[Qemu-devel] [PATCH] linux-user: Add support for STOP/CONT signals

[Riku Voipio <riku.voipio@iki.fi>]

When running qemu-user, you might want to be able to STOP and
CONT the emulated process.

Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
---
 linux-user/signal.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/linux-user/signal.c b/linux-user/signal.c
index 1dd634f..cce4922 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -361,10 +361,15 @@ int queue_signal(CPUState *env, int sig, target_siginfo_t *info)
     k = &ts->sigtab[sig - 1];
     handler = sigact_table[sig - 1]._sa_handler;
     if (handler == TARGET_SIG_DFL) {
+        if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) {
+            kill(getpid(),SIGSTOP);
+            return 0;
+        } else
         /* default handler : ignore some signal. The other are fatal */
         if (sig != TARGET_SIGCHLD &&
             sig != TARGET_SIGURG &&
-            sig != TARGET_SIGWINCH) {
+            sig != TARGET_SIGWINCH &&
+            sig != TARGET_SIGCONT) {
             force_sig(sig);
         } else {
             return 0; /* indicate ignored */
-- 
1.5.6.5


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