[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/elf/dl-writev.h b/ap/libc/glibc/glibc-2.22/elf/dl-writev.h
new file mode 100644
index 0000000..3e6d2f4
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/elf/dl-writev.h
@@ -0,0 +1,56 @@
+/* Message-writing for the dynamic linker. Generic version.
+ Copyright (C) 2013-2015 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 <sys/uio.h>
+#include <ldsodefs.h>
+#include <bits/libc-lock.h>
+
+/* This is used from only one place: dl-misc.c:_dl_debug_vdprintf.
+ Hence it's in a header with the expectation it will be inlined.
+
+ This is writev, but with a constraint added and others loosened:
+
+ 1. Under RTLD_PRIVATE_ERRNO, it must not clobber the private errno
+ when another thread holds the dl_load_lock.
+ 2. It is not obliged to detect and report errors at all.
+ 3. It's not really obliged to deliver a single atomic write
+ (though it may be preferable). */
+
+static inline void
+_dl_writev (int fd, const struct iovec *iov, size_t niov)
+{
+ /* Note that if __writev is an implementation that calls malloc,
+ this will cause linking problems building the dynamic linker. */
+
+#if RTLD_PRIVATE_ERRNO
+ /* We have to take this lock just to be sure we don't clobber the private
+ errno when it's being used by another thread that cares about it.
+ Yet we must be sure not to try calling the lock functions before
+ the thread library is fully initialized. */
+ if (__glibc_unlikely (_dl_starting_up))
+ __writev (fd, iov, niov);
+ else
+ {
+ __rtld_lock_lock_recursive (GL(dl_load_lock));
+ __writev (fd, iov, niov);
+ __rtld_lock_unlock_recursive (GL(dl_load_lock));
+ }
+#else
+ __writev (fd, iov, niov);
+#endif
+}