explain_open_or_die(3) [debian man page]

explain_open_or_die(3)					     Library Functions Manual					    explain_open_or_die(3)

NAME

       explain_open_or_die - open file and report errors

SYNOPSIS

       #include <fcntl.h>
       #include <libexplain/open.h>

       int explain_open_or_die(const char *pathname, int flags, int mode);

DESCRIPTION

       Given  a  pathname for a file, open() returns a file descriptor, a small, non-negative integer for use in subsequent system calls (read(2),
       write(2), lseek(2), fcntl(2), etc.).  The file descriptor returned by a successful call will be the  lowest-numbered  file  descriptor  not
       currently open for the process.	See open(2) for more information.

RETURN VALUE

       On success, the new file descriptor is returned.

       On  error,  a description of the error is obtained via explain_open(3), and printed on stderr.  The process is the terminated via a call to
       the exit(EXIT_FAILURE) function.

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2008 Peter Miller

AUTHOR

       Written by Peter Miller <pmiller@opensource.org.au>

															    explain_open_or_die(3)

explain_fcntl_or_die(3) 				     Library Functions Manual					   explain_fcntl_or_die(3)

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

															   explain_fcntl_or_die(3)