0x1100 +laji?u@?p bѿ \q_I|+-/* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, you can obtain one at https://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. */ #ifndef ISC_FILE_H #define ISC_FILE_H 1 /*! \file isc/file.h */ #include #include #include #include #include ISC_LANG_BEGINDECLS isc_result_t isc_file_settime(const char *file, isc_time_t *time); isc_result_t isc_file_mode(const char *file, mode_t *modep); isc_result_t isc_file_getmodtime(const char *file, isc_time_t *time); /*!< * \brief Get the time of last modification of a file. * * Notes: *\li The time that is set is relative to the (OS-specific) epoch, as are * all isc_time_t structures. * * Requires: *\li file != NULL. *\li time != NULL. * * Ensures: *\li If the file could not be accessed, 'time' is unchanged. * * Returns: *\li #ISC_R_SUCCESS * Success. *\li #ISC_R_NOTFOUND * No such file exists. *\li #ISC_R_INVALIDFILE * The path specified was not usable by the operating system. *\li #ISC_R_NOPERM * The file's metainformation could not be retrieved because * permission was denied to some part of the file's path. *\li #ISC_R_IOERROR * Hardware error interacting with the filesystem. *\li #ISC_R_UNEXPECTED * Something totally unexpected happened. * */ isc_result_t isc_file_mktemplate(const char *path, char *buf, size_t buflen); /*!< * \brief Generate a template string suitable for use with * isc_file_openunique(). * * Notes: *\li This function is intended to make creating temporary files * portable between different operating systems. * *\li The path is prepended to an implementation-defined string and * placed into buf. The string has no path characters in it, * and its maximum length is 14 characters plus a NUL. Thus * buflen should be at least strlen(path) + 15 characters or * an error will be returned. * * Requires: *\li buf != NULL. * * Ensures: *\li If result == #ISC_R_SUCCESS: * buf contains a string suitable for use as the template argument * to isc_file_openunique(). * *\li If result != #ISC_R_SUCCESS: * buf is unchanged. * * Returns: *\li #ISC_R_SUCCESS Success. *\li #ISC_R_NOSPACE buflen indicates buf is too small for the catenation * of the path with the internal template string. */ isc_result_t isc_file_openunique(char *templet, FILE **fp); isc_result_t isc_file_openuniqueprivate(char *templet, FILE **fp); isc_result_t isc_file_openuniquemode(char *templet, int mode, FILE **fp); isc_result_t isc_file_bopenunique(char *templet, FILE **fp); isc_result_t isc_file_bopenuniqueprivate(char *templet, FILE **fp); isc_result_t isc_file_bopenuniquemode(char *templet, int mode, FILE **fp); /*!< * \brief Create and open a file with a unique name based on 'templet'. * isc_file_bopen*() open the file in binary mode in Windows. * isc_file_open*() open the file in text mode in Windows. * * Notes: *\li 'template' is a reserved work in C++. If you want to complain * about the spelling of 'templet', first look it up in the * Merriam-Webster English dictionary. (http://www.m-w.com/) * *\li This function works by using the template to generate file names. * The template must be a writable string, as it is modified in place. * Trailing X characters in the file name (full file name on Unix, * basename on Win32 -- eg, tmp-XXXXXX vs XXXXXX.tmp, respectively) * are replaced with ASCII characters until a non-existent filename * is found. If the template does not include pathname information, * the files in the working directory of the program are searched. * *\li isc_file_mktemplate is a good, portable way to get a template. * * Requires: *\li 'fp' is non-NULL and '*fp' is NULL. * *\li 'template' is non-NULL, and