b36efa4343
Triggers -Wundef, which is on in -Weverything. Bug: http://b/31496165 Change-Id: Ib06107073f7dd1d584c19c222d0430da9d35630b
93 lines
3 KiB
C++
93 lines
3 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <fcntl.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "private/libc_logging.h"
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extern "C" int __openat(int, const char*, int, int);
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static inline int force_O_LARGEFILE(int flags) {
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#if defined(__LP64__)
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return flags; // No need, and aarch64's strace gets confused.
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#else
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return flags | O_LARGEFILE;
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#endif
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}
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int creat(const char* pathname, mode_t mode) {
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return open(pathname, O_CREAT | O_TRUNC | O_WRONLY, mode);
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}
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__strong_alias(creat64, creat);
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int open(const char* pathname, int flags, ...) {
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mode_t mode = 0;
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if ((flags & O_CREAT) != 0) {
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va_list args;
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va_start(args, flags);
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mode = static_cast<mode_t>(va_arg(args, int));
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va_end(args);
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}
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return __openat(AT_FDCWD, pathname, force_O_LARGEFILE(flags), mode);
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}
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__strong_alias(open64, open);
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int __open_2(const char* pathname, int flags) {
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if (__predict_false((flags & O_CREAT) != 0)) {
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__fortify_fatal("open(O_CREAT): called without specifying a mode");
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}
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return __openat(AT_FDCWD, pathname, force_O_LARGEFILE(flags), 0);
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}
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int openat(int fd, const char *pathname, int flags, ...) {
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mode_t mode = 0;
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if ((flags & O_CREAT) != 0) {
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va_list args;
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va_start(args, flags);
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mode = static_cast<mode_t>(va_arg(args, int));
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va_end(args);
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}
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return __openat(fd, pathname, force_O_LARGEFILE(flags), mode);
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}
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__strong_alias(openat64, openat);
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int __openat_2(int fd, const char* pathname, int flags) {
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if ((flags & O_CREAT) != 0) {
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__fortify_fatal("openat(O_CREAT): called without specifying a mode");
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}
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return __openat(fd, pathname, force_O_LARGEFILE(flags), 0);
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}
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