The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/fs/ext2fs/ext2_vnops.c

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    1 /*-
    2  *  modified for EXT2FS support in Lites 1.1
    3  *
    4  *  Aug 1995, Godmar Back (gback@cs.utah.edu)
    5  *  University of Utah, Department of Computer Science
    6  */
    7 /*-
    8  * Copyright (c) 1982, 1986, 1989, 1993
    9  *      The Regents of the University of California.  All rights reserved.
   10  * (c) UNIX System Laboratories, Inc.
   11  * All or some portions of this file are derived from material licensed
   12  * to the University of California by American Telephone and Telegraph
   13  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
   14  * the permission of UNIX System Laboratories, Inc.
   15  *
   16  * Redistribution and use in source and binary forms, with or without
   17  * modification, are permitted provided that the following conditions
   18  * are met:
   19  * 1. Redistributions of source code must retain the above copyright
   20  *    notice, this list of conditions and the following disclaimer.
   21  * 2. Redistributions in binary form must reproduce the above copyright
   22  *    notice, this list of conditions and the following disclaimer in the
   23  *    documentation and/or other materials provided with the distribution.
   24  * 4. Neither the name of the University nor the names of its contributors
   25  *    may be used to endorse or promote products derived from this software
   26  *    without specific prior written permission.
   27  *
   28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   38  * SUCH DAMAGE.
   39  *
   40  *      @(#)ufs_vnops.c 8.7 (Berkeley) 2/3/94
   41  *      @(#)ufs_vnops.c 8.27 (Berkeley) 5/27/95
   42  * $FreeBSD: stable/11/sys/fs/ext2fs/ext2_vnops.c 342819 2019-01-06 22:34:47Z mckusick $
   43  */
   44 
   45 #include "opt_suiddir.h"
   46 
   47 #include <sys/param.h>
   48 #include <sys/systm.h>
   49 #include <sys/kernel.h>
   50 #include <sys/fcntl.h>
   51 #include <sys/filio.h>
   52 #include <sys/stat.h>
   53 #include <sys/bio.h>
   54 #include <sys/buf.h>
   55 #include <sys/endian.h>
   56 #include <sys/priv.h>
   57 #include <sys/rwlock.h>
   58 #include <sys/mount.h>
   59 #include <sys/unistd.h>
   60 #include <sys/time.h>
   61 #include <sys/vnode.h>
   62 #include <sys/namei.h>
   63 #include <sys/lockf.h>
   64 #include <sys/event.h>
   65 #include <sys/conf.h>
   66 #include <sys/file.h>
   67 #include <sys/extattr.h>
   68 
   69 #include <vm/vm.h>
   70 #include <vm/vm_param.h>
   71 #include <vm/vm_extern.h>
   72 #include <vm/vm_object.h>
   73 #include <vm/vm_page.h>
   74 #include <vm/vm_pager.h>
   75 #include <vm/vnode_pager.h>
   76 
   77 #include "opt_directio.h"
   78 
   79 #include <ufs/ufs/dir.h>
   80 
   81 #include <fs/ext2fs/fs.h>
   82 #include <fs/ext2fs/inode.h>
   83 #include <fs/ext2fs/ext2_acl.h>
   84 #include <fs/ext2fs/ext2_extern.h>
   85 #include <fs/ext2fs/ext2fs.h>
   86 #include <fs/ext2fs/ext2_dinode.h>
   87 #include <fs/ext2fs/ext2_dir.h>
   88 #include <fs/ext2fs/ext2_mount.h>
   89 #include <fs/ext2fs/ext2_extattr.h>
   90 
   91 static int ext2_makeinode(int mode, struct vnode *, struct vnode **, struct componentname *);
   92 static void ext2_itimes_locked(struct vnode *);
   93 static int ext4_ext_read(struct vop_read_args *);
   94 static int ext2_ind_read(struct vop_read_args *);
   95 
   96 static vop_access_t     ext2_access;
   97 static int ext2_chmod(struct vnode *, int, struct ucred *, struct thread *);
   98 static int ext2_chown(struct vnode *, uid_t, gid_t, struct ucred *,
   99     struct thread *);
  100 static vop_close_t      ext2_close;
  101 static vop_create_t     ext2_create;
  102 static vop_fsync_t      ext2_fsync;
  103 static vop_getattr_t    ext2_getattr;
  104 static vop_ioctl_t      ext2_ioctl;
  105 static vop_link_t       ext2_link;
  106 static vop_mkdir_t      ext2_mkdir;
  107 static vop_mknod_t      ext2_mknod;
  108 static vop_open_t       ext2_open;
  109 static vop_pathconf_t   ext2_pathconf;
  110 static vop_print_t      ext2_print;
  111 static vop_read_t       ext2_read;
  112 static vop_readlink_t   ext2_readlink;
  113 static vop_remove_t     ext2_remove;
  114 static vop_rename_t     ext2_rename;
  115 static vop_rmdir_t      ext2_rmdir;
  116 static vop_setattr_t    ext2_setattr;
  117 static vop_strategy_t   ext2_strategy;
  118 static vop_symlink_t    ext2_symlink;
  119 static vop_write_t      ext2_write;
  120 static vop_deleteextattr_t      ext2_deleteextattr;
  121 static vop_getextattr_t ext2_getextattr;
  122 static vop_listextattr_t        ext2_listextattr;
  123 static vop_setextattr_t ext2_setextattr;
  124 static vop_vptofh_t     ext2_vptofh;
  125 static vop_close_t      ext2fifo_close;
  126 static vop_kqfilter_t   ext2fifo_kqfilter;
  127 
  128 /* Global vfs data structures for ext2. */
  129 struct vop_vector ext2_vnodeops = {
  130         .vop_default =          &default_vnodeops,
  131         .vop_access =           ext2_access,
  132         .vop_bmap =             ext2_bmap,
  133         .vop_cachedlookup =     ext2_lookup,
  134         .vop_close =            ext2_close,
  135         .vop_create =           ext2_create,
  136         .vop_fsync =            ext2_fsync,
  137         .vop_getpages =         vnode_pager_local_getpages,
  138         .vop_getpages_async =   vnode_pager_local_getpages_async,
  139         .vop_getattr =          ext2_getattr,
  140         .vop_inactive =         ext2_inactive,
  141         .vop_ioctl =            ext2_ioctl,
  142         .vop_link =             ext2_link,
  143         .vop_lookup =           vfs_cache_lookup,
  144         .vop_mkdir =            ext2_mkdir,
  145         .vop_mknod =            ext2_mknod,
  146         .vop_open =             ext2_open,
  147         .vop_pathconf =         ext2_pathconf,
  148         .vop_poll =             vop_stdpoll,
  149         .vop_print =            ext2_print,
  150         .vop_read =             ext2_read,
  151         .vop_readdir =          ext2_readdir,
  152         .vop_readlink =         ext2_readlink,
  153         .vop_reallocblks =      ext2_reallocblks,
  154         .vop_reclaim =          ext2_reclaim,
  155         .vop_remove =           ext2_remove,
  156         .vop_rename =           ext2_rename,
  157         .vop_rmdir =            ext2_rmdir,
  158         .vop_setattr =          ext2_setattr,
  159         .vop_strategy =         ext2_strategy,
  160         .vop_symlink =          ext2_symlink,
  161         .vop_write =            ext2_write,
  162         .vop_deleteextattr =    ext2_deleteextattr,
  163         .vop_getextattr =       ext2_getextattr,
  164         .vop_listextattr =      ext2_listextattr,
  165         .vop_setextattr =       ext2_setextattr,
  166 #ifdef UFS_ACL
  167         .vop_getacl =           ext2_getacl,
  168         .vop_setacl =           ext2_setacl,
  169         .vop_aclcheck =         ext2_aclcheck,
  170 #endif /* UFS_ACL */
  171         .vop_vptofh =           ext2_vptofh,
  172 };
  173 
  174 struct vop_vector ext2_fifoops = {
  175         .vop_default =          &fifo_specops,
  176         .vop_access =           ext2_access,
  177         .vop_close =            ext2fifo_close,
  178         .vop_fsync =            ext2_fsync,
  179         .vop_getattr =          ext2_getattr,
  180         .vop_inactive =         ext2_inactive,
  181         .vop_kqfilter =         ext2fifo_kqfilter,
  182         .vop_pathconf =         ext2_pathconf,
  183         .vop_print =            ext2_print,
  184         .vop_read =             VOP_PANIC,
  185         .vop_reclaim =          ext2_reclaim,
  186         .vop_setattr =          ext2_setattr,
  187         .vop_write =            VOP_PANIC,
  188         .vop_vptofh =           ext2_vptofh,
  189 };
  190 
  191 /*
  192  * A virgin directory (no blushing please).
  193  * Note that the type and namlen fields are reversed relative to ext2.
  194  * Also, we don't use `struct odirtemplate', since it would just cause
  195  * endianness problems.
  196  */
  197 static struct dirtemplate mastertemplate = {
  198         0, 12, 1, EXT2_FT_DIR, ".",
  199         0, DIRBLKSIZ - 12, 2, EXT2_FT_DIR, ".."
  200 };
  201 static struct dirtemplate omastertemplate = {
  202         0, 12, 1, EXT2_FT_UNKNOWN, ".",
  203         0, DIRBLKSIZ - 12, 2, EXT2_FT_UNKNOWN, ".."
  204 };
  205 
  206 static void
  207 ext2_itimes_locked(struct vnode *vp)
  208 {
  209         struct inode *ip;
  210         struct timespec ts;
  211 
  212         ASSERT_VI_LOCKED(vp, __func__);
  213 
  214         ip = VTOI(vp);
  215         if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) == 0)
  216                 return;
  217         if ((vp->v_type == VBLK || vp->v_type == VCHR))
  218                 ip->i_flag |= IN_LAZYMOD;
  219         else
  220                 ip->i_flag |= IN_MODIFIED;
  221         if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
  222                 vfs_timestamp(&ts);
  223                 if (ip->i_flag & IN_ACCESS) {
  224                         ip->i_atime = ts.tv_sec;
  225                         ip->i_atimensec = ts.tv_nsec;
  226                 }
  227                 if (ip->i_flag & IN_UPDATE) {
  228                         ip->i_mtime = ts.tv_sec;
  229                         ip->i_mtimensec = ts.tv_nsec;
  230                         ip->i_modrev++;
  231                 }
  232                 if (ip->i_flag & IN_CHANGE) {
  233                         ip->i_ctime = ts.tv_sec;
  234                         ip->i_ctimensec = ts.tv_nsec;
  235                 }
  236         }
  237         ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE);
  238 }
  239 
  240 void
  241 ext2_itimes(struct vnode *vp)
  242 {
  243 
  244         VI_LOCK(vp);
  245         ext2_itimes_locked(vp);
  246         VI_UNLOCK(vp);
  247 }
  248 
  249 /*
  250  * Create a regular file
  251  */
  252 static int
  253 ext2_create(struct vop_create_args *ap)
  254 {
  255         int error;
  256 
  257         error =
  258             ext2_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode),
  259             ap->a_dvp, ap->a_vpp, ap->a_cnp);
  260         if (error != 0)
  261                 return (error);
  262         if ((ap->a_cnp->cn_flags & MAKEENTRY) != 0)
  263                 cache_enter(ap->a_dvp, *ap->a_vpp, ap->a_cnp);
  264         return (0);
  265 }
  266 
  267 static int
  268 ext2_open(struct vop_open_args *ap)
  269 {
  270 
  271         if (ap->a_vp->v_type == VBLK || ap->a_vp->v_type == VCHR)
  272                 return (EOPNOTSUPP);
  273 
  274         /*
  275          * Files marked append-only must be opened for appending.
  276          */
  277         if ((VTOI(ap->a_vp)->i_flags & APPEND) &&
  278             (ap->a_mode & (FWRITE | O_APPEND)) == FWRITE)
  279                 return (EPERM);
  280 
  281         vnode_create_vobject(ap->a_vp, VTOI(ap->a_vp)->i_size, ap->a_td);
  282 
  283         return (0);
  284 }
  285 
  286 /*
  287  * Close called.
  288  *
  289  * Update the times on the inode.
  290  */
  291 static int
  292 ext2_close(struct vop_close_args *ap)
  293 {
  294         struct vnode *vp = ap->a_vp;
  295 
  296         VI_LOCK(vp);
  297         if (vp->v_usecount > 1)
  298                 ext2_itimes_locked(vp);
  299         VI_UNLOCK(vp);
  300         return (0);
  301 }
  302 
  303 static int
  304 ext2_access(struct vop_access_args *ap)
  305 {
  306         struct vnode *vp = ap->a_vp;
  307         struct inode *ip = VTOI(vp);
  308         accmode_t accmode = ap->a_accmode;
  309         int error;
  310 
  311         if (vp->v_type == VBLK || vp->v_type == VCHR)
  312                 return (EOPNOTSUPP);
  313 
  314         /*
  315          * Disallow write attempts on read-only file systems;
  316          * unless the file is a socket, fifo, or a block or
  317          * character device resident on the file system.
  318          */
  319         if (accmode & VWRITE) {
  320                 switch (vp->v_type) {
  321                 case VDIR:
  322                 case VLNK:
  323                 case VREG:
  324                         if (vp->v_mount->mnt_flag & MNT_RDONLY)
  325                                 return (EROFS);
  326                         break;
  327                 default:
  328                         break;
  329                 }
  330         }
  331 
  332         /* If immutable bit set, nobody gets to write it. */
  333         if ((accmode & VWRITE) && (ip->i_flags & (SF_IMMUTABLE | SF_SNAPSHOT)))
  334                 return (EPERM);
  335 
  336         error = vaccess(vp->v_type, ip->i_mode, ip->i_uid, ip->i_gid,
  337             ap->a_accmode, ap->a_cred, NULL);
  338         return (error);
  339 }
  340 
  341 static int
  342 ext2_getattr(struct vop_getattr_args *ap)
  343 {
  344         struct vnode *vp = ap->a_vp;
  345         struct inode *ip = VTOI(vp);
  346         struct vattr *vap = ap->a_vap;
  347 
  348         ext2_itimes(vp);
  349         /*
  350          * Copy from inode table
  351          */
  352         vap->va_fsid = dev2udev(ip->i_devvp->v_rdev);
  353         vap->va_fileid = ip->i_number;
  354         vap->va_mode = ip->i_mode & ~IFMT;
  355         vap->va_nlink = ip->i_nlink;
  356         vap->va_uid = ip->i_uid;
  357         vap->va_gid = ip->i_gid;
  358         vap->va_rdev = ip->i_rdev;
  359         vap->va_size = ip->i_size;
  360         vap->va_atime.tv_sec = ip->i_atime;
  361         vap->va_atime.tv_nsec = E2DI_HAS_XTIME(ip) ? ip->i_atimensec : 0;
  362         vap->va_mtime.tv_sec = ip->i_mtime;
  363         vap->va_mtime.tv_nsec = E2DI_HAS_XTIME(ip) ? ip->i_mtimensec : 0;
  364         vap->va_ctime.tv_sec = ip->i_ctime;
  365         vap->va_ctime.tv_nsec = E2DI_HAS_XTIME(ip) ? ip->i_ctimensec : 0;
  366         if E2DI_HAS_XTIME(ip) {
  367                 vap->va_birthtime.tv_sec = ip->i_birthtime;
  368                 vap->va_birthtime.tv_nsec = ip->i_birthnsec;
  369         }
  370         vap->va_flags = ip->i_flags;
  371         vap->va_gen = ip->i_gen;
  372         vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize;
  373         vap->va_bytes = dbtob((u_quad_t)ip->i_blocks);
  374         vap->va_type = IFTOVT(ip->i_mode);
  375         vap->va_filerev = ip->i_modrev;
  376         return (0);
  377 }
  378 
  379 /*
  380  * Set attribute vnode op. called from several syscalls
  381  */
  382 static int
  383 ext2_setattr(struct vop_setattr_args *ap)
  384 {
  385         struct vattr *vap = ap->a_vap;
  386         struct vnode *vp = ap->a_vp;
  387         struct inode *ip = VTOI(vp);
  388         struct ucred *cred = ap->a_cred;
  389         struct thread *td = curthread;
  390         int error;
  391 
  392         /*
  393          * Check for unsettable attributes.
  394          */
  395         if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
  396             (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
  397             (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) ||
  398             ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
  399                 return (EINVAL);
  400         }
  401         if (vap->va_flags != VNOVAL) {
  402                 /* Disallow flags not supported by ext2fs. */
  403                 if (vap->va_flags & ~(SF_APPEND | SF_IMMUTABLE | UF_NODUMP))
  404                         return (EOPNOTSUPP);
  405 
  406                 if (vp->v_mount->mnt_flag & MNT_RDONLY)
  407                         return (EROFS);
  408                 /*
  409                  * Callers may only modify the file flags on objects they
  410                  * have VADMIN rights for.
  411                  */
  412                 if ((error = VOP_ACCESS(vp, VADMIN, cred, td)))
  413                         return (error);
  414                 /*
  415                  * Unprivileged processes and privileged processes in
  416                  * jail() are not permitted to unset system flags, or
  417                  * modify flags if any system flags are set.
  418                  * Privileged non-jail processes may not modify system flags
  419                  * if securelevel > 0 and any existing system flags are set.
  420                  */
  421                 if (!priv_check_cred(cred, PRIV_VFS_SYSFLAGS, 0)) {
  422                         if (ip->i_flags & (SF_IMMUTABLE | SF_APPEND)) {
  423                                 error = securelevel_gt(cred, 0);
  424                                 if (error)
  425                                         return (error);
  426                         }
  427                 } else {
  428                         if (ip->i_flags & (SF_IMMUTABLE | SF_APPEND) ||
  429                             ((vap->va_flags ^ ip->i_flags) & SF_SETTABLE))
  430                                 return (EPERM);
  431                 }
  432                 ip->i_flags = vap->va_flags;
  433                 ip->i_flag |= IN_CHANGE;
  434                 if (ip->i_flags & (IMMUTABLE | APPEND))
  435                         return (0);
  436         }
  437         if (ip->i_flags & (IMMUTABLE | APPEND))
  438                 return (EPERM);
  439         /*
  440          * Go through the fields and update iff not VNOVAL.
  441          */
  442         if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
  443                 if (vp->v_mount->mnt_flag & MNT_RDONLY)
  444                         return (EROFS);
  445                 if ((error = ext2_chown(vp, vap->va_uid, vap->va_gid, cred,
  446                     td)) != 0)
  447                         return (error);
  448         }
  449         if (vap->va_size != VNOVAL) {
  450                 /*
  451                  * Disallow write attempts on read-only file systems;
  452                  * unless the file is a socket, fifo, or a block or
  453                  * character device resident on the file system.
  454                  */
  455                 switch (vp->v_type) {
  456                 case VDIR:
  457                         return (EISDIR);
  458                 case VLNK:
  459                 case VREG:
  460                         if (vp->v_mount->mnt_flag & MNT_RDONLY)
  461                                 return (EROFS);
  462                         break;
  463                 default:
  464                         break;
  465                 }
  466                 if ((error = ext2_truncate(vp, vap->va_size, 0, cred, td)) != 0)
  467                         return (error);
  468         }
  469         if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
  470                 if (vp->v_mount->mnt_flag & MNT_RDONLY)
  471                         return (EROFS);
  472                 /*
  473                  * From utimes(2):
  474                  * If times is NULL, ... The caller must be the owner of
  475                  * the file, have permission to write the file, or be the
  476                  * super-user.
  477                  * If times is non-NULL, ... The caller must be the owner of
  478                  * the file or be the super-user.
  479                  */
  480                 if ((error = VOP_ACCESS(vp, VADMIN, cred, td)) &&
  481                     ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
  482                     (error = VOP_ACCESS(vp, VWRITE, cred, td))))
  483                         return (error);
  484                 ip->i_flag |= IN_CHANGE | IN_MODIFIED;
  485                 if (vap->va_atime.tv_sec != VNOVAL) {
  486                         ip->i_flag &= ~IN_ACCESS;
  487                         ip->i_atime = vap->va_atime.tv_sec;
  488                         ip->i_atimensec = vap->va_atime.tv_nsec;
  489                 }
  490                 if (vap->va_mtime.tv_sec != VNOVAL) {
  491                         ip->i_flag &= ~IN_UPDATE;
  492                         ip->i_mtime = vap->va_mtime.tv_sec;
  493                         ip->i_mtimensec = vap->va_mtime.tv_nsec;
  494                 }
  495                 ip->i_birthtime = vap->va_birthtime.tv_sec;
  496                 ip->i_birthnsec = vap->va_birthtime.tv_nsec;
  497                 error = ext2_update(vp, 0);
  498                 if (error)
  499                         return (error);
  500         }
  501         error = 0;
  502         if (vap->va_mode != (mode_t)VNOVAL) {
  503                 if (vp->v_mount->mnt_flag & MNT_RDONLY)
  504                         return (EROFS);
  505                 error = ext2_chmod(vp, (int)vap->va_mode, cred, td);
  506         }
  507         return (error);
  508 }
  509 
  510 /*
  511  * Change the mode on a file.
  512  * Inode must be locked before calling.
  513  */
  514 static int
  515 ext2_chmod(struct vnode *vp, int mode, struct ucred *cred, struct thread *td)
  516 {
  517         struct inode *ip = VTOI(vp);
  518         int error;
  519 
  520         /*
  521          * To modify the permissions on a file, must possess VADMIN
  522          * for that file.
  523          */
  524         if ((error = VOP_ACCESS(vp, VADMIN, cred, td)))
  525                 return (error);
  526         /*
  527          * Privileged processes may set the sticky bit on non-directories,
  528          * as well as set the setgid bit on a file with a group that the
  529          * process is not a member of.
  530          */
  531         if (vp->v_type != VDIR && (mode & S_ISTXT)) {
  532                 error = priv_check_cred(cred, PRIV_VFS_STICKYFILE, 0);
  533                 if (error)
  534                         return (EFTYPE);
  535         }
  536         if (!groupmember(ip->i_gid, cred) && (mode & ISGID)) {
  537                 error = priv_check_cred(cred, PRIV_VFS_SETGID, 0);
  538                 if (error)
  539                         return (error);
  540         }
  541         ip->i_mode &= ~ALLPERMS;
  542         ip->i_mode |= (mode & ALLPERMS);
  543         ip->i_flag |= IN_CHANGE;
  544         return (0);
  545 }
  546 
  547 /*
  548  * Perform chown operation on inode ip;
  549  * inode must be locked prior to call.
  550  */
  551 static int
  552 ext2_chown(struct vnode *vp, uid_t uid, gid_t gid, struct ucred *cred,
  553     struct thread *td)
  554 {
  555         struct inode *ip = VTOI(vp);
  556         uid_t ouid;
  557         gid_t ogid;
  558         int error = 0;
  559 
  560         if (uid == (uid_t)VNOVAL)
  561                 uid = ip->i_uid;
  562         if (gid == (gid_t)VNOVAL)
  563                 gid = ip->i_gid;
  564         /*
  565          * To modify the ownership of a file, must possess VADMIN
  566          * for that file.
  567          */
  568         if ((error = VOP_ACCESS(vp, VADMIN, cred, td)))
  569                 return (error);
  570         /*
  571          * To change the owner of a file, or change the group of a file
  572          * to a group of which we are not a member, the caller must
  573          * have privilege.
  574          */
  575         if (uid != ip->i_uid || (gid != ip->i_gid &&
  576             !groupmember(gid, cred))) {
  577                 error = priv_check_cred(cred, PRIV_VFS_CHOWN, 0);
  578                 if (error)
  579                         return (error);
  580         }
  581         ogid = ip->i_gid;
  582         ouid = ip->i_uid;
  583         ip->i_gid = gid;
  584         ip->i_uid = uid;
  585         ip->i_flag |= IN_CHANGE;
  586         if ((ip->i_mode & (ISUID | ISGID)) && (ouid != uid || ogid != gid)) {
  587                 if (priv_check_cred(cred, PRIV_VFS_RETAINSUGID, 0) != 0)
  588                         ip->i_mode &= ~(ISUID | ISGID);
  589         }
  590         return (0);
  591 }
  592 
  593 /*
  594  * Synch an open file.
  595  */
  596 /* ARGSUSED */
  597 static int
  598 ext2_fsync(struct vop_fsync_args *ap)
  599 {
  600         /*
  601          * Flush all dirty buffers associated with a vnode.
  602          */
  603 
  604         vop_stdfsync(ap);
  605 
  606         return (ext2_update(ap->a_vp, ap->a_waitfor == MNT_WAIT));
  607 }
  608 
  609 /*
  610  * Mknod vnode call
  611  */
  612 /* ARGSUSED */
  613 static int
  614 ext2_mknod(struct vop_mknod_args *ap)
  615 {
  616         struct vattr *vap = ap->a_vap;
  617         struct vnode **vpp = ap->a_vpp;
  618         struct inode *ip;
  619         ino_t ino;
  620         int error;
  621 
  622         error = ext2_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
  623             ap->a_dvp, vpp, ap->a_cnp);
  624         if (error)
  625                 return (error);
  626         ip = VTOI(*vpp);
  627         ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
  628         if (vap->va_rdev != VNOVAL) {
  629                 /*
  630                  * Want to be able to use this to make badblock
  631                  * inodes, so don't truncate the dev number.
  632                  */
  633                 ip->i_rdev = vap->va_rdev;
  634         }
  635         /*
  636          * Remove inode, then reload it through VFS_VGET so it is
  637          * checked to see if it is an alias of an existing entry in
  638          * the inode cache.      XXX I don't believe this is necessary now.
  639          */
  640         (*vpp)->v_type = VNON;
  641         ino = ip->i_number;     /* Save this before vgone() invalidates ip. */
  642         vgone(*vpp);
  643         vput(*vpp);
  644         error = VFS_VGET(ap->a_dvp->v_mount, ino, LK_EXCLUSIVE, vpp);
  645         if (error) {
  646                 *vpp = NULL;
  647                 return (error);
  648         }
  649         return (0);
  650 }
  651 
  652 static int
  653 ext2_remove(struct vop_remove_args *ap)
  654 {
  655         struct inode *ip;
  656         struct vnode *vp = ap->a_vp;
  657         struct vnode *dvp = ap->a_dvp;
  658         int error;
  659 
  660         ip = VTOI(vp);
  661         if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
  662             (VTOI(dvp)->i_flags & APPEND)) {
  663                 error = EPERM;
  664                 goto out;
  665         }
  666         error = ext2_dirremove(dvp, ap->a_cnp);
  667         if (error == 0) {
  668                 ip->i_nlink--;
  669                 ip->i_flag |= IN_CHANGE;
  670         }
  671 out:
  672         return (error);
  673 }
  674 
  675 /*
  676  * link vnode call
  677  */
  678 static int
  679 ext2_link(struct vop_link_args *ap)
  680 {
  681         struct vnode *vp = ap->a_vp;
  682         struct vnode *tdvp = ap->a_tdvp;
  683         struct componentname *cnp = ap->a_cnp;
  684         struct inode *ip;
  685         int error;
  686 
  687 #ifdef INVARIANTS
  688         if ((cnp->cn_flags & HASBUF) == 0)
  689                 panic("ext2_link: no name");
  690 #endif
  691         ip = VTOI(vp);
  692         if ((nlink_t)ip->i_nlink >= EXT2_LINK_MAX) {
  693                 error = EMLINK;
  694                 goto out;
  695         }
  696         if (ip->i_flags & (IMMUTABLE | APPEND)) {
  697                 error = EPERM;
  698                 goto out;
  699         }
  700         ip->i_nlink++;
  701         ip->i_flag |= IN_CHANGE;
  702         error = ext2_update(vp, !DOINGASYNC(vp));
  703         if (!error)
  704                 error = ext2_direnter(ip, tdvp, cnp);
  705         if (error) {
  706                 ip->i_nlink--;
  707                 ip->i_flag |= IN_CHANGE;
  708         }
  709 out:
  710         return (error);
  711 }
  712 
  713 /*
  714  * Rename system call.
  715  *      rename("foo", "bar");
  716  * is essentially
  717  *      unlink("bar");
  718  *      link("foo", "bar");
  719  *      unlink("foo");
  720  * but ``atomically''.  Can't do full commit without saving state in the
  721  * inode on disk which isn't feasible at this time.  Best we can do is
  722  * always guarantee the target exists.
  723  *
  724  * Basic algorithm is:
  725  *
  726  * 1) Bump link count on source while we're linking it to the
  727  *    target.  This also ensure the inode won't be deleted out
  728  *    from underneath us while we work (it may be truncated by
  729  *    a concurrent `trunc' or `open' for creation).
  730  * 2) Link source to destination.  If destination already exists,
  731  *    delete it first.
  732  * 3) Unlink source reference to inode if still around. If a
  733  *    directory was moved and the parent of the destination
  734  *    is different from the source, patch the ".." entry in the
  735  *    directory.
  736  */
  737 static int
  738 ext2_rename(struct vop_rename_args *ap)
  739 {
  740         struct vnode *tvp = ap->a_tvp;
  741         struct vnode *tdvp = ap->a_tdvp;
  742         struct vnode *fvp = ap->a_fvp;
  743         struct vnode *fdvp = ap->a_fdvp;
  744         struct componentname *tcnp = ap->a_tcnp;
  745         struct componentname *fcnp = ap->a_fcnp;
  746         struct inode *ip, *xp, *dp;
  747         struct dirtemplate dirbuf;
  748         int doingdirectory = 0, oldparent = 0, newparent = 0;
  749         int error = 0;
  750         u_char namlen;
  751 
  752 #ifdef INVARIANTS
  753         if ((tcnp->cn_flags & HASBUF) == 0 ||
  754             (fcnp->cn_flags & HASBUF) == 0)
  755                 panic("ext2_rename: no name");
  756 #endif
  757         /*
  758          * Check for cross-device rename.
  759          */
  760         if ((fvp->v_mount != tdvp->v_mount) ||
  761             (tvp && (fvp->v_mount != tvp->v_mount))) {
  762                 error = EXDEV;
  763 abortit:
  764                 if (tdvp == tvp)
  765                         vrele(tdvp);
  766                 else
  767                         vput(tdvp);
  768                 if (tvp)
  769                         vput(tvp);
  770                 vrele(fdvp);
  771                 vrele(fvp);
  772                 return (error);
  773         }
  774 
  775         if (tvp && ((VTOI(tvp)->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
  776             (VTOI(tdvp)->i_flags & APPEND))) {
  777                 error = EPERM;
  778                 goto abortit;
  779         }
  780 
  781         /*
  782          * Renaming a file to itself has no effect.  The upper layers should
  783          * not call us in that case.  Temporarily just warn if they do.
  784          */
  785         if (fvp == tvp) {
  786                 printf("ext2_rename: fvp == tvp (can't happen)\n");
  787                 error = 0;
  788                 goto abortit;
  789         }
  790 
  791         if ((error = vn_lock(fvp, LK_EXCLUSIVE)) != 0)
  792                 goto abortit;
  793         dp = VTOI(fdvp);
  794         ip = VTOI(fvp);
  795         if (ip->i_nlink >= EXT2_LINK_MAX) {
  796                 VOP_UNLOCK(fvp, 0);
  797                 error = EMLINK;
  798                 goto abortit;
  799         }
  800         if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))
  801             || (dp->i_flags & APPEND)) {
  802                 VOP_UNLOCK(fvp, 0);
  803                 error = EPERM;
  804                 goto abortit;
  805         }
  806         if ((ip->i_mode & IFMT) == IFDIR) {
  807                 /*
  808                  * Avoid ".", "..", and aliases of "." for obvious reasons.
  809                  */
  810                 if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
  811                     dp == ip || (fcnp->cn_flags | tcnp->cn_flags) & ISDOTDOT ||
  812                     (ip->i_flag & IN_RENAME)) {
  813                         VOP_UNLOCK(fvp, 0);
  814                         error = EINVAL;
  815                         goto abortit;
  816                 }
  817                 ip->i_flag |= IN_RENAME;
  818                 oldparent = dp->i_number;
  819                 doingdirectory++;
  820         }
  821         vrele(fdvp);
  822 
  823         /*
  824          * When the target exists, both the directory
  825          * and target vnodes are returned locked.
  826          */
  827         dp = VTOI(tdvp);
  828         xp = NULL;
  829         if (tvp)
  830                 xp = VTOI(tvp);
  831 
  832         /*
  833          * 1) Bump link count while we're moving stuff
  834          *    around.  If we crash somewhere before
  835          *    completing our work, the link count
  836          *    may be wrong, but correctable.
  837          */
  838         ip->i_nlink++;
  839         ip->i_flag |= IN_CHANGE;
  840         if ((error = ext2_update(fvp, !DOINGASYNC(fvp))) != 0) {
  841                 VOP_UNLOCK(fvp, 0);
  842                 goto bad;
  843         }
  844 
  845         /*
  846          * If ".." must be changed (ie the directory gets a new
  847          * parent) then the source directory must not be in the
  848          * directory hierarchy above the target, as this would
  849          * orphan everything below the source directory. Also
  850          * the user must have write permission in the source so
  851          * as to be able to change "..". We must repeat the call
  852          * to namei, as the parent directory is unlocked by the
  853          * call to checkpath().
  854          */
  855         error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred, tcnp->cn_thread);
  856         VOP_UNLOCK(fvp, 0);
  857         if (oldparent != dp->i_number)
  858                 newparent = dp->i_number;
  859         if (doingdirectory && newparent) {
  860                 if (error)      /* write access check above */
  861                         goto bad;
  862                 if (xp != NULL)
  863                         vput(tvp);
  864                 error = ext2_checkpath(ip, dp, tcnp->cn_cred);
  865                 if (error)
  866                         goto out;
  867                 VREF(tdvp);
  868                 error = relookup(tdvp, &tvp, tcnp);
  869                 if (error)
  870                         goto out;
  871                 vrele(tdvp);
  872                 dp = VTOI(tdvp);
  873                 xp = NULL;
  874                 if (tvp)
  875                         xp = VTOI(tvp);
  876         }
  877         /*
  878          * 2) If target doesn't exist, link the target
  879          *    to the source and unlink the source.
  880          *    Otherwise, rewrite the target directory
  881          *    entry to reference the source inode and
  882          *    expunge the original entry's existence.
  883          */
  884         if (xp == NULL) {
  885                 if (dp->i_devvp != ip->i_devvp)
  886                         panic("ext2_rename: EXDEV");
  887                 /*
  888                  * Account for ".." in new directory.
  889                  * When source and destination have the same
  890                  * parent we don't fool with the link count.
  891                  */
  892                 if (doingdirectory && newparent) {
  893                         if ((nlink_t)dp->i_nlink >= EXT2_LINK_MAX) {
  894                                 error = EMLINK;
  895                                 goto bad;
  896                         }
  897                         dp->i_nlink++;
  898                         dp->i_flag |= IN_CHANGE;
  899                         error = ext2_update(tdvp, !DOINGASYNC(tdvp));
  900                         if (error)
  901                                 goto bad;
  902                 }
  903                 error = ext2_direnter(ip, tdvp, tcnp);
  904                 if (error) {
  905                         if (doingdirectory && newparent) {
  906                                 dp->i_nlink--;
  907                                 dp->i_flag |= IN_CHANGE;
  908                                 (void)ext2_update(tdvp, 1);
  909                         }
  910                         goto bad;
  911                 }
  912                 vput(tdvp);
  913         } else {
  914                 if (xp->i_devvp != dp->i_devvp || xp->i_devvp != ip->i_devvp)
  915                         panic("ext2_rename: EXDEV");
  916                 /*
  917                  * Short circuit rename(foo, foo).
  918                  */
  919                 if (xp->i_number == ip->i_number)
  920                         panic("ext2_rename: same file");
  921                 /*
  922                  * If the parent directory is "sticky", then the user must
  923                  * own the parent directory, or the destination of the rename,
  924                  * otherwise the destination may not be changed (except by
  925                  * root). This implements append-only directories.
  926                  */
  927                 if ((dp->i_mode & S_ISTXT) && tcnp->cn_cred->cr_uid != 0 &&
  928                     tcnp->cn_cred->cr_uid != dp->i_uid &&
  929                     xp->i_uid != tcnp->cn_cred->cr_uid) {
  930                         error = EPERM;
  931                         goto bad;
  932                 }
  933                 /*
  934                  * Target must be empty if a directory and have no links
  935                  * to it. Also, ensure source and target are compatible
  936                  * (both directories, or both not directories).
  937                  */
  938                 if ((xp->i_mode & IFMT) == IFDIR) {
  939                         if (!ext2_dirempty(xp, dp->i_number, tcnp->cn_cred) ||
  940                             xp->i_nlink > 2) {
  941                                 error = ENOTEMPTY;
  942                                 goto bad;
  943                         }
  944                         if (!doingdirectory) {
  945                                 error = ENOTDIR;
  946                                 goto bad;
  947                         }
  948                         cache_purge(tdvp);
  949                 } else if (doingdirectory) {
  950                         error = EISDIR;
  951                         goto bad;
  952                 }
  953                 error = ext2_dirrewrite(dp, ip, tcnp);
  954                 if (error)
  955                         goto bad;
  956                 /*
  957                  * If the target directory is in the same
  958                  * directory as the source directory,
  959                  * decrement the link count on the parent
  960                  * of the target directory.
  961                  */
  962                 if (doingdirectory && !newparent) {
  963                         dp->i_nlink--;
  964                         dp->i_flag |= IN_CHANGE;
  965                 }
  966                 vput(tdvp);
  967                 /*
  968                  * Adjust the link count of the target to
  969                  * reflect the dirrewrite above.  If this is
  970                  * a directory it is empty and there are
  971                  * no links to it, so we can squash the inode and
  972                  * any space associated with it.  We disallowed
  973                  * renaming over top of a directory with links to
  974                  * it above, as the remaining link would point to
  975                  * a directory without "." or ".." entries.
  976                  */
  977                 xp->i_nlink--;
  978                 if (doingdirectory) {
  979                         if (--xp->i_nlink != 0)
  980                                 panic("ext2_rename: linked directory");
  981                         error = ext2_truncate(tvp, (off_t)0, IO_SYNC,
  982                             tcnp->cn_cred, tcnp->cn_thread);
  983                 }
  984                 xp->i_flag |= IN_CHANGE;
  985                 vput(tvp);
  986                 xp = NULL;
  987         }
  988 
  989         /*
  990          * 3) Unlink the source.
  991          */
  992         fcnp->cn_flags &= ~MODMASK;
  993         fcnp->cn_flags |= LOCKPARENT | LOCKLEAF;
  994         VREF(fdvp);
  995         error = relookup(fdvp, &fvp, fcnp);
  996         if (error == 0)
  997                 vrele(fdvp);
  998         if (fvp != NULL) {
  999                 xp = VTOI(fvp);
 1000                 dp = VTOI(fdvp);
 1001         } else {
 1002                 /*
 1003                  * From name has disappeared.  IN_RENAME is not sufficient
 1004                  * to protect against directory races due to timing windows,
 1005                  * so we can't panic here.
 1006                  */
 1007                 vrele(ap->a_fvp);
 1008                 return (0);
 1009         }
 1010         /*
 1011          * Ensure that the directory entry still exists and has not
 1012          * changed while the new name has been entered. If the source is
 1013          * a file then the entry may have been unlinked or renamed. In
 1014          * either case there is no further work to be done. If the source
 1015          * is a directory then it cannot have been rmdir'ed; its link
 1016          * count of three would cause a rmdir to fail with ENOTEMPTY.
 1017          * The IN_RENAME flag ensures that it cannot be moved by another
 1018          * rename.
 1019          */
 1020         if (xp != ip) {
 1021                 /*
 1022                  * From name resolves to a different inode.  IN_RENAME is
 1023                  * not sufficient protection against timing window races
 1024                  * so we can't panic here.
 1025                  */
 1026         } else {
 1027                 /*
 1028                  * If the source is a directory with a
 1029                  * new parent, the link count of the old
 1030                  * parent directory must be decremented
 1031                  * and ".." set to point to the new parent.
 1032                  */
 1033                 if (doingdirectory && newparent) {
 1034                         dp->i_nlink--;
 1035                         dp->i_flag |= IN_CHANGE;
 1036                         error = vn_rdwr(UIO_READ, fvp, (caddr_t)&dirbuf,
 1037                             sizeof(struct dirtemplate), (off_t)0,
 1038                             UIO_SYSSPACE, IO_NODELOCKED | IO_NOMACCHECK,
 1039                             tcnp->cn_cred, NOCRED, NULL, NULL);
 1040                         if (error == 0) {
 1041                                 /* Like ufs little-endian: */
 1042                                 namlen = dirbuf.dotdot_type;
 1043                                 if (namlen != 2 ||
 1044                                     dirbuf.dotdot_name[0] != '.' ||
 1045                                     dirbuf.dotdot_name[1] != '.') {
 1046                                         ext2_dirbad(xp, (doff_t)12,
 1047                                             "rename: mangled dir");
 1048                                 } else {
 1049                                         dirbuf.dotdot_ino = newparent;
 1050                                         (void)vn_rdwr(UIO_WRITE, fvp,
 1051                                             (caddr_t)&dirbuf,
 1052                                             sizeof(struct dirtemplate),
 1053                                             (off_t)0, UIO_SYSSPACE,
 1054                                             IO_NODELOCKED | IO_SYNC |
 1055                                             IO_NOMACCHECK, tcnp->cn_cred,
 1056                                             NOCRED, NULL, NULL);
 1057                                         cache_purge(fdvp);
 1058                                 }
 1059                         }
 1060                 }
 1061                 error = ext2_dirremove(fdvp, fcnp);
 1062                 if (!error) {
 1063                         xp->i_nlink--;
 1064                         xp->i_flag |= IN_CHANGE;
 1065                 }
 1066                 xp->i_flag &= ~IN_RENAME;
 1067         }
 1068         if (dp)
 1069                 vput(fdvp);
 1070         if (xp)
 1071                 vput(fvp);
 1072         vrele(ap->a_fvp);
 1073         return (error);
 1074 
 1075 bad:
 1076         if (xp)
 1077                 vput(ITOV(xp));
 1078         vput(ITOV(dp));
 1079 out:
 1080         if (doingdirectory)
 1081                 ip->i_flag &= ~IN_RENAME;
 1082         if (vn_lock(fvp, LK_EXCLUSIVE) == 0) {
 1083                 ip->i_nlink--;
 1084                 ip->i_flag |= IN_CHANGE;
 1085                 ip->i_flag &= ~IN_RENAME;
 1086                 vput(fvp);
 1087         } else
 1088                 vrele(fvp);
 1089         return (error);
 1090 }
 1091 
 1092 #ifdef UFS_ACL
 1093 static int
 1094 ext2_do_posix1e_acl_inheritance_dir(struct vnode *dvp, struct vnode *tvp,
 1095     mode_t dmode, struct ucred *cred, struct thread *td)
 1096 {
 1097         int error;
 1098         struct inode *ip = VTOI(tvp);
 1099         struct acl *dacl, *acl;
 1100 
 1101         acl = acl_alloc(M_WAITOK);
 1102         dacl = acl_alloc(M_WAITOK);
 1103 
 1104         /*
 1105          * Retrieve default ACL from parent, if any.
 1106          */
 1107         error = VOP_GETACL(dvp, ACL_TYPE_DEFAULT, acl, cred, td);
 1108         switch (error) {
 1109         case 0:
 1110                 /*
 1111                  * Retrieved a default ACL, so merge mode and ACL if
 1112                  * necessary.  If the ACL is empty, fall through to
 1113                  * the "not defined or available" case.
 1114                  */
 1115                 if (acl->acl_cnt != 0) {
 1116                         dmode = acl_posix1e_newfilemode(dmode, acl);
 1117                         ip->i_mode = dmode;
 1118                         *dacl = *acl;
 1119                         ext2_sync_acl_from_inode(ip, acl);
 1120                         break;
 1121                 }
 1122                 /* FALLTHROUGH */
 1123 
 1124         case EOPNOTSUPP:
 1125                 /*
 1126                  * Just use the mode as-is.
 1127                  */
 1128                 ip->i_mode = dmode;
 1129                 error = 0;
 1130                 goto out;
 1131 
 1132         default:
 1133                 goto out;
 1134         }
 1135 
 1136         error = VOP_SETACL(tvp, ACL_TYPE_ACCESS, acl, cred, td);
 1137         if (error == 0)
 1138                 error = VOP_SETACL(tvp, ACL_TYPE_DEFAULT, dacl, cred, td);
 1139         switch (error) {
 1140         case 0:
 1141                 break;
 1142 
 1143         case EOPNOTSUPP:
 1144                 /*
 1145                  * XXX: This should not happen, as EOPNOTSUPP above
 1146                  * was supposed to free acl.
 1147                  */
 1148 #ifdef DEBUG
 1149                 printf("ext2_mkdir: VOP_GETACL() but no VOP_SETACL()\n");
 1150 #endif  /* DEBUG */
 1151                 break;
 1152 
 1153         default:
 1154                 goto out;
 1155         }
 1156 
 1157 out:
 1158         acl_free(acl);
 1159         acl_free(dacl);
 1160 
 1161         return (error);
 1162 }
 1163 
 1164 static int
 1165 ext2_do_posix1e_acl_inheritance_file(struct vnode *dvp, struct vnode *tvp,
 1166     mode_t mode, struct ucred *cred, struct thread *td)
 1167 {
 1168         int error;
 1169         struct inode *ip = VTOI(tvp);
 1170         struct acl *acl;
 1171 
 1172         acl = acl_alloc(M_WAITOK);
 1173 
 1174         /*
 1175          * Retrieve default ACL for parent, if any.
 1176          */
 1177         error = VOP_GETACL(dvp, ACL_TYPE_DEFAULT, acl, cred, td);
 1178         switch (error) {
 1179         case 0:
 1180                 /*
 1181                  * Retrieved a default ACL, so merge mode and ACL if
 1182                  * necessary.
 1183                  */
 1184                 if (acl->acl_cnt != 0) {
 1185                         /*
 1186                          * Two possible ways for default ACL to not
 1187                          * be present.  First, the EA can be
 1188                          * undefined, or second, the default ACL can
 1189                          * be blank.  If it's blank, fall through to
 1190                          * the it's not defined case.
 1191                          */
 1192                         mode = acl_posix1e_newfilemode(mode, acl);
 1193                         ip->i_mode = mode;
 1194                         ext2_sync_acl_from_inode(ip, acl);
 1195                         break;
 1196                 }
 1197                 /* FALLTHROUGH */
 1198 
 1199         case EOPNOTSUPP:
 1200                 /*
 1201                  * Just use the mode as-is.
 1202                  */
 1203                 ip->i_mode = mode;
 1204                 error = 0;
 1205                 goto out;
 1206 
 1207         default:
 1208                 goto out;
 1209         }
 1210 
 1211         error = VOP_SETACL(tvp, ACL_TYPE_ACCESS, acl, cred, td);
 1212         switch (error) {
 1213         case 0:
 1214                 break;
 1215 
 1216         case EOPNOTSUPP:
 1217                 /*
 1218                  * XXX: This should not happen, as EOPNOTSUPP above was
 1219                  * supposed to free acl.
 1220                  */
 1221                 printf("ufs_do_posix1e_acl_inheritance_file: VOP_GETACL() "
 1222                     "but no VOP_SETACL()\n");
 1223                 /* panic("ufs_do_posix1e_acl_inheritance_file: VOP_GETACL() "
 1224                     "but no VOP_SETACL()"); */
 1225                 break;
 1226 
 1227         default:
 1228                 goto out;
 1229         }
 1230 
 1231 out:
 1232         acl_free(acl);
 1233 
 1234         return (error);
 1235 }
 1236 
 1237 #endif /* UFS_ACL */
 1238 
 1239 /*
 1240  * Mkdir system call
 1241  */
 1242 static int
 1243 ext2_mkdir(struct vop_mkdir_args *ap)
 1244 {
 1245         struct vnode *dvp = ap->a_dvp;
 1246         struct vattr *vap = ap->a_vap;
 1247         struct componentname *cnp = ap->a_cnp;
 1248         struct inode *ip, *dp;
 1249         struct vnode *tvp;
 1250         struct dirtemplate dirtemplate, *dtp;
 1251         int error, dmode;
 1252 
 1253 #ifdef INVARIANTS
 1254         if ((cnp->cn_flags & HASBUF) == 0)
 1255                 panic("ext2_mkdir: no name");
 1256 #endif
 1257         dp = VTOI(dvp);
 1258         if ((nlink_t)dp->i_nlink >= EXT2_LINK_MAX) {
 1259                 error = EMLINK;
 1260                 goto out;
 1261         }
 1262         dmode = vap->va_mode & 0777;
 1263         dmode |= IFDIR;
 1264         /*
 1265          * Must simulate part of ext2_makeinode here to acquire the inode,
 1266          * but not have it entered in the parent directory. The entry is
 1267          * made later after writing "." and ".." entries.
 1268          */
 1269         error = ext2_valloc(dvp, dmode, cnp->cn_cred, &tvp);
 1270         if (error)
 1271                 goto out;
 1272         ip = VTOI(tvp);
 1273         ip->i_gid = dp->i_gid;
 1274 #ifdef SUIDDIR
 1275         {
 1276                 /*
 1277                  * if we are hacking owners here, (only do this where told to)
 1278                  * and we are not giving it TOO root, (would subvert quotas)
 1279                  * then go ahead and give it to the other user.
 1280                  * The new directory also inherits the SUID bit.
 1281                  * If user's UID and dir UID are the same,
 1282                  * 'give it away' so that the SUID is still forced on.
 1283                  */
 1284                 if ((dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
 1285                     (dp->i_mode & ISUID) && dp->i_uid) {
 1286                         dmode |= ISUID;
 1287                         ip->i_uid = dp->i_uid;
 1288                 } else {
 1289                         ip->i_uid = cnp->cn_cred->cr_uid;
 1290                 }
 1291         }
 1292 #else
 1293         ip->i_uid = cnp->cn_cred->cr_uid;
 1294 #endif
 1295         ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
 1296         ip->i_mode = dmode;
 1297         tvp->v_type = VDIR;     /* Rest init'd in getnewvnode(). */
 1298         ip->i_nlink = 2;
 1299         if (cnp->cn_flags & ISWHITEOUT)
 1300                 ip->i_flags |= UF_OPAQUE;
 1301         error = ext2_update(tvp, 1);
 1302 
 1303         /*
 1304          * Bump link count in parent directory
 1305          * to reflect work done below.  Should
 1306          * be done before reference is created
 1307          * so reparation is possible if we crash.
 1308          */
 1309         dp->i_nlink++;
 1310         dp->i_flag |= IN_CHANGE;
 1311         error = ext2_update(dvp, !DOINGASYNC(dvp));
 1312         if (error)
 1313                 goto bad;
 1314 
 1315         /* Initialize directory with "." and ".." from static template. */
 1316         if (EXT2_HAS_INCOMPAT_FEATURE(ip->i_e2fs,
 1317             EXT2F_INCOMPAT_FTYPE))
 1318                 dtp = &mastertemplate;
 1319         else
 1320                 dtp = &omastertemplate;
 1321         dirtemplate = *dtp;
 1322         dirtemplate.dot_ino = ip->i_number;
 1323         dirtemplate.dotdot_ino = dp->i_number;
 1324         /*
 1325          * note that in ext2 DIRBLKSIZ == blocksize, not DEV_BSIZE so let's
 1326          * just redefine it - for this function only
 1327          */
 1328 #undef  DIRBLKSIZ
 1329 #define DIRBLKSIZ  VTOI(dvp)->i_e2fs->e2fs_bsize
 1330         dirtemplate.dotdot_reclen = DIRBLKSIZ - 12;
 1331         error = vn_rdwr(UIO_WRITE, tvp, (caddr_t)&dirtemplate,
 1332             sizeof(dirtemplate), (off_t)0, UIO_SYSSPACE,
 1333             IO_NODELOCKED | IO_SYNC | IO_NOMACCHECK, cnp->cn_cred, NOCRED,
 1334             NULL, NULL);
 1335         if (error) {
 1336                 dp->i_nlink--;
 1337                 dp->i_flag |= IN_CHANGE;
 1338                 goto bad;
 1339         }
 1340         if (DIRBLKSIZ > VFSTOEXT2(dvp->v_mount)->um_mountp->mnt_stat.f_bsize)
 1341                 /* XXX should grow with balloc() */
 1342                 panic("ext2_mkdir: blksize");
 1343         else {
 1344                 ip->i_size = DIRBLKSIZ;
 1345                 ip->i_flag |= IN_CHANGE;
 1346         }
 1347 
 1348 #ifdef UFS_ACL
 1349         if (dvp->v_mount->mnt_flag & MNT_ACLS) {
 1350                 error = ext2_do_posix1e_acl_inheritance_dir(dvp, tvp, dmode,
 1351                     cnp->cn_cred, cnp->cn_thread);
 1352                 if (error)
 1353                         goto bad;
 1354         }
 1355 
 1356 #endif /* UFS_ACL */
 1357 
 1358         /* Directory set up, now install its entry in the parent directory. */
 1359         error = ext2_direnter(ip, dvp, cnp);
 1360         if (error) {
 1361                 dp->i_nlink--;
 1362                 dp->i_flag |= IN_CHANGE;
 1363         }
 1364 bad:
 1365         /*
 1366          * No need to do an explicit VOP_TRUNCATE here, vrele will do this
 1367          * for us because we set the link count to 0.
 1368          */
 1369         if (error) {
 1370                 ip->i_nlink = 0;
 1371                 ip->i_flag |= IN_CHANGE;
 1372                 vput(tvp);
 1373         } else
 1374                 *ap->a_vpp = tvp;
 1375 out:
 1376         return (error);
 1377 #undef  DIRBLKSIZ
 1378 #define DIRBLKSIZ  DEV_BSIZE
 1379 }
 1380 
 1381 /*
 1382  * Rmdir system call.
 1383  */
 1384 static int
 1385 ext2_rmdir(struct vop_rmdir_args *ap)
 1386 {
 1387         struct vnode *vp = ap->a_vp;
 1388         struct vnode *dvp = ap->a_dvp;
 1389         struct componentname *cnp = ap->a_cnp;
 1390         struct inode *ip, *dp;
 1391         int error;
 1392 
 1393         ip = VTOI(vp);
 1394         dp = VTOI(dvp);
 1395 
 1396         /*
 1397          * Verify the directory is empty (and valid).
 1398          * (Rmdir ".." won't be valid since
 1399          *  ".." will contain a reference to
 1400          *  the current directory and thus be
 1401          *  non-empty.)
 1402          */
 1403         if (ip->i_nlink != 2 || !ext2_dirempty(ip, dp->i_number, cnp->cn_cred)) {
 1404                 error = ENOTEMPTY;
 1405                 goto out;
 1406         }
 1407         if ((dp->i_flags & APPEND)
 1408             || (ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))) {
 1409                 error = EPERM;
 1410                 goto out;
 1411         }
 1412         /*
 1413          * Delete reference to directory before purging
 1414          * inode.  If we crash in between, the directory
 1415          * will be reattached to lost+found,
 1416          */
 1417         error = ext2_dirremove(dvp, cnp);
 1418         if (error)
 1419                 goto out;
 1420         dp->i_nlink--;
 1421         dp->i_flag |= IN_CHANGE;
 1422         cache_purge(dvp);
 1423         VOP_UNLOCK(dvp, 0);
 1424         /*
 1425          * Truncate inode.  The only stuff left
 1426          * in the directory is "." and "..".  The
 1427          * "." reference is inconsequential since
 1428          * we're quashing it.  The ".." reference
 1429          * has already been adjusted above.  We've
 1430          * removed the "." reference and the reference
 1431          * in the parent directory, but there may be
 1432          * other hard links so decrement by 2 and
 1433          * worry about them later.
 1434          */
 1435         ip->i_nlink -= 2;
 1436         error = ext2_truncate(vp, (off_t)0, IO_SYNC, cnp->cn_cred,
 1437             cnp->cn_thread);
 1438         cache_purge(ITOV(ip));
 1439         if (vn_lock(dvp, LK_EXCLUSIVE | LK_NOWAIT) != 0) {
 1440                 VOP_UNLOCK(vp, 0);
 1441                 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
 1442                 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
 1443         }
 1444 out:
 1445         return (error);
 1446 }
 1447 
 1448 /*
 1449  * symlink -- make a symbolic link
 1450  */
 1451 static int
 1452 ext2_symlink(struct vop_symlink_args *ap)
 1453 {
 1454         struct vnode *vp, **vpp = ap->a_vpp;
 1455         struct inode *ip;
 1456         int len, error;
 1457 
 1458         error = ext2_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp,
 1459             vpp, ap->a_cnp);
 1460         if (error)
 1461                 return (error);
 1462         vp = *vpp;
 1463         len = strlen(ap->a_target);
 1464         if (len < vp->v_mount->mnt_maxsymlinklen) {
 1465                 ip = VTOI(vp);
 1466                 bcopy(ap->a_target, (char *)ip->i_shortlink, len);
 1467                 ip->i_size = len;
 1468                 ip->i_flag |= IN_CHANGE | IN_UPDATE;
 1469         } else
 1470                 error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0,
 1471                     UIO_SYSSPACE, IO_NODELOCKED | IO_NOMACCHECK,
 1472                     ap->a_cnp->cn_cred, NOCRED, NULL, NULL);
 1473         if (error)
 1474                 vput(vp);
 1475         return (error);
 1476 }
 1477 
 1478 /*
 1479  * Return target name of a symbolic link
 1480  */
 1481 static int
 1482 ext2_readlink(struct vop_readlink_args *ap)
 1483 {
 1484         struct vnode *vp = ap->a_vp;
 1485         struct inode *ip = VTOI(vp);
 1486         int isize;
 1487 
 1488         isize = ip->i_size;
 1489         if (isize < vp->v_mount->mnt_maxsymlinklen) {
 1490                 uiomove((char *)ip->i_shortlink, isize, ap->a_uio);
 1491                 return (0);
 1492         }
 1493         return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
 1494 }
 1495 
 1496 /*
 1497  * Calculate the logical to physical mapping if not done already,
 1498  * then call the device strategy routine.
 1499  *
 1500  * In order to be able to swap to a file, the ext2_bmaparray() operation may not
 1501  * deadlock on memory.  See ext2_bmap() for details.
 1502  */
 1503 static int
 1504 ext2_strategy(struct vop_strategy_args *ap)
 1505 {
 1506         struct buf *bp = ap->a_bp;
 1507         struct vnode *vp = ap->a_vp;
 1508         struct bufobj *bo;
 1509         daddr_t blkno;
 1510         int error;
 1511 
 1512         if (vp->v_type == VBLK || vp->v_type == VCHR)
 1513                 panic("ext2_strategy: spec");
 1514         if (bp->b_blkno == bp->b_lblkno) {
 1515                 error = ext2_bmaparray(vp, bp->b_lblkno, &blkno, NULL, NULL);
 1516                 bp->b_blkno = blkno;
 1517                 if (error) {
 1518                         bp->b_error = error;
 1519                         bp->b_ioflags |= BIO_ERROR;
 1520                         bufdone(bp);
 1521                         return (0);
 1522                 }
 1523                 if ((long)bp->b_blkno == -1)
 1524                         vfs_bio_clrbuf(bp);
 1525         }
 1526         if ((long)bp->b_blkno == -1) {
 1527                 bufdone(bp);
 1528                 return (0);
 1529         }
 1530         bp->b_iooffset = dbtob(bp->b_blkno);
 1531         bo = VFSTOEXT2(vp->v_mount)->um_bo;
 1532         BO_STRATEGY(bo, bp);
 1533         return (0);
 1534 }
 1535 
 1536 /*
 1537  * Print out the contents of an inode.
 1538  */
 1539 static int
 1540 ext2_print(struct vop_print_args *ap)
 1541 {
 1542         struct vnode *vp = ap->a_vp;
 1543         struct inode *ip = VTOI(vp);
 1544 
 1545         vn_printf(ip->i_devvp, "\tino %ju", (uintmax_t)ip->i_number);
 1546         if (vp->v_type == VFIFO)
 1547                 fifo_printinfo(vp);
 1548         printf("\n");
 1549         return (0);
 1550 }
 1551 
 1552 /*
 1553  * Close wrapper for fifos.
 1554  *
 1555  * Update the times on the inode then do device close.
 1556  */
 1557 static int
 1558 ext2fifo_close(struct vop_close_args *ap)
 1559 {
 1560         struct vnode *vp = ap->a_vp;
 1561 
 1562         VI_LOCK(vp);
 1563         if (vp->v_usecount > 1)
 1564                 ext2_itimes_locked(vp);
 1565         VI_UNLOCK(vp);
 1566         return (fifo_specops.vop_close(ap));
 1567 }
 1568 
 1569 /*
 1570  * Kqfilter wrapper for fifos.
 1571  *
 1572  * Fall through to ext2 kqfilter routines if needed
 1573  */
 1574 static int
 1575 ext2fifo_kqfilter(struct vop_kqfilter_args *ap)
 1576 {
 1577         int error;
 1578 
 1579         error = fifo_specops.vop_kqfilter(ap);
 1580         if (error)
 1581                 error = vfs_kqfilter(ap);
 1582         return (error);
 1583 }
 1584 
 1585 /*
 1586  * Return POSIX pathconf information applicable to ext2 filesystems.
 1587  */
 1588 static int
 1589 ext2_pathconf(struct vop_pathconf_args *ap)
 1590 {
 1591         int error = 0;
 1592 
 1593         switch (ap->a_name) {
 1594         case _PC_LINK_MAX:
 1595                 *ap->a_retval = EXT2_LINK_MAX;
 1596                 break;
 1597         case _PC_NAME_MAX:
 1598                 *ap->a_retval = NAME_MAX;
 1599                 break;
 1600         case _PC_PIPE_BUF:
 1601                 if (ap->a_vp->v_type == VDIR || ap->a_vp->v_type == VFIFO)
 1602                         *ap->a_retval = PIPE_BUF;
 1603                 else
 1604                         error = EINVAL;
 1605                 break;
 1606         case _PC_CHOWN_RESTRICTED:
 1607                 *ap->a_retval = 1;
 1608                 break;
 1609         case _PC_NO_TRUNC:
 1610                 *ap->a_retval = 1;
 1611                 break;
 1612 
 1613 #ifdef UFS_ACL
 1614         case _PC_ACL_EXTENDED:
 1615                 if (ap->a_vp->v_mount->mnt_flag & MNT_ACLS)
 1616                         *ap->a_retval = 1;
 1617                 else
 1618                         *ap->a_retval = 0;
 1619                 break;
 1620         case _PC_ACL_PATH_MAX:
 1621                 if (ap->a_vp->v_mount->mnt_flag & MNT_ACLS)
 1622                         *ap->a_retval = ACL_MAX_ENTRIES;
 1623                 else
 1624                         *ap->a_retval = 3;
 1625                 break;
 1626 #endif /* UFS_ACL */
 1627 
 1628         case _PC_MIN_HOLE_SIZE:
 1629                 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
 1630                 break;
 1631         case _PC_PRIO_IO:
 1632                 *ap->a_retval = 0;
 1633                 break;
 1634         case _PC_SYNC_IO:
 1635                 *ap->a_retval = 0;
 1636                 break;
 1637         case _PC_ALLOC_SIZE_MIN:
 1638                 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_bsize;
 1639                 break;
 1640         case _PC_FILESIZEBITS:
 1641                 *ap->a_retval = 64;
 1642                 break;
 1643         case _PC_REC_INCR_XFER_SIZE:
 1644                 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
 1645                 break;
 1646         case _PC_REC_MAX_XFER_SIZE:
 1647                 *ap->a_retval = -1;     /* means ``unlimited'' */
 1648                 break;
 1649         case _PC_REC_MIN_XFER_SIZE:
 1650                 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize;
 1651                 break;
 1652         case _PC_REC_XFER_ALIGN:
 1653                 *ap->a_retval = PAGE_SIZE;
 1654                 break;
 1655         case _PC_SYMLINK_MAX:
 1656                 *ap->a_retval = MAXPATHLEN;
 1657                 break;
 1658 
 1659         default:
 1660                 error = vop_stdpathconf(ap);
 1661                 break;
 1662         }
 1663         return (error);
 1664 }
 1665 
 1666 /*
 1667  * Vnode operation to remove a named attribute.
 1668  */
 1669 static int
 1670 ext2_deleteextattr(struct vop_deleteextattr_args *ap)
 1671 {
 1672         struct inode *ip;
 1673         struct m_ext2fs *fs;
 1674         int error;
 1675 
 1676         ip = VTOI(ap->a_vp);
 1677         fs = ip->i_e2fs;
 1678 
 1679         if (!EXT2_HAS_COMPAT_FEATURE(ip->i_e2fs, EXT2F_COMPAT_EXT_ATTR))
 1680                 return (EOPNOTSUPP);
 1681 
 1682         if (ap->a_vp->v_type == VCHR || ap->a_vp->v_type == VBLK)
 1683                 return (EOPNOTSUPP);
 1684 
 1685         error = extattr_check_cred(ap->a_vp, ap->a_attrnamespace,
 1686             ap->a_cred, ap->a_td, VWRITE);
 1687         if (error)
 1688                 return (error);
 1689 
 1690         error = ENOATTR;
 1691 
 1692         if (EXT2_INODE_SIZE(fs) != E2FS_REV0_INODE_SIZE) {
 1693                 error = ext2_extattr_inode_delete(ip, ap->a_attrnamespace, ap->a_name);
 1694                 if (error != ENOATTR)
 1695                         return (error);
 1696         }
 1697 
 1698         if (ip->i_facl)
 1699                 error = ext2_extattr_block_delete(ip, ap->a_attrnamespace, ap->a_name);
 1700 
 1701         return (error);
 1702 }
 1703 
 1704 /*
 1705  * Vnode operation to retrieve a named extended attribute.
 1706  */
 1707 static int
 1708 ext2_getextattr(struct vop_getextattr_args *ap)
 1709 {
 1710         struct inode *ip;
 1711         struct m_ext2fs *fs;
 1712         int error;
 1713 
 1714         ip = VTOI(ap->a_vp);
 1715         fs = ip->i_e2fs;
 1716 
 1717         if (!EXT2_HAS_COMPAT_FEATURE(ip->i_e2fs, EXT2F_COMPAT_EXT_ATTR))
 1718                 return (EOPNOTSUPP);
 1719 
 1720         if (ap->a_vp->v_type == VCHR || ap->a_vp->v_type == VBLK)
 1721                 return (EOPNOTSUPP);
 1722 
 1723         error = extattr_check_cred(ap->a_vp, ap->a_attrnamespace,
 1724             ap->a_cred, ap->a_td, VREAD);
 1725         if (error)
 1726                 return (error);
 1727 
 1728         if (ap->a_size != NULL)
 1729                 *ap->a_size = 0;
 1730 
 1731         error = ENOATTR;
 1732 
 1733         if (EXT2_INODE_SIZE(fs) != E2FS_REV0_INODE_SIZE) {
 1734                 error = ext2_extattr_inode_get(ip, ap->a_attrnamespace,
 1735                     ap->a_name, ap->a_uio, ap->a_size);
 1736                 if (error != ENOATTR)
 1737                         return (error);
 1738         }
 1739 
 1740         if (ip->i_facl)
 1741                 error = ext2_extattr_block_get(ip, ap->a_attrnamespace,
 1742                     ap->a_name, ap->a_uio, ap->a_size);
 1743 
 1744         return (error);
 1745 }
 1746 
 1747 /*
 1748  * Vnode operation to retrieve extended attributes on a vnode.
 1749  */
 1750 static int
 1751 ext2_listextattr(struct vop_listextattr_args *ap)
 1752 {
 1753         struct inode *ip;
 1754         struct m_ext2fs *fs;
 1755         int error;
 1756 
 1757         ip = VTOI(ap->a_vp);
 1758         fs = ip->i_e2fs;
 1759 
 1760         if (!EXT2_HAS_COMPAT_FEATURE(ip->i_e2fs, EXT2F_COMPAT_EXT_ATTR))
 1761                 return (EOPNOTSUPP);
 1762 
 1763         if (ap->a_vp->v_type == VCHR || ap->a_vp->v_type == VBLK)
 1764                 return (EOPNOTSUPP);
 1765 
 1766         error = extattr_check_cred(ap->a_vp, ap->a_attrnamespace,
 1767             ap->a_cred, ap->a_td, VREAD);
 1768         if (error)
 1769                 return (error);
 1770 
 1771         if (ap->a_size != NULL)
 1772                 *ap->a_size = 0;
 1773 
 1774         if (EXT2_INODE_SIZE(fs) != E2FS_REV0_INODE_SIZE) {
 1775                 error = ext2_extattr_inode_list(ip, ap->a_attrnamespace,
 1776                     ap->a_uio, ap->a_size);
 1777                 if (error)
 1778                         return (error);
 1779         }
 1780 
 1781         if (ip->i_facl)
 1782                 error = ext2_extattr_block_list(ip, ap->a_attrnamespace,
 1783                     ap->a_uio, ap->a_size);
 1784 
 1785         return (error);
 1786 }
 1787 
 1788 /*
 1789  * Vnode operation to set a named attribute.
 1790  */
 1791 static int
 1792 ext2_setextattr(struct vop_setextattr_args *ap)
 1793 {
 1794         struct inode *ip;
 1795         struct m_ext2fs *fs;
 1796         int error;
 1797 
 1798         ip = VTOI(ap->a_vp);
 1799         fs = ip->i_e2fs;
 1800 
 1801         if (!EXT2_HAS_COMPAT_FEATURE(ip->i_e2fs, EXT2F_COMPAT_EXT_ATTR))
 1802                 return (EOPNOTSUPP);
 1803 
 1804         if (ap->a_vp->v_type == VCHR || ap->a_vp->v_type == VBLK)
 1805                 return (EOPNOTSUPP);
 1806 
 1807         error = extattr_check_cred(ap->a_vp, ap->a_attrnamespace,
 1808             ap->a_cred, ap->a_td, VWRITE);
 1809         if (error)
 1810                 return (error);
 1811 
 1812         error = ext2_extattr_valid_attrname(ap->a_attrnamespace, ap->a_name);
 1813         if (error)
 1814                 return (error);
 1815 
 1816         if (EXT2_INODE_SIZE(fs) != E2FS_REV0_INODE_SIZE) {
 1817                 error = ext2_extattr_inode_set(ip, ap->a_attrnamespace,
 1818                     ap->a_name, ap->a_uio);
 1819                 if (error != ENOSPC)
 1820                         return (error);
 1821         }
 1822 
 1823         error = ext2_extattr_block_set(ip, ap->a_attrnamespace,
 1824             ap->a_name, ap->a_uio);
 1825 
 1826         return (error);
 1827 }
 1828 
 1829 /*
 1830  * Vnode pointer to File handle
 1831  */
 1832 /* ARGSUSED */
 1833 static int
 1834 ext2_vptofh(struct vop_vptofh_args *ap)
 1835 {
 1836         struct inode *ip;
 1837         struct ufid *ufhp;
 1838 
 1839         ip = VTOI(ap->a_vp);
 1840         ufhp = (struct ufid *)ap->a_fhp;
 1841         ufhp->ufid_len = sizeof(struct ufid);
 1842         ufhp->ufid_ino = ip->i_number;
 1843         ufhp->ufid_gen = ip->i_gen;
 1844         return (0);
 1845 }
 1846 
 1847 /*
 1848  * Initialize the vnode associated with a new inode, handle aliased
 1849  * vnodes.
 1850  */
 1851 int
 1852 ext2_vinit(struct mount *mntp, struct vop_vector *fifoops, struct vnode **vpp)
 1853 {
 1854         struct inode *ip;
 1855         struct vnode *vp;
 1856 
 1857         vp = *vpp;
 1858         ip = VTOI(vp);
 1859         vp->v_type = IFTOVT(ip->i_mode);
 1860         /*
 1861          * Only unallocated inodes should be of type VNON.
 1862          */
 1863         if (ip->i_mode != 0 && vp->v_type == VNON)
 1864                 return (EINVAL);
 1865         if (vp->v_type == VFIFO)
 1866                 vp->v_op = fifoops;
 1867 
 1868         if (ip->i_number == EXT2_ROOTINO)
 1869                 vp->v_vflag |= VV_ROOT;
 1870         ip->i_modrev = init_va_filerev();
 1871         *vpp = vp;
 1872         return (0);
 1873 }
 1874 
 1875 /*
 1876  * Allocate a new inode.
 1877  */
 1878 static int
 1879 ext2_makeinode(int mode, struct vnode *dvp, struct vnode **vpp,
 1880     struct componentname *cnp)
 1881 {
 1882         struct inode *ip, *pdir;
 1883         struct vnode *tvp;
 1884         int error;
 1885 
 1886         pdir = VTOI(dvp);
 1887 #ifdef INVARIANTS
 1888         if ((cnp->cn_flags & HASBUF) == 0)
 1889                 panic("ext2_makeinode: no name");
 1890 #endif
 1891         *vpp = NULL;
 1892         if ((mode & IFMT) == 0)
 1893                 mode |= IFREG;
 1894 
 1895         error = ext2_valloc(dvp, mode, cnp->cn_cred, &tvp);
 1896         if (error) {
 1897                 return (error);
 1898         }
 1899         ip = VTOI(tvp);
 1900         ip->i_gid = pdir->i_gid;
 1901 #ifdef SUIDDIR
 1902         {
 1903                 /*
 1904                  * if we are
 1905                  * not the owner of the directory,
 1906                  * and we are hacking owners here, (only do this where told to)
 1907                  * and we are not giving it TOO root, (would subvert quotas)
 1908                  * then go ahead and give it to the other user.
 1909                  * Note that this drops off the execute bits for security.
 1910                  */
 1911                 if ((dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
 1912                     (pdir->i_mode & ISUID) &&
 1913                     (pdir->i_uid != cnp->cn_cred->cr_uid) && pdir->i_uid) {
 1914                         ip->i_uid = pdir->i_uid;
 1915                         mode &= ~07111;
 1916                 } else {
 1917                         ip->i_uid = cnp->cn_cred->cr_uid;
 1918                 }
 1919         }
 1920 #else
 1921         ip->i_uid = cnp->cn_cred->cr_uid;
 1922 #endif
 1923         ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
 1924         ip->i_mode = mode;
 1925         tvp->v_type = IFTOVT(mode);     /* Rest init'd in getnewvnode(). */
 1926         ip->i_nlink = 1;
 1927         if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred)) {
 1928                 if (priv_check_cred(cnp->cn_cred, PRIV_VFS_RETAINSUGID, 0))
 1929                         ip->i_mode &= ~ISGID;
 1930         }
 1931 
 1932         if (cnp->cn_flags & ISWHITEOUT)
 1933                 ip->i_flags |= UF_OPAQUE;
 1934 
 1935         /*
 1936          * Make sure inode goes to disk before directory entry.
 1937          */
 1938         error = ext2_update(tvp, !DOINGASYNC(tvp));
 1939         if (error)
 1940                 goto bad;
 1941 
 1942 #ifdef UFS_ACL
 1943         if (dvp->v_mount->mnt_flag & MNT_ACLS) {
 1944                 error = ext2_do_posix1e_acl_inheritance_file(dvp, tvp, mode,
 1945                     cnp->cn_cred, cnp->cn_thread);
 1946                 if (error)
 1947                         goto bad;
 1948         }
 1949 #endif /* UFS_ACL */
 1950 
 1951         error = ext2_direnter(ip, dvp, cnp);
 1952         if (error)
 1953                 goto bad;
 1954 
 1955         *vpp = tvp;
 1956         return (0);
 1957 
 1958 bad:
 1959         /*
 1960          * Write error occurred trying to update the inode
 1961          * or the directory so must deallocate the inode.
 1962          */
 1963         ip->i_nlink = 0;
 1964         ip->i_flag |= IN_CHANGE;
 1965         vput(tvp);
 1966         return (error);
 1967 }
 1968 
 1969 /*
 1970  * Vnode op for reading.
 1971  */
 1972 static int
 1973 ext2_read(struct vop_read_args *ap)
 1974 {
 1975         struct vnode *vp;
 1976         struct inode *ip;
 1977         int error;
 1978 
 1979         vp = ap->a_vp;
 1980         ip = VTOI(vp);
 1981 
 1982         /* EXT4_EXT_LOCK(ip); */
 1983         if (ip->i_flag & IN_E4EXTENTS)
 1984                 error = ext4_ext_read(ap);
 1985         else
 1986                 error = ext2_ind_read(ap);
 1987         /* EXT4_EXT_UNLOCK(ip); */
 1988         return (error);
 1989 }
 1990 
 1991 /*
 1992  * Vnode op for reading.
 1993  */
 1994 static int
 1995 ext2_ind_read(struct vop_read_args *ap)
 1996 {
 1997         struct vnode *vp;
 1998         struct inode *ip;
 1999         struct uio *uio;
 2000         struct m_ext2fs *fs;
 2001         struct buf *bp;
 2002         daddr_t lbn, nextlbn;
 2003         off_t bytesinfile;
 2004         long size, xfersize, blkoffset;
 2005         int error, orig_resid, seqcount;
 2006         int ioflag;
 2007 
 2008         vp = ap->a_vp;
 2009         uio = ap->a_uio;
 2010         ioflag = ap->a_ioflag;
 2011 
 2012         seqcount = ap->a_ioflag >> IO_SEQSHIFT;
 2013         ip = VTOI(vp);
 2014 
 2015 #ifdef INVARIANTS
 2016         if (uio->uio_rw != UIO_READ)
 2017                 panic("%s: mode", "ext2_read");
 2018 
 2019         if (vp->v_type == VLNK) {
 2020                 if ((int)ip->i_size < vp->v_mount->mnt_maxsymlinklen)
 2021                         panic("%s: short symlink", "ext2_read");
 2022         } else if (vp->v_type != VREG && vp->v_type != VDIR)
 2023                 panic("%s: type %d", "ext2_read", vp->v_type);
 2024 #endif
 2025         orig_resid = uio->uio_resid;
 2026         KASSERT(orig_resid >= 0, ("ext2_read: uio->uio_resid < 0"));
 2027         if (orig_resid == 0)
 2028                 return (0);
 2029         KASSERT(uio->uio_offset >= 0, ("ext2_read: uio->uio_offset < 0"));
 2030         fs = ip->i_e2fs;
 2031         if (uio->uio_offset < ip->i_size &&
 2032             uio->uio_offset >= fs->e2fs_maxfilesize)
 2033                 return (EOVERFLOW);
 2034 
 2035         for (error = 0, bp = NULL; uio->uio_resid > 0; bp = NULL) {
 2036                 if ((bytesinfile = ip->i_size - uio->uio_offset) <= 0)
 2037                         break;
 2038                 lbn = lblkno(fs, uio->uio_offset);
 2039                 nextlbn = lbn + 1;
 2040                 size = blksize(fs, ip, lbn);
 2041                 blkoffset = blkoff(fs, uio->uio_offset);
 2042 
 2043                 xfersize = fs->e2fs_fsize - blkoffset;
 2044                 if (uio->uio_resid < xfersize)
 2045                         xfersize = uio->uio_resid;
 2046                 if (bytesinfile < xfersize)
 2047                         xfersize = bytesinfile;
 2048 
 2049                 if (lblktosize(fs, nextlbn) >= ip->i_size)
 2050                         error = bread(vp, lbn, size, NOCRED, &bp);
 2051                 else if ((vp->v_mount->mnt_flag & MNT_NOCLUSTERR) == 0) {
 2052                         error = cluster_read(vp, ip->i_size, lbn, size,
 2053                             NOCRED, blkoffset + uio->uio_resid, seqcount,
 2054                             0, &bp);
 2055                 } else if (seqcount > 1) {
 2056                         u_int nextsize = blksize(fs, ip, nextlbn);
 2057 
 2058                         error = breadn(vp, lbn,
 2059                             size, &nextlbn, &nextsize, 1, NOCRED, &bp);
 2060                 } else
 2061                         error = bread(vp, lbn, size, NOCRED, &bp);
 2062                 if (error) {
 2063                         brelse(bp);
 2064                         bp = NULL;
 2065                         break;
 2066                 }
 2067 
 2068                 /*
 2069                  * We should only get non-zero b_resid when an I/O error
 2070                  * has occurred, which should cause us to break above.
 2071                  * However, if the short read did not cause an error,
 2072                  * then we want to ensure that we do not uiomove bad
 2073                  * or uninitialized data.
 2074                  */
 2075                 size -= bp->b_resid;
 2076                 if (size < xfersize) {
 2077                         if (size == 0)
 2078                                 break;
 2079                         xfersize = size;
 2080                 }
 2081                 error = uiomove((char *)bp->b_data + blkoffset,
 2082                     (int)xfersize, uio);
 2083                 if (error)
 2084                         break;
 2085                 vfs_bio_brelse(bp, ioflag);
 2086         }
 2087 
 2088         /*
 2089          * This can only happen in the case of an error because the loop
 2090          * above resets bp to NULL on each iteration and on normal
 2091          * completion has not set a new value into it. so it must have come
 2092          * from a 'break' statement
 2093          */
 2094         if (bp != NULL)
 2095                 vfs_bio_brelse(bp, ioflag);
 2096 
 2097         if ((error == 0 || uio->uio_resid != orig_resid) &&
 2098             (vp->v_mount->mnt_flag & (MNT_NOATIME | MNT_RDONLY)) == 0)
 2099                 ip->i_flag |= IN_ACCESS;
 2100         return (error);
 2101 }
 2102 
 2103 static int
 2104 ext2_ioctl(struct vop_ioctl_args *ap)
 2105 {
 2106 
 2107         switch (ap->a_command) {
 2108         case FIOSEEKDATA:
 2109         case FIOSEEKHOLE:
 2110                 return (vn_bmap_seekhole(ap->a_vp, ap->a_command,
 2111                     (off_t *)ap->a_data, ap->a_cred));
 2112         default:
 2113                 return (ENOTTY);
 2114         }
 2115 }
 2116 
 2117 /*
 2118  * this function handles ext4 extents block mapping
 2119  */
 2120 static int
 2121 ext4_ext_read(struct vop_read_args *ap)
 2122 {
 2123         static unsigned char zeroes[EXT2_MAX_BLOCK_SIZE];
 2124         struct vnode *vp;
 2125         struct inode *ip;
 2126         struct uio *uio;
 2127         struct m_ext2fs *fs;
 2128         struct buf *bp;
 2129         struct ext4_extent nex, *ep;
 2130         struct ext4_extent_path path;
 2131         daddr_t lbn, newblk;
 2132         off_t bytesinfile;
 2133         int cache_type;
 2134         ssize_t orig_resid;
 2135         int error;
 2136         long size, xfersize, blkoffset;
 2137 
 2138         vp = ap->a_vp;
 2139         ip = VTOI(vp);
 2140         uio = ap->a_uio;
 2141         memset(&path, 0, sizeof(path));
 2142 
 2143         orig_resid = uio->uio_resid;
 2144         KASSERT(orig_resid >= 0, ("%s: uio->uio_resid < 0", __func__));
 2145         if (orig_resid == 0)
 2146                 return (0);
 2147         KASSERT(uio->uio_offset >= 0, ("%s: uio->uio_offset < 0", __func__));
 2148         fs = ip->i_e2fs;
 2149         if (uio->uio_offset < ip->i_size && uio->uio_offset >= fs->e2fs_maxfilesize)
 2150                 return (EOVERFLOW);
 2151 
 2152         while (uio->uio_resid > 0) {
 2153                 if ((bytesinfile = ip->i_size - uio->uio_offset) <= 0)
 2154                         break;
 2155                 lbn = lblkno(fs, uio->uio_offset);
 2156                 size = blksize(fs, ip, lbn);
 2157                 blkoffset = blkoff(fs, uio->uio_offset);
 2158 
 2159                 xfersize = fs->e2fs_fsize - blkoffset;
 2160                 xfersize = MIN(xfersize, uio->uio_resid);
 2161                 xfersize = MIN(xfersize, bytesinfile);
 2162 
 2163                 /* get block from ext4 extent cache */
 2164                 cache_type = ext4_ext_in_cache(ip, lbn, &nex);
 2165                 switch (cache_type) {
 2166                 case EXT4_EXT_CACHE_NO:
 2167                         ext4_ext_find_extent(fs, ip, lbn, &path);
 2168                         if (path.ep_is_sparse)
 2169                                 ep = &path.ep_sparse_ext;
 2170                         else
 2171                                 ep = path.ep_ext;
 2172                         if (ep == NULL)
 2173                                 return (EIO);
 2174 
 2175                         ext4_ext_put_cache(ip, ep,
 2176                             path.ep_is_sparse ? EXT4_EXT_CACHE_GAP : EXT4_EXT_CACHE_IN);
 2177 
 2178                         newblk = lbn - ep->e_blk + (ep->e_start_lo |
 2179                             (daddr_t)ep->e_start_hi << 32);
 2180 
 2181                         if (path.ep_bp != NULL) {
 2182                                 brelse(path.ep_bp);
 2183                                 path.ep_bp = NULL;
 2184                         }
 2185                         break;
 2186 
 2187                 case EXT4_EXT_CACHE_GAP:
 2188                         /* block has not been allocated yet */
 2189                         break;
 2190 
 2191                 case EXT4_EXT_CACHE_IN:
 2192                         newblk = lbn - nex.e_blk + (nex.e_start_lo |
 2193                             (daddr_t)nex.e_start_hi << 32);
 2194                         break;
 2195 
 2196                 default:
 2197                         panic("%s: invalid cache type", __func__);
 2198                 }
 2199 
 2200                 if (cache_type == EXT4_EXT_CACHE_GAP ||
 2201                     (cache_type == EXT4_EXT_CACHE_NO && path.ep_is_sparse)) {
 2202                         if (xfersize > sizeof(zeroes))
 2203                                 xfersize = sizeof(zeroes);
 2204                         error = uiomove(zeroes, xfersize, uio);
 2205                         if (error)
 2206                                 return (error);
 2207                 } else {
 2208                         error = bread(ip->i_devvp, fsbtodb(fs, newblk), size,
 2209                             NOCRED, &bp);
 2210                         if (error) {
 2211                                 brelse(bp);
 2212                                 return (error);
 2213                         }
 2214 
 2215                         size -= bp->b_resid;
 2216                         if (size < xfersize) {
 2217                                 if (size == 0) {
 2218                                         bqrelse(bp);
 2219                                         break;
 2220                                 }
 2221                                 xfersize = size;
 2222                         }
 2223                         error = uiomove(bp->b_data + blkoffset, xfersize, uio);
 2224                         bqrelse(bp);
 2225                         if (error)
 2226                                 return (error);
 2227                 }
 2228         }
 2229 
 2230         return (0);
 2231 }
 2232 
 2233 /*
 2234  * Vnode op for writing.
 2235  */
 2236 static int
 2237 ext2_write(struct vop_write_args *ap)
 2238 {
 2239         struct vnode *vp;
 2240         struct uio *uio;
 2241         struct inode *ip;
 2242         struct m_ext2fs *fs;
 2243         struct buf *bp;
 2244         daddr_t lbn;
 2245         off_t osize;
 2246         int blkoffset, error, flags, ioflag, resid, size, seqcount, xfersize;
 2247 
 2248         ioflag = ap->a_ioflag;
 2249         uio = ap->a_uio;
 2250         vp = ap->a_vp;
 2251 
 2252         seqcount = ioflag >> IO_SEQSHIFT;
 2253         ip = VTOI(vp);
 2254 
 2255 #ifdef INVARIANTS
 2256         if (uio->uio_rw != UIO_WRITE)
 2257                 panic("%s: mode", "ext2_write");
 2258 #endif
 2259 
 2260         switch (vp->v_type) {
 2261         case VREG:
 2262                 if (ioflag & IO_APPEND)
 2263                         uio->uio_offset = ip->i_size;
 2264                 if ((ip->i_flags & APPEND) && uio->uio_offset != ip->i_size)
 2265                         return (EPERM);
 2266                 /* FALLTHROUGH */
 2267         case VLNK:
 2268                 break;
 2269         case VDIR:
 2270                 /* XXX differs from ffs -- this is called from ext2_mkdir(). */
 2271                 if ((ioflag & IO_SYNC) == 0)
 2272                         panic("ext2_write: nonsync dir write");
 2273                 break;
 2274         default:
 2275                 panic("ext2_write: type %p %d (%jd,%jd)", (void *)vp,
 2276                     vp->v_type, (intmax_t)uio->uio_offset,
 2277                     (intmax_t)uio->uio_resid);
 2278         }
 2279 
 2280         KASSERT(uio->uio_resid >= 0, ("ext2_write: uio->uio_resid < 0"));
 2281         KASSERT(uio->uio_offset >= 0, ("ext2_write: uio->uio_offset < 0"));
 2282         fs = ip->i_e2fs;
 2283         if ((uoff_t)uio->uio_offset + uio->uio_resid > fs->e2fs_maxfilesize)
 2284                 return (EFBIG);
 2285         /*
 2286          * Maybe this should be above the vnode op call, but so long as
 2287          * file servers have no limits, I don't think it matters.
 2288          */
 2289         if (vn_rlimit_fsize(vp, uio, uio->uio_td))
 2290                 return (EFBIG);
 2291 
 2292         resid = uio->uio_resid;
 2293         osize = ip->i_size;
 2294         if (seqcount > BA_SEQMAX)
 2295                 flags = BA_SEQMAX << BA_SEQSHIFT;
 2296         else
 2297                 flags = seqcount << BA_SEQSHIFT;
 2298         if ((ioflag & IO_SYNC) && !DOINGASYNC(vp))
 2299                 flags |= IO_SYNC;
 2300 
 2301         for (error = 0; uio->uio_resid > 0;) {
 2302                 lbn = lblkno(fs, uio->uio_offset);
 2303                 blkoffset = blkoff(fs, uio->uio_offset);
 2304                 xfersize = fs->e2fs_fsize - blkoffset;
 2305                 if (uio->uio_resid < xfersize)
 2306                         xfersize = uio->uio_resid;
 2307                 if (uio->uio_offset + xfersize > ip->i_size)
 2308                         vnode_pager_setsize(vp, uio->uio_offset + xfersize);
 2309 
 2310                 /*
 2311                  * We must perform a read-before-write if the transfer size
 2312                  * does not cover the entire buffer.
 2313                  */
 2314                 if (fs->e2fs_bsize > xfersize)
 2315                         flags |= BA_CLRBUF;
 2316                 else
 2317                         flags &= ~BA_CLRBUF;
 2318                 error = ext2_balloc(ip, lbn, blkoffset + xfersize,
 2319                     ap->a_cred, &bp, flags);
 2320                 if (error != 0)
 2321                         break;
 2322 
 2323                 if ((ioflag & (IO_SYNC | IO_INVAL)) == (IO_SYNC | IO_INVAL))
 2324                         bp->b_flags |= B_NOCACHE;
 2325                 if (uio->uio_offset + xfersize > ip->i_size)
 2326                         ip->i_size = uio->uio_offset + xfersize;
 2327                 size = blksize(fs, ip, lbn) - bp->b_resid;
 2328                 if (size < xfersize)
 2329                         xfersize = size;
 2330 
 2331                 error =
 2332                     uiomove((char *)bp->b_data + blkoffset, (int)xfersize, uio);
 2333                 /*
 2334                  * If the buffer is not already filled and we encounter an
 2335                  * error while trying to fill it, we have to clear out any
 2336                  * garbage data from the pages instantiated for the buffer.
 2337                  * If we do not, a failed uiomove() during a write can leave
 2338                  * the prior contents of the pages exposed to a userland mmap.
 2339                  *
 2340                  * Note that we need only clear buffers with a transfer size
 2341                  * equal to the block size because buffers with a shorter
 2342                  * transfer size were cleared above by the call to ext2_balloc()
 2343                  * with the BA_CLRBUF flag set.
 2344                  *
 2345                  * If the source region for uiomove identically mmaps the
 2346                  * buffer, uiomove() performed the NOP copy, and the buffer
 2347                  * content remains valid because the page fault handler
 2348                  * validated the pages.
 2349                  */
 2350                 if (error != 0 && (bp->b_flags & B_CACHE) == 0 &&
 2351                     fs->e2fs_bsize == xfersize)
 2352                         vfs_bio_clrbuf(bp);
 2353 
 2354                 vfs_bio_set_flags(bp, ioflag);
 2355 
 2356                 /*
 2357                  * If IO_SYNC each buffer is written synchronously.  Otherwise
 2358                  * if we have a severe page deficiency write the buffer
 2359                  * asynchronously.  Otherwise try to cluster, and if that
 2360                  * doesn't do it then either do an async write (if O_DIRECT),
 2361                  * or a delayed write (if not).
 2362                  */
 2363                 if (ioflag & IO_SYNC) {
 2364                         (void)bwrite(bp);
 2365                 } else if (vm_page_count_severe() ||
 2366                             buf_dirty_count_severe() ||
 2367                     (ioflag & IO_ASYNC)) {
 2368                         bp->b_flags |= B_CLUSTEROK;
 2369                         bawrite(bp);
 2370                 } else if (xfersize + blkoffset == fs->e2fs_fsize) {
 2371                         if ((vp->v_mount->mnt_flag & MNT_NOCLUSTERW) == 0) {
 2372                                 bp->b_flags |= B_CLUSTEROK;
 2373                                 cluster_write(vp, bp, ip->i_size, seqcount, 0);
 2374                         } else {
 2375                                 bawrite(bp);
 2376                         }
 2377                 } else if (ioflag & IO_DIRECT) {
 2378                         bp->b_flags |= B_CLUSTEROK;
 2379                         bawrite(bp);
 2380                 } else {
 2381                         bp->b_flags |= B_CLUSTEROK;
 2382                         bdwrite(bp);
 2383                 }
 2384                 if (error || xfersize == 0)
 2385                         break;
 2386         }
 2387         /*
 2388          * If we successfully wrote any data, and we are not the superuser
 2389          * we clear the setuid and setgid bits as a precaution against
 2390          * tampering.
 2391          */
 2392         if ((ip->i_mode & (ISUID | ISGID)) && resid > uio->uio_resid &&
 2393             ap->a_cred) {
 2394                 if (priv_check_cred(ap->a_cred, PRIV_VFS_RETAINSUGID, 0))
 2395                         ip->i_mode &= ~(ISUID | ISGID);
 2396         }
 2397         if (error) {
 2398                 if (ioflag & IO_UNIT) {
 2399                         (void)ext2_truncate(vp, osize,
 2400                             ioflag & IO_SYNC, ap->a_cred, uio->uio_td);
 2401                         uio->uio_offset -= resid - uio->uio_resid;
 2402                         uio->uio_resid = resid;
 2403                 }
 2404         }
 2405         if (uio->uio_resid != resid) {
 2406                 ip->i_flag |= IN_CHANGE | IN_UPDATE;
 2407                 if (ioflag & IO_SYNC)
 2408                         error = ext2_update(vp, 1);
 2409         }
 2410         return (error);
 2411 }

Cache object: 9f07fa4c3cc4044455a098511b8feec0


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