use the kernel sigaction syscall to avoid relying on glibc one

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1044 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 23 insertions, 0 deletions

diff --git a/osdep.h b/osdep.h
index dfe80bcf9..f1d18202b 100644
--- a/osdep.h
+++ b/osdep.h
@@ -22,6 +22,29 @@ void *get_mmap_addr(unsigned long size);
 extern void __longjmp(jmp_buf env, int val);
 #define longjmp __longjmp
 
+#include <signal.h>
+
+/* NOTE: it works only because the glibc sigset_t is >= kernel sigset_t */
+struct qemu_sigaction {
+    union {
+        void (*_sa_handler)(int);
+        void (*_sa_sigaction)(int, struct siginfo *, void *);
+    } _u;
+    unsigned long sa_flags;
+    void (*sa_restorer)(void);
+    sigset_t sa_mask;		/* mask last for extensibility */
+};
+
+int qemu_sigaction(int signum, const struct qemu_sigaction *act, 
+                   struct qemu_sigaction *oldact);
+
+#undef sigaction
+#undef sa_handler
+#undef sa_sigaction
+#define sigaction qemu_sigaction
+#define sa_handler	_u._sa_handler
+#define sa_sigaction	_u._sa_sigaction
+
 #endif
 
 #endif