NAME

       explain_readlink_or_die - read value of a symbolic link and report errors

SYNOPSIS

       #include <libexplain/readlink.h>
       ssize_t explain_readlink_or_die(const char *pathname, char *data, size_t data_size);
       ssize_t explain_readlink_on_error(const char *pathname, char *data, size_t data_size))

DESCRIPTION

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

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

       pathname
               The pathname, exactly as to be passed to the readlink(2) system call.

       data    The data, exactly as to be passed to the readlink(2) system call.

       data_size
               The data_size, exactly as to be passed to the readlink(2) system call.

RETURN VALUE

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

       The explain_readlink_on_error function always returns the  value  return  by  the  wrapped
       readlink(2) system call.

EXAMPLE

       The  explain_readlink_or_die  function  is intended to be used in a fashion similar to the
       following example:
              ssize_t result = explain_readlink_or_die(pathname, data, data_size);

SEE ALSO

       readlink(2)
               read value of a symbolic link

       explain_readlink(3)
               explain readlink(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2009 Peter Miller

                                                                       explain_readlink_or_die(3)