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| explain_dup2_or_die(3) | FreeBSD Library Functions Manual | explain_dup2_or_die(3) |
NAME
explain_dup2_or_die - duplicate a file descriptor and report errorsSYNOPSIS
#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.
SEE ALSO
- dup2(2)
- duplicate a file descriptor
- explain_dup2(3)
- explain dup2(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT
libexplain version 1.3Copyright (C) 2008 Peter Miller
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