mirror of
https://github.com/apache/nuttx.git
synced 2026-05-22 05:42:05 +08:00
Add perror()
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5061 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
+42
-2
@@ -23,7 +23,7 @@ config NUNGET_CHARS
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---help---
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Number of characters that can be buffered by ungetc() (Only if NFILE_STREAMS > 0)
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config CONFIG_LIB_HOMEDIR
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config LIB_HOMEDIR
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string "Home directory"
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default "/"
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depends on !DISABLE_ENVIRON
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@@ -51,6 +51,46 @@ config LIBC_FLOATINGPOINT
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By default, floating point
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support in printf, sscanf, etc. is disabled.
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config LIBC_STRERROR
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bool "Enable strerror"
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default n
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---help---
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strerror() is useful because it decodes 'errno' values into a human readable
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strings. But it can also require a lot of memory. If this option is selected,
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strerror() will still exist in the build but it will not decode error values.
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This option should be used by other logic to decide if it should use strerror()
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or not. For example, the NSH application will not use strerror() if this
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option is not selected; perror() will not use strerror() is this option is not
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selected (see also NSH_STRERROR).
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config LIBC_STRERROR_SHORT
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bool "Use short error descriptions in strerror()"
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default n
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depends on LIBC_STRERROR
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---help---
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If this option is selected, then strerror() will use a shortened string when
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it decodes the error. Specifically, strerror() is simply use the string that
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is the common name for the error. For example, the 'errno' value of 2 will
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produce the string "No such file or directory" is LIBC_STRERROR_SHORT
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is not defined but the string "ENOENT" is LIBC_STRERROR_SHORT is defined.
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config LIBC_PERROR_STDOUT
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bool "perror() to stdout"
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default n
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---help---
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POSIX requires that perror() provide its output on stderr. This option may
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be defined, however, to provide perror() output that is serialized with
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other stdout messages.
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config LIBC_PERROR_DEVNAME
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string "perror() to device"
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default "/dev/console"
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depends on !LIBC_PERROR_STDOUT
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---help---
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Another non-standard option is to provide perror() output to a logging device
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or file. LIBC_PERROR_DEVNAME may be defined to be any write-able,
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character device (or file).
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config ARCH_LOWPUTC
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bool "Low-level console output"
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default "y"
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@@ -68,7 +108,7 @@ config ENABLE_ARCH_OPTIMIZED_FUN
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The architecture may provide custom versions of certain
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standard header files:
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config ARCH_MATH_H, CONFIG_ARCH_STDBOOL_H, CONFIG_ARCH_STDINT_H
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config ARCH_MATH_H, ARCH_STDBOOL_H, ARCH_STDINT_H
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if ENABLE_ARCH_OPTIMIZED_FUN
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config ARCH_MEMCPY
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@@ -0,0 +1,130 @@
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/****************************************************************************
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* lib/stdio/lib_perror.c
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <errno.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* POSIX requires that perror provide its output on stderr. This option may
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* be defined, however, to provide perror output that is serialized with
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* other stdout messages.
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*/
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#ifdef CONFIG_LIBC_PERROR_STDOUT
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# define PERROR_STREAM stdout
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# undef CONFIG_LIBC_PERROR_DEVNAME
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#endif
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/* Another non-standard option is to provide perror output to a logging
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* device or file. CONFIG_LIBC_PERROR_DEVNAME may be defined to be any write-
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* able, character device (or file).
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*/
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#ifndef CONFIG_LIBC_PERROR_DEVNAME
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# define PERROR_STREAM stderr
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#else
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# define PERROR_STREAM perror_stream;
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#endif
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/****************************************************************************
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* Private Type Declarations
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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#ifndef CONFIG_LIBC_PERROR_DEVNAME
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static FILE *perror_stream;
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: perror
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****************************************************************************/
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void perror(FAR const char *s)
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{
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/* If we are using a custom output device (something other than
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* /dev/console), then make sure that the device has been opened.
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*/
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#ifdef CONFIG_LIBC_PERROR_DEVNAME
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if (!perror_stream)
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{
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/* Not yet.. open it now */
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perror_stream = fopen(CONFIG_LIBC_PERROR_DEVNAME, "w");
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if (!perror_stream)
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{
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/* Oops... we couldn't open the device */
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return;
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}
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}
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#endif
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/* If strerror() is not enabled, then just print the error number */
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#ifdef CONFIG_LIBC_STRERROR
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(void)fprintf(PERROR_STREAM, "%s: %s\n", s, strerror(errno));
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#else
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(void)fprintf(PERROR_STREAM, "%s: Error %d\n", s, errno);
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#endif
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}
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+141
-3
@@ -1,8 +1,8 @@
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/************************************************************************
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* lib/string/lib_strerror.c
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*
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* Copyright (C) 2007, 2009, 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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* Copyright (C) 2007, 2009, 2011-2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@@ -61,6 +61,8 @@ struct errno_strmap_s
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* Private Data
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************************************************************************/
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#ifdef CONFIG_LIBC_STRERROR
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/* This table maps all error numbers to descriptive strings.
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* The only assumption that the code makes with regard to this
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* this table is that it is ordered by error number.
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@@ -70,6 +72,8 @@ struct errno_strmap_s
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* strings.
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*/
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#ifndef CONFIG_LIBC_STRERROR_SHORT
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static const struct errno_strmap_s g_errnomap[] =
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{
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{ EPERM, EPERM_STR },
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@@ -196,8 +200,140 @@ static const struct errno_strmap_s g_errnomap[] =
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{ EMEDIUMTYPE, EMEDIUMTYPE_STR }
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};
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#else /* CONFIG_LIBC_STRERROR_SHORT */
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static const struct errno_strmap_s g_errnomap[] =
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{
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{ EPERM, "EPERM" },
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{ ENOENT, "ENOENT" },
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{ ESRCH, "ESRCH" },
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{ EINTR, "EINTR" },
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{ EIO, "EIO" },
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{ ENXIO, "ENXIO" },
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{ E2BIG, "E2BIG" },
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{ ENOEXEC, "ENOEXEC" },
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{ EBADF, "EBADF" },
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{ ECHILD, "ECHILD" },
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{ EAGAIN, "EAGAIN" },
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{ ENOMEM, "ENOMEM" },
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{ EACCES, "EACCES" },
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{ EFAULT, "EFAULT" },
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{ ENOTBLK, "ENOTBLK" },
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{ EBUSY, "EBUSY" },
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{ EEXIST, "EEXIST" },
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{ EXDEV, "EXDEV" },
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{ ENODEV, "ENODEV" },
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{ ENOTDIR, "ENOTDIR" },
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{ EISDIR, "EISDIR" },
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{ EINVAL, "EINVAL" },
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{ ENFILE, "ENFILE" },
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{ EMFILE, "EMFILE" },
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{ ENOTTY, "ENOTTY" },
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{ ETXTBSY, "ETXTBSY" },
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{ EFBIG, "EFBIG" },
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{ ENOSPC, "ENOSPC" },
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{ ESPIPE, "ESPIPE" },
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{ EROFS, "EROFS" },
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{ EMLINK, "EMLINK" },
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{ EPIPE, "EPIPE" },
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{ EDOM, "EDOM" },
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{ ERANGE, "ERANGE" },
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{ EDEADLK, "EDEADLK" },
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{ ENAMETOOLONG, "ENAMETOOLONG" },
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{ ENOLCK, "ENOLCK" },
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{ ENOSYS, "ENOSYS" },
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{ ENOTEMPTY, "ENOTEMPTY" },
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{ ELOOP, "ELOOP" },
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{ ENOMSG, "ENOMSG" },
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{ EIDRM, "EIDRM" },
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{ ECHRNG, "ECHRNG" },
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{ EL2NSYNC, "EL2NSYNC" },
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{ EL3HLT, "EL3HLT" },
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{ EL3RST, "EL3RST" },
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{ EL3RST, "EL3RST" },
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{ EUNATCH, "EUNATCH" },
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{ ENOCSI, "ENOCSI" },
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{ EL2HLT, "EL2HLT" },
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{ EBADE, "EBADE" },
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{ EBADR, "EBADR" },
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{ EXFULL, "EXFULL" },
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{ ENOANO, "ENOANO" },
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{ EBADRQC, "EBADRQC" },
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{ EBADSLT, "EBADSLT" },
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{ EBFONT, "EBFONT" },
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{ ENOSTR, "ENOSTR" },
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{ ENODATA, "ENODATA" },
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{ ETIME, "ETIME" },
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{ ENOSR, "ENOSR" },
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{ ENONET, "ENONET" },
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{ ENOPKG, "ENOPKG" },
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{ EREMOTE, "EREMOTE" },
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{ ENOLINK, "ENOLINK" },
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{ EADV, "EADV" },
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{ ESRMNT, "ESRMNT" },
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{ ECOMM, "ECOMM" },
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{ EPROTO, "EPROTO" },
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{ EMULTIHOP, "EMULTIHOP" },
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{ EDOTDOT, "EDOTDOT" },
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{ EBADMSG, "EBADMSG" },
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{ EOVERFLOW, "EOVERFLOW" },
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{ ENOTUNIQ, "ENOTUNIQ" },
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{ EBADFD, "EBADFD" },
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{ EREMCHG, "EREMCHG" },
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{ ELIBACC, "ELIBACC" },
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{ ELIBBAD, "ELIBBAD" },
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{ ELIBSCN, "ELIBSCN" },
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{ ELIBMAX, "ELIBMAX" },
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{ ELIBEXEC, "ELIBEXEC" },
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{ EILSEQ, "EILSEQ" },
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{ ERESTART, "ERESTART" },
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{ ESTRPIPE, "ESTRPIPE" },
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{ EUSERS, "EUSERS" },
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{ ENOTSOCK, "ENOTSOCK" },
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{ EDESTADDRREQ, "EDESTADDRREQ" },
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{ EMSGSIZE, "EMSGSIZE" },
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{ EPROTOTYPE, "EPROTOTYPE" },
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{ ENOPROTOOPT, "ENOPROTOOPT" },
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{ EPROTONOSUPPORT, "EPROTONOSUPPORT" },
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{ ESOCKTNOSUPPORT, "ESOCKTNOSUPPORT" },
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{ EOPNOTSUPP, "EOPNOTSUPP" },
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{ EPFNOSUPPORT, "EPFNOSUPPORT" },
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{ EAFNOSUPPORT, "EAFNOSUPPORT" },
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{ EADDRINUSE, "EADDRINUSE" },
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{ EADDRNOTAVAIL, "EADDRNOTAVAIL" },
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{ ENETDOWN, "ENETDOWN" },
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{ ENETUNREACH, "ENETUNREACH" },
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{ ENETRESET, "ENETRESET" },
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{ ECONNABORTED, "ECONNABORTED" },
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{ ECONNRESET, "ECONNRESET" },
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{ ENOBUFS, "ENOBUFS" },
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{ EISCONN, "EISCONN" },
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{ ENOTCONN, "ENOTCONN" },
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{ ESHUTDOWN, "ESHUTDOWN" },
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{ ETOOMANYREFS, "ETOOMANYREFS" },
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{ ETIMEDOUT, "ETIMEDOUT" },
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{ ECONNREFUSED, "ECONNREFUSED" },
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{ EHOSTDOWN, "EHOSTDOWN" },
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{ EHOSTUNREACH, "EHOSTUNREACH" },
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{ EALREADY, "EALREADY" },
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{ EINPROGRESS, "EINPROGRESS" },
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{ ESTALE, "ESTALE" },
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{ EUCLEAN, "EUCLEAN" },
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{ ENOTNAM, "ENOTNAM" },
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{ ENAVAIL, "ENAVAIL" },
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{ EISNAM, "EISNAM" },
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{ EREMOTEIO, "EREMOTEIO" },
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{ EDQUOT, "EDQUOT" },
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{ ENOMEDIUM, "ENOMEDIUM" },
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{ EMEDIUMTYPE, "EMEDIUMTYPE" }
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};
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#endif /* CONFIG_LIBC_STRERROR_SHORT */
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#define NERRNO_STRS (sizeof(g_errnomap) / sizeof(struct errno_strmap_s))
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#endif /* CONFIG_LIBC_STRERROR */
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/************************************************************************
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* Private Functions
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************************************************************************/
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@@ -210,8 +346,9 @@ static const struct errno_strmap_s g_errnomap[] =
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* Name: strerror
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************************************************************************/
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const char *strerror(int errnum)
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FAR const char *strerror(int errnum)
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{
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#ifdef CONFIG_LIBC_STRERROR
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int ndxlow = 0;
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int ndxhi = NERRNO_STRS - 1;
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int ndxmid;
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@@ -233,5 +370,6 @@ const char *strerror(int errnum)
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}
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}
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while (ndxlow <= ndxhi);
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#endif
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return "Unknown error";
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}
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