- int gd_alter_protection(DIRFILE *dirfile, int protection_level, int fragment_index);
The protection_level argument should be one of the following:
- Indicating that the fragment should not be protected at all.
- Indicating that the fragment's metadata should be protected.
- Indicating that the fragment's binary data should be protected.
- 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 VALUEUpon 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:
- The specified dirfile was opened read-only.
- The supplied protection_level was invalid.
- The supplied dirfile was invalid.
- The supplied index was out of range.
- 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).