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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
/*
* mountP.h - private library header file
*
* Copyright (C) 2008-2009 Karel Zak <kzak@redhat.com>
*
* This file may be redistributed under the terms of the
* GNU Lesser General Public License.
*/
#ifndef _LIBMOUNT_PRIVATE_H
#define _LIBMOUNT_PRIVATE_H
#include <sys/types.h>
#define USE_UNSTABLE_LIBMOUNT_API
#include "mount.h"
#include "list.h"
/* features */
#define CONFIG_LIBMOUNT_ASSERT
#define CONFIG_LIBMOUNT_DEBUG
#ifdef CONFIG_LIBMOUNT_ASSERT
#include <assert.h>
#endif
/*
* Debug
*/
#if defined(TEST_PROGRAM) && !defined(LIBMOUNT_DEBUG)
#define CONFIG_LIBMOUNT_DEBUG
#endif
#define DEBUG_INIT (1 << 1)
#define DEBUG_CACHE (1 << 2)
#define DEBUG_OPTIONS (1 << 3)
#define DEBUG_LOCKS (1 << 4)
#define DEBUG_TAB (1 << 5)
#define DEBUG_ALL 0xFFFF
#ifdef CONFIG_LIBMOUNT_DEBUG
#include <stdio.h>
extern int libmount_debug_mask;
#define DBG(m,x) if ((m) & libmount_debug_mask) x
#else
#define DBG(m,x)
#endif
#ifdef TEST_PROGRAM
struct mtest {
const char *name;
int (*body)(struct mtest *ts, int argc, char *argv[]);
const char *usage;
};
/* utils.c */
extern int mnt_run_test(struct mtest *tests, int argc, char *argv[]);
#endif
/* utils.c */
extern char *mnt_getenv_safe(const char *arg);
extern char *mnt_get_username(const uid_t uid);
/*
* Generic iterator
*/
struct _mnt_iter {
struct list_head *p; /* current position */
struct list_head *head; /* start position */
int direction; /* MNT_ITER_{FOR,BACK}WARD */
};
#define IS_ITER_FORWARD(_i) ((_i)->direction == MNT_ITER_FORWARD)
#define IS_ITER_BACKWARD(_i) ((_i)->direction == MNT_ITER_BACKWARD)
#define MNT_ITER_INIT(itr, list) \
do { \
(itr)->p = IS_ITER_FORWARD(itr) ? \
(list)->next : (list)->prev; \
(itr)->head = (list); \
} while(0)
#define MNT_ITER_ITERATE(itr, res, restype, member) \
do { \
res = list_entry((itr)->p, restype, member); \
(itr)->p = IS_ITER_FORWARD(itr) ? \
(itr)->p->next : (itr)->p->prev; \
} while(0)
/*
* mnt_optls entry
*/
struct _mnt_optent {
char *name; /* option name (allcocated when mapent is NULL) */
char *value; /* option argument value */
int mask; /* MNT_{INVMASK,MDATA,MFLAG,NOMTAB,NOSYS}
* modifiable flags (initial value comes from map->mask)
*/
const struct mnt_optmap *mapent;/* the option description (msp entry) */
const struct mnt_optmap *map; /* head of the map */
struct list_head opts; /* list of options */
};
/*
* Container (list) for mount options
*/
struct _mnt_optls {
struct mnt_optmap const **maps; /* array with option maps */
size_t nmaps; /* number of maps */
struct list_head opts; /* list of options */
};
/*
* This struct represents one entry in mtab/fstab/mountinfo file.
*/
struct _mnt_fs {
struct list_head ents;
int id; /* mountinfo[1]: ID */
int parent; /* moutninfo[2]: parent */
dev_t devno; /* moutninfo[3]: st_dev */
char *source; /* fstab[1]: mountinfo[10]:
* source dev, file, dir or TAG */
char *tagname; /* fstab[1]: tag name - "LABEL", "UUID", ..*/
char *tagval; /* tag value */
char *mntroot; /* mountinfo[4]: root of the mount within the FS */
char *target; /* mountinfo[5], fstab[2]: mountpoint */
char *fstype; /* mountinfo[9], fstab[3]: filesystem type */
char *optstr; /* mountinfo[6,11], fstab[4]: option string */
char *vfs_optstr; /* mountinfo[6]: fs-independent (VFS) options */
char *fs_optstr; /* mountinfo[11]: fs-depend options */
int freq; /* fstab[5]: dump frequency in days */
int passno; /* fstab[6]: pass number on parallel fsck */
int flags; /* MNT_FS_* flags */
void *userdata; /* library independent data */
};
/*
* fs flags
*/
#define MNT_FS_PSEUDO (1 << 1) /* pseudo filesystem */
#define MNT_FS_NET (1 << 2) /* network filesystem */
/*
* File format
*/
enum {
MNT_FMT_FSTAB = 1, /* /etc/{fs,m}tab */
MNT_FMT_MOUNTINFO /* /proc/#/mountinfo */
};
/*
* mtab/fstab/mountinfo file
*/
struct _mnt_tab {
char *filename; /* file name or NULL */
int fmt; /* MNT_FMT_* file format */
int nents; /* number of valid entries */
mnt_cache *cache; /* canonicalized paths/tags cache */
int (*errcb)(mnt_tab *tb, const char *filename,
int line, int flag);
struct list_head ents; /* list of entries (mentry) */
};
/* optmap.c */
extern const struct mnt_optmap *mnt_optmap_get_entry(struct mnt_optmap const **maps,
int nmaps, const char *name,
size_t namelen, const struct mnt_optmap **mapent);
extern int mnt_optmap_enum_to_number(const struct mnt_optmap *mapent,
const char *rawdata, size_t len);
extern const char *mnt_optmap_get_type(const struct mnt_optmap *mapent);
extern int mnt_optmap_require_value(const struct mnt_optmap *mapent);
/* optent.c */
/* private option masks -- see mount.h.in for the publick masks */
#define MNT_HASVAL (1 << 10)
extern mnt_optent *mnt_new_optent(const char *name, size_t namesz,
const char *value, size_t valsz,
struct mnt_optmap const **maps, int nmaps);
extern void mnt_free_optent(mnt_optent *op);
extern mnt_optent *mnt_new_optent_from_optstr(char **optstr,
struct mnt_optmap const **maps, int nmaps);
extern int mnt_optent_assign_map(mnt_optent *op,
struct mnt_optmap const **maps, int nmaps);
/* fs.c */
extern int __mnt_fs_set_source(mnt_fs *fs, char *source);
extern int __mnt_fs_set_fstype(mnt_fs *fs, char *fstype);
#endif /* _LIBMOUNT_PRIVATE_H */
|
