Import sources from 2011-03-30 iso image

1 files changed, 82 insertions, 0 deletions

diff --git a/sys/src/lib9p/fid.c b/sys/src/lib9p/fid.c
new file mode 100755
index 000000000..e0b6af5ee
--- /dev/null
+++ b/sys/src/lib9p/fid.c
@@ -0,0 +1,82 @@
+#include <u.h>
+#include <libc.h>
+#include <auth.h>
+#include <fcall.h>
+#include <thread.h>
+#include "9p.h"
+
+static void
+incfidref(void *v)
+{
+	Fid *f;
+
+	f = v;
+	if(f)
+		incref(&f->ref);
+}
+
+Fidpool*
+allocfidpool(void (*destroy)(Fid*))
+{
+	Fidpool *f;
+
+	f = emalloc9p(sizeof *f);
+	f->map = allocmap(incfidref);
+	f->destroy = destroy;
+	return f;
+}
+
+void
+freefidpool(Fidpool *p)
+{
+	freemap(p->map, (void(*)(void*))p->destroy);
+	free(p);
+}
+
+Fid*
+allocfid(Fidpool *pool, ulong fid)
+{
+	Fid *f;
+
+	f = emalloc9p(sizeof *f);
+	f->fid = fid;
+	f->omode = -1;
+	f->pool = pool;
+
+	incfidref(f);
+	incfidref(f);
+	if(caninsertkey(pool->map, fid, f) == 0){
+		closefid(f);
+		closefid(f);
+		return nil;
+	}
+
+	return f;
+}
+
+Fid*
+lookupfid(Fidpool *pool, ulong fid)
+{
+	return lookupkey(pool->map, fid);
+}
+
+void
+closefid(Fid *f)
+{
+	if(decref(&f->ref) == 0) {
+		if(f->rdir)
+			closedirfile(f->rdir);
+		if(f->pool->destroy)
+			f->pool->destroy(f);
+		if(f->file)
+			closefile(f->file);
+		free(f->uid);
+		free(f);
+	}
+}
+
+Fid*
+removefid(Fidpool *pool, ulong fid)
+{
+	return deletekey(pool->map, fid);
+}