forked from mirrors/linux
045ad46441
Duplicate a NULL-terminated string and replace all occurrences of the old character with a new one. In other words, provide functionality of kstrdup() + strreplace(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230804143910.15504-2-andriy.shevchenko@linux.intel.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_STRING_HELPERS_H_
|
|
#define _LINUX_STRING_HELPERS_H_
|
|
|
|
#include <linux/bits.h>
|
|
#include <linux/ctype.h>
|
|
#include <linux/string_choices.h>
|
|
#include <linux/string.h>
|
|
#include <linux/types.h>
|
|
|
|
struct device;
|
|
struct file;
|
|
struct task_struct;
|
|
|
|
static inline bool string_is_terminated(const char *s, int len)
|
|
{
|
|
return memchr(s, '\0', len) ? true : false;
|
|
}
|
|
|
|
/* Descriptions of the types of units to
|
|
* print in */
|
|
enum string_size_units {
|
|
STRING_UNITS_10, /* use powers of 10^3 (standard SI) */
|
|
STRING_UNITS_2, /* use binary powers of 2^10 */
|
|
};
|
|
|
|
void string_get_size(u64 size, u64 blk_size, enum string_size_units units,
|
|
char *buf, int len);
|
|
|
|
int parse_int_array_user(const char __user *from, size_t count, int **array);
|
|
|
|
#define UNESCAPE_SPACE BIT(0)
|
|
#define UNESCAPE_OCTAL BIT(1)
|
|
#define UNESCAPE_HEX BIT(2)
|
|
#define UNESCAPE_SPECIAL BIT(3)
|
|
#define UNESCAPE_ANY \
|
|
(UNESCAPE_SPACE | UNESCAPE_OCTAL | UNESCAPE_HEX | UNESCAPE_SPECIAL)
|
|
|
|
#define UNESCAPE_ALL_MASK GENMASK(3, 0)
|
|
|
|
int string_unescape(char *src, char *dst, size_t size, unsigned int flags);
|
|
|
|
static inline int string_unescape_inplace(char *buf, unsigned int flags)
|
|
{
|
|
return string_unescape(buf, buf, 0, flags);
|
|
}
|
|
|
|
static inline int string_unescape_any(char *src, char *dst, size_t size)
|
|
{
|
|
return string_unescape(src, dst, size, UNESCAPE_ANY);
|
|
}
|
|
|
|
static inline int string_unescape_any_inplace(char *buf)
|
|
{
|
|
return string_unescape_any(buf, buf, 0);
|
|
}
|
|
|
|
#define ESCAPE_SPACE BIT(0)
|
|
#define ESCAPE_SPECIAL BIT(1)
|
|
#define ESCAPE_NULL BIT(2)
|
|
#define ESCAPE_OCTAL BIT(3)
|
|
#define ESCAPE_ANY \
|
|
(ESCAPE_SPACE | ESCAPE_OCTAL | ESCAPE_SPECIAL | ESCAPE_NULL)
|
|
#define ESCAPE_NP BIT(4)
|
|
#define ESCAPE_ANY_NP (ESCAPE_ANY | ESCAPE_NP)
|
|
#define ESCAPE_HEX BIT(5)
|
|
#define ESCAPE_NA BIT(6)
|
|
#define ESCAPE_NAP BIT(7)
|
|
#define ESCAPE_APPEND BIT(8)
|
|
|
|
#define ESCAPE_ALL_MASK GENMASK(8, 0)
|
|
|
|
int string_escape_mem(const char *src, size_t isz, char *dst, size_t osz,
|
|
unsigned int flags, const char *only);
|
|
|
|
static inline int string_escape_mem_any_np(const char *src, size_t isz,
|
|
char *dst, size_t osz, const char *only)
|
|
{
|
|
return string_escape_mem(src, isz, dst, osz, ESCAPE_ANY_NP, only);
|
|
}
|
|
|
|
static inline int string_escape_str(const char *src, char *dst, size_t sz,
|
|
unsigned int flags, const char *only)
|
|
{
|
|
return string_escape_mem(src, strlen(src), dst, sz, flags, only);
|
|
}
|
|
|
|
static inline int string_escape_str_any_np(const char *src, char *dst,
|
|
size_t sz, const char *only)
|
|
{
|
|
return string_escape_str(src, dst, sz, ESCAPE_ANY_NP, only);
|
|
}
|
|
|
|
static inline void string_upper(char *dst, const char *src)
|
|
{
|
|
do {
|
|
*dst++ = toupper(*src);
|
|
} while (*src++);
|
|
}
|
|
|
|
static inline void string_lower(char *dst, const char *src)
|
|
{
|
|
do {
|
|
*dst++ = tolower(*src);
|
|
} while (*src++);
|
|
}
|
|
|
|
char *kstrdup_quotable(const char *src, gfp_t gfp);
|
|
char *kstrdup_quotable_cmdline(struct task_struct *task, gfp_t gfp);
|
|
char *kstrdup_quotable_file(struct file *file, gfp_t gfp);
|
|
|
|
char *kstrdup_and_replace(const char *src, char old, char new, gfp_t gfp);
|
|
|
|
char **kasprintf_strarray(gfp_t gfp, const char *prefix, size_t n);
|
|
void kfree_strarray(char **array, size_t n);
|
|
|
|
char **devm_kasprintf_strarray(struct device *dev, const char *prefix, size_t n);
|
|
|
|
#endif
|