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Check if the old and new paths refer to the same file when relocating or cleaning up.

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This commit also fixes updates with delta packages when the destination
directory is "/" and fixes exceptions when an old file is not found.
This commit is contained in:
Fatih Aşıcı
2010-02-28 18:13:07 +00:00
parent f98a1d0d46
commit 31e35e9604
1 changed files with 61 additions and 12 deletions
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pisi/atomicoperations.py
+61 -12
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@@ -370,31 +370,80 @@ class Install(AtomicOperation):
# of these files may be relocated to some other directory in the new package.
# We handle these cases here.
def relocate_files():
missing_old_files = set()
for old_file, new_file in pisi.operations.delta.find_relocations(self.old_files, self.files):
old_path, new_path = ("/" + old_file.path, "/" + new_file.path)
old_path = os.path.join(ctx.config.dest_dir(), old_file.path)
new_path = os.path.join(ctx.config.dest_dir(), new_file.path)
if not os.path.lexists(old_path):
missing_old_files.add(old_path)
continue
if os.path.lexists(new_path):
# If one of the parent directories is a symlink, it is possible
# that the new and old file paths refer to the same file.
# In this case, there is nothing to do here.
#
# e.g. /lib/libdl.so and /lib64/libdl.so when /lib64 is
# a symlink to /lib.
if os.path.basename(old_path) == os.path.basename(new_path) \
and os.path.samestat(os.lstat(old_path), os.lstat(new_path)):
continue
os.unlink(new_path)
destdir = os.path.dirname(new_path)
if not os.path.exists(destdir):
os.makedirs(destdir)
if os.path.lexists(new_path):
os.unlink(new_path)
if os.path.islink(old_path):
os.symlink(os.readlink(old_path), new_path)
else:
shutil.copy(old_path, new_path)
if missing_old_files:
ctx.ui.warning(_("Unable to relocate following files. Reinstallation of this package is strongly recommended."))
for f in sorted(missing_old_files):
ctx.ui.warning("\t- %s" % f)
# remove left over files from the old package.
def clean_leftovers():
new = set(str(f.path) for f in self.files.list)
old = set(str(f.path) for f in self.old_files.list)
leftover = old - new
old_fileinfo = {}
for fileinfo in self.old_files.list:
old_fileinfo[str(fileinfo.path)] = fileinfo
for path in leftover:
Remove.remove_file(old_fileinfo[path], self.pkginfo.name)
new_files = dict((f.path, f) for f in self.files.list)
for old_file in self.old_files.list:
if old_file.path in new_files:
continue
old_file_path = os.path.join(ctx.config.dest_dir(), old_file.path)
if not os.path.lexists(old_file_path):
continue
old_file_stat = None
old_filename = os.path.basename(old_file.path)
for new_file in self.files.list:
# If one of the parent directories is a symlink, it is possible
# that the new and old file paths refer to the same file.
# In this case, we must not remove the old file.
#
# e.g. /lib/libdl.so and /lib64/libdl.so when /lib64 is
# a symlink to /lib.
if new_file.hash != old_file.hash \
or os.path.basename(new_file.path) != old_filename:
continue
new_file_path = os.path.join(ctx.config.dest_dir(), new_file.path)
if not os.path.lexists(new_file_path):
continue
old_file_stat = old_file_stat or os.lstat(old_file_path)
if os.path.samestat(os.lstat(new_file_path), old_file_stat):
break
else:
Remove.remove_file(old_file, self.pkginfo.name)
if self.reinstall():
# get 'config' typed file objects