| /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, |