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freeswitch/libs/apr/include/apr_file_info.h
Michael Jerris 0488a5109a add apr to in tree libs 
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3733 d0543943-73ff-0310-b7d9-9358b9ac24b2
2006-12-19 19:58:23 +00:00

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/* 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 inode of the file.
*/
typedef apr_uint64_t apr_ino_t;
/**
* Structure for determining the device the file is on.
*/
typedef apr_uint32_t apr_dev_t;
#else
/** The inode of the file. */
typedef ino_t apr_ino_t;
/**
* 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;
/** The file's handle, if accessed (can be submitted to apr_duphandle) */
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.
*/
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 */
#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 seperators (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 ambigious (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 componenta 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 @c apr_os_locale_encoding and/or @c 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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