btrfs: fix btrfs containers

Closes #2612.
Closes #2655.

Fixes: 9de31d5a1394 ("tree-wide: s/strncpy()/strlcpy()/g")
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

diff --git a/src/lxc/storage/btrfs.c b/src/lxc/storage/btrfs.c
index af7f6eb1e54f6f3ae0c6700223932bf92cfac9b7..049074a455d6cc71fa524174bccad61a2a17ef98 100644 (file)
--- a/src/lxc/storage/btrfs.c
+++ b/src/lxc/storage/btrfs.c
@@ -366,6 +366,7 @@ int btrfs_snapshot(const char *orig, const char *new)
                goto out;
 
        memset(&args, 0, sizeof(args));
+       args.fd = fd;
        retlen = strlcpy(args.name, newname, BTRFS_SUBVOL_NAME_MAX);
        if (retlen >= BTRFS_SUBVOL_NAME_MAX)
                goto out;