msdosfs_vnops.c revision 1.52.10.2
1 1.52.10.2 christos /* $NetBSD: msdosfs_vnops.c,v 1.52.10.2 2008/11/09 02:05:20 christos Exp $ */ 2 1.52.10.2 christos 3 1.52.10.2 christos /*- 4 1.52.10.2 christos * Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank. 5 1.52.10.2 christos * Copyright (C) 1994, 1995, 1997 TooLs GmbH. 6 1.52.10.2 christos * All rights reserved. 7 1.52.10.2 christos * Original code by Paul Popelka (paulp (at) uts.amdahl.com) (see below). 8 1.52.10.2 christos * 9 1.52.10.2 christos * Redistribution and use in source and binary forms, with or without 10 1.52.10.2 christos * modification, are permitted provided that the following conditions 11 1.52.10.2 christos * are met: 12 1.52.10.2 christos * 1. Redistributions of source code must retain the above copyright 13 1.52.10.2 christos * notice, this list of conditions and the following disclaimer. 14 1.52.10.2 christos * 2. Redistributions in binary form must reproduce the above copyright 15 1.52.10.2 christos * notice, this list of conditions and the following disclaimer in the 16 1.52.10.2 christos * documentation and/or other materials provided with the distribution. 17 1.52.10.2 christos * 3. All advertising materials mentioning features or use of this software 18 1.52.10.2 christos * must display the following acknowledgement: 19 1.52.10.2 christos * This product includes software developed by TooLs GmbH. 20 1.52.10.2 christos * 4. The name of TooLs GmbH may not be used to endorse or promote products 21 1.52.10.2 christos * derived from this software without specific prior written permission. 22 1.52.10.2 christos * 23 1.52.10.2 christos * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 24 1.52.10.2 christos * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 1.52.10.2 christos * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 1.52.10.2 christos * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 1.52.10.2 christos * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 1.52.10.2 christos * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 29 1.52.10.2 christos * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 30 1.52.10.2 christos * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 31 1.52.10.2 christos * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 32 1.52.10.2 christos * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 1.52.10.2 christos */ 34 1.52.10.2 christos /* 35 1.52.10.2 christos * Written by Paul Popelka (paulp (at) uts.amdahl.com) 36 1.52.10.2 christos * 37 1.52.10.2 christos * You can do anything you want with this software, just don't say you wrote 38 1.52.10.2 christos * it, and don't remove this notice. 39 1.52.10.2 christos * 40 1.52.10.2 christos * This software is provided "as is". 41 1.52.10.2 christos * 42 1.52.10.2 christos * The author supplies this software to be publicly redistributed on the 43 1.52.10.2 christos * understanding that the author is not responsible for the correct 44 1.52.10.2 christos * functioning of this software in any circumstances and is not liable for 45 1.52.10.2 christos * any damages caused by this software. 46 1.52.10.2 christos * 47 1.52.10.2 christos * October 1992 48 1.52.10.2 christos */ 49 1.52.10.2 christos 50 1.52.10.2 christos #include <sys/cdefs.h> 51 1.52.10.2 christos __KERNEL_RCSID(0, "$NetBSD: msdosfs_vnops.c,v 1.52.10.2 2008/11/09 02:05:20 christos Exp $"); 52 1.52.10.2 christos 53 1.52.10.2 christos #include <sys/param.h> 54 1.52.10.2 christos #include <sys/systm.h> 55 1.52.10.2 christos #include <sys/namei.h> 56 1.52.10.2 christos #include <sys/resourcevar.h> /* defines plimit structure in proc struct */ 57 1.52.10.2 christos #include <sys/kernel.h> 58 1.52.10.2 christos #include <sys/file.h> /* define FWRITE ... */ 59 1.52.10.2 christos #include <sys/stat.h> 60 1.52.10.2 christos #include <sys/buf.h> 61 1.52.10.2 christos #include <sys/proc.h> 62 1.52.10.2 christos #include <sys/mount.h> 63 1.52.10.2 christos #include <sys/vnode.h> 64 1.52.10.2 christos #include <sys/signalvar.h> 65 1.52.10.2 christos #include <sys/malloc.h> 66 1.52.10.2 christos #include <sys/dirent.h> 67 1.52.10.2 christos #include <sys/lockf.h> 68 1.52.10.2 christos #include <sys/kauth.h> 69 1.52.10.2 christos 70 1.52.10.2 christos #include <miscfs/genfs/genfs.h> 71 1.52.10.2 christos #include <miscfs/specfs/specdev.h> /* XXX */ /* defines v_rdev */ 72 1.52.10.2 christos 73 1.52.10.2 christos #include <uvm/uvm_extern.h> 74 1.52.10.2 christos 75 1.52.10.2 christos #include <fs/msdosfs/bpb.h> 76 1.52.10.2 christos #include <fs/msdosfs/direntry.h> 77 1.52.10.2 christos #include <fs/msdosfs/denode.h> 78 1.52.10.2 christos #include <fs/msdosfs/msdosfsmount.h> 79 1.52.10.2 christos #include <fs/msdosfs/fat.h> 80 1.52.10.2 christos 81 1.52.10.2 christos /* 82 1.52.10.2 christos * Some general notes: 83 1.52.10.2 christos * 84 1.52.10.2 christos * In the ufs filesystem the inodes, superblocks, and indirect blocks are 85 1.52.10.2 christos * read/written using the vnode for the filesystem. Blocks that represent 86 1.52.10.2 christos * the contents of a file are read/written using the vnode for the file 87 1.52.10.2 christos * (including directories when they are read/written as files). This 88 1.52.10.2 christos * presents problems for the dos filesystem because data that should be in 89 1.52.10.2 christos * an inode (if dos had them) resides in the directory itself. Since we 90 1.52.10.2 christos * must update directory entries without the benefit of having the vnode 91 1.52.10.2 christos * for the directory we must use the vnode for the filesystem. This means 92 1.52.10.2 christos * that when a directory is actually read/written (via read, write, or 93 1.52.10.2 christos * readdir, or seek) we must use the vnode for the filesystem instead of 94 1.52.10.2 christos * the vnode for the directory as would happen in ufs. This is to insure we 95 1.52.10.2 christos * retrieve the correct block from the buffer cache since the hash value is 96 1.52.10.2 christos * based upon the vnode address and the desired block number. 97 1.52.10.2 christos */ 98 1.52.10.2 christos 99 1.52.10.2 christos /* 100 1.52.10.2 christos * Create a regular file. On entry the directory to contain the file being 101 1.52.10.2 christos * created is locked. We must release before we return. We must also free 102 1.52.10.2 christos * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or 103 1.52.10.2 christos * only if the SAVESTART bit in cn_flags is clear on success. 104 1.52.10.2 christos */ 105 1.52.10.2 christos int 106 1.52.10.2 christos msdosfs_create(v) 107 1.52.10.2 christos void *v; 108 1.52.10.2 christos { 109 1.52.10.2 christos struct vop_create_args /* { 110 1.52.10.2 christos struct vnode *a_dvp; 111 1.52.10.2 christos struct vnode **a_vpp; 112 1.52.10.2 christos struct componentname *a_cnp; 113 1.52.10.2 christos struct vattr *a_vap; 114 1.52.10.2 christos } */ *ap = v; 115 1.52.10.2 christos struct componentname *cnp = ap->a_cnp; 116 1.52.10.2 christos struct denode ndirent; 117 1.52.10.2 christos struct denode *dep; 118 1.52.10.2 christos struct denode *pdep = VTODE(ap->a_dvp); 119 1.52.10.2 christos int error; 120 1.52.10.2 christos 121 1.52.10.2 christos #ifdef MSDOSFS_DEBUG 122 1.52.10.2 christos printf("msdosfs_create(cnp %p, vap %p\n", cnp, ap->a_vap); 123 1.52.10.2 christos #endif 124 1.52.10.2 christos 125 1.52.10.2 christos /* 126 1.52.10.2 christos * If this is the root directory and there is no space left we 127 1.52.10.2 christos * can't do anything. This is because the root directory can not 128 1.52.10.2 christos * change size. 129 1.52.10.2 christos */ 130 1.52.10.2 christos if (pdep->de_StartCluster == MSDOSFSROOT 131 1.52.10.2 christos && pdep->de_fndoffset >= pdep->de_FileSize) { 132 1.52.10.2 christos error = ENOSPC; 133 1.52.10.2 christos goto bad; 134 1.52.10.2 christos } 135 1.52.10.2 christos 136 1.52.10.2 christos /* 137 1.52.10.2 christos * Create a directory entry for the file, then call createde() to 138 1.52.10.2 christos * have it installed. NOTE: DOS files are always executable. We 139 1.52.10.2 christos * use the absence of the owner write bit to make the file 140 1.52.10.2 christos * readonly. 141 1.52.10.2 christos */ 142 1.52.10.2 christos #ifdef DIAGNOSTIC 143 1.52.10.2 christos if ((cnp->cn_flags & HASBUF) == 0) 144 1.52.10.2 christos panic("msdosfs_create: no name"); 145 1.52.10.2 christos #endif 146 1.52.10.2 christos memset(&ndirent, 0, sizeof(ndirent)); 147 1.52.10.2 christos if ((error = uniqdosname(pdep, cnp, ndirent.de_Name)) != 0) 148 1.52.10.2 christos goto bad; 149 1.52.10.2 christos 150 1.52.10.2 christos ndirent.de_Attributes = (ap->a_vap->va_mode & S_IWUSR) ? 151 1.52.10.2 christos ATTR_ARCHIVE : ATTR_ARCHIVE | ATTR_READONLY; 152 1.52.10.2 christos ndirent.de_StartCluster = 0; 153 1.52.10.2 christos ndirent.de_FileSize = 0; 154 1.52.10.2 christos ndirent.de_dev = pdep->de_dev; 155 1.52.10.2 christos ndirent.de_devvp = pdep->de_devvp; 156 1.52.10.2 christos ndirent.de_pmp = pdep->de_pmp; 157 1.52.10.2 christos ndirent.de_flag = DE_ACCESS | DE_CREATE | DE_UPDATE; 158 1.52.10.2 christos DETIMES(&ndirent, NULL, NULL, NULL, pdep->de_pmp->pm_gmtoff); 159 1.52.10.2 christos if ((error = createde(&ndirent, pdep, &dep, cnp)) != 0) 160 1.52.10.2 christos goto bad; 161 1.52.10.2 christos if ((cnp->cn_flags & SAVESTART) == 0) 162 1.52.10.2 christos PNBUF_PUT(cnp->cn_pnbuf); 163 1.52.10.2 christos VN_KNOTE(ap->a_dvp, NOTE_WRITE); 164 1.52.10.2 christos vput(ap->a_dvp); 165 1.52.10.2 christos *ap->a_vpp = DETOV(dep); 166 1.52.10.2 christos return (0); 167 1.52.10.2 christos 168 1.52.10.2 christos bad: 169 1.52.10.2 christos PNBUF_PUT(cnp->cn_pnbuf); 170 1.52.10.2 christos vput(ap->a_dvp); 171 1.52.10.2 christos return (error); 172 1.52.10.2 christos } 173 1.52.10.2 christos 174 1.52.10.2 christos int 175 1.52.10.2 christos msdosfs_mknod(v) 176 1.52.10.2 christos void *v; 177 1.52.10.2 christos { 178 1.52.10.2 christos struct vop_mknod_args /* { 179 1.52.10.2 christos struct vnode *a_dvp; 180 1.52.10.2 christos struct vnode **a_vpp; 181 1.52.10.2 christos struct componentname *a_cnp; 182 1.52.10.2 christos struct vattr *a_vap; 183 1.52.10.2 christos } */ *ap = v; 184 1.52.10.2 christos 185 1.52.10.2 christos PNBUF_PUT(ap->a_cnp->cn_pnbuf); 186 1.52.10.2 christos vput(ap->a_dvp); 187 1.52.10.2 christos return (EINVAL); 188 1.52.10.2 christos } 189 1.52.10.2 christos 190 1.52.10.2 christos int 191 1.52.10.2 christos msdosfs_open(void *v) 192 1.52.10.2 christos { 193 1.52.10.2 christos #if 0 194 1.52.10.2 christos struct vop_open_args /* { 195 1.52.10.2 christos struct vnode *a_vp; 196 1.52.10.2 christos int a_mode; 197 1.52.10.2 christos kauth_cred_t a_cred; 198 1.52.10.2 christos } */ *ap; 199 1.52.10.2 christos #endif 200 1.52.10.2 christos 201 1.52.10.2 christos return (0); 202 1.52.10.2 christos } 203 1.52.10.2 christos 204 1.52.10.2 christos int 205 1.52.10.2 christos msdosfs_close(v) 206 1.52.10.2 christos void *v; 207 1.52.10.2 christos { 208 1.52.10.2 christos struct vop_close_args /* { 209 1.52.10.2 christos struct vnode *a_vp; 210 1.52.10.2 christos int a_fflag; 211 1.52.10.2 christos kauth_cred_t a_cred; 212 1.52.10.2 christos } */ *ap = v; 213 1.52.10.2 christos struct vnode *vp = ap->a_vp; 214 1.52.10.2 christos struct denode *dep = VTODE(vp); 215 1.52.10.2 christos 216 1.52.10.2 christos mutex_enter(&vp->v_interlock); 217 1.52.10.2 christos if (vp->v_usecount > 1) 218 1.52.10.2 christos DETIMES(dep, NULL, NULL, NULL, dep->de_pmp->pm_gmtoff); 219 1.52.10.2 christos mutex_exit(&vp->v_interlock); 220 1.52.10.2 christos return (0); 221 1.52.10.2 christos } 222 1.52.10.2 christos 223 1.52.10.2 christos int 224 1.52.10.2 christos msdosfs_access(v) 225 1.52.10.2 christos void *v; 226 1.52.10.2 christos { 227 1.52.10.2 christos struct vop_access_args /* { 228 1.52.10.2 christos struct vnode *a_vp; 229 1.52.10.2 christos int a_mode; 230 1.52.10.2 christos kauth_cred_t a_cred; 231 1.52.10.2 christos } */ *ap = v; 232 1.52.10.2 christos struct vnode *vp = ap->a_vp; 233 1.52.10.2 christos struct denode *dep = VTODE(vp); 234 1.52.10.2 christos struct msdosfsmount *pmp = dep->de_pmp; 235 1.52.10.2 christos mode_t mode = ap->a_mode; 236 1.52.10.2 christos 237 1.52.10.2 christos /* 238 1.52.10.2 christos * Disallow write attempts on read-only file systems; 239 1.52.10.2 christos * unless the file is a socket, fifo, or a block or 240 1.52.10.2 christos * character device resident on the file system. 241 1.52.10.2 christos */ 242 1.52.10.2 christos if (mode & VWRITE) { 243 1.52.10.2 christos switch (vp->v_type) { 244 1.52.10.2 christos case VDIR: 245 1.52.10.2 christos case VLNK: 246 1.52.10.2 christos case VREG: 247 1.52.10.2 christos if (vp->v_mount->mnt_flag & MNT_RDONLY) 248 1.52.10.2 christos return (EROFS); 249 1.52.10.2 christos default: 250 1.52.10.2 christos break; 251 1.52.10.2 christos } 252 1.52.10.2 christos } 253 1.52.10.2 christos 254 1.52.10.2 christos if ((dep->de_Attributes & ATTR_READONLY) == 0) 255 1.52.10.2 christos mode = S_IRWXU|S_IRWXG|S_IRWXO; 256 1.52.10.2 christos else 257 1.52.10.2 christos mode = S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH; 258 1.52.10.2 christos return (vaccess(ap->a_vp->v_type, 259 1.52.10.2 christos mode & (vp->v_type == VDIR ? pmp->pm_dirmask : pmp->pm_mask), 260 1.52.10.2 christos pmp->pm_uid, pmp->pm_gid, ap->a_mode, ap->a_cred)); 261 1.52.10.2 christos } 262 1.52.10.2 christos 263 1.52.10.2 christos int 264 1.52.10.2 christos msdosfs_getattr(v) 265 1.52.10.2 christos void *v; 266 1.52.10.2 christos { 267 1.52.10.2 christos struct vop_getattr_args /* { 268 1.52.10.2 christos struct vnode *a_vp; 269 1.52.10.2 christos struct vattr *a_vap; 270 1.52.10.2 christos kauth_cred_t a_cred; 271 1.52.10.2 christos } */ *ap = v; 272 1.52.10.2 christos struct denode *dep = VTODE(ap->a_vp); 273 1.52.10.2 christos struct msdosfsmount *pmp = dep->de_pmp; 274 1.52.10.2 christos struct vattr *vap = ap->a_vap; 275 1.52.10.2 christos mode_t mode; 276 1.52.10.2 christos u_long dirsperblk = pmp->pm_BytesPerSec / sizeof(struct direntry); 277 1.52.10.2 christos ino_t fileid; 278 1.52.10.2 christos 279 1.52.10.2 christos DETIMES(dep, NULL, NULL, NULL, pmp->pm_gmtoff); 280 1.52.10.2 christos vap->va_fsid = dep->de_dev; 281 1.52.10.2 christos /* 282 1.52.10.2 christos * The following computation of the fileid must be the same as that 283 1.52.10.2 christos * used in msdosfs_readdir() to compute d_fileno. If not, pwd 284 1.52.10.2 christos * doesn't work. 285 1.52.10.2 christos */ 286 1.52.10.2 christos if (dep->de_Attributes & ATTR_DIRECTORY) { 287 1.52.10.2 christos fileid = cntobn(pmp, (ino_t)dep->de_StartCluster) * dirsperblk; 288 1.52.10.2 christos if (dep->de_StartCluster == MSDOSFSROOT) 289 1.52.10.2 christos fileid = 1; 290 1.52.10.2 christos } else { 291 1.52.10.2 christos fileid = cntobn(pmp, (ino_t)dep->de_dirclust) * dirsperblk; 292 1.52.10.2 christos if (dep->de_dirclust == MSDOSFSROOT) 293 1.52.10.2 christos fileid = roottobn(pmp, 0) * dirsperblk; 294 1.52.10.2 christos fileid += dep->de_diroffset / sizeof(struct direntry); 295 1.52.10.2 christos } 296 1.52.10.2 christos vap->va_fileid = fileid; 297 1.52.10.2 christos if ((dep->de_Attributes & ATTR_READONLY) == 0) 298 1.52.10.2 christos mode = S_IRWXU|S_IRWXG|S_IRWXO; 299 1.52.10.2 christos else 300 1.52.10.2 christos mode = S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH; 301 1.52.10.2 christos vap->va_mode = 302 1.52.10.2 christos mode & (ap->a_vp->v_type == VDIR ? pmp->pm_dirmask : pmp->pm_mask); 303 1.52.10.2 christos vap->va_uid = pmp->pm_uid; 304 1.52.10.2 christos vap->va_gid = pmp->pm_gid; 305 1.52.10.2 christos vap->va_nlink = 1; 306 1.52.10.2 christos vap->va_rdev = 0; 307 1.52.10.2 christos vap->va_size = ap->a_vp->v_size; 308 1.52.10.2 christos dos2unixtime(dep->de_MDate, dep->de_MTime, 0, pmp->pm_gmtoff, 309 1.52.10.2 christos &vap->va_mtime); 310 1.52.10.2 christos if (dep->de_pmp->pm_flags & MSDOSFSMNT_LONGNAME) { 311 1.52.10.2 christos dos2unixtime(dep->de_ADate, 0, 0, pmp->pm_gmtoff, 312 1.52.10.2 christos &vap->va_atime); 313 1.52.10.2 christos dos2unixtime(dep->de_CDate, dep->de_CTime, dep->de_CHun, 314 1.52.10.2 christos pmp->pm_gmtoff, &vap->va_ctime); 315 1.52.10.2 christos } else { 316 1.52.10.2 christos vap->va_atime = vap->va_mtime; 317 1.52.10.2 christos vap->va_ctime = vap->va_mtime; 318 1.52.10.2 christos } 319 1.52.10.2 christos vap->va_flags = 0; 320 1.52.10.2 christos if ((dep->de_Attributes & ATTR_ARCHIVE) == 0) 321 1.52.10.2 christos vap->va_mode |= S_ARCH1; 322 1.52.10.2 christos vap->va_gen = 0; 323 1.52.10.2 christos vap->va_blocksize = pmp->pm_bpcluster; 324 1.52.10.2 christos vap->va_bytes = 325 1.52.10.2 christos (dep->de_FileSize + pmp->pm_crbomask) & ~pmp->pm_crbomask; 326 1.52.10.2 christos vap->va_type = ap->a_vp->v_type; 327 1.52.10.2 christos return (0); 328 1.52.10.2 christos } 329 1.52.10.2 christos 330 1.52.10.2 christos int 331 1.52.10.2 christos msdosfs_setattr(v) 332 1.52.10.2 christos void *v; 333 1.52.10.2 christos { 334 1.52.10.2 christos struct vop_setattr_args /* { 335 1.52.10.2 christos struct vnode *a_vp; 336 1.52.10.2 christos struct vattr *a_vap; 337 1.52.10.2 christos kauth_cred_t a_cred; 338 1.52.10.2 christos } */ *ap = v; 339 1.52.10.2 christos int error = 0, de_changed = 0; 340 1.52.10.2 christos struct denode *dep = VTODE(ap->a_vp); 341 1.52.10.2 christos struct msdosfsmount *pmp = dep->de_pmp; 342 1.52.10.2 christos struct vnode *vp = ap->a_vp; 343 1.52.10.2 christos struct vattr *vap = ap->a_vap; 344 1.52.10.2 christos kauth_cred_t cred = ap->a_cred; 345 1.52.10.2 christos 346 1.52.10.2 christos #ifdef MSDOSFS_DEBUG 347 1.52.10.2 christos printf("msdosfs_setattr(): vp %p, vap %p, cred %p\n", 348 1.52.10.2 christos ap->a_vp, vap, cred); 349 1.52.10.2 christos #endif 350 1.52.10.2 christos /* 351 1.52.10.2 christos * Note we silently ignore uid or gid changes. 352 1.52.10.2 christos */ 353 1.52.10.2 christos if ((vap->va_type != VNON) || (vap->va_nlink != (nlink_t)VNOVAL) || 354 1.52.10.2 christos (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || 355 1.52.10.2 christos (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || 356 1.52.10.2 christos (vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL) || 357 1.52.10.2 christos (vap->va_uid != VNOVAL && vap->va_uid != pmp->pm_uid) || 358 1.52.10.2 christos (vap->va_gid != VNOVAL && vap->va_gid != pmp->pm_gid)) { 359 1.52.10.2 christos #ifdef MSDOSFS_DEBUG 360 1.52.10.2 christos printf("msdosfs_setattr(): returning EINVAL\n"); 361 1.52.10.2 christos printf(" va_type %d, va_nlink %x, va_fsid %lx, va_fileid %llx\n", 362 1.52.10.2 christos vap->va_type, vap->va_nlink, vap->va_fsid, 363 1.52.10.2 christos (unsigned long long)vap->va_fileid); 364 1.52.10.2 christos printf(" va_blocksize %lx, va_rdev %x, va_bytes %qx, va_gen %lx\n", 365 1.52.10.2 christos vap->va_blocksize, vap->va_rdev, (long long)vap->va_bytes, vap->va_gen); 366 1.52.10.2 christos #endif 367 1.52.10.2 christos return (EINVAL); 368 1.52.10.2 christos } 369 1.52.10.2 christos /* 370 1.52.10.2 christos * Silently ignore attributes modifications on directories. 371 1.52.10.2 christos */ 372 1.52.10.2 christos if (ap->a_vp->v_type == VDIR) 373 1.52.10.2 christos return 0; 374 1.52.10.2 christos 375 1.52.10.2 christos if (vap->va_size != VNOVAL) { 376 1.52.10.2 christos if (vp->v_mount->mnt_flag & MNT_RDONLY) 377 1.52.10.2 christos return (EROFS); 378 1.52.10.2 christos error = detrunc(dep, (u_long)vap->va_size, 0, cred); 379 1.52.10.2 christos if (error) 380 1.52.10.2 christos return (error); 381 1.52.10.2 christos de_changed = 1; 382 1.52.10.2 christos } 383 1.52.10.2 christos if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) { 384 1.52.10.2 christos if (vp->v_mount->mnt_flag & MNT_RDONLY) 385 1.52.10.2 christos return (EROFS); 386 1.52.10.2 christos if (kauth_cred_geteuid(cred) != pmp->pm_uid && 387 1.52.10.2 christos (error = kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER, 388 1.52.10.2 christos NULL)) && 389 1.52.10.2 christos ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 390 1.52.10.2 christos (error = VOP_ACCESS(ap->a_vp, VWRITE, cred)))) 391 1.52.10.2 christos return (error); 392 1.52.10.2 christos if ((pmp->pm_flags & MSDOSFSMNT_NOWIN95) == 0 && 393 1.52.10.2 christos vap->va_atime.tv_sec != VNOVAL) 394 1.52.10.2 christos unix2dostime(&vap->va_atime, pmp->pm_gmtoff, &dep->de_ADate, NULL, NULL); 395 1.52.10.2 christos if (vap->va_mtime.tv_sec != VNOVAL) 396 1.52.10.2 christos unix2dostime(&vap->va_mtime, pmp->pm_gmtoff, &dep->de_MDate, &dep->de_MTime, NULL); 397 1.52.10.2 christos dep->de_Attributes |= ATTR_ARCHIVE; 398 1.52.10.2 christos dep->de_flag |= DE_MODIFIED; 399 1.52.10.2 christos de_changed = 1; 400 1.52.10.2 christos } 401 1.52.10.2 christos /* 402 1.52.10.2 christos * DOS files only have the ability to have their writability 403 1.52.10.2 christos * attribute set, so we use the owner write bit to set the readonly 404 1.52.10.2 christos * attribute. 405 1.52.10.2 christos */ 406 1.52.10.2 christos if (vap->va_mode != (mode_t)VNOVAL) { 407 1.52.10.2 christos if (vp->v_mount->mnt_flag & MNT_RDONLY) 408 1.52.10.2 christos return (EROFS); 409 1.52.10.2 christos if (kauth_cred_geteuid(cred) != pmp->pm_uid && 410 1.52.10.2 christos (error = kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER, 411 1.52.10.2 christos NULL))) 412 1.52.10.2 christos return (error); 413 1.52.10.2 christos /* We ignore the read and execute bits. */ 414 1.52.10.2 christos if (vap->va_mode & S_IWUSR) 415 1.52.10.2 christos dep->de_Attributes &= ~ATTR_READONLY; 416 1.52.10.2 christos else 417 1.52.10.2 christos dep->de_Attributes |= ATTR_READONLY; 418 1.52.10.2 christos dep->de_flag |= DE_MODIFIED; 419 1.52.10.2 christos de_changed = 1; 420 1.52.10.2 christos } 421 1.52.10.2 christos /* 422 1.52.10.2 christos * Allow the `archived' bit to be toggled. 423 1.52.10.2 christos */ 424 1.52.10.2 christos if (vap->va_flags != VNOVAL) { 425 1.52.10.2 christos if (vp->v_mount->mnt_flag & MNT_RDONLY) 426 1.52.10.2 christos return (EROFS); 427 1.52.10.2 christos if (kauth_cred_geteuid(cred) != pmp->pm_uid && 428 1.52.10.2 christos (error = kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER, 429 1.52.10.2 christos NULL))) 430 1.52.10.2 christos return (error); 431 1.52.10.2 christos if (vap->va_flags & SF_ARCHIVED) 432 1.52.10.2 christos dep->de_Attributes &= ~ATTR_ARCHIVE; 433 1.52.10.2 christos else 434 1.52.10.2 christos dep->de_Attributes |= ATTR_ARCHIVE; 435 1.52.10.2 christos dep->de_flag |= DE_MODIFIED; 436 1.52.10.2 christos de_changed = 1; 437 1.52.10.2 christos } 438 1.52.10.2 christos 439 1.52.10.2 christos if (de_changed) { 440 1.52.10.2 christos VN_KNOTE(vp, NOTE_ATTRIB); 441 1.52.10.2 christos return (deupdat(dep, 1)); 442 1.52.10.2 christos } else 443 1.52.10.2 christos return (0); 444 1.52.10.2 christos } 445 1.52.10.2 christos 446 1.52.10.2 christos int 447 1.52.10.2 christos msdosfs_read(v) 448 1.52.10.2 christos void *v; 449 1.52.10.2 christos { 450 1.52.10.2 christos struct vop_read_args /* { 451 1.52.10.2 christos struct vnode *a_vp; 452 1.52.10.2 christos struct uio *a_uio; 453 1.52.10.2 christos int a_ioflag; 454 1.52.10.2 christos kauth_cred_t a_cred; 455 1.52.10.2 christos } */ *ap = v; 456 1.52.10.2 christos int error = 0, flags; 457 1.52.10.2 christos int64_t diff; 458 1.52.10.2 christos int blsize; 459 1.52.10.2 christos long n; 460 1.52.10.2 christos long on; 461 1.52.10.2 christos daddr_t lbn; 462 1.52.10.2 christos void *win; 463 1.52.10.2 christos vsize_t bytelen; 464 1.52.10.2 christos struct buf *bp; 465 1.52.10.2 christos struct vnode *vp = ap->a_vp; 466 1.52.10.2 christos struct denode *dep = VTODE(vp); 467 1.52.10.2 christos struct msdosfsmount *pmp = dep->de_pmp; 468 1.52.10.2 christos struct uio *uio = ap->a_uio; 469 1.52.10.2 christos 470 1.52.10.2 christos /* 471 1.52.10.2 christos * If they didn't ask for any data, then we are done. 472 1.52.10.2 christos */ 473 1.52.10.2 christos 474 1.52.10.2 christos if (uio->uio_resid == 0) 475 1.52.10.2 christos return (0); 476 1.52.10.2 christos if (uio->uio_offset < 0) 477 1.52.10.2 christos return (EINVAL); 478 1.52.10.2 christos if (uio->uio_offset >= dep->de_FileSize) 479 1.52.10.2 christos return (0); 480 1.52.10.2 christos 481 1.52.10.2 christos if (vp->v_type == VREG) { 482 1.52.10.2 christos const int advice = IO_ADV_DECODE(ap->a_ioflag); 483 1.52.10.2 christos 484 1.52.10.2 christos while (uio->uio_resid > 0) { 485 1.52.10.2 christos bytelen = MIN(dep->de_FileSize - uio->uio_offset, 486 1.52.10.2 christos uio->uio_resid); 487 1.52.10.2 christos 488 1.52.10.2 christos if (bytelen == 0) 489 1.52.10.2 christos break; 490 1.52.10.2 christos win = ubc_alloc(&vp->v_uobj, uio->uio_offset, 491 1.52.10.2 christos &bytelen, advice, UBC_READ); 492 1.52.10.2 christos error = uiomove(win, bytelen, uio); 493 1.52.10.2 christos flags = UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0; 494 1.52.10.2 christos ubc_release(win, flags); 495 1.52.10.2 christos if (error) 496 1.52.10.2 christos break; 497 1.52.10.2 christos } 498 1.52.10.2 christos dep->de_flag |= DE_ACCESS; 499 1.52.10.2 christos goto out; 500 1.52.10.2 christos } 501 1.52.10.2 christos 502 1.52.10.2 christos /* this loop is only for directories now */ 503 1.52.10.2 christos do { 504 1.52.10.2 christos lbn = de_cluster(pmp, uio->uio_offset); 505 1.52.10.2 christos on = uio->uio_offset & pmp->pm_crbomask; 506 1.52.10.2 christos n = MIN(pmp->pm_bpcluster - on, uio->uio_resid); 507 1.52.10.2 christos if (uio->uio_offset >= dep->de_FileSize) 508 1.52.10.2 christos return (0); 509 1.52.10.2 christos /* file size (and hence diff) may be up to 4GB */ 510 1.52.10.2 christos diff = dep->de_FileSize - uio->uio_offset; 511 1.52.10.2 christos if (diff < n) 512 1.52.10.2 christos n = (long) diff; 513 1.52.10.2 christos 514 1.52.10.2 christos /* convert cluster # to sector # */ 515 1.52.10.2 christos error = pcbmap(dep, lbn, &lbn, 0, &blsize); 516 1.52.10.2 christos if (error) 517 1.52.10.2 christos return (error); 518 1.52.10.2 christos 519 1.52.10.2 christos /* 520 1.52.10.2 christos * If we are operating on a directory file then be sure to 521 1.52.10.2 christos * do i/o with the vnode for the filesystem instead of the 522 1.52.10.2 christos * vnode for the directory. 523 1.52.10.2 christos */ 524 1.52.10.2 christos error = bread(pmp->pm_devvp, de_bn2kb(pmp, lbn), blsize, 525 1.52.10.2 christos NOCRED, 0, &bp); 526 1.52.10.2 christos n = MIN(n, pmp->pm_bpcluster - bp->b_resid); 527 1.52.10.2 christos if (error) { 528 1.52.10.2 christos brelse(bp, 0); 529 1.52.10.2 christos return (error); 530 1.52.10.2 christos } 531 1.52.10.2 christos error = uiomove((char *)bp->b_data + on, (int) n, uio); 532 1.52.10.2 christos brelse(bp, 0); 533 1.52.10.2 christos } while (error == 0 && uio->uio_resid > 0 && n != 0); 534 1.52.10.2 christos 535 1.52.10.2 christos out: 536 1.52.10.2 christos if ((ap->a_ioflag & IO_SYNC) == IO_SYNC) 537 1.52.10.2 christos error = deupdat(dep, 1); 538 1.52.10.2 christos return (error); 539 1.52.10.2 christos } 540 1.52.10.2 christos 541 1.52.10.2 christos /* 542 1.52.10.2 christos * Write data to a file or directory. 543 1.52.10.2 christos */ 544 1.52.10.2 christos int 545 1.52.10.2 christos msdosfs_write(v) 546 1.52.10.2 christos void *v; 547 1.52.10.2 christos { 548 1.52.10.2 christos struct vop_write_args /* { 549 1.52.10.2 christos struct vnode *a_vp; 550 1.52.10.2 christos struct uio *a_uio; 551 1.52.10.2 christos int a_ioflag; 552 1.52.10.2 christos kauth_cred_t a_cred; 553 1.52.10.2 christos } */ *ap = v; 554 1.52.10.2 christos int resid, flags, extended = 0; 555 1.52.10.2 christos int error = 0; 556 1.52.10.2 christos int ioflag = ap->a_ioflag; 557 1.52.10.2 christos u_long osize; 558 1.52.10.2 christos u_long count; 559 1.52.10.2 christos void *win; 560 1.52.10.2 christos vsize_t bytelen; 561 1.52.10.2 christos off_t oldoff; 562 1.52.10.2 christos struct uio *uio = ap->a_uio; 563 1.52.10.2 christos struct proc *p = curproc; 564 1.52.10.2 christos struct vnode *vp = ap->a_vp; 565 1.52.10.2 christos struct denode *dep = VTODE(vp); 566 1.52.10.2 christos struct msdosfsmount *pmp = dep->de_pmp; 567 1.52.10.2 christos kauth_cred_t cred = ap->a_cred; 568 1.52.10.2 christos bool async; 569 1.52.10.2 christos 570 1.52.10.2 christos #ifdef MSDOSFS_DEBUG 571 1.52.10.2 christos printf("msdosfs_write(vp %p, uio %p, ioflag %x, cred %p\n", 572 1.52.10.2 christos vp, uio, ioflag, cred); 573 1.52.10.2 christos printf("msdosfs_write(): diroff %lu, dirclust %lu, startcluster %lu\n", 574 1.52.10.2 christos dep->de_diroffset, dep->de_dirclust, dep->de_StartCluster); 575 1.52.10.2 christos #endif 576 1.52.10.2 christos 577 1.52.10.2 christos switch (vp->v_type) { 578 1.52.10.2 christos case VREG: 579 1.52.10.2 christos if (ioflag & IO_APPEND) 580 1.52.10.2 christos uio->uio_offset = dep->de_FileSize; 581 1.52.10.2 christos break; 582 1.52.10.2 christos case VDIR: 583 1.52.10.2 christos return EISDIR; 584 1.52.10.2 christos default: 585 1.52.10.2 christos panic("msdosfs_write(): bad file type"); 586 1.52.10.2 christos } 587 1.52.10.2 christos 588 1.52.10.2 christos if (uio->uio_offset < 0) 589 1.52.10.2 christos return (EINVAL); 590 1.52.10.2 christos 591 1.52.10.2 christos if (uio->uio_resid == 0) 592 1.52.10.2 christos return (0); 593 1.52.10.2 christos 594 1.52.10.2 christos /* Don't bother to try to write files larger than the fs limit */ 595 1.52.10.2 christos if (uio->uio_offset + uio->uio_resid > MSDOSFS_FILESIZE_MAX) 596 1.52.10.2 christos return (EFBIG); 597 1.52.10.2 christos 598 1.52.10.2 christos /* 599 1.52.10.2 christos * If they've exceeded their filesize limit, tell them about it. 600 1.52.10.2 christos */ 601 1.52.10.2 christos if (((uio->uio_offset + uio->uio_resid) > 602 1.52.10.2 christos p->p_rlimit[RLIMIT_FSIZE].rlim_cur)) { 603 1.52.10.2 christos mutex_enter(proc_lock); 604 1.52.10.2 christos psignal(p, SIGXFSZ); 605 1.52.10.2 christos mutex_exit(proc_lock); 606 1.52.10.2 christos return (EFBIG); 607 1.52.10.2 christos } 608 1.52.10.2 christos 609 1.52.10.2 christos /* 610 1.52.10.2 christos * If the offset we are starting the write at is beyond the end of 611 1.52.10.2 christos * the file, then they've done a seek. Unix filesystems allow 612 1.52.10.2 christos * files with holes in them, DOS doesn't so we must fill the hole 613 1.52.10.2 christos * with zeroed blocks. 614 1.52.10.2 christos */ 615 1.52.10.2 christos if (uio->uio_offset > dep->de_FileSize) { 616 1.52.10.2 christos if ((error = deextend(dep, uio->uio_offset, cred)) != 0) 617 1.52.10.2 christos return (error); 618 1.52.10.2 christos } 619 1.52.10.2 christos 620 1.52.10.2 christos /* 621 1.52.10.2 christos * Remember some values in case the write fails. 622 1.52.10.2 christos */ 623 1.52.10.2 christos async = vp->v_mount->mnt_flag & MNT_ASYNC; 624 1.52.10.2 christos resid = uio->uio_resid; 625 1.52.10.2 christos osize = dep->de_FileSize; 626 1.52.10.2 christos 627 1.52.10.2 christos /* 628 1.52.10.2 christos * If we write beyond the end of the file, extend it to its ultimate 629 1.52.10.2 christos * size ahead of the time to hopefully get a contiguous area. 630 1.52.10.2 christos */ 631 1.52.10.2 christos if (uio->uio_offset + resid > osize) { 632 1.52.10.2 christos count = de_clcount(pmp, uio->uio_offset + resid) - 633 1.52.10.2 christos de_clcount(pmp, osize); 634 1.52.10.2 christos if ((error = extendfile(dep, count, NULL, NULL, 0)) && 635 1.52.10.2 christos (error != ENOSPC || (ioflag & IO_UNIT))) 636 1.52.10.2 christos goto errexit; 637 1.52.10.2 christos 638 1.52.10.2 christos dep->de_FileSize = uio->uio_offset + resid; 639 1.52.10.2 christos /* hint uvm to not read in extended part */ 640 1.52.10.2 christos uvm_vnp_setwritesize(vp, dep->de_FileSize); 641 1.52.10.2 christos extended = 1; 642 1.52.10.2 christos } 643 1.52.10.2 christos 644 1.52.10.2 christos do { 645 1.52.10.2 christos oldoff = uio->uio_offset; 646 1.52.10.2 christos bytelen = uio->uio_resid; 647 1.52.10.2 christos 648 1.52.10.2 christos win = ubc_alloc(&vp->v_uobj, oldoff, &bytelen, UVM_ADV_NORMAL, 649 1.52.10.2 christos UBC_WRITE); 650 1.52.10.2 christos error = uiomove(win, bytelen, uio); 651 1.52.10.2 christos flags = UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0; 652 1.52.10.2 christos ubc_release(win, flags); 653 1.52.10.2 christos if (error) 654 1.52.10.2 christos break; 655 1.52.10.2 christos 656 1.52.10.2 christos /* 657 1.52.10.2 christos * flush what we just wrote if necessary. 658 1.52.10.2 christos * XXXUBC simplistic async flushing. 659 1.52.10.2 christos */ 660 1.52.10.2 christos 661 1.52.10.2 christos if (!async && oldoff >> 16 != uio->uio_offset >> 16) { 662 1.52.10.2 christos mutex_enter(&vp->v_interlock); 663 1.52.10.2 christos error = VOP_PUTPAGES(vp, (oldoff >> 16) << 16, 664 1.52.10.2 christos (uio->uio_offset >> 16) << 16, PGO_CLEANIT); 665 1.52.10.2 christos } 666 1.52.10.2 christos } while (error == 0 && uio->uio_resid > 0); 667 1.52.10.2 christos 668 1.52.10.2 christos /* set final size */ 669 1.52.10.2 christos uvm_vnp_setsize(vp, dep->de_FileSize); 670 1.52.10.2 christos if (error == 0 && ioflag & IO_SYNC) { 671 1.52.10.2 christos mutex_enter(&vp->v_interlock); 672 1.52.10.2 christos error = VOP_PUTPAGES(vp, trunc_page(oldoff), 673 1.52.10.2 christos round_page(oldoff + bytelen), PGO_CLEANIT | PGO_SYNCIO); 674 1.52.10.2 christos } 675 1.52.10.2 christos dep->de_flag |= DE_UPDATE; 676 1.52.10.2 christos 677 1.52.10.2 christos /* 678 1.52.10.2 christos * If the write failed and they want us to, truncate the file back 679 1.52.10.2 christos * to the size it was before the write was attempted. 680 1.52.10.2 christos */ 681 1.52.10.2 christos errexit: 682 1.52.10.2 christos if (resid > uio->uio_resid) 683 1.52.10.2 christos VN_KNOTE(vp, NOTE_WRITE | (extended ? NOTE_EXTEND : 0)); 684 1.52.10.2 christos if (error) { 685 1.52.10.2 christos detrunc(dep, osize, ioflag & IO_SYNC, NOCRED); 686 1.52.10.2 christos uio->uio_offset -= resid - uio->uio_resid; 687 1.52.10.2 christos uio->uio_resid = resid; 688 1.52.10.2 christos } else if ((ioflag & IO_SYNC) == IO_SYNC) 689 1.52.10.2 christos error = deupdat(dep, 1); 690 1.52.10.2 christos KASSERT(vp->v_size == dep->de_FileSize); 691 1.52.10.2 christos return (error); 692 1.52.10.2 christos } 693 1.52.10.2 christos 694 1.52.10.2 christos int 695 1.52.10.2 christos msdosfs_update(struct vnode *vp, const struct timespec *acc, 696 1.52.10.2 christos const struct timespec *mod, int flags) 697 1.52.10.2 christos { 698 1.52.10.2 christos struct buf *bp; 699 1.52.10.2 christos struct direntry *dirp; 700 1.52.10.2 christos struct denode *dep; 701 1.52.10.2 christos int error; 702 1.52.10.2 christos 703 1.52.10.2 christos if (vp->v_mount->mnt_flag & MNT_RDONLY) 704 1.52.10.2 christos return (0); 705 1.52.10.2 christos dep = VTODE(vp); 706 1.52.10.2 christos DETIMES(dep, acc, mod, NULL, dep->de_pmp->pm_gmtoff); 707 1.52.10.2 christos if ((dep->de_flag & DE_MODIFIED) == 0) 708 1.52.10.2 christos return (0); 709 1.52.10.2 christos dep->de_flag &= ~DE_MODIFIED; 710 1.52.10.2 christos if (dep->de_Attributes & ATTR_DIRECTORY) 711 1.52.10.2 christos return (0); 712 1.52.10.2 christos if (dep->de_refcnt <= 0) 713 1.52.10.2 christos return (0); 714 1.52.10.2 christos error = readde(dep, &bp, &dirp); 715 1.52.10.2 christos if (error) 716 1.52.10.2 christos return (error); 717 1.52.10.2 christos DE_EXTERNALIZE(dirp, dep); 718 1.52.10.2 christos if (flags & (UPDATE_WAIT|UPDATE_DIROP)) 719 1.52.10.2 christos return (bwrite(bp)); 720 1.52.10.2 christos else { 721 1.52.10.2 christos bdwrite(bp); 722 1.52.10.2 christos return (0); 723 1.52.10.2 christos } 724 1.52.10.2 christos } 725 1.52.10.2 christos 726 1.52.10.2 christos /* 727 1.52.10.2 christos * Flush the blocks of a file to disk. 728 1.52.10.2 christos * 729 1.52.10.2 christos * This function is worthless for vnodes that represent directories. Maybe we 730 1.52.10.2 christos * could just do a sync if they try an fsync on a directory file. 731 1.52.10.2 christos */ 732 1.52.10.2 christos int 733 1.52.10.2 christos msdosfs_remove(v) 734 1.52.10.2 christos void *v; 735 1.52.10.2 christos { 736 1.52.10.2 christos struct vop_remove_args /* { 737 1.52.10.2 christos struct vnode *a_dvp; 738 1.52.10.2 christos struct vnode *a_vp; 739 1.52.10.2 christos struct componentname *a_cnp; 740 1.52.10.2 christos } */ *ap = v; 741 1.52.10.2 christos struct denode *dep = VTODE(ap->a_vp); 742 1.52.10.2 christos struct denode *ddep = VTODE(ap->a_dvp); 743 1.52.10.2 christos int error; 744 1.52.10.2 christos 745 1.52.10.2 christos if (ap->a_vp->v_type == VDIR) 746 1.52.10.2 christos error = EPERM; 747 1.52.10.2 christos else 748 1.52.10.2 christos error = removede(ddep, dep); 749 1.52.10.2 christos #ifdef MSDOSFS_DEBUG 750 1.52.10.2 christos printf("msdosfs_remove(), dep %p, v_usecount %d\n", 751 1.52.10.2 christos dep, ap->a_vp->v_usecount); 752 1.52.10.2 christos #endif 753 1.52.10.2 christos VN_KNOTE(ap->a_vp, NOTE_DELETE); 754 1.52.10.2 christos VN_KNOTE(ap->a_dvp, NOTE_WRITE); 755 1.52.10.2 christos if (ddep == dep) 756 1.52.10.2 christos vrele(ap->a_vp); 757 1.52.10.2 christos else 758 1.52.10.2 christos vput(ap->a_vp); /* causes msdosfs_inactive() to be called 759 1.52.10.2 christos * via vrele() */ 760 1.52.10.2 christos vput(ap->a_dvp); 761 1.52.10.2 christos return (error); 762 1.52.10.2 christos } 763 1.52.10.2 christos 764 1.52.10.2 christos /* 765 1.52.10.2 christos * DOS filesystems don't know what links are. But since we already called 766 1.52.10.2 christos * msdosfs_lookup() with create and lockparent, the parent is locked so we 767 1.52.10.2 christos * have to free it before we return the error. 768 1.52.10.2 christos */ 769 1.52.10.2 christos int 770 1.52.10.2 christos msdosfs_link(v) 771 1.52.10.2 christos void *v; 772 1.52.10.2 christos { 773 1.52.10.2 christos struct vop_link_args /* { 774 1.52.10.2 christos struct vnode *a_dvp; 775 1.52.10.2 christos struct vnode *a_vp; 776 1.52.10.2 christos struct componentname *a_cnp; 777 1.52.10.2 christos } */ *ap = v; 778 1.52.10.2 christos 779 1.52.10.2 christos VOP_ABORTOP(ap->a_dvp, ap->a_cnp); 780 1.52.10.2 christos vput(ap->a_dvp); 781 1.52.10.2 christos return (EOPNOTSUPP); 782 1.52.10.2 christos } 783 1.52.10.2 christos 784 1.52.10.2 christos /* 785 1.52.10.2 christos * Renames on files require moving the denode to a new hash queue since the 786 1.52.10.2 christos * denode's location is used to compute which hash queue to put the file 787 1.52.10.2 christos * in. Unless it is a rename in place. For example "mv a b". 788 1.52.10.2 christos * 789 1.52.10.2 christos * What follows is the basic algorithm: 790 1.52.10.2 christos * 791 1.52.10.2 christos * if (file move) { 792 1.52.10.2 christos * if (dest file exists) { 793 1.52.10.2 christos * remove dest file 794 1.52.10.2 christos * } 795 1.52.10.2 christos * if (dest and src in same directory) { 796 1.52.10.2 christos * rewrite name in existing directory slot 797 1.52.10.2 christos * } else { 798 1.52.10.2 christos * write new entry in dest directory 799 1.52.10.2 christos * update offset and dirclust in denode 800 1.52.10.2 christos * move denode to new hash chain 801 1.52.10.2 christos * clear old directory entry 802 1.52.10.2 christos * } 803 1.52.10.2 christos * } else { 804 1.52.10.2 christos * directory move 805 1.52.10.2 christos * if (dest directory exists) { 806 1.52.10.2 christos * if (dest is not empty) { 807 1.52.10.2 christos * return ENOTEMPTY 808 1.52.10.2 christos * } 809 1.52.10.2 christos * remove dest directory 810 1.52.10.2 christos * } 811 1.52.10.2 christos * if (dest and src in same directory) { 812 1.52.10.2 christos * rewrite name in existing entry 813 1.52.10.2 christos * } else { 814 1.52.10.2 christos * be sure dest is not a child of src directory 815 1.52.10.2 christos * write entry in dest directory 816 1.52.10.2 christos * update "." and ".." in moved directory 817 1.52.10.2 christos * update offset and dirclust in denode 818 1.52.10.2 christos * move denode to new hash chain 819 1.52.10.2 christos * clear old directory entry for moved directory 820 1.52.10.2 christos * } 821 1.52.10.2 christos * } 822 1.52.10.2 christos * 823 1.52.10.2 christos * On entry: 824 1.52.10.2 christos * source's parent directory is unlocked 825 1.52.10.2 christos * source file or directory is unlocked 826 1.52.10.2 christos * destination's parent directory is locked 827 1.52.10.2 christos * destination file or directory is locked if it exists 828 1.52.10.2 christos * 829 1.52.10.2 christos * On exit: 830 1.52.10.2 christos * all denodes should be released 831 1.52.10.2 christos * 832 1.52.10.2 christos * Notes: 833 1.52.10.2 christos * I'm not sure how the memory containing the pathnames pointed at by the 834 1.52.10.2 christos * componentname structures is freed, there may be some memory bleeding 835 1.52.10.2 christos * for each rename done. 836 1.52.10.2 christos * 837 1.52.10.2 christos * --More-- Notes: 838 1.52.10.2 christos * This routine needs help. badly. 839 1.52.10.2 christos */ 840 1.52.10.2 christos int 841 1.52.10.2 christos msdosfs_rename(v) 842 1.52.10.2 christos void *v; 843 1.52.10.2 christos { 844 1.52.10.2 christos struct vop_rename_args /* { 845 1.52.10.2 christos struct vnode *a_fdvp; 846 1.52.10.2 christos struct vnode *a_fvp; 847 1.52.10.2 christos struct componentname *a_fcnp; 848 1.52.10.2 christos struct vnode *a_tdvp; 849 1.52.10.2 christos struct vnode *a_tvp; 850 1.52.10.2 christos struct componentname *a_tcnp; 851 1.52.10.2 christos } */ *ap = v; 852 1.52.10.2 christos struct vnode *tvp = ap->a_tvp; 853 1.52.10.2 christos struct vnode *tdvp = ap->a_tdvp; 854 1.52.10.2 christos struct vnode *fvp = ap->a_fvp; 855 1.52.10.2 christos struct vnode *fdvp = ap->a_fdvp; 856 1.52.10.2 christos struct componentname *tcnp = ap->a_tcnp; 857 1.52.10.2 christos struct componentname *fcnp = ap->a_fcnp; 858 1.52.10.2 christos struct denode *ip, *xp, *dp, *zp; 859 1.52.10.2 christos u_char toname[11], oldname[11]; 860 1.52.10.2 christos u_long from_diroffset, to_diroffset; 861 1.52.10.2 christos u_char to_count; 862 1.52.10.2 christos int doingdirectory = 0, newparent = 0; 863 1.52.10.2 christos int error; 864 1.52.10.2 christos u_long cn; 865 1.52.10.2 christos daddr_t bn; 866 1.52.10.2 christos struct msdosfsmount *pmp; 867 1.52.10.2 christos struct direntry *dotdotp; 868 1.52.10.2 christos struct buf *bp; 869 1.52.10.2 christos int fdvp_dorele = 0; 870 1.52.10.2 christos 871 1.52.10.2 christos pmp = VFSTOMSDOSFS(fdvp->v_mount); 872 1.52.10.2 christos 873 1.52.10.2 christos #ifdef DIAGNOSTIC 874 1.52.10.2 christos if ((tcnp->cn_flags & HASBUF) == 0 || 875 1.52.10.2 christos (fcnp->cn_flags & HASBUF) == 0) 876 1.52.10.2 christos panic("msdosfs_rename: no name"); 877 1.52.10.2 christos #endif 878 1.52.10.2 christos /* 879 1.52.10.2 christos * Check for cross-device rename. 880 1.52.10.2 christos */ 881 1.52.10.2 christos if ((fvp->v_mount != tdvp->v_mount) || 882 1.52.10.2 christos (tvp && (fvp->v_mount != tvp->v_mount))) { 883 1.52.10.2 christos error = EXDEV; 884 1.52.10.2 christos abortit: 885 1.52.10.2 christos VOP_ABORTOP(tdvp, tcnp); 886 1.52.10.2 christos if (tdvp == tvp) 887 1.52.10.2 christos vrele(tdvp); 888 1.52.10.2 christos else 889 1.52.10.2 christos vput(tdvp); 890 1.52.10.2 christos if (tvp) 891 1.52.10.2 christos vput(tvp); 892 1.52.10.2 christos VOP_ABORTOP(fdvp, fcnp); 893 1.52.10.2 christos vrele(fdvp); 894 1.52.10.2 christos vrele(fvp); 895 1.52.10.2 christos return (error); 896 1.52.10.2 christos } 897 1.52.10.2 christos 898 1.52.10.2 christos /* 899 1.52.10.2 christos * If source and dest are the same, do nothing. 900 1.52.10.2 christos */ 901 1.52.10.2 christos if (tvp == fvp) { 902 1.52.10.2 christos error = 0; 903 1.52.10.2 christos goto abortit; 904 1.52.10.2 christos } 905 1.52.10.2 christos 906 1.52.10.2 christos /* 907 1.52.10.2 christos * XXX: This can deadlock since we hold tdvp/tvp locked. 908 1.52.10.2 christos * But I'm not going to fix it now. 909 1.52.10.2 christos */ 910 1.52.10.2 christos if ((error = vn_lock(fvp, LK_EXCLUSIVE)) != 0) 911 1.52.10.2 christos goto abortit; 912 1.52.10.2 christos dp = VTODE(fdvp); 913 1.52.10.2 christos ip = VTODE(fvp); 914 1.52.10.2 christos 915 1.52.10.2 christos /* 916 1.52.10.2 christos * Be sure we are not renaming ".", "..", or an alias of ".". This 917 1.52.10.2 christos * leads to a crippled directory tree. It's pretty tough to do a 918 1.52.10.2 christos * "ls" or "pwd" with the "." directory entry missing, and "cd .." 919 1.52.10.2 christos * doesn't work if the ".." entry is missing. 920 1.52.10.2 christos */ 921 1.52.10.2 christos if (ip->de_Attributes & ATTR_DIRECTORY) { 922 1.52.10.2 christos /* 923 1.52.10.2 christos * Avoid ".", "..", and aliases of "." for obvious reasons. 924 1.52.10.2 christos */ 925 1.52.10.2 christos if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') || 926 1.52.10.2 christos dp == ip || 927 1.52.10.2 christos (fcnp->cn_flags & ISDOTDOT) || 928 1.52.10.2 christos (tcnp->cn_flags & ISDOTDOT) || 929 1.52.10.2 christos (ip->de_flag & DE_RENAME)) { 930 1.52.10.2 christos VOP_UNLOCK(fvp, 0); 931 1.52.10.2 christos error = EINVAL; 932 1.52.10.2 christos goto abortit; 933 1.52.10.2 christos } 934 1.52.10.2 christos ip->de_flag |= DE_RENAME; 935 1.52.10.2 christos doingdirectory++; 936 1.52.10.2 christos } 937 1.52.10.2 christos VN_KNOTE(fdvp, NOTE_WRITE); /* XXXLUKEM/XXX: right place? */ 938 1.52.10.2 christos 939 1.52.10.2 christos /* 940 1.52.10.2 christos * When the target exists, both the directory 941 1.52.10.2 christos * and target vnodes are returned locked. 942 1.52.10.2 christos */ 943 1.52.10.2 christos dp = VTODE(tdvp); 944 1.52.10.2 christos xp = tvp ? VTODE(tvp) : NULL; 945 1.52.10.2 christos /* 946 1.52.10.2 christos * Remember direntry place to use for destination 947 1.52.10.2 christos */ 948 1.52.10.2 christos to_diroffset = dp->de_fndoffset; 949 1.52.10.2 christos to_count = dp->de_fndcnt; 950 1.52.10.2 christos 951 1.52.10.2 christos /* 952 1.52.10.2 christos * If ".." must be changed (ie the directory gets a new 953 1.52.10.2 christos * parent) then the source directory must not be in the 954 1.52.10.2 christos * directory hierarchy above the target, as this would 955 1.52.10.2 christos * orphan everything below the source directory. Also 956 1.52.10.2 christos * the user must have write permission in the source so 957 1.52.10.2 christos * as to be able to change "..". We must repeat the call 958 1.52.10.2 christos * to namei, as the parent directory is unlocked by the 959 1.52.10.2 christos * call to doscheckpath(). 960 1.52.10.2 christos */ 961 1.52.10.2 christos error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred); 962 1.52.10.2 christos VOP_UNLOCK(fvp, 0); 963 1.52.10.2 christos if (VTODE(fdvp)->de_StartCluster != VTODE(tdvp)->de_StartCluster) 964 1.52.10.2 christos newparent = 1; 965 1.52.10.2 christos 966 1.52.10.2 christos /* 967 1.52.10.2 christos * XXX: We can do this here because rename uses SAVEFART and 968 1.52.10.2 christos * therefore fdvp has at least two references (one doesn't 969 1.52.10.2 christos * belong to us, though, and that's evil). We'll get 970 1.52.10.2 christos * another "extra" reference when we do relookup(), so we 971 1.52.10.2 christos * need to compensate. We should *NOT* be doing this, but 972 1.52.10.2 christos * it works, so whatever. 973 1.52.10.2 christos */ 974 1.52.10.2 christos vrele(fdvp); 975 1.52.10.2 christos 976 1.52.10.2 christos if (doingdirectory && newparent) { 977 1.52.10.2 christos if (error) /* write access check above */ 978 1.52.10.2 christos goto tdvpbad; 979 1.52.10.2 christos if (xp != NULL) 980 1.52.10.2 christos vput(tvp); 981 1.52.10.2 christos tvp = NULL; 982 1.52.10.2 christos /* 983 1.52.10.2 christos * doscheckpath() vput()'s dp, 984 1.52.10.2 christos * so we have to do a relookup afterwards 985 1.52.10.2 christos */ 986 1.52.10.2 christos if ((error = doscheckpath(ip, dp)) != 0) 987 1.52.10.2 christos goto out; 988 1.52.10.2 christos if ((tcnp->cn_flags & SAVESTART) == 0) 989 1.52.10.2 christos panic("msdosfs_rename: lost to startdir"); 990 1.52.10.2 christos vn_lock(tdvp, LK_EXCLUSIVE | LK_RETRY); 991 1.52.10.2 christos if ((error = relookup(tdvp, &tvp, tcnp)) != 0) { 992 1.52.10.2 christos VOP_UNLOCK(tdvp, 0); 993 1.52.10.2 christos goto out; 994 1.52.10.2 christos } 995 1.52.10.2 christos /* 996 1.52.10.2 christos * XXX: SAVESTART causes us to get a reference, but 997 1.52.10.2 christos * that's released already above in doscheckpath() 998 1.52.10.2 christos */ 999 1.52.10.2 christos dp = VTODE(tdvp); 1000 1.52.10.2 christos xp = tvp ? VTODE(tvp) : NULL; 1001 1.52.10.2 christos } 1002 1.52.10.2 christos 1003 1.52.10.2 christos if (xp != NULL) { 1004 1.52.10.2 christos /* 1005 1.52.10.2 christos * Target must be empty if a directory and have no links 1006 1.52.10.2 christos * to it. Also, ensure source and target are compatible 1007 1.52.10.2 christos * (both directories, or both not directories). 1008 1.52.10.2 christos */ 1009 1.52.10.2 christos if (xp->de_Attributes & ATTR_DIRECTORY) { 1010 1.52.10.2 christos if (!dosdirempty(xp)) { 1011 1.52.10.2 christos error = ENOTEMPTY; 1012 1.52.10.2 christos goto tdvpbad; 1013 1.52.10.2 christos } 1014 1.52.10.2 christos if (!doingdirectory) { 1015 1.52.10.2 christos error = ENOTDIR; 1016 1.52.10.2 christos goto tdvpbad; 1017 1.52.10.2 christos } 1018 1.52.10.2 christos } else if (doingdirectory) { 1019 1.52.10.2 christos error = EISDIR; 1020 1.52.10.2 christos goto tdvpbad; 1021 1.52.10.2 christos } 1022 1.52.10.2 christos if ((error = removede(dp, xp)) != 0) 1023 1.52.10.2 christos goto tdvpbad; 1024 1.52.10.2 christos VN_KNOTE(tdvp, NOTE_WRITE); 1025 1.52.10.2 christos VN_KNOTE(tvp, NOTE_DELETE); 1026 1.52.10.2 christos cache_purge(tvp); 1027 1.52.10.2 christos vput(tvp); 1028 1.52.10.2 christos tvp = NULL; 1029 1.52.10.2 christos xp = NULL; 1030 1.52.10.2 christos } 1031 1.52.10.2 christos 1032 1.52.10.2 christos /* 1033 1.52.10.2 christos * Convert the filename in tcnp into a dos filename. We copy this 1034 1.52.10.2 christos * into the denode and directory entry for the destination 1035 1.52.10.2 christos * file/directory. 1036 1.52.10.2 christos */ 1037 1.52.10.2 christos if ((error = uniqdosname(VTODE(tdvp), tcnp, toname)) != 0) 1038 1.52.10.2 christos goto abortit; 1039 1.52.10.2 christos 1040 1.52.10.2 christos /* 1041 1.52.10.2 christos * Since from wasn't locked at various places above, 1042 1.52.10.2 christos * have to do a relookup here. 1043 1.52.10.2 christos */ 1044 1.52.10.2 christos fcnp->cn_flags &= ~MODMASK; 1045 1.52.10.2 christos fcnp->cn_flags |= LOCKPARENT | LOCKLEAF; 1046 1.52.10.2 christos if ((fcnp->cn_flags & SAVESTART) == 0) 1047 1.52.10.2 christos panic("msdosfs_rename: lost from startdir"); 1048 1.52.10.2 christos VOP_UNLOCK(tdvp, 0); 1049 1.52.10.2 christos vn_lock(fdvp, LK_EXCLUSIVE | LK_RETRY); 1050 1.52.10.2 christos if ((error = relookup(fdvp, &fvp, fcnp))) { 1051 1.52.10.2 christos VOP_UNLOCK(fdvp, 0); 1052 1.52.10.2 christos vrele(ap->a_fvp); 1053 1.52.10.2 christos vrele(tdvp); 1054 1.52.10.2 christos return (error); 1055 1.52.10.2 christos } 1056 1.52.10.2 christos if (fvp == NULL) { 1057 1.52.10.2 christos /* 1058 1.52.10.2 christos * From name has disappeared. 1059 1.52.10.2 christos */ 1060 1.52.10.2 christos if (doingdirectory) 1061 1.52.10.2 christos panic("rename: lost dir entry"); 1062 1.52.10.2 christos vput(fdvp); 1063 1.52.10.2 christos vrele(ap->a_fvp); 1064 1.52.10.2 christos vrele(tdvp); 1065 1.52.10.2 christos return 0; 1066 1.52.10.2 christos } 1067 1.52.10.2 christos fdvp_dorele = 1; 1068 1.52.10.2 christos VOP_UNLOCK(fdvp, 0); 1069 1.52.10.2 christos xp = VTODE(fvp); 1070 1.52.10.2 christos zp = VTODE(fdvp); 1071 1.52.10.2 christos from_diroffset = zp->de_fndoffset; 1072 1.52.10.2 christos 1073 1.52.10.2 christos /* 1074 1.52.10.2 christos * Ensure that the directory entry still exists and has not 1075 1.52.10.2 christos * changed till now. If the source is a file the entry may 1076 1.52.10.2 christos * have been unlinked or renamed. In either case there is 1077 1.52.10.2 christos * no further work to be done. If the source is a directory 1078 1.52.10.2 christos * then it cannot have been rmdir'ed or renamed; this is 1079 1.52.10.2 christos * prohibited by the DE_RENAME flag. 1080 1.52.10.2 christos */ 1081 1.52.10.2 christos if (xp != ip) { 1082 1.52.10.2 christos if (doingdirectory) 1083 1.52.10.2 christos panic("rename: lost dir entry"); 1084 1.52.10.2 christos vrele(ap->a_fvp); 1085 1.52.10.2 christos VOP_UNLOCK(fvp, 0); 1086 1.52.10.2 christos xp = NULL; 1087 1.52.10.2 christos } else { 1088 1.52.10.2 christos vrele(fvp); 1089 1.52.10.2 christos xp = NULL; 1090 1.52.10.2 christos 1091 1.52.10.2 christos /* 1092 1.52.10.2 christos * First write a new entry in the destination 1093 1.52.10.2 christos * directory and mark the entry in the source directory 1094 1.52.10.2 christos * as deleted. Then move the denode to the correct hash 1095 1.52.10.2 christos * chain for its new location in the filesystem. And, if 1096 1.52.10.2 christos * we moved a directory, then update its .. entry to point 1097 1.52.10.2 christos * to the new parent directory. 1098 1.52.10.2 christos */ 1099 1.52.10.2 christos memcpy(oldname, ip->de_Name, 11); 1100 1.52.10.2 christos memcpy(ip->de_Name, toname, 11); /* update denode */ 1101 1.52.10.2 christos dp->de_fndoffset = to_diroffset; 1102 1.52.10.2 christos dp->de_fndcnt = to_count; 1103 1.52.10.2 christos error = createde(ip, dp, (struct denode **)0, tcnp); 1104 1.52.10.2 christos if (error) { 1105 1.52.10.2 christos memcpy(ip->de_Name, oldname, 11); 1106 1.52.10.2 christos VOP_UNLOCK(fvp, 0); 1107 1.52.10.2 christos goto bad; 1108 1.52.10.2 christos } 1109 1.52.10.2 christos ip->de_refcnt++; 1110 1.52.10.2 christos zp->de_fndoffset = from_diroffset; 1111 1.52.10.2 christos if ((error = removede(zp, ip)) != 0) { 1112 1.52.10.2 christos /* XXX should really panic here, fs is corrupt */ 1113 1.52.10.2 christos VOP_UNLOCK(fvp, 0); 1114 1.52.10.2 christos goto bad; 1115 1.52.10.2 christos } 1116 1.52.10.2 christos cache_purge(fvp); 1117 1.52.10.2 christos if (!doingdirectory) { 1118 1.52.10.2 christos error = pcbmap(dp, de_cluster(pmp, to_diroffset), 0, 1119 1.52.10.2 christos &ip->de_dirclust, 0); 1120 1.52.10.2 christos if (error) { 1121 1.52.10.2 christos /* XXX should really panic here, fs is corrupt */ 1122 1.52.10.2 christos VOP_UNLOCK(fvp, 0); 1123 1.52.10.2 christos goto bad; 1124 1.52.10.2 christos } 1125 1.52.10.2 christos ip->de_diroffset = to_diroffset; 1126 1.52.10.2 christos if (ip->de_dirclust != MSDOSFSROOT) 1127 1.52.10.2 christos ip->de_diroffset &= pmp->pm_crbomask; 1128 1.52.10.2 christos } 1129 1.52.10.2 christos reinsert(ip); 1130 1.52.10.2 christos } 1131 1.52.10.2 christos 1132 1.52.10.2 christos /* 1133 1.52.10.2 christos * If we moved a directory to a new parent directory, then we must 1134 1.52.10.2 christos * fixup the ".." entry in the moved directory. 1135 1.52.10.2 christos */ 1136 1.52.10.2 christos if (doingdirectory && newparent) { 1137 1.52.10.2 christos cn = ip->de_StartCluster; 1138 1.52.10.2 christos if (cn == MSDOSFSROOT) { 1139 1.52.10.2 christos /* this should never happen */ 1140 1.52.10.2 christos panic("msdosfs_rename: updating .. in root directory?"); 1141 1.52.10.2 christos } else 1142 1.52.10.2 christos bn = cntobn(pmp, cn); 1143 1.52.10.2 christos error = bread(pmp->pm_devvp, de_bn2kb(pmp, bn), 1144 1.52.10.2 christos pmp->pm_bpcluster, NOCRED, B_MODIFY, &bp); 1145 1.52.10.2 christos if (error) { 1146 1.52.10.2 christos /* XXX should really panic here, fs is corrupt */ 1147 1.52.10.2 christos brelse(bp, 0); 1148 1.52.10.2 christos VOP_UNLOCK(fvp, 0); 1149 1.52.10.2 christos goto bad; 1150 1.52.10.2 christos } 1151 1.52.10.2 christos dotdotp = (struct direntry *)bp->b_data + 1; 1152 1.52.10.2 christos putushort(dotdotp->deStartCluster, dp->de_StartCluster); 1153 1.52.10.2 christos if (FAT32(pmp)) { 1154 1.52.10.2 christos putushort(dotdotp->deHighClust, 1155 1.52.10.2 christos dp->de_StartCluster >> 16); 1156 1.52.10.2 christos } else { 1157 1.52.10.2 christos putushort(dotdotp->deHighClust, 0); 1158 1.52.10.2 christos } 1159 1.52.10.2 christos if ((error = bwrite(bp)) != 0) { 1160 1.52.10.2 christos /* XXX should really panic here, fs is corrupt */ 1161 1.52.10.2 christos VOP_UNLOCK(fvp, 0); 1162 1.52.10.2 christos goto bad; 1163 1.52.10.2 christos } 1164 1.52.10.2 christos } 1165 1.52.10.2 christos 1166 1.52.10.2 christos VN_KNOTE(fvp, NOTE_RENAME); 1167 1.52.10.2 christos VOP_UNLOCK(fvp, 0); 1168 1.52.10.2 christos bad: 1169 1.52.10.2 christos if (tvp) 1170 1.52.10.2 christos vput(tvp); 1171 1.52.10.2 christos vrele(tdvp); 1172 1.52.10.2 christos out: 1173 1.52.10.2 christos ip->de_flag &= ~DE_RENAME; 1174 1.52.10.2 christos if (fdvp_dorele) 1175 1.52.10.2 christos vrele(fdvp); 1176 1.52.10.2 christos vrele(fvp); 1177 1.52.10.2 christos return (error); 1178 1.52.10.2 christos 1179 1.52.10.2 christos /* XXX: uuuh */ 1180 1.52.10.2 christos tdvpbad: 1181 1.52.10.2 christos VOP_UNLOCK(tdvp, 0); 1182 1.52.10.2 christos goto bad; 1183 1.52.10.2 christos } 1184 1.52.10.2 christos 1185 1.52.10.2 christos static const struct { 1186 1.52.10.2 christos struct direntry dot; 1187 1.52.10.2 christos struct direntry dotdot; 1188 1.52.10.2 christos } dosdirtemplate = { 1189 1.52.10.2 christos { ". ", " ", /* the . entry */ 1190 1.52.10.2 christos ATTR_DIRECTORY, /* file attribute */ 1191 1.52.10.2 christos 0, /* reserved */ 1192 1.52.10.2 christos 0, { 0, 0 }, { 0, 0 }, /* create time & date */ 1193 1.52.10.2 christos { 0, 0 }, /* access date */ 1194 1.52.10.2 christos { 0, 0 }, /* high bits of start cluster */ 1195 1.52.10.2 christos { 210, 4 }, { 210, 4 }, /* modify time & date */ 1196 1.52.10.2 christos { 0, 0 }, /* startcluster */ 1197 1.52.10.2 christos { 0, 0, 0, 0 } /* filesize */ 1198 1.52.10.2 christos }, 1199 1.52.10.2 christos { ".. ", " ", /* the .. entry */ 1200 1.52.10.2 christos ATTR_DIRECTORY, /* file attribute */ 1201 1.52.10.2 christos 0, /* reserved */ 1202 1.52.10.2 christos 0, { 0, 0 }, { 0, 0 }, /* create time & date */ 1203 1.52.10.2 christos { 0, 0 }, /* access date */ 1204 1.52.10.2 christos { 0, 0 }, /* high bits of start cluster */ 1205 1.52.10.2 christos { 210, 4 }, { 210, 4 }, /* modify time & date */ 1206 1.52.10.2 christos { 0, 0 }, /* startcluster */ 1207 1.52.10.2 christos { 0, 0, 0, 0 } /* filesize */ 1208 1.52.10.2 christos } 1209 1.52.10.2 christos }; 1210 1.52.10.2 christos 1211 1.52.10.2 christos int 1212 1.52.10.2 christos msdosfs_mkdir(v) 1213 1.52.10.2 christos void *v; 1214 1.52.10.2 christos { 1215 1.52.10.2 christos struct vop_mkdir_args /* { 1216 1.52.10.2 christos struct vnode *a_dvp; 1217 1.52.10.2 christos struvt vnode **a_vpp; 1218 1.52.10.2 christos struvt componentname *a_cnp; 1219 1.52.10.2 christos struct vattr *a_vap; 1220 1.52.10.2 christos } */ *ap = v; 1221 1.52.10.2 christos struct componentname *cnp = ap->a_cnp; 1222 1.52.10.2 christos struct denode ndirent; 1223 1.52.10.2 christos struct denode *dep; 1224 1.52.10.2 christos struct denode *pdep = VTODE(ap->a_dvp); 1225 1.52.10.2 christos int error; 1226 1.52.10.2 christos int bn; 1227 1.52.10.2 christos u_long newcluster, pcl; 1228 1.52.10.2 christos daddr_t lbn; 1229 1.52.10.2 christos struct direntry *denp; 1230 1.52.10.2 christos struct msdosfsmount *pmp = pdep->de_pmp; 1231 1.52.10.2 christos struct buf *bp; 1232 1.52.10.2 christos int async = pdep->de_pmp->pm_mountp->mnt_flag & MNT_ASYNC; 1233 1.52.10.2 christos 1234 1.52.10.2 christos /* 1235 1.52.10.2 christos * If this is the root directory and there is no space left we 1236 1.52.10.2 christos * can't do anything. This is because the root directory can not 1237 1.52.10.2 christos * change size. 1238 1.52.10.2 christos */ 1239 1.52.10.2 christos if (pdep->de_StartCluster == MSDOSFSROOT 1240 1.52.10.2 christos && pdep->de_fndoffset >= pdep->de_FileSize) { 1241 1.52.10.2 christos error = ENOSPC; 1242 1.52.10.2 christos goto bad2; 1243 1.52.10.2 christos } 1244 1.52.10.2 christos 1245 1.52.10.2 christos /* 1246 1.52.10.2 christos * Allocate a cluster to hold the about to be created directory. 1247 1.52.10.2 christos */ 1248 1.52.10.2 christos error = clusteralloc(pmp, 0, 1, &newcluster, NULL); 1249 1.52.10.2 christos if (error) 1250 1.52.10.2 christos goto bad2; 1251 1.52.10.2 christos 1252 1.52.10.2 christos memset(&ndirent, 0, sizeof(ndirent)); 1253 1.52.10.2 christos ndirent.de_pmp = pmp; 1254 1.52.10.2 christos ndirent.de_flag = DE_ACCESS | DE_CREATE | DE_UPDATE; 1255 1.52.10.2 christos DETIMES(&ndirent, NULL, NULL, NULL, pmp->pm_gmtoff); 1256 1.52.10.2 christos 1257 1.52.10.2 christos /* 1258 1.52.10.2 christos * Now fill the cluster with the "." and ".." entries. And write 1259 1.52.10.2 christos * the cluster to disk. This way it is there for the parent 1260 1.52.10.2 christos * directory to be pointing at if there were a crash. 1261 1.52.10.2 christos */ 1262 1.52.10.2 christos bn = cntobn(pmp, newcluster); 1263 1.52.10.2 christos lbn = de_bn2kb(pmp, bn); 1264 1.52.10.2 christos /* always succeeds */ 1265 1.52.10.2 christos bp = getblk(pmp->pm_devvp, lbn, pmp->pm_bpcluster, 0, 0); 1266 1.52.10.2 christos memset(bp->b_data, 0, pmp->pm_bpcluster); 1267 1.52.10.2 christos memcpy(bp->b_data, &dosdirtemplate, sizeof dosdirtemplate); 1268 1.52.10.2 christos denp = (struct direntry *)bp->b_data; 1269 1.52.10.2 christos putushort(denp[0].deStartCluster, newcluster); 1270 1.52.10.2 christos putushort(denp[0].deCDate, ndirent.de_CDate); 1271 1.52.10.2 christos putushort(denp[0].deCTime, ndirent.de_CTime); 1272 1.52.10.2 christos denp[0].deCHundredth = ndirent.de_CHun; 1273 1.52.10.2 christos putushort(denp[0].deADate, ndirent.de_ADate); 1274 1.52.10.2 christos putushort(denp[0].deMDate, ndirent.de_MDate); 1275 1.52.10.2 christos putushort(denp[0].deMTime, ndirent.de_MTime); 1276 1.52.10.2 christos pcl = pdep->de_StartCluster; 1277 1.52.10.2 christos if (FAT32(pmp) && pcl == pmp->pm_rootdirblk) 1278 1.52.10.2 christos pcl = 0; 1279 1.52.10.2 christos putushort(denp[1].deStartCluster, pcl); 1280 1.52.10.2 christos putushort(denp[1].deCDate, ndirent.de_CDate); 1281 1.52.10.2 christos putushort(denp[1].deCTime, ndirent.de_CTime); 1282 1.52.10.2 christos denp[1].deCHundredth = ndirent.de_CHun; 1283 1.52.10.2 christos putushort(denp[1].deADate, ndirent.de_ADate); 1284 1.52.10.2 christos putushort(denp[1].deMDate, ndirent.de_MDate); 1285 1.52.10.2 christos putushort(denp[1].deMTime, ndirent.de_MTime); 1286 1.52.10.2 christos if (FAT32(pmp)) { 1287 1.52.10.2 christos putushort(denp[0].deHighClust, newcluster >> 16); 1288 1.52.10.2 christos putushort(denp[1].deHighClust, pdep->de_StartCluster >> 16); 1289 1.52.10.2 christos } else { 1290 1.52.10.2 christos putushort(denp[0].deHighClust, 0); 1291 1.52.10.2 christos putushort(denp[1].deHighClust, 0); 1292 1.52.10.2 christos } 1293 1.52.10.2 christos 1294 1.52.10.2 christos if (async) 1295 1.52.10.2 christos bdwrite(bp); 1296 1.52.10.2 christos else if ((error = bwrite(bp)) != 0) 1297 1.52.10.2 christos goto bad; 1298 1.52.10.2 christos 1299 1.52.10.2 christos /* 1300 1.52.10.2 christos * Now build up a directory entry pointing to the newly allocated 1301 1.52.10.2 christos * cluster. This will be written to an empty slot in the parent 1302 1.52.10.2 christos * directory. 1303 1.52.10.2 christos */ 1304 1.52.10.2 christos #ifdef DIAGNOSTIC 1305 1.52.10.2 christos if ((cnp->cn_flags & HASBUF) == 0) 1306 1.52.10.2 christos panic("msdosfs_mkdir: no name"); 1307 1.52.10.2 christos #endif 1308 1.52.10.2 christos if ((error = uniqdosname(pdep, cnp, ndirent.de_Name)) != 0) 1309 1.52.10.2 christos goto bad; 1310 1.52.10.2 christos 1311 1.52.10.2 christos ndirent.de_Attributes = ATTR_DIRECTORY; 1312 1.52.10.2 christos ndirent.de_StartCluster = newcluster; 1313 1.52.10.2 christos ndirent.de_FileSize = 0; 1314 1.52.10.2 christos ndirent.de_dev = pdep->de_dev; 1315 1.52.10.2 christos ndirent.de_devvp = pdep->de_devvp; 1316 1.52.10.2 christos if ((error = createde(&ndirent, pdep, &dep, cnp)) != 0) 1317 1.52.10.2 christos goto bad; 1318 1.52.10.2 christos if ((cnp->cn_flags & SAVESTART) == 0) 1319 1.52.10.2 christos PNBUF_PUT(cnp->cn_pnbuf); 1320 1.52.10.2 christos VN_KNOTE(ap->a_dvp, NOTE_WRITE | NOTE_LINK); 1321 1.52.10.2 christos vput(ap->a_dvp); 1322 1.52.10.2 christos *ap->a_vpp = DETOV(dep); 1323 1.52.10.2 christos return (0); 1324 1.52.10.2 christos 1325 1.52.10.2 christos bad: 1326 1.52.10.2 christos clusterfree(pmp, newcluster, NULL); 1327 1.52.10.2 christos bad2: 1328 1.52.10.2 christos PNBUF_PUT(cnp->cn_pnbuf); 1329 1.52.10.2 christos vput(ap->a_dvp); 1330 1.52.10.2 christos return (error); 1331 1.52.10.2 christos } 1332 1.52.10.2 christos 1333 1.52.10.2 christos int 1334 1.52.10.2 christos msdosfs_rmdir(v) 1335 1.52.10.2 christos void *v; 1336 1.52.10.2 christos { 1337 1.52.10.2 christos struct vop_rmdir_args /* { 1338 1.52.10.2 christos struct vnode *a_dvp; 1339 1.52.10.2 christos struct vnode *a_vp; 1340 1.52.10.2 christos struct componentname *a_cnp; 1341 1.52.10.2 christos } */ *ap = v; 1342 1.52.10.2 christos struct vnode *vp = ap->a_vp; 1343 1.52.10.2 christos struct vnode *dvp = ap->a_dvp; 1344 1.52.10.2 christos struct componentname *cnp = ap->a_cnp; 1345 1.52.10.2 christos struct denode *ip, *dp; 1346 1.52.10.2 christos int error; 1347 1.52.10.2 christos 1348 1.52.10.2 christos ip = VTODE(vp); 1349 1.52.10.2 christos dp = VTODE(dvp); 1350 1.52.10.2 christos /* 1351 1.52.10.2 christos * No rmdir "." please. 1352 1.52.10.2 christos */ 1353 1.52.10.2 christos if (dp == ip) { 1354 1.52.10.2 christos vrele(dvp); 1355 1.52.10.2 christos vput(vp); 1356 1.52.10.2 christos return (EINVAL); 1357 1.52.10.2 christos } 1358 1.52.10.2 christos /* 1359 1.52.10.2 christos * Verify the directory is empty (and valid). 1360 1.52.10.2 christos * (Rmdir ".." won't be valid since 1361 1.52.10.2 christos * ".." will contain a reference to 1362 1.52.10.2 christos * the current directory and thus be 1363 1.52.10.2 christos * non-empty.) 1364 1.52.10.2 christos */ 1365 1.52.10.2 christos error = 0; 1366 1.52.10.2 christos if (!dosdirempty(ip) || ip->de_flag & DE_RENAME) { 1367 1.52.10.2 christos error = ENOTEMPTY; 1368 1.52.10.2 christos goto out; 1369 1.52.10.2 christos } 1370 1.52.10.2 christos /* 1371 1.52.10.2 christos * Delete the entry from the directory. For dos filesystems this 1372 1.52.10.2 christos * gets rid of the directory entry on disk, the in memory copy 1373 1.52.10.2 christos * still exists but the de_refcnt is <= 0. This prevents it from 1374 1.52.10.2 christos * being found by deget(). When the vput() on dep is done we give 1375 1.52.10.2 christos * up access and eventually msdosfs_reclaim() will be called which 1376 1.52.10.2 christos * will remove it from the denode cache. 1377 1.52.10.2 christos */ 1378 1.52.10.2 christos if ((error = removede(dp, ip)) != 0) 1379 1.52.10.2 christos goto out; 1380 1.52.10.2 christos /* 1381 1.52.10.2 christos * This is where we decrement the link count in the parent 1382 1.52.10.2 christos * directory. Since dos filesystems don't do this we just purge 1383 1.52.10.2 christos * the name cache and let go of the parent directory denode. 1384 1.52.10.2 christos */ 1385 1.52.10.2 christos VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); 1386 1.52.10.2 christos cache_purge(dvp); 1387 1.52.10.2 christos vput(dvp); 1388 1.52.10.2 christos dvp = NULL; 1389 1.52.10.2 christos /* 1390 1.52.10.2 christos * Truncate the directory that is being deleted. 1391 1.52.10.2 christos */ 1392 1.52.10.2 christos error = detrunc(ip, (u_long)0, IO_SYNC, cnp->cn_cred); 1393 1.52.10.2 christos cache_purge(vp); 1394 1.52.10.2 christos out: 1395 1.52.10.2 christos VN_KNOTE(vp, NOTE_DELETE); 1396 1.52.10.2 christos if (dvp) 1397 1.52.10.2 christos vput(dvp); 1398 1.52.10.2 christos vput(vp); 1399 1.52.10.2 christos return (error); 1400 1.52.10.2 christos } 1401 1.52.10.2 christos 1402 1.52.10.2 christos /* 1403 1.52.10.2 christos * DOS filesystems don't know what symlinks are. 1404 1.52.10.2 christos */ 1405 1.52.10.2 christos int 1406 1.52.10.2 christos msdosfs_symlink(v) 1407 1.52.10.2 christos void *v; 1408 1.52.10.2 christos { 1409 1.52.10.2 christos struct vop_symlink_args /* { 1410 1.52.10.2 christos struct vnode *a_dvp; 1411 1.52.10.2 christos struct vnode **a_vpp; 1412 1.52.10.2 christos struct componentname *a_cnp; 1413 1.52.10.2 christos struct vattr *a_vap; 1414 1.52.10.2 christos char *a_target; 1415 1.52.10.2 christos } */ *ap = v; 1416 1.52.10.2 christos 1417 1.52.10.2 christos VOP_ABORTOP(ap->a_dvp, ap->a_cnp); 1418 1.52.10.2 christos vput(ap->a_dvp); 1419 1.52.10.2 christos return (EOPNOTSUPP); 1420 1.52.10.2 christos } 1421 1.52.10.2 christos 1422 1.52.10.2 christos int 1423 1.52.10.2 christos msdosfs_readdir(v) 1424 1.52.10.2 christos void *v; 1425 1.52.10.2 christos { 1426 1.52.10.2 christos struct vop_readdir_args /* { 1427 1.52.10.2 christos struct vnode *a_vp; 1428 1.52.10.2 christos struct uio *a_uio; 1429 1.52.10.2 christos kauth_cred_t a_cred; 1430 1.52.10.2 christos int *a_eofflag; 1431 1.52.10.2 christos off_t **a_cookies; 1432 1.52.10.2 christos int *a_ncookies; 1433 1.52.10.2 christos } */ *ap = v; 1434 1.52.10.2 christos int error = 0; 1435 1.52.10.2 christos int diff; 1436 1.52.10.2 christos long n; 1437 1.52.10.2 christos int blsize; 1438 1.52.10.2 christos long on; 1439 1.52.10.2 christos long lost; 1440 1.52.10.2 christos long count; 1441 1.52.10.2 christos u_long cn; 1442 1.52.10.2 christos ino_t fileno; 1443 1.52.10.2 christos u_long dirsperblk; 1444 1.52.10.2 christos long bias = 0; 1445 1.52.10.2 christos daddr_t bn, lbn; 1446 1.52.10.2 christos struct buf *bp; 1447 1.52.10.2 christos struct denode *dep = VTODE(ap->a_vp); 1448 1.52.10.2 christos struct msdosfsmount *pmp = dep->de_pmp; 1449 1.52.10.2 christos struct direntry *dentp; 1450 1.52.10.2 christos struct dirent *dirbuf; 1451 1.52.10.2 christos struct uio *uio = ap->a_uio; 1452 1.52.10.2 christos off_t *cookies = NULL; 1453 1.52.10.2 christos int ncookies = 0, nc = 0; 1454 1.52.10.2 christos off_t offset, uio_off; 1455 1.52.10.2 christos int chksum = -1; 1456 1.52.10.2 christos 1457 1.52.10.2 christos #ifdef MSDOSFS_DEBUG 1458 1.52.10.2 christos printf("msdosfs_readdir(): vp %p, uio %p, cred %p, eofflagp %p\n", 1459 1.52.10.2 christos ap->a_vp, uio, ap->a_cred, ap->a_eofflag); 1460 1.52.10.2 christos #endif 1461 1.52.10.2 christos 1462 1.52.10.2 christos /* 1463 1.52.10.2 christos * msdosfs_readdir() won't operate properly on regular files since 1464 1.52.10.2 christos * it does i/o only with the filesystem vnode, and hence can 1465 1.52.10.2 christos * retrieve the wrong block from the buffer cache for a plain file. 1466 1.52.10.2 christos * So, fail attempts to readdir() on a plain file. 1467 1.52.10.2 christos */ 1468 1.52.10.2 christos if ((dep->de_Attributes & ATTR_DIRECTORY) == 0) 1469 1.52.10.2 christos return (ENOTDIR); 1470 1.52.10.2 christos 1471 1.52.10.2 christos /* 1472 1.52.10.2 christos * If the user buffer is smaller than the size of one dos directory 1473 1.52.10.2 christos * entry or the file offset is not a multiple of the size of a 1474 1.52.10.2 christos * directory entry, then we fail the read. 1475 1.52.10.2 christos */ 1476 1.52.10.2 christos count = uio->uio_resid & ~(sizeof(struct direntry) - 1); 1477 1.52.10.2 christos offset = uio->uio_offset; 1478 1.52.10.2 christos if (count < sizeof(struct direntry) || 1479 1.52.10.2 christos (offset & (sizeof(struct direntry) - 1))) 1480 1.52.10.2 christos return (EINVAL); 1481 1.52.10.2 christos lost = uio->uio_resid - count; 1482 1.52.10.2 christos uio->uio_resid = count; 1483 1.52.10.2 christos uio_off = uio->uio_offset; 1484 1.52.10.2 christos 1485 1.52.10.2 christos /* Allocate a temporary dirent buffer. */ 1486 1.52.10.2 christos dirbuf = malloc(sizeof(struct dirent), M_MSDOSFSTMP, M_WAITOK | M_ZERO); 1487 1.52.10.2 christos 1488 1.52.10.2 christos if (ap->a_ncookies) { 1489 1.52.10.2 christos nc = uio->uio_resid / _DIRENT_MINSIZE((struct dirent *)0); 1490 1.52.10.2 christos cookies = malloc(nc * sizeof (off_t), M_TEMP, M_WAITOK); 1491 1.52.10.2 christos *ap->a_cookies = cookies; 1492 1.52.10.2 christos } 1493 1.52.10.2 christos 1494 1.52.10.2 christos dirsperblk = pmp->pm_BytesPerSec / sizeof(struct direntry); 1495 1.52.10.2 christos 1496 1.52.10.2 christos /* 1497 1.52.10.2 christos * If they are reading from the root directory then, we simulate 1498 1.52.10.2 christos * the . and .. entries since these don't exist in the root 1499 1.52.10.2 christos * directory. We also set the offset bias to make up for having to 1500 1.52.10.2 christos * simulate these entries. By this I mean that at file offset 64 we 1501 1.52.10.2 christos * read the first entry in the root directory that lives on disk. 1502 1.52.10.2 christos */ 1503 1.52.10.2 christos if (dep->de_StartCluster == MSDOSFSROOT 1504 1.52.10.2 christos || (FAT32(pmp) && dep->de_StartCluster == pmp->pm_rootdirblk)) { 1505 1.52.10.2 christos #if 0 1506 1.52.10.2 christos printf("msdosfs_readdir(): going after . or .. in root dir, " 1507 1.52.10.2 christos "offset %" PRIu64 "\n", offset); 1508 1.52.10.2 christos #endif 1509 1.52.10.2 christos bias = 2 * sizeof(struct direntry); 1510 1.52.10.2 christos if (offset < bias) { 1511 1.52.10.2 christos for (n = (int)offset / sizeof(struct direntry); 1512 1.52.10.2 christos n < 2; n++) { 1513 1.52.10.2 christos if (FAT32(pmp)) 1514 1.52.10.2 christos dirbuf->d_fileno = cntobn(pmp, 1515 1.52.10.2 christos (ino_t)pmp->pm_rootdirblk) 1516 1.52.10.2 christos * dirsperblk; 1517 1.52.10.2 christos else 1518 1.52.10.2 christos dirbuf->d_fileno = 1; 1519 1.52.10.2 christos dirbuf->d_type = DT_DIR; 1520 1.52.10.2 christos switch (n) { 1521 1.52.10.2 christos case 0: 1522 1.52.10.2 christos dirbuf->d_namlen = 1; 1523 1.52.10.2 christos strlcpy(dirbuf->d_name, ".", 1524 1.52.10.2 christos sizeof(dirbuf->d_name)); 1525 1.52.10.2 christos break; 1526 1.52.10.2 christos case 1: 1527 1.52.10.2 christos dirbuf->d_namlen = 2; 1528 1.52.10.2 christos strlcpy(dirbuf->d_name, "..", 1529 1.52.10.2 christos sizeof(dirbuf->d_name)); 1530 1.52.10.2 christos break; 1531 1.52.10.2 christos } 1532 1.52.10.2 christos dirbuf->d_reclen = _DIRENT_SIZE(dirbuf); 1533 1.52.10.2 christos if (uio->uio_resid < dirbuf->d_reclen) 1534 1.52.10.2 christos goto out; 1535 1.52.10.2 christos error = uiomove(dirbuf, dirbuf->d_reclen, uio); 1536 1.52.10.2 christos if (error) 1537 1.52.10.2 christos goto out; 1538 1.52.10.2 christos offset += sizeof(struct direntry); 1539 1.52.10.2 christos uio_off = offset; 1540 1.52.10.2 christos if (cookies) { 1541 1.52.10.2 christos *cookies++ = offset; 1542 1.52.10.2 christos ncookies++; 1543 1.52.10.2 christos if (ncookies >= nc) 1544 1.52.10.2 christos goto out; 1545 1.52.10.2 christos } 1546 1.52.10.2 christos } 1547 1.52.10.2 christos } 1548 1.52.10.2 christos } 1549 1.52.10.2 christos 1550 1.52.10.2 christos while (uio->uio_resid > 0) { 1551 1.52.10.2 christos lbn = de_cluster(pmp, offset - bias); 1552 1.52.10.2 christos on = (offset - bias) & pmp->pm_crbomask; 1553 1.52.10.2 christos n = MIN(pmp->pm_bpcluster - on, uio->uio_resid); 1554 1.52.10.2 christos diff = dep->de_FileSize - (offset - bias); 1555 1.52.10.2 christos if (diff <= 0) 1556 1.52.10.2 christos break; 1557 1.52.10.2 christos n = MIN(n, diff); 1558 1.52.10.2 christos if ((error = pcbmap(dep, lbn, &bn, &cn, &blsize)) != 0) 1559 1.52.10.2 christos break; 1560 1.52.10.2 christos error = bread(pmp->pm_devvp, de_bn2kb(pmp, bn), blsize, 1561 1.52.10.2 christos NOCRED, 0, &bp); 1562 1.52.10.2 christos if (error) { 1563 1.52.10.2 christos brelse(bp, 0); 1564 1.52.10.2 christos free(dirbuf, M_MSDOSFSTMP); 1565 1.52.10.2 christos return (error); 1566 1.52.10.2 christos } 1567 1.52.10.2 christos n = MIN(n, blsize - bp->b_resid); 1568 1.52.10.2 christos 1569 1.52.10.2 christos /* 1570 1.52.10.2 christos * Convert from dos directory entries to fs-independent 1571 1.52.10.2 christos * directory entries. 1572 1.52.10.2 christos */ 1573 1.52.10.2 christos for (dentp = (struct direntry *)((char *)bp->b_data + on); 1574 1.52.10.2 christos (char *)dentp < (char *)bp->b_data + on + n; 1575 1.52.10.2 christos dentp++, offset += sizeof(struct direntry)) { 1576 1.52.10.2 christos #if 0 1577 1.52.10.2 christos 1578 1.52.10.2 christos printf("rd: dentp %08x prev %08x crnt %08x deName %02x attr %02x\n", 1579 1.52.10.2 christos dentp, prev, crnt, dentp->deName[0], dentp->deAttributes); 1580 1.52.10.2 christos #endif 1581 1.52.10.2 christos /* 1582 1.52.10.2 christos * If this is an unused entry, we can stop. 1583 1.52.10.2 christos */ 1584 1.52.10.2 christos if (dentp->deName[0] == SLOT_EMPTY) { 1585 1.52.10.2 christos brelse(bp, 0); 1586 1.52.10.2 christos goto out; 1587 1.52.10.2 christos } 1588 1.52.10.2 christos /* 1589 1.52.10.2 christos * Skip deleted entries. 1590 1.52.10.2 christos */ 1591 1.52.10.2 christos if (dentp->deName[0] == SLOT_DELETED) { 1592 1.52.10.2 christos chksum = -1; 1593 1.52.10.2 christos continue; 1594 1.52.10.2 christos } 1595 1.52.10.2 christos 1596 1.52.10.2 christos /* 1597 1.52.10.2 christos * Handle Win95 long directory entries 1598 1.52.10.2 christos */ 1599 1.52.10.2 christos if (dentp->deAttributes == ATTR_WIN95) { 1600 1.52.10.2 christos if (pmp->pm_flags & MSDOSFSMNT_SHORTNAME) 1601 1.52.10.2 christos continue; 1602 1.52.10.2 christos chksum = win2unixfn((struct winentry *)dentp, 1603 1.52.10.2 christos dirbuf, chksum); 1604 1.52.10.2 christos continue; 1605 1.52.10.2 christos } 1606 1.52.10.2 christos 1607 1.52.10.2 christos /* 1608 1.52.10.2 christos * Skip volume labels 1609 1.52.10.2 christos */ 1610 1.52.10.2 christos if (dentp->deAttributes & ATTR_VOLUME) { 1611 1.52.10.2 christos chksum = -1; 1612 1.52.10.2 christos continue; 1613 1.52.10.2 christos } 1614 1.52.10.2 christos /* 1615 1.52.10.2 christos * This computation of d_fileno must match 1616 1.52.10.2 christos * the computation of va_fileid in 1617 1.52.10.2 christos * msdosfs_getattr. 1618 1.52.10.2 christos */ 1619 1.52.10.2 christos if (dentp->deAttributes & ATTR_DIRECTORY) { 1620 1.52.10.2 christos fileno = getushort(dentp->deStartCluster); 1621 1.52.10.2 christos if (FAT32(pmp)) 1622 1.52.10.2 christos fileno |= ((ino_t)getushort(dentp->deHighClust)) << 16; 1623 1.52.10.2 christos /* if this is the root directory */ 1624 1.52.10.2 christos if (fileno == MSDOSFSROOT) 1625 1.52.10.2 christos if (FAT32(pmp)) 1626 1.52.10.2 christos fileno = cntobn(pmp, 1627 1.52.10.2 christos (ino_t)pmp->pm_rootdirblk) 1628 1.52.10.2 christos * dirsperblk; 1629 1.52.10.2 christos else 1630 1.52.10.2 christos fileno = 1; 1631 1.52.10.2 christos else 1632 1.52.10.2 christos fileno = cntobn(pmp, fileno) * dirsperblk; 1633 1.52.10.2 christos dirbuf->d_fileno = fileno; 1634 1.52.10.2 christos dirbuf->d_type = DT_DIR; 1635 1.52.10.2 christos } else { 1636 1.52.10.2 christos dirbuf->d_fileno = 1637 1.52.10.2 christos offset / sizeof(struct direntry); 1638 1.52.10.2 christos dirbuf->d_type = DT_REG; 1639 1.52.10.2 christos } 1640 1.52.10.2 christos if (chksum != winChksum(dentp->deName)) 1641 1.52.10.2 christos dirbuf->d_namlen = dos2unixfn(dentp->deName, 1642 1.52.10.2 christos (u_char *)dirbuf->d_name, 1643 1.52.10.2 christos pmp->pm_flags & MSDOSFSMNT_SHORTNAME); 1644 1.52.10.2 christos else 1645 1.52.10.2 christos dirbuf->d_name[dirbuf->d_namlen] = 0; 1646 1.52.10.2 christos chksum = -1; 1647 1.52.10.2 christos dirbuf->d_reclen = _DIRENT_SIZE(dirbuf); 1648 1.52.10.2 christos if (uio->uio_resid < dirbuf->d_reclen) { 1649 1.52.10.2 christos brelse(bp, 0); 1650 1.52.10.2 christos goto out; 1651 1.52.10.2 christos } 1652 1.52.10.2 christos error = uiomove(dirbuf, dirbuf->d_reclen, uio); 1653 1.52.10.2 christos if (error) { 1654 1.52.10.2 christos brelse(bp, 0); 1655 1.52.10.2 christos goto out; 1656 1.52.10.2 christos } 1657 1.52.10.2 christos uio_off = offset + sizeof(struct direntry); 1658 1.52.10.2 christos if (cookies) { 1659 1.52.10.2 christos *cookies++ = offset + sizeof(struct direntry); 1660 1.52.10.2 christos ncookies++; 1661 1.52.10.2 christos if (ncookies >= nc) { 1662 1.52.10.2 christos brelse(bp, 0); 1663 1.52.10.2 christos goto out; 1664 1.52.10.2 christos } 1665 1.52.10.2 christos } 1666 1.52.10.2 christos } 1667 1.52.10.2 christos brelse(bp, 0); 1668 1.52.10.2 christos } 1669 1.52.10.2 christos 1670 1.52.10.2 christos out: 1671 1.52.10.2 christos uio->uio_offset = uio_off; 1672 1.52.10.2 christos uio->uio_resid += lost; 1673 1.52.10.2 christos if (dep->de_FileSize - (offset - bias) <= 0) 1674 1.52.10.2 christos *ap->a_eofflag = 1; 1675 1.52.10.2 christos else 1676 1.52.10.2 christos *ap->a_eofflag = 0; 1677 1.52.10.2 christos 1678 1.52.10.2 christos if (ap->a_ncookies) { 1679 1.52.10.2 christos if (error) { 1680 1.52.10.2 christos free(*ap->a_cookies, M_TEMP); 1681 1.52.10.2 christos *ap->a_ncookies = 0; 1682 1.52.10.2 christos *ap->a_cookies = NULL; 1683 1.52.10.2 christos } else 1684 1.52.10.2 christos *ap->a_ncookies = ncookies; 1685 1.52.10.2 christos } 1686 1.52.10.2 christos free(dirbuf, M_MSDOSFSTMP); 1687 1.52.10.2 christos return (error); 1688 1.52.10.2 christos } 1689 1.52.10.2 christos 1690 1.52.10.2 christos /* 1691 1.52.10.2 christos * DOS filesystems don't know what symlinks are. 1692 1.52.10.2 christos */ 1693 1.52.10.2 christos int 1694 1.52.10.2 christos msdosfs_readlink(void *v) 1695 1.52.10.2 christos { 1696 1.52.10.2 christos #if 0 1697 1.52.10.2 christos struct vop_readlink_args /* { 1698 1.52.10.2 christos struct vnode *a_vp; 1699 1.52.10.2 christos struct uio *a_uio; 1700 1.52.10.2 christos kauth_cred_t a_cred; 1701 1.52.10.2 christos } */ *ap; 1702 1.52.10.2 christos #endif 1703 1.52.10.2 christos 1704 1.52.10.2 christos return (EINVAL); 1705 1.52.10.2 christos } 1706 1.52.10.2 christos 1707 1.52.10.2 christos /* 1708 1.52.10.2 christos * vp - address of vnode file the file 1709 1.52.10.2 christos * bn - which cluster we are interested in mapping to a filesystem block number. 1710 1.52.10.2 christos * vpp - returns the vnode for the block special file holding the filesystem 1711 1.52.10.2 christos * containing the file of interest 1712 1.52.10.2 christos * bnp - address of where to return the filesystem relative block number 1713 1.52.10.2 christos */ 1714 1.52.10.2 christos int 1715 1.52.10.2 christos msdosfs_bmap(v) 1716 1.52.10.2 christos void *v; 1717 1.52.10.2 christos { 1718 1.52.10.2 christos struct vop_bmap_args /* { 1719 1.52.10.2 christos struct vnode *a_vp; 1720 1.52.10.2 christos daddr_t a_bn; 1721 1.52.10.2 christos struct vnode **a_vpp; 1722 1.52.10.2 christos daddr_t *a_bnp; 1723 1.52.10.2 christos int *a_runp; 1724 1.52.10.2 christos } */ *ap = v; 1725 1.52.10.2 christos struct denode *dep = VTODE(ap->a_vp); 1726 1.52.10.2 christos int run, maxrun; 1727 1.52.10.2 christos daddr_t runbn; 1728 1.52.10.2 christos int status; 1729 1.52.10.2 christos 1730 1.52.10.2 christos if (ap->a_vpp != NULL) 1731 1.52.10.2 christos *ap->a_vpp = dep->de_devvp; 1732 1.52.10.2 christos if (ap->a_bnp == NULL) 1733 1.52.10.2 christos return (0); 1734 1.52.10.2 christos status = pcbmap(dep, ap->a_bn, ap->a_bnp, 0, 0); 1735 1.52.10.2 christos 1736 1.52.10.2 christos /* 1737 1.52.10.2 christos * From FreeBSD: 1738 1.52.10.2 christos * A little kludgy, but we loop calling pcbmap until we 1739 1.52.10.2 christos * reach the end of the contiguous piece, or reach MAXPHYS. 1740 1.52.10.2 christos * Since it reduces disk I/Os, the "wasted" CPU is put to 1741 1.52.10.2 christos * good use (4 to 5 fold sequential read I/O improvement on USB 1742 1.52.10.2 christos * drives). 1743 1.52.10.2 christos */ 1744 1.52.10.2 christos if (ap->a_runp != NULL) { 1745 1.52.10.2 christos /* taken from ufs_bmap */ 1746 1.52.10.2 christos maxrun = ulmin(MAXPHYS / dep->de_pmp->pm_bpcluster - 1, 1747 1.52.10.2 christos dep->de_pmp->pm_maxcluster - ap->a_bn); 1748 1.52.10.2 christos for (run = 1; run <= maxrun; run++) { 1749 1.52.10.2 christos if (pcbmap(dep, ap->a_bn + run, &runbn, NULL, NULL) 1750 1.52.10.2 christos != 0 || runbn != 1751 1.52.10.2 christos *ap->a_bnp + de_cn2bn(dep->de_pmp, run)) 1752 1.52.10.2 christos break; 1753 1.52.10.2 christos } 1754 1.52.10.2 christos *ap->a_runp = run - 1; 1755 1.52.10.2 christos } 1756 1.52.10.2 christos 1757 1.52.10.2 christos /* 1758 1.52.10.2 christos * We need to scale *ap->a_bnp by sector_size/DEV_BSIZE 1759 1.52.10.2 christos */ 1760 1.52.10.2 christos *ap->a_bnp = de_bn2kb(dep->de_pmp, *ap->a_bnp); 1761 1.52.10.2 christos return status; 1762 1.52.10.2 christos } 1763 1.52.10.2 christos 1764 1.52.10.2 christos int 1765 1.52.10.2 christos msdosfs_strategy(v) 1766 1.52.10.2 christos void *v; 1767 1.52.10.2 christos { 1768 1.52.10.2 christos struct vop_strategy_args /* { 1769 1.52.10.2 christos struct vnode *a_vp; 1770 1.52.10.2 christos struct buf *a_bp; 1771 1.52.10.2 christos } */ *ap = v; 1772 1.52.10.2 christos struct vnode *vp = ap->a_vp; 1773 1.52.10.2 christos struct buf *bp = ap->a_bp; 1774 1.52.10.2 christos struct denode *dep = VTODE(bp->b_vp); 1775 1.52.10.2 christos int error = 0; 1776 1.52.10.2 christos 1777 1.52.10.2 christos if (vp->v_type == VBLK || vp->v_type == VCHR) 1778 1.52.10.2 christos panic("msdosfs_strategy: spec"); 1779 1.52.10.2 christos /* 1780 1.52.10.2 christos * If we don't already know the filesystem relative block number 1781 1.52.10.2 christos * then get it using pcbmap(). If pcbmap() returns the block 1782 1.52.10.2 christos * number as -1 then we've got a hole in the file. DOS filesystems 1783 1.52.10.2 christos * don't allow files with holes, so we shouldn't ever see this. 1784 1.52.10.2 christos */ 1785 1.52.10.2 christos if (bp->b_blkno == bp->b_lblkno) { 1786 1.52.10.2 christos error = pcbmap(dep, de_bn2cn(dep->de_pmp, bp->b_lblkno), 1787 1.52.10.2 christos &bp->b_blkno, 0, 0); 1788 1.52.10.2 christos if (error) 1789 1.52.10.2 christos bp->b_blkno = -1; 1790 1.52.10.2 christos if (bp->b_blkno == -1) 1791 1.52.10.2 christos clrbuf(bp); 1792 1.52.10.2 christos else 1793 1.52.10.2 christos bp->b_blkno = de_bn2kb(dep->de_pmp, bp->b_blkno); 1794 1.52.10.2 christos } 1795 1.52.10.2 christos if (bp->b_blkno == -1) { 1796 1.52.10.2 christos biodone(bp); 1797 1.52.10.2 christos return (error); 1798 1.52.10.2 christos } 1799 1.52.10.2 christos 1800 1.52.10.2 christos /* 1801 1.52.10.2 christos * Read/write the block from/to the disk that contains the desired 1802 1.52.10.2 christos * file block. 1803 1.52.10.2 christos */ 1804 1.52.10.2 christos 1805 1.52.10.2 christos vp = dep->de_devvp; 1806 1.52.10.2 christos return (VOP_STRATEGY(vp, bp)); 1807 1.52.10.2 christos } 1808 1.52.10.2 christos 1809 1.52.10.2 christos int 1810 1.52.10.2 christos msdosfs_print(v) 1811 1.52.10.2 christos void *v; 1812 1.52.10.2 christos { 1813 1.52.10.2 christos struct vop_print_args /* { 1814 1.52.10.2 christos struct vnode *vp; 1815 1.52.10.2 christos } */ *ap = v; 1816 1.52.10.2 christos struct denode *dep = VTODE(ap->a_vp); 1817 1.52.10.2 christos 1818 1.52.10.2 christos printf( 1819 1.52.10.2 christos "tag VT_MSDOSFS, startcluster %ld, dircluster %ld, diroffset %ld ", 1820 1.52.10.2 christos dep->de_StartCluster, dep->de_dirclust, dep->de_diroffset); 1821 1.52.10.2 christos printf(" dev %llu, %llu ", (unsigned long long)major(dep->de_dev), 1822 1.52.10.2 christos (unsigned long long)minor(dep->de_dev)); 1823 1.52.10.2 christos printf("\n"); 1824 1.52.10.2 christos return (0); 1825 1.52.10.2 christos } 1826 1.52.10.2 christos 1827 1.52.10.2 christos int 1828 1.52.10.2 christos msdosfs_advlock(v) 1829 1.52.10.2 christos void *v; 1830 1.52.10.2 christos { 1831 1.52.10.2 christos struct vop_advlock_args /* { 1832 1.52.10.2 christos struct vnode *a_vp; 1833 1.52.10.2 christos void *a_id; 1834 1.52.10.2 christos int a_op; 1835 1.52.10.2 christos struct flock *a_fl; 1836 1.52.10.2 christos int a_flags; 1837 1.52.10.2 christos } */ *ap = v; 1838 1.52.10.2 christos struct denode *dep = VTODE(ap->a_vp); 1839 1.52.10.2 christos 1840 1.52.10.2 christos return lf_advlock(ap, &dep->de_lockf, dep->de_FileSize); 1841 1.52.10.2 christos } 1842 1.52.10.2 christos 1843 1.52.10.2 christos int 1844 1.52.10.2 christos msdosfs_pathconf(v) 1845 1.52.10.2 christos void *v; 1846 1.52.10.2 christos { 1847 1.52.10.2 christos struct vop_pathconf_args /* { 1848 1.52.10.2 christos struct vnode *a_vp; 1849 1.52.10.2 christos int a_name; 1850 1.52.10.2 christos register_t *a_retval; 1851 1.52.10.2 christos } */ *ap = v; 1852 1.52.10.2 christos 1853 1.52.10.2 christos switch (ap->a_name) { 1854 1.52.10.2 christos case _PC_LINK_MAX: 1855 1.52.10.2 christos *ap->a_retval = 1; 1856 1.52.10.2 christos return (0); 1857 1.52.10.2 christos case _PC_NAME_MAX: 1858 1.52.10.2 christos *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_namemax; 1859 1.52.10.2 christos return (0); 1860 1.52.10.2 christos case _PC_PATH_MAX: 1861 1.52.10.2 christos *ap->a_retval = PATH_MAX; 1862 1.52.10.2 christos return (0); 1863 1.52.10.2 christos case _PC_CHOWN_RESTRICTED: 1864 1.52.10.2 christos *ap->a_retval = 1; 1865 1.52.10.2 christos return (0); 1866 1.52.10.2 christos case _PC_NO_TRUNC: 1867 1.52.10.2 christos *ap->a_retval = 0; 1868 1.52.10.2 christos return (0); 1869 1.52.10.2 christos case _PC_SYNC_IO: 1870 1.52.10.2 christos *ap->a_retval = 1; 1871 1.52.10.2 christos return (0); 1872 1.52.10.2 christos case _PC_FILESIZEBITS: 1873 1.52.10.2 christos *ap->a_retval = 32; 1874 1.52.10.2 christos return (0); 1875 1.52.10.2 christos default: 1876 1.52.10.2 christos return (EINVAL); 1877 1.52.10.2 christos } 1878 1.52.10.2 christos /* NOTREACHED */ 1879 1.52.10.2 christos } 1880 1.52.10.2 christos 1881 1.52.10.2 christos int 1882 1.52.10.2 christos msdosfs_fsync(v) 1883 1.52.10.2 christos void *v; 1884 1.52.10.2 christos { 1885 1.52.10.2 christos struct vop_fsync_args /* { 1886 1.52.10.2 christos struct vnode *a_vp; 1887 1.52.10.2 christos kauth_cred_t a_cred; 1888 1.52.10.2 christos int a_flags; 1889 1.52.10.2 christos off_t offlo; 1890 1.52.10.2 christos off_t offhi; 1891 1.52.10.2 christos } */ *ap = v; 1892 1.52.10.2 christos struct vnode *vp = ap->a_vp; 1893 1.52.10.2 christos int wait; 1894 1.52.10.2 christos int error; 1895 1.52.10.2 christos 1896 1.52.10.2 christos wait = (ap->a_flags & FSYNC_WAIT) != 0; 1897 1.52.10.2 christos vflushbuf(vp, wait); 1898 1.52.10.2 christos if ((ap->a_flags & FSYNC_DATAONLY) != 0) 1899 1.52.10.2 christos error = 0; 1900 1.52.10.2 christos else 1901 1.52.10.2 christos error = msdosfs_update(vp, NULL, NULL, wait ? UPDATE_WAIT : 0); 1902 1.52.10.2 christos 1903 1.52.10.2 christos if (error == 0 && ap->a_flags & FSYNC_CACHE) { 1904 1.52.10.2 christos struct denode *dep = VTODE(vp); 1905 1.52.10.2 christos struct vnode *devvp = dep->de_devvp; 1906 1.52.10.2 christos 1907 1.52.10.2 christos int l = 0; 1908 1.52.10.2 christos error = VOP_IOCTL(devvp, DIOCCACHESYNC, &l, FWRITE, 1909 1.52.10.2 christos curlwp->l_cred); 1910 1.52.10.2 christos } 1911 1.52.10.2 christos 1912 1.52.10.2 christos return (error); 1913 1.52.10.2 christos } 1914 1.52.10.2 christos 1915 1.52.10.2 christos void 1916 1.52.10.2 christos msdosfs_detimes(struct denode *dep, const struct timespec *acc, 1917 1.52.10.2 christos const struct timespec *mod, const struct timespec *cre, int gmtoff) 1918 1.52.10.2 christos { 1919 1.52.10.2 christos struct timespec *ts = NULL, tsb; 1920 1.52.10.2 christos 1921 1.52.10.2 christos KASSERT(dep->de_flag & (DE_UPDATE | DE_CREATE | DE_ACCESS)); 1922 1.52.10.2 christos /* XXX just call getnanotime early and use result if needed? */ 1923 1.52.10.2 christos dep->de_flag |= DE_MODIFIED; 1924 1.52.10.2 christos if (dep->de_flag & DE_UPDATE) { 1925 1.52.10.2 christos if (mod == NULL) { 1926 1.52.10.2 christos getnanotime(&tsb); 1927 1.52.10.2 christos mod = ts = &tsb; 1928 1.52.10.2 christos } 1929 1.52.10.2 christos unix2dostime(mod, gmtoff, &dep->de_MDate, &dep->de_MTime, NULL); 1930 1.52.10.2 christos dep->de_Attributes |= ATTR_ARCHIVE; 1931 1.52.10.2 christos } 1932 1.52.10.2 christos if ((dep->de_pmp->pm_flags & MSDOSFSMNT_NOWIN95) == 0) { 1933 1.52.10.2 christos if (dep->de_flag & DE_ACCESS) { 1934 1.52.10.2 christos if (acc == NULL) 1935 1.52.10.2 christos acc = ts == NULL ? 1936 1.52.10.2 christos (getnanotime(&tsb), ts = &tsb) : ts; 1937 1.52.10.2 christos unix2dostime(acc, gmtoff, &dep->de_ADate, NULL, NULL); 1938 1.52.10.2 christos } 1939 1.52.10.2 christos if (dep->de_flag & DE_CREATE) { 1940 1.52.10.2 christos if (cre == NULL) 1941 1.52.10.2 christos cre = ts == NULL ? 1942 1.52.10.2 christos (getnanotime(&tsb), ts = &tsb) : ts; 1943 1.52.10.2 christos unix2dostime(cre, gmtoff, &dep->de_CDate, 1944 1.52.10.2 christos &dep->de_CTime, &dep->de_CHun); 1945 1.52.10.2 christos } 1946 1.52.10.2 christos } 1947 1.52.10.2 christos 1948 1.52.10.2 christos dep->de_flag &= ~(DE_UPDATE | DE_CREATE | DE_ACCESS); 1949 1.52.10.2 christos } 1950 1.52.10.2 christos 1951 1.52.10.2 christos /* Global vfs data structures for msdosfs */ 1952 1.52.10.2 christos int (**msdosfs_vnodeop_p)(void *); 1953 1.52.10.2 christos const struct vnodeopv_entry_desc msdosfs_vnodeop_entries[] = { 1954 1.52.10.2 christos { &vop_default_desc, vn_default_error }, 1955 1.52.10.2 christos { &vop_lookup_desc, msdosfs_lookup }, /* lookup */ 1956 1.52.10.2 christos { &vop_create_desc, msdosfs_create }, /* create */ 1957 1.52.10.2 christos { &vop_mknod_desc, msdosfs_mknod }, /* mknod */ 1958 1.52.10.2 christos { &vop_open_desc, msdosfs_open }, /* open */ 1959 1.52.10.2 christos { &vop_close_desc, msdosfs_close }, /* close */ 1960 1.52.10.2 christos { &vop_access_desc, msdosfs_access }, /* access */ 1961 1.52.10.2 christos { &vop_getattr_desc, msdosfs_getattr }, /* getattr */ 1962 1.52.10.2 christos { &vop_setattr_desc, msdosfs_setattr }, /* setattr */ 1963 1.52.10.2 christos { &vop_read_desc, msdosfs_read }, /* read */ 1964 1.52.10.2 christos { &vop_write_desc, msdosfs_write }, /* write */ 1965 1.52.10.2 christos { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 1966 1.52.10.2 christos { &vop_ioctl_desc, msdosfs_ioctl }, /* ioctl */ 1967 1.52.10.2 christos { &vop_poll_desc, msdosfs_poll }, /* poll */ 1968 1.52.10.2 christos { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 1969 1.52.10.2 christos { &vop_revoke_desc, msdosfs_revoke }, /* revoke */ 1970 1.52.10.2 christos { &vop_mmap_desc, msdosfs_mmap }, /* mmap */ 1971 1.52.10.2 christos { &vop_fsync_desc, msdosfs_fsync }, /* fsync */ 1972 1.52.10.2 christos { &vop_seek_desc, msdosfs_seek }, /* seek */ 1973 1.52.10.2 christos { &vop_remove_desc, msdosfs_remove }, /* remove */ 1974 1.52.10.2 christos { &vop_link_desc, msdosfs_link }, /* link */ 1975 1.52.10.2 christos { &vop_rename_desc, msdosfs_rename }, /* rename */ 1976 1.52.10.2 christos { &vop_mkdir_desc, msdosfs_mkdir }, /* mkdir */ 1977 1.52.10.2 christos { &vop_rmdir_desc, msdosfs_rmdir }, /* rmdir */ 1978 1.52.10.2 christos { &vop_symlink_desc, msdosfs_symlink }, /* symlink */ 1979 1.52.10.2 christos { &vop_readdir_desc, msdosfs_readdir }, /* readdir */ 1980 1.52.10.2 christos { &vop_readlink_desc, msdosfs_readlink }, /* readlink */ 1981 1.52.10.2 christos { &vop_abortop_desc, msdosfs_abortop }, /* abortop */ 1982 1.52.10.2 christos { &vop_inactive_desc, msdosfs_inactive }, /* inactive */ 1983 1.52.10.2 christos { &vop_reclaim_desc, msdosfs_reclaim }, /* reclaim */ 1984 1.52.10.2 christos { &vop_lock_desc, genfs_lock }, /* lock */ 1985 1.52.10.2 christos { &vop_unlock_desc, genfs_unlock }, /* unlock */ 1986 1.52.10.2 christos { &vop_bmap_desc, msdosfs_bmap }, /* bmap */ 1987 1.52.10.2 christos { &vop_strategy_desc, msdosfs_strategy }, /* strategy */ 1988 1.52.10.2 christos { &vop_print_desc, msdosfs_print }, /* print */ 1989 1.52.10.2 christos { &vop_islocked_desc, genfs_islocked }, /* islocked */ 1990 1.52.10.2 christos { &vop_pathconf_desc, msdosfs_pathconf }, /* pathconf */ 1991 1.52.10.2 christos { &vop_advlock_desc, msdosfs_advlock }, /* advlock */ 1992 1.52.10.2 christos { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 1993 1.52.10.2 christos { &vop_getpages_desc, genfs_getpages }, /* getpages */ 1994 1.52.10.2 christos { &vop_putpages_desc, genfs_putpages }, /* putpages */ 1995 1.52.10.2 christos { NULL, NULL } 1996 1.52.10.2 christos }; 1997 1.52.10.2 christos const struct vnodeopv_desc msdosfs_vnodeop_opv_desc = 1998 1.52.10.2 christos { &msdosfs_vnodeop_p, msdosfs_vnodeop_entries }; 1999
Indexes created Mon Oct 27 04:09:48 GMT 2025