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Unleashed v1.4
[unleashed.git] / usr / src / lib / libproc / common / Pgcore.c
blob676ffb2982e32ad9b58d7d6e652ccb49992a736c
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 off_t *pgc_poff;
83 off_t *pgc_soff;
84 off_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 off_t *fd_doff;
95 } fditer_t;
96
97 static int
98 gc_pwrite64(int fd, const void *buf, size_t len, off_t off)
99 {
100 int err;
101
102 err = pwrite(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 = creat(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, off_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) ftruncate(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 off_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 off_t poff, soff, doff, boff;
1046 struct utsname uts;
1047 uint_t nphdrs, nshdrs;
1048
1049 if (ftruncate(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) ftruncate(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 }
Unleashed OS