From 4b7c0418c0d33b8e5c690a33dce9c6664a714a24 Mon Sep 17 00:00:00 2001
From: malc <av1474@comtv.ru>
Date: Fri, 6 Aug 2010 13:08:46 +0400
Subject: audio: make audio_pt_init block all signals

Signed-off-by: malc <av1474@comtv.ru>
---
 audio/audio_pt_int.c | 25 ++++++++++++++++++++++
 audio/esdaudio.c     | 58 ++++++----------------------------------------------
 2 files changed, 31 insertions(+), 52 deletions(-)

(limited to 'audio')

diff --git a/audio/audio_pt_int.c b/audio/audio_pt_int.c
index e889a983b1..f15cc7015b 100644
--- a/audio/audio_pt_int.c
+++ b/audio/audio_pt_int.c
@@ -6,6 +6,8 @@
 #include "audio_int.h"
 #include "audio_pt_int.h"
 
+#include <signal.h>
+
 static void logerr (struct audio_pt *pt, int err, const char *fmt, ...)
 {
     va_list ap;
@@ -23,9 +25,16 @@ int audio_pt_init (struct audio_pt *p, void *(*func) (void *),
 {
     int err, err2;
     const char *efunc;
+    sigset_t set, old_set;
 
     p->drv = drv;
 
+    err = sigfillset (&set);
+    if (err) {
+        logerr (p, errno, "%s(%s): sigfillset failed", cap, AUDIO_FUNC);
+        return -1;
+    }
+
     err = pthread_mutex_init (&p->mutex, NULL);
     if (err) {
         efunc = "pthread_mutex_init";
@@ -38,7 +47,23 @@ int audio_pt_init (struct audio_pt *p, void *(*func) (void *),
         goto err1;
     }
 
+    err = pthread_sigmask (SIG_BLOCK, &set, &old_set);
+    if (err) {
+        efunc = "pthread_sigmask";
+        goto err2;
+    }
+
     err = pthread_create (&p->thread, NULL, func, opaque);
+
+    err2 = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
+    if (err2) {
+        logerr (p, err2, "%s(%s): pthread_sigmask (restore) failed",
+                cap, AUDIO_FUNC);
+        /* We have failed to restore original signal mask, all bets are off,
+           so terminate the process */
+        exit (EXIT_FAILURE);
+    }
+
     if (err) {
         efunc = "pthread_create";
         goto err2;
diff --git a/audio/esdaudio.c b/audio/esdaudio.c
index 79142d1706..9a1f2f8617 100644
--- a/audio/esdaudio.c
+++ b/audio/esdaudio.c
@@ -24,7 +24,6 @@
 #include <esd.h>
 #include "qemu-common.h"
 #include "audio.h"
-#include <signal.h>
 
 #define AUDIO_CAP "esd"
 #include "audio_int.h"
@@ -190,10 +189,6 @@ static int qesd_init_out (HWVoiceOut *hw, struct audsettings *as)
     ESDVoiceOut *esd = (ESDVoiceOut *) hw;
     struct audsettings obt_as = *as;
     int esdfmt = ESD_STREAM | ESD_PLAY;
-    int err;
-    sigset_t set, old_set;
-
-    sigfillset (&set);
 
     esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
     switch (as->fmt) {
@@ -231,43 +226,25 @@ static int qesd_init_out (HWVoiceOut *hw, struct audsettings *as)
         return -1;
     }
 
-    esd->fd = -1;
-    err = pthread_sigmask (SIG_BLOCK, &set, &old_set);
-    if (err) {
-        qesd_logerr (err, "pthread_sigmask failed\n");
-        goto fail1;
-    }
-
     esd->fd = esd_play_stream (esdfmt, as->freq, conf.dac_host, NULL);
     if (esd->fd < 0) {
         qesd_logerr (errno, "esd_play_stream failed\n");
-        goto fail2;
+        goto fail1;
     }
 
     if (audio_pt_init (&esd->pt, qesd_thread_out, esd, AUDIO_CAP, AUDIO_FUNC)) {
-        goto fail3;
-    }
-
-    err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
-    if (err) {
-        qesd_logerr (err, "pthread_sigmask(restore) failed\n");
+        goto fail2;
     }
 
     return 0;
 
- fail3:
+ fail2:
     if (close (esd->fd)) {
         qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
                      AUDIO_FUNC, esd->fd);
     }
     esd->fd = -1;
 
- fail2:
-    err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
-    if (err) {
-        qesd_logerr (err, "pthread_sigmask(restore) failed\n");
-    }
-
  fail1:
     qemu_free (esd->pcm_buf);
     esd->pcm_buf = NULL;
@@ -423,10 +400,6 @@ static int qesd_init_in (HWVoiceIn *hw, struct audsettings *as)
     ESDVoiceIn *esd = (ESDVoiceIn *) hw;
     struct audsettings obt_as = *as;
     int esdfmt = ESD_STREAM | ESD_RECORD;
-    int err;
-    sigset_t set, old_set;
-
-    sigfillset (&set);
 
     esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
     switch (as->fmt) {
@@ -461,44 +434,25 @@ static int qesd_init_in (HWVoiceIn *hw, struct audsettings *as)
         return -1;
     }
 
-    esd->fd = -1;
-
-    err = pthread_sigmask (SIG_BLOCK, &set, &old_set);
-    if (err) {
-        qesd_logerr (err, "pthread_sigmask failed\n");
-        goto fail1;
-    }
-
     esd->fd = esd_record_stream (esdfmt, as->freq, conf.adc_host, NULL);
     if (esd->fd < 0) {
         qesd_logerr (errno, "esd_record_stream failed\n");
-        goto fail2;
+        goto fail1;
     }
 
     if (audio_pt_init (&esd->pt, qesd_thread_in, esd, AUDIO_CAP, AUDIO_FUNC)) {
-        goto fail3;
-    }
-
-    err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
-    if (err) {
-        qesd_logerr (err, "pthread_sigmask(restore) failed\n");
+        goto fail2;
     }
 
     return 0;
 
- fail3:
+ fail2:
     if (close (esd->fd)) {
         qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
                      AUDIO_FUNC, esd->fd);
     }
     esd->fd = -1;
 
- fail2:
-    err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
-    if (err) {
-        qesd_logerr (err, "pthread_sigmask(restore) failed\n");
-    }
-
  fail1:
     qemu_free (esd->pcm_buf);
     esd->pcm_buf = NULL;
-- 
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