svr4_filio.c revision 51418
1/* 2 * Copyright (c) 1998 Mark Newton 3 * Copyright (c) 1994 Christos Zoulas 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD: head/sys/compat/svr4/svr4_filio.c 51418 1999-09-19 17:00:25Z green $ 29 */ 30 31#include <sys/param.h> 32#include <sys/proc.h> 33#include <sys/systm.h> 34#include <sys/file.h> 35#include <sys/filio.h> 36#include <sys/fcntl.h> 37#include <sys/signal.h> 38#include <sys/unistd.h> 39#include <sys/filedesc.h> 40#include <sys/termios.h> 41#include <sys/tty.h> 42#include <sys/poll.h> 43#include <sys/socket.h> 44#include <sys/socketvar.h> 45#include <sys/mount.h> 46#include <net/if.h> 47#include <sys/malloc.h> 48 49#include <sys/sysproto.h> 50 51#include <svr4/svr4.h> 52#include <svr4/svr4_types.h> 53#include <svr4/svr4_util.h> 54#include <svr4/svr4_signal.h> 55#include <svr4/svr4_proto.h> 56#include <svr4/svr4_ioctl.h> 57#include <svr4/svr4_filio.h> 58 59/*#define GROTTY_READ_HACK*/ 60 61int 62svr4_sys_poll(p, uap) 63 struct proc *p; 64 struct svr4_sys_poll_args *uap; 65{ 66 int error; 67 struct poll_args pa; 68 struct pollfd *pfd; 69 int idx = 0, cerr; 70 u_long siz; 71 72 SCARG(&pa, fds) = SCARG(uap, fds); 73 SCARG(&pa, nfds) = SCARG(uap, nfds); 74 SCARG(&pa, timeout) = SCARG(uap, timeout); 75 76 siz = SCARG(uap, nfds) * sizeof(struct pollfd); 77 pfd = (struct pollfd *)malloc(siz, M_TEMP, M_WAITOK); 78 79 error = poll(p, (struct poll_args *)uap); 80 81 if ((cerr = copyin(SCARG(uap, fds), pfd, siz)) != 0) { 82 error = cerr; 83 goto done; 84 } 85 DPRINTF(("poll(%x, %x, %d) = %d\n", SCARG(uap, fds), SCARG(uap, nfds), 86 SCARG(uap, timeout), p->p_retval[0])); 87 88 for (idx = 0; idx < SCARG(uap, nfds); idx++) { 89 /* POLLWRNORM already equals POLLOUT, so we don't worry about that */ 90 if (pfd[idx].revents & (POLLOUT | POLLWRNORM | POLLWRBAND)) 91 pfd[idx].revents |= (POLLOUT | POLLWRNORM | POLLWRBAND); 92 DPRINTF(("pollfd[%d]->fd = %d\n", idx, pfd[idx].fd)); 93 DPRINTF(("pollfd[%d]->events = %x\n", idx, pfd[idx].events)); 94 DPRINTF(("pollfd[%d]->revents = %x\n", idx, pfd[idx].revents)); 95 } 96 if ((cerr = copyout(pfd, SCARG(uap, fds), siz)) != 0) { 97 error = cerr; 98 goto done; /* yeah, I know it's the next line, but this way I won't 99 forget to update it if I add more code */ 100 } 101done: 102 free(pfd, M_TEMP); 103 return error; 104} 105 106#if defined(READ_TEST) 107int 108svr4_sys_read(p, uap) 109 struct proc *p; 110 struct svr4_sys_read_args *uap; 111{ 112 struct read_args ra; 113 struct filedesc *fdp = p->p_fd; 114 struct file *fp; 115 struct socket *so = NULL; 116 int so_state; 117 sigset_t sigmask; 118 int rv; 119 120 SCARG(&ra, fd) = SCARG(uap, fd); 121 SCARG(&ra, buf) = SCARG(uap, buf); 122 SCARG(&ra, nbyte) = SCARG(uap, nbyte); 123 124 if ((fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL) { 125 DPRINTF(("Something fishy with the user-supplied file descriptor...\n")); 126 return EBADF; 127 } 128 129 if (fp->f_type == DTYPE_SOCKET) { 130 so = (struct socket *)fp->f_data; 131 DPRINTF(("fd %d is a socket\n", SCARG(uap, fd))); 132 if (so->so_state & SS_ASYNC) { 133 DPRINTF(("fd %d is an ASYNC socket!\n", SCARG(uap, fd))); 134 } 135 DPRINTF(("Here are its flags: 0x%x\n", so->so_state)); 136#if defined(GROTTY_READ_HACK) 137 so_state = so->so_state; 138 so->so_state &= ~SS_NBIO; 139#endif 140 } 141 142 rv = read(p, &ra); 143 144 DPRINTF(("svr4_read(%d, 0x%0x, %d) = %d\n", 145 SCARG(uap, fd), SCARG(uap, buf), SCARG(uap, nbyte), rv)); 146 if (rv == EAGAIN) { 147 DPRINTF(("sigmask = 0x%x\n", p->p_sigmask)); 148 DPRINTF(("sigignore = 0x%x\n", p->p_sigignore)); 149 DPRINTF(("sigcaught = 0x%x\n", p->p_sigcatch)); 150 DPRINTF(("siglist = 0x%x\n", p->p_siglist)); 151 } 152 153#if defined(GROTTY_READ_HACK) 154 if (so) { /* We've already checked to see if this is a socket */ 155 so->so_state = so_state; 156 } 157#endif 158 159 return(rv); 160} 161#endif /* READ_TEST */ 162 163#if defined(BOGUS) 164int 165svr4_sys_write(p, uap) 166 struct proc *p; 167 struct svr4_sys_write_args *uap; 168{ 169 struct write_args wa; 170 struct filedesc *fdp; 171 struct file *fp; 172 int rv; 173 174 SCARG(&wa, fd) = SCARG(uap, fd); 175 SCARG(&wa, buf) = SCARG(uap, buf); 176 SCARG(&wa, nbyte) = SCARG(uap, nbyte); 177 178 rv = write(p, &wa); 179 180 DPRINTF(("svr4_write(%d, 0x%0x, %d) = %d\n", 181 SCARG(uap, fd), SCARG(uap, buf), SCARG(uap, nbyte), rv)); 182 183 return(rv); 184} 185#endif /* BOGUS */ 186 187int 188svr4_fil_ioctl(fp, p, retval, fd, cmd, data) 189 struct file *fp; 190 struct proc *p; 191 register_t *retval; 192 int fd; 193 u_long cmd; 194 caddr_t data; 195{ 196 int error; 197 int num; 198 struct filedesc *fdp = p->p_fd; 199 200 *retval = 0; 201 202 switch (cmd) { 203 case SVR4_FIOCLEX: 204 fdp->fd_ofileflags[fd] |= UF_EXCLOSE; 205 return 0; 206 207 case SVR4_FIONCLEX: 208 fdp->fd_ofileflags[fd] &= ~UF_EXCLOSE; 209 return 0; 210 211 case SVR4_FIOGETOWN: 212 case SVR4_FIOSETOWN: 213 case SVR4_FIOASYNC: 214 case SVR4_FIONBIO: 215 case SVR4_FIONREAD: 216 if ((error = copyin(data, &num, sizeof(num))) != 0) 217 return error; 218 219 switch (cmd) { 220 case SVR4_FIOGETOWN: cmd = FIOGETOWN; break; 221 case SVR4_FIOSETOWN: cmd = FIOSETOWN; break; 222 case SVR4_FIOASYNC: cmd = FIOASYNC; break; 223 case SVR4_FIONBIO: cmd = FIONBIO; break; 224 case SVR4_FIONREAD: cmd = FIONREAD; break; 225 } 226 227#ifdef SVR4_DEBUG 228 if (cmd == FIOASYNC) DPRINTF(("FIOASYNC\n")); 229#endif 230 error = fo_ioctl(fp, cmd, (caddr_t) &num, p); 231 232 if (error) 233 return error; 234 235 return copyout(&num, data, sizeof(num)); 236 237 default: 238 DPRINTF(("Unknown svr4 filio %lx\n", cmd)); 239 return 0; /* ENOSYS really */ 240 } 241} 242