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 2015 Joyent, Inc.
  29  * Copyright (c) 2013 by Delphix. All rights reserved.
  30  */
  31 
  32 #define _STRUCTURED_PROC        1
  33 
  34 #include <stdlib.h>
  35 #include <ctype.h>
  36 #include <string.h>
  37 #include <strings.h>
  38 #include <errno.h>
  39 #include <procfs.h>
  40 #include <priv.h>
  41 #include <sys/elf.h>
  42 #include <sys/machelf.h>
  43 #include <sys/sysmacros.h>
  44 #include <sys/systeminfo.h>
  45 #include <sys/proc.h>
  46 #include <sys/utsname.h>
  47 
  48 #include <sys/old_procfs.h>
  49 
  50 #include "Pcontrol.h"
  51 #include "P32ton.h"
  52 
  53 typedef enum {
  54         STR_NONE,
  55         STR_CTF,
  56         STR_SYMTAB,
  57         STR_DYNSYM,
  58         STR_STRTAB,
  59         STR_DYNSTR,
  60         STR_SHSTRTAB,
  61         STR_NUM
  62 } shstrtype_t;
  63 
  64 static const char *shstrtab_data[] = {
  65         "",
  66         ".SUNW_ctf",
  67         ".symtab",
  68         ".dynsym",
  69         ".strtab",
  70         ".dynstr",
  71         ".shstrtab"
  72 };
  73 
  74 typedef struct shstrtab {
  75         int     sst_ndx[STR_NUM];
  76         int     sst_cur;
  77 } shstrtab_t;
  78 
  79 typedef struct {
  80         struct ps_prochandle *P;
  81         int             pgc_fd;
  82         off64_t         *pgc_poff;
  83         off64_t         *pgc_soff;
  84         off64_t         *pgc_doff;
  85         core_content_t  pgc_content;
  86         void            *pgc_chunk;
  87         size_t          pgc_chunksz;
  88 
  89         shstrtab_t      pgc_shstrtab;
  90 } pgcore_t;
  91 
  92 typedef struct {
  93         int             fd_fd;
  94         off64_t         *fd_doff;
  95 } fditer_t;
  96 
  97 static int
  98 gc_pwrite64(int fd, const void *buf, size_t len, off64_t off)
  99 {
 100         int err;
 101 
 102         err = pwrite64(fd, buf, len, off);
 103 
 104         if (err < 0)
 105                 return (err);
 106 
 107         /*
 108          * We will take a page from ZFS's book here and use the otherwise
 109          * unused EBADE to mean a short write.  Typically this will actually
 110          * result from ENOSPC or EDQUOT, but we can't be sure.
 111          */
 112         if (err < len) {
 113                 errno = EBADE;
 114                 return (-1);
 115         }
 116 
 117         return (0);
 118 }
 119 
 120 static void
 121 shstrtab_init(shstrtab_t *s)
 122 {
 123         bzero(&s->sst_ndx, sizeof (s->sst_ndx));
 124         s->sst_cur = 1;
 125 }
 126 
 127 static int
 128 shstrtab_ndx(shstrtab_t *s, shstrtype_t type)
 129 {
 130         int ret;
 131 
 132         if ((ret = s->sst_ndx[type]) != 0 || type == STR_NONE)
 133                 return (ret);
 134 
 135         ret = s->sst_ndx[type] = s->sst_cur;
 136         s->sst_cur += strlen(shstrtab_data[type]) + 1;
 137 
 138         return (ret);
 139 }
 140 
 141 static size_t
 142 shstrtab_size(const shstrtab_t *s)
 143 {
 144         return (s->sst_cur);
 145 }
 146 
 147 int
 148 Pgcore(struct ps_prochandle *P, const char *fname, core_content_t content)
 149 {
 150         int fd;
 151         int err;
 152         int saved_errno;
 153 
 154         if ((fd = creat64(fname, 0666)) < 0)
 155                 return (-1);
 156 
 157         if ((err = Pfgcore(P, fd, content)) != 0) {
 158                 saved_errno = errno;
 159                 (void) close(fd);
 160                 (void) unlink(fname);
 161                 errno = saved_errno;
 162                 return (err);
 163         }
 164 
 165         return (close(fd));
 166 }
 167 
 168 /*
 169  * Since we don't want to use the old-school procfs interfaces, we use the
 170  * new-style data structures we already have to construct the old-style
 171  * data structures. We include these data structures in core files for
 172  * backward compatability.
 173  */
 174 
 175 static void
 176 mkprstatus(struct ps_prochandle *P, const lwpstatus_t *lsp,
 177     const lwpsinfo_t *lip, prstatus_t *psp)
 178 {
 179         bzero(psp, sizeof (*psp));
 180 
 181         if (lsp->pr_flags & PR_STOPPED)
 182                 psp->pr_flags = 0x0001;
 183         if (lsp->pr_flags & PR_ISTOP)
 184                 psp->pr_flags = 0x0002;
 185         if (lsp->pr_flags & PR_DSTOP)
 186                 psp->pr_flags = 0x0004;
 187         if (lsp->pr_flags & PR_ASLEEP)
 188                 psp->pr_flags = 0x0008;
 189         if (lsp->pr_flags & PR_FORK)
 190                 psp->pr_flags = 0x0010;
 191         if (lsp->pr_flags & PR_RLC)
 192                 psp->pr_flags = 0x0020;
 193         /*
 194          * Note that PR_PTRACE (0x0040) from <sys/old_procfs.h> is never set;
 195          * PR_PCOMPAT corresponds to PR_PTRACE in the newer <sys/procfs.h>.
 196          */
 197         if (lsp->pr_flags & PR_PCINVAL)
 198                 psp->pr_flags = 0x0080;
 199         if (lsp->pr_flags & PR_ISSYS)
 200                 psp->pr_flags = 0x0100;
 201         if (lsp->pr_flags & PR_STEP)
 202                 psp->pr_flags = 0x0200;
 203         if (lsp->pr_flags & PR_KLC)
 204                 psp->pr_flags = 0x0400;
 205         if (lsp->pr_flags & PR_ASYNC)
 206                 psp->pr_flags = 0x0800;
 207         if (lsp->pr_flags & PR_PTRACE)
 208                 psp->pr_flags = 0x1000;
 209         if (lsp->pr_flags & PR_MSACCT)
 210                 psp->pr_flags = 0x2000;
 211         if (lsp->pr_flags & PR_BPTADJ)
 212                 psp->pr_flags = 0x4000;
 213         if (lsp->pr_flags & PR_ASLWP)
 214                 psp->pr_flags = 0x8000;
 215 
 216         psp->pr_why = lsp->pr_why;
 217         psp->pr_what = lsp->pr_what;
 218         psp->pr_info = lsp->pr_info;
 219         psp->pr_cursig = lsp->pr_cursig;
 220         psp->pr_nlwp = P->status.pr_nlwp;
 221         psp->pr_sigpend = P->status.pr_sigpend;
 222         psp->pr_sighold = lsp->pr_lwphold;
 223         psp->pr_altstack = lsp->pr_altstack;
 224         psp->pr_action = lsp->pr_action;
 225         psp->pr_pid = P->status.pr_pid;
 226         psp->pr_ppid = P->status.pr_ppid;
 227         psp->pr_pgrp = P->status.pr_pgid;
 228         psp->pr_sid = P->status.pr_sid;
 229         psp->pr_utime = P->status.pr_utime;
 230         psp->pr_stime = P->status.pr_stime;
 231         psp->pr_cutime = P->status.pr_cutime;
 232         psp->pr_cstime = P->status.pr_cstime;
 233         (void) strncpy(psp->pr_clname, lsp->pr_clname, sizeof (psp->pr_clname));
 234         psp->pr_syscall = lsp->pr_syscall;
 235         psp->pr_nsysarg = lsp->pr_nsysarg;
 236         bcopy(lsp->pr_sysarg, psp->pr_sysarg, sizeof (psp->pr_sysarg));
 237         psp->pr_who = lsp->pr_lwpid;
 238         psp->pr_lwppend = lsp->pr_lwppend;
 239         psp->pr_oldcontext = (ucontext_t *)lsp->pr_oldcontext;
 240         psp->pr_brkbase = (caddr_t)P->status.pr_brkbase;
 241         psp->pr_brksize = P->status.pr_brksize;
 242         psp->pr_stkbase = (caddr_t)P->status.pr_stkbase;
 243         psp->pr_stksize = P->status.pr_stksize;
 244         psp->pr_processor = (short)lip->pr_onpro;
 245         psp->pr_bind = (short)lip->pr_bindpro;
 246         psp->pr_instr = lsp->pr_instr;
 247         bcopy(lsp->pr_reg, psp->pr_reg, sizeof (psp->pr_sysarg));
 248 }
 249 
 250 static void
 251 mkprpsinfo(struct ps_prochandle *P, prpsinfo_t *psp)
 252 {
 253         bzero(psp, sizeof (*psp));
 254         psp->pr_state = P->psinfo.pr_lwp.pr_state;
 255         psp->pr_sname = P->psinfo.pr_lwp.pr_sname;
 256         psp->pr_zomb = (psp->pr_state == SZOMB);
 257         psp->pr_nice = P->psinfo.pr_lwp.pr_nice;
 258         psp->pr_flag = P->psinfo.pr_lwp.pr_flag;
 259         psp->pr_uid = P->psinfo.pr_uid;
 260         psp->pr_gid = P->psinfo.pr_gid;
 261         psp->pr_pid = P->psinfo.pr_pid;
 262         psp->pr_ppid = P->psinfo.pr_ppid;
 263         psp->pr_pgrp = P->psinfo.pr_pgid;
 264         psp->pr_sid = P->psinfo.pr_sid;
 265         psp->pr_addr = (caddr_t)P->psinfo.pr_addr;
 266         psp->pr_size = P->psinfo.pr_size;
 267         psp->pr_rssize = P->psinfo.pr_rssize;
 268         psp->pr_wchan = (caddr_t)P->psinfo.pr_lwp.pr_wchan;
 269         psp->pr_start = P->psinfo.pr_start;
 270         psp->pr_time = P->psinfo.pr_time;
 271         psp->pr_pri = P->psinfo.pr_lwp.pr_pri;
 272         psp->pr_oldpri = P->psinfo.pr_lwp.pr_oldpri;
 273         psp->pr_cpu = P->psinfo.pr_lwp.pr_cpu;
 274         psp->pr_ottydev = cmpdev(P->psinfo.pr_ttydev);
 275         psp->pr_lttydev = P->psinfo.pr_ttydev;
 276         (void) strncpy(psp->pr_clname, P->psinfo.pr_lwp.pr_clname,
 277             sizeof (psp->pr_clname));
 278         (void) strncpy(psp->pr_fname, P->psinfo.pr_fname,
 279             sizeof (psp->pr_fname));
 280         bcopy(&P->psinfo.pr_psargs, &psp->pr_psargs,
 281             sizeof (psp->pr_psargs));
 282         psp->pr_syscall = P->psinfo.pr_lwp.pr_syscall;
 283         psp->pr_ctime = P->psinfo.pr_ctime;
 284         psp->pr_bysize = psp->pr_size * PAGESIZE;
 285         psp->pr_byrssize = psp->pr_rssize * PAGESIZE;
 286         psp->pr_argc = P->psinfo.pr_argc;
 287         psp->pr_argv = (char **)P->psinfo.pr_argv;
 288         psp->pr_envp = (char **)P->psinfo.pr_envp;
 289         psp->pr_wstat = P->psinfo.pr_wstat;
 290         psp->pr_pctcpu = P->psinfo.pr_pctcpu;
 291         psp->pr_pctmem = P->psinfo.pr_pctmem;
 292         psp->pr_euid = P->psinfo.pr_euid;
 293         psp->pr_egid = P->psinfo.pr_egid;
 294         psp->pr_aslwpid = 0;
 295         psp->pr_dmodel = P->psinfo.pr_dmodel;
 296 }
 297 
 298 #ifdef _LP64
 299 
 300 static void
 301 mkprstatus32(struct ps_prochandle *P, const lwpstatus_t *lsp,
 302     const lwpsinfo_t *lip, prstatus32_t *psp)
 303 {
 304         bzero(psp, sizeof (*psp));
 305 
 306         if (lsp->pr_flags & PR_STOPPED)
 307                 psp->pr_flags = 0x0001;
 308         if (lsp->pr_flags & PR_ISTOP)
 309                 psp->pr_flags = 0x0002;
 310         if (lsp->pr_flags & PR_DSTOP)
 311                 psp->pr_flags = 0x0004;
 312         if (lsp->pr_flags & PR_ASLEEP)
 313                 psp->pr_flags = 0x0008;
 314         if (lsp->pr_flags & PR_FORK)
 315                 psp->pr_flags = 0x0010;
 316         if (lsp->pr_flags & PR_RLC)
 317                 psp->pr_flags = 0x0020;
 318         /*
 319          * Note that PR_PTRACE (0x0040) from <sys/old_procfs.h> is never set;
 320          * PR_PCOMPAT corresponds to PR_PTRACE in the newer <sys/procfs.h>.
 321          */
 322         if (lsp->pr_flags & PR_PCINVAL)
 323                 psp->pr_flags = 0x0080;
 324         if (lsp->pr_flags & PR_ISSYS)
 325                 psp->pr_flags = 0x0100;
 326         if (lsp->pr_flags & PR_STEP)
 327                 psp->pr_flags = 0x0200;
 328         if (lsp->pr_flags & PR_KLC)
 329                 psp->pr_flags = 0x0400;
 330         if (lsp->pr_flags & PR_ASYNC)
 331                 psp->pr_flags = 0x0800;
 332         if (lsp->pr_flags & PR_PTRACE)
 333                 psp->pr_flags = 0x1000;
 334         if (lsp->pr_flags & PR_MSACCT)
 335                 psp->pr_flags = 0x2000;
 336         if (lsp->pr_flags & PR_BPTADJ)
 337                 psp->pr_flags = 0x4000;
 338         if (lsp->pr_flags & PR_ASLWP)
 339                 psp->pr_flags = 0x8000;
 340 
 341         psp->pr_why = lsp->pr_why;
 342         psp->pr_what = lsp->pr_what;
 343         siginfo_n_to_32(&lsp->pr_info, &psp->pr_info);
 344         psp->pr_cursig = lsp->pr_cursig;
 345         psp->pr_nlwp = P->status.pr_nlwp;
 346         psp->pr_sigpend = P->status.pr_sigpend;
 347         psp->pr_sighold = lsp->pr_lwphold;
 348         stack_n_to_32(&lsp->pr_altstack, &psp->pr_altstack);
 349         sigaction_n_to_32(&lsp->pr_action, &psp->pr_action);
 350         psp->pr_pid = P->status.pr_pid;
 351         psp->pr_ppid = P->status.pr_ppid;
 352         psp->pr_pgrp = P->status.pr_pgid;
 353         psp->pr_sid = P->status.pr_sid;
 354         timestruc_n_to_32(&P->status.pr_utime, &psp->pr_utime);
 355         timestruc_n_to_32(&P->status.pr_stime, &psp->pr_stime);
 356         timestruc_n_to_32(&P->status.pr_cutime, &psp->pr_cutime);
 357         timestruc_n_to_32(&P->status.pr_cstime, &psp->pr_cstime);
 358         (void) strncpy(psp->pr_clname, lsp->pr_clname, sizeof (psp->pr_clname));
 359         psp->pr_syscall = lsp->pr_syscall;
 360         psp->pr_nsysarg = lsp->pr_nsysarg;
 361         bcopy(lsp->pr_sysarg, psp->pr_sysarg, sizeof (psp->pr_sysarg));
 362         psp->pr_who = lsp->pr_lwpid;
 363         psp->pr_lwppend = lsp->pr_lwppend;
 364         psp->pr_oldcontext = (caddr32_t)lsp->pr_oldcontext;
 365         psp->pr_brkbase = (caddr32_t)P->status.pr_brkbase;
 366         psp->pr_brksize = P->status.pr_brksize;
 367         psp->pr_stkbase = (caddr32_t)P->status.pr_stkbase;
 368         psp->pr_stksize = P->status.pr_stksize;
 369         psp->pr_processor = (short)lip->pr_onpro;
 370         psp->pr_bind = (short)lip->pr_bindpro;
 371         psp->pr_instr = lsp->pr_instr;
 372         bcopy(lsp->pr_reg, psp->pr_reg, sizeof (psp->pr_sysarg));
 373 }
 374 
 375 static void
 376 mkprpsinfo32(struct ps_prochandle *P, prpsinfo32_t *psp)
 377 {
 378         bzero(psp, sizeof (*psp));
 379         psp->pr_state = P->psinfo.pr_lwp.pr_state;
 380         psp->pr_sname = P->psinfo.pr_lwp.pr_sname;
 381         psp->pr_zomb = (psp->pr_state == SZOMB);
 382         psp->pr_nice = P->psinfo.pr_lwp.pr_nice;
 383         psp->pr_flag = P->psinfo.pr_lwp.pr_flag;
 384         psp->pr_uid = P->psinfo.pr_uid;
 385         psp->pr_gid = P->psinfo.pr_gid;
 386         psp->pr_pid = P->psinfo.pr_pid;
 387         psp->pr_ppid = P->psinfo.pr_ppid;
 388         psp->pr_pgrp = P->psinfo.pr_pgid;
 389         psp->pr_sid = P->psinfo.pr_sid;
 390         psp->pr_addr = (caddr32_t)P->psinfo.pr_addr;
 391         psp->pr_size = P->psinfo.pr_size;
 392         psp->pr_rssize = P->psinfo.pr_rssize;
 393         psp->pr_wchan = (caddr32_t)P->psinfo.pr_lwp.pr_wchan;
 394         timestruc_n_to_32(&P->psinfo.pr_start, &psp->pr_start);
 395         timestruc_n_to_32(&P->psinfo.pr_time, &psp->pr_time);
 396         psp->pr_pri = P->psinfo.pr_lwp.pr_pri;
 397         psp->pr_oldpri = P->psinfo.pr_lwp.pr_oldpri;
 398         psp->pr_cpu = P->psinfo.pr_lwp.pr_cpu;
 399         psp->pr_ottydev = cmpdev(P->psinfo.pr_ttydev);
 400         psp->pr_lttydev = prcmpldev(P->psinfo.pr_ttydev);
 401         (void) strncpy(psp->pr_clname, P->psinfo.pr_lwp.pr_clname,
 402             sizeof (psp->pr_clname));
 403         (void) strncpy(psp->pr_fname, P->psinfo.pr_fname,
 404             sizeof (psp->pr_fname));
 405         bcopy(&P->psinfo.pr_psargs, &psp->pr_psargs,
 406             sizeof (psp->pr_psargs));
 407         psp->pr_syscall = P->psinfo.pr_lwp.pr_syscall;
 408         timestruc_n_to_32(&P->psinfo.pr_ctime, &psp->pr_ctime);
 409         psp->pr_bysize = psp->pr_size * PAGESIZE;
 410         psp->pr_byrssize = psp->pr_rssize * PAGESIZE;
 411         psp->pr_argc = P->psinfo.pr_argc;
 412         psp->pr_argv = (caddr32_t)P->psinfo.pr_argv;
 413         psp->pr_envp = (caddr32_t)P->psinfo.pr_envp;
 414         psp->pr_wstat = P->psinfo.pr_wstat;
 415         psp->pr_pctcpu = P->psinfo.pr_pctcpu;
 416         psp->pr_pctmem = P->psinfo.pr_pctmem;
 417         psp->pr_euid = P->psinfo.pr_euid;
 418         psp->pr_egid = P->psinfo.pr_egid;
 419         psp->pr_aslwpid = 0;
 420         psp->pr_dmodel = P->psinfo.pr_dmodel;
 421 }
 422 
 423 #endif  /* _LP64 */
 424 
 425 static int
 426 write_note(int fd, uint_t type, const void *desc, size_t descsz, off64_t *offp)
 427 {
 428         /*
 429          * Note headers are the same regardless of the data model of the
 430          * ELF file; we arbitrarily use Elf64_Nhdr here.
 431          */
 432         struct {
 433                 Elf64_Nhdr nhdr;
 434                 char name[8];
 435         } n;
 436 
 437         bzero(&n, sizeof (n));
 438         bcopy("CORE", n.name, 4);
 439         n.nhdr.n_type = type;
 440         n.nhdr.n_namesz = 5;
 441         n.nhdr.n_descsz = roundup(descsz, 4);
 442 
 443         if (gc_pwrite64(fd, &n, sizeof (n), *offp) != 0)
 444                 return (-1);
 445 
 446         *offp += sizeof (n);
 447 
 448         if (gc_pwrite64(fd, desc, n.nhdr.n_descsz, *offp) != 0)
 449                 return (-1);
 450 
 451         *offp += n.nhdr.n_descsz;
 452 
 453         return (0);
 454 }
 455 
 456 static int
 457 old_per_lwp(void *data, const lwpstatus_t *lsp, const lwpsinfo_t *lip)
 458 {
 459         pgcore_t *pgc = data;
 460         struct ps_prochandle *P = pgc->P;
 461 
 462         /*
 463          * Legacy core files don't contain information about zombie LWPs.
 464          * We use Plwp_iter_all() so that we get the lwpsinfo_t structure
 465          * more cheaply.
 466          */
 467         if (lsp == NULL)
 468                 return (0);
 469 
 470         if (P->status.pr_dmodel == PR_MODEL_NATIVE) {
 471                 prstatus_t prstatus;
 472                 mkprstatus(P, lsp, lip, &prstatus);
 473                 if (write_note(pgc->pgc_fd, NT_PRSTATUS, &prstatus,
 474                     sizeof (prstatus_t), pgc->pgc_doff) != 0)
 475                         return (0);
 476                 if (write_note(pgc->pgc_fd, NT_PRFPREG, &lsp->pr_fpreg,
 477                     sizeof (prfpregset_t), pgc->pgc_doff) != 0)
 478                         return (1);
 479 #ifdef _LP64
 480         } else {
 481                 prstatus32_t pr32;
 482                 prfpregset32_t pf32;
 483                 mkprstatus32(P, lsp, lip, &pr32);
 484                 if (write_note(pgc->pgc_fd, NT_PRSTATUS, &pr32,
 485                     sizeof (prstatus32_t), pgc->pgc_doff) != 0)
 486                         return (1);
 487                 prfpregset_n_to_32(&lsp->pr_fpreg, &pf32);
 488                 if (write_note(pgc->pgc_fd, NT_PRFPREG, &pf32,
 489                     sizeof (prfpregset32_t), pgc->pgc_doff) != 0)
 490                         return (1);
 491 #endif  /* _LP64 */
 492         }
 493 
 494 #ifdef sparc
 495         {
 496                 prxregset_t xregs;
 497                 if (Plwp_getxregs(P, lsp->pr_lwpid, &xregs) == 0 &&
 498                     write_note(pgc->pgc_fd, NT_PRXREG, &xregs,
 499                     sizeof (prxregset_t), pgc->pgc_doff) != 0)
 500                         return (1);
 501         }
 502 #endif  /* sparc */
 503 
 504         return (0);
 505 }
 506 
 507 static int
 508 new_per_lwp(void *data, const lwpstatus_t *lsp, const lwpsinfo_t *lip)
 509 {
 510         pgcore_t *pgc = data;
 511         struct ps_prochandle *P = pgc->P;
 512         psinfo_t ps;
 513 
 514         /*
 515          * If lsp is NULL this indicates that this is a zombie LWP in
 516          * which case we dump only the lwpsinfo_t structure and none of
 517          * the other ancillary LWP state data.
 518          */
 519         if (P->status.pr_dmodel == PR_MODEL_NATIVE) {
 520                 if (write_note(pgc->pgc_fd, NT_LWPSINFO, lip,
 521                     sizeof (lwpsinfo_t), pgc->pgc_doff) != 0)
 522                         return (1);
 523                 if (lsp == NULL)
 524                         return (0);
 525                 if (write_note(pgc->pgc_fd, NT_LWPSTATUS, lsp,
 526                     sizeof (lwpstatus_t), pgc->pgc_doff) != 0)
 527                         return (1);
 528 #ifdef _LP64
 529         } else {
 530                 lwpsinfo32_t li32;
 531                 lwpstatus32_t ls32;
 532                 lwpsinfo_n_to_32(lip, &li32);
 533                 if (write_note(pgc->pgc_fd, NT_LWPSINFO, &li32,
 534                     sizeof (lwpsinfo32_t), pgc->pgc_doff) != 0)
 535                         return (1);
 536                 if (lsp == NULL)
 537                         return (0);
 538                 lwpstatus_n_to_32(lsp, &ls32);
 539                 if (write_note(pgc->pgc_fd, NT_LWPSTATUS, &ls32,
 540                     sizeof (lwpstatus32_t), pgc->pgc_doff) != 0)
 541                         return (1);
 542 #endif  /* _LP64 */
 543         }
 544 
 545 #ifdef sparc
 546         {
 547                 prxregset_t xregs;
 548                 gwindows_t gwins;
 549                 size_t size;
 550 
 551                 if (Plwp_getxregs(P, lsp->pr_lwpid, &xregs) == 0) {
 552                         if (write_note(pgc->pgc_fd, NT_PRXREG, &xregs,
 553                             sizeof (prxregset_t), pgc->pgc_doff) != 0)
 554                                 return (1);
 555                 }
 556 
 557                 if (Plwp_getgwindows(P, lsp->pr_lwpid, &gwins) == 0 &&
 558                     gwins.wbcnt > 0) {
 559                         size = sizeof (gwins) - sizeof (gwins.wbuf) +
 560                             gwins.wbcnt * sizeof (gwins.wbuf[0]);
 561 
 562                         if (write_note(pgc->pgc_fd, NT_GWINDOWS, &gwins, size,
 563                             pgc->pgc_doff) != 0)
 564                                 return (1);
 565                 }
 566 
 567         }
 568 #ifdef __sparcv9
 569         if (P->status.pr_dmodel == PR_MODEL_LP64) {
 570                 asrset_t asrs;
 571                 if (Plwp_getasrs(P, lsp->pr_lwpid, asrs) == 0) {
 572                         if (write_note(pgc->pgc_fd, NT_ASRS, &asrs,
 573                             sizeof (asrset_t), pgc->pgc_doff) != 0)
 574                                 return (1);
 575                 }
 576         }
 577 #endif  /* __sparcv9 */
 578 #endif  /* sparc */
 579 
 580         if (!(lsp->pr_flags & PR_AGENT))
 581                 return (0);
 582 
 583         if (Plwp_getspymaster(P, lsp->pr_lwpid, &ps) != 0)
 584                 return (0);
 585 
 586         if (P->status.pr_dmodel == PR_MODEL_NATIVE) {
 587                 if (write_note(pgc->pgc_fd, NT_SPYMASTER, &ps,
 588                     sizeof (psinfo_t), pgc->pgc_doff) != 0)
 589                         return (1);
 590 #ifdef _LP64
 591         } else {
 592                 psinfo32_t ps32;
 593                 psinfo_n_to_32(&ps, &ps32);
 594                 if (write_note(pgc->pgc_fd, NT_SPYMASTER, &ps32,
 595                     sizeof (psinfo32_t), pgc->pgc_doff) != 0)
 596                         return (1);
 597 #endif  /* _LP64 */
 598         }
 599 
 600 
 601         return (0);
 602 }
 603 
 604 static int
 605 iter_fd(void *data, prfdinfo_t *fdinfo)
 606 {
 607         fditer_t *iter = data;
 608 
 609         if (write_note(iter->fd_fd, NT_FDINFO, fdinfo,
 610             sizeof (*fdinfo), iter->fd_doff) != 0)
 611                 return (1);
 612         return (0);
 613 }
 614 
 615 static uint_t
 616 count_sections(pgcore_t *pgc)
 617 {
 618         struct ps_prochandle *P = pgc->P;
 619         file_info_t *fptr;
 620         uint_t cnt;
 621         uint_t nshdrs = 0;
 622 
 623         if (!(pgc->pgc_content & (CC_CONTENT_CTF | CC_CONTENT_SYMTAB)))
 624                 return (0);
 625 
 626         fptr = list_next(&P->file_head);
 627         for (cnt = P->num_files; cnt > 0; cnt--, fptr = list_next(fptr)) {
 628                 int hit_symtab = 0;
 629 
 630                 Pbuild_file_symtab(P, fptr);
 631 
 632                 if ((pgc->pgc_content & CC_CONTENT_CTF) &&
 633                     Pbuild_file_ctf(P, fptr) != NULL) {
 634                         sym_tbl_t *sym;
 635 
 636                         nshdrs++;
 637 
 638                         if (fptr->file_ctf_dyn) {
 639                                 sym = &fptr->file_dynsym;
 640                         } else {
 641                                 sym = &fptr->file_symtab;
 642                                 hit_symtab = 1;
 643                         }
 644 
 645                         if (sym->sym_data_pri != NULL && sym->sym_symn != 0 &&
 646                             sym->sym_strs != NULL)
 647                                 nshdrs += 2;
 648                 }
 649 
 650                 if ((pgc->pgc_content & CC_CONTENT_SYMTAB) && !hit_symtab &&
 651                     fptr->file_symtab.sym_data_pri != NULL &&
 652                     fptr->file_symtab.sym_symn != 0 &&
 653                     fptr->file_symtab.sym_strs != NULL) {
 654                         nshdrs += 2;
 655                 }
 656         }
 657 
 658         return (nshdrs == 0 ? 0 : nshdrs + 2);
 659 }
 660 
 661 static int
 662 write_shdr(pgcore_t *pgc, shstrtype_t name, uint_t type, ulong_t flags,
 663     uintptr_t addr, ulong_t offset, size_t size, uint_t link, uint_t info,
 664     uintptr_t addralign, uintptr_t entsize)
 665 {
 666         if (pgc->P->status.pr_dmodel == PR_MODEL_ILP32) {
 667                 Elf32_Shdr shdr;
 668 
 669                 bzero(&shdr, sizeof (shdr));
 670                 shdr.sh_name = shstrtab_ndx(&pgc->pgc_shstrtab, name);
 671                 shdr.sh_type = type;
 672                 shdr.sh_flags = flags;
 673                 shdr.sh_addr = (Elf32_Addr)addr;
 674                 shdr.sh_offset = offset;
 675                 shdr.sh_size = size;
 676                 shdr.sh_link = link;
 677                 shdr.sh_info = info;
 678                 shdr.sh_addralign = addralign;
 679                 shdr.sh_entsize = entsize;
 680 
 681                 if (gc_pwrite64(pgc->pgc_fd, &shdr, sizeof (shdr),
 682                     *pgc->pgc_soff) != 0)
 683                         return (-1);
 684 
 685                 *pgc->pgc_soff += sizeof (shdr);
 686 #ifdef _LP64
 687         } else {
 688                 Elf64_Shdr shdr;
 689 
 690                 bzero(&shdr, sizeof (shdr));
 691                 shdr.sh_name = shstrtab_ndx(&pgc->pgc_shstrtab, name);
 692                 shdr.sh_type = type;
 693                 shdr.sh_flags = flags;
 694                 shdr.sh_addr = addr;
 695                 shdr.sh_offset = offset;
 696                 shdr.sh_size = size;
 697                 shdr.sh_link = link;
 698                 shdr.sh_info = info;
 699                 shdr.sh_addralign = addralign;
 700                 shdr.sh_entsize = entsize;
 701 
 702                 if (gc_pwrite64(pgc->pgc_fd, &shdr, sizeof (shdr),
 703                     *pgc->pgc_soff) != 0)
 704                         return (-1);
 705 
 706                 *pgc->pgc_soff += sizeof (shdr);
 707 #endif  /* _LP64 */
 708         }
 709 
 710         return (0);
 711 }
 712 
 713 static int
 714 dump_symtab(pgcore_t *pgc, file_info_t *fptr, uint_t index, int dynsym)
 715 {
 716         sym_tbl_t *sym = dynsym ? &fptr->file_dynsym : &fptr->file_symtab;
 717         shstrtype_t symname = dynsym ? STR_DYNSYM : STR_SYMTAB;
 718         shstrtype_t strname = dynsym ? STR_DYNSTR : STR_STRTAB;
 719         uint_t symtype = dynsym ? SHT_DYNSYM : SHT_SYMTAB;
 720         size_t size;
 721         uintptr_t addr = fptr->file_map->map_pmap.pr_vaddr;
 722 
 723         if (sym->sym_data_pri == NULL || sym->sym_symn == 0 ||
 724             sym->sym_strs == NULL)
 725                 return (0);
 726 
 727         size = sym->sym_hdr_pri.sh_size;
 728         if (gc_pwrite64(pgc->pgc_fd, sym->sym_data_pri->d_buf, size,
 729             *pgc->pgc_doff) != 0)
 730                 return (-1);
 731 
 732         if (write_shdr(pgc, symname, symtype, 0, addr, *pgc->pgc_doff, size,
 733             index + 1, sym->sym_hdr_pri.sh_info, sym->sym_hdr_pri.sh_addralign,
 734             sym->sym_hdr_pri.sh_entsize) != 0)
 735                 return (-1);
 736 
 737         *pgc->pgc_doff += roundup(size, 8);
 738 
 739         size = sym->sym_strhdr.sh_size;
 740         if (gc_pwrite64(pgc->pgc_fd, sym->sym_strs, size, *pgc->pgc_doff) != 0)
 741                 return (-1);
 742 
 743         if (write_shdr(pgc, strname, SHT_STRTAB, SHF_STRINGS, addr,
 744             *pgc->pgc_doff, size, 0, 0, 1, 0) != 0)
 745                 return (-1);
 746 
 747         *pgc->pgc_doff += roundup(size, 8);
 748 
 749         return (0);
 750 }
 751 
 752 static int
 753 dump_sections(pgcore_t *pgc)
 754 {
 755         struct ps_prochandle *P = pgc->P;
 756         file_info_t *fptr;
 757         uint_t cnt;
 758         uint_t index = 1;
 759 
 760         if (!(pgc->pgc_content & (CC_CONTENT_CTF | CC_CONTENT_SYMTAB)))
 761                 return (0);
 762 
 763         fptr = list_next(&P->file_head);
 764         for (cnt = P->num_files; cnt > 0; cnt--, fptr = list_next(fptr)) {
 765                 int hit_symtab = 0;
 766 
 767                 Pbuild_file_symtab(P, fptr);
 768 
 769                 if ((pgc->pgc_content & CC_CONTENT_CTF) &&
 770                     Pbuild_file_ctf(P, fptr) != NULL) {
 771                         sym_tbl_t *sym;
 772                         uint_t dynsym;
 773                         uint_t symindex = 0;
 774 
 775                         /*
 776                          * Write the symtab out first so we can correctly
 777                          * set the sh_link field in the CTF section header.
 778                          * symindex will be 0 if there is no corresponding
 779                          * symbol table section.
 780                          */
 781                         if (fptr->file_ctf_dyn) {
 782                                 sym = &fptr->file_dynsym;
 783                                 dynsym = 1;
 784                         } else {
 785                                 sym = &fptr->file_symtab;
 786                                 dynsym = 0;
 787                                 hit_symtab = 1;
 788                         }
 789 
 790                         if (sym->sym_data_pri != NULL && sym->sym_symn != 0 &&
 791                             sym->sym_strs != NULL) {
 792                                 symindex = index;
 793                                 if (dump_symtab(pgc, fptr, index, dynsym) != 0)
 794                                         return (-1);
 795                                 index += 2;
 796                         }
 797 
 798                         /*
 799                          * Write the CTF data that we've read out of the
 800                          * file itself into the core file.
 801                          */
 802                         if (gc_pwrite64(pgc->pgc_fd, fptr->file_ctf_buf,
 803                             fptr->file_ctf_size, *pgc->pgc_doff) != 0)
 804                                 return (-1);
 805 
 806                         if (write_shdr(pgc, STR_CTF, SHT_PROGBITS, 0,
 807                             fptr->file_map->map_pmap.pr_vaddr, *pgc->pgc_doff,
 808                             fptr->file_ctf_size, symindex, 0, 4, 0) != 0)
 809                                 return (-1);
 810 
 811                         index++;
 812                         *pgc->pgc_doff += roundup(fptr->file_ctf_size, 8);
 813                 }
 814 
 815                 if ((pgc->pgc_content & CC_CONTENT_SYMTAB) && !hit_symtab &&
 816                     fptr->file_symtab.sym_data_pri != NULL &&
 817                     fptr->file_symtab.sym_symn != 0 &&
 818                     fptr->file_symtab.sym_strs != NULL) {
 819                         if (dump_symtab(pgc, fptr, index, 0) != 0)
 820                                 return (-1);
 821                         index += 2;
 822                 }
 823         }
 824 
 825         return (0);
 826 }
 827 
 828 /*ARGSUSED*/
 829 static int
 830 dump_map(void *data, const prmap_t *pmp, const char *name)
 831 {
 832         pgcore_t *pgc = data;
 833         struct ps_prochandle *P = pgc->P;
 834 #ifdef _LP64
 835         Elf64_Phdr phdr;
 836 #else
 837         Elf32_Phdr phdr;
 838 #endif
 839         size_t n;
 840 
 841         bzero(&phdr, sizeof (phdr));
 842         phdr.p_type = PT_LOAD;
 843         phdr.p_vaddr = pmp->pr_vaddr;
 844         phdr.p_memsz = pmp->pr_size;
 845         if (pmp->pr_mflags & MA_READ)
 846                 phdr.p_flags |= PF_R;
 847         if (pmp->pr_mflags & MA_WRITE)
 848                 phdr.p_flags |= PF_W;
 849         if (pmp->pr_mflags & MA_EXEC)
 850                 phdr.p_flags |= PF_X;
 851 
 852         if (pmp->pr_vaddr + pmp->pr_size > P->status.pr_stkbase &&
 853             pmp->pr_vaddr < P->status.pr_stkbase + P->status.pr_stksize) {
 854                 if (!(pgc->pgc_content & CC_CONTENT_STACK))
 855                         goto exclude;
 856 
 857         } else if ((pmp->pr_mflags & MA_ANON) &&
 858             pmp->pr_vaddr + pmp->pr_size > P->status.pr_brkbase &&
 859             pmp->pr_vaddr < P->status.pr_brkbase + P->status.pr_brksize) {
 860                 if (!(pgc->pgc_content & CC_CONTENT_HEAP))
 861                         goto exclude;
 862 
 863         } else if (pmp->pr_mflags & MA_ISM) {
 864                 if (pmp->pr_mflags & MA_NORESERVE) {
 865                         if (!(pgc->pgc_content & CC_CONTENT_DISM))
 866                                 goto exclude;
 867                 } else {
 868                         if (!(pgc->pgc_content & CC_CONTENT_ISM))
 869                                 goto exclude;
 870                 }
 871 
 872         } else if (pmp->pr_mflags & MA_SHM) {
 873                 if (!(pgc->pgc_content & CC_CONTENT_SHM))
 874                         goto exclude;
 875 
 876         } else if (pmp->pr_mflags & MA_SHARED) {
 877                 if (pmp->pr_mflags & MA_ANON) {
 878                         if (!(pgc->pgc_content & CC_CONTENT_SHANON))
 879                                 goto exclude;
 880                 } else {
 881                         if (!(pgc->pgc_content & CC_CONTENT_SHFILE))
 882                                 goto exclude;
 883                 }
 884 
 885         } else if (pmp->pr_mflags & MA_ANON) {
 886                 if (!(pgc->pgc_content & CC_CONTENT_ANON))
 887                         goto exclude;
 888 
 889         } else if (phdr.p_flags == (PF_R | PF_X)) {
 890                 if (!(pgc->pgc_content & CC_CONTENT_TEXT))
 891                         goto exclude;
 892 
 893         } else if (phdr.p_flags == PF_R) {
 894                 if (!(pgc->pgc_content & CC_CONTENT_RODATA))
 895                         goto exclude;
 896 
 897         } else {
 898                 if (!(pgc->pgc_content & CC_CONTENT_DATA))
 899                         goto exclude;
 900         }
 901 
 902         n = 0;
 903         while (n < pmp->pr_size) {
 904                 size_t csz = MIN(pmp->pr_size - n, pgc->pgc_chunksz);
 905 
 906                 /*
 907                  * If we can't read out part of the victim's address
 908                  * space for some reason ignore that failure and try to
 909                  * emit a partial core file without that mapping's data.
 910                  * As in the kernel, we mark these failures with the
 911                  * PF_SUNW_FAILURE flag and store the errno where the
 912                  * mapping would have been.
 913                  */
 914                 if (Pread(P, pgc->pgc_chunk, csz, pmp->pr_vaddr + n) != csz ||
 915                     gc_pwrite64(pgc->pgc_fd, pgc->pgc_chunk, csz,
 916                     *pgc->pgc_doff + n) != 0) {
 917                         int err = errno;
 918                         (void) gc_pwrite64(pgc->pgc_fd, &err, sizeof (err),
 919                             *pgc->pgc_doff);
 920                         *pgc->pgc_doff += roundup(sizeof (err), 8);
 921 
 922                         phdr.p_flags |= PF_SUNW_FAILURE;
 923                         (void) ftruncate64(pgc->pgc_fd, *pgc->pgc_doff);
 924                         goto exclude;
 925                 }
 926 
 927                 n += csz;
 928         }
 929 
 930         phdr.p_offset = *pgc->pgc_doff;
 931         phdr.p_filesz = pmp->pr_size;
 932         *pgc->pgc_doff += roundup(phdr.p_filesz, 8);
 933 
 934 exclude:
 935         if (P->status.pr_dmodel == PR_MODEL_NATIVE) {
 936                 if (gc_pwrite64(pgc->pgc_fd, &phdr, sizeof (phdr),
 937                     *pgc->pgc_poff) != 0)
 938                         return (1);
 939 
 940                 *pgc->pgc_poff += sizeof (phdr);
 941 #ifdef _LP64
 942         } else {
 943                 Elf32_Phdr phdr32;
 944 
 945                 bzero(&phdr32, sizeof (phdr32));
 946                 phdr32.p_type = phdr.p_type;
 947                 phdr32.p_vaddr = (Elf32_Addr)phdr.p_vaddr;
 948                 phdr32.p_memsz = (Elf32_Word)phdr.p_memsz;
 949                 phdr32.p_flags = phdr.p_flags;
 950                 phdr32.p_offset = (Elf32_Off)phdr.p_offset;
 951                 phdr32.p_filesz = (Elf32_Word)phdr.p_filesz;
 952 
 953                 if (gc_pwrite64(pgc->pgc_fd, &phdr32, sizeof (phdr32),
 954                     *pgc->pgc_poff) != 0)
 955                         return (1);
 956 
 957                 *pgc->pgc_poff += sizeof (phdr32);
 958 #endif  /* _LP64 */
 959         }
 960 
 961         return (0);
 962 }
 963 
 964 int
 965 write_shstrtab(struct ps_prochandle *P, pgcore_t *pgc)
 966 {
 967         off64_t off = *pgc->pgc_doff;
 968         size_t size = 0;
 969         shstrtab_t *s = &pgc->pgc_shstrtab;
 970         int i, ndx;
 971 
 972         if (shstrtab_size(s) == 1)
 973                 return (0);
 974 
 975         /*
 976          * Preemptively stick the name of the shstrtab in the string table.
 977          */
 978         (void) shstrtab_ndx(&pgc->pgc_shstrtab, STR_SHSTRTAB);
 979         size = shstrtab_size(s);
 980 
 981         /*
 982          * Dump all the strings that we used being sure we include the
 983          * terminating null character.
 984          */
 985         for (i = 0; i < STR_NUM; i++) {
 986                 if ((ndx = s->sst_ndx[i]) != 0 || i == STR_NONE) {
 987                         const char *str = shstrtab_data[i];
 988                         size_t len = strlen(str) + 1;
 989                         if (gc_pwrite64(pgc->pgc_fd, str, len, off + ndx) != 0)
 990                                 return (1);
 991                 }
 992         }
 993 
 994         if (P->status.pr_dmodel == PR_MODEL_ILP32) {
 995                 Elf32_Shdr shdr;
 996 
 997                 bzero(&shdr, sizeof (shdr));
 998                 shdr.sh_name = shstrtab_ndx(&pgc->pgc_shstrtab, STR_SHSTRTAB);
 999                 shdr.sh_size = size;
1000                 shdr.sh_offset = *pgc->pgc_doff;
1001                 shdr.sh_addralign = 1;
1002                 shdr.sh_flags = SHF_STRINGS;
1003                 shdr.sh_type = SHT_STRTAB;
1004 
1005                 if (gc_pwrite64(pgc->pgc_fd, &shdr, sizeof (shdr),
1006                     *pgc->pgc_soff) != 0)
1007                         return (1);
1008 
1009                 *pgc->pgc_soff += sizeof (shdr);
1010 #ifdef _LP64
1011         } else {
1012                 Elf64_Shdr shdr;
1013 
1014                 bzero(&shdr, sizeof (shdr));
1015                 shdr.sh_name = shstrtab_ndx(&pgc->pgc_shstrtab, STR_SHSTRTAB);
1016                 shdr.sh_size = size;
1017                 shdr.sh_offset = *pgc->pgc_doff;
1018                 shdr.sh_addralign = 1;
1019                 shdr.sh_flags = SHF_STRINGS;
1020                 shdr.sh_type = SHT_STRTAB;
1021 
1022                 if (gc_pwrite64(pgc->pgc_fd, &shdr, sizeof (shdr),
1023                     *pgc->pgc_soff) != 0)
1024                         return (1);
1025 
1026                 *pgc->pgc_soff += sizeof (shdr);
1027 #endif  /* _LP64 */
1028         }
1029 
1030         *pgc->pgc_doff += roundup(size, 8);
1031 
1032         return (0);
1033 }
1034 
1035 /*
1036  * Don't explicity stop the process; that's up to the consumer.
1037  */
1038 int
1039 Pfgcore(struct ps_prochandle *P, int fd, core_content_t content)
1040 {
1041         char plat[SYS_NMLN];
1042         char zonename[ZONENAME_MAX];
1043         int platlen = -1;
1044         pgcore_t pgc;
1045         off64_t poff, soff, doff, boff;
1046         struct utsname uts;
1047         uint_t nphdrs, nshdrs;
1048 
1049         if (ftruncate64(fd, 0) != 0)
1050                 return (-1);
1051 
1052         if (content == CC_CONTENT_INVALID) {
1053                 errno = EINVAL;
1054                 return (-1);
1055         }
1056 
1057         /*
1058          * Cache the mappings and other useful data.
1059          */
1060         (void) Prd_agent(P);
1061         (void) Ppsinfo(P);
1062 
1063         pgc.P = P;
1064         pgc.pgc_fd = fd;
1065         pgc.pgc_poff = &poff;
1066         pgc.pgc_soff = &soff;
1067         pgc.pgc_doff = &doff;
1068         pgc.pgc_content = content;
1069         pgc.pgc_chunksz = PAGESIZE;
1070         if ((pgc.pgc_chunk = malloc(pgc.pgc_chunksz)) == NULL)
1071                 return (-1);
1072 
1073         shstrtab_init(&pgc.pgc_shstrtab);
1074 
1075         /*
1076          * There are two PT_NOTE program headers for ancillary data, and
1077          * one for each mapping.
1078          */
1079         nphdrs = 2 + P->map_count;
1080         nshdrs = count_sections(&pgc);
1081 
1082         (void) Pplatform(P, plat, sizeof (plat));
1083         platlen = strlen(plat) + 1;
1084         Preadauxvec(P);
1085         (void) Puname(P, &uts);
1086         if (Pzonename(P, zonename, sizeof (zonename)) == NULL)
1087                 zonename[0] = '\0';
1088 
1089         /*
1090          * The core file contents may required zero section headers, but if we
1091          * overflow the 16 bits allotted to the program header count in the ELF
1092          * header, we'll need that program header at index zero.
1093          */
1094         if (nshdrs == 0 && nphdrs >= PN_XNUM)
1095                 nshdrs = 1;
1096 
1097         /*
1098          * Set up the ELF header.
1099          */
1100         if (P->status.pr_dmodel == PR_MODEL_ILP32) {
1101                 Elf32_Ehdr ehdr;
1102 
1103                 bzero(&ehdr, sizeof (ehdr));
1104                 ehdr.e_ident[EI_MAG0] = ELFMAG0;
1105                 ehdr.e_ident[EI_MAG1] = ELFMAG1;
1106                 ehdr.e_ident[EI_MAG2] = ELFMAG2;
1107                 ehdr.e_ident[EI_MAG3] = ELFMAG3;
1108                 ehdr.e_type = ET_CORE;
1109 
1110                 ehdr.e_ident[EI_CLASS] = ELFCLASS32;
1111 #if defined(__sparc)
1112                 ehdr.e_machine = EM_SPARC;
1113                 ehdr.e_ident[EI_DATA] = ELFDATA2MSB;
1114 #elif defined(__i386) || defined(__amd64)
1115                 ehdr.e_machine = EM_386;
1116                 ehdr.e_ident[EI_DATA] = ELFDATA2LSB;
1117 #else
1118 #error "unknown machine type"
1119 #endif
1120                 ehdr.e_ident[EI_VERSION] = EV_CURRENT;
1121 
1122                 ehdr.e_version = EV_CURRENT;
1123                 ehdr.e_ehsize = sizeof (ehdr);
1124 
1125                 if (nphdrs >= PN_XNUM)
1126                         ehdr.e_phnum = PN_XNUM;
1127                 else
1128                         ehdr.e_phnum = (unsigned short)nphdrs;
1129 
1130                 ehdr.e_phentsize = sizeof (Elf32_Phdr);
1131                 ehdr.e_phoff = ehdr.e_ehsize;
1132 
1133                 if (nshdrs > 0) {
1134                         if (nshdrs >= SHN_LORESERVE)
1135                                 ehdr.e_shnum = 0;
1136                         else
1137                                 ehdr.e_shnum = (unsigned short)nshdrs;
1138 
1139                         if (nshdrs - 1 >= SHN_LORESERVE)
1140                                 ehdr.e_shstrndx = SHN_XINDEX;
1141                         else
1142                                 ehdr.e_shstrndx = (unsigned short)(nshdrs - 1);
1143 
1144                         ehdr.e_shentsize = sizeof (Elf32_Shdr);
1145                         ehdr.e_shoff = ehdr.e_phoff + ehdr.e_phentsize * nphdrs;
1146                 }
1147 
1148                 if (gc_pwrite64(fd, &ehdr, sizeof (ehdr), 0) != 0)
1149                         goto err;
1150 
1151                 poff = ehdr.e_phoff;
1152                 soff = ehdr.e_shoff;
1153                 doff = boff = ehdr.e_ehsize +
1154                     ehdr.e_phentsize * nphdrs +
1155                     ehdr.e_shentsize * nshdrs;
1156 
1157 #ifdef _LP64
1158         } else {
1159                 Elf64_Ehdr ehdr;
1160 
1161                 bzero(&ehdr, sizeof (ehdr));
1162                 ehdr.e_ident[EI_MAG0] = ELFMAG0;
1163                 ehdr.e_ident[EI_MAG1] = ELFMAG1;
1164                 ehdr.e_ident[EI_MAG2] = ELFMAG2;
1165                 ehdr.e_ident[EI_MAG3] = ELFMAG3;
1166                 ehdr.e_type = ET_CORE;
1167 
1168                 ehdr.e_ident[EI_CLASS] = ELFCLASS64;
1169 #if defined(__sparc)
1170                 ehdr.e_machine = EM_SPARCV9;
1171                 ehdr.e_ident[EI_DATA] = ELFDATA2MSB;
1172 #elif defined(__i386) || defined(__amd64)
1173                 ehdr.e_machine = EM_AMD64;
1174                 ehdr.e_ident[EI_DATA] = ELFDATA2LSB;
1175 #else
1176 #error "unknown machine type"
1177 #endif
1178                 ehdr.e_ident[EI_VERSION] = EV_CURRENT;
1179 
1180                 ehdr.e_version = EV_CURRENT;
1181                 ehdr.e_ehsize = sizeof (ehdr);
1182 
1183                 if (nphdrs >= PN_XNUM)
1184                         ehdr.e_phnum = PN_XNUM;
1185                 else
1186                         ehdr.e_phnum = (unsigned short)nphdrs;
1187 
1188                 ehdr.e_phentsize = sizeof (Elf64_Phdr);
1189                 ehdr.e_phoff = ehdr.e_ehsize;
1190 
1191                 if (nshdrs > 0) {
1192                         if (nshdrs >= SHN_LORESERVE)
1193                                 ehdr.e_shnum = 0;
1194                         else
1195                                 ehdr.e_shnum = (unsigned short)nshdrs;
1196 
1197                         if (nshdrs - 1 >= SHN_LORESERVE)
1198                                 ehdr.e_shstrndx = SHN_XINDEX;
1199                         else
1200                                 ehdr.e_shstrndx = (unsigned short)(nshdrs - 1);
1201 
1202                         ehdr.e_shentsize = sizeof (Elf64_Shdr);
1203                         ehdr.e_shoff = ehdr.e_phoff + ehdr.e_phentsize * nphdrs;
1204                 }
1205 
1206                 if (gc_pwrite64(fd, &ehdr, sizeof (ehdr), 0) != 0)
1207                         goto err;
1208 
1209                 poff = ehdr.e_phoff;
1210                 soff = ehdr.e_shoff;
1211                 doff = boff = ehdr.e_ehsize +
1212                     ehdr.e_phentsize * nphdrs +
1213                     ehdr.e_shentsize * nshdrs;
1214 
1215 #endif  /* _LP64 */
1216         }
1217 
1218         /*
1219          * Write the zero indexed section if it exists.
1220          */
1221         if (nshdrs > 0 && write_shdr(&pgc, STR_NONE, 0, 0, 0, 0,
1222             nshdrs >= SHN_LORESERVE ? nshdrs : 0,
1223             nshdrs - 1 >= SHN_LORESERVE ? nshdrs - 1 : 0,
1224             nphdrs >= PN_XNUM ? nphdrs : 0, 0, 0) != 0)
1225                 goto err;
1226 
1227         /*
1228          * Construct the old-style note header and section.
1229          */
1230 
1231         if (P->status.pr_dmodel == PR_MODEL_NATIVE) {
1232                 prpsinfo_t prpsinfo;
1233 
1234                 mkprpsinfo(P, &prpsinfo);
1235                 if (write_note(fd, NT_PRPSINFO, &prpsinfo, sizeof (prpsinfo_t),
1236                     &doff) != 0) {
1237                         goto err;
1238                 }
1239                 if (write_note(fd, NT_AUXV, P->auxv,
1240                     P->nauxv * sizeof (P->auxv[0]), &doff) != 0) {
1241                         goto err;
1242                 }
1243 #ifdef _LP64
1244         } else {
1245                 prpsinfo32_t pi32;
1246                 auxv32_t *av32;
1247                 size_t size = sizeof (auxv32_t) * P->nauxv;
1248                 int i;
1249 
1250                 mkprpsinfo32(P, &pi32);
1251                 if (write_note(fd, NT_PRPSINFO, &pi32, sizeof (prpsinfo32_t),
1252                     &doff) != 0) {
1253                         goto err;
1254                 }
1255 
1256                 if ((av32 = malloc(size)) == NULL)
1257                         goto err;
1258 
1259                 for (i = 0; i < P->nauxv; i++) {
1260                         auxv_n_to_32(&P->auxv[i], &av32[i]);
1261                 }
1262 
1263                 if (write_note(fd, NT_AUXV, av32, size, &doff) != 0) {
1264                         free(av32);
1265                         goto err;
1266                 }
1267 
1268                 free(av32);
1269 #endif  /* _LP64 */
1270         }
1271 
1272         if (write_note(fd, NT_PLATFORM, plat, platlen, &doff) != 0)
1273                 goto err;
1274 
1275         if (Plwp_iter_all(P, old_per_lwp, &pgc) != 0)
1276                 goto err;
1277 
1278         if (P->status.pr_dmodel == PR_MODEL_ILP32) {
1279                 Elf32_Phdr phdr;
1280 
1281                 bzero(&phdr, sizeof (phdr));
1282                 phdr.p_type = PT_NOTE;
1283                 phdr.p_flags = PF_R;
1284                 phdr.p_offset = (Elf32_Off)boff;
1285                 phdr.p_filesz = doff - boff;
1286                 boff = doff;
1287 
1288                 if (gc_pwrite64(fd, &phdr, sizeof (phdr), poff) != 0)
1289                         goto err;
1290                 poff += sizeof (phdr);
1291 #ifdef _LP64
1292         } else {
1293                 Elf64_Phdr phdr;
1294 
1295                 bzero(&phdr, sizeof (phdr));
1296                 phdr.p_type = PT_NOTE;
1297                 phdr.p_flags = PF_R;
1298                 phdr.p_offset = boff;
1299                 phdr.p_filesz = doff - boff;
1300                 boff = doff;
1301 
1302                 if (gc_pwrite64(fd, &phdr, sizeof (phdr), poff) != 0)
1303                         goto err;
1304                 poff += sizeof (phdr);
1305 #endif  /* _LP64 */
1306         }
1307 
1308         /*
1309          * Construct the new-style note header and section.
1310          */
1311 
1312         if (P->status.pr_dmodel == PR_MODEL_NATIVE) {
1313                 if (write_note(fd, NT_PSINFO, &P->psinfo, sizeof (psinfo_t),
1314                     &doff) != 0) {
1315                         goto err;
1316                 }
1317                 if (write_note(fd, NT_PSTATUS, &P->status, sizeof (pstatus_t),
1318                     &doff) != 0) {
1319                         goto err;
1320                 }
1321                 if (write_note(fd, NT_AUXV, P->auxv,
1322                     P->nauxv * sizeof (P->auxv[0]), &doff) != 0) {
1323                         goto err;
1324                 }
1325 #ifdef _LP64
1326         } else {
1327                 psinfo32_t pi32;
1328                 pstatus32_t ps32;
1329                 auxv32_t *av32;
1330                 size_t size = sizeof (auxv32_t) * P->nauxv;
1331                 int i;
1332 
1333                 psinfo_n_to_32(&P->psinfo, &pi32);
1334                 if (write_note(fd, NT_PSINFO, &pi32, sizeof (psinfo32_t),
1335                     &doff) != 0) {
1336                         goto err;
1337                 }
1338                 pstatus_n_to_32(&P->status, &ps32);
1339                 if (write_note(fd, NT_PSTATUS, &ps32, sizeof (pstatus32_t),
1340                     &doff) != 0) {
1341                         goto err;
1342                 }
1343                 if ((av32 = malloc(size)) == NULL)
1344                         goto err;
1345 
1346                 for (i = 0; i < P->nauxv; i++) {
1347                         auxv_n_to_32(&P->auxv[i], &av32[i]);
1348                 }
1349 
1350                 if (write_note(fd, NT_AUXV, av32, size, &doff) != 0) {
1351                         free(av32);
1352                         goto err;
1353                 }
1354 
1355                 free(av32);
1356 #endif  /* _LP64 */
1357         }
1358 
1359         if (write_note(fd, NT_PLATFORM, plat, platlen, &doff) != 0 ||
1360             write_note(fd, NT_UTSNAME, &uts, sizeof (uts), &doff) != 0 ||
1361             write_note(fd, NT_CONTENT, &content, sizeof (content), &doff) != 0)
1362                 goto err;
1363 
1364         {
1365                 prcred_t cred, *cp;
1366                 size_t size = sizeof (prcred_t);
1367 
1368                 if (Pcred(P, &cred, 0) != 0)
1369                         goto err;
1370 
1371                 if (cred.pr_ngroups > 0)
1372                         size += sizeof (gid_t) * (cred.pr_ngroups - 1);
1373                 if ((cp = malloc(size)) == NULL)
1374                         goto err;
1375 
1376                 if (Pcred(P, cp, cred.pr_ngroups) != 0 ||
1377                     write_note(fd, NT_PRCRED, cp, size, &doff) != 0) {
1378                         free(cp);
1379                         goto err;
1380                 }
1381 
1382                 free(cp);
1383         }
1384 
1385         {
1386                 prpriv_t *ppriv = NULL;
1387                 const priv_impl_info_t *pinfo;
1388                 size_t pprivsz, pinfosz;
1389 
1390                 if (Ppriv(P, &ppriv) == -1)
1391                         goto err;
1392                 pprivsz = PRIV_PRPRIV_SIZE(ppriv);
1393 
1394                 if (write_note(fd, NT_PRPRIV, ppriv, pprivsz, &doff) != 0) {
1395                         Ppriv_free(P, ppriv);
1396                         goto err;
1397                 }
1398                 Ppriv_free(P, ppriv);
1399 
1400                 if ((pinfo = getprivimplinfo()) == NULL)
1401                         goto err;
1402                 pinfosz = PRIV_IMPL_INFO_SIZE(pinfo);
1403 
1404                 if (write_note(fd, NT_PRPRIVINFO, pinfo, pinfosz, &doff) != 0)
1405                         goto err;
1406         }
1407 
1408         if (write_note(fd, NT_ZONENAME, zonename, strlen(zonename) + 1,
1409             &doff) != 0)
1410                 goto err;
1411 
1412         {
1413                 fditer_t iter;
1414                 iter.fd_fd = fd;
1415                 iter.fd_doff = &doff;
1416 
1417                 if (Pfdinfo_iter(P, iter_fd, &iter) != 0)
1418                         goto err;
1419         }
1420 
1421 
1422         {
1423                 prsecflags_t *psf = NULL;
1424 
1425                 if (Psecflags(P, &psf) != 0)
1426                         goto err;
1427 
1428                 if (write_note(fd, NT_SECFLAGS, psf,
1429                     sizeof (prsecflags_t), &doff) != 0) {
1430                         Psecflags_free(psf);
1431                         goto err;
1432                 }
1433 
1434                 Psecflags_free(psf);
1435         }
1436 
1437 #if defined(__i386) || defined(__amd64)
1438         /* CSTYLED */
1439         {
1440                 struct ssd *ldtp;
1441                 size_t size;
1442                 int nldt;
1443 
1444                 /*
1445                  * Only dump out non-zero sized LDT notes.
1446                  */
1447                 if ((nldt = Pldt(P, NULL, 0)) != 0) {
1448                         size = sizeof (struct ssd) * nldt;
1449                         if ((ldtp = malloc(size)) == NULL)
1450                                 goto err;
1451 
1452                         if (Pldt(P, ldtp, nldt) == -1 ||
1453                             write_note(fd, NT_LDT, ldtp, size, &doff) != 0) {
1454                                 free(ldtp);
1455                                 goto err;
1456                         }
1457 
1458                         free(ldtp);
1459                 }
1460         }
1461 #endif  /* __i386 || __amd64 */
1462 
1463         if (Plwp_iter_all(P, new_per_lwp, &pgc) != 0)
1464                 goto err;
1465 
1466         if (P->status.pr_dmodel == PR_MODEL_ILP32) {
1467                 Elf32_Phdr phdr;
1468 
1469                 bzero(&phdr, sizeof (phdr));
1470                 phdr.p_type = PT_NOTE;
1471                 phdr.p_flags = PF_R;
1472                 phdr.p_offset = (Elf32_Off)boff;
1473                 phdr.p_filesz = doff - boff;
1474                 boff = doff;
1475 
1476                 if (gc_pwrite64(fd, &phdr, sizeof (phdr), poff) != 0)
1477                         goto err;
1478                 poff += sizeof (phdr);
1479 #ifdef _LP64
1480         } else {
1481                 Elf64_Phdr phdr;
1482 
1483                 bzero(&phdr, sizeof (phdr));
1484                 phdr.p_type = PT_NOTE;
1485                 phdr.p_flags = PF_R;
1486                 phdr.p_offset = boff;
1487                 phdr.p_filesz = doff - boff;
1488                 boff = doff;
1489 
1490                 if (gc_pwrite64(fd, &phdr, sizeof (phdr), poff) != 0)
1491                         goto err;
1492                 poff += sizeof (phdr);
1493 #endif  /* _LP64 */
1494         }
1495 
1496         /*
1497          * Construct the headers for each mapping and write out its data
1498          * if the content parameter indicates that it should be present
1499          * in the core file.
1500          */
1501         if (Pmapping_iter(P, dump_map, &pgc) != 0)
1502                 goto err;
1503 
1504         if (dump_sections(&pgc) != 0)
1505                 goto err;
1506 
1507         if (write_shstrtab(P, &pgc) != 0)
1508                 goto err;
1509 
1510         free(pgc.pgc_chunk);
1511 
1512         return (0);
1513 
1514 err:
1515         /*
1516          * Wipe out anything we may have written if there was an error.
1517          */
1518         (void) ftruncate64(fd, 0);
1519         free(pgc.pgc_chunk);
1520 
1521         return (-1);
1522 }
1523 
1524 static const char *content_str[] = {
1525         "stack",        /* CC_CONTENT_STACK */
1526         "heap",         /* CC_CONTENT_HEAP */
1527         "shfile",       /* CC_CONTENT_SHFILE */
1528         "shanon",       /* CC_CONTENT_SHANON */
1529         "text",         /* CC_CONTENT_TEXT */
1530         "data",         /* CC_CONTENT_DATA */
1531         "rodata",       /* CC_CONTENT_RODATA */
1532         "anon",         /* CC_CONTENT_ANON */
1533         "shm",          /* CC_CONTENT_SHM */
1534         "ism",          /* CC_CONTENT_ISM */
1535         "dism",         /* CC_CONTENT_DISM */
1536         "ctf",          /* CC_CONTENT_CTF */
1537         "symtab",       /* CC_CONTENT_SYMTAB */
1538 };
1539 
1540 static uint_t ncontent_str = sizeof (content_str) / sizeof (content_str[0]);
1541 
1542 #define STREQ(a, b, n)  (strlen(b) == (n) && strncmp(a, b, n) == 0)
1543 
1544 int
1545 proc_str2content(const char *str, core_content_t *cp)
1546 {
1547         const char *cur = str;
1548         int add = 1;
1549         core_content_t mask, content = 0;
1550 
1551         for (;;) {
1552                 for (cur = str; isalpha(*cur); cur++)
1553                         continue;
1554 
1555                 if (STREQ(str, "default", cur - str)) {
1556                         mask = CC_CONTENT_DEFAULT;
1557                 } else if (STREQ(str, "all", cur - str)) {
1558                         mask = CC_CONTENT_ALL;
1559                 } else if (STREQ(str, "none", cur - str)) {
1560                         mask = 0;
1561                 } else {
1562                         int i = 0;
1563 
1564                         while (!STREQ(str, content_str[i], cur - str)) {
1565                                 i++;
1566 
1567                                 if (i >= ncontent_str)
1568                                         return (-1);
1569                         }
1570 
1571                         mask = (core_content_t)1 << i;
1572                 }
1573 
1574                 if (add)
1575                         content |= mask;
1576                 else
1577                         content &= ~mask;
1578 
1579                 switch (*cur) {
1580                 case '\0':
1581                         *cp = content;
1582                         return (0);
1583                 case '+':
1584                         add = 1;
1585                         break;
1586                 case '-':
1587                         add = 0;
1588                         break;
1589                 default:
1590                         return (-1);
1591                 }
1592 
1593                 str = cur + 1;
1594         }
1595 }
1596 
1597 static int
1598 popc(core_content_t x)
1599 {
1600         int i;
1601 
1602         for (i = 0; x != 0; i++)
1603                 x &= x - 1;
1604 
1605         return (i);
1606 }
1607 
1608 int
1609 proc_content2str(core_content_t content, char *buf, size_t size)
1610 {
1611         int nonecnt, defcnt, allcnt;
1612         core_content_t mask, bit;
1613         int first;
1614         uint_t index;
1615         size_t n, tot = 0;
1616 
1617         if (content == 0)
1618                 return ((int)strlcpy(buf, "none", size));
1619 
1620         if (content & ~CC_CONTENT_ALL)
1621                 return ((int)strlcpy(buf, "<invalid>", size));
1622 
1623         nonecnt = popc(content);
1624         defcnt = 1 + popc(content ^ CC_CONTENT_DEFAULT);
1625         allcnt = 1 + popc(content ^ CC_CONTENT_ALL);
1626 
1627         if (defcnt <= nonecnt && defcnt <= allcnt) {
1628                 mask = content ^ CC_CONTENT_DEFAULT;
1629                 first = 0;
1630                 tot += (n = strlcpy(buf, "default", size));
1631                 if (n > size)
1632                         n = size;
1633                 buf += n;
1634                 size -= n;
1635         } else if (allcnt < nonecnt) {
1636                 mask = content ^ CC_CONTENT_ALL;
1637                 first = 0;
1638                 tot += (n = strlcpy(buf, "all", size));
1639                 if (n > size)
1640                         n = size;
1641                 buf += n;
1642                 size -= n;
1643         } else {
1644                 mask = content;
1645                 first = 1;
1646         }
1647 
1648         while (mask != 0) {
1649                 bit = mask ^ (mask & (mask - 1));
1650 
1651                 if (!first) {
1652                         if (size > 1) {
1653                                 *buf = (bit & content) ? '+' : '-';
1654                                 buf++;
1655                                 size--;
1656                         }
1657 
1658                         tot++;
1659                 }
1660                 index = popc(bit - 1);
1661                 tot += (n = strlcpy(buf, content_str[index], size));
1662                 if (n > size)
1663                         n = size;
1664                 buf += n;
1665                 size -= n;
1666 
1667                 mask ^= bit;
1668                 first = 0;
1669         }
1670 
1671         return ((int)tot);
1672 }