tmpfs_vnops.c revision 188929
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: head/sys/fs/tmpfs/tmpfs_vnops.c 188929 2009-02-22 19:50:09Z alc $"); 38170808Sdelphij 39170808Sdelphij#include <sys/param.h> 40170808Sdelphij#include <sys/fcntl.h> 41170808Sdelphij#include <sys/lockf.h> 42170808Sdelphij#include <sys/namei.h> 43170808Sdelphij#include <sys/priv.h> 44170808Sdelphij#include <sys/proc.h> 45170808Sdelphij#include <sys/resourcevar.h> 46170808Sdelphij#include <sys/stat.h> 47170808Sdelphij#include <sys/systm.h> 48170808Sdelphij#include <sys/unistd.h> 49170808Sdelphij#include <sys/vnode.h> 50170808Sdelphij 51170808Sdelphij#include <vm/vm.h> 52170808Sdelphij#include <vm/vm_object.h> 53170808Sdelphij#include <vm/vm_page.h> 54170808Sdelphij#include <vm/vm_pager.h> 55188929Salc 56170808Sdelphij#include <machine/_inttypes.h> 57170808Sdelphij 58170808Sdelphij#include <fs/fifofs/fifo.h> 59170808Sdelphij#include <fs/tmpfs/tmpfs_vnops.h> 60170808Sdelphij#include <fs/tmpfs/tmpfs.h> 61170808Sdelphij 62170808Sdelphij/* --------------------------------------------------------------------- */ 63170808Sdelphij 64171069Sdelphijstatic int 65170808Sdelphijtmpfs_lookup(struct vop_cachedlookup_args *v) 66170808Sdelphij{ 67170808Sdelphij struct vnode *dvp = v->a_dvp; 68170808Sdelphij struct vnode **vpp = v->a_vpp; 69170808Sdelphij struct componentname *cnp = v->a_cnp; 70170808Sdelphij struct thread *td = cnp->cn_thread; 71170808Sdelphij 72170808Sdelphij int error; 73170808Sdelphij struct tmpfs_dirent *de; 74170808Sdelphij struct tmpfs_node *dnode; 75170808Sdelphij 76170808Sdelphij dnode = VP_TO_TMPFS_DIR(dvp); 77170808Sdelphij *vpp = NULLVP; 78170808Sdelphij 79170808Sdelphij /* Check accessibility of requested node as a first step. */ 80170808Sdelphij error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, td); 81170808Sdelphij if (error != 0) 82170808Sdelphij goto out; 83170808Sdelphij 84170808Sdelphij /* We cannot be requesting the parent directory of the root node. */ 85170808Sdelphij MPASS(IMPLIES(dnode->tn_type == VDIR && 86170808Sdelphij dnode->tn_dir.tn_parent == dnode, 87170808Sdelphij !(cnp->cn_flags & ISDOTDOT))); 88170808Sdelphij 89170808Sdelphij if (cnp->cn_flags & ISDOTDOT) { 90171799Sdelphij int ltype = 0; 91171799Sdelphij 92176559Sattilio ltype = VOP_ISLOCKED(dvp); 93171802Sdelphij vhold(dvp); 94175294Sattilio VOP_UNLOCK(dvp, 0); 95170808Sdelphij /* Allocate a new vnode on the matching entry. */ 96171799Sdelphij error = tmpfs_alloc_vp(dvp->v_mount, dnode->tn_dir.tn_parent, 97171799Sdelphij cnp->cn_lkflags, vpp, td); 98170808Sdelphij 99175202Sattilio vn_lock(dvp, ltype | LK_RETRY); 100171802Sdelphij vdrop(dvp); 101170808Sdelphij } else if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 102170808Sdelphij VREF(dvp); 103170808Sdelphij *vpp = dvp; 104170808Sdelphij error = 0; 105170808Sdelphij } else { 106188318Skib de = tmpfs_dir_lookup(dnode, NULL, cnp); 107170808Sdelphij if (de == NULL) { 108170808Sdelphij /* The entry was not found in the directory. 109170808Sdelphij * This is OK if we are creating or renaming an 110170808Sdelphij * entry and are working on the last component of 111170808Sdelphij * the path name. */ 112170808Sdelphij if ((cnp->cn_flags & ISLASTCN) && 113170808Sdelphij (cnp->cn_nameiop == CREATE || \ 114170808Sdelphij cnp->cn_nameiop == RENAME)) { 115170808Sdelphij error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, 116170808Sdelphij cnp->cn_thread); 117170808Sdelphij if (error != 0) 118170808Sdelphij goto out; 119170808Sdelphij 120170808Sdelphij /* Keep the component name in the buffer for 121170808Sdelphij * future uses. */ 122170808Sdelphij cnp->cn_flags |= SAVENAME; 123170808Sdelphij 124170808Sdelphij error = EJUSTRETURN; 125170808Sdelphij } else 126170808Sdelphij error = ENOENT; 127170808Sdelphij } else { 128170808Sdelphij struct tmpfs_node *tnode; 129170808Sdelphij 130170808Sdelphij /* The entry was found, so get its associated 131170808Sdelphij * tmpfs_node. */ 132170808Sdelphij tnode = de->td_node; 133170808Sdelphij 134170808Sdelphij /* If we are not at the last path component and 135170808Sdelphij * found a non-directory or non-link entry (which 136170808Sdelphij * may itself be pointing to a directory), raise 137170808Sdelphij * an error. */ 138170808Sdelphij if ((tnode->tn_type != VDIR && 139170808Sdelphij tnode->tn_type != VLNK) && 140170808Sdelphij !(cnp->cn_flags & ISLASTCN)) { 141170808Sdelphij error = ENOTDIR; 142170808Sdelphij goto out; 143170808Sdelphij } 144170808Sdelphij 145170808Sdelphij /* If we are deleting or renaming the entry, keep 146170808Sdelphij * track of its tmpfs_dirent so that it can be 147170808Sdelphij * easily deleted later. */ 148170808Sdelphij if ((cnp->cn_flags & ISLASTCN) && 149170808Sdelphij (cnp->cn_nameiop == DELETE || 150170808Sdelphij cnp->cn_nameiop == RENAME)) { 151170808Sdelphij error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, 152170808Sdelphij cnp->cn_thread); 153170808Sdelphij if (error != 0) 154170808Sdelphij goto out; 155171070Sdelphij 156170808Sdelphij /* Allocate a new vnode on the matching entry. */ 157171799Sdelphij error = tmpfs_alloc_vp(dvp->v_mount, tnode, 158171799Sdelphij cnp->cn_lkflags, vpp, td); 159170808Sdelphij if (error != 0) 160170808Sdelphij goto out; 161170808Sdelphij 162170808Sdelphij if ((dnode->tn_mode & S_ISTXT) && 163170808Sdelphij VOP_ACCESS(dvp, VADMIN, cnp->cn_cred, cnp->cn_thread) && 164170808Sdelphij VOP_ACCESS(*vpp, VADMIN, cnp->cn_cred, cnp->cn_thread)) { 165170808Sdelphij error = EPERM; 166170808Sdelphij vput(*vpp); 167170808Sdelphij *vpp = NULL; 168170808Sdelphij goto out; 169171070Sdelphij } 170170808Sdelphij cnp->cn_flags |= SAVENAME; 171171799Sdelphij } else { 172171799Sdelphij error = tmpfs_alloc_vp(dvp->v_mount, tnode, 173171799Sdelphij cnp->cn_lkflags, vpp, td); 174170808Sdelphij } 175170808Sdelphij } 176170808Sdelphij } 177170808Sdelphij 178170808Sdelphij /* Store the result of this lookup in the cache. Avoid this if the 179170808Sdelphij * request was for creation, as it does not improve timings on 180170808Sdelphij * emprical tests. */ 181170808Sdelphij if ((cnp->cn_flags & MAKEENTRY) && cnp->cn_nameiop != CREATE) 182170808Sdelphij cache_enter(dvp, *vpp, cnp); 183170808Sdelphij 184170808Sdelphijout: 185170808Sdelphij /* If there were no errors, *vpp cannot be null and it must be 186170808Sdelphij * locked. */ 187176559Sattilio MPASS(IFF(error == 0, *vpp != NULLVP && VOP_ISLOCKED(*vpp))); 188170808Sdelphij 189170808Sdelphij return error; 190170808Sdelphij} 191170808Sdelphij 192170808Sdelphij/* --------------------------------------------------------------------- */ 193170808Sdelphij 194171069Sdelphijstatic int 195170808Sdelphijtmpfs_create(struct vop_create_args *v) 196170808Sdelphij{ 197170808Sdelphij struct vnode *dvp = v->a_dvp; 198170808Sdelphij struct vnode **vpp = v->a_vpp; 199170808Sdelphij struct componentname *cnp = v->a_cnp; 200170808Sdelphij struct vattr *vap = v->a_vap; 201170808Sdelphij 202170808Sdelphij MPASS(vap->va_type == VREG || vap->va_type == VSOCK); 203170808Sdelphij 204170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL); 205170808Sdelphij} 206170808Sdelphij/* --------------------------------------------------------------------- */ 207170808Sdelphij 208171069Sdelphijstatic int 209170808Sdelphijtmpfs_mknod(struct vop_mknod_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 if (vap->va_type != VBLK && vap->va_type != VCHR && 217170808Sdelphij vap->va_type != VFIFO) 218170808Sdelphij return EINVAL; 219170808Sdelphij 220170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL); 221170808Sdelphij} 222170808Sdelphij 223170808Sdelphij/* --------------------------------------------------------------------- */ 224170808Sdelphij 225171069Sdelphijstatic int 226170808Sdelphijtmpfs_open(struct vop_open_args *v) 227170808Sdelphij{ 228170808Sdelphij struct vnode *vp = v->a_vp; 229170808Sdelphij int mode = v->a_mode; 230170808Sdelphij 231170808Sdelphij int error; 232170808Sdelphij struct tmpfs_node *node; 233170808Sdelphij 234176559Sattilio MPASS(VOP_ISLOCKED(vp)); 235170808Sdelphij 236170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 237171070Sdelphij 238170808Sdelphij /* The file is still active but all its names have been removed 239170808Sdelphij * (e.g. by a "rmdir $(pwd)"). It cannot be opened any more as 240170808Sdelphij * it is about to die. */ 241170808Sdelphij if (node->tn_links < 1) 242170808Sdelphij return (ENOENT); 243170808Sdelphij 244170808Sdelphij /* If the file is marked append-only, deny write requests. */ 245170808Sdelphij if (node->tn_flags & APPEND && (mode & (FWRITE | O_APPEND)) == FWRITE) 246170808Sdelphij error = EPERM; 247170808Sdelphij else { 248170808Sdelphij error = 0; 249171070Sdelphij vnode_create_vobject(vp, node->tn_size, v->a_td); 250170808Sdelphij } 251170808Sdelphij 252176559Sattilio MPASS(VOP_ISLOCKED(vp)); 253170808Sdelphij return error; 254170808Sdelphij} 255170808Sdelphij 256170808Sdelphij/* --------------------------------------------------------------------- */ 257170808Sdelphij 258171069Sdelphijstatic int 259170808Sdelphijtmpfs_close(struct vop_close_args *v) 260170808Sdelphij{ 261170808Sdelphij struct vnode *vp = v->a_vp; 262170808Sdelphij 263170808Sdelphij struct tmpfs_node *node; 264170808Sdelphij 265176559Sattilio MPASS(VOP_ISLOCKED(vp)); 266170808Sdelphij 267170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 268170808Sdelphij 269170808Sdelphij if (node->tn_links > 0) { 270170808Sdelphij /* Update node times. No need to do it if the node has 271170808Sdelphij * been deleted, because it will vanish after we return. */ 272170808Sdelphij tmpfs_update(vp); 273170808Sdelphij } 274170808Sdelphij 275170808Sdelphij return 0; 276170808Sdelphij} 277170808Sdelphij 278170808Sdelphij/* --------------------------------------------------------------------- */ 279170808Sdelphij 280170808Sdelphijint 281170808Sdelphijtmpfs_access(struct vop_access_args *v) 282170808Sdelphij{ 283170808Sdelphij struct vnode *vp = v->a_vp; 284184413Strasz accmode_t accmode = v->a_accmode; 285170808Sdelphij struct ucred *cred = v->a_cred; 286170808Sdelphij 287170808Sdelphij int error; 288170808Sdelphij struct tmpfs_node *node; 289170808Sdelphij 290176559Sattilio MPASS(VOP_ISLOCKED(vp)); 291170808Sdelphij 292170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 293170808Sdelphij 294170808Sdelphij switch (vp->v_type) { 295170808Sdelphij case VDIR: 296170808Sdelphij /* FALLTHROUGH */ 297170808Sdelphij case VLNK: 298170808Sdelphij /* FALLTHROUGH */ 299170808Sdelphij case VREG: 300184413Strasz if (accmode & VWRITE && vp->v_mount->mnt_flag & MNT_RDONLY) { 301170808Sdelphij error = EROFS; 302170808Sdelphij goto out; 303170808Sdelphij } 304170808Sdelphij break; 305170808Sdelphij 306170808Sdelphij case VBLK: 307170808Sdelphij /* FALLTHROUGH */ 308170808Sdelphij case VCHR: 309170808Sdelphij /* FALLTHROUGH */ 310170808Sdelphij case VSOCK: 311170808Sdelphij /* FALLTHROUGH */ 312170808Sdelphij case VFIFO: 313170808Sdelphij break; 314170808Sdelphij 315170808Sdelphij default: 316170808Sdelphij error = EINVAL; 317170808Sdelphij goto out; 318170808Sdelphij } 319170808Sdelphij 320184413Strasz if (accmode & VWRITE && node->tn_flags & IMMUTABLE) { 321170808Sdelphij error = EPERM; 322170808Sdelphij goto out; 323170808Sdelphij } 324170808Sdelphij 325170808Sdelphij error = vaccess(vp->v_type, node->tn_mode, node->tn_uid, 326184413Strasz node->tn_gid, accmode, cred, NULL); 327170808Sdelphij 328170808Sdelphijout: 329176559Sattilio MPASS(VOP_ISLOCKED(vp)); 330170808Sdelphij 331170808Sdelphij return error; 332170808Sdelphij} 333170808Sdelphij 334170808Sdelphij/* --------------------------------------------------------------------- */ 335170808Sdelphij 336170808Sdelphijint 337170808Sdelphijtmpfs_getattr(struct vop_getattr_args *v) 338170808Sdelphij{ 339170808Sdelphij struct vnode *vp = v->a_vp; 340170808Sdelphij struct vattr *vap = v->a_vap; 341170808Sdelphij 342170808Sdelphij struct tmpfs_node *node; 343170808Sdelphij 344170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 345170808Sdelphij 346170808Sdelphij tmpfs_update(vp); 347170808Sdelphij 348170808Sdelphij vap->va_type = vp->v_type; 349170808Sdelphij vap->va_mode = node->tn_mode; 350170808Sdelphij vap->va_nlink = node->tn_links; 351170808Sdelphij vap->va_uid = node->tn_uid; 352170808Sdelphij vap->va_gid = node->tn_gid; 353170808Sdelphij vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 354170808Sdelphij vap->va_fileid = node->tn_id; 355170808Sdelphij vap->va_size = node->tn_size; 356170808Sdelphij vap->va_blocksize = PAGE_SIZE; 357170808Sdelphij vap->va_atime = node->tn_atime; 358170808Sdelphij vap->va_mtime = node->tn_mtime; 359170808Sdelphij vap->va_ctime = node->tn_ctime; 360170808Sdelphij vap->va_birthtime = node->tn_birthtime; 361170808Sdelphij vap->va_gen = node->tn_gen; 362170808Sdelphij vap->va_flags = node->tn_flags; 363170808Sdelphij vap->va_rdev = (vp->v_type == VBLK || vp->v_type == VCHR) ? 364183214Skib node->tn_rdev : NODEV; 365170808Sdelphij vap->va_bytes = round_page(node->tn_size); 366183212Skib vap->va_filerev = 0; 367170808Sdelphij 368170808Sdelphij return 0; 369170808Sdelphij} 370170808Sdelphij 371170808Sdelphij/* --------------------------------------------------------------------- */ 372170808Sdelphij 373170808Sdelphij/* XXX Should this operation be atomic? I think it should, but code in 374170808Sdelphij * XXX other places (e.g., ufs) doesn't seem to be... */ 375170808Sdelphijint 376170808Sdelphijtmpfs_setattr(struct vop_setattr_args *v) 377170808Sdelphij{ 378170808Sdelphij struct vnode *vp = v->a_vp; 379170808Sdelphij struct vattr *vap = v->a_vap; 380170808Sdelphij struct ucred *cred = v->a_cred; 381182371Sattilio struct thread *td = curthread; 382170808Sdelphij 383170808Sdelphij int error; 384170808Sdelphij 385176559Sattilio MPASS(VOP_ISLOCKED(vp)); 386170808Sdelphij 387170808Sdelphij error = 0; 388170808Sdelphij 389170808Sdelphij /* Abort if any unsettable attribute is given. */ 390170808Sdelphij if (vap->va_type != VNON || 391170808Sdelphij vap->va_nlink != VNOVAL || 392170808Sdelphij vap->va_fsid != VNOVAL || 393170808Sdelphij vap->va_fileid != VNOVAL || 394170808Sdelphij vap->va_blocksize != VNOVAL || 395170808Sdelphij vap->va_gen != VNOVAL || 396170808Sdelphij vap->va_rdev != VNOVAL || 397170808Sdelphij vap->va_bytes != VNOVAL) 398170808Sdelphij error = EINVAL; 399170808Sdelphij 400170808Sdelphij if (error == 0 && (vap->va_flags != VNOVAL)) 401182371Sattilio error = tmpfs_chflags(vp, vap->va_flags, cred, td); 402170808Sdelphij 403170808Sdelphij if (error == 0 && (vap->va_size != VNOVAL)) 404182371Sattilio error = tmpfs_chsize(vp, vap->va_size, cred, td); 405170808Sdelphij 406170808Sdelphij if (error == 0 && (vap->va_uid != VNOVAL || vap->va_gid != VNOVAL)) 407182371Sattilio error = tmpfs_chown(vp, vap->va_uid, vap->va_gid, cred, td); 408170808Sdelphij 409170808Sdelphij if (error == 0 && (vap->va_mode != (mode_t)VNOVAL)) 410182371Sattilio error = tmpfs_chmod(vp, vap->va_mode, cred, td); 411170808Sdelphij 412170808Sdelphij if (error == 0 && ((vap->va_atime.tv_sec != VNOVAL && 413170808Sdelphij vap->va_atime.tv_nsec != VNOVAL) || 414170808Sdelphij (vap->va_mtime.tv_sec != VNOVAL && 415170808Sdelphij vap->va_mtime.tv_nsec != VNOVAL) || 416170808Sdelphij (vap->va_birthtime.tv_sec != VNOVAL && 417170808Sdelphij vap->va_birthtime.tv_nsec != VNOVAL))) 418171070Sdelphij error = tmpfs_chtimes(vp, &vap->va_atime, &vap->va_mtime, 419182371Sattilio &vap->va_birthtime, vap->va_vaflags, cred, td); 420170808Sdelphij 421170808Sdelphij /* Update the node times. We give preference to the error codes 422170808Sdelphij * generated by this function rather than the ones that may arise 423170808Sdelphij * from tmpfs_update. */ 424170808Sdelphij tmpfs_update(vp); 425170808Sdelphij 426176559Sattilio MPASS(VOP_ISLOCKED(vp)); 427170808Sdelphij 428170808Sdelphij return error; 429170808Sdelphij} 430170808Sdelphij 431170808Sdelphij/* --------------------------------------------------------------------- */ 432171489Sdelphij 433170808Sdelphijstatic int 434171489Sdelphijtmpfs_mappedread(vm_object_t vobj, vm_object_t tobj, size_t len, struct uio *uio) 435170808Sdelphij{ 436171489Sdelphij vm_pindex_t idx; 437171489Sdelphij vm_page_t m; 438188929Salc vm_offset_t offset; 439188929Salc off_t addr; 440171489Sdelphij size_t tlen; 441171489Sdelphij int error; 442170808Sdelphij 443171489Sdelphij addr = uio->uio_offset; 444171489Sdelphij idx = OFF_TO_IDX(addr); 445171489Sdelphij offset = addr & PAGE_MASK; 446171489Sdelphij tlen = MIN(PAGE_SIZE - offset, len); 447170808Sdelphij 448171489Sdelphij if ((vobj == NULL) || (vobj->resident_page_count == 0)) 449171489Sdelphij goto nocache; 450170808Sdelphij 451171489Sdelphij VM_OBJECT_LOCK(vobj); 452171489Sdelphijlookupvpg: 453171489Sdelphij if (((m = vm_page_lookup(vobj, idx)) != NULL) && 454171489Sdelphij vm_page_is_valid(m, offset, tlen)) { 455171489Sdelphij if (vm_page_sleep_if_busy(m, FALSE, "tmfsmr")) 456171489Sdelphij goto lookupvpg; 457171489Sdelphij vm_page_busy(m); 458171489Sdelphij VM_OBJECT_UNLOCK(vobj); 459188929Salc error = uiomove_fromphys(&m, offset, tlen, uio); 460171489Sdelphij VM_OBJECT_LOCK(vobj); 461171489Sdelphij vm_page_wakeup(m); 462171489Sdelphij VM_OBJECT_UNLOCK(vobj); 463171489Sdelphij return (error); 464171799Sdelphij } 465171489Sdelphij VM_OBJECT_UNLOCK(vobj); 466171489Sdelphijnocache: 467171489Sdelphij VM_OBJECT_LOCK(tobj); 468171489Sdelphij vm_object_pip_add(tobj, 1); 469171489Sdelphij m = vm_page_grab(tobj, idx, VM_ALLOC_WIRED | 470171489Sdelphij VM_ALLOC_ZERO | VM_ALLOC_NORMAL | VM_ALLOC_RETRY); 471171489Sdelphij if (m->valid != VM_PAGE_BITS_ALL) { 472171489Sdelphij int behind, ahead; 473171489Sdelphij if (vm_pager_has_page(tobj, idx, &behind, &ahead)) { 474171489Sdelphij error = vm_pager_get_pages(tobj, &m, 1, 0); 475171489Sdelphij if (error != 0) { 476171489Sdelphij printf("tmpfs get pages from pager error [read]\n"); 477171489Sdelphij goto out; 478171489Sdelphij } 479171489Sdelphij } else 480170808Sdelphij vm_page_zero_invalid(m, TRUE); 481170808Sdelphij } 482171489Sdelphij VM_OBJECT_UNLOCK(tobj); 483188929Salc error = uiomove_fromphys(&m, offset, tlen, uio); 484171489Sdelphij VM_OBJECT_LOCK(tobj); 485171308Sdelphijout: 486171489Sdelphij vm_page_lock_queues(); 487188921Salc vm_page_unwire(m, TRUE); 488171489Sdelphij vm_page_unlock_queues(); 489171489Sdelphij vm_page_wakeup(m); 490171489Sdelphij vm_object_pip_subtract(tobj, 1); 491171489Sdelphij VM_OBJECT_UNLOCK(tobj); 492171489Sdelphij 493171489Sdelphij return (error); 494170808Sdelphij} 495170808Sdelphij 496171069Sdelphijstatic int 497170808Sdelphijtmpfs_read(struct vop_read_args *v) 498170808Sdelphij{ 499170808Sdelphij struct vnode *vp = v->a_vp; 500170808Sdelphij struct uio *uio = v->a_uio; 501170808Sdelphij 502170808Sdelphij struct tmpfs_node *node; 503170808Sdelphij vm_object_t uobj; 504171489Sdelphij size_t len; 505171489Sdelphij int resid; 506170808Sdelphij 507174265Swkoszek int error = 0; 508170808Sdelphij 509170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 510170808Sdelphij 511170808Sdelphij if (vp->v_type != VREG) { 512170808Sdelphij error = EISDIR; 513170808Sdelphij goto out; 514170808Sdelphij } 515170808Sdelphij 516170808Sdelphij if (uio->uio_offset < 0) { 517170808Sdelphij error = EINVAL; 518170808Sdelphij goto out; 519170808Sdelphij } 520170808Sdelphij 521170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED; 522170808Sdelphij 523170808Sdelphij uobj = node->tn_reg.tn_aobj; 524171489Sdelphij while ((resid = uio->uio_resid) > 0) { 525171489Sdelphij error = 0; 526171489Sdelphij if (node->tn_size <= uio->uio_offset) 527171489Sdelphij break; 528171489Sdelphij len = MIN(node->tn_size - uio->uio_offset, resid); 529171489Sdelphij if (len == 0) 530171489Sdelphij break; 531171489Sdelphij error = tmpfs_mappedread(vp->v_object, uobj, len, uio); 532171489Sdelphij if ((error != 0) || (resid == uio->uio_resid)) 533171489Sdelphij break; 534171489Sdelphij } 535170808Sdelphij 536170808Sdelphijout: 537170808Sdelphij 538170808Sdelphij return error; 539170808Sdelphij} 540170808Sdelphij 541170808Sdelphij/* --------------------------------------------------------------------- */ 542170808Sdelphij 543171069Sdelphijstatic int 544171489Sdelphijtmpfs_mappedwrite(vm_object_t vobj, vm_object_t tobj, size_t len, struct uio *uio) 545171489Sdelphij{ 546171489Sdelphij vm_pindex_t idx; 547171489Sdelphij vm_page_t vpg, tpg; 548188929Salc vm_offset_t offset; 549188929Salc off_t addr; 550171489Sdelphij size_t tlen; 551171489Sdelphij int error; 552171489Sdelphij 553174265Swkoszek error = 0; 554174265Swkoszek 555171489Sdelphij addr = uio->uio_offset; 556171489Sdelphij idx = OFF_TO_IDX(addr); 557171489Sdelphij offset = addr & PAGE_MASK; 558171489Sdelphij tlen = MIN(PAGE_SIZE - offset, len); 559171489Sdelphij 560171489Sdelphij if ((vobj == NULL) || (vobj->resident_page_count == 0)) { 561171489Sdelphij vpg = NULL; 562171489Sdelphij goto nocache; 563171489Sdelphij } 564171489Sdelphij 565171489Sdelphij VM_OBJECT_LOCK(vobj); 566171489Sdelphijlookupvpg: 567171489Sdelphij if (((vpg = vm_page_lookup(vobj, idx)) != NULL) && 568171489Sdelphij vm_page_is_valid(vpg, offset, tlen)) { 569171489Sdelphij if (vm_page_sleep_if_busy(vpg, FALSE, "tmfsmw")) 570171489Sdelphij goto lookupvpg; 571171489Sdelphij vm_page_busy(vpg); 572171489Sdelphij vm_page_lock_queues(); 573171489Sdelphij vm_page_undirty(vpg); 574171489Sdelphij vm_page_unlock_queues(); 575171489Sdelphij VM_OBJECT_UNLOCK(vobj); 576188929Salc error = uiomove_fromphys(&vpg, offset, tlen, uio); 577171489Sdelphij } else { 578171489Sdelphij VM_OBJECT_UNLOCK(vobj); 579171489Sdelphij vpg = NULL; 580171489Sdelphij } 581171489Sdelphijnocache: 582171489Sdelphij VM_OBJECT_LOCK(tobj); 583171489Sdelphij vm_object_pip_add(tobj, 1); 584171489Sdelphij tpg = vm_page_grab(tobj, idx, VM_ALLOC_WIRED | 585171489Sdelphij VM_ALLOC_ZERO | VM_ALLOC_NORMAL | VM_ALLOC_RETRY); 586171489Sdelphij if (tpg->valid != VM_PAGE_BITS_ALL) { 587171489Sdelphij int behind, ahead; 588171489Sdelphij if (vm_pager_has_page(tobj, idx, &behind, &ahead)) { 589171489Sdelphij error = vm_pager_get_pages(tobj, &tpg, 1, 0); 590171489Sdelphij if (error != 0) { 591171489Sdelphij printf("tmpfs get pages from pager error [write]\n"); 592171489Sdelphij goto out; 593171489Sdelphij } 594171489Sdelphij } else 595171489Sdelphij vm_page_zero_invalid(tpg, TRUE); 596171489Sdelphij } 597171489Sdelphij VM_OBJECT_UNLOCK(tobj); 598188929Salc if (vpg == NULL) 599188929Salc error = uiomove_fromphys(&tpg, offset, tlen, uio); 600188929Salc else { 601171489Sdelphij KASSERT(vpg->valid == VM_PAGE_BITS_ALL, ("parts of vpg invalid")); 602171489Sdelphij pmap_copy_page(vpg, tpg); 603171489Sdelphij } 604171489Sdelphij VM_OBJECT_LOCK(tobj); 605171489Sdelphijout: 606171489Sdelphij if (vobj != NULL) 607171489Sdelphij VM_OBJECT_LOCK(vobj); 608171489Sdelphij vm_page_lock_queues(); 609171489Sdelphij if (error == 0) { 610171489Sdelphij vm_page_set_validclean(tpg, offset, tlen); 611171489Sdelphij vm_page_zero_invalid(tpg, TRUE); 612171489Sdelphij vm_page_dirty(tpg); 613171489Sdelphij } 614188921Salc vm_page_unwire(tpg, TRUE); 615171489Sdelphij vm_page_unlock_queues(); 616171489Sdelphij vm_page_wakeup(tpg); 617171489Sdelphij if (vpg != NULL) 618171489Sdelphij vm_page_wakeup(vpg); 619171489Sdelphij if (vobj != NULL) 620171489Sdelphij VM_OBJECT_UNLOCK(vobj); 621171489Sdelphij vm_object_pip_subtract(tobj, 1); 622171489Sdelphij VM_OBJECT_UNLOCK(tobj); 623171489Sdelphij 624171489Sdelphij return (error); 625171489Sdelphij} 626171489Sdelphij 627171489Sdelphijstatic int 628170808Sdelphijtmpfs_write(struct vop_write_args *v) 629170808Sdelphij{ 630170808Sdelphij struct vnode *vp = v->a_vp; 631170808Sdelphij struct uio *uio = v->a_uio; 632170808Sdelphij int ioflag = v->a_ioflag; 633170808Sdelphij struct thread *td = uio->uio_td; 634170808Sdelphij 635170808Sdelphij boolean_t extended; 636171489Sdelphij int error = 0; 637170808Sdelphij off_t oldsize; 638170808Sdelphij struct tmpfs_node *node; 639170808Sdelphij vm_object_t uobj; 640171489Sdelphij size_t len; 641171489Sdelphij int resid; 642170808Sdelphij 643170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 644170808Sdelphij oldsize = node->tn_size; 645170808Sdelphij 646170808Sdelphij if (uio->uio_offset < 0 || vp->v_type != VREG) { 647170808Sdelphij error = EINVAL; 648170808Sdelphij goto out; 649170808Sdelphij } 650170808Sdelphij 651170808Sdelphij if (uio->uio_resid == 0) { 652170808Sdelphij error = 0; 653170808Sdelphij goto out; 654170808Sdelphij } 655170808Sdelphij 656170808Sdelphij if (ioflag & IO_APPEND) 657170808Sdelphij uio->uio_offset = node->tn_size; 658171070Sdelphij 659171070Sdelphij if (uio->uio_offset + uio->uio_resid > 660170808Sdelphij VFS_TO_TMPFS(vp->v_mount)->tm_maxfilesize) 661170808Sdelphij return (EFBIG); 662170808Sdelphij 663170808Sdelphij if (vp->v_type == VREG && td != NULL) { 664170808Sdelphij PROC_LOCK(td->td_proc); 665170808Sdelphij if (uio->uio_offset + uio->uio_resid > 666170808Sdelphij lim_cur(td->td_proc, RLIMIT_FSIZE)) { 667170808Sdelphij psignal(td->td_proc, SIGXFSZ); 668170808Sdelphij PROC_UNLOCK(td->td_proc); 669170808Sdelphij return (EFBIG); 670170808Sdelphij } 671170808Sdelphij PROC_UNLOCK(td->td_proc); 672170808Sdelphij } 673170808Sdelphij 674170808Sdelphij extended = uio->uio_offset + uio->uio_resid > node->tn_size; 675170808Sdelphij if (extended) { 676170808Sdelphij error = tmpfs_reg_resize(vp, uio->uio_offset + uio->uio_resid); 677170808Sdelphij if (error != 0) 678170808Sdelphij goto out; 679170808Sdelphij } 680170808Sdelphij 681170808Sdelphij uobj = node->tn_reg.tn_aobj; 682171489Sdelphij while ((resid = uio->uio_resid) > 0) { 683171489Sdelphij if (node->tn_size <= uio->uio_offset) 684171489Sdelphij break; 685171489Sdelphij len = MIN(node->tn_size - uio->uio_offset, resid); 686171489Sdelphij if (len == 0) 687171489Sdelphij break; 688171489Sdelphij error = tmpfs_mappedwrite(vp->v_object, uobj, len, uio); 689171489Sdelphij if ((error != 0) || (resid == uio->uio_resid)) 690171489Sdelphij break; 691171489Sdelphij } 692170808Sdelphij 693170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED | TMPFS_NODE_MODIFIED | 694170808Sdelphij (extended ? TMPFS_NODE_CHANGED : 0); 695170808Sdelphij 696170808Sdelphij if (node->tn_mode & (S_ISUID | S_ISGID)) { 697170808Sdelphij if (priv_check_cred(v->a_cred, PRIV_VFS_RETAINSUGID, 0)) 698170808Sdelphij node->tn_mode &= ~(S_ISUID | S_ISGID); 699170808Sdelphij } 700170808Sdelphij 701170808Sdelphij if (error != 0) 702170808Sdelphij (void)tmpfs_reg_resize(vp, oldsize); 703170808Sdelphij 704170808Sdelphijout: 705170808Sdelphij MPASS(IMPLIES(error == 0, uio->uio_resid == 0)); 706170808Sdelphij MPASS(IMPLIES(error != 0, oldsize == node->tn_size)); 707170808Sdelphij 708170808Sdelphij return error; 709170808Sdelphij} 710170808Sdelphij 711170808Sdelphij/* --------------------------------------------------------------------- */ 712170808Sdelphij 713171069Sdelphijstatic int 714170808Sdelphijtmpfs_fsync(struct vop_fsync_args *v) 715170808Sdelphij{ 716170808Sdelphij struct vnode *vp = v->a_vp; 717170808Sdelphij 718176559Sattilio MPASS(VOP_ISLOCKED(vp)); 719170808Sdelphij 720170808Sdelphij tmpfs_update(vp); 721170808Sdelphij 722170808Sdelphij return 0; 723170808Sdelphij} 724170808Sdelphij 725170808Sdelphij/* --------------------------------------------------------------------- */ 726170808Sdelphij 727171069Sdelphijstatic int 728170808Sdelphijtmpfs_remove(struct vop_remove_args *v) 729170808Sdelphij{ 730170808Sdelphij struct vnode *dvp = v->a_dvp; 731170808Sdelphij struct vnode *vp = v->a_vp; 732170808Sdelphij 733170808Sdelphij int error; 734170808Sdelphij struct tmpfs_dirent *de; 735170808Sdelphij struct tmpfs_mount *tmp; 736170808Sdelphij struct tmpfs_node *dnode; 737170808Sdelphij struct tmpfs_node *node; 738170808Sdelphij 739176559Sattilio MPASS(VOP_ISLOCKED(dvp)); 740176559Sattilio MPASS(VOP_ISLOCKED(vp)); 741170808Sdelphij 742170808Sdelphij if (vp->v_type == VDIR) { 743170808Sdelphij error = EISDIR; 744170808Sdelphij goto out; 745170808Sdelphij } 746170808Sdelphij 747170808Sdelphij dnode = VP_TO_TMPFS_DIR(dvp); 748170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 749170808Sdelphij tmp = VFS_TO_TMPFS(vp->v_mount); 750188318Skib de = tmpfs_dir_lookup(dnode, node, v->a_cnp); 751170808Sdelphij MPASS(de != NULL); 752170808Sdelphij 753170808Sdelphij /* Files marked as immutable or append-only cannot be deleted. */ 754170808Sdelphij if ((node->tn_flags & (IMMUTABLE | APPEND | NOUNLINK)) || 755170808Sdelphij (dnode->tn_flags & APPEND)) { 756170808Sdelphij error = EPERM; 757170808Sdelphij goto out; 758170808Sdelphij } 759170808Sdelphij 760170808Sdelphij /* Remove the entry from the directory; as it is a file, we do not 761170808Sdelphij * have to change the number of hard links of the directory. */ 762170808Sdelphij tmpfs_dir_detach(dvp, de); 763170808Sdelphij 764170808Sdelphij /* Free the directory entry we just deleted. Note that the node 765170808Sdelphij * referred by it will not be removed until the vnode is really 766170808Sdelphij * reclaimed. */ 767170808Sdelphij tmpfs_free_dirent(tmp, de, TRUE); 768170808Sdelphij 769170808Sdelphij if (node->tn_links > 0) 770170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED | TMPFS_NODE_CHANGED | \ 771170808Sdelphij TMPFS_NODE_MODIFIED; 772170808Sdelphij error = 0; 773170808Sdelphij 774170808Sdelphijout: 775170808Sdelphij 776170808Sdelphij return error; 777170808Sdelphij} 778170808Sdelphij 779170808Sdelphij/* --------------------------------------------------------------------- */ 780170808Sdelphij 781171069Sdelphijstatic int 782170808Sdelphijtmpfs_link(struct vop_link_args *v) 783170808Sdelphij{ 784170808Sdelphij struct vnode *dvp = v->a_tdvp; 785170808Sdelphij struct vnode *vp = v->a_vp; 786170808Sdelphij struct componentname *cnp = v->a_cnp; 787170808Sdelphij 788170808Sdelphij int error; 789170808Sdelphij struct tmpfs_dirent *de; 790170808Sdelphij struct tmpfs_node *node; 791170808Sdelphij 792176559Sattilio MPASS(VOP_ISLOCKED(dvp)); 793170808Sdelphij MPASS(cnp->cn_flags & HASBUF); 794170808Sdelphij MPASS(dvp != vp); /* XXX When can this be false? */ 795170808Sdelphij 796170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 797170808Sdelphij 798170808Sdelphij /* XXX: Why aren't the following two tests done by the caller? */ 799170808Sdelphij 800170808Sdelphij /* Hard links of directories are forbidden. */ 801170808Sdelphij if (vp->v_type == VDIR) { 802170808Sdelphij error = EPERM; 803170808Sdelphij goto out; 804170808Sdelphij } 805170808Sdelphij 806170808Sdelphij /* Cannot create cross-device links. */ 807170808Sdelphij if (dvp->v_mount != vp->v_mount) { 808170808Sdelphij error = EXDEV; 809170808Sdelphij goto out; 810170808Sdelphij } 811170808Sdelphij 812170808Sdelphij /* Ensure that we do not overflow the maximum number of links imposed 813170808Sdelphij * by the system. */ 814170808Sdelphij MPASS(node->tn_links <= LINK_MAX); 815170808Sdelphij if (node->tn_links == LINK_MAX) { 816170808Sdelphij error = EMLINK; 817170808Sdelphij goto out; 818170808Sdelphij } 819170808Sdelphij 820170808Sdelphij /* We cannot create links of files marked immutable or append-only. */ 821170808Sdelphij if (node->tn_flags & (IMMUTABLE | APPEND)) { 822170808Sdelphij error = EPERM; 823170808Sdelphij goto out; 824170808Sdelphij } 825170808Sdelphij 826170808Sdelphij /* Allocate a new directory entry to represent the node. */ 827170808Sdelphij error = tmpfs_alloc_dirent(VFS_TO_TMPFS(vp->v_mount), node, 828170808Sdelphij cnp->cn_nameptr, cnp->cn_namelen, &de); 829170808Sdelphij if (error != 0) 830170808Sdelphij goto out; 831170808Sdelphij 832170808Sdelphij /* Insert the new directory entry into the appropriate directory. */ 833170808Sdelphij tmpfs_dir_attach(dvp, de); 834170808Sdelphij 835170808Sdelphij /* vp link count has changed, so update node times. */ 836170808Sdelphij node->tn_status |= TMPFS_NODE_CHANGED; 837170808Sdelphij tmpfs_update(vp); 838170808Sdelphij 839170808Sdelphij error = 0; 840171070Sdelphij 841170808Sdelphijout: 842170808Sdelphij return error; 843170808Sdelphij} 844170808Sdelphij 845170808Sdelphij/* --------------------------------------------------------------------- */ 846170808Sdelphij 847171069Sdelphijstatic int 848170808Sdelphijtmpfs_rename(struct vop_rename_args *v) 849170808Sdelphij{ 850170808Sdelphij struct vnode *fdvp = v->a_fdvp; 851170808Sdelphij struct vnode *fvp = v->a_fvp; 852170808Sdelphij struct componentname *fcnp = v->a_fcnp; 853170808Sdelphij struct vnode *tdvp = v->a_tdvp; 854170808Sdelphij struct vnode *tvp = v->a_tvp; 855170808Sdelphij struct componentname *tcnp = v->a_tcnp; 856170808Sdelphij 857170808Sdelphij char *newname; 858170808Sdelphij int error; 859170808Sdelphij struct tmpfs_dirent *de; 860170808Sdelphij struct tmpfs_node *fdnode; 861170808Sdelphij struct tmpfs_node *fnode; 862171799Sdelphij struct tmpfs_node *tnode; 863170808Sdelphij struct tmpfs_node *tdnode; 864170808Sdelphij 865176559Sattilio MPASS(VOP_ISLOCKED(tdvp)); 866176559Sattilio MPASS(IMPLIES(tvp != NULL, VOP_ISLOCKED(tvp))); 867170808Sdelphij MPASS(fcnp->cn_flags & HASBUF); 868170808Sdelphij MPASS(tcnp->cn_flags & HASBUF); 869170808Sdelphij 870171799Sdelphij tnode = (tvp == NULL) ? NULL : VP_TO_TMPFS_NODE(tvp); 871170808Sdelphij 872170808Sdelphij /* Disallow cross-device renames. 873170808Sdelphij * XXX Why isn't this done by the caller? */ 874170808Sdelphij if (fvp->v_mount != tdvp->v_mount || 875170808Sdelphij (tvp != NULL && fvp->v_mount != tvp->v_mount)) { 876170808Sdelphij error = EXDEV; 877170808Sdelphij goto out; 878170808Sdelphij } 879170808Sdelphij 880170808Sdelphij tdnode = VP_TO_TMPFS_DIR(tdvp); 881170808Sdelphij 882170808Sdelphij /* If source and target are the same file, there is nothing to do. */ 883170808Sdelphij if (fvp == tvp) { 884170808Sdelphij error = 0; 885170808Sdelphij goto out; 886170808Sdelphij } 887170808Sdelphij 888173725Sdelphij /* If we need to move the directory between entries, lock the 889173725Sdelphij * source so that we can safely operate on it. */ 890173725Sdelphij if (tdvp != fdvp) { 891175202Sattilio error = vn_lock(fdvp, LK_EXCLUSIVE | LK_RETRY); 892173725Sdelphij if (error != 0) 893173725Sdelphij goto out; 894173725Sdelphij } 895173725Sdelphij fdnode = VP_TO_TMPFS_DIR(fdvp); 896173725Sdelphij fnode = VP_TO_TMPFS_NODE(fvp); 897188318Skib de = tmpfs_dir_lookup(fdnode, fnode, fcnp); 898173725Sdelphij 899170808Sdelphij /* Avoid manipulating '.' and '..' entries. */ 900170808Sdelphij if (de == NULL) { 901170808Sdelphij MPASS(fvp->v_type == VDIR); 902170808Sdelphij error = EINVAL; 903173725Sdelphij goto out_locked; 904170808Sdelphij } 905170808Sdelphij MPASS(de->td_node == fnode); 906170808Sdelphij 907171070Sdelphij /* If re-naming a directory to another preexisting directory 908170808Sdelphij * ensure that the target directory is empty so that its 909171070Sdelphij * removal causes no side effects. 910170808Sdelphij * Kern_rename gurantees the destination to be a directory 911170808Sdelphij * if the source is one. */ 912170808Sdelphij if (tvp != NULL) { 913171799Sdelphij MPASS(tnode != NULL); 914171070Sdelphij 915170808Sdelphij if ((tnode->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) || 916170808Sdelphij (tdnode->tn_flags & (APPEND | IMMUTABLE))) { 917170808Sdelphij error = EPERM; 918173725Sdelphij goto out_locked; 919170808Sdelphij } 920170808Sdelphij 921171799Sdelphij if (fnode->tn_type == VDIR && tnode->tn_type == VDIR) { 922171799Sdelphij if (tnode->tn_size > 0) { 923171799Sdelphij error = ENOTEMPTY; 924173725Sdelphij goto out_locked; 925171799Sdelphij } 926171799Sdelphij } else if (fnode->tn_type == VDIR && tnode->tn_type != VDIR) { 927171799Sdelphij error = ENOTDIR; 928173725Sdelphij goto out_locked; 929171799Sdelphij } else if (fnode->tn_type != VDIR && tnode->tn_type == VDIR) { 930171799Sdelphij error = EISDIR; 931173725Sdelphij goto out_locked; 932171799Sdelphij } else { 933171799Sdelphij MPASS(fnode->tn_type != VDIR && 934171799Sdelphij tnode->tn_type != VDIR); 935170808Sdelphij } 936170808Sdelphij } 937170808Sdelphij 938170808Sdelphij if ((fnode->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) 939170808Sdelphij || (fdnode->tn_flags & (APPEND | IMMUTABLE))) { 940170808Sdelphij error = EPERM; 941170808Sdelphij goto out_locked; 942170808Sdelphij } 943170808Sdelphij 944170808Sdelphij /* Ensure that we have enough memory to hold the new name, if it 945170808Sdelphij * has to be changed. */ 946170808Sdelphij if (fcnp->cn_namelen != tcnp->cn_namelen || 947183299Sobrien bcmp(fcnp->cn_nameptr, tcnp->cn_nameptr, fcnp->cn_namelen) != 0) { 948171087Sdelphij newname = malloc(tcnp->cn_namelen, M_TMPFSNAME, M_WAITOK); 949170808Sdelphij } else 950170808Sdelphij newname = NULL; 951170808Sdelphij 952170808Sdelphij /* If the node is being moved to another directory, we have to do 953170808Sdelphij * the move. */ 954170808Sdelphij if (fdnode != tdnode) { 955170808Sdelphij /* In case we are moving a directory, we have to adjust its 956170808Sdelphij * parent to point to the new parent. */ 957170808Sdelphij if (de->td_node->tn_type == VDIR) { 958170808Sdelphij struct tmpfs_node *n; 959170808Sdelphij 960170808Sdelphij /* Ensure the target directory is not a child of the 961170808Sdelphij * directory being moved. Otherwise, we'd end up 962170808Sdelphij * with stale nodes. */ 963170808Sdelphij n = tdnode; 964170808Sdelphij while (n != n->tn_dir.tn_parent) { 965170808Sdelphij if (n == fnode) { 966170808Sdelphij error = EINVAL; 967170808Sdelphij if (newname != NULL) 968171087Sdelphij free(newname, M_TMPFSNAME); 969170808Sdelphij goto out_locked; 970170808Sdelphij } 971170808Sdelphij n = n->tn_dir.tn_parent; 972170808Sdelphij } 973170808Sdelphij 974170808Sdelphij /* Adjust the parent pointer. */ 975170808Sdelphij TMPFS_VALIDATE_DIR(fnode); 976170808Sdelphij de->td_node->tn_dir.tn_parent = tdnode; 977170808Sdelphij 978170808Sdelphij /* As a result of changing the target of the '..' 979170808Sdelphij * entry, the link count of the source and target 980170808Sdelphij * directories has to be adjusted. */ 981170808Sdelphij fdnode->tn_links--; 982170808Sdelphij tdnode->tn_links++; 983170808Sdelphij } 984170808Sdelphij 985170808Sdelphij /* Do the move: just remove the entry from the source directory 986170808Sdelphij * and insert it into the target one. */ 987170808Sdelphij tmpfs_dir_detach(fdvp, de); 988170808Sdelphij tmpfs_dir_attach(tdvp, de); 989170808Sdelphij } 990170808Sdelphij 991170808Sdelphij /* If the name has changed, we need to make it effective by changing 992170808Sdelphij * it in the directory entry. */ 993170808Sdelphij if (newname != NULL) { 994170808Sdelphij MPASS(tcnp->cn_namelen <= MAXNAMLEN); 995170808Sdelphij 996171087Sdelphij free(de->td_name, M_TMPFSNAME); 997170808Sdelphij de->td_namelen = (uint16_t)tcnp->cn_namelen; 998170808Sdelphij memcpy(newname, tcnp->cn_nameptr, tcnp->cn_namelen); 999170808Sdelphij de->td_name = newname; 1000170808Sdelphij 1001170808Sdelphij fnode->tn_status |= TMPFS_NODE_CHANGED; 1002170808Sdelphij tdnode->tn_status |= TMPFS_NODE_MODIFIED; 1003170808Sdelphij } 1004170808Sdelphij 1005170808Sdelphij /* If we are overwriting an entry, we have to remove the old one 1006170808Sdelphij * from the target directory. */ 1007170808Sdelphij if (tvp != NULL) { 1008170808Sdelphij /* Remove the old entry from the target directory. */ 1009188318Skib de = tmpfs_dir_lookup(tdnode, tnode, tcnp); 1010170808Sdelphij tmpfs_dir_detach(tdvp, de); 1011170808Sdelphij 1012170808Sdelphij /* Free the directory entry we just deleted. Note that the 1013170808Sdelphij * node referred by it will not be removed until the vnode is 1014170808Sdelphij * really reclaimed. */ 1015170808Sdelphij tmpfs_free_dirent(VFS_TO_TMPFS(tvp->v_mount), de, TRUE); 1016170808Sdelphij } 1017170808Sdelphij 1018170808Sdelphij error = 0; 1019170808Sdelphij 1020170808Sdelphijout_locked: 1021170808Sdelphij if (fdnode != tdnode) 1022175294Sattilio VOP_UNLOCK(fdvp, 0); 1023170808Sdelphij 1024170808Sdelphijout: 1025170808Sdelphij /* Release target nodes. */ 1026170808Sdelphij /* XXX: I don't understand when tdvp can be the same as tvp, but 1027170808Sdelphij * other code takes care of this... */ 1028170808Sdelphij if (tdvp == tvp) 1029170808Sdelphij vrele(tdvp); 1030170808Sdelphij else 1031170808Sdelphij vput(tdvp); 1032170808Sdelphij if (tvp != NULL) 1033170808Sdelphij vput(tvp); 1034170808Sdelphij 1035170808Sdelphij /* Release source nodes. */ 1036170808Sdelphij vrele(fdvp); 1037170808Sdelphij vrele(fvp); 1038170808Sdelphij 1039170808Sdelphij return error; 1040170808Sdelphij} 1041170808Sdelphij 1042170808Sdelphij/* --------------------------------------------------------------------- */ 1043170808Sdelphij 1044171069Sdelphijstatic int 1045170808Sdelphijtmpfs_mkdir(struct vop_mkdir_args *v) 1046170808Sdelphij{ 1047170808Sdelphij struct vnode *dvp = v->a_dvp; 1048170808Sdelphij struct vnode **vpp = v->a_vpp; 1049170808Sdelphij struct componentname *cnp = v->a_cnp; 1050170808Sdelphij struct vattr *vap = v->a_vap; 1051170808Sdelphij 1052170808Sdelphij MPASS(vap->va_type == VDIR); 1053170808Sdelphij 1054170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL); 1055170808Sdelphij} 1056170808Sdelphij 1057170808Sdelphij/* --------------------------------------------------------------------- */ 1058170808Sdelphij 1059171069Sdelphijstatic int 1060170808Sdelphijtmpfs_rmdir(struct vop_rmdir_args *v) 1061170808Sdelphij{ 1062170808Sdelphij struct vnode *dvp = v->a_dvp; 1063170808Sdelphij struct vnode *vp = v->a_vp; 1064170808Sdelphij 1065170808Sdelphij int error; 1066170808Sdelphij struct tmpfs_dirent *de; 1067170808Sdelphij struct tmpfs_mount *tmp; 1068170808Sdelphij struct tmpfs_node *dnode; 1069170808Sdelphij struct tmpfs_node *node; 1070170808Sdelphij 1071176559Sattilio MPASS(VOP_ISLOCKED(dvp)); 1072176559Sattilio MPASS(VOP_ISLOCKED(vp)); 1073170808Sdelphij 1074170808Sdelphij tmp = VFS_TO_TMPFS(dvp->v_mount); 1075170808Sdelphij dnode = VP_TO_TMPFS_DIR(dvp); 1076170808Sdelphij node = VP_TO_TMPFS_DIR(vp); 1077170808Sdelphij 1078171070Sdelphij /* Directories with more than two entries ('.' and '..') cannot be 1079171070Sdelphij * removed. */ 1080171070Sdelphij if (node->tn_size > 0) { 1081171070Sdelphij error = ENOTEMPTY; 1082171070Sdelphij goto out; 1083171070Sdelphij } 1084170808Sdelphij 1085170808Sdelphij if ((dnode->tn_flags & APPEND) 1086170808Sdelphij || (node->tn_flags & (NOUNLINK | IMMUTABLE | APPEND))) { 1087170808Sdelphij error = EPERM; 1088170808Sdelphij goto out; 1089170808Sdelphij } 1090170808Sdelphij 1091171070Sdelphij /* This invariant holds only if we are not trying to remove "..". 1092171070Sdelphij * We checked for that above so this is safe now. */ 1093170808Sdelphij MPASS(node->tn_dir.tn_parent == dnode); 1094170808Sdelphij 1095170808Sdelphij /* Get the directory entry associated with node (vp). This was 1096170808Sdelphij * filled by tmpfs_lookup while looking up the entry. */ 1097188318Skib de = tmpfs_dir_lookup(dnode, node, v->a_cnp); 1098170808Sdelphij MPASS(TMPFS_DIRENT_MATCHES(de, 1099170808Sdelphij v->a_cnp->cn_nameptr, 1100170808Sdelphij v->a_cnp->cn_namelen)); 1101170808Sdelphij 1102170808Sdelphij /* Check flags to see if we are allowed to remove the directory. */ 1103170808Sdelphij if (dnode->tn_flags & APPEND 1104170808Sdelphij || node->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) { 1105170808Sdelphij error = EPERM; 1106170808Sdelphij goto out; 1107170808Sdelphij } 1108170808Sdelphij 1109170808Sdelphij /* Detach the directory entry from the directory (dnode). */ 1110170808Sdelphij tmpfs_dir_detach(dvp, de); 1111170808Sdelphij 1112170808Sdelphij node->tn_links--; 1113170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED | TMPFS_NODE_CHANGED | \ 1114170808Sdelphij TMPFS_NODE_MODIFIED; 1115170808Sdelphij node->tn_dir.tn_parent->tn_links--; 1116170808Sdelphij node->tn_dir.tn_parent->tn_status |= TMPFS_NODE_ACCESSED | \ 1117170808Sdelphij TMPFS_NODE_CHANGED | TMPFS_NODE_MODIFIED; 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. */ 1125170808Sdelphij tmpfs_free_dirent(tmp, de, TRUE); 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 1139170808Sdelphij/* --------------------------------------------------------------------- */ 1140170808Sdelphij 1141171069Sdelphijstatic int 1142170808Sdelphijtmpfs_symlink(struct vop_symlink_args *v) 1143170808Sdelphij{ 1144170808Sdelphij struct vnode *dvp = v->a_dvp; 1145170808Sdelphij struct vnode **vpp = v->a_vpp; 1146170808Sdelphij struct componentname *cnp = v->a_cnp; 1147170808Sdelphij struct vattr *vap = v->a_vap; 1148170808Sdelphij char *target = v->a_target; 1149170808Sdelphij 1150170808Sdelphij#ifdef notyet /* XXX FreeBSD BUG: kern_symlink is not setting VLNK */ 1151170808Sdelphij MPASS(vap->va_type == VLNK); 1152170808Sdelphij#else 1153170808Sdelphij vap->va_type = VLNK; 1154170808Sdelphij#endif 1155170808Sdelphij 1156170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, target); 1157170808Sdelphij} 1158170808Sdelphij 1159170808Sdelphij/* --------------------------------------------------------------------- */ 1160170808Sdelphij 1161171069Sdelphijstatic int 1162170808Sdelphijtmpfs_readdir(struct vop_readdir_args *v) 1163170808Sdelphij{ 1164170808Sdelphij struct vnode *vp = v->a_vp; 1165170808Sdelphij struct uio *uio = v->a_uio; 1166170808Sdelphij int *eofflag = v->a_eofflag; 1167170808Sdelphij u_long **cookies = v->a_cookies; 1168170808Sdelphij int *ncookies = v->a_ncookies; 1169170808Sdelphij 1170170808Sdelphij int error; 1171170808Sdelphij off_t startoff; 1172171802Sdelphij off_t cnt = 0; 1173170808Sdelphij struct tmpfs_node *node; 1174170808Sdelphij 1175170808Sdelphij /* This operation only makes sense on directory nodes. */ 1176171802Sdelphij if (vp->v_type != VDIR) 1177171802Sdelphij return ENOTDIR; 1178170808Sdelphij 1179170808Sdelphij node = VP_TO_TMPFS_DIR(vp); 1180170808Sdelphij 1181170808Sdelphij startoff = uio->uio_offset; 1182170808Sdelphij 1183171862Sdelphij if (uio->uio_offset == TMPFS_DIRCOOKIE_DOT) { 1184170808Sdelphij error = tmpfs_dir_getdotdent(node, uio); 1185171862Sdelphij if (error != 0) 1186171862Sdelphij goto outok; 1187171862Sdelphij cnt++; 1188171862Sdelphij } 1189171862Sdelphij 1190171862Sdelphij if (uio->uio_offset == TMPFS_DIRCOOKIE_DOTDOT) { 1191170808Sdelphij error = tmpfs_dir_getdotdotdent(node, uio); 1192171862Sdelphij if (error != 0) 1193171862Sdelphij goto outok; 1194171862Sdelphij cnt++; 1195170808Sdelphij } 1196170808Sdelphij 1197171862Sdelphij error = tmpfs_dir_getdents(node, uio, &cnt); 1198171862Sdelphij 1199171862Sdelphijoutok: 1200171862Sdelphij MPASS(error >= -1); 1201171862Sdelphij 1202170808Sdelphij if (error == -1) 1203170808Sdelphij error = 0; 1204170808Sdelphij 1205170808Sdelphij if (eofflag != NULL) 1206170808Sdelphij *eofflag = 1207170808Sdelphij (error == 0 && uio->uio_offset == TMPFS_DIRCOOKIE_EOF); 1208170808Sdelphij 1209170808Sdelphij /* Update NFS-related variables. */ 1210170808Sdelphij if (error == 0 && cookies != NULL && ncookies != NULL) { 1211170808Sdelphij off_t i; 1212170808Sdelphij off_t off = startoff; 1213170808Sdelphij struct tmpfs_dirent *de = NULL; 1214170808Sdelphij 1215170808Sdelphij *ncookies = cnt; 1216170808Sdelphij *cookies = malloc(cnt * sizeof(off_t), M_TEMP, M_WAITOK); 1217170808Sdelphij 1218170808Sdelphij for (i = 0; i < cnt; i++) { 1219170808Sdelphij MPASS(off != TMPFS_DIRCOOKIE_EOF); 1220170808Sdelphij if (off == TMPFS_DIRCOOKIE_DOT) { 1221170808Sdelphij off = TMPFS_DIRCOOKIE_DOTDOT; 1222170808Sdelphij } else { 1223170808Sdelphij if (off == TMPFS_DIRCOOKIE_DOTDOT) { 1224170808Sdelphij de = TAILQ_FIRST(&node->tn_dir.tn_dirhead); 1225170808Sdelphij } else if (de != NULL) { 1226170808Sdelphij de = TAILQ_NEXT(de, td_entries); 1227170808Sdelphij } else { 1228170808Sdelphij de = tmpfs_dir_lookupbycookie(node, 1229170808Sdelphij off); 1230170808Sdelphij MPASS(de != NULL); 1231170808Sdelphij de = TAILQ_NEXT(de, td_entries); 1232170808Sdelphij } 1233171802Sdelphij if (de == NULL) 1234170808Sdelphij off = TMPFS_DIRCOOKIE_EOF; 1235171802Sdelphij else 1236171802Sdelphij off = tmpfs_dircookie(de); 1237170808Sdelphij } 1238170808Sdelphij 1239170808Sdelphij (*cookies)[i] = off; 1240170808Sdelphij } 1241170808Sdelphij MPASS(uio->uio_offset == off); 1242170808Sdelphij } 1243170808Sdelphij 1244170808Sdelphij return error; 1245170808Sdelphij} 1246170808Sdelphij 1247170808Sdelphij/* --------------------------------------------------------------------- */ 1248170808Sdelphij 1249171069Sdelphijstatic int 1250170808Sdelphijtmpfs_readlink(struct vop_readlink_args *v) 1251170808Sdelphij{ 1252170808Sdelphij struct vnode *vp = v->a_vp; 1253170808Sdelphij struct uio *uio = v->a_uio; 1254170808Sdelphij 1255170808Sdelphij int error; 1256170808Sdelphij struct tmpfs_node *node; 1257170808Sdelphij 1258170808Sdelphij MPASS(uio->uio_offset == 0); 1259170808Sdelphij MPASS(vp->v_type == VLNK); 1260170808Sdelphij 1261170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1262170808Sdelphij 1263170808Sdelphij error = uiomove(node->tn_link, MIN(node->tn_size, uio->uio_resid), 1264170808Sdelphij uio); 1265170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED; 1266170808Sdelphij 1267170808Sdelphij return error; 1268170808Sdelphij} 1269170808Sdelphij 1270170808Sdelphij/* --------------------------------------------------------------------- */ 1271170808Sdelphij 1272171069Sdelphijstatic int 1273170808Sdelphijtmpfs_inactive(struct vop_inactive_args *v) 1274170808Sdelphij{ 1275170808Sdelphij struct vnode *vp = v->a_vp; 1276170808Sdelphij struct thread *l = v->a_td; 1277170808Sdelphij 1278170808Sdelphij struct tmpfs_node *node; 1279170808Sdelphij 1280176559Sattilio MPASS(VOP_ISLOCKED(vp)); 1281170808Sdelphij 1282170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1283170808Sdelphij 1284170808Sdelphij if (node->tn_links == 0) 1285170808Sdelphij vrecycle(vp, l); 1286170808Sdelphij 1287170808Sdelphij return 0; 1288170808Sdelphij} 1289170808Sdelphij 1290170808Sdelphij/* --------------------------------------------------------------------- */ 1291170808Sdelphij 1292170808Sdelphijint 1293170808Sdelphijtmpfs_reclaim(struct vop_reclaim_args *v) 1294170808Sdelphij{ 1295170808Sdelphij struct vnode *vp = v->a_vp; 1296170808Sdelphij 1297170808Sdelphij struct tmpfs_mount *tmp; 1298170808Sdelphij struct tmpfs_node *node; 1299170808Sdelphij 1300170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1301170808Sdelphij tmp = VFS_TO_TMPFS(vp->v_mount); 1302171070Sdelphij 1303170808Sdelphij vnode_destroy_vobject(vp); 1304170808Sdelphij cache_purge(vp); 1305170808Sdelphij tmpfs_free_vp(vp); 1306170808Sdelphij 1307170808Sdelphij /* If the node referenced by this vnode was deleted by the user, 1308170808Sdelphij * we must free its associated data structures (now that the vnode 1309170808Sdelphij * is being reclaimed). */ 1310170808Sdelphij if (node->tn_links == 0) 1311170808Sdelphij tmpfs_free_node(tmp, node); 1312170808Sdelphij 1313170808Sdelphij MPASS(vp->v_data == NULL); 1314170808Sdelphij return 0; 1315170808Sdelphij} 1316170808Sdelphij 1317170808Sdelphij/* --------------------------------------------------------------------- */ 1318170808Sdelphij 1319171069Sdelphijstatic int 1320170808Sdelphijtmpfs_print(struct vop_print_args *v) 1321170808Sdelphij{ 1322170808Sdelphij struct vnode *vp = v->a_vp; 1323170808Sdelphij 1324170808Sdelphij struct tmpfs_node *node; 1325170808Sdelphij 1326170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1327170808Sdelphij 1328170808Sdelphij printf("tag VT_TMPFS, tmpfs_node %p, flags 0x%x, links %d\n", 1329170808Sdelphij node, node->tn_flags, node->tn_links); 1330170808Sdelphij printf("\tmode 0%o, owner %d, group %d, size %" PRIdMAX 1331170808Sdelphij ", status 0x%x\n", 1332170808Sdelphij node->tn_mode, node->tn_uid, node->tn_gid, 1333170808Sdelphij (uintmax_t)node->tn_size, node->tn_status); 1334170808Sdelphij 1335170808Sdelphij if (vp->v_type == VFIFO) 1336170808Sdelphij fifo_printinfo(vp); 1337170808Sdelphij 1338170808Sdelphij printf("\n"); 1339170808Sdelphij 1340170808Sdelphij return 0; 1341170808Sdelphij} 1342170808Sdelphij 1343170808Sdelphij/* --------------------------------------------------------------------- */ 1344170808Sdelphij 1345171069Sdelphijstatic int 1346170808Sdelphijtmpfs_pathconf(struct vop_pathconf_args *v) 1347170808Sdelphij{ 1348170808Sdelphij int name = v->a_name; 1349170808Sdelphij register_t *retval = v->a_retval; 1350170808Sdelphij 1351170808Sdelphij int error; 1352170808Sdelphij 1353170808Sdelphij error = 0; 1354170808Sdelphij 1355170808Sdelphij switch (name) { 1356170808Sdelphij case _PC_LINK_MAX: 1357170808Sdelphij *retval = LINK_MAX; 1358170808Sdelphij break; 1359170808Sdelphij 1360170808Sdelphij case _PC_NAME_MAX: 1361170808Sdelphij *retval = NAME_MAX; 1362170808Sdelphij break; 1363170808Sdelphij 1364170808Sdelphij case _PC_PATH_MAX: 1365170808Sdelphij *retval = PATH_MAX; 1366170808Sdelphij break; 1367170808Sdelphij 1368170808Sdelphij case _PC_PIPE_BUF: 1369170808Sdelphij *retval = PIPE_BUF; 1370170808Sdelphij break; 1371170808Sdelphij 1372170808Sdelphij case _PC_CHOWN_RESTRICTED: 1373170808Sdelphij *retval = 1; 1374170808Sdelphij break; 1375170808Sdelphij 1376170808Sdelphij case _PC_NO_TRUNC: 1377170808Sdelphij *retval = 1; 1378170808Sdelphij break; 1379170808Sdelphij 1380170808Sdelphij case _PC_SYNC_IO: 1381170808Sdelphij *retval = 1; 1382170808Sdelphij break; 1383170808Sdelphij 1384170808Sdelphij case _PC_FILESIZEBITS: 1385170808Sdelphij *retval = 0; /* XXX Don't know which value should I return. */ 1386170808Sdelphij break; 1387170808Sdelphij 1388170808Sdelphij default: 1389170808Sdelphij error = EINVAL; 1390170808Sdelphij } 1391170808Sdelphij 1392170808Sdelphij return error; 1393170808Sdelphij} 1394170808Sdelphij 1395171069Sdelphijstatic int 1396170808Sdelphijtmpfs_vptofh(struct vop_vptofh_args *ap) 1397170808Sdelphij{ 1398170808Sdelphij struct tmpfs_fid *tfhp; 1399170808Sdelphij struct tmpfs_node *node; 1400170808Sdelphij 1401170808Sdelphij tfhp = (struct tmpfs_fid *)ap->a_fhp; 1402170808Sdelphij node = VP_TO_TMPFS_NODE(ap->a_vp); 1403170808Sdelphij 1404170808Sdelphij tfhp->tf_len = sizeof(struct tmpfs_fid); 1405170808Sdelphij tfhp->tf_id = node->tn_id; 1406170808Sdelphij tfhp->tf_gen = node->tn_gen; 1407171070Sdelphij 1408170808Sdelphij return (0); 1409170808Sdelphij} 1410171069Sdelphij 1411171069Sdelphij/* --------------------------------------------------------------------- */ 1412171069Sdelphij 1413171069Sdelphij/* 1414171069Sdelphij * vnode operations vector used for files stored in a tmpfs file system. 1415171069Sdelphij */ 1416171069Sdelphijstruct vop_vector tmpfs_vnodeop_entries = { 1417171069Sdelphij .vop_default = &default_vnodeops, 1418171069Sdelphij .vop_lookup = vfs_cache_lookup, 1419171069Sdelphij .vop_cachedlookup = tmpfs_lookup, 1420171069Sdelphij .vop_create = tmpfs_create, 1421171069Sdelphij .vop_mknod = tmpfs_mknod, 1422171069Sdelphij .vop_open = tmpfs_open, 1423171069Sdelphij .vop_close = tmpfs_close, 1424171069Sdelphij .vop_access = tmpfs_access, 1425171069Sdelphij .vop_getattr = tmpfs_getattr, 1426171069Sdelphij .vop_setattr = tmpfs_setattr, 1427171069Sdelphij .vop_read = tmpfs_read, 1428171069Sdelphij .vop_write = tmpfs_write, 1429171069Sdelphij .vop_fsync = tmpfs_fsync, 1430171069Sdelphij .vop_remove = tmpfs_remove, 1431171069Sdelphij .vop_link = tmpfs_link, 1432171069Sdelphij .vop_rename = tmpfs_rename, 1433171069Sdelphij .vop_mkdir = tmpfs_mkdir, 1434171069Sdelphij .vop_rmdir = tmpfs_rmdir, 1435171069Sdelphij .vop_symlink = tmpfs_symlink, 1436171069Sdelphij .vop_readdir = tmpfs_readdir, 1437171069Sdelphij .vop_readlink = tmpfs_readlink, 1438171069Sdelphij .vop_inactive = tmpfs_inactive, 1439171069Sdelphij .vop_reclaim = tmpfs_reclaim, 1440171069Sdelphij .vop_print = tmpfs_print, 1441171069Sdelphij .vop_pathconf = tmpfs_pathconf, 1442171069Sdelphij .vop_vptofh = tmpfs_vptofh, 1443171069Sdelphij .vop_bmap = VOP_EOPNOTSUPP, 1444171069Sdelphij}; 1445171069Sdelphij 1446