a04a119808
Create a system call lsm_get_self_attr() to provide the security
module maintained attributes of the current process.
Create a system call lsm_set_self_attr() to set a security
module maintained attribute of the current process.
Historically these attributes have been exposed to user space via
entries in procfs under /proc/self/attr.
The attribute value is provided in a lsm_ctx structure. The structure
identifies the size of the attribute, and the attribute value. The format
of the attribute value is defined by the security module. A flags field
is included for LSM specific information. It is currently unused and must
be 0. The total size of the data, including the lsm_ctx structure and any
padding, is maintained as well.
struct lsm_ctx {
__u64 id;
__u64 flags;
__u64 len;
__u64 ctx_len;
__u8 ctx[];
};
Two new LSM hooks are used to interface with the LSMs.
security_getselfattr() collects the lsm_ctx values from the
LSMs that support the hook, accounting for space requirements.
security_setselfattr() identifies which LSM the attribute is
intended for and passes it along.
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Serge Hallyn <serge@hallyn.com>
Reviewed-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
30 lines
936 B
Makefile
30 lines
936 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the kernel security code
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#
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obj-$(CONFIG_KEYS) += keys/
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# always enable default capabilities
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obj-y += commoncap.o
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obj-$(CONFIG_SECURITY) += lsm_syscalls.o
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obj-$(CONFIG_MMU) += min_addr.o
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# Object file lists
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obj-$(CONFIG_SECURITY) += security.o
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obj-$(CONFIG_SECURITYFS) += inode.o
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obj-$(CONFIG_SECURITY_SELINUX) += selinux/
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obj-$(CONFIG_SECURITY_SMACK) += smack/
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obj-$(CONFIG_SECURITY) += lsm_audit.o
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obj-$(CONFIG_SECURITY_TOMOYO) += tomoyo/
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obj-$(CONFIG_SECURITY_APPARMOR) += apparmor/
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obj-$(CONFIG_SECURITY_YAMA) += yama/
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obj-$(CONFIG_SECURITY_LOADPIN) += loadpin/
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obj-$(CONFIG_SECURITY_SAFESETID) += safesetid/
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obj-$(CONFIG_SECURITY_LOCKDOWN_LSM) += lockdown/
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obj-$(CONFIG_CGROUPS) += device_cgroup.o
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obj-$(CONFIG_BPF_LSM) += bpf/
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obj-$(CONFIG_SECURITY_LANDLOCK) += landlock/
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# Object integrity file lists
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obj-$(CONFIG_INTEGRITY) += integrity/
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