diff options
Diffstat (limited to 'libio/libio.h')
| -rw-r--r-- | libio/libio.h | 335 |
1 files changed, 126 insertions, 209 deletions
diff --git a/libio/libio.h b/libio/libio.h index 518ffd8e44..d7f9d41cbc 100644 --- a/libio/libio.h +++ b/libio/libio.h @@ -28,10 +28,54 @@ #ifndef _IO_STDIO_H #define _IO_STDIO_H +#include <features.h> + +#if !defined _LIBC || !defined __USE_GNU || defined _ISOMAC +# error "libio.h is private to the stdio implementation" +#endif + +/* Former configuration parameters for standalone libio. Most of + these are fixed for the GNU C library. */ + +#include <bits/types.h> + +#define __need_size_t +#define __need_wchar_t +#define __need_NULL +#include <stddef.h> + +#define __need___va_list +#include <stdarg.h> + +#include <bits/types/__mbstate_t.h> +#include <bits/types/__fpos_t.h> +#include <bits/types/wint_t.h> + +#include <gconv.h> +typedef union +{ + struct __gconv_info __cd; + struct + { + struct __gconv_info __cd; + struct __gconv_step_data __data; + } __combined; +} _G_iconv_t; + +#define _G_HAVE_MMAP 1 +#define _G_IO_IO_FILE_VERSION 0x20001 + +/* This is defined by <bits/stat.h> if `st_blksize' exists. */ +#define _G_HAVE_ST_BLKSIZE defined (_STATBUF_ST_BLKSIZE) + +/* This must match the definition of BUFSIZ in stdio.h. */ +#define _G_BUFSIZ 8192 + +/* Allow ports to override the above if absolutely necessary. */ #include <_G_config.h> -/* ALL of these should be defined in _G_config.h */ -#define _IO_fpos_t _G_fpos_t -#define _IO_fpos64_t _G_fpos64_t + +#define _IO_fpos_t __fpos_t +#define _IO_fpos64_t __fpos64_t #define _IO_size_t size_t #define _IO_ssize_t __ssize_t #define _IO_off_t __off_t @@ -41,38 +85,17 @@ #define _IO_iconv_t _G_iconv_t #define _IO_HAVE_ST_BLKSIZE _G_HAVE_ST_BLKSIZE #define _IO_BUFSIZ _G_BUFSIZ -#define _IO_va_list _G_va_list +#define _IO_va_list __gnuc_va_list #define _IO_wint_t wint_t -/* This define avoids name pollution if we're using GNU stdarg.h */ -#define __need___va_list -#include <stdarg.h> -#ifdef __GNUC_VA_LIST -# undef _IO_va_list -# define _IO_va_list __gnuc_va_list -#endif /* __GNUC_VA_LIST */ - -#ifndef __P -# include <sys/cdefs.h> -#endif /*!__P*/ - +/* Backward compatibility */ +#define _STDIO_USES_IOSTREAM 1 #define _IO_UNIFIED_JUMPTABLES 1 +#define __HAVE_COLUMN 1 #ifndef EOF # define EOF (-1) #endif -#ifndef NULL -# if defined __GNUG__ && \ - (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)) -# define NULL (__null) -# else -# if !defined(__cplusplus) -# define NULL ((void*)0) -# else -# define NULL (0) -# endif -# endif -#endif #define _IOS_INPUT 1 #define _IOS_OUTPUT 2 @@ -111,15 +134,11 @@ #define _IO_FLAGS2_MMAP 1 #define _IO_FLAGS2_NOTCANCEL 2 -#ifdef _LIBC -# define _IO_FLAGS2_FORTIFY 4 -#endif +#define _IO_FLAGS2_FORTIFY 4 #define _IO_FLAGS2_USER_WBUF 8 -#ifdef _LIBC -# define _IO_FLAGS2_SCANF_STD 16 -# define _IO_FLAGS2_NOCLOSE 32 -# define _IO_FLAGS2_CLOEXEC 64 -#endif +#define _IO_FLAGS2_SCANF_STD 16 +#define _IO_FLAGS2_NOCLOSE 32 +#define _IO_FLAGS2_CLOEXEC 64 /* These are "formatting flags" matching the iostream fmtflags enum values. */ #define _IO_SKIPWS 01 @@ -141,34 +160,67 @@ #define _IO_BOOLALPHA 0200000 -struct _IO_jump_t; struct _IO_FILE; +struct _IO_jump_t; +struct _IO_FILE; +struct _IO_FILE_plus; +typedef struct _IO_FILE _IO_FILE; -/* During the build of glibc itself, _IO_lock_t will already have been - defined by internal headers. */ -#ifndef _IO_lock_t_defined -typedef void _IO_lock_t; -#endif +#include <bits/types/__FILE.h> +#include <bits/types/FILE.h> +#include <bits/types/FILE_internals.h> +#define _IO_file_flags _flags /* Compatibility. */ +#ifdef _IO_USE_OLD_IO_FILE +/* This structure is a proper prefix of the _IO_FILE structure defined + in FILE_internals.h. */ +struct _IO_FILE_old +{ + int _flags; /* High-order word is _IO_MAGIC; rest is flags. */ + + /* The following pointers correspond to the C++ streambuf protocol. */ + /* Note: Tk uses the _IO_read_ptr and _IO_read_end fields directly. */ + char* _IO_read_ptr; /* Current read pointer */ + char* _IO_read_end; /* End of get area. */ + char* _IO_read_base; /* Start of putback+get area. */ + char* _IO_write_base; /* Start of put area. */ + char* _IO_write_ptr; /* Current put pointer. */ + char* _IO_write_end; /* End of put area. */ + char* _IO_buf_base; /* Start of reserve area. */ + char* _IO_buf_end; /* End of reserve area. */ + /* The following fields are used to support backing up and undo. */ + char *_IO_save_base; /* Pointer to start of non-current get area. */ + char *_IO_backup_base; /* Pointer to first valid character of backup area */ + char *_IO_save_end; /* Pointer to end of non-current get area. */ + + struct _IO_marker *_markers; + + struct _IO_FILE *_chain; + + int _fileno; + int _flags2; + _IO_off_t _old_offset; /* This used to be _offset but it's too small. */ + + /* 1+column number of pbase(); 0 is unknown. */ + unsigned short _cur_column; + signed char _vtable_offset; + char _shortbuf[1]; + + /* char* _save_gptr; char* _save_egptr; */ + + _IO_lock_t *_lock; +}; +#endif /* A streammarker remembers a position in a buffer. */ -struct _IO_marker { +struct _IO_marker +{ struct _IO_marker *_next; struct _IO_FILE *_sbuf; /* If _pos >= 0 it points to _buf->Gbase()+_pos. FIXME comment */ /* if _pos < 0, it points to _buf->eBptr()+_pos. FIXME comment */ int _pos; -#if 0 - void set_streampos(streampos sp) { _spos = sp; } - void set_offset(int offset) { _pos = offset; _spos = (streampos)(-2); } - public: - streammarker(streambuf *sb); - ~streammarker(); - int saving() { return _spos == -2; } - int delta(streammarker&); - int delta(); -#endif }; /* This is the structure from the libstdc++ codecvt class. */ @@ -180,7 +232,6 @@ enum __codecvt_result __codecvt_noconv }; -#if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T /* The order of the elements in the following struct must match the order of the virtual functions in the libstdc++ codecvt class. */ struct _IO_codecvt @@ -235,166 +286,40 @@ struct _IO_wide_data const struct _IO_jump_t *_wide_vtable; }; -#endif - -struct _IO_FILE { - int _flags; /* High-order word is _IO_MAGIC; rest is flags. */ -#define _IO_file_flags _flags - - /* The following pointers correspond to the C++ streambuf protocol. */ - /* Note: Tk uses the _IO_read_ptr and _IO_read_end fields directly. */ - char* _IO_read_ptr; /* Current read pointer */ - char* _IO_read_end; /* End of get area. */ - char* _IO_read_base; /* Start of putback+get area. */ - char* _IO_write_base; /* Start of put area. */ - char* _IO_write_ptr; /* Current put pointer. */ - char* _IO_write_end; /* End of put area. */ - char* _IO_buf_base; /* Start of reserve area. */ - char* _IO_buf_end; /* End of reserve area. */ - /* The following fields are used to support backing up and undo. */ - char *_IO_save_base; /* Pointer to start of non-current get area. */ - char *_IO_backup_base; /* Pointer to first valid character of backup area */ - char *_IO_save_end; /* Pointer to end of non-current get area. */ - - struct _IO_marker *_markers; - - struct _IO_FILE *_chain; - - int _fileno; -#if 0 - int _blksize; -#else - int _flags2; -#endif - _IO_off_t _old_offset; /* This used to be _offset but it's too small. */ - -#define __HAVE_COLUMN /* temporary */ - /* 1+column number of pbase(); 0 is unknown. */ - unsigned short _cur_column; - signed char _vtable_offset; - char _shortbuf[1]; - - /* char* _save_gptr; char* _save_egptr; */ - - _IO_lock_t *_lock; -#ifdef _IO_USE_OLD_IO_FILE -}; -struct _IO_FILE_complete -{ - struct _IO_FILE _file; -#endif -#if defined _G_IO_IO_FILE_VERSION && _G_IO_IO_FILE_VERSION == 0x20001 - _IO_off64_t _offset; -# if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T - /* Wide character stream stuff. */ - struct _IO_codecvt *_codecvt; - struct _IO_wide_data *_wide_data; - struct _IO_FILE *_freeres_list; - void *_freeres_buf; -# else - void *__pad1; - void *__pad2; - void *__pad3; - void *__pad4; -# endif - size_t __pad5; - int _mode; - /* Make sure we don't get into trouble again. */ - char _unused2[15 * sizeof (int) - 4 * sizeof (void *) - sizeof (size_t)]; -#endif -}; - -#ifndef __cplusplus -typedef struct _IO_FILE _IO_FILE; -#endif - -struct _IO_FILE_plus; extern struct _IO_FILE_plus _IO_2_1_stdin_; extern struct _IO_FILE_plus _IO_2_1_stdout_; extern struct _IO_FILE_plus _IO_2_1_stderr_; -#ifndef _LIBC -#define _IO_stdin ((_IO_FILE*)(&_IO_2_1_stdin_)) -#define _IO_stdout ((_IO_FILE*)(&_IO_2_1_stdout_)) -#define _IO_stderr ((_IO_FILE*)(&_IO_2_1_stderr_)) -#else extern _IO_FILE *_IO_stdin attribute_hidden; extern _IO_FILE *_IO_stdout attribute_hidden; extern _IO_FILE *_IO_stderr attribute_hidden; -#endif - /* Functions to do I/O and file management for a stream. */ +#include <bits/types/cookie_io_functions_t.h> -/* Read NBYTES bytes from COOKIE into a buffer pointed to by BUF. - Return number of bytes read. */ -typedef __ssize_t __io_read_fn (void *__cookie, char *__buf, size_t __nbytes); - -/* Write N bytes pointed to by BUF to COOKIE. Write all N bytes - unless there is an error. Return number of bytes written. If - there is an error, return 0 and do not write anything. If the file - has been opened for append (__mode.__append set), then set the file - pointer to the end of the file and then do the write; if not, just - write at the current file pointer. */ -typedef __ssize_t __io_write_fn (void *__cookie, const char *__buf, - size_t __n); - -/* Move COOKIE's file position to *POS bytes from the - beginning of the file (if W is SEEK_SET), - the current position (if W is SEEK_CUR), - or the end of the file (if W is SEEK_END). - Set *POS to the new file position. - Returns zero if successful, nonzero if not. */ -typedef int __io_seek_fn (void *__cookie, _IO_off64_t *__pos, int __w); - -/* Close COOKIE. */ -typedef int __io_close_fn (void *__cookie); - - -#ifdef __USE_GNU -/* User-visible names for the above. */ -typedef __io_read_fn cookie_read_function_t; -typedef __io_write_fn cookie_write_function_t; -typedef __io_seek_fn cookie_seek_function_t; -typedef __io_close_fn cookie_close_function_t; - -/* The structure with the cookie function pointers. */ -typedef struct -{ - __io_read_fn *read; /* Read bytes. */ - __io_write_fn *write; /* Write bytes. */ - __io_seek_fn *seek; /* Seek/tell file position. */ - __io_close_fn *close; /* Close file. */ -} _IO_cookie_io_functions_t; -typedef _IO_cookie_io_functions_t cookie_io_functions_t; +/* Legacy internal names for cookie I/O types. */ +typedef cookie_read_function_t __io_read_fn; +typedef cookie_write_function_t __io_write_fn; +typedef cookie_seek_function_t __io_seek_fn; +typedef cookie_close_function_t __io_close_fn; + +typedef cookie_io_functions_t _IO_cookie_io_functions_t; struct _IO_cookie_file; /* Initialize one of those. */ extern void _IO_cookie_init (struct _IO_cookie_file *__cfile, int __read_write, void *__cookie, _IO_cookie_io_functions_t __fns); -#endif - - -#ifdef __cplusplus -extern "C" { -#endif extern int __underflow (_IO_FILE *); extern int __uflow (_IO_FILE *); extern int __overflow (_IO_FILE *, int); -#if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T extern _IO_wint_t __wunderflow (_IO_FILE *); extern _IO_wint_t __wuflow (_IO_FILE *); extern _IO_wint_t __woverflow (_IO_FILE *, _IO_wint_t); -#endif -#if __GNUC__ >= 3 -# define _IO_BE(expr, res) __builtin_expect ((expr), res) -#else -# define _IO_BE(expr, res) (expr) -#endif +#define _IO_BE(expr, res) __builtin_expect ((expr), res) #define _IO_getc_unlocked(_fp) \ (_IO_BE ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end, 0) \ @@ -408,7 +333,6 @@ extern _IO_wint_t __woverflow (_IO_FILE *, _IO_wint_t); ? __overflow (_fp, (unsigned char) (_ch)) \ : (unsigned char) (*(_fp)->_IO_write_ptr++ = (_ch))) -#if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T # define _IO_getwc_unlocked(_fp) \ (_IO_BE ((_fp)->_wide_data == NULL \ || ((_fp)->_wide_data->_IO_read_ptr \ @@ -420,7 +344,6 @@ extern _IO_wint_t __woverflow (_IO_FILE *, _IO_wint_t); >= (_fp)->_wide_data->_IO_write_end), 0) \ ? __woverflow (_fp, _wch) \ : (_IO_wint_t) (*(_fp)->_wide_data->_IO_write_ptr++ = (_wch))) -#endif #define _IO_feof_unlocked(__fp) (((__fp)->_flags & _IO_EOF_SEEN) != 0) #define _IO_ferror_unlocked(__fp) (((__fp)->_flags & _IO_ERR_SEEN) != 0) @@ -463,28 +386,28 @@ extern _IO_off64_t _IO_seekpos (_IO_FILE *, _IO_off64_t, int); extern void _IO_free_backup_area (_IO_FILE *) __THROW; -#if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T extern _IO_wint_t _IO_getwc (_IO_FILE *__fp); extern _IO_wint_t _IO_putwc (wchar_t __wc, _IO_FILE *__fp); extern int _IO_fwide (_IO_FILE *__fp, int __mode) __THROW; -# if __GNUC__ >= 2 + /* While compiling glibc we have to handle compatibility with very old versions. */ -# if defined _LIBC && defined SHARED -# include <shlib-compat.h> -# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) -# define _IO_fwide_maybe_incompatible \ +#if defined SHARED +# include <shlib-compat.h> +# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) +# define _IO_fwide_maybe_incompatible \ (__builtin_expect (&_IO_stdin_used == NULL, 0)) extern const int _IO_stdin_used; weak_extern (_IO_stdin_used); -# endif -# endif -# ifndef _IO_fwide_maybe_incompatible -# define _IO_fwide_maybe_incompatible (0) -# endif +# endif +#endif +#ifndef _IO_fwide_maybe_incompatible +# define _IO_fwide_maybe_incompatible (0) +#endif + /* A special optimized version of the function above. It optimizes the case of initializing an unoriented byte stream. */ -# define _IO_fwide(__fp, __mode) \ +#define _IO_fwide(__fp, __mode) \ ({ int __result = (__mode); \ if (__result < 0 && ! _IO_fwide_maybe_incompatible) \ { \ @@ -498,7 +421,6 @@ weak_extern (_IO_stdin_used); else \ __result = _IO_fwide (__fp, __result); \ __result; }) -# endif extern int _IO_vfwscanf (_IO_FILE * __restrict, const wchar_t * __restrict, _IO_va_list, int *__restrict); @@ -506,14 +428,9 @@ extern int _IO_vfwprintf (_IO_FILE *__restrict, const wchar_t *__restrict, _IO_va_list); extern _IO_ssize_t _IO_wpadn (_IO_FILE *, wint_t, _IO_ssize_t); extern void _IO_free_wbackup_area (_IO_FILE *) __THROW; -#endif #ifdef __LDBL_COMPAT # include <bits/libio-ldbl.h> #endif -#ifdef __cplusplus -} -#endif - #endif /* _IO_STDIO_H */ |