Move everything from /var/adm to /var/log

[unleashed/lotheac.git] / usr / src / cmd / svc / lsvcrun / lsvcrun.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (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 (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
 */

/*
 * lsvcrun - run an rc?.d script, modifying appropriate data in the
 * repository to reflect legacy behavior.
 *
 * We try to keep track of what we can for the legacy scripts via
 * property groups under the smf/legacy_run service.  Each property
 * group identifies a service, named in the form 'rc2_d_S10foo'.
 *
 * Each group has the following properties: name, the script name
 * displayed by svcs(1m); state_timestamp; contract, contract ID;
 * inode, the inode of the script; and suffix, the suffix of the
 * script name, e.g. 'foo'.
 *
 * In order to support rc scripts which delete themselves upon invocation we
 * collect inode before running the script.
 *
 * When we run a K script, we try to identify and remove the
 * property group by means of examining the inode and script
 * suffix.  The inode check means more than one script with the
 * same suffix will still work as intended in the common case.
 *
 * If we cannot find a property group, or one already exists
 * when we try to add one, then we print a suitable warning.  These
 * are warnings because there was no strict requirement that K
 * and S scripts be matched up.
 *
 * In the face of these assumptions being proved wrong, we always
 * make sure to execute the script anyway in an attempt to keep
 * things working as they used to.  If we can't execute the script,
 * we try to leave the repository in the state it was before.
 */

#include <sys/ctfs.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <fnmatch.h>
#include <libcontract.h>
#include <libcontract_priv.h>
#include <libintl.h>
#include <libscf.h>
#include <libscf_priv.h>
#include <libuutil.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <time.h>
#include <unistd.h>
#include <limits.h>


/* Environment variables to pass on.  See clean_environment(). */
static char *evars_to_pass[] = { "LANG", "LC_ALL", "LC_COLLATE", "LC_CTYPE",
        "LC_MESSAGES", "LC_MONETARY", "LC_NUMERIC", "LC_TIME", "PATH", "TZ"
};

#define EVARS_TO_PASS_NUM                                               \
        (sizeof (evars_to_pass) / sizeof (*evars_to_pass))


static void
usage()
{
        (void) fprintf(stderr,
            gettext("Usage: %s [-s] script {start | stop}\n"), uu_getpname());
        exit(UU_EXIT_USAGE);
}

/*
 * Pick out the script name and convert it for use as an SMF property
 * group name.
 */
static char *
start_pg_name(const char *path)
{
        char *out, *cp;

        if (fnmatch("/etc/rc[0-6S].d/S*", path, FNM_PATHNAME) != 0) {
                uu_warn(gettext("couldn't parse name %s.\n"), path);
                return (NULL);
        }

        out = strdup(path + sizeof ("/etc/") - 1);

        if (out == NULL) {
                uu_warn(gettext("strdup() failed (%s).\n"), strerror(errno));
                return (NULL);
        }

        /* Convert illegal characters to _. */
        for (cp = out; *cp != '\0'; ++cp) {
                /* locale problem? */
                if (!isalnum(*cp) && *cp != '-')
                        *cp = '_';
        }

        return (out);
}

static char *
script_suffix(const char *path)
{
        const char *cp;
        char *out;

        if (fnmatch("/etc/rc[0-6S].d/[SK]*", path, FNM_PATHNAME) != 0) {
                uu_warn(gettext("couldn't parse name %s.\n"), path);
                return (NULL);
        }

        cp = path + sizeof ("/etc/rc0.d/S") - 1;

        while (isdigit(*cp))
                cp++;

        if (*cp == '\0') {
                uu_warn(gettext("couldn't parse name %s.\n"), path);
                return (NULL);
        }

        out = strdup(cp);
        if (out == NULL)
                uu_warn(gettext("strdup() failed (%s).\n"), strerror(errno));

        return (out);
}

/*
 * Convert a path to an acceptable SMF (service) name.
 */
static char *
path_to_svc_name(const char *path)
{
        char *out, *cp;

        out = strdup(path);
        if (out == NULL) {
                uu_warn(gettext("strdup() failed (%s).\n"), strerror(errno));
                return (NULL);
        }

        /* Convert illegal characters to _. */
        for (cp = out; *cp != '\0'; ++cp) {
                /* locale problem? */
                if (!isalnum(*cp) && *cp != '-' && *cp != '/')
                        *cp = '_';
        }

        /* If the first character is _, use a instead. */
        if (*out == '_')
                *out = 'a';

        return (out);
}

static void
scferr(const char *func)
{
        uu_warn(gettext("%s failed (%s).  Repository will not be modified.\n"),
            func, scf_strerror(scf_error()));
}

static scf_propertygroup_t *
get_start_pg(const char *script, scf_handle_t *h, scf_service_t *svc,
    boolean_t *ok)
{
        char *pg_name = NULL;
        scf_propertygroup_t *pg = NULL;
        scf_property_t *prop = NULL;

        if ((pg_name = start_pg_name(script)) == NULL)
                return (NULL);

        if ((pg = scf_pg_create(h)) == NULL) {
                scferr("scf_pg_create()");
                goto out;
        }

add:
        if (scf_service_add_pg(svc, pg_name, SCF_GROUP_FRAMEWORK,
            SCF_PG_FLAG_NONPERSISTENT, pg) == 0) {
                *ok = 1;
                free(pg_name);
                return (pg);
        }

        switch (scf_error()) {
        case SCF_ERROR_INVALID_ARGUMENT:
                assert(0);
                abort();
                /* NOTREACHED */

        case SCF_ERROR_EXISTS:
                break;

        case SCF_ERROR_PERMISSION_DENIED:
                uu_die(gettext(
                    "Insufficient privilege to add repository properties; "
                    "not launching \"%s\".\n"), script);
                /* NOTREACHED */

        default:
                scferr("scf_service_add_pg()");
                scf_pg_destroy(pg);
                pg = NULL;
                goto out;
        }

        if (scf_service_get_pg(svc, pg_name, pg) != 0) {
                switch (scf_error()) {
                case SCF_ERROR_INVALID_ARGUMENT:
                        assert(0);
                        abort();
                        /* NOTREACHED */

                case SCF_ERROR_NOT_FOUND:
                        goto add;

                default:
                        scferr("scf_service_get_pg()");
                        scf_pg_destroy(pg);
                        pg = NULL;
                        goto out;
                }
        }

        if ((prop = scf_property_create(h)) == NULL) {
                scferr("scf_property_create()");
                scf_pg_destroy(pg);
                pg = NULL;
                goto out;
        }

        /*
         * See if the pg has the name property.  If it has, that
         * implies we successfully ran the same script before.  We
         * should re-run it anyway, but not modify the existing pg;
         * this might lose contract-control but there's not much we
         * can do.
         *
         * If there's no name property, then we probably couldn't
         * remove the pg fully after a script failed to run.
         */

        if (scf_pg_get_property(pg, SCF_LEGACY_PROPERTY_NAME, prop) == 0) {
                uu_warn(gettext("Service matching \"%s\" "
                    "seems to be running.\n"), script);
                scf_pg_destroy(pg);
                pg = NULL;
        } else if (scf_error() != SCF_ERROR_NOT_FOUND) {
                scferr("scf_pg_get_property()");
                scf_pg_destroy(pg);
                pg = NULL;
        } else {
                uu_warn(gettext("Service \"%s\" has an invalid property "
                    "group.\n"), script);
        }

out:
        free(pg_name);
        scf_property_destroy(prop);
        return (pg);
}

static scf_propertygroup_t *
pg_match(scf_handle_t *h, scf_service_t *svc, ino_t ino, const char *suffix)
{
        char buf[PATH_MAX];
        scf_iter_t *iter = NULL;
        scf_propertygroup_t *pg = NULL;
        scf_property_t *prop = NULL;
        scf_value_t *val = NULL;

        if ((pg = scf_pg_create(h)) == NULL) {
                scferr("scf_pg_create()");
                goto err;
        }

        if ((iter = scf_iter_create(h)) == NULL) {
                scferr("scf_iter_create()");
                goto err;
        }

        if ((prop = scf_property_create(h)) == NULL) {
                scferr("scf_property_create()");
                goto err;
        }

        if ((val = scf_value_create(h)) == NULL) {
                scferr("scf_value_create()");
                goto err;
        }

        if (scf_iter_service_pgs_typed(iter, svc, SCF_GROUP_FRAMEWORK) !=
            0) {
                scferr("scf_iter_service_pgs_typed()");
                goto err;
        }

        while (scf_iter_next_pg(iter, pg) > 0) {
                int match = 1;

                if (suffix != NULL) {
                        ssize_t len;

                        if (scf_pg_get_property(pg, SCF_LEGACY_PROPERTY_SUFFIX,
                            prop) != 0)
                                continue;

                        if (scf_property_get_value(prop, val) != 0)
                                continue;

                        len = scf_value_get_astring(val, buf, sizeof (buf));
                        if (len < 0) {
                                scferr("scf_value_get_astring()");
                                goto err;
                        }
                        if (len >= sizeof (buf))
                                continue;

                        match = (strcmp(buf, suffix) == 0);
                }

                if (ino != 0) {
                        uint64_t pval;

                        if (scf_pg_get_property(pg, SCF_LEGACY_PROPERTY_INODE,
                            prop) != 0)
                                continue;

                        if (scf_property_get_value(prop, val) != 0)
                                continue;

                        if (scf_value_get_count(val, &pval) != 0)
                                continue;

                        match = (ino == pval) && match;
                }

                if (match)
                        goto out;
        }

err:
        scf_pg_destroy(pg);
        pg = NULL;

out:
        scf_value_destroy(val);
        scf_iter_destroy(iter);
        scf_property_destroy(prop);
        return (pg);
}

/*
 * Try and find the property group matching the service this script
 * stops.  First we look for a matching inode plus a matching suffix.
 * This commonly succeeds, but if not, we just search for inode.
 * Finally, we try for just the script suffix.
 */
static scf_propertygroup_t *
get_stop_pg(const char *script, scf_handle_t *h, scf_service_t *svc,
    boolean_t *ok)
{
        struct stat st;
        char *suffix;
        scf_propertygroup_t *pg;

        if (stat(script, &st) != 0) {
                uu_warn(gettext("Couldn't stat %s (%s).\n"), script,
                    strerror(errno));
                return (NULL);
        }

        if ((suffix = script_suffix(script)) == NULL) {
                pg = pg_match(h, svc, st.st_ino, NULL);
                if (pg != NULL)
                        goto out;
                return (NULL);
        }

        if ((pg = pg_match(h, svc, st.st_ino, suffix)) != NULL)
                goto out;

        if ((pg = pg_match(h, svc, st.st_ino, NULL)) != NULL)
                goto out;

        if ((pg = pg_match(h, svc, 0, suffix)) == NULL) {
                uu_warn(gettext("Service matching \"%s\" "
                    "doesn't seem to be running.\n"), script);
                free(suffix);
                return (NULL);
        }

out:
        *ok = 1;
        free(suffix);
        return (pg);
}

static scf_propertygroup_t *
get_script_pg(const char *script, boolean_t start_flag, boolean_t *ok)
{
        scf_handle_t *h = NULL;
        scf_scope_t *scope = NULL;
        scf_service_t *svc = NULL;
        scf_propertygroup_t *pg = NULL;

        *ok = 0;

        h = scf_handle_create(SCF_VERSION);
        if (h == NULL) {
                scferr("scf_handle_create()");
                goto out;
        }

        if (scf_handle_bind(h) != 0) {
                if (scf_error() != SCF_ERROR_NO_SERVER) {
                        scferr("scf_handle_bind()");
                } else {
                        uu_warn(gettext(
                            "Could not connect to svc.configd.\n"));
                }
                goto out;
        }

        if ((scope = scf_scope_create(h)) == NULL) {
                scferr("scf_scope_create()");
                goto out;
        }

        if ((svc = scf_service_create(h)) == NULL) {
                scferr("scf_service_create()");
                goto out;
        }

        if (scf_handle_get_scope(h, SCF_SCOPE_LOCAL, scope) != 0) {
                scferr("scf_handle_get_local_scope()");
                goto out;
        }

        if (scf_scope_get_service(scope, SCF_LEGACY_SERVICE, svc) != 0) {
                if (scf_error() != SCF_ERROR_NOT_FOUND) {
                        scferr("scf_scope_get_service()");
                        goto out;
                }

                if (scf_scope_add_service(scope, SCF_LEGACY_SERVICE, svc) !=
                    0) {
                        scferr("scf_scope_add_service()");
                        goto out;
                }
        }

        if (start_flag)
                pg = get_start_pg(script, h, svc, ok);
        else
                pg = get_stop_pg(script, h, svc, ok);

out:
        scf_service_destroy(svc);
        scf_scope_destroy(scope);
        return (pg);
}

static int
prepare_contract(const char *script, const char *action)
{
        int fd;
        char *svc_name;
        char *svc_strbuf;
        int err = 0;

        do {
                fd = open(CTFS_ROOT "/process/template", O_RDWR);
        } while (fd < 0 && errno == EINTR);
        if (fd < 0) {
                uu_warn(gettext("Can not create contract"));
                return (-1);
        }

        svc_strbuf = malloc(CT_PARAM_MAX_SIZE);
        if (svc_strbuf == NULL) {
                uu_warn(gettext("Can not allocate memory"));
                err = -1;
                goto cleanup;
        }

        (void) strlcpy(svc_strbuf, SCF_FMRI_LEGACY_PREFIX, CT_PARAM_MAX_SIZE);
        svc_name = path_to_svc_name(script);
        (void) strlcat(svc_strbuf, svc_name ? svc_name : script,
            CT_PARAM_MAX_SIZE);
        if (svc_name != NULL) {
                free(svc_name);
        }

        if ((errno = ct_pr_tmpl_set_svc_fmri(fd, svc_strbuf)) != 0) {
                uu_warn(gettext("Can not set svc_fmri"));
                err = -1;
                goto cleanup;
        }

        (void) strlcpy(svc_strbuf, action, CT_PARAM_MAX_SIZE);
        if ((errno = ct_pr_tmpl_set_svc_aux(fd, svc_strbuf)) != 0) {
                uu_warn(gettext("Can not set svc_aux"));
                err = -1;
                goto cleanup;
        }

        /* Leave HWERR in fatal set. */

        errno = ct_tmpl_activate(fd);
        if (errno != 0) {
                assert(errno == EPERM);
                uu_warn(gettext("Can not activate contract template"));
                err = -1;
                goto cleanup;
        }

cleanup:
        free(svc_strbuf);
        (void) close(fd);

        return (err);
}

static void
cleanup_pg(scf_propertygroup_t *pg)
{
        scf_error_t err;
        char buf[80];

        if (scf_pg_delete(pg) == 0)
                return;

        err = scf_error();

        if (scf_pg_to_fmri(pg, buf, sizeof (buf)) != 0)
                (void) strcpy(buf, "?");

        uu_warn(gettext("Could not remove property group %s: %s.\n"), buf,
            scf_strerror(err));
}

/*
 * Create a duplicate environment which only contains approved
 * variables---those in evars_to_pass and those beginning with "_INIT_".
 */
static char **
approved_env(char **env)
{
        char **newenv;
        int i, i_new, j;

        for (i = 0; env[i] != NULL; ++i)
                ;

        newenv = malloc(sizeof (*newenv) * (i + 1));
        if (newenv == NULL)
                return (NULL);

        i_new = 0;

        for (i = 0; env[i] != NULL; ++i) {
                if (strncmp(env[i], "_INIT_", sizeof ("_INIT_") - 1) == 0) {
                        newenv[i_new++] = env[i];
                        continue;
                }

                for (j = 0; j < EVARS_TO_PASS_NUM; ++j) {
                        size_t l = strlen(evars_to_pass[j]);

                        if (env[i][l] == '=' &&
                            strncmp(env[i], evars_to_pass[j], l) == 0)
                                newenv[i_new++] = env[i];
                }
        }

        newenv[i_new] = NULL;

        return (newenv);
}

/*
 * Create a duplicate environment which does not contain any SMF_ variables.
 */
static char **
env_without_smf(char **env)
{
        char **newenv;
        int i, i_new;

        for (i = 0; env[i] != NULL; ++i)
                ;

        newenv = malloc(sizeof (*newenv) * (i + 1));
        if (newenv == NULL)
                return (NULL);

        i_new = 0;

        for (i = 0; env[i] != NULL; ++i) {
                if (strncmp(env[i], "SMF_", sizeof ("SMF_") - 1) == 0)
                        continue;

                newenv[i_new++] = env[i];
        }

        newenv[i_new] = NULL;

        return (newenv);
}

static int
add_new_property(scf_handle_t *h, scf_transaction_t *tx, const char *name,
    scf_type_t ty, const void *val)
{
        scf_transaction_entry_t *e;
        scf_value_t *v;
        const char *func;
        const struct timeval *t;
        int r;

        if ((e = scf_entry_create(h)) == NULL) {
                func = "scf_entry_create()";
                goto err;
        }

        if ((v = scf_value_create(h)) == NULL) {
                func = "scf_value_create()";
                goto err;
        }

        r = scf_transaction_property_new(tx, e, name, ty);
        if (r != 0) {
                func = "scf_transaction_property_new()";
                goto err;
        }

        switch (ty) {
        case SCF_TYPE_COUNT:
                scf_value_set_count(v, *(uint64_t *)val);
                break;

        case SCF_TYPE_TIME:
                t = val;
                r = scf_value_set_time(v, t->tv_sec, 1000 * t->tv_usec);
                assert(r == 0);
                break;

        case SCF_TYPE_ASTRING:
                r = scf_value_set_astring(v, val);
                assert(r == 0);
                break;

        default:
                assert(0);
                abort();
        }

        if (scf_entry_add_value(e, v) == 0)
                return (0);

        func = "scf_entry_add_value()";

err:
        uu_warn(gettext("%s failed (%s).\n"), func, scf_strerror(scf_error()));
        return (-1);
}

static void
set_legacy_service(scf_propertygroup_t *pg, const char *script, ino_t inode)
{
        scf_handle_t *h;
        const char *func;
        char *suffix;
        scf_transaction_t *tx;
        struct timeval tstamp;
        ctid_t ctid;
        char *svc_name = NULL;
        int ret;
        uint64_t count;

        h = scf_pg_handle(pg);
        if (h == NULL) {
                func = "scf_pg_handle()";
                goto scferr;
        }

        ret = gettimeofday(&tstamp, NULL);
        assert(ret == 0);

        if (errno = contract_latest(&ctid)) {
                uu_warn(gettext("Could not get contract"));
                goto err;
        }

        tx = scf_transaction_create(h);
        if (tx == NULL) {
                func = "scf_transaction_create()";
                goto scferr;
        }

        if (scf_transaction_start(tx, pg) != 0) {
                func = "scf_transaction_start()";
                goto scferr;
        }

        /*
         * We'd like to use the prettier svc_name, but if path_to_svc_name()
         * fails, we can use the script name anyway.
         */
        svc_name = path_to_svc_name(script);

        if (add_new_property(h, tx, SCF_LEGACY_PROPERTY_NAME, SCF_TYPE_ASTRING,
            (void *)(svc_name ? svc_name : script)) != 0)
                goto err;

        if (add_new_property(h, tx, SCF_PROPERTY_STATE_TIMESTAMP,
            SCF_TYPE_TIME, &tstamp) != 0)
                goto err;

        count = inode;
        if (add_new_property(h, tx, SCF_LEGACY_PROPERTY_INODE,
            SCF_TYPE_COUNT, &count) != 0)
                goto err;

        if ((suffix = script_suffix(script)) != NULL) {
                if (add_new_property(h, tx, SCF_LEGACY_PROPERTY_SUFFIX,
                    SCF_TYPE_ASTRING, (void *)suffix) != 0)
                        goto err;

                free(suffix);
        }

        count = ctid;
        if (add_new_property(h, tx, SCF_PROPERTY_CONTRACT, SCF_TYPE_COUNT,
            &count) != 0)
                goto err;

        for (;;) {
                switch (scf_transaction_commit(tx)) {
                case 1:
                        free(svc_name);
                        return;

                case 0:
                        if (scf_pg_update(pg) == -1) {
                                func = "scf_pg_update()";
                                goto scferr;
                        }
                        continue;

                case -1:
                        func = "scf_transaction_commit()";
                        goto scferr;

                default:
                        assert(0);
                        abort();
                }
        }

scferr:
        uu_warn(gettext("%s failed (%s).\n"), func, scf_strerror(scf_error()));
err:
        uu_die(gettext("Could not commit property values to repository.\n"));
}

int
main(int argc, char *argv[], char *envp[])
{
        const char *restarter, *script, *action;
        boolean_t source = 0;
        int o;
        boolean_t start_flag;
        char **newenv;
        pid_t pid;
        int pipefds[2];
        char c;
        int exitstatus;
        struct stat st;

        scf_propertygroup_t *pg;
        boolean_t pg_ok;

        (void) uu_setpname(argv[0]);
        uu_alt_exit(UU_PROFILE_LAUNCHER);

        /* Make sure we were run by svc.startd. */
        if ((restarter = getenv("SMF_RESTARTER")) == NULL ||
            strcmp(restarter, SCF_SERVICE_STARTD) != 0)
                uu_die(gettext("invocation outside smf(5) inappropriate\n"));

        while ((o = getopt(argc, argv, "s")) != -1) {
                switch (o) {
                case 's':
                        source = 1;
                        break;

                default:
                        usage();
                }
        }

        if (argc - optind != 2)
                usage();

        script = argv[optind];
        action = argv[optind + 1];

        if (strcmp(action, "start") == 0)
                start_flag = 1;
        else if (strcmp(action, "stop") == 0)
                start_flag = 0;
        else
                usage();

        /*
         * Look for the pg & exit if appropriate.  Also, if we're starting,
         * add the pg now so we can exit before launching the script if we
         * have insufficient repository privilege.
         *
         * If any other problem occurs, we carry on anyway.
         */
        pg = get_script_pg(script, start_flag, &pg_ok);

        /* Clean the environment.  Now so we can fail early. */
        if (!source)
                newenv = approved_env(envp);
        else
                newenv = env_without_smf(envp);
        if (newenv == NULL)
                uu_die(gettext(
                    "Could not create new environment: out of memory.\n"));

        if (prepare_contract(script, action) == -1) {
                if (start_flag && pg != NULL)
                        cleanup_pg(pg);

                exit(UU_EXIT_FATAL);
        }

        /* pipe to communicate exec success or failure */
        if (pipe(pipefds) != 0) {
                uu_warn(gettext("Could not create pipe"));

                if (start_flag && pg != NULL)
                        cleanup_pg(pg);

                exit(UU_EXIT_FATAL);
        }

        if (!pg_ok)
                (void) printf(gettext("Executing legacy init script \"%s\" "
                    "despite previous errors.\n"), script);
        else
                (void) printf(gettext("Executing legacy init script \"%s\".\n"),
                    script);
        (void) fflush(stdout);

        if (stat(script, &st) != 0) {
                uu_warn(gettext("Couldn't stat %s (%s).\n"), script,
                    strerror(errno));
                st.st_ino = (ino_t)0;
        }

        pid = fork();
        if (pid < 0) {
                uu_warn(gettext("Could not fork"));

                if (start_flag && pg != NULL)
                        cleanup_pg(pg);

                exit(UU_EXIT_FATAL);
        }

        if (pid == 0) {
                /* child */

                const char *arg1, *arg2, *arg3;

                (void) close(pipefds[0]);
                (void) fcntl(pipefds[1], F_SETFD, FD_CLOEXEC);

                if (!source) {
                        arg1 = "/bin/sh";
                        arg2 = script;
                        arg3 = action;
                } else {
                        arg1 = "/bin/sh";
                        arg2 = "-c";
                        arg3 = script;
                }

                (void) execle(arg1, arg1, arg2, arg3, NULL, newenv);

                uu_warn(gettext("Could not exec \"%s %s %s\""), arg1,
                    arg2, arg3);


                /* Notify parent of the failure. */
                while (write(pipefds[1], &c, 1) != 1) {
                        switch (errno) {
                        case EAGAIN:
                                (void) sleep(1);

                                /* FALLTHROUGH */

                        case EINTR:
                                continue;
                        }

                        uu_warn(gettext("Could not inform parent of error"));
                        break;
                }

                exit(UU_EXIT_FATAL);
        }

        (void) close(pipefds[1]);

        if (read(pipefds[0], &c, sizeof (c)) > 0) {
                if (!start_flag)
                        uu_die(gettext("exec() failed; leaving properties.\n"));
                else {
                        uu_warn(gettext("exec() failed.\n"));
                        if (pg != NULL)
                                cleanup_pg(pg);
                        exit(UU_EXIT_FATAL);
                }
        }

        while (waitpid(pid, &exitstatus, 0) == -1) {
                assert(errno == EINTR);
        }

        if (WIFSIGNALED(exitstatus)) {
                char buf[SIG2STR_MAX];
                (void) sig2str(WTERMSIG(exitstatus), buf);
                (void) printf(gettext("Legacy init script \"%s\" failed due "
                    "to signal %s.\n"), script, buf);
        } else {
                (void) printf(gettext("Legacy init script \"%s\" exited with "
                    "return code %d.\n"), script, WEXITSTATUS(exitstatus));
        }

        if (pg != NULL) {
                if (start_flag)
                        set_legacy_service(pg, script, st.st_ino);
                else
                        cleanup_pg(pg);
                scf_pg_destroy(pg);
        }

        return (UU_EXIT_OK);
}