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6f52b16c | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
607ca46e DH |
2 | #ifndef _UAPI_LINUX_TIME_H |
3 | #define _UAPI_LINUX_TIME_H | |
4 | ||
5 | #include <linux/types.h> | |
6 | ||
7 | ||
8 | #ifndef _STRUCT_TIMESPEC | |
9 | #define _STRUCT_TIMESPEC | |
10 | struct timespec { | |
11 | __kernel_time_t tv_sec; /* seconds */ | |
12 | long tv_nsec; /* nanoseconds */ | |
13 | }; | |
14 | #endif | |
15 | ||
16 | struct timeval { | |
17 | __kernel_time_t tv_sec; /* seconds */ | |
18 | __kernel_suseconds_t tv_usec; /* microseconds */ | |
19 | }; | |
20 | ||
21 | struct timezone { | |
22 | int tz_minuteswest; /* minutes west of Greenwich */ | |
23 | int tz_dsttime; /* type of dst correction */ | |
24 | }; | |
25 | ||
26 | ||
27 | /* | |
28 | * Names of the interval timers, and structure | |
29 | * defining a timer setting: | |
30 | */ | |
31 | #define ITIMER_REAL 0 | |
32 | #define ITIMER_VIRTUAL 1 | |
33 | #define ITIMER_PROF 2 | |
34 | ||
35 | struct itimerspec { | |
36 | struct timespec it_interval; /* timer period */ | |
37 | struct timespec it_value; /* timer expiration */ | |
38 | }; | |
39 | ||
40 | struct itimerval { | |
41 | struct timeval it_interval; /* timer interval */ | |
42 | struct timeval it_value; /* current value */ | |
43 | }; | |
44 | ||
45 | /* | |
46 | * The IDs of the various system clocks (for POSIX.1b interval timers): | |
47 | */ | |
48 | #define CLOCK_REALTIME 0 | |
49 | #define CLOCK_MONOTONIC 1 | |
50 | #define CLOCK_PROCESS_CPUTIME_ID 2 | |
51 | #define CLOCK_THREAD_CPUTIME_ID 3 | |
52 | #define CLOCK_MONOTONIC_RAW 4 | |
53 | #define CLOCK_REALTIME_COARSE 5 | |
54 | #define CLOCK_MONOTONIC_COARSE 6 | |
55 | #define CLOCK_BOOTTIME 7 | |
56 | #define CLOCK_REALTIME_ALARM 8 | |
57 | #define CLOCK_BOOTTIME_ALARM 9 | |
07903ada CH |
58 | /* |
59 | * The driver implementing this got removed. The clock ID is kept as a | |
60 | * place holder. Do not reuse! | |
61 | */ | |
62 | #define CLOCK_SGI_CYCLE 10 | |
1ff3c967 | 63 | #define CLOCK_TAI 11 |
607ca46e | 64 | |
607ca46e DH |
65 | #define MAX_CLOCKS 16 |
66 | #define CLOCKS_MASK (CLOCK_REALTIME | CLOCK_MONOTONIC) | |
67 | #define CLOCKS_MONO CLOCK_MONOTONIC | |
68 | ||
69 | /* | |
70 | * The various flags for setting POSIX.1b interval timers: | |
71 | */ | |
72 | #define TIMER_ABSTIME 0x01 | |
73 | ||
74 | #endif /* _UAPI_LINUX_TIME_H */ |