| 1 | /*- |
| 2 | * Copyright (c) 1998 John D. Polstra |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 24 | * SUCH DAMAGE. |
| 25 | * |
| 26 | * $FreeBSD: src/usr.bin/gcore/elfcore.c,v 1.5.2.3 2001/07/11 23:59:11 obrien Exp $ |
| 27 | * $DragonFly: src/usr.bin/gcore/elfcore.c,v 1.5 2008/06/05 18:06:33 swildner Exp $ |
| 28 | */ |
| 29 | |
| 30 | #define _KERNEL_STRUCTURES |
| 31 | |
| 32 | #include <sys/param.h> |
| 33 | #include <sys/lock.h> |
| 34 | #include <sys/procfs.h> |
| 35 | #include <machine/elf.h> |
| 36 | #include <vm/vm_param.h> |
| 37 | #include <vm/vm.h> |
| 38 | #include <vm/pmap.h> |
| 39 | #include <vm/vm_map.h> |
| 40 | #include <err.h> |
| 41 | #include <errno.h> |
| 42 | #include <fcntl.h> |
| 43 | #include <stdio.h> |
| 44 | #include <stdlib.h> |
| 45 | #include <string.h> |
| 46 | #include <unistd.h> |
| 47 | |
| 48 | #include "extern.h" |
| 49 | |
| 50 | /* |
| 51 | * Code for generating ELF core dumps. |
| 52 | */ |
| 53 | |
| 54 | typedef void (*segment_callback)(vm_map_entry_t, void *); |
| 55 | |
| 56 | /* Closure for cb_put_phdr(). */ |
| 57 | struct phdr_closure { |
| 58 | Elf_Phdr *phdr; /* Program header to fill in */ |
| 59 | Elf_Off offset; /* Offset of segment in core file */ |
| 60 | }; |
| 61 | |
| 62 | /* Closure for cb_size_segment(). */ |
| 63 | struct sseg_closure { |
| 64 | int count; /* Count of writable segments. */ |
| 65 | size_t size; /* Total size of all writable segments. */ |
| 66 | }; |
| 67 | |
| 68 | static void cb_put_phdr(vm_map_entry_t, void *); |
| 69 | static void cb_size_segment(vm_map_entry_t, void *); |
| 70 | static void each_writable_segment(vm_map_entry_t, segment_callback, |
| 71 | void *closure); |
| 72 | static void elf_corehdr(int fd, pid_t, vm_map_entry_t, int numsegs, |
| 73 | void *hdr, size_t hdrsize); |
| 74 | static void elf_puthdr(vm_map_entry_t, void *, size_t *, |
| 75 | const prstatus_t *, const prfpregset_t *, const prpsinfo_t *, int numsegs); |
| 76 | static void elf_putnote(void *dst, size_t *off, const char *name, int type, |
| 77 | const void *desc, size_t descsz); |
| 78 | static void freemap(vm_map_entry_t); |
| 79 | static void readhdrinfo(pid_t, prstatus_t *, prfpregset_t *, prpsinfo_t *); |
| 80 | static vm_map_entry_t readmap(pid_t); |
| 81 | |
| 82 | /* |
| 83 | * Write an ELF coredump for the given pid to the given fd. |
| 84 | */ |
| 85 | void |
| 86 | elf_coredump(int fd, pid_t pid) |
| 87 | { |
| 88 | vm_map_entry_t map; |
| 89 | struct sseg_closure seginfo; |
| 90 | void *hdr; |
| 91 | size_t hdrsize; |
| 92 | char memname[64]; |
| 93 | int memfd; |
| 94 | Elf_Phdr *php; |
| 95 | int i; |
| 96 | |
| 97 | /* Get the program's memory map. */ |
| 98 | map = readmap(pid); |
| 99 | |
| 100 | /* Size the program segments. */ |
| 101 | seginfo.count = 0; |
| 102 | seginfo.size = 0; |
| 103 | each_writable_segment(map, cb_size_segment, &seginfo); |
| 104 | |
| 105 | /* |
| 106 | * Calculate the size of the core file header area by making |
| 107 | * a dry run of generating it. Nothing is written, but the |
| 108 | * size is calculated. |
| 109 | */ |
| 110 | hdrsize = 0; |
| 111 | elf_puthdr(map, NULL, &hdrsize, NULL, NULL, NULL, seginfo.count); |
| 112 | |
| 113 | /* |
| 114 | * Allocate memory for building the header, fill it up, |
| 115 | * and write it out. |
| 116 | */ |
| 117 | hdr = malloc(hdrsize); |
| 118 | if ((hdr = malloc(hdrsize)) == NULL) |
| 119 | errx(1, "out of memory"); |
| 120 | elf_corehdr(fd, pid, map, seginfo.count, hdr, hdrsize); |
| 121 | |
| 122 | /* Write the contents of all of the writable segments. */ |
| 123 | snprintf(memname, sizeof memname, "/proc/%d/mem", pid); |
| 124 | if ((memfd = open(memname, O_RDONLY)) == -1) |
| 125 | err(1, "cannot open %s", memname); |
| 126 | |
| 127 | php = (Elf_Phdr *)((char *)hdr + sizeof(Elf_Ehdr)) + 1; |
| 128 | for (i = 0; i < seginfo.count; i++) { |
| 129 | int nleft = php->p_filesz; |
| 130 | |
| 131 | lseek(memfd, (off_t)php->p_vaddr, SEEK_SET); |
| 132 | while (nleft > 0) { |
| 133 | char buf[8*1024]; |
| 134 | int nwant; |
| 135 | int ngot; |
| 136 | |
| 137 | nwant = nleft; |
| 138 | if (nwant > sizeof buf) |
| 139 | nwant = sizeof buf; |
| 140 | ngot = read(memfd, buf, nwant); |
| 141 | if (ngot == -1) |
| 142 | err(1, "read from %s", memname); |
| 143 | if (ngot < nwant) |
| 144 | errx(1, "short read from %s:" |
| 145 | " wanted %d, got %d\n", memname, |
| 146 | nwant, ngot); |
| 147 | ngot = write(fd, buf, nwant); |
| 148 | if (ngot == -1) |
| 149 | err(1, "write of segment %d failed", i); |
| 150 | if (ngot != nwant) |
| 151 | errx(1, "short write"); |
| 152 | nleft -= nwant; |
| 153 | } |
| 154 | php++; |
| 155 | } |
| 156 | close(memfd); |
| 157 | free(hdr); |
| 158 | freemap(map); |
| 159 | } |
| 160 | |
| 161 | /* |
| 162 | * A callback for each_writable_segment() to write out the segment's |
| 163 | * program header entry. |
| 164 | */ |
| 165 | static void |
| 166 | cb_put_phdr(vm_map_entry_t entry, void *closure) |
| 167 | { |
| 168 | struct phdr_closure *phc = (struct phdr_closure *)closure; |
| 169 | Elf_Phdr *phdr = phc->phdr; |
| 170 | |
| 171 | phc->offset = round_page(phc->offset); |
| 172 | |
| 173 | phdr->p_type = PT_LOAD; |
| 174 | phdr->p_offset = phc->offset; |
| 175 | phdr->p_vaddr = entry->start; |
| 176 | phdr->p_paddr = 0; |
| 177 | phdr->p_filesz = phdr->p_memsz = entry->end - entry->start; |
| 178 | phdr->p_align = PAGE_SIZE; |
| 179 | phdr->p_flags = 0; |
| 180 | if (entry->protection & VM_PROT_READ) |
| 181 | phdr->p_flags |= PF_R; |
| 182 | if (entry->protection & VM_PROT_WRITE) |
| 183 | phdr->p_flags |= PF_W; |
| 184 | if (entry->protection & VM_PROT_EXECUTE) |
| 185 | phdr->p_flags |= PF_X; |
| 186 | |
| 187 | phc->offset += phdr->p_filesz; |
| 188 | phc->phdr++; |
| 189 | } |
| 190 | |
| 191 | /* |
| 192 | * A callback for each_writable_segment() to gather information about |
| 193 | * the number of segments and their total size. |
| 194 | */ |
| 195 | static void |
| 196 | cb_size_segment(vm_map_entry_t entry, void *closure) |
| 197 | { |
| 198 | struct sseg_closure *ssc = (struct sseg_closure *)closure; |
| 199 | |
| 200 | ssc->count++; |
| 201 | ssc->size += entry->end - entry->start; |
| 202 | } |
| 203 | |
| 204 | /* |
| 205 | * For each segment in the given memory map, call the given function |
| 206 | * with a pointer to the map entry and some arbitrary caller-supplied |
| 207 | * data. |
| 208 | */ |
| 209 | static void |
| 210 | each_writable_segment(vm_map_entry_t map, segment_callback func, void *closure) |
| 211 | { |
| 212 | vm_map_entry_t entry; |
| 213 | |
| 214 | for (entry = map; entry != NULL; entry = entry->next) |
| 215 | (*func)(entry, closure); |
| 216 | } |
| 217 | |
| 218 | /* |
| 219 | * Write the core file header to the file, including padding up to |
| 220 | * the page boundary. |
| 221 | */ |
| 222 | static void |
| 223 | elf_corehdr(int fd, pid_t pid, vm_map_entry_t map, int numsegs, void *hdr, |
| 224 | size_t hdrsize) |
| 225 | { |
| 226 | size_t off; |
| 227 | prstatus_t status; |
| 228 | prfpregset_t fpregset; |
| 229 | prpsinfo_t psinfo; |
| 230 | |
| 231 | /* Gather the information for the header. */ |
| 232 | readhdrinfo(pid, &status, &fpregset, &psinfo); |
| 233 | |
| 234 | /* Fill in the header. */ |
| 235 | memset(hdr, 0, hdrsize); |
| 236 | off = 0; |
| 237 | elf_puthdr(map, hdr, &off, &status, &fpregset, &psinfo, numsegs); |
| 238 | |
| 239 | /* Write it to the core file. */ |
| 240 | if (write(fd, hdr, hdrsize) == -1) |
| 241 | err(1, "write"); |
| 242 | } |
| 243 | |
| 244 | /* |
| 245 | * Generate the ELF coredump header into the buffer at "dst". "dst" may |
| 246 | * be NULL, in which case the header is sized but not actually generated. |
| 247 | */ |
| 248 | static void |
| 249 | elf_puthdr(vm_map_entry_t map, void *dst, size_t *off, const prstatus_t *status, |
| 250 | const prfpregset_t *fpregset, const prpsinfo_t *psinfo, int numsegs) |
| 251 | { |
| 252 | size_t ehoff; |
| 253 | size_t phoff; |
| 254 | size_t noteoff; |
| 255 | size_t notesz; |
| 256 | |
| 257 | ehoff = *off; |
| 258 | *off += sizeof(Elf_Ehdr); |
| 259 | |
| 260 | phoff = *off; |
| 261 | *off += (numsegs + 1) * sizeof(Elf_Phdr); |
| 262 | |
| 263 | noteoff = *off; |
| 264 | elf_putnote(dst, off, "FreeBSD", NT_PRSTATUS, status, |
| 265 | sizeof *status); |
| 266 | elf_putnote(dst, off, "FreeBSD", NT_FPREGSET, fpregset, |
| 267 | sizeof *fpregset); |
| 268 | elf_putnote(dst, off, "FreeBSD", NT_PRPSINFO, psinfo, |
| 269 | sizeof *psinfo); |
| 270 | notesz = *off - noteoff; |
| 271 | |
| 272 | /* Align up to a page boundary for the program segments. */ |
| 273 | *off = round_page(*off); |
| 274 | |
| 275 | if (dst != NULL) { |
| 276 | Elf_Ehdr *ehdr; |
| 277 | Elf_Phdr *phdr; |
| 278 | struct phdr_closure phc; |
| 279 | |
| 280 | /* |
| 281 | * Fill in the ELF header. |
| 282 | */ |
| 283 | ehdr = (Elf_Ehdr *)((char *)dst + ehoff); |
| 284 | ehdr->e_ident[EI_MAG0] = ELFMAG0; |
| 285 | ehdr->e_ident[EI_MAG1] = ELFMAG1; |
| 286 | ehdr->e_ident[EI_MAG2] = ELFMAG2; |
| 287 | ehdr->e_ident[EI_MAG3] = ELFMAG3; |
| 288 | ehdr->e_ident[EI_CLASS] = ELF_CLASS; |
| 289 | ehdr->e_ident[EI_DATA] = ELF_DATA; |
| 290 | ehdr->e_ident[EI_VERSION] = EV_CURRENT; |
| 291 | ehdr->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; |
| 292 | ehdr->e_ident[EI_ABIVERSION] = 0; |
| 293 | ehdr->e_ident[EI_PAD] = 0; |
| 294 | ehdr->e_type = ET_CORE; |
| 295 | ehdr->e_machine = ELF_ARCH; |
| 296 | ehdr->e_version = EV_CURRENT; |
| 297 | ehdr->e_entry = 0; |
| 298 | ehdr->e_phoff = phoff; |
| 299 | ehdr->e_flags = 0; |
| 300 | ehdr->e_ehsize = sizeof(Elf_Ehdr); |
| 301 | ehdr->e_phentsize = sizeof(Elf_Phdr); |
| 302 | ehdr->e_phnum = numsegs + 1; |
| 303 | ehdr->e_shentsize = sizeof(Elf_Shdr); |
| 304 | ehdr->e_shnum = 0; |
| 305 | ehdr->e_shstrndx = SHN_UNDEF; |
| 306 | |
| 307 | /* |
| 308 | * Fill in the program header entries. |
| 309 | */ |
| 310 | phdr = (Elf_Phdr *)((char *)dst + phoff); |
| 311 | |
| 312 | /* The note segement. */ |
| 313 | phdr->p_type = PT_NOTE; |
| 314 | phdr->p_offset = noteoff; |
| 315 | phdr->p_vaddr = 0; |
| 316 | phdr->p_paddr = 0; |
| 317 | phdr->p_filesz = notesz; |
| 318 | phdr->p_memsz = 0; |
| 319 | phdr->p_flags = 0; |
| 320 | phdr->p_align = 0; |
| 321 | phdr++; |
| 322 | |
| 323 | /* All the writable segments from the program. */ |
| 324 | phc.phdr = phdr; |
| 325 | phc.offset = *off; |
| 326 | each_writable_segment(map, cb_put_phdr, &phc); |
| 327 | } |
| 328 | } |
| 329 | |
| 330 | /* |
| 331 | * Emit one note section to "dst", or just size it if "dst" is NULL. |
| 332 | */ |
| 333 | static void |
| 334 | elf_putnote(void *dst, size_t *off, const char *name, int type, |
| 335 | const void *desc, size_t descsz) |
| 336 | { |
| 337 | Elf_Note note; |
| 338 | |
| 339 | note.n_namesz = strlen(name) + 1; |
| 340 | note.n_descsz = descsz; |
| 341 | note.n_type = type; |
| 342 | if (dst != NULL) |
| 343 | bcopy(¬e, (char *)dst + *off, sizeof note); |
| 344 | *off += sizeof note; |
| 345 | if (dst != NULL) |
| 346 | bcopy(name, (char *)dst + *off, note.n_namesz); |
| 347 | *off += roundup2(note.n_namesz, sizeof(Elf_Size)); |
| 348 | if (dst != NULL) |
| 349 | bcopy(desc, (char *)dst + *off, note.n_descsz); |
| 350 | *off += roundup2(note.n_descsz, sizeof(Elf_Size)); |
| 351 | } |
| 352 | |
| 353 | /* |
| 354 | * Free the memory map. |
| 355 | */ |
| 356 | static void |
| 357 | freemap(vm_map_entry_t map) |
| 358 | { |
| 359 | while (map != NULL) { |
| 360 | vm_map_entry_t next = map->next; |
| 361 | free(map); |
| 362 | map = next; |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | /* |
| 367 | * Read the process information necessary to fill in the core file's header. |
| 368 | */ |
| 369 | static void |
| 370 | readhdrinfo(pid_t pid, prstatus_t *status, prfpregset_t *fpregset, |
| 371 | prpsinfo_t *psinfo) |
| 372 | { |
| 373 | char name[64]; |
| 374 | char line[256]; |
| 375 | int fd; |
| 376 | int i; |
| 377 | int n; |
| 378 | |
| 379 | memset(status, 0, sizeof *status); |
| 380 | status->pr_version = PRSTATUS_VERSION; |
| 381 | status->pr_statussz = sizeof(prstatus_t); |
| 382 | status->pr_gregsetsz = sizeof(gregset_t); |
| 383 | status->pr_fpregsetsz = sizeof(fpregset_t); |
| 384 | status->pr_osreldate = __DragonFly_version; |
| 385 | status->pr_pid = pid; |
| 386 | |
| 387 | memset(fpregset, 0, sizeof *fpregset); |
| 388 | |
| 389 | memset(psinfo, 0, sizeof *psinfo); |
| 390 | psinfo->pr_version = PRPSINFO_VERSION; |
| 391 | psinfo->pr_psinfosz = sizeof(prpsinfo_t); |
| 392 | |
| 393 | /* Read the general registers. */ |
| 394 | snprintf(name, sizeof name, "/proc/%d/regs", pid); |
| 395 | if ((fd = open(name, O_RDONLY)) == -1) |
| 396 | err(1, "cannot open %s", name); |
| 397 | if ((n = read(fd, &status->pr_reg, sizeof status->pr_reg)) == -1) |
| 398 | err(1, "read error from %s", name); |
| 399 | if (n < sizeof status->pr_reg) |
| 400 | errx(1, "short read from %s: wanted %zu, got %d", |
| 401 | name, sizeof(status->pr_reg), n); |
| 402 | close(fd); |
| 403 | |
| 404 | /* Read the floating point registers. */ |
| 405 | snprintf(name, sizeof name, "/proc/%d/fpregs", pid); |
| 406 | if ((fd = open(name, O_RDONLY)) == -1) |
| 407 | err(1, "cannot open %s", name); |
| 408 | if ((n = read(fd, fpregset, sizeof *fpregset)) == -1) |
| 409 | err(1, "read error from %s", name); |
| 410 | if (n < sizeof *fpregset) |
| 411 | errx(1, "short read from %s: wanted %zu, got %d", |
| 412 | name, sizeof(*fpregset), n); |
| 413 | close(fd); |
| 414 | |
| 415 | /* Read and parse the process status. */ |
| 416 | snprintf(name, sizeof name, "/proc/%d/status", pid); |
| 417 | if ((fd = open(name, O_RDONLY)) == -1) |
| 418 | err(1, "cannot open %s", name); |
| 419 | if ((n = read(fd, line, sizeof line - 1)) == -1) |
| 420 | err(1, "read error from %s", name); |
| 421 | if (n > MAXCOMLEN) |
| 422 | n = MAXCOMLEN; |
| 423 | for (i = 0; i < n && line[i] != ' '; i++) |
| 424 | psinfo->pr_fname[i] = line[i]; |
| 425 | strncpy(psinfo->pr_psargs, psinfo->pr_fname, PRARGSZ); |
| 426 | close(fd); |
| 427 | } |
| 428 | |
| 429 | /* |
| 430 | * Read the process's memory map using procfs, and return a list of |
| 431 | * VM map entries. Only the non-device read/writable segments are |
| 432 | * returned. The map entries in the list aren't fully filled in; only |
| 433 | * the items we need are present. |
| 434 | */ |
| 435 | static vm_map_entry_t |
| 436 | readmap(pid_t pid) |
| 437 | { |
| 438 | char mapname[64]; |
| 439 | int mapfd; |
| 440 | ssize_t mapsize; |
| 441 | size_t bufsize; |
| 442 | char *mapbuf; |
| 443 | int pos; |
| 444 | vm_map_entry_t map; |
| 445 | vm_map_entry_t *linkp; |
| 446 | |
| 447 | snprintf(mapname, sizeof mapname, "/proc/%d/map", pid); |
| 448 | if ((mapfd = open(mapname, O_RDONLY)) == -1) |
| 449 | err(1, "cannot open %s", mapname); |
| 450 | |
| 451 | /* |
| 452 | * Procfs requires (for consistency) that the entire memory map |
| 453 | * be read with a single read() call. Start with a reasonbly sized |
| 454 | * buffer, and double it until it is big enough. |
| 455 | */ |
| 456 | bufsize = 8 * 1024; |
| 457 | mapbuf = NULL; |
| 458 | for ( ; ; ) { |
| 459 | if ((mapbuf = realloc(mapbuf, bufsize + 1)) == NULL) |
| 460 | errx(1, "out of memory"); |
| 461 | mapsize = read(mapfd, mapbuf, bufsize); |
| 462 | if (mapsize != -1 || errno != EFBIG) |
| 463 | break; |
| 464 | bufsize *= 2; |
| 465 | /* This lseek shouldn't be necessary, but it is. */ |
| 466 | lseek(mapfd, (off_t)0, SEEK_SET); |
| 467 | } |
| 468 | if (mapsize == -1) |
| 469 | err(1, "read error from %s", mapname); |
| 470 | if (mapsize == 0) |
| 471 | errx(1, "empty map file %s", mapname); |
| 472 | mapbuf[mapsize] = 0; |
| 473 | close(mapfd); |
| 474 | |
| 475 | pos = 0; |
| 476 | map = NULL; |
| 477 | linkp = ↦ |
| 478 | while (pos < mapsize) { |
| 479 | vm_map_entry_t ent; |
| 480 | vm_offset_t start; |
| 481 | vm_offset_t end; |
| 482 | char prot[4]; |
| 483 | char type[16]; |
| 484 | int n; |
| 485 | int len; |
| 486 | |
| 487 | len = 0; |
| 488 | n = sscanf(mapbuf + pos, "%p %p %*d %*d %*x %3[-rwx]" |
| 489 | " %*d %*d %*x %*s %*s %16s%*[\n]%n", |
| 490 | &start, &end, prot, type, &len); |
| 491 | if (n != 4) |
| 492 | errx(1, "ill-formed line in %s", mapname); |
| 493 | pos += len; |
| 494 | |
| 495 | /* Ignore segments of the wrong kind, and unwritable ones */ |
| 496 | if (strncmp(prot, "rw", 2) != 0 || |
| 497 | (strcmp(type, "default") != 0 && |
| 498 | strcmp(type, "vnode") != 0 && |
| 499 | strcmp(type, "swap") != 0)) |
| 500 | continue; |
| 501 | |
| 502 | if ((ent = (vm_map_entry_t)calloc(1, sizeof *ent)) == NULL) |
| 503 | errx(1, "out of memory"); |
| 504 | ent->start = start; |
| 505 | ent->end = end; |
| 506 | ent->protection = VM_PROT_READ | VM_PROT_WRITE; |
| 507 | if (prot[2] == 'x') |
| 508 | ent->protection |= VM_PROT_EXECUTE; |
| 509 | |
| 510 | *linkp = ent; |
| 511 | linkp = &ent->next; |
| 512 | } |
| 513 | free(mapbuf); |
| 514 | return map; |
| 515 | } |