| 53 | } |
| 54 | |
| 55 | static int _write_fault(rt_varea_t varea, void *pa, struct rt_aspace_fault_msg *msg) |
| 56 | { |
| 57 | rt_aspace_t aspace = varea->aspace; |
| 58 | int err = MM_FAULT_FIXABLE_FALSE; |
| 59 | |
| 60 | if (rt_varea_is_private_locked(varea)) |
| 61 | { |
| 62 | if (VAREA_IS_WRITABLE(varea) && ( |
| 63 | msg->fault_type == MM_FAULT_TYPE_RWX_PERM || |
| 64 | msg->fault_type == MM_FAULT_TYPE_PAGE_FAULT)) |
| 65 | { |
| 66 | RDWR_LOCK(aspace); |
| 67 | err = rt_varea_fix_private_locked(varea, pa, msg, RT_FALSE); |
| 68 | RDWR_UNLOCK(aspace); |
| 69 | if (err == MM_FAULT_FIXABLE_FALSE) |
| 70 | LOG_I("%s: fix private failure", __func__); |
| 71 | } |
| 72 | else |
| 73 | { |
| 74 | LOG_I("%s: No permission on %s(attr=0x%lx,writable=%s,fault_type=%d)", |
| 75 | __func__, VAREA_NAME(varea), varea->attr, |
| 76 | VAREA_IS_WRITABLE(varea) ? "True" : "False", msg->fault_type); |
| 77 | } |
| 78 | } |
| 79 | else if (msg->fault_type == MM_FAULT_TYPE_PAGE_FAULT) |
| 80 | { |
| 81 | RT_ASSERT(pa == ARCH_MAP_FAILED); |
| 82 | RT_ASSERT(!(varea->flag & MMF_PREFETCH)); |
| 83 | err = _fetch_page(varea, msg); |
| 84 | if (err == MM_FAULT_FIXABLE_FALSE) |
| 85 | LOG_I("%s: page fault failure", __func__); |
| 86 | } |
| 87 | else |
| 88 | { |
| 89 | LOG_D("%s: can not fix", __func__); |
| 90 | /* signal a fault to user? */ |
| 91 | } |
| 92 | return err; |
| 93 | } |
| 94 | |
| 95 | static int _exec_fault(rt_varea_t varea, void *pa, struct rt_aspace_fault_msg *msg) |
| 96 | { |
no test coverage detected