diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c
index de3bce71aeb3e8f3b3d283da35a77949a6444022..1c55d580248993c9ef1dd7249ccf8bb8e548c745 100644
--- a/arch/um/drivers/chan_user.c
+++ b/arch/um/drivers/chan_user.c
@@ -16,7 +16,6 @@
 #include "user_util.h"
 #include "chan_user.h"
 #include "user.h"
-#include "helper.h"
 #include "os.h"
 #include "choose-mode.h"
 #include "mode.h"
diff --git a/arch/um/drivers/harddog_kern.c b/arch/um/drivers/harddog_kern.c
index 147ec19f6bb9dc98c2dd026c25bd49cf9cc1a959..49acb2badf3229437c7a0149bc3da5be8d7d2109 100644
--- a/arch/um/drivers/harddog_kern.c
+++ b/arch/um/drivers/harddog_kern.c
@@ -46,7 +46,6 @@
 #include <linux/smp_lock.h>
 #include <linux/init.h>
 #include <asm/uaccess.h>
-#include "helper.h"
 #include "mconsole.h"
 
 MODULE_LICENSE("GPL");
diff --git a/arch/um/drivers/harddog_user.c b/arch/um/drivers/harddog_user.c
index d934181b8d4c67238b3fa10a5941952884743e1b..def013b5a3c7a5ec373dae711829b4ae10f76349 100644
--- a/arch/um/drivers/harddog_user.c
+++ b/arch/um/drivers/harddog_user.c
@@ -8,7 +8,6 @@
 #include <errno.h>
 #include "user_util.h"
 #include "user.h"
-#include "helper.h"
 #include "mconsole.h"
 #include "os.h"
 #include "choose-mode.h"
diff --git a/arch/um/drivers/net_user.c b/arch/um/drivers/net_user.c
index 3730d4f1271368e43ee147303973b8490ab153ea..098fa65981aba6404eb9422137466d39d5ffc38b 100644
--- a/arch/um/drivers/net_user.c
+++ b/arch/um/drivers/net_user.c
@@ -16,7 +16,6 @@
 #include "user_util.h"
 #include "kern_util.h"
 #include "net_user.h"
-#include "helper.h"
 #include "os.h"
 
 int tap_open_common(void *dev, char *gate_addr)
diff --git a/arch/um/drivers/port_user.c b/arch/um/drivers/port_user.c
index 14dd2002d2da6946bd61ac133198f112338cff31..ed4a1a6c5d83fa03fb515f69a2fc30340f596301 100644
--- a/arch/um/drivers/port_user.c
+++ b/arch/um/drivers/port_user.c
@@ -18,7 +18,6 @@
 #include "user.h"
 #include "chan_user.h"
 #include "port.h"
-#include "helper.h"
 #include "os.h"
 
 struct port_chan {
diff --git a/arch/um/drivers/slip_user.c b/arch/um/drivers/slip_user.c
index 71af444e591f8bff7b097ac57dc85376529fb677..89fbec185cc16ec10d2d8df49410cf8bb32080a1 100644
--- a/arch/um/drivers/slip_user.c
+++ b/arch/um/drivers/slip_user.c
@@ -14,7 +14,6 @@
 #include "net_user.h"
 #include "slip.h"
 #include "slip_common.h"
-#include "helper.h"
 #include "os.h"
 
 void slip_user_init(void *data, void *dev)
diff --git a/arch/um/drivers/slirp_user.c b/arch/um/drivers/slirp_user.c
index 8d91f663d82c684267567f2489f8059b738590e8..b94c66114bc85d7a56fe4d9f6d29d4d31a633c13 100644
--- a/arch/um/drivers/slirp_user.c
+++ b/arch/um/drivers/slirp_user.c
@@ -13,7 +13,6 @@
 #include "net_user.h"
 #include "slirp.h"
 #include "slip_common.h"
-#include "helper.h"
 #include "os.h"
 
 void slirp_user_init(void *data, void *dev)
diff --git a/arch/um/drivers/xterm.c b/arch/um/drivers/xterm.c
index 90e0e5ff451e1cc2f21909ff90b6a40575172baa..b530f1a6540d506a556e38c90dc3afec63f2f7f6 100644
--- a/arch/um/drivers/xterm.c
+++ b/arch/um/drivers/xterm.c
@@ -14,7 +14,6 @@
 #include <sys/socket.h>
 #include "kern_util.h"
 #include "chan_user.h"
-#include "helper.h"
 #include "user_util.h"
 #include "user.h"
 #include "os.h"
diff --git a/arch/um/include/helper.h b/arch/um/include/helper.h
deleted file mode 100644
index 162ac31192fdf49a76678dd0ee2cec3693840809..0000000000000000000000000000000000000000
--- a/arch/um/include/helper.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/* 
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __HELPER_H__
-#define __HELPER_H__
-
-extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
-		      unsigned long *stack_out);
-extern int run_helper_thread(int (*proc)(void *), void *arg, 
-			     unsigned int flags, unsigned long *stack_out,
-			     int stack_order);
-extern int helper_wait(int pid);
-
-#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/include/os.h b/arch/um/include/os.h
index b9f53519bbe638e329629f3470ee30e3241ed151..112d7288f0cf816678cd3515f0b8923db0190e96 100644
--- a/arch/um/include/os.h
+++ b/arch/um/include/os.h
@@ -205,6 +205,14 @@ extern unsigned long __do_user_copy(void *to, const void *from, int n,
 				    void (*op)(void *to, const void *from,
 					       int n), int *faulted_out);
 
+/* helper.c */
+extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
+		      unsigned long *stack_out);
+extern int run_helper_thread(int (*proc)(void *), void *arg,
+			     unsigned int flags, unsigned long *stack_out,
+			     int stack_order);
+extern int helper_wait(int pid);
+
 #endif
 
 /*
diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
index f9858583863a6eb9cbf11cca1145fee5f1fc1906..3de9d21e36bf042156b8b6c61cd8831c8885abea 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -7,7 +7,7 @@ extra-y := vmlinux.lds
 clean-files :=
 
 obj-y = config.o exec_kern.o exitcode.o \
-	helper.o init_task.o irq.o irq_user.o ksyms.o mem.o physmem.o \
+	init_task.o irq.o irq_user.o ksyms.o mem.o physmem.o \
 	process_kern.o ptrace.o reboot.o resource.o sigio_user.o sigio_kern.o \
 	signal_kern.o signal_user.o smp.o syscall_kern.o sysrq.o time.o \
 	time_kern.o tlb.o trap_kern.o trap_user.o uaccess.o um_arch.o \
@@ -24,8 +24,7 @@ obj-$(CONFIG_MODE_SKAS) += skas/
 
 user-objs-$(CONFIG_TTY_LOG) += tty_log.o
 
-USER_OBJS := $(user-objs-y) config.o helper.o time.o tty_log.o umid.o \
-	user_util.o
+USER_OBJS := $(user-objs-y) config.o time.o tty_log.o umid.o user_util.o
 
 include arch/um/scripts/Makefile.rules
 
diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index a97a72e516aa6f6c6b7b4e6e0e4814b6e24f3a69..7713e7a6f476fcdf910a99565be74ccdb01828f5 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -20,7 +20,6 @@
 #include "user_util.h"
 #include "mem_user.h"
 #include "os.h"
-#include "helper.h"
 
 EXPORT_SYMBOL(stop);
 EXPORT_SYMBOL(uml_physmem);
diff --git a/arch/um/kernel/sigio_user.c b/arch/um/kernel/sigio_user.c
index a52751108aa125c3299926efdb8d8aad53496a72..3fbfd956bfe7a297e12d6994d273a49735d34340 100644
--- a/arch/um/kernel/sigio_user.c
+++ b/arch/um/kernel/sigio_user.c
@@ -18,7 +18,6 @@
 #include "kern_util.h"
 #include "user_util.h"
 #include "sigio.h"
-#include "helper.h"
 #include "os.h"
 
 /* Changed during early boot */
diff --git a/arch/um/kernel/user_util.c b/arch/um/kernel/user_util.c
index 41d17c71511c51cf01077d51d2c6637863892c59..4c231161f25717b2bcbfad0c31598a87488beab0 100644
--- a/arch/um/kernel/user_util.c
+++ b/arch/um/kernel/user_util.c
@@ -27,7 +27,6 @@
 #include "user.h"
 #include "mem_user.h"
 #include "init.h"
-#include "helper.h"
 #include "ptrace_user.h"
 #include "uml-config.h"
 
diff --git a/arch/um/os-Linux/Makefile b/arch/um/os-Linux/Makefile
index 0b761a08f0df973659bbb13b1fa20d1afd9aad27..b83ac8e21c354eb6f7a27b21599569c31157143b 100644
--- a/arch/um/os-Linux/Makefile
+++ b/arch/um/os-Linux/Makefile
@@ -3,10 +3,11 @@
 # Licensed under the GPL
 #
 
-obj-y = aio.o elf_aux.o file.o main.o mem.o process.o signal.o start_up.o \
-	time.o tt.o tty.o uaccess.o user_syms.o drivers/ sys-$(SUBARCH)/
+obj-y = aio.o elf_aux.o file.o helper.o main.o mem.o process.o signal.o \
+	start_up.o time.o tt.o tty.o uaccess.o user_syms.o drivers/ \
+	sys-$(SUBARCH)/
 
-USER_OBJS := aio.o elf_aux.o file.o main.o mem.o process.o signal.o \
+USER_OBJS := aio.o elf_aux.o file.o helper.o main.o mem.o process.o signal.o \
 	start_up.o time.o tt.o tty.o uaccess.o
 
 elf_aux.o: $(ARCH_DIR)/kernel-offsets.h
diff --git a/arch/um/os-Linux/aio.c b/arch/um/os-Linux/aio.c
index 41cfb09442013325f7511949f8d6171e2bbac487..ffa759addd3c657e7292c07482d49d6dbc24bc38 100644
--- a/arch/um/os-Linux/aio.c
+++ b/arch/um/os-Linux/aio.c
@@ -10,7 +10,6 @@
 #include <sched.h>
 #include <sys/syscall.h>
 #include "os.h"
-#include "helper.h"
 #include "aio.h"
 #include "init.h"
 #include "user.h"
diff --git a/arch/um/os-Linux/drivers/ethertap_user.c b/arch/um/os-Linux/drivers/ethertap_user.c
index cd4d6544da715eef01010a61ea46ff127651f9af..901b85e8a1c65c4df84ae87018b3d55cefd45698 100644
--- a/arch/um/os-Linux/drivers/ethertap_user.c
+++ b/arch/um/os-Linux/drivers/ethertap_user.c
@@ -19,7 +19,6 @@
 #include "user_util.h"
 #include "net_user.h"
 #include "etap.h"
-#include "helper.h"
 #include "os.h"
 
 #define MAX_PACKET ETH_MAX_PACKET
diff --git a/arch/um/os-Linux/drivers/tuntap_user.c b/arch/um/os-Linux/drivers/tuntap_user.c
index 4ba9b17adf13cac85f62dfc224218bbeb9b354d7..52945338b64d503ea13c0d20ad4d45ba607e53f5 100644
--- a/arch/um/os-Linux/drivers/tuntap_user.c
+++ b/arch/um/os-Linux/drivers/tuntap_user.c
@@ -20,7 +20,6 @@
 #include "kern_util.h"
 #include "user_util.h"
 #include "user.h"
-#include "helper.h"
 #include "os.h"
 
 #define MAX_PACKET ETH_MAX_PACKET
diff --git a/arch/um/kernel/helper.c b/arch/um/os-Linux/helper.c
similarity index 93%
rename from arch/um/kernel/helper.c
rename to arch/um/os-Linux/helper.c
index 33fb0bd3b11a13af3f0db7ddf272af3aa4f3e871..36cc8475bcdacc76aba1d932a7d2a41eff6392d8 100644
--- a/arch/um/kernel/helper.c
+++ b/arch/um/os-Linux/helper.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
  * Licensed under the GPL
  */
@@ -13,7 +13,6 @@
 #include "user.h"
 #include "kern_util.h"
 #include "user_util.h"
-#include "helper.h"
 #include "os.h"
 
 struct helper_data {
@@ -46,7 +45,7 @@ static int helper_child(void *arg)
 	errval = errno;
 	printk("execvp of '%s' failed - errno = %d\n", argv[0], errno);
 	os_write_file(data->fd, &errval, sizeof(errval));
-	os_kill_process(os_getpid(), 0);
+	kill(os_getpid(), SIGKILL);
 	return(0);
 }
 
@@ -90,7 +89,7 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
 		goto out_close;
 	}
 
-	os_close_file(fds[1]);
+	close(fds[1]);
 	fds[1] = -1;
 
 	/*Read the errno value from the child.*/
@@ -98,7 +97,8 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
 	if(n < 0){
 		printk("run_helper : read on pipe failed, ret = %d\n", -n);
 		ret = n;
-		os_kill_process(pid, 1);
+		kill(pid, SIGKILL);
+		CATCH_EINTR(waitpid(pid, NULL, 0));
 	}
 	else if(n != 0){
 		CATCH_EINTR(n = waitpid(pid, NULL, 0));
@@ -109,8 +109,8 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
 
 out_close:
 	if (fds[1] != -1)
-		os_close_file(fds[1]);
-	os_close_file(fds[0]);
+		close(fds[1]);
+	close(fds[0]);
 out_free:
 	if(stack_out == NULL)
 		free_stack(stack, 0);
@@ -118,7 +118,7 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
 	return(ret);
 }
 
-int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags, 
+int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags,
 		      unsigned long *stack_out, int stack_order)
 {
 	unsigned long stack, sp;
@@ -131,7 +131,7 @@ int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags,
 	pid = clone(proc, (void *) sp, flags | SIGCHLD, arg);
 	if(pid < 0){
 		err = -errno;
-		printk("run_helper_thread : clone failed, errno = %d\n", 
+		printk("run_helper_thread : clone failed, errno = %d\n",
 		       errno);
 		return err;
 	}