20060303a

1 files changed, 93 insertions, 0 deletions

diff --git a/liblogfs/group.c b/liblogfs/group.c
new file mode 100644
index 00000000..7e187e63
--- /dev/null
+++ b/liblogfs/group.c
@@ -0,0 +1,93 @@
+#include "lib9.h"
+#include "logfs.h"
+#include "local.h"
+
+enum {
+	GROUPMOD = 127
+};
+
+static int
+groupcompare(Group *g, char *uid)
+{
+	return g->uid == uid;
+}
+
+static int
+unamecompare(Uname *u, char *uname)
+{
+	return u->uname == uname;
+}
+
+static int
+groupallocsize(void *key)
+{
+	USED(key);
+	return sizeof(Group);
+}
+
+static int
+unameallocsize(void *key)
+{
+	USED(key);
+	return sizeof(Uname);
+}
+
+char *
+logfsgroupmapnew(GroupMap **groupmapp, UnameMap **unamemapp)
+{
+	char *errmsg;
+	errmsg = logfsmapnew(GROUPMOD, logfshashulong, (int (*)(void *, void *))groupcompare,
+		groupallocsize, nil, groupmapp);
+	if(errmsg)
+		return errmsg;
+	errmsg = logfsmapnew(GROUPMOD, logfshashulong, (int (*)(void *, void *))unamecompare,
+		unameallocsize, nil, unamemapp);
+	if(errmsg)
+		logfsmapfree(groupmapp);
+	return errmsg;
+}
+
+char *
+logfsgroupmapnewentry(GroupMap *gm, UnameMap *um, char *uid, char *uname, Group **groupp, Uname **unamep)
+{
+	char *errmsg;
+	errmsg = logfsmapnewentry(gm, uid, groupp);
+	if(errmsg)
+		return errmsg;
+	errmsg = logfsgroupsetnew(&(*groupp)->members);
+	if(errmsg) {
+		logfsmapdeleteentry(gm, uid);
+		return errmsg;
+	}
+	errmsg = logfsmapnewentry(um, uname, unamep);
+	if(errmsg) {
+		logfsgroupsetfree(&(*groupp)->members);
+		logfsmapdeleteentry(gm, uid);
+		return errmsg;
+	}
+	(*groupp)->uid = uid;
+	(*groupp)->uname = uname;
+	(*unamep)->uname = uname;
+	(*unamep)->g = *groupp;
+	return nil;
+}
+
+char *
+logfsgroupmapfinduname(GroupMap *m, char *uid)
+{
+	Group *g;
+	g = logfsgroupmapfindentry(m, uid);
+	if(g)
+		return g->uname;
+	return nil;
+}
+
+char *
+logfsunamemapfinduid(UnameMap *m, char *uname)
+{
+	Uname *u;
+	u = logfsunamemapfindentry(m, uname);
+	if(u)
+		return u->g->uid;
+	return nil;
+}