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authorCorentin Chary <corentincj@iksaif.net>2009-01-05 16:44:11 +0300
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2009-01-18 15:02:08 +0300
commit141e6ebd1b1759bd5cebf092b7216b6f1c7b4c4f (patch)
tree91b66f4b4d54fdb07084f8f5ee21c00491fe754b
parent1de9e8e70f5acc441550ca75433563d91b269bbe (diff)
downloadlinux-141e6ebd1b1759bd5cebf092b7216b6f1c7b4c4f.tar.xz
UBI: add ioctl for map operation
This patch adds ioctl for the LEB map operation (as a debugging option so far). [Re-named ioctl to make it look the same as the other one and made some minor stylistic changes. Artem Bityutskiy.] Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
-rw-r--r--drivers/mtd/ubi/cdev.c14
-rw-r--r--include/mtd/ubi-user.h15
2 files changed, 29 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index 98cf31ed0814..055e3f563c13 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -518,6 +518,20 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file,
err = ubi_wl_flush(ubi);
break;
}
+
+ /* Logical eraseblock map command */
+ case UBI_IOCEBMAP:
+ {
+ struct ubi_map_req req;
+
+ err = copy_from_user(&req, argp, sizeof(struct ubi_map_req));
+ if (err) {
+ err = -EFAULT;
+ break;
+ }
+ err = ubi_leb_map(desc, req.lnum, req.dtype);
+ break;
+ }
#endif
default:
diff --git a/include/mtd/ubi-user.h b/include/mtd/ubi-user.h
index 2dc2eb2b8e22..758574039fca 100644
--- a/include/mtd/ubi-user.h
+++ b/include/mtd/ubi-user.h
@@ -133,6 +133,9 @@
#define UBI_IOCEBER _IOW(UBI_VOL_IOC_MAGIC, 1, int32_t)
/* An atomic eraseblock change command */
#define UBI_IOCEBCH _IOW(UBI_VOL_IOC_MAGIC, 2, int32_t)
+/* Map an eraseblock, used for debugging, disabled by default */
+#define UBI_IOCEBMAP _IOW(UBI_VOL_IOC_MAGIC, 3, struct ubi_map_req)
+
/* Maximum MTD device name length supported by UBI */
#define MAX_UBI_MTD_NAME_LEN 127
@@ -319,4 +322,16 @@ struct ubi_leb_change_req {
int8_t padding[7];
} __attribute__ ((packed));
+/**
+ * struct ubi_map_req - a data structure used in map eraseblock requests.
+ * @lnum: logical eraseblock number to unmap
+ * @dtype: data type (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN)
+ * @padding: reserved for future, not used, has to be zeroed
+ */
+struct ubi_map_req {
+ int32_t lnum;
+ int8_t dtype;
+ int8_t padding[3];
+} __attribute__ ((packed));
+
#endif /* __UBI_USER_H__ */