1*86d7f5d3SJohn Marino /* $NetBSD: lvm-file.h,v 1.1.1.2 2009/02/18 11:17:17 haad Exp $ */ 2*86d7f5d3SJohn Marino 3*86d7f5d3SJohn Marino /* 4*86d7f5d3SJohn Marino * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. 5*86d7f5d3SJohn Marino * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. 6*86d7f5d3SJohn Marino * 7*86d7f5d3SJohn Marino * This file is part of LVM2. 8*86d7f5d3SJohn Marino * 9*86d7f5d3SJohn Marino * This copyrighted material is made available to anyone wishing to use, 10*86d7f5d3SJohn Marino * modify, copy, or redistribute it subject to the terms and conditions 11*86d7f5d3SJohn Marino * of the GNU Lesser General Public License v.2.1. 12*86d7f5d3SJohn Marino * 13*86d7f5d3SJohn Marino * You should have received a copy of the GNU Lesser General Public License 14*86d7f5d3SJohn Marino * along with this program; if not, write to the Free Software Foundation, 15*86d7f5d3SJohn Marino * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 16*86d7f5d3SJohn Marino */ 17*86d7f5d3SJohn Marino 18*86d7f5d3SJohn Marino #ifndef _LVM_FILE_H 19*86d7f5d3SJohn Marino #define _LVM_FILE_H 20*86d7f5d3SJohn Marino 21*86d7f5d3SJohn Marino /* 22*86d7f5d3SJohn Marino * Create a temporary filename, and opens a descriptor to the file. 23*86d7f5d3SJohn Marino */ 24*86d7f5d3SJohn Marino int create_temp_name(const char *dir, char *buffer, size_t len, int *fd, 25*86d7f5d3SJohn Marino unsigned *seed); 26*86d7f5d3SJohn Marino 27*86d7f5d3SJohn Marino /* 28*86d7f5d3SJohn Marino * NFS-safe rename of a temporary file to a common name, designed 29*86d7f5d3SJohn Marino * to avoid race conditions and not overwrite the destination if 30*86d7f5d3SJohn Marino * it exists. 31*86d7f5d3SJohn Marino */ 32*86d7f5d3SJohn Marino int lvm_rename(const char *old, const char *new); 33*86d7f5d3SJohn Marino 34*86d7f5d3SJohn Marino /* 35*86d7f5d3SJohn Marino * Return 1 if path exists else return 0 36*86d7f5d3SJohn Marino */ 37*86d7f5d3SJohn Marino int path_exists(const char *path); 38*86d7f5d3SJohn Marino int dir_exists(const char *path); 39*86d7f5d3SJohn Marino 40*86d7f5d3SJohn Marino /* 41*86d7f5d3SJohn Marino * Return 1 if dir is empty 42*86d7f5d3SJohn Marino */ 43*86d7f5d3SJohn Marino int is_empty_dir(const char *dir); 44*86d7f5d3SJohn Marino 45*86d7f5d3SJohn Marino /* Sync directory changes */ 46*86d7f5d3SJohn Marino void sync_dir(const char *file); 47*86d7f5d3SJohn Marino 48*86d7f5d3SJohn Marino /* fcntl locking wrappers */ 49*86d7f5d3SJohn Marino int fcntl_lock_file(const char *file, short lock_type, int warn_if_read_only); 50*86d7f5d3SJohn Marino void fcntl_unlock_file(int lockfd); 51*86d7f5d3SJohn Marino 52*86d7f5d3SJohn Marino #define is_same_inode(buf1, buf2) \ 53*86d7f5d3SJohn Marino ((buf1).st_ino == (buf2).st_ino && \ 54*86d7f5d3SJohn Marino (buf1).st_dev == (buf2).st_dev) 55*86d7f5d3SJohn Marino 56*86d7f5d3SJohn Marino /* 57*86d7f5d3SJohn Marino * Close the specified stream, taking care to detect and diagnose any write 58*86d7f5d3SJohn Marino * error. If there is an error, use the supplied file name in a diagnostic 59*86d7f5d3SJohn Marino * that is reported via log_error or log_sys_error, as appropriate. 60*86d7f5d3SJohn Marino * Use this function to close a stream when you've written data to it via 61*86d7f5d3SJohn Marino * unchecked fprintf, fputc, etc. calls. Return 0 on success, EOF on failure. 62*86d7f5d3SJohn Marino */ 63*86d7f5d3SJohn Marino int lvm_fclose(FILE *fp, const char *filename); 64*86d7f5d3SJohn Marino 65*86d7f5d3SJohn Marino #endif 66