revlog: use a `reading` context in `_enforceinlinesize`
We are about to enforce reading context on various operation, so we make sure
top level method are in the right context.
In the future we might move the responsibility of opening the revlog for reading
higher in the call chain but lets limit the disruption for now.
$ hg init repo
$ cd repo
$ echo a > a
$ hg ci -Am0
adding a
$ hg -q clone . foo
$ touch .hg/store/journal
$ echo foo > a
$ hg ci -Am0
abort: abandoned transaction found
(run 'hg recover' to clean up transaction)
[255]
$ hg recover
rolling back interrupted transaction
(verify step skipped, run `hg verify` to check your repository content)
recover, explicit verify
$ touch .hg/store/journal
$ hg ci -Am0
abort: abandoned transaction found
(run 'hg recover' to clean up transaction)
[255]
$ hg recover --verify -q
recover, no verify
$ touch .hg/store/journal
$ hg ci -Am0
abort: abandoned transaction found
(run 'hg recover' to clean up transaction)
[255]
$ hg recover --no-verify
rolling back interrupted transaction
(verify step skipped, run `hg verify` to check your repository content)
Check that zero-size journals are correctly aborted:
#if unix-permissions no-root
$ hg bundle -qa repo.hg
$ chmod -w foo/.hg/store/00changelog.i
$ hg -R foo unbundle repo.hg
adding changesets
abort: $EACCES$: '$TESTTMP/repo/foo/.hg/store/.00changelog.i-*' (glob)
[255]
$ if test -f foo/.hg/store/journal; then echo 'journal exists :-('; fi
#endif