2019-05-27 06:55:05 +00:00
|
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
2005-04-16 22:20:36 +00:00
|
|
|
/*
|
2005-05-04 20:29:35 +00:00
|
|
|
* Copyright (C) International Business Machines Corp., 2000-2002
|
|
|
|
* Portions Copyright (C) Christoph Hellwig, 2001-2002
|
2005-04-16 22:20:36 +00:00
|
|
|
*/
|
|
|
|
|
2010-06-04 09:30:02 +00:00
|
|
|
#include <linux/mm.h>
|
2005-04-16 22:20:36 +00:00
|
|
|
#include <linux/fs.h>
|
2013-12-20 13:16:51 +00:00
|
|
|
#include <linux/posix_acl.h>
|
2010-03-03 14:05:02 +00:00
|
|
|
#include <linux/quotaops.h>
|
2005-04-16 22:20:36 +00:00
|
|
|
#include "jfs_incore.h"
|
2005-05-04 20:29:35 +00:00
|
|
|
#include "jfs_inode.h"
|
2005-04-16 22:20:36 +00:00
|
|
|
#include "jfs_dmap.h"
|
|
|
|
#include "jfs_txnmgr.h"
|
|
|
|
#include "jfs_xattr.h"
|
|
|
|
#include "jfs_acl.h"
|
|
|
|
#include "jfs_debug.h"
|
|
|
|
|
2011-07-17 00:44:56 +00:00
|
|
|
int jfs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2010-05-26 15:53:25 +00:00
|
|
|
struct inode *inode = file->f_mapping->host;
|
2005-04-16 22:20:36 +00:00
|
|
|
int rc = 0;
|
|
|
|
|
2017-07-07 19:20:52 +00:00
|
|
|
rc = file_write_and_wait_range(file, start, end);
|
2011-07-17 00:44:56 +00:00
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
|
2016-01-22 20:40:57 +00:00
|
|
|
inode_lock(inode);
|
2015-02-02 05:37:00 +00:00
|
|
|
if (!(inode->i_state & I_DIRTY_ALL) ||
|
2005-04-16 22:20:36 +00:00
|
|
|
(datasync && !(inode->i_state & I_DIRTY_DATASYNC))) {
|
|
|
|
/* Make sure committed changes hit the disk */
|
|
|
|
jfs_flush_journal(JFS_SBI(inode->i_sb)->log, 1);
|
2016-01-22 20:40:57 +00:00
|
|
|
inode_unlock(inode);
|
2005-04-16 22:20:36 +00:00
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
rc |= jfs_commit_inode(inode, 1);
|
2016-01-22 20:40:57 +00:00
|
|
|
inode_unlock(inode);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
return rc ? -EIO : 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int jfs_open(struct inode *inode, struct file *file)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
2010-03-03 14:05:06 +00:00
|
|
|
if ((rc = dquot_file_open(inode, file)))
|
2005-04-16 22:20:36 +00:00
|
|
|
return rc;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We attempt to allow only one "active" file open per aggregate
|
|
|
|
* group. Otherwise, appending to files in parallel can cause
|
|
|
|
* fragmentation within the files.
|
|
|
|
*
|
|
|
|
* If the file is empty, it was probably just created and going
|
|
|
|
* to be written to. If it has a size, we'll hold off until the
|
|
|
|
* file is actually grown.
|
|
|
|
*/
|
|
|
|
if (S_ISREG(inode->i_mode) && file->f_mode & FMODE_WRITE &&
|
|
|
|
(inode->i_size == 0)) {
|
|
|
|
struct jfs_inode_info *ji = JFS_IP(inode);
|
|
|
|
spin_lock_irq(&ji->ag_lock);
|
|
|
|
if (ji->active_ag == -1) {
|
2011-06-20 15:53:46 +00:00
|
|
|
struct jfs_sb_info *jfs_sb = JFS_SBI(inode->i_sb);
|
|
|
|
ji->active_ag = BLKTOAG(addressPXD(&ji->ixpxd), jfs_sb);
|
2015-05-31 09:53:28 +00:00
|
|
|
atomic_inc(&jfs_sb->bmap->db_active[ji->active_ag]);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
spin_unlock_irq(&ji->ag_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
static int jfs_release(struct inode *inode, struct file *file)
|
|
|
|
{
|
|
|
|
struct jfs_inode_info *ji = JFS_IP(inode);
|
|
|
|
|
|
|
|
spin_lock_irq(&ji->ag_lock);
|
|
|
|
if (ji->active_ag != -1) {
|
|
|
|
struct bmap *bmap = JFS_SBI(inode->i_sb)->bmap;
|
|
|
|
atomic_dec(&bmap->db_active[ji->active_ag]);
|
|
|
|
ji->active_ag = -1;
|
|
|
|
}
|
|
|
|
spin_unlock_irq(&ji->ag_lock);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-03-03 14:05:02 +00:00
|
|
|
int jfs_setattr(struct dentry *dentry, struct iattr *iattr)
|
|
|
|
{
|
2015-03-17 22:25:59 +00:00
|
|
|
struct inode *inode = d_inode(dentry);
|
2010-03-03 14:05:02 +00:00
|
|
|
int rc;
|
|
|
|
|
2016-05-26 14:55:18 +00:00
|
|
|
rc = setattr_prepare(dentry, iattr);
|
2010-03-03 14:05:02 +00:00
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
|
2015-07-15 18:53:19 +00:00
|
|
|
if (is_quota_modification(inode, iattr)) {
|
|
|
|
rc = dquot_initialize(inode);
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
|
|
|
}
|
2012-02-10 19:40:34 +00:00
|
|
|
if ((iattr->ia_valid & ATTR_UID && !uid_eq(iattr->ia_uid, inode->i_uid)) ||
|
|
|
|
(iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid))) {
|
2010-03-03 14:05:03 +00:00
|
|
|
rc = dquot_transfer(inode, iattr);
|
|
|
|
if (rc)
|
|
|
|
return rc;
|
2010-03-03 14:05:02 +00:00
|
|
|
}
|
|
|
|
|
2010-06-04 09:30:02 +00:00
|
|
|
if ((iattr->ia_valid & ATTR_SIZE) &&
|
|
|
|
iattr->ia_size != i_size_read(inode)) {
|
2011-06-24 18:29:45 +00:00
|
|
|
inode_dio_wait(inode);
|
|
|
|
|
2012-12-15 10:54:25 +00:00
|
|
|
rc = inode_newsize_ok(inode, iattr->ia_size);
|
2010-06-04 09:30:02 +00:00
|
|
|
if (rc)
|
|
|
|
return rc;
|
2012-12-15 10:54:25 +00:00
|
|
|
|
|
|
|
truncate_setsize(inode, iattr->ia_size);
|
|
|
|
jfs_truncate(inode);
|
2010-06-04 09:30:02 +00:00
|
|
|
}
|
2010-03-03 14:05:02 +00:00
|
|
|
|
2010-06-04 09:30:02 +00:00
|
|
|
setattr_copy(inode, iattr);
|
|
|
|
mark_inode_dirty(inode);
|
2010-03-03 14:05:02 +00:00
|
|
|
|
2010-06-04 09:30:02 +00:00
|
|
|
if (iattr->ia_valid & ATTR_MODE)
|
2013-12-20 13:16:51 +00:00
|
|
|
rc = posix_acl_chmod(inode, inode->i_mode);
|
2010-03-03 14:05:02 +00:00
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2007-02-12 08:55:39 +00:00
|
|
|
const struct inode_operations jfs_file_inode_operations = {
|
2005-04-16 22:20:36 +00:00
|
|
|
.listxattr = jfs_listxattr,
|
|
|
|
.setattr = jfs_setattr,
|
2010-03-03 14:05:02 +00:00
|
|
|
#ifdef CONFIG_JFS_POSIX_ACL
|
2011-07-23 15:37:31 +00:00
|
|
|
.get_acl = jfs_get_acl,
|
2013-12-20 13:16:51 +00:00
|
|
|
.set_acl = jfs_set_acl,
|
2005-04-16 22:20:36 +00:00
|
|
|
#endif
|
|
|
|
};
|
|
|
|
|
2006-03-28 09:56:42 +00:00
|
|
|
const struct file_operations jfs_file_operations = {
|
2005-04-16 22:20:36 +00:00
|
|
|
.open = jfs_open,
|
|
|
|
.llseek = generic_file_llseek,
|
2014-04-02 18:33:16 +00:00
|
|
|
.read_iter = generic_file_read_iter,
|
2014-04-03 07:17:43 +00:00
|
|
|
.write_iter = generic_file_write_iter,
|
2005-04-16 22:20:36 +00:00
|
|
|
.mmap = generic_file_mmap,
|
2006-10-30 17:47:02 +00:00
|
|
|
.splice_read = generic_file_splice_read,
|
2014-04-05 08:27:08 +00:00
|
|
|
.splice_write = iter_file_splice_write,
|
2005-04-16 22:20:36 +00:00
|
|
|
.fsync = jfs_fsync,
|
|
|
|
.release = jfs_release,
|
2008-01-27 22:58:51 +00:00
|
|
|
.unlocked_ioctl = jfs_ioctl,
|
2008-01-27 23:02:02 +00:00
|
|
|
#ifdef CONFIG_COMPAT
|
|
|
|
.compat_ioctl = jfs_compat_ioctl,
|
|
|
|
#endif
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|