827 lines
19 KiB
C
827 lines
19 KiB
C
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2011, Lawrence Livermore National Security, LLC.
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* Copyright (c) 2015 by Chunwei Chen. All rights reserved.
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*/
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#include <sys/zfs_ctldir.h>
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#include <sys/zfs_vfsops.h>
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#include <sys/zfs_vnops.h>
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#include <sys/zfs_znode.h>
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#include <sys/dmu_objset.h>
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#include <sys/vfs.h>
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#include <sys/zpl.h>
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#include <sys/file.h>
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static struct dentry *
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#ifdef HAVE_LOOKUP_NAMEIDATA
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zpl_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
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#else
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zpl_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
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#endif
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{
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cred_t *cr = CRED();
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struct inode *ip;
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int error;
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fstrans_cookie_t cookie;
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pathname_t *ppn = NULL;
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pathname_t pn;
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int zfs_flags = 0;
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zfsvfs_t *zfsvfs = dentry->d_sb->s_fs_info;
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if (dlen(dentry) >= ZAP_MAXNAMELEN)
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return (ERR_PTR(-ENAMETOOLONG));
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crhold(cr);
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cookie = spl_fstrans_mark();
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/* If we are a case insensitive fs, we need the real name */
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if (zfsvfs->z_case == ZFS_CASE_INSENSITIVE) {
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zfs_flags = FIGNORECASE;
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pn_alloc(&pn);
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ppn = &pn;
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}
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error = -zfs_lookup(dir, dname(dentry), &ip, zfs_flags, cr, NULL, ppn);
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spl_fstrans_unmark(cookie);
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ASSERT3S(error, <=, 0);
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crfree(cr);
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spin_lock(&dentry->d_lock);
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dentry->d_time = jiffies;
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#ifndef HAVE_S_D_OP
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d_set_d_op(dentry, &zpl_dentry_operations);
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#endif /* HAVE_S_D_OP */
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spin_unlock(&dentry->d_lock);
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if (error) {
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/*
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* If we have a case sensitive fs, we do not want to
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* insert negative entries, so return NULL for ENOENT.
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* Fall through if the error is not ENOENT. Also free memory.
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*/
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if (ppn) {
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pn_free(ppn);
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if (error == -ENOENT)
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return (NULL);
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}
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if (error == -ENOENT)
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return (d_splice_alias(NULL, dentry));
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else
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return (ERR_PTR(error));
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}
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/*
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* If we are case insensitive, call the correct function
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* to install the name.
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*/
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if (ppn) {
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struct dentry *new_dentry;
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struct qstr ci_name;
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if (strcmp(dname(dentry), pn.pn_buf) == 0) {
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new_dentry = d_splice_alias(ip, dentry);
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} else {
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ci_name.name = pn.pn_buf;
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ci_name.len = strlen(pn.pn_buf);
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new_dentry = d_add_ci(dentry, ip, &ci_name);
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}
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pn_free(ppn);
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return (new_dentry);
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} else {
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return (d_splice_alias(ip, dentry));
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}
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}
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void
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zpl_vap_init(vattr_t *vap, struct inode *dir, zpl_umode_t mode, cred_t *cr)
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{
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vap->va_mask = ATTR_MODE;
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vap->va_mode = mode;
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vap->va_uid = crgetfsuid(cr);
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if (dir && dir->i_mode & S_ISGID) {
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vap->va_gid = KGID_TO_SGID(dir->i_gid);
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if (S_ISDIR(mode))
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vap->va_mode |= S_ISGID;
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} else {
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vap->va_gid = crgetfsgid(cr);
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}
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}
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static int
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#ifdef HAVE_CREATE_NAMEIDATA
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zpl_create(struct inode *dir, struct dentry *dentry, zpl_umode_t mode,
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struct nameidata *nd)
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#else
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zpl_create(struct inode *dir, struct dentry *dentry, zpl_umode_t mode,
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bool flag)
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#endif
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{
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cred_t *cr = CRED();
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struct inode *ip;
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vattr_t *vap;
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int error;
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fstrans_cookie_t cookie;
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crhold(cr);
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vap = kmem_zalloc(sizeof (vattr_t), KM_SLEEP);
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zpl_vap_init(vap, dir, mode, cr);
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cookie = spl_fstrans_mark();
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error = -zfs_create(dir, dname(dentry), vap, 0, mode, &ip, cr, 0, NULL);
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if (error == 0) {
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d_instantiate(dentry, ip);
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error = zpl_xattr_security_init(ip, dir, &dentry->d_name);
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if (error == 0)
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error = zpl_init_acl(ip, dir);
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if (error)
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(void) zfs_remove(dir, dname(dentry), cr, 0);
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}
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spl_fstrans_unmark(cookie);
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kmem_free(vap, sizeof (vattr_t));
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crfree(cr);
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ASSERT3S(error, <=, 0);
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return (error);
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}
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static int
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zpl_mknod(struct inode *dir, struct dentry *dentry, zpl_umode_t mode,
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dev_t rdev)
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{
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cred_t *cr = CRED();
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struct inode *ip;
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vattr_t *vap;
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int error;
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fstrans_cookie_t cookie;
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/*
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* We currently expect Linux to supply rdev=0 for all sockets
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* and fifos, but we want to know if this behavior ever changes.
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*/
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if (S_ISSOCK(mode) || S_ISFIFO(mode))
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ASSERT(rdev == 0);
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crhold(cr);
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vap = kmem_zalloc(sizeof (vattr_t), KM_SLEEP);
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zpl_vap_init(vap, dir, mode, cr);
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vap->va_rdev = rdev;
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cookie = spl_fstrans_mark();
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error = -zfs_create(dir, dname(dentry), vap, 0, mode, &ip, cr, 0, NULL);
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if (error == 0) {
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d_instantiate(dentry, ip);
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error = zpl_xattr_security_init(ip, dir, &dentry->d_name);
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if (error == 0)
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error = zpl_init_acl(ip, dir);
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if (error)
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(void) zfs_remove(dir, dname(dentry), cr, 0);
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}
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spl_fstrans_unmark(cookie);
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kmem_free(vap, sizeof (vattr_t));
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crfree(cr);
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ASSERT3S(error, <=, 0);
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return (error);
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}
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#ifdef HAVE_TMPFILE
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static int
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zpl_tmpfile(struct inode *dir, struct dentry *dentry, zpl_umode_t mode)
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{
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cred_t *cr = CRED();
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struct inode *ip;
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vattr_t *vap;
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int error;
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fstrans_cookie_t cookie;
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crhold(cr);
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vap = kmem_zalloc(sizeof (vattr_t), KM_SLEEP);
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zpl_vap_init(vap, dir, mode, cr);
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cookie = spl_fstrans_mark();
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error = -zfs_tmpfile(dir, vap, 0, mode, &ip, cr, 0, NULL);
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if (error == 0) {
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/* d_tmpfile will do drop_nlink, so we should set it first */
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set_nlink(ip, 1);
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d_tmpfile(dentry, ip);
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error = zpl_xattr_security_init(ip, dir, &dentry->d_name);
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if (error == 0)
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error = zpl_init_acl(ip, dir);
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/*
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* don't need to handle error here, file is already in
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* unlinked set.
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*/
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}
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spl_fstrans_unmark(cookie);
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kmem_free(vap, sizeof (vattr_t));
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crfree(cr);
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ASSERT3S(error, <=, 0);
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return (error);
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}
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#endif
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static int
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zpl_unlink(struct inode *dir, struct dentry *dentry)
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{
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cred_t *cr = CRED();
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int error;
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fstrans_cookie_t cookie;
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zfsvfs_t *zfsvfs = dentry->d_sb->s_fs_info;
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crhold(cr);
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cookie = spl_fstrans_mark();
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error = -zfs_remove(dir, dname(dentry), cr, 0);
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|
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|
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|
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/*
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* For a CI FS we must invalidate the dentry to prevent the
|
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* creation of negative entries.
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*/
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if (error == 0 && zfsvfs->z_case == ZFS_CASE_INSENSITIVE)
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d_invalidate(dentry);
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spl_fstrans_unmark(cookie);
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crfree(cr);
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ASSERT3S(error, <=, 0);
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return (error);
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}
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|
|
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||
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static int
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zpl_mkdir(struct inode *dir, struct dentry *dentry, zpl_umode_t mode)
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{
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cred_t *cr = CRED();
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vattr_t *vap;
|
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|
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struct inode *ip;
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|
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int error;
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fstrans_cookie_t cookie;
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|
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crhold(cr);
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vap = kmem_zalloc(sizeof (vattr_t), KM_SLEEP);
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zpl_vap_init(vap, dir, mode | S_IFDIR, cr);
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cookie = spl_fstrans_mark();
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error = -zfs_mkdir(dir, dname(dentry), vap, &ip, cr, 0, NULL);
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if (error == 0) {
|
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d_instantiate(dentry, ip);
|
||
|
|
|
||
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error = zpl_xattr_security_init(ip, dir, &dentry->d_name);
|
||
|
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if (error == 0)
|
||
|
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error = zpl_init_acl(ip, dir);
|
||
|
|
|
||
|
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if (error)
|
||
|
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(void) zfs_rmdir(dir, dname(dentry), NULL, cr, 0);
|
||
|
|
}
|
||
|
|
|
||
|
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spl_fstrans_unmark(cookie);
|
||
|
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kmem_free(vap, sizeof (vattr_t));
|
||
|
|
crfree(cr);
|
||
|
|
ASSERT3S(error, <=, 0);
|
||
|
|
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
zpl_rmdir(struct inode *dir, struct dentry *dentry)
|
||
|
|
{
|
||
|
|
cred_t *cr = CRED();
|
||
|
|
int error;
|
||
|
|
fstrans_cookie_t cookie;
|
||
|
|
zfsvfs_t *zfsvfs = dentry->d_sb->s_fs_info;
|
||
|
|
|
||
|
|
crhold(cr);
|
||
|
|
cookie = spl_fstrans_mark();
|
||
|
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error = -zfs_rmdir(dir, dname(dentry), NULL, cr, 0);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* For a CI FS we must invalidate the dentry to prevent the
|
||
|
|
* creation of negative entries.
|
||
|
|
*/
|
||
|
|
if (error == 0 && zfsvfs->z_case == ZFS_CASE_INSENSITIVE)
|
||
|
|
d_invalidate(dentry);
|
||
|
|
|
||
|
|
spl_fstrans_unmark(cookie);
|
||
|
|
crfree(cr);
|
||
|
|
ASSERT3S(error, <=, 0);
|
||
|
|
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
zpl_getattr_impl(const struct path *path, struct kstat *stat, u32 request_mask,
|
||
|
|
unsigned int query_flags)
|
||
|
|
{
|
||
|
|
int error;
|
||
|
|
fstrans_cookie_t cookie;
|
||
|
|
|
||
|
|
cookie = spl_fstrans_mark();
|
||
|
|
|
||
|
|
/*
|
||
|
|
* XXX request_mask and query_flags currently ignored.
|
||
|
|
*/
|
||
|
|
|
||
|
|
error = -zfs_getattr_fast(path->dentry->d_inode, stat);
|
||
|
|
spl_fstrans_unmark(cookie);
|
||
|
|
ASSERT3S(error, <=, 0);
|
||
|
|
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
ZPL_GETATTR_WRAPPER(zpl_getattr);
|
||
|
|
|
||
|
|
static int
|
||
|
|
zpl_setattr(struct dentry *dentry, struct iattr *ia)
|
||
|
|
{
|
||
|
|
struct inode *ip = dentry->d_inode;
|
||
|
|
cred_t *cr = CRED();
|
||
|
|
vattr_t *vap;
|
||
|
|
int error;
|
||
|
|
fstrans_cookie_t cookie;
|
||
|
|
|
||
|
|
error = setattr_prepare(dentry, ia);
|
||
|
|
if (error)
|
||
|
|
return (error);
|
||
|
|
|
||
|
|
crhold(cr);
|
||
|
|
vap = kmem_zalloc(sizeof (vattr_t), KM_SLEEP);
|
||
|
|
vap->va_mask = ia->ia_valid & ATTR_IATTR_MASK;
|
||
|
|
vap->va_mode = ia->ia_mode;
|
||
|
|
vap->va_uid = KUID_TO_SUID(ia->ia_uid);
|
||
|
|
vap->va_gid = KGID_TO_SGID(ia->ia_gid);
|
||
|
|
vap->va_size = ia->ia_size;
|
||
|
|
vap->va_atime = ia->ia_atime;
|
||
|
|
vap->va_mtime = ia->ia_mtime;
|
||
|
|
vap->va_ctime = ia->ia_ctime;
|
||
|
|
|
||
|
|
if (vap->va_mask & ATTR_ATIME) {
|
||
|
|
ip->i_atime = zpl_inode_timespec_trunc(ia->ia_atime,
|
||
|
|
ip->i_sb->s_time_gran);
|
||
|
|
}
|
||
|
|
|
||
|
|
cookie = spl_fstrans_mark();
|
||
|
|
error = -zfs_setattr(ip, vap, 0, cr);
|
||
|
|
if (!error && (ia->ia_valid & ATTR_MODE))
|
||
|
|
error = zpl_chmod_acl(ip);
|
||
|
|
|
||
|
|
spl_fstrans_unmark(cookie);
|
||
|
|
kmem_free(vap, sizeof (vattr_t));
|
||
|
|
crfree(cr);
|
||
|
|
ASSERT3S(error, <=, 0);
|
||
|
|
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
zpl_rename2(struct inode *sdip, struct dentry *sdentry,
|
||
|
|
struct inode *tdip, struct dentry *tdentry, unsigned int flags)
|
||
|
|
{
|
||
|
|
cred_t *cr = CRED();
|
||
|
|
int error;
|
||
|
|
fstrans_cookie_t cookie;
|
||
|
|
|
||
|
|
/* We don't have renameat2(2) support */
|
||
|
|
if (flags)
|
||
|
|
return (-EINVAL);
|
||
|
|
|
||
|
|
crhold(cr);
|
||
|
|
cookie = spl_fstrans_mark();
|
||
|
|
error = -zfs_rename(sdip, dname(sdentry), tdip, dname(tdentry), cr, 0);
|
||
|
|
spl_fstrans_unmark(cookie);
|
||
|
|
crfree(cr);
|
||
|
|
ASSERT3S(error, <=, 0);
|
||
|
|
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifndef HAVE_RENAME_WANTS_FLAGS
|
||
|
|
static int
|
||
|
|
zpl_rename(struct inode *sdip, struct dentry *sdentry,
|
||
|
|
struct inode *tdip, struct dentry *tdentry)
|
||
|
|
{
|
||
|
|
return (zpl_rename2(sdip, sdentry, tdip, tdentry, 0));
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static int
|
||
|
|
zpl_symlink(struct inode *dir, struct dentry *dentry, const char *name)
|
||
|
|
{
|
||
|
|
cred_t *cr = CRED();
|
||
|
|
vattr_t *vap;
|
||
|
|
struct inode *ip;
|
||
|
|
int error;
|
||
|
|
fstrans_cookie_t cookie;
|
||
|
|
|
||
|
|
crhold(cr);
|
||
|
|
vap = kmem_zalloc(sizeof (vattr_t), KM_SLEEP);
|
||
|
|
zpl_vap_init(vap, dir, S_IFLNK | S_IRWXUGO, cr);
|
||
|
|
|
||
|
|
cookie = spl_fstrans_mark();
|
||
|
|
error = -zfs_symlink(dir, dname(dentry), vap, (char *)name, &ip, cr, 0);
|
||
|
|
if (error == 0) {
|
||
|
|
d_instantiate(dentry, ip);
|
||
|
|
|
||
|
|
error = zpl_xattr_security_init(ip, dir, &dentry->d_name);
|
||
|
|
if (error)
|
||
|
|
(void) zfs_remove(dir, dname(dentry), cr, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
spl_fstrans_unmark(cookie);
|
||
|
|
kmem_free(vap, sizeof (vattr_t));
|
||
|
|
crfree(cr);
|
||
|
|
ASSERT3S(error, <=, 0);
|
||
|
|
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
|
||
|
|
#if defined(HAVE_PUT_LINK_COOKIE)
|
||
|
|
static void
|
||
|
|
zpl_put_link(struct inode *unused, void *cookie)
|
||
|
|
{
|
||
|
|
kmem_free(cookie, MAXPATHLEN);
|
||
|
|
}
|
||
|
|
#elif defined(HAVE_PUT_LINK_NAMEIDATA)
|
||
|
|
static void
|
||
|
|
zpl_put_link(struct dentry *dentry, struct nameidata *nd, void *ptr)
|
||
|
|
{
|
||
|
|
const char *link = nd_get_link(nd);
|
||
|
|
|
||
|
|
if (!IS_ERR(link))
|
||
|
|
kmem_free(link, MAXPATHLEN);
|
||
|
|
}
|
||
|
|
#elif defined(HAVE_PUT_LINK_DELAYED)
|
||
|
|
static void
|
||
|
|
zpl_put_link(void *ptr)
|
||
|
|
{
|
||
|
|
kmem_free(ptr, MAXPATHLEN);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static int
|
||
|
|
zpl_get_link_common(struct dentry *dentry, struct inode *ip, char **link)
|
||
|
|
{
|
||
|
|
fstrans_cookie_t cookie;
|
||
|
|
cred_t *cr = CRED();
|
||
|
|
struct iovec iov;
|
||
|
|
uio_t uio = { { 0 }, 0 };
|
||
|
|
int error;
|
||
|
|
|
||
|
|
crhold(cr);
|
||
|
|
*link = NULL;
|
||
|
|
iov.iov_len = MAXPATHLEN;
|
||
|
|
iov.iov_base = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
|
||
|
|
|
||
|
|
uio.uio_iov = &iov;
|
||
|
|
uio.uio_iovcnt = 1;
|
||
|
|
uio.uio_segflg = UIO_SYSSPACE;
|
||
|
|
uio.uio_resid = (MAXPATHLEN - 1);
|
||
|
|
|
||
|
|
cookie = spl_fstrans_mark();
|
||
|
|
error = -zfs_readlink(ip, &uio, cr);
|
||
|
|
spl_fstrans_unmark(cookie);
|
||
|
|
crfree(cr);
|
||
|
|
|
||
|
|
if (error)
|
||
|
|
kmem_free(iov.iov_base, MAXPATHLEN);
|
||
|
|
else
|
||
|
|
*link = iov.iov_base;
|
||
|
|
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
|
||
|
|
#if defined(HAVE_GET_LINK_DELAYED)
|
||
|
|
const char *
|
||
|
|
zpl_get_link(struct dentry *dentry, struct inode *inode,
|
||
|
|
struct delayed_call *done)
|
||
|
|
{
|
||
|
|
char *link = NULL;
|
||
|
|
int error;
|
||
|
|
|
||
|
|
if (!dentry)
|
||
|
|
return (ERR_PTR(-ECHILD));
|
||
|
|
|
||
|
|
error = zpl_get_link_common(dentry, inode, &link);
|
||
|
|
if (error)
|
||
|
|
return (ERR_PTR(error));
|
||
|
|
|
||
|
|
set_delayed_call(done, zpl_put_link, link);
|
||
|
|
|
||
|
|
return (link);
|
||
|
|
}
|
||
|
|
#elif defined(HAVE_GET_LINK_COOKIE)
|
||
|
|
const char *
|
||
|
|
zpl_get_link(struct dentry *dentry, struct inode *inode, void **cookie)
|
||
|
|
{
|
||
|
|
char *link = NULL;
|
||
|
|
int error;
|
||
|
|
|
||
|
|
if (!dentry)
|
||
|
|
return (ERR_PTR(-ECHILD));
|
||
|
|
|
||
|
|
error = zpl_get_link_common(dentry, inode, &link);
|
||
|
|
if (error)
|
||
|
|
return (ERR_PTR(error));
|
||
|
|
|
||
|
|
return (*cookie = link);
|
||
|
|
}
|
||
|
|
#elif defined(HAVE_FOLLOW_LINK_COOKIE)
|
||
|
|
const char *
|
||
|
|
zpl_follow_link(struct dentry *dentry, void **cookie)
|
||
|
|
{
|
||
|
|
char *link = NULL;
|
||
|
|
int error;
|
||
|
|
|
||
|
|
error = zpl_get_link_common(dentry, dentry->d_inode, &link);
|
||
|
|
if (error)
|
||
|
|
return (ERR_PTR(error));
|
||
|
|
|
||
|
|
return (*cookie = link);
|
||
|
|
}
|
||
|
|
#elif defined(HAVE_FOLLOW_LINK_NAMEIDATA)
|
||
|
|
static void *
|
||
|
|
zpl_follow_link(struct dentry *dentry, struct nameidata *nd)
|
||
|
|
{
|
||
|
|
char *link = NULL;
|
||
|
|
int error;
|
||
|
|
|
||
|
|
error = zpl_get_link_common(dentry, dentry->d_inode, &link);
|
||
|
|
if (error)
|
||
|
|
nd_set_link(nd, ERR_PTR(error));
|
||
|
|
else
|
||
|
|
nd_set_link(nd, link);
|
||
|
|
|
||
|
|
return (NULL);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static int
|
||
|
|
zpl_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
|
||
|
|
{
|
||
|
|
cred_t *cr = CRED();
|
||
|
|
struct inode *ip = old_dentry->d_inode;
|
||
|
|
int error;
|
||
|
|
fstrans_cookie_t cookie;
|
||
|
|
|
||
|
|
if (ip->i_nlink >= ZFS_LINK_MAX)
|
||
|
|
return (-EMLINK);
|
||
|
|
|
||
|
|
crhold(cr);
|
||
|
|
ip->i_ctime = current_time(ip);
|
||
|
|
igrab(ip); /* Use ihold() if available */
|
||
|
|
|
||
|
|
cookie = spl_fstrans_mark();
|
||
|
|
error = -zfs_link(dir, ip, dname(dentry), cr, 0);
|
||
|
|
if (error) {
|
||
|
|
iput(ip);
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
d_instantiate(dentry, ip);
|
||
|
|
out:
|
||
|
|
spl_fstrans_unmark(cookie);
|
||
|
|
crfree(cr);
|
||
|
|
ASSERT3S(error, <=, 0);
|
||
|
|
|
||
|
|
return (error);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef HAVE_INODE_TRUNCATE_RANGE
|
||
|
|
static void
|
||
|
|
zpl_truncate_range(struct inode *ip, loff_t start, loff_t end)
|
||
|
|
{
|
||
|
|
cred_t *cr = CRED();
|
||
|
|
flock64_t bf;
|
||
|
|
fstrans_cookie_t cookie;
|
||
|
|
|
||
|
|
ASSERT3S(start, <=, end);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* zfs_freesp() will interpret (len == 0) as meaning "truncate until
|
||
|
|
* the end of the file". We don't want that.
|
||
|
|
*/
|
||
|
|
if (start == end)
|
||
|
|
return;
|
||
|
|
|
||
|
|
crhold(cr);
|
||
|
|
|
||
|
|
bf.l_type = F_WRLCK;
|
||
|
|
bf.l_whence = SEEK_SET;
|
||
|
|
bf.l_start = start;
|
||
|
|
bf.l_len = end - start;
|
||
|
|
bf.l_pid = 0;
|
||
|
|
cookie = spl_fstrans_mark();
|
||
|
|
zfs_space(ip, F_FREESP, &bf, FWRITE, start, cr);
|
||
|
|
spl_fstrans_unmark(cookie);
|
||
|
|
|
||
|
|
crfree(cr);
|
||
|
|
}
|
||
|
|
#endif /* HAVE_INODE_TRUNCATE_RANGE */
|
||
|
|
|
||
|
|
#ifdef HAVE_INODE_FALLOCATE
|
||
|
|
static long
|
||
|
|
zpl_fallocate(struct inode *ip, int mode, loff_t offset, loff_t len)
|
||
|
|
{
|
||
|
|
return (zpl_fallocate_common(ip, mode, offset, len));
|
||
|
|
}
|
||
|
|
#endif /* HAVE_INODE_FALLOCATE */
|
||
|
|
|
||
|
|
static int
|
||
|
|
#ifdef HAVE_D_REVALIDATE_NAMEIDATA
|
||
|
|
zpl_revalidate(struct dentry *dentry, struct nameidata *nd)
|
||
|
|
{
|
||
|
|
unsigned int flags = (nd ? nd->flags : 0);
|
||
|
|
#else
|
||
|
|
zpl_revalidate(struct dentry *dentry, unsigned int flags)
|
||
|
|
{
|
||
|
|
#endif /* HAVE_D_REVALIDATE_NAMEIDATA */
|
||
|
|
/* CSTYLED */
|
||
|
|
zfsvfs_t *zfsvfs = dentry->d_sb->s_fs_info;
|
||
|
|
int error;
|
||
|
|
|
||
|
|
if (flags & LOOKUP_RCU)
|
||
|
|
return (-ECHILD);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Automounted snapshots rely on periodic dentry revalidation
|
||
|
|
* to defer snapshots from being automatically unmounted.
|
||
|
|
*/
|
||
|
|
if (zfsvfs->z_issnap) {
|
||
|
|
if (time_after(jiffies, zfsvfs->z_snap_defer_time +
|
||
|
|
MAX(zfs_expire_snapshot * HZ / 2, HZ))) {
|
||
|
|
zfsvfs->z_snap_defer_time = jiffies;
|
||
|
|
zfsctl_snapshot_unmount_delay(zfsvfs->z_os->os_spa,
|
||
|
|
dmu_objset_id(zfsvfs->z_os), zfs_expire_snapshot);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* After a rollback negative dentries created before the rollback
|
||
|
|
* time must be invalidated. Otherwise they can obscure files which
|
||
|
|
* are only present in the rolled back dataset.
|
||
|
|
*/
|
||
|
|
if (dentry->d_inode == NULL) {
|
||
|
|
spin_lock(&dentry->d_lock);
|
||
|
|
error = time_before(dentry->d_time, zfsvfs->z_rollback_time);
|
||
|
|
spin_unlock(&dentry->d_lock);
|
||
|
|
|
||
|
|
if (error)
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The dentry may reference a stale inode if a mounted file system
|
||
|
|
* was rolled back to a point in time where the object didn't exist.
|
||
|
|
*/
|
||
|
|
if (dentry->d_inode && ITOZ(dentry->d_inode)->z_is_stale)
|
||
|
|
return (0);
|
||
|
|
|
||
|
|
return (1);
|
||
|
|
}
|
||
|
|
|
||
|
|
const struct inode_operations zpl_inode_operations = {
|
||
|
|
.setattr = zpl_setattr,
|
||
|
|
.getattr = zpl_getattr,
|
||
|
|
#ifdef HAVE_GENERIC_SETXATTR
|
||
|
|
.setxattr = generic_setxattr,
|
||
|
|
.getxattr = generic_getxattr,
|
||
|
|
.removexattr = generic_removexattr,
|
||
|
|
#endif
|
||
|
|
.listxattr = zpl_xattr_list,
|
||
|
|
#ifdef HAVE_INODE_TRUNCATE_RANGE
|
||
|
|
.truncate_range = zpl_truncate_range,
|
||
|
|
#endif /* HAVE_INODE_TRUNCATE_RANGE */
|
||
|
|
#ifdef HAVE_INODE_FALLOCATE
|
||
|
|
.fallocate = zpl_fallocate,
|
||
|
|
#endif /* HAVE_INODE_FALLOCATE */
|
||
|
|
#if defined(CONFIG_FS_POSIX_ACL)
|
||
|
|
#if defined(HAVE_SET_ACL)
|
||
|
|
.set_acl = zpl_set_acl,
|
||
|
|
#endif
|
||
|
|
#if defined(HAVE_GET_ACL)
|
||
|
|
.get_acl = zpl_get_acl,
|
||
|
|
#elif defined(HAVE_CHECK_ACL)
|
||
|
|
.check_acl = zpl_check_acl,
|
||
|
|
#elif defined(HAVE_PERMISSION)
|
||
|
|
.permission = zpl_permission,
|
||
|
|
#endif /* HAVE_GET_ACL | HAVE_CHECK_ACL | HAVE_PERMISSION */
|
||
|
|
#endif /* CONFIG_FS_POSIX_ACL */
|
||
|
|
};
|
||
|
|
|
||
|
|
const struct inode_operations zpl_dir_inode_operations = {
|
||
|
|
.create = zpl_create,
|
||
|
|
.lookup = zpl_lookup,
|
||
|
|
.link = zpl_link,
|
||
|
|
.unlink = zpl_unlink,
|
||
|
|
.symlink = zpl_symlink,
|
||
|
|
.mkdir = zpl_mkdir,
|
||
|
|
.rmdir = zpl_rmdir,
|
||
|
|
.mknod = zpl_mknod,
|
||
|
|
#ifdef HAVE_RENAME_WANTS_FLAGS
|
||
|
|
.rename = zpl_rename2,
|
||
|
|
#else
|
||
|
|
.rename = zpl_rename,
|
||
|
|
#endif
|
||
|
|
#ifdef HAVE_TMPFILE
|
||
|
|
.tmpfile = zpl_tmpfile,
|
||
|
|
#endif
|
||
|
|
.setattr = zpl_setattr,
|
||
|
|
.getattr = zpl_getattr,
|
||
|
|
#ifdef HAVE_GENERIC_SETXATTR
|
||
|
|
.setxattr = generic_setxattr,
|
||
|
|
.getxattr = generic_getxattr,
|
||
|
|
.removexattr = generic_removexattr,
|
||
|
|
#endif
|
||
|
|
.listxattr = zpl_xattr_list,
|
||
|
|
#if defined(CONFIG_FS_POSIX_ACL)
|
||
|
|
#if defined(HAVE_SET_ACL)
|
||
|
|
.set_acl = zpl_set_acl,
|
||
|
|
#endif
|
||
|
|
#if defined(HAVE_GET_ACL)
|
||
|
|
.get_acl = zpl_get_acl,
|
||
|
|
#elif defined(HAVE_CHECK_ACL)
|
||
|
|
.check_acl = zpl_check_acl,
|
||
|
|
#elif defined(HAVE_PERMISSION)
|
||
|
|
.permission = zpl_permission,
|
||
|
|
#endif /* HAVE_GET_ACL | HAVE_CHECK_ACL | HAVE_PERMISSION */
|
||
|
|
#endif /* CONFIG_FS_POSIX_ACL */
|
||
|
|
};
|
||
|
|
|
||
|
|
const struct inode_operations zpl_symlink_inode_operations = {
|
||
|
|
#ifdef HAVE_GENERIC_READLINK
|
||
|
|
.readlink = generic_readlink,
|
||
|
|
#endif
|
||
|
|
#if defined(HAVE_GET_LINK_DELAYED) || defined(HAVE_GET_LINK_COOKIE)
|
||
|
|
.get_link = zpl_get_link,
|
||
|
|
#elif defined(HAVE_FOLLOW_LINK_COOKIE) || defined(HAVE_FOLLOW_LINK_NAMEIDATA)
|
||
|
|
.follow_link = zpl_follow_link,
|
||
|
|
#endif
|
||
|
|
#if defined(HAVE_PUT_LINK_COOKIE) || defined(HAVE_PUT_LINK_NAMEIDATA)
|
||
|
|
.put_link = zpl_put_link,
|
||
|
|
#endif
|
||
|
|
.setattr = zpl_setattr,
|
||
|
|
.getattr = zpl_getattr,
|
||
|
|
#ifdef HAVE_GENERIC_SETXATTR
|
||
|
|
.setxattr = generic_setxattr,
|
||
|
|
.getxattr = generic_getxattr,
|
||
|
|
.removexattr = generic_removexattr,
|
||
|
|
#endif
|
||
|
|
.listxattr = zpl_xattr_list,
|
||
|
|
};
|
||
|
|
|
||
|
|
const struct inode_operations zpl_special_inode_operations = {
|
||
|
|
.setattr = zpl_setattr,
|
||
|
|
.getattr = zpl_getattr,
|
||
|
|
#ifdef HAVE_GENERIC_SETXATTR
|
||
|
|
.setxattr = generic_setxattr,
|
||
|
|
.getxattr = generic_getxattr,
|
||
|
|
.removexattr = generic_removexattr,
|
||
|
|
#endif
|
||
|
|
.listxattr = zpl_xattr_list,
|
||
|
|
#if defined(CONFIG_FS_POSIX_ACL)
|
||
|
|
#if defined(HAVE_SET_ACL)
|
||
|
|
.set_acl = zpl_set_acl,
|
||
|
|
#endif
|
||
|
|
#if defined(HAVE_GET_ACL)
|
||
|
|
.get_acl = zpl_get_acl,
|
||
|
|
#elif defined(HAVE_CHECK_ACL)
|
||
|
|
.check_acl = zpl_check_acl,
|
||
|
|
#elif defined(HAVE_PERMISSION)
|
||
|
|
.permission = zpl_permission,
|
||
|
|
#endif /* HAVE_GET_ACL | HAVE_CHECK_ACL | HAVE_PERMISSION */
|
||
|
|
#endif /* CONFIG_FS_POSIX_ACL */
|
||
|
|
};
|
||
|
|
|
||
|
|
dentry_operations_t zpl_dentry_operations = {
|
||
|
|
.d_revalidate = zpl_revalidate,
|
||
|
|
};
|