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-rw-r--r--ANDROID_3.4.5/include/asm-generic/uaccess.h334
1 files changed, 0 insertions, 334 deletions
diff --git a/ANDROID_3.4.5/include/asm-generic/uaccess.h b/ANDROID_3.4.5/include/asm-generic/uaccess.h
deleted file mode 100644
index 9788568f..00000000
--- a/ANDROID_3.4.5/include/asm-generic/uaccess.h
+++ /dev/null
@@ -1,334 +0,0 @@
-#ifndef __ASM_GENERIC_UACCESS_H
-#define __ASM_GENERIC_UACCESS_H
-
-/*
- * User space memory access functions, these should work
- * on a ny machine that has kernel and user data in the same
- * address space, e.g. all NOMMU machines.
- */
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-
-#include <asm/segment.h>
-
-#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
-
-#ifndef KERNEL_DS
-#define KERNEL_DS MAKE_MM_SEG(~0UL)
-#endif
-
-#ifndef USER_DS
-#define USER_DS MAKE_MM_SEG(TASK_SIZE - 1)
-#endif
-
-#ifndef get_fs
-#define get_ds() (KERNEL_DS)
-#define get_fs() (current_thread_info()->addr_limit)
-
-static inline void set_fs(mm_segment_t fs)
-{
- current_thread_info()->addr_limit = fs;
-}
-#endif
-
-#define segment_eq(a, b) ((a).seg == (b).seg)
-
-#define VERIFY_READ 0
-#define VERIFY_WRITE 1
-
-#define access_ok(type, addr, size) __access_ok((unsigned long)(addr),(size))
-
-/*
- * The architecture should really override this if possible, at least
- * doing a check on the get_fs()
- */
-#ifndef __access_ok
-static inline int __access_ok(unsigned long addr, unsigned long size)
-{
- return 1;
-}
-#endif
-
-/*
- * The exception table consists of pairs of addresses: the first is the
- * address of an instruction that is allowed to fault, and the second is
- * the address at which the program should continue. No registers are
- * modified, so it is entirely up to the continuation code to figure out
- * what to do.
- *
- * All the routines below use bits of fixup code that are out of line
- * with the main instruction path. This means when everything is well,
- * we don't even have to jump over them. Further, they do not intrude
- * on our cache or tlb entries.
- */
-
-struct exception_table_entry
-{
- unsigned long insn, fixup;
-};
-
-/* Returns 0 if exception not found and fixup otherwise. */
-extern unsigned long search_exception_table(unsigned long);
-
-/*
- * architectures with an MMU should override these two
- */
-#ifndef __copy_from_user
-static inline __must_check long __copy_from_user(void *to,
- const void __user * from, unsigned long n)
-{
- if (__builtin_constant_p(n)) {
- switch(n) {
- case 1:
- *(u8 *)to = *(u8 __force *)from;
- return 0;
- case 2:
- *(u16 *)to = *(u16 __force *)from;
- return 0;
- case 4:
- *(u32 *)to = *(u32 __force *)from;
- return 0;
-#ifdef CONFIG_64BIT
- case 8:
- *(u64 *)to = *(u64 __force *)from;
- return 0;
-#endif
- default:
- break;
- }
- }
-
- memcpy(to, (const void __force *)from, n);
- return 0;
-}
-#endif
-
-#ifndef __copy_to_user
-static inline __must_check long __copy_to_user(void __user *to,
- const void *from, unsigned long n)
-{
- if (__builtin_constant_p(n)) {
- switch(n) {
- case 1:
- *(u8 __force *)to = *(u8 *)from;
- return 0;
- case 2:
- *(u16 __force *)to = *(u16 *)from;
- return 0;
- case 4:
- *(u32 __force *)to = *(u32 *)from;
- return 0;
-#ifdef CONFIG_64BIT
- case 8:
- *(u64 __force *)to = *(u64 *)from;
- return 0;
-#endif
- default:
- break;
- }
- }
-
- memcpy((void __force *)to, from, n);
- return 0;
-}
-#endif
-
-/*
- * These are the main single-value transfer routines. They automatically
- * use the right size if we just have the right pointer type.
- * This version just falls back to copy_{from,to}_user, which should
- * provide a fast-path for small values.
- */
-#define __put_user(x, ptr) \
-({ \
- __typeof__(*(ptr)) __x = (x); \
- int __pu_err = -EFAULT; \
- __chk_user_ptr(ptr); \
- switch (sizeof (*(ptr))) { \
- case 1: \
- case 2: \
- case 4: \
- case 8: \
- __pu_err = __put_user_fn(sizeof (*(ptr)), \
- ptr, &__x); \
- break; \
- default: \
- __put_user_bad(); \
- break; \
- } \
- __pu_err; \
-})
-
-#define put_user(x, ptr) \
-({ \
- might_sleep(); \
- access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)) ? \
- __put_user(x, ptr) : \
- -EFAULT; \
-})
-
-static inline int __put_user_fn(size_t size, void __user *ptr, void *x)
-{
- size = __copy_to_user(ptr, x, size);
- return size ? -EFAULT : size;
-}
-
-extern int __put_user_bad(void) __attribute__((noreturn));
-
-#define __get_user(x, ptr) \
-({ \
- int __gu_err = -EFAULT; \
- __chk_user_ptr(ptr); \
- switch (sizeof(*(ptr))) { \
- case 1: { \
- unsigned char __x; \
- __gu_err = __get_user_fn(sizeof (*(ptr)), \
- ptr, &__x); \
- (x) = *(__force __typeof__(*(ptr)) *) &__x; \
- break; \
- }; \
- case 2: { \
- unsigned short __x; \
- __gu_err = __get_user_fn(sizeof (*(ptr)), \
- ptr, &__x); \
- (x) = *(__force __typeof__(*(ptr)) *) &__x; \
- break; \
- }; \
- case 4: { \
- unsigned int __x; \
- __gu_err = __get_user_fn(sizeof (*(ptr)), \
- ptr, &__x); \
- (x) = *(__force __typeof__(*(ptr)) *) &__x; \
- break; \
- }; \
- case 8: { \
- unsigned long long __x; \
- __gu_err = __get_user_fn(sizeof (*(ptr)), \
- ptr, &__x); \
- (x) = *(__force __typeof__(*(ptr)) *) &__x; \
- break; \
- }; \
- default: \
- __get_user_bad(); \
- break; \
- } \
- __gu_err; \
-})
-
-#define get_user(x, ptr) \
-({ \
- might_sleep(); \
- access_ok(VERIFY_READ, ptr, sizeof(*ptr)) ? \
- __get_user(x, ptr) : \
- -EFAULT; \
-})
-
-static inline int __get_user_fn(size_t size, const void __user *ptr, void *x)
-{
- size = __copy_from_user(x, ptr, size);
- return size ? -EFAULT : size;
-}
-
-extern int __get_user_bad(void) __attribute__((noreturn));
-
-#ifndef __copy_from_user_inatomic
-#define __copy_from_user_inatomic __copy_from_user
-#endif
-
-#ifndef __copy_to_user_inatomic
-#define __copy_to_user_inatomic __copy_to_user
-#endif
-
-static inline long copy_from_user(void *to,
- const void __user * from, unsigned long n)
-{
- might_sleep();
- if (access_ok(VERIFY_READ, from, n))
- return __copy_from_user(to, from, n);
- else
- return n;
-}
-
-static inline long copy_to_user(void __user *to,
- const void *from, unsigned long n)
-{
- might_sleep();
- if (access_ok(VERIFY_WRITE, to, n))
- return __copy_to_user(to, from, n);
- else
- return n;
-}
-
-/*
- * Copy a null terminated string from userspace.
- */
-#ifndef __strncpy_from_user
-static inline long
-__strncpy_from_user(char *dst, const char __user *src, long count)
-{
- char *tmp;
- strncpy(dst, (const char __force *)src, count);
- for (tmp = dst; *tmp && count > 0; tmp++, count--)
- ;
- return (tmp - dst);
-}
-#endif
-
-static inline long
-strncpy_from_user(char *dst, const char __user *src, long count)
-{
- if (!access_ok(VERIFY_READ, src, 1))
- return -EFAULT;
- return __strncpy_from_user(dst, src, count);
-}
-
-/*
- * Return the size of a string (including the ending 0)
- *
- * Return 0 on exception, a value greater than N if too long
- */
-#ifndef __strnlen_user
-#define __strnlen_user(s, n) (strnlen((s), (n)) + 1)
-#endif
-
-/*
- * Unlike strnlen, strnlen_user includes the nul terminator in
- * its returned count. Callers should check for a returned value
- * greater than N as an indication the string is too long.
- */
-static inline long strnlen_user(const char __user *src, long n)
-{
- if (!access_ok(VERIFY_READ, src, 1))
- return 0;
- return __strnlen_user(src, n);
-}
-
-static inline long strlen_user(const char __user *src)
-{
- return strnlen_user(src, 32767);
-}
-
-/*
- * Zero Userspace
- */
-#ifndef __clear_user
-static inline __must_check unsigned long
-__clear_user(void __user *to, unsigned long n)
-{
- memset((void __force *)to, 0, n);
- return 0;
-}
-#endif
-
-static inline __must_check unsigned long
-clear_user(void __user *to, unsigned long n)
-{
- might_sleep();
- if (!access_ok(VERIFY_WRITE, to, n))
- return n;
-
- return __clear_user(to, n);
-}
-
-#endif /* __ASM_GENERIC_UACCESS_H */
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