Pavlos1

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# In this document, we outline the steps required to make a standalone flash
# image for the Ox64 that boots NuttX. We will be using the OpenBouffalo
# buildroot overlay to help us with this, but we will not be building the
# Linux kernel or rootfs.
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# We are using a patched OpenBouffalo overlay so that NuttX is loaded at
# 0x50200000 instead of 0x50000000. If you wish, you can build your own
# NuttX image whose memory map starts at 0x50000000, and then continue following

Pavlos1

/*
 * This file is a demonstration of the fact that, in POSIX, exclusive access
 * to a file is dropped once all file descriptors that point to its "open file
 * description" are closed.
 *
 * To compile:
 *     CC excl.c -o excl
 *
 * To run:
 *     ./excl <SERIAL DEVICE> both    # both fds are closed; no error thrown