[PATCH] uml: move libc-dependent utility procedures

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

This moves all systemcalls from user_util.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 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

11 files changed, 72 insertions, 87 deletions

diff --git a/arch/um/drivers/fd.c b/arch/um/drivers/fd.c
index 3296e86a03a5..c41f75e4acb5 100644
--- a/arch/um/drivers/fd.c
+++ b/arch/um/drivers/fd.c
@@ -11,6 +11,7 @@
 #include "user.h"
 #include "user_util.h"
 #include "chan_user.h"
+#include "os.h"
 
 struct fd_chan {
         int fd;
diff --git a/arch/um/include/os.h b/arch/um/include/os.h
index dd72d66cf0ed..7f27dfe0ecac 100644
--- a/arch/um/include/os.h
+++ b/arch/um/include/os.h
@@ -195,6 +195,8 @@ extern unsigned long long os_usecs(void);
 /* tt.c
  * for tt mode only (will be deleted in future...)
  */
+extern void stop(void);
+extern int wait_for_stop(int pid, int sig, int cont_type, void *relay);
 extern int protect_memory(unsigned long addr, unsigned long len,
                           int r, int w, int x, int must_succeed);
 extern void forward_pending_sigio(int target);
@@ -235,4 +237,12 @@ extern int set_signals(int enable);
 extern void os_fill_handlinfo(struct kern_handlers h);
 extern void do_longjmp(void *p, int val);
 
+/* util.c */
+extern void stack_protections(unsigned long address);
+extern void task_protections(unsigned long address);
+extern int raw(int fd);
+extern void setup_machinename(char *machine_out);
+extern void setup_hostinfo(void);
+extern int setjmp_wrapper(void (*proc)(void *, void *), ...);
+
 #endif
diff --git a/arch/um/include/user_util.h b/arch/um/include/user_util.h
index c1dbd77b073f..a6f1f176cf84 100644
--- a/arch/um/include/user_util.h
+++ b/arch/um/include/user_util.h
@@ -44,10 +44,6 @@ extern unsigned long brk_start;
 extern int pty_output_sigio;
 extern int pty_close_sigio;
 
-extern void stop(void);
-extern void stack_protections(unsigned long address);
-extern void task_protections(unsigned long address);
-extern int wait_for_stop(int pid, int sig, int cont_type, void *relay);
 extern void *add_signal_handler(int sig, void (*handler)(int));
 extern int linux_main(int argc, char **argv);
 extern void set_cmdline(char *cmd);
@@ -55,8 +51,6 @@ extern void input_cb(void (*proc)(void *), void *arg, int arg_len);
 extern int get_pty(void);
 extern void *um_kmalloc(int size);
 extern int switcheroo(int fd, int prot, void *from, void *to, int size);
-extern void setup_machinename(char *machine_out);
-extern void setup_hostinfo(void);
 extern void do_exec(int old_pid, int new_pid);
 extern void tracer_panic(char *msg, ...);
 extern int detach(int pid, int sig);
@@ -70,18 +64,6 @@ extern int cpu_feature(char *what, char *buf, int len);
 extern int arch_handle_signal(int sig, union uml_pt_regs *regs);
 extern int arch_fixup(unsigned long address, void *sc_ptr);
 extern void arch_init_thread(void);
-extern int setjmp_wrapper(void (*proc)(void *, void *), ...);
 extern int raw(int fd);
 
 #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/kernel/Makefile b/arch/um/kernel/Makefile
index 193cc2b7448d..165c8639c9f6 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -10,8 +10,7 @@ obj-y = config.o exec_kern.o exitcode.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 smp.o syscall_kern.o sysrq.o time.o \
-        time_kern.o tlb.o trap_kern.o uaccess.o um_arch.o umid.o \
-        user_util.o
+        time_kern.o tlb.o trap_kern.o uaccess.o um_arch.o umid.o
 
 obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o
 obj-$(CONFIG_GPROF)     += gprof_syms.o
@@ -24,7 +23,7 @@ obj-$(CONFIG_MODE_SKAS) += skas/
 
 user-objs-$(CONFIG_TTY_LOG) += tty_log.o
 
-USER_OBJS := $(user-objs-y) config.o time.o tty_log.o user_util.o
+USER_OBJS := $(user-objs-y) config.o time.o tty_log.o
 
 include arch/um/scripts/Makefile.rules
 
diff --git a/arch/um/kernel/skas/uaccess.c b/arch/um/kernel/skas/uaccess.c
index a5a47528dec7..5992c3257167 100644
--- a/arch/um/kernel/skas/uaccess.c
+++ b/arch/um/kernel/skas/uaccess.c
@@ -13,7 +13,7 @@
 #include "asm/pgtable.h"
 #include "asm/uaccess.h"
 #include "kern_util.h"
-#include "user_util.h"
+#include "os.h"
 
 extern void *um_virt_to_phys(struct task_struct *task, unsigned long addr,
                              pte_t *pte_out);
diff --git a/arch/um/kernel/tt/gdb.c b/arch/um/kernel/tt/gdb.c
index 37e22d71a0d9..786e4edd86c5 100644
--- a/arch/um/kernel/tt/gdb.c
+++ b/arch/um/kernel/tt/gdb.c
@@ -20,6 +20,7 @@
 #include "user_util.h"
 #include "tt.h"
 #include "sysdep/thread.h"
+#include "os.h"
 
 extern int debugger_pid;
 extern int debugger_fd;
diff --git a/arch/um/kernel/tt/ptproxy/ptrace.c b/arch/um/kernel/tt/ptproxy/ptrace.c
index 528a5fc8d887..03774427d468 100644
--- a/arch/um/kernel/tt/ptproxy/ptrace.c
+++ b/arch/um/kernel/tt/ptproxy/ptrace.c
@@ -20,6 +20,7 @@ Jeff Dike (jdike@karaya.com) : Modified for integration into uml
 #include "kern_util.h"
 #include "ptrace_user.h"
 #include "tt.h"
+#include "os.h"
 
 long proxy_ptrace(struct debugger *debugger, int arg1, pid_t arg2,
                   long arg3, long arg4, pid_t child, int *ret)
diff --git a/arch/um/kernel/tt/ptproxy/sysdep.c b/arch/um/kernel/tt/ptproxy/sysdep.c
index a5f0e01e214e..99f178319d03 100644
--- a/arch/um/kernel/tt/ptproxy/sysdep.c
+++ b/arch/um/kernel/tt/ptproxy/sysdep.c
@@ -15,6 +15,7 @@ terms and conditions.
 #include "ptrace_user.h"
 #include "user_util.h"
 #include "user.h"
+#include "os.h"
 
 int get_syscall(pid_t pid, long *arg1, long *arg2, long *arg3, long *arg4, 
                 long *arg5)
diff --git a/arch/um/os-Linux/Makefile b/arch/um/os-Linux/Makefile
index 40c7d6b1df68..08a4e628b24c 100644
--- a/arch/um/os-Linux/Makefile
+++ b/arch/um/os-Linux/Makefile
@@ -5,12 +5,12 @@
 
 obj-y = aio.o elf_aux.o file.o helper.o main.o mem.o process.o signal.o \
         start_up.o time.o trap.o tt.o tty.o uaccess.o umid.o user_syms.o \
-        drivers/ sys-$(SUBARCH)/
+        util.o drivers/ sys-$(SUBARCH)/
 
 obj-$(CONFIG_MODE_SKAS) += skas/
 
 USER_OBJS := aio.o elf_aux.o file.o helper.o main.o mem.o process.o signal.o \
-        start_up.o time.o trap.o tt.o tty.o uaccess.o umid.o
+        start_up.o time.o trap.o tt.o tty.o uaccess.o umid.o util.o
 
 elf_aux.o: $(ARCH_DIR)/kernel-offsets.h
 CFLAGS_elf_aux.o += -I$(objtree)/arch/um
diff --git a/arch/um/os-Linux/tt.c b/arch/um/os-Linux/tt.c
index cb2648b79d0f..404bb63a74a9 100644
--- a/arch/um/os-Linux/tt.c
+++ b/arch/um/os-Linux/tt.c
@@ -63,6 +63,54 @@ void kill_child_dead(int pid)
         } while(1);
 }
 
+void stop(void)
+{
+        while(1) sleep(1000000);
+}
+
+int wait_for_stop(int pid, int sig, int cont_type, void *relay)
+{
+        sigset_t *relay_signals = relay;
+        int status, ret;
+
+        while(1){
+                CATCH_EINTR(ret = waitpid(pid, &status, WUNTRACED));
+                if((ret < 0) ||
+                   !WIFSTOPPED(status) || (WSTOPSIG(status) != sig)){
+                        if(ret < 0){
+                                printk("wait failed, errno = %d\n",
+                                       errno);
+                        }
+                        else if(WIFEXITED(status))
+                                printk("process %d exited with status %d\n",
+                                       pid, WEXITSTATUS(status));
+                        else if(WIFSIGNALED(status))
+                                printk("process %d exited with signal %d\n",
+                                       pid, WTERMSIG(status));
+                        else if((WSTOPSIG(status) == SIGVTALRM) ||
+                                (WSTOPSIG(status) == SIGALRM) ||
+                                (WSTOPSIG(status) == SIGIO) ||
+                                (WSTOPSIG(status) == SIGPROF) ||
+                                (WSTOPSIG(status) == SIGCHLD) ||
+                                (WSTOPSIG(status) == SIGWINCH) ||
+                                (WSTOPSIG(status) == SIGINT)){
+                                ptrace(cont_type, pid, 0, WSTOPSIG(status));
+                                continue;
+                        }
+                        else if((relay_signals != NULL) &&
+                                sigismember(relay_signals, WSTOPSIG(status))){
+                                ptrace(cont_type, pid, 0, WSTOPSIG(status));
+                                continue;
+                        }
+                        else printk("process %d stopped with signal %d\n",
+                                    pid, WSTOPSIG(status));
+                        panic("wait_for_stop failed to wait for %d to stop "
+                              "with %d\n", pid, sig);
+                }
+                return(status);
+        }
+}
+
 /*
  *-------------------------
  * only for tt mode (will be deleted in future...)
diff --git a/arch/um/kernel/user_util.c b/arch/um/os-Linux/util.c
index 4c231161f257..d224434d5610 100644
--- a/arch/um/kernel/user_util.c
+++ b/arch/um/os-Linux/util.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
  * Licensed under the GPL
  */
@@ -29,17 +29,13 @@
 #include "init.h"
 #include "ptrace_user.h"
 #include "uml-config.h"
-
-void stop(void)
-{
-        while(1) sleep(1000000);
-}
+#include "os.h"
 
 void stack_protections(unsigned long address)
 {
         int prot = PROT_READ | PROT_WRITE | PROT_EXEC;
 
-        if(mprotect((void *) address, page_size(), prot) < 0)
+        if(mprotect((void *) address, page_size(), prot) < 0)
                 panic("protecting stack failed, errno = %d", errno);
 }
 
@@ -59,49 +55,6 @@ void task_protections(unsigned long address)
                 panic("protecting stack failed, errno = %d", errno);
 }
 
-int wait_for_stop(int pid, int sig, int cont_type, void *relay)
-{
-        sigset_t *relay_signals = relay;
-        int status, ret;
-
-        while(1){
-                CATCH_EINTR(ret = waitpid(pid, &status, WUNTRACED));
-                if((ret < 0) ||
-                   !WIFSTOPPED(status) || (WSTOPSIG(status) != sig)){
-                        if(ret < 0){
-                                printk("wait failed, errno = %d\n",
-                                       errno);
-                        }
-                        else if(WIFEXITED(status)) 
-                                printk("process %d exited with status %d\n",
-                                       pid, WEXITSTATUS(status));
-                        else if(WIFSIGNALED(status))
-                                printk("process %d exited with signal %d\n",
-                                       pid, WTERMSIG(status));
-                        else if((WSTOPSIG(status) == SIGVTALRM) ||
-                                (WSTOPSIG(status) == SIGALRM) ||
-                                (WSTOPSIG(status) == SIGIO) ||
-                                (WSTOPSIG(status) == SIGPROF) ||
-                                (WSTOPSIG(status) == SIGCHLD) ||
-                                (WSTOPSIG(status) == SIGWINCH) ||
-                                (WSTOPSIG(status) == SIGINT)){
-                                ptrace(cont_type, pid, 0, WSTOPSIG(status));
-                                continue;
-                        }
-                        else if((relay_signals != NULL) &&
-                                sigismember(relay_signals, WSTOPSIG(status))){
-                                ptrace(cont_type, pid, 0, WSTOPSIG(status));
-                                continue;
-                        }
-                        else printk("process %d stopped with signal %d\n",
-                                    pid, WSTOPSIG(status));
-                        panic("wait_for_stop failed to wait for %d to stop "
-                              "with %d\n", pid, sig);
-                }
-                return(status);
-        }
-}
-
 int raw(int fd)
 {
         struct termios tt;
@@ -113,7 +66,7 @@ int raw(int fd)
 
         cfmakeraw(&tt);
 
-        CATCH_EINTR(err = tcsetattr(fd, TCSADRAIN, &tt));
+        CATCH_EINTR(err = tcsetattr(fd, TCSADRAIN, &tt));
         if(err < 0)
                 return -errno;
 
@@ -149,7 +102,7 @@ void setup_hostinfo(void)
 
 int setjmp_wrapper(void (*proc)(void *, void *), ...)
 {
-        va_list args;
+        va_list args;
         sigjmp_buf buf;
         int n;
 
@@ -161,14 +114,3 @@ int setjmp_wrapper(void (*proc)(void *, void *), ...)
         va_end(args);
         return(n);
 }
-
-/*
- * 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:
- */