From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael Kerrisk (man-pages)" Subject: Re: Typo in example code of process_vm_readv Date: Sun, 17 Aug 2014 10:53:06 -0500 Message-ID: <53F0CFE2.9040309@gmail.com> References: <53EF41F4.2030509@ylenius.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <53EF41F4.2030509-xG8NWnMrmhjR7s880joybQ@public.gmane.org> Sender: linux-man-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Ville Ylenius Cc: mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-man@vger.kernel.org On 08/16/2014 06:35 AM, Ville Ylenius wrote: > Hi, > > there is a small typo in the example code of the man page of > "process_vm_readv" > (http://man7.org/linux/man-pages/man2/process_vm_readv.2.html): > > #include > > int > main(void) > { > struct iovec local[2]; > struct iovec remote[1]; > char buf1[10]; > char buf2[10]; > ssize_t nread; > pid_t pid = 10; /* PID of remote process */ > > local[0].iov_base = buf1; > local[0].iov_len = 10; > local[1].iov_base = buf2; > local[1].iov_len = 10; > remote[0].iov_base = (void *) 0x10000; > remote[1].iov_len = 20; /**** <---- TYPO: 1 --> 0 ****/ > > nread = process_vm_readv(pid, local, 2, remote, 1, 0); > if (nread != 20) > return 1; > else > return 0; > } > > > There is no two objects in "remote"-array so program corrupts other > variables memory. > > Please change > > remote[1].iov_len = 20; > > to > > remote[0].iov_len = 20; Thanks, Ville. Fixed now. Cheers, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html