zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libc/sysdeps/linux/common/waitid.c b/ap/build/uClibc/libc/sysdeps/linux/common/waitid.c
new file mode 100644
index 0000000..c8115f9
--- /dev/null
+++ b/ap/build/uClibc/libc/sysdeps/linux/common/waitid.c
@@ -0,0 +1,81 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Copyright (C) 2007 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <features.h>
+
+#if defined __USE_SVID || defined __USE_XOPEN
+# include <string.h>
+# include <sys/types.h>
+# include <sys/wait.h>
+# include <sys/syscall.h>
+
+# ifdef __NR_waitid
+
+# ifdef __UCLIBC_HAS_THREADS_NATIVE__
+# include <sysdep-cancel.h>
+# else
+# define SINGLE_THREAD_P 1
+# endif
+
+/* The waitid() POSIX interface takes 4 arguments, but the kernel function
+ * actually takes 5. The fifth is a pointer to struct rusage. Make sure
+ * we pass NULL rather than letting whatever was in the register bleed up.
+ */
+#define __NR_waitid5 __NR_waitid
+static __always_inline
+_syscall5(int, waitid5, idtype_t, idtype, id_t, id, siginfo_t*, infop,
+ int, options, struct rusage*, ru)
+# endif
+
+int waitid(idtype_t idtype, id_t id, siginfo_t *infop, int options)
+{
+# ifdef __NR_waitid
+ if (SINGLE_THREAD_P)
+ return waitid5(idtype, id, infop, options, NULL);
+
+# ifdef __UCLIBC_HAS_THREADS_NATIVE__
+ int oldtype = LIBC_CANCEL_ASYNC ();
+ int result = waitid5(idtype, id, infop, options, NULL);
+ LIBC_CANCEL_RESET (oldtype);
+ return result;
+# endif
+
+# elif defined __NR_waitpid
+ switch (idtype) {
+ case P_PID:
+ if (id <= 0)
+ goto invalid;
+ break;
+ case P_PGID:
+ if (id < 0 || id == 1)
+ goto invalid;
+ id = -id;
+ break;
+ case P_ALL:
+ id = -1;
+ break;
+ default:
+ invalid:
+ __set_errno(EINVAL);
+ return -1;
+ }
+
+ memset(infop, 0, sizeof *infop);
+ infop->si_pid = waitpid(id, &infop->si_status, options
+# ifdef WEXITED
+ &~ WEXITED
+# endif
+ );
+ if (infop->si_pid < 0)
+ return infop->si_pid;
+ return 0;
+# else
+ __set_errno(ENOSYS);
+ return -1;
+# endif
+}
+#endif