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
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2005 Silicon Graphics, Inc.
* All Rights Reserved.
*/
#ifndef __LIBFROG_PATH_H__
#define __LIBFROG_PATH_H__
#include "platform_defs.h"
/*
* XFS Filesystem Paths
*
* Utility routines for iterating and searching through the list
* of known mounted filesystems and project paths.
*/
#define FS_MOUNT_POINT (1<<0)
#define FS_PROJECT_PATH (1<<1)
#define FS_FOREIGN (1<<2)
typedef struct fs_path {
char *fs_name; /* Data device for filesystem */
dev_t fs_datadev;
char *fs_log; /* External log device, if any */
dev_t fs_logdev;
char *fs_rt; /* Realtime device, if any */
dev_t fs_rtdev;
char *fs_dir; /* Directory / mount point */
uint fs_flags; /* FS_{MOUNT_POINT,PROJECT_PATH}*/
uint fs_prid; /* Project ID for tree root */
} fs_path_t;
extern int fs_count; /* number of entries in fs table */
extern int xfs_fs_count; /* number of xfs entries in fs table */
extern fs_path_t *fs_table; /* array of entries in fs table */
extern fs_path_t *fs_path; /* current entry in the fs table */
extern char *mtab_file;
extern void fs_table_initialise(int, char *[], int, char *[]);
extern void fs_table_destroy(void);
extern int fs_table_insert_project_path(char *__dir, uint __projid);
extern fs_path_t *fs_table_lookup(const char *__dir, uint __flags);
extern fs_path_t *fs_table_lookup_mount(const char *__dir);
extern fs_path_t *fs_table_lookup_blkdev(const char *bdev);
typedef struct fs_cursor {
uint count; /* total count of mount entries */
uint index; /* current position in table */
uint flags; /* iterator flags: mounts/trees */
fs_path_t *table; /* local/global table pointer */
fs_path_t local; /* space for single-entry table */
} fs_cursor_t;
extern void fs_cursor_initialise(char *__dir, uint __flags, fs_cursor_t *__cp);
extern fs_path_t *fs_cursor_next_entry(fs_cursor_t *__cp);
/* Path information. */
struct path_list;
struct path_component;
struct path_component *path_component_init(const char *name, uint64_t ino);
void path_component_free(struct path_component *pc);
struct path_list *path_list_init(void);
void path_list_free(struct path_list *path);
void path_list_add_parent_component(struct path_list *path,
struct path_component *pc);
void path_list_add_component(struct path_list *path, struct path_component *pc);
void path_list_del_component(struct path_list *path, struct path_component *pc);
ssize_t path_list_to_string(const struct path_list *path, char *buf,
size_t buflen);
typedef int (*path_walk_fn_t)(const char *name, uint64_t ino, void *arg);
int path_walk_components(const struct path_list *path, path_walk_fn_t fn,
void *arg);
bool path_will_loop(const struct path_list *path, uint64_t ino);
#endif /* __LIBFROG_PATH_H__ */
|
