NAME¶
explain_fcntl_or_die - manipulate a file descriptor and report errors
SYNOPSIS¶
#include <libexplain/fcntl.h>
int explain_fcntl_or_die(int fildes, int command, long arg);
DESCRIPTION¶
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);
- fildes
- The fildes, exactly as to be passed to the fcntl(2)
system call.
- command
- The command, exactly as to be passed to the fcntl(2)
system call.
- 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.
SEE ALSO¶
- fcntl(2)
- manipulate a file descriptor
- explain_fcntl(3)
- explain fcntl(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT¶
libexplain version 0.52
Copyright (C) 2008 Peter Miller
