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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /security/selinux/ss/constraint.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | security/selinux/ss/constraint.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/security/selinux/ss/constraint.h b/security/selinux/ss/constraint.h new file mode 100644 index 000000000..4e563be9e --- /dev/null +++ b/security/selinux/ss/constraint.h @@ -0,0 +1,63 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * A constraint is a condition that must be satisfied in + * order for one or more permissions to be granted. + * Constraints are used to impose additional restrictions + * beyond the type-based rules in `te' or the role-based + * transition rules in `rbac'. Constraints are typically + * used to prevent a process from transitioning to a new user + * identity or role unless it is in a privileged type. + * Constraints are likewise typically used to prevent a + * process from labeling an object with a different user + * identity. + * + * Author : Stephen Smalley, <sds@tycho.nsa.gov> + */ +#ifndef _SS_CONSTRAINT_H_ +#define _SS_CONSTRAINT_H_ + +#include "ebitmap.h" + +#define CEXPR_MAXDEPTH 5 + +struct constraint_expr { +#define CEXPR_NOT 1 /* not expr */ +#define CEXPR_AND 2 /* expr and expr */ +#define CEXPR_OR 3 /* expr or expr */ +#define CEXPR_ATTR 4 /* attr op attr */ +#define CEXPR_NAMES 5 /* attr op names */ + u32 expr_type; /* expression type */ + +#define CEXPR_USER 1 /* user */ +#define CEXPR_ROLE 2 /* role */ +#define CEXPR_TYPE 4 /* type */ +#define CEXPR_TARGET 8 /* target if set, source otherwise */ +#define CEXPR_XTARGET 16 /* special 3rd target for validatetrans rule */ +#define CEXPR_L1L2 32 /* low level 1 vs. low level 2 */ +#define CEXPR_L1H2 64 /* low level 1 vs. high level 2 */ +#define CEXPR_H1L2 128 /* high level 1 vs. low level 2 */ +#define CEXPR_H1H2 256 /* high level 1 vs. high level 2 */ +#define CEXPR_L1H1 512 /* low level 1 vs. high level 1 */ +#define CEXPR_L2H2 1024 /* low level 2 vs. high level 2 */ + u32 attr; /* attribute */ + +#define CEXPR_EQ 1 /* == or eq */ +#define CEXPR_NEQ 2 /* != */ +#define CEXPR_DOM 3 /* dom */ +#define CEXPR_DOMBY 4 /* domby */ +#define CEXPR_INCOMP 5 /* incomp */ + u32 op; /* operator */ + + struct ebitmap names; /* names */ + struct type_set *type_names; + + struct constraint_expr *next; /* next expression */ +}; + +struct constraint_node { + u32 permissions; /* constrained permissions */ + struct constraint_expr *expr; /* constraint on permissions */ + struct constraint_node *next; /* next constraint */ +}; + +#endif /* _SS_CONSTRAINT_H_ */ |