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UBI: fix nameless volumes handling

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commit 4a59c797a1 upstream.

Currently it's possible to create a volume without a name. E.g:
ubimkvol -n 32 -s 2MiB -t static /dev/ubi0 -N ""

After that vtbl_check() will always fail because it does not permit
empty strings.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Willy Tarreau <w@1wt.eu>
This commit is contained in:
Richard Weinberger 2012-01-13 15:07:40 +01:00 committed by Willy Tarreau
parent 2533c024c6
commit 2e9633af99
1 changed files with 3 additions and 0 deletions
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3
drivers/mtd/ubi/cdev.c
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@ -569,6 +569,9 @@ static int verify_mkvol_req(const struct ubi_device *ubi,
if (req->alignment != 1 && n)
goto bad;
if (!req->name[0] || !req->name_len)
goto bad;
if (req->name_len > UBI_VOL_NAME_MAX) {
err = -ENAMETOOLONG;
goto bad;