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-rw-r--r--init/Kconfig16
-rw-r--r--init/main.c7
2 files changed, 22 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 7e9fbd48e2ab..9afb971497f4 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1280,6 +1280,22 @@ source "usr/Kconfig"
endif
+config INIT_FALLBACK
+ bool "Fall back to defaults if init= parameter is bad"
+ default y
+ help
+ If enabled, the kernel will try the default init binaries if an
+ explicit request from the init= parameter fails.
+
+ This can have unexpected effects. For example, booting
+ with init=/sbin/kiosk_app will run /sbin/init or even /bin/sh
+ if /sbin/kiosk_app cannot be executed.
+
+ The default value of Y is consistent with historical behavior.
+ Selecting N is likely to be more appropriate for most uses,
+ especially on kiosks and on kernels that are intended to be
+ run under the control of a script.
+
config CC_OPTIMIZE_FOR_SIZE
bool "Optimize for size"
help
diff --git a/init/main.c b/init/main.c
index d2e4ead4891f..ca380ec685de 100644
--- a/init/main.c
+++ b/init/main.c
@@ -952,8 +952,13 @@ static int __ref kernel_init(void *unused)
ret = run_init_process(execute_command);
if (!ret)
return 0;
+#ifndef CONFIG_INIT_FALLBACK
+ panic("Requested init %s failed (error %d).",
+ execute_command, ret);
+#else
pr_err("Failed to execute %s (error %d). Attempting defaults...\n",
- execute_command, ret);
+ execute_command, ret);
+#endif
}
if (!try_to_run_init_process("/sbin/init") ||
!try_to_run_init_process("/etc/init") ||