msdosfs_vnops.c revision 1.40.10.2
1 1.40.10.2 rumble /* $NetBSD: msdosfs_vnops.c,v 1.40.10.2 2007/07/29 21:17:42 rumble Exp $ */ 2 1.40.10.2 rumble 3 1.40.10.2 rumble /*- 4 1.40.10.2 rumble * Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank. 5 1.40.10.2 rumble * Copyright (C) 1994, 1995, 1997 TooLs GmbH. 6 1.40.10.2 rumble * All rights reserved. 7 1.40.10.2 rumble * Original code by Paul Popelka (paulp (at) uts.amdahl.com) (see below). 8 1.40.10.2 rumble * 9 1.40.10.2 rumble * Redistribution and use in source and binary forms, with or without 10 1.40.10.2 rumble * modification, are permitted provided that the following conditions 11 1.40.10.2 rumble * are met: 12 1.40.10.2 rumble * 1. Redistributions of source code must retain the above copyright 13 1.40.10.2 rumble * notice, this list of conditions and the following disclaimer. 14 1.40.10.2 rumble * 2. Redistributions in binary form must reproduce the above copyright 15 1.40.10.2 rumble * notice, this list of conditions and the following disclaimer in the 16 1.40.10.2 rumble * documentation and/or other materials provided with the distribution. 17 1.40.10.2 rumble * 3. All advertising materials mentioning features or use of this software 18 1.40.10.2 rumble * must display the following acknowledgement: 19 1.40.10.2 rumble * This product includes software developed by TooLs GmbH. 20 1.40.10.2 rumble * 4. The name of TooLs GmbH may not be used to endorse or promote products 21 1.40.10.2 rumble * derived from this software without specific prior written permission. 22 1.40.10.2 rumble * 23 1.40.10.2 rumble * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 24 1.40.10.2 rumble * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 1.40.10.2 rumble * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 1.40.10.2 rumble * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 1.40.10.2 rumble * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 1.40.10.2 rumble * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 29 1.40.10.2 rumble * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 30 1.40.10.2 rumble * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 31 1.40.10.2 rumble * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 32 1.40.10.2 rumble * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 1.40.10.2 rumble */ 34 1.40.10.2 rumble /* 35 1.40.10.2 rumble * Written by Paul Popelka (paulp (at) uts.amdahl.com) 36 1.40.10.2 rumble * 37 1.40.10.2 rumble * You can do anything you want with this software, just don't say you wrote 38 1.40.10.2 rumble * it, and don't remove this notice. 39 1.40.10.2 rumble * 40 1.40.10.2 rumble * This software is provided "as is". 41 1.40.10.2 rumble * 42 1.40.10.2 rumble * The author supplies this software to be publicly redistributed on the 43 1.40.10.2 rumble * understanding that the author is not responsible for the correct 44 1.40.10.2 rumble * functioning of this software in any circumstances and is not liable for 45 1.40.10.2 rumble * any damages caused by this software. 46 1.40.10.2 rumble * 47 1.40.10.2 rumble * October 1992 48 1.40.10.2 rumble */ 49 1.40.10.2 rumble 50 1.40.10.2 rumble #include <sys/cdefs.h> 51 1.40.10.2 rumble __KERNEL_RCSID(0, "$NetBSD: msdosfs_vnops.c,v 1.40.10.2 2007/07/29 21:17:42 rumble Exp $"); 52 1.40.10.2 rumble 53 1.40.10.2 rumble #include <sys/param.h> 54 1.40.10.2 rumble #include <sys/systm.h> 55 1.40.10.2 rumble #include <sys/namei.h> 56 1.40.10.2 rumble #include <sys/resourcevar.h> /* defines plimit structure in proc struct */ 57 1.40.10.2 rumble #include <sys/kernel.h> 58 1.40.10.2 rumble #include <sys/file.h> /* define FWRITE ... */ 59 1.40.10.2 rumble #include <sys/stat.h> 60 1.40.10.2 rumble #include <sys/buf.h> 61 1.40.10.2 rumble #include <sys/proc.h> 62 1.40.10.2 rumble #include <sys/mount.h> 63 1.40.10.2 rumble #include <sys/vnode.h> 64 1.40.10.2 rumble #include <sys/signalvar.h> 65 1.40.10.2 rumble #include <sys/malloc.h> 66 1.40.10.2 rumble #include <sys/dirent.h> 67 1.40.10.2 rumble #include <sys/lockf.h> 68 1.40.10.2 rumble #include <sys/kauth.h> 69 1.40.10.2 rumble 70 1.40.10.2 rumble #include <miscfs/genfs/genfs.h> 71 1.40.10.2 rumble #include <miscfs/specfs/specdev.h> /* XXX */ /* defines v_rdev */ 72 1.40.10.2 rumble 73 1.40.10.2 rumble #include <uvm/uvm_extern.h> 74 1.40.10.2 rumble 75 1.40.10.2 rumble #include <fs/msdosfs/bpb.h> 76 1.40.10.2 rumble #include <fs/msdosfs/direntry.h> 77 1.40.10.2 rumble #include <fs/msdosfs/denode.h> 78 1.40.10.2 rumble #include <fs/msdosfs/msdosfsmount.h> 79 1.40.10.2 rumble #include <fs/msdosfs/fat.h> 80 1.40.10.2 rumble 81 1.40.10.2 rumble /* 82 1.40.10.2 rumble * Some general notes: 83 1.40.10.2 rumble * 84 1.40.10.2 rumble * In the ufs filesystem the inodes, superblocks, and indirect blocks are 85 1.40.10.2 rumble * read/written using the vnode for the filesystem. Blocks that represent 86 1.40.10.2 rumble * the contents of a file are read/written using the vnode for the file 87 1.40.10.2 rumble * (including directories when they are read/written as files). This 88 1.40.10.2 rumble * presents problems for the dos filesystem because data that should be in 89 1.40.10.2 rumble * an inode (if dos had them) resides in the directory itself. Since we 90 1.40.10.2 rumble * must update directory entries without the benefit of having the vnode 91 1.40.10.2 rumble * for the directory we must use the vnode for the filesystem. This means 92 1.40.10.2 rumble * that when a directory is actually read/written (via read, write, or 93 1.40.10.2 rumble * readdir, or seek) we must use the vnode for the filesystem instead of 94 1.40.10.2 rumble * the vnode for the directory as would happen in ufs. This is to insure we 95 1.40.10.2 rumble * retrieve the correct block from the buffer cache since the hash value is 96 1.40.10.2 rumble * based upon the vnode address and the desired block number. 97 1.40.10.2 rumble */ 98 1.40.10.2 rumble 99 1.40.10.2 rumble /* 100 1.40.10.2 rumble * Create a regular file. On entry the directory to contain the file being 101 1.40.10.2 rumble * created is locked. We must release before we return. We must also free 102 1.40.10.2 rumble * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or 103 1.40.10.2 rumble * only if the SAVESTART bit in cn_flags is clear on success. 104 1.40.10.2 rumble */ 105 1.40.10.2 rumble int 106 1.40.10.2 rumble msdosfs_create(v) 107 1.40.10.2 rumble void *v; 108 1.40.10.2 rumble { 109 1.40.10.2 rumble struct vop_create_args /* { 110 1.40.10.2 rumble struct vnode *a_dvp; 111 1.40.10.2 rumble struct vnode **a_vpp; 112 1.40.10.2 rumble struct componentname *a_cnp; 113 1.40.10.2 rumble struct vattr *a_vap; 114 1.40.10.2 rumble } */ *ap = v; 115 1.40.10.2 rumble struct componentname *cnp = ap->a_cnp; 116 1.40.10.2 rumble struct denode ndirent; 117 1.40.10.2 rumble struct denode *dep; 118 1.40.10.2 rumble struct denode *pdep = VTODE(ap->a_dvp); 119 1.40.10.2 rumble int error; 120 1.40.10.2 rumble 121 1.40.10.2 rumble #ifdef MSDOSFS_DEBUG 122 1.40.10.2 rumble printf("msdosfs_create(cnp %p, vap %p\n", cnp, ap->a_vap); 123 1.40.10.2 rumble #endif 124 1.40.10.2 rumble 125 1.40.10.2 rumble /* 126 1.40.10.2 rumble * If this is the root directory and there is no space left we 127 1.40.10.2 rumble * can't do anything. This is because the root directory can not 128 1.40.10.2 rumble * change size. 129 1.40.10.2 rumble */ 130 1.40.10.2 rumble if (pdep->de_StartCluster == MSDOSFSROOT 131 1.40.10.2 rumble && pdep->de_fndoffset >= pdep->de_FileSize) { 132 1.40.10.2 rumble error = ENOSPC; 133 1.40.10.2 rumble goto bad; 134 1.40.10.2 rumble } 135 1.40.10.2 rumble 136 1.40.10.2 rumble /* 137 1.40.10.2 rumble * Create a directory entry for the file, then call createde() to 138 1.40.10.2 rumble * have it installed. NOTE: DOS files are always executable. We 139 1.40.10.2 rumble * use the absence of the owner write bit to make the file 140 1.40.10.2 rumble * readonly. 141 1.40.10.2 rumble */ 142 1.40.10.2 rumble #ifdef DIAGNOSTIC 143 1.40.10.2 rumble if ((cnp->cn_flags & HASBUF) == 0) 144 1.40.10.2 rumble panic("msdosfs_create: no name"); 145 1.40.10.2 rumble #endif 146 1.40.10.2 rumble memset(&ndirent, 0, sizeof(ndirent)); 147 1.40.10.2 rumble if ((error = uniqdosname(pdep, cnp, ndirent.de_Name)) != 0) 148 1.40.10.2 rumble goto bad; 149 1.40.10.2 rumble 150 1.40.10.2 rumble ndirent.de_Attributes = (ap->a_vap->va_mode & S_IWUSR) ? 151 1.40.10.2 rumble ATTR_ARCHIVE : ATTR_ARCHIVE | ATTR_READONLY; 152 1.40.10.2 rumble ndirent.de_StartCluster = 0; 153 1.40.10.2 rumble ndirent.de_FileSize = 0; 154 1.40.10.2 rumble ndirent.de_dev = pdep->de_dev; 155 1.40.10.2 rumble ndirent.de_devvp = pdep->de_devvp; 156 1.40.10.2 rumble ndirent.de_pmp = pdep->de_pmp; 157 1.40.10.2 rumble ndirent.de_flag = DE_ACCESS | DE_CREATE | DE_UPDATE; 158 1.40.10.2 rumble DETIMES(&ndirent, NULL, NULL, NULL, pdep->de_pmp->pm_gmtoff); 159 1.40.10.2 rumble if ((error = createde(&ndirent, pdep, &dep, cnp)) != 0) 160 1.40.10.2 rumble goto bad; 161 1.40.10.2 rumble if ((cnp->cn_flags & SAVESTART) == 0) 162 1.40.10.2 rumble PNBUF_PUT(cnp->cn_pnbuf); 163 1.40.10.2 rumble VN_KNOTE(ap->a_dvp, NOTE_WRITE); 164 1.40.10.2 rumble vput(ap->a_dvp); 165 1.40.10.2 rumble *ap->a_vpp = DETOV(dep); 166 1.40.10.2 rumble return (0); 167 1.40.10.2 rumble 168 1.40.10.2 rumble bad: 169 1.40.10.2 rumble PNBUF_PUT(cnp->cn_pnbuf); 170 1.40.10.2 rumble vput(ap->a_dvp); 171 1.40.10.2 rumble return (error); 172 1.40.10.2 rumble } 173 1.40.10.2 rumble 174 1.40.10.2 rumble int 175 1.40.10.2 rumble msdosfs_mknod(v) 176 1.40.10.2 rumble void *v; 177 1.40.10.2 rumble { 178 1.40.10.2 rumble struct vop_mknod_args /* { 179 1.40.10.2 rumble struct vnode *a_dvp; 180 1.40.10.2 rumble struct vnode **a_vpp; 181 1.40.10.2 rumble struct componentname *a_cnp; 182 1.40.10.2 rumble struct vattr *a_vap; 183 1.40.10.2 rumble } */ *ap = v; 184 1.40.10.2 rumble 185 1.40.10.2 rumble PNBUF_PUT(ap->a_cnp->cn_pnbuf); 186 1.40.10.2 rumble vput(ap->a_dvp); 187 1.40.10.2 rumble return (EINVAL); 188 1.40.10.2 rumble } 189 1.40.10.2 rumble 190 1.40.10.2 rumble int 191 1.40.10.2 rumble msdosfs_open(void *v) 192 1.40.10.2 rumble { 193 1.40.10.2 rumble #if 0 194 1.40.10.2 rumble struct vop_open_args /* { 195 1.40.10.2 rumble struct vnode *a_vp; 196 1.40.10.2 rumble int a_mode; 197 1.40.10.2 rumble kauth_cred_t a_cred; 198 1.40.10.2 rumble struct lwp *a_l; 199 1.40.10.2 rumble } */ *ap; 200 1.40.10.2 rumble #endif 201 1.40.10.2 rumble 202 1.40.10.2 rumble return (0); 203 1.40.10.2 rumble } 204 1.40.10.2 rumble 205 1.40.10.2 rumble int 206 1.40.10.2 rumble msdosfs_close(v) 207 1.40.10.2 rumble void *v; 208 1.40.10.2 rumble { 209 1.40.10.2 rumble struct vop_close_args /* { 210 1.40.10.2 rumble struct vnode *a_vp; 211 1.40.10.2 rumble int a_fflag; 212 1.40.10.2 rumble kauth_cred_t a_cred; 213 1.40.10.2 rumble struct lwp *a_l; 214 1.40.10.2 rumble } */ *ap = v; 215 1.40.10.2 rumble struct vnode *vp = ap->a_vp; 216 1.40.10.2 rumble struct denode *dep = VTODE(vp); 217 1.40.10.2 rumble 218 1.40.10.2 rumble simple_lock(&vp->v_interlock); 219 1.40.10.2 rumble if (vp->v_usecount > 1) 220 1.40.10.2 rumble DETIMES(dep, NULL, NULL, NULL, dep->de_pmp->pm_gmtoff); 221 1.40.10.2 rumble simple_unlock(&vp->v_interlock); 222 1.40.10.2 rumble return (0); 223 1.40.10.2 rumble } 224 1.40.10.2 rumble 225 1.40.10.2 rumble int 226 1.40.10.2 rumble msdosfs_access(v) 227 1.40.10.2 rumble void *v; 228 1.40.10.2 rumble { 229 1.40.10.2 rumble struct vop_access_args /* { 230 1.40.10.2 rumble struct vnode *a_vp; 231 1.40.10.2 rumble int a_mode; 232 1.40.10.2 rumble kauth_cred_t a_cred; 233 1.40.10.2 rumble struct lwp *a_l; 234 1.40.10.2 rumble } */ *ap = v; 235 1.40.10.2 rumble struct vnode *vp = ap->a_vp; 236 1.40.10.2 rumble struct denode *dep = VTODE(vp); 237 1.40.10.2 rumble struct msdosfsmount *pmp = dep->de_pmp; 238 1.40.10.2 rumble mode_t mode = ap->a_mode; 239 1.40.10.2 rumble 240 1.40.10.2 rumble /* 241 1.40.10.2 rumble * Disallow write attempts on read-only file systems; 242 1.40.10.2 rumble * unless the file is a socket, fifo, or a block or 243 1.40.10.2 rumble * character device resident on the file system. 244 1.40.10.2 rumble */ 245 1.40.10.2 rumble if (mode & VWRITE) { 246 1.40.10.2 rumble switch (vp->v_type) { 247 1.40.10.2 rumble case VDIR: 248 1.40.10.2 rumble case VLNK: 249 1.40.10.2 rumble case VREG: 250 1.40.10.2 rumble if (vp->v_mount->mnt_flag & MNT_RDONLY) 251 1.40.10.2 rumble return (EROFS); 252 1.40.10.2 rumble default: 253 1.40.10.2 rumble break; 254 1.40.10.2 rumble } 255 1.40.10.2 rumble } 256 1.40.10.2 rumble 257 1.40.10.2 rumble if ((dep->de_Attributes & ATTR_READONLY) == 0) 258 1.40.10.2 rumble mode = S_IRWXU|S_IRWXG|S_IRWXO; 259 1.40.10.2 rumble else 260 1.40.10.2 rumble mode = S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH; 261 1.40.10.2 rumble return (vaccess(ap->a_vp->v_type, 262 1.40.10.2 rumble mode & (vp->v_type == VDIR ? pmp->pm_dirmask : pmp->pm_mask), 263 1.40.10.2 rumble pmp->pm_uid, pmp->pm_gid, ap->a_mode, ap->a_cred)); 264 1.40.10.2 rumble } 265 1.40.10.2 rumble 266 1.40.10.2 rumble int 267 1.40.10.2 rumble msdosfs_getattr(v) 268 1.40.10.2 rumble void *v; 269 1.40.10.2 rumble { 270 1.40.10.2 rumble struct vop_getattr_args /* { 271 1.40.10.2 rumble struct vnode *a_vp; 272 1.40.10.2 rumble struct vattr *a_vap; 273 1.40.10.2 rumble kauth_cred_t a_cred; 274 1.40.10.2 rumble struct lwp *a_l; 275 1.40.10.2 rumble } */ *ap = v; 276 1.40.10.2 rumble struct denode *dep = VTODE(ap->a_vp); 277 1.40.10.2 rumble struct msdosfsmount *pmp = dep->de_pmp; 278 1.40.10.2 rumble struct vattr *vap = ap->a_vap; 279 1.40.10.2 rumble mode_t mode; 280 1.40.10.2 rumble u_long dirsperblk = pmp->pm_BytesPerSec / sizeof(struct direntry); 281 1.40.10.2 rumble ino_t fileid; 282 1.40.10.2 rumble 283 1.40.10.2 rumble DETIMES(dep, NULL, NULL, NULL, pmp->pm_gmtoff); 284 1.40.10.2 rumble vap->va_fsid = dep->de_dev; 285 1.40.10.2 rumble /* 286 1.40.10.2 rumble * The following computation of the fileid must be the same as that 287 1.40.10.2 rumble * used in msdosfs_readdir() to compute d_fileno. If not, pwd 288 1.40.10.2 rumble * doesn't work. 289 1.40.10.2 rumble */ 290 1.40.10.2 rumble if (dep->de_Attributes & ATTR_DIRECTORY) { 291 1.40.10.2 rumble fileid = cntobn(pmp, (ino_t)dep->de_StartCluster) * dirsperblk; 292 1.40.10.2 rumble if (dep->de_StartCluster == MSDOSFSROOT) 293 1.40.10.2 rumble fileid = 1; 294 1.40.10.2 rumble } else { 295 1.40.10.2 rumble fileid = cntobn(pmp, (ino_t)dep->de_dirclust) * dirsperblk; 296 1.40.10.2 rumble if (dep->de_dirclust == MSDOSFSROOT) 297 1.40.10.2 rumble fileid = roottobn(pmp, 0) * dirsperblk; 298 1.40.10.2 rumble fileid += dep->de_diroffset / sizeof(struct direntry); 299 1.40.10.2 rumble } 300 1.40.10.2 rumble vap->va_fileid = fileid; 301 1.40.10.2 rumble if ((dep->de_Attributes & ATTR_READONLY) == 0) 302 1.40.10.2 rumble mode = S_IRWXU|S_IRWXG|S_IRWXO; 303 1.40.10.2 rumble else 304 1.40.10.2 rumble mode = S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH; 305 1.40.10.2 rumble vap->va_mode = 306 1.40.10.2 rumble mode & (ap->a_vp->v_type == VDIR ? pmp->pm_dirmask : pmp->pm_mask); 307 1.40.10.2 rumble vap->va_uid = pmp->pm_uid; 308 1.40.10.2 rumble vap->va_gid = pmp->pm_gid; 309 1.40.10.2 rumble vap->va_nlink = 1; 310 1.40.10.2 rumble vap->va_rdev = 0; 311 1.40.10.2 rumble vap->va_size = ap->a_vp->v_size; 312 1.40.10.2 rumble dos2unixtime(dep->de_MDate, dep->de_MTime, 0, pmp->pm_gmtoff, 313 1.40.10.2 rumble &vap->va_mtime); 314 1.40.10.2 rumble if (dep->de_pmp->pm_flags & MSDOSFSMNT_LONGNAME) { 315 1.40.10.2 rumble dos2unixtime(dep->de_ADate, 0, 0, pmp->pm_gmtoff, 316 1.40.10.2 rumble &vap->va_atime); 317 1.40.10.2 rumble dos2unixtime(dep->de_CDate, dep->de_CTime, dep->de_CHun, 318 1.40.10.2 rumble pmp->pm_gmtoff, &vap->va_ctime); 319 1.40.10.2 rumble } else { 320 1.40.10.2 rumble vap->va_atime = vap->va_mtime; 321 1.40.10.2 rumble vap->va_ctime = vap->va_mtime; 322 1.40.10.2 rumble } 323 1.40.10.2 rumble vap->va_flags = 0; 324 1.40.10.2 rumble if ((dep->de_Attributes & ATTR_ARCHIVE) == 0) 325 1.40.10.2 rumble vap->va_mode |= S_ARCH1; 326 1.40.10.2 rumble vap->va_gen = 0; 327 1.40.10.2 rumble vap->va_blocksize = pmp->pm_bpcluster; 328 1.40.10.2 rumble vap->va_bytes = 329 1.40.10.2 rumble (dep->de_FileSize + pmp->pm_crbomask) & ~pmp->pm_crbomask; 330 1.40.10.2 rumble vap->va_type = ap->a_vp->v_type; 331 1.40.10.2 rumble return (0); 332 1.40.10.2 rumble } 333 1.40.10.2 rumble 334 1.40.10.2 rumble int 335 1.40.10.2 rumble msdosfs_setattr(v) 336 1.40.10.2 rumble void *v; 337 1.40.10.2 rumble { 338 1.40.10.2 rumble struct vop_setattr_args /* { 339 1.40.10.2 rumble struct vnode *a_vp; 340 1.40.10.2 rumble struct vattr *a_vap; 341 1.40.10.2 rumble kauth_cred_t a_cred; 342 1.40.10.2 rumble struct lwp *a_l; 343 1.40.10.2 rumble } */ *ap = v; 344 1.40.10.2 rumble int error = 0, de_changed = 0; 345 1.40.10.2 rumble struct denode *dep = VTODE(ap->a_vp); 346 1.40.10.2 rumble struct msdosfsmount *pmp = dep->de_pmp; 347 1.40.10.2 rumble struct vnode *vp = ap->a_vp; 348 1.40.10.2 rumble struct vattr *vap = ap->a_vap; 349 1.40.10.2 rumble kauth_cred_t cred = ap->a_cred; 350 1.40.10.2 rumble 351 1.40.10.2 rumble #ifdef MSDOSFS_DEBUG 352 1.40.10.2 rumble printf("msdosfs_setattr(): vp %p, vap %p, cred %p, p %p\n", 353 1.40.10.2 rumble ap->a_vp, vap, cred, ap->a_l); 354 1.40.10.2 rumble #endif 355 1.40.10.2 rumble /* 356 1.40.10.2 rumble * Note we silently ignore uid or gid changes. 357 1.40.10.2 rumble */ 358 1.40.10.2 rumble if ((vap->va_type != VNON) || (vap->va_nlink != (nlink_t)VNOVAL) || 359 1.40.10.2 rumble (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || 360 1.40.10.2 rumble (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || 361 1.40.10.2 rumble (vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL) || 362 1.40.10.2 rumble (vap->va_uid != VNOVAL && vap->va_uid != pmp->pm_uid) || 363 1.40.10.2 rumble (vap->va_gid != VNOVAL && vap->va_gid != pmp->pm_gid)) { 364 1.40.10.2 rumble #ifdef MSDOSFS_DEBUG 365 1.40.10.2 rumble printf("msdosfs_setattr(): returning EINVAL\n"); 366 1.40.10.2 rumble printf(" va_type %d, va_nlink %x, va_fsid %lx, va_fileid %llx\n", 367 1.40.10.2 rumble vap->va_type, vap->va_nlink, vap->va_fsid, 368 1.40.10.2 rumble (unsigned long long)vap->va_fileid); 369 1.40.10.2 rumble printf(" va_blocksize %lx, va_rdev %x, va_bytes %qx, va_gen %lx\n", 370 1.40.10.2 rumble vap->va_blocksize, vap->va_rdev, (long long)vap->va_bytes, vap->va_gen); 371 1.40.10.2 rumble #endif 372 1.40.10.2 rumble return (EINVAL); 373 1.40.10.2 rumble } 374 1.40.10.2 rumble /* 375 1.40.10.2 rumble * Silently ignore attributes modifications on directories. 376 1.40.10.2 rumble */ 377 1.40.10.2 rumble if (ap->a_vp->v_type == VDIR) 378 1.40.10.2 rumble return 0; 379 1.40.10.2 rumble 380 1.40.10.2 rumble if (vap->va_size != VNOVAL) { 381 1.40.10.2 rumble if (vp->v_mount->mnt_flag & MNT_RDONLY) 382 1.40.10.2 rumble return (EROFS); 383 1.40.10.2 rumble error = detrunc(dep, (u_long)vap->va_size, 0, cred, ap->a_l); 384 1.40.10.2 rumble if (error) 385 1.40.10.2 rumble return (error); 386 1.40.10.2 rumble de_changed = 1; 387 1.40.10.2 rumble } 388 1.40.10.2 rumble if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) { 389 1.40.10.2 rumble if (vp->v_mount->mnt_flag & MNT_RDONLY) 390 1.40.10.2 rumble return (EROFS); 391 1.40.10.2 rumble if (kauth_cred_geteuid(cred) != pmp->pm_uid && 392 1.40.10.2 rumble (error = kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER, 393 1.40.10.2 rumble NULL)) && 394 1.40.10.2 rumble ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 395 1.40.10.2 rumble (error = VOP_ACCESS(ap->a_vp, VWRITE, cred, ap->a_l)))) 396 1.40.10.2 rumble return (error); 397 1.40.10.2 rumble if ((pmp->pm_flags & MSDOSFSMNT_NOWIN95) == 0 && 398 1.40.10.2 rumble vap->va_atime.tv_sec != VNOVAL) 399 1.40.10.2 rumble unix2dostime(&vap->va_atime, pmp->pm_gmtoff, &dep->de_ADate, NULL, NULL); 400 1.40.10.2 rumble if (vap->va_mtime.tv_sec != VNOVAL) 401 1.40.10.2 rumble unix2dostime(&vap->va_mtime, pmp->pm_gmtoff, &dep->de_MDate, &dep->de_MTime, NULL); 402 1.40.10.2 rumble dep->de_Attributes |= ATTR_ARCHIVE; 403 1.40.10.2 rumble dep->de_flag |= DE_MODIFIED; 404 1.40.10.2 rumble de_changed = 1; 405 1.40.10.2 rumble } 406 1.40.10.2 rumble /* 407 1.40.10.2 rumble * DOS files only have the ability to have their writability 408 1.40.10.2 rumble * attribute set, so we use the owner write bit to set the readonly 409 1.40.10.2 rumble * attribute. 410 1.40.10.2 rumble */ 411 1.40.10.2 rumble if (vap->va_mode != (mode_t)VNOVAL) { 412 1.40.10.2 rumble if (vp->v_mount->mnt_flag & MNT_RDONLY) 413 1.40.10.2 rumble return (EROFS); 414 1.40.10.2 rumble if (kauth_cred_geteuid(cred) != pmp->pm_uid && 415 1.40.10.2 rumble (error = kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER, 416 1.40.10.2 rumble NULL))) 417 1.40.10.2 rumble return (error); 418 1.40.10.2 rumble /* We ignore the read and execute bits. */ 419 1.40.10.2 rumble if (vap->va_mode & S_IWUSR) 420 1.40.10.2 rumble dep->de_Attributes &= ~ATTR_READONLY; 421 1.40.10.2 rumble else 422 1.40.10.2 rumble dep->de_Attributes |= ATTR_READONLY; 423 1.40.10.2 rumble dep->de_flag |= DE_MODIFIED; 424 1.40.10.2 rumble de_changed = 1; 425 1.40.10.2 rumble } 426 1.40.10.2 rumble /* 427 1.40.10.2 rumble * Allow the `archived' bit to be toggled. 428 1.40.10.2 rumble */ 429 1.40.10.2 rumble if (vap->va_flags != VNOVAL) { 430 1.40.10.2 rumble if (vp->v_mount->mnt_flag & MNT_RDONLY) 431 1.40.10.2 rumble return (EROFS); 432 1.40.10.2 rumble if (kauth_cred_geteuid(cred) != pmp->pm_uid && 433 1.40.10.2 rumble (error = kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER, 434 1.40.10.2 rumble NULL))) 435 1.40.10.2 rumble return (error); 436 1.40.10.2 rumble if (vap->va_flags & SF_ARCHIVED) 437 1.40.10.2 rumble dep->de_Attributes &= ~ATTR_ARCHIVE; 438 1.40.10.2 rumble else 439 1.40.10.2 rumble dep->de_Attributes |= ATTR_ARCHIVE; 440 1.40.10.2 rumble dep->de_flag |= DE_MODIFIED; 441 1.40.10.2 rumble de_changed = 1; 442 1.40.10.2 rumble } 443 1.40.10.2 rumble 444 1.40.10.2 rumble if (de_changed) { 445 1.40.10.2 rumble VN_KNOTE(vp, NOTE_ATTRIB); 446 1.40.10.2 rumble return (deupdat(dep, 1)); 447 1.40.10.2 rumble } else 448 1.40.10.2 rumble return (0); 449 1.40.10.2 rumble } 450 1.40.10.2 rumble 451 1.40.10.2 rumble int 452 1.40.10.2 rumble msdosfs_read(v) 453 1.40.10.2 rumble void *v; 454 1.40.10.2 rumble { 455 1.40.10.2 rumble struct vop_read_args /* { 456 1.40.10.2 rumble struct vnode *a_vp; 457 1.40.10.2 rumble struct uio *a_uio; 458 1.40.10.2 rumble int a_ioflag; 459 1.40.10.2 rumble kauth_cred_t a_cred; 460 1.40.10.2 rumble } */ *ap = v; 461 1.40.10.2 rumble int error = 0, flags; 462 1.40.10.2 rumble int64_t diff; 463 1.40.10.2 rumble int blsize; 464 1.40.10.2 rumble long n; 465 1.40.10.2 rumble long on; 466 1.40.10.2 rumble daddr_t lbn; 467 1.40.10.2 rumble void *win; 468 1.40.10.2 rumble vsize_t bytelen; 469 1.40.10.2 rumble struct buf *bp; 470 1.40.10.2 rumble struct vnode *vp = ap->a_vp; 471 1.40.10.2 rumble struct denode *dep = VTODE(vp); 472 1.40.10.2 rumble struct msdosfsmount *pmp = dep->de_pmp; 473 1.40.10.2 rumble struct uio *uio = ap->a_uio; 474 1.40.10.2 rumble 475 1.40.10.2 rumble /* 476 1.40.10.2 rumble * If they didn't ask for any data, then we are done. 477 1.40.10.2 rumble */ 478 1.40.10.2 rumble 479 1.40.10.2 rumble if (uio->uio_resid == 0) 480 1.40.10.2 rumble return (0); 481 1.40.10.2 rumble if (uio->uio_offset < 0) 482 1.40.10.2 rumble return (EINVAL); 483 1.40.10.2 rumble if (uio->uio_offset >= dep->de_FileSize) 484 1.40.10.2 rumble return (0); 485 1.40.10.2 rumble 486 1.40.10.2 rumble if (vp->v_type == VREG) { 487 1.40.10.2 rumble const int advice = IO_ADV_DECODE(ap->a_ioflag); 488 1.40.10.2 rumble 489 1.40.10.2 rumble while (uio->uio_resid > 0) { 490 1.40.10.2 rumble bytelen = MIN(dep->de_FileSize - uio->uio_offset, 491 1.40.10.2 rumble uio->uio_resid); 492 1.40.10.2 rumble 493 1.40.10.2 rumble if (bytelen == 0) 494 1.40.10.2 rumble break; 495 1.40.10.2 rumble win = ubc_alloc(&vp->v_uobj, uio->uio_offset, 496 1.40.10.2 rumble &bytelen, advice, UBC_READ); 497 1.40.10.2 rumble error = uiomove(win, bytelen, uio); 498 1.40.10.2 rumble flags = UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0; 499 1.40.10.2 rumble ubc_release(win, flags); 500 1.40.10.2 rumble if (error) 501 1.40.10.2 rumble break; 502 1.40.10.2 rumble } 503 1.40.10.2 rumble dep->de_flag |= DE_ACCESS; 504 1.40.10.2 rumble goto out; 505 1.40.10.2 rumble } 506 1.40.10.2 rumble 507 1.40.10.2 rumble /* this loop is only for directories now */ 508 1.40.10.2 rumble do { 509 1.40.10.2 rumble lbn = de_cluster(pmp, uio->uio_offset); 510 1.40.10.2 rumble on = uio->uio_offset & pmp->pm_crbomask; 511 1.40.10.2 rumble n = MIN(pmp->pm_bpcluster - on, uio->uio_resid); 512 1.40.10.2 rumble if (uio->uio_offset >= dep->de_FileSize) 513 1.40.10.2 rumble return (0); 514 1.40.10.2 rumble /* file size (and hence diff) may be up to 4GB */ 515 1.40.10.2 rumble diff = dep->de_FileSize - uio->uio_offset; 516 1.40.10.2 rumble if (diff < n) 517 1.40.10.2 rumble n = (long) diff; 518 1.40.10.2 rumble 519 1.40.10.2 rumble /* convert cluster # to sector # */ 520 1.40.10.2 rumble error = pcbmap(dep, lbn, &lbn, 0, &blsize); 521 1.40.10.2 rumble if (error) 522 1.40.10.2 rumble return (error); 523 1.40.10.2 rumble 524 1.40.10.2 rumble /* 525 1.40.10.2 rumble * If we are operating on a directory file then be sure to 526 1.40.10.2 rumble * do i/o with the vnode for the filesystem instead of the 527 1.40.10.2 rumble * vnode for the directory. 528 1.40.10.2 rumble */ 529 1.40.10.2 rumble error = bread(pmp->pm_devvp, de_bn2kb(pmp, lbn), blsize, 530 1.40.10.2 rumble NOCRED, &bp); 531 1.40.10.2 rumble n = MIN(n, pmp->pm_bpcluster - bp->b_resid); 532 1.40.10.2 rumble if (error) { 533 1.40.10.2 rumble brelse(bp); 534 1.40.10.2 rumble return (error); 535 1.40.10.2 rumble } 536 1.40.10.2 rumble error = uiomove((char *)bp->b_data + on, (int) n, uio); 537 1.40.10.2 rumble brelse(bp); 538 1.40.10.2 rumble } while (error == 0 && uio->uio_resid > 0 && n != 0); 539 1.40.10.2 rumble 540 1.40.10.2 rumble out: 541 1.40.10.2 rumble if ((ap->a_ioflag & IO_SYNC) == IO_SYNC) 542 1.40.10.2 rumble error = deupdat(dep, 1); 543 1.40.10.2 rumble return (error); 544 1.40.10.2 rumble } 545 1.40.10.2 rumble 546 1.40.10.2 rumble /* 547 1.40.10.2 rumble * Write data to a file or directory. 548 1.40.10.2 rumble */ 549 1.40.10.2 rumble int 550 1.40.10.2 rumble msdosfs_write(v) 551 1.40.10.2 rumble void *v; 552 1.40.10.2 rumble { 553 1.40.10.2 rumble struct vop_write_args /* { 554 1.40.10.2 rumble struct vnode *a_vp; 555 1.40.10.2 rumble struct uio *a_uio; 556 1.40.10.2 rumble int a_ioflag; 557 1.40.10.2 rumble kauth_cred_t a_cred; 558 1.40.10.2 rumble } */ *ap = v; 559 1.40.10.2 rumble int resid, flags, extended = 0; 560 1.40.10.2 rumble int error = 0; 561 1.40.10.2 rumble int ioflag = ap->a_ioflag; 562 1.40.10.2 rumble u_long osize; 563 1.40.10.2 rumble u_long count; 564 1.40.10.2 rumble void *win; 565 1.40.10.2 rumble vsize_t bytelen; 566 1.40.10.2 rumble off_t oldoff; 567 1.40.10.2 rumble struct uio *uio = ap->a_uio; 568 1.40.10.2 rumble struct proc *p = curproc; 569 1.40.10.2 rumble struct vnode *vp = ap->a_vp; 570 1.40.10.2 rumble struct denode *dep = VTODE(vp); 571 1.40.10.2 rumble struct msdosfsmount *pmp = dep->de_pmp; 572 1.40.10.2 rumble kauth_cred_t cred = ap->a_cred; 573 1.40.10.2 rumble bool async; 574 1.40.10.2 rumble 575 1.40.10.2 rumble #ifdef MSDOSFS_DEBUG 576 1.40.10.2 rumble printf("msdosfs_write(vp %p, uio %p, ioflag %x, cred %p\n", 577 1.40.10.2 rumble vp, uio, ioflag, cred); 578 1.40.10.2 rumble printf("msdosfs_write(): diroff %lu, dirclust %lu, startcluster %lu\n", 579 1.40.10.2 rumble dep->de_diroffset, dep->de_dirclust, dep->de_StartCluster); 580 1.40.10.2 rumble #endif 581 1.40.10.2 rumble 582 1.40.10.2 rumble switch (vp->v_type) { 583 1.40.10.2 rumble case VREG: 584 1.40.10.2 rumble if (ioflag & IO_APPEND) 585 1.40.10.2 rumble uio->uio_offset = dep->de_FileSize; 586 1.40.10.2 rumble break; 587 1.40.10.2 rumble case VDIR: 588 1.40.10.2 rumble return EISDIR; 589 1.40.10.2 rumble default: 590 1.40.10.2 rumble panic("msdosfs_write(): bad file type"); 591 1.40.10.2 rumble } 592 1.40.10.2 rumble 593 1.40.10.2 rumble if (uio->uio_offset < 0) 594 1.40.10.2 rumble return (EINVAL); 595 1.40.10.2 rumble 596 1.40.10.2 rumble if (uio->uio_resid == 0) 597 1.40.10.2 rumble return (0); 598 1.40.10.2 rumble 599 1.40.10.2 rumble /* Don't bother to try to write files larger than the fs limit */ 600 1.40.10.2 rumble if (uio->uio_offset + uio->uio_resid > MSDOSFS_FILESIZE_MAX) 601 1.40.10.2 rumble return (EFBIG); 602 1.40.10.2 rumble 603 1.40.10.2 rumble /* 604 1.40.10.2 rumble * If they've exceeded their filesize limit, tell them about it. 605 1.40.10.2 rumble */ 606 1.40.10.2 rumble if (((uio->uio_offset + uio->uio_resid) > 607 1.40.10.2 rumble p->p_rlimit[RLIMIT_FSIZE].rlim_cur)) { 608 1.40.10.2 rumble mutex_enter(&proclist_mutex); 609 1.40.10.2 rumble psignal(p, SIGXFSZ); 610 1.40.10.2 rumble mutex_exit(&proclist_mutex); 611 1.40.10.2 rumble return (EFBIG); 612 1.40.10.2 rumble } 613 1.40.10.2 rumble 614 1.40.10.2 rumble /* 615 1.40.10.2 rumble * If the offset we are starting the write at is beyond the end of 616 1.40.10.2 rumble * the file, then they've done a seek. Unix filesystems allow 617 1.40.10.2 rumble * files with holes in them, DOS doesn't so we must fill the hole 618 1.40.10.2 rumble * with zeroed blocks. 619 1.40.10.2 rumble */ 620 1.40.10.2 rumble if (uio->uio_offset > dep->de_FileSize) { 621 1.40.10.2 rumble if ((error = deextend(dep, uio->uio_offset, cred)) != 0) 622 1.40.10.2 rumble return (error); 623 1.40.10.2 rumble } 624 1.40.10.2 rumble 625 1.40.10.2 rumble /* 626 1.40.10.2 rumble * Remember some values in case the write fails. 627 1.40.10.2 rumble */ 628 1.40.10.2 rumble async = vp->v_mount->mnt_flag & MNT_ASYNC; 629 1.40.10.2 rumble resid = uio->uio_resid; 630 1.40.10.2 rumble osize = dep->de_FileSize; 631 1.40.10.2 rumble 632 1.40.10.2 rumble /* 633 1.40.10.2 rumble * If we write beyond the end of the file, extend it to its ultimate 634 1.40.10.2 rumble * size ahead of the time to hopefully get a contiguous area. 635 1.40.10.2 rumble */ 636 1.40.10.2 rumble if (uio->uio_offset + resid > osize) { 637 1.40.10.2 rumble count = de_clcount(pmp, uio->uio_offset + resid) - 638 1.40.10.2 rumble de_clcount(pmp, osize); 639 1.40.10.2 rumble if ((error = extendfile(dep, count, NULL, NULL, 0)) && 640 1.40.10.2 rumble (error != ENOSPC || (ioflag & IO_UNIT))) 641 1.40.10.2 rumble goto errexit; 642 1.40.10.2 rumble 643 1.40.10.2 rumble dep->de_FileSize = uio->uio_offset + resid; 644 1.40.10.2 rumble uvm_vnp_setsize(vp, dep->de_FileSize); 645 1.40.10.2 rumble extended = 1; 646 1.40.10.2 rumble } 647 1.40.10.2 rumble 648 1.40.10.2 rumble do { 649 1.40.10.2 rumble oldoff = uio->uio_offset; 650 1.40.10.2 rumble bytelen = uio->uio_resid; 651 1.40.10.2 rumble 652 1.40.10.2 rumble win = ubc_alloc(&vp->v_uobj, oldoff, &bytelen, UVM_ADV_NORMAL, 653 1.40.10.2 rumble UBC_WRITE); 654 1.40.10.2 rumble error = uiomove(win, bytelen, uio); 655 1.40.10.2 rumble flags = UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0; 656 1.40.10.2 rumble ubc_release(win, flags); 657 1.40.10.2 rumble if (error) 658 1.40.10.2 rumble break; 659 1.40.10.2 rumble 660 1.40.10.2 rumble /* 661 1.40.10.2 rumble * flush what we just wrote if necessary. 662 1.40.10.2 rumble * XXXUBC simplistic async flushing. 663 1.40.10.2 rumble */ 664 1.40.10.2 rumble 665 1.40.10.2 rumble if (!async && oldoff >> 16 != uio->uio_offset >> 16) { 666 1.40.10.2 rumble simple_lock(&vp->v_interlock); 667 1.40.10.2 rumble error = VOP_PUTPAGES(vp, (oldoff >> 16) << 16, 668 1.40.10.2 rumble (uio->uio_offset >> 16) << 16, PGO_CLEANIT); 669 1.40.10.2 rumble } 670 1.40.10.2 rumble } while (error == 0 && uio->uio_resid > 0); 671 1.40.10.2 rumble if (error == 0 && ioflag & IO_SYNC) { 672 1.40.10.2 rumble simple_lock(&vp->v_interlock); 673 1.40.10.2 rumble error = VOP_PUTPAGES(vp, trunc_page(oldoff), 674 1.40.10.2 rumble round_page(oldoff + bytelen), PGO_CLEANIT | PGO_SYNCIO); 675 1.40.10.2 rumble } 676 1.40.10.2 rumble dep->de_flag |= DE_UPDATE; 677 1.40.10.2 rumble 678 1.40.10.2 rumble /* 679 1.40.10.2 rumble * If the write failed and they want us to, truncate the file back 680 1.40.10.2 rumble * to the size it was before the write was attempted. 681 1.40.10.2 rumble */ 682 1.40.10.2 rumble errexit: 683 1.40.10.2 rumble if (resid > uio->uio_resid) 684 1.40.10.2 rumble VN_KNOTE(vp, NOTE_WRITE | (extended ? NOTE_EXTEND : 0)); 685 1.40.10.2 rumble if (error) { 686 1.40.10.2 rumble detrunc(dep, osize, ioflag & IO_SYNC, NOCRED, NULL); 687 1.40.10.2 rumble uio->uio_offset -= resid - uio->uio_resid; 688 1.40.10.2 rumble uio->uio_resid = resid; 689 1.40.10.2 rumble } else if ((ioflag & IO_SYNC) == IO_SYNC) 690 1.40.10.2 rumble error = deupdat(dep, 1); 691 1.40.10.2 rumble KASSERT(vp->v_size == dep->de_FileSize); 692 1.40.10.2 rumble return (error); 693 1.40.10.2 rumble } 694 1.40.10.2 rumble 695 1.40.10.2 rumble int 696 1.40.10.2 rumble msdosfs_update(struct vnode *vp, const struct timespec *acc, 697 1.40.10.2 rumble const struct timespec *mod, int flags) 698 1.40.10.2 rumble { 699 1.40.10.2 rumble struct buf *bp; 700 1.40.10.2 rumble struct direntry *dirp; 701 1.40.10.2 rumble struct denode *dep; 702 1.40.10.2 rumble int error; 703 1.40.10.2 rumble 704 1.40.10.2 rumble if (vp->v_mount->mnt_flag & MNT_RDONLY) 705 1.40.10.2 rumble return (0); 706 1.40.10.2 rumble dep = VTODE(vp); 707 1.40.10.2 rumble DETIMES(dep, acc, mod, NULL, dep->de_pmp->pm_gmtoff); 708 1.40.10.2 rumble if ((dep->de_flag & DE_MODIFIED) == 0) 709 1.40.10.2 rumble return (0); 710 1.40.10.2 rumble dep->de_flag &= ~DE_MODIFIED; 711 1.40.10.2 rumble if (dep->de_Attributes & ATTR_DIRECTORY) 712 1.40.10.2 rumble return (0); 713 1.40.10.2 rumble if (dep->de_refcnt <= 0) 714 1.40.10.2 rumble return (0); 715 1.40.10.2 rumble error = readde(dep, &bp, &dirp); 716 1.40.10.2 rumble if (error) 717 1.40.10.2 rumble return (error); 718 1.40.10.2 rumble DE_EXTERNALIZE(dirp, dep); 719 1.40.10.2 rumble if (flags & (UPDATE_WAIT|UPDATE_DIROP)) 720 1.40.10.2 rumble return (bwrite(bp)); 721 1.40.10.2 rumble else { 722 1.40.10.2 rumble bdwrite(bp); 723 1.40.10.2 rumble return (0); 724 1.40.10.2 rumble } 725 1.40.10.2 rumble } 726 1.40.10.2 rumble 727 1.40.10.2 rumble /* 728 1.40.10.2 rumble * Flush the blocks of a file to disk. 729 1.40.10.2 rumble * 730 1.40.10.2 rumble * This function is worthless for vnodes that represent directories. Maybe we 731 1.40.10.2 rumble * could just do a sync if they try an fsync on a directory file. 732 1.40.10.2 rumble */ 733 1.40.10.2 rumble int 734 1.40.10.2 rumble msdosfs_remove(v) 735 1.40.10.2 rumble void *v; 736 1.40.10.2 rumble { 737 1.40.10.2 rumble struct vop_remove_args /* { 738 1.40.10.2 rumble struct vnode *a_dvp; 739 1.40.10.2 rumble struct vnode *a_vp; 740 1.40.10.2 rumble struct componentname *a_cnp; 741 1.40.10.2 rumble } */ *ap = v; 742 1.40.10.2 rumble struct denode *dep = VTODE(ap->a_vp); 743 1.40.10.2 rumble struct denode *ddep = VTODE(ap->a_dvp); 744 1.40.10.2 rumble int error; 745 1.40.10.2 rumble 746 1.40.10.2 rumble if (ap->a_vp->v_type == VDIR) 747 1.40.10.2 rumble error = EPERM; 748 1.40.10.2 rumble else 749 1.40.10.2 rumble error = removede(ddep, dep); 750 1.40.10.2 rumble #ifdef MSDOSFS_DEBUG 751 1.40.10.2 rumble printf("msdosfs_remove(), dep %p, v_usecount %d\n", 752 1.40.10.2 rumble dep, ap->a_vp->v_usecount); 753 1.40.10.2 rumble #endif 754 1.40.10.2 rumble VN_KNOTE(ap->a_vp, NOTE_DELETE); 755 1.40.10.2 rumble VN_KNOTE(ap->a_dvp, NOTE_WRITE); 756 1.40.10.2 rumble if (ddep == dep) 757 1.40.10.2 rumble vrele(ap->a_vp); 758 1.40.10.2 rumble else 759 1.40.10.2 rumble vput(ap->a_vp); /* causes msdosfs_inactive() to be called 760 1.40.10.2 rumble * via vrele() */ 761 1.40.10.2 rumble vput(ap->a_dvp); 762 1.40.10.2 rumble return (error); 763 1.40.10.2 rumble } 764 1.40.10.2 rumble 765 1.40.10.2 rumble /* 766 1.40.10.2 rumble * DOS filesystems don't know what links are. But since we already called 767 1.40.10.2 rumble * msdosfs_lookup() with create and lockparent, the parent is locked so we 768 1.40.10.2 rumble * have to free it before we return the error. 769 1.40.10.2 rumble */ 770 1.40.10.2 rumble int 771 1.40.10.2 rumble msdosfs_link(v) 772 1.40.10.2 rumble void *v; 773 1.40.10.2 rumble { 774 1.40.10.2 rumble struct vop_link_args /* { 775 1.40.10.2 rumble struct vnode *a_dvp; 776 1.40.10.2 rumble struct vnode *a_vp; 777 1.40.10.2 rumble struct componentname *a_cnp; 778 1.40.10.2 rumble } */ *ap = v; 779 1.40.10.2 rumble 780 1.40.10.2 rumble VOP_ABORTOP(ap->a_dvp, ap->a_cnp); 781 1.40.10.2 rumble vput(ap->a_dvp); 782 1.40.10.2 rumble return (EOPNOTSUPP); 783 1.40.10.2 rumble } 784 1.40.10.2 rumble 785 1.40.10.2 rumble /* 786 1.40.10.2 rumble * Renames on files require moving the denode to a new hash queue since the 787 1.40.10.2 rumble * denode's location is used to compute which hash queue to put the file 788 1.40.10.2 rumble * in. Unless it is a rename in place. For example "mv a b". 789 1.40.10.2 rumble * 790 1.40.10.2 rumble * What follows is the basic algorithm: 791 1.40.10.2 rumble * 792 1.40.10.2 rumble * if (file move) { 793 1.40.10.2 rumble * if (dest file exists) { 794 1.40.10.2 rumble * remove dest file 795 1.40.10.2 rumble * } 796 1.40.10.2 rumble * if (dest and src in same directory) { 797 1.40.10.2 rumble * rewrite name in existing directory slot 798 1.40.10.2 rumble * } else { 799 1.40.10.2 rumble * write new entry in dest directory 800 1.40.10.2 rumble * update offset and dirclust in denode 801 1.40.10.2 rumble * move denode to new hash chain 802 1.40.10.2 rumble * clear old directory entry 803 1.40.10.2 rumble * } 804 1.40.10.2 rumble * } else { 805 1.40.10.2 rumble * directory move 806 1.40.10.2 rumble * if (dest directory exists) { 807 1.40.10.2 rumble * if (dest is not empty) { 808 1.40.10.2 rumble * return ENOTEMPTY 809 1.40.10.2 rumble * } 810 1.40.10.2 rumble * remove dest directory 811 1.40.10.2 rumble * } 812 1.40.10.2 rumble * if (dest and src in same directory) { 813 1.40.10.2 rumble * rewrite name in existing entry 814 1.40.10.2 rumble * } else { 815 1.40.10.2 rumble * be sure dest is not a child of src directory 816 1.40.10.2 rumble * write entry in dest directory 817 1.40.10.2 rumble * update "." and ".." in moved directory 818 1.40.10.2 rumble * update offset and dirclust in denode 819 1.40.10.2 rumble * move denode to new hash chain 820 1.40.10.2 rumble * clear old directory entry for moved directory 821 1.40.10.2 rumble * } 822 1.40.10.2 rumble * } 823 1.40.10.2 rumble * 824 1.40.10.2 rumble * On entry: 825 1.40.10.2 rumble * source's parent directory is unlocked 826 1.40.10.2 rumble * source file or directory is unlocked 827 1.40.10.2 rumble * destination's parent directory is locked 828 1.40.10.2 rumble * destination file or directory is locked if it exists 829 1.40.10.2 rumble * 830 1.40.10.2 rumble * On exit: 831 1.40.10.2 rumble * all denodes should be released 832 1.40.10.2 rumble * 833 1.40.10.2 rumble * Notes: 834 1.40.10.2 rumble * I'm not sure how the memory containing the pathnames pointed at by the 835 1.40.10.2 rumble * componentname structures is freed, there may be some memory bleeding 836 1.40.10.2 rumble * for each rename done. 837 1.40.10.2 rumble */ 838 1.40.10.2 rumble int 839 1.40.10.2 rumble msdosfs_rename(v) 840 1.40.10.2 rumble void *v; 841 1.40.10.2 rumble { 842 1.40.10.2 rumble struct vop_rename_args /* { 843 1.40.10.2 rumble struct vnode *a_fdvp; 844 1.40.10.2 rumble struct vnode *a_fvp; 845 1.40.10.2 rumble struct componentname *a_fcnp; 846 1.40.10.2 rumble struct vnode *a_tdvp; 847 1.40.10.2 rumble struct vnode *a_tvp; 848 1.40.10.2 rumble struct componentname *a_tcnp; 849 1.40.10.2 rumble } */ *ap = v; 850 1.40.10.2 rumble struct vnode *tvp = ap->a_tvp; 851 1.40.10.2 rumble struct vnode *tdvp = ap->a_tdvp; 852 1.40.10.2 rumble struct vnode *fvp = ap->a_fvp; 853 1.40.10.2 rumble struct vnode *fdvp = ap->a_fdvp; 854 1.40.10.2 rumble struct componentname *tcnp = ap->a_tcnp; 855 1.40.10.2 rumble struct componentname *fcnp = ap->a_fcnp; 856 1.40.10.2 rumble struct lwp *l = tcnp->cn_lwp; 857 1.40.10.2 rumble struct denode *ip, *xp, *dp, *zp; 858 1.40.10.2 rumble u_char toname[11], oldname[11]; 859 1.40.10.2 rumble u_long from_diroffset, to_diroffset; 860 1.40.10.2 rumble u_char to_count; 861 1.40.10.2 rumble int doingdirectory = 0, newparent = 0; 862 1.40.10.2 rumble int error; 863 1.40.10.2 rumble u_long cn; 864 1.40.10.2 rumble daddr_t bn; 865 1.40.10.2 rumble struct msdosfsmount *pmp; 866 1.40.10.2 rumble struct direntry *dotdotp; 867 1.40.10.2 rumble struct buf *bp; 868 1.40.10.2 rumble int fdvp_dorele = 0; 869 1.40.10.2 rumble 870 1.40.10.2 rumble pmp = VFSTOMSDOSFS(fdvp->v_mount); 871 1.40.10.2 rumble 872 1.40.10.2 rumble #ifdef DIAGNOSTIC 873 1.40.10.2 rumble if ((tcnp->cn_flags & HASBUF) == 0 || 874 1.40.10.2 rumble (fcnp->cn_flags & HASBUF) == 0) 875 1.40.10.2 rumble panic("msdosfs_rename: no name"); 876 1.40.10.2 rumble #endif 877 1.40.10.2 rumble /* 878 1.40.10.2 rumble * Check for cross-device rename. 879 1.40.10.2 rumble */ 880 1.40.10.2 rumble if ((fvp->v_mount != tdvp->v_mount) || 881 1.40.10.2 rumble (tvp && (fvp->v_mount != tvp->v_mount))) { 882 1.40.10.2 rumble error = EXDEV; 883 1.40.10.2 rumble abortit: 884 1.40.10.2 rumble VOP_ABORTOP(tdvp, tcnp); 885 1.40.10.2 rumble if (tdvp == tvp) 886 1.40.10.2 rumble vrele(tdvp); 887 1.40.10.2 rumble else 888 1.40.10.2 rumble vput(tdvp); 889 1.40.10.2 rumble if (tvp) 890 1.40.10.2 rumble vput(tvp); 891 1.40.10.2 rumble VOP_ABORTOP(fdvp, fcnp); 892 1.40.10.2 rumble vrele(fdvp); 893 1.40.10.2 rumble vrele(fvp); 894 1.40.10.2 rumble return (error); 895 1.40.10.2 rumble } 896 1.40.10.2 rumble 897 1.40.10.2 rumble /* 898 1.40.10.2 rumble * If source and dest are the same, do nothing. 899 1.40.10.2 rumble */ 900 1.40.10.2 rumble if (tvp == fvp) { 901 1.40.10.2 rumble error = 0; 902 1.40.10.2 rumble goto abortit; 903 1.40.10.2 rumble } 904 1.40.10.2 rumble 905 1.40.10.2 rumble /* */ 906 1.40.10.2 rumble if ((error = vn_lock(fvp, LK_EXCLUSIVE)) != 0) 907 1.40.10.2 rumble goto abortit; 908 1.40.10.2 rumble dp = VTODE(fdvp); 909 1.40.10.2 rumble ip = VTODE(fvp); 910 1.40.10.2 rumble 911 1.40.10.2 rumble /* 912 1.40.10.2 rumble * Be sure we are not renaming ".", "..", or an alias of ".". This 913 1.40.10.2 rumble * leads to a crippled directory tree. It's pretty tough to do a 914 1.40.10.2 rumble * "ls" or "pwd" with the "." directory entry missing, and "cd .." 915 1.40.10.2 rumble * doesn't work if the ".." entry is missing. 916 1.40.10.2 rumble */ 917 1.40.10.2 rumble if (ip->de_Attributes & ATTR_DIRECTORY) { 918 1.40.10.2 rumble /* 919 1.40.10.2 rumble * Avoid ".", "..", and aliases of "." for obvious reasons. 920 1.40.10.2 rumble */ 921 1.40.10.2 rumble if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') || 922 1.40.10.2 rumble dp == ip || 923 1.40.10.2 rumble (fcnp->cn_flags & ISDOTDOT) || 924 1.40.10.2 rumble (tcnp->cn_flags & ISDOTDOT) || 925 1.40.10.2 rumble (ip->de_flag & DE_RENAME)) { 926 1.40.10.2 rumble VOP_UNLOCK(fvp, 0); 927 1.40.10.2 rumble error = EINVAL; 928 1.40.10.2 rumble goto abortit; 929 1.40.10.2 rumble } 930 1.40.10.2 rumble ip->de_flag |= DE_RENAME; 931 1.40.10.2 rumble doingdirectory++; 932 1.40.10.2 rumble } 933 1.40.10.2 rumble VN_KNOTE(fdvp, NOTE_WRITE); /* XXXLUKEM/XXX: right place? */ 934 1.40.10.2 rumble 935 1.40.10.2 rumble /* 936 1.40.10.2 rumble * When the target exists, both the directory 937 1.40.10.2 rumble * and target vnodes are returned locked. 938 1.40.10.2 rumble */ 939 1.40.10.2 rumble dp = VTODE(tdvp); 940 1.40.10.2 rumble xp = tvp ? VTODE(tvp) : NULL; 941 1.40.10.2 rumble /* 942 1.40.10.2 rumble * Remember direntry place to use for destination 943 1.40.10.2 rumble */ 944 1.40.10.2 rumble to_diroffset = dp->de_fndoffset; 945 1.40.10.2 rumble to_count = dp->de_fndcnt; 946 1.40.10.2 rumble 947 1.40.10.2 rumble /* 948 1.40.10.2 rumble * If ".." must be changed (ie the directory gets a new 949 1.40.10.2 rumble * parent) then the source directory must not be in the 950 1.40.10.2 rumble * directory hierarchy above the target, as this would 951 1.40.10.2 rumble * orphan everything below the source directory. Also 952 1.40.10.2 rumble * the user must have write permission in the source so 953 1.40.10.2 rumble * as to be able to change "..". We must repeat the call 954 1.40.10.2 rumble * to namei, as the parent directory is unlocked by the 955 1.40.10.2 rumble * call to doscheckpath(). 956 1.40.10.2 rumble */ 957 1.40.10.2 rumble error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred, l); 958 1.40.10.2 rumble VOP_UNLOCK(fvp, 0); 959 1.40.10.2 rumble if (VTODE(fdvp)->de_StartCluster != VTODE(tdvp)->de_StartCluster) 960 1.40.10.2 rumble newparent = 1; 961 1.40.10.2 rumble vrele(fdvp); 962 1.40.10.2 rumble if (doingdirectory && newparent) { 963 1.40.10.2 rumble if (error) /* write access check above */ 964 1.40.10.2 rumble goto bad; 965 1.40.10.2 rumble if (xp != NULL) 966 1.40.10.2 rumble vput(tvp); 967 1.40.10.2 rumble /* 968 1.40.10.2 rumble * doscheckpath() vput()'s dp, 969 1.40.10.2 rumble * so we have to do a relookup afterwards 970 1.40.10.2 rumble */ 971 1.40.10.2 rumble if ((error = doscheckpath(ip, dp)) != 0) 972 1.40.10.2 rumble goto out; 973 1.40.10.2 rumble if ((tcnp->cn_flags & SAVESTART) == 0) 974 1.40.10.2 rumble panic("msdosfs_rename: lost to startdir"); 975 1.40.10.2 rumble if ((error = relookup(tdvp, &tvp, tcnp)) != 0) 976 1.40.10.2 rumble goto out; 977 1.40.10.2 rumble dp = VTODE(tdvp); 978 1.40.10.2 rumble xp = tvp ? VTODE(tvp) : NULL; 979 1.40.10.2 rumble } 980 1.40.10.2 rumble 981 1.40.10.2 rumble if (xp != NULL) { 982 1.40.10.2 rumble /* 983 1.40.10.2 rumble * Target must be empty if a directory and have no links 984 1.40.10.2 rumble * to it. Also, ensure source and target are compatible 985 1.40.10.2 rumble * (both directories, or both not directories). 986 1.40.10.2 rumble */ 987 1.40.10.2 rumble if (xp->de_Attributes & ATTR_DIRECTORY) { 988 1.40.10.2 rumble if (!dosdirempty(xp)) { 989 1.40.10.2 rumble error = ENOTEMPTY; 990 1.40.10.2 rumble goto bad; 991 1.40.10.2 rumble } 992 1.40.10.2 rumble if (!doingdirectory) { 993 1.40.10.2 rumble error = ENOTDIR; 994 1.40.10.2 rumble goto bad; 995 1.40.10.2 rumble } 996 1.40.10.2 rumble } else if (doingdirectory) { 997 1.40.10.2 rumble error = EISDIR; 998 1.40.10.2 rumble goto bad; 999 1.40.10.2 rumble } 1000 1.40.10.2 rumble if ((error = removede(dp, xp)) != 0) 1001 1.40.10.2 rumble goto bad; 1002 1.40.10.2 rumble VN_KNOTE(tdvp, NOTE_WRITE); 1003 1.40.10.2 rumble VN_KNOTE(tvp, NOTE_DELETE); 1004 1.40.10.2 rumble cache_purge(tvp); 1005 1.40.10.2 rumble vput(tvp); 1006 1.40.10.2 rumble xp = NULL; 1007 1.40.10.2 rumble } 1008 1.40.10.2 rumble 1009 1.40.10.2 rumble /* 1010 1.40.10.2 rumble * Convert the filename in tcnp into a dos filename. We copy this 1011 1.40.10.2 rumble * into the denode and directory entry for the destination 1012 1.40.10.2 rumble * file/directory. 1013 1.40.10.2 rumble */ 1014 1.40.10.2 rumble if ((error = uniqdosname(VTODE(tdvp), tcnp, toname)) != 0) 1015 1.40.10.2 rumble goto abortit; 1016 1.40.10.2 rumble 1017 1.40.10.2 rumble /* 1018 1.40.10.2 rumble * Since from wasn't locked at various places above, 1019 1.40.10.2 rumble * have to do a relookup here. 1020 1.40.10.2 rumble */ 1021 1.40.10.2 rumble fcnp->cn_flags &= ~MODMASK; 1022 1.40.10.2 rumble fcnp->cn_flags |= LOCKPARENT | LOCKLEAF; 1023 1.40.10.2 rumble if ((fcnp->cn_flags & SAVESTART) == 0) 1024 1.40.10.2 rumble panic("msdosfs_rename: lost from startdir"); 1025 1.40.10.2 rumble if (!newparent) 1026 1.40.10.2 rumble VOP_UNLOCK(tdvp, 0); 1027 1.40.10.2 rumble vn_lock(fdvp, LK_EXCLUSIVE | LK_RETRY); 1028 1.40.10.2 rumble if ((error = relookup(fdvp, &fvp, fcnp))) { 1029 1.40.10.2 rumble vput(fdvp); 1030 1.40.10.2 rumble vrele(ap->a_fvp); 1031 1.40.10.2 rumble vrele(tdvp); 1032 1.40.10.2 rumble return (error); 1033 1.40.10.2 rumble } 1034 1.40.10.2 rumble if (fvp == NULL) { 1035 1.40.10.2 rumble /* 1036 1.40.10.2 rumble * From name has disappeared. 1037 1.40.10.2 rumble */ 1038 1.40.10.2 rumble if (doingdirectory) 1039 1.40.10.2 rumble panic("rename: lost dir entry"); 1040 1.40.10.2 rumble vput(fdvp); 1041 1.40.10.2 rumble vrele(ap->a_fvp); 1042 1.40.10.2 rumble vrele(tdvp); 1043 1.40.10.2 rumble return 0; 1044 1.40.10.2 rumble } 1045 1.40.10.2 rumble fdvp_dorele = 1; 1046 1.40.10.2 rumble xp = VTODE(fvp); 1047 1.40.10.2 rumble zp = VTODE(fdvp); 1048 1.40.10.2 rumble from_diroffset = zp->de_fndoffset; 1049 1.40.10.2 rumble 1050 1.40.10.2 rumble /* 1051 1.40.10.2 rumble * Ensure that the directory entry still exists and has not 1052 1.40.10.2 rumble * changed till now. If the source is a file the entry may 1053 1.40.10.2 rumble * have been unlinked or renamed. In either case there is 1054 1.40.10.2 rumble * no further work to be done. If the source is a directory 1055 1.40.10.2 rumble * then it cannot have been rmdir'ed or renamed; this is 1056 1.40.10.2 rumble * prohibited by the DE_RENAME flag. 1057 1.40.10.2 rumble */ 1058 1.40.10.2 rumble if (xp != ip) { 1059 1.40.10.2 rumble if (doingdirectory) 1060 1.40.10.2 rumble panic("rename: lost dir entry"); 1061 1.40.10.2 rumble vrele(ap->a_fvp); 1062 1.40.10.2 rumble VOP_UNLOCK(fvp, 0); 1063 1.40.10.2 rumble if (newparent) 1064 1.40.10.2 rumble VOP_UNLOCK(fdvp, 0); 1065 1.40.10.2 rumble xp = NULL; 1066 1.40.10.2 rumble } else { 1067 1.40.10.2 rumble vrele(fvp); 1068 1.40.10.2 rumble xp = NULL; 1069 1.40.10.2 rumble 1070 1.40.10.2 rumble /* 1071 1.40.10.2 rumble * First write a new entry in the destination 1072 1.40.10.2 rumble * directory and mark the entry in the source directory 1073 1.40.10.2 rumble * as deleted. Then move the denode to the correct hash 1074 1.40.10.2 rumble * chain for its new location in the filesystem. And, if 1075 1.40.10.2 rumble * we moved a directory, then update its .. entry to point 1076 1.40.10.2 rumble * to the new parent directory. 1077 1.40.10.2 rumble */ 1078 1.40.10.2 rumble memcpy(oldname, ip->de_Name, 11); 1079 1.40.10.2 rumble memcpy(ip->de_Name, toname, 11); /* update denode */ 1080 1.40.10.2 rumble dp->de_fndoffset = to_diroffset; 1081 1.40.10.2 rumble dp->de_fndcnt = to_count; 1082 1.40.10.2 rumble error = createde(ip, dp, (struct denode **)0, tcnp); 1083 1.40.10.2 rumble if (error) { 1084 1.40.10.2 rumble memcpy(ip->de_Name, oldname, 11); 1085 1.40.10.2 rumble if (newparent) 1086 1.40.10.2 rumble VOP_UNLOCK(fdvp, 0); 1087 1.40.10.2 rumble VOP_UNLOCK(fvp, 0); 1088 1.40.10.2 rumble goto bad; 1089 1.40.10.2 rumble } 1090 1.40.10.2 rumble ip->de_refcnt++; 1091 1.40.10.2 rumble zp->de_fndoffset = from_diroffset; 1092 1.40.10.2 rumble if ((error = removede(zp, ip)) != 0) { 1093 1.40.10.2 rumble /* XXX should really panic here, fs is corrupt */ 1094 1.40.10.2 rumble if (newparent) 1095 1.40.10.2 rumble VOP_UNLOCK(fdvp, 0); 1096 1.40.10.2 rumble VOP_UNLOCK(fvp, 0); 1097 1.40.10.2 rumble goto bad; 1098 1.40.10.2 rumble } 1099 1.40.10.2 rumble cache_purge(fvp); 1100 1.40.10.2 rumble if (!doingdirectory) { 1101 1.40.10.2 rumble error = pcbmap(dp, de_cluster(pmp, to_diroffset), 0, 1102 1.40.10.2 rumble &ip->de_dirclust, 0); 1103 1.40.10.2 rumble if (error) { 1104 1.40.10.2 rumble /* XXX should really panic here, fs is corrupt */ 1105 1.40.10.2 rumble if (newparent) 1106 1.40.10.2 rumble VOP_UNLOCK(fdvp, 0); 1107 1.40.10.2 rumble VOP_UNLOCK(fvp, 0); 1108 1.40.10.2 rumble goto bad; 1109 1.40.10.2 rumble } 1110 1.40.10.2 rumble ip->de_diroffset = to_diroffset; 1111 1.40.10.2 rumble if (ip->de_dirclust != MSDOSFSROOT) 1112 1.40.10.2 rumble ip->de_diroffset &= pmp->pm_crbomask; 1113 1.40.10.2 rumble } 1114 1.40.10.2 rumble reinsert(ip); 1115 1.40.10.2 rumble if (newparent) 1116 1.40.10.2 rumble VOP_UNLOCK(fdvp, 0); 1117 1.40.10.2 rumble } 1118 1.40.10.2 rumble 1119 1.40.10.2 rumble /* 1120 1.40.10.2 rumble * If we moved a directory to a new parent directory, then we must 1121 1.40.10.2 rumble * fixup the ".." entry in the moved directory. 1122 1.40.10.2 rumble */ 1123 1.40.10.2 rumble if (doingdirectory && newparent) { 1124 1.40.10.2 rumble cn = ip->de_StartCluster; 1125 1.40.10.2 rumble if (cn == MSDOSFSROOT) { 1126 1.40.10.2 rumble /* this should never happen */ 1127 1.40.10.2 rumble panic("msdosfs_rename: updating .. in root directory?"); 1128 1.40.10.2 rumble } else 1129 1.40.10.2 rumble bn = cntobn(pmp, cn); 1130 1.40.10.2 rumble error = bread(pmp->pm_devvp, de_bn2kb(pmp, bn), 1131 1.40.10.2 rumble pmp->pm_bpcluster, NOCRED, &bp); 1132 1.40.10.2 rumble if (error) { 1133 1.40.10.2 rumble /* XXX should really panic here, fs is corrupt */ 1134 1.40.10.2 rumble brelse(bp); 1135 1.40.10.2 rumble VOP_UNLOCK(fvp, 0); 1136 1.40.10.2 rumble goto bad; 1137 1.40.10.2 rumble } 1138 1.40.10.2 rumble dotdotp = (struct direntry *)bp->b_data + 1; 1139 1.40.10.2 rumble putushort(dotdotp->deStartCluster, dp->de_StartCluster); 1140 1.40.10.2 rumble if (FAT32(pmp)) { 1141 1.40.10.2 rumble putushort(dotdotp->deHighClust, 1142 1.40.10.2 rumble dp->de_StartCluster >> 16); 1143 1.40.10.2 rumble } else { 1144 1.40.10.2 rumble putushort(dotdotp->deHighClust, 0); 1145 1.40.10.2 rumble } 1146 1.40.10.2 rumble if ((error = bwrite(bp)) != 0) { 1147 1.40.10.2 rumble /* XXX should really panic here, fs is corrupt */ 1148 1.40.10.2 rumble VOP_UNLOCK(fvp, 0); 1149 1.40.10.2 rumble goto bad; 1150 1.40.10.2 rumble } 1151 1.40.10.2 rumble } 1152 1.40.10.2 rumble 1153 1.40.10.2 rumble VN_KNOTE(fvp, NOTE_RENAME); 1154 1.40.10.2 rumble VOP_UNLOCK(fvp, 0); 1155 1.40.10.2 rumble bad: 1156 1.40.10.2 rumble if (xp) 1157 1.40.10.2 rumble vput(tvp); 1158 1.40.10.2 rumble vput(tdvp); 1159 1.40.10.2 rumble out: 1160 1.40.10.2 rumble ip->de_flag &= ~DE_RENAME; 1161 1.40.10.2 rumble if (fdvp_dorele) 1162 1.40.10.2 rumble vrele(fdvp); 1163 1.40.10.2 rumble vrele(fvp); 1164 1.40.10.2 rumble return (error); 1165 1.40.10.2 rumble 1166 1.40.10.2 rumble } 1167 1.40.10.2 rumble 1168 1.40.10.2 rumble static const struct { 1169 1.40.10.2 rumble struct direntry dot; 1170 1.40.10.2 rumble struct direntry dotdot; 1171 1.40.10.2 rumble } dosdirtemplate = { 1172 1.40.10.2 rumble { ". ", " ", /* the . entry */ 1173 1.40.10.2 rumble ATTR_DIRECTORY, /* file attribute */ 1174 1.40.10.2 rumble 0, /* reserved */ 1175 1.40.10.2 rumble 0, { 0, 0 }, { 0, 0 }, /* create time & date */ 1176 1.40.10.2 rumble { 0, 0 }, /* access date */ 1177 1.40.10.2 rumble { 0, 0 }, /* high bits of start cluster */ 1178 1.40.10.2 rumble { 210, 4 }, { 210, 4 }, /* modify time & date */ 1179 1.40.10.2 rumble { 0, 0 }, /* startcluster */ 1180 1.40.10.2 rumble { 0, 0, 0, 0 } /* filesize */ 1181 1.40.10.2 rumble }, 1182 1.40.10.2 rumble { ".. ", " ", /* the .. entry */ 1183 1.40.10.2 rumble ATTR_DIRECTORY, /* file attribute */ 1184 1.40.10.2 rumble 0, /* reserved */ 1185 1.40.10.2 rumble 0, { 0, 0 }, { 0, 0 }, /* create time & date */ 1186 1.40.10.2 rumble { 0, 0 }, /* access date */ 1187 1.40.10.2 rumble { 0, 0 }, /* high bits of start cluster */ 1188 1.40.10.2 rumble { 210, 4 }, { 210, 4 }, /* modify time & date */ 1189 1.40.10.2 rumble { 0, 0 }, /* startcluster */ 1190 1.40.10.2 rumble { 0, 0, 0, 0 } /* filesize */ 1191 1.40.10.2 rumble } 1192 1.40.10.2 rumble }; 1193 1.40.10.2 rumble 1194 1.40.10.2 rumble int 1195 1.40.10.2 rumble msdosfs_mkdir(v) 1196 1.40.10.2 rumble void *v; 1197 1.40.10.2 rumble { 1198 1.40.10.2 rumble struct vop_mkdir_args /* { 1199 1.40.10.2 rumble struct vnode *a_dvp; 1200 1.40.10.2 rumble struvt vnode **a_vpp; 1201 1.40.10.2 rumble struvt componentname *a_cnp; 1202 1.40.10.2 rumble struct vattr *a_vap; 1203 1.40.10.2 rumble } */ *ap = v; 1204 1.40.10.2 rumble struct componentname *cnp = ap->a_cnp; 1205 1.40.10.2 rumble struct denode ndirent; 1206 1.40.10.2 rumble struct denode *dep; 1207 1.40.10.2 rumble struct denode *pdep = VTODE(ap->a_dvp); 1208 1.40.10.2 rumble int error; 1209 1.40.10.2 rumble int bn; 1210 1.40.10.2 rumble u_long newcluster, pcl; 1211 1.40.10.2 rumble struct direntry *denp; 1212 1.40.10.2 rumble struct msdosfsmount *pmp = pdep->de_pmp; 1213 1.40.10.2 rumble struct buf *bp; 1214 1.40.10.2 rumble int async = pdep->de_pmp->pm_mountp->mnt_flag & MNT_ASYNC; 1215 1.40.10.2 rumble 1216 1.40.10.2 rumble /* 1217 1.40.10.2 rumble * If this is the root directory and there is no space left we 1218 1.40.10.2 rumble * can't do anything. This is because the root directory can not 1219 1.40.10.2 rumble * change size. 1220 1.40.10.2 rumble */ 1221 1.40.10.2 rumble if (pdep->de_StartCluster == MSDOSFSROOT 1222 1.40.10.2 rumble && pdep->de_fndoffset >= pdep->de_FileSize) { 1223 1.40.10.2 rumble error = ENOSPC; 1224 1.40.10.2 rumble goto bad2; 1225 1.40.10.2 rumble } 1226 1.40.10.2 rumble 1227 1.40.10.2 rumble /* 1228 1.40.10.2 rumble * Allocate a cluster to hold the about to be created directory. 1229 1.40.10.2 rumble */ 1230 1.40.10.2 rumble error = clusteralloc(pmp, 0, 1, &newcluster, NULL); 1231 1.40.10.2 rumble if (error) 1232 1.40.10.2 rumble goto bad2; 1233 1.40.10.2 rumble 1234 1.40.10.2 rumble memset(&ndirent, 0, sizeof(ndirent)); 1235 1.40.10.2 rumble ndirent.de_pmp = pmp; 1236 1.40.10.2 rumble ndirent.de_flag = DE_ACCESS | DE_CREATE | DE_UPDATE; 1237 1.40.10.2 rumble DETIMES(&ndirent, NULL, NULL, NULL, pmp->pm_gmtoff); 1238 1.40.10.2 rumble 1239 1.40.10.2 rumble /* 1240 1.40.10.2 rumble * Now fill the cluster with the "." and ".." entries. And write 1241 1.40.10.2 rumble * the cluster to disk. This way it is there for the parent 1242 1.40.10.2 rumble * directory to be pointing at if there were a crash. 1243 1.40.10.2 rumble */ 1244 1.40.10.2 rumble bn = cntobn(pmp, newcluster); 1245 1.40.10.2 rumble /* always succeeds */ 1246 1.40.10.2 rumble bp = getblk(pmp->pm_devvp, de_bn2kb(pmp, bn), pmp->pm_bpcluster, 0, 0); 1247 1.40.10.2 rumble memset(bp->b_data, 0, pmp->pm_bpcluster); 1248 1.40.10.2 rumble memcpy(bp->b_data, &dosdirtemplate, sizeof dosdirtemplate); 1249 1.40.10.2 rumble denp = (struct direntry *)bp->b_data; 1250 1.40.10.2 rumble putushort(denp[0].deStartCluster, newcluster); 1251 1.40.10.2 rumble putushort(denp[0].deCDate, ndirent.de_CDate); 1252 1.40.10.2 rumble putushort(denp[0].deCTime, ndirent.de_CTime); 1253 1.40.10.2 rumble denp[0].deCHundredth = ndirent.de_CHun; 1254 1.40.10.2 rumble putushort(denp[0].deADate, ndirent.de_ADate); 1255 1.40.10.2 rumble putushort(denp[0].deMDate, ndirent.de_MDate); 1256 1.40.10.2 rumble putushort(denp[0].deMTime, ndirent.de_MTime); 1257 1.40.10.2 rumble pcl = pdep->de_StartCluster; 1258 1.40.10.2 rumble if (FAT32(pmp) && pcl == pmp->pm_rootdirblk) 1259 1.40.10.2 rumble pcl = 0; 1260 1.40.10.2 rumble putushort(denp[1].deStartCluster, pcl); 1261 1.40.10.2 rumble putushort(denp[1].deCDate, ndirent.de_CDate); 1262 1.40.10.2 rumble putushort(denp[1].deCTime, ndirent.de_CTime); 1263 1.40.10.2 rumble denp[1].deCHundredth = ndirent.de_CHun; 1264 1.40.10.2 rumble putushort(denp[1].deADate, ndirent.de_ADate); 1265 1.40.10.2 rumble putushort(denp[1].deMDate, ndirent.de_MDate); 1266 1.40.10.2 rumble putushort(denp[1].deMTime, ndirent.de_MTime); 1267 1.40.10.2 rumble if (FAT32(pmp)) { 1268 1.40.10.2 rumble putushort(denp[0].deHighClust, newcluster >> 16); 1269 1.40.10.2 rumble putushort(denp[1].deHighClust, pdep->de_StartCluster >> 16); 1270 1.40.10.2 rumble } else { 1271 1.40.10.2 rumble putushort(denp[0].deHighClust, 0); 1272 1.40.10.2 rumble putushort(denp[1].deHighClust, 0); 1273 1.40.10.2 rumble } 1274 1.40.10.2 rumble 1275 1.40.10.2 rumble if (async) 1276 1.40.10.2 rumble bdwrite(bp); 1277 1.40.10.2 rumble else if ((error = bwrite(bp)) != 0) 1278 1.40.10.2 rumble goto bad; 1279 1.40.10.2 rumble 1280 1.40.10.2 rumble /* 1281 1.40.10.2 rumble * Now build up a directory entry pointing to the newly allocated 1282 1.40.10.2 rumble * cluster. This will be written to an empty slot in the parent 1283 1.40.10.2 rumble * directory. 1284 1.40.10.2 rumble */ 1285 1.40.10.2 rumble #ifdef DIAGNOSTIC 1286 1.40.10.2 rumble if ((cnp->cn_flags & HASBUF) == 0) 1287 1.40.10.2 rumble panic("msdosfs_mkdir: no name"); 1288 1.40.10.2 rumble #endif 1289 1.40.10.2 rumble if ((error = uniqdosname(pdep, cnp, ndirent.de_Name)) != 0) 1290 1.40.10.2 rumble goto bad; 1291 1.40.10.2 rumble 1292 1.40.10.2 rumble ndirent.de_Attributes = ATTR_DIRECTORY; 1293 1.40.10.2 rumble ndirent.de_StartCluster = newcluster; 1294 1.40.10.2 rumble ndirent.de_FileSize = 0; 1295 1.40.10.2 rumble ndirent.de_dev = pdep->de_dev; 1296 1.40.10.2 rumble ndirent.de_devvp = pdep->de_devvp; 1297 1.40.10.2 rumble if ((error = createde(&ndirent, pdep, &dep, cnp)) != 0) 1298 1.40.10.2 rumble goto bad; 1299 1.40.10.2 rumble if ((cnp->cn_flags & SAVESTART) == 0) 1300 1.40.10.2 rumble PNBUF_PUT(cnp->cn_pnbuf); 1301 1.40.10.2 rumble VN_KNOTE(ap->a_dvp, NOTE_WRITE | NOTE_LINK); 1302 1.40.10.2 rumble vput(ap->a_dvp); 1303 1.40.10.2 rumble *ap->a_vpp = DETOV(dep); 1304 1.40.10.2 rumble return (0); 1305 1.40.10.2 rumble 1306 1.40.10.2 rumble bad: 1307 1.40.10.2 rumble clusterfree(pmp, newcluster, NULL); 1308 1.40.10.2 rumble bad2: 1309 1.40.10.2 rumble PNBUF_PUT(cnp->cn_pnbuf); 1310 1.40.10.2 rumble vput(ap->a_dvp); 1311 1.40.10.2 rumble return (error); 1312 1.40.10.2 rumble } 1313 1.40.10.2 rumble 1314 1.40.10.2 rumble int 1315 1.40.10.2 rumble msdosfs_rmdir(v) 1316 1.40.10.2 rumble void *v; 1317 1.40.10.2 rumble { 1318 1.40.10.2 rumble struct vop_rmdir_args /* { 1319 1.40.10.2 rumble struct vnode *a_dvp; 1320 1.40.10.2 rumble struct vnode *a_vp; 1321 1.40.10.2 rumble struct componentname *a_cnp; 1322 1.40.10.2 rumble } */ *ap = v; 1323 1.40.10.2 rumble struct vnode *vp = ap->a_vp; 1324 1.40.10.2 rumble struct vnode *dvp = ap->a_dvp; 1325 1.40.10.2 rumble struct componentname *cnp = ap->a_cnp; 1326 1.40.10.2 rumble struct denode *ip, *dp; 1327 1.40.10.2 rumble int error; 1328 1.40.10.2 rumble 1329 1.40.10.2 rumble ip = VTODE(vp); 1330 1.40.10.2 rumble dp = VTODE(dvp); 1331 1.40.10.2 rumble /* 1332 1.40.10.2 rumble * No rmdir "." please. 1333 1.40.10.2 rumble */ 1334 1.40.10.2 rumble if (dp == ip) { 1335 1.40.10.2 rumble vrele(dvp); 1336 1.40.10.2 rumble vput(vp); 1337 1.40.10.2 rumble return (EINVAL); 1338 1.40.10.2 rumble } 1339 1.40.10.2 rumble /* 1340 1.40.10.2 rumble * Verify the directory is empty (and valid). 1341 1.40.10.2 rumble * (Rmdir ".." won't be valid since 1342 1.40.10.2 rumble * ".." will contain a reference to 1343 1.40.10.2 rumble * the current directory and thus be 1344 1.40.10.2 rumble * non-empty.) 1345 1.40.10.2 rumble */ 1346 1.40.10.2 rumble error = 0; 1347 1.40.10.2 rumble if (!dosdirempty(ip) || ip->de_flag & DE_RENAME) { 1348 1.40.10.2 rumble error = ENOTEMPTY; 1349 1.40.10.2 rumble goto out; 1350 1.40.10.2 rumble } 1351 1.40.10.2 rumble /* 1352 1.40.10.2 rumble * Delete the entry from the directory. For dos filesystems this 1353 1.40.10.2 rumble * gets rid of the directory entry on disk, the in memory copy 1354 1.40.10.2 rumble * still exists but the de_refcnt is <= 0. This prevents it from 1355 1.40.10.2 rumble * being found by deget(). When the vput() on dep is done we give 1356 1.40.10.2 rumble * up access and eventually msdosfs_reclaim() will be called which 1357 1.40.10.2 rumble * will remove it from the denode cache. 1358 1.40.10.2 rumble */ 1359 1.40.10.2 rumble if ((error = removede(dp, ip)) != 0) 1360 1.40.10.2 rumble goto out; 1361 1.40.10.2 rumble /* 1362 1.40.10.2 rumble * This is where we decrement the link count in the parent 1363 1.40.10.2 rumble * directory. Since dos filesystems don't do this we just purge 1364 1.40.10.2 rumble * the name cache and let go of the parent directory denode. 1365 1.40.10.2 rumble */ 1366 1.40.10.2 rumble VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); 1367 1.40.10.2 rumble cache_purge(dvp); 1368 1.40.10.2 rumble vput(dvp); 1369 1.40.10.2 rumble dvp = NULL; 1370 1.40.10.2 rumble /* 1371 1.40.10.2 rumble * Truncate the directory that is being deleted. 1372 1.40.10.2 rumble */ 1373 1.40.10.2 rumble error = detrunc(ip, (u_long)0, IO_SYNC, cnp->cn_cred, cnp->cn_lwp); 1374 1.40.10.2 rumble cache_purge(vp); 1375 1.40.10.2 rumble out: 1376 1.40.10.2 rumble VN_KNOTE(vp, NOTE_DELETE); 1377 1.40.10.2 rumble if (dvp) 1378 1.40.10.2 rumble vput(dvp); 1379 1.40.10.2 rumble vput(vp); 1380 1.40.10.2 rumble return (error); 1381 1.40.10.2 rumble } 1382 1.40.10.2 rumble 1383 1.40.10.2 rumble /* 1384 1.40.10.2 rumble * DOS filesystems don't know what symlinks are. 1385 1.40.10.2 rumble */ 1386 1.40.10.2 rumble int 1387 1.40.10.2 rumble msdosfs_symlink(v) 1388 1.40.10.2 rumble void *v; 1389 1.40.10.2 rumble { 1390 1.40.10.2 rumble struct vop_symlink_args /* { 1391 1.40.10.2 rumble struct vnode *a_dvp; 1392 1.40.10.2 rumble struct vnode **a_vpp; 1393 1.40.10.2 rumble struct componentname *a_cnp; 1394 1.40.10.2 rumble struct vattr *a_vap; 1395 1.40.10.2 rumble char *a_target; 1396 1.40.10.2 rumble } */ *ap = v; 1397 1.40.10.2 rumble 1398 1.40.10.2 rumble VOP_ABORTOP(ap->a_dvp, ap->a_cnp); 1399 1.40.10.2 rumble vput(ap->a_dvp); 1400 1.40.10.2 rumble return (EOPNOTSUPP); 1401 1.40.10.2 rumble } 1402 1.40.10.2 rumble 1403 1.40.10.2 rumble int 1404 1.40.10.2 rumble msdosfs_readdir(v) 1405 1.40.10.2 rumble void *v; 1406 1.40.10.2 rumble { 1407 1.40.10.2 rumble struct vop_readdir_args /* { 1408 1.40.10.2 rumble struct vnode *a_vp; 1409 1.40.10.2 rumble struct uio *a_uio; 1410 1.40.10.2 rumble kauth_cred_t a_cred; 1411 1.40.10.2 rumble int *a_eofflag; 1412 1.40.10.2 rumble off_t **a_cookies; 1413 1.40.10.2 rumble int *a_ncookies; 1414 1.40.10.2 rumble } */ *ap = v; 1415 1.40.10.2 rumble int error = 0; 1416 1.40.10.2 rumble int diff; 1417 1.40.10.2 rumble long n; 1418 1.40.10.2 rumble int blsize; 1419 1.40.10.2 rumble long on; 1420 1.40.10.2 rumble long lost; 1421 1.40.10.2 rumble long count; 1422 1.40.10.2 rumble u_long cn; 1423 1.40.10.2 rumble ino_t fileno; 1424 1.40.10.2 rumble u_long dirsperblk; 1425 1.40.10.2 rumble long bias = 0; 1426 1.40.10.2 rumble daddr_t bn, lbn; 1427 1.40.10.2 rumble struct buf *bp; 1428 1.40.10.2 rumble struct denode *dep = VTODE(ap->a_vp); 1429 1.40.10.2 rumble struct msdosfsmount *pmp = dep->de_pmp; 1430 1.40.10.2 rumble struct direntry *dentp; 1431 1.40.10.2 rumble struct dirent dirbuf; 1432 1.40.10.2 rumble struct uio *uio = ap->a_uio; 1433 1.40.10.2 rumble off_t *cookies = NULL; 1434 1.40.10.2 rumble int ncookies = 0, nc = 0; 1435 1.40.10.2 rumble off_t offset, uio_off; 1436 1.40.10.2 rumble int chksum = -1; 1437 1.40.10.2 rumble 1438 1.40.10.2 rumble #ifdef MSDOSFS_DEBUG 1439 1.40.10.2 rumble printf("msdosfs_readdir(): vp %p, uio %p, cred %p, eofflagp %p\n", 1440 1.40.10.2 rumble ap->a_vp, uio, ap->a_cred, ap->a_eofflag); 1441 1.40.10.2 rumble #endif 1442 1.40.10.2 rumble 1443 1.40.10.2 rumble /* 1444 1.40.10.2 rumble * msdosfs_readdir() won't operate properly on regular files since 1445 1.40.10.2 rumble * it does i/o only with the filesystem vnode, and hence can 1446 1.40.10.2 rumble * retrieve the wrong block from the buffer cache for a plain file. 1447 1.40.10.2 rumble * So, fail attempts to readdir() on a plain file. 1448 1.40.10.2 rumble */ 1449 1.40.10.2 rumble if ((dep->de_Attributes & ATTR_DIRECTORY) == 0) 1450 1.40.10.2 rumble return (ENOTDIR); 1451 1.40.10.2 rumble 1452 1.40.10.2 rumble /* 1453 1.40.10.2 rumble * To be safe, initialize dirbuf 1454 1.40.10.2 rumble */ 1455 1.40.10.2 rumble memset(dirbuf.d_name, 0, sizeof(dirbuf.d_name)); 1456 1.40.10.2 rumble 1457 1.40.10.2 rumble /* 1458 1.40.10.2 rumble * If the user buffer is smaller than the size of one dos directory 1459 1.40.10.2 rumble * entry or the file offset is not a multiple of the size of a 1460 1.40.10.2 rumble * directory entry, then we fail the read. 1461 1.40.10.2 rumble */ 1462 1.40.10.2 rumble count = uio->uio_resid & ~(sizeof(struct direntry) - 1); 1463 1.40.10.2 rumble offset = uio->uio_offset; 1464 1.40.10.2 rumble if (count < sizeof(struct direntry) || 1465 1.40.10.2 rumble (offset & (sizeof(struct direntry) - 1))) 1466 1.40.10.2 rumble return (EINVAL); 1467 1.40.10.2 rumble lost = uio->uio_resid - count; 1468 1.40.10.2 rumble uio->uio_resid = count; 1469 1.40.10.2 rumble uio_off = uio->uio_offset; 1470 1.40.10.2 rumble 1471 1.40.10.2 rumble if (ap->a_ncookies) { 1472 1.40.10.2 rumble nc = uio->uio_resid / _DIRENT_MINSIZE((struct dirent *)0); 1473 1.40.10.2 rumble cookies = malloc(nc * sizeof (off_t), M_TEMP, M_WAITOK); 1474 1.40.10.2 rumble *ap->a_cookies = cookies; 1475 1.40.10.2 rumble } 1476 1.40.10.2 rumble 1477 1.40.10.2 rumble dirsperblk = pmp->pm_BytesPerSec / sizeof(struct direntry); 1478 1.40.10.2 rumble 1479 1.40.10.2 rumble /* 1480 1.40.10.2 rumble * If they are reading from the root directory then, we simulate 1481 1.40.10.2 rumble * the . and .. entries since these don't exist in the root 1482 1.40.10.2 rumble * directory. We also set the offset bias to make up for having to 1483 1.40.10.2 rumble * simulate these entries. By this I mean that at file offset 64 we 1484 1.40.10.2 rumble * read the first entry in the root directory that lives on disk. 1485 1.40.10.2 rumble */ 1486 1.40.10.2 rumble if (dep->de_StartCluster == MSDOSFSROOT 1487 1.40.10.2 rumble || (FAT32(pmp) && dep->de_StartCluster == pmp->pm_rootdirblk)) { 1488 1.40.10.2 rumble #if 0 1489 1.40.10.2 rumble printf("msdosfs_readdir(): going after . or .. in root dir, " 1490 1.40.10.2 rumble "offset %" PRIu64 "\n", offset); 1491 1.40.10.2 rumble #endif 1492 1.40.10.2 rumble bias = 2 * sizeof(struct direntry); 1493 1.40.10.2 rumble if (offset < bias) { 1494 1.40.10.2 rumble for (n = (int)offset / sizeof(struct direntry); 1495 1.40.10.2 rumble n < 2; n++) { 1496 1.40.10.2 rumble if (FAT32(pmp)) 1497 1.40.10.2 rumble dirbuf.d_fileno = cntobn(pmp, 1498 1.40.10.2 rumble (ino_t)pmp->pm_rootdirblk) 1499 1.40.10.2 rumble * dirsperblk; 1500 1.40.10.2 rumble else 1501 1.40.10.2 rumble dirbuf.d_fileno = 1; 1502 1.40.10.2 rumble dirbuf.d_type = DT_DIR; 1503 1.40.10.2 rumble switch (n) { 1504 1.40.10.2 rumble case 0: 1505 1.40.10.2 rumble dirbuf.d_namlen = 1; 1506 1.40.10.2 rumble strlcpy(dirbuf.d_name, ".", 1507 1.40.10.2 rumble sizeof(dirbuf.d_name)); 1508 1.40.10.2 rumble break; 1509 1.40.10.2 rumble case 1: 1510 1.40.10.2 rumble dirbuf.d_namlen = 2; 1511 1.40.10.2 rumble strlcpy(dirbuf.d_name, "..", 1512 1.40.10.2 rumble sizeof(dirbuf.d_name)); 1513 1.40.10.2 rumble break; 1514 1.40.10.2 rumble } 1515 1.40.10.2 rumble dirbuf.d_reclen = _DIRENT_SIZE(&dirbuf); 1516 1.40.10.2 rumble if (uio->uio_resid < dirbuf.d_reclen) 1517 1.40.10.2 rumble goto out; 1518 1.40.10.2 rumble error = uiomove(&dirbuf, 1519 1.40.10.2 rumble dirbuf.d_reclen, uio); 1520 1.40.10.2 rumble if (error) 1521 1.40.10.2 rumble goto out; 1522 1.40.10.2 rumble offset += sizeof(struct direntry); 1523 1.40.10.2 rumble uio_off = offset; 1524 1.40.10.2 rumble if (cookies) { 1525 1.40.10.2 rumble *cookies++ = offset; 1526 1.40.10.2 rumble ncookies++; 1527 1.40.10.2 rumble if (ncookies >= nc) 1528 1.40.10.2 rumble goto out; 1529 1.40.10.2 rumble } 1530 1.40.10.2 rumble } 1531 1.40.10.2 rumble } 1532 1.40.10.2 rumble } 1533 1.40.10.2 rumble 1534 1.40.10.2 rumble while (uio->uio_resid > 0) { 1535 1.40.10.2 rumble lbn = de_cluster(pmp, offset - bias); 1536 1.40.10.2 rumble on = (offset - bias) & pmp->pm_crbomask; 1537 1.40.10.2 rumble n = MIN(pmp->pm_bpcluster - on, uio->uio_resid); 1538 1.40.10.2 rumble diff = dep->de_FileSize - (offset - bias); 1539 1.40.10.2 rumble if (diff <= 0) 1540 1.40.10.2 rumble break; 1541 1.40.10.2 rumble n = MIN(n, diff); 1542 1.40.10.2 rumble if ((error = pcbmap(dep, lbn, &bn, &cn, &blsize)) != 0) 1543 1.40.10.2 rumble break; 1544 1.40.10.2 rumble error = bread(pmp->pm_devvp, de_bn2kb(pmp, bn), blsize, 1545 1.40.10.2 rumble NOCRED, &bp); 1546 1.40.10.2 rumble if (error) { 1547 1.40.10.2 rumble brelse(bp); 1548 1.40.10.2 rumble return (error); 1549 1.40.10.2 rumble } 1550 1.40.10.2 rumble n = MIN(n, blsize - bp->b_resid); 1551 1.40.10.2 rumble 1552 1.40.10.2 rumble /* 1553 1.40.10.2 rumble * Convert from dos directory entries to fs-independent 1554 1.40.10.2 rumble * directory entries. 1555 1.40.10.2 rumble */ 1556 1.40.10.2 rumble for (dentp = (struct direntry *)((char *)bp->b_data + on); 1557 1.40.10.2 rumble (char *)dentp < (char *)bp->b_data + on + n; 1558 1.40.10.2 rumble dentp++, offset += sizeof(struct direntry)) { 1559 1.40.10.2 rumble #if 0 1560 1.40.10.2 rumble 1561 1.40.10.2 rumble printf("rd: dentp %08x prev %08x crnt %08x deName %02x attr %02x\n", 1562 1.40.10.2 rumble dentp, prev, crnt, dentp->deName[0], dentp->deAttributes); 1563 1.40.10.2 rumble #endif 1564 1.40.10.2 rumble /* 1565 1.40.10.2 rumble * If this is an unused entry, we can stop. 1566 1.40.10.2 rumble */ 1567 1.40.10.2 rumble if (dentp->deName[0] == SLOT_EMPTY) { 1568 1.40.10.2 rumble brelse(bp); 1569 1.40.10.2 rumble goto out; 1570 1.40.10.2 rumble } 1571 1.40.10.2 rumble /* 1572 1.40.10.2 rumble * Skip deleted entries. 1573 1.40.10.2 rumble */ 1574 1.40.10.2 rumble if (dentp->deName[0] == SLOT_DELETED) { 1575 1.40.10.2 rumble chksum = -1; 1576 1.40.10.2 rumble continue; 1577 1.40.10.2 rumble } 1578 1.40.10.2 rumble 1579 1.40.10.2 rumble /* 1580 1.40.10.2 rumble * Handle Win95 long directory entries 1581 1.40.10.2 rumble */ 1582 1.40.10.2 rumble if (dentp->deAttributes == ATTR_WIN95) { 1583 1.40.10.2 rumble if (pmp->pm_flags & MSDOSFSMNT_SHORTNAME) 1584 1.40.10.2 rumble continue; 1585 1.40.10.2 rumble chksum = win2unixfn((struct winentry *)dentp, &dirbuf, chksum); 1586 1.40.10.2 rumble continue; 1587 1.40.10.2 rumble } 1588 1.40.10.2 rumble 1589 1.40.10.2 rumble /* 1590 1.40.10.2 rumble * Skip volume labels 1591 1.40.10.2 rumble */ 1592 1.40.10.2 rumble if (dentp->deAttributes & ATTR_VOLUME) { 1593 1.40.10.2 rumble chksum = -1; 1594 1.40.10.2 rumble continue; 1595 1.40.10.2 rumble } 1596 1.40.10.2 rumble /* 1597 1.40.10.2 rumble * This computation of d_fileno must match 1598 1.40.10.2 rumble * the computation of va_fileid in 1599 1.40.10.2 rumble * msdosfs_getattr. 1600 1.40.10.2 rumble */ 1601 1.40.10.2 rumble if (dentp->deAttributes & ATTR_DIRECTORY) { 1602 1.40.10.2 rumble fileno = getushort(dentp->deStartCluster); 1603 1.40.10.2 rumble if (FAT32(pmp)) 1604 1.40.10.2 rumble fileno |= ((ino_t)getushort(dentp->deHighClust)) << 16; 1605 1.40.10.2 rumble /* if this is the root directory */ 1606 1.40.10.2 rumble if (fileno == MSDOSFSROOT) 1607 1.40.10.2 rumble if (FAT32(pmp)) 1608 1.40.10.2 rumble fileno = cntobn(pmp, 1609 1.40.10.2 rumble (ino_t)pmp->pm_rootdirblk) 1610 1.40.10.2 rumble * dirsperblk; 1611 1.40.10.2 rumble else 1612 1.40.10.2 rumble fileno = 1; 1613 1.40.10.2 rumble else 1614 1.40.10.2 rumble fileno = cntobn(pmp, fileno) * dirsperblk; 1615 1.40.10.2 rumble dirbuf.d_fileno = fileno; 1616 1.40.10.2 rumble dirbuf.d_type = DT_DIR; 1617 1.40.10.2 rumble } else { 1618 1.40.10.2 rumble dirbuf.d_fileno = offset / sizeof(struct direntry); 1619 1.40.10.2 rumble dirbuf.d_type = DT_REG; 1620 1.40.10.2 rumble } 1621 1.40.10.2 rumble if (chksum != winChksum(dentp->deName)) 1622 1.40.10.2 rumble dirbuf.d_namlen = dos2unixfn(dentp->deName, 1623 1.40.10.2 rumble (u_char *)dirbuf.d_name, 1624 1.40.10.2 rumble pmp->pm_flags & MSDOSFSMNT_SHORTNAME); 1625 1.40.10.2 rumble else 1626 1.40.10.2 rumble dirbuf.d_name[dirbuf.d_namlen] = 0; 1627 1.40.10.2 rumble chksum = -1; 1628 1.40.10.2 rumble dirbuf.d_reclen = _DIRENT_SIZE(&dirbuf); 1629 1.40.10.2 rumble if (uio->uio_resid < dirbuf.d_reclen) { 1630 1.40.10.2 rumble brelse(bp); 1631 1.40.10.2 rumble goto out; 1632 1.40.10.2 rumble } 1633 1.40.10.2 rumble error = uiomove(&dirbuf, 1634 1.40.10.2 rumble dirbuf.d_reclen, uio); 1635 1.40.10.2 rumble if (error) { 1636 1.40.10.2 rumble brelse(bp); 1637 1.40.10.2 rumble goto out; 1638 1.40.10.2 rumble } 1639 1.40.10.2 rumble uio_off = offset + sizeof(struct direntry); 1640 1.40.10.2 rumble if (cookies) { 1641 1.40.10.2 rumble *cookies++ = offset + sizeof(struct direntry); 1642 1.40.10.2 rumble ncookies++; 1643 1.40.10.2 rumble if (ncookies >= nc) { 1644 1.40.10.2 rumble brelse(bp); 1645 1.40.10.2 rumble goto out; 1646 1.40.10.2 rumble } 1647 1.40.10.2 rumble } 1648 1.40.10.2 rumble } 1649 1.40.10.2 rumble brelse(bp); 1650 1.40.10.2 rumble } 1651 1.40.10.2 rumble 1652 1.40.10.2 rumble out: 1653 1.40.10.2 rumble uio->uio_offset = uio_off; 1654 1.40.10.2 rumble uio->uio_resid += lost; 1655 1.40.10.2 rumble if (dep->de_FileSize - (offset - bias) <= 0) 1656 1.40.10.2 rumble *ap->a_eofflag = 1; 1657 1.40.10.2 rumble else 1658 1.40.10.2 rumble *ap->a_eofflag = 0; 1659 1.40.10.2 rumble 1660 1.40.10.2 rumble if (ap->a_ncookies) { 1661 1.40.10.2 rumble if (error) { 1662 1.40.10.2 rumble free(*ap->a_cookies, M_TEMP); 1663 1.40.10.2 rumble *ap->a_ncookies = 0; 1664 1.40.10.2 rumble *ap->a_cookies = NULL; 1665 1.40.10.2 rumble } else 1666 1.40.10.2 rumble *ap->a_ncookies = ncookies; 1667 1.40.10.2 rumble } 1668 1.40.10.2 rumble return (error); 1669 1.40.10.2 rumble } 1670 1.40.10.2 rumble 1671 1.40.10.2 rumble /* 1672 1.40.10.2 rumble * DOS filesystems don't know what symlinks are. 1673 1.40.10.2 rumble */ 1674 1.40.10.2 rumble int 1675 1.40.10.2 rumble msdosfs_readlink(void *v) 1676 1.40.10.2 rumble { 1677 1.40.10.2 rumble #if 0 1678 1.40.10.2 rumble struct vop_readlink_args /* { 1679 1.40.10.2 rumble struct vnode *a_vp; 1680 1.40.10.2 rumble struct uio *a_uio; 1681 1.40.10.2 rumble kauth_cred_t a_cred; 1682 1.40.10.2 rumble } */ *ap; 1683 1.40.10.2 rumble #endif 1684 1.40.10.2 rumble 1685 1.40.10.2 rumble return (EINVAL); 1686 1.40.10.2 rumble } 1687 1.40.10.2 rumble 1688 1.40.10.2 rumble /* 1689 1.40.10.2 rumble * vp - address of vnode file the file 1690 1.40.10.2 rumble * bn - which cluster we are interested in mapping to a filesystem block number. 1691 1.40.10.2 rumble * vpp - returns the vnode for the block special file holding the filesystem 1692 1.40.10.2 rumble * containing the file of interest 1693 1.40.10.2 rumble * bnp - address of where to return the filesystem relative block number 1694 1.40.10.2 rumble */ 1695 1.40.10.2 rumble int 1696 1.40.10.2 rumble msdosfs_bmap(v) 1697 1.40.10.2 rumble void *v; 1698 1.40.10.2 rumble { 1699 1.40.10.2 rumble struct vop_bmap_args /* { 1700 1.40.10.2 rumble struct vnode *a_vp; 1701 1.40.10.2 rumble daddr_t a_bn; 1702 1.40.10.2 rumble struct vnode **a_vpp; 1703 1.40.10.2 rumble daddr_t *a_bnp; 1704 1.40.10.2 rumble int *a_runp; 1705 1.40.10.2 rumble } */ *ap = v; 1706 1.40.10.2 rumble struct denode *dep = VTODE(ap->a_vp); 1707 1.40.10.2 rumble int status; 1708 1.40.10.2 rumble 1709 1.40.10.2 rumble if (ap->a_vpp != NULL) 1710 1.40.10.2 rumble *ap->a_vpp = dep->de_devvp; 1711 1.40.10.2 rumble if (ap->a_bnp == NULL) 1712 1.40.10.2 rumble return (0); 1713 1.40.10.2 rumble if (ap->a_runp) { 1714 1.40.10.2 rumble /* 1715 1.40.10.2 rumble * Sequential clusters should be counted here. 1716 1.40.10.2 rumble */ 1717 1.40.10.2 rumble *ap->a_runp = 0; 1718 1.40.10.2 rumble } 1719 1.40.10.2 rumble status = pcbmap(dep, ap->a_bn, ap->a_bnp, 0, 0); 1720 1.40.10.2 rumble /* 1721 1.40.10.2 rumble * We need to scale *ap->a_bnp by sector_size/DEV_BSIZE 1722 1.40.10.2 rumble */ 1723 1.40.10.2 rumble *ap->a_bnp = de_bn2kb(dep->de_pmp, *ap->a_bnp); 1724 1.40.10.2 rumble return status; 1725 1.40.10.2 rumble } 1726 1.40.10.2 rumble 1727 1.40.10.2 rumble int 1728 1.40.10.2 rumble msdosfs_strategy(v) 1729 1.40.10.2 rumble void *v; 1730 1.40.10.2 rumble { 1731 1.40.10.2 rumble struct vop_strategy_args /* { 1732 1.40.10.2 rumble struct vnode *a_vp; 1733 1.40.10.2 rumble struct buf *a_bp; 1734 1.40.10.2 rumble } */ *ap = v; 1735 1.40.10.2 rumble struct vnode *vp = ap->a_vp; 1736 1.40.10.2 rumble struct buf *bp = ap->a_bp; 1737 1.40.10.2 rumble struct denode *dep = VTODE(bp->b_vp); 1738 1.40.10.2 rumble int error = 0; 1739 1.40.10.2 rumble 1740 1.40.10.2 rumble if (vp->v_type == VBLK || vp->v_type == VCHR) 1741 1.40.10.2 rumble panic("msdosfs_strategy: spec"); 1742 1.40.10.2 rumble /* 1743 1.40.10.2 rumble * If we don't already know the filesystem relative block number 1744 1.40.10.2 rumble * then get it using pcbmap(). If pcbmap() returns the block 1745 1.40.10.2 rumble * number as -1 then we've got a hole in the file. DOS filesystems 1746 1.40.10.2 rumble * don't allow files with holes, so we shouldn't ever see this. 1747 1.40.10.2 rumble */ 1748 1.40.10.2 rumble if (bp->b_blkno == bp->b_lblkno) { 1749 1.40.10.2 rumble error = pcbmap(dep, de_bn2cn(dep->de_pmp, bp->b_lblkno), 1750 1.40.10.2 rumble &bp->b_blkno, 0, 0); 1751 1.40.10.2 rumble if (error) 1752 1.40.10.2 rumble bp->b_blkno = -1; 1753 1.40.10.2 rumble if (bp->b_blkno == -1) 1754 1.40.10.2 rumble clrbuf(bp); 1755 1.40.10.2 rumble else 1756 1.40.10.2 rumble bp->b_blkno = de_bn2kb(dep->de_pmp, bp->b_blkno); 1757 1.40.10.2 rumble } 1758 1.40.10.2 rumble if (bp->b_blkno == -1) { 1759 1.40.10.2 rumble biodone(bp); 1760 1.40.10.2 rumble return (error); 1761 1.40.10.2 rumble } 1762 1.40.10.2 rumble 1763 1.40.10.2 rumble /* 1764 1.40.10.2 rumble * Read/write the block from/to the disk that contains the desired 1765 1.40.10.2 rumble * file block. 1766 1.40.10.2 rumble */ 1767 1.40.10.2 rumble 1768 1.40.10.2 rumble vp = dep->de_devvp; 1769 1.40.10.2 rumble return (VOP_STRATEGY(vp, bp)); 1770 1.40.10.2 rumble } 1771 1.40.10.2 rumble 1772 1.40.10.2 rumble int 1773 1.40.10.2 rumble msdosfs_print(v) 1774 1.40.10.2 rumble void *v; 1775 1.40.10.2 rumble { 1776 1.40.10.2 rumble struct vop_print_args /* { 1777 1.40.10.2 rumble struct vnode *vp; 1778 1.40.10.2 rumble } */ *ap = v; 1779 1.40.10.2 rumble struct denode *dep = VTODE(ap->a_vp); 1780 1.40.10.2 rumble 1781 1.40.10.2 rumble printf( 1782 1.40.10.2 rumble "tag VT_MSDOSFS, startcluster %ld, dircluster %ld, diroffset %ld ", 1783 1.40.10.2 rumble dep->de_StartCluster, dep->de_dirclust, dep->de_diroffset); 1784 1.40.10.2 rumble printf(" dev %d, %d ", major(dep->de_dev), minor(dep->de_dev)); 1785 1.40.10.2 rumble lockmgr_printinfo(&ap->a_vp->v_lock); 1786 1.40.10.2 rumble printf("\n"); 1787 1.40.10.2 rumble return (0); 1788 1.40.10.2 rumble } 1789 1.40.10.2 rumble 1790 1.40.10.2 rumble int 1791 1.40.10.2 rumble msdosfs_advlock(v) 1792 1.40.10.2 rumble void *v; 1793 1.40.10.2 rumble { 1794 1.40.10.2 rumble struct vop_advlock_args /* { 1795 1.40.10.2 rumble struct vnode *a_vp; 1796 1.40.10.2 rumble void *a_id; 1797 1.40.10.2 rumble int a_op; 1798 1.40.10.2 rumble struct flock *a_fl; 1799 1.40.10.2 rumble int a_flags; 1800 1.40.10.2 rumble } */ *ap = v; 1801 1.40.10.2 rumble struct denode *dep = VTODE(ap->a_vp); 1802 1.40.10.2 rumble 1803 1.40.10.2 rumble return lf_advlock(ap, &dep->de_lockf, dep->de_FileSize); 1804 1.40.10.2 rumble } 1805 1.40.10.2 rumble 1806 1.40.10.2 rumble int 1807 1.40.10.2 rumble msdosfs_pathconf(v) 1808 1.40.10.2 rumble void *v; 1809 1.40.10.2 rumble { 1810 1.40.10.2 rumble struct vop_pathconf_args /* { 1811 1.40.10.2 rumble struct vnode *a_vp; 1812 1.40.10.2 rumble int a_name; 1813 1.40.10.2 rumble register_t *a_retval; 1814 1.40.10.2 rumble } */ *ap = v; 1815 1.40.10.2 rumble 1816 1.40.10.2 rumble switch (ap->a_name) { 1817 1.40.10.2 rumble case _PC_LINK_MAX: 1818 1.40.10.2 rumble *ap->a_retval = 1; 1819 1.40.10.2 rumble return (0); 1820 1.40.10.2 rumble case _PC_NAME_MAX: 1821 1.40.10.2 rumble *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_namemax; 1822 1.40.10.2 rumble return (0); 1823 1.40.10.2 rumble case _PC_PATH_MAX: 1824 1.40.10.2 rumble *ap->a_retval = PATH_MAX; 1825 1.40.10.2 rumble return (0); 1826 1.40.10.2 rumble case _PC_CHOWN_RESTRICTED: 1827 1.40.10.2 rumble *ap->a_retval = 1; 1828 1.40.10.2 rumble return (0); 1829 1.40.10.2 rumble case _PC_NO_TRUNC: 1830 1.40.10.2 rumble *ap->a_retval = 0; 1831 1.40.10.2 rumble return (0); 1832 1.40.10.2 rumble case _PC_SYNC_IO: 1833 1.40.10.2 rumble *ap->a_retval = 1; 1834 1.40.10.2 rumble return (0); 1835 1.40.10.2 rumble case _PC_FILESIZEBITS: 1836 1.40.10.2 rumble *ap->a_retval = 32; 1837 1.40.10.2 rumble return (0); 1838 1.40.10.2 rumble default: 1839 1.40.10.2 rumble return (EINVAL); 1840 1.40.10.2 rumble } 1841 1.40.10.2 rumble /* NOTREACHED */ 1842 1.40.10.2 rumble } 1843 1.40.10.2 rumble 1844 1.40.10.2 rumble int 1845 1.40.10.2 rumble msdosfs_fsync(v) 1846 1.40.10.2 rumble void *v; 1847 1.40.10.2 rumble { 1848 1.40.10.2 rumble struct vop_fsync_args /* { 1849 1.40.10.2 rumble struct vnode *a_vp; 1850 1.40.10.2 rumble kauth_cred_t a_cred; 1851 1.40.10.2 rumble int a_flags; 1852 1.40.10.2 rumble off_t offlo; 1853 1.40.10.2 rumble off_t offhi; 1854 1.40.10.2 rumble struct lwp *a_l; 1855 1.40.10.2 rumble } */ *ap = v; 1856 1.40.10.2 rumble struct vnode *vp = ap->a_vp; 1857 1.40.10.2 rumble int wait; 1858 1.40.10.2 rumble int error; 1859 1.40.10.2 rumble 1860 1.40.10.2 rumble wait = (ap->a_flags & FSYNC_WAIT) != 0; 1861 1.40.10.2 rumble vflushbuf(vp, wait); 1862 1.40.10.2 rumble if ((ap->a_flags & FSYNC_DATAONLY) != 0) 1863 1.40.10.2 rumble error = 0; 1864 1.40.10.2 rumble else 1865 1.40.10.2 rumble error = msdosfs_update(vp, NULL, NULL, wait ? UPDATE_WAIT : 0); 1866 1.40.10.2 rumble 1867 1.40.10.2 rumble if (error == 0 && ap->a_flags & FSYNC_CACHE) { 1868 1.40.10.2 rumble struct denode *dep = VTODE(vp); 1869 1.40.10.2 rumble struct vnode *devvp = dep->de_devvp; 1870 1.40.10.2 rumble 1871 1.40.10.2 rumble int l = 0; 1872 1.40.10.2 rumble error = VOP_IOCTL(devvp, DIOCCACHESYNC, &l, FWRITE, 1873 1.40.10.2 rumble ap->a_l->l_cred, ap->a_l); 1874 1.40.10.2 rumble } 1875 1.40.10.2 rumble 1876 1.40.10.2 rumble return (error); 1877 1.40.10.2 rumble } 1878 1.40.10.2 rumble 1879 1.40.10.2 rumble void 1880 1.40.10.2 rumble msdosfs_detimes(struct denode *dep, const struct timespec *acc, 1881 1.40.10.2 rumble const struct timespec *mod, const struct timespec *cre, int gmtoff) 1882 1.40.10.2 rumble { 1883 1.40.10.2 rumble struct timespec *ts = NULL, tsb; 1884 1.40.10.2 rumble 1885 1.40.10.2 rumble KASSERT(dep->de_flag & (DE_UPDATE | DE_CREATE | DE_ACCESS)); 1886 1.40.10.2 rumble /* XXX just call getnanotime early and use result if needed? */ 1887 1.40.10.2 rumble dep->de_flag |= DE_MODIFIED; 1888 1.40.10.2 rumble if (dep->de_flag & DE_UPDATE) { 1889 1.40.10.2 rumble if (mod == NULL) { 1890 1.40.10.2 rumble getnanotime(&tsb); 1891 1.40.10.2 rumble mod = ts = &tsb; 1892 1.40.10.2 rumble } 1893 1.40.10.2 rumble unix2dostime(mod, gmtoff, &dep->de_MDate, &dep->de_MTime, NULL); 1894 1.40.10.2 rumble dep->de_Attributes |= ATTR_ARCHIVE; 1895 1.40.10.2 rumble } 1896 1.40.10.2 rumble if ((dep->de_pmp->pm_flags & MSDOSFSMNT_NOWIN95) == 0) { 1897 1.40.10.2 rumble if (dep->de_flag & DE_ACCESS) { 1898 1.40.10.2 rumble if (acc == NULL) 1899 1.40.10.2 rumble acc = ts == NULL ? 1900 1.40.10.2 rumble (getnanotime(&tsb), ts = &tsb) : ts; 1901 1.40.10.2 rumble unix2dostime(acc, gmtoff, &dep->de_ADate, NULL, NULL); 1902 1.40.10.2 rumble } 1903 1.40.10.2 rumble if (dep->de_flag & DE_CREATE) { 1904 1.40.10.2 rumble if (cre == NULL) 1905 1.40.10.2 rumble cre = ts == NULL ? 1906 1.40.10.2 rumble (getnanotime(&tsb), ts = &tsb) : ts; 1907 1.40.10.2 rumble unix2dostime(cre, gmtoff, &dep->de_CDate, 1908 1.40.10.2 rumble &dep->de_CTime, &dep->de_CHun); 1909 1.40.10.2 rumble } 1910 1.40.10.2 rumble } 1911 1.40.10.2 rumble 1912 1.40.10.2 rumble dep->de_flag &= ~(DE_UPDATE | DE_CREATE | DE_ACCESS); 1913 1.40.10.2 rumble } 1914 1.40.10.2 rumble 1915 1.40.10.2 rumble /* Global vfs data structures for msdosfs */ 1916 1.40.10.2 rumble int (**msdosfs_vnodeop_p)(void *); 1917 1.40.10.2 rumble const struct vnodeopv_entry_desc msdosfs_vnodeop_entries[] = { 1918 1.40.10.2 rumble { &vop_default_desc, vn_default_error }, 1919 1.40.10.2 rumble { &vop_lookup_desc, msdosfs_lookup }, /* lookup */ 1920 1.40.10.2 rumble { &vop_create_desc, msdosfs_create }, /* create */ 1921 1.40.10.2 rumble { &vop_mknod_desc, msdosfs_mknod }, /* mknod */ 1922 1.40.10.2 rumble { &vop_open_desc, msdosfs_open }, /* open */ 1923 1.40.10.2 rumble { &vop_close_desc, msdosfs_close }, /* close */ 1924 1.40.10.2 rumble { &vop_access_desc, msdosfs_access }, /* access */ 1925 1.40.10.2 rumble { &vop_getattr_desc, msdosfs_getattr }, /* getattr */ 1926 1.40.10.2 rumble { &vop_setattr_desc, msdosfs_setattr }, /* setattr */ 1927 1.40.10.2 rumble { &vop_read_desc, msdosfs_read }, /* read */ 1928 1.40.10.2 rumble { &vop_write_desc, msdosfs_write }, /* write */ 1929 1.40.10.2 rumble { &vop_lease_desc, msdosfs_lease_check }, /* lease */ 1930 1.40.10.2 rumble { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 1931 1.40.10.2 rumble { &vop_ioctl_desc, msdosfs_ioctl }, /* ioctl */ 1932 1.40.10.2 rumble { &vop_poll_desc, msdosfs_poll }, /* poll */ 1933 1.40.10.2 rumble { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 1934 1.40.10.2 rumble { &vop_revoke_desc, msdosfs_revoke }, /* revoke */ 1935 1.40.10.2 rumble { &vop_mmap_desc, msdosfs_mmap }, /* mmap */ 1936 1.40.10.2 rumble { &vop_fsync_desc, msdosfs_fsync }, /* fsync */ 1937 1.40.10.2 rumble { &vop_seek_desc, msdosfs_seek }, /* seek */ 1938 1.40.10.2 rumble { &vop_remove_desc, msdosfs_remove }, /* remove */ 1939 1.40.10.2 rumble { &vop_link_desc, msdosfs_link }, /* link */ 1940 1.40.10.2 rumble { &vop_rename_desc, msdosfs_rename }, /* rename */ 1941 1.40.10.2 rumble { &vop_mkdir_desc, msdosfs_mkdir }, /* mkdir */ 1942 1.40.10.2 rumble { &vop_rmdir_desc, msdosfs_rmdir }, /* rmdir */ 1943 1.40.10.2 rumble { &vop_symlink_desc, msdosfs_symlink }, /* symlink */ 1944 1.40.10.2 rumble { &vop_readdir_desc, msdosfs_readdir }, /* readdir */ 1945 1.40.10.2 rumble { &vop_readlink_desc, msdosfs_readlink }, /* readlink */ 1946 1.40.10.2 rumble { &vop_abortop_desc, msdosfs_abortop }, /* abortop */ 1947 1.40.10.2 rumble { &vop_inactive_desc, msdosfs_inactive }, /* inactive */ 1948 1.40.10.2 rumble { &vop_reclaim_desc, msdosfs_reclaim }, /* reclaim */ 1949 1.40.10.2 rumble { &vop_lock_desc, genfs_lock }, /* lock */ 1950 1.40.10.2 rumble { &vop_unlock_desc, genfs_unlock }, /* unlock */ 1951 1.40.10.2 rumble { &vop_bmap_desc, msdosfs_bmap }, /* bmap */ 1952 1.40.10.2 rumble { &vop_strategy_desc, msdosfs_strategy }, /* strategy */ 1953 1.40.10.2 rumble { &vop_print_desc, msdosfs_print }, /* print */ 1954 1.40.10.2 rumble { &vop_islocked_desc, genfs_islocked }, /* islocked */ 1955 1.40.10.2 rumble { &vop_pathconf_desc, msdosfs_pathconf }, /* pathconf */ 1956 1.40.10.2 rumble { &vop_advlock_desc, msdosfs_advlock }, /* advlock */ 1957 1.40.10.2 rumble { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 1958 1.40.10.2 rumble { &vop_getpages_desc, genfs_getpages }, /* getpages */ 1959 1.40.10.2 rumble { &vop_putpages_desc, genfs_putpages }, /* putpages */ 1960 1.40.10.2 rumble { NULL, NULL } 1961 1.40.10.2 rumble }; 1962 1.40.10.2 rumble const struct vnodeopv_desc msdosfs_vnodeop_opv_desc = 1963 1.40.10.2 rumble { &msdosfs_vnodeop_p, msdosfs_vnodeop_entries }; 1964
Indexes created Tue Oct 28 02:10:10 GMT 2025