Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1#ifndef _LINUX_STRING_HELPERS_H_
2#define _LINUX_STRING_HELPERS_H_
3
4#include <linux/types.h>
5
6struct file;
7
8/* Descriptions of the types of units to
9 * print in */
10enum string_size_units {
11 STRING_UNITS_10, /* use powers of 10^3 (standard SI) */
12 STRING_UNITS_2, /* use binary powers of 2^10 */
13};
14
15void string_get_size(u64 size, u64 blk_size, enum string_size_units units,
16 char *buf, int len);
17
18#define UNESCAPE_SPACE 0x01
19#define UNESCAPE_OCTAL 0x02
20#define UNESCAPE_HEX 0x04
21#define UNESCAPE_SPECIAL 0x08
22#define UNESCAPE_ANY \
23 (UNESCAPE_SPACE | UNESCAPE_OCTAL | UNESCAPE_HEX | UNESCAPE_SPECIAL)
24
25int string_unescape(char *src, char *dst, size_t size, unsigned int flags);
26
27static inline int string_unescape_inplace(char *buf, unsigned int flags)
28{
29 return string_unescape(buf, buf, 0, flags);
30}
31
32static inline int string_unescape_any(char *src, char *dst, size_t size)
33{
34 return string_unescape(src, dst, size, UNESCAPE_ANY);
35}
36
37static inline int string_unescape_any_inplace(char *buf)
38{
39 return string_unescape_any(buf, buf, 0);
40}
41
42#define ESCAPE_SPACE 0x01
43#define ESCAPE_SPECIAL 0x02
44#define ESCAPE_NULL 0x04
45#define ESCAPE_OCTAL 0x08
46#define ESCAPE_ANY \
47 (ESCAPE_SPACE | ESCAPE_OCTAL | ESCAPE_SPECIAL | ESCAPE_NULL)
48#define ESCAPE_NP 0x10
49#define ESCAPE_ANY_NP (ESCAPE_ANY | ESCAPE_NP)
50#define ESCAPE_HEX 0x20
51
52int string_escape_mem(const char *src, size_t isz, char *dst, size_t osz,
53 unsigned int flags, const char *only);
54
55static inline int string_escape_mem_any_np(const char *src, size_t isz,
56 char *dst, size_t osz, const char *only)
57{
58 return string_escape_mem(src, isz, dst, osz, ESCAPE_ANY_NP, only);
59}
60
61static inline int string_escape_str(const char *src, char *dst, size_t sz,
62 unsigned int flags, const char *only)
63{
64 return string_escape_mem(src, strlen(src), dst, sz, flags, only);
65}
66
67static inline int string_escape_str_any_np(const char *src, char *dst,
68 size_t sz, const char *only)
69{
70 return string_escape_str(src, dst, sz, ESCAPE_ANY_NP, only);
71}
72
73char *kstrdup_quotable(const char *src, gfp_t gfp);
74char *kstrdup_quotable_cmdline(struct task_struct *task, gfp_t gfp);
75char *kstrdup_quotable_file(struct file *file, gfp_t gfp);
76
77#endif