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Diffstat (limited to 'src/systemctl/systemctl.c')
-rw-r--r--src/systemctl/systemctl.c35
1 files changed, 24 insertions, 11 deletions
diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
index f3952653e1..17ad7f0462 100644
--- a/src/systemctl/systemctl.c
+++ b/src/systemctl/systemctl.c
@@ -4282,8 +4282,8 @@ static int show_environment(sd_bus *bus, char **args) {
static int switch_root(sd_bus *bus, char **args) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- _cleanup_free_ char *init = NULL;
- const char *root;
+ _cleanup_free_ char *cmdline_init = NULL;
+ const char *root, *init;
unsigned l;
int r;
@@ -4296,20 +4296,33 @@ static int switch_root(sd_bus *bus, char **args) {
root = args[1];
if (l >= 3)
- init = strdup(args[2]);
+ init = args[2];
else {
- parse_env_file("/proc/cmdline", WHITESPACE,
- "init", &init,
- NULL);
+ r = parse_env_file("/proc/cmdline", WHITESPACE,
+ "init", &cmdline_init,
+ NULL);
+ if (r < 0)
+ log_debug("Failed to parse /proc/cmdline: %s", strerror(-r));
- if (!init)
- init = strdup("");
+ init = cmdline_init;
}
- if (!init)
- return log_oom();
+ if (isempty(init))
+ init = NULL;
+
+ if (init) {
+ const char *root_systemd_path = NULL, *root_init_path = NULL;
+
+ root_systemd_path = strappenda(root, "/" SYSTEMD_BINARY_PATH);
+ root_init_path = strappenda3(root, "/", init);
+
+ /* If the passed init is actually the same as the
+ * systemd binary, then let's suppress it. */
+ if (files_same(root_init_path, root_systemd_path) > 0)
+ init = NULL;
+ }
- log_debug("switching root - root: %s; init: %s", root, init);
+ log_debug("Switching root - root: %s; init: %s", root, strna(init));
r = sd_bus_call_method(
bus,