/* * Copyright (c) 1998 Mark Newton * Copyright (c) 1994 Christos Zoulas * 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. * 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: src/sys/svr4/svr4_filio.c,v 1.8 2000/01/15 15:30:44 newton Exp $ * $DragonFly: src/sys/emulation/svr4/Attic/svr4_filio.c,v 1.7 2003/08/07 21:17:19 dillon Exp $ */ #include #include #include #include #include #include #include #include #include #include #include #include "svr4.h" #include "svr4_types.h" #include "svr4_util.h" #include "svr4_signal.h" #include "svr4_proto.h" #include "svr4_ioctl.h" #include "svr4_filio.h" /*#define GROTTY_READ_HACK*/ int svr4_sys_poll(struct svr4_sys_poll_args *uap) { int error; struct poll_args pa; struct pollfd *pfd; int idx = 0, cerr; u_long siz; SCARG(&pa, fds) = SCARG(uap, fds); SCARG(&pa, nfds) = SCARG(uap, nfds); SCARG(&pa, timeout) = SCARG(uap, timeout); siz = SCARG(uap, nfds) * sizeof(struct pollfd); pfd = (struct pollfd *)malloc(siz, M_TEMP, M_WAITOK); error = poll((struct poll_args *)uap); if ((cerr = copyin(SCARG(uap, fds), pfd, siz)) != 0) { error = cerr; goto done; } for (idx = 0; idx < SCARG(uap, nfds); idx++) { /* POLLWRNORM already equals POLLOUT, so we don't worry about that */ if (pfd[idx].revents & (POLLOUT | POLLWRNORM | POLLWRBAND)) pfd[idx].revents |= (POLLOUT | POLLWRNORM | POLLWRBAND); } if ((cerr = copyout(pfd, SCARG(uap, fds), siz)) != 0) { error = cerr; goto done; /* yeah, I know it's the next line, but this way I won't forget to update it if I add more code */ } done: free(pfd, M_TEMP); return error; } #if defined(READ_TEST) int svr4_sys_read(struct svr4_sys_read_args *uap) { struct read_args ra; struct filedesc *fdp = p->p_fd; struct file *fp; struct socket *so = NULL; int so_state; sigset_t sigmask; int rv; SCARG(&ra, fd) = SCARG(uap, fd); SCARG(&ra, buf) = SCARG(uap, buf); SCARG(&ra, nbyte) = SCARG(uap, nbyte); if ((fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL) { DPRINTF(("Something fishy with the user-supplied file descriptor...\n")); return EBADF; } if (fp->f_type == DTYPE_SOCKET) { so = (struct socket *)fp->f_data; DPRINTF(("fd %d is a socket\n", SCARG(uap, fd))); if (so->so_state & SS_ASYNC) { DPRINTF(("fd %d is an ASYNC socket!\n", SCARG(uap, fd))); } DPRINTF(("Here are its flags: 0x%x\n", so->so_state)); #if defined(GROTTY_READ_HACK) so_state = so->so_state; so->so_state &= ~SS_NBIO; #endif } ra.sysmsg_result = 0; rv = read(&ra); uap->sysmsg_result = ra.sysmsg_result; DPRINTF(("svr4_read(%d, 0x%0x, %d) = %d\n", SCARG(uap, fd), SCARG(uap, buf), SCARG(uap, nbyte), rv)); if (rv == EAGAIN) { DPRINTF(("sigmask = 0x%x\n", p->p_sigmask)); DPRINTF(("sigignore = 0x%x\n", p->p_sigignore)); DPRINTF(("sigcaught = 0x%x\n", p->p_sigcatch)); DPRINTF(("siglist = 0x%x\n", p->p_siglist)); } #if defined(GROTTY_READ_HACK) if (so) { /* We've already checked to see if this is a socket */ so->so_state = so_state; } #endif return(rv); } #endif /* READ_TEST */ #if defined(BOGUS) int svr4_sys_write(struct svr4_sys_write_args *uap) { struct write_args wa; struct filedesc *fdp; struct file *fp; int rv; SCARG(&wa, fd) = SCARG(uap, fd); SCARG(&wa, buf) = SCARG(uap, buf); SCARG(&wa, nbyte) = SCARG(uap, nbyte); wa.sysmsg_result = 0; rv = write(&wa); uap->sysmsg_result = wa.sysmsg_result; DPRINTF(("svr4_write(%d, 0x%0x, %d) = %d\n", SCARG(uap, fd), SCARG(uap, buf), SCARG(uap, nbyte), rv)); return(rv); } #endif /* BOGUS */ int svr4_fil_ioctl(fp, td, retval, fd, cmd, data) struct file *fp; struct thread *td; register_t *retval; int fd; u_long cmd; caddr_t data; { struct proc *p = td->td_proc; int error; int num; struct filedesc *fdp; KKASSERT(p); fdp = p->p_fd; *retval = 0; switch (cmd) { case SVR4_FIOCLEX: fdp->fd_ofileflags[fd] |= UF_EXCLOSE; return 0; case SVR4_FIONCLEX: fdp->fd_ofileflags[fd] &= ~UF_EXCLOSE; return 0; case SVR4_FIOGETOWN: case SVR4_FIOSETOWN: case SVR4_FIOASYNC: case SVR4_FIONBIO: case SVR4_FIONREAD: if ((error = copyin(data, &num, sizeof(num))) != 0) return error; switch (cmd) { case SVR4_FIOGETOWN: cmd = FIOGETOWN; break; case SVR4_FIOSETOWN: cmd = FIOSETOWN; break; case SVR4_FIOASYNC: cmd = FIOASYNC; break; case SVR4_FIONBIO: cmd = FIONBIO; break; case SVR4_FIONREAD: cmd = FIONREAD; break; } #ifdef SVR4_DEBUG if (cmd == FIOASYNC) DPRINTF(("FIOASYNC\n")); #endif error = fo_ioctl(fp, cmd, (caddr_t) &num, td); if (error) return error; return copyout(&num, data, sizeof(num)); default: DPRINTF(("Unknown svr4 filio %lx\n", cmd)); return 0; /* ENOSYS really */ } }