From 5d1e6325f26380aea9a12d126571fcee3c30af31 Mon Sep 17 00:00:00 2001
From: Wolfgang Hommel <wolfgang.hommel@unibw.de>
Date: Tue, 3 Sep 2019 12:01:33 +0200
Subject: Add FAKE_SETTIME to CFLAGS to intercept time-setting calls (#179)

---
 README | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'README')

diff --git a/README b/README
index 66cc135..d146c45 100644
--- a/README
+++ b/README
@@ -456,6 +456,16 @@ a lot of processes are started (e.g., servers handling many containers
 or similar virtualization mechanisms).
 
 
+Intercepting time-setting calls
+-------------------------------
+
+libfaketime can be compiled with the CFLAG "-DFAKE_SETTIME" in order
+to also intercept time-setting functions, i.e., clock_settime(),
+settimeofday(), and adjtime(). Instead of passing the timestamp a
+program sets through to the system, only the FAKETIME environment
+variable will be adjusted accordingly.
+
+
 4f) Faking the date and time system-wide
 ----------------------------------------
 
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