io/sync.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2014 Red Hat, Inc.
   4  * All Rights Reserved.
   5  */
   6
   7 #include "platform_defs.h"
   8 #include "command.h"
   9 #include "init.h"
  10 #include "io.h"
  11
  12 static cmdinfo_t sync_cmd;
  13
  14 static int
  15 sync_f(
  16         int                     argc,
  17         char                    **argv)
  18 {
  19         /* sync can't fail */
  20         sync();
  21         return 0;
  22 }
  23
  24 #ifdef HAVE_SYNCFS
  25 static cmdinfo_t syncfs_cmd;
  26
  27 static int
  28 syncfs_f(
  29         int                     argc,
  30         char                    **argv)
  31 {
  32         if (syncfs(file->fd) < 0) {
  33                 perror("syncfs");
  34                 exitcode = 1;
  35         }
  36         return 0;
  37 }
  38 #endif
  39
  40 void
  41 sync_init(void)
  42 {
  43         sync_cmd.name = "sync";
  44         sync_cmd.cfunc = sync_f;
  45         sync_cmd.flags = CMD_NOMAP_OK | CMD_NOFILE_OK |
  46                          CMD_FOREIGN_OK | CMD_FLAG_ONESHOT;
  47         sync_cmd.oneline =
  48                 _("calls sync(2) to flush all in-core filesystem state to disk");
  49
  50         add_command(&sync_cmd);
  51
  52 #ifdef HAVE_SYNCFS
  53         syncfs_cmd.name = "syncfs";
  54         syncfs_cmd.cfunc = syncfs_f;
  55         syncfs_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
  56         syncfs_cmd.oneline =
  57                 _("calls syncfs(2) to flush all in-core filesystem state to disk");
  58
  59         add_command(&syncfs_cmd);
  60 #endif
  61 }