Pgcore.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <strings.h>
#include <errno.h>
#include <procfs.h>
#include <priv.h>
#include <sys/elf.h>
#include <sys/machelf.h>
#include <sys/sysmacros.h>
#include <sys/systeminfo.h>
#include <sys/proc.h>
#include <sys/utsname.h>
#include <sys/old_procfs.h>
#include "Pcontrol.h"
#include "P32ton.h"
typedef enum {
STR_CTF,
STR_SYMTAB,
STR_DYNSYM,
STR_STRTAB,
STR_DYNSTR,
STR_SHSTRTAB,
STR_NUM
} shstrtype_t;
static const char *shstrtab_data[] = {
".SUNW_ctf",
".symtab",
".dynsym",
".strtab",
".dynstr",
".shstrtab"
};
typedef struct shstrtab {
int sst_ndx[STR_NUM];
int sst_cur;
} shstrtab_t;
typedef struct {
struct ps_prochandle *P;
int pgc_fd;
off64_t *pgc_poff;
off64_t *pgc_soff;
off64_t *pgc_doff;
core_content_t pgc_content;
void *pgc_chunk;
size_t pgc_chunksz;
shstrtab_t pgc_shstrtab;
} pgcore_t;
static void
shstrtab_init(shstrtab_t *s)
{
bzero(&s->sst_ndx, sizeof (s->sst_ndx));
s->sst_cur = 1;
}
static int
shstrtab_ndx(shstrtab_t *s, shstrtype_t type)
{
int ret;
if ((ret = s->sst_ndx[type]) != 0)
return (ret);
ret = s->sst_ndx[type] = s->sst_cur;
s->sst_cur += strlen(shstrtab_data[type]) + 1;
return (ret);
}
static size_t
shstrtab_size(const shstrtab_t *s)
{
return (s->sst_cur);
}
int
Pgcore(struct ps_prochandle *P, const char *fname, core_content_t content)
{
int fd;
int err;
if ((fd = creat64(fname, 0666)) < 0)
return (-1);
if ((err = Pfgcore(P, fd, content)) != 0) {
(void) close(fd);
(void) unlink(fname);
return (err);
}
return (close(fd));
}
/*
* Since we don't want to use the old-school procfs interfaces, we use the
* new-style data structures we already have to construct the old-style
* data structures. We include these data structures in core files for
* backward compatability.
*/
static void
mkprstatus(struct ps_prochandle *P, const lwpstatus_t *lsp,
const lwpsinfo_t *lip, prstatus_t *psp)
{
bzero(psp, sizeof (*psp));
if (lsp->pr_flags & PR_STOPPED)
psp->pr_flags = 0x0001;
if (lsp->pr_flags & PR_ISTOP)
psp->pr_flags = 0x0002;
if (lsp->pr_flags & PR_DSTOP)
psp->pr_flags = 0x0004;
if (lsp->pr_flags & PR_ASLEEP)
psp->pr_flags = 0x0008;
if (lsp->pr_flags & PR_FORK)
psp->pr_flags = 0x0010;
if (lsp->pr_flags & PR_RLC)
psp->pr_flags = 0x0020;
/*
* Note that PR_PTRACE (0x0040) from <sys/old_procfs.h> is never set;
* PR_PCOMPAT corresponds to PR_PTRACE in the newer <sys/procfs.h>.
*/
if (lsp->pr_flags & PR_PCINVAL)
psp->pr_flags = 0x0080;
if (lsp->pr_flags & PR_ISSYS)
psp->pr_flags = 0x0100;
if (lsp->pr_flags & PR_STEP)
psp->pr_flags = 0x0200;
if (lsp->pr_flags & PR_KLC)
psp->pr_flags = 0x0400;
if (lsp->pr_flags & PR_ASYNC)
psp->pr_flags = 0x0800;
if (lsp->pr_flags & PR_PTRACE)
psp->pr_flags = 0x1000;
if (lsp->pr_flags & PR_MSACCT)
psp->pr_flags = 0x2000;
if (lsp->pr_flags & PR_BPTADJ)
psp->pr_flags = 0x4000;
if (lsp->pr_flags & PR_ASLWP)
psp->pr_flags = 0x8000;
psp->pr_why = lsp->pr_why;
psp->pr_what = lsp->pr_what;
psp->pr_info = lsp->pr_info;
psp->pr_cursig = lsp->pr_cursig;
psp->pr_nlwp = P->status.pr_nlwp;
psp->pr_sigpend = P->status.pr_sigpend;
psp->pr_sighold = lsp->pr_lwphold;
psp->pr_altstack = lsp->pr_altstack;
psp->pr_action = lsp->pr_action;
psp->pr_pid = P->status.pr_pid;
psp->pr_ppid = P->status.pr_ppid;
psp->pr_pgrp = P->status.pr_pgid;
psp->pr_sid = P->status.pr_sid;
psp->pr_utime = P->status.pr_utime;
psp->pr_stime = P->status.pr_stime;
psp->pr_cutime = P->status.pr_cutime;
psp->pr_cstime = P->status.pr_cstime;
(void) strncpy(psp->pr_clname, lsp->pr_clname, sizeof (psp->pr_clname));
psp->pr_syscall = lsp->pr_syscall;
psp->pr_nsysarg = lsp->pr_nsysarg;
bcopy(lsp->pr_sysarg, psp->pr_sysarg, sizeof (psp->pr_sysarg));
psp->pr_who = lsp->pr_lwpid;
psp->pr_lwppend = lsp->pr_lwppend;
psp->pr_oldcontext = (ucontext_t *)lsp->pr_oldcontext;
psp->pr_brkbase = (caddr_t)P->status.pr_brkbase;
psp->pr_brksize = P->status.pr_brksize;
psp->pr_stkbase = (caddr_t)P->status.pr_stkbase;
psp->pr_stksize = P->status.pr_stksize;
psp->pr_processor = (short)lip->pr_onpro;
psp->pr_bind = (short)lip->pr_bindpro;
psp->pr_instr = lsp->pr_instr;
bcopy(lsp->pr_reg, psp->pr_reg, sizeof (psp->pr_sysarg));
}
static void
mkprpsinfo(struct ps_prochandle *P, prpsinfo_t *psp)
{
bzero(psp, sizeof (*psp));
psp->pr_state = P->psinfo.pr_lwp.pr_state;
psp->pr_sname = P->psinfo.pr_lwp.pr_sname;
psp->pr_zomb = (psp->pr_state == SZOMB);
psp->pr_nice = P->psinfo.pr_lwp.pr_nice;
psp->pr_flag = P->psinfo.pr_lwp.pr_flag;
psp->pr_uid = P->psinfo.pr_uid;
psp->pr_gid = P->psinfo.pr_gid;
psp->pr_pid = P->psinfo.pr_pid;
psp->pr_ppid = P->psinfo.pr_ppid;
psp->pr_pgrp = P->psinfo.pr_pgid;
psp->pr_sid = P->psinfo.pr_sid;
psp->pr_addr = (caddr_t)P->psinfo.pr_addr;
psp->pr_size = P->psinfo.pr_size;
psp->pr_rssize = P->psinfo.pr_rssize;
psp->pr_wchan = (caddr_t)P->psinfo.pr_lwp.pr_wchan;
psp->pr_start = P->psinfo.pr_start;
psp->pr_time = P->psinfo.pr_time;
psp->pr_pri = P->psinfo.pr_lwp.pr_pri;
psp->pr_oldpri = P->psinfo.pr_lwp.pr_oldpri;
psp->pr_cpu = P->psinfo.pr_lwp.pr_cpu;
psp->pr_ottydev = cmpdev(P->psinfo.pr_ttydev);
psp->pr_lttydev = P->psinfo.pr_ttydev;
(void) strncpy(psp->pr_clname, P->psinfo.pr_lwp.pr_clname,
sizeof (psp->pr_clname));
(void) strncpy(psp->pr_fname, P->psinfo.pr_fname,
sizeof (psp->pr_fname));
bcopy(&P->psinfo.pr_psargs, &psp->pr_psargs,
sizeof (psp->pr_psargs));
psp->pr_syscall = P->psinfo.pr_lwp.pr_syscall;
psp->pr_ctime = P->psinfo.pr_ctime;
psp->pr_bysize = psp->pr_size * PAGESIZE;
psp->pr_byrssize = psp->pr_rssize * PAGESIZE;
psp->pr_argc = P->psinfo.pr_argc;
psp->pr_argv = (char **)P->psinfo.pr_argv;
psp->pr_envp = (char **)P->psinfo.pr_envp;
psp->pr_wstat = P->psinfo.pr_wstat;
psp->pr_pctcpu = P->psinfo.pr_pctcpu;
psp->pr_pctmem = P->psinfo.pr_pctmem;
psp->pr_euid = P->psinfo.pr_euid;
psp->pr_egid = P->psinfo.pr_egid;
psp->pr_aslwpid = 0;
psp->pr_dmodel = P->psinfo.pr_dmodel;
}
#ifdef _LP64
static void
mkprstatus32(struct ps_prochandle *P, const lwpstatus_t *lsp,
const lwpsinfo_t *lip, prstatus32_t *psp)
{
bzero(psp, sizeof (*psp));
if (lsp->pr_flags & PR_STOPPED)
psp->pr_flags = 0x0001;
if (lsp->pr_flags & PR_ISTOP)
psp->pr_flags = 0x0002;
if (lsp->pr_flags & PR_DSTOP)
psp->pr_flags = 0x0004;
if (lsp->pr_flags & PR_ASLEEP)
psp->pr_flags = 0x0008;
if (lsp->pr_flags & PR_FORK)
psp->pr_flags = 0x0010;
if (lsp->pr_flags & PR_RLC)
psp->pr_flags = 0x0020;
/*
* Note that PR_PTRACE (0x0040) from <sys/old_procfs.h> is never set;
* PR_PCOMPAT corresponds to PR_PTRACE in the newer <sys/procfs.h>.
*/
if (lsp->pr_flags & PR_PCINVAL)
psp->pr_flags = 0x0080;
if (lsp->pr_flags & PR_ISSYS)
psp->pr_flags = 0x0100;
if (lsp->pr_flags & PR_STEP)
psp->pr_flags = 0x0200;
if (lsp->pr_flags & PR_KLC)
psp->pr_flags = 0x0400;
if (lsp->pr_flags & PR_ASYNC)
psp->pr_flags = 0x0800;
if (lsp->pr_flags & PR_PTRACE)
psp->pr_flags = 0x1000;
if (lsp->pr_flags & PR_MSACCT)
psp->pr_flags = 0x2000;
if (lsp->pr_flags & PR_BPTADJ)
psp->pr_flags = 0x4000;
if (lsp->pr_flags & PR_ASLWP)
psp->pr_flags = 0x8000;
psp->pr_why = lsp->pr_why;
psp->pr_what = lsp->pr_what;
siginfo_n_to_32(&lsp->pr_info, &psp->pr_info);
psp->pr_cursig = lsp->pr_cursig;
psp->pr_nlwp = P->status.pr_nlwp;
psp->pr_sigpend = P->status.pr_sigpend;
psp->pr_sighold = lsp->pr_lwphold;
stack_n_to_32(&lsp->pr_altstack, &psp->pr_altstack);
sigaction_n_to_32(&lsp->pr_action, &psp->pr_action);
psp->pr_pid = P->status.pr_pid;
psp->pr_ppid = P->status.pr_ppid;
psp->pr_pgrp = P->status.pr_pgid;
psp->pr_sid = P->status.pr_sid;
timestruc_n_to_32(&P->status.pr_utime, &psp->pr_utime);
timestruc_n_to_32(&P->status.pr_stime, &psp->pr_stime);
timestruc_n_to_32(&P->status.pr_cutime, &psp->pr_cutime);
timestruc_n_to_32(&P->status.pr_cstime, &psp->pr_cstime);
(void) strncpy(psp->pr_clname, lsp->pr_clname, sizeof (psp->pr_clname));
psp->pr_syscall = lsp->pr_syscall;
psp->pr_nsysarg = lsp->pr_nsysarg;
bcopy(lsp->pr_sysarg, psp->pr_sysarg,
sizeof (psp->pr_sysarg)); psp->pr_who = lsp->pr_lwpid;
psp->pr_lwppend = lsp->pr_lwppend;
psp->pr_oldcontext = (caddr32_t)lsp->pr_oldcontext;
psp->pr_brkbase = (caddr32_t)P->status.pr_brkbase;
psp->pr_brksize = P->status.pr_brksize;
psp->pr_stkbase = (caddr32_t)P->status.pr_stkbase;
psp->pr_stksize = P->status.pr_stksize;
psp->pr_processor = (short)lip->pr_onpro;
psp->pr_bind = (short)lip->pr_bindpro;
psp->pr_instr = lsp->pr_instr;
bcopy(lsp->pr_reg, psp->pr_reg, sizeof (psp->pr_sysarg));
}
static void
mkprpsinfo32(struct ps_prochandle *P, prpsinfo32_t *psp)
{
bzero(psp, sizeof (*psp));
psp->pr_state = P->psinfo.pr_lwp.pr_state;
psp->pr_sname = P->psinfo.pr_lwp.pr_sname;
psp->pr_zomb = (psp->pr_state == SZOMB);
psp->pr_nice = P->psinfo.pr_lwp.pr_nice;
psp->pr_flag = P->psinfo.pr_lwp.pr_flag;
psp->pr_uid = P->psinfo.pr_uid;
psp->pr_gid = P->psinfo.pr_gid;
psp->pr_pid = P->psinfo.pr_pid;
psp->pr_ppid = P->psinfo.pr_ppid;
psp->pr_pgrp = P->psinfo.pr_pgid;
psp->pr_sid = P->psinfo.pr_sid;
psp->pr_addr = (caddr32_t)P->psinfo.pr_addr;
psp->pr_size = P->psinfo.pr_size;
psp->pr_rssize = P->psinfo.pr_rssize;
psp->pr_wchan = (caddr32_t)P->psinfo.pr_lwp.pr_wchan;
timestruc_n_to_32(&P->psinfo.pr_start, &psp->pr_start);
timestruc_n_to_32(&P->psinfo.pr_time, &psp->pr_time);
psp->pr_pri = P->psinfo.pr_lwp.pr_pri;
psp->pr_oldpri = P->psinfo.pr_lwp.pr_oldpri;
psp->pr_cpu = P->psinfo.pr_lwp.pr_cpu;
psp->pr_ottydev = cmpdev(P->psinfo.pr_ttydev);
psp->pr_lttydev = prcmpldev(P->psinfo.pr_ttydev);
(void) strncpy(psp->pr_clname, P->psinfo.pr_lwp.pr_clname,
sizeof (psp->pr_clname));
(void) strncpy(psp->pr_fname, P->psinfo.pr_fname,
sizeof (psp->pr_fname));
bcopy(&P->psinfo.pr_psargs, &psp->pr_psargs,
sizeof (psp->pr_psargs));
psp->pr_syscall = P->psinfo.pr_lwp.pr_syscall;
timestruc_n_to_32(&P->psinfo.pr_ctime, &psp->pr_ctime);
psp->pr_bysize = psp->pr_size * PAGESIZE;
psp->pr_byrssize = psp->pr_rssize * PAGESIZE;
psp->pr_argc = P->psinfo.pr_argc;
psp->pr_argv = (caddr32_t)P->psinfo.pr_argv;
psp->pr_envp = (caddr32_t)P->psinfo.pr_envp;
psp->pr_wstat = P->psinfo.pr_wstat;
psp->pr_pctcpu = P->psinfo.pr_pctcpu;
psp->pr_pctmem = P->psinfo.pr_pctmem;
psp->pr_euid = P->psinfo.pr_euid;
psp->pr_egid = P->psinfo.pr_egid;
psp->pr_aslwpid = 0;
psp->pr_dmodel = P->psinfo.pr_dmodel;
}
#endif /* _LP64 */
static int
write_note(int fd, uint_t type, const void *desc, size_t descsz, off64_t *offp)
{
/*
* Note headers are the same regardless of the data model of the
* ELF file; we arbitrarily use Elf64_Nhdr here.
*/
struct {
Elf64_Nhdr nhdr;
char name[8];
} n;
bzero(&n, sizeof (n));
bcopy("CORE", n.name, 4);
n.nhdr.n_type = type;
n.nhdr.n_namesz = 5;
n.nhdr.n_descsz = roundup(descsz, 4);
if (pwrite64(fd, &n, sizeof (n), *offp) != sizeof (n))
return (-1);
*offp += sizeof (n);
if (pwrite64(fd, desc, n.nhdr.n_descsz, *offp) != n.nhdr.n_descsz)
return (-1);
*offp += n.nhdr.n_descsz;
return (0);
}
static int
old_per_lwp(void *data, const lwpstatus_t *lsp, const lwpsinfo_t *lip)
{
pgcore_t *pgc = data;
struct ps_prochandle *P = pgc->P;
/*
* Legacy core files don't contain information about zombie LWPs.
* We use Plwp_iter_all() so that we get the lwpsinfo_t structure
* more cheaply.
*/
if (lsp == NULL)
return (0);
if (P->status.pr_dmodel == PR_MODEL_NATIVE) {
prstatus_t prstatus;
mkprstatus(P, lsp, lip, &prstatus);
if (write_note(pgc->pgc_fd, NT_PRSTATUS, &prstatus,
sizeof (prstatus_t), pgc->pgc_doff) != 0)
return (0);
if (write_note(pgc->pgc_fd, NT_PRFPREG, &lsp->pr_fpreg,
sizeof (prfpregset_t), pgc->pgc_doff) != 0)
return (1);
#ifdef _LP64
} else {
prstatus32_t pr32;
prfpregset32_t pf32;
mkprstatus32(P, lsp, lip, &pr32);
if (write_note(pgc->pgc_fd, NT_PRSTATUS, &pr32,
sizeof (prstatus32_t), pgc->pgc_doff) != 0)
return (1);
prfpregset_n_to_32(&lsp->pr_fpreg, &pf32);
if (write_note(pgc->pgc_fd, NT_PRFPREG, &pf32,
sizeof (prfpregset32_t), pgc->pgc_doff) != 0)
return (1);
#endif /* _LP64 */
}
#ifdef sparc
{
prxregset_t xregs;
if (Plwp_getxregs(P, lsp->pr_lwpid, &xregs) == 0 &&
write_note(pgc->pgc_fd, NT_PRXREG, &xregs,
sizeof (prxregset_t), pgc->pgc_doff) != 0)
return (1);
}
#endif /* sparc */
return (0);
}
static int
new_per_lwp(void *data, const lwpstatus_t *lsp, const lwpsinfo_t *lip)
{
pgcore_t *pgc = data;
struct ps_prochandle *P = pgc->P;
/*
* If lsp is NULL this indicates that this is a zombie LWP in
* which case we dump only the lwpsinfo_t structure and none of
* the other ancillary LWP state data.
*/
if (P->status.pr_dmodel == PR_MODEL_NATIVE) {
if (write_note(pgc->pgc_fd, NT_LWPSINFO, lip,
sizeof (lwpsinfo_t), pgc->pgc_doff) != 0)
return (1);
if (lsp == NULL)
return (0);
if (write_note(pgc->pgc_fd, NT_LWPSTATUS, lsp,
sizeof (lwpstatus_t), pgc->pgc_doff) != 0)
return (1);
#ifdef _LP64
} else {
lwpsinfo32_t li32;
lwpstatus32_t ls32;
lwpsinfo_n_to_32(lip, &li32);
if (write_note(pgc->pgc_fd, NT_LWPSINFO, &li32,
sizeof (lwpsinfo32_t), pgc->pgc_doff) != 0)
return (1);
if (lsp == NULL)
return (0);
lwpstatus_n_to_32(lsp, &ls32);
if (write_note(pgc->pgc_fd, NT_LWPSTATUS, &ls32,
sizeof (lwpstatus32_t), pgc->pgc_doff) != 0)
return (1);
#endif /* _LP64 */
}
#ifdef sparc
{
prxregset_t xregs;
gwindows_t gwins;
size_t size;
if (Plwp_getxregs(P, lsp->pr_lwpid, &xregs) == 0) {
if (write_note(pgc->pgc_fd, NT_PRXREG, &xregs,
sizeof (prxregset_t), pgc->pgc_doff) != 0)
return (1);
}
if (Plwp_getgwindows(P, lsp->pr_lwpid, &gwins) == 0 &&
gwins.wbcnt > 0) {
size = sizeof (gwins) - sizeof (gwins.wbuf) +
gwins.wbcnt * sizeof (gwins.wbuf[0]);
if (write_note(pgc->pgc_fd, NT_GWINDOWS, &gwins, size,
pgc->pgc_doff) != 0)
return (1);
}
}
#ifdef __sparcv9
if (P->status.pr_dmodel == PR_MODEL_LP64) {
asrset_t asrs;
if (Plwp_getasrs(P, lsp->pr_lwpid, asrs) == 0) {
if (write_note(pgc->pgc_fd, NT_ASRS, &asrs,
sizeof (asrset_t), pgc->pgc_doff) != 0)
return (1);
}
}
#endif /* __sparcv9 */
#endif /* sparc */
return (0);
}
static uint_t
count_sections(pgcore_t *pgc)
{
struct ps_prochandle *P = pgc->P;
file_info_t *fptr;
uint_t cnt;
uint_t nshdrs = 0;
if (!(pgc->pgc_content & (CC_CONTENT_CTF | CC_CONTENT_SYMTAB)))
return (0);
fptr = list_next(&P->file_head);
for (cnt = P->num_files; cnt > 0; cnt--, fptr = list_next(fptr)) {
int hit_symtab = 0;
Pbuild_file_symtab(P, fptr);
if ((pgc->pgc_content & CC_CONTENT_CTF) &&
Pbuild_file_ctf(P, fptr) != NULL) {
sym_tbl_t *sym;
nshdrs++;
if (fptr->file_ctf_dyn) {
sym = &fptr->file_dynsym;
} else {
sym = &fptr->file_symtab;
hit_symtab = 1;
}
if (sym->sym_data != NULL && sym->sym_symn != 0 &&
sym->sym_strs != NULL)
nshdrs += 2;
}
if ((pgc->pgc_content & CC_CONTENT_SYMTAB) && !hit_symtab &&
fptr->file_symtab.sym_data != NULL &&
fptr->file_symtab.sym_symn != 0 &&
fptr->file_symtab.sym_strs != NULL) {
nshdrs += 2;
}
}
return (nshdrs == 0 ? 0 : nshdrs + 2);
}
static int
write_shdr(pgcore_t *pgc, shstrtype_t name, uint_t type, ulong_t flags,
uintptr_t addr, ulong_t offset, size_t size, uint_t link, uint_t info,
uintptr_t addralign, uintptr_t entsize)
{
if (pgc->P->status.pr_dmodel == PR_MODEL_ILP32) {
Elf32_Shdr shdr;
bzero(&shdr, sizeof (shdr));
shdr.sh_name = shstrtab_ndx(&pgc->pgc_shstrtab, name);
shdr.sh_type = type;
shdr.sh_flags = flags;
shdr.sh_addr = (Elf32_Addr)addr;
shdr.sh_offset = offset;
shdr.sh_size = size;
shdr.sh_link = link;
shdr.sh_info = info;
shdr.sh_addralign = addralign;
shdr.sh_entsize = entsize;
if (pwrite64(pgc->pgc_fd, &shdr, sizeof (shdr),
*pgc->pgc_soff) != sizeof (shdr))
return (-1);
*pgc->pgc_soff += sizeof (shdr);
#ifdef _LP64
} else {
Elf64_Shdr shdr;
bzero(&shdr, sizeof (shdr));
shdr.sh_name = shstrtab_ndx(&pgc->pgc_shstrtab, name);
shdr.sh_type = type;
shdr.sh_flags = flags;
shdr.sh_addr = addr;
shdr.sh_offset = offset;
shdr.sh_size = size;
shdr.sh_link = link;
shdr.sh_info = info;
shdr.sh_addralign = addralign;
shdr.sh_entsize = entsize;
if (pwrite64(pgc->pgc_fd, &shdr, sizeof (shdr),
*pgc->pgc_soff) != sizeof (shdr))
return (-1);
*pgc->pgc_soff += sizeof (shdr);
#endif /* _LP64 */
}
return (0);
}
static int
dump_symtab(pgcore_t *pgc, file_info_t *fptr, uint_t index, int dynsym)
{
sym_tbl_t *sym = dynsym ? &fptr->file_dynsym : &fptr->file_symtab;
shstrtype_t symname = dynsym ? STR_DYNSYM : STR_SYMTAB;
shstrtype_t strname = dynsym ? STR_DYNSTR : STR_STRTAB;
uint_t symtype = dynsym ? SHT_DYNSYM : SHT_SYMTAB;
size_t size;
uintptr_t addr = fptr->file_map->map_pmap.pr_vaddr;
if (sym->sym_data == NULL || sym->sym_symn == 0 ||
sym->sym_strs == NULL)
return (0);
size = sym->sym_hdr.sh_size;
if (pwrite64(pgc->pgc_fd, sym->sym_data->d_buf, size,
*pgc->pgc_doff) != size)
return (-1);
if (write_shdr(pgc, symname, symtype, 0, addr, *pgc->pgc_doff, size,
index + 1, sym->sym_hdr.sh_info, sym->sym_hdr.sh_addralign,
sym->sym_hdr.sh_entsize) != 0)
return (-1);
*pgc->pgc_doff += roundup(size, 8);
size = sym->sym_strhdr.sh_size;
if (pwrite64(pgc->pgc_fd, sym->sym_strs, size, *pgc->pgc_doff) != size)
return (-1);
if (write_shdr(pgc, strname, SHT_STRTAB, SHF_STRINGS, addr,
*pgc->pgc_doff, size, 0, 0, 1, 0) != 0)
return (-1);
*pgc->pgc_doff += roundup(size, 8);
return (0);
}
static int
dump_sections(pgcore_t *pgc)
{
struct ps_prochandle *P = pgc->P;
file_info_t *fptr;
uint_t cnt;
uint_t index = 1;
if (!(pgc->pgc_content & (CC_CONTENT_CTF | CC_CONTENT_SYMTAB)))
return (0);
fptr = list_next(&P->file_head);
for (cnt = P->num_files; cnt > 0; cnt--, fptr = list_next(fptr)) {
int hit_symtab = 0;
Pbuild_file_symtab(P, fptr);
if ((pgc->pgc_content & CC_CONTENT_CTF) &&
Pbuild_file_ctf(P, fptr) != NULL) {
sym_tbl_t *sym;
uint_t dynsym;
uint_t symindex = 0;
/*
* Write the symtab out first so we can correctly
* set the sh_link field in the CTF section header.
* symindex will be 0 if there is no corresponding
* symbol table section.
*/
if (fptr->file_ctf_dyn) {
sym = &fptr->file_dynsym;
dynsym = 1;
} else {
sym = &fptr->file_symtab;
dynsym = 0;
hit_symtab = 1;
}
if (sym->sym_data != NULL && sym->sym_symn != 0 &&
sym->sym_strs != NULL) {
symindex = index;
if (dump_symtab(pgc, fptr, index, dynsym) != 0)
return (-1);
index += 2;
}
/*
* Write the CTF data that we've read out of the
* file itself into the core file.
*/
if (pwrite64(pgc->pgc_fd, fptr->file_ctf_buf,
fptr->file_ctf_size, *pgc->pgc_doff) !=
fptr->file_ctf_size)
return (-1);
if (write_shdr(pgc, STR_CTF, SHT_PROGBITS, 0,
fptr->file_map->map_pmap.pr_vaddr, *pgc->pgc_doff,
fptr->file_ctf_size, symindex, 0, 4, 0) != 0)
return (-1);
index++;
*pgc->pgc_doff += roundup(fptr->file_ctf_size, 8);
}
if ((pgc->pgc_content & CC_CONTENT_SYMTAB) && !hit_symtab &&
fptr->file_symtab.sym_data != NULL &&
fptr->file_symtab.sym_symn != 0 &&
fptr->file_symtab.sym_strs != NULL) {
if (dump_symtab(pgc, fptr, index, 0) != 0)
return (-1);
index += 2;
}
}
return (0);
}
/*ARGSUSED*/
static int
dump_map(void *data, const prmap_t *pmp, const char *name)
{
pgcore_t *pgc = data;
struct ps_prochandle *P = pgc->P;
#ifdef _LP64
Elf64_Phdr phdr;
#else
Elf32_Phdr phdr;
#endif
size_t n;
bzero(&phdr, sizeof (phdr));
phdr.p_type = PT_LOAD;
phdr.p_vaddr = pmp->pr_vaddr;
phdr.p_memsz = pmp->pr_size;
if (pmp->pr_mflags & MA_READ)
phdr.p_flags |= PF_R;
if (pmp->pr_mflags & MA_WRITE)
phdr.p_flags |= PF_W;
if (pmp->pr_mflags & MA_EXEC)
phdr.p_flags |= PF_X;
if (pmp->pr_vaddr + pmp->pr_size > P->status.pr_stkbase &&
pmp->pr_vaddr < P->status.pr_stkbase + P->status.pr_stksize) {
if (!(pgc->pgc_content & CC_CONTENT_STACK))
goto exclude;
} else if ((pmp->pr_mflags & MA_ANON) &&
pmp->pr_vaddr + pmp->pr_size > P->status.pr_brkbase &&
pmp->pr_vaddr < P->status.pr_brkbase + P->status.pr_brksize) {
if (!(pgc->pgc_content & CC_CONTENT_HEAP))
goto exclude;
} else if (pmp->pr_mflags & MA_ISM) {
if (pmp->pr_mflags & MA_NORESERVE) {
if (!(pgc->pgc_content & CC_CONTENT_DISM))
goto exclude;
} else {
if (!(pgc->pgc_content & CC_CONTENT_ISM))
goto exclude;
}
} else if (pmp->pr_mflags & MA_SHM) {
if (!(pgc->pgc_content & CC_CONTENT_SHM))
goto exclude;
} else if (pmp->pr_mflags & MA_SHARED) {
if (pmp->pr_mflags & MA_ANON) {
if (!(pgc->pgc_content & CC_CONTENT_SHANON))
goto exclude;
} else {
if (!(pgc->pgc_content & CC_CONTENT_SHFILE))
goto exclude;
}
} else if (pmp->pr_mflags & MA_ANON) {
if (!(pgc->pgc_content & CC_CONTENT_ANON))
goto exclude;
} else if (phdr.p_flags == (PF_R | PF_X)) {
if (!(pgc->pgc_content & CC_CONTENT_TEXT))
goto exclude;
} else if (phdr.p_flags == PF_R) {
if (!(pgc->pgc_content & CC_CONTENT_RODATA))
goto exclude;
} else {
if (!(pgc->pgc_content & CC_CONTENT_DATA))
goto exclude;
}
n = 0;
while (n < pmp->pr_size) {
size_t csz = MIN(pmp->pr_size - n, pgc->pgc_chunksz);
/*
* If we can't read out part of the victim's address
* space for some reason ignore that failure and try to
* emit a partial core file without that mapping's data.
* As in the kernel, we mark these failures with the
* PF_SUNW_FAILURE flag and store the errno where the
* mapping would have been.
*/
if (Pread(P, pgc->pgc_chunk, csz, pmp->pr_vaddr + n) != csz ||
pwrite64(pgc->pgc_fd, pgc->pgc_chunk, csz,
*pgc->pgc_doff + n) != csz) {
int err = errno;
(void) pwrite64(pgc->pgc_fd, &err, sizeof (err),
*pgc->pgc_doff);
*pgc->pgc_doff += roundup(sizeof (err), 8);
phdr.p_flags |= PF_SUNW_FAILURE;
(void) ftruncate64(pgc->pgc_fd, *pgc->pgc_doff);
goto exclude;
}
n += csz;
}
phdr.p_offset = *pgc->pgc_doff;
phdr.p_filesz = pmp->pr_size;
*pgc->pgc_doff += roundup(phdr.p_filesz, 8);
exclude:
if (P->status.pr_dmodel == PR_MODEL_NATIVE) {
if (pwrite64(pgc->pgc_fd, &phdr, sizeof (phdr),
*pgc->pgc_poff) != sizeof (phdr))
return (1);
*pgc->pgc_poff += sizeof (phdr);
#ifdef _LP64
} else {
Elf32_Phdr phdr32;
bzero(&phdr32, sizeof (phdr32));
phdr32.p_type = phdr.p_type;
phdr32.p_vaddr = (Elf32_Addr)phdr.p_vaddr;
phdr32.p_memsz = (Elf32_Word)phdr.p_memsz;
phdr32.p_flags = phdr.p_flags;
phdr32.p_offset = (Elf32_Off)phdr.p_offset;
phdr32.p_filesz = (Elf32_Word)phdr.p_filesz;
if (pwrite64(pgc->pgc_fd, &phdr32, sizeof (phdr32),
*pgc->pgc_poff) != sizeof (phdr32))
return (1);
*pgc->pgc_poff += sizeof (phdr32);
#endif /* _LP64 */
}
return (0);
}
int
write_shstrtab(struct ps_prochandle *P, pgcore_t *pgc)
{
off64_t off = *pgc->pgc_doff;
size_t size = 0;
shstrtab_t *s = &pgc->pgc_shstrtab;
int i, ndx;
if (shstrtab_size(s) == 1)
return (0);
/*
* Preemptively stick the name of the shstrtab in the string table.
*/
(void) shstrtab_ndx(&pgc->pgc_shstrtab, STR_SHSTRTAB);
size = shstrtab_size(s);
if (pwrite64(pgc->pgc_fd, "", 1, off) != 1)
return (1);
/*
* Dump all the strings that we used being sure we include the
* terminating null character.
*/
for (i = 0; i < STR_NUM; i++) {
if ((ndx = s->sst_ndx[i]) != 0) {
const char *str = shstrtab_data[i];
size_t len = strlen(str) + 1;
if (pwrite64(pgc->pgc_fd, str, len, off + ndx) != len)
return (1);
}
}
if (P->status.pr_dmodel == PR_MODEL_ILP32) {
Elf32_Shdr shdr;
bzero(&shdr, sizeof (shdr));
shdr.sh_name = shstrtab_ndx(&pgc->pgc_shstrtab, STR_SHSTRTAB);
shdr.sh_size = size;
shdr.sh_offset = *pgc->pgc_doff;
shdr.sh_addralign = 1;
shdr.sh_flags = SHF_STRINGS;
shdr.sh_type = SHT_STRTAB;
if (pwrite64(pgc->pgc_fd, &shdr, sizeof (shdr),
*pgc->pgc_soff) != sizeof (shdr))
return (1);
*pgc->pgc_soff += sizeof (shdr);
#ifdef _LP64
} else {
Elf64_Shdr shdr;
bzero(&shdr, sizeof (shdr));
shdr.sh_name = shstrtab_ndx(&pgc->pgc_shstrtab, STR_SHSTRTAB);
shdr.sh_size = size;
shdr.sh_offset = *pgc->pgc_doff;
shdr.sh_addralign = 1;
shdr.sh_flags = SHF_STRINGS;
shdr.sh_type = SHT_STRTAB;
if (pwrite64(pgc->pgc_fd, &shdr, sizeof (shdr),
*pgc->pgc_soff) != sizeof (shdr))
return (1);
*pgc->pgc_soff += sizeof (shdr);
#endif /* _LP64 */
}
*pgc->pgc_doff += roundup(size, 8);
return (0);
}
/*
* Don't explicity stop the process; that's up to the consumer.
*/
int
Pfgcore(struct ps_prochandle *P, int fd, core_content_t content)
{
char plat[SYS_NMLN];
char zonename[ZONENAME_MAX];
int platlen = -1;
pgcore_t pgc;
off64_t poff, soff, doff, boff;
struct utsname uts;
uint_t nphdrs, nshdrs;
if (ftruncate64(fd, 0) != 0)
return (-1);
if (content == CC_CONTENT_INVALID) {
errno = EINVAL;
return (-1);
}
/*
* Cache the mappings and other useful data.
*/
(void) Prd_agent(P);
(void) Ppsinfo(P);
pgc.P = P;
pgc.pgc_fd = fd;
pgc.pgc_poff = &poff;
pgc.pgc_soff = &soff;
pgc.pgc_doff = &doff;
pgc.pgc_content = content;
pgc.pgc_chunksz = PAGESIZE;
if ((pgc.pgc_chunk = malloc(pgc.pgc_chunksz)) == NULL)
return (-1);
shstrtab_init(&pgc.pgc_shstrtab);
/*
* There are two PT_NOTE program headers for ancillary data, and
* one for each mapping.
*/
nphdrs = 2 + P->map_count;
nshdrs = count_sections(&pgc);
(void) Pplatform(P, plat, sizeof (plat));
platlen = strlen(plat) + 1;
Preadauxvec(P);
(void) Puname(P, &uts);
if (Pzonename(P, zonename, sizeof (zonename)) == NULL)
zonename[0] = '\0';
/*
* Set up the ELF header.
*/
if (P->status.pr_dmodel == PR_MODEL_ILP32) {
Elf32_Ehdr ehdr;
bzero(&ehdr, sizeof (ehdr));
ehdr.e_ident[EI_MAG0] = ELFMAG0;
ehdr.e_ident[EI_MAG1] = ELFMAG1;
ehdr.e_ident[EI_MAG2] = ELFMAG2;
ehdr.e_ident[EI_MAG3] = ELFMAG3;
ehdr.e_type = ET_CORE;
ehdr.e_ident[EI_CLASS] = ELFCLASS32;
#if defined(__sparc)
ehdr.e_machine = EM_SPARC;
ehdr.e_ident[EI_DATA] = ELFDATA2MSB;
#elif defined(__i386) || defined(__amd64)
ehdr.e_machine = EM_386;
ehdr.e_ident[EI_DATA] = ELFDATA2LSB;
#else
#error "unknown machine type"
#endif
ehdr.e_ident[EI_VERSION] = EV_CURRENT;
ehdr.e_version = EV_CURRENT;
ehdr.e_ehsize = sizeof (ehdr);
ehdr.e_phentsize = sizeof (Elf32_Phdr);
ehdr.e_phnum = (unsigned short)nphdrs;
ehdr.e_phoff = ehdr.e_ehsize;
if (nshdrs != 0) {
ehdr.e_shentsize = sizeof (Elf32_Shdr);
ehdr.e_shnum = (unsigned short)nshdrs;
ehdr.e_shoff = ehdr.e_phoff +
ehdr.e_phentsize * ehdr.e_phnum;
ehdr.e_shstrndx = nshdrs - 1;
}
if (pwrite64(fd, &ehdr, sizeof (ehdr), 0) != sizeof (ehdr))
goto err;
poff = ehdr.e_phoff;
soff = ehdr.e_shoff + ehdr.e_shentsize;
doff = boff = ehdr.e_ehsize +
ehdr.e_phentsize * ehdr.e_phnum +
ehdr.e_shentsize * ehdr.e_shnum;
#ifdef _LP64
} else {
Elf64_Ehdr ehdr;
bzero(&ehdr, sizeof (ehdr));
ehdr.e_ident[EI_MAG0] = ELFMAG0;
ehdr.e_ident[EI_MAG1] = ELFMAG1;
ehdr.e_ident[EI_MAG2] = ELFMAG2;
ehdr.e_ident[EI_MAG3] = ELFMAG3;
ehdr.e_type = ET_CORE;
ehdr.e_ident[EI_CLASS] = ELFCLASS64;
#if defined(__sparc)
ehdr.e_machine = EM_SPARCV9;
ehdr.e_ident[EI_DATA] = ELFDATA2MSB;
#elif defined(__i386) || defined(__amd64)
ehdr.e_machine = EM_AMD64;
ehdr.e_ident[EI_DATA] = ELFDATA2LSB;
#else
#error "unknown machine type"
#endif
ehdr.e_ident[EI_VERSION] = EV_CURRENT;
ehdr.e_version = EV_CURRENT;
ehdr.e_ehsize = sizeof (ehdr);
ehdr.e_phentsize = sizeof (Elf64_Phdr);
ehdr.e_phnum = (unsigned short)nphdrs;
ehdr.e_phoff = ehdr.e_ehsize;
if (nshdrs != 0) {
ehdr.e_shentsize = sizeof (Elf64_Shdr);
ehdr.e_shnum = (unsigned short)nshdrs;
ehdr.e_shoff = ehdr.e_phoff +
ehdr.e_phentsize * ehdr.e_phnum;
ehdr.e_shstrndx = nshdrs - 1;
}
if (pwrite64(fd, &ehdr, sizeof (ehdr), 0) != sizeof (ehdr))
goto err;
poff = ehdr.e_phoff;
soff = ehdr.e_shoff + ehdr.e_shentsize;
doff = boff = sizeof (ehdr) +
ehdr.e_phentsize * ehdr.e_phnum +
ehdr.e_shentsize * ehdr.e_shnum;
#endif /* _LP64 */
}
/*
* Construct the old-style note header and section.
*/
if (P->status.pr_dmodel == PR_MODEL_NATIVE) {
prpsinfo_t prpsinfo;
mkprpsinfo(P, &prpsinfo);
if (write_note(fd, NT_PRPSINFO, &prpsinfo, sizeof (prpsinfo_t),
&doff) != 0) {
goto err;
}
if (write_note(fd, NT_AUXV, P->auxv,
P->nauxv * sizeof (P->auxv[0]), &doff) != 0) {
goto err;
}
#ifdef _LP64
} else {
prpsinfo32_t pi32;
auxv32_t *av32;
size_t size = sizeof (auxv32_t) * P->nauxv;
int i;
mkprpsinfo32(P, &pi32);
if (write_note(fd, NT_PRPSINFO, &pi32, sizeof (prpsinfo32_t),
&doff) != 0) {
goto err;
}
if ((av32 = malloc(size)) == NULL)
goto err;
for (i = 0; i < P->nauxv; i++) {
auxv_n_to_32(&P->auxv[i], &av32[i]);
}
if (write_note(fd, NT_AUXV, av32, size, &doff) != 0) {
free(av32);
goto err;
}
free(av32);
#endif /* _LP64 */
}
if (write_note(fd, NT_PLATFORM, plat, platlen, &doff) != 0)
goto err;
if (Plwp_iter_all(P, old_per_lwp, &pgc) != 0)
goto err;
if (P->status.pr_dmodel == PR_MODEL_ILP32) {
Elf32_Phdr phdr;
bzero(&phdr, sizeof (phdr));
phdr.p_type = PT_NOTE;
phdr.p_flags = PF_R;
phdr.p_offset = (Elf32_Off)boff;
phdr.p_filesz = doff - boff;
boff = doff;
if (pwrite64(fd, &phdr, sizeof (phdr), poff) != sizeof (phdr))
goto err;
poff += sizeof (phdr);
#ifdef _LP64
} else {
Elf64_Phdr phdr;
bzero(&phdr, sizeof (phdr));
phdr.p_type = PT_NOTE;
phdr.p_flags = PF_R;
phdr.p_offset = boff;
phdr.p_filesz = doff - boff;
boff = doff;
if (pwrite64(fd, &phdr, sizeof (phdr), poff) != sizeof (phdr))
goto err;
poff += sizeof (phdr);
#endif /* _LP64 */
}
/*
* Construct the new-style note header and section.
*/
if (P->status.pr_dmodel == PR_MODEL_NATIVE) {
if (write_note(fd, NT_PSINFO, &P->psinfo, sizeof (psinfo_t),
&doff) != 0) {
goto err;
}
if (write_note(fd, NT_PSTATUS, &P->status, sizeof (pstatus_t),
&doff) != 0) {
goto err;
}
if (write_note(fd, NT_AUXV, P->auxv,
P->nauxv * sizeof (P->auxv[0]), &doff) != 0) {
goto err;
}
#ifdef _LP64
} else {
psinfo32_t pi32;
pstatus32_t ps32;
auxv32_t *av32;
size_t size = sizeof (auxv32_t) * P->nauxv;
int i;
psinfo_n_to_32(&P->psinfo, &pi32);
if (write_note(fd, NT_PSINFO, &pi32, sizeof (psinfo32_t),
&doff) != 0) {
goto err;
}
pstatus_n_to_32(&P->status, &ps32);
if (write_note(fd, NT_PSTATUS, &ps32, sizeof (pstatus32_t),
&doff) != 0) {
goto err;
}
if ((av32 = malloc(size)) == NULL)
goto err;
for (i = 0; i < P->nauxv; i++) {
auxv_n_to_32(&P->auxv[i], &av32[i]);
}
if (write_note(fd, NT_AUXV, av32, size, &doff) != 0) {
free(av32);
goto err;
}
free(av32);
#endif /* _LP64 */
}
if (write_note(fd, NT_PLATFORM, plat, platlen, &doff) != 0 ||
write_note(fd, NT_UTSNAME, &uts, sizeof (uts), &doff) != 0 ||
write_note(fd, NT_CONTENT, &content, sizeof (content), &doff) != 0)
goto err;
{
prcred_t cred, *cp;
size_t size = sizeof (prcred_t);
if (Pcred(P, &cred, 0) != 0)
goto err;
if (cred.pr_ngroups > 0)
size += sizeof (gid_t) * (cred.pr_ngroups - 1);
if ((cp = malloc(size)) == NULL)
goto err;
if (Pcred(P, cp, cred.pr_ngroups) != 0 ||
write_note(fd, NT_PRCRED, cp, size, &doff) != 0) {
free(cp);
goto err;
}
free(cp);
}
{
prpriv_t *ppriv;
const priv_impl_info_t *pinfo;
size_t pprivsz, pinfosz;
if ((ppriv = proc_get_priv(P->pid)) == NULL)
goto err;
pprivsz = PRIV_PRPRIV_SIZE(ppriv);
if (write_note(fd, NT_PRPRIV, ppriv, pprivsz, &doff) != 0) {
free(ppriv);
goto err;
}
free(ppriv);
if ((pinfo = getprivimplinfo()) == NULL)
goto err;
pinfosz = PRIV_IMPL_INFO_SIZE(pinfo);
if (write_note(fd, NT_PRPRIVINFO, pinfo, pinfosz, &doff) != 0)
goto err;
}
if (write_note(fd, NT_ZONENAME, zonename, strlen(zonename) + 1,
&doff) != 0)
goto err;
#if defined(__i386) || defined(__amd64)
/* CSTYLED */
{
struct ssd *ldtp;
size_t size;
int nldt;
nldt = Pldt(P, NULL, 0);
size = sizeof (struct ssd) * nldt;
if ((ldtp = malloc(size)) == NULL)
goto err;
if (Pldt(P, ldtp, nldt) == -1 ||
write_note(fd, NT_LDT, ldtp, size, &doff) != 0) {
free(ldtp);
goto err;
}
free(ldtp);
}
#endif /* __i386 || __amd64 */
if (Plwp_iter_all(P, new_per_lwp, &pgc) != 0)
goto err;
if (P->status.pr_dmodel == PR_MODEL_ILP32) {
Elf32_Phdr phdr;
bzero(&phdr, sizeof (phdr));
phdr.p_type = PT_NOTE;
phdr.p_flags = PF_R;
phdr.p_offset = (Elf32_Off)boff;
phdr.p_filesz = doff - boff;
boff = doff;
if (pwrite64(fd, &phdr, sizeof (phdr), poff) != sizeof (phdr))
goto err;
poff += sizeof (phdr);
#ifdef _LP64
} else {
Elf64_Phdr phdr;
bzero(&phdr, sizeof (phdr));
phdr.p_type = PT_NOTE;
phdr.p_flags = PF_R;
phdr.p_offset = boff;
phdr.p_filesz = doff - boff;
boff = doff;
if (pwrite64(fd, &phdr, sizeof (phdr), poff) != sizeof (phdr))
goto err;
poff += sizeof (phdr);
#endif /* _LP64 */
}
/*
* Construct the headers for each mapping and write out its data
* if the content parameter indicates that it should be present
* in the core file.
*/
if (Pmapping_iter(P, dump_map, &pgc) != 0)
goto err;
if (dump_sections(&pgc) != 0)
goto err;
if (write_shstrtab(P, &pgc) != 0)
goto err;
free(pgc.pgc_chunk);
return (0);
err:
/*
* Wipe out anything we may have written if there was an error.
*/
(void) ftruncate64(fd, 0);
free(pgc.pgc_chunk);
return (-1);
}
static const char *content_str[] = {
"stack", /* CC_CONTENT_STACK */
"heap", /* CC_CONTENT_HEAP */
"shfile", /* CC_CONTENT_SHFILE */
"shanon", /* CC_CONTENT_SHANON */
"text", /* CC_CONTENT_TEXT */
"data", /* CC_CONTENT_DATA */
"rodata", /* CC_CONTENT_RODATA */
"anon", /* CC_CONTENT_ANON */
"shm", /* CC_CONTENT_SHM */
"ism", /* CC_CONTENT_ISM */
"dism", /* CC_CONTENT_DISM */
"ctf", /* CC_CONTENT_CTF */
"symtab", /* CC_CONTENT_SYMTAB */
};
static uint_t ncontent_str = sizeof (content_str) / sizeof (content_str[0]);
#define STREQ(a, b, n) (strlen(b) == (n) && strncmp(a, b, n) == 0)
int
proc_str2content(const char *str, core_content_t *cp)
{
const char *cur = str;
int add = 1;
core_content_t mask, content = 0;
for (;;) {
for (cur = str; isalpha(*cur); cur++)
continue;
if (STREQ(str, "default", cur - str)) {
mask = CC_CONTENT_DEFAULT;
} else if (STREQ(str, "all", cur - str)) {
mask = CC_CONTENT_ALL;
} else if (STREQ(str, "none", cur - str)) {
mask = 0;
} else {
int i = 0;
while (!STREQ(str, content_str[i], cur - str)) {
i++;
if (i >= ncontent_str)
return (-1);
}
mask = (core_content_t)1 << i;
}
if (add)
content |= mask;
else
content &= ~mask;
switch (*cur) {
case '\0':
*cp = content;
return (0);
case '+':
add = 1;
break;
case '-':
add = 0;
break;
default:
return (-1);
}
str = cur + 1;
}
}
static int
popc(core_content_t x)
{
int i;
for (i = 0; x != 0; i++)
x &= x - 1;
return (i);
}
int
proc_content2str(core_content_t content, char *buf, size_t size)
{
int nonecnt, defcnt, allcnt;
core_content_t mask, bit;
int first;
uint_t index;
size_t n, tot = 0;
if (content == 0)
return ((int)strlcpy(buf, "none", size));
if (content & ~CC_CONTENT_ALL)
return ((int)strlcpy(buf, "<invalid>", size));
nonecnt = popc(content);
defcnt = 1 + popc(content ^ CC_CONTENT_DEFAULT);
allcnt = 1 + popc(content ^ CC_CONTENT_ALL);
if (defcnt <= nonecnt && defcnt <= allcnt) {
mask = content ^ CC_CONTENT_DEFAULT;
first = 0;
tot += (n = strlcpy(buf, "default", size));
if (n > size)
n = size;
buf += n;
size -= n;
} else if (allcnt < nonecnt) {
mask = content ^ CC_CONTENT_ALL;
first = 0;
tot += (n = strlcpy(buf, "all", size));
if (n > size)
n = size;
buf += n;
size -= n;
} else {
mask = content;
first = 1;
}
while (mask != 0) {
bit = mask ^ (mask & (mask - 1));
if (!first) {
if (size > 1) {
*buf = (bit & content) ? '+' : '-';
buf++;
size--;
}
tot++;
}
index = popc(bit - 1);
tot += (n = strlcpy(buf, content_str[index], size));
if (n > size)
n = size;
buf += n;
size -= n;
mask ^= bit;
first = 0;
}
return ((int)tot);
}