Contents of /trunk/mkinitrd-magellan/busybox/e2fsprogs/old_e2fsprogs/blkid/blkidP.h
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Sun May 30 11:32:42 2010 UTC (13 years, 11 months ago) by niro
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Sun May 30 11:32:42 2010 UTC (13 years, 11 months ago) by niro
File MIME type: text/plain
File size: 5464 byte(s)
-updated to busybox-1.16.1 and enabled blkid/uuid support in default config
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * blkidP.h - Internal interfaces for libblkid |
4 | * |
5 | * Copyright (C) 2001 Andreas Dilger |
6 | * Copyright (C) 2003 Theodore Ts'o |
7 | * |
8 | * %Begin-Header% |
9 | * This file may be redistributed under the terms of the |
10 | * GNU Lesser General Public License. |
11 | * %End-Header% |
12 | */ |
13 | #ifndef BLKID_BLKIDP_H |
14 | #define BLKID_BLKIDP_H 1 |
15 | |
16 | #include <sys/types.h> |
17 | #include <stdio.h> |
18 | |
19 | #include "blkid.h" |
20 | #include "list.h" |
21 | |
22 | #ifdef __GNUC__ |
23 | #define __BLKID_ATTR(x) __attribute__(x) |
24 | #else |
25 | #define __BLKID_ATTR(x) |
26 | #endif |
27 | |
28 | |
29 | /* |
30 | * This describes the attributes of a specific device. |
31 | * We can traverse all of the tags by bid_tags (linking to the tag bit_names). |
32 | * The bid_label and bid_uuid fields are shortcuts to the LABEL and UUID tag |
33 | * values, if they exist. |
34 | */ |
35 | struct blkid_struct_dev |
36 | { |
37 | struct list_head bid_devs; /* All devices in the cache */ |
38 | struct list_head bid_tags; /* All tags for this device */ |
39 | blkid_cache bid_cache; /* Dev belongs to this cache */ |
40 | char *bid_name; /* Device inode pathname */ |
41 | char *bid_type; /* Preferred device TYPE */ |
42 | int bid_pri; /* Device priority */ |
43 | dev_t bid_devno; /* Device major/minor number */ |
44 | time_t bid_time; /* Last update time of device */ |
45 | unsigned int bid_flags; /* Device status bitflags */ |
46 | char *bid_label; /* Shortcut to device LABEL */ |
47 | char *bid_uuid; /* Shortcut to binary UUID */ |
48 | }; |
49 | |
50 | #define BLKID_BID_FL_VERIFIED 0x0001 /* Device data validated from disk */ |
51 | #define BLKID_BID_FL_INVALID 0x0004 /* Device is invalid */ |
52 | |
53 | /* |
54 | * Each tag defines a NAME=value pair for a particular device. The tags |
55 | * are linked via bit_names for a single device, so that traversing the |
56 | * names list will get you a list of all tags associated with a device. |
57 | * They are also linked via bit_values for all devices, so one can easily |
58 | * search all tags with a given NAME for a specific value. |
59 | */ |
60 | struct blkid_struct_tag |
61 | { |
62 | struct list_head bit_tags; /* All tags for this device */ |
63 | struct list_head bit_names; /* All tags with given NAME */ |
64 | char *bit_name; /* NAME of tag (shared) */ |
65 | char *bit_val; /* value of tag */ |
66 | blkid_dev bit_dev; /* pointer to device */ |
67 | }; |
68 | typedef struct blkid_struct_tag *blkid_tag; |
69 | |
70 | /* |
71 | * Minimum number of seconds between device probes, even when reading |
72 | * from the cache. This is to avoid re-probing all devices which were |
73 | * just probed by another program that does not share the cache. |
74 | */ |
75 | #define BLKID_PROBE_MIN 2 |
76 | |
77 | /* |
78 | * Time in seconds an entry remains verified in the in-memory cache |
79 | * before being reverified (in case of long-running processes that |
80 | * keep a cache in memory and continue to use it for a long time). |
81 | */ |
82 | #define BLKID_PROBE_INTERVAL 200 |
83 | |
84 | /* This describes an entire blkid cache file and probed devices. |
85 | * We can traverse all of the found devices via bic_list. |
86 | * We can traverse all of the tag types by bic_tags, which hold empty tags |
87 | * for each tag type. Those tags can be used as list_heads for iterating |
88 | * through all devices with a specific tag type (e.g. LABEL). |
89 | */ |
90 | struct blkid_struct_cache |
91 | { |
92 | struct list_head bic_devs; /* List head of all devices */ |
93 | struct list_head bic_tags; /* List head of all tag types */ |
94 | time_t bic_time; /* Last probe time */ |
95 | time_t bic_ftime; /* Mod time of the cachefile */ |
96 | unsigned int bic_flags; /* Status flags of the cache */ |
97 | char *bic_filename; /* filename of cache */ |
98 | }; |
99 | |
100 | #define BLKID_BIC_FL_PROBED 0x0002 /* We probed /proc/partition devices */ |
101 | #define BLKID_BIC_FL_CHANGED 0x0004 /* Cache has changed from disk */ |
102 | |
103 | extern char *blkid_strdup(const char *s); |
104 | extern char *blkid_strndup(const char *s, const int length); |
105 | |
106 | #define BLKID_CACHE_FILE "/etc/blkid.tab" |
107 | extern const char *blkid_devdirs[]; |
108 | |
109 | #define BLKID_ERR_IO 5 |
110 | #define BLKID_ERR_PROC 9 |
111 | #define BLKID_ERR_MEM 12 |
112 | #define BLKID_ERR_CACHE 14 |
113 | #define BLKID_ERR_DEV 19 |
114 | #define BLKID_ERR_PARAM 22 |
115 | #define BLKID_ERR_BIG 27 |
116 | |
117 | /* |
118 | * Priority settings for different types of devices |
119 | */ |
120 | #define BLKID_PRI_EVMS 30 |
121 | #define BLKID_PRI_LVM 20 |
122 | #define BLKID_PRI_MD 10 |
123 | |
124 | #if defined(TEST_PROGRAM) && !defined(CONFIG_BLKID_DEBUG) |
125 | #define CONFIG_BLKID_DEBUG |
126 | #endif |
127 | |
128 | #define DEBUG_CACHE 0x0001 |
129 | #define DEBUG_DUMP 0x0002 |
130 | #define DEBUG_DEV 0x0004 |
131 | #define DEBUG_DEVNAME 0x0008 |
132 | #define DEBUG_DEVNO 0x0010 |
133 | #define DEBUG_PROBE 0x0020 |
134 | #define DEBUG_READ 0x0040 |
135 | #define DEBUG_RESOLVE 0x0080 |
136 | #define DEBUG_SAVE 0x0100 |
137 | #define DEBUG_TAG 0x0200 |
138 | #define DEBUG_INIT 0x8000 |
139 | #define DEBUG_ALL 0xFFFF |
140 | |
141 | #ifdef CONFIG_BLKID_DEBUG |
142 | #include <stdio.h> |
143 | extern int blkid_debug_mask; |
144 | #define DBG(m,x) if ((m) & blkid_debug_mask) x; |
145 | #else |
146 | #define DBG(m,x) |
147 | #endif |
148 | |
149 | #ifdef CONFIG_BLKID_DEBUG |
150 | extern void blkid_debug_dump_dev(blkid_dev dev); |
151 | extern void blkid_debug_dump_tag(blkid_tag tag); |
152 | #endif |
153 | |
154 | /* lseek.c */ |
155 | /* extern blkid_loff_t blkid_llseek(int fd, blkid_loff_t offset, int whence); */ |
156 | #ifdef CONFIG_LFS |
157 | # define blkid_llseek lseek64 |
158 | #else |
159 | # define blkid_llseek lseek |
160 | #endif |
161 | |
162 | /* read.c */ |
163 | extern void blkid_read_cache(blkid_cache cache); |
164 | |
165 | /* save.c */ |
166 | extern int blkid_flush_cache(blkid_cache cache); |
167 | |
168 | /* |
169 | * Functions to create and find a specific tag type: tag.c |
170 | */ |
171 | extern void blkid_free_tag(blkid_tag tag); |
172 | extern blkid_tag blkid_find_tag_dev(blkid_dev dev, const char *type); |
173 | extern int blkid_set_tag(blkid_dev dev, const char *name, |
174 | const char *value, const int vlength); |
175 | |
176 | /* |
177 | * Functions to create and find a specific tag type: dev.c |
178 | */ |
179 | extern blkid_dev blkid_new_dev(void); |
180 | extern void blkid_free_dev(blkid_dev dev); |
181 | |
182 | #ifdef __cplusplus |
183 | } |
184 | #endif |
185 | |
186 | #endif |