Adding upstream version 0.0~git20221206.8b7148f.upstream/0.0_git20221206.8b7148f

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 24 insertions, 0 deletions

diff --git a/libc-bottom-half/cloudlibc/src/libc/sys/uio/preadv.c b/libc-bottom-half/cloudlibc/src/libc/sys/uio/preadv.c
new file mode 100644
index 0000000..36f882d
--- /dev/null
+++ b/libc-bottom-half/cloudlibc/src/libc/sys/uio/preadv.c
@@ -0,0 +1,24 @@
+// Copyright (c) 2015-2016 Nuxi, https://nuxi.nl/
+//
+// SPDX-License-Identifier: BSD-2-Clause
+
+#include <sys/types.h>
+#include <sys/uio.h>
+
+#include <wasi/api.h>
+#include <errno.h>
+
+ssize_t preadv(int fildes, const struct iovec *iov, int iovcnt, off_t offset) {
+  if (iovcnt < 0 || offset < 0) {
+    errno = EINVAL;
+    return -1;
+  }
+  size_t bytes_read;
+  __wasi_errno_t error = __wasi_fd_pread(
+      fildes, (const __wasi_iovec_t *)iov, iovcnt, offset, &bytes_read);
+  if (error != 0) {
+    errno = error;
+    return -1;
+  }
+  return bytes_read;
+}