Add a testsuite for libsigrok.

[libsigrok.git] / backend.c

diff --git a/backend.c b/backend.c
index 389df253f2abe008911fbe9a8346eb92a483c6b6..62a7651753986114e49e9711b2f236c1ddb49046 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -19,6 +19,7 @@
  */
 
 #include <glib.h>
+#include "config.h" /* Needed for HAVE_LIBUSB_1_0 and others. */
 #include "libsigrok.h"
 #include "libsigrok-internal.h"
 
@@ -113,6 +114,96 @@
  * @{
  */
 
+/**
+ * Sanity-check all libsigrok drivers.
+ *
+ * @return SR_OK if all drivers are OK, SR_ERR if one or more have issues.
+ */
+static int sanity_check_all_drivers(void)
+{
+       int i, errors, ret = SR_OK;
+       struct sr_dev_driver **drivers;
+       const char *d;
+
+       sr_spew("Sanity-checking all drivers.");
+
+       drivers = sr_driver_list();
+       for (i = 0; drivers[i]; i++) {
+               errors = 0;
+
+               d = (drivers[i]->name) ? drivers[i]->name : "NULL";
+
+               if (!drivers[i]->name) {
+                       sr_err("No name in driver %d ('%s').", i, d);
+                       errors++;
+               }
+               if (!drivers[i]->longname) {
+                       sr_err("No longname in driver %d ('%s').", i, d);
+                       errors++;
+               }
+               if (drivers[i]->api_version < 1) {
+                       sr_err("API version in driver %d ('%s') < 1.", i, d);
+                       errors++;
+               }
+               if (!drivers[i]->init) {
+                       sr_err("No init in driver %d ('%s').", i, d);
+                       errors++;
+               }
+               if (!drivers[i]->cleanup) {
+                       sr_err("No cleanup in driver %d ('%s').", i, d);
+                       errors++;
+               }
+               if (!drivers[i]->scan) {
+                       sr_err("No scan in driver %d ('%s').", i, d);
+                       errors++;
+               }
+               if (!drivers[i]->dev_list) {
+                       sr_err("No dev_list in driver %d ('%s').", i, d);
+                       errors++;
+               }
+               if (!drivers[i]->dev_clear) {
+                       sr_err("No dev_clear in driver %d ('%s').", i, d);
+                       errors++;
+               }
+               /* Note: config_get() is optional. */
+               if (!drivers[i]->config_set) {
+                       sr_err("No config_set in driver %d ('%s').", i, d);
+                       errors++;
+               }
+               if (!drivers[i]->config_list) {
+                       sr_err("No config_list in driver %d ('%s').", i, d);
+                       errors++;
+               }
+               if (!drivers[i]->dev_open) {
+                       sr_err("No dev_open in driver %d ('%s').", i, d);
+                       errors++;
+               }
+               if (!drivers[i]->dev_close) {
+                       sr_err("No dev_close in driver %d ('%s').", i, d);
+                       errors++;
+               }
+               if (!drivers[i]->dev_acquisition_start) {
+                       sr_err("No dev_acquisition_start in driver %d ('%s').",
+                              i, d);
+                       errors++;
+               }
+               if (!drivers[i]->dev_acquisition_stop) {
+                       sr_err("No dev_acquisition_stop in driver %d ('%s').",
+                              i, d);
+                       errors++;
+               }
+
+               /* Note: 'priv' is allowed to be NULL. */
+
+               if (errors == 0)
+                       continue;
+
+               ret = SR_ERR;
+       }
+
+       return ret;
+}
+
 /**
  * Initialize libsigrok.
  *
@@ -137,6 +228,11 @@ SR_API int sr_init(struct sr_context **ctx)
                return SR_ERR;
        }
 
+       if (sanity_check_all_drivers() < 0) {
+               sr_err("Internal driver error(s), aborting.");
+               return ret;
+       }
+
        /* + 1 to handle when struct sr_context has no members. */
        context = g_try_malloc0(sizeof(struct sr_context) + 1);
 
@@ -149,14 +245,18 @@ SR_API int sr_init(struct sr_context **ctx)
        ret = libusb_init(&context->libusb_ctx);
        if (LIBUSB_SUCCESS != ret) {
                sr_err("libusb_init() returned %s.\n", libusb_error_name(ret));
+               ret = SR_ERR;
                goto done;
        }
 #endif
 
        *ctx = context;
+       context = NULL;
        ret = SR_OK;
 
 done:
+       if (context)
+               g_free(context);
        return ret;
 }