Mercurial > hg
view tests/test-hgk.t @ 31209:dd2364f5180a
localrepo: handle rename with hardlinks properly
In "aftertrans", we rename "journal.*" to "undo.*". We expect "journal.*"
files to disappear after renaming.
However, if "journal.foo" and "undo.foo" refer to a same file (hardlink),
rename may be a no-op, leaving both files on disk, according to Linux
manpage [1]:
If oldpath and newpath are existing hard links referring to the same
file, then rename() does nothing, and returns a suc‐ cess status.
The POSIX specification [2] is not very clear about what to do.
To be safe, remove "undo.*" before the rename so "journal.*" cannot be left
on disk.
[1]: http://man7.org/linux/man-pages/man2/rename.2.html
[2]: http://pubs.opengroup.org/onlinepubs/9699919799/
author | Jun Wu <quark@fb.com> |
---|---|
date | Thu, 02 Mar 2017 21:49:30 -0800 |
parents | 5fb1fc2e1281 |
children |
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Minimal hgk check $ echo "[extensions]" >> $HGRCPATH $ echo "hgk=" >> $HGRCPATH $ hg init repo $ cd repo $ echo a > a $ hg ci -Am adda adding a $ hg debug-cat-file commit 0 tree a0c8bcbbb45c parent 000000000000 author test 0 0 revision 0 branch default phase draft adda $ echo b > b $ hg ci -Am addb adding b $ hg log -T '{node}\n' 102a90ea7b4a3361e4082ed620918c261189a36a 07f4944404050f47db2e5c5071e0e84e7a27bba9 $ hg debug-diff-tree 07f494440405 102a90ea7b4a :000000 100664 000000000000 1e88685f5dde N b b $ hg debug-diff-tree 07f494440405 102a90ea7b4a --patch diff --git a/b b/b new file mode 100644 --- /dev/null +++ b/b @@ -0,0 +1,1 @@ +b Ensure that diff-tree output isn't affected by diffopts $ hg --config diff.noprefix=True debug-diff-tree 07f494440405 102a90ea7b4a :000000 100664 000000000000 1e88685f5dde N b b $ hg --config diff.noprefix=True debug-diff-tree --patch 07f494440405 102a90ea7b4a diff --git a/b b/b new file mode 100644 --- /dev/null +++ b/b @@ -0,0 +1,1 @@ +b $ cd ..