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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" >> 022 020 #include "libc.h" 023 #include "libc.h" 021 024 >> 025 void exit (int status) >> 026 { >> 027 _sos_exit(status); >> 028 } >> 029 022 030 023 void * mmap(void *start, size_t length, int pr !! 031 pid_t fork(void) 024 const char *path, loff_t offset) << 025 { 032 { 026 /* At kernel side, offset is considered posi !! 033 return _sos_fork(); 027 if (offset < 0) !! 034 } 028 return NULL; << 029 035 030 if (0 != _sos_mmap(& start, length, prot, fl << 031 return NULL; << 032 036 033 return start; !! 037 int exec(const char *progname) >> 038 { >> 039 return _sos_exec(progname); >> 040 } >> 041 >> 042 >> 043 int sleep(unsigned int seconds) >> 044 { >> 045 return nanosleep(seconds, 0); >> 046 } >> 047 >> 048 >> 049 int nanosleep(unsigned long int sec, >> 050 unsigned long int nanosec) >> 051 { >> 052 return _sos_nanosleep(sec, nanosec); >> 053 } >> 054 >> 055 >> 056 >> 057 int munmap(void * start, size_t length) >> 058 { >> 059 return _sos_munmap(start, length); 034 } 060 } 035 061 036 062 037 void * mremap(void * old_addr, size_t old_len, 063 void * mremap(void * old_addr, size_t old_len, 038 size_t new_len, 064 size_t new_len, 039 unsigned long flags) 065 unsigned long flags) 040 { 066 { 041 void * new_uaddr = old_addr; 067 void * new_uaddr = old_addr; 042 if (0 != _sos_mresize(old_addr, old_len, & n 068 if (0 != _sos_mresize(old_addr, old_len, & new_uaddr, new_len, flags)) 043 return NULL; 069 return NULL; 044 070 045 return new_uaddr; 071 return new_uaddr; 046 } 072 } 047 073 048 074 >> 075 int mprotect(const void *addr, size_t len, int prot) >> 076 { >> 077 return _sos_mprotect(addr, len, prot); >> 078 } >> 079 >> 080 049 /** 081 /** 050 * The presence of this global variable withou 082 * The presence of this global variable without any protected access 051 * to it explains why the "brk/sbrk" functions 083 * to it explains why the "brk/sbrk" functions below are MT-unsafe ! 052 */ 084 */ 053 static void * kernel_heap_top = NULL; 085 static void * kernel_heap_top = NULL; 054 int brk(void *end_data_seg) 086 int brk(void *end_data_seg) 055 { 087 { 056 if (! end_data_seg) 088 if (! end_data_seg) 057 return -1; 089 return -1; 058 090 059 kernel_heap_top = _sos_brk(end_data_seg); 091 kernel_heap_top = _sos_brk(end_data_seg); 060 return 0; 092 return 0; 061 } 093 } 062 094 063 095 064 void *sbrk(ptrdiff_t increment) 096 void *sbrk(ptrdiff_t increment) 065 { 097 { 066 if (! kernel_heap_top) 098 if (! kernel_heap_top) 067 kernel_heap_top = _sos_brk(0); 099 kernel_heap_top = _sos_brk(0); 068 100 069 kernel_heap_top = _sos_brk(kernel_heap_top + 101 kernel_heap_top = _sos_brk(kernel_heap_top + increment); 070 return kernel_heap_top; 102 return kernel_heap_top; 071 } 103 } 072 104 073 105 074 void * calloc (size_t nmemb, size_t size) 106 void * calloc (size_t nmemb, size_t size) 075 { 107 { 076 return malloc(nmemb * size); 108 return malloc(nmemb * size); 077 } 109 } 078 110 079 111 080 /** 112 /** 081 * The presence of this global variable withou 113 * The presence of this global variable without any protected access 082 * to it explains why the "malloc/calloc" func 114 * to it explains why the "malloc/calloc" functions below are 083 * MT-unsafe ! 115 * MT-unsafe ! 084 */ 116 */ 085 static void * malloc_heap_top = NULL; 117 static void * malloc_heap_top = NULL; 086 void * malloc (size_t size) 118 void * malloc (size_t size) 087 { 119 { 088 void * retval; 120 void * retval; 089 121 090 if (size <= 0) 122 if (size <= 0) 091 return NULL; 123 return NULL; 092 124 093 /* Align on a 4B boundary */ 125 /* Align on a 4B boundary */ 094 size = ((size-1) & ~3) + 4; 126 size = ((size-1) & ~3) + 4; 095 127 096 if (! kernel_heap_top) 128 if (! kernel_heap_top) 097 kernel_heap_top = _sos_brk(0); 129 kernel_heap_top = _sos_brk(0); 098 130 099 if (! malloc_heap_top) 131 if (! malloc_heap_top) 100 malloc_heap_top = kernel_heap_top; 132 malloc_heap_top = kernel_heap_top; 101 133 102 retval = malloc_heap_top; 134 retval = malloc_heap_top; 103 malloc_heap_top += size; 135 malloc_heap_top += size; 104 136 >> 137 _sos_brk(malloc_heap_top); 105 return retval; 138 return retval; 106 } 139 } >> 140 >> 141 >> 142 void free(void *ptr) >> 143 { >> 144 // bochs_printf("Free ignored (not implemented yet)\n"); >> 145 } >> 146 >> 147 >> 148 >> 149 int mount(const char *source, const char *target, >> 150 const char *filesystemtype, unsigned long mountflags, >> 151 const char *data) >> 152 { >> 153 return _sos_mount(source, target, filesystemtype, mountflags, data); >> 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 *buf) >> 170 { >> 171 return _sos_statvfs(path, buf); >> 172 } >> 173 >> 174 >> 175 int open(const char *pathname, int flags, /* mode_t mode */...) >> 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, whence); >> 217 if (retval < 0) >> 218 return retval; >> 219 return result; >> 220 } >> 221 >> 222 >> 223 loff_t lseek64(int fd, loff_t offset, int whence) >> 224 { >> 225 loff_t result = offset; >> 226 int retval = _sos_seek64(fd, & result, whence); >> 227 if (retval < 0) >> 228 return retval; >> 229 return result; >> 230 } >> 231 >> 232 >> 233 void * mmap(void *start, size_t length, int prot , int flags, >> 234 int fd, loff_t offset) >> 235 { >> 236 /* At kernel side, offset is considered positive */ >> 237 if (offset < 0) >> 238 return NULL; >> 239 >> 240 if (0 != _sos_fmmap(& start, length, prot, flags, fd, offset)) >> 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 *newpath) >> 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 *newpath) >> 289 { >> 290 return _sos_rename(oldpath, newpath); >> 291 } >> 292 >> 293 >> 294 int symlink(const char *target, const char *path) >> 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_RDONLY, 0); >> 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->dirent); >> 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 *buf) >> 374 { >> 375 return _sos_stat(file_name, TRUE, buf); >> 376 } >> 377 >> 378 >> 379 int lstat(const char *file_name, struct stat *buf) >> 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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