1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 /* 27 * Copyright 2012 DEY Storage Systems, Inc. All rights reserved. 28 * Copyright 2018 Joyent, Inc. 29 * Copyright (c) 2013 by Delphix. All rights reserved. 30 * Copyright 2020 OmniOS Community Edition (OmniOSce) Association. 31 * Copyright 2021 Oxide Computer Company 32 */ 33 34 #define _STRUCTURED_PROC 1 35 36 #include <stdlib.h> 37 #include <ctype.h> 38 #include <string.h> 39 #include <strings.h> 40 #include <errno.h> 41 #include <procfs.h> 42 #include <priv.h> 43 #include <sys/elf.h> 44 #include <sys/machelf.h> 45 #include <sys/sysmacros.h> 46 #include <sys/systeminfo.h> 47 #include <sys/proc.h> 48 #include <sys/utsname.h> 49 50 #include <sys/old_procfs.h> 51 52 #include "Pcontrol.h" 53 #include "P32ton.h" 54 #include "proc_fd.h" 55 56 typedef enum { 57 STR_NONE, 58 STR_CTF, 59 STR_SYMTAB, 60 STR_DYNSYM, 61 STR_STRTAB, 62 STR_DYNSTR, 63 STR_SHSTRTAB, 64 STR_NUM 65 } shstrtype_t; 66 67 static const char *shstrtab_data[] = { 68 "", 69 ".SUNW_ctf", 70 ".symtab", 71 ".dynsym", 72 ".strtab", 73 ".dynstr", 74 ".shstrtab" 75 }; 76 77 typedef struct shstrtab { 78 int sst_ndx[STR_NUM]; 79 int sst_cur; 80 } shstrtab_t; 81 82 typedef struct { 83 struct ps_prochandle *P; 84 int pgc_fd; 85 off64_t *pgc_poff; 86 off64_t *pgc_soff; 87 off64_t *pgc_doff; 88 core_content_t pgc_content; 89 void *pgc_chunk; 90 size_t pgc_chunksz; 91 92 shstrtab_t pgc_shstrtab; 93 } pgcore_t; 94 95 typedef struct { 96 int fd_fd; 97 off64_t *fd_doff; 98 } fditer_t; 99 100 static int 101 gc_pwrite64(int fd, const void *buf, size_t len, off64_t off) 102 { 103 int err; 104 105 err = pwrite64(fd, buf, len, off); 106 107 if (err < 0) 108 return (err); 109 110 /* 111 * We will take a page from ZFS's book here and use the otherwise 112 * unused EBADE to mean a short write. Typically this will actually 113 * result from ENOSPC or EDQUOT, but we can't be sure. 114 */ 115 if (err < len) { 116 errno = EBADE; 117 return (-1); 118 } 119 120 return (0); 121 } 122 123 static void 124 shstrtab_init(shstrtab_t *s) 125 { 126 bzero(&s->sst_ndx, sizeof (s->sst_ndx)); 127 s->sst_cur = 1; 128 } 129 130 static int 131 shstrtab_ndx(shstrtab_t *s, shstrtype_t type) 132 { 133 int ret; 134 135 if ((ret = s->sst_ndx[type]) != 0 || type == STR_NONE) 136 return (ret); 137 138 ret = s->sst_ndx[type] = s->sst_cur; 139 s->sst_cur += strlen(shstrtab_data[type]) + 1; 140 141 return (ret); 142 } 143 144 static size_t 145 shstrtab_size(const shstrtab_t *s) 146 { 147 return (s->sst_cur); 148 } 149 150 int 151 Pgcore(struct ps_prochandle *P, const char *fname, core_content_t content) 152 { 153 int fd; 154 int err; 155 int saved_errno; 156 157 if ((fd = creat64(fname, 0666)) < 0) 158 return (-1); 159 160 if ((err = Pfgcore(P, fd, content)) != 0) { 161 saved_errno = errno; 162 (void) close(fd); 163 (void) unlink(fname); 164 errno = saved_errno; 165 return (err); 166 } 167 168 return (close(fd)); 169 } 170 171 /* 172 * Since we don't want to use the old-school procfs interfaces, we use the 173 * new-style data structures we already have to construct the old-style 174 * data structures. We include these data structures in core files for 175 * backward compatability. 176 */ 177 178 static void 179 mkprstatus(struct ps_prochandle *P, const lwpstatus_t *lsp, 180 const lwpsinfo_t *lip, prstatus_t *psp) 181 { 182 bzero(psp, sizeof (*psp)); 183 184 if (lsp->pr_flags & PR_STOPPED) 185 psp->pr_flags = 0x0001; 186 if (lsp->pr_flags & PR_ISTOP) 187 psp->pr_flags = 0x0002; 188 if (lsp->pr_flags & PR_DSTOP) 189 psp->pr_flags = 0x0004; 190 if (lsp->pr_flags & PR_ASLEEP) 191 psp->pr_flags = 0x0008; 192 if (lsp->pr_flags & PR_FORK) 193 psp->pr_flags = 0x0010; 194 if (lsp->pr_flags & PR_RLC) 195 psp->pr_flags = 0x0020; 196 /* 197 * Note that PR_PTRACE (0x0040) from <sys/old_procfs.h> is never set; 198 * PR_PCOMPAT corresponds to PR_PTRACE in the newer <sys/procfs.h>. 199 */ 200 if (lsp->pr_flags & PR_PCINVAL) 201 psp->pr_flags = 0x0080; 202 if (lsp->pr_flags & PR_ISSYS) 203 psp->pr_flags = 0x0100; 204 if (lsp->pr_flags & PR_STEP) 205 psp->pr_flags = 0x0200; 206 if (lsp->pr_flags & PR_KLC) 207 psp->pr_flags = 0x0400; 208 if (lsp->pr_flags & PR_ASYNC) 209 psp->pr_flags = 0x0800; 210 if (lsp->pr_flags & PR_PTRACE) 211 psp->pr_flags = 0x1000; 212 if (lsp->pr_flags & PR_MSACCT) 213 psp->pr_flags = 0x2000; 214 if (lsp->pr_flags & PR_BPTADJ) 215 psp->pr_flags = 0x4000; 216 if (lsp->pr_flags & PR_ASLWP) 217 psp->pr_flags = 0x8000; 218 219 psp->pr_why = lsp->pr_why; 220 psp->pr_what = lsp->pr_what; 221 psp->pr_info = lsp->pr_info; 222 psp->pr_cursig = lsp->pr_cursig; 223 psp->pr_nlwp = P->status.pr_nlwp; 224 psp->pr_sigpend = P->status.pr_sigpend; 225 psp->pr_sighold = lsp->pr_lwphold; 226 psp->pr_altstack = lsp->pr_altstack; 227 psp->pr_action = lsp->pr_action; 228 psp->pr_pid = P->status.pr_pid; 229 psp->pr_ppid = P->status.pr_ppid; 230 psp->pr_pgrp = P->status.pr_pgid; 231 psp->pr_sid = P->status.pr_sid; 232 psp->pr_utime = P->status.pr_utime; 233 psp->pr_stime = P->status.pr_stime; 234 psp->pr_cutime = P->status.pr_cutime; 235 psp->pr_cstime = P->status.pr_cstime; 236 (void) strncpy(psp->pr_clname, lsp->pr_clname, sizeof (psp->pr_clname)); 237 psp->pr_syscall = lsp->pr_syscall; 238 psp->pr_nsysarg = lsp->pr_nsysarg; 239 bcopy(lsp->pr_sysarg, psp->pr_sysarg, sizeof (psp->pr_sysarg)); 240 psp->pr_who = lsp->pr_lwpid; 241 psp->pr_lwppend = lsp->pr_lwppend; 242 psp->pr_oldcontext = (ucontext_t *)lsp->pr_oldcontext; 243 psp->pr_brkbase = (caddr_t)P->status.pr_brkbase; 244 psp->pr_brksize = P->status.pr_brksize; 245 psp->pr_stkbase = (caddr_t)P->status.pr_stkbase; 246 psp->pr_stksize = P->status.pr_stksize; 247 psp->pr_processor = (short)lip->pr_onpro; 248 psp->pr_bind = (short)lip->pr_bindpro; 249 psp->pr_instr = lsp->pr_instr; 250 bcopy(lsp->pr_reg, psp->pr_reg, sizeof (psp->pr_sysarg)); 251 } 252 253 static void 254 mkprpsinfo(struct ps_prochandle *P, prpsinfo_t *psp) 255 { 256 bzero(psp, sizeof (*psp)); 257 psp->pr_state = P->psinfo.pr_lwp.pr_state; 258 psp->pr_sname = P->psinfo.pr_lwp.pr_sname; 259 psp->pr_zomb = (psp->pr_state == SZOMB); 260 psp->pr_nice = P->psinfo.pr_lwp.pr_nice; 261 psp->pr_flag = P->psinfo.pr_lwp.pr_flag; 262 psp->pr_uid = P->psinfo.pr_uid; 263 psp->pr_gid = P->psinfo.pr_gid; 264 psp->pr_pid = P->psinfo.pr_pid; 265 psp->pr_ppid = P->psinfo.pr_ppid; 266 psp->pr_pgrp = P->psinfo.pr_pgid; 267 psp->pr_sid = P->psinfo.pr_sid; 268 psp->pr_addr = (caddr_t)P->psinfo.pr_addr; 269 psp->pr_size = P->psinfo.pr_size; 270 psp->pr_rssize = P->psinfo.pr_rssize; 271 psp->pr_wchan = (caddr_t)P->psinfo.pr_lwp.pr_wchan; 272 psp->pr_start = P->psinfo.pr_start; 273 psp->pr_time = P->psinfo.pr_time; 274 psp->pr_pri = P->psinfo.pr_lwp.pr_pri; 275 psp->pr_oldpri = P->psinfo.pr_lwp.pr_oldpri; 276 psp->pr_cpu = P->psinfo.pr_lwp.pr_cpu; 277 psp->pr_ottydev = cmpdev(P->psinfo.pr_ttydev); 278 psp->pr_lttydev = P->psinfo.pr_ttydev; 279 (void) strncpy(psp->pr_clname, P->psinfo.pr_lwp.pr_clname, 280 sizeof (psp->pr_clname)); 281 (void) strncpy(psp->pr_fname, P->psinfo.pr_fname, 282 sizeof (psp->pr_fname)); 283 bcopy(&P->psinfo.pr_psargs, &psp->pr_psargs, 284 sizeof (psp->pr_psargs)); 285 psp->pr_syscall = P->psinfo.pr_lwp.pr_syscall; 286 psp->pr_ctime = P->psinfo.pr_ctime; 287 psp->pr_bysize = psp->pr_size * PAGESIZE; 288 psp->pr_byrssize = psp->pr_rssize * PAGESIZE; 289 psp->pr_argc = P->psinfo.pr_argc; 290 psp->pr_argv = (char **)P->psinfo.pr_argv; 291 psp->pr_envp = (char **)P->psinfo.pr_envp; 292 psp->pr_wstat = P->psinfo.pr_wstat; 293 psp->pr_pctcpu = P->psinfo.pr_pctcpu; 294 psp->pr_pctmem = P->psinfo.pr_pctmem; 295 psp->pr_euid = P->psinfo.pr_euid; 296 psp->pr_egid = P->psinfo.pr_egid; 297 psp->pr_aslwpid = 0; 298 psp->pr_dmodel = P->psinfo.pr_dmodel; 299 } 300 301 #ifdef _LP64 302 303 static void 304 mkprstatus32(struct ps_prochandle *P, const lwpstatus_t *lsp, 305 const lwpsinfo_t *lip, prstatus32_t *psp) 306 { 307 bzero(psp, sizeof (*psp)); 308 309 if (lsp->pr_flags & PR_STOPPED) 310 psp->pr_flags = 0x0001; 311 if (lsp->pr_flags & PR_ISTOP) 312 psp->pr_flags = 0x0002; 313 if (lsp->pr_flags & PR_DSTOP) 314 psp->pr_flags = 0x0004; 315 if (lsp->pr_flags & PR_ASLEEP) 316 psp->pr_flags = 0x0008; 317 if (lsp->pr_flags & PR_FORK) 318 psp->pr_flags = 0x0010; 319 if (lsp->pr_flags & PR_RLC) 320 psp->pr_flags = 0x0020; 321 /* 322 * Note that PR_PTRACE (0x0040) from <sys/old_procfs.h> is never set; 323 * PR_PCOMPAT corresponds to PR_PTRACE in the newer <sys/procfs.h>. 324 */ 325 if (lsp->pr_flags & PR_PCINVAL) 326 psp->pr_flags = 0x0080; 327 if (lsp->pr_flags & PR_ISSYS) 328 psp->pr_flags = 0x0100; 329 if (lsp->pr_flags & PR_STEP) 330 psp->pr_flags = 0x0200; 331 if (lsp->pr_flags & PR_KLC) 332 psp->pr_flags = 0x0400; 333 if (lsp->pr_flags & PR_ASYNC) 334 psp->pr_flags = 0x0800; 335 if (lsp->pr_flags & PR_PTRACE) 336 psp->pr_flags = 0x1000; 337 if (lsp->pr_flags & PR_MSACCT) 338 psp->pr_flags = 0x2000; 339 if (lsp->pr_flags & PR_BPTADJ) 340 psp->pr_flags = 0x4000; 341 if (lsp->pr_flags & PR_ASLWP) 342 psp->pr_flags = 0x8000; 343 344 psp->pr_why = lsp->pr_why; 345 psp->pr_what = lsp->pr_what; 346 siginfo_n_to_32(&lsp->pr_info, &psp->pr_info); 347 psp->pr_cursig = lsp->pr_cursig; 348 psp->pr_nlwp = P->status.pr_nlwp; 349 psp->pr_sigpend = P->status.pr_sigpend; 350 psp->pr_sighold = lsp->pr_lwphold; 351 stack_n_to_32(&lsp->pr_altstack, &psp->pr_altstack); 352 sigaction_n_to_32(&lsp->pr_action, &psp->pr_action); 353 psp->pr_pid = P->status.pr_pid; 354 psp->pr_ppid = P->status.pr_ppid; 355 psp->pr_pgrp = P->status.pr_pgid; 356 psp->pr_sid = P->status.pr_sid; 357 timestruc_n_to_32(&P->status.pr_utime, &psp->pr_utime); 358 timestruc_n_to_32(&P->status.pr_stime, &psp->pr_stime); 359 timestruc_n_to_32(&P->status.pr_cutime, &psp->pr_cutime); 360 timestruc_n_to_32(&P->status.pr_cstime, &psp->pr_cstime); 361 (void) strncpy(psp->pr_clname, lsp->pr_clname, sizeof (psp->pr_clname)); 362 psp->pr_syscall = lsp->pr_syscall; 363 psp->pr_nsysarg = lsp->pr_nsysarg; 364 bcopy(lsp->pr_sysarg, psp->pr_sysarg, sizeof (psp->pr_sysarg)); 365 psp->pr_who = lsp->pr_lwpid; 366 psp->pr_lwppend = lsp->pr_lwppend; 367 psp->pr_oldcontext = (caddr32_t)lsp->pr_oldcontext; 368 psp->pr_brkbase = (caddr32_t)P->status.pr_brkbase; 369 psp->pr_brksize = P->status.pr_brksize; 370 psp->pr_stkbase = (caddr32_t)P->status.pr_stkbase; 371 psp->pr_stksize = P->status.pr_stksize; 372 psp->pr_processor = (short)lip->pr_onpro; 373 psp->pr_bind = (short)lip->pr_bindpro; 374 psp->pr_instr = lsp->pr_instr; 375 bcopy(lsp->pr_reg, psp->pr_reg, sizeof (psp->pr_sysarg)); 376 } 377 378 static void 379 mkprpsinfo32(struct ps_prochandle *P, prpsinfo32_t *psp) 380 { 381 bzero(psp, sizeof (*psp)); 382 psp->pr_state = P->psinfo.pr_lwp.pr_state; 383 psp->pr_sname = P->psinfo.pr_lwp.pr_sname; 384 psp->pr_zomb = (psp->pr_state == SZOMB); 385 psp->pr_nice = P->psinfo.pr_lwp.pr_nice; 386 psp->pr_flag = P->psinfo.pr_lwp.pr_flag; 387 psp->pr_uid = P->psinfo.pr_uid; 388 psp->pr_gid = P->psinfo.pr_gid; 389 psp->pr_pid = P->psinfo.pr_pid; 390 psp->pr_ppid = P->psinfo.pr_ppid; 391 psp->pr_pgrp = P->psinfo.pr_pgid; 392 psp->pr_sid = P->psinfo.pr_sid; 393 psp->pr_addr = (caddr32_t)P->psinfo.pr_addr; 394 psp->pr_size = P->psinfo.pr_size; 395 psp->pr_rssize = P->psinfo.pr_rssize; 396 psp->pr_wchan = (caddr32_t)P->psinfo.pr_lwp.pr_wchan; 397 timestruc_n_to_32(&P->psinfo.pr_start, &psp->pr_start); 398 timestruc_n_to_32(&P->psinfo.pr_time, &psp->pr_time); 399 psp->pr_pri = P->psinfo.pr_lwp.pr_pri; 400 psp->pr_oldpri = P->psinfo.pr_lwp.pr_oldpri; 401 psp->pr_cpu = P->psinfo.pr_lwp.pr_cpu; 402 psp->pr_ottydev = cmpdev(P->psinfo.pr_ttydev); 403 psp->pr_lttydev = prcmpldev(P->psinfo.pr_ttydev); 404 (void) strncpy(psp->pr_clname, P->psinfo.pr_lwp.pr_clname, 405 sizeof (psp->pr_clname)); 406 (void) strncpy(psp->pr_fname, P->psinfo.pr_fname, 407 sizeof (psp->pr_fname)); 408 bcopy(&P->psinfo.pr_psargs, &psp->pr_psargs, 409 sizeof (psp->pr_psargs)); 410 psp->pr_syscall = P->psinfo.pr_lwp.pr_syscall; 411 timestruc_n_to_32(&P->psinfo.pr_ctime, &psp->pr_ctime); 412 psp->pr_bysize = psp->pr_size * PAGESIZE; 413 psp->pr_byrssize = psp->pr_rssize * PAGESIZE; 414 psp->pr_argc = P->psinfo.pr_argc; 415 psp->pr_argv = (caddr32_t)P->psinfo.pr_argv; 416 psp->pr_envp = (caddr32_t)P->psinfo.pr_envp; 417 psp->pr_wstat = P->psinfo.pr_wstat; 418 psp->pr_pctcpu = P->psinfo.pr_pctcpu; 419 psp->pr_pctmem = P->psinfo.pr_pctmem; 420 psp->pr_euid = P->psinfo.pr_euid; 421 psp->pr_egid = P->psinfo.pr_egid; 422 psp->pr_aslwpid = 0; 423 psp->pr_dmodel = P->psinfo.pr_dmodel; 424 } 425 426 #endif /* _LP64 */ 427 428 static int 429 write_note(int fd, uint_t type, const void *desc, size_t descsz, off64_t *offp) 430 { 431 /* 432 * Note headers are the same regardless of the data model of the 433 * ELF file; we arbitrarily use Elf64_Nhdr here. 434 */ 435 struct { 436 Elf64_Nhdr nhdr; 437 char name[8]; 438 } n; 439 440 bzero(&n, sizeof (n)); 441 bcopy("CORE", n.name, 4); 442 n.nhdr.n_type = type; 443 n.nhdr.n_namesz = 5; 444 n.nhdr.n_descsz = roundup(descsz, 4); 445 446 if (gc_pwrite64(fd, &n, sizeof (n), *offp) != 0) 447 return (-1); 448 449 *offp += sizeof (n); 450 451 if (gc_pwrite64(fd, desc, n.nhdr.n_descsz, *offp) != 0) 452 return (-1); 453 454 *offp += n.nhdr.n_descsz; 455 456 return (0); 457 } 458 459 static int 460 old_per_lwp(void *data, const lwpstatus_t *lsp, const lwpsinfo_t *lip) 461 { 462 pgcore_t *pgc = data; 463 struct ps_prochandle *P = pgc->P; 464 465 /* 466 * Legacy core files don't contain information about zombie LWPs. 467 * We use Plwp_iter_all() so that we get the lwpsinfo_t structure 468 * more cheaply. 469 */ 470 if (lsp == NULL) 471 return (0); 472 473 if (P->status.pr_dmodel == PR_MODEL_NATIVE) { 474 prstatus_t prstatus; 475 mkprstatus(P, lsp, lip, &prstatus); 476 if (write_note(pgc->pgc_fd, NT_PRSTATUS, &prstatus, 477 sizeof (prstatus_t), pgc->pgc_doff) != 0) 478 return (0); 479 if (write_note(pgc->pgc_fd, NT_PRFPREG, &lsp->pr_fpreg, 480 sizeof (prfpregset_t), pgc->pgc_doff) != 0) 481 return (1); 482 #ifdef _LP64 483 } else { 484 prstatus32_t pr32; 485 prfpregset32_t pf32; 486 mkprstatus32(P, lsp, lip, &pr32); 487 if (write_note(pgc->pgc_fd, NT_PRSTATUS, &pr32, 488 sizeof (prstatus32_t), pgc->pgc_doff) != 0) 489 return (1); 490 prfpregset_n_to_32(&lsp->pr_fpreg, &pf32); 491 if (write_note(pgc->pgc_fd, NT_PRFPREG, &pf32, 492 sizeof (prfpregset32_t), pgc->pgc_doff) != 0) 493 return (1); 494 #endif /* _LP64 */ 495 } 496 497 #ifdef sparc 498 { 499 prxregset_t xregs; 500 if (Plwp_getxregs(P, lsp->pr_lwpid, &xregs) == 0 && 501 write_note(pgc->pgc_fd, NT_PRXREG, &xregs, 502 sizeof (prxregset_t), pgc->pgc_doff) != 0) 503 return (1); 504 } 505 #endif /* sparc */ 506 507 return (0); 508 } 509 510 static int 511 new_per_lwp(void *data, const lwpstatus_t *lsp, const lwpsinfo_t *lip) 512 { 513 pgcore_t *pgc = data; 514 struct ps_prochandle *P = pgc->P; 515 prlwpname_t name = { 0, "" }; 516 psinfo_t ps; 517 518 /* 519 * If lsp is NULL this indicates that this is a zombie LWP in 520 * which case we dump only the lwpsinfo_t structure and none of 521 * the other ancillary LWP state data. 522 */ 523 if (P->status.pr_dmodel == PR_MODEL_NATIVE) { 524 if (write_note(pgc->pgc_fd, NT_LWPSINFO, lip, 525 sizeof (lwpsinfo_t), pgc->pgc_doff) != 0) 526 return (1); 527 if (lsp == NULL) 528 return (0); 529 if (write_note(pgc->pgc_fd, NT_LWPSTATUS, lsp, 530 sizeof (lwpstatus_t), pgc->pgc_doff) != 0) 531 return (1); 532 #ifdef _LP64 533 } else { 534 lwpsinfo32_t li32; 535 lwpstatus32_t ls32; 536 lwpsinfo_n_to_32(lip, &li32); 537 if (write_note(pgc->pgc_fd, NT_LWPSINFO, &li32, 538 sizeof (lwpsinfo32_t), pgc->pgc_doff) != 0) 539 return (1); 540 if (lsp == NULL) 541 return (0); 542 lwpstatus_n_to_32(lsp, &ls32); 543 if (write_note(pgc->pgc_fd, NT_LWPSTATUS, &ls32, 544 sizeof (lwpstatus32_t), pgc->pgc_doff) != 0) 545 return (1); 546 #endif /* _LP64 */ 547 } 548 549 #ifdef sparc 550 { 551 prxregset_t xregs; 552 gwindows_t gwins; 553 size_t size; 554 555 if (Plwp_getxregs(P, lsp->pr_lwpid, &xregs) == 0) { 556 if (write_note(pgc->pgc_fd, NT_PRXREG, &xregs, 557 sizeof (prxregset_t), pgc->pgc_doff) != 0) 558 return (1); 559 } 560 561 if (Plwp_getgwindows(P, lsp->pr_lwpid, &gwins) == 0 && 562 gwins.wbcnt > 0) { 563 size = sizeof (gwins) - sizeof (gwins.wbuf) + 564 gwins.wbcnt * sizeof (gwins.wbuf[0]); 565 566 if (write_note(pgc->pgc_fd, NT_GWINDOWS, &gwins, size, 567 pgc->pgc_doff) != 0) 568 return (1); 569 } 570 571 } 572 #ifdef __sparcv9 573 if (P->status.pr_dmodel == PR_MODEL_LP64) { 574 asrset_t asrs; 575 if (Plwp_getasrs(P, lsp->pr_lwpid, asrs) == 0) { 576 if (write_note(pgc->pgc_fd, NT_ASRS, &asrs, 577 sizeof (asrset_t), pgc->pgc_doff) != 0) 578 return (1); 579 } 580 } 581 #endif /* __sparcv9 */ 582 #endif /* sparc */ 583 584 if (Plwp_getname(P, lsp->pr_lwpid, name.pr_lwpname, 585 sizeof (name.pr_lwpname)) == 0) { 586 name.pr_lwpid = lsp->pr_lwpid; 587 if (write_note(pgc->pgc_fd, NT_LWPNAME, &name, 588 sizeof (name), pgc->pgc_doff) != 0) 589 return (1); 590 } 591 592 if (!(lsp->pr_flags & PR_AGENT)) 593 return (0); 594 595 if (Plwp_getspymaster(P, lsp->pr_lwpid, &ps) != 0) 596 return (0); 597 598 if (P->status.pr_dmodel == PR_MODEL_NATIVE) { 599 if (write_note(pgc->pgc_fd, NT_SPYMASTER, &ps, 600 sizeof (psinfo_t), pgc->pgc_doff) != 0) 601 return (1); 602 #ifdef _LP64 603 } else { 604 psinfo32_t ps32; 605 psinfo_n_to_32(&ps, &ps32); 606 if (write_note(pgc->pgc_fd, NT_SPYMASTER, &ps32, 607 sizeof (psinfo32_t), pgc->pgc_doff) != 0) 608 return (1); 609 #endif /* _LP64 */ 610 } 611 612 613 return (0); 614 } 615 616 static int 617 iter_fd(void *data, const prfdinfo_t *fdinfo) 618 { 619 fditer_t *iter = data; 620 prfdinfo_core_t core; 621 int ret = 0; 622 623 if (proc_fdinfo_to_core(fdinfo, &core) != 0) 624 return (1); 625 626 ret = write_note(iter->fd_fd, NT_FDINFO, &core, 627 sizeof (core), iter->fd_doff); 628 629 if (ret != 0) 630 return (1); 631 return (0); 632 } 633 634 static uint_t 635 count_sections(pgcore_t *pgc) 636 { 637 struct ps_prochandle *P = pgc->P; 638 file_info_t *fptr; 639 uint_t nshdrs = 0; 640 641 if (!(pgc->pgc_content & (CC_CONTENT_CTF | CC_CONTENT_SYMTAB))) 642 return (0); 643 644 for (fptr = list_head(&P->file_head); fptr != NULL; 645 fptr = list_next(&P->file_head, fptr)) { 646 int hit_symtab = 0; 647 648 Pbuild_file_symtab(P, fptr); 649 650 if ((pgc->pgc_content & CC_CONTENT_CTF) && 651 Pbuild_file_ctf(P, fptr) != NULL) { 652 sym_tbl_t *sym; 653 654 nshdrs++; 655 656 if (fptr->file_ctf_dyn) { 657 sym = &fptr->file_dynsym; 658 } else { 659 sym = &fptr->file_symtab; 660 hit_symtab = 1; 661 } 662 663 if (sym->sym_data_pri != NULL && sym->sym_symn != 0 && 664 sym->sym_strs != NULL) 665 nshdrs += 2; 666 } 667 668 if ((pgc->pgc_content & CC_CONTENT_SYMTAB) && !hit_symtab && 669 fptr->file_symtab.sym_data_pri != NULL && 670 fptr->file_symtab.sym_symn != 0 && 671 fptr->file_symtab.sym_strs != NULL) { 672 nshdrs += 2; 673 } 674 } 675 676 return (nshdrs == 0 ? 0 : nshdrs + 2); 677 } 678 679 static int 680 write_shdr(pgcore_t *pgc, shstrtype_t name, uint_t type, ulong_t flags, 681 uintptr_t addr, ulong_t offset, size_t size, uint_t link, uint_t info, 682 uintptr_t addralign, uintptr_t entsize) 683 { 684 if (pgc->P->status.pr_dmodel == PR_MODEL_ILP32) { 685 Elf32_Shdr shdr; 686 687 bzero(&shdr, sizeof (shdr)); 688 shdr.sh_name = shstrtab_ndx(&pgc->pgc_shstrtab, name); 689 shdr.sh_type = type; 690 shdr.sh_flags = flags; 691 shdr.sh_addr = (Elf32_Addr)addr; 692 shdr.sh_offset = offset; 693 shdr.sh_size = size; 694 shdr.sh_link = link; 695 shdr.sh_info = info; 696 shdr.sh_addralign = addralign; 697 shdr.sh_entsize = entsize; 698 699 if (gc_pwrite64(pgc->pgc_fd, &shdr, sizeof (shdr), 700 *pgc->pgc_soff) != 0) 701 return (-1); 702 703 *pgc->pgc_soff += sizeof (shdr); 704 #ifdef _LP64 705 } else { 706 Elf64_Shdr shdr; 707 708 bzero(&shdr, sizeof (shdr)); 709 shdr.sh_name = shstrtab_ndx(&pgc->pgc_shstrtab, name); 710 shdr.sh_type = type; 711 shdr.sh_flags = flags; 712 shdr.sh_addr = addr; 713 shdr.sh_offset = offset; 714 shdr.sh_size = size; 715 shdr.sh_link = link; 716 shdr.sh_info = info; 717 shdr.sh_addralign = addralign; 718 shdr.sh_entsize = entsize; 719 720 if (gc_pwrite64(pgc->pgc_fd, &shdr, sizeof (shdr), 721 *pgc->pgc_soff) != 0) 722 return (-1); 723 724 *pgc->pgc_soff += sizeof (shdr); 725 #endif /* _LP64 */ 726 } 727 728 return (0); 729 } 730 731 static int 732 dump_symtab(pgcore_t *pgc, file_info_t *fptr, uint_t index, int dynsym) 733 { 734 sym_tbl_t *sym = dynsym ? &fptr->file_dynsym : &fptr->file_symtab; 735 shstrtype_t symname = dynsym ? STR_DYNSYM : STR_SYMTAB; 736 shstrtype_t strname = dynsym ? STR_DYNSTR : STR_STRTAB; 737 uint_t symtype = dynsym ? SHT_DYNSYM : SHT_SYMTAB; 738 size_t size; 739 uintptr_t addr = fptr->file_map->map_pmap.pr_vaddr; 740 741 if (sym->sym_data_pri == NULL || sym->sym_symn == 0 || 742 sym->sym_strs == NULL) 743 return (0); 744 745 size = sym->sym_hdr_pri.sh_size; 746 if (gc_pwrite64(pgc->pgc_fd, sym->sym_data_pri->d_buf, size, 747 *pgc->pgc_doff) != 0) 748 return (-1); 749 750 if (write_shdr(pgc, symname, symtype, 0, addr, *pgc->pgc_doff, size, 751 index + 1, sym->sym_hdr_pri.sh_info, sym->sym_hdr_pri.sh_addralign, 752 sym->sym_hdr_pri.sh_entsize) != 0) 753 return (-1); 754 755 *pgc->pgc_doff += roundup(size, 8); 756 757 size = sym->sym_strhdr.sh_size; 758 if (gc_pwrite64(pgc->pgc_fd, sym->sym_strs, size, *pgc->pgc_doff) != 0) 759 return (-1); 760 761 if (write_shdr(pgc, strname, SHT_STRTAB, SHF_STRINGS, addr, 762 *pgc->pgc_doff, size, 0, 0, 1, 0) != 0) 763 return (-1); 764 765 *pgc->pgc_doff += roundup(size, 8); 766 767 return (0); 768 } 769 770 static int 771 dump_sections(pgcore_t *pgc) 772 { 773 struct ps_prochandle *P = pgc->P; 774 file_info_t *fptr; 775 uint_t index = 1; 776 777 if (!(pgc->pgc_content & (CC_CONTENT_CTF | CC_CONTENT_SYMTAB))) 778 return (0); 779 780 for (fptr = list_head(&P->file_head); fptr != NULL; 781 fptr = list_next(&P->file_head, fptr)) { 782 int hit_symtab = 0; 783 784 Pbuild_file_symtab(P, fptr); 785 786 if ((pgc->pgc_content & CC_CONTENT_CTF) && 787 Pbuild_file_ctf(P, fptr) != NULL) { 788 sym_tbl_t *sym; 789 uint_t dynsym; 790 uint_t symindex = 0; 791 792 /* 793 * Write the symtab out first so we can correctly 794 * set the sh_link field in the CTF section header. 795 * symindex will be 0 if there is no corresponding 796 * symbol table section. 797 */ 798 if (fptr->file_ctf_dyn) { 799 sym = &fptr->file_dynsym; 800 dynsym = 1; 801 } else { 802 sym = &fptr->file_symtab; 803 dynsym = 0; 804 hit_symtab = 1; 805 } 806 807 if (sym->sym_data_pri != NULL && sym->sym_symn != 0 && 808 sym->sym_strs != NULL) { 809 symindex = index; 810 if (dump_symtab(pgc, fptr, index, dynsym) != 0) 811 return (-1); 812 index += 2; 813 } 814 815 /* 816 * Write the CTF data that we've read out of the 817 * file itself into the core file. 818 */ 819 if (gc_pwrite64(pgc->pgc_fd, fptr->file_ctf_buf, 820 fptr->file_ctf_size, *pgc->pgc_doff) != 0) 821 return (-1); 822 823 if (write_shdr(pgc, STR_CTF, SHT_PROGBITS, 0, 824 fptr->file_map->map_pmap.pr_vaddr, *pgc->pgc_doff, 825 fptr->file_ctf_size, symindex, 0, 4, 0) != 0) 826 return (-1); 827 828 index++; 829 *pgc->pgc_doff += roundup(fptr->file_ctf_size, 8); 830 } 831 832 if ((pgc->pgc_content & CC_CONTENT_SYMTAB) && !hit_symtab && 833 fptr->file_symtab.sym_data_pri != NULL && 834 fptr->file_symtab.sym_symn != 0 && 835 fptr->file_symtab.sym_strs != NULL) { 836 if (dump_symtab(pgc, fptr, index, 0) != 0) 837 return (-1); 838 index += 2; 839 } 840 } 841 842 return (0); 843 } 844 845 /*ARGSUSED*/ 846 static int 847 dump_map(void *data, const prmap_t *pmp, const char *name) 848 { 849 pgcore_t *pgc = data; 850 struct ps_prochandle *P = pgc->P; 851 #ifdef _LP64 852 Elf64_Phdr phdr; 853 #else 854 Elf32_Phdr phdr; 855 #endif 856 size_t n; 857 858 bzero(&phdr, sizeof (phdr)); 859 phdr.p_type = PT_LOAD; 860 phdr.p_vaddr = pmp->pr_vaddr; 861 phdr.p_memsz = pmp->pr_size; 862 if (pmp->pr_mflags & MA_READ) 863 phdr.p_flags |= PF_R; 864 if (pmp->pr_mflags & MA_WRITE) 865 phdr.p_flags |= PF_W; 866 if (pmp->pr_mflags & MA_EXEC) 867 phdr.p_flags |= PF_X; 868 869 if (pmp->pr_vaddr + pmp->pr_size > P->status.pr_stkbase && 870 pmp->pr_vaddr < P->status.pr_stkbase + P->status.pr_stksize) { 871 if (!(pgc->pgc_content & CC_CONTENT_STACK)) 872 goto exclude; 873 874 } else if ((pmp->pr_mflags & MA_ANON) && 875 pmp->pr_vaddr + pmp->pr_size > P->status.pr_brkbase && 876 pmp->pr_vaddr < P->status.pr_brkbase + P->status.pr_brksize) { 877 if (!(pgc->pgc_content & CC_CONTENT_HEAP)) 878 goto exclude; 879 880 } else if (pmp->pr_mflags & MA_ISM) { 881 if (pmp->pr_mflags & MA_NORESERVE) { 882 if (!(pgc->pgc_content & CC_CONTENT_DISM)) 883 goto exclude; 884 } else { 885 if (!(pgc->pgc_content & CC_CONTENT_ISM)) 886 goto exclude; 887 } 888 889 } else if (pmp->pr_mflags & MA_SHM) { 890 if (!(pgc->pgc_content & CC_CONTENT_SHM)) 891 goto exclude; 892 893 } else if (pmp->pr_mflags & MA_SHARED) { 894 if (pmp->pr_mflags & MA_ANON) { 895 if (!(pgc->pgc_content & CC_CONTENT_SHANON)) 896 goto exclude; 897 } else { 898 if (!(pgc->pgc_content & CC_CONTENT_SHFILE)) 899 goto exclude; 900 } 901 902 } else if (pmp->pr_mflags & MA_ANON) { 903 if (!(pgc->pgc_content & CC_CONTENT_ANON)) 904 goto exclude; 905 906 } else if (phdr.p_flags == (PF_R | PF_X)) { 907 if (!(pgc->pgc_content & CC_CONTENT_TEXT)) 908 goto exclude; 909 910 } else if (phdr.p_flags == PF_R) { 911 if (!(pgc->pgc_content & CC_CONTENT_RODATA)) 912 goto exclude; 913 914 } else { 915 if (!(pgc->pgc_content & CC_CONTENT_DATA)) 916 goto exclude; 917 } 918 919 n = 0; 920 while (n < pmp->pr_size) { 921 size_t csz = MIN(pmp->pr_size - n, pgc->pgc_chunksz); 922 ssize_t ret; 923 924 /* 925 * If we happen to have a PROT_NONE mapping, don't try to read 926 * from the address space. 927 */ 928 if ((pmp->pr_mflags & (MA_READ | MA_WRITE | MA_EXEC)) == 0) { 929 bzero(pgc->pgc_chunk, csz); 930 ret = csz; 931 } else { 932 ret = Pread(P, pgc->pgc_chunk, csz, pmp->pr_vaddr + n); 933 } 934 935 /* 936 * If we can't read out part of the victim's address 937 * space for some reason ignore that failure and try to 938 * emit a partial core file without that mapping's data. 939 * As in the kernel, we mark these failures with the 940 * PF_SUNW_FAILURE flag and store the errno where the 941 * mapping would have been. 942 */ 943 if (ret != csz || gc_pwrite64(pgc->pgc_fd, pgc->pgc_chunk, csz, 944 *pgc->pgc_doff + n) != 0) { 945 int err = errno; 946 (void) gc_pwrite64(pgc->pgc_fd, &err, sizeof (err), 947 *pgc->pgc_doff); 948 *pgc->pgc_doff += roundup(sizeof (err), 8); 949 950 phdr.p_flags |= PF_SUNW_FAILURE; 951 (void) ftruncate64(pgc->pgc_fd, *pgc->pgc_doff); 952 goto exclude; 953 } 954 955 n += csz; 956 } 957 958 phdr.p_offset = *pgc->pgc_doff; 959 phdr.p_filesz = pmp->pr_size; 960 *pgc->pgc_doff += roundup(phdr.p_filesz, 8); 961 962 exclude: 963 if (P->status.pr_dmodel == PR_MODEL_NATIVE) { 964 if (gc_pwrite64(pgc->pgc_fd, &phdr, sizeof (phdr), 965 *pgc->pgc_poff) != 0) 966 return (1); 967 968 *pgc->pgc_poff += sizeof (phdr); 969 #ifdef _LP64 970 } else { 971 Elf32_Phdr phdr32; 972 973 bzero(&phdr32, sizeof (phdr32)); 974 phdr32.p_type = phdr.p_type; 975 phdr32.p_vaddr = (Elf32_Addr)phdr.p_vaddr; 976 phdr32.p_memsz = (Elf32_Word)phdr.p_memsz; 977 phdr32.p_flags = phdr.p_flags; 978 phdr32.p_offset = (Elf32_Off)phdr.p_offset; 979 phdr32.p_filesz = (Elf32_Word)phdr.p_filesz; 980 981 if (gc_pwrite64(pgc->pgc_fd, &phdr32, sizeof (phdr32), 982 *pgc->pgc_poff) != 0) 983 return (1); 984 985 *pgc->pgc_poff += sizeof (phdr32); 986 #endif /* _LP64 */ 987 } 988 989 return (0); 990 } 991 992 int 993 write_shstrtab(struct ps_prochandle *P, pgcore_t *pgc) 994 { 995 off64_t off = *pgc->pgc_doff; 996 size_t size = 0; 997 shstrtab_t *s = &pgc->pgc_shstrtab; 998 int i, ndx; 999 1000 if (shstrtab_size(s) == 1) 1001 return (0); 1002 1003 /* 1004 * Preemptively stick the name of the shstrtab in the string table. 1005 */ 1006 (void) shstrtab_ndx(&pgc->pgc_shstrtab, STR_SHSTRTAB); 1007 size = shstrtab_size(s); 1008 1009 /* 1010 * Dump all the strings that we used being sure we include the 1011 * terminating null character. 1012 */ 1013 for (i = 0; i < STR_NUM; i++) { 1014 if ((ndx = s->sst_ndx[i]) != 0 || i == STR_NONE) { 1015 const char *str = shstrtab_data[i]; 1016 size_t len = strlen(str) + 1; 1017 if (gc_pwrite64(pgc->pgc_fd, str, len, off + ndx) != 0) 1018 return (1); 1019 } 1020 } 1021 1022 if (P->status.pr_dmodel == PR_MODEL_ILP32) { 1023 Elf32_Shdr shdr; 1024 1025 bzero(&shdr, sizeof (shdr)); 1026 shdr.sh_name = shstrtab_ndx(&pgc->pgc_shstrtab, STR_SHSTRTAB); 1027 shdr.sh_size = size; 1028 shdr.sh_offset = *pgc->pgc_doff; 1029 shdr.sh_addralign = 1; 1030 shdr.sh_flags = SHF_STRINGS; 1031 shdr.sh_type = SHT_STRTAB; 1032 1033 if (gc_pwrite64(pgc->pgc_fd, &shdr, sizeof (shdr), 1034 *pgc->pgc_soff) != 0) 1035 return (1); 1036 1037 *pgc->pgc_soff += sizeof (shdr); 1038 #ifdef _LP64 1039 } else { 1040 Elf64_Shdr shdr; 1041 1042 bzero(&shdr, sizeof (shdr)); 1043 shdr.sh_name = shstrtab_ndx(&pgc->pgc_shstrtab, STR_SHSTRTAB); 1044 shdr.sh_size = size; 1045 shdr.sh_offset = *pgc->pgc_doff; 1046 shdr.sh_addralign = 1; 1047 shdr.sh_flags = SHF_STRINGS; 1048 shdr.sh_type = SHT_STRTAB; 1049 1050 if (gc_pwrite64(pgc->pgc_fd, &shdr, sizeof (shdr), 1051 *pgc->pgc_soff) != 0) 1052 return (1); 1053 1054 *pgc->pgc_soff += sizeof (shdr); 1055 #endif /* _LP64 */ 1056 } 1057 1058 *pgc->pgc_doff += roundup(size, 8); 1059 1060 return (0); 1061 } 1062 1063 /* 1064 * Don't explicity stop the process; that's up to the consumer. 1065 */ 1066 int 1067 Pfgcore(struct ps_prochandle *P, int fd, core_content_t content) 1068 { 1069 char plat[SYS_NMLN]; 1070 char zonename[ZONENAME_MAX]; 1071 int platlen = -1; 1072 pgcore_t pgc; 1073 off64_t poff, soff, doff, boff; 1074 struct utsname uts; 1075 uint_t nphdrs, nshdrs; 1076 1077 if (ftruncate64(fd, 0) != 0) 1078 return (-1); 1079 1080 if (content == CC_CONTENT_INVALID) { 1081 errno = EINVAL; 1082 return (-1); 1083 } 1084 1085 /* 1086 * Cache the mappings and other useful data. 1087 */ 1088 (void) Prd_agent(P); 1089 (void) Ppsinfo(P); 1090 1091 pgc.P = P; 1092 pgc.pgc_fd = fd; 1093 pgc.pgc_poff = &poff; 1094 pgc.pgc_soff = &soff; 1095 pgc.pgc_doff = &doff; 1096 pgc.pgc_content = content; 1097 pgc.pgc_chunksz = PAGESIZE; 1098 if ((pgc.pgc_chunk = malloc(pgc.pgc_chunksz)) == NULL) 1099 return (-1); 1100 1101 shstrtab_init(&pgc.pgc_shstrtab); 1102 1103 /* 1104 * There are two PT_NOTE program headers for ancillary data, and 1105 * one for each mapping. 1106 */ 1107 nphdrs = 2 + P->map_count; 1108 nshdrs = count_sections(&pgc); 1109 1110 (void) Pplatform(P, plat, sizeof (plat)); 1111 platlen = strlen(plat) + 1; 1112 Preadauxvec(P); 1113 (void) Puname(P, &uts); 1114 if (Pzonename(P, zonename, sizeof (zonename)) == NULL) 1115 zonename[0] = '\0'; 1116 1117 /* 1118 * The core file contents may required zero section headers, but if we 1119 * overflow the 16 bits allotted to the program header count in the ELF 1120 * header, we'll need that program header at index zero. 1121 */ 1122 if (nshdrs == 0 && nphdrs >= PN_XNUM) 1123 nshdrs = 1; 1124 1125 /* 1126 * Set up the ELF header. 1127 */ 1128 if (P->status.pr_dmodel == PR_MODEL_ILP32) { 1129 Elf32_Ehdr ehdr; 1130 1131 bzero(&ehdr, sizeof (ehdr)); 1132 ehdr.e_ident[EI_MAG0] = ELFMAG0; 1133 ehdr.e_ident[EI_MAG1] = ELFMAG1; 1134 ehdr.e_ident[EI_MAG2] = ELFMAG2; 1135 ehdr.e_ident[EI_MAG3] = ELFMAG3; 1136 ehdr.e_type = ET_CORE; 1137 1138 ehdr.e_ident[EI_CLASS] = ELFCLASS32; 1139 #if defined(__sparc) 1140 ehdr.e_machine = EM_SPARC; 1141 ehdr.e_ident[EI_DATA] = ELFDATA2MSB; 1142 #elif defined(__i386) || defined(__amd64) 1143 ehdr.e_machine = EM_386; 1144 ehdr.e_ident[EI_DATA] = ELFDATA2LSB; 1145 #else 1146 #error "unknown machine type" 1147 #endif 1148 ehdr.e_ident[EI_VERSION] = EV_CURRENT; 1149 1150 ehdr.e_version = EV_CURRENT; 1151 ehdr.e_ehsize = sizeof (ehdr); 1152 1153 if (nphdrs >= PN_XNUM) 1154 ehdr.e_phnum = PN_XNUM; 1155 else 1156 ehdr.e_phnum = (unsigned short)nphdrs; 1157 1158 ehdr.e_phentsize = sizeof (Elf32_Phdr); 1159 ehdr.e_phoff = ehdr.e_ehsize; 1160 1161 if (nshdrs > 0) { 1162 if (nshdrs >= SHN_LORESERVE) 1163 ehdr.e_shnum = 0; 1164 else 1165 ehdr.e_shnum = (unsigned short)nshdrs; 1166 1167 if (nshdrs - 1 >= SHN_LORESERVE) 1168 ehdr.e_shstrndx = SHN_XINDEX; 1169 else 1170 ehdr.e_shstrndx = (unsigned short)(nshdrs - 1); 1171 1172 ehdr.e_shentsize = sizeof (Elf32_Shdr); 1173 ehdr.e_shoff = ehdr.e_phoff + ehdr.e_phentsize * nphdrs; 1174 } 1175 1176 if (gc_pwrite64(fd, &ehdr, sizeof (ehdr), 0) != 0) 1177 goto err; 1178 1179 poff = ehdr.e_phoff; 1180 soff = ehdr.e_shoff; 1181 doff = boff = ehdr.e_ehsize + 1182 ehdr.e_phentsize * nphdrs + 1183 ehdr.e_shentsize * nshdrs; 1184 1185 #ifdef _LP64 1186 } else { 1187 Elf64_Ehdr ehdr; 1188 1189 bzero(&ehdr, sizeof (ehdr)); 1190 ehdr.e_ident[EI_MAG0] = ELFMAG0; 1191 ehdr.e_ident[EI_MAG1] = ELFMAG1; 1192 ehdr.e_ident[EI_MAG2] = ELFMAG2; 1193 ehdr.e_ident[EI_MAG3] = ELFMAG3; 1194 ehdr.e_type = ET_CORE; 1195 1196 ehdr.e_ident[EI_CLASS] = ELFCLASS64; 1197 #if defined(__sparc) 1198 ehdr.e_machine = EM_SPARCV9; 1199 ehdr.e_ident[EI_DATA] = ELFDATA2MSB; 1200 #elif defined(__i386) || defined(__amd64) 1201 ehdr.e_machine = EM_AMD64; 1202 ehdr.e_ident[EI_DATA] = ELFDATA2LSB; 1203 #else 1204 #error "unknown machine type" 1205 #endif 1206 ehdr.e_ident[EI_VERSION] = EV_CURRENT; 1207 1208 ehdr.e_version = EV_CURRENT; 1209 ehdr.e_ehsize = sizeof (ehdr); 1210 1211 if (nphdrs >= PN_XNUM) 1212 ehdr.e_phnum = PN_XNUM; 1213 else 1214 ehdr.e_phnum = (unsigned short)nphdrs; 1215 1216 ehdr.e_phentsize = sizeof (Elf64_Phdr); 1217 ehdr.e_phoff = ehdr.e_ehsize; 1218 1219 if (nshdrs > 0) { 1220 if (nshdrs >= SHN_LORESERVE) 1221 ehdr.e_shnum = 0; 1222 else 1223 ehdr.e_shnum = (unsigned short)nshdrs; 1224 1225 if (nshdrs - 1 >= SHN_LORESERVE) 1226 ehdr.e_shstrndx = SHN_XINDEX; 1227 else 1228 ehdr.e_shstrndx = (unsigned short)(nshdrs - 1); 1229 1230 ehdr.e_shentsize = sizeof (Elf64_Shdr); 1231 ehdr.e_shoff = ehdr.e_phoff + ehdr.e_phentsize * nphdrs; 1232 } 1233 1234 if (gc_pwrite64(fd, &ehdr, sizeof (ehdr), 0) != 0) 1235 goto err; 1236 1237 poff = ehdr.e_phoff; 1238 soff = ehdr.e_shoff; 1239 doff = boff = ehdr.e_ehsize + 1240 ehdr.e_phentsize * nphdrs + 1241 ehdr.e_shentsize * nshdrs; 1242 1243 #endif /* _LP64 */ 1244 } 1245 1246 /* 1247 * Write the zero indexed section if it exists. 1248 */ 1249 if (nshdrs > 0 && write_shdr(&pgc, STR_NONE, 0, 0, 0, 0, 1250 nshdrs >= SHN_LORESERVE ? nshdrs : 0, 1251 nshdrs - 1 >= SHN_LORESERVE ? nshdrs - 1 : 0, 1252 nphdrs >= PN_XNUM ? nphdrs : 0, 0, 0) != 0) 1253 goto err; 1254 1255 /* 1256 * Construct the old-style note header and section. 1257 */ 1258 1259 if (P->status.pr_dmodel == PR_MODEL_NATIVE) { 1260 prpsinfo_t prpsinfo; 1261 1262 mkprpsinfo(P, &prpsinfo); 1263 if (write_note(fd, NT_PRPSINFO, &prpsinfo, sizeof (prpsinfo_t), 1264 &doff) != 0) { 1265 goto err; 1266 } 1267 if (write_note(fd, NT_AUXV, P->auxv, 1268 P->nauxv * sizeof (P->auxv[0]), &doff) != 0) { 1269 goto err; 1270 } 1271 #ifdef _LP64 1272 } else { 1273 prpsinfo32_t pi32; 1274 auxv32_t *av32; 1275 size_t size = sizeof (auxv32_t) * P->nauxv; 1276 int i; 1277 1278 mkprpsinfo32(P, &pi32); 1279 if (write_note(fd, NT_PRPSINFO, &pi32, sizeof (prpsinfo32_t), 1280 &doff) != 0) { 1281 goto err; 1282 } 1283 1284 if ((av32 = malloc(size)) == NULL) 1285 goto err; 1286 1287 for (i = 0; i < P->nauxv; i++) { 1288 auxv_n_to_32(&P->auxv[i], &av32[i]); 1289 } 1290 1291 if (write_note(fd, NT_AUXV, av32, size, &doff) != 0) { 1292 free(av32); 1293 goto err; 1294 } 1295 1296 free(av32); 1297 #endif /* _LP64 */ 1298 } 1299 1300 if (write_note(fd, NT_PLATFORM, plat, platlen, &doff) != 0) 1301 goto err; 1302 1303 if (Plwp_iter_all(P, old_per_lwp, &pgc) != 0) 1304 goto err; 1305 1306 if (P->status.pr_dmodel == PR_MODEL_ILP32) { 1307 Elf32_Phdr phdr; 1308 1309 bzero(&phdr, sizeof (phdr)); 1310 phdr.p_type = PT_NOTE; 1311 phdr.p_flags = PF_R; 1312 phdr.p_offset = (Elf32_Off)boff; 1313 phdr.p_filesz = doff - boff; 1314 boff = doff; 1315 1316 if (gc_pwrite64(fd, &phdr, sizeof (phdr), poff) != 0) 1317 goto err; 1318 poff += sizeof (phdr); 1319 #ifdef _LP64 1320 } else { 1321 Elf64_Phdr phdr; 1322 1323 bzero(&phdr, sizeof (phdr)); 1324 phdr.p_type = PT_NOTE; 1325 phdr.p_flags = PF_R; 1326 phdr.p_offset = boff; 1327 phdr.p_filesz = doff - boff; 1328 boff = doff; 1329 1330 if (gc_pwrite64(fd, &phdr, sizeof (phdr), poff) != 0) 1331 goto err; 1332 poff += sizeof (phdr); 1333 #endif /* _LP64 */ 1334 } 1335 1336 /* 1337 * Construct the new-style note header and section. 1338 */ 1339 1340 if (P->status.pr_dmodel == PR_MODEL_NATIVE) { 1341 if (write_note(fd, NT_PSINFO, &P->psinfo, sizeof (psinfo_t), 1342 &doff) != 0) { 1343 goto err; 1344 } 1345 if (write_note(fd, NT_PSTATUS, &P->status, sizeof (pstatus_t), 1346 &doff) != 0) { 1347 goto err; 1348 } 1349 if (write_note(fd, NT_AUXV, P->auxv, 1350 P->nauxv * sizeof (P->auxv[0]), &doff) != 0) { 1351 goto err; 1352 } 1353 #ifdef _LP64 1354 } else { 1355 psinfo32_t pi32; 1356 pstatus32_t ps32; 1357 auxv32_t *av32; 1358 size_t size = sizeof (auxv32_t) * P->nauxv; 1359 int i; 1360 1361 psinfo_n_to_32(&P->psinfo, &pi32); 1362 if (write_note(fd, NT_PSINFO, &pi32, sizeof (psinfo32_t), 1363 &doff) != 0) { 1364 goto err; 1365 } 1366 pstatus_n_to_32(&P->status, &ps32); 1367 if (write_note(fd, NT_PSTATUS, &ps32, sizeof (pstatus32_t), 1368 &doff) != 0) { 1369 goto err; 1370 } 1371 if ((av32 = malloc(size)) == NULL) 1372 goto err; 1373 1374 for (i = 0; i < P->nauxv; i++) { 1375 auxv_n_to_32(&P->auxv[i], &av32[i]); 1376 } 1377 1378 if (write_note(fd, NT_AUXV, av32, size, &doff) != 0) { 1379 free(av32); 1380 goto err; 1381 } 1382 1383 free(av32); 1384 #endif /* _LP64 */ 1385 } 1386 1387 if (write_note(fd, NT_PLATFORM, plat, platlen, &doff) != 0 || 1388 write_note(fd, NT_UTSNAME, &uts, sizeof (uts), &doff) != 0 || 1389 write_note(fd, NT_CONTENT, &content, sizeof (content), &doff) != 0) 1390 goto err; 1391 1392 { 1393 prcred_t cred, *cp; 1394 size_t size = sizeof (prcred_t); 1395 1396 if (Pcred(P, &cred, 0) != 0) 1397 goto err; 1398 1399 if (cred.pr_ngroups > 0) 1400 size += sizeof (gid_t) * (cred.pr_ngroups - 1); 1401 if ((cp = malloc(size)) == NULL) 1402 goto err; 1403 1404 if (Pcred(P, cp, cred.pr_ngroups) != 0 || 1405 write_note(fd, NT_PRCRED, cp, size, &doff) != 0) { 1406 free(cp); 1407 goto err; 1408 } 1409 1410 free(cp); 1411 } 1412 1413 { 1414 prpriv_t *ppriv = NULL; 1415 const priv_impl_info_t *pinfo; 1416 size_t pprivsz, pinfosz; 1417 1418 if (Ppriv(P, &ppriv) == -1) 1419 goto err; 1420 pprivsz = PRIV_PRPRIV_SIZE(ppriv); 1421 1422 if (write_note(fd, NT_PRPRIV, ppriv, pprivsz, &doff) != 0) { 1423 Ppriv_free(P, ppriv); 1424 goto err; 1425 } 1426 Ppriv_free(P, ppriv); 1427 1428 if ((pinfo = getprivimplinfo()) == NULL) 1429 goto err; 1430 pinfosz = PRIV_IMPL_INFO_SIZE(pinfo); 1431 1432 if (write_note(fd, NT_PRPRIVINFO, pinfo, pinfosz, &doff) != 0) 1433 goto err; 1434 } 1435 1436 if (write_note(fd, NT_ZONENAME, zonename, strlen(zonename) + 1, 1437 &doff) != 0) 1438 goto err; 1439 1440 { 1441 fditer_t iter; 1442 iter.fd_fd = fd; 1443 iter.fd_doff = &doff; 1444 1445 if (Pfdinfo_iter(P, iter_fd, &iter) != 0) 1446 goto err; 1447 } 1448 1449 1450 { 1451 prsecflags_t *psf = NULL; 1452 1453 if (Psecflags(P, &psf) != 0) 1454 goto err; 1455 1456 if (write_note(fd, NT_SECFLAGS, psf, 1457 sizeof (prsecflags_t), &doff) != 0) { 1458 Psecflags_free(psf); 1459 goto err; 1460 } 1461 1462 Psecflags_free(psf); 1463 } 1464 1465 #if defined(__i386) || defined(__amd64) 1466 /* CSTYLED */ 1467 { 1468 struct ssd *ldtp; 1469 size_t size; 1470 int nldt; 1471 1472 /* 1473 * Only dump out non-zero sized LDT notes. 1474 */ 1475 if ((nldt = Pldt(P, NULL, 0)) != 0) { 1476 size = sizeof (struct ssd) * nldt; 1477 if ((ldtp = malloc(size)) == NULL) 1478 goto err; 1479 1480 if (Pldt(P, ldtp, nldt) == -1 || 1481 write_note(fd, NT_LDT, ldtp, size, &doff) != 0) { 1482 free(ldtp); 1483 goto err; 1484 } 1485 1486 free(ldtp); 1487 } 1488 } 1489 #endif /* __i386 || __amd64 */ 1490 1491 if (Plwp_iter_all(P, new_per_lwp, &pgc) != 0) 1492 goto err; 1493 1494 if (P->status.pr_dmodel == PR_MODEL_ILP32) { 1495 Elf32_Phdr phdr; 1496 1497 bzero(&phdr, sizeof (phdr)); 1498 phdr.p_type = PT_NOTE; 1499 phdr.p_flags = PF_R; 1500 phdr.p_offset = (Elf32_Off)boff; 1501 phdr.p_filesz = doff - boff; 1502 boff = doff; 1503 1504 if (gc_pwrite64(fd, &phdr, sizeof (phdr), poff) != 0) 1505 goto err; 1506 poff += sizeof (phdr); 1507 #ifdef _LP64 1508 } else { 1509 Elf64_Phdr phdr; 1510 1511 bzero(&phdr, sizeof (phdr)); 1512 phdr.p_type = PT_NOTE; 1513 phdr.p_flags = PF_R; 1514 phdr.p_offset = boff; 1515 phdr.p_filesz = doff - boff; 1516 boff = doff; 1517 1518 if (gc_pwrite64(fd, &phdr, sizeof (phdr), poff) != 0) 1519 goto err; 1520 poff += sizeof (phdr); 1521 #endif /* _LP64 */ 1522 } 1523 1524 /* 1525 * Construct the headers for each mapping and write out its data 1526 * if the content parameter indicates that it should be present 1527 * in the core file. 1528 */ 1529 if (Pmapping_iter(P, dump_map, &pgc) != 0) 1530 goto err; 1531 1532 if (dump_sections(&pgc) != 0) 1533 goto err; 1534 1535 if (write_shstrtab(P, &pgc) != 0) 1536 goto err; 1537 1538 free(pgc.pgc_chunk); 1539 1540 return (0); 1541 1542 err: 1543 /* 1544 * Wipe out anything we may have written if there was an error. 1545 */ 1546 (void) ftruncate64(fd, 0); 1547 free(pgc.pgc_chunk); 1548 1549 return (-1); 1550 } 1551 1552 static const char *content_str[] = { 1553 "stack", /* CC_CONTENT_STACK */ 1554 "heap", /* CC_CONTENT_HEAP */ 1555 "shfile", /* CC_CONTENT_SHFILE */ 1556 "shanon", /* CC_CONTENT_SHANON */ 1557 "text", /* CC_CONTENT_TEXT */ 1558 "data", /* CC_CONTENT_DATA */ 1559 "rodata", /* CC_CONTENT_RODATA */ 1560 "anon", /* CC_CONTENT_ANON */ 1561 "shm", /* CC_CONTENT_SHM */ 1562 "ism", /* CC_CONTENT_ISM */ 1563 "dism", /* CC_CONTENT_DISM */ 1564 "ctf", /* CC_CONTENT_CTF */ 1565 "symtab", /* CC_CONTENT_SYMTAB */ 1566 }; 1567 1568 static uint_t ncontent_str = sizeof (content_str) / sizeof (content_str[0]); 1569 1570 #define STREQ(a, b, n) (strlen(b) == (n) && strncmp(a, b, n) == 0) 1571 1572 int 1573 proc_str2content(const char *str, core_content_t *cp) 1574 { 1575 const char *cur = str; 1576 int add = 1; 1577 core_content_t mask, content = 0; 1578 1579 for (;;) { 1580 for (cur = str; isalpha(*cur); cur++) 1581 continue; 1582 1583 if (STREQ(str, "default", cur - str)) { 1584 mask = CC_CONTENT_DEFAULT; 1585 } else if (STREQ(str, "all", cur - str)) { 1586 mask = CC_CONTENT_ALL; 1587 } else if (STREQ(str, "none", cur - str)) { 1588 mask = 0; 1589 } else { 1590 int i = 0; 1591 1592 while (!STREQ(str, content_str[i], cur - str)) { 1593 i++; 1594 1595 if (i >= ncontent_str) 1596 return (-1); 1597 } 1598 1599 mask = (core_content_t)1 << i; 1600 } 1601 1602 if (add) 1603 content |= mask; 1604 else 1605 content &= ~mask; 1606 1607 switch (*cur) { 1608 case '\0': 1609 *cp = content; 1610 return (0); 1611 case '+': 1612 add = 1; 1613 break; 1614 case '-': 1615 add = 0; 1616 break; 1617 default: 1618 return (-1); 1619 } 1620 1621 str = cur + 1; 1622 } 1623 } 1624 1625 static int 1626 popc(core_content_t x) 1627 { 1628 int i; 1629 1630 for (i = 0; x != 0; i++) 1631 x &= x - 1; 1632 1633 return (i); 1634 } 1635 1636 int 1637 proc_content2str(core_content_t content, char *buf, size_t size) 1638 { 1639 int nonecnt, defcnt, allcnt; 1640 core_content_t mask, bit; 1641 int first; 1642 uint_t index; 1643 size_t n, tot = 0; 1644 1645 if (content == 0) 1646 return ((int)strlcpy(buf, "none", size)); 1647 1648 if (content & ~CC_CONTENT_ALL) 1649 return ((int)strlcpy(buf, "<invalid>", size)); 1650 1651 nonecnt = popc(content); 1652 defcnt = 1 + popc(content ^ CC_CONTENT_DEFAULT); 1653 allcnt = 1 + popc(content ^ CC_CONTENT_ALL); 1654 1655 if (defcnt <= nonecnt && defcnt <= allcnt) { 1656 mask = content ^ CC_CONTENT_DEFAULT; 1657 first = 0; 1658 tot += (n = strlcpy(buf, "default", size)); 1659 if (n > size) 1660 n = size; 1661 buf += n; 1662 size -= n; 1663 } else if (allcnt < nonecnt) { 1664 mask = content ^ CC_CONTENT_ALL; 1665 first = 0; 1666 tot += (n = strlcpy(buf, "all", size)); 1667 if (n > size) 1668 n = size; 1669 buf += n; 1670 size -= n; 1671 } else { 1672 mask = content; 1673 first = 1; 1674 } 1675 1676 while (mask != 0) { 1677 bit = mask ^ (mask & (mask - 1)); 1678 1679 if (!first) { 1680 if (size > 1) { 1681 *buf = (bit & content) ? '+' : '-'; 1682 buf++; 1683 size--; 1684 } 1685 1686 tot++; 1687 } 1688 index = popc(bit - 1); 1689 tot += (n = strlcpy(buf, content_str[index], size)); 1690 if (n > size) 1691 n = size; 1692 buf += n; 1693 size -= n; 1694 1695 mask ^= bit; 1696 first = 0; 1697 } 1698 1699 return ((int)tot); 1700 } 1701