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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 <unistd.h>
     19 #include <fcntl.h>
     20 #include <stdarg.h>
     21 #include <fcntl_portable.h>
     22 
     23 
     24 static inline int x86_change_flags(int flags)
     25 {
     26     int x86flags = flags & O_ACCMODE_PORTABLE;
     27     if (flags & O_CREAT_PORTABLE)
     28         x86flags |= O_CREAT;
     29     if (flags & O_EXCL_PORTABLE)
     30         x86flags |= O_EXCL;
     31     if (flags & O_NOCTTY_PORTABLE)
     32         x86flags |= O_NOCTTY;
     33     if (flags & O_TRUNC_PORTABLE)
     34         x86flags |= O_TRUNC;
     35     if (flags & O_APPEND_PORTABLE)
     36         x86flags |= O_APPEND;
     37     if (flags & O_NONBLOCK_PORTABLE)
     38         x86flags |= O_NONBLOCK;
     39     if (flags & O_SYNC_PORTABLE)
     40         x86flags |= O_SYNC;
     41     if (flags & FASYNC_PORTABLE)
     42         x86flags |= FASYNC;
     43     if (flags & O_DIRECT_PORTABLE)
     44         x86flags |= O_DIRECT;
     45     if (flags & O_LARGEFILE_PORTABLE)
     46         x86flags |= O_LARGEFILE;
     47     if (flags & O_DIRECTORY_PORTABLE)
     48         x86flags |= O_DIRECTORY;
     49     if (flags & O_NOFOLLOW_PORTABLE)
     50         x86flags |= O_NOFOLLOW;
     51     if (flags & O_NOATIME_PORTABLE)
     52         x86flags |= O_NOATIME;
     53     if (flags & O_NDELAY_PORTABLE)
     54         x86flags |= O_NDELAY;
     55 
     56     return x86flags;
     57 }
     58 
     59 extern int  __open(const char*, int, int);
     60 int WRAP(open)(const char *pathname, int flags, ...)
     61 {
     62     mode_t  mode = 0;
     63     flags |= O_LARGEFILE;
     64 
     65     if (flags & O_CREAT)
     66     {
     67         va_list  args;
     68 
     69         va_start(args, flags);
     70         mode = (mode_t) va_arg(args, int);
     71         va_end(args);
     72     }
     73 
     74     return __open(pathname, x86_change_flags(flags), mode);
     75 }
     76