Annotation of src/sys/fs/msdosfs/msdosfs_vnops.c, Revision 1.26.4.2
1.26.4.2! elad 1: /* $NetBSD: msdosfs_vnops.c,v 1.26.4.1 2006/03/08 01:31:33 elad Exp $ */
1.1 jdolecek 2:
3: /*-
4: * Copyright (C) 1994, 1995, 1997 Wolfgang Solfrank.
5: * Copyright (C) 1994, 1995, 1997 TooLs GmbH.
6: * All rights reserved.
7: * Original code by Paul Popelka (paulp@uts.amdahl.com) (see below).
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
17: * 3. All advertising materials mentioning features or use of this software
18: * must display the following acknowledgement:
19: * This product includes software developed by TooLs GmbH.
20: * 4. The name of TooLs GmbH may not be used to endorse or promote products
21: * derived from this software without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
24: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26: * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
29: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
31: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33: */
34: /*
35: * Written by Paul Popelka (paulp@uts.amdahl.com)
36: *
37: * You can do anything you want with this software, just don't say you wrote
38: * it, and don't remove this notice.
39: *
40: * This software is provided "as is".
41: *
42: * The author supplies this software to be publicly redistributed on the
43: * understanding that the author is not responsible for the correct
44: * functioning of this software in any circumstances and is not liable for
45: * any damages caused by this software.
46: *
47: * October 1992
48: */
49:
50: #include <sys/cdefs.h>
1.26.4.2! elad 51: __KERNEL_RCSID(0, "$NetBSD: msdosfs_vnops.c,v 1.26.4.1 2006/03/08 01:31:33 elad Exp $");
1.1 jdolecek 52:
53: #include <sys/param.h>
54: #include <sys/systm.h>
55: #include <sys/namei.h>
56: #include <sys/resourcevar.h> /* defines plimit structure in proc struct */
57: #include <sys/kernel.h>
58: #include <sys/file.h> /* define FWRITE ... */
59: #include <sys/stat.h>
60: #include <sys/buf.h>
61: #include <sys/proc.h>
62: #include <sys/mount.h>
63: #include <sys/vnode.h>
64: #include <sys/signalvar.h>
65: #include <sys/malloc.h>
66: #include <sys/dirent.h>
67: #include <sys/lockf.h>
68:
69: #include <miscfs/genfs/genfs.h>
70: #include <miscfs/specfs/specdev.h> /* XXX */ /* defines v_rdev */
71:
72: #include <uvm/uvm_extern.h>
73:
74: #include <fs/msdosfs/bpb.h>
75: #include <fs/msdosfs/direntry.h>
76: #include <fs/msdosfs/denode.h>
77: #include <fs/msdosfs/msdosfsmount.h>
78: #include <fs/msdosfs/fat.h>
79:
80: /*
81: * Some general notes:
82: *
83: * In the ufs filesystem the inodes, superblocks, and indirect blocks are
84: * read/written using the vnode for the filesystem. Blocks that represent
85: * the contents of a file are read/written using the vnode for the file
86: * (including directories when they are read/written as files). This
87: * presents problems for the dos filesystem because data that should be in
88: * an inode (if dos had them) resides in the directory itself. Since we
89: * must update directory entries without the benefit of having the vnode
90: * for the directory we must use the vnode for the filesystem. This means
91: * that when a directory is actually read/written (via read, write, or
92: * readdir, or seek) we must use the vnode for the filesystem instead of
93: * the vnode for the directory as would happen in ufs. This is to insure we
94: * retrieve the correct block from the buffer cache since the hash value is
95: * based upon the vnode address and the desired block number.
96: */
97:
98: /*
99: * Create a regular file. On entry the directory to contain the file being
100: * created is locked. We must release before we return. We must also free
101: * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or
102: * only if the SAVESTART bit in cn_flags is clear on success.
103: */
104: int
105: msdosfs_create(v)
106: void *v;
107: {
108: struct vop_create_args /* {
109: struct vnode *a_dvp;
110: struct vnode **a_vpp;
111: struct componentname *a_cnp;
112: struct vattr *a_vap;
113: } */ *ap = v;
114: struct componentname *cnp = ap->a_cnp;
115: struct denode ndirent;
116: struct denode *dep;
117: struct denode *pdep = VTODE(ap->a_dvp);
118: int error;
119:
120: #ifdef MSDOSFS_DEBUG
121: printf("msdosfs_create(cnp %p, vap %p\n", cnp, ap->a_vap);
122: #endif
123:
124: /*
125: * If this is the root directory and there is no space left we
126: * can't do anything. This is because the root directory can not
127: * change size.
128: */
129: if (pdep->de_StartCluster == MSDOSFSROOT
130: && pdep->de_fndoffset >= pdep->de_FileSize) {
131: error = ENOSPC;
132: goto bad;
133: }
134:
135: /*
136: * Create a directory entry for the file, then call createde() to
137: * have it installed. NOTE: DOS files are always executable. We
138: * use the absence of the owner write bit to make the file
139: * readonly.
140: */
141: #ifdef DIAGNOSTIC
142: if ((cnp->cn_flags & HASBUF) == 0)
143: panic("msdosfs_create: no name");
144: #endif
145: memset(&ndirent, 0, sizeof(ndirent));
146: if ((error = uniqdosname(pdep, cnp, ndirent.de_Name)) != 0)
147: goto bad;
148:
149: ndirent.de_Attributes = (ap->a_vap->va_mode & S_IWUSR) ?
150: ATTR_ARCHIVE : ATTR_ARCHIVE | ATTR_READONLY;
151: ndirent.de_StartCluster = 0;
152: ndirent.de_FileSize = 0;
153: ndirent.de_dev = pdep->de_dev;
154: ndirent.de_devvp = pdep->de_devvp;
155: ndirent.de_pmp = pdep->de_pmp;
156: ndirent.de_flag = DE_ACCESS | DE_CREATE | DE_UPDATE;
1.20 christos 157: DETIMES(&ndirent, NULL, NULL, NULL, pdep->de_pmp->pm_gmtoff);
1.1 jdolecek 158: if ((error = createde(&ndirent, pdep, &dep, cnp)) != 0)
159: goto bad;
160: if ((cnp->cn_flags & SAVESTART) == 0)
161: PNBUF_PUT(cnp->cn_pnbuf);
162: VN_KNOTE(ap->a_dvp, NOTE_WRITE);
163: vput(ap->a_dvp);
164: *ap->a_vpp = DETOV(dep);
165: return (0);
166:
167: bad:
168: PNBUF_PUT(cnp->cn_pnbuf);
169: vput(ap->a_dvp);
170: return (error);
171: }
172:
173: int
174: msdosfs_mknod(v)
175: void *v;
176: {
177: struct vop_mknod_args /* {
178: struct vnode *a_dvp;
179: struct vnode **a_vpp;
180: struct componentname *a_cnp;
181: struct vattr *a_vap;
182: } */ *ap = v;
183:
184: PNBUF_PUT(ap->a_cnp->cn_pnbuf);
185: vput(ap->a_dvp);
186: return (EINVAL);
187: }
188:
189: int
190: msdosfs_open(v)
191: void *v;
192: {
193: #if 0
194: struct vop_open_args /* {
195: struct vnode *a_vp;
196: int a_mode;
1.26.4.1 elad 197: kauth_cred_t a_cred;
1.24 christos 198: struct lwp *a_l;
1.1 jdolecek 199: } */ *ap;
200: #endif
201:
202: return (0);
203: }
204:
205: int
206: msdosfs_close(v)
207: void *v;
208: {
209: struct vop_close_args /* {
210: struct vnode *a_vp;
211: int a_fflag;
1.26.4.1 elad 212: kauth_cred_t a_cred;
1.24 christos 213: struct lwp *a_l;
1.1 jdolecek 214: } */ *ap = v;
215: struct vnode *vp = ap->a_vp;
216: struct denode *dep = VTODE(vp);
217:
218: simple_lock(&vp->v_interlock);
1.20 christos 219: if (vp->v_usecount > 1)
220: DETIMES(dep, NULL, NULL, NULL, dep->de_pmp->pm_gmtoff);
1.1 jdolecek 221: simple_unlock(&vp->v_interlock);
222: return (0);
223: }
224:
225: int
226: msdosfs_access(v)
227: void *v;
228: {
229: struct vop_access_args /* {
230: struct vnode *a_vp;
231: int a_mode;
1.26.4.1 elad 232: kauth_cred_t a_cred;
1.24 christos 233: struct lwp *a_l;
1.1 jdolecek 234: } */ *ap = v;
235: struct vnode *vp = ap->a_vp;
236: struct denode *dep = VTODE(vp);
237: struct msdosfsmount *pmp = dep->de_pmp;
238: mode_t mode = ap->a_mode;
239:
240: /*
241: * Disallow write attempts on read-only file systems;
242: * unless the file is a socket, fifo, or a block or
243: * character device resident on the file system.
244: */
245: if (mode & VWRITE) {
246: switch (vp->v_type) {
247: case VDIR:
248: case VLNK:
249: case VREG:
250: if (vp->v_mount->mnt_flag & MNT_RDONLY)
251: return (EROFS);
252: default:
253: break;
254: }
255: }
256:
257: if ((dep->de_Attributes & ATTR_READONLY) == 0)
258: mode = S_IRWXU|S_IRWXG|S_IRWXO;
259: else
260: mode = S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH;
1.6 jdolecek 261: return (vaccess(ap->a_vp->v_type,
262: mode & (vp->v_type == VDIR ? pmp->pm_dirmask : pmp->pm_mask),
1.1 jdolecek 263: pmp->pm_uid, pmp->pm_gid, ap->a_mode, ap->a_cred));
264: }
265:
266: int
267: msdosfs_getattr(v)
268: void *v;
269: {
270: struct vop_getattr_args /* {
271: struct vnode *a_vp;
272: struct vattr *a_vap;
1.26.4.1 elad 273: kauth_cred_t a_cred;
1.24 christos 274: struct lwp *a_l;
1.1 jdolecek 275: } */ *ap = v;
276: struct denode *dep = VTODE(ap->a_vp);
277: struct msdosfsmount *pmp = dep->de_pmp;
278: struct vattr *vap = ap->a_vap;
279: mode_t mode;
280: u_long dirsperblk = pmp->pm_BytesPerSec / sizeof(struct direntry);
1.19 christos 281: ino_t fileid;
1.1 jdolecek 282:
1.20 christos 283: DETIMES(dep, NULL, NULL, NULL, pmp->pm_gmtoff);
1.1 jdolecek 284: vap->va_fsid = dep->de_dev;
285: /*
286: * The following computation of the fileid must be the same as that
287: * used in msdosfs_readdir() to compute d_fileno. If not, pwd
288: * doesn't work.
289: */
290: if (dep->de_Attributes & ATTR_DIRECTORY) {
1.19 christos 291: fileid = cntobn(pmp, (ino_t)dep->de_StartCluster) * dirsperblk;
1.1 jdolecek 292: if (dep->de_StartCluster == MSDOSFSROOT)
293: fileid = 1;
294: } else {
1.19 christos 295: fileid = cntobn(pmp, (ino_t)dep->de_dirclust) * dirsperblk;
1.1 jdolecek 296: if (dep->de_dirclust == MSDOSFSROOT)
297: fileid = roottobn(pmp, 0) * dirsperblk;
298: fileid += dep->de_diroffset / sizeof(struct direntry);
299: }
300: vap->va_fileid = fileid;
301: if ((dep->de_Attributes & ATTR_READONLY) == 0)
302: mode = S_IRWXU|S_IRWXG|S_IRWXO;
303: else
304: mode = S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH;
1.6 jdolecek 305: vap->va_mode =
306: mode & (ap->a_vp->v_type == VDIR ? pmp->pm_dirmask : pmp->pm_mask);
1.1 jdolecek 307: vap->va_uid = pmp->pm_uid;
308: vap->va_gid = pmp->pm_gid;
309: vap->va_nlink = 1;
310: vap->va_rdev = 0;
311: vap->va_size = ap->a_vp->v_size;
1.7 itojun 312: dos2unixtime(dep->de_MDate, dep->de_MTime, 0, pmp->pm_gmtoff,
313: &vap->va_mtime);
1.1 jdolecek 314: if (dep->de_pmp->pm_flags & MSDOSFSMNT_LONGNAME) {
1.7 itojun 315: dos2unixtime(dep->de_ADate, 0, 0, pmp->pm_gmtoff,
316: &vap->va_atime);
317: dos2unixtime(dep->de_CDate, dep->de_CTime, dep->de_CHun,
318: pmp->pm_gmtoff, &vap->va_ctime);
1.1 jdolecek 319: } else {
320: vap->va_atime = vap->va_mtime;
321: vap->va_ctime = vap->va_mtime;
322: }
323: vap->va_flags = 0;
324: if ((dep->de_Attributes & ATTR_ARCHIVE) == 0)
325: vap->va_mode |= S_ARCH1;
326: vap->va_gen = 0;
327: vap->va_blocksize = pmp->pm_bpcluster;
328: vap->va_bytes =
329: (dep->de_FileSize + pmp->pm_crbomask) & ~pmp->pm_crbomask;
330: vap->va_type = ap->a_vp->v_type;
331: return (0);
332: }
333:
334: int
335: msdosfs_setattr(v)
336: void *v;
337: {
338: struct vop_setattr_args /* {
339: struct vnode *a_vp;
340: struct vattr *a_vap;
1.26.4.1 elad 341: kauth_cred_t a_cred;
1.24 christos 342: struct lwp *a_l;
1.1 jdolecek 343: } */ *ap = v;
344: int error = 0, de_changed = 0;
345: struct denode *dep = VTODE(ap->a_vp);
346: struct msdosfsmount *pmp = dep->de_pmp;
347: struct vnode *vp = ap->a_vp;
348: struct vattr *vap = ap->a_vap;
1.26.4.1 elad 349: kauth_cred_t cred = ap->a_cred;
1.1 jdolecek 350:
351: #ifdef MSDOSFS_DEBUG
352: printf("msdosfs_setattr(): vp %p, vap %p, cred %p, p %p\n",
1.24 christos 353: ap->a_vp, vap, cred, ap->a_l);
1.1 jdolecek 354: #endif
355: /*
356: * Note we silently ignore uid or gid changes.
357: */
358: if ((vap->va_type != VNON) || (vap->va_nlink != (nlink_t)VNOVAL) ||
359: (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
360: (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) ||
361: (vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL) ||
1.14 perry 362: (vap->va_uid != VNOVAL && vap->va_uid != pmp->pm_uid) ||
1.1 jdolecek 363: (vap->va_gid != VNOVAL && vap->va_gid != pmp->pm_gid)) {
364: #ifdef MSDOSFS_DEBUG
365: printf("msdosfs_setattr(): returning EINVAL\n");
1.16 christos 366: printf(" va_type %d, va_nlink %x, va_fsid %lx, va_fileid %llx\n",
367: vap->va_type, vap->va_nlink, vap->va_fsid,
368: (unsigned long long)vap->va_fileid);
1.1 jdolecek 369: printf(" va_blocksize %lx, va_rdev %x, va_bytes %qx, va_gen %lx\n",
370: vap->va_blocksize, vap->va_rdev, (long long)vap->va_bytes, vap->va_gen);
371: #endif
372: return (EINVAL);
373: }
374: /*
375: * Silently ignore attributes modifications on directories.
376: */
377: if (ap->a_vp->v_type == VDIR)
378: return 0;
379:
380: if (vap->va_size != VNOVAL) {
381: if (vp->v_mount->mnt_flag & MNT_RDONLY)
382: return (EROFS);
1.24 christos 383: error = detrunc(dep, (u_long)vap->va_size, 0, cred, ap->a_l);
1.1 jdolecek 384: if (error)
385: return (error);
386: de_changed = 1;
387: }
388: if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
389: if (vp->v_mount->mnt_flag & MNT_RDONLY)
390: return (EROFS);
1.26.4.1 elad 391: if (kauth_cred_geteuid(cred) != pmp->pm_uid &&
1.26.4.2! elad 392: (error = kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER,
1.26.4.1 elad 393: &ap->a_l->l_proc->p_acflag)) &&
1.1 jdolecek 394: ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
1.24 christos 395: (error = VOP_ACCESS(ap->a_vp, VWRITE, cred, ap->a_l))))
1.1 jdolecek 396: return (error);
397: if ((pmp->pm_flags & MSDOSFSMNT_NOWIN95) == 0 &&
398: vap->va_atime.tv_sec != VNOVAL)
1.7 itojun 399: unix2dostime(&vap->va_atime, pmp->pm_gmtoff, &dep->de_ADate, NULL, NULL);
1.1 jdolecek 400: if (vap->va_mtime.tv_sec != VNOVAL)
1.7 itojun 401: unix2dostime(&vap->va_mtime, pmp->pm_gmtoff, &dep->de_MDate, &dep->de_MTime, NULL);
1.1 jdolecek 402: dep->de_Attributes |= ATTR_ARCHIVE;
403: dep->de_flag |= DE_MODIFIED;
404: de_changed = 1;
405: }
406: /*
407: * DOS files only have the ability to have their writability
408: * attribute set, so we use the owner write bit to set the readonly
409: * attribute.
410: */
411: if (vap->va_mode != (mode_t)VNOVAL) {
412: if (vp->v_mount->mnt_flag & MNT_RDONLY)
413: return (EROFS);
1.26.4.1 elad 414: if (kauth_cred_geteuid(cred) != pmp->pm_uid &&
1.26.4.2! elad 415: (error = kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER,
1.26.4.1 elad 416: &ap->a_l->l_proc->p_acflag)))
1.1 jdolecek 417: return (error);
418: /* We ignore the read and execute bits. */
419: if (vap->va_mode & S_IWUSR)
420: dep->de_Attributes &= ~ATTR_READONLY;
421: else
422: dep->de_Attributes |= ATTR_READONLY;
423: dep->de_flag |= DE_MODIFIED;
424: de_changed = 1;
425: }
426: /*
427: * Allow the `archived' bit to be toggled.
428: */
429: if (vap->va_flags != VNOVAL) {
430: if (vp->v_mount->mnt_flag & MNT_RDONLY)
431: return (EROFS);
1.26.4.1 elad 432: if (kauth_cred_geteuid(cred) != pmp->pm_uid &&
1.26.4.2! elad 433: (error = kauth_authorize_generic(cred, KAUTH_GENERIC_ISSUSER,
1.26.4.1 elad 434: &ap->a_l->l_proc->p_acflag)))
1.1 jdolecek 435: return (error);
436: if (vap->va_flags & SF_ARCHIVED)
437: dep->de_Attributes &= ~ATTR_ARCHIVE;
438: else
439: dep->de_Attributes |= ATTR_ARCHIVE;
440: dep->de_flag |= DE_MODIFIED;
441: de_changed = 1;
442: }
443:
444: if (de_changed) {
445: VN_KNOTE(vp, NOTE_ATTRIB);
446: return (deupdat(dep, 1));
447: } else
448: return (0);
449: }
450:
451: int
452: msdosfs_read(v)
453: void *v;
454: {
455: struct vop_read_args /* {
456: struct vnode *a_vp;
457: struct uio *a_uio;
458: int a_ioflag;
1.26.4.1 elad 459: kauth_cred_t a_cred;
1.1 jdolecek 460: } */ *ap = v;
1.13 chs 461: int error = 0, flags;
1.1 jdolecek 462: int64_t diff;
463: int blsize;
464: long n;
465: long on;
466: daddr_t lbn;
467: void *win;
468: vsize_t bytelen;
469: struct buf *bp;
470: struct vnode *vp = ap->a_vp;
471: struct denode *dep = VTODE(vp);
472: struct msdosfsmount *pmp = dep->de_pmp;
473: struct uio *uio = ap->a_uio;
474:
475: /*
476: * If they didn't ask for any data, then we are done.
477: */
478:
479: if (uio->uio_resid == 0)
480: return (0);
481: if (uio->uio_offset < 0)
482: return (EINVAL);
483: if (uio->uio_offset >= dep->de_FileSize)
484: return (0);
485:
486: if (vp->v_type == VREG) {
1.23 yamt 487: const int advice = IO_ADV_DECODE(ap->a_ioflag);
488:
1.1 jdolecek 489: while (uio->uio_resid > 0) {
490: bytelen = MIN(dep->de_FileSize - uio->uio_offset,
491: uio->uio_resid);
492:
493: if (bytelen == 0)
494: break;
495: win = ubc_alloc(&vp->v_uobj, uio->uio_offset,
1.23 yamt 496: &bytelen, advice, UBC_READ);
1.1 jdolecek 497: error = uiomove(win, bytelen, uio);
1.13 chs 498: flags = UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0;
499: ubc_release(win, flags);
1.1 jdolecek 500: if (error)
501: break;
502: }
503: dep->de_flag |= DE_ACCESS;
504: goto out;
505: }
506:
507: /* this loop is only for directories now */
508: do {
509: lbn = de_cluster(pmp, uio->uio_offset);
510: on = uio->uio_offset & pmp->pm_crbomask;
511: n = MIN(pmp->pm_bpcluster - on, uio->uio_resid);
512: if (uio->uio_offset >= dep->de_FileSize)
513: return (0);
514: /* file size (and hence diff) may be up to 4GB */
515: diff = dep->de_FileSize - uio->uio_offset;
516: if (diff < n)
517: n = (long) diff;
518:
519: /* convert cluster # to block # */
520: error = pcbmap(dep, lbn, &lbn, 0, &blsize);
521: if (error)
522: return (error);
523:
524: /*
525: * If we are operating on a directory file then be sure to
526: * do i/o with the vnode for the filesystem instead of the
527: * vnode for the directory.
528: */
529: error = bread(pmp->pm_devvp, lbn, blsize, NOCRED, &bp);
530: n = MIN(n, pmp->pm_bpcluster - bp->b_resid);
531: if (error) {
532: brelse(bp);
533: return (error);
534: }
535: error = uiomove(bp->b_data + on, (int) n, uio);
536: brelse(bp);
537: } while (error == 0 && uio->uio_resid > 0 && n != 0);
1.14 perry 538:
1.1 jdolecek 539: out:
540: if ((ap->a_ioflag & IO_SYNC) == IO_SYNC)
541: error = deupdat(dep, 1);
542: return (error);
543: }
544:
545: /*
546: * Write data to a file or directory.
547: */
548: int
549: msdosfs_write(v)
550: void *v;
551: {
552: struct vop_write_args /* {
553: struct vnode *a_vp;
554: struct uio *a_uio;
555: int a_ioflag;
1.26.4.1 elad 556: kauth_cred_t a_cred;
1.1 jdolecek 557: } */ *ap = v;
1.13 chs 558: int resid, flags, extended = 0;
559: int error = 0;
560: int ioflag = ap->a_ioflag;
1.1 jdolecek 561: u_long osize;
562: u_long count;
563: void *win;
564: vsize_t bytelen;
565: off_t oldoff;
566: struct uio *uio = ap->a_uio;
1.26 yamt 567: struct proc *p = curproc;
1.1 jdolecek 568: struct vnode *vp = ap->a_vp;
569: struct denode *dep = VTODE(vp);
570: struct msdosfsmount *pmp = dep->de_pmp;
1.26.4.1 elad 571: kauth_cred_t cred = ap->a_cred;
1.1 jdolecek 572: boolean_t async;
573:
574: #ifdef MSDOSFS_DEBUG
575: printf("msdosfs_write(vp %p, uio %p, ioflag %x, cred %p\n",
576: vp, uio, ioflag, cred);
577: printf("msdosfs_write(): diroff %lu, dirclust %lu, startcluster %lu\n",
578: dep->de_diroffset, dep->de_dirclust, dep->de_StartCluster);
579: #endif
580:
581: switch (vp->v_type) {
582: case VREG:
583: if (ioflag & IO_APPEND)
584: uio->uio_offset = dep->de_FileSize;
585: break;
586: case VDIR:
587: return EISDIR;
588: default:
589: panic("msdosfs_write(): bad file type");
590: }
591:
592: if (uio->uio_offset < 0)
593: return (EINVAL);
594:
595: if (uio->uio_resid == 0)
596: return (0);
597:
1.17 xtraeme 598: /* Don't bother to try to write files larger than the fs limit */
599: if (uio->uio_offset + uio->uio_resid > MSDOSFS_FILESIZE_MAX)
600: return (EFBIG);
601:
1.1 jdolecek 602: /*
603: * If they've exceeded their filesize limit, tell them about it.
604: */
1.26 yamt 605: if (((uio->uio_offset + uio->uio_resid) >
1.1 jdolecek 606: p->p_rlimit[RLIMIT_FSIZE].rlim_cur)) {
607: psignal(p, SIGXFSZ);
608: return (EFBIG);
609: }
610:
611: /*
612: * If the offset we are starting the write at is beyond the end of
613: * the file, then they've done a seek. Unix filesystems allow
614: * files with holes in them, DOS doesn't so we must fill the hole
615: * with zeroed blocks.
616: */
617: if (uio->uio_offset > dep->de_FileSize) {
618: if ((error = deextend(dep, uio->uio_offset, cred)) != 0)
619: return (error);
620: }
621:
622: /*
623: * Remember some values in case the write fails.
624: */
625: async = vp->v_mount->mnt_flag & MNT_ASYNC;
626: resid = uio->uio_resid;
627: osize = dep->de_FileSize;
628:
629: /*
630: * If we write beyond the end of the file, extend it to its ultimate
631: * size ahead of the time to hopefully get a contiguous area.
632: */
633: if (uio->uio_offset + resid > osize) {
634: count = de_clcount(pmp, uio->uio_offset + resid) -
635: de_clcount(pmp, osize);
636: if ((error = extendfile(dep, count, NULL, NULL, 0)) &&
637: (error != ENOSPC || (ioflag & IO_UNIT)))
638: goto errexit;
639: }
640:
641: if (dep->de_FileSize < uio->uio_offset + resid) {
642: dep->de_FileSize = uio->uio_offset + resid;
643: uvm_vnp_setsize(vp, dep->de_FileSize);
644: extended = 1;
645: }
646:
647: do {
648: oldoff = uio->uio_offset;
649: bytelen = uio->uio_resid;
650:
1.23 yamt 651: win = ubc_alloc(&vp->v_uobj, oldoff, &bytelen, UVM_ADV_NORMAL,
652: UBC_WRITE);
1.1 jdolecek 653: error = uiomove(win, bytelen, uio);
1.13 chs 654: flags = UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0;
655: ubc_release(win, flags);
1.1 jdolecek 656: if (error) {
657: break;
658: }
659:
660: /*
661: * flush what we just wrote if necessary.
662: * XXXUBC simplistic async flushing.
663: */
664:
665: if (!async && oldoff >> 16 != uio->uio_offset >> 16) {
666: simple_lock(&vp->v_interlock);
667: error = VOP_PUTPAGES(vp, (oldoff >> 16) << 16,
668: (uio->uio_offset >> 16) << 16, PGO_CLEANIT);
669: }
670: } while (error == 0 && uio->uio_resid > 0);
671: if (error == 0 && ioflag & IO_SYNC) {
672: simple_lock(&vp->v_interlock);
673: error = VOP_PUTPAGES(vp, trunc_page(oldoff),
674: round_page(oldoff + bytelen), PGO_CLEANIT | PGO_SYNCIO);
675: }
676: dep->de_flag |= DE_UPDATE;
677:
678: /*
679: * If the write failed and they want us to, truncate the file back
680: * to the size it was before the write was attempted.
681: */
682: errexit:
683: if (resid > uio->uio_resid)
684: VN_KNOTE(vp, NOTE_WRITE | (extended ? NOTE_EXTEND : 0));
685: if (error) {
686: detrunc(dep, osize, ioflag & IO_SYNC, NOCRED, NULL);
687: uio->uio_offset -= resid - uio->uio_resid;
688: uio->uio_resid = resid;
689: } else if ((ioflag & IO_SYNC) == IO_SYNC)
690: error = deupdat(dep, 1);
691: KASSERT(vp->v_size == dep->de_FileSize);
692: return (error);
693: }
694:
695: int
1.21 yamt 696: msdosfs_update(struct vnode *vp, const struct timespec *acc,
697: const struct timespec *mod, int flags)
1.1 jdolecek 698: {
699: struct buf *bp;
700: struct direntry *dirp;
701: struct denode *dep;
702: int error;
703:
1.21 yamt 704: if (vp->v_mount->mnt_flag & MNT_RDONLY)
1.1 jdolecek 705: return (0);
1.21 yamt 706: dep = VTODE(vp);
707: DETIMES(dep, acc, mod, NULL, dep->de_pmp->pm_gmtoff);
1.1 jdolecek 708: if ((dep->de_flag & DE_MODIFIED) == 0)
709: return (0);
710: dep->de_flag &= ~DE_MODIFIED;
711: if (dep->de_Attributes & ATTR_DIRECTORY)
712: return (0);
713: if (dep->de_refcnt <= 0)
714: return (0);
715: error = readde(dep, &bp, &dirp);
716: if (error)
717: return (error);
718: DE_EXTERNALIZE(dirp, dep);
1.21 yamt 719: if (flags & (UPDATE_WAIT|UPDATE_DIROP))
1.1 jdolecek 720: return (bwrite(bp));
721: else {
722: bdwrite(bp);
723: return (0);
724: }
725: }
726:
727: /*
728: * Flush the blocks of a file to disk.
729: *
730: * This function is worthless for vnodes that represent directories. Maybe we
731: * could just do a sync if they try an fsync on a directory file.
732: */
733: int
734: msdosfs_remove(v)
735: void *v;
736: {
737: struct vop_remove_args /* {
738: struct vnode *a_dvp;
739: struct vnode *a_vp;
740: struct componentname *a_cnp;
741: } */ *ap = v;
742: struct denode *dep = VTODE(ap->a_vp);
743: struct denode *ddep = VTODE(ap->a_dvp);
744: int error;
745:
746: if (ap->a_vp->v_type == VDIR)
747: error = EPERM;
748: else
749: error = removede(ddep, dep);
750: #ifdef MSDOSFS_DEBUG
751: printf("msdosfs_remove(), dep %p, v_usecount %d\n",
752: dep, ap->a_vp->v_usecount);
753: #endif
754: VN_KNOTE(ap->a_vp, NOTE_DELETE);
755: VN_KNOTE(ap->a_dvp, NOTE_WRITE);
756: if (ddep == dep)
757: vrele(ap->a_vp);
758: else
759: vput(ap->a_vp); /* causes msdosfs_inactive() to be called
760: * via vrele() */
761: vput(ap->a_dvp);
762: return (error);
763: }
764:
765: /*
766: * DOS filesystems don't know what links are. But since we already called
767: * msdosfs_lookup() with create and lockparent, the parent is locked so we
768: * have to free it before we return the error.
769: */
770: int
771: msdosfs_link(v)
772: void *v;
773: {
774: struct vop_link_args /* {
775: struct vnode *a_dvp;
776: struct vnode *a_vp;
777: struct componentname *a_cnp;
778: } */ *ap = v;
779:
780: VOP_ABORTOP(ap->a_dvp, ap->a_cnp);
781: vput(ap->a_dvp);
782: return (EOPNOTSUPP);
783: }
784:
785: /*
786: * Renames on files require moving the denode to a new hash queue since the
787: * denode's location is used to compute which hash queue to put the file
788: * in. Unless it is a rename in place. For example "mv a b".
789: *
790: * What follows is the basic algorithm:
791: *
792: * if (file move) {
793: * if (dest file exists) {
794: * remove dest file
795: * }
796: * if (dest and src in same directory) {
797: * rewrite name in existing directory slot
798: * } else {
799: * write new entry in dest directory
800: * update offset and dirclust in denode
801: * move denode to new hash chain
802: * clear old directory entry
803: * }
804: * } else {
805: * directory move
806: * if (dest directory exists) {
807: * if (dest is not empty) {
808: * return ENOTEMPTY
809: * }
810: * remove dest directory
811: * }
812: * if (dest and src in same directory) {
813: * rewrite name in existing entry
814: * } else {
815: * be sure dest is not a child of src directory
816: * write entry in dest directory
817: * update "." and ".." in moved directory
818: * update offset and dirclust in denode
819: * move denode to new hash chain
820: * clear old directory entry for moved directory
821: * }
822: * }
823: *
824: * On entry:
825: * source's parent directory is unlocked
826: * source file or directory is unlocked
827: * destination's parent directory is locked
828: * destination file or directory is locked if it exists
829: *
830: * On exit:
831: * all denodes should be released
832: *
833: * Notes:
834: * I'm not sure how the memory containing the pathnames pointed at by the
835: * componentname structures is freed, there may be some memory bleeding
836: * for each rename done.
837: */
838: int
839: msdosfs_rename(v)
840: void *v;
841: {
842: struct vop_rename_args /* {
843: struct vnode *a_fdvp;
844: struct vnode *a_fvp;
845: struct componentname *a_fcnp;
846: struct vnode *a_tdvp;
847: struct vnode *a_tvp;
848: struct componentname *a_tcnp;
849: } */ *ap = v;
850: struct vnode *tvp = ap->a_tvp;
851: struct vnode *tdvp = ap->a_tdvp;
852: struct vnode *fvp = ap->a_fvp;
853: struct vnode *fdvp = ap->a_fdvp;
854: struct componentname *tcnp = ap->a_tcnp;
855: struct componentname *fcnp = ap->a_fcnp;
1.24 christos 856: struct lwp *l = tcnp->cn_lwp;
1.1 jdolecek 857: struct denode *ip, *xp, *dp, *zp;
858: u_char toname[11], oldname[11];
859: u_long from_diroffset, to_diroffset;
860: u_char to_count;
861: int doingdirectory = 0, newparent = 0;
862: int error;
863: u_long cn;
864: daddr_t bn;
865: struct msdosfsmount *pmp;
866: struct direntry *dotdotp;
867: struct buf *bp;
868: int fdvp_dorele = 0;
869:
870: pmp = VFSTOMSDOSFS(fdvp->v_mount);
871:
872: #ifdef DIAGNOSTIC
873: if ((tcnp->cn_flags & HASBUF) == 0 ||
874: (fcnp->cn_flags & HASBUF) == 0)
875: panic("msdosfs_rename: no name");
876: #endif
877: /*
878: * Check for cross-device rename.
879: */
880: if ((fvp->v_mount != tdvp->v_mount) ||
881: (tvp && (fvp->v_mount != tvp->v_mount))) {
882: error = EXDEV;
883: abortit:
884: VOP_ABORTOP(tdvp, tcnp);
885: if (tdvp == tvp)
886: vrele(tdvp);
887: else
888: vput(tdvp);
889: if (tvp)
890: vput(tvp);
891: VOP_ABORTOP(fdvp, fcnp);
892: vrele(fdvp);
893: vrele(fvp);
894: return (error);
895: }
896:
897: /*
898: * If source and dest are the same, do nothing.
899: */
900: if (tvp == fvp) {
901: error = 0;
902: goto abortit;
903: }
904:
905: /* */
906: if ((error = vn_lock(fvp, LK_EXCLUSIVE)) != 0)
907: goto abortit;
908: dp = VTODE(fdvp);
909: ip = VTODE(fvp);
910:
911: /*
912: * Be sure we are not renaming ".", "..", or an alias of ".". This
913: * leads to a crippled directory tree. It's pretty tough to do a
914: * "ls" or "pwd" with the "." directory entry missing, and "cd .."
915: * doesn't work if the ".." entry is missing.
916: */
917: if (ip->de_Attributes & ATTR_DIRECTORY) {
918: /*
919: * Avoid ".", "..", and aliases of "." for obvious reasons.
920: */
921: if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
922: dp == ip ||
923: (fcnp->cn_flags & ISDOTDOT) ||
924: (tcnp->cn_flags & ISDOTDOT) ||
925: (ip->de_flag & DE_RENAME)) {
926: VOP_UNLOCK(fvp, 0);
927: error = EINVAL;
928: goto abortit;
929: }
930: ip->de_flag |= DE_RENAME;
931: doingdirectory++;
932: }
933: VN_KNOTE(fdvp, NOTE_WRITE); /* XXXLUKEM/XXX: right place? */
934:
935: /*
936: * When the target exists, both the directory
937: * and target vnodes are returned locked.
938: */
939: dp = VTODE(tdvp);
940: xp = tvp ? VTODE(tvp) : NULL;
941: /*
942: * Remember direntry place to use for destination
943: */
944: to_diroffset = dp->de_fndoffset;
945: to_count = dp->de_fndcnt;
946:
947: /*
948: * If ".." must be changed (ie the directory gets a new
949: * parent) then the source directory must not be in the
950: * directory hierarchy above the target, as this would
951: * orphan everything below the source directory. Also
952: * the user must have write permission in the source so
953: * as to be able to change "..". We must repeat the call
954: * to namei, as the parent directory is unlocked by the
955: * call to doscheckpath().
956: */
1.24 christos 957: error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred, l);
1.1 jdolecek 958: VOP_UNLOCK(fvp, 0);
959: if (VTODE(fdvp)->de_StartCluster != VTODE(tdvp)->de_StartCluster)
960: newparent = 1;
961: vrele(fdvp);
962: if (doingdirectory && newparent) {
963: if (error) /* write access check above */
964: goto bad;
965: if (xp != NULL)
966: vput(tvp);
967: /*
968: * doscheckpath() vput()'s dp,
969: * so we have to do a relookup afterwards
970: */
971: if ((error = doscheckpath(ip, dp)) != 0)
972: goto out;
973: if ((tcnp->cn_flags & SAVESTART) == 0)
974: panic("msdosfs_rename: lost to startdir");
975: if ((error = relookup(tdvp, &tvp, tcnp)) != 0)
976: goto out;
977: dp = VTODE(tdvp);
978: xp = tvp ? VTODE(tvp) : NULL;
979: }
980:
981: if (xp != NULL) {
982: /*
983: * Target must be empty if a directory and have no links
984: * to it. Also, ensure source and target are compatible
985: * (both directories, or both not directories).
986: */
987: if (xp->de_Attributes & ATTR_DIRECTORY) {
988: if (!dosdirempty(xp)) {
989: error = ENOTEMPTY;
990: goto bad;
991: }
992: if (!doingdirectory) {
993: error = ENOTDIR;
994: goto bad;
995: }
996: } else if (doingdirectory) {
997: error = EISDIR;
998: goto bad;
999: }
1000: if ((error = removede(dp, xp)) != 0)
1001: goto bad;
1002: VN_KNOTE(tdvp, NOTE_WRITE);
1003: VN_KNOTE(tvp, NOTE_DELETE);
1004: cache_purge(tvp);
1005: vput(tvp);
1006: xp = NULL;
1007: }
1008:
1009: /*
1010: * Convert the filename in tcnp into a dos filename. We copy this
1011: * into the denode and directory entry for the destination
1012: * file/directory.
1013: */
1014: if ((error = uniqdosname(VTODE(tdvp), tcnp, toname)) != 0)
1015: goto abortit;
1016:
1017: /*
1018: * Since from wasn't locked at various places above,
1019: * have to do a relookup here.
1020: */
1021: fcnp->cn_flags &= ~MODMASK;
1022: fcnp->cn_flags |= LOCKPARENT | LOCKLEAF;
1023: if ((fcnp->cn_flags & SAVESTART) == 0)
1024: panic("msdosfs_rename: lost from startdir");
1025: if (!newparent)
1026: VOP_UNLOCK(tdvp, 0);
1027: (void) relookup(fdvp, &fvp, fcnp);
1028: if (fvp == NULL) {
1029: /*
1030: * From name has disappeared.
1031: */
1032: if (doingdirectory)
1033: panic("rename: lost dir entry");
1034: vrele(ap->a_fvp);
1035: if (newparent)
1036: VOP_UNLOCK(tdvp, 0);
1037: vrele(tdvp);
1038: return 0;
1039: }
1040: fdvp_dorele = 1;
1041: xp = VTODE(fvp);
1042: zp = VTODE(fdvp);
1043: from_diroffset = zp->de_fndoffset;
1044:
1045: /*
1046: * Ensure that the directory entry still exists and has not
1047: * changed till now. If the source is a file the entry may
1048: * have been unlinked or renamed. In either case there is
1049: * no further work to be done. If the source is a directory
1050: * then it cannot have been rmdir'ed or renamed; this is
1051: * prohibited by the DE_RENAME flag.
1052: */
1053: if (xp != ip) {
1054: if (doingdirectory)
1055: panic("rename: lost dir entry");
1056: vrele(ap->a_fvp);
1057: VOP_UNLOCK(fvp, 0);
1058: if (newparent)
1059: VOP_UNLOCK(fdvp, 0);
1060: xp = NULL;
1061: } else {
1062: vrele(fvp);
1063: xp = NULL;
1064:
1065: /*
1066: * First write a new entry in the destination
1067: * directory and mark the entry in the source directory
1068: * as deleted. Then move the denode to the correct hash
1069: * chain for its new location in the filesystem. And, if
1070: * we moved a directory, then update its .. entry to point
1071: * to the new parent directory.
1072: */
1073: memcpy(oldname, ip->de_Name, 11);
1074: memcpy(ip->de_Name, toname, 11); /* update denode */
1075: dp->de_fndoffset = to_diroffset;
1076: dp->de_fndcnt = to_count;
1077: error = createde(ip, dp, (struct denode **)0, tcnp);
1078: if (error) {
1079: memcpy(ip->de_Name, oldname, 11);
1080: if (newparent)
1081: VOP_UNLOCK(fdvp, 0);
1082: VOP_UNLOCK(fvp, 0);
1083: goto bad;
1084: }
1085: ip->de_refcnt++;
1086: zp->de_fndoffset = from_diroffset;
1087: if ((error = removede(zp, ip)) != 0) {
1088: /* XXX should really panic here, fs is corrupt */
1089: if (newparent)
1090: VOP_UNLOCK(fdvp, 0);
1091: VOP_UNLOCK(fvp, 0);
1092: goto bad;
1093: }
1094: cache_purge(fvp);
1095: if (!doingdirectory) {
1096: error = pcbmap(dp, de_cluster(pmp, to_diroffset), 0,
1097: &ip->de_dirclust, 0);
1098: if (error) {
1099: /* XXX should really panic here, fs is corrupt */
1100: if (newparent)
1101: VOP_UNLOCK(fdvp, 0);
1102: VOP_UNLOCK(fvp, 0);
1103: goto bad;
1104: }
1105: ip->de_diroffset = to_diroffset;
1106: if (ip->de_dirclust != MSDOSFSROOT)
1107: ip->de_diroffset &= pmp->pm_crbomask;
1108: }
1109: reinsert(ip);
1110: if (newparent)
1111: VOP_UNLOCK(fdvp, 0);
1112: }
1113:
1114: /*
1115: * If we moved a directory to a new parent directory, then we must
1116: * fixup the ".." entry in the moved directory.
1117: */
1118: if (doingdirectory && newparent) {
1119: cn = ip->de_StartCluster;
1120: if (cn == MSDOSFSROOT) {
1121: /* this should never happen */
1122: panic("msdosfs_rename: updating .. in root directory?");
1123: } else
1124: bn = cntobn(pmp, cn);
1125: error = bread(pmp->pm_devvp, bn, pmp->pm_bpcluster,
1126: NOCRED, &bp);
1127: if (error) {
1128: /* XXX should really panic here, fs is corrupt */
1129: brelse(bp);
1130: VOP_UNLOCK(fvp, 0);
1131: goto bad;
1132: }
1133: dotdotp = (struct direntry *)bp->b_data + 1;
1134: putushort(dotdotp->deStartCluster, dp->de_StartCluster);
1135: if (FAT32(pmp)) {
1136: putushort(dotdotp->deHighClust,
1137: dp->de_StartCluster >> 16);
1.22 christos 1138: } else {
1139: putushort(dotdotp->deHighClust, 0);
1.1 jdolecek 1140: }
1141: if ((error = bwrite(bp)) != 0) {
1142: /* XXX should really panic here, fs is corrupt */
1143: VOP_UNLOCK(fvp, 0);
1144: goto bad;
1145: }
1146: }
1147:
1148: VN_KNOTE(fvp, NOTE_RENAME);
1149: VOP_UNLOCK(fvp, 0);
1150: bad:
1151: if (xp)
1152: vput(tvp);
1153: vput(tdvp);
1154: out:
1155: ip->de_flag &= ~DE_RENAME;
1156: if (fdvp_dorele)
1157: vrele(fdvp);
1158: vrele(fvp);
1159: return (error);
1160:
1161: }
1162:
1.2 jdolecek 1163: static const struct {
1.1 jdolecek 1164: struct direntry dot;
1165: struct direntry dotdot;
1166: } dosdirtemplate = {
1167: { ". ", " ", /* the . entry */
1168: ATTR_DIRECTORY, /* file attribute */
1169: 0, /* reserved */
1170: 0, { 0, 0 }, { 0, 0 }, /* create time & date */
1171: { 0, 0 }, /* access date */
1172: { 0, 0 }, /* high bits of start cluster */
1173: { 210, 4 }, { 210, 4 }, /* modify time & date */
1174: { 0, 0 }, /* startcluster */
1175: { 0, 0, 0, 0 } /* filesize */
1176: },
1177: { ".. ", " ", /* the .. entry */
1178: ATTR_DIRECTORY, /* file attribute */
1179: 0, /* reserved */
1180: 0, { 0, 0 }, { 0, 0 }, /* create time & date */
1181: { 0, 0 }, /* access date */
1182: { 0, 0 }, /* high bits of start cluster */
1183: { 210, 4 }, { 210, 4 }, /* modify time & date */
1184: { 0, 0 }, /* startcluster */
1185: { 0, 0, 0, 0 } /* filesize */
1186: }
1187: };
1188:
1189: int
1190: msdosfs_mkdir(v)
1191: void *v;
1192: {
1193: struct vop_mkdir_args /* {
1194: struct vnode *a_dvp;
1195: struvt vnode **a_vpp;
1196: struvt componentname *a_cnp;
1197: struct vattr *a_vap;
1198: } */ *ap = v;
1199: struct componentname *cnp = ap->a_cnp;
1200: struct denode ndirent;
1201: struct denode *dep;
1202: struct denode *pdep = VTODE(ap->a_dvp);
1203: int error;
1204: int bn;
1205: u_long newcluster, pcl;
1206: struct direntry *denp;
1207: struct msdosfsmount *pmp = pdep->de_pmp;
1208: struct buf *bp;
1209: int async = pdep->de_pmp->pm_mountp->mnt_flag & MNT_ASYNC;
1210:
1211: /*
1212: * If this is the root directory and there is no space left we
1213: * can't do anything. This is because the root directory can not
1214: * change size.
1215: */
1216: if (pdep->de_StartCluster == MSDOSFSROOT
1217: && pdep->de_fndoffset >= pdep->de_FileSize) {
1218: error = ENOSPC;
1219: goto bad2;
1220: }
1221:
1222: /*
1223: * Allocate a cluster to hold the about to be created directory.
1224: */
1225: error = clusteralloc(pmp, 0, 1, &newcluster, NULL);
1226: if (error)
1227: goto bad2;
1228:
1229: memset(&ndirent, 0, sizeof(ndirent));
1230: ndirent.de_pmp = pmp;
1231: ndirent.de_flag = DE_ACCESS | DE_CREATE | DE_UPDATE;
1.20 christos 1232: DETIMES(&ndirent, NULL, NULL, NULL, pmp->pm_gmtoff);
1.1 jdolecek 1233:
1234: /*
1235: * Now fill the cluster with the "." and ".." entries. And write
1236: * the cluster to disk. This way it is there for the parent
1237: * directory to be pointing at if there were a crash.
1238: */
1239: bn = cntobn(pmp, newcluster);
1240: /* always succeeds */
1241: bp = getblk(pmp->pm_devvp, bn, pmp->pm_bpcluster, 0, 0);
1242: memset(bp->b_data, 0, pmp->pm_bpcluster);
1243: memcpy(bp->b_data, &dosdirtemplate, sizeof dosdirtemplate);
1244: denp = (struct direntry *)bp->b_data;
1245: putushort(denp[0].deStartCluster, newcluster);
1246: putushort(denp[0].deCDate, ndirent.de_CDate);
1247: putushort(denp[0].deCTime, ndirent.de_CTime);
1248: denp[0].deCHundredth = ndirent.de_CHun;
1249: putushort(denp[0].deADate, ndirent.de_ADate);
1250: putushort(denp[0].deMDate, ndirent.de_MDate);
1251: putushort(denp[0].deMTime, ndirent.de_MTime);
1252: pcl = pdep->de_StartCluster;
1253: if (FAT32(pmp) && pcl == pmp->pm_rootdirblk)
1254: pcl = 0;
1255: putushort(denp[1].deStartCluster, pcl);
1256: putushort(denp[1].deCDate, ndirent.de_CDate);
1257: putushort(denp[1].deCTime, ndirent.de_CTime);
1258: denp[1].deCHundredth = ndirent.de_CHun;
1259: putushort(denp[1].deADate, ndirent.de_ADate);
1260: putushort(denp[1].deMDate, ndirent.de_MDate);
1261: putushort(denp[1].deMTime, ndirent.de_MTime);
1262: if (FAT32(pmp)) {
1263: putushort(denp[0].deHighClust, newcluster >> 16);
1264: putushort(denp[1].deHighClust, pdep->de_StartCluster >> 16);
1.22 christos 1265: } else {
1266: putushort(denp[0].deHighClust, 0);
1267: putushort(denp[1].deHighClust, 0);
1.1 jdolecek 1268: }
1269:
1270: if (async)
1271: bdwrite(bp);
1272: else if ((error = bwrite(bp)) != 0)
1273: goto bad;
1274:
1275: /*
1276: * Now build up a directory entry pointing to the newly allocated
1277: * cluster. This will be written to an empty slot in the parent
1278: * directory.
1279: */
1280: #ifdef DIAGNOSTIC
1281: if ((cnp->cn_flags & HASBUF) == 0)
1282: panic("msdosfs_mkdir: no name");
1283: #endif
1284: if ((error = uniqdosname(pdep, cnp, ndirent.de_Name)) != 0)
1285: goto bad;
1286:
1287: ndirent.de_Attributes = ATTR_DIRECTORY;
1288: ndirent.de_StartCluster = newcluster;
1289: ndirent.de_FileSize = 0;
1290: ndirent.de_dev = pdep->de_dev;
1291: ndirent.de_devvp = pdep->de_devvp;
1292: if ((error = createde(&ndirent, pdep, &dep, cnp)) != 0)
1293: goto bad;
1294: if ((cnp->cn_flags & SAVESTART) == 0)
1295: PNBUF_PUT(cnp->cn_pnbuf);
1296: VN_KNOTE(ap->a_dvp, NOTE_WRITE | NOTE_LINK);
1297: vput(ap->a_dvp);
1298: *ap->a_vpp = DETOV(dep);
1299: return (0);
1300:
1301: bad:
1302: clusterfree(pmp, newcluster, NULL);
1303: bad2:
1304: PNBUF_PUT(cnp->cn_pnbuf);
1305: vput(ap->a_dvp);
1306: return (error);
1307: }
1308:
1309: int
1310: msdosfs_rmdir(v)
1311: void *v;
1312: {
1313: struct vop_rmdir_args /* {
1314: struct vnode *a_dvp;
1315: struct vnode *a_vp;
1316: struct componentname *a_cnp;
1317: } */ *ap = v;
1318: struct vnode *vp = ap->a_vp;
1319: struct vnode *dvp = ap->a_dvp;
1320: struct componentname *cnp = ap->a_cnp;
1321: struct denode *ip, *dp;
1322: int error;
1323:
1324: ip = VTODE(vp);
1325: dp = VTODE(dvp);
1326: /*
1327: * No rmdir "." please.
1328: */
1329: if (dp == ip) {
1330: vrele(dvp);
1331: vput(vp);
1332: return (EINVAL);
1333: }
1334: /*
1335: * Verify the directory is empty (and valid).
1336: * (Rmdir ".." won't be valid since
1337: * ".." will contain a reference to
1338: * the current directory and thus be
1339: * non-empty.)
1340: */
1341: error = 0;
1342: if (!dosdirempty(ip) || ip->de_flag & DE_RENAME) {
1343: error = ENOTEMPTY;
1344: goto out;
1345: }
1346: /*
1347: * Delete the entry from the directory. For dos filesystems this
1348: * gets rid of the directory entry on disk, the in memory copy
1349: * still exists but the de_refcnt is <= 0. This prevents it from
1350: * being found by deget(). When the vput() on dep is done we give
1351: * up access and eventually msdosfs_reclaim() will be called which
1352: * will remove it from the denode cache.
1353: */
1354: if ((error = removede(dp, ip)) != 0)
1355: goto out;
1356: /*
1357: * This is where we decrement the link count in the parent
1358: * directory. Since dos filesystems don't do this we just purge
1359: * the name cache and let go of the parent directory denode.
1360: */
1361: VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK);
1362: cache_purge(dvp);
1363: vput(dvp);
1364: dvp = NULL;
1365: /*
1366: * Truncate the directory that is being deleted.
1367: */
1.24 christos 1368: error = detrunc(ip, (u_long)0, IO_SYNC, cnp->cn_cred, cnp->cn_lwp);
1.1 jdolecek 1369: cache_purge(vp);
1370: out:
1371: VN_KNOTE(vp, NOTE_DELETE);
1372: if (dvp)
1373: vput(dvp);
1374: vput(vp);
1375: return (error);
1376: }
1377:
1378: /*
1379: * DOS filesystems don't know what symlinks are.
1380: */
1381: int
1382: msdosfs_symlink(v)
1383: void *v;
1384: {
1385: struct vop_symlink_args /* {
1386: struct vnode *a_dvp;
1387: struct vnode **a_vpp;
1388: struct componentname *a_cnp;
1389: struct vattr *a_vap;
1390: char *a_target;
1391: } */ *ap = v;
1392:
1393: VOP_ABORTOP(ap->a_dvp, ap->a_cnp);
1394: vput(ap->a_dvp);
1395: return (EOPNOTSUPP);
1396: }
1397:
1398: int
1399: msdosfs_readdir(v)
1400: void *v;
1401: {
1402: struct vop_readdir_args /* {
1403: struct vnode *a_vp;
1404: struct uio *a_uio;
1.26.4.1 elad 1405: kauth_cred_t a_cred;
1.1 jdolecek 1406: int *a_eofflag;
1407: off_t **a_cookies;
1408: int *a_ncookies;
1409: } */ *ap = v;
1410: int error = 0;
1411: int diff;
1412: long n;
1413: int blsize;
1414: long on;
1415: long lost;
1416: long count;
1417: u_long cn;
1.19 christos 1418: ino_t fileno;
1.1 jdolecek 1419: u_long dirsperblk;
1420: long bias = 0;
1421: daddr_t bn, lbn;
1422: struct buf *bp;
1423: struct denode *dep = VTODE(ap->a_vp);
1424: struct msdosfsmount *pmp = dep->de_pmp;
1425: struct direntry *dentp;
1426: struct dirent dirbuf;
1427: struct uio *uio = ap->a_uio;
1428: off_t *cookies = NULL;
1429: int ncookies = 0, nc = 0;
1430: off_t offset, uio_off;
1431: int chksum = -1;
1432:
1433: #ifdef MSDOSFS_DEBUG
1434: printf("msdosfs_readdir(): vp %p, uio %p, cred %p, eofflagp %p\n",
1435: ap->a_vp, uio, ap->a_cred, ap->a_eofflag);
1436: #endif
1437:
1438: /*
1439: * msdosfs_readdir() won't operate properly on regular files since
1440: * it does i/o only with the filesystem vnode, and hence can
1441: * retrieve the wrong block from the buffer cache for a plain file.
1442: * So, fail attempts to readdir() on a plain file.
1443: */
1444: if ((dep->de_Attributes & ATTR_DIRECTORY) == 0)
1445: return (ENOTDIR);
1446:
1447: /*
1448: * To be safe, initialize dirbuf
1449: */
1450: memset(dirbuf.d_name, 0, sizeof(dirbuf.d_name));
1451:
1452: /*
1453: * If the user buffer is smaller than the size of one dos directory
1454: * entry or the file offset is not a multiple of the size of a
1455: * directory entry, then we fail the read.
1456: */
1457: count = uio->uio_resid & ~(sizeof(struct direntry) - 1);
1458: offset = uio->uio_offset;
1459: if (count < sizeof(struct direntry) ||
1460: (offset & (sizeof(struct direntry) - 1)))
1461: return (EINVAL);
1462: lost = uio->uio_resid - count;
1463: uio->uio_resid = count;
1464: uio_off = uio->uio_offset;
1465:
1466: if (ap->a_ncookies) {
1467: nc = uio->uio_resid / 16;
1468: cookies = malloc(nc * sizeof (off_t), M_TEMP, M_WAITOK);
1469: *ap->a_cookies = cookies;
1470: }
1471:
1472: dirsperblk = pmp->pm_BytesPerSec / sizeof(struct direntry);
1473:
1474: /*
1475: * If they are reading from the root directory then, we simulate
1476: * the . and .. entries since these don't exist in the root
1477: * directory. We also set the offset bias to make up for having to
1478: * simulate these entries. By this I mean that at file offset 64 we
1479: * read the first entry in the root directory that lives on disk.
1480: */
1481: if (dep->de_StartCluster == MSDOSFSROOT
1482: || (FAT32(pmp) && dep->de_StartCluster == pmp->pm_rootdirblk)) {
1483: #if 0
1484: printf("msdosfs_readdir(): going after . or .. in root dir, offset %d\n",
1485: offset);
1486: #endif
1487: bias = 2 * sizeof(struct direntry);
1488: if (offset < bias) {
1489: for (n = (int)offset / sizeof(struct direntry);
1490: n < 2; n++) {
1491: if (FAT32(pmp))
1492: dirbuf.d_fileno = cntobn(pmp,
1.19 christos 1493: (ino_t)pmp->pm_rootdirblk)
1494: * dirsperblk;
1.1 jdolecek 1495: else
1496: dirbuf.d_fileno = 1;
1497: dirbuf.d_type = DT_DIR;
1498: switch (n) {
1499: case 0:
1500: dirbuf.d_namlen = 1;
1.3 itojun 1501: strlcpy(dirbuf.d_name, ".",
1502: sizeof(dirbuf.d_name));
1.1 jdolecek 1503: break;
1504: case 1:
1505: dirbuf.d_namlen = 2;
1.3 itojun 1506: strlcpy(dirbuf.d_name, "..",
1507: sizeof(dirbuf.d_name));
1.1 jdolecek 1508: break;
1509: }
1.15 christos 1510: dirbuf.d_reclen = _DIRENT_SIZE(&dirbuf);
1.1 jdolecek 1511: if (uio->uio_resid < dirbuf.d_reclen)
1512: goto out;
1.14 perry 1513: error = uiomove(&dirbuf,
1.1 jdolecek 1514: dirbuf.d_reclen, uio);
1515: if (error)
1516: goto out;
1517: offset += sizeof(struct direntry);
1518: uio_off = offset;
1519: if (cookies) {
1520: *cookies++ = offset;
1521: ncookies++;
1522: if (ncookies >= nc)
1523: goto out;
1524: }
1525: }
1526: }
1527: }
1528:
1529: while (uio->uio_resid > 0) {
1530: lbn = de_cluster(pmp, offset - bias);
1531: on = (offset - bias) & pmp->pm_crbomask;
1532: n = MIN(pmp->pm_bpcluster - on, uio->uio_resid);
1533: diff = dep->de_FileSize - (offset - bias);
1534: if (diff <= 0)
1535: break;
1536: n = MIN(n, diff);
1537: if ((error = pcbmap(dep, lbn, &bn, &cn, &blsize)) != 0)
1538: break;
1539: error = bread(pmp->pm_devvp, bn, blsize, NOCRED, &bp);
1540: if (error) {
1541: brelse(bp);
1542: return (error);
1543: }
1544: n = MIN(n, blsize - bp->b_resid);
1545:
1546: /*
1547: * Convert from dos directory entries to fs-independent
1548: * directory entries.
1549: */
1550: for (dentp = (struct direntry *)(bp->b_data + on);
1551: (char *)dentp < bp->b_data + on + n;
1552: dentp++, offset += sizeof(struct direntry)) {
1553: #if 0
1554:
1555: printf("rd: dentp %08x prev %08x crnt %08x deName %02x attr %02x\n",
1556: dentp, prev, crnt, dentp->deName[0], dentp->deAttributes);
1557: #endif
1558: /*
1559: * If this is an unused entry, we can stop.
1560: */
1561: if (dentp->deName[0] == SLOT_EMPTY) {
1562: brelse(bp);
1563: goto out;
1564: }
1565: /*
1566: * Skip deleted entries.
1567: */
1568: if (dentp->deName[0] == SLOT_DELETED) {
1569: chksum = -1;
1570: continue;
1571: }
1572:
1573: /*
1574: * Handle Win95 long directory entries
1575: */
1576: if (dentp->deAttributes == ATTR_WIN95) {
1577: if (pmp->pm_flags & MSDOSFSMNT_SHORTNAME)
1578: continue;
1579: chksum = win2unixfn((struct winentry *)dentp, &dirbuf, chksum);
1580: continue;
1581: }
1582:
1583: /*
1584: * Skip volume labels
1585: */
1586: if (dentp->deAttributes & ATTR_VOLUME) {
1587: chksum = -1;
1588: continue;
1589: }
1590: /*
1591: * This computation of d_fileno must match
1592: * the computation of va_fileid in
1593: * msdosfs_getattr.
1594: */
1595: if (dentp->deAttributes & ATTR_DIRECTORY) {
1596: fileno = getushort(dentp->deStartCluster);
1597: if (FAT32(pmp))
1.19 christos 1598: fileno |= ((ino_t)getushort(dentp->deHighClust)) << 16;
1.1 jdolecek 1599: /* if this is the root directory */
1600: if (fileno == MSDOSFSROOT)
1601: if (FAT32(pmp))
1602: fileno = cntobn(pmp,
1.19 christos 1603: (ino_t)pmp->pm_rootdirblk)
1604: * dirsperblk;
1.1 jdolecek 1605: else
1606: fileno = 1;
1607: else
1608: fileno = cntobn(pmp, fileno) * dirsperblk;
1609: dirbuf.d_fileno = fileno;
1610: dirbuf.d_type = DT_DIR;
1611: } else {
1612: dirbuf.d_fileno = offset / sizeof(struct direntry);
1613: dirbuf.d_type = DT_REG;
1614: }
1615: if (chksum != winChksum(dentp->deName))
1616: dirbuf.d_namlen = dos2unixfn(dentp->deName,
1617: (u_char *)dirbuf.d_name,
1618: pmp->pm_flags & MSDOSFSMNT_SHORTNAME);
1619: else
1620: dirbuf.d_name[dirbuf.d_namlen] = 0;
1621: chksum = -1;
1.15 christos 1622: dirbuf.d_reclen = _DIRENT_SIZE(&dirbuf);
1.1 jdolecek 1623: if (uio->uio_resid < dirbuf.d_reclen) {
1624: brelse(bp);
1625: goto out;
1626: }
1.10 jrf 1627: error = uiomove(&dirbuf,
1.1 jdolecek 1628: dirbuf.d_reclen, uio);
1629: if (error) {
1630: brelse(bp);
1631: goto out;
1632: }
1633: uio_off = offset + sizeof(struct direntry);
1634: if (cookies) {
1635: *cookies++ = offset + sizeof(struct direntry);
1636: ncookies++;
1637: if (ncookies >= nc) {
1638: brelse(bp);
1639: goto out;
1640: }
1641: }
1642: }
1643: brelse(bp);
1644: }
1645:
1646: out:
1647: uio->uio_offset = uio_off;
1648: uio->uio_resid += lost;
1649: if (dep->de_FileSize - (offset - bias) <= 0)
1650: *ap->a_eofflag = 1;
1651: else
1652: *ap->a_eofflag = 0;
1653:
1654: if (ap->a_ncookies) {
1655: if (error) {
1656: free(*ap->a_cookies, M_TEMP);
1657: *ap->a_ncookies = 0;
1658: *ap->a_cookies = NULL;
1659: } else
1660: *ap->a_ncookies = ncookies;
1661: }
1662: return (error);
1663: }
1664:
1665: /*
1666: * DOS filesystems don't know what symlinks are.
1667: */
1668: int
1669: msdosfs_readlink(v)
1670: void *v;
1671: {
1672: #if 0
1673: struct vop_readlink_args /* {
1674: struct vnode *a_vp;
1675: struct uio *a_uio;
1.26.4.1 elad 1676: kauth_cred_t a_cred;
1.1 jdolecek 1677: } */ *ap;
1678: #endif
1679:
1680: return (EINVAL);
1681: }
1682:
1683: /*
1684: * vp - address of vnode file the file
1685: * bn - which cluster we are interested in mapping to a filesystem block number.
1686: * vpp - returns the vnode for the block special file holding the filesystem
1687: * containing the file of interest
1688: * bnp - address of where to return the filesystem relative block number
1689: */
1690: int
1691: msdosfs_bmap(v)
1692: void *v;
1693: {
1694: struct vop_bmap_args /* {
1695: struct vnode *a_vp;
1696: daddr_t a_bn;
1697: struct vnode **a_vpp;
1698: daddr_t *a_bnp;
1699: int *a_runp;
1700: } */ *ap = v;
1701: struct denode *dep = VTODE(ap->a_vp);
1702:
1703: if (ap->a_vpp != NULL)
1704: *ap->a_vpp = dep->de_devvp;
1705: if (ap->a_bnp == NULL)
1706: return (0);
1707: if (ap->a_runp) {
1708: /*
1709: * Sequential clusters should be counted here.
1710: */
1711: *ap->a_runp = 0;
1712: }
1713: return (pcbmap(dep, ap->a_bn, ap->a_bnp, 0, 0));
1714: }
1715:
1716: int
1717: msdosfs_strategy(v)
1718: void *v;
1719: {
1720: struct vop_strategy_args /* {
1.9 hannken 1721: struct vnode *a_vp;
1.1 jdolecek 1722: struct buf *a_bp;
1723: } */ *ap = v;
1.9 hannken 1724: struct vnode *vp = ap->a_vp;
1.1 jdolecek 1725: struct buf *bp = ap->a_bp;
1726: struct denode *dep = VTODE(bp->b_vp);
1727: int error = 0;
1728:
1.9 hannken 1729: if (vp->v_type == VBLK || vp->v_type == VCHR)
1.1 jdolecek 1730: panic("msdosfs_strategy: spec");
1731: /*
1732: * If we don't already know the filesystem relative block number
1733: * then get it using pcbmap(). If pcbmap() returns the block
1734: * number as -1 then we've got a hole in the file. DOS filesystems
1735: * don't allow files with holes, so we shouldn't ever see this.
1736: */
1737: if (bp->b_blkno == bp->b_lblkno) {
1738: error = pcbmap(dep, de_bn2cn(dep->de_pmp, bp->b_lblkno),
1739: &bp->b_blkno, 0, 0);
1740: if (error)
1741: bp->b_blkno = -1;
1742: if (bp->b_blkno == -1)
1743: clrbuf(bp);
1744: }
1745: if (bp->b_blkno == -1) {
1746: biodone(bp);
1747: return (error);
1748: }
1749:
1750: /*
1751: * Read/write the block from/to the disk that contains the desired
1752: * file block.
1753: */
1754:
1755: vp = dep->de_devvp;
1.8 hannken 1756: return (VOP_STRATEGY(vp, bp));
1.1 jdolecek 1757: }
1758:
1759: int
1760: msdosfs_print(v)
1761: void *v;
1762: {
1763: struct vop_print_args /* {
1764: struct vnode *vp;
1765: } */ *ap = v;
1766: struct denode *dep = VTODE(ap->a_vp);
1767:
1768: printf(
1769: "tag VT_MSDOSFS, startcluster %ld, dircluster %ld, diroffset %ld ",
1770: dep->de_StartCluster, dep->de_dirclust, dep->de_diroffset);
1771: printf(" dev %d, %d ", major(dep->de_dev), minor(dep->de_dev));
1772: lockmgr_printinfo(&ap->a_vp->v_lock);
1773: printf("\n");
1774: return (0);
1775: }
1776:
1777: int
1778: msdosfs_advlock(v)
1779: void *v;
1780: {
1781: struct vop_advlock_args /* {
1782: struct vnode *a_vp;
1.11 jrf 1783: void *a_id;
1.1 jdolecek 1784: int a_op;
1785: struct flock *a_fl;
1786: int a_flags;
1787: } */ *ap = v;
1788: struct denode *dep = VTODE(ap->a_vp);
1789:
1790: return lf_advlock(ap, &dep->de_lockf, dep->de_FileSize);
1791: }
1792:
1793: int
1794: msdosfs_pathconf(v)
1795: void *v;
1796: {
1797: struct vop_pathconf_args /* {
1798: struct vnode *a_vp;
1799: int a_name;
1800: register_t *a_retval;
1801: } */ *ap = v;
1802:
1803: switch (ap->a_name) {
1804: case _PC_LINK_MAX:
1805: *ap->a_retval = 1;
1806: return (0);
1807: case _PC_NAME_MAX:
1.12 jdolecek 1808: *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_namemax;
1.1 jdolecek 1809: return (0);
1810: case _PC_PATH_MAX:
1811: *ap->a_retval = PATH_MAX;
1812: return (0);
1813: case _PC_CHOWN_RESTRICTED:
1814: *ap->a_retval = 1;
1815: return (0);
1816: case _PC_NO_TRUNC:
1817: *ap->a_retval = 0;
1818: return (0);
1819: case _PC_SYNC_IO:
1820: *ap->a_retval = 1;
1821: return (0);
1822: case _PC_FILESIZEBITS:
1823: *ap->a_retval = 32;
1824: return (0);
1825: default:
1826: return (EINVAL);
1827: }
1828: /* NOTREACHED */
1829: }
1830:
1.21 yamt 1831: int
1832: msdosfs_fsync(v)
1833: void *v;
1834: {
1835: struct vop_fsync_args /* {
1836: struct vnode *a_vp;
1.26.4.1 elad 1837: kauth_cred_t a_cred;
1.21 yamt 1838: int a_flags;
1839: off_t offlo;
1840: off_t offhi;
1841: struct proc *a_p;
1842: } */ *ap = v;
1843: struct vnode *vp = ap->a_vp;
1844: int wait;
1845: int error;
1846:
1847: wait = (ap->a_flags & FSYNC_WAIT) != 0;
1848: vflushbuf(vp, wait);
1849: if ((ap->a_flags & FSYNC_DATAONLY) != 0)
1850: error = 0;
1851: else
1852: error = msdosfs_update(vp, NULL, NULL, wait ? UPDATE_WAIT : 0);
1853:
1854: if (error == 0 && ap->a_flags & FSYNC_CACHE) {
1855: struct denode *dep = VTODE(vp);
1856: struct vnode *devvp = dep->de_devvp;
1857:
1858: int l = 0;
1859: error = VOP_IOCTL(devvp, DIOCCACHESYNC, &l, FWRITE,
1.26.4.1 elad 1860: ap->a_l->l_proc->p_cred, ap->a_l);
1.21 yamt 1861: }
1862:
1863: return (error);
1864: }
1865:
1.20 christos 1866: void
1867: msdosfs_detimes(struct denode *dep, const struct timespec *acc,
1868: const struct timespec *mod, const struct timespec *cre, int gmtoff)
1869: {
1870: struct timespec *ts = NULL, tsb;
1871:
1872: KASSERT(dep->de_flag & (DE_UPDATE | DE_CREATE | DE_ACCESS));
1873: dep->de_flag |= DE_MODIFIED;
1874: if (dep->de_flag & DE_UPDATE) {
1875: if (mod == NULL)
1876: mod = ts == NULL ? (ts = nanotime(&tsb)) : ts;
1877: unix2dostime(mod, gmtoff, &dep->de_MDate, &dep->de_MTime, NULL);
1878: dep->de_Attributes |= ATTR_ARCHIVE;
1879: }
1880: if ((dep->de_pmp->pm_flags & MSDOSFSMNT_NOWIN95) == 0) {
1881: if (dep->de_flag & DE_ACCESS) {
1882: if (acc == NULL)
1883: acc = ts == NULL ? (ts = nanotime(&tsb)) : ts;
1884: unix2dostime(acc, gmtoff, &dep->de_ADate, NULL, NULL);
1885: }
1886: if (dep->de_flag & DE_CREATE) {
1887: if (cre == NULL)
1888: cre = ts == NULL ? (ts = nanotime(&tsb)) : ts;
1889: unix2dostime(cre, gmtoff, &dep->de_CDate,
1890: &dep->de_CTime, &dep->de_CHun);
1891: }
1892: }
1893:
1894: dep->de_flag &= ~(DE_UPDATE | DE_CREATE | DE_ACCESS);
1895: }
1896:
1.1 jdolecek 1897: /* Global vfs data structures for msdosfs */
1.18 xtraeme 1898: int (**msdosfs_vnodeop_p)(void *);
1.1 jdolecek 1899: const struct vnodeopv_entry_desc msdosfs_vnodeop_entries[] = {
1900: { &vop_default_desc, vn_default_error },
1901: { &vop_lookup_desc, msdosfs_lookup }, /* lookup */
1902: { &vop_create_desc, msdosfs_create }, /* create */
1903: { &vop_mknod_desc, msdosfs_mknod }, /* mknod */
1904: { &vop_open_desc, msdosfs_open }, /* open */
1905: { &vop_close_desc, msdosfs_close }, /* close */
1906: { &vop_access_desc, msdosfs_access }, /* access */
1907: { &vop_getattr_desc, msdosfs_getattr }, /* getattr */
1908: { &vop_setattr_desc, msdosfs_setattr }, /* setattr */
1909: { &vop_read_desc, msdosfs_read }, /* read */
1910: { &vop_write_desc, msdosfs_write }, /* write */
1911: { &vop_lease_desc, msdosfs_lease_check }, /* lease */
1912: { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */
1913: { &vop_ioctl_desc, msdosfs_ioctl }, /* ioctl */
1914: { &vop_poll_desc, msdosfs_poll }, /* poll */
1915: { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */
1916: { &vop_revoke_desc, msdosfs_revoke }, /* revoke */
1917: { &vop_mmap_desc, msdosfs_mmap }, /* mmap */
1918: { &vop_fsync_desc, msdosfs_fsync }, /* fsync */
1919: { &vop_seek_desc, msdosfs_seek }, /* seek */
1920: { &vop_remove_desc, msdosfs_remove }, /* remove */
1921: { &vop_link_desc, msdosfs_link }, /* link */
1922: { &vop_rename_desc, msdosfs_rename }, /* rename */
1923: { &vop_mkdir_desc, msdosfs_mkdir }, /* mkdir */
1924: { &vop_rmdir_desc, msdosfs_rmdir }, /* rmdir */
1925: { &vop_symlink_desc, msdosfs_symlink }, /* symlink */
1926: { &vop_readdir_desc, msdosfs_readdir }, /* readdir */
1927: { &vop_readlink_desc, msdosfs_readlink }, /* readlink */
1928: { &vop_abortop_desc, msdosfs_abortop }, /* abortop */
1929: { &vop_inactive_desc, msdosfs_inactive }, /* inactive */
1930: { &vop_reclaim_desc, msdosfs_reclaim }, /* reclaim */
1931: { &vop_lock_desc, genfs_lock }, /* lock */
1932: { &vop_unlock_desc, genfs_unlock }, /* unlock */
1933: { &vop_bmap_desc, msdosfs_bmap }, /* bmap */
1934: { &vop_strategy_desc, msdosfs_strategy }, /* strategy */
1935: { &vop_print_desc, msdosfs_print }, /* print */
1936: { &vop_islocked_desc, genfs_islocked }, /* islocked */
1937: { &vop_pathconf_desc, msdosfs_pathconf }, /* pathconf */
1938: { &vop_advlock_desc, msdosfs_advlock }, /* advlock */
1939: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
1940: { &vop_getpages_desc, genfs_getpages }, /* getpages */
1941: { &vop_putpages_desc, genfs_putpages }, /* putpages */
1942: { NULL, NULL }
1943: };
1944: const struct vnodeopv_desc msdosfs_vnodeop_opv_desc =
1945: { &msdosfs_vnodeop_p, msdosfs_vnodeop_entries };
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