/* retry.h -- Keep retrying write system calls * $Id: retry.h,v 1.5 2005/03/05 00:37:18 dasenbro Exp $ * * Copyright (c) 1998-2003 Carnegie Mellon University. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The name "Carnegie Mellon University" must not be used to * endorse or promote products derived from this software without * prior written permission. For permission or any other legal * details, please contact * Office of Technology Transfer * Carnegie Mellon University * 5000 Forbes Avenue * Pittsburgh, PA 15213-3890 * (412) 268-4387, fax: (412) 268-7395 * tech-transfer@andrew.cmu.edu * * 4. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by Computing Services * at Carnegie Mellon University (http://www.cmu.edu/computing/)." * * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * */ #ifndef INCLUDED_RETRY_H #define INCLUDED_RETRY_H #ifndef P #ifdef __STDC__ #define P(x) x #else #define P(x) () #endif #endif #include <sys/uio.h> extern int retry_read P((int fd, char *buf, size_t nbyte)); extern int retry_write P((int fd, const char *buf, size_t nbyte)); extern int retry_writev P((int fd, struct iovec *iov, int iovcnt)); /* add a buffer 's' of length 'len' to iovec 'iov' */ #define WRITEV_ADD_TO_IOVEC(iov, num_iov, s, len) \ do { (iov)[(num_iov)].iov_base = (s); \ (iov)[(num_iov)++].iov_len = (len); } while (0) /* add a string 's' to iovec 'iov' */ #define WRITEV_ADDSTR_TO_IOVEC(iov, num_iov, s) WRITEV_ADD_TO_IOVEC(iov, num_iov, s, strlen(s)) #endif /* INCLUDED_RETRY_H */