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
54 lines
1.4 KiB
C
54 lines
1.4 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 <fcntl.h>
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#include <stdarg.h>
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#include <fcntl_portable.h>
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extern int __fcntl64(int, int, void *);
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int WRAP(fcntl)(int fd, int cmd, ...)
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{
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va_list ap;
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void * arg;
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va_start(ap, cmd);
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arg = va_arg(ap, void *);
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va_end(ap);
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if (cmd == F_GETLK64 ||
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cmd == F_SETLK64 ||
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cmd == F_SETLKW64) {
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struct flock64 x86_flock64;
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int result = __fcntl64(fd, cmd, (void *) &x86_flock64);
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struct flock64_portable * flock64 = (struct flock64_portable *) arg;
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flock64->l_type = x86_flock64.l_type;
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flock64->l_whence = x86_flock64.l_whence;
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flock64->l_start = x86_flock64.l_start;
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flock64->l_len = x86_flock64.l_len;
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flock64->l_pid = x86_flock64.l_pid;
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return result;
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}
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else {
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return __fcntl64(fd, cmd, arg);
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}
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}
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