void
pkgset_blank(struct pkgset *set)
{
set->name = NULL;
set->depended.available = NULL;
set->depended.installed = NULL;
pkg_blank(&set->pkg);
set->pkg.set = set;
}
void
pkgset_blank(struct pkgset *set)
{
set->name = NULL;
set->depended.available = NULL;
set->depended.installed = NULL;
pkg_blank(&set->pkg);
set->installed_instances = 0;
set->pkg.set = set;
set->pkg.arch_next = NULL;
}
/**
* Return the package instance in a set with the given architecture.
*
* It traverse the various instances to find out whether there's one
* matching the given architecture. If found, it returns it. Otherwise it
* allocates a new instance and registers it in the package set before
* returning it.
*
* @param set The package set to use.
* @param arch The requested architecture.
*
* @return The package instance.
*/
struct pkginfo *
pkg_hash_get_pkg(struct pkgset *set, const struct dpkg_arch *arch)
{
struct pkginfo *pkg, **pkgp;
if (arch == NULL)
internerr("arch argument is NULL");
if (arch->type == DPKG_ARCH_NONE)
internerr("arch argument is none");
pkg = &set->pkg;
/* If there's a single unused slot, let's use that. */
if (pkg->installed.arch->type == DPKG_ARCH_NONE && pkg->arch_next == NULL) {
/* We can only initialize the arch pkgbin members, because those are used
* to find instances, anything else will be overwritten at parse time. */
pkg->installed.arch = arch;
pkg->available.arch = arch;
return pkg;
}
/* Match the slot with the most appropriate architecture. The installed
* architecture always has preference over the available one, as there's
* a small time window on cross-grades, where they might differ. */
for (pkgp = &pkg; *pkgp; pkgp = &(*pkgp)->arch_next) {
if ((*pkgp)->installed.arch == arch)
return *pkgp;
}
/* Need to create a new instance for the wanted architecture. */
pkg = nfmalloc(sizeof(*pkg));
pkg_blank(pkg);
pkg->set = set;
pkg->arch_next = NULL;
/* We can only initialize the arch pkgbin members, because those are used
* to find instances, anything else will be overwritten at parse time. */
pkg->installed.arch = arch;
pkg->available.arch = arch;
*pkgp = pkg;
npkg++;
return pkg;
}
