aboutsummaryrefslogtreecommitdiff
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 00000000000..deaf5c8e8b4
--- /dev/null
+++ b/fs/isofs/rock.h
@@ -0,0 +1,119 @@
+/* These structs are used by the system-use-sharing protocol, in which the
+ Rock Ridge extensions are embedded. It is quite possible that other
+ extensions are present on the disk, and this is fine as long as they
+ all use SUSP */
+
+struct SU_SP{
+ unsigned char magic[2];
+ unsigned char skip;
+} __attribute__((packed));
+
+struct SU_CE{
+ char extent[8];
+ char offset[8];
+ char size[8];
+};
+
+struct SU_ER{
+ unsigned char len_id;
+ unsigned char len_des;
+ unsigned char len_src;
+ unsigned char ext_ver;
+ char data[0];
+} __attribute__((packed));
+
+struct RR_RR{
+ char flags[1];
+} __attribute__((packed));
+
+struct RR_PX{
+ char mode[8];
+ char n_links[8];
+ char uid[8];
+ char gid[8];
+};
+
+struct RR_PN{
+ char dev_high[8];
+ char dev_low[8];
+};
+
+
+struct SL_component{
+ unsigned char flags;
+ unsigned char len;
+ char text[0];
+} __attribute__((packed));
+
+struct RR_SL{
+ unsigned char flags;
+ struct SL_component link;
+} __attribute__((packed));
+
+struct RR_NM{
+ unsigned char flags;
+ char name[0];
+} __attribute__((packed));
+
+struct RR_CL{
+ char location[8];
+};
+
+struct RR_PL{
+ char location[8];
+};
+
+struct stamp{
+ char time[7];
+} __attribute__((packed));
+
+struct RR_TF{
+ char flags;
+ struct stamp times[0]; /* Variable number of these beasts */
+} __attribute__((packed));
+
+/* Linux-specific extension for transparent decompression */
+struct RR_ZF{
+ char algorithm[2];
+ char parms[2];
+ char real_size[8];
+};
+
+/* These are the bits and their meanings for flags in the TF structure. */
+#define TF_CREATE 1
+#define TF_MODIFY 2
+#define TF_ACCESS 4
+#define TF_ATTRIBUTES 8
+#define TF_BACKUP 16
+#define TF_EXPIRATION 32
+#define TF_EFFECTIVE 64
+#define TF_LONG_FORM 128
+
+struct rock_ridge{
+ char signature[2];
+ unsigned char len;
+ unsigned char version;
+ union{
+ struct SU_SP SP;
+ struct SU_CE CE;
+ struct SU_ER ER;
+ struct RR_RR RR;
+ struct RR_PX PX;
+ struct RR_PN PN;
+ struct RR_SL SL;
+ struct RR_NM NM;
+ struct RR_CL CL;
+ struct RR_PL PL;
+ struct RR_TF TF;
+ struct RR_ZF ZF;
+ } u;
+};
+
+#define RR_PX 1 /* POSIX attributes */
+#define RR_PN 2 /* POSIX devices */
+#define RR_SL 4 /* Symbolic link */
+#define RR_NM 8 /* Alternate Name */
+#define RR_CL 16 /* Child link */
+#define RR_PL 32 /* Parent link */
+#define RR_RE 64 /* Relocation directory */
+#define RR_TF 128 /* Timestamps */