sys_wait: Implement WSTOPSIG.

[pspp] / lib / sys_wait.in.h

diff --git a/lib/sys_wait.in.h b/lib/sys_wait.in.h
index d30a3e6f25a96d62c5ac53139e2b3acc76b41e20..0006112ead3a6433bb794dfaedb746524f29f3e2 100644 (file)
--- a/lib/sys_wait.in.h
+++ b/lib/sys_wait.in.h
@@ -61,6 +61,11 @@
 #  define WEXITSTATUS(x) (((x) >> 8) & 0xff)
 # endif
 
+/* The stopping signal. Only to be accessed if WIFSTOPPED(x) is true.  */
+# ifndef WSTOPSIG
+#  define WSTOPSIG(x) (((x) >> 8) & 0x7f)
+# endif
+
 /* True if the process dumped core.  Not standardized by POSIX.  */
 # ifndef WCOREDUMP
 #  define WCOREDUMP(x) ((x) & 0x80)
@@ -98,6 +103,9 @@ extern "C" {
 
 # define WEXITSTATUS(x) (x)
 
+/* There are no stopping signals.  */
+# define WSTOPSIG(x) 0
+
 /* There are no core dumps.  */
 # define WCOREDUMP(x) 0