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-rw-r--r--arch/um/kernel/tt/include/uaccess-tt.h14
-rw-r--r--arch/um/kernel/tt/syscall_kern.c47
-rw-r--r--arch/um/kernel/tt/syscall_user.c35
-rw-r--r--arch/um/kernel/tt/tlb.c26
4 files changed, 51 insertions, 71 deletions
diff --git a/arch/um/kernel/tt/include/uaccess-tt.h b/arch/um/kernel/tt/include/uaccess-tt.h
index 3fbb5fe26f49..aa6db384af80 100644
--- a/arch/um/kernel/tt/include/uaccess-tt.h
+++ b/arch/um/kernel/tt/include/uaccess-tt.h
@@ -33,7 +33,7 @@ extern unsigned long uml_physmem;
(((unsigned long) (addr) <= ((unsigned long) (addr) + (size))) && \
(under_task_size(addr, size) || is_stack(addr, size))))
-static inline int verify_area_tt(int type, const void * addr,
+static inline int verify_area_tt(int type, const void __user * addr,
unsigned long size)
{
return(access_ok_tt(type, addr, size) ? 0 : -EFAULT);
@@ -50,12 +50,12 @@ extern int __do_clear_user(void *mem, size_t len, void **fault_addr,
extern int __do_strnlen_user(const char *str, unsigned long n,
void **fault_addr, void **fault_catcher);
-extern int copy_from_user_tt(void *to, const void *from, int n);
-extern int copy_to_user_tt(void *to, const void *from, int n);
-extern int strncpy_from_user_tt(char *dst, const char *src, int count);
-extern int __clear_user_tt(void *mem, int len);
-extern int clear_user_tt(void *mem, int len);
-extern int strnlen_user_tt(const void *str, int len);
+extern int copy_from_user_tt(void *to, const void __user *from, int n);
+extern int copy_to_user_tt(void __user *to, const void *from, int n);
+extern int strncpy_from_user_tt(char *dst, const char __user *src, int count);
+extern int __clear_user_tt(void __user *mem, int len);
+extern int clear_user_tt(void __user *mem, int len);
+extern int strnlen_user_tt(const void __user *str, int len);
#endif
diff --git a/arch/um/kernel/tt/syscall_kern.c b/arch/um/kernel/tt/syscall_kern.c
index 2650a628719e..3d29c90514cc 100644
--- a/arch/um/kernel/tt/syscall_kern.c
+++ b/arch/um/kernel/tt/syscall_kern.c
@@ -12,36 +12,41 @@
#include "asm/uaccess.h"
#include "asm/stat.h"
#include "sysdep/syscalls.h"
+#include "sysdep/sigcontext.h"
#include "kern_util.h"
+#include "syscall.h"
-extern syscall_handler_t *sys_call_table[];
-
-long execute_syscall_tt(void *r)
+void syscall_handler_tt(int sig, struct pt_regs *regs)
{
- struct pt_regs *regs = r;
- long res;
+ void *sc;
+ long result;
int syscall;
-
#ifdef CONFIG_SYSCALL_DEBUG
+ int index;
+ index = record_syscall_start(syscall);
+#endif
+ sc = UPT_SC(&regs->regs);
+ SC_START_SYSCALL(sc);
+
+ syscall_trace(&regs->regs, 0);
+
current->thread.nsyscalls++;
nsyscalls++;
-#endif
syscall = UPT_SYSCALL_NR(&regs->regs);
if((syscall >= NR_syscalls) || (syscall < 0))
- res = -ENOSYS;
- else res = EXECUTE_SYSCALL(syscall, regs);
+ result = -ENOSYS;
+ else result = EXECUTE_SYSCALL(syscall, regs);
- return(res);
-}
+ /* regs->sc may have changed while the system call ran (there may
+ * have been an interrupt or segfault), so it needs to be refreshed.
+ */
+ UPT_SC(&regs->regs) = sc;
-/*
- * 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:
- */
+ SC_SET_SYSCALL_RETURN(sc, result);
+
+ syscall_trace(&regs->regs, 1);
+#ifdef CONFIG_SYSCALL_DEBUG
+ record_syscall_end(index, result);
+#endif
+}
diff --git a/arch/um/kernel/tt/syscall_user.c b/arch/um/kernel/tt/syscall_user.c
index b218316cfdb2..902987bf379b 100644
--- a/arch/um/kernel/tt/syscall_user.c
+++ b/arch/um/kernel/tt/syscall_user.c
@@ -13,42 +13,9 @@
#include "task.h"
#include "user_util.h"
#include "kern_util.h"
-#include "syscall_user.h"
+#include "syscall.h"
#include "tt.h"
-
-void syscall_handler_tt(int sig, union uml_pt_regs *regs)
-{
- void *sc;
- long result;
- int syscall;
-#ifdef UML_CONFIG_DEBUG_SYSCALL
- int index;
-#endif
-
- syscall = UPT_SYSCALL_NR(regs);
- sc = UPT_SC(regs);
- SC_START_SYSCALL(sc);
-
-#ifdef UML_CONFIG_DEBUG_SYSCALL
- index = record_syscall_start(syscall);
-#endif
- syscall_trace(regs, 0);
- result = execute_syscall_tt(regs);
-
- /* regs->sc may have changed while the system call ran (there may
- * have been an interrupt or segfault), so it needs to be refreshed.
- */
- UPT_SC(regs) = sc;
-
- SC_SET_SYSCALL_RETURN(sc, result);
-
- syscall_trace(regs, 1);
-#ifdef UML_CONFIG_DEBUG_SYSCALL
- record_syscall_end(index, result);
-#endif
-}
-
void do_sigtrap(void *task)
{
UPT_SYSCALL_NR(TASK_REGS(task)) = -1;
diff --git a/arch/um/kernel/tt/tlb.c b/arch/um/kernel/tt/tlb.c
index 2eefb43bc9c2..f1d85dbb45b9 100644
--- a/arch/um/kernel/tt/tlb.c
+++ b/arch/um/kernel/tt/tlb.c
@@ -17,25 +17,31 @@
#include "os.h"
#include "tlb.h"
-static void do_ops(union mm_context *mmu, struct host_vm_op *ops, int last)
+static int do_ops(union mm_context *mmu, struct host_vm_op *ops, int last,
+ int finished, void **flush)
{
struct host_vm_op *op;
- int i;
+ int i, ret=0;
- for(i = 0; i <= last; i++){
+ for(i = 0; i <= last && !ret; i++){
op = &ops[i];
switch(op->type){
case MMAP:
- os_map_memory((void *) op->u.mmap.addr, op->u.mmap.fd,
- op->u.mmap.offset, op->u.mmap.len,
- op->u.mmap.r, op->u.mmap.w,
- op->u.mmap.x);
+ ret = os_map_memory((void *) op->u.mmap.addr,
+ op->u.mmap.fd, op->u.mmap.offset,
+ op->u.mmap.len, op->u.mmap.r,
+ op->u.mmap.w, op->u.mmap.x);
break;
case MUNMAP:
- os_unmap_memory((void *) op->u.munmap.addr,
- op->u.munmap.len);
+ ret = os_unmap_memory((void *) op->u.munmap.addr,
+ op->u.munmap.len);
break;
case MPROTECT:
+ ret = protect_memory(op->u.mprotect.addr,
+ op->u.munmap.len,
+ op->u.mprotect.r,
+ op->u.mprotect.w,
+ op->u.mprotect.x, 1);
protect_memory(op->u.mprotect.addr, op->u.munmap.len,
op->u.mprotect.r, op->u.mprotect.w,
op->u.mprotect.x, 1);
@@ -45,6 +51,8 @@ static void do_ops(union mm_context *mmu, struct host_vm_op *ops, int last)
break;
}
}
+
+ return ret;
}
static void fix_range(struct mm_struct *mm, unsigned long start_addr,
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