[newlib-cygwin/main] Cygwin: export XATTR_{NAME,SIZE,LIST}_MAX

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=538b29a8da8661eceab9b7329d24625256a8d469

commit 538b29a8da8661eceab9b7329d24625256a8d469
Author:     Philippe Cerfon <philcerf@gmail.com>
AuthorDate: Tue May 30 13:16:18 2023 +0200
Commit:     Corinna Vinschen <corinna@vinschen.de>
CommitDate: Fri Jun 16 21:44:41 2023 +0200

    Cygwin: export XATTR_{NAME,SIZE,LIST}_MAX
    
    These are used for example by CPython.
    
    Signed-off-by: Philippe Cerfon <philcerf@gmail.com>
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/include/cygwin/limits.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/winsup/cygwin/include/cygwin/limits.h b/winsup/cygwin/include/cygwin/limits.h
index aefc7c7bdba3..ea3e2836a4b8 100644
--- a/winsup/cygwin/include/cygwin/limits.h
+++ b/winsup/cygwin/include/cygwin/limits.h
@@ -56,4 +56,11 @@ details. */
 #define __PATH_MAX 4096
 #define __PIPE_BUF 4096
 
+/* XATTR_NAME_MAX is the maximum XATTR name length excluding the null
+ * terminator. Since only XATTRs in the `user' namespace are allowed and the
+ * `user.' prefix is not stored, the maximum is increased by 5. */
+#define XATTR_NAME_MAX 260
+#define XATTR_SIZE_MAX 65536
+#define XATTR_LIST_MAX 65536
+
 #endif /* _CYGWIN_LIMITS_H__ */