diff options
Diffstat (limited to 'arch/x86/include')
-rw-r--r-- | arch/x86/include/asm/uaccess.h | 35 | ||||
-rw-r--r-- | arch/x86/include/uapi/asm/shmbuf.h | 6 | ||||
-rw-r--r-- | arch/x86/include/uapi/asm/signal.h | 2 |
3 files changed, 9 insertions, 34 deletions
diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h index ac96f9b2d64b..f78e2b3501a1 100644 --- a/arch/x86/include/asm/uaccess.h +++ b/arch/x86/include/asm/uaccess.h @@ -12,35 +12,6 @@ #include <asm/smap.h> #include <asm/extable.h> -/* - * Test whether a block of memory is a valid user space address. - * Returns 0 if the range is valid, nonzero otherwise. - */ -static inline bool __chk_range_not_ok(unsigned long addr, unsigned long size, unsigned long limit) -{ - /* - * If we have used "sizeof()" for the size, - * we know it won't overflow the limit (but - * it might overflow the 'addr', so it's - * important to subtract the size from the - * limit, not add it to the address). - */ - if (__builtin_constant_p(size)) - return unlikely(addr > limit - size); - - /* Arbitrary sizes? Be careful about overflow */ - addr += size; - if (unlikely(addr < size)) - return true; - return unlikely(addr > limit); -} - -#define __range_not_ok(addr, size, limit) \ -({ \ - __chk_user_ptr(addr); \ - __chk_range_not_ok((unsigned long __force)(addr), size, limit); \ -}) - #ifdef CONFIG_DEBUG_ATOMIC_SLEEP static inline bool pagefault_disabled(void); # define WARN_ON_IN_IRQ() \ @@ -69,9 +40,11 @@ static inline bool pagefault_disabled(void); #define access_ok(addr, size) \ ({ \ WARN_ON_IN_IRQ(); \ - likely(!__range_not_ok(addr, size, TASK_SIZE_MAX)); \ + likely(__access_ok(addr, size)); \ }) +#include <asm-generic/access_ok.h> + extern int __get_user_1(void); extern int __get_user_2(void); extern int __get_user_4(void); @@ -524,8 +497,6 @@ do { \ unsafe_copy_loop(__ucu_dst, __ucu_src, __ucu_len, u8, label); \ } while (0) -#define HAVE_GET_KERNEL_NOFAULT - #ifdef CONFIG_CC_HAS_ASM_GOTO_OUTPUT #define __get_kernel_nofault(dst, src, type, err_label) \ __get_user_size(*((type *)(dst)), (__force type __user *)(src), \ diff --git a/arch/x86/include/uapi/asm/shmbuf.h b/arch/x86/include/uapi/asm/shmbuf.h index fce18eaa070c..13775bfdfee2 100644 --- a/arch/x86/include/uapi/asm/shmbuf.h +++ b/arch/x86/include/uapi/asm/shmbuf.h @@ -5,6 +5,10 @@ #if !defined(__x86_64__) || !defined(__ILP32__) #include <asm-generic/shmbuf.h> #else + +#include <asm/ipcbuf.h> +#include <asm/posix_types.h> + /* * The shmid64_ds structure for x86 architecture with x32 ABI. * @@ -15,7 +19,7 @@ struct shmid64_ds { struct ipc64_perm shm_perm; /* operation perms */ - size_t shm_segsz; /* size of segment (bytes) */ + __kernel_size_t shm_segsz; /* size of segment (bytes) */ __kernel_long_t shm_atime; /* last attach time */ __kernel_long_t shm_dtime; /* last detach time */ __kernel_long_t shm_ctime; /* last change time */ diff --git a/arch/x86/include/uapi/asm/signal.h b/arch/x86/include/uapi/asm/signal.h index 164a22a72984..777c3a0f4e23 100644 --- a/arch/x86/include/uapi/asm/signal.h +++ b/arch/x86/include/uapi/asm/signal.h @@ -104,7 +104,7 @@ struct sigaction { typedef struct sigaltstack { void __user *ss_sp; int ss_flags; - size_t ss_size; + __kernel_size_t ss_size; } stack_t; #endif /* __ASSEMBLY__ */ |