diff options
Diffstat (limited to 'sys/compat/linuxkpi/common/include/linux/string.h')
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/string.h | 63 |
1 files changed, 61 insertions, 2 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/string.h b/sys/compat/linuxkpi/common/include/linux/string.h index 20c3729aaf12..f7b64560d254 100644 --- a/sys/compat/linuxkpi/common/include/linux/string.h +++ b/sys/compat/linuxkpi/common/include/linux/string.h @@ -25,8 +25,6 @@ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * $FreeBSD$ */ #ifndef _LINUXKPI_LINUX_STRING_H_ #define _LINUXKPI_LINUX_STRING_H_ @@ -39,6 +37,7 @@ #include <linux/uaccess.h> #include <linux/err.h> #include <linux/bitops.h> /* for BITS_PER_LONG */ +#include <linux/overflow.h> #include <linux/stdarg.h> #include <sys/libkern.h> @@ -99,6 +98,18 @@ kmemdup(const void *src, size_t len, gfp_t gfp) return (dst); } +/* See slab.h for kvmalloc/kvfree(). */ +static inline void * +kvmemdup(const void *src, size_t len, gfp_t gfp) +{ + void *dst; + + dst = kvmalloc(len, gfp); + if (dst != NULL) + memcpy(dst, src, len); + return (dst); +} + static inline char * strndup_user(const char __user *ustr, long n) { @@ -150,6 +161,24 @@ skip_spaces(const char *str) return (__DECONST(char *, str)); } +/* + * This function trims whitespaces at the end of a string and returns a pointer + * to the first non-whitespace character. + */ +static inline char * +strim(char *str) +{ + char *end; + + end = str + strlen(str); + while (end >= str && (*end == '\0' || isspace(*end))) { + *end = '\0'; + end--; + } + + return (skip_spaces(str)); +} + static inline void * memchr_inv(const void *start, int c, size_t length) { @@ -216,6 +245,21 @@ strscpy_pad(char* dst, const char* src, size_t len) return (strscpy(dst, src, len)); } +static inline char * +strnchr(const char *cp, size_t n, int ch) +{ + char *p; + + for (p = __DECONST(char *, cp); n--; ++p) { + if (*p == ch) + return (p); + if (*p == '\0') + break; + } + + return (NULL); +} + static inline void * memset32(uint32_t *b, uint32_t c, size_t len) { @@ -267,4 +311,19 @@ memcpy_and_pad(void *dst, size_t dstlen, const void *src, size_t len, int ch) memset(_ptr + _o, _c, sizeof(*(ptr)) - _o); \ }) +#define memset_after(ptr, bytepat, smember) \ +({ \ + uint8_t *_ptr = (uint8_t *)(ptr); \ + int _c = (int)(bytepat); \ + size_t _o = offsetofend(typeof(*(ptr)), smember); \ + memset(_ptr + _o, _c, sizeof(*(ptr)) - _o); \ +}) + +static inline void +memzero_explicit(void *p, size_t s) +{ + memset(p, 0, s); + __asm__ __volatile__("": :"r"(p) :"memory"); +} + #endif /* _LINUXKPI_LINUX_STRING_H_ */ |