about summary refs log tree commit diff
path: root/manual/llio.texi
diff options
context:
space:
mode:
Diffstat (limited to 'manual/llio.texi')
-rw-r--r--manual/llio.texi3
1 files changed, 3 insertions, 0 deletions
diff --git a/manual/llio.texi b/manual/llio.texi
index b7dbdefeb7..2e497bf512 100644
--- a/manual/llio.texi
+++ b/manual/llio.texi
@@ -3070,6 +3070,9 @@ Unix before @code{ftruncate} was invented, and is retained for backward
 compatibility.
 @end deftypevr
 
+The remaining operating modes are BSD extensions.  They exist only
+on some systems.  On other systems, these macros are not defined.
+
 @comment fcntl.h
 @comment BSD
 @deftypevr Macro int O_SHLOCK