| 1 | /*
|
|---|
| 2 | * sys_socket.c - implement the various socket related system calls
|
|---|
| 3 | *
|
|---|
| 4 | * Author Alain Greiner (2016,2017,2018,2019,2020)
|
|---|
| 5 | *
|
|---|
| 6 | * Copyright (c) UPMC Sorbonne Universites
|
|---|
| 7 | *
|
|---|
| 8 | * This file is part of ALMOS-MKH.
|
|---|
| 9 | *
|
|---|
| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it
|
|---|
| 11 | * under the terms of the GNU General Public License as published by
|
|---|
| 12 | * the Free Software Foundation; version 2.0 of the License.
|
|---|
| 13 | *
|
|---|
| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but
|
|---|
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|---|
| 17 | * General Public License for more details.
|
|---|
| 18 | *
|
|---|
| 19 | * You should have received a copy of the GNU General Public License
|
|---|
| 20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation,
|
|---|
| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|---|
| 22 | */
|
|---|
| 23 |
|
|---|
| 24 | #include <hal_kernel_types.h>
|
|---|
| 25 | #include <hal_uspace.h>
|
|---|
| 26 | #include <hal_vmm.h>
|
|---|
| 27 | #include <errno.h>
|
|---|
| 28 | #include <vmm.h>
|
|---|
| 29 | #include <cluster.h>
|
|---|
| 30 | #include <thread.h>
|
|---|
| 31 | #include <process.h>
|
|---|
| 32 | #include <ksocket.h>
|
|---|
| 33 | #include <string.h>
|
|---|
| 34 | #include <shared_syscalls.h>
|
|---|
| 35 | #include <shared_socket.h>
|
|---|
| 36 | #include <remote_barrier.h>
|
|---|
| 37 | #include <vfs.h>
|
|---|
| 38 | #include <mapper.h>
|
|---|
| 39 |
|
|---|
| 40 | #include <syscalls.h>
|
|---|
| 41 |
|
|---|
| 42 | /////////////////////////////////////////////////////////////////////////////////
|
|---|
| 43 | // This function returns a printable string for the socket related command type.
|
|---|
| 44 | /////////////////////////////////////////////////////////////////////////////////
|
|---|
| 45 |
|
|---|
| 46 | #if DEBUG_SYS_SOCKET
|
|---|
| 47 | static char* socket_cmd_type_str( uint32_t type )
|
|---|
| 48 | {
|
|---|
| 49 | if ( type == SOCK_CREATE ) return "CREATE";
|
|---|
| 50 | else if( type == SOCK_BIND ) return "BIND";
|
|---|
| 51 | else if( type == SOCK_LISTEN ) return "LISTEN";
|
|---|
| 52 | else if( type == SOCK_CONNECT ) return "CONNECT";
|
|---|
| 53 | else if( type == SOCK_ACCEPT ) return "ACCEPT";
|
|---|
| 54 | else if( type == SOCK_SEND ) return "SEND";
|
|---|
| 55 | else if( type == SOCK_SENDTO ) return "SENDTO";
|
|---|
| 56 | else if( type == SOCK_RECV ) return "RECV";
|
|---|
| 57 | else if( type == SOCK_RECVFROM ) return "RECVFROM";
|
|---|
| 58 | else return "undefined";
|
|---|
| 59 | }
|
|---|
| 60 | #endif
|
|---|
| 61 |
|
|---|
| 62 | /////////////////////////////
|
|---|
| 63 | int sys_socket( reg_t arg0,
|
|---|
| 64 | reg_t arg1,
|
|---|
| 65 | reg_t arg2,
|
|---|
| 66 | reg_t arg3 )
|
|---|
| 67 | {
|
|---|
| 68 |
|
|---|
| 69 | int32_t ret;
|
|---|
| 70 | vseg_t * vseg;
|
|---|
| 71 |
|
|---|
| 72 | sockaddr_in_t k_sockaddr; // kernel buffer for one socket address
|
|---|
| 73 |
|
|---|
| 74 | thread_t * this = CURRENT_THREAD;
|
|---|
| 75 | process_t * process = this->process;
|
|---|
| 76 |
|
|---|
| 77 | uint32_t cmd = arg0;
|
|---|
| 78 |
|
|---|
| 79 | #if (DEBUG_SYS_SOCKET || CONFIG_INSTRUMENTATION_SYSCALLS)
|
|---|
| 80 | uint64_t tm_start = hal_get_cycles();
|
|---|
| 81 | #endif
|
|---|
| 82 |
|
|---|
| 83 | #if DEBUG_SYS_SOCKET
|
|---|
| 84 | tm_start = hal_get_cycles();
|
|---|
| 85 | if( DEBUG_SYS_SOCKET < tm_start )
|
|---|
| 86 | printk("\n[%s] thread[%x,%x] enter / %s / a1 %x / a2 %x / a3 %x / cycle %d\n",
|
|---|
| 87 | __FUNCTION__, process->pid, this->trdid, socket_cmd_type_str(cmd),
|
|---|
| 88 | arg1, arg2, arg3, (uint32_t)tm_start );
|
|---|
| 89 | #endif
|
|---|
| 90 |
|
|---|
| 91 | switch( cmd )
|
|---|
| 92 | {
|
|---|
| 93 | /////////////////
|
|---|
| 94 | case SOCK_CREATE:
|
|---|
| 95 | {
|
|---|
| 96 | uint32_t domain = arg1;
|
|---|
| 97 | uint32_t type = arg2;
|
|---|
| 98 |
|
|---|
| 99 | if( domain != AF_INET )
|
|---|
| 100 | {
|
|---|
| 101 |
|
|---|
| 102 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 103 | printk("\n[ERROR] in %s for CREATE domain %d =! AF_INET\n",
|
|---|
| 104 | __FUNCTION__ , domain );
|
|---|
| 105 | #endif
|
|---|
| 106 | this->errno = EINVAL;
|
|---|
| 107 | ret = -1;
|
|---|
| 108 | break;
|
|---|
| 109 | }
|
|---|
| 110 |
|
|---|
| 111 | if( (type != SOCK_DGRAM) && (type != SOCK_STREAM) )
|
|---|
| 112 | {
|
|---|
| 113 |
|
|---|
| 114 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 115 | printk("\n[ERROR] in %s for CREATE : socket must be SOCK_STREAM(TCP) or SOCK_DGRAM(UDP)\n",
|
|---|
| 116 | __FUNCTION__ );
|
|---|
| 117 | #endif
|
|---|
| 118 | this->errno = EINVAL;
|
|---|
| 119 | ret = -1;
|
|---|
| 120 | break;
|
|---|
| 121 | }
|
|---|
| 122 |
|
|---|
| 123 | // call relevant kernel socket function
|
|---|
| 124 | ret = socket_build( domain , type );
|
|---|
| 125 |
|
|---|
| 126 | if( ret == -1 )
|
|---|
| 127 | {
|
|---|
| 128 |
|
|---|
| 129 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 130 | printk("\n[ERROR] in %s for CREATE : cannot create socket\n",
|
|---|
| 131 | __FUNCTION__ );
|
|---|
| 132 | #endif
|
|---|
| 133 | this->errno = EINVAL;
|
|---|
| 134 | }
|
|---|
| 135 | break;
|
|---|
| 136 | }
|
|---|
| 137 | ///////////////
|
|---|
| 138 | case SOCK_BIND:
|
|---|
| 139 | {
|
|---|
| 140 | uint32_t fdid = arg1;
|
|---|
| 141 | sockaddr_in_t * u_sockaddr = (sockaddr_in_t *)(intptr_t)arg2;
|
|---|
| 142 |
|
|---|
| 143 | // check addr pointer in user space
|
|---|
| 144 | if( vmm_get_vseg( process , (intptr_t)arg2 , &vseg ) )
|
|---|
| 145 | {
|
|---|
| 146 |
|
|---|
| 147 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 148 | printk("\n[ERROR] in %s for BIND : address %x unmapped\n",
|
|---|
| 149 | __FUNCTION__ , (intptr_t)arg2 );
|
|---|
| 150 | #endif
|
|---|
| 151 | this->errno = EINVAL;
|
|---|
| 152 | ret = -1;
|
|---|
| 153 | break;
|
|---|
| 154 | }
|
|---|
| 155 |
|
|---|
| 156 | // copy sockaddr structure from uspace to kernel space
|
|---|
| 157 | hal_copy_from_uspace( XPTR( local_cxy , &k_sockaddr ),
|
|---|
| 158 | u_sockaddr,
|
|---|
| 159 | sizeof(sockaddr_in_t) );
|
|---|
| 160 |
|
|---|
| 161 | // call relevant kernel socket function
|
|---|
| 162 | ret = socket_bind( fdid,
|
|---|
| 163 | k_sockaddr.sin_addr,
|
|---|
| 164 | k_sockaddr.sin_port );
|
|---|
| 165 |
|
|---|
| 166 | if( ret )
|
|---|
| 167 | {
|
|---|
| 168 |
|
|---|
| 169 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 170 | printk("\n[ERROR] in %s for BIND : cannot access socket[%x,%d]\n",
|
|---|
| 171 | __FUNCTION__ , process->pid, fdid );
|
|---|
| 172 | #endif
|
|---|
| 173 | this->errno = EINVAL;
|
|---|
| 174 | }
|
|---|
| 175 | break;
|
|---|
| 176 | }
|
|---|
| 177 | /////////////////
|
|---|
| 178 | case SOCK_LISTEN:
|
|---|
| 179 | {
|
|---|
| 180 | uint32_t fdid = (uint32_t)arg1;
|
|---|
| 181 | uint32_t max_pending = (uint32_t)arg2;
|
|---|
| 182 |
|
|---|
| 183 | // call relevant kernel socket function
|
|---|
| 184 | ret = socket_listen( fdid , max_pending );
|
|---|
| 185 |
|
|---|
| 186 | if( ret )
|
|---|
| 187 | {
|
|---|
| 188 |
|
|---|
| 189 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 190 | printk("\n[ERROR] in %s for LISTEN : cannot access socket[%x,%d]\n",
|
|---|
| 191 | __FUNCTION__ , process->pid, fdid );
|
|---|
| 192 | #endif
|
|---|
| 193 | this->errno = EINVAL;
|
|---|
| 194 | }
|
|---|
| 195 | break;
|
|---|
| 196 | }
|
|---|
| 197 | //////////////////
|
|---|
| 198 | case SOCK_CONNECT:
|
|---|
| 199 | {
|
|---|
| 200 | uint32_t fdid = (uint32_t)arg1;
|
|---|
| 201 | sockaddr_in_t * u_sockaddr = (sockaddr_in_t *)(intptr_t)arg2;
|
|---|
| 202 |
|
|---|
| 203 | // check addr pointer in user space
|
|---|
| 204 | if( vmm_get_vseg( process , (intptr_t)arg2 , &vseg ) )
|
|---|
| 205 | {
|
|---|
| 206 |
|
|---|
| 207 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 208 | printk("\n[ERROR] in %s for CONNECT : server address %x unmapped\n",
|
|---|
| 209 | __FUNCTION__ , (intptr_t)arg2 );
|
|---|
| 210 | #endif
|
|---|
| 211 | this->errno = EINVAL;
|
|---|
| 212 | ret = -1;
|
|---|
| 213 | break;
|
|---|
| 214 | }
|
|---|
| 215 |
|
|---|
| 216 | // copy sockaddr structure from uspace to kernel space
|
|---|
| 217 | hal_copy_from_uspace( XPTR( local_cxy , &k_sockaddr ),
|
|---|
| 218 | u_sockaddr ,
|
|---|
| 219 | sizeof(sockaddr_in_t) );
|
|---|
| 220 |
|
|---|
| 221 | // call relevant kernel function
|
|---|
| 222 | ret = socket_connect( fdid,
|
|---|
| 223 | k_sockaddr.sin_addr,
|
|---|
| 224 | k_sockaddr.sin_port );
|
|---|
| 225 |
|
|---|
| 226 | if( ret )
|
|---|
| 227 | {
|
|---|
| 228 |
|
|---|
| 229 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 230 | printk("\n[ERROR] in %s for CONNECT : cannot access socket[%x,%d]\n",
|
|---|
| 231 | __FUNCTION__ , process->pid, fdid );
|
|---|
| 232 | #endif
|
|---|
| 233 | this->errno = EINVAL;
|
|---|
| 234 | }
|
|---|
| 235 | break;
|
|---|
| 236 | }
|
|---|
| 237 | /////////////////
|
|---|
| 238 | case SOCK_ACCEPT:
|
|---|
| 239 | {
|
|---|
| 240 | uint32_t fdid = (uint32_t)arg1;
|
|---|
| 241 | sockaddr_in_t * u_sockaddr = (sockaddr_in_t *)(intptr_t)arg2;
|
|---|
| 242 |
|
|---|
| 243 | // check addr pointer in user space
|
|---|
| 244 | if( vmm_get_vseg( process , (intptr_t)arg2 , &vseg ) )
|
|---|
| 245 | {
|
|---|
| 246 |
|
|---|
| 247 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 248 | printk("\n[ERROR] in %s for CONNECT : server address %x unmapped\n",
|
|---|
| 249 | __FUNCTION__ , (intptr_t)arg2 );
|
|---|
| 250 | #endif
|
|---|
| 251 | this->errno = EINVAL;
|
|---|
| 252 | ret = -1;
|
|---|
| 253 | break;
|
|---|
| 254 | }
|
|---|
| 255 |
|
|---|
| 256 | // call relevant kernel function
|
|---|
| 257 | ret = socket_accept( fdid,
|
|---|
| 258 | &k_sockaddr.sin_addr,
|
|---|
| 259 | &k_sockaddr.sin_port );
|
|---|
| 260 |
|
|---|
| 261 | if( ret < 0 )
|
|---|
| 262 | {
|
|---|
| 263 |
|
|---|
| 264 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 265 | printk("\n[ERROR] in %s for ACCEPT : cannot access socket[%x,%d]\n",
|
|---|
| 266 | __FUNCTION__ , process->pid, fdid );
|
|---|
| 267 | #endif
|
|---|
| 268 | this->errno = EINVAL;
|
|---|
| 269 | }
|
|---|
| 270 |
|
|---|
| 271 | // copy sockaddr structure from kernel space to uspace
|
|---|
| 272 | hal_copy_to_uspace( u_sockaddr,
|
|---|
| 273 | XPTR( local_cxy , &k_sockaddr ),
|
|---|
| 274 | sizeof(sockaddr_in_t) );
|
|---|
| 275 |
|
|---|
| 276 | break;
|
|---|
| 277 | }
|
|---|
| 278 | ///////////////
|
|---|
| 279 | case SOCK_SEND:
|
|---|
| 280 | {
|
|---|
| 281 | uint32_t fdid = (uint32_t)arg1;
|
|---|
| 282 | uint8_t * u_buf = (uint8_t *)(intptr_t)arg2;
|
|---|
| 283 | uint32_t length = (uint32_t)arg3;
|
|---|
| 284 |
|
|---|
| 285 | // check buffer is mapped in user space
|
|---|
| 286 | if( vmm_get_vseg( process , (intptr_t)arg2 , &vseg ) )
|
|---|
| 287 | {
|
|---|
| 288 |
|
|---|
| 289 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 290 | printk("\n[ERROR] in %s for SEND : buffer %x unmapped\n",
|
|---|
| 291 | __FUNCTION__ , (intptr_t)arg2 );
|
|---|
| 292 | #endif
|
|---|
| 293 | this->errno = EINVAL;
|
|---|
| 294 | ret = -1;
|
|---|
| 295 | break;
|
|---|
| 296 | }
|
|---|
| 297 |
|
|---|
| 298 | // check length
|
|---|
| 299 | if( length == 0 )
|
|---|
| 300 | {
|
|---|
| 301 |
|
|---|
| 302 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 303 | printk("\n[ERROR] in %s for SEND : buffer length is 0\n",
|
|---|
| 304 | __FUNCTION__ , (intptr_t)arg2 );
|
|---|
| 305 | #endif
|
|---|
| 306 | this->errno = EINVAL;
|
|---|
| 307 | ret = -1;
|
|---|
| 308 | break;
|
|---|
| 309 | }
|
|---|
| 310 |
|
|---|
| 311 | // cal relevant relevant socket function
|
|---|
| 312 | ret = socket_send( fdid , u_buf , length );
|
|---|
| 313 |
|
|---|
| 314 | if( ret < 0 )
|
|---|
| 315 | {
|
|---|
| 316 |
|
|---|
| 317 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 318 | printk("\n[ERROR] in %s for SEND : cannot access socket[%x,%d] \n",
|
|---|
| 319 | __FUNCTION__ , process->pid, fdid );
|
|---|
| 320 | #endif
|
|---|
| 321 | this->errno = EINVAL;
|
|---|
| 322 | }
|
|---|
| 323 | break;
|
|---|
| 324 | }
|
|---|
| 325 | ///////////////
|
|---|
| 326 | case SOCK_RECV:
|
|---|
| 327 | {
|
|---|
| 328 | uint32_t fdid = (uint32_t)arg1;
|
|---|
| 329 | uint8_t * u_buf = (uint8_t *)(intptr_t)arg2;
|
|---|
| 330 | uint32_t length = (uint32_t)arg3;
|
|---|
| 331 |
|
|---|
| 332 | // check buffer is mapped in user space
|
|---|
| 333 | if( vmm_get_vseg( process , (intptr_t)arg2 , &vseg ) )
|
|---|
| 334 | {
|
|---|
| 335 |
|
|---|
| 336 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 337 | printk("\n[ERROR] in %s for SEND : buffer %x unmapped\n",
|
|---|
| 338 | __FUNCTION__ , (intptr_t)arg2 );
|
|---|
| 339 | #endif
|
|---|
| 340 | this->errno = EINVAL;
|
|---|
| 341 | ret = -1;
|
|---|
| 342 | break;
|
|---|
| 343 | }
|
|---|
| 344 |
|
|---|
| 345 | // check length
|
|---|
| 346 | if( length == 0 )
|
|---|
| 347 | {
|
|---|
| 348 |
|
|---|
| 349 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 350 | printk("\n[ERROR] in %s for SEND : buffer length is 0\n",
|
|---|
| 351 | __FUNCTION__ , (intptr_t)arg2 );
|
|---|
| 352 | #endif
|
|---|
| 353 | this->errno = EINVAL;
|
|---|
| 354 | ret = -1;
|
|---|
| 355 | break;
|
|---|
| 356 | }
|
|---|
| 357 |
|
|---|
| 358 | // cal relevant kernel socket function
|
|---|
| 359 | ret = socket_recv( fdid , u_buf , length );
|
|---|
| 360 |
|
|---|
| 361 | if( ret < 0 )
|
|---|
| 362 | {
|
|---|
| 363 |
|
|---|
| 364 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 365 | printk("\n[ERROR] in %s for RECV : cannot access socket[%x,%d] \n",
|
|---|
| 366 | __FUNCTION__ , process->pid, fdid );
|
|---|
| 367 | #endif
|
|---|
| 368 | this->errno = EINVAL;
|
|---|
| 369 | }
|
|---|
| 370 | break;
|
|---|
| 371 | }
|
|---|
| 372 | ////////
|
|---|
| 373 | default:
|
|---|
| 374 | {
|
|---|
| 375 |
|
|---|
| 376 | #if DEBUG_SYSCALLS_ERROR
|
|---|
| 377 | printk("\n[ERROR] in %s : undefined socket operation %d\n",
|
|---|
| 378 | __FUNCTION__ , cmd );
|
|---|
| 379 | #endif
|
|---|
| 380 | this->errno = EINVAL;
|
|---|
| 381 | ret = -1;
|
|---|
| 382 | break;
|
|---|
| 383 | }
|
|---|
| 384 | } // end switch on cmd
|
|---|
| 385 |
|
|---|
| 386 | #if (DEBUG_SYS_SOCKET || CONFIG_INSTRUMENTATION_SYSCALLS)
|
|---|
| 387 | uint64_t tm_end = hal_get_cycles();
|
|---|
| 388 | #endif
|
|---|
| 389 |
|
|---|
| 390 | #if DEBUG_SYS_SOCKET
|
|---|
| 391 | if( DEBUG_SYS_SOCKET < tm_end )
|
|---|
| 392 | printk("\n[%s] thread[%x,%x] exit / cycle %d\n",
|
|---|
| 393 | __FUNCTION__, process->pid, this->trdid, (uint32_t)tm_end );
|
|---|
| 394 | #endif
|
|---|
| 395 |
|
|---|
| 396 | #if CONFIG_INSTRUMENTATION_SYSCALLS
|
|---|
| 397 | hal_atomic_add( &syscalls_cumul_cost[SYS_SOCKET] , tm_end - tm_start );
|
|---|
| 398 | hal_atomic_add( &syscalls_occurences[SYS_SOCKET] , 1 );
|
|---|
| 399 | #endif
|
|---|
| 400 |
|
|---|
| 401 | return ret;
|
|---|
| 402 |
|
|---|
| 403 | } // end sys_socket()
|
|---|