1 /*
2 * ng_ksocket.c
3 */
4
5 /*-
6 * Copyright (c) 1996-1999 Whistle Communications, Inc.
7 * All rights reserved.
8 *
9 * Subject to the following obligations and disclaimer of warranty, use and
10 * redistribution of this software, in source or object code forms, with or
11 * without modifications are expressly permitted by Whistle Communications;
12 * provided, however, that:
13 * 1. Any and all reproductions of the source or object code must include the
14 * copyright notice above and the following disclaimer of warranties; and
15 * 2. No rights are granted, in any manner or form, to use Whistle
16 * Communications, Inc. trademarks, including the mark "WHISTLE
17 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as
18 * such appears in the above copyright notice or in the software.
19 *
20 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
21 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
22 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
23 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
25 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
26 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
27 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
28 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
29 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
30 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
31 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
32 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
35 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
36 * OF SUCH DAMAGE.
37 *
38 * Author: Archie Cobbs <archie@freebsd.org>
39 *
40 * $FreeBSD: releng/9.0/sys/netgraph/ng_ksocket.c 220768 2011-04-18 09:12:27Z glebius $
41 * $Whistle: ng_ksocket.c,v 1.1 1999/11/16 20:04:40 archie Exp $
42 */
43
44 /*
45 * Kernel socket node type. This node type is basically a kernel-mode
46 * version of a socket... kindof like the reverse of the socket node type.
47 */
48
49 #include <sys/param.h>
50 #include <sys/systm.h>
51 #include <sys/kernel.h>
52 #include <sys/mbuf.h>
53 #include <sys/proc.h>
54 #include <sys/malloc.h>
55 #include <sys/ctype.h>
56 #include <sys/protosw.h>
57 #include <sys/errno.h>
58 #include <sys/socket.h>
59 #include <sys/socketvar.h>
60 #include <sys/uio.h>
61 #include <sys/un.h>
62
63 #include <netgraph/ng_message.h>
64 #include <netgraph/netgraph.h>
65 #include <netgraph/ng_parse.h>
66 #include <netgraph/ng_ksocket.h>
67
68 #include <netinet/in.h>
69 #include <netatalk/at.h>
70
71 #ifdef NG_SEPARATE_MALLOC
72 MALLOC_DEFINE(M_NETGRAPH_KSOCKET, "netgraph_ksock", "netgraph ksock node ");
73 #else
74 #define M_NETGRAPH_KSOCKET M_NETGRAPH
75 #endif
76
77 #define OFFSETOF(s, e) ((char *)&((s *)0)->e - (char *)((s *)0))
78 #define SADATA_OFFSET (OFFSETOF(struct sockaddr, sa_data))
79
80 /* Node private data */
81 struct ng_ksocket_private {
82 node_p node;
83 hook_p hook;
84 struct socket *so;
85 int fn_sent; /* FN call on incoming event was sent */
86 LIST_HEAD(, ng_ksocket_private) embryos;
87 LIST_ENTRY(ng_ksocket_private) siblings;
88 u_int32_t flags;
89 u_int32_t response_token;
90 ng_ID_t response_addr;
91 };
92 typedef struct ng_ksocket_private *priv_p;
93
94 /* Flags for priv_p */
95 #define KSF_CONNECTING 0x00000001 /* Waiting for connection complete */
96 #define KSF_ACCEPTING 0x00000002 /* Waiting for accept complete */
97 #define KSF_EOFSEEN 0x00000004 /* Have sent 0-length EOF mbuf */
98 #define KSF_CLONED 0x00000008 /* Cloned from an accepting socket */
99 #define KSF_EMBRYONIC 0x00000010 /* Cloned node with no hooks yet */
100
101 /* Netgraph node methods */
102 static ng_constructor_t ng_ksocket_constructor;
103 static ng_rcvmsg_t ng_ksocket_rcvmsg;
104 static ng_shutdown_t ng_ksocket_shutdown;
105 static ng_newhook_t ng_ksocket_newhook;
106 static ng_rcvdata_t ng_ksocket_rcvdata;
107 static ng_connect_t ng_ksocket_connect;
108 static ng_disconnect_t ng_ksocket_disconnect;
109
110 /* Alias structure */
111 struct ng_ksocket_alias {
112 const char *name;
113 const int value;
114 const int family;
115 };
116
117 /* Protocol family aliases */
118 static const struct ng_ksocket_alias ng_ksocket_families[] = {
119 { "local", PF_LOCAL },
120 { "inet", PF_INET },
121 { "inet6", PF_INET6 },
122 { "atalk", PF_APPLETALK },
123 { "ipx", PF_IPX },
124 { "atm", PF_ATM },
125 { NULL, -1 },
126 };
127
128 /* Socket type aliases */
129 static const struct ng_ksocket_alias ng_ksocket_types[] = {
130 { "stream", SOCK_STREAM },
131 { "dgram", SOCK_DGRAM },
132 { "raw", SOCK_RAW },
133 { "rdm", SOCK_RDM },
134 { "seqpacket", SOCK_SEQPACKET },
135 { NULL, -1 },
136 };
137
138 /* Protocol aliases */
139 static const struct ng_ksocket_alias ng_ksocket_protos[] = {
140 { "ip", IPPROTO_IP, PF_INET },
141 { "raw", IPPROTO_RAW, PF_INET },
142 { "icmp", IPPROTO_ICMP, PF_INET },
143 { "igmp", IPPROTO_IGMP, PF_INET },
144 { "tcp", IPPROTO_TCP, PF_INET },
145 { "udp", IPPROTO_UDP, PF_INET },
146 { "gre", IPPROTO_GRE, PF_INET },
147 { "esp", IPPROTO_ESP, PF_INET },
148 { "ah", IPPROTO_AH, PF_INET },
149 { "swipe", IPPROTO_SWIPE, PF_INET },
150 { "encap", IPPROTO_ENCAP, PF_INET },
151 { "divert", IPPROTO_DIVERT, PF_INET },
152 { "pim", IPPROTO_PIM, PF_INET },
153 { "ddp", ATPROTO_DDP, PF_APPLETALK },
154 { "aarp", ATPROTO_AARP, PF_APPLETALK },
155 { NULL, -1 },
156 };
157
158 /* Helper functions */
159 static int ng_ksocket_check_accept(priv_p);
160 static void ng_ksocket_finish_accept(priv_p);
161 static int ng_ksocket_incoming(struct socket *so, void *arg, int waitflag);
162 static int ng_ksocket_parse(const struct ng_ksocket_alias *aliases,
163 const char *s, int family);
164 static void ng_ksocket_incoming2(node_p node, hook_p hook,
165 void *arg1, int arg2);
166
167 /************************************************************************
168 STRUCT SOCKADDR PARSE TYPE
169 ************************************************************************/
170
171 /* Get the length of the data portion of a generic struct sockaddr */
172 static int
173 ng_parse_generic_sockdata_getLength(const struct ng_parse_type *type,
174 const u_char *start, const u_char *buf)
175 {
176 const struct sockaddr *sa;
177
178 sa = (const struct sockaddr *)(buf - SADATA_OFFSET);
179 return (sa->sa_len < SADATA_OFFSET) ? 0 : sa->sa_len - SADATA_OFFSET;
180 }
181
182 /* Type for the variable length data portion of a generic struct sockaddr */
183 static const struct ng_parse_type ng_ksocket_generic_sockdata_type = {
184 &ng_parse_bytearray_type,
185 &ng_parse_generic_sockdata_getLength
186 };
187
188 /* Type for a generic struct sockaddr */
189 static const struct ng_parse_struct_field
190 ng_parse_generic_sockaddr_type_fields[] = {
191 { "len", &ng_parse_uint8_type },
192 { "family", &ng_parse_uint8_type },
193 { "data", &ng_ksocket_generic_sockdata_type },
194 { NULL }
195 };
196 static const struct ng_parse_type ng_ksocket_generic_sockaddr_type = {
197 &ng_parse_struct_type,
198 &ng_parse_generic_sockaddr_type_fields
199 };
200
201 /* Convert a struct sockaddr from ASCII to binary. If its a protocol
202 family that we specially handle, do that, otherwise defer to the
203 generic parse type ng_ksocket_generic_sockaddr_type. */
204 static int
205 ng_ksocket_sockaddr_parse(const struct ng_parse_type *type,
206 const char *s, int *off, const u_char *const start,
207 u_char *const buf, int *buflen)
208 {
209 struct sockaddr *const sa = (struct sockaddr *)buf;
210 enum ng_parse_token tok;
211 char fambuf[32];
212 int family, len;
213 char *t;
214
215 /* If next token is a left curly brace, use generic parse type */
216 if ((tok = ng_parse_get_token(s, off, &len)) == T_LBRACE) {
217 return (*ng_ksocket_generic_sockaddr_type.supertype->parse)
218 (&ng_ksocket_generic_sockaddr_type,
219 s, off, start, buf, buflen);
220 }
221
222 /* Get socket address family followed by a slash */
223 while (isspace(s[*off]))
224 (*off)++;
225 if ((t = index(s + *off, '/')) == NULL)
226 return (EINVAL);
227 if ((len = t - (s + *off)) > sizeof(fambuf) - 1)
228 return (EINVAL);
229 strncpy(fambuf, s + *off, len);
230 fambuf[len] = '\0';
231 *off += len + 1;
232 if ((family = ng_ksocket_parse(ng_ksocket_families, fambuf, 0)) == -1)
233 return (EINVAL);
234
235 /* Set family */
236 if (*buflen < SADATA_OFFSET)
237 return (ERANGE);
238 sa->sa_family = family;
239
240 /* Set family-specific data and length */
241 switch (sa->sa_family) {
242 case PF_LOCAL: /* Get pathname */
243 {
244 const int pathoff = OFFSETOF(struct sockaddr_un, sun_path);
245 struct sockaddr_un *const sun = (struct sockaddr_un *)sa;
246 int toklen, pathlen;
247 char *path;
248
249 if ((path = ng_get_string_token(s, off, &toklen, NULL)) == NULL)
250 return (EINVAL);
251 pathlen = strlen(path);
252 if (pathlen > SOCK_MAXADDRLEN) {
253 free(path, M_NETGRAPH_KSOCKET);
254 return (E2BIG);
255 }
256 if (*buflen < pathoff + pathlen) {
257 free(path, M_NETGRAPH_KSOCKET);
258 return (ERANGE);
259 }
260 *off += toklen;
261 bcopy(path, sun->sun_path, pathlen);
262 sun->sun_len = pathoff + pathlen;
263 free(path, M_NETGRAPH_KSOCKET);
264 break;
265 }
266
267 case PF_INET: /* Get an IP address with optional port */
268 {
269 struct sockaddr_in *const sin = (struct sockaddr_in *)sa;
270 int i;
271
272 /* Parse this: <ipaddress>[:port] */
273 for (i = 0; i < 4; i++) {
274 u_long val;
275 char *eptr;
276
277 val = strtoul(s + *off, &eptr, 10);
278 if (val > 0xff || eptr == s + *off)
279 return (EINVAL);
280 *off += (eptr - (s + *off));
281 ((u_char *)&sin->sin_addr)[i] = (u_char)val;
282 if (i < 3) {
283 if (s[*off] != '.')
284 return (EINVAL);
285 (*off)++;
286 } else if (s[*off] == ':') {
287 (*off)++;
288 val = strtoul(s + *off, &eptr, 10);
289 if (val > 0xffff || eptr == s + *off)
290 return (EINVAL);
291 *off += (eptr - (s + *off));
292 sin->sin_port = htons(val);
293 } else
294 sin->sin_port = 0;
295 }
296 bzero(&sin->sin_zero, sizeof(sin->sin_zero));
297 sin->sin_len = sizeof(*sin);
298 break;
299 }
300
301 #if 0
302 case PF_APPLETALK: /* XXX implement these someday */
303 case PF_INET6:
304 case PF_IPX:
305 #endif
306
307 default:
308 return (EINVAL);
309 }
310
311 /* Done */
312 *buflen = sa->sa_len;
313 return (0);
314 }
315
316 /* Convert a struct sockaddr from binary to ASCII */
317 static int
318 ng_ksocket_sockaddr_unparse(const struct ng_parse_type *type,
319 const u_char *data, int *off, char *cbuf, int cbuflen)
320 {
321 const struct sockaddr *sa = (const struct sockaddr *)(data + *off);
322 int slen = 0;
323
324 /* Output socket address, either in special or generic format */
325 switch (sa->sa_family) {
326 case PF_LOCAL:
327 {
328 const int pathoff = OFFSETOF(struct sockaddr_un, sun_path);
329 const struct sockaddr_un *sun = (const struct sockaddr_un *)sa;
330 const int pathlen = sun->sun_len - pathoff;
331 char pathbuf[SOCK_MAXADDRLEN + 1];
332 char *pathtoken;
333
334 bcopy(sun->sun_path, pathbuf, pathlen);
335 if ((pathtoken = ng_encode_string(pathbuf, pathlen)) == NULL)
336 return (ENOMEM);
337 slen += snprintf(cbuf, cbuflen, "local/%s", pathtoken);
338 free(pathtoken, M_NETGRAPH_KSOCKET);
339 if (slen >= cbuflen)
340 return (ERANGE);
341 *off += sun->sun_len;
342 return (0);
343 }
344
345 case PF_INET:
346 {
347 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
348
349 slen += snprintf(cbuf, cbuflen, "inet/%d.%d.%d.%d",
350 ((const u_char *)&sin->sin_addr)[0],
351 ((const u_char *)&sin->sin_addr)[1],
352 ((const u_char *)&sin->sin_addr)[2],
353 ((const u_char *)&sin->sin_addr)[3]);
354 if (sin->sin_port != 0) {
355 slen += snprintf(cbuf + strlen(cbuf),
356 cbuflen - strlen(cbuf), ":%d",
357 (u_int)ntohs(sin->sin_port));
358 }
359 if (slen >= cbuflen)
360 return (ERANGE);
361 *off += sizeof(*sin);
362 return(0);
363 }
364
365 #if 0
366 case PF_APPLETALK: /* XXX implement these someday */
367 case PF_INET6:
368 case PF_IPX:
369 #endif
370
371 default:
372 return (*ng_ksocket_generic_sockaddr_type.supertype->unparse)
373 (&ng_ksocket_generic_sockaddr_type,
374 data, off, cbuf, cbuflen);
375 }
376 }
377
378 /* Parse type for struct sockaddr */
379 static const struct ng_parse_type ng_ksocket_sockaddr_type = {
380 NULL,
381 NULL,
382 NULL,
383 &ng_ksocket_sockaddr_parse,
384 &ng_ksocket_sockaddr_unparse,
385 NULL /* no such thing as a default struct sockaddr */
386 };
387
388 /************************************************************************
389 STRUCT NG_KSOCKET_SOCKOPT PARSE TYPE
390 ************************************************************************/
391
392 /* Get length of the struct ng_ksocket_sockopt value field, which is the
393 just the excess of the message argument portion over the length of
394 the struct ng_ksocket_sockopt. */
395 static int
396 ng_parse_sockoptval_getLength(const struct ng_parse_type *type,
397 const u_char *start, const u_char *buf)
398 {
399 static const int offset = OFFSETOF(struct ng_ksocket_sockopt, value);
400 const struct ng_ksocket_sockopt *sopt;
401 const struct ng_mesg *msg;
402
403 sopt = (const struct ng_ksocket_sockopt *)(buf - offset);
404 msg = (const struct ng_mesg *)((const u_char *)sopt - sizeof(*msg));
405 return msg->header.arglen - sizeof(*sopt);
406 }
407
408 /* Parse type for the option value part of a struct ng_ksocket_sockopt
409 XXX Eventually, we should handle the different socket options specially.
410 XXX This would avoid byte order problems, eg an integer value of 1 is
411 XXX going to be "[1]" for little endian or "[3=1]" for big endian. */
412 static const struct ng_parse_type ng_ksocket_sockoptval_type = {
413 &ng_parse_bytearray_type,
414 &ng_parse_sockoptval_getLength
415 };
416
417 /* Parse type for struct ng_ksocket_sockopt */
418 static const struct ng_parse_struct_field ng_ksocket_sockopt_type_fields[]
419 = NG_KSOCKET_SOCKOPT_INFO(&ng_ksocket_sockoptval_type);
420 static const struct ng_parse_type ng_ksocket_sockopt_type = {
421 &ng_parse_struct_type,
422 &ng_ksocket_sockopt_type_fields
423 };
424
425 /* Parse type for struct ng_ksocket_accept */
426 static const struct ng_parse_struct_field ng_ksocket_accept_type_fields[]
427 = NGM_KSOCKET_ACCEPT_INFO;
428 static const struct ng_parse_type ng_ksocket_accept_type = {
429 &ng_parse_struct_type,
430 &ng_ksocket_accept_type_fields
431 };
432
433 /* List of commands and how to convert arguments to/from ASCII */
434 static const struct ng_cmdlist ng_ksocket_cmds[] = {
435 {
436 NGM_KSOCKET_COOKIE,
437 NGM_KSOCKET_BIND,
438 "bind",
439 &ng_ksocket_sockaddr_type,
440 NULL
441 },
442 {
443 NGM_KSOCKET_COOKIE,
444 NGM_KSOCKET_LISTEN,
445 "listen",
446 &ng_parse_int32_type,
447 NULL
448 },
449 {
450 NGM_KSOCKET_COOKIE,
451 NGM_KSOCKET_ACCEPT,
452 "accept",
453 NULL,
454 &ng_ksocket_accept_type
455 },
456 {
457 NGM_KSOCKET_COOKIE,
458 NGM_KSOCKET_CONNECT,
459 "connect",
460 &ng_ksocket_sockaddr_type,
461 &ng_parse_int32_type
462 },
463 {
464 NGM_KSOCKET_COOKIE,
465 NGM_KSOCKET_GETNAME,
466 "getname",
467 NULL,
468 &ng_ksocket_sockaddr_type
469 },
470 {
471 NGM_KSOCKET_COOKIE,
472 NGM_KSOCKET_GETPEERNAME,
473 "getpeername",
474 NULL,
475 &ng_ksocket_sockaddr_type
476 },
477 {
478 NGM_KSOCKET_COOKIE,
479 NGM_KSOCKET_SETOPT,
480 "setopt",
481 &ng_ksocket_sockopt_type,
482 NULL
483 },
484 {
485 NGM_KSOCKET_COOKIE,
486 NGM_KSOCKET_GETOPT,
487 "getopt",
488 &ng_ksocket_sockopt_type,
489 &ng_ksocket_sockopt_type
490 },
491 { 0 }
492 };
493
494 /* Node type descriptor */
495 static struct ng_type ng_ksocket_typestruct = {
496 .version = NG_ABI_VERSION,
497 .name = NG_KSOCKET_NODE_TYPE,
498 .constructor = ng_ksocket_constructor,
499 .rcvmsg = ng_ksocket_rcvmsg,
500 .shutdown = ng_ksocket_shutdown,
501 .newhook = ng_ksocket_newhook,
502 .connect = ng_ksocket_connect,
503 .rcvdata = ng_ksocket_rcvdata,
504 .disconnect = ng_ksocket_disconnect,
505 .cmdlist = ng_ksocket_cmds,
506 };
507 NETGRAPH_INIT(ksocket, &ng_ksocket_typestruct);
508
509 #define ERROUT(x) do { error = (x); goto done; } while (0)
510
511 /************************************************************************
512 NETGRAPH NODE STUFF
513 ************************************************************************/
514
515 /*
516 * Node type constructor
517 * The NODE part is assumed to be all set up.
518 * There is already a reference to the node for us.
519 */
520 static int
521 ng_ksocket_constructor(node_p node)
522 {
523 priv_p priv;
524
525 /* Allocate private structure */
526 priv = malloc(sizeof(*priv), M_NETGRAPH_KSOCKET, M_WAITOK | M_ZERO);
527
528 LIST_INIT(&priv->embryos);
529 /* cross link them */
530 priv->node = node;
531 NG_NODE_SET_PRIVATE(node, priv);
532
533 /* Done */
534 return (0);
535 }
536
537 /*
538 * Give our OK for a hook to be added. The hook name is of the
539 * form "<family>/<type>/<proto>" where the three components may
540 * be decimal numbers or else aliases from the above lists.
541 *
542 * Connecting a hook amounts to opening the socket. Disconnecting
543 * the hook closes the socket and destroys the node as well.
544 */
545 static int
546 ng_ksocket_newhook(node_p node, hook_p hook, const char *name0)
547 {
548 struct thread *td = curthread; /* XXX broken */
549 const priv_p priv = NG_NODE_PRIVATE(node);
550 char *s1, *s2, name[NG_HOOKSIZ];
551 int family, type, protocol, error;
552
553 /* Check if we're already connected */
554 if (priv->hook != NULL)
555 return (EISCONN);
556
557 if (priv->flags & KSF_CLONED) {
558 if (priv->flags & KSF_EMBRYONIC) {
559 /* Remove ourselves from our parent's embryo list */
560 LIST_REMOVE(priv, siblings);
561 priv->flags &= ~KSF_EMBRYONIC;
562 }
563 } else {
564 /* Extract family, type, and protocol from hook name */
565 snprintf(name, sizeof(name), "%s", name0);
566 s1 = name;
567 if ((s2 = index(s1, '/')) == NULL)
568 return (EINVAL);
569 *s2++ = '\0';
570 family = ng_ksocket_parse(ng_ksocket_families, s1, 0);
571 if (family == -1)
572 return (EINVAL);
573 s1 = s2;
574 if ((s2 = index(s1, '/')) == NULL)
575 return (EINVAL);
576 *s2++ = '\0';
577 type = ng_ksocket_parse(ng_ksocket_types, s1, 0);
578 if (type == -1)
579 return (EINVAL);
580 s1 = s2;
581 protocol = ng_ksocket_parse(ng_ksocket_protos, s1, family);
582 if (protocol == -1)
583 return (EINVAL);
584
585 /* Create the socket */
586 error = socreate(family, &priv->so, type, protocol,
587 td->td_ucred, td);
588 if (error != 0)
589 return (error);
590
591 /* XXX call soreserve() ? */
592
593 }
594
595 /* OK */
596 priv->hook = hook;
597
598 /*
599 * In case of misconfigured routing a packet may reenter
600 * ksocket node recursively. Decouple stack to avoid possible
601 * panics about sleeping with locks held.
602 */
603 NG_HOOK_FORCE_QUEUE(hook);
604
605 return(0);
606 }
607
608 static int
609 ng_ksocket_connect(hook_p hook)
610 {
611 node_p node = NG_HOOK_NODE(hook);
612 const priv_p priv = NG_NODE_PRIVATE(node);
613 struct socket *const so = priv->so;
614
615 /* Add our hook for incoming data and other events */
616 SOCKBUF_LOCK(&priv->so->so_rcv);
617 soupcall_set(priv->so, SO_RCV, ng_ksocket_incoming, node);
618 SOCKBUF_UNLOCK(&priv->so->so_rcv);
619 SOCKBUF_LOCK(&priv->so->so_snd);
620 soupcall_set(priv->so, SO_SND, ng_ksocket_incoming, node);
621 SOCKBUF_UNLOCK(&priv->so->so_snd);
622 SOCK_LOCK(priv->so);
623 priv->so->so_state |= SS_NBIO;
624 SOCK_UNLOCK(priv->so);
625 /*
626 * --Original comment--
627 * On a cloned socket we may have already received one or more
628 * upcalls which we couldn't handle without a hook. Handle
629 * those now.
630 * We cannot call the upcall function directly
631 * from here, because until this function has returned our
632 * hook isn't connected.
633 *
634 * ---meta comment for -current ---
635 * XXX This is dubius.
636 * Upcalls between the time that the hook was
637 * first created and now (on another processesor) will
638 * be earlier on the queue than the request to finalise the hook.
639 * By the time the hook is finalised,
640 * The queued upcalls will have happenned and the code
641 * will have discarded them because of a lack of a hook.
642 * (socket not open).
643 *
644 * This is a bad byproduct of the complicated way in which hooks
645 * are now created (3 daisy chained async events).
646 *
647 * Since we are a netgraph operation
648 * We know that we hold a lock on this node. This forces the
649 * request we make below to be queued rather than implemented
650 * immediatly which will cause the upcall function to be called a bit
651 * later.
652 * However, as we will run any waiting queued operations immediatly
653 * after doing this one, if we have not finalised the other end
654 * of the hook, those queued operations will fail.
655 */
656 if (priv->flags & KSF_CLONED) {
657 ng_send_fn(node, NULL, &ng_ksocket_incoming2, so, M_NOWAIT);
658 }
659
660 return (0);
661 }
662
663 /*
664 * Receive a control message
665 */
666 static int
667 ng_ksocket_rcvmsg(node_p node, item_p item, hook_p lasthook)
668 {
669 struct thread *td = curthread; /* XXX broken */
670 const priv_p priv = NG_NODE_PRIVATE(node);
671 struct socket *const so = priv->so;
672 struct ng_mesg *resp = NULL;
673 int error = 0;
674 struct ng_mesg *msg;
675 ng_ID_t raddr;
676
677 NGI_GET_MSG(item, msg);
678 switch (msg->header.typecookie) {
679 case NGM_KSOCKET_COOKIE:
680 switch (msg->header.cmd) {
681 case NGM_KSOCKET_BIND:
682 {
683 struct sockaddr *const sa
684 = (struct sockaddr *)msg->data;
685
686 /* Sanity check */
687 if (msg->header.arglen < SADATA_OFFSET
688 || msg->header.arglen < sa->sa_len)
689 ERROUT(EINVAL);
690 if (so == NULL)
691 ERROUT(ENXIO);
692
693 /* Bind */
694 error = sobind(so, sa, td);
695 break;
696 }
697 case NGM_KSOCKET_LISTEN:
698 {
699 /* Sanity check */
700 if (msg->header.arglen != sizeof(int32_t))
701 ERROUT(EINVAL);
702 if (so == NULL)
703 ERROUT(ENXIO);
704
705 /* Listen */
706 error = solisten(so, *((int32_t *)msg->data), td);
707 break;
708 }
709
710 case NGM_KSOCKET_ACCEPT:
711 {
712 /* Sanity check */
713 if (msg->header.arglen != 0)
714 ERROUT(EINVAL);
715 if (so == NULL)
716 ERROUT(ENXIO);
717
718 /* Make sure the socket is capable of accepting */
719 if (!(so->so_options & SO_ACCEPTCONN))
720 ERROUT(EINVAL);
721 if (priv->flags & KSF_ACCEPTING)
722 ERROUT(EALREADY);
723
724 error = ng_ksocket_check_accept(priv);
725 if (error != 0 && error != EWOULDBLOCK)
726 ERROUT(error);
727
728 /*
729 * If a connection is already complete, take it.
730 * Otherwise let the upcall function deal with
731 * the connection when it comes in.
732 */
733 priv->response_token = msg->header.token;
734 raddr = priv->response_addr = NGI_RETADDR(item);
735 if (error == 0) {
736 ng_ksocket_finish_accept(priv);
737 } else
738 priv->flags |= KSF_ACCEPTING;
739 break;
740 }
741
742 case NGM_KSOCKET_CONNECT:
743 {
744 struct sockaddr *const sa
745 = (struct sockaddr *)msg->data;
746
747 /* Sanity check */
748 if (msg->header.arglen < SADATA_OFFSET
749 || msg->header.arglen < sa->sa_len)
750 ERROUT(EINVAL);
751 if (so == NULL)
752 ERROUT(ENXIO);
753
754 /* Do connect */
755 if ((so->so_state & SS_ISCONNECTING) != 0)
756 ERROUT(EALREADY);
757 if ((error = soconnect(so, sa, td)) != 0) {
758 so->so_state &= ~SS_ISCONNECTING;
759 ERROUT(error);
760 }
761 if ((so->so_state & SS_ISCONNECTING) != 0) {
762 /* We will notify the sender when we connect */
763 priv->response_token = msg->header.token;
764 raddr = priv->response_addr = NGI_RETADDR(item);
765 priv->flags |= KSF_CONNECTING;
766 ERROUT(EINPROGRESS);
767 }
768 break;
769 }
770
771 case NGM_KSOCKET_GETNAME:
772 case NGM_KSOCKET_GETPEERNAME:
773 {
774 int (*func)(struct socket *so, struct sockaddr **nam);
775 struct sockaddr *sa = NULL;
776 int len;
777
778 /* Sanity check */
779 if (msg->header.arglen != 0)
780 ERROUT(EINVAL);
781 if (so == NULL)
782 ERROUT(ENXIO);
783
784 /* Get function */
785 if (msg->header.cmd == NGM_KSOCKET_GETPEERNAME) {
786 if ((so->so_state
787 & (SS_ISCONNECTED|SS_ISCONFIRMING)) == 0)
788 ERROUT(ENOTCONN);
789 func = so->so_proto->pr_usrreqs->pru_peeraddr;
790 } else
791 func = so->so_proto->pr_usrreqs->pru_sockaddr;
792
793 /* Get local or peer address */
794 if ((error = (*func)(so, &sa)) != 0)
795 goto bail;
796 len = (sa == NULL) ? 0 : sa->sa_len;
797
798 /* Send it back in a response */
799 NG_MKRESPONSE(resp, msg, len, M_NOWAIT);
800 if (resp == NULL) {
801 error = ENOMEM;
802 goto bail;
803 }
804 bcopy(sa, resp->data, len);
805
806 bail:
807 /* Cleanup */
808 if (sa != NULL)
809 free(sa, M_SONAME);
810 break;
811 }
812
813 case NGM_KSOCKET_GETOPT:
814 {
815 struct ng_ksocket_sockopt *ksopt =
816 (struct ng_ksocket_sockopt *)msg->data;
817 struct sockopt sopt;
818
819 /* Sanity check */
820 if (msg->header.arglen != sizeof(*ksopt))
821 ERROUT(EINVAL);
822 if (so == NULL)
823 ERROUT(ENXIO);
824
825 /* Get response with room for option value */
826 NG_MKRESPONSE(resp, msg, sizeof(*ksopt)
827 + NG_KSOCKET_MAX_OPTLEN, M_NOWAIT);
828 if (resp == NULL)
829 ERROUT(ENOMEM);
830
831 /* Get socket option, and put value in the response */
832 sopt.sopt_dir = SOPT_GET;
833 sopt.sopt_level = ksopt->level;
834 sopt.sopt_name = ksopt->name;
835 sopt.sopt_td = NULL;
836 sopt.sopt_valsize = NG_KSOCKET_MAX_OPTLEN;
837 ksopt = (struct ng_ksocket_sockopt *)resp->data;
838 sopt.sopt_val = ksopt->value;
839 if ((error = sogetopt(so, &sopt)) != 0) {
840 NG_FREE_MSG(resp);
841 break;
842 }
843
844 /* Set actual value length */
845 resp->header.arglen = sizeof(*ksopt)
846 + sopt.sopt_valsize;
847 break;
848 }
849
850 case NGM_KSOCKET_SETOPT:
851 {
852 struct ng_ksocket_sockopt *const ksopt =
853 (struct ng_ksocket_sockopt *)msg->data;
854 const int valsize = msg->header.arglen - sizeof(*ksopt);
855 struct sockopt sopt;
856
857 /* Sanity check */
858 if (valsize < 0)
859 ERROUT(EINVAL);
860 if (so == NULL)
861 ERROUT(ENXIO);
862
863 /* Set socket option */
864 sopt.sopt_dir = SOPT_SET;
865 sopt.sopt_level = ksopt->level;
866 sopt.sopt_name = ksopt->name;
867 sopt.sopt_val = ksopt->value;
868 sopt.sopt_valsize = valsize;
869 sopt.sopt_td = NULL;
870 error = sosetopt(so, &sopt);
871 break;
872 }
873
874 default:
875 error = EINVAL;
876 break;
877 }
878 break;
879 default:
880 error = EINVAL;
881 break;
882 }
883 done:
884 NG_RESPOND_MSG(error, node, item, resp);
885 NG_FREE_MSG(msg);
886 return (error);
887 }
888
889 /*
890 * Receive incoming data on our hook. Send it out the socket.
891 */
892 static int
893 ng_ksocket_rcvdata(hook_p hook, item_p item)
894 {
895 struct thread *td = curthread; /* XXX broken */
896 const node_p node = NG_HOOK_NODE(hook);
897 const priv_p priv = NG_NODE_PRIVATE(node);
898 struct socket *const so = priv->so;
899 struct sockaddr *sa = NULL;
900 int error;
901 struct mbuf *m;
902 #ifdef ALIGNED_POINTER
903 struct mbuf *n;
904 #endif /* ALIGNED_POINTER */
905 struct sa_tag *stag;
906
907 /* Extract data */
908 NGI_GET_M(item, m);
909 NG_FREE_ITEM(item);
910 #ifdef ALIGNED_POINTER
911 if (!ALIGNED_POINTER(mtod(m, caddr_t), uint32_t)) {
912 n = m_defrag(m, M_NOWAIT);
913 if (n == NULL) {
914 m_freem(m);
915 return (ENOBUFS);
916 }
917 m = n;
918 }
919 #endif /* ALIGNED_POINTER */
920 /*
921 * Look if socket address is stored in packet tags.
922 * If sockaddr is ours, or provided by a third party (zero id),
923 * then we accept it.
924 */
925 if (((stag = (struct sa_tag *)m_tag_locate(m, NGM_KSOCKET_COOKIE,
926 NG_KSOCKET_TAG_SOCKADDR, NULL)) != NULL) &&
927 (stag->id == NG_NODE_ID(node) || stag->id == 0))
928 sa = &stag->sa;
929
930 /* Reset specific mbuf flags to prevent addressing problems. */
931 m->m_flags &= ~(M_BCAST|M_MCAST);
932
933 /* Send packet */
934 error = sosend(so, sa, 0, m, 0, 0, td);
935
936 return (error);
937 }
938
939 /*
940 * Destroy node
941 */
942 static int
943 ng_ksocket_shutdown(node_p node)
944 {
945 const priv_p priv = NG_NODE_PRIVATE(node);
946 priv_p embryo;
947
948 /* Close our socket (if any) */
949 if (priv->so != NULL) {
950 SOCKBUF_LOCK(&priv->so->so_rcv);
951 soupcall_clear(priv->so, SO_RCV);
952 SOCKBUF_UNLOCK(&priv->so->so_rcv);
953 SOCKBUF_LOCK(&priv->so->so_snd);
954 soupcall_clear(priv->so, SO_SND);
955 SOCKBUF_UNLOCK(&priv->so->so_snd);
956 soclose(priv->so);
957 priv->so = NULL;
958 }
959
960 /* If we are an embryo, take ourselves out of the parent's list */
961 if (priv->flags & KSF_EMBRYONIC) {
962 LIST_REMOVE(priv, siblings);
963 priv->flags &= ~KSF_EMBRYONIC;
964 }
965
966 /* Remove any embryonic children we have */
967 while (!LIST_EMPTY(&priv->embryos)) {
968 embryo = LIST_FIRST(&priv->embryos);
969 ng_rmnode_self(embryo->node);
970 }
971
972 /* Take down netgraph node */
973 bzero(priv, sizeof(*priv));
974 free(priv, M_NETGRAPH_KSOCKET);
975 NG_NODE_SET_PRIVATE(node, NULL);
976 NG_NODE_UNREF(node); /* let the node escape */
977 return (0);
978 }
979
980 /*
981 * Hook disconnection
982 */
983 static int
984 ng_ksocket_disconnect(hook_p hook)
985 {
986 KASSERT(NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0,
987 ("%s: numhooks=%d?", __func__,
988 NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook))));
989 if (NG_NODE_IS_VALID(NG_HOOK_NODE(hook)))
990 ng_rmnode_self(NG_HOOK_NODE(hook));
991 return (0);
992 }
993
994 /************************************************************************
995 HELPER STUFF
996 ************************************************************************/
997 /*
998 * You should not "just call" a netgraph node function from an external
999 * asynchronous event. This is because in doing so you are ignoring the
1000 * locking on the netgraph nodes. Instead call your function via ng_send_fn().
1001 * This will call the function you chose, but will first do all the
1002 * locking rigmarole. Your function MAY only be called at some distant future
1003 * time (several millisecs away) so don't give it any arguments
1004 * that may be revoked soon (e.g. on your stack).
1005 *
1006 * To decouple stack, we use queue version of ng_send_fn().
1007 */
1008
1009 static int
1010 ng_ksocket_incoming(struct socket *so, void *arg, int waitflag)
1011 {
1012 const node_p node = arg;
1013 const priv_p priv = NG_NODE_PRIVATE(node);
1014 int wait = ((waitflag & M_WAITOK) ? NG_WAITOK : 0) | NG_QUEUE;
1015
1016 /*
1017 * Even if node is not locked, as soon as we are called, we assume
1018 * it exist and it's private area is valid. With some care we can
1019 * access it. Mark node that incoming event for it was sent to
1020 * avoid unneded queue trashing.
1021 */
1022 if (atomic_cmpset_int(&priv->fn_sent, 0, 1) &&
1023 ng_send_fn1(node, NULL, &ng_ksocket_incoming2, so, 0, wait)) {
1024 atomic_store_rel_int(&priv->fn_sent, 0);
1025 }
1026 return (SU_OK);
1027 }
1028
1029
1030 /*
1031 * When incoming data is appended to the socket, we get notified here.
1032 * This is also called whenever a significant event occurs for the socket.
1033 * Our original caller may have queued this even some time ago and
1034 * we cannot trust that he even still exists. The node however is being
1035 * held with a reference by the queueing code and guarantied to be valid.
1036 */
1037 static void
1038 ng_ksocket_incoming2(node_p node, hook_p hook, void *arg1, int arg2)
1039 {
1040 struct socket *so = arg1;
1041 const priv_p priv = NG_NODE_PRIVATE(node);
1042 struct mbuf *m;
1043 struct ng_mesg *response;
1044 struct uio auio;
1045 int s, flags, error;
1046
1047 s = splnet();
1048
1049 /* so = priv->so; *//* XXX could have derived this like so */
1050 KASSERT(so == priv->so, ("%s: wrong socket", __func__));
1051
1052 /* Allow next incoming event to be queued. */
1053 atomic_store_rel_int(&priv->fn_sent, 0);
1054
1055 /* Check whether a pending connect operation has completed */
1056 if (priv->flags & KSF_CONNECTING) {
1057 if ((error = so->so_error) != 0) {
1058 so->so_error = 0;
1059 so->so_state &= ~SS_ISCONNECTING;
1060 }
1061 if (!(so->so_state & SS_ISCONNECTING)) {
1062 NG_MKMESSAGE(response, NGM_KSOCKET_COOKIE,
1063 NGM_KSOCKET_CONNECT, sizeof(int32_t), M_NOWAIT);
1064 if (response != NULL) {
1065 response->header.flags |= NGF_RESP;
1066 response->header.token = priv->response_token;
1067 *(int32_t *)response->data = error;
1068 /*
1069 * send an async "response" message
1070 * to the node that set us up
1071 * (if it still exists)
1072 */
1073 NG_SEND_MSG_ID(error, node,
1074 response, priv->response_addr, 0);
1075 }
1076 priv->flags &= ~KSF_CONNECTING;
1077 }
1078 }
1079
1080 /* Check whether a pending accept operation has completed */
1081 if (priv->flags & KSF_ACCEPTING) {
1082 error = ng_ksocket_check_accept(priv);
1083 if (error != EWOULDBLOCK)
1084 priv->flags &= ~KSF_ACCEPTING;
1085 if (error == 0)
1086 ng_ksocket_finish_accept(priv);
1087 }
1088
1089 /*
1090 * If we don't have a hook, we must handle data events later. When
1091 * the hook gets created and is connected, this upcall function
1092 * will be called again.
1093 */
1094 if (priv->hook == NULL) {
1095 splx(s);
1096 return;
1097 }
1098
1099 /* Read and forward available mbuf's */
1100 auio.uio_td = NULL;
1101 auio.uio_resid = 1000000000;
1102 flags = MSG_DONTWAIT;
1103 while (1) {
1104 struct sockaddr *sa = NULL;
1105 struct mbuf *n;
1106
1107 /* Try to get next packet from socket */
1108 if ((error = soreceive(so, (so->so_state & SS_ISCONNECTED) ?
1109 NULL : &sa, &auio, &m, (struct mbuf **)0, &flags)) != 0)
1110 break;
1111
1112 /* See if we got anything */
1113 if (m == NULL) {
1114 if (sa != NULL)
1115 free(sa, M_SONAME);
1116 break;
1117 }
1118
1119 /*
1120 * Don't trust the various socket layers to get the
1121 * packet header and length correct (e.g. kern/15175).
1122 *
1123 * Also, do not trust that soreceive() will clear m_nextpkt
1124 * for us (e.g. kern/84952, kern/82413).
1125 */
1126 m->m_pkthdr.csum_flags = 0;
1127 for (n = m, m->m_pkthdr.len = 0; n != NULL; n = n->m_next) {
1128 m->m_pkthdr.len += n->m_len;
1129 n->m_nextpkt = NULL;
1130 }
1131
1132 /* Put peer's socket address (if any) into a tag */
1133 if (sa != NULL) {
1134 struct sa_tag *stag;
1135
1136 stag = (struct sa_tag *)m_tag_alloc(NGM_KSOCKET_COOKIE,
1137 NG_KSOCKET_TAG_SOCKADDR, sizeof(ng_ID_t) +
1138 sa->sa_len, M_NOWAIT);
1139 if (stag == NULL) {
1140 free(sa, M_SONAME);
1141 goto sendit;
1142 }
1143 bcopy(sa, &stag->sa, sa->sa_len);
1144 free(sa, M_SONAME);
1145 stag->id = NG_NODE_ID(node);
1146 m_tag_prepend(m, &stag->tag);
1147 }
1148
1149 sendit: /* Forward data with optional peer sockaddr as packet tag */
1150 NG_SEND_DATA_ONLY(error, priv->hook, m);
1151 }
1152
1153 /*
1154 * If the peer has closed the connection, forward a 0-length mbuf
1155 * to indicate end-of-file.
1156 */
1157 if (so->so_rcv.sb_state & SBS_CANTRCVMORE && !(priv->flags & KSF_EOFSEEN)) {
1158 MGETHDR(m, M_NOWAIT, MT_DATA);
1159 if (m != NULL) {
1160 m->m_len = m->m_pkthdr.len = 0;
1161 NG_SEND_DATA_ONLY(error, priv->hook, m);
1162 }
1163 priv->flags |= KSF_EOFSEEN;
1164 }
1165 splx(s);
1166 }
1167
1168 /*
1169 * Check for a completed incoming connection and return 0 if one is found.
1170 * Otherwise return the appropriate error code.
1171 */
1172 static int
1173 ng_ksocket_check_accept(priv_p priv)
1174 {
1175 struct socket *const head = priv->so;
1176 int error;
1177
1178 if ((error = head->so_error) != 0) {
1179 head->so_error = 0;
1180 return error;
1181 }
1182 /* Unlocked read. */
1183 if (TAILQ_EMPTY(&head->so_comp)) {
1184 if (head->so_rcv.sb_state & SBS_CANTRCVMORE)
1185 return ECONNABORTED;
1186 return EWOULDBLOCK;
1187 }
1188 return 0;
1189 }
1190
1191 /*
1192 * Handle the first completed incoming connection, assumed to be already
1193 * on the socket's so_comp queue.
1194 */
1195 static void
1196 ng_ksocket_finish_accept(priv_p priv)
1197 {
1198 struct socket *const head = priv->so;
1199 struct socket *so;
1200 struct sockaddr *sa = NULL;
1201 struct ng_mesg *resp;
1202 struct ng_ksocket_accept *resp_data;
1203 node_p node;
1204 priv_p priv2;
1205 int len;
1206 int error;
1207
1208 ACCEPT_LOCK();
1209 so = TAILQ_FIRST(&head->so_comp);
1210 if (so == NULL) { /* Should never happen */
1211 ACCEPT_UNLOCK();
1212 return;
1213 }
1214 TAILQ_REMOVE(&head->so_comp, so, so_list);
1215 head->so_qlen--;
1216 so->so_qstate &= ~SQ_COMP;
1217 so->so_head = NULL;
1218 SOCK_LOCK(so);
1219 soref(so);
1220 so->so_state |= SS_NBIO;
1221 SOCK_UNLOCK(so);
1222 ACCEPT_UNLOCK();
1223
1224 /* XXX KNOTE_UNLOCKED(&head->so_rcv.sb_sel.si_note, 0); */
1225
1226 soaccept(so, &sa);
1227
1228 len = OFFSETOF(struct ng_ksocket_accept, addr);
1229 if (sa != NULL)
1230 len += sa->sa_len;
1231
1232 NG_MKMESSAGE(resp, NGM_KSOCKET_COOKIE, NGM_KSOCKET_ACCEPT, len,
1233 M_NOWAIT);
1234 if (resp == NULL) {
1235 soclose(so);
1236 goto out;
1237 }
1238 resp->header.flags |= NGF_RESP;
1239 resp->header.token = priv->response_token;
1240
1241 /* Clone a ksocket node to wrap the new socket */
1242 error = ng_make_node_common(&ng_ksocket_typestruct, &node);
1243 if (error) {
1244 free(resp, M_NETGRAPH);
1245 soclose(so);
1246 goto out;
1247 }
1248
1249 if (ng_ksocket_constructor(node) != 0) {
1250 NG_NODE_UNREF(node);
1251 free(resp, M_NETGRAPH);
1252 soclose(so);
1253 goto out;
1254 }
1255
1256 priv2 = NG_NODE_PRIVATE(node);
1257 priv2->so = so;
1258 priv2->flags |= KSF_CLONED | KSF_EMBRYONIC;
1259
1260 /*
1261 * Insert the cloned node into a list of embryonic children
1262 * on the parent node. When a hook is created on the cloned
1263 * node it will be removed from this list. When the parent
1264 * is destroyed it will destroy any embryonic children it has.
1265 */
1266 LIST_INSERT_HEAD(&priv->embryos, priv2, siblings);
1267
1268 SOCKBUF_LOCK(&so->so_rcv);
1269 soupcall_set(so, SO_RCV, ng_ksocket_incoming, node);
1270 SOCKBUF_UNLOCK(&so->so_rcv);
1271 SOCKBUF_LOCK(&so->so_snd);
1272 soupcall_set(so, SO_SND, ng_ksocket_incoming, node);
1273 SOCKBUF_UNLOCK(&so->so_snd);
1274
1275 /* Fill in the response data and send it or return it to the caller */
1276 resp_data = (struct ng_ksocket_accept *)resp->data;
1277 resp_data->nodeid = NG_NODE_ID(node);
1278 if (sa != NULL)
1279 bcopy(sa, &resp_data->addr, sa->sa_len);
1280 NG_SEND_MSG_ID(error, node, resp, priv->response_addr, 0);
1281
1282 out:
1283 if (sa != NULL)
1284 free(sa, M_SONAME);
1285 }
1286
1287 /*
1288 * Parse out either an integer value or an alias.
1289 */
1290 static int
1291 ng_ksocket_parse(const struct ng_ksocket_alias *aliases,
1292 const char *s, int family)
1293 {
1294 int k, val;
1295 char *eptr;
1296
1297 /* Try aliases */
1298 for (k = 0; aliases[k].name != NULL; k++) {
1299 if (strcmp(s, aliases[k].name) == 0
1300 && aliases[k].family == family)
1301 return aliases[k].value;
1302 }
1303
1304 /* Try parsing as a number */
1305 val = (int)strtoul(s, &eptr, 10);
1306 if (val < 0 || *eptr != '\0')
1307 return (-1);
1308 return (val);
1309 }
1310
Cache object: 87cfa04bd872ed968471af9801a77ffc
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