4a14441044
further refinement is required as some device drivers intended to be portable over FreeBSD versions rely on __FreeBSD_version to decide whether to include capability.h. MFC after: 3 weeks
253 lines
6.6 KiB
C
253 lines
6.6 KiB
C
/*-
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* Copyright (c) 1998 Mark Newton
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* Copyright (c) 1994 Christos Zoulas
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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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* 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/proc.h>
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#include <sys/systm.h>
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#include <sys/capsicum.h>
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#include <sys/file.h>
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#include <sys/filio.h>
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#include <sys/lock.h>
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#include <sys/signal.h>
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#include <sys/filedesc.h>
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#include <sys/poll.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/sysproto.h>
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#include <compat/svr4/svr4.h>
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#include <compat/svr4/svr4_types.h>
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#include <compat/svr4/svr4_util.h>
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#include <compat/svr4/svr4_signal.h>
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#include <compat/svr4/svr4_proto.h>
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#include <compat/svr4/svr4_ioctl.h>
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#include <compat/svr4/svr4_filio.h>
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/*#define GROTTY_READ_HACK*/
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int
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svr4_sys_poll(td, uap)
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struct thread *td;
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struct svr4_sys_poll_args *uap;
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{
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int error;
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struct poll_args pa;
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struct pollfd *pfd;
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int idx = 0, cerr;
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u_long siz;
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if (uap->nfds > maxfilesperproc && uap->nfds > FD_SETSIZE)
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return (EINVAL);
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pa.fds = uap->fds;
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pa.nfds = uap->nfds;
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pa.timeout = uap->timeout;
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siz = uap->nfds * sizeof(struct pollfd);
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pfd = (struct pollfd *)malloc(siz, M_TEMP, M_WAITOK);
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error = sys_poll(td, (struct poll_args *)uap);
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if ((cerr = copyin(uap->fds, pfd, siz)) != 0) {
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error = cerr;
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goto done;
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}
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for (idx = 0; idx < uap->nfds; idx++) {
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/* POLLWRNORM already equals POLLOUT, so we don't worry about that */
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if (pfd[idx].revents & (POLLOUT | POLLWRNORM | POLLWRBAND))
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pfd[idx].revents |= (POLLOUT | POLLWRNORM | POLLWRBAND);
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}
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if ((cerr = copyout(pfd, uap->fds, siz)) != 0) {
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error = cerr;
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goto done; /* yeah, I know it's the next line, but this way I won't
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forget to update it if I add more code */
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}
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done:
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free(pfd, M_TEMP);
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return error;
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}
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#if defined(READ_TEST)
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int
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svr4_sys_read(td, uap)
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struct thread *td;
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struct svr4_sys_read_args *uap;
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{
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struct read_args ra;
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cap_rights_t rights;
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struct file *fp;
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struct socket *so = NULL;
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int so_state;
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sigset_t sigmask;
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int rv;
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ra.fd = uap->fd;
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ra.buf = uap->buf;
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ra.nbyte = uap->nbyte;
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if (fget(td, uap->fd, cap_rights_init(&rights, CAP_READ), &fp) != 0) {
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DPRINTF(("Something fishy with the user-supplied file descriptor...\n"));
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return EBADF;
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}
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if (fp->f_type == DTYPE_SOCKET) {
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so = fp->f_data;
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DPRINTF(("fd %d is a socket\n", uap->fd));
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if (so->so_state & SS_ASYNC) {
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DPRINTF(("fd %d is an ASYNC socket!\n", uap->fd));
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}
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DPRINTF(("Here are its flags: 0x%x\n", so->so_state));
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#if defined(GROTTY_READ_HACK)
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so_state = so->so_state;
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so->so_state &= ~SS_NBIO;
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#endif
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}
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rv = read(td, &ra);
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DPRINTF(("svr4_read(%d, 0x%0x, %d) = %d\n",
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uap->fd, uap->buf, uap->nbyte, rv));
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if (rv == EAGAIN) {
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#ifdef DEBUG_SVR4
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struct sigacts *ps;
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PROC_LOCK(td->td_proc);
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ps = td->td_proc->p_sigacts;
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mtx_lock(&ps->ps_mtx);
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#endif
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DPRINTF(("sigmask = 0x%x\n", td->td_sigmask));
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DPRINTF(("sigignore = 0x%x\n", ps->ps_sigignore));
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DPRINTF(("sigcaught = 0x%x\n", ps->ps_sigcatch));
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DPRINTF(("siglist = 0x%x\n", td->td_siglist));
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#ifdef DEBUG_SVR4
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mtx_unlock(&ps->ps_mtx);
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PROC_UNLOCK(td->td_proc);
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#endif
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}
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#if defined(GROTTY_READ_HACK)
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if (so) { /* We've already checked to see if this is a socket */
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so->so_state = so_state;
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}
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#endif
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fdrop(fp, td);
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return(rv);
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}
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#endif /* READ_TEST */
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#if defined(BOGUS)
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int
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svr4_sys_write(td, uap)
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struct thread *td;
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struct svr4_sys_write_args *uap;
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{
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struct write_args wa;
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struct file *fp;
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int rv;
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wa.fd = uap->fd;
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wa.buf = uap->buf;
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wa.nbyte = uap->nbyte;
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rv = write(td, &wa);
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DPRINTF(("svr4_write(%d, 0x%0x, %d) = %d\n",
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uap->fd, uap->buf, uap->nbyte, rv));
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return(rv);
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}
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#endif /* BOGUS */
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int
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svr4_fil_ioctl(fp, td, retval, fd, cmd, data)
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struct file *fp;
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struct thread *td;
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register_t *retval;
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int fd;
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u_long cmd;
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caddr_t data;
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{
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struct filedesc *fdp = td->td_proc->p_fd;
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struct filedescent *fde;
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int error, num;
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*retval = 0;
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switch (cmd) {
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case SVR4_FIOCLEX:
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FILEDESC_XLOCK(fdp);
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fde = &fdp->fd_ofiles[fd];
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fde->fde_flags |= UF_EXCLOSE;
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FILEDESC_XUNLOCK(fdp);
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return 0;
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case SVR4_FIONCLEX:
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FILEDESC_XLOCK(fdp);
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fde = &fdp->fd_ofiles[fd];
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fde->fde_flags &= ~UF_EXCLOSE;
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FILEDESC_XUNLOCK(fdp);
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return 0;
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case SVR4_FIOGETOWN:
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case SVR4_FIOSETOWN:
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case SVR4_FIOASYNC:
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case SVR4_FIONBIO:
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case SVR4_FIONREAD:
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if ((error = copyin(data, &num, sizeof(num))) != 0)
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return error;
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switch (cmd) {
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case SVR4_FIOGETOWN: cmd = FIOGETOWN; break;
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case SVR4_FIOSETOWN: cmd = FIOSETOWN; break;
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case SVR4_FIOASYNC: cmd = FIOASYNC; break;
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case SVR4_FIONBIO: cmd = FIONBIO; break;
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case SVR4_FIONREAD: cmd = FIONREAD; break;
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}
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#ifdef SVR4_DEBUG
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if (cmd == FIOASYNC) DPRINTF(("FIOASYNC\n"));
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#endif
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error = fo_ioctl(fp, cmd, (caddr_t) &num, td->td_ucred, td);
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if (error)
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return error;
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return copyout(&num, data, sizeof(num));
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default:
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DPRINTF(("Unknown svr4 filio %lx\n", cmd));
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return 0; /* ENOSYS really */
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}
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}
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