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dm ioctl: Fix compilation warning

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In retrieve_status(), when copying the target type name in the
target_type string field of struct dm_target_spec, copy at most
DM_MAX_TYPE_NAME - 1 character to avoid the compilation warning:

warning: ‘__builtin_strncpy’ specified bound 16 equals destination
size [-Wstringop-truncation]

when compiling with W-1.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Damien Le Moal 2020-07-16 13:38:14 +09:00 committed by Mike Snitzer
parent 04dc5330e5
commit 1aeb6e7cd1
1 changed files with 1 additions and 1 deletions
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2
drivers/md/dm-ioctl.c
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@ -1168,7 +1168,7 @@ static void retrieve_status(struct dm_table *table,
spec->sector_start = ti->begin;
spec->length = ti->len;
strncpy(spec->target_type, ti->type->name,
sizeof(spec->target_type));
sizeof(spec->target_type) - 1);
outptr += sizeof(struct dm_target_spec);
remaining = len - (outptr - outbuf);