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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Browse Source 
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic: add dummy pgprot_noncached()
  lib/checksum.c: fix endianess bug
  asm-generic: hook up new system calls
  asm-generic: list Arnd as asm-generic maintainer
  asm-generic: drop HARDIRQ_BITS definition from hardirq.h
  asm-generic: uaccess: fix up local access_ok() usage
  asm-generic: uaccess: add missing access_ok() check to strnlen_user()
This commit is contained in:
Linus Torvalds 2009-06-23 11:34:24 -07:00
commit defe910483
6 changed files with 35 additions and 21 deletions
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8
MAINTAINERS
View File

@ -2482,6 +2482,14 @@ F: drivers/net/wan/pc300too.c
F: drivers/net/wan/pci200syn.c
F: drivers/net/wan/wanxl*
GENERIC INCLUDE/ASM HEADER FILES
P: Arnd Bergmann
M: arnd@arndb.de
L: linux-arch@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git
S: Maintained
F: include/asm-generic
GFS2 FILE SYSTEM
P: Steven Whitehouse
M: swhiteho@redhat.com

13
include/asm-generic/hardirq.h
View File

@ -11,19 +11,6 @@ typedef struct {
#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
#ifndef HARDIRQ_BITS
#define HARDIRQ_BITS 8
#endif
/*
* The hardirq mask has to be large enough to have
* space for potentially all IRQ sources in the system
* nesting on a single CPU:
*/
#if (1 << HARDIRQ_BITS) < NR_IRQS
# error HARDIRQ_BITS is too low!
#endif
#ifndef ack_bad_irq
static inline void ack_bad_irq(unsigned int irq)
{

4
include/asm-generic/pgtable.h
View File

@ -129,6 +129,10 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addres
#define move_pte(pte, prot, old_addr, new_addr) (pte)
#endif
#ifndef pgprot_noncached
#define pgprot_noncached(prot) (prot)
#endif
#ifndef pgprot_writecombine
#define pgprot_writecombine pgprot_noncached
#endif

14
include/asm-generic/uaccess.h
View File

@ -163,7 +163,7 @@ static inline __must_check long __copy_to_user(void __user *to,
#define put_user(x, ptr) \
({ \
might_sleep(); \
__access_ok(ptr, sizeof (*ptr)) ? \
access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)) ? \
__put_user(x, ptr) : \
-EFAULT; \
})
@ -219,7 +219,7 @@ extern int __put_user_bad(void) __attribute__((noreturn));
#define get_user(x, ptr) \
({ \
might_sleep(); \
__access_ok(ptr, sizeof (*ptr)) ? \
access_ok(VERIFY_READ, ptr, sizeof(*ptr)) ? \
__get_user(x, ptr) : \
-EFAULT; \
})
@ -244,7 +244,7 @@ static inline long copy_from_user(void *to,
const void __user * from, unsigned long n)
{
might_sleep();
if (__access_ok(from, n))
if (access_ok(VERIFY_READ, from, n))
return __copy_from_user(to, from, n);
else
return n;
@ -254,7 +254,7 @@ static inline long copy_to_user(void __user *to,
const void *from, unsigned long n)
{
might_sleep();
if (__access_ok(to, n))
if (access_ok(VERIFY_WRITE, to, n))
return __copy_to_user(to, from, n);
else
return n;
@ -278,7 +278,7 @@ __strncpy_from_user(char *dst, const char __user *src, long count)
static inline long
strncpy_from_user(char *dst, const char __user *src, long count)
{
if (!__access_ok(src, 1))
if (!access_ok(VERIFY_READ, src, 1))
return -EFAULT;
return __strncpy_from_user(dst, src, count);
}
@ -291,6 +291,8 @@ strncpy_from_user(char *dst, const char __user *src, long count)
#ifndef strnlen_user
static inline long strnlen_user(const char __user *src, long n)
{
if (!access_ok(VERIFY_READ, src, 1))
return 0;
return strlen((void * __force)src) + 1;
}
#endif
@ -316,7 +318,7 @@ static inline __must_check unsigned long
clear_user(void __user *to, unsigned long n)
{
might_sleep();
if (!__access_ok(to, n))
if (!access_ok(VERIFY_WRITE, to, n))
return n;
return __clear_user(to, n);

7
include/asm-generic/unistd.h
View File

@ -618,8 +618,13 @@ __SYSCALL(__NR_migrate_pages, sys_migrate_pages)
__SYSCALL(__NR_move_pages, sys_move_pages)
#endif
#define __NR_rt_tgsigqueueinfo 240
__SYSCALL(__NR_rt_tgsigqueueinfo, sys_rt_tgsigqueueinfo)
#define __NR_perf_counter_open 241
__SYSCALL(__NR_perf_counter_open, sys_perf_counter_open)
#undef __NR_syscalls
#define __NR_syscalls 240
#define __NR_syscalls 242
/*
* All syscalls below here should go away really,

10
lib/checksum.c
View File

@ -55,7 +55,11 @@ static unsigned int do_csum(const unsigned char *buff, int len)
goto out;
odd = 1 & (unsigned long) buff;
if (odd) {
#ifdef __LITTLE_ENDIAN
result = *buff;
#else
result += (*buff << 8);
#endif
len--;
buff++;
}
@ -71,7 +75,7 @@ static unsigned int do_csum(const unsigned char *buff, int len)
if (count) {
unsigned long carry = 0;
do {
unsigned long w = *(unsigned long *) buff;
unsigned long w = *(unsigned int *) buff;
count--;
buff += 4;
result += carry;
@ -87,7 +91,11 @@ static unsigned int do_csum(const unsigned char *buff, int len)
}
}
if (len & 1)
#ifdef __LITTLE_ENDIAN
result += *buff;
#else
result += (*buff << 8);
#endif
result = from32to16(result);
if (odd)
result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);