unshare.2: Note flags implied by CLONE_THREAD and CLONE_VM

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man2/unshare.2 b/man2/unshare.2
index 1c8f109be073ba7ada74c1adc469e15a8827a340..d61449c96fb85d69fd648390851563a6747d8777 100644 (file)
--- a/man2/unshare.2
+++ b/man2/unshare.2
@@ -251,6 +251,14 @@ can be specified in
 if the caller is single threaded (i.e., it is not sharing
 its address space with another process or thread).
 In this case, these flags have no effect.
+(Note also that specifying
+.BR CLONE_THREAD
+automatically implies
+.BR CLONE_VM ,
+and specifying
+.BR CLONE_VM
+automatically implies
+.BR CLONE_SIGHAND .)
 .\" As at 3.9, the following forced implications also apply,
 .\" although the relevant flags are not yet implemented.
 .\" If CLONE_THREAD is set force CLONE_VM.