Current File : //lib/python3.6/site-packages/dnf/rpm/__init__.py
# __init__.py
#
# Copyright (C) 2012-2016 Red Hat, Inc.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# the GNU General Public License v.2, or (at your option) any later version.
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY expressed or implied, including the implied warranties of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details. You should have received a copy of the
# GNU General Public License along with this program; if not, write to the
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
# source code or documentation are not subject to the GNU General Public
# License and may only be used or replicated with the express permission of
# Red Hat, Inc.
#
from __future__ import absolute_import
from __future__ import unicode_literals
from . import transaction
from dnf.pycomp import is_py3bytes
import dnf.const
import dnf.exceptions
import rpm # used by ansible (dnf.rpm.rpm.labelCompare in lib/ansible/modules/packaging/os/dnf.py)
def detect_releasever(installroot):
# :api
"""Calculate the release version for the system."""
ts = transaction.initReadOnlyTransaction(root=installroot)
ts.pushVSFlags(~(rpm._RPMVSF_NOSIGNATURES | rpm._RPMVSF_NODIGESTS))
for distroverpkg in dnf.const.DISTROVERPKG:
if dnf.pycomp.PY3:
distroverpkg = bytes(distroverpkg, 'utf-8')
try:
idx = ts.dbMatch('provides', distroverpkg)
except (TypeError, rpm.error) as e:
raise dnf.exceptions.Error('Error: %s' % str(e))
if not len(idx):
continue
try:
hdr = next(idx)
except StopIteration:
msg = 'Error: rpmdb failed to list provides. Try: rpm --rebuilddb'
raise dnf.exceptions.Error(msg)
releasever = hdr['version']
try:
try:
# header returns bytes -> look for bytes
# it may fail because rpm returns a decoded string since 10 Apr 2019
off = hdr[rpm.RPMTAG_PROVIDENAME].index(distroverpkg)
except ValueError:
# header returns a string -> look for a string
off = hdr[rpm.RPMTAG_PROVIDENAME].index(distroverpkg.decode("utf8"))
flag = hdr[rpm.RPMTAG_PROVIDEFLAGS][off]
ver = hdr[rpm.RPMTAG_PROVIDEVERSION][off]
if flag == rpm.RPMSENSE_EQUAL and ver:
if hdr['name'] not in (distroverpkg, distroverpkg.decode("utf8")):
# override the package version
releasever = ver
except (ValueError, KeyError, IndexError):
pass
if is_py3bytes(releasever):
releasever = str(releasever, "utf-8")
return releasever
return None
def _header(path):
"""Return RPM header of the file."""
ts = transaction.initReadOnlyTransaction()
with open(path) as package:
fdno = package.fileno()
try:
hdr = ts.hdrFromFdno(fdno)
except rpm.error as e:
raise dnf.exceptions.Error("{0}: '{1}'".format(e, path))
return hdr
def _invert(dct):
return {v: k for k in dct for v in dct[k]}
_BASEARCH_MAP = _invert({
'aarch64': ('aarch64',),
'alpha': ('alpha', 'alphaev4', 'alphaev45', 'alphaev5', 'alphaev56',
'alphaev6', 'alphaev67', 'alphaev68', 'alphaev7', 'alphapca56'),
'arm': ('armv5tejl', 'armv5tel', 'armv5tl', 'armv6l', 'armv7l', 'armv8l'),
'armhfp': ('armv6hl', 'armv7hl', 'armv7hnl', 'armv8hl'),
'i386': ('i386', 'athlon', 'geode', 'i386', 'i486', 'i586', 'i686'),
'ia64': ('ia64',),
'mips': ('mips',),
'mipsel': ('mipsel',),
'mips64': ('mips64',),
'mips64el': ('mips64el',),
'noarch': ('noarch',),
'ppc': ('ppc',),
'ppc64': ('ppc64', 'ppc64iseries', 'ppc64p7', 'ppc64pseries'),
'ppc64le': ('ppc64le',),
'riscv32' : ('riscv32',),
'riscv64' : ('riscv64',),
'riscv128' : ('riscv128',),
's390': ('s390',),
's390x': ('s390x',),
'sh3': ('sh3',),
'sh4': ('sh4', 'sh4a'),
'sparc': ('sparc', 'sparc64', 'sparc64v', 'sparcv8', 'sparcv9',
'sparcv9v'),
'x86_64': ('x86_64', 'amd64', 'ia32e'),
})
def basearch(arch):
# :api
return _BASEARCH_MAP[arch]
def getheader(rpm_hdr, key):
'''
Returns value of rpm_hdr[key] as a string. Rpm has switched from bytes to str
and we need to handle both properly.
'''
value = rpm_hdr[key]
if is_py3bytes(value):
value = str(value, "utf-8")
return value
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