shared: introduce cmsg_close_all() call

[elogind.git] / src / shared / util.c

diff --git a/src/shared/util.c b/src/shared/util.c
index deb98396335acbe26ff4f3626c678747537739cd..dc6528013bb0a7fded44e17a9e84e3eb5473b9f8 100644 (file)
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -8110,3 +8110,13 @@ ssize_t string_table_lookup(const char * const *table, size_t len, const char *k
 
         return -1;
 }
+
+void cmsg_close_all(struct msghdr *mh) {
+        struct cmsghdr *cmsg;
+
+        assert(mh);
+
+        for (cmsg = CMSG_FIRSTHDR(mh); cmsg; cmsg = CMSG_NXTHDR(mh, cmsg))
+                if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS)
+                        close_many((int*) CMSG_DATA(cmsg), (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int));
+}