Commit | Line | Data |
---|---|---|
d01b68d6 | 1 | /* kern_time.c 5.5 82/09/08 */ |
aac7ea5b BJ |
2 | |
3 | #include "../h/param.h" | |
b6f30e0a | 4 | #include "../h/dir.h" /* XXX */ |
aac7ea5b | 5 | #include "../h/user.h" |
b6f30e0a | 6 | #include "../h/kernel.h" |
aac7ea5b BJ |
7 | #include "../h/reg.h" |
8 | #include "../h/inode.h" | |
9 | #include "../h/proc.h" | |
b6f30e0a | 10 | |
1edb1cf8 BJ |
11 | /* |
12 | * Time of day and interval timer support. | |
13 | */ | |
14 | ||
b6f30e0a | 15 | gettimeofday() |
4147b3f6 | 16 | { |
b6f30e0a BJ |
17 | register struct a { |
18 | struct timeval *tp; | |
19 | struct timezone *tzp; | |
20 | } *uap = (struct a *)u.u_ap; | |
21 | struct timeval atv; | |
1edb1cf8 | 22 | int s; |
4147b3f6 | 23 | |
1edb1cf8 | 24 | s = spl7(); atv = time; splx(s); |
b6f30e0a BJ |
25 | if (copyout((caddr_t)&atv, (caddr_t)uap->tp, sizeof (atv))) { |
26 | u.u_error = EFAULT; | |
27 | return; | |
28 | } | |
29 | if (uap->tzp == 0) | |
30 | return; | |
1edb1cf8 | 31 | /* SHOULD HAVE PER-PROCESS TIMEZONE */ |
b6f30e0a BJ |
32 | if (copyout((caddr_t)&tz, uap->tzp, sizeof (tz))) { |
33 | u.u_error = EFAULT; | |
34 | return; | |
35 | } | |
4147b3f6 BJ |
36 | } |
37 | ||
b6f30e0a | 38 | settimeofday() |
aac7ea5b | 39 | { |
b6f30e0a | 40 | register struct a { |
1edb1cf8 BJ |
41 | struct timeval *tv; |
42 | struct timezone *tzp; | |
b6f30e0a BJ |
43 | } *uap = (struct a *)u.u_ap; |
44 | struct timeval atv; | |
45 | struct timezone atz; | |
4147b3f6 | 46 | |
b6f30e0a BJ |
47 | if (copyin((caddr_t)uap->tv, (caddr_t)&atv, sizeof (struct timeval))) { |
48 | u.u_error = EFAULT; | |
49 | return; | |
50 | } | |
1edb1cf8 BJ |
51 | setthetime(&atv); |
52 | if (uap->tzp && suser()) { | |
b6f30e0a BJ |
53 | if (copyin((caddr_t)uap->tzp, (caddr_t)&atz, sizeof (atz))) { |
54 | u.u_error = EFAULT; | |
55 | return; | |
56 | } | |
b6f30e0a | 57 | } |
4147b3f6 BJ |
58 | } |
59 | ||
1edb1cf8 BJ |
60 | setthetime(tv) |
61 | struct timeval *tv; | |
62 | { | |
63 | register int delta; | |
64 | int s; | |
65 | ||
66 | if (!suser()) | |
67 | return; | |
68 | boottime.tv_sec += tv->tv_sec - time.tv_sec; | |
69 | s = spl7(); time = *tv; splx(s); | |
70 | clockset(); | |
71 | } | |
72 | ||
b6f30e0a BJ |
73 | timevaladd(t1, t2) |
74 | struct timeval *t1, *t2; | |
4147b3f6 BJ |
75 | { |
76 | ||
b6f30e0a | 77 | t1->tv_sec += t2->tv_sec; |
1edb1cf8 | 78 | t1->tv_usec += t2->tv_usec; |
b6f30e0a | 79 | timevalfix(t1); |
4147b3f6 BJ |
80 | } |
81 | ||
b6f30e0a BJ |
82 | timevalsub(t1, t2) |
83 | struct timeval *t1, *t2; | |
4147b3f6 BJ |
84 | { |
85 | ||
b6f30e0a | 86 | t1->tv_sec -= t2->tv_sec; |
1edb1cf8 | 87 | t1->tv_usec -= t2->tv_usec; |
b6f30e0a | 88 | timevalfix(t1); |
aac7ea5b BJ |
89 | } |
90 | ||
b6f30e0a BJ |
91 | timevalfix(t1) |
92 | struct timeval *t1; | |
93 | { | |
94 | ||
95 | if (t1->tv_usec < 0) { | |
96 | t1->tv_sec--; | |
97 | t1->tv_usec += 1000000; | |
98 | } | |
99 | if (t1->tv_usec >= 1000000) { | |
100 | t1->tv_sec++; | |
101 | t1->tv_usec -= 1000000; | |
102 | } | |
103 | } | |
104 | ||
105 | getitimer() | |
aac7ea5b BJ |
106 | { |
107 | register struct a { | |
b6f30e0a BJ |
108 | u_int which; |
109 | struct itimerval *itv; | |
110 | } *uap = (struct a *)u.u_ap; | |
d01b68d6 | 111 | struct itimerval aitv; |
b6f30e0a | 112 | int s; |
aac7ea5b | 113 | |
b6f30e0a BJ |
114 | if (uap->which > 2) { |
115 | u.u_error = EINVAL; | |
116 | return; | |
aac7ea5b | 117 | } |
b6f30e0a | 118 | s = spl7(); |
d01b68d6 BJ |
119 | if (uap->which == ITIMER_REAL) { |
120 | aitv = u.u_procp->p_realtimer; | |
121 | if (timerisset(&aitv.it_value)) | |
122 | if (timercmp(&aitv.it_value, &time, <)) | |
123 | timerclear(&aitv.it_value); | |
124 | else | |
125 | timevalsub(&aitv.it_value, &time); | |
126 | } else | |
127 | aitv = u.u_timer[uap->which]; | |
128 | splx(s); | |
129 | if (copyout((caddr_t)&aitv, uap->itv, sizeof (struct itimerval))) | |
aac7ea5b | 130 | u.u_error = EFAULT; |
b6f30e0a | 131 | splx(s); |
aac7ea5b BJ |
132 | } |
133 | ||
b6f30e0a | 134 | setitimer() |
aac7ea5b BJ |
135 | { |
136 | register struct a { | |
b6f30e0a | 137 | u_int which; |
1edb1cf8 | 138 | struct itimerval *itv, *oitv; |
b6f30e0a BJ |
139 | } *uap = (struct a *)u.u_ap; |
140 | struct itimerval aitv; | |
141 | int s; | |
d01b68d6 | 142 | register struct proc *p = u.u_procp; |
aac7ea5b | 143 | |
b6f30e0a BJ |
144 | if (uap->which > 2) { |
145 | u.u_error = EINVAL; | |
1edb1cf8 | 146 | return; |
b6f30e0a BJ |
147 | } |
148 | if (copyin((caddr_t)uap->itv, (caddr_t)&aitv, | |
149 | sizeof (struct itimerval))) { | |
150 | u.u_error = EFAULT; | |
1edb1cf8 BJ |
151 | return; |
152 | } | |
153 | if (uap->oitv) { | |
154 | uap->itv = uap->oitv; | |
155 | getitimer(); | |
b6f30e0a | 156 | } |
1edb1cf8 BJ |
157 | if (itimerfix(&aitv.it_value) || itimerfix(&aitv.it_interval)) { |
158 | u.u_error = EINVAL; | |
159 | return; | |
160 | } | |
161 | s = spl7(); | |
d01b68d6 BJ |
162 | if (uap->which == ITIMER_REAL) { |
163 | untimeout(unrto, p); | |
164 | if (timerisset(&aitv.it_value)) { | |
165 | timevaladd(&aitv.it_value, &time); | |
166 | timeout(unrto, p, hzto(&aitv.it_value)); | |
167 | } | |
168 | p->p_realtimer = aitv; | |
169 | } else | |
1edb1cf8 | 170 | u.u_timer[uap->which] = aitv; |
b6f30e0a | 171 | splx(s); |
b6f30e0a BJ |
172 | } |
173 | ||
d01b68d6 BJ |
174 | unrto(p) |
175 | register struct proc *p; | |
176 | { | |
177 | int s; | |
178 | ||
179 | psignal(p, SIGALRM); | |
180 | if (!timerisset(&p->p_realtimer.it_interval)) { | |
181 | timerclear(&p->p_realtimer.it_value); | |
182 | return; | |
183 | } | |
184 | for (;;) { | |
185 | s = spl7(); | |
186 | timevaladd(&p->p_realtimer.it_value, | |
187 | &p->p_realtimer.it_interval); | |
188 | if (timercmp(&p->p_realtimer.it_value, &time, >)) { | |
189 | timeout(unrto, p, hzto(&p->p_realtimer.it_value)); | |
190 | splx(s); | |
191 | return; | |
192 | } | |
193 | splx(s); | |
194 | } | |
195 | } | |
196 | ||
1edb1cf8 BJ |
197 | itimerfix(tv) |
198 | struct timeval *tv; | |
b6f30e0a | 199 | { |
b6f30e0a | 200 | |
d01b68d6 BJ |
201 | if (tv->tv_sec < 0 || tv->tv_sec > 100000000 || |
202 | tv->tv_usec < 0 || tv->tv_usec >= 1000000) | |
1edb1cf8 BJ |
203 | return (EINVAL); |
204 | if (tv->tv_sec == 0 && tv->tv_usec < tick) | |
205 | tv->tv_usec = tick; | |
206 | return (0); | |
b6f30e0a BJ |
207 | } |
208 | ||
209 | itimerdecr(itp, usec) | |
210 | register struct itimerval *itp; | |
211 | int usec; | |
212 | { | |
213 | ||
1edb1cf8 BJ |
214 | if (itp->it_value.tv_usec < usec) { |
215 | if (itp->it_value.tv_sec == 0) { | |
216 | usec -= itp->it_value.tv_usec; | |
b6f30e0a | 217 | goto expire; |
1edb1cf8 BJ |
218 | } |
219 | itp->it_value.tv_usec += 1000000; | |
220 | itp->it_value.tv_sec--; | |
aac7ea5b | 221 | } |
1edb1cf8 BJ |
222 | itp->it_value.tv_usec -= usec; |
223 | usec = 0; | |
224 | if (timerisset(&itp->it_value)) | |
b6f30e0a BJ |
225 | return (1); |
226 | expire: | |
1edb1cf8 BJ |
227 | if (timerisset(&itp->it_interval)) { |
228 | itp->it_value = itp->it_interval; | |
229 | itp->it_value.tv_usec -= usec; | |
230 | if (itp->it_value.tv_usec < 0) { | |
231 | itp->it_value.tv_usec += 1000000; | |
232 | itp->it_value.tv_sec--; | |
233 | } | |
234 | } else | |
235 | itp->it_value.tv_usec = 0; | |
b6f30e0a | 236 | return (0); |
aac7ea5b BJ |
237 | } |
238 | ||
b6f30e0a BJ |
239 | #ifndef NOCOMPAT |
240 | otime() | |
241 | { | |
242 | ||
243 | u.u_r.r_time = time.tv_sec; | |
244 | } | |
245 | ||
1edb1cf8 BJ |
246 | ostime() |
247 | { | |
248 | register struct a { | |
249 | int time; | |
250 | } *uap = (struct a *)u.u_ap; | |
251 | struct timeval tv; | |
252 | ||
253 | tv.tv_sec = uap->time; | |
254 | tv.tv_usec = 0; | |
255 | setthetime(&tv); | |
256 | } | |
257 | ||
b6f30e0a BJ |
258 | #include "../h/timeb.h" |
259 | ||
260 | oftime() | |
aac7ea5b BJ |
261 | { |
262 | register struct a { | |
b6f30e0a | 263 | struct timeb *tp; |
aac7ea5b | 264 | } *uap; |
b6f30e0a | 265 | struct timeb t; |
aac7ea5b | 266 | |
aac7ea5b | 267 | uap = (struct a *)u.u_ap; |
b6f30e0a BJ |
268 | (void) spl7(); |
269 | t.time = time.tv_sec; | |
270 | t.millitm = time.tv_usec / 1000; | |
271 | (void) spl0(); | |
272 | t.timezone = tz.tz_minuteswest; | |
273 | t.dstflag = tz.tz_dsttime; | |
274 | if (copyout((caddr_t)&t, (caddr_t)uap->tp, sizeof(t)) < 0) | |
aac7ea5b BJ |
275 | u.u_error = EFAULT; |
276 | } | |
1edb1cf8 | 277 | #endif |