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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 2/4] mtd: ubi: introduce barebox specific ioctl to get ubi_num
Date: Thu, 22 Sep 2016 09:49:24 +0200	[thread overview]
Message-ID: <1474530566-23625-3-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1474530566-23625-1-git-send-email-s.hauer@pengutronix.de>

Code wishing to manipulate ubi devices from outside the ubi
layer needs the ubi_num as reference. Add an ioctl to get
the ubi_num from a filedescriptor.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/mtd/ubi/barebox.c | 3 +++
 include/mtd/ubi-user.h    | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/drivers/mtd/ubi/barebox.c b/drivers/mtd/ubi/barebox.c
index 13c2a47..cb9223e 100644
--- a/drivers/mtd/ubi/barebox.c
+++ b/drivers/mtd/ubi/barebox.c
@@ -299,6 +299,9 @@ static int ubi_cdev_ioctl(struct cdev *cdev, int cmd, void *buf)
 		if (!req->bytes)
 			req->bytes = (__s64)ubi->avail_pebs * ubi->leb_size;
 		return ubi_create_volume(ubi, req);
+	case UBI_IOCGETUBINUM:
+		*(u32 *)buf = ubi->ubi_num;
+		break;
 	};
 
 	return 0;
diff --git a/include/mtd/ubi-user.h b/include/mtd/ubi-user.h
index 8c02f96..9425533 100644
--- a/include/mtd/ubi-user.h
+++ b/include/mtd/ubi-user.h
@@ -161,6 +161,8 @@
 /* Re-name volumes */
 #define UBI_IOCRNVOL _IOW(UBI_IOC_MAGIC, 3, struct ubi_rnvol_req)
 
+#define UBI_IOCGETUBINUM _IOR(UBI_IOC_MAGIC, 32, __u32)
+
 /* ioctl commands of the UBI control character device */
 
 #define UBI_CTRL_IOC_MAGIC 'o'
-- 
2.8.1


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  parent reply	other threads:[~2016-09-22  7:49 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-22  7:49 Add and use function API for UBI Sascha Hauer
2016-09-22  7:49 ` [PATCH 1/4] mtd: ubi: Add API calls to create/remove volumes Sascha Hauer
2016-09-22  7:49 ` Sascha Hauer [this message]
2016-09-22  7:49 ` [PATCH 3/4] mtd: ubi: commands: use function API to access ubi volumes Sascha Hauer
2016-09-22  7:49 ` [PATCH 4/4] mtd: ubi: remove now unused ioctls Sascha Hauer

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