diff --git a/doc/lxc-start.sgml.in b/doc/lxc-start.sgml.in
index 950cc243b..1770ac2ce 100644
--- a/doc/lxc-start.sgml.in
+++ b/doc/lxc-start.sgml.in
@@ -80,7 +80,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
If no command is specified, lxc-start will
- use the default
+ use the command defined in lxc.init_cmd or if not set, the default
"/sbin/init" command to run a system
container.
diff --git a/doc/lxc.container.conf.sgml.in b/doc/lxc.container.conf.sgml.in
index 35907b502..6d4daac07 100644
--- a/doc/lxc.container.conf.sgml.in
+++ b/doc/lxc.container.conf.sgml.in
@@ -201,6 +201,29 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+ Init command
+
+ Sets the command to use as the init system for the containers.
+
+ This option is ignored when using lxc-execute.
+
+ Defaults to: /sbin/init
+
+
+
+
+
+
+
+
+ Absolute path from container rootfs to the binary to use as init.
+
+
+
+
+
+
Network
diff --git a/doc/lxc.sgml.in b/doc/lxc.sgml.in
index 1bafaf27c..c522e2b5c 100644
--- a/doc/lxc.sgml.in
+++ b/doc/lxc.sgml.in
@@ -376,7 +376,8 @@ rootfs
command into the container.
The pid of the first process is 1. If no command is
specified lxc-start will
- run /sbin/init.
+ run the command defined in lxc.init_cmd or if not set,
+ /sbin/init .
diff --git a/src/lxc/conf.c b/src/lxc/conf.c
index ac21c7713..90df4d256 100644
--- a/src/lxc/conf.c
+++ b/src/lxc/conf.c
@@ -4537,6 +4537,8 @@ void lxc_conf_free(struct lxc_conf *conf)
free(conf->fstab);
if (conf->rcfile)
free(conf->rcfile);
+ if (conf->init_cmd)
+ free(conf->init_cmd);
free(conf->unexpanded_config);
lxc_clear_config_network(conf);
if (conf->lsm_aa_profile)
diff --git a/src/lxc/conf.h b/src/lxc/conf.h
index 563109c5e..06d3e234d 100644
--- a/src/lxc/conf.h
+++ b/src/lxc/conf.h
@@ -356,6 +356,9 @@ struct lxc_conf {
/* text representation of the config file */
char *unexpanded_config;
size_t unexpanded_len, unexpanded_alloced;
+
+ /* init command */
+ char *init_cmd;
};
int run_lxc_hooks(const char *name, char *hook, struct lxc_conf *conf,
diff --git a/src/lxc/confile.c b/src/lxc/confile.c
index 886f8a113..83dab05ca 100644
--- a/src/lxc/confile.c
+++ b/src/lxc/confile.c
@@ -101,6 +101,7 @@ static int config_stopsignal(const char *, const char *, struct lxc_conf *);
static int config_start(const char *, const char *, struct lxc_conf *);
static int config_group(const char *, const char *, struct lxc_conf *);
static int config_environment(const char *, const char *, struct lxc_conf *);
+static int config_init_cmd(const char *, const char *, struct lxc_conf *);
static struct lxc_config_t config[] = {
@@ -162,6 +163,7 @@ static struct lxc_config_t config[] = {
{ "lxc.start.order", config_start },
{ "lxc.group", config_group },
{ "lxc.environment", config_environment },
+ { "lxc.init_cmd", config_init_cmd },
};
struct signame {
@@ -965,6 +967,12 @@ static int config_seccomp(const char *key, const char *value,
return config_path_item(&lxc_conf->seccomp, value);
}
+static int config_init_cmd(const char *key, const char *value,
+ struct lxc_conf *lxc_conf)
+{
+ return config_path_item(&lxc_conf->init_cmd, value);
+}
+
static int config_hook(const char *key, const char *value,
struct lxc_conf *lxc_conf)
{
@@ -2327,6 +2335,8 @@ int lxc_get_config_item(struct lxc_conf *c, const char *key, char *retv,
v = c->seccomp;
else if (strcmp(key, "lxc.environment") == 0)
return lxc_get_item_environment(c, retv, inlen);
+ else if (strcmp(key, "lxc.init_cmd") == 0)
+ v = c->init_cmd;
else return -1;
if (!v)
diff --git a/src/lxc/lxc_autostart.c b/src/lxc/lxc_autostart.c
index d0e3bfa31..db25b4871 100644
--- a/src/lxc/lxc_autostart.c
+++ b/src/lxc/lxc_autostart.c
@@ -330,10 +330,6 @@ int main(int argc, char *argv[])
struct lxc_container **containers = NULL;
struct lxc_list **c_groups_lists = NULL;
struct lxc_list *cmd_group;
- char *const default_start_args[] = {
- "/sbin/init",
- NULL,
- };
if (lxc_arguments_parse(&my_args, argc, argv))
return 1;
@@ -470,7 +466,7 @@ int main(int argc, char *argv[])
printf("%s %d\n", c->name,
get_config_integer(c, "lxc.start.delay"));
else {
- if (!c->start(c, 0, default_start_args))
+ if (!c->start(c, 0, NULL))
fprintf(stderr, "Error starting container: %s\n", c->name);
else
sleep(get_config_integer(c, "lxc.start.delay"));
diff --git a/src/lxc/lxc_start.c b/src/lxc/lxc_start.c
index 874bb9e4d..006ffc42a 100644
--- a/src/lxc/lxc_start.c
+++ b/src/lxc/lxc_start.c
@@ -336,7 +336,10 @@ int main(int argc, char *argv[])
if (my_args.close_all_fds)
c->want_close_all_fds(c, true);
- err = c->start(c, 0, args) ? 0 : 1;
+ if (args == default_args)
+ err = c->start(c, 0, NULL) ? 0 : 1;
+ else
+ err = c->start(c, 0, args) ? 0 : 1;
if (err) {
ERROR("The container failed to start.");
diff --git a/src/lxc/lxccontainer.c b/src/lxc/lxccontainer.c
index 2372b197f..406cead15 100644
--- a/src/lxc/lxccontainer.c
+++ b/src/lxc/lxccontainer.c
@@ -555,6 +555,7 @@ static bool lxcapi_start(struct lxc_container *c, int useinit, char * const argv
"/sbin/init",
NULL,
};
+ char *init_cmd[2];
/* container exists */
if (!c)
@@ -591,8 +592,15 @@ static bool lxcapi_start(struct lxc_container *c, int useinit, char * const argv
return ret == 0 ? true : false;
}
- if (!argv)
- argv = default_args;
+ if (!argv) {
+ if (conf->init_cmd) {
+ init_cmd[0] = conf->init_cmd;
+ init_cmd[1] = NULL;
+ argv = init_cmd;
+ }
+ else
+ argv = default_args;
+ }
/*
* say, I'm not sure - what locks do we want here? Any?