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29 * @(#)sys_socket.c 8.1 (Berkeley) 6/10/93
30 * $FreeBSD: src/sys/kern/sys_socket.c,v 1.28.2.2 2001/02/26 04:23:16 jlemon Exp $
33 #include <sys/param.h>
34 #include <sys/systm.h>
37 #include <sys/protosw.h>
38 #include <sys/signalvar.h>
39 #include <sys/socket.h>
40 #include <sys/socketvar.h>
41 #include <sys/socketops.h>
42 #include <sys/filio.h> /* XXX */
43 #include <sys/sockio.h>
44 #include <sys/vnode.h>
47 #include <sys/filedesc.h>
48 #include <sys/ucred.h>
50 #include <sys/socketvar2.h>
53 #include <net/if_var.h>
54 #include <net/route.h>
56 struct fileops socketops = {
58 .fo_write = soo_write,
59 .fo_ioctl = soo_ioctl,
60 .fo_kqfilter = sokqfilter,
62 .fo_close = soo_close,
63 .fo_shutdown = soo_shutdown
70 soo_read(struct file *fp, struct uio *uio, struct ucred *cred, int fflags)
76 atomic_set_int(&curthread->td_mpflags, TDF_MP_BATCH_DEMARC);
78 so = (struct socket *)fp->f_data;
80 if (fflags & O_FBLOCKING)
82 else if (fflags & O_FNONBLOCKING)
83 msgflags = MSG_FNONBLOCKING;
84 else if (fp->f_flag & FNONBLOCK)
85 msgflags = MSG_FNONBLOCKING;
89 error = so_pru_soreceive(so, NULL, uio, NULL, NULL, &msgflags);
97 soo_write(struct file *fp, struct uio *uio, struct ucred *cred, int fflags)
103 so = (struct socket *)fp->f_data;
105 if (fflags & O_FBLOCKING)
107 else if (fflags & O_FNONBLOCKING)
108 msgflags = MSG_FNONBLOCKING;
109 else if (fp->f_flag & FNONBLOCK)
110 msgflags = MSG_FNONBLOCKING;
114 error = so_pru_sosend(so, NULL, uio, NULL, NULL, msgflags, uio->uio_td);
115 if (error == EPIPE && !(fflags & MSG_NOSIGNAL) &&
116 !(so->so_options & SO_NOSIGPIPE) &&
117 uio->uio_td->td_lwp) {
118 lwpsignal(uio->uio_td->td_proc, uio->uio_td->td_lwp, SIGPIPE);
127 soo_ioctl(struct file *fp, u_long cmd, caddr_t data,
128 struct ucred *cred, struct sysmsg *msg)
133 so = (struct socket *)fp->f_data;
141 sosetstate(so, SS_ASYNC);
142 atomic_set_int(&so->so_rcv.ssb_flags, SSB_ASYNC);
143 atomic_set_int(&so->so_snd.ssb_flags, SSB_ASYNC);
145 soclrstate(so, SS_ASYNC);
146 atomic_clear_int(&so->so_rcv.ssb_flags, SSB_ASYNC);
147 atomic_clear_int(&so->so_snd.ssb_flags, SSB_ASYNC);
152 *(int *)data = so->so_rcv.ssb_cc;
156 error = fsetown(*(int *)data, &so->so_sigio);
159 *(int *)data = fgetown(&so->so_sigio);
163 error = fsetown(-(*(int *)data), &so->so_sigio);
166 *(int *)data = -fgetown(&so->so_sigio);
170 *(int *)data = (so->so_state&SS_RCVATMARK) != 0;
175 * Interface/routing/protocol specific ioctls:
176 * interface and routing ioctls should have a
177 * different entry since a socket's unnecessary
179 if (IOCGROUP(cmd) == 'i') {
180 error = ifioctl(so, cmd, data, cred);
181 } else if (IOCGROUP(cmd) == 'r') {
182 error = rtioctl(cmd, data, cred);
184 error = so_pru_control_direct(so, cmd, data, NULL);
195 soo_stat(struct file *fp, struct stat *ub, struct ucred *cred)
200 bzero((caddr_t)ub, sizeof (*ub));
201 ub->st_mode = S_IFSOCK;
202 so = (struct socket *)fp->f_data;
205 * If SS_CANTRCVMORE is set, but there's still data left in the
206 * receive buffer, the socket is still readable.
208 if ((so->so_state & SS_CANTRCVMORE) == 0 ||
209 so->so_rcv.ssb_cc != 0)
210 ub->st_mode |= S_IRUSR | S_IRGRP | S_IROTH;
211 if ((so->so_state & SS_CANTSENDMORE) == 0)
212 ub->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
213 ub->st_size = so->so_rcv.ssb_cc;
214 ub->st_uid = so->so_cred->cr_uid;
215 ub->st_gid = so->so_cred->cr_gid;
216 ub->st_ino = so->so_inum;
217 error = so_pru_sense(so, ub);
226 soo_close(struct file *fp)
230 fp->f_ops = &badfileops;
232 error = soclose((struct socket *)fp->f_data, fp->f_flag);
243 soo_shutdown(struct file *fp, int how)
248 error = soshutdown((struct socket *)fp->f_data, how);