view hgweb.cgi @ 29203:731ced087a4b

vfs: make rename avoid ambiguity of file stat if needed

In some cases below, renaming from backup is used to restore original
contents of a file. If renaming keeps ctime, mtime and size of a file,
restoring is overlooked, and old contents cached before restoring
isn't invalidated as expected.

  - failure of transaction before closing (only from '.hg/journal.dirstate')
  - rollback of previous transaction (from '.hg/undo.*')
  - failure in dirstateguard scope (from '.hg/dirstate.SUFFIX')

To avoid such problem, this patch makes vfs.rename() avoid ambiguity
of file stat, if needed.

Ambiguity check is executed, only if:

  - checkambig=True is specified (not all renaming needs ambiguity check), and
  - destination file exists before renaming

This patch is a part of preparation for "Exact Cache Validation Plan":

    https://www.mercurial-scm.org/wiki/ExactCacheValidationPlan

#!/usr/bin/env python
#
# An example hgweb CGI script, edit as necessary
# See also https://mercurial-scm.org/wiki/PublishingRepositories

# Path to repo or hgweb config to serve (see 'hg help hgweb')
config = "/path/to/repo/or/config"

# Uncomment and adjust if Mercurial is not installed system-wide
# (consult "installed modules" path from 'hg debuginstall'):
#import sys; sys.path.insert(0, "/path/to/python/lib")

# Uncomment to send python tracebacks to the browser if an error occurs:
#import cgitb; cgitb.enable()

from mercurial import demandimport; demandimport.enable()
from mercurial.hgweb import hgweb, wsgicgi
application = hgweb(config)
wsgicgi.launch(application)