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view tests/test-manifest.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 | bbe56e07e07a |
children | 4441705b7111 |
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Source bundle was generated with the following script: # hg init # echo a > a # ln -s a l # hg ci -Ama -d'0 0' # mkdir b # echo a > b/a # chmod +x b/a # hg ci -Amb -d'1 0' $ hg init $ hg -q pull "$TESTDIR/bundles/test-manifest.hg" The next call is expected to return nothing: $ hg manifest $ hg co 3 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg manifest a b/a l $ hg files -vr . 2 a 2 x b/a (glob) 1 l l $ hg files -r . -X b a l $ hg manifest -v 644 a 755 * b/a 644 @ l $ hg manifest --debug b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 644 a b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 755 * b/a 047b75c6d7a3ef6a2243bd0e99f94f6ea6683597 644 @ l $ hg manifest -r 0 a l $ hg manifest -r 1 a b/a l $ hg manifest -r tip a b/a l $ hg manifest tip a b/a l $ hg manifest --all a b/a l The next two calls are expected to abort: $ hg manifest -r 2 abort: unknown revision '2'! [255] $ hg manifest -r tip tip abort: please specify just one revision [255]