diff options
Diffstat (limited to 'libstore/flags.c')
-rw-r--r-- | libstore/flags.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/libstore/flags.c b/libstore/flags.c new file mode 100644 index 00000000..5d2ce74b --- /dev/null +++ b/libstore/flags.c @@ -0,0 +1,64 @@ +/* Setting various store flags + + Copyright (C) 1996 Free Software Foundation, Inc. + + Written by Miles Bader <miles@gnu.ai.mit.edu> + + This file is part of the GNU Hurd. + + The GNU Hurd is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + The GNU Hurd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include <malloc.h> +#include <string.h> + +#include "store.h" + +/* Add FLAGS to STORE's currently set flags. */ +error_t +store_set_flags (struct store *store, int flags) +{ + error_t err = 0; + int orig = store->flags, new = flags & ~orig; + + if (new & STORE_BACKEND_FLAGS) + if (store->class->set_flags) + err = (*store->class->set_flags) (store, new); + else + err = EINVAL; + + if (! err) + store->flags |= (new & ~STORE_BACKEND_FLAGS); + + return err; +} + +/* Remove FLAGS from STORE's currently set flags. */ +error_t +store_clear_flags (struct store *store, int flags) +{ + error_t err = 0; + int orig = store->flags, kill = flags & orig; + + if (kill & STORE_BACKEND_FLAGS) + if (store->class->clear_flags) + err = (*store->class->clear_flags) (store, kill); + else + err = EINVAL; + + if (! err) + store->flags &= ~(kill & ~STORE_BACKEND_FLAGS); + + return err; +} |