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/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013-2017 Mellanox Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* 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_
#include <sys/ctype.h>
#include <linux/types.h>
#include <linux/gfp.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/err.h>
#include <sys/libkern.h>
#define strnicmp(...) strncasecmp(__VA_ARGS__)
static inline int
match_string(const char *const *table, int n, const char *key)
{
int i;
for (i = 0; i != n && table[i] != NULL; i++) {
if (strcmp(table[i], key) == 0)
return (i);
}
return (-EINVAL);
}
static inline void *
memdup_user(const void *ptr, size_t len)
{
void *retval;
int error;
retval = malloc(len, M_KMALLOC, M_WAITOK);
error = linux_copyin(ptr, retval, len);
if (error != 0) {
free(retval, M_KMALLOC);
return (ERR_PTR(error));
}
return (retval);
}
static inline void *
memdup_user_nul(const void *ptr, size_t len)
{
char *retval;
int error;
retval = malloc(len + 1, M_KMALLOC, M_WAITOK);
error = linux_copyin(ptr, retval, len);
if (error != 0) {
free(retval, M_KMALLOC);
return (ERR_PTR(error));
}
retval[len] = '\0';
return (retval);
}
static inline void *
kmemdup(const void *src, size_t len, gfp_t gfp)
{
void *dst;
dst = kmalloc(len, gfp);
if (dst != NULL)
memcpy(dst, src, len);
return (dst);
}
static inline char *
kstrdup(const char *string, gfp_t gfp)
{
char *retval;
size_t len;
if (string == NULL)
return (NULL);
len = strlen(string) + 1;
retval = kmalloc(len, gfp);
if (retval != NULL)
memcpy(retval, string, len);
return (retval);
}
static inline char *
kstrndup(const char *string, size_t len, gfp_t gfp)
{
char *retval;
if (string == NULL)
return (NULL);
retval = kmalloc(len + 1, gfp);
if (retval != NULL)
strncpy(retval, string, len);
return (retval);
}
static inline const char *
kstrdup_const(const char *src, gfp_t gfp)
{
return (kmemdup(src, strlen(src) + 1, gfp));
}
static inline char *
skip_spaces(const char *str)
{
while (isspace(*str))
++str;
return (__DECONST(char *, str));
}
static inline void *
memchr_inv(const void *start, int c, size_t length)
{
const u8 *ptr;
const u8 *end;
u8 ch;
ch = c;
ptr = start;
end = ptr + length;
while (ptr != end) {
if (*ptr != ch)
return (__DECONST(void *, ptr));
ptr++;
}
return (NULL);
}
static inline size_t
str_has_prefix(const char *str, const char *prefix)
{
size_t len;
len = strlen(prefix);
return (strncmp(str, prefix, len) == 0 ? len : 0);
}
static inline char *
strreplace(char *str, char old, char new)
{
char *p;
p = strchrnul(str, old);
while (p != NULL && *p != '\0') {
*p = new;
p = strchrnul(str, old);
}
return (p);
}
static inline ssize_t
strscpy(char* dst, const char* src, size_t len)
{
size_t i;
if (len <= INT_MAX) {
for (i = 0; i < len; i++)
if ('\0' == (dst[i] = src[i]))
return ((ssize_t)i);
if (i != 0)
dst[--i] = '\0';
}
return (-E2BIG);
}
#endif /* _LINUXKPI_LINUX_STRING_H_ */
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