manual: readdir, readdir64 are thread-safe

They only modify the state in the dirstream argument, and we
generally do not treat this as a reason to mark a function as
not thread-safe.  For an example, see random_r, which is marked
as thread-safe even though the random state is not protected
by a lock.

1 files changed, 6 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index ec7617d..0dd3057 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2017-04-11  Florian Weimer  <fweimer@redhat.com>
+	    Zack Weinberg  <zackw@panix.com>
+
+	* manual/filesys.texi (Reading/Closing Directory): Mark readdir,
+	readdir64 as thread-safe.  Update warning about readdir_r.
+
 2017-04-10  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
 	* sysdeps/unix/sysv/linux/x86/Implies: New file.