Update

[l4.git] / l4 / pkg / l4re-core / uclibc / lib / contrib / uclibc / libc / sysdeps / linux / common / readv.c

diff --git a/l4/pkg/l4re-core/uclibc/lib/contrib/uclibc/libc/sysdeps/linux/common/readv.c b/l4/pkg/l4re-core/uclibc/lib/contrib/uclibc/libc/sysdeps/linux/common/readv.c
new file mode 100644 (file)
index 0000000..9418ea4
--- /dev/null
+++ b/l4/pkg/l4re-core/uclibc/lib/contrib/uclibc/libc/sysdeps/linux/common/readv.c
@@ -0,0 +1,30 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * readv() for uClibc
+ *
+ * Copyright (C) 2006 by Steven J. Hill <sjhill@realitydiluted.com>
+ * Copyright (C) 2000-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <sys/uio.h>
+#include <cancel.h>
+
+/* We should deal with kernel which have a smaller UIO_FASTIOV as well
+   as a very big count.  */
+static ssize_t __NC(readv)(int fd, const struct iovec *vector, int count)
+{
+       ssize_t bytes_read = INLINE_SYSCALL(readv, 3, fd, vector, count);
+
+       if (bytes_read >= 0 || errno != EINVAL || count <= UIO_FASTIOV)
+               return bytes_read;
+
+       /* glibc tries again, but we do not. */
+       /* return __atomic_readv_replacement (fd, vector, count); */
+
+       return -1;
+}
+CANCELLABLE_SYSCALL(ssize_t, readv, (int fd, const struct iovec *vector, int count),
+                   (fd, vector, count))