win32: make vfork fail at compile-time

Nothing in busybox-w32 uses fork.  Remove the implementations of fork,
vfork and xvfork so that, for example, enabling cpio pass-through causes
an error at compile-time, not run-time.

MinGW-w64 defines pid_t, so we don't have to.

Ensure code containing xvfork in netcat is disabled when NC_EXTRA
is disabled.  Otherwise removing the implementation of vfork costs
64 bytes.

1 files changed, 3 insertions, 1 deletions

diff --git a/networking/nc.c b/networking/nc.c
index df073d7df..3437c565e 100644
--- a/networking/nc.c
+++ b/networking/nc.c
@@ -198,7 +198,7 @@ int nc_main(int argc, char **argv)
                         }
 #endif
                         close_on_exec_on(sfd);
- accept_again:
+ IF_NC_EXTRA(accept_again:)
                         cfd = accept(sfd, NULL, 0);
                         if (cfd < 0)
                                 bb_perror_msg_and_die("accept");
@@ -216,6 +216,7 @@ int nc_main(int argc, char **argv)
                 /*signal(SIGALRM, SIG_DFL);*/
         }
 
+#if ENABLE_NC_EXTRA
         /* -e given? */
         if (execparam) {
                 pid_t pid;
@@ -234,6 +235,7 @@ int nc_main(int argc, char **argv)
                 IF_NC_EXTRA(BB_EXECVP(execparam[0], execparam);)
                 IF_NC_EXTRA(bb_perror_msg_and_die("can't execute '%s'", execparam[0]);)
         }
+#endif
 
         /* Select loop copying stdin to cfd, and cfd to stdout */