0ba59a6f70
the semantics in that the returned filename to use is now a kernel pointer rather than a user space pointer. This required changing the arguments to the CHECKALT*() macros some and changing the various system calls that used pathnames to use the kern_foo() functions that can accept kernel space filename pointers instead of calling the system call directly. - Use kern_open(), kern_access(), kern_execve(), kern_mkfifo(), kern_mknod(), kern_setitimer(), kern_getrusage(), kern_utimes(), kern_unlink(), kern_chdir(), kern_chmod(), kern_chown(), kern_symlink(), kern_readlink(), kern_select(), kern_statfs(), kern_fstatfs(), kern_stat(), kern_lstat(), kern_fstat(). - Drop the unused 'uap' argument from spx_open(). - Replace a stale duplication of vn_access() in xenix_access() lacking recent additions such as MAC checks, etc. with a call to kern_access().
136 lines
3.7 KiB
C
136 lines
3.7 KiB
C
/*-
|
|
* Copyright (c) 1995 Steven Wallace
|
|
* 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. 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/*
|
|
* IBCS2 message compatibility module.
|
|
*
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/syscallsubr.h>
|
|
#include <sys/sysproto.h>
|
|
|
|
#include <i386/ibcs2/ibcs2_types.h>
|
|
#include <i386/ibcs2/ibcs2_signal.h>
|
|
#include <i386/ibcs2/ibcs2_util.h>
|
|
#include <i386/ibcs2/ibcs2_poll.h>
|
|
#include <i386/ibcs2/ibcs2_proto.h>
|
|
|
|
|
|
int
|
|
ibcs2_getmsg(td, uap)
|
|
struct thread *td;
|
|
struct ibcs2_getmsg_args *uap;
|
|
{
|
|
return 0; /* fake */
|
|
}
|
|
|
|
int
|
|
ibcs2_putmsg(td, uap)
|
|
struct thread *td;
|
|
struct ibcs2_putmsg_args *uap;
|
|
{
|
|
return 0; /* fake */
|
|
}
|
|
|
|
|
|
int
|
|
ibcs2_poll(td, uap)
|
|
struct thread *td;
|
|
struct ibcs2_poll_args *uap;
|
|
{
|
|
int error, i, nfds;
|
|
fd_set *readfds, *writefds, *exceptfds;
|
|
struct timeval timeout, *tp;
|
|
struct ibcs2_poll conv;
|
|
caddr_t sg = stackgap_init();
|
|
|
|
if (uap->nfds > FD_SETSIZE)
|
|
return EINVAL;
|
|
readfds = stackgap_alloc(&sg, sizeof(fd_set *));
|
|
writefds = stackgap_alloc(&sg, sizeof(fd_set *));
|
|
exceptfds = stackgap_alloc(&sg, sizeof(fd_set *));
|
|
|
|
FD_ZERO(readfds);
|
|
FD_ZERO(writefds);
|
|
FD_ZERO(exceptfds);
|
|
if (uap->timeout == -1)
|
|
tp = NULL;
|
|
else {
|
|
timeout.tv_usec = (uap->timeout % 1000)*1000;
|
|
timeout.tv_sec = uap->timeout / 1000;
|
|
tp = &timeout;
|
|
}
|
|
|
|
nfds = 0;
|
|
for (i = 0; i < uap->nfds; i++) {
|
|
if ((error = copyin(uap->fds + i*sizeof(struct ibcs2_poll),
|
|
&conv, sizeof(conv))) != 0)
|
|
return error;
|
|
conv.revents = 0;
|
|
if (conv.fd < 0 || conv.fd > FD_SETSIZE)
|
|
continue;
|
|
if (conv.fd >= nfds)
|
|
nfds = conv.fd + 1;
|
|
if (conv.events & IBCS2_READPOLL)
|
|
FD_SET(conv.fd, readfds);
|
|
if (conv.events & IBCS2_WRITEPOLL)
|
|
FD_SET(conv.fd, writefds);
|
|
FD_SET(conv.fd, exceptfds);
|
|
}
|
|
error = kern_select(td, nfds, readfds, writefds, exceptfds, tp);
|
|
if (error != 0)
|
|
return error;
|
|
if (td->td_retval[0] == 0)
|
|
return 0;
|
|
td->td_retval[0] = 0;
|
|
for (td->td_retval[0] = 0, i = 0; i < uap->nfds; i++) {
|
|
copyin(uap->fds + i*sizeof(struct ibcs2_poll),
|
|
&conv, sizeof(conv));
|
|
conv.revents = 0;
|
|
if (conv.fd < 0 || conv.fd > FD_SETSIZE)
|
|
/* should check for open as well */
|
|
conv.revents |= IBCS2_POLLNVAL;
|
|
else {
|
|
if (FD_ISSET(conv.fd, readfds))
|
|
conv.revents |= IBCS2_POLLIN;
|
|
if (FD_ISSET(conv.fd, writefds))
|
|
conv.revents |= IBCS2_POLLOUT;
|
|
if (FD_ISSET(conv.fd, exceptfds))
|
|
conv.revents |= IBCS2_POLLERR;
|
|
if (conv.revents)
|
|
++td->td_retval[0];
|
|
}
|
|
if ((error = copyout(&conv,
|
|
uap->fds + i*sizeof(struct ibcs2_poll),
|
|
sizeof(conv))) != 0)
|
|
return error;
|
|
}
|
|
return 0;
|
|
}
|