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201 lines
6.1 KiB
201 lines
6.1 KiB
/*
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Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef MY_IO_INCLUDED
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#define MY_IO_INCLUDED 1
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/**
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@file include/my_io.h
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Common \#defines and includes for file and socket I/O.
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*/
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#include <mysql/components/services/my_io_bits.h>
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#ifdef _WIN32
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/* Define missing access() modes. */
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#define F_OK 0
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#define W_OK 2
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#define R_OK 4 /* Test for read permission. */
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/* Define missing file locking constants. */
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#define F_RDLCK 1
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#define F_WRLCK 2
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#define F_UNLCK 3
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#define O_NONBLOCK 1 /* For emulation of fcntl() */
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/*
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SHUT_RDWR is called SD_BOTH in windows and
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is defined to 2 in winsock2.h
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#define SD_BOTH 0x02
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*/
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#define SHUT_RDWR 0x02
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#endif // _WIN32
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/* file create flags */
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#ifdef _WIN32
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/* Only for my_fopen() - _O_BINARY is set by default for my_open() */
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#define MY_FOPEN_BINARY _O_BINARY
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#else
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#define MY_FOPEN_BINARY 0 /* Ignore on non-Windows */
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#endif
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#ifdef _WIN32
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#define O_NOFOLLOW 0 /* Ignore on Windows */
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#endif
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/* additional file share flags for win32 */
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#ifdef _WIN32
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#define _SH_DENYRWD 0x110 /* deny read/write mode & delete */
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#define _SH_DENYWRD 0x120 /* deny write mode & delete */
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#define _SH_DENYRDD 0x130 /* deny read mode & delete */
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#define _SH_DENYDEL 0x140 /* deny delete only */
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#endif /* _WIN32 */
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/* General constants */
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#define FN_LEN 256 /* Max file name len */
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#define FN_HEADLEN 253 /* Max length of filepart of file name */
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#define FN_EXTLEN 20 /* Max length of extension (part of FN_LEN) */
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#define FN_REFLEN 512 /* Max length of full path-name */
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#define FN_REFLEN_SE 4000 /* Max length of full path-name in SE */
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#define FN_EXTCHAR '.'
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#define FN_HOMELIB '~' /* ~/ is used as abbrev for home dir */
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#define FN_CURLIB '.' /* ./ is used as abbrev for current dir */
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#define FN_PARENTDIR ".." /* Parent directory; Must be a string */
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#ifdef _WIN32
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#define FN_LIBCHAR '\\'
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#define FN_LIBCHAR2 '/'
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#define FN_DIRSEP "/\\" /* Valid directory separators */
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#define FN_EXEEXT ".exe"
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#define FN_SOEXT ".dll"
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#define FN_ROOTDIR "\\"
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#define FN_DEVCHAR ':'
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#define FN_NETWORK_DRIVES /* Uses \\ to indicate network drives */
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#else
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#define FN_LIBCHAR '/'
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/*
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FN_LIBCHAR2 is not defined on !Windows. Use is_directory_separator().
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*/
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#define FN_DIRSEP "/" /* Valid directory separators */
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#define FN_EXEEXT ""
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#define FN_SOEXT ".so"
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#define FN_ROOTDIR "/"
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#endif
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static inline int is_directory_separator(char c) {
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#ifdef _WIN32
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return c == FN_LIBCHAR || c == FN_LIBCHAR2;
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#else
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return c == FN_LIBCHAR;
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#endif
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}
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/*
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MY_FILE_MIN is Windows speciality and is used to quickly detect
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the mismatch of CRT and mysys file IO usage on Windows at runtime.
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CRT file descriptors can be in the range 0-2047, whereas descriptors
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returned by my_open() will start with 2048. If a file descriptor with value
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less then MY_FILE_MIN is passed to mysys IO function, chances are it stemms
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from open()/fileno() and not my_open()/my_fileno.
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For Posix, mysys functions are light wrappers around libc, and MY_FILE_MIN
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is logically 0.
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*/
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#ifdef _WIN32
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#define MY_FILE_MIN 2048
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#else
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#define MY_FILE_MIN 0
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#endif
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/*
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MY_NFILE is the default size of my_file_info array.
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It is larger on Windows, because it all file handles are stored in
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my_file_info Default size is 16384 and this should be enough for most cases.If
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it is not enough, --max-open-files with larger value can be used.
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For Posix , my_file_info array is only used to store filenames for
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error reporting and its size is not a limitation for number of open files.
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*/
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#ifdef _WIN32
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#define MY_NFILE (16384 + MY_FILE_MIN)
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#else
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#define MY_NFILE 64
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#endif
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#define OS_FILE_LIMIT UINT_MAX
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/*
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Io buffer size; Must be a power of 2 and a multiple of 512. May be
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smaller what the disk page size. This influences the speed of the
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isam btree library. eg to big to slow.
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*/
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#define IO_SIZE 4096
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#if defined(_WIN32)
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#define socket_errno WSAGetLastError()
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#define SOCKET_EINTR WSAEINTR
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#define SOCKET_EAGAIN WSAEINPROGRESS
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#define SOCKET_EWOULDBLOCK WSAEWOULDBLOCK
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#define SOCKET_EADDRINUSE WSAEADDRINUSE
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#define SOCKET_ETIMEDOUT WSAETIMEDOUT
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#define SOCKET_ECONNRESET WSAECONNRESET
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#define SOCKET_ENFILE ENFILE
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#define SOCKET_EMFILE EMFILE
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#else /* Unix */
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#define socket_errno errno
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#define closesocket(A) close(A)
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#define SOCKET_EINTR EINTR
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#define SOCKET_EAGAIN EAGAIN
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#define SOCKET_EWOULDBLOCK EWOULDBLOCK
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#define SOCKET_EADDRINUSE EADDRINUSE
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#define SOCKET_ETIMEDOUT ETIMEDOUT
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#define SOCKET_ECONNRESET ECONNRESET
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#define SOCKET_ENFILE ENFILE
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#define SOCKET_EMFILE EMFILE
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#endif
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#ifndef _WIN32
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#define INVALID_SOCKET -1
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#endif /* _WIN32 */
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/* File permissions */
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#define USER_READ (1L << 0)
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#define USER_WRITE (1L << 1)
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#define USER_EXECUTE (1L << 2)
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#define GROUP_READ (1L << 3)
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#define GROUP_WRITE (1L << 4)
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#define GROUP_EXECUTE (1L << 5)
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#define OTHERS_READ (1L << 6)
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#define OTHERS_WRITE (1L << 7)
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#define OTHERS_EXECUTE (1L << 8)
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#define USER_RWX USER_READ | USER_WRITE | USER_EXECUTE
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#define GROUP_RWX GROUP_READ | GROUP_WRITE | GROUP_EXECUTE
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#define OTHERS_RWX OTHERS_READ | OTHERS_WRITE | OTHERS_EXECUTE
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#endif // MY_IO_INCLUDED
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