/kernel/trunk/generic/include/ddi/ddi.h |
---|
39,8 → 39,6 |
/* |
* Interface to be implemented by all architectures. |
*/ |
extern __native ddi_int_control_arch(__native enable, __native *flags); |
extern __native ddi_int_control(__native enable, __native *flags); |
extern int ddi_iospace_enable_arch(task_t *task, __address ioaddr, size_t size); |
#endif |
/kernel/trunk/generic/include/security/cap.h |
---|
63,9 → 63,9 |
#define CAP_IO_MANAGER (1<<2) |
/** |
* CAP_INT_CONTROL allows its holder to disable interrupts |
* CAP_PREEMPT_CONTROL allows its holder to disable interrupts |
*/ |
#define CAP_INT_CONTROL (1<<3) |
#define CAP_PREEMPT_CONTROL (1<<3) |
typedef __u32 cap_t; |
/kernel/trunk/generic/include/syscall/syscall.h |
---|
32,7 → 32,7 |
typedef enum { |
SYS_IO = 0, |
SYS_TLS_SET = 1, /* Hardcoded in AMD64,IA32 uspace - psthread.S */ |
SYS_INT_CONTROL = 2, /* Hardcoded in all SYSCALL handlers */ |
SYS_PREEMPT_CONTROL, |
SYS_THREAD_CREATE, |
SYS_THREAD_EXIT, |
SYS_TASK_GET_ID, |
/kernel/trunk/generic/src/ddi/ddi.c |
---|
203,10 → 203,3 |
copy_from_uspace(&arg, uspace_io_arg, sizeof(ddi_ioarg_t)); |
return (__native) ddi_iospace_enable((task_id_t) arg.task_id, (__address) arg.ioaddr, (size_t) arg.size); |
} |
__native ddi_int_control(__native enable, __native *flags) |
{ |
if (! cap_get(TASK) & CAP_INT_CONTROL) |
return EPERM; |
return ddi_int_control_arch(enable, flags); |
} |
/kernel/trunk/generic/src/syscall/syscall.c |
---|
56,9 → 56,15 |
return count; |
} |
static __native sys_int_control(int enable) |
static __native sys_preempt_control(int enable) |
{ |
panic("Not implemented."); |
if (! cap_get(TASK) & CAP_PREEMPT_CONTROL) |
return EPERM; |
if (enable) |
preemption_enable(); |
else |
preemption_disable(); |
return 0; |
} |
/** Dispatch system call */ |
74,7 → 80,7 |
syshandler_t syscall_table[SYSCALL_END] = { |
sys_io, |
sys_tls_set, |
sys_int_control, |
sys_preempt_control, |
/* Thread and task related syscalls. */ |
sys_thread_create, |