Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | } |