1/* $NetBSD: lvm-file.h,v 1.1.1.2 2009/02/18 11:17:17 haad Exp $ */ 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