2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2002 Doug Rabson
5 * Copyright (c) 1994-1995 Søren Schmidt
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer
13 * in this position and unchanged.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include "opt_compat.h"
37 #include <sys/param.h>
38 #include <sys/blist.h>
39 #include <sys/fcntl.h>
41 #include <sys/imgact_aout.h>
44 #include <sys/kernel.h>
45 #include <sys/limits.h>
47 #include <sys/malloc.h>
49 #include <sys/mount.h>
50 #include <sys/mutex.h>
51 #include <sys/namei.h>
54 #include <sys/procctl.h>
55 #include <sys/reboot.h>
56 #include <sys/racct.h>
57 #include <sys/random.h>
58 #include <sys/resourcevar.h>
59 #include <sys/sched.h>
61 #include <sys/signalvar.h>
63 #include <sys/syscallsubr.h>
64 #include <sys/sysctl.h>
65 #include <sys/sysproto.h>
66 #include <sys/systm.h>
68 #include <sys/vmmeter.h>
69 #include <sys/vnode.h>
71 #include <sys/cpuset.h>
74 #include <security/mac/mac_framework.h>
78 #include <vm/vm_kern.h>
79 #include <vm/vm_map.h>
80 #include <vm/vm_extern.h>
81 #include <vm/vm_object.h>
82 #include <vm/swap_pager.h>
85 #include <machine/../linux32/linux.h>
86 #include <machine/../linux32/linux32_proto.h>
88 #include <machine/../linux/linux.h>
89 #include <machine/../linux/linux_proto.h>
92 #include <compat/linux/linux_dtrace.h>
93 #include <compat/linux/linux_file.h>
94 #include <compat/linux/linux_mib.h>
95 #include <compat/linux/linux_signal.h>
96 #include <compat/linux/linux_timer.h>
97 #include <compat/linux/linux_util.h>
98 #include <compat/linux/linux_sysproto.h>
99 #include <compat/linux/linux_emul.h>
100 #include <compat/linux/linux_misc.h>
103 * Special DTrace provider for the linuxulator.
105 * In this file we define the provider for the entire linuxulator. All
106 * modules (= files of the linuxulator) use it.
108 * We define a different name depending on the emulated bitsize, see
109 * ../../<ARCH>/linux{,32}/linux.h, e.g.:
110 * native bitsize = linuxulator
111 * amd64, 32bit emulation = linuxulator32
113 LIN_SDT_PROVIDER_DEFINE(LINUX_DTRACE);
115 int stclohz; /* Statistics clock frequency */
117 static unsigned int linux_to_bsd_resource[LINUX_RLIM_NLIMITS] = {
118 RLIMIT_CPU, RLIMIT_FSIZE, RLIMIT_DATA, RLIMIT_STACK,
119 RLIMIT_CORE, RLIMIT_RSS, RLIMIT_NPROC, RLIMIT_NOFILE,
120 RLIMIT_MEMLOCK, RLIMIT_AS
124 l_long uptime; /* Seconds since boot */
125 l_ulong loads[3]; /* 1, 5, and 15 minute load averages */
126 #define LINUX_SYSINFO_LOADS_SCALE 65536
127 l_ulong totalram; /* Total usable main memory size */
128 l_ulong freeram; /* Available memory size */
129 l_ulong sharedram; /* Amount of shared memory */
130 l_ulong bufferram; /* Memory used by buffers */
131 l_ulong totalswap; /* Total swap space size */
132 l_ulong freeswap; /* swap space still available */
133 l_ushort procs; /* Number of current processes */
138 char _f[20-2*sizeof(l_long)-sizeof(l_int)]; /* padding */
141 struct l_pselect6arg {
146 static int linux_utimensat_nsec_valid(l_long);
150 linux_sysinfo(struct thread *td, struct linux_sysinfo_args *args)
152 struct l_sysinfo sysinfo;
157 bzero(&sysinfo, sizeof(sysinfo));
161 sysinfo.uptime = ts.tv_sec;
163 /* Use the information from the mib to get our load averages */
164 for (i = 0; i < 3; i++)
165 sysinfo.loads[i] = averunnable.ldavg[i] *
166 LINUX_SYSINFO_LOADS_SCALE / averunnable.fscale;
168 sysinfo.totalram = physmem * PAGE_SIZE;
169 sysinfo.freeram = sysinfo.totalram - vm_wire_count() * PAGE_SIZE;
171 sysinfo.sharedram = 0;
172 mtx_lock(&vm_object_list_mtx);
173 TAILQ_FOREACH(object, &vm_object_list, object_list)
174 if (object->shadow_count > 1)
175 sysinfo.sharedram += object->resident_page_count;
176 mtx_unlock(&vm_object_list_mtx);
178 sysinfo.sharedram *= PAGE_SIZE;
179 sysinfo.bufferram = 0;
181 swap_pager_status(&i, &j);
182 sysinfo.totalswap = i * PAGE_SIZE;
183 sysinfo.freeswap = (i - j) * PAGE_SIZE;
185 sysinfo.procs = nprocs;
187 /* The following are only present in newer Linux kernels. */
188 sysinfo.totalbig = 0;
190 sysinfo.mem_unit = 1;
192 return (copyout(&sysinfo, args->info, sizeof(sysinfo)));
195 #ifdef LINUX_LEGACY_SYSCALLS
197 linux_alarm(struct thread *td, struct linux_alarm_args *args)
199 struct itimerval it, old_it;
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;
229 linux_brk(struct thread *td, struct linux_brk_args *args)
231 struct vmspace *vm = td->td_proc->p_vmspace;
234 old = (uintptr_t)vm->vm_daddr + ctob(vm->vm_dsize);
235 new = (uintptr_t)args->dsend;
236 if ((caddr_t)new > vm->vm_daddr && !kern_break(td, &new))
237 td->td_retval[0] = (register_t)new;
239 td->td_retval[0] = (register_t)old;
244 #if defined(__i386__)
245 /* XXX: what about amd64/linux32? */
248 linux_uselib(struct thread *td, struct linux_uselib_args *args)
254 vm_map_entry_t entry;
257 unsigned long file_offset;
258 unsigned long bss_size;
262 bool locked, opened, textset;
264 LCONVPATHEXIST(td, args->library, &library);
272 NDINIT(&ni, LOOKUP, ISOPEN | FOLLOW | LOCKLEAF | AUDITVNODE1,
273 UIO_SYSSPACE, library, td);
280 NDFREE(&ni, NDF_ONLY_PNBUF);
283 * From here on down, we have a locked vnode that must be unlocked.
284 * XXX: The code below largely duplicates exec_check_permissions().
289 error = VOP_GETATTR(vp, &attr, td->td_ucred);
293 if ((vp->v_mount->mnt_flag & MNT_NOEXEC) ||
294 ((attr.va_mode & 0111) == 0) || (attr.va_type != VREG)) {
295 /* EACCESS is what exec(2) returns. */
301 if (attr.va_size == 0) {
306 /* Can we access it? */
307 error = VOP_ACCESS(vp, VEXEC, td->td_ucred, td);
312 * XXX: This should use vn_open() so that it is properly authorized,
313 * and to reduce code redundancy all over the place here.
314 * XXX: Not really, it duplicates far more of exec_check_permissions()
318 error = mac_vnode_check_open(td->td_ucred, vp, VREAD);
322 error = VOP_OPEN(vp, FREAD, td->td_ucred, td, NULL);
327 /* Pull in executable header into exec_map */
328 error = vm_mmap(exec_map, (vm_offset_t *)&a_out, PAGE_SIZE,
329 VM_PROT_READ, VM_PROT_READ, 0, OBJT_VNODE, vp, 0);
333 /* Is it a Linux binary ? */
334 if (((a_out->a_magic >> 16) & 0xff) != 0x64) {
340 * While we are here, we should REALLY do some more checks
343 /* Set file/virtual offset based on a.out variant. */
344 switch ((int)(a_out->a_magic & 0xffff)) {
345 case 0413: /* ZMAGIC */
348 case 0314: /* QMAGIC */
356 bss_size = round_page(a_out->a_bss);
358 /* Check various fields in header for validity/bounds. */
359 if (a_out->a_text & PAGE_MASK || a_out->a_data & PAGE_MASK) {
364 /* text + data can't exceed file size */
365 if (a_out->a_data + a_out->a_text > attr.va_size) {
371 * text/data/bss must not exceed limits
372 * XXX - this is not complete. it should check current usage PLUS
373 * the resources needed by this library.
375 PROC_LOCK(td->td_proc);
376 if (a_out->a_text > maxtsiz ||
377 a_out->a_data + bss_size > lim_cur_proc(td->td_proc, RLIMIT_DATA) ||
378 racct_set(td->td_proc, RACCT_DATA, a_out->a_data +
380 PROC_UNLOCK(td->td_proc);
384 PROC_UNLOCK(td->td_proc);
387 * Prevent more writers.
389 error = VOP_SET_TEXT(vp);
395 * Lock no longer needed
401 * Check if file_offset page aligned. Currently we cannot handle
402 * misalinged file offsets, and so we read in the entire image
405 if (file_offset & PAGE_MASK) {
406 /* Map text+data read/write/execute */
408 /* a_entry is the load address and is page aligned */
409 vmaddr = trunc_page(a_out->a_entry);
411 /* get anon user mapping, read+write+execute */
412 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0,
413 &vmaddr, a_out->a_text + a_out->a_data, 0, VMFS_NO_SPACE,
414 VM_PROT_ALL, VM_PROT_ALL, 0);
418 error = vn_rdwr(UIO_READ, vp, (void *)vmaddr, file_offset,
419 a_out->a_text + a_out->a_data, UIO_USERSPACE, 0,
420 td->td_ucred, NOCRED, &aresid, td);
429 * for QMAGIC, a_entry is 20 bytes beyond the load address
430 * to skip the executable header
432 vmaddr = trunc_page(a_out->a_entry);
435 * Map it all into the process's space as a single
436 * copy-on-write "data" segment.
438 map = &td->td_proc->p_vmspace->vm_map;
439 error = vm_mmap(map, &vmaddr,
440 a_out->a_text + a_out->a_data, VM_PROT_ALL, VM_PROT_ALL,
441 MAP_PRIVATE | MAP_FIXED, OBJT_VNODE, vp, file_offset);
445 if (!vm_map_lookup_entry(map, vmaddr, &entry)) {
450 entry->eflags |= MAP_ENTRY_VN_EXEC;
456 /* Calculate BSS start address */
457 vmaddr = trunc_page(a_out->a_entry) + a_out->a_text +
460 /* allocate some 'anon' space */
461 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0,
462 &vmaddr, bss_size, 0, VMFS_NO_SPACE, VM_PROT_ALL,
473 VOP_CLOSE(vp, FREAD, td->td_ucred, td);
478 VOP_LOCK(vp, LK_SHARED | LK_RETRY);
480 VOP_UNSET_TEXT_CHECKED(vp);
485 /* Release the temporary mapping. */
487 kmap_free_wakeup(exec_map, (vm_offset_t)a_out, PAGE_SIZE);
492 #endif /* __i386__ */
494 #ifdef LINUX_LEGACY_SYSCALLS
496 linux_select(struct thread *td, struct linux_select_args *args)
499 struct timeval tv0, tv1, utv, *tvp;
503 * Store current time for computation of the amount of
507 if ((error = copyin(args->timeout, <v, sizeof(ltv))))
509 utv.tv_sec = ltv.tv_sec;
510 utv.tv_usec = ltv.tv_usec;
512 if (itimerfix(&utv)) {
514 * The timeval was invalid. Convert it to something
515 * valid that will act as it does under Linux.
517 utv.tv_sec += utv.tv_usec / 1000000;
518 utv.tv_usec %= 1000000;
519 if (utv.tv_usec < 0) {
521 utv.tv_usec += 1000000;
531 error = kern_select(td, args->nfds, args->readfds, args->writefds,
532 args->exceptfds, tvp, LINUX_NFDBITS);
537 if (td->td_retval[0]) {
539 * Compute how much time was left of the timeout,
540 * by subtracting the current time and the time
541 * before we started the call, and subtracting
542 * that result from the user-supplied value.
545 timevalsub(&tv1, &tv0);
546 timevalsub(&utv, &tv1);
551 ltv.tv_sec = utv.tv_sec;
552 ltv.tv_usec = utv.tv_usec;
553 if ((error = copyout(<v, args->timeout, sizeof(ltv))))
563 linux_mremap(struct thread *td, struct linux_mremap_args *args)
569 if (args->flags & ~(LINUX_MREMAP_FIXED | LINUX_MREMAP_MAYMOVE)) {
570 td->td_retval[0] = 0;
575 * Check for the page alignment.
576 * Linux defines PAGE_MASK to be FreeBSD ~PAGE_MASK.
578 if (args->addr & PAGE_MASK) {
579 td->td_retval[0] = 0;
583 args->new_len = round_page(args->new_len);
584 args->old_len = round_page(args->old_len);
586 if (args->new_len > args->old_len) {
587 td->td_retval[0] = 0;
591 if (args->new_len < args->old_len) {
592 addr = args->addr + args->new_len;
593 len = args->old_len - args->new_len;
594 error = kern_munmap(td, addr, len);
597 td->td_retval[0] = error ? 0 : (uintptr_t)args->addr;
601 #define LINUX_MS_ASYNC 0x0001
602 #define LINUX_MS_INVALIDATE 0x0002
603 #define LINUX_MS_SYNC 0x0004
606 linux_msync(struct thread *td, struct linux_msync_args *args)
609 return (kern_msync(td, args->addr, args->len,
610 args->fl & ~LINUX_MS_SYNC));
613 #ifdef LINUX_LEGACY_SYSCALLS
615 linux_time(struct thread *td, struct linux_time_args *args)
623 if (args->tm && (error = copyout(&tm, args->tm, sizeof(tm))))
625 td->td_retval[0] = tm;
630 struct l_times_argv {
633 l_clock_t tms_cutime;
634 l_clock_t tms_cstime;
639 * Glibc versions prior to 2.2.1 always use hard-coded CLK_TCK value.
640 * Since 2.2.1 Glibc uses value exported from kernel via AT_CLKTCK
641 * auxiliary vector entry.
645 #define CONVOTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK))
646 #define CONVNTCK(r) (r.tv_sec * stclohz + r.tv_usec / (1000000 / stclohz))
648 #define CONVTCK(r) (linux_kernver(td) >= LINUX_KERNVER_2004000 ? \
649 CONVNTCK(r) : CONVOTCK(r))
652 linux_times(struct thread *td, struct linux_times_args *args)
654 struct timeval tv, utime, stime, cutime, cstime;
655 struct l_times_argv tms;
659 if (args->buf != NULL) {
663 calcru(p, &utime, &stime);
665 calccru(p, &cutime, &cstime);
668 tms.tms_utime = CONVTCK(utime);
669 tms.tms_stime = CONVTCK(stime);
671 tms.tms_cutime = CONVTCK(cutime);
672 tms.tms_cstime = CONVTCK(cstime);
674 if ((error = copyout(&tms, args->buf, sizeof(tms))))
679 td->td_retval[0] = (int)CONVTCK(tv);
684 linux_newuname(struct thread *td, struct linux_newuname_args *args)
686 struct l_new_utsname utsname;
687 char osname[LINUX_MAX_UTSNAME];
688 char osrelease[LINUX_MAX_UTSNAME];
691 linux_get_osname(td, osname);
692 linux_get_osrelease(td, osrelease);
694 bzero(&utsname, sizeof(utsname));
695 strlcpy(utsname.sysname, osname, LINUX_MAX_UTSNAME);
696 getcredhostname(td->td_ucred, utsname.nodename, LINUX_MAX_UTSNAME);
697 getcreddomainname(td->td_ucred, utsname.domainname, LINUX_MAX_UTSNAME);
698 strlcpy(utsname.release, osrelease, LINUX_MAX_UTSNAME);
699 strlcpy(utsname.version, version, LINUX_MAX_UTSNAME);
700 for (p = utsname.version; *p != '\0'; ++p)
705 strlcpy(utsname.machine, linux_kplatform, LINUX_MAX_UTSNAME);
707 return (copyout(&utsname, args->buf, sizeof(utsname)));
715 #ifdef LINUX_LEGACY_SYSCALLS
717 linux_utime(struct thread *td, struct linux_utime_args *args)
719 struct timeval tv[2], *tvp;
720 struct l_utimbuf lut;
724 LCONVPATHEXIST(td, args->fname, &fname);
727 if ((error = copyin(args->times, &lut, sizeof lut))) {
731 tv[0].tv_sec = lut.l_actime;
733 tv[1].tv_sec = lut.l_modtime;
739 error = kern_utimesat(td, AT_FDCWD, fname, UIO_SYSSPACE, tvp,
746 #ifdef LINUX_LEGACY_SYSCALLS
748 linux_utimes(struct thread *td, struct linux_utimes_args *args)
751 struct timeval tv[2], *tvp = NULL;
755 LCONVPATHEXIST(td, args->fname, &fname);
757 if (args->tptr != NULL) {
758 if ((error = copyin(args->tptr, ltv, sizeof ltv))) {
762 tv[0].tv_sec = ltv[0].tv_sec;
763 tv[0].tv_usec = ltv[0].tv_usec;
764 tv[1].tv_sec = ltv[1].tv_sec;
765 tv[1].tv_usec = ltv[1].tv_usec;
769 error = kern_utimesat(td, AT_FDCWD, fname, UIO_SYSSPACE,
777 linux_utimensat_nsec_valid(l_long nsec)
780 if (nsec == LINUX_UTIME_OMIT || nsec == LINUX_UTIME_NOW)
782 if (nsec >= 0 && nsec <= 999999999)
788 linux_utimensat(struct thread *td, struct linux_utimensat_args *args)
790 struct l_timespec l_times[2];
791 struct timespec times[2], *timesp = NULL;
793 int error, dfd, flags = 0;
795 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
797 if (args->flags & ~LINUX_AT_SYMLINK_NOFOLLOW)
800 if (args->times != NULL) {
801 error = copyin(args->times, l_times, sizeof(l_times));
805 if (linux_utimensat_nsec_valid(l_times[0].tv_nsec) != 0 ||
806 linux_utimensat_nsec_valid(l_times[1].tv_nsec) != 0)
809 times[0].tv_sec = l_times[0].tv_sec;
810 switch (l_times[0].tv_nsec)
812 case LINUX_UTIME_OMIT:
813 times[0].tv_nsec = UTIME_OMIT;
815 case LINUX_UTIME_NOW:
816 times[0].tv_nsec = UTIME_NOW;
819 times[0].tv_nsec = l_times[0].tv_nsec;
822 times[1].tv_sec = l_times[1].tv_sec;
823 switch (l_times[1].tv_nsec)
825 case LINUX_UTIME_OMIT:
826 times[1].tv_nsec = UTIME_OMIT;
828 case LINUX_UTIME_NOW:
829 times[1].tv_nsec = UTIME_NOW;
832 times[1].tv_nsec = l_times[1].tv_nsec;
837 /* This breaks POSIX, but is what the Linux kernel does
838 * _on purpose_ (documented in the man page for utimensat(2)),
839 * so we must follow that behaviour. */
840 if (times[0].tv_nsec == UTIME_OMIT &&
841 times[1].tv_nsec == UTIME_OMIT)
845 if (args->pathname != NULL)
846 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd);
847 else if (args->flags != 0)
850 if (args->flags & LINUX_AT_SYMLINK_NOFOLLOW)
851 flags |= AT_SYMLINK_NOFOLLOW;
854 error = kern_futimens(td, dfd, timesp, UIO_SYSSPACE);
856 error = kern_utimensat(td, dfd, path, UIO_SYSSPACE, timesp,
857 UIO_SYSSPACE, flags);
864 #ifdef LINUX_LEGACY_SYSCALLS
866 linux_futimesat(struct thread *td, struct linux_futimesat_args *args)
869 struct timeval tv[2], *tvp = NULL;
873 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
874 LCONVPATHEXIST_AT(td, args->filename, &fname, dfd);
876 if (args->utimes != NULL) {
877 if ((error = copyin(args->utimes, ltv, sizeof ltv))) {
881 tv[0].tv_sec = ltv[0].tv_sec;
882 tv[0].tv_usec = ltv[0].tv_usec;
883 tv[1].tv_sec = ltv[1].tv_sec;
884 tv[1].tv_usec = ltv[1].tv_usec;
888 error = kern_utimesat(td, dfd, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
895 linux_common_wait(struct thread *td, int pid, int *statusp,
896 int options, struct __wrusage *wrup)
901 int error, status, tmpstat;
903 if (pid == WAIT_ANY) {
906 } else if (pid < 0) {
915 * For backward compatibility we implicitly add flags WEXITED
918 options |= WEXITED | WTRAPPED;
919 error = kern_wait6(td, idtype, id, &status, options, wrup, &siginfo);
924 tmpstat = status & 0xffff;
925 if (WIFSIGNALED(tmpstat)) {
926 tmpstat = (tmpstat & 0xffffff80) |
927 bsd_to_linux_signal(WTERMSIG(tmpstat));
928 } else if (WIFSTOPPED(tmpstat)) {
929 tmpstat = (tmpstat & 0xffff00ff) |
930 (bsd_to_linux_signal(WSTOPSIG(tmpstat)) << 8);
931 #if defined(__amd64__) && !defined(COMPAT_LINUX32)
932 if (WSTOPSIG(status) == SIGTRAP) {
933 tmpstat = linux_ptrace_status(td,
934 siginfo.si_pid, tmpstat);
937 } else if (WIFCONTINUED(tmpstat)) {
940 error = copyout(&tmpstat, statusp, sizeof(int));
946 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
948 linux_waitpid(struct thread *td, struct linux_waitpid_args *args)
950 struct linux_wait4_args wait4_args;
952 wait4_args.pid = args->pid;
953 wait4_args.status = args->status;
954 wait4_args.options = args->options;
955 wait4_args.rusage = NULL;
957 return (linux_wait4(td, &wait4_args));
959 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
962 linux_wait4(struct thread *td, struct linux_wait4_args *args)
965 struct __wrusage wru, *wrup;
967 if (args->options & ~(LINUX_WUNTRACED | LINUX_WNOHANG |
968 LINUX_WCONTINUED | __WCLONE | __WNOTHREAD | __WALL))
972 linux_to_bsd_waitopts(args->options, &options);
974 if (args->rusage != NULL)
978 error = linux_common_wait(td, args->pid, args->status, options, wrup);
981 if (args->rusage != NULL)
982 error = linux_copyout_rusage(&wru.wru_self, args->rusage);
987 linux_waitid(struct thread *td, struct linux_waitid_args *args)
989 int status, options, sig;
990 struct __wrusage wru;
998 linux_to_bsd_waitopts(args->options, &options);
1000 if (options & ~(WNOHANG | WNOWAIT | WEXITED | WUNTRACED | WCONTINUED))
1002 if (!(options & (WEXITED | WUNTRACED | WCONTINUED)))
1005 switch (args->idtype) {
1023 error = kern_wait6(td, idtype, args->id, &status, options,
1027 if (args->rusage != NULL) {
1028 error = linux_copyout_rusage(&wru.wru_children,
1033 if (args->info != NULL) {
1035 bzero(&lsi, sizeof(lsi));
1036 if (td->td_retval[0] != 0) {
1037 sig = bsd_to_linux_signal(siginfo.si_signo);
1038 siginfo_to_lsiginfo(&siginfo, &lsi, sig);
1040 error = copyout(&lsi, args->info, sizeof(lsi));
1042 td->td_retval[0] = 0;
1047 #ifdef LINUX_LEGACY_SYSCALLS
1049 linux_mknod(struct thread *td, struct linux_mknod_args *args)
1054 LCONVPATHCREAT(td, args->path, &path);
1056 switch (args->mode & S_IFMT) {
1059 error = kern_mkfifoat(td, AT_FDCWD, path, UIO_SYSSPACE,
1065 error = kern_mknodat(td, AT_FDCWD, path, UIO_SYSSPACE,
1066 args->mode, args->dev);
1074 args->mode |= S_IFREG;
1077 error = kern_openat(td, AT_FDCWD, path, UIO_SYSSPACE,
1078 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
1080 kern_close(td, td->td_retval[0]);
1093 linux_mknodat(struct thread *td, struct linux_mknodat_args *args)
1098 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
1099 LCONVPATHCREAT_AT(td, args->filename, &path, dfd);
1101 switch (args->mode & S_IFMT) {
1104 error = kern_mkfifoat(td, dfd, path, UIO_SYSSPACE, args->mode);
1109 error = kern_mknodat(td, dfd, path, UIO_SYSSPACE, args->mode,
1118 args->mode |= S_IFREG;
1121 error = kern_openat(td, dfd, path, UIO_SYSSPACE,
1122 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
1124 kern_close(td, td->td_retval[0]);
1136 * UGH! This is just about the dumbest idea I've ever heard!!
1139 linux_personality(struct thread *td, struct linux_personality_args *args)
1141 struct linux_pemuldata *pem;
1142 struct proc *p = td->td_proc;
1148 if (args->per != 0xffffffff)
1149 pem->persona = args->per;
1152 td->td_retval[0] = old;
1156 struct l_itimerval {
1157 l_timeval it_interval;
1161 #define B2L_ITIMERVAL(bip, lip) \
1162 (bip)->it_interval.tv_sec = (lip)->it_interval.tv_sec; \
1163 (bip)->it_interval.tv_usec = (lip)->it_interval.tv_usec; \
1164 (bip)->it_value.tv_sec = (lip)->it_value.tv_sec; \
1165 (bip)->it_value.tv_usec = (lip)->it_value.tv_usec;
1168 linux_setitimer(struct thread *td, struct linux_setitimer_args *uap)
1171 struct l_itimerval ls;
1172 struct itimerval aitv, oitv;
1174 if (uap->itv == NULL) {
1175 uap->itv = uap->oitv;
1176 return (linux_getitimer(td, (struct linux_getitimer_args *)uap));
1179 error = copyin(uap->itv, &ls, sizeof(ls));
1182 B2L_ITIMERVAL(&aitv, &ls);
1183 error = kern_setitimer(td, uap->which, &aitv, &oitv);
1184 if (error != 0 || uap->oitv == NULL)
1186 B2L_ITIMERVAL(&ls, &oitv);
1188 return (copyout(&ls, uap->oitv, sizeof(ls)));
1192 linux_getitimer(struct thread *td, struct linux_getitimer_args *uap)
1195 struct l_itimerval ls;
1196 struct itimerval aitv;
1198 error = kern_getitimer(td, uap->which, &aitv);
1201 B2L_ITIMERVAL(&ls, &aitv);
1202 return (copyout(&ls, uap->itv, sizeof(ls)));
1205 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1207 linux_nice(struct thread *td, struct linux_nice_args *args)
1209 struct setpriority_args bsd_args;
1211 bsd_args.which = PRIO_PROCESS;
1212 bsd_args.who = 0; /* current process */
1213 bsd_args.prio = args->inc;
1214 return (sys_setpriority(td, &bsd_args));
1216 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1219 linux_setgroups(struct thread *td, struct linux_setgroups_args *args)
1221 struct ucred *newcred, *oldcred;
1222 l_gid_t *linux_gidset;
1227 ngrp = args->gidsetsize;
1228 if (ngrp < 0 || ngrp >= ngroups_max + 1)
1230 linux_gidset = malloc(ngrp * sizeof(*linux_gidset), M_LINUX, M_WAITOK);
1231 error = copyin(args->grouplist, linux_gidset, ngrp * sizeof(l_gid_t));
1235 crextend(newcred, ngrp + 1);
1238 oldcred = p->p_ucred;
1239 crcopy(newcred, oldcred);
1242 * cr_groups[0] holds egid. Setting the whole set from
1243 * the supplied set will cause egid to be changed too.
1244 * Keep cr_groups[0] unchanged to prevent that.
1247 if ((error = priv_check_cred(oldcred, PRIV_CRED_SETGROUPS)) != 0) {
1254 newcred->cr_ngroups = ngrp + 1;
1256 bsd_gidset = newcred->cr_groups;
1259 bsd_gidset[ngrp + 1] = linux_gidset[ngrp];
1263 newcred->cr_ngroups = 1;
1266 proc_set_cred(p, newcred);
1271 free(linux_gidset, M_LINUX);
1276 linux_getgroups(struct thread *td, struct linux_getgroups_args *args)
1279 l_gid_t *linux_gidset;
1281 int bsd_gidsetsz, ngrp, error;
1283 cred = td->td_ucred;
1284 bsd_gidset = cred->cr_groups;
1285 bsd_gidsetsz = cred->cr_ngroups - 1;
1288 * cr_groups[0] holds egid. Returning the whole set
1289 * here will cause a duplicate. Exclude cr_groups[0]
1293 if ((ngrp = args->gidsetsize) == 0) {
1294 td->td_retval[0] = bsd_gidsetsz;
1298 if (ngrp < bsd_gidsetsz)
1302 linux_gidset = malloc(bsd_gidsetsz * sizeof(*linux_gidset),
1304 while (ngrp < bsd_gidsetsz) {
1305 linux_gidset[ngrp] = bsd_gidset[ngrp + 1];
1309 error = copyout(linux_gidset, args->grouplist, ngrp * sizeof(l_gid_t));
1310 free(linux_gidset, M_LINUX);
1314 td->td_retval[0] = ngrp;
1319 linux_setrlimit(struct thread *td, struct linux_setrlimit_args *args)
1321 struct rlimit bsd_rlim;
1322 struct l_rlimit rlim;
1326 if (args->resource >= LINUX_RLIM_NLIMITS)
1329 which = linux_to_bsd_resource[args->resource];
1333 error = copyin(args->rlim, &rlim, sizeof(rlim));
1337 bsd_rlim.rlim_cur = (rlim_t)rlim.rlim_cur;
1338 bsd_rlim.rlim_max = (rlim_t)rlim.rlim_max;
1339 return (kern_setrlimit(td, which, &bsd_rlim));
1342 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1344 linux_old_getrlimit(struct thread *td, struct linux_old_getrlimit_args *args)
1346 struct l_rlimit rlim;
1347 struct rlimit bsd_rlim;
1350 if (args->resource >= LINUX_RLIM_NLIMITS)
1353 which = linux_to_bsd_resource[args->resource];
1357 lim_rlimit(td, which, &bsd_rlim);
1359 #ifdef COMPAT_LINUX32
1360 rlim.rlim_cur = (unsigned int)bsd_rlim.rlim_cur;
1361 if (rlim.rlim_cur == UINT_MAX)
1362 rlim.rlim_cur = INT_MAX;
1363 rlim.rlim_max = (unsigned int)bsd_rlim.rlim_max;
1364 if (rlim.rlim_max == UINT_MAX)
1365 rlim.rlim_max = INT_MAX;
1367 rlim.rlim_cur = (unsigned long)bsd_rlim.rlim_cur;
1368 if (rlim.rlim_cur == ULONG_MAX)
1369 rlim.rlim_cur = LONG_MAX;
1370 rlim.rlim_max = (unsigned long)bsd_rlim.rlim_max;
1371 if (rlim.rlim_max == ULONG_MAX)
1372 rlim.rlim_max = LONG_MAX;
1374 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1376 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1379 linux_getrlimit(struct thread *td, struct linux_getrlimit_args *args)
1381 struct l_rlimit rlim;
1382 struct rlimit bsd_rlim;
1385 if (args->resource >= LINUX_RLIM_NLIMITS)
1388 which = linux_to_bsd_resource[args->resource];
1392 lim_rlimit(td, which, &bsd_rlim);
1394 rlim.rlim_cur = (l_ulong)bsd_rlim.rlim_cur;
1395 rlim.rlim_max = (l_ulong)bsd_rlim.rlim_max;
1396 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1400 linux_sched_setscheduler(struct thread *td,
1401 struct linux_sched_setscheduler_args *args)
1403 struct sched_param sched_param;
1407 switch (args->policy) {
1408 case LINUX_SCHED_OTHER:
1409 policy = SCHED_OTHER;
1411 case LINUX_SCHED_FIFO:
1412 policy = SCHED_FIFO;
1414 case LINUX_SCHED_RR:
1421 error = copyin(args->param, &sched_param, sizeof(sched_param));
1425 tdt = linux_tdfind(td, args->pid, -1);
1429 error = kern_sched_setscheduler(td, tdt, policy, &sched_param);
1430 PROC_UNLOCK(tdt->td_proc);
1435 linux_sched_getscheduler(struct thread *td,
1436 struct linux_sched_getscheduler_args *args)
1441 tdt = linux_tdfind(td, args->pid, -1);
1445 error = kern_sched_getscheduler(td, tdt, &policy);
1446 PROC_UNLOCK(tdt->td_proc);
1450 td->td_retval[0] = LINUX_SCHED_OTHER;
1453 td->td_retval[0] = LINUX_SCHED_FIFO;
1456 td->td_retval[0] = LINUX_SCHED_RR;
1463 linux_sched_get_priority_max(struct thread *td,
1464 struct linux_sched_get_priority_max_args *args)
1466 struct sched_get_priority_max_args bsd;
1468 switch (args->policy) {
1469 case LINUX_SCHED_OTHER:
1470 bsd.policy = SCHED_OTHER;
1472 case LINUX_SCHED_FIFO:
1473 bsd.policy = SCHED_FIFO;
1475 case LINUX_SCHED_RR:
1476 bsd.policy = SCHED_RR;
1481 return (sys_sched_get_priority_max(td, &bsd));
1485 linux_sched_get_priority_min(struct thread *td,
1486 struct linux_sched_get_priority_min_args *args)
1488 struct sched_get_priority_min_args bsd;
1490 switch (args->policy) {
1491 case LINUX_SCHED_OTHER:
1492 bsd.policy = SCHED_OTHER;
1494 case LINUX_SCHED_FIFO:
1495 bsd.policy = SCHED_FIFO;
1497 case LINUX_SCHED_RR:
1498 bsd.policy = SCHED_RR;
1503 return (sys_sched_get_priority_min(td, &bsd));
1506 #define REBOOT_CAD_ON 0x89abcdef
1507 #define REBOOT_CAD_OFF 0
1508 #define REBOOT_HALT 0xcdef0123
1509 #define REBOOT_RESTART 0x01234567
1510 #define REBOOT_RESTART2 0xA1B2C3D4
1511 #define REBOOT_POWEROFF 0x4321FEDC
1512 #define REBOOT_MAGIC1 0xfee1dead
1513 #define REBOOT_MAGIC2 0x28121969
1514 #define REBOOT_MAGIC2A 0x05121996
1515 #define REBOOT_MAGIC2B 0x16041998
1518 linux_reboot(struct thread *td, struct linux_reboot_args *args)
1520 struct reboot_args bsd_args;
1522 if (args->magic1 != REBOOT_MAGIC1)
1525 switch (args->magic2) {
1527 case REBOOT_MAGIC2A:
1528 case REBOOT_MAGIC2B:
1534 switch (args->cmd) {
1536 case REBOOT_CAD_OFF:
1537 return (priv_check(td, PRIV_REBOOT));
1539 bsd_args.opt = RB_HALT;
1541 case REBOOT_RESTART:
1542 case REBOOT_RESTART2:
1545 case REBOOT_POWEROFF:
1546 bsd_args.opt = RB_POWEROFF;
1551 return (sys_reboot(td, &bsd_args));
1556 linux_getpid(struct thread *td, struct linux_getpid_args *args)
1559 td->td_retval[0] = td->td_proc->p_pid;
1565 linux_gettid(struct thread *td, struct linux_gettid_args *args)
1567 struct linux_emuldata *em;
1570 KASSERT(em != NULL, ("gettid: emuldata not found.\n"));
1572 td->td_retval[0] = em->em_tid;
1579 linux_getppid(struct thread *td, struct linux_getppid_args *args)
1582 td->td_retval[0] = kern_getppid(td);
1587 linux_getgid(struct thread *td, struct linux_getgid_args *args)
1590 td->td_retval[0] = td->td_ucred->cr_rgid;
1595 linux_getuid(struct thread *td, struct linux_getuid_args *args)
1598 td->td_retval[0] = td->td_ucred->cr_ruid;
1604 linux_getsid(struct thread *td, struct linux_getsid_args *args)
1606 struct getsid_args bsd;
1608 bsd.pid = args->pid;
1609 return (sys_getsid(td, &bsd));
1613 linux_nosys(struct thread *td, struct nosys_args *ignore)
1620 linux_getpriority(struct thread *td, struct linux_getpriority_args *args)
1622 struct getpriority_args bsd_args;
1625 bsd_args.which = args->which;
1626 bsd_args.who = args->who;
1627 error = sys_getpriority(td, &bsd_args);
1628 td->td_retval[0] = 20 - td->td_retval[0];
1633 linux_sethostname(struct thread *td, struct linux_sethostname_args *args)
1638 name[1] = KERN_HOSTNAME;
1639 return (userland_sysctl(td, name, 2, 0, 0, 0, args->hostname,
1644 linux_setdomainname(struct thread *td, struct linux_setdomainname_args *args)
1649 name[1] = KERN_NISDOMAINNAME;
1650 return (userland_sysctl(td, name, 2, 0, 0, 0, args->name,
1655 linux_exit_group(struct thread *td, struct linux_exit_group_args *args)
1658 LINUX_CTR2(exit_group, "thread(%d) (%d)", td->td_tid,
1662 * XXX: we should send a signal to the parent if
1663 * SIGNAL_EXIT_GROUP is set. We ignore that (temporarily?)
1664 * as it doesnt occur often.
1666 exit1(td, args->error_code, 0);
1670 #define _LINUX_CAPABILITY_VERSION_1 0x19980330
1671 #define _LINUX_CAPABILITY_VERSION_2 0x20071026
1672 #define _LINUX_CAPABILITY_VERSION_3 0x20080522
1674 struct l_user_cap_header {
1679 struct l_user_cap_data {
1686 linux_capget(struct thread *td, struct linux_capget_args *uap)
1688 struct l_user_cap_header luch;
1689 struct l_user_cap_data lucd[2];
1692 if (uap->hdrp == NULL)
1695 error = copyin(uap->hdrp, &luch, sizeof(luch));
1699 switch (luch.version) {
1700 case _LINUX_CAPABILITY_VERSION_1:
1703 case _LINUX_CAPABILITY_VERSION_2:
1704 case _LINUX_CAPABILITY_VERSION_3:
1708 luch.version = _LINUX_CAPABILITY_VERSION_1;
1709 error = copyout(&luch, uap->hdrp, sizeof(luch));
1720 * The current implementation doesn't support setting
1721 * a capability (it's essentially a stub) so indicate
1722 * that no capabilities are currently set or available
1725 memset(&lucd, 0, u32s * sizeof(lucd[0]));
1726 error = copyout(&lucd, uap->datap, u32s * sizeof(lucd[0]));
1733 linux_capset(struct thread *td, struct linux_capset_args *uap)
1735 struct l_user_cap_header luch;
1736 struct l_user_cap_data lucd[2];
1739 if (uap->hdrp == NULL || uap->datap == NULL)
1742 error = copyin(uap->hdrp, &luch, sizeof(luch));
1746 switch (luch.version) {
1747 case _LINUX_CAPABILITY_VERSION_1:
1750 case _LINUX_CAPABILITY_VERSION_2:
1751 case _LINUX_CAPABILITY_VERSION_3:
1755 luch.version = _LINUX_CAPABILITY_VERSION_1;
1756 error = copyout(&luch, uap->hdrp, sizeof(luch));
1765 error = copyin(uap->datap, &lucd, u32s * sizeof(lucd[0]));
1769 /* We currently don't support setting any capabilities. */
1770 for (i = 0; i < u32s; i++) {
1771 if (lucd[i].effective || lucd[i].permitted ||
1772 lucd[i].inheritable) {
1774 "capset[%d] effective=0x%x, permitted=0x%x, "
1775 "inheritable=0x%x is not implemented", i,
1776 (int)lucd[i].effective, (int)lucd[i].permitted,
1777 (int)lucd[i].inheritable);
1786 linux_prctl(struct thread *td, struct linux_prctl_args *args)
1788 int error = 0, max_size;
1789 struct proc *p = td->td_proc;
1790 char comm[LINUX_MAX_COMM_LEN];
1793 switch (args->option) {
1794 case LINUX_PR_SET_PDEATHSIG:
1795 if (!LINUX_SIG_VALID(args->arg2))
1797 pdeath_signal = linux_to_bsd_signal(args->arg2);
1798 return (kern_procctl(td, P_PID, 0, PROC_PDEATHSIG_CTL,
1800 case LINUX_PR_GET_PDEATHSIG:
1801 error = kern_procctl(td, P_PID, 0, PROC_PDEATHSIG_STATUS,
1805 pdeath_signal = bsd_to_linux_signal(pdeath_signal);
1806 return (copyout(&pdeath_signal,
1807 (void *)(register_t)args->arg2,
1808 sizeof(pdeath_signal)));
1810 case LINUX_PR_GET_KEEPCAPS:
1812 * Indicate that we always clear the effective and
1813 * permitted capability sets when the user id becomes
1814 * non-zero (actually the capability sets are simply
1815 * always zero in the current implementation).
1817 td->td_retval[0] = 0;
1819 case LINUX_PR_SET_KEEPCAPS:
1821 * Ignore requests to keep the effective and permitted
1822 * capability sets when the user id becomes non-zero.
1825 case LINUX_PR_SET_NAME:
1827 * To be on the safe side we need to make sure to not
1828 * overflow the size a Linux program expects. We already
1829 * do this here in the copyin, so that we don't need to
1832 max_size = MIN(sizeof(comm), sizeof(p->p_comm));
1833 error = copyinstr((void *)(register_t)args->arg2, comm,
1836 /* Linux silently truncates the name if it is too long. */
1837 if (error == ENAMETOOLONG) {
1839 * XXX: copyinstr() isn't documented to populate the
1840 * array completely, so do a copyin() to be on the
1841 * safe side. This should be changed in case
1842 * copyinstr() is changed to guarantee this.
1844 error = copyin((void *)(register_t)args->arg2, comm,
1846 comm[max_size - 1] = '\0';
1852 strlcpy(p->p_comm, comm, sizeof(p->p_comm));
1855 case LINUX_PR_GET_NAME:
1857 strlcpy(comm, p->p_comm, sizeof(comm));
1859 error = copyout(comm, (void *)(register_t)args->arg2,
1871 linux_sched_setparam(struct thread *td,
1872 struct linux_sched_setparam_args *uap)
1874 struct sched_param sched_param;
1878 error = copyin(uap->param, &sched_param, sizeof(sched_param));
1882 tdt = linux_tdfind(td, uap->pid, -1);
1886 error = kern_sched_setparam(td, tdt, &sched_param);
1887 PROC_UNLOCK(tdt->td_proc);
1892 linux_sched_getparam(struct thread *td,
1893 struct linux_sched_getparam_args *uap)
1895 struct sched_param sched_param;
1899 tdt = linux_tdfind(td, uap->pid, -1);
1903 error = kern_sched_getparam(td, tdt, &sched_param);
1904 PROC_UNLOCK(tdt->td_proc);
1906 error = copyout(&sched_param, uap->param,
1907 sizeof(sched_param));
1912 * Get affinity of a process.
1915 linux_sched_getaffinity(struct thread *td,
1916 struct linux_sched_getaffinity_args *args)
1921 if (args->len < sizeof(cpuset_t))
1924 tdt = linux_tdfind(td, args->pid, -1);
1928 PROC_UNLOCK(tdt->td_proc);
1930 error = kern_cpuset_getaffinity(td, CPU_LEVEL_WHICH, CPU_WHICH_TID,
1931 tdt->td_tid, sizeof(cpuset_t), (cpuset_t *)args->user_mask_ptr);
1933 td->td_retval[0] = sizeof(cpuset_t);
1939 * Set affinity of a process.
1942 linux_sched_setaffinity(struct thread *td,
1943 struct linux_sched_setaffinity_args *args)
1947 if (args->len < sizeof(cpuset_t))
1950 tdt = linux_tdfind(td, args->pid, -1);
1954 PROC_UNLOCK(tdt->td_proc);
1956 return (kern_cpuset_setaffinity(td, CPU_LEVEL_WHICH, CPU_WHICH_TID,
1957 tdt->td_tid, sizeof(cpuset_t), (cpuset_t *) args->user_mask_ptr));
1960 struct linux_rlimit64 {
1966 linux_prlimit64(struct thread *td, struct linux_prlimit64_args *args)
1968 struct rlimit rlim, nrlim;
1969 struct linux_rlimit64 lrlim;
1975 if (args->resource >= LINUX_RLIM_NLIMITS)
1978 which = linux_to_bsd_resource[args->resource];
1982 if (args->new != NULL) {
1984 * Note. Unlike FreeBSD where rlim is signed 64-bit Linux
1985 * rlim is unsigned 64-bit. FreeBSD treats negative limits
1986 * as INFINITY so we do not need a conversion even.
1988 error = copyin(args->new, &nrlim, sizeof(nrlim));
1993 flags = PGET_HOLD | PGET_NOTWEXIT;
1994 if (args->new != NULL)
1995 flags |= PGET_CANDEBUG;
1997 flags |= PGET_CANSEE;
1998 if (args->pid == 0) {
2002 error = pget(args->pid, flags, &p);
2006 if (args->old != NULL) {
2008 lim_rlimit_proc(p, which, &rlim);
2010 if (rlim.rlim_cur == RLIM_INFINITY)
2011 lrlim.rlim_cur = LINUX_RLIM_INFINITY;
2013 lrlim.rlim_cur = rlim.rlim_cur;
2014 if (rlim.rlim_max == RLIM_INFINITY)
2015 lrlim.rlim_max = LINUX_RLIM_INFINITY;
2017 lrlim.rlim_max = rlim.rlim_max;
2018 error = copyout(&lrlim, args->old, sizeof(lrlim));
2023 if (args->new != NULL)
2024 error = kern_proc_setrlimit(td, p, which, &nrlim);
2032 linux_pselect6(struct thread *td, struct linux_pselect6_args *args)
2034 struct timeval utv, tv0, tv1, *tvp;
2035 struct l_pselect6arg lpse6;
2036 struct l_timespec lts;
2037 struct timespec uts;
2044 if (args->sig != NULL) {
2045 error = copyin(args->sig, &lpse6, sizeof(lpse6));
2048 if (lpse6.ss_len != sizeof(l_ss))
2050 if (lpse6.ss != 0) {
2051 error = copyin(PTRIN(lpse6.ss), &l_ss,
2055 linux_to_bsd_sigset(&l_ss, &ss);
2061 * Currently glibc changes nanosecond number to microsecond.
2062 * This mean losing precision but for now it is hardly seen.
2064 if (args->tsp != NULL) {
2065 error = copyin(args->tsp, <s, sizeof(lts));
2068 error = linux_to_native_timespec(&uts, <s);
2072 TIMESPEC_TO_TIMEVAL(&utv, &uts);
2073 if (itimerfix(&utv))
2081 error = kern_pselect(td, args->nfds, args->readfds, args->writefds,
2082 args->exceptfds, tvp, ssp, LINUX_NFDBITS);
2084 if (error == 0 && args->tsp != NULL) {
2085 if (td->td_retval[0] != 0) {
2087 * Compute how much time was left of the timeout,
2088 * by subtracting the current time and the time
2089 * before we started the call, and subtracting
2090 * that result from the user-supplied value.
2094 timevalsub(&tv1, &tv0);
2095 timevalsub(&utv, &tv1);
2101 TIMEVAL_TO_TIMESPEC(&utv, &uts);
2103 error = native_to_linux_timespec(<s, &uts);
2105 error = copyout(<s, args->tsp, sizeof(lts));
2112 linux_ppoll(struct thread *td, struct linux_ppoll_args *args)
2114 struct timespec ts0, ts1;
2115 struct l_timespec lts;
2116 struct timespec uts, *tsp;
2122 if (args->sset != NULL) {
2123 if (args->ssize != sizeof(l_ss))
2125 error = copyin(args->sset, &l_ss, sizeof(l_ss));
2128 linux_to_bsd_sigset(&l_ss, &ss);
2132 if (args->tsp != NULL) {
2133 error = copyin(args->tsp, <s, sizeof(lts));
2136 error = linux_to_native_timespec(&uts, <s);
2145 error = kern_poll(td, args->fds, args->nfds, tsp, ssp);
2147 if (error == 0 && args->tsp != NULL) {
2148 if (td->td_retval[0]) {
2150 timespecsub(&ts1, &ts0, &ts1);
2151 timespecsub(&uts, &ts1, &uts);
2153 timespecclear(&uts);
2155 timespecclear(&uts);
2157 error = native_to_linux_timespec(<s, &uts);
2159 error = copyout(<s, args->tsp, sizeof(lts));
2166 linux_sched_rr_get_interval(struct thread *td,
2167 struct linux_sched_rr_get_interval_args *uap)
2170 struct l_timespec lts;
2175 * According to man in case the invalid pid specified
2176 * EINVAL should be returned.
2181 tdt = linux_tdfind(td, uap->pid, -1);
2185 error = kern_sched_rr_get_interval_td(td, tdt, &ts);
2186 PROC_UNLOCK(tdt->td_proc);
2189 error = native_to_linux_timespec(<s, &ts);
2192 return (copyout(<s, uap->interval, sizeof(lts)));
2196 * In case when the Linux thread is the initial thread in
2197 * the thread group thread id is equal to the process id.
2198 * Glibc depends on this magic (assert in pthread_getattr_np.c).
2201 linux_tdfind(struct thread *td, lwpid_t tid, pid_t pid)
2203 struct linux_emuldata *em;
2208 if (tid == 0 || tid == td->td_tid) {
2210 PROC_LOCK(tdt->td_proc);
2211 } else if (tid > PID_MAX)
2212 tdt = tdfind(tid, pid);
2215 * Initial thread where the tid equal to the pid.
2219 if (SV_PROC_ABI(p) != SV_ABI_LINUX) {
2221 * p is not a Linuxulator process.
2226 FOREACH_THREAD_IN_PROC(p, tdt) {
2228 if (tid == em->em_tid)
2240 linux_to_bsd_waitopts(int options, int *bsdopts)
2243 if (options & LINUX_WNOHANG)
2244 *bsdopts |= WNOHANG;
2245 if (options & LINUX_WUNTRACED)
2246 *bsdopts |= WUNTRACED;
2247 if (options & LINUX_WEXITED)
2248 *bsdopts |= WEXITED;
2249 if (options & LINUX_WCONTINUED)
2250 *bsdopts |= WCONTINUED;
2251 if (options & LINUX_WNOWAIT)
2252 *bsdopts |= WNOWAIT;
2254 if (options & __WCLONE)
2255 *bsdopts |= WLINUXCLONE;
2259 linux_getrandom(struct thread *td, struct linux_getrandom_args *args)
2265 if (args->flags & ~(LINUX_GRND_NONBLOCK|LINUX_GRND_RANDOM))
2267 if (args->count > INT_MAX)
2268 args->count = INT_MAX;
2270 iov.iov_base = args->buf;
2271 iov.iov_len = args->count;
2275 uio.uio_resid = iov.iov_len;
2276 uio.uio_segflg = UIO_USERSPACE;
2277 uio.uio_rw = UIO_READ;
2280 error = read_random_uio(&uio, args->flags & LINUX_GRND_NONBLOCK);
2282 td->td_retval[0] = args->count - uio.uio_resid;
2287 linux_mincore(struct thread *td, struct linux_mincore_args *args)
2290 /* Needs to be page-aligned */
2291 if (args->start & PAGE_MASK)
2293 return (kern_mincore(td, args->start, args->len, args->vec));