| /* Message-writing for the dynamic linker. NaCl version. |
| Copyright (C) 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 <nacl-interfaces.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) |
| { |
| for (size_t i = 0; i < niov; ++i) |
| { |
| size_t wrote; |
| if (__nacl_irt_fdio.write (fd, iov[i].iov_base, iov[i].iov_len, |
| &wrote) != 0 |
| || wrote != iov[i].iov_len) |
| /* The write failed, so don't bother trying any more. */ |
| break; |
| } |
| } |