diff options
| author | David S. Miller <davem@davemloft.net> | 2012-05-23 19:56:06 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-24 13:04:24 -0700 |
| commit | 35c9646062eba15351c6d64ea0c02176e5cb66ac (patch) | |
| tree | 46b29964dfbf21e6757b5ab629c6f748897d34e5 /arch/sparc/include/asm/uaccess.h | |
| parent | 4efcac3a244de86593a82ca4ed945e839eb4c5af (diff) | |
sparc: Increase portability of strncpy_from_user() implementation.
Hide details of maximum user address calculation in a new
asm/uaccess.h interface named user_addr_max().
Provide little-endian implementation in find_zero(), which should work
but can probably be improved.
Abstrace alignment check behind IS_UNALIGNED() macro.
Kill double-semicolon, noticed by David Howells.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include/asm/uaccess.h')
| -rw-r--r-- | arch/sparc/include/asm/uaccess.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/uaccess.h b/arch/sparc/include/asm/uaccess.h index 42a28cfd941..20c2acb0633 100644 --- a/arch/sparc/include/asm/uaccess.h +++ b/arch/sparc/include/asm/uaccess.h @@ -6,6 +6,9 @@ #include <asm/uaccess_32.h> #endif +#define user_addr_max() \ + (segment_eq(get_fs(), USER_DS) ? STACK_TOP : ~0UL) + extern long strncpy_from_user(char *dest, const char __user *src, long count); #endif |