NAME

       explain_fchmod_or_die - change permissions of an open file and report errors

SYNOPSIS

       #include <libexplain/fchmod.h>
       void explain_fchmod_or_die(int fildes, mode_t mode);
       int explain_fchmod_on_error(int fildes, mode_t mode);

DESCRIPTION

       The  explain_fchmod_or_die  function is used to call the fchmod(2) system call. On failure
       an explanation will be printed to stderr, obtained from  the  explain_fchmod(3)  function,
       and then the process terminates by calling exit(EXIT_FAILURE).

       The explain_fchmod_on_error function is used to call the fchmod(2) system call. On failure
       an explanation will be printed to stderr, obtained from  the  explain_fchmod(3)  function,
       but still returns to the caller.

       fildes  The fildes, exactly as to be passed to the fchmod(2) system call.

       mode    The mode, exactly as to be passed to the fchmod(2) system call.

RETURN VALUE

       The  explain_fchmod_or_die  function  only  returns  on  success,  see  fchmod(2) for more
       information. On failure, prints an explanation and exits, it does not return.

       The explain_fchmod_on_error function always  returns  the  value  return  by  the  wrapped
       fchmod(2) system call.

EXAMPLE

       The  explain_fchmod_or_die  function  is  intended  to be used in a fashion similar to the
       following example:
              explain_fchmod_or_die(fildes, mode);

SEE ALSO

       fchmod(2)
               change permissions of an open file

       explain_fchmod(3)
               explain fchmod(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 1.4
       Copyright (C) 2013 Peter Miller

                                                                         explain_fchmod_or_die(3)