X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Findex%2Findex.c;h=c193ced27568f94f5764dd7672e8b440aaf104a7;hp=abc0985412fb9c715bf4839196d5589c684c4596;hb=df5b86c84d896eb2d74a8757c234492c1d1fc3be;hpb=4bc5e7c56ff8e70ac916717ad790e322deb40570

diff --git a/src/common/index/index.c b/src/common/index/index.c
index abc098541..c193ced27 100644
--- a/src/common/index/index.c
+++ b/src/common/index/index.c
@@ -17,6 +17,7 @@
  */
 
 #define _GNU_SOURCE
+#define _LGPL_SOURCE
 #include <assert.h>
 #include <sys/stat.h>
 #include <sys/types.h>
@@ -24,6 +25,7 @@
 
 #include <common/common.h>
 #include <common/defaults.h>
+#include <common/compat/endian.h>
 #include <common/utils.h>
 
 #include "index.h"
@@ -49,14 +51,27 @@ int index_create_file(char *path_name, char *stream_name, int uid, int gid,
 	}
 
 	/* Create index directory if necessary. */
-	ret = run_as_mkdir(fullpath, S_IRWXU | S_IRWXG, uid, gid);
+	ret = utils_mkdir(fullpath, S_IRWXU | S_IRWXG, uid, gid);
 	if (ret < 0) {
-		if (ret != -EEXIST) {
+		if (errno != EEXIST) {
 			PERROR("Index trace directory creation error");
 			goto error;
 		}
 	}
 
+	/*
+	 * For tracefile rotation. We need to unlink the old
+	 * file if present to synchronize with the tail of the
+	 * live viewer which could be working on this same file.
+	 * By doing so, any reference to the old index file
+	 * stays valid even if we re-create a new file with the
+	 * same name afterwards.
+	 */
+	ret = utils_unlink_stream_file(fullpath, stream_name, size, count, uid,
+			gid, DEFAULT_INDEX_FILE_SUFFIX);
+	if (ret < 0 && errno != ENOENT) {
+		goto error;
+	}
 	ret = utils_create_stream_file(fullpath, stream_name, size, count, uid,
 			gid, DEFAULT_INDEX_FILE_SUFFIX);
 	if (ret < 0) {