This permit to switch to a specific apparmor profile when starting a daemon. This
will result in a non operation if apparmor is disabled.
It also add a new build requirement on libapparmor for using this feature.
$(AUDIT_CFLAGS) \
$(CAP_CFLAGS) \
$(KMOD_CFLAGS) \
+ $(APPARMOR_CFLAGS) \
$(SECCOMP_CFLAGS) \
-pthread
$(AUDIT_LIBS) \
$(CAP_LIBS) \
$(KMOD_LIBS) \
+ $(APPARMOR_LIBS) \
$(SECCOMP_LIBS)
if HAVE_SECCOMP
fi
AM_CONDITIONAL(HAVE_SELINUX, [test "$have_selinux" = "yes"])
+have_apparmor=no
+AC_ARG_ENABLE(apparmor, AS_HELP_STRING([--disable-apparmor], [Disable optional AppArmor support]))
+if test "x$enable_apparmor" != "xno"; then
+ PKG_CHECK_MODULES([APPARMOR], [libapparmor],
+ [AC_DEFINE(HAVE_APPARMOR, 1, [Define if AppArmor is available])
+ have_apparmor=yes
+ M4_DEFINES="$M4_DEFINES -DHAVE_APPARMOR"],
+ [have_apparmor=no])
+ if test "x$have_apparmor" = xno -a "x$enable_apparmor" = xyes; then
+ AC_MSG_ERROR([*** AppArmor support requested but libraries not found])
+ fi
+fi
+AM_CONDITIONAL(HAVE_APPARMOR, [test "$have_apparmor" = "yes"])
+
+
AC_ARG_WITH(debug-shell,
AS_HELP_STRING([--with-debug-shell=PATH],
[Path to debug shell binary]),
PAM: ${have_pam}
AUDIT: ${have_audit}
IMA: ${have_ima}
+ AppArmor: ${have_apparmor}
SELinux: ${have_selinux}
SECCOMP: ${have_seccomp}
SMACK: ${have_smack}
</varlistentry>
<varlistentry>
+ <term><varname>AppArmorProfile=</varname></term>
+
+ <listitem><para>Take a profile name as argument.
+ The process executed by the unit will switch to
+ this profile when started. Profiles must already
+ be loaded in the kernel, or the unit will fail.
+ This result in a non operation if AppArmor is not
+ enabled. If prefixed by <literal>-</literal>, all errors
+ will be ignored.
+ </para></listitem>
+ </varlistentry>
+
+ <varlistentry>
<term><varname>IgnoreSIGPIPE=</varname></term>
<listitem><para>Takes a boolean
#define _SELINUX_FEATURE_ "-SELINUX"
#endif
+#ifdef HAVE_APPARMOR
+#define _APPARMOR_FEATURE_ "+APPARMOR"
+#else
+#define _APPARMOR_FEATURE_ "-APPARMOR"
+#endif
+
#ifdef HAVE_IMA
#define _IMA_FEATURE_ "+IMA"
#else
#define _SECCOMP_FEATURE_ "-SECCOMP"
#endif
-#define SYSTEMD_FEATURES _PAM_FEATURE_ " " _LIBWRAP_FEATURE_ " " _AUDIT_FEATURE_ " " _SELINUX_FEATURE_ " " _IMA_FEATURE_ " " _SYSVINIT_FEATURE_ " " _LIBCRYPTSETUP_FEATURE_ " " _GCRYPT_FEATURE_ " " _ACL_FEATURE_ " " _XZ_FEATURE_ " " _SECCOMP_FEATURE_
+#define SYSTEMD_FEATURES _PAM_FEATURE_ " " _LIBWRAP_FEATURE_ " " _AUDIT_FEATURE_ " " _SELINUX_FEATURE_ " " _IMA_FEATURE_ " " _SYSVINIT_FEATURE_ " " _LIBCRYPTSETUP_FEATURE_ " " _GCRYPT_FEATURE_ " " _ACL_FEATURE_ " " _XZ_FEATURE_ " " _SECCOMP_FEATURE_ " " _APPARMOR_FEATURE_
return sd_bus_message_append(reply, "(bs)", c->selinux_context_ignore, c->selinux_context);
}
+static int property_get_apparmor_profile(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ ExecContext *c = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(c);
+
+ return sd_bus_message_append(reply, "(bs)", c->apparmor_profile_ignore, c->apparmor_profile);
+}
+
static int property_get_personality(
sd_bus *bus,
const char *path,
SD_BUS_PROPERTY("SameProcessGroup", "b", bus_property_get_bool, offsetof(ExecContext, same_pgrp), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("UtmpIdentifier", "s", NULL, offsetof(ExecContext, utmp_id), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SELinuxContext", "(bs)", property_get_selinux_context, 0, SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("AppArmorProfile", "(bs)", property_get_apparmor_profile, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("IgnoreSIGPIPE", "b", bus_property_get_bool, offsetof(ExecContext, ignore_sigpipe), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("NoNewPrivileges", "b", bus_property_get_bool, offsetof(ExecContext, no_new_privileges), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SystemCallFilter", "(bas)", property_get_syscall_filter, 0, SD_BUS_VTABLE_PROPERTY_CONST),
#include <seccomp.h>
#endif
+#ifdef HAVE_APPARMOR
+#include <sys/apparmor.h>
+#endif
+
#include "execute.h"
#include "strv.h"
#include "macro.h"
#include "async.h"
#include "selinux-util.h"
#include "errno-list.h"
+#include "apparmor-util.h"
#ifdef HAVE_SECCOMP
#include "seccomp-util.h"
}
}
#endif
+
+#ifdef HAVE_APPARMOR
+ if (context->apparmor_profile && use_apparmor()) {
+ err = aa_change_onexec(context->apparmor_profile);
+ if (err < 0 && !context->apparmor_profile_ignore) {
+ r = EXIT_APPARMOR_PROFILE;
+ goto fail_child;
+ }
+ }
+#endif
}
err = build_environment(context, n_fds, watchdog_usec, home, username, shell, &our_env);
free(c->selinux_context);
c->selinux_context = NULL;
+ free(c->apparmor_profile);
+ c->apparmor_profile = NULL;
+
#ifdef HAVE_SECCOMP
set_free(c->syscall_filter);
c->syscall_filter = NULL;
fprintf(f,
"%sSystemCallErrorNumber: %s\n",
prefix, strna(errno_to_name(c->syscall_errno)));
+
+ if (c->apparmor_profile)
+ fprintf(f,
+ "%sAppArmorProfile: %s%s\n",
+ prefix, c->apparmor_profile_ignore ? "-" : "", c->apparmor_profile);
}
void exec_status_start(ExecStatus *s, pid_t pid) {
bool selinux_context_ignore;
char *selinux_context;
+ bool apparmor_profile_ignore;
+ char *apparmor_profile;
+
char **read_write_dirs, **read_only_dirs, **inaccessible_dirs;
unsigned long mount_flags;
$1.UtmpIdentifier, config_parse_unit_string_printf, 0, offsetof($1, exec_context.utmp_id)
m4_ifdef(`HAVE_SELINUX',
`$1.SELinuxContext, config_parse_exec_selinux_context, 0, offsetof($1, exec_context)',
-`$1.SELinuxContext, config_parse_warn_compat, 0, 0')'
+`$1.SELinuxContext, config_parse_warn_compat, 0, 0')
+m4_ifdef(`HAVE_APPARMOR',
+`$1.AppArmorProfile, config_parse_exec_apparmor_profile,0, offsetof($1, exec_context)',
+`$1.AppArmorProfile, config_parse_warn_compat, 0, 0')'
)m4_dnl
m4_define(`KILL_CONTEXT_CONFIG_ITEMS',
`$1.SendSIGKILL, config_parse_bool, 0, offsetof($1, kill_context.send_sigkill)
#include "seccomp-util.h"
#endif
-#if !defined(HAVE_SYSV_COMPAT) || !defined(HAVE_SECCOMP) || !defined(HAVE_LIBWRAP) || !defined(HAVE_PAM) || !defined(HAVE_SELINUX) || !defined(HAVE_SMACK)
+#if !defined(HAVE_SYSV_COMPAT) || !defined(HAVE_SECCOMP) || !defined(HAVE_LIBWRAP) || !defined(HAVE_PAM) || !defined(HAVE_SELINUX) || !defined(HAVE_SMACK) || !defined(HAVE_APPARMOR)
int config_parse_warn_compat(
const char *unit,
const char *filename,
return 0;
}
+int config_parse_exec_apparmor_profile(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ ExecContext *c = data;
+ Unit *u = userdata;
+ bool ignore;
+ char *k;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (isempty(rvalue)) {
+ free(c->apparmor_profile);
+ c->apparmor_profile = NULL;
+ c->apparmor_profile_ignore = false;
+ return 0;
+ }
+
+ if (rvalue[0] == '-') {
+ ignore = true;
+ rvalue++;
+ } else
+ ignore = false;
+
+ r = unit_name_printf(u, rvalue, &k);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve specifiers, ignoring: %s", strerror(-r));
+ return 0;
+ }
+
+ free(c->apparmor_profile);
+ c->apparmor_profile = k;
+ c->apparmor_profile_ignore = ignore;
+
+ return 0;
+}
+
int config_parse_timer(const char *unit,
const char *filename,
unsigned line,
const ConfigParserCallback callback;
const char *rvalue;
} table[] = {
-#if !defined(HAVE_SYSV_COMPAT) || !defined(HAVE_SECCOMP) || !defined(HAVE_LIBWRAP) || !defined(HAVE_PAM) || !defined(HAVE_SELINUX) || !defined(HAVE_SMACK)
+#if !defined(HAVE_SYSV_COMPAT) || !defined(HAVE_SECCOMP) || !defined(HAVE_LIBWRAP) || !defined(HAVE_PAM) || !defined(HAVE_SELINUX) || !defined(HAVE_SMACK) || !defined(HAVE_APPARMOR)
{ config_parse_warn_compat, "NOTSUPPORTED" },
#endif
{ config_parse_int, "INTEGER" },
int config_parse_job_mode_isolate(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
int config_parse_exec_selinux_context(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
int config_parse_personality(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_exec_apparmor_profile(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
/* gperf prototypes */
const struct ConfigPerfItem* load_fragment_gperf_lookup(const char *key, unsigned length);
case EXIT_PERSONALITY:
return "PERSONALITY";
+
+ case EXIT_APPARMOR_PROFILE:
+ return "APPARMOR";
}
}
EXIT_NO_NEW_PRIVILEGES,
EXIT_SECCOMP,
EXIT_SELINUX_CONTEXT,
- EXIT_PERSONALITY /* 230 */
+ EXIT_PERSONALITY, /* 230 */
+ EXIT_APPARMOR_PROFILE
} ExitStatus;
typedef enum ExitStatusLevel {