/* $OpenBSD: sys_socket.c,v 1.54 2022/09/02 13:12:31 mvs 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 const struct fileops socketops = { .fo_read = soo_read, .fo_write = soo_write, .fo_ioctl = soo_ioctl, .fo_kqfilter = soo_kqfilter, .fo_stat = soo_stat, .fo_close = soo_close }; int soo_read(struct file *fp, struct uio *uio, int fflags) { struct socket *so = (struct socket *)fp->f_data; int flags = 0; if (fp->f_flag & FNONBLOCK) flags |= MSG_DONTWAIT; return (soreceive(so, NULL, uio, NULL, NULL, &flags, 0)); } int soo_write(struct file *fp, struct uio *uio, int fflags) { struct socket *so = (struct socket *)fp->f_data; int flags = 0; if (fp->f_flag & FNONBLOCK) flags |= MSG_DONTWAIT; return (sosend(so, NULL, uio, NULL, NULL, flags)); } int soo_ioctl(struct file *fp, u_long cmd, caddr_t data, struct proc *p) { struct socket *so = (struct socket *)fp->f_data; int error = 0; switch (cmd) { case FIONBIO: break; case FIOASYNC: solock(so); if (*(int *)data) { so->so_rcv.sb_flags |= SB_ASYNC; so->so_snd.sb_flags |= SB_ASYNC; } else { so->so_rcv.sb_flags &= ~SB_ASYNC; so->so_snd.sb_flags &= ~SB_ASYNC; } sounlock(so); break; case FIONREAD: *(int *)data = so->so_rcv.sb_datacc; break; case FIOSETOWN: case SIOCSPGRP: case TIOCSPGRP: error = sigio_setown(&so->so_sigio, cmd, data); break; case FIOGETOWN: case SIOCGPGRP: case TIOCGPGRP: sigio_getown(&so->so_sigio, cmd, data); break; case SIOCATMARK: *(int *)data = (so->so_state&SS_RCVATMARK) != 0; break; default: /* * Interface/routing/protocol specific ioctls: * interface and routing ioctls should have a * different entry since a socket's unnecessary */ if (IOCGROUP(cmd) == 'i') { KERNEL_LOCK(); error = ifioctl(so, cmd, data, p); KERNEL_UNLOCK(); return (error); } if (IOCGROUP(cmd) == 'r') return (EOPNOTSUPP); KERNEL_LOCK(); error = pru_control(so, cmd, data, NULL); KERNEL_UNLOCK(); break; } return (error); } 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; solock(so); 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)pru_sense(so, ub); sounlock(so); return (0); } int soo_close(struct file *fp, struct proc *p) { int flags, error = 0; if (fp->f_data) { flags = (fp->f_flag & FNONBLOCK) ? MSG_DONTWAIT : 0; error = soclose(fp->f_data, flags); } fp->f_data = NULL; return (error); }