1#ifndef _LINUX_TIME64_H
2#define _LINUX_TIME64_H
3
4#include <uapi/linux/time.h>
5
6typedef __s64 time64_t;
7
8
9
10
11
12#if __BITS_PER_LONG == 64
13# define timespec64 timespec
14#else
15struct timespec64 {
16 time64_t tv_sec;
17 long tv_nsec;
18};
19#endif
20
21
22#define MSEC_PER_SEC 1000L
23#define USEC_PER_MSEC 1000L
24#define NSEC_PER_USEC 1000L
25#define NSEC_PER_MSEC 1000000L
26#define USEC_PER_SEC 1000000L
27#define NSEC_PER_SEC 1000000000L
28#define FSEC_PER_SEC 1000000000000000LL
29
30
31#define TIME64_MAX ((s64)~((u64)1 << 63))
32#define KTIME_MAX ((s64)~((u64)1 << 63))
33#define KTIME_SEC_MAX (KTIME_MAX / NSEC_PER_SEC)
34
35#if __BITS_PER_LONG == 64
36
37static inline struct timespec timespec64_to_timespec(const struct timespec64 ts64)
38{
39 return ts64;
40}
41
42static inline struct timespec64 timespec_to_timespec64(const struct timespec ts)
43{
44 return ts;
45}
46
47# define timespec64_equal timespec_equal
48# define timespec64_compare timespec_compare
49# define set_normalized_timespec64 set_normalized_timespec
50# define timespec64_add_safe timespec_add_safe
51# define timespec64_add timespec_add
52# define timespec64_sub timespec_sub
53# define timespec64_valid timespec_valid
54# define timespec64_valid_strict timespec_valid_strict
55# define timespec64_to_ns timespec_to_ns
56# define ns_to_timespec64 ns_to_timespec
57# define timespec64_add_ns timespec_add_ns
58
59#else
60
61static inline struct timespec timespec64_to_timespec(const struct timespec64 ts64)
62{
63 struct timespec ret;
64
65 ret.tv_sec = (time_t)ts64.tv_sec;
66 ret.tv_nsec = ts64.tv_nsec;
67 return ret;
68}
69
70static inline struct timespec64 timespec_to_timespec64(const struct timespec ts)
71{
72 struct timespec64 ret;
73
74 ret.tv_sec = ts.tv_sec;
75 ret.tv_nsec = ts.tv_nsec;
76 return ret;
77}
78
79static inline int timespec64_equal(const struct timespec64 *a,
80 const struct timespec64 *b)
81{
82 return (a->tv_sec == b->tv_sec) && (a->tv_nsec == b->tv_nsec);
83}
84
85
86
87
88
89
90static inline int timespec64_compare(const struct timespec64 *lhs, const struct timespec64 *rhs)
91{
92 if (lhs->tv_sec < rhs->tv_sec)
93 return -1;
94 if (lhs->tv_sec > rhs->tv_sec)
95 return 1;
96 return lhs->tv_nsec - rhs->tv_nsec;
97}
98
99extern void set_normalized_timespec64(struct timespec64 *ts, time64_t sec, s64 nsec);
100
101
102
103
104
105
106extern struct timespec64 timespec64_add_safe(const struct timespec64 lhs,
107 const struct timespec64 rhs);
108
109
110static inline struct timespec64 timespec64_add(struct timespec64 lhs,
111 struct timespec64 rhs)
112{
113 struct timespec64 ts_delta;
114 set_normalized_timespec64(&ts_delta, lhs.tv_sec + rhs.tv_sec,
115 lhs.tv_nsec + rhs.tv_nsec);
116 return ts_delta;
117}
118
119
120
121
122static inline struct timespec64 timespec64_sub(struct timespec64 lhs,
123 struct timespec64 rhs)
124{
125 struct timespec64 ts_delta;
126 set_normalized_timespec64(&ts_delta, lhs.tv_sec - rhs.tv_sec,
127 lhs.tv_nsec - rhs.tv_nsec);
128 return ts_delta;
129}
130
131
132
133
134static inline bool timespec64_valid(const struct timespec64 *ts)
135{
136
137 if (ts->tv_sec < 0)
138 return false;
139
140 if ((unsigned long)ts->tv_nsec >= NSEC_PER_SEC)
141 return false;
142 return true;
143}
144
145static inline bool timespec64_valid_strict(const struct timespec64 *ts)
146{
147 if (!timespec64_valid(ts))
148 return false;
149
150 if ((unsigned long long)ts->tv_sec >= KTIME_SEC_MAX)
151 return false;
152 return true;
153}
154
155
156
157
158
159
160
161
162static inline s64 timespec64_to_ns(const struct timespec64 *ts)
163{
164 return ((s64) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec;
165}
166
167
168
169
170
171
172
173extern struct timespec64 ns_to_timespec64(const s64 nsec);
174
175
176
177
178
179
180
181
182
183static __always_inline void timespec64_add_ns(struct timespec64 *a, u64 ns)
184{
185 a->tv_sec += __iter_div_u64_rem(a->tv_nsec + ns, NSEC_PER_SEC, &ns);
186 a->tv_nsec = ns;
187}
188
189#endif
190
191#endif
192