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      1 /*
      2  * Copyright 2012, The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *     http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include <portability.h>
     18 #include <fcntl.h>
     19 #include <stdarg.h>
     20 #include <fcntl_portable.h>
     21 
     22 extern int __fcntl64(int, int, void *);
     23 
     24 int WRAP(fcntl)(int fd, int cmd, ...)
     25 {
     26     va_list ap;
     27     void * arg;
     28 
     29     va_start(ap, cmd);
     30     arg = va_arg(ap, void *);
     31     va_end(ap);
     32 
     33     if (cmd == F_GETLK64 ||
     34         cmd == F_SETLK64 ||
     35         cmd == F_SETLKW64) {
     36         struct flock64 x86_flock64;
     37         int result = __fcntl64(fd, cmd, (void *) &x86_flock64);
     38 
     39         struct flock64_portable * flock64 = (struct flock64_portable *) arg;
     40 
     41         flock64->l_type = x86_flock64.l_type;
     42         flock64->l_whence = x86_flock64.l_whence;
     43         flock64->l_start = x86_flock64.l_start;
     44         flock64->l_len = x86_flock64.l_len;
     45         flock64->l_pid = x86_flock64.l_pid;
     46 
     47         return result;
     48     }
     49     else {
     50         return __fcntl64(fd, cmd, arg);
     51     }
     52 }
     53 
     54