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[dm-devel] [PATCH] Add PS3 HDD partition table support



Hi,

i would like to submit a patch which adds the PS3 HDD partition table support to kpartx.

--- a/kpartx/Makefile    2012-09-07 00:15:06.163999993 -0800
+++ b/kpartx/Makefile    2012-09-07 00:15:25.935999993 -0800
@@ -14,7 +14,7 @@

 LDFLAGS = -ldevmapper
 OBJS = bsd.o dos.o kpartx.o solaris.o unixware.o dasd.o sun.o \
-       gpt.o mac.o crc32.o lopart.o xstrncpy.o devmapper.o
+       gpt.o mac.o ps3.o crc32.o lopart.o xstrncpy.o devmapper.o
 EXEC = kpartx

 all: $(EXEC)
--- a/kpartx/byteorder.h    2012-09-07 00:30:30.679999971 -0800
+++ b/kpartx/byteorder.h    2012-09-07 00:31:08.075999971 -0800
@@ -12,12 +12,16 @@
 #  define le16_to_cpu(x) (x)
 #  define be16_to_cpu(x) bswap_16(x)
 #  define le32_to_cpu(x) (x)
+#  define le64_to_cpu(x) (x)
 #  define be32_to_cpu(x) bswap_32(x)
+#  define be64_to_cpu(x) bswap_64(x)
 #elif BYTE_ORDER == BIG_ENDIAN
 #  define le16_to_cpu(x) bswap_16(x)
 #  define be16_to_cpu(x) (x)
 #  define le32_to_cpu(x) bswap_32(x)
+#  define le64_to_cpu(x) bswap_64(x)
 #  define be32_to_cpu(x) (x)
+#  define be64_to_cpu(x) (x)
 #else
 #  error unsupported
 #endif
--- a/kpartx/kpartx.h    2012-09-07 00:17:56.503999989 -0800
+++ b/kpartx/kpartx.h    2012-09-07 00:18:08.495999989 -0800
@@ -39,6 +39,7 @@
 extern ptreader read_dasd_pt;
 extern ptreader read_mac_pt;
 extern ptreader read_sun_pt;
+extern ptreader read_ps3_pt;

 char *getblock(int fd, unsigned int secnr);

--- a/kpartx/kpartx.c    2012-09-07 00:15:37.567999993 -0800
+++ b/kpartx/kpartx.c    2012-09-07 00:16:05.635999993 -0800
@@ -80,6 +80,7 @@
     addpts("dasd", read_dasd_pt);
     addpts("mac", read_mac_pt);
     addpts("sun", read_sun_pt);
+    addpts("ps3", read_ps3_pt);
 }

 static char short_opts[] = "rladfgvp:t:su";
--- /dev/null    2012-09-07 00:07:55.900000003 -0800
+++ b/kpartx/ps3.c    2012-09-07 00:29:52.987999973 -0800
@@ -0,0 +1,72 @@
+#include "kpartx.h"
+#include "byteorder.h"
+#include <sys/types.h>
+#include <string.h>
+
+#define SECTOR_SIZE        512
+#define MAX_ACL_ENTRIES        8
+#define MAX_PARTITIONS        8
+
+#define MAGIC1            0x0FACE0FFULL
+#define MAGIC2            0xDEADFACEULL
+
+struct p_acl_entry {
+    u_int64_t laid;
+    u_int64_t rights;
+};
+
+struct d_partition {
+    u_int64_t p_start;
+    u_int64_t p_size;
+    struct p_acl_entry p_acl[MAX_ACL_ENTRIES];
+};
+
+struct disklabel {
+    u_int8_t d_res1[16];
+    u_int64_t d_magic1;
+    u_int64_t d_magic2;
+    u_int64_t d_res2;
+    u_int64_t d_res3;
+    struct d_partition d_partitions[MAX_PARTITIONS];
+    u_int8_t d_pad[0x600 - MAX_PARTITIONS * sizeof(struct d_partition)- 0x30];
+};
+
+static int
+read_disklabel(int fd, struct disklabel *label) {
+    unsigned char *data;
+    int i;
+
+    for (i = 0; i < sizeof(struct disklabel) / SECTOR_SIZE; i++) {
+        data = (unsigned char *) getblock(fd, i);
+        if (!data)
+            return 0;
+
+        memcpy((unsigned char *) label + i * SECTOR_SIZE, data, SECTOR_SIZE);
+    }
+
+    return 1;
+}
+
+int
+read_ps3_pt(int fd, struct slice all, struct slice *sp, int ns) {
+    struct disklabel label;
+        int n = 0;
+    int i;
+
+    if (!read_disklabel(fd, &label))
+        return -1;
+
+    if ((be64_to_cpu(label.d_magic1) != MAGIC1) ||
+        (be64_to_cpu(label.d_magic2) != MAGIC2))
+        return -1;
+
+    for (i = 0; i < MAX_PARTITIONS; i++) {
+        if (label.d_partitions[i].p_start && label.d_partitions[i].p_size) {
+            sp[n].start = be64_to_cpu(label.d_partitions[i].p_start);
+            sp[n].size = be64_to_cpu(label.d_partitions[i].p_size);
+            n++;
+        }
+    }
+
+    return n;
+}


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