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[PULL,1/2] xen_backend: introduce xenstore_read_uint64 and xenstore_read_fe_uint64

Message ID 1404730021-23411-1-git-send-email-stefano.stabellini@eu.citrix.com
State Accepted
Commit 4aba9eb138e5d68c400de0b116f15217d7a92d3a
Headers show

Commit Message

Stefano Stabellini July 7, 2014, 10:47 a.m. UTC 
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/xen/xen_backend.c         |   18 ++++++++++++++++++
 include/hw/xen/xen_backend.h |    2 ++
 2 files changed, 20 insertions(+)
diff mbox

Patch

diff --git a/hw/xen/xen_backend.c b/hw/xen/xen_backend.c
index 3cd45b4..b2cb22b 100644
--- a/hw/xen/xen_backend.c
+++ b/hw/xen/xen_backend.c
@@ -111,6 +111,19 @@  int xenstore_read_int(const char *base, const char *node, int *ival)
     return rc;
 }
 
+int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval)
+{
+    char *val;
+    int rc = -1;
+
+    val = xenstore_read_str(base, node);
+    if (val && 1 == sscanf(val, "%"SCNu64, uval)) {
+        rc = 0;
+    }
+    g_free(val);
+    return rc;
+}
+
 int xenstore_write_be_str(struct XenDevice *xendev, const char *node, const char *val)
 {
     return xenstore_write_str(xendev->be, node, val);
@@ -146,6 +159,11 @@  int xenstore_read_fe_int(struct XenDevice *xendev, const char *node, int *ival)
     return xenstore_read_int(xendev->fe, node, ival);
 }
 
+int xenstore_read_fe_uint64(struct XenDevice *xendev, const char *node, uint64_t *uval)
+{
+    return xenstore_read_uint64(xendev->fe, node, uval);
+}
+
 /* ------------------------------------------------------------- */
 
 const char *xenbus_strstate(enum xenbus_state state)
diff --git a/include/hw/xen/xen_backend.h b/include/hw/xen/xen_backend.h
index 3b7d96d..3b4125e 100644
--- a/include/hw/xen/xen_backend.h
+++ b/include/hw/xen/xen_backend.h
@@ -74,6 +74,8 @@  char *xenstore_read_be_str(struct XenDevice *xendev, const char *node);
 int xenstore_read_be_int(struct XenDevice *xendev, const char *node, int *ival);
 char *xenstore_read_fe_str(struct XenDevice *xendev, const char *node);
 int xenstore_read_fe_int(struct XenDevice *xendev, const char *node, int *ival);
+int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval);
+int xenstore_read_fe_uint64(struct XenDevice *xendev, const char *node, uint64_t *uval);
 
 const char *xenbus_strstate(enum xenbus_state state);
 struct XenDevice *xen_be_find_xendev(const char *type, int dom, int dev);