fdl.h (2202B)
1 /* $Id: //depot/blt/include/blt/fdl.h#3 $ 2 ** 3 ** Copyright 1999 Sidney Cammeresi 4 ** All rights reserved. 5 ** 6 ** Redistribution and use in source and binary forms, with or without 7 ** modification, are permitted provided that the following conditions 8 ** are met: 9 ** 1. Redistributions of source code must retain the above copyright 10 ** notice, this list of conditions, and the following disclaimer. 11 ** 2. Redistributions in binary form must reproduce the above copyright 12 ** notice, this list of conditions, and the following disclaimer in the 13 ** documentation and/or other materials provided with the distribution. 14 ** 3. The name of the author may not be used to endorse or promote products 15 ** derived from this software without specific prior written permission. 16 ** 17 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _BLT_FDL_H_ 30 #define _BLT_FDL_H_ 31 32 #include <blt/types.h> 33 34 #define MAX_FD_HANDLERS 64 35 #define MAX_FDS 256 36 37 typedef struct 38 { 39 const char *name; 40 41 int (*read) (void *cookie, void *buf, size_t count); 42 int (*write) (void *cookie, const void *buf, size_t count); 43 int (*ioctl) (void *cookie, unsigned long request, char *argp); 44 int (*close) (void *cookie); 45 } fdl_type; 46 47 typedef struct 48 { 49 fdl_type *imp; 50 void *cookie; 51 } __filedesc; 52 53 54 #ifdef __cplusplus 55 extern "C" { 56 #endif 57 void __libc_init_fdl (void); 58 void __libc_fini_fdl (void); 59 int _fdl_alloc_descriptor (fdl_type *handler, void *cookie); 60 void _fdl_free_descriptor (int desc); 61 #ifdef __cplusplus 62 } 63 #endif 64 65 #endif 66