msdosfs_vnops.c revision 1.1.2.2
1 1.1.2.2 thorpej /* $NetBSD: msdosfs_vnops.c,v 1.1.2.2 2002/12/29 19:56:06 thorpej Exp $ */ 2 1.1.2.2 thorpej 3 1.1.2.2 thorpej /*- 4 1.1.2.2 thorpej * Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank. 5 1.1.2.2 thorpej * Copyright (C) 1994, 1995, 1997 TooLs GmbH. 6 1.1.2.2 thorpej * All rights reserved. 7 1.1.2.2 thorpej * Original code by Paul Popelka (paulp (at) uts.amdahl.com) (see below). 8 1.1.2.2 thorpej * 9 1.1.2.2 thorpej * Redistribution and use in source and binary forms, with or without 10 1.1.2.2 thorpej * modification, are permitted provided that the following conditions 11 1.1.2.2 thorpej * are met: 12 1.1.2.2 thorpej * 1. Redistributions of source code must retain the above copyright 13 1.1.2.2 thorpej * notice, this list of conditions and the following disclaimer. 14 1.1.2.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 15 1.1.2.2 thorpej * notice, this list of conditions and the following disclaimer in the 16 1.1.2.2 thorpej * documentation and/or other materials provided with the distribution. 17 1.1.2.2 thorpej * 3. All advertising materials mentioning features or use of this software 18 1.1.2.2 thorpej * must display the following acknowledgement: 19 1.1.2.2 thorpej * This product includes software developed by TooLs GmbH. 20 1.1.2.2 thorpej * 4. The name of TooLs GmbH may not be used to endorse or promote products 21 1.1.2.2 thorpej * derived from this software without specific prior written permission. 22 1.1.2.2 thorpej * 23 1.1.2.2 thorpej * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 24 1.1.2.2 thorpej * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 1.1.2.2 thorpej * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 1.1.2.2 thorpej * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 1.1.2.2 thorpej * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 1.1.2.2 thorpej * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 29 1.1.2.2 thorpej * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 30 1.1.2.2 thorpej * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 31 1.1.2.2 thorpej * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 32 1.1.2.2 thorpej * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 1.1.2.2 thorpej */ 34 1.1.2.2 thorpej /* 35 1.1.2.2 thorpej * Written by Paul Popelka (paulp (at) uts.amdahl.com) 36 1.1.2.2 thorpej * 37 1.1.2.2 thorpej * You can do anything you want with this software, just don't say you wrote 38 1.1.2.2 thorpej * it, and don't remove this notice. 39 1.1.2.2 thorpej * 40 1.1.2.2 thorpej * This software is provided "as is". 41 1.1.2.2 thorpej * 42 1.1.2.2 thorpej * The author supplies this software to be publicly redistributed on the 43 1.1.2.2 thorpej * understanding that the author is not responsible for the correct 44 1.1.2.2 thorpej * functioning of this software in any circumstances and is not liable for 45 1.1.2.2 thorpej * any damages caused by this software. 46 1.1.2.2 thorpej * 47 1.1.2.2 thorpej * October 1992 48 1.1.2.2 thorpej */ 49 1.1.2.2 thorpej 50 1.1.2.2 thorpej #include <sys/cdefs.h> 51 1.1.2.2 thorpej __KERNEL_RCSID(0, "$NetBSD: msdosfs_vnops.c,v 1.1.2.2 2002/12/29 19:56:06 thorpej Exp $"); 52 1.1.2.2 thorpej 53 1.1.2.2 thorpej #include <sys/param.h> 54 1.1.2.2 thorpej #include <sys/systm.h> 55 1.1.2.2 thorpej #include <sys/namei.h> 56 1.1.2.2 thorpej #include <sys/resourcevar.h> /* defines plimit structure in proc struct */ 57 1.1.2.2 thorpej #include <sys/kernel.h> 58 1.1.2.2 thorpej #include <sys/file.h> /* define FWRITE ... */ 59 1.1.2.2 thorpej #include <sys/stat.h> 60 1.1.2.2 thorpej #include <sys/buf.h> 61 1.1.2.2 thorpej #include <sys/proc.h> 62 1.1.2.2 thorpej #include <sys/mount.h> 63 1.1.2.2 thorpej #include <sys/vnode.h> 64 1.1.2.2 thorpej #include <sys/signalvar.h> 65 1.1.2.2 thorpej #include <sys/malloc.h> 66 1.1.2.2 thorpej #include <sys/dirent.h> 67 1.1.2.2 thorpej #include <sys/lockf.h> 68 1.1.2.2 thorpej 69 1.1.2.2 thorpej #include <miscfs/genfs/genfs.h> 70 1.1.2.2 thorpej #include <miscfs/specfs/specdev.h> /* XXX */ /* defines v_rdev */ 71 1.1.2.2 thorpej 72 1.1.2.2 thorpej #include <uvm/uvm_extern.h> 73 1.1.2.2 thorpej 74 1.1.2.2 thorpej #include <fs/msdosfs/bpb.h> 75 1.1.2.2 thorpej #include <fs/msdosfs/direntry.h> 76 1.1.2.2 thorpej #include <fs/msdosfs/denode.h> 77 1.1.2.2 thorpej #include <fs/msdosfs/msdosfsmount.h> 78 1.1.2.2 thorpej #include <fs/msdosfs/fat.h> 79 1.1.2.2 thorpej 80 1.1.2.2 thorpej /* 81 1.1.2.2 thorpej * Some general notes: 82 1.1.2.2 thorpej * 83 1.1.2.2 thorpej * In the ufs filesystem the inodes, superblocks, and indirect blocks are 84 1.1.2.2 thorpej * read/written using the vnode for the filesystem. Blocks that represent 85 1.1.2.2 thorpej * the contents of a file are read/written using the vnode for the file 86 1.1.2.2 thorpej * (including directories when they are read/written as files). This 87 1.1.2.2 thorpej * presents problems for the dos filesystem because data that should be in 88 1.1.2.2 thorpej * an inode (if dos had them) resides in the directory itself. Since we 89 1.1.2.2 thorpej * must update directory entries without the benefit of having the vnode 90 1.1.2.2 thorpej * for the directory we must use the vnode for the filesystem. This means 91 1.1.2.2 thorpej * that when a directory is actually read/written (via read, write, or 92 1.1.2.2 thorpej * readdir, or seek) we must use the vnode for the filesystem instead of 93 1.1.2.2 thorpej * the vnode for the directory as would happen in ufs. This is to insure we 94 1.1.2.2 thorpej * retrieve the correct block from the buffer cache since the hash value is 95 1.1.2.2 thorpej * based upon the vnode address and the desired block number. 96 1.1.2.2 thorpej */ 97 1.1.2.2 thorpej 98 1.1.2.2 thorpej /* 99 1.1.2.2 thorpej * Create a regular file. On entry the directory to contain the file being 100 1.1.2.2 thorpej * created is locked. We must release before we return. We must also free 101 1.1.2.2 thorpej * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or 102 1.1.2.2 thorpej * only if the SAVESTART bit in cn_flags is clear on success. 103 1.1.2.2 thorpej */ 104 1.1.2.2 thorpej int 105 1.1.2.2 thorpej msdosfs_create(v) 106 1.1.2.2 thorpej void *v; 107 1.1.2.2 thorpej { 108 1.1.2.2 thorpej struct vop_create_args /* { 109 1.1.2.2 thorpej struct vnode *a_dvp; 110 1.1.2.2 thorpej struct vnode **a_vpp; 111 1.1.2.2 thorpej struct componentname *a_cnp; 112 1.1.2.2 thorpej struct vattr *a_vap; 113 1.1.2.2 thorpej } */ *ap = v; 114 1.1.2.2 thorpej struct componentname *cnp = ap->a_cnp; 115 1.1.2.2 thorpej struct denode ndirent; 116 1.1.2.2 thorpej struct denode *dep; 117 1.1.2.2 thorpej struct denode *pdep = VTODE(ap->a_dvp); 118 1.1.2.2 thorpej int error; 119 1.1.2.2 thorpej struct timespec ts; 120 1.1.2.2 thorpej 121 1.1.2.2 thorpej #ifdef MSDOSFS_DEBUG 122 1.1.2.2 thorpej printf("msdosfs_create(cnp %p, vap %p\n", cnp, ap->a_vap); 123 1.1.2.2 thorpej #endif 124 1.1.2.2 thorpej 125 1.1.2.2 thorpej /* 126 1.1.2.2 thorpej * If this is the root directory and there is no space left we 127 1.1.2.2 thorpej * can't do anything. This is because the root directory can not 128 1.1.2.2 thorpej * change size. 129 1.1.2.2 thorpej */ 130 1.1.2.2 thorpej if (pdep->de_StartCluster == MSDOSFSROOT 131 1.1.2.2 thorpej && pdep->de_fndoffset >= pdep->de_FileSize) { 132 1.1.2.2 thorpej error = ENOSPC; 133 1.1.2.2 thorpej goto bad; 134 1.1.2.2 thorpej } 135 1.1.2.2 thorpej 136 1.1.2.2 thorpej /* 137 1.1.2.2 thorpej * Create a directory entry for the file, then call createde() to 138 1.1.2.2 thorpej * have it installed. NOTE: DOS files are always executable. We 139 1.1.2.2 thorpej * use the absence of the owner write bit to make the file 140 1.1.2.2 thorpej * readonly. 141 1.1.2.2 thorpej */ 142 1.1.2.2 thorpej #ifdef DIAGNOSTIC 143 1.1.2.2 thorpej if ((cnp->cn_flags & HASBUF) == 0) 144 1.1.2.2 thorpej panic("msdosfs_create: no name"); 145 1.1.2.2 thorpej #endif 146 1.1.2.2 thorpej memset(&ndirent, 0, sizeof(ndirent)); 147 1.1.2.2 thorpej if ((error = uniqdosname(pdep, cnp, ndirent.de_Name)) != 0) 148 1.1.2.2 thorpej goto bad; 149 1.1.2.2 thorpej 150 1.1.2.2 thorpej ndirent.de_Attributes = (ap->a_vap->va_mode & S_IWUSR) ? 151 1.1.2.2 thorpej ATTR_ARCHIVE : ATTR_ARCHIVE | ATTR_READONLY; 152 1.1.2.2 thorpej ndirent.de_StartCluster = 0; 153 1.1.2.2 thorpej ndirent.de_FileSize = 0; 154 1.1.2.2 thorpej ndirent.de_dev = pdep->de_dev; 155 1.1.2.2 thorpej ndirent.de_devvp = pdep->de_devvp; 156 1.1.2.2 thorpej ndirent.de_pmp = pdep->de_pmp; 157 1.1.2.2 thorpej ndirent.de_flag = DE_ACCESS | DE_CREATE | DE_UPDATE; 158 1.1.2.2 thorpej TIMEVAL_TO_TIMESPEC(&time, &ts); 159 1.1.2.2 thorpej DETIMES(&ndirent, &ts, &ts, &ts); 160 1.1.2.2 thorpej if ((error = createde(&ndirent, pdep, &dep, cnp)) != 0) 161 1.1.2.2 thorpej goto bad; 162 1.1.2.2 thorpej if ((cnp->cn_flags & SAVESTART) == 0) 163 1.1.2.2 thorpej PNBUF_PUT(cnp->cn_pnbuf); 164 1.1.2.2 thorpej VN_KNOTE(ap->a_dvp, NOTE_WRITE); 165 1.1.2.2 thorpej vput(ap->a_dvp); 166 1.1.2.2 thorpej *ap->a_vpp = DETOV(dep); 167 1.1.2.2 thorpej return (0); 168 1.1.2.2 thorpej 169 1.1.2.2 thorpej bad: 170 1.1.2.2 thorpej PNBUF_PUT(cnp->cn_pnbuf); 171 1.1.2.2 thorpej vput(ap->a_dvp); 172 1.1.2.2 thorpej return (error); 173 1.1.2.2 thorpej } 174 1.1.2.2 thorpej 175 1.1.2.2 thorpej int 176 1.1.2.2 thorpej msdosfs_mknod(v) 177 1.1.2.2 thorpej void *v; 178 1.1.2.2 thorpej { 179 1.1.2.2 thorpej struct vop_mknod_args /* { 180 1.1.2.2 thorpej struct vnode *a_dvp; 181 1.1.2.2 thorpej struct vnode **a_vpp; 182 1.1.2.2 thorpej struct componentname *a_cnp; 183 1.1.2.2 thorpej struct vattr *a_vap; 184 1.1.2.2 thorpej } */ *ap = v; 185 1.1.2.2 thorpej 186 1.1.2.2 thorpej PNBUF_PUT(ap->a_cnp->cn_pnbuf); 187 1.1.2.2 thorpej vput(ap->a_dvp); 188 1.1.2.2 thorpej return (EINVAL); 189 1.1.2.2 thorpej } 190 1.1.2.2 thorpej 191 1.1.2.2 thorpej int 192 1.1.2.2 thorpej msdosfs_open(v) 193 1.1.2.2 thorpej void *v; 194 1.1.2.2 thorpej { 195 1.1.2.2 thorpej #if 0 196 1.1.2.2 thorpej struct vop_open_args /* { 197 1.1.2.2 thorpej struct vnode *a_vp; 198 1.1.2.2 thorpej int a_mode; 199 1.1.2.2 thorpej struct ucred *a_cred; 200 1.1.2.2 thorpej struct proc *a_p; 201 1.1.2.2 thorpej } */ *ap; 202 1.1.2.2 thorpej #endif 203 1.1.2.2 thorpej 204 1.1.2.2 thorpej return (0); 205 1.1.2.2 thorpej } 206 1.1.2.2 thorpej 207 1.1.2.2 thorpej int 208 1.1.2.2 thorpej msdosfs_close(v) 209 1.1.2.2 thorpej void *v; 210 1.1.2.2 thorpej { 211 1.1.2.2 thorpej struct vop_close_args /* { 212 1.1.2.2 thorpej struct vnode *a_vp; 213 1.1.2.2 thorpej int a_fflag; 214 1.1.2.2 thorpej struct ucred *a_cred; 215 1.1.2.2 thorpej struct proc *a_p; 216 1.1.2.2 thorpej } */ *ap = v; 217 1.1.2.2 thorpej struct vnode *vp = ap->a_vp; 218 1.1.2.2 thorpej struct denode *dep = VTODE(vp); 219 1.1.2.2 thorpej struct timespec ts; 220 1.1.2.2 thorpej 221 1.1.2.2 thorpej simple_lock(&vp->v_interlock); 222 1.1.2.2 thorpej if (vp->v_usecount > 1) { 223 1.1.2.2 thorpej TIMEVAL_TO_TIMESPEC(&time, &ts); 224 1.1.2.2 thorpej DETIMES(dep, &ts, &ts, &ts); 225 1.1.2.2 thorpej } 226 1.1.2.2 thorpej simple_unlock(&vp->v_interlock); 227 1.1.2.2 thorpej return (0); 228 1.1.2.2 thorpej } 229 1.1.2.2 thorpej 230 1.1.2.2 thorpej int 231 1.1.2.2 thorpej msdosfs_access(v) 232 1.1.2.2 thorpej void *v; 233 1.1.2.2 thorpej { 234 1.1.2.2 thorpej struct vop_access_args /* { 235 1.1.2.2 thorpej struct vnode *a_vp; 236 1.1.2.2 thorpej int a_mode; 237 1.1.2.2 thorpej struct ucred *a_cred; 238 1.1.2.2 thorpej struct proc *a_p; 239 1.1.2.2 thorpej } */ *ap = v; 240 1.1.2.2 thorpej struct vnode *vp = ap->a_vp; 241 1.1.2.2 thorpej struct denode *dep = VTODE(vp); 242 1.1.2.2 thorpej struct msdosfsmount *pmp = dep->de_pmp; 243 1.1.2.2 thorpej mode_t mode = ap->a_mode; 244 1.1.2.2 thorpej 245 1.1.2.2 thorpej /* 246 1.1.2.2 thorpej * Disallow write attempts on read-only file systems; 247 1.1.2.2 thorpej * unless the file is a socket, fifo, or a block or 248 1.1.2.2 thorpej * character device resident on the file system. 249 1.1.2.2 thorpej */ 250 1.1.2.2 thorpej if (mode & VWRITE) { 251 1.1.2.2 thorpej switch (vp->v_type) { 252 1.1.2.2 thorpej case VDIR: 253 1.1.2.2 thorpej case VLNK: 254 1.1.2.2 thorpej case VREG: 255 1.1.2.2 thorpej if (vp->v_mount->mnt_flag & MNT_RDONLY) 256 1.1.2.2 thorpej return (EROFS); 257 1.1.2.2 thorpej default: 258 1.1.2.2 thorpej break; 259 1.1.2.2 thorpej } 260 1.1.2.2 thorpej } 261 1.1.2.2 thorpej 262 1.1.2.2 thorpej if ((dep->de_Attributes & ATTR_READONLY) == 0) 263 1.1.2.2 thorpej mode = S_IRWXU|S_IRWXG|S_IRWXO; 264 1.1.2.2 thorpej else 265 1.1.2.2 thorpej mode = S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH; 266 1.1.2.2 thorpej return (vaccess(ap->a_vp->v_type, mode & pmp->pm_mask, 267 1.1.2.2 thorpej pmp->pm_uid, pmp->pm_gid, ap->a_mode, ap->a_cred)); 268 1.1.2.2 thorpej } 269 1.1.2.2 thorpej 270 1.1.2.2 thorpej int 271 1.1.2.2 thorpej msdosfs_getattr(v) 272 1.1.2.2 thorpej void *v; 273 1.1.2.2 thorpej { 274 1.1.2.2 thorpej struct vop_getattr_args /* { 275 1.1.2.2 thorpej struct vnode *a_vp; 276 1.1.2.2 thorpej struct vattr *a_vap; 277 1.1.2.2 thorpej struct ucred *a_cred; 278 1.1.2.2 thorpej struct proc *a_p; 279 1.1.2.2 thorpej } */ *ap = v; 280 1.1.2.2 thorpej struct denode *dep = VTODE(ap->a_vp); 281 1.1.2.2 thorpej struct msdosfsmount *pmp = dep->de_pmp; 282 1.1.2.2 thorpej struct vattr *vap = ap->a_vap; 283 1.1.2.2 thorpej mode_t mode; 284 1.1.2.2 thorpej struct timespec ts; 285 1.1.2.2 thorpej u_long dirsperblk = pmp->pm_BytesPerSec / sizeof(struct direntry); 286 1.1.2.2 thorpej u_long fileid; 287 1.1.2.2 thorpej 288 1.1.2.2 thorpej TIMEVAL_TO_TIMESPEC(&time, &ts); 289 1.1.2.2 thorpej DETIMES(dep, &ts, &ts, &ts); 290 1.1.2.2 thorpej vap->va_fsid = dep->de_dev; 291 1.1.2.2 thorpej /* 292 1.1.2.2 thorpej * The following computation of the fileid must be the same as that 293 1.1.2.2 thorpej * used in msdosfs_readdir() to compute d_fileno. If not, pwd 294 1.1.2.2 thorpej * doesn't work. 295 1.1.2.2 thorpej */ 296 1.1.2.2 thorpej if (dep->de_Attributes & ATTR_DIRECTORY) { 297 1.1.2.2 thorpej fileid = cntobn(pmp, dep->de_StartCluster) * dirsperblk; 298 1.1.2.2 thorpej if (dep->de_StartCluster == MSDOSFSROOT) 299 1.1.2.2 thorpej fileid = 1; 300 1.1.2.2 thorpej } else { 301 1.1.2.2 thorpej fileid = cntobn(pmp, dep->de_dirclust) * dirsperblk; 302 1.1.2.2 thorpej if (dep->de_dirclust == MSDOSFSROOT) 303 1.1.2.2 thorpej fileid = roottobn(pmp, 0) * dirsperblk; 304 1.1.2.2 thorpej fileid += dep->de_diroffset / sizeof(struct direntry); 305 1.1.2.2 thorpej } 306 1.1.2.2 thorpej vap->va_fileid = fileid; 307 1.1.2.2 thorpej if ((dep->de_Attributes & ATTR_READONLY) == 0) 308 1.1.2.2 thorpej mode = S_IRWXU|S_IRWXG|S_IRWXO; 309 1.1.2.2 thorpej else 310 1.1.2.2 thorpej mode = S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH; 311 1.1.2.2 thorpej vap->va_mode = mode & pmp->pm_mask; 312 1.1.2.2 thorpej vap->va_uid = pmp->pm_uid; 313 1.1.2.2 thorpej vap->va_gid = pmp->pm_gid; 314 1.1.2.2 thorpej vap->va_nlink = 1; 315 1.1.2.2 thorpej vap->va_rdev = 0; 316 1.1.2.2 thorpej vap->va_size = ap->a_vp->v_size; 317 1.1.2.2 thorpej dos2unixtime(dep->de_MDate, dep->de_MTime, 0, &vap->va_mtime); 318 1.1.2.2 thorpej if (dep->de_pmp->pm_flags & MSDOSFSMNT_LONGNAME) { 319 1.1.2.2 thorpej dos2unixtime(dep->de_ADate, 0, 0, &vap->va_atime); 320 1.1.2.2 thorpej dos2unixtime(dep->de_CDate, dep->de_CTime, dep->de_CHun, &vap->va_ctime); 321 1.1.2.2 thorpej } else { 322 1.1.2.2 thorpej vap->va_atime = vap->va_mtime; 323 1.1.2.2 thorpej vap->va_ctime = vap->va_mtime; 324 1.1.2.2 thorpej } 325 1.1.2.2 thorpej vap->va_flags = 0; 326 1.1.2.2 thorpej if ((dep->de_Attributes & ATTR_ARCHIVE) == 0) 327 1.1.2.2 thorpej vap->va_mode |= S_ARCH1; 328 1.1.2.2 thorpej vap->va_gen = 0; 329 1.1.2.2 thorpej vap->va_blocksize = pmp->pm_bpcluster; 330 1.1.2.2 thorpej vap->va_bytes = 331 1.1.2.2 thorpej (dep->de_FileSize + pmp->pm_crbomask) & ~pmp->pm_crbomask; 332 1.1.2.2 thorpej vap->va_type = ap->a_vp->v_type; 333 1.1.2.2 thorpej return (0); 334 1.1.2.2 thorpej } 335 1.1.2.2 thorpej 336 1.1.2.2 thorpej int 337 1.1.2.2 thorpej msdosfs_setattr(v) 338 1.1.2.2 thorpej void *v; 339 1.1.2.2 thorpej { 340 1.1.2.2 thorpej struct vop_setattr_args /* { 341 1.1.2.2 thorpej struct vnode *a_vp; 342 1.1.2.2 thorpej struct vattr *a_vap; 343 1.1.2.2 thorpej struct ucred *a_cred; 344 1.1.2.2 thorpej struct proc *a_p; 345 1.1.2.2 thorpej } */ *ap = v; 346 1.1.2.2 thorpej int error = 0, de_changed = 0; 347 1.1.2.2 thorpej struct denode *dep = VTODE(ap->a_vp); 348 1.1.2.2 thorpej struct msdosfsmount *pmp = dep->de_pmp; 349 1.1.2.2 thorpej struct vnode *vp = ap->a_vp; 350 1.1.2.2 thorpej struct vattr *vap = ap->a_vap; 351 1.1.2.2 thorpej struct ucred *cred = ap->a_cred; 352 1.1.2.2 thorpej 353 1.1.2.2 thorpej #ifdef MSDOSFS_DEBUG 354 1.1.2.2 thorpej printf("msdosfs_setattr(): vp %p, vap %p, cred %p, p %p\n", 355 1.1.2.2 thorpej ap->a_vp, vap, cred, ap->a_p); 356 1.1.2.2 thorpej #endif 357 1.1.2.2 thorpej /* 358 1.1.2.2 thorpej * Note we silently ignore uid or gid changes. 359 1.1.2.2 thorpej */ 360 1.1.2.2 thorpej if ((vap->va_type != VNON) || (vap->va_nlink != (nlink_t)VNOVAL) || 361 1.1.2.2 thorpej (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || 362 1.1.2.2 thorpej (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || 363 1.1.2.2 thorpej (vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL) || 364 1.1.2.2 thorpej (vap->va_uid != VNOVAL && vap->va_uid != pmp->pm_uid) || 365 1.1.2.2 thorpej (vap->va_gid != VNOVAL && vap->va_gid != pmp->pm_gid)) { 366 1.1.2.2 thorpej #ifdef MSDOSFS_DEBUG 367 1.1.2.2 thorpej printf("msdosfs_setattr(): returning EINVAL\n"); 368 1.1.2.2 thorpej printf(" va_type %d, va_nlink %x, va_fsid %lx, va_fileid %lx\n", 369 1.1.2.2 thorpej vap->va_type, vap->va_nlink, vap->va_fsid, vap->va_fileid); 370 1.1.2.2 thorpej printf(" va_blocksize %lx, va_rdev %x, va_bytes %qx, va_gen %lx\n", 371 1.1.2.2 thorpej vap->va_blocksize, vap->va_rdev, (long long)vap->va_bytes, vap->va_gen); 372 1.1.2.2 thorpej #endif 373 1.1.2.2 thorpej return (EINVAL); 374 1.1.2.2 thorpej } 375 1.1.2.2 thorpej /* 376 1.1.2.2 thorpej * Silently ignore attributes modifications on directories. 377 1.1.2.2 thorpej */ 378 1.1.2.2 thorpej if (ap->a_vp->v_type == VDIR) 379 1.1.2.2 thorpej return 0; 380 1.1.2.2 thorpej 381 1.1.2.2 thorpej if (vap->va_size != VNOVAL) { 382 1.1.2.2 thorpej if (vp->v_mount->mnt_flag & MNT_RDONLY) 383 1.1.2.2 thorpej return (EROFS); 384 1.1.2.2 thorpej error = detrunc(dep, (u_long)vap->va_size, 0, cred, ap->a_p); 385 1.1.2.2 thorpej if (error) 386 1.1.2.2 thorpej return (error); 387 1.1.2.2 thorpej de_changed = 1; 388 1.1.2.2 thorpej } 389 1.1.2.2 thorpej if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) { 390 1.1.2.2 thorpej if (vp->v_mount->mnt_flag & MNT_RDONLY) 391 1.1.2.2 thorpej return (EROFS); 392 1.1.2.2 thorpej if (cred->cr_uid != pmp->pm_uid && 393 1.1.2.2 thorpej (error = suser(cred, &ap->a_p->p_acflag)) && 394 1.1.2.2 thorpej ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 395 1.1.2.2 thorpej (error = VOP_ACCESS(ap->a_vp, VWRITE, cred, ap->a_p)))) 396 1.1.2.2 thorpej return (error); 397 1.1.2.2 thorpej if ((pmp->pm_flags & MSDOSFSMNT_NOWIN95) == 0 && 398 1.1.2.2 thorpej vap->va_atime.tv_sec != VNOVAL) 399 1.1.2.2 thorpej unix2dostime(&vap->va_atime, &dep->de_ADate, NULL, NULL); 400 1.1.2.2 thorpej if (vap->va_mtime.tv_sec != VNOVAL) 401 1.1.2.2 thorpej unix2dostime(&vap->va_mtime, &dep->de_MDate, &dep->de_MTime, NULL); 402 1.1.2.2 thorpej dep->de_Attributes |= ATTR_ARCHIVE; 403 1.1.2.2 thorpej dep->de_flag |= DE_MODIFIED; 404 1.1.2.2 thorpej de_changed = 1; 405 1.1.2.2 thorpej } 406 1.1.2.2 thorpej /* 407 1.1.2.2 thorpej * DOS files only have the ability to have their writability 408 1.1.2.2 thorpej * attribute set, so we use the owner write bit to set the readonly 409 1.1.2.2 thorpej * attribute. 410 1.1.2.2 thorpej */ 411 1.1.2.2 thorpej if (vap->va_mode != (mode_t)VNOVAL) { 412 1.1.2.2 thorpej if (vp->v_mount->mnt_flag & MNT_RDONLY) 413 1.1.2.2 thorpej return (EROFS); 414 1.1.2.2 thorpej if (cred->cr_uid != pmp->pm_uid && 415 1.1.2.2 thorpej (error = suser(cred, &ap->a_p->p_acflag))) 416 1.1.2.2 thorpej return (error); 417 1.1.2.2 thorpej /* We ignore the read and execute bits. */ 418 1.1.2.2 thorpej if (vap->va_mode & S_IWUSR) 419 1.1.2.2 thorpej dep->de_Attributes &= ~ATTR_READONLY; 420 1.1.2.2 thorpej else 421 1.1.2.2 thorpej dep->de_Attributes |= ATTR_READONLY; 422 1.1.2.2 thorpej dep->de_flag |= DE_MODIFIED; 423 1.1.2.2 thorpej de_changed = 1; 424 1.1.2.2 thorpej } 425 1.1.2.2 thorpej /* 426 1.1.2.2 thorpej * Allow the `archived' bit to be toggled. 427 1.1.2.2 thorpej */ 428 1.1.2.2 thorpej if (vap->va_flags != VNOVAL) { 429 1.1.2.2 thorpej if (vp->v_mount->mnt_flag & MNT_RDONLY) 430 1.1.2.2 thorpej return (EROFS); 431 1.1.2.2 thorpej if (cred->cr_uid != pmp->pm_uid && 432 1.1.2.2 thorpej (error = suser(cred, &ap->a_p->p_acflag))) 433 1.1.2.2 thorpej return (error); 434 1.1.2.2 thorpej if (vap->va_flags & SF_ARCHIVED) 435 1.1.2.2 thorpej dep->de_Attributes &= ~ATTR_ARCHIVE; 436 1.1.2.2 thorpej else 437 1.1.2.2 thorpej dep->de_Attributes |= ATTR_ARCHIVE; 438 1.1.2.2 thorpej dep->de_flag |= DE_MODIFIED; 439 1.1.2.2 thorpej de_changed = 1; 440 1.1.2.2 thorpej } 441 1.1.2.2 thorpej 442 1.1.2.2 thorpej if (de_changed) { 443 1.1.2.2 thorpej VN_KNOTE(vp, NOTE_ATTRIB); 444 1.1.2.2 thorpej return (deupdat(dep, 1)); 445 1.1.2.2 thorpej } else 446 1.1.2.2 thorpej return (0); 447 1.1.2.2 thorpej } 448 1.1.2.2 thorpej 449 1.1.2.2 thorpej int 450 1.1.2.2 thorpej msdosfs_read(v) 451 1.1.2.2 thorpej void *v; 452 1.1.2.2 thorpej { 453 1.1.2.2 thorpej struct vop_read_args /* { 454 1.1.2.2 thorpej struct vnode *a_vp; 455 1.1.2.2 thorpej struct uio *a_uio; 456 1.1.2.2 thorpej int a_ioflag; 457 1.1.2.2 thorpej struct ucred *a_cred; 458 1.1.2.2 thorpej } */ *ap = v; 459 1.1.2.2 thorpej int error = 0; 460 1.1.2.2 thorpej int64_t diff; 461 1.1.2.2 thorpej int blsize; 462 1.1.2.2 thorpej long n; 463 1.1.2.2 thorpej long on; 464 1.1.2.2 thorpej daddr_t lbn; 465 1.1.2.2 thorpej void *win; 466 1.1.2.2 thorpej vsize_t bytelen; 467 1.1.2.2 thorpej struct buf *bp; 468 1.1.2.2 thorpej struct vnode *vp = ap->a_vp; 469 1.1.2.2 thorpej struct denode *dep = VTODE(vp); 470 1.1.2.2 thorpej struct msdosfsmount *pmp = dep->de_pmp; 471 1.1.2.2 thorpej struct uio *uio = ap->a_uio; 472 1.1.2.2 thorpej 473 1.1.2.2 thorpej /* 474 1.1.2.2 thorpej * If they didn't ask for any data, then we are done. 475 1.1.2.2 thorpej */ 476 1.1.2.2 thorpej 477 1.1.2.2 thorpej if (uio->uio_resid == 0) 478 1.1.2.2 thorpej return (0); 479 1.1.2.2 thorpej if (uio->uio_offset < 0) 480 1.1.2.2 thorpej return (EINVAL); 481 1.1.2.2 thorpej if (uio->uio_offset >= dep->de_FileSize) 482 1.1.2.2 thorpej return (0); 483 1.1.2.2 thorpej 484 1.1.2.2 thorpej if (vp->v_type == VREG) { 485 1.1.2.2 thorpej while (uio->uio_resid > 0) { 486 1.1.2.2 thorpej bytelen = MIN(dep->de_FileSize - uio->uio_offset, 487 1.1.2.2 thorpej uio->uio_resid); 488 1.1.2.2 thorpej 489 1.1.2.2 thorpej if (bytelen == 0) 490 1.1.2.2 thorpej break; 491 1.1.2.2 thorpej win = ubc_alloc(&vp->v_uobj, uio->uio_offset, 492 1.1.2.2 thorpej &bytelen, UBC_READ); 493 1.1.2.2 thorpej error = uiomove(win, bytelen, uio); 494 1.1.2.2 thorpej ubc_release(win, 0); 495 1.1.2.2 thorpej if (error) 496 1.1.2.2 thorpej break; 497 1.1.2.2 thorpej } 498 1.1.2.2 thorpej dep->de_flag |= DE_ACCESS; 499 1.1.2.2 thorpej goto out; 500 1.1.2.2 thorpej } 501 1.1.2.2 thorpej 502 1.1.2.2 thorpej /* this loop is only for directories now */ 503 1.1.2.2 thorpej do { 504 1.1.2.2 thorpej lbn = de_cluster(pmp, uio->uio_offset); 505 1.1.2.2 thorpej on = uio->uio_offset & pmp->pm_crbomask; 506 1.1.2.2 thorpej n = MIN(pmp->pm_bpcluster - on, uio->uio_resid); 507 1.1.2.2 thorpej if (uio->uio_offset >= dep->de_FileSize) 508 1.1.2.2 thorpej return (0); 509 1.1.2.2 thorpej /* file size (and hence diff) may be up to 4GB */ 510 1.1.2.2 thorpej diff = dep->de_FileSize - uio->uio_offset; 511 1.1.2.2 thorpej if (diff < n) 512 1.1.2.2 thorpej n = (long) diff; 513 1.1.2.2 thorpej 514 1.1.2.2 thorpej /* convert cluster # to block # */ 515 1.1.2.2 thorpej error = pcbmap(dep, lbn, &lbn, 0, &blsize); 516 1.1.2.2 thorpej if (error) 517 1.1.2.2 thorpej return (error); 518 1.1.2.2 thorpej 519 1.1.2.2 thorpej /* 520 1.1.2.2 thorpej * If we are operating on a directory file then be sure to 521 1.1.2.2 thorpej * do i/o with the vnode for the filesystem instead of the 522 1.1.2.2 thorpej * vnode for the directory. 523 1.1.2.2 thorpej */ 524 1.1.2.2 thorpej error = bread(pmp->pm_devvp, lbn, blsize, NOCRED, &bp); 525 1.1.2.2 thorpej n = MIN(n, pmp->pm_bpcluster - bp->b_resid); 526 1.1.2.2 thorpej if (error) { 527 1.1.2.2 thorpej brelse(bp); 528 1.1.2.2 thorpej return (error); 529 1.1.2.2 thorpej } 530 1.1.2.2 thorpej error = uiomove(bp->b_data + on, (int) n, uio); 531 1.1.2.2 thorpej brelse(bp); 532 1.1.2.2 thorpej } while (error == 0 && uio->uio_resid > 0 && n != 0); 533 1.1.2.2 thorpej 534 1.1.2.2 thorpej out: 535 1.1.2.2 thorpej if ((ap->a_ioflag & IO_SYNC) == IO_SYNC) 536 1.1.2.2 thorpej error = deupdat(dep, 1); 537 1.1.2.2 thorpej return (error); 538 1.1.2.2 thorpej } 539 1.1.2.2 thorpej 540 1.1.2.2 thorpej /* 541 1.1.2.2 thorpej * Write data to a file or directory. 542 1.1.2.2 thorpej */ 543 1.1.2.2 thorpej int 544 1.1.2.2 thorpej msdosfs_write(v) 545 1.1.2.2 thorpej void *v; 546 1.1.2.2 thorpej { 547 1.1.2.2 thorpej struct vop_write_args /* { 548 1.1.2.2 thorpej struct vnode *a_vp; 549 1.1.2.2 thorpej struct uio *a_uio; 550 1.1.2.2 thorpej int a_ioflag; 551 1.1.2.2 thorpej struct ucred *a_cred; 552 1.1.2.2 thorpej } */ *ap = v; 553 1.1.2.2 thorpej int resid; 554 1.1.2.2 thorpej u_long osize; 555 1.1.2.2 thorpej int error = 0; 556 1.1.2.2 thorpej u_long count; 557 1.1.2.2 thorpej int ioflag = ap->a_ioflag; 558 1.1.2.2 thorpej void *win; 559 1.1.2.2 thorpej vsize_t bytelen; 560 1.1.2.2 thorpej off_t oldoff; 561 1.1.2.2 thorpej struct uio *uio = ap->a_uio; 562 1.1.2.2 thorpej struct proc *p = uio->uio_procp; 563 1.1.2.2 thorpej struct vnode *vp = ap->a_vp; 564 1.1.2.2 thorpej struct denode *dep = VTODE(vp); 565 1.1.2.2 thorpej struct msdosfsmount *pmp = dep->de_pmp; 566 1.1.2.2 thorpej struct ucred *cred = ap->a_cred; 567 1.1.2.2 thorpej boolean_t async; 568 1.1.2.2 thorpej int extended=0; 569 1.1.2.2 thorpej 570 1.1.2.2 thorpej #ifdef MSDOSFS_DEBUG 571 1.1.2.2 thorpej printf("msdosfs_write(vp %p, uio %p, ioflag %x, cred %p\n", 572 1.1.2.2 thorpej vp, uio, ioflag, cred); 573 1.1.2.2 thorpej printf("msdosfs_write(): diroff %lu, dirclust %lu, startcluster %lu\n", 574 1.1.2.2 thorpej dep->de_diroffset, dep->de_dirclust, dep->de_StartCluster); 575 1.1.2.2 thorpej #endif 576 1.1.2.2 thorpej 577 1.1.2.2 thorpej switch (vp->v_type) { 578 1.1.2.2 thorpej case VREG: 579 1.1.2.2 thorpej if (ioflag & IO_APPEND) 580 1.1.2.2 thorpej uio->uio_offset = dep->de_FileSize; 581 1.1.2.2 thorpej break; 582 1.1.2.2 thorpej case VDIR: 583 1.1.2.2 thorpej return EISDIR; 584 1.1.2.2 thorpej default: 585 1.1.2.2 thorpej panic("msdosfs_write(): bad file type"); 586 1.1.2.2 thorpej } 587 1.1.2.2 thorpej 588 1.1.2.2 thorpej if (uio->uio_offset < 0) 589 1.1.2.2 thorpej return (EINVAL); 590 1.1.2.2 thorpej 591 1.1.2.2 thorpej if (uio->uio_resid == 0) 592 1.1.2.2 thorpej return (0); 593 1.1.2.2 thorpej 594 1.1.2.2 thorpej /* 595 1.1.2.2 thorpej * If they've exceeded their filesize limit, tell them about it. 596 1.1.2.2 thorpej */ 597 1.1.2.2 thorpej if (p && 598 1.1.2.2 thorpej ((uio->uio_offset + uio->uio_resid) > 599 1.1.2.2 thorpej p->p_rlimit[RLIMIT_FSIZE].rlim_cur)) { 600 1.1.2.2 thorpej psignal(p, SIGXFSZ); 601 1.1.2.2 thorpej return (EFBIG); 602 1.1.2.2 thorpej } 603 1.1.2.2 thorpej 604 1.1.2.2 thorpej /* 605 1.1.2.2 thorpej * If the offset we are starting the write at is beyond the end of 606 1.1.2.2 thorpej * the file, then they've done a seek. Unix filesystems allow 607 1.1.2.2 thorpej * files with holes in them, DOS doesn't so we must fill the hole 608 1.1.2.2 thorpej * with zeroed blocks. 609 1.1.2.2 thorpej */ 610 1.1.2.2 thorpej if (uio->uio_offset > dep->de_FileSize) { 611 1.1.2.2 thorpej if ((error = deextend(dep, uio->uio_offset, cred)) != 0) 612 1.1.2.2 thorpej return (error); 613 1.1.2.2 thorpej } 614 1.1.2.2 thorpej 615 1.1.2.2 thorpej /* 616 1.1.2.2 thorpej * Remember some values in case the write fails. 617 1.1.2.2 thorpej */ 618 1.1.2.2 thorpej async = vp->v_mount->mnt_flag & MNT_ASYNC; 619 1.1.2.2 thorpej resid = uio->uio_resid; 620 1.1.2.2 thorpej osize = dep->de_FileSize; 621 1.1.2.2 thorpej 622 1.1.2.2 thorpej /* 623 1.1.2.2 thorpej * If we write beyond the end of the file, extend it to its ultimate 624 1.1.2.2 thorpej * size ahead of the time to hopefully get a contiguous area. 625 1.1.2.2 thorpej */ 626 1.1.2.2 thorpej if (uio->uio_offset + resid > osize) { 627 1.1.2.2 thorpej count = de_clcount(pmp, uio->uio_offset + resid) - 628 1.1.2.2 thorpej de_clcount(pmp, osize); 629 1.1.2.2 thorpej if ((error = extendfile(dep, count, NULL, NULL, 0)) && 630 1.1.2.2 thorpej (error != ENOSPC || (ioflag & IO_UNIT))) 631 1.1.2.2 thorpej goto errexit; 632 1.1.2.2 thorpej } 633 1.1.2.2 thorpej 634 1.1.2.2 thorpej if (dep->de_FileSize < uio->uio_offset + resid) { 635 1.1.2.2 thorpej dep->de_FileSize = uio->uio_offset + resid; 636 1.1.2.2 thorpej uvm_vnp_setsize(vp, dep->de_FileSize); 637 1.1.2.2 thorpej extended = 1; 638 1.1.2.2 thorpej } 639 1.1.2.2 thorpej 640 1.1.2.2 thorpej do { 641 1.1.2.2 thorpej oldoff = uio->uio_offset; 642 1.1.2.2 thorpej bytelen = uio->uio_resid; 643 1.1.2.2 thorpej 644 1.1.2.2 thorpej win = ubc_alloc(&vp->v_uobj, oldoff, &bytelen, UBC_WRITE); 645 1.1.2.2 thorpej error = uiomove(win, bytelen, uio); 646 1.1.2.2 thorpej ubc_release(win, 0); 647 1.1.2.2 thorpej if (error) { 648 1.1.2.2 thorpej break; 649 1.1.2.2 thorpej } 650 1.1.2.2 thorpej 651 1.1.2.2 thorpej /* 652 1.1.2.2 thorpej * flush what we just wrote if necessary. 653 1.1.2.2 thorpej * XXXUBC simplistic async flushing. 654 1.1.2.2 thorpej */ 655 1.1.2.2 thorpej 656 1.1.2.2 thorpej if (!async && oldoff >> 16 != uio->uio_offset >> 16) { 657 1.1.2.2 thorpej simple_lock(&vp->v_interlock); 658 1.1.2.2 thorpej error = VOP_PUTPAGES(vp, (oldoff >> 16) << 16, 659 1.1.2.2 thorpej (uio->uio_offset >> 16) << 16, PGO_CLEANIT); 660 1.1.2.2 thorpej } 661 1.1.2.2 thorpej } while (error == 0 && uio->uio_resid > 0); 662 1.1.2.2 thorpej if (error == 0 && ioflag & IO_SYNC) { 663 1.1.2.2 thorpej simple_lock(&vp->v_interlock); 664 1.1.2.2 thorpej error = VOP_PUTPAGES(vp, trunc_page(oldoff), 665 1.1.2.2 thorpej round_page(oldoff + bytelen), PGO_CLEANIT | PGO_SYNCIO); 666 1.1.2.2 thorpej } 667 1.1.2.2 thorpej dep->de_flag |= DE_UPDATE; 668 1.1.2.2 thorpej 669 1.1.2.2 thorpej /* 670 1.1.2.2 thorpej * If the write failed and they want us to, truncate the file back 671 1.1.2.2 thorpej * to the size it was before the write was attempted. 672 1.1.2.2 thorpej */ 673 1.1.2.2 thorpej errexit: 674 1.1.2.2 thorpej if (resid > uio->uio_resid) 675 1.1.2.2 thorpej VN_KNOTE(vp, NOTE_WRITE | (extended ? NOTE_EXTEND : 0)); 676 1.1.2.2 thorpej if (error) { 677 1.1.2.2 thorpej detrunc(dep, osize, ioflag & IO_SYNC, NOCRED, NULL); 678 1.1.2.2 thorpej uio->uio_offset -= resid - uio->uio_resid; 679 1.1.2.2 thorpej uio->uio_resid = resid; 680 1.1.2.2 thorpej } else if ((ioflag & IO_SYNC) == IO_SYNC) 681 1.1.2.2 thorpej error = deupdat(dep, 1); 682 1.1.2.2 thorpej KASSERT(vp->v_size == dep->de_FileSize); 683 1.1.2.2 thorpej return (error); 684 1.1.2.2 thorpej } 685 1.1.2.2 thorpej 686 1.1.2.2 thorpej int 687 1.1.2.2 thorpej msdosfs_update(v) 688 1.1.2.2 thorpej void *v; 689 1.1.2.2 thorpej { 690 1.1.2.2 thorpej struct vop_update_args /* { 691 1.1.2.2 thorpej struct vnode *a_vp; 692 1.1.2.2 thorpej struct timespec *a_access; 693 1.1.2.2 thorpej struct timespec *a_modify; 694 1.1.2.2 thorpej int a_flags; 695 1.1.2.2 thorpej } */ *ap = v; 696 1.1.2.2 thorpej struct buf *bp; 697 1.1.2.2 thorpej struct direntry *dirp; 698 1.1.2.2 thorpej struct denode *dep; 699 1.1.2.2 thorpej int error; 700 1.1.2.2 thorpej struct timespec ts; 701 1.1.2.2 thorpej 702 1.1.2.2 thorpej if (ap->a_vp->v_mount->mnt_flag & MNT_RDONLY) 703 1.1.2.2 thorpej return (0); 704 1.1.2.2 thorpej dep = VTODE(ap->a_vp); 705 1.1.2.2 thorpej TIMEVAL_TO_TIMESPEC(&time, &ts); 706 1.1.2.2 thorpej DETIMES(dep, 707 1.1.2.2 thorpej ap->a_access ? ap->a_access : &ts, 708 1.1.2.2 thorpej ap->a_modify ? ap->a_modify : &ts, &ts); 709 1.1.2.2 thorpej if ((dep->de_flag & DE_MODIFIED) == 0) 710 1.1.2.2 thorpej return (0); 711 1.1.2.2 thorpej dep->de_flag &= ~DE_MODIFIED; 712 1.1.2.2 thorpej if (dep->de_Attributes & ATTR_DIRECTORY) 713 1.1.2.2 thorpej return (0); 714 1.1.2.2 thorpej if (dep->de_refcnt <= 0) 715 1.1.2.2 thorpej return (0); 716 1.1.2.2 thorpej error = readde(dep, &bp, &dirp); 717 1.1.2.2 thorpej if (error) 718 1.1.2.2 thorpej return (error); 719 1.1.2.2 thorpej DE_EXTERNALIZE(dirp, dep); 720 1.1.2.2 thorpej if (ap->a_flags & (UPDATE_WAIT|UPDATE_DIROP)) 721 1.1.2.2 thorpej return (bwrite(bp)); 722 1.1.2.2 thorpej else { 723 1.1.2.2 thorpej bdwrite(bp); 724 1.1.2.2 thorpej return (0); 725 1.1.2.2 thorpej } 726 1.1.2.2 thorpej } 727 1.1.2.2 thorpej 728 1.1.2.2 thorpej /* 729 1.1.2.2 thorpej * Flush the blocks of a file to disk. 730 1.1.2.2 thorpej * 731 1.1.2.2 thorpej * This function is worthless for vnodes that represent directories. Maybe we 732 1.1.2.2 thorpej * could just do a sync if they try an fsync on a directory file. 733 1.1.2.2 thorpej */ 734 1.1.2.2 thorpej int 735 1.1.2.2 thorpej msdosfs_remove(v) 736 1.1.2.2 thorpej void *v; 737 1.1.2.2 thorpej { 738 1.1.2.2 thorpej struct vop_remove_args /* { 739 1.1.2.2 thorpej struct vnode *a_dvp; 740 1.1.2.2 thorpej struct vnode *a_vp; 741 1.1.2.2 thorpej struct componentname *a_cnp; 742 1.1.2.2 thorpej } */ *ap = v; 743 1.1.2.2 thorpej struct denode *dep = VTODE(ap->a_vp); 744 1.1.2.2 thorpej struct denode *ddep = VTODE(ap->a_dvp); 745 1.1.2.2 thorpej int error; 746 1.1.2.2 thorpej 747 1.1.2.2 thorpej if (ap->a_vp->v_type == VDIR) 748 1.1.2.2 thorpej error = EPERM; 749 1.1.2.2 thorpej else 750 1.1.2.2 thorpej error = removede(ddep, dep); 751 1.1.2.2 thorpej #ifdef MSDOSFS_DEBUG 752 1.1.2.2 thorpej printf("msdosfs_remove(), dep %p, v_usecount %d\n", 753 1.1.2.2 thorpej dep, ap->a_vp->v_usecount); 754 1.1.2.2 thorpej #endif 755 1.1.2.2 thorpej VN_KNOTE(ap->a_vp, NOTE_DELETE); 756 1.1.2.2 thorpej VN_KNOTE(ap->a_dvp, NOTE_WRITE); 757 1.1.2.2 thorpej if (ddep == dep) 758 1.1.2.2 thorpej vrele(ap->a_vp); 759 1.1.2.2 thorpej else 760 1.1.2.2 thorpej vput(ap->a_vp); /* causes msdosfs_inactive() to be called 761 1.1.2.2 thorpej * via vrele() */ 762 1.1.2.2 thorpej vput(ap->a_dvp); 763 1.1.2.2 thorpej return (error); 764 1.1.2.2 thorpej } 765 1.1.2.2 thorpej 766 1.1.2.2 thorpej /* 767 1.1.2.2 thorpej * DOS filesystems don't know what links are. But since we already called 768 1.1.2.2 thorpej * msdosfs_lookup() with create and lockparent, the parent is locked so we 769 1.1.2.2 thorpej * have to free it before we return the error. 770 1.1.2.2 thorpej */ 771 1.1.2.2 thorpej int 772 1.1.2.2 thorpej msdosfs_link(v) 773 1.1.2.2 thorpej void *v; 774 1.1.2.2 thorpej { 775 1.1.2.2 thorpej struct vop_link_args /* { 776 1.1.2.2 thorpej struct vnode *a_dvp; 777 1.1.2.2 thorpej struct vnode *a_vp; 778 1.1.2.2 thorpej struct componentname *a_cnp; 779 1.1.2.2 thorpej } */ *ap = v; 780 1.1.2.2 thorpej 781 1.1.2.2 thorpej VOP_ABORTOP(ap->a_dvp, ap->a_cnp); 782 1.1.2.2 thorpej vput(ap->a_dvp); 783 1.1.2.2 thorpej return (EOPNOTSUPP); 784 1.1.2.2 thorpej } 785 1.1.2.2 thorpej 786 1.1.2.2 thorpej /* 787 1.1.2.2 thorpej * Renames on files require moving the denode to a new hash queue since the 788 1.1.2.2 thorpej * denode's location is used to compute which hash queue to put the file 789 1.1.2.2 thorpej * in. Unless it is a rename in place. For example "mv a b". 790 1.1.2.2 thorpej * 791 1.1.2.2 thorpej * What follows is the basic algorithm: 792 1.1.2.2 thorpej * 793 1.1.2.2 thorpej * if (file move) { 794 1.1.2.2 thorpej * if (dest file exists) { 795 1.1.2.2 thorpej * remove dest file 796 1.1.2.2 thorpej * } 797 1.1.2.2 thorpej * if (dest and src in same directory) { 798 1.1.2.2 thorpej * rewrite name in existing directory slot 799 1.1.2.2 thorpej * } else { 800 1.1.2.2 thorpej * write new entry in dest directory 801 1.1.2.2 thorpej * update offset and dirclust in denode 802 1.1.2.2 thorpej * move denode to new hash chain 803 1.1.2.2 thorpej * clear old directory entry 804 1.1.2.2 thorpej * } 805 1.1.2.2 thorpej * } else { 806 1.1.2.2 thorpej * directory move 807 1.1.2.2 thorpej * if (dest directory exists) { 808 1.1.2.2 thorpej * if (dest is not empty) { 809 1.1.2.2 thorpej * return ENOTEMPTY 810 1.1.2.2 thorpej * } 811 1.1.2.2 thorpej * remove dest directory 812 1.1.2.2 thorpej * } 813 1.1.2.2 thorpej * if (dest and src in same directory) { 814 1.1.2.2 thorpej * rewrite name in existing entry 815 1.1.2.2 thorpej * } else { 816 1.1.2.2 thorpej * be sure dest is not a child of src directory 817 1.1.2.2 thorpej * write entry in dest directory 818 1.1.2.2 thorpej * update "." and ".." in moved directory 819 1.1.2.2 thorpej * update offset and dirclust in denode 820 1.1.2.2 thorpej * move denode to new hash chain 821 1.1.2.2 thorpej * clear old directory entry for moved directory 822 1.1.2.2 thorpej * } 823 1.1.2.2 thorpej * } 824 1.1.2.2 thorpej * 825 1.1.2.2 thorpej * On entry: 826 1.1.2.2 thorpej * source's parent directory is unlocked 827 1.1.2.2 thorpej * source file or directory is unlocked 828 1.1.2.2 thorpej * destination's parent directory is locked 829 1.1.2.2 thorpej * destination file or directory is locked if it exists 830 1.1.2.2 thorpej * 831 1.1.2.2 thorpej * On exit: 832 1.1.2.2 thorpej * all denodes should be released 833 1.1.2.2 thorpej * 834 1.1.2.2 thorpej * Notes: 835 1.1.2.2 thorpej * I'm not sure how the memory containing the pathnames pointed at by the 836 1.1.2.2 thorpej * componentname structures is freed, there may be some memory bleeding 837 1.1.2.2 thorpej * for each rename done. 838 1.1.2.2 thorpej */ 839 1.1.2.2 thorpej int 840 1.1.2.2 thorpej msdosfs_rename(v) 841 1.1.2.2 thorpej void *v; 842 1.1.2.2 thorpej { 843 1.1.2.2 thorpej struct vop_rename_args /* { 844 1.1.2.2 thorpej struct vnode *a_fdvp; 845 1.1.2.2 thorpej struct vnode *a_fvp; 846 1.1.2.2 thorpej struct componentname *a_fcnp; 847 1.1.2.2 thorpej struct vnode *a_tdvp; 848 1.1.2.2 thorpej struct vnode *a_tvp; 849 1.1.2.2 thorpej struct componentname *a_tcnp; 850 1.1.2.2 thorpej } */ *ap = v; 851 1.1.2.2 thorpej struct vnode *tvp = ap->a_tvp; 852 1.1.2.2 thorpej struct vnode *tdvp = ap->a_tdvp; 853 1.1.2.2 thorpej struct vnode *fvp = ap->a_fvp; 854 1.1.2.2 thorpej struct vnode *fdvp = ap->a_fdvp; 855 1.1.2.2 thorpej struct componentname *tcnp = ap->a_tcnp; 856 1.1.2.2 thorpej struct componentname *fcnp = ap->a_fcnp; 857 1.1.2.2 thorpej struct proc *p = tcnp->cn_proc; 858 1.1.2.2 thorpej struct denode *ip, *xp, *dp, *zp; 859 1.1.2.2 thorpej u_char toname[11], oldname[11]; 860 1.1.2.2 thorpej u_long from_diroffset, to_diroffset; 861 1.1.2.2 thorpej u_char to_count; 862 1.1.2.2 thorpej int doingdirectory = 0, newparent = 0; 863 1.1.2.2 thorpej int error; 864 1.1.2.2 thorpej u_long cn; 865 1.1.2.2 thorpej daddr_t bn; 866 1.1.2.2 thorpej struct msdosfsmount *pmp; 867 1.1.2.2 thorpej struct direntry *dotdotp; 868 1.1.2.2 thorpej struct buf *bp; 869 1.1.2.2 thorpej int fdvp_dorele = 0; 870 1.1.2.2 thorpej 871 1.1.2.2 thorpej pmp = VFSTOMSDOSFS(fdvp->v_mount); 872 1.1.2.2 thorpej 873 1.1.2.2 thorpej #ifdef DIAGNOSTIC 874 1.1.2.2 thorpej if ((tcnp->cn_flags & HASBUF) == 0 || 875 1.1.2.2 thorpej (fcnp->cn_flags & HASBUF) == 0) 876 1.1.2.2 thorpej panic("msdosfs_rename: no name"); 877 1.1.2.2 thorpej #endif 878 1.1.2.2 thorpej /* 879 1.1.2.2 thorpej * Check for cross-device rename. 880 1.1.2.2 thorpej */ 881 1.1.2.2 thorpej if ((fvp->v_mount != tdvp->v_mount) || 882 1.1.2.2 thorpej (tvp && (fvp->v_mount != tvp->v_mount))) { 883 1.1.2.2 thorpej error = EXDEV; 884 1.1.2.2 thorpej abortit: 885 1.1.2.2 thorpej VOP_ABORTOP(tdvp, tcnp); 886 1.1.2.2 thorpej if (tdvp == tvp) 887 1.1.2.2 thorpej vrele(tdvp); 888 1.1.2.2 thorpej else 889 1.1.2.2 thorpej vput(tdvp); 890 1.1.2.2 thorpej if (tvp) 891 1.1.2.2 thorpej vput(tvp); 892 1.1.2.2 thorpej VOP_ABORTOP(fdvp, fcnp); 893 1.1.2.2 thorpej vrele(fdvp); 894 1.1.2.2 thorpej vrele(fvp); 895 1.1.2.2 thorpej return (error); 896 1.1.2.2 thorpej } 897 1.1.2.2 thorpej 898 1.1.2.2 thorpej /* 899 1.1.2.2 thorpej * If source and dest are the same, do nothing. 900 1.1.2.2 thorpej */ 901 1.1.2.2 thorpej if (tvp == fvp) { 902 1.1.2.2 thorpej error = 0; 903 1.1.2.2 thorpej goto abortit; 904 1.1.2.2 thorpej } 905 1.1.2.2 thorpej 906 1.1.2.2 thorpej /* */ 907 1.1.2.2 thorpej if ((error = vn_lock(fvp, LK_EXCLUSIVE)) != 0) 908 1.1.2.2 thorpej goto abortit; 909 1.1.2.2 thorpej dp = VTODE(fdvp); 910 1.1.2.2 thorpej ip = VTODE(fvp); 911 1.1.2.2 thorpej 912 1.1.2.2 thorpej /* 913 1.1.2.2 thorpej * Be sure we are not renaming ".", "..", or an alias of ".". This 914 1.1.2.2 thorpej * leads to a crippled directory tree. It's pretty tough to do a 915 1.1.2.2 thorpej * "ls" or "pwd" with the "." directory entry missing, and "cd .." 916 1.1.2.2 thorpej * doesn't work if the ".." entry is missing. 917 1.1.2.2 thorpej */ 918 1.1.2.2 thorpej if (ip->de_Attributes & ATTR_DIRECTORY) { 919 1.1.2.2 thorpej /* 920 1.1.2.2 thorpej * Avoid ".", "..", and aliases of "." for obvious reasons. 921 1.1.2.2 thorpej */ 922 1.1.2.2 thorpej if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') || 923 1.1.2.2 thorpej dp == ip || 924 1.1.2.2 thorpej (fcnp->cn_flags & ISDOTDOT) || 925 1.1.2.2 thorpej (tcnp->cn_flags & ISDOTDOT) || 926 1.1.2.2 thorpej (ip->de_flag & DE_RENAME)) { 927 1.1.2.2 thorpej VOP_UNLOCK(fvp, 0); 928 1.1.2.2 thorpej error = EINVAL; 929 1.1.2.2 thorpej goto abortit; 930 1.1.2.2 thorpej } 931 1.1.2.2 thorpej ip->de_flag |= DE_RENAME; 932 1.1.2.2 thorpej doingdirectory++; 933 1.1.2.2 thorpej } 934 1.1.2.2 thorpej VN_KNOTE(fdvp, NOTE_WRITE); /* XXXLUKEM/XXX: right place? */ 935 1.1.2.2 thorpej 936 1.1.2.2 thorpej /* 937 1.1.2.2 thorpej * When the target exists, both the directory 938 1.1.2.2 thorpej * and target vnodes are returned locked. 939 1.1.2.2 thorpej */ 940 1.1.2.2 thorpej dp = VTODE(tdvp); 941 1.1.2.2 thorpej xp = tvp ? VTODE(tvp) : NULL; 942 1.1.2.2 thorpej /* 943 1.1.2.2 thorpej * Remember direntry place to use for destination 944 1.1.2.2 thorpej */ 945 1.1.2.2 thorpej to_diroffset = dp->de_fndoffset; 946 1.1.2.2 thorpej to_count = dp->de_fndcnt; 947 1.1.2.2 thorpej 948 1.1.2.2 thorpej /* 949 1.1.2.2 thorpej * If ".." must be changed (ie the directory gets a new 950 1.1.2.2 thorpej * parent) then the source directory must not be in the 951 1.1.2.2 thorpej * directory hierarchy above the target, as this would 952 1.1.2.2 thorpej * orphan everything below the source directory. Also 953 1.1.2.2 thorpej * the user must have write permission in the source so 954 1.1.2.2 thorpej * as to be able to change "..". We must repeat the call 955 1.1.2.2 thorpej * to namei, as the parent directory is unlocked by the 956 1.1.2.2 thorpej * call to doscheckpath(). 957 1.1.2.2 thorpej */ 958 1.1.2.2 thorpej error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred, p); 959 1.1.2.2 thorpej VOP_UNLOCK(fvp, 0); 960 1.1.2.2 thorpej if (VTODE(fdvp)->de_StartCluster != VTODE(tdvp)->de_StartCluster) 961 1.1.2.2 thorpej newparent = 1; 962 1.1.2.2 thorpej vrele(fdvp); 963 1.1.2.2 thorpej if (doingdirectory && newparent) { 964 1.1.2.2 thorpej if (error) /* write access check above */ 965 1.1.2.2 thorpej goto bad; 966 1.1.2.2 thorpej if (xp != NULL) 967 1.1.2.2 thorpej vput(tvp); 968 1.1.2.2 thorpej /* 969 1.1.2.2 thorpej * doscheckpath() vput()'s dp, 970 1.1.2.2 thorpej * so we have to do a relookup afterwards 971 1.1.2.2 thorpej */ 972 1.1.2.2 thorpej if ((error = doscheckpath(ip, dp)) != 0) 973 1.1.2.2 thorpej goto out; 974 1.1.2.2 thorpej if ((tcnp->cn_flags & SAVESTART) == 0) 975 1.1.2.2 thorpej panic("msdosfs_rename: lost to startdir"); 976 1.1.2.2 thorpej if ((error = relookup(tdvp, &tvp, tcnp)) != 0) 977 1.1.2.2 thorpej goto out; 978 1.1.2.2 thorpej dp = VTODE(tdvp); 979 1.1.2.2 thorpej xp = tvp ? VTODE(tvp) : NULL; 980 1.1.2.2 thorpej } 981 1.1.2.2 thorpej 982 1.1.2.2 thorpej if (xp != NULL) { 983 1.1.2.2 thorpej /* 984 1.1.2.2 thorpej * Target must be empty if a directory and have no links 985 1.1.2.2 thorpej * to it. Also, ensure source and target are compatible 986 1.1.2.2 thorpej * (both directories, or both not directories). 987 1.1.2.2 thorpej */ 988 1.1.2.2 thorpej if (xp->de_Attributes & ATTR_DIRECTORY) { 989 1.1.2.2 thorpej if (!dosdirempty(xp)) { 990 1.1.2.2 thorpej error = ENOTEMPTY; 991 1.1.2.2 thorpej goto bad; 992 1.1.2.2 thorpej } 993 1.1.2.2 thorpej if (!doingdirectory) { 994 1.1.2.2 thorpej error = ENOTDIR; 995 1.1.2.2 thorpej goto bad; 996 1.1.2.2 thorpej } 997 1.1.2.2 thorpej } else if (doingdirectory) { 998 1.1.2.2 thorpej error = EISDIR; 999 1.1.2.2 thorpej goto bad; 1000 1.1.2.2 thorpej } 1001 1.1.2.2 thorpej if ((error = removede(dp, xp)) != 0) 1002 1.1.2.2 thorpej goto bad; 1003 1.1.2.2 thorpej VN_KNOTE(tdvp, NOTE_WRITE); 1004 1.1.2.2 thorpej VN_KNOTE(tvp, NOTE_DELETE); 1005 1.1.2.2 thorpej cache_purge(tvp); 1006 1.1.2.2 thorpej vput(tvp); 1007 1.1.2.2 thorpej xp = NULL; 1008 1.1.2.2 thorpej } 1009 1.1.2.2 thorpej 1010 1.1.2.2 thorpej /* 1011 1.1.2.2 thorpej * Convert the filename in tcnp into a dos filename. We copy this 1012 1.1.2.2 thorpej * into the denode and directory entry for the destination 1013 1.1.2.2 thorpej * file/directory. 1014 1.1.2.2 thorpej */ 1015 1.1.2.2 thorpej if ((error = uniqdosname(VTODE(tdvp), tcnp, toname)) != 0) 1016 1.1.2.2 thorpej goto abortit; 1017 1.1.2.2 thorpej 1018 1.1.2.2 thorpej /* 1019 1.1.2.2 thorpej * Since from wasn't locked at various places above, 1020 1.1.2.2 thorpej * have to do a relookup here. 1021 1.1.2.2 thorpej */ 1022 1.1.2.2 thorpej fcnp->cn_flags &= ~MODMASK; 1023 1.1.2.2 thorpej fcnp->cn_flags |= LOCKPARENT | LOCKLEAF; 1024 1.1.2.2 thorpej if ((fcnp->cn_flags & SAVESTART) == 0) 1025 1.1.2.2 thorpej panic("msdosfs_rename: lost from startdir"); 1026 1.1.2.2 thorpej if (!newparent) 1027 1.1.2.2 thorpej VOP_UNLOCK(tdvp, 0); 1028 1.1.2.2 thorpej (void) relookup(fdvp, &fvp, fcnp); 1029 1.1.2.2 thorpej if (fvp == NULL) { 1030 1.1.2.2 thorpej /* 1031 1.1.2.2 thorpej * From name has disappeared. 1032 1.1.2.2 thorpej */ 1033 1.1.2.2 thorpej if (doingdirectory) 1034 1.1.2.2 thorpej panic("rename: lost dir entry"); 1035 1.1.2.2 thorpej vrele(ap->a_fvp); 1036 1.1.2.2 thorpej if (newparent) 1037 1.1.2.2 thorpej VOP_UNLOCK(tdvp, 0); 1038 1.1.2.2 thorpej vrele(tdvp); 1039 1.1.2.2 thorpej return 0; 1040 1.1.2.2 thorpej } 1041 1.1.2.2 thorpej fdvp_dorele = 1; 1042 1.1.2.2 thorpej xp = VTODE(fvp); 1043 1.1.2.2 thorpej zp = VTODE(fdvp); 1044 1.1.2.2 thorpej from_diroffset = zp->de_fndoffset; 1045 1.1.2.2 thorpej 1046 1.1.2.2 thorpej /* 1047 1.1.2.2 thorpej * Ensure that the directory entry still exists and has not 1048 1.1.2.2 thorpej * changed till now. If the source is a file the entry may 1049 1.1.2.2 thorpej * have been unlinked or renamed. In either case there is 1050 1.1.2.2 thorpej * no further work to be done. If the source is a directory 1051 1.1.2.2 thorpej * then it cannot have been rmdir'ed or renamed; this is 1052 1.1.2.2 thorpej * prohibited by the DE_RENAME flag. 1053 1.1.2.2 thorpej */ 1054 1.1.2.2 thorpej if (xp != ip) { 1055 1.1.2.2 thorpej if (doingdirectory) 1056 1.1.2.2 thorpej panic("rename: lost dir entry"); 1057 1.1.2.2 thorpej vrele(ap->a_fvp); 1058 1.1.2.2 thorpej VOP_UNLOCK(fvp, 0); 1059 1.1.2.2 thorpej if (newparent) 1060 1.1.2.2 thorpej VOP_UNLOCK(fdvp, 0); 1061 1.1.2.2 thorpej xp = NULL; 1062 1.1.2.2 thorpej } else { 1063 1.1.2.2 thorpej vrele(fvp); 1064 1.1.2.2 thorpej xp = NULL; 1065 1.1.2.2 thorpej 1066 1.1.2.2 thorpej /* 1067 1.1.2.2 thorpej * First write a new entry in the destination 1068 1.1.2.2 thorpej * directory and mark the entry in the source directory 1069 1.1.2.2 thorpej * as deleted. Then move the denode to the correct hash 1070 1.1.2.2 thorpej * chain for its new location in the filesystem. And, if 1071 1.1.2.2 thorpej * we moved a directory, then update its .. entry to point 1072 1.1.2.2 thorpej * to the new parent directory. 1073 1.1.2.2 thorpej */ 1074 1.1.2.2 thorpej memcpy(oldname, ip->de_Name, 11); 1075 1.1.2.2 thorpej memcpy(ip->de_Name, toname, 11); /* update denode */ 1076 1.1.2.2 thorpej dp->de_fndoffset = to_diroffset; 1077 1.1.2.2 thorpej dp->de_fndcnt = to_count; 1078 1.1.2.2 thorpej error = createde(ip, dp, (struct denode **)0, tcnp); 1079 1.1.2.2 thorpej if (error) { 1080 1.1.2.2 thorpej memcpy(ip->de_Name, oldname, 11); 1081 1.1.2.2 thorpej if (newparent) 1082 1.1.2.2 thorpej VOP_UNLOCK(fdvp, 0); 1083 1.1.2.2 thorpej VOP_UNLOCK(fvp, 0); 1084 1.1.2.2 thorpej goto bad; 1085 1.1.2.2 thorpej } 1086 1.1.2.2 thorpej ip->de_refcnt++; 1087 1.1.2.2 thorpej zp->de_fndoffset = from_diroffset; 1088 1.1.2.2 thorpej if ((error = removede(zp, ip)) != 0) { 1089 1.1.2.2 thorpej /* XXX should really panic here, fs is corrupt */ 1090 1.1.2.2 thorpej if (newparent) 1091 1.1.2.2 thorpej VOP_UNLOCK(fdvp, 0); 1092 1.1.2.2 thorpej VOP_UNLOCK(fvp, 0); 1093 1.1.2.2 thorpej goto bad; 1094 1.1.2.2 thorpej } 1095 1.1.2.2 thorpej cache_purge(fvp); 1096 1.1.2.2 thorpej if (!doingdirectory) { 1097 1.1.2.2 thorpej error = pcbmap(dp, de_cluster(pmp, to_diroffset), 0, 1098 1.1.2.2 thorpej &ip->de_dirclust, 0); 1099 1.1.2.2 thorpej if (error) { 1100 1.1.2.2 thorpej /* XXX should really panic here, fs is corrupt */ 1101 1.1.2.2 thorpej if (newparent) 1102 1.1.2.2 thorpej VOP_UNLOCK(fdvp, 0); 1103 1.1.2.2 thorpej VOP_UNLOCK(fvp, 0); 1104 1.1.2.2 thorpej goto bad; 1105 1.1.2.2 thorpej } 1106 1.1.2.2 thorpej ip->de_diroffset = to_diroffset; 1107 1.1.2.2 thorpej if (ip->de_dirclust != MSDOSFSROOT) 1108 1.1.2.2 thorpej ip->de_diroffset &= pmp->pm_crbomask; 1109 1.1.2.2 thorpej } 1110 1.1.2.2 thorpej reinsert(ip); 1111 1.1.2.2 thorpej if (newparent) 1112 1.1.2.2 thorpej VOP_UNLOCK(fdvp, 0); 1113 1.1.2.2 thorpej } 1114 1.1.2.2 thorpej 1115 1.1.2.2 thorpej /* 1116 1.1.2.2 thorpej * If we moved a directory to a new parent directory, then we must 1117 1.1.2.2 thorpej * fixup the ".." entry in the moved directory. 1118 1.1.2.2 thorpej */ 1119 1.1.2.2 thorpej if (doingdirectory && newparent) { 1120 1.1.2.2 thorpej cn = ip->de_StartCluster; 1121 1.1.2.2 thorpej if (cn == MSDOSFSROOT) { 1122 1.1.2.2 thorpej /* this should never happen */ 1123 1.1.2.2 thorpej panic("msdosfs_rename: updating .. in root directory?"); 1124 1.1.2.2 thorpej } else 1125 1.1.2.2 thorpej bn = cntobn(pmp, cn); 1126 1.1.2.2 thorpej error = bread(pmp->pm_devvp, bn, pmp->pm_bpcluster, 1127 1.1.2.2 thorpej NOCRED, &bp); 1128 1.1.2.2 thorpej if (error) { 1129 1.1.2.2 thorpej /* XXX should really panic here, fs is corrupt */ 1130 1.1.2.2 thorpej brelse(bp); 1131 1.1.2.2 thorpej VOP_UNLOCK(fvp, 0); 1132 1.1.2.2 thorpej goto bad; 1133 1.1.2.2 thorpej } 1134 1.1.2.2 thorpej dotdotp = (struct direntry *)bp->b_data + 1; 1135 1.1.2.2 thorpej putushort(dotdotp->deStartCluster, dp->de_StartCluster); 1136 1.1.2.2 thorpej if (FAT32(pmp)) { 1137 1.1.2.2 thorpej putushort(dotdotp->deHighClust, 1138 1.1.2.2 thorpej dp->de_StartCluster >> 16); 1139 1.1.2.2 thorpej } 1140 1.1.2.2 thorpej if ((error = bwrite(bp)) != 0) { 1141 1.1.2.2 thorpej /* XXX should really panic here, fs is corrupt */ 1142 1.1.2.2 thorpej VOP_UNLOCK(fvp, 0); 1143 1.1.2.2 thorpej goto bad; 1144 1.1.2.2 thorpej } 1145 1.1.2.2 thorpej } 1146 1.1.2.2 thorpej 1147 1.1.2.2 thorpej VN_KNOTE(fvp, NOTE_RENAME); 1148 1.1.2.2 thorpej VOP_UNLOCK(fvp, 0); 1149 1.1.2.2 thorpej bad: 1150 1.1.2.2 thorpej if (xp) 1151 1.1.2.2 thorpej vput(tvp); 1152 1.1.2.2 thorpej vput(tdvp); 1153 1.1.2.2 thorpej out: 1154 1.1.2.2 thorpej ip->de_flag &= ~DE_RENAME; 1155 1.1.2.2 thorpej if (fdvp_dorele) 1156 1.1.2.2 thorpej vrele(fdvp); 1157 1.1.2.2 thorpej vrele(fvp); 1158 1.1.2.2 thorpej return (error); 1159 1.1.2.2 thorpej 1160 1.1.2.2 thorpej } 1161 1.1.2.2 thorpej 1162 1.1.2.2 thorpej struct { 1163 1.1.2.2 thorpej struct direntry dot; 1164 1.1.2.2 thorpej struct direntry dotdot; 1165 1.1.2.2 thorpej } dosdirtemplate = { 1166 1.1.2.2 thorpej { ". ", " ", /* the . entry */ 1167 1.1.2.2 thorpej ATTR_DIRECTORY, /* file attribute */ 1168 1.1.2.2 thorpej 0, /* reserved */ 1169 1.1.2.2 thorpej 0, { 0, 0 }, { 0, 0 }, /* create time & date */ 1170 1.1.2.2 thorpej { 0, 0 }, /* access date */ 1171 1.1.2.2 thorpej { 0, 0 }, /* high bits of start cluster */ 1172 1.1.2.2 thorpej { 210, 4 }, { 210, 4 }, /* modify time & date */ 1173 1.1.2.2 thorpej { 0, 0 }, /* startcluster */ 1174 1.1.2.2 thorpej { 0, 0, 0, 0 } /* filesize */ 1175 1.1.2.2 thorpej }, 1176 1.1.2.2 thorpej { ".. ", " ", /* the .. entry */ 1177 1.1.2.2 thorpej ATTR_DIRECTORY, /* file attribute */ 1178 1.1.2.2 thorpej 0, /* reserved */ 1179 1.1.2.2 thorpej 0, { 0, 0 }, { 0, 0 }, /* create time & date */ 1180 1.1.2.2 thorpej { 0, 0 }, /* access date */ 1181 1.1.2.2 thorpej { 0, 0 }, /* high bits of start cluster */ 1182 1.1.2.2 thorpej { 210, 4 }, { 210, 4 }, /* modify time & date */ 1183 1.1.2.2 thorpej { 0, 0 }, /* startcluster */ 1184 1.1.2.2 thorpej { 0, 0, 0, 0 } /* filesize */ 1185 1.1.2.2 thorpej } 1186 1.1.2.2 thorpej }; 1187 1.1.2.2 thorpej 1188 1.1.2.2 thorpej int 1189 1.1.2.2 thorpej msdosfs_mkdir(v) 1190 1.1.2.2 thorpej void *v; 1191 1.1.2.2 thorpej { 1192 1.1.2.2 thorpej struct vop_mkdir_args /* { 1193 1.1.2.2 thorpej struct vnode *a_dvp; 1194 1.1.2.2 thorpej struvt vnode **a_vpp; 1195 1.1.2.2 thorpej struvt componentname *a_cnp; 1196 1.1.2.2 thorpej struct vattr *a_vap; 1197 1.1.2.2 thorpej } */ *ap = v; 1198 1.1.2.2 thorpej struct componentname *cnp = ap->a_cnp; 1199 1.1.2.2 thorpej struct denode ndirent; 1200 1.1.2.2 thorpej struct denode *dep; 1201 1.1.2.2 thorpej struct denode *pdep = VTODE(ap->a_dvp); 1202 1.1.2.2 thorpej int error; 1203 1.1.2.2 thorpej int bn; 1204 1.1.2.2 thorpej u_long newcluster, pcl; 1205 1.1.2.2 thorpej struct direntry *denp; 1206 1.1.2.2 thorpej struct msdosfsmount *pmp = pdep->de_pmp; 1207 1.1.2.2 thorpej struct buf *bp; 1208 1.1.2.2 thorpej struct timespec ts; 1209 1.1.2.2 thorpej int async = pdep->de_pmp->pm_mountp->mnt_flag & MNT_ASYNC; 1210 1.1.2.2 thorpej 1211 1.1.2.2 thorpej /* 1212 1.1.2.2 thorpej * If this is the root directory and there is no space left we 1213 1.1.2.2 thorpej * can't do anything. This is because the root directory can not 1214 1.1.2.2 thorpej * change size. 1215 1.1.2.2 thorpej */ 1216 1.1.2.2 thorpej if (pdep->de_StartCluster == MSDOSFSROOT 1217 1.1.2.2 thorpej && pdep->de_fndoffset >= pdep->de_FileSize) { 1218 1.1.2.2 thorpej error = ENOSPC; 1219 1.1.2.2 thorpej goto bad2; 1220 1.1.2.2 thorpej } 1221 1.1.2.2 thorpej 1222 1.1.2.2 thorpej /* 1223 1.1.2.2 thorpej * Allocate a cluster to hold the about to be created directory. 1224 1.1.2.2 thorpej */ 1225 1.1.2.2 thorpej error = clusteralloc(pmp, 0, 1, &newcluster, NULL); 1226 1.1.2.2 thorpej if (error) 1227 1.1.2.2 thorpej goto bad2; 1228 1.1.2.2 thorpej 1229 1.1.2.2 thorpej memset(&ndirent, 0, sizeof(ndirent)); 1230 1.1.2.2 thorpej ndirent.de_pmp = pmp; 1231 1.1.2.2 thorpej ndirent.de_flag = DE_ACCESS | DE_CREATE | DE_UPDATE; 1232 1.1.2.2 thorpej TIMEVAL_TO_TIMESPEC(&time, &ts); 1233 1.1.2.2 thorpej DETIMES(&ndirent, &ts, &ts, &ts); 1234 1.1.2.2 thorpej 1235 1.1.2.2 thorpej /* 1236 1.1.2.2 thorpej * Now fill the cluster with the "." and ".." entries. And write 1237 1.1.2.2 thorpej * the cluster to disk. This way it is there for the parent 1238 1.1.2.2 thorpej * directory to be pointing at if there were a crash. 1239 1.1.2.2 thorpej */ 1240 1.1.2.2 thorpej bn = cntobn(pmp, newcluster); 1241 1.1.2.2 thorpej /* always succeeds */ 1242 1.1.2.2 thorpej bp = getblk(pmp->pm_devvp, bn, pmp->pm_bpcluster, 0, 0); 1243 1.1.2.2 thorpej memset(bp->b_data, 0, pmp->pm_bpcluster); 1244 1.1.2.2 thorpej memcpy(bp->b_data, &dosdirtemplate, sizeof dosdirtemplate); 1245 1.1.2.2 thorpej denp = (struct direntry *)bp->b_data; 1246 1.1.2.2 thorpej putushort(denp[0].deStartCluster, newcluster); 1247 1.1.2.2 thorpej putushort(denp[0].deCDate, ndirent.de_CDate); 1248 1.1.2.2 thorpej putushort(denp[0].deCTime, ndirent.de_CTime); 1249 1.1.2.2 thorpej denp[0].deCHundredth = ndirent.de_CHun; 1250 1.1.2.2 thorpej putushort(denp[0].deADate, ndirent.de_ADate); 1251 1.1.2.2 thorpej putushort(denp[0].deMDate, ndirent.de_MDate); 1252 1.1.2.2 thorpej putushort(denp[0].deMTime, ndirent.de_MTime); 1253 1.1.2.2 thorpej pcl = pdep->de_StartCluster; 1254 1.1.2.2 thorpej if (FAT32(pmp) && pcl == pmp->pm_rootdirblk) 1255 1.1.2.2 thorpej pcl = 0; 1256 1.1.2.2 thorpej putushort(denp[1].deStartCluster, pcl); 1257 1.1.2.2 thorpej putushort(denp[1].deCDate, ndirent.de_CDate); 1258 1.1.2.2 thorpej putushort(denp[1].deCTime, ndirent.de_CTime); 1259 1.1.2.2 thorpej denp[1].deCHundredth = ndirent.de_CHun; 1260 1.1.2.2 thorpej putushort(denp[1].deADate, ndirent.de_ADate); 1261 1.1.2.2 thorpej putushort(denp[1].deMDate, ndirent.de_MDate); 1262 1.1.2.2 thorpej putushort(denp[1].deMTime, ndirent.de_MTime); 1263 1.1.2.2 thorpej if (FAT32(pmp)) { 1264 1.1.2.2 thorpej putushort(denp[0].deHighClust, newcluster >> 16); 1265 1.1.2.2 thorpej putushort(denp[1].deHighClust, pdep->de_StartCluster >> 16); 1266 1.1.2.2 thorpej } 1267 1.1.2.2 thorpej 1268 1.1.2.2 thorpej if (async) 1269 1.1.2.2 thorpej bdwrite(bp); 1270 1.1.2.2 thorpej else if ((error = bwrite(bp)) != 0) 1271 1.1.2.2 thorpej goto bad; 1272 1.1.2.2 thorpej 1273 1.1.2.2 thorpej /* 1274 1.1.2.2 thorpej * Now build up a directory entry pointing to the newly allocated 1275 1.1.2.2 thorpej * cluster. This will be written to an empty slot in the parent 1276 1.1.2.2 thorpej * directory. 1277 1.1.2.2 thorpej */ 1278 1.1.2.2 thorpej #ifdef DIAGNOSTIC 1279 1.1.2.2 thorpej if ((cnp->cn_flags & HASBUF) == 0) 1280 1.1.2.2 thorpej panic("msdosfs_mkdir: no name"); 1281 1.1.2.2 thorpej #endif 1282 1.1.2.2 thorpej if ((error = uniqdosname(pdep, cnp, ndirent.de_Name)) != 0) 1283 1.1.2.2 thorpej goto bad; 1284 1.1.2.2 thorpej 1285 1.1.2.2 thorpej ndirent.de_Attributes = ATTR_DIRECTORY; 1286 1.1.2.2 thorpej ndirent.de_StartCluster = newcluster; 1287 1.1.2.2 thorpej ndirent.de_FileSize = 0; 1288 1.1.2.2 thorpej ndirent.de_dev = pdep->de_dev; 1289 1.1.2.2 thorpej ndirent.de_devvp = pdep->de_devvp; 1290 1.1.2.2 thorpej if ((error = createde(&ndirent, pdep, &dep, cnp)) != 0) 1291 1.1.2.2 thorpej goto bad; 1292 1.1.2.2 thorpej if ((cnp->cn_flags & SAVESTART) == 0) 1293 1.1.2.2 thorpej PNBUF_PUT(cnp->cn_pnbuf); 1294 1.1.2.2 thorpej VN_KNOTE(ap->a_dvp, NOTE_WRITE | NOTE_LINK); 1295 1.1.2.2 thorpej vput(ap->a_dvp); 1296 1.1.2.2 thorpej *ap->a_vpp = DETOV(dep); 1297 1.1.2.2 thorpej return (0); 1298 1.1.2.2 thorpej 1299 1.1.2.2 thorpej bad: 1300 1.1.2.2 thorpej clusterfree(pmp, newcluster, NULL); 1301 1.1.2.2 thorpej bad2: 1302 1.1.2.2 thorpej PNBUF_PUT(cnp->cn_pnbuf); 1303 1.1.2.2 thorpej vput(ap->a_dvp); 1304 1.1.2.2 thorpej return (error); 1305 1.1.2.2 thorpej } 1306 1.1.2.2 thorpej 1307 1.1.2.2 thorpej int 1308 1.1.2.2 thorpej msdosfs_rmdir(v) 1309 1.1.2.2 thorpej void *v; 1310 1.1.2.2 thorpej { 1311 1.1.2.2 thorpej struct vop_rmdir_args /* { 1312 1.1.2.2 thorpej struct vnode *a_dvp; 1313 1.1.2.2 thorpej struct vnode *a_vp; 1314 1.1.2.2 thorpej struct componentname *a_cnp; 1315 1.1.2.2 thorpej } */ *ap = v; 1316 1.1.2.2 thorpej struct vnode *vp = ap->a_vp; 1317 1.1.2.2 thorpej struct vnode *dvp = ap->a_dvp; 1318 1.1.2.2 thorpej struct componentname *cnp = ap->a_cnp; 1319 1.1.2.2 thorpej struct denode *ip, *dp; 1320 1.1.2.2 thorpej int error; 1321 1.1.2.2 thorpej 1322 1.1.2.2 thorpej ip = VTODE(vp); 1323 1.1.2.2 thorpej dp = VTODE(dvp); 1324 1.1.2.2 thorpej /* 1325 1.1.2.2 thorpej * No rmdir "." please. 1326 1.1.2.2 thorpej */ 1327 1.1.2.2 thorpej if (dp == ip) { 1328 1.1.2.2 thorpej vrele(dvp); 1329 1.1.2.2 thorpej vput(vp); 1330 1.1.2.2 thorpej return (EINVAL); 1331 1.1.2.2 thorpej } 1332 1.1.2.2 thorpej /* 1333 1.1.2.2 thorpej * Verify the directory is empty (and valid). 1334 1.1.2.2 thorpej * (Rmdir ".." won't be valid since 1335 1.1.2.2 thorpej * ".." will contain a reference to 1336 1.1.2.2 thorpej * the current directory and thus be 1337 1.1.2.2 thorpej * non-empty.) 1338 1.1.2.2 thorpej */ 1339 1.1.2.2 thorpej error = 0; 1340 1.1.2.2 thorpej if (!dosdirempty(ip) || ip->de_flag & DE_RENAME) { 1341 1.1.2.2 thorpej error = ENOTEMPTY; 1342 1.1.2.2 thorpej goto out; 1343 1.1.2.2 thorpej } 1344 1.1.2.2 thorpej /* 1345 1.1.2.2 thorpej * Delete the entry from the directory. For dos filesystems this 1346 1.1.2.2 thorpej * gets rid of the directory entry on disk, the in memory copy 1347 1.1.2.2 thorpej * still exists but the de_refcnt is <= 0. This prevents it from 1348 1.1.2.2 thorpej * being found by deget(). When the vput() on dep is done we give 1349 1.1.2.2 thorpej * up access and eventually msdosfs_reclaim() will be called which 1350 1.1.2.2 thorpej * will remove it from the denode cache. 1351 1.1.2.2 thorpej */ 1352 1.1.2.2 thorpej if ((error = removede(dp, ip)) != 0) 1353 1.1.2.2 thorpej goto out; 1354 1.1.2.2 thorpej /* 1355 1.1.2.2 thorpej * This is where we decrement the link count in the parent 1356 1.1.2.2 thorpej * directory. Since dos filesystems don't do this we just purge 1357 1.1.2.2 thorpej * the name cache and let go of the parent directory denode. 1358 1.1.2.2 thorpej */ 1359 1.1.2.2 thorpej VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); 1360 1.1.2.2 thorpej cache_purge(dvp); 1361 1.1.2.2 thorpej vput(dvp); 1362 1.1.2.2 thorpej dvp = NULL; 1363 1.1.2.2 thorpej /* 1364 1.1.2.2 thorpej * Truncate the directory that is being deleted. 1365 1.1.2.2 thorpej */ 1366 1.1.2.2 thorpej error = detrunc(ip, (u_long)0, IO_SYNC, cnp->cn_cred, cnp->cn_proc); 1367 1.1.2.2 thorpej cache_purge(vp); 1368 1.1.2.2 thorpej out: 1369 1.1.2.2 thorpej VN_KNOTE(vp, NOTE_DELETE); 1370 1.1.2.2 thorpej if (dvp) 1371 1.1.2.2 thorpej vput(dvp); 1372 1.1.2.2 thorpej vput(vp); 1373 1.1.2.2 thorpej return (error); 1374 1.1.2.2 thorpej } 1375 1.1.2.2 thorpej 1376 1.1.2.2 thorpej /* 1377 1.1.2.2 thorpej * DOS filesystems don't know what symlinks are. 1378 1.1.2.2 thorpej */ 1379 1.1.2.2 thorpej int 1380 1.1.2.2 thorpej msdosfs_symlink(v) 1381 1.1.2.2 thorpej void *v; 1382 1.1.2.2 thorpej { 1383 1.1.2.2 thorpej struct vop_symlink_args /* { 1384 1.1.2.2 thorpej struct vnode *a_dvp; 1385 1.1.2.2 thorpej struct vnode **a_vpp; 1386 1.1.2.2 thorpej struct componentname *a_cnp; 1387 1.1.2.2 thorpej struct vattr *a_vap; 1388 1.1.2.2 thorpej char *a_target; 1389 1.1.2.2 thorpej } */ *ap = v; 1390 1.1.2.2 thorpej 1391 1.1.2.2 thorpej VOP_ABORTOP(ap->a_dvp, ap->a_cnp); 1392 1.1.2.2 thorpej vput(ap->a_dvp); 1393 1.1.2.2 thorpej return (EOPNOTSUPP); 1394 1.1.2.2 thorpej } 1395 1.1.2.2 thorpej 1396 1.1.2.2 thorpej int 1397 1.1.2.2 thorpej msdosfs_readdir(v) 1398 1.1.2.2 thorpej void *v; 1399 1.1.2.2 thorpej { 1400 1.1.2.2 thorpej struct vop_readdir_args /* { 1401 1.1.2.2 thorpej struct vnode *a_vp; 1402 1.1.2.2 thorpej struct uio *a_uio; 1403 1.1.2.2 thorpej struct ucred *a_cred; 1404 1.1.2.2 thorpej int *a_eofflag; 1405 1.1.2.2 thorpej off_t **a_cookies; 1406 1.1.2.2 thorpej int *a_ncookies; 1407 1.1.2.2 thorpej } */ *ap = v; 1408 1.1.2.2 thorpej int error = 0; 1409 1.1.2.2 thorpej int diff; 1410 1.1.2.2 thorpej long n; 1411 1.1.2.2 thorpej int blsize; 1412 1.1.2.2 thorpej long on; 1413 1.1.2.2 thorpej long lost; 1414 1.1.2.2 thorpej long count; 1415 1.1.2.2 thorpej u_long cn; 1416 1.1.2.2 thorpej u_long fileno; 1417 1.1.2.2 thorpej u_long dirsperblk; 1418 1.1.2.2 thorpej long bias = 0; 1419 1.1.2.2 thorpej daddr_t bn, lbn; 1420 1.1.2.2 thorpej struct buf *bp; 1421 1.1.2.2 thorpej struct denode *dep = VTODE(ap->a_vp); 1422 1.1.2.2 thorpej struct msdosfsmount *pmp = dep->de_pmp; 1423 1.1.2.2 thorpej struct direntry *dentp; 1424 1.1.2.2 thorpej struct dirent dirbuf; 1425 1.1.2.2 thorpej struct uio *uio = ap->a_uio; 1426 1.1.2.2 thorpej off_t *cookies = NULL; 1427 1.1.2.2 thorpej int ncookies = 0, nc = 0; 1428 1.1.2.2 thorpej off_t offset, uio_off; 1429 1.1.2.2 thorpej int chksum = -1; 1430 1.1.2.2 thorpej 1431 1.1.2.2 thorpej #ifdef MSDOSFS_DEBUG 1432 1.1.2.2 thorpej printf("msdosfs_readdir(): vp %p, uio %p, cred %p, eofflagp %p\n", 1433 1.1.2.2 thorpej ap->a_vp, uio, ap->a_cred, ap->a_eofflag); 1434 1.1.2.2 thorpej #endif 1435 1.1.2.2 thorpej 1436 1.1.2.2 thorpej /* 1437 1.1.2.2 thorpej * msdosfs_readdir() won't operate properly on regular files since 1438 1.1.2.2 thorpej * it does i/o only with the filesystem vnode, and hence can 1439 1.1.2.2 thorpej * retrieve the wrong block from the buffer cache for a plain file. 1440 1.1.2.2 thorpej * So, fail attempts to readdir() on a plain file. 1441 1.1.2.2 thorpej */ 1442 1.1.2.2 thorpej if ((dep->de_Attributes & ATTR_DIRECTORY) == 0) 1443 1.1.2.2 thorpej return (ENOTDIR); 1444 1.1.2.2 thorpej 1445 1.1.2.2 thorpej /* 1446 1.1.2.2 thorpej * To be safe, initialize dirbuf 1447 1.1.2.2 thorpej */ 1448 1.1.2.2 thorpej memset(dirbuf.d_name, 0, sizeof(dirbuf.d_name)); 1449 1.1.2.2 thorpej 1450 1.1.2.2 thorpej /* 1451 1.1.2.2 thorpej * If the user buffer is smaller than the size of one dos directory 1452 1.1.2.2 thorpej * entry or the file offset is not a multiple of the size of a 1453 1.1.2.2 thorpej * directory entry, then we fail the read. 1454 1.1.2.2 thorpej */ 1455 1.1.2.2 thorpej count = uio->uio_resid & ~(sizeof(struct direntry) - 1); 1456 1.1.2.2 thorpej offset = uio->uio_offset; 1457 1.1.2.2 thorpej if (count < sizeof(struct direntry) || 1458 1.1.2.2 thorpej (offset & (sizeof(struct direntry) - 1))) 1459 1.1.2.2 thorpej return (EINVAL); 1460 1.1.2.2 thorpej lost = uio->uio_resid - count; 1461 1.1.2.2 thorpej uio->uio_resid = count; 1462 1.1.2.2 thorpej uio_off = uio->uio_offset; 1463 1.1.2.2 thorpej 1464 1.1.2.2 thorpej if (ap->a_ncookies) { 1465 1.1.2.2 thorpej nc = uio->uio_resid / 16; 1466 1.1.2.2 thorpej cookies = malloc(nc * sizeof (off_t), M_TEMP, M_WAITOK); 1467 1.1.2.2 thorpej *ap->a_cookies = cookies; 1468 1.1.2.2 thorpej } 1469 1.1.2.2 thorpej 1470 1.1.2.2 thorpej dirsperblk = pmp->pm_BytesPerSec / sizeof(struct direntry); 1471 1.1.2.2 thorpej 1472 1.1.2.2 thorpej /* 1473 1.1.2.2 thorpej * If they are reading from the root directory then, we simulate 1474 1.1.2.2 thorpej * the . and .. entries since these don't exist in the root 1475 1.1.2.2 thorpej * directory. We also set the offset bias to make up for having to 1476 1.1.2.2 thorpej * simulate these entries. By this I mean that at file offset 64 we 1477 1.1.2.2 thorpej * read the first entry in the root directory that lives on disk. 1478 1.1.2.2 thorpej */ 1479 1.1.2.2 thorpej if (dep->de_StartCluster == MSDOSFSROOT 1480 1.1.2.2 thorpej || (FAT32(pmp) && dep->de_StartCluster == pmp->pm_rootdirblk)) { 1481 1.1.2.2 thorpej #if 0 1482 1.1.2.2 thorpej printf("msdosfs_readdir(): going after . or .. in root dir, offset %d\n", 1483 1.1.2.2 thorpej offset); 1484 1.1.2.2 thorpej #endif 1485 1.1.2.2 thorpej bias = 2 * sizeof(struct direntry); 1486 1.1.2.2 thorpej if (offset < bias) { 1487 1.1.2.2 thorpej for (n = (int)offset / sizeof(struct direntry); 1488 1.1.2.2 thorpej n < 2; n++) { 1489 1.1.2.2 thorpej if (FAT32(pmp)) 1490 1.1.2.2 thorpej dirbuf.d_fileno = cntobn(pmp, 1491 1.1.2.2 thorpej pmp->pm_rootdirblk) 1492 1.1.2.2 thorpej * dirsperblk; 1493 1.1.2.2 thorpej else 1494 1.1.2.2 thorpej dirbuf.d_fileno = 1; 1495 1.1.2.2 thorpej dirbuf.d_type = DT_DIR; 1496 1.1.2.2 thorpej switch (n) { 1497 1.1.2.2 thorpej case 0: 1498 1.1.2.2 thorpej dirbuf.d_namlen = 1; 1499 1.1.2.2 thorpej strcpy(dirbuf.d_name, "."); 1500 1.1.2.2 thorpej break; 1501 1.1.2.2 thorpej case 1: 1502 1.1.2.2 thorpej dirbuf.d_namlen = 2; 1503 1.1.2.2 thorpej strcpy(dirbuf.d_name, ".."); 1504 1.1.2.2 thorpej break; 1505 1.1.2.2 thorpej } 1506 1.1.2.2 thorpej dirbuf.d_reclen = DIRENT_SIZE(&dirbuf); 1507 1.1.2.2 thorpej if (uio->uio_resid < dirbuf.d_reclen) 1508 1.1.2.2 thorpej goto out; 1509 1.1.2.2 thorpej error = uiomove((caddr_t) &dirbuf, 1510 1.1.2.2 thorpej dirbuf.d_reclen, uio); 1511 1.1.2.2 thorpej if (error) 1512 1.1.2.2 thorpej goto out; 1513 1.1.2.2 thorpej offset += sizeof(struct direntry); 1514 1.1.2.2 thorpej uio_off = offset; 1515 1.1.2.2 thorpej if (cookies) { 1516 1.1.2.2 thorpej *cookies++ = offset; 1517 1.1.2.2 thorpej ncookies++; 1518 1.1.2.2 thorpej if (ncookies >= nc) 1519 1.1.2.2 thorpej goto out; 1520 1.1.2.2 thorpej } 1521 1.1.2.2 thorpej } 1522 1.1.2.2 thorpej } 1523 1.1.2.2 thorpej } 1524 1.1.2.2 thorpej 1525 1.1.2.2 thorpej while (uio->uio_resid > 0) { 1526 1.1.2.2 thorpej lbn = de_cluster(pmp, offset - bias); 1527 1.1.2.2 thorpej on = (offset - bias) & pmp->pm_crbomask; 1528 1.1.2.2 thorpej n = MIN(pmp->pm_bpcluster - on, uio->uio_resid); 1529 1.1.2.2 thorpej diff = dep->de_FileSize - (offset - bias); 1530 1.1.2.2 thorpej if (diff <= 0) 1531 1.1.2.2 thorpej break; 1532 1.1.2.2 thorpej n = MIN(n, diff); 1533 1.1.2.2 thorpej if ((error = pcbmap(dep, lbn, &bn, &cn, &blsize)) != 0) 1534 1.1.2.2 thorpej break; 1535 1.1.2.2 thorpej error = bread(pmp->pm_devvp, bn, blsize, NOCRED, &bp); 1536 1.1.2.2 thorpej if (error) { 1537 1.1.2.2 thorpej brelse(bp); 1538 1.1.2.2 thorpej return (error); 1539 1.1.2.2 thorpej } 1540 1.1.2.2 thorpej n = MIN(n, blsize - bp->b_resid); 1541 1.1.2.2 thorpej 1542 1.1.2.2 thorpej /* 1543 1.1.2.2 thorpej * Convert from dos directory entries to fs-independent 1544 1.1.2.2 thorpej * directory entries. 1545 1.1.2.2 thorpej */ 1546 1.1.2.2 thorpej for (dentp = (struct direntry *)(bp->b_data + on); 1547 1.1.2.2 thorpej (char *)dentp < bp->b_data + on + n; 1548 1.1.2.2 thorpej dentp++, offset += sizeof(struct direntry)) { 1549 1.1.2.2 thorpej #if 0 1550 1.1.2.2 thorpej 1551 1.1.2.2 thorpej printf("rd: dentp %08x prev %08x crnt %08x deName %02x attr %02x\n", 1552 1.1.2.2 thorpej dentp, prev, crnt, dentp->deName[0], dentp->deAttributes); 1553 1.1.2.2 thorpej #endif 1554 1.1.2.2 thorpej /* 1555 1.1.2.2 thorpej * If this is an unused entry, we can stop. 1556 1.1.2.2 thorpej */ 1557 1.1.2.2 thorpej if (dentp->deName[0] == SLOT_EMPTY) { 1558 1.1.2.2 thorpej brelse(bp); 1559 1.1.2.2 thorpej goto out; 1560 1.1.2.2 thorpej } 1561 1.1.2.2 thorpej /* 1562 1.1.2.2 thorpej * Skip deleted entries. 1563 1.1.2.2 thorpej */ 1564 1.1.2.2 thorpej if (dentp->deName[0] == SLOT_DELETED) { 1565 1.1.2.2 thorpej chksum = -1; 1566 1.1.2.2 thorpej continue; 1567 1.1.2.2 thorpej } 1568 1.1.2.2 thorpej 1569 1.1.2.2 thorpej /* 1570 1.1.2.2 thorpej * Handle Win95 long directory entries 1571 1.1.2.2 thorpej */ 1572 1.1.2.2 thorpej if (dentp->deAttributes == ATTR_WIN95) { 1573 1.1.2.2 thorpej if (pmp->pm_flags & MSDOSFSMNT_SHORTNAME) 1574 1.1.2.2 thorpej continue; 1575 1.1.2.2 thorpej chksum = win2unixfn((struct winentry *)dentp, &dirbuf, chksum); 1576 1.1.2.2 thorpej continue; 1577 1.1.2.2 thorpej } 1578 1.1.2.2 thorpej 1579 1.1.2.2 thorpej /* 1580 1.1.2.2 thorpej * Skip volume labels 1581 1.1.2.2 thorpej */ 1582 1.1.2.2 thorpej if (dentp->deAttributes & ATTR_VOLUME) { 1583 1.1.2.2 thorpej chksum = -1; 1584 1.1.2.2 thorpej continue; 1585 1.1.2.2 thorpej } 1586 1.1.2.2 thorpej /* 1587 1.1.2.2 thorpej * This computation of d_fileno must match 1588 1.1.2.2 thorpej * the computation of va_fileid in 1589 1.1.2.2 thorpej * msdosfs_getattr. 1590 1.1.2.2 thorpej */ 1591 1.1.2.2 thorpej if (dentp->deAttributes & ATTR_DIRECTORY) { 1592 1.1.2.2 thorpej fileno = getushort(dentp->deStartCluster); 1593 1.1.2.2 thorpej if (FAT32(pmp)) 1594 1.1.2.2 thorpej fileno |= getushort(dentp->deHighClust) << 16; 1595 1.1.2.2 thorpej /* if this is the root directory */ 1596 1.1.2.2 thorpej if (fileno == MSDOSFSROOT) 1597 1.1.2.2 thorpej if (FAT32(pmp)) 1598 1.1.2.2 thorpej fileno = cntobn(pmp, 1599 1.1.2.2 thorpej pmp->pm_rootdirblk) 1600 1.1.2.2 thorpej * dirsperblk; 1601 1.1.2.2 thorpej else 1602 1.1.2.2 thorpej fileno = 1; 1603 1.1.2.2 thorpej else 1604 1.1.2.2 thorpej fileno = cntobn(pmp, fileno) * dirsperblk; 1605 1.1.2.2 thorpej dirbuf.d_fileno = fileno; 1606 1.1.2.2 thorpej dirbuf.d_type = DT_DIR; 1607 1.1.2.2 thorpej } else { 1608 1.1.2.2 thorpej dirbuf.d_fileno = offset / sizeof(struct direntry); 1609 1.1.2.2 thorpej dirbuf.d_type = DT_REG; 1610 1.1.2.2 thorpej } 1611 1.1.2.2 thorpej if (chksum != winChksum(dentp->deName)) 1612 1.1.2.2 thorpej dirbuf.d_namlen = dos2unixfn(dentp->deName, 1613 1.1.2.2 thorpej (u_char *)dirbuf.d_name, 1614 1.1.2.2 thorpej pmp->pm_flags & MSDOSFSMNT_SHORTNAME); 1615 1.1.2.2 thorpej else 1616 1.1.2.2 thorpej dirbuf.d_name[dirbuf.d_namlen] = 0; 1617 1.1.2.2 thorpej chksum = -1; 1618 1.1.2.2 thorpej dirbuf.d_reclen = DIRENT_SIZE(&dirbuf); 1619 1.1.2.2 thorpej if (uio->uio_resid < dirbuf.d_reclen) { 1620 1.1.2.2 thorpej brelse(bp); 1621 1.1.2.2 thorpej goto out; 1622 1.1.2.2 thorpej } 1623 1.1.2.2 thorpej error = uiomove((caddr_t) &dirbuf, 1624 1.1.2.2 thorpej dirbuf.d_reclen, uio); 1625 1.1.2.2 thorpej if (error) { 1626 1.1.2.2 thorpej brelse(bp); 1627 1.1.2.2 thorpej goto out; 1628 1.1.2.2 thorpej } 1629 1.1.2.2 thorpej uio_off = offset + sizeof(struct direntry); 1630 1.1.2.2 thorpej if (cookies) { 1631 1.1.2.2 thorpej *cookies++ = offset + sizeof(struct direntry); 1632 1.1.2.2 thorpej ncookies++; 1633 1.1.2.2 thorpej if (ncookies >= nc) { 1634 1.1.2.2 thorpej brelse(bp); 1635 1.1.2.2 thorpej goto out; 1636 1.1.2.2 thorpej } 1637 1.1.2.2 thorpej } 1638 1.1.2.2 thorpej } 1639 1.1.2.2 thorpej brelse(bp); 1640 1.1.2.2 thorpej } 1641 1.1.2.2 thorpej 1642 1.1.2.2 thorpej out: 1643 1.1.2.2 thorpej uio->uio_offset = uio_off; 1644 1.1.2.2 thorpej uio->uio_resid += lost; 1645 1.1.2.2 thorpej if (dep->de_FileSize - (offset - bias) <= 0) 1646 1.1.2.2 thorpej *ap->a_eofflag = 1; 1647 1.1.2.2 thorpej else 1648 1.1.2.2 thorpej *ap->a_eofflag = 0; 1649 1.1.2.2 thorpej 1650 1.1.2.2 thorpej if (ap->a_ncookies) { 1651 1.1.2.2 thorpej if (error) { 1652 1.1.2.2 thorpej free(*ap->a_cookies, M_TEMP); 1653 1.1.2.2 thorpej *ap->a_ncookies = 0; 1654 1.1.2.2 thorpej *ap->a_cookies = NULL; 1655 1.1.2.2 thorpej } else 1656 1.1.2.2 thorpej *ap->a_ncookies = ncookies; 1657 1.1.2.2 thorpej } 1658 1.1.2.2 thorpej return (error); 1659 1.1.2.2 thorpej } 1660 1.1.2.2 thorpej 1661 1.1.2.2 thorpej /* 1662 1.1.2.2 thorpej * DOS filesystems don't know what symlinks are. 1663 1.1.2.2 thorpej */ 1664 1.1.2.2 thorpej int 1665 1.1.2.2 thorpej msdosfs_readlink(v) 1666 1.1.2.2 thorpej void *v; 1667 1.1.2.2 thorpej { 1668 1.1.2.2 thorpej #if 0 1669 1.1.2.2 thorpej struct vop_readlink_args /* { 1670 1.1.2.2 thorpej struct vnode *a_vp; 1671 1.1.2.2 thorpej struct uio *a_uio; 1672 1.1.2.2 thorpej struct ucred *a_cred; 1673 1.1.2.2 thorpej } */ *ap; 1674 1.1.2.2 thorpej #endif 1675 1.1.2.2 thorpej 1676 1.1.2.2 thorpej return (EINVAL); 1677 1.1.2.2 thorpej } 1678 1.1.2.2 thorpej 1679 1.1.2.2 thorpej /* 1680 1.1.2.2 thorpej * vp - address of vnode file the file 1681 1.1.2.2 thorpej * bn - which cluster we are interested in mapping to a filesystem block number. 1682 1.1.2.2 thorpej * vpp - returns the vnode for the block special file holding the filesystem 1683 1.1.2.2 thorpej * containing the file of interest 1684 1.1.2.2 thorpej * bnp - address of where to return the filesystem relative block number 1685 1.1.2.2 thorpej */ 1686 1.1.2.2 thorpej int 1687 1.1.2.2 thorpej msdosfs_bmap(v) 1688 1.1.2.2 thorpej void *v; 1689 1.1.2.2 thorpej { 1690 1.1.2.2 thorpej struct vop_bmap_args /* { 1691 1.1.2.2 thorpej struct vnode *a_vp; 1692 1.1.2.2 thorpej daddr_t a_bn; 1693 1.1.2.2 thorpej struct vnode **a_vpp; 1694 1.1.2.2 thorpej daddr_t *a_bnp; 1695 1.1.2.2 thorpej int *a_runp; 1696 1.1.2.2 thorpej } */ *ap = v; 1697 1.1.2.2 thorpej struct denode *dep = VTODE(ap->a_vp); 1698 1.1.2.2 thorpej 1699 1.1.2.2 thorpej if (ap->a_vpp != NULL) 1700 1.1.2.2 thorpej *ap->a_vpp = dep->de_devvp; 1701 1.1.2.2 thorpej if (ap->a_bnp == NULL) 1702 1.1.2.2 thorpej return (0); 1703 1.1.2.2 thorpej if (ap->a_runp) { 1704 1.1.2.2 thorpej /* 1705 1.1.2.2 thorpej * Sequential clusters should be counted here. 1706 1.1.2.2 thorpej */ 1707 1.1.2.2 thorpej *ap->a_runp = 0; 1708 1.1.2.2 thorpej } 1709 1.1.2.2 thorpej return (pcbmap(dep, ap->a_bn, ap->a_bnp, 0, 0)); 1710 1.1.2.2 thorpej } 1711 1.1.2.2 thorpej 1712 1.1.2.2 thorpej int 1713 1.1.2.2 thorpej msdosfs_reallocblks(v) 1714 1.1.2.2 thorpej void *v; 1715 1.1.2.2 thorpej { 1716 1.1.2.2 thorpej #if 0 1717 1.1.2.2 thorpej struct vop_reallocblks_args /* { 1718 1.1.2.2 thorpej struct vnode *a_vp; 1719 1.1.2.2 thorpej struct cluster_save *a_buflist; 1720 1.1.2.2 thorpej } */ *ap = v; 1721 1.1.2.2 thorpej #endif 1722 1.1.2.2 thorpej 1723 1.1.2.2 thorpej /* Currently no support for clustering */ /* XXX */ 1724 1.1.2.2 thorpej return (ENOSPC); 1725 1.1.2.2 thorpej } 1726 1.1.2.2 thorpej 1727 1.1.2.2 thorpej int 1728 1.1.2.2 thorpej msdosfs_strategy(v) 1729 1.1.2.2 thorpej void *v; 1730 1.1.2.2 thorpej { 1731 1.1.2.2 thorpej struct vop_strategy_args /* { 1732 1.1.2.2 thorpej struct buf *a_bp; 1733 1.1.2.2 thorpej } */ *ap = v; 1734 1.1.2.2 thorpej struct buf *bp = ap->a_bp; 1735 1.1.2.2 thorpej struct denode *dep = VTODE(bp->b_vp); 1736 1.1.2.2 thorpej struct vnode *vp; 1737 1.1.2.2 thorpej int error = 0; 1738 1.1.2.2 thorpej 1739 1.1.2.2 thorpej if (bp->b_vp->v_type == VBLK || bp->b_vp->v_type == VCHR) 1740 1.1.2.2 thorpej panic("msdosfs_strategy: spec"); 1741 1.1.2.2 thorpej /* 1742 1.1.2.2 thorpej * If we don't already know the filesystem relative block number 1743 1.1.2.2 thorpej * then get it using pcbmap(). If pcbmap() returns the block 1744 1.1.2.2 thorpej * number as -1 then we've got a hole in the file. DOS filesystems 1745 1.1.2.2 thorpej * don't allow files with holes, so we shouldn't ever see this. 1746 1.1.2.2 thorpej */ 1747 1.1.2.2 thorpej if (bp->b_blkno == bp->b_lblkno) { 1748 1.1.2.2 thorpej error = pcbmap(dep, de_bn2cn(dep->de_pmp, bp->b_lblkno), 1749 1.1.2.2 thorpej &bp->b_blkno, 0, 0); 1750 1.1.2.2 thorpej if (error) 1751 1.1.2.2 thorpej bp->b_blkno = -1; 1752 1.1.2.2 thorpej if (bp->b_blkno == -1) 1753 1.1.2.2 thorpej clrbuf(bp); 1754 1.1.2.2 thorpej } 1755 1.1.2.2 thorpej if (bp->b_blkno == -1) { 1756 1.1.2.2 thorpej biodone(bp); 1757 1.1.2.2 thorpej return (error); 1758 1.1.2.2 thorpej } 1759 1.1.2.2 thorpej 1760 1.1.2.2 thorpej /* 1761 1.1.2.2 thorpej * Read/write the block from/to the disk that contains the desired 1762 1.1.2.2 thorpej * file block. 1763 1.1.2.2 thorpej */ 1764 1.1.2.2 thorpej 1765 1.1.2.2 thorpej vp = dep->de_devvp; 1766 1.1.2.2 thorpej bp->b_dev = vp->v_rdev; 1767 1.1.2.2 thorpej VOCALL(vp->v_op, VOFFSET(vop_strategy), ap); 1768 1.1.2.2 thorpej return (0); 1769 1.1.2.2 thorpej } 1770 1.1.2.2 thorpej 1771 1.1.2.2 thorpej int 1772 1.1.2.2 thorpej msdosfs_print(v) 1773 1.1.2.2 thorpej void *v; 1774 1.1.2.2 thorpej { 1775 1.1.2.2 thorpej struct vop_print_args /* { 1776 1.1.2.2 thorpej struct vnode *vp; 1777 1.1.2.2 thorpej } */ *ap = v; 1778 1.1.2.2 thorpej struct denode *dep = VTODE(ap->a_vp); 1779 1.1.2.2 thorpej 1780 1.1.2.2 thorpej printf( 1781 1.1.2.2 thorpej "tag VT_MSDOSFS, startcluster %ld, dircluster %ld, diroffset %ld ", 1782 1.1.2.2 thorpej dep->de_StartCluster, dep->de_dirclust, dep->de_diroffset); 1783 1.1.2.2 thorpej printf(" dev %d, %d ", major(dep->de_dev), minor(dep->de_dev)); 1784 1.1.2.2 thorpej lockmgr_printinfo(&ap->a_vp->v_lock); 1785 1.1.2.2 thorpej printf("\n"); 1786 1.1.2.2 thorpej return (0); 1787 1.1.2.2 thorpej } 1788 1.1.2.2 thorpej 1789 1.1.2.2 thorpej int 1790 1.1.2.2 thorpej msdosfs_advlock(v) 1791 1.1.2.2 thorpej void *v; 1792 1.1.2.2 thorpej { 1793 1.1.2.2 thorpej struct vop_advlock_args /* { 1794 1.1.2.2 thorpej struct vnode *a_vp; 1795 1.1.2.2 thorpej caddr_t a_id; 1796 1.1.2.2 thorpej int a_op; 1797 1.1.2.2 thorpej struct flock *a_fl; 1798 1.1.2.2 thorpej int a_flags; 1799 1.1.2.2 thorpej } */ *ap = v; 1800 1.1.2.2 thorpej struct denode *dep = VTODE(ap->a_vp); 1801 1.1.2.2 thorpej 1802 1.1.2.2 thorpej return lf_advlock(ap, &dep->de_lockf, dep->de_FileSize); 1803 1.1.2.2 thorpej } 1804 1.1.2.2 thorpej 1805 1.1.2.2 thorpej int 1806 1.1.2.2 thorpej msdosfs_pathconf(v) 1807 1.1.2.2 thorpej void *v; 1808 1.1.2.2 thorpej { 1809 1.1.2.2 thorpej struct vop_pathconf_args /* { 1810 1.1.2.2 thorpej struct vnode *a_vp; 1811 1.1.2.2 thorpej int a_name; 1812 1.1.2.2 thorpej register_t *a_retval; 1813 1.1.2.2 thorpej } */ *ap = v; 1814 1.1.2.2 thorpej struct msdosfsmount *pmp = VTODE(ap->a_vp)->de_pmp; 1815 1.1.2.2 thorpej 1816 1.1.2.2 thorpej switch (ap->a_name) { 1817 1.1.2.2 thorpej case _PC_LINK_MAX: 1818 1.1.2.2 thorpej *ap->a_retval = 1; 1819 1.1.2.2 thorpej return (0); 1820 1.1.2.2 thorpej case _PC_NAME_MAX: 1821 1.1.2.2 thorpej *ap->a_retval = pmp->pm_flags & MSDOSFSMNT_LONGNAME ? WIN_MAXLEN : 12; 1822 1.1.2.2 thorpej return (0); 1823 1.1.2.2 thorpej case _PC_PATH_MAX: 1824 1.1.2.2 thorpej *ap->a_retval = PATH_MAX; 1825 1.1.2.2 thorpej return (0); 1826 1.1.2.2 thorpej case _PC_CHOWN_RESTRICTED: 1827 1.1.2.2 thorpej *ap->a_retval = 1; 1828 1.1.2.2 thorpej return (0); 1829 1.1.2.2 thorpej case _PC_NO_TRUNC: 1830 1.1.2.2 thorpej *ap->a_retval = 0; 1831 1.1.2.2 thorpej return (0); 1832 1.1.2.2 thorpej case _PC_SYNC_IO: 1833 1.1.2.2 thorpej *ap->a_retval = 1; 1834 1.1.2.2 thorpej return (0); 1835 1.1.2.2 thorpej case _PC_FILESIZEBITS: 1836 1.1.2.2 thorpej *ap->a_retval = 32; 1837 1.1.2.2 thorpej return (0); 1838 1.1.2.2 thorpej default: 1839 1.1.2.2 thorpej return (EINVAL); 1840 1.1.2.2 thorpej } 1841 1.1.2.2 thorpej /* NOTREACHED */ 1842 1.1.2.2 thorpej } 1843 1.1.2.2 thorpej 1844 1.1.2.2 thorpej /* Global vfs data structures for msdosfs */ 1845 1.1.2.2 thorpej int (**msdosfs_vnodeop_p) __P((void *)); 1846 1.1.2.2 thorpej const struct vnodeopv_entry_desc msdosfs_vnodeop_entries[] = { 1847 1.1.2.2 thorpej { &vop_default_desc, vn_default_error }, 1848 1.1.2.2 thorpej { &vop_lookup_desc, msdosfs_lookup }, /* lookup */ 1849 1.1.2.2 thorpej { &vop_create_desc, msdosfs_create }, /* create */ 1850 1.1.2.2 thorpej { &vop_mknod_desc, msdosfs_mknod }, /* mknod */ 1851 1.1.2.2 thorpej { &vop_open_desc, msdosfs_open }, /* open */ 1852 1.1.2.2 thorpej { &vop_close_desc, msdosfs_close }, /* close */ 1853 1.1.2.2 thorpej { &vop_access_desc, msdosfs_access }, /* access */ 1854 1.1.2.2 thorpej { &vop_getattr_desc, msdosfs_getattr }, /* getattr */ 1855 1.1.2.2 thorpej { &vop_setattr_desc, msdosfs_setattr }, /* setattr */ 1856 1.1.2.2 thorpej { &vop_read_desc, msdosfs_read }, /* read */ 1857 1.1.2.2 thorpej { &vop_write_desc, msdosfs_write }, /* write */ 1858 1.1.2.2 thorpej { &vop_lease_desc, msdosfs_lease_check }, /* lease */ 1859 1.1.2.2 thorpej { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 1860 1.1.2.2 thorpej { &vop_ioctl_desc, msdosfs_ioctl }, /* ioctl */ 1861 1.1.2.2 thorpej { &vop_poll_desc, msdosfs_poll }, /* poll */ 1862 1.1.2.2 thorpej { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 1863 1.1.2.2 thorpej { &vop_revoke_desc, msdosfs_revoke }, /* revoke */ 1864 1.1.2.2 thorpej { &vop_mmap_desc, msdosfs_mmap }, /* mmap */ 1865 1.1.2.2 thorpej { &vop_fsync_desc, msdosfs_fsync }, /* fsync */ 1866 1.1.2.2 thorpej { &vop_seek_desc, msdosfs_seek }, /* seek */ 1867 1.1.2.2 thorpej { &vop_remove_desc, msdosfs_remove }, /* remove */ 1868 1.1.2.2 thorpej { &vop_link_desc, msdosfs_link }, /* link */ 1869 1.1.2.2 thorpej { &vop_rename_desc, msdosfs_rename }, /* rename */ 1870 1.1.2.2 thorpej { &vop_mkdir_desc, msdosfs_mkdir }, /* mkdir */ 1871 1.1.2.2 thorpej { &vop_rmdir_desc, msdosfs_rmdir }, /* rmdir */ 1872 1.1.2.2 thorpej { &vop_symlink_desc, msdosfs_symlink }, /* symlink */ 1873 1.1.2.2 thorpej { &vop_readdir_desc, msdosfs_readdir }, /* readdir */ 1874 1.1.2.2 thorpej { &vop_readlink_desc, msdosfs_readlink }, /* readlink */ 1875 1.1.2.2 thorpej { &vop_abortop_desc, msdosfs_abortop }, /* abortop */ 1876 1.1.2.2 thorpej { &vop_inactive_desc, msdosfs_inactive }, /* inactive */ 1877 1.1.2.2 thorpej { &vop_reclaim_desc, msdosfs_reclaim }, /* reclaim */ 1878 1.1.2.2 thorpej { &vop_lock_desc, genfs_lock }, /* lock */ 1879 1.1.2.2 thorpej { &vop_unlock_desc, genfs_unlock }, /* unlock */ 1880 1.1.2.2 thorpej { &vop_bmap_desc, msdosfs_bmap }, /* bmap */ 1881 1.1.2.2 thorpej { &vop_strategy_desc, msdosfs_strategy }, /* strategy */ 1882 1.1.2.2 thorpej { &vop_print_desc, msdosfs_print }, /* print */ 1883 1.1.2.2 thorpej { &vop_islocked_desc, genfs_islocked }, /* islocked */ 1884 1.1.2.2 thorpej { &vop_pathconf_desc, msdosfs_pathconf }, /* pathconf */ 1885 1.1.2.2 thorpej { &vop_advlock_desc, msdosfs_advlock }, /* advlock */ 1886 1.1.2.2 thorpej { &vop_reallocblks_desc, msdosfs_reallocblks }, /* reallocblks */ 1887 1.1.2.2 thorpej { &vop_update_desc, msdosfs_update }, /* update */ 1888 1.1.2.2 thorpej { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 1889 1.1.2.2 thorpej { &vop_getpages_desc, genfs_getpages }, /* getpages */ 1890 1.1.2.2 thorpej { &vop_putpages_desc, genfs_putpages }, /* putpages */ 1891 1.1.2.2 thorpej { NULL, NULL } 1892 1.1.2.2 thorpej }; 1893 1.1.2.2 thorpej const struct vnodeopv_desc msdosfs_vnodeop_opv_desc = 1894 1.1.2.2 thorpej { &msdosfs_vnodeop_p, msdosfs_vnodeop_entries }; 1895
Indexes created Sun Oct 26 21:10:03 GMT 2025