rust: Switch to the memmap2-rs crate
https://github.com/RazrFalcon/memmap2-rs
This is a fork of the original memmap crate which appears to be unmaintained:
https://github.com/danburkert/memmap-rs/issues/90
This fork is the most popular according to https://crates.io/keywords/mmap
Differential Revision: https://phab.mercurial-scm.org/D11397
#require no-reposimplestore
#testcases revlogv1 revlogv2
#if revlogv2
$ cat >> $HGRCPATH <<EOF
> [experimental]
> revlogv2=enable-unstable-format-and-corrupt-my-data
> EOF
#endif
$ cat >> $HGRCPATH <<EOF
> [extensions]
> censor=
> EOF
$ cp $HGRCPATH $HGRCPATH.orig
Create repo with unimpeachable content
$ hg init r
$ cd r
$ echo 'Initially untainted file' > target
$ echo 'Normal file here' > bystander
$ hg add target bystander
$ hg ci -m init
Clone repo so we can test pull later
$ cd ..
$ hg clone r rpull
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd r
Introduce content which will ultimately require censorship. Name the first
censored node C1, second C2, and so on
$ echo 'Tainted file' > target
$ echo 'Passwords: hunter2' >> target
$ hg ci -m taint target
$ C1=`hg id --debug -i`
$ echo 'hunter3' >> target
$ echo 'Normal file v2' > bystander
$ hg ci -m moretaint target bystander
$ C2=`hg id --debug -i`
Add a new sanitized versions to correct our mistake. Name the first head H1,
the second head H2, and so on
$ echo 'Tainted file is now sanitized' > target
$ hg ci -m sanitized target
$ H1=`hg id --debug -i`
$ hg update -r $C2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo 'Tainted file now super sanitized' > target
$ hg ci -m 'super sanitized' target
created new head
$ H2=`hg id --debug -i`
Verify target contents before censorship at each revision
$ hg cat -r $H1 target | head -n 10
Tainted file is now sanitized
$ hg cat -r $H2 target | head -n 10
Tainted file now super sanitized
$ hg cat -r $C2 target | head -n 10
Tainted file
Passwords: hunter2
hunter3
$ hg cat -r $C1 target | head -n 10
Tainted file
Passwords: hunter2
$ hg cat -r 0 target | head -n 10
Initially untainted file
Censor revision with 2 offenses
(this also tests file pattern matching: path relative to cwd case)
$ mkdir -p foo/bar/baz
$ hg --cwd foo/bar/baz censor -r $C2 -t "remove password" ../../../target
$ hg cat -r $H1 target | head -n 10
Tainted file is now sanitized
$ hg cat -r $H2 target | head -n 10
Tainted file now super sanitized
$ hg cat -r $C2 target | head -n 10
abort: censored node: 1e0247a9a4b7
(set censor.policy to ignore errors)
$ hg cat -r $C1 target | head -n 10
Tainted file
Passwords: hunter2
$ hg cat -r 0 target | head -n 10
Initially untainted file
Censor revision with 1 offense
(this also tests file pattern matching: with 'path:' scheme)
$ hg --cwd foo/bar/baz censor -r $C1 path:target
$ hg cat -r $H1 target | head -n 10
Tainted file is now sanitized
$ hg cat -r $H2 target | head -n 10
Tainted file now super sanitized
$ hg cat -r $C2 target | head -n 10
abort: censored node: 1e0247a9a4b7
(set censor.policy to ignore errors)
$ hg cat -r $C1 target | head -n 10
abort: censored node: 613bc869fceb
(set censor.policy to ignore errors)
$ hg cat -r 0 target | head -n 10
Initially untainted file
Can only checkout target at uncensored revisions, -X is workaround for --all
$ hg revert -r $C2 target | head -n 10
abort: censored node: 1e0247a9a4b7
(set censor.policy to ignore errors)
$ hg revert -r $C1 target | head -n 10
abort: censored node: 613bc869fceb
(set censor.policy to ignore errors)
$ hg revert -r $C1 --all
reverting bystander
reverting target
abort: censored node: 613bc869fceb
(set censor.policy to ignore errors)
[255]
$ hg revert -r $C1 --all -X target
$ cat target | head -n 10
Tainted file now super sanitized
$ hg revert -r 0 --all
reverting target
$ cat target | head -n 10
Initially untainted file
$ hg revert -r $H2 --all
reverting bystander
reverting target
$ cat target | head -n 10
Tainted file now super sanitized
Uncensored file can be viewed at any revision
$ hg cat -r $H1 bystander | head -n 10
Normal file v2
$ hg cat -r $C2 bystander | head -n 10
Normal file v2
$ hg cat -r $C1 bystander | head -n 10
Normal file here
$ hg cat -r 0 bystander | head -n 10
Normal file here
Can update to children of censored revision
$ hg update -r $H1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Tainted file is now sanitized
$ hg update -r $H2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Tainted file now super sanitized
Set censor policy to abort in trusted $HGRC so hg verify fails
$ cp $HGRCPATH.orig $HGRCPATH
$ cat >> $HGRCPATH <<EOF
> [censor]
> policy = abort
> EOF
Repo fails verification due to censorship
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
target@1: censored file data
target@2: censored file data
checked 5 changesets with 7 changes to 2 files
2 integrity errors encountered!
(first damaged changeset appears to be 1)
[1]
Cannot update to revision with censored data
$ hg update -r $C2
abort: censored node: 1e0247a9a4b7
(set censor.policy to ignore errors)
[255]
$ hg update -r $C1
abort: censored node: 613bc869fceb
(set censor.policy to ignore errors)
[255]
$ hg update -r 0
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg update -r $H2
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
Set censor policy to ignore in trusted $HGRC so hg verify passes
$ cp $HGRCPATH.orig $HGRCPATH
$ cat >> $HGRCPATH <<EOF
> [censor]
> policy = ignore
> EOF
Repo passes verification with warnings with explicit config
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checked 5 changesets with 7 changes to 2 files
May update to revision with censored data with explicit config
$ hg update -r $C2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
$ hg update -r $C1
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
$ hg update -r 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Initially untainted file
$ hg update -r $H2
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Tainted file now super sanitized
Can merge in revision with censored data. Test requires one branch of history
with the file censored, but we can't censor at a head, so advance H1.
$ hg update -r $H1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ C3=$H1
$ echo 'advanced head H1' > target
$ hg ci -m 'advance head H1' target
$ H1=`hg id --debug -i`
$ hg censor -r $C3 target
$ hg update -r $H2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge -r $C3
merging target
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
Revisions present in repository heads may not be censored
$ hg update -C -r $H2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg censor -r $H2 target
abort: cannot censor file in heads (78a8fc215e79)
(clean/delete and commit first)
[255]
$ echo 'twiddling thumbs' > bystander
$ hg ci -m 'bystander commit'
$ H2=`hg id --debug -i`
$ hg censor -r "$H2^" target
abort: cannot censor file in heads (efbe78065929)
(clean/delete and commit first)
[255]
Cannot censor working directory
$ echo 'seriously no passwords' > target
$ hg ci -m 'extend second head arbitrarily' target
$ H2=`hg id --debug -i`
$ hg update -r "$H2^"
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg censor -r . target
abort: cannot censor working directory
(clean/delete/update first)
[255]
$ hg update -r $H2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
Can re-add file after being deleted + censored
$ C4=$H2
$ hg rm target
$ hg ci -m 'delete target so it may be censored'
$ H2=`hg id --debug -i`
$ hg censor -r $C4 target
$ hg cat -r $C4 target | head -n 10
$ hg cat -r "$H2^^" target | head -n 10
Tainted file now super sanitized
$ echo 'fresh start' > target
$ hg add target
$ hg ci -m reincarnated target
$ H2=`hg id --debug -i`
$ hg cat -r $H2 target | head -n 10
fresh start
$ hg cat -r "$H2^" target | head -n 10
target: no such file in rev 452ec1762369
$ hg cat -r $C4 target | head -n 10
$ hg cat -r "$H2^^^" target | head -n 10
Tainted file now super sanitized
Can censor after revlog has expanded to no longer permit inline storage
$ for x in `"$PYTHON" $TESTDIR/seq.py 0 50000`
> do
> echo "Password: hunter$x" >> target
> done
$ hg ci -m 'add 100k passwords'
$ H2=`hg id --debug -i`
$ C5=$H2
$ hg revert -r "$H2^" target
$ hg ci -m 'cleaned 100k passwords'
$ H2=`hg id --debug -i`
$ hg censor -r $C5 target
$ hg cat -r $C5 target | head -n 10
$ hg cat -r $H2 target | head -n 10
fresh start
Repo with censored nodes can be cloned and cloned nodes are censored
$ cd ..
$ hg clone r rclone
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd rclone
$ hg cat -r $H1 target | head -n 10
advanced head H1
$ hg cat -r $H2~5 target | head -n 10
Tainted file now super sanitized
$ hg cat -r $C2 target | head -n 10
$ hg cat -r $C1 target | head -n 10
$ hg cat -r 0 target | head -n 10
Initially untainted file
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checked 12 changesets with 13 changes to 2 files
Repo cloned before tainted content introduced can pull censored nodes
$ cd ../rpull
$ hg cat -r tip target | head -n 10
Initially untainted file
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checked 1 changesets with 2 changes to 2 files
$ hg pull -r $H1 -r $H2
pulling from $TESTTMP/r
searching for changes
adding changesets
adding manifests
adding file changes
added 11 changesets with 11 changes to 2 files (+1 heads)
new changesets 186fb27560c3:683e4645fded
(run 'hg heads' to see heads, 'hg merge' to merge)
$ hg update 4
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Tainted file now super sanitized
$ hg cat -r $H1 target | head -n 10
advanced head H1
$ hg cat -r $H2~5 target | head -n 10
Tainted file now super sanitized
$ hg cat -r $C2 target | head -n 10
$ hg cat -r $C1 target | head -n 10
$ hg cat -r 0 target | head -n 10
Initially untainted file
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checked 12 changesets with 13 changes to 2 files
Censored nodes can be pushed if they censor previously unexchanged nodes
$ echo 'Passwords: hunter2hunter2' > target
$ hg ci -m 're-add password from clone' target
created new head
$ H3=`hg id --debug -i`
$ REV=$H3
$ echo 'Re-sanitized; nothing to see here' > target
$ hg ci -m 're-sanitized' target
$ H2=`hg id --debug -i`
$ CLEANREV=$H2
$ hg cat -r $REV target | head -n 10
Passwords: hunter2hunter2
$ hg censor -r $REV target
$ hg cat -r $REV target | head -n 10
$ hg cat -r $CLEANREV target | head -n 10
Re-sanitized; nothing to see here
$ hg push -f -r $H2
pushing to $TESTTMP/r
searching for changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 1 files (+1 heads)
$ cd ../r
$ hg cat -r $REV target | head -n 10
$ hg cat -r $CLEANREV target | head -n 10
Re-sanitized; nothing to see here
$ hg update $CLEANREV
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Re-sanitized; nothing to see here
Censored nodes can be bundled up and unbundled in another repo
$ hg bundle --base 0 ../pwbundle
13 changesets found
$ cd ../rclone
$ hg unbundle ../pwbundle
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files (+1 heads)
new changesets 075be80ac777:dcbaf17bf3a1 (2 drafts)
(run 'hg heads .' to see heads, 'hg merge' to merge)
$ hg cat -r $REV target | head -n 10
$ hg cat -r $CLEANREV target | head -n 10
Re-sanitized; nothing to see here
$ hg update $CLEANREV
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Re-sanitized; nothing to see here
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checked 14 changesets with 15 changes to 2 files
Grepping only warns, doesn't error out
$ cd ../rpull
$ hg grep 'Normal file'
bystander:Normal file v2
$ hg grep nothing
target:Re-sanitized; nothing to see here
$ hg grep --diff 'Normal file'
cannot search in censored file: target:7
cannot search in censored file: target:10
cannot search in censored file: target:12
bystander:6:-:Normal file v2
cannot search in censored file: target:1
cannot search in censored file: target:2
cannot search in censored file: target:3
bystander:2:-:Normal file here
bystander:2:+:Normal file v2
bystander:0:+:Normal file here
$ hg grep --diff nothing
cannot search in censored file: target:7
cannot search in censored file: target:10
cannot search in censored file: target:12
target:13:+:Re-sanitized; nothing to see here
cannot search in censored file: target:1
cannot search in censored file: target:2
cannot search in censored file: target:3
Censored nodes can be imported on top of censored nodes, consecutively
$ hg init ../rimport
$ hg bundle --base 1 ../rimport/splitbundle
12 changesets found
$ cd ../rimport
$ hg pull -r $H1 -r $H2 ../r
pulling from ../r
adding changesets
adding manifests
adding file changes
added 8 changesets with 10 changes to 2 files (+1 heads)
new changesets e97f55b2665a:dcbaf17bf3a1
(run 'hg heads' to see heads, 'hg merge' to merge)
$ hg unbundle splitbundle
adding changesets
adding manifests
adding file changes
added 6 changesets with 5 changes to 2 files (+1 heads)
new changesets efbe78065929:683e4645fded (6 drafts)
(run 'hg heads .' to see heads, 'hg merge' to merge)
$ hg update $H2
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat target | head -n 10
Re-sanitized; nothing to see here
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checked 14 changesets with 15 changes to 2 files
$ cd ../r
Can import bundle where first revision of a file is censored
$ hg init ../rinit
$ hg censor -r 0 target
$ hg bundle -r 0 --base null ../rinit/initbundle
1 changesets found
$ cd ../rinit
$ hg unbundle initbundle
adding changesets
adding manifests
adding file changes
added 1 changesets with 2 changes to 2 files
new changesets e97f55b2665a (1 drafts)
(run 'hg update' to get a working copy)
$ hg cat -r 0 target | head -n 10
#if revlogv2
Testing feature that does not work in revlog v1
===============================================
Censoring a revision that is used as delta base
-----------------------------------------------
$ cd ..
$ hg init censor-with-delta
$ cd censor-with-delta
$ echo root > target
$ hg add target
$ hg commit -m root
$ B0=`hg id --debug -i`
$ for x in `"$PYTHON" $TESTDIR/seq.py 0 50000`
> do
> echo "Password: hunter$x" >> target
> done
$ hg ci -m 'write a long file'
$ B1=`hg id --debug -i`
$ echo 'small change (should create a delta)' >> target
$ hg ci -m 'create a delta over the password'
(should show that the last revision is a delta, not a snapshot)
$ B2=`hg id --debug -i`
Make sure the last revision is a delta against the revision we will censor
$ hg debugdeltachain target -T '{rev} {chainid} {chainlen} {prevrev}\n'
0 1 1 -1
1 2 1 -1
2 2 2 1
Censor the file
$ hg cat -r $B1 target | wc -l
50002 (re)
$ hg censor -r $B1 target
$ hg cat -r $B1 target | wc -l
0 (re)
Check the children is fine
$ hg cat -r $B2 target | wc -l
50003 (re)
#endif