1 /* SPDX-License-Identifier: LGPL-2.1 OR MIT */
2 /*
3 * time function definitions for NOLIBC
4 * Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>
5 */
6
7 /* make sure to include all global symbols */
8 #include "nolibc.h"
9
10 #ifndef _NOLIBC_TIME_H
11 #define _NOLIBC_TIME_H
12
13 #include "std.h"
14 #include "arch.h"
15 #include "types.h"
16 #include "sys.h"
17
18 #include <linux/signal.h>
19 #include <linux/time.h>
20
21 static __inline__
__nolibc_timespec_user_to_kernel(const struct timespec * ts,struct __kernel_timespec * kts)22 void __nolibc_timespec_user_to_kernel(const struct timespec *ts, struct __kernel_timespec *kts)
23 {
24 kts->tv_sec = ts->tv_sec;
25 kts->tv_nsec = ts->tv_nsec;
26 }
27
28 static __inline__
__nolibc_timespec_kernel_to_user(const struct __kernel_timespec * kts,struct timespec * ts)29 void __nolibc_timespec_kernel_to_user(const struct __kernel_timespec *kts, struct timespec *ts)
30 {
31 ts->tv_sec = kts->tv_sec;
32 ts->tv_nsec = kts->tv_nsec;
33 }
34
35 /*
36 * int clock_getres(clockid_t clockid, struct timespec *res);
37 * int clock_gettime(clockid_t clockid, struct timespec *tp);
38 * int clock_settime(clockid_t clockid, const struct timespec *tp);
39 * int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp,
40 * struct timespec *rmtp)
41 */
42
43 static __attribute__((unused))
sys_clock_getres(clockid_t clockid,struct timespec * res)44 int sys_clock_getres(clockid_t clockid, struct timespec *res)
45 {
46 #if defined(__NR_clock_getres)
47 return my_syscall2(__NR_clock_getres, clockid, res);
48 #elif defined(__NR_clock_getres_time64)
49 struct __kernel_timespec kres;
50 int ret;
51
52 ret = my_syscall2(__NR_clock_getres_time64, clockid, &kres);
53 if (res)
54 __nolibc_timespec_kernel_to_user(&kres, res);
55 return ret;
56 #else
57 return __nolibc_enosys(__func__, clockid, res);
58 #endif
59 }
60
61 static __attribute__((unused))
clock_getres(clockid_t clockid,struct timespec * res)62 int clock_getres(clockid_t clockid, struct timespec *res)
63 {
64 return __sysret(sys_clock_getres(clockid, res));
65 }
66
67 static __attribute__((unused))
sys_clock_gettime(clockid_t clockid,struct timespec * tp)68 int sys_clock_gettime(clockid_t clockid, struct timespec *tp)
69 {
70 #if defined(__NR_clock_gettime)
71 return my_syscall2(__NR_clock_gettime, clockid, tp);
72 #elif defined(__NR_clock_gettime64)
73 struct __kernel_timespec ktp;
74 int ret;
75
76 ret = my_syscall2(__NR_clock_gettime64, clockid, &ktp);
77 if (tp)
78 __nolibc_timespec_kernel_to_user(&ktp, tp);
79 return ret;
80 #else
81 return __nolibc_enosys(__func__, clockid, tp);
82 #endif
83 }
84
85 static __attribute__((unused))
clock_gettime(clockid_t clockid,struct timespec * tp)86 int clock_gettime(clockid_t clockid, struct timespec *tp)
87 {
88 return __sysret(sys_clock_gettime(clockid, tp));
89 }
90
91 static __attribute__((unused))
sys_clock_settime(clockid_t clockid,struct timespec * tp)92 int sys_clock_settime(clockid_t clockid, struct timespec *tp)
93 {
94 #if defined(__NR_clock_settime)
95 return my_syscall2(__NR_clock_settime, clockid, tp);
96 #elif defined(__NR_clock_settime64)
97 struct __kernel_timespec ktp;
98
99 __nolibc_timespec_user_to_kernel(tp, &ktp);
100 return my_syscall2(__NR_clock_settime64, clockid, &ktp);
101 #else
102 return __nolibc_enosys(__func__, clockid, tp);
103 #endif
104 }
105
106 static __attribute__((unused))
clock_settime(clockid_t clockid,struct timespec * tp)107 int clock_settime(clockid_t clockid, struct timespec *tp)
108 {
109 return __sysret(sys_clock_settime(clockid, tp));
110 }
111
112 static __attribute__((unused))
sys_clock_nanosleep(clockid_t clockid,int flags,const struct timespec * rqtp,struct timespec * rmtp)113 int sys_clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp,
114 struct timespec *rmtp)
115 {
116 #if defined(__NR_clock_nanosleep)
117 return my_syscall4(__NR_clock_nanosleep, clockid, flags, rqtp, rmtp);
118 #elif defined(__NR_clock_nanosleep_time64)
119 struct __kernel_timespec krqtp, krmtp;
120 int ret;
121
122 __nolibc_timespec_user_to_kernel(rqtp, &krqtp);
123 ret = my_syscall4(__NR_clock_nanosleep_time64, clockid, flags, &krqtp, &krmtp);
124 if (rmtp)
125 __nolibc_timespec_kernel_to_user(&krmtp, rmtp);
126 return ret;
127 #else
128 return __nolibc_enosys(__func__, clockid, flags, rqtp, rmtp);
129 #endif
130 }
131
132 static __attribute__((unused))
clock_nanosleep(clockid_t clockid,int flags,const struct timespec * rqtp,struct timespec * rmtp)133 int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp,
134 struct timespec *rmtp)
135 {
136 return __sysret(sys_clock_nanosleep(clockid, flags, rqtp, rmtp));
137 }
138
139 static __inline__
difftime(time_t time1,time_t time2)140 double difftime(time_t time1, time_t time2)
141 {
142 return time1 - time2;
143 }
144
145 static __inline__
nanosleep(const struct timespec * rqtp,struct timespec * rmtp)146 int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
147 {
148 return clock_nanosleep(CLOCK_REALTIME, 0, rqtp, rmtp);
149 }
150
151
152 static __attribute__((unused))
time(time_t * tptr)153 time_t time(time_t *tptr)
154 {
155 struct timeval tv;
156
157 /* note, cannot fail here */
158 sys_gettimeofday(&tv, NULL);
159
160 if (tptr)
161 *tptr = tv.tv_sec;
162 return tv.tv_sec;
163 }
164
165
166 /*
167 * int timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid);
168 * int timer_gettime(timer_t timerid, struct itimerspec *curr_value);
169 * int timer_settime(timer_t timerid, int flags, const struct itimerspec *new_value, struct itimerspec *old_value);
170 */
171
172 static __attribute__((unused))
sys_timer_create(clockid_t clockid,struct sigevent * evp,timer_t * timerid)173 int sys_timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid)
174 {
175 return my_syscall3(__NR_timer_create, clockid, evp, timerid);
176 }
177
178 static __attribute__((unused))
timer_create(clockid_t clockid,struct sigevent * evp,timer_t * timerid)179 int timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid)
180 {
181 return __sysret(sys_timer_create(clockid, evp, timerid));
182 }
183
184 static __attribute__((unused))
sys_timer_delete(timer_t timerid)185 int sys_timer_delete(timer_t timerid)
186 {
187 return my_syscall1(__NR_timer_delete, timerid);
188 }
189
190 static __attribute__((unused))
timer_delete(timer_t timerid)191 int timer_delete(timer_t timerid)
192 {
193 return __sysret(sys_timer_delete(timerid));
194 }
195
196 static __attribute__((unused))
sys_timer_gettime(timer_t timerid,struct itimerspec * curr_value)197 int sys_timer_gettime(timer_t timerid, struct itimerspec *curr_value)
198 {
199 #if defined(__NR_timer_gettime)
200 return my_syscall2(__NR_timer_gettime, timerid, curr_value);
201 #elif defined(__NR_timer_gettime64)
202 struct __kernel_itimerspec kcurr_value;
203 int ret;
204
205 ret = my_syscall2(__NR_timer_gettime64, timerid, &kcurr_value);
206 __nolibc_timespec_kernel_to_user(&kcurr_value.it_interval, &curr_value->it_interval);
207 __nolibc_timespec_kernel_to_user(&kcurr_value.it_value, &curr_value->it_value);
208 return ret;
209 #else
210 return __nolibc_enosys(__func__, timerid, curr_value);
211 #endif
212 }
213
214 static __attribute__((unused))
timer_gettime(timer_t timerid,struct itimerspec * curr_value)215 int timer_gettime(timer_t timerid, struct itimerspec *curr_value)
216 {
217 return __sysret(sys_timer_gettime(timerid, curr_value));
218 }
219
220 static __attribute__((unused))
sys_timer_settime(timer_t timerid,int flags,const struct itimerspec * new_value,struct itimerspec * old_value)221 int sys_timer_settime(timer_t timerid, int flags,
222 const struct itimerspec *new_value, struct itimerspec *old_value)
223 {
224 #if defined(__NR_timer_settime)
225 return my_syscall4(__NR_timer_settime, timerid, flags, new_value, old_value);
226 #elif defined(__NR_timer_settime64)
227 struct __kernel_itimerspec knew_value, kold_value;
228 int ret;
229
230 __nolibc_timespec_user_to_kernel(&new_value->it_value, &knew_value.it_value);
231 __nolibc_timespec_user_to_kernel(&new_value->it_interval, &knew_value.it_interval);
232 ret = my_syscall4(__NR_timer_settime64, timerid, flags, &knew_value, &kold_value);
233 if (old_value) {
234 __nolibc_timespec_kernel_to_user(&kold_value.it_interval, &old_value->it_interval);
235 __nolibc_timespec_kernel_to_user(&kold_value.it_value, &old_value->it_value);
236 }
237 return ret;
238 #else
239 return __nolibc_enosys(__func__, timerid, flags, new_value, old_value);
240 #endif
241 }
242
243 static __attribute__((unused))
timer_settime(timer_t timerid,int flags,const struct itimerspec * new_value,struct itimerspec * old_value)244 int timer_settime(timer_t timerid, int flags,
245 const struct itimerspec *new_value, struct itimerspec *old_value)
246 {
247 return __sysret(sys_timer_settime(timerid, flags, new_value, old_value));
248 }
249
250 #endif /* _NOLIBC_TIME_H */
251