diff options
Diffstat (limited to 'security/landlock/ruleset.h')
| -rw-r--r-- | security/landlock/ruleset.h | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/security/landlock/ruleset.h b/security/landlock/ruleset.h index 8c99c323b06c..6e2ad1546ab3 100644 --- a/security/landlock/ruleset.h +++ b/security/landlock/ruleset.h @@ -15,10 +15,21 @@ #include <linux/rbtree.h> #include <linux/refcount.h> #include <linux/workqueue.h> +#include <uapi/linux/landlock.h> #include "limits.h" #include "object.h" +/* + * All access rights that are denied by default whether they are handled or not + * by a ruleset/layer. This must be ORed with all ruleset->access_masks[] + * entries when we need to get the absolute handled access masks. + */ +/* clang-format off */ +#define LANDLOCK_ACCESS_FS_INITIALLY_DENIED ( \ + LANDLOCK_ACCESS_FS_REFER) +/* clang-format on */ + typedef u16 access_mask_t; /* Makes sure all filesystem access rights can be stored. */ static_assert(BITS_PER_TYPE(access_mask_t) >= LANDLOCK_NUM_ACCESS_FS); @@ -196,12 +207,21 @@ landlock_add_fs_access_mask(struct landlock_ruleset *const ruleset, } static inline access_mask_t -landlock_get_fs_access_mask(const struct landlock_ruleset *const ruleset, - const u16 layer_level) +landlock_get_raw_fs_access_mask(const struct landlock_ruleset *const ruleset, + const u16 layer_level) { return (ruleset->access_masks[layer_level] >> LANDLOCK_SHIFT_ACCESS_FS) & LANDLOCK_MASK_ACCESS_FS; } +static inline access_mask_t +landlock_get_fs_access_mask(const struct landlock_ruleset *const ruleset, + const u16 layer_level) +{ + /* Handles all initially denied by default access rights. */ + return landlock_get_raw_fs_access_mask(ruleset, layer_level) | + LANDLOCK_ACCESS_FS_INITIALLY_DENIED; +} + #endif /* _SECURITY_LANDLOCK_RULESET_H */ |