[Qemu-devel] [PATCH] sigio fd passing

[Qemu-devel] [PATCH] sigio fd passing

[Alexander Graf]

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The SIGIO signal info struct includes an 'fd'-field which some
applications (esp. libasound) rely on. This patch passes this through to
the emulated program.

Alex

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Index: qemu/linux-user/signal.c
===================================================================
--- qemu.orig/linux-user/signal.c
+++ qemu/linux-user/signal.c
@@ -207,6 +207,8 @@ static inline void host_to_target_siginf
         /* should never come here, but who knows. The information for
            the target is irrelevant */
         tinfo->_sifields._sigfault._addr = 0;
+    } else if (sig == SIGIO) {
+	tinfo->_sifields._sigpoll._fd = info->si_fd;
     } else if (sig >= TARGET_SIGRTMIN) {
         tinfo->_sifields._rt._pid = info->si_pid;
         tinfo->_sifields._rt._uid = info->si_uid;
@@ -228,6 +230,8 @@ static void tswap_siginfo(target_siginfo
         sig == SIGBUS || sig == SIGTRAP) {
         tinfo->_sifields._sigfault._addr = 
             tswapl(info->_sifields._sigfault._addr);
+    } else if (sig == SIGIO) {
+	tinfo->_sifields._sigpoll._fd = tswap32(info->_sifields._sigpoll._fd);
     } else if (sig >= TARGET_SIGRTMIN) {
         tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid);
         tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid);