aboutsummaryrefslogtreecommitdiffstats
path: root/fs/isofs/rock.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/isofs/rock.h')
-rw-r--r--fs/isofs/rock.h119
1 files changed, 119 insertions, 0 deletions
diff --git a/fs/isofs/rock.h b/fs/isofs/rock.h
new file mode 100644
index 000000000000..deaf5c8e8b4a
--- /dev/null
+++ b/fs/isofs/rock.h
@@ -0,0 +1,119 @@
1/* These structs are used by the system-use-sharing protocol, in which the
2 Rock Ridge extensions are embedded. It is quite possible that other
3 extensions are present on the disk, and this is fine as long as they
4 all use SUSP */
5
6struct SU_SP{
7 unsigned char magic[2];
8 unsigned char skip;
9} __attribute__((packed));
10
11struct SU_CE{
12 char extent[8];
13 char offset[8];
14 char size[8];
15};
16
17struct SU_ER{
18 unsigned char len_id;
19 unsigned char len_des;
20 unsigned char len_src;
21 unsigned char ext_ver;
22 char data[0];
23} __attribute__((packed));
24
25struct RR_RR{
26 char flags[1];
27} __attribute__((packed));
28
29struct RR_PX{
30 char mode[8];
31 char n_links[8];
32 char uid[8];
33 char gid[8];
34};
35
36struct RR_PN{
37 char dev_high[8];
38 char dev_low[8];
39};
40
41
42struct SL_component{
43 unsigned char flags;
44 unsigned char len;
45 char text[0];
46} __attribute__((packed));
47
48struct RR_SL{
49 unsigned char flags;
50 struct SL_component link;
51} __attribute__((packed));
52
53struct RR_NM{
54 unsigned char flags;
55 char name[0];
56} __attribute__((packed));
57
58struct RR_CL{
59 char location[8];
60};
61
62struct RR_PL{
63 char location[8];
64};
65
66struct stamp{
67 char time[7];
68} __attribute__((packed));
69
70struct RR_TF{
71 char flags;
72 struct stamp times[0]; /* Variable number of these beasts */
73} __attribute__((packed));
74
75/* Linux-specific extension for transparent decompression */
76struct RR_ZF{
77 char algorithm[2];
78 char parms[2];
79 char real_size[8];
80};
81
82/* These are the bits and their meanings for flags in the TF structure. */
83#define TF_CREATE 1
84#define TF_MODIFY 2
85#define TF_ACCESS 4
86#define TF_ATTRIBUTES 8
87#define TF_BACKUP 16
88#define TF_EXPIRATION 32
89#define TF_EFFECTIVE 64
90#define TF_LONG_FORM 128
91
92struct rock_ridge{
93 char signature[2];
94 unsigned char len;
95 unsigned char version;
96 union{
97 struct SU_SP SP;
98 struct SU_CE CE;
99 struct SU_ER ER;
100 struct RR_RR RR;
101 struct RR_PX PX;
102 struct RR_PN PN;
103 struct RR_SL SL;
104 struct RR_NM NM;
105 struct RR_CL CL;
106 struct RR_PL PL;
107 struct RR_TF TF;
108 struct RR_ZF ZF;
109 } u;
110};
111
112#define RR_PX 1 /* POSIX attributes */
113#define RR_PN 2 /* POSIX devices */
114#define RR_SL 4 /* Symbolic link */
115#define RR_NM 8 /* Alternate Name */
116#define RR_CL 16 /* Child link */
117#define RR_PL 32 /* Parent link */
118#define RR_RE 64 /* Relocation directory */
119#define RR_TF 128 /* Timestamps */