libexplain/dup_on_error.c File Reference

#include <libexplain/ac/errno.h>
#include <libexplain/ac/unistd.h>
#include <libexplain/dup.h>
#include <libexplain/output.h>

Go to the source code of this file.

Functions
int	explain_dup_on_error (int fildes)

---

Function Documentation

int explain_dup_on_error

(

int

fildes

)

The explain_dup_on_error function is used to call the dup(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_dup(3) function.

This function is intended to be used in a fashion similar to the following example:

 int newfd = explain_dup_on_error(fildes);
 if (newfd < 0)
 {
     ...cope with error
     ...no need to print error message
 }

Parameters:

fildes

The fildes, exactly as to be passed to the dup(2) system call.

Returns:

The value returned by the wrapped dup(2) system call.

Definition at line 27 of file dup_on_error.c.