1 /* 2 * Copyright (C) 1998,1999 Uwe Ohse 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 17 * 18 * As a special exception this source may be used as part of the 19 * SRS project by CORE/Computer Service Langenbach 20 * regardless of the copyright they choose. 21 * 22 * Contact: uwe@ohse.de 23 */ 24 #ifndef UOIO_H 25 #define UOIO_H 26 27 /* AUTOCONF: AC_CHECK_TYPE(ssize_t,int) */ 28 #include "config.h" 29 #include "uostr.h" 30 #include <sys/uio.h> 31 32 typedef struct 33 { 34 int fd; 35 union { 36 /* this is a union to get rid of warnings ... */ 37 ssize_t (*r) P__((int fd,void *buf,size_t size)); 38 ssize_t (*w) P__((int fd,const void *buf,size_t size)); 39 } op; 40 ssize_t (*opv) P__((int fd, const struct iovec * vector, int count)); 41 char *buf; 42 size_t buflen; 43 size_t bufsize; 44 char *rstart; 45 int eof; 46 int oerr; 47 unsigned int timeout; /* in seconds, user-settable */ 48 } uoio_t; 49 50 void uoio_assign_r P__((uoio_t *,int fd, 51 ssize_t (*op)(int,void *,size_t), 52 ssize_t (*opv)(int fd, const struct iovec * vector, int count))); 53 void uoio_assign_w P__((uoio_t *,int fd, 54 ssize_t (*op)(int,const void *,size_t), 55 ssize_t (*opv)(int fd, const struct iovec * vector, int count))); 56 void uoio_destroy P__((uoio_t *)); /* will not flush output */ 57 ssize_t uoio_getdelim_zc P__((uoio_t * u, char **s, int delim)); 58 ssize_t uoio_getdelim_uostr P__((uoio_t * u, uostr_t *s, int delim)); 59 ssize_t uoio_getchar P__((uoio_t * u, char *s)); 60 ssize_t uoio_getmem P__((uoio_t * u, void *vs, size_t len)); 61 62 63 /* how many bytes are still in the buffer? */ 64 #define UOIO_PENDING(u) ((u)->buflen-((u)->rstart-(u)->buf)) 65 66 /* flush output */ 67 ssize_t uoio_flush P__((uoio_t *u)); 68 /* return -1 on error or len */ 69 ssize_t uoio_write_mem P__((uoio_t *u, const void *buf,size_t len)); 70 ssize_t uoio_write_cstr P__((uoio_t *u,const char *s)); 71 ssize_t uoio_write_cstrmulti P__((uoio_t *u,...)); 72 ssize_t uoio_write_char P__((uoio_t *u,char c)); /* of no real use ... */ 73 ssize_t uoio_write_uostr P__((uoio_t *u,uostr_t *s)); 74 ssize_t uoio_write_v P__((uoio_t *u,struct iovec *iov, int count)); 75 76 #endif 77