diff options
Diffstat (limited to 'include/linux/string_helpers.h')
| -rw-r--r-- | include/linux/string_helpers.h | 61 |
1 files changed, 44 insertions, 17 deletions
diff --git a/include/linux/string_helpers.h b/include/linux/string_helpers.h index 86f150c2a6b6..3fb88a1e9898 100644 --- a/include/linux/string_helpers.h +++ b/include/linux/string_helpers.h @@ -2,29 +2,47 @@ #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; -/* Descriptions of the types of units to - * print in */ +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), }; -void string_get_size(u64 size, u64 blk_size, enum string_size_units units, - char *buf, int len); +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 0x01 -#define UNESCAPE_OCTAL 0x02 -#define UNESCAPE_HEX 0x04 -#define UNESCAPE_SPECIAL 0x08 +#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) @@ -42,22 +60,24 @@ 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_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 0x10 +#define ESCAPE_NP BIT(4) #define ESCAPE_ANY_NP (ESCAPE_ANY | ESCAPE_NP) -#define ESCAPE_HEX 0x20 +#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); -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) { @@ -94,4 +114,11 @@ 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 |