mirror of
https://github.com/systemd/systemd.git
synced 2025-03-21 02:50:18 +03:00
remove udev-acl
Udev-acl will be part of a future ConsoleKit release. On systemd systems, advanced ConsoleKit and udev-acl functionality are natively provided by systemd.
This commit is contained in:
Kay Sievers
parent
f6ba1a468c
commit
b618e9957b
18
Makefile.am
18
Makefile.am
@ -28,7 +28,6 @@ AM_LDFLAGS = \
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DISTCHECK_CONFIGURE_FLAGS = \
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--enable-debug \
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--enable-rule_generator \
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--enable-udev_acl \
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--enable-floppy \
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--enable-edd \
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--with-selinux \
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@ -676,23 +675,6 @@ dist_udevrules_DATA += \
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src/extras/rule_generator/75-persistent-net-generator.rules
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endif
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if ENABLE_UDEV_ACL
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# ------------------------------------------------------------------------------
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# udev_acl - apply ACLs for users with local forground sessions
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# ------------------------------------------------------------------------------
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src_udev_acl_SOURCES = src/extras/udev-acl/udev-acl.c
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src_udev_acl_CPPFLAGS = $(AM_CPPFLAGS) $(GLIB_CFLAGS)
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src_udev_acl_LDADD = src/libudev-private.la -lacl $(GLIB_LIBS)
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dist_udevrules_DATA += src/extras/udev-acl/70-udev-acl.rules
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pkglibexec_PROGRAMS += src/udev-acl
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udevacl-install-hook:
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mkdir -p $(DESTDIR)$(prefix)/lib/ConsoleKit/run-seat.d
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ln -sf $(libexecdir)/udev/udev-acl $(DESTDIR)$(prefix)/lib/ConsoleKit/run-seat.d/udev-acl.ck
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INSTALL_EXEC_HOOKS += udevacl-install-hook
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endif
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if ENABLE_FLOPPY
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# ------------------------------------------------------------------------------
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# create_floppy_devices - historical floppy kernel device nodes (/dev/fd0h1440, ...)
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7
NEWS
7
NEWS
@ -1,3 +1,10 @@
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udev 181
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========
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The udev-acl tool is no longer provided, it will be part of a future
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ConsoleKit release. On systemd systems, advanced ConsoleKit and udev-acl
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functionality are provided by systemd.
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udev 181
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========
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Require kmod version 5.
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15
configure.ac
15
configure.ac
@ -176,20 +176,6 @@ AC_ARG_ENABLE([rule_generator],
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[], [enable_rule_generator=no])
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AM_CONDITIONAL([ENABLE_RULE_GENERATOR], [test "x$enable_rule_generator" = "xyes"])
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# ------------------------------------------------------------------------------
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# udev_acl - apply ACLs for users with local forground sessions
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# ------------------------------------------------------------------------------
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AC_ARG_ENABLE([udev_acl],
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AS_HELP_STRING([--enable-udev_acl], [enable local user acl permissions support @<:@default=disabled@:>@]),
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[], [enable_udev_acl=no])
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AS_IF([test "x$enable_udev_acl" = "xyes"], [
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AC_CHECK_LIB([acl], [acl_init], [:], AC_MSG_ERROR([libacl not found]))
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AC_CHECK_HEADER([acl/libacl.h], [:], AC_MSG_ERROR([libacl header not found]))
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PKG_CHECK_MODULES([GLIB], [glib-2.0 >= 2.22.0 gobject-2.0 >= 2.22.0])
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])
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AM_CONDITIONAL([ENABLE_UDEV_ACL], [test "x$enable_udev_acl" = "xyes"])
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# ------------------------------------------------------------------------------
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# create_floppy_devices - historical floppy kernel device nodes (/dev/fd0h1440, ...)
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# ------------------------------------------------------------------------------
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@ -260,7 +246,6 @@ AC_MSG_RESULT([
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keymap: ${enable_keymap}
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mtd_probe: ${enable_mtd_probe}
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rule_generator: ${enable_rule_generator}
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udev_acl: ${enable_udev_acl}
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floppy: ${enable_floppy}
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edd: ${enable_edd}
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])
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1
src/extras/udev-acl/.gitignore
vendored
1
src/extras/udev-acl/.gitignore
vendored
@ -1 +0,0 @@
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udev-acl
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@ -1,76 +0,0 @@
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# do not edit this file, it will be overwritten on update
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# Do not use TAG+="udev-acl" outside of this file. This variable is private to
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# udev-acl of this udev release and may be replaced at any time.
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ENV{MAJOR}=="", GOTO="acl_end"
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ACTION=="remove", GOTO="acl_apply"
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# systemd replaces udev-acl entirely, skip if active
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TEST=="/sys/fs/cgroup/systemd", TAG=="uaccess", GOTO="acl_end"
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# PTP/MTP protocol devices, cameras, portable media players
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SUBSYSTEM=="usb", ENV{ID_USB_INTERFACES}=="*:060101:*", TAG+="udev-acl"
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# digicams with proprietary protocol
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ENV{ID_GPHOTO2}=="*?", TAG+="udev-acl"
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# SCSI and USB scanners
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ENV{libsane_matched}=="yes", TAG+="udev-acl"
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# HPLIP devices (necessary for ink level check and HP tool maintenance)
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ENV{ID_HPLIP}=="1", TAG+="udev-acl"
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# optical drives
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SUBSYSTEM=="block", ENV{ID_CDROM}=="1", TAG+="udev-acl"
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SUBSYSTEM=="scsi_generic", SUBSYSTEMS=="scsi", ATTRS{type}=="4|5", TAG+="udev-acl"
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# sound devices
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SUBSYSTEM=="sound", TAG+="udev-acl"
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# ffado is an userspace driver for firewire sound cards
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SUBSYSTEM=="firewire", ENV{ID_FFADO}=="1", TAG+="udev-acl"
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# webcams, frame grabber, TV cards
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SUBSYSTEM=="video4linux", TAG+="udev-acl"
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SUBSYSTEM=="dvb", TAG+="udev-acl"
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# IIDC devices: industrial cameras and some webcams
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SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x00010*", TAG+="udev-acl"
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SUBSYSTEM=="firewire", ATTR{units}=="*0x00b09d:0x00010*", TAG+="udev-acl"
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# AV/C devices: camcorders, set-top boxes, TV sets, audio devices, and more
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SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x010001*", TAG+="udev-acl"
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SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x014001*", TAG+="udev-acl"
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# DRI video devices
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SUBSYSTEM=="drm", KERNEL=="card*", TAG+="udev-acl"
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# KVM
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SUBSYSTEM=="misc", KERNEL=="kvm", TAG+="udev-acl"
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# smart-card readers
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ENV{ID_SMARTCARD_READER}=="*?", TAG+="udev-acl"
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# PDA devices
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ENV{ID_PDA}=="*?", TAG+="udev-acl"
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# Programmable remote control
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ENV{ID_REMOTE_CONTROL}=="1", TAG+="udev-acl"
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# joysticks
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SUBSYSTEM=="input", ENV{ID_INPUT_JOYSTICK}=="?*", TAG+="udev-acl"
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# color measurement devices
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ENV{COLOR_MEASUREMENT_DEVICE}=="*?", TAG+="udev-acl"
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# DDC/CI device, usually high-end monitors such as the DreamColor
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ENV{DDC_DEVICE}=="*?", TAG+="udev-acl"
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# media player raw devices (for user-mode drivers, Android SDK, etc.)
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SUBSYSTEM=="usb", ENV{ID_MEDIA_PLAYER}=="?*", TAG+="udev-acl"
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# apply ACL for all locally logged in users
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LABEL="acl_apply", TAG=="udev-acl", TEST=="/var/run/ConsoleKit/database", \
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RUN+="udev-acl --action=$env{ACTION} --device=$env{DEVNAME}"
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LABEL="acl_end"
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@ -1,430 +0,0 @@
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/*
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* Copyright (C) 2009 Kay Sievers <kay.sievers@vrfy.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details:
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*/
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#include <acl/libacl.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <getopt.h>
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#include <glib.h>
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#include <inttypes.h>
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#include <libudev.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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static int debug;
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enum{
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ACTION_NONE = 0,
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ACTION_REMOVE,
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ACTION_ADD,
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ACTION_CHANGE
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};
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static int set_facl(const char* filename, uid_t uid, int add)
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{
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int get;
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acl_t acl;
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acl_entry_t entry = NULL;
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acl_entry_t e;
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acl_permset_t permset;
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int ret;
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/* don't touch ACLs for root */
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if (uid == 0)
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return 0;
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/* read current record */
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acl = acl_get_file(filename, ACL_TYPE_ACCESS);
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if (!acl)
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return -1;
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/* locate ACL_USER entry for uid */
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get = acl_get_entry(acl, ACL_FIRST_ENTRY, &e);
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while (get == 1) {
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acl_tag_t t;
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acl_get_tag_type(e, &t);
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if (t == ACL_USER) {
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uid_t *u;
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u = (uid_t*)acl_get_qualifier(e);
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if (u == NULL) {
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ret = -1;
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goto out;
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}
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if (*u == uid) {
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entry = e;
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acl_free(u);
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break;
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}
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acl_free(u);
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}
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get = acl_get_entry(acl, ACL_NEXT_ENTRY, &e);
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}
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/* remove ACL_USER entry for uid */
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if (!add) {
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if (entry == NULL) {
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ret = 0;
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goto out;
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}
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acl_delete_entry(acl, entry);
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goto update;
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}
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/* create ACL_USER entry for uid */
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if (entry == NULL) {
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ret = acl_create_entry(&acl, &entry);
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if (ret != 0)
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goto out;
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acl_set_tag_type(entry, ACL_USER);
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acl_set_qualifier(entry, &uid);
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}
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/* add permissions for uid */
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acl_get_permset(entry, &permset);
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acl_add_perm(permset, ACL_READ|ACL_WRITE);
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update:
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/* update record */
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if (debug)
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printf("%c%u %s\n", add ? '+' : '-', uid, filename);
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acl_calc_mask(&acl);
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ret = acl_set_file(filename, ACL_TYPE_ACCESS, acl);
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if (ret != 0)
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goto out;
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out:
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acl_free(acl);
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return ret;
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}
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/* check if a given uid is listed */
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static int uid_in_list(GSList *list, uid_t uid)
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{
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GSList *l;
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for (l = list; l != NULL; l = g_slist_next(l))
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if (uid == GPOINTER_TO_UINT(l->data))
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return 1;
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return 0;
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}
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/* return list of current uids of local active sessions */
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static GSList *uids_with_local_active_session(const char *own_id)
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{
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GSList *list = NULL;
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GKeyFile *keyfile;
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keyfile = g_key_file_new();
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if (g_key_file_load_from_file(keyfile, "/var/run/ConsoleKit/database", 0, NULL)) {
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gchar **groups;
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groups = g_key_file_get_groups(keyfile, NULL);
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if (groups != NULL) {
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int i;
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for (i = 0; groups[i] != NULL; i++) {
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uid_t u;
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if (!g_str_has_prefix(groups[i], "Session "))
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continue;
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if (own_id != NULL &&g_str_has_suffix(groups[i], own_id))
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continue;
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if (!g_key_file_get_boolean(keyfile, groups[i], "is_local", NULL))
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continue;
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if (!g_key_file_get_boolean(keyfile, groups[i], "is_active", NULL))
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continue;
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u = g_key_file_get_integer(keyfile, groups[i], "uid", NULL);
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if (u > 0 && !uid_in_list(list, u))
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list = g_slist_prepend(list, GUINT_TO_POINTER(u));
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}
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g_strfreev(groups);
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}
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}
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g_key_file_free(keyfile);
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return list;
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}
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/* ConsoleKit calls us with special variables */
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static int consolekit_called(const char *ck_action, uid_t *uid, uid_t *uid2, const char **remove_session_id, int *action)
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{
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int a = ACTION_NONE;
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uid_t u = 0;
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uid_t u2 = 0;
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const char *s;
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const char *s2;
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const char *old_session = NULL;
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if (ck_action == NULL || strcmp(ck_action, "seat_active_session_changed") != 0)
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return -1;
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/* We can have one of: remove, add, change, no-change */
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s = getenv("CK_SEAT_OLD_SESSION_ID");
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s2 = getenv("CK_SEAT_SESSION_ID");
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if (s == NULL && s2 == NULL) {
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return -1;
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} else if (s2 == NULL) {
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a = ACTION_REMOVE;
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} else if (s == NULL) {
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a = ACTION_ADD;
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} else {
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a = ACTION_CHANGE;
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}
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switch (a) {
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case ACTION_ADD:
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s = getenv("CK_SEAT_SESSION_USER_UID");
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if (s == NULL)
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return -1;
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u = strtoul(s, NULL, 10);
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s = getenv("CK_SEAT_SESSION_IS_LOCAL");
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if (s == NULL)
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return -1;
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if (strcmp(s, "true") != 0)
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return 0;
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break;
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case ACTION_REMOVE:
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s = getenv("CK_SEAT_OLD_SESSION_USER_UID");
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if (s == NULL)
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return -1;
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u = strtoul(s, NULL, 10);
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s = getenv("CK_SEAT_OLD_SESSION_IS_LOCAL");
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if (s == NULL)
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return -1;
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if (strcmp(s, "true") != 0)
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return 0;
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old_session = getenv("CK_SEAT_OLD_SESSION_ID");
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if (old_session == NULL)
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return -1;
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break;
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case ACTION_CHANGE:
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s = getenv("CK_SEAT_OLD_SESSION_USER_UID");
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if (s == NULL)
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return -1;
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u = strtoul(s, NULL, 10);
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s = getenv("CK_SEAT_SESSION_USER_UID");
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if (s == NULL)
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return -1;
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u2 = strtoul(s, NULL, 10);
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s = getenv("CK_SEAT_OLD_SESSION_IS_LOCAL");
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s2 = getenv("CK_SEAT_SESSION_IS_LOCAL");
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if (s == NULL || s2 == NULL)
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return -1;
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/* don't process non-local session changes */
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if (strcmp(s, "true") != 0 && strcmp(s2, "true") != 0)
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return 0;
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if (strcmp(s, "true") == 0 && strcmp(s, "true") == 0) {
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/* process the change */
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if (u == u2) {
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/* special case: we noop if we are
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* changing between local sessions for
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* the same uid */
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a = ACTION_NONE;
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}
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old_session = getenv("CK_SEAT_OLD_SESSION_ID");
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if (old_session == NULL)
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return -1;
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} else if (strcmp(s, "true") == 0) {
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/* only process the removal */
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a = ACTION_REMOVE;
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old_session = getenv("CK_SEAT_OLD_SESSION_ID");
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if (old_session == NULL)
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return -1;
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} else if (strcmp(s2, "true") == 0) {
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/* only process the addition */
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a = ACTION_ADD;
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u = u2;
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}
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break;
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}
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*remove_session_id = old_session;
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*uid = u;
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*uid2 = u2;
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*action = a;
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return 0;
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}
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/* add or remove a ACL for a given uid from all matching devices */
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static void apply_acl_to_devices(uid_t uid, int add)
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{
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struct udev *udev;
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struct udev_enumerate *enumerate;
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struct udev_list_entry *list_entry;
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/* iterate over all devices tagged with ACL_SET */
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udev = udev_new();
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enumerate = udev_enumerate_new(udev);
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udev_enumerate_add_match_tag(enumerate, "udev-acl");
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udev_enumerate_scan_devices(enumerate);
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udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(enumerate)) {
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struct udev_device *device;
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const char *node;
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device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerate),
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udev_list_entry_get_name(list_entry));
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if (device == NULL)
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continue;
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node = udev_device_get_devnode(device);
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if (node == NULL) {
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udev_device_unref(device);
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||||
continue;
|
||||
}
|
||||
set_facl(node, uid, add);
|
||||
udev_device_unref(device);
|
||||
}
|
||||
udev_enumerate_unref(enumerate);
|
||||
udev_unref(udev);
|
||||
}
|
||||
|
||||
static void
|
||||
remove_uid (uid_t uid, const char *remove_session_id)
|
||||
{
|
||||
/*
|
||||
* Remove ACL for given uid from all matching devices
|
||||
* when there is currently no local active session.
|
||||
*/
|
||||
GSList *list;
|
||||
|
||||
list = uids_with_local_active_session(remove_session_id);
|
||||
if (!uid_in_list(list, uid))
|
||||
apply_acl_to_devices(uid, 0);
|
||||
g_slist_free(list);
|
||||
}
|
||||
|
||||
int main (int argc, char* argv[])
|
||||
{
|
||||
static const struct option options[] = {
|
||||
{ "action", required_argument, NULL, 'a' },
|
||||
{ "device", required_argument, NULL, 'D' },
|
||||
{ "user", required_argument, NULL, 'u' },
|
||||
{ "debug", no_argument, NULL, 'd' },
|
||||
{ "help", no_argument, NULL, 'h' },
|
||||
{}
|
||||
};
|
||||
int action = -1;
|
||||
const char *device = NULL;
|
||||
bool uid_given = false;
|
||||
uid_t uid = 0;
|
||||
uid_t uid2 = 0;
|
||||
const char* remove_session_id = NULL;
|
||||
int rc = 0;
|
||||
|
||||
/* valgrind is more important to us than a slice allocator */
|
||||
g_slice_set_config (G_SLICE_CONFIG_ALWAYS_MALLOC, 1);
|
||||
|
||||
while (1) {
|
||||
int option;
|
||||
|
||||
option = getopt_long(argc, argv, "+a:D:u:dh", options, NULL);
|
||||
if (option == -1)
|
||||
break;
|
||||
|
||||
switch (option) {
|
||||
case 'a':
|
||||
if (strcmp(optarg, "remove") == 0)
|
||||
action = ACTION_REMOVE;
|
||||
else
|
||||
action = ACTION_ADD;
|
||||
break;
|
||||
case 'D':
|
||||
device = optarg;
|
||||
break;
|
||||
case 'u':
|
||||
uid_given = true;
|
||||
uid = strtoul(optarg, NULL, 10);
|
||||
break;
|
||||
case 'd':
|
||||
debug = 1;
|
||||
break;
|
||||
case 'h':
|
||||
printf("Usage: udev-acl --action=ACTION [--device=DEVICEFILE] [--user=UID]\n\n");
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
if (action < 0 && device == NULL && !uid_given)
|
||||
if (!consolekit_called(argv[optind], &uid, &uid2, &remove_session_id, &action))
|
||||
uid_given = true;
|
||||
|
||||
if (action < 0) {
|
||||
fprintf(stderr, "missing action\n\n");
|
||||
rc = 2;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (device != NULL && uid_given) {
|
||||
fprintf(stderr, "only one option, --device=DEVICEFILE or --user=UID expected\n\n");
|
||||
rc = 3;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (uid_given) {
|
||||
switch (action) {
|
||||
case ACTION_ADD:
|
||||
/* Add ACL for given uid to all matching devices. */
|
||||
apply_acl_to_devices(uid, 1);
|
||||
break;
|
||||
case ACTION_REMOVE:
|
||||
remove_uid(uid, remove_session_id);
|
||||
break;
|
||||
case ACTION_CHANGE:
|
||||
remove_uid(uid, remove_session_id);
|
||||
apply_acl_to_devices(uid2, 1);
|
||||
break;
|
||||
case ACTION_NONE:
|
||||
goto out;
|
||||
break;
|
||||
default:
|
||||
g_assert_not_reached();
|
||||
break;
|
||||
}
|
||||
} else if (device != NULL) {
|
||||
/*
|
||||
* Add ACLs for all current session uids to a given device.
|
||||
*
|
||||
* Or remove ACLs for uids which do not have any current local
|
||||
* active session. Remove is not really interesting, because in
|
||||
* most cases the device node is removed anyway.
|
||||
*/
|
||||
GSList *list;
|
||||
GSList *l;
|
||||
|
||||
list = uids_with_local_active_session(NULL);
|
||||
for (l = list; l != NULL; l = g_slist_next(l)) {
|
||||
uid_t u;
|
||||
|
||||
u = GPOINTER_TO_UINT(l->data);
|
||||
if (action == ACTION_ADD || !uid_in_list(list, u))
|
||||
set_facl(device, u, action == ACTION_ADD);
|
||||
}
|
||||
g_slist_free(list);
|
||||
} else {
|
||||
fprintf(stderr, "--device=DEVICEFILE or --user=UID expected\n\n");
|
||||
rc = 3;
|
||||
}
|
||||
out:
|
||||
return rc;
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user