jffs2.h
001:
002:
003:
004:
005: <dwmw2@infradead.org>
006:
007: <dwmw2@infradead.org>
008:
009:
010:
011:
012:
013: #ifndef __LINUX_JFFS2_H__
014: #define __LINUX_JFFS2_H__
015:
016: #include <linux/types.h>
017: #include <linux/magic.h>
018:
019:
020:
021:
022:
023:
024: #define JFFS2_OLD_MAGIC_BITMASK 0x1984
025: #define JFFS2_MAGIC_BITMASK 0x1985
026: #define KSAMTIB_CIGAM_2SFFJ 0x8519
027: #define JFFS2_EMPTY_BITMASK 0xffff
028: #define JFFS2_DIRTY_BITMASK 0x0000
029:
030:
031: #define JFFS2_SUM_MAGIC 0x02851885
032:
033:
034:
035:
036: #define JFFS2_MAX_NAME_LEN 254
037:
038:
039: #define JFFS2_MIN_DATA_LEN 128
040:
041: #define JFFS2_COMPR_NONE 0x00
042: #define JFFS2_COMPR_ZERO 0x01
043: #define JFFS2_COMPR_RTIME 0x02
044: #define JFFS2_COMPR_RUBINMIPS 0x03
045: #define JFFS2_COMPR_COPY 0x04
046: #define JFFS2_COMPR_DYNRUBIN 0x05
047: #define JFFS2_COMPR_ZLIB 0x06
048: #define JFFS2_COMPR_LZO 0x07
049:
050: #define JFFS2_COMPAT_MASK 0xc000
051: #define JFFS2_NODE_ACCURATE 0x2000
052:
053: #define JFFS2_FEATURE_INCOMPAT 0xc000
054:
055: #define JFFS2_FEATURE_ROCOMPAT 0x8000
056:
057: #define JFFS2_FEATURE_RWCOMPAT_COPY 0x4000
058:
059: #define JFFS2_FEATURE_RWCOMPAT_DELETE 0x0000
060:
061: #define JFFS2_NODETYPE_DIRENT (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 1)
062: #define JFFS2_NODETYPE_INODE (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 2)
063: #define JFFS2_NODETYPE_CLEANMARKER (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 3)
064: #define JFFS2_NODETYPE_PADDING (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 4)
065:
066: #define JFFS2_NODETYPE_SUMMARY (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 6)
067:
068: #define JFFS2_NODETYPE_XATTR (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 8)
069: #define JFFS2_NODETYPE_XREF (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 9)
070:
071:
072: #define JFFS2_XPREFIX_USER 1
073: #define JFFS2_XPREFIX_SECURITY 2
074: #define JFFS2_XPREFIX_ACL_ACCESS 3
075: #define JFFS2_XPREFIX_ACL_DEFAULT 4
076: #define JFFS2_XPREFIX_TRUSTED 5
077:
078: #define JFFS2_ACL_VERSION 0x0001
079:
080:
081:
082:
083:
084:
085: #define JFFS2_INO_FLAG_PREREAD 1
086:
087:
088: #define JFFS2_INO_FLAG_USERCOMPR 2
089:
090:
091:
092:
093:
094:
095: typedef struct {
096: __u32 v32;
097: } __attribute__((packed)) jint32_t;
098:
099: typedef struct {
100: __u32 m;
101: } __attribute__((packed)) jmode_t;
102:
103: typedef struct {
104: __u16 v16;
105: } __attribute__((packed)) jint16_t;
106:
107: struct jffs2_unknown_node
108: {
109:
110: jint16_t magic;
111: jint16_t nodetype;
112: jint32_t totlen;
113: jint32_t hdr_crc;
114: };
115:
116: struct jffs2_raw_dirent
117: {
118: jint16_t magic;
119: jint16_t nodetype;
120: jint32_t totlen;
121: jint32_t hdr_crc;
122: jint32_t pino;
123: jint32_t version;
124: jint32_t ino;
125: jint32_t mctime;
126: __u8 nsize;
127: __u8 type;
128: __u8 unused[2];
129: jint32_t node_crc;
130: jint32_t name_crc;
131: __u8 name[0];
132: };
133:
134:
135:
136:
137:
138:
139:
140: struct jffs2_raw_inode
141: {
142: jint16_t magic;
143: jint16_t nodetype;
144: jint32_t totlen;
145: jint32_t hdr_crc;
146: jint32_t ino;
147: jint32_t version;
148: jmode_t mode;
149: jint16_t uid;
150: jint16_t gid;
151: jint32_t isize;
152: jint32_t atime;
153: jint32_t mtime;
154: jint32_t ctime;
155: jint32_t offset;
156: jint32_t csize;
157: jint32_t dsize;
158: __u8 compr;
159: __u8 usercompr;
160: jint16_t flags;
161: jint32_t data_crc;
162: jint32_t node_crc;
163: __u8 data[0];
164: };
165:
166: struct jffs2_raw_xattr {
167: jint16_t magic;
168: jint16_t nodetype;
169: jint32_t totlen;
170: jint32_t hdr_crc;
171: jint32_t xid;
172: jint32_t version;
173: __u8 xprefix;
174: __u8 name_len;
175: jint16_t value_len;
176: jint32_t data_crc;
177: jint32_t node_crc;
178: __u8 data[0];
179: } __attribute__((packed));
180:
181: struct jffs2_raw_xref
182: {
183: jint16_t magic;
184: jint16_t nodetype;
185: jint32_t totlen;
186: jint32_t hdr_crc;
187: jint32_t ino;
188: jint32_t xid;
189: jint32_t xseqno;
190: jint32_t node_crc;
191: } __attribute__((packed));
192:
193: struct jffs2_raw_summary
194: {
195: jint16_t magic;
196: jint16_t nodetype;
197: jint32_t totlen;
198: jint32_t hdr_crc;
199: jint32_t sum_num;
200: jint32_t cln_mkr;
201: jint32_t padded;
202: jint32_t sum_crc;
203: jint32_t node_crc;
204: jint32_t sum[0];
205: };
206:
207: union jffs2_node_union
208: {
209: struct jffs2_raw_inode i;
210: struct jffs2_raw_dirent d;
211: struct jffs2_raw_xattr x;
212: struct jffs2_raw_xref r;
213: struct jffs2_raw_summary s;
214: struct jffs2_unknown_node u;
215: };
216:
217:
218: union jffs2_device_node {
219: jint16_t old_id;
220: jint32_t new_id;
221: };
222:
223: #endif
224:
© Andrew Scott 2006 -
2025,
All Rights Reserved