explain_dup2_or_die − duplicate a file descriptor and report errors
#include <libexplain/dup2.h>
void explain_dup2_or_die(int oldfd, int newfd);
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.
duplicate a file descriptor |
explain dup2(2) errors
terminate the calling process |
libexplain version 1.4
Copyright (C) 2008 Peter Miller