tmpfs_vnops.c revision 188921
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 188921 2009-02-22 18:15:17Z 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> 55170808Sdelphij#include <sys/sched.h> 56170808Sdelphij#include <sys/sf_buf.h> 57170808Sdelphij#include <machine/_inttypes.h> 58170808Sdelphij 59170808Sdelphij#include <fs/fifofs/fifo.h> 60170808Sdelphij#include <fs/tmpfs/tmpfs_vnops.h> 61170808Sdelphij#include <fs/tmpfs/tmpfs.h> 62170808Sdelphij 63170808Sdelphij/* --------------------------------------------------------------------- */ 64170808Sdelphij 65171069Sdelphijstatic int 66170808Sdelphijtmpfs_lookup(struct vop_cachedlookup_args *v) 67170808Sdelphij{ 68170808Sdelphij struct vnode *dvp = v->a_dvp; 69170808Sdelphij struct vnode **vpp = v->a_vpp; 70170808Sdelphij struct componentname *cnp = v->a_cnp; 71170808Sdelphij struct thread *td = cnp->cn_thread; 72170808Sdelphij 73170808Sdelphij int error; 74170808Sdelphij struct tmpfs_dirent *de; 75170808Sdelphij struct tmpfs_node *dnode; 76170808Sdelphij 77170808Sdelphij dnode = VP_TO_TMPFS_DIR(dvp); 78170808Sdelphij *vpp = NULLVP; 79170808Sdelphij 80170808Sdelphij /* Check accessibility of requested node as a first step. */ 81170808Sdelphij error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, td); 82170808Sdelphij if (error != 0) 83170808Sdelphij goto out; 84170808Sdelphij 85170808Sdelphij /* We cannot be requesting the parent directory of the root node. */ 86170808Sdelphij MPASS(IMPLIES(dnode->tn_type == VDIR && 87170808Sdelphij dnode->tn_dir.tn_parent == dnode, 88170808Sdelphij !(cnp->cn_flags & ISDOTDOT))); 89170808Sdelphij 90170808Sdelphij if (cnp->cn_flags & ISDOTDOT) { 91171799Sdelphij int ltype = 0; 92171799Sdelphij 93176559Sattilio ltype = VOP_ISLOCKED(dvp); 94171802Sdelphij vhold(dvp); 95175294Sattilio VOP_UNLOCK(dvp, 0); 96170808Sdelphij /* Allocate a new vnode on the matching entry. */ 97171799Sdelphij error = tmpfs_alloc_vp(dvp->v_mount, dnode->tn_dir.tn_parent, 98171799Sdelphij cnp->cn_lkflags, vpp, td); 99170808Sdelphij 100175202Sattilio vn_lock(dvp, ltype | LK_RETRY); 101171802Sdelphij vdrop(dvp); 102170808Sdelphij } else if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 103170808Sdelphij VREF(dvp); 104170808Sdelphij *vpp = dvp; 105170808Sdelphij error = 0; 106170808Sdelphij } else { 107188318Skib de = tmpfs_dir_lookup(dnode, NULL, cnp); 108170808Sdelphij if (de == NULL) { 109170808Sdelphij /* The entry was not found in the directory. 110170808Sdelphij * This is OK if we are creating or renaming an 111170808Sdelphij * entry and are working on the last component of 112170808Sdelphij * the path name. */ 113170808Sdelphij if ((cnp->cn_flags & ISLASTCN) && 114170808Sdelphij (cnp->cn_nameiop == CREATE || \ 115170808Sdelphij cnp->cn_nameiop == RENAME)) { 116170808Sdelphij error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, 117170808Sdelphij cnp->cn_thread); 118170808Sdelphij if (error != 0) 119170808Sdelphij goto out; 120170808Sdelphij 121170808Sdelphij /* Keep the component name in the buffer for 122170808Sdelphij * future uses. */ 123170808Sdelphij cnp->cn_flags |= SAVENAME; 124170808Sdelphij 125170808Sdelphij error = EJUSTRETURN; 126170808Sdelphij } else 127170808Sdelphij error = ENOENT; 128170808Sdelphij } else { 129170808Sdelphij struct tmpfs_node *tnode; 130170808Sdelphij 131170808Sdelphij /* The entry was found, so get its associated 132170808Sdelphij * tmpfs_node. */ 133170808Sdelphij tnode = de->td_node; 134170808Sdelphij 135170808Sdelphij /* If we are not at the last path component and 136170808Sdelphij * found a non-directory or non-link entry (which 137170808Sdelphij * may itself be pointing to a directory), raise 138170808Sdelphij * an error. */ 139170808Sdelphij if ((tnode->tn_type != VDIR && 140170808Sdelphij tnode->tn_type != VLNK) && 141170808Sdelphij !(cnp->cn_flags & ISLASTCN)) { 142170808Sdelphij error = ENOTDIR; 143170808Sdelphij goto out; 144170808Sdelphij } 145170808Sdelphij 146170808Sdelphij /* If we are deleting or renaming the entry, keep 147170808Sdelphij * track of its tmpfs_dirent so that it can be 148170808Sdelphij * easily deleted later. */ 149170808Sdelphij if ((cnp->cn_flags & ISLASTCN) && 150170808Sdelphij (cnp->cn_nameiop == DELETE || 151170808Sdelphij cnp->cn_nameiop == RENAME)) { 152170808Sdelphij error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, 153170808Sdelphij cnp->cn_thread); 154170808Sdelphij if (error != 0) 155170808Sdelphij goto out; 156171070Sdelphij 157170808Sdelphij /* Allocate a new vnode on the matching entry. */ 158171799Sdelphij error = tmpfs_alloc_vp(dvp->v_mount, tnode, 159171799Sdelphij cnp->cn_lkflags, vpp, td); 160170808Sdelphij if (error != 0) 161170808Sdelphij goto out; 162170808Sdelphij 163170808Sdelphij if ((dnode->tn_mode & S_ISTXT) && 164170808Sdelphij VOP_ACCESS(dvp, VADMIN, cnp->cn_cred, cnp->cn_thread) && 165170808Sdelphij VOP_ACCESS(*vpp, VADMIN, cnp->cn_cred, cnp->cn_thread)) { 166170808Sdelphij error = EPERM; 167170808Sdelphij vput(*vpp); 168170808Sdelphij *vpp = NULL; 169170808Sdelphij goto out; 170171070Sdelphij } 171170808Sdelphij cnp->cn_flags |= SAVENAME; 172171799Sdelphij } else { 173171799Sdelphij error = tmpfs_alloc_vp(dvp->v_mount, tnode, 174171799Sdelphij cnp->cn_lkflags, vpp, td); 175170808Sdelphij } 176170808Sdelphij } 177170808Sdelphij } 178170808Sdelphij 179170808Sdelphij /* Store the result of this lookup in the cache. Avoid this if the 180170808Sdelphij * request was for creation, as it does not improve timings on 181170808Sdelphij * emprical tests. */ 182170808Sdelphij if ((cnp->cn_flags & MAKEENTRY) && cnp->cn_nameiop != CREATE) 183170808Sdelphij cache_enter(dvp, *vpp, cnp); 184170808Sdelphij 185170808Sdelphijout: 186170808Sdelphij /* If there were no errors, *vpp cannot be null and it must be 187170808Sdelphij * locked. */ 188176559Sattilio MPASS(IFF(error == 0, *vpp != NULLVP && VOP_ISLOCKED(*vpp))); 189170808Sdelphij 190170808Sdelphij return error; 191170808Sdelphij} 192170808Sdelphij 193170808Sdelphij/* --------------------------------------------------------------------- */ 194170808Sdelphij 195171069Sdelphijstatic int 196170808Sdelphijtmpfs_create(struct vop_create_args *v) 197170808Sdelphij{ 198170808Sdelphij struct vnode *dvp = v->a_dvp; 199170808Sdelphij struct vnode **vpp = v->a_vpp; 200170808Sdelphij struct componentname *cnp = v->a_cnp; 201170808Sdelphij struct vattr *vap = v->a_vap; 202170808Sdelphij 203170808Sdelphij MPASS(vap->va_type == VREG || vap->va_type == VSOCK); 204170808Sdelphij 205170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL); 206170808Sdelphij} 207170808Sdelphij/* --------------------------------------------------------------------- */ 208170808Sdelphij 209171069Sdelphijstatic int 210170808Sdelphijtmpfs_mknod(struct vop_mknod_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 if (vap->va_type != VBLK && vap->va_type != VCHR && 218170808Sdelphij vap->va_type != VFIFO) 219170808Sdelphij return EINVAL; 220170808Sdelphij 221170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL); 222170808Sdelphij} 223170808Sdelphij 224170808Sdelphij/* --------------------------------------------------------------------- */ 225170808Sdelphij 226171069Sdelphijstatic int 227170808Sdelphijtmpfs_open(struct vop_open_args *v) 228170808Sdelphij{ 229170808Sdelphij struct vnode *vp = v->a_vp; 230170808Sdelphij int mode = v->a_mode; 231170808Sdelphij 232170808Sdelphij int error; 233170808Sdelphij struct tmpfs_node *node; 234170808Sdelphij 235176559Sattilio MPASS(VOP_ISLOCKED(vp)); 236170808Sdelphij 237170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 238171070Sdelphij 239170808Sdelphij /* The file is still active but all its names have been removed 240170808Sdelphij * (e.g. by a "rmdir $(pwd)"). It cannot be opened any more as 241170808Sdelphij * it is about to die. */ 242170808Sdelphij if (node->tn_links < 1) 243170808Sdelphij return (ENOENT); 244170808Sdelphij 245170808Sdelphij /* If the file is marked append-only, deny write requests. */ 246170808Sdelphij if (node->tn_flags & APPEND && (mode & (FWRITE | O_APPEND)) == FWRITE) 247170808Sdelphij error = EPERM; 248170808Sdelphij else { 249170808Sdelphij error = 0; 250171070Sdelphij vnode_create_vobject(vp, node->tn_size, v->a_td); 251170808Sdelphij } 252170808Sdelphij 253176559Sattilio MPASS(VOP_ISLOCKED(vp)); 254170808Sdelphij return error; 255170808Sdelphij} 256170808Sdelphij 257170808Sdelphij/* --------------------------------------------------------------------- */ 258170808Sdelphij 259171069Sdelphijstatic int 260170808Sdelphijtmpfs_close(struct vop_close_args *v) 261170808Sdelphij{ 262170808Sdelphij struct vnode *vp = v->a_vp; 263170808Sdelphij 264170808Sdelphij struct tmpfs_node *node; 265170808Sdelphij 266176559Sattilio MPASS(VOP_ISLOCKED(vp)); 267170808Sdelphij 268170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 269170808Sdelphij 270170808Sdelphij if (node->tn_links > 0) { 271170808Sdelphij /* Update node times. No need to do it if the node has 272170808Sdelphij * been deleted, because it will vanish after we return. */ 273170808Sdelphij tmpfs_update(vp); 274170808Sdelphij } 275170808Sdelphij 276170808Sdelphij return 0; 277170808Sdelphij} 278170808Sdelphij 279170808Sdelphij/* --------------------------------------------------------------------- */ 280170808Sdelphij 281170808Sdelphijint 282170808Sdelphijtmpfs_access(struct vop_access_args *v) 283170808Sdelphij{ 284170808Sdelphij struct vnode *vp = v->a_vp; 285184413Strasz accmode_t accmode = v->a_accmode; 286170808Sdelphij struct ucred *cred = v->a_cred; 287170808Sdelphij 288170808Sdelphij int error; 289170808Sdelphij struct tmpfs_node *node; 290170808Sdelphij 291176559Sattilio MPASS(VOP_ISLOCKED(vp)); 292170808Sdelphij 293170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 294170808Sdelphij 295170808Sdelphij switch (vp->v_type) { 296170808Sdelphij case VDIR: 297170808Sdelphij /* FALLTHROUGH */ 298170808Sdelphij case VLNK: 299170808Sdelphij /* FALLTHROUGH */ 300170808Sdelphij case VREG: 301184413Strasz if (accmode & VWRITE && vp->v_mount->mnt_flag & MNT_RDONLY) { 302170808Sdelphij error = EROFS; 303170808Sdelphij goto out; 304170808Sdelphij } 305170808Sdelphij break; 306170808Sdelphij 307170808Sdelphij case VBLK: 308170808Sdelphij /* FALLTHROUGH */ 309170808Sdelphij case VCHR: 310170808Sdelphij /* FALLTHROUGH */ 311170808Sdelphij case VSOCK: 312170808Sdelphij /* FALLTHROUGH */ 313170808Sdelphij case VFIFO: 314170808Sdelphij break; 315170808Sdelphij 316170808Sdelphij default: 317170808Sdelphij error = EINVAL; 318170808Sdelphij goto out; 319170808Sdelphij } 320170808Sdelphij 321184413Strasz if (accmode & VWRITE && node->tn_flags & IMMUTABLE) { 322170808Sdelphij error = EPERM; 323170808Sdelphij goto out; 324170808Sdelphij } 325170808Sdelphij 326170808Sdelphij error = vaccess(vp->v_type, node->tn_mode, node->tn_uid, 327184413Strasz node->tn_gid, accmode, cred, NULL); 328170808Sdelphij 329170808Sdelphijout: 330176559Sattilio MPASS(VOP_ISLOCKED(vp)); 331170808Sdelphij 332170808Sdelphij return error; 333170808Sdelphij} 334170808Sdelphij 335170808Sdelphij/* --------------------------------------------------------------------- */ 336170808Sdelphij 337170808Sdelphijint 338170808Sdelphijtmpfs_getattr(struct vop_getattr_args *v) 339170808Sdelphij{ 340170808Sdelphij struct vnode *vp = v->a_vp; 341170808Sdelphij struct vattr *vap = v->a_vap; 342170808Sdelphij 343170808Sdelphij struct tmpfs_node *node; 344170808Sdelphij 345170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 346170808Sdelphij 347170808Sdelphij tmpfs_update(vp); 348170808Sdelphij 349170808Sdelphij vap->va_type = vp->v_type; 350170808Sdelphij vap->va_mode = node->tn_mode; 351170808Sdelphij vap->va_nlink = node->tn_links; 352170808Sdelphij vap->va_uid = node->tn_uid; 353170808Sdelphij vap->va_gid = node->tn_gid; 354170808Sdelphij vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 355170808Sdelphij vap->va_fileid = node->tn_id; 356170808Sdelphij vap->va_size = node->tn_size; 357170808Sdelphij vap->va_blocksize = PAGE_SIZE; 358170808Sdelphij vap->va_atime = node->tn_atime; 359170808Sdelphij vap->va_mtime = node->tn_mtime; 360170808Sdelphij vap->va_ctime = node->tn_ctime; 361170808Sdelphij vap->va_birthtime = node->tn_birthtime; 362170808Sdelphij vap->va_gen = node->tn_gen; 363170808Sdelphij vap->va_flags = node->tn_flags; 364170808Sdelphij vap->va_rdev = (vp->v_type == VBLK || vp->v_type == VCHR) ? 365183214Skib node->tn_rdev : NODEV; 366170808Sdelphij vap->va_bytes = round_page(node->tn_size); 367183212Skib vap->va_filerev = 0; 368170808Sdelphij 369170808Sdelphij return 0; 370170808Sdelphij} 371170808Sdelphij 372170808Sdelphij/* --------------------------------------------------------------------- */ 373170808Sdelphij 374170808Sdelphij/* XXX Should this operation be atomic? I think it should, but code in 375170808Sdelphij * XXX other places (e.g., ufs) doesn't seem to be... */ 376170808Sdelphijint 377170808Sdelphijtmpfs_setattr(struct vop_setattr_args *v) 378170808Sdelphij{ 379170808Sdelphij struct vnode *vp = v->a_vp; 380170808Sdelphij struct vattr *vap = v->a_vap; 381170808Sdelphij struct ucred *cred = v->a_cred; 382182371Sattilio struct thread *td = curthread; 383170808Sdelphij 384170808Sdelphij int error; 385170808Sdelphij 386176559Sattilio MPASS(VOP_ISLOCKED(vp)); 387170808Sdelphij 388170808Sdelphij error = 0; 389170808Sdelphij 390170808Sdelphij /* Abort if any unsettable attribute is given. */ 391170808Sdelphij if (vap->va_type != VNON || 392170808Sdelphij vap->va_nlink != VNOVAL || 393170808Sdelphij vap->va_fsid != VNOVAL || 394170808Sdelphij vap->va_fileid != VNOVAL || 395170808Sdelphij vap->va_blocksize != VNOVAL || 396170808Sdelphij vap->va_gen != VNOVAL || 397170808Sdelphij vap->va_rdev != VNOVAL || 398170808Sdelphij vap->va_bytes != VNOVAL) 399170808Sdelphij error = EINVAL; 400170808Sdelphij 401170808Sdelphij if (error == 0 && (vap->va_flags != VNOVAL)) 402182371Sattilio error = tmpfs_chflags(vp, vap->va_flags, cred, td); 403170808Sdelphij 404170808Sdelphij if (error == 0 && (vap->va_size != VNOVAL)) 405182371Sattilio error = tmpfs_chsize(vp, vap->va_size, cred, td); 406170808Sdelphij 407170808Sdelphij if (error == 0 && (vap->va_uid != VNOVAL || vap->va_gid != VNOVAL)) 408182371Sattilio error = tmpfs_chown(vp, vap->va_uid, vap->va_gid, cred, td); 409170808Sdelphij 410170808Sdelphij if (error == 0 && (vap->va_mode != (mode_t)VNOVAL)) 411182371Sattilio error = tmpfs_chmod(vp, vap->va_mode, cred, td); 412170808Sdelphij 413170808Sdelphij if (error == 0 && ((vap->va_atime.tv_sec != VNOVAL && 414170808Sdelphij vap->va_atime.tv_nsec != VNOVAL) || 415170808Sdelphij (vap->va_mtime.tv_sec != VNOVAL && 416170808Sdelphij vap->va_mtime.tv_nsec != VNOVAL) || 417170808Sdelphij (vap->va_birthtime.tv_sec != VNOVAL && 418170808Sdelphij vap->va_birthtime.tv_nsec != VNOVAL))) 419171070Sdelphij error = tmpfs_chtimes(vp, &vap->va_atime, &vap->va_mtime, 420182371Sattilio &vap->va_birthtime, vap->va_vaflags, cred, td); 421170808Sdelphij 422170808Sdelphij /* Update the node times. We give preference to the error codes 423170808Sdelphij * generated by this function rather than the ones that may arise 424170808Sdelphij * from tmpfs_update. */ 425170808Sdelphij tmpfs_update(vp); 426170808Sdelphij 427176559Sattilio MPASS(VOP_ISLOCKED(vp)); 428170808Sdelphij 429170808Sdelphij return error; 430170808Sdelphij} 431170808Sdelphij 432170808Sdelphij/* --------------------------------------------------------------------- */ 433171489Sdelphij 434170808Sdelphijstatic int 435171489Sdelphijtmpfs_mappedread(vm_object_t vobj, vm_object_t tobj, size_t len, struct uio *uio) 436170808Sdelphij{ 437171489Sdelphij vm_pindex_t idx; 438171489Sdelphij vm_page_t m; 439171489Sdelphij struct sf_buf *sf; 440171489Sdelphij off_t offset, addr; 441171489Sdelphij size_t tlen; 442171489Sdelphij caddr_t va; 443171489Sdelphij int error; 444170808Sdelphij 445171489Sdelphij addr = uio->uio_offset; 446171489Sdelphij idx = OFF_TO_IDX(addr); 447171489Sdelphij offset = addr & PAGE_MASK; 448171489Sdelphij tlen = MIN(PAGE_SIZE - offset, len); 449170808Sdelphij 450171489Sdelphij if ((vobj == NULL) || (vobj->resident_page_count == 0)) 451171489Sdelphij goto nocache; 452170808Sdelphij 453171489Sdelphij VM_OBJECT_LOCK(vobj); 454171489Sdelphijlookupvpg: 455171489Sdelphij if (((m = vm_page_lookup(vobj, idx)) != NULL) && 456171489Sdelphij vm_page_is_valid(m, offset, tlen)) { 457171489Sdelphij if (vm_page_sleep_if_busy(m, FALSE, "tmfsmr")) 458171489Sdelphij goto lookupvpg; 459171489Sdelphij vm_page_busy(m); 460171489Sdelphij VM_OBJECT_UNLOCK(vobj); 461170808Sdelphij sched_pin(); 462170808Sdelphij sf = sf_buf_alloc(m, SFB_CPUPRIVATE); 463171489Sdelphij va = (caddr_t)sf_buf_kva(sf); 464171489Sdelphij error = uiomove(va + offset, tlen, uio); 465170808Sdelphij sf_buf_free(sf); 466170808Sdelphij sched_unpin(); 467171489Sdelphij VM_OBJECT_LOCK(vobj); 468171489Sdelphij vm_page_wakeup(m); 469171489Sdelphij VM_OBJECT_UNLOCK(vobj); 470171489Sdelphij return (error); 471171799Sdelphij } 472171489Sdelphij VM_OBJECT_UNLOCK(vobj); 473171489Sdelphijnocache: 474171489Sdelphij VM_OBJECT_LOCK(tobj); 475171489Sdelphij vm_object_pip_add(tobj, 1); 476171489Sdelphij m = vm_page_grab(tobj, idx, VM_ALLOC_WIRED | 477171489Sdelphij VM_ALLOC_ZERO | VM_ALLOC_NORMAL | VM_ALLOC_RETRY); 478171489Sdelphij if (m->valid != VM_PAGE_BITS_ALL) { 479171489Sdelphij int behind, ahead; 480171489Sdelphij if (vm_pager_has_page(tobj, idx, &behind, &ahead)) { 481171489Sdelphij error = vm_pager_get_pages(tobj, &m, 1, 0); 482171489Sdelphij if (error != 0) { 483171489Sdelphij printf("tmpfs get pages from pager error [read]\n"); 484171489Sdelphij goto out; 485171489Sdelphij } 486171489Sdelphij } else 487170808Sdelphij vm_page_zero_invalid(m, TRUE); 488170808Sdelphij } 489171489Sdelphij VM_OBJECT_UNLOCK(tobj); 490171489Sdelphij sched_pin(); 491171489Sdelphij sf = sf_buf_alloc(m, SFB_CPUPRIVATE); 492171489Sdelphij va = (caddr_t)sf_buf_kva(sf); 493171489Sdelphij error = uiomove(va + offset, tlen, uio); 494171489Sdelphij sf_buf_free(sf); 495171489Sdelphij sched_unpin(); 496171489Sdelphij VM_OBJECT_LOCK(tobj); 497171308Sdelphijout: 498171489Sdelphij vm_page_lock_queues(); 499188921Salc vm_page_unwire(m, TRUE); 500171489Sdelphij vm_page_unlock_queues(); 501171489Sdelphij vm_page_wakeup(m); 502171489Sdelphij vm_object_pip_subtract(tobj, 1); 503171489Sdelphij VM_OBJECT_UNLOCK(tobj); 504171489Sdelphij 505171489Sdelphij return (error); 506170808Sdelphij} 507170808Sdelphij 508171069Sdelphijstatic int 509170808Sdelphijtmpfs_read(struct vop_read_args *v) 510170808Sdelphij{ 511170808Sdelphij struct vnode *vp = v->a_vp; 512170808Sdelphij struct uio *uio = v->a_uio; 513170808Sdelphij 514170808Sdelphij struct tmpfs_node *node; 515170808Sdelphij vm_object_t uobj; 516171489Sdelphij size_t len; 517171489Sdelphij int resid; 518170808Sdelphij 519174265Swkoszek int error = 0; 520170808Sdelphij 521170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 522170808Sdelphij 523170808Sdelphij if (vp->v_type != VREG) { 524170808Sdelphij error = EISDIR; 525170808Sdelphij goto out; 526170808Sdelphij } 527170808Sdelphij 528170808Sdelphij if (uio->uio_offset < 0) { 529170808Sdelphij error = EINVAL; 530170808Sdelphij goto out; 531170808Sdelphij } 532170808Sdelphij 533170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED; 534170808Sdelphij 535170808Sdelphij uobj = node->tn_reg.tn_aobj; 536171489Sdelphij while ((resid = uio->uio_resid) > 0) { 537171489Sdelphij error = 0; 538171489Sdelphij if (node->tn_size <= uio->uio_offset) 539171489Sdelphij break; 540171489Sdelphij len = MIN(node->tn_size - uio->uio_offset, resid); 541171489Sdelphij if (len == 0) 542171489Sdelphij break; 543171489Sdelphij error = tmpfs_mappedread(vp->v_object, uobj, len, uio); 544171489Sdelphij if ((error != 0) || (resid == uio->uio_resid)) 545171489Sdelphij break; 546171489Sdelphij } 547170808Sdelphij 548170808Sdelphijout: 549170808Sdelphij 550170808Sdelphij return error; 551170808Sdelphij} 552170808Sdelphij 553170808Sdelphij/* --------------------------------------------------------------------- */ 554170808Sdelphij 555171069Sdelphijstatic int 556171489Sdelphijtmpfs_mappedwrite(vm_object_t vobj, vm_object_t tobj, size_t len, struct uio *uio) 557171489Sdelphij{ 558171489Sdelphij vm_pindex_t idx; 559171489Sdelphij vm_page_t vpg, tpg; 560171489Sdelphij struct sf_buf *sf; 561171489Sdelphij off_t offset, addr; 562171489Sdelphij size_t tlen; 563171489Sdelphij caddr_t va; 564171489Sdelphij int error; 565171489Sdelphij 566174265Swkoszek error = 0; 567174265Swkoszek 568171489Sdelphij addr = uio->uio_offset; 569171489Sdelphij idx = OFF_TO_IDX(addr); 570171489Sdelphij offset = addr & PAGE_MASK; 571171489Sdelphij tlen = MIN(PAGE_SIZE - offset, len); 572171489Sdelphij 573171489Sdelphij if ((vobj == NULL) || (vobj->resident_page_count == 0)) { 574171489Sdelphij vpg = NULL; 575171489Sdelphij goto nocache; 576171489Sdelphij } 577171489Sdelphij 578171489Sdelphij VM_OBJECT_LOCK(vobj); 579171489Sdelphijlookupvpg: 580171489Sdelphij if (((vpg = vm_page_lookup(vobj, idx)) != NULL) && 581171489Sdelphij vm_page_is_valid(vpg, offset, tlen)) { 582171489Sdelphij if (vm_page_sleep_if_busy(vpg, FALSE, "tmfsmw")) 583171489Sdelphij goto lookupvpg; 584171489Sdelphij vm_page_busy(vpg); 585171489Sdelphij vm_page_lock_queues(); 586171489Sdelphij vm_page_undirty(vpg); 587171489Sdelphij vm_page_unlock_queues(); 588171489Sdelphij VM_OBJECT_UNLOCK(vobj); 589171489Sdelphij sched_pin(); 590171489Sdelphij sf = sf_buf_alloc(vpg, SFB_CPUPRIVATE); 591171489Sdelphij va = (caddr_t)sf_buf_kva(sf); 592171489Sdelphij error = uiomove(va + offset, tlen, uio); 593171489Sdelphij sf_buf_free(sf); 594171489Sdelphij sched_unpin(); 595171489Sdelphij } else { 596171489Sdelphij VM_OBJECT_UNLOCK(vobj); 597171489Sdelphij vpg = NULL; 598171489Sdelphij } 599171489Sdelphijnocache: 600171489Sdelphij VM_OBJECT_LOCK(tobj); 601171489Sdelphij vm_object_pip_add(tobj, 1); 602171489Sdelphij tpg = vm_page_grab(tobj, idx, VM_ALLOC_WIRED | 603171489Sdelphij VM_ALLOC_ZERO | VM_ALLOC_NORMAL | VM_ALLOC_RETRY); 604171489Sdelphij if (tpg->valid != VM_PAGE_BITS_ALL) { 605171489Sdelphij int behind, ahead; 606171489Sdelphij if (vm_pager_has_page(tobj, idx, &behind, &ahead)) { 607171489Sdelphij error = vm_pager_get_pages(tobj, &tpg, 1, 0); 608171489Sdelphij if (error != 0) { 609171489Sdelphij printf("tmpfs get pages from pager error [write]\n"); 610171489Sdelphij goto out; 611171489Sdelphij } 612171489Sdelphij } else 613171489Sdelphij vm_page_zero_invalid(tpg, TRUE); 614171489Sdelphij } 615171489Sdelphij VM_OBJECT_UNLOCK(tobj); 616171489Sdelphij if (vpg == NULL) { 617171489Sdelphij sched_pin(); 618171489Sdelphij sf = sf_buf_alloc(tpg, SFB_CPUPRIVATE); 619171489Sdelphij va = (caddr_t)sf_buf_kva(sf); 620171489Sdelphij error = uiomove(va + offset, tlen, uio); 621171489Sdelphij sf_buf_free(sf); 622171489Sdelphij sched_unpin(); 623171489Sdelphij } else { 624171489Sdelphij KASSERT(vpg->valid == VM_PAGE_BITS_ALL, ("parts of vpg invalid")); 625171489Sdelphij pmap_copy_page(vpg, tpg); 626171489Sdelphij } 627171489Sdelphij VM_OBJECT_LOCK(tobj); 628171489Sdelphijout: 629171489Sdelphij if (vobj != NULL) 630171489Sdelphij VM_OBJECT_LOCK(vobj); 631171489Sdelphij vm_page_lock_queues(); 632171489Sdelphij if (error == 0) { 633171489Sdelphij vm_page_set_validclean(tpg, offset, tlen); 634171489Sdelphij vm_page_zero_invalid(tpg, TRUE); 635171489Sdelphij vm_page_dirty(tpg); 636171489Sdelphij } 637188921Salc vm_page_unwire(tpg, TRUE); 638171489Sdelphij vm_page_unlock_queues(); 639171489Sdelphij vm_page_wakeup(tpg); 640171489Sdelphij if (vpg != NULL) 641171489Sdelphij vm_page_wakeup(vpg); 642171489Sdelphij if (vobj != NULL) 643171489Sdelphij VM_OBJECT_UNLOCK(vobj); 644171489Sdelphij vm_object_pip_subtract(tobj, 1); 645171489Sdelphij VM_OBJECT_UNLOCK(tobj); 646171489Sdelphij 647171489Sdelphij return (error); 648171489Sdelphij} 649171489Sdelphij 650171489Sdelphijstatic int 651170808Sdelphijtmpfs_write(struct vop_write_args *v) 652170808Sdelphij{ 653170808Sdelphij struct vnode *vp = v->a_vp; 654170808Sdelphij struct uio *uio = v->a_uio; 655170808Sdelphij int ioflag = v->a_ioflag; 656170808Sdelphij struct thread *td = uio->uio_td; 657170808Sdelphij 658170808Sdelphij boolean_t extended; 659171489Sdelphij int error = 0; 660170808Sdelphij off_t oldsize; 661170808Sdelphij struct tmpfs_node *node; 662170808Sdelphij vm_object_t uobj; 663171489Sdelphij size_t len; 664171489Sdelphij int resid; 665170808Sdelphij 666170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 667170808Sdelphij oldsize = node->tn_size; 668170808Sdelphij 669170808Sdelphij if (uio->uio_offset < 0 || vp->v_type != VREG) { 670170808Sdelphij error = EINVAL; 671170808Sdelphij goto out; 672170808Sdelphij } 673170808Sdelphij 674170808Sdelphij if (uio->uio_resid == 0) { 675170808Sdelphij error = 0; 676170808Sdelphij goto out; 677170808Sdelphij } 678170808Sdelphij 679170808Sdelphij if (ioflag & IO_APPEND) 680170808Sdelphij uio->uio_offset = node->tn_size; 681171070Sdelphij 682171070Sdelphij if (uio->uio_offset + uio->uio_resid > 683170808Sdelphij VFS_TO_TMPFS(vp->v_mount)->tm_maxfilesize) 684170808Sdelphij return (EFBIG); 685170808Sdelphij 686170808Sdelphij if (vp->v_type == VREG && td != NULL) { 687170808Sdelphij PROC_LOCK(td->td_proc); 688170808Sdelphij if (uio->uio_offset + uio->uio_resid > 689170808Sdelphij lim_cur(td->td_proc, RLIMIT_FSIZE)) { 690170808Sdelphij psignal(td->td_proc, SIGXFSZ); 691170808Sdelphij PROC_UNLOCK(td->td_proc); 692170808Sdelphij return (EFBIG); 693170808Sdelphij } 694170808Sdelphij PROC_UNLOCK(td->td_proc); 695170808Sdelphij } 696170808Sdelphij 697170808Sdelphij extended = uio->uio_offset + uio->uio_resid > node->tn_size; 698170808Sdelphij if (extended) { 699170808Sdelphij error = tmpfs_reg_resize(vp, uio->uio_offset + uio->uio_resid); 700170808Sdelphij if (error != 0) 701170808Sdelphij goto out; 702170808Sdelphij } 703170808Sdelphij 704170808Sdelphij uobj = node->tn_reg.tn_aobj; 705171489Sdelphij while ((resid = uio->uio_resid) > 0) { 706171489Sdelphij if (node->tn_size <= uio->uio_offset) 707171489Sdelphij break; 708171489Sdelphij len = MIN(node->tn_size - uio->uio_offset, resid); 709171489Sdelphij if (len == 0) 710171489Sdelphij break; 711171489Sdelphij error = tmpfs_mappedwrite(vp->v_object, uobj, len, uio); 712171489Sdelphij if ((error != 0) || (resid == uio->uio_resid)) 713171489Sdelphij break; 714171489Sdelphij } 715170808Sdelphij 716170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED | TMPFS_NODE_MODIFIED | 717170808Sdelphij (extended ? TMPFS_NODE_CHANGED : 0); 718170808Sdelphij 719170808Sdelphij if (node->tn_mode & (S_ISUID | S_ISGID)) { 720170808Sdelphij if (priv_check_cred(v->a_cred, PRIV_VFS_RETAINSUGID, 0)) 721170808Sdelphij node->tn_mode &= ~(S_ISUID | S_ISGID); 722170808Sdelphij } 723170808Sdelphij 724170808Sdelphij if (error != 0) 725170808Sdelphij (void)tmpfs_reg_resize(vp, oldsize); 726170808Sdelphij 727170808Sdelphijout: 728170808Sdelphij MPASS(IMPLIES(error == 0, uio->uio_resid == 0)); 729170808Sdelphij MPASS(IMPLIES(error != 0, oldsize == node->tn_size)); 730170808Sdelphij 731170808Sdelphij return error; 732170808Sdelphij} 733170808Sdelphij 734170808Sdelphij/* --------------------------------------------------------------------- */ 735170808Sdelphij 736171069Sdelphijstatic int 737170808Sdelphijtmpfs_fsync(struct vop_fsync_args *v) 738170808Sdelphij{ 739170808Sdelphij struct vnode *vp = v->a_vp; 740170808Sdelphij 741176559Sattilio MPASS(VOP_ISLOCKED(vp)); 742170808Sdelphij 743170808Sdelphij tmpfs_update(vp); 744170808Sdelphij 745170808Sdelphij return 0; 746170808Sdelphij} 747170808Sdelphij 748170808Sdelphij/* --------------------------------------------------------------------- */ 749170808Sdelphij 750171069Sdelphijstatic int 751170808Sdelphijtmpfs_remove(struct vop_remove_args *v) 752170808Sdelphij{ 753170808Sdelphij struct vnode *dvp = v->a_dvp; 754170808Sdelphij struct vnode *vp = v->a_vp; 755170808Sdelphij 756170808Sdelphij int error; 757170808Sdelphij struct tmpfs_dirent *de; 758170808Sdelphij struct tmpfs_mount *tmp; 759170808Sdelphij struct tmpfs_node *dnode; 760170808Sdelphij struct tmpfs_node *node; 761170808Sdelphij 762176559Sattilio MPASS(VOP_ISLOCKED(dvp)); 763176559Sattilio MPASS(VOP_ISLOCKED(vp)); 764170808Sdelphij 765170808Sdelphij if (vp->v_type == VDIR) { 766170808Sdelphij error = EISDIR; 767170808Sdelphij goto out; 768170808Sdelphij } 769170808Sdelphij 770170808Sdelphij dnode = VP_TO_TMPFS_DIR(dvp); 771170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 772170808Sdelphij tmp = VFS_TO_TMPFS(vp->v_mount); 773188318Skib de = tmpfs_dir_lookup(dnode, node, v->a_cnp); 774170808Sdelphij MPASS(de != NULL); 775170808Sdelphij 776170808Sdelphij /* Files marked as immutable or append-only cannot be deleted. */ 777170808Sdelphij if ((node->tn_flags & (IMMUTABLE | APPEND | NOUNLINK)) || 778170808Sdelphij (dnode->tn_flags & APPEND)) { 779170808Sdelphij error = EPERM; 780170808Sdelphij goto out; 781170808Sdelphij } 782170808Sdelphij 783170808Sdelphij /* Remove the entry from the directory; as it is a file, we do not 784170808Sdelphij * have to change the number of hard links of the directory. */ 785170808Sdelphij tmpfs_dir_detach(dvp, de); 786170808Sdelphij 787170808Sdelphij /* Free the directory entry we just deleted. Note that the node 788170808Sdelphij * referred by it will not be removed until the vnode is really 789170808Sdelphij * reclaimed. */ 790170808Sdelphij tmpfs_free_dirent(tmp, de, TRUE); 791170808Sdelphij 792170808Sdelphij if (node->tn_links > 0) 793170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED | TMPFS_NODE_CHANGED | \ 794170808Sdelphij TMPFS_NODE_MODIFIED; 795170808Sdelphij error = 0; 796170808Sdelphij 797170808Sdelphijout: 798170808Sdelphij 799170808Sdelphij return error; 800170808Sdelphij} 801170808Sdelphij 802170808Sdelphij/* --------------------------------------------------------------------- */ 803170808Sdelphij 804171069Sdelphijstatic int 805170808Sdelphijtmpfs_link(struct vop_link_args *v) 806170808Sdelphij{ 807170808Sdelphij struct vnode *dvp = v->a_tdvp; 808170808Sdelphij struct vnode *vp = v->a_vp; 809170808Sdelphij struct componentname *cnp = v->a_cnp; 810170808Sdelphij 811170808Sdelphij int error; 812170808Sdelphij struct tmpfs_dirent *de; 813170808Sdelphij struct tmpfs_node *node; 814170808Sdelphij 815176559Sattilio MPASS(VOP_ISLOCKED(dvp)); 816170808Sdelphij MPASS(cnp->cn_flags & HASBUF); 817170808Sdelphij MPASS(dvp != vp); /* XXX When can this be false? */ 818170808Sdelphij 819170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 820170808Sdelphij 821170808Sdelphij /* XXX: Why aren't the following two tests done by the caller? */ 822170808Sdelphij 823170808Sdelphij /* Hard links of directories are forbidden. */ 824170808Sdelphij if (vp->v_type == VDIR) { 825170808Sdelphij error = EPERM; 826170808Sdelphij goto out; 827170808Sdelphij } 828170808Sdelphij 829170808Sdelphij /* Cannot create cross-device links. */ 830170808Sdelphij if (dvp->v_mount != vp->v_mount) { 831170808Sdelphij error = EXDEV; 832170808Sdelphij goto out; 833170808Sdelphij } 834170808Sdelphij 835170808Sdelphij /* Ensure that we do not overflow the maximum number of links imposed 836170808Sdelphij * by the system. */ 837170808Sdelphij MPASS(node->tn_links <= LINK_MAX); 838170808Sdelphij if (node->tn_links == LINK_MAX) { 839170808Sdelphij error = EMLINK; 840170808Sdelphij goto out; 841170808Sdelphij } 842170808Sdelphij 843170808Sdelphij /* We cannot create links of files marked immutable or append-only. */ 844170808Sdelphij if (node->tn_flags & (IMMUTABLE | APPEND)) { 845170808Sdelphij error = EPERM; 846170808Sdelphij goto out; 847170808Sdelphij } 848170808Sdelphij 849170808Sdelphij /* Allocate a new directory entry to represent the node. */ 850170808Sdelphij error = tmpfs_alloc_dirent(VFS_TO_TMPFS(vp->v_mount), node, 851170808Sdelphij cnp->cn_nameptr, cnp->cn_namelen, &de); 852170808Sdelphij if (error != 0) 853170808Sdelphij goto out; 854170808Sdelphij 855170808Sdelphij /* Insert the new directory entry into the appropriate directory. */ 856170808Sdelphij tmpfs_dir_attach(dvp, de); 857170808Sdelphij 858170808Sdelphij /* vp link count has changed, so update node times. */ 859170808Sdelphij node->tn_status |= TMPFS_NODE_CHANGED; 860170808Sdelphij tmpfs_update(vp); 861170808Sdelphij 862170808Sdelphij error = 0; 863171070Sdelphij 864170808Sdelphijout: 865170808Sdelphij return error; 866170808Sdelphij} 867170808Sdelphij 868170808Sdelphij/* --------------------------------------------------------------------- */ 869170808Sdelphij 870171069Sdelphijstatic int 871170808Sdelphijtmpfs_rename(struct vop_rename_args *v) 872170808Sdelphij{ 873170808Sdelphij struct vnode *fdvp = v->a_fdvp; 874170808Sdelphij struct vnode *fvp = v->a_fvp; 875170808Sdelphij struct componentname *fcnp = v->a_fcnp; 876170808Sdelphij struct vnode *tdvp = v->a_tdvp; 877170808Sdelphij struct vnode *tvp = v->a_tvp; 878170808Sdelphij struct componentname *tcnp = v->a_tcnp; 879170808Sdelphij 880170808Sdelphij char *newname; 881170808Sdelphij int error; 882170808Sdelphij struct tmpfs_dirent *de; 883170808Sdelphij struct tmpfs_node *fdnode; 884170808Sdelphij struct tmpfs_node *fnode; 885171799Sdelphij struct tmpfs_node *tnode; 886170808Sdelphij struct tmpfs_node *tdnode; 887170808Sdelphij 888176559Sattilio MPASS(VOP_ISLOCKED(tdvp)); 889176559Sattilio MPASS(IMPLIES(tvp != NULL, VOP_ISLOCKED(tvp))); 890170808Sdelphij MPASS(fcnp->cn_flags & HASBUF); 891170808Sdelphij MPASS(tcnp->cn_flags & HASBUF); 892170808Sdelphij 893171799Sdelphij tnode = (tvp == NULL) ? NULL : VP_TO_TMPFS_NODE(tvp); 894170808Sdelphij 895170808Sdelphij /* Disallow cross-device renames. 896170808Sdelphij * XXX Why isn't this done by the caller? */ 897170808Sdelphij if (fvp->v_mount != tdvp->v_mount || 898170808Sdelphij (tvp != NULL && fvp->v_mount != tvp->v_mount)) { 899170808Sdelphij error = EXDEV; 900170808Sdelphij goto out; 901170808Sdelphij } 902170808Sdelphij 903170808Sdelphij tdnode = VP_TO_TMPFS_DIR(tdvp); 904170808Sdelphij 905170808Sdelphij /* If source and target are the same file, there is nothing to do. */ 906170808Sdelphij if (fvp == tvp) { 907170808Sdelphij error = 0; 908170808Sdelphij goto out; 909170808Sdelphij } 910170808Sdelphij 911173725Sdelphij /* If we need to move the directory between entries, lock the 912173725Sdelphij * source so that we can safely operate on it. */ 913173725Sdelphij if (tdvp != fdvp) { 914175202Sattilio error = vn_lock(fdvp, LK_EXCLUSIVE | LK_RETRY); 915173725Sdelphij if (error != 0) 916173725Sdelphij goto out; 917173725Sdelphij } 918173725Sdelphij fdnode = VP_TO_TMPFS_DIR(fdvp); 919173725Sdelphij fnode = VP_TO_TMPFS_NODE(fvp); 920188318Skib de = tmpfs_dir_lookup(fdnode, fnode, fcnp); 921173725Sdelphij 922170808Sdelphij /* Avoid manipulating '.' and '..' entries. */ 923170808Sdelphij if (de == NULL) { 924170808Sdelphij MPASS(fvp->v_type == VDIR); 925170808Sdelphij error = EINVAL; 926173725Sdelphij goto out_locked; 927170808Sdelphij } 928170808Sdelphij MPASS(de->td_node == fnode); 929170808Sdelphij 930171070Sdelphij /* If re-naming a directory to another preexisting directory 931170808Sdelphij * ensure that the target directory is empty so that its 932171070Sdelphij * removal causes no side effects. 933170808Sdelphij * Kern_rename gurantees the destination to be a directory 934170808Sdelphij * if the source is one. */ 935170808Sdelphij if (tvp != NULL) { 936171799Sdelphij MPASS(tnode != NULL); 937171070Sdelphij 938170808Sdelphij if ((tnode->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) || 939170808Sdelphij (tdnode->tn_flags & (APPEND | IMMUTABLE))) { 940170808Sdelphij error = EPERM; 941173725Sdelphij goto out_locked; 942170808Sdelphij } 943170808Sdelphij 944171799Sdelphij if (fnode->tn_type == VDIR && tnode->tn_type == VDIR) { 945171799Sdelphij if (tnode->tn_size > 0) { 946171799Sdelphij error = ENOTEMPTY; 947173725Sdelphij goto out_locked; 948171799Sdelphij } 949171799Sdelphij } else if (fnode->tn_type == VDIR && tnode->tn_type != VDIR) { 950171799Sdelphij error = ENOTDIR; 951173725Sdelphij goto out_locked; 952171799Sdelphij } else if (fnode->tn_type != VDIR && tnode->tn_type == VDIR) { 953171799Sdelphij error = EISDIR; 954173725Sdelphij goto out_locked; 955171799Sdelphij } else { 956171799Sdelphij MPASS(fnode->tn_type != VDIR && 957171799Sdelphij tnode->tn_type != VDIR); 958170808Sdelphij } 959170808Sdelphij } 960170808Sdelphij 961170808Sdelphij if ((fnode->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) 962170808Sdelphij || (fdnode->tn_flags & (APPEND | IMMUTABLE))) { 963170808Sdelphij error = EPERM; 964170808Sdelphij goto out_locked; 965170808Sdelphij } 966170808Sdelphij 967170808Sdelphij /* Ensure that we have enough memory to hold the new name, if it 968170808Sdelphij * has to be changed. */ 969170808Sdelphij if (fcnp->cn_namelen != tcnp->cn_namelen || 970183299Sobrien bcmp(fcnp->cn_nameptr, tcnp->cn_nameptr, fcnp->cn_namelen) != 0) { 971171087Sdelphij newname = malloc(tcnp->cn_namelen, M_TMPFSNAME, M_WAITOK); 972170808Sdelphij } else 973170808Sdelphij newname = NULL; 974170808Sdelphij 975170808Sdelphij /* If the node is being moved to another directory, we have to do 976170808Sdelphij * the move. */ 977170808Sdelphij if (fdnode != tdnode) { 978170808Sdelphij /* In case we are moving a directory, we have to adjust its 979170808Sdelphij * parent to point to the new parent. */ 980170808Sdelphij if (de->td_node->tn_type == VDIR) { 981170808Sdelphij struct tmpfs_node *n; 982170808Sdelphij 983170808Sdelphij /* Ensure the target directory is not a child of the 984170808Sdelphij * directory being moved. Otherwise, we'd end up 985170808Sdelphij * with stale nodes. */ 986170808Sdelphij n = tdnode; 987170808Sdelphij while (n != n->tn_dir.tn_parent) { 988170808Sdelphij if (n == fnode) { 989170808Sdelphij error = EINVAL; 990170808Sdelphij if (newname != NULL) 991171087Sdelphij free(newname, M_TMPFSNAME); 992170808Sdelphij goto out_locked; 993170808Sdelphij } 994170808Sdelphij n = n->tn_dir.tn_parent; 995170808Sdelphij } 996170808Sdelphij 997170808Sdelphij /* Adjust the parent pointer. */ 998170808Sdelphij TMPFS_VALIDATE_DIR(fnode); 999170808Sdelphij de->td_node->tn_dir.tn_parent = tdnode; 1000170808Sdelphij 1001170808Sdelphij /* As a result of changing the target of the '..' 1002170808Sdelphij * entry, the link count of the source and target 1003170808Sdelphij * directories has to be adjusted. */ 1004170808Sdelphij fdnode->tn_links--; 1005170808Sdelphij tdnode->tn_links++; 1006170808Sdelphij } 1007170808Sdelphij 1008170808Sdelphij /* Do the move: just remove the entry from the source directory 1009170808Sdelphij * and insert it into the target one. */ 1010170808Sdelphij tmpfs_dir_detach(fdvp, de); 1011170808Sdelphij tmpfs_dir_attach(tdvp, de); 1012170808Sdelphij } 1013170808Sdelphij 1014170808Sdelphij /* If the name has changed, we need to make it effective by changing 1015170808Sdelphij * it in the directory entry. */ 1016170808Sdelphij if (newname != NULL) { 1017170808Sdelphij MPASS(tcnp->cn_namelen <= MAXNAMLEN); 1018170808Sdelphij 1019171087Sdelphij free(de->td_name, M_TMPFSNAME); 1020170808Sdelphij de->td_namelen = (uint16_t)tcnp->cn_namelen; 1021170808Sdelphij memcpy(newname, tcnp->cn_nameptr, tcnp->cn_namelen); 1022170808Sdelphij de->td_name = newname; 1023170808Sdelphij 1024170808Sdelphij fnode->tn_status |= TMPFS_NODE_CHANGED; 1025170808Sdelphij tdnode->tn_status |= TMPFS_NODE_MODIFIED; 1026170808Sdelphij } 1027170808Sdelphij 1028170808Sdelphij /* If we are overwriting an entry, we have to remove the old one 1029170808Sdelphij * from the target directory. */ 1030170808Sdelphij if (tvp != NULL) { 1031170808Sdelphij /* Remove the old entry from the target directory. */ 1032188318Skib de = tmpfs_dir_lookup(tdnode, tnode, tcnp); 1033170808Sdelphij tmpfs_dir_detach(tdvp, de); 1034170808Sdelphij 1035170808Sdelphij /* Free the directory entry we just deleted. Note that the 1036170808Sdelphij * node referred by it will not be removed until the vnode is 1037170808Sdelphij * really reclaimed. */ 1038170808Sdelphij tmpfs_free_dirent(VFS_TO_TMPFS(tvp->v_mount), de, TRUE); 1039170808Sdelphij } 1040170808Sdelphij 1041170808Sdelphij error = 0; 1042170808Sdelphij 1043170808Sdelphijout_locked: 1044170808Sdelphij if (fdnode != tdnode) 1045175294Sattilio VOP_UNLOCK(fdvp, 0); 1046170808Sdelphij 1047170808Sdelphijout: 1048170808Sdelphij /* Release target nodes. */ 1049170808Sdelphij /* XXX: I don't understand when tdvp can be the same as tvp, but 1050170808Sdelphij * other code takes care of this... */ 1051170808Sdelphij if (tdvp == tvp) 1052170808Sdelphij vrele(tdvp); 1053170808Sdelphij else 1054170808Sdelphij vput(tdvp); 1055170808Sdelphij if (tvp != NULL) 1056170808Sdelphij vput(tvp); 1057170808Sdelphij 1058170808Sdelphij /* Release source nodes. */ 1059170808Sdelphij vrele(fdvp); 1060170808Sdelphij vrele(fvp); 1061170808Sdelphij 1062170808Sdelphij return error; 1063170808Sdelphij} 1064170808Sdelphij 1065170808Sdelphij/* --------------------------------------------------------------------- */ 1066170808Sdelphij 1067171069Sdelphijstatic int 1068170808Sdelphijtmpfs_mkdir(struct vop_mkdir_args *v) 1069170808Sdelphij{ 1070170808Sdelphij struct vnode *dvp = v->a_dvp; 1071170808Sdelphij struct vnode **vpp = v->a_vpp; 1072170808Sdelphij struct componentname *cnp = v->a_cnp; 1073170808Sdelphij struct vattr *vap = v->a_vap; 1074170808Sdelphij 1075170808Sdelphij MPASS(vap->va_type == VDIR); 1076170808Sdelphij 1077170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL); 1078170808Sdelphij} 1079170808Sdelphij 1080170808Sdelphij/* --------------------------------------------------------------------- */ 1081170808Sdelphij 1082171069Sdelphijstatic int 1083170808Sdelphijtmpfs_rmdir(struct vop_rmdir_args *v) 1084170808Sdelphij{ 1085170808Sdelphij struct vnode *dvp = v->a_dvp; 1086170808Sdelphij struct vnode *vp = v->a_vp; 1087170808Sdelphij 1088170808Sdelphij int error; 1089170808Sdelphij struct tmpfs_dirent *de; 1090170808Sdelphij struct tmpfs_mount *tmp; 1091170808Sdelphij struct tmpfs_node *dnode; 1092170808Sdelphij struct tmpfs_node *node; 1093170808Sdelphij 1094176559Sattilio MPASS(VOP_ISLOCKED(dvp)); 1095176559Sattilio MPASS(VOP_ISLOCKED(vp)); 1096170808Sdelphij 1097170808Sdelphij tmp = VFS_TO_TMPFS(dvp->v_mount); 1098170808Sdelphij dnode = VP_TO_TMPFS_DIR(dvp); 1099170808Sdelphij node = VP_TO_TMPFS_DIR(vp); 1100170808Sdelphij 1101171070Sdelphij /* Directories with more than two entries ('.' and '..') cannot be 1102171070Sdelphij * removed. */ 1103171070Sdelphij if (node->tn_size > 0) { 1104171070Sdelphij error = ENOTEMPTY; 1105171070Sdelphij goto out; 1106171070Sdelphij } 1107170808Sdelphij 1108170808Sdelphij if ((dnode->tn_flags & APPEND) 1109170808Sdelphij || (node->tn_flags & (NOUNLINK | IMMUTABLE | APPEND))) { 1110170808Sdelphij error = EPERM; 1111170808Sdelphij goto out; 1112170808Sdelphij } 1113170808Sdelphij 1114171070Sdelphij /* This invariant holds only if we are not trying to remove "..". 1115171070Sdelphij * We checked for that above so this is safe now. */ 1116170808Sdelphij MPASS(node->tn_dir.tn_parent == dnode); 1117170808Sdelphij 1118170808Sdelphij /* Get the directory entry associated with node (vp). This was 1119170808Sdelphij * filled by tmpfs_lookup while looking up the entry. */ 1120188318Skib de = tmpfs_dir_lookup(dnode, node, v->a_cnp); 1121170808Sdelphij MPASS(TMPFS_DIRENT_MATCHES(de, 1122170808Sdelphij v->a_cnp->cn_nameptr, 1123170808Sdelphij v->a_cnp->cn_namelen)); 1124170808Sdelphij 1125170808Sdelphij /* Check flags to see if we are allowed to remove the directory. */ 1126170808Sdelphij if (dnode->tn_flags & APPEND 1127170808Sdelphij || node->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) { 1128170808Sdelphij error = EPERM; 1129170808Sdelphij goto out; 1130170808Sdelphij } 1131170808Sdelphij 1132170808Sdelphij /* Detach the directory entry from the directory (dnode). */ 1133170808Sdelphij tmpfs_dir_detach(dvp, de); 1134170808Sdelphij 1135170808Sdelphij node->tn_links--; 1136170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED | TMPFS_NODE_CHANGED | \ 1137170808Sdelphij TMPFS_NODE_MODIFIED; 1138170808Sdelphij node->tn_dir.tn_parent->tn_links--; 1139170808Sdelphij node->tn_dir.tn_parent->tn_status |= TMPFS_NODE_ACCESSED | \ 1140170808Sdelphij TMPFS_NODE_CHANGED | TMPFS_NODE_MODIFIED; 1141170808Sdelphij 1142171070Sdelphij cache_purge(dvp); 1143170808Sdelphij cache_purge(vp); 1144170808Sdelphij 1145170808Sdelphij /* Free the directory entry we just deleted. Note that the node 1146170808Sdelphij * referred by it will not be removed until the vnode is really 1147170808Sdelphij * reclaimed. */ 1148170808Sdelphij tmpfs_free_dirent(tmp, de, TRUE); 1149170808Sdelphij 1150170808Sdelphij /* Release the deleted vnode (will destroy the node, notify 1151170808Sdelphij * interested parties and clean it from the cache). */ 1152170808Sdelphij 1153170808Sdelphij dnode->tn_status |= TMPFS_NODE_CHANGED; 1154170808Sdelphij tmpfs_update(dvp); 1155170808Sdelphij 1156170808Sdelphij error = 0; 1157170808Sdelphij 1158170808Sdelphijout: 1159170808Sdelphij return error; 1160170808Sdelphij} 1161170808Sdelphij 1162170808Sdelphij/* --------------------------------------------------------------------- */ 1163170808Sdelphij 1164171069Sdelphijstatic int 1165170808Sdelphijtmpfs_symlink(struct vop_symlink_args *v) 1166170808Sdelphij{ 1167170808Sdelphij struct vnode *dvp = v->a_dvp; 1168170808Sdelphij struct vnode **vpp = v->a_vpp; 1169170808Sdelphij struct componentname *cnp = v->a_cnp; 1170170808Sdelphij struct vattr *vap = v->a_vap; 1171170808Sdelphij char *target = v->a_target; 1172170808Sdelphij 1173170808Sdelphij#ifdef notyet /* XXX FreeBSD BUG: kern_symlink is not setting VLNK */ 1174170808Sdelphij MPASS(vap->va_type == VLNK); 1175170808Sdelphij#else 1176170808Sdelphij vap->va_type = VLNK; 1177170808Sdelphij#endif 1178170808Sdelphij 1179170808Sdelphij return tmpfs_alloc_file(dvp, vpp, vap, cnp, target); 1180170808Sdelphij} 1181170808Sdelphij 1182170808Sdelphij/* --------------------------------------------------------------------- */ 1183170808Sdelphij 1184171069Sdelphijstatic int 1185170808Sdelphijtmpfs_readdir(struct vop_readdir_args *v) 1186170808Sdelphij{ 1187170808Sdelphij struct vnode *vp = v->a_vp; 1188170808Sdelphij struct uio *uio = v->a_uio; 1189170808Sdelphij int *eofflag = v->a_eofflag; 1190170808Sdelphij u_long **cookies = v->a_cookies; 1191170808Sdelphij int *ncookies = v->a_ncookies; 1192170808Sdelphij 1193170808Sdelphij int error; 1194170808Sdelphij off_t startoff; 1195171802Sdelphij off_t cnt = 0; 1196170808Sdelphij struct tmpfs_node *node; 1197170808Sdelphij 1198170808Sdelphij /* This operation only makes sense on directory nodes. */ 1199171802Sdelphij if (vp->v_type != VDIR) 1200171802Sdelphij return ENOTDIR; 1201170808Sdelphij 1202170808Sdelphij node = VP_TO_TMPFS_DIR(vp); 1203170808Sdelphij 1204170808Sdelphij startoff = uio->uio_offset; 1205170808Sdelphij 1206171862Sdelphij if (uio->uio_offset == TMPFS_DIRCOOKIE_DOT) { 1207170808Sdelphij error = tmpfs_dir_getdotdent(node, uio); 1208171862Sdelphij if (error != 0) 1209171862Sdelphij goto outok; 1210171862Sdelphij cnt++; 1211171862Sdelphij } 1212171862Sdelphij 1213171862Sdelphij if (uio->uio_offset == TMPFS_DIRCOOKIE_DOTDOT) { 1214170808Sdelphij error = tmpfs_dir_getdotdotdent(node, uio); 1215171862Sdelphij if (error != 0) 1216171862Sdelphij goto outok; 1217171862Sdelphij cnt++; 1218170808Sdelphij } 1219170808Sdelphij 1220171862Sdelphij error = tmpfs_dir_getdents(node, uio, &cnt); 1221171862Sdelphij 1222171862Sdelphijoutok: 1223171862Sdelphij MPASS(error >= -1); 1224171862Sdelphij 1225170808Sdelphij if (error == -1) 1226170808Sdelphij error = 0; 1227170808Sdelphij 1228170808Sdelphij if (eofflag != NULL) 1229170808Sdelphij *eofflag = 1230170808Sdelphij (error == 0 && uio->uio_offset == TMPFS_DIRCOOKIE_EOF); 1231170808Sdelphij 1232170808Sdelphij /* Update NFS-related variables. */ 1233170808Sdelphij if (error == 0 && cookies != NULL && ncookies != NULL) { 1234170808Sdelphij off_t i; 1235170808Sdelphij off_t off = startoff; 1236170808Sdelphij struct tmpfs_dirent *de = NULL; 1237170808Sdelphij 1238170808Sdelphij *ncookies = cnt; 1239170808Sdelphij *cookies = malloc(cnt * sizeof(off_t), M_TEMP, M_WAITOK); 1240170808Sdelphij 1241170808Sdelphij for (i = 0; i < cnt; i++) { 1242170808Sdelphij MPASS(off != TMPFS_DIRCOOKIE_EOF); 1243170808Sdelphij if (off == TMPFS_DIRCOOKIE_DOT) { 1244170808Sdelphij off = TMPFS_DIRCOOKIE_DOTDOT; 1245170808Sdelphij } else { 1246170808Sdelphij if (off == TMPFS_DIRCOOKIE_DOTDOT) { 1247170808Sdelphij de = TAILQ_FIRST(&node->tn_dir.tn_dirhead); 1248170808Sdelphij } else if (de != NULL) { 1249170808Sdelphij de = TAILQ_NEXT(de, td_entries); 1250170808Sdelphij } else { 1251170808Sdelphij de = tmpfs_dir_lookupbycookie(node, 1252170808Sdelphij off); 1253170808Sdelphij MPASS(de != NULL); 1254170808Sdelphij de = TAILQ_NEXT(de, td_entries); 1255170808Sdelphij } 1256171802Sdelphij if (de == NULL) 1257170808Sdelphij off = TMPFS_DIRCOOKIE_EOF; 1258171802Sdelphij else 1259171802Sdelphij off = tmpfs_dircookie(de); 1260170808Sdelphij } 1261170808Sdelphij 1262170808Sdelphij (*cookies)[i] = off; 1263170808Sdelphij } 1264170808Sdelphij MPASS(uio->uio_offset == off); 1265170808Sdelphij } 1266170808Sdelphij 1267170808Sdelphij return error; 1268170808Sdelphij} 1269170808Sdelphij 1270170808Sdelphij/* --------------------------------------------------------------------- */ 1271170808Sdelphij 1272171069Sdelphijstatic int 1273170808Sdelphijtmpfs_readlink(struct vop_readlink_args *v) 1274170808Sdelphij{ 1275170808Sdelphij struct vnode *vp = v->a_vp; 1276170808Sdelphij struct uio *uio = v->a_uio; 1277170808Sdelphij 1278170808Sdelphij int error; 1279170808Sdelphij struct tmpfs_node *node; 1280170808Sdelphij 1281170808Sdelphij MPASS(uio->uio_offset == 0); 1282170808Sdelphij MPASS(vp->v_type == VLNK); 1283170808Sdelphij 1284170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1285170808Sdelphij 1286170808Sdelphij error = uiomove(node->tn_link, MIN(node->tn_size, uio->uio_resid), 1287170808Sdelphij uio); 1288170808Sdelphij node->tn_status |= TMPFS_NODE_ACCESSED; 1289170808Sdelphij 1290170808Sdelphij return error; 1291170808Sdelphij} 1292170808Sdelphij 1293170808Sdelphij/* --------------------------------------------------------------------- */ 1294170808Sdelphij 1295171069Sdelphijstatic int 1296170808Sdelphijtmpfs_inactive(struct vop_inactive_args *v) 1297170808Sdelphij{ 1298170808Sdelphij struct vnode *vp = v->a_vp; 1299170808Sdelphij struct thread *l = v->a_td; 1300170808Sdelphij 1301170808Sdelphij struct tmpfs_node *node; 1302170808Sdelphij 1303176559Sattilio MPASS(VOP_ISLOCKED(vp)); 1304170808Sdelphij 1305170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1306170808Sdelphij 1307170808Sdelphij if (node->tn_links == 0) 1308170808Sdelphij vrecycle(vp, l); 1309170808Sdelphij 1310170808Sdelphij return 0; 1311170808Sdelphij} 1312170808Sdelphij 1313170808Sdelphij/* --------------------------------------------------------------------- */ 1314170808Sdelphij 1315170808Sdelphijint 1316170808Sdelphijtmpfs_reclaim(struct vop_reclaim_args *v) 1317170808Sdelphij{ 1318170808Sdelphij struct vnode *vp = v->a_vp; 1319170808Sdelphij 1320170808Sdelphij struct tmpfs_mount *tmp; 1321170808Sdelphij struct tmpfs_node *node; 1322170808Sdelphij 1323170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1324170808Sdelphij tmp = VFS_TO_TMPFS(vp->v_mount); 1325171070Sdelphij 1326170808Sdelphij vnode_destroy_vobject(vp); 1327170808Sdelphij cache_purge(vp); 1328170808Sdelphij tmpfs_free_vp(vp); 1329170808Sdelphij 1330170808Sdelphij /* If the node referenced by this vnode was deleted by the user, 1331170808Sdelphij * we must free its associated data structures (now that the vnode 1332170808Sdelphij * is being reclaimed). */ 1333170808Sdelphij if (node->tn_links == 0) 1334170808Sdelphij tmpfs_free_node(tmp, node); 1335170808Sdelphij 1336170808Sdelphij MPASS(vp->v_data == NULL); 1337170808Sdelphij return 0; 1338170808Sdelphij} 1339170808Sdelphij 1340170808Sdelphij/* --------------------------------------------------------------------- */ 1341170808Sdelphij 1342171069Sdelphijstatic int 1343170808Sdelphijtmpfs_print(struct vop_print_args *v) 1344170808Sdelphij{ 1345170808Sdelphij struct vnode *vp = v->a_vp; 1346170808Sdelphij 1347170808Sdelphij struct tmpfs_node *node; 1348170808Sdelphij 1349170808Sdelphij node = VP_TO_TMPFS_NODE(vp); 1350170808Sdelphij 1351170808Sdelphij printf("tag VT_TMPFS, tmpfs_node %p, flags 0x%x, links %d\n", 1352170808Sdelphij node, node->tn_flags, node->tn_links); 1353170808Sdelphij printf("\tmode 0%o, owner %d, group %d, size %" PRIdMAX 1354170808Sdelphij ", status 0x%x\n", 1355170808Sdelphij node->tn_mode, node->tn_uid, node->tn_gid, 1356170808Sdelphij (uintmax_t)node->tn_size, node->tn_status); 1357170808Sdelphij 1358170808Sdelphij if (vp->v_type == VFIFO) 1359170808Sdelphij fifo_printinfo(vp); 1360170808Sdelphij 1361170808Sdelphij printf("\n"); 1362170808Sdelphij 1363170808Sdelphij return 0; 1364170808Sdelphij} 1365170808Sdelphij 1366170808Sdelphij/* --------------------------------------------------------------------- */ 1367170808Sdelphij 1368171069Sdelphijstatic int 1369170808Sdelphijtmpfs_pathconf(struct vop_pathconf_args *v) 1370170808Sdelphij{ 1371170808Sdelphij int name = v->a_name; 1372170808Sdelphij register_t *retval = v->a_retval; 1373170808Sdelphij 1374170808Sdelphij int error; 1375170808Sdelphij 1376170808Sdelphij error = 0; 1377170808Sdelphij 1378170808Sdelphij switch (name) { 1379170808Sdelphij case _PC_LINK_MAX: 1380170808Sdelphij *retval = LINK_MAX; 1381170808Sdelphij break; 1382170808Sdelphij 1383170808Sdelphij case _PC_NAME_MAX: 1384170808Sdelphij *retval = NAME_MAX; 1385170808Sdelphij break; 1386170808Sdelphij 1387170808Sdelphij case _PC_PATH_MAX: 1388170808Sdelphij *retval = PATH_MAX; 1389170808Sdelphij break; 1390170808Sdelphij 1391170808Sdelphij case _PC_PIPE_BUF: 1392170808Sdelphij *retval = PIPE_BUF; 1393170808Sdelphij break; 1394170808Sdelphij 1395170808Sdelphij case _PC_CHOWN_RESTRICTED: 1396170808Sdelphij *retval = 1; 1397170808Sdelphij break; 1398170808Sdelphij 1399170808Sdelphij case _PC_NO_TRUNC: 1400170808Sdelphij *retval = 1; 1401170808Sdelphij break; 1402170808Sdelphij 1403170808Sdelphij case _PC_SYNC_IO: 1404170808Sdelphij *retval = 1; 1405170808Sdelphij break; 1406170808Sdelphij 1407170808Sdelphij case _PC_FILESIZEBITS: 1408170808Sdelphij *retval = 0; /* XXX Don't know which value should I return. */ 1409170808Sdelphij break; 1410170808Sdelphij 1411170808Sdelphij default: 1412170808Sdelphij error = EINVAL; 1413170808Sdelphij } 1414170808Sdelphij 1415170808Sdelphij return error; 1416170808Sdelphij} 1417170808Sdelphij 1418171069Sdelphijstatic int 1419170808Sdelphijtmpfs_vptofh(struct vop_vptofh_args *ap) 1420170808Sdelphij{ 1421170808Sdelphij struct tmpfs_fid *tfhp; 1422170808Sdelphij struct tmpfs_node *node; 1423170808Sdelphij 1424170808Sdelphij tfhp = (struct tmpfs_fid *)ap->a_fhp; 1425170808Sdelphij node = VP_TO_TMPFS_NODE(ap->a_vp); 1426170808Sdelphij 1427170808Sdelphij tfhp->tf_len = sizeof(struct tmpfs_fid); 1428170808Sdelphij tfhp->tf_id = node->tn_id; 1429170808Sdelphij tfhp->tf_gen = node->tn_gen; 1430171070Sdelphij 1431170808Sdelphij return (0); 1432170808Sdelphij} 1433171069Sdelphij 1434171069Sdelphij/* --------------------------------------------------------------------- */ 1435171069Sdelphij 1436171069Sdelphij/* 1437171069Sdelphij * vnode operations vector used for files stored in a tmpfs file system. 1438171069Sdelphij */ 1439171069Sdelphijstruct vop_vector tmpfs_vnodeop_entries = { 1440171069Sdelphij .vop_default = &default_vnodeops, 1441171069Sdelphij .vop_lookup = vfs_cache_lookup, 1442171069Sdelphij .vop_cachedlookup = tmpfs_lookup, 1443171069Sdelphij .vop_create = tmpfs_create, 1444171069Sdelphij .vop_mknod = tmpfs_mknod, 1445171069Sdelphij .vop_open = tmpfs_open, 1446171069Sdelphij .vop_close = tmpfs_close, 1447171069Sdelphij .vop_access = tmpfs_access, 1448171069Sdelphij .vop_getattr = tmpfs_getattr, 1449171069Sdelphij .vop_setattr = tmpfs_setattr, 1450171069Sdelphij .vop_read = tmpfs_read, 1451171069Sdelphij .vop_write = tmpfs_write, 1452171069Sdelphij .vop_fsync = tmpfs_fsync, 1453171069Sdelphij .vop_remove = tmpfs_remove, 1454171069Sdelphij .vop_link = tmpfs_link, 1455171069Sdelphij .vop_rename = tmpfs_rename, 1456171069Sdelphij .vop_mkdir = tmpfs_mkdir, 1457171069Sdelphij .vop_rmdir = tmpfs_rmdir, 1458171069Sdelphij .vop_symlink = tmpfs_symlink, 1459171069Sdelphij .vop_readdir = tmpfs_readdir, 1460171069Sdelphij .vop_readlink = tmpfs_readlink, 1461171069Sdelphij .vop_inactive = tmpfs_inactive, 1462171069Sdelphij .vop_reclaim = tmpfs_reclaim, 1463171069Sdelphij .vop_print = tmpfs_print, 1464171069Sdelphij .vop_pathconf = tmpfs_pathconf, 1465171069Sdelphij .vop_vptofh = tmpfs_vptofh, 1466171069Sdelphij .vop_bmap = VOP_EOPNOTSUPP, 1467171069Sdelphij}; 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