Fix the rt_sigaction call.

sizeof(sigset_t) is something ludicrous like 0x80 in userspace. Just hard-code it at 8, since all the userspace definitions seem to be lies.
nelhage · Jan 18, 2011 · cdc7f64 · cdc7f64
1 parent b3eb80f
commit cdc7f64
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/attach.c b/attach.c
@@ -225,9 +225,11 @@ int attach_child(pid_t pid, const char *pty) {
                                      &act, sizeof act);
         if (err < 0)
             goto out_kill;
-        ptrace_remote_syscall(&child, __NR_rt_sigaction,
-                              SIGHUP, scratch_page,
-                              0, sizeof(sigset_t), 0, 0);
+        err = ptrace_remote_syscall(&child, __NR_rt_sigaction,
+                                    SIGHUP, scratch_page,
+                                    0, 8, 0, 0);
+        if (err < 0)
+            goto out_kill;
 
     }
 #endif