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split selinux label operations out of cgroup-util, socket-util

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This prevents linking of selinux and libdl for another 15 binaries.
This commit is contained in:
Kay Sievers 2012-04-11 12:30:53 +02:00
parent 6ac405b493
commit cc527a4734
5 changed files with 293 additions and 195 deletions
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115
Makefile.am
View File

@ -575,29 +575,30 @@ libsystemd_shared_la_SOURCES = \
src/shared/pager.c \
src/shared/pager.h \
src/shared/ioprio.h \
src/shared/socket-util.c \
src/shared/socket-util.h \
src/shared/cgroup-util.c \
src/shared/cgroup-util.h \
src/shared/list.h \
src/shared/macro.h
# ------------------------------------------------------------------------------
noinst_LTLIBRARIES += \
libsystemd-shared-selinux.la
libsystemd-label.la
libsystemd_shared_selinux_la_SOURCES = \
src/shared/cgroup-util.c \
src/shared/cgroup-util.h \
src/shared/socket-util.c \
src/shared/socket-util.h \
libsystemd_label_la_SOURCES = \
src/shared/cgroup-label.c \
src/shared/socket-label.c \
src/shared/label.c \
src/shared/label.h \
src/shared/mkdir.c \
src/shared/mkdir.h
libsystemd_shared_selinux_la_CFLAGS = \
libsystemd_label_la_CFLAGS = \
$(AM_CFLAGS) \
$(SELINUX_CFLAGS)
libsystemd_shared_selinux_la_LIBADD = \
libsystemd-shared.la \
libsystemd_label_la_LIBADD = \
$(SELINUX_LIBS)
# ------------------------------------------------------------------------------
@ -785,8 +786,9 @@ libsystemd_core_la_CFLAGS = \
$(KMOD_CFLAGS)
libsystemd_core_la_LIBADD = \
libsystemd-shared-selinux.la \
libsystemd-capability.la \
libsystemd-label.la \
libsystemd-shared.la \
libudev.la \
$(DBUS_LIBS) \
$(LIBWRAP_LIBS) \
@ -841,7 +843,7 @@ test_loopback_SOURCES = \
src/loopback-setup.c
test_loopback_LDADD = \
libsystemd-shared-selinux.la
libsystemd-shared.la
test_hostname_SOURCES = \
src/test-hostname.c \
@ -861,7 +863,8 @@ test_cgroup_SOURCES = \
src/test-cgroup.c
test_cgroup_LDADD = \
libsystemd-shared-selinux.la
libsystemd-label.la \
libsystemd-shared.la
test_env_replace_SOURCES = \
src/test-env-replace.c
@ -887,7 +890,8 @@ test_install_CFLAGS = \
$(DBUS_CFLAGS)
test_install_LDADD = \
libsystemd-shared-selinux.la
libsystemd-label.la \
libsystemd-shared.la
test_watchdog_SOURCES = \
src/test-watchdog.c \
@ -933,7 +937,8 @@ systemd_shutdownd_SOURCES = \
src/shutdownd.c
systemd_shutdownd_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-label.la \
libsystemd-shared.la \
libsystemd-daemon.la
pkginclude_HEADERS += \
@ -948,7 +953,8 @@ systemd_shutdown_SOURCES = \
src/watchdog.h
systemd_shutdown_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-label.la \
libsystemd-shared.la \
libudev.la
# ------------------------------------------------------------------------------
@ -968,7 +974,8 @@ systemd_tmpfiles_SOURCES = \
src/tmpfiles.c
systemd_tmpfiles_LDADD = \
libsystemd-shared-selinux.la
libsystemd-label.la \
libsystemd-shared.la
# ------------------------------------------------------------------------------
systemd_machine_id_setup_SOURCES = \
@ -976,7 +983,8 @@ systemd_machine_id_setup_SOURCES = \
src/machine-id-main.c
systemd_machine_id_setup_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-label.la \
libsystemd-shared.la \
libsystemd-id128.la
# ------------------------------------------------------------------------------
@ -1028,14 +1036,16 @@ systemd_getty_generator_SOURCES = \
src/unit-name.c
systemd_getty_generator_LDADD = \
libsystemd-shared-selinux.la
libsystemd-label.la \
libsystemd-shared.la
# ------------------------------------------------------------------------------
systemd_rc_local_generator_SOURCES = \
src/rc-local-generator.c
systemd_rc_local_generator_LDADD = \
libsystemd-shared-selinux.la
libsystemd-label.la \
libsystemd-shared.la
# ------------------------------------------------------------------------------
systemd_remount_api_vfs_SOURCES = \
@ -1075,7 +1085,8 @@ systemctl_CFLAGS = \
$(DBUS_CFLAGS)
systemctl_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-label.la \
libsystemd-shared.la \
libsystemd-daemon.la \
libsystemd-journal.la \
libsystemd-id128.la \
@ -1096,7 +1107,8 @@ systemd_ask_password_SOURCES = \
src/ask-password-api.c
systemd_ask_password_LDADD = \
libsystemd-shared-selinux.la
libsystemd-label.la \
libsystemd-shared.la
# ------------------------------------------------------------------------------
systemd_reply_password_SOURCES = \
@ -1111,14 +1123,14 @@ systemd_cgls_SOURCES = \
src/cgroup-show.c
systemd_cgls_LDADD = \
libsystemd-shared-selinux.la
libsystemd-shared.la
# ------------------------------------------------------------------------------
systemd_cgtop_SOURCES = \
src/cgtop.c
systemd_cgtop_LDADD = \
libsystemd-shared-selinux.la
libsystemd-shared.la
# ------------------------------------------------------------------------------
systemd_nspawn_SOURCES = \
@ -1126,7 +1138,8 @@ systemd_nspawn_SOURCES = \
src/loopback-setup.c
systemd_nspawn_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-label.la \
libsystemd-shared.la \
libsystemd-capability.la \
libsystemd-daemon.la
@ -1144,7 +1157,8 @@ systemd_tty_ask_password_agent_SOURCES = \
src/utmp-wtmp.c
systemd_tty_ask_password_agent_LDADD = \
libsystemd-shared-selinux.la
libsystemd-label.la \
libsystemd-shared.la
# ------------------------------------------------------------------------------
libsystemd_daemon_la_SOURCES = \
@ -1385,7 +1399,7 @@ libudev_core_la_CFLAGS = \
libudev_core_la_LIBADD = \
libudev-private.la \
libsystemd-daemon.la \
libsystemd-shared-selinux.la \
libsystemd-shared.la \
$(BLKID_LIBS) \
$(KMOD_LIBS)
@ -1422,7 +1436,7 @@ udevadm_SOURCES = \
udevadm_LDADD = \
libudev-core.la \
libsystemd-shared-selinux.la
libsystemd-shared.la
# ------------------------------------------------------------------------------
TESTS = \
@ -1864,7 +1878,7 @@ test_id128_SOURCES = \
src/test-id128.c
test_id128_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-shared.la \
libsystemd-id128.la
noinst_PROGRAMS += \
@ -1924,7 +1938,8 @@ nodist_systemd_journald_SOURCES = \
systemd_journald_CFLAGS =
systemd_journald_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-label.la \
libsystemd-shared.la \
libsystemd-audit.la \
libsystemd-daemon.la \
libsystemd-login.la \
@ -1951,7 +1966,7 @@ systemd_cat_SOURCES = \
src/journal/cat.c
systemd_cat_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-shared.la \
libsystemd-journal.la
journalctl_SOURCES = \
@ -1959,7 +1974,7 @@ journalctl_SOURCES = \
src/logs-show.c
journalctl_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-shared.la \
libsystemd-journal.la \
libsystemd-id128.la
@ -1981,7 +1996,8 @@ test_journal_SOURCES = \
src/journal/journal-send.c
test_journal_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-label.la \
libsystemd-shared.la \
libsystemd-id128.la
if HAVE_XZ
@ -2000,7 +2016,7 @@ test_journal_send_SOURCES = \
src/journal/test-journal-send.c
test_journal_send_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-shared.la \
libsystemd-journal.la
libsystemd_journal_la_SOURCES = \
@ -2020,7 +2036,7 @@ libsystemd_journal_la_LDFLAGS = \
-Wl,--version-script=$(top_srcdir)/src/journal/libsystemd-journal.sym
libsystemd_journal_la_LIBADD = \
libsystemd-shared-selinux.la \
libsystemd-shared.la \
libsystemd-id128.la
if HAVE_XZ
@ -2117,7 +2133,8 @@ systemd_coredump_SOURCES = \
systemd_coredump_LDADD = \
libsystemd-journal.la \
libsystemd-login.la \
libsystemd-shared-selinux.la
libsystemd-label.la \
libsystemd-shared.la
rootlibexec_PROGRAMS += \
systemd-coredump
@ -2283,7 +2300,8 @@ systemd_random_seed_SOURCES = \
src/random-seed.c
systemd_random_seed_LDADD = \
libsystemd-shared-selinux.la
libsystemd-label.la \
libsystemd-shared.la
randomseed-install-data-hook:
$(MKDIR_P) -m 0755 \
@ -2320,7 +2338,8 @@ systemd_cryptsetup_CFLAGS = \
$(LIBCRYPTSETUP_CFLAGS)
systemd_cryptsetup_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-label.la \
libsystemd-shared.la \
libudev.la \
$(LIBCRYPTSETUP_LIBS)
@ -2329,7 +2348,8 @@ systemd_cryptsetup_generator_SOURCES = \
src/unit-name.c
systemd_cryptsetup_generator_LDADD = \
libsystemd-shared-selinux.la
libsystemd-label.la \
libsystemd-shared.la
cryptsetup-install-data-hook:
$(MKDIR_P) -m 0755 \
@ -2405,7 +2425,8 @@ systemd_localed_CFLAGS = \
$(DBUS_CFLAGS)
systemd_localed_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-label.la \
libsystemd-shared.la \
libsystemd-daemon.la \
$(DBUS_LIBS)
@ -2535,7 +2556,8 @@ systemd_logind_CFLAGS = \
$(DBUS_CFLAGS)
systemd_logind_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-label.la \
libsystemd-shared.la \
libsystemd-audit.la \
libsystemd-daemon.la \
libudev.la \
@ -2553,7 +2575,7 @@ systemd_user_sessions_SOURCES = \
src/login/user-sessions.c
systemd_user_sessions_LDADD = \
libsystemd-shared-selinux.la
libsystemd-shared.la
rootlibexec_PROGRAMS += \
systemd-logind \
@ -2570,7 +2592,7 @@ loginctl_CFLAGS = \
$(DBUS_CFLAGS)
loginctl_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-shared.la \
libudev.la \
$(DBUS_LIBS)
@ -2582,7 +2604,7 @@ test_login_SOURCES = \
test_login_LDADD = \
libsystemd-login.la \
libsystemd-shared-selinux.la
libsystemd-shared.la
noinst_PROGRAMS += \
test-login
@ -2601,7 +2623,7 @@ libsystemd_login_la_LDFLAGS = \
-Wl,--version-script=$(top_srcdir)/src/login/libsystemd-login.sym
libsystemd_login_la_LIBADD = \
libsystemd-shared-selinux.la
libsystemd-shared.la
if HAVE_PAM
pam_systemd_la_SOURCES = \
@ -2625,7 +2647,7 @@ pam_systemd_la_LDFLAGS = \
pam_systemd_la_LIBADD = \
libsystemd-daemon.la \
libsystemd-audit.la \
libsystemd-shared-selinux.la \
libsystemd-shared.la \
$(PAM_LIBS) \
$(DBUS_LIBS)
@ -2696,7 +2718,8 @@ systemd_multi_seat_x_SOURCES = \
src/login/multi-seat-x.c
systemd_multi_seat_x_LDADD = \
libsystemd-shared-selinux.la \
libsystemd-label.la \
libsystemd-shared.la \
libudev.la
rootlibexec_PROGRAMS += \

81
src/shared/cgroup-label.c Normal file
View File

@ -0,0 +1,81 @@
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
#include <stdlib.h>
#include <dirent.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <ftw.h>
#include "cgroup-util.h"
#include "log.h"
#include "set.h"
#include "macro.h"
#include "util.h"
#include "mkdir.h"
int cg_create(const char *controller, const char *path) {
char *fs;
int r;
assert(controller);
assert(path);
if ((r = cg_get_path(controller, path, NULL, &fs)) < 0)
return r;
r = mkdir_parents(fs, 0755);
if (r >= 0) {
if (mkdir(fs, 0755) >= 0)
r = 1;
else if (errno == EEXIST)
r = 0;
else
r = -errno;
}
free(fs);
return r;
}
int cg_create_and_attach(const char *controller, const char *path, pid_t pid) {
int r, q;
assert(controller);
assert(path);
assert(pid >= 0);
if ((r = cg_create(controller, path)) < 0)
return r;
if ((q = cg_attach(controller, path, pid)) < 0)
return q;
/* This does not remove the cgroup on failure */
return r;
}

45
src/shared/cgroup-util.c
View File

@ -34,7 +34,6 @@
#include "set.h"
#include "macro.h"
#include "util.h"
#include "mkdir.h"
int cg_enumerate_processes(const char *controller, const char *path, FILE **_f) {
char *fs;
@ -638,32 +637,6 @@ int cg_delete(const char *controller, const char *path) {
return r == -ENOENT ? 0 : r;
}
int cg_create(const char *controller, const char *path) {
char *fs;
int r;
assert(controller);
assert(path);
if ((r = cg_get_path(controller, path, NULL, &fs)) < 0)
return r;
r = mkdir_parents(fs, 0755);
if (r >= 0) {
if (mkdir(fs, 0755) >= 0)
r = 1;
else if (errno == EEXIST)
r = 0;
else
r = -errno;
}
free(fs);
return r;
}
int cg_attach(const char *controller, const char *path, pid_t pid) {
char *fs;
int r;
@ -688,24 +661,6 @@ int cg_attach(const char *controller, const char *path, pid_t pid) {
return r;
}
int cg_create_and_attach(const char *controller, const char *path, pid_t pid) {
int r, q;
assert(controller);
assert(path);
assert(pid >= 0);
if ((r = cg_create(controller, path)) < 0)
return r;
if ((q = cg_attach(controller, path, pid)) < 0)
return q;
/* This does not remove the cgroup on failure */
return r;
}
int cg_set_group_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid) {
char *fs;
int r;

143
src/shared/socket-label.c Normal file
View File

@ -0,0 +1,143 @@
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <assert.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <net/if.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stddef.h>
#include <sys/ioctl.h>
#include "macro.h"
#include "util.h"
#include "mkdir.h"
#include "socket-util.h"
#include "missing.h"
#include "label.h"
int socket_address_listen(
const SocketAddress *a,
int backlog,
SocketAddressBindIPv6Only only,
const char *bind_to_device,
bool free_bind,
bool transparent,
mode_t directory_mode,
mode_t socket_mode,
const char *label,
int *ret) {
int r, fd, one;
assert(a);
assert(ret);
if ((r = socket_address_verify(a)) < 0)
return r;
if (socket_address_family(a) == AF_INET6 && !socket_ipv6_is_supported())
return -EAFNOSUPPORT;
r = label_socket_set(label);
if (r < 0)
return r;
fd = socket(socket_address_family(a), a->type | SOCK_NONBLOCK | SOCK_CLOEXEC, a->protocol);
r = fd < 0 ? -errno : 0;
label_socket_clear();
if (r < 0)
return r;
if (socket_address_family(a) == AF_INET6 && only != SOCKET_ADDRESS_DEFAULT) {
int flag = only == SOCKET_ADDRESS_IPV6_ONLY;
if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &flag, sizeof(flag)) < 0)
goto fail;
}
if (socket_address_family(a) == AF_INET || socket_address_family(a) == AF_INET6) {
if (bind_to_device)
if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, bind_to_device, strlen(bind_to_device)+1) < 0)
goto fail;
if (free_bind) {
one = 1;
if (setsockopt(fd, IPPROTO_IP, IP_FREEBIND, &one, sizeof(one)) < 0)
log_warning("IP_FREEBIND failed: %m");
}
if (transparent) {
one = 1;
if (setsockopt(fd, IPPROTO_IP, IP_TRANSPARENT, &one, sizeof(one)) < 0)
log_warning("IP_TRANSPARENT failed: %m");
}
}
one = 1;
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) < 0)
goto fail;
if (socket_address_family(a) == AF_UNIX && a->sockaddr.un.sun_path[0] != 0) {
mode_t old_mask;
/* Create parents */
mkdir_parents(a->sockaddr.un.sun_path, directory_mode);
/* Enforce the right access mode for the socket*/
old_mask = umask(~ socket_mode);
/* Include the original umask in our mask */
umask(~socket_mode | old_mask);
r = label_bind(fd, &a->sockaddr.sa, a->size);
if (r < 0 && errno == EADDRINUSE) {
/* Unlink and try again */
unlink(a->sockaddr.un.sun_path);
r = bind(fd, &a->sockaddr.sa, a->size);
}
umask(old_mask);
} else
r = bind(fd, &a->sockaddr.sa, a->size);
if (r < 0)
goto fail;
if (socket_address_can_accept(a))
if (listen(fd, backlog) < 0)
goto fail;
*ret = fd;
return 0;
fail:
r = -errno;
close_nointr_nofail(fd);
return r;
}

104
src/shared/socket-util.c
View File

@ -37,7 +37,6 @@
#include "mkdir.h"
#include "socket-util.h"
#include "missing.h"
#include "label.h"
int socket_address_parse(SocketAddress *a, const char *s) {
int r;
@ -384,109 +383,6 @@ int socket_address_print(const SocketAddress *a, char **p) {
}
}
int socket_address_listen(
const SocketAddress *a,
int backlog,
SocketAddressBindIPv6Only only,
const char *bind_to_device,
bool free_bind,
bool transparent,
mode_t directory_mode,
mode_t socket_mode,
const char *label,
int *ret) {
int r, fd, one;
assert(a);
assert(ret);
if ((r = socket_address_verify(a)) < 0)
return r;
if (socket_address_family(a) == AF_INET6 && !socket_ipv6_is_supported())
return -EAFNOSUPPORT;
r = label_socket_set(label);
if (r < 0)
return r;
fd = socket(socket_address_family(a), a->type | SOCK_NONBLOCK | SOCK_CLOEXEC, a->protocol);
r = fd < 0 ? -errno : 0;
label_socket_clear();
if (r < 0)
return r;
if (socket_address_family(a) == AF_INET6 && only != SOCKET_ADDRESS_DEFAULT) {
int flag = only == SOCKET_ADDRESS_IPV6_ONLY;
if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &flag, sizeof(flag)) < 0)
goto fail;
}
if (socket_address_family(a) == AF_INET || socket_address_family(a) == AF_INET6) {
if (bind_to_device)
if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, bind_to_device, strlen(bind_to_device)+1) < 0)
goto fail;
if (free_bind) {
one = 1;
if (setsockopt(fd, IPPROTO_IP, IP_FREEBIND, &one, sizeof(one)) < 0)
log_warning("IP_FREEBIND failed: %m");
}
if (transparent) {
one = 1;
if (setsockopt(fd, IPPROTO_IP, IP_TRANSPARENT, &one, sizeof(one)) < 0)
log_warning("IP_TRANSPARENT failed: %m");
}
}
one = 1;
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) < 0)
goto fail;
if (socket_address_family(a) == AF_UNIX && a->sockaddr.un.sun_path[0] != 0) {
mode_t old_mask;
/* Create parents */
mkdir_parents(a->sockaddr.un.sun_path, directory_mode);
/* Enforce the right access mode for the socket*/
old_mask = umask(~ socket_mode);
/* Include the original umask in our mask */
umask(~socket_mode | old_mask);
r = label_bind(fd, &a->sockaddr.sa, a->size);
if (r < 0 && errno == EADDRINUSE) {
/* Unlink and try again */
unlink(a->sockaddr.un.sun_path);
r = bind(fd, &a->sockaddr.sa, a->size);
}
umask(old_mask);
} else
r = bind(fd, &a->sockaddr.sa, a->size);
if (r < 0)
goto fail;
if (socket_address_can_accept(a))
if (listen(fd, backlog) < 0)
goto fail;
*ret = fd;
return 0;
fail:
r = -errno;
close_nointr_nofail(fd);
return r;
}
bool socket_address_can_accept(const SocketAddress *a) {
assert(a);