libmount: (veritydev) use asprintf to build string

Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>

diff --git a/libmount/src/hook_veritydev.c b/libmount/src/hook_veritydev.c
index e4805a4e73b813f643622c2d8e9cd5ea252d36ae..6a9e64469a71443773dbd8dba45b0684ebaba325 100644 (file)
--- a/libmount/src/hook_veritydev.c
+++ b/libmount/src/hook_veritydev.c
@@ -554,15 +554,10 @@ static int setup_veritydev(       struct libmnt_context *cxt,
        }
 
        if (!rc) {
-               hsd->devname = calloc(strlen(mapper_device)
-                                       + sizeof(_PATH_DEV_MAPPER) + 2, sizeof(char));
-               if (!hsd->devname)
+               if (asprintf(&hsd->devname, _PATH_DEV_MAPPER "/%s", mapper_device) == -1)
                        rc = -ENOMEM;
-               else {
-                       strcat(hsd->devname, _PATH_DEV_MAPPER "/");
-                       strcat(hsd->devname, mapper_device);
+               else
                        rc = mnt_fs_set_source(cxt->fs, hsd->devname);
-               }
        }
 
 done: