[PATCH 1/3] UBI: map operation via ioctl
Corentin Chary
corentincj at iksaif.net
Wed Jan 7 04:25:59 EST 2009
From bafefa6ed036173c65b7f51c6a4a4ce5004ad09f Mon Sep 17 00:00:00 2001
From: Corentin Chary <corentincj at iksaif.net>
Date: Mon, 5 Jan 2009 14:44:11 +0100
UBI: map operation via ioctl
Signed-off-by: Corentin Chary <corentincj at iksaif.net>
---
drivers/mtd/ubi/cdev.c | 13 +++++++++++++
include/mtd/ubi-user.h | 16 ++++++++++++++++
2 files changed, 29 insertions(+), 0 deletions(-)
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index 98cf31e..db47121 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -518,6 +518,19 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file,
err = ubi_wl_flush(ubi);
break;
}
+ case UBI_IOMAP:
+ {
+ 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 ccdc562..8222f12 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 */
+#define UBI_IOMAP _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 +322,17 @@ 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 change
+ * @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__ */
--
1.6.0.6
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