inferno-os tree was separated from the inferno-os-android (separated from the Android driver)

1 files changed, 50 insertions, 0 deletions

diff --git a/liblogfs/path.c b/liblogfs/path.c
new file mode 100644
index 0000000..f82e5b5
--- /dev/null
+++ b/liblogfs/path.c
@@ -0,0 +1,50 @@
+#include "logfsos.h"
+#include "logfs.h"
+#include "local.h"
+
+enum {
+	PATHMOD = 127
+};
+
+static int
+compare(void *a, void *b)
+{
+	Path *f = a;
+	ulong path = (ulong)b;	/* sic */
+	return f->path == path;
+}
+
+static int
+allocsize(void *key)
+{
+	USED(key);
+	return sizeof(Path);
+}
+
+char *
+logfspathmapnew(PathMap **pathmapp)
+{
+	return logfsmapnew(PATHMOD, logfshashulong, compare, allocsize, nil, pathmapp);
+}
+
+char *
+logfspathmapnewentry(PathMap *m, ulong path, Entry *e, Path **pathmapp)
+{
+	char *errmsg;
+	errmsg = logfsmapnewentry(m, (void*)path, pathmapp);
+	if(errmsg)
+		return errmsg;
+	if(*pathmapp == nil)
+		return nil;
+	(*pathmapp)->path = path;
+	(*pathmapp)->entry = e;
+	return nil;
+}
+
+Entry *
+logfspathmapfinde(PathMap *m, ulong path)
+{
+	Path *p;
+	p = logfspathmapfindentry(m, path);
+	return p ? p->entry : nil;
+}