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heimdal/lib/kadm5/ipropd_slave.c
Nicolas Williams b48bed5f42 Daemons detach atomically to avoid having to wait 
Tests that start daemons have to "wait" for them to start.

This commit makes Heimdal daemons prep to detach (when requested) by
forking early, then having the child signal readiness to the parent when
the child really is ready.  The parent exits only which the child is
ready.  This means that tests will no longer need to wait for daemons.

However, tests will still need a pidfile or such so they can stop the
daemons.

Note that the --detach options should not be used on OS X from launchd,
only from tests.
2015-03-24 11:49:59 -05:00

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/*
* Copyright (c) 1997 - 2008 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "iprop.h"
RCSID("$Id$");
static const char *config_name = "ipropd-slave";
static krb5_log_facility *log_facility;
static char five_min[] = "5 min";
static char *server_time_lost = five_min;
static int time_before_lost;
const char *slave_str = NULL;
static int
connect_to_master (krb5_context context, const char *master,
const char *port_str)
{
char port[NI_MAXSERV];
struct addrinfo *ai, *a;
struct addrinfo hints;
int error;
int s = -1;
memset (&hints, 0, sizeof(hints));
hints.ai_socktype = SOCK_STREAM;
if (port_str == NULL) {
snprintf(port, sizeof(port), "%u", IPROP_PORT);
port_str = port;
}
error = getaddrinfo (master, port_str, &hints, &ai);
if (error) {
krb5_warnx(context, "Failed to get address of to %s: %s",
master, gai_strerror(error));
return -1;
}
for (a = ai; a != NULL; a = a->ai_next) {
char node[NI_MAXHOST];
error = getnameinfo(a->ai_addr, a->ai_addrlen,
node, sizeof(node), NULL, 0, NI_NUMERICHOST);
if (error)
strlcpy(node, "[unknown-addr]", sizeof(node));
s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
if (s < 0)
continue;
if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
krb5_warn(context, errno, "connection failed to %s[%s]",
master, node);
close (s);
continue;
}
krb5_warnx(context, "connection successful "
"to master: %s[%s]", master, node);
break;
}
freeaddrinfo (ai);
if (a == NULL)
return -1;
return s;
}
static void
get_creds(krb5_context context, const char *keytab_str,
krb5_ccache *cache, const char *serverhost)
{
krb5_keytab keytab;
krb5_principal client;
krb5_error_code ret;
krb5_get_init_creds_opt *init_opts;
krb5_creds creds;
char *server;
char keytab_buf[256];
int aret;
if (keytab_str == NULL) {
ret = krb5_kt_default_name (context, keytab_buf, sizeof(keytab_buf));
if (ret)
krb5_err (context, 1, ret, "krb5_kt_default_name");
keytab_str = keytab_buf;
}
ret = krb5_kt_resolve(context, keytab_str, &keytab);
if(ret)
krb5_err(context, 1, ret, "%s", keytab_str);
ret = krb5_sname_to_principal (context, slave_str, IPROP_NAME,
KRB5_NT_SRV_HST, &client);
if (ret) krb5_err(context, 1, ret, "krb5_sname_to_principal");
ret = krb5_get_init_creds_opt_alloc(context, &init_opts);
if (ret) krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
aret = asprintf (&server, "%s/%s", IPROP_NAME, serverhost);
if (aret == -1 || server == NULL)
krb5_errx (context, 1, "malloc: no memory");
ret = krb5_get_init_creds_keytab(context, &creds, client, keytab,
0, server, init_opts);
free (server);
krb5_get_init_creds_opt_free(context, init_opts);
if(ret) krb5_err(context, 1, ret, "krb5_get_init_creds");
ret = krb5_kt_close(context, keytab);
if(ret) krb5_err(context, 1, ret, "krb5_kt_close");
ret = krb5_cc_new_unique(context, krb5_cc_type_memory, NULL, cache);
if(ret) krb5_err(context, 1, ret, "krb5_cc_new_unique");
ret = krb5_cc_initialize(context, *cache, client);
if(ret) krb5_err(context, 1, ret, "krb5_cc_initialize");
ret = krb5_cc_store_cred(context, *cache, &creds);
if(ret) krb5_err(context, 1, ret, "krb5_cc_store_cred");
krb5_free_cred_contents(context, &creds);
krb5_free_principal(context, client);
}
static krb5_error_code
ihave (krb5_context context, krb5_auth_context auth_context,
int fd, uint32_t version)
{
int ret;
u_char buf[8];
krb5_storage *sp;
krb5_data data;
sp = krb5_storage_from_mem (buf, 8);
krb5_store_int32 (sp, I_HAVE);
krb5_store_int32 (sp, version);
krb5_storage_free (sp);
data.length = 8;
data.data = buf;
ret = krb5_write_priv_message(context, auth_context, &fd, &data);
if (ret)
krb5_warn (context, ret, "krb5_write_message");
return ret;
}
static void
receive_loop (krb5_context context,
krb5_storage *sp,
kadm5_server_context *server_context)
{
int ret;
off_t left, right;
void *buf;
int32_t vers, vers2;
ssize_t sret;
/*
* Seek to the current version of the local database.
*/
do {
int32_t len, timestamp, tmp;
if(krb5_ret_int32 (sp, &vers) != 0)
return;
krb5_ret_int32 (sp, &timestamp);
krb5_ret_int32 (sp, &tmp);
krb5_ret_int32 (sp, &len);
if ((uint32_t)vers <= server_context->log_context.version)
krb5_storage_seek(sp, len + 8, SEEK_CUR);
} while((uint32_t)vers <= server_context->log_context.version);
/*
* Read up rest of the entires into the memory...
*/
left = krb5_storage_seek (sp, -16, SEEK_CUR);
right = krb5_storage_seek (sp, 0, SEEK_END);
buf = malloc (right - left);
if (buf == NULL && (right - left) != 0)
krb5_errx (context, 1, "malloc: no memory");
/*
* ...and then write them out to the on-disk log.
*/
krb5_storage_seek (sp, left, SEEK_SET);
krb5_storage_read (sp, buf, right - left);
sret = write (server_context->log_context.log_fd, buf, right-left);
if (sret != right - left)
krb5_err(context, 1, errno, "Failed to write log to disk");
ret = fsync (server_context->log_context.log_fd);
if (ret)
krb5_err(context, 1, errno, "Failed to sync log to disk");
free (buf);
/*
* Go back to the startpoint and start to commit the entires to
* the database.
*/
krb5_storage_seek (sp, left, SEEK_SET);
for(;;) {
int32_t len, len2, timestamp, tmp;
off_t cur, cur2;
enum kadm_ops op;
if(krb5_ret_int32 (sp, &vers) != 0)
break;
ret = krb5_ret_int32 (sp, &timestamp);
if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers);
ret = krb5_ret_int32 (sp, &tmp);
if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers);
op = tmp;
ret = krb5_ret_int32 (sp, &len);
if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers);
if (len < 0)
krb5_errx(context, 1, "log is corrupted, "
"negative length of entry version %ld: %ld",
(long)vers, (long)len);
cur = krb5_storage_seek(sp, 0, SEEK_CUR);
krb5_warnx (context, "replaying entry %d", (int)vers);
ret = kadm5_log_replay (server_context,
op, vers, len, sp);
if (ret) {
const char *s = krb5_get_error_message(server_context->context, ret);
krb5_warnx (context,
"kadm5_log_replay: %ld. Lost entry entry, "
"Database out of sync ?: %s (%d)",
(long)vers, s ? s : "unknown error", ret);
krb5_free_error_message(context, s);
}
{
/*
* Make sure the krb5_log_replay does the right thing wrt
* reading out data from the sp.
*/
cur2 = krb5_storage_seek(sp, 0, SEEK_CUR);
if (cur + len != cur2)
krb5_errx(context, 1,
"kadm5_log_reply version: %ld didn't read the whole entry",
(long)vers);
}
if (krb5_ret_int32 (sp, &len2) != 0)
krb5_errx(context, 1, "entry %ld: postamble too short", (long)vers);
if(krb5_ret_int32 (sp, &vers2) != 0)
krb5_errx(context, 1, "entry %ld: postamble too short", (long)vers);
if (len != len2)
krb5_errx(context, 1, "entry %ld: len != len2", (long)vers);
if (vers != vers2)
krb5_errx(context, 1, "entry %ld: vers != vers2", (long)vers);
}
/*
* Update version
*/
server_context->log_context.version = vers;
}
static void
receive (krb5_context context,
krb5_storage *sp,
kadm5_server_context *server_context)
{
int ret;
ret = server_context->db->hdb_open(context,
server_context->db,
O_RDWR | O_CREAT, 0600);
if (ret)
krb5_err (context, 1, ret, "db->open");
receive_loop (context, sp, server_context);
ret = server_context->db->hdb_close (context, server_context->db);
if (ret)
krb5_err (context, 1, ret, "db->close");
}
static void
send_im_here (krb5_context context, int fd,
krb5_auth_context auth_context)
{
krb5_storage *sp;
krb5_data data;
int ret;
ret = krb5_data_alloc (&data, 4);
if (ret)
krb5_err (context, 1, ret, "send_im_here");
sp = krb5_storage_from_data (&data);
if (sp == NULL)
krb5_errx (context, 1, "krb5_storage_from_data");
krb5_store_int32(sp, I_AM_HERE);
krb5_storage_free(sp);
ret = krb5_write_priv_message(context, auth_context, &fd, &data);
krb5_data_free(&data);
if (ret)
krb5_err (context, 1, ret, "krb5_write_priv_message");
}
static void
reinit_log(krb5_context context,
kadm5_server_context *server_context,
int32_t vno)
{
krb5_error_code ret;
ret = kadm5_log_reinit (server_context);
if (ret)
krb5_err(context, 1, ret, "kadm5_log_reinit");
ret = kadm5_log_set_version (server_context, vno - 1);
if (ret)
krb5_err (context, 1, ret, "kadm5_log_set_version");
ret = kadm5_log_nop (server_context);
if (ret)
krb5_err (context, 1, ret, "kadm5_log_nop");
}
static krb5_error_code
receive_everything (krb5_context context, int fd,
kadm5_server_context *server_context,
krb5_auth_context auth_context)
{
int ret;
krb5_data data;
int32_t vno = 0;
int32_t opcode;
krb5_storage *sp;
char *dbname;
HDB *mydb;
krb5_warnx(context, "receive complete database");
ret = asprintf(&dbname, "%s-NEW", server_context->db->hdb_name);
if (ret == -1)
krb5_err(context, 1, ENOMEM, "asprintf");
ret = hdb_create(context, &mydb, dbname);
if(ret)
krb5_err(context,1, ret, "hdb_create");
free(dbname);
ret = hdb_set_master_keyfile (context,
mydb, server_context->config.stash_file);
if(ret)
krb5_err(context,1, ret, "hdb_set_master_keyfile");
/* I really want to use O_EXCL here, but given that I can't easily clean
up on error, I won't */
ret = mydb->hdb_open(context, mydb, O_RDWR | O_CREAT | O_TRUNC, 0600);
if (ret)
krb5_err (context, 1, ret, "db->open");
sp = NULL;
krb5_data_zero(&data);
do {
ret = krb5_read_priv_message(context, auth_context, &fd, &data);
if (ret) {
krb5_warn (context, ret, "krb5_read_priv_message");
goto cleanup;
}
sp = krb5_storage_from_data (&data);
if (sp == NULL)
krb5_errx (context, 1, "krb5_storage_from_data");
krb5_ret_int32 (sp, &opcode);
if (opcode == ONE_PRINC) {
krb5_data fake_data;
hdb_entry_ex entry;
krb5_storage_free(sp);
fake_data.data = (char *)data.data + 4;
fake_data.length = data.length - 4;
memset(&entry, 0, sizeof(entry));
ret = hdb_value2entry (context, &fake_data, &entry.entry);
if (ret)
krb5_err (context, 1, ret, "hdb_value2entry");
ret = mydb->hdb_store(server_context->context,
mydb,
0, &entry);
if (ret)
krb5_err (context, 1, ret, "hdb_store");
hdb_free_entry (context, &entry);
krb5_data_free (&data);
} else if (opcode == NOW_YOU_HAVE)
;
else
krb5_errx (context, 1, "strange opcode %d", opcode);
} while (opcode == ONE_PRINC);
if (opcode != NOW_YOU_HAVE)
krb5_errx (context, 1, "receive_everything: strange %d", opcode);
krb5_ret_int32 (sp, &vno);
krb5_storage_free(sp);
reinit_log(context, server_context, vno);
ret = mydb->hdb_rename (context, mydb, server_context->db->hdb_name);
if (ret)
krb5_err (context, 1, ret, "db->rename");
cleanup:
krb5_data_free (&data);
ret = mydb->hdb_close (context, mydb);
if (ret)
krb5_err (context, 1, ret, "db->close");
ret = mydb->hdb_destroy (context, mydb);
if (ret)
krb5_err (context, 1, ret, "db->destroy");
krb5_warnx(context, "receive complete database, version %ld", (long)vno);
return ret;
}
static void
slave_status(krb5_context context,
const char *file,
const char *status, ...)
__attribute__ ((format (printf, 3, 4)));
static void
slave_status(krb5_context context,
const char *file,
const char *fmt, ...)
{
char *status = NULL;
va_list args;
int len;
va_start(args, fmt);
len = vasprintf(&status, fmt, args);
va_end(args);
if (len < 0 || status == NULL) {
unlink(file);
return;
}
krb5_warnx(context, "slave status change: %s", status);
rk_dumpdata(file, status, len);
free(status);
}
static void
is_up_to_date(krb5_context context, const char *file,
kadm5_server_context *server_context)
{
krb5_error_code ret;
char buf[80];
ret = krb5_format_time(context, time(NULL), buf, sizeof(buf), 1);
if (ret) {
unlink(file);
return;
}
slave_status(context, file, "up-to-date with version: %lu at %s",
(unsigned long)server_context->log_context.version, buf);
}
static char *status_file;
static char *config_file;
static char *realm;
static int version_flag;
static int help_flag;
static char *keytab_str;
static char *port_str;
static int detach_from_console;
static int daemon_child = -1;
static struct getargs args[] = {
{ "config-file", 'c', arg_string, &config_file, NULL, NULL },
{ "realm", 'r', arg_string, &realm, NULL, NULL },
{ "keytab", 'k', arg_string, &keytab_str,
"keytab to get authentication from", "kspec" },
{ "time-lost", 0, arg_string, &server_time_lost,
"time before server is considered lost", "time" },
{ "status-file", 0, arg_string, &status_file,
"file to write out status into", "file" },
{ "port", 0, arg_string, &port_str,
"port ipropd-slave will connect to", "port"},
{ "detach", 0, arg_flag, &detach_from_console,
"detach from console", NULL },
{ "daemon-child", 0 , arg_integer, &daemon_child,
"private argument, do not use", NULL },
{ "hostname", 0, arg_string, rk_UNCONST(&slave_str),
"hostname of slave (if not same as hostname)", "hostname" },
{ "version", 0, arg_flag, &version_flag, NULL, NULL },
{ "help", 0, arg_flag, &help_flag, NULL, NULL }
};
static int num_args = sizeof(args) / sizeof(args[0]);
static void
usage(int status)
{
arg_printusage(args, num_args, NULL, "master");
exit(status);
}
int
main(int argc, char **argv)
{
krb5_error_code ret;
krb5_context context;
krb5_auth_context auth_context;
void *kadm_handle;
kadm5_server_context *server_context;
kadm5_config_params conf;
int master_fd;
krb5_ccache ccache;
krb5_principal server;
char **files;
int optidx = 0;
time_t reconnect_min;
time_t backoff;
time_t reconnect_max;
time_t reconnect;
time_t before = 0;
const char *master;
setprogname(argv[0]);
if (getarg(args, num_args, argc, argv, &optidx))
usage(1);
if (help_flag)
usage(0);
if (version_flag) {
print_version(NULL);
exit(0);
}
if (detach_from_console && daemon_child == -1)
roken_detach_prep(argc, argv, "--daemon-child");
pidfile(NULL);
ret = krb5_init_context(&context);
if (ret)
errx (1, "krb5_init_context failed: %d", ret);
setup_signal();
if (config_file == NULL) {
if (asprintf(&config_file, "%s/kdc.conf", hdb_db_dir(context)) == -1
|| config_file == NULL)
errx(1, "out of memory");
}
ret = krb5_prepend_config_files_default(config_file, &files);
if (ret)
krb5_err(context, 1, ret, "getting configuration files");
ret = krb5_set_config_files(context, files);
krb5_free_config_files(files);
if (ret)
krb5_err(context, 1, ret, "reading configuration files");
argc -= optidx;
argv += optidx;
if (argc != 1)
usage(1);
master = argv[0];
if (status_file == NULL) {
if (asprintf(&status_file, "%s/ipropd-slave-status", hdb_db_dir(context)) < 0 || status_file == NULL)
krb5_errx(context, 1, "can't allocate status file buffer");
}
krb5_openlog(context, "ipropd-slave", &log_facility);
krb5_set_warn_dest(context, log_facility);
slave_status(context, status_file, "bootstrapping");
ret = krb5_kt_register(context, &hdb_get_kt_ops);
if(ret)
krb5_err(context, 1, ret, "krb5_kt_register");
time_before_lost = parse_time (server_time_lost, "s");
if (time_before_lost < 0)
krb5_errx (context, 1, "couldn't parse time: %s", server_time_lost);
slave_status(context, status_file, "getting credentials from keytab/database");
memset(&conf, 0, sizeof(conf));
if(realm) {
conf.mask |= KADM5_CONFIG_REALM;
conf.realm = realm;
}
ret = kadm5_init_with_password_ctx (context,
KADM5_ADMIN_SERVICE,
NULL,
KADM5_ADMIN_SERVICE,
&conf, 0, 0,
&kadm_handle);
if (ret)
krb5_err (context, 1, ret, "kadm5_init_with_password_ctx");
server_context = (kadm5_server_context *)kadm_handle;
slave_status(context, status_file, "creating log file");
ret = kadm5_log_init (server_context);
if (ret)
krb5_err (context, 1, ret, "kadm5_log_init");
get_creds(context, keytab_str, &ccache, master);
ret = krb5_sname_to_principal (context, master, IPROP_NAME,
KRB5_NT_SRV_HST, &server);
if (ret)
krb5_err (context, 1, ret, "krb5_sname_to_principal");
auth_context = NULL;
master_fd = -1;
krb5_appdefault_time(context, config_name, NULL, "reconnect-min",
10, &reconnect_min);
krb5_appdefault_time(context, config_name, NULL, "reconnect-max",
300, &reconnect_max);
krb5_appdefault_time(context, config_name, NULL, "reconnect-backoff",
10, &backoff);
reconnect = reconnect_min;
slave_status(context, status_file, "ipropd-slave started");
roken_detach_finish(NULL, daemon_child);
while (!exit_flag) {
time_t now, elapsed;
int connected = FALSE;
now = time(NULL);
elapsed = now - before;
if (elapsed < reconnect) {
time_t left = reconnect - elapsed;
krb5_warnx(context, "sleeping %d seconds before "
"retrying to connect", (int)left);
sleep(left);
}
before = now;
slave_status(context, status_file, "connecting to master: %s\n", master);
master_fd = connect_to_master (context, master, port_str);
if (master_fd < 0)
goto retry;
reconnect = reconnect_min;
if (auth_context) {
krb5_auth_con_free(context, auth_context);
auth_context = NULL;
krb5_cc_destroy(context, ccache);
get_creds(context, keytab_str, &ccache, master);
}
ret = krb5_sendauth (context, &auth_context, &master_fd,
IPROP_VERSION, NULL, server,
AP_OPTS_MUTUAL_REQUIRED, NULL, NULL,
ccache, NULL, NULL, NULL);
if (ret) {
krb5_warn (context, ret, "krb5_sendauth");
goto retry;
}
krb5_warnx(context, "ipropd-slave started at version: %ld",
(long)server_context->log_context.version);
ret = ihave (context, auth_context, master_fd,
server_context->log_context.version);
if (ret)
goto retry;
connected = TRUE;
slave_status(context, status_file, "connected to master, waiting instructions");
while (connected && !exit_flag) {
krb5_data out;
krb5_storage *sp;
int32_t tmp;
fd_set readset;
struct timeval to;
#ifndef NO_LIMIT_FD_SETSIZE
if (master_fd >= FD_SETSIZE)
krb5_errx (context, 1, "fd too large");
#endif
FD_ZERO(&readset);
FD_SET(master_fd, &readset);
to.tv_sec = time_before_lost;
to.tv_usec = 0;
ret = select (master_fd + 1,
&readset, NULL, NULL, &to);
if (ret < 0) {
if (errno == EINTR)
continue;
else
krb5_err (context, 1, errno, "select");
}
if (ret == 0) {
krb5_warn (context, 1, "server didn't send a message "
"in %d seconds", time_before_lost);
connected = FALSE;
continue;
}
ret = krb5_read_priv_message(context, auth_context, &master_fd, &out);
if (ret) {
krb5_warn (context, ret, "krb5_read_priv_message");
connected = FALSE;
continue;
}
sp = krb5_storage_from_mem (out.data, out.length);
krb5_ret_int32 (sp, &tmp);
switch (tmp) {
case FOR_YOU :
receive (context, sp, server_context);
ret = ihave (context, auth_context, master_fd,
server_context->log_context.version);
if (ret) {
connected = FALSE;
} else {
is_up_to_date(context, status_file, server_context);
}
break;
case TELL_YOU_EVERYTHING :
ret = receive_everything (context, master_fd, server_context,
auth_context);
if (ret)
connected = FALSE;
else
is_up_to_date(context, status_file, server_context);
break;
case ARE_YOU_THERE :
is_up_to_date(context, status_file, server_context);
send_im_here (context, master_fd, auth_context);
break;
case YOU_HAVE_LAST_VERSION:
is_up_to_date(context, status_file, server_context);
break;
case NOW_YOU_HAVE :
case I_HAVE :
case ONE_PRINC :
case I_AM_HERE :
default :
krb5_warnx (context, "Ignoring command %d", tmp);
break;
}
krb5_storage_free (sp);
krb5_data_free (&out);
}
slave_status(context, status_file, "disconnected from master");
retry:
if (connected == FALSE)
krb5_warnx (context, "disconnected for server");
if (exit_flag)
krb5_warnx (context, "got an exit signal");
if (master_fd >= 0)
close(master_fd);
reconnect += backoff;
if (reconnect > reconnect_max) {
slave_status(context, status_file, "disconnected from master for a long time");
reconnect = reconnect_max;
}
}
if (status_file)
unlink(status_file);
if (0);
#ifndef NO_SIGXCPU
else if(exit_flag == SIGXCPU)
krb5_warnx(context, "%s CPU time limit exceeded", getprogname());
#endif
else if(exit_flag == SIGINT || exit_flag == SIGTERM)
krb5_warnx(context, "%s terminated", getprogname());
else
krb5_warnx(context, "%s unexpected exit reason: %ld",
getprogname(), (long)exit_flag);
return 0;
}
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