* process.c (rb_f_system): add security check. [ruby-talk:202947]

* process.c (rb_f_system): move signal right before fork to avoid
  signal handler intervention.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10592 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 1 deletions

diff --git a/process.c b/process.c
index 4271c2ff1b..76720977c8 100644
--- a/process.c
+++ b/process.c
@@ -1494,7 +1494,6 @@ rb_f_system(argc, argv)
     int i;
     RETSIGTYPE (*chfunc)(int);
 
-    chfunc = signal(SIGCHLD, SIG_DFL);
     fflush(stdout);
     fflush(stderr);
     if (argc == 0) {
@@ -1516,6 +1515,8 @@ rb_f_system(argc, argv)
     for (i = 0; i < argc; i++) {
 	SafeStringValue(argv[i]);
     }
+    security(RSTRING(prog ? prog : argv[0])->ptr);
+    chfunc = signal(SIGCHLD, SIG_DFL);
   retry:
     pid = fork();
     if (pid == 0) {