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15 * This product includes software developed by the University of
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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 $
37 #include <sys/param.h>
38 #include <sys/systm.h>
41 #include <sys/protosw.h>
42 #include <sys/signalvar.h>
43 #include <sys/socket.h>
44 #include <sys/socketvar.h>
45 #include <sys/socketops.h>
46 #include <sys/filio.h> /* XXX */
47 #include <sys/sockio.h>
48 #include <sys/vnode.h>
51 #include <sys/filedesc.h>
52 #include <sys/ucred.h>
54 #include <sys/socketvar2.h>
57 #include <net/route.h>
59 struct fileops socketops = {
61 .fo_write = soo_write,
62 .fo_ioctl = soo_ioctl,
63 .fo_kqfilter = sokqfilter,
65 .fo_close = soo_close,
66 .fo_shutdown = soo_shutdown
73 soo_read(struct file *fp, struct uio *uio, struct ucred *cred, int fflags)
79 atomic_set_int(&curthread->td_mpflags, TDF_MP_BATCH_DEMARC);
81 so = (struct socket *)fp->f_data;
83 if (fflags & O_FBLOCKING)
85 else if (fflags & O_FNONBLOCKING)
86 msgflags = MSG_FNONBLOCKING;
87 else if (fp->f_flag & FNONBLOCK)
88 msgflags = MSG_FNONBLOCKING;
92 error = so_pru_soreceive(so, NULL, uio, NULL, NULL, &msgflags);
100 soo_write(struct file *fp, struct uio *uio, struct ucred *cred, int fflags)
106 so = (struct socket *)fp->f_data;
108 if (fflags & O_FBLOCKING)
110 else if (fflags & O_FNONBLOCKING)
111 msgflags = MSG_FNONBLOCKING;
112 else if (fp->f_flag & FNONBLOCK)
113 msgflags = MSG_FNONBLOCKING;
117 error = so_pru_sosend(so, NULL, uio, NULL, NULL, msgflags, uio->uio_td);
118 if (error == EPIPE && !(fflags & MSG_NOSIGNAL) &&
119 !(so->so_options & SO_NOSIGPIPE))
120 lwpsignal(uio->uio_td->td_proc, uio->uio_td->td_lwp, SIGPIPE);
128 soo_ioctl(struct file *fp, u_long cmd, caddr_t data,
129 struct ucred *cred, struct sysmsg *msg)
134 so = (struct socket *)fp->f_data;
139 sosetstate(so, SS_ASYNC);
140 atomic_set_int(&so->so_rcv.ssb_flags, SSB_ASYNC);
141 atomic_set_int(&so->so_snd.ssb_flags, SSB_ASYNC);
143 soclrstate(so, SS_ASYNC);
144 atomic_clear_int(&so->so_rcv.ssb_flags, SSB_ASYNC);
145 atomic_clear_int(&so->so_snd.ssb_flags, SSB_ASYNC);
150 *(int *)data = so->so_rcv.ssb_cc;
154 error = fsetown(*(int *)data, &so->so_sigio);
157 *(int *)data = fgetown(&so->so_sigio);
161 error = fsetown(-(*(int *)data), &so->so_sigio);
164 *(int *)data = -fgetown(&so->so_sigio);
168 *(int *)data = (so->so_state&SS_RCVATMARK) != 0;
173 * Interface/routing/protocol specific ioctls:
174 * interface and routing ioctls should have a
175 * different entry since a socket's unnecessary
177 if (IOCGROUP(cmd) == 'i') {
178 error = ifioctl(so, cmd, data, cred);
179 } else if (IOCGROUP(cmd) == 'r') {
180 error = rtioctl(cmd, data, cred);
182 error = so_pru_control_direct(so, cmd, data, NULL);
193 soo_stat(struct file *fp, struct stat *ub, struct ucred *cred)
198 bzero((caddr_t)ub, sizeof (*ub));
199 ub->st_mode = S_IFSOCK;
200 so = (struct socket *)fp->f_data;
203 * If SS_CANTRCVMORE is set, but there's still data left in the
204 * receive buffer, the socket is still readable.
206 if ((so->so_state & SS_CANTRCVMORE) == 0 ||
207 so->so_rcv.ssb_cc != 0)
208 ub->st_mode |= S_IRUSR | S_IRGRP | S_IROTH;
209 if ((so->so_state & SS_CANTSENDMORE) == 0)
210 ub->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
211 ub->st_size = so->so_rcv.ssb_cc;
212 ub->st_uid = so->so_cred->cr_uid;
213 ub->st_gid = so->so_cred->cr_gid;
214 error = so_pru_sense(so, ub);
222 soo_close(struct file *fp)
226 fp->f_ops = &badfileops;
228 error = soclose((struct socket *)fp->f_data, fp->f_flag);
239 soo_shutdown(struct file *fp, int how)
244 error = soshutdown((struct socket *)fp->f_data, how);