From: Rob Landley <r...@landley.net> Make initramfs honor CONFIG_DEVTMPFS_MOUNT, and move /dev/console open after devtmpfs mount.
Signed-off-by: Rob Landley <r...@landley.net> --- init/main.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/init/main.c b/init/main.c index 2858be7..71ed0d7 100644 --- a/init/main.c +++ b/init/main.c @@ -1016,12 +1016,6 @@ static noinline void __init kernel_init_freeable(void) do_basic_setup(); - /* Open the /dev/console on the rootfs, this should never fail */ - if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0) - pr_err("Warning: unable to open an initial console.\n"); - - (void) sys_dup(0); - (void) sys_dup(0); /* * check if there is an early userspace init. If yes, let it do all * the work @@ -1033,8 +1027,17 @@ static noinline void __init kernel_init_freeable(void) if (sys_access((const char __user *) ramdisk_execute_command, 0) != 0) { ramdisk_execute_command = NULL; prepare_namespace(); + } else if (IS_ENABLED(CONFIG_DEVTMPFS_MOUNT)) { + sys_mkdir("/dev", 0755); + sys_mount("dev", "dev", "devtmpfs", MS_SILENT, NULL); } + /* Open the /dev/console on the rootfs, this should never fail */ + if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0) + pr_err("Warning: unable to open an initial console.\n"); + (void) sys_dup(0); + (void) sys_dup(0); + /* * Ok, we have completed the initial bootup, and * we're essentially up and running. Get rid of the