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authorXiongfeng Wang <xiongfeng.wang@linaro.org>2018-01-08 19:51:22 +0800
committerDavid Sterba <dsterba@suse.com>2018-01-22 16:08:21 +0100
commit6670d4c2d9b7d352cbf90cd18c516bb6444acf34 (patch)
tree774ef2a1c3266b19e4be07829686c4f2129bae90 /fs/btrfs
parent6f794e3c5c8f8fdd3b5bb20d9ded894e685b5bbe (diff)
downloadlinux-6670d4c2d9b7d352cbf90cd18c516bb6444acf34.tar.bz2
btrfs: use correct string length in DEV_INFO ioctl
gcc-8 reports: fs/btrfs/ioctl.c: In function 'btrfs_ioctl': ./include/linux/string.h:245:9: warning: '__builtin_strncpy' specified bound 1024 equals destination size [-Wstringop-truncation] We need one less byte or call strlcpy() to make it a nul-terminated string. This is done on the next line anyway, but we want to avoid the warning. Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org> Reviewed-by: David Sterba <dsterba@suse.com> [ update changelog ] Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/ioctl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index f6d4d5810cc1..f573cad72b7e 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2798,7 +2798,7 @@ static long btrfs_ioctl_dev_info(struct btrfs_fs_info *fs_info,
struct rcu_string *name;
name = rcu_dereference(dev->name);
- strncpy(di_args->path, name->str, sizeof(di_args->path));
+ strncpy(di_args->path, name->str, sizeof(di_args->path) - 1);
di_args->path[sizeof(di_args->path) - 1] = 0;
} else {
di_args->path[0] = '\0';