include/asm-x86/uaccess_32.h: checkpatch cleanups - formatting only
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Joe Perches
Ingo Molnar
Родитель
2d86e637d1
Коммит
b1fcec7f22
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@ -32,7 +32,7 @@
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#define get_fs() (current_thread_info()->addr_limit)
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#define set_fs(x) (current_thread_info()->addr_limit = (x))
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#define segment_eq(a,b) ((a).seg == (b).seg)
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#define segment_eq(a, b) ((a).seg == (b).seg)
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/*
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* movsl can be slow when source and dest are not both 8-byte aligned
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@ -43,7 +43,9 @@ extern struct movsl_mask {
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} ____cacheline_aligned_in_smp movsl_mask;
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#endif
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#define __addr_ok(addr) ((unsigned long __force)(addr) < (current_thread_info()->addr_limit.seg))
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#define __addr_ok(addr) \
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((unsigned long __force)(addr) < \
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(current_thread_info()->addr_limit.seg))
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/*
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* Test whether a block of memory is a valid user space address.
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@ -54,13 +56,16 @@ extern struct movsl_mask {
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*
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* This needs 33-bit arithmetic. We have a carry...
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*/
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#define __range_ok(addr,size) ({ \
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unsigned long flag,roksum; \
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__chk_user_ptr(addr); \
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asm("addl %3,%1 ; sbbl %0,%0; cmpl %1,%4; sbbl $0,%0" \
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:"=&r" (flag), "=r" (roksum) \
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:"1" (addr),"g" ((int)(size)),"rm" (current_thread_info()->addr_limit.seg)); \
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flag; })
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#define __range_ok(addr, size) \
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({ \
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unsigned long flag, roksum; \
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__chk_user_ptr(addr); \
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asm("addl %3,%1 ; sbbl %0,%0; cmpl %1,%4; sbbl $0,%0" \
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:"=&r" (flag), "=r" (roksum) \
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:"1" (addr), "g" ((int)(size)), \
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"rm" (current_thread_info()->addr_limit.seg)); \
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flag; \
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})
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/**
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* access_ok: - Checks if a user space pointer is valid
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@ -81,7 +86,7 @@ extern struct movsl_mask {
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* checks that the pointer is in the user space range - after calling
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* this function, memory access functions may still return -EFAULT.
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*/
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#define access_ok(type,addr,size) (likely(__range_ok(addr,size) == 0))
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#define access_ok(type, addr, size) (likely(__range_ok(addr, size) == 0))
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/*
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* The exception table consists of pairs of addresses: the first is the
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@ -96,8 +101,7 @@ extern struct movsl_mask {
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* on our cache or tlb entries.
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*/
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struct exception_table_entry
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{
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struct exception_table_entry {
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unsigned long insn, fixup;
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};
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@ -122,13 +126,15 @@ extern void __get_user_1(void);
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extern void __get_user_2(void);
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extern void __get_user_4(void);
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#define __get_user_x(size,ret,x,ptr) \
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__asm__ __volatile__("call __get_user_" #size \
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:"=a" (ret),"=d" (x) \
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:"0" (ptr))
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#define __get_user_x(size, ret, x, ptr) \
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asm volatile("call __get_user_" #size \
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:"=a" (ret),"=d" (x) \
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:"0" (ptr))
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/* Careful: we have to cast the result to the type of the pointer for sign reasons */
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/* Careful: we have to cast the result to the type of the pointer
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* for sign reasons */
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/**
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* get_user: - Get a simple variable from user space.
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* @x: Variable to store result.
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@ -146,15 +152,24 @@ extern void __get_user_4(void);
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* Returns zero on success, or -EFAULT on error.
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* On error, the variable @x is set to zero.
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*/
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#define get_user(x,ptr) \
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({ int __ret_gu; \
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#define get_user(x, ptr) \
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({ \
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int __ret_gu; \
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unsigned long __val_gu; \
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__chk_user_ptr(ptr); \
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switch(sizeof (*(ptr))) { \
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case 1: __get_user_x(1,__ret_gu,__val_gu,ptr); break; \
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case 2: __get_user_x(2,__ret_gu,__val_gu,ptr); break; \
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case 4: __get_user_x(4,__ret_gu,__val_gu,ptr); break; \
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default: __get_user_x(X,__ret_gu,__val_gu,ptr); break; \
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switch (sizeof(*(ptr))) { \
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case 1: \
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__get_user_x(1, __ret_gu, __val_gu, ptr); \
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break; \
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case 2: \
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__get_user_x(2, __ret_gu, __val_gu, ptr); \
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break; \
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case 4: \
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__get_user_x(4, __ret_gu, __val_gu, ptr); \
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break; \
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default: \
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__get_user_x(X, __ret_gu, __val_gu, ptr); \
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break; \
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} \
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(x) = (__typeof__(*(ptr)))__val_gu; \
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__ret_gu; \
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@ -171,11 +186,25 @@ extern void __put_user_2(void);
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extern void __put_user_4(void);
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extern void __put_user_8(void);
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#define __put_user_1(x, ptr) __asm__ __volatile__("call __put_user_1":"=a" (__ret_pu):"0" ((typeof(*(ptr)))(x)), "c" (ptr))
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#define __put_user_2(x, ptr) __asm__ __volatile__("call __put_user_2":"=a" (__ret_pu):"0" ((typeof(*(ptr)))(x)), "c" (ptr))
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#define __put_user_4(x, ptr) __asm__ __volatile__("call __put_user_4":"=a" (__ret_pu):"0" ((typeof(*(ptr)))(x)), "c" (ptr))
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#define __put_user_8(x, ptr) __asm__ __volatile__("call __put_user_8":"=a" (__ret_pu):"A" ((typeof(*(ptr)))(x)), "c" (ptr))
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#define __put_user_X(x, ptr) __asm__ __volatile__("call __put_user_X":"=a" (__ret_pu):"c" (ptr))
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#define __put_user_1(x, ptr) \
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asm volatile("call __put_user_1" : "=a" (__ret_pu) \
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: "0" ((typeof(*(ptr)))(x)), "c" (ptr))
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#define __put_user_2(x, ptr) \
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asm volatile("call __put_user_2" : "=a" (__ret_pu) \
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: "0" ((typeof(*(ptr)))(x)), "c" (ptr))
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#define __put_user_4(x, ptr) \
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asm volatile("call __put_user_4" : "=a" (__ret_pu) \
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: "0" ((typeof(*(ptr)))(x)), "c" (ptr))
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#define __put_user_8(x, ptr) \
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asm volatile("call __put_user_8" : "=a" (__ret_pu) \
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: "A" ((typeof(*(ptr)))(x)), "c" (ptr))
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#define __put_user_X(x, ptr) \
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asm volatile("call __put_user_X" : "=a" (__ret_pu) \
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: "c" (ptr))
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/**
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* put_user: - Write a simple value into user space.
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@ -195,32 +224,43 @@ extern void __put_user_8(void);
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*/
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#ifdef CONFIG_X86_WP_WORKS_OK
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#define put_user(x,ptr) \
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({ int __ret_pu; \
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#define put_user(x, ptr) \
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({ \
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int __ret_pu; \
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__typeof__(*(ptr)) __pu_val; \
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__chk_user_ptr(ptr); \
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__pu_val = x; \
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switch(sizeof(*(ptr))) { \
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case 1: __put_user_1(__pu_val, ptr); break; \
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case 2: __put_user_2(__pu_val, ptr); break; \
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case 4: __put_user_4(__pu_val, ptr); break; \
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case 8: __put_user_8(__pu_val, ptr); break; \
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default:__put_user_X(__pu_val, ptr); break; \
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switch (sizeof(*(ptr))) { \
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case 1: \
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__put_user_1(__pu_val, ptr); \
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break; \
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case 2: \
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__put_user_2(__pu_val, ptr); \
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break; \
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case 4: \
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__put_user_4(__pu_val, ptr); \
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break; \
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case 8: \
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__put_user_8(__pu_val, ptr); \
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break; \
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default: \
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__put_user_X(__pu_val, ptr); \
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break; \
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} \
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__ret_pu; \
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})
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#else
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#define put_user(x,ptr) \
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#define put_user(x, ptr) \
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({ \
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int __ret_pu; \
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__typeof__(*(ptr)) __pus_tmp = x; \
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__ret_pu=0; \
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if(unlikely(__copy_to_user_ll(ptr, &__pus_tmp, \
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sizeof(*(ptr))) != 0)) \
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__ret_pu=-EFAULT; \
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__ret_pu; \
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})
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int __ret_pu; \
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__typeof__(*(ptr))__pus_tmp = x; \
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__ret_pu = 0; \
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if (unlikely(__copy_to_user_ll(ptr, &__pus_tmp, \
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sizeof(*(ptr))) != 0)) \
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__ret_pu = -EFAULT; \
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__ret_pu; \
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})
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#endif
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@ -245,8 +285,8 @@ extern void __put_user_8(void);
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* Returns zero on success, or -EFAULT on error.
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* On error, the variable @x is set to zero.
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*/
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#define __get_user(x,ptr) \
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__get_user_nocheck((x),(ptr),sizeof(*(ptr)))
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#define __get_user(x, ptr) \
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__get_user_nocheck((x), (ptr), sizeof(*(ptr)))
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/**
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@ -268,54 +308,62 @@ extern void __put_user_8(void);
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*
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* Returns zero on success, or -EFAULT on error.
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*/
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#define __put_user(x,ptr) \
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__put_user_nocheck((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
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#define __put_user(x, ptr) \
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__put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
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#define __put_user_nocheck(x,ptr,size) \
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#define __put_user_nocheck(x, ptr, size) \
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({ \
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long __pu_err; \
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__put_user_size((x),(ptr),(size),__pu_err,-EFAULT); \
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__put_user_size((x), (ptr), (size), __pu_err, -EFAULT); \
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__pu_err; \
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})
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#define __put_user_u64(x, addr, err) \
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__asm__ __volatile__( \
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"1: movl %%eax,0(%2)\n" \
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"2: movl %%edx,4(%2)\n" \
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"3:\n" \
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".section .fixup,\"ax\"\n" \
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"4: movl %3,%0\n" \
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" jmp 3b\n" \
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".previous\n" \
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_ASM_EXTABLE(1b,4b) \
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_ASM_EXTABLE(2b,4b) \
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: "=r"(err) \
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: "A" (x), "r" (addr), "i"(-EFAULT), "0"(err))
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#define __put_user_u64(x, addr, err) \
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asm volatile("1: movl %%eax,0(%2)\n" \
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"2: movl %%edx,4(%2)\n" \
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"3:\n" \
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".section .fixup,\"ax\"\n" \
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"4: movl %3,%0\n" \
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" jmp 3b\n" \
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".previous\n" \
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_ASM_EXTABLE(1b, 4b) \
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_ASM_EXTABLE(2b, 4b) \
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: "=r" (err) \
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: "A" (x), "r" (addr), "i" (-EFAULT), "0" (err))
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#ifdef CONFIG_X86_WP_WORKS_OK
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#define __put_user_size(x,ptr,size,retval,errret) \
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#define __put_user_size(x, ptr, size, retval, errret) \
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do { \
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retval = 0; \
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__chk_user_ptr(ptr); \
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switch (size) { \
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case 1: __put_user_asm(x,ptr,retval,"b","b","iq",errret);break; \
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case 2: __put_user_asm(x,ptr,retval,"w","w","ir",errret);break; \
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case 4: __put_user_asm(x,ptr,retval,"l","","ir",errret); break; \
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case 8: __put_user_u64((__typeof__(*ptr))(x),ptr,retval); break;\
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default: __put_user_bad(); \
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case 1: \
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__put_user_asm(x, ptr, retval, "b", "b", "iq", errret); \
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break; \
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case 2: \
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__put_user_asm(x, ptr, retval, "w", "w", "ir", errret); \
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break; \
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case 4: \
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__put_user_asm(x, ptr, retval, "l", "", "ir", errret); \
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break; \
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case 8: \
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__put_user_u64((__typeof__(*ptr))(x), ptr, retval); \
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break; \
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default: \
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__put_user_bad(); \
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} \
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} while (0)
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#else
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#define __put_user_size(x,ptr,size,retval,errret) \
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#define __put_user_size(x, ptr, size, retval, errret) \
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do { \
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__typeof__(*(ptr)) __pus_tmp = x; \
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__typeof__(*(ptr))__pus_tmp = x; \
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retval = 0; \
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\
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if(unlikely(__copy_to_user_ll(ptr, &__pus_tmp, size) != 0)) \
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if (unlikely(__copy_to_user_ll(ptr, &__pus_tmp, size) != 0)) \
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retval = errret; \
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} while (0)
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@ -329,65 +377,70 @@ struct __large_struct { unsigned long buf[100]; };
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* aliasing issues.
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*/
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#define __put_user_asm(x, addr, err, itype, rtype, ltype, errret) \
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__asm__ __volatile__( \
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"1: mov"itype" %"rtype"1,%2\n" \
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"2:\n" \
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".section .fixup,\"ax\"\n" \
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"3: movl %3,%0\n" \
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" jmp 2b\n" \
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".previous\n" \
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_ASM_EXTABLE(1b,3b) \
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: "=r"(err) \
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: ltype (x), "m"(__m(addr)), "i"(errret), "0"(err))
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asm volatile("1: mov"itype" %"rtype"1,%2\n" \
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"2:\n" \
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".section .fixup,\"ax\"\n" \
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"3: movl %3,%0\n" \
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" jmp 2b\n" \
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".previous\n" \
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_ASM_EXTABLE(1b, 3b) \
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: "=r"(err) \
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: ltype (x), "m" (__m(addr)), "i" (errret), "0" (err))
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#define __get_user_nocheck(x,ptr,size) \
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({ \
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long __gu_err; \
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unsigned long __gu_val; \
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__get_user_size(__gu_val,(ptr),(size),__gu_err,-EFAULT);\
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(x) = (__typeof__(*(ptr)))__gu_val; \
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||||
__gu_err; \
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#define __get_user_nocheck(x, ptr, size) \
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({ \
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long __gu_err; \
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unsigned long __gu_val; \
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__get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT); \
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(x) = (__typeof__(*(ptr)))__gu_val; \
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__gu_err; \
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})
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|
||||
extern long __get_user_bad(void);
|
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#define __get_user_size(x,ptr,size,retval,errret) \
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#define __get_user_size(x, ptr, size, retval, errret) \
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do { \
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retval = 0; \
|
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__chk_user_ptr(ptr); \
|
||||
switch (size) { \
|
||||
case 1: __get_user_asm(x,ptr,retval,"b","b","=q",errret);break; \
|
||||
case 2: __get_user_asm(x,ptr,retval,"w","w","=r",errret);break; \
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case 4: __get_user_asm(x,ptr,retval,"l","","=r",errret);break; \
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default: (x) = __get_user_bad(); \
|
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case 1: \
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__get_user_asm(x, ptr, retval, "b", "b", "=q", errret); \
|
||||
break; \
|
||||
case 2: \
|
||||
__get_user_asm(x, ptr, retval, "w", "w", "=r", errret); \
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||||
break; \
|
||||
case 4: \
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||||
__get_user_asm(x, ptr, retval, "l", "", "=r", errret); \
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break; \
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||||
default: \
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||||
(x) = __get_user_bad(); \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
#define __get_user_asm(x, addr, err, itype, rtype, ltype, errret) \
|
||||
__asm__ __volatile__( \
|
||||
"1: mov"itype" %2,%"rtype"1\n" \
|
||||
"2:\n" \
|
||||
".section .fixup,\"ax\"\n" \
|
||||
"3: movl %3,%0\n" \
|
||||
" xor"itype" %"rtype"1,%"rtype"1\n" \
|
||||
" jmp 2b\n" \
|
||||
".previous\n" \
|
||||
_ASM_EXTABLE(1b,3b) \
|
||||
: "=r"(err), ltype (x) \
|
||||
: "m"(__m(addr)), "i"(errret), "0"(err))
|
||||
asm volatile("1: mov"itype" %2,%"rtype"1\n" \
|
||||
"2:\n" \
|
||||
".section .fixup,\"ax\"\n" \
|
||||
"3: movl %3,%0\n" \
|
||||
" xor"itype" %"rtype"1,%"rtype"1\n" \
|
||||
" jmp 2b\n" \
|
||||
".previous\n" \
|
||||
_ASM_EXTABLE(1b, 3b) \
|
||||
: "=r" (err), ltype (x) \
|
||||
: "m" (__m(addr)), "i" (errret), "0" (err))
|
||||
|
||||
|
||||
unsigned long __must_check __copy_to_user_ll(void __user *to,
|
||||
const void *from, unsigned long n);
|
||||
unsigned long __must_check __copy_from_user_ll(void *to,
|
||||
const void __user *from, unsigned long n);
|
||||
unsigned long __must_check __copy_from_user_ll_nozero(void *to,
|
||||
const void __user *from, unsigned long n);
|
||||
unsigned long __must_check __copy_from_user_ll_nocache(void *to,
|
||||
const void __user *from, unsigned long n);
|
||||
unsigned long __must_check __copy_from_user_ll_nocache_nozero(void *to,
|
||||
const void __user *from, unsigned long n);
|
||||
unsigned long __must_check __copy_to_user_ll
|
||||
(void __user *to, const void *from, unsigned long n);
|
||||
unsigned long __must_check __copy_from_user_ll
|
||||
(void *to, const void __user *from, unsigned long n);
|
||||
unsigned long __must_check __copy_from_user_ll_nozero
|
||||
(void *to, const void __user *from, unsigned long n);
|
||||
unsigned long __must_check __copy_from_user_ll_nocache
|
||||
(void *to, const void __user *from, unsigned long n);
|
||||
unsigned long __must_check __copy_from_user_ll_nocache_nozero
|
||||
(void *to, const void __user *from, unsigned long n);
|
||||
|
||||
/**
|
||||
* __copy_to_user_inatomic: - Copy a block of data into user space, with less checking.
|
||||
|
|
@ -416,13 +469,16 @@ __copy_to_user_inatomic(void __user *to, const void *from, unsigned long n)
|
|||
|
||||
switch (n) {
|
||||
case 1:
|
||||
__put_user_size(*(u8 *)from, (u8 __user *)to, 1, ret, 1);
|
||||
__put_user_size(*(u8 *)from, (u8 __user *)to,
|
||||
1, ret, 1);
|
||||
return ret;
|
||||
case 2:
|
||||
__put_user_size(*(u16 *)from, (u16 __user *)to, 2, ret, 2);
|
||||
__put_user_size(*(u16 *)from, (u16 __user *)to,
|
||||
2, ret, 2);
|
||||
return ret;
|
||||
case 4:
|
||||
__put_user_size(*(u32 *)from, (u32 __user *)to, 4, ret, 4);
|
||||
__put_user_size(*(u32 *)from, (u32 __user *)to,
|
||||
4, ret, 4);
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
|
@ -545,19 +601,21 @@ static __always_inline unsigned long __copy_from_user_nocache(void *to,
|
|||
}
|
||||
|
||||
static __always_inline unsigned long
|
||||
__copy_from_user_inatomic_nocache(void *to, const void __user *from, unsigned long n)
|
||||
__copy_from_user_inatomic_nocache(void *to, const void __user *from,
|
||||
unsigned long n)
|
||||
{
|
||||
return __copy_from_user_ll_nocache_nozero(to, from, n);
|
||||
}
|
||||
|
||||
unsigned long __must_check copy_to_user(void __user *to,
|
||||
const void *from, unsigned long n);
|
||||
const void *from, unsigned long n);
|
||||
unsigned long __must_check copy_from_user(void *to,
|
||||
const void __user *from, unsigned long n);
|
||||
const void __user *from,
|
||||
unsigned long n);
|
||||
long __must_check strncpy_from_user(char *dst, const char __user *src,
|
||||
long count);
|
||||
long count);
|
||||
long __must_check __strncpy_from_user(char *dst,
|
||||
const char __user *src, long count);
|
||||
const char __user *src, long count);
|
||||
|
||||
/**
|
||||
* strlen_user: - Get the size of a string in user space.
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче