explain_fcntl_or_die man page
explain_fcntl_or_die — manipulate a file descriptor and report errors
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
This function is intended to be used in a fashion similar to the following example:
int result = explain_fcntl_or_die(fildes, command, arg);
The fildes, exactly as to be passed to the fcntl(2) system call.
The command, exactly as to be passed to the fcntl(2) system call.
The arg, exactly as to be passed to the fcntl(2) system call.
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
terminate the calling process
libexplain version 1.4
Copyright (C) 2008 Peter Miller