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 #define _GNU_SOURCE /* GLibc compatibility to declare pipe2(2) */
18 #include <portability.h>
19 #include <unistd.h>
20 #include <fcntl.h>
21
22 #include <portability.h>
23 #include <asm/unistd.h>
24 #include <asm/unistd-portable.h>
25
26 #include <fcntl_portable.h>
27 #include <asm/unistd-portable.h>
28 #include <asm/unistd.h>
29 #include <filefd_portable.h>
30
31
32 #define PORTABLE_TAG "pipe_portable"
33 #include <log_portable.h>
34
35 extern int syscall(int, ...);
36
37
38 /* NOTE: LTP defaults to using O_NONBLOCK even if O_NONBLOCK is defined */
39
40
41 /*
42 * Portable to Native event flags mapper.
43 */
tdf_flags_pton(int portable_flags)44 static inline int tdf_flags_pton(int portable_flags)
45 {
46 int native_flags = 0;
47
48 ALOGV("%s(portable_flags:0x%x) {", __func__, portable_flags);
49
50 if (portable_flags & O_NONBLOCK_PORTABLE) {
51 native_flags |= O_NONBLOCK;
52 }
53
54 if (portable_flags & O_CLOEXEC_PORTABLE) {
55 native_flags |= O_CLOEXEC;
56 }
57
58 ALOGV("%s: return(native_flags:%d); }", __func__, native_flags);
59 return native_flags;
60 }
61
62
WRAP(pipe2)63 int WRAP(pipe2)(int pipefd[2], int portable_flags) {
64 int native_flags;
65 int rv;
66
67 ALOGV(" ");
68 ALOGV("%s(pipefd[2]:%p, portable_flags:0x%x) {", __func__,
69 pipefd, portable_flags);
70
71 native_flags = tdf_flags_pton(portable_flags);
72
73 rv = REAL(pipe2)(pipefd, native_flags);
74 if (rv >= 0) {
75 ALOGV("%s: pipe2() returned pipefd[0]:%d, pipefd[1]:%d", __func__,
76 pipefd[0], pipefd[1]);
77
78 if (native_flags & O_CLOEXEC) {
79 filefd_CLOEXEC_enabled(pipefd[0]);
80 filefd_CLOEXEC_enabled(pipefd[1]);
81 }
82 }
83
84 ALOGV("%s: return(rv:%d); }", __func__, rv);
85 return rv;
86 }
87
88