for details.</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>SELinuxLabelViaNet=</varname></term>
+ <listitem><para>Takes a boolean
+ value. Controls whether systemd attempts to figure out
+ SELinux label used for instantiated service from
+ information handed by peer over the
+ network. Configuration option has effect only
+ on sockets with <literal>Accept=</literal>
+ mode set to <literal>yes</literal>.</para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><varname>PipeSize=</varname></term>
<listitem><para>Takes a size in
#include "af-list.h"
#include "mkdir.h"
#include "apparmor-util.h"
+#include "label.h"
#ifdef HAVE_SECCOMP
#include "seccomp-util.h"
goto fail_child;
}
}
+
+ if (context->selinux_label_via_net && use_selinux()) {
+ _cleanup_free_ char *label = NULL;
+
+ err = label_get_child_label(socket_fd, command->path, &label);
+ if (err < 0) {
+ r = EXIT_SELINUX_CONTEXT;
+ goto fail_child;
+ }
+
+ err = setexeccon(label);
+ if (err < 0) {
+ r = EXIT_SELINUX_CONTEXT;
+ goto fail_child;
+ }
+ }
#endif
#ifdef HAVE_APPARMOR
"%sPrivateDevices: %s\n"
"%sProtectHome: %s\n"
"%sProtectSystem: %s\n"
- "%sIgnoreSIGPIPE: %s\n",
+ "%sIgnoreSIGPIPE: %s\n"
+ "%sSELinuxLabelViaNet: %s\n",
prefix, c->umask,
prefix, c->working_directory ? c->working_directory : "/",
prefix, c->root_directory ? c->root_directory : "/",
prefix, yes_no(c->private_devices),
prefix, protect_home_to_string(c->protect_home),
prefix, protect_system_to_string(c->protect_system),
- prefix, yes_no(c->ignore_sigpipe));
+ prefix, yes_no(c->ignore_sigpipe),
+ prefix, yes_no(c->selinux_label_via_net));
STRV_FOREACH(e, c->environment)
fprintf(f, "%sEnvironment: %s\n", prefix, *e);
bool selinux_context_ignore;
char *selinux_context;
+ bool selinux_label_via_net;
bool apparmor_profile_ignore;
char *apparmor_profile;
`Socket.SmackLabel, config_parse_warn_compat, 0, 0
Socket.SmackLabelIPIn, config_parse_warn_compat, 0, 0
Socket.SmackLabelIPOut, config_parse_warn_compat, 0, 0')
+m4_ifdef(`HAVE_SELINUX',
+`Socket.SELinuxLabelViaNet, config_parse_bool, 0, offsetof(Socket, selinux_label_via_net)',
+`Socket.SELinuxLabelViaNet, config_parse_warn_compat, 0, 0')
EXEC_CONTEXT_CONFIG_ITEMS(Socket)m4_dnl
CGROUP_CONTEXT_CONFIG_ITEMS(Socket)m4_dnl
KILL_CONTEXT_CONFIG_ITEMS(Socket)m4_dnl
#include <mqueue.h>
#include <sys/xattr.h>
+#ifdef HAVE_SELINUX
+#include <selinux/selinux.h>
+#endif
+
#include "sd-event.h"
#include "log.h"
#include "load-dropin.h"
"%sPassCredentials: %s\n"
"%sPassSecurity: %s\n"
"%sTCPCongestion: %s\n"
- "%sRemoveOnStop: %s\n",
+ "%sRemoveOnStop: %s\n"
+ "%sSELinuxLabelViaNet: %s\n",
prefix, socket_state_to_string(s->state),
prefix, socket_result_to_string(s->result),
prefix, socket_address_bind_ipv6_only_to_string(s->bind_ipv6_only),
prefix, yes_no(s->pass_cred),
prefix, yes_no(s->pass_sec),
prefix, strna(s->tcp_congestion),
- prefix, yes_no(s->remove_on_stop));
+ prefix, yes_no(s->remove_on_stop),
+ prefix, yes_no(s->selinux_label_via_net));
if (s->control_pid > 0)
fprintf(f,
continue;
if (p->type == SOCKET_SOCKET) {
-
+#ifdef HAVE_SELINUX
+ if (!know_label && s->selinux_label_via_net) {
+ r = getcon(&label);
+ if (r < 0)
+ return r;
+ know_label = true;
+ }
+#endif
if (!know_label) {
r = socket_instantiate_service(s);
cfd = -1;
s->n_connections ++;
+ if (s->selinux_label_via_net)
+ service->exec_context.selinux_label_via_net = true;
+
r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT(service), JOB_REPLACE, true, &error, NULL);
if (r < 0)
goto fail;
char *smack_ip_in;
char *smack_ip_out;
+ bool selinux_label_via_net;
+
char *user, *group;
};
#ifdef HAVE_SELINUX
#include <selinux/selinux.h>
#include <selinux/label.h>
+#include <selinux/context.h>
#endif
#include "label.h"
return r;
}
+int label_get_child_label(int socket_fd, const char *exe, char **label) {
+ int r = 0;
+
+#ifdef HAVE_SELINUX
+
+ security_context_t mycon = NULL, peercon = NULL, fcon = NULL, ret = NULL;
+ security_class_t sclass;
+ context_t pcon = NULL, bcon = NULL;
+ const char *range = NULL;
+
+ assert(socket_fd >= 0);
+ assert(exe);
+ assert(label);
+
+ r = getcon(&mycon);
+ if (r < 0)
+ goto out;
+
+ r = getpeercon(socket_fd, &peercon);
+ if (r < 0)
+ goto out;
+
+ r = getfilecon(exe, &fcon);
+ if (r < 0)
+ goto out;
+
+ bcon = context_new(mycon);
+ if (!bcon)
+ goto out;
+
+ pcon = context_new(peercon);
+ if (!pcon)
+ goto out;
+
+ range = context_range_get(pcon);
+ if (!range)
+ goto out;
+
+ r = context_range_set(bcon, range);
+ if (r)
+ goto out;
+
+ freecon(mycon);
+ mycon = context_str(bcon);
+ if (!mycon)
+ goto out;
+
+ sclass = string_to_security_class("process");
+ r = security_compute_create(mycon, fcon, sclass, &ret);
+ if (r < 0)
+ goto out;
+
+ *label = ret;
+
+out:
+ if (r && security_getenforce() == 1)
+ r = -errno;
+
+ freecon(mycon);
+ freecon(peercon);
+ freecon(fcon);
+ context_free(pcon);
+ context_free(bcon);
+
+#endif
+ return r;
+}
+
int label_context_set(const char *path, mode_t mode) {
int r = 0;
void label_free(const char *label);
int label_get_create_label_from_exe(const char *exe, char **label);
+int label_get_child_label(int socket_fd, const char *exec, char **label);
int label_mkdir(const char *path, mode_t mode);