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33 * @(#)sys_socket.c 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/kern/sys_socket.c,v 1.28.2.2 2001/02/26 04:23:16 jlemon Exp $
35 * $DragonFly: src/sys/kern/sys_socket.c,v 1.10 2006/05/26 00:33:09 dillon Exp $
38 #include <sys/param.h>
39 #include <sys/systm.h>
41 #include <sys/protosw.h>
42 #include <sys/socket.h>
43 #include <sys/socketvar.h>
44 #include <sys/socketops.h>
45 #include <sys/filio.h> /* XXX */
46 #include <sys/sockio.h>
49 #include <sys/filedesc.h>
50 #include <sys/ucred.h>
53 #include <net/route.h>
55 struct fileops socketops = {
58 soo_read, soo_write, soo_ioctl, soo_poll, sokqfilter,
59 soo_stat, soo_close, soo_shutdown
63 * MPALMOSTSAFE - acquires mplock
66 soo_read(struct file *fp, struct uio *uio, struct ucred *cred, int flags)
72 so = (struct socket *)fp->f_data;
73 error = so_pru_soreceive(so, NULL, uio, NULL, NULL, NULL);
79 * MPALMOSTSAFE - acquires mplock
82 soo_write(struct file *fp, struct uio *uio, struct ucred *cred, int flags)
88 so = (struct socket *)fp->f_data;
89 error = so_pru_sosend(so, NULL, uio, NULL, NULL, 0, uio->uio_td);
95 * MPALMOSTSAFE - acquires mplock
98 soo_ioctl(struct file *fp, u_long cmd, caddr_t data, struct ucred *cred)
104 so = (struct socket *)fp->f_data;
109 so->so_state |= SS_NBIO;
111 so->so_state &= ~SS_NBIO;
116 so->so_state |= SS_ASYNC;
117 so->so_rcv.sb_flags |= SB_ASYNC;
118 so->so_snd.sb_flags |= SB_ASYNC;
120 so->so_state &= ~SS_ASYNC;
121 so->so_rcv.sb_flags &= ~SB_ASYNC;
122 so->so_snd.sb_flags &= ~SB_ASYNC;
127 *(int *)data = so->so_rcv.sb_cc;
131 error = fsetown(*(int *)data, &so->so_sigio);
134 *(int *)data = fgetown(so->so_sigio);
138 error = fsetown(-(*(int *)data), &so->so_sigio);
141 *(int *)data = -fgetown(so->so_sigio);
145 *(int *)data = (so->so_state&SS_RCVATMARK) != 0;
150 * Interface/routing/protocol specific ioctls:
151 * interface and routing ioctls should have a
152 * different entry since a socket's unnecessary
154 if (IOCGROUP(cmd) == 'i')
155 error = ifioctl(so, cmd, data, cred);
156 else if (IOCGROUP(cmd) == 'r')
157 error = rtioctl(cmd, data, cred);
159 error = so_pru_control(so, cmd, data, NULL);
167 * MPALMOSTSAFE - acquires mplock
170 soo_poll(struct file *fp, int events, struct ucred *cred)
176 so = (struct socket *)fp->f_data;
177 error = so_pru_sopoll(so, events, cred);
183 * MPALMOSTSAFE - acquires mplock
186 soo_stat(struct file *fp, struct stat *ub, struct ucred *cred)
191 bzero((caddr_t)ub, sizeof (*ub));
192 ub->st_mode = S_IFSOCK;
194 so = (struct socket *)fp->f_data;
196 * If SS_CANTRCVMORE is set, but there's still data left in the
197 * receive buffer, the socket is still readable.
199 if ((so->so_state & SS_CANTRCVMORE) == 0 ||
200 so->so_rcv.sb_cc != 0)
201 ub->st_mode |= S_IRUSR | S_IRGRP | S_IROTH;
202 if ((so->so_state & SS_CANTSENDMORE) == 0)
203 ub->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
204 ub->st_size = so->so_rcv.sb_cc;
205 ub->st_uid = so->so_cred->cr_uid;
206 ub->st_gid = so->so_cred->cr_gid;
207 error = so_pru_sense(so, ub);
213 * MPALMOSTSAFE - acquires mplock
216 soo_close(struct file *fp)
221 fp->f_ops = &badfileops;
223 error = soclose((struct socket *)fp->f_data);
232 * MPALMOSTSAFE - acquires mplock
235 soo_shutdown(struct file *fp, int how)
241 error = soshutdown((struct socket *)fp->f_data, how);