git.oblomov.eu Git - linux-2.6/blob - arch/sparc64/solaris/timod.c

   1 /* $Id: timod.c,v 1.19 2002/02/08 03:57:14 davem Exp $
   2  * timod.c: timod emulation.
   3  *
   4  * Copyright (C) 1998 Patrik Rak (prak3264@ss1000.ms.mff.cuni.cz)
   5  *
   6  * Streams & timod emulation based on code
   7  * Copyright (C) 1995, 1996 Mike Jagdis (jaggy@purplet.demon.co.uk)
   8  *
   9  */
  10
  11 #include <linux/types.h>
  12 #include <linux/kernel.h>
  13 #include <linux/sched.h>
  14 #include <linux/smp.h>
  15 #include <linux/smp_lock.h>
  16 #include <linux/ioctl.h>
  17 #include <linux/fs.h>
  18 #include <linux/file.h>
  19 #include <linux/netdevice.h>
  20 #include <linux/poll.h>
  21
  22 #include <net/sock.h>
  23
  24 #include <asm/uaccess.h>
  25 #include <asm/termios.h>
  26
  27 #include "conv.h"
  28 #include "socksys.h"
  29
  30 asmlinkage int solaris_ioctl(unsigned int fd, unsigned int cmd, u32 arg);
  31
  32 static DEFINE_SPINLOCK(timod_pagelock);
  33 static char * page = NULL ;
  34
  35 #ifndef DEBUG_SOLARIS_KMALLOC
  36
  37 #define mykmalloc kmalloc
  38 #define mykfree kfree
  39
  40 #else
  41
  42 void * mykmalloc(size_t s, int gfp)
  43 {
  44         static char * page;
  45         static size_t free;
  46         void * r;
  47         s = ((s + 63) & ~63);
  48         if( s > PAGE_SIZE ) {
  49                 SOLD("too big size, calling real kmalloc");
  50                 return kmalloc(s, gfp);
  51         }
  52         if( s > free ) {
  53                 /* we are wasting memory, but we don't care */
  54                 page = (char *)__get_free_page(gfp);
  55                 free = PAGE_SIZE;
  56         }
  57         r = page;
  58         page += s;
  59         free -= s;
  60         return r;
  61 }
  62
  63 void mykfree(void *p)
  64 {
  65 }
  66
  67 #endif
  68
  69 #ifndef DEBUG_SOLARIS
  70
  71 #define BUF_SIZE        PAGE_SIZE
  72 #define PUT_MAGIC(a,m)
  73 #define SCHECK_MAGIC(a,m)
  74 #define BUF_OFFSET      0
  75 #define MKCTL_TRAILER   0
  76
  77 #else
  78
  79 #define BUF_SIZE        (PAGE_SIZE-2*sizeof(u64))
  80 #define BUFPAGE_MAGIC   0xBADC0DEDDEADBABEL
  81 #define MKCTL_MAGIC     0xDEADBABEBADC0DEDL
  82 #define PUT_MAGIC(a,m)  do{(*(u64*)(a))=(m);}while(0)
  83 #define SCHECK_MAGIC(a,m)       do{if((*(u64*)(a))!=(m))printk("%s,%u,%s(): magic %08x at %p corrupted!\n",\
  84                                 __FILE__,__LINE__,__FUNCTION__,(m),(a));}while(0)
  85 #define BUF_OFFSET      sizeof(u64)
  86 #define MKCTL_TRAILER   sizeof(u64)
  87
  88 #endif
  89
  90 static char *getpage( void )
  91 {
  92         char *r;
  93         SOLD("getting page");
  94         spin_lock(&timod_pagelock);
  95         if (page) {
  96                 r = page;
  97                 page = NULL;
  98                 spin_unlock(&timod_pagelock);
  99                 SOLD("got cached");
 100                 return r + BUF_OFFSET;
 101         }
 102         spin_unlock(&timod_pagelock);
 103         SOLD("getting new");
 104         r = (char *)__get_free_page(GFP_KERNEL);
 105         PUT_MAGIC(r,BUFPAGE_MAGIC);
 106         PUT_MAGIC(r+PAGE_SIZE-sizeof(u64),BUFPAGE_MAGIC);
 107         return r + BUF_OFFSET;
 108 }
 109
 110 static void putpage(char *p)
 111 {
 112         SOLD("putting page");
 113         p = p - BUF_OFFSET;
 114         SCHECK_MAGIC(p,BUFPAGE_MAGIC);
 115         SCHECK_MAGIC(p+PAGE_SIZE-sizeof(u64),BUFPAGE_MAGIC);
 116         spin_lock(&timod_pagelock);
 117         if (page) {
 118                 spin_unlock(&timod_pagelock);
 119                 free_page((unsigned long)p);
 120                 SOLD("freed it");
 121         } else {
 122                 page = p;
 123                 spin_unlock(&timod_pagelock);
 124                 SOLD("cached it");
 125         }
 126 }
 127
 128 static struct T_primsg *timod_mkctl(int size)
 129 {
 130         struct T_primsg *it;
 131
 132         SOLD("creating primsg");
 133         it = (struct T_primsg *)mykmalloc(size+sizeof(*it)-sizeof(s32)+2*MKCTL_TRAILER, GFP_KERNEL);
 134         if (it) {
 135                 SOLD("got it");
 136                 it->pri = MSG_HIPRI;
 137                 it->length = size;
 138                 PUT_MAGIC((char*)((u64)(((char *)&it->type)+size+7)&~7),MKCTL_MAGIC);
 139         }
 140         return it;
 141 }
 142
 143 static void timod_wake_socket(unsigned int fd)
 144 {
 145         struct socket *sock;
 146
 147         SOLD("wakeing socket");
 148         sock = SOCKET_I(current->files->fd[fd]->f_dentry->d_inode);
 149         wake_up_interruptible(&sock->wait);
 150         read_lock(&sock->sk->sk_callback_lock);
 151         if (sock->fasync_list && !test_bit(SOCK_ASYNC_WAITDATA, &sock->flags))
 152                 __kill_fasync(sock->fasync_list, SIGIO, POLL_IN);
 153         read_unlock(&sock->sk->sk_callback_lock);
 154         SOLD("done");
 155 }
 156
 157 static void timod_queue(unsigned int fd, struct T_primsg *it)
 158 {
 159         struct sol_socket_struct *sock;
 160
 161         SOLD("queuing primsg");
 162         sock = (struct sol_socket_struct *)current->files->fd[fd]->private_data;
 163         it->next = sock->pfirst;
 164         sock->pfirst = it;
 165         if (!sock->plast)
 166                 sock->plast = it;
 167         timod_wake_socket(fd);
 168         SOLD("done");
 169 }
 170
 171 static void timod_queue_end(unsigned int fd, struct T_primsg *it)
 172 {
 173         struct sol_socket_struct *sock;
 174
 175         SOLD("queuing primsg at end");
 176         sock = (struct sol_socket_struct *)current->files->fd[fd]->private_data;
 177         it->next = NULL;
 178         if (sock->plast)
 179                 sock->plast->next = it;
 180         else
 181                 sock->pfirst = it;
 182         sock->plast = it;
 183         SOLD("done");
 184 }
 185
 186 static void timod_error(unsigned int fd, int prim, int terr, int uerr)
 187 {
 188         struct T_primsg *it;
 189
 190         SOLD("making error");
 191         it = timod_mkctl(sizeof(struct T_error_ack));
 192         if (it) {
 193                 struct T_error_ack *err = (struct T_error_ack *)&it->type;
 194
 195                 SOLD("got it");
 196                 err->PRIM_type = T_ERROR_ACK;
 197                 err->ERROR_prim = prim;
 198                 err->TLI_error = terr;
 199                 err->UNIX_error = uerr; /* FIXME: convert this */
 200                 timod_queue(fd, it);
 201         }
 202         SOLD("done");
 203 }
 204
 205 static void timod_ok(unsigned int fd, int prim)
 206 {
 207         struct T_primsg *it;
 208         struct T_ok_ack *ok;
 209
 210         SOLD("creating ok ack");
 211         it = timod_mkctl(sizeof(*ok));
 212         if (it) {
 213                 SOLD("got it");
 214                 ok = (struct T_ok_ack *)&it->type;
 215                 ok->PRIM_type = T_OK_ACK;
 216                 ok->CORRECT_prim = prim;
 217                 timod_queue(fd, it);
 218         }
 219         SOLD("done");
 220 }
 221
 222 static int timod_optmgmt(unsigned int fd, int flag, char __user *opt_buf, int opt_len, int do_ret)
 223 {
 224         int error, failed;
 225         int ret_space, ret_len;
 226         long args[5];
 227         char *ret_pos,*ret_buf;
 228         int (*sys_socketcall)(int, unsigned long *) =
 229                 (int (*)(int, unsigned long *))SYS(socketcall);
 230         mm_segment_t old_fs = get_fs();
 231
 232         SOLD("entry");
 233         SOLDD(("fd %u flg %u buf %p len %u doret %u",fd,flag,opt_buf,opt_len,do_ret));
 234         if (!do_ret && (!opt_buf || opt_len <= 0))
 235                 return 0;
 236         SOLD("getting page");
 237         ret_pos = ret_buf = getpage();
 238         ret_space = BUF_SIZE;
 239         ret_len = 0;
 240
 241         error = failed = 0;
 242         SOLD("looping");
 243         while(opt_len >= sizeof(struct opthdr)) {
 244                 struct opthdr *opt;
 245                 int orig_opt_len;
 246                 SOLD("loop start");
 247                 opt = (struct opthdr *)ret_pos;
 248                 if (ret_space < sizeof(struct opthdr)) {
 249                         failed = TSYSERR;
 250                         break;
 251                 }
 252                 SOLD("getting opthdr");
 253                 if (copy_from_user(opt, opt_buf, sizeof(struct opthdr)) ||
 254                         opt->len > opt_len) {
 255                         failed = TBADOPT;
 256                         break;
 257                 }
 258                 SOLD("got opthdr");
 259                 if (flag == T_NEGOTIATE) {
 260                         char *buf;
 261
 262                         SOLD("handling T_NEGOTIATE");
 263                         buf = ret_pos + sizeof(struct opthdr);
 264                         if (ret_space < opt->len + sizeof(struct opthdr) ||
 265                                 copy_from_user(buf, opt_buf+sizeof(struct opthdr), opt->len)) {
 266                                 failed = TSYSERR;
 267                                 break;
 268                         }
 269                         SOLD("got optdata");
 270                         args[0] = fd;
 271                         args[1] = opt->level;
 272                         args[2] = opt->name;
 273                         args[3] = (long)buf;
 274                         args[4] = opt->len;
 275                         SOLD("calling SETSOCKOPT");
 276                         set_fs(KERNEL_DS);
 277                         error = sys_socketcall(SYS_SETSOCKOPT, args);
 278                         set_fs(old_fs);
 279                         if (error) {
 280                                 failed = TBADOPT;
 281                                 break;
 282                         }
 283                         SOLD("SETSOCKOPT ok");
 284                 }
 285                 orig_opt_len = opt->len;
 286                 opt->len = ret_space - sizeof(struct opthdr);
 287                 if (opt->len < 0) {
 288                         failed = TSYSERR;
 289                         break;
 290                 }
 291                 args[0] = fd;
 292                 args[1] = opt->level;
 293                 args[2] = opt->name;
 294                 args[3] = (long)(ret_pos+sizeof(struct opthdr));
 295                 args[4] = (long)&opt->len;
 296                 SOLD("calling GETSOCKOPT");
 297                 set_fs(KERNEL_DS);
 298                 error = sys_socketcall(SYS_GETSOCKOPT, args);
 299                 set_fs(old_fs);
 300                 if (error) {
 301                         failed = TBADOPT;
 302                         break;
 303                 }
 304                 SOLD("GETSOCKOPT ok");
 305                 ret_space -= sizeof(struct opthdr) + opt->len;
 306                 ret_len += sizeof(struct opthdr) + opt->len;
 307                 ret_pos += sizeof(struct opthdr) + opt->len;
 308                 opt_len -= sizeof(struct opthdr) + orig_opt_len;
 309                 opt_buf += sizeof(struct opthdr) + orig_opt_len;
 310                 SOLD("loop end");
 311         }
 312         SOLD("loop done");
 313         if (do_ret) {
 314                 SOLD("generating ret msg");
 315                 if (failed)
 316                         timod_error(fd, T_OPTMGMT_REQ, failed, -error);
 317                 else {
 318                         struct T_primsg *it;
 319                         it = timod_mkctl(sizeof(struct T_optmgmt_ack) + ret_len);
 320                         if (it) {
 321                                 struct T_optmgmt_ack *ack =
 322                                         (struct T_optmgmt_ack *)&it->type;
 323                                 SOLD("got primsg");
 324                                 ack->PRIM_type = T_OPTMGMT_ACK;
 325                                 ack->OPT_length = ret_len;
 326                                 ack->OPT_offset = sizeof(struct T_optmgmt_ack);
 327                                 ack->MGMT_flags = (failed ? T_FAILURE : flag);
 328                                 memcpy(((char*)ack)+sizeof(struct T_optmgmt_ack),
 329                                         ret_buf, ret_len);
 330                                 timod_queue(fd, it);
 331                         }
 332                 }
 333         }
 334         SOLDD(("put_page %p\n", ret_buf));
 335         putpage(ret_buf);
 336         SOLD("done");
 337         return 0;
 338 }
 339
 340 int timod_putmsg(unsigned int fd, char __user *ctl_buf, int ctl_len,
 341                         char __user *data_buf, int data_len, int flags)
 342 {
 343         int ret, error, terror;
 344         char *buf;
 345         struct file *filp;
 346         struct inode *ino;
 347         struct sol_socket_struct *sock;
 348         mm_segment_t old_fs = get_fs();
 349         long args[6];
 350         int (*sys_socketcall)(int, unsigned long __user *) =
 351                 (int (*)(int, unsigned long __user *))SYS(socketcall);
 352         int (*sys_sendto)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int) =
 353                 (int (*)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int))SYS(sendto);
 354         filp = current->files->fd[fd];
 355         ino = filp->f_dentry->d_inode;
 356         sock = (struct sol_socket_struct *)filp->private_data;
 357         SOLD("entry");
 358         if (get_user(ret, (int __user *)A(ctl_buf)))
 359                 return -EFAULT;
 360         switch (ret) {
 361         case T_BIND_REQ:
 362         {
 363                 struct T_bind_req req;
 364
 365                 SOLDD(("bind %016lx(%016lx)\n", sock, filp));
 366                 SOLD("T_BIND_REQ");
 367                 if (sock->state != TS_UNBND) {
 368                         timod_error(fd, T_BIND_REQ, TOUTSTATE, 0);
 369                         return 0;
 370                 }
 371                 SOLD("state ok");
 372                 if (copy_from_user(&req, ctl_buf, sizeof(req))) {
 373                         timod_error(fd, T_BIND_REQ, TSYSERR, EFAULT);
 374                         return 0;
 375                 }
 376                 SOLD("got ctl req");
 377                 if (req.ADDR_offset && req.ADDR_length) {
 378                         if (req.ADDR_length > BUF_SIZE) {
 379                                 timod_error(fd, T_BIND_REQ, TSYSERR, EFAULT);
 380                                 return 0;
 381                         }
 382                         SOLD("req size ok");
 383                         buf = getpage();
 384                         if (copy_from_user(buf, ctl_buf + req.ADDR_offset, req.ADDR_length)) {
 385                                 timod_error(fd, T_BIND_REQ, TSYSERR, EFAULT);
 386                                 putpage(buf);
 387                                 return 0;
 388                         }
 389                         SOLD("got ctl data");
 390                         args[0] = fd;
 391                         args[1] = (long)buf;
 392                         args[2] = req.ADDR_length;
 393                         SOLD("calling BIND");
 394                         set_fs(KERNEL_DS);
 395                         error = sys_socketcall(SYS_BIND, args);
 396                         set_fs(old_fs);
 397                         putpage(buf);
 398                         SOLD("BIND returned");
 399                 } else
 400                         error = 0;
 401                 if (!error) {
 402                         struct T_primsg *it;
 403                         if (req.CONIND_number) {
 404                                 args[0] = fd;
 405                                 args[1] = req.CONIND_number;
 406                                 SOLD("calling LISTEN");
 407                                 set_fs(KERNEL_DS);
 408                                 error = sys_socketcall(SYS_LISTEN, args);
 409                                 set_fs(old_fs);
 410                                 SOLD("LISTEN done");
 411                         }
 412                         it = timod_mkctl(sizeof(struct T_bind_ack)+sizeof(struct sockaddr));
 413                         if (it) {
 414                                 struct T_bind_ack *ack;
 415
 416                                 ack = (struct T_bind_ack *)&it->type;
 417                                 ack->PRIM_type = T_BIND_ACK;
 418                                 ack->ADDR_offset = sizeof(*ack);
 419                                 ack->ADDR_length = sizeof(struct sockaddr);
 420                                 ack->CONIND_number = req.CONIND_number;
 421                                 args[0] = fd;
 422                                 args[1] = (long)(ack+sizeof(*ack));
 423                                 args[2] = (long)&ack->ADDR_length;
 424                                 set_fs(KERNEL_DS);
 425                                 sys_socketcall(SYS_GETSOCKNAME,args);
 426                                 set_fs(old_fs);
 427                                 sock->state = TS_IDLE;
 428                                 timod_ok(fd, T_BIND_REQ);
 429                                 timod_queue_end(fd, it);
 430                                 SOLD("BIND done");
 431                                 return 0;
 432                         }
 433                 }
 434                 SOLD("some error");
 435                 switch (error) {
 436                         case -EINVAL:
 437                                 terror = TOUTSTATE;
 438                                 error = 0;
 439                                 break;
 440                         case -EACCES:
 441                                 terror = TACCES;
 442                                 error = 0;
 443                                 break;
 444                         case -EADDRNOTAVAIL:
 445                         case -EADDRINUSE:
 446                                 terror = TNOADDR;
 447                                 error = 0;
 448                                 break;
 449                         default:
 450                                 terror = TSYSERR;
 451                                 break;
 452                 }
 453                 timod_error(fd, T_BIND_REQ, terror, -error);
 454                 SOLD("BIND done");
 455                 return 0;
 456         }
 457         case T_CONN_REQ:
 458         {
 459                 struct T_conn_req req;
 460                 unsigned short oldflags;
 461                 struct T_primsg *it;
 462                 SOLD("T_CONN_REQ");
 463                 if (sock->state != TS_UNBND && sock->state != TS_IDLE) {
 464                         timod_error(fd, T_CONN_REQ, TOUTSTATE, 0);
 465                         return 0;
 466                 }
 467                 SOLD("state ok");
 468                 if (copy_from_user(&req, ctl_buf, sizeof(req))) {
 469                         timod_error(fd, T_CONN_REQ, TSYSERR, EFAULT);
 470                         return 0;
 471                 }
 472                 SOLD("got ctl req");
 473                 if (ctl_len > BUF_SIZE) {
 474                         timod_error(fd, T_CONN_REQ, TSYSERR, EFAULT);
 475                         return 0;
 476                 }
 477                 SOLD("req size ok");
 478                 buf = getpage();
 479                 if (copy_from_user(buf, ctl_buf, ctl_len)) {
 480                         timod_error(fd, T_CONN_REQ, TSYSERR, EFAULT);
 481                         putpage(buf);
 482                         return 0;
 483                 }
 484 #ifdef DEBUG_SOLARIS
 485                 {
 486                         char * ptr = buf;
 487                         int len = ctl_len;
 488                         printk("returned data (%d bytes): ",len);
 489                         while( len-- ) {
 490                                 if (!(len & 7))
 491                                         printk(" ");
 492                                 printk("%02x",(unsigned char)*ptr++);
 493                         }
 494                         printk("\n");
 495                 }
 496 #endif
 497                 SOLD("got ctl data");
 498                 args[0] = fd;
 499                 args[1] = (long)buf+req.DEST_offset;
 500                 args[2] = req.DEST_length;
 501                 oldflags = filp->f_flags;
 502                 filp->f_flags &= ~O_NONBLOCK;
 503                 SOLD("calling CONNECT");
 504                 set_fs(KERNEL_DS);
 505                 error = sys_socketcall(SYS_CONNECT, args);
 506                 set_fs(old_fs);
 507                 filp->f_flags = oldflags;
 508                 SOLD("CONNECT done");
 509                 if (!error) {
 510                         struct T_conn_con *con;
 511                         SOLD("no error");
 512                         it = timod_mkctl(ctl_len);
 513                         if (!it) {
 514                                 putpage(buf);
 515                                 return -ENOMEM;
 516                         }
 517                         con = (struct T_conn_con *)&it->type;
 518 #ifdef DEBUG_SOLARIS
 519                         {
 520                                 char * ptr = buf;
 521                                 int len = ctl_len;
 522                                 printk("returned data (%d bytes): ",len);
 523                                 while( len-- ) {
 524                                         if (!(len & 7))
 525                                                 printk(" ");
 526                                         printk("%02x",(unsigned char)*ptr++);
 527                                 }
 528                                 printk("\n");
 529                         }
 530 #endif
 531                         memcpy(con, buf, ctl_len);
 532                         SOLD("copied ctl_buf");
 533                         con->PRIM_type = T_CONN_CON;
 534                         sock->state = TS_DATA_XFER;
 535                 } else {
 536                         struct T_discon_ind *dis;
 537                         SOLD("some error");
 538                         it = timod_mkctl(sizeof(*dis));
 539                         if (!it) {
 540                                 putpage(buf);
 541                                 return -ENOMEM;
 542                         }
 543                         SOLD("got primsg");
 544                         dis = (struct T_discon_ind *)&it->type;
 545                         dis->PRIM_type = T_DISCON_IND;
 546                         dis->DISCON_reason = -error;    /* FIXME: convert this as in iABI_errors() */
 547                         dis->SEQ_number = 0;
 548                 }
 549                 putpage(buf);
 550                 timod_ok(fd, T_CONN_REQ);
 551                 it->pri = 0;
 552                 timod_queue_end(fd, it);
 553                 SOLD("CONNECT done");
 554                 return 0;
 555         }
 556         case T_OPTMGMT_REQ:
 557         {
 558                 struct T_optmgmt_req req;
 559                 SOLD("OPTMGMT_REQ");
 560                 if (copy_from_user(&req, ctl_buf, sizeof(req)))
 561                         return -EFAULT;
 562                 SOLD("got req");
 563                 return timod_optmgmt(fd, req.MGMT_flags,
 564                                 req.OPT_offset > 0 ? ctl_buf + req.OPT_offset : NULL,
 565                                 req.OPT_length, 1);
 566         }
 567         case T_UNITDATA_REQ:
 568         {
 569                 struct T_unitdata_req req;
 570
 571                 int err;
 572                 SOLD("T_UNITDATA_REQ");
 573                 if (sock->state != TS_IDLE && sock->state != TS_DATA_XFER) {
 574                         timod_error(fd, T_CONN_REQ, TOUTSTATE, 0);
 575                         return 0;
 576                 }
 577                 SOLD("state ok");
 578                 if (copy_from_user(&req, ctl_buf, sizeof(req))) {
 579                         timod_error(fd, T_CONN_REQ, TSYSERR, EFAULT);
 580                         return 0;
 581                 }
 582                 SOLD("got ctl req");
 583 #ifdef DEBUG_SOLARIS
 584                 {
 585                         char * ptr = ctl_buf+req.DEST_offset;
 586                         int len = req.DEST_length;
 587                         printk("socket address (%d bytes): ",len);
 588                         while( len-- ) {
 589                                 char c;
 590                                 if (get_user(c,ptr))
 591                                         printk("??");
 592                                 else
 593                                         printk("%02x",(unsigned char)c);
 594                                 ptr++;
 595                         }
 596                         printk("\n");
 597                 }
 598 #endif
 599                 err = sys_sendto(fd, data_buf, data_len, 0, req.DEST_length > 0 ? (struct sockaddr __user *)(ctl_buf+req.DEST_offset) : NULL, req.DEST_length);
 600                 if (err == data_len)
 601                         return 0;
 602                 if(err >= 0) {
 603                         printk("timod: sendto failed to send all the data\n");
 604                         return 0;
 605                 }
 606                 timod_error(fd, T_CONN_REQ, TSYSERR, -err);
 607                 return 0;
 608         }
 609         default:
 610                 printk(KERN_INFO "timod_putmsg: unsupported command %u.\n", ret);
 611                 break;
 612         }
 613         return -EINVAL;
 614 }
 615
 616 int timod_getmsg(unsigned int fd, char __user *ctl_buf, int ctl_maxlen, s32 __user *ctl_len,
 617                         char __user *data_buf, int data_maxlen, s32 __user *data_len, int *flags_p)
 618 {
 619         int error;
 620         int oldflags;
 621         struct file *filp;
 622         struct inode *ino;
 623         struct sol_socket_struct *sock;
 624         struct T_unitdata_ind udi;
 625         mm_segment_t old_fs = get_fs();
 626         long args[6];
 627         char __user *tmpbuf;
 628         int tmplen;
 629         int (*sys_socketcall)(int, unsigned long __user *) =
 630                 (int (*)(int, unsigned long __user *))SYS(socketcall);
 631         int (*sys_recvfrom)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *);
 632
 633         SOLD("entry");
 634         SOLDD(("%u %p %d %p %p %d %p %d\n", fd, ctl_buf, ctl_maxlen, ctl_len, data_buf, data_maxlen, data_len, *flags_p));
 635         filp = current->files->fd[fd];
 636         ino = filp->f_dentry->d_inode;
 637         sock = (struct sol_socket_struct *)filp->private_data;
 638         SOLDD(("%p %p\n", sock->pfirst, sock->pfirst ? sock->pfirst->next : NULL));
 639         if ( ctl_maxlen > 0 && !sock->pfirst && SOCKET_I(ino)->type == SOCK_STREAM
 640                 && sock->state == TS_IDLE) {
 641                 SOLD("calling LISTEN");
 642                 args[0] = fd;
 643                 args[1] = -1;
 644                 set_fs(KERNEL_DS);
 645                 sys_socketcall(SYS_LISTEN, args);
 646                 set_fs(old_fs);
 647                 SOLD("LISTEN done");
 648         }
 649         if (!(filp->f_flags & O_NONBLOCK)) {
 650                 struct poll_wqueues wait_table;
 651                 poll_table *wait;
 652
 653                 poll_initwait(&wait_table);
 654                 wait = &wait_table.pt;
 655                 for(;;) {
 656                         SOLD("loop");
 657                         set_current_state(TASK_INTERRUPTIBLE);
 658                         /* ! ( l<0 || ( l>=0 && ( ! pfirst || (flags == HIPRI && pri != HIPRI) ) ) ) */
 659                         /* ( ! l<0 && ! ( l>=0 && ( ! pfirst || (flags == HIPRI && pri != HIPRI) ) ) ) */
 660                         /* ( l>=0 && ( ! l>=0 || ! ( ! pfirst || (flags == HIPRI && pri != HIPRI) ) ) ) */
 661                         /* ( l>=0 && ( l<0 || ( pfirst && ! (flags == HIPRI && pri != HIPRI) ) ) ) */
 662                         /* ( l>=0 && ( l<0 || ( pfirst && (flags != HIPRI || pri == HIPRI) ) ) ) */
 663                         /* ( l>=0 && ( pfirst && (flags != HIPRI || pri == HIPRI) ) ) */
 664                         if (ctl_maxlen >= 0 && sock->pfirst && (*flags_p != MSG_HIPRI || sock->pfirst->pri == MSG_HIPRI))
 665                                 break;
 666                         SOLD("cond 1 passed");
 667                         if (
 668                         #if 1
 669                                 *flags_p != MSG_HIPRI &&
 670                         #endif
 671                                 ((filp->f_op->poll(filp, wait) & POLLIN) ||
 672                                 (filp->f_op->poll(filp, NULL) & POLLIN) ||
 673                                 signal_pending(current))
 674                         ) {
 675                                 break;
 676                         }
 677                         if( *flags_p == MSG_HIPRI ) {
 678                                 SOLD("avoiding lockup");
 679                                 break ;
 680                         }
 681                         if(wait_table.error) {
 682                                 SOLD("wait-table error");
 683                                 poll_freewait(&wait_table);
 684                                 return wait_table.error;
 685                         }
 686                         SOLD("scheduling");
 687                         schedule();
 688                 }
 689                 SOLD("loop done");
 690                 current->state = TASK_RUNNING;
 691                 poll_freewait(&wait_table);
 692                 if (signal_pending(current)) {
 693                         SOLD("signal pending");
 694                         return -EINTR;
 695                 }
 696         }
 697         if (ctl_maxlen >= 0 && sock->pfirst) {
 698                 struct T_primsg *it = sock->pfirst;
 699                 int l = min_t(int, ctl_maxlen, it->length);
 700                 SCHECK_MAGIC((char*)((u64)(((char *)&it->type)+sock->offset+it->length+7)&~7),MKCTL_MAGIC);
 701                 SOLD("purting ctl data");
 702                 if(copy_to_user(ctl_buf,
 703                         (char*)&it->type + sock->offset, l))
 704                         return -EFAULT;
 705                 SOLD("pur it");
 706                 if(put_user(l, ctl_len))
 707                         return -EFAULT;
 708                 SOLD("set ctl_len");
 709                 *flags_p = it->pri;
 710                 it->length -= l;
 711                 if (it->length) {
 712                         SOLD("more ctl");
 713                         sock->offset += l;
 714                         return MORECTL;
 715                 } else {
 716                         SOLD("removing message");
 717                         sock->pfirst = it->next;
 718                         if (!sock->pfirst)
 719                                 sock->plast = NULL;
 720                         SOLDD(("getmsg kfree %016lx->%016lx\n", it, sock->pfirst));
 721                         mykfree(it);
 722                         sock->offset = 0;
 723                         SOLD("ctl done");
 724                         return 0;
 725                 }
 726         }
 727         *flags_p = 0;
 728         if (ctl_maxlen >= 0) {
 729                 SOLD("ACCEPT perhaps?");
 730                 if (SOCKET_I(ino)->type == SOCK_STREAM && sock->state == TS_IDLE) {
 731                         struct T_conn_ind ind;
 732                         char *buf = getpage();
 733                         int len = BUF_SIZE;
 734
 735                         SOLD("trying ACCEPT");
 736                         if (put_user(ctl_maxlen - sizeof(ind), ctl_len))
 737                                 return -EFAULT;
 738                         args[0] = fd;
 739                         args[1] = (long)buf;
 740                         args[2] = (long)&len;
 741                         oldflags = filp->f_flags;
 742                         filp->f_flags |= O_NONBLOCK;
 743                         SOLD("calling ACCEPT");
 744                         set_fs(KERNEL_DS);
 745                         error = sys_socketcall(SYS_ACCEPT, args);
 746                         set_fs(old_fs);
 747                         filp->f_flags = oldflags;
 748                         if (error < 0) {
 749                                 SOLD("some error");
 750                                 putpage(buf);
 751                                 return error;
 752                         }
 753                         if (error) {
 754                                 SOLD("connect");
 755                                 putpage(buf);
 756                                 if (sizeof(ind) > ctl_maxlen) {
 757                                         SOLD("generating CONN_IND");
 758                                         ind.PRIM_type = T_CONN_IND;
 759                                         ind.SRC_length = len;
 760                                         ind.SRC_offset = sizeof(ind);
 761                                         ind.OPT_length = ind.OPT_offset = 0;
 762                                         ind.SEQ_number = error;
 763                                         if(copy_to_user(ctl_buf, &ind, sizeof(ind))||
 764                                            put_user(sizeof(ind)+ind.SRC_length,ctl_len))
 765                                                 return -EFAULT;
 766                                         SOLD("CONN_IND created");
 767                                 }
 768                                 if (data_maxlen >= 0)
 769                                         put_user(0, data_len);
 770                                 SOLD("CONN_IND done");
 771                                 return 0;
 772                         }
 773                         if (len>ctl_maxlen) {
 774                                 SOLD("data don't fit");
 775                                 putpage(buf);
 776                                 return -EFAULT;         /* XXX - is this ok ? */
 777                         }
 778                         if(copy_to_user(ctl_buf,buf,len) || put_user(len,ctl_len)){
 779                                 SOLD("can't copy data");
 780                                 putpage(buf);
 781                                 return -EFAULT;
 782                         }
 783                         SOLD("ACCEPT done");
 784                         putpage(buf);
 785                 }
 786         }
 787         SOLD("checking data req");
 788         if (data_maxlen <= 0) {
 789                 if (data_maxlen == 0)
 790                         put_user(0, data_len);
 791                 if (ctl_maxlen >= 0)
 792                         put_user(0, ctl_len);
 793                 return -EAGAIN;
 794         }
 795         SOLD("wants data");
 796         if (ctl_maxlen > sizeof(udi) && sock->state == TS_IDLE) {
 797                 SOLD("udi fits");
 798                 tmpbuf = ctl_buf + sizeof(udi);
 799                 tmplen = ctl_maxlen - sizeof(udi);
 800         } else {
 801                 SOLD("udi does not fit");
 802                 tmpbuf = NULL;
 803                 tmplen = 0;
 804         }
 805         if (put_user(tmplen, ctl_len))
 806                 return -EFAULT;
 807         SOLD("set ctl_len");
 808         oldflags = filp->f_flags;
 809         filp->f_flags |= O_NONBLOCK;
 810         SOLD("calling recvfrom");
 811         sys_recvfrom = (int (*)(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *))SYS(recvfrom);
 812         error = sys_recvfrom(fd, data_buf, data_maxlen, 0, (struct sockaddr __user *)tmpbuf, ctl_len);
 813         filp->f_flags = oldflags;
 814         if (error < 0)
 815                 return error;
 816         SOLD("error >= 0" ) ;
 817         if (error && ctl_maxlen > sizeof(udi) && sock->state == TS_IDLE) {
 818                 SOLD("generating udi");
 819                 udi.PRIM_type = T_UNITDATA_IND;
 820                 if (get_user(udi.SRC_length, ctl_len))
 821                         return -EFAULT;
 822                 udi.SRC_offset = sizeof(udi);
 823                 udi.OPT_length = udi.OPT_offset = 0;
 824                 if (copy_to_user(ctl_buf, &udi, sizeof(udi)) ||
 825                     put_user(sizeof(udi)+udi.SRC_length, ctl_len))
 826                         return -EFAULT;
 827                 SOLD("udi done");
 828         } else {
 829                 if (put_user(0, ctl_len))
 830                         return -EFAULT;
 831         }
 832         put_user(error, data_len);
 833         SOLD("done");
 834         return 0;
 835 }
 836
 837 asmlinkage int solaris_getmsg(unsigned int fd, u32 arg1, u32 arg2, u32 arg3)
 838 {
 839         struct file *filp;
 840         struct inode *ino;
 841         struct strbuf __user *ctlptr;
 842         struct strbuf __user *datptr;
 843         struct strbuf ctl, dat;
 844         int __user *flgptr;
 845         int flags;
 846         int error = -EBADF;
 847
 848         SOLD("entry");
 849         lock_kernel();
 850         if(fd >= NR_OPEN) goto out;
 851
 852         filp = current->files->fd[fd];
 853         if(!filp) goto out;
 854
 855         ino = filp->f_dentry->d_inode;
 856         if (!ino || !S_ISSOCK(ino->i_mode))
 857                 goto out;
 858
 859         ctlptr = (struct strbuf __user *)A(arg1);
 860         datptr = (struct strbuf __user *)A(arg2);
 861         flgptr = (int __user *)A(arg3);
 862
 863         error = -EFAULT;
 864
 865         if (ctlptr) {
 866                 if (copy_from_user(&ctl,ctlptr,sizeof(struct strbuf)) ||
 867                     put_user(-1,&ctlptr->len))
 868                         goto out;
 869         } else
 870                 ctl.maxlen = -1;
 871
 872         if (datptr) {
 873                 if (copy_from_user(&dat,datptr,sizeof(struct strbuf)) ||
 874                     put_user(-1,&datptr->len))
 875                         goto out;
 876         } else
 877                 dat.maxlen = -1;
 878
 879         if (get_user(flags,flgptr))
 880                 goto out;
 881
 882         switch (flags) {
 883         case 0:
 884         case MSG_HIPRI:
 885         case MSG_ANY:
 886         case MSG_BAND:
 887                 break;
 888         default:
 889                 error = -EINVAL;
 890                 goto out;
 891         }
 892
 893         error = timod_getmsg(fd,A(ctl.buf),ctl.maxlen,&ctlptr->len,
 894                                 A(dat.buf),dat.maxlen,&datptr->len,&flags);
 895
 896         if (!error && put_user(flags,flgptr))
 897                 error = -EFAULT;
 898 out:
 899         unlock_kernel();
 900         SOLD("done");
 901         return error;
 902 }
 903
 904 asmlinkage int solaris_putmsg(unsigned int fd, u32 arg1, u32 arg2, u32 arg3)
 905 {
 906         struct file *filp;
 907         struct inode *ino;
 908         struct strbuf __user *ctlptr;
 909         struct strbuf __user *datptr;
 910         struct strbuf ctl, dat;
 911         int flags = (int) arg3;
 912         int error = -EBADF;
 913
 914         SOLD("entry");
 915         lock_kernel();
 916         if(fd >= NR_OPEN) goto out;
 917
 918         filp = current->files->fd[fd];
 919         if(!filp) goto out;
 920
 921         ino = filp->f_dentry->d_inode;
 922         if (!ino) goto out;
 923
 924         if (!S_ISSOCK(ino->i_mode) &&
 925                 (imajor(ino) != 30 || iminor(ino) != 1))
 926                 goto out;
 927
 928         ctlptr = A(arg1);
 929         datptr = A(arg2);
 930
 931         error = -EFAULT;
 932
 933         if (ctlptr) {
 934                 if (copy_from_user(&ctl,ctlptr,sizeof(ctl)))
 935                         goto out;
 936                 if (ctl.len < 0 && flags) {
 937                         error = -EINVAL;
 938                         goto out;
 939                 }
 940         } else {
 941                 ctl.len = 0;
 942                 ctl.buf = 0;
 943         }
 944
 945         if (datptr) {
 946                 if (copy_from_user(&dat,datptr,sizeof(dat)))
 947                         goto out;
 948         } else {
 949                 dat.len = 0;
 950                 dat.buf = 0;
 951         }
 952
 953         error = timod_putmsg(fd,A(ctl.buf),ctl.len,
 954                                 A(dat.buf),dat.len,flags);
 955 out:
 956         unlock_kernel();
 957         SOLD("done");
 958         return error;
 959 }