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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 
x86_change_flags(int flags)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);
WRAP(open)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