tmpfs_vnops.c revision 269167
1171802Sdelphij/* $NetBSD: tmpfs_vnops.c,v 1.39 2007/07/23 15:41:01 jmmv Exp $ */ 2170808Sdelphij 3182739Sdelphij/*- 4171802Sdelphij * Copyright (c) 2005, 2006 The NetBSD Foundation, Inc. 5170808Sdelphij * All rights reserved. 6170808Sdelphij * 7170808Sdelphij * This code is derived from software contributed to The NetBSD Foundation 8170808Sdelphij * by Julio M. Merino Vidal, developed as part of Google's Summer of Code 9170808Sdelphij * 2005 program. 10170808Sdelphij * 11170808Sdelphij * Redistribution and use in source and binary forms, with or without 12170808Sdelphij * modification, are permitted provided that the following conditions 13170808Sdelphij * are met: 14170808Sdelphij * 1. Redistributions of source code must retain the above copyright 15170808Sdelphij * notice, this list of conditions and the following disclaimer. 16170808Sdelphij * 2. Redistributions in binary form must reproduce the above copyright 17170808Sdelphij * notice, this list of conditions and the following disclaimer in the 18170808Sdelphij * documentation and/or other materials provided with the distribution. 19170808Sdelphij * 20170808Sdelphij * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21170808Sdelphij * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22170808Sdelphij * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23170808Sdelphij * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24170808Sdelphij * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25170808Sdelphij * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26170808Sdelphij * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27170808Sdelphij * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28170808Sdelphij * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29170808Sdelphij * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30170808Sdelphij * POSSIBILITY OF SUCH DAMAGE. 31170808Sdelphij */ 32170808Sdelphij 33170808Sdelphij/* 34170808Sdelphij * tmpfs vnode interface. 35170808Sdelphij */ 36170808Sdelphij#include <sys/cdefs.h> 37170808Sdelphij__FBSDID("$FreeBSD: stable/10/sys/fs/tmpfs/tmpfs_vnops.c 269167 2014-07-28 01:01:20Z kib $"); 38170808Sdelphij 39170808Sdelphij#include <sys/param.h> 40170808Sdelphij#include <sys/fcntl.h> 41170808Sdelphij#include <sys/lockf.h> 42248084Sattilio#include <sys/lock.h> 43170808Sdelphij#include <sys/namei.h> 44170808Sdelphij#include <sys/priv.h> 45170808Sdelphij#include <sys/proc.h> 46248084Sattilio#include <sys/rwlock.h> 47197850Sdelphij#include <sys/sched.h> 48197850Sdelphij#include <sys/sf_buf.h> 49170808Sdelphij#include <sys/stat.h> 50170808Sdelphij#include <sys/systm.h> 51232960Sgleb#include <sys/sysctl.h> 52170808Sdelphij#include <sys/unistd.h> 53170808Sdelphij#include <sys/vnode.h> 54170808Sdelphij 55170808Sdelphij#include <vm/vm.h> 56239065Skib#include <vm/vm_param.h> 57170808Sdelphij#include <vm/vm_object.h> 58170808Sdelphij#include <vm/vm_page.h> 59170808Sdelphij#include <vm/vm_pager.h> 60188929Salc 61170808Sdelphij#include <fs/tmpfs/tmpfs_vnops.h> 62170808Sdelphij#include <fs/tmpfs/tmpfs.h> 63170808Sdelphij 64232960SglebSYSCTL_DECL(_vfs_tmpfs); 65232960Sgleb 66232960Sglebstatic volatile int tmpfs_rename_restarts; 67232960SglebSYSCTL_INT(_vfs_tmpfs, OID_AUTO, rename_restarts, CTLFLAG_RD, 68232960Sgleb __DEVOLATILE(int *, &tmpfs_rename_restarts), 0, 69232960Sgleb "Times rename had to restart due to lock contention"); 70232960Sgleb 71171069Sdelphijstatic int 72170808Sdelphijtmpfs_lookup(struct vop_cachedlookup_args *v) 73170808Sdelphij{ 74170808Sdelphij struct vnode *dvp = v->a_dvp; 75170808Sdelphij struct vnode **vpp = v->a_vpp; 76170808Sdelphij struct componentname *cnp = v->a_cnp; 77170808Sdelphij 78170808Sdelphij int error; 79170808Sdelphij struct tmpfs_dirent *de; 80170808Sdelphij struct tmpfs_node *dnode; 81170808Sdelphij 82170808Sdelphij dnode = VP_TO_TMPFS_DIR(dvp); 83170808Sdelphij *vpp = NULLVP; 84170808Sdelphij 85170808Sdelphij /* Check accessibility of requested node as a first step. */ 86191990Sattilio error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, cnp->cn_thread); 87170808Sdelphij if (error != 0) 88170808Sdelphij goto out; 89170808Sdelphij 90170808Sdelphij /* We cannot be requesting the parent directory of the root node. */ 91170808Sdelphij MPASS(IMPLIES(dnode->tn_type == VDIR && 92170808Sdelphij dnode->tn_dir.tn_parent == dnode, 93170808Sdelphij !(cnp->cn_flags & ISDOTDOT))); 94170808Sdelphij 95197953Sdelphij TMPFS_ASSERT_LOCKED(dnode); 96197953Sdelphij if (dnode->tn_dir.tn_parent == NULL) { 97197953Sdelphij error = ENOENT; 98197953Sdelphij goto out; 99197953Sdelphij } 100170808Sdelphij if (cnp->cn_flags & ISDOTDOT) { 101171799Sdelphij int ltype = 0; 102171799Sdelphij 103176559Sattilio ltype = VOP_ISLOCKED(dvp); 104171802Sdelphij vhold(dvp); 105175294Sattilio VOP_UNLOCK(dvp, 0); 106170808Sdelphij /* Allocate a new vnode on the matching entry. */ 107171799Sdelphij error = tmpfs_alloc_vp(dvp->v_mount, dnode->tn_dir.tn_parent, 108191990Sattilio cnp->cn_lkflags, vpp); 109170808Sdelphij 110175202Sattilio vn_lock(dvp, ltype | LK_RETRY); 111171802Sdelphij vdrop(dvp); 112170808Sdelphij } else if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 113170808Sdelphij VREF(dvp); 114170808Sdelphij *vpp = dvp; 115170808Sdelphij error = 0; 116170808Sdelphij } else { 117188318Skib de = tmpfs_dir_lookup(dnode, NULL, cnp); 118211598Sed if (de != NULL && de->td_node == NULL) 119211598Sed cnp->cn_flags |= ISWHITEOUT; 120211598Sed if (de == NULL || de->td_node == NULL) { 121170808Sdelphij /* The entry was not found in the directory. 122170808Sdelphij * This is OK if we are creating or renaming an 123170808Sdelphij * entry and are working on the last component of 124170808Sdelphij * the path name. */ 125170808Sdelphij if ((cnp->cn_flags & ISLASTCN) && 126170808Sdelphij (cnp->cn_nameiop == CREATE || \ 127211598Sed cnp->cn_nameiop == RENAME || 128211598Sed (cnp->cn_nameiop == DELETE && 129211598Sed cnp->cn_flags & DOWHITEOUT && 130211598Sed cnp->cn_flags & ISWHITEOUT))) { 131170808Sdelphij error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, 132170808Sdelphij cnp->cn_thread); 133170808Sdelphij if (error != 0) 134170808Sdelphij goto out; 135170808Sdelphij 136170808Sdelphij /* Keep the component name in the buffer for 137170808Sdelphij * future uses. */ 138170808Sdelphij cnp->cn_flags |= SAVENAME; 139170808Sdelphij 140170808Sdelphij error = EJUSTRETURN; 141170808Sdelphij } else 142170808Sdelphij error = ENOENT; 143170808Sdelphij } else { 144170808Sdelphij struct tmpfs_node *tnode; 145170808Sdelphij 146170808Sdelphij /* The entry was found, so get its associated 147170808Sdelphij * tmpfs_node. */ 148170808Sdelphij tnode = de->td_node; 149170808Sdelphij 150170808Sdelphij /* If we are not at the last path component and 151170808Sdelphij * found a non-directory or non-link entry (which 152170808Sdelphij * may itself be pointing to a directory), raise 153170808Sdelphij * an error. */ 154170808Sdelphij if ((tnode->tn_type != VDIR && 155170808Sdelphij tnode->tn_type != VLNK) && 156170808Sdelphij !(cnp->cn_flags & ISLASTCN)) { 157170808Sdelphij error = ENOTDIR; 158170808Sdelphij goto out; 159170808Sdelphij } 160170808Sdelphij 161170808Sdelphij /* If we are deleting or renaming the entry, keep 162170808Sdelphij * track of its tmpfs_dirent so that it can be 163170808Sdelphij * easily deleted later. */ 164170808Sdelphij if ((cnp->cn_flags & ISLASTCN) && 165170808Sdelphij (cnp->cn_nameiop == DELETE || 166170808Sdelphij cnp->cn_nameiop == RENAME)) { 167170808Sdelphij error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, 168170808Sdelphij cnp->cn_thread); 169170808Sdelphij if (error != 0) 170170808Sdelphij goto out; 171171070Sdelphij 172170808Sdelphij /* Allocate a new vnode on the matching entry. */ 173171799Sdelphij error = tmpfs_alloc_vp(dvp->v_mount, tnode, 174191990Sattilio cnp->cn_lkflags, vpp); 175170808Sdelphij if (error != 0) 176170808Sdelphij goto out; 177170808Sdelphij 178170808Sdelphij if ((dnode->tn_mode & S_ISTXT) && 179170808Sdelphij VOP_ACCESS(dvp, VADMIN, cnp->cn_cred, cnp->cn_thread) && 180170808Sdelphij VOP_ACCESS(*vpp, VADMIN, cnp->cn_cred, cnp->cn_thread)) { 181170808Sdelphij error = EPERM; 182170808Sdelphij vput(*vpp); 183170808Sdelphij *vpp = NULL; 184170808Sdelphij goto out; 185171070Sdelphij } 186170808Sdelphij cnp->cn_flags |= SAVENAME; 187171799Sdelphij } else { 188171799Sdelphij error = tmpfs_alloc_vp(dvp->v_mount, tnode, 189191990Sattilio cnp->cn_lkflags, vpp); 190170808Sdelphij } 191170808Sdelphij } 192170808Sdelphij } 193170808Sdelphij 194170808Sdelphij /* Store the result of this lookup in the cache. Avoid this if the 195170808Sdelphij * request was for creation, as it does not improve timings on 196170808Sdelphij * emprical tests. */ 197170808Sdelphij if ((cnp->cn_flags & MAKEENTRY) && cnp->cn_nameiop != CREATE) 198170808Sdelphij cache_enter(dvp, *vpp, cnp); 199170808Sdelphij 200170808Sdelphijout: 201170808Sdelphij /* If there were no errors, *vpp cannot be null and it must be 202170808Sdelphij * locked. */ 203176559Sattilio MPASS(IFF(error == 0, *vpp != NULLVP && VOP_ISLOCKED(*vpp))); 204170808Sdelphij 205170808Sdelphij return error; 206170808Sdelphij} 207170808Sdelphij 208171069Sdelphijstatic int 209170808Sdelphijtmpfs_create(struct vop_create_args *v) 210170808Sdelphij{ 211170808Sdelphij struct vnode *dvp = v->a_dvp; 212170808Sdelphij struct vnode **vpp = v->a_vpp; 213170808Sdelphij struct componentname *cnp = v->a_cnp; 214170808Sdelphij struct vattr *vap = v->a_vap; 215170808Sdelphij 216170808Sdelphij MPASS(vap->va_type == VREG || vap->va_type == VSOCK); 217170808Sdelphij 218170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL); 219170808Sdelphij} 220170808Sdelphij 221171069Sdelphijstatic int 222170808Sdelphijtmpfs_mknod(struct vop_mknod_args *v) 223170808Sdelphij{ 224170808Sdelphij struct vnode *dvp = v->a_dvp; 225170808Sdelphij struct vnode **vpp = v->a_vpp; 226170808Sdelphij struct componentname *cnp = v->a_cnp; 227170808Sdelphij struct vattr *vap = v->a_vap; 228170808Sdelphij 229170808Sdelphij if (vap->va_type != VBLK && vap->va_type != VCHR && 230170808Sdelphij vap->va_type != VFIFO) 231170808Sdelphij return EINVAL; 232170808Sdelphij 233170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL); 234170808Sdelphij} 235170808Sdelphij 236171069Sdelphijstatic int 237170808Sdelphijtmpfs_open(struct vop_open_args *v) 238170808Sdelphij{ 239170808Sdelphij struct vnode *vp = v->a_vp; 240170808Sdelphij int mode = v->a_mode; 241170808Sdelphij 242170808Sdelphij int error; 243170808Sdelphij struct tmpfs_node *node; 244170808Sdelphij 245176559Sattilio MPASS(VOP_ISLOCKED(vp)); 246170808Sdelphij 247170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 248171070Sdelphij 249170808Sdelphij /* The file is still active but all its names have been removed 250170808Sdelphij * (e.g. by a "rmdir $(pwd)"). It cannot be opened any more as 251170808Sdelphij * it is about to die. */ 252170808Sdelphij if (node->tn_links < 1) 253170808Sdelphij return (ENOENT); 254170808Sdelphij 255170808Sdelphij /* If the file is marked append-only, deny write requests. */ 256170808Sdelphij if (node->tn_flags & APPEND && (mode & (FWRITE | O_APPEND)) == FWRITE) 257170808Sdelphij error = EPERM; 258170808Sdelphij else { 259170808Sdelphij error = 0; 260250190Skib /* For regular files, the call below is nop. */ 261171070Sdelphij vnode_create_vobject(vp, node->tn_size, v->a_td); 262170808Sdelphij } 263170808Sdelphij 264176559Sattilio MPASS(VOP_ISLOCKED(vp)); 265170808Sdelphij return error; 266170808Sdelphij} 267170808Sdelphij 268171069Sdelphijstatic int 269170808Sdelphijtmpfs_close(struct vop_close_args *v) 270170808Sdelphij{ 271170808Sdelphij struct vnode *vp = v->a_vp; 272170808Sdelphij 273218949Salc /* Update node times. */ 274218949Salc tmpfs_update(vp); 275170808Sdelphij 276218949Salc return (0); 277170808Sdelphij} 278170808Sdelphij 279170808Sdelphijint 280170808Sdelphijtmpfs_access(struct vop_access_args *v) 281170808Sdelphij{ 282170808Sdelphij struct vnode *vp = v->a_vp; 283184413Strasz accmode_t accmode = v->a_accmode; 284170808Sdelphij struct ucred *cred = v->a_cred; 285170808Sdelphij 286170808Sdelphij int error; 287170808Sdelphij struct tmpfs_node *node; 288170808Sdelphij 289176559Sattilio MPASS(VOP_ISLOCKED(vp)); 290170808Sdelphij 291170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 292170808Sdelphij 293170808Sdelphij switch (vp->v_type) { 294170808Sdelphij case VDIR: 295170808Sdelphij /* FALLTHROUGH */ 296170808Sdelphij case VLNK: 297170808Sdelphij /* FALLTHROUGH */ 298170808Sdelphij case VREG: 299184413Strasz if (accmode & VWRITE && vp->v_mount->mnt_flag & MNT_RDONLY) { 300170808Sdelphij error = EROFS; 301170808Sdelphij goto out; 302170808Sdelphij } 303170808Sdelphij break; 304170808Sdelphij 305170808Sdelphij case VBLK: 306170808Sdelphij /* FALLTHROUGH */ 307170808Sdelphij case VCHR: 308170808Sdelphij /* FALLTHROUGH */ 309170808Sdelphij case VSOCK: 310170808Sdelphij /* FALLTHROUGH */ 311170808Sdelphij case VFIFO: 312170808Sdelphij break; 313170808Sdelphij 314170808Sdelphij default: 315170808Sdelphij error = EINVAL; 316170808Sdelphij goto out; 317170808Sdelphij } 318170808Sdelphij 319184413Strasz if (accmode & VWRITE && node->tn_flags & IMMUTABLE) { 320170808Sdelphij error = EPERM; 321170808Sdelphij goto out; 322170808Sdelphij } 323170808Sdelphij 324170808Sdelphij error = vaccess(vp->v_type, node->tn_mode, node->tn_uid, 325184413Strasz node->tn_gid, accmode, cred, NULL); 326170808Sdelphij 327170808Sdelphijout: 328176559Sattilio MPASS(VOP_ISLOCKED(vp)); 329170808Sdelphij 330170808Sdelphij return error; 331170808Sdelphij} 332170808Sdelphij 333170808Sdelphijint 334170808Sdelphijtmpfs_getattr(struct vop_getattr_args *v) 335170808Sdelphij{ 336170808Sdelphij struct vnode *vp = v->a_vp; 337170808Sdelphij struct vattr *vap = v->a_vap; 338170808Sdelphij 339170808Sdelphij struct tmpfs_node *node; 340170808Sdelphij 341170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 342170808Sdelphij 343170808Sdelphij tmpfs_update(vp); 344170808Sdelphij 345170808Sdelphij vap->va_type = vp->v_type; 346170808Sdelphij vap->va_mode = node->tn_mode; 347170808Sdelphij vap->va_nlink = node->tn_links; 348170808Sdelphij vap->va_uid = node->tn_uid; 349170808Sdelphij vap->va_gid = node->tn_gid; 350170808Sdelphij vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 351170808Sdelphij vap->va_fileid = node->tn_id; 352170808Sdelphij vap->va_size = node->tn_size; 353170808Sdelphij vap->va_blocksize = PAGE_SIZE; 354170808Sdelphij vap->va_atime = node->tn_atime; 355170808Sdelphij vap->va_mtime = node->tn_mtime; 356170808Sdelphij vap->va_ctime = node->tn_ctime; 357170808Sdelphij vap->va_birthtime = node->tn_birthtime; 358170808Sdelphij vap->va_gen = node->tn_gen; 359170808Sdelphij vap->va_flags = node->tn_flags; 360170808Sdelphij vap->va_rdev = (vp->v_type == VBLK || vp->v_type == VCHR) ? 361183214Skib node->tn_rdev : NODEV; 362170808Sdelphij vap->va_bytes = round_page(node->tn_size); 363183212Skib vap->va_filerev = 0; 364170808Sdelphij 365170808Sdelphij return 0; 366170808Sdelphij} 367170808Sdelphij 368170808Sdelphijint 369170808Sdelphijtmpfs_setattr(struct vop_setattr_args *v) 370170808Sdelphij{ 371170808Sdelphij struct vnode *vp = v->a_vp; 372170808Sdelphij struct vattr *vap = v->a_vap; 373170808Sdelphij struct ucred *cred = v->a_cred; 374182371Sattilio struct thread *td = curthread; 375170808Sdelphij 376170808Sdelphij int error; 377170808Sdelphij 378176559Sattilio MPASS(VOP_ISLOCKED(vp)); 379170808Sdelphij 380170808Sdelphij error = 0; 381170808Sdelphij 382170808Sdelphij /* Abort if any unsettable attribute is given. */ 383170808Sdelphij if (vap->va_type != VNON || 384170808Sdelphij vap->va_nlink != VNOVAL || 385170808Sdelphij vap->va_fsid != VNOVAL || 386170808Sdelphij vap->va_fileid != VNOVAL || 387170808Sdelphij vap->va_blocksize != VNOVAL || 388170808Sdelphij vap->va_gen != VNOVAL || 389170808Sdelphij vap->va_rdev != VNOVAL || 390170808Sdelphij vap->va_bytes != VNOVAL) 391170808Sdelphij error = EINVAL; 392170808Sdelphij 393170808Sdelphij if (error == 0 && (vap->va_flags != VNOVAL)) 394182371Sattilio error = tmpfs_chflags(vp, vap->va_flags, cred, td); 395170808Sdelphij 396170808Sdelphij if (error == 0 && (vap->va_size != VNOVAL)) 397182371Sattilio error = tmpfs_chsize(vp, vap->va_size, cred, td); 398170808Sdelphij 399170808Sdelphij if (error == 0 && (vap->va_uid != VNOVAL || vap->va_gid != VNOVAL)) 400182371Sattilio error = tmpfs_chown(vp, vap->va_uid, vap->va_gid, cred, td); 401170808Sdelphij 402170808Sdelphij if (error == 0 && (vap->va_mode != (mode_t)VNOVAL)) 403182371Sattilio error = tmpfs_chmod(vp, vap->va_mode, cred, td); 404170808Sdelphij 405170808Sdelphij if (error == 0 && ((vap->va_atime.tv_sec != VNOVAL && 406170808Sdelphij vap->va_atime.tv_nsec != VNOVAL) || 407170808Sdelphij (vap->va_mtime.tv_sec != VNOVAL && 408170808Sdelphij vap->va_mtime.tv_nsec != VNOVAL) || 409170808Sdelphij (vap->va_birthtime.tv_sec != VNOVAL && 410170808Sdelphij vap->va_birthtime.tv_nsec != VNOVAL))) 411267816Skib error = tmpfs_chtimes(vp, vap, cred, td); 412170808Sdelphij 413170808Sdelphij /* Update the node times. We give preference to the error codes 414170808Sdelphij * generated by this function rather than the ones that may arise 415170808Sdelphij * from tmpfs_update. */ 416170808Sdelphij tmpfs_update(vp); 417170808Sdelphij 418176559Sattilio MPASS(VOP_ISLOCKED(vp)); 419170808Sdelphij 420170808Sdelphij return error; 421170808Sdelphij} 422170808Sdelphij 423197850Sdelphijstatic int 424170808Sdelphijtmpfs_read(struct vop_read_args *v) 425170808Sdelphij{ 426254601Skib struct vnode *vp; 427254601Skib struct uio *uio; 428170808Sdelphij struct tmpfs_node *node; 429170808Sdelphij 430254601Skib vp = v->a_vp; 431254601Skib if (vp->v_type != VREG) 432254601Skib return (EISDIR); 433254601Skib uio = v->a_uio; 434254601Skib if (uio->uio_offset < 0) 435254601Skib return (EINVAL); 436170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 437170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED; 438254601Skib return (uiomove_object(node->tn_reg.tn_aobj, node->tn_size, uio)); 439170808Sdelphij} 440170808Sdelphij 441171069Sdelphijstatic int 442170808Sdelphijtmpfs_write(struct vop_write_args *v) 443170808Sdelphij{ 444254601Skib struct vnode *vp; 445254601Skib struct uio *uio; 446254601Skib struct tmpfs_node *node; 447254601Skib off_t oldsize; 448254601Skib int error, ioflag; 449170808Sdelphij boolean_t extended; 450170808Sdelphij 451254601Skib vp = v->a_vp; 452254601Skib uio = v->a_uio; 453254601Skib ioflag = v->a_ioflag; 454254601Skib error = 0; 455170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 456170808Sdelphij oldsize = node->tn_size; 457170808Sdelphij 458254601Skib if (uio->uio_offset < 0 || vp->v_type != VREG) 459254601Skib return (EINVAL); 460254601Skib if (uio->uio_resid == 0) 461254601Skib return (0); 462170808Sdelphij if (ioflag & IO_APPEND) 463170808Sdelphij uio->uio_offset = node->tn_size; 464171070Sdelphij if (uio->uio_offset + uio->uio_resid > 465170808Sdelphij VFS_TO_TMPFS(vp->v_mount)->tm_maxfilesize) 466170808Sdelphij return (EFBIG); 467207719Strasz if (vn_rlimit_fsize(vp, uio, uio->uio_td)) 468207662Strasz return (EFBIG); 469170808Sdelphij extended = uio->uio_offset + uio->uio_resid > node->tn_size; 470170808Sdelphij if (extended) { 471230180Salc error = tmpfs_reg_resize(vp, uio->uio_offset + uio->uio_resid, 472230180Salc FALSE); 473170808Sdelphij if (error != 0) 474170808Sdelphij goto out; 475170808Sdelphij } 476170808Sdelphij 477254601Skib error = uiomove_object(node->tn_reg.tn_aobj, node->tn_size, uio); 478170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED | TMPFS_NODE_MODIFIED | 479170808Sdelphij (extended ? TMPFS_NODE_CHANGED : 0); 480170808Sdelphij if (node->tn_mode & (S_ISUID | S_ISGID)) { 481170808Sdelphij if (priv_check_cred(v->a_cred, PRIV_VFS_RETAINSUGID, 0)) 482170808Sdelphij node->tn_mode &= ~(S_ISUID | S_ISGID); 483170808Sdelphij } 484170808Sdelphij if (error != 0) 485230180Salc (void)tmpfs_reg_resize(vp, oldsize, TRUE); 486170808Sdelphij 487170808Sdelphijout: 488170808Sdelphij MPASS(IMPLIES(error == 0, uio->uio_resid == 0)); 489170808Sdelphij MPASS(IMPLIES(error != 0, oldsize == node->tn_size)); 490170808Sdelphij 491254601Skib return (error); 492170808Sdelphij} 493170808Sdelphij 494171069Sdelphijstatic int 495170808Sdelphijtmpfs_fsync(struct vop_fsync_args *v) 496170808Sdelphij{ 497170808Sdelphij struct vnode *vp = v->a_vp; 498170808Sdelphij 499176559Sattilio MPASS(VOP_ISLOCKED(vp)); 500170808Sdelphij 501170808Sdelphij tmpfs_update(vp); 502170808Sdelphij 503170808Sdelphij return 0; 504170808Sdelphij} 505170808Sdelphij 506171069Sdelphijstatic int 507170808Sdelphijtmpfs_remove(struct vop_remove_args *v) 508170808Sdelphij{ 509170808Sdelphij struct vnode *dvp = v->a_dvp; 510170808Sdelphij struct vnode *vp = v->a_vp; 511170808Sdelphij 512170808Sdelphij int error; 513170808Sdelphij struct tmpfs_dirent *de; 514170808Sdelphij struct tmpfs_mount *tmp; 515170808Sdelphij struct tmpfs_node *dnode; 516170808Sdelphij struct tmpfs_node *node; 517170808Sdelphij 518176559Sattilio MPASS(VOP_ISLOCKED(dvp)); 519176559Sattilio MPASS(VOP_ISLOCKED(vp)); 520170808Sdelphij 521170808Sdelphij if (vp->v_type == VDIR) { 522170808Sdelphij error = EISDIR; 523170808Sdelphij goto out; 524170808Sdelphij } 525170808Sdelphij 526170808Sdelphij dnode = VP_TO_TMPFS_DIR(dvp); 527170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 528170808Sdelphij tmp = VFS_TO_TMPFS(vp->v_mount); 529188318Skib de = tmpfs_dir_lookup(dnode, node, v->a_cnp); 530170808Sdelphij MPASS(de != NULL); 531170808Sdelphij 532170808Sdelphij /* Files marked as immutable or append-only cannot be deleted. */ 533170808Sdelphij if ((node->tn_flags & (IMMUTABLE | APPEND | NOUNLINK)) || 534170808Sdelphij (dnode->tn_flags & APPEND)) { 535170808Sdelphij error = EPERM; 536170808Sdelphij goto out; 537170808Sdelphij } 538170808Sdelphij 539170808Sdelphij /* Remove the entry from the directory; as it is a file, we do not 540170808Sdelphij * have to change the number of hard links of the directory. */ 541170808Sdelphij tmpfs_dir_detach(dvp, de); 542211598Sed if (v->a_cnp->cn_flags & DOWHITEOUT) 543211598Sed tmpfs_dir_whiteout_add(dvp, v->a_cnp); 544170808Sdelphij 545170808Sdelphij /* Free the directory entry we just deleted. Note that the node 546170808Sdelphij * referred by it will not be removed until the vnode is really 547170808Sdelphij * reclaimed. */ 548245115Sgleb tmpfs_free_dirent(tmp, de); 549170808Sdelphij 550218949Salc node->tn_status |= TMPFS_NODE_ACCESSED | TMPFS_NODE_CHANGED; 551170808Sdelphij error = 0; 552170808Sdelphij 553170808Sdelphijout: 554170808Sdelphij 555170808Sdelphij return error; 556170808Sdelphij} 557170808Sdelphij 558171069Sdelphijstatic int 559170808Sdelphijtmpfs_link(struct vop_link_args *v) 560170808Sdelphij{ 561170808Sdelphij struct vnode *dvp = v->a_tdvp; 562170808Sdelphij struct vnode *vp = v->a_vp; 563170808Sdelphij struct componentname *cnp = v->a_cnp; 564170808Sdelphij 565170808Sdelphij int error; 566170808Sdelphij struct tmpfs_dirent *de; 567170808Sdelphij struct tmpfs_node *node; 568170808Sdelphij 569176559Sattilio MPASS(VOP_ISLOCKED(dvp)); 570170808Sdelphij MPASS(cnp->cn_flags & HASBUF); 571170808Sdelphij MPASS(dvp != vp); /* XXX When can this be false? */ 572170808Sdelphij 573170808Sdelphij /* XXX: Why aren't the following two tests done by the caller? */ 574170808Sdelphij 575170808Sdelphij /* Hard links of directories are forbidden. */ 576170808Sdelphij if (vp->v_type == VDIR) { 577170808Sdelphij error = EPERM; 578170808Sdelphij goto out; 579170808Sdelphij } 580170808Sdelphij 581170808Sdelphij /* Cannot create cross-device links. */ 582170808Sdelphij if (dvp->v_mount != vp->v_mount) { 583170808Sdelphij error = EXDEV; 584170808Sdelphij goto out; 585170808Sdelphij } 586170808Sdelphij 587269167Skib node = VP_TO_TMPFS_NODE(vp); 588269167Skib 589170808Sdelphij /* Ensure that we do not overflow the maximum number of links imposed 590170808Sdelphij * by the system. */ 591170808Sdelphij MPASS(node->tn_links <= LINK_MAX); 592170808Sdelphij if (node->tn_links == LINK_MAX) { 593170808Sdelphij error = EMLINK; 594170808Sdelphij goto out; 595170808Sdelphij } 596170808Sdelphij 597170808Sdelphij /* We cannot create links of files marked immutable or append-only. */ 598170808Sdelphij if (node->tn_flags & (IMMUTABLE | APPEND)) { 599170808Sdelphij error = EPERM; 600170808Sdelphij goto out; 601170808Sdelphij } 602170808Sdelphij 603170808Sdelphij /* Allocate a new directory entry to represent the node. */ 604170808Sdelphij error = tmpfs_alloc_dirent(VFS_TO_TMPFS(vp->v_mount), node, 605170808Sdelphij cnp->cn_nameptr, cnp->cn_namelen, &de); 606170808Sdelphij if (error != 0) 607170808Sdelphij goto out; 608170808Sdelphij 609170808Sdelphij /* Insert the new directory entry into the appropriate directory. */ 610211598Sed if (cnp->cn_flags & ISWHITEOUT) 611211598Sed tmpfs_dir_whiteout_remove(dvp, cnp); 612170808Sdelphij tmpfs_dir_attach(dvp, de); 613170808Sdelphij 614170808Sdelphij /* vp link count has changed, so update node times. */ 615170808Sdelphij node->tn_status |= TMPFS_NODE_CHANGED; 616170808Sdelphij tmpfs_update(vp); 617170808Sdelphij 618170808Sdelphij error = 0; 619171070Sdelphij 620170808Sdelphijout: 621170808Sdelphij return error; 622170808Sdelphij} 623170808Sdelphij 624232960Sgleb/* 625232960Sgleb * We acquire all but fdvp locks using non-blocking acquisitions. If we 626232960Sgleb * fail to acquire any lock in the path we will drop all held locks, 627232960Sgleb * acquire the new lock in a blocking fashion, and then release it and 628232960Sgleb * restart the rename. This acquire/release step ensures that we do not 629232960Sgleb * spin on a lock waiting for release. On error release all vnode locks 630232960Sgleb * and decrement references the way tmpfs_rename() would do. 631232960Sgleb */ 632171069Sdelphijstatic int 633232960Sglebtmpfs_rename_relock(struct vnode *fdvp, struct vnode **fvpp, 634232960Sgleb struct vnode *tdvp, struct vnode **tvpp, 635232960Sgleb struct componentname *fcnp, struct componentname *tcnp) 636232960Sgleb{ 637232960Sgleb struct vnode *nvp; 638232960Sgleb struct mount *mp; 639232960Sgleb struct tmpfs_dirent *de; 640232960Sgleb int error, restarts = 0; 641232960Sgleb 642232960Sgleb VOP_UNLOCK(tdvp, 0); 643232960Sgleb if (*tvpp != NULL && *tvpp != tdvp) 644232960Sgleb VOP_UNLOCK(*tvpp, 0); 645232960Sgleb mp = fdvp->v_mount; 646232960Sgleb 647232960Sglebrelock: 648232960Sgleb restarts += 1; 649232960Sgleb error = vn_lock(fdvp, LK_EXCLUSIVE); 650232960Sgleb if (error) 651232960Sgleb goto releout; 652232960Sgleb if (vn_lock(tdvp, LK_EXCLUSIVE | LK_NOWAIT) != 0) { 653232960Sgleb VOP_UNLOCK(fdvp, 0); 654232960Sgleb error = vn_lock(tdvp, LK_EXCLUSIVE); 655232960Sgleb if (error) 656232960Sgleb goto releout; 657232960Sgleb VOP_UNLOCK(tdvp, 0); 658232960Sgleb goto relock; 659232960Sgleb } 660232960Sgleb /* 661232960Sgleb * Re-resolve fvp to be certain it still exists and fetch the 662232960Sgleb * correct vnode. 663232960Sgleb */ 664232960Sgleb de = tmpfs_dir_lookup(VP_TO_TMPFS_DIR(fdvp), NULL, fcnp); 665232960Sgleb if (de == NULL) { 666232960Sgleb VOP_UNLOCK(fdvp, 0); 667232960Sgleb VOP_UNLOCK(tdvp, 0); 668232960Sgleb if ((fcnp->cn_flags & ISDOTDOT) != 0 || 669232960Sgleb (fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.')) 670232960Sgleb error = EINVAL; 671232960Sgleb else 672232960Sgleb error = ENOENT; 673232960Sgleb goto releout; 674232960Sgleb } 675232960Sgleb error = tmpfs_alloc_vp(mp, de->td_node, LK_EXCLUSIVE | LK_NOWAIT, &nvp); 676232960Sgleb if (error != 0) { 677232960Sgleb VOP_UNLOCK(fdvp, 0); 678232960Sgleb VOP_UNLOCK(tdvp, 0); 679232960Sgleb if (error != EBUSY) 680232960Sgleb goto releout; 681232960Sgleb error = tmpfs_alloc_vp(mp, de->td_node, LK_EXCLUSIVE, &nvp); 682232960Sgleb if (error != 0) 683232960Sgleb goto releout; 684232960Sgleb VOP_UNLOCK(nvp, 0); 685232960Sgleb /* 686232960Sgleb * Concurrent rename race. 687232960Sgleb */ 688232960Sgleb if (nvp == tdvp) { 689232960Sgleb vrele(nvp); 690232960Sgleb error = EINVAL; 691232960Sgleb goto releout; 692232960Sgleb } 693232960Sgleb vrele(*fvpp); 694232960Sgleb *fvpp = nvp; 695232960Sgleb goto relock; 696232960Sgleb } 697232960Sgleb vrele(*fvpp); 698232960Sgleb *fvpp = nvp; 699232960Sgleb VOP_UNLOCK(*fvpp, 0); 700232960Sgleb /* 701232960Sgleb * Re-resolve tvp and acquire the vnode lock if present. 702232960Sgleb */ 703232960Sgleb de = tmpfs_dir_lookup(VP_TO_TMPFS_DIR(tdvp), NULL, tcnp); 704232960Sgleb /* 705232960Sgleb * If tvp disappeared we just carry on. 706232960Sgleb */ 707232960Sgleb if (de == NULL && *tvpp != NULL) { 708232960Sgleb vrele(*tvpp); 709232960Sgleb *tvpp = NULL; 710232960Sgleb } 711232960Sgleb /* 712232960Sgleb * Get the tvp ino if the lookup succeeded. We may have to restart 713232960Sgleb * if the non-blocking acquire fails. 714232960Sgleb */ 715232960Sgleb if (de != NULL) { 716232960Sgleb nvp = NULL; 717232960Sgleb error = tmpfs_alloc_vp(mp, de->td_node, 718232960Sgleb LK_EXCLUSIVE | LK_NOWAIT, &nvp); 719232960Sgleb if (*tvpp != NULL) 720232960Sgleb vrele(*tvpp); 721232960Sgleb *tvpp = nvp; 722232960Sgleb if (error != 0) { 723232960Sgleb VOP_UNLOCK(fdvp, 0); 724232960Sgleb VOP_UNLOCK(tdvp, 0); 725232960Sgleb if (error != EBUSY) 726232960Sgleb goto releout; 727232960Sgleb error = tmpfs_alloc_vp(mp, de->td_node, LK_EXCLUSIVE, 728232960Sgleb &nvp); 729232960Sgleb if (error != 0) 730232960Sgleb goto releout; 731232960Sgleb VOP_UNLOCK(nvp, 0); 732232960Sgleb /* 733232960Sgleb * fdvp contains fvp, thus tvp (=fdvp) is not empty. 734232960Sgleb */ 735232960Sgleb if (nvp == fdvp) { 736232960Sgleb error = ENOTEMPTY; 737232960Sgleb goto releout; 738232960Sgleb } 739232960Sgleb goto relock; 740232960Sgleb } 741232960Sgleb } 742232960Sgleb tmpfs_rename_restarts += restarts; 743232960Sgleb 744232960Sgleb return (0); 745232960Sgleb 746232960Sglebreleout: 747232960Sgleb vrele(fdvp); 748232960Sgleb vrele(*fvpp); 749232960Sgleb vrele(tdvp); 750232960Sgleb if (*tvpp != NULL) 751232960Sgleb vrele(*tvpp); 752232960Sgleb tmpfs_rename_restarts += restarts; 753232960Sgleb 754232960Sgleb return (error); 755232960Sgleb} 756232960Sgleb 757232960Sglebstatic int 758170808Sdelphijtmpfs_rename(struct vop_rename_args *v) 759170808Sdelphij{ 760170808Sdelphij struct vnode *fdvp = v->a_fdvp; 761170808Sdelphij struct vnode *fvp = v->a_fvp; 762170808Sdelphij struct componentname *fcnp = v->a_fcnp; 763170808Sdelphij struct vnode *tdvp = v->a_tdvp; 764170808Sdelphij struct vnode *tvp = v->a_tvp; 765170808Sdelphij struct componentname *tcnp = v->a_tcnp; 766232960Sgleb struct mount *mp = NULL; 767170808Sdelphij 768170808Sdelphij char *newname; 769170808Sdelphij int error; 770170808Sdelphij struct tmpfs_dirent *de; 771197953Sdelphij struct tmpfs_mount *tmp; 772170808Sdelphij struct tmpfs_node *fdnode; 773170808Sdelphij struct tmpfs_node *fnode; 774171799Sdelphij struct tmpfs_node *tnode; 775170808Sdelphij struct tmpfs_node *tdnode; 776170808Sdelphij 777176559Sattilio MPASS(VOP_ISLOCKED(tdvp)); 778176559Sattilio MPASS(IMPLIES(tvp != NULL, VOP_ISLOCKED(tvp))); 779170808Sdelphij MPASS(fcnp->cn_flags & HASBUF); 780170808Sdelphij MPASS(tcnp->cn_flags & HASBUF); 781170808Sdelphij 782170808Sdelphij /* Disallow cross-device renames. 783170808Sdelphij * XXX Why isn't this done by the caller? */ 784170808Sdelphij if (fvp->v_mount != tdvp->v_mount || 785170808Sdelphij (tvp != NULL && fvp->v_mount != tvp->v_mount)) { 786170808Sdelphij error = EXDEV; 787170808Sdelphij goto out; 788170808Sdelphij } 789170808Sdelphij 790170808Sdelphij /* If source and target are the same file, there is nothing to do. */ 791170808Sdelphij if (fvp == tvp) { 792170808Sdelphij error = 0; 793170808Sdelphij goto out; 794170808Sdelphij } 795170808Sdelphij 796173725Sdelphij /* If we need to move the directory between entries, lock the 797173725Sdelphij * source so that we can safely operate on it. */ 798232960Sgleb if (fdvp != tdvp && fdvp != tvp) { 799232960Sgleb if (vn_lock(fdvp, LK_EXCLUSIVE | LK_NOWAIT) != 0) { 800232960Sgleb mp = tdvp->v_mount; 801232960Sgleb error = vfs_busy(mp, 0); 802232960Sgleb if (error != 0) { 803232960Sgleb mp = NULL; 804232960Sgleb goto out; 805232960Sgleb } 806232960Sgleb error = tmpfs_rename_relock(fdvp, &fvp, tdvp, &tvp, 807232960Sgleb fcnp, tcnp); 808232960Sgleb if (error != 0) { 809232960Sgleb vfs_unbusy(mp); 810232960Sgleb return (error); 811232960Sgleb } 812232960Sgleb ASSERT_VOP_ELOCKED(fdvp, 813232960Sgleb "tmpfs_rename: fdvp not locked"); 814232960Sgleb ASSERT_VOP_ELOCKED(tdvp, 815232960Sgleb "tmpfs_rename: tdvp not locked"); 816232960Sgleb if (tvp != NULL) 817232960Sgleb ASSERT_VOP_ELOCKED(tvp, 818232960Sgleb "tmpfs_rename: tvp not locked"); 819232960Sgleb if (fvp == tvp) { 820232960Sgleb error = 0; 821232960Sgleb goto out_locked; 822232960Sgleb } 823232960Sgleb } 824232960Sgleb } 825232960Sgleb 826232960Sgleb tmp = VFS_TO_TMPFS(tdvp->v_mount); 827232960Sgleb tdnode = VP_TO_TMPFS_DIR(tdvp); 828232960Sgleb tnode = (tvp == NULL) ? NULL : VP_TO_TMPFS_NODE(tvp); 829173725Sdelphij fdnode = VP_TO_TMPFS_DIR(fdvp); 830173725Sdelphij fnode = VP_TO_TMPFS_NODE(fvp); 831188318Skib de = tmpfs_dir_lookup(fdnode, fnode, fcnp); 832173725Sdelphij 833212305Sivoras /* Entry can disappear before we lock fdvp, 834212305Sivoras * also avoid manipulating '.' and '..' entries. */ 835170808Sdelphij if (de == NULL) { 836212305Sivoras if ((fcnp->cn_flags & ISDOTDOT) != 0 || 837212305Sivoras (fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.')) 838212305Sivoras error = EINVAL; 839212305Sivoras else 840212305Sivoras error = ENOENT; 841173725Sdelphij goto out_locked; 842170808Sdelphij } 843170808Sdelphij MPASS(de->td_node == fnode); 844170808Sdelphij 845171070Sdelphij /* If re-naming a directory to another preexisting directory 846170808Sdelphij * ensure that the target directory is empty so that its 847171070Sdelphij * removal causes no side effects. 848170808Sdelphij * Kern_rename gurantees the destination to be a directory 849170808Sdelphij * if the source is one. */ 850170808Sdelphij if (tvp != NULL) { 851171799Sdelphij MPASS(tnode != NULL); 852171070Sdelphij 853170808Sdelphij if ((tnode->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) || 854170808Sdelphij (tdnode->tn_flags & (APPEND | IMMUTABLE))) { 855170808Sdelphij error = EPERM; 856173725Sdelphij goto out_locked; 857170808Sdelphij } 858170808Sdelphij 859171799Sdelphij if (fnode->tn_type == VDIR && tnode->tn_type == VDIR) { 860171799Sdelphij if (tnode->tn_size > 0) { 861171799Sdelphij error = ENOTEMPTY; 862173725Sdelphij goto out_locked; 863171799Sdelphij } 864171799Sdelphij } else if (fnode->tn_type == VDIR && tnode->tn_type != VDIR) { 865171799Sdelphij error = ENOTDIR; 866173725Sdelphij goto out_locked; 867171799Sdelphij } else if (fnode->tn_type != VDIR && tnode->tn_type == VDIR) { 868171799Sdelphij error = EISDIR; 869173725Sdelphij goto out_locked; 870171799Sdelphij } else { 871171799Sdelphij MPASS(fnode->tn_type != VDIR && 872171799Sdelphij tnode->tn_type != VDIR); 873170808Sdelphij } 874170808Sdelphij } 875170808Sdelphij 876170808Sdelphij if ((fnode->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) 877170808Sdelphij || (fdnode->tn_flags & (APPEND | IMMUTABLE))) { 878170808Sdelphij error = EPERM; 879170808Sdelphij goto out_locked; 880170808Sdelphij } 881170808Sdelphij 882170808Sdelphij /* Ensure that we have enough memory to hold the new name, if it 883170808Sdelphij * has to be changed. */ 884170808Sdelphij if (fcnp->cn_namelen != tcnp->cn_namelen || 885183299Sobrien bcmp(fcnp->cn_nameptr, tcnp->cn_nameptr, fcnp->cn_namelen) != 0) { 886171087Sdelphij newname = malloc(tcnp->cn_namelen, M_TMPFSNAME, M_WAITOK); 887170808Sdelphij } else 888170808Sdelphij newname = NULL; 889170808Sdelphij 890170808Sdelphij /* If the node is being moved to another directory, we have to do 891170808Sdelphij * the move. */ 892170808Sdelphij if (fdnode != tdnode) { 893170808Sdelphij /* In case we are moving a directory, we have to adjust its 894170808Sdelphij * parent to point to the new parent. */ 895170808Sdelphij if (de->td_node->tn_type == VDIR) { 896170808Sdelphij struct tmpfs_node *n; 897170808Sdelphij 898170808Sdelphij /* Ensure the target directory is not a child of the 899170808Sdelphij * directory being moved. Otherwise, we'd end up 900170808Sdelphij * with stale nodes. */ 901170808Sdelphij n = tdnode; 902197953Sdelphij /* TMPFS_LOCK garanties that no nodes are freed while 903197953Sdelphij * traversing the list. Nodes can only be marked as 904197953Sdelphij * removed: tn_parent == NULL. */ 905197953Sdelphij TMPFS_LOCK(tmp); 906197953Sdelphij TMPFS_NODE_LOCK(n); 907170808Sdelphij while (n != n->tn_dir.tn_parent) { 908197953Sdelphij struct tmpfs_node *parent; 909197953Sdelphij 910170808Sdelphij if (n == fnode) { 911197953Sdelphij TMPFS_NODE_UNLOCK(n); 912197953Sdelphij TMPFS_UNLOCK(tmp); 913170808Sdelphij error = EINVAL; 914170808Sdelphij if (newname != NULL) 915171087Sdelphij free(newname, M_TMPFSNAME); 916170808Sdelphij goto out_locked; 917170808Sdelphij } 918197953Sdelphij parent = n->tn_dir.tn_parent; 919197953Sdelphij TMPFS_NODE_UNLOCK(n); 920197953Sdelphij if (parent == NULL) { 921197953Sdelphij n = NULL; 922197953Sdelphij break; 923197953Sdelphij } 924197953Sdelphij TMPFS_NODE_LOCK(parent); 925197953Sdelphij if (parent->tn_dir.tn_parent == NULL) { 926197953Sdelphij TMPFS_NODE_UNLOCK(parent); 927197953Sdelphij n = NULL; 928197953Sdelphij break; 929197953Sdelphij } 930197953Sdelphij n = parent; 931170808Sdelphij } 932197953Sdelphij TMPFS_UNLOCK(tmp); 933197953Sdelphij if (n == NULL) { 934197953Sdelphij error = EINVAL; 935197953Sdelphij if (newname != NULL) 936197953Sdelphij free(newname, M_TMPFSNAME); 937197953Sdelphij goto out_locked; 938197953Sdelphij } 939197953Sdelphij TMPFS_NODE_UNLOCK(n); 940170808Sdelphij 941170808Sdelphij /* Adjust the parent pointer. */ 942170808Sdelphij TMPFS_VALIDATE_DIR(fnode); 943197953Sdelphij TMPFS_NODE_LOCK(de->td_node); 944170808Sdelphij de->td_node->tn_dir.tn_parent = tdnode; 945197953Sdelphij TMPFS_NODE_UNLOCK(de->td_node); 946170808Sdelphij 947170808Sdelphij /* As a result of changing the target of the '..' 948170808Sdelphij * entry, the link count of the source and target 949170808Sdelphij * directories has to be adjusted. */ 950197953Sdelphij TMPFS_NODE_LOCK(tdnode); 951197953Sdelphij TMPFS_ASSERT_LOCKED(tdnode); 952197953Sdelphij tdnode->tn_links++; 953197953Sdelphij TMPFS_NODE_UNLOCK(tdnode); 954197953Sdelphij 955197953Sdelphij TMPFS_NODE_LOCK(fdnode); 956197953Sdelphij TMPFS_ASSERT_LOCKED(fdnode); 957170808Sdelphij fdnode->tn_links--; 958197953Sdelphij TMPFS_NODE_UNLOCK(fdnode); 959170808Sdelphij } 960170808Sdelphij } 961170808Sdelphij 962245115Sgleb /* Do the move: just remove the entry from the source directory 963245115Sgleb * and insert it into the target one. */ 964245115Sgleb tmpfs_dir_detach(fdvp, de); 965245115Sgleb 966245115Sgleb if (fcnp->cn_flags & DOWHITEOUT) 967245115Sgleb tmpfs_dir_whiteout_add(fdvp, fcnp); 968245115Sgleb if (tcnp->cn_flags & ISWHITEOUT) 969245115Sgleb tmpfs_dir_whiteout_remove(tdvp, tcnp); 970245115Sgleb 971170808Sdelphij /* If the name has changed, we need to make it effective by changing 972170808Sdelphij * it in the directory entry. */ 973170808Sdelphij if (newname != NULL) { 974170808Sdelphij MPASS(tcnp->cn_namelen <= MAXNAMLEN); 975170808Sdelphij 976245115Sgleb free(de->ud.td_name, M_TMPFSNAME); 977245115Sgleb de->ud.td_name = newname; 978245115Sgleb tmpfs_dirent_init(de, tcnp->cn_nameptr, tcnp->cn_namelen); 979170808Sdelphij 980170808Sdelphij fnode->tn_status |= TMPFS_NODE_CHANGED; 981170808Sdelphij tdnode->tn_status |= TMPFS_NODE_MODIFIED; 982170808Sdelphij } 983170808Sdelphij 984170808Sdelphij /* If we are overwriting an entry, we have to remove the old one 985170808Sdelphij * from the target directory. */ 986170808Sdelphij if (tvp != NULL) { 987245115Sgleb struct tmpfs_dirent *tde; 988245115Sgleb 989170808Sdelphij /* Remove the old entry from the target directory. */ 990245115Sgleb tde = tmpfs_dir_lookup(tdnode, tnode, tcnp); 991245115Sgleb tmpfs_dir_detach(tdvp, tde); 992170808Sdelphij 993170808Sdelphij /* Free the directory entry we just deleted. Note that the 994170808Sdelphij * node referred by it will not be removed until the vnode is 995170808Sdelphij * really reclaimed. */ 996245115Sgleb tmpfs_free_dirent(VFS_TO_TMPFS(tvp->v_mount), tde); 997170808Sdelphij } 998245115Sgleb 999245115Sgleb tmpfs_dir_attach(tdvp, de); 1000245115Sgleb 1001226987Spho cache_purge(fvp); 1002232401Sjhb if (tvp != NULL) 1003232401Sjhb cache_purge(tvp); 1004248422Skib cache_purge_negative(tdvp); 1005170808Sdelphij 1006170808Sdelphij error = 0; 1007170808Sdelphij 1008170808Sdelphijout_locked: 1009227822Sivoras if (fdvp != tdvp && fdvp != tvp) 1010175294Sattilio VOP_UNLOCK(fdvp, 0); 1011170808Sdelphij 1012170808Sdelphijout: 1013170808Sdelphij /* Release target nodes. */ 1014170808Sdelphij /* XXX: I don't understand when tdvp can be the same as tvp, but 1015170808Sdelphij * other code takes care of this... */ 1016170808Sdelphij if (tdvp == tvp) 1017170808Sdelphij vrele(tdvp); 1018170808Sdelphij else 1019170808Sdelphij vput(tdvp); 1020170808Sdelphij if (tvp != NULL) 1021170808Sdelphij vput(tvp); 1022170808Sdelphij 1023170808Sdelphij /* Release source nodes. */ 1024170808Sdelphij vrele(fdvp); 1025170808Sdelphij vrele(fvp); 1026170808Sdelphij 1027232960Sgleb if (mp != NULL) 1028232960Sgleb vfs_unbusy(mp); 1029232960Sgleb 1030170808Sdelphij return error; 1031170808Sdelphij} 1032170808Sdelphij 1033171069Sdelphijstatic int 1034170808Sdelphijtmpfs_mkdir(struct vop_mkdir_args *v) 1035170808Sdelphij{ 1036170808Sdelphij struct vnode *dvp = v->a_dvp; 1037170808Sdelphij struct vnode **vpp = v->a_vpp; 1038170808Sdelphij struct componentname *cnp = v->a_cnp; 1039170808Sdelphij struct vattr *vap = v->a_vap; 1040170808Sdelphij 1041170808Sdelphij MPASS(vap->va_type == VDIR); 1042170808Sdelphij 1043170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL); 1044170808Sdelphij} 1045170808Sdelphij 1046171069Sdelphijstatic int 1047170808Sdelphijtmpfs_rmdir(struct vop_rmdir_args *v) 1048170808Sdelphij{ 1049170808Sdelphij struct vnode *dvp = v->a_dvp; 1050170808Sdelphij struct vnode *vp = v->a_vp; 1051170808Sdelphij 1052170808Sdelphij int error; 1053170808Sdelphij struct tmpfs_dirent *de; 1054170808Sdelphij struct tmpfs_mount *tmp; 1055170808Sdelphij struct tmpfs_node *dnode; 1056170808Sdelphij struct tmpfs_node *node; 1057170808Sdelphij 1058176559Sattilio MPASS(VOP_ISLOCKED(dvp)); 1059176559Sattilio MPASS(VOP_ISLOCKED(vp)); 1060170808Sdelphij 1061170808Sdelphij tmp = VFS_TO_TMPFS(dvp->v_mount); 1062170808Sdelphij dnode = VP_TO_TMPFS_DIR(dvp); 1063170808Sdelphij node = VP_TO_TMPFS_DIR(vp); 1064170808Sdelphij 1065171070Sdelphij /* Directories with more than two entries ('.' and '..') cannot be 1066171070Sdelphij * removed. */ 1067171070Sdelphij if (node->tn_size > 0) { 1068171070Sdelphij error = ENOTEMPTY; 1069171070Sdelphij goto out; 1070171070Sdelphij } 1071170808Sdelphij 1072170808Sdelphij if ((dnode->tn_flags & APPEND) 1073170808Sdelphij || (node->tn_flags & (NOUNLINK | IMMUTABLE | APPEND))) { 1074170808Sdelphij error = EPERM; 1075170808Sdelphij goto out; 1076170808Sdelphij } 1077170808Sdelphij 1078171070Sdelphij /* This invariant holds only if we are not trying to remove "..". 1079171070Sdelphij * We checked for that above so this is safe now. */ 1080170808Sdelphij MPASS(node->tn_dir.tn_parent == dnode); 1081170808Sdelphij 1082170808Sdelphij /* Get the directory entry associated with node (vp). This was 1083170808Sdelphij * filled by tmpfs_lookup while looking up the entry. */ 1084188318Skib de = tmpfs_dir_lookup(dnode, node, v->a_cnp); 1085170808Sdelphij MPASS(TMPFS_DIRENT_MATCHES(de, 1086170808Sdelphij v->a_cnp->cn_nameptr, 1087170808Sdelphij v->a_cnp->cn_namelen)); 1088170808Sdelphij 1089170808Sdelphij /* Check flags to see if we are allowed to remove the directory. */ 1090170808Sdelphij if (dnode->tn_flags & APPEND 1091170808Sdelphij || node->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) { 1092170808Sdelphij error = EPERM; 1093170808Sdelphij goto out; 1094170808Sdelphij } 1095170808Sdelphij 1096197953Sdelphij 1097170808Sdelphij /* Detach the directory entry from the directory (dnode). */ 1098170808Sdelphij tmpfs_dir_detach(dvp, de); 1099211598Sed if (v->a_cnp->cn_flags & DOWHITEOUT) 1100211598Sed tmpfs_dir_whiteout_add(dvp, v->a_cnp); 1101170808Sdelphij 1102197953Sdelphij /* No vnode should be allocated for this entry from this point */ 1103197953Sdelphij TMPFS_NODE_LOCK(node); 1104197953Sdelphij TMPFS_ASSERT_ELOCKED(node); 1105170808Sdelphij node->tn_links--; 1106197953Sdelphij node->tn_dir.tn_parent = NULL; 1107170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED | TMPFS_NODE_CHANGED | \ 1108170808Sdelphij TMPFS_NODE_MODIFIED; 1109197953Sdelphij 1110197953Sdelphij TMPFS_NODE_UNLOCK(node); 1111197953Sdelphij 1112197953Sdelphij TMPFS_NODE_LOCK(dnode); 1113197953Sdelphij TMPFS_ASSERT_ELOCKED(dnode); 1114197953Sdelphij dnode->tn_links--; 1115197953Sdelphij dnode->tn_status |= TMPFS_NODE_ACCESSED | \ 1116170808Sdelphij TMPFS_NODE_CHANGED | TMPFS_NODE_MODIFIED; 1117197953Sdelphij TMPFS_NODE_UNLOCK(dnode); 1118170808Sdelphij 1119171070Sdelphij cache_purge(dvp); 1120170808Sdelphij cache_purge(vp); 1121170808Sdelphij 1122170808Sdelphij /* Free the directory entry we just deleted. Note that the node 1123170808Sdelphij * referred by it will not be removed until the vnode is really 1124170808Sdelphij * reclaimed. */ 1125245115Sgleb tmpfs_free_dirent(tmp, de); 1126170808Sdelphij 1127170808Sdelphij /* Release the deleted vnode (will destroy the node, notify 1128170808Sdelphij * interested parties and clean it from the cache). */ 1129170808Sdelphij 1130170808Sdelphij dnode->tn_status |= TMPFS_NODE_CHANGED; 1131170808Sdelphij tmpfs_update(dvp); 1132170808Sdelphij 1133170808Sdelphij error = 0; 1134170808Sdelphij 1135170808Sdelphijout: 1136170808Sdelphij return error; 1137170808Sdelphij} 1138170808Sdelphij 1139171069Sdelphijstatic int 1140170808Sdelphijtmpfs_symlink(struct vop_symlink_args *v) 1141170808Sdelphij{ 1142170808Sdelphij struct vnode *dvp = v->a_dvp; 1143170808Sdelphij struct vnode **vpp = v->a_vpp; 1144170808Sdelphij struct componentname *cnp = v->a_cnp; 1145170808Sdelphij struct vattr *vap = v->a_vap; 1146170808Sdelphij char *target = v->a_target; 1147170808Sdelphij 1148170808Sdelphij#ifdef notyet /* XXX FreeBSD BUG: kern_symlink is not setting VLNK */ 1149170808Sdelphij MPASS(vap->va_type == VLNK); 1150170808Sdelphij#else 1151170808Sdelphij vap->va_type = VLNK; 1152170808Sdelphij#endif 1153170808Sdelphij 1154170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, target); 1155170808Sdelphij} 1156170808Sdelphij 1157171069Sdelphijstatic int 1158170808Sdelphijtmpfs_readdir(struct vop_readdir_args *v) 1159170808Sdelphij{ 1160170808Sdelphij struct vnode *vp = v->a_vp; 1161170808Sdelphij struct uio *uio = v->a_uio; 1162170808Sdelphij int *eofflag = v->a_eofflag; 1163170808Sdelphij u_long **cookies = v->a_cookies; 1164170808Sdelphij int *ncookies = v->a_ncookies; 1165170808Sdelphij 1166170808Sdelphij int error; 1167245115Sgleb ssize_t startresid; 1168263946Sbdrewery int maxcookies; 1169170808Sdelphij struct tmpfs_node *node; 1170170808Sdelphij 1171170808Sdelphij /* This operation only makes sense on directory nodes. */ 1172171802Sdelphij if (vp->v_type != VDIR) 1173171802Sdelphij return ENOTDIR; 1174170808Sdelphij 1175263946Sbdrewery maxcookies = 0; 1176170808Sdelphij node = VP_TO_TMPFS_DIR(vp); 1177170808Sdelphij 1178245115Sgleb startresid = uio->uio_resid; 1179170808Sdelphij 1180263946Sbdrewery /* Allocate cookies for NFS and compat modules. */ 1181245115Sgleb if (cookies != NULL && ncookies != NULL) { 1182263946Sbdrewery maxcookies = howmany(node->tn_size, 1183263946Sbdrewery sizeof(struct tmpfs_dirent)) + 2; 1184263946Sbdrewery *cookies = malloc(maxcookies * sizeof(**cookies), M_TEMP, 1185263946Sbdrewery M_WAITOK); 1186245115Sgleb *ncookies = 0; 1187171862Sdelphij } 1188171862Sdelphij 1189263946Sbdrewery if (cookies == NULL) 1190245115Sgleb error = tmpfs_dir_getdents(node, uio, 0, NULL, NULL); 1191245115Sgleb else 1192263946Sbdrewery error = tmpfs_dir_getdents(node, uio, maxcookies, *cookies, 1193263946Sbdrewery ncookies); 1194170808Sdelphij 1195263946Sbdrewery /* Buffer was filled without hitting EOF. */ 1196245115Sgleb if (error == EJUSTRETURN) 1197245115Sgleb error = (uio->uio_resid != startresid) ? 0 : EINVAL; 1198171862Sdelphij 1199263946Sbdrewery if (error != 0 && cookies != NULL) 1200245115Sgleb free(*cookies, M_TEMP); 1201171862Sdelphij 1202170808Sdelphij if (eofflag != NULL) 1203170808Sdelphij *eofflag = 1204170808Sdelphij (error == 0 && uio->uio_offset == TMPFS_DIRCOOKIE_EOF); 1205170808Sdelphij 1206170808Sdelphij return error; 1207170808Sdelphij} 1208170808Sdelphij 1209171069Sdelphijstatic int 1210170808Sdelphijtmpfs_readlink(struct vop_readlink_args *v) 1211170808Sdelphij{ 1212170808Sdelphij struct vnode *vp = v->a_vp; 1213170808Sdelphij struct uio *uio = v->a_uio; 1214170808Sdelphij 1215170808Sdelphij int error; 1216170808Sdelphij struct tmpfs_node *node; 1217170808Sdelphij 1218170808Sdelphij MPASS(uio->uio_offset == 0); 1219170808Sdelphij MPASS(vp->v_type == VLNK); 1220170808Sdelphij 1221170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1222170808Sdelphij 1223170808Sdelphij error = uiomove(node->tn_link, MIN(node->tn_size, uio->uio_resid), 1224170808Sdelphij uio); 1225170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED; 1226170808Sdelphij 1227170808Sdelphij return error; 1228170808Sdelphij} 1229170808Sdelphij 1230171069Sdelphijstatic int 1231170808Sdelphijtmpfs_inactive(struct vop_inactive_args *v) 1232170808Sdelphij{ 1233170808Sdelphij struct vnode *vp = v->a_vp; 1234170808Sdelphij 1235170808Sdelphij struct tmpfs_node *node; 1236170808Sdelphij 1237170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1238170808Sdelphij 1239170808Sdelphij if (node->tn_links == 0) 1240234607Strasz vrecycle(vp); 1241170808Sdelphij 1242170808Sdelphij return 0; 1243170808Sdelphij} 1244170808Sdelphij 1245170808Sdelphijint 1246170808Sdelphijtmpfs_reclaim(struct vop_reclaim_args *v) 1247170808Sdelphij{ 1248170808Sdelphij struct vnode *vp = v->a_vp; 1249170808Sdelphij 1250170808Sdelphij struct tmpfs_mount *tmp; 1251170808Sdelphij struct tmpfs_node *node; 1252170808Sdelphij 1253170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1254170808Sdelphij tmp = VFS_TO_TMPFS(vp->v_mount); 1255171070Sdelphij 1256250189Skib if (vp->v_type == VREG) 1257250189Skib tmpfs_destroy_vobject(vp, node->tn_reg.tn_aobj); 1258250190Skib else 1259250190Skib vnode_destroy_vobject(vp); 1260250030Skib vp->v_object = NULL; 1261170808Sdelphij cache_purge(vp); 1262197953Sdelphij 1263197953Sdelphij TMPFS_NODE_LOCK(node); 1264197953Sdelphij TMPFS_ASSERT_ELOCKED(node); 1265170808Sdelphij tmpfs_free_vp(vp); 1266170808Sdelphij 1267170808Sdelphij /* If the node referenced by this vnode was deleted by the user, 1268170808Sdelphij * we must free its associated data structures (now that the vnode 1269170808Sdelphij * is being reclaimed). */ 1270197953Sdelphij if (node->tn_links == 0 && 1271197953Sdelphij (node->tn_vpstate & TMPFS_VNODE_ALLOCATING) == 0) { 1272197953Sdelphij node->tn_vpstate = TMPFS_VNODE_DOOMED; 1273197953Sdelphij TMPFS_NODE_UNLOCK(node); 1274170808Sdelphij tmpfs_free_node(tmp, node); 1275197953Sdelphij } else 1276197953Sdelphij TMPFS_NODE_UNLOCK(node); 1277170808Sdelphij 1278170808Sdelphij MPASS(vp->v_data == NULL); 1279170808Sdelphij return 0; 1280170808Sdelphij} 1281170808Sdelphij 1282171069Sdelphijstatic int 1283170808Sdelphijtmpfs_print(struct vop_print_args *v) 1284170808Sdelphij{ 1285170808Sdelphij struct vnode *vp = v->a_vp; 1286170808Sdelphij 1287170808Sdelphij struct tmpfs_node *node; 1288170808Sdelphij 1289170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1290170808Sdelphij 1291248610Spjd printf("tag VT_TMPFS, tmpfs_node %p, flags 0x%lx, links %d\n", 1292170808Sdelphij node, node->tn_flags, node->tn_links); 1293231669Stijl printf("\tmode 0%o, owner %d, group %d, size %jd, status 0x%x\n", 1294170808Sdelphij node->tn_mode, node->tn_uid, node->tn_gid, 1295231669Stijl (intmax_t)node->tn_size, node->tn_status); 1296170808Sdelphij 1297170808Sdelphij if (vp->v_type == VFIFO) 1298170808Sdelphij fifo_printinfo(vp); 1299170808Sdelphij 1300170808Sdelphij printf("\n"); 1301170808Sdelphij 1302170808Sdelphij return 0; 1303170808Sdelphij} 1304170808Sdelphij 1305171069Sdelphijstatic int 1306170808Sdelphijtmpfs_pathconf(struct vop_pathconf_args *v) 1307170808Sdelphij{ 1308170808Sdelphij int name = v->a_name; 1309170808Sdelphij register_t *retval = v->a_retval; 1310170808Sdelphij 1311170808Sdelphij int error; 1312170808Sdelphij 1313170808Sdelphij error = 0; 1314170808Sdelphij 1315170808Sdelphij switch (name) { 1316170808Sdelphij case _PC_LINK_MAX: 1317170808Sdelphij *retval = LINK_MAX; 1318170808Sdelphij break; 1319170808Sdelphij 1320170808Sdelphij case _PC_NAME_MAX: 1321170808Sdelphij *retval = NAME_MAX; 1322170808Sdelphij break; 1323170808Sdelphij 1324170808Sdelphij case _PC_PATH_MAX: 1325170808Sdelphij *retval = PATH_MAX; 1326170808Sdelphij break; 1327170808Sdelphij 1328170808Sdelphij case _PC_PIPE_BUF: 1329170808Sdelphij *retval = PIPE_BUF; 1330170808Sdelphij break; 1331170808Sdelphij 1332170808Sdelphij case _PC_CHOWN_RESTRICTED: 1333170808Sdelphij *retval = 1; 1334170808Sdelphij break; 1335170808Sdelphij 1336170808Sdelphij case _PC_NO_TRUNC: 1337170808Sdelphij *retval = 1; 1338170808Sdelphij break; 1339170808Sdelphij 1340170808Sdelphij case _PC_SYNC_IO: 1341170808Sdelphij *retval = 1; 1342170808Sdelphij break; 1343170808Sdelphij 1344170808Sdelphij case _PC_FILESIZEBITS: 1345170808Sdelphij *retval = 0; /* XXX Don't know which value should I return. */ 1346170808Sdelphij break; 1347170808Sdelphij 1348170808Sdelphij default: 1349170808Sdelphij error = EINVAL; 1350170808Sdelphij } 1351170808Sdelphij 1352170808Sdelphij return error; 1353170808Sdelphij} 1354170808Sdelphij 1355171069Sdelphijstatic int 1356170808Sdelphijtmpfs_vptofh(struct vop_vptofh_args *ap) 1357170808Sdelphij{ 1358170808Sdelphij struct tmpfs_fid *tfhp; 1359170808Sdelphij struct tmpfs_node *node; 1360170808Sdelphij 1361170808Sdelphij tfhp = (struct tmpfs_fid *)ap->a_fhp; 1362170808Sdelphij node = VP_TO_TMPFS_NODE(ap->a_vp); 1363170808Sdelphij 1364170808Sdelphij tfhp->tf_len = sizeof(struct tmpfs_fid); 1365170808Sdelphij tfhp->tf_id = node->tn_id; 1366170808Sdelphij tfhp->tf_gen = node->tn_gen; 1367171070Sdelphij 1368170808Sdelphij return (0); 1369170808Sdelphij} 1370171069Sdelphij 1371211598Sedstatic int 1372211598Sedtmpfs_whiteout(struct vop_whiteout_args *ap) 1373211598Sed{ 1374211598Sed struct vnode *dvp = ap->a_dvp; 1375211598Sed struct componentname *cnp = ap->a_cnp; 1376211598Sed struct tmpfs_dirent *de; 1377211598Sed 1378211598Sed switch (ap->a_flags) { 1379211598Sed case LOOKUP: 1380211598Sed return (0); 1381211598Sed case CREATE: 1382211598Sed de = tmpfs_dir_lookup(VP_TO_TMPFS_DIR(dvp), NULL, cnp); 1383211598Sed if (de != NULL) 1384211598Sed return (de->td_node == NULL ? 0 : EEXIST); 1385211598Sed return (tmpfs_dir_whiteout_add(dvp, cnp)); 1386211598Sed case DELETE: 1387211598Sed tmpfs_dir_whiteout_remove(dvp, cnp); 1388211598Sed return (0); 1389211598Sed default: 1390211598Sed panic("tmpfs_whiteout: unknown op"); 1391211598Sed } 1392211598Sed} 1393211598Sed 1394171069Sdelphij/* 1395171069Sdelphij * vnode operations vector used for files stored in a tmpfs file system. 1396171069Sdelphij */ 1397171069Sdelphijstruct vop_vector tmpfs_vnodeop_entries = { 1398171069Sdelphij .vop_default = &default_vnodeops, 1399171069Sdelphij .vop_lookup = vfs_cache_lookup, 1400171069Sdelphij .vop_cachedlookup = tmpfs_lookup, 1401171069Sdelphij .vop_create = tmpfs_create, 1402171069Sdelphij .vop_mknod = tmpfs_mknod, 1403171069Sdelphij .vop_open = tmpfs_open, 1404171069Sdelphij .vop_close = tmpfs_close, 1405171069Sdelphij .vop_access = tmpfs_access, 1406171069Sdelphij .vop_getattr = tmpfs_getattr, 1407171069Sdelphij .vop_setattr = tmpfs_setattr, 1408171069Sdelphij .vop_read = tmpfs_read, 1409171069Sdelphij .vop_write = tmpfs_write, 1410171069Sdelphij .vop_fsync = tmpfs_fsync, 1411171069Sdelphij .vop_remove = tmpfs_remove, 1412171069Sdelphij .vop_link = tmpfs_link, 1413171069Sdelphij .vop_rename = tmpfs_rename, 1414171069Sdelphij .vop_mkdir = tmpfs_mkdir, 1415171069Sdelphij .vop_rmdir = tmpfs_rmdir, 1416171069Sdelphij .vop_symlink = tmpfs_symlink, 1417171069Sdelphij .vop_readdir = tmpfs_readdir, 1418171069Sdelphij .vop_readlink = tmpfs_readlink, 1419171069Sdelphij .vop_inactive = tmpfs_inactive, 1420171069Sdelphij .vop_reclaim = tmpfs_reclaim, 1421171069Sdelphij .vop_print = tmpfs_print, 1422171069Sdelphij .vop_pathconf = tmpfs_pathconf, 1423171069Sdelphij .vop_vptofh = tmpfs_vptofh, 1424211598Sed .vop_whiteout = tmpfs_whiteout, 1425171069Sdelphij .vop_bmap = VOP_EOPNOTSUPP, 1426171069Sdelphij}; 1427171069Sdelphij 1428