lib/librte_eal/common/eal_common_proc.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <fcntl.h>
   7 #include <stdlib.h>
   8 #include <rte_eal.h>
   9
  10 #include "eal_filesystem.h"
  11 #include "eal_internal_cfg.h"
  12
  13 int
  14 rte_eal_primary_proc_alive(const char *config_file_path)
  15 {
  16         int config_fd;
  17
  18         if (config_file_path)
  19                 config_fd = open(config_file_path, O_RDONLY);
  20         else {
  21                 const char *path;
  22
  23                 path = eal_runtime_config_path();
  24                 config_fd = open(path, O_RDONLY);
  25         }
  26         if (config_fd < 0)
  27                 return 0;
  28
  29         int ret = lockf(config_fd, F_TEST, 0);
  30         close(config_fd);
  31
  32         return !!ret;
  33 }