Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 91 insertions, 0 deletions

diff --git a/fs/partitions/sun.c b/fs/partitions/sun.c
new file mode 100644
index 000000000000..abe91ca03edf
--- /dev/null
+++ b/fs/partitions/sun.c
@@ -0,0 +1,91 @@
+/*
+ *  fs/partitions/sun.c
+ *
+ *  Code extracted from drivers/block/genhd.c
+ *
+ *  Copyright (C) 1991-1998  Linus Torvalds
+ *  Re-organised Feb 1998 Russell King
+ */
+
+#include "check.h"
+#include "sun.h"
+
+int sun_partition(struct parsed_partitions *state, struct block_device *bdev)
+{
+        int i;
+        __be16 csum;
+        int slot = 1;
+        __be16 *ush;
+        Sector sect;
+        struct sun_disklabel {
+                unsigned char info[128];   /* Informative text string */
+                unsigned char spare0[14];
+                struct sun_info {
+                        unsigned char spare1;
+                        unsigned char id;
+                        unsigned char spare2;
+                        unsigned char flags;
+                } infos[8];
+                unsigned char spare[246];  /* Boot information etc. */
+                __be16 rspeed;     /* Disk rotational speed */
+                __be16 pcylcount;  /* Physical cylinder count */
+                __be16 sparecyl;   /* extra sects per cylinder */
+                unsigned char spare2[4];   /* More magic... */
+                __be16 ilfact;     /* Interleave factor */
+                __be16 ncyl;       /* Data cylinder count */
+                __be16 nacyl;      /* Alt. cylinder count */
+                __be16 ntrks;      /* Tracks per cylinder */
+                __be16 nsect;      /* Sectors per track */
+                unsigned char spare3[4];   /* Even more magic... */
+                struct sun_partition {
+                        __be32 start_cylinder;
+                        __be32 num_sectors;
+                } partitions[8];
+                __be16 magic;      /* Magic number */
+                __be16 csum;       /* Label xor'd checksum */
+        } * label;              
+        struct sun_partition *p;
+        unsigned long spc;
+        char b[BDEVNAME_SIZE];
+
+        label = (struct sun_disklabel *)read_dev_sector(bdev, 0, &sect);
+        if (!label)
+                return -1;
+
+        p = label->partitions;
+        if (be16_to_cpu(label->magic) != SUN_LABEL_MAGIC) {
+/*              printk(KERN_INFO "Dev %s Sun disklabel: bad magic %04x\n",
+                       bdevname(bdev, b), be16_to_cpu(label->magic)); */
+                put_dev_sector(sect);
+                return 0;
+        }
+        /* Look at the checksum */
+        ush = ((__be16 *) (label+1)) - 1;
+        for (csum = 0; ush >= ((__be16 *) label);)
+                csum ^= *ush--;
+        if (csum) {
+                printk("Dev %s Sun disklabel: Csum bad, label corrupted\n",
+                       bdevname(bdev, b));
+                put_dev_sector(sect);
+                return 0;
+        }
+
+        /* All Sun disks have 8 partition entries */
+        spc = be16_to_cpu(label->ntrks) * be16_to_cpu(label->nsect);
+        for (i = 0; i < 8; i++, p++) {
+                unsigned long st_sector;
+                int num_sectors;
+
+                st_sector = be32_to_cpu(p->start_cylinder) * spc;
+                num_sectors = be32_to_cpu(p->num_sectors);
+                if (num_sectors) {
+                        put_partition(state, slot, st_sector, num_sectors);
+                        if (label->infos[i].id == LINUX_RAID_PARTITION)
+                                state->parts[slot].flags = 1;
+                }
+                slot++;
+        }
+        printk("\n");
+        put_dev_sector(sect);
+        return 1;
+}