Collect the MD syscalls from /sys/compat/linux here. Since this
is a new file, fix most of the style bugs at the same time.
This commit is contained in:
Marcel Moolenaar
parent
3a1030f458
commit
146aad745b
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=64921
634
sys/alpha/linux/linux_machdep.c
Normal file
634
sys/alpha/linux/linux_machdep.c
Normal file
@ -0,0 +1,634 @@
|
||||
/*-
|
||||
* 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 withough 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 <machine/frame.h>
|
||||
#include <machine/psl.h>
|
||||
#include <machine/segments.h>
|
||||
#include <machine/sysarch.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_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;
|
||||
|
||||
/* 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
|
||||
|
||||
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;
|
||||
ss->ss_flags = 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 = oss->ss_flags;
|
||||
error = copyout(&lss, uap->uoss, sizeof(linux_stack_t));
|
||||
}
|
||||
|
||||
return (error);
|
||||
}
|
||||
634
sys/i386/linux/linux_machdep.c
Normal file
634
sys/i386/linux/linux_machdep.c
Normal file
@ -0,0 +1,634 @@
|
||||
/*-
|
||||
* 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 withough 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 <machine/frame.h>
|
||||
#include <machine/psl.h>
|
||||
#include <machine/segments.h>
|
||||
#include <machine/sysarch.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_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;
|
||||
|
||||
/* 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
|
||||
|
||||
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;
|
||||
ss->ss_flags = 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 = oss->ss_flags;
|
||||
error = copyout(&lss, uap->uoss, sizeof(linux_stack_t));
|
||||
}
|
||||
|
||||
return (error);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user