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 */ 40 41 static __attribute__((unused)) 42 int sys_clock_getres(clockid_t clockid, struct timespec *res) 43 { 44 #if defined(__NR_clock_getres) 45 return my_syscall2(__NR_clock_getres, clockid, res); 46 #elif defined(__NR_clock_getres_time64) 47 struct __kernel_timespec kres; 48 int ret; 49 50 ret = my_syscall2(__NR_clock_getres_time64, clockid, &kres); 51 if (res) 52 __nolibc_timespec_kernel_to_user(&kres, res); 53 return ret; 54 #else 55 return __nolibc_enosys(__func__, clockid, res); 56 #endif 57 } 58 59 static __attribute__((unused)) 60 int clock_getres(clockid_t clockid, struct timespec *res) 61 { 62 return __sysret(sys_clock_getres(clockid, res)); 63 } 64 65 static __attribute__((unused)) 66 int sys_clock_gettime(clockid_t clockid, struct timespec *tp) 67 { 68 #if defined(__NR_clock_gettime) 69 return my_syscall2(__NR_clock_gettime, clockid, tp); 70 #elif defined(__NR_clock_gettime64) 71 struct __kernel_timespec ktp; 72 int ret; 73 74 ret = my_syscall2(__NR_clock_gettime64, clockid, &ktp); 75 if (tp) 76 __nolibc_timespec_kernel_to_user(&ktp, tp); 77 return ret; 78 #else 79 return __nolibc_enosys(__func__, clockid, tp); 80 #endif 81 } 82 83 static __attribute__((unused)) 84 int clock_gettime(clockid_t clockid, struct timespec *tp) 85 { 86 return __sysret(sys_clock_gettime(clockid, tp)); 87 } 88 89 static __attribute__((unused)) 90 int sys_clock_settime(clockid_t clockid, struct timespec *tp) 91 { 92 #if defined(__NR_clock_settime) 93 return my_syscall2(__NR_clock_settime, clockid, tp); 94 #elif defined(__NR_clock_settime64) 95 struct __kernel_timespec ktp; 96 97 __nolibc_timespec_user_to_kernel(tp, &ktp); 98 return my_syscall2(__NR_clock_settime64, clockid, &ktp); 99 #else 100 return __nolibc_enosys(__func__, clockid, tp); 101 #endif 102 } 103 104 static __attribute__((unused)) 105 int clock_settime(clockid_t clockid, struct timespec *tp) 106 { 107 return __sysret(sys_clock_settime(clockid, tp)); 108 } 109 110 111 static __inline__ 112 double difftime(time_t time1, time_t time2) 113 { 114 return time1 - time2; 115 } 116 117 118 static __attribute__((unused)) 119 time_t time(time_t *tptr) 120 { 121 struct timeval tv; 122 123 /* note, cannot fail here */ 124 sys_gettimeofday(&tv, NULL); 125 126 if (tptr) 127 *tptr = tv.tv_sec; 128 return tv.tv_sec; 129 } 130 131 132 /* 133 * int timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid); 134 * int timer_gettime(timer_t timerid, struct itimerspec *curr_value); 135 * int timer_settime(timer_t timerid, int flags, const struct itimerspec *new_value, struct itimerspec *old_value); 136 */ 137 138 static __attribute__((unused)) 139 int sys_timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid) 140 { 141 return my_syscall3(__NR_timer_create, clockid, evp, timerid); 142 } 143 144 static __attribute__((unused)) 145 int timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid) 146 { 147 return __sysret(sys_timer_create(clockid, evp, timerid)); 148 } 149 150 static __attribute__((unused)) 151 int sys_timer_delete(timer_t timerid) 152 { 153 return my_syscall1(__NR_timer_delete, timerid); 154 } 155 156 static __attribute__((unused)) 157 int timer_delete(timer_t timerid) 158 { 159 return __sysret(sys_timer_delete(timerid)); 160 } 161 162 static __attribute__((unused)) 163 int sys_timer_gettime(timer_t timerid, struct itimerspec *curr_value) 164 { 165 #if defined(__NR_timer_gettime) 166 return my_syscall2(__NR_timer_gettime, timerid, curr_value); 167 #elif defined(__NR_timer_gettime64) 168 struct __kernel_itimerspec kcurr_value; 169 int ret; 170 171 ret = my_syscall2(__NR_timer_gettime64, timerid, &kcurr_value); 172 __nolibc_timespec_kernel_to_user(&kcurr_value.it_interval, &curr_value->it_interval); 173 __nolibc_timespec_kernel_to_user(&kcurr_value.it_value, &curr_value->it_value); 174 return ret; 175 #else 176 return __nolibc_enosys(__func__, timerid, curr_value); 177 #endif 178 } 179 180 static __attribute__((unused)) 181 int timer_gettime(timer_t timerid, struct itimerspec *curr_value) 182 { 183 return __sysret(sys_timer_gettime(timerid, curr_value)); 184 } 185 186 static __attribute__((unused)) 187 int sys_timer_settime(timer_t timerid, int flags, 188 const struct itimerspec *new_value, struct itimerspec *old_value) 189 { 190 #if defined(__NR_timer_settime) 191 return my_syscall4(__NR_timer_settime, timerid, flags, new_value, old_value); 192 #elif defined(__NR_timer_settime64) 193 struct __kernel_itimerspec knew_value, kold_value; 194 int ret; 195 196 __nolibc_timespec_user_to_kernel(&new_value->it_value, &knew_value.it_value); 197 __nolibc_timespec_user_to_kernel(&new_value->it_interval, &knew_value.it_interval); 198 ret = my_syscall4(__NR_timer_settime64, timerid, flags, &knew_value, &kold_value); 199 if (old_value) { 200 __nolibc_timespec_kernel_to_user(&kold_value.it_interval, &old_value->it_interval); 201 __nolibc_timespec_kernel_to_user(&kold_value.it_value, &old_value->it_value); 202 } 203 return ret; 204 #else 205 return __nolibc_enosys(__func__, timerid, flags, new_value, old_value); 206 #endif 207 } 208 209 static __attribute__((unused)) 210 int timer_settime(timer_t timerid, int flags, 211 const struct itimerspec *new_value, struct itimerspec *old_value) 212 { 213 return __sysret(sys_timer_settime(timerid, flags, new_value, old_value)); 214 } 215 216 #endif /* _NOLIBC_TIME_H */ 217