dlopen.3: ATTRIBUTES: Note functions that are thread-safe

After research, we think
* dlopen(),
* dlmopen(),
* dlclose()
are thread-safe. But, there are not markings of them in
glibc document.

[mtk: Split out patch for formerly single dlopen.3 page]

Signed-off-by: Zeng Linggang <zenglg.jy@cn.fujitsu.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man3/dlopen.3 b/man3/dlopen.3
index 426f04e1bac9332d9718fe9af6b26fc8dda8469b..937934c832d1d42102e4e177808f69dfb57e9f70 100644 (file)
--- a/man3/dlopen.3
+++ b/man3/dlopen.3
@@ -329,6 +329,20 @@ and
 are present in glibc 2.0 and later.
 .BR dlmopen ()
 first appeared in glibc 2.3.4.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lbw30 lb lb
+l l l.
+Interface      Attribute       Value
+T{
+.BR dlopen (),
+.BR dlmopen (),
+.BR dlclose ()
+T}     Thread safety   MT-Safe
+.TE
 .SH CONFORMING TO
 POSIX.1-2001 describes
 .BR dlclose ()