[Xen-devel] [PATCH 11/27 v8] xen/arm: vpl011: Add a new console_init function in xenconsole

[Bhupinder Thakur <bhupinder.thakur@xxxxxxxxxx>]

This patch introduces a new console_init function. This function
initializes the console structure.

Signed-off-by: Bhupinder Thakur <bhupinder.thakur@xxxxxxxxxx>
---
CC: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
CC: Wei Liu <wei.liu2@xxxxxxxxxx>
CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
CC: Julien Grall <julien.grall@xxxxxxx>

Changes since v5:
- Split this change in a separate patch.

 tools/console/daemon/io.c | 65 ++++++++++++++++++++++++++++-------------------
 1 file changed, 39 insertions(+), 26 deletions(-)

diff --git a/tools/console/daemon/io.c b/tools/console/daemon/io.c
index a2a3496..1da08d7 100644
--- a/tools/console/daemon/io.c
+++ b/tools/console/daemon/io.c
@@ -655,20 +655,51 @@ static bool watch_domain(struct domain *dom, bool watch)
        return success;
 }
 
-
-static struct domain *create_domain(int domid)
+static int console_init(struct console *con, struct domain *dom)
 {
-       struct domain *dom;
        char *s;
+       int err = -1;
        struct timespec ts;
-       struct console *con;
 
        if (clock_gettime(CLOCK_MONOTONIC, &ts) < 0) {
                dolog(LOG_ERR, "Cannot get time of day %s:%s:L%d",
                      __FILE__, __FUNCTION__, __LINE__);
-               return NULL;
+               return err;
        }
 
+       con->master_fd = -1;
+       con->master_pollfd_idx = -1;
+       con->slave_fd = -1;
+       con->log_fd = -1;
+       con->ring_ref = -1;
+       con->local_port = -1;
+       con->remote_port = -1;
+       con->xce_pollfd_idx = -1;
+       con->next_period = ((long long)ts.tv_sec * 1000) + (ts.tv_nsec / 
1000000) + RATE_LIMIT_PERIOD;
+       con->d = dom;
+       con->xspath = xs_get_domain_path(xs, dom->domid);
+       s = realloc(con->xspath, strlen(con->xspath) +
+                   strlen("/console") + 1);
+       if (s) {
+               con->xspath = s;
+               strcat(con->xspath, "/console");
+               err = 0;
+       }
+
+       return err;
+}
+
+static void console_free(struct console *con)
+{
+       if (con->xspath)
+               free(con->xspath);
+}
+
+static struct domain *create_domain(int domid)
+{
+       struct domain *dom;
+       struct console *con;
+
        dom = calloc(1, sizeof *dom);
        if (dom == NULL) {
                dolog(LOG_ERR, "Out of memory %s:%s():L%d",
@@ -677,28 +708,10 @@ static struct domain *create_domain(int domid)
        }
 
        dom->domid = domid;
-
        con = &dom->console;
-       con->xspath = xs_get_domain_path(xs, dom->domid);
-       s = realloc(con->xspath, strlen(con->xspath) +
-                   strlen("/console") + 1);
-       if (s == NULL)
-               goto out;
-       con->xspath = s;
-       strcat(con->xspath, "/console");
-
-       con->master_fd = -1;
-       con->master_pollfd_idx = -1;
-       con->slave_fd = -1;
-       con->log_fd = -1;
-       con->xce_pollfd_idx = -1;
-       con->d = dom;
-
-       con->next_period = ((long long)ts.tv_sec * 1000) + (ts.tv_nsec / 
1000000) + RATE_LIMIT_PERIOD;
 
-       con->ring_ref = -1;
-       con->local_port = -1;
-       con->remote_port = -1;
+       if (console_init(con, dom))
+               goto out;
 
        if (!watch_domain(dom, true))
                goto out;
@@ -710,7 +723,7 @@ static struct domain *create_domain(int domid)
 
        return dom;
  out:
-       free(con->xspath);
+       console_free(con);
        free(dom);
        return NULL;
 }
-- 
2.7.4


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