memstick: add support for decoding "specfile" media attributes

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
index 00e74ea4dd51d199eef4e28cf7d8a6d18bbccad2..2381c5d7275ba48e78e73c7fe7ca082996b05fec 100644 (file)
--- a/drivers/memstick/core/mspro_block.c
+++ b/drivers/memstick/core/mspro_block.c
@@ -109,6 +109,17 @@ struct mspro_mbr {
        unsigned int  sectors_per_partition;
 } __attribute__((packed));
 
+struct mspro_specfile {
+       char           name[8];
+       char           ext[3];
+       unsigned char  attr;
+       unsigned char  reserved[10];
+       unsigned short time;
+       unsigned short date;
+       unsigned short cluster;
+       unsigned int   size;
+} __attribute__((packed));
+
 struct mspro_devinfo {
        unsigned short cylinders;
        unsigned short heads;
@@ -397,6 +408,41 @@ static ssize_t mspro_block_attr_show_mbr(struct device *dev,
        return rc;
 }
 
+static ssize_t mspro_block_attr_show_specfile(struct device *dev,
+                                             struct device_attribute *attr,
+                                             char *buffer)
+{
+       struct mspro_sys_attr *x_attr = container_of(attr,
+                                                    struct mspro_sys_attr,
+                                                    dev_attr);
+       struct mspro_specfile *x_spfile = x_attr->data;
+       char name[9], ext[4];
+       ssize_t rc = 0;
+
+       memcpy(name, x_spfile->name, 8);
+       name[8] = 0;
+       memcpy(ext, x_spfile->ext, 3);
+       ext[3] = 0;
+
+       rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
+       rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
+       rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
+                       x_spfile->attr);
+       rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
+                       x_spfile->time >> 11,
+                       (x_spfile->time >> 5) & 0x3f,
+                       (x_spfile->time & 0x1f) * 2);
+       rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
+                       (x_spfile->date >> 9) + 1980,
+                       (x_spfile->date >> 5) & 0xf,
+                       x_spfile->date & 0x1f);
+       rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
+                       x_spfile->cluster);
+       rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
+                       x_spfile->size);
+       return rc;
+}
+
 static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
                                             struct device_attribute *attr,
                                             char *buffer)
@@ -429,6 +475,9 @@ static sysfs_show_t mspro_block_attr_show(unsigned char tag)
                return mspro_block_attr_show_modelname;
        case MSPRO_BLOCK_ID_MBR:
                return mspro_block_attr_show_mbr;
+       case MSPRO_BLOCK_ID_SPECFILEVALUES1:
+       case MSPRO_BLOCK_ID_SPECFILEVALUES2:
+               return mspro_block_attr_show_specfile;
        case MSPRO_BLOCK_ID_DEVINFO:
                return mspro_block_attr_show_devinfo;
        default: