diff options
Diffstat (limited to 'src/commonlib')
| -rw-r--r-- | src/commonlib/include/commonlib/region.h | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/src/commonlib/include/commonlib/region.h b/src/commonlib/include/commonlib/region.h index 25efcc8724..45a3b8d7b7 100644 --- a/src/commonlib/include/commonlib/region.h +++ b/src/commonlib/include/commonlib/region.h @@ -6,6 +6,7 @@ #include <sys/types.h> #include <stddef.h> #include <stdbool.h> +#include <commonlib/bsd/cb_err.h> #include <commonlib/bsd/helpers.h> #include <commonlib/mem_pool.h> @@ -94,10 +95,20 @@ struct region_device { }, \ } -/* Helper to dynamically initialize region device. */ -void region_device_init(struct region_device *rdev, - const struct region_device_ops *ops, size_t offset, - size_t size); +static inline struct region region_create(size_t offset, size_t size) +{ + assert(offset + size - 1 >= offset); + return (struct region){ .offset = offset, .size = size }; +} + +static inline enum cb_err region_create_untrusted( + struct region *r, unsigned long long offset, unsigned long long size) +{ + if (offset > SIZE_MAX || size > SIZE_MAX || (size_t)(offset + size - 1) < offset) + return CB_ERR_ARG; + *r = (struct region){ .offset = offset, .size = size }; + return CB_SUCCESS; +} /* Return 1 if child is subregion of parent, else 0. */ int region_is_subregion(const struct region *p, const struct region *c); @@ -123,6 +134,11 @@ static inline bool region_overlap(const struct region *r1, const struct region * (region_offset(r1) < region_end(r2)); } +/* Helper to dynamically initialize region device. */ +void region_device_init(struct region_device *rdev, + const struct region_device_ops *ops, size_t offset, + size_t size); + static inline const struct region *region_device_region( const struct region_device *rdev) { |