![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to sys_socket.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Apple XNU] / XNU / bsd / kern|
Return to sys_socket.c CVS log | Up to [Apple XNU] / XNU / bsd / kern |
1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * Copyright (c) 1982, 1986, 1990, 1993
24: * The Regents of the University of California. All rights reserved.
25: *
26: * Redistribution and use in source and binary forms, with or without
27: * modification, are permitted provided that the following conditions
28: * are met:
29: * 1. Redistributions of source code must retain the above copyright
30: * notice, this list of conditions and the following disclaimer.
31: * 2. Redistributions in binary form must reproduce the above copyright
32: * notice, this list of conditions and the following disclaimer in the
33: * documentation and/or other materials provided with the distribution.
34: * 3. All advertising materials mentioning features or use of this software
35: * must display the following acknowledgement:
36: * This product includes software developed by the University of
37: * California, Berkeley and its contributors.
38: * 4. Neither the name of the University nor the names of its contributors
39: * may be used to endorse or promote products derived from this software
40: * without specific prior written permission.
41: *
42: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
43: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
44: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
45: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
46: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
47: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
48: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
50: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
51: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52: * SUCH DAMAGE.
53: *
54: * @(#)sys_socket.c 8.1 (Berkeley) 6/10/93
55: */
56:
57: #include <sys/param.h>
58: #include <sys/systm.h>
59: #include <sys/file.h>
60: #include <sys/protosw.h>
61: #include <sys/socket.h>
62: #include <sys/socketvar.h>
63: #include <sys/filio.h> /* XXX */
64: #include <sys/sockio.h>
65: #include <sys/stat.h>
66: #include <sys/uio.h>
67: #include <sys/filedesc.h>
68:
69: #include <net/if.h>
70: #include <net/route.h>
71:
72: int soo_read __P((struct file *fp, struct uio *uio,
73: struct ucred *cred));
74: int soo_write __P((struct file *fp, struct uio *uio,
75: struct ucred *cred));
76: int soo_close __P((struct file *fp, struct proc *p));
77:
78: int soo_select __P((struct file *fp, int which, struct proc *p));
79:
80: struct fileops socketops =
81: { soo_read, soo_write, soo_ioctl, soo_select, soo_close };
82:
83: /* ARGSUSED */
84: int
85: soo_read(fp, uio, cred)
86: struct file *fp;
87: struct uio *uio;
88: struct ucred *cred;
89: {
90: struct socket *so = (struct socket *)fp->f_data;
91: struct kextcb *kp;
92: int (*fsoreceive) __P((struct socket *so,
93: struct sockaddr **paddr,
94: struct uio *uio, struct mbuf **mp0,
95: struct mbuf **controlp, int *flagsp));
96:
97: fsoreceive = so->so_proto->pr_usrreqs->pru_soreceive;
98: if (fsoreceive != soreceive)
99: { kp = sotokextcb(so);
100: while (kp)
101: { if (kp->e_soif && kp->e_soif->sf_soreceive)
102: (*kp->e_soif->sf_soreceive)(so, 0, &uio,
103: 0, 0, 0, kp);
104: kp = kp->e_next;
105: }
106:
107: }
108: return (*fsoreceive)(so, 0, uio, 0, 0, 0);
109: }
110:
111: /* ARGSUSED */
112: int
113: soo_write(fp, uio, cred)
114: struct file *fp;
115: struct uio *uio;
116: struct ucred *cred;
117: {
118: struct socket *so = (struct socket *)fp->f_data;
119: int (*fsosend) __P((struct socket *so, struct sockaddr *addr,
120: struct uio *uio, struct mbuf *top,
121: struct mbuf *control, int flags));
122: struct kextcb *kp;
123:
124: fsosend = so->so_proto->pr_usrreqs->pru_sosend;
125: if (fsosend != sosend)
126: { kp = sotokextcb(so);
127: while (kp)
128: { if (kp->e_soif && kp->e_soif->sf_sosend)
129: (*kp->e_soif->sf_sosend)(so, 0, &uio,
130: 0, 0, 0, kp);
131: kp = kp->e_next;
132: }
133: }
134:
135: return (*fsosend)(so, 0, uio, 0, 0, 0);
136: }
137:
138: int
139: soo_ioctl(fp, cmd, data, p)
140: struct file *fp;
141: u_long cmd;
142: register caddr_t data;
143: struct proc *p;
144: {
145: register struct socket *so = (struct socket *)fp->f_data;
146:
147: struct sockopt sopt;
148: struct kextcb *kp;
149:
150: kp = sotokextcb(so);
151: sopt.sopt_level = cmd;
152: sopt.sopt_name = (int)data;
153: sopt.sopt_p = p;
154: while (kp)
155: { if (kp->e_soif && kp->e_soif->sf_socontrol)
156: (*kp->e_soif->sf_socontrol)(so, &sopt, kp);
157: kp = kp->e_next;
158: }
159:
160: switch (cmd) {
161:
162: case FIONBIO:
163: if (*(int *)data)
164: so->so_state |= SS_NBIO;
165: else
166: so->so_state &= ~SS_NBIO;
167: return (0);
168:
169: case FIOASYNC:
170: if (*(int *)data) {
171: so->so_state |= SS_ASYNC;
172: so->so_rcv.sb_flags |= SB_ASYNC;
173: so->so_snd.sb_flags |= SB_ASYNC;
174: } else {
175: so->so_state &= ~SS_ASYNC;
176: so->so_rcv.sb_flags &= ~SB_ASYNC;
177: so->so_snd.sb_flags &= ~SB_ASYNC;
178: }
179: return (0);
180:
181: case FIONREAD:
182: *(int *)data = so->so_rcv.sb_cc;
183: return (0);
184:
185: case SIOCSPGRP:
186: so->so_pgid = *(int *)data;
187: return (0);
188:
189: case SIOCGPGRP:
190: *(int *)data = so->so_pgid;
191: return (0);
192:
193: case SIOCATMARK:
194: *(int *)data = (so->so_state&SS_RCVATMARK) != 0;
195: return (0);
196: case SIOCSETOT: {
197: /*
198: * Set socket level options here and then call protocol
199: * specific routine.
200: */
201: struct socket *cloned_so = NULL;
202: int cloned_fd = *(int *)data;
203: int error = 0;
204:
205: /* let's make sure it's either -1 or a valid file descriptor */
206: if (cloned_fd != -1) {
207: struct file *cloned_fp;
208: error = getsock(p->p_fd, cloned_fd, &cloned_fp);
209: if (error)
210: return (error);
211: cloned_so = (struct socket *)cloned_fp->f_data;
212: }
213:
214: /* Always set socket non-blocking for OT */
215: so->so_state |= SS_NBIO;
216: so->so_options |= SO_DONTTRUNC | SO_WANTMORE;
217:
218: if (cloned_so && so != cloned_so) {
219: /* Flags options */
220: so->so_options |= cloned_so->so_options;
221:
222: /* SO_LINGER */
223: if (so->so_options & SO_LINGER)
224: so->so_linger = cloned_so->so_linger;
225:
226: /* SO_SNDBUF, SO_RCVBUF */
227: if (sbreserve(&so->so_snd, cloned_so->so_snd.sb_hiwat) == 0) {
228: error = ENOBUFS;
229: return (error);
230: }
231: if (sbreserve(&so->so_rcv, cloned_so->so_rcv.sb_hiwat) == 0) {
232: error = ENOBUFS;
233: return (error);
234: }
235:
236: /* SO_SNDLOWAT, SO_RCVLOWAT */
237: so->so_snd.sb_lowat =
238: (cloned_so->so_snd.sb_lowat > so->so_snd.sb_hiwat) ?
239: so->so_snd.sb_hiwat : cloned_so->so_snd.sb_lowat;
240: so->so_rcv.sb_lowat =
241: (cloned_so->so_rcv.sb_lowat > so->so_rcv.sb_hiwat) ?
242: so->so_rcv.sb_hiwat : cloned_so->so_rcv.sb_lowat;
243:
244: /* SO_SNDTIMEO, SO_RCVTIMEO */
245: so->so_snd.sb_timeo = cloned_so->so_snd.sb_timeo;
246: so->so_rcv.sb_timeo = cloned_so->so_rcv.sb_timeo;
247: }
248:
249: error = (*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p);
250: /* Just ignore protocols that do not understand it */
251: if (error == EOPNOTSUPP)
252: error = 0;
253: return (error);
254: }
255: }
256: /*
257: * Interface/routing/protocol specific ioctls:
258: * interface and routing ioctls should have a
259: * different entry since a socket's unnecessary
260: */
261: if (IOCGROUP(cmd) == 'i')
262: return (ifioctl(so, cmd, data, p));
263: if (IOCGROUP(cmd) == 'r')
264: return (rtioctl(cmd, data, p));
265: return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p));
266: }
267:
268: int
269: soo_select(fp, which, p)
270: struct file *fp;
271: int which;
272: struct proc *p;
273: {
274: register struct socket *so = (struct socket *)fp->f_data;
275: register int s = splnet();
276:
277: switch (which) {
278:
279: case FREAD:
280: if (soreadable(so)) {
281: splx(s);
282: return (1);
283: }
284: selrecord(p, &so->so_rcv.sb_sel);
285: so->so_rcv.sb_flags |= SB_SEL;
286: break;
287:
288: case FWRITE:
289: if (sowriteable(so)) {
290: splx(s);
291: return (1);
292: }
293: selrecord(p, &so->so_snd.sb_sel);
294: so->so_snd.sb_flags |= SB_SEL;
295: break;
296:
297: case 0:
298: if (so->so_oobmark || (so->so_state & SS_RCVATMARK)) {
299: splx(s);
300: return (1);
301: }
302: selrecord(p, &so->so_rcv.sb_sel);
303: so->so_rcv.sb_flags |= SB_SEL;
304: break;
305: }
306: splx(s);
307: return (0);
308: }
309:
310:
311: int
312: soo_stat(so, ub)
313: register struct socket *so;
314: register struct stat *ub;
315: {
316:
317: bzero((caddr_t)ub, sizeof (*ub));
318: ub->st_mode = S_IFSOCK;
319: return ((*so->so_proto->pr_usrreqs->pru_sense)(so, ub));
320: }
321:
322: /* ARGSUSED */
323: int
324: soo_close(fp, p)
325: struct file *fp;
326: struct proc *p;
327: {
328: int error = 0;
329:
330: if (fp->f_data)
331: error = soclose((struct socket *)fp->f_data);
332: fp->f_data = 0;
333: return (error);
334: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.