semanage_migrate_store: Python3 support
Mainly used the 2to3 conversion tool. Also added in a __future__ import so that the script continues to work on Python 2. Tested on 2.7, 3.3, 3.4. Should work on 2.6 too but untested. Signed-off-by: Jason Zaman <jason@perfinion.com> Acked-by: Steve Lawrence <slawrence@tresys.com>
This commit is contained in:
Jason Zaman
Steve Lawrence
parent
7a09af2123
commit
877acdb31f
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@ -1,6 +1,7 @@
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#!/usr/bin/python -E
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from __future__ import print_function
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import os
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import errno
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import shutil
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@ -16,7 +17,7 @@ try:
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import selinux
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import semanage
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except:
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print >> sys.stderr, "You must install libselinux-python and libsemanage-python before running this tool"
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print("You must install libselinux-python and libsemanage-python before running this tool", file=sys.stderr)
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exit(1)
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@ -25,69 +26,72 @@ except:
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# For some reason this function doesn't exist in libselinux :\
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def copy_with_context(src, dst):
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if DEBUG:
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print "copying %s to %s" % (src, dst)
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print("copying %s to %s" % (src, dst))
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try:
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con = selinux.lgetfilecon_raw(src)[1]
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except:
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print >> sys.stderr, "Could not get file context of %s" % src
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print("Could not get file context of %s" % src, file=sys.stderr)
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exit(1)
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try:
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selinux.setfscreatecon_raw(con)
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except:
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print >> sys.stderr, "Could not set fs create context: %s" %con
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print("Could not set fs create context: %s" %con, file=sys.stderr)
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exit(1)
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try:
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shutil.copy2(src, dst)
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except OSError as (err, strerr):
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print >> sys.stderr, "Could not copy %s to %s, %s" %(src, dst, strerr)
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except OSError as the_err:
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(err, strerr) = the_err.args
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print("Could not copy %s to %s, %s" %(src, dst, strerr), file=sys.stderr)
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exit(1)
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try:
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selinux.setfscreatecon_raw(None)
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except:
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print >> sys.stderr, "Could not reset fs create context. May need to relabel system."
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print("Could not reset fs create context. May need to relabel system.", file=sys.stderr)
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def create_dir_from(src, dst, mode):
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if DEBUG: print "Making directory %s" % dst
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if DEBUG: print("Making directory %s" % dst)
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try:
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con = selinux.lgetfilecon_raw(src)[1]
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selinux.setfscreatecon_raw(con)
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os.makedirs(dst, mode)
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except OSError as (err, stderr):
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except OSError as the_err:
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(err, stderr) = the_err.args
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if err == errno.EEXIST:
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pass
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else:
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print >> sys.stderr, "Error creating %s" % dst
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print("Error creating %s" % dst, file=sys.stderr)
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exit(1)
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try:
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selinux.setfscreatecon_raw(None)
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except:
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print >> sys.stderr, "Could not reset fs create context. May need to relabel system."
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print("Could not reset fs create context. May need to relabel system.", file=sys.stderr)
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def create_file_from(src, dst):
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if DEBUG: print "Making file %s" % dst
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if DEBUG: print("Making file %s" % dst)
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try:
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con = selinux.lgetfilecon_raw(src)[1]
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selinux.setfscreatecon_raw(con)
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open(dst, 'a').close()
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except OSError as (err, stderr):
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print >> sys.stderr, "Error creating %s" % dst
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except OSError as the_err:
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(err, stderr) = the_err.args
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print("Error creating %s" % dst, file=sys.stderr)
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exit(1)
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try:
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selinux.setfscreatecon_raw(None)
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except:
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print >> sys.stderr, "Could not reset fs create context. May need to relabel system."
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print("Could not reset fs create context. May need to relabel system.", file=sys.stderr)
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def copy_module(store, name, con, base):
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if DEBUG: print "Install module %s" % name
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if DEBUG: print("Install module %s" % name)
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(file, ext) = os.path.splitext(name)
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if ext != ".pp":
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# Stray non-pp file in modules directory, skip
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print >> sys.stderr, "warning: %s has invalid extension, skipping" % name
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print("warning: %s has invalid extension, skipping" % name, file=sys.stderr)
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return
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try:
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selinux.setfscreatecon_raw(con)
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@ -104,21 +108,21 @@ def copy_module(store, name, con, base):
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copy_with_context(os.path.join(root, name), "%s/%s/hll" % (bottomdir, file))
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# This is the ext file that will eventually be used to choose a compiler
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efile = open("%s/%s/lang_ext" % (bottomdir, file), "w+", 0600)
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efile = open("%s/%s/lang_ext" % (bottomdir, file), "w+", 0o600)
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efile.write("pp")
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efile.close()
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except:
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print >> sys.stderr, "Error installing module %s" % name
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print("Error installing module %s" % name, file=sys.stderr)
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exit(1)
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try:
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selinux.setfscreatecon_raw(None)
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except:
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print >> sys.stderr, "Could not reset fs create context. May need to relabel system."
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print("Could not reset fs create context. May need to relabel system.", file=sys.stderr)
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def disable_module(file, root, name, disabledmodules):
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if DEBUG: print "Disabling %s" % name
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if DEBUG: print("Disabling %s" % name)
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(disabledname, disabledext) = os.path.splitext(file)
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create_file_from(os.path.join(root, name), "%s/%s" % (disabledmodules, disabledname))
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@ -131,14 +135,14 @@ def migrate_store(store):
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newmodules = newmodules_path(store);
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bottomdir = bottomdir_path(store);
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print "Migrating from %s to %s" % (oldstore, newstore)
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print("Migrating from %s to %s" % (oldstore, newstore))
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# Build up new directory structure
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create_dir_from(selinux.selinux_policy_root(), "%s/%s" % (newroot_path(), store), 0755)
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create_dir_from(oldmodules, newstore, 0700)
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create_dir_from(oldstore, newmodules, 0700)
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create_dir_from(oldstore, bottomdir, 0700)
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create_dir_from(oldstore, disabledmodules, 0700)
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create_dir_from(selinux.selinux_policy_root(), "%s/%s" % (newroot_path(), store), 0o755)
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create_dir_from(oldmodules, newstore, 0o700)
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create_dir_from(oldstore, newmodules, 0o700)
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create_dir_from(oldstore, bottomdir, 0o700)
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create_dir_from(oldstore, disabledmodules, 0o700)
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# use whatever the file context of bottomdir is for the module directories
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con = selinux.lgetfilecon_raw(bottomdir)[1]
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@ -164,7 +168,7 @@ def migrate_store(store):
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for name in files:
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(file, ext) = os.path.splitext(name)
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if name == "base.pp":
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print >> sys.stderr, "Error installing module %s, name conflicts with base" % name
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print("Error installing module %s, name conflicts with base" % name, file=sys.stderr)
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exit(1)
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elif ext == ".disabled":
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disable_module(file, root, name, disabledmodules)
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@ -173,32 +177,32 @@ def migrate_store(store):
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def rebuild_policy():
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# Ok, the modules are loaded, lets try to rebuild the policy
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print "Attempting to rebuild policy from %s" % newroot_path()
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print("Attempting to rebuild policy from %s" % newroot_path())
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curstore = selinux.selinux_getpolicytype()[1]
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handle = semanage.semanage_handle_create()
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if not handle:
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print >> sys.stderr, "Could not create semanage handle"
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print("Could not create semanage handle", file=sys.stderr)
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exit(1)
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semanage.semanage_select_store(handle, curstore, semanage.SEMANAGE_CON_DIRECT)
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if not semanage.semanage_is_managed(handle):
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semanage.semanage_handle_destroy(handle)
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print >> sys.stderr, "SELinux policy is not managed or store cannot be accessed."
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print("SELinux policy is not managed or store cannot be accessed.", file=sys.stderr)
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exit(1)
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rc = semanage.semanage_access_check(handle)
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if rc < semanage.SEMANAGE_CAN_WRITE:
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semanage.semanage_handle_destroy(handle)
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print >> sys.stderr, "Cannot write to policy store."
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print("Cannot write to policy store.", file=sys.stderr)
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exit(1)
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rc = semanage.semanage_connect(handle)
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if rc < 0:
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semanage.semanage_handle_destroy(handle)
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print >> sys.stderr, "Could not establish semanage connection"
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print("Could not establish semanage connection", file=sys.stderr)
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exit(1)
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semanage.semanage_set_rebuild(handle, 1)
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@ -206,12 +210,12 @@ def rebuild_policy():
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rc = semanage.semanage_begin_transaction(handle)
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if rc < 0:
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semanage.semanage_handle_destroy(handle)
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print >> sys.stderr, "Could not begin transaction"
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print("Could not begin transaction", file=sys.stderr)
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exit(1)
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rc = semanage.semanage_commit(handle)
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if rc < 0:
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print >> sys.stderr, "Could not commit transaction"
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print("Could not commit transaction", file=sys.stderr)
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semanage.semanage_handle_destroy(handle)
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@ -283,7 +287,7 @@ if __name__ == "__main__":
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"preserve_tunables" ]
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create_dir_from(oldroot_path(), newroot_path(), 0755)
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create_dir_from(oldroot_path(), newroot_path(), 0o755)
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stores = None
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if TYPE is not None:
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@ -299,14 +303,14 @@ if __name__ == "__main__":
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if os.path.isdir(newstore_path(store)):
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# store has already been migrated, but old modules dir still exits
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print >> sys.stderr, "warning: Policy type %s has already been migrated, but modules still exist in the old store. Skipping store." % store
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print("warning: Policy type %s has already been migrated, but modules still exist in the old store. Skipping store." % store, file=sys.stderr)
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continue
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migrate_store(store)
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if CLEAN is True:
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def remove_error(function, path, execinfo):
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print >> sys.stderr, "warning: Unable to remove old store modules directory %s. Cleaning failed." % oldmodules_path(store)
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print("warning: Unable to remove old store modules directory %s. Cleaning failed." % oldmodules_path(store), file=sys.stderr)
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shutil.rmtree(oldmodules_path(store), onerror=remove_error)
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if NOREBUILD is False:
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