Man page - explain_dup2_or_die(3)

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explain_dup2_or_die

NAME
SYNOPSIS
DESCRIPTION
SEE ALSO
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NAME

explain_dup2_or_die - duplicate a file descriptor and report errors

SYNOPSIS

#include <libexplain/dup2.h>
void explain_dup2_or_die(int oldfd, int newfd);

DESCRIPTION

The explain_dup2_or_die function is used to call the dup2 (2) system call. On failure an explanation will be printed to stderr , obtained from explain_dup2 (3), and then the process terminates by calling exit(EXIT_FAILURE).

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

explain_dup2_or_die(oldfd, newfd);

	oldfd		The oldfd, exactly as to be passed to the dup2 (2) system call.
	newfd		The newfd, exactly as to be passed to the dup2 (2) system call.

Returns:

This function only returns on success. On failure, prints an explanation and exits.