| 1 | #include <u.h> |
| 2 | #include <libc.h> |
| 3 | #include <ureg.h> |
| 4 | #include "dat.h" |
| 5 | #include "fns.h" |
| 6 | #include "linux.h" |
| 7 | |
| 8 | int |
| 9 | ufstat(int fd, Ustat *ps) |
| 10 | { |
| 11 | Ufile *f; |
| 12 | int err; |
| 13 | |
| 14 | err = -EBADF; |
| 15 | if((f = fdgetfile(fd)) == nil) |
| 16 | goto out; |
| 17 | err = -EPERM; |
| 18 | if(devtab[f->dev]->fstat == nil) |
| 19 | goto out; |
| 20 | memset(ps, 0, sizeof(Ustat)); |
| 21 | err = devtab[f->dev]->fstat(f, ps); |
| 22 | out: |
| 23 | putfile(f); |
| 24 | return err; |
| 25 | } |
| 26 | |
| 27 | struct linux_stat { |
| 28 | ushort st_dev; |
| 29 | ushort __pad1; |
| 30 | ulong st_ino; |
| 31 | ushort st_mode; |
| 32 | ushort st_nlink; |
| 33 | ushort st_uid; |
| 34 | ushort st_gid; |
| 35 | ushort st_rdev; |
| 36 | ushort __pad2; |
| 37 | ulong st_size; |
| 38 | ulong st_blksize; |
| 39 | ulong st_blocks; |
| 40 | ulong st_atime; |
| 41 | ulong __unused1; |
| 42 | ulong st_mtime; |
| 43 | ulong __unused2; |
| 44 | ulong st_ctime; |
| 45 | ulong __unused3; |
| 46 | ulong __unused4; |
| 47 | ulong __unused5; |
| 48 | }; |
| 49 | |
| 50 | static void |
| 51 | ustat2linuxstat(Ustat *x, struct linux_stat *s) |
| 52 | { |
| 53 | memset(s, 0, sizeof(*s)); |
| 54 | s->st_dev = x->dev; |
| 55 | s->st_ino = x->ino; |
| 56 | s->st_mode = x->mode; |
| 57 | s->st_nlink = 1; |
| 58 | s->st_uid = x->uid; |
| 59 | s->st_gid = x->gid; |
| 60 | s->st_size = x->size; |
| 61 | s->st_rdev = x->rdev; |
| 62 | s->st_blksize = 4096; |
| 63 | s->st_blocks = (x->size+s->st_blksize-1) / s->st_blksize; |
| 64 | s->st_atime = x->atime; |
| 65 | s->st_mtime = x->mtime; |
| 66 | s->st_ctime = x->ctime; |
| 67 | } |
| 68 | |
| 69 | |
| 70 | struct linux_stat64 { |
| 71 | uvlong lst_dev; |
| 72 | uint __pad1; |
| 73 | uint __lst_ino; |
| 74 | uint lst_mode; |
| 75 | uint lst_nlink; |
| 76 | uint lst_uid; |
| 77 | uint lst_gid; |
| 78 | uvlong lst_rdev; |
| 79 | uint __pad2; |
| 80 | vlong lst_size; |
| 81 | uint lst_blksize; |
| 82 | uvlong lst_blocks; |
| 83 | uint lst_atime; |
| 84 | uint lst_atime_nsec; |
| 85 | uint lst_mtime; |
| 86 | uint lst_mtime_nsec; |
| 87 | uint lst_ctime; |
| 88 | uint lst_ctime_nsec; |
| 89 | uvlong lst_ino; |
| 90 | }; |
| 91 | |
| 92 | static void |
| 93 | ustat2linuxstat64(Ustat *x, struct linux_stat64 *s) |
| 94 | { |
| 95 | memset(s, 0, sizeof(*s)); |
| 96 | s->lst_dev = x->dev; |
| 97 | s->lst_ino = x->ino; |
| 98 | s->__lst_ino = x->ino & 0xFFFFFFFF; |
| 99 | s->lst_mode = x->mode; |
| 100 | s->lst_nlink = 1; |
| 101 | s->lst_uid = x->uid; |
| 102 | s->lst_gid = x->gid; |
| 103 | s->lst_size = x->size; |
| 104 | s->lst_rdev = x->rdev; |
| 105 | s->lst_blksize = 4096; // good as any |
| 106 | s->lst_blocks = (x->size+s->lst_blksize-1) / s->lst_blksize; |
| 107 | s->lst_atime = x->atime; |
| 108 | s->lst_mtime = x->mtime; |
| 109 | s->lst_ctime = x->ctime; |
| 110 | } |
| 111 | |
| 112 | int sys_linux_stat(char *path, void *st) |
| 113 | { |
| 114 | int err; |
| 115 | Ustat x; |
| 116 | |
| 117 | trace("sys_linux_stat(%s, %p)", path, st); |
| 118 | err = fsstat(path, 0, &x); |
| 119 | if(err < 0) |
| 120 | return err; |
| 121 | ustat2linuxstat(&x, (struct linux_stat*)st); |
| 122 | return err; |
| 123 | } |
| 124 | |
| 125 | int sys_linux_lstat(char *path, void *st) |
| 126 | { |
| 127 | int err; |
| 128 | Ustat x; |
| 129 | |
| 130 | trace("sys_linux_lstat(%s, %p)", path, st); |
| 131 | |
| 132 | if((path = fsfullpath(path)) == nil) |
| 133 | return -EFAULT; |
| 134 | err = fsstat(path, 1, &x); |
| 135 | free(path); |
| 136 | |
| 137 | if(err < 0) |
| 138 | return err; |
| 139 | ustat2linuxstat(&x, (struct linux_stat*)st); |
| 140 | return err; |
| 141 | } |
| 142 | |
| 143 | int sys_linux_stat64(char *path, void *st) |
| 144 | { |
| 145 | int err; |
| 146 | Ustat x; |
| 147 | |
| 148 | trace("sys_linux_stat64(%s, %p)", path, st); |
| 149 | |
| 150 | if((path = fsfullpath(path)) == nil) |
| 151 | return -EFAULT; |
| 152 | err = fsstat(path, 0, &x); |
| 153 | free(path); |
| 154 | |
| 155 | if(err < 0) |
| 156 | return err; |
| 157 | ustat2linuxstat64(&x, (struct linux_stat64*)st); |
| 158 | return err; |
| 159 | } |
| 160 | |
| 161 | int sys_linux_lstat64(char *path, void *st) |
| 162 | { |
| 163 | int err; |
| 164 | Ustat x; |
| 165 | |
| 166 | trace("sys_linux_lstat64(%s, %p)", path, st); |
| 167 | |
| 168 | if((path = fsfullpath(path)) == nil) |
| 169 | return -EFAULT; |
| 170 | err = fsstat(path, 1, &x); |
| 171 | free(path); |
| 172 | |
| 173 | if(err < 0) |
| 174 | return err; |
| 175 | ustat2linuxstat64(&x, (struct linux_stat64*)st); |
| 176 | return err; |
| 177 | } |
| 178 | |
| 179 | int sys_linux_fstat(int fd, void *st) |
| 180 | { |
| 181 | int err; |
| 182 | Ustat x; |
| 183 | |
| 184 | trace("sys_linux_fstat(%d, %p)", fd, st); |
| 185 | |
| 186 | err = ufstat(fd, &x); |
| 187 | if(err < 0) |
| 188 | return err; |
| 189 | ustat2linuxstat(&x, (struct linux_stat*)st); |
| 190 | return err; |
| 191 | } |
| 192 | |
| 193 | int sys_linux_fstat64(int fd, void *st) |
| 194 | { |
| 195 | int err; |
| 196 | Ustat x; |
| 197 | |
| 198 | trace("sys_linux_fstat64(%d, %p)", fd, st); |
| 199 | |
| 200 | err = ufstat(fd, &x); |
| 201 | if(err < 0) |
| 202 | return err; |
| 203 | ustat2linuxstat64(&x, (struct linux_stat64*)st); |
| 204 | return err; |
| 205 | } |
| 206 | |
| 207 | static int |
| 208 | getdents(int fd, void *buf, int len, int (*fconv)(Udirent *, void *, int, int)) |
| 209 | { |
| 210 | Ufile *f; |
| 211 | Udirent *t, *x; |
| 212 | uchar *p, *e; |
| 213 | int o, r, err; |
| 214 | |
| 215 | if((f = fdgetfile(fd)) == nil) |
| 216 | return -EBADF; |
| 217 | o = 0; |
| 218 | p = buf; |
| 219 | e = p + len; |
| 220 | t = f->rdaux; |
| 221 | if(t == nil || f->off == 0){ |
| 222 | f->rdaux = nil; |
| 223 | while(x = t){ |
| 224 | t = t->next; |
| 225 | free(x); |
| 226 | } |
| 227 | if((err = devtab[f->dev]->readdir(f, &t)) <= 0){ |
| 228 | putfile(f); |
| 229 | return err; |
| 230 | } |
| 231 | f->rdaux = t; |
| 232 | } |
| 233 | for(; t; t=t->next){ |
| 234 | /* just calculate size */ |
| 235 | r = fconv(t, nil, 0, e - p); |
| 236 | if(r <= 0) |
| 237 | break; |
| 238 | if(o >= f->off){ |
| 239 | /* convert */ |
| 240 | f->off = o + r; |
| 241 | r = fconv(t, p, t->next ? f->off : 0, e - p); |
| 242 | p += r; |
| 243 | } |
| 244 | o += r; |
| 245 | } |
| 246 | putfile(f); |
| 247 | return p - (uchar*)buf; |
| 248 | } |
| 249 | |
| 250 | Udirent* |
| 251 | newdirent(char *path, char *name, int mode) |
| 252 | { |
| 253 | Udirent *d; |
| 254 | int nlen; |
| 255 | char *s; |
| 256 | |
| 257 | nlen = strlen(name); |
| 258 | d = kmallocz(sizeof(*d) + nlen + 1, 1); |
| 259 | d->mode = mode; |
| 260 | strcpy(d->name, name); |
| 261 | s = allocpath(path, nil, d->name); |
| 262 | d->ino = hashpath(s); |
| 263 | free(s); |
| 264 | |
| 265 | return d; |
| 266 | } |
| 267 | |
| 268 | struct linux_dirent { |
| 269 | long d_ino; |
| 270 | long d_off; |
| 271 | ushort d_reclen; |
| 272 | char d_name[]; |
| 273 | }; |
| 274 | |
| 275 | static int |
| 276 | udirent2linux(Udirent *u, void *d, int off, int left) |
| 277 | { |
| 278 | int n; |
| 279 | struct linux_dirent *e = d; |
| 280 | |
| 281 | n = sizeof(*e) + strlen(u->name) + 1; |
| 282 | if(n > left) |
| 283 | return 0; |
| 284 | if(e){ |
| 285 | e->d_ino = u->ino & 0xFFFFFFFF; |
| 286 | e->d_off = off; |
| 287 | e->d_reclen = n; |
| 288 | strcpy(e->d_name, u->name); |
| 289 | } |
| 290 | return n; |
| 291 | } |
| 292 | |
| 293 | struct linux_dirent64 { |
| 294 | uvlong d_ino; |
| 295 | vlong d_off; |
| 296 | ushort d_reclen; |
| 297 | uchar d_type; |
| 298 | char d_name[]; |
| 299 | }; |
| 300 | |
| 301 | static int |
| 302 | udirent2linux64(Udirent *u, void *d, int off, int left) |
| 303 | { |
| 304 | int n; |
| 305 | struct linux_dirent64 *e = d; |
| 306 | |
| 307 | n = sizeof(*e) + strlen(u->name) + 1; |
| 308 | if(n > left) |
| 309 | return 0; |
| 310 | if(e){ |
| 311 | e->d_ino = u->ino; |
| 312 | e->d_off = off; |
| 313 | e->d_reclen = n; |
| 314 | e->d_type = (u->mode>>12)&15; |
| 315 | strcpy(e->d_name, u->name); |
| 316 | } |
| 317 | return n; |
| 318 | } |
| 319 | |
| 320 | int sys_linux_getdents(int fd, void *buf, int nbuf) |
| 321 | { |
| 322 | trace("sys_linux_getdents(%d, %p, %x)", fd, buf, nbuf); |
| 323 | |
| 324 | return getdents(fd, buf, nbuf, udirent2linux); |
| 325 | } |
| 326 | |
| 327 | int sys_linux_getdents64(int fd, void *buf, int nbuf) |
| 328 | { |
| 329 | trace("sys_linux_getdents64(%d, %p, %x)", fd, buf, nbuf); |
| 330 | |
| 331 | return getdents(fd, buf, nbuf, udirent2linux64); |
| 332 | } |
| 333 | |
| 334 | struct linux_statfs { |
| 335 | long f_type; |
| 336 | long f_bsize; |
| 337 | long f_blocks; |
| 338 | long f_bfree; |
| 339 | long f_bavail; |
| 340 | long f_files; |
| 341 | long f_ffree; |
| 342 | long f_fsid[2]; |
| 343 | long f_namelen; |
| 344 | long f_frsize; |
| 345 | long f_spare[5]; |
| 346 | }; |
| 347 | |
| 348 | int sys_statfs(char *name, void *pstatfs) |
| 349 | { |
| 350 | struct linux_statfs *s = pstatfs; |
| 351 | |
| 352 | trace("sys_statfs(%s, %p)", name, s); |
| 353 | |
| 354 | if((s == nil) || (name == nil)) |
| 355 | return -EINVAL; |
| 356 | |
| 357 | memset(s, 0, sizeof(*s)); |
| 358 | |
| 359 | s->f_namelen = 256; |
| 360 | s->f_bsize = 4096; |
| 361 | s->f_blocks = 0x80000000; |
| 362 | s->f_bavail = s->f_bfree = 0x80000000; |
| 363 | s->f_files = s->f_ffree = 0x40000000; |
| 364 | |
| 365 | if(strncmp(name, "/dev/pts", 8) == 0){ |
| 366 | s->f_type = 0x1cd1; |
| 367 | return 0; |
| 368 | } |
| 369 | |
| 370 | memmove(&s->f_type, "PLN9", 4); |
| 371 | memmove(s->f_fsid, "PLAN9_FS", 8); |
| 372 | |
| 373 | return 0; |
| 374 | } |
| 375 | |
| 376 | int |
| 377 | sys_getxattr(char *path, char *name, void *value, int size) |
| 378 | { |
| 379 | trace("sys_getxattr(%s, %s, %p, %x)", path, name, value, size); |
| 380 | |
| 381 | return -EOPNOTSUPP; |
| 382 | } |
| 383 | |
| 384 | int |
| 385 | sys_lgetxattr(char *path, char *name, void *value, int size) |
| 386 | { |
| 387 | trace("sys_lgetxattr(%s, %s, %p, %x)", path, name, value, size); |
| 388 | |
| 389 | return -EOPNOTSUPP; |
| 390 | } |
| 391 | |
| 392 | int |
| 393 | sys_fgetxattr(int fd, char *name, void *value, int size) |
| 394 | { |
| 395 | Ufile *f; |
| 396 | int err; |
| 397 | |
| 398 | trace("sys_fgetxattr(%d, %s, %p, %x)", fd, name, value, size); |
| 399 | |
| 400 | if((f = fdgetfile(fd)) == nil) |
| 401 | return -EBADF; |
| 402 | err = -EOPNOTSUPP; |
| 403 | putfile(f); |
| 404 | |
| 405 | return err; |
| 406 | } |
| 407 | |
| 408 | int |
| 409 | sys_setxattr(char *path, char *name, void *value, int flags, int size) |
| 410 | { |
| 411 | trace("sys_setxattr(%s, %s, %p, %x, %x)", path, name, value, flags, size); |
| 412 | |
| 413 | return -EOPNOTSUPP; |
| 414 | } |
| 415 | |
| 416 | int |
| 417 | sys_lsetxattr(char *path, char *name, void *value, int flags, int size) |
| 418 | { |
| 419 | trace("sys_lsetxattr(%s, %s, %p, %x, %x)", path, name, value, flags, size); |
| 420 | |
| 421 | return -EOPNOTSUPP; |
| 422 | } |
| 423 | |
| 424 | int |
| 425 | sys_fsetxattr(int fd, char *name, void *value, int size, int flags) |
| 426 | { |
| 427 | Ufile *f; |
| 428 | int err; |
| 429 | |
| 430 | trace("sys_fsetxattr(%d, %s, %p, %x, %x)", fd, name, value, flags, size); |
| 431 | |
| 432 | if((f = fdgetfile(fd)) == nil) |
| 433 | return -EBADF; |
| 434 | err = -EOPNOTSUPP; |
| 435 | putfile(f); |
| 436 | return err; |
| 437 | } |