1 files changed, 19 insertions, 0 deletions
diff --git a/kernel/proc.c b/kernel/proc.c
index 3d215a5..9a9bae9 100644
--- a/kernel/proc.c
+++ b/kernel/proc.c
@@ -39,6 +39,7 @@ proc_mapstacks(pagetable_t kpgtbl)
     if(pa == 0)
       panic("kalloc");
     uint64 va = KSTACK((int) (p - proc));
+  p->alarm_tickspassed = 0;
     kvmmap(kpgtbl, va, (uint64)pa, PGSIZE, PTE_R | PTE_W);
   }
 }
@@ -140,6 +141,17 @@ found:
   }
   p->usyscall->pid = p->pid;
 
+  // reset sigalarm props 
+  p->alarm_interval = 0;
+  p->alarm_handler = 0;
+  p->alarm_tickspassed = 0;
+  p->alarm_caninvoke = 1;
+  if((p->atpfm = (struct trapframe *)kalloc()) == 0){
+    freeproc(p);
+    release(&p->lock);
+    return 0;
+  }
+
   // An empty user page table.
   p->pagetable = proc_pagetable(p);
   if(p->pagetable == 0){
@@ -171,6 +183,13 @@ freeproc(struct proc *p)
   p->usyscall = 0;
   if(p->pagetable)
     proc_freepagetable(p->pagetable, p->sz);
+  if(p->atpfm)
+    kfree((void*)p->atpfm);
+  p->atpfm = 0;
+  p->alarm_interval = 0;
+  p->alarm_handler = 0;
+  p->alarm_tickspassed = 0;
+  p->alarm_caninvoke = 1;
   p->pagetable = 0;
   p->sz = 0;
   p->pid = 0;