X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fsessiond-comm%2Fsessiond-comm.h;h=fca331fe7511efdf84f384f90749cf3abfc4014f;hp=fff9a5aaab7efc6de3016390f31ea24c19db0b06;hb=7bd95aee4660c6419a4a65429fc27754481e7e90;hpb=e368fb4396b9bdb22de16f0c93512c9f6d7ab0b4

diff --git a/src/common/sessiond-comm/sessiond-comm.h b/src/common/sessiond-comm/sessiond-comm.h
index fff9a5aaa..fca331fe7 100644
--- a/src/common/sessiond-comm/sessiond-comm.h
+++ b/src/common/sessiond-comm/sessiond-comm.h
@@ -41,7 +41,12 @@
 #define LTTNG_SESSIOND_COMM_MAX_LISTEN 64
 
 /* Maximum number of FDs that can be sent over a Unix socket */
-#define LTTCOMM_MAX_SEND_FDS           4
+#if defined(__linux__)
+/* Based on the kernel's SCM_MAX_FD which is 253 since 2.6.38 (255 before) */
+#define LTTCOMM_MAX_SEND_FDS           253
+#else
+#define LTTCOMM_MAX_SEND_FDS           16
+#endif
 
 /*
  * Get the error code index from 0 since LTTCOMM_OK start at 1000
@@ -278,7 +283,7 @@ struct lttcomm_session_msg {
 		/* Event data */
 		struct {
 			char channel_name[LTTNG_SYMBOL_NAME_LEN];
-			struct lttng_event event LTTNG_PACKED;
+			struct lttng_event event;
 			/* Length of following filter expression. */
 			uint32_t expression_len;
 			/* Length of following bytecode for filter. */
@@ -297,7 +302,7 @@ struct lttcomm_session_msg {
 		} LTTNG_PACKED enable;
 		struct {
 			char channel_name[LTTNG_SYMBOL_NAME_LEN];
-			struct lttng_event event LTTNG_PACKED;
+			struct lttng_event event;
 			/* Length of following filter expression. */
 			uint32_t expression_len;
 			/* Length of following bytecode for filter. */
@@ -311,14 +316,13 @@ struct lttcomm_session_msg {
 		} LTTNG_PACKED disable;
 		/* Create channel */
 		struct {
-			struct lttng_channel chan LTTNG_PACKED;
-			/* struct lttng_channel_extended is already packed. */
+			struct lttng_channel chan;
 			struct lttng_channel_extended extended;
 		} LTTNG_PACKED channel;
 		/* Context */
 		struct {
 			char channel_name[LTTNG_SYMBOL_NAME_LEN];
-			struct lttng_event_context ctx LTTNG_PACKED;
+			struct lttng_event_context ctx;
 			uint32_t provider_name_len;
 			uint32_t context_name_len;
 		} LTTNG_PACKED context;
@@ -337,18 +341,18 @@ struct lttcomm_session_msg {
 			uint32_t size;
 		} LTTNG_PACKED uri;
 		struct {
-			struct lttng_snapshot_output output LTTNG_PACKED;
+			struct lttng_snapshot_output output;
 		} LTTNG_PACKED snapshot_output;
 		struct {
 			uint32_t wait;
-			struct lttng_snapshot_output output LTTNG_PACKED;
+			struct lttng_snapshot_output output;
 		} LTTNG_PACKED snapshot_record;
 		struct {
 			uint32_t nb_uri;
 			unsigned int timer_interval;	/* usec */
 		} LTTNG_PACKED session_live;
 		struct {
-			struct lttng_save_session_attr attr; /* struct already packed */
+			struct lttng_save_session_attr attr;
 		} LTTNG_PACKED save_session;
 		struct {
 			char shm_path[PATH_MAX];
@@ -411,6 +415,8 @@ struct lttcomm_session_msg {
 			/* An lttng_session_descriptor follows. */
 		} LTTNG_PACKED create_session;
 	} u;
+	/* Count of fds sent. */
+	uint32_t fd_count;
 } LTTNG_PACKED;
 
 #define LTTNG_FILTER_MAX_LEN	65536