security/lockdown/lockdown.c

1 // SPDX-License-Identifier: GPL-2.0
7  * This program is free software; you can redistribute it and/or
9  * as published by the Free Software Foundation; either version
25  * Put the kernel into lock-down mode.
30 		return -EPERM;  in lock_kernel_down()
33 	pr_notice("Kernel is locked down from %s; see man kernel_lockdown.7\n",  in lock_kernel_down()
41 		return -EINVAL;  in lockdown_param()
48 		return -EINVAL;  in lockdown_param()
56  * lockdown_is_locked_down - Find out if the kernel is locked down
63 		return -EPERM;  in lockdown_is_locked_down()
68 				  current->comm, lockdown_reasons[what]);  in lockdown_is_locked_down()
69 		return -EPERM;  in lockdown_is_locked_down()
117 		temp[offset-1] = '\n';  in lockdown_read()
126 	int i, len, err = -EINVAL;  in lockdown_write()
133 	if (len && state[len-1] == '\n') {  in lockdown_write()
134 		state[len-1] = '\0';  in lockdown_write()
135 		len--;  in lockdown_write()