From ee4dd307bb6f366c87d4b408025ed909e55a168f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Forsman?= <bjorn.forsman@gmail.com>
Date: Thu, 17 Oct 2019 23:02:55 +0200
Subject: [PATCH] libredirect: add 'openat64'

---
 pkgs/by-name/li/libredirect/libredirect.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/pkgs/by-name/li/libredirect/libredirect.c b/pkgs/by-name/li/libredirect/libredirect.c
index bb88453216a6..011b5e6965c5 100644
--- a/pkgs/by-name/li/libredirect/libredirect.c
+++ b/pkgs/by-name/li/libredirect/libredirect.c
@@ -197,6 +197,24 @@ WRAPPER(int, openat)(int dirfd, const char * path, int flags, ...)
 }
 WRAPPER_DEF(openat)
 
+// In musl libc, openat64 is simply a macro for openat
+#if !defined(__APPLE__) && !defined(openat64)
+WRAPPER(int, openat64)(int dirfd, const char * path, int flags, ...)
+{
+    int (*openat64_real) (int, const char *, int, ...) = LOOKUP_REAL(openat64);
+    mode_t mode = 0;
+    if (open_needs_mode(flags)) {
+        va_list ap;
+        va_start(ap, flags);
+        mode = va_arg(ap, mode_t);
+        va_end(ap);
+    }
+    char buf[PATH_MAX];
+    return openat64_real(dirfd, rewrite(path, buf), flags, mode);
+}
+WRAPPER_DEF(openat64)
+#endif
+
 WRAPPER(FILE *, fopen)(const char * path, const char * mode)
 {
     FILE * (*fopen_real) (const char *, const char *) = LOOKUP_REAL(fopen);