[Xen-changelog] [xen master] libxl: suspend: domain_suspend_callback_common xs errs

[patchbot@xxxxxxx]

commit 62657e313189f9fe86ccd33414a5122de25595a3
Author:     Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
AuthorDate: Thu Dec 5 19:08:34 2013 +0000
Commit:     Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
CommitDate: Mon Mar 17 15:54:00 2014 +0000

    libxl: suspend: domain_suspend_callback_common xs errs
    
    In domain_suspend_callback_common, use libxl__xs_transaction_start in
    a loop, rather than xs_transaction_start and a goto label.
    
    This will improve the error handling, but have no other semantic
    effect.
    
    Signed-off-by: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
    CC: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
    Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
 tools/libxl/libxl_dom.c |   19 +++++++++++--------
 1 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/tools/libxl/libxl_dom.c b/tools/libxl/libxl_dom.c
index 78f1de7..9fec4e7 100644
--- a/tools/libxl/libxl_dom.c
+++ b/tools/libxl/libxl_dom.c
@@ -1050,6 +1050,7 @@ static void domain_suspend_callback_common(libxl__egc 
*egc,
     char *state = "suspend";
     int watchdog;
     xs_transaction_t t;
+    int rc;
 
     /* Convenience aliases */
     const uint32_t domid = dss->domid;
@@ -1116,17 +1117,19 @@ static void domain_suspend_callback_common(libxl__egc 
*egc,
      */
     if (!domain_suspend_pvcontrol_acked(state)) {
         LOG(ERROR, "guest didn't acknowledge suspend, cancelling request");
-    retry_transaction:
-        t = xs_transaction_start(CTX->xsh);
+        for (;;) {
+            rc = libxl__xs_transaction_start(gc, &t);
+            if (rc) goto err;
 
-        state = libxl__domain_pvcontrol_read(gc, t, domid);
+            state = libxl__domain_pvcontrol_read(gc, t, domid);
 
-        if (!domain_suspend_pvcontrol_acked(state))
-            libxl__domain_pvcontrol_write(gc, t, domid, "");
+            if (!domain_suspend_pvcontrol_acked(state))
+                libxl__domain_pvcontrol_write(gc, t, domid, "");
 
-        if (!xs_transaction_end(CTX->xsh, t, 0))
-            if (errno == EAGAIN)
-                goto retry_transaction;
+            rc = libxl__xs_transaction_commit(gc, &t);
+            if (!rc) break;
+            if (rc<0) goto err;
+        }
     }
 
     /*
--
generated by git-patchbot for /home/xen/git/xen.git#master

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