<term><varname>systemd.setenv=</varname></term>
<listitem><para>Takes a string
- argument in the form
- VARIABLE=VALUE. May be used to set
- environment variables for the init
- process and all its children at boot
- time. May be used more than once to
- set multiple variables. If the equal
- sign and variable are missing it unsets
- an environment variable which might be
- passed in from the initial ram
- disk.</para></listitem>
+ argument in the form VARIABLE=VALUE.
+ May be used to set default environment
+ variables to add to forked child processes.
+ May be used more than once to set multiple
+ variables.</para></listitem>
</varlistentry>
<varlistentry>
#include "macro.h"
#include "virt.h"
#include "fileio.h"
+#include "strv.h"
enum {
/* We don't list LC_ALL here on purpose. People should be
[VARIABLE_LC_IDENTIFICATION] = "LC_IDENTIFICATION"
};
-int locale_setup(void) {
+int locale_setup(char ***environment) {
+ char **env;
char *variables[_VARIABLE_MAX] = {};
int r = 0, i;
}
for (i = 0; i < _VARIABLE_MAX; i++) {
- if (variables[i]) {
- if (setenv(variable_names[i], variables[i], 1) < 0) {
- r = -errno;
- goto finish;
- }
- } else
- unsetenv(variable_names[i]);
+ if (!variables[i])
+ continue;
+
+ env = strv_appendf(*environment, "%s=%s", variable_names[i], variables[i]);
+ if (!env) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ *environment = env;
}
r = 0;
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-int locale_setup(void);
+int locale_setup(char ***environment);
#endif
#include "hostname-setup.h"
#include "machine-id-setup.h"
-#include "locale-setup.h"
#include "selinux-setup.h"
#include "ima-setup.h"
#include "fileio.h"
arg_default_std_error = r;
} else if (startswith(word, "systemd.setenv=")) {
_cleanup_free_ char *cenv = NULL;
- char *eq;
- int r;
cenv = strdup(word + 15);
if (!cenv)
return -ENOMEM;
- eq = strchr(cenv, '=');
- if (!eq) {
- if (!env_name_is_valid(cenv))
- log_warning("Environment variable name '%s' is not valid. Ignoring.", cenv);
- else {
- r = unsetenv(cenv);
- if (r < 0)
- log_warning("Unsetting environment variable '%s' failed, ignoring: %m", cenv);
- }
- } else {
- if (!env_assignment_is_valid(cenv))
- log_warning("Environment variable assignment '%s' is not valid. Ignoring.", cenv);
- else {
- *eq = 0;
- r = setenv(cenv, eq + 1, 1);
- if (r < 0)
- log_warning("Setting environment variable '%s=%s' failed, ignoring: %m", cenv, eq + 1);
- }
- }
+ if (env_assignment_is_valid(cenv)) {
+ char **env;
+
+ env = strv_env_set(arg_default_environment, cenv);
+ if (env)
+ arg_default_environment = env;
+ else
+ log_warning("Setting environment variable '%s' failed, ignoring: %m", cenv);
+ } else
+ log_warning("Environment variable name '%s' is not valid. Ignoring.", cenv);
} else if (startswith(word, "systemd.") ||
(in_initrd() && startswith(word, "rd.systemd."))) {
if (serialization)
assert_se(fdset_remove(fds, fileno(serialization)) >= 0);
- /* Set up PATH unless it is already set */
- setenv("PATH",
-#ifdef HAVE_SPLIT_USR
- "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
-#else
- "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin",
-#endif
- arg_running_as == SYSTEMD_SYSTEM);
-
if (arg_running_as == SYSTEMD_SYSTEM) {
- /* Unset some environment variables passed in from the
- * kernel that don't really make sense for us. */
- unsetenv("HOME");
- unsetenv("TERM");
-
- /* When we are invoked by a shell, these might be set,
- * but make little sense to pass on */
- unsetenv("PWD");
- unsetenv("SHLVL");
- unsetenv("_");
-
- /* When we are invoked by a chroot-like tool such as
- * nspawn, these might be set, but make little sense
- * to pass on */
- unsetenv("USER");
- unsetenv("LOGNAME");
-
- /* We suppress the socket activation env vars, as
- * we'll try to match *any* open fd to units if
- * possible. */
- unsetenv("LISTEN_FDS");
- unsetenv("LISTEN_PID");
-
- /* All other variables are left as is, so that clients
- * can still read them via /proc/1/environ */
-
/* Become a session leader if we aren't one yet. */
setsid();
log_debug(PACKAGE_STRING " running in user mode. (" SYSTEMD_FEATURES ")");
if (arg_running_as == SYSTEMD_SYSTEM && !skip_setup) {
- locale_setup();
-
if (arg_show_status || plymouth_running())
status_welcome();
manager_set_default_rlimits(m, arg_default_rlimit);
if (arg_default_environment)
- manager_set_default_environment(m, arg_default_environment);
+ manager_environment_add(m, arg_default_environment);
manager_set_show_status(m, arg_show_status);
#include "util.h"
#include "mkdir.h"
#include "ratelimit.h"
+#include "locale-setup.h"
#include "mount-setup.h"
#include "unit-name.h"
#include "dbus-unit.h"
return 0;
}
-static void manager_strip_environment(Manager *m) {
+static int manager_default_environment(Manager *m) {
+#ifdef HAVE_SPLIT_USR
+ const char *path = "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin";
+#else
+ const char *path = "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin";
+#endif
+
assert(m);
- /* Remove variables from the inherited set that are part of
- * the container interface:
- * http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface */
- strv_remove_prefix(m->environment, "container=");
- strv_remove_prefix(m->environment, "container_");
+ if (m->running_as == SYSTEMD_SYSTEM) {
+ /* The system manager always starts with a clean
+ * environment for its children. It does not import
+ * the kernel or the parents exported variables.
+ *
+ * The initial passed environ is untouched to keep
+ * /proc/self/environ valid; it is used for tagging
+ * the init process inside containers. */
+ m->environment = strv_new(path, NULL);
+
+ /* Import locale variables LC_*= from configuration */
+ locale_setup(&m->environment);
+ } else
+ /* The user manager passes its own environment
+ * along to its children. */
+ m->environment = strv_copy(environ);
- /* Remove variables from the inherited set that are part of
- * the initrd interface:
- * http://www.freedesktop.org/wiki/Software/systemd/InitrdInterface */
- strv_remove_prefix(m->environment, "RD_");
+ if (!m->environment)
+ return -ENOMEM;
- /* Drop invalid entries */
- strv_env_clean(m->environment);
+ return 0;
}
int manager_new(SystemdRunningAs running_as, bool reexecuting, Manager **_m) {
m->epoll_fd = m->dev_autofs_fd = -1;
m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
- m->environment = strv_copy(environ);
- if (!m->environment)
+ r = manager_default_environment(m);
+ if (r < 0)
goto fail;
- manager_strip_environment(m);
-
if (!(m->units = hashmap_new(string_hash_func, string_compare_func)))
goto fail;
remove_generator_dir(m, &m->generator_unit_path_late);
}
-int manager_set_default_environment(Manager *m, char **environment) {
+int manager_environment_add(Manager *m, char **environment) {
char **e = NULL;
assert(m);
unsigned manager_dispatch_run_queue(Manager *m);
unsigned manager_dispatch_dbus_queue(Manager *m);
-int manager_set_default_environment(Manager *m, char **environment);
+int manager_environment_add(Manager *m, char **environment);
int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit);
int manager_loop(Manager *m);
return NULL;
}
+char **strv_appendf(char **l, const char *format, ...) {
+ va_list ap;
+ _cleanup_free_ char *s = NULL;
+ int r;
+
+ va_start(ap, format);
+ r = vasprintf(&s, format, ap);
+ va_end(ap);
+
+ if (r < 0)
+ return NULL;
+
+ return strv_append(l, s);
+}
+
int strv_push(char ***l, char *value) {
char **c;
unsigned n;
char **strv_merge(char **a, char **b);
char **strv_merge_concat(char **a, char **b, const char *suffix);
char **strv_append(char **l, const char *s);
+char **strv_appendf(char **l, const char *format, ...) _printf_attr_(2, 3);
int strv_extend(char ***l, const char *value);
int strv_push(char ***l, char *value);
~ianmdlvl / elogind.git / commitdiff