[PATCH v4 8/8] libtracefs: Hide non API functions

["Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>]

There are internal library functions, which are not declared as a static.
They are used inside the library from different files. Hide them from
the library users, as they are not part of the API:
 trace_append_file()
 str_read_file()

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 lib/tracefs/include/tracefs-local.h | 2 ++
 lib/tracefs/tracefs-events.c        | 2 +-
 lib/tracefs/tracefs-utils.c         | 3 ++-
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/tracefs/include/tracefs-local.h b/lib/tracefs/include/tracefs-local.h
index 08b67fa9..9cc371b4 100644
--- a/lib/tracefs/include/tracefs-local.h
+++ b/lib/tracefs/include/tracefs-local.h
@@ -6,6 +6,8 @@
 #ifndef _TRACE_FS_LOCAL_H
 #define _TRACE_FS_LOCAL_H
 
+#define __hidden __attribute__((visibility ("hidden")))
+
 /* Can be overridden */
 void warning(const char *fmt, ...);
 int str_read_file(const char *file, char **buffer);
diff --git a/lib/tracefs/tracefs-events.c b/lib/tracefs/tracefs-events.c
index f2c6046c..80a25ee5 100644
--- a/lib/tracefs/tracefs-events.c
+++ b/lib/tracefs/tracefs-events.c
@@ -210,7 +210,7 @@ static char **add_list_string(char **list, const char *name, int len)
 	return list;
 }
 
-char *trace_append_file(const char *dir, const char *name)
+__hidden char *trace_append_file(const char *dir, const char *name)
 {
 	char *file;
 	int ret;
diff --git a/lib/tracefs/tracefs-utils.c b/lib/tracefs/tracefs-utils.c
index 227990a9..326b4559 100644
--- a/lib/tracefs/tracefs-utils.c
+++ b/lib/tracefs/tracefs-utils.c
@@ -15,6 +15,7 @@
 #include <unistd.h>
 
 #include "tracefs.h"
+#include "tracefs-local.h"
 
 #define TRACEFS_PATH "/sys/kernel/tracing"
 #define DEBUGFS_PATH "/sys/kernel/debug"
@@ -188,7 +189,7 @@ void tracefs_put_tracing_file(char *name)
 	free(name);
 }
 
-int str_read_file(const char *file, char **buffer)
+__hidden int str_read_file(const char *file, char **buffer)
 {
 	char stbuf[BUFSIZ];
 	char *buf = NULL;
-- 
2.28.0