X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=fd.c;h=46be22891e93f2f094f3118daef5780c067b4cea;hp=23b89b5d35a19f0641ca0e506c1be34c2e4eab49;hb=45b4e8b0ba410fd929a341a9bf84b1ac3995d734;hpb=e7b6f442b4edeaeeb885d171df8267fe15aff472 diff --git a/fd.c b/fd.c index 23b89b5d..46be2289 100644 --- a/fd.c +++ b/fd.c @@ -1,20 +1,23 @@ /* - * Copyright (C) 2006-2009 Andre Noll + * Copyright (C) 2006-2010 Andre Noll * * Licensed under the GPL v2. For licencing details see COPYING. */ /** \file fd.c Helper functions for file descriptor handling. */ +#include #include #include #include #include #include +#include #include "para.h" #include "error.h" #include "string.h" + /** * Write a buffer to a file descriptor, re-write on short writes. * @@ -79,6 +82,27 @@ int write_nonblock(int fd, const char *buf, size_t len, return written; } +/** + * Simple wrapper for readv(). + * + * \param fd The file descriptor to read from. + * \param iov Scatter/gather array used in readv(). + * \param iovcnt Number of elements in \a iov. + * + * \return A negative error code on errors, the return value of the underlying + * call to readv() otherwise. + * + * \sa readv(2). + */ +int para_readv(int fd, struct iovec *iov, int iovcnt) +{ + int ret = readv(fd, iov, iovcnt); + + if (ret < 0) + return -ERRNO_TO_PARA_ERROR(errno); + return ret; +} + /** * Check whether a file exists. * @@ -419,7 +443,7 @@ out: * \param start The start address of the memory mapping. * \param length The size of the mapping. * - * \return Positive on success, \p -E_MUNMAP on errors. + * \return Standard. * * \sa munmap(2), mmap_full_file(). */