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https://github.com/kdave/btrfs-progs
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6da41f2a74
The close_ctree code does a check to see if the FS has changed before it does any IO. This forces the commit. Signed-off-by: Chris Mason <chris.mason@oracle.com>
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
/*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#define _XOPEN_SOURCE 500
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#define _GNU_SOURCE 1
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include "kerncompat.h"
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#include "ctree.h"
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#include "disk-io.h"
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#include "print-tree.h"
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#include "transaction.h"
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#include "list.h"
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#include "version.h"
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#include "utils.h"
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static void print_usage(void)
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{
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fprintf(stderr, "usage: btrfs-zero-log dev\n");
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fprintf(stderr, "%s\n", BTRFS_BUILD_VERSION);
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exit(1);
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}
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int main(int ac, char **av)
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{
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struct btrfs_root *root;
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struct btrfs_trans_handle *trans;
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int ret;
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if (ac != 2)
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print_usage();
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radix_tree_init();
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if((ret = check_mounted(av[1])) < 0) {
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fprintf(stderr, "Could not check mount status: %s\n", strerror(-ret));
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return ret;
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} else if(ret) {
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fprintf(stderr, "%s is currently mounted. Aborting.\n", av[1]);
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return -EBUSY;
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}
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root = open_ctree(av[1], 0, 1);
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if (root == NULL)
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return 1;
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trans = btrfs_start_transaction(root, 1);
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btrfs_set_super_log_root(&root->fs_info->super_copy, 0);
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btrfs_set_super_log_root_level(&root->fs_info->super_copy, 0);
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btrfs_commit_transaction(trans, root);
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close_ctree(root);
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return ret;
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}
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