946191783Srmacklem goto nfsmout; 947191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 948191783Srmacklem len = fxdr_unsigned(int, *tl); 949191783Srmacklem if (len > NFS_MAXPATHLEN || len <= 0) { 950191783Srmacklem error = EBADRPC; 951191783Srmacklem goto nfsmout; 952191783Srmacklem } 953191783Srmacklem MALLOC(pathcp, caddr_t, len + 1, M_TEMP, M_WAITOK); 954191783Srmacklem error = nfsrv_mtostr(nd, pathcp, len); 955191783Srmacklem if (error) 956191783Srmacklem goto nfsmout; 957191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 958191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 959191783Srmacklem nvap->na_mode = fxdr_unsigned(u_int16_t, sp->sa_mode); 960191783Srmacklem } 961191783Srmacklem *pathcpp = pathcp; 962191783Srmacklem *lenp = len; 963191783Srmacklem return (0); 964191783Srmacklemnfsmout: 965191783Srmacklem if (pathcp) 966191783Srmacklem free(pathcp, M_TEMP); 967191783Srmacklem return (error); 968191783Srmacklem} 969191783Srmacklem 970191783Srmacklem/* 971191783Srmacklem * Remove a non-directory object. 972191783Srmacklem */ 973191783Srmacklemint 974191783Srmacklemnfsvno_removesub(struct nameidata *ndp, int is_v4, struct ucred *cred, 975191783Srmacklem struct thread *p, struct nfsexstuff *exp) 976191783Srmacklem{ 977191783Srmacklem struct vnode *vp; 978191783Srmacklem int error = 0; 979191783Srmacklem 980191783Srmacklem vp = ndp->ni_vp; 981191783Srmacklem if (vp->v_type == VDIR) 982191783Srmacklem error = NFSERR_ISDIR; 983191783Srmacklem else if (is_v4) 984191783Srmacklem error = nfsrv_checkremove(vp, 1, p); 985191783Srmacklem if (!error) 986191783Srmacklem error = VOP_REMOVE(ndp->ni_dvp, vp, &ndp->ni_cnd); 987191783Srmacklem if (ndp->ni_dvp == vp) 988191783Srmacklem vrele(ndp->ni_dvp); 989191783Srmacklem else 990191783Srmacklem vput(ndp->ni_dvp); 991191783Srmacklem vput(vp); 992191783Srmacklem return (error); 993191783Srmacklem} 994191783Srmacklem 995191783Srmacklem/* 996191783Srmacklem * Remove a directory. 997191783Srmacklem */ 998191783Srmacklemint 999191783Srmacklemnfsvno_rmdirsub(struct nameidata *ndp, int is_v4, struct ucred *cred, 1000191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1001191783Srmacklem{ 1002191783Srmacklem struct vnode *vp; 1003191783Srmacklem int error = 0; 1004191783Srmacklem 1005191783Srmacklem vp = ndp->ni_vp; 1006191783Srmacklem if (vp->v_type != VDIR) { 1007191783Srmacklem error = ENOTDIR; 1008191783Srmacklem goto out; 1009191783Srmacklem } 1010191783Srmacklem /* 1011191783Srmacklem * No rmdir "." please. 1012191783Srmacklem */ 1013191783Srmacklem if (ndp->ni_dvp == vp) { 1014191783Srmacklem error = EINVAL; 1015191783Srmacklem goto out; 1016191783Srmacklem } 1017191783Srmacklem /* 1018191783Srmacklem * The root of a mounted filesystem cannot be deleted. 1019191783Srmacklem */ 1020191783Srmacklem if (vp->v_vflag & VV_ROOT) 1021191783Srmacklem error = EBUSY; 1022191783Srmacklemout: 1023191783Srmacklem if (!error) 1024191783Srmacklem error = VOP_RMDIR(ndp->ni_dvp, vp, &ndp->ni_cnd); 1025191783Srmacklem if (ndp->ni_dvp == vp) 1026191783Srmacklem vrele(ndp->ni_dvp); 1027191783Srmacklem else 1028191783Srmacklem vput(ndp->ni_dvp); 1029191783Srmacklem vput(vp); 1030191783Srmacklem return (error); 1031191783Srmacklem} 1032191783Srmacklem 1033191783Srmacklem/* 1034191783Srmacklem * Rename vnode op. 1035191783Srmacklem */ 1036191783Srmacklemint 1037191783Srmacklemnfsvno_rename(struct nameidata *fromndp, struct nameidata *tondp, 1038191783Srmacklem u_int32_t ndstat, u_int32_t ndflag, struct ucred *cred, struct thread *p) 1039191783Srmacklem{ 1040191783Srmacklem struct vnode *fvp, *tvp, *tdvp; 1041191783Srmacklem int error = 0; 1042191783Srmacklem 1043191783Srmacklem fvp = fromndp->ni_vp; 1044191783Srmacklem if (ndstat) { 1045191783Srmacklem vrele(fromndp->ni_dvp); 1046191783Srmacklem vrele(fvp); 1047191783Srmacklem error = ndstat; 1048191783Srmacklem goto out1; 1049191783Srmacklem } 1050191783Srmacklem tdvp = tondp->ni_dvp; 1051191783Srmacklem tvp = tondp->ni_vp; 1052191783Srmacklem if (tvp != NULL) { 1053191783Srmacklem if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1054191783Srmacklem error = (ndflag & ND_NFSV2) ? EISDIR : EEXIST; 1055191783Srmacklem goto out; 1056191783Srmacklem } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1057191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTDIR : EEXIST; 1058191783Srmacklem goto out; 1059191783Srmacklem } 1060191783Srmacklem if (tvp->v_type == VDIR && tvp->v_mountedhere) { 1061191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1062191783Srmacklem goto out; 1063191783Srmacklem } 1064191783Srmacklem 1065191783Srmacklem /* 1066191783Srmacklem * A rename to '.' or '..' results in a prematurely 1067191783Srmacklem * unlocked vnode on FreeBSD5, so I'm just going to fail that 1068191783Srmacklem * here. 1069191783Srmacklem */ 1070191783Srmacklem if ((tondp->ni_cnd.cn_namelen == 1 && 1071191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.') || 1072191783Srmacklem (tondp->ni_cnd.cn_namelen == 2 && 1073191783Srmacklem tondp->ni_cnd.cn_nameptr[0] == '.' && 1074191783Srmacklem tondp->ni_cnd.cn_nameptr[1] == '.')) { 1075191783Srmacklem error = EINVAL; 1076191783Srmacklem goto out; 1077191783Srmacklem } 1078191783Srmacklem } 1079191783Srmacklem if (fvp->v_type == VDIR && fvp->v_mountedhere) { 1080191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1081191783Srmacklem goto out; 1082191783Srmacklem } 1083191783Srmacklem if (fvp->v_mount != tdvp->v_mount) { 1084191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EXDEV; 1085191783Srmacklem goto out; 1086191783Srmacklem } 1087191783Srmacklem if (fvp == tdvp) { 1088191783Srmacklem error = (ndflag & ND_NFSV2) ? ENOTEMPTY : EINVAL; 1089191783Srmacklem goto out; 1090191783Srmacklem } 1091191783Srmacklem if (fvp == tvp) { 1092191783Srmacklem /* 1093191783Srmacklem * If source and destination are the same, there is nothing to 1094191783Srmacklem * do. Set error to -1 to indicate this. 1095191783Srmacklem */ 1096191783Srmacklem error = -1; 1097191783Srmacklem goto out; 1098191783Srmacklem } 1099191783Srmacklem if (ndflag & ND_NFSV4) { 1100191783Srmacklem NFSVOPLOCK(fvp, LK_EXCLUSIVE | LK_RETRY, p); 1101191783Srmacklem error = nfsrv_checkremove(fvp, 0, p); 1102191783Srmacklem NFSVOPUNLOCK(fvp, 0, p); 1103191783Srmacklem if (tvp && !error) 1104191783Srmacklem error = nfsrv_checkremove(tvp, 1, p); 1105191783Srmacklem } else { 1106191783Srmacklem /* 1107191783Srmacklem * For NFSv2 and NFSv3, try to get rid of the delegation, so 1108191783Srmacklem * that the NFSv4 client won't be confused by the rename. 1109191783Srmacklem * Since nfsd_recalldelegation() can only be called on an 1110191783Srmacklem * unlocked vnode at this point and fvp is the file that will 1111191783Srmacklem * still exist after the rename, just do fvp. 1112191783Srmacklem */ 1113191783Srmacklem nfsd_recalldelegation(fvp, p); 1114191783Srmacklem } 1115191783Srmacklemout: 1116191783Srmacklem if (!error) { 1117191783Srmacklem error = VOP_RENAME(fromndp->ni_dvp, fromndp->ni_vp, 1118191783Srmacklem &fromndp->ni_cnd, tondp->ni_dvp, tondp->ni_vp, 1119191783Srmacklem &tondp->ni_cnd); 1120191783Srmacklem } else { 1121191783Srmacklem if (tdvp == tvp) 1122191783Srmacklem vrele(tdvp); 1123191783Srmacklem else 1124191783Srmacklem vput(tdvp); 1125191783Srmacklem if (tvp) 1126191783Srmacklem vput(tvp); 1127191783Srmacklem vrele(fromndp->ni_dvp); 1128191783Srmacklem vrele(fvp); 1129191783Srmacklem if (error == -1) 1130191783Srmacklem error = 0; 1131191783Srmacklem } 1132191783Srmacklem vrele(tondp->ni_startdir); 1133191783Srmacklem nfsvno_relpathbuf(tondp); 1134191783Srmacklemout1: 1135191783Srmacklem vrele(fromndp->ni_startdir); 1136191783Srmacklem nfsvno_relpathbuf(fromndp); 1137191783Srmacklem return (error); 1138191783Srmacklem} 1139191783Srmacklem 1140191783Srmacklem/* 1141191783Srmacklem * Link vnode op. 1142191783Srmacklem */ 1143191783Srmacklemint 1144191783Srmacklemnfsvno_link(struct nameidata *ndp, struct vnode *vp, struct ucred *cred, 1145191783Srmacklem struct thread *p, struct nfsexstuff *exp) 1146191783Srmacklem{ 1147191783Srmacklem struct vnode *xp; 1148191783Srmacklem int error = 0; 1149191783Srmacklem 1150191783Srmacklem xp = ndp->ni_vp; 1151191783Srmacklem if (xp != NULL) { 1152191783Srmacklem error = EEXIST; 1153191783Srmacklem } else { 1154191783Srmacklem xp = ndp->ni_dvp; 1155191783Srmacklem if (vp->v_mount != xp->v_mount) 1156191783Srmacklem error = EXDEV; 1157191783Srmacklem } 1158191783Srmacklem if (!error) { 1159191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 1160191783Srmacklem error = VOP_LINK(ndp->ni_dvp, vp, &ndp->ni_cnd); 1161191783Srmacklem if (ndp->ni_dvp == vp) 1162191783Srmacklem vrele(ndp->ni_dvp); 1163191783Srmacklem else 1164191783Srmacklem vput(ndp->ni_dvp); 1165191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 1166191783Srmacklem } else { 1167191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1168191783Srmacklem vrele(ndp->ni_dvp); 1169191783Srmacklem else 1170191783Srmacklem vput(ndp->ni_dvp); 1171191783Srmacklem if (ndp->ni_vp) 1172191783Srmacklem vrele(ndp->ni_vp); 1173191783Srmacklem } 1174191783Srmacklem nfsvno_relpathbuf(ndp); 1175191783Srmacklem return (error); 1176191783Srmacklem} 1177191783Srmacklem 1178191783Srmacklem/* 1179191783Srmacklem * Do the fsync() appropriate for the commit. 1180191783Srmacklem */ 1181191783Srmacklemint 1182191783Srmacklemnfsvno_fsync(struct vnode *vp, u_int64_t off, int cnt, struct ucred *cred, 1183191783Srmacklem struct thread *td) 1184191783Srmacklem{ 1185191783Srmacklem int error = 0; 1186191783Srmacklem 1187191783Srmacklem if (cnt > MAX_COMMIT_COUNT) { 1188191783Srmacklem /* 1189191783Srmacklem * Give up and do the whole thing 1190191783Srmacklem */ 1191191783Srmacklem if (vp->v_object && 1192191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1193191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1194191783Srmacklem vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC); 1195191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1196191783Srmacklem } 1197191783Srmacklem error = VOP_FSYNC(vp, MNT_WAIT, td); 1198191783Srmacklem } else { 1199191783Srmacklem /* 1200191783Srmacklem * Locate and synchronously write any buffers that fall 1201191783Srmacklem * into the requested range. Note: we are assuming that 1202191783Srmacklem * f_iosize is a power of 2. 1203191783Srmacklem */ 1204191783Srmacklem int iosize = vp->v_mount->mnt_stat.f_iosize; 1205191783Srmacklem int iomask = iosize - 1; 1206191783Srmacklem struct bufobj *bo; 1207191783Srmacklem daddr_t lblkno; 1208191783Srmacklem 1209191783Srmacklem /* 1210191783Srmacklem * Align to iosize boundry, super-align to page boundry. 1211191783Srmacklem */ 1212191783Srmacklem if (off & iomask) { 1213191783Srmacklem cnt += off & iomask; 1214191783Srmacklem off &= ~(u_quad_t)iomask; 1215191783Srmacklem } 1216191783Srmacklem if (off & PAGE_MASK) { 1217191783Srmacklem cnt += off & PAGE_MASK; 1218191783Srmacklem off &= ~(u_quad_t)PAGE_MASK; 1219191783Srmacklem } 1220191783Srmacklem lblkno = off / iosize; 1221191783Srmacklem 1222191783Srmacklem if (vp->v_object && 1223191783Srmacklem (vp->v_object->flags & OBJ_MIGHTBEDIRTY)) { 1224191783Srmacklem VM_OBJECT_LOCK(vp->v_object); 1225191783Srmacklem vm_object_page_clean(vp->v_object, off / PAGE_SIZE, (cnt + PAGE_MASK) / PAGE_SIZE, OBJPC_SYNC); 1226191783Srmacklem VM_OBJECT_UNLOCK(vp->v_object); 1227191783Srmacklem } 1228191783Srmacklem 1229191783Srmacklem bo = &vp->v_bufobj; 1230191783Srmacklem BO_LOCK(bo); 1231191783Srmacklem while (cnt > 0) { 1232191783Srmacklem struct buf *bp; 1233191783Srmacklem 1234191783Srmacklem /* 1235191783Srmacklem * If we have a buffer and it is marked B_DELWRI we 1236191783Srmacklem * have to lock and write it. Otherwise the prior 1237191783Srmacklem * write is assumed to have already been committed. 1238191783Srmacklem * 1239191783Srmacklem * gbincore() can return invalid buffers now so we 1240191783Srmacklem * have to check that bit as well (though B_DELWRI 1241191783Srmacklem * should not be set if B_INVAL is set there could be 1242191783Srmacklem * a race here since we haven't locked the buffer). 1243191783Srmacklem */ 1244191783Srmacklem if ((bp = gbincore(&vp->v_bufobj, lblkno)) != NULL) { 1245191783Srmacklem if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_SLEEPFAIL | 1246191783Srmacklem LK_INTERLOCK, BO_MTX(bo)) == ENOLCK) { 1247191783Srmacklem BO_LOCK(bo); 1248191783Srmacklem continue; /* retry */ 1249191783Srmacklem } 1250191783Srmacklem if ((bp->b_flags & (B_DELWRI|B_INVAL)) == 1251191783Srmacklem B_DELWRI) { 1252191783Srmacklem bremfree(bp); 1253191783Srmacklem bp->b_flags &= ~B_ASYNC; 1254191783Srmacklem bwrite(bp); 1255191783Srmacklem ++nfs_commit_miss; 1256191783Srmacklem } else 1257191783Srmacklem BUF_UNLOCK(bp); 1258191783Srmacklem BO_LOCK(bo); 1259191783Srmacklem } 1260191783Srmacklem ++nfs_commit_blks; 1261191783Srmacklem if (cnt < iosize) 1262191783Srmacklem break; 1263191783Srmacklem cnt -= iosize; 1264191783Srmacklem ++lblkno; 1265191783Srmacklem } 1266191783Srmacklem BO_UNLOCK(bo); 1267191783Srmacklem } 1268191783Srmacklem return (error); 1269191783Srmacklem} 1270191783Srmacklem 1271191783Srmacklem/* 1272191783Srmacklem * Statfs vnode op. 1273191783Srmacklem */ 1274191783Srmacklemint 1275191990Sattilionfsvno_statfs(struct vnode *vp, struct statfs *sf) 1276191783Srmacklem{ 1277191783Srmacklem 1278191990Sattilio return (VFS_STATFS(vp->v_mount, sf)); 1279191783Srmacklem} 1280191783Srmacklem 1281191783Srmacklem/* 1282191783Srmacklem * Do the vnode op stuff for Open. Similar to nfsvno_createsub(), but 1283191783Srmacklem * must handle nfsrv_opencheck() calls after any other access checks. 1284191783Srmacklem */ 1285191783Srmacklemvoid 1286191783Srmacklemnfsvno_open(struct nfsrv_descript *nd, struct nameidata *ndp, 1287191783Srmacklem nfsquad_t clientid, nfsv4stateid_t *stateidp, struct nfsstate *stp, 1288199616Srmacklem int *exclusive_flagp, struct nfsvattr *nvap, int32_t *cverf, int create, 1289191783Srmacklem NFSACL_T *aclp, nfsattrbit_t *attrbitp, struct ucred *cred, struct thread *p, 1290191783Srmacklem struct nfsexstuff *exp, struct vnode **vpp) 1291191783Srmacklem{ 1292191783Srmacklem struct vnode *vp = NULL; 1293191783Srmacklem u_quad_t tempsize; 1294191783Srmacklem struct nfsexstuff nes; 1295191783Srmacklem 1296191783Srmacklem if (ndp->ni_vp == NULL) 1297191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1298191783Srmacklem stateidp, stp, NULL, nd, p, nd->nd_repstat); 1299191783Srmacklem if (!nd->nd_repstat) { 1300191783Srmacklem if (ndp->ni_vp == NULL) { 1301191783Srmacklem vrele(ndp->ni_startdir); 1302191783Srmacklem nd->nd_repstat = VOP_CREATE(ndp->ni_dvp, 1303191783Srmacklem &ndp->ni_vp, &ndp->ni_cnd, &nvap->na_vattr); 1304191783Srmacklem vput(ndp->ni_dvp); 1305191783Srmacklem nfsvno_relpathbuf(ndp); 1306191783Srmacklem if (!nd->nd_repstat) { 1307191783Srmacklem if (*exclusive_flagp) { 1308191783Srmacklem *exclusive_flagp = 0; 1309191783Srmacklem NFSVNO_ATTRINIT(nvap); 1310199616Srmacklem nvap->na_atime.tv_sec = cverf[0]; 1311199616Srmacklem nvap->na_atime.tv_nsec = cverf[1]; 1312191783Srmacklem nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, 1313191783Srmacklem &nvap->na_vattr, cred); 1314191783Srmacklem } else { 1315191783Srmacklem nfsrv_fixattr(nd, ndp->ni_vp, nvap, 1316191783Srmacklem aclp, p, attrbitp, exp); 1317191783Srmacklem } 1318191783Srmacklem } 1319191783Srmacklem vp = ndp->ni_vp; 1320191783Srmacklem } else { 1321191783Srmacklem if (ndp->ni_startdir) 1322191783Srmacklem vrele(ndp->ni_startdir); 1323191783Srmacklem nfsvno_relpathbuf(ndp); 1324191783Srmacklem vp = ndp->ni_vp; 1325191783Srmacklem if (create == NFSV4OPEN_CREATE) { 1326191783Srmacklem if (ndp->ni_dvp == vp) 1327191783Srmacklem vrele(ndp->ni_dvp); 1328191783Srmacklem else 1329191783Srmacklem vput(ndp->ni_dvp); 1330191783Srmacklem } 1331191783Srmacklem if (NFSVNO_ISSETSIZE(nvap) && vp->v_type == VREG) { 1332191783Srmacklem if (ndp->ni_cnd.cn_flags & RDONLY) 1333191783Srmacklem NFSVNO_SETEXRDONLY(&nes); 1334191783Srmacklem else 1335191783Srmacklem NFSVNO_EXINIT(&nes); 1336191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, 1337191783Srmacklem NFSV4ACE_ADDFILE, cred, &nes, p, 1338191783Srmacklem NFSACCCHK_NOOVERRIDE,NFSACCCHK_VPISLOCKED); 1339191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1340191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1341191783Srmacklem if (!nd->nd_repstat) { 1342191783Srmacklem tempsize = nvap->na_size; 1343191783Srmacklem NFSVNO_ATTRINIT(nvap); 1344191783Srmacklem nvap->na_size = tempsize; 1345191783Srmacklem nd->nd_repstat = VOP_SETATTR(vp, 1346191783Srmacklem &nvap->na_vattr, cred); 1347191783Srmacklem } 1348191783Srmacklem } else if (vp->v_type == VREG) { 1349191783Srmacklem nd->nd_repstat = nfsrv_opencheck(clientid, 1350191783Srmacklem stateidp, stp, vp, nd, p, nd->nd_repstat); 1351191783Srmacklem } 1352191783Srmacklem } 1353191783Srmacklem } else { 1354191783Srmacklem if (ndp->ni_cnd.cn_flags & HASBUF) 1355191783Srmacklem nfsvno_relpathbuf(ndp); 1356191783Srmacklem if (ndp->ni_startdir && create == NFSV4OPEN_CREATE) { 1357191783Srmacklem vrele(ndp->ni_startdir); 1358191783Srmacklem if (ndp->ni_dvp == ndp->ni_vp) 1359191783Srmacklem vrele(ndp->ni_dvp); 1360191783Srmacklem else 1361191783Srmacklem vput(ndp->ni_dvp); 1362191783Srmacklem if (ndp->ni_vp) 1363191783Srmacklem vput(ndp->ni_vp); 1364191783Srmacklem } 1365191783Srmacklem } 1366191783Srmacklem *vpp = vp; 1367191783Srmacklem} 1368191783Srmacklem 1369191783Srmacklem/* 1370191783Srmacklem * Updates the file rev and sets the mtime and ctime 1371191783Srmacklem * to the current clock time, returning the va_filerev and va_Xtime 1372191783Srmacklem * values. 1373191783Srmacklem */ 1374191783Srmacklemvoid 1375191783Srmacklemnfsvno_updfilerev(struct vnode *vp, struct nfsvattr *nvap, 1376191783Srmacklem struct ucred *cred, struct thread *p) 1377191783Srmacklem{ 1378191783Srmacklem struct vattr va; 1379191783Srmacklem 1380191783Srmacklem VATTR_NULL(&va); 1381191783Srmacklem getnanotime(&va.va_mtime); 1382191783Srmacklem (void) VOP_SETATTR(vp, &va, cred); 1383191783Srmacklem (void) nfsvno_getattr(vp, nvap, cred, p); 1384191783Srmacklem} 1385191783Srmacklem 1386191783Srmacklem/* 1387191783Srmacklem * Glue routine to nfsv4_fillattr(). 1388191783Srmacklem */ 1389191783Srmacklemint 1390191783Srmacklemnfsvno_fillattr(struct nfsrv_descript *nd, struct vnode *vp, 1391191783Srmacklem struct nfsvattr *nvap, fhandle_t *fhp, int rderror, nfsattrbit_t *attrbitp, 1392191783Srmacklem struct ucred *cred, struct thread *p, int isdgram, int reterr) 1393191783Srmacklem{ 1394191783Srmacklem int error; 1395191783Srmacklem 1396191783Srmacklem error = nfsv4_fillattr(nd, vp, NULL, &nvap->na_vattr, fhp, rderror, 1397191783Srmacklem attrbitp, cred, p, isdgram, reterr); 1398191783Srmacklem return (error); 1399191783Srmacklem} 1400191783Srmacklem 1401191783Srmacklem/* Since the Readdir vnode ops vary, put the entire functions in here. */ 1402191783Srmacklem/* 1403191783Srmacklem * nfs readdir service 1404191783Srmacklem * - mallocs what it thinks is enough to read 1405191783Srmacklem * count rounded up to a multiple of DIRBLKSIZ <= NFS_MAXREADDIR 1406191783Srmacklem * - calls nfsvno_readdir() 1407191783Srmacklem * - loops around building the reply 1408191783Srmacklem * if the output generated exceeds count break out of loop 1409191783Srmacklem * The NFSM_CLGET macro is used here so that the reply will be packed 1410191783Srmacklem * tightly in mbuf clusters. 1411191783Srmacklem * - it only knows that it has encountered eof when the nfsvno_readdir() 1412191783Srmacklem * reads nothing 1413191783Srmacklem * - as such one readdir rpc will return eof false although you are there 1414191783Srmacklem * and then the next will return eof 1415191783Srmacklem * - it trims out records with d_fileno == 0 1416191783Srmacklem * this doesn't matter for Unix clients, but they might confuse clients 1417191783Srmacklem * for other os'. 1418191783Srmacklem * - it trims out records with d_type == DT_WHT 1419191783Srmacklem * these cannot be seen through NFS (unless we extend the protocol) 1420191783Srmacklem * NB: It is tempting to set eof to true if the nfsvno_readdir() reads less 1421191783Srmacklem * than requested, but this may not apply to all filesystems. For 1422191783Srmacklem * example, client NFS does not { although it is never remote mounted 1423191783Srmacklem * anyhow } 1424191783Srmacklem * The alternate call nfsrvd_readdirplus() does lookups as well. 1425191783Srmacklem * PS: The NFS protocol spec. does not clarify what the "count" byte 1426191783Srmacklem * argument is a count of.. just name strings and file id's or the 1427191783Srmacklem * entire reply rpc or ... 1428191783Srmacklem * I tried just file name and id sizes and it confused the Sun client, 1429191783Srmacklem * so I am using the full rpc size now. The "paranoia.." comment refers 1430191783Srmacklem * to including the status longwords that are not a part of the dir. 1431191783Srmacklem * "entry" structures, but are in the rpc. 1432191783Srmacklem */ 1433191783Srmacklemint 1434191783Srmacklemnfsrvd_readdir(struct nfsrv_descript *nd, int isdgram, 1435191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1436191783Srmacklem{ 1437191783Srmacklem struct dirent *dp; 1438191783Srmacklem u_int32_t *tl; 1439191783Srmacklem int dirlen; 1440191783Srmacklem char *cpos, *cend, *rbuf; 1441191783Srmacklem struct nfsvattr at; 1442191783Srmacklem int nlen, error = 0, getret = 1; 1443191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies; 1444191783Srmacklem u_int64_t off, toff, verf; 1445191783Srmacklem u_long *cookies = NULL, *cookiep; 1446191783Srmacklem struct uio io; 1447191783Srmacklem struct iovec iv; 1448191783Srmacklem 1449191783Srmacklem if (nd->nd_repstat) { 1450191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1451191783Srmacklem return (0); 1452191783Srmacklem } 1453191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1454191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1455191783Srmacklem off = fxdr_unsigned(u_quad_t, *tl++); 1456191783Srmacklem } else { 1457191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1458191783Srmacklem off = fxdr_hyper(tl); 1459191783Srmacklem tl += 2; 1460191783Srmacklem verf = fxdr_hyper(tl); 1461191783Srmacklem tl += 2; 1462191783Srmacklem } 1463191783Srmacklem toff = off; 1464191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1465191783Srmacklem if (cnt > NFS_SRVMAXDATA(nd)) 1466191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1467191783Srmacklem siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1468191783Srmacklem fullsiz = siz; 1469191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1470191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, 1471191783Srmacklem p); 1472191783Srmacklem#if 0 1473191783Srmacklem /* 1474191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1475191783Srmacklem * since it is not supposed to change when entries are 1476191783Srmacklem * removed/added unless that offset cookies returned to 1477191783Srmacklem * the client are no longer valid. 1478191783Srmacklem */ 1479191783Srmacklem if (!nd->nd_repstat && toff && verf != at.na_filerev) 1480191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1481191783Srmacklem#endif 1482191783Srmacklem } 1483191783Srmacklem if (!nd->nd_repstat) 1484191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, NFSV4ACE_SEARCH, 1485191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1486191783Srmacklem NFSACCCHK_VPISLOCKED); 1487191783Srmacklem if (nd->nd_repstat) { 1488191783Srmacklem vput(vp); 1489191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1490191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1491191783Srmacklem return (0); 1492191783Srmacklem } 1493191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 1494191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1495191783Srmacklemagain: 1496191783Srmacklem eofflag = 0; 1497191783Srmacklem if (cookies) { 1498191783Srmacklem free((caddr_t)cookies, M_TEMP); 1499191783Srmacklem cookies = NULL; 1500191783Srmacklem } 1501191783Srmacklem 1502191783Srmacklem iv.iov_base = rbuf; 1503191783Srmacklem iv.iov_len = siz; 1504191783Srmacklem io.uio_iov = &iv; 1505191783Srmacklem io.uio_iovcnt = 1; 1506191783Srmacklem io.uio_offset = (off_t)off; 1507191783Srmacklem io.uio_resid = siz; 1508191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1509191783Srmacklem io.uio_rw = UIO_READ; 1510191783Srmacklem io.uio_td = NULL; 1511191783Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, p); 1512191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1513191783Srmacklem &cookies); 1514191783Srmacklem NFSVOPUNLOCK(vp, 0, p); 1515191783Srmacklem off = (u_int64_t)io.uio_offset; 1516191783Srmacklem if (io.uio_resid) 1517191783Srmacklem siz -= io.uio_resid; 1518191783Srmacklem 1519191783Srmacklem if (!cookies && !nd->nd_repstat) 1520191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1521191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1522191783Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p); 1523191783Srmacklem if (!nd->nd_repstat) 1524191783Srmacklem nd->nd_repstat = getret; 1525191783Srmacklem } 1526191783Srmacklem 1527191783Srmacklem /* 1528191783Srmacklem * Handles the failed cases. nd->nd_repstat == 0 past here. 1529191783Srmacklem */ 1530191783Srmacklem if (nd->nd_repstat) { 1531191783Srmacklem vrele(vp); 1532191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1533191783Srmacklem if (cookies) 1534191783Srmacklem free((caddr_t)cookies, M_TEMP); 1535191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1536191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1537191783Srmacklem return (0); 1538191783Srmacklem } 1539191783Srmacklem /* 1540191783Srmacklem * If nothing read, return eof 1541191783Srmacklem * rpc reply 1542191783Srmacklem */ 1543191783Srmacklem if (siz == 0) { 1544191783Srmacklem vrele(vp); 1545191783Srmacklem if (nd->nd_flag & ND_NFSV2) { 1546191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1547191783Srmacklem } else { 1548191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1549191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1550191783Srmacklem txdr_hyper(at.na_filerev, tl); 1551191783Srmacklem tl += 2; 1552191783Srmacklem } 1553191783Srmacklem *tl++ = newnfs_false; 1554191783Srmacklem *tl = newnfs_true; 1555191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1556191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1557191783Srmacklem return (0); 1558191783Srmacklem } 1559191783Srmacklem 1560191783Srmacklem /* 1561191783Srmacklem * Check for degenerate cases of nothing useful read. 1562191783Srmacklem * If so go try again 1563191783Srmacklem */ 1564191783Srmacklem cpos = rbuf; 1565191783Srmacklem cend = rbuf + siz; 1566191783Srmacklem dp = (struct dirent *)cpos; 1567191783Srmacklem cookiep = cookies; 1568191783Srmacklem 1569191783Srmacklem /* 1570191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1571191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1572191783Srmacklem * skip over the records that precede the requested offset. This 1573191783Srmacklem * requires the assumption that file offset cookies monotonically 1574191783Srmacklem * increase. 1575191783Srmacklem */ 1576191783Srmacklem while (cpos < cend && ncookies > 0 && 1577191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1578191783Srmacklem ((u_quad_t)(*cookiep)) <= toff)) { 1579191783Srmacklem cpos += dp->d_reclen; 1580191783Srmacklem dp = (struct dirent *)cpos; 1581191783Srmacklem cookiep++; 1582191783Srmacklem ncookies--; 1583191783Srmacklem } 1584191783Srmacklem if (cpos >= cend || ncookies == 0) { 1585191783Srmacklem siz = fullsiz; 1586191783Srmacklem toff = off; 1587191783Srmacklem goto again; 1588191783Srmacklem } 1589191783Srmacklem 1590191783Srmacklem /* 1591191783Srmacklem * dirlen is the size of the reply, including all XDR and must 1592191783Srmacklem * not exceed cnt. For NFSv2, RFC1094 didn't clearly indicate 1593191783Srmacklem * if the XDR should be included in "count", but to be safe, we do. 1594191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now.) 1595191783Srmacklem */ 1596191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1597191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1598191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1599191783Srmacklem txdr_hyper(at.na_filerev, tl); 1600191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1601191783Srmacklem } else { 1602191783Srmacklem dirlen = 2 * NFSX_UNSIGNED; 1603191783Srmacklem } 1604191783Srmacklem 1605191783Srmacklem /* Loop through the records and build reply */ 1606191783Srmacklem while (cpos < cend && ncookies > 0) { 1607191783Srmacklem nlen = dp->d_namlen; 1608191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1609191783Srmacklem nlen <= NFS_MAXNAMLEN) { 1610191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1611191783Srmacklem dirlen += (6*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1612191783Srmacklem else 1613191783Srmacklem dirlen += (4*NFSX_UNSIGNED + NFSM_RNDUP(nlen)); 1614191783Srmacklem if (dirlen > cnt) { 1615191783Srmacklem eofflag = 0; 1616191783Srmacklem break; 1617191783Srmacklem } 1618191783Srmacklem 1619191783Srmacklem /* 1620191783Srmacklem * Build the directory record xdr from 1621191783Srmacklem * the dirent entry. 1622191783Srmacklem */ 1623191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1624191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1625191783Srmacklem *tl++ = newnfs_true; 1626191783Srmacklem *tl++ = 0; 1627191783Srmacklem } else { 1628191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1629191783Srmacklem *tl++ = newnfs_true; 1630191783Srmacklem } 1631191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1632191783Srmacklem (void) nfsm_strtom(nd, dp->d_name, nlen); 1633191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1634191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1635191783Srmacklem *tl++ = 0; 1636191783Srmacklem } else 1637191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1638191783Srmacklem *tl = txdr_unsigned(*cookiep); 1639191783Srmacklem } 1640191783Srmacklem cpos += dp->d_reclen; 1641191783Srmacklem dp = (struct dirent *)cpos; 1642191783Srmacklem cookiep++; 1643191783Srmacklem ncookies--; 1644191783Srmacklem } 1645191783Srmacklem if (cpos < cend) 1646191783Srmacklem eofflag = 0; 1647191783Srmacklem vrele(vp); 1648191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1649191783Srmacklem *tl++ = newnfs_false; 1650191783Srmacklem if (eofflag) 1651191783Srmacklem *tl = newnfs_true; 1652191783Srmacklem else 1653191783Srmacklem *tl = newnfs_false; 1654191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 1655191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 1656191783Srmacklem return (0); 1657191783Srmacklemnfsmout: 1658191783Srmacklem vput(vp); 1659191783Srmacklem return (error); 1660191783Srmacklem} 1661191783Srmacklem 1662191783Srmacklem/* 1663191783Srmacklem * Readdirplus for V3 and Readdir for V4. 1664191783Srmacklem */ 1665191783Srmacklemint 1666191783Srmacklemnfsrvd_readdirplus(struct nfsrv_descript *nd, int isdgram, 1667191783Srmacklem struct vnode *vp, struct thread *p, struct nfsexstuff *exp) 1668191783Srmacklem{ 1669191783Srmacklem struct dirent *dp; 1670191783Srmacklem u_int32_t *tl; 1671191783Srmacklem int dirlen; 1672191783Srmacklem char *cpos, *cend, *rbuf; 1673191783Srmacklem struct vnode *nvp; 1674191783Srmacklem fhandle_t nfh; 1675191783Srmacklem struct nfsvattr nva, at, *nvap = &nva; 1676191783Srmacklem struct mbuf *mb0, *mb1; 1677191783Srmacklem struct nfsreferral *refp; 1678199715Srmacklem int nlen, r, error = 0, getret = 1, usevget = 1; 1679191783Srmacklem int siz, cnt, fullsiz, eofflag, ncookies, entrycnt; 1680191783Srmacklem caddr_t bpos0, bpos1; 1681191783Srmacklem u_int64_t off, toff, verf; 1682191783Srmacklem u_long *cookies = NULL, *cookiep; 1683191783Srmacklem nfsattrbit_t attrbits, rderrbits, savbits; 1684191783Srmacklem struct uio io; 1685191783Srmacklem struct iovec iv; 1686199715Srmacklem struct componentname cn; 1687191783Srmacklem 1688191783Srmacklem if (nd->nd_repstat) { 1689191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1690191783Srmacklem return (0); 1691191783Srmacklem } 1692191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 1693191783Srmacklem off = fxdr_hyper(tl); 1694191783Srmacklem toff = off; 1695191783Srmacklem tl += 2; 1696191783Srmacklem verf = fxdr_hyper(tl); 1697191783Srmacklem tl += 2; 1698191783Srmacklem siz = fxdr_unsigned(int, *tl++); 1699191783Srmacklem cnt = fxdr_unsigned(int, *tl); 1700191783Srmacklem 1701191783Srmacklem /* 1702191783Srmacklem * Use the server's maximum data transfer size as the upper bound 1703191783Srmacklem * on reply datalen. 1704191783Srmacklem */ 1705191783Srmacklem if (cnt > NFS_SRVMAXDATA(nd)) 1706191783Srmacklem cnt = NFS_SRVMAXDATA(nd); 1707191783Srmacklem 1708191783Srmacklem /* 1709191783Srmacklem * siz is a "hint" of how much directory information (name, fileid, 1710191783Srmacklem * cookie) should be in the reply. At least one client "hints" 0, 1711191783Srmacklem * so I set it to cnt for that case. I also round it up to the 1712191783Srmacklem * next multiple of DIRBLKSIZ. 1713191783Srmacklem */ 1714191783Srmacklem if (siz == 0) 1715191783Srmacklem siz = cnt; 1716191783Srmacklem siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1)); 1717191783Srmacklem 1718191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1719191783Srmacklem error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1720191783Srmacklem if (error) 1721191783Srmacklem goto nfsmout; 1722191783Srmacklem NFSSET_ATTRBIT(&savbits, &attrbits); 1723191783Srmacklem NFSCLRNOTFILLABLE_ATTRBIT(&attrbits); 1724191783Srmacklem NFSZERO_ATTRBIT(&rderrbits); 1725191783Srmacklem NFSSETBIT_ATTRBIT(&rderrbits, NFSATTRBIT_RDATTRERROR); 1726191783Srmacklem } else { 1727191783Srmacklem NFSZERO_ATTRBIT(&attrbits); 1728191783Srmacklem } 1729191783Srmacklem fullsiz = siz; 1730191783Srmacklem nd->nd_repstat = getret = nfsvno_getattr(vp, &at, nd->nd_cred, p); 1731191783Srmacklem if (!nd->nd_repstat) { 1732191783Srmacklem if (off && verf != at.na_filerev) { 1733191783Srmacklem /* 1734191783Srmacklem * va_filerev is not sufficient as a cookie verifier, 1735191783Srmacklem * since it is not supposed to change when entries are 1736191783Srmacklem * removed/added unless that offset cookies returned to 1737191783Srmacklem * the client are no longer valid. 1738191783Srmacklem */ 1739191783Srmacklem#if 0 1740191783Srmacklem if (nd->nd_flag & ND_NFSV4) { 1741191783Srmacklem nd->nd_repstat = NFSERR_NOTSAME; 1742191783Srmacklem } else { 1743191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1744191783Srmacklem } 1745191783Srmacklem#endif 1746191783Srmacklem } else if ((nd->nd_flag & ND_NFSV4) && off == 0 && verf != 0) { 1747191783Srmacklem nd->nd_repstat = NFSERR_BAD_COOKIE; 1748191783Srmacklem } 1749191783Srmacklem } 1750191783Srmacklem if (!nd->nd_repstat && vp->v_type != VDIR) 1751191783Srmacklem nd->nd_repstat = NFSERR_NOTDIR; 1752191783Srmacklem if (!nd->nd_repstat && cnt == 0) 1753191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 1754191783Srmacklem if (!nd->nd_repstat) 1755191783Srmacklem nd->nd_repstat = nfsvno_accchk(vp, NFSV4ACE_SEARCH, 1756191783Srmacklem nd->nd_cred, exp, p, NFSACCCHK_NOOVERRIDE, 1757191783Srmacklem NFSACCCHK_VPISLOCKED); 1758191783Srmacklem if (nd->nd_repstat) { 1759191783Srmacklem vput(vp); 1760191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1761191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1762191783Srmacklem return (0); 1763191783Srmacklem } 1764191783Srmacklem 1765191783Srmacklem MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK); 1766191783Srmacklemagain: 1767191783Srmacklem eofflag = 0; 1768191783Srmacklem if (cookies) { 1769191783Srmacklem free((caddr_t)cookies, M_TEMP); 1770191783Srmacklem cookies = NULL; 1771191783Srmacklem } 1772191783Srmacklem 1773191783Srmacklem iv.iov_base = rbuf; 1774191783Srmacklem iv.iov_len = siz; 1775191783Srmacklem io.uio_iov = &iv; 1776191783Srmacklem io.uio_iovcnt = 1; 1777191783Srmacklem io.uio_offset = (off_t)off; 1778191783Srmacklem io.uio_resid = siz; 1779191783Srmacklem io.uio_segflg = UIO_SYSSPACE; 1780191783Srmacklem io.uio_rw = UIO_READ; 1781191783Srmacklem io.uio_td = NULL; 1782191783Srmacklem nd->nd_repstat = VOP_READDIR(vp, &io, nd->nd_cred, &eofflag, &ncookies, 1783191783Srmacklem &cookies); 1784191783Srmacklem off = (u_int64_t)io.uio_offset; 1785191783Srmacklem if (io.uio_resid) 1786191783Srmacklem siz -= io.uio_resid; 1787191783Srmacklem 1788191783Srmacklem getret = nfsvno_getattr(vp, &at, nd->nd_cred, p); 1789191783Srmacklem 1790191783Srmacklem if (!cookies && !nd->nd_repstat) 1791191783Srmacklem nd->nd_repstat = NFSERR_PERM; 1792191783Srmacklem if (!nd->nd_repstat) 1793191783Srmacklem nd->nd_repstat = getret; 1794191783Srmacklem if (nd->nd_repstat) { 1795199715Srmacklem vput(vp); 1796191783Srmacklem if (cookies) 1797191783Srmacklem free((caddr_t)cookies, M_TEMP); 1798191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1799191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1800191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1801191783Srmacklem return (0); 1802191783Srmacklem } 1803191783Srmacklem /* 1804191783Srmacklem * If nothing read, return eof 1805191783Srmacklem * rpc reply 1806191783Srmacklem */ 1807191783Srmacklem if (siz == 0) { 1808199715Srmacklem vput(vp); 1809191783Srmacklem if (nd->nd_flag & ND_NFSV3) 1810191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1811191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1812191783Srmacklem txdr_hyper(at.na_filerev, tl); 1813191783Srmacklem tl += 2; 1814191783Srmacklem *tl++ = newnfs_false; 1815191783Srmacklem *tl = newnfs_true; 1816191783Srmacklem free((caddr_t)cookies, M_TEMP); 1817191783Srmacklem free((caddr_t)rbuf, M_TEMP); 1818191783Srmacklem return (0); 1819191783Srmacklem } 1820191783Srmacklem 1821191783Srmacklem /* 1822191783Srmacklem * Check for degenerate cases of nothing useful read. 1823191783Srmacklem * If so go try again 1824191783Srmacklem */ 1825191783Srmacklem cpos = rbuf; 1826191783Srmacklem cend = rbuf + siz; 1827191783Srmacklem dp = (struct dirent *)cpos; 1828191783Srmacklem cookiep = cookies; 1829191783Srmacklem 1830191783Srmacklem /* 1831191783Srmacklem * For some reason FreeBSD's ufs_readdir() chooses to back the 1832191783Srmacklem * directory offset up to a block boundary, so it is necessary to 1833191783Srmacklem * skip over the records that precede the requested offset. This 1834191783Srmacklem * requires the assumption that file offset cookies monotonically 1835191783Srmacklem * increase. 1836191783Srmacklem */ 1837191783Srmacklem while (cpos < cend && ncookies > 0 && 1838191783Srmacklem (dp->d_fileno == 0 || dp->d_type == DT_WHT || 1839191783Srmacklem ((u_quad_t)(*cookiep)) <= toff || 1840191783Srmacklem ((nd->nd_flag & ND_NFSV4) && 1841191783Srmacklem ((dp->d_namlen == 1 && dp->d_name[0] == '.') || 1842191783Srmacklem (dp->d_namlen==2 && dp->d_name[0]=='.' && dp->d_name[1]=='.'))))) { 1843191783Srmacklem cpos += dp->d_reclen; 1844191783Srmacklem dp = (struct dirent *)cpos; 1845191783Srmacklem cookiep++; 1846191783Srmacklem ncookies--; 1847191783Srmacklem } 1848191783Srmacklem if (cpos >= cend || ncookies == 0) { 1849191783Srmacklem siz = fullsiz; 1850191783Srmacklem toff = off; 1851191783Srmacklem goto again; 1852191783Srmacklem } 1853199715Srmacklem NFSVOPUNLOCK(vp, 0, p); 1854191783Srmacklem 1855191783Srmacklem /* 1856191783Srmacklem * Save this position, in case there is an error before one entry 1857191783Srmacklem * is created. 1858191783Srmacklem */ 1859191783Srmacklem mb0 = nd->nd_mb; 1860191783Srmacklem bpos0 = nd->nd_bpos; 1861191783Srmacklem 1862191783Srmacklem /* 1863191783Srmacklem * Fill in the first part of the reply. 1864191783Srmacklem * dirlen is the reply length in bytes and cannot exceed cnt. 1865191783Srmacklem * (Include the two booleans at the end of the reply in dirlen now, 1866191783Srmacklem * so we recognize when we have exceeded cnt.) 1867191783Srmacklem */ 1868191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1869191783Srmacklem dirlen = NFSX_V3POSTOPATTR + NFSX_VERF + 2 * NFSX_UNSIGNED; 1870191783Srmacklem nfsrv_postopattr(nd, getret, &at); 1871191783Srmacklem } else { 1872191783Srmacklem dirlen = NFSX_VERF + 2 * NFSX_UNSIGNED; 1873191783Srmacklem } 1874191783Srmacklem NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1875191783Srmacklem txdr_hyper(at.na_filerev, tl); 1876191783Srmacklem 1877191783Srmacklem /* 1878191783Srmacklem * Save this position, in case there is an empty reply needed. 1879191783Srmacklem */ 1880191783Srmacklem mb1 = nd->nd_mb; 1881191783Srmacklem bpos1 = nd->nd_bpos; 1882191783Srmacklem 1883191783Srmacklem /* Loop through the records and build reply */ 1884191783Srmacklem entrycnt = 0; 1885191783Srmacklem while (cpos < cend && ncookies > 0 && dirlen < cnt) { 1886191783Srmacklem nlen = dp->d_namlen; 1887191783Srmacklem if (dp->d_fileno != 0 && dp->d_type != DT_WHT && 1888191783Srmacklem nlen <= NFS_MAXNAMLEN && 1889191783Srmacklem ((nd->nd_flag & ND_NFSV3) || nlen > 2 || 1890191783Srmacklem (nlen==2 && (dp->d_name[0]!='.' || dp->d_name[1]!='.')) 1891191783Srmacklem || (nlen == 1 && dp->d_name[0] != '.'))) { 1892191783Srmacklem /* 1893191783Srmacklem * Save the current position in the reply, in case 1894191783Srmacklem * this entry exceeds cnt. 1895191783Srmacklem */ 1896191783Srmacklem mb1 = nd->nd_mb; 1897191783Srmacklem bpos1 = nd->nd_bpos; 1898191783Srmacklem 1899191783Srmacklem /* 1900191783Srmacklem * For readdir_and_lookup get the vnode using 1901191783Srmacklem * the file number. 1902191783Srmacklem */ 1903191783Srmacklem nvp = NULL; 1904191783Srmacklem refp = NULL; 1905191783Srmacklem r = 0; 1906191783Srmacklem if ((nd->nd_flag & ND_NFSV3) || 1907191783Srmacklem NFSNONZERO_ATTRBIT(&savbits)) { 1908191783Srmacklem if (nd->nd_flag & ND_NFSV4) 1909191783Srmacklem refp = nfsv4root_getreferral(NULL, 1910191783Srmacklem vp, dp->d_fileno); 1911199715Srmacklem if (refp == NULL) { 1912199715Srmacklem if (usevget) 1913199715Srmacklem r = VFS_VGET(vp->v_mount, 1914199715Srmacklem dp->d_fileno, LK_EXCLUSIVE, 1915199715Srmacklem &nvp); 1916199715Srmacklem else 1917199715Srmacklem r = EOPNOTSUPP; 1918199715Srmacklem if (r == EOPNOTSUPP) { 1919199715Srmacklem if (usevget) { 1920199715Srmacklem usevget = 0; 1921199715Srmacklem cn.cn_nameiop = LOOKUP; 1922199715Srmacklem cn.cn_lkflags = 1923199715Srmacklem LK_EXCLUSIVE | 1924199715Srmacklem LK_RETRY; 1925199715Srmacklem cn.cn_cred = 1926199715Srmacklem nd->nd_cred; 1927199715Srmacklem cn.cn_thread = p; 1928199715Srmacklem } 1929199715Srmacklem cn.cn_nameptr = dp->d_name; 1930199715Srmacklem cn.cn_namelen = nlen; 1931199715Srmacklem cn.cn_flags = ISLASTCN | 1932199715Srmacklem NOFOLLOW | LOCKLEAF | 1933199715Srmacklem MPSAFE; 1934199715Srmacklem if (nlen == 2 && 1935199715Srmacklem dp->d_name[0] == '.' && 1936199715Srmacklem dp->d_name[1] == '.') 1937199715Srmacklem cn.cn_flags |= 1938199715Srmacklem ISDOTDOT; 1939199715Srmacklem if (!VOP_ISLOCKED(vp)) 1940199715Srmacklem vn_lock(vp, 1941199715Srmacklem LK_EXCLUSIVE | 1942199715Srmacklem LK_RETRY); 1943199715Srmacklem r = VOP_LOOKUP(vp, &nvp, &cn); 1944199715Srmacklem } 1945199715Srmacklem } 1946191783Srmacklem if (!r) { 1947191783Srmacklem if (refp == NULL && 1948191783Srmacklem ((nd->nd_flag & ND_NFSV3) || 1949191783Srmacklem NFSNONZERO_ATTRBIT(&attrbits))) { 1950191783Srmacklem r = nfsvno_getfh(nvp, &nfh, p); 1951191783Srmacklem if (!r) 1952191783Srmacklem r = nfsvno_getattr(nvp, nvap, 1953191783Srmacklem nd->nd_cred, p); 1954191783Srmacklem } 1955191783Srmacklem } else { 1956191783Srmacklem nvp = NULL; 1957191783Srmacklem } 1958191783Srmacklem if (r) { 1959191783Srmacklem if (!NFSISSET_ATTRBIT(&attrbits, 1960191783Srmacklem NFSATTRBIT_RDATTRERROR)) { 1961191783Srmacklem if (nvp != NULL) 1962191783Srmacklem vput(nvp); 1963191783Srmacklem nd->nd_repstat = r; 1964191783Srmacklem break; 1965191783Srmacklem } 1966191783Srmacklem } 1967191783Srmacklem } 1968191783Srmacklem 1969191783Srmacklem /* 1970191783Srmacklem * Build the directory record xdr 1971191783Srmacklem */ 1972191783Srmacklem if (nd->nd_flag & ND_NFSV3) { 1973191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1974191783Srmacklem *tl++ = newnfs_true; 1975191783Srmacklem *tl++ = 0; 1976191783Srmacklem *tl = txdr_unsigned(dp->d_fileno); 1977191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 1978191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1979191783Srmacklem *tl++ = 0; 1980191783Srmacklem *tl = txdr_unsigned(*cookiep); 1981191783Srmacklem nfsrv_postopattr(nd, 0, nvap); 1982191783Srmacklem dirlen += nfsm_fhtom(nd,(u_int8_t *)&nfh,0,1); 1983191783Srmacklem dirlen += (5*NFSX_UNSIGNED+NFSX_V3POSTOPATTR); 1984191783Srmacklem if (nvp != NULL) 1985191783Srmacklem vput(nvp); 1986191783Srmacklem } else { 1987191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1988191783Srmacklem *tl++ = newnfs_true; 1989191783Srmacklem *tl++ = 0; 1990191783Srmacklem *tl = txdr_unsigned(*cookiep); 1991191783Srmacklem dirlen += nfsm_strtom(nd, dp->d_name, nlen); 1992191783Srmacklem if (nvp != NULL) 1993191783Srmacklem NFSVOPUNLOCK(nvp, 0, p); 1994191783Srmacklem if (refp != NULL) { 1995191783Srmacklem dirlen += nfsrv_putreferralattr(nd, 1996191783Srmacklem &savbits, refp, 0, 1997191783Srmacklem &nd->nd_repstat); 1998191783Srmacklem if (nd->nd_repstat) { 1999191783Srmacklem if (nvp != NULL) 2000191783Srmacklem vrele(nvp); 2001191783Srmacklem break; 2002191783Srmacklem } 2003191783Srmacklem } else if (r) { 2004191783Srmacklem dirlen += nfsvno_fillattr(nd, nvp, nvap, 2005191783Srmacklem &nfh, r, &rderrbits, nd->nd_cred, 2006191783Srmacklem p, isdgram, 0); 2007191783Srmacklem } else { 2008191783Srmacklem dirlen += nfsvno_fillattr(nd, nvp, nvap, 2009191783Srmacklem &nfh, r, &attrbits, nd->nd_cred, 2010191783Srmacklem p, isdgram, 0); 2011191783Srmacklem } 2012191783Srmacklem if (nvp != NULL) 2013191783Srmacklem vrele(nvp); 2014191783Srmacklem dirlen += (3 * NFSX_UNSIGNED); 2015191783Srmacklem } 2016191783Srmacklem if (dirlen <= cnt) 2017191783Srmacklem entrycnt++; 2018191783Srmacklem } 2019191783Srmacklem cpos += dp->d_reclen; 2020191783Srmacklem dp = (struct dirent *)cpos; 2021191783Srmacklem cookiep++; 2022191783Srmacklem ncookies--; 2023191783Srmacklem } 2024199715Srmacklem if (!usevget && VOP_ISLOCKED(vp)) 2025199715Srmacklem vput(vp); 2026199715Srmacklem else 2027199715Srmacklem vrele(vp); 2028191783Srmacklem 2029191783Srmacklem /* 2030191783Srmacklem * If dirlen > cnt, we must strip off the last entry. If that 2031191783Srmacklem * results in an empty reply, report NFSERR_TOOSMALL. 2032191783Srmacklem */ 2033191783Srmacklem if (dirlen > cnt || nd->nd_repstat) { 2034191783Srmacklem if (!nd->nd_repstat && entrycnt == 0) 2035191783Srmacklem nd->nd_repstat = NFSERR_TOOSMALL; 2036191783Srmacklem if (nd->nd_repstat) 2037191783Srmacklem newnfs_trimtrailing(nd, mb0, bpos0); 2038191783Srmacklem else 2039191783Srmacklem newnfs_trimtrailing(nd, mb1, bpos1); 2040191783Srmacklem eofflag = 0; 2041191783Srmacklem } else if (cpos < cend) 2042191783Srmacklem eofflag = 0; 2043191783Srmacklem if (!nd->nd_repstat) { 2044191783Srmacklem NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2045191783Srmacklem *tl++ = newnfs_false; 2046191783Srmacklem if (eofflag) 2047191783Srmacklem *tl = newnfs_true; 2048191783Srmacklem else 2049191783Srmacklem *tl = newnfs_false; 2050191783Srmacklem } 2051191783Srmacklem FREE((caddr_t)cookies, M_TEMP); 2052191783Srmacklem FREE((caddr_t)rbuf, M_TEMP); 2053191783Srmacklem return (0); 2054191783Srmacklemnfsmout: 2055191783Srmacklem vput(vp); 2056191783Srmacklem return (error); 2057191783Srmacklem} 2058191783Srmacklem 2059191783Srmacklem/* 2060191783Srmacklem * Get the settable attributes out of the mbuf list. 2061191783Srmacklem * (Return 0 or EBADRPC) 2062191783Srmacklem */ 2063191783Srmacklemint 2064191783Srmacklemnfsrv_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2065191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2066191783Srmacklem{ 2067191783Srmacklem u_int32_t *tl; 2068191783Srmacklem struct nfsv2_sattr *sp; 2069191783Srmacklem struct timeval curtime; 2070191783Srmacklem int error = 0, toclient = 0; 2071191783Srmacklem 2072191783Srmacklem switch (nd->nd_flag & (ND_NFSV2 | ND_NFSV3 | ND_NFSV4)) { 2073191783Srmacklem case ND_NFSV2: 2074191783Srmacklem NFSM_DISSECT(sp, struct nfsv2_sattr *, NFSX_V2SATTR); 2075191783Srmacklem /* 2076191783Srmacklem * Some old clients didn't fill in the high order 16bits. 2077191783Srmacklem * --> check the low order 2 bytes for 0xffff 2078191783Srmacklem */ 2079191783Srmacklem if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff) 2080191783Srmacklem nvap->na_mode = nfstov_mode(sp->sa_mode); 2081191783Srmacklem if (sp->sa_uid != newnfs_xdrneg1) 2082191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, sp->sa_uid); 2083191783Srmacklem if (sp->sa_gid != newnfs_xdrneg1) 2084191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, sp->sa_gid); 2085191783Srmacklem if (sp->sa_size != newnfs_xdrneg1) 2086191783Srmacklem nvap->na_size = fxdr_unsigned(u_quad_t, sp->sa_size); 2087191783Srmacklem if (sp->sa_atime.nfsv2_sec != newnfs_xdrneg1) { 2088191783Srmacklem#ifdef notyet 2089191783Srmacklem fxdr_nfsv2time(&sp->sa_atime, &nvap->na_atime); 2090191783Srmacklem#else 2091191783Srmacklem nvap->na_atime.tv_sec = 2092191783Srmacklem fxdr_unsigned(u_int32_t,sp->sa_atime.nfsv2_sec); 2093191783Srmacklem nvap->na_atime.tv_nsec = 0; 2094191783Srmacklem#endif 2095191783Srmacklem } 2096191783Srmacklem if (sp->sa_mtime.nfsv2_sec != newnfs_xdrneg1) 2097191783Srmacklem fxdr_nfsv2time(&sp->sa_mtime, &nvap->na_mtime); 2098191783Srmacklem break; 2099191783Srmacklem case ND_NFSV3: 2100191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2101191783Srmacklem if (*tl == newnfs_true) { 2102191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2103191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2104191783Srmacklem } 2105191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2106191783Srmacklem if (*tl == newnfs_true) { 2107191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2108191783Srmacklem nvap->na_uid = fxdr_unsigned(uid_t, *tl); 2109191783Srmacklem } 2110191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2111191783Srmacklem if (*tl == newnfs_true) { 2112191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2113191783Srmacklem nvap->na_gid = fxdr_unsigned(gid_t, *tl); 2114191783Srmacklem } 2115191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2116191783Srmacklem if (*tl == newnfs_true) { 2117191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2118191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2119191783Srmacklem } 2120191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2121191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2122191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2123191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2124191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_atime); 2125191783Srmacklem toclient = 1; 2126191783Srmacklem break; 2127191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2128191783Srmacklem NFSGETTIME(&curtime); 2129191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2130191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2131191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2132191783Srmacklem break; 2133191783Srmacklem }; 2134191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2135191783Srmacklem switch (fxdr_unsigned(int, *tl)) { 2136191783Srmacklem case NFSV3SATTRTIME_TOCLIENT: 2137191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2138191783Srmacklem fxdr_nfsv3time(tl, &nvap->na_mtime); 2139191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2140191783Srmacklem break; 2141191783Srmacklem case NFSV3SATTRTIME_TOSERVER: 2142191783Srmacklem NFSGETTIME(&curtime); 2143191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2144191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2145191783Srmacklem if (!toclient) 2146191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2147191783Srmacklem break; 2148191783Srmacklem }; 2149191783Srmacklem break; 2150191783Srmacklem case ND_NFSV4: 2151191783Srmacklem error = nfsv4_sattr(nd, nvap, attrbitp, aclp, p); 2152191783Srmacklem }; 2153191783Srmacklemnfsmout: 2154191783Srmacklem return (error); 2155191783Srmacklem} 2156191783Srmacklem 2157191783Srmacklem/* 2158191783Srmacklem * Handle the setable attributes for V4. 2159191783Srmacklem * Returns NFSERR_BADXDR if it can't be parsed, 0 otherwise. 2160191783Srmacklem */ 2161191783Srmacklemint 2162191783Srmacklemnfsv4_sattr(struct nfsrv_descript *nd, struct nfsvattr *nvap, 2163191783Srmacklem nfsattrbit_t *attrbitp, NFSACL_T *aclp, struct thread *p) 2164191783Srmacklem{ 2165191783Srmacklem u_int32_t *tl; 2166191783Srmacklem int attrsum = 0; 2167191783Srmacklem int i, j; 2168191783Srmacklem int error, attrsize, bitpos, aclsize, aceerr, retnotsup = 0; 2169191783Srmacklem int toclient = 0; 2170191783Srmacklem u_char *cp, namestr[NFSV4_SMALLSTR + 1]; 2171191783Srmacklem uid_t uid; 2172191783Srmacklem gid_t gid; 2173191783Srmacklem struct timeval curtime; 2174191783Srmacklem 2175191783Srmacklem error = nfsrv_getattrbits(nd, attrbitp, NULL, &retnotsup); 2176191783Srmacklem if (error) 2177191783Srmacklem return (error); 2178191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2179191783Srmacklem attrsize = fxdr_unsigned(int, *tl); 2180191783Srmacklem 2181191783Srmacklem /* 2182191783Srmacklem * Loop around getting the setable attributes. If an unsupported 2183191783Srmacklem * one is found, set nd_repstat == NFSERR_ATTRNOTSUPP and return. 2184191783Srmacklem */ 2185191783Srmacklem if (retnotsup) { 2186191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2187191783Srmacklem bitpos = NFSATTRBIT_MAX; 2188191783Srmacklem } else { 2189191783Srmacklem bitpos = 0; 2190191783Srmacklem } 2191191783Srmacklem for (; bitpos < NFSATTRBIT_MAX; bitpos++) { 2192191783Srmacklem if (attrsum > attrsize) { 2193191783Srmacklem error = NFSERR_BADXDR; 2194191783Srmacklem goto nfsmout; 2195191783Srmacklem } 2196191783Srmacklem if (NFSISSET_ATTRBIT(attrbitp, bitpos)) 2197191783Srmacklem switch (bitpos) { 2198191783Srmacklem case NFSATTRBIT_SIZE: 2199191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2200191783Srmacklem nvap->na_size = fxdr_hyper(tl); 2201191783Srmacklem attrsum += NFSX_HYPER; 2202191783Srmacklem break; 2203191783Srmacklem case NFSATTRBIT_ACL: 2204191783Srmacklem error = nfsrv_dissectacl(nd, aclp, &aceerr, &aclsize, 2205191783Srmacklem p); 2206191783Srmacklem if (error) 2207191783Srmacklem goto nfsmout; 2208191783Srmacklem if (aceerr && !nd->nd_repstat) 2209191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2210191783Srmacklem attrsum += aclsize; 2211191783Srmacklem break; 2212191783Srmacklem case NFSATTRBIT_ARCHIVE: 2213191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2214191783Srmacklem if (!nd->nd_repstat) 2215191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2216191783Srmacklem attrsum += NFSX_UNSIGNED; 2217191783Srmacklem break; 2218191783Srmacklem case NFSATTRBIT_HIDDEN: 2219191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2220191783Srmacklem if (!nd->nd_repstat) 2221191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2222191783Srmacklem attrsum += NFSX_UNSIGNED; 2223191783Srmacklem break; 2224191783Srmacklem case NFSATTRBIT_MIMETYPE: 2225191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2226191783Srmacklem i = fxdr_unsigned(int, *tl); 2227191783Srmacklem error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 2228191783Srmacklem if (error) 2229191783Srmacklem goto nfsmout; 2230191783Srmacklem if (!nd->nd_repstat) 2231191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2232191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(i)); 2233191783Srmacklem break; 2234191783Srmacklem case NFSATTRBIT_MODE: 2235191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2236191783Srmacklem nvap->na_mode = nfstov_mode(*tl); 2237191783Srmacklem attrsum += NFSX_UNSIGNED; 2238191783Srmacklem break; 2239191783Srmacklem case NFSATTRBIT_OWNER: 2240191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2241191783Srmacklem j = fxdr_unsigned(int, *tl); 2242191783Srmacklem if (j < 0) 2243191783Srmacklem return (NFSERR_BADXDR); 2244191783Srmacklem if (j > NFSV4_SMALLSTR) 2245191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2246191783Srmacklem else 2247191783Srmacklem cp = namestr; 2248191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2249191783Srmacklem if (error) { 2250191783Srmacklem if (j > NFSV4_SMALLSTR) 2251191783Srmacklem free(cp, M_NFSSTRING); 2252191783Srmacklem return (error); 2253191783Srmacklem } 2254191783Srmacklem if (!nd->nd_repstat) { 2255191783Srmacklem nd->nd_repstat = nfsv4_strtouid(cp,j,&uid,p); 2256191783Srmacklem if (!nd->nd_repstat) 2257191783Srmacklem nvap->na_uid = uid; 2258191783Srmacklem } 2259191783Srmacklem if (j > NFSV4_SMALLSTR) 2260191783Srmacklem free(cp, M_NFSSTRING); 2261191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2262191783Srmacklem break; 2263191783Srmacklem case NFSATTRBIT_OWNERGROUP: 2264191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2265191783Srmacklem j = fxdr_unsigned(int, *tl); 2266191783Srmacklem if (j < 0) 2267191783Srmacklem return (NFSERR_BADXDR); 2268191783Srmacklem if (j > NFSV4_SMALLSTR) 2269191783Srmacklem cp = malloc(j + 1, M_NFSSTRING, M_WAITOK); 2270191783Srmacklem else 2271191783Srmacklem cp = namestr; 2272191783Srmacklem error = nfsrv_mtostr(nd, cp, j); 2273191783Srmacklem if (error) { 2274191783Srmacklem if (j > NFSV4_SMALLSTR) 2275191783Srmacklem free(cp, M_NFSSTRING); 2276191783Srmacklem return (error); 2277191783Srmacklem } 2278191783Srmacklem if (!nd->nd_repstat) { 2279191783Srmacklem nd->nd_repstat = nfsv4_strtogid(cp,j,&gid,p); 2280191783Srmacklem if (!nd->nd_repstat) 2281191783Srmacklem nvap->na_gid = gid; 2282191783Srmacklem } 2283191783Srmacklem if (j > NFSV4_SMALLSTR) 2284191783Srmacklem free(cp, M_NFSSTRING); 2285191783Srmacklem attrsum += (NFSX_UNSIGNED + NFSM_RNDUP(j)); 2286191783Srmacklem break; 2287191783Srmacklem case NFSATTRBIT_SYSTEM: 2288191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2289191783Srmacklem if (!nd->nd_repstat) 2290191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2291191783Srmacklem attrsum += NFSX_UNSIGNED; 2292191783Srmacklem break; 2293191783Srmacklem case NFSATTRBIT_TIMEACCESSSET: 2294191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2295191783Srmacklem attrsum += NFSX_UNSIGNED; 2296191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2297191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2298191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_atime); 2299191783Srmacklem toclient = 1; 2300191783Srmacklem attrsum += NFSX_V4TIME; 2301191783Srmacklem } else { 2302191783Srmacklem NFSGETTIME(&curtime); 2303191783Srmacklem nvap->na_atime.tv_sec = curtime.tv_sec; 2304191783Srmacklem nvap->na_atime.tv_nsec = curtime.tv_usec * 1000; 2305191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2306191783Srmacklem } 2307191783Srmacklem break; 2308191783Srmacklem case NFSATTRBIT_TIMEBACKUP: 2309191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2310191783Srmacklem if (!nd->nd_repstat) 2311191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2312191783Srmacklem attrsum += NFSX_V4TIME; 2313191783Srmacklem break; 2314191783Srmacklem case NFSATTRBIT_TIMECREATE: 2315191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2316191783Srmacklem if (!nd->nd_repstat) 2317191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2318191783Srmacklem attrsum += NFSX_V4TIME; 2319191783Srmacklem break; 2320191783Srmacklem case NFSATTRBIT_TIMEMODIFYSET: 2321191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2322191783Srmacklem attrsum += NFSX_UNSIGNED; 2323191783Srmacklem if (fxdr_unsigned(int, *tl)==NFSV4SATTRTIME_TOCLIENT) { 2324191783Srmacklem NFSM_DISSECT(tl, u_int32_t *, NFSX_V4TIME); 2325191783Srmacklem fxdr_nfsv4time(tl, &nvap->na_mtime); 2326191783Srmacklem nvap->na_vaflags &= ~VA_UTIMES_NULL; 2327191783Srmacklem attrsum += NFSX_V4TIME; 2328191783Srmacklem } else { 2329191783Srmacklem NFSGETTIME(&curtime); 2330191783Srmacklem nvap->na_mtime.tv_sec = curtime.tv_sec; 2331191783Srmacklem nvap->na_mtime.tv_nsec = curtime.tv_usec * 1000; 2332191783Srmacklem if (!toclient) 2333191783Srmacklem nvap->na_vaflags |= VA_UTIMES_NULL; 2334191783Srmacklem } 2335191783Srmacklem break; 2336191783Srmacklem default: 2337191783Srmacklem nd->nd_repstat = NFSERR_ATTRNOTSUPP; 2338191783Srmacklem /* 2339191783Srmacklem * set bitpos so we drop out of the loop. 2340191783Srmacklem */ 2341191783Srmacklem bitpos = NFSATTRBIT_MAX; 2342191783Srmacklem break; 2343191783Srmacklem }; 2344191783Srmacklem } 2345191783Srmacklem 2346191783Srmacklem /* 2347191783Srmacklem * some clients pad the attrlist, so we need to skip over the 2348191783Srmacklem * padding. 2349191783Srmacklem */ 2350191783Srmacklem if (attrsum > attrsize) { 2351191783Srmacklem error = NFSERR_BADXDR; 2352191783Srmacklem } else { 2353191783Srmacklem attrsize = NFSM_RNDUP(attrsize); 2354191783Srmacklem if (attrsum < attrsize) 2355191783Srmacklem error = nfsm_advance(nd, attrsize - attrsum, -1); 2356191783Srmacklem } 2357191783Srmacklemnfsmout: 2358191783Srmacklem return (error); 2359191783Srmacklem} 2360191783Srmacklem 2361191783Srmacklem/* 2362191783Srmacklem * Check/setup export credentials. 2363191783Srmacklem */ 2364191783Srmacklemint 2365191783Srmacklemnfsd_excred(struct nfsrv_descript *nd, struct nfsexstuff *exp, 2366191783Srmacklem struct ucred *credanon) 2367191783Srmacklem{ 2368191783Srmacklem int error = 0; 2369191783Srmacklem 2370191783Srmacklem /* 2371191783Srmacklem * Check/setup credentials. 2372191783Srmacklem */ 2373191783Srmacklem if (nd->nd_flag & ND_GSS) 2374192121Srmacklem exp->nes_exflag &= ~MNT_EXPORTANON; 2375191783Srmacklem 2376191783Srmacklem /* 2377192121Srmacklem * Check to see if the operation is allowed for this security flavor. 2378191783Srmacklem * RFC2623 suggests that the NFSv3 Fsinfo RPC be allowed to 2379191783Srmacklem * AUTH_NONE or AUTH_SYS for file systems requiring RPCSEC_GSS. 2380192121Srmacklem * Also, allow Secinfo, so that it can acquire the correct flavor(s). 2381191783Srmacklem */ 2382192121Srmacklem if (nfsvno_testexp(nd, exp) && 2383192121Srmacklem nd->nd_procnum != NFSV4OP_SECINFO && 2384191783Srmacklem nd->nd_procnum != NFSPROC_FSINFO) { 2385191783Srmacklem if (nd->nd_flag & ND_NFSV4) 2386191783Srmacklem error = NFSERR_WRONGSEC; 2387191783Srmacklem else 2388191783Srmacklem error = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2389191783Srmacklem return (error); 2390191783Srmacklem } 2391191783Srmacklem 2392191783Srmacklem /* 2393191783Srmacklem * Check to see if the file system is exported V4 only. 2394191783Srmacklem */ 2395191783Srmacklem if (NFSVNO_EXV4ONLY(exp) && !(nd->nd_flag & ND_NFSV4)) 2396191783Srmacklem return (NFSERR_PROGNOTV4); 2397191783Srmacklem 2398191783Srmacklem /* 2399191783Srmacklem * Now, map the user credentials. 2400191783Srmacklem * (Note that ND_AUTHNONE will only be set for an NFSv3 2401191783Srmacklem * Fsinfo RPC. If set for anything else, this code might need 2402191783Srmacklem * to change.) 2403191783Srmacklem */ 2404191783Srmacklem if (NFSVNO_EXPORTED(exp) && 2405191783Srmacklem ((!(nd->nd_flag & ND_GSS) && nd->nd_cred->cr_uid == 0) || 2406191783Srmacklem NFSVNO_EXPORTANON(exp) || 2407191783Srmacklem (nd->nd_flag & ND_AUTHNONE))) { 2408191783Srmacklem nd->nd_cred->cr_uid = credanon->cr_uid; 2409191783Srmacklem nd->nd_cred->cr_gid = credanon->cr_gid; 2410194498Sbrooks crsetgroups(nd->nd_cred, credanon->cr_ngroups, 2411194498Sbrooks credanon->cr_groups); 2412191783Srmacklem } 2413191783Srmacklem return (0); 2414191783Srmacklem} 2415191783Srmacklem 2416191783Srmacklem/* 2417191783Srmacklem * Check exports. 2418191783Srmacklem */ 2419191783Srmacklemint 2420191783Srmacklemnfsvno_checkexp(struct mount *mp, struct sockaddr *nam, struct nfsexstuff *exp, 2421191783Srmacklem struct ucred **credp) 2422191783Srmacklem{ 2423192121Srmacklem int i, error, *secflavors; 2424191783Srmacklem 2425191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2426192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2427192121Srmacklem if (error) { 2428192121Srmacklem if (nfs_rootfhset) { 2429192121Srmacklem exp->nes_exflag = 0; 2430192121Srmacklem exp->nes_numsecflavor = 0; 2431192121Srmacklem error = 0; 2432192121Srmacklem } 2433192121Srmacklem } else { 2434192121Srmacklem /* Copy the security flavors. */ 2435192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2436192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2437191783Srmacklem } 2438191783Srmacklem return (error); 2439191783Srmacklem} 2440191783Srmacklem 2441191783Srmacklem/* 2442191783Srmacklem * Get a vnode for a file handle and export stuff. 2443191783Srmacklem */ 2444191783Srmacklemint 2445191783Srmacklemnfsvno_fhtovp(struct mount *mp, fhandle_t *fhp, struct sockaddr *nam, 2446191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, struct ucred **credp) 2447191783Srmacklem{ 2448192121Srmacklem int i, error, *secflavors; 2449191783Srmacklem 2450191998Srmacklem *credp = NULL; 2451192121Srmacklem exp->nes_numsecflavor = 0; 2452191783Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, vpp); 2453191783Srmacklem if (nam && !error) { 2454191783Srmacklem error = VFS_CHECKEXP(mp, nam, &exp->nes_exflag, credp, 2455192121Srmacklem &exp->nes_numsecflavor, &secflavors); 2456191783Srmacklem if (error) { 2457191783Srmacklem if (nfs_rootfhset) { 2458191783Srmacklem exp->nes_exflag = 0; 2459192121Srmacklem exp->nes_numsecflavor = 0; 2460191783Srmacklem error = 0; 2461191783Srmacklem } else { 2462191783Srmacklem vput(*vpp); 2463191783Srmacklem } 2464192121Srmacklem } else { 2465192121Srmacklem /* Copy the security flavors. */ 2466192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) 2467192121Srmacklem exp->nes_secflavors[i] = secflavors[i]; 2468191783Srmacklem } 2469191783Srmacklem } 2470191783Srmacklem return (error); 2471191783Srmacklem} 2472191783Srmacklem 2473191783Srmacklem/* 2474191783Srmacklem * Do the pathconf vnode op. 2475191783Srmacklem */ 2476191783Srmacklemint 2477191783Srmacklemnfsvno_pathconf(struct vnode *vp, int flag, register_t *retf, 2478191783Srmacklem struct ucred *cred, struct thread *p) 2479191783Srmacklem{ 2480191783Srmacklem int error; 2481191783Srmacklem 2482191783Srmacklem error = VOP_PATHCONF(vp, flag, retf); 2483191783Srmacklem return (error); 2484191783Srmacklem} 2485191783Srmacklem 2486191783Srmacklem/* 2487191783Srmacklem * nfsd_fhtovp() - convert a fh to a vnode ptr 2488191783Srmacklem * - look up fsid in mount list (if not found ret error) 2489191783Srmacklem * - get vp and export rights by calling nfsvno_fhtovp() 2490191783Srmacklem * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 2491191783Srmacklem * for AUTH_SYS 2492191783Srmacklem * Also handle getting the Giant lock for the file system, 2493191783Srmacklem * as required: 2494191783Srmacklem * - if same mount point as *mpp 2495191783Srmacklem * do nothing 2496191783Srmacklem * else if *mpp == NULL 2497191783Srmacklem * if already locked 2498191783Srmacklem * leave it locked 2499191783Srmacklem * else 2500191783Srmacklem * call VFS_LOCK_GIANT() 2501191783Srmacklem * else 2502191783Srmacklem * if already locked 2503191783Srmacklem * unlock Giant 2504191783Srmacklem * call VFS_LOCK_GIANT() 2505191783Srmacklem */ 2506191783Srmacklemvoid 2507191783Srmacklemnfsd_fhtovp(struct nfsrv_descript *nd, struct nfsrvfh *nfp, 2508191783Srmacklem struct vnode **vpp, struct nfsexstuff *exp, 2509191783Srmacklem struct mount **mpp, int startwrite, struct thread *p) 2510191783Srmacklem{ 2511191783Srmacklem struct mount *mp; 2512191783Srmacklem struct ucred *credanon; 2513191783Srmacklem fhandle_t *fhp; 2514191783Srmacklem 2515191783Srmacklem fhp = (fhandle_t *)nfp->nfsrvfh_data; 2516191783Srmacklem /* 2517191783Srmacklem * Check for the special case of the nfsv4root_fh. 2518191783Srmacklem */ 2519191783Srmacklem mp = vfs_getvfs(&fhp->fh_fsid); 2520191783Srmacklem if (!mp) { 2521191783Srmacklem *vpp = NULL; 2522191783Srmacklem nd->nd_repstat = ESTALE; 2523191783Srmacklem if (*mpp && exp->nes_vfslocked) 2524191783Srmacklem VFS_UNLOCK_GIANT(*mpp); 2525191783Srmacklem *mpp = NULL; 2526191783Srmacklem exp->nes_vfslocked = 0; 2527191783Srmacklem return; 2528191783Srmacklem } 2529191783Srmacklem 2530191783Srmacklem /* 2531191783Srmacklem * Now, handle Giant for the file system. 2532191783Srmacklem */ 2533191783Srmacklem if (*mpp != NULL && *mpp != mp && exp->nes_vfslocked) { 2534191783Srmacklem VFS_UNLOCK_GIANT(*mpp); 2535191783Srmacklem exp->nes_vfslocked = 0; 2536191783Srmacklem } 2537191783Srmacklem if (!exp->nes_vfslocked && *mpp != mp) 2538191783Srmacklem exp->nes_vfslocked = VFS_LOCK_GIANT(mp); 2539191783Srmacklem 2540191783Srmacklem *mpp = mp; 2541191783Srmacklem if (startwrite) 2542191783Srmacklem vn_start_write(NULL, mpp, V_WAIT); 2543191783Srmacklem 2544191783Srmacklem nd->nd_repstat = nfsvno_fhtovp(mp, fhp, nd->nd_nam, vpp, exp, 2545191783Srmacklem &credanon); 2546191783Srmacklem 2547191783Srmacklem /* 2548191783Srmacklem * For NFSv4 without a pseudo root fs, unexported file handles 2549191783Srmacklem * can be returned, so that Lookup works everywhere. 2550191783Srmacklem */ 2551191783Srmacklem if (!nd->nd_repstat && exp->nes_exflag == 0 && 2552191783Srmacklem !(nd->nd_flag & ND_NFSV4)) { 2553191783Srmacklem vput(*vpp); 2554191783Srmacklem nd->nd_repstat = EACCES; 2555191783Srmacklem } 2556191783Srmacklem 2557191783Srmacklem /* 2558191783Srmacklem * Personally, I've never seen any point in requiring a 2559191783Srmacklem * reserved port#, since only in the rare case where the 2560191783Srmacklem * clients are all boxes with secure system priviledges, 2561191783Srmacklem * does it provide any enhanced security, but... some people 2562191783Srmacklem * believe it to be useful and keep putting this code back in. 2563191783Srmacklem * (There is also some "security checker" out there that 2564191783Srmacklem * complains if the nfs server doesn't enforce this.) 2565191783Srmacklem * However, note the following: 2566191783Srmacklem * RFC3530 (NFSv4) specifies that a reserved port# not be 2567191783Srmacklem * required. 2568191783Srmacklem * RFC2623 recommends that, if a reserved port# is checked for, 2569191783Srmacklem * that there be a way to turn that off--> ifdef'd. 2570191783Srmacklem */ 2571191783Srmacklem#ifdef NFS_REQRSVPORT 2572191783Srmacklem if (!nd->nd_repstat) { 2573192121Srmacklem struct sockaddr_in *saddr; 2574192121Srmacklem struct sockaddr_in6 *saddr6; 2575192121Srmacklem 2576192121Srmacklem saddr = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 2577192121Srmacklem saddr6 = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in6 *); 2578192121Srmacklem if (!(nd->nd_flag & ND_NFSV4) && 2579192121Srmacklem ((saddr->sin_family == AF_INET && 2580192121Srmacklem ntohs(saddr->sin_port) >= IPPORT_RESERVED) || 2581192121Srmacklem (saddr6->sin6_family == AF_INET6 && 2582192121Srmacklem ntohs(saddr6->sin6_port) >= IPPORT_RESERVED))) { 2583192121Srmacklem vput(*vpp); 2584192121Srmacklem nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK); 2585192121Srmacklem } 2586191783Srmacklem } 2587191783Srmacklem#endif /* NFS_REQRSVPORT */ 2588191783Srmacklem 2589191783Srmacklem /* 2590191783Srmacklem * Check/setup credentials. 2591191783Srmacklem */ 2592191783Srmacklem if (!nd->nd_repstat) { 2593191783Srmacklem nd->nd_saveduid = nd->nd_cred->cr_uid; 2594191783Srmacklem nd->nd_repstat = nfsd_excred(nd, exp, credanon); 2595191783Srmacklem if (nd->nd_repstat) 2596191783Srmacklem vput(*vpp); 2597191783Srmacklem } 2598191940Skan if (credanon != NULL) 2599191940Skan crfree(credanon); 2600191783Srmacklem if (nd->nd_repstat) { 2601191783Srmacklem if (startwrite) 2602191783Srmacklem vn_finished_write(mp); 2603191783Srmacklem if (exp->nes_vfslocked) { 2604191783Srmacklem VFS_UNLOCK_GIANT(mp); 2605191783Srmacklem exp->nes_vfslocked = 0; 2606191783Srmacklem } 2607191783Srmacklem vfs_rel(mp); 2608191783Srmacklem *vpp = NULL; 2609191783Srmacklem *mpp = NULL; 2610191783Srmacklem } else { 2611191783Srmacklem vfs_rel(mp); 2612191783Srmacklem } 2613191783Srmacklem} 2614191783Srmacklem 2615191783Srmacklem/* 2616191783Srmacklem * glue for fp. 2617191783Srmacklem */ 2618191783Srmacklemint 2619191783Srmacklemfp_getfvp(struct thread *p, int fd, struct file **fpp, struct vnode **vpp) 2620191783Srmacklem{ 2621191783Srmacklem struct filedesc *fdp; 2622191783Srmacklem struct file *fp; 2623191783Srmacklem 2624191783Srmacklem fdp = p->td_proc->p_fd; 2625191783Srmacklem if (fd >= fdp->fd_nfiles || 2626191783Srmacklem (fp = fdp->fd_ofiles[fd]) == NULL) 2627191783Srmacklem return (EBADF); 2628191783Srmacklem *fpp = fp; 2629191783Srmacklem return (0); 2630191783Srmacklem} 2631191783Srmacklem 2632191783Srmacklem/* 2633192121Srmacklem * Called from nfssvc() to update the exports list. Just call 2634191783Srmacklem * vfs_export(). This has to be done, since the v4 root fake fs isn't 2635191783Srmacklem * in the mount list. 2636191783Srmacklem */ 2637191783Srmacklemint 2638191783Srmacklemnfsrv_v4rootexport(void *argp, struct ucred *cred, struct thread *p) 2639191783Srmacklem{ 2640191783Srmacklem struct nfsex_args *nfsexargp = (struct nfsex_args *)argp; 2641191783Srmacklem int error; 2642191783Srmacklem struct nameidata nd; 2643191783Srmacklem fhandle_t fh; 2644191783Srmacklem 2645191783Srmacklem error = vfs_export(&nfsv4root_mnt, &nfsexargp->export); 2646191783Srmacklem if ((nfsexargp->export.ex_flags & MNT_DELEXPORT)) { 2647191783Srmacklem nfs_rootfhset = 0; 2648191783Srmacklem nfsv4root_set = 0; 2649191783Srmacklem } else if (error == 0) { 2650191783Srmacklem if (nfsexargp->fspec == NULL) 2651191783Srmacklem return (EPERM); 2652191783Srmacklem /* 2653191783Srmacklem * If fspec != NULL, this is the v4root path. 2654191783Srmacklem */ 2655191783Srmacklem NDINIT(&nd, LOOKUP, FOLLOW | MPSAFE, UIO_USERSPACE, 2656191783Srmacklem nfsexargp->fspec, p); 2657191783Srmacklem if ((error = namei(&nd)) != 0) 2658191783Srmacklem return (error); 2659191783Srmacklem error = nfsvno_getfh(nd.ni_vp, &fh, p); 2660191783Srmacklem vrele(nd.ni_vp); 2661191783Srmacklem if (!error) { 2662191783Srmacklem nfs_rootfh.nfsrvfh_len = NFSX_MYFH; 2663191783Srmacklem NFSBCOPY((caddr_t)&fh, 2664191783Srmacklem nfs_rootfh.nfsrvfh_data, 2665191783Srmacklem sizeof (fhandle_t)); 2666191783Srmacklem nfs_rootfhset = 1; 2667191783Srmacklem } 2668191783Srmacklem } 2669191783Srmacklem return (error); 2670191783Srmacklem} 2671191783Srmacklem 2672191783Srmacklem/* 2673191783Srmacklem * Get the tcp socket sequence numbers we need. 2674191783Srmacklem * (Maybe this should be moved to the tcp sources?) 2675191783Srmacklem */ 2676191783Srmacklemint 2677191783Srmacklemnfsrv_getsocksndseq(struct socket *so, tcp_seq *maxp, tcp_seq *unap) 2678191783Srmacklem{ 2679191783Srmacklem struct inpcb *inp; 2680191783Srmacklem struct tcpcb *tp; 2681191783Srmacklem int error = EPIPE; 2682191783Srmacklem 2683191783Srmacklem INP_INFO_RLOCK(&V_tcbinfo); 2684191783Srmacklem inp = sotoinpcb(so); 2685191783Srmacklem if (inp == NULL) { 2686191783Srmacklem INP_INFO_RUNLOCK(&V_tcbinfo); 2687191783Srmacklem return (error); 2688191783Srmacklem } 2689191783Srmacklem INP_RLOCK(inp); 2690191783Srmacklem INP_INFO_RUNLOCK(&V_tcbinfo); 2691191783Srmacklem tp = intotcpcb(inp); 2692191783Srmacklem if (tp != NULL && tp->t_state == TCPS_ESTABLISHED) { 2693191783Srmacklem *maxp = tp->snd_max; 2694191783Srmacklem *unap = tp->snd_una; 2695191783Srmacklem error = 0; 2696191783Srmacklem } 2697191783Srmacklem INP_RUNLOCK(inp); 2698191783Srmacklem return (error); 2699191783Srmacklem} 2700191783Srmacklem 2701191783Srmacklem/* 2702191783Srmacklem * This function needs to test to see if the system is near its limit 2703191783Srmacklem * for memory allocation via malloc() or mget() and return True iff 2704191783Srmacklem * either of these resources are near their limit. 2705191783Srmacklem * XXX (For now, this is just a stub.) 2706191783Srmacklem */ 2707191783Srmacklemint nfsrv_testmalloclimit = 0; 2708191783Srmacklemint 2709191783Srmacklemnfsrv_mallocmget_limit(void) 2710191783Srmacklem{ 2711191783Srmacklem static int printmesg = 0; 2712191783Srmacklem static int testval = 1; 2713191783Srmacklem 2714191783Srmacklem if (nfsrv_testmalloclimit && (testval++ % 1000) == 0) { 2715191783Srmacklem if ((printmesg++ % 100) == 0) 2716191783Srmacklem printf("nfsd: malloc/mget near limit\n"); 2717191783Srmacklem return (1); 2718191783Srmacklem } 2719191783Srmacklem return (0); 2720191783Srmacklem} 2721191783Srmacklem 2722191783Srmacklem/* 2723191783Srmacklem * BSD specific initialization of a mount point. 2724191783Srmacklem */ 2725191783Srmacklemvoid 2726191783Srmacklemnfsd_mntinit(void) 2727191783Srmacklem{ 2728191783Srmacklem static int inited = 0; 2729191783Srmacklem 2730191783Srmacklem if (inited) 2731191783Srmacklem return; 2732191783Srmacklem inited = 1; 2733191783Srmacklem nfsv4root_mnt.mnt_flag = (MNT_RDONLY | MNT_EXPORTED); 2734191783Srmacklem TAILQ_INIT(&nfsv4root_mnt.mnt_nvnodelist); 2735191783Srmacklem nfsv4root_mnt.mnt_export = NULL; 2736191783Srmacklem TAILQ_INIT(&nfsv4root_opt); 2737191783Srmacklem TAILQ_INIT(&nfsv4root_newopt); 2738191783Srmacklem nfsv4root_mnt.mnt_opt = &nfsv4root_opt; 2739191783Srmacklem nfsv4root_mnt.mnt_optnew = &nfsv4root_newopt; 2740191783Srmacklem nfsv4root_mnt.mnt_nvnodelistsize = 0; 2741191783Srmacklem} 2742191783Srmacklem 2743191783Srmacklem/* 2744191783Srmacklem * Get a vnode for a file handle, without checking exports, etc. 2745191783Srmacklem */ 2746191783Srmacklemstruct vnode * 2747191783Srmacklemnfsvno_getvp(fhandle_t *fhp) 2748191783Srmacklem{ 2749191783Srmacklem struct mount *mp; 2750191783Srmacklem struct vnode *vp; 2751191783Srmacklem int error; 2752191783Srmacklem 2753191783Srmacklem mp = vfs_getvfs(&fhp->fh_fsid); 2754191783Srmacklem if (mp == NULL) 2755191783Srmacklem return (NULL); 2756191783Srmacklem error = VFS_FHTOVP(mp, &fhp->fh_fid, &vp); 2757191783Srmacklem if (error) 2758191783Srmacklem return (NULL); 2759191783Srmacklem return (vp); 2760191783Srmacklem} 2761191783Srmacklem 2762191783Srmacklem/* 2763191783Srmacklem * Check to see it a byte range lock held by a process running 2764191783Srmacklem * locally on the server conflicts with the new lock. 2765191783Srmacklem */ 2766191783Srmacklemint 2767191783Srmacklemnfsvno_localconflict(struct vnode *vp, int ftype, u_int64_t first, 2768192256Srmacklem u_int64_t end, struct nfslockconflict *cfp, struct thread *td) 2769191783Srmacklem{ 2770191783Srmacklem int error; 2771191783Srmacklem struct flock fl; 2772191783Srmacklem 2773191783Srmacklem if (!nfsrv_dolocallocks) 2774191783Srmacklem return (0); 2775191783Srmacklem fl.l_whence = SEEK_SET; 2776191783Srmacklem fl.l_type = ftype; 2777191783Srmacklem fl.l_start = (off_t)first; 2778191783Srmacklem if (end == NFS64BITSSET) 2779191783Srmacklem fl.l_len = 0; 2780191783Srmacklem else 2781191783Srmacklem fl.l_len = (off_t)(end - first); 2782191783Srmacklem /* 2783192256Srmacklem * For FreeBSD8, the l_pid and l_sysid must be set to the same 2784192256Srmacklem * values for all calls, so that all locks will be held by the 2785192256Srmacklem * nfsd server. (The nfsd server handles conflicts between the 2786192256Srmacklem * various clients.) 2787192256Srmacklem * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 2788192256Srmacklem * bytes, so it can't be put in l_sysid. 2789191783Srmacklem */ 2790192503Srmacklem if (nfsv4_sysid == 0) 2791192503Srmacklem nfsv4_sysid = nlm_acquire_next_sysid(); 2792192256Srmacklem fl.l_pid = (pid_t)0; 2793192503Srmacklem fl.l_sysid = (int)nfsv4_sysid; 2794192256Srmacklem 2795192256Srmacklem NFSVOPUNLOCK(vp, 0, td); 2796192256Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_GETLK, &fl, 2797192256Srmacklem (F_POSIX | F_REMOTE)); 2798192256Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, td); 2799191783Srmacklem if (error) 2800191783Srmacklem return (error); 2801191783Srmacklem if (fl.l_type == F_UNLCK) 2802191783Srmacklem return (0); 2803191783Srmacklem if (cfp != NULL) { 2804191783Srmacklem cfp->cl_clientid.lval[0] = cfp->cl_clientid.lval[1] = 0; 2805191783Srmacklem cfp->cl_first = (u_int64_t)fl.l_start; 2806191783Srmacklem if (fl.l_len == 0) 2807191783Srmacklem cfp->cl_end = NFS64BITSSET; 2808191783Srmacklem else 2809191783Srmacklem cfp->cl_end = (u_int64_t) 2810191783Srmacklem (fl.l_start + fl.l_len); 2811191783Srmacklem if (fl.l_type == F_WRLCK) 2812191783Srmacklem cfp->cl_flags = NFSLCK_WRITE; 2813191783Srmacklem else 2814191783Srmacklem cfp->cl_flags = NFSLCK_READ; 2815191783Srmacklem sprintf(cfp->cl_owner, "LOCALID%d", fl.l_pid); 2816191783Srmacklem cfp->cl_ownerlen = strlen(cfp->cl_owner); 2817191783Srmacklem return (NFSERR_DENIED); 2818191783Srmacklem } 2819191783Srmacklem return (NFSERR_INVAL); 2820191783Srmacklem} 2821191783Srmacklem 2822191783Srmacklem/* 2823191783Srmacklem * Do a local VOP_ADVLOCK(). 2824191783Srmacklem */ 2825191783Srmacklemint 2826191783Srmacklemnfsvno_advlock(struct vnode *vp, int ftype, u_int64_t first, 2827192256Srmacklem u_int64_t end, struct thread *td) 2828191783Srmacklem{ 2829191783Srmacklem int error; 2830191783Srmacklem struct flock fl; 2831191783Srmacklem u_int64_t tlen; 2832191783Srmacklem 2833191783Srmacklem if (!nfsrv_dolocallocks) 2834191783Srmacklem return (0); 2835191783Srmacklem fl.l_whence = SEEK_SET; 2836191783Srmacklem fl.l_type = ftype; 2837191783Srmacklem fl.l_start = (off_t)first; 2838191783Srmacklem if (end == NFS64BITSSET) { 2839191783Srmacklem fl.l_len = 0; 2840191783Srmacklem } else { 2841191783Srmacklem tlen = end - first; 2842191783Srmacklem fl.l_len = (off_t)tlen; 2843191783Srmacklem } 2844191783Srmacklem /* 2845192256Srmacklem * For FreeBSD8, the l_pid and l_sysid must be set to the same 2846192256Srmacklem * values for all calls, so that all locks will be held by the 2847192256Srmacklem * nfsd server. (The nfsd server handles conflicts between the 2848192256Srmacklem * various clients.) 2849192256Srmacklem * Since an NFSv4 lockowner is a ClientID plus an array of up to 1024 2850192256Srmacklem * bytes, so it can't be put in l_sysid. 2851191783Srmacklem */ 2852192503Srmacklem if (nfsv4_sysid == 0) 2853192503Srmacklem nfsv4_sysid = nlm_acquire_next_sysid(); 2854192256Srmacklem fl.l_pid = (pid_t)0; 2855192503Srmacklem fl.l_sysid = (int)nfsv4_sysid; 2856192256Srmacklem 2857192256Srmacklem NFSVOPUNLOCK(vp, 0, td); 2858192256Srmacklem error = VOP_ADVLOCK(vp, (caddr_t)td->td_proc, F_SETLK, &fl, 2859192256Srmacklem (F_POSIX | F_REMOTE)); 2860192256Srmacklem NFSVOPLOCK(vp, LK_EXCLUSIVE | LK_RETRY, td); 2861191783Srmacklem return (error); 2862191783Srmacklem} 2863191783Srmacklem 2864191783Srmacklem/* 2865191783Srmacklem * Unlock an underlying local file system. 2866191783Srmacklem */ 2867191783Srmacklemvoid 2868191783Srmacklemnfsvno_unlockvfs(struct mount *mp) 2869191783Srmacklem{ 2870191783Srmacklem 2871191783Srmacklem VFS_UNLOCK_GIANT(mp); 2872191783Srmacklem} 2873191783Srmacklem 2874191783Srmacklem/* 2875191783Srmacklem * Lock an underlying file system, as required, and return 2876191783Srmacklem * whether or not it is locked. 2877191783Srmacklem */ 2878191783Srmacklemint 2879191783Srmacklemnfsvno_lockvfs(struct mount *mp) 2880191783Srmacklem{ 2881191783Srmacklem int ret; 2882191783Srmacklem 2883191783Srmacklem ret = VFS_LOCK_GIANT(mp); 2884191783Srmacklem return (ret); 2885191783Srmacklem} 2886191783Srmacklem 2887191783Srmacklem/* 2888191783Srmacklem * Check the nfsv4 root exports. 2889191783Srmacklem */ 2890191783Srmacklemint 2891191783Srmacklemnfsvno_v4rootexport(struct nfsrv_descript *nd) 2892191783Srmacklem{ 2893191783Srmacklem struct ucred *credanon; 2894192121Srmacklem int exflags, error, numsecflavor, *secflavors, i; 2895191783Srmacklem 2896191783Srmacklem error = vfs_stdcheckexp(&nfsv4root_mnt, nd->nd_nam, &exflags, 2897192121Srmacklem &credanon, &numsecflavor, &secflavors); 2898191783Srmacklem if (error) 2899191783Srmacklem return (NFSERR_PROGUNAVAIL); 2900191940Skan if (credanon != NULL) 2901191940Skan crfree(credanon); 2902192121Srmacklem for (i = 0; i < numsecflavor; i++) { 2903192121Srmacklem if (secflavors[i] == AUTH_SYS) 2904192121Srmacklem nd->nd_flag |= ND_EXAUTHSYS; 2905192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5) 2906192121Srmacklem nd->nd_flag |= ND_EXGSS; 2907192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5I) 2908192121Srmacklem nd->nd_flag |= ND_EXGSSINTEGRITY; 2909192121Srmacklem else if (secflavors[i] == RPCSEC_GSS_KRB5P) 2910192121Srmacklem nd->nd_flag |= ND_EXGSSPRIVACY; 2911192121Srmacklem } 2912191783Srmacklem return (0); 2913191783Srmacklem} 2914191783Srmacklem 2915191783Srmacklem/* 2916191783Srmacklem * Nfs server psuedo system call for the nfsd's 2917191783Srmacklem */ 2918191783Srmacklem/* 2919191783Srmacklem * MPSAFE 2920191783Srmacklem */ 2921191783Srmacklemstatic int 2922191783Srmacklemnfssvc_nfsd(struct thread *td, struct nfssvc_args *uap) 2923191783Srmacklem{ 2924191783Srmacklem struct file *fp; 2925192017Srmacklem struct nfsd_addsock_args sockarg; 2926192017Srmacklem struct nfsd_nfsd_args nfsdarg; 2927191783Srmacklem int error; 2928191783Srmacklem 2929191783Srmacklem if (uap->flag & NFSSVC_NFSDADDSOCK) { 2930192017Srmacklem error = copyin(uap->argp, (caddr_t)&sockarg, sizeof (sockarg)); 2931191783Srmacklem if (error) 2932191783Srmacklem return (error); 2933192017Srmacklem if ((error = fget(td, sockarg.sock, &fp)) != 0) { 2934191783Srmacklem return (error); 2935191783Srmacklem } 2936191783Srmacklem if (fp->f_type != DTYPE_SOCKET) { 2937191783Srmacklem fdrop(fp, td); 2938191783Srmacklem return (EPERM); 2939191783Srmacklem } 2940191783Srmacklem error = nfsrvd_addsock(fp); 2941191783Srmacklem fdrop(fp, td); 2942191783Srmacklem } else if (uap->flag & NFSSVC_NFSDNFSD) { 2943192017Srmacklem if (uap->argp == NULL) 2944192017Srmacklem return (EINVAL); 2945192017Srmacklem error = copyin(uap->argp, (caddr_t)&nfsdarg, 2946192017Srmacklem sizeof (nfsdarg)); 2947192017Srmacklem if (error) 2948192017Srmacklem return (error); 2949192017Srmacklem error = nfsrvd_nfsd(td, &nfsdarg); 2950191783Srmacklem } else { 2951191783Srmacklem error = nfssvc_srvcall(td, uap, td->td_ucred); 2952191783Srmacklem } 2953191783Srmacklem return (error); 2954191783Srmacklem} 2955191783Srmacklem 2956191783Srmacklemstatic int 2957191783Srmacklemnfssvc_srvcall(struct thread *p, struct nfssvc_args *uap, struct ucred *cred) 2958191783Srmacklem{ 2959191783Srmacklem struct nfsex_args export; 2960191783Srmacklem struct file *fp = NULL; 2961191783Srmacklem int stablefd, len; 2962191783Srmacklem struct nfsd_clid adminrevoke; 2963191783Srmacklem struct nfsd_dumplist dumplist; 2964191783Srmacklem struct nfsd_dumpclients *dumpclients; 2965191783Srmacklem struct nfsd_dumplocklist dumplocklist; 2966191783Srmacklem struct nfsd_dumplocks *dumplocks; 2967191783Srmacklem struct nameidata nd; 2968191783Srmacklem vnode_t vp; 2969191783Srmacklem int error = EINVAL; 2970191783Srmacklem 2971191783Srmacklem if (uap->flag & NFSSVC_PUBLICFH) { 2972191783Srmacklem NFSBZERO((caddr_t)&nfs_pubfh.nfsrvfh_data, 2973191783Srmacklem sizeof (fhandle_t)); 2974191783Srmacklem error = copyin(uap->argp, 2975191783Srmacklem &nfs_pubfh.nfsrvfh_data, sizeof (fhandle_t)); 2976191783Srmacklem if (!error) 2977191783Srmacklem nfs_pubfhset = 1; 2978191783Srmacklem } else if (uap->flag & NFSSVC_V4ROOTEXPORT) { 2979191783Srmacklem error = copyin(uap->argp,(caddr_t)&export, 2980191783Srmacklem sizeof (struct nfsex_args)); 2981191783Srmacklem if (!error) 2982191783Srmacklem error = nfsrv_v4rootexport(&export, cred, p); 2983191783Srmacklem } else if (uap->flag & NFSSVC_NOPUBLICFH) { 2984191783Srmacklem nfs_pubfhset = 0; 2985191783Srmacklem error = 0; 2986191783Srmacklem } else if (uap->flag & NFSSVC_STABLERESTART) { 2987191783Srmacklem error = copyin(uap->argp, (caddr_t)&stablefd, 2988191783Srmacklem sizeof (int)); 2989191783Srmacklem if (!error) 2990191783Srmacklem error = fp_getfvp(p, stablefd, &fp, &vp); 2991191783Srmacklem if (!error && (NFSFPFLAG(fp) & (FREAD | FWRITE)) != (FREAD | FWRITE)) 2992191783Srmacklem error = EBADF; 2993191783Srmacklem if (!error && newnfs_numnfsd != 0) 2994191783Srmacklem error = EPERM; 2995191783Srmacklem if (!error) { 2996191783Srmacklem nfsrv_stablefirst.nsf_fp = fp; 2997191783Srmacklem nfsrv_setupstable(p); 2998191783Srmacklem } 2999191783Srmacklem } else if (uap->flag & NFSSVC_ADMINREVOKE) { 3000191783Srmacklem error = copyin(uap->argp, (caddr_t)&adminrevoke, 3001191783Srmacklem sizeof (struct nfsd_clid)); 3002191783Srmacklem if (!error) 3003191783Srmacklem error = nfsrv_adminrevoke(&adminrevoke, p); 3004191783Srmacklem } else if (uap->flag & NFSSVC_DUMPCLIENTS) { 3005191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplist, 3006191783Srmacklem sizeof (struct nfsd_dumplist)); 3007191783Srmacklem if (!error && (dumplist.ndl_size < 1 || 3008191783Srmacklem dumplist.ndl_size > NFSRV_MAXDUMPLIST)) 3009191783Srmacklem error = EPERM; 3010191783Srmacklem if (!error) { 3011191783Srmacklem len = sizeof (struct nfsd_dumpclients) * dumplist.ndl_size; 3012191783Srmacklem dumpclients = (struct nfsd_dumpclients *)malloc(len, 3013191783Srmacklem M_TEMP, M_WAITOK); 3014191783Srmacklem nfsrv_dumpclients(dumpclients, dumplist.ndl_size); 3015191783Srmacklem error = copyout(dumpclients, 3016191783Srmacklem CAST_USER_ADDR_T(dumplist.ndl_list), len); 3017191783Srmacklem free((caddr_t)dumpclients, M_TEMP); 3018191783Srmacklem } 3019191783Srmacklem } else if (uap->flag & NFSSVC_DUMPLOCKS) { 3020191783Srmacklem error = copyin(uap->argp, (caddr_t)&dumplocklist, 3021191783Srmacklem sizeof (struct nfsd_dumplocklist)); 3022191783Srmacklem if (!error && (dumplocklist.ndllck_size < 1 || 3023191783Srmacklem dumplocklist.ndllck_size > NFSRV_MAXDUMPLIST)) 3024191783Srmacklem error = EPERM; 3025191783Srmacklem if (!error) 3026191783Srmacklem error = nfsrv_lookupfilename(&nd, 3027191783Srmacklem dumplocklist.ndllck_fname, p); 3028191783Srmacklem if (!error) { 3029191783Srmacklem len = sizeof (struct nfsd_dumplocks) * 3030191783Srmacklem dumplocklist.ndllck_size; 3031191783Srmacklem dumplocks = (struct nfsd_dumplocks *)malloc(len, 3032191783Srmacklem M_TEMP, M_WAITOK); 3033191783Srmacklem nfsrv_dumplocks(nd.ni_vp, dumplocks, 3034191783Srmacklem dumplocklist.ndllck_size, p); 3035191783Srmacklem vput(nd.ni_vp); 3036191783Srmacklem error = copyout(dumplocks, 3037191783Srmacklem CAST_USER_ADDR_T(dumplocklist.ndllck_list), len); 3038191783Srmacklem free((caddr_t)dumplocks, M_TEMP); 3039191783Srmacklem } 3040191783Srmacklem } 3041191783Srmacklem return (error); 3042191783Srmacklem} 3043191783Srmacklem 3044192121Srmacklem/* 3045192121Srmacklem * Check exports. 3046192121Srmacklem * Returns 0 if ok, 1 otherwise. 3047192121Srmacklem */ 3048192121Srmacklemint 3049192121Srmacklemnfsvno_testexp(struct nfsrv_descript *nd, struct nfsexstuff *exp) 3050192121Srmacklem{ 3051192121Srmacklem int i; 3052192121Srmacklem 3053192121Srmacklem /* 3054192121Srmacklem * This seems odd, but allow the case where the security flavor 3055192121Srmacklem * list is empty. This happens when NFSv4 is traversing non-exported 3056192121Srmacklem * file systems. Exported file systems should always have a non-empty 3057192121Srmacklem * security flavor list. 3058192121Srmacklem */ 3059192121Srmacklem if (exp->nes_numsecflavor == 0) 3060192121Srmacklem return (0); 3061192121Srmacklem 3062192121Srmacklem for (i = 0; i < exp->nes_numsecflavor; i++) { 3063192121Srmacklem /* 3064192121Srmacklem * The tests for privacy and integrity must be first, 3065192121Srmacklem * since ND_GSS is set for everything but AUTH_SYS. 3066192121Srmacklem */ 3067192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5P && 3068192121Srmacklem (nd->nd_flag & ND_GSSPRIVACY)) 3069192121Srmacklem return (0); 3070192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5I && 3071192121Srmacklem (nd->nd_flag & ND_GSSINTEGRITY)) 3072192121Srmacklem return (0); 3073192121Srmacklem if (exp->nes_secflavors[i] == RPCSEC_GSS_KRB5 && 3074192121Srmacklem (nd->nd_flag & ND_GSS)) 3075192121Srmacklem return (0); 3076192121Srmacklem if (exp->nes_secflavors[i] == AUTH_SYS && 3077192121Srmacklem (nd->nd_flag & ND_GSS) == 0) 3078192121Srmacklem return (0); 3079192121Srmacklem } 3080192121Srmacklem return (1); 3081192121Srmacklem} 3082192121Srmacklem 3083191783Srmacklemextern int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *); 3084191783Srmacklem 3085191783Srmacklem/* 3086191783Srmacklem * Called once to initialize data structures... 3087191783Srmacklem */ 3088191783Srmacklemstatic int 3089191783Srmacklemnfsd_modevent(module_t mod, int type, void *data) 3090191783Srmacklem{ 3091191783Srmacklem int error = 0; 3092191783Srmacklem static int loaded = 0; 3093191783Srmacklem 3094191783Srmacklem switch (type) { 3095191783Srmacklem case MOD_LOAD: 3096191783Srmacklem if (loaded) 3097191783Srmacklem return (0); 3098191783Srmacklem newnfs_portinit(); 3099191783Srmacklem mtx_init(&nfs_cache_mutex, "nfs_cache_mutex", NULL, MTX_DEF); 3100191783Srmacklem mtx_init(&nfs_v4root_mutex, "nfs_v4root_mutex", NULL, MTX_DEF); 3101191783Srmacklem mtx_init(&nfsv4root_mnt.mnt_mtx, "struct mount mtx", NULL, 3102191783Srmacklem MTX_DEF); 3103191783Srmacklem lockinit(&nfsv4root_mnt.mnt_explock, PVFS, "explock", 0, 0); 3104191783Srmacklem nfsrvd_initcache(); 3105191783Srmacklem nfsd_init(); 3106191783Srmacklem NFSD_LOCK(); 3107191783Srmacklem nfsrvd_init(0); 3108191783Srmacklem NFSD_UNLOCK(); 3109191783Srmacklem nfsd_mntinit(); 3110191783Srmacklem#ifdef VV_DISABLEDELEG 3111191783Srmacklem vn_deleg_ops.vndeleg_recall = nfsd_recalldelegation; 3112191783Srmacklem vn_deleg_ops.vndeleg_disable = nfsd_disabledelegation; 3113191783Srmacklem#endif 3114191783Srmacklem nfsd_call_servertimer = nfsrv_servertimer; 3115191783Srmacklem nfsd_call_nfsd = nfssvc_nfsd; 3116191783Srmacklem loaded = 1; 3117191783Srmacklem break; 3118191783Srmacklem 3119191783Srmacklem case MOD_UNLOAD: 3120191783Srmacklem if (newnfs_numnfsd != 0) { 3121191783Srmacklem error = EBUSY; 3122191783Srmacklem break; 3123191783Srmacklem } 3124191783Srmacklem 3125191783Srmacklem#ifdef VV_DISABLEDELEG 3126191783Srmacklem vn_deleg_ops.vndeleg_recall = NULL; 3127191783Srmacklem vn_deleg_ops.vndeleg_disable = NULL; 3128191783Srmacklem#endif 3129191783Srmacklem nfsd_call_servertimer = NULL; 3130191783Srmacklem nfsd_call_nfsd = NULL; 3131191783Srmacklem /* and get rid of the locks */ 3132191783Srmacklem mtx_destroy(&nfs_cache_mutex); 3133191783Srmacklem mtx_destroy(&nfs_v4root_mutex); 3134191783Srmacklem mtx_destroy(&nfsv4root_mnt.mnt_mtx); 3135191783Srmacklem lockdestroy(&nfsv4root_mnt.mnt_explock); 3136191783Srmacklem loaded = 0; 3137191783Srmacklem break; 3138191783Srmacklem default: 3139191783Srmacklem error = EOPNOTSUPP; 3140191783Srmacklem break; 3141191783Srmacklem } 3142191783Srmacklem return error; 3143191783Srmacklem} 3144191783Srmacklemstatic moduledata_t nfsd_mod = { 3145191783Srmacklem "nfsd", 3146191783Srmacklem nfsd_modevent, 3147191783Srmacklem NULL, 3148191783Srmacklem}; 3149191783SrmacklemDECLARE_MODULE(nfsd, nfsd_mod, SI_SUB_VFS, SI_ORDER_ANY); 3150191783Srmacklem 3151191783Srmacklem/* So that loader and kldload(2) can find us, wherever we are.. */ 3152191783SrmacklemMODULE_VERSION(nfsd, 1); 3153191783SrmacklemMODULE_DEPEND(nfsd, nfscommon, 1, 1, 1); 3154192574SrmacklemMODULE_DEPEND(nfsd, nfslockd, 1, 1, 1); 3155191783Srmacklem 3156