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Capability manipulation syscalls

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Support for capability replicate, share, grant, deduce, and split.
The code builds, but hasn't been tested.
This commit is contained in:
Bahadir Balban
2009-11-07 15:29:52 +02:00
parent f7565118f1
commit 3728e7ef1e
8 changed files with 562 additions and 164 deletions
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25
include/l4/api/capability.h
View File

@@ -7,18 +7,21 @@
#define __API_CAPABILITY_H__
/* Capability syscall request types */
#define CAP_CONTROL_NCAPS 0x00
#define CAP_CONTROL_READ 0x01
#define CAP_CONTROL_SHARE 0x02
#define CAP_CONTROL_GRANT 0x03
#define CAP_CONTROL_MODIFY 0x05
#define CAP_CONTROL_NCAPS 0x00000000
#define CAP_CONTROL_READ 0x00000001
#define CAP_CONTROL_SHARE 0x00000002
#define CAP_CONTROL_GRANT 0x00000003
#define CAP_CONTROL_REPLICATE 0x00000005
#define CAP_CONTROL_SPLIT 0x00000006
#define CAP_CONTROL_DEDUCE 0x00000007
#define CAP_SHARE_MASK 0x1F
#define CAP_SHARE_SPACE 0x01
#define CAP_SHARE_CONTAINER 0x02
#define CAP_SHARE_GROUP 0x04
#define CAP_SHARE_CHILD 0x08 /* All that we are pager of */
#define CAP_SHARE_SIBLING 0x10 /* All that have a common pager */
#define CAP_SHARE_MASK 0x00000003
#define CAP_SHARE_SINGLE 0x00000001
#define CAP_SHARE_ALL 0x00000002
#define CAP_GRANT_MASK 0x00000003
#define CAP_GRANT_SINGLE 0x00000001
#define CAP_GRANT_ALL 0x00000002
/* Task's primary capability list */
#define TASK_CAP_LIST(task) \

3
include/l4/api/syscall.h
View File

@@ -42,7 +42,8 @@ int sys_ipc_control(void);
int sys_map(unsigned long phys, unsigned long virt, unsigned long npages,
unsigned int flags, l4id_t tid);
int sys_getid(struct task_ids *ids);
int sys_capability_control(unsigned int req, unsigned int flags, void *addr);
int sys_capability_control(unsigned int req, unsigned int flags,
l4id_t capid, l4id_t target, void *addr);
int sys_container_control(unsigned int req, unsigned int flags, void *addr);
int sys_time(struct timeval *tv, int set);
int sys_mutex_control(unsigned long mutex_address, int mutex_op);

29
include/l4/generic/cap-types.h
View File

@@ -26,23 +26,29 @@
*/
#define CAP_RTYPE_MASK 0xFFFF0000
#define CAP_RTYPE_THREAD (1 << 16)
#define CAP_RTYPE_TGROUP (1 << 17)
#define CAP_RTYPE_SPACE (1 << 18)
#define CAP_RTYPE_CONTAINER (1 << 19)
#define CAP_RTYPE_PGGROUP (1 << 20) /* Group of paged threads */
#define CAP_RTYPE_CPUPOOL (1 << 21)
#define CAP_RTYPE_THREADPOOL (1 << 22)
#define CAP_RTYPE_SPACEPOOL (1 << 23)
#define CAP_RTYPE_MUTEXPOOL (1 << 24)
#define CAP_RTYPE_MAPPOOL (1 << 25) /* For pmd spending */
#define CAP_RTYPE_CAPPOOL (1 << 26) /* For new cap generation */
#define CAP_RTYPE_SPACE (1 << 17)
#define CAP_RTYPE_CONTAINER (1 << 18)
#define CAP_RTYPE_CPUPOOL (1 << 19)
#define CAP_RTYPE_THREADPOOL (1 << 20)
#define CAP_RTYPE_SPACEPOOL (1 << 21)
#define CAP_RTYPE_MUTEXPOOL (1 << 22)
#define CAP_RTYPE_MAPPOOL (1 << 23) /* For pmd spending */
#define CAP_RTYPE_CAPPOOL (1 << 24) /* For new cap generation */
#define cap_rtype(c) ((c)->type & CAP_RTYPE_MASK)
#define cap_set_rtype(c, rtype) \
{(c)->type &= CAP_RTYPE_MASK; \
(c)->type |= CAP_RTYPE_MASK & rtype;}
/*
* Access permissions
*/
/* Generic permissions */
#define CAP_CHANGEABLE (1 << 28) /* Can modify contents */
#define CAP_TRANSFERABLE (1 << 29) /* Can grant or share it */
#define CAP_REPLICABLE (1 << 30) /* Can create copies */
/* Thread control capability */
#define CAP_TCTRL_CREATE (1 << 0)
#define CAP_TCTRL_DESTROY (1 << 1)
@@ -96,5 +102,8 @@
#define CAP_CAP_GRANT (1 << 1)
#define CAP_CAP_READ (1 << 2)
#define CAP_CAP_SHARE (1 << 3)
#define CAP_CAP_REPLICATE (1 << 4)
#define CAP_CAP_SPLIT (1 << 5)
#define CAP_CAP_DEDUCE (1 << 6)
#endif /* __CAP_TYPES_H__ */

3
include/l4/generic/capability.h
View File

@@ -66,7 +66,7 @@ struct capability {
/* Capability limits/permissions */
u32 access; /* Permitted operations */
/* Limits on the resource */
/* Limits on the resource (NOTE: must never have signed type) */
unsigned long start; /* Resource start value */
unsigned long end; /* Resource end value */
unsigned long size; /* Resource size */
@@ -139,6 +139,7 @@ struct capability *capability_find_by_rtype(struct ktcb *task,
struct capability *cap_list_find_by_rtype(struct cap_list *clist,
unsigned int rtype);
struct capability *cap_find_byid(l4id_t capid);
/* Capability checking on system calls */
int cap_map_check(struct ktcb *task, unsigned long phys, unsigned long virt,