def get_one_sig_fp(cls, dest_rp):
"""Return a signature fp of given index, corresponding to reg file"""
if not dest_rp.isreg():
log.ErrorLog.write_if_open("UpdateError", dest_rp,
"File changed from regular file before signature")
return None
if (Globals.process_uid != 0 and not dest_rp.readable() and
dest_rp.isowner()):
# This branch can happen with root source and non-root
# destination. Permissions are changed permanently, which
# should propogate to the diffs
dest_rp.chmod(0400 | dest_rp.getperms())
try:
return Rdiff.get_signature(dest_rp)
except IOError, e:
if (e.errno == errno.EPERM or e.errno == errno.EACCES):
try:
# Try chmod'ing anyway -- This can work on NFS and AFS
# depending on the setup. We keep the if() statement
# above for performance reasons.
dest_rp.chmod(0400 | dest_rp.getperms())
return Rdiff.get_signature(dest_rp)
except (IOError, OSError):
log.Log.FatalError("Could not open %s for reading. Check "
"permissions on file." % (dest_rp.path,))
else:
raise
def makediff(new, mirror, incpref): """Make incfile which is a diff new -> mirror""" compress = iscompressed(mirror) if compress: diff = get_inc(incpref, "diff.gz") else: diff = get_inc(incpref, "diff") old_new_perms, old_mirror_perms = (None, None) if Globals.process_uid != 0: # Check for unreadable files if not new.readable(): old_new_perms = new.getperms() new.chmod(0400 | old_new_perms) if not mirror.readable(): old_mirror_perms = mirror.getperms() mirror.chmod(0400 | old_mirror_perms) Rdiff.write_delta(new, mirror, diff, compress) if old_new_perms: new.chmod(old_new_perms) if old_mirror_perms: mirror.chmod(old_mirror_perms) rpath.copy_attribs_inc(mirror, diff) return diff
