2 * Copyright (c) 1994-1995 Søren Schmidt
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software withough specific prior written permission
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * $FreeBSD: src/sys/compat/linux/linux_misc.c,v 1.85.2.9 2002/09/24 08:11:41 mdodd Exp $
29 * $DragonFly: src/sys/emulation/linux/linux_misc.c,v 1.3 2003/06/23 17:55:26 dillon Exp $
32 #include "opt_compat.h"
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/fcntl.h>
37 #include <sys/imgact_aout.h>
38 #include <sys/kernel.h>
41 #include <sys/mount.h>
42 #include <sys/namei.h>
45 #include <sys/blist.h>
46 #include <sys/reboot.h>
47 #include <sys/resourcevar.h>
48 #include <sys/signalvar.h>
50 #include <sys/sysctl.h>
51 #include <sys/sysproto.h>
53 #include <sys/unistd.h>
54 #include <sys/vmmeter.h>
55 #include <sys/vnode.h>
60 #include <vm/vm_kern.h>
61 #include <vm/vm_map.h>
62 #include <vm/vm_extern.h>
63 #include <vm/vm_object.h>
64 #include <vm/vm_zone.h>
65 #include <vm/swap_pager.h>
67 #include <machine/frame.h>
68 #include <machine/limits.h>
69 #include <machine/psl.h>
70 #include <machine/sysarch.h>
72 #include <machine/segments.h>
75 #include <posix4/sched.h>
77 #include <machine/../linux/linux.h>
78 #include <machine/../linux/linux_proto.h>
79 #include <compat/linux/linux_mib.h>
80 #include <compat/linux/linux_util.h>
83 #define BSD_TO_LINUX_SIGNAL(sig) (sig)
85 #define BSD_TO_LINUX_SIGNAL(sig) \
86 (((sig) <= LINUX_SIGTBLSZ) ? bsd_to_linux_signal[_SIG_IDX(sig)] : sig)
90 static unsigned int linux_to_bsd_resource[LINUX_RLIM_NLIMITS] = {
91 RLIMIT_CPU, RLIMIT_FSIZE, RLIMIT_DATA, RLIMIT_STACK,
92 RLIMIT_CORE, RLIMIT_RSS, RLIMIT_NPROC, RLIMIT_NOFILE,
98 l_long uptime; /* Seconds since boot */
99 l_ulong loads[3]; /* 1, 5, and 15 minute load averages */
100 l_ulong totalram; /* Total usable main memory size */
101 l_ulong freeram; /* Available memory size */
102 l_ulong sharedram; /* Amount of shared memory */
103 l_ulong bufferram; /* Memory used by buffers */
104 l_ulong totalswap; /* Total swap space size */
105 l_ulong freeswap; /* swap space still available */
106 l_ushort procs; /* Number of current processes */
107 char _f[22]; /* Pads structure to 64 bytes */
111 linux_sysinfo(struct linux_sysinfo_args *args)
113 struct l_sysinfo sysinfo;
118 /* Uptime is copied out of print_uptime() in kern_shutdown.c */
121 if (ts.tv_sec >= 86400) {
125 if (i || ts.tv_sec >= 3600) {
129 if (i || ts.tv_sec >= 60) {
133 sysinfo.uptime=ts.tv_sec;
135 /* Use the information from the mib to get our load averages */
136 for (i = 0; i < 3; i++)
137 sysinfo.loads[i] = averunnable.ldavg[i];
139 sysinfo.totalram = physmem * PAGE_SIZE;
140 sysinfo.freeram = sysinfo.totalram - cnt.v_wire_count * PAGE_SIZE;
142 sysinfo.sharedram = 0;
143 for (object = TAILQ_FIRST(&vm_object_list); object != NULL;
144 object = TAILQ_NEXT(object, object_list))
145 if (object->shadow_count > 1)
146 sysinfo.sharedram += object->resident_page_count;
148 sysinfo.sharedram *= PAGE_SIZE;
149 sysinfo.bufferram = 0;
151 if (swapblist == NULL) {
152 sysinfo.totalswap= 0;
153 sysinfo.freeswap = 0;
155 sysinfo.totalswap = swapblist->bl_blocks * 1024;
156 sysinfo.freeswap = swapblist->bl_root->u.bmu_avail * PAGE_SIZE;
159 sysinfo.procs = 20; /* Hack */
161 return copyout(&sysinfo, (caddr_t)args->info, sizeof(sysinfo));
163 #endif /*!__alpha__*/
167 linux_alarm(struct linux_alarm_args *args)
169 struct proc *p = curproc;
170 struct itimerval it, old_it;
176 printf(ARGS(alarm, "%u"), args->secs);
179 if (args->secs > 100000000)
182 it.it_value.tv_sec = (long)args->secs;
183 it.it_value.tv_usec = 0;
184 it.it_interval.tv_sec = 0;
185 it.it_interval.tv_usec = 0;
187 old_it = p->p_realtimer;
189 if (timevalisset(&old_it.it_value))
190 untimeout(realitexpire, (caddr_t)p, p->p_ithandle);
191 if (it.it_value.tv_sec != 0) {
192 p->p_ithandle = timeout(realitexpire, (caddr_t)p,
193 tvtohz(&it.it_value));
194 timevaladd(&it.it_value, &tv);
198 if (timevalcmp(&old_it.it_value, &tv, >)) {
199 timevalsub(&old_it.it_value, &tv);
200 if (old_it.it_value.tv_usec != 0)
201 old_it.it_value.tv_sec++;
202 p->p_retval[0] = old_it.it_value.tv_sec;
206 #endif /*!__alpha__*/
209 linux_brk(struct linux_brk_args *args)
211 struct proc *p = curproc;
212 struct vmspace *vm = p->p_vmspace;
213 vm_offset_t new, old;
214 struct obreak_args /* {
220 printf(ARGS(brk, "%p"), (void *)args->dsend);
222 old = (vm_offset_t)vm->vm_daddr + ctob(vm->vm_dsize);
223 new = (vm_offset_t)args->dsend;
224 tmp.nsize = (char *) new;
225 if (((caddr_t)new > vm->vm_daddr) && !obreak(&tmp))
226 p->p_retval[0] = (long)new;
228 p->p_retval[0] = (long)old;
234 linux_uselib(struct linux_uselib_args *args)
236 struct proc *p = curproc;
242 unsigned long file_offset;
244 unsigned long bss_size;
249 sg = stackgap_init();
250 CHECKALTEXIST(&sg, args->library);
254 printf(ARGS(uselib, "%s"), args->library);
261 NDINIT(&ni, LOOKUP, FOLLOW|LOCKLEAF, UIO_USERSPACE, args->library, p);
268 * XXX - This looks like a bogus check. A LOCKLEAF namei should not
269 * succeed without returning a vnode.
272 error = ENOEXEC; /* ?? */
275 NDFREE(&ni, NDF_ONLY_PNBUF);
278 * From here on down, we have a locked vnode that must be unlocked.
283 if (vp->v_writecount) {
289 error = VOP_GETATTR(vp, &attr, p->p_ucred, p);
293 if ((vp->v_mount->mnt_flag & MNT_NOEXEC) ||
294 ((attr.va_mode & 0111) == 0) || (attr.va_type != VREG)) {
300 if (attr.va_size == 0) {
305 /* Can we access it? */
306 error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p);
310 error = VOP_OPEN(vp, FREAD, p->p_ucred, p);
315 * Lock no longer needed
317 VOP_UNLOCK(vp, 0, p);
320 /* Pull in executable header into kernel_map */
321 error = vm_mmap(kernel_map, (vm_offset_t *)&a_out, PAGE_SIZE,
322 VM_PROT_READ, VM_PROT_READ, 0, (caddr_t)vp, 0);
326 /* Is it a Linux binary ? */
327 if (((a_out->a_magic >> 16) & 0xff) != 0x64) {
333 * While we are here, we should REALLY do some more checks
336 /* Set file/virtual offset based on a.out variant. */
337 switch ((int)(a_out->a_magic & 0xffff)) {
338 case 0413: /* ZMAGIC */
341 case 0314: /* QMAGIC */
349 bss_size = round_page(a_out->a_bss);
351 /* Check various fields in header for validity/bounds. */
352 if (a_out->a_text & PAGE_MASK || a_out->a_data & PAGE_MASK) {
357 /* text + data can't exceed file size */
358 if (a_out->a_data + a_out->a_text > attr.va_size) {
364 * text/data/bss must not exceed limits
365 * XXX - this is not complete. it should check current usage PLUS
366 * the resources needed by this library.
368 if (a_out->a_text > maxtsiz ||
369 a_out->a_data + bss_size > p->p_rlimit[RLIMIT_DATA].rlim_cur) {
374 /* prevent more writers */
378 * Check if file_offset page aligned. Currently we cannot handle
379 * misalinged file offsets, and so we read in the entire image
382 if (file_offset & PAGE_MASK) {
384 printf("uselib: Non page aligned binary %lu\n", file_offset);
386 /* Map text+data read/write/execute */
388 /* a_entry is the load address and is page aligned */
389 vmaddr = trunc_page(a_out->a_entry);
391 /* get anon user mapping, read+write+execute */
392 error = vm_map_find(&p->p_vmspace->vm_map, NULL, 0,
393 &vmaddr, a_out->a_text + a_out->a_data, FALSE, VM_PROT_ALL,
398 /* map file into kernel_map */
399 error = vm_mmap(kernel_map, &buffer,
400 round_page(a_out->a_text + a_out->a_data + file_offset),
401 VM_PROT_READ, VM_PROT_READ, 0, (caddr_t)vp,
402 trunc_page(file_offset));
406 /* copy from kernel VM space to user space */
407 error = copyout((caddr_t)(uintptr_t)(buffer + file_offset),
408 (caddr_t)vmaddr, a_out->a_text + a_out->a_data);
410 /* release temporary kernel space */
411 vm_map_remove(kernel_map, buffer, buffer +
412 round_page(a_out->a_text + a_out->a_data + file_offset));
418 printf("uselib: Page aligned binary %lu\n", file_offset);
421 * for QMAGIC, a_entry is 20 bytes beyond the load address
422 * to skip the executable header
424 vmaddr = trunc_page(a_out->a_entry);
427 * Map it all into the process's space as a single
428 * copy-on-write "data" segment.
430 error = vm_mmap(&p->p_vmspace->vm_map, &vmaddr,
431 a_out->a_text + a_out->a_data, VM_PROT_ALL, VM_PROT_ALL,
432 MAP_PRIVATE | MAP_FIXED, (caddr_t)vp, file_offset);
437 printf("mem=%08lx = %08lx %08lx\n", (long)vmaddr, ((long*)vmaddr)[0],
441 /* Calculate BSS start address */
442 vmaddr = trunc_page(a_out->a_entry) + a_out->a_text +
445 /* allocate some 'anon' space */
446 error = vm_map_find(&p->p_vmspace->vm_map, NULL, 0,
447 &vmaddr, bss_size, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0);
453 /* Unlock vnode if needed */
455 VOP_UNLOCK(vp, 0, p);
457 /* Release the kernel mapping. */
459 vm_map_remove(kernel_map, (vm_offset_t)a_out,
460 (vm_offset_t)a_out + PAGE_SIZE);
466 linux_select(struct linux_select_args *args)
468 struct proc *p = curproc;
469 struct select_args bsa;
470 struct timeval tv0, tv1, utv, *tvp;
476 printf(ARGS(select, "%d, %p, %p, %p, %p"), args->nfds,
477 (void *)args->readfds, (void *)args->writefds,
478 (void *)args->exceptfds, (void *)args->timeout);
483 bsa.in = args->readfds;
484 bsa.ou = args->writefds;
485 bsa.ex = args->exceptfds;
486 bsa.tv = (struct timeval *)args->timeout;
489 * Store current time for computation of the amount of
493 if ((error = copyin((caddr_t)args->timeout, &utv,
498 printf(LMSG("incoming timeout (%ld/%ld)"),
499 utv.tv_sec, utv.tv_usec);
502 if (itimerfix(&utv)) {
504 * The timeval was invalid. Convert it to something
505 * valid that will act as it does under Linux.
507 sg = stackgap_init();
508 tvp = stackgap_alloc(&sg, sizeof(utv));
509 utv.tv_sec += utv.tv_usec / 1000000;
510 utv.tv_usec %= 1000000;
511 if (utv.tv_usec < 0) {
513 utv.tv_usec += 1000000;
517 if ((error = copyout(&utv, tvp, sizeof(utv))))
524 error = select(&bsa);
527 printf(LMSG("real select returns %d"), error);
531 * See fs/select.c in the Linux kernel. Without this,
532 * Maelstrom doesn't work.
534 if (error == ERESTART)
540 if (p->p_retval[0]) {
542 * Compute how much time was left of the timeout,
543 * by subtracting the current time and the time
544 * before we started the call, and subtracting
545 * that result from the user-supplied value.
548 timevalsub(&tv1, &tv0);
549 timevalsub(&utv, &tv1);
556 printf(LMSG("outgoing timeout (%ld/%ld)"),
557 utv.tv_sec, utv.tv_usec);
559 if ((error = copyout(&utv, (caddr_t)args->timeout,
567 printf(LMSG("select_out -> %d"), error);
573 linux_mremap(struct linux_mremap_args *args)
575 struct proc *p = curproc;
576 struct munmap_args /* {
584 printf(ARGS(mremap, "%p, %08lx, %08lx, %08lx"),
586 (unsigned long)args->old_len,
587 (unsigned long)args->new_len,
588 (unsigned long)args->flags);
590 args->new_len = round_page(args->new_len);
591 args->old_len = round_page(args->old_len);
593 if (args->new_len > args->old_len) {
598 if (args->new_len < args->old_len) {
599 bsd_args.addr = (caddr_t)(args->addr + args->new_len);
600 bsd_args.len = args->old_len - args->new_len;
601 error = munmap(&bsd_args);
604 p->p_retval[0] = error ? 0 : (u_long)args->addr;
608 #define LINUX_MS_ASYNC 0x0001
609 #define LINUX_MS_INVALIDATE 0x0002
610 #define LINUX_MS_SYNC 0x0004
613 linux_msync(struct linux_msync_args *args)
615 struct msync_args bsd_args;
617 bsd_args.addr = (caddr_t)args->addr;
618 bsd_args.len = args->len;
619 bsd_args.flags = args->fl & ~LINUX_MS_SYNC;
621 return msync(&bsd_args);
626 linux_time(struct linux_time_args *args)
628 struct proc *p = curproc;
635 printf(ARGS(time, "*"));
640 if (args->tm && (error = copyout(&tm, (caddr_t)args->tm, sizeof(tm))))
645 #endif /*!__alpha__*/
647 struct l_times_argv {
655 #define CLK_TCK 1024 /* Linux uses 1024 on alpha */
657 #define CLK_TCK 100 /* Linux uses 100 */
660 #define CONVTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK))
663 linux_times(struct linux_times_args *args)
665 struct proc *p = curproc;
667 struct l_times_argv tms;
673 printf(ARGS(times, "*"));
676 calcru(p, &ru.ru_utime, &ru.ru_stime, NULL);
678 tms.tms_utime = CONVTCK(ru.ru_utime);
679 tms.tms_stime = CONVTCK(ru.ru_stime);
681 tms.tms_cutime = CONVTCK(p->p_stats->p_cru.ru_utime);
682 tms.tms_cstime = CONVTCK(p->p_stats->p_cru.ru_stime);
684 if ((error = copyout(&tms, (caddr_t)args->buf, sizeof(tms))))
688 p->p_retval[0] = (int)CONVTCK(tv);
693 linux_newuname(struct linux_newuname_args *args)
695 struct proc *p = curproc;
696 struct l_new_utsname utsname;
697 char *osrelease, *osname;
700 if (ldebug(newuname))
701 printf(ARGS(newuname, "*"));
704 osname = linux_get_osname(p);
705 osrelease = linux_get_osrelease(p);
707 bzero(&utsname, sizeof(utsname));
708 strncpy(utsname.sysname, osname, LINUX_MAX_UTSNAME-1);
709 strncpy(utsname.nodename, hostname, LINUX_MAX_UTSNAME-1);
710 strncpy(utsname.release, osrelease, LINUX_MAX_UTSNAME-1);
711 strncpy(utsname.version, version, LINUX_MAX_UTSNAME-1);
712 strncpy(utsname.machine, machine, LINUX_MAX_UTSNAME-1);
713 strncpy(utsname.domainname, domainname, LINUX_MAX_UTSNAME-1);
715 return (copyout(&utsname, (caddr_t)args->buf, sizeof(utsname)));
718 #if defined(__i386__)
725 linux_utime(struct linux_utime_args *args)
727 struct utimes_args /* {
729 struct timeval *tptr;
731 struct timeval tv[2], *tvp;
732 struct l_utimbuf lut;
736 sg = stackgap_init();
737 CHECKALTEXIST(&sg, args->fname);
741 printf(ARGS(utime, "%s, *"), args->fname);
745 if ((error = copyin((caddr_t)args->times, &lut, sizeof lut)))
747 tv[0].tv_sec = lut.l_actime;
749 tv[1].tv_sec = lut.l_modtime;
751 /* so that utimes can copyin */
752 tvp = (struct timeval *)stackgap_alloc(&sg, sizeof(tv));
754 return (ENAMETOOLONG);
755 if ((error = copyout(tv, tvp, sizeof(tv))))
757 bsdutimes.tptr = tvp;
759 bsdutimes.tptr = NULL;
761 bsdutimes.path = args->fname;
762 return utimes(&bsdutimes);
764 #endif /* __i386__ */
766 #define __WCLONE 0x80000000
770 linux_waitpid(struct linux_waitpid_args *args)
772 struct wait_args /* {
776 struct rusage *rusage;
782 printf(ARGS(waitpid, "%d, %p, %d"),
783 args->pid, (void *)args->status, args->options);
787 tmp.status = args->status;
788 tmp.options = (args->options & (WNOHANG | WUNTRACED));
789 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */
790 if (args->options & __WCLONE)
791 tmp.options |= WLINUXCLONE;
794 if ((error = wait4(&tmp)) != 0)
798 if ((error = copyin((caddr_t)args->status, &tmpstat,
802 if (WIFSIGNALED(tmpstat))
803 tmpstat = (tmpstat & 0xffffff80) |
804 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat));
805 else if (WIFSTOPPED(tmpstat))
806 tmpstat = (tmpstat & 0xffff00ff) |
807 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8);
808 return copyout(&tmpstat, (caddr_t)args->status, sizeof(int));
813 #endif /*!__alpha__*/
816 linux_wait4(struct linux_wait4_args *args)
818 struct proc *p = curproc;
819 struct wait_args /* {
823 struct rusage *rusage;
829 printf(ARGS(wait4, "%d, %p, %d, %p"),
830 args->pid, (void *)args->status, args->options,
831 (void *)args->rusage);
835 tmp.status = args->status;
836 tmp.options = (args->options & (WNOHANG | WUNTRACED));
837 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */
838 if (args->options & __WCLONE)
839 tmp.options |= WLINUXCLONE;
840 tmp.rusage = (struct rusage *)args->rusage;
842 if ((error = wait4(&tmp)) != 0)
845 SIGDELSET(p->p_siglist, SIGCHLD);
848 if ((error = copyin((caddr_t)args->status, &tmpstat,
852 if (WIFSIGNALED(tmpstat))
853 tmpstat = (tmpstat & 0xffffff80) |
854 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat));
855 else if (WIFSTOPPED(tmpstat))
856 tmpstat = (tmpstat & 0xffff00ff) |
857 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8);
858 return copyout(&tmpstat, (caddr_t)args->status, sizeof(int));
865 linux_mknod(struct linux_mknod_args *args)
868 struct mknod_args bsd_mknod;
869 struct mkfifo_args bsd_mkfifo;
871 sg = stackgap_init();
873 CHECKALTCREAT(&sg, args->path);
877 printf(ARGS(mknod, "%s, %d, %d"),
878 args->path, args->mode, args->dev);
881 if (args->mode & S_IFIFO) {
882 bsd_mkfifo.path = args->path;
883 bsd_mkfifo.mode = args->mode;
884 return mkfifo(&bsd_mkfifo);
886 bsd_mknod.path = args->path;
887 bsd_mknod.mode = args->mode;
888 bsd_mknod.dev = args->dev;
889 return mknod(&bsd_mknod);
894 * UGH! This is just about the dumbest idea I've ever heard!!
897 linux_personality(struct linux_personality_args *args)
899 struct proc *p = curproc;
901 if (ldebug(personality))
902 printf(ARGS(personality, "%d"), args->per);
909 /* Yes Jim, it's still a Linux... */
915 * Wrappers for get/setitimer for debugging..
918 linux_setitimer(struct linux_setitimer_args *args)
920 struct setitimer_args bsa;
921 struct itimerval foo;
925 if (ldebug(setitimer))
926 printf(ARGS(setitimer, "%p, %p"),
927 (void *)args->itv, (void *)args->oitv);
929 bsa.which = args->which;
930 bsa.itv = (struct itimerval *)args->itv;
931 bsa.oitv = (struct itimerval *)args->oitv;
933 if ((error = copyin((caddr_t)args->itv, &foo, sizeof(foo))))
936 if (ldebug(setitimer)) {
937 printf("setitimer: value: sec: %ld, usec: %ld\n",
938 foo.it_value.tv_sec, foo.it_value.tv_usec);
939 printf("setitimer: interval: sec: %ld, usec: %ld\n",
940 foo.it_interval.tv_sec, foo.it_interval.tv_usec);
944 return setitimer(&bsa);
948 linux_getitimer(struct linux_getitimer_args *args)
950 struct getitimer_args bsa;
952 if (ldebug(getitimer))
953 printf(ARGS(getitimer, "%p"), (void *)args->itv);
955 bsa.which = args->which;
956 bsa.itv = (struct itimerval *)args->itv;
957 return getitimer(&bsa);
962 linux_nice(struct linux_nice_args *args)
964 struct setpriority_args bsd_args;
966 bsd_args.which = PRIO_PROCESS;
967 bsd_args.who = 0; /* current process */
968 bsd_args.prio = args->inc;
969 return setpriority(&bsd_args);
971 #endif /*!__alpha__*/
974 linux_setgroups(struct linux_setgroups_args *args)
976 struct proc *p = curproc;
977 struct ucred *newcred, *oldcred;
978 l_gid_t linux_gidset[NGROUPS];
982 ngrp = args->gidsetsize;
983 oldcred = p->p_ucred;
986 * cr_groups[0] holds egid. Setting the whole set from
987 * the supplied set will cause egid to be changed too.
988 * Keep cr_groups[0] unchanged to prevent that.
991 if ((error = suser_xxx(oldcred, PRISON_ROOT)) != 0)
997 newcred = crdup(oldcred);
999 error = copyin((caddr_t)args->grouplist, linux_gidset,
1000 ngrp * sizeof(l_gid_t));
1004 newcred->cr_ngroups = ngrp + 1;
1006 bsd_gidset = newcred->cr_groups;
1009 bsd_gidset[ngrp + 1] = linux_gidset[ngrp];
1013 newcred->cr_ngroups = 1;
1017 p->p_ucred = newcred;
1023 linux_getgroups(struct linux_getgroups_args *args)
1025 struct proc *p = curproc;
1027 l_gid_t linux_gidset[NGROUPS];
1029 int bsd_gidsetsz, ngrp, error;
1032 bsd_gidset = cred->cr_groups;
1033 bsd_gidsetsz = cred->cr_ngroups - 1;
1036 * cr_groups[0] holds egid. Returning the whole set
1037 * here will cause a duplicate. Exclude cr_groups[0]
1041 if ((ngrp = args->gidsetsize) == 0) {
1042 p->p_retval[0] = bsd_gidsetsz;
1046 if (ngrp < bsd_gidsetsz)
1050 while (ngrp < bsd_gidsetsz) {
1051 linux_gidset[ngrp] = bsd_gidset[ngrp + 1];
1055 if ((error = copyout(linux_gidset, (caddr_t)args->grouplist,
1056 ngrp * sizeof(l_gid_t))))
1059 p->p_retval[0] = ngrp;
1065 linux_setrlimit(struct linux_setrlimit_args *args)
1067 struct __setrlimit_args bsd;
1068 struct l_rlimit rlim;
1070 caddr_t sg = stackgap_init();
1073 if (ldebug(setrlimit))
1074 printf(ARGS(setrlimit, "%d, %p"),
1075 args->resource, (void *)args->rlim);
1078 if (args->resource >= LINUX_RLIM_NLIMITS)
1081 bsd.which = linux_to_bsd_resource[args->resource];
1082 if (bsd.which == -1)
1085 error = copyin((caddr_t)args->rlim, &rlim, sizeof(rlim));
1089 bsd.rlp = stackgap_alloc(&sg, sizeof(struct rlimit));
1090 bsd.rlp->rlim_cur = (rlim_t)rlim.rlim_cur;
1091 bsd.rlp->rlim_max = (rlim_t)rlim.rlim_max;
1092 return (setrlimit(&bsd));
1096 linux_old_getrlimit(struct linux_old_getrlimit_args *args)
1098 struct __getrlimit_args bsd;
1099 struct l_rlimit rlim;
1101 caddr_t sg = stackgap_init();
1104 if (ldebug(old_getrlimit))
1105 printf(ARGS(old_getrlimit, "%d, %p"),
1106 args->resource, (void *)args->rlim);
1109 if (args->resource >= LINUX_RLIM_NLIMITS)
1112 bsd.which = linux_to_bsd_resource[args->resource];
1113 if (bsd.which == -1)
1116 bsd.rlp = stackgap_alloc(&sg, sizeof(struct rlimit));
1117 error = getrlimit(&bsd);
1121 rlim.rlim_cur = (unsigned long)bsd.rlp->rlim_cur;
1122 if (rlim.rlim_cur == ULONG_MAX)
1123 rlim.rlim_cur = LONG_MAX;
1124 rlim.rlim_max = (unsigned long)bsd.rlp->rlim_max;
1125 if (rlim.rlim_max == ULONG_MAX)
1126 rlim.rlim_max = LONG_MAX;
1127 return (copyout(&rlim, (caddr_t)args->rlim, sizeof(rlim)));
1131 linux_getrlimit(struct linux_getrlimit_args *args)
1133 struct __getrlimit_args bsd;
1134 struct l_rlimit rlim;
1136 caddr_t sg = stackgap_init();
1139 if (ldebug(getrlimit))
1140 printf(ARGS(getrlimit, "%d, %p"),
1141 args->resource, (void *)args->rlim);
1144 if (args->resource >= LINUX_RLIM_NLIMITS)
1147 bsd.which = linux_to_bsd_resource[args->resource];
1148 if (bsd.which == -1)
1151 bsd.rlp = stackgap_alloc(&sg, sizeof(struct rlimit));
1152 error = getrlimit(&bsd);
1156 rlim.rlim_cur = (l_ulong)bsd.rlp->rlim_cur;
1157 rlim.rlim_max = (l_ulong)bsd.rlp->rlim_max;
1158 return (copyout(&rlim, (caddr_t)args->rlim, sizeof(rlim)));
1160 #endif /*!__alpha__*/
1163 linux_sched_setscheduler(struct linux_sched_setscheduler_args *args)
1165 struct sched_setscheduler_args bsd;
1168 if (ldebug(sched_setscheduler))
1169 printf(ARGS(sched_setscheduler, "%d, %d, %p"),
1170 args->pid, args->policy, (const void *)args->param);
1173 switch (args->policy) {
1174 case LINUX_SCHED_OTHER:
1175 bsd.policy = SCHED_OTHER;
1177 case LINUX_SCHED_FIFO:
1178 bsd.policy = SCHED_FIFO;
1180 case LINUX_SCHED_RR:
1181 bsd.policy = SCHED_RR;
1187 bsd.pid = args->pid;
1188 bsd.param = (struct sched_param *)args->param;
1189 return sched_setscheduler(&bsd);
1193 linux_sched_getscheduler(struct linux_sched_getscheduler_args *args)
1195 struct proc *p = curproc;
1196 struct sched_getscheduler_args bsd;
1200 if (ldebug(sched_getscheduler))
1201 printf(ARGS(sched_getscheduler, "%d"), args->pid);
1204 bsd.pid = args->pid;
1205 error = sched_getscheduler(&bsd);
1207 switch (p->p_retval[0]) {
1209 p->p_retval[0] = LINUX_SCHED_OTHER;
1212 p->p_retval[0] = LINUX_SCHED_FIFO;
1215 p->p_retval[0] = LINUX_SCHED_RR;
1223 linux_sched_get_priority_max(struct linux_sched_get_priority_max_args *args)
1225 struct sched_get_priority_max_args bsd;
1228 if (ldebug(sched_get_priority_max))
1229 printf(ARGS(sched_get_priority_max, "%d"), args->policy);
1232 switch (args->policy) {
1233 case LINUX_SCHED_OTHER:
1234 bsd.policy = SCHED_OTHER;
1236 case LINUX_SCHED_FIFO:
1237 bsd.policy = SCHED_FIFO;
1239 case LINUX_SCHED_RR:
1240 bsd.policy = SCHED_RR;
1245 return sched_get_priority_max(&bsd);
1249 linux_sched_get_priority_min(struct linux_sched_get_priority_min_args *args)
1251 struct sched_get_priority_min_args bsd;
1254 if (ldebug(sched_get_priority_min))
1255 printf(ARGS(sched_get_priority_min, "%d"), args->policy);
1258 switch (args->policy) {
1259 case LINUX_SCHED_OTHER:
1260 bsd.policy = SCHED_OTHER;
1262 case LINUX_SCHED_FIFO:
1263 bsd.policy = SCHED_FIFO;
1265 case LINUX_SCHED_RR:
1266 bsd.policy = SCHED_RR;
1271 return sched_get_priority_min(&bsd);
1274 #define REBOOT_CAD_ON 0x89abcdef
1275 #define REBOOT_CAD_OFF 0
1276 #define REBOOT_HALT 0xcdef0123
1279 linux_reboot(struct linux_reboot_args *args)
1281 struct reboot_args bsd_args;
1285 printf(ARGS(reboot, "0x%x"), args->cmd);
1287 if (args->cmd == REBOOT_CAD_ON || args->cmd == REBOOT_CAD_OFF)
1289 bsd_args.opt = (args->cmd == REBOOT_HALT) ? RB_HALT : 0;
1290 return (reboot(&bsd_args));
1296 * The FreeBSD native getpid(2), getgid(2) and getuid(2) also modify
1297 * p->p_retval[1] when COMPAT_43 or COMPAT_SUNOS is defined. This
1298 * globbers registers that are assumed to be preserved. The following
1299 * lightweight syscalls fixes this. See also linux_getgid16() and
1300 * linux_getuid16() in linux_uid16.c.
1302 * linux_getpid() - MP SAFE
1303 * linux_getgid() - MP SAFE
1304 * linux_getuid() - MP SAFE
1308 linux_getpid(struct linux_getpid_args *args)
1310 struct proc *p = curproc;
1312 p->p_retval[0] = p->p_pid;
1317 linux_getgid(struct linux_getgid_args *args)
1319 struct proc *p = curproc;
1321 p->p_retval[0] = p->p_ucred->cr_rgid;
1326 linux_getuid(struct linux_getuid_args *args)
1328 struct proc *p = curproc;
1330 p->p_retval[0] = p->p_ucred->cr_ruid;
1334 #endif /*!__alpha__*/
1337 linux_getsid(struct linux_getsid_args *args)
1339 struct getsid_args bsd;
1340 bsd.pid = args->pid;
1341 return getsid(&bsd);