link()

1 files changed, 18 insertions, 1 deletions

diff --git a/syscall.c b/syscall.c
index 48da287..4505c89 100644
--- a/syscall.c
+++ b/syscall.c
@@ -303,7 +303,6 @@ sys_unlink(void)
   return r;
 }
 
-
 int
 sys_fstat(void)
 {
@@ -326,6 +325,21 @@ sys_fstat(void)
 }
 
 int
+sys_link(void)
+{
+  struct proc *cp = curproc[cpu()];
+  uint name1, name2;
+  int r;
+  
+  if(fetcharg(0, &name1) < 0 || checkstring(name1) < 0)
+    return -1;
+  if(fetcharg(1, &name2) < 0 || checkstring(name2) < 0)
+    return -1;
+  r = link(cp->mem + name1, cp->mem + name2);
+  return r;
+}
+
+int
 sys_exec(void)
 {
   struct proc *cp = curproc[cpu()];
@@ -543,6 +557,9 @@ syscall(void)
   case SYS_fstat:
     ret = sys_fstat();
     break;
+  case SYS_link:
+    ret = sys_link();
+    break;
   default:
     cprintf("unknown sys call %d\n", num);
     // XXX fault