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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_H_ | 5 #ifndef MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_H_ |
6 #define MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_H_ | 6 #define MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <sys/types.h> // For |ssize_t|. | 9 #include <sys/types.h> // For |ssize_t|. |
10 | 10 |
11 #include <deque> | 11 #include <deque> |
12 | 12 |
13 #include "mojo/edk/embedder/platform_handle.h" | 13 #include "mojo/edk/embedder/platform_handle.h" |
| 14 #include "mojo/edk/embedder/scoped_platform_handle.h" |
14 | 15 |
15 struct iovec; // Declared in <sys/uio.h>. | 16 struct iovec; // Declared in <sys/uio.h>. |
16 | 17 |
17 namespace mojo { | 18 namespace mojo { |
18 namespace embedder { | 19 namespace embedder { |
19 | 20 |
20 // The maximum number of handles that can be sent "at once" using | 21 // The maximum number of handles that can be sent "at once" using |
21 // |PlatformChannelSendmsgWithHandles()|. | 22 // |PlatformChannelSendmsgWithHandles()|. |
22 // TODO(vtl): This number is taken from ipc/ipc_message_attachment_set.h: | 23 // TODO(vtl): This number is taken from ipc/ipc_message_attachment_set.h: |
23 // |IPC::MessageAttachmentSet::kMaxDescriptorsPerMessage|. | 24 // |IPC::MessageAttachmentSet::kMaxDescriptorsPerMessage|. |
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54 // (e.g., created using PlatformChannelPair|). (These will be sent in a single | 55 // (e.g., created using PlatformChannelPair|). (These will be sent in a single |
55 // message having one null byte of data and one control message header with all | 56 // message having one null byte of data and one control message header with all |
56 // the file descriptors.) All of the handles must be valid, and there must be at | 57 // the file descriptors.) All of the handles must be valid, and there must be at |
57 // most |kPlatformChannelMaxNumHandles| (and at least one handle). Returns true | 58 // most |kPlatformChannelMaxNumHandles| (and at least one handle). Returns true |
58 // on success, in which case it closes all the handles. | 59 // on success, in which case it closes all the handles. |
59 bool PlatformChannelSendHandles(PlatformHandle h, | 60 bool PlatformChannelSendHandles(PlatformHandle h, |
60 PlatformHandle* handles, | 61 PlatformHandle* handles, |
61 size_t num_handles); | 62 size_t num_handles); |
62 | 63 |
63 // Wrapper around |recvmsg()|, which will extract any attached file descriptors | 64 // Wrapper around |recvmsg()|, which will extract any attached file descriptors |
64 // (in the control message) to |PlatformHandle|s (and append them to | 65 // (in the control message) to |ScopedPlatformHandle|s (and append them to |
65 // |platform_handles|). (This also handles |EINTR|.) | 66 // |platform_handles|). (This also handles |EINTR|.) |
66 ssize_t PlatformChannelRecvmsg(PlatformHandle h, | 67 ssize_t PlatformChannelRecvmsg( |
67 void* buf, | 68 PlatformHandle h, |
68 size_t num_bytes, | 69 void* buf, |
69 std::deque<PlatformHandle>* platform_handles); | 70 size_t num_bytes, |
| 71 std::deque<ScopedPlatformHandle>* platform_handles); |
70 | 72 |
71 } // namespace embedder | 73 } // namespace embedder |
72 } // namespace mojo | 74 } // namespace mojo |
73 | 75 |
74 #endif // MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_H_ | 76 #endif // MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_UTILS_H_ |
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