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Diffstat (limited to 'xlators/features/metadisp/src/metadisp-lookup.c')
-rw-r--r--xlators/features/metadisp/src/metadisp-lookup.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/xlators/features/metadisp/src/metadisp-lookup.c b/xlators/features/metadisp/src/metadisp-lookup.c
new file mode 100644
index 0000000..27d90c9
--- /dev/null
+++ b/xlators/features/metadisp/src/metadisp-lookup.c
@@ -0,0 +1,90 @@
+#include "metadisp.h"
+#include <glusterfs/call-stub.h>
+
+/**
+ * Lookup, like stat, is a two-step process for grabbing the metadata details
+ * as well as the data details.
+ */
+
+int32_t
+metadisp_backend_lookup_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno, inode_t *inode,
+ struct iatt *buf, dict_t *xdata,
+ struct iatt *postparent)
+{
+ METADISP_TRACE("backend_lookup_cbk");
+ if (op_errno == ENOENT) {
+ op_errno = ENODATA;
+ op_ret = -1;
+ }
+ STACK_UNWIND_STRICT(lookup, frame, op_ret, op_errno, inode, buf, xdata,
+ postparent);
+ return 0;
+}
+
+int32_t
+metadisp_backend_lookup_resume(call_frame_t *frame, xlator_t *this, loc_t *loc,
+ dict_t *xdata)
+{
+ METADISP_TRACE("backend_lookup_resume");
+ loc_t backend_loc = {
+ 0,
+ };
+ if (build_backend_loc(loc->gfid, loc, &backend_loc)) {
+ goto unwind;
+ }
+
+ STACK_WIND(frame, metadisp_backend_lookup_cbk, DATA_CHILD(this),
+ DATA_CHILD(this)->fops->lookup, &backend_loc, xdata);
+ return 0;
+
+unwind:
+ STACK_UNWIND_STRICT(lookup, frame, -1, EINVAL, NULL, NULL, NULL, NULL);
+ return 0;
+}
+
+int32_t
+metadisp_lookup_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno, inode_t *inode,
+ struct iatt *buf, dict_t *xdata, struct iatt *postparent)
+{
+ METADISP_TRACE("%d %d", op_ret, op_errno);
+ call_stub_t *stub = NULL;
+ stub = cookie;
+
+ if (op_ret != 0) {
+ goto unwind;
+ }
+
+ if (!IA_ISREG(buf->ia_type)) {
+ goto unwind;
+ } else if (!stub) {
+ op_errno = EINVAL;
+ goto unwind;
+ }
+
+ METADISP_TRACE("resuming stub");
+
+ // memcpy(stub->args.loc.gfid, buf->ia_gfid, sizeof(uuid_t));
+ call_resume(stub);
+ return 0;
+unwind:
+ METADISP_TRACE("unwinding %d %d", op_ret, op_errno);
+ STACK_UNWIND_STRICT(lookup, frame, op_ret, op_errno, inode, buf, xdata,
+ postparent);
+ if (stub) {
+ call_stub_destroy(stub);
+ }
+ return 0;
+}
+
+int32_t
+metadisp_lookup(call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata)
+{
+ METADISP_TRACE("lookup");
+ call_stub_t *stub = NULL;
+ stub = fop_lookup_stub(frame, metadisp_backend_lookup_resume, loc, xdata);
+ STACK_WIND_COOKIE(frame, metadisp_lookup_cbk, stub, METADATA_CHILD(this),
+ METADATA_CHILD(this)->fops->lookup, loc, xdata);
+ return 0;
+}