diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/um/include/shared/os.h | 6 | ||||
| -rw-r--r-- | arch/um/include/shared/um_uaccess.h | 3 | ||||
| -rw-r--r-- | arch/um/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/um/kernel/uaccess.c | 33 | ||||
| -rw-r--r-- | arch/um/os-Linux/Makefile | 4 | ||||
| -rw-r--r-- | arch/um/os-Linux/uaccess.c | 32 |
6 files changed, 3 insertions, 77 deletions
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h index 83c7c2ecd61..2e2663a8e91 100644 --- a/arch/um/include/shared/os.h +++ b/arch/um/include/shared/os.h @@ -203,12 +203,6 @@ extern int os_drop_memory(void *addr, int length); extern int can_drop_memory(void); extern void os_flush_stdout(void); -/* uaccess.c */ -extern unsigned long __do_user_copy(void *to, const void *from, int n, - void **fault_addr, jmp_buf **fault_catcher, - void (*op)(void *to, const void *from, - int n), int *faulted_out); - /* execvp.c */ extern int execvp_noalloc(char *buf, const char *file, char *const argv[]); /* helper.c */ diff --git a/arch/um/include/shared/um_uaccess.h b/arch/um/include/shared/um_uaccess.h index 45c04999d67..51e1cce92d3 100644 --- a/arch/um/include/shared/um_uaccess.h +++ b/arch/um/include/shared/um_uaccess.h @@ -32,9 +32,6 @@ extern int copy_from_user(void *to, const void __user *from, int n); extern int copy_to_user(void __user *to, const void *from, int n); -extern int __do_copy_to_user(void *to, const void *from, int n, - void **fault_addr, jmp_buf **fault_catcher); - /* * strncpy_from_user: - Copy a NUL terminated string from userspace. * @dst: Destination address, in kernel space. This buffer must be at diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile index c4491c15afb..bc494741b1f 100644 --- a/arch/um/kernel/Makefile +++ b/arch/um/kernel/Makefile @@ -11,7 +11,7 @@ clean-files := obj-y = config.o exec.o exitcode.o init_task.o irq.o ksyms.o mem.o \ physmem.o process.o ptrace.o reboot.o sigio.o \ - signal.o smp.o syscall.o sysrq.o time.o tlb.o trap.o uaccess.o \ + signal.o smp.o syscall.o sysrq.o time.o tlb.o trap.o \ um_arch.o umid.o skas/ obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o diff --git a/arch/um/kernel/uaccess.c b/arch/um/kernel/uaccess.c deleted file mode 100644 index dd33f040c52..00000000000 --- a/arch/um/kernel/uaccess.c +++ /dev/null @@ -1,33 +0,0 @@ -/* - * Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk) - * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Licensed under the GPL - */ - -/* - * These are here rather than tt/uaccess.c because skas mode needs them in - * order to do SIGBUS recovery when a tmpfs mount runs out of room. - */ - -#include <linux/string.h> -#include "os.h" - -static void __do_copy(void *to, const void *from, int n) -{ - memcpy(to, from, n); -} - - -int __do_copy_to_user(void *to, const void *from, int n, - void **fault_addr, jmp_buf **fault_catcher) -{ - unsigned long fault; - int faulted; - - fault = __do_user_copy(to, from, n, fault_addr, fault_catcher, - __do_copy, &faulted); - if (!faulted) - return 0; - else - return n - (fault - (unsigned long) to); -} diff --git a/arch/um/os-Linux/Makefile b/arch/um/os-Linux/Makefile index b33f4dfe7ae..7aec5bfea33 100644 --- a/arch/um/os-Linux/Makefile +++ b/arch/um/os-Linux/Makefile @@ -4,14 +4,14 @@ # obj-y = aio.o execvp.o file.o helper.o irq.o main.o mem.o process.o \ - registers.o sigio.o signal.o start_up.o time.o tty.o uaccess.o \ + registers.o sigio.o signal.o start_up.o time.o tty.o \ umid.o tls.o user_syms.o util.o drivers/ sys-$(SUBARCH)/ skas/ obj-$(CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA) += elf_aux.o USER_OBJS := $(user-objs-y) aio.o elf_aux.o execvp.o file.o helper.o irq.o \ main.o mem.o process.o registers.o sigio.o signal.o start_up.o time.o \ - tty.o tls.o uaccess.o umid.o util.o + tty.o tls.o umid.o util.o CFLAGS_user_syms.o += -DSUBARCH_$(SUBARCH) diff --git a/arch/um/os-Linux/uaccess.c b/arch/um/os-Linux/uaccess.c deleted file mode 100644 index 087ed74ffca..00000000000 --- a/arch/um/os-Linux/uaccess.c +++ /dev/null @@ -1,32 +0,0 @@ -/* - * Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk) - * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Licensed under the GPL - */ - -#include <stddef.h> -#include "longjmp.h" - -unsigned long __do_user_copy(void *to, const void *from, int n, - void **fault_addr, jmp_buf **fault_catcher, - void (*op)(void *to, const void *from, - int n), int *faulted_out) -{ - unsigned long *faddrp = (unsigned long *) fault_addr, ret; - - jmp_buf jbuf; - *fault_catcher = &jbuf; - if (UML_SETJMP(&jbuf) == 0) { - (*op)(to, from, n); - ret = 0; - *faulted_out = 0; - } - else { - ret = *faddrp; - *faulted_out = 1; - } - *fault_addr = NULL; - *fault_catcher = NULL; - return ret; -} - |