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-rw-r--r--release/scripts/driver-copy2.pl78
-rw-r--r--release/scripts/driver-remove.pl58
-rw-r--r--sys/alpha/linux/Makefile15
-rw-r--r--sys/alpha/linux/linux_genassym.c13
-rw-r--r--sys/alpha/linux/linux_machdep.c356
-rw-r--r--sys/i386/linux/linux_machdep.c694
6 files changed, 1214 insertions, 0 deletions
diff --git a/release/scripts/driver-copy2.pl b/release/scripts/driver-copy2.pl
new file mode 100644
index 000000000000..541e3e093f32
--- /dev/null
+++ b/release/scripts/driver-copy2.pl
@@ -0,0 +1,78 @@
+#!/usr/bin/perl
+#
+# Copyright (c) 2000 "HOSOKAWA, Tatsumi" <hosokawa@FreeBSD.org>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+if ($#ARGV != 2) {
+ print STDERR "Usage: driver-copy.pl config_file src_ko_dir dst_ko_dir\n";
+ exit 1;
+}
+
+$config = $ARGV[0];
+$srcdir = $ARGV[1];
+$dstdir = $ARGV[2];
+
+open CONFIG, "< $config" or die "Cannot open $config.\n";
+while (<CONFIG>) {
+ s/#.*$//;
+ if (/^(\w+)\s+(\w+)\s+(\d+)\s+(\w+)\s+\"(.*)\"\s*$/) {
+ $flp{$2} = $3;
+ $dsc{$2} = $5;
+ }
+}
+close CONFIG;
+
+-d $srcdir or die "Cannot find $srcdir directory.\n";
+-d $dstdir or die "Cannot find $dstdir directory.\n";
+
+undef $/;
+
+foreach $f (sort keys %flp) {
+ if ($flp{$f} == 1) {
+ print STDERR "$f: There's nothing to do with driver on first floppy.\n";
+ }
+ elsif ($flp{$f} == 2) {
+ $srcfile = $srcdir . '/' . $f . '.ko';
+ $dstfile = $dstdir . '/' . $f . '.ko';
+ $dscfile = $dstdir . '/' . $f . '.dsc';
+ print STDERR "Copying $f.ko to $dstdir\n";
+ open SRC, "< $srcfile" or die "Cannot open $srcfile\n";
+ $file = <SRC>;
+ close SRC;
+ open DST, "> $dstfile" or die "Cannot open $dstfile\n";
+ print DST $file;
+ close DST;
+ open DSC, "> $dscfile" or die "Cannot open $dscfile\n";
+ print DSC $dsc{$f};
+ close DSC;
+ }
+ elsif ($flp{$f} == 3) {
+ # third driver floppy (currently not implemnted yet...)
+ print STDERR "3rd driver floppy support has not implemented yet\n";
+ exit 1;
+ }
+}
diff --git a/release/scripts/driver-remove.pl b/release/scripts/driver-remove.pl
new file mode 100644
index 000000000000..2ff5a8886d65
--- /dev/null
+++ b/release/scripts/driver-remove.pl
@@ -0,0 +1,58 @@
+#!/usr/bin/perl
+#
+# Copyright (c) 2000 "HOSOKAWA, Tatsumi" <hosokawa@FreeBSD.org>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+if ($#ARGV != 1) {
+ print STDERR "Usage: driver-remove.pl config_file BOOTMFS\n";
+ exit 1;
+}
+
+$config = $ARGV[0];
+$bootmfs = $ARGV[1];
+
+open CONFIG, "< $config" or die "Cannot open $config.\n";
+while (<CONFIG>) {
+ s/#.*$//;
+ if (/^(\w+)\s+(\w+)\s+(\d+)\s+(\w+)\s+\"(.*)\"\s*$/) {
+ $drivers{$1} = 1;
+ }
+}
+close CONFIG;
+
+open BOOTMFS, "< $bootmfs" or die "Cannot open $bootmfs.\n";
+while (<BOOTMFS>) {
+ next if (/^device\s+(\w+)/ && $drivers{$1});
+ push @bootmfs, $_;
+}
+close BOOTMFS;
+
+open BOOTMFS, "> $bootmfs" or die "Cannot open $bootmfs.\n";
+foreach (@bootmfs) {
+ print BOOTMFS;
+}
+close BOOTMFS;
diff --git a/sys/alpha/linux/Makefile b/sys/alpha/linux/Makefile
new file mode 100644
index 000000000000..bd6b32a7d4a8
--- /dev/null
+++ b/sys/alpha/linux/Makefile
@@ -0,0 +1,15 @@
+# Makefile for syscall tables
+#
+# $FreeBSD$
+
+all:
+ @echo "make sysent only"
+
+sysent: linux_sysent.c linux_syscall.h linux_proto.h
+
+linux_sysent.c linux_syscall.h linux_proto.h: ../../kern/makesyscalls.sh \
+ syscalls.master syscalls.conf
+ -mv -f linux_sysent.c linux_sysent.c.bak
+ -mv -f linux_syscall.h linux_syscall.h.bak
+ -mv -f linux_proto.h linux_proto.h.bak
+ sh ../../kern/makesyscalls.sh syscalls.master syscalls.conf
diff --git a/sys/alpha/linux/linux_genassym.c b/sys/alpha/linux/linux_genassym.c
new file mode 100644
index 000000000000..d66e6f256e2b
--- /dev/null
+++ b/sys/alpha/linux/linux_genassym.c
@@ -0,0 +1,13 @@
+/* $FreeBSD$ */
+
+#include <stddef.h>
+
+#include <sys/param.h>
+#include <sys/assym.h>
+
+#include <alpha/linux/linux.h>
+
+ASSYM(LINUX_SIGF_HANDLER, offsetof(struct linux_sigframe, sf_handler));
+ASSYM(LINUX_SIGF_SC, offsetof(struct linux_sigframe, sf_sc));
+/* ASSYM(LINUX_SC_GS, offsetof(struct linux_sigcontext, sc_gs)); */
+/* ASSYM(LINUX_SC_EFLAGS, offsetof(struct linux_sigcontext, sc_eflags)); */
diff --git a/sys/alpha/linux/linux_machdep.c b/sys/alpha/linux/linux_machdep.c
new file mode 100644
index 000000000000..fc8f96fcc308
--- /dev/null
+++ b/sys/alpha/linux/linux_machdep.c
@@ -0,0 +1,356 @@
+/*-
+ * Copyright (c) 2000 Marcel Moolenaar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/sysproto.h>
+#include <sys/systm.h>
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+#include <vm/vm_map.h>
+
+#include <sys/proc.h>
+#include <sys/user.h>
+
+#include <alpha/linux/linux.h>
+#include <linux_proto.h>
+#include <compat/linux/linux_signal.h>
+#include <compat/linux/linux_util.h>
+
+struct linux_select_argv {
+ int nfds;
+ fd_set *readfds;
+ fd_set *writefds;
+ fd_set *exceptfds;
+ struct timeval *timeout;
+};
+
+int
+linux_execve(struct proc *p, struct linux_execve_args *args)
+{
+ struct execve_args bsd;
+ caddr_t sg;
+
+ sg = stackgap_init();
+ CHECKALTEXIST(p, &sg, args->path);
+
+#ifdef DEBUG
+ printf("Linux-emul(%d): execve(%s)\n",
+ p->p_pid, args->path);
+#endif
+ bsd.fname = args->path;
+ bsd.argv = args->argp;
+ bsd.envv = args->envp;
+ return (execve(p, &bsd));
+}
+
+int
+linux_fork(struct proc *p, struct linux_fork_args *args)
+{
+ int error;
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): fork()\n", (long)p->p_pid);
+#endif
+ if ((error = fork(p, (struct fork_args *)args)) != 0)
+ return (error);
+
+ if (p->p_retval[1] == 1)
+ p->p_retval[0] = 0;
+
+ return (0);
+}
+
+int
+linux_vfork(struct proc *p, struct linux_vfork_args *args)
+{
+ int error;
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): vfork()\n", (long)p->p_pid);
+#endif
+ if ((error = vfork(p, (struct vfork_args *)args)) != 0)
+ return (error);
+ /* Are we the child? */
+ if (p->p_retval[1] == 1)
+ p->p_retval[0] = 0;
+ return (0);
+}
+
+#define CLONE_VM 0x100
+#define CLONE_FS 0x200
+#define CLONE_FILES 0x400
+#define CLONE_SIGHAND 0x800
+#define CLONE_PID 0x1000
+
+int
+linux_clone(struct proc *p, struct linux_clone_args *args)
+{
+ return ENOSYS;
+}
+
+#define STACK_SIZE (2 * 1024 * 1024)
+#define GUARD_SIZE (4 * PAGE_SIZE)
+
+int
+linux_mmap(struct proc *p, struct linux_mmap_args *linux_args)
+{
+ struct mmap_args /* {
+ caddr_t addr;
+ size_t len;
+ int prot;
+ int flags;
+ int fd;
+ long pad;
+ off_t pos;
+ } */ bsd_args;
+ int error;
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): mmap(%p, 0x%lx, 0x%x, 0x%x, 0x%x, 0x%lx)\n",
+ (long)p->p_pid, (void *)linux_args->addr, linux_args->len,
+ linux_args->prot, linux_args->flags, linux_args->fd, linux_args->pos);
+#endif
+ bsd_args.prot = linux_args->prot | PROT_READ; /* always required */
+
+ bsd_args.flags = 0;
+ if (linux_args->flags & LINUX_MAP_SHARED)
+ bsd_args.flags |= MAP_SHARED;
+ if (linux_args->flags & LINUX_MAP_PRIVATE)
+ bsd_args.flags |= MAP_PRIVATE;
+ if (linux_args->flags & LINUX_MAP_FIXED){
+ bsd_args.flags |= MAP_FIXED;
+ bsd_args.pos = trunc_page(linux_args->pos);
+ } else {
+ bsd_args.pos = linux_args->pos;
+ }
+ if (linux_args->flags & LINUX_MAP_ANON)
+ bsd_args.flags |= MAP_ANON;
+ if (linux_args->flags & LINUX_MAP_GROWSDOWN) {
+ bsd_args.flags |= MAP_STACK;
+
+ /* 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 them maps the top SGROWSIZ bytes,
+ * and autgrows 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).
+ */
+
+ /* This gives us TOS */
+ bsd_args.addr = linux_args->addr + linux_args->len;
+
+ /* This gives us our maximum stack size */
+ if (linux_args->len > STACK_SIZE - GUARD_SIZE)
+ bsd_args.len = linux_args->len;
+ else
+ bsd_args.len = STACK_SIZE - GUARD_SIZE;
+
+ /* This gives us 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.
+ */
+ bsd_args.addr -= bsd_args.len;
+ bsd_args.addr = (caddr_t)round_page(bsd_args.addr); /* XXXX */
+ } else {
+ bsd_args.addr = linux_args->addr;
+ bsd_args.len = linux_args->len;
+ }
+
+ bsd_args.fd = linux_args->fd;
+ if(linux_args->fd == 0)
+ bsd_args.fd = -1;
+
+ bsd_args.pad = 0;
+#ifdef DEBUG
+ printf("Linux-emul(%ld): mmap(%p, 0x%lx, 0x%x, 0x%x, 0x%x, 0x%lx)\n",
+ (long)p->p_pid,
+ (void *)bsd_args.addr,
+ bsd_args.len,
+ bsd_args.prot,
+ bsd_args.flags,
+ bsd_args.fd,
+ bsd_args.pos);
+#endif
+ if (bsd_args.addr == 0)
+ bsd_args.addr = (caddr_t)0x40000000UL;
+ error = mmap(p, &bsd_args);
+#ifdef DEBUG
+ printf("Linux-emul(%ld): mmap returns %d, 0x%lx\n",
+ (long)p->p_pid, error, p->p_retval[0]);
+#endif
+ return (error);
+}
+
+int
+linux_rt_sigsuspend(p, uap)
+ struct proc *p;
+ struct linux_rt_sigsuspend_args *uap;
+{
+ int error;
+ linux_sigset_t lmask;
+ sigset_t *bmask;
+ struct sigsuspend_args bsd;
+ caddr_t sg;
+
+ sg = stackgap_init();
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): rt_sigsuspend(%p, %d)\n", (long)p->p_pid,
+ (void *)uap->newset, uap->sigsetsize);
+#endif
+ if (uap->sigsetsize != sizeof(linux_sigset_t))
+ return (EINVAL);
+
+ error = copyin(uap->newset, &lmask, sizeof(linux_sigset_t));
+ if (error)
+ return (error);
+
+ bmask = stackgap_alloc(&sg, sizeof(sigset_t));
+ linux_to_bsd_sigset(&lmask, bmask);
+ bsd.sigmask = bmask;
+ return (sigsuspend(p, &bsd));
+}
+
+int
+linux_mprotect(p, uap)
+ struct proc *p;
+ struct linux_mprotect_args *uap;
+{
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): mprotect(%p, 0x%lx, 0x%x)\n",
+ (long)p->p_pid, (void *)uap->addr, uap->len, uap->prot);
+#endif
+ return (mprotect(p, (void *)uap));
+}
+
+int
+linux_munmap(p, uap)
+ struct proc *p;
+ struct linux_munmap_args *uap;
+{
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): munmap(%p, 0x%lx)\n",
+ (long)p->p_pid, (void *)uap->addr, uap->len);
+#endif
+ return (munmap(p, (void *)uap));
+}
+
+/*
+ * linux/alpha has 2 mappings for this,
+ * This is here purely to shut the compiler up.
+ */
+
+int
+linux_setpgid(p, uap)
+ struct proc *p;
+ struct linux_setpgid_args *uap;
+{
+
+ return (setpgid(p, (void *)uap));
+}
+
+
+static unsigned int linux_to_bsd_resource[LINUX_RLIM_NLIMITS] = {
+ RLIMIT_CPU, RLIMIT_FSIZE, RLIMIT_DATA, RLIMIT_STACK,
+ RLIMIT_CORE, RLIMIT_RSS, RLIMIT_NOFILE, -1,
+ RLIMIT_NPROC, RLIMIT_MEMLOCK
+};
+
+int dosetrlimit __P((struct proc *p, u_int which, struct rlimit *limp));
+
+int
+linux_setrlimit(p, uap)
+ struct proc *p;
+ struct linux_setrlimit_args *uap;
+{
+ struct rlimit rlim;
+ u_int which;
+ int error;
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): setrlimit(%d, %p)\n",
+ (long)p->p_pid, uap->resource, (void *)uap->rlim);
+#endif
+ if (uap->resource >= LINUX_RLIM_NLIMITS)
+ return EINVAL;
+
+ which = linux_to_bsd_resource[uap->resource];
+
+ if (which == -1)
+ return EINVAL;
+
+ if ((error =
+ copyin((caddr_t)uap->rlim, (caddr_t)&rlim, sizeof (struct rlimit))))
+ return (error);
+ return dosetrlimit(p, which, &rlim);
+}
+
+int
+linux_getrlimit(p, uap)
+ struct proc *p;
+ struct linux_getrlimit_args *uap;
+{
+ u_int which;
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): getrlimit(%d, %p)\n",
+ (long)p->p_pid, uap->resource, (void *)uap->rlim);
+#endif
+ if (uap->resource >= LINUX_RLIM_NLIMITS)
+ return EINVAL;
+
+ which = linux_to_bsd_resource[uap->resource];
+
+ if (which == -1)
+ return EINVAL;
+
+ return (copyout((caddr_t)&p->p_rlimit[which], (caddr_t)uap->rlim,
+ sizeof (struct rlimit)));
+}
diff --git a/sys/i386/linux/linux_machdep.c b/sys/i386/linux/linux_machdep.c
new file mode 100644
index 000000000000..3744e11900c6
--- /dev/null
+++ b/sys/i386/linux/linux_machdep.c
@@ -0,0 +1,694 @@
+/*-
+ * Copyright (c) 2000 Marcel Moolenaar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <sys/proc.h>
+#include <sys/sysproto.h>
+#include <sys/systm.h>
+#include <sys/unistd.h>
+#include <sys/resource.h>
+#include <sys/resourcevar.h>
+
+#include <machine/frame.h>
+#include <machine/psl.h>
+#include <machine/segments.h>
+#include <machine/sysarch.h>
+
+#include <vm/vm.h>
+#include <sys/lock.h>
+#include <vm/pmap.h>
+#include <vm/vm_map.h>
+
+
+#include <i386/linux/linux.h>
+#include <i386/linux/linux_proto.h>
+#include <compat/linux/linux_ipc.h>
+#include <compat/linux/linux_signal.h>
+#include <compat/linux/linux_util.h>
+
+struct linux_descriptor {
+ unsigned int entry_number;
+ unsigned long base_addr;
+ unsigned int limit;
+ unsigned int seg_32bit:1;
+ unsigned int contents:2;
+ unsigned int read_exec_only:1;
+ unsigned int limit_in_pages:1;
+ unsigned int seg_not_present:1;
+ unsigned int useable:1;
+};
+
+struct linux_select_argv {
+ int nfds;
+ fd_set *readfds;
+ fd_set *writefds;
+ fd_set *exceptfds;
+ struct timeval *timeout;
+};
+
+int
+linux_to_bsd_sigaltstack(int lsa)
+{
+ int bsa = 0;
+
+ if (lsa & LINUX_SS_DISABLE)
+ bsa |= SS_DISABLE;
+ if (lsa & LINUX_SS_ONSTACK)
+ bsa |= SS_ONSTACK;
+ if (lsa == LINUX_SS_ONSTACK_BC)
+ bsa = SS_ONSTACK;
+ return (bsa);
+}
+
+int
+bsd_to_linux_sigaltstack(int bsa)
+{
+ int lsa = 0;
+
+ if (bsa & SS_DISABLE)
+ lsa |= LINUX_SS_DISABLE;
+ if (bsa & SS_ONSTACK)
+ lsa |= LINUX_SS_ONSTACK;
+ return (lsa);
+}
+
+int
+linux_execve(struct proc *p, struct linux_execve_args *args)
+{
+ struct execve_args bsd;
+ caddr_t sg;
+
+ sg = stackgap_init();
+ CHECKALTEXIST(p, &sg, args->path);
+
+#ifdef DEBUG
+ printf("Linux-emul(%d): execve(%s)\n",
+ p->p_pid, args->path);
+#endif
+
+ bsd.fname = args->path;
+ bsd.argv = args->argp;
+ bsd.envv = args->envp;
+ return (execve(p, &bsd));
+}
+
+int
+linux_ipc(struct proc *p, struct linux_ipc_args *args)
+{
+ switch (args->what) {
+ case LINUX_SEMOP:
+ return (linux_semop(p, args));
+ case LINUX_SEMGET:
+ return (linux_semget(p, args));
+ case LINUX_SEMCTL:
+ return (linux_semctl(p, args));
+ case LINUX_MSGSND:
+ return (linux_msgsnd(p, args));
+ case LINUX_MSGRCV:
+ return (linux_msgrcv(p, args));
+ case LINUX_MSGGET:
+ return (linux_msgget(p, args));
+ case LINUX_MSGCTL:
+ return (linux_msgctl(p, args));
+ case LINUX_SHMAT:
+ return (linux_shmat(p, args));
+ case LINUX_SHMDT:
+ return (linux_shmdt(p, args));
+ case LINUX_SHMGET:
+ return (linux_shmget(p, args));
+ case LINUX_SHMCTL:
+ return (linux_shmctl(p, args));
+ }
+
+ uprintf("LINUX: 'ipc' typ=%d not implemented\n", args->what);
+ return (ENOSYS);
+}
+
+int
+linux_select(struct proc *p, struct linux_select_args *args)
+{
+ struct linux_select_argv linux_args;
+ struct linux_newselect_args newsel;
+ int error;
+
+#ifdef SELECT_DEBUG
+ printf("Linux-emul(%ld): select(%x)\n", (long)p->p_pid, args->ptr);
+#endif
+
+ error = copyin(args->ptr, &linux_args, sizeof(linux_args));
+ if (error)
+ return (error);
+
+ newsel.nfds = linux_args.nfds;
+ newsel.readfds = linux_args.readfds;
+ newsel.writefds = linux_args.writefds;
+ newsel.exceptfds = linux_args.exceptfds;
+ newsel.timeout = linux_args.timeout;
+ return (linux_newselect(p, &newsel));
+}
+
+int
+linux_fork(struct proc *p, struct linux_fork_args *args)
+{
+ int error;
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): fork()\n", (long)p->p_pid);
+#endif
+
+ if ((error = fork(p, (struct fork_args *)args)) != 0)
+ return (error);
+
+ if (p->p_retval[1] == 1)
+ p->p_retval[0] = 0;
+ return (0);
+}
+
+int
+linux_vfork(struct proc *p, struct linux_vfork_args *args)
+{
+ int error;
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): vfork()\n", (long)p->p_pid);
+#endif
+
+ if ((error = vfork(p, (struct vfork_args *)args)) != 0)
+ return (error);
+ /* Are we the child? */
+ if (p->p_retval[1] == 1)
+ p->p_retval[0] = 0;
+ return (0);
+}
+
+#define CLONE_VM 0x100
+#define CLONE_FS 0x200
+#define CLONE_FILES 0x400
+#define CLONE_SIGHAND 0x800
+#define CLONE_PID 0x1000
+
+int
+linux_clone(struct proc *p, struct linux_clone_args *args)
+{
+ int error, ff = RFPROC;
+ struct proc *p2;
+ int exit_signal;
+ vm_offset_t start;
+ struct rfork_args rf_args;
+
+#ifdef DEBUG
+ if (args->flags & CLONE_PID)
+ printf("linux_clone(%ld): CLONE_PID not yet supported\n",
+ (long)p->p_pid);
+ printf("linux_clone(%ld): invoked with flags %x and stack %x\n",
+ (long)p->p_pid, (unsigned int)args->flags,
+ (unsigned int)args->stack);
+#endif
+
+ if (!args->stack)
+ return (EINVAL);
+
+ exit_signal = args->flags & 0x000000ff;
+ if (exit_signal >= LINUX_NSIG)
+ return (EINVAL);
+
+ if (exit_signal <= LINUX_SIGTBLSZ)
+ exit_signal = linux_to_bsd_signal[_SIG_IDX(exit_signal)];
+
+ /* RFTHREAD probably not necessary here, but it shouldn't hurt */
+ ff |= RFTHREAD;
+
+ if (args->flags & CLONE_VM)
+ ff |= RFMEM;
+ if (args->flags & CLONE_SIGHAND)
+ ff |= RFSIGSHARE;
+ if (!(args->flags & CLONE_FILES))
+ ff |= RFFDG;
+
+ error = 0;
+ start = 0;
+
+ rf_args.flags = ff;
+ if ((error = rfork(p, &rf_args)) != 0)
+ return (error);
+
+ p2 = pfind(p->p_retval[0]);
+ if (p2 == 0)
+ return (ESRCH);
+
+ p2->p_sigparent = exit_signal;
+ p2->p_md.md_regs->tf_esp = (unsigned int)args->stack;
+
+#ifdef DEBUG
+ printf ("linux_clone(%ld): successful rfork to %ld\n", (long)p->p_pid,
+ (long)p2->p_pid);
+#endif
+
+ return (0);
+}
+
+/* XXX move */
+struct linux_mmap_argv {
+ linux_caddr_t addr;
+ int len;
+ int prot;
+ int flags;
+ int fd;
+ int pos;
+};
+
+#define STACK_SIZE (2 * 1024 * 1024)
+#define GUARD_SIZE (4 * PAGE_SIZE)
+
+int
+linux_mmap(struct proc *p, struct linux_mmap_args *args)
+{
+ 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 linux_mmap_argv linux_args;
+
+ error = copyin(args->ptr, &linux_args, sizeof(linux_args));
+ if (error)
+ return (error);
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): mmap(%p, %d, %d, 0x%08x, %d, %d)",
+ (long)p->p_pid, (void *)linux_args.addr, linux_args.len,
+ linux_args.prot, linux_args.flags, linux_args.fd, linux_args.pos);
+#endif
+
+ bsd_args.flags = 0;
+ if (linux_args.flags & LINUX_MAP_SHARED)
+ bsd_args.flags |= MAP_SHARED;
+ if (linux_args.flags & LINUX_MAP_PRIVATE)
+ bsd_args.flags |= MAP_PRIVATE;
+ if (linux_args.flags & LINUX_MAP_FIXED)
+ bsd_args.flags |= MAP_FIXED;
+ if (linux_args.flags & LINUX_MAP_ANON)
+ bsd_args.flags |= MAP_ANON;
+ if (linux_args.flags & LINUX_MAP_GROWSDOWN) {
+ bsd_args.flags |= MAP_STACK;
+
+ /* 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 them maps the top SGROWSIZ bytes,
+ * and autgrows 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).
+ */
+
+ /* This gives us TOS */
+ bsd_args.addr = linux_args.addr + linux_args.len;
+
+ if (bsd_args.addr > 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.
+ */
+ p->p_vmspace->vm_maxsaddr = (char *)USRSTACK -
+ p->p_rlimit[RLIMIT_STACK].rlim_cur;
+ }
+
+ /* This gives us our maximum stack size */
+ if (linux_args.len > STACK_SIZE - GUARD_SIZE)
+ bsd_args.len = linux_args.len;
+ else
+ bsd_args.len = STACK_SIZE - GUARD_SIZE;
+
+ /* This gives us 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.
+ */
+ bsd_args.addr -= bsd_args.len;
+ } else {
+ bsd_args.addr = linux_args.addr;
+ bsd_args.len = linux_args.len;
+ }
+
+ bsd_args.prot = linux_args.prot | PROT_READ; /* always required */
+ if (linux_args.flags & LINUX_MAP_ANON)
+ bsd_args.fd = -1;
+ else
+ bsd_args.fd = linux_args.fd;
+ bsd_args.pos = linux_args.pos;
+ bsd_args.pad = 0;
+
+#ifdef DEBUG
+ printf("-> (%p, %d, %d, 0x%08x, %d, %d)\n", (void *)bsd_args.addr,
+ bsd_args.len, bsd_args.prot, bsd_args.flags, bsd_args.fd,
+ (int)bsd_args.pos);
+#endif
+
+ return (mmap(p, &bsd_args));
+}
+
+int
+linux_pipe(struct proc *p, struct linux_pipe_args *args)
+{
+ int error;
+ int reg_edx;
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): pipe(*)\n", (long)p->p_pid);
+#endif
+
+ reg_edx = p->p_retval[1];
+ error = pipe(p, 0);
+ if (error) {
+ p->p_retval[1] = reg_edx;
+ return (error);
+ }
+
+ error = copyout(p->p_retval, args->pipefds, 2*sizeof(int));
+ if (error) {
+ p->p_retval[1] = reg_edx;
+ return (error);
+ }
+
+ p->p_retval[1] = reg_edx;
+ p->p_retval[0] = 0;
+ return (0);
+}
+
+int
+linux_ioperm(struct proc *p, struct linux_ioperm_args *args)
+{
+ struct sysarch_args sa;
+ struct i386_ioperm_args *iia;
+ caddr_t sg;
+
+ sg = stackgap_init();
+ iia = stackgap_alloc(&sg, sizeof(struct i386_ioperm_args));
+ iia->start = args->start;
+ iia->length = args->length;
+ iia->enable = args->enable;
+ sa.op = I386_SET_IOPERM;
+ sa.parms = (char *)iia;
+ return (sysarch(p, &sa));
+}
+
+int
+linux_iopl(struct proc *p, struct linux_iopl_args *args)
+{
+ int error;
+
+ if (args->level < 0 || args->level > 3)
+ return (EINVAL);
+ if ((error = suser(p)) != 0)
+ return (error);
+ if (securelevel > 0)
+ return (EPERM);
+ p->p_md.md_regs->tf_eflags = (p->p_md.md_regs->tf_eflags & ~PSL_IOPL) |
+ (args->level * (PSL_IOPL / 3));
+ return (0);
+}
+
+int
+linux_modify_ldt(p, uap)
+ struct proc *p;
+ struct linux_modify_ldt_args *uap;
+{
+ int error;
+ caddr_t sg;
+ struct sysarch_args args;
+ struct i386_ldt_args *ldt;
+ struct linux_descriptor ld;
+ union descriptor *desc;
+
+ sg = stackgap_init();
+
+ if (uap->ptr == NULL)
+ return (EINVAL);
+
+ switch (uap->func) {
+ case 0x00: /* read_ldt */
+ ldt = stackgap_alloc(&sg, sizeof(*ldt));
+ ldt->start = 0;
+ ldt->descs = uap->ptr;
+ ldt->num = uap->bytecount / sizeof(union descriptor);
+ args.op = I386_GET_LDT;
+ args.parms = (char*)ldt;
+ error = sysarch(p, &args);
+ p->p_retval[0] *= sizeof(union descriptor);
+ break;
+ case 0x01: /* write_ldt */
+ case 0x11: /* write_ldt */
+ if (uap->bytecount != sizeof(ld))
+ return (EINVAL);
+
+ error = copyin(uap->ptr, &ld, sizeof(ld));
+ if (error)
+ return (error);
+
+ ldt = stackgap_alloc(&sg, sizeof(*ldt));
+ desc = stackgap_alloc(&sg, sizeof(*desc));
+ ldt->start = ld.entry_number;
+ ldt->descs = desc;
+ ldt->num = 1;
+ desc->sd.sd_lolimit = (ld.limit & 0x0000ffff);
+ desc->sd.sd_hilimit = (ld.limit & 0x000f0000) >> 16;
+ desc->sd.sd_lobase = (ld.base_addr & 0x00ffffff);
+ desc->sd.sd_hibase = (ld.base_addr & 0xff000000) >> 24;
+ desc->sd.sd_type = SDT_MEMRO | ((ld.read_exec_only ^ 1) << 1) |
+ (ld.contents << 2);
+ desc->sd.sd_dpl = 3;
+ desc->sd.sd_p = (ld.seg_not_present ^ 1);
+ desc->sd.sd_xx = 0;
+ desc->sd.sd_def32 = ld.seg_32bit;
+ desc->sd.sd_gran = ld.limit_in_pages;
+ args.op = I386_SET_LDT;
+ args.parms = (char*)ldt;
+ error = sysarch(p, &args);
+ break;
+ default:
+ error = EINVAL;
+ break;
+ }
+
+ if (error == EOPNOTSUPP) {
+ printf("linux: modify_ldt needs kernel option USER_LDT\n");
+ error = ENOSYS;
+ }
+
+ return (error);
+}
+
+int
+linux_sigaction(struct proc *p, struct linux_sigaction_args *args)
+{
+ linux_osigaction_t osa;
+ linux_sigaction_t act, oact;
+ int error;
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): sigaction(%d, %p, %p)\n", (long)p->p_pid,
+ args->sig, (void *)args->nsa, (void *)args->osa);
+#endif
+
+ if (args->nsa != NULL) {
+ error = copyin(args->nsa, &osa, sizeof(linux_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(p, 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(linux_osigaction_t));
+ }
+
+ return (error);
+}
+
+/*
+ * Linux has two extra args, restart and oldmask. We dont 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 proc *p, struct linux_sigsuspend_args *args)
+{
+ struct sigsuspend_args bsd;
+ sigset_t *sigmask;
+ linux_sigset_t mask;
+ caddr_t sg = stackgap_init();
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): sigsuspend(%08lx)\n",
+ (long)p->p_pid, (unsigned long)args->mask);
+#endif
+
+ sigmask = stackgap_alloc(&sg, sizeof(sigset_t));
+ LINUX_SIGEMPTYSET(mask);
+ mask.__bits[0] = args->mask;
+ linux_to_bsd_sigset(&mask, sigmask);
+ bsd.sigmask = sigmask;
+ return (sigsuspend(p, &bsd));
+}
+
+int
+linux_rt_sigsuspend(p, uap)
+ struct proc *p;
+ struct linux_rt_sigsuspend_args *uap;
+{
+ linux_sigset_t lmask;
+ sigset_t *bmask;
+ struct sigsuspend_args bsd;
+ caddr_t sg = stackgap_init();
+ int error;
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): rt_sigsuspend(%p, %d)\n", (long)p->p_pid,
+ (void *)uap->newset, uap->sigsetsize);
+#endif
+
+ if (uap->sigsetsize != sizeof(linux_sigset_t))
+ return (EINVAL);
+
+ error = copyin(uap->newset, &lmask, sizeof(linux_sigset_t));
+ if (error)
+ return (error);
+
+ bmask = stackgap_alloc(&sg, sizeof(sigset_t));
+ linux_to_bsd_sigset(&lmask, bmask);
+ bsd.sigmask = bmask;
+ return (sigsuspend(p, &bsd));
+}
+
+int
+linux_pause(struct proc *p, struct linux_pause_args *args)
+{
+ struct sigsuspend_args bsd;
+ sigset_t *sigmask;
+ caddr_t sg = stackgap_init();
+
+#ifdef DEBUG
+ printf("Linux-emul(%d): pause()\n", p->p_pid);
+#endif
+
+ sigmask = stackgap_alloc(&sg, sizeof(sigset_t));
+ *sigmask = p->p_sigmask;
+ bsd.sigmask = sigmask;
+ return (sigsuspend(p, &bsd));
+}
+
+int
+linux_sigaltstack(p, uap)
+ struct proc *p;
+ struct linux_sigaltstack_args *uap;
+{
+ struct sigaltstack_args bsd;
+ stack_t *ss, *oss;
+ linux_stack_t lss;
+ int error;
+ caddr_t sg = stackgap_init();
+
+#ifdef DEBUG
+ printf("Linux-emul(%ld): sigaltstack(%p, %p)\n",
+ (long)p->p_pid, uap->uss, uap->uoss);
+#endif
+
+ if (uap->uss == NULL) {
+ ss = NULL;
+ } else {
+ error = copyin(uap->uss, &lss, sizeof(linux_stack_t));
+ if (error)
+ return (error);
+
+ ss = stackgap_alloc(&sg, sizeof(stack_t));
+ ss->ss_sp = lss.ss_sp;
+ ss->ss_size = (lss.ss_size >= LINUX_MINSIGSTKSZ &&
+ lss.ss_size < MINSIGSTKSZ) ? MINSIGSTKSZ : lss.ss_size;
+ ss->ss_flags = linux_to_bsd_sigaltstack(lss.ss_flags);
+ }
+ oss = (uap->uoss != NULL)
+ ? stackgap_alloc(&sg, sizeof(stack_t))
+ : NULL;
+
+ bsd.ss = ss;
+ bsd.oss = oss;
+ error = sigaltstack(p, &bsd);
+
+ if (!error && oss != NULL) {
+ lss.ss_sp = 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(linux_stack_t));
+ }
+ if (!error && (ss != NULL) && (lss.ss_size < ss->ss_size))
+ p->p_sigstk.ss_size = lss.ss_size;
+
+ return (error);
+}
generated by cgit v1.3 (git 2.53.0) at 2026-08-08 19:32:38 +0000