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authorIago López Galeiras <iaguis@gmail.com>2015-11-09 11:32:34 +0100
committerIago López Galeiras <iaguis@gmail.com>2015-11-09 16:40:05 +0100
commit6aadfa4c5239f6cd2a80e82f6bc102cc116583df (patch)
treed38cfce939d81c7fcff857ef14234aa10c36c0b9
parent2933d599c242ebfc70ddcffe59163916b02270f1 (diff)
nspawn: support custom container service name
We were hardcoding "systemd-nspawn" as the value of the $container env variable and "nspawn" as the service string in machined registration. This commit allows the user to configure it by setting the $SYSTEMD_NSPAWN_CONTAINER_SERVICE env variable when calling systemd-nspawn. If $SYSTEMD_NSPAWN_CONTAINER_SERVICE is not set, we use the string "systemd-nspawn" for both, fixing the previous inconsistency.
-rw-r--r--src/nspawn/nspawn-register.c7
-rw-r--r--src/nspawn/nspawn-register.h2
-rw-r--r--src/nspawn/nspawn.c17
3 files changed, 18 insertions, 8 deletions
diff --git a/src/nspawn/nspawn-register.c b/src/nspawn/nspawn-register.c
index 7139ad9958..374f958c20 100644
--- a/src/nspawn/nspawn-register.c
+++ b/src/nspawn/nspawn-register.c
@@ -39,7 +39,8 @@ int register_machine(
unsigned n_mounts,
int kill_signal,
char **properties,
- bool keep_unit) {
+ bool keep_unit,
+ const char *service) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_flush_close_unref_ sd_bus *bus = NULL;
@@ -61,7 +62,7 @@ int register_machine(
"sayssusai",
machine_name,
SD_BUS_MESSAGE_APPEND_ID128(uuid),
- "nspawn",
+ service,
"container",
(uint32_t) pid,
strempty(directory),
@@ -86,7 +87,7 @@ int register_machine(
"sayssusai",
machine_name,
SD_BUS_MESSAGE_APPEND_ID128(uuid),
- "nspawn",
+ service,
"container",
(uint32_t) pid,
strempty(directory),
diff --git a/src/nspawn/nspawn-register.h b/src/nspawn/nspawn-register.h
index b27841ff59..d3bfd84e5e 100644
--- a/src/nspawn/nspawn-register.h
+++ b/src/nspawn/nspawn-register.h
@@ -27,5 +27,5 @@
#include "nspawn-mount.h"
-int register_machine(const char *machine_name, pid_t pid, const char *directory, sd_id128_t uuid, int local_ifindex, const char *slice, CustomMount *mounts, unsigned n_mounts, int kill_signal, char **properties, bool keep_unit);
+int register_machine(const char *machine_name, pid_t pid, const char *directory, sd_id128_t uuid, int local_ifindex, const char *slice, CustomMount *mounts, unsigned n_mounts, int kill_signal, char **properties, bool keep_unit, const char *service);
int terminate_machine(pid_t pid);
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index ff12ca6498..4c426e6874 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -178,6 +178,7 @@ static bool arg_unified_cgroup_hierarchy = false;
static SettingsMask arg_settings_mask = 0;
static int arg_settings_trusted = -1;
static char **arg_parameters = NULL;
+static const char *arg_container_service_name = "systemd-nspawn";
static void help(void) {
printf("%s [OPTIONS...] [PATH] [ARGUMENTS...]\n\n"
@@ -387,7 +388,7 @@ static int parse_argv(int argc, char *argv[]) {
};
int c, r;
- const char *p;
+ const char *p, *e;
uint64_t plus = 0, minus = 0;
bool mask_all_settings = false, mask_no_settings = false;
@@ -909,6 +910,10 @@ static int parse_argv(int argc, char *argv[]) {
if (r < 0)
return r;
+ e = getenv("SYSTEMD_NSPAWN_CONTAINER_SERVICE");
+ if (e)
+ arg_container_service_name = e;
+
return 1;
}
@@ -2404,10 +2409,10 @@ static int inner_child(
FDSet *fds) {
_cleanup_free_ char *home = NULL;
- unsigned n_env = 2;
+ unsigned n_env = 1;
const char *envp[] = {
"PATH=" DEFAULT_PATH_SPLIT_USR,
- "container=systemd-nspawn", /* LXC sets container=lxc, so follow the scheme here */
+ NULL, /* container */
NULL, /* TERM */
NULL, /* HOME */
NULL, /* USER */
@@ -2508,6 +2513,9 @@ static int inner_child(
if (r < 0)
return r;
+ /* LXC sets container=lxc, so follow the scheme here */
+ envp[n_env++] = strjoina("container=", arg_container_service_name);
+
envp[n_env] = strv_find_prefix(environ, "TERM=");
if (envp[n_env])
n_env ++;
@@ -3426,7 +3434,8 @@ int main(int argc, char *argv[]) {
arg_custom_mounts, arg_n_custom_mounts,
arg_kill_signal,
arg_property,
- arg_keep_unit);
+ arg_keep_unit,
+ arg_container_service_name);
if (r < 0)
goto finish;
}