2 * Copyright (c) 2002 Doug Rabson
3 * Copyright (c) 1994-1995 Søren Schmidt
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer
11 * in this position and unchanged.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include "opt_compat.h"
35 #include <sys/param.h>
36 #include <sys/blist.h>
37 #include <sys/fcntl.h>
39 #include <sys/imgact_aout.h>
42 #include <sys/kernel.h>
43 #include <sys/limits.h>
45 #include <sys/malloc.h>
47 #include <sys/mount.h>
48 #include <sys/mutex.h>
49 #include <sys/namei.h>
52 #include <sys/reboot.h>
53 #include <sys/racct.h>
54 #include <sys/random.h>
55 #include <sys/resourcevar.h>
56 #include <sys/sched.h>
58 #include <sys/signalvar.h>
60 #include <sys/syscallsubr.h>
61 #include <sys/sysctl.h>
62 #include <sys/sysproto.h>
63 #include <sys/systm.h>
65 #include <sys/vmmeter.h>
66 #include <sys/vnode.h>
68 #include <sys/cpuset.h>
71 #include <security/mac/mac_framework.h>
75 #include <vm/vm_kern.h>
76 #include <vm/vm_map.h>
77 #include <vm/vm_extern.h>
78 #include <vm/vm_object.h>
79 #include <vm/swap_pager.h>
82 #include <machine/../linux32/linux.h>
83 #include <machine/../linux32/linux32_proto.h>
85 #include <machine/../linux/linux.h>
86 #include <machine/../linux/linux_proto.h>
89 #include <compat/linux/linux_dtrace.h>
90 #include <compat/linux/linux_file.h>
91 #include <compat/linux/linux_mib.h>
92 #include <compat/linux/linux_signal.h>
93 #include <compat/linux/linux_timer.h>
94 #include <compat/linux/linux_util.h>
95 #include <compat/linux/linux_sysproto.h>
96 #include <compat/linux/linux_emul.h>
97 #include <compat/linux/linux_misc.h>
100 * Special DTrace provider for the linuxulator.
102 * In this file we define the provider for the entire linuxulator. All
103 * modules (= files of the linuxulator) use it.
105 * We define a different name depending on the emulated bitsize, see
106 * ../../<ARCH>/linux{,32}/linux.h, e.g.:
107 * native bitsize = linuxulator
108 * amd64, 32bit emulation = linuxulator32
110 LIN_SDT_PROVIDER_DEFINE(LINUX_DTRACE);
112 int stclohz; /* Statistics clock frequency */
114 static unsigned int linux_to_bsd_resource[LINUX_RLIM_NLIMITS] = {
115 RLIMIT_CPU, RLIMIT_FSIZE, RLIMIT_DATA, RLIMIT_STACK,
116 RLIMIT_CORE, RLIMIT_RSS, RLIMIT_NPROC, RLIMIT_NOFILE,
117 RLIMIT_MEMLOCK, RLIMIT_AS
121 l_long uptime; /* Seconds since boot */
122 l_ulong loads[3]; /* 1, 5, and 15 minute load averages */
123 #define LINUX_SYSINFO_LOADS_SCALE 65536
124 l_ulong totalram; /* Total usable main memory size */
125 l_ulong freeram; /* Available memory size */
126 l_ulong sharedram; /* Amount of shared memory */
127 l_ulong bufferram; /* Memory used by buffers */
128 l_ulong totalswap; /* Total swap space size */
129 l_ulong freeswap; /* swap space still available */
130 l_ushort procs; /* Number of current processes */
135 char _f[20-2*sizeof(l_long)-sizeof(l_int)]; /* padding */
138 struct l_pselect6arg {
143 static int linux_utimensat_nsec_valid(l_long);
147 linux_sysinfo(struct thread *td, struct linux_sysinfo_args *args)
149 struct l_sysinfo sysinfo;
154 bzero(&sysinfo, sizeof(sysinfo));
158 sysinfo.uptime = ts.tv_sec;
160 /* Use the information from the mib to get our load averages */
161 for (i = 0; i < 3; i++)
162 sysinfo.loads[i] = averunnable.ldavg[i] *
163 LINUX_SYSINFO_LOADS_SCALE / averunnable.fscale;
165 sysinfo.totalram = physmem * PAGE_SIZE;
166 sysinfo.freeram = sysinfo.totalram - vm_cnt.v_wire_count * PAGE_SIZE;
168 sysinfo.sharedram = 0;
169 mtx_lock(&vm_object_list_mtx);
170 TAILQ_FOREACH(object, &vm_object_list, object_list)
171 if (object->shadow_count > 1)
172 sysinfo.sharedram += object->resident_page_count;
173 mtx_unlock(&vm_object_list_mtx);
175 sysinfo.sharedram *= PAGE_SIZE;
176 sysinfo.bufferram = 0;
178 swap_pager_status(&i, &j);
179 sysinfo.totalswap = i * PAGE_SIZE;
180 sysinfo.freeswap = (i - j) * PAGE_SIZE;
182 sysinfo.procs = nprocs;
184 /* The following are only present in newer Linux kernels. */
185 sysinfo.totalbig = 0;
187 sysinfo.mem_unit = 1;
189 return (copyout(&sysinfo, args->info, sizeof(sysinfo)));
193 linux_alarm(struct thread *td, struct linux_alarm_args *args)
195 struct itimerval it, old_it;
201 printf(ARGS(alarm, "%u"), args->secs);
205 * Linux alarm() is always successful. Limit secs to INT32_MAX / 2
206 * to match kern_setitimer()'s limit to avoid error from it.
208 * XXX. Linux limit secs to INT_MAX on 32 and does not limit on 64-bit
211 if (secs > INT32_MAX / 2)
212 secs = INT32_MAX / 2;
214 it.it_value.tv_sec = secs;
215 it.it_value.tv_usec = 0;
216 timevalclear(&it.it_interval);
217 error = kern_setitimer(td, ITIMER_REAL, &it, &old_it);
218 KASSERT(error == 0, ("kern_setitimer returns %d", error));
220 if ((old_it.it_value.tv_sec == 0 && old_it.it_value.tv_usec > 0) ||
221 old_it.it_value.tv_usec >= 500000)
222 old_it.it_value.tv_sec++;
223 td->td_retval[0] = old_it.it_value.tv_sec;
228 linux_brk(struct thread *td, struct linux_brk_args *args)
230 struct vmspace *vm = td->td_proc->p_vmspace;
231 vm_offset_t new, old;
232 struct obreak_args /* {
238 printf(ARGS(brk, "%p"), (void *)(uintptr_t)args->dsend);
240 old = (vm_offset_t)vm->vm_daddr + ctob(vm->vm_dsize);
241 new = (vm_offset_t)args->dsend;
242 tmp.nsize = (char *)new;
243 if (((caddr_t)new > vm->vm_daddr) && !sys_obreak(td, &tmp))
244 td->td_retval[0] = (long)new;
246 td->td_retval[0] = (long)old;
251 #if defined(__i386__)
252 /* XXX: what about amd64/linux32? */
255 linux_uselib(struct thread *td, struct linux_uselib_args *args)
262 unsigned long file_offset;
263 unsigned long bss_size;
266 int error, locked, writecount;
268 LCONVPATHEXIST(td, args->library, &library);
272 printf(ARGS(uselib, "%s"), library);
279 NDINIT(&ni, LOOKUP, ISOPEN | FOLLOW | LOCKLEAF | AUDITVNODE1,
280 UIO_SYSSPACE, library, td);
287 NDFREE(&ni, NDF_ONLY_PNBUF);
290 * From here on down, we have a locked vnode that must be unlocked.
291 * XXX: The code below largely duplicates exec_check_permissions().
296 error = VOP_GET_WRITECOUNT(vp, &writecount);
299 if (writecount != 0) {
305 error = VOP_GETATTR(vp, &attr, td->td_ucred);
309 if ((vp->v_mount->mnt_flag & MNT_NOEXEC) ||
310 ((attr.va_mode & 0111) == 0) || (attr.va_type != VREG)) {
311 /* EACCESS is what exec(2) returns. */
317 if (attr.va_size == 0) {
322 /* Can we access it? */
323 error = VOP_ACCESS(vp, VEXEC, td->td_ucred, td);
328 * XXX: This should use vn_open() so that it is properly authorized,
329 * and to reduce code redundancy all over the place here.
330 * XXX: Not really, it duplicates far more of exec_check_permissions()
334 error = mac_vnode_check_open(td->td_ucred, vp, VREAD);
338 error = VOP_OPEN(vp, FREAD, td->td_ucred, td, NULL);
342 /* Pull in executable header into exec_map */
343 error = vm_mmap(exec_map, (vm_offset_t *)&a_out, PAGE_SIZE,
344 VM_PROT_READ, VM_PROT_READ, 0, OBJT_VNODE, vp, 0);
348 /* Is it a Linux binary ? */
349 if (((a_out->a_magic >> 16) & 0xff) != 0x64) {
355 * While we are here, we should REALLY do some more checks
358 /* Set file/virtual offset based on a.out variant. */
359 switch ((int)(a_out->a_magic & 0xffff)) {
360 case 0413: /* ZMAGIC */
363 case 0314: /* QMAGIC */
371 bss_size = round_page(a_out->a_bss);
373 /* Check various fields in header for validity/bounds. */
374 if (a_out->a_text & PAGE_MASK || a_out->a_data & PAGE_MASK) {
379 /* text + data can't exceed file size */
380 if (a_out->a_data + a_out->a_text > attr.va_size) {
386 * text/data/bss must not exceed limits
387 * XXX - this is not complete. it should check current usage PLUS
388 * the resources needed by this library.
390 PROC_LOCK(td->td_proc);
391 if (a_out->a_text > maxtsiz ||
392 a_out->a_data + bss_size > lim_cur_proc(td->td_proc, RLIMIT_DATA) ||
393 racct_set(td->td_proc, RACCT_DATA, a_out->a_data +
395 PROC_UNLOCK(td->td_proc);
399 PROC_UNLOCK(td->td_proc);
402 * Prevent more writers.
403 * XXX: Note that if any of the VM operations fail below we don't
409 * Lock no longer needed
415 * Check if file_offset page aligned. Currently we cannot handle
416 * misalinged file offsets, and so we read in the entire image
419 if (file_offset & PAGE_MASK) {
421 printf("uselib: Non page aligned binary %lu\n", file_offset);
423 /* Map text+data read/write/execute */
425 /* a_entry is the load address and is page aligned */
426 vmaddr = trunc_page(a_out->a_entry);
428 /* get anon user mapping, read+write+execute */
429 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0,
430 &vmaddr, a_out->a_text + a_out->a_data, 0, VMFS_NO_SPACE,
431 VM_PROT_ALL, VM_PROT_ALL, 0);
435 error = vn_rdwr(UIO_READ, vp, (void *)vmaddr, file_offset,
436 a_out->a_text + a_out->a_data, UIO_USERSPACE, 0,
437 td->td_ucred, NOCRED, &aresid, td);
446 printf("uselib: Page aligned binary %lu\n", file_offset);
449 * for QMAGIC, a_entry is 20 bytes beyond the load address
450 * to skip the executable header
452 vmaddr = trunc_page(a_out->a_entry);
455 * Map it all into the process's space as a single
456 * copy-on-write "data" segment.
458 error = vm_mmap(&td->td_proc->p_vmspace->vm_map, &vmaddr,
459 a_out->a_text + a_out->a_data, VM_PROT_ALL, VM_PROT_ALL,
460 MAP_PRIVATE | MAP_FIXED, OBJT_VNODE, vp, file_offset);
465 printf("mem=%08lx = %08lx %08lx\n", (long)vmaddr, ((long *)vmaddr)[0],
466 ((long *)vmaddr)[1]);
469 /* Calculate BSS start address */
470 vmaddr = trunc_page(a_out->a_entry) + a_out->a_text +
473 /* allocate some 'anon' space */
474 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0,
475 &vmaddr, bss_size, 0, VMFS_NO_SPACE, VM_PROT_ALL,
482 /* Unlock vnode if needed */
486 /* Release the temporary mapping. */
488 kmap_free_wakeup(exec_map, (vm_offset_t)a_out, PAGE_SIZE);
493 #endif /* __i386__ */
496 linux_select(struct thread *td, struct linux_select_args *args)
499 struct timeval tv0, tv1, utv, *tvp;
504 printf(ARGS(select, "%d, %p, %p, %p, %p"), args->nfds,
505 (void *)args->readfds, (void *)args->writefds,
506 (void *)args->exceptfds, (void *)args->timeout);
510 * Store current time for computation of the amount of
514 if ((error = copyin(args->timeout, <v, sizeof(ltv))))
516 utv.tv_sec = ltv.tv_sec;
517 utv.tv_usec = ltv.tv_usec;
520 printf(LMSG("incoming timeout (%jd/%ld)"),
521 (intmax_t)utv.tv_sec, utv.tv_usec);
524 if (itimerfix(&utv)) {
526 * The timeval was invalid. Convert it to something
527 * valid that will act as it does under Linux.
529 utv.tv_sec += utv.tv_usec / 1000000;
530 utv.tv_usec %= 1000000;
531 if (utv.tv_usec < 0) {
533 utv.tv_usec += 1000000;
543 error = kern_select(td, args->nfds, args->readfds, args->writefds,
544 args->exceptfds, tvp, LINUX_NFDBITS);
548 printf(LMSG("real select returns %d"), error);
554 if (td->td_retval[0]) {
556 * Compute how much time was left of the timeout,
557 * by subtracting the current time and the time
558 * before we started the call, and subtracting
559 * that result from the user-supplied value.
562 timevalsub(&tv1, &tv0);
563 timevalsub(&utv, &tv1);
570 printf(LMSG("outgoing timeout (%jd/%ld)"),
571 (intmax_t)utv.tv_sec, utv.tv_usec);
573 ltv.tv_sec = utv.tv_sec;
574 ltv.tv_usec = utv.tv_usec;
575 if ((error = copyout(<v, args->timeout, sizeof(ltv))))
582 printf(LMSG("select_out -> %d"), error);
588 linux_mremap(struct thread *td, struct linux_mremap_args *args)
596 printf(ARGS(mremap, "%p, %08lx, %08lx, %08lx"),
597 (void *)(uintptr_t)args->addr,
598 (unsigned long)args->old_len,
599 (unsigned long)args->new_len,
600 (unsigned long)args->flags);
603 if (args->flags & ~(LINUX_MREMAP_FIXED | LINUX_MREMAP_MAYMOVE)) {
604 td->td_retval[0] = 0;
609 * Check for the page alignment.
610 * Linux defines PAGE_MASK to be FreeBSD ~PAGE_MASK.
612 if (args->addr & PAGE_MASK) {
613 td->td_retval[0] = 0;
617 args->new_len = round_page(args->new_len);
618 args->old_len = round_page(args->old_len);
620 if (args->new_len > args->old_len) {
621 td->td_retval[0] = 0;
625 if (args->new_len < args->old_len) {
626 addr = args->addr + args->new_len;
627 len = args->old_len - args->new_len;
628 error = kern_munmap(td, addr, len);
631 td->td_retval[0] = error ? 0 : (uintptr_t)args->addr;
635 #define LINUX_MS_ASYNC 0x0001
636 #define LINUX_MS_INVALIDATE 0x0002
637 #define LINUX_MS_SYNC 0x0004
640 linux_msync(struct thread *td, struct linux_msync_args *args)
643 return (kern_msync(td, args->addr, args->len,
644 args->fl & ~LINUX_MS_SYNC));
648 linux_time(struct thread *td, struct linux_time_args *args)
656 printf(ARGS(time, "*"));
661 if (args->tm && (error = copyout(&tm, args->tm, sizeof(tm))))
663 td->td_retval[0] = tm;
667 struct l_times_argv {
670 l_clock_t tms_cutime;
671 l_clock_t tms_cstime;
676 * Glibc versions prior to 2.2.1 always use hard-coded CLK_TCK value.
677 * Since 2.2.1 Glibc uses value exported from kernel via AT_CLKTCK
678 * auxiliary vector entry.
682 #define CONVOTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK))
683 #define CONVNTCK(r) (r.tv_sec * stclohz + r.tv_usec / (1000000 / stclohz))
685 #define CONVTCK(r) (linux_kernver(td) >= LINUX_KERNVER_2004000 ? \
686 CONVNTCK(r) : CONVOTCK(r))
689 linux_times(struct thread *td, struct linux_times_args *args)
691 struct timeval tv, utime, stime, cutime, cstime;
692 struct l_times_argv tms;
698 printf(ARGS(times, "*"));
701 if (args->buf != NULL) {
705 calcru(p, &utime, &stime);
707 calccru(p, &cutime, &cstime);
710 tms.tms_utime = CONVTCK(utime);
711 tms.tms_stime = CONVTCK(stime);
713 tms.tms_cutime = CONVTCK(cutime);
714 tms.tms_cstime = CONVTCK(cstime);
716 if ((error = copyout(&tms, args->buf, sizeof(tms))))
721 td->td_retval[0] = (int)CONVTCK(tv);
726 linux_newuname(struct thread *td, struct linux_newuname_args *args)
728 struct l_new_utsname utsname;
729 char osname[LINUX_MAX_UTSNAME];
730 char osrelease[LINUX_MAX_UTSNAME];
734 if (ldebug(newuname))
735 printf(ARGS(newuname, "*"));
738 linux_get_osname(td, osname);
739 linux_get_osrelease(td, osrelease);
741 bzero(&utsname, sizeof(utsname));
742 strlcpy(utsname.sysname, osname, LINUX_MAX_UTSNAME);
743 getcredhostname(td->td_ucred, utsname.nodename, LINUX_MAX_UTSNAME);
744 getcreddomainname(td->td_ucred, utsname.domainname, LINUX_MAX_UTSNAME);
745 strlcpy(utsname.release, osrelease, LINUX_MAX_UTSNAME);
746 strlcpy(utsname.version, version, LINUX_MAX_UTSNAME);
747 for (p = utsname.version; *p != '\0'; ++p)
752 strlcpy(utsname.machine, linux_kplatform, LINUX_MAX_UTSNAME);
754 return (copyout(&utsname, args->buf, sizeof(utsname)));
763 linux_utime(struct thread *td, struct linux_utime_args *args)
765 struct timeval tv[2], *tvp;
766 struct l_utimbuf lut;
770 LCONVPATHEXIST(td, args->fname, &fname);
774 printf(ARGS(utime, "%s, *"), fname);
778 if ((error = copyin(args->times, &lut, sizeof lut))) {
782 tv[0].tv_sec = lut.l_actime;
784 tv[1].tv_sec = lut.l_modtime;
790 error = kern_utimesat(td, AT_FDCWD, fname, UIO_SYSSPACE, tvp,
797 linux_utimes(struct thread *td, struct linux_utimes_args *args)
800 struct timeval tv[2], *tvp = NULL;
804 LCONVPATHEXIST(td, args->fname, &fname);
808 printf(ARGS(utimes, "%s, *"), fname);
811 if (args->tptr != NULL) {
812 if ((error = copyin(args->tptr, ltv, sizeof ltv))) {
816 tv[0].tv_sec = ltv[0].tv_sec;
817 tv[0].tv_usec = ltv[0].tv_usec;
818 tv[1].tv_sec = ltv[1].tv_sec;
819 tv[1].tv_usec = ltv[1].tv_usec;
823 error = kern_utimesat(td, AT_FDCWD, fname, UIO_SYSSPACE,
830 linux_utimensat_nsec_valid(l_long nsec)
833 if (nsec == LINUX_UTIME_OMIT || nsec == LINUX_UTIME_NOW)
835 if (nsec >= 0 && nsec <= 999999999)
841 linux_utimensat(struct thread *td, struct linux_utimensat_args *args)
843 struct l_timespec l_times[2];
844 struct timespec times[2], *timesp = NULL;
846 int error, dfd, flags = 0;
848 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
851 if (ldebug(utimensat))
852 printf(ARGS(utimensat, "%d, *"), dfd);
855 if (args->flags & ~LINUX_AT_SYMLINK_NOFOLLOW)
858 if (args->times != NULL) {
859 error = copyin(args->times, l_times, sizeof(l_times));
863 if (linux_utimensat_nsec_valid(l_times[0].tv_nsec) != 0 ||
864 linux_utimensat_nsec_valid(l_times[1].tv_nsec) != 0)
867 times[0].tv_sec = l_times[0].tv_sec;
868 switch (l_times[0].tv_nsec)
870 case LINUX_UTIME_OMIT:
871 times[0].tv_nsec = UTIME_OMIT;
873 case LINUX_UTIME_NOW:
874 times[0].tv_nsec = UTIME_NOW;
877 times[0].tv_nsec = l_times[0].tv_nsec;
880 times[1].tv_sec = l_times[1].tv_sec;
881 switch (l_times[1].tv_nsec)
883 case LINUX_UTIME_OMIT:
884 times[1].tv_nsec = UTIME_OMIT;
886 case LINUX_UTIME_NOW:
887 times[1].tv_nsec = UTIME_NOW;
890 times[1].tv_nsec = l_times[1].tv_nsec;
895 /* This breaks POSIX, but is what the Linux kernel does
896 * _on purpose_ (documented in the man page for utimensat(2)),
897 * so we must follow that behaviour. */
898 if (times[0].tv_nsec == UTIME_OMIT &&
899 times[1].tv_nsec == UTIME_OMIT)
903 if (args->pathname != NULL)
904 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd);
905 else if (args->flags != 0)
908 if (args->flags & LINUX_AT_SYMLINK_NOFOLLOW)
909 flags |= AT_SYMLINK_NOFOLLOW;
912 error = kern_futimens(td, dfd, timesp, UIO_SYSSPACE);
914 error = kern_utimensat(td, dfd, path, UIO_SYSSPACE, timesp,
915 UIO_SYSSPACE, flags);
923 linux_futimesat(struct thread *td, struct linux_futimesat_args *args)
926 struct timeval tv[2], *tvp = NULL;
930 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
931 LCONVPATHEXIST_AT(td, args->filename, &fname, dfd);
934 if (ldebug(futimesat))
935 printf(ARGS(futimesat, "%s, *"), fname);
938 if (args->utimes != NULL) {
939 if ((error = copyin(args->utimes, ltv, sizeof ltv))) {
943 tv[0].tv_sec = ltv[0].tv_sec;
944 tv[0].tv_usec = ltv[0].tv_usec;
945 tv[1].tv_sec = ltv[1].tv_sec;
946 tv[1].tv_usec = ltv[1].tv_usec;
950 error = kern_utimesat(td, dfd, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
956 linux_common_wait(struct thread *td, int pid, int *status,
957 int options, struct rusage *ru)
961 error = kern_wait(td, pid, &tmpstat, options, ru);
967 if (WIFSIGNALED(tmpstat))
968 tmpstat = (tmpstat & 0xffffff80) |
969 bsd_to_linux_signal(WTERMSIG(tmpstat));
970 else if (WIFSTOPPED(tmpstat))
971 tmpstat = (tmpstat & 0xffff00ff) |
972 (bsd_to_linux_signal(WSTOPSIG(tmpstat)) << 8);
973 else if (WIFCONTINUED(tmpstat))
975 error = copyout(&tmpstat, status, sizeof(int));
981 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
983 linux_waitpid(struct thread *td, struct linux_waitpid_args *args)
985 struct linux_wait4_args wait4_args;
989 printf(ARGS(waitpid, "%d, %p, %d"),
990 args->pid, (void *)args->status, args->options);
993 wait4_args.pid = args->pid;
994 wait4_args.status = args->status;
995 wait4_args.options = args->options;
996 wait4_args.rusage = NULL;
998 return (linux_wait4(td, &wait4_args));
1000 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1003 linux_wait4(struct thread *td, struct linux_wait4_args *args)
1006 struct rusage ru, *rup;
1010 printf(ARGS(wait4, "%d, %p, %d, %p"),
1011 args->pid, (void *)args->status, args->options,
1012 (void *)args->rusage);
1014 if (args->options & ~(LINUX_WUNTRACED | LINUX_WNOHANG |
1015 LINUX_WCONTINUED | __WCLONE | __WNOTHREAD | __WALL))
1019 linux_to_bsd_waitopts(args->options, &options);
1021 if (args->rusage != NULL)
1025 error = linux_common_wait(td, args->pid, args->status, options, rup);
1028 if (args->rusage != NULL)
1029 error = linux_copyout_rusage(&ru, args->rusage);
1034 linux_waitid(struct thread *td, struct linux_waitid_args *args)
1036 int status, options, sig;
1037 struct __wrusage wru;
1045 linux_to_bsd_waitopts(args->options, &options);
1047 if (options & ~(WNOHANG | WNOWAIT | WEXITED | WUNTRACED | WCONTINUED))
1049 if (!(options & (WEXITED | WUNTRACED | WCONTINUED)))
1052 switch (args->idtype) {
1070 error = kern_wait6(td, idtype, args->id, &status, options,
1074 if (args->rusage != NULL) {
1075 error = linux_copyout_rusage(&wru.wru_children,
1080 if (args->info != NULL) {
1082 if (td->td_retval[0] == 0)
1083 bzero(&lsi, sizeof(lsi));
1085 sig = bsd_to_linux_signal(siginfo.si_signo);
1086 siginfo_to_lsiginfo(&siginfo, &lsi, sig);
1088 error = copyout(&lsi, args->info, sizeof(lsi));
1090 td->td_retval[0] = 0;
1096 linux_mknod(struct thread *td, struct linux_mknod_args *args)
1101 LCONVPATHCREAT(td, args->path, &path);
1105 printf(ARGS(mknod, "%s, %d, %ju"), path, args->mode,
1106 (uintmax_t)args->dev);
1109 switch (args->mode & S_IFMT) {
1112 error = kern_mkfifoat(td, AT_FDCWD, path, UIO_SYSSPACE,
1118 error = kern_mknodat(td, AT_FDCWD, path, UIO_SYSSPACE,
1119 args->mode, args->dev);
1127 args->mode |= S_IFREG;
1130 error = kern_openat(td, AT_FDCWD, path, UIO_SYSSPACE,
1131 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
1133 kern_close(td, td->td_retval[0]);
1145 linux_mknodat(struct thread *td, struct linux_mknodat_args *args)
1150 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
1151 LCONVPATHCREAT_AT(td, args->filename, &path, dfd);
1154 if (ldebug(mknodat))
1155 printf(ARGS(mknodat, "%s, %d, %d"), path, args->mode, args->dev);
1158 switch (args->mode & S_IFMT) {
1161 error = kern_mkfifoat(td, dfd, path, UIO_SYSSPACE, args->mode);
1166 error = kern_mknodat(td, dfd, path, UIO_SYSSPACE, args->mode,
1175 args->mode |= S_IFREG;
1178 error = kern_openat(td, dfd, path, UIO_SYSSPACE,
1179 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
1181 kern_close(td, td->td_retval[0]);
1193 * UGH! This is just about the dumbest idea I've ever heard!!
1196 linux_personality(struct thread *td, struct linux_personality_args *args)
1198 struct linux_pemuldata *pem;
1199 struct proc *p = td->td_proc;
1203 if (ldebug(personality))
1204 printf(ARGS(personality, "%u"), args->per);
1210 if (args->per != 0xffffffff)
1211 pem->persona = args->per;
1214 td->td_retval[0] = old;
1218 struct l_itimerval {
1219 l_timeval it_interval;
1223 #define B2L_ITIMERVAL(bip, lip) \
1224 (bip)->it_interval.tv_sec = (lip)->it_interval.tv_sec; \
1225 (bip)->it_interval.tv_usec = (lip)->it_interval.tv_usec; \
1226 (bip)->it_value.tv_sec = (lip)->it_value.tv_sec; \
1227 (bip)->it_value.tv_usec = (lip)->it_value.tv_usec;
1230 linux_setitimer(struct thread *td, struct linux_setitimer_args *uap)
1233 struct l_itimerval ls;
1234 struct itimerval aitv, oitv;
1237 if (ldebug(setitimer))
1238 printf(ARGS(setitimer, "%p, %p"),
1239 (void *)uap->itv, (void *)uap->oitv);
1242 if (uap->itv == NULL) {
1243 uap->itv = uap->oitv;
1244 return (linux_getitimer(td, (struct linux_getitimer_args *)uap));
1247 error = copyin(uap->itv, &ls, sizeof(ls));
1250 B2L_ITIMERVAL(&aitv, &ls);
1252 if (ldebug(setitimer)) {
1253 printf("setitimer: value: sec: %jd, usec: %ld\n",
1254 (intmax_t)aitv.it_value.tv_sec, aitv.it_value.tv_usec);
1255 printf("setitimer: interval: sec: %jd, usec: %ld\n",
1256 (intmax_t)aitv.it_interval.tv_sec, aitv.it_interval.tv_usec);
1259 error = kern_setitimer(td, uap->which, &aitv, &oitv);
1260 if (error != 0 || uap->oitv == NULL)
1262 B2L_ITIMERVAL(&ls, &oitv);
1264 return (copyout(&ls, uap->oitv, sizeof(ls)));
1268 linux_getitimer(struct thread *td, struct linux_getitimer_args *uap)
1271 struct l_itimerval ls;
1272 struct itimerval aitv;
1275 if (ldebug(getitimer))
1276 printf(ARGS(getitimer, "%p"), (void *)uap->itv);
1278 error = kern_getitimer(td, uap->which, &aitv);
1281 B2L_ITIMERVAL(&ls, &aitv);
1282 return (copyout(&ls, uap->itv, sizeof(ls)));
1285 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1287 linux_nice(struct thread *td, struct linux_nice_args *args)
1289 struct setpriority_args bsd_args;
1291 bsd_args.which = PRIO_PROCESS;
1292 bsd_args.who = 0; /* current process */
1293 bsd_args.prio = args->inc;
1294 return (sys_setpriority(td, &bsd_args));
1296 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1299 linux_setgroups(struct thread *td, struct linux_setgroups_args *args)
1301 struct ucred *newcred, *oldcred;
1302 l_gid_t *linux_gidset;
1307 ngrp = args->gidsetsize;
1308 if (ngrp < 0 || ngrp >= ngroups_max + 1)
1310 linux_gidset = malloc(ngrp * sizeof(*linux_gidset), M_LINUX, M_WAITOK);
1311 error = copyin(args->grouplist, linux_gidset, ngrp * sizeof(l_gid_t));
1315 crextend(newcred, ngrp + 1);
1318 oldcred = p->p_ucred;
1319 crcopy(newcred, oldcred);
1322 * cr_groups[0] holds egid. Setting the whole set from
1323 * the supplied set will cause egid to be changed too.
1324 * Keep cr_groups[0] unchanged to prevent that.
1327 if ((error = priv_check_cred(oldcred, PRIV_CRED_SETGROUPS, 0)) != 0) {
1334 newcred->cr_ngroups = ngrp + 1;
1336 bsd_gidset = newcred->cr_groups;
1339 bsd_gidset[ngrp + 1] = linux_gidset[ngrp];
1343 newcred->cr_ngroups = 1;
1346 proc_set_cred(p, newcred);
1351 free(linux_gidset, M_LINUX);
1356 linux_getgroups(struct thread *td, struct linux_getgroups_args *args)
1359 l_gid_t *linux_gidset;
1361 int bsd_gidsetsz, ngrp, error;
1363 cred = td->td_ucred;
1364 bsd_gidset = cred->cr_groups;
1365 bsd_gidsetsz = cred->cr_ngroups - 1;
1368 * cr_groups[0] holds egid. Returning the whole set
1369 * here will cause a duplicate. Exclude cr_groups[0]
1373 if ((ngrp = args->gidsetsize) == 0) {
1374 td->td_retval[0] = bsd_gidsetsz;
1378 if (ngrp < bsd_gidsetsz)
1382 linux_gidset = malloc(bsd_gidsetsz * sizeof(*linux_gidset),
1384 while (ngrp < bsd_gidsetsz) {
1385 linux_gidset[ngrp] = bsd_gidset[ngrp + 1];
1389 error = copyout(linux_gidset, args->grouplist, ngrp * sizeof(l_gid_t));
1390 free(linux_gidset, M_LINUX);
1394 td->td_retval[0] = ngrp;
1399 linux_setrlimit(struct thread *td, struct linux_setrlimit_args *args)
1401 struct rlimit bsd_rlim;
1402 struct l_rlimit rlim;
1407 if (ldebug(setrlimit))
1408 printf(ARGS(setrlimit, "%d, %p"),
1409 args->resource, (void *)args->rlim);
1412 if (args->resource >= LINUX_RLIM_NLIMITS)
1415 which = linux_to_bsd_resource[args->resource];
1419 error = copyin(args->rlim, &rlim, sizeof(rlim));
1423 bsd_rlim.rlim_cur = (rlim_t)rlim.rlim_cur;
1424 bsd_rlim.rlim_max = (rlim_t)rlim.rlim_max;
1425 return (kern_setrlimit(td, which, &bsd_rlim));
1428 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1430 linux_old_getrlimit(struct thread *td, struct linux_old_getrlimit_args *args)
1432 struct l_rlimit rlim;
1433 struct rlimit bsd_rlim;
1437 if (ldebug(old_getrlimit))
1438 printf(ARGS(old_getrlimit, "%d, %p"),
1439 args->resource, (void *)args->rlim);
1442 if (args->resource >= LINUX_RLIM_NLIMITS)
1445 which = linux_to_bsd_resource[args->resource];
1449 lim_rlimit(td, which, &bsd_rlim);
1451 #ifdef COMPAT_LINUX32
1452 rlim.rlim_cur = (unsigned int)bsd_rlim.rlim_cur;
1453 if (rlim.rlim_cur == UINT_MAX)
1454 rlim.rlim_cur = INT_MAX;
1455 rlim.rlim_max = (unsigned int)bsd_rlim.rlim_max;
1456 if (rlim.rlim_max == UINT_MAX)
1457 rlim.rlim_max = INT_MAX;
1459 rlim.rlim_cur = (unsigned long)bsd_rlim.rlim_cur;
1460 if (rlim.rlim_cur == ULONG_MAX)
1461 rlim.rlim_cur = LONG_MAX;
1462 rlim.rlim_max = (unsigned long)bsd_rlim.rlim_max;
1463 if (rlim.rlim_max == ULONG_MAX)
1464 rlim.rlim_max = LONG_MAX;
1466 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1468 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1471 linux_getrlimit(struct thread *td, struct linux_getrlimit_args *args)
1473 struct l_rlimit rlim;
1474 struct rlimit bsd_rlim;
1478 if (ldebug(getrlimit))
1479 printf(ARGS(getrlimit, "%d, %p"),
1480 args->resource, (void *)args->rlim);
1483 if (args->resource >= LINUX_RLIM_NLIMITS)
1486 which = linux_to_bsd_resource[args->resource];
1490 lim_rlimit(td, which, &bsd_rlim);
1492 rlim.rlim_cur = (l_ulong)bsd_rlim.rlim_cur;
1493 rlim.rlim_max = (l_ulong)bsd_rlim.rlim_max;
1494 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1498 linux_sched_setscheduler(struct thread *td,
1499 struct linux_sched_setscheduler_args *args)
1501 struct sched_param sched_param;
1506 if (ldebug(sched_setscheduler))
1507 printf(ARGS(sched_setscheduler, "%d, %d, %p"),
1508 args->pid, args->policy, (const void *)args->param);
1511 switch (args->policy) {
1512 case LINUX_SCHED_OTHER:
1513 policy = SCHED_OTHER;
1515 case LINUX_SCHED_FIFO:
1516 policy = SCHED_FIFO;
1518 case LINUX_SCHED_RR:
1525 error = copyin(args->param, &sched_param, sizeof(sched_param));
1529 tdt = linux_tdfind(td, args->pid, -1);
1533 error = kern_sched_setscheduler(td, tdt, policy, &sched_param);
1534 PROC_UNLOCK(tdt->td_proc);
1539 linux_sched_getscheduler(struct thread *td,
1540 struct linux_sched_getscheduler_args *args)
1546 if (ldebug(sched_getscheduler))
1547 printf(ARGS(sched_getscheduler, "%d"), args->pid);
1550 tdt = linux_tdfind(td, args->pid, -1);
1554 error = kern_sched_getscheduler(td, tdt, &policy);
1555 PROC_UNLOCK(tdt->td_proc);
1559 td->td_retval[0] = LINUX_SCHED_OTHER;
1562 td->td_retval[0] = LINUX_SCHED_FIFO;
1565 td->td_retval[0] = LINUX_SCHED_RR;
1572 linux_sched_get_priority_max(struct thread *td,
1573 struct linux_sched_get_priority_max_args *args)
1575 struct sched_get_priority_max_args bsd;
1578 if (ldebug(sched_get_priority_max))
1579 printf(ARGS(sched_get_priority_max, "%d"), args->policy);
1582 switch (args->policy) {
1583 case LINUX_SCHED_OTHER:
1584 bsd.policy = SCHED_OTHER;
1586 case LINUX_SCHED_FIFO:
1587 bsd.policy = SCHED_FIFO;
1589 case LINUX_SCHED_RR:
1590 bsd.policy = SCHED_RR;
1595 return (sys_sched_get_priority_max(td, &bsd));
1599 linux_sched_get_priority_min(struct thread *td,
1600 struct linux_sched_get_priority_min_args *args)
1602 struct sched_get_priority_min_args bsd;
1605 if (ldebug(sched_get_priority_min))
1606 printf(ARGS(sched_get_priority_min, "%d"), args->policy);
1609 switch (args->policy) {
1610 case LINUX_SCHED_OTHER:
1611 bsd.policy = SCHED_OTHER;
1613 case LINUX_SCHED_FIFO:
1614 bsd.policy = SCHED_FIFO;
1616 case LINUX_SCHED_RR:
1617 bsd.policy = SCHED_RR;
1622 return (sys_sched_get_priority_min(td, &bsd));
1625 #define REBOOT_CAD_ON 0x89abcdef
1626 #define REBOOT_CAD_OFF 0
1627 #define REBOOT_HALT 0xcdef0123
1628 #define REBOOT_RESTART 0x01234567
1629 #define REBOOT_RESTART2 0xA1B2C3D4
1630 #define REBOOT_POWEROFF 0x4321FEDC
1631 #define REBOOT_MAGIC1 0xfee1dead
1632 #define REBOOT_MAGIC2 0x28121969
1633 #define REBOOT_MAGIC2A 0x05121996
1634 #define REBOOT_MAGIC2B 0x16041998
1637 linux_reboot(struct thread *td, struct linux_reboot_args *args)
1639 struct reboot_args bsd_args;
1643 printf(ARGS(reboot, "0x%x"), args->cmd);
1646 if (args->magic1 != REBOOT_MAGIC1)
1649 switch (args->magic2) {
1651 case REBOOT_MAGIC2A:
1652 case REBOOT_MAGIC2B:
1658 switch (args->cmd) {
1660 case REBOOT_CAD_OFF:
1661 return (priv_check(td, PRIV_REBOOT));
1663 bsd_args.opt = RB_HALT;
1665 case REBOOT_RESTART:
1666 case REBOOT_RESTART2:
1669 case REBOOT_POWEROFF:
1670 bsd_args.opt = RB_POWEROFF;
1675 return (sys_reboot(td, &bsd_args));
1680 * The FreeBSD native getpid(2), getgid(2) and getuid(2) also modify
1681 * td->td_retval[1] when COMPAT_43 is defined. This clobbers registers that
1682 * are assumed to be preserved. The following lightweight syscalls fixes
1683 * this. See also linux_getgid16() and linux_getuid16() in linux_uid16.c
1685 * linux_getpid() - MP SAFE
1686 * linux_getgid() - MP SAFE
1687 * linux_getuid() - MP SAFE
1691 linux_getpid(struct thread *td, struct linux_getpid_args *args)
1696 printf(ARGS(getpid, ""));
1698 td->td_retval[0] = td->td_proc->p_pid;
1704 linux_gettid(struct thread *td, struct linux_gettid_args *args)
1706 struct linux_emuldata *em;
1710 printf(ARGS(gettid, ""));
1714 KASSERT(em != NULL, ("gettid: emuldata not found.\n"));
1716 td->td_retval[0] = em->em_tid;
1723 linux_getppid(struct thread *td, struct linux_getppid_args *args)
1727 if (ldebug(getppid))
1728 printf(ARGS(getppid, ""));
1731 td->td_retval[0] = kern_getppid(td);
1736 linux_getgid(struct thread *td, struct linux_getgid_args *args)
1741 printf(ARGS(getgid, ""));
1744 td->td_retval[0] = td->td_ucred->cr_rgid;
1749 linux_getuid(struct thread *td, struct linux_getuid_args *args)
1754 printf(ARGS(getuid, ""));
1757 td->td_retval[0] = td->td_ucred->cr_ruid;
1763 linux_getsid(struct thread *td, struct linux_getsid_args *args)
1765 struct getsid_args bsd;
1769 printf(ARGS(getsid, "%i"), args->pid);
1772 bsd.pid = args->pid;
1773 return (sys_getsid(td, &bsd));
1777 linux_nosys(struct thread *td, struct nosys_args *ignore)
1784 linux_getpriority(struct thread *td, struct linux_getpriority_args *args)
1786 struct getpriority_args bsd_args;
1790 if (ldebug(getpriority))
1791 printf(ARGS(getpriority, "%i, %i"), args->which, args->who);
1794 bsd_args.which = args->which;
1795 bsd_args.who = args->who;
1796 error = sys_getpriority(td, &bsd_args);
1797 td->td_retval[0] = 20 - td->td_retval[0];
1802 linux_sethostname(struct thread *td, struct linux_sethostname_args *args)
1807 if (ldebug(sethostname))
1808 printf(ARGS(sethostname, "*, %i"), args->len);
1812 name[1] = KERN_HOSTNAME;
1813 return (userland_sysctl(td, name, 2, 0, 0, 0, args->hostname,
1818 linux_setdomainname(struct thread *td, struct linux_setdomainname_args *args)
1823 if (ldebug(setdomainname))
1824 printf(ARGS(setdomainname, "*, %i"), args->len);
1828 name[1] = KERN_NISDOMAINNAME;
1829 return (userland_sysctl(td, name, 2, 0, 0, 0, args->name,
1834 linux_exit_group(struct thread *td, struct linux_exit_group_args *args)
1838 if (ldebug(exit_group))
1839 printf(ARGS(exit_group, "%i"), args->error_code);
1842 LINUX_CTR2(exit_group, "thread(%d) (%d)", td->td_tid,
1846 * XXX: we should send a signal to the parent if
1847 * SIGNAL_EXIT_GROUP is set. We ignore that (temporarily?)
1848 * as it doesnt occur often.
1850 exit1(td, args->error_code, 0);
1854 #define _LINUX_CAPABILITY_VERSION 0x19980330
1856 struct l_user_cap_header {
1861 struct l_user_cap_data {
1868 linux_capget(struct thread *td, struct linux_capget_args *args)
1870 struct l_user_cap_header luch;
1871 struct l_user_cap_data lucd;
1874 if (args->hdrp == NULL)
1877 error = copyin(args->hdrp, &luch, sizeof(luch));
1881 if (luch.version != _LINUX_CAPABILITY_VERSION) {
1882 luch.version = _LINUX_CAPABILITY_VERSION;
1883 error = copyout(&luch, args->hdrp, sizeof(luch));
1894 * The current implementation doesn't support setting
1895 * a capability (it's essentially a stub) so indicate
1896 * that no capabilities are currently set or available
1899 bzero (&lucd, sizeof(lucd));
1900 error = copyout(&lucd, args->datap, sizeof(lucd));
1907 linux_capset(struct thread *td, struct linux_capset_args *args)
1909 struct l_user_cap_header luch;
1910 struct l_user_cap_data lucd;
1913 if (args->hdrp == NULL || args->datap == NULL)
1916 error = copyin(args->hdrp, &luch, sizeof(luch));
1920 if (luch.version != _LINUX_CAPABILITY_VERSION) {
1921 luch.version = _LINUX_CAPABILITY_VERSION;
1922 error = copyout(&luch, args->hdrp, sizeof(luch));
1931 error = copyin(args->datap, &lucd, sizeof(lucd));
1935 /* We currently don't support setting any capabilities. */
1936 if (lucd.effective || lucd.permitted || lucd.inheritable) {
1938 "capset effective=0x%x, permitted=0x%x, "
1939 "inheritable=0x%x is not implemented",
1940 (int)lucd.effective, (int)lucd.permitted,
1941 (int)lucd.inheritable);
1949 linux_prctl(struct thread *td, struct linux_prctl_args *args)
1951 int error = 0, max_size;
1952 struct proc *p = td->td_proc;
1953 char comm[LINUX_MAX_COMM_LEN];
1954 struct linux_emuldata *em;
1959 printf(ARGS(prctl, "%d, %ju, %ju, %ju, %ju"), args->option,
1960 (uintmax_t)args->arg2, (uintmax_t)args->arg3,
1961 (uintmax_t)args->arg4, (uintmax_t)args->arg5);
1964 switch (args->option) {
1965 case LINUX_PR_SET_PDEATHSIG:
1966 if (!LINUX_SIG_VALID(args->arg2))
1969 KASSERT(em != NULL, ("prctl: emuldata not found.\n"));
1970 em->pdeath_signal = args->arg2;
1972 case LINUX_PR_GET_PDEATHSIG:
1974 KASSERT(em != NULL, ("prctl: emuldata not found.\n"));
1975 pdeath_signal = em->pdeath_signal;
1976 error = copyout(&pdeath_signal,
1977 (void *)(register_t)args->arg2,
1978 sizeof(pdeath_signal));
1980 case LINUX_PR_GET_KEEPCAPS:
1982 * Indicate that we always clear the effective and
1983 * permitted capability sets when the user id becomes
1984 * non-zero (actually the capability sets are simply
1985 * always zero in the current implementation).
1987 td->td_retval[0] = 0;
1989 case LINUX_PR_SET_KEEPCAPS:
1991 * Ignore requests to keep the effective and permitted
1992 * capability sets when the user id becomes non-zero.
1995 case LINUX_PR_SET_NAME:
1997 * To be on the safe side we need to make sure to not
1998 * overflow the size a linux program expects. We already
1999 * do this here in the copyin, so that we don't need to
2002 max_size = MIN(sizeof(comm), sizeof(p->p_comm));
2003 error = copyinstr((void *)(register_t)args->arg2, comm,
2006 /* Linux silently truncates the name if it is too long. */
2007 if (error == ENAMETOOLONG) {
2009 * XXX: copyinstr() isn't documented to populate the
2010 * array completely, so do a copyin() to be on the
2011 * safe side. This should be changed in case
2012 * copyinstr() is changed to guarantee this.
2014 error = copyin((void *)(register_t)args->arg2, comm,
2016 comm[max_size - 1] = '\0';
2022 strlcpy(p->p_comm, comm, sizeof(p->p_comm));
2025 case LINUX_PR_GET_NAME:
2027 strlcpy(comm, p->p_comm, sizeof(comm));
2029 error = copyout(comm, (void *)(register_t)args->arg2,
2041 linux_sched_setparam(struct thread *td,
2042 struct linux_sched_setparam_args *uap)
2044 struct sched_param sched_param;
2049 if (ldebug(sched_setparam))
2050 printf(ARGS(sched_setparam, "%d, *"), uap->pid);
2053 error = copyin(uap->param, &sched_param, sizeof(sched_param));
2057 tdt = linux_tdfind(td, uap->pid, -1);
2061 error = kern_sched_setparam(td, tdt, &sched_param);
2062 PROC_UNLOCK(tdt->td_proc);
2067 linux_sched_getparam(struct thread *td,
2068 struct linux_sched_getparam_args *uap)
2070 struct sched_param sched_param;
2075 if (ldebug(sched_getparam))
2076 printf(ARGS(sched_getparam, "%d, *"), uap->pid);
2079 tdt = linux_tdfind(td, uap->pid, -1);
2083 error = kern_sched_getparam(td, tdt, &sched_param);
2084 PROC_UNLOCK(tdt->td_proc);
2086 error = copyout(&sched_param, uap->param,
2087 sizeof(sched_param));
2092 * Get affinity of a process.
2095 linux_sched_getaffinity(struct thread *td,
2096 struct linux_sched_getaffinity_args *args)
2102 if (ldebug(sched_getaffinity))
2103 printf(ARGS(sched_getaffinity, "%d, %d, *"), args->pid,
2106 if (args->len < sizeof(cpuset_t))
2109 tdt = linux_tdfind(td, args->pid, -1);
2113 PROC_UNLOCK(tdt->td_proc);
2115 error = kern_cpuset_getaffinity(td, CPU_LEVEL_WHICH, CPU_WHICH_TID,
2116 tdt->td_tid, sizeof(cpuset_t), (cpuset_t *)args->user_mask_ptr);
2118 td->td_retval[0] = sizeof(cpuset_t);
2124 * Set affinity of a process.
2127 linux_sched_setaffinity(struct thread *td,
2128 struct linux_sched_setaffinity_args *args)
2133 if (ldebug(sched_setaffinity))
2134 printf(ARGS(sched_setaffinity, "%d, %d, *"), args->pid,
2137 if (args->len < sizeof(cpuset_t))
2140 tdt = linux_tdfind(td, args->pid, -1);
2144 PROC_UNLOCK(tdt->td_proc);
2146 return (kern_cpuset_setaffinity(td, CPU_LEVEL_WHICH, CPU_WHICH_TID,
2147 tdt->td_tid, sizeof(cpuset_t), (cpuset_t *) args->user_mask_ptr));
2150 struct linux_rlimit64 {
2156 linux_prlimit64(struct thread *td, struct linux_prlimit64_args *args)
2158 struct rlimit rlim, nrlim;
2159 struct linux_rlimit64 lrlim;
2166 if (ldebug(prlimit64))
2167 printf(ARGS(prlimit64, "%d, %d, %p, %p"), args->pid,
2168 args->resource, (void *)args->new, (void *)args->old);
2171 if (args->resource >= LINUX_RLIM_NLIMITS)
2174 which = linux_to_bsd_resource[args->resource];
2178 if (args->new != NULL) {
2180 * Note. Unlike FreeBSD where rlim is signed 64-bit Linux
2181 * rlim is unsigned 64-bit. FreeBSD treats negative limits
2182 * as INFINITY so we do not need a conversion even.
2184 error = copyin(args->new, &nrlim, sizeof(nrlim));
2189 flags = PGET_HOLD | PGET_NOTWEXIT;
2190 if (args->new != NULL)
2191 flags |= PGET_CANDEBUG;
2193 flags |= PGET_CANSEE;
2194 error = pget(args->pid, flags, &p);
2198 if (args->old != NULL) {
2200 lim_rlimit_proc(p, which, &rlim);
2202 if (rlim.rlim_cur == RLIM_INFINITY)
2203 lrlim.rlim_cur = LINUX_RLIM_INFINITY;
2205 lrlim.rlim_cur = rlim.rlim_cur;
2206 if (rlim.rlim_max == RLIM_INFINITY)
2207 lrlim.rlim_max = LINUX_RLIM_INFINITY;
2209 lrlim.rlim_max = rlim.rlim_max;
2210 error = copyout(&lrlim, args->old, sizeof(lrlim));
2215 if (args->new != NULL)
2216 error = kern_proc_setrlimit(td, p, which, &nrlim);
2224 linux_pselect6(struct thread *td, struct linux_pselect6_args *args)
2226 struct timeval utv, tv0, tv1, *tvp;
2227 struct l_pselect6arg lpse6;
2228 struct l_timespec lts;
2229 struct timespec uts;
2236 if (args->sig != NULL) {
2237 error = copyin(args->sig, &lpse6, sizeof(lpse6));
2240 if (lpse6.ss_len != sizeof(l_ss))
2242 if (lpse6.ss != 0) {
2243 error = copyin(PTRIN(lpse6.ss), &l_ss,
2247 linux_to_bsd_sigset(&l_ss, &ss);
2253 * Currently glibc changes nanosecond number to microsecond.
2254 * This mean losing precision but for now it is hardly seen.
2256 if (args->tsp != NULL) {
2257 error = copyin(args->tsp, <s, sizeof(lts));
2260 error = linux_to_native_timespec(&uts, <s);
2264 TIMESPEC_TO_TIMEVAL(&utv, &uts);
2265 if (itimerfix(&utv))
2273 error = kern_pselect(td, args->nfds, args->readfds, args->writefds,
2274 args->exceptfds, tvp, ssp, LINUX_NFDBITS);
2276 if (error == 0 && args->tsp != NULL) {
2277 if (td->td_retval[0] != 0) {
2279 * Compute how much time was left of the timeout,
2280 * by subtracting the current time and the time
2281 * before we started the call, and subtracting
2282 * that result from the user-supplied value.
2286 timevalsub(&tv1, &tv0);
2287 timevalsub(&utv, &tv1);
2293 TIMEVAL_TO_TIMESPEC(&utv, &uts);
2295 error = native_to_linux_timespec(<s, &uts);
2297 error = copyout(<s, args->tsp, sizeof(lts));
2304 linux_ppoll(struct thread *td, struct linux_ppoll_args *args)
2306 struct timespec ts0, ts1;
2307 struct l_timespec lts;
2308 struct timespec uts, *tsp;
2314 if (args->sset != NULL) {
2315 if (args->ssize != sizeof(l_ss))
2317 error = copyin(args->sset, &l_ss, sizeof(l_ss));
2320 linux_to_bsd_sigset(&l_ss, &ss);
2324 if (args->tsp != NULL) {
2325 error = copyin(args->tsp, <s, sizeof(lts));
2328 error = linux_to_native_timespec(&uts, <s);
2337 error = kern_poll(td, args->fds, args->nfds, tsp, ssp);
2339 if (error == 0 && args->tsp != NULL) {
2340 if (td->td_retval[0]) {
2342 timespecsub(&ts1, &ts0);
2343 timespecsub(&uts, &ts1);
2345 timespecclear(&uts);
2347 timespecclear(&uts);
2349 error = native_to_linux_timespec(<s, &uts);
2351 error = copyout(<s, args->tsp, sizeof(lts));
2357 #if defined(DEBUG) || defined(KTR)
2358 /* XXX: can be removed when every ldebug(...) and KTR stuff are removed. */
2360 #ifdef COMPAT_LINUX32
2361 #define L_MAXSYSCALL LINUX32_SYS_MAXSYSCALL
2363 #define L_MAXSYSCALL LINUX_SYS_MAXSYSCALL
2366 u_char linux_debug_map[howmany(L_MAXSYSCALL, sizeof(u_char))];
2369 linux_debug(int syscall, int toggle, int global)
2373 char c = toggle ? 0 : 0xff;
2375 memset(linux_debug_map, c, sizeof(linux_debug_map));
2378 if (syscall < 0 || syscall >= L_MAXSYSCALL)
2381 clrbit(linux_debug_map, syscall);
2383 setbit(linux_debug_map, syscall);
2389 * Usage: sysctl linux.debug=<syscall_nr>.<0/1>
2391 * E.g.: sysctl linux.debug=21.0
2393 * As a special case, syscall "all" will apply to all syscalls globally.
2395 #define LINUX_MAX_DEBUGSTR 16
2397 linux_sysctl_debug(SYSCTL_HANDLER_ARGS)
2399 char value[LINUX_MAX_DEBUGSTR], *p;
2400 int error, sysc, toggle;
2404 error = sysctl_handle_string(oidp, value, LINUX_MAX_DEBUGSTR, req);
2405 if (error || req->newptr == NULL)
2407 for (p = value; *p != '\0' && *p != '.'; p++);
2411 sysc = strtol(value, NULL, 0);
2412 toggle = strtol(p, NULL, 0);
2413 if (strcmp(value, "all") == 0)
2415 error = linux_debug(sysc, toggle, global);
2419 #endif /* DEBUG || KTR */
2422 linux_sched_rr_get_interval(struct thread *td,
2423 struct linux_sched_rr_get_interval_args *uap)
2426 struct l_timespec lts;
2431 * According to man in case the invalid pid specified
2432 * EINVAL should be returned.
2437 tdt = linux_tdfind(td, uap->pid, -1);
2441 error = kern_sched_rr_get_interval_td(td, tdt, &ts);
2442 PROC_UNLOCK(tdt->td_proc);
2445 error = native_to_linux_timespec(<s, &ts);
2448 return (copyout(<s, uap->interval, sizeof(lts)));
2452 * In case when the Linux thread is the initial thread in
2453 * the thread group thread id is equal to the process id.
2454 * Glibc depends on this magic (assert in pthread_getattr_np.c).
2457 linux_tdfind(struct thread *td, lwpid_t tid, pid_t pid)
2459 struct linux_emuldata *em;
2464 if (tid == 0 || tid == td->td_tid) {
2466 PROC_LOCK(tdt->td_proc);
2467 } else if (tid > PID_MAX)
2468 tdt = tdfind(tid, pid);
2471 * Initial thread where the tid equal to the pid.
2475 if (SV_PROC_ABI(p) != SV_ABI_LINUX) {
2477 * p is not a Linuxulator process.
2482 FOREACH_THREAD_IN_PROC(p, tdt) {
2484 if (tid == em->em_tid)
2496 linux_to_bsd_waitopts(int options, int *bsdopts)
2499 if (options & LINUX_WNOHANG)
2500 *bsdopts |= WNOHANG;
2501 if (options & LINUX_WUNTRACED)
2502 *bsdopts |= WUNTRACED;
2503 if (options & LINUX_WEXITED)
2504 *bsdopts |= WEXITED;
2505 if (options & LINUX_WCONTINUED)
2506 *bsdopts |= WCONTINUED;
2507 if (options & LINUX_WNOWAIT)
2508 *bsdopts |= WNOWAIT;
2510 if (options & __WCLONE)
2511 *bsdopts |= WLINUXCLONE;
2515 linux_getrandom(struct thread *td, struct linux_getrandom_args *args)
2521 if (args->flags & ~(LINUX_GRND_NONBLOCK|LINUX_GRND_RANDOM))
2523 if (args->count > INT_MAX)
2524 args->count = INT_MAX;
2526 iov.iov_base = args->buf;
2527 iov.iov_len = args->count;
2531 uio.uio_resid = iov.iov_len;
2532 uio.uio_segflg = UIO_USERSPACE;
2533 uio.uio_rw = UIO_READ;
2536 error = read_random_uio(&uio, args->flags & LINUX_GRND_NONBLOCK);
2538 td->td_retval[0] = args->count - uio.uio_resid;
2543 linux_mincore(struct thread *td, struct linux_mincore_args *args)
2546 /* Needs to be page-aligned */
2547 if (args->start & PAGE_MASK)
2549 return (kern_mincore(td, args->start, args->len, args->vec));