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5041655: (ch) FileLock: negative param and overflow issues

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Reviewed-by: alanb
This commit is contained in:
Brian Burkhalter 2022-02-22 17:24:15 +00:00
parent 7feabee426
commit 6445ee46b5
9 changed files with 247 additions and 45 deletions
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18
src/java.base/share/classes/java/nio/channels/FileChannel.java
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@ -996,7 +996,9 @@ public abstract class FileChannel
* required then a region starting at zero, and no smaller than the
* expected maximum size of the file, should be locked. The zero-argument
* {@link #lock()} method simply locks a region of size {@link
* Long#MAX_VALUE}.
* Long#MAX_VALUE}. If the {@code position} is non-negative and the
* {@code size} is zero, then a lock of size
* {@code Long.MAX_VALUE - position} is returned.
*
* <p> Some operating systems do not support shared locks, in which case a
* request for a shared lock is automatically converted into a request for
@ -1014,7 +1016,10 @@ public abstract class FileChannel
*
* @param size
* The size of the locked region; must be non-negative, and the sum
* {@code position}&nbsp;+&nbsp;{@code size} must be non-negative
* {@code position}&nbsp;+&nbsp;{@code size} must be non-negative.
* A value of zero means to lock all bytes from the specified
* starting position to the end of the file, regardless of whether
* the file is subsequently extended or truncated
*
* @param shared
* {@code true} to request a shared lock, in which case this
@ -1123,7 +1128,9 @@ public abstract class FileChannel
* required then a region starting at zero, and no smaller than the
* expected maximum size of the file, should be locked. The zero-argument
* {@link #tryLock()} method simply locks a region of size {@link
* Long#MAX_VALUE}.
* Long#MAX_VALUE}. If the {@code position} is non-negative and the
* {@code size} is zero, then a lock of size
* {@code Long.MAX_VALUE - position} is returned.
*
* <p> Some operating systems do not support shared locks, in which case a
* request for a shared lock is automatically converted into a request for
@ -1141,7 +1148,10 @@ public abstract class FileChannel
*
* @param size
* The size of the locked region; must be non-negative, and the sum
* {@code position}&nbsp;+&nbsp;{@code size} must be non-negative
* {@code position}&nbsp;+&nbsp;{@code size} must be non-negative.
* A value of zero means to lock all bytes from the specified
* starting position to the end of the file, regardless of whether
* the file is subsequently extended or truncated
*
* @param shared
* {@code true} to request a shared lock,