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Diffstat (limited to 'apps/examples/nxflat/tests/errno/errno.c')
-rw-r--r-- | apps/examples/nxflat/tests/errno/errno.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/apps/examples/nxflat/tests/errno/errno.c b/apps/examples/nxflat/tests/errno/errno.c new file mode 100644 index 000000000..08a15808a --- /dev/null +++ b/apps/examples/nxflat/tests/errno/errno.c @@ -0,0 +1,83 @@ +/**************************************************************************** + * examples/nxflat/tests/errno/errno.c + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * 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. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +static const char g_nonexistent[] = "aflav-sautga-ay"; + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +int main(int argc, char **argv) +{ + FILE *test_stream; + + /* Try using stdout and stderr explicitly. These are global variables + * exported from the base code. + */ + + fprintf(stdout, "Hello, World on stdout\n"); + fprintf(stderr, "Hello, World on stderr\n"); + + /* Try opening a non-existent file using buffered IO. */ + + test_stream = fopen(g_nonexistent, "r"); + if (test_stream) + { + fprintf(stderr, "Hmm... Delete \"%s\" and try this again\n", + g_nonexistent); + exit(1); + } + + /* Now print the errno on stderr. Errno is also a global + * variable exported by the base code. + */ + + fprintf(stderr, "We failed to open \"%s!\" errno is %d\n", + g_nonexistent, errno); + + return 0; +} |