1 files changed, 111 insertions, 0 deletions
diff --git a/xenolinux-2.4.22-sparse/arch/xeno/drivers/block/info.c b/xenolinux-2.4.22-sparse/arch/xeno/drivers/block/info.c
new file mode 100644
index 0000000000..e9bf618a62
--- /dev/null
+++ b/xenolinux-2.4.22-sparse/arch/xeno/drivers/block/info.c
@@ -0,0 +1,111 @@
+
+#include "xl_block.h"
+#include <linux/blk.h>
+#include <linux/cdrom.h>
+#include <linux/genhd.h>
+#include <linux/seq_file.h>
+#include <asm/xeno_proc.h>
+
+static struct proc_dir_entry *info_pde;
+
+static void *info_start(struct seq_file *s, loff_t *ppos)
+{
+    struct gendisk *gp;
+    loff_t pos = *ppos;
+    int major;
+
+    if ( pos == 0 )
+        seq_puts(s, "major minor start_sector  num_sectors name\n\n");
+
+    for ( major = 0; major < MAX_BLKDEV; major++ )
+    {
+        if ( (gp = get_gendisk(MKDEV(major, 0))) != 0 )
+            if ( !pos-- )
+                return gp;
+    }
+
+    return NULL;
+}
+
+static void *info_next(struct seq_file *s, void *v, loff_t *ppos)
+{
+    ++*ppos;
+    return info_start(s, ppos);
+}
+
+static void info_stop(struct seq_file *s, void *v)
+{
+}
+
+static int info_show(struct seq_file *s, void *v)
+{
+    struct gendisk *gp = v;
+    char buf[64];
+    int n, disk;
+    
+    for ( n = 0; n < (gp->nr_real << gp->minor_shift); n++ ) 
+    {
+        disk = n >> gp->minor_shift;
+        if ( gp->part[n].nr_sects != 0 ) 
+        {
+            seq_printf(s, "%5d %5d %12ld %12ld %s\n",
+                       gp->major, n,
+                       gp->part[n].start_sect,
+                       gp->part[n].nr_sects,
+                       disk_name(gp, n, buf));
+        }
+        else if ( ((disk << gp->minor_shift) == n) &&
+                  ((((xl_disk_t *)gp->real_devices)[disk].capacity) != 0) )
+        {
+            seq_printf(s, "%5d %5d %12d %12ld %s\n",
+                       gp->major, n, 0, 
+                       ((xl_disk_t *)gp->real_devices)[disk].capacity,
+                       disk_name(gp, n, buf));
+        }
+    }
+    
+    return 0;
+}
+
+static struct seq_operations info_op = {
+    .start          = info_start,
+    .next           = info_next,
+    .stop           = info_stop,
+    .show           = info_show,
+};
+
+static int info_open(struct inode *inode, struct file *file)
+{
+    return seq_open(file, &info_op);
+}
+
+static struct file_operations proc_info_operations = 
+{
+    open:           info_open,
+    read:           seq_read,
+    llseek:         seq_lseek,
+    release:        seq_release,
+};
+
+int __init info_init(void)
+{
+    info_pde = create_xeno_proc_entry("blkdev_info", 0444);
+    if ( info_pde == NULL )
+        panic ("Couldn't create /proc/xeno/blkdev_info");
+
+    info_pde->data       = NULL;
+    info_pde->proc_fops  = &proc_info_operations;
+    info_pde->owner      = THIS_MODULE;
+
+    return 0;
+}
+
+static void __exit info_exit(void)
+{
+    if ( info_pde == NULL ) return;
+    remove_xeno_proc_entry("blkdev_info");
+    info_pde = NULL;
+}
+
+module_init(info_init);
+module_exit(info_exit);