1 #ifndef _LINUX_STRING_HELPERS_H_
2 #define _LINUX_STRING_HELPERS_H_
3
4 #include <linux/types.h>
5
6 struct file;
7
8 /* Descriptions of the types of units to
9 * print in */
10 enum 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
15 void 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
25 int string_unescape(char *src, char *dst, size_t size, unsigned int flags);
26
string_unescape_inplace(char * buf,unsigned int flags)27 static inline int string_unescape_inplace(char *buf, unsigned int flags)
28 {
29 return string_unescape(buf, buf, 0, flags);
30 }
31
string_unescape_any(char * src,char * dst,size_t size)32 static inline int string_unescape_any(char *src, char *dst, size_t size)
33 {
34 return string_unescape(src, dst, size, UNESCAPE_ANY);
35 }
36
string_unescape_any_inplace(char * buf)37 static 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
52 int string_escape_mem(const char *src, size_t isz, char *dst, size_t osz,
53 unsigned int flags, const char *only);
54
string_escape_mem_any_np(const char * src,size_t isz,char * dst,size_t osz,const char * only)55 static 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
string_escape_str(const char * src,char * dst,size_t sz,unsigned int flags,const char * only)61 static 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
string_escape_str_any_np(const char * src,char * dst,size_t sz,const char * only)67 static 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
73 char *kstrdup_quotable(const char *src, gfp_t gfp);
74 char *kstrdup_quotable_cmdline(struct task_struct *task, gfp_t gfp);
75 char *kstrdup_quotable_file(struct file *file, gfp_t gfp);
76
77 #endif
78