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Editing: apr_file_info.h
/* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef APR_FILE_INFO_H #define APR_FILE_INFO_H /** * @file apr_file_info.h * @brief APR File Information */ #include "apr.h" #include "apr_user.h" #include "apr_pools.h" #include "apr_tables.h" #include "apr_time.h" #include "apr_errno.h" #if APR_HAVE_SYS_UIO_H #include <sys/uio.h> #endif #ifdef __cplusplus extern "C" { #endif /* __cplusplus */ /** * @defgroup apr_file_info File Information * @ingroup APR * @{ */ /* Many applications use the type member to determine the * existance of a file or initialization of the file info, * so the APR_NOFILE value must be distinct from APR_UNKFILE. */ /** apr_filetype_e values for the filetype member of the * apr_file_info_t structure * @warning Not all of the filetypes below can be determined. * For example, a given platform might not correctly report * a socket descriptor as APR_SOCK if that type isn't * well-identified on that platform. In such cases where * a filetype exists but cannot be described by the recognized * flags below, the filetype will be APR_UNKFILE. If the * filetype member is not determined, the type will be APR_NOFILE. */ typedef enum { APR_NOFILE = 0, /**< no file type determined */ APR_REG, /**< a regular file */ APR_DIR, /**< a directory */ APR_CHR, /**< a character device */ APR_BLK, /**< a block device */ APR_PIPE, /**< a FIFO / pipe */ APR_LNK, /**< a symbolic link */ APR_SOCK, /**< a [unix domain] socket */ APR_UNKFILE = 127 /**< a file of some other unknown type */ } apr_filetype_e; /** * @defgroup apr_file_permissions File Permissions flags * @{ */ #define APR_FPROT_USETID 0x8000 /**< Set user id */ #define APR_FPROT_UREAD 0x0400 /**< Read by user */ #define APR_FPROT_UWRITE 0x0200 /**< Write by user */ #define APR_FPROT_UEXECUTE 0x0100 /**< Execute by user */ #define APR_FPROT_GSETID 0x4000 /**< Set group id */ #define APR_FPROT_GREAD 0x0040 /**< Read by group */ #define APR_FPROT_GWRITE 0x0020 /**< Write by group */ #define APR_FPROT_GEXECUTE 0x0010 /**< Execute by group */ #define APR_FPROT_WSTICKY 0x2000 /**< Sticky bit */ #define APR_FPROT_WREAD 0x0004 /**< Read by others */ #define APR_FPROT_WWRITE 0x0002 /**< Write by others */ #define APR_FPROT_WEXECUTE 0x0001 /**< Execute by others */ #define APR_FPROT_OS_DEFAULT 0x0FFF /**< use OS's default permissions */ /* additional permission flags for apr_file_copy and apr_file_append */ #define APR_FPROT_FILE_SOURCE_PERMS 0x1000 /**< Copy source file's permissions */ /* backcompat */ #define APR_USETID APR_FPROT_USETID /**< @deprecated @see APR_FPROT_USETID */ #define APR_UREAD APR_FPROT_UREAD /**< @deprecated @see APR_FPROT_UREAD */ #define APR_UWRITE APR_FPROT_UWRITE /**< @deprecated @see APR_FPROT_UWRITE */ #define APR_UEXECUTE APR_FPROT_UEXECUTE /**< @deprecated @see APR_FPROT_UEXECUTE */ #define APR_GSETID APR_FPROT_GSETID /**< @deprecated @see APR_FPROT_GSETID */ #define APR_GREAD APR_FPROT_GREAD /**< @deprecated @see APR_FPROT_GREAD */ #define APR_GWRITE APR_FPROT_GWRITE /**< @deprecated @see APR_FPROT_GWRITE */ #define APR_GEXECUTE APR_FPROT_GEXECUTE /**< @deprecated @see APR_FPROT_GEXECUTE */ #define APR_WSTICKY APR_FPROT_WSTICKY /**< @deprecated @see APR_FPROT_WSTICKY */ #define APR_WREAD APR_FPROT_WREAD /**< @deprecated @see APR_FPROT_WREAD */ #define APR_WWRITE APR_FPROT_WWRITE /**< @deprecated @see APR_FPROT_WWRITE */ #define APR_WEXECUTE APR_FPROT_WEXECUTE /**< @deprecated @see APR_FPROT_WEXECUTE */ #define APR_OS_DEFAULT APR_FPROT_OS_DEFAULT /**< @deprecated @see APR_FPROT_OS_DEFAULT */ #define APR_FILE_SOURCE_PERMS APR_FPROT_FILE_SOURCE_PERMS /**< @deprecated @see APR_FPROT_FILE_SOURCE_PERMS */ /** @} */ /** * Structure for referencing directories. */ typedef struct apr_dir_t apr_dir_t; /** * Structure for determining file permissions. */ typedef apr_int32_t apr_fileperms_t; #if (defined WIN32) || (defined NETWARE) /** * Structure for determining the device the file is on. */ typedef apr_uint32_t apr_dev_t; #else /** * Structure for determining the device the file is on. */ typedef dev_t apr_dev_t; #endif /** * @defgroup apr_file_stat Stat Functions * @{ */ /** file info structure */ typedef struct apr_finfo_t apr_finfo_t; #define APR_FINFO_LINK 0x00000001 /**< Stat the link not the file itself if it is a link */ #define APR_FINFO_MTIME 0x00000010 /**< Modification Time */ #define APR_FINFO_CTIME 0x00000020 /**< Creation or inode-changed time */ #define APR_FINFO_ATIME 0x00000040 /**< Access Time */ #define APR_FINFO_SIZE 0x00000100 /**< Size of the file */ #define APR_FINFO_CSIZE 0x00000200 /**< Storage size consumed by the file */ #define APR_FINFO_DEV 0x00001000 /**< Device */ #define APR_FINFO_INODE 0x00002000 /**< Inode */ #define APR_FINFO_NLINK 0x00004000 /**< Number of links */ #define APR_FINFO_TYPE 0x00008000 /**< Type */ #define APR_FINFO_USER 0x00010000 /**< User */ #define APR_FINFO_GROUP 0x00020000 /**< Group */ #define APR_FINFO_UPROT 0x00100000 /**< User protection bits */ #define APR_FINFO_GPROT 0x00200000 /**< Group protection bits */ #define APR_FINFO_WPROT 0x00400000 /**< World protection bits */ #define APR_FINFO_ICASE 0x01000000 /**< if dev is case insensitive */ #define APR_FINFO_NAME 0x02000000 /**< ->name in proper case */ #define APR_FINFO_MIN 0x00008170 /**< type, mtime, ctime, atime, size */ #define APR_FINFO_IDENT 0x00003000 /**< dev and inode */ #define APR_FINFO_OWNER 0x00030000 /**< user and group */ #define APR_FINFO_PROT 0x00700000 /**< all protections */ #define APR_FINFO_NORM 0x0073b170 /**< an atomic unix apr_stat() */ #define APR_FINFO_DIRENT 0x02000000 /**< an atomic unix apr_dir_read() */ /** * The file information structure. This is analogous to the POSIX * stat structure. */ struct apr_finfo_t { /** Allocates memory and closes lingering handles in the specified pool */ apr_pool_t *pool; /** The bitmask describing valid fields of this apr_finfo_t structure * including all available 'wanted' fields and potentially more */ apr_int32_t valid; /** The access permissions of the file. Mimics Unix access rights. */ apr_fileperms_t protection; /** The type of file. One of APR_REG, APR_DIR, APR_CHR, APR_BLK, APR_PIPE, * APR_LNK or APR_SOCK. If the type is undetermined, the value is APR_NOFILE. * If the type cannot be determined, the value is APR_UNKFILE. */ apr_filetype_e filetype; /** The user id that owns the file */ apr_uid_t user; /** The group id that owns the file */ apr_gid_t group; /** The inode of the file. */ apr_ino_t inode; /** The id of the device the file is on. */ apr_dev_t device; /** The number of hard links to the file. */ apr_int32_t nlink; /** The size of the file */ apr_off_t size; /** The storage size consumed by the file */ apr_off_t csize; /** The time the file was last accessed */ apr_time_t atime; /** The time the file was last modified */ apr_time_t mtime; /** The time the file was created, or the inode was last changed */ apr_time_t ctime; /** The pathname of the file (possibly unrooted) */ const char *fname; /** The file's name (no path) in filesystem case */ const char *name; /** Unused */ struct apr_file_t *filehand; }; /** * get the specified file's stats. The file is specified by filename, * instead of using a pre-opened file. * @param finfo Where to store the information about the file, which is * never touched if the call fails. * @param fname The name of the file to stat. * @param wanted The desired apr_finfo_t fields, as a bit flag of APR_FINFO_ values * @param pool the pool to use to allocate the new file. * * @note If @c APR_INCOMPLETE is returned all the fields in @a finfo may * not be filled in, and you need to check the @c finfo->valid bitmask * to verify that what you're looking for is there. */ APR_DECLARE(apr_status_t) apr_stat(apr_finfo_t *finfo, const char *fname, apr_int32_t wanted, apr_pool_t *pool); /** @} */ /** * @defgroup apr_dir Directory Manipulation Functions * @{ */ /** * Open the specified directory. * @param new_dir The opened directory descriptor. * @param dirname The full path to the directory (use / on all systems) * @param pool The pool to use. */ APR_DECLARE(apr_status_t) apr_dir_open(apr_dir_t **new_dir, const char *dirname, apr_pool_t *pool); /** * close the specified directory. * @param thedir the directory descriptor to close. */ APR_DECLARE(apr_status_t) apr_dir_close(apr_dir_t *thedir); /** * Read the next entry from the specified directory. * @param finfo the file info structure and filled in by apr_dir_read * @param wanted The desired apr_finfo_t fields, as a bit flag of APR_FINFO_ values * @param thedir the directory descriptor returned from apr_dir_open * @remark No ordering is guaranteed for the entries read. * * @note If @c APR_INCOMPLETE is returned all the fields in @a finfo may * not be filled in, and you need to check the @c finfo->valid bitmask * to verify that what you're looking for is there. When no more * entries are available, APR_ENOENT is returned. */ APR_DECLARE(apr_status_t) apr_dir_read(apr_finfo_t *finfo, apr_int32_t wanted, apr_dir_t *thedir); /** * Rewind the directory to the first entry. * @param thedir the directory descriptor to rewind. */ APR_DECLARE(apr_status_t) apr_dir_rewind(apr_dir_t *thedir); /** @} */ /** * @defgroup apr_filepath Filepath Manipulation Functions * @{ */ /** Cause apr_filepath_merge to fail if addpath is above rootpath * @bug in APR 0.9 and 1.x, this flag's behavior is undefined * if the rootpath is NULL or empty. In APR 2.0 this should be * changed to imply NOTABSOLUTE if the rootpath is NULL or empty. */ #define APR_FILEPATH_NOTABOVEROOT 0x01 /** internal: Only meaningful with APR_FILEPATH_NOTABOVEROOT */ #define APR_FILEPATH_SECUREROOTTEST 0x02 /** Cause apr_filepath_merge to fail if addpath is above rootpath, * even given a rootpath /foo/bar and an addpath ../bar/bash */ #define APR_FILEPATH_SECUREROOT 0x03 /** Fail apr_filepath_merge if the merged path is relative */ #define APR_FILEPATH_NOTRELATIVE 0x04 /** Fail apr_filepath_merge if the merged path is absolute */ #define APR_FILEPATH_NOTABSOLUTE 0x08 /** Return the file system's native path format (e.g. path delimiters * of ':' on MacOS9, '\' on Win32, etc.) */ #define APR_FILEPATH_NATIVE 0x10 /** Resolve the true case of existing directories and file elements * of addpath, (resolving any aliases on Win32) and append a proper * trailing slash if a directory */ #define APR_FILEPATH_TRUENAME 0x20 /** * Extract the rootpath from the given filepath * @param rootpath the root file path returned with APR_SUCCESS or APR_EINCOMPLETE * @param filepath the pathname to parse for its root component * @param flags the desired rules to apply, from * <PRE> * APR_FILEPATH_NATIVE Use native path separators (e.g. '\' on Win32) * APR_FILEPATH_TRUENAME Tests that the root exists, and makes it proper * </PRE> * @param p the pool to allocate the new path string from * @remark on return, filepath points to the first non-root character in the * given filepath. In the simplest example, given a filepath of "/foo", * returns the rootpath of "/" and filepath points at "foo". This is far * more complex on other platforms, which will canonicalize the root form * to a consistant format, given the APR_FILEPATH_TRUENAME flag, and also * test for the validity of that root (e.g., that a drive d:/ or network * share //machine/foovol/). * The function returns APR_ERELATIVE if filepath isn't rooted (an * error), APR_EINCOMPLETE if the root path is ambiguous (but potentially * legitimate, e.g. "/" on Windows is incomplete because it doesn't specify * the drive letter), or APR_EBADPATH if the root is simply invalid. * APR_SUCCESS is returned if filepath is an absolute path. */ APR_DECLARE(apr_status_t) apr_filepath_root(const char **rootpath, const char **filepath, apr_int32_t flags, apr_pool_t *p); /** * Merge additional file path onto the previously processed rootpath * @param newpath the merged paths returned * @param rootpath the root file path (NULL uses the current working path) * @param addpath the path to add to the root path * @param flags the desired APR_FILEPATH_ rules to apply when merging * @param p the pool to allocate the new path string from * @remark if the flag APR_FILEPATH_TRUENAME is given, and the addpath * contains wildcard characters ('*', '?') on platforms that don't support * such characters within filenames, the paths will be merged, but the * result code will be APR_EPATHWILD, and all further segments will not * reflect the true filenames including the wildcard and following segments. */ APR_DECLARE(apr_status_t) apr_filepath_merge(char **newpath, const char *rootpath, const char *addpath, apr_int32_t flags, apr_pool_t *p); /** * Split a search path into separate components * @param pathelts the returned components of the search path * @param liststr the search path (e.g., <tt>getenv("PATH")</tt>) * @param p the pool to allocate the array and path components from * @remark empty path components do not become part of @a pathelts. * @remark the path separator in @a liststr is system specific; * e.g., ':' on Unix, ';' on Windows, etc. */ APR_DECLARE(apr_status_t) apr_filepath_list_split(apr_array_header_t **pathelts, const char *liststr, apr_pool_t *p); /** * Merge a list of search path components into a single search path * @param liststr the returned search path; may be NULL if @a pathelts is empty * @param pathelts the components of the search path * @param p the pool to allocate the search path from * @remark emtpy strings in the source array are ignored. * @remark the path separator in @a liststr is system specific; * e.g., ':' on Unix, ';' on Windows, etc. */ APR_DECLARE(apr_status_t) apr_filepath_list_merge(char **liststr, apr_array_header_t *pathelts, apr_pool_t *p); /** * Return the default file path (for relative file names) * @param path the default path string returned * @param flags optional flag APR_FILEPATH_NATIVE to retrieve the * default file path in os-native format. * @param p the pool to allocate the default path string from */ APR_DECLARE(apr_status_t) apr_filepath_get(char **path, apr_int32_t flags, apr_pool_t *p); /** * Set the default file path (for relative file names) * @param path the default path returned * @param p the pool to allocate any working storage */ APR_DECLARE(apr_status_t) apr_filepath_set(const char *path, apr_pool_t *p); /** The FilePath character encoding is unknown */ #define APR_FILEPATH_ENCODING_UNKNOWN 0 /** The FilePath character encoding is locale-dependent */ #define APR_FILEPATH_ENCODING_LOCALE 1 /** The FilePath character encoding is UTF-8 */ #define APR_FILEPATH_ENCODING_UTF8 2 /** * Determine the encoding used internally by the FilePath functions * @param style points to a variable which receives the encoding style flag * @param p the pool to allocate any working storage * @remark Use apr_os_locale_encoding() and/or apr_os_default_encoding() * to get the name of the path encoding if it's not UTF-8. */ APR_DECLARE(apr_status_t) apr_filepath_encoding(int *style, apr_pool_t *p); /** @} */ /** @} */ #ifdef __cplusplus } #endif #endif /* ! APR_FILE_INFO_H */
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