NAME

       gd_alter_protection — modify the protection level of a dirfile fragment

SYNOPSIS

       #include <getdata.h>

       int gd_alter_protection(DIRFILE *dirfile, int protection_level, int fragment_index);

DESCRIPTION

       The  gd_alter_protection()  function  sets  the  advisory  protection  level of the format
       specification fragment given by  fragment_index  to  protection_level  in  the  dirfile(5)
       database specified by dirfile.

       The protection_level argument should be one of the following:

       GD_PROTECT_NONE
              Indicating that the fragment should not be protected at all.

       GD_PROTECT_FORMAT
              Indicating that the fragment's metadata should be protected.

       GD_PROTECT_DATA
              Indicating that the fragment's binary data should be protected.

       GD_PROTECT_ALL
              Indicating  that  both  the  fragment's  metadata  and  its  binary  data should be
              protected.  This symbol is equivalent to the bitwise or  of  GD_PROTECT_FORMAT  and
              GD_PROTECT_DATA.

       In addition to being simply a valid fragment index, fragment_index may also be the special
       value GD_ALL_FRAGMENTS, which indicates that the protection level of all fragments in  the
       database should be changed.

RETURN VALUE

       Upon  successful  completion, gd_alter_protection() returns zero.  On error, it returns -1
       and sets the dirfile error to a non-zero error value.  Possible error values are:

       GD_E_ACCMODE
               The specified dirfile was opened read-only.

       GD_E_BAD_DIRFILE
               The supplied dirfile was invalid.

       GD_E_BAD_INDEX
               The supplied index was out of range.

       GD_E_BAD_PROTECTION
               The supplied protection level was invalid.

       The dirfile error may be retrieved by calling gd_error(3).  A descriptive error string for
       the last error encountered can be obtained from a call to gd_error_string(3).

NOTES

       This  is  the  only  GetData  function  which ignores the (existing) protection level of a
       format specification fragment.

SEE ALSO

       gd_open(3),  gd_error(3),  gd_error_string(3),  gd_protection(3),   dirfile(5),   dirfile-
       format(5)