include/linux/cnum.h

Source file repositories/reference/linux-study-clean/include/linux/cnum.h

File Facts

System
Linux kernel
Corpus path
include/linux/cnum.h
Extension
.h
Size
3395 bytes
Lines
83
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct cnum32 {
	u32 base;
	u32 size;
};

#define CNUM32_UNBOUNDED ((struct cnum32){ .base = 0, .size = U32_MAX })
#define CNUM32_EMPTY ((struct cnum32){ .base = U32_MAX, .size = U32_MAX })

struct cnum32 cnum32_from_urange(u32 min, u32 max);
struct cnum32 cnum32_from_srange(s32 min, s32 max);
u32 cnum32_umin(struct cnum32 cnum);
u32 cnum32_umax(struct cnum32 cnum);
s32 cnum32_smin(struct cnum32 cnum);
s32 cnum32_smax(struct cnum32 cnum);
struct cnum32 cnum32_intersect(struct cnum32 a, struct cnum32 b);
void cnum32_intersect_with(struct cnum32 *dst, struct cnum32 src);
void cnum32_intersect_with_urange(struct cnum32 *dst, u32 min, u32 max);
void cnum32_intersect_with_srange(struct cnum32 *dst, s32 min, s32 max);
bool cnum32_contains(struct cnum32 cnum, u32 v);
bool cnum32_is_const(struct cnum32 cnum);
bool cnum32_is_empty(struct cnum32 cnum);
struct cnum32 cnum32_add(struct cnum32 a, struct cnum32 b);
struct cnum32 cnum32_negate(struct cnum32 a);
bool cnum32_is_subset(struct cnum32 outer, struct cnum32 inner);

/* Same as cnum32 but for 64-bit ranges */
struct cnum64 {
	u64 base;
	u64 size;
};

#define CNUM64_UNBOUNDED ((struct cnum64){ .base = 0, .size = U64_MAX })
#define CNUM64_EMPTY ((struct cnum64){ .base = U64_MAX, .size = U64_MAX })

struct cnum64 cnum64_from_urange(u64 min, u64 max);
struct cnum64 cnum64_from_srange(s64 min, s64 max);
u64 cnum64_umin(struct cnum64 cnum);
u64 cnum64_umax(struct cnum64 cnum);
s64 cnum64_smin(struct cnum64 cnum);
s64 cnum64_smax(struct cnum64 cnum);
struct cnum64 cnum64_intersect(struct cnum64 a, struct cnum64 b);
void cnum64_intersect_with(struct cnum64 *dst, struct cnum64 src);
void cnum64_intersect_with_urange(struct cnum64 *dst, u64 min, u64 max);
void cnum64_intersect_with_srange(struct cnum64 *dst, s64 min, s64 max);
bool cnum64_contains(struct cnum64 cnum, u64 v);
bool cnum64_is_const(struct cnum64 cnum);
bool cnum64_is_empty(struct cnum64 cnum);
struct cnum64 cnum64_add(struct cnum64 a, struct cnum64 b);
struct cnum64 cnum64_negate(struct cnum64 a);
bool cnum64_is_subset(struct cnum64 outer, struct cnum64 inner);

struct cnum32 cnum32_from_cnum64(struct cnum64 cnum);
struct cnum64 cnum64_cnum32_intersect(struct cnum64 a, struct cnum32 b);

#endif /* _LINUX_CNUM_H */

Annotation

Implementation Notes