patch-2.4.23 linux-2.4.23/include/linux/ptrace.h

• Lines: 23
• Date: 2003-11-28 10:26:21.000000000 -0800
• Orig file: linux-2.4.22/include/linux/ptrace.h
• Orig date: 2001-09-14 15:55:17.000000000 -0700

diff -urN linux-2.4.22/include/linux/ptrace.h linux-2.4.23/include/linux/ptrace.h
@@ -23,4 +23,22 @@
 
 #include <asm/ptrace.h>
 
+#ifdef __KERNEL__
+
+#ifndef force_successful_syscall_return
+/*
+ * System call handlers that, upon successful completion, need to return a
+ * negative value should call force_successful_syscall_return() right before
+ * returning.  On architectures where the syscall convention provides for a
+ * separate error flag (e.g., alpha, ia64, ppc{,64}, sparc{,64}, possibly
+ * others), this macro can be used to ensure that the error flag will not get
+ * set.  On architectures which do not support a separate error flag, the macro
+ * is a no-op and the spurious error condition needs to be filtered out by some
+ * other means (e.g., in user-level, by passing an extra argument to the
+ * syscall handler, or something along those lines).
+ */
+#define force_successful_syscall_return() do { } while (0)
+#endif
+#endif
+
 #endif