drivers/md/dm-vdo/string-utils.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright 2023 Red Hat
   4  */
   5
   6 #include "string-utils.h"
   7
   8 char *vdo_append_to_buffer(char *buffer, char *buf_end, const char *fmt, ...)
   9 {
  10         va_list args;
  11         size_t n;
  12
  13         va_start(args, fmt);
  14         n = vsnprintf(buffer, buf_end - buffer, fmt, args);
  15         if (n >= (size_t) (buf_end - buffer))
  16                 buffer = buf_end;
  17         else
  18                 buffer += n;
  19         va_end(args);
  20
  21         return buffer;
  22 }