Commit | Line | Data |
---|---|---|
da7c5cc6 | 1 | /* |
ec54f0cc KB |
2 | * Copyright (c) 1982, 1986, 1988, 1990, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
da7c5cc6 | 4 | * |
dbf0c423 | 5 | * %sccs.include.redist.c% |
5b519e94 | 6 | * |
ec54f0cc | 7 | * @(#)uipc_socket.c 8.1 (Berkeley) %G% |
da7c5cc6 | 8 | */ |
ce9d8eb4 | 9 | |
38a01dbe KB |
10 | #include <sys/param.h> |
11 | #include <sys/systm.h> | |
12 | #include <sys/proc.h> | |
13 | #include <sys/file.h> | |
14 | #include <sys/malloc.h> | |
15 | #include <sys/mbuf.h> | |
16 | #include <sys/domain.h> | |
17 | #include <sys/kernel.h> | |
18 | #include <sys/protosw.h> | |
19 | #include <sys/socket.h> | |
20 | #include <sys/socketvar.h> | |
21 | #include <sys/resourcevar.h> | |
ce9d8eb4 | 22 | |
ce9d8eb4 | 23 | /* |
cf012934 BJ |
24 | * Socket operation routines. |
25 | * These routines are called by the routines in | |
26 | * sys_socket.c or from a system process, and | |
27 | * implement the semantics of socket operations by | |
28 | * switching out to the protocol specific routines. | |
ce9d8eb4 | 29 | */ |
a8d3bf7f | 30 | /*ARGSUSED*/ |
98422daa | 31 | socreate(dom, aso, type, proto) |
39f2b629 | 32 | int dom; |
ce9d8eb4 | 33 | struct socket **aso; |
88a7a62a SL |
34 | register int type; |
35 | int proto; | |
ce9d8eb4 | 36 | { |
dff5c020 | 37 | struct proc *p = curproc; /* XXX */ |
ce9d8eb4 BJ |
38 | register struct protosw *prp; |
39 | register struct socket *so; | |
88a7a62a | 40 | register int error; |
cc15ab5d | 41 | |
cc15ab5d | 42 | if (proto) |
8c0650b0 | 43 | prp = pffindproto(dom, proto, type); |
cc15ab5d | 44 | else |
4f083fd7 | 45 | prp = pffindtype(dom, type); |
2b6d14b8 | 46 | if (prp == 0 || prp->pr_usrreq == 0) |
cc15ab5d | 47 | return (EPROTONOSUPPORT); |
cf012934 BJ |
48 | if (prp->pr_type != type) |
49 | return (EPROTOTYPE); | |
a2aebb63 KS |
50 | MALLOC(so, struct socket *, sizeof(*so), M_SOCKET, M_WAIT); |
51 | bzero((caddr_t)so, sizeof(*so)); | |
4f083fd7 | 52 | so->so_type = type; |
dff5c020 | 53 | if (p->p_ucred->cr_uid == 0) |
62364f0e | 54 | so->so_state = SS_PRIV; |
ce9d8eb4 | 55 | so->so_proto = prp; |
88a7a62a SL |
56 | error = |
57 | (*prp->pr_usrreq)(so, PRU_ATTACH, | |
8c0650b0 | 58 | (struct mbuf *)0, (struct mbuf *)proto, (struct mbuf *)0); |
b91acce4 | 59 | if (error) { |
90aaea96 | 60 | so->so_state |= SS_NOFDREF; |
de48daf3 | 61 | sofree(so); |
cc15ab5d | 62 | return (error); |
ce9d8eb4 BJ |
63 | } |
64 | *aso = so; | |
65 | return (0); | |
66 | } | |
67 | ||
98422daa | 68 | sobind(so, nam) |
cf012934 BJ |
69 | struct socket *so; |
70 | struct mbuf *nam; | |
cf012934 BJ |
71 | { |
72 | int s = splnet(); | |
73 | int error; | |
74 | ||
7c4ec3aa MK |
75 | error = |
76 | (*so->so_proto->pr_usrreq)(so, PRU_BIND, | |
88a7a62a | 77 | (struct mbuf *)0, nam, (struct mbuf *)0); |
cf012934 BJ |
78 | splx(s); |
79 | return (error); | |
80 | } | |
81 | ||
82 | solisten(so, backlog) | |
88a7a62a | 83 | register struct socket *so; |
cf012934 BJ |
84 | int backlog; |
85 | { | |
88a7a62a | 86 | int s = splnet(), error; |
cf012934 | 87 | |
88a7a62a SL |
88 | error = |
89 | (*so->so_proto->pr_usrreq)(so, PRU_LISTEN, | |
90 | (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0); | |
cf012934 BJ |
91 | if (error) { |
92 | splx(s); | |
93 | return (error); | |
94 | } | |
629e51da | 95 | if (so->so_q == 0) |
cf012934 | 96 | so->so_options |= SO_ACCEPTCONN; |
cf012934 BJ |
97 | if (backlog < 0) |
98 | backlog = 0; | |
2557c1fc | 99 | so->so_qlimit = min(backlog, SOMAXCONN); |
9e87be97 | 100 | splx(s); |
cf012934 BJ |
101 | return (0); |
102 | } | |
103 | ||
ae921915 | 104 | sofree(so) |
88a7a62a | 105 | register struct socket *so; |
ae921915 BJ |
106 | { |
107 | ||
bb73a14e MK |
108 | if (so->so_pcb || (so->so_state & SS_NOFDREF) == 0) |
109 | return; | |
90aaea96 BJ |
110 | if (so->so_head) { |
111 | if (!soqremque(so, 0) && !soqremque(so, 1)) | |
112 | panic("sofree dq"); | |
113 | so->so_head = 0; | |
114 | } | |
4ad99bae | 115 | sbrelease(&so->so_snd); |
88a7a62a | 116 | sorflush(so); |
a2aebb63 | 117 | FREE(so, M_SOCKET); |
ae921915 BJ |
118 | } |
119 | ||
92a533e6 | 120 | /* |
cc15ab5d BJ |
121 | * Close a socket on last file table reference removal. |
122 | * Initiate disconnect if connected. | |
123 | * Free socket when disconnect complete. | |
92a533e6 | 124 | */ |
88a7a62a | 125 | soclose(so) |
92a533e6 | 126 | register struct socket *so; |
92a533e6 | 127 | { |
cc15ab5d | 128 | int s = splnet(); /* conservative */ |
e58562f2 | 129 | int error = 0; |
cc15ab5d | 130 | |
90aaea96 | 131 | if (so->so_options & SO_ACCEPTCONN) { |
629e51da | 132 | while (so->so_q0) |
26225f25 | 133 | (void) soabort(so->so_q0); |
629e51da | 134 | while (so->so_q) |
26225f25 | 135 | (void) soabort(so->so_q); |
90aaea96 | 136 | } |
cc15ab5d BJ |
137 | if (so->so_pcb == 0) |
138 | goto discard; | |
139 | if (so->so_state & SS_ISCONNECTED) { | |
140 | if ((so->so_state & SS_ISDISCONNECTING) == 0) { | |
dedd6629 | 141 | error = sodisconnect(so); |
88a7a62a SL |
142 | if (error) |
143 | goto drop; | |
cc15ab5d | 144 | } |
98422daa | 145 | if (so->so_options & SO_LINGER) { |
b8acc34d | 146 | if ((so->so_state & SS_ISDISCONNECTING) && |
88a7a62a SL |
147 | (so->so_state & SS_NBIO)) |
148 | goto drop; | |
b8acc34d | 149 | while (so->so_state & SS_ISCONNECTED) |
83866636 MK |
150 | if (error = tsleep((caddr_t)&so->so_timeo, |
151 | PSOCK | PCATCH, netcls, so->so_linger)) | |
152 | break; | |
72857acf | 153 | } |
cc15ab5d | 154 | } |
89900a09 | 155 | drop: |
37c0974a | 156 | if (so->so_pcb) { |
88a7a62a SL |
157 | int error2 = |
158 | (*so->so_proto->pr_usrreq)(so, PRU_DETACH, | |
159 | (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0); | |
160 | if (error == 0) | |
161 | error = error2; | |
37c0974a | 162 | } |
cc15ab5d | 163 | discard: |
26225f25 SL |
164 | if (so->so_state & SS_NOFDREF) |
165 | panic("soclose: NOFDREF"); | |
90aaea96 | 166 | so->so_state |= SS_NOFDREF; |
4ad99bae | 167 | sofree(so); |
cc15ab5d | 168 | splx(s); |
88a7a62a | 169 | return (error); |
92a533e6 BJ |
170 | } |
171 | ||
26225f25 SL |
172 | /* |
173 | * Must be called at splnet... | |
174 | */ | |
175 | soabort(so) | |
176 | struct socket *so; | |
177 | { | |
26225f25 | 178 | |
88a7a62a SL |
179 | return ( |
180 | (*so->so_proto->pr_usrreq)(so, PRU_ABORT, | |
181 | (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0)); | |
92a533e6 BJ |
182 | } |
183 | ||
98422daa | 184 | soaccept(so, nam) |
88a7a62a | 185 | register struct socket *so; |
cf012934 | 186 | struct mbuf *nam; |
2b4b57cd BJ |
187 | { |
188 | int s = splnet(); | |
189 | int error; | |
190 | ||
26225f25 SL |
191 | if ((so->so_state & SS_NOFDREF) == 0) |
192 | panic("soaccept: !NOFDREF"); | |
98422daa | 193 | so->so_state &= ~SS_NOFDREF; |
cf012934 | 194 | error = (*so->so_proto->pr_usrreq)(so, PRU_ACCEPT, |
88a7a62a | 195 | (struct mbuf *)0, nam, (struct mbuf *)0); |
2b4b57cd BJ |
196 | splx(s); |
197 | return (error); | |
198 | } | |
199 | ||
98422daa | 200 | soconnect(so, nam) |
88a7a62a | 201 | register struct socket *so; |
cf012934 | 202 | struct mbuf *nam; |
ce9d8eb4 | 203 | { |
7bcf9d13 | 204 | int s; |
cc15ab5d | 205 | int error; |
ce9d8eb4 | 206 | |
7bcf9d13 MK |
207 | if (so->so_options & SO_ACCEPTCONN) |
208 | return (EOPNOTSUPP); | |
209 | s = splnet(); | |
de2c74a5 MK |
210 | /* |
211 | * If protocol is connection-based, can only connect once. | |
212 | * Otherwise, if connected, try to disconnect first. | |
213 | * This allows user to disconnect by connecting to, e.g., | |
214 | * a null address. | |
215 | */ | |
216 | if (so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING) && | |
217 | ((so->so_proto->pr_flags & PR_CONNREQUIRED) || | |
218 | (error = sodisconnect(so)))) | |
cc15ab5d | 219 | error = EISCONN; |
de2c74a5 MK |
220 | else |
221 | error = (*so->so_proto->pr_usrreq)(so, PRU_CONNECT, | |
222 | (struct mbuf *)0, nam, (struct mbuf *)0); | |
cc15ab5d BJ |
223 | splx(s); |
224 | return (error); | |
ce9d8eb4 BJ |
225 | } |
226 | ||
88a7a62a SL |
227 | soconnect2(so1, so2) |
228 | register struct socket *so1; | |
229 | struct socket *so2; | |
230 | { | |
231 | int s = splnet(); | |
232 | int error; | |
233 | ||
5a48956d SL |
234 | error = (*so1->so_proto->pr_usrreq)(so1, PRU_CONNECT2, |
235 | (struct mbuf *)0, (struct mbuf *)so2, (struct mbuf *)0); | |
88a7a62a SL |
236 | splx(s); |
237 | return (error); | |
238 | } | |
88a7a62a | 239 | |
dedd6629 | 240 | sodisconnect(so) |
88a7a62a | 241 | register struct socket *so; |
ce9d8eb4 | 242 | { |
cc15ab5d BJ |
243 | int s = splnet(); |
244 | int error; | |
ce9d8eb4 | 245 | |
cc15ab5d BJ |
246 | if ((so->so_state & SS_ISCONNECTED) == 0) { |
247 | error = ENOTCONN; | |
248 | goto bad; | |
ce9d8eb4 | 249 | } |
cc15ab5d BJ |
250 | if (so->so_state & SS_ISDISCONNECTING) { |
251 | error = EALREADY; | |
252 | goto bad; | |
ce9d8eb4 | 253 | } |
cf012934 | 254 | error = (*so->so_proto->pr_usrreq)(so, PRU_DISCONNECT, |
dedd6629 | 255 | (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0); |
cc15ab5d BJ |
256 | bad: |
257 | splx(s); | |
258 | return (error); | |
ce9d8eb4 BJ |
259 | } |
260 | ||
440c48bf | 261 | #define SBLOCKWAIT(f) (((f) & MSG_DONTWAIT) ? M_NOWAIT : M_WAITOK) |
cc15ab5d BJ |
262 | /* |
263 | * Send on a socket. | |
264 | * If send must go all at once and message is larger than | |
265 | * send buffering, then hard error. | |
266 | * Lock against other senders. | |
267 | * If must go all at once and not enough room now, then | |
268 | * inform user that this would block and do nothing. | |
8250a099 | 269 | * Otherwise, if nonblocking, send as much as possible. |
7c4ec3aa MK |
270 | * The data to be sent is described by "uio" if nonzero, |
271 | * otherwise by the mbuf chain "top" (which must be null | |
272 | * if uio is not). Data provided in mbuf chain must be small | |
273 | * enough to send all at once. | |
274 | * | |
275 | * Returns nonzero on error, timeout or signal; callers | |
276 | * must check for short counts if EINTR/ERESTART are returned. | |
277 | * Data and control buffers are freed on return. | |
cc15ab5d | 278 | */ |
4b9db1f5 | 279 | sosend(so, addr, uio, top, control, flags) |
ce9d8eb4 | 280 | register struct socket *so; |
7c4ec3aa MK |
281 | struct mbuf *addr; |
282 | struct uio *uio; | |
283 | struct mbuf *top; | |
2967f28e | 284 | struct mbuf *control; |
7c4ec3aa | 285 | int flags; |
ce9d8eb4 | 286 | { |
dff5c020 | 287 | struct proc *p = curproc; /* XXX */ |
7c4ec3aa | 288 | struct mbuf **mp; |
2557c1fc | 289 | register struct mbuf *m; |
7c4ec3aa MK |
290 | register long space, len, resid; |
291 | int clen = 0, error, s, dontroute, mlen; | |
292 | int atomic = sosendallatonce(so) || top; | |
ce9d8eb4 | 293 | |
7c4ec3aa MK |
294 | if (uio) |
295 | resid = uio->uio_resid; | |
296 | else | |
297 | resid = top->m_pkthdr.len; | |
88a7a62a SL |
298 | dontroute = |
299 | (flags & MSG_DONTROUTE) && (so->so_options & SO_DONTROUTE) == 0 && | |
300 | (so->so_proto->pr_flags & PR_ATOMIC); | |
dff5c020 | 301 | p->p_stats->p_ru.ru_msgsnd++; |
2967f28e | 302 | if (control) |
7c4ec3aa | 303 | clen = control->m_len; |
cc15ab5d BJ |
304 | #define snderr(errno) { error = errno; splx(s); goto release; } |
305 | ||
8250a099 | 306 | restart: |
440c48bf | 307 | if (error = sblock(&so->so_snd, SBLOCKWAIT(flags))) |
7c4ec3aa | 308 | goto out; |
8250a099 MK |
309 | do { |
310 | s = splnet(); | |
af9c562f | 311 | if (so->so_state & SS_CANTSENDMORE) |
8250a099 | 312 | snderr(EPIPE); |
a2aebb63 KS |
313 | if (so->so_error) |
314 | snderr(so->so_error); | |
8250a099 | 315 | if ((so->so_state & SS_ISCONNECTED) == 0) { |
a2aebb63 | 316 | if (so->so_proto->pr_flags & PR_CONNREQUIRED) { |
f3bf27ac KS |
317 | if ((so->so_state & SS_ISCONFIRMING) == 0 && |
318 | !(resid == 0 && clen != 0)) | |
a2aebb63 | 319 | snderr(ENOTCONN); |
7c4ec3aa | 320 | } else if (addr == 0) |
8250a099 MK |
321 | snderr(EDESTADDRREQ); |
322 | } | |
7c4ec3aa | 323 | space = sbspace(&so->so_snd); |
8250a099 | 324 | if (flags & MSG_OOB) |
7c4ec3aa | 325 | space += 1024; |
440c48bf KM |
326 | if (atomic && resid > so->so_snd.sb_hiwat || |
327 | clen > so->so_snd.sb_hiwat) | |
328 | snderr(EMSGSIZE); | |
329 | if (space < resid + clen && uio && | |
7c4ec3aa | 330 | (atomic || space < so->so_snd.sb_lowat || space < clen)) { |
7c4ec3aa MK |
331 | if (so->so_state & SS_NBIO) |
332 | snderr(EWOULDBLOCK); | |
333 | sbunlock(&so->so_snd); | |
4b9db1f5 | 334 | error = sbwait(&so->so_snd); |
7c4ec3aa MK |
335 | splx(s); |
336 | if (error) | |
337 | goto out; | |
338 | goto restart; | |
8250a099 | 339 | } |
4c078bb2 | 340 | splx(s); |
8250a099 | 341 | mp = ⊤ |
7c4ec3aa | 342 | space -= clen; |
4b9db1f5 MK |
343 | do { |
344 | if (uio == NULL) { | |
7c4ec3aa MK |
345 | /* |
346 | * Data is prepackaged in "top". | |
347 | */ | |
348 | resid = 0; | |
349 | if (flags & MSG_EOR) | |
350 | top->m_flags |= M_EOR; | |
4b9db1f5 | 351 | } else do { |
2557c1fc MK |
352 | if (top == 0) { |
353 | MGETHDR(m, M_WAIT, MT_DATA); | |
354 | mlen = MHLEN; | |
355 | m->m_pkthdr.len = 0; | |
356 | m->m_pkthdr.rcvif = (struct ifnet *)0; | |
357 | } else { | |
358 | MGET(m, M_WAIT, MT_DATA); | |
359 | mlen = MLEN; | |
360 | } | |
7c4ec3aa | 361 | if (resid >= MINCLSIZE && space >= MCLBYTES) { |
2557c1fc MK |
362 | MCLGET(m, M_WAIT); |
363 | if ((m->m_flags & M_EXT) == 0) | |
8250a099 | 364 | goto nopages; |
2557c1fc MK |
365 | mlen = MCLBYTES; |
366 | #ifdef MAPPED_MBUFS | |
7c4ec3aa | 367 | len = min(MCLBYTES, resid); |
2557c1fc | 368 | #else |
9859687a | 369 | if (atomic && top == 0) { |
7c4ec3aa MK |
370 | len = min(MCLBYTES - max_hdr, resid); |
371 | m->m_data += max_hdr; | |
415a9324 KS |
372 | } else |
373 | len = min(MCLBYTES, resid); | |
2557c1fc MK |
374 | #endif |
375 | space -= MCLBYTES; | |
8250a099 MK |
376 | } else { |
377 | nopages: | |
7c4ec3aa | 378 | len = min(min(mlen, resid), space); |
8c0650b0 | 379 | space -= len; |
2557c1fc MK |
380 | /* |
381 | * For datagram protocols, leave room | |
382 | * for protocol headers in first mbuf. | |
383 | */ | |
84efcd38 | 384 | if (atomic && top == 0 && len < mlen) |
2557c1fc | 385 | MH_ALIGN(m, len); |
8250a099 | 386 | } |
179cd11f | 387 | error = uiomove(mtod(m, caddr_t), (int)len, uio); |
7c4ec3aa | 388 | resid = uio->uio_resid; |
8250a099 MK |
389 | m->m_len = len; |
390 | *mp = m; | |
2557c1fc | 391 | top->m_pkthdr.len += len; |
8250a099 MK |
392 | if (error) |
393 | goto release; | |
394 | mp = &m->m_next; | |
7c4ec3aa MK |
395 | if (resid <= 0) { |
396 | if (flags & MSG_EOR) | |
2557c1fc | 397 | top->m_flags |= M_EOR; |
af9c562f | 398 | break; |
2557c1fc MK |
399 | } |
400 | } while (space > 0 && atomic); | |
401 | if (dontroute) | |
402 | so->so_options |= SO_DONTROUTE; | |
403 | s = splnet(); /* XXX */ | |
404 | error = (*so->so_proto->pr_usrreq)(so, | |
405 | (flags & MSG_OOB) ? PRU_SENDOOB : PRU_SEND, | |
7c4ec3aa | 406 | top, addr, control); |
2557c1fc MK |
407 | splx(s); |
408 | if (dontroute) | |
409 | so->so_options &= ~SO_DONTROUTE; | |
7c4ec3aa MK |
410 | clen = 0; |
411 | control = 0; | |
2557c1fc MK |
412 | top = 0; |
413 | mp = ⊤ | |
2557c1fc MK |
414 | if (error) |
415 | goto release; | |
7c4ec3aa MK |
416 | } while (resid && space > 0); |
417 | } while (resid); | |
cc15ab5d | 418 | |
ce9d8eb4 | 419 | release: |
cc15ab5d | 420 | sbunlock(&so->so_snd); |
7c4ec3aa | 421 | out: |
0f90f987 BJ |
422 | if (top) |
423 | m_freem(top); | |
7c4ec3aa MK |
424 | if (control) |
425 | m_freem(control); | |
ce9d8eb4 BJ |
426 | return (error); |
427 | } | |
428 | ||
c34d38f4 MK |
429 | /* |
430 | * Implement receive operations on a socket. | |
431 | * We depend on the way that records are added to the sockbuf | |
432 | * by sbappend*. In particular, each record (mbufs linked through m_next) | |
433 | * must begin with an address if the protocol so specifies, | |
7c4ec3aa MK |
434 | * followed by an optional mbuf or mbufs containing ancillary data, |
435 | * and then zero or more mbufs of data. | |
c34d38f4 MK |
436 | * In order to avoid blocking network interrupts for the entire time here, |
437 | * we splx() while doing the actual copy to user space. | |
438 | * Although the sockbuf is locked, new data may still be appended, | |
439 | * and thus we must maintain consistency of the sockbuf during that time. | |
179cd11f | 440 | * |
7c4ec3aa | 441 | * The caller may receive the data as a single mbuf chain by supplying |
4b9db1f5 | 442 | * an mbuf **mp0 for use in returning the chain. The uio is then used |
7c4ec3aa | 443 | * only for the count in uio_resid. |
c34d38f4 | 444 | */ |
4b9db1f5 | 445 | soreceive(so, paddr, uio, mp0, controlp, flagsp) |
ce9d8eb4 | 446 | register struct socket *so; |
7c4ec3aa MK |
447 | struct mbuf **paddr; |
448 | struct uio *uio; | |
4b9db1f5 | 449 | struct mbuf **mp0; |
7c4ec3aa | 450 | struct mbuf **controlp; |
2557c1fc | 451 | int *flagsp; |
ce9d8eb4 | 452 | { |
4b9db1f5 MK |
453 | register struct mbuf *m, **mp; |
454 | register int flags, len, error, s, offset; | |
88a7a62a | 455 | struct protosw *pr = so->so_proto; |
7c4ec3aa MK |
456 | struct mbuf *nextrecord; |
457 | int moff, type; | |
34827683 | 458 | int orig_resid = uio->uio_resid; |
88a7a62a | 459 | |
4b9db1f5 | 460 | mp = mp0; |
7c4ec3aa MK |
461 | if (paddr) |
462 | *paddr = 0; | |
2557c1fc MK |
463 | if (controlp) |
464 | *controlp = 0; | |
465 | if (flagsp) | |
466 | flags = *flagsp &~ MSG_EOR; | |
179cd11f | 467 | else |
2557c1fc | 468 | flags = 0; |
88a7a62a | 469 | if (flags & MSG_OOB) { |
cce93e4b | 470 | m = m_get(M_WAIT, MT_DATA); |
88a7a62a | 471 | error = (*pr->pr_usrreq)(so, PRU_RCVOOB, |
de2c74a5 | 472 | m, (struct mbuf *)(flags & MSG_PEEK), (struct mbuf *)0); |
a8d3bf7f | 473 | if (error) |
5fe6f9d1 | 474 | goto bad; |
970108c7 | 475 | do { |
7c4ec3aa MK |
476 | error = uiomove(mtod(m, caddr_t), |
477 | (int) min(uio->uio_resid, m->m_len), uio); | |
970108c7 | 478 | m = m_free(m); |
a8d3bf7f | 479 | } while (uio->uio_resid && error == 0 && m); |
5fe6f9d1 | 480 | bad: |
970108c7 | 481 | if (m) |
39d536e6 | 482 | m_freem(m); |
a8d3bf7f | 483 | return (error); |
970108c7 | 484 | } |
7c4ec3aa MK |
485 | if (mp) |
486 | *mp = (struct mbuf *)0; | |
4b9db1f5 | 487 | if (so->so_state & SS_ISCONFIRMING && uio->uio_resid) |
2557c1fc MK |
488 | (*pr->pr_usrreq)(so, PRU_RCVD, (struct mbuf *)0, |
489 | (struct mbuf *)0, (struct mbuf *)0); | |
ce9d8eb4 | 490 | |
cc15ab5d | 491 | restart: |
440c48bf | 492 | if (error = sblock(&so->so_rcv, SBLOCKWAIT(flags))) |
83866636 | 493 | return (error); |
cc15ab5d BJ |
494 | s = splnet(); |
495 | ||
a2aebb63 | 496 | m = so->so_rcv.sb_mb; |
ba4350f5 MK |
497 | /* |
498 | * If we have less data than requested, block awaiting more | |
499 | * (subject to any timeout) if: | |
500 | * 1. the current count is less than the low water mark, or | |
501 | * 2. MSG_WAITALL is set, and it is possible to do the entire | |
502 | * receive operation at once if we block (resid <= hiwat). | |
440c48bf | 503 | * 3. MSG_DONTWAIT is not set |
ba4350f5 MK |
504 | * If MSG_WAITALL is set but resid is larger than the receive buffer, |
505 | * we have to do the receive in sections, and thus risk returning | |
506 | * a short count if a timeout or signal occurs after we start. | |
507 | */ | |
440c48bf KM |
508 | if (m == 0 || ((flags & MSG_DONTWAIT) == 0 && |
509 | so->so_rcv.sb_cc < uio->uio_resid) && | |
ba4350f5 | 510 | (so->so_rcv.sb_cc < so->so_rcv.sb_lowat || |
c05ef6cd KS |
511 | ((flags & MSG_WAITALL) && uio->uio_resid <= so->so_rcv.sb_hiwat))) |
512 | if (m && (m->m_nextpkt || (m->m_flags & M_EOR) || | |
513 | m->m_type == MT_OOBDATA || m->m_type == MT_CONTROL)) | |
514 | break; | |
7c4ec3aa MK |
515 | #ifdef DIAGNOSTIC |
516 | if (m == 0 && so->so_rcv.sb_cc) | |
a2aebb63 | 517 | panic("receive 1"); |
7c4ec3aa | 518 | #endif |
4c078bb2 | 519 | if (so->so_error) { |
95c435b0 | 520 | if (m) |
d4c3a4dd | 521 | goto dontblock; |
4c078bb2 | 522 | error = so->so_error; |
95c435b0 MK |
523 | if ((flags & MSG_PEEK) == 0) |
524 | so->so_error = 0; | |
4c078bb2 BJ |
525 | goto release; |
526 | } | |
95c435b0 MK |
527 | if (so->so_state & SS_CANTRCVMORE) { |
528 | if (m) | |
d4c3a4dd | 529 | goto dontblock; |
95c435b0 MK |
530 | else |
531 | goto release; | |
532 | } | |
629e51da | 533 | if ((so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING)) == 0 && |
f02d4eaa KB |
534 | (so->so_proto->pr_flags & PR_CONNREQUIRED)) { |
535 | error = ENOTCONN; | |
536 | goto release; | |
537 | } | |
4b9db1f5 | 538 | if (uio->uio_resid == 0) |
c34d38f4 | 539 | goto release; |
440c48bf | 540 | if ((so->so_state & SS_NBIO) || (flags & MSG_DONTWAIT)) { |
f02d4eaa KB |
541 | error = EWOULDBLOCK; |
542 | goto release; | |
543 | } | |
cc15ab5d | 544 | sbunlock(&so->so_rcv); |
4b9db1f5 | 545 | error = sbwait(&so->so_rcv); |
a4f6d93d | 546 | splx(s); |
7c4ec3aa MK |
547 | if (error) |
548 | return (error); | |
cc15ab5d | 549 | goto restart; |
ce9d8eb4 | 550 | } |
0904b863 KM |
551 | if (uio->uio_procp) |
552 | uio->uio_procp->p_stats->p_ru.ru_msgrcv++; | |
2557c1fc | 553 | nextrecord = m->m_nextpkt; |
c05ef6cd | 554 | record_eor = m->m_flags & M_EOR; |
88a7a62a | 555 | if (pr->pr_flags & PR_ADDR) { |
7c4ec3aa | 556 | #ifdef DIAGNOSTIC |
c34d38f4 | 557 | if (m->m_type != MT_SONAME) |
261a8548 | 558 | panic("receive 1a"); |
7c4ec3aa | 559 | #endif |
34827683 | 560 | orig_resid = 0; |
261a8548 | 561 | if (flags & MSG_PEEK) { |
7c4ec3aa MK |
562 | if (paddr) |
563 | *paddr = m_copy(m, 0, m->m_len); | |
c34d38f4 | 564 | m = m->m_next; |
261a8548 | 565 | } else { |
c34d38f4 | 566 | sbfree(&so->so_rcv, m); |
7c4ec3aa MK |
567 | if (paddr) { |
568 | *paddr = m; | |
6ff43975 | 569 | so->so_rcv.sb_mb = m->m_next; |
c34d38f4 | 570 | m->m_next = 0; |
6ff43975 | 571 | m = so->so_rcv.sb_mb; |
c34d38f4 | 572 | } else { |
6ff43975 MK |
573 | MFREE(m, so->so_rcv.sb_mb); |
574 | m = so->so_rcv.sb_mb; | |
c34d38f4 | 575 | } |
88a7a62a | 576 | } |
cc15ab5d | 577 | } |
7c4ec3aa | 578 | while (m && m->m_type == MT_CONTROL && error == 0) { |
2557c1fc MK |
579 | if (flags & MSG_PEEK) { |
580 | if (controlp) | |
581 | *controlp = m_copy(m, 0, m->m_len); | |
582 | m = m->m_next; | |
583 | } else { | |
584 | sbfree(&so->so_rcv, m); | |
585 | if (controlp) { | |
e8f8de91 KS |
586 | if (pr->pr_domain->dom_externalize && |
587 | mtod(m, struct cmsghdr *)->cmsg_type == | |
588 | SCM_RIGHTS) | |
7c4ec3aa | 589 | error = (*pr->pr_domain->dom_externalize)(m); |
2557c1fc MK |
590 | *controlp = m; |
591 | so->so_rcv.sb_mb = m->m_next; | |
592 | m->m_next = 0; | |
593 | m = so->so_rcv.sb_mb; | |
594 | } else { | |
595 | MFREE(m, so->so_rcv.sb_mb); | |
596 | m = so->so_rcv.sb_mb; | |
597 | } | |
598 | } | |
34827683 KM |
599 | if (controlp) { |
600 | orig_resid = 0; | |
7c4ec3aa | 601 | controlp = &(*controlp)->m_next; |
34827683 | 602 | } |
2557c1fc | 603 | } |
7c4ec3aa | 604 | if (m) { |
ba4350f5 MK |
605 | if ((flags & MSG_PEEK) == 0) |
606 | m->m_nextpkt = nextrecord; | |
7c4ec3aa | 607 | type = m->m_type; |
415a9324 KS |
608 | if (type == MT_OOBDATA) |
609 | flags |= MSG_OOB; | |
7c4ec3aa | 610 | } |
970108c7 | 611 | moff = 0; |
dd1ca18d | 612 | offset = 0; |
415a9324 KS |
613 | while (m && uio->uio_resid > 0 && error == 0) { |
614 | if (m->m_type == MT_OOBDATA) { | |
615 | if (type != MT_OOBDATA) | |
616 | break; | |
617 | } else if (type == MT_OOBDATA) | |
618 | break; | |
7c4ec3aa | 619 | #ifdef DIAGNOSTIC |
2557c1fc | 620 | else if (m->m_type != MT_DATA && m->m_type != MT_HEADER) |
c34d38f4 | 621 | panic("receive 3"); |
7c4ec3aa | 622 | #endif |
32a43ee2 | 623 | so->so_state &= ~SS_RCVATMARK; |
4b9db1f5 | 624 | len = uio->uio_resid; |
dd1ca18d MK |
625 | if (so->so_oobmark && len > so->so_oobmark - offset) |
626 | len = so->so_oobmark - offset; | |
8c0650b0 | 627 | if (len > m->m_len - moff) |
970108c7 | 628 | len = m->m_len - moff; |
7c4ec3aa MK |
629 | /* |
630 | * If mp is set, just pass back the mbufs. | |
631 | * Otherwise copy them out via the uio, then free. | |
632 | * Sockbuf must be consistent here (points to current mbuf, | |
633 | * it points to next record) when we drop priority; | |
634 | * we must note any additions to the sockbuf when we | |
635 | * block interrupts again. | |
636 | */ | |
637 | if (mp == 0) { | |
638 | splx(s); | |
639 | error = uiomove(mtod(m, caddr_t) + moff, (int)len, uio); | |
7c4ec3aa | 640 | s = splnet(); |
4b9db1f5 MK |
641 | } else |
642 | uio->uio_resid -= len; | |
8c0650b0 | 643 | if (len == m->m_len - moff) { |
c34d38f4 MK |
644 | if (flags & MSG_PEEK) { |
645 | m = m->m_next; | |
646 | moff = 0; | |
647 | } else { | |
2557c1fc | 648 | nextrecord = m->m_nextpkt; |
6ff43975 | 649 | sbfree(&so->so_rcv, m); |
7c4ec3aa MK |
650 | if (mp) { |
651 | *mp = m; | |
652 | mp = &m->m_next; | |
4b9db1f5 MK |
653 | so->so_rcv.sb_mb = m = m->m_next; |
654 | *mp = (struct mbuf *)0; | |
7c4ec3aa MK |
655 | } else { |
656 | MFREE(m, so->so_rcv.sb_mb); | |
657 | m = so->so_rcv.sb_mb; | |
658 | } | |
6ff43975 | 659 | if (m) |
2557c1fc | 660 | m->m_nextpkt = nextrecord; |
c34d38f4 | 661 | } |
ce9d8eb4 | 662 | } else { |
88a7a62a | 663 | if (flags & MSG_PEEK) |
970108c7 BJ |
664 | moff += len; |
665 | else { | |
4b9db1f5 MK |
666 | if (mp) |
667 | *mp = m_copym(m, 0, len, M_WAIT); | |
2557c1fc | 668 | m->m_data += len; |
970108c7 BJ |
669 | m->m_len -= len; |
670 | so->so_rcv.sb_cc -= len; | |
671 | } | |
ce9d8eb4 | 672 | } |
dd1ca18d MK |
673 | if (so->so_oobmark) { |
674 | if ((flags & MSG_PEEK) == 0) { | |
675 | so->so_oobmark -= len; | |
676 | if (so->so_oobmark == 0) { | |
677 | so->so_state |= SS_RCVATMARK; | |
678 | break; | |
679 | } | |
a660cd8d | 680 | } else { |
dd1ca18d | 681 | offset += len; |
a660cd8d CT |
682 | if (offset == so->so_oobmark) |
683 | break; | |
684 | } | |
970108c7 | 685 | } |
c05ef6cd KS |
686 | if (m == 0 && record_eor) { |
687 | flags |= record_eor; | |
2967f28e | 688 | break; |
c05ef6cd | 689 | } |
7c4ec3aa MK |
690 | /* |
691 | * If the MSG_WAITALL flag is set (for non-atomic socket), | |
4b9db1f5 | 692 | * we must not quit until "uio->uio_resid == 0" or an error |
7c4ec3aa | 693 | * termination. If a signal/timeout occurs, return |
4b9db1f5 | 694 | * with a short count but without error. |
7c4ec3aa MK |
695 | * Keep sockbuf locked against other readers. |
696 | */ | |
4b9db1f5 | 697 | while (flags & MSG_WAITALL && m == 0 && uio->uio_resid > 0 && |
c05ef6cd | 698 | !(flags & MSG_OOB) && !sosendallatonce(so)) { |
95c435b0 MK |
699 | if (so->so_error || so->so_state & SS_CANTRCVMORE) |
700 | break; | |
7c4ec3aa MK |
701 | error = sbwait(&so->so_rcv); |
702 | if (error) { | |
703 | sbunlock(&so->so_rcv); | |
704 | splx(s); | |
7c4ec3aa MK |
705 | return (0); |
706 | } | |
c05ef6cd | 707 | if (m = so->so_rcv.sb_mb) { |
7c4ec3aa | 708 | nextrecord = m->m_nextpkt; |
c05ef6cd KS |
709 | record_eor |= m->m_flags & M_EOR; |
710 | } | |
7c4ec3aa | 711 | } |
261a8548 | 712 | } |
34827683 KM |
713 | |
714 | if (m && pr->pr_flags & PR_ATOMIC) { | |
715 | flags |= MSG_TRUNC; | |
716 | if ((flags & MSG_PEEK) == 0) | |
717 | (void) sbdroprecord(&so->so_rcv); | |
718 | } | |
261a8548 | 719 | if ((flags & MSG_PEEK) == 0) { |
491e9020 | 720 | if (m == 0) |
261a8548 | 721 | so->so_rcv.sb_mb = nextrecord; |
261a8548 MK |
722 | if (pr->pr_flags & PR_WANTRCVD && so->so_pcb) |
723 | (*pr->pr_usrreq)(so, PRU_RCVD, (struct mbuf *)0, | |
a2aebb63 KS |
724 | (struct mbuf *)flags, (struct mbuf *)0, |
725 | (struct mbuf *)0); | |
261a8548 | 726 | } |
34827683 KM |
727 | if (orig_resid == uio->uio_resid && orig_resid && |
728 | (flags & MSG_EOR) == 0 && (so->so_state & SS_CANTRCVMORE) == 0) { | |
729 | sbunlock(&so->so_rcv); | |
730 | splx(s); | |
731 | goto restart; | |
732 | } | |
733 | ||
2557c1fc MK |
734 | if (flagsp) |
735 | *flagsp |= flags; | |
cc15ab5d | 736 | release: |
ae921915 | 737 | sbunlock(&so->so_rcv); |
cc15ab5d | 738 | splx(s); |
ae921915 | 739 | return (error); |
92a533e6 BJ |
740 | } |
741 | ||
98422daa | 742 | soshutdown(so, how) |
88a7a62a SL |
743 | register struct socket *so; |
744 | register int how; | |
98422daa | 745 | { |
88a7a62a | 746 | register struct protosw *pr = so->so_proto; |
98422daa SL |
747 | |
748 | how++; | |
88a7a62a SL |
749 | if (how & FREAD) |
750 | sorflush(so); | |
98422daa | 751 | if (how & FWRITE) |
88a7a62a SL |
752 | return ((*pr->pr_usrreq)(so, PRU_SHUTDOWN, |
753 | (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0)); | |
98422daa SL |
754 | return (0); |
755 | } | |
756 | ||
88a7a62a SL |
757 | sorflush(so) |
758 | register struct socket *so; | |
759 | { | |
760 | register struct sockbuf *sb = &so->so_rcv; | |
761 | register struct protosw *pr = so->so_proto; | |
762 | register int s; | |
763 | struct sockbuf asb; | |
764 | ||
83866636 | 765 | sb->sb_flags |= SB_NOINTR; |
440c48bf | 766 | (void) sblock(sb, M_WAITOK); |
88a7a62a SL |
767 | s = splimp(); |
768 | socantrcvmore(so); | |
769 | sbunlock(sb); | |
770 | asb = *sb; | |
771 | bzero((caddr_t)sb, sizeof (*sb)); | |
772 | splx(s); | |
261a8548 MK |
773 | if (pr->pr_flags & PR_RIGHTS && pr->pr_domain->dom_dispose) |
774 | (*pr->pr_domain->dom_dispose)(asb.sb_mb); | |
88a7a62a SL |
775 | sbrelease(&asb); |
776 | } | |
777 | ||
bc2f5859 | 778 | sosetopt(so, level, optname, m0) |
88a7a62a | 779 | register struct socket *so; |
98422daa | 780 | int level, optname; |
bc2f5859 | 781 | struct mbuf *m0; |
98422daa | 782 | { |
61ec2127 | 783 | int error = 0; |
bc2f5859 | 784 | register struct mbuf *m = m0; |
98422daa | 785 | |
61ec2127 | 786 | if (level != SOL_SOCKET) { |
cbe54390 MK |
787 | if (so->so_proto && so->so_proto->pr_ctloutput) |
788 | return ((*so->so_proto->pr_ctloutput) | |
bc2f5859 | 789 | (PRCO_SETOPT, so, level, optname, &m0)); |
cbe54390 MK |
790 | error = ENOPROTOOPT; |
791 | } else { | |
792 | switch (optname) { | |
98422daa | 793 | |
cbe54390 MK |
794 | case SO_LINGER: |
795 | if (m == NULL || m->m_len != sizeof (struct linger)) { | |
796 | error = EINVAL; | |
797 | goto bad; | |
798 | } | |
799 | so->so_linger = mtod(m, struct linger *)->l_linger; | |
800 | /* fall thru... */ | |
801 | ||
802 | case SO_DEBUG: | |
803 | case SO_KEEPALIVE: | |
804 | case SO_DONTROUTE: | |
805 | case SO_USELOOPBACK: | |
806 | case SO_BROADCAST: | |
807 | case SO_REUSEADDR: | |
f1242a73 | 808 | case SO_REUSEPORT: |
97c8f6a8 | 809 | case SO_OOBINLINE: |
cbe54390 MK |
810 | if (m == NULL || m->m_len < sizeof (int)) { |
811 | error = EINVAL; | |
812 | goto bad; | |
813 | } | |
814 | if (*mtod(m, int *)) | |
815 | so->so_options |= optname; | |
816 | else | |
817 | so->so_options &= ~optname; | |
818 | break; | |
98422daa | 819 | |
cbe54390 | 820 | case SO_SNDBUF: |
83866636 | 821 | case SO_RCVBUF: |
7c4ec3aa | 822 | case SO_SNDLOWAT: |
83866636 | 823 | case SO_RCVLOWAT: |
cbe54390 MK |
824 | if (m == NULL || m->m_len < sizeof (int)) { |
825 | error = EINVAL; | |
826 | goto bad; | |
827 | } | |
828 | switch (optname) { | |
829 | ||
830 | case SO_SNDBUF: | |
831 | case SO_RCVBUF: | |
7c4ec3aa MK |
832 | if (sbreserve(optname == SO_SNDBUF ? |
833 | &so->so_snd : &so->so_rcv, | |
834 | (u_long) *mtod(m, int *)) == 0) { | |
cbe54390 MK |
835 | error = ENOBUFS; |
836 | goto bad; | |
837 | } | |
838 | break; | |
839 | ||
840 | case SO_SNDLOWAT: | |
7c4ec3aa MK |
841 | so->so_snd.sb_lowat = *mtod(m, int *); |
842 | break; | |
cbe54390 | 843 | case SO_RCVLOWAT: |
7c4ec3aa | 844 | so->so_rcv.sb_lowat = *mtod(m, int *); |
cbe54390 | 845 | break; |
fc2cae0b MK |
846 | } |
847 | break; | |
848 | ||
849 | case SO_SNDTIMEO: | |
850 | case SO_RCVTIMEO: | |
851 | { | |
852 | struct timeval *tv; | |
853 | short val; | |
854 | ||
855 | if (m == NULL || m->m_len < sizeof (*tv)) { | |
856 | error = EINVAL; | |
857 | goto bad; | |
858 | } | |
859 | tv = mtod(m, struct timeval *); | |
860 | if (tv->tv_sec > SHRT_MAX / hz - hz) { | |
861 | error = EDOM; | |
862 | goto bad; | |
863 | } | |
864 | val = tv->tv_sec * hz + tv->tv_usec / tick; | |
865 | ||
866 | switch (optname) { | |
867 | ||
cbe54390 | 868 | case SO_SNDTIMEO: |
fc2cae0b | 869 | so->so_snd.sb_timeo = val; |
7c4ec3aa | 870 | break; |
cbe54390 | 871 | case SO_RCVTIMEO: |
fc2cae0b | 872 | so->so_rcv.sb_timeo = val; |
cbe54390 MK |
873 | break; |
874 | } | |
875 | break; | |
fc2cae0b | 876 | } |
cbe54390 MK |
877 | |
878 | default: | |
879 | error = ENOPROTOOPT; | |
880 | break; | |
881 | } | |
d4c3a4dd | 882 | m = 0; |
bfedcc73 KS |
883 | if (error == 0 && so->so_proto && so->so_proto->pr_ctloutput) |
884 | (void) ((*so->so_proto->pr_ctloutput) | |
885 | (PRCO_SETOPT, so, level, optname, &m0)); | |
98422daa | 886 | } |
61ec2127 SL |
887 | bad: |
888 | if (m) | |
889 | (void) m_free(m); | |
890 | return (error); | |
98422daa SL |
891 | } |
892 | ||
61ec2127 | 893 | sogetopt(so, level, optname, mp) |
88a7a62a | 894 | register struct socket *so; |
98422daa | 895 | int level, optname; |
61ec2127 | 896 | struct mbuf **mp; |
98422daa | 897 | { |
61ec2127 | 898 | register struct mbuf *m; |
98422daa | 899 | |
cbe54390 MK |
900 | if (level != SOL_SOCKET) { |
901 | if (so->so_proto && so->so_proto->pr_ctloutput) { | |
902 | return ((*so->so_proto->pr_ctloutput) | |
903 | (PRCO_GETOPT, so, level, optname, mp)); | |
179cd11f | 904 | } else |
cbe54390 MK |
905 | return (ENOPROTOOPT); |
906 | } else { | |
61ec2127 | 907 | m = m_get(M_WAIT, MT_SOOPTS); |
d6e6eea8 MK |
908 | m->m_len = sizeof (int); |
909 | ||
cbe54390 MK |
910 | switch (optname) { |
911 | ||
912 | case SO_LINGER: | |
913 | m->m_len = sizeof (struct linger); | |
914 | mtod(m, struct linger *)->l_onoff = | |
915 | so->so_options & SO_LINGER; | |
916 | mtod(m, struct linger *)->l_linger = so->so_linger; | |
917 | break; | |
918 | ||
919 | case SO_USELOOPBACK: | |
920 | case SO_DONTROUTE: | |
921 | case SO_DEBUG: | |
922 | case SO_KEEPALIVE: | |
923 | case SO_REUSEADDR: | |
f1242a73 | 924 | case SO_REUSEPORT: |
cbe54390 | 925 | case SO_BROADCAST: |
97c8f6a8 | 926 | case SO_OOBINLINE: |
cbe54390 MK |
927 | *mtod(m, int *) = so->so_options & optname; |
928 | break; | |
929 | ||
d6e6eea8 MK |
930 | case SO_TYPE: |
931 | *mtod(m, int *) = so->so_type; | |
932 | break; | |
933 | ||
de2c74a5 MK |
934 | case SO_ERROR: |
935 | *mtod(m, int *) = so->so_error; | |
936 | so->so_error = 0; | |
937 | break; | |
938 | ||
cbe54390 MK |
939 | case SO_SNDBUF: |
940 | *mtod(m, int *) = so->so_snd.sb_hiwat; | |
941 | break; | |
98422daa | 942 | |
cbe54390 MK |
943 | case SO_RCVBUF: |
944 | *mtod(m, int *) = so->so_rcv.sb_hiwat; | |
945 | break; | |
946 | ||
947 | case SO_SNDLOWAT: | |
948 | *mtod(m, int *) = so->so_snd.sb_lowat; | |
949 | break; | |
950 | ||
951 | case SO_RCVLOWAT: | |
952 | *mtod(m, int *) = so->so_rcv.sb_lowat; | |
953 | break; | |
954 | ||
955 | case SO_SNDTIMEO: | |
cbe54390 | 956 | case SO_RCVTIMEO: |
fc2cae0b MK |
957 | { |
958 | int val = (optname == SO_SNDTIMEO ? | |
959 | so->so_snd.sb_timeo : so->so_rcv.sb_timeo); | |
960 | ||
961 | m->m_len = sizeof(struct timeval); | |
962 | mtod(m, struct timeval *)->tv_sec = val / hz; | |
963 | mtod(m, struct timeval *)->tv_usec = | |
964 | (val % hz) / tick; | |
cbe54390 | 965 | break; |
fc2cae0b | 966 | } |
cbe54390 MK |
967 | |
968 | default: | |
8011f5df | 969 | (void)m_free(m); |
cbe54390 MK |
970 | return (ENOPROTOOPT); |
971 | } | |
972 | *mp = m; | |
973 | return (0); | |
98422daa | 974 | } |
98422daa SL |
975 | } |
976 | ||
edebca28 | 977 | sohasoutofband(so) |
88a7a62a | 978 | register struct socket *so; |
edebca28 | 979 | { |
3d190e86 | 980 | struct proc *p; |
edebca28 | 981 | |
a2aebb63 KS |
982 | if (so->so_pgid < 0) |
983 | gsignal(-so->so_pgid, SIGURG); | |
984 | else if (so->so_pgid > 0 && (p = pfind(so->so_pgid)) != 0) | |
3d190e86 | 985 | psignal(p, SIGURG); |
b4f32e56 | 986 | selwakeup(&so->so_rcv.sb_sel); |
edebca28 | 987 | } |