1 files changed, 95 insertions, 0 deletions
diff --git a/src/core/lib/iomgr/unix_sockets_posix.cc b/src/core/lib/iomgr/unix_sockets_posix.cc
new file mode 100644
index 0000000000..35f898f13a
--- /dev/null
+++ b/src/core/lib/iomgr/unix_sockets_posix.cc
@@ -0,0 +1,95 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_HAVE_UNIX_SOCKET
+
+#include "src/core/lib/iomgr/sockaddr.h"
+
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/un.h>
+
+#include "src/core/lib/iomgr/unix_sockets_posix.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/useful.h>
+
+void grpc_create_socketpair_if_unix(int sv[2]) {
+  GPR_ASSERT(socketpair(AF_UNIX, SOCK_STREAM, 0, sv) == 0);
+}
+
+grpc_error *grpc_resolve_unix_domain_address(const char *name,
+                                             grpc_resolved_addresses **addrs) {
+  struct sockaddr_un *un;
+  if (strlen(name) > GPR_ARRAY_SIZE(((struct sockaddr_un *)0)->sun_path) - 1) {
+    char *err_msg;
+    grpc_error *err;
+    gpr_asprintf(&err_msg,
+                 "Path name should not have more than %" PRIuPTR " characters.",
+                 GPR_ARRAY_SIZE(un->sun_path) - 1);
+    err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(err_msg);
+    gpr_free(err_msg);
+    return err;
+  }
+  *addrs =
+      (grpc_resolved_addresses *)gpr_malloc(sizeof(grpc_resolved_addresses));
+  (*addrs)->naddrs = 1;
+  (*addrs)->addrs =
+      (grpc_resolved_address *)gpr_malloc(sizeof(grpc_resolved_address));
+  un = (struct sockaddr_un *)(*addrs)->addrs->addr;
+  un->sun_family = AF_UNIX;
+  strcpy(un->sun_path, name);
+  (*addrs)->addrs->len = strlen(un->sun_path) + sizeof(un->sun_family) + 1;
+  return GRPC_ERROR_NONE;
+}
+
+int grpc_is_unix_socket(const grpc_resolved_address *resolved_addr) {
+  const struct sockaddr *addr = (const struct sockaddr *)resolved_addr->addr;
+  return addr->sa_family == AF_UNIX;
+}
+
+void grpc_unlink_if_unix_domain_socket(
+    const grpc_resolved_address *resolved_addr) {
+  const struct sockaddr *addr = (const struct sockaddr *)resolved_addr->addr;
+  if (addr->sa_family != AF_UNIX) {
+    return;
+  }
+  struct sockaddr_un *un = (struct sockaddr_un *)resolved_addr->addr;
+  struct stat st;
+
+  if (stat(un->sun_path, &st) == 0 && (st.st_mode & S_IFMT) == S_IFSOCK) {
+    unlink(un->sun_path);
+  }
+}
+
+char *grpc_sockaddr_to_uri_unix_if_possible(
+    const grpc_resolved_address *resolved_addr) {
+  const struct sockaddr *addr = (const struct sockaddr *)resolved_addr->addr;
+  if (addr->sa_family != AF_UNIX) {
+    return NULL;
+  }
+
+  char *result;
+  gpr_asprintf(&result, "unix:%s", ((struct sockaddr_un *)addr)->sun_path);
+  return result;
+}
+
+#endif