--- /dev/null
+Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd. All rights reserved.\r
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
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+ meet the following conditions:
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+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
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+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
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+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
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+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+\r
--- /dev/null
+SUBDIRS = .
+
+AM_CPPFLAGS = \
+ -include $(top_builddir)/config.h \
+ -I $(top_srcdir)/src \
+ -I $(top_srcdir)/src/shared \
+ $(DEFAULT_CFLAGS)
+
+AM_CFLAGS = $(OUR_CFLAGS)
+AM_LDFLAGS = $(OUR_LDFLAGS)
+
+bin_PROGRAMS = \
+ systemd_user_helper
+
+systemd_user_helper_SOURCES = \
+ src/systemd-user-helper/systemd-user-helper.c
+
+systemd_user_helper_CFLAGS = \
+ $(AM_CFLAGS) \
+ ${TZPLATFORMCONF_CFLAGS}
+
+systemd_user_helper_LDADD = \
+ ${TZPLATFORMCONF_LIBS} \
+ -ldl
--- /dev/null
+#!/bin/sh
+
+set -e
+
+if [ -f .git/hooks/pre-commit.sample ] && [ ! -f .git/hooks/pre-commit ]; then
+ # This part is allowed to fail
+ cp -p .git/hooks/pre-commit.sample .git/hooks/pre-commit && \
+ chmod +x .git/hooks/pre-commit && \
+ echo "Activated pre-commit hook." || :
+fi
+
+# README and INSTALL are required by automake, but may be deleted by
+# clean up rules. to get automake to work, simply touch these here,
+# they will be regenerated from their corresponding *.in files by
+# ./configure anyway.
+touch README INSTALL
+
+# Make sure m4 directory exist
+mkdir -p m4
+
+autoreconf --force --install --verbose || exit $?
--- /dev/null
+# -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.68])
+AC_INIT(session-utils, 0.1, [BUG-REPORT-ADDRESS])
+AC_CONFIG_HEADERS([config.h])
+
+AC_USE_SYSTEM_EXTENSIONS
+AC_SYS_LARGEFILE
+AC_PREFIX_DEFAULT([/usr])
+AM_INIT_AUTOMAKE([foreign])
+
+# Checks for programs.
+AC_PROG_MKDIR_P
+AC_PROG_LN_S
+AC_PROG_SED
+AC_PROG_GREP
+AC_PROG_AWK
+#AC_PROG_INSTALL
+
+AC_PROG_CC
+AM_PROG_CC_C_O
+
+AC_SUBST([OUR_CFLAGS], "$our_cflags")
+dnl AC_SUBST([OUR_CPPFLAGS], "$OUR_CFLAGS -Wp,-D_FORTIFY_SOURCE=2")
+AC_SUBST([OUR_LDFLAGS], "$our_ldflags")
+
+PKG_CHECK_MODULES(TZPLATFORMCONF, libtzplatform-config)
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT
--- /dev/null
+<manifest>
+ <request>
+ <domain name="_"/>
+ </request>
+ <assign>
+ <filesystem path="/usr/bin/systemd_user_helper" label="_" exec_label="System::Privileged" />
+ </assign>
+</manifest>
--- /dev/null
+Name: session-utils
+Summary: System utils for supporting multi-user environment
+Version: 0.1
+Release: 0
+Group: Base/Startup
+License: Apache-2.0
+Source0: %{name}-%{version}.tar.bz2
+Source1: %{name}.manifest
+
+BuildRequires: pkgconfig(libtzplatform-config)
+
+%description
+This package provides some utils for session control in multi-user environment.
+
+%prep
+%setup -q
+
+%build
+cp %{SOURCE1} .
+
+./autogen.sh
+%reconfigure \
+ --disable-static \
+ --prefix=%{_prefix} \
+ --disable-debug-mode \
+ --disable-eng-mode
+
+%__make %{?jobs:-j%jobs} \
+ CFLAGS+=-DLIBDIR=\\\"%{_libdir}\\\"
+
+%install
+rm -rf %{buildroot}
+%make_install
+
+%files
+%license LICENSE.Apache-2.0
+%manifest session-utils.manifest
+%caps(cap_sys_admin,cap_mac_admin,cap_mac_override,cap_dac_override,cap_setgid=ei) %{_bindir}/systemd_user_helper
+
+#TODO: when uninstalling, it should be restored to original file
+%posttrans
+cp -a /usr/lib/systemd/system/user\@.service /usr/lib/systemd/system/__user@.service
+/usr/bin/sed -i -e 's/Type=\(.*\)/Type=forking/' /usr/lib/systemd/system/user\@.service
+/usr/bin/sed -i -e 's/ExecStart=\(.*\)/ExecStart=\/usr\/bin\/systemd_user_helper start %i/' /usr/lib/systemd/system/user\@.service
+/usr/bin/sed -i -e '/ExecStart=\(.*\)/ a ExecStop=\/usr\/bin\/systemd_user_helper stop %i' /usr/lib/systemd/system/user\@.service
+/usr/bin/sed -i -e '/PIDFile=\(.*\)/d' /usr/lib/systemd/system/user\@.service
+/usr/bin/sed -i -e '/XDG_RUNTIME_DIR/ a Environment=XDG_RUNTIME_EXT_DIR=/run/user_ext/%i' /usr/lib/systemd/system/user\@.service
+echo 'PIDFile=/run/user/%i/.systemd.pid' >> /usr/lib/systemd/system/user\@.service
+echo "d /run/user_ext 0755 root root -" >> /usr/lib/tmpfiles.d/systemd.conf
--- /dev/null
+/*
+ * Copyright (c) 2016 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the License);
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/*
+ * @file systemd-user-helper.c
+ * @brief Systemd user launch helper for supporting Tizen specific feature
+ *
+ * Systemd user launch helper supports Tizen specific feature like directory
+ * compatibility and container.
+ */
+
+#include <dlfcn.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/stat.h>
+
+#include <sched.h>
+#include <sys/mount.h>
+
+#include <tzplatform_config.h>
+
+#include <sys/types.h>
+#include <grp.h>
+#include <string.h>
+
+#define ARRAY_SIZE(name) (sizeof(name)/sizeof(name[0]))
+#define PIDFILE_PATH ".systemd.pid"
+
+// For compatibility, Using hard-coded path
+#define LEGACY_CONTENTS_DIR "/opt/usr/media"
+#define LEGACY_APPS_DIR "/opt/usr/apps"
+
+#define LAZYMOUNT_LIB LIBDIR"/liblazymount.so.0"
+#define CONTAINER_LIB LIBDIR"/security/pam_krate.so"
+
+#define LOAD_SYMBOL(handle, sym, name) \
+ do { \
+ sym = dlsym(handle, name); \
+ if (!sym) { \
+ fprintf(stderr, "dlsym %s error\n", name); \
+ dlclose(handle); \
+ return -1; \
+ } \
+ } while (0);
+
+#define MOUNT_SIZE "10000k"
+#define MAX_GRP_BUF_SIZE (1024 * 4)
+#define GRP_NAME_SYSTEM_SHARE "system_share"
+
+static void *container_handle = NULL;
+
+static const char *systemd_arg[] = {
+ "/usr/lib/systemd/systemd",
+ "--user",
+ NULL
+};
+
+int mac_smack_use(void) {
+ static int cached_use = -1;
+
+ if (cached_use < 0)
+ cached_use = access("/sys/fs/smackfs/", F_OK) >= 0;
+
+ return cached_use;
+}
+
+static int mount_user_ext(char *username)
+{
+ char *mount_point = NULL;
+ char *mount_option = NULL;
+ uid_t mnt_uid;
+ gid_t mnt_gid;
+ struct group *p_grp = NULL, grp_buf;
+ char buf[MAX_GRP_BUF_SIZE];
+ int r;
+
+ mnt_uid = atoi(username);
+ if(mnt_uid <= 0)
+ return -1;
+
+ r = asprintf(&mount_point, "/run/user_ext/%s", username);
+ if (r < 0) {
+ fprintf(stderr, "Failed to set mount point for user_ext\n");
+ return r;
+ }
+
+ (void) mkdir(mount_point, 0750);
+
+ r = getgrnam_r(GRP_NAME_SYSTEM_SHARE, &grp_buf, buf, sizeof(buf), &p_grp);
+ if( r == 0 && p_grp != NULL)
+ {
+ mnt_gid = p_grp->gr_gid;
+ }
+ else
+ {
+ free(mount_point);
+ return -2;
+ }
+
+ if (mac_smack_use())
+ r = asprintf(&mount_option, "mode=0750,smackfsroot=*,uid=%d,gid=%d,size=%s", mnt_uid, mnt_gid, MOUNT_SIZE);
+ else
+ r = asprintf(&mount_option, "mode=0750,uid=%d,gid=%d,size=%s", mnt_uid, mnt_gid, MOUNT_SIZE);
+
+ if (r < 0) {
+ fprintf(stderr, "Failed to set mount option for user_ext\n");
+ free(mount_point);
+ return r;
+ }
+
+ r = mount("tmpfs", mount_point, "tmpfs", MS_NODEV|MS_NOSUID|MS_NOEXEC, mount_option);
+ free(mount_point);
+ free(mount_option);
+
+ if (r < 0) {
+ fprintf(stderr, "Failed to mount user_ext\n");
+ return r;
+ }
+ return 0;
+}
+
+static int umount_user_ext(char *username)
+{
+ int r;
+ char *mount_point = NULL;
+
+ r = asprintf(&mount_point, "/run/user_ext/%s", username);
+ if (r < 0) {
+ fprintf(stderr, "Failed to set mount point for user_ext\n");
+ return r;
+ }
+ r = umount2(mount_point, MNT_DETACH);
+ if (r < 0) {
+ fprintf(stderr, "Failed to umount user_ext\n");
+ free(mount_point);
+ return r;
+ }
+ r = rmdir(mount_point);
+ if (r < 0) {
+ fprintf(stderr, "Failed to rmdir user_ext\n");
+ free(mount_point);
+ return r;
+ }
+ free(mount_point);
+ return 0;
+}
+
+static int stop_process(char *username)
+{
+ int r;
+
+ (void)umount_user_ext(username);
+ r = umount2(tzplatform_getenv(TZ_USER_CONTENT), MNT_DETACH);
+ if (r < 0) {
+ fprintf(stderr, "Warning : Failed to umount user content\n");
+ }
+
+ r = umount2(tzplatform_getenv(TZ_USER_APP), MNT_DETACH);
+ if (r < 0) {
+ fprintf(stderr, "Warning : Failed to umount application content\n");
+ }
+ return 0;
+}
+
+static int normal_user_preprocess(char *username)
+{
+ int r;
+
+ r = unshare(CLONE_NEWNS);
+ if (r < 0) {
+ fprintf(stderr, "unshare failed\n");
+ return r;
+ }
+
+ r = mount(NULL, "/", NULL, MS_SLAVE | MS_REC, NULL);
+ if (r < 0) {
+ fprintf(stderr, "Failed to change the propagation type of root to SLAVE\n");
+ return r;
+ }
+
+ return 0;
+}
+
+static int normal_user_postprocess(char *username)
+{
+ int r;
+ r = mount(tzplatform_getenv(TZ_USER_CONTENT),
+ LEGACY_CONTENTS_DIR, NULL, MS_BIND, NULL);
+ if (r < 0) {
+ fprintf(stderr, "user content bind mount failed - %d\n", errno);
+ return r;
+ }
+
+ r = mount(tzplatform_getenv(TZ_USER_APP),
+ LEGACY_APPS_DIR, NULL, MS_BIND, NULL);
+ if (r < 0) {
+ fprintf(stderr, "user app bind mount failed - %d\n", errno);
+ return r;
+ }
+
+ return 0;
+}
+
+static int container_open(void)
+{
+ if (container_handle)
+ return 0;
+
+ container_handle = dlopen(CONTAINER_LIB, RTLD_LAZY);
+ if (!container_handle) {
+ fprintf(stderr, "container module dlopen error\n");
+ return -1;
+ }
+ return 0;
+}
+
+static int container_preprocess(char *username)
+{
+ int r;
+ int (*handle_preprocess)(char *);
+
+ r = container_open();
+ if (r < 0)
+ return r;
+
+ LOAD_SYMBOL(container_handle, handle_preprocess, "container_preprocess");
+
+ r = handle_preprocess(username);
+ if (r < 0) {
+ fprintf(stderr, "container module preprocess error\n");
+ return r;
+ }
+
+ return 0;
+}
+
+static int container_postprocess(char *username)
+{
+ int r;
+ int (*handle_postprocess)(char *);
+
+ r = container_open();
+ if (r < 0)
+ return r;
+
+ LOAD_SYMBOL(container_handle, handle_postprocess, "container_postprocess");
+
+ r = handle_postprocess(username);
+ if (r < 0) {
+ fprintf(stderr, "container module postprocess error\n");
+ return r;
+ }
+
+ return 0;
+}
+
+static int wait_condition(void)
+{
+ int r;
+ void *h;
+
+ int (*wait_mount_user)(void);
+
+ r = access(LAZYMOUNT_LIB, F_OK);
+ if (r < 0) {
+ fprintf(stderr, "cannot find lazymount module - No support lazymount\n");
+ return 0;
+ }
+
+ h = dlopen(LAZYMOUNT_LIB, RTLD_LAZY);
+ if (!h) {
+ fprintf(stderr, "lazymount module dlopen error\n");
+ return -1;
+ }
+
+ LOAD_SYMBOL(h, wait_mount_user, "wait_mount_user");
+
+ r = wait_mount_user();
+ if (r < 0) {
+ fprintf(stderr, "wait_mout_user failed\n");
+ dlclose(h);
+ return r;
+ }
+
+ dlclose(h);
+ return 0;
+}
+
+static int make_pid_file(int pid, char* user_id)
+{
+ FILE *fp;
+ char pidpath[PATH_MAX];
+ int r = 0;
+
+ snprintf(pidpath, PATH_MAX, "/run/user/%s/%s", user_id, PIDFILE_PATH);
+
+ fp = fopen(pidpath, "w+");
+ if (fp != NULL) {
+ fprintf(fp, "%d", pid);
+ fclose(fp);
+ } else
+ r = -1;
+
+ return r;
+}
+
+static int change_smack_for_user_session()
+{
+ FILE *fp;
+ int r = 0;
+
+ fp = fopen("/proc/self/attr/current", "w");
+
+ if(fp == NULL)
+ {
+ r = -errno;
+ return r;
+ }
+ r = fputs("User", fp);
+ if(r == EOF)
+ {
+ fclose(fp);
+ r = -errno;
+ return r;
+ }
+ fclose(fp);
+
+ return 0;
+}
+
+int run_child(int argc, const char *argv[], char* user_id)
+{
+ pid_t pid;
+ int r = 0;
+ int i;
+
+ if (!argv)
+ return -EINVAL;
+
+ pid = fork();
+
+ if (pid < 0) {
+ fprintf(stderr, "failed to fork");
+ r = -errno;
+ } else if (pid == 0) {
+ for (i = 0; i < _NSIG; ++i)
+ signal(i, SIG_DFL);
+
+ r = execv(argv[0], (char **)argv);
+ /* NOT REACH */
+ } else{
+ make_pid_file(pid, user_id);
+ r = pid;
+ }
+
+ return r;
+}
+
+int main(int argc, char *argv[])
+{
+ int r = 0;
+ int support_container = 0;
+ char *operation;
+ char *username;
+
+ if (argc < 3) {
+ fprintf(stderr, "require user argument\n");
+ return -1;
+ }
+ operation = argv[1];
+ username = argv[2];
+
+ if (strcmp(operation,"stop") == 0) {
+ return stop_process(username);
+ } else if (strcmp(operation, "start") == 0) {
+ } else {
+ fprintf(stderr, "option is invalid(%s)\n", operation);
+ return -2;
+ }
+
+ r = mount_user_ext(username);
+ if (r < 0) {
+ fprintf(stderr, "mount user_ext failed\n");
+ return r;
+ }
+ r = change_smack_for_user_session();
+ if(r != 0)
+ {
+ fprintf(stderr, "failed to change smack\n");
+ return r;
+ }
+
+ /* pre-processing */
+ r = normal_user_preprocess(username);
+ if (r < 0) {
+ fprintf(stderr, "normal user preprocess failed\n");
+ return r;
+ }
+
+ /* If container supports below funcs, below line should be enabled. */
+ support_container = (access(CONTAINER_LIB, F_OK) == 0) ? 1 : 0;
+ if (support_container) {
+ r = container_preprocess(username);
+ if (r < 0) {
+ fprintf(stderr, "container preprocess failed\n");
+ return r;
+ }
+ }
+
+ r = run_child(ARRAY_SIZE(systemd_arg), systemd_arg, username);
+ if (r < 0) {
+ fprintf(stderr, "systemd user execution failed\n");
+ return r;
+ } else{
+ fprintf(stderr, "success = pid = %d\n", r);
+ }
+
+ /* sync-style since there is no need to process other signal */
+ wait_condition();
+
+ /* post-processing */
+ r = normal_user_postprocess(username);
+ if (r < 0) {
+ fprintf(stderr, "normal user postprocess failed\n");
+ return r;
+ }
+
+ if (support_container) {
+ r = container_postprocess(username);
+ if (r < 0) {
+ fprintf(stderr, "container postprocess failed\n");
+ return r;
+ }
+ }
+
+ return 0;
+}
+
+
projects / platform / core / system / session-utils.git / commitdiff