844fa1b5f8
This fixes a regression in 3.14-rc1 where xfstests generic/307 fails. jfs sets the ctime on the inode when writing an xattr. Previously, jfs went ahead and stored an acl that can be completely represented in the traditional permission bits, so the ctime was always set in the xattr code. The new code doesn't bother storing the acl in that case, thus the ctime isn't getting set. Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com> Reported-by: Michael L. Semon <mlsemon35@gmail.com>
160 lines
3.6 KiB
C
160 lines
3.6 KiB
C
/*
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* Copyright (C) International Business Machines Corp., 2002-2004
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* Copyright (C) Andreas Gruenbacher, 2001
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* Copyright (C) Linus Torvalds, 1991, 1992
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/fs.h>
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#include <linux/posix_acl_xattr.h>
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#include "jfs_incore.h"
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#include "jfs_txnmgr.h"
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#include "jfs_xattr.h"
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#include "jfs_acl.h"
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struct posix_acl *jfs_get_acl(struct inode *inode, int type)
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{
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struct posix_acl *acl;
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char *ea_name;
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int size;
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char *value = NULL;
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acl = get_cached_acl(inode, type);
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if (acl != ACL_NOT_CACHED)
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return acl;
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switch(type) {
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case ACL_TYPE_ACCESS:
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ea_name = POSIX_ACL_XATTR_ACCESS;
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break;
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case ACL_TYPE_DEFAULT:
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ea_name = POSIX_ACL_XATTR_DEFAULT;
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break;
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default:
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return ERR_PTR(-EINVAL);
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}
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size = __jfs_getxattr(inode, ea_name, NULL, 0);
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if (size > 0) {
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value = kmalloc(size, GFP_KERNEL);
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if (!value)
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return ERR_PTR(-ENOMEM);
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size = __jfs_getxattr(inode, ea_name, value, size);
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}
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if (size < 0) {
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if (size == -ENODATA)
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acl = NULL;
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else
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acl = ERR_PTR(size);
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} else {
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acl = posix_acl_from_xattr(&init_user_ns, value, size);
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}
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kfree(value);
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if (!IS_ERR(acl))
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set_cached_acl(inode, type, acl);
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return acl;
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}
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static int __jfs_set_acl(tid_t tid, struct inode *inode, int type,
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struct posix_acl *acl)
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{
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char *ea_name;
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int rc;
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int size = 0;
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char *value = NULL;
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switch (type) {
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case ACL_TYPE_ACCESS:
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ea_name = POSIX_ACL_XATTR_ACCESS;
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rc = posix_acl_equiv_mode(acl, &inode->i_mode);
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if (rc < 0)
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return rc;
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inode->i_ctime = CURRENT_TIME;
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mark_inode_dirty(inode);
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if (rc == 0)
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acl = NULL;
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break;
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case ACL_TYPE_DEFAULT:
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ea_name = POSIX_ACL_XATTR_DEFAULT;
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break;
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default:
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return -EINVAL;
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}
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if (acl) {
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size = posix_acl_xattr_size(acl->a_count);
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value = kmalloc(size, GFP_KERNEL);
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if (!value)
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return -ENOMEM;
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rc = posix_acl_to_xattr(&init_user_ns, acl, value, size);
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if (rc < 0)
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goto out;
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}
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rc = __jfs_setxattr(tid, inode, ea_name, value, size, 0);
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out:
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kfree(value);
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if (!rc)
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set_cached_acl(inode, type, acl);
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return rc;
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}
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int jfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
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{
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int rc;
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tid_t tid;
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tid = txBegin(inode->i_sb, 0);
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mutex_lock(&JFS_IP(inode)->commit_mutex);
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rc = __jfs_set_acl(tid, inode, type, acl);
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if (!rc)
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rc = txCommit(tid, 1, &inode, 0);
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txEnd(tid);
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mutex_unlock(&JFS_IP(inode)->commit_mutex);
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return rc;
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}
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int jfs_init_acl(tid_t tid, struct inode *inode, struct inode *dir)
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{
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struct posix_acl *default_acl, *acl;
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int rc = 0;
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rc = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl);
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if (rc)
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return rc;
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if (default_acl) {
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rc = __jfs_set_acl(tid, inode, ACL_TYPE_DEFAULT, default_acl);
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posix_acl_release(default_acl);
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}
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if (acl) {
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if (!rc)
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rc = __jfs_set_acl(tid, inode, ACL_TYPE_ACCESS, acl);
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posix_acl_release(acl);
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}
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JFS_IP(inode)->mode2 = (JFS_IP(inode)->mode2 & 0xffff0000) |
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inode->i_mode;
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return rc;
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}
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