libexplain/ftruncate_on_error.c File Reference

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

Go to the source code of this file.

Functions
int	explain_ftruncate_on_error (int fildes, off_t length)

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Function Documentation

int explain_ftruncate_on_error	(	int	fildes,
		off_t	length
	)

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

Parameters:

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

Returns:

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

Example:

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

 if (explain_ftruncate_on_error(fildes, length) < 0)
 {
     ...cope with error
     ...no need to print error message
 }

Definition at line 27 of file ftruncate_on_error.c.