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__ 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__ 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)) 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)) 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)) 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)) 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)) 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)) 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)) 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)) 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__ 140 double difftime(time_t time1, time_t time2) 141 { 142 return time1 - time2; 143 } 144 145 static __inline__ 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)) 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)) 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)) 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)) 185 int sys_timer_delete(timer_t timerid) 186 { 187 return my_syscall1(__NR_timer_delete, timerid); 188 } 189 190 static __attribute__((unused)) 191 int timer_delete(timer_t timerid) 192 { 193 return __sysret(sys_timer_delete(timerid)); 194 } 195 196 static __attribute__((unused)) 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)) 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)) 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)) 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