1086 lines
26 KiB
C
1086 lines
26 KiB
C
/*-
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* Copyright (c) 2004 Tim J. Robbins
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* Copyright (c) 2002 Doug Rabson
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* Copyright (c) 2000 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/file.h>
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#include <sys/fcntl.h>
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#include <sys/clock.h>
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#include <sys/imgact.h>
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#include <sys/limits.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mman.h>
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#include <sys/mutex.h>
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#include <sys/priv.h>
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#include <sys/proc.h>
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#include <sys/resource.h>
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#include <sys/resourcevar.h>
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#include <sys/sched.h>
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#include <sys/syscallsubr.h>
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#include <sys/sysproto.h>
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#include <sys/unistd.h>
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#include <sys/wait.h>
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#include <machine/frame.h>
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#include <machine/pcb.h>
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#include <machine/psl.h>
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#include <machine/segments.h>
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#include <machine/specialreg.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <vm/vm_map.h>
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#include <compat/freebsd32/freebsd32_util.h>
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#include <amd64/linux32/linux.h>
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#include <amd64/linux32/linux32_proto.h>
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#include <compat/linux/linux_ipc.h>
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#include <compat/linux/linux_misc.h>
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#include <compat/linux/linux_signal.h>
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#include <compat/linux/linux_util.h>
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#include <compat/linux/linux_emul.h>
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struct l_old_select_argv {
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l_int nfds;
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l_uintptr_t readfds;
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l_uintptr_t writefds;
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l_uintptr_t exceptfds;
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l_uintptr_t timeout;
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} __packed;
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int
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linux_to_bsd_sigaltstack(int lsa)
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{
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int bsa = 0;
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if (lsa & LINUX_SS_DISABLE)
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bsa |= SS_DISABLE;
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if (lsa & LINUX_SS_ONSTACK)
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bsa |= SS_ONSTACK;
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return (bsa);
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}
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static int linux_mmap_common(struct thread *td, l_uintptr_t addr,
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l_size_t len, l_int prot, l_int flags, l_int fd,
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l_loff_t pos);
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int
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bsd_to_linux_sigaltstack(int bsa)
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{
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int lsa = 0;
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if (bsa & SS_DISABLE)
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lsa |= LINUX_SS_DISABLE;
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if (bsa & SS_ONSTACK)
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lsa |= LINUX_SS_ONSTACK;
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return (lsa);
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}
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static void
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bsd_to_linux_rusage(struct rusage *ru, struct l_rusage *lru)
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{
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lru->ru_utime.tv_sec = ru->ru_utime.tv_sec;
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lru->ru_utime.tv_usec = ru->ru_utime.tv_usec;
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lru->ru_stime.tv_sec = ru->ru_stime.tv_sec;
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lru->ru_stime.tv_usec = ru->ru_stime.tv_usec;
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lru->ru_maxrss = ru->ru_maxrss;
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lru->ru_ixrss = ru->ru_ixrss;
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lru->ru_idrss = ru->ru_idrss;
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lru->ru_isrss = ru->ru_isrss;
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lru->ru_minflt = ru->ru_minflt;
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lru->ru_majflt = ru->ru_majflt;
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lru->ru_nswap = ru->ru_nswap;
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lru->ru_inblock = ru->ru_inblock;
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lru->ru_oublock = ru->ru_oublock;
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lru->ru_msgsnd = ru->ru_msgsnd;
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lru->ru_msgrcv = ru->ru_msgrcv;
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lru->ru_nsignals = ru->ru_nsignals;
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lru->ru_nvcsw = ru->ru_nvcsw;
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lru->ru_nivcsw = ru->ru_nivcsw;
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}
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int
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linux_execve(struct thread *td, struct linux_execve_args *args)
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{
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struct image_args eargs;
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char *path;
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int error;
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LCONVPATHEXIST(td, args->path, &path);
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#ifdef DEBUG
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if (ldebug(execve))
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printf(ARGS(execve, "%s"), path);
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#endif
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error = freebsd32_exec_copyin_args(&eargs, path, UIO_SYSSPACE,
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args->argp, args->envp);
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free(path, M_TEMP);
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if (error == 0)
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error = kern_execve(td, &eargs, NULL);
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if (error == 0)
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/* Linux process can execute FreeBSD one, do not attempt
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* to create emuldata for such process using
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* linux_proc_init, this leads to a panic on KASSERT
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* because such process has p->p_emuldata == NULL.
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*/
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if (SV_PROC_ABI(td->td_proc) == SV_ABI_LINUX)
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error = linux_proc_init(td, 0, 0);
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return (error);
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}
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CTASSERT(sizeof(struct l_iovec32) == 8);
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static int
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linux32_copyinuio(struct l_iovec32 *iovp, l_ulong iovcnt, struct uio **uiop)
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{
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struct l_iovec32 iov32;
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struct iovec *iov;
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struct uio *uio;
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uint32_t iovlen;
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int error, i;
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*uiop = NULL;
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if (iovcnt > UIO_MAXIOV)
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return (EINVAL);
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iovlen = iovcnt * sizeof(struct iovec);
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uio = malloc(iovlen + sizeof(*uio), M_IOV, M_WAITOK);
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iov = (struct iovec *)(uio + 1);
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for (i = 0; i < iovcnt; i++) {
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error = copyin(&iovp[i], &iov32, sizeof(struct l_iovec32));
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if (error) {
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free(uio, M_IOV);
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return (error);
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}
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iov[i].iov_base = PTRIN(iov32.iov_base);
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iov[i].iov_len = iov32.iov_len;
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}
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uio->uio_iov = iov;
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uio->uio_iovcnt = iovcnt;
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uio->uio_segflg = UIO_USERSPACE;
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uio->uio_offset = -1;
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uio->uio_resid = 0;
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for (i = 0; i < iovcnt; i++) {
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if (iov->iov_len > INT_MAX - uio->uio_resid) {
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free(uio, M_IOV);
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return (EINVAL);
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}
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uio->uio_resid += iov->iov_len;
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iov++;
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}
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*uiop = uio;
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return (0);
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}
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int
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linux32_copyiniov(struct l_iovec32 *iovp32, l_ulong iovcnt, struct iovec **iovp,
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int error)
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{
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struct l_iovec32 iov32;
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struct iovec *iov;
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uint32_t iovlen;
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int i;
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*iovp = NULL;
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if (iovcnt > UIO_MAXIOV)
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return (error);
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iovlen = iovcnt * sizeof(struct iovec);
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iov = malloc(iovlen, M_IOV, M_WAITOK);
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for (i = 0; i < iovcnt; i++) {
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error = copyin(&iovp32[i], &iov32, sizeof(struct l_iovec32));
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if (error) {
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free(iov, M_IOV);
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return (error);
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}
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iov[i].iov_base = PTRIN(iov32.iov_base);
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iov[i].iov_len = iov32.iov_len;
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}
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*iovp = iov;
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return(0);
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}
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int
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linux_readv(struct thread *td, struct linux_readv_args *uap)
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{
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struct uio *auio;
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int error;
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error = linux32_copyinuio(uap->iovp, uap->iovcnt, &auio);
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if (error)
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return (error);
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error = kern_readv(td, uap->fd, auio);
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free(auio, M_IOV);
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return (error);
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}
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int
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linux_writev(struct thread *td, struct linux_writev_args *uap)
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{
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struct uio *auio;
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int error;
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error = linux32_copyinuio(uap->iovp, uap->iovcnt, &auio);
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if (error)
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return (error);
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error = kern_writev(td, uap->fd, auio);
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free(auio, M_IOV);
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return (error);
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}
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struct l_ipc_kludge {
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l_uintptr_t msgp;
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l_long msgtyp;
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} __packed;
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int
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linux_ipc(struct thread *td, struct linux_ipc_args *args)
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{
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switch (args->what & 0xFFFF) {
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case LINUX_SEMOP: {
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struct linux_semop_args a;
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a.semid = args->arg1;
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a.tsops = args->ptr;
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a.nsops = args->arg2;
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return (linux_semop(td, &a));
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}
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case LINUX_SEMGET: {
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struct linux_semget_args a;
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a.key = args->arg1;
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a.nsems = args->arg2;
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a.semflg = args->arg3;
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return (linux_semget(td, &a));
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}
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case LINUX_SEMCTL: {
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struct linux_semctl_args a;
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int error;
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a.semid = args->arg1;
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a.semnum = args->arg2;
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a.cmd = args->arg3;
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error = copyin(args->ptr, &a.arg, sizeof(a.arg));
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if (error)
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return (error);
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return (linux_semctl(td, &a));
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}
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case LINUX_MSGSND: {
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struct linux_msgsnd_args a;
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a.msqid = args->arg1;
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a.msgp = args->ptr;
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a.msgsz = args->arg2;
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a.msgflg = args->arg3;
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return (linux_msgsnd(td, &a));
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}
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case LINUX_MSGRCV: {
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struct linux_msgrcv_args a;
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a.msqid = args->arg1;
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a.msgsz = args->arg2;
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a.msgflg = args->arg3;
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if ((args->what >> 16) == 0) {
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struct l_ipc_kludge tmp;
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int error;
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if (args->ptr == 0)
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return (EINVAL);
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error = copyin(args->ptr, &tmp, sizeof(tmp));
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if (error)
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return (error);
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a.msgp = PTRIN(tmp.msgp);
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a.msgtyp = tmp.msgtyp;
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} else {
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a.msgp = args->ptr;
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a.msgtyp = args->arg5;
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}
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return (linux_msgrcv(td, &a));
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}
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case LINUX_MSGGET: {
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struct linux_msgget_args a;
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a.key = args->arg1;
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a.msgflg = args->arg2;
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return (linux_msgget(td, &a));
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}
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case LINUX_MSGCTL: {
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struct linux_msgctl_args a;
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a.msqid = args->arg1;
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a.cmd = args->arg2;
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a.buf = args->ptr;
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return (linux_msgctl(td, &a));
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}
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case LINUX_SHMAT: {
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struct linux_shmat_args a;
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a.shmid = args->arg1;
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a.shmaddr = args->ptr;
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a.shmflg = args->arg2;
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a.raddr = PTRIN((l_uint)args->arg3);
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return (linux_shmat(td, &a));
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}
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case LINUX_SHMDT: {
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struct linux_shmdt_args a;
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a.shmaddr = args->ptr;
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return (linux_shmdt(td, &a));
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}
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case LINUX_SHMGET: {
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struct linux_shmget_args a;
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a.key = args->arg1;
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a.size = args->arg2;
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a.shmflg = args->arg3;
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return (linux_shmget(td, &a));
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}
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case LINUX_SHMCTL: {
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struct linux_shmctl_args a;
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a.shmid = args->arg1;
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a.cmd = args->arg2;
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a.buf = args->ptr;
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return (linux_shmctl(td, &a));
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}
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default:
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break;
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}
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return (EINVAL);
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}
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int
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linux_old_select(struct thread *td, struct linux_old_select_args *args)
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{
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struct l_old_select_argv linux_args;
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struct linux_select_args newsel;
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int error;
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#ifdef DEBUG
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if (ldebug(old_select))
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printf(ARGS(old_select, "%p"), args->ptr);
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#endif
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error = copyin(args->ptr, &linux_args, sizeof(linux_args));
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if (error)
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return (error);
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newsel.nfds = linux_args.nfds;
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newsel.readfds = PTRIN(linux_args.readfds);
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newsel.writefds = PTRIN(linux_args.writefds);
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newsel.exceptfds = PTRIN(linux_args.exceptfds);
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newsel.timeout = PTRIN(linux_args.timeout);
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return (linux_select(td, &newsel));
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}
|
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|
|
int
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linux_set_cloned_tls(struct thread *td, void *desc)
|
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{
|
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struct user_segment_descriptor sd;
|
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struct l_user_desc info;
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struct pcb *pcb;
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int error;
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int a[2];
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error = copyin(desc, &info, sizeof(struct l_user_desc));
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if (error) {
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printf(LMSG("copyin failed!"));
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} else {
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/* We might copy out the entry_number as GUGS32_SEL. */
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info.entry_number = GUGS32_SEL;
|
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error = copyout(&info, desc, sizeof(struct l_user_desc));
|
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if (error)
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printf(LMSG("copyout failed!"));
|
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|
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a[0] = LINUX_LDT_entry_a(&info);
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a[1] = LINUX_LDT_entry_b(&info);
|
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|
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memcpy(&sd, &a, sizeof(a));
|
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#ifdef DEBUG
|
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if (ldebug(clone))
|
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printf("Segment created in clone with "
|
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"CLONE_SETTLS: lobase: %x, hibase: %x, "
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"lolimit: %x, hilimit: %x, type: %i, "
|
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"dpl: %i, p: %i, xx: %i, long: %i, "
|
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"def32: %i, gran: %i\n", sd.sd_lobase,
|
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sd.sd_hibase, sd.sd_lolimit, sd.sd_hilimit,
|
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sd.sd_type, sd.sd_dpl, sd.sd_p, sd.sd_xx,
|
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sd.sd_long, sd.sd_def32, sd.sd_gran);
|
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#endif
|
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pcb = td->td_pcb;
|
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pcb->pcb_gsbase = (register_t)info.base_addr;
|
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/* XXXKIB pcb->pcb_gs32sd = sd; */
|
|
td->td_frame->tf_gs = GSEL(GUGS32_SEL, SEL_UPL);
|
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set_pcb_flags(pcb, PCB_GS32BIT | PCB_32BIT);
|
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}
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
linux_set_upcall_kse(struct thread *td, register_t stack)
|
|
{
|
|
|
|
td->td_frame->tf_rsp = stack;
|
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|
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return (0);
|
|
}
|
|
|
|
#define STACK_SIZE (2 * 1024 * 1024)
|
|
#define GUARD_SIZE (4 * PAGE_SIZE)
|
|
|
|
int
|
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linux_mmap2(struct thread *td, struct linux_mmap2_args *args)
|
|
{
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(mmap2))
|
|
printf(ARGS(mmap2, "0x%08x, %d, %d, 0x%08x, %d, %d"),
|
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args->addr, args->len, args->prot,
|
|
args->flags, args->fd, args->pgoff);
|
|
#endif
|
|
|
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return (linux_mmap_common(td, PTROUT(args->addr), args->len, args->prot,
|
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args->flags, args->fd, (uint64_t)(uint32_t)args->pgoff *
|
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PAGE_SIZE));
|
|
}
|
|
|
|
int
|
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linux_mmap(struct thread *td, struct linux_mmap_args *args)
|
|
{
|
|
int error;
|
|
struct l_mmap_argv linux_args;
|
|
|
|
error = copyin(args->ptr, &linux_args, sizeof(linux_args));
|
|
if (error)
|
|
return (error);
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(mmap))
|
|
printf(ARGS(mmap, "0x%08x, %d, %d, 0x%08x, %d, %d"),
|
|
linux_args.addr, linux_args.len, linux_args.prot,
|
|
linux_args.flags, linux_args.fd, linux_args.pgoff);
|
|
#endif
|
|
|
|
return (linux_mmap_common(td, linux_args.addr, linux_args.len,
|
|
linux_args.prot, linux_args.flags, linux_args.fd,
|
|
(uint32_t)linux_args.pgoff));
|
|
}
|
|
|
|
static int
|
|
linux_mmap_common(struct thread *td, l_uintptr_t addr, l_size_t len, l_int prot,
|
|
l_int flags, l_int fd, l_loff_t pos)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
struct mmap_args /* {
|
|
caddr_t addr;
|
|
size_t len;
|
|
int prot;
|
|
int flags;
|
|
int fd;
|
|
long pad;
|
|
off_t pos;
|
|
} */ bsd_args;
|
|
int error;
|
|
struct file *fp;
|
|
|
|
error = 0;
|
|
bsd_args.flags = 0;
|
|
fp = NULL;
|
|
|
|
/*
|
|
* Linux mmap(2):
|
|
* You must specify exactly one of MAP_SHARED and MAP_PRIVATE
|
|
*/
|
|
if (!((flags & LINUX_MAP_SHARED) ^ (flags & LINUX_MAP_PRIVATE)))
|
|
return (EINVAL);
|
|
|
|
if (flags & LINUX_MAP_SHARED)
|
|
bsd_args.flags |= MAP_SHARED;
|
|
if (flags & LINUX_MAP_PRIVATE)
|
|
bsd_args.flags |= MAP_PRIVATE;
|
|
if (flags & LINUX_MAP_FIXED)
|
|
bsd_args.flags |= MAP_FIXED;
|
|
if (flags & LINUX_MAP_ANON) {
|
|
/* Enforce pos to be on page boundary, then ignore. */
|
|
if ((pos & PAGE_MASK) != 0)
|
|
return (EINVAL);
|
|
pos = 0;
|
|
bsd_args.flags |= MAP_ANON;
|
|
} else
|
|
bsd_args.flags |= MAP_NOSYNC;
|
|
if (flags & LINUX_MAP_GROWSDOWN)
|
|
bsd_args.flags |= MAP_STACK;
|
|
|
|
/*
|
|
* PROT_READ, PROT_WRITE, or PROT_EXEC implies PROT_READ and PROT_EXEC
|
|
* on Linux/i386. We do this to ensure maximum compatibility.
|
|
* Linux/ia64 does the same in i386 emulation mode.
|
|
*/
|
|
bsd_args.prot = prot;
|
|
if (bsd_args.prot & (PROT_READ | PROT_WRITE | PROT_EXEC))
|
|
bsd_args.prot |= PROT_READ | PROT_EXEC;
|
|
|
|
/* Linux does not check file descriptor when MAP_ANONYMOUS is set. */
|
|
bsd_args.fd = (bsd_args.flags & MAP_ANON) ? -1 : fd;
|
|
if (bsd_args.fd != -1) {
|
|
/*
|
|
* Linux follows Solaris mmap(2) description:
|
|
* The file descriptor fildes is opened with
|
|
* read permission, regardless of the
|
|
* protection options specified.
|
|
*/
|
|
|
|
if ((error = fget(td, bsd_args.fd, &fp)) != 0)
|
|
return (error);
|
|
if (fp->f_type != DTYPE_VNODE) {
|
|
fdrop(fp, td);
|
|
return (EINVAL);
|
|
}
|
|
|
|
/* Linux mmap() just fails for O_WRONLY files */
|
|
if (!(fp->f_flag & FREAD)) {
|
|
fdrop(fp, td);
|
|
return (EACCES);
|
|
}
|
|
|
|
fdrop(fp, td);
|
|
}
|
|
|
|
if (flags & LINUX_MAP_GROWSDOWN) {
|
|
/*
|
|
* The Linux MAP_GROWSDOWN option does not limit auto
|
|
* growth of the region. Linux mmap with this option
|
|
* takes as addr the inital BOS, and as len, the initial
|
|
* region size. It can then grow down from addr without
|
|
* limit. However, Linux threads has an implicit internal
|
|
* limit to stack size of STACK_SIZE. Its just not
|
|
* enforced explicitly in Linux. But, here we impose
|
|
* a limit of (STACK_SIZE - GUARD_SIZE) on the stack
|
|
* region, since we can do this with our mmap.
|
|
*
|
|
* Our mmap with MAP_STACK takes addr as the maximum
|
|
* downsize limit on BOS, and as len the max size of
|
|
* the region. It then maps the top SGROWSIZ bytes,
|
|
* and auto grows the region down, up to the limit
|
|
* in addr.
|
|
*
|
|
* If we don't use the MAP_STACK option, the effect
|
|
* of this code is to allocate a stack region of a
|
|
* fixed size of (STACK_SIZE - GUARD_SIZE).
|
|
*/
|
|
|
|
if ((caddr_t)PTRIN(addr) + len > p->p_vmspace->vm_maxsaddr) {
|
|
/*
|
|
* Some Linux apps will attempt to mmap
|
|
* thread stacks near the top of their
|
|
* address space. If their TOS is greater
|
|
* than vm_maxsaddr, vm_map_growstack()
|
|
* will confuse the thread stack with the
|
|
* process stack and deliver a SEGV if they
|
|
* attempt to grow the thread stack past their
|
|
* current stacksize rlimit. To avoid this,
|
|
* adjust vm_maxsaddr upwards to reflect
|
|
* the current stacksize rlimit rather
|
|
* than the maximum possible stacksize.
|
|
* It would be better to adjust the
|
|
* mmap'ed region, but some apps do not check
|
|
* mmap's return value.
|
|
*/
|
|
PROC_LOCK(p);
|
|
p->p_vmspace->vm_maxsaddr = (char *)LINUX32_USRSTACK -
|
|
lim_cur(p, RLIMIT_STACK);
|
|
PROC_UNLOCK(p);
|
|
}
|
|
|
|
/*
|
|
* This gives us our maximum stack size and a new BOS.
|
|
* If we're using VM_STACK, then mmap will just map
|
|
* the top SGROWSIZ bytes, and let the stack grow down
|
|
* to the limit at BOS. If we're not using VM_STACK
|
|
* we map the full stack, since we don't have a way
|
|
* to autogrow it.
|
|
*/
|
|
if (len > STACK_SIZE - GUARD_SIZE) {
|
|
bsd_args.addr = (caddr_t)PTRIN(addr);
|
|
bsd_args.len = len;
|
|
} else {
|
|
bsd_args.addr = (caddr_t)PTRIN(addr) -
|
|
(STACK_SIZE - GUARD_SIZE - len);
|
|
bsd_args.len = STACK_SIZE - GUARD_SIZE;
|
|
}
|
|
} else {
|
|
bsd_args.addr = (caddr_t)PTRIN(addr);
|
|
bsd_args.len = len;
|
|
}
|
|
bsd_args.pos = pos;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(mmap))
|
|
printf("-> %s(%p, %d, %d, 0x%08x, %d, 0x%x)\n",
|
|
__func__,
|
|
(void *)bsd_args.addr, (int)bsd_args.len, bsd_args.prot,
|
|
bsd_args.flags, bsd_args.fd, (int)bsd_args.pos);
|
|
#endif
|
|
error = mmap(td, &bsd_args);
|
|
#ifdef DEBUG
|
|
if (ldebug(mmap))
|
|
printf("-> %s() return: 0x%x (0x%08x)\n",
|
|
__func__, error, (u_int)td->td_retval[0]);
|
|
#endif
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
linux_mprotect(struct thread *td, struct linux_mprotect_args *uap)
|
|
{
|
|
struct mprotect_args bsd_args;
|
|
|
|
bsd_args.addr = uap->addr;
|
|
bsd_args.len = uap->len;
|
|
bsd_args.prot = uap->prot;
|
|
if (bsd_args.prot & (PROT_READ | PROT_WRITE | PROT_EXEC))
|
|
bsd_args.prot |= PROT_READ | PROT_EXEC;
|
|
return (mprotect(td, &bsd_args));
|
|
}
|
|
|
|
int
|
|
linux_iopl(struct thread *td, struct linux_iopl_args *args)
|
|
{
|
|
int error;
|
|
|
|
if (args->level < 0 || args->level > 3)
|
|
return (EINVAL);
|
|
if ((error = priv_check(td, PRIV_IO)) != 0)
|
|
return (error);
|
|
if ((error = securelevel_gt(td->td_ucred, 0)) != 0)
|
|
return (error);
|
|
td->td_frame->tf_rflags = (td->td_frame->tf_rflags & ~PSL_IOPL) |
|
|
(args->level * (PSL_IOPL / 3));
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
linux_pipe(struct thread *td, struct linux_pipe_args *args)
|
|
{
|
|
int error;
|
|
int fildes[2];
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(pipe))
|
|
printf(ARGS(pipe, "*"));
|
|
#endif
|
|
|
|
error = kern_pipe(td, fildes);
|
|
if (error)
|
|
return (error);
|
|
|
|
/* XXX: Close descriptors on error. */
|
|
return (copyout(fildes, args->pipefds, sizeof fildes));
|
|
}
|
|
|
|
int
|
|
linux_sigaction(struct thread *td, struct linux_sigaction_args *args)
|
|
{
|
|
l_osigaction_t osa;
|
|
l_sigaction_t act, oact;
|
|
int error;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(sigaction))
|
|
printf(ARGS(sigaction, "%d, %p, %p"),
|
|
args->sig, (void *)args->nsa, (void *)args->osa);
|
|
#endif
|
|
|
|
if (args->nsa != NULL) {
|
|
error = copyin(args->nsa, &osa, sizeof(l_osigaction_t));
|
|
if (error)
|
|
return (error);
|
|
act.lsa_handler = osa.lsa_handler;
|
|
act.lsa_flags = osa.lsa_flags;
|
|
act.lsa_restorer = osa.lsa_restorer;
|
|
LINUX_SIGEMPTYSET(act.lsa_mask);
|
|
act.lsa_mask.__bits[0] = osa.lsa_mask;
|
|
}
|
|
|
|
error = linux_do_sigaction(td, args->sig, args->nsa ? &act : NULL,
|
|
args->osa ? &oact : NULL);
|
|
|
|
if (args->osa != NULL && !error) {
|
|
osa.lsa_handler = oact.lsa_handler;
|
|
osa.lsa_flags = oact.lsa_flags;
|
|
osa.lsa_restorer = oact.lsa_restorer;
|
|
osa.lsa_mask = oact.lsa_mask.__bits[0];
|
|
error = copyout(&osa, args->osa, sizeof(l_osigaction_t));
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Linux has two extra args, restart and oldmask. We don't use these,
|
|
* but it seems that "restart" is actually a context pointer that
|
|
* enables the signal to happen with a different register set.
|
|
*/
|
|
int
|
|
linux_sigsuspend(struct thread *td, struct linux_sigsuspend_args *args)
|
|
{
|
|
sigset_t sigmask;
|
|
l_sigset_t mask;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(sigsuspend))
|
|
printf(ARGS(sigsuspend, "%08lx"), (unsigned long)args->mask);
|
|
#endif
|
|
|
|
LINUX_SIGEMPTYSET(mask);
|
|
mask.__bits[0] = args->mask;
|
|
linux_to_bsd_sigset(&mask, &sigmask);
|
|
return (kern_sigsuspend(td, sigmask));
|
|
}
|
|
|
|
int
|
|
linux_rt_sigsuspend(struct thread *td, struct linux_rt_sigsuspend_args *uap)
|
|
{
|
|
l_sigset_t lmask;
|
|
sigset_t sigmask;
|
|
int error;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(rt_sigsuspend))
|
|
printf(ARGS(rt_sigsuspend, "%p, %d"),
|
|
(void *)uap->newset, uap->sigsetsize);
|
|
#endif
|
|
|
|
if (uap->sigsetsize != sizeof(l_sigset_t))
|
|
return (EINVAL);
|
|
|
|
error = copyin(uap->newset, &lmask, sizeof(l_sigset_t));
|
|
if (error)
|
|
return (error);
|
|
|
|
linux_to_bsd_sigset(&lmask, &sigmask);
|
|
return (kern_sigsuspend(td, sigmask));
|
|
}
|
|
|
|
int
|
|
linux_pause(struct thread *td, struct linux_pause_args *args)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
sigset_t sigmask;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(pause))
|
|
printf(ARGS(pause, ""));
|
|
#endif
|
|
|
|
PROC_LOCK(p);
|
|
sigmask = td->td_sigmask;
|
|
PROC_UNLOCK(p);
|
|
return (kern_sigsuspend(td, sigmask));
|
|
}
|
|
|
|
int
|
|
linux_sigaltstack(struct thread *td, struct linux_sigaltstack_args *uap)
|
|
{
|
|
stack_t ss, oss;
|
|
l_stack_t lss;
|
|
int error;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(sigaltstack))
|
|
printf(ARGS(sigaltstack, "%p, %p"), uap->uss, uap->uoss);
|
|
#endif
|
|
|
|
if (uap->uss != NULL) {
|
|
error = copyin(uap->uss, &lss, sizeof(l_stack_t));
|
|
if (error)
|
|
return (error);
|
|
|
|
ss.ss_sp = PTRIN(lss.ss_sp);
|
|
ss.ss_size = lss.ss_size;
|
|
ss.ss_flags = linux_to_bsd_sigaltstack(lss.ss_flags);
|
|
}
|
|
error = kern_sigaltstack(td, (uap->uss != NULL) ? &ss : NULL,
|
|
(uap->uoss != NULL) ? &oss : NULL);
|
|
if (!error && uap->uoss != NULL) {
|
|
lss.ss_sp = PTROUT(oss.ss_sp);
|
|
lss.ss_size = oss.ss_size;
|
|
lss.ss_flags = bsd_to_linux_sigaltstack(oss.ss_flags);
|
|
error = copyout(&lss, uap->uoss, sizeof(l_stack_t));
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
linux_ftruncate64(struct thread *td, struct linux_ftruncate64_args *args)
|
|
{
|
|
struct ftruncate_args sa;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(ftruncate64))
|
|
printf(ARGS(ftruncate64, "%u, %jd"), args->fd,
|
|
(intmax_t)args->length);
|
|
#endif
|
|
|
|
sa.fd = args->fd;
|
|
sa.length = args->length;
|
|
return ftruncate(td, &sa);
|
|
}
|
|
|
|
int
|
|
linux_gettimeofday(struct thread *td, struct linux_gettimeofday_args *uap)
|
|
{
|
|
struct timeval atv;
|
|
l_timeval atv32;
|
|
struct timezone rtz;
|
|
int error = 0;
|
|
|
|
if (uap->tp) {
|
|
microtime(&atv);
|
|
atv32.tv_sec = atv.tv_sec;
|
|
atv32.tv_usec = atv.tv_usec;
|
|
error = copyout(&atv32, uap->tp, sizeof(atv32));
|
|
}
|
|
if (error == 0 && uap->tzp != NULL) {
|
|
rtz.tz_minuteswest = tz_minuteswest;
|
|
rtz.tz_dsttime = tz_dsttime;
|
|
error = copyout(&rtz, uap->tzp, sizeof(rtz));
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
linux_settimeofday(struct thread *td, struct linux_settimeofday_args *uap)
|
|
{
|
|
l_timeval atv32;
|
|
struct timeval atv, *tvp;
|
|
struct timezone atz, *tzp;
|
|
int error;
|
|
|
|
if (uap->tp) {
|
|
error = copyin(uap->tp, &atv32, sizeof(atv32));
|
|
if (error)
|
|
return (error);
|
|
atv.tv_sec = atv32.tv_sec;
|
|
atv.tv_usec = atv32.tv_usec;
|
|
tvp = &atv;
|
|
} else
|
|
tvp = NULL;
|
|
if (uap->tzp) {
|
|
error = copyin(uap->tzp, &atz, sizeof(atz));
|
|
if (error)
|
|
return (error);
|
|
tzp = &atz;
|
|
} else
|
|
tzp = NULL;
|
|
return (kern_settimeofday(td, tvp, tzp));
|
|
}
|
|
|
|
int
|
|
linux_getrusage(struct thread *td, struct linux_getrusage_args *uap)
|
|
{
|
|
struct l_rusage s32;
|
|
struct rusage s;
|
|
int error;
|
|
|
|
error = kern_getrusage(td, uap->who, &s);
|
|
if (error != 0)
|
|
return (error);
|
|
if (uap->rusage != NULL) {
|
|
bsd_to_linux_rusage(&s, &s32);
|
|
error = copyout(&s32, uap->rusage, sizeof(s32));
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
linux_sched_rr_get_interval(struct thread *td,
|
|
struct linux_sched_rr_get_interval_args *uap)
|
|
{
|
|
struct timespec ts;
|
|
struct l_timespec ts32;
|
|
int error;
|
|
|
|
error = kern_sched_rr_get_interval(td, uap->pid, &ts);
|
|
if (error != 0)
|
|
return (error);
|
|
ts32.tv_sec = ts.tv_sec;
|
|
ts32.tv_nsec = ts.tv_nsec;
|
|
return (copyout(&ts32, uap->interval, sizeof(ts32)));
|
|
}
|
|
|
|
int
|
|
linux_set_thread_area(struct thread *td,
|
|
struct linux_set_thread_area_args *args)
|
|
{
|
|
struct l_user_desc info;
|
|
struct user_segment_descriptor sd;
|
|
struct pcb *pcb;
|
|
int a[2];
|
|
int error;
|
|
|
|
error = copyin(args->desc, &info, sizeof(struct l_user_desc));
|
|
if (error)
|
|
return (error);
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(set_thread_area))
|
|
printf(ARGS(set_thread_area, "%i, %x, %x, %i, %i, %i, "
|
|
"%i, %i, %i"), info.entry_number, info.base_addr,
|
|
info.limit, info.seg_32bit, info.contents,
|
|
info.read_exec_only, info.limit_in_pages,
|
|
info.seg_not_present, info.useable);
|
|
#endif
|
|
|
|
/*
|
|
* Semantics of Linux version: every thread in the system has array
|
|
* of three TLS descriptors. 1st is GLIBC TLS, 2nd is WINE, 3rd unknown.
|
|
* This syscall loads one of the selected TLS decriptors with a value
|
|
* and also loads GDT descriptors 6, 7 and 8 with the content of
|
|
* the per-thread descriptors.
|
|
*
|
|
* Semantics of FreeBSD version: I think we can ignore that Linux has
|
|
* three per-thread descriptors and use just the first one.
|
|
* The tls_array[] is used only in [gs]et_thread_area() syscalls and
|
|
* for loading the GDT descriptors. We use just one GDT descriptor
|
|
* for TLS, so we will load just one.
|
|
*
|
|
* XXX: This doesn't work when a user space process tries to use more
|
|
* than one TLS segment. Comment in the Linux source says wine might
|
|
* do this.
|
|
*/
|
|
|
|
/*
|
|
* GLIBC reads current %gs and call set_thread_area() with it.
|
|
* We should let GUDATA_SEL and GUGS32_SEL proceed as well because
|
|
* we use these segments.
|
|
*/
|
|
switch (info.entry_number) {
|
|
case GUGS32_SEL:
|
|
case GUDATA_SEL:
|
|
case 6:
|
|
case -1:
|
|
info.entry_number = GUGS32_SEL;
|
|
break;
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* We have to copy out the GDT entry we use.
|
|
*
|
|
* XXX: What if a user space program does not check the return value
|
|
* and tries to use 6, 7 or 8?
|
|
*/
|
|
error = copyout(&info, args->desc, sizeof(struct l_user_desc));
|
|
if (error)
|
|
return (error);
|
|
|
|
if (LINUX_LDT_empty(&info)) {
|
|
a[0] = 0;
|
|
a[1] = 0;
|
|
} else {
|
|
a[0] = LINUX_LDT_entry_a(&info);
|
|
a[1] = LINUX_LDT_entry_b(&info);
|
|
}
|
|
|
|
memcpy(&sd, &a, sizeof(a));
|
|
#ifdef DEBUG
|
|
if (ldebug(set_thread_area))
|
|
printf("Segment created in set_thread_area: "
|
|
"lobase: %x, hibase: %x, lolimit: %x, hilimit: %x, "
|
|
"type: %i, dpl: %i, p: %i, xx: %i, long: %i, "
|
|
"def32: %i, gran: %i\n",
|
|
sd.sd_lobase,
|
|
sd.sd_hibase,
|
|
sd.sd_lolimit,
|
|
sd.sd_hilimit,
|
|
sd.sd_type,
|
|
sd.sd_dpl,
|
|
sd.sd_p,
|
|
sd.sd_xx,
|
|
sd.sd_long,
|
|
sd.sd_def32,
|
|
sd.sd_gran);
|
|
#endif
|
|
|
|
pcb = td->td_pcb;
|
|
pcb->pcb_gsbase = (register_t)info.base_addr;
|
|
set_pcb_flags(pcb, PCB_32BIT | PCB_GS32BIT);
|
|
update_gdt_gsbase(td, info.base_addr);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
linux_wait4(struct thread *td, struct linux_wait4_args *args)
|
|
{
|
|
int error, options;
|
|
struct rusage ru, *rup;
|
|
struct l_rusage lru;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(wait4))
|
|
printf(ARGS(wait4, "%d, %p, %d, %p"),
|
|
args->pid, (void *)args->status, args->options,
|
|
(void *)args->rusage);
|
|
#endif
|
|
|
|
options = (args->options & (WNOHANG | WUNTRACED));
|
|
/* WLINUXCLONE should be equal to __WCLONE, but we make sure */
|
|
if (args->options & __WCLONE)
|
|
options |= WLINUXCLONE;
|
|
|
|
if (args->rusage != NULL)
|
|
rup = &ru;
|
|
else
|
|
rup = NULL;
|
|
error = linux_common_wait(td, args->pid, args->status, options, rup);
|
|
if (error)
|
|
return (error);
|
|
if (args->rusage != NULL) {
|
|
bsd_to_linux_rusage(rup, &lru);
|
|
error = copyout(&lru, args->rusage, sizeof(lru));
|
|
}
|
|
|
|
return (error);
|
|
}
|