| 1 | /* |
| 2 | * Copyright (c) 1982 Regents of the University of California. |
| 3 | * All rights reserved. The Berkeley software License Agreement |
| 4 | * specifies the terms and conditions for redistribution. |
| 5 | * |
| 6 | * @(#)kern_xxx.c 6.7 (Berkeley) %G% |
| 7 | */ |
| 8 | |
| 9 | #include "param.h" |
| 10 | #include "systm.h" |
| 11 | #include "dir.h" |
| 12 | #include "user.h" |
| 13 | #include "kernel.h" |
| 14 | #include "proc.h" |
| 15 | #include "reboot.h" |
| 16 | |
| 17 | gethostid() |
| 18 | { |
| 19 | |
| 20 | u.u_r.r_val1 = hostid; |
| 21 | } |
| 22 | |
| 23 | sethostid() |
| 24 | { |
| 25 | struct a { |
| 26 | long hostid; |
| 27 | } *uap = (struct a *)u.u_ap; |
| 28 | |
| 29 | if (suser()) |
| 30 | hostid = uap->hostid; |
| 31 | } |
| 32 | |
| 33 | gethostname() |
| 34 | { |
| 35 | register struct a { |
| 36 | char *hostname; |
| 37 | u_int len; |
| 38 | } *uap = (struct a *)u.u_ap; |
| 39 | register u_int len; |
| 40 | |
| 41 | len = uap->len; |
| 42 | if (len > hostnamelen + 1) |
| 43 | len = hostnamelen + 1; |
| 44 | u.u_error = copyout((caddr_t)hostname, (caddr_t)uap->hostname, len); |
| 45 | } |
| 46 | |
| 47 | sethostname() |
| 48 | { |
| 49 | register struct a { |
| 50 | char *hostname; |
| 51 | u_int len; |
| 52 | } *uap = (struct a *)u.u_ap; |
| 53 | |
| 54 | if (!suser()) |
| 55 | return; |
| 56 | if (uap->len > sizeof (hostname) - 1) { |
| 57 | u.u_error = EINVAL; |
| 58 | return; |
| 59 | } |
| 60 | hostnamelen = uap->len; |
| 61 | u.u_error = copyin((caddr_t)uap->hostname, hostname, uap->len); |
| 62 | hostname[hostnamelen] = 0; |
| 63 | } |
| 64 | |
| 65 | reboot() |
| 66 | { |
| 67 | register struct a { |
| 68 | int opt; |
| 69 | }; |
| 70 | |
| 71 | if (suser()) |
| 72 | boot(RB_BOOT, ((struct a *)u.u_ap)->opt); |
| 73 | } |
| 74 | |
| 75 | #ifdef COMPAT |
| 76 | #include "../h/quota.h" |
| 77 | |
| 78 | osetuid() |
| 79 | { |
| 80 | register uid; |
| 81 | register struct a { |
| 82 | int uid; |
| 83 | } *uap; |
| 84 | |
| 85 | uap = (struct a *)u.u_ap; |
| 86 | uid = uap->uid; |
| 87 | if (u.u_ruid == uid || u.u_uid == uid || suser()) { |
| 88 | #ifdef QUOTA |
| 89 | if (u.u_quota->q_uid != uid) { |
| 90 | qclean(); |
| 91 | qstart(getquota(uid, 0, 0)); |
| 92 | } |
| 93 | #endif |
| 94 | u.u_uid = uid; |
| 95 | u.u_procp->p_uid = uid; |
| 96 | u.u_ruid = uid; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | osetgid() |
| 101 | { |
| 102 | register gid; |
| 103 | register struct a { |
| 104 | int gid; |
| 105 | } *uap; |
| 106 | |
| 107 | uap = (struct a *)u.u_ap; |
| 108 | gid = uap->gid; |
| 109 | if (u.u_rgid == gid || u.u_gid == gid || suser()) { |
| 110 | leavegroup(u.u_rgid); |
| 111 | (void) entergroup(gid); |
| 112 | u.u_gid = gid; |
| 113 | u.u_rgid = gid; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | /* |
| 118 | * Pid of zero implies current process. |
| 119 | * Pgrp -1 is getpgrp system call returning |
| 120 | * current process group. |
| 121 | */ |
| 122 | osetpgrp() |
| 123 | { |
| 124 | register struct proc *p; |
| 125 | register struct a { |
| 126 | int pid; |
| 127 | int pgrp; |
| 128 | } *uap; |
| 129 | |
| 130 | uap = (struct a *)u.u_ap; |
| 131 | if (uap->pid == 0) |
| 132 | p = u.u_procp; |
| 133 | else { |
| 134 | p = pfind(uap->pid); |
| 135 | if (p == 0) { |
| 136 | u.u_error = ESRCH; |
| 137 | return; |
| 138 | } |
| 139 | } |
| 140 | if (uap->pgrp <= 0) { |
| 141 | u.u_r.r_val1 = p->p_pgrp; |
| 142 | return; |
| 143 | } |
| 144 | if (p->p_uid != u.u_uid && u.u_uid && !inferior(p)) { |
| 145 | u.u_error = EPERM; |
| 146 | return; |
| 147 | } |
| 148 | p->p_pgrp = uap->pgrp; |
| 149 | } |
| 150 | |
| 151 | otime() |
| 152 | { |
| 153 | |
| 154 | u.u_r.r_time = time.tv_sec; |
| 155 | } |
| 156 | |
| 157 | ostime() |
| 158 | { |
| 159 | register struct a { |
| 160 | int time; |
| 161 | } *uap = (struct a *)u.u_ap; |
| 162 | struct timeval tv; |
| 163 | |
| 164 | tv.tv_sec = uap->time; |
| 165 | tv.tv_usec = 0; |
| 166 | setthetime(&tv); |
| 167 | } |
| 168 | |
| 169 | /* from old timeb.h */ |
| 170 | struct timeb { |
| 171 | time_t time; |
| 172 | u_short millitm; |
| 173 | short timezone; |
| 174 | short dstflag; |
| 175 | }; |
| 176 | |
| 177 | oftime() |
| 178 | { |
| 179 | register struct a { |
| 180 | struct timeb *tp; |
| 181 | } *uap; |
| 182 | struct timeb tb; |
| 183 | int s; |
| 184 | |
| 185 | uap = (struct a *)u.u_ap; |
| 186 | s = splhigh(); |
| 187 | tb.time = time.tv_sec; |
| 188 | tb.millitm = time.tv_usec / 1000; |
| 189 | splx(s); |
| 190 | tb.timezone = tz.tz_minuteswest; |
| 191 | tb.dstflag = tz.tz_dsttime; |
| 192 | u.u_error = copyout((caddr_t)&tb, (caddr_t)uap->tp, sizeof (tb)); |
| 193 | } |
| 194 | |
| 195 | oalarm() |
| 196 | { |
| 197 | register struct a { |
| 198 | int deltat; |
| 199 | } *uap = (struct a *)u.u_ap; |
| 200 | register struct proc *p = u.u_procp; |
| 201 | int s = splhigh(); |
| 202 | |
| 203 | untimeout(realitexpire, (caddr_t)p); |
| 204 | timerclear(&p->p_realtimer.it_interval); |
| 205 | u.u_r.r_val1 = 0; |
| 206 | if (timerisset(&p->p_realtimer.it_value) && |
| 207 | timercmp(&p->p_realtimer.it_value, &time, >)) |
| 208 | u.u_r.r_val1 = p->p_realtimer.it_value.tv_sec - time.tv_sec; |
| 209 | if (uap->deltat == 0) { |
| 210 | timerclear(&p->p_realtimer.it_value); |
| 211 | splx(s); |
| 212 | return; |
| 213 | } |
| 214 | p->p_realtimer.it_value = time; |
| 215 | p->p_realtimer.it_value.tv_sec += uap->deltat; |
| 216 | timeout(realitexpire, (caddr_t)p, hzto(&p->p_realtimer.it_value)); |
| 217 | splx(s); |
| 218 | } |
| 219 | |
| 220 | onice() |
| 221 | { |
| 222 | register struct a { |
| 223 | int niceness; |
| 224 | } *uap = (struct a *)u.u_ap; |
| 225 | register struct proc *p = u.u_procp; |
| 226 | |
| 227 | donice(p, (p->p_nice-NZERO)+uap->niceness); |
| 228 | } |
| 229 | |
| 230 | #include "../h/times.h" |
| 231 | |
| 232 | otimes() |
| 233 | { |
| 234 | register struct a { |
| 235 | struct tms *tmsb; |
| 236 | } *uap = (struct a *)u.u_ap; |
| 237 | struct tms atms; |
| 238 | |
| 239 | atms.tms_utime = scale60(&u.u_ru.ru_utime); |
| 240 | atms.tms_stime = scale60(&u.u_ru.ru_stime); |
| 241 | atms.tms_cutime = scale60(&u.u_cru.ru_utime); |
| 242 | atms.tms_cstime = scale60(&u.u_cru.ru_stime); |
| 243 | u.u_error = copyout((caddr_t)&atms, (caddr_t)uap->tmsb, sizeof (atms)); |
| 244 | } |
| 245 | |
| 246 | scale60(tvp) |
| 247 | register struct timeval *tvp; |
| 248 | { |
| 249 | |
| 250 | return (tvp->tv_sec * 60 + tvp->tv_usec / 16667); |
| 251 | } |
| 252 | |
| 253 | #include "../h/vtimes.h" |
| 254 | |
| 255 | ovtimes() |
| 256 | { |
| 257 | register struct a { |
| 258 | struct vtimes *par; |
| 259 | struct vtimes *chi; |
| 260 | } *uap = (struct a *)u.u_ap; |
| 261 | struct vtimes avt; |
| 262 | |
| 263 | if (uap->par) { |
| 264 | getvtimes(&u.u_ru, &avt); |
| 265 | u.u_error = copyout((caddr_t)&avt, (caddr_t)uap->par, |
| 266 | sizeof (avt)); |
| 267 | if (u.u_error) |
| 268 | return; |
| 269 | } |
| 270 | if (uap->chi) { |
| 271 | getvtimes(&u.u_cru, &avt); |
| 272 | u.u_error = copyout((caddr_t)&avt, (caddr_t)uap->chi, |
| 273 | sizeof (avt)); |
| 274 | if (u.u_error) |
| 275 | return; |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | #include "../machine/psl.h" |
| 280 | #include "../machine/reg.h" |
| 281 | |
| 282 | owait() |
| 283 | { |
| 284 | struct rusage ru; |
| 285 | struct vtimes *vtp, avt; |
| 286 | |
| 287 | if ((u.u_ar0[PS] & PSL_ALLCC) != PSL_ALLCC) { |
| 288 | u.u_error = wait1(0, (struct rusage *)0); |
| 289 | return; |
| 290 | } |
| 291 | vtp = (struct vtimes *)u.u_ar0[R1]; |
| 292 | u.u_error = wait1(u.u_ar0[R0], &ru); |
| 293 | if (u.u_error) |
| 294 | return; |
| 295 | getvtimes(&ru, &avt); |
| 296 | (void) copyout((caddr_t)&avt, (caddr_t)vtp, sizeof (struct vtimes)); |
| 297 | } |
| 298 | |
| 299 | getvtimes(aru, avt) |
| 300 | register struct rusage *aru; |
| 301 | register struct vtimes *avt; |
| 302 | { |
| 303 | |
| 304 | avt->vm_utime = scale60(&aru->ru_utime); |
| 305 | avt->vm_stime = scale60(&aru->ru_stime); |
| 306 | avt->vm_idsrss = ((aru->ru_idrss+aru->ru_isrss) / hz) * 60; |
| 307 | avt->vm_ixrss = aru->ru_ixrss / hz * 60; |
| 308 | avt->vm_maxrss = aru->ru_maxrss; |
| 309 | avt->vm_majflt = aru->ru_majflt; |
| 310 | avt->vm_minflt = aru->ru_minflt; |
| 311 | avt->vm_nswap = aru->ru_nswap; |
| 312 | avt->vm_inblk = aru->ru_inblock; |
| 313 | avt->vm_oublk = aru->ru_oublock; |
| 314 | } |
| 315 | |
| 316 | ovlimit() |
| 317 | { |
| 318 | |
| 319 | u.u_error = EACCES; |
| 320 | } |
| 321 | |
| 322 | ossig() |
| 323 | { |
| 324 | struct a { |
| 325 | int signo; |
| 326 | int (*fun)(); |
| 327 | } *uap = (struct a *)u.u_ap; |
| 328 | register int a; |
| 329 | struct sigvec vec; |
| 330 | register struct sigvec *sv = &vec; |
| 331 | struct proc *p = u.u_procp; |
| 332 | |
| 333 | a = uap->signo; |
| 334 | sv->sv_handler = uap->fun; |
| 335 | /* |
| 336 | * Kill processes trying to use job control facilities |
| 337 | * (this'll help us find any vestiges of the old stuff). |
| 338 | */ |
| 339 | if ((a &~ 0377) || |
| 340 | (sv->sv_handler != SIG_DFL && sv->sv_handler != SIG_IGN && |
| 341 | ((int)sv->sv_handler) & 1)) { |
| 342 | psignal(p, SIGSYS); |
| 343 | return; |
| 344 | } |
| 345 | if (a <= 0 || a >= NSIG || a == SIGKILL || a == SIGSTOP || |
| 346 | a == SIGCONT && sv->sv_handler == SIG_IGN) { |
| 347 | u.u_error = EINVAL; |
| 348 | return; |
| 349 | } |
| 350 | sv->sv_mask = 0; |
| 351 | sv->sv_flags = SV_INTERRUPT; |
| 352 | u.u_r.r_val1 = (int)u.u_signal[a]; |
| 353 | setsigvec(a, sv); |
| 354 | p->p_flag |= SOUSIG; /* mark as simulating old stuff */ |
| 355 | } |
| 356 | #endif |