~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/fs/xfs/xfs_iops.c

Version: ~ [ linux-5.5-rc1 ] ~ [ linux-5.4.2 ] ~ [ linux-5.3.15 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.88 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.158 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.206 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.206 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.78 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * Copyright (c) 2000-2005 Silicon Graphics, Inc.
  3  * All Rights Reserved.
  4  *
  5  * This program is free software; you can redistribute it and/or
  6  * modify it under the terms of the GNU General Public License as
  7  * published by the Free Software Foundation.
  8  *
  9  * This program is distributed in the hope that it would be useful,
 10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12  * GNU General Public License for more details.
 13  *
 14  * You should have received a copy of the GNU General Public License
 15  * along with this program; if not, write the Free Software Foundation,
 16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 17  */
 18 #include "xfs.h"
 19 #include "xfs_fs.h"
 20 #include "xfs_acl.h"
 21 #include "xfs_log.h"
 22 #include "xfs_trans.h"
 23 #include "xfs_sb.h"
 24 #include "xfs_ag.h"
 25 #include "xfs_alloc.h"
 26 #include "xfs_quota.h"
 27 #include "xfs_mount.h"
 28 #include "xfs_bmap_btree.h"
 29 #include "xfs_dinode.h"
 30 #include "xfs_inode.h"
 31 #include "xfs_bmap.h"
 32 #include "xfs_rtalloc.h"
 33 #include "xfs_error.h"
 34 #include "xfs_itable.h"
 35 #include "xfs_attr.h"
 36 #include "xfs_buf_item.h"
 37 #include "xfs_utils.h"
 38 #include "xfs_vnodeops.h"
 39 #include "xfs_inode_item.h"
 40 #include "xfs_trace.h"
 41 #include "xfs_icache.h"
 42 
 43 #include <linux/capability.h>
 44 #include <linux/xattr.h>
 45 #include <linux/namei.h>
 46 #include <linux/posix_acl.h>
 47 #include <linux/security.h>
 48 #include <linux/fiemap.h>
 49 #include <linux/slab.h>
 50 
 51 static int
 52 xfs_initxattrs(
 53         struct inode            *inode,
 54         const struct xattr      *xattr_array,
 55         void                    *fs_info)
 56 {
 57         const struct xattr      *xattr;
 58         struct xfs_inode        *ip = XFS_I(inode);
 59         int                     error = 0;
 60 
 61         for (xattr = xattr_array; xattr->name != NULL; xattr++) {
 62                 error = xfs_attr_set(ip, xattr->name, xattr->value,
 63                                      xattr->value_len, ATTR_SECURE);
 64                 if (error < 0)
 65                         break;
 66         }
 67         return error;
 68 }
 69 
 70 /*
 71  * Hook in SELinux.  This is not quite correct yet, what we really need
 72  * here (as we do for default ACLs) is a mechanism by which creation of
 73  * these attrs can be journalled at inode creation time (along with the
 74  * inode, of course, such that log replay can't cause these to be lost).
 75  */
 76 
 77 STATIC int
 78 xfs_init_security(
 79         struct inode    *inode,
 80         struct inode    *dir,
 81         const struct qstr *qstr)
 82 {
 83         return security_inode_init_security(inode, dir, qstr,
 84                                             &xfs_initxattrs, NULL);
 85 }
 86 
 87 static void
 88 xfs_dentry_to_name(
 89         struct xfs_name *namep,
 90         struct dentry   *dentry)
 91 {
 92         namep->name = dentry->d_name.name;
 93         namep->len = dentry->d_name.len;
 94 }
 95 
 96 STATIC void
 97 xfs_cleanup_inode(
 98         struct inode    *dir,
 99         struct inode    *inode,
100         struct dentry   *dentry)
101 {
102         struct xfs_name teardown;
103 
104         /* Oh, the horror.
105          * If we can't add the ACL or we fail in
106          * xfs_init_security we must back out.
107          * ENOSPC can hit here, among other things.
108          */
109         xfs_dentry_to_name(&teardown, dentry);
110 
111         xfs_remove(XFS_I(dir), &teardown, XFS_I(inode));
112         iput(inode);
113 }
114 
115 STATIC int
116 xfs_vn_mknod(
117         struct inode    *dir,
118         struct dentry   *dentry,
119         umode_t         mode,
120         dev_t           rdev)
121 {
122         struct inode    *inode;
123         struct xfs_inode *ip = NULL;
124         struct posix_acl *default_acl = NULL;
125         struct xfs_name name;
126         int             error;
127 
128         /*
129          * Irix uses Missed'em'V split, but doesn't want to see
130          * the upper 5 bits of (14bit) major.
131          */
132         if (S_ISCHR(mode) || S_ISBLK(mode)) {
133                 if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff))
134                         return -EINVAL;
135                 rdev = sysv_encode_dev(rdev);
136         } else {
137                 rdev = 0;
138         }
139 
140         if (IS_POSIXACL(dir)) {
141                 default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT);
142                 if (IS_ERR(default_acl))
143                         return PTR_ERR(default_acl);
144 
145                 if (!default_acl)
146                         mode &= ~current_umask();
147         }
148 
149         xfs_dentry_to_name(&name, dentry);
150         error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip);
151         if (unlikely(error))
152                 goto out_free_acl;
153 
154         inode = VFS_I(ip);
155 
156         error = xfs_init_security(inode, dir, &dentry->d_name);
157         if (unlikely(error))
158                 goto out_cleanup_inode;
159 
160         if (default_acl) {
161                 error = -xfs_inherit_acl(inode, default_acl);
162                 default_acl = NULL;
163                 if (unlikely(error))
164                         goto out_cleanup_inode;
165         }
166 
167 
168         d_instantiate(dentry, inode);
169         return -error;
170 
171  out_cleanup_inode:
172         xfs_cleanup_inode(dir, inode, dentry);
173  out_free_acl:
174         posix_acl_release(default_acl);
175         return -error;
176 }
177 
178 STATIC int
179 xfs_vn_create(
180         struct inode    *dir,
181         struct dentry   *dentry,
182         umode_t         mode,
183         bool            flags)
184 {
185         return xfs_vn_mknod(dir, dentry, mode, 0);
186 }
187 
188 STATIC int
189 xfs_vn_mkdir(
190         struct inode    *dir,
191         struct dentry   *dentry,
192         umode_t         mode)
193 {
194         return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0);
195 }
196 
197 STATIC struct dentry *
198 xfs_vn_lookup(
199         struct inode    *dir,
200         struct dentry   *dentry,
201         unsigned int flags)
202 {
203         struct xfs_inode *cip;
204         struct xfs_name name;
205         int             error;
206 
207         if (dentry->d_name.len >= MAXNAMELEN)
208                 return ERR_PTR(-ENAMETOOLONG);
209 
210         xfs_dentry_to_name(&name, dentry);
211         error = xfs_lookup(XFS_I(dir), &name, &cip, NULL);
212         if (unlikely(error)) {
213                 if (unlikely(error != ENOENT))
214                         return ERR_PTR(-error);
215                 d_add(dentry, NULL);
216                 return NULL;
217         }
218 
219         return d_splice_alias(VFS_I(cip), dentry);
220 }
221 
222 STATIC struct dentry *
223 xfs_vn_ci_lookup(
224         struct inode    *dir,
225         struct dentry   *dentry,
226         unsigned int flags)
227 {
228         struct xfs_inode *ip;
229         struct xfs_name xname;
230         struct xfs_name ci_name;
231         struct qstr     dname;
232         int             error;
233 
234         if (dentry->d_name.len >= MAXNAMELEN)
235                 return ERR_PTR(-ENAMETOOLONG);
236 
237         xfs_dentry_to_name(&xname, dentry);
238         error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name);
239         if (unlikely(error)) {
240                 if (unlikely(error != ENOENT))
241                         return ERR_PTR(-error);
242                 /*
243                  * call d_add(dentry, NULL) here when d_drop_negative_children
244                  * is called in xfs_vn_mknod (ie. allow negative dentries
245                  * with CI filesystems).
246                  */
247                 return NULL;
248         }
249 
250         /* if exact match, just splice and exit */
251         if (!ci_name.name)
252                 return d_splice_alias(VFS_I(ip), dentry);
253 
254         /* else case-insensitive match... */
255         dname.name = ci_name.name;
256         dname.len = ci_name.len;
257         dentry = d_add_ci(dentry, VFS_I(ip), &dname);
258         kmem_free(ci_name.name);
259         return dentry;
260 }
261 
262 STATIC int
263 xfs_vn_link(
264         struct dentry   *old_dentry,
265         struct inode    *dir,
266         struct dentry   *dentry)
267 {
268         struct inode    *inode = old_dentry->d_inode;
269         struct xfs_name name;
270         int             error;
271 
272         xfs_dentry_to_name(&name, dentry);
273 
274         error = xfs_link(XFS_I(dir), XFS_I(inode), &name);
275         if (unlikely(error))
276                 return -error;
277 
278         ihold(inode);
279         d_instantiate(dentry, inode);
280         return 0;
281 }
282 
283 STATIC int
284 xfs_vn_unlink(
285         struct inode    *dir,
286         struct dentry   *dentry)
287 {
288         struct xfs_name name;
289         int             error;
290 
291         xfs_dentry_to_name(&name, dentry);
292 
293         error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode));
294         if (error)
295                 return error;
296 
297         /*
298          * With unlink, the VFS makes the dentry "negative": no inode,
299          * but still hashed. This is incompatible with case-insensitive
300          * mode, so invalidate (unhash) the dentry in CI-mode.
301          */
302         if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb))
303                 d_invalidate(dentry);
304         return 0;
305 }
306 
307 STATIC int
308 xfs_vn_symlink(
309         struct inode    *dir,
310         struct dentry   *dentry,
311         const char      *symname)
312 {
313         struct inode    *inode;
314         struct xfs_inode *cip = NULL;
315         struct xfs_name name;
316         int             error;
317         umode_t         mode;
318 
319         mode = S_IFLNK |
320                 (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO);
321         xfs_dentry_to_name(&name, dentry);
322 
323         error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip);
324         if (unlikely(error))
325                 goto out;
326 
327         inode = VFS_I(cip);
328 
329         error = xfs_init_security(inode, dir, &dentry->d_name);
330         if (unlikely(error))
331                 goto out_cleanup_inode;
332 
333         d_instantiate(dentry, inode);
334         return 0;
335 
336  out_cleanup_inode:
337         xfs_cleanup_inode(dir, inode, dentry);
338  out:
339         return -error;
340 }
341 
342 STATIC int
343 xfs_vn_rename(
344         struct inode    *odir,
345         struct dentry   *odentry,
346         struct inode    *ndir,
347         struct dentry   *ndentry)
348 {
349         struct inode    *new_inode = ndentry->d_inode;
350         struct xfs_name oname;
351         struct xfs_name nname;
352 
353         xfs_dentry_to_name(&oname, odentry);
354         xfs_dentry_to_name(&nname, ndentry);
355 
356         return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode),
357                            XFS_I(ndir), &nname, new_inode ?
358                                                 XFS_I(new_inode) : NULL);
359 }
360 
361 /*
362  * careful here - this function can get called recursively, so
363  * we need to be very careful about how much stack we use.
364  * uio is kmalloced for this reason...
365  */
366 STATIC void *
367 xfs_vn_follow_link(
368         struct dentry           *dentry,
369         struct nameidata        *nd)
370 {
371         char                    *link;
372         int                     error = -ENOMEM;
373 
374         link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
375         if (!link)
376                 goto out_err;
377 
378         error = -xfs_readlink(XFS_I(dentry->d_inode), link);
379         if (unlikely(error))
380                 goto out_kfree;
381 
382         nd_set_link(nd, link);
383         return NULL;
384 
385  out_kfree:
386         kfree(link);
387  out_err:
388         nd_set_link(nd, ERR_PTR(error));
389         return NULL;
390 }
391 
392 STATIC void
393 xfs_vn_put_link(
394         struct dentry   *dentry,
395         struct nameidata *nd,
396         void            *p)
397 {
398         char            *s = nd_get_link(nd);
399 
400         if (!IS_ERR(s))
401                 kfree(s);
402 }
403 
404 STATIC int
405 xfs_vn_getattr(
406         struct vfsmount         *mnt,
407         struct dentry           *dentry,
408         struct kstat            *stat)
409 {
410         struct inode            *inode = dentry->d_inode;
411         struct xfs_inode        *ip = XFS_I(inode);
412         struct xfs_mount        *mp = ip->i_mount;
413 
414         trace_xfs_getattr(ip);
415 
416         if (XFS_FORCED_SHUTDOWN(mp))
417                 return -XFS_ERROR(EIO);
418 
419         stat->size = XFS_ISIZE(ip);
420         stat->dev = inode->i_sb->s_dev;
421         stat->mode = ip->i_d.di_mode;
422         stat->nlink = ip->i_d.di_nlink;
423         stat->uid = ip->i_d.di_uid;
424         stat->gid = ip->i_d.di_gid;
425         stat->ino = ip->i_ino;
426         stat->atime = inode->i_atime;
427         stat->mtime = inode->i_mtime;
428         stat->ctime = inode->i_ctime;
429         stat->blocks =
430                 XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
431 
432 
433         switch (inode->i_mode & S_IFMT) {
434         case S_IFBLK:
435         case S_IFCHR:
436                 stat->blksize = BLKDEV_IOSIZE;
437                 stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
438                                    sysv_minor(ip->i_df.if_u2.if_rdev));
439                 break;
440         default:
441                 if (XFS_IS_REALTIME_INODE(ip)) {
442                         /*
443                          * If the file blocks are being allocated from a
444                          * realtime volume, then return the inode's realtime
445                          * extent size or the realtime volume's extent size.
446                          */
447                         stat->blksize =
448                                 xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog;
449                 } else
450                         stat->blksize = xfs_preferred_iosize(mp);
451                 stat->rdev = 0;
452                 break;
453         }
454 
455         return 0;
456 }
457 
458 static void
459 xfs_setattr_mode(
460         struct xfs_trans        *tp,
461         struct xfs_inode        *ip,
462         struct iattr            *iattr)
463 {
464         struct inode    *inode = VFS_I(ip);
465         umode_t         mode = iattr->ia_mode;
466 
467         ASSERT(tp);
468         ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
469 
470         ip->i_d.di_mode &= S_IFMT;
471         ip->i_d.di_mode |= mode & ~S_IFMT;
472 
473         inode->i_mode &= S_IFMT;
474         inode->i_mode |= mode & ~S_IFMT;
475 }
476 
477 int
478 xfs_setattr_nonsize(
479         struct xfs_inode        *ip,
480         struct iattr            *iattr,
481         int                     flags)
482 {
483         xfs_mount_t             *mp = ip->i_mount;
484         struct inode            *inode = VFS_I(ip);
485         int                     mask = iattr->ia_valid;
486         xfs_trans_t             *tp;
487         int                     error;
488         uid_t                   uid = 0, iuid = 0;
489         gid_t                   gid = 0, igid = 0;
490         struct xfs_dquot        *udqp = NULL, *gdqp = NULL;
491         struct xfs_dquot        *olddquot1 = NULL, *olddquot2 = NULL;
492 
493         trace_xfs_setattr(ip);
494 
495         /* If acls are being inherited, we already have this checked */
496         if (!(flags & XFS_ATTR_NOACL)) {
497                 if (mp->m_flags & XFS_MOUNT_RDONLY)
498                         return XFS_ERROR(EROFS);
499 
500                 if (XFS_FORCED_SHUTDOWN(mp))
501                         return XFS_ERROR(EIO);
502 
503                 error = -inode_change_ok(inode, iattr);
504                 if (error)
505                         return XFS_ERROR(error);
506         }
507 
508         ASSERT((mask & ATTR_SIZE) == 0);
509 
510         /*
511          * If disk quotas is on, we make sure that the dquots do exist on disk,
512          * before we start any other transactions. Trying to do this later
513          * is messy. We don't care to take a readlock to look at the ids
514          * in inode here, because we can't hold it across the trans_reserve.
515          * If the IDs do change before we take the ilock, we're covered
516          * because the i_*dquot fields will get updated anyway.
517          */
518         if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) {
519                 uint    qflags = 0;
520 
521                 if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) {
522                         uid = iattr->ia_uid;
523                         qflags |= XFS_QMOPT_UQUOTA;
524                 } else {
525                         uid = ip->i_d.di_uid;
526                 }
527                 if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) {
528                         gid = iattr->ia_gid;
529                         qflags |= XFS_QMOPT_GQUOTA;
530                 }  else {
531                         gid = ip->i_d.di_gid;
532                 }
533 
534                 /*
535                  * We take a reference when we initialize udqp and gdqp,
536                  * so it is important that we never blindly double trip on
537                  * the same variable. See xfs_create() for an example.
538                  */
539                 ASSERT(udqp == NULL);
540                 ASSERT(gdqp == NULL);
541                 error = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip),
542                                          qflags, &udqp, &gdqp, NULL);
543                 if (error)
544                         return error;
545         }
546 
547         tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
548         error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0);
549         if (error)
550                 goto out_dqrele;
551 
552         xfs_ilock(ip, XFS_ILOCK_EXCL);
553 
554         /*
555          * Change file ownership.  Must be the owner or privileged.
556          */
557         if (mask & (ATTR_UID|ATTR_GID)) {
558                 /*
559                  * These IDs could have changed since we last looked at them.
560                  * But, we're assured that if the ownership did change
561                  * while we didn't have the inode locked, inode's dquot(s)
562                  * would have changed also.
563                  */
564                 iuid = ip->i_d.di_uid;
565                 igid = ip->i_d.di_gid;
566                 gid = (mask & ATTR_GID) ? iattr->ia_gid : igid;
567                 uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid;
568 
569                 /*
570                  * Do a quota reservation only if uid/gid is actually
571                  * going to change.
572                  */
573                 if (XFS_IS_QUOTA_RUNNING(mp) &&
574                     ((XFS_IS_UQUOTA_ON(mp) && iuid != uid) ||
575                      (XFS_IS_GQUOTA_ON(mp) && igid != gid))) {
576                         ASSERT(tp);
577                         error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp,
578                                                 NULL, capable(CAP_FOWNER) ?
579                                                 XFS_QMOPT_FORCE_RES : 0);
580                         if (error)      /* out of quota */
581                                 goto out_trans_cancel;
582                 }
583         }
584 
585         xfs_trans_ijoin(tp, ip, 0);
586 
587         /*
588          * Change file ownership.  Must be the owner or privileged.
589          */
590         if (mask & (ATTR_UID|ATTR_GID)) {
591                 /*
592                  * CAP_FSETID overrides the following restrictions:
593                  *
594                  * The set-user-ID and set-group-ID bits of a file will be
595                  * cleared upon successful return from chown()
596                  */
597                 if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) &&
598                     !capable(CAP_FSETID))
599                         ip->i_d.di_mode &= ~(S_ISUID|S_ISGID);
600 
601                 /*
602                  * Change the ownerships and register quota modifications
603                  * in the transaction.
604                  */
605                 if (iuid != uid) {
606                         if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) {
607                                 ASSERT(mask & ATTR_UID);
608                                 ASSERT(udqp);
609                                 olddquot1 = xfs_qm_vop_chown(tp, ip,
610                                                         &ip->i_udquot, udqp);
611                         }
612                         ip->i_d.di_uid = uid;
613                         inode->i_uid = uid;
614                 }
615                 if (igid != gid) {
616                         if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) {
617                                 ASSERT(!XFS_IS_PQUOTA_ON(mp));
618                                 ASSERT(mask & ATTR_GID);
619                                 ASSERT(gdqp);
620                                 olddquot2 = xfs_qm_vop_chown(tp, ip,
621                                                         &ip->i_gdquot, gdqp);
622                         }
623                         ip->i_d.di_gid = gid;
624                         inode->i_gid = gid;
625                 }
626         }
627 
628         /*
629          * Change file access modes.
630          */
631         if (mask & ATTR_MODE)
632                 xfs_setattr_mode(tp, ip, iattr);
633 
634         /*
635          * Change file access or modified times.
636          */
637         if (mask & ATTR_ATIME) {
638                 inode->i_atime = iattr->ia_atime;
639                 ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec;
640                 ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec;
641         }
642         if (mask & ATTR_CTIME) {
643                 inode->i_ctime = iattr->ia_ctime;
644                 ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec;
645                 ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec;
646         }
647         if (mask & ATTR_MTIME) {
648                 inode->i_mtime = iattr->ia_mtime;
649                 ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
650                 ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
651         }
652 
653         xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
654 
655         XFS_STATS_INC(xs_ig_attrchg);
656 
657         if (mp->m_flags & XFS_MOUNT_WSYNC)
658                 xfs_trans_set_sync(tp);
659         error = xfs_trans_commit(tp, 0);
660 
661         xfs_iunlock(ip, XFS_ILOCK_EXCL);
662 
663         /*
664          * Release any dquot(s) the inode had kept before chown.
665          */
666         xfs_qm_dqrele(olddquot1);
667         xfs_qm_dqrele(olddquot2);
668         xfs_qm_dqrele(udqp);
669         xfs_qm_dqrele(gdqp);
670 
671         if (error)
672                 return XFS_ERROR(error);
673 
674         /*
675          * XXX(hch): Updating the ACL entries is not atomic vs the i_mode
676          *           update.  We could avoid this with linked transactions
677          *           and passing down the transaction pointer all the way
678          *           to attr_set.  No previous user of the generic
679          *           Posix ACL code seems to care about this issue either.
680          */
681         if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) {
682                 error = -xfs_acl_chmod(inode);
683                 if (error)
684                         return XFS_ERROR(error);
685         }
686 
687         return 0;
688 
689 out_trans_cancel:
690         xfs_trans_cancel(tp, 0);
691         xfs_iunlock(ip, XFS_ILOCK_EXCL);
692 out_dqrele:
693         xfs_qm_dqrele(udqp);
694         xfs_qm_dqrele(gdqp);
695         return error;
696 }
697 
698 /*
699  * Truncate file.  Must have write permission and not be a directory.
700  */
701 int
702 xfs_setattr_size(
703         struct xfs_inode        *ip,
704         struct iattr            *iattr,
705         int                     flags)
706 {
707         struct xfs_mount        *mp = ip->i_mount;
708         struct inode            *inode = VFS_I(ip);
709         int                     mask = iattr->ia_valid;
710         xfs_off_t               oldsize, newsize;
711         struct xfs_trans        *tp;
712         int                     error;
713         uint                    lock_flags = 0;
714         uint                    commit_flags = 0;
715 
716         trace_xfs_setattr(ip);
717 
718         if (mp->m_flags & XFS_MOUNT_RDONLY)
719                 return XFS_ERROR(EROFS);
720 
721         if (XFS_FORCED_SHUTDOWN(mp))
722                 return XFS_ERROR(EIO);
723 
724         error = -inode_change_ok(inode, iattr);
725         if (error)
726                 return XFS_ERROR(error);
727 
728         ASSERT(S_ISREG(ip->i_d.di_mode));
729         ASSERT((mask & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET|
730                         ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0);
731 
732         if (!(flags & XFS_ATTR_NOLOCK)) {
733                 lock_flags |= XFS_IOLOCK_EXCL;
734                 xfs_ilock(ip, lock_flags);
735         }
736 
737         oldsize = inode->i_size;
738         newsize = iattr->ia_size;
739 
740         /*
741          * Short circuit the truncate case for zero length files.
742          */
743         if (newsize == 0 && oldsize == 0 && ip->i_d.di_nextents == 0) {
744                 if (!(mask & (ATTR_CTIME|ATTR_MTIME)))
745                         goto out_unlock;
746 
747                 /*
748                  * Use the regular setattr path to update the timestamps.
749                  */
750                 xfs_iunlock(ip, lock_flags);
751                 iattr->ia_valid &= ~ATTR_SIZE;
752                 return xfs_setattr_nonsize(ip, iattr, 0);
753         }
754 
755         /*
756          * Make sure that the dquots are attached to the inode.
757          */
758         error = xfs_qm_dqattach(ip, 0);
759         if (error)
760                 goto out_unlock;
761 
762         /*
763          * Now we can make the changes.  Before we join the inode to the
764          * transaction, take care of the part of the truncation that must be
765          * done without the inode lock.  This needs to be done before joining
766          * the inode to the transaction, because the inode cannot be unlocked
767          * once it is a part of the transaction.
768          */
769         if (newsize > oldsize) {
770                 /*
771                  * Do the first part of growing a file: zero any data in the
772                  * last block that is beyond the old EOF.  We need to do this
773                  * before the inode is joined to the transaction to modify
774                  * i_size.
775                  */
776                 error = xfs_zero_eof(ip, newsize, oldsize);
777                 if (error)
778                         goto out_unlock;
779         }
780 
781         /*
782          * We are going to log the inode size change in this transaction so
783          * any previous writes that are beyond the on disk EOF and the new
784          * EOF that have not been written out need to be written here.  If we
785          * do not write the data out, we expose ourselves to the null files
786          * problem.
787          *
788          * Only flush from the on disk size to the smaller of the in memory
789          * file size or the new size as that's the range we really care about
790          * here and prevents waiting for other data not within the range we
791          * care about here.
792          */
793         if (oldsize != ip->i_d.di_size && newsize > ip->i_d.di_size) {
794                 error = -filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
795                                                       ip->i_d.di_size, newsize);
796                 if (error)
797                         goto out_unlock;
798         }
799 
800         /*
801          * Wait for all direct I/O to complete.
802          */
803         inode_dio_wait(inode);
804 
805         error = -block_truncate_page(inode->i_mapping, newsize, xfs_get_blocks);
806         if (error)
807                 goto out_unlock;
808 
809         tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE);
810         error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0,
811                                  XFS_TRANS_PERM_LOG_RES,
812                                  XFS_ITRUNCATE_LOG_COUNT);
813         if (error)
814                 goto out_trans_cancel;
815 
816         truncate_setsize(inode, newsize);
817 
818         commit_flags = XFS_TRANS_RELEASE_LOG_RES;
819         lock_flags |= XFS_ILOCK_EXCL;
820 
821         xfs_ilock(ip, XFS_ILOCK_EXCL);
822 
823         xfs_trans_ijoin(tp, ip, 0);
824 
825         /*
826          * Only change the c/mtime if we are changing the size or we are
827          * explicitly asked to change it.  This handles the semantic difference
828          * between truncate() and ftruncate() as implemented in the VFS.
829          *
830          * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a
831          * special case where we need to update the times despite not having
832          * these flags set.  For all other operations the VFS set these flags
833          * explicitly if it wants a timestamp update.
834          */
835         if (newsize != oldsize && (!(mask & (ATTR_CTIME | ATTR_MTIME)))) {
836                 iattr->ia_ctime = iattr->ia_mtime =
837                         current_fs_time(inode->i_sb);
838                 mask |= ATTR_CTIME | ATTR_MTIME;
839         }
840 
841         /*
842          * The first thing we do is set the size to new_size permanently on
843          * disk.  This way we don't have to worry about anyone ever being able
844          * to look at the data being freed even in the face of a crash.
845          * What we're getting around here is the case where we free a block, it
846          * is allocated to another file, it is written to, and then we crash.
847          * If the new data gets written to the file but the log buffers
848          * containing the free and reallocation don't, then we'd end up with
849          * garbage in the blocks being freed.  As long as we make the new size
850          * permanent before actually freeing any blocks it doesn't matter if
851          * they get written to.
852          */
853         ip->i_d.di_size = newsize;
854         xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
855 
856         if (newsize <= oldsize) {
857                 error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, newsize);
858                 if (error)
859                         goto out_trans_abort;
860 
861                 /*
862                  * Truncated "down", so we're removing references to old data
863                  * here - if we delay flushing for a long time, we expose
864                  * ourselves unduly to the notorious NULL files problem.  So,
865                  * we mark this inode and flush it when the file is closed,
866                  * and do not wait the usual (long) time for writeout.
867                  */
868                 xfs_iflags_set(ip, XFS_ITRUNCATED);
869 
870                 /* A truncate down always removes post-EOF blocks. */
871                 xfs_inode_clear_eofblocks_tag(ip);
872         }
873 
874         /*
875          * Change file access modes.
876          */
877         if (mask & ATTR_MODE)
878                 xfs_setattr_mode(tp, ip, iattr);
879 
880         if (mask & ATTR_CTIME) {
881                 inode->i_ctime = iattr->ia_ctime;
882                 ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec;
883                 ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec;
884         }
885         if (mask & ATTR_MTIME) {
886                 inode->i_mtime = iattr->ia_mtime;
887                 ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
888                 ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
889         }
890 
891         xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
892 
893         XFS_STATS_INC(xs_ig_attrchg);
894 
895         if (mp->m_flags & XFS_MOUNT_WSYNC)
896                 xfs_trans_set_sync(tp);
897 
898         error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
899 out_unlock:
900         if (lock_flags)
901                 xfs_iunlock(ip, lock_flags);
902         return error;
903 
904 out_trans_abort:
905         commit_flags |= XFS_TRANS_ABORT;
906 out_trans_cancel:
907         xfs_trans_cancel(tp, commit_flags);
908         goto out_unlock;
909 }
910 
911 STATIC int
912 xfs_vn_setattr(
913         struct dentry   *dentry,
914         struct iattr    *iattr)
915 {
916         if (iattr->ia_valid & ATTR_SIZE)
917                 return -xfs_setattr_size(XFS_I(dentry->d_inode), iattr, 0);
918         return -xfs_setattr_nonsize(XFS_I(dentry->d_inode), iattr, 0);
919 }
920 
921 STATIC int
922 xfs_vn_update_time(
923         struct inode            *inode,
924         struct timespec         *now,
925         int                     flags)
926 {
927         struct xfs_inode        *ip = XFS_I(inode);
928         struct xfs_mount        *mp = ip->i_mount;
929         struct xfs_trans        *tp;
930         int                     error;
931 
932         trace_xfs_update_time(ip);
933 
934         tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS);
935         error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0);
936         if (error) {
937                 xfs_trans_cancel(tp, 0);
938                 return -error;
939         }
940 
941         xfs_ilock(ip, XFS_ILOCK_EXCL);
942         if (flags & S_CTIME) {
943                 inode->i_ctime = *now;
944                 ip->i_d.di_ctime.t_sec = (__int32_t)now->tv_sec;
945                 ip->i_d.di_ctime.t_nsec = (__int32_t)now->tv_nsec;
946         }
947         if (flags & S_MTIME) {
948                 inode->i_mtime = *now;
949                 ip->i_d.di_mtime.t_sec = (__int32_t)now->tv_sec;
950                 ip->i_d.di_mtime.t_nsec = (__int32_t)now->tv_nsec;
951         }
952         if (flags & S_ATIME) {
953                 inode->i_atime = *now;
954                 ip->i_d.di_atime.t_sec = (__int32_t)now->tv_sec;
955                 ip->i_d.di_atime.t_nsec = (__int32_t)now->tv_nsec;
956         }
957         xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
958         xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP);
959         return -xfs_trans_commit(tp, 0);
960 }
961 
962 #define XFS_FIEMAP_FLAGS        (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR)
963 
964 /*
965  * Call fiemap helper to fill in user data.
966  * Returns positive errors to xfs_getbmap.
967  */
968 STATIC int
969 xfs_fiemap_format(
970         void                    **arg,
971         struct getbmapx         *bmv,
972         int                     *full)
973 {
974         int                     error;
975         struct fiemap_extent_info *fieinfo = *arg;
976         u32                     fiemap_flags = 0;
977         u64                     logical, physical, length;
978 
979         /* Do nothing for a hole */
980         if (bmv->bmv_block == -1LL)
981                 return 0;
982 
983         logical = BBTOB(bmv->bmv_offset);
984         physical = BBTOB(bmv->bmv_block);
985         length = BBTOB(bmv->bmv_length);
986 
987         if (bmv->bmv_oflags & BMV_OF_PREALLOC)
988                 fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN;
989         else if (bmv->bmv_oflags & BMV_OF_DELALLOC) {
990                 fiemap_flags |= (FIEMAP_EXTENT_DELALLOC |
991                                  FIEMAP_EXTENT_UNKNOWN);
992                 physical = 0;   /* no block yet */
993         }
994         if (bmv->bmv_oflags & BMV_OF_LAST)
995                 fiemap_flags |= FIEMAP_EXTENT_LAST;
996 
997         error = fiemap_fill_next_extent(fieinfo, logical, physical,
998                                         length, fiemap_flags);
999         if (error > 0) {
1000                 error = 0;
1001                 *full = 1;      /* user array now full */
1002         }
1003 
1004         return -error;
1005 }
1006 
1007 STATIC int
1008 xfs_vn_fiemap(
1009         struct inode            *inode,
1010         struct fiemap_extent_info *fieinfo,
1011         u64                     start,
1012         u64                     length)
1013 {
1014         xfs_inode_t             *ip = XFS_I(inode);
1015         struct getbmapx         bm;
1016         int                     error;
1017 
1018         error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS);
1019         if (error)
1020                 return error;
1021 
1022         /* Set up bmap header for xfs internal routine */
1023         bm.bmv_offset = BTOBB(start);
1024         /* Special case for whole file */
1025         if (length == FIEMAP_MAX_OFFSET)
1026                 bm.bmv_length = -1LL;
1027         else
1028                 bm.bmv_length = BTOBB(length);
1029 
1030         /* We add one because in getbmap world count includes the header */
1031         bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM :
1032                                         fieinfo->fi_extents_max + 1;
1033         bm.bmv_count = min_t(__s32, bm.bmv_count,
1034                              (PAGE_SIZE * 16 / sizeof(struct getbmapx)));
1035         bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES;
1036         if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR)
1037                 bm.bmv_iflags |= BMV_IF_ATTRFORK;
1038         if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC))
1039                 bm.bmv_iflags |= BMV_IF_DELALLOC;
1040 
1041         error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo);
1042         if (error)
1043                 return -error;
1044 
1045         return 0;
1046 }
1047 
1048 static const struct inode_operations xfs_inode_operations = {
1049         .get_acl                = xfs_get_acl,
1050         .getattr                = xfs_vn_getattr,
1051         .setattr                = xfs_vn_setattr,
1052         .setxattr               = generic_setxattr,
1053         .getxattr               = generic_getxattr,
1054         .removexattr            = generic_removexattr,
1055         .listxattr              = xfs_vn_listxattr,
1056         .fiemap                 = xfs_vn_fiemap,
1057         .update_time            = xfs_vn_update_time,
1058 };
1059 
1060 static const struct inode_operations xfs_dir_inode_operations = {
1061         .create                 = xfs_vn_create,
1062         .lookup                 = xfs_vn_lookup,
1063         .link                   = xfs_vn_link,
1064         .unlink                 = xfs_vn_unlink,
1065         .symlink                = xfs_vn_symlink,
1066         .mkdir                  = xfs_vn_mkdir,
1067         /*
1068          * Yes, XFS uses the same method for rmdir and unlink.
1069          *
1070          * There are some subtile differences deeper in the code,
1071          * but we use S_ISDIR to check for those.
1072          */
1073         .rmdir                  = xfs_vn_unlink,
1074         .mknod                  = xfs_vn_mknod,
1075         .rename                 = xfs_vn_rename,
1076         .get_acl                = xfs_get_acl,
1077         .getattr                = xfs_vn_getattr,
1078         .setattr                = xfs_vn_setattr,
1079         .setxattr               = generic_setxattr,
1080         .getxattr               = generic_getxattr,
1081         .removexattr            = generic_removexattr,
1082         .listxattr              = xfs_vn_listxattr,
1083         .update_time            = xfs_vn_update_time,
1084 };
1085 
1086 static const struct inode_operations xfs_dir_ci_inode_operations = {
1087         .create                 = xfs_vn_create,
1088         .lookup                 = xfs_vn_ci_lookup,
1089         .link                   = xfs_vn_link,
1090         .unlink                 = xfs_vn_unlink,
1091         .symlink                = xfs_vn_symlink,
1092         .mkdir                  = xfs_vn_mkdir,
1093         /*
1094          * Yes, XFS uses the same method for rmdir and unlink.
1095          *
1096          * There are some subtile differences deeper in the code,
1097          * but we use S_ISDIR to check for those.
1098          */
1099         .rmdir                  = xfs_vn_unlink,
1100         .mknod                  = xfs_vn_mknod,
1101         .rename                 = xfs_vn_rename,
1102         .get_acl                = xfs_get_acl,
1103         .getattr                = xfs_vn_getattr,
1104         .setattr                = xfs_vn_setattr,
1105         .setxattr               = generic_setxattr,
1106         .getxattr               = generic_getxattr,
1107         .removexattr            = generic_removexattr,
1108         .listxattr              = xfs_vn_listxattr,
1109         .update_time            = xfs_vn_update_time,
1110 };
1111 
1112 static const struct inode_operations xfs_symlink_inode_operations = {
1113         .readlink               = generic_readlink,
1114         .follow_link            = xfs_vn_follow_link,
1115         .put_link               = xfs_vn_put_link,
1116         .get_acl                = xfs_get_acl,
1117         .getattr                = xfs_vn_getattr,
1118         .setattr                = xfs_vn_setattr,
1119         .setxattr               = generic_setxattr,
1120         .getxattr               = generic_getxattr,
1121         .removexattr            = generic_removexattr,
1122         .listxattr              = xfs_vn_listxattr,
1123         .update_time            = xfs_vn_update_time,
1124 };
1125 
1126 STATIC void
1127 xfs_diflags_to_iflags(
1128         struct inode            *inode,
1129         struct xfs_inode        *ip)
1130 {
1131         if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
1132                 inode->i_flags |= S_IMMUTABLE;
1133         else
1134                 inode->i_flags &= ~S_IMMUTABLE;
1135         if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
1136                 inode->i_flags |= S_APPEND;
1137         else
1138                 inode->i_flags &= ~S_APPEND;
1139         if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
1140                 inode->i_flags |= S_SYNC;
1141         else
1142                 inode->i_flags &= ~S_SYNC;
1143         if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
1144                 inode->i_flags |= S_NOATIME;
1145         else
1146                 inode->i_flags &= ~S_NOATIME;
1147 }
1148 
1149 /*
1150  * Initialize the Linux inode, set up the operation vectors and
1151  * unlock the inode.
1152  *
1153  * When reading existing inodes from disk this is called directly
1154  * from xfs_iget, when creating a new inode it is called from
1155  * xfs_ialloc after setting up the inode.
1156  *
1157  * We are always called with an uninitialised linux inode here.
1158  * We need to initialise the necessary fields and take a reference
1159  * on it.
1160  */
1161 void
1162 xfs_setup_inode(
1163         struct xfs_inode        *ip)
1164 {
1165         struct inode            *inode = &ip->i_vnode;
1166 
1167         inode->i_ino = ip->i_ino;
1168         inode->i_state = I_NEW;
1169 
1170         inode_sb_list_add(inode);
1171         /* make the inode look hashed for the writeback code */
1172         hlist_add_fake(&inode->i_hash);
1173 
1174         inode->i_mode   = ip->i_d.di_mode;
1175         set_nlink(inode, ip->i_d.di_nlink);
1176         inode->i_uid    = ip->i_d.di_uid;
1177         inode->i_gid    = ip->i_d.di_gid;
1178 
1179         switch (inode->i_mode & S_IFMT) {
1180         case S_IFBLK:
1181         case S_IFCHR:
1182                 inode->i_rdev =
1183                         MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
1184                               sysv_minor(ip->i_df.if_u2.if_rdev));
1185                 break;
1186         default:
1187                 inode->i_rdev = 0;
1188                 break;
1189         }
1190 
1191         inode->i_generation = ip->i_d.di_gen;
1192         i_size_write(inode, ip->i_d.di_size);
1193         inode->i_atime.tv_sec   = ip->i_d.di_atime.t_sec;
1194         inode->i_atime.tv_nsec  = ip->i_d.di_atime.t_nsec;
1195         inode->i_mtime.tv_sec   = ip->i_d.di_mtime.t_sec;
1196         inode->i_mtime.tv_nsec  = ip->i_d.di_mtime.t_nsec;
1197         inode->i_ctime.tv_sec   = ip->i_d.di_ctime.t_sec;
1198         inode->i_ctime.tv_nsec  = ip->i_d.di_ctime.t_nsec;
1199         xfs_diflags_to_iflags(inode, ip);
1200 
1201         switch (inode->i_mode & S_IFMT) {
1202         case S_IFREG:
1203                 inode->i_op = &xfs_inode_operations;
1204                 inode->i_fop = &xfs_file_operations;
1205                 inode->i_mapping->a_ops = &xfs_address_space_operations;
1206                 break;
1207         case S_IFDIR:
1208                 if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb))
1209                         inode->i_op = &xfs_dir_ci_inode_operations;
1210                 else
1211                         inode->i_op = &xfs_dir_inode_operations;
1212                 inode->i_fop = &xfs_dir_file_operations;
1213                 break;
1214         case S_IFLNK:
1215                 inode->i_op = &xfs_symlink_inode_operations;
1216                 if (!(ip->i_df.if_flags & XFS_IFINLINE))
1217                         inode->i_mapping->a_ops = &xfs_address_space_operations;
1218                 break;
1219         default:
1220                 inode->i_op = &xfs_inode_operations;
1221                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
1222                 break;
1223         }
1224 
1225         /*
1226          * If there is no attribute fork no ACL can exist on this inode,
1227          * and it can't have any file capabilities attached to it either.
1228          */
1229         if (!XFS_IFORK_Q(ip)) {
1230                 inode_has_no_xattr(inode);
1231                 cache_no_acl(inode);
1232         }
1233 
1234         xfs_iflags_clear(ip, XFS_INEW);
1235         barrier();
1236 
1237         unlock_new_inode(inode);
1238 }
1239 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp