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-rw-r--r--fs/aufs/cpup.h81
1 files changed, 81 insertions, 0 deletions
diff --git a/fs/aufs/cpup.h b/fs/aufs/cpup.h
new file mode 100644
index 000000000..ccba2c427
--- /dev/null
+++ b/fs/aufs/cpup.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2005-2016 Junjiro R. Okajima
+ */
+
+/*
+ * copy-up/down functions
+ */
+
+#ifndef __AUFS_CPUP_H__
+#define __AUFS_CPUP_H__
+
+#ifdef __KERNEL__
+
+#include <linux/path.h>
+
+struct inode;
+struct file;
+struct au_pin;
+
+void au_cpup_attr_flags(struct inode *dst, unsigned int iflags);
+void au_cpup_attr_timesizes(struct inode *inode);
+void au_cpup_attr_nlink(struct inode *inode, int force);
+void au_cpup_attr_changeable(struct inode *inode);
+void au_cpup_igen(struct inode *inode, struct inode *h_inode);
+void au_cpup_attr_all(struct inode *inode, int force);
+
+/* ---------------------------------------------------------------------- */
+
+struct au_cp_generic {
+ struct dentry *dentry;
+ aufs_bindex_t bdst, bsrc;
+ loff_t len;
+ struct au_pin *pin;
+ unsigned int flags;
+};
+
+/* cpup flags */
+#define AuCpup_DTIME 1 /* do dtime_store/revert */
+#define AuCpup_KEEPLINO (1 << 1) /* do not clear the lower xino,
+ for link(2) */
+#define AuCpup_RENAME (1 << 2) /* rename after cpup */
+#define AuCpup_HOPEN (1 << 3) /* call h_open_pre/post() in
+ cpup */
+#define AuCpup_OVERWRITE (1 << 4) /* allow overwriting the
+ existing entry */
+#define AuCpup_RWDST (1 << 5) /* force write target even if
+ the branch is marked as RO */
+
+#define au_ftest_cpup(flags, name) ((flags) & AuCpup_##name)
+#define au_fset_cpup(flags, name) \
+ do { (flags) |= AuCpup_##name; } while (0)
+#define au_fclr_cpup(flags, name) \
+ do { (flags) &= ~AuCpup_##name; } while (0)
+
+int au_copy_file(struct file *dst, struct file *src, loff_t len);
+int au_sio_cpup_simple(struct au_cp_generic *cpg);
+int au_sio_cpdown_simple(struct au_cp_generic *cpg);
+int au_sio_cpup_wh(struct au_cp_generic *cpg, struct file *file);
+
+int au_cp_dirs(struct dentry *dentry, aufs_bindex_t bdst,
+ int (*cp)(struct dentry *dentry, aufs_bindex_t bdst,
+ struct au_pin *pin,
+ struct dentry *h_parent, void *arg),
+ void *arg);
+int au_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst);
+int au_test_and_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst);
+
+/* ---------------------------------------------------------------------- */
+
+/* keep timestamps when copyup */
+struct au_dtime {
+ struct dentry *dt_dentry;
+ struct path dt_h_path;
+ struct timespec dt_atime, dt_mtime;
+};
+void au_dtime_store(struct au_dtime *dt, struct dentry *dentry,
+ struct path *h_path);
+void au_dtime_revert(struct au_dtime *dt);
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_CPUP_H__ */