Updated vsyssh to run as a standalone shell.

diff --git a/vsyssh/vsyssh.c b/vsyssh/vsyssh.c
index b0377ca..7ae4deb 100644 (file)
--- a/vsyssh/vsyssh.c
+++ b/vsyssh/vsyssh.c
@@ -12,6 +12,7 @@
 #include <sys/syscall.h>
 #include <sys/wait.h>
 #include <sys/time.h>
+#include <sys/select.h>
 #include <sys/resource.h>
 #include <sys/mount.h>
 #include <sys/vfs.h>
@@ -23,7 +24,7 @@
 
 int main(int argc, char **argv, char **envp)
 {
-       if (argc<3) {
+       if (argc<2) {
                printf("Usage: vsyssh <vsys entry> <cmd>\n");
                exit(1);
        }
@@ -45,13 +46,40 @@ int main(int argc, char **argv, char **envp)
                        exit(1);
                }
 
-               close(0);
-               close(1);
+               
+               if (argc<3) {
+                       fd_set set;
+                       FD_ZERO(&set);
+                       FD_SET(0,&set);
+                       FD_SET(vfd0,&set);
+                       while (1) {
+                               int ret;
+                               ret = select(2, &set, NULL, NULL, NULL);
+                               if (FD_ISSET(0,&set)) {
+                                       char lineread[2048];
+                                       int ret;
+                                       ret=read(0,lineread,2048);
+                                       write(vfd1,lineread,ret);
+                                       FD_CLR(0,&set);
+                               }
+                               else if (FD_ISSET(vfd0,&set)) {
+                                       char lineread[2048];
+                                       int ret;
+                                       ret=read(vfd0,lineread,2048);
+                                       write(1,lineread,ret);
+                                       FD_CLR(vfd0,&set);
+                               }
+                       }
 
-               dup2(vfd0,0);
-               dup2(vfd1,1);
+               }
+               else {
+                       close(0);
+                       close(1);
 
-               execve(argv[3],argv+3,envp);
+                       dup2(vfd0,0);
+                       dup2(vfd1,1);
+                       execve(argv[3],argv+3,envp);
+               }
        }
 
        return;