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 1.14 2003/09/23 05:03:51 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>
44 #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 <emulation/posix4/sched.h>
77 #include <arch_linux/linux.h>
78 #include <arch_linux/linux_proto.h>
79 #include "linux_mib.h"
80 #include "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 - vmstats.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 thread *td = curthread;
170 struct proc *p = td->td_proc;
171 struct itimerval it, old_it;
179 printf(ARGS(alarm, "%u"), args->secs);
182 if (args->secs > 100000000)
185 it.it_value.tv_sec = (long)args->secs;
186 it.it_value.tv_usec = 0;
187 it.it_interval.tv_sec = 0;
188 it.it_interval.tv_usec = 0;
190 old_it = p->p_realtimer;
192 if (timevalisset(&old_it.it_value))
193 untimeout(realitexpire, (caddr_t)p, p->p_ithandle);
194 if (it.it_value.tv_sec != 0) {
195 p->p_ithandle = timeout(realitexpire, (caddr_t)p,
196 tvtohz(&it.it_value));
197 timevaladd(&it.it_value, &tv);
201 if (timevalcmp(&old_it.it_value, &tv, >)) {
202 timevalsub(&old_it.it_value, &tv);
203 if (old_it.it_value.tv_usec != 0)
204 old_it.it_value.tv_sec++;
205 args->sysmsg_result = old_it.it_value.tv_sec;
209 #endif /*!__alpha__*/
212 linux_brk(struct linux_brk_args *args)
214 struct thread *td = curthread;
215 struct proc *p = td->td_proc;
217 vm_offset_t new, old;
218 struct obreak_args bsd_args;
224 printf(ARGS(brk, "%p"), (void *)args->dsend);
226 old = (vm_offset_t)vm->vm_daddr + ctob(vm->vm_dsize);
227 new = (vm_offset_t)args->dsend;
228 bsd_args.sysmsg_result = 0;
229 bsd_args.nsize = (char *) new;
230 bsd_args.sysmsg_result = 0;
231 if (((caddr_t)new > vm->vm_daddr) && !obreak(&bsd_args))
232 args->sysmsg_result = (long)new;
234 args->sysmsg_result = (long)old;
240 linux_uselib(struct linux_uselib_args *args)
242 struct thread *td = curthread;
249 unsigned long file_offset;
251 unsigned long bss_size;
256 KKASSERT(td->td_proc);
259 sg = stackgap_init();
260 CHECKALTEXIST(&sg, args->library);
264 printf(ARGS(uselib, "%s"), args->library);
271 NDINIT(&ni, NAMEI_LOOKUP, CNP_FOLLOW | CNP_LOCKLEAF,
272 UIO_USERSPACE, args->library, td);
279 * XXX - This looks like a bogus check. A LOCKLEAF namei should not
280 * succeed without returning a vnode.
283 error = ENOEXEC; /* ?? */
286 NDFREE(&ni, NDF_ONLY_PNBUF);
289 * From here on down, we have a locked vnode that must be unlocked.
294 if (vp->v_writecount) {
300 error = VOP_GETATTR(vp, &attr, td);
304 if ((vp->v_mount->mnt_flag & MNT_NOEXEC) ||
305 ((attr.va_mode & 0111) == 0) || (attr.va_type != VREG)) {
311 if (attr.va_size == 0) {
316 /* Can we access it? */
317 error = VOP_ACCESS(vp, VEXEC, p->p_ucred, td);
321 error = VOP_OPEN(vp, FREAD, p->p_ucred, td);
326 * Lock no longer needed
328 VOP_UNLOCK(vp, 0, td);
331 /* Pull in executable header into kernel_map */
332 error = vm_mmap(kernel_map, (vm_offset_t *)&a_out, PAGE_SIZE,
333 VM_PROT_READ, VM_PROT_READ, 0, (caddr_t)vp, 0);
337 /* Is it a Linux binary ? */
338 if (((a_out->a_magic >> 16) & 0xff) != 0x64) {
344 * While we are here, we should REALLY do some more checks
347 /* Set file/virtual offset based on a.out variant. */
348 switch ((int)(a_out->a_magic & 0xffff)) {
349 case 0413: /* ZMAGIC */
352 case 0314: /* QMAGIC */
360 bss_size = round_page(a_out->a_bss);
362 /* Check various fields in header for validity/bounds. */
363 if (a_out->a_text & PAGE_MASK || a_out->a_data & PAGE_MASK) {
368 /* text + data can't exceed file size */
369 if (a_out->a_data + a_out->a_text > attr.va_size) {
375 * text/data/bss must not exceed limits
376 * XXX - this is not complete. it should check current usage PLUS
377 * the resources needed by this library.
379 if (a_out->a_text > maxtsiz ||
380 a_out->a_data + bss_size > p->p_rlimit[RLIMIT_DATA].rlim_cur) {
385 /* prevent more writers */
389 * Check if file_offset page aligned. Currently we cannot handle
390 * misalinged file offsets, and so we read in the entire image
393 if (file_offset & PAGE_MASK) {
395 printf("uselib: Non page aligned binary %lu\n", file_offset);
397 /* Map text+data read/write/execute */
399 /* a_entry is the load address and is page aligned */
400 vmaddr = trunc_page(a_out->a_entry);
402 /* get anon user mapping, read+write+execute */
403 error = vm_map_find(&p->p_vmspace->vm_map, NULL, 0,
404 &vmaddr, a_out->a_text + a_out->a_data, FALSE, VM_PROT_ALL,
409 /* map file into kernel_map */
410 error = vm_mmap(kernel_map, &buffer,
411 round_page(a_out->a_text + a_out->a_data + file_offset),
412 VM_PROT_READ, VM_PROT_READ, 0, (caddr_t)vp,
413 trunc_page(file_offset));
417 /* copy from kernel VM space to user space */
418 error = copyout((caddr_t)(uintptr_t)(buffer + file_offset),
419 (caddr_t)vmaddr, a_out->a_text + a_out->a_data);
421 /* release temporary kernel space */
422 vm_map_remove(kernel_map, buffer, buffer +
423 round_page(a_out->a_text + a_out->a_data + file_offset));
429 printf("uselib: Page aligned binary %lu\n", file_offset);
432 * for QMAGIC, a_entry is 20 bytes beyond the load address
433 * to skip the executable header
435 vmaddr = trunc_page(a_out->a_entry);
438 * Map it all into the process's space as a single
439 * copy-on-write "data" segment.
441 error = vm_mmap(&p->p_vmspace->vm_map, &vmaddr,
442 a_out->a_text + a_out->a_data, VM_PROT_ALL, VM_PROT_ALL,
443 MAP_PRIVATE | MAP_FIXED, (caddr_t)vp, file_offset);
448 printf("mem=%08lx = %08lx %08lx\n", (long)vmaddr, ((long*)vmaddr)[0],
452 /* Calculate BSS start address */
453 vmaddr = trunc_page(a_out->a_entry) + a_out->a_text +
456 /* allocate some 'anon' space */
457 error = vm_map_find(&p->p_vmspace->vm_map, NULL, 0,
458 &vmaddr, bss_size, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0);
464 /* Unlock vnode if needed */
466 VOP_UNLOCK(vp, 0, td);
468 /* Release the kernel mapping. */
470 vm_map_remove(kernel_map, (vm_offset_t)a_out,
471 (vm_offset_t)a_out + PAGE_SIZE);
477 linux_select(struct linux_select_args *args)
479 struct select_args bsa;
480 struct timeval tv0, tv1, utv, *tvp;
486 printf(ARGS(select, "%d, %p, %p, %p, %p"), args->nfds,
487 (void *)args->readfds, (void *)args->writefds,
488 (void *)args->exceptfds, (void *)args->timeout);
492 bsa.sysmsg_result = 0;
494 bsa.in = args->readfds;
495 bsa.ou = args->writefds;
496 bsa.ex = args->exceptfds;
497 bsa.tv = (struct timeval *)args->timeout;
500 * Store current time for computation of the amount of
504 if ((error = copyin((caddr_t)args->timeout, &utv,
509 printf(LMSG("incoming timeout (%ld/%ld)"),
510 utv.tv_sec, utv.tv_usec);
513 if (itimerfix(&utv)) {
515 * The timeval was invalid. Convert it to something
516 * valid that will act as it does under Linux.
518 sg = stackgap_init();
519 tvp = stackgap_alloc(&sg, sizeof(utv));
520 utv.tv_sec += utv.tv_usec / 1000000;
521 utv.tv_usec %= 1000000;
522 if (utv.tv_usec < 0) {
524 utv.tv_usec += 1000000;
528 if ((error = copyout(&utv, tvp, sizeof(utv))))
535 error = select(&bsa);
536 args->sysmsg_result = bsa.sysmsg_result;
539 printf(LMSG("real select returns %d"), error);
543 * See fs/select.c in the Linux kernel. Without this,
544 * Maelstrom doesn't work.
546 if (error == ERESTART)
552 if (args->sysmsg_result) {
554 * Compute how much time was left of the timeout,
555 * by subtracting the current time and the time
556 * before we started the call, and subtracting
557 * that result from the user-supplied value.
560 timevalsub(&tv1, &tv0);
561 timevalsub(&utv, &tv1);
568 printf(LMSG("outgoing timeout (%ld/%ld)"),
569 utv.tv_sec, utv.tv_usec);
571 if ((error = copyout(&utv, (caddr_t)args->timeout,
579 printf(LMSG("select_out -> %d"), error);
585 linux_mremap(struct linux_mremap_args *args)
587 struct munmap_args bsd_args;
592 printf(ARGS(mremap, "%p, %08lx, %08lx, %08lx"),
594 (unsigned long)args->old_len,
595 (unsigned long)args->new_len,
596 (unsigned long)args->flags);
598 args->new_len = round_page(args->new_len);
599 args->old_len = round_page(args->old_len);
601 if (args->new_len > args->old_len) {
602 args->sysmsg_result = 0;
606 if (args->new_len < args->old_len) {
607 bsd_args.sysmsg_result = 0;
608 bsd_args.addr = (caddr_t)(args->addr + args->new_len);
609 bsd_args.len = args->old_len - args->new_len;
610 error = munmap(&bsd_args);
613 args->sysmsg_resultp = error ? NULL : (void *)args->addr;
617 #define LINUX_MS_ASYNC 0x0001
618 #define LINUX_MS_INVALIDATE 0x0002
619 #define LINUX_MS_SYNC 0x0004
622 linux_msync(struct linux_msync_args *args)
624 struct msync_args bsd_args;
627 bsd_args.addr = (caddr_t)args->addr;
628 bsd_args.len = args->len;
629 bsd_args.flags = args->fl & ~LINUX_MS_SYNC;
630 bsd_args.sysmsg_result = 0;
632 error = msync(&bsd_args);
633 args->sysmsg_result = bsd_args.sysmsg_result;
639 linux_time(struct linux_time_args *args)
647 printf(ARGS(time, "*"));
652 if (args->tm && (error = copyout(&tm, (caddr_t)args->tm, sizeof(tm))))
654 args->sysmsg_lresult = tm;
657 #endif /*!__alpha__*/
659 struct l_times_argv {
667 #define CLK_TCK 1024 /* Linux uses 1024 on alpha */
669 #define CLK_TCK 100 /* Linux uses 100 */
672 #define CONVTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK))
675 linux_times(struct linux_times_args *args)
677 struct thread *td = curthread;
678 struct proc *p = td->td_proc;
680 struct l_times_argv tms;
687 printf(ARGS(times, "*"));
690 calcru(p, &ru.ru_utime, &ru.ru_stime, NULL);
692 tms.tms_utime = CONVTCK(ru.ru_utime);
693 tms.tms_stime = CONVTCK(ru.ru_stime);
695 tms.tms_cutime = CONVTCK(p->p_stats->p_cru.ru_utime);
696 tms.tms_cstime = CONVTCK(p->p_stats->p_cru.ru_stime);
698 if ((error = copyout(&tms, (caddr_t)args->buf, sizeof(tms))))
702 args->sysmsg_result = (int)CONVTCK(tv);
707 linux_newuname(struct linux_newuname_args *args)
709 struct thread *td = curthread;
710 struct l_new_utsname utsname;
711 char *osrelease, *osname;
714 if (ldebug(newuname))
715 printf(ARGS(newuname, "*"));
718 osname = linux_get_osname(td);
719 osrelease = linux_get_osrelease(td);
721 bzero(&utsname, sizeof(utsname));
722 strncpy(utsname.sysname, osname, LINUX_MAX_UTSNAME-1);
723 strncpy(utsname.nodename, hostname, LINUX_MAX_UTSNAME-1);
724 strncpy(utsname.release, osrelease, LINUX_MAX_UTSNAME-1);
725 strncpy(utsname.version, version, LINUX_MAX_UTSNAME-1);
726 strncpy(utsname.machine, machine, LINUX_MAX_UTSNAME-1);
727 strncpy(utsname.domainname, domainname, LINUX_MAX_UTSNAME-1);
729 return (copyout(&utsname, (caddr_t)args->buf, sizeof(utsname)));
732 #if defined(__i386__)
739 linux_utime(struct linux_utime_args *args)
741 struct utimes_args /* {
743 struct timeval *tptr;
745 struct timeval tv[2], *tvp;
746 struct l_utimbuf lut;
750 sg = stackgap_init();
751 CHECKALTEXIST(&sg, args->fname);
755 printf(ARGS(utime, "%s, *"), args->fname);
759 if ((error = copyin((caddr_t)args->times, &lut, sizeof lut)))
761 tv[0].tv_sec = lut.l_actime;
763 tv[1].tv_sec = lut.l_modtime;
765 /* so that utimes can copyin */
766 tvp = (struct timeval *)stackgap_alloc(&sg, sizeof(tv));
768 return (ENAMETOOLONG);
769 if ((error = copyout(tv, tvp, sizeof(tv))))
771 bsdutimes.tptr = tvp;
773 bsdutimes.tptr = NULL;
775 bsdutimes.path = args->fname;
776 bsdutimes.sysmsg_result = 0;
777 error = utimes(&bsdutimes);
778 args->sysmsg_result = bsdutimes.sysmsg_result;
781 #endif /* __i386__ */
783 #define __WCLONE 0x80000000
787 linux_waitpid(struct linux_waitpid_args *args)
789 struct wait_args bsd_args;
794 printf(ARGS(waitpid, "%d, %p, %d"),
795 args->pid, (void *)args->status, args->options);
798 bsd_args.sysmsg_result = 0;
799 bsd_args.pid = args->pid;
800 bsd_args.status = args->status;
801 bsd_args.options = (args->options & (WNOHANG | WUNTRACED));
802 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */
803 if (args->options & __WCLONE)
804 bsd_args.options |= WLINUXCLONE;
805 bsd_args.rusage = NULL;
807 if ((error = wait4(&bsd_args)) != 0)
809 args->sysmsg_result = bsd_args.sysmsg_result;
812 if ((error = copyin((caddr_t)args->status, &tmpstat,
816 if (WIFSIGNALED(tmpstat))
817 tmpstat = (tmpstat & 0xffffff80) |
818 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat));
819 else if (WIFSTOPPED(tmpstat))
820 tmpstat = (tmpstat & 0xffff00ff) |
821 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8);
822 return copyout(&tmpstat, (caddr_t)args->status, sizeof(int));
827 #endif /*!__alpha__*/
830 linux_wait4(struct linux_wait4_args *args)
832 struct thread *td = curthread;
833 struct proc *p = td->td_proc;
834 struct wait_args bsd_args;
841 printf(ARGS(wait4, "%d, %p, %d, %p"),
842 args->pid, (void *)args->status, args->options,
843 (void *)args->rusage);
846 bsd_args.sysmsg_result = 0;
847 bsd_args.pid = args->pid;
848 bsd_args.status = args->status;
849 bsd_args.options = (args->options & (WNOHANG | WUNTRACED));
850 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */
851 if (args->options & __WCLONE)
852 bsd_args.options |= WLINUXCLONE;
853 bsd_args.rusage = (struct rusage *)args->rusage;
855 if ((error = wait4(&bsd_args)) != 0)
857 args->sysmsg_result = bsd_args.sysmsg_result;
859 SIGDELSET(p->p_siglist, SIGCHLD);
862 if ((error = copyin((caddr_t)args->status, &tmpstat,
866 if (WIFSIGNALED(tmpstat))
867 tmpstat = (tmpstat & 0xffffff80) |
868 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat));
869 else if (WIFSTOPPED(tmpstat))
870 tmpstat = (tmpstat & 0xffff00ff) |
871 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8);
872 return copyout(&tmpstat, (caddr_t)args->status, sizeof(int));
879 linux_mknod(struct linux_mknod_args *args)
883 struct mknod_args bsd_mknod;
884 struct mkfifo_args bsd_mkfifo;
886 sg = stackgap_init();
888 CHECKALTCREAT(&sg, args->path);
892 printf(ARGS(mknod, "%s, %d, %d"),
893 args->path, args->mode, args->dev);
896 if (args->mode & S_IFIFO) {
897 bsd_mkfifo.path = args->path;
898 bsd_mkfifo.mode = args->mode;
899 bsd_mkfifo.sysmsg_result = 0;
900 error = mkfifo(&bsd_mkfifo);
901 args->sysmsg_result = bsd_mkfifo.sysmsg_result;
903 bsd_mknod.path = args->path;
904 bsd_mknod.mode = args->mode;
905 bsd_mknod.dev = args->dev;
906 bsd_mknod.sysmsg_result = 0;
907 error = mknod(&bsd_mknod);
908 args->sysmsg_result = bsd_mknod.sysmsg_result;
914 * UGH! This is just about the dumbest idea I've ever heard!!
917 linux_personality(struct linux_personality_args *args)
920 if (ldebug(personality))
921 printf(ARGS(personality, "%d"), args->per);
928 /* Yes Jim, it's still a Linux... */
929 args->sysmsg_result = 0;
934 * Wrappers for get/setitimer for debugging..
937 linux_setitimer(struct linux_setitimer_args *args)
939 struct setitimer_args bsa;
940 struct itimerval foo;
944 if (ldebug(setitimer))
945 printf(ARGS(setitimer, "%p, %p"),
946 (void *)args->itv, (void *)args->oitv);
948 bsa.which = args->which;
949 bsa.itv = (struct itimerval *)args->itv;
950 bsa.oitv = (struct itimerval *)args->oitv;
951 bsa.sysmsg_result = 0;
953 if ((error = copyin((caddr_t)args->itv, &foo, sizeof(foo))))
956 if (ldebug(setitimer)) {
957 printf("setitimer: value: sec: %ld, usec: %ld\n",
958 foo.it_value.tv_sec, foo.it_value.tv_usec);
959 printf("setitimer: interval: sec: %ld, usec: %ld\n",
960 foo.it_interval.tv_sec, foo.it_interval.tv_usec);
964 error = setitimer(&bsa);
965 args->sysmsg_result = bsa.sysmsg_result;
970 linux_getitimer(struct linux_getitimer_args *args)
972 struct getitimer_args bsa;
975 if (ldebug(getitimer))
976 printf(ARGS(getitimer, "%p"), (void *)args->itv);
978 bsa.which = args->which;
979 bsa.itv = (struct itimerval *)args->itv;
980 bsa.sysmsg_result = 0;
981 error = getitimer(&bsa);
982 args->sysmsg_result = bsa.sysmsg_result;
988 linux_nice(struct linux_nice_args *args)
990 struct setpriority_args bsd_args;
993 bsd_args.which = PRIO_PROCESS;
994 bsd_args.who = 0; /* current process */
995 bsd_args.prio = args->inc;
996 bsd_args.sysmsg_result = 0;
997 error = setpriority(&bsd_args);
998 args->sysmsg_result = bsd_args.sysmsg_result;
1001 #endif /*!__alpha__*/
1004 linux_setgroups(struct linux_setgroups_args *args)
1006 struct thread *td = curthread;
1007 struct proc *p = td->td_proc;
1008 struct ucred *newcred, *oldcred;
1009 l_gid_t linux_gidset[NGROUPS];
1015 ngrp = args->gidsetsize;
1016 oldcred = p->p_ucred;
1019 * cr_groups[0] holds egid. Setting the whole set from
1020 * the supplied set will cause egid to be changed too.
1021 * Keep cr_groups[0] unchanged to prevent that.
1024 if ((error = suser_cred(oldcred, PRISON_ROOT)) != 0)
1027 if (ngrp >= NGROUPS)
1030 newcred = crdup(oldcred);
1032 error = copyin((caddr_t)args->grouplist, linux_gidset,
1033 ngrp * sizeof(l_gid_t));
1037 newcred->cr_ngroups = ngrp + 1;
1039 bsd_gidset = newcred->cr_groups;
1042 bsd_gidset[ngrp + 1] = linux_gidset[ngrp];
1046 newcred->cr_ngroups = 1;
1050 p->p_ucred = newcred;
1056 linux_getgroups(struct linux_getgroups_args *args)
1058 struct thread *td = curthread;
1059 struct proc *p = td->td_proc;
1061 l_gid_t linux_gidset[NGROUPS];
1063 int bsd_gidsetsz, ngrp, error;
1068 bsd_gidset = cred->cr_groups;
1069 bsd_gidsetsz = cred->cr_ngroups - 1;
1072 * cr_groups[0] holds egid. Returning the whole set
1073 * here will cause a duplicate. Exclude cr_groups[0]
1077 if ((ngrp = args->gidsetsize) == 0) {
1078 args->sysmsg_result = bsd_gidsetsz;
1082 if (ngrp < bsd_gidsetsz)
1086 while (ngrp < bsd_gidsetsz) {
1087 linux_gidset[ngrp] = bsd_gidset[ngrp + 1];
1091 if ((error = copyout(linux_gidset, (caddr_t)args->grouplist,
1092 ngrp * sizeof(l_gid_t))))
1095 args->sysmsg_result = ngrp;
1101 linux_setrlimit(struct linux_setrlimit_args *args)
1103 struct __setrlimit_args bsd;
1104 struct l_rlimit rlim;
1106 caddr_t sg = stackgap_init();
1109 if (ldebug(setrlimit))
1110 printf(ARGS(setrlimit, "%d, %p"),
1111 args->resource, (void *)args->rlim);
1114 if (args->resource >= LINUX_RLIM_NLIMITS)
1117 bsd.which = linux_to_bsd_resource[args->resource];
1118 if (bsd.which == -1)
1121 error = copyin((caddr_t)args->rlim, &rlim, sizeof(rlim));
1125 bsd.rlp = stackgap_alloc(&sg, sizeof(struct rlimit));
1126 bsd.rlp->rlim_cur = (rlim_t)rlim.rlim_cur;
1127 bsd.rlp->rlim_max = (rlim_t)rlim.rlim_max;
1128 bsd.sysmsg_result = 0;
1129 error = setrlimit(&bsd);
1130 args->sysmsg_result = bsd.sysmsg_result;
1135 linux_old_getrlimit(struct linux_old_getrlimit_args *args)
1137 struct __getrlimit_args bsd;
1138 struct l_rlimit rlim;
1140 caddr_t sg = stackgap_init();
1143 if (ldebug(old_getrlimit))
1144 printf(ARGS(old_getrlimit, "%d, %p"),
1145 args->resource, (void *)args->rlim);
1148 if (args->resource >= LINUX_RLIM_NLIMITS)
1151 bsd.which = linux_to_bsd_resource[args->resource];
1152 if (bsd.which == -1)
1155 bsd.rlp = stackgap_alloc(&sg, sizeof(struct rlimit));
1156 bsd.sysmsg_result = 0;
1157 error = getrlimit(&bsd);
1160 args->sysmsg_result = bsd.sysmsg_result;
1161 rlim.rlim_cur = (unsigned long)bsd.rlp->rlim_cur;
1162 if (rlim.rlim_cur == ULONG_MAX)
1163 rlim.rlim_cur = LONG_MAX;
1164 rlim.rlim_max = (unsigned long)bsd.rlp->rlim_max;
1165 if (rlim.rlim_max == ULONG_MAX)
1166 rlim.rlim_max = LONG_MAX;
1167 return (copyout(&rlim, (caddr_t)args->rlim, sizeof(rlim)));
1171 linux_getrlimit(struct linux_getrlimit_args *args)
1173 struct __getrlimit_args bsd;
1174 struct l_rlimit rlim;
1176 caddr_t sg = stackgap_init();
1179 if (ldebug(getrlimit))
1180 printf(ARGS(getrlimit, "%d, %p"),
1181 args->resource, (void *)args->rlim);
1184 if (args->resource >= LINUX_RLIM_NLIMITS)
1187 bsd.which = linux_to_bsd_resource[args->resource];
1188 if (bsd.which == -1)
1191 bsd.rlp = stackgap_alloc(&sg, sizeof(struct rlimit));
1192 bsd.sysmsg_result = 0;
1193 error = getrlimit(&bsd);
1196 args->sysmsg_result = bsd.sysmsg_result;
1198 rlim.rlim_cur = (l_ulong)bsd.rlp->rlim_cur;
1199 rlim.rlim_max = (l_ulong)bsd.rlp->rlim_max;
1200 return (copyout(&rlim, (caddr_t)args->rlim, sizeof(rlim)));
1202 #endif /*!__alpha__*/
1205 linux_sched_setscheduler(struct linux_sched_setscheduler_args *args)
1207 struct sched_setscheduler_args bsd;
1211 if (ldebug(sched_setscheduler))
1212 printf(ARGS(sched_setscheduler, "%d, %d, %p"),
1213 args->pid, args->policy, (const void *)args->param);
1216 switch (args->policy) {
1217 case LINUX_SCHED_OTHER:
1218 bsd.policy = SCHED_OTHER;
1220 case LINUX_SCHED_FIFO:
1221 bsd.policy = SCHED_FIFO;
1223 case LINUX_SCHED_RR:
1224 bsd.policy = SCHED_RR;
1230 bsd.pid = args->pid;
1231 bsd.param = (struct sched_param *)args->param;
1232 bsd.sysmsg_result = 0;
1234 error = sched_setscheduler(&bsd);
1235 args->sysmsg_result = bsd.sysmsg_result;
1240 linux_sched_getscheduler(struct linux_sched_getscheduler_args *args)
1242 struct sched_getscheduler_args bsd;
1246 if (ldebug(sched_getscheduler))
1247 printf(ARGS(sched_getscheduler, "%d"), args->pid);
1250 bsd.sysmsg_result = 0;
1251 bsd.pid = args->pid;
1252 error = sched_getscheduler(&bsd);
1253 args->sysmsg_result = bsd.sysmsg_result;
1255 switch (args->sysmsg_result) {
1257 args->sysmsg_result = LINUX_SCHED_OTHER;
1260 args->sysmsg_result = LINUX_SCHED_FIFO;
1263 args->sysmsg_result = LINUX_SCHED_RR;
1270 linux_sched_get_priority_max(struct linux_sched_get_priority_max_args *args)
1272 struct sched_get_priority_max_args bsd;
1276 if (ldebug(sched_get_priority_max))
1277 printf(ARGS(sched_get_priority_max, "%d"), args->policy);
1280 switch (args->policy) {
1281 case LINUX_SCHED_OTHER:
1282 bsd.policy = SCHED_OTHER;
1284 case LINUX_SCHED_FIFO:
1285 bsd.policy = SCHED_FIFO;
1287 case LINUX_SCHED_RR:
1288 bsd.policy = SCHED_RR;
1293 bsd.sysmsg_result = 0;
1295 error = sched_get_priority_max(&bsd);
1296 args->sysmsg_result = bsd.sysmsg_result;
1301 linux_sched_get_priority_min(struct linux_sched_get_priority_min_args *args)
1303 struct sched_get_priority_min_args bsd;
1307 if (ldebug(sched_get_priority_min))
1308 printf(ARGS(sched_get_priority_min, "%d"), args->policy);
1311 switch (args->policy) {
1312 case LINUX_SCHED_OTHER:
1313 bsd.policy = SCHED_OTHER;
1315 case LINUX_SCHED_FIFO:
1316 bsd.policy = SCHED_FIFO;
1318 case LINUX_SCHED_RR:
1319 bsd.policy = SCHED_RR;
1324 bsd.sysmsg_result = 0;
1326 error = sched_get_priority_min(&bsd);
1327 args->sysmsg_result = bsd.sysmsg_result;
1331 #define REBOOT_CAD_ON 0x89abcdef
1332 #define REBOOT_CAD_OFF 0
1333 #define REBOOT_HALT 0xcdef0123
1336 linux_reboot(struct linux_reboot_args *args)
1338 struct reboot_args bsd_args;
1343 printf(ARGS(reboot, "0x%x"), args->cmd);
1345 if (args->cmd == REBOOT_CAD_ON || args->cmd == REBOOT_CAD_OFF)
1347 bsd_args.opt = (args->cmd == REBOOT_HALT) ? RB_HALT : 0;
1348 bsd_args.sysmsg_result = 0;
1350 error = reboot(&bsd_args);
1351 args->sysmsg_result = bsd_args.sysmsg_result;
1358 * The FreeBSD native getpid(2), getgid(2) and getuid(2) also modify
1359 * p->p_retval[1] when COMPAT_43 or COMPAT_SUNOS is defined. This
1360 * globbers registers that are assumed to be preserved. The following
1361 * lightweight syscalls fixes this. See also linux_getgid16() and
1362 * linux_getuid16() in linux_uid16.c.
1364 * linux_getpid() - MP SAFE
1365 * linux_getgid() - MP SAFE
1366 * linux_getuid() - MP SAFE
1370 linux_getpid(struct linux_getpid_args *args)
1372 struct thread *td = curthread;
1373 struct proc *p = td->td_proc;
1377 args->sysmsg_result = p->p_pid;
1382 linux_getgid(struct linux_getgid_args *args)
1384 struct thread *td = curthread;
1385 struct proc *p = td->td_proc;
1389 args->sysmsg_result = p->p_ucred->cr_rgid;
1394 linux_getuid(struct linux_getuid_args *args)
1396 struct thread *td = curthread;
1397 struct proc *p = td->td_proc;
1401 args->sysmsg_result = p->p_ucred->cr_ruid;
1405 #endif /*!__alpha__*/
1408 linux_getsid(struct linux_getsid_args *args)
1410 struct getsid_args bsd;
1413 bsd.sysmsg_result = 0;
1414 bsd.pid = args->pid;
1415 error = getsid(&bsd);
1416 args->sysmsg_result = bsd.sysmsg_result;