diff options
| author | Al Viro <viro@ftp.linux.org.uk> | 2011-08-18 15:08:49 -0400 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2011-11-02 09:15:13 -0400 |
| commit | fced95cacfc21b441ab33f5e7bbc750327e80325 (patch) | |
| tree | 466f87c5d9b361b1f8bc29de03168bfe6d800a04 /arch/um/include/shared | |
| parent | ece67c8697f32699f6977d3d1ae2ae9f7892a913 (diff) | |
um: kill um_uaccess.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/include/shared')
| -rw-r--r-- | arch/um/include/shared/um_uaccess.h | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/arch/um/include/shared/um_uaccess.h b/arch/um/include/shared/um_uaccess.h deleted file mode 100644 index 51e1cce92d36..000000000000 --- a/arch/um/include/shared/um_uaccess.h +++ /dev/null | |||
| @@ -1,94 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) | ||
| 3 | * Licensed under the GPL | ||
| 4 | */ | ||
| 5 | |||
| 6 | #ifndef __ARCH_UM_UACCESS_H | ||
| 7 | #define __ARCH_UM_UACCESS_H | ||
| 8 | |||
| 9 | #include <asm/elf.h> | ||
| 10 | #include <asm/fixmap.h> | ||
| 11 | #include "sysdep/archsetjmp.h" | ||
| 12 | |||
| 13 | #define __under_task_size(addr, size) \ | ||
| 14 | (((unsigned long) (addr) < TASK_SIZE) && \ | ||
| 15 | (((unsigned long) (addr) + (size)) < TASK_SIZE)) | ||
| 16 | |||
| 17 | #define __access_ok_vsyscall(type, addr, size) \ | ||
| 18 | ((type == VERIFY_READ) && \ | ||
| 19 | ((unsigned long) (addr) >= FIXADDR_USER_START) && \ | ||
| 20 | ((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \ | ||
| 21 | ((unsigned long) (addr) + (size) >= (unsigned long)(addr))) | ||
| 22 | |||
| 23 | #define __addr_range_nowrap(addr, size) \ | ||
| 24 | ((unsigned long) (addr) <= ((unsigned long) (addr) + (size))) | ||
| 25 | |||
| 26 | #define access_ok(type, addr, size) \ | ||
| 27 | (__addr_range_nowrap(addr, size) && \ | ||
| 28 | (__under_task_size(addr, size) || \ | ||
| 29 | __access_ok_vsyscall(type, addr, size) || \ | ||
| 30 | segment_eq(get_fs(), KERNEL_DS))) | ||
| 31 | |||
| 32 | extern int copy_from_user(void *to, const void __user *from, int n); | ||
| 33 | extern int copy_to_user(void __user *to, const void *from, int n); | ||
| 34 | |||
| 35 | /* | ||
| 36 | * strncpy_from_user: - Copy a NUL terminated string from userspace. | ||
| 37 | * @dst: Destination address, in kernel space. This buffer must be at | ||
| 38 | * least @count bytes long. | ||
| 39 | * @src: Source address, in user space. | ||
| 40 | * @count: Maximum number of bytes to copy, including the trailing NUL. | ||
| 41 | * | ||
| 42 | * Copies a NUL-terminated string from userspace to kernel space. | ||
| 43 | * | ||
| 44 | * On success, returns the length of the string (not including the trailing | ||
| 45 | * NUL). | ||
| 46 | * | ||
| 47 | * If access to userspace fails, returns -EFAULT (some data may have been | ||
| 48 | * copied). | ||
| 49 | * | ||
| 50 | * If @count is smaller than the length of the string, copies @count bytes | ||
| 51 | * and returns @count. | ||
| 52 | */ | ||
| 53 | |||
| 54 | extern int strncpy_from_user(char *dst, const char __user *src, int count); | ||
| 55 | |||
| 56 | /* | ||
| 57 | * __clear_user: - Zero a block of memory in user space, with less checking. | ||
| 58 | * @to: Destination address, in user space. | ||
| 59 | * @n: Number of bytes to zero. | ||
| 60 | * | ||
| 61 | * Zero a block of memory in user space. Caller must check | ||
| 62 | * the specified block with access_ok() before calling this function. | ||
| 63 | * | ||
| 64 | * Returns number of bytes that could not be cleared. | ||
| 65 | * On success, this will be zero. | ||
| 66 | */ | ||
| 67 | extern int __clear_user(void __user *mem, int len); | ||
| 68 | |||
| 69 | /* | ||
| 70 | * clear_user: - Zero a block of memory in user space. | ||
| 71 | * @to: Destination address, in user space. | ||
| 72 | * @n: Number of bytes to zero. | ||
| 73 | * | ||
| 74 | * Zero a block of memory in user space. | ||
| 75 | * | ||
| 76 | * Returns number of bytes that could not be cleared. | ||
| 77 | * On success, this will be zero. | ||
| 78 | */ | ||
| 79 | extern int clear_user(void __user *mem, int len); | ||
| 80 | |||
| 81 | /* | ||
| 82 | * strlen_user: - Get the size of a string in user space. | ||
| 83 | * @str: The string to measure. | ||
| 84 | * @n: The maximum valid length | ||
| 85 | * | ||
| 86 | * Get the size of a NUL-terminated string in user space. | ||
| 87 | * | ||
| 88 | * Returns the size of the string INCLUDING the terminating NUL. | ||
| 89 | * On exception, returns 0. | ||
| 90 | * If the string is too long, returns a value greater than @n. | ||
| 91 | */ | ||
| 92 | extern int strnlen_user(const void __user *str, int len); | ||
| 93 | |||
| 94 | #endif | ||
