u-boot/include/errno.h

/*
 * Copyright (C) 2014 Samsung Electronics
 * Przemyslaw Marczak <p.marczak@samsung.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#ifndef _ERRNO_H
#define _ERRNO_H

#include <asm-generic/errno.h>

extern int errno;

#define __set_errno(val) do { errno = val; } while (0)

#ifdef CONFIG_ERRNO_STR
const char *errno_str(int errno);
#else
static inline const char *errno_str(int errno)
{
	return 0;
}
#endif
#endif /* _ERRNO_H */
errno: Add copyright header and header guard Bring in a copyright for this file from cmd/pmic.c since this file was submitted by the same author at around the same time. Also fix the missing header guard. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com> 2016-05-09 06:55:17 +08:00			`/*`
			`* Copyright (C) 2014 Samsung Electronics`
			`* Przemyslaw Marczak <p.marczak@samsung.com>`
			`*`
			`* SPDX-License-Identifier: GPL-2.0+`
			`*/`
Add basic errno support. Needed for hash table support; probably useful in a lot of other places as well. Signed-off-by: Wolfgang Denk <wd@denx.de> 2010-06-12 06:19:46 +08:00			`#ifndef _ERRNO_H`
errno: Add copyright header and header guard Bring in a copyright for this file from cmd/pmic.c since this file was submitted by the same author at around the same time. Also fix the missing header guard. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com> 2016-05-09 06:55:17 +08:00			`#define _ERRNO_H`
Add basic errno support. Needed for hash table support; probably useful in a lot of other places as well. Signed-off-by: Wolfgang Denk <wd@denx.de> 2010-06-12 06:19:46 +08:00
			`#include <asm-generic/errno.h>`

			`extern int errno;`

			`#define __set_errno(val) do { errno = val; } while (0)`

lib: errno: introduce errno_str(): returns errno related message The functions error's numbers are standarized - but the error messages are not. The errors are often handled with unclear error messages, so why not use an errno standarized messages. Advantages: - This could decrease the binary size. - Appended with a detailed information, the error message will be clear. This commit introduces new function: - const char *errno_to_str(int errno) The functions returns a pointer to the errno corresponding text message: - if errno is null or positive number - a pointer to "Success" message - if errno is negative - a pointer to errno related message Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Reviewed-by: Tom Rini <trini@ti.com> 2014-10-09 04:48:37 +08:00			`#ifdef CONFIG_ERRNO_STR`
			`const char *errno_str(int errno);`
errno: Allow errno_str() to be used without CONFIG_ERRNO_STR The pmic framework uses errno_str() and this requires board that use it to enable CONFIG_ERRNO_STR to avoid a build error. Update the header to provide a NULL error message when CONFIG_ERRNO_STR is not defined, and fix the build error. This will show as "(null)" when U-Boot prints it. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com> 2016-05-09 06:55:18 +08:00			`#else`
			`static inline const char *errno_str(int errno)`
			`{`
			`return 0;`
			`}`
lib: errno: introduce errno_str(): returns errno related message The functions error's numbers are standarized - but the error messages are not. The errors are often handled with unclear error messages, so why not use an errno standarized messages. Advantages: - This could decrease the binary size. - Appended with a detailed information, the error message will be clear. This commit introduces new function: - const char *errno_to_str(int errno) The functions returns a pointer to the errno corresponding text message: - if errno is null or positive number - a pointer to "Success" message - if errno is negative - a pointer to errno related message Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Reviewed-by: Tom Rini <trini@ti.com> 2014-10-09 04:48:37 +08:00			`#endif`
Add basic errno support. Needed for hash table support; probably useful in a lot of other places as well. Signed-off-by: Wolfgang Denk <wd@denx.de> 2010-06-12 06:19:46 +08:00			`#endif /* _ERRNO_H */`