| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _LINUX_STRING_HELPERS_H_ |
| #define _LINUX_STRING_HELPERS_H_ |
| |
| #include <linux/ctype.h> |
| #include <linux/types.h> |
| |
| struct file; |
| struct task_struct; |
| |
| /* 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); |
| |
| #define UNESCAPE_SPACE 0x01 |
| #define UNESCAPE_OCTAL 0x02 |
| #define UNESCAPE_HEX 0x04 |
| #define UNESCAPE_SPECIAL 0x08 |
| #define UNESCAPE_ANY \ |
| (UNESCAPE_SPACE | UNESCAPE_OCTAL | UNESCAPE_HEX | UNESCAPE_SPECIAL) |
| |
| 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 0x01 |
| #define ESCAPE_SPECIAL 0x02 |
| #define ESCAPE_NULL 0x04 |
| #define ESCAPE_OCTAL 0x08 |
| #define ESCAPE_ANY \ |
| (ESCAPE_SPACE | ESCAPE_OCTAL | ESCAPE_SPECIAL | ESCAPE_NULL) |
| #define ESCAPE_NP 0x10 |
| #define ESCAPE_ANY_NP (ESCAPE_ANY | ESCAPE_NP) |
| #define ESCAPE_HEX 0x20 |
| |
| int string_escape_mem(const char *src, size_t isz, char *dst, size_t osz, |
| unsigned int flags, const char *only); |
| |
| int string_escape_mem_ascii(const char *src, size_t isz, char *dst, |
| size_t osz); |
| |
| 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); |
| |
| void kfree_strarray(char **array, size_t n); |
| |
| #endif |