Make evemu ABI resilient

Hide the evemu struct, make it versioned, and instead use new/delete
and accessor functions. This should give us enough ABI stability to
run mixed library implementations.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

1 files changed, 11 insertions, 7 deletions

diff --git a/tools/evemu-echo.c b/tools/evemu-echo.c
index d3501ea..e9c89df 100644
--- a/tools/evemu-echo.c
+++ b/tools/evemu-echo.c
@@ -33,16 +33,20 @@
 
 static int evemu_echo_describe(FILE *fp)
 {
-        struct evemu_device dev;
-        int ret;
+        struct evemu_device *dev;
+        int ret = -ENOMEM;
 
-        ret = evemu_read(&dev, fp);
+        dev = evemu_new(0);
+        if (!dev)
+                goto out;
+        ret = evemu_read(dev, fp);
         if (ret <= 0)
-                return ret;
-
-        evemu_write(&dev, stdout);
+                goto out;
 
-        return 0;
+        evemu_write(dev, stdout);
+out:
+        evemu_delete(dev);
+        return ret;
 }
 
 static int evemu_echo_event(FILE *fp)