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59345b1f0 lib: errno: introduce errno_str(): returns errno related message ... Browse Code »

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
Reviewed-by: Tom Rini

Przemyslaw Marczak
2014-12-12 04:18:41 +0800

errno.h 212 Bytes

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#ifndef _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);
#endif
#endif /* _ERRNO_H */