diff options
Diffstat (limited to 'libio')
| -rw-r--r-- | libio/iofopncook.c | 38 | ||||
| -rw-r--r-- | libio/libio.h | 55 |
2 files changed, 62 insertions, 31 deletions
diff --git a/libio/iofopncook.c b/libio/iofopncook.c index 7820fa325a..f26744f39d 100644 --- a/libio/iofopncook.c +++ b/libio/iofopncook.c @@ -46,10 +46,10 @@ _IO_cookie_read (fp, buf, size) { struct _IO_cookie_file *cfile = (struct _IO_cookie_file *) fp; - if (cfile->io_functions.read == NULL) + if (cfile->__io_functions.read == NULL) return -1; - return cfile->io_functions.read (cfile->cookie, buf, size); + return cfile->__io_functions.read (cfile->__cookie, buf, size); } static _IO_ssize_t @@ -60,10 +60,10 @@ _IO_cookie_write (fp, buf, size) { struct _IO_cookie_file *cfile = (struct _IO_cookie_file *) fp; - if (cfile->io_functions.write == NULL) + if (cfile->__io_functions.write == NULL) return -1; - return cfile->io_functions.write (cfile->cookie, buf, size); + return cfile->__io_functions.write (cfile->__cookie, buf, size); } static _IO_fpos64_t @@ -73,15 +73,11 @@ _IO_cookie_seek (fp, offset, dir) int dir; { struct _IO_cookie_file *cfile = (struct _IO_cookie_file *) fp; - _IO_fpos64_t pos; - if (cfile->io_functions.seek == NULL) + if (cfile->__io_functions.seek == NULL) return _IO_pos_BAD; - pos = _IO_pos_0; - _IO_pos_adjust (pos, offset); - - return cfile->io_functions.seek (cfile->cookie, pos, dir); + return cfile->__io_functions.seek (cfile->__cookie, offset, dir); } static int @@ -90,10 +86,10 @@ _IO_cookie_close (fp) { struct _IO_cookie_file *cfile = (struct _IO_cookie_file *) fp; - if (cfile->io_functions.close == NULL) + if (cfile->__io_functions.close == NULL) return 0; - return cfile->io_functions.close (cfile->cookie); + return cfile->__io_functions.close (cfile->__cookie); } @@ -157,19 +153,19 @@ fopencookie (cookie, mode, io_functions) if (new_f == NULL) return NULL; #ifdef _IO_MTSAFE_IO - new_f->cfile.file._lock = &new_f->lock; + new_f->cfile.__file._lock = &new_f->lock; #endif - _IO_init (&new_f->cfile.file, 0); - _IO_JUMPS (&new_f->cfile.file) = &_IO_cookie_jumps; - new_f->cfile.cookie = cookie; - new_f->cfile.io_functions = io_functions; + _IO_init (&new_f->cfile.__file, 0); + _IO_JUMPS (&new_f->cfile.__file) = &_IO_cookie_jumps; + new_f->cfile.__cookie = cookie; + new_f->cfile.__io_functions = io_functions; - _IO_file_init(&new_f->cfile.file); + _IO_file_init(&new_f->cfile.__file); - new_f->cfile.file._IO_file_flags = - _IO_mask_flags (&new_f->cfile.file, read_write, + new_f->cfile.__file._IO_file_flags = + _IO_mask_flags (&new_f->cfile.__file, read_write, _IO_NO_READS+_IO_NO_WRITES+_IO_IS_APPENDING); - return &new_f->cfile.file; + return &new_f->cfile.__file; } diff --git a/libio/libio.h b/libio/libio.h index d1dcc7d07c..b4be610fbd 100644 --- a/libio/libio.h +++ b/libio/libio.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 92, 93, 94, 95, 97, 98 Free Software Foundation, Inc. +/* Copyright (C) 1991,92,93,94,95,97,98,99 Free Software Foundation, Inc. This file is part of the GNU IO Library. Written by Per Bothner <bothner@cygnus.com>. @@ -255,23 +255,58 @@ extern _IO_FILE *_IO_stderr; #endif +/* Functions to do I/O and file management for a stream. */ + +/* Read NBYTES bytes from COOKIE into a buffer pointed to by BUF. + Return number of bytes read. */ +typedef __ssize_t __io_read_fn __PMT ((__ptr_t __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, or -1 if + there is an error without writing 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 __PMT ((__ptr_t __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 __PMT ((__ptr_t __cookie, _IO_off_t __pos, int __w)); + +/* Close COOKIE. */ +typedef int __io_close_fn __PMT ((__ptr_t __cookie)); + + #ifdef _GNU_SOURCE -/* Define the user-visible type, with user-friendly member names. */ +/* 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_ssize_t (*read) __PMT ((struct _IO_FILE *, void *, _IO_ssize_t)); - _IO_ssize_t (*write) __PMT ((struct _IO_FILE *, const void *, _IO_ssize_t)); - _IO_fpos_t (*seek) __PMT ((struct _IO_FILE *, _IO_off_t, int)); - int (*close) __PMT ((struct _IO_FILE *)); + __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; /* Special file type for fopencookie function. */ struct _IO_cookie_file { - struct _IO_FILE file; - const void *vtable; - void *cookie; - _IO_cookie_io_functions_t io_functions; + struct _IO_FILE __file; + const void *__vtable; + void *__cookie; + _IO_cookie_io_functions_t __io_functions; }; #endif |