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path: root/services/java/com/android/server/RandomBlock.java
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2013-12-19Move some system services to separate directoriesAmith Yamasani
Refactored the directory structure so that services can be optionally excluded. This is step 1. Will be followed by another change that makes it possible to remove services from the build. Change-Id: Ideacedfd34b5e213217ad3ff4ebb21c4a8e73f85
2013-10-03Reduce EntropyMixer seed size from 4096 to 512 bytes.Alex Klyubin
The suggested seed size from Linux drivers/char/random.c is 512 bytes rather than the 4096 bytes currently used. Change-Id: I3dd55105f0a95ce9cda34b4cf08987b8a28c4ac9
2011-04-04You can't fsync(2) /dev/urandom...Elliott Hughes
...so don't even try. Doing so leads to this: W/EntropyService( 1586): unable to load initial entropy (first boot?) W/EntropyService( 1586): java.io.SyncFailedException: fsync failed: EINVAL (Invalid argument) W/EntropyService( 1586): at java.io.FileDescriptor.sync(FileDescriptor.java:73) W/EntropyService( 1586): at java.io.RandomAccessFile.write(RandomAccessFile.java:694) W/EntropyService( 1586): at java.io.RandomAccessFile.write(RandomAccessFile.java:676) W/EntropyService( 1586): at com.android.server.RandomBlock.toDataOut(RandomBlock.java:88) W/EntropyService( 1586): at com.android.server.RandomBlock.toFile(RandomBlock.java:70) W/EntropyService( 1586): at com.android.server.EntropyService.loadInitialEntropy(EntropyService.java:99) W/EntropyService( 1586): at com.android.server.EntropyService.<init>(EntropyService.java:86) W/EntropyService( 1586): at com.android.server.EntropyService.<init>(EntropyService.java:76) W/EntropyService( 1586): at com.android.server.ServerThread.run(SystemServer.java:139) W/EntropyService( 1586): Caused by: libcore.io.ErrnoException: fsync failed: EINVAL (Invalid argument) W/EntropyService( 1586): at libcore.io.Posix.fsync(Native Method) W/EntropyService( 1586): at libcore.io.BlockGuardOs.fsync(BlockGuardOs.java:39) W/EntropyService( 1586): at java.io.FileDescriptor.sync(FileDescriptor.java:71) W/EntropyService( 1586): ... 8 more Change-Id: I598a9456eccec0ca087f1568d47b6b8e531de8a8
2010-03-01Switch the services library to using the new SlogJoe Onorato
2009-10-04Work on issue #2163789: Way too much loggingDianne Hackborn
Dr.No from mcleron. Change-Id: Iaca2268684f83fe8757e64db0b0e047a19755311
2009-06-18Update RandomBlock to use RandomAccessFile. This helpsNick Kralevich
prevent certain unusual conditions from corrupting the entropy file. (for example, if Android should happen to crash while a write is in progress)
2009-06-18load entropy data at boot. Periodically write entropy data to disk.Nick Kralevich
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-04 09:39:57 +0000