diff options
Diffstat (limited to 'sbdd.c')
| -rw-r--r-- | sbdd.c | 13 |
1 files changed, 8 insertions, 5 deletions
@@ -22,7 +22,6 @@ #define SBDD_NAME "sbdd" #define SBDD_BDEV_MODE (FMODE_READ | FMODE_WRITE) -#define TARGET_DEV "/dev/disk/by-id/ata-QEMU_HARDDISK_QM00001" struct sbdd { wait_queue_head_t exitwait; @@ -37,6 +36,7 @@ struct sbdd { static struct sbdd __sbdd; static int __sbdd_major = 0; +static char *__sbdd_disk = "/dev/disk/by-id/ata-QEMU_HARDDISK_QM00001"; /*static sector_t sbdd_xfer(struct bio_vec* bvec, sector_t pos, int dir) { @@ -132,11 +132,11 @@ static int sbdd_create(void) __sbdd.gd = alloc_disk(1); /* Get a handle on the device */ - pr_info("opening %s\n", TARGET_DEV); - __sbdd.bdev = blkdev_get_by_path(TARGET_DEV, SBDD_BDEV_MODE, THIS_MODULE); + pr_info("opening %s\n", __sbdd_disk); + __sbdd.bdev = blkdev_get_by_path(__sbdd_disk, SBDD_BDEV_MODE, THIS_MODULE); if (!__sbdd.bdev || IS_ERR(__sbdd.bdev)) { pr_err("blkdev_get_by_path(\"%s\") failed with %ld\n", - TARGET_DEV, PTR_ERR(__sbdd.bdev)); + __sbdd_disk, PTR_ERR(__sbdd.bdev)); return -ENOENT; } @@ -184,7 +184,7 @@ static void sbdd_delete(void) } if (__sbdd.bdev) { - pr_info("release a handle on the %s\n", TARGET_DEV); + pr_info("release a handle on the %s\n", __sbdd_disk); blkdev_put(__sbdd.bdev, SBDD_BDEV_MODE); } @@ -245,6 +245,9 @@ module_init(sbdd_init); /* Called on module unloading. Unloading module is not allowed without it. */ module_exit(sbdd_exit); +/* Set desired target disk with insmod */ +module_param_named(disk, __sbdd_disk, charp, S_IRUGO); + /* Note for the kernel: a free license module. A warning will be outputted without it. */ MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Simple Block Device Driver"); |