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Diffstat (limited to 'nuttx/libc/stdio/lib_perror.c')
-rw-r--r-- | nuttx/libc/stdio/lib_perror.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/nuttx/libc/stdio/lib_perror.c b/nuttx/libc/stdio/lib_perror.c new file mode 100644 index 000000000..181898329 --- /dev/null +++ b/nuttx/libc/stdio/lib_perror.c @@ -0,0 +1,99 @@ +/**************************************************************************** + * libc/stdio/lib_perror.c + * + * Copyright (C) 2012 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 <nuttx/config.h> + +#include <stdio.h> +#include <errno.h> + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/* POSIX requires that perror provide its output on stderr. This option may + * be defined, however, to provide perror output that is serialized with + * other stdout messages. + */ + +#ifdef CONFIG_LIBC_PERROR_STDOUT +# define PERROR_STREAM stdout +#else +# define PERROR_STREAM stderr +#endif + +/**************************************************************************** + * Private Type Declarations + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: perror + ****************************************************************************/ + +void perror(FAR const char *s) +{ + + /* If strerror() is not enabled, then just print the error number */ + +#ifdef CONFIG_LIBC_STRERROR + (void)fprintf(PERROR_STREAM, "%s: %s\n", s, strerror(errno)); +#else + (void)fprintf(PERROR_STREAM, "%s: Error %d\n", s, errno); +#endif +} + |