diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/kernel.h | 1 | ||||
| -rw-r--r-- | include/linux/string.h | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index b4d2f09081..ab713f20e9 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -33,6 +33,7 @@ #define S64_MIN ((s64)(-S64_MAX - 1)) #define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a) - 1) +#define ALIGN_DOWN(x, a) ALIGN((x) - ((a) - 1), (a)) #define __ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask)) #define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a))) #define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0) diff --git a/include/linux/string.h b/include/linux/string.h index 5df8c50e57..ed4eeb5519 100644 --- a/include/linux/string.h +++ b/include/linux/string.h @@ -80,6 +80,9 @@ extern __kernel_size_t strnlen(const char *,__kernel_size_t); #ifndef __HAVE_ARCH_STRDUP extern char * strdup(const char *); #endif +#ifndef __HAVE_ARCH_STRNDUP +extern char *strndup(const char *, size_t); +#endif #ifndef __HAVE_ARCH_STRSWAB extern char * strswab(const char *); #endif |