libalpm: introduce a usage level for repos

This defines a level of interest a user has in a repository. These are
described by the bitmask flags in the alpm_db_usage_t enum:

  ALPM_DB_USAGE_SEARCH: repo is valid for searching
  ALPM_DB_USAGE_INSTALL: repo is valid for installs (e.g. -S pkg)
  ALPM_DB_USAGE_UPGRADE: repo is valid for sysupgrades
  ALPM_DB_USAGE_ALL: all of the above are valid

Explicitly listing the contents of a repo will always be valid, and the
repo will always be refreshed appropriately on sync operations.

Signed-off-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/libalpm/db.h b/lib/libalpm/db.h
index 80292933..4bb6ee91 100644
--- a/lib/libalpm/db.h
+++ b/lib/libalpm/db.h
@@ -73,6 +73,7 @@ struct __alpm_db_t {
 	/* flags determining validity, local, loaded caches, etc. */
 	enum _alpm_dbstatus_t status;
 	alpm_siglevel_t siglevel;
+	alpm_db_usage_t usage;
 };