[PATCH v2] libtraceevent: Make sure 32 bit works on 64 bit file systems

[Steven Rostedt <rostedt@xxxxxxxxxxx>]

From: "Steven Rostedt (Google)" <rostedt@xxxxxxxxxxx>

As stat() can overflow if a 32 bit user space reads a file on a file
system that has inodes greater than MAX_INT. Compile with
_FILE_OFFSET_BITS=64 that mitigates this problem on 32 bit user space.

Reported-by: Mike Frysinger <vapier@xxxxxxxxxx>
Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
---
 Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Makefile b/Makefile
index 965ff47eae7d..a8a56b6773be 100644
--- a/Makefile
+++ b/Makefile
@@ -130,6 +130,9 @@ else
   CFLAGS := -g -Wall
 endif
 
+# Make sure 32 bit stat() works on large file systems
+CFLAGS += -D_FILE_OFFSET_BITS=64
+
 LIBS ?= -ldl
 export LIBS
 
-- 
2.35.1