20060303a

1 files changed, 66 insertions, 0 deletions

diff --git a/liblogfs/fidmap.c b/liblogfs/fidmap.c
new file mode 100644
index 00000000..9973c312
--- /dev/null
+++ b/liblogfs/fidmap.c
@@ -0,0 +1,66 @@
+#include "lib9.h"
+#include "logfs.h"
+#include "local.h"
+
+enum {
+	FIDMOD = 127
+};
+
+int
+logfshashulong(void *v, int size)
+{
+	return (ulong)v % size;
+}
+
+static int
+compare(Fid *f, ulong fid)
+{
+//print("fidcompare(%ld, %ld)\n", f->fid, fid);
+	return f->fid == fid;
+}
+
+static int
+allocsize(void *key)
+{
+	USED(key);
+	return sizeof(Fid);
+}
+
+void
+fidfree(Fid *f)
+{
+	logfsdrsfree(&f->drs);
+}
+
+char *
+logfsfidmapnew(FidMap **fidmapp)
+{
+	return logfsmapnew(FIDMOD, logfshashulong, (int (*)(void *, void *))compare, allocsize, (void (*)(void *))fidfree, fidmapp);
+}
+
+int
+logfsfidmapclunk(FidMap *m, ulong fid)
+{
+	Fid *f = logfsfidmapfindentry(m, fid);
+	if(f) {
+		logfsentryclunk(f->entry);
+		logfsmapdeleteentry(m, (void *)fid);
+		return 1;
+	}
+	return 0;
+}
+
+char *
+logfsfidmapnewentry(FidMap *m, ulong fid, Fid **fidmapp)
+{
+	char *errmsg;
+	errmsg = logfsmapnewentry(m, (void *)fid, fidmapp);
+	if(errmsg)
+		return errmsg;
+	if(*fidmapp == nil)
+		return nil;
+	(*fidmapp)->fid = fid;
+	(*fidmapp)->openmode = -1;
+	return nil;
+}
+