static void _cmdline_process(int argc, char *const *argv) {
int opt = 0;
while ((opt = getopt(argc, argv, "frRSu:g:i:o:e:p:")) != -1) {
if (opt == 'u') {
if (!strisnum(optarg))
_usage_invalid_opt_arg(opt, optarg, argv);
config.uid = strtoul(optarg, NULL, 10);
} else if (opt == 'g') {
if (!strisnum(optarg))
_usage_invalid_opt_arg(opt, optarg, argv);
config.gid = strtoul(optarg, NULL, 10);
} else if (opt == 'i') {
config.flags |= CONFIG_FL_REDIR_IN;
if (!(config.inf_name = mm_alloc(strlen(optarg) + 1)))
_failure("malloc");
strcpy(config.inf_name, optarg);
} else if (opt == 'o') {
config.flags |= CONFIG_FL_REDIR_OUT;
if (!(config.outf_name = mm_alloc(strlen(optarg) + 1)))
_failure("malloc");
strcpy(config.outf_name, optarg);
} else if (opt == 'e') {
config.flags |= CONFIG_FL_REDIR_ERR;
if (!(config.errf_name = mm_alloc(strlen(optarg) + 1)))
_failure("malloc");
strcpy(config.errf_name, optarg);
} else if (opt == 'p') {
config.flags |= CONFIG_FL_PIDF_CREATE;
if (!(config.pidf_name = mm_alloc(strlen(optarg) + 1)))
_failure("malloc");
strcpy(config.pidf_name, optarg);
} else if (opt == 'f') {
config.flags |= CONFIG_FL_PIDF_FORCE;
} else if (opt == 'r') {
config.flags |= CONFIG_FL_PROC_RESTART;
} else if (opt == 'R') {
config.flags |= CONFIG_FL_PROC_RESTART;
config.flags |= CONFIG_FL_PROC_RSTIGN;
} else if (opt == 'S') {
config.flags |= CONFIG_FL_PROC_RSTUSIG;
} else {
_usage_invalid_opt(optopt, argv);
}
}
if ((argc - optind) < 1)
_usage(argv);
_config_set_req(argv[optind]);
_config_set_opt(argv, optind);
}
static char *var_evaluate(char *variables, char *token)
{
/* copy variables string so it can be modified */
char *hash = malloc(sizeof(char) * (strlen(variables) + 1));
strcpy(hash, variables);
/* divide hash string into pairs */
char **pairs = 0;
int pairs_count = strtoktoa(hash, ";", &pairs);
/* iterate over each 'key = value' pair */
int i;
for (i = 0; i < pairs_count; ++i) {
char *pair = pairs[i];
/* divide pair into key 'k' and value 'v' */
char *eq = strrchr(pair, '=');
if (!eq) break;
pair[eq - pair] = '\0';
char *k = malloc(sizeof(char) * (strlen(pair)+ 1));
char *v = malloc(sizeof(char) * (strlen(eq + 1) + 1));
sscanf(pair, "%s", k);
sscanf(eq+1, "%s", v);
/* if we've got match on 'k' as our 'token' then parse the value */
if (strcmp(token, k) == 0) {
free(k);
free(hash);
/* check if 'v' we've read is a valid number */
if (strisnum(v)) {
return v;
}
/* else report an error */
else {
char *msg = malloc(sizeof(char) * (max_msg_len + 1));
sprintf(msg, "'%s' is not a proper number", v);
error(msg);
free(msg);
free(v);
return NULL;
}
}
/* so, 'token' is not defined in current pair, try another */
free(v);
free(k);
}
free(hash);
/* there are no matches for our 'token', maybe it's only a number */
if (strisnum(token)) {
char *v = malloc(sizeof(char) * (strlen(token) + 1));
strcpy(v, token);
return v;
}
/* nah, you're doing it wrong */
char *msg = malloc(sizeof(char) * (max_msg_len + 1));
sprintf(msg, "can't find value for '%s' variable", token);
error(msg);
return 0;
}
int
main(int argc, char **argv)
{
int c, i;
int interval = 1; /* Interval between displays */
int count = 0; /* Number of times to sample */
int write_evts = FALSE;
int pos = 0;
#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
/* For I18N */
(void) setlocale(LC_ALL, "");
(void) textdomain(TEXT_DOMAIN);
pgmname = basename(argv[0]);
if ((kc = kstat_open()) == NULL) {
(void) fprintf(stderr, gettext("%s: could not "
"open /dev/kstat\n"), pgmname);
exit(1);
}
while ((c = getopt(argc, argv, "e:w:r:ahln")) != EOF) {
switch (c) {
case 'a':
delta = FALSE;
break;
case 'e':
(void) print_evt();
break;
case 'h':
usage();
break;
case 'l':
(void) print_dev(argc, argv[argc-1]);
break;
case 'n':
banner = FALSE;
break;
case 'r':
(void) parse_cmd(READ_EVT);
break;
case 'w':
(void) parse_cmd(WRITE_EVT);
write_evts = TRUE;
break;
default:
(void) fprintf(stderr, gettext("%s: invalid "
"option\n"), pgmname);
usage();
break;
}
}
if ((argc == 1) || (dev_list_head == NULL))
usage();
/*
* validate remaining operands are numeric.
*/
pos = optind;
while (pos < argc) {
if (strisnum(argv[pos]) == 0) {
(void) fprintf(stderr,
gettext("%s: syntax error\n"),
pgmname);
usage();
}
pos++;
}
if (optind < argc) {
if ((interval = atoi(argv[optind])) == 0) {
(void) fprintf(stderr, gettext("%s: invalid "
"interval value\n"), pgmname);
exit(1);
}
optind++;
if (optind < argc)
if ((count = atoi(argv[optind])) <= 0) {
(void) fprintf(stderr, gettext("%s: "
"invalid iteration value.\n"),
pgmname);
exit(1);
}
}
set_timer(interval);
/*
* Set events for the first time.
*/
if (write_evts == TRUE)
setup_evts();
if (count > 0) {
for (i = 0; i < count; i++) {
if (banner)
print_banner();
check_dr_ops();
read_evts();
(void) fflush(stdout);
(void) pause();
}
} else {
for (;;) {
if (banner)
print_banner();
check_dr_ops();
read_evts();
(void) fflush(stdout);
(void) pause();
}
}
read_evts();
return (0);
}
/* ----------------------------- ports parsing ------------------------------ */
static int parse_ports(struct portinfo *pi, char *ports)
{
char *args[32], *p = strdup(ports);
int argc, j, i;
if (!p) {
fprintf(stderr, "Out of memory");
return 1;
}
argc = strftok(",", ports, args, 32);
for (j = 0; j < argc; j++) {
int neg = 0;
char *a = args[j];
/* ports negation */
if (a[0] == '!') {
neg = 1;
a++;
}
/* range */
if (strchr(a, '-')) {
char *range[2];
int low, high;
strftok("-", a, range, 2);
if (!strisnum(range[0]) || !strisnum(range[1]))
goto err; /* syntax error */
low = strtol(range[0], NULL, 0);
high = strtol(range[1], NULL, 0);
if (low > high) {
int t;
t = high;
high = low;
low = t;
}
for (i = low; i <= high; i++)
pi[i].active = !neg;
/* all the ports */
} else if (!strcmp(a, "all")) {
for (i = 0; i <= MAXPORT; i++)
pi[i].active = !neg;
/* /etc/services ports */
} else if (!strcmp(a, "known")) {
struct servent *se;
setservent(0);
while((se = getservent()) != NULL) {
int port = ntohs(se->s_port);
if (port < 0 || port > MAXPORT)
continue;
pi[port].active = !neg;
}
/* a single port */
} else {
int port;
if (!strisnum(a))
goto err; /* syntax error */
port = strtol(a, NULL, 0);
if (port < 0 || port > MAXPORT)
goto err; /* syntax error */
pi[port].active = !neg;
}
}
free(p);
return 0;
err:
free(p);
return 1;
}
int
main(int argc, char *argv[], char *envp[])
{
extern int mdb_kvm_is_compressed_dump(mdb_io_t *);
mdb_tgt_ctor_f *tgt_ctor = NULL;
const char **tgt_argv = alloca(argc * sizeof (char *));
int tgt_argc = 0;
mdb_tgt_t *tgt;
char object[MAXPATHLEN], execname[MAXPATHLEN];
mdb_io_t *in_io, *out_io, *err_io, *null_io;
struct termios tios;
int status, c;
char *p;
const char *Iflag = NULL, *Lflag = NULL, *Vflag = NULL, *pidarg = NULL;
int fflag = 0, Kflag = 0, Rflag = 0, Sflag = 0, Oflag = 0, Uflag = 0;
int ttylike;
int longmode = 0;
stack_t sigstack;
if (realpath(getexecname(), execname) == NULL) {
(void) strncpy(execname, argv[0], MAXPATHLEN);
execname[MAXPATHLEN - 1] = '\0';
}
mdb_create(execname, argv[0]);
bzero(tgt_argv, argc * sizeof (char *));
argv[0] = (char *)mdb.m_pname;
_mdb_self_fd = open("/proc/self/as", O_RDONLY);
mdb.m_env = envp;
out_io = mdb_fdio_create(STDOUT_FILENO);
mdb.m_out = mdb_iob_create(out_io, MDB_IOB_WRONLY);
err_io = mdb_fdio_create(STDERR_FILENO);
mdb.m_err = mdb_iob_create(err_io, MDB_IOB_WRONLY);
mdb_iob_clrflags(mdb.m_err, MDB_IOB_AUTOWRAP);
null_io = mdb_nullio_create();
mdb.m_null = mdb_iob_create(null_io, MDB_IOB_WRONLY);
in_io = mdb_fdio_create(STDIN_FILENO);
if ((mdb.m_termtype = getenv("TERM")) != NULL) {
mdb.m_termtype = strdup(mdb.m_termtype);
mdb.m_flags |= MDB_FL_TERMGUESS;
}
mdb.m_term = NULL;
mdb_dmode(mdb_dstr2mode(getenv("MDB_DEBUG")));
mdb.m_pgid = getpgrp();
if (getenv("_MDB_EXEC") != NULL)
mdb.m_flags |= MDB_FL_EXEC;
/*
* Setup an alternate signal stack. When tearing down pipelines in
* terminate(), we may have to destroy the stack of the context in
* which we are currently executing the signal handler.
*/
sigstack.ss_sp = mmap(NULL, SIGSTKSZ, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANON, -1, 0);
if (sigstack.ss_sp == MAP_FAILED)
die("could not allocate signal stack");
sigstack.ss_size = SIGSTKSZ;
sigstack.ss_flags = 0;
if (sigaltstack(&sigstack, NULL) != 0)
die("could not set signal stack");
(void) mdb_signal_sethandler(SIGPIPE, SIG_IGN, NULL);
(void) mdb_signal_sethandler(SIGQUIT, SIG_IGN, NULL);
(void) mdb_signal_sethandler(SIGILL, flt_handler, NULL);
(void) mdb_signal_sethandler(SIGTRAP, flt_handler, NULL);
(void) mdb_signal_sethandler(SIGIOT, flt_handler, NULL);
(void) mdb_signal_sethandler(SIGEMT, flt_handler, NULL);
(void) mdb_signal_sethandler(SIGFPE, flt_handler, NULL);
(void) mdb_signal_sethandler(SIGBUS, flt_handler, NULL);
(void) mdb_signal_sethandler(SIGSEGV, flt_handler, NULL);
(void) mdb_signal_sethandler(SIGHUP, (mdb_signal_f *)terminate, NULL);
(void) mdb_signal_sethandler(SIGTERM, (mdb_signal_f *)terminate, NULL);
for (mdb.m_rdvers = RD_VERSION; mdb.m_rdvers > 0; mdb.m_rdvers--) {
if (rd_init(mdb.m_rdvers) == RD_OK)
break;
}
for (mdb.m_ctfvers = CTF_VERSION; mdb.m_ctfvers > 0; mdb.m_ctfvers--) {
if (ctf_version(mdb.m_ctfvers) != -1)
break;
}
if ((p = getenv("HISTSIZE")) != NULL && strisnum(p)) {
mdb.m_histlen = strtoi(p);
if (mdb.m_histlen < 1)
mdb.m_histlen = 1;
}
while (optind < argc) {
while ((c = getopt(argc, argv,
"fkmo:p:s:uwyACD:FI:KL:MOP:R:SUV:W")) != (int)EOF) {
switch (c) {
case 'f':
fflag++;
tgt_ctor = mdb_rawfile_tgt_create;
break;
case 'k':
tgt_ctor = mdb_kvm_tgt_create;
break;
case 'm':
mdb.m_tgtflags |= MDB_TGT_F_NOLOAD;
mdb.m_tgtflags &= ~MDB_TGT_F_PRELOAD;
break;
case 'o':
if (!mdb_set_options(optarg, TRUE))
terminate(2);
break;
case 'p':
tgt_ctor = mdb_proc_tgt_create;
pidarg = optarg;
break;
case 's':
if (!strisnum(optarg)) {
warn("expected integer following -s\n");
terminate(2);
}
mdb.m_symdist = (size_t)(uint_t)strtoi(optarg);
break;
case 'u':
tgt_ctor = mdb_proc_tgt_create;
break;
case 'w':
mdb.m_tgtflags |= MDB_TGT_F_RDWR;
break;
case 'y':
mdb.m_flags |= MDB_FL_USECUP;
break;
case 'A':
(void) mdb_set_options("nomods", TRUE);
break;
case 'C':
(void) mdb_set_options("noctf", TRUE);
break;
case 'D':
mdb_dmode(mdb_dstr2mode(optarg));
break;
case 'F':
mdb.m_tgtflags |= MDB_TGT_F_FORCE;
break;
case 'I':
Iflag = optarg;
break;
case 'L':
Lflag = optarg;
break;
case 'K':
Kflag++;
break;
case 'M':
mdb.m_tgtflags |= MDB_TGT_F_PRELOAD;
mdb.m_tgtflags &= ~MDB_TGT_F_NOLOAD;
break;
case 'O':
Oflag++;
break;
case 'P':
if (!mdb_set_prompt(optarg))
terminate(2);
break;
case 'R':
(void) strncpy(mdb.m_root, optarg, MAXPATHLEN);
mdb.m_root[MAXPATHLEN - 1] = '\0';
Rflag++;
break;
case 'S':
Sflag++;
break;
case 'U':
Uflag++;
break;
case 'V':
Vflag = optarg;
break;
case 'W':
mdb.m_tgtflags |= MDB_TGT_F_ALLOWIO;
break;
case '?':
if (optopt == '?')
usage(0);
/* FALLTHROUGH */
default:
usage(2);
}
}
if (optind < argc) {
const char *arg = argv[optind++];
if (arg[0] == '+' && strlen(arg) == 2) {
if (arg[1] != 'o') {
warn("illegal option -- %s\n", arg);
terminate(2);
}
if (optind >= argc) {
warn("option requires an argument -- "
"%s\n", arg);
terminate(2);
}
if (!mdb_set_options(argv[optind++], FALSE))
terminate(2);
} else
tgt_argv[tgt_argc++] = arg;
}
}
if (rd_ctl(RD_CTL_SET_HELPPATH, (void *)mdb.m_root) != RD_OK) {
warn("cannot set librtld_db helper path to %s\n", mdb.m_root);
terminate(2);
}
if (mdb.m_debug & MDB_DBG_HELP)
terminate(0); /* Quit here if we've printed out the tokens */
if (Iflag != NULL && strchr(Iflag, ';') != NULL) {
warn("macro path cannot contain semicolons\n");
terminate(2);
}
if (Lflag != NULL && strchr(Lflag, ';') != NULL) {
warn("module path cannot contain semicolons\n");
terminate(2);
}
if (Kflag || Uflag) {
char *nm;
if (tgt_ctor != NULL || Iflag != NULL) {
warn("neither -f, -k, -p, -u, nor -I "
"may be used with -K\n");
usage(2);
}
if (Lflag != NULL)
mdb_set_lpath(Lflag);
if ((nm = ttyname(STDIN_FILENO)) == NULL ||
strcmp(nm, "/dev/console") != 0) {
/*
* Due to the consequences of typing mdb -K instead of
* mdb -k on a tty other than /dev/console, we require
* -F when starting kmdb from a tty other than
* /dev/console.
*/
if (!(mdb.m_tgtflags & MDB_TGT_F_FORCE)) {
die("-F must also be supplied to start kmdb "
"from non-console tty\n");
}
if (mdb.m_termtype == NULL || (mdb.m_flags &
MDB_FL_TERMGUESS)) {
if (mdb.m_termtype != NULL)
strfree(mdb.m_termtype);
if ((mdb.m_termtype = mdb_scf_console_term()) !=
NULL)
mdb.m_flags |= MDB_FL_TERMGUESS;
}
} else {
/*
* When on console, $TERM (if set) takes precedence over
* the SMF setting.
*/
if (mdb.m_termtype == NULL && (mdb.m_termtype =
mdb_scf_console_term()) != NULL)
mdb.m_flags |= MDB_FL_TERMGUESS;
}
control_kmdb(Kflag);
terminate(0);
/*NOTREACHED*/
}
/*
* If standard input appears to have tty attributes, attempt to
* initialize a terminal i/o backend on top of stdin and stdout.
*/
ttylike = (IOP_CTL(in_io, TCGETS, &tios) == 0);
if (ttylike) {
if ((mdb.m_term = mdb_termio_create(mdb.m_termtype,
in_io, out_io)) == NULL) {
if (!(mdb.m_flags & MDB_FL_EXEC)) {
warn("term init failed: command-line editing "
"and prompt will not be available\n");
}
} else {
in_io = mdb.m_term;
}
}
mdb.m_in = mdb_iob_create(in_io, MDB_IOB_RDONLY);
if (mdb.m_term != NULL) {
mdb_iob_setpager(mdb.m_out, mdb.m_term);
if (mdb.m_flags & MDB_FL_PAGER)
mdb_iob_setflags(mdb.m_out, MDB_IOB_PGENABLE);
else
mdb_iob_clrflags(mdb.m_out, MDB_IOB_PGENABLE);
} else if (ttylike)
mdb_iob_setflags(mdb.m_in, MDB_IOB_TTYLIKE);
else
mdb_iob_setbuf(mdb.m_in, mdb_alloc(1, UM_SLEEP), 1);
mdb_pservice_init();
mdb_lex_reset();
if ((mdb.m_shell = getenv("SHELL")) == NULL)
mdb.m_shell = "/bin/sh";
/*
* If the debugger state is to be inherited from a previous instance,
* restore it now prior to path evaluation so that %R is updated.
*/
if ((p = getenv(MDB_CONFIG_ENV_VAR)) != NULL) {
mdb_set_config(p);
(void) unsetenv(MDB_CONFIG_ENV_VAR);
}
/*
* Path evaluation part 1: Create the initial module path to allow
* the target constructor to load a support module. Then expand
* any command-line arguments that modify the paths.
*/
if (Iflag != NULL)
mdb_set_ipath(Iflag);
else
mdb_set_ipath(MDB_DEF_IPATH);
if (Lflag != NULL)
mdb_set_lpath(Lflag);
else
mdb_set_lpath(MDB_DEF_LPATH);
if (mdb_get_prompt() == NULL && !(mdb.m_flags & MDB_FL_ADB))
(void) mdb_set_prompt(MDB_DEF_PROMPT);
if (tgt_ctor == mdb_kvm_tgt_create) {
if (pidarg != NULL) {
warn("-p and -k options are mutually exclusive\n");
terminate(2);
}
if (tgt_argc == 0)
tgt_argv[tgt_argc++] = "/dev/ksyms";
if (tgt_argc == 1 && strisnum(tgt_argv[0]) == 0) {
if (mdb.m_tgtflags & MDB_TGT_F_ALLOWIO)
tgt_argv[tgt_argc++] = "/dev/allkmem";
else
tgt_argv[tgt_argc++] = "/dev/kmem";
}
}
if (pidarg != NULL) {
if (tgt_argc != 0) {
warn("-p may not be used with other arguments\n");
terminate(2);
}
if (proc_arg_psinfo(pidarg, PR_ARG_PIDS, NULL, &status) == -1) {
die("cannot attach to %s: %s\n",
pidarg, Pgrab_error(status));
}
if (strchr(pidarg, '/') != NULL)
(void) mdb_iob_snprintf(object, MAXPATHLEN,
"%s/object/a.out", pidarg);
else
(void) mdb_iob_snprintf(object, MAXPATHLEN,
"/proc/%s/object/a.out", pidarg);
tgt_argv[tgt_argc++] = object;
tgt_argv[tgt_argc++] = pidarg;
}
/*
* Find the first argument that is not a special "-" token. If one is
* found, we will examine this file and make some inferences below.
*/
for (c = 0; c < tgt_argc && strcmp(tgt_argv[c], "-") == 0; c++)
continue;
if (c < tgt_argc) {
Elf32_Ehdr ehdr;
mdb_io_t *io;
/*
* If special "-" tokens preceded an argument, shift the entire
* argument list to the left to remove the leading "-" args.
*/
if (c > 0) {
bcopy(&tgt_argv[c], tgt_argv,
sizeof (const char *) * (tgt_argc - c));
tgt_argc -= c;
}
if (fflag)
goto tcreate; /* skip re-exec and just create target */
/*
* If we just have an object file name, and that file doesn't
* exist, and it's a string of digits, infer it to be a
* sequence number referring to a pair of crash dump files.
*/
if (tgt_argc == 1 && access(tgt_argv[0], F_OK) == -1 &&
strisnum(tgt_argv[0])) {
size_t len = strlen(tgt_argv[0]) + 8;
const char *object = tgt_argv[0];
tgt_argv[0] = mdb_alloc(len, UM_SLEEP);
tgt_argv[1] = mdb_alloc(len, UM_SLEEP);
(void) strcpy((char *)tgt_argv[0], "unix.");
(void) strcat((char *)tgt_argv[0], object);
(void) strcpy((char *)tgt_argv[1], "vmcore.");
(void) strcat((char *)tgt_argv[1], object);
if (access(tgt_argv[0], F_OK) == -1 &&
access(tgt_argv[1], F_OK) == -1) {
(void) strcpy((char *)tgt_argv[1], "vmdump.");
(void) strcat((char *)tgt_argv[1], object);
if (access(tgt_argv[1], F_OK) == 0) {
mdb_iob_printf(mdb.m_err,
"cannot open compressed dump; "
"decompress using savecore -f %s\n",
tgt_argv[1]);
terminate(0);
}
}
tgt_argc = 2;
}
/*
* We need to open the object file in order to determine its
* ELF class and potentially re-exec ourself.
*/
if ((io = mdb_fdio_create_path(NULL, tgt_argv[0],
O_RDONLY, 0)) == NULL)
die("failed to open %s", tgt_argv[0]);
/*
* Check for a single vmdump.N compressed dump file,
* and give a helpful message.
*/
if (tgt_argc == 1) {
if (mdb_kvm_is_compressed_dump(io)) {
mdb_iob_printf(mdb.m_err,
"cannot open compressed dump; "
"decompress using savecore -f %s\n",
tgt_argv[0]);
terminate(0);
}
}
/*
* If the target is unknown or is not the rawfile target, do
* a gelf_check to determine if the file is an ELF file. If
* it is not and the target is unknown, use the rawfile tgt.
* Otherwise an ELF-based target is needed, so we must abort.
*/
if (mdb_gelf_check(io, &ehdr, ET_NONE) == -1) {
if (tgt_ctor != NULL) {
(void) mdb_gelf_check(io, &ehdr, ET_EXEC);
mdb_io_destroy(io);
terminate(1);
} else
tgt_ctor = mdb_rawfile_tgt_create;
}
mdb_io_destroy(io);
if (identify_xvm_file(tgt_argv[0], &longmode) == 1) {
#ifdef _LP64
if (!longmode)
goto reexec;
#else
if (longmode)
goto reexec;
#endif
tgt_ctor = mdb_kvm_tgt_create;
goto tcreate;
}
/*
* The object file turned out to be a user core file (ET_CORE),
* and no other arguments were specified, swap 0 and 1. The
* proc target will infer the executable for us.
*/
if (ehdr.e_type == ET_CORE) {
tgt_argv[tgt_argc++] = tgt_argv[0];
tgt_argv[0] = NULL;
tgt_ctor = mdb_proc_tgt_create;
}
/*
* If tgt_argv[1] is filled in, open it up and determine if it
* is a vmcore file. If it is, gelf_check will fail and we
* set tgt_ctor to 'kvm'; otherwise we use the default.
*/
if (tgt_argc > 1 && strcmp(tgt_argv[1], "-") != 0 &&
tgt_argv[0] != NULL && pidarg == NULL) {
Elf32_Ehdr chdr;
if (access(tgt_argv[1], F_OK) == -1)
die("failed to access %s", tgt_argv[1]);
/* *.N case: drop vmdump.N from the list */
if (tgt_argc == 3) {
if ((io = mdb_fdio_create_path(NULL,
tgt_argv[2], O_RDONLY, 0)) == NULL)
die("failed to open %s", tgt_argv[2]);
if (mdb_kvm_is_compressed_dump(io))
tgt_argv[--tgt_argc] = NULL;
mdb_io_destroy(io);
}
if ((io = mdb_fdio_create_path(NULL, tgt_argv[1],
O_RDONLY, 0)) == NULL)
die("failed to open %s", tgt_argv[1]);
if (mdb_gelf_check(io, &chdr, ET_NONE) == -1)
tgt_ctor = mdb_kvm_tgt_create;
mdb_io_destroy(io);
}
/*
* At this point, we've read the ELF header for either an
* object file or core into ehdr. If the class does not match
* ours, attempt to exec the mdb of the appropriate class.
*/
#ifdef _LP64
if (ehdr.e_ident[EI_CLASS] == ELFCLASS32)
goto reexec;
#else
if (ehdr.e_ident[EI_CLASS] == ELFCLASS64)
goto reexec;
#endif
}
tcreate:
if (tgt_ctor == NULL)
tgt_ctor = mdb_proc_tgt_create;
tgt = mdb_tgt_create(tgt_ctor, mdb.m_tgtflags, tgt_argc, tgt_argv);
if (tgt == NULL) {
if (errno == EINVAL)
usage(2); /* target can return EINVAL to get usage */
if (errno == EMDB_TGT)
terminate(1); /* target already printed error msg */
die("failed to initialize target");
}
mdb_tgt_activate(tgt);
mdb_create_loadable_disasms();
if (Vflag != NULL && mdb_dis_select(Vflag) == -1)
warn("invalid disassembler mode -- %s\n", Vflag);
if (Rflag && mdb.m_term != NULL)
warn("Using proto area %s\n", mdb.m_root);
/*
* If the target was successfully constructed and -O was specified,
* we now attempt to enter piggy-mode for debugging jurassic problems.
*/
if (Oflag) {
pcinfo_t pci;
(void) strcpy(pci.pc_clname, "RT");
if (priocntl(P_LWPID, P_MYID, PC_GETCID, (caddr_t)&pci) != -1) {
pcparms_t pcp;
rtparms_t *rtp = (rtparms_t *)pcp.pc_clparms;
rtp->rt_pri = 35;
rtp->rt_tqsecs = 0;
rtp->rt_tqnsecs = RT_TQDEF;
pcp.pc_cid = pci.pc_cid;
if (priocntl(P_LWPID, P_MYID, PC_SETPARMS,
(caddr_t)&pcp) == -1) {
warn("failed to set RT parameters");
Oflag = 0;
}
} else {
warn("failed to get RT class id");
Oflag = 0;
}
if (mlockall(MCL_CURRENT | MCL_FUTURE) == -1) {
warn("failed to lock address space");
Oflag = 0;
}
if (Oflag)
mdb_printf("%s: oink, oink!\n", mdb.m_pname);
}
/*
* Path evaluation part 2: Re-evaluate the path now that the target
* is ready (and thus we have access to the real platform string).
* Do this before reading ~/.mdbrc to allow path modifications prior
* to performing module auto-loading.
*/
mdb_set_ipath(mdb.m_ipathstr);
mdb_set_lpath(mdb.m_lpathstr);
if (!Sflag && (p = getenv("HOME")) != NULL) {
char rcpath[MAXPATHLEN];
mdb_io_t *rc_io;
int fd;
(void) mdb_iob_snprintf(rcpath, MAXPATHLEN, "%s/.mdbrc", p);
fd = open64(rcpath, O_RDONLY);
if (fd >= 0 && (rc_io = mdb_fdio_create_named(fd, rcpath))) {
mdb_iob_t *iob = mdb_iob_create(rc_io, MDB_IOB_RDONLY);
mdb_iob_t *old = mdb.m_in;
mdb.m_in = iob;
(void) mdb_run();
mdb.m_in = old;
}
}
if (!(mdb.m_flags & MDB_FL_NOMODS))
mdb_module_load_all(0);
(void) mdb_signal_sethandler(SIGINT, int_handler, NULL);
while ((status = mdb_run()) == MDB_ERR_ABORT ||
status == MDB_ERR_OUTPUT) {
/*
* If a write failed on stdout, give up. A more informative
* error message will already have been printed by mdb_run().
*/
if (status == MDB_ERR_OUTPUT &&
mdb_iob_getflags(mdb.m_out) & MDB_IOB_ERR) {
mdb_warn("write to stdout failed, exiting\n");
break;
}
continue;
}
terminate((status == MDB_ERR_QUIT || status == 0) ? 0 : 1);
/*NOTREACHED*/
return (0);
reexec:
if ((p = strrchr(execname, '/')) == NULL)
die("cannot determine absolute pathname\n");
#ifdef _LP64
#ifdef __sparc
(void) strcpy(p, "/../sparcv7/");
#else
(void) strcpy(p, "/../i86/");
#endif
#else
#ifdef __sparc
(void) strcpy(p, "/../sparcv9/");
#else
(void) strcpy(p, "/../amd64/");
#endif
#endif
(void) strcat(p, mdb.m_pname);
if (mdb.m_term != NULL)
(void) IOP_CTL(in_io, TCSETSW, &tios);
(void) putenv("_MDB_EXEC=1");
(void) execv(execname, argv);
/*
* If execv fails, suppress ENOEXEC. Experience shows the most common
* reason is that the machine is booted under a 32-bit kernel, in which
* case it is clearer to only print the message below.
*/
if (errno != ENOEXEC)
warn("failed to exec %s", execname);
#ifdef _LP64
die("64-bit %s cannot debug 32-bit program %s\n",
mdb.m_pname, tgt_argv[0] ?
tgt_argv[0] : tgt_argv[1]);
#else
die("32-bit %s cannot debug 64-bit program %s\n",
mdb.m_pname, tgt_argv[0] ?
tgt_argv[0] : tgt_argv[1]);
#endif
goto tcreate;
}
