[PATCH] open, openat: document nonstandard FreeBSD, NetBSD O_NOFOLLOW errno

[Paul Eggert]

* doc/posix-functions/open.texi (open):
* doc/posix-functions/openat.texi (openat):
Document that these functions do not set errno to ELOOP when
a symlink is opened with O_NOFOLLOW.
---
 ChangeLog                       |  8 ++++++++
 doc/posix-functions/open.texi   | 10 ++++++++++
 doc/posix-functions/openat.texi | 10 ++++++++++
 3 files changed, 28 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 1f80f39..12dc392 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2014-11-02  Paul Eggert  <address@hidden>
+
+       open, openat: document nonstandard FreeBSD, NetBSD O_NOFOLLOW errno
+       * doc/posix-functions/open.texi (open):
+       * doc/posix-functions/openat.texi (openat):
+       Document that these functions do not set errno to ELOOP when
+       a symlink is opened with O_NOFOLLOW.
+
 2014-10-31  Paul Eggert  <address@hidden>
 
        obstack: add NEWS entry for recent incompatible changes
diff --git a/doc/posix-functions/open.texi b/doc/posix-functions/open.texi
index dd33e82..dce5466 100644
--- a/doc/posix-functions/open.texi
+++ b/doc/posix-functions/open.texi
@@ -35,6 +35,16 @@ read-only descriptor for directories.
 Portability problems not fixed by Gnulib:
 @itemize
 @item
address@hidden ("symlink", O_NOFOLLOW ...)} fails with @code{errno} set to
address@hidden instead of the POSIX-required @code{ELOOP} on some
+platforms:
+FreeBSD 10.1.
address@hidden
address@hidden ("symlink", O_NOFOLLOW ...)} fails with @code{errno} set to
address@hidden instead of the POSIX-required @code{ELOOP} on some
+platforms:
+NetBSD 6.1.
address@hidden
 On Windows, this function returns a file handle in @code{O_TEXT} mode by
 default; this means that it translates @code{'\n'} to CR/LF by default.  Use 
the
 @code{O_BINARY} flag if you need reliable binary I/O.
diff --git a/doc/posix-functions/openat.texi b/doc/posix-functions/openat.texi
index 0042767..fa3eb65 100644
--- a/doc/posix-functions/openat.texi
+++ b/doc/posix-functions/openat.texi
@@ -25,4 +25,14 @@ Solaris 9.
 
 Portability problems not fixed by Gnulib:
 @itemize
address@hidden
address@hidden (fd, "symlink", O_NOFOLLOW ...)} fails with @code{errno}
+set to @code{EMLINK} instead of the POSIX-required @code{ELOOP} on
+some platforms:
+FreeBSD 10.1.
address@hidden
address@hidden (fd, "symlink", O_NOFOLLOW ...)} fails with @code{errno}
+set to @code{EFTYPE} instead of the POSIX-required @code{ELOOP} on
+some platforms:
+NetBSD 6.1.
 @end itemize
-- 
1.9.3