1 /* $NetBSD: lvm-file.h,v 1.1.1.1 2008/12/22 00:18:13 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 */ 24 int create_temp_name(const char *dir, char *buffer, size_t len, int *fd); 25 26 /* 27 * NFS-safe rename of a temporary file to a common name, designed 28 * to avoid race conditions and not overwrite the destination if 29 * it exists. 30 */ 31 int lvm_rename(const char *old, const char *new); 32 33 /* 34 * Return 1 if path exists else return 0 35 */ 36 int path_exists(const char *path); 37 int dir_exists(const char *path); 38 39 /* 40 * Return 1 if dir is empty 41 */ 42 int is_empty_dir(const char *dir); 43 44 /* Sync directory changes */ 45 void sync_dir(const char *file); 46 47 /* fcntl locking wrappers */ 48 int fcntl_lock_file(const char *file, short lock_type, int warn_if_read_only); 49 void fcntl_unlock_file(int lockfd); 50 51 #define is_same_inode(buf1, buf2) \ 52 ((buf1).st_ino == (buf2).st_ino && \ 53 (buf1).st_dev == (buf2).st_dev) 54 55 /* 56 * Close the specified stream, taking care to detect and diagnose any write 57 * error. If there is an error, use the supplied file name in a diagnostic 58 * that is reported via log_error or log_sys_error, as appropriate. 59 * Use this function to close a stream when you've written data to it via 60 * unchecked fprintf, fputc, etc. calls. Return 0 on success, EOF on failure. 61 */ 62 int lvm_fclose(FILE *fp, const char *filename); 63 64 #endif 65