6433ec22b1
Linker --wrap option resolves to __wrap_symbol for undefined symbol. During the compilation of host libportable.a, __HOST__ is defined to rename all portable functions to __wrap_symbol, and the real function to __real_symbol. This way libportable.a can be validated at host w/o changes of user's source code. See http://sourceware.org/binutils/docs/ld/Options.html Change-Id: Idcbe53dd642536f3dc2be85a875f95535b9dc0b1
154 lines
4.0 KiB
C
154 lines
4.0 KiB
C
/*
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* Copyright 2012, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <portability.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <portability.h>
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#include <fcntl_portable.h>
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#include <filefd_portable.h>
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#define PORTABLE_TAG "open_portable"
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#include <log_portable.h>
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#if O_CREAT_PORTABLE==O_CREAT
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#error Bad build environment
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#endif
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static inline int open_flags_pton(int flags)
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{
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int mipsflags = flags & O_ACCMODE_PORTABLE;
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ALOGV("%s(flags:0x%x) {", __func__, flags);
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if (flags & O_CREAT_PORTABLE)
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mipsflags |= O_CREAT;
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if (flags & O_EXCL_PORTABLE)
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mipsflags |= O_EXCL;
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if (flags & O_NOCTTY_PORTABLE)
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mipsflags |= O_NOCTTY;
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if (flags & O_TRUNC_PORTABLE)
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mipsflags |= O_TRUNC;
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if (flags & O_APPEND_PORTABLE)
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mipsflags |= O_APPEND;
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if (flags & O_NONBLOCK_PORTABLE)
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mipsflags |= O_NONBLOCK;
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if (flags & O_SYNC_PORTABLE)
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mipsflags |= O_SYNC;
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if (flags & FASYNC_PORTABLE)
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mipsflags |= FASYNC;
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if (flags & O_DIRECT_PORTABLE)
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mipsflags |= O_DIRECT;
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if (flags & O_LARGEFILE_PORTABLE)
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mipsflags |= O_LARGEFILE;
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if (flags & O_DIRECTORY_PORTABLE)
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mipsflags |= O_DIRECTORY;
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if (flags & O_NOFOLLOW_PORTABLE)
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mipsflags |= O_NOFOLLOW;
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if (flags & O_NOATIME_PORTABLE)
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mipsflags |= O_NOATIME;
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if (flags & O_NDELAY_PORTABLE)
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mipsflags |= O_NDELAY;
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ALOGV("%s: return(mipsflags:0x%x); }", __func__, mipsflags);
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return mipsflags;
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}
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extern int __open(const char*, int, int);
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int WRAP(open)(const char *pathname, int flags, ...)
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{
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mode_t mode = 0;
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int native_flags;
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int fd;
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ALOGV(" ");
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ALOGV("%s(pathname:%p, flags:0x%x, ...) {", __func__,
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pathname, flags);
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flags |= O_LARGEFILE_PORTABLE;
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if (flags & O_CREAT_PORTABLE) {
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va_list args;
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va_start(args, flags);
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mode = (mode_t) va_arg(args, int);
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va_end(args);
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}
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native_flags = open_flags_pton(flags);
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fd = __open(pathname, native_flags, mode);
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if (fd == -1) {
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/* Can't print pathname as a string, might be bogus */
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ALOGV("%s: fd = %d = __open(pathname:%p, native_flags:0x%x, mode:0x%x);", __func__,
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fd, pathname, native_flags, mode);
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} else {
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if (flags & O_CLOEXEC) {
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filefd_CLOEXEC_enabled(fd);
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} else {
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filefd_CLOEXEC_disabled(fd);
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}
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}
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ALOGV("%s: return(fd:%d); }", __func__, fd);
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return fd;
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}
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extern int __openat(int, const char*, int, int);
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int WRAP(openat)(int dirfd, const char *pathname, int flags, ...)
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{
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mode_t mode = 0;
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int native_flags;
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int fd;
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ALOGV(" ");
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ALOGV("%s(dirfd:%d, pathname:0x%p, flags:0x%x, ...) {", __func__,
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dirfd, pathname, flags);
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flags |= O_LARGEFILE_PORTABLE;
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if (flags & O_CREAT_PORTABLE) {
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va_list args;
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va_start(args, flags);
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mode = (mode_t) va_arg(args, int);
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va_end(args);
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}
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native_flags = open_flags_pton(flags);
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fd = __openat(dirfd, pathname, native_flags, mode);
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if (fd == -1) {
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ALOGV("%s: fd = %d = __open(pathname:0x%p, native_flags:0x%x, mode:0x%d);", __func__,
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fd, pathname, native_flags, mode);
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} else {
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if (flags & O_CLOEXEC) {
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filefd_CLOEXEC_enabled(fd);
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} else {
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filefd_CLOEXEC_disabled(fd);
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}
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}
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ALOGV("%s: return(fd:%d); }", __func__, fd);
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return fd;
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}
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