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8220793: (fs) No support for changing modification time of symlink

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Reviewed-by: alanb, rriggs
This commit is contained in:
Brian Burkhalter 2019-05-02 13:25:00 -07:00
parent 8e1bb92b09
commit 2c35825433
4 changed files with 207 additions and 14 deletions
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24
src/java.base/unix/classes/sun/nio/fs/UnixFileAttributeViews.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2008, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -73,15 +73,23 @@ class UnixFileAttributeViews {
boolean haveFd = false;
boolean useFutimes = false;
boolean useLutimes = false;
int fd = -1;
try {
fd = file.openForAttributeAccess(followLinks);
if (fd != -1) {
haveFd = true;
useFutimes = futimesSupported();
if (!followLinks) {
useLutimes = lutimesSupported() &&
UnixFileAttributes.get(file, false).isSymbolicLink();
}
if (!useLutimes) {
fd = file.openForAttributeAccess(followLinks);
if (fd != -1) {
haveFd = true;
useFutimes = futimesSupported();
}
}
} catch (UnixException x) {
if (x.errno() != UnixConstants.ENXIO) {
if (!(x.errno() == UnixConstants.ENXIO ||
(x.errno() == UnixConstants.ELOOP && useLutimes))) {
x.rethrowAsIOException(file);
}
}
@ -112,6 +120,8 @@ class UnixFileAttributeViews {
try {
if (useFutimes) {
futimes(fd, accessValue, modValue);
} else if (useLutimes) {
lutimes(file, accessValue, modValue);
} else {
utimes(file, accessValue, modValue);
}
@ -131,6 +141,8 @@ class UnixFileAttributeViews {
try {
if (useFutimes) {
futimes(fd, accessValue, modValue);
} else if (useLutimes) {
lutimes(file, accessValue, modValue);
} else {
utimes(file, accessValue, modValue);
}