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001 /* Copyright (C) 2005 David Decotigny 001 /* Copyright (C) 2005 David Decotigny 002 002 003 This program is free software; you can redi 003 This program is free software; you can redistribute it and/or 004 modify it under the terms of the GNU Genera 004 modify it under the terms of the GNU General Public License 005 as published by the Free Software Foundatio 005 as published by the Free Software Foundation; either version 2 006 of the License, or (at your option) any lat 006 of the License, or (at your option) any later version. 007 007 008 This program is distributed in the hope tha 008 This program is distributed in the hope that it will be useful, 009 but WITHOUT ANY WARRANTY; without even the 009 but WITHOUT ANY WARRANTY; without even the implied warranty of 010 MERCHANTABILITY or FITNESS FOR A PARTICULAR 010 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 011 GNU General Public License for more details 011 GNU General Public License for more details. 012 012 013 You should have received a copy of the GNU 013 You should have received a copy of the GNU General Public License 014 along with this program; if not, write to t 014 along with this program; if not, write to the Free Software 015 Foundation, Inc., 59 Temple Place - Suite 3 015 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 016 USA. 016 USA. 017 */ 017 */ 018 018 019 #include "crt.h" 019 #include "crt.h" 020 #include "string.h" << 021 #include "stdarg.h" << 022 << 023 #include "libc.h" 020 #include "libc.h" 024 021 025 void exit (int status) << 026 { << 027 _sos_exit(status); << 028 } << 029 << 030 << 031 pid_t fork(void) << 032 { << 033 return _sos_fork(); << 034 } << 035 << 036 << 037 int exec(const char *progname) << 038 { << 039 return _sos_exec(progname); << 040 } << 041 << 042 022 043 int sleep(unsigned int seconds) !! 023 void * mmap(void *start, size_t length, int prot , int flags, 044 { !! 024 const char *path, loff_t offset) 045 return nanosleep(seconds, 0); << 046 } << 047 << 048 << 049 int nanosleep(unsigned long int sec, << 050 unsigned long int nanosec) << 051 { 025 { 052 return _sos_nanosleep(sec, nanosec); !! 026 /* At kernel side, offset is considered positive */ 053 } !! 027 if (offset < 0) 054 !! 028 return NULL; 055 029 >> 030 if (0 != _sos_mmap(& start, length, prot, flags, path, offset)) >> 031 return NULL; 056 032 057 int munmap(void * start, size_t length) !! 033 return start; 058 { << 059 return _sos_munmap(start, length); << 060 } 034 } 061 035 062 036 063 void * mremap(void * old_addr, size_t old_len, 037 void * mremap(void * old_addr, size_t old_len, 064 size_t new_len, 038 size_t new_len, 065 unsigned long flags) 039 unsigned long flags) 066 { 040 { 067 void * new_uaddr = old_addr; 041 void * new_uaddr = old_addr; 068 if (0 != _sos_mresize(old_addr, old_len, & n 042 if (0 != _sos_mresize(old_addr, old_len, & new_uaddr, new_len, flags)) 069 return NULL; 043 return NULL; 070 044 071 return new_uaddr; 045 return new_uaddr; 072 } 046 } 073 047 074 048 075 int mprotect(const void *addr, size_t len, int << 076 { << 077 return _sos_mprotect(addr, len, prot); << 078 } << 079 << 080 << 081 /** 049 /** 082 * The presence of this global variable withou 050 * The presence of this global variable without any protected access 083 * to it explains why the "brk/sbrk" functions 051 * to it explains why the "brk/sbrk" functions below are MT-unsafe ! 084 */ 052 */ 085 static void * kernel_heap_top = NULL; 053 static void * kernel_heap_top = NULL; 086 int brk(void *end_data_seg) 054 int brk(void *end_data_seg) 087 { 055 { 088 if (! end_data_seg) 056 if (! end_data_seg) 089 return -1; 057 return -1; 090 058 091 kernel_heap_top = _sos_brk(end_data_seg); 059 kernel_heap_top = _sos_brk(end_data_seg); 092 return 0; 060 return 0; 093 } 061 } 094 062 095 063 096 void *sbrk(ptrdiff_t increment) 064 void *sbrk(ptrdiff_t increment) 097 { 065 { 098 if (! kernel_heap_top) 066 if (! kernel_heap_top) 099 kernel_heap_top = _sos_brk(0); 067 kernel_heap_top = _sos_brk(0); 100 068 101 kernel_heap_top = _sos_brk(kernel_heap_top + 069 kernel_heap_top = _sos_brk(kernel_heap_top + increment); 102 return kernel_heap_top; 070 return kernel_heap_top; 103 } 071 } 104 072 105 073 106 void * calloc (size_t nmemb, size_t size) 074 void * calloc (size_t nmemb, size_t size) 107 { 075 { 108 return malloc(nmemb * size); 076 return malloc(nmemb * size); 109 } 077 } 110 078 111 079 112 /** 080 /** 113 * The presence of this global variable withou 081 * The presence of this global variable without any protected access 114 * to it explains why the "malloc/calloc" func 082 * to it explains why the "malloc/calloc" functions below are 115 * MT-unsafe ! 083 * MT-unsafe ! 116 */ 084 */ 117 static void * malloc_heap_top = NULL; 085 static void * malloc_heap_top = NULL; 118 void * malloc (size_t size) 086 void * malloc (size_t size) 119 { 087 { 120 void * retval; 088 void * retval; 121 089 122 if (size <= 0) 090 if (size <= 0) 123 return NULL; 091 return NULL; 124 092 125 /* Align on a 4B boundary */ 093 /* Align on a 4B boundary */ 126 size = ((size-1) & ~3) + 4; 094 size = ((size-1) & ~3) + 4; 127 095 128 if (! kernel_heap_top) 096 if (! kernel_heap_top) 129 kernel_heap_top = _sos_brk(0); 097 kernel_heap_top = _sos_brk(0); 130 098 131 if (! malloc_heap_top) 099 if (! malloc_heap_top) 132 malloc_heap_top = kernel_heap_top; 100 malloc_heap_top = kernel_heap_top; 133 101 134 retval = malloc_heap_top; 102 retval = malloc_heap_top; 135 malloc_heap_top += size; 103 malloc_heap_top += size; 136 104 137 _sos_brk(malloc_heap_top); << 138 return retval; 105 return retval; 139 } 106 } 140 << 141 << 142 void free(void *ptr) << 143 { << 144 // bochs_printf("Free ignored (not implemen << 145 } << 146 << 147 << 148 << 149 int mount(const char *source, const char *targ << 150 const char *filesystemtype, unsigned << 151 const char *data) << 152 { << 153 return _sos_mount(source, target, filesystem << 154 } << 155 << 156 << 157 int umount(const char *target) << 158 { << 159 return _sos_umount(target); << 160 } << 161 << 162 << 163 void sync(void) << 164 { << 165 return _sos_sync(); << 166 } << 167 << 168 << 169 int statvfs(const char *path, struct statvfs * << 170 { << 171 return _sos_statvfs(path, buf); << 172 } << 173 << 174 << 175 int open(const char *pathname, int flags, /* m << 176 { << 177 va_list ap; << 178 unsigned int mode = 0; << 179 << 180 va_start(ap, flags); << 181 if (flags & O_CREAT) << 182 mode = va_arg(ap, unsigned int); << 183 va_end(ap); << 184 << 185 return _sos_open(pathname, flags, mode); << 186 } << 187 << 188 << 189 int close(int fd) << 190 { << 191 return _sos_close(fd); << 192 } << 193 << 194 << 195 int read(int fd, char * buf, size_t len) << 196 { << 197 int retval = _sos_read(fd, buf, & len); << 198 if (retval < 0) << 199 return retval; << 200 return len; << 201 } << 202 << 203 << 204 int write(int fd, const char * buf, size_t len << 205 { << 206 int retval = _sos_write(fd, buf, & len); << 207 if (retval < 0) << 208 return retval; << 209 return len; << 210 } << 211 << 212 << 213 off_t lseek(int fd, off_t offset, int whence) << 214 { << 215 loff_t result = offset; << 216 int retval = _sos_seek64(fd, & result, whenc << 217 if (retval < 0) << 218 return retval; << 219 return result; << 220 } << 221 << 222 << 223 loff_t lseek64(int fd, loff_t offset, int when << 224 { << 225 loff_t result = offset; << 226 int retval = _sos_seek64(fd, & result, whenc << 227 if (retval < 0) << 228 return retval; << 229 return result; << 230 } << 231 << 232 << 233 void * mmap(void *start, size_t length, int pr << 234 int fd, loff_t offset) << 235 { << 236 /* At kernel side, offset is considered posi << 237 if (offset < 0) << 238 return NULL; << 239 << 240 if (0 != _sos_fmmap(& start, length, prot, f << 241 return NULL; << 242 << 243 return start; << 244 } << 245 << 246 << 247 int ftruncate(int fd, off_t length) << 248 { << 249 return _sos_ftruncate64(fd, length); << 250 } << 251 << 252 << 253 int ftruncate64(int fd, loff_t length) << 254 { << 255 return _sos_ftruncate64(fd, length); << 256 } << 257 << 258 << 259 int fcntl(int fd, int cmd, int arg) << 260 { << 261 return _sos_fcntl(fd, cmd, arg); << 262 } << 263 << 264 << 265 int ioctl(int fd, int cmd, int arg) << 266 { << 267 return _sos_ioctl(fd, cmd, arg); << 268 } << 269 << 270 << 271 int creat(const char *pathname, mode_t mode) << 272 { << 273 return _sos_creat(pathname, mode); << 274 } << 275 << 276 int link (const char *oldpath, const char *new << 277 { << 278 return _sos_link(oldpath, newpath); << 279 } << 280 << 281 << 282 int unlink(const char *pathname) << 283 { << 284 return _sos_unlink(pathname); << 285 } << 286 << 287 << 288 int rename(const char *oldpath, const char *ne << 289 { << 290 return _sos_rename(oldpath, newpath); << 291 } << 292 << 293 << 294 int symlink(const char *target, const char *pa << 295 { << 296 return _sos_symlink(target, path); << 297 } << 298 << 299 << 300 int mknod(const char *pathname, mode_t mode, << 301 int type, << 302 unsigned int major, unsigned minor) << 303 { << 304 if (type == S_IFREG) << 305 return creat(pathname, mode); << 306 << 307 return _sos_mknod(pathname, mode, type, << 308 major, minor); << 309 } << 310 << 311 << 312 int mkdir(const char *pathname, mode_t mode) << 313 { << 314 return _sos_mkdir(pathname, mode); << 315 } << 316 << 317 << 318 int rmdir(const char *pathname) << 319 { << 320 return _sos_rmdir(pathname); << 321 } << 322 << 323 << 324 int chmod(const char *path, mode_t mode) << 325 { << 326 return _sos_chmod(path, mode); << 327 } << 328 << 329 << 330 struct sos_DIR_struct << 331 { << 332 int fd; << 333 struct dirent dirent; << 334 }; << 335 << 336 << 337 DIR *opendir(const char *name) << 338 { << 339 DIR * result = malloc(sizeof(DIR)); << 340 if (! result) << 341 return NULL; << 342 << 343 result->fd = _sos_open(name, O_DIRECTORY | O << 344 return result; << 345 } << 346 << 347 << 348 int dirfd(const DIR * dir) << 349 { << 350 if (dir) << 351 return dir->fd; << 352 return -1; << 353 } << 354 << 355 << 356 struct dirent *readdir(DIR *dir) << 357 { << 358 int retval = _sos_readdir(dir->fd, & dir->di << 359 if (retval < 0) << 360 return NULL; << 361 return & dir->dirent; << 362 } << 363 << 364 << 365 int closedir(DIR *dir) << 366 { << 367 close(dir->fd); << 368 free(dir); << 369 return 0; << 370 } << 371 << 372 << 373 int stat(const char *file_name, struct stat *b << 374 { << 375 return _sos_stat(file_name, TRUE, buf); << 376 } << 377 << 378 << 379 int lstat(const char *file_name, struct stat * << 380 { << 381 return _sos_stat(file_name, FALSE, buf); << 382 } << 383 << 384 << 385 int chroot(const char *path) << 386 { << 387 return _sos_chroot(path); << 388 } << 389 << 390 << 391 int chdir(const char *path) << 392 { << 393 return _sos_chdir(path); << 394 } << 395 << 396 int fchdir(int fd) << 397 { << 398 return _sos_fchdir(fd); << 399 } << 400 << 401 << 402 << 403 int printf (const char *format, ...) << 404 { << 405 char buff[4096]; << 406 va_list ap; << 407 << 408 va_start(ap, format); << 409 vsnprintf(buff, sizeof(buff), format, ap); << 410 va_end(ap); << 411 << 412 return write (1, buff, strlen(buff)); << 413 } << 414 << 415 <<
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