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authorEzequiel Garcia <ezequiel@vanguardiasur.com.ar>2016-04-29 00:13:58 +0300
committerRichard Weinberger <richard@nod.at>2016-05-24 16:15:26 +0300
commit525bab71feb152bccb65054cc2bca1537e3bd2b5 (patch)
tree877c83716fd81179bac97376dbede1a368cb51d8 /Documentation
parent04974df8049fc4240d22759a91e035082ccd18b4 (diff)
downloadlinux-525bab71feb152bccb65054cc2bca1537e3bd2b5.tar.xz
UBI: Add ro-mode sysfs attribute
On serious situations, UBI may detect serious device corruption, and switch to read-only mode to protect the data and allow debugging. This commit exposes this ro-mode on sysfs, so it can be obtained by userspace tools. Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ABI/stable/sysfs-class-ubi9
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-class-ubi b/Documentation/ABI/stable/sysfs-class-ubi
index 18d471d9faea..a6b324014692 100644
--- a/Documentation/ABI/stable/sysfs-class-ubi
+++ b/Documentation/ABI/stable/sysfs-class-ubi
@@ -107,6 +107,15 @@ Contact: Artem Bityutskiy <dedekind@infradead.org>
Description:
Number of physical eraseblocks reserved for bad block handling.
+What: /sys/class/ubi/ubiX/ro_mode
+Date: April 2016
+KernelVersion: 4.7
+Contact: linux-mtd@lists.infradead.org
+Description:
+ Contains ASCII "1\n" if the read-only flag is set on this
+ device, and "0\n" if it is cleared. UBI devices mark themselves
+ as read-only when they detect an unrecoverable error.
+
What: /sys/class/ubi/ubiX/total_eraseblocks
Date: July 2006
KernelVersion: 2.6.22