linux-kernel - [PATCH] block: send disk "change" event for rescan

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <1205094362.2366.2.camel@lov.site>
Date:	Sun, 09 Mar 2008 21:26:02 +0100
From:	Kay Sievers <kay.sievers@...y.org>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Greg KH <greg@...ah.com>, David Zeuthen <david@...ar.dk>
Subject: [PATCH] block: send disk "change" event for rescan_partitions()

From: Kay Sievers <kay.sievers@...y.org>
Subject: block: send disk "change" event for rescan_partitions()

Userspace likes to get notified that the disk may have changed, when
rescan_partitions() is called after partitioning or media change. It will
make it possible to update the state of the disk with the "change" event,
before the following partition "add" events are handled.

Cc: David Zeuthen <david@...ar.dk>
Signed-off-by: Kay Sievers <kay.sievers@...y.org>
---

diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 03f808c..6149e4b 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -473,6 +473,10 @@ int rescan_partitions(struct gendisk *disk, struct block_device *bdev)
 		return 0;
 	if (IS_ERR(state))	/* I/O error reading the partition table */
 		return -EIO;
+
+	/* tell userspace that the media / partition table may have changed */
+	kobject_uevent(&disk->dev.kobj, KOBJ_CHANGE);
+
 	for (p = 1; p < state->limit; p++) {
 		sector_t size = state->parts[p].size;
 		sector_t from = state->parts[p].from;


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/