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100 lines
3.2 KiB
100 lines
3.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright (C) 2005-2020 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, see <http://www.gnu.org/licenses/>. |
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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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struct au_pin; |
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void au_cpup_attr_flags(struct inode *dst, unsigned int iflags); |
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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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struct au_cp_generic { |
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struct dentry *dentry; |
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aufs_bindex_t bdst, bsrc; |
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loff_t len; |
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struct au_pin *pin; |
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unsigned int flags; |
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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 AuCpup_RENAME (1 << 2) /* rename after cpup */ |
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#define AuCpup_HOPEN (1 << 3) /* call h_open_pre/post() in |
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cpup */ |
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#define AuCpup_OVERWRITE (1 << 4) /* allow overwriting the |
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existing entry */ |
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#define AuCpup_RWDST (1 << 5) /* force write target even if |
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the branch is marked as RO */ |
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#ifndef CONFIG_AUFS_BR_HFSPLUS |
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#undef AuCpup_HOPEN |
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#define AuCpup_HOPEN 0 |
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#endif |
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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_simple(struct au_cp_generic *cpg); |
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int au_sio_cpdown_simple(struct au_cp_generic *cpg); |
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int au_sio_cpup_wh(struct au_cp_generic *cpg, 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 au_pin *pin, |
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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 timespec64 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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