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82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/*
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* Copyright (C) 2005-2012 Junjiro R. Okajima
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*
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* This program, aufs 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 the
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* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* copy-up/down functions
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*/
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#ifndef __AUFS_CPUP_H__
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#define __AUFS_CPUP_H__
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#ifdef __KERNEL__
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#include <linux/path.h>
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struct inode;
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struct file;
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void au_cpup_attr_flags(struct inode *dst, struct inode *src);
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void au_cpup_attr_timesizes(struct inode *inode);
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void au_cpup_attr_nlink(struct inode *inode, int force);
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void au_cpup_attr_changeable(struct inode *inode);
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void au_cpup_igen(struct inode *inode, struct inode *h_inode);
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void au_cpup_attr_all(struct inode *inode, int force);
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/* ---------------------------------------------------------------------- */
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/* cpup flags */
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#define AuCpup_DTIME 1 /* do dtime_store/revert */
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#define AuCpup_KEEPLINO (1 << 1) /* do not clear the lower xino,
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for link(2) */
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#define au_ftest_cpup(flags, name) ((flags) & AuCpup_##name)
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#define au_fset_cpup(flags, name) \
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do { (flags) |= AuCpup_##name; } while (0)
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#define au_fclr_cpup(flags, name) \
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do { (flags) &= ~AuCpup_##name; } while (0)
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int au_copy_file(struct file *dst, struct file *src, loff_t len);
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int au_sio_cpup_single(struct dentry *dentry, aufs_bindex_t bdst,
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aufs_bindex_t bsrc, loff_t len, unsigned int flags,
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struct dentry *dst_parent);
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int au_sio_cpup_simple(struct dentry *dentry, aufs_bindex_t bdst, loff_t len,
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unsigned int flags);
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int au_sio_cpup_wh(struct dentry *dentry, aufs_bindex_t bdst, loff_t len,
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struct file *file);
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int au_cp_dirs(struct dentry *dentry, aufs_bindex_t bdst,
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int (*cp)(struct dentry *dentry, aufs_bindex_t bdst,
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struct dentry *h_parent, void *arg),
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void *arg);
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int au_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst);
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int au_test_and_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst);
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/* ---------------------------------------------------------------------- */
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/* keep timestamps when copyup */
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struct au_dtime {
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struct dentry *dt_dentry;
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struct path dt_h_path;
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struct timespec dt_atime, dt_mtime;
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};
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void au_dtime_store(struct au_dtime *dt, struct dentry *dentry,
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struct path *h_path);
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void au_dtime_revert(struct au_dtime *dt);
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#endif /* __KERNEL__ */
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#endif /* __AUFS_CPUP_H__ */
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