diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/parisc/include/asm/socket.h | 11 | ||||
| -rw-r--r-- | arch/parisc/include/asm/uaccess.h | 46 | ||||
| -rw-r--r-- | arch/parisc/include/uapi/asm/socket.h | 11 | ||||
| -rw-r--r-- | arch/parisc/lib/memcpy.c | 6 | ||||
| -rw-r--r-- | arch/parisc/mm/fault.c | 22 |
5 files changed, 41 insertions, 55 deletions
diff --git a/arch/parisc/include/asm/socket.h b/arch/parisc/include/asm/socket.h new file mode 100644 index 000000000000..748016cb122d --- /dev/null +++ b/arch/parisc/include/asm/socket.h @@ -0,0 +1,11 @@ +#ifndef _ASM_SOCKET_H +#define _ASM_SOCKET_H + +#include <uapi/asm/socket.h> + +/* O_NONBLOCK clashes with the bits used for socket types. Therefore we + * have to define SOCK_NONBLOCK to a different value here. + */ +#define SOCK_NONBLOCK 0x40000000 + +#endif /* _ASM_SOCKET_H */ diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h index 63f4dd0b49c2..4006964d8e12 100644 --- a/arch/parisc/include/asm/uaccess.h +++ b/arch/parisc/include/asm/uaccess.h @@ -4,14 +4,11 @@ /* * User space memory access functions */ -#include <asm/processor.h> #include <asm/page.h> #include <asm/cache.h> #include <asm/errno.h> #include <asm-generic/uaccess-unaligned.h> -#include <linux/sched.h> - #define VERIFY_READ 0 #define VERIFY_WRITE 1 @@ -36,43 +33,12 @@ extern int __get_user_bad(void); extern int __put_kernel_bad(void); extern int __put_user_bad(void); - -/* - * Test whether a block of memory is a valid user space address. - * Returns 0 if the range is valid, nonzero otherwise. - */ -static inline int __range_not_ok(unsigned long addr, unsigned long size, - unsigned long limit) +static inline long access_ok(int type, const void __user * addr, + unsigned long size) { - unsigned long __newaddr = addr + size; - return (__newaddr < addr || __newaddr > limit || size > limit); + return 1; } -/** - * access_ok: - Checks if a user space pointer is valid - * @type: Type of access: %VERIFY_READ or %VERIFY_WRITE. Note that - * %VERIFY_WRITE is a superset of %VERIFY_READ - if it is safe - * to write to a block, it is always safe to read from it. - * @addr: User space pointer to start of block to check - * @size: Size of block to check - * - * Context: User context only. This function may sleep. - * - * Checks if a pointer to a block of memory in user space is valid. - * - * Returns true (nonzero) if the memory block may be valid, false (zero) - * if it is definitely invalid. - * - * Note that, depending on architecture, this function probably just - * checks that the pointer is in the user space range - after calling - * this function, memory access functions may still return -EFAULT. - */ -#define access_ok(type, addr, size) \ -( __chk_user_ptr(addr), \ - !__range_not_ok((unsigned long) (__force void *) (addr), \ - size, user_addr_max()) \ -) - #define put_user __put_user #define get_user __get_user @@ -253,11 +219,7 @@ extern long lstrnlen_user(const char __user *,long); /* * Complex access routines -- macros */ -#ifdef CONFIG_COMPAT -#define user_addr_max() (TASK_SIZE) -#else -#define user_addr_max() (DEFAULT_TASK_SIZE) -#endif +#define user_addr_max() (~0UL) #define strnlen_user lstrnlen_user #define strlen_user(str) lstrnlen_user(str, 0x7fffffffL) diff --git a/arch/parisc/include/uapi/asm/socket.h b/arch/parisc/include/uapi/asm/socket.h index 7c614d01f1fa..f33113a6141e 100644 --- a/arch/parisc/include/uapi/asm/socket.h +++ b/arch/parisc/include/uapi/asm/socket.h @@ -1,5 +1,5 @@ -#ifndef _ASM_SOCKET_H -#define _ASM_SOCKET_H +#ifndef _UAPI_ASM_SOCKET_H +#define _UAPI_ASM_SOCKET_H #include <asm/sockios.h> @@ -77,9 +77,4 @@ #define SO_MAX_PACING_RATE 0x4048 -/* O_NONBLOCK clashes with the bits used for socket types. Therefore we - * have to define SOCK_NONBLOCK to a different value here. - */ -#define SOCK_NONBLOCK 0x40000000 - -#endif /* _ASM_SOCKET_H */ +#endif /* _UAPI_ASM_SOCKET_H */ diff --git a/arch/parisc/lib/memcpy.c b/arch/parisc/lib/memcpy.c index b5507ec06b84..413dc1769299 100644 --- a/arch/parisc/lib/memcpy.c +++ b/arch/parisc/lib/memcpy.c @@ -161,7 +161,7 @@ static inline void prefetch_dst(const void *addr) /* Copy from a not-aligned src to an aligned dst, using shifts. Handles 4 words * per loop. This code is derived from glibc. */ -static inline unsigned long copy_dstaligned(unsigned long dst, +static noinline unsigned long copy_dstaligned(unsigned long dst, unsigned long src, unsigned long len) { /* gcc complains that a2 and a3 may be uninitialized, but actually @@ -276,7 +276,7 @@ handle_store_error: /* Returns PA_MEMCPY_OK, PA_MEMCPY_LOAD_ERROR or PA_MEMCPY_STORE_ERROR. * In case of an access fault the faulty address can be read from the per_cpu * exception data struct. */ -static unsigned long pa_memcpy_internal(void *dstp, const void *srcp, +static noinline unsigned long pa_memcpy_internal(void *dstp, const void *srcp, unsigned long len) { register unsigned long src, dst, t1, t2, t3; @@ -529,7 +529,7 @@ long probe_kernel_read(void *dst, const void *src, size_t size) { unsigned long addr = (unsigned long)src; - if (size < 0 || addr < PAGE_SIZE) + if (addr < PAGE_SIZE) return -EFAULT; /* check for I/O space F_EXTEND(0xfff00000) access as well? */ diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c index 7584a5df0fa4..9d08c71a967e 100644 --- a/arch/parisc/mm/fault.c +++ b/arch/parisc/mm/fault.c @@ -282,16 +282,34 @@ bad_area: #endif switch (code) { case 15: /* Data TLB miss fault/Data page fault */ + /* send SIGSEGV when outside of vma */ + if (!vma || + address < vma->vm_start || address > vma->vm_end) { + si.si_signo = SIGSEGV; + si.si_code = SEGV_MAPERR; + break; + } + + /* send SIGSEGV for wrong permissions */ + if ((vma->vm_flags & acc_type) != acc_type) { + si.si_signo = SIGSEGV; + si.si_code = SEGV_ACCERR; + break; + } + + /* probably address is outside of mapped file */ + /* fall through */ case 17: /* NA data TLB miss / page fault */ case 18: /* Unaligned access - PCXS only */ si.si_signo = SIGBUS; - si.si_code = BUS_ADRERR; + si.si_code = (code == 18) ? BUS_ADRALN : BUS_ADRERR; break; case 16: /* Non-access instruction TLB miss fault */ case 26: /* PCXL: Data memory access rights trap */ default: si.si_signo = SIGSEGV; - si.si_code = SEGV_MAPERR; + si.si_code = (code == 26) ? SEGV_ACCERR : SEGV_MAPERR; + break; } si.si_errno = 0; si.si_addr = (void __user *) address; |