From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Thu, 29 Mar 2018 20:43:14 +0000 (-0400)
Subject: Fix: erroneous use of kernel consumer error codes
X-Git-Tag: v2.11.0-rc1~315
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=b0cd9aea98fd7f0d3c901263a2d83dd8a2ca7bd2;p=lttng-tools.git

Fix: erroneous use of kernel consumer error codes

Errors related to the kernel consumer are returned in a code path
that is only used by the userspace tracer, probably as a result
of copy-pasting code.

This patch changes the codes to the corresponding CONSUMER32/64
ones and makes them negative to honor the convention indicated
in the function's header.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/src/bin/lttng-sessiond/ust-app.c b/src/bin/lttng-sessiond/ust-app.c
index 38aeaab60..6828660aa 100644
--- a/src/bin/lttng-sessiond/ust-app.c
+++ b/src/bin/lttng-sessiond/ust-app.c
@@ -6334,7 +6334,9 @@ int ust_app_rotate_session(struct ltt_session *session, bool *ust_active)
 					reg->registry->reg.ust->metadata_key,
 					LTTNG_DOMAIN_UST, session);
 			if (ret < 0) {
-				ret = LTTNG_ERR_KERN_CONSUMER_FAIL;
+				ret = reg->bits_per_long == 32 ?
+						-LTTNG_ERR_UST_CONSUMER32_FAIL :
+						-LTTNG_ERR_UST_CONSUMER64_FAIL;
 				goto error;
 			}
 
@@ -6353,7 +6355,9 @@ int ust_app_rotate_session(struct ltt_session *session, bool *ust_active)
 						reg_chan->consumer_key,
 						LTTNG_DOMAIN_UST, session);
 				if (ret < 0) {
-					ret = LTTNG_ERR_KERN_CONSUMER_FAIL;
+					ret = reg->bits_per_long == 32 ?
+							-LTTNG_ERR_UST_CONSUMER32_FAIL :
+							-LTTNG_ERR_UST_CONSUMER64_FAIL;
 					goto error;
 				}
 				ret = consumer_rotate_channel(socket,
@@ -6430,7 +6434,9 @@ int ust_app_rotate_session(struct ltt_session *session, bool *ust_active)
 			ret = rotate_add_channel_pending(registry->metadata_key,
 					LTTNG_DOMAIN_UST, session);
 			if (ret < 0) {
-				ret = LTTNG_ERR_KERN_CONSUMER_FAIL;
+				ret = app->bits_per_long == 32 ?
+						-LTTNG_ERR_UST_CONSUMER32_FAIL :
+						-LTTNG_ERR_UST_CONSUMER64_FAIL;
 				goto error;
 			}
 
@@ -6441,7 +6447,9 @@ int ust_app_rotate_session(struct ltt_session *session, bool *ust_active)
 						ua_chan->key, LTTNG_DOMAIN_UST,
 						session);
 				if (ret < 0) {
-					ret = LTTNG_ERR_KERN_CONSUMER_FAIL;
+					ret = app->bits_per_long == 32 ?
+							-LTTNG_ERR_UST_CONSUMER32_FAIL :
+							-LTTNG_ERR_UST_CONSUMER64_FAIL;
 					goto error;
 				}
 				ret = consumer_rotate_channel(socket, ua_chan->key,