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authorGennady Sharapov <Gennady.V.Sharapov@intel.com>2005-11-07 00:58:50 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 07:53:31 -0800
commitbb578426253ab9950cc20b4e5dd6aefb5500144f (patch)
treecd1b874512440f739dc555a40efb5edd51de275b /arch/um/kernel
parent0e76422ca5f34bb43b97c0945646ef072bcc1776 (diff)
downloadop-kernel-dev-bb578426253ab9950cc20b4e5dd6aefb5500144f.zip
op-kernel-dev-bb578426253ab9950cc20b4e5dd6aefb5500144f.tar.gz
[PATCH] uml: separate libc-dependent uaccess code
The serial UML OS-abstraction layer patch (um/kernel dir). This moves all systemcalls from uaccess_user.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>
Diffstat (limited to 'arch/um/kernel')
-rw-r--r--arch/um/kernel/Makefile2
-rw-r--r--arch/um/kernel/tt/uaccess_user.c1
-rw-r--r--arch/um/kernel/uaccess.c30
-rw-r--r--arch/um/kernel/uaccess_user.c64
4 files changed, 32 insertions, 65 deletions
diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
index 1a0001b..72fd4ea 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -10,7 +10,7 @@ obj-y = config.o exec_kern.o exitcode.o \
helper.o init_task.o irq.o irq_user.o ksyms.o main.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_user.o um_arch.o \
+ time_kern.o tlb.o trap_kern.o trap_user.o uaccess.o um_arch.o \
umid.o user_util.o
obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o
diff --git a/arch/um/kernel/tt/uaccess_user.c b/arch/um/kernel/tt/uaccess_user.c
index 8c220f0..6c92bbc 100644
--- a/arch/um/kernel/tt/uaccess_user.c
+++ b/arch/um/kernel/tt/uaccess_user.c
@@ -10,6 +10,7 @@
#include "uml_uaccess.h"
#include "task.h"
#include "kern_util.h"
+#include "os.h"
int __do_copy_from_user(void *to, const void *from, int n,
void **fault_addr, void **fault_catcher)
diff --git a/arch/um/kernel/uaccess.c b/arch/um/kernel/uaccess.c
new file mode 100644
index 0000000..054e3de
--- /dev/null
+++ b/arch/um/kernel/uaccess.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk)
+ * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+/* These are here rather than tt/uaccess.c because skas mode needs them in
+ * order to do SIGBUS recovery when a tmpfs mount runs out of room.
+ */
+
+#include <linux/string.h>
+#include "os.h"
+
+void __do_copy(void *to, const void *from, int n)
+{
+ memcpy(to, from, n);
+}
+
+
+int __do_copy_to_user(void *to, const void *from, int n,
+ void **fault_addr, void **fault_catcher)
+{
+ unsigned long fault;
+ int faulted;
+
+ fault = __do_user_copy(to, from, n, fault_addr, fault_catcher,
+ __do_copy, &faulted);
+ if(!faulted) return(0);
+ else return(n - (fault - (unsigned long) to));
+}
diff --git a/arch/um/kernel/uaccess_user.c b/arch/um/kernel/uaccess_user.c
deleted file mode 100644
index d035257..0000000
--- a/arch/um/kernel/uaccess_user.c
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk)
- * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#include <setjmp.h>
-#include <string.h>
-
-/* These are here rather than tt/uaccess.c because skas mode needs them in
- * order to do SIGBUS recovery when a tmpfs mount runs out of room.
- */
-
-unsigned long __do_user_copy(void *to, const void *from, int n,
- void **fault_addr, void **fault_catcher,
- void (*op)(void *to, const void *from,
- int n), int *faulted_out)
-{
- unsigned long *faddrp = (unsigned long *) fault_addr, ret;
-
- sigjmp_buf jbuf;
- *fault_catcher = &jbuf;
- if(sigsetjmp(jbuf, 1) == 0){
- (*op)(to, from, n);
- ret = 0;
- *faulted_out = 0;
- }
- else {
- ret = *faddrp;
- *faulted_out = 1;
- }
- *fault_addr = NULL;
- *fault_catcher = NULL;
- return ret;
-}
-
-void __do_copy(void *to, const void *from, int n)
-{
- memcpy(to, from, n);
-}
-
-
-int __do_copy_to_user(void *to, const void *from, int n,
- void **fault_addr, void **fault_catcher)
-{
- unsigned long fault;
- int faulted;
-
- fault = __do_user_copy(to, from, n, fault_addr, fault_catcher,
- __do_copy, &faulted);
- if(!faulted) return(0);
- else return(n - (fault - (unsigned long) to));
-}
-
-/*
- * 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:
- */
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