[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/hurd/fd-read.c b/ap/libc/glibc/glibc-2.22/hurd/fd-read.c
new file mode 100644
index 0000000..cdedd2b
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/hurd/fd-read.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1993-2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <unistd.h>
+#include <hurd.h>
+#include <hurd/fd.h>
+#include <string.h>
+
+error_t
+_hurd_fd_read (struct hurd_fd *fd, void *buf, size_t *nbytes, loff_t offset)
+{
+ error_t err;
+ char *data;
+ mach_msg_type_number_t nread;
+
+ error_t readfd (io_t port)
+ {
+ return __io_read (port, &data, &nread, offset, *nbytes);
+ }
+
+ data = buf;
+ nread = *nbytes;
+ if (err = HURD_FD_PORT_USE (fd, _hurd_ctty_input (port, ctty, readfd)))
+ return err;
+
+ if (data != buf)
+ {
+ if (nread > *nbytes) /* Sanity check for bogus server. */
+ {
+ __vm_deallocate (__mach_task_self (), (vm_address_t) data, nread);
+ return EGRATUITOUS;
+ }
+ memcpy (buf, data, nread);
+ __vm_deallocate (__mach_task_self (), (vm_address_t) data, nread);
+ }
+
+ *nbytes = nread;
+ return 0;
+}