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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 "libc.h" !! 020 #include "string.h" 021 #include "stdarg.h" 021 #include "stdarg.h" 022 022 >> 023 #include "libc.h" 023 024 024 void * fakemmap(void *start, size_t length, in !! 025 void exit (int status) 025 const char *path, loff_t offse << 026 { 026 { 027 /* At kernel side, offset is considered posi !! 027 _sos_exit(status); 028 if (offset < 0) !! 028 } 029 return NULL; << 030 029 031 if (0 != _sos_fakemmap(& start, length, prot << 032 return NULL; << 033 030 034 return start; !! 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 >> 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); 035 } 060 } 036 061 037 062 038 void * mremap(void * old_addr, size_t old_len, 063 void * mremap(void * old_addr, size_t old_len, 039 size_t new_len, 064 size_t new_len, 040 unsigned long flags) 065 unsigned long flags) 041 { 066 { 042 void * new_uaddr = old_addr; 067 void * new_uaddr = old_addr; 043 if (0 != _sos_mresize(old_addr, old_len, & n 068 if (0 != _sos_mresize(old_addr, old_len, & new_uaddr, new_len, flags)) 044 return NULL; 069 return NULL; 045 070 046 return new_uaddr; 071 return new_uaddr; 047 } 072 } 048 073 049 074 >> 075 int mprotect(const void *addr, size_t len, int prot) >> 076 { >> 077 return _sos_mprotect(addr, len, prot); >> 078 } >> 079 >> 080 050 /** 081 /** 051 * The presence of this global variable withou 082 * The presence of this global variable without any protected access 052 * to it explains why the "brk/sbrk" functions 083 * to it explains why the "brk/sbrk" functions below are MT-unsafe ! 053 */ 084 */ 054 static void * kernel_heap_top = NULL; 085 static void * kernel_heap_top = NULL; 055 int brk(void *end_data_seg) 086 int brk(void *end_data_seg) 056 { 087 { 057 if (! end_data_seg) 088 if (! end_data_seg) 058 return -1; 089 return -1; 059 090 060 kernel_heap_top = _sos_brk(end_data_seg); 091 kernel_heap_top = _sos_brk(end_data_seg); 061 return 0; 092 return 0; 062 } 093 } 063 094 064 095 065 void *sbrk(ptrdiff_t increment) 096 void *sbrk(ptrdiff_t increment) 066 { 097 { 067 if (! kernel_heap_top) 098 if (! kernel_heap_top) 068 kernel_heap_top = _sos_brk(0); 099 kernel_heap_top = _sos_brk(0); 069 100 070 kernel_heap_top = _sos_brk(kernel_heap_top + 101 kernel_heap_top = _sos_brk(kernel_heap_top + increment); 071 return kernel_heap_top; 102 return kernel_heap_top; 072 } 103 } 073 104 074 105 075 void * calloc (size_t nmemb, size_t size) 106 void * calloc (size_t nmemb, size_t size) 076 { 107 { 077 return malloc(nmemb * size); 108 return malloc(nmemb * size); 078 } 109 } 079 110 080 111 081 /** 112 /** 082 * The presence of this global variable withou 113 * The presence of this global variable without any protected access 083 * to it explains why the "malloc/calloc" func 114 * to it explains why the "malloc/calloc" functions below are 084 * MT-unsafe ! 115 * MT-unsafe ! 085 */ 116 */ 086 static void * malloc_heap_top = NULL; 117 static void * malloc_heap_top = NULL; 087 void * malloc (size_t size) 118 void * malloc (size_t size) 088 { 119 { 089 void * retval; 120 void * retval; 090 121 091 if (size <= 0) 122 if (size <= 0) 092 return NULL; 123 return NULL; 093 124 094 /* Align on a 4B boundary */ 125 /* Align on a 4B boundary */ 095 size = ((size-1) & ~3) + 4; 126 size = ((size-1) & ~3) + 4; 096 127 097 if (! kernel_heap_top) 128 if (! kernel_heap_top) 098 kernel_heap_top = _sos_brk(0); 129 kernel_heap_top = _sos_brk(0); 099 130 100 if (! malloc_heap_top) 131 if (! malloc_heap_top) 101 malloc_heap_top = kernel_heap_top; 132 malloc_heap_top = kernel_heap_top; 102 133 103 retval = malloc_heap_top; 134 retval = malloc_heap_top; 104 malloc_heap_top += size; 135 malloc_heap_top += size; 105 136 106 _sos_brk(malloc_heap_top); 137 _sos_brk(malloc_heap_top); 107 return retval; 138 return retval; 108 } 139 } 109 140 110 141 111 void free(void *ptr) 142 void free(void *ptr) 112 { 143 { 113 // bochs_printf("Free ignored (not implemen 144 // bochs_printf("Free ignored (not implemented yet)\n"); 114 } 145 } 115 146 116 147 >> 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 >> 174 117 int open(const char *pathname, int flags, /* m 175 int open(const char *pathname, int flags, /* mode_t mode */...) 118 { 176 { 119 va_list ap; 177 va_list ap; 120 unsigned int mode = 0; 178 unsigned int mode = 0; 121 179 122 va_start(ap, flags); 180 va_start(ap, flags); 123 if (flags & O_CREAT) 181 if (flags & O_CREAT) 124 mode = va_arg(ap, unsigned int); 182 mode = va_arg(ap, unsigned int); 125 va_end(ap); 183 va_end(ap); 126 184 127 return _sos_open(pathname, flags, mode); 185 return _sos_open(pathname, flags, mode); 128 } 186 } 129 187 130 188 >> 189 int close(int fd) >> 190 { >> 191 return _sos_close(fd); >> 192 } >> 193 >> 194 131 int read(int fd, char * buf, size_t len) 195 int read(int fd, char * buf, size_t len) 132 { 196 { 133 int retval = _sos_read(fd, buf, & len); 197 int retval = _sos_read(fd, buf, & len); 134 if (retval < 0) 198 if (retval < 0) 135 return retval; 199 return retval; 136 return len; 200 return len; 137 } 201 } 138 202 139 203 140 int write(int fd, const char * buf, size_t len 204 int write(int fd, const char * buf, size_t len) 141 { 205 { 142 int retval = _sos_write(fd, buf, & len); 206 int retval = _sos_write(fd, buf, & len); 143 if (retval < 0) 207 if (retval < 0) 144 return retval; 208 return retval; 145 return len; 209 return len; 146 } 210 } 147 211 148 212 149 off_t lseek(int fd, off_t offset, int whence) 213 off_t lseek(int fd, off_t offset, int whence) 150 { 214 { 151 loff_t result = offset; 215 loff_t result = offset; 152 int retval = _sos_seek64(fd, & result, whenc 216 int retval = _sos_seek64(fd, & result, whence); 153 if (retval < 0) 217 if (retval < 0) 154 return retval; 218 return retval; 155 return result; 219 return result; 156 } 220 } 157 221 158 222 159 loff_t lseek64(int fd, loff_t offset, int when 223 loff_t lseek64(int fd, loff_t offset, int whence) 160 { 224 { 161 loff_t result = offset; 225 loff_t result = offset; 162 int retval = _sos_seek64(fd, & result, whenc 226 int retval = _sos_seek64(fd, & result, whence); 163 if (retval < 0) 227 if (retval < 0) 164 return retval; 228 return retval; 165 return result; 229 return result; 166 } 230 } 167 231 168 232 169 void * mmap(void *start, size_t length, int pr 233 void * mmap(void *start, size_t length, int prot , int flags, 170 int fd, loff_t offset) 234 int fd, loff_t offset) 171 { 235 { 172 /* At kernel side, offset is considered posi 236 /* At kernel side, offset is considered positive */ 173 if (offset < 0) 237 if (offset < 0) 174 return NULL; 238 return NULL; 175 239 176 if (0 != _sos_fmmap(& start, length, prot, f 240 if (0 != _sos_fmmap(& start, length, prot, flags, fd, offset)) 177 return NULL; 241 return NULL; 178 242 179 return start; 243 return start; 180 } 244 } 181 245 182 246 183 int ftruncate(int fd, off_t length) 247 int ftruncate(int fd, off_t length) 184 { 248 { 185 return _sos_ftruncate64(fd, length); 249 return _sos_ftruncate64(fd, length); 186 } 250 } 187 251 188 252 >> 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 >> 329 189 struct sos_DIR_struct 330 struct sos_DIR_struct 190 { 331 { 191 int fd; 332 int fd; 192 struct dirent dirent; 333 struct dirent dirent; 193 }; 334 }; 194 335 195 336 196 DIR *opendir(const char *name) 337 DIR *opendir(const char *name) 197 { 338 { 198 DIR * result = malloc(sizeof(DIR)); 339 DIR * result = malloc(sizeof(DIR)); 199 if (! result) 340 if (! result) 200 return NULL; 341 return NULL; 201 342 202 result->fd = _sos_open(name, O_DIRECTORY | O 343 result->fd = _sos_open(name, O_DIRECTORY | O_RDONLY, 0); 203 return result; 344 return result; 204 } 345 } 205 346 206 347 207 int dirfd(const DIR * dir) 348 int dirfd(const DIR * dir) 208 { 349 { 209 if (dir) 350 if (dir) 210 return dir->fd; 351 return dir->fd; 211 return -1; 352 return -1; 212 } 353 } 213 354 214 355 215 struct dirent *readdir(DIR *dir) 356 struct dirent *readdir(DIR *dir) 216 { 357 { 217 int retval = _sos_readdir(dir->fd, & dir->di 358 int retval = _sos_readdir(dir->fd, & dir->dirent); 218 if (retval < 0) 359 if (retval < 0) 219 return NULL; 360 return NULL; 220 return & dir->dirent; 361 return & dir->dirent; 221 } 362 } 222 363 223 364 224 int closedir(DIR *dir) 365 int closedir(DIR *dir) 225 { 366 { 226 close(dir->fd); 367 close(dir->fd); 227 free(dir); 368 free(dir); 228 return 0; 369 return 0; 229 } 370 } 230 371 231 372 232 int stat(const char *file_name, struct stat *b 373 int stat(const char *file_name, struct stat *buf) 233 { 374 { 234 return _sos_stat(file_name, TRUE, buf); 375 return _sos_stat(file_name, TRUE, buf); 235 } 376 } 236 377 237 378 238 int lstat(const char *file_name, struct stat * 379 int lstat(const char *file_name, struct stat *buf) 239 { 380 { 240 return _sos_stat(file_name, FALSE, buf); 381 return _sos_stat(file_name, FALSE, buf); 241 } 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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