Last Change: 2018-09-07, 16:50
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explain_fcntl_or_die − manipulate a file descriptor and report errors
#include <libexplain/fcntl.h>
int explain_fcntl_or_die(int fildes, int command, long arg);
The explain_fcntl_or_die function is used to call the fcntl(2) system call. On failure an explanation will be printed to stderr, obtained from explain_fcntl(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:
int result = explain_fcntl_or_die(fildes, command, arg);
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fildes |
The fildes, exactly as to be passed to the fcntl(2) system call. |
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command |
The command, exactly as to be passed to the fcntl(2) system call. |
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arg |
The arg, exactly as to be passed to the fcntl(2) system call. |
Returns:
This function only returns on success, and it returns whatever was returned by the fcntl(2) call; depending on the command, this may have no use. On failure, prints an explanation and exits, it does not return.
manipulate a file descriptor
explain fcntl(2) errors
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terminate the calling process |
libexplain version 1.4
Copyright (C) 2008 Peter Miller