1/*	$NetBSD$	*/
2
3/*
4 * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
5 * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
6 *
7 * This file is part of LVM2.
8 *
9 * This copyrighted material is made available to anyone wishing to use,
10 * modify, copy, or redistribute it subject to the terms and conditions
11 * of the GNU Lesser General Public License v.2.1.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program; if not, write to the Free Software Foundation,
15 * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16 */
17
18#ifndef _LVM_FILE_H
19#define _LVM_FILE_H
20
21/*
22 * Create a temporary filename, and opens a descriptor to the file.
23 */
24int create_temp_name(const char *dir, char *buffer, size_t len, int *fd,
25		     unsigned *seed);
26
27/*
28 * NFS-safe rename of a temporary file to a common name, designed
29 * to avoid race conditions and not overwrite the destination if
30 * it exists.
31 */
32int lvm_rename(const char *old, const char *new);
33
34/*
35 * Return 1 if path exists else return 0
36 */
37int path_exists(const char *path);
38int dir_exists(const char *path);
39
40/*
41 * Return 1 if dir is empty
42 */
43int is_empty_dir(const char *dir);
44
45/* Sync directory changes */
46void sync_dir(const char *file);
47
48/* fcntl locking wrappers */
49int fcntl_lock_file(const char *file, short lock_type, int warn_if_read_only);
50void fcntl_unlock_file(int lockfd);
51
52#define is_same_inode(buf1, buf2) \
53  ((buf1).st_ino == (buf2).st_ino && \
54   (buf1).st_dev == (buf2).st_dev)
55
56/*
57 * Close the specified stream, taking care to detect and diagnose any write
58 * error.  If there is an error, use the supplied file name in a diagnostic
59 * that is reported via log_error or log_sys_error, as appropriate.
60 * Use this function to close a stream when you've written data to it via
61 * unchecked fprintf, fputc, etc. calls.  Return 0 on success, EOF on failure.
62 */
63int lvm_fclose(FILE *fp, const char *filename);
64
65#endif
66