/*===========================================================================* * sef_cb_signal_manager * *===========================================================================*/ PRIVATE int sef_cb_signal_manager(endpoint_t target, int signo) { /* Process system signal on behalf of the kernel. */ int target_p; struct rproc *rp; struct rprocpub *rpub; message m; /* Lookup slot. */ if(rs_isokendpt(target, &target_p) != OK || rproc_ptr[target_p] == NULL) { if(rs_verbose) printf("RS: ignoring spurious signal %d for process %d\n", signo, target); return OK; /* clear the signal */ } rp = rproc_ptr[target_p]; rpub = rp->r_pub; /* Don't bother if a termination signal has already been processed. */ if((rp->r_flags & RS_TERMINATED) && !(rp->r_flags & RS_EXITING)) { return EDEADEPT; /* process is gone */ } /* Ignore external signals for inactive service instances. */ if( !(rp->r_flags & RS_ACTIVE) && !(rp->r_flags & RS_EXITING)) { if(rs_verbose) printf("RS: ignoring signal %d for inactive %s\n", signo, srv_to_string(rp)); return OK; /* clear the signal */ } if(rs_verbose) printf("RS: %s got %s signal %d\n", srv_to_string(rp), SIGS_IS_TERMINATION(signo) ? "termination" : "non-termination",signo); /* Print stacktrace if necessary. */ if(SIGS_IS_STACKTRACE(signo)) { sys_sysctl_stacktrace(target); } /* In case of termination signal handle the event. */ if(SIGS_IS_TERMINATION(signo)) { rp->r_flags |= RS_TERMINATED; terminate_service(rp); return EDEADEPT; /* process is now gone */ } /* Translate every non-termination signal into a message. */ m.m_type = SIGS_SIGNAL_RECEIVED; m.SIGS_SIG_NUM = signo; asynsend3(rpub->endpoint, &m, AMF_NOREPLY); return OK; /* signal has been delivered */ }
/*===========================================================================* * do_munmap * *===========================================================================*/ int do_munmap(message *m) { int r, n; struct vmproc *vmp; vir_bytes addr, len; endpoint_t target = SELF; if(m->m_type == VM_UNMAP_PHYS) { target = m->VMUP_EP; } else if(m->m_type == VM_SHM_UNMAP) { target = m->VMUN_ENDPT; } if(target == SELF) target = m->m_source; if((r=vm_isokendpt(target, &n)) != OK) { panic("do_mmap: message from strange source: %d", m->m_source); } vmp = &vmproc[n]; if(m->m_type == VM_UNMAP_PHYS) { addr = (vir_bytes) m->VMUP_VADDR; } else if(m->m_type == VM_SHM_UNMAP) { addr = (vir_bytes) m->VMUN_ADDR; } else addr = (vir_bytes) m->VMUM_ADDR; if(addr % VM_PAGE_SIZE) return EFAULT; if(m->m_type == VM_UNMAP_PHYS || m->m_type == VM_SHM_UNMAP) { struct vir_region *vr; if(!(vr = map_lookup(vmp, addr, NULL))) { printf("VM: unmap: address 0x%lx not found in %d\n", addr, target); sys_sysctl_stacktrace(target); return EFAULT; } len = vr->length; } else len = roundup(m->VMUM_LEN, VM_PAGE_SIZE); return map_unmap_range(vmp, addr, len); }