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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125/* 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 */ STRING_UNITS_MASK = BIT(0),
/* Modifiers */ STRING_UNITS_NO_SPACE = BIT(30), STRING_UNITS_NO_BYTES = BIT(31),};
int string_get_size(u64 size, u64 blk_size, const enum string_size_units units, char *buf, int len);
int parse_int_array(const char *buf, size_t count, int **array);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