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Merge "Don't allow MemoryFiles of negative length."

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Narayan Kamath
2014-04-09 09:07:29 +00:00
committed by Gerrit Code Review
parent 3fb2b7132b f626ca2c96
commit a5608acbd7
1 changed files with 7 additions and 2 deletions
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9
core/java/android/os/MemoryFile.java
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@@ -63,12 +63,17 @@ public class MemoryFile
* Allocates a new ashmem region. The region is initially not purgable.
*
* @param name optional name for the file (can be null).
* @param length of the memory file in bytes.
* @param length of the memory file in bytes, must be non-negative.
* @throws IOException if the memory file could not be created.
*/
public MemoryFile(String name, int length) throws IOException {
mLength = length;
mFD = native_open(name, length);
if (length >= 0) {
mFD = native_open(name, length);
} else {
throw new IOException("Invalid length: " + length);
}
if (length > 0) {
mAddress = native_mmap(mFD, length, PROT_READ | PROT_WRITE);
} else {