1explain_dup2_or_die(3)     Library Functions Manual     explain_dup2_or_die(3)
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NAME

6       explain_dup2_or_die - duplicate a file descriptor and report errors
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SYNOPSIS

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

13       The  explain_dup2_or_die  function  is  used to call the dup2(2) system
14       call.  On failure an explanation will be printed  to  stderr,  obtained
15       from  explain_dup2(3),  and  then  the  process  terminates  by calling
16       exit(EXIT_FAILURE).
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18       This function is intended to be used in a fashion similar to  the  fol‐
19       lowing example:
20              explain_dup2_or_die(oldfd, newfd);
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22       oldfd   The oldfd, exactly as to be passed to the dup2(2) system call.
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24       newfd   The newfd, exactly as to be passed to the dup2(2) system call.
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26       Returns:
27               This  function  only returns on success.  On failure, prints an
28               explanation and exits.
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SEE ALSO

31       dup2(2) duplicate a file descriptor
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33       explain_dup2(3)
34               explain dup2(2) errors
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36       exit(2) terminate the calling process
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39       libexplain version 0.40
40       Copyright (C) 2008 Peter Miller
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44                                                        explain_dup2_or_die(3)
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