/* $OpenBSD: sys_socket.c,v 1.19 2014/07/13 15:52:38 tedu Exp $ */ /* $NetBSD: sys_socket.c,v 1.13 1995/08/12 23:59:09 mycroft Exp $ */ /* * Copyright (c) 1982, 1986, 1990, 1993 * The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * @(#)sys_socket.c 8.1 (Berkeley) 6/10/93 */ #include #include #include #include #include #include #include #include #include #include #include #include #include struct fileops socketops = { soo_read, soo_write, soo_ioctl, soo_poll, soo_kqfilter, soo_stat, soo_close }; /* ARGSUSED */ int soo_read(struct file *fp, off_t *poff, struct uio *uio, struct ucred *cred) { return (soreceive((struct socket *)fp->f_data, (struct mbuf **)0, uio, (struct mbuf **)0, (struct mbuf **)0, (int *)0, (socklen_t)0)); } /* ARGSUSED */ int soo_write(struct file *fp, off_t *poff, struct uio *uio, struct ucred *cred) { return (sosend((struct socket *)fp->f_data, (struct mbuf *)0, uio, (struct mbuf *)0, (struct mbuf *)0, 0)); } int soo_ioctl(struct file *fp, u_long cmd, caddr_t data, struct proc *p) { struct socket *so = (struct socket *)fp->f_data; switch (cmd) { case FIONBIO: if (*(int *)data) so->so_state |= SS_NBIO; else so->so_state &= ~SS_NBIO; return (0); case FIOASYNC: if (*(int *)data) { so->so_state |= SS_ASYNC; so->so_rcv.sb_flags |= SB_ASYNC; so->so_snd.sb_flags |= SB_ASYNC; } else { so->so_state &= ~SS_ASYNC; so->so_rcv.sb_flags &= ~SB_ASYNC; so->so_snd.sb_flags &= ~SB_ASYNC; } return (0); case FIONREAD: *(int *)data = so->so_rcv.sb_datacc; return (0); case SIOCSPGRP: so->so_pgid = *(int *)data; so->so_siguid = p->p_ucred->cr_ruid; so->so_sigeuid = p->p_ucred->cr_uid; return (0); case SIOCGPGRP: *(int *)data = so->so_pgid; return (0); case SIOCATMARK: *(int *)data = (so->so_state&SS_RCVATMARK) != 0; return (0); } /* * Interface/routing/protocol specific ioctls: * interface and routing ioctls should have a * different entry since a socket's unnecessary */ if (IOCGROUP(cmd) == 'i') return (ifioctl(so, cmd, data, p)); if (IOCGROUP(cmd) == 'r') return (rtioctl(cmd, data, p)); return ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL, (struct mbuf *)cmd, (struct mbuf *)data, (struct mbuf *)0, p)); } int soo_poll(struct file *fp, int events, struct proc *p) { struct socket *so = fp->f_data; int revents = 0; int s = splsoftnet(); if (events & (POLLIN | POLLRDNORM)) { if (soreadable(so)) revents |= events & (POLLIN | POLLRDNORM); } /* NOTE: POLLHUP and POLLOUT/POLLWRNORM are mutually exclusive */ if (so->so_state & SS_ISDISCONNECTED) { revents |= POLLHUP; } else if (events & (POLLOUT | POLLWRNORM)) { if (sowriteable(so)) revents |= events & (POLLOUT | POLLWRNORM); } if (events & (POLLPRI | POLLRDBAND)) { if (so->so_oobmark || (so->so_state & SS_RCVATMARK)) revents |= events & (POLLPRI | POLLRDBAND); } if (revents == 0) { if (events & (POLLIN | POLLPRI | POLLRDNORM | POLLRDBAND)) { selrecord(p, &so->so_rcv.sb_sel); so->so_rcv.sb_flagsintr |= SB_SEL; } if (events & (POLLOUT | POLLWRNORM)) { selrecord(p, &so->so_snd.sb_sel); so->so_snd.sb_flagsintr |= SB_SEL; } } splx(s); return (revents); } int soo_stat(struct file *fp, struct stat *ub, struct proc *p) { struct socket *so = fp->f_data; memset(ub, 0, sizeof (*ub)); ub->st_mode = S_IFSOCK; if ((so->so_state & SS_CANTRCVMORE) == 0 || so->so_rcv.sb_cc != 0) ub->st_mode |= S_IRUSR | S_IRGRP | S_IROTH; if ((so->so_state & SS_CANTSENDMORE) == 0) ub->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH; ub->st_uid = so->so_euid; ub->st_gid = so->so_egid; (void) ((*so->so_proto->pr_usrreq)(so, PRU_SENSE, (struct mbuf *)ub, NULL, NULL, p)); return (0); } /* ARGSUSED */ int soo_close(struct file *fp, struct proc *p) { int error = 0; if (fp->f_data) error = soclose(fp->f_data); fp->f_data = 0; return (error); }