Null terminate before (or after) strncpy(3)

[fio.git] / diskutil.c

diff --git a/diskutil.c b/diskutil.c
index 294d2d3d084a371fb3b1b47a4fb2087046d9f262..a1077d4001459a159c37076478fa4e04f882ecc8 100644 (file)
--- a/diskutil.c
+++ b/diskutil.c
@@ -179,6 +179,7 @@ static int get_device_numbers(char *file_name, int *maj, int *min)
                /*
                 * must be a file, open "." in that path
                 */
+               tempname[PATH_MAX - 1] = '\0';
                strncpy(tempname, file_name, PATH_MAX - 1);
                p = dirname(tempname);
                if (stat(p, &st)) {
@@ -426,6 +427,7 @@ static struct disk_util *__init_per_file_disk_util(struct thread_data *td,
                        log_err("unknown sysfs layout\n");
                        return NULL;
                }
+               tmp[PATH_MAX - 1] = '\0';
                strncpy(tmp, p, PATH_MAX - 1);
                sprintf(path, "%s", tmp);
        }