![Luis R. Rodriguez](/assets/img/avatar_default.png)
statx(2) notes that any attribute that is not indicated as supported by stx_attributes_mask has no usable value. Commit5f955f26f3
("xfs: report crtime and attribute flags to statx") added support for informing userspace of extra file attributes but forgot to list these flags as supported making reporting them rather useless for the pedantic userspace author. $ git describe --contains5f955f26f3
v4.11-rc6~5^2^2~2 Fixes:5f955f26f3
("xfs: report crtime and attribute flags to statx") Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> [darrick: add a comment reminding people to keep attributes_mask up to date] Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
1360 lines
34 KiB
C
1360 lines
34 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_shared.h"
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#include "xfs_format.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_mount.h"
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#include "xfs_da_format.h"
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#include "xfs_inode.h"
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#include "xfs_bmap.h"
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#include "xfs_bmap_util.h"
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#include "xfs_acl.h"
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#include "xfs_quota.h"
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#include "xfs_error.h"
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#include "xfs_attr.h"
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#include "xfs_trans.h"
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#include "xfs_trace.h"
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#include "xfs_icache.h"
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#include "xfs_symlink.h"
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#include "xfs_da_btree.h"
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#include "xfs_dir2.h"
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#include "xfs_trans_space.h"
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#include "xfs_iomap.h"
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#include "xfs_defer.h"
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#include <linux/capability.h>
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#include <linux/xattr.h>
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#include <linux/posix_acl.h>
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#include <linux/security.h>
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#include <linux/iomap.h>
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#include <linux/slab.h>
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#include <linux/iversion.h>
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/*
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* Directories have different lock order w.r.t. mmap_sem compared to regular
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* files. This is due to readdir potentially triggering page faults on a user
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* buffer inside filldir(), and this happens with the ilock on the directory
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* held. For regular files, the lock order is the other way around - the
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* mmap_sem is taken during the page fault, and then we lock the ilock to do
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* block mapping. Hence we need a different class for the directory ilock so
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* that lockdep can tell them apart.
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*/
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static struct lock_class_key xfs_nondir_ilock_class;
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static struct lock_class_key xfs_dir_ilock_class;
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static int
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xfs_initxattrs(
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struct inode *inode,
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const struct xattr *xattr_array,
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void *fs_info)
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{
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const struct xattr *xattr;
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struct xfs_inode *ip = XFS_I(inode);
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int error = 0;
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for (xattr = xattr_array; xattr->name != NULL; xattr++) {
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error = xfs_attr_set(ip, xattr->name, xattr->value,
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xattr->value_len, ATTR_SECURE);
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if (error < 0)
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break;
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}
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return error;
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}
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/*
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* Hook in SELinux. This is not quite correct yet, what we really need
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* here (as we do for default ACLs) is a mechanism by which creation of
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* these attrs can be journalled at inode creation time (along with the
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* inode, of course, such that log replay can't cause these to be lost).
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*/
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STATIC int
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xfs_init_security(
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struct inode *inode,
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struct inode *dir,
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const struct qstr *qstr)
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{
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return security_inode_init_security(inode, dir, qstr,
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&xfs_initxattrs, NULL);
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}
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static void
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xfs_dentry_to_name(
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struct xfs_name *namep,
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struct dentry *dentry)
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{
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namep->name = dentry->d_name.name;
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namep->len = dentry->d_name.len;
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namep->type = XFS_DIR3_FT_UNKNOWN;
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}
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static int
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xfs_dentry_mode_to_name(
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struct xfs_name *namep,
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struct dentry *dentry,
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int mode)
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{
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namep->name = dentry->d_name.name;
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namep->len = dentry->d_name.len;
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namep->type = xfs_mode_to_ftype(mode);
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if (unlikely(namep->type == XFS_DIR3_FT_UNKNOWN))
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return -EFSCORRUPTED;
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return 0;
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}
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STATIC void
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xfs_cleanup_inode(
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struct inode *dir,
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struct inode *inode,
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struct dentry *dentry)
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{
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struct xfs_name teardown;
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/* Oh, the horror.
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* If we can't add the ACL or we fail in
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* xfs_init_security we must back out.
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* ENOSPC can hit here, among other things.
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*/
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xfs_dentry_to_name(&teardown, dentry);
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xfs_remove(XFS_I(dir), &teardown, XFS_I(inode));
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}
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STATIC int
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xfs_generic_create(
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struct inode *dir,
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struct dentry *dentry,
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umode_t mode,
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dev_t rdev,
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bool tmpfile) /* unnamed file */
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{
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struct inode *inode;
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struct xfs_inode *ip = NULL;
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struct posix_acl *default_acl, *acl;
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struct xfs_name name;
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int error;
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/*
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* Irix uses Missed'em'V split, but doesn't want to see
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* the upper 5 bits of (14bit) major.
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*/
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if (S_ISCHR(mode) || S_ISBLK(mode)) {
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if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff))
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return -EINVAL;
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} else {
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rdev = 0;
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}
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error = posix_acl_create(dir, &mode, &default_acl, &acl);
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if (error)
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return error;
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/* Verify mode is valid also for tmpfile case */
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error = xfs_dentry_mode_to_name(&name, dentry, mode);
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if (unlikely(error))
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goto out_free_acl;
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if (!tmpfile) {
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error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip);
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} else {
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error = xfs_create_tmpfile(XFS_I(dir), mode, &ip);
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}
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if (unlikely(error))
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goto out_free_acl;
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inode = VFS_I(ip);
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error = xfs_init_security(inode, dir, &dentry->d_name);
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if (unlikely(error))
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goto out_cleanup_inode;
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#ifdef CONFIG_XFS_POSIX_ACL
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if (default_acl) {
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error = __xfs_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
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if (error)
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goto out_cleanup_inode;
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}
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if (acl) {
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error = __xfs_set_acl(inode, acl, ACL_TYPE_ACCESS);
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if (error)
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goto out_cleanup_inode;
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}
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#endif
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xfs_setup_iops(ip);
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if (tmpfile) {
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/*
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* The VFS requires that any inode fed to d_tmpfile must have
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* nlink == 1 so that it can decrement the nlink in d_tmpfile.
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* However, we created the temp file with nlink == 0 because
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* we're not allowed to put an inode with nlink > 0 on the
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* unlinked list. Therefore we have to set nlink to 1 so that
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* d_tmpfile can immediately set it back to zero.
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*/
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set_nlink(inode, 1);
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d_tmpfile(dentry, inode);
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} else
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d_instantiate(dentry, inode);
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xfs_finish_inode_setup(ip);
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out_free_acl:
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if (default_acl)
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posix_acl_release(default_acl);
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if (acl)
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posix_acl_release(acl);
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return error;
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out_cleanup_inode:
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xfs_finish_inode_setup(ip);
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if (!tmpfile)
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xfs_cleanup_inode(dir, inode, dentry);
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xfs_irele(ip);
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goto out_free_acl;
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}
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STATIC int
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xfs_vn_mknod(
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struct inode *dir,
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struct dentry *dentry,
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umode_t mode,
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dev_t rdev)
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{
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return xfs_generic_create(dir, dentry, mode, rdev, false);
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}
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STATIC int
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xfs_vn_create(
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struct inode *dir,
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struct dentry *dentry,
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umode_t mode,
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bool flags)
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{
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return xfs_vn_mknod(dir, dentry, mode, 0);
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}
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STATIC int
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xfs_vn_mkdir(
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struct inode *dir,
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struct dentry *dentry,
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umode_t mode)
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{
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return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0);
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}
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STATIC struct dentry *
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xfs_vn_lookup(
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struct inode *dir,
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struct dentry *dentry,
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unsigned int flags)
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{
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struct inode *inode;
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struct xfs_inode *cip;
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struct xfs_name name;
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int error;
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if (dentry->d_name.len >= MAXNAMELEN)
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return ERR_PTR(-ENAMETOOLONG);
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xfs_dentry_to_name(&name, dentry);
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error = xfs_lookup(XFS_I(dir), &name, &cip, NULL);
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if (likely(!error))
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inode = VFS_I(cip);
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else if (likely(error == -ENOENT))
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inode = NULL;
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else
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inode = ERR_PTR(error);
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return d_splice_alias(inode, dentry);
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}
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STATIC struct dentry *
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xfs_vn_ci_lookup(
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struct inode *dir,
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struct dentry *dentry,
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unsigned int flags)
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{
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struct xfs_inode *ip;
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struct xfs_name xname;
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struct xfs_name ci_name;
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struct qstr dname;
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int error;
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if (dentry->d_name.len >= MAXNAMELEN)
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return ERR_PTR(-ENAMETOOLONG);
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xfs_dentry_to_name(&xname, dentry);
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error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name);
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if (unlikely(error)) {
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if (unlikely(error != -ENOENT))
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return ERR_PTR(error);
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/*
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* call d_add(dentry, NULL) here when d_drop_negative_children
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* is called in xfs_vn_mknod (ie. allow negative dentries
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* with CI filesystems).
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*/
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return NULL;
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}
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/* if exact match, just splice and exit */
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if (!ci_name.name)
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return d_splice_alias(VFS_I(ip), dentry);
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/* else case-insensitive match... */
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dname.name = ci_name.name;
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dname.len = ci_name.len;
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dentry = d_add_ci(dentry, VFS_I(ip), &dname);
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kmem_free(ci_name.name);
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return dentry;
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}
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STATIC int
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xfs_vn_link(
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struct dentry *old_dentry,
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struct inode *dir,
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struct dentry *dentry)
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{
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struct inode *inode = d_inode(old_dentry);
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struct xfs_name name;
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int error;
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error = xfs_dentry_mode_to_name(&name, dentry, inode->i_mode);
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if (unlikely(error))
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return error;
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error = xfs_link(XFS_I(dir), XFS_I(inode), &name);
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if (unlikely(error))
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return error;
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ihold(inode);
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d_instantiate(dentry, inode);
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return 0;
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}
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STATIC int
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xfs_vn_unlink(
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struct inode *dir,
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struct dentry *dentry)
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{
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struct xfs_name name;
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int error;
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xfs_dentry_to_name(&name, dentry);
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error = xfs_remove(XFS_I(dir), &name, XFS_I(d_inode(dentry)));
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if (error)
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return error;
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/*
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* With unlink, the VFS makes the dentry "negative": no inode,
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* but still hashed. This is incompatible with case-insensitive
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* mode, so invalidate (unhash) the dentry in CI-mode.
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*/
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if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb))
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d_invalidate(dentry);
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return 0;
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}
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STATIC int
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xfs_vn_symlink(
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struct inode *dir,
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struct dentry *dentry,
|
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const char *symname)
|
|
{
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struct inode *inode;
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struct xfs_inode *cip = NULL;
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struct xfs_name name;
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int error;
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umode_t mode;
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mode = S_IFLNK |
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(irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO);
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error = xfs_dentry_mode_to_name(&name, dentry, mode);
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if (unlikely(error))
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goto out;
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error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip);
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if (unlikely(error))
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goto out;
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inode = VFS_I(cip);
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error = xfs_init_security(inode, dir, &dentry->d_name);
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if (unlikely(error))
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goto out_cleanup_inode;
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xfs_setup_iops(cip);
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d_instantiate(dentry, inode);
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xfs_finish_inode_setup(cip);
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return 0;
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out_cleanup_inode:
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xfs_finish_inode_setup(cip);
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xfs_cleanup_inode(dir, inode, dentry);
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xfs_irele(cip);
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out:
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return error;
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}
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|
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STATIC int
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xfs_vn_rename(
|
|
struct inode *odir,
|
|
struct dentry *odentry,
|
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struct inode *ndir,
|
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struct dentry *ndentry,
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unsigned int flags)
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{
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struct inode *new_inode = d_inode(ndentry);
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int omode = 0;
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int error;
|
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struct xfs_name oname;
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struct xfs_name nname;
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|
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if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
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return -EINVAL;
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|
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/* if we are exchanging files, we need to set i_mode of both files */
|
|
if (flags & RENAME_EXCHANGE)
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omode = d_inode(ndentry)->i_mode;
|
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|
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error = xfs_dentry_mode_to_name(&oname, odentry, omode);
|
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if (omode && unlikely(error))
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return error;
|
|
|
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error = xfs_dentry_mode_to_name(&nname, ndentry,
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d_inode(odentry)->i_mode);
|
|
if (unlikely(error))
|
|
return error;
|
|
|
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return xfs_rename(XFS_I(odir), &oname, XFS_I(d_inode(odentry)),
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|
XFS_I(ndir), &nname,
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new_inode ? XFS_I(new_inode) : NULL, flags);
|
|
}
|
|
|
|
/*
|
|
* careful here - this function can get called recursively, so
|
|
* we need to be very careful about how much stack we use.
|
|
* uio is kmalloced for this reason...
|
|
*/
|
|
STATIC const char *
|
|
xfs_vn_get_link(
|
|
struct dentry *dentry,
|
|
struct inode *inode,
|
|
struct delayed_call *done)
|
|
{
|
|
char *link;
|
|
int error = -ENOMEM;
|
|
|
|
if (!dentry)
|
|
return ERR_PTR(-ECHILD);
|
|
|
|
link = kmalloc(XFS_SYMLINK_MAXLEN+1, GFP_KERNEL);
|
|
if (!link)
|
|
goto out_err;
|
|
|
|
error = xfs_readlink(XFS_I(d_inode(dentry)), link);
|
|
if (unlikely(error))
|
|
goto out_kfree;
|
|
|
|
set_delayed_call(done, kfree_link, link);
|
|
return link;
|
|
|
|
out_kfree:
|
|
kfree(link);
|
|
out_err:
|
|
return ERR_PTR(error);
|
|
}
|
|
|
|
STATIC const char *
|
|
xfs_vn_get_link_inline(
|
|
struct dentry *dentry,
|
|
struct inode *inode,
|
|
struct delayed_call *done)
|
|
{
|
|
char *link;
|
|
|
|
ASSERT(XFS_I(inode)->i_df.if_flags & XFS_IFINLINE);
|
|
|
|
/*
|
|
* The VFS crashes on a NULL pointer, so return -EFSCORRUPTED if
|
|
* if_data is junk.
|
|
*/
|
|
link = XFS_I(inode)->i_df.if_u1.if_data;
|
|
if (!link)
|
|
return ERR_PTR(-EFSCORRUPTED);
|
|
return link;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_vn_getattr(
|
|
const struct path *path,
|
|
struct kstat *stat,
|
|
u32 request_mask,
|
|
unsigned int query_flags)
|
|
{
|
|
struct inode *inode = d_inode(path->dentry);
|
|
struct xfs_inode *ip = XFS_I(inode);
|
|
struct xfs_mount *mp = ip->i_mount;
|
|
|
|
trace_xfs_getattr(ip);
|
|
|
|
if (XFS_FORCED_SHUTDOWN(mp))
|
|
return -EIO;
|
|
|
|
stat->size = XFS_ISIZE(ip);
|
|
stat->dev = inode->i_sb->s_dev;
|
|
stat->mode = inode->i_mode;
|
|
stat->nlink = inode->i_nlink;
|
|
stat->uid = inode->i_uid;
|
|
stat->gid = inode->i_gid;
|
|
stat->ino = ip->i_ino;
|
|
stat->atime = inode->i_atime;
|
|
stat->mtime = inode->i_mtime;
|
|
stat->ctime = inode->i_ctime;
|
|
stat->blocks =
|
|
XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
|
|
|
|
if (ip->i_d.di_version == 3) {
|
|
if (request_mask & STATX_BTIME) {
|
|
stat->result_mask |= STATX_BTIME;
|
|
stat->btime.tv_sec = ip->i_d.di_crtime.t_sec;
|
|
stat->btime.tv_nsec = ip->i_d.di_crtime.t_nsec;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Note: If you add another clause to set an attribute flag, please
|
|
* update attributes_mask below.
|
|
*/
|
|
if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
|
|
stat->attributes |= STATX_ATTR_IMMUTABLE;
|
|
if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
|
|
stat->attributes |= STATX_ATTR_APPEND;
|
|
if (ip->i_d.di_flags & XFS_DIFLAG_NODUMP)
|
|
stat->attributes |= STATX_ATTR_NODUMP;
|
|
|
|
stat->attributes_mask |= (STATX_ATTR_IMMUTABLE |
|
|
STATX_ATTR_APPEND |
|
|
STATX_ATTR_NODUMP);
|
|
|
|
switch (inode->i_mode & S_IFMT) {
|
|
case S_IFBLK:
|
|
case S_IFCHR:
|
|
stat->blksize = BLKDEV_IOSIZE;
|
|
stat->rdev = inode->i_rdev;
|
|
break;
|
|
default:
|
|
if (XFS_IS_REALTIME_INODE(ip)) {
|
|
/*
|
|
* If the file blocks are being allocated from a
|
|
* realtime volume, then return the inode's realtime
|
|
* extent size or the realtime volume's extent size.
|
|
*/
|
|
stat->blksize =
|
|
xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog;
|
|
} else
|
|
stat->blksize = xfs_preferred_iosize(mp);
|
|
stat->rdev = 0;
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
xfs_setattr_mode(
|
|
struct xfs_inode *ip,
|
|
struct iattr *iattr)
|
|
{
|
|
struct inode *inode = VFS_I(ip);
|
|
umode_t mode = iattr->ia_mode;
|
|
|
|
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
|
|
|
|
inode->i_mode &= S_IFMT;
|
|
inode->i_mode |= mode & ~S_IFMT;
|
|
}
|
|
|
|
void
|
|
xfs_setattr_time(
|
|
struct xfs_inode *ip,
|
|
struct iattr *iattr)
|
|
{
|
|
struct inode *inode = VFS_I(ip);
|
|
|
|
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
|
|
|
|
if (iattr->ia_valid & ATTR_ATIME)
|
|
inode->i_atime = iattr->ia_atime;
|
|
if (iattr->ia_valid & ATTR_CTIME)
|
|
inode->i_ctime = iattr->ia_ctime;
|
|
if (iattr->ia_valid & ATTR_MTIME)
|
|
inode->i_mtime = iattr->ia_mtime;
|
|
}
|
|
|
|
static int
|
|
xfs_vn_change_ok(
|
|
struct dentry *dentry,
|
|
struct iattr *iattr)
|
|
{
|
|
struct xfs_mount *mp = XFS_I(d_inode(dentry))->i_mount;
|
|
|
|
if (mp->m_flags & XFS_MOUNT_RDONLY)
|
|
return -EROFS;
|
|
|
|
if (XFS_FORCED_SHUTDOWN(mp))
|
|
return -EIO;
|
|
|
|
return setattr_prepare(dentry, iattr);
|
|
}
|
|
|
|
/*
|
|
* Set non-size attributes of an inode.
|
|
*
|
|
* Caution: The caller of this function is responsible for calling
|
|
* setattr_prepare() or otherwise verifying the change is fine.
|
|
*/
|
|
int
|
|
xfs_setattr_nonsize(
|
|
struct xfs_inode *ip,
|
|
struct iattr *iattr,
|
|
int flags)
|
|
{
|
|
xfs_mount_t *mp = ip->i_mount;
|
|
struct inode *inode = VFS_I(ip);
|
|
int mask = iattr->ia_valid;
|
|
xfs_trans_t *tp;
|
|
int error;
|
|
kuid_t uid = GLOBAL_ROOT_UID, iuid = GLOBAL_ROOT_UID;
|
|
kgid_t gid = GLOBAL_ROOT_GID, igid = GLOBAL_ROOT_GID;
|
|
struct xfs_dquot *udqp = NULL, *gdqp = NULL;
|
|
struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL;
|
|
|
|
ASSERT((mask & ATTR_SIZE) == 0);
|
|
|
|
/*
|
|
* If disk quotas is on, we make sure that the dquots do exist on disk,
|
|
* before we start any other transactions. Trying to do this later
|
|
* is messy. We don't care to take a readlock to look at the ids
|
|
* in inode here, because we can't hold it across the trans_reserve.
|
|
* If the IDs do change before we take the ilock, we're covered
|
|
* because the i_*dquot fields will get updated anyway.
|
|
*/
|
|
if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) {
|
|
uint qflags = 0;
|
|
|
|
if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) {
|
|
uid = iattr->ia_uid;
|
|
qflags |= XFS_QMOPT_UQUOTA;
|
|
} else {
|
|
uid = inode->i_uid;
|
|
}
|
|
if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) {
|
|
gid = iattr->ia_gid;
|
|
qflags |= XFS_QMOPT_GQUOTA;
|
|
} else {
|
|
gid = inode->i_gid;
|
|
}
|
|
|
|
/*
|
|
* We take a reference when we initialize udqp and gdqp,
|
|
* so it is important that we never blindly double trip on
|
|
* the same variable. See xfs_create() for an example.
|
|
*/
|
|
ASSERT(udqp == NULL);
|
|
ASSERT(gdqp == NULL);
|
|
error = xfs_qm_vop_dqalloc(ip, xfs_kuid_to_uid(uid),
|
|
xfs_kgid_to_gid(gid),
|
|
xfs_get_projid(ip),
|
|
qflags, &udqp, &gdqp, NULL);
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
|
|
if (error)
|
|
goto out_dqrele;
|
|
|
|
xfs_ilock(ip, XFS_ILOCK_EXCL);
|
|
xfs_trans_ijoin(tp, ip, 0);
|
|
|
|
/*
|
|
* Change file ownership. Must be the owner or privileged.
|
|
*/
|
|
if (mask & (ATTR_UID|ATTR_GID)) {
|
|
/*
|
|
* These IDs could have changed since we last looked at them.
|
|
* But, we're assured that if the ownership did change
|
|
* while we didn't have the inode locked, inode's dquot(s)
|
|
* would have changed also.
|
|
*/
|
|
iuid = inode->i_uid;
|
|
igid = inode->i_gid;
|
|
gid = (mask & ATTR_GID) ? iattr->ia_gid : igid;
|
|
uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid;
|
|
|
|
/*
|
|
* Do a quota reservation only if uid/gid is actually
|
|
* going to change.
|
|
*/
|
|
if (XFS_IS_QUOTA_RUNNING(mp) &&
|
|
((XFS_IS_UQUOTA_ON(mp) && !uid_eq(iuid, uid)) ||
|
|
(XFS_IS_GQUOTA_ON(mp) && !gid_eq(igid, gid)))) {
|
|
ASSERT(tp);
|
|
error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp,
|
|
NULL, capable(CAP_FOWNER) ?
|
|
XFS_QMOPT_FORCE_RES : 0);
|
|
if (error) /* out of quota */
|
|
goto out_cancel;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Change file ownership. Must be the owner or privileged.
|
|
*/
|
|
if (mask & (ATTR_UID|ATTR_GID)) {
|
|
/*
|
|
* CAP_FSETID overrides the following restrictions:
|
|
*
|
|
* The set-user-ID and set-group-ID bits of a file will be
|
|
* cleared upon successful return from chown()
|
|
*/
|
|
if ((inode->i_mode & (S_ISUID|S_ISGID)) &&
|
|
!capable(CAP_FSETID))
|
|
inode->i_mode &= ~(S_ISUID|S_ISGID);
|
|
|
|
/*
|
|
* Change the ownerships and register quota modifications
|
|
* in the transaction.
|
|
*/
|
|
if (!uid_eq(iuid, uid)) {
|
|
if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) {
|
|
ASSERT(mask & ATTR_UID);
|
|
ASSERT(udqp);
|
|
olddquot1 = xfs_qm_vop_chown(tp, ip,
|
|
&ip->i_udquot, udqp);
|
|
}
|
|
ip->i_d.di_uid = xfs_kuid_to_uid(uid);
|
|
inode->i_uid = uid;
|
|
}
|
|
if (!gid_eq(igid, gid)) {
|
|
if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) {
|
|
ASSERT(xfs_sb_version_has_pquotino(&mp->m_sb) ||
|
|
!XFS_IS_PQUOTA_ON(mp));
|
|
ASSERT(mask & ATTR_GID);
|
|
ASSERT(gdqp);
|
|
olddquot2 = xfs_qm_vop_chown(tp, ip,
|
|
&ip->i_gdquot, gdqp);
|
|
}
|
|
ip->i_d.di_gid = xfs_kgid_to_gid(gid);
|
|
inode->i_gid = gid;
|
|
}
|
|
}
|
|
|
|
if (mask & ATTR_MODE)
|
|
xfs_setattr_mode(ip, iattr);
|
|
if (mask & (ATTR_ATIME|ATTR_CTIME|ATTR_MTIME))
|
|
xfs_setattr_time(ip, iattr);
|
|
|
|
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
|
|
|
|
XFS_STATS_INC(mp, xs_ig_attrchg);
|
|
|
|
if (mp->m_flags & XFS_MOUNT_WSYNC)
|
|
xfs_trans_set_sync(tp);
|
|
error = xfs_trans_commit(tp);
|
|
|
|
xfs_iunlock(ip, XFS_ILOCK_EXCL);
|
|
|
|
/*
|
|
* Release any dquot(s) the inode had kept before chown.
|
|
*/
|
|
xfs_qm_dqrele(olddquot1);
|
|
xfs_qm_dqrele(olddquot2);
|
|
xfs_qm_dqrele(udqp);
|
|
xfs_qm_dqrele(gdqp);
|
|
|
|
if (error)
|
|
return error;
|
|
|
|
/*
|
|
* XXX(hch): Updating the ACL entries is not atomic vs the i_mode
|
|
* update. We could avoid this with linked transactions
|
|
* and passing down the transaction pointer all the way
|
|
* to attr_set. No previous user of the generic
|
|
* Posix ACL code seems to care about this issue either.
|
|
*/
|
|
if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) {
|
|
error = posix_acl_chmod(inode, inode->i_mode);
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_cancel:
|
|
xfs_trans_cancel(tp);
|
|
out_dqrele:
|
|
xfs_qm_dqrele(udqp);
|
|
xfs_qm_dqrele(gdqp);
|
|
return error;
|
|
}
|
|
|
|
int
|
|
xfs_vn_setattr_nonsize(
|
|
struct dentry *dentry,
|
|
struct iattr *iattr)
|
|
{
|
|
struct xfs_inode *ip = XFS_I(d_inode(dentry));
|
|
int error;
|
|
|
|
trace_xfs_setattr(ip);
|
|
|
|
error = xfs_vn_change_ok(dentry, iattr);
|
|
if (error)
|
|
return error;
|
|
return xfs_setattr_nonsize(ip, iattr, 0);
|
|
}
|
|
|
|
/*
|
|
* Truncate file. Must have write permission and not be a directory.
|
|
*
|
|
* Caution: The caller of this function is responsible for calling
|
|
* setattr_prepare() or otherwise verifying the change is fine.
|
|
*/
|
|
STATIC int
|
|
xfs_setattr_size(
|
|
struct xfs_inode *ip,
|
|
struct iattr *iattr)
|
|
{
|
|
struct xfs_mount *mp = ip->i_mount;
|
|
struct inode *inode = VFS_I(ip);
|
|
xfs_off_t oldsize, newsize;
|
|
struct xfs_trans *tp;
|
|
int error;
|
|
uint lock_flags = 0;
|
|
bool did_zeroing = false;
|
|
|
|
ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
|
|
ASSERT(xfs_isilocked(ip, XFS_MMAPLOCK_EXCL));
|
|
ASSERT(S_ISREG(inode->i_mode));
|
|
ASSERT((iattr->ia_valid & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET|
|
|
ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0);
|
|
|
|
oldsize = inode->i_size;
|
|
newsize = iattr->ia_size;
|
|
|
|
/*
|
|
* Short circuit the truncate case for zero length files.
|
|
*/
|
|
if (newsize == 0 && oldsize == 0 && ip->i_d.di_nextents == 0) {
|
|
if (!(iattr->ia_valid & (ATTR_CTIME|ATTR_MTIME)))
|
|
return 0;
|
|
|
|
/*
|
|
* Use the regular setattr path to update the timestamps.
|
|
*/
|
|
iattr->ia_valid &= ~ATTR_SIZE;
|
|
return xfs_setattr_nonsize(ip, iattr, 0);
|
|
}
|
|
|
|
/*
|
|
* Make sure that the dquots are attached to the inode.
|
|
*/
|
|
error = xfs_qm_dqattach(ip);
|
|
if (error)
|
|
return error;
|
|
|
|
/*
|
|
* Wait for all direct I/O to complete.
|
|
*/
|
|
inode_dio_wait(inode);
|
|
|
|
/*
|
|
* File data changes must be complete before we start the transaction to
|
|
* modify the inode. This needs to be done before joining the inode to
|
|
* the transaction because the inode cannot be unlocked once it is a
|
|
* part of the transaction.
|
|
*
|
|
* Start with zeroing any data beyond EOF that we may expose on file
|
|
* extension, or zeroing out the rest of the block on a downward
|
|
* truncate.
|
|
*/
|
|
if (newsize > oldsize) {
|
|
trace_xfs_zero_eof(ip, oldsize, newsize - oldsize);
|
|
error = iomap_zero_range(inode, oldsize, newsize - oldsize,
|
|
&did_zeroing, &xfs_iomap_ops);
|
|
} else {
|
|
error = iomap_truncate_page(inode, newsize, &did_zeroing,
|
|
&xfs_iomap_ops);
|
|
}
|
|
|
|
if (error)
|
|
return error;
|
|
|
|
/*
|
|
* We've already locked out new page faults, so now we can safely remove
|
|
* pages from the page cache knowing they won't get refaulted until we
|
|
* drop the XFS_MMAP_EXCL lock after the extent manipulations are
|
|
* complete. The truncate_setsize() call also cleans partial EOF page
|
|
* PTEs on extending truncates and hence ensures sub-page block size
|
|
* filesystems are correctly handled, too.
|
|
*
|
|
* We have to do all the page cache truncate work outside the
|
|
* transaction context as the "lock" order is page lock->log space
|
|
* reservation as defined by extent allocation in the writeback path.
|
|
* Hence a truncate can fail with ENOMEM from xfs_trans_alloc(), but
|
|
* having already truncated the in-memory version of the file (i.e. made
|
|
* user visible changes). There's not much we can do about this, except
|
|
* to hope that the caller sees ENOMEM and retries the truncate
|
|
* operation.
|
|
*
|
|
* And we update in-core i_size and truncate page cache beyond newsize
|
|
* before writeback the [di_size, newsize] range, so we're guaranteed
|
|
* not to write stale data past the new EOF on truncate down.
|
|
*/
|
|
truncate_setsize(inode, newsize);
|
|
|
|
/*
|
|
* We are going to log the inode size change in this transaction so
|
|
* any previous writes that are beyond the on disk EOF and the new
|
|
* EOF that have not been written out need to be written here. If we
|
|
* do not write the data out, we expose ourselves to the null files
|
|
* problem. Note that this includes any block zeroing we did above;
|
|
* otherwise those blocks may not be zeroed after a crash.
|
|
*/
|
|
if (did_zeroing ||
|
|
(newsize > ip->i_d.di_size && oldsize != ip->i_d.di_size)) {
|
|
error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
|
|
ip->i_d.di_size, newsize - 1);
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, 0, 0, 0, &tp);
|
|
if (error)
|
|
return error;
|
|
|
|
lock_flags |= XFS_ILOCK_EXCL;
|
|
xfs_ilock(ip, XFS_ILOCK_EXCL);
|
|
xfs_trans_ijoin(tp, ip, 0);
|
|
|
|
/*
|
|
* Only change the c/mtime if we are changing the size or we are
|
|
* explicitly asked to change it. This handles the semantic difference
|
|
* between truncate() and ftruncate() as implemented in the VFS.
|
|
*
|
|
* The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a
|
|
* special case where we need to update the times despite not having
|
|
* these flags set. For all other operations the VFS set these flags
|
|
* explicitly if it wants a timestamp update.
|
|
*/
|
|
if (newsize != oldsize &&
|
|
!(iattr->ia_valid & (ATTR_CTIME | ATTR_MTIME))) {
|
|
iattr->ia_ctime = iattr->ia_mtime =
|
|
current_time(inode);
|
|
iattr->ia_valid |= ATTR_CTIME | ATTR_MTIME;
|
|
}
|
|
|
|
/*
|
|
* The first thing we do is set the size to new_size permanently on
|
|
* disk. This way we don't have to worry about anyone ever being able
|
|
* to look at the data being freed even in the face of a crash.
|
|
* What we're getting around here is the case where we free a block, it
|
|
* is allocated to another file, it is written to, and then we crash.
|
|
* If the new data gets written to the file but the log buffers
|
|
* containing the free and reallocation don't, then we'd end up with
|
|
* garbage in the blocks being freed. As long as we make the new size
|
|
* permanent before actually freeing any blocks it doesn't matter if
|
|
* they get written to.
|
|
*/
|
|
ip->i_d.di_size = newsize;
|
|
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
|
|
|
|
if (newsize <= oldsize) {
|
|
error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, newsize);
|
|
if (error)
|
|
goto out_trans_cancel;
|
|
|
|
/*
|
|
* Truncated "down", so we're removing references to old data
|
|
* here - if we delay flushing for a long time, we expose
|
|
* ourselves unduly to the notorious NULL files problem. So,
|
|
* we mark this inode and flush it when the file is closed,
|
|
* and do not wait the usual (long) time for writeout.
|
|
*/
|
|
xfs_iflags_set(ip, XFS_ITRUNCATED);
|
|
|
|
/* A truncate down always removes post-EOF blocks. */
|
|
xfs_inode_clear_eofblocks_tag(ip);
|
|
}
|
|
|
|
if (iattr->ia_valid & ATTR_MODE)
|
|
xfs_setattr_mode(ip, iattr);
|
|
if (iattr->ia_valid & (ATTR_ATIME|ATTR_CTIME|ATTR_MTIME))
|
|
xfs_setattr_time(ip, iattr);
|
|
|
|
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
|
|
|
|
XFS_STATS_INC(mp, xs_ig_attrchg);
|
|
|
|
if (mp->m_flags & XFS_MOUNT_WSYNC)
|
|
xfs_trans_set_sync(tp);
|
|
|
|
error = xfs_trans_commit(tp);
|
|
out_unlock:
|
|
if (lock_flags)
|
|
xfs_iunlock(ip, lock_flags);
|
|
return error;
|
|
|
|
out_trans_cancel:
|
|
xfs_trans_cancel(tp);
|
|
goto out_unlock;
|
|
}
|
|
|
|
int
|
|
xfs_vn_setattr_size(
|
|
struct dentry *dentry,
|
|
struct iattr *iattr)
|
|
{
|
|
struct xfs_inode *ip = XFS_I(d_inode(dentry));
|
|
int error;
|
|
|
|
trace_xfs_setattr(ip);
|
|
|
|
error = xfs_vn_change_ok(dentry, iattr);
|
|
if (error)
|
|
return error;
|
|
return xfs_setattr_size(ip, iattr);
|
|
}
|
|
|
|
STATIC int
|
|
xfs_vn_setattr(
|
|
struct dentry *dentry,
|
|
struct iattr *iattr)
|
|
{
|
|
int error;
|
|
|
|
if (iattr->ia_valid & ATTR_SIZE) {
|
|
struct inode *inode = d_inode(dentry);
|
|
struct xfs_inode *ip = XFS_I(inode);
|
|
uint iolock;
|
|
|
|
xfs_ilock(ip, XFS_MMAPLOCK_EXCL);
|
|
iolock = XFS_IOLOCK_EXCL | XFS_MMAPLOCK_EXCL;
|
|
|
|
error = xfs_break_layouts(inode, &iolock, BREAK_UNMAP);
|
|
if (error) {
|
|
xfs_iunlock(ip, XFS_MMAPLOCK_EXCL);
|
|
return error;
|
|
}
|
|
|
|
error = xfs_vn_setattr_size(dentry, iattr);
|
|
xfs_iunlock(ip, XFS_MMAPLOCK_EXCL);
|
|
} else {
|
|
error = xfs_vn_setattr_nonsize(dentry, iattr);
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_vn_update_time(
|
|
struct inode *inode,
|
|
struct timespec64 *now,
|
|
int flags)
|
|
{
|
|
struct xfs_inode *ip = XFS_I(inode);
|
|
struct xfs_mount *mp = ip->i_mount;
|
|
int log_flags = XFS_ILOG_TIMESTAMP;
|
|
struct xfs_trans *tp;
|
|
int error;
|
|
|
|
trace_xfs_update_time(ip);
|
|
|
|
if (inode->i_sb->s_flags & SB_LAZYTIME) {
|
|
if (!((flags & S_VERSION) &&
|
|
inode_maybe_inc_iversion(inode, false)))
|
|
return generic_update_time(inode, now, flags);
|
|
|
|
/* Capture the iversion update that just occurred */
|
|
log_flags |= XFS_ILOG_CORE;
|
|
}
|
|
|
|
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_fsyncts, 0, 0, 0, &tp);
|
|
if (error)
|
|
return error;
|
|
|
|
xfs_ilock(ip, XFS_ILOCK_EXCL);
|
|
if (flags & S_CTIME)
|
|
inode->i_ctime = *now;
|
|
if (flags & S_MTIME)
|
|
inode->i_mtime = *now;
|
|
if (flags & S_ATIME)
|
|
inode->i_atime = *now;
|
|
|
|
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
|
|
xfs_trans_log_inode(tp, ip, log_flags);
|
|
return xfs_trans_commit(tp);
|
|
}
|
|
|
|
STATIC int
|
|
xfs_vn_fiemap(
|
|
struct inode *inode,
|
|
struct fiemap_extent_info *fieinfo,
|
|
u64 start,
|
|
u64 length)
|
|
{
|
|
int error;
|
|
|
|
xfs_ilock(XFS_I(inode), XFS_IOLOCK_SHARED);
|
|
if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) {
|
|
fieinfo->fi_flags &= ~FIEMAP_FLAG_XATTR;
|
|
error = iomap_fiemap(inode, fieinfo, start, length,
|
|
&xfs_xattr_iomap_ops);
|
|
} else {
|
|
error = iomap_fiemap(inode, fieinfo, start, length,
|
|
&xfs_iomap_ops);
|
|
}
|
|
xfs_iunlock(XFS_I(inode), XFS_IOLOCK_SHARED);
|
|
|
|
return error;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_vn_tmpfile(
|
|
struct inode *dir,
|
|
struct dentry *dentry,
|
|
umode_t mode)
|
|
{
|
|
return xfs_generic_create(dir, dentry, mode, 0, true);
|
|
}
|
|
|
|
static const struct inode_operations xfs_inode_operations = {
|
|
.get_acl = xfs_get_acl,
|
|
.set_acl = xfs_set_acl,
|
|
.getattr = xfs_vn_getattr,
|
|
.setattr = xfs_vn_setattr,
|
|
.listxattr = xfs_vn_listxattr,
|
|
.fiemap = xfs_vn_fiemap,
|
|
.update_time = xfs_vn_update_time,
|
|
};
|
|
|
|
static const struct inode_operations xfs_dir_inode_operations = {
|
|
.create = xfs_vn_create,
|
|
.lookup = xfs_vn_lookup,
|
|
.link = xfs_vn_link,
|
|
.unlink = xfs_vn_unlink,
|
|
.symlink = xfs_vn_symlink,
|
|
.mkdir = xfs_vn_mkdir,
|
|
/*
|
|
* Yes, XFS uses the same method for rmdir and unlink.
|
|
*
|
|
* There are some subtile differences deeper in the code,
|
|
* but we use S_ISDIR to check for those.
|
|
*/
|
|
.rmdir = xfs_vn_unlink,
|
|
.mknod = xfs_vn_mknod,
|
|
.rename = xfs_vn_rename,
|
|
.get_acl = xfs_get_acl,
|
|
.set_acl = xfs_set_acl,
|
|
.getattr = xfs_vn_getattr,
|
|
.setattr = xfs_vn_setattr,
|
|
.listxattr = xfs_vn_listxattr,
|
|
.update_time = xfs_vn_update_time,
|
|
.tmpfile = xfs_vn_tmpfile,
|
|
};
|
|
|
|
static const struct inode_operations xfs_dir_ci_inode_operations = {
|
|
.create = xfs_vn_create,
|
|
.lookup = xfs_vn_ci_lookup,
|
|
.link = xfs_vn_link,
|
|
.unlink = xfs_vn_unlink,
|
|
.symlink = xfs_vn_symlink,
|
|
.mkdir = xfs_vn_mkdir,
|
|
/*
|
|
* Yes, XFS uses the same method for rmdir and unlink.
|
|
*
|
|
* There are some subtile differences deeper in the code,
|
|
* but we use S_ISDIR to check for those.
|
|
*/
|
|
.rmdir = xfs_vn_unlink,
|
|
.mknod = xfs_vn_mknod,
|
|
.rename = xfs_vn_rename,
|
|
.get_acl = xfs_get_acl,
|
|
.set_acl = xfs_set_acl,
|
|
.getattr = xfs_vn_getattr,
|
|
.setattr = xfs_vn_setattr,
|
|
.listxattr = xfs_vn_listxattr,
|
|
.update_time = xfs_vn_update_time,
|
|
.tmpfile = xfs_vn_tmpfile,
|
|
};
|
|
|
|
static const struct inode_operations xfs_symlink_inode_operations = {
|
|
.get_link = xfs_vn_get_link,
|
|
.getattr = xfs_vn_getattr,
|
|
.setattr = xfs_vn_setattr,
|
|
.listxattr = xfs_vn_listxattr,
|
|
.update_time = xfs_vn_update_time,
|
|
};
|
|
|
|
static const struct inode_operations xfs_inline_symlink_inode_operations = {
|
|
.get_link = xfs_vn_get_link_inline,
|
|
.getattr = xfs_vn_getattr,
|
|
.setattr = xfs_vn_setattr,
|
|
.listxattr = xfs_vn_listxattr,
|
|
.update_time = xfs_vn_update_time,
|
|
};
|
|
|
|
/* Figure out if this file actually supports DAX. */
|
|
static bool
|
|
xfs_inode_supports_dax(
|
|
struct xfs_inode *ip)
|
|
{
|
|
struct xfs_mount *mp = ip->i_mount;
|
|
|
|
/* Only supported on non-reflinked files. */
|
|
if (!S_ISREG(VFS_I(ip)->i_mode) || xfs_is_reflink_inode(ip))
|
|
return false;
|
|
|
|
/* DAX mount option or DAX iflag must be set. */
|
|
if (!(mp->m_flags & XFS_MOUNT_DAX) &&
|
|
!(ip->i_d.di_flags2 & XFS_DIFLAG2_DAX))
|
|
return false;
|
|
|
|
/* Block size must match page size */
|
|
if (mp->m_sb.sb_blocksize != PAGE_SIZE)
|
|
return false;
|
|
|
|
/* Device has to support DAX too. */
|
|
return xfs_find_daxdev_for_inode(VFS_I(ip)) != NULL;
|
|
}
|
|
|
|
STATIC void
|
|
xfs_diflags_to_iflags(
|
|
struct inode *inode,
|
|
struct xfs_inode *ip)
|
|
{
|
|
uint16_t flags = ip->i_d.di_flags;
|
|
|
|
inode->i_flags &= ~(S_IMMUTABLE | S_APPEND | S_SYNC |
|
|
S_NOATIME | S_DAX);
|
|
|
|
if (flags & XFS_DIFLAG_IMMUTABLE)
|
|
inode->i_flags |= S_IMMUTABLE;
|
|
if (flags & XFS_DIFLAG_APPEND)
|
|
inode->i_flags |= S_APPEND;
|
|
if (flags & XFS_DIFLAG_SYNC)
|
|
inode->i_flags |= S_SYNC;
|
|
if (flags & XFS_DIFLAG_NOATIME)
|
|
inode->i_flags |= S_NOATIME;
|
|
if (xfs_inode_supports_dax(ip))
|
|
inode->i_flags |= S_DAX;
|
|
}
|
|
|
|
/*
|
|
* Initialize the Linux inode.
|
|
*
|
|
* When reading existing inodes from disk this is called directly from xfs_iget,
|
|
* when creating a new inode it is called from xfs_ialloc after setting up the
|
|
* inode. These callers have different criteria for clearing XFS_INEW, so leave
|
|
* it up to the caller to deal with unlocking the inode appropriately.
|
|
*/
|
|
void
|
|
xfs_setup_inode(
|
|
struct xfs_inode *ip)
|
|
{
|
|
struct inode *inode = &ip->i_vnode;
|
|
gfp_t gfp_mask;
|
|
|
|
inode->i_ino = ip->i_ino;
|
|
inode->i_state = I_NEW;
|
|
|
|
inode_sb_list_add(inode);
|
|
/* make the inode look hashed for the writeback code */
|
|
inode_fake_hash(inode);
|
|
|
|
inode->i_uid = xfs_uid_to_kuid(ip->i_d.di_uid);
|
|
inode->i_gid = xfs_gid_to_kgid(ip->i_d.di_gid);
|
|
|
|
i_size_write(inode, ip->i_d.di_size);
|
|
xfs_diflags_to_iflags(inode, ip);
|
|
|
|
if (S_ISDIR(inode->i_mode)) {
|
|
/*
|
|
* We set the i_rwsem class here to avoid potential races with
|
|
* lockdep_annotate_inode_mutex_key() reinitialising the lock
|
|
* after a filehandle lookup has already found the inode in
|
|
* cache before it has been unlocked via unlock_new_inode().
|
|
*/
|
|
lockdep_set_class(&inode->i_rwsem,
|
|
&inode->i_sb->s_type->i_mutex_dir_key);
|
|
lockdep_set_class(&ip->i_lock.mr_lock, &xfs_dir_ilock_class);
|
|
ip->d_ops = ip->i_mount->m_dir_inode_ops;
|
|
} else {
|
|
ip->d_ops = ip->i_mount->m_nondir_inode_ops;
|
|
lockdep_set_class(&ip->i_lock.mr_lock, &xfs_nondir_ilock_class);
|
|
}
|
|
|
|
/*
|
|
* Ensure all page cache allocations are done from GFP_NOFS context to
|
|
* prevent direct reclaim recursion back into the filesystem and blowing
|
|
* stacks or deadlocking.
|
|
*/
|
|
gfp_mask = mapping_gfp_mask(inode->i_mapping);
|
|
mapping_set_gfp_mask(inode->i_mapping, (gfp_mask & ~(__GFP_FS)));
|
|
|
|
/*
|
|
* If there is no attribute fork no ACL can exist on this inode,
|
|
* and it can't have any file capabilities attached to it either.
|
|
*/
|
|
if (!XFS_IFORK_Q(ip)) {
|
|
inode_has_no_xattr(inode);
|
|
cache_no_acl(inode);
|
|
}
|
|
}
|
|
|
|
void
|
|
xfs_setup_iops(
|
|
struct xfs_inode *ip)
|
|
{
|
|
struct inode *inode = &ip->i_vnode;
|
|
|
|
switch (inode->i_mode & S_IFMT) {
|
|
case S_IFREG:
|
|
inode->i_op = &xfs_inode_operations;
|
|
inode->i_fop = &xfs_file_operations;
|
|
if (IS_DAX(inode))
|
|
inode->i_mapping->a_ops = &xfs_dax_aops;
|
|
else
|
|
inode->i_mapping->a_ops = &xfs_address_space_operations;
|
|
break;
|
|
case S_IFDIR:
|
|
if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb))
|
|
inode->i_op = &xfs_dir_ci_inode_operations;
|
|
else
|
|
inode->i_op = &xfs_dir_inode_operations;
|
|
inode->i_fop = &xfs_dir_file_operations;
|
|
break;
|
|
case S_IFLNK:
|
|
if (ip->i_df.if_flags & XFS_IFINLINE)
|
|
inode->i_op = &xfs_inline_symlink_inode_operations;
|
|
else
|
|
inode->i_op = &xfs_symlink_inode_operations;
|
|
break;
|
|
default:
|
|
inode->i_op = &xfs_inode_operations;
|
|
init_special_inode(inode, inode->i_mode, inode->i_rdev);
|
|
break;
|
|
}
|
|
}
|