1 // SPDX-License-Identifier: GPL-2.0-only
3 * System calls implementing the Linux Security Module API.
5 * Copyright (C) 2022 Casey Schaufler <casey@schaufler-ca.com>
6 * Copyright (C) 2022 Intel Corporation
9 #include <asm/current.h>
10 #include <linux/compiler_types.h>
11 #include <linux/err.h>
12 #include <linux/errno.h>
13 #include <linux/security.h>
14 #include <linux/stddef.h>
15 #include <linux/syscalls.h>
16 #include <linux/types.h>
17 #include <linux/lsm_hooks.h>
18 #include <uapi/linux/lsm.h>
21 * sys_lsm_set_self_attr - Set current task's security module attribute
22 * @attr: which attribute to set
23 * @ctx: the LSM contexts
25 * @flags: reserved for future use
27 * Sets the calling task's LSM context. On success this function
28 * returns 0. If the attribute specified cannot be set a negative
29 * value indicating the reason for the error is returned.
31 SYSCALL_DEFINE4(lsm_set_self_attr, unsigned int, attr, struct lsm_ctx __user *,
32 ctx, size_t, size, u32, flags)
34 return security_setselfattr(attr, ctx, size, flags);
38 * sys_lsm_get_self_attr - Return current task's security module attributes
39 * @attr: which attribute to return
40 * @ctx: the user-space destination for the information, or NULL
41 * @size: pointer to the size of space available to receive the data
42 * @flags: special handling options. LSM_FLAG_SINGLE indicates that only
43 * attributes associated with the LSM identified in the passed @ctx be
46 * Returns the calling task's LSM contexts. On success this
47 * function returns the number of @ctx array elements. This value
48 * may be zero if there are no LSM contexts assigned. If @size is
49 * insufficient to contain the return data -E2BIG is returned and
50 * @size is set to the minimum required size. In all other cases
51 * a negative value indicating the error is returned.
53 SYSCALL_DEFINE4(lsm_get_self_attr, unsigned int, attr, struct lsm_ctx __user *,
54 ctx, size_t __user *, size, u32, flags)
56 return security_getselfattr(attr, ctx, size, flags);