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("$FreeBSD$"); 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> 48170808Sdelphij#include <sys/stat.h> 49170808Sdelphij#include <sys/systm.h> 50232960Sgleb#include <sys/sysctl.h> 51170808Sdelphij#include <sys/unistd.h> 52170808Sdelphij#include <sys/vnode.h> 53170808Sdelphij 54170808Sdelphij#include <vm/vm.h> 55239065Skib#include <vm/vm_param.h> 56170808Sdelphij#include <vm/vm_object.h> 57170808Sdelphij#include <vm/vm_page.h> 58170808Sdelphij#include <vm/vm_pager.h> 59188929Salc 60170808Sdelphij#include <fs/tmpfs/tmpfs_vnops.h> 61170808Sdelphij#include <fs/tmpfs/tmpfs.h> 62170808Sdelphij 63232960SglebSYSCTL_DECL(_vfs_tmpfs); 64232960Sgleb 65232960Sglebstatic volatile int tmpfs_rename_restarts; 66232960SglebSYSCTL_INT(_vfs_tmpfs, OID_AUTO, rename_restarts, CTLFLAG_RD, 67232960Sgleb __DEVOLATILE(int *, &tmpfs_rename_restarts), 0, 68232960Sgleb "Times rename had to restart due to lock contention"); 69232960Sgleb 70171069Sdelphijstatic int 71269173Skibtmpfs_vn_get_ino_alloc(struct mount *mp, void *arg, int lkflags, 72269173Skib struct vnode **rvp) 73269173Skib{ 74269173Skib 75269173Skib return (tmpfs_alloc_vp(mp, arg, lkflags, rvp)); 76269173Skib} 77269173Skib 78269173Skibstatic int 79170808Sdelphijtmpfs_lookup(struct vop_cachedlookup_args *v) 80170808Sdelphij{ 81170808Sdelphij struct vnode *dvp = v->a_dvp; 82170808Sdelphij struct vnode **vpp = v->a_vpp; 83170808Sdelphij struct componentname *cnp = v->a_cnp; 84170808Sdelphij struct tmpfs_dirent *de; 85170808Sdelphij struct tmpfs_node *dnode; 86269173Skib int error; 87170808Sdelphij 88170808Sdelphij dnode = VP_TO_TMPFS_DIR(dvp); 89170808Sdelphij *vpp = NULLVP; 90170808Sdelphij 91170808Sdelphij /* Check accessibility of requested node as a first step. */ 92191990Sattilio error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, cnp->cn_thread); 93170808Sdelphij if (error != 0) 94170808Sdelphij goto out; 95170808Sdelphij 96170808Sdelphij /* We cannot be requesting the parent directory of the root node. */ 97170808Sdelphij MPASS(IMPLIES(dnode->tn_type == VDIR && 98170808Sdelphij dnode->tn_dir.tn_parent == dnode, 99170808Sdelphij !(cnp->cn_flags & ISDOTDOT))); 100170808Sdelphij 101197953Sdelphij TMPFS_ASSERT_LOCKED(dnode); 102197953Sdelphij if (dnode->tn_dir.tn_parent == NULL) { 103197953Sdelphij error = ENOENT; 104197953Sdelphij goto out; 105197953Sdelphij } 106170808Sdelphij if (cnp->cn_flags & ISDOTDOT) { 107269173Skib error = vn_vget_ino_gen(dvp, tmpfs_vn_get_ino_alloc, 108269173Skib dnode->tn_dir.tn_parent, cnp->cn_lkflags, vpp); 109269173Skib if (error != 0) 110269173Skib goto out; 111170808Sdelphij } else if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 112170808Sdelphij VREF(dvp); 113170808Sdelphij *vpp = dvp; 114170808Sdelphij error = 0; 115170808Sdelphij } else { 116188318Skib de = tmpfs_dir_lookup(dnode, NULL, cnp); 117211598Sed if (de != NULL && de->td_node == NULL) 118211598Sed cnp->cn_flags |= ISWHITEOUT; 119211598Sed if (de == NULL || de->td_node == NULL) { 120170808Sdelphij /* The entry was not found in the directory. 121170808Sdelphij * This is OK if we are creating or renaming an 122170808Sdelphij * entry and are working on the last component of 123170808Sdelphij * the path name. */ 124170808Sdelphij if ((cnp->cn_flags & ISLASTCN) && 125170808Sdelphij (cnp->cn_nameiop == CREATE || \ 126211598Sed cnp->cn_nameiop == RENAME || 127211598Sed (cnp->cn_nameiop == DELETE && 128211598Sed cnp->cn_flags & DOWHITEOUT && 129211598Sed cnp->cn_flags & ISWHITEOUT))) { 130170808Sdelphij error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, 131170808Sdelphij cnp->cn_thread); 132170808Sdelphij if (error != 0) 133170808Sdelphij goto out; 134170808Sdelphij 135170808Sdelphij /* Keep the component name in the buffer for 136170808Sdelphij * future uses. */ 137170808Sdelphij cnp->cn_flags |= SAVENAME; 138170808Sdelphij 139170808Sdelphij error = EJUSTRETURN; 140170808Sdelphij } else 141170808Sdelphij error = ENOENT; 142170808Sdelphij } else { 143170808Sdelphij struct tmpfs_node *tnode; 144170808Sdelphij 145170808Sdelphij /* The entry was found, so get its associated 146170808Sdelphij * tmpfs_node. */ 147170808Sdelphij tnode = de->td_node; 148170808Sdelphij 149170808Sdelphij /* If we are not at the last path component and 150170808Sdelphij * found a non-directory or non-link entry (which 151170808Sdelphij * may itself be pointing to a directory), raise 152170808Sdelphij * an error. */ 153170808Sdelphij if ((tnode->tn_type != VDIR && 154170808Sdelphij tnode->tn_type != VLNK) && 155170808Sdelphij !(cnp->cn_flags & ISLASTCN)) { 156170808Sdelphij error = ENOTDIR; 157170808Sdelphij goto out; 158170808Sdelphij } 159170808Sdelphij 160170808Sdelphij /* If we are deleting or renaming the entry, keep 161170808Sdelphij * track of its tmpfs_dirent so that it can be 162170808Sdelphij * easily deleted later. */ 163170808Sdelphij if ((cnp->cn_flags & ISLASTCN) && 164170808Sdelphij (cnp->cn_nameiop == DELETE || 165170808Sdelphij cnp->cn_nameiop == RENAME)) { 166170808Sdelphij error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, 167170808Sdelphij cnp->cn_thread); 168170808Sdelphij if (error != 0) 169170808Sdelphij goto out; 170171070Sdelphij 171170808Sdelphij /* Allocate a new vnode on the matching entry. */ 172171799Sdelphij error = tmpfs_alloc_vp(dvp->v_mount, tnode, 173269172Skib cnp->cn_lkflags, vpp); 174170808Sdelphij if (error != 0) 175170808Sdelphij goto out; 176170808Sdelphij 177170808Sdelphij if ((dnode->tn_mode & S_ISTXT) && 178170808Sdelphij VOP_ACCESS(dvp, VADMIN, cnp->cn_cred, cnp->cn_thread) && 179170808Sdelphij VOP_ACCESS(*vpp, VADMIN, cnp->cn_cred, cnp->cn_thread)) { 180170808Sdelphij error = EPERM; 181170808Sdelphij vput(*vpp); 182170808Sdelphij *vpp = NULL; 183170808Sdelphij goto out; 184171070Sdelphij } 185170808Sdelphij cnp->cn_flags |= SAVENAME; 186171799Sdelphij } else { 187171799Sdelphij error = tmpfs_alloc_vp(dvp->v_mount, tnode, 188269176Skib cnp->cn_lkflags, vpp); 189269176Skib if (error != 0) 190269176Skib goto out; 191170808Sdelphij } 192170808Sdelphij } 193170808Sdelphij } 194170808Sdelphij 195170808Sdelphij /* Store the result of this lookup in the cache. Avoid this if the 196170808Sdelphij * request was for creation, as it does not improve timings on 197170808Sdelphij * emprical tests. */ 198170808Sdelphij if ((cnp->cn_flags & MAKEENTRY) && cnp->cn_nameiop != CREATE) 199170808Sdelphij cache_enter(dvp, *vpp, cnp); 200170808Sdelphij 201170808Sdelphijout: 202170808Sdelphij /* If there were no errors, *vpp cannot be null and it must be 203170808Sdelphij * locked. */ 204176559Sattilio MPASS(IFF(error == 0, *vpp != NULLVP && VOP_ISLOCKED(*vpp))); 205170808Sdelphij 206170808Sdelphij return error; 207170808Sdelphij} 208170808Sdelphij 209171069Sdelphijstatic int 210170808Sdelphijtmpfs_create(struct vop_create_args *v) 211170808Sdelphij{ 212170808Sdelphij struct vnode *dvp = v->a_dvp; 213170808Sdelphij struct vnode **vpp = v->a_vpp; 214170808Sdelphij struct componentname *cnp = v->a_cnp; 215170808Sdelphij struct vattr *vap = v->a_vap; 216170808Sdelphij 217170808Sdelphij MPASS(vap->va_type == VREG || vap->va_type == VSOCK); 218170808Sdelphij 219170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL); 220170808Sdelphij} 221170808Sdelphij 222171069Sdelphijstatic int 223170808Sdelphijtmpfs_mknod(struct vop_mknod_args *v) 224170808Sdelphij{ 225170808Sdelphij struct vnode *dvp = v->a_dvp; 226170808Sdelphij struct vnode **vpp = v->a_vpp; 227170808Sdelphij struct componentname *cnp = v->a_cnp; 228170808Sdelphij struct vattr *vap = v->a_vap; 229170808Sdelphij 230170808Sdelphij if (vap->va_type != VBLK && vap->va_type != VCHR && 231170808Sdelphij vap->va_type != VFIFO) 232170808Sdelphij return EINVAL; 233170808Sdelphij 234170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL); 235170808Sdelphij} 236170808Sdelphij 237171069Sdelphijstatic int 238170808Sdelphijtmpfs_open(struct vop_open_args *v) 239170808Sdelphij{ 240170808Sdelphij struct vnode *vp = v->a_vp; 241170808Sdelphij int mode = v->a_mode; 242170808Sdelphij 243170808Sdelphij int error; 244170808Sdelphij struct tmpfs_node *node; 245170808Sdelphij 246176559Sattilio MPASS(VOP_ISLOCKED(vp)); 247170808Sdelphij 248170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 249171070Sdelphij 250170808Sdelphij /* The file is still active but all its names have been removed 251170808Sdelphij * (e.g. by a "rmdir $(pwd)"). It cannot be opened any more as 252170808Sdelphij * it is about to die. */ 253170808Sdelphij if (node->tn_links < 1) 254170808Sdelphij return (ENOENT); 255170808Sdelphij 256170808Sdelphij /* If the file is marked append-only, deny write requests. */ 257170808Sdelphij if (node->tn_flags & APPEND && (mode & (FWRITE | O_APPEND)) == FWRITE) 258170808Sdelphij error = EPERM; 259170808Sdelphij else { 260170808Sdelphij error = 0; 261250190Skib /* For regular files, the call below is nop. */ 262269168Skib KASSERT(vp->v_type != VREG || (node->tn_reg.tn_aobj->flags & 263269168Skib OBJ_DEAD) == 0, ("dead object")); 264171070Sdelphij vnode_create_vobject(vp, node->tn_size, v->a_td); 265170808Sdelphij } 266170808Sdelphij 267176559Sattilio MPASS(VOP_ISLOCKED(vp)); 268170808Sdelphij return error; 269170808Sdelphij} 270170808Sdelphij 271171069Sdelphijstatic int 272170808Sdelphijtmpfs_close(struct vop_close_args *v) 273170808Sdelphij{ 274170808Sdelphij struct vnode *vp = v->a_vp; 275170808Sdelphij 276218949Salc /* Update node times. */ 277218949Salc tmpfs_update(vp); 278170808Sdelphij 279218949Salc return (0); 280170808Sdelphij} 281170808Sdelphij 282170808Sdelphijint 283170808Sdelphijtmpfs_access(struct vop_access_args *v) 284170808Sdelphij{ 285170808Sdelphij struct vnode *vp = v->a_vp; 286184413Strasz accmode_t accmode = v->a_accmode; 287170808Sdelphij struct ucred *cred = v->a_cred; 288170808Sdelphij 289170808Sdelphij int error; 290170808Sdelphij struct tmpfs_node *node; 291170808Sdelphij 292176559Sattilio MPASS(VOP_ISLOCKED(vp)); 293170808Sdelphij 294170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 295170808Sdelphij 296170808Sdelphij switch (vp->v_type) { 297170808Sdelphij case VDIR: 298170808Sdelphij /* FALLTHROUGH */ 299170808Sdelphij case VLNK: 300170808Sdelphij /* FALLTHROUGH */ 301170808Sdelphij case VREG: 302184413Strasz if (accmode & VWRITE && vp->v_mount->mnt_flag & MNT_RDONLY) { 303170808Sdelphij error = EROFS; 304170808Sdelphij goto out; 305170808Sdelphij } 306170808Sdelphij break; 307170808Sdelphij 308170808Sdelphij case VBLK: 309170808Sdelphij /* FALLTHROUGH */ 310170808Sdelphij case VCHR: 311170808Sdelphij /* FALLTHROUGH */ 312170808Sdelphij case VSOCK: 313170808Sdelphij /* FALLTHROUGH */ 314170808Sdelphij case VFIFO: 315170808Sdelphij break; 316170808Sdelphij 317170808Sdelphij default: 318170808Sdelphij error = EINVAL; 319170808Sdelphij goto out; 320170808Sdelphij } 321170808Sdelphij 322184413Strasz if (accmode & VWRITE && node->tn_flags & IMMUTABLE) { 323170808Sdelphij error = EPERM; 324170808Sdelphij goto out; 325170808Sdelphij } 326170808Sdelphij 327170808Sdelphij error = vaccess(vp->v_type, node->tn_mode, node->tn_uid, 328184413Strasz node->tn_gid, accmode, cred, NULL); 329170808Sdelphij 330170808Sdelphijout: 331176559Sattilio MPASS(VOP_ISLOCKED(vp)); 332170808Sdelphij 333170808Sdelphij return error; 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 371170808Sdelphijint 372170808Sdelphijtmpfs_setattr(struct vop_setattr_args *v) 373170808Sdelphij{ 374170808Sdelphij struct vnode *vp = v->a_vp; 375170808Sdelphij struct vattr *vap = v->a_vap; 376170808Sdelphij struct ucred *cred = v->a_cred; 377182371Sattilio struct thread *td = curthread; 378170808Sdelphij 379170808Sdelphij int error; 380170808Sdelphij 381176559Sattilio MPASS(VOP_ISLOCKED(vp)); 382170808Sdelphij 383170808Sdelphij error = 0; 384170808Sdelphij 385170808Sdelphij /* Abort if any unsettable attribute is given. */ 386170808Sdelphij if (vap->va_type != VNON || 387170808Sdelphij vap->va_nlink != VNOVAL || 388170808Sdelphij vap->va_fsid != VNOVAL || 389170808Sdelphij vap->va_fileid != VNOVAL || 390170808Sdelphij vap->va_blocksize != VNOVAL || 391170808Sdelphij vap->va_gen != VNOVAL || 392170808Sdelphij vap->va_rdev != VNOVAL || 393170808Sdelphij vap->va_bytes != VNOVAL) 394170808Sdelphij error = EINVAL; 395170808Sdelphij 396170808Sdelphij if (error == 0 && (vap->va_flags != VNOVAL)) 397182371Sattilio error = tmpfs_chflags(vp, vap->va_flags, cred, td); 398170808Sdelphij 399170808Sdelphij if (error == 0 && (vap->va_size != VNOVAL)) 400182371Sattilio error = tmpfs_chsize(vp, vap->va_size, cred, td); 401170808Sdelphij 402170808Sdelphij if (error == 0 && (vap->va_uid != VNOVAL || vap->va_gid != VNOVAL)) 403182371Sattilio error = tmpfs_chown(vp, vap->va_uid, vap->va_gid, cred, td); 404170808Sdelphij 405170808Sdelphij if (error == 0 && (vap->va_mode != (mode_t)VNOVAL)) 406182371Sattilio error = tmpfs_chmod(vp, vap->va_mode, cred, td); 407170808Sdelphij 408170808Sdelphij if (error == 0 && ((vap->va_atime.tv_sec != VNOVAL && 409170808Sdelphij vap->va_atime.tv_nsec != VNOVAL) || 410170808Sdelphij (vap->va_mtime.tv_sec != VNOVAL && 411170808Sdelphij vap->va_mtime.tv_nsec != VNOVAL) || 412170808Sdelphij (vap->va_birthtime.tv_sec != VNOVAL && 413170808Sdelphij vap->va_birthtime.tv_nsec != VNOVAL))) 414267816Skib error = tmpfs_chtimes(vp, vap, cred, td); 415170808Sdelphij 416170808Sdelphij /* Update the node times. We give preference to the error codes 417170808Sdelphij * generated by this function rather than the ones that may arise 418170808Sdelphij * from tmpfs_update. */ 419170808Sdelphij tmpfs_update(vp); 420170808Sdelphij 421176559Sattilio MPASS(VOP_ISLOCKED(vp)); 422170808Sdelphij 423170808Sdelphij return error; 424170808Sdelphij} 425170808Sdelphij 426197850Sdelphijstatic int 427170808Sdelphijtmpfs_read(struct vop_read_args *v) 428170808Sdelphij{ 429254601Skib struct vnode *vp; 430254601Skib struct uio *uio; 431170808Sdelphij struct tmpfs_node *node; 432170808Sdelphij 433254601Skib vp = v->a_vp; 434254601Skib if (vp->v_type != VREG) 435254601Skib return (EISDIR); 436254601Skib uio = v->a_uio; 437254601Skib if (uio->uio_offset < 0) 438254601Skib return (EINVAL); 439170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 440170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED; 441254601Skib return (uiomove_object(node->tn_reg.tn_aobj, node->tn_size, uio)); 442170808Sdelphij} 443170808Sdelphij 444171069Sdelphijstatic int 445170808Sdelphijtmpfs_write(struct vop_write_args *v) 446170808Sdelphij{ 447254601Skib struct vnode *vp; 448254601Skib struct uio *uio; 449254601Skib struct tmpfs_node *node; 450254601Skib off_t oldsize; 451254601Skib int error, ioflag; 452170808Sdelphij boolean_t extended; 453170808Sdelphij 454254601Skib vp = v->a_vp; 455254601Skib uio = v->a_uio; 456254601Skib ioflag = v->a_ioflag; 457254601Skib error = 0; 458170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 459170808Sdelphij oldsize = node->tn_size; 460170808Sdelphij 461254601Skib if (uio->uio_offset < 0 || vp->v_type != VREG) 462254601Skib return (EINVAL); 463254601Skib if (uio->uio_resid == 0) 464254601Skib return (0); 465170808Sdelphij if (ioflag & IO_APPEND) 466170808Sdelphij uio->uio_offset = node->tn_size; 467171070Sdelphij if (uio->uio_offset + uio->uio_resid > 468170808Sdelphij VFS_TO_TMPFS(vp->v_mount)->tm_maxfilesize) 469170808Sdelphij return (EFBIG); 470207719Strasz if (vn_rlimit_fsize(vp, uio, uio->uio_td)) 471207662Strasz return (EFBIG); 472170808Sdelphij extended = uio->uio_offset + uio->uio_resid > node->tn_size; 473170808Sdelphij if (extended) { 474230180Salc error = tmpfs_reg_resize(vp, uio->uio_offset + uio->uio_resid, 475230180Salc FALSE); 476170808Sdelphij if (error != 0) 477170808Sdelphij goto out; 478170808Sdelphij } 479170808Sdelphij 480254601Skib error = uiomove_object(node->tn_reg.tn_aobj, node->tn_size, uio); 481170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED | TMPFS_NODE_MODIFIED | 482170808Sdelphij (extended ? TMPFS_NODE_CHANGED : 0); 483170808Sdelphij if (node->tn_mode & (S_ISUID | S_ISGID)) { 484170808Sdelphij if (priv_check_cred(v->a_cred, PRIV_VFS_RETAINSUGID, 0)) 485170808Sdelphij node->tn_mode &= ~(S_ISUID | S_ISGID); 486170808Sdelphij } 487170808Sdelphij if (error != 0) 488230180Salc (void)tmpfs_reg_resize(vp, oldsize, TRUE); 489170808Sdelphij 490170808Sdelphijout: 491170808Sdelphij MPASS(IMPLIES(error == 0, uio->uio_resid == 0)); 492170808Sdelphij MPASS(IMPLIES(error != 0, oldsize == node->tn_size)); 493170808Sdelphij 494254601Skib return (error); 495170808Sdelphij} 496170808Sdelphij 497171069Sdelphijstatic int 498170808Sdelphijtmpfs_fsync(struct vop_fsync_args *v) 499170808Sdelphij{ 500170808Sdelphij struct vnode *vp = v->a_vp; 501170808Sdelphij 502176559Sattilio MPASS(VOP_ISLOCKED(vp)); 503170808Sdelphij 504170808Sdelphij tmpfs_update(vp); 505170808Sdelphij 506170808Sdelphij return 0; 507170808Sdelphij} 508170808Sdelphij 509171069Sdelphijstatic int 510170808Sdelphijtmpfs_remove(struct vop_remove_args *v) 511170808Sdelphij{ 512170808Sdelphij struct vnode *dvp = v->a_dvp; 513170808Sdelphij struct vnode *vp = v->a_vp; 514170808Sdelphij 515170808Sdelphij int error; 516170808Sdelphij struct tmpfs_dirent *de; 517170808Sdelphij struct tmpfs_mount *tmp; 518170808Sdelphij struct tmpfs_node *dnode; 519170808Sdelphij struct tmpfs_node *node; 520170808Sdelphij 521176559Sattilio MPASS(VOP_ISLOCKED(dvp)); 522176559Sattilio MPASS(VOP_ISLOCKED(vp)); 523170808Sdelphij 524170808Sdelphij if (vp->v_type == VDIR) { 525170808Sdelphij error = EISDIR; 526170808Sdelphij goto out; 527170808Sdelphij } 528170808Sdelphij 529170808Sdelphij dnode = VP_TO_TMPFS_DIR(dvp); 530170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 531170808Sdelphij tmp = VFS_TO_TMPFS(vp->v_mount); 532188318Skib de = tmpfs_dir_lookup(dnode, node, v->a_cnp); 533170808Sdelphij MPASS(de != NULL); 534170808Sdelphij 535170808Sdelphij /* Files marked as immutable or append-only cannot be deleted. */ 536170808Sdelphij if ((node->tn_flags & (IMMUTABLE | APPEND | NOUNLINK)) || 537170808Sdelphij (dnode->tn_flags & APPEND)) { 538170808Sdelphij error = EPERM; 539170808Sdelphij goto out; 540170808Sdelphij } 541170808Sdelphij 542170808Sdelphij /* Remove the entry from the directory; as it is a file, we do not 543170808Sdelphij * have to change the number of hard links of the directory. */ 544170808Sdelphij tmpfs_dir_detach(dvp, de); 545211598Sed if (v->a_cnp->cn_flags & DOWHITEOUT) 546211598Sed tmpfs_dir_whiteout_add(dvp, v->a_cnp); 547170808Sdelphij 548170808Sdelphij /* Free the directory entry we just deleted. Note that the node 549170808Sdelphij * referred by it will not be removed until the vnode is really 550170808Sdelphij * reclaimed. */ 551245115Sgleb tmpfs_free_dirent(tmp, de); 552170808Sdelphij 553218949Salc node->tn_status |= TMPFS_NODE_ACCESSED | TMPFS_NODE_CHANGED; 554170808Sdelphij error = 0; 555170808Sdelphij 556170808Sdelphijout: 557170808Sdelphij 558170808Sdelphij return error; 559170808Sdelphij} 560170808Sdelphij 561171069Sdelphijstatic int 562170808Sdelphijtmpfs_link(struct vop_link_args *v) 563170808Sdelphij{ 564170808Sdelphij struct vnode *dvp = v->a_tdvp; 565170808Sdelphij struct vnode *vp = v->a_vp; 566170808Sdelphij struct componentname *cnp = v->a_cnp; 567170808Sdelphij 568170808Sdelphij int error; 569170808Sdelphij struct tmpfs_dirent *de; 570170808Sdelphij struct tmpfs_node *node; 571170808Sdelphij 572176559Sattilio MPASS(VOP_ISLOCKED(dvp)); 573170808Sdelphij MPASS(cnp->cn_flags & HASBUF); 574170808Sdelphij MPASS(dvp != vp); /* XXX When can this be false? */ 575269167Skib node = VP_TO_TMPFS_NODE(vp); 576269167Skib 577170808Sdelphij /* Ensure that we do not overflow the maximum number of links imposed 578170808Sdelphij * by the system. */ 579170808Sdelphij MPASS(node->tn_links <= LINK_MAX); 580170808Sdelphij if (node->tn_links == LINK_MAX) { 581170808Sdelphij error = EMLINK; 582170808Sdelphij goto out; 583170808Sdelphij } 584170808Sdelphij 585170808Sdelphij /* We cannot create links of files marked immutable or append-only. */ 586170808Sdelphij if (node->tn_flags & (IMMUTABLE | APPEND)) { 587170808Sdelphij error = EPERM; 588170808Sdelphij goto out; 589170808Sdelphij } 590170808Sdelphij 591170808Sdelphij /* Allocate a new directory entry to represent the node. */ 592170808Sdelphij error = tmpfs_alloc_dirent(VFS_TO_TMPFS(vp->v_mount), node, 593170808Sdelphij cnp->cn_nameptr, cnp->cn_namelen, &de); 594170808Sdelphij if (error != 0) 595170808Sdelphij goto out; 596170808Sdelphij 597170808Sdelphij /* Insert the new directory entry into the appropriate directory. */ 598211598Sed if (cnp->cn_flags & ISWHITEOUT) 599211598Sed tmpfs_dir_whiteout_remove(dvp, cnp); 600170808Sdelphij tmpfs_dir_attach(dvp, de); 601170808Sdelphij 602170808Sdelphij /* vp link count has changed, so update node times. */ 603170808Sdelphij node->tn_status |= TMPFS_NODE_CHANGED; 604170808Sdelphij tmpfs_update(vp); 605170808Sdelphij 606170808Sdelphij error = 0; 607171070Sdelphij 608170808Sdelphijout: 609170808Sdelphij return error; 610170808Sdelphij} 611170808Sdelphij 612232960Sgleb/* 613232960Sgleb * We acquire all but fdvp locks using non-blocking acquisitions. If we 614232960Sgleb * fail to acquire any lock in the path we will drop all held locks, 615232960Sgleb * acquire the new lock in a blocking fashion, and then release it and 616232960Sgleb * restart the rename. This acquire/release step ensures that we do not 617232960Sgleb * spin on a lock waiting for release. On error release all vnode locks 618232960Sgleb * and decrement references the way tmpfs_rename() would do. 619232960Sgleb */ 620171069Sdelphijstatic int 621232960Sglebtmpfs_rename_relock(struct vnode *fdvp, struct vnode **fvpp, 622232960Sgleb struct vnode *tdvp, struct vnode **tvpp, 623232960Sgleb struct componentname *fcnp, struct componentname *tcnp) 624232960Sgleb{ 625232960Sgleb struct vnode *nvp; 626232960Sgleb struct mount *mp; 627232960Sgleb struct tmpfs_dirent *de; 628232960Sgleb int error, restarts = 0; 629232960Sgleb 630232960Sgleb VOP_UNLOCK(tdvp, 0); 631232960Sgleb if (*tvpp != NULL && *tvpp != tdvp) 632232960Sgleb VOP_UNLOCK(*tvpp, 0); 633232960Sgleb mp = fdvp->v_mount; 634232960Sgleb 635232960Sglebrelock: 636232960Sgleb restarts += 1; 637232960Sgleb error = vn_lock(fdvp, LK_EXCLUSIVE); 638232960Sgleb if (error) 639232960Sgleb goto releout; 640232960Sgleb if (vn_lock(tdvp, LK_EXCLUSIVE | LK_NOWAIT) != 0) { 641232960Sgleb VOP_UNLOCK(fdvp, 0); 642232960Sgleb error = vn_lock(tdvp, LK_EXCLUSIVE); 643232960Sgleb if (error) 644232960Sgleb goto releout; 645232960Sgleb VOP_UNLOCK(tdvp, 0); 646232960Sgleb goto relock; 647232960Sgleb } 648232960Sgleb /* 649232960Sgleb * Re-resolve fvp to be certain it still exists and fetch the 650232960Sgleb * correct vnode. 651232960Sgleb */ 652232960Sgleb de = tmpfs_dir_lookup(VP_TO_TMPFS_DIR(fdvp), NULL, fcnp); 653232960Sgleb if (de == NULL) { 654232960Sgleb VOP_UNLOCK(fdvp, 0); 655232960Sgleb VOP_UNLOCK(tdvp, 0); 656232960Sgleb if ((fcnp->cn_flags & ISDOTDOT) != 0 || 657232960Sgleb (fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.')) 658232960Sgleb error = EINVAL; 659232960Sgleb else 660232960Sgleb error = ENOENT; 661232960Sgleb goto releout; 662232960Sgleb } 663232960Sgleb error = tmpfs_alloc_vp(mp, de->td_node, LK_EXCLUSIVE | LK_NOWAIT, &nvp); 664232960Sgleb if (error != 0) { 665232960Sgleb VOP_UNLOCK(fdvp, 0); 666232960Sgleb VOP_UNLOCK(tdvp, 0); 667232960Sgleb if (error != EBUSY) 668232960Sgleb goto releout; 669232960Sgleb error = tmpfs_alloc_vp(mp, de->td_node, LK_EXCLUSIVE, &nvp); 670232960Sgleb if (error != 0) 671232960Sgleb goto releout; 672232960Sgleb VOP_UNLOCK(nvp, 0); 673232960Sgleb /* 674232960Sgleb * Concurrent rename race. 675232960Sgleb */ 676232960Sgleb if (nvp == tdvp) { 677232960Sgleb vrele(nvp); 678232960Sgleb error = EINVAL; 679232960Sgleb goto releout; 680232960Sgleb } 681232960Sgleb vrele(*fvpp); 682232960Sgleb *fvpp = nvp; 683232960Sgleb goto relock; 684232960Sgleb } 685232960Sgleb vrele(*fvpp); 686232960Sgleb *fvpp = nvp; 687232960Sgleb VOP_UNLOCK(*fvpp, 0); 688232960Sgleb /* 689232960Sgleb * Re-resolve tvp and acquire the vnode lock if present. 690232960Sgleb */ 691232960Sgleb de = tmpfs_dir_lookup(VP_TO_TMPFS_DIR(tdvp), NULL, tcnp); 692232960Sgleb /* 693232960Sgleb * If tvp disappeared we just carry on. 694232960Sgleb */ 695232960Sgleb if (de == NULL && *tvpp != NULL) { 696232960Sgleb vrele(*tvpp); 697232960Sgleb *tvpp = NULL; 698232960Sgleb } 699232960Sgleb /* 700232960Sgleb * Get the tvp ino if the lookup succeeded. We may have to restart 701232960Sgleb * if the non-blocking acquire fails. 702232960Sgleb */ 703232960Sgleb if (de != NULL) { 704232960Sgleb nvp = NULL; 705232960Sgleb error = tmpfs_alloc_vp(mp, de->td_node, 706232960Sgleb LK_EXCLUSIVE | LK_NOWAIT, &nvp); 707232960Sgleb if (*tvpp != NULL) 708232960Sgleb vrele(*tvpp); 709232960Sgleb *tvpp = nvp; 710232960Sgleb if (error != 0) { 711232960Sgleb VOP_UNLOCK(fdvp, 0); 712232960Sgleb VOP_UNLOCK(tdvp, 0); 713232960Sgleb if (error != EBUSY) 714232960Sgleb goto releout; 715232960Sgleb error = tmpfs_alloc_vp(mp, de->td_node, LK_EXCLUSIVE, 716232960Sgleb &nvp); 717232960Sgleb if (error != 0) 718232960Sgleb goto releout; 719232960Sgleb VOP_UNLOCK(nvp, 0); 720232960Sgleb /* 721232960Sgleb * fdvp contains fvp, thus tvp (=fdvp) is not empty. 722232960Sgleb */ 723232960Sgleb if (nvp == fdvp) { 724232960Sgleb error = ENOTEMPTY; 725232960Sgleb goto releout; 726232960Sgleb } 727232960Sgleb goto relock; 728232960Sgleb } 729232960Sgleb } 730232960Sgleb tmpfs_rename_restarts += restarts; 731232960Sgleb 732232960Sgleb return (0); 733232960Sgleb 734232960Sglebreleout: 735232960Sgleb vrele(fdvp); 736232960Sgleb vrele(*fvpp); 737232960Sgleb vrele(tdvp); 738232960Sgleb if (*tvpp != NULL) 739232960Sgleb vrele(*tvpp); 740232960Sgleb tmpfs_rename_restarts += restarts; 741232960Sgleb 742232960Sgleb return (error); 743232960Sgleb} 744232960Sgleb 745232960Sglebstatic int 746170808Sdelphijtmpfs_rename(struct vop_rename_args *v) 747170808Sdelphij{ 748170808Sdelphij struct vnode *fdvp = v->a_fdvp; 749170808Sdelphij struct vnode *fvp = v->a_fvp; 750170808Sdelphij struct componentname *fcnp = v->a_fcnp; 751170808Sdelphij struct vnode *tdvp = v->a_tdvp; 752170808Sdelphij struct vnode *tvp = v->a_tvp; 753170808Sdelphij struct componentname *tcnp = v->a_tcnp; 754232960Sgleb struct mount *mp = NULL; 755170808Sdelphij 756170808Sdelphij char *newname; 757170808Sdelphij int error; 758170808Sdelphij struct tmpfs_dirent *de; 759197953Sdelphij struct tmpfs_mount *tmp; 760170808Sdelphij struct tmpfs_node *fdnode; 761170808Sdelphij struct tmpfs_node *fnode; 762171799Sdelphij struct tmpfs_node *tnode; 763170808Sdelphij struct tmpfs_node *tdnode; 764170808Sdelphij 765176559Sattilio MPASS(VOP_ISLOCKED(tdvp)); 766176559Sattilio MPASS(IMPLIES(tvp != NULL, VOP_ISLOCKED(tvp))); 767170808Sdelphij MPASS(fcnp->cn_flags & HASBUF); 768170808Sdelphij MPASS(tcnp->cn_flags & HASBUF); 769170808Sdelphij 770170808Sdelphij /* Disallow cross-device renames. 771170808Sdelphij * XXX Why isn't this done by the caller? */ 772170808Sdelphij if (fvp->v_mount != tdvp->v_mount || 773170808Sdelphij (tvp != NULL && fvp->v_mount != tvp->v_mount)) { 774170808Sdelphij error = EXDEV; 775170808Sdelphij goto out; 776170808Sdelphij } 777170808Sdelphij 778170808Sdelphij /* If source and target are the same file, there is nothing to do. */ 779170808Sdelphij if (fvp == tvp) { 780170808Sdelphij error = 0; 781170808Sdelphij goto out; 782170808Sdelphij } 783170808Sdelphij 784173725Sdelphij /* If we need to move the directory between entries, lock the 785173725Sdelphij * source so that we can safely operate on it. */ 786232960Sgleb if (fdvp != tdvp && fdvp != tvp) { 787232960Sgleb if (vn_lock(fdvp, LK_EXCLUSIVE | LK_NOWAIT) != 0) { 788232960Sgleb mp = tdvp->v_mount; 789232960Sgleb error = vfs_busy(mp, 0); 790232960Sgleb if (error != 0) { 791232960Sgleb mp = NULL; 792232960Sgleb goto out; 793232960Sgleb } 794232960Sgleb error = tmpfs_rename_relock(fdvp, &fvp, tdvp, &tvp, 795232960Sgleb fcnp, tcnp); 796232960Sgleb if (error != 0) { 797232960Sgleb vfs_unbusy(mp); 798232960Sgleb return (error); 799232960Sgleb } 800232960Sgleb ASSERT_VOP_ELOCKED(fdvp, 801232960Sgleb "tmpfs_rename: fdvp not locked"); 802232960Sgleb ASSERT_VOP_ELOCKED(tdvp, 803232960Sgleb "tmpfs_rename: tdvp not locked"); 804232960Sgleb if (tvp != NULL) 805232960Sgleb ASSERT_VOP_ELOCKED(tvp, 806232960Sgleb "tmpfs_rename: tvp not locked"); 807232960Sgleb if (fvp == tvp) { 808232960Sgleb error = 0; 809232960Sgleb goto out_locked; 810232960Sgleb } 811232960Sgleb } 812232960Sgleb } 813232960Sgleb 814232960Sgleb tmp = VFS_TO_TMPFS(tdvp->v_mount); 815232960Sgleb tdnode = VP_TO_TMPFS_DIR(tdvp); 816232960Sgleb tnode = (tvp == NULL) ? NULL : VP_TO_TMPFS_NODE(tvp); 817173725Sdelphij fdnode = VP_TO_TMPFS_DIR(fdvp); 818173725Sdelphij fnode = VP_TO_TMPFS_NODE(fvp); 819188318Skib de = tmpfs_dir_lookup(fdnode, fnode, fcnp); 820173725Sdelphij 821212305Sivoras /* Entry can disappear before we lock fdvp, 822212305Sivoras * also avoid manipulating '.' and '..' entries. */ 823170808Sdelphij if (de == NULL) { 824212305Sivoras if ((fcnp->cn_flags & ISDOTDOT) != 0 || 825212305Sivoras (fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.')) 826212305Sivoras error = EINVAL; 827212305Sivoras else 828212305Sivoras error = ENOENT; 829173725Sdelphij goto out_locked; 830170808Sdelphij } 831170808Sdelphij MPASS(de->td_node == fnode); 832170808Sdelphij 833171070Sdelphij /* If re-naming a directory to another preexisting directory 834170808Sdelphij * ensure that the target directory is empty so that its 835171070Sdelphij * removal causes no side effects. 836170808Sdelphij * Kern_rename gurantees the destination to be a directory 837170808Sdelphij * if the source is one. */ 838170808Sdelphij if (tvp != NULL) { 839171799Sdelphij MPASS(tnode != NULL); 840171070Sdelphij 841170808Sdelphij if ((tnode->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) || 842170808Sdelphij (tdnode->tn_flags & (APPEND | IMMUTABLE))) { 843170808Sdelphij error = EPERM; 844173725Sdelphij goto out_locked; 845170808Sdelphij } 846170808Sdelphij 847171799Sdelphij if (fnode->tn_type == VDIR && tnode->tn_type == VDIR) { 848171799Sdelphij if (tnode->tn_size > 0) { 849171799Sdelphij error = ENOTEMPTY; 850173725Sdelphij goto out_locked; 851171799Sdelphij } 852171799Sdelphij } else if (fnode->tn_type == VDIR && tnode->tn_type != VDIR) { 853171799Sdelphij error = ENOTDIR; 854173725Sdelphij goto out_locked; 855171799Sdelphij } else if (fnode->tn_type != VDIR && tnode->tn_type == VDIR) { 856171799Sdelphij error = EISDIR; 857173725Sdelphij goto out_locked; 858171799Sdelphij } else { 859171799Sdelphij MPASS(fnode->tn_type != VDIR && 860171799Sdelphij tnode->tn_type != VDIR); 861170808Sdelphij } 862170808Sdelphij } 863170808Sdelphij 864170808Sdelphij if ((fnode->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) 865170808Sdelphij || (fdnode->tn_flags & (APPEND | IMMUTABLE))) { 866170808Sdelphij error = EPERM; 867170808Sdelphij goto out_locked; 868170808Sdelphij } 869170808Sdelphij 870170808Sdelphij /* Ensure that we have enough memory to hold the new name, if it 871170808Sdelphij * has to be changed. */ 872170808Sdelphij if (fcnp->cn_namelen != tcnp->cn_namelen || 873183299Sobrien bcmp(fcnp->cn_nameptr, tcnp->cn_nameptr, fcnp->cn_namelen) != 0) { 874171087Sdelphij newname = malloc(tcnp->cn_namelen, M_TMPFSNAME, M_WAITOK); 875170808Sdelphij } else 876170808Sdelphij newname = NULL; 877170808Sdelphij 878170808Sdelphij /* If the node is being moved to another directory, we have to do 879170808Sdelphij * the move. */ 880170808Sdelphij if (fdnode != tdnode) { 881170808Sdelphij /* In case we are moving a directory, we have to adjust its 882170808Sdelphij * parent to point to the new parent. */ 883170808Sdelphij if (de->td_node->tn_type == VDIR) { 884170808Sdelphij struct tmpfs_node *n; 885170808Sdelphij 886170808Sdelphij /* Ensure the target directory is not a child of the 887170808Sdelphij * directory being moved. Otherwise, we'd end up 888170808Sdelphij * with stale nodes. */ 889170808Sdelphij n = tdnode; 890197953Sdelphij /* TMPFS_LOCK garanties that no nodes are freed while 891197953Sdelphij * traversing the list. Nodes can only be marked as 892197953Sdelphij * removed: tn_parent == NULL. */ 893197953Sdelphij TMPFS_LOCK(tmp); 894197953Sdelphij TMPFS_NODE_LOCK(n); 895170808Sdelphij while (n != n->tn_dir.tn_parent) { 896197953Sdelphij struct tmpfs_node *parent; 897197953Sdelphij 898170808Sdelphij if (n == fnode) { 899197953Sdelphij TMPFS_NODE_UNLOCK(n); 900197953Sdelphij TMPFS_UNLOCK(tmp); 901170808Sdelphij error = EINVAL; 902170808Sdelphij if (newname != NULL) 903171087Sdelphij free(newname, M_TMPFSNAME); 904170808Sdelphij goto out_locked; 905170808Sdelphij } 906197953Sdelphij parent = n->tn_dir.tn_parent; 907197953Sdelphij TMPFS_NODE_UNLOCK(n); 908197953Sdelphij if (parent == NULL) { 909197953Sdelphij n = NULL; 910197953Sdelphij break; 911197953Sdelphij } 912197953Sdelphij TMPFS_NODE_LOCK(parent); 913197953Sdelphij if (parent->tn_dir.tn_parent == NULL) { 914197953Sdelphij TMPFS_NODE_UNLOCK(parent); 915197953Sdelphij n = NULL; 916197953Sdelphij break; 917197953Sdelphij } 918197953Sdelphij n = parent; 919170808Sdelphij } 920197953Sdelphij TMPFS_UNLOCK(tmp); 921197953Sdelphij if (n == NULL) { 922197953Sdelphij error = EINVAL; 923197953Sdelphij if (newname != NULL) 924197953Sdelphij free(newname, M_TMPFSNAME); 925197953Sdelphij goto out_locked; 926197953Sdelphij } 927197953Sdelphij TMPFS_NODE_UNLOCK(n); 928170808Sdelphij 929170808Sdelphij /* Adjust the parent pointer. */ 930170808Sdelphij TMPFS_VALIDATE_DIR(fnode); 931197953Sdelphij TMPFS_NODE_LOCK(de->td_node); 932170808Sdelphij de->td_node->tn_dir.tn_parent = tdnode; 933197953Sdelphij TMPFS_NODE_UNLOCK(de->td_node); 934170808Sdelphij 935170808Sdelphij /* As a result of changing the target of the '..' 936170808Sdelphij * entry, the link count of the source and target 937170808Sdelphij * directories has to be adjusted. */ 938197953Sdelphij TMPFS_NODE_LOCK(tdnode); 939197953Sdelphij TMPFS_ASSERT_LOCKED(tdnode); 940197953Sdelphij tdnode->tn_links++; 941197953Sdelphij TMPFS_NODE_UNLOCK(tdnode); 942197953Sdelphij 943197953Sdelphij TMPFS_NODE_LOCK(fdnode); 944197953Sdelphij TMPFS_ASSERT_LOCKED(fdnode); 945170808Sdelphij fdnode->tn_links--; 946197953Sdelphij TMPFS_NODE_UNLOCK(fdnode); 947170808Sdelphij } 948170808Sdelphij } 949170808Sdelphij 950245115Sgleb /* Do the move: just remove the entry from the source directory 951245115Sgleb * and insert it into the target one. */ 952245115Sgleb tmpfs_dir_detach(fdvp, de); 953245115Sgleb 954245115Sgleb if (fcnp->cn_flags & DOWHITEOUT) 955245115Sgleb tmpfs_dir_whiteout_add(fdvp, fcnp); 956245115Sgleb if (tcnp->cn_flags & ISWHITEOUT) 957245115Sgleb tmpfs_dir_whiteout_remove(tdvp, tcnp); 958245115Sgleb 959170808Sdelphij /* If the name has changed, we need to make it effective by changing 960170808Sdelphij * it in the directory entry. */ 961170808Sdelphij if (newname != NULL) { 962170808Sdelphij MPASS(tcnp->cn_namelen <= MAXNAMLEN); 963170808Sdelphij 964245115Sgleb free(de->ud.td_name, M_TMPFSNAME); 965245115Sgleb de->ud.td_name = newname; 966245115Sgleb tmpfs_dirent_init(de, tcnp->cn_nameptr, tcnp->cn_namelen); 967170808Sdelphij 968170808Sdelphij fnode->tn_status |= TMPFS_NODE_CHANGED; 969170808Sdelphij tdnode->tn_status |= TMPFS_NODE_MODIFIED; 970170808Sdelphij } 971170808Sdelphij 972170808Sdelphij /* If we are overwriting an entry, we have to remove the old one 973170808Sdelphij * from the target directory. */ 974170808Sdelphij if (tvp != NULL) { 975245115Sgleb struct tmpfs_dirent *tde; 976245115Sgleb 977170808Sdelphij /* Remove the old entry from the target directory. */ 978245115Sgleb tde = tmpfs_dir_lookup(tdnode, tnode, tcnp); 979245115Sgleb tmpfs_dir_detach(tdvp, tde); 980170808Sdelphij 981170808Sdelphij /* Free the directory entry we just deleted. Note that the 982170808Sdelphij * node referred by it will not be removed until the vnode is 983170808Sdelphij * really reclaimed. */ 984245115Sgleb tmpfs_free_dirent(VFS_TO_TMPFS(tvp->v_mount), tde); 985170808Sdelphij } 986245115Sgleb 987245115Sgleb tmpfs_dir_attach(tdvp, de); 988245115Sgleb 989226987Spho cache_purge(fvp); 990232401Sjhb if (tvp != NULL) 991232401Sjhb cache_purge(tvp); 992248422Skib cache_purge_negative(tdvp); 993170808Sdelphij 994170808Sdelphij error = 0; 995170808Sdelphij 996170808Sdelphijout_locked: 997227822Sivoras if (fdvp != tdvp && fdvp != tvp) 998175294Sattilio VOP_UNLOCK(fdvp, 0); 999170808Sdelphij 1000170808Sdelphijout: 1001170808Sdelphij /* Release target nodes. */ 1002170808Sdelphij /* XXX: I don't understand when tdvp can be the same as tvp, but 1003170808Sdelphij * other code takes care of this... */ 1004170808Sdelphij if (tdvp == tvp) 1005170808Sdelphij vrele(tdvp); 1006170808Sdelphij else 1007170808Sdelphij vput(tdvp); 1008170808Sdelphij if (tvp != NULL) 1009170808Sdelphij vput(tvp); 1010170808Sdelphij 1011170808Sdelphij /* Release source nodes. */ 1012170808Sdelphij vrele(fdvp); 1013170808Sdelphij vrele(fvp); 1014170808Sdelphij 1015232960Sgleb if (mp != NULL) 1016232960Sgleb vfs_unbusy(mp); 1017232960Sgleb 1018170808Sdelphij return error; 1019170808Sdelphij} 1020170808Sdelphij 1021171069Sdelphijstatic int 1022170808Sdelphijtmpfs_mkdir(struct vop_mkdir_args *v) 1023170808Sdelphij{ 1024170808Sdelphij struct vnode *dvp = v->a_dvp; 1025170808Sdelphij struct vnode **vpp = v->a_vpp; 1026170808Sdelphij struct componentname *cnp = v->a_cnp; 1027170808Sdelphij struct vattr *vap = v->a_vap; 1028170808Sdelphij 1029170808Sdelphij MPASS(vap->va_type == VDIR); 1030170808Sdelphij 1031170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL); 1032170808Sdelphij} 1033170808Sdelphij 1034171069Sdelphijstatic int 1035170808Sdelphijtmpfs_rmdir(struct vop_rmdir_args *v) 1036170808Sdelphij{ 1037170808Sdelphij struct vnode *dvp = v->a_dvp; 1038170808Sdelphij struct vnode *vp = v->a_vp; 1039170808Sdelphij 1040170808Sdelphij int error; 1041170808Sdelphij struct tmpfs_dirent *de; 1042170808Sdelphij struct tmpfs_mount *tmp; 1043170808Sdelphij struct tmpfs_node *dnode; 1044170808Sdelphij struct tmpfs_node *node; 1045170808Sdelphij 1046176559Sattilio MPASS(VOP_ISLOCKED(dvp)); 1047176559Sattilio MPASS(VOP_ISLOCKED(vp)); 1048170808Sdelphij 1049170808Sdelphij tmp = VFS_TO_TMPFS(dvp->v_mount); 1050170808Sdelphij dnode = VP_TO_TMPFS_DIR(dvp); 1051170808Sdelphij node = VP_TO_TMPFS_DIR(vp); 1052170808Sdelphij 1053171070Sdelphij /* Directories with more than two entries ('.' and '..') cannot be 1054171070Sdelphij * removed. */ 1055171070Sdelphij if (node->tn_size > 0) { 1056171070Sdelphij error = ENOTEMPTY; 1057171070Sdelphij goto out; 1058171070Sdelphij } 1059170808Sdelphij 1060170808Sdelphij if ((dnode->tn_flags & APPEND) 1061170808Sdelphij || (node->tn_flags & (NOUNLINK | IMMUTABLE | APPEND))) { 1062170808Sdelphij error = EPERM; 1063170808Sdelphij goto out; 1064170808Sdelphij } 1065170808Sdelphij 1066171070Sdelphij /* This invariant holds only if we are not trying to remove "..". 1067171070Sdelphij * We checked for that above so this is safe now. */ 1068170808Sdelphij MPASS(node->tn_dir.tn_parent == dnode); 1069170808Sdelphij 1070170808Sdelphij /* Get the directory entry associated with node (vp). This was 1071170808Sdelphij * filled by tmpfs_lookup while looking up the entry. */ 1072188318Skib de = tmpfs_dir_lookup(dnode, node, v->a_cnp); 1073170808Sdelphij MPASS(TMPFS_DIRENT_MATCHES(de, 1074170808Sdelphij v->a_cnp->cn_nameptr, 1075170808Sdelphij v->a_cnp->cn_namelen)); 1076170808Sdelphij 1077170808Sdelphij /* Check flags to see if we are allowed to remove the directory. */ 1078170808Sdelphij if (dnode->tn_flags & APPEND 1079170808Sdelphij || node->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) { 1080170808Sdelphij error = EPERM; 1081170808Sdelphij goto out; 1082170808Sdelphij } 1083170808Sdelphij 1084197953Sdelphij 1085170808Sdelphij /* Detach the directory entry from the directory (dnode). */ 1086170808Sdelphij tmpfs_dir_detach(dvp, de); 1087211598Sed if (v->a_cnp->cn_flags & DOWHITEOUT) 1088211598Sed tmpfs_dir_whiteout_add(dvp, v->a_cnp); 1089170808Sdelphij 1090197953Sdelphij /* No vnode should be allocated for this entry from this point */ 1091197953Sdelphij TMPFS_NODE_LOCK(node); 1092197953Sdelphij TMPFS_ASSERT_ELOCKED(node); 1093170808Sdelphij node->tn_links--; 1094197953Sdelphij node->tn_dir.tn_parent = NULL; 1095170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED | TMPFS_NODE_CHANGED | \ 1096170808Sdelphij TMPFS_NODE_MODIFIED; 1097197953Sdelphij 1098197953Sdelphij TMPFS_NODE_UNLOCK(node); 1099197953Sdelphij 1100197953Sdelphij TMPFS_NODE_LOCK(dnode); 1101197953Sdelphij TMPFS_ASSERT_ELOCKED(dnode); 1102197953Sdelphij dnode->tn_links--; 1103197953Sdelphij dnode->tn_status |= TMPFS_NODE_ACCESSED | \ 1104170808Sdelphij TMPFS_NODE_CHANGED | TMPFS_NODE_MODIFIED; 1105197953Sdelphij TMPFS_NODE_UNLOCK(dnode); 1106170808Sdelphij 1107171070Sdelphij cache_purge(dvp); 1108170808Sdelphij cache_purge(vp); 1109170808Sdelphij 1110170808Sdelphij /* Free the directory entry we just deleted. Note that the node 1111170808Sdelphij * referred by it will not be removed until the vnode is really 1112170808Sdelphij * reclaimed. */ 1113245115Sgleb tmpfs_free_dirent(tmp, de); 1114170808Sdelphij 1115170808Sdelphij /* Release the deleted vnode (will destroy the node, notify 1116170808Sdelphij * interested parties and clean it from the cache). */ 1117170808Sdelphij 1118170808Sdelphij dnode->tn_status |= TMPFS_NODE_CHANGED; 1119170808Sdelphij tmpfs_update(dvp); 1120170808Sdelphij 1121170808Sdelphij error = 0; 1122170808Sdelphij 1123170808Sdelphijout: 1124170808Sdelphij return error; 1125170808Sdelphij} 1126170808Sdelphij 1127171069Sdelphijstatic int 1128170808Sdelphijtmpfs_symlink(struct vop_symlink_args *v) 1129170808Sdelphij{ 1130170808Sdelphij struct vnode *dvp = v->a_dvp; 1131170808Sdelphij struct vnode **vpp = v->a_vpp; 1132170808Sdelphij struct componentname *cnp = v->a_cnp; 1133170808Sdelphij struct vattr *vap = v->a_vap; 1134170808Sdelphij char *target = v->a_target; 1135170808Sdelphij 1136170808Sdelphij#ifdef notyet /* XXX FreeBSD BUG: kern_symlink is not setting VLNK */ 1137170808Sdelphij MPASS(vap->va_type == VLNK); 1138170808Sdelphij#else 1139170808Sdelphij vap->va_type = VLNK; 1140170808Sdelphij#endif 1141170808Sdelphij 1142170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, target); 1143170808Sdelphij} 1144170808Sdelphij 1145171069Sdelphijstatic int 1146170808Sdelphijtmpfs_readdir(struct vop_readdir_args *v) 1147170808Sdelphij{ 1148170808Sdelphij struct vnode *vp = v->a_vp; 1149170808Sdelphij struct uio *uio = v->a_uio; 1150170808Sdelphij int *eofflag = v->a_eofflag; 1151170808Sdelphij u_long **cookies = v->a_cookies; 1152170808Sdelphij int *ncookies = v->a_ncookies; 1153170808Sdelphij 1154170808Sdelphij int error; 1155245115Sgleb ssize_t startresid; 1156263946Sbdrewery int maxcookies; 1157170808Sdelphij struct tmpfs_node *node; 1158170808Sdelphij 1159170808Sdelphij /* This operation only makes sense on directory nodes. */ 1160171802Sdelphij if (vp->v_type != VDIR) 1161171802Sdelphij return ENOTDIR; 1162170808Sdelphij 1163263946Sbdrewery maxcookies = 0; 1164170808Sdelphij node = VP_TO_TMPFS_DIR(vp); 1165170808Sdelphij 1166245115Sgleb startresid = uio->uio_resid; 1167170808Sdelphij 1168263946Sbdrewery /* Allocate cookies for NFS and compat modules. */ 1169245115Sgleb if (cookies != NULL && ncookies != NULL) { 1170263946Sbdrewery maxcookies = howmany(node->tn_size, 1171263946Sbdrewery sizeof(struct tmpfs_dirent)) + 2; 1172263946Sbdrewery *cookies = malloc(maxcookies * sizeof(**cookies), M_TEMP, 1173263946Sbdrewery M_WAITOK); 1174245115Sgleb *ncookies = 0; 1175171862Sdelphij } 1176171862Sdelphij 1177263946Sbdrewery if (cookies == NULL) 1178245115Sgleb error = tmpfs_dir_getdents(node, uio, 0, NULL, NULL); 1179245115Sgleb else 1180263946Sbdrewery error = tmpfs_dir_getdents(node, uio, maxcookies, *cookies, 1181263946Sbdrewery ncookies); 1182170808Sdelphij 1183263946Sbdrewery /* Buffer was filled without hitting EOF. */ 1184245115Sgleb if (error == EJUSTRETURN) 1185245115Sgleb error = (uio->uio_resid != startresid) ? 0 : EINVAL; 1186171862Sdelphij 1187263946Sbdrewery if (error != 0 && cookies != NULL) 1188245115Sgleb free(*cookies, M_TEMP); 1189171862Sdelphij 1190170808Sdelphij if (eofflag != NULL) 1191170808Sdelphij *eofflag = 1192170808Sdelphij (error == 0 && uio->uio_offset == TMPFS_DIRCOOKIE_EOF); 1193170808Sdelphij 1194170808Sdelphij return error; 1195170808Sdelphij} 1196170808Sdelphij 1197171069Sdelphijstatic int 1198170808Sdelphijtmpfs_readlink(struct vop_readlink_args *v) 1199170808Sdelphij{ 1200170808Sdelphij struct vnode *vp = v->a_vp; 1201170808Sdelphij struct uio *uio = v->a_uio; 1202170808Sdelphij 1203170808Sdelphij int error; 1204170808Sdelphij struct tmpfs_node *node; 1205170808Sdelphij 1206170808Sdelphij MPASS(uio->uio_offset == 0); 1207170808Sdelphij MPASS(vp->v_type == VLNK); 1208170808Sdelphij 1209170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1210170808Sdelphij 1211170808Sdelphij error = uiomove(node->tn_link, MIN(node->tn_size, uio->uio_resid), 1212170808Sdelphij uio); 1213170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED; 1214170808Sdelphij 1215170808Sdelphij return error; 1216170808Sdelphij} 1217170808Sdelphij 1218171069Sdelphijstatic int 1219170808Sdelphijtmpfs_inactive(struct vop_inactive_args *v) 1220170808Sdelphij{ 1221170808Sdelphij struct vnode *vp = v->a_vp; 1222170808Sdelphij 1223170808Sdelphij struct tmpfs_node *node; 1224170808Sdelphij 1225170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1226170808Sdelphij 1227170808Sdelphij if (node->tn_links == 0) 1228234607Strasz vrecycle(vp); 1229170808Sdelphij 1230170808Sdelphij return 0; 1231170808Sdelphij} 1232170808Sdelphij 1233170808Sdelphijint 1234170808Sdelphijtmpfs_reclaim(struct vop_reclaim_args *v) 1235170808Sdelphij{ 1236170808Sdelphij struct vnode *vp = v->a_vp; 1237170808Sdelphij 1238170808Sdelphij struct tmpfs_mount *tmp; 1239170808Sdelphij struct tmpfs_node *node; 1240170808Sdelphij 1241170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1242170808Sdelphij tmp = VFS_TO_TMPFS(vp->v_mount); 1243171070Sdelphij 1244250189Skib if (vp->v_type == VREG) 1245250189Skib tmpfs_destroy_vobject(vp, node->tn_reg.tn_aobj); 1246250190Skib else 1247250190Skib vnode_destroy_vobject(vp); 1248250030Skib vp->v_object = NULL; 1249170808Sdelphij cache_purge(vp); 1250197953Sdelphij 1251197953Sdelphij TMPFS_NODE_LOCK(node); 1252197953Sdelphij TMPFS_ASSERT_ELOCKED(node); 1253170808Sdelphij tmpfs_free_vp(vp); 1254170808Sdelphij 1255170808Sdelphij /* If the node referenced by this vnode was deleted by the user, 1256170808Sdelphij * we must free its associated data structures (now that the vnode 1257170808Sdelphij * is being reclaimed). */ 1258197953Sdelphij if (node->tn_links == 0 && 1259197953Sdelphij (node->tn_vpstate & TMPFS_VNODE_ALLOCATING) == 0) { 1260197953Sdelphij node->tn_vpstate = TMPFS_VNODE_DOOMED; 1261197953Sdelphij TMPFS_NODE_UNLOCK(node); 1262170808Sdelphij tmpfs_free_node(tmp, node); 1263197953Sdelphij } else 1264197953Sdelphij TMPFS_NODE_UNLOCK(node); 1265170808Sdelphij 1266170808Sdelphij MPASS(vp->v_data == NULL); 1267170808Sdelphij return 0; 1268170808Sdelphij} 1269170808Sdelphij 1270171069Sdelphijstatic int 1271170808Sdelphijtmpfs_print(struct vop_print_args *v) 1272170808Sdelphij{ 1273170808Sdelphij struct vnode *vp = v->a_vp; 1274170808Sdelphij 1275170808Sdelphij struct tmpfs_node *node; 1276170808Sdelphij 1277170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1278170808Sdelphij 1279248610Spjd printf("tag VT_TMPFS, tmpfs_node %p, flags 0x%lx, links %d\n", 1280170808Sdelphij node, node->tn_flags, node->tn_links); 1281231669Stijl printf("\tmode 0%o, owner %d, group %d, size %jd, status 0x%x\n", 1282170808Sdelphij node->tn_mode, node->tn_uid, node->tn_gid, 1283231669Stijl (intmax_t)node->tn_size, node->tn_status); 1284170808Sdelphij 1285170808Sdelphij if (vp->v_type == VFIFO) 1286170808Sdelphij fifo_printinfo(vp); 1287170808Sdelphij 1288170808Sdelphij printf("\n"); 1289170808Sdelphij 1290170808Sdelphij return 0; 1291170808Sdelphij} 1292170808Sdelphij 1293171069Sdelphijstatic int 1294170808Sdelphijtmpfs_pathconf(struct vop_pathconf_args *v) 1295170808Sdelphij{ 1296170808Sdelphij int name = v->a_name; 1297170808Sdelphij register_t *retval = v->a_retval; 1298170808Sdelphij 1299170808Sdelphij int error; 1300170808Sdelphij 1301170808Sdelphij error = 0; 1302170808Sdelphij 1303170808Sdelphij switch (name) { 1304170808Sdelphij case _PC_LINK_MAX: 1305170808Sdelphij *retval = LINK_MAX; 1306170808Sdelphij break; 1307170808Sdelphij 1308170808Sdelphij case _PC_NAME_MAX: 1309170808Sdelphij *retval = NAME_MAX; 1310170808Sdelphij break; 1311170808Sdelphij 1312170808Sdelphij case _PC_PATH_MAX: 1313170808Sdelphij *retval = PATH_MAX; 1314170808Sdelphij break; 1315170808Sdelphij 1316170808Sdelphij case _PC_PIPE_BUF: 1317170808Sdelphij *retval = PIPE_BUF; 1318170808Sdelphij break; 1319170808Sdelphij 1320170808Sdelphij case _PC_CHOWN_RESTRICTED: 1321170808Sdelphij *retval = 1; 1322170808Sdelphij break; 1323170808Sdelphij 1324170808Sdelphij case _PC_NO_TRUNC: 1325170808Sdelphij *retval = 1; 1326170808Sdelphij break; 1327170808Sdelphij 1328170808Sdelphij case _PC_SYNC_IO: 1329170808Sdelphij *retval = 1; 1330170808Sdelphij break; 1331170808Sdelphij 1332170808Sdelphij case _PC_FILESIZEBITS: 1333170808Sdelphij *retval = 0; /* XXX Don't know which value should I return. */ 1334170808Sdelphij break; 1335170808Sdelphij 1336170808Sdelphij default: 1337170808Sdelphij error = EINVAL; 1338170808Sdelphij } 1339170808Sdelphij 1340170808Sdelphij return error; 1341170808Sdelphij} 1342170808Sdelphij 1343171069Sdelphijstatic int 1344170808Sdelphijtmpfs_vptofh(struct vop_vptofh_args *ap) 1345170808Sdelphij{ 1346170808Sdelphij struct tmpfs_fid *tfhp; 1347170808Sdelphij struct tmpfs_node *node; 1348170808Sdelphij 1349170808Sdelphij tfhp = (struct tmpfs_fid *)ap->a_fhp; 1350170808Sdelphij node = VP_TO_TMPFS_NODE(ap->a_vp); 1351170808Sdelphij 1352170808Sdelphij tfhp->tf_len = sizeof(struct tmpfs_fid); 1353170808Sdelphij tfhp->tf_id = node->tn_id; 1354170808Sdelphij tfhp->tf_gen = node->tn_gen; 1355171070Sdelphij 1356170808Sdelphij return (0); 1357170808Sdelphij} 1358171069Sdelphij 1359211598Sedstatic int 1360211598Sedtmpfs_whiteout(struct vop_whiteout_args *ap) 1361211598Sed{ 1362211598Sed struct vnode *dvp = ap->a_dvp; 1363211598Sed struct componentname *cnp = ap->a_cnp; 1364211598Sed struct tmpfs_dirent *de; 1365211598Sed 1366211598Sed switch (ap->a_flags) { 1367211598Sed case LOOKUP: 1368211598Sed return (0); 1369211598Sed case CREATE: 1370211598Sed de = tmpfs_dir_lookup(VP_TO_TMPFS_DIR(dvp), NULL, cnp); 1371211598Sed if (de != NULL) 1372211598Sed return (de->td_node == NULL ? 0 : EEXIST); 1373211598Sed return (tmpfs_dir_whiteout_add(dvp, cnp)); 1374211598Sed case DELETE: 1375211598Sed tmpfs_dir_whiteout_remove(dvp, cnp); 1376211598Sed return (0); 1377211598Sed default: 1378211598Sed panic("tmpfs_whiteout: unknown op"); 1379211598Sed } 1380211598Sed} 1381211598Sed 1382171069Sdelphij/* 1383171069Sdelphij * vnode operations vector used for files stored in a tmpfs file system. 1384171069Sdelphij */ 1385171069Sdelphijstruct vop_vector tmpfs_vnodeop_entries = { 1386171069Sdelphij .vop_default = &default_vnodeops, 1387171069Sdelphij .vop_lookup = vfs_cache_lookup, 1388171069Sdelphij .vop_cachedlookup = tmpfs_lookup, 1389171069Sdelphij .vop_create = tmpfs_create, 1390171069Sdelphij .vop_mknod = tmpfs_mknod, 1391171069Sdelphij .vop_open = tmpfs_open, 1392171069Sdelphij .vop_close = tmpfs_close, 1393171069Sdelphij .vop_access = tmpfs_access, 1394171069Sdelphij .vop_getattr = tmpfs_getattr, 1395171069Sdelphij .vop_setattr = tmpfs_setattr, 1396171069Sdelphij .vop_read = tmpfs_read, 1397171069Sdelphij .vop_write = tmpfs_write, 1398171069Sdelphij .vop_fsync = tmpfs_fsync, 1399171069Sdelphij .vop_remove = tmpfs_remove, 1400171069Sdelphij .vop_link = tmpfs_link, 1401171069Sdelphij .vop_rename = tmpfs_rename, 1402171069Sdelphij .vop_mkdir = tmpfs_mkdir, 1403171069Sdelphij .vop_rmdir = tmpfs_rmdir, 1404171069Sdelphij .vop_symlink = tmpfs_symlink, 1405171069Sdelphij .vop_readdir = tmpfs_readdir, 1406171069Sdelphij .vop_readlink = tmpfs_readlink, 1407171069Sdelphij .vop_inactive = tmpfs_inactive, 1408171069Sdelphij .vop_reclaim = tmpfs_reclaim, 1409171069Sdelphij .vop_print = tmpfs_print, 1410171069Sdelphij .vop_pathconf = tmpfs_pathconf, 1411171069Sdelphij .vop_vptofh = tmpfs_vptofh, 1412211598Sed .vop_whiteout = tmpfs_whiteout, 1413171069Sdelphij .vop_bmap = VOP_EOPNOTSUPP, 1414171069Sdelphij}; 1415171069Sdelphij 1416