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ParcelFileDescriptor: add support for non-stream socket pairs.

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For example, we can use this to create SOCK_SEQPACKET socket pairs.

Change-Id: Ief5c1dab3cbbe40a756d37e77968b41511297bec
This commit is contained in:
Mike Lockwood
2014-11-20 12:22:30 -08:00
parent fb0a22eb62
commit ced0c25a40
1 changed files with 16 additions and 2 deletions
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18
core/java/android/os/ParcelFileDescriptor.java
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@@ -395,10 +395,17 @@ public class ParcelFileDescriptor implements Parcelable, Closeable {
* connected to each other. The two sockets are indistinguishable.
*/
public static ParcelFileDescriptor[] createSocketPair() throws IOException {
return createSocketPair(SOCK_STREAM);
}
/**
* @hide
*/
public static ParcelFileDescriptor[] createSocketPair(int type) throws IOException {
try {
final FileDescriptor fd0 = new FileDescriptor();
final FileDescriptor fd1 = new FileDescriptor();
Os.socketpair(AF_UNIX, SOCK_STREAM, 0, fd0, fd1);
Os.socketpair(AF_UNIX, type, 0, fd0, fd1);
return new ParcelFileDescriptor[] {
new ParcelFileDescriptor(fd0),
new ParcelFileDescriptor(fd1) };
@@ -417,11 +424,18 @@ public class ParcelFileDescriptor implements Parcelable, Closeable {
* This can also be used to detect remote crashes.
*/
public static ParcelFileDescriptor[] createReliableSocketPair() throws IOException {
return createReliableSocketPair(SOCK_STREAM);
}
/**
* @hide
*/
public static ParcelFileDescriptor[] createReliableSocketPair(int type) throws IOException {
try {
final FileDescriptor[] comm = createCommSocketPair();
final FileDescriptor fd0 = new FileDescriptor();
final FileDescriptor fd1 = new FileDescriptor();
Os.socketpair(AF_UNIX, SOCK_STREAM, 0, fd0, fd1);
Os.socketpair(AF_UNIX, type, 0, fd0, fd1);
return new ParcelFileDescriptor[] {
new ParcelFileDescriptor(fd0, comm[0]),
new ParcelFileDescriptor(fd1, comm[1]) };