/usr/src/aufs-4.9+20161219/fs/aufs/dir.h is in aufs-dkms 4.9+20161219-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | /*
* Copyright (C) 2005-2016 Junjiro R. Okajima
*
* This program, aufs is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* directory operations
*/
#ifndef __AUFS_DIR_H__
#define __AUFS_DIR_H__
#ifdef __KERNEL__
#include <linux/fs.h>
/* ---------------------------------------------------------------------- */
/* need to be faster and smaller */
struct au_nhash {
unsigned int nh_num;
struct hlist_head *nh_head;
};
struct au_vdir_destr {
unsigned char len;
unsigned char name[0];
} __packed;
struct au_vdir_dehstr {
struct hlist_node hash;
union {
struct au_vdir_destr *str;
struct llist_node lnode; /* delayed free */
};
} ____cacheline_aligned_in_smp;
struct au_vdir_de {
ino_t de_ino;
unsigned char de_type;
/* caution: packed */
struct au_vdir_destr de_str;
} __packed;
struct au_vdir_wh {
struct hlist_node wh_hash;
#ifdef CONFIG_AUFS_SHWH
ino_t wh_ino;
aufs_bindex_t wh_bindex;
unsigned char wh_type;
#else
aufs_bindex_t wh_bindex;
#endif
/* caution: packed */
struct au_vdir_destr wh_str;
} __packed;
union au_vdir_deblk_p {
unsigned char *deblk;
struct au_vdir_de *de;
};
struct au_vdir {
unsigned char **vd_deblk;
unsigned long vd_nblk;
struct {
unsigned long ul;
union au_vdir_deblk_p p;
} vd_last;
unsigned long vd_version;
unsigned int vd_deblk_sz;
union {
unsigned long vd_jiffy;
struct llist_node vd_lnode; /* delayed free */
};
} ____cacheline_aligned_in_smp;
/* ---------------------------------------------------------------------- */
/* dir.c */
extern const struct file_operations aufs_dir_fop;
void au_add_nlink(struct inode *dir, struct inode *h_dir);
void au_sub_nlink(struct inode *dir, struct inode *h_dir);
loff_t au_dir_size(struct file *file, struct dentry *dentry);
void au_dir_ts(struct inode *dir, aufs_bindex_t bsrc);
int au_test_empty_lower(struct dentry *dentry);
int au_test_empty(struct dentry *dentry, struct au_nhash *whlist);
/* vdir.c */
unsigned int au_rdhash_est(loff_t sz);
int au_nhash_alloc(struct au_nhash *nhash, unsigned int num_hash, gfp_t gfp);
void au_nhash_wh_free(struct au_nhash *whlist);
int au_nhash_test_longer_wh(struct au_nhash *whlist, aufs_bindex_t btgt,
int limit);
int au_nhash_test_known_wh(struct au_nhash *whlist, char *name, int nlen);
int au_nhash_append_wh(struct au_nhash *whlist, char *name, int nlen, ino_t ino,
unsigned int d_type, aufs_bindex_t bindex,
unsigned char shwh);
void au_vdir_free(struct au_vdir *vdir, int atonce);
int au_vdir_init(struct file *file);
int au_vdir_fill_de(struct file *file, struct dir_context *ctx);
/* ioctl.c */
long aufs_ioctl_dir(struct file *file, unsigned int cmd, unsigned long arg);
#ifdef CONFIG_AUFS_RDU
/* rdu.c */
long au_rdu_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
#ifdef CONFIG_COMPAT
long au_rdu_compat_ioctl(struct file *file, unsigned int cmd,
unsigned long arg);
#endif
#else
AuStub(long, au_rdu_ioctl, return -EINVAL, struct file *file,
unsigned int cmd, unsigned long arg)
#ifdef CONFIG_COMPAT
AuStub(long, au_rdu_compat_ioctl, return -EINVAL, struct file *file,
unsigned int cmd, unsigned long arg)
#endif
#endif
#endif /* __KERNEL__ */
#endif /* __AUFS_DIR_H__ */
|