[PATCH] uml: separate libc-dependent helper code

The serial UML OS-abstraction layer patch (um/kernel dir).

This moves all systemcalls from helper.c file under os-Linux dir

Signed-off-by: Gennady Sharapov <Gennady.V.Sharapov@intel.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c
index de3bce7..1c55d58 100644 (file)
--- 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 147ec19..49acb2b 100644 (file)
--- 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 d934181..def013b 100644 (file)
--- 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 3730d4f..098fa65 100644 (file)
--- 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 14dd200..ed4a1a6 100644 (file)
--- 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 71af444..89fbec1 100644 (file)
--- 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 8d91f66..b94c661 100644 (file)
--- 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 90e0e5f..b530f1a 100644 (file)
--- 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 (file)
index 162ac31..0000000
--- 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 b9f5351..112d728 100644 (file)
--- 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 f985858..3de9d21 100644 (file)
--- 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 a97a72e..7713e7a 100644 (file)
--- 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 a527511..3fbfd95 100644 (file)
--- 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 41d17c7..4c23116 100644 (file)
--- 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 0b761a0..b83ac8e 100644 (file)
--- 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 41cfb09..ffa759a 100644 (file)
--- 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 cd4d654..901b85e 100644 (file)
--- 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 4ba9b17..5294533 100644 (file)
--- 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 33fb0bd..36cc847 100644 (file)
--- 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 @@ out_free:
        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;
        }