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author | Mark Newton <newton@FreeBSD.org> | 1999-01-30 06:29:48 +0000 |
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committer | Mark Newton <newton@FreeBSD.org> | 1999-01-30 06:29:48 +0000 |
commit | f22dd58acc33489c11e8b6c3ad4038c9393e4980 (patch) | |
tree | 0e997d66b2730a71d886672954027bf3ab6bcb87 /sys/compat/svr4/svr4_filio.c | |
parent | bd56b99ac3360a6e54ac2c03905426d78f25c745 (diff) | |
download | src-f22dd58acc33489c11e8b6c3ad4038c9393e4980.tar.gz src-f22dd58acc33489c11e8b6c3ad4038c9393e4980.zip |
Emulator KLD for SysVR4 executables grabbed from NetBSD.
See http://www.freebsd.org/~newton/freebsd-svr4 for limitations,
capabilities, history and TO-DO list.
Notes
Notes:
svn path=/head/; revision=43412
Diffstat (limited to 'sys/compat/svr4/svr4_filio.c')
-rw-r--r-- | sys/compat/svr4/svr4_filio.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/sys/compat/svr4/svr4_filio.c b/sys/compat/svr4/svr4_filio.c new file mode 100644 index 000000000000..c82b09bace1e --- /dev/null +++ b/sys/compat/svr4/svr4_filio.c @@ -0,0 +1,245 @@ +/* + * 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. + */ + +#include <sys/param.h> +#include <sys/proc.h> +#include <sys/systm.h> +#include <sys/file.h> +#include <sys/filio.h> +#include <sys/fcntl.h> +#include <sys/signal.h> +#include <sys/unistd.h> +#include <sys/filedesc.h> +#include <sys/termios.h> +#include <sys/tty.h> +#include <sys/poll.h> +#include <sys/socket.h> +#include <sys/socketvar.h> +#include <sys/mount.h> +#include <net/if.h> +#include <sys/malloc.h> + +#include <sys/sysproto.h> + +#include <svr4/svr4.h> +#include <svr4/svr4_types.h> +#include <svr4/svr4_util.h> +#include <svr4/svr4_signal.h> +#include <svr4/svr4_proto.h> +#include <svr4/svr4_ioctl.h> +#include <svr4/svr4_filio.h> + +/*#define GROTTY_READ_HACK*/ + +int +svr4_sys_poll(p, uap) + struct proc *p; + 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(p, (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 & (POLLIN | POLLRDNORM | POLLRDBAND | POLLPRI)) + pfd[idx].revents |= (POLLIN | POLLRDBAND | POLLRDNORM | POLLPRI); + if (pfd[idx].revents & (POLLOUT | POLLWRNORM | POLLWRBAND)) + pfd[idx].revents |= (POLLOUT | POLLWRNORM | POLLWRBAND); + pfd[idx].revents &= POLLSTANDARD; /* don't want to surprise SysV */ + + DPRINTF(("pollfd[%d]->fd = %d\n", idx, pfd[idx].fd)); + DPRINTF(("pollfd[%d]->events = %x\n", idx, pfd[idx].events)); + DPRINTF(("pollfd[%d]->revents = %x\n", idx, pfd[idx].revents)); + } + DPRINTF(("poll(%x, %x, %d) = %d\n", SCARG(uap, fds), SCARG(uap, nfds), + SCARG(uap, timeout), p->p_retval[0])); + 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(p, uap) + struct proc *p; + 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 + } + + rv = read(p, &ra); + + 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(p, uap) + struct proc *p; + 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); + + rv = write(p, &wa); + + 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, p, retval, fd, cmd, data) + struct file *fp; + struct proc *p; + register_t *retval; + int fd; + u_long cmd; + caddr_t data; +{ + int error; + int num; + struct filedesc *fdp = p->p_fd; + int (*ctl) __P((struct file *, u_long, caddr_t, struct proc *)) = + fp->f_ops->fo_ioctl; + + *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 = (*ctl)(fp, cmd, (caddr_t) &num, p); + + if (error) + return error; + + return copyout(&num, data, sizeof(num)); + + default: + DPRINTF(("Unknown svr4 filio %lx\n", cmd)); + return 0; /* ENOSYS really */ + } +} |