move libsystemd_core.la sources into core/

1 files changed, 0 insertions, 2113 deletions

diff --git a/src/execute.c b/src/execute.c
deleted file mode 100644
index 179ca7e55c..0000000000
--- a/src/execute.c
+++ /dev/null
@@ -1,2113 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU General Public License as published by
-  the Free Software Foundation; either version 2 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <assert.h>
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <string.h>
-#include <signal.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/prctl.h>
-#include <linux/sched.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <grp.h>
-#include <pwd.h>
-#include <sys/mount.h>
-#include <linux/fs.h>
-#include <linux/oom.h>
-
-#ifdef HAVE_PAM
-#include <security/pam_appl.h>
-#endif
-
-#include "execute.h"
-#include "strv.h"
-#include "macro.h"
-#include "capability.h"
-#include "util.h"
-#include "log.h"
-#include "ioprio.h"
-#include "securebits.h"
-#include "cgroup.h"
-#include "namespace.h"
-#include "tcpwrap.h"
-#include "exit-status.h"
-#include "missing.h"
-#include "utmp-wtmp.h"
-#include "def.h"
-#include "loopback-setup.h"
-
-/* This assumes there is a 'tty' group */
-#define TTY_MODE 0620
-
-static int shift_fds(int fds[], unsigned n_fds) {
-        int start, restart_from;
-
-        if (n_fds <= 0)
-                return 0;
-
-        /* Modifies the fds array! (sorts it) */
-
-        assert(fds);
-
-        start = 0;
-        for (;;) {
-                int i;
-
-                restart_from = -1;
-
-                for (i = start; i < (int) n_fds; i++) {
-                        int nfd;
-
-                        /* Already at right index? */
-                        if (fds[i] == i+3)
-                                continue;
-
-                        if ((nfd = fcntl(fds[i], F_DUPFD, i+3)) < 0)
-                                return -errno;
-
-                        close_nointr_nofail(fds[i]);
-                        fds[i] = nfd;
-
-                        /* Hmm, the fd we wanted isn't free? Then
-                         * let's remember that and try again from here*/
-                        if (nfd != i+3 && restart_from < 0)
-                                restart_from = i;
-                }
-
-                if (restart_from < 0)
-                        break;
-
-                start = restart_from;
-        }
-
-        return 0;
-}
-
-static int flags_fds(const int fds[], unsigned n_fds, bool nonblock) {
-        unsigned i;
-        int r;
-
-        if (n_fds <= 0)
-                return 0;
-
-        assert(fds);
-
-        /* Drops/Sets O_NONBLOCK and FD_CLOEXEC from the file flags */
-
-        for (i = 0; i < n_fds; i++) {
-
-                if ((r = fd_nonblock(fds[i], nonblock)) < 0)
-                        return r;
-
-                /* We unconditionally drop FD_CLOEXEC from the fds,
-                 * since after all we want to pass these fds to our
-                 * children */
-
-                if ((r = fd_cloexec(fds[i], false)) < 0)
-                        return r;
-        }
-
-        return 0;
-}
-
-static const char *tty_path(const ExecContext *context) {
-        assert(context);
-
-        if (context->tty_path)
-                return context->tty_path;
-
-        return "/dev/console";
-}
-
-void exec_context_tty_reset(const ExecContext *context) {
-        assert(context);
-
-        if (context->tty_vhangup)
-                terminal_vhangup(tty_path(context));
-
-        if (context->tty_reset)
-                reset_terminal(tty_path(context));
-
-        if (context->tty_vt_disallocate && context->tty_path)
-                vt_disallocate(context->tty_path);
-}
-
-static int open_null_as(int flags, int nfd) {
-        int fd, r;
-
-        assert(nfd >= 0);
-
-        if ((fd = open("/dev/null", flags|O_NOCTTY)) < 0)
-                return -errno;
-
-        if (fd != nfd) {
-                r = dup2(fd, nfd) < 0 ? -errno : nfd;
-                close_nointr_nofail(fd);
-        } else
-                r = nfd;
-
-        return r;
-}
-
-static int connect_logger_as(const ExecContext *context, ExecOutput output, const char *ident, int nfd) {
-        int fd, r;
-        union sockaddr_union sa;
-
-        assert(context);
-        assert(output < _EXEC_OUTPUT_MAX);
-        assert(ident);
-        assert(nfd >= 0);
-
-        fd = socket(AF_UNIX, SOCK_STREAM, 0);
-        if (fd < 0)
-                return -errno;
-
-        zero(sa);
-        sa.un.sun_family = AF_UNIX;
-        strncpy(sa.un.sun_path, "/run/systemd/journal/stdout", sizeof(sa.un.sun_path));
-
-        r = connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
-        if (r < 0) {
-                close_nointr_nofail(fd);
-                return -errno;
-        }
-
-        if (shutdown(fd, SHUT_RD) < 0) {
-                close_nointr_nofail(fd);
-                return -errno;
-        }
-
-        dprintf(fd,
-                "%s\n"
-                "%i\n"
-                "%i\n"
-                "%i\n"
-                "%i\n"
-                "%i\n",
-                context->syslog_identifier ? context->syslog_identifier : ident,
-                context->syslog_priority,
-                !!context->syslog_level_prefix,
-                output == EXEC_OUTPUT_SYSLOG || output == EXEC_OUTPUT_SYSLOG_AND_CONSOLE,
-                output == EXEC_OUTPUT_KMSG || output == EXEC_OUTPUT_KMSG_AND_CONSOLE,
-                output == EXEC_OUTPUT_SYSLOG_AND_CONSOLE || output == EXEC_OUTPUT_KMSG_AND_CONSOLE || output == EXEC_OUTPUT_JOURNAL_AND_CONSOLE);
-
-        if (fd != nfd) {
-                r = dup2(fd, nfd) < 0 ? -errno : nfd;
-                close_nointr_nofail(fd);
-        } else
-                r = nfd;
-
-        return r;
-}
-static int open_terminal_as(const char *path, mode_t mode, int nfd) {
-        int fd, r;
-
-        assert(path);
-        assert(nfd >= 0);
-
-        if ((fd = open_terminal(path, mode | O_NOCTTY)) < 0)
-                return fd;
-
-        if (fd != nfd) {
-                r = dup2(fd, nfd) < 0 ? -errno : nfd;
-                close_nointr_nofail(fd);
-        } else
-                r = nfd;
-
-        return r;
-}
-
-static bool is_terminal_input(ExecInput i) {
-        return
-                i == EXEC_INPUT_TTY ||
-                i == EXEC_INPUT_TTY_FORCE ||
-                i == EXEC_INPUT_TTY_FAIL;
-}
-
-static int fixup_input(ExecInput std_input, int socket_fd, bool apply_tty_stdin) {
-
-        if (is_terminal_input(std_input) && !apply_tty_stdin)
-                return EXEC_INPUT_NULL;
-
-        if (std_input == EXEC_INPUT_SOCKET && socket_fd < 0)
-                return EXEC_INPUT_NULL;
-
-        return std_input;
-}
-
-static int fixup_output(ExecOutput std_output, int socket_fd) {
-
-        if (std_output == EXEC_OUTPUT_SOCKET && socket_fd < 0)
-                return EXEC_OUTPUT_INHERIT;
-
-        return std_output;
-}
-
-static int setup_input(const ExecContext *context, int socket_fd, bool apply_tty_stdin) {
-        ExecInput i;
-
-        assert(context);
-
-        i = fixup_input(context->std_input, socket_fd, apply_tty_stdin);
-
-        switch (i) {
-
-        case EXEC_INPUT_NULL:
-                return open_null_as(O_RDONLY, STDIN_FILENO);
-
-        case EXEC_INPUT_TTY:
-        case EXEC_INPUT_TTY_FORCE:
-        case EXEC_INPUT_TTY_FAIL: {
-                int fd, r;
-
-                if ((fd = acquire_terminal(
-                                     tty_path(context),
-                                     i == EXEC_INPUT_TTY_FAIL,
-                                     i == EXEC_INPUT_TTY_FORCE,
-                                     false)) < 0)
-                        return fd;
-
-                if (fd != STDIN_FILENO) {
-                        r = dup2(fd, STDIN_FILENO) < 0 ? -errno : STDIN_FILENO;
-                        close_nointr_nofail(fd);
-                } else
-                        r = STDIN_FILENO;
-
-                return r;
-        }
-
-        case EXEC_INPUT_SOCKET:
-                return dup2(socket_fd, STDIN_FILENO) < 0 ? -errno : STDIN_FILENO;
-
-        default:
-                assert_not_reached("Unknown input type");
-        }
-}
-
-static int setup_output(const ExecContext *context, int socket_fd, const char *ident, bool apply_tty_stdin) {
-        ExecOutput o;
-        ExecInput i;
-
-        assert(context);
-        assert(ident);
-
-        i = fixup_input(context->std_input, socket_fd, apply_tty_stdin);
-        o = fixup_output(context->std_output, socket_fd);
-
-        /* This expects the input is already set up */
-
-        switch (o) {
-
-        case EXEC_OUTPUT_INHERIT:
-
-                /* If input got downgraded, inherit the original value */
-                if (i == EXEC_INPUT_NULL && is_terminal_input(context->std_input))
-                        return open_terminal_as(tty_path(context), O_WRONLY, STDOUT_FILENO);
-
-                /* If the input is connected to anything that's not a /dev/null, inherit that... */
-                if (i != EXEC_INPUT_NULL)
-                        return dup2(STDIN_FILENO, STDOUT_FILENO) < 0 ? -errno : STDOUT_FILENO;
-
-                /* If we are not started from PID 1 we just inherit STDOUT from our parent process. */
-                if (getppid() != 1)
-                        return STDOUT_FILENO;
-
-                /* We need to open /dev/null here anew, to get the
-                 * right access mode. So we fall through */
-
-        case EXEC_OUTPUT_NULL:
-                return open_null_as(O_WRONLY, STDOUT_FILENO);
-
-        case EXEC_OUTPUT_TTY:
-                if (is_terminal_input(i))
-                        return dup2(STDIN_FILENO, STDOUT_FILENO) < 0 ? -errno : STDOUT_FILENO;
-
-                /* We don't reset the terminal if this is just about output */
-                return open_terminal_as(tty_path(context), O_WRONLY, STDOUT_FILENO);
-
-        case EXEC_OUTPUT_SYSLOG:
-        case EXEC_OUTPUT_SYSLOG_AND_CONSOLE:
-        case EXEC_OUTPUT_KMSG:
-        case EXEC_OUTPUT_KMSG_AND_CONSOLE:
-        case EXEC_OUTPUT_JOURNAL:
-        case EXEC_OUTPUT_JOURNAL_AND_CONSOLE:
-                return connect_logger_as(context, o, ident, STDOUT_FILENO);
-
-        case EXEC_OUTPUT_SOCKET:
-                assert(socket_fd >= 0);
-                return dup2(socket_fd, STDOUT_FILENO) < 0 ? -errno : STDOUT_FILENO;
-
-        default:
-                assert_not_reached("Unknown output type");
-        }
-}
-
-static int setup_error(const ExecContext *context, int socket_fd, const char *ident, bool apply_tty_stdin) {
-        ExecOutput o, e;
-        ExecInput i;
-
-        assert(context);
-        assert(ident);
-
-        i = fixup_input(context->std_input, socket_fd, apply_tty_stdin);
-        o = fixup_output(context->std_output, socket_fd);
-        e = fixup_output(context->std_error, socket_fd);
-
-        /* This expects the input and output are already set up */
-
-        /* Don't change the stderr file descriptor if we inherit all
-         * the way and are not on a tty */
-        if (e == EXEC_OUTPUT_INHERIT &&
-            o == EXEC_OUTPUT_INHERIT &&
-            i == EXEC_INPUT_NULL &&
-            !is_terminal_input(context->std_input) &&
-            getppid () != 1)
-                return STDERR_FILENO;
-
-        /* Duplicate from stdout if possible */
-        if (e == o || e == EXEC_OUTPUT_INHERIT)
-                return dup2(STDOUT_FILENO, STDERR_FILENO) < 0 ? -errno : STDERR_FILENO;
-
-        switch (e) {
-
-        case EXEC_OUTPUT_NULL:
-                return open_null_as(O_WRONLY, STDERR_FILENO);
-
-        case EXEC_OUTPUT_TTY:
-                if (is_terminal_input(i))
-                        return dup2(STDIN_FILENO, STDERR_FILENO) < 0 ? -errno : STDERR_FILENO;
-
-                /* We don't reset the terminal if this is just about output */
-                return open_terminal_as(tty_path(context), O_WRONLY, STDERR_FILENO);
-
-        case EXEC_OUTPUT_SYSLOG:
-        case EXEC_OUTPUT_SYSLOG_AND_CONSOLE:
-        case EXEC_OUTPUT_KMSG:
-        case EXEC_OUTPUT_KMSG_AND_CONSOLE:
-        case EXEC_OUTPUT_JOURNAL:
-        case EXEC_OUTPUT_JOURNAL_AND_CONSOLE:
-                return connect_logger_as(context, e, ident, STDERR_FILENO);
-
-        case EXEC_OUTPUT_SOCKET:
-                assert(socket_fd >= 0);
-                return dup2(socket_fd, STDERR_FILENO) < 0 ? -errno : STDERR_FILENO;
-
-        default:
-                assert_not_reached("Unknown error type");
-        }
-}
-
-static int chown_terminal(int fd, uid_t uid) {
-        struct stat st;
-
-        assert(fd >= 0);
-
-        /* This might fail. What matters are the results. */
-        (void) fchown(fd, uid, -1);
-        (void) fchmod(fd, TTY_MODE);
-
-        if (fstat(fd, &st) < 0)
-                return -errno;
-
-        if (st.st_uid != uid || (st.st_mode & 0777) != TTY_MODE)
-                return -EPERM;
-
-        return 0;
-}
-
-static int setup_confirm_stdio(const ExecContext *context,
-                               int *_saved_stdin,
-                               int *_saved_stdout) {
-        int fd = -1, saved_stdin, saved_stdout = -1, r;
-
-        assert(context);
-        assert(_saved_stdin);
-        assert(_saved_stdout);
-
-        /* This returns positive EXIT_xxx return values instead of
-         * negative errno style values! */
-
-        if ((saved_stdin = fcntl(STDIN_FILENO, F_DUPFD, 3)) < 0)
-                return EXIT_STDIN;
-
-        if ((saved_stdout = fcntl(STDOUT_FILENO, F_DUPFD, 3)) < 0) {
-                r = EXIT_STDOUT;
-                goto fail;
-        }
-
-        if ((fd = acquire_terminal(
-                             tty_path(context),
-                             context->std_input == EXEC_INPUT_TTY_FAIL,
-                             context->std_input == EXEC_INPUT_TTY_FORCE,
-                             false)) < 0) {
-                r = EXIT_STDIN;
-                goto fail;
-        }
-
-        if (chown_terminal(fd, getuid()) < 0) {
-                r = EXIT_STDIN;
-                goto fail;
-        }
-
-        if (dup2(fd, STDIN_FILENO) < 0) {
-                r = EXIT_STDIN;
-                goto fail;
-        }
-
-        if (dup2(fd, STDOUT_FILENO) < 0) {
-                r = EXIT_STDOUT;
-                goto fail;
-        }
-
-        if (fd >= 2)
-                close_nointr_nofail(fd);
-
-        *_saved_stdin = saved_stdin;
-        *_saved_stdout = saved_stdout;
-
-        return 0;
-
-fail:
-        if (saved_stdout >= 0)
-                close_nointr_nofail(saved_stdout);
-
-        if (saved_stdin >= 0)
-                close_nointr_nofail(saved_stdin);
-
-        if (fd >= 0)
-                close_nointr_nofail(fd);
-
-        return r;
-}
-
-static int restore_confirm_stdio(const ExecContext *context,
-                                 int *saved_stdin,
-                                 int *saved_stdout,
-                                 bool *keep_stdin,
-                                 bool *keep_stdout) {
-
-        assert(context);
-        assert(saved_stdin);
-        assert(*saved_stdin >= 0);
-        assert(saved_stdout);
-        assert(*saved_stdout >= 0);
-
-        /* This returns positive EXIT_xxx return values instead of
-         * negative errno style values! */
-
-        if (is_terminal_input(context->std_input)) {
-
-                /* The service wants terminal input. */
-
-                *keep_stdin = true;
-                *keep_stdout =
-                        context->std_output == EXEC_OUTPUT_INHERIT ||
-                        context->std_output == EXEC_OUTPUT_TTY;
-
-        } else {
-                /* If the service doesn't want a controlling terminal,
-                 * then we need to get rid entirely of what we have
-                 * already. */
-
-                if (release_terminal() < 0)
-                        return EXIT_STDIN;
-
-                if (dup2(*saved_stdin, STDIN_FILENO) < 0)
-                        return EXIT_STDIN;
-
-                if (dup2(*saved_stdout, STDOUT_FILENO) < 0)
-                        return EXIT_STDOUT;
-
-                *keep_stdout = *keep_stdin = false;
-        }
-
-        return 0;
-}
-
-static int enforce_groups(const ExecContext *context, const char *username, gid_t gid) {
-        bool keep_groups = false;
-        int r;
-
-        assert(context);
-
-        /* Lookup and set GID and supplementary group list. Here too
-         * we avoid NSS lookups for gid=0. */
-
-        if (context->group || username) {
-
-                if (context->group) {
-                        const char *g = context->group;
-
-                        if ((r = get_group_creds(&g, &gid)) < 0)
-                                return r;
-                }
-
-                /* First step, initialize groups from /etc/groups */
-                if (username && gid != 0) {
-                        if (initgroups(username, gid) < 0)
-                                return -errno;
-
-                        keep_groups = true;
-                }
-
-                /* Second step, set our gids */
-                if (setresgid(gid, gid, gid) < 0)
-                        return -errno;
-        }
-
-        if (context->supplementary_groups) {
-                int ngroups_max, k;
-                gid_t *gids;
-                char **i;
-
-                /* Final step, initialize any manually set supplementary groups */
-                assert_se((ngroups_max = (int) sysconf(_SC_NGROUPS_MAX)) > 0);
-
-                if (!(gids = new(gid_t, ngroups_max)))
-                        return -ENOMEM;
-
-                if (keep_groups) {
-                        if ((k = getgroups(ngroups_max, gids)) < 0) {
-                                free(gids);
-                                return -errno;
-                        }
-                } else
-                        k = 0;
-
-                STRV_FOREACH(i, context->supplementary_groups) {
-                        const char *g;
-
-                        if (k >= ngroups_max) {
-                                free(gids);
-                                return -E2BIG;
-                        }
-
-                        g = *i;
-                        r = get_group_creds(&g, gids+k);
-                        if (r < 0) {
-                                free(gids);
-                                return r;
-                        }
-
-                        k++;
-                }
-
-                if (setgroups(k, gids) < 0) {
-                        free(gids);
-                        return -errno;
-                }
-
-                free(gids);
-        }
-
-        return 0;
-}
-
-static int enforce_user(const ExecContext *context, uid_t uid) {
-        int r;
-        assert(context);
-
-        /* Sets (but doesn't lookup) the uid and make sure we keep the
-         * capabilities while doing so. */
-
-        if (context->capabilities) {
-                cap_t d;
-                static const cap_value_t bits[] = {
-                        CAP_SETUID,   /* Necessary so that we can run setresuid() below */
-                        CAP_SETPCAP   /* Necessary so that we can set PR_SET_SECUREBITS later on */
-                };
-
-                /* First step: If we need to keep capabilities but
-                 * drop privileges we need to make sure we keep our
-                 * caps, whiel we drop privileges. */
-                if (uid != 0) {
-                        int sb = context->secure_bits|SECURE_KEEP_CAPS;
-
-                        if (prctl(PR_GET_SECUREBITS) != sb)
-                                if (prctl(PR_SET_SECUREBITS, sb) < 0)
-                                        return -errno;
-                }
-
-                /* Second step: set the capabilities. This will reduce
-                 * the capabilities to the minimum we need. */
-
-                if (!(d = cap_dup(context->capabilities)))
-                        return -errno;
-
-                if (cap_set_flag(d, CAP_EFFECTIVE, ELEMENTSOF(bits), bits, CAP_SET) < 0 ||
-                    cap_set_flag(d, CAP_PERMITTED, ELEMENTSOF(bits), bits, CAP_SET) < 0) {
-                        r = -errno;
-                        cap_free(d);
-                        return r;
-                }
-
-                if (cap_set_proc(d) < 0) {
-                        r = -errno;
-                        cap_free(d);
-                        return r;
-                }
-
-                cap_free(d);
-        }
-
-        /* Third step: actually set the uids */
-        if (setresuid(uid, uid, uid) < 0)
-                return -errno;
-
-        /* At this point we should have all necessary capabilities but
-           are otherwise a normal user. However, the caps might got
-           corrupted due to the setresuid() so we need clean them up
-           later. This is done outside of this call. */
-
-        return 0;
-}
-
-#ifdef HAVE_PAM
-
-static int null_conv(
-                int num_msg,
-                const struct pam_message **msg,
-                struct pam_response **resp,
-                void *appdata_ptr) {
-
-        /* We don't support conversations */
-
-        return PAM_CONV_ERR;
-}
-
-static int setup_pam(
-                const char *name,
-                const char *user,
-                const char *tty,
-                char ***pam_env,
-                int fds[], unsigned n_fds) {
-
-        static const struct pam_conv conv = {
-                .conv = null_conv,
-                .appdata_ptr = NULL
-        };
-
-        pam_handle_t *handle = NULL;
-        sigset_t ss, old_ss;
-        int pam_code = PAM_SUCCESS;
-        int err;
-        char **e = NULL;
-        bool close_session = false;
-        pid_t pam_pid = 0, parent_pid;
-
-        assert(name);
-        assert(user);
-        assert(pam_env);
-
-        /* We set up PAM in the parent process, then fork. The child
-         * will then stay around until killed via PR_GET_PDEATHSIG or
-         * systemd via the cgroup logic. It will then remove the PAM
-         * session again. The parent process will exec() the actual
-         * daemon. We do things this way to ensure that the main PID
-         * of the daemon is the one we initially fork()ed. */
-
-        if ((pam_code = pam_start(name, user, &conv, &handle)) != PAM_SUCCESS) {
-                handle = NULL;
-                goto fail;
-        }
-
-        if (tty)
-                if ((pam_code = pam_set_item(handle, PAM_TTY, tty)) != PAM_SUCCESS)
-                        goto fail;
-
-        if ((pam_code = pam_acct_mgmt(handle, PAM_SILENT)) != PAM_SUCCESS)
-                goto fail;
-
-        if ((pam_code = pam_open_session(handle, PAM_SILENT)) != PAM_SUCCESS)
-                goto fail;
-
-        close_session = true;
-
-        if ((!(e = pam_getenvlist(handle)))) {
-                pam_code = PAM_BUF_ERR;
-                goto fail;
-        }
-
-        /* Block SIGTERM, so that we know that it won't get lost in
-         * the child */
-        if (sigemptyset(&ss) < 0 ||
-            sigaddset(&ss, SIGTERM) < 0 ||
-            sigprocmask(SIG_BLOCK, &ss, &old_ss) < 0)
-                goto fail;
-
-        parent_pid = getpid();
-
-        if ((pam_pid = fork()) < 0)
-                goto fail;
-
-        if (pam_pid == 0) {
-                int sig;
-                int r = EXIT_PAM;
-
-                /* The child's job is to reset the PAM session on
-                 * termination */
-
-                /* This string must fit in 10 chars (i.e. the length
-                 * of "/sbin/init"), to look pretty in /bin/ps */
-                rename_process("(sd-pam)");
-
-                /* Make sure we don't keep open the passed fds in this
-                child. We assume that otherwise only those fds are
-                open here that have been opened by PAM. */
-                close_many(fds, n_fds);
-
-                /* Wait until our parent died. This will most likely
-                 * not work since the kernel does not allow
-                 * unprivileged parents kill their privileged children
-                 * this way. We rely on the control groups kill logic
-                 * to do the rest for us. */
-                if (prctl(PR_SET_PDEATHSIG, SIGTERM) < 0)
-                        goto child_finish;
-
-                /* Check if our parent process might already have
-                 * died? */
-                if (getppid() == parent_pid) {
-                        for (;;) {
-                                if (sigwait(&ss, &sig) < 0) {
-                                        if (errno == EINTR)
-                                                continue;
-
-                                        goto child_finish;
-                                }
-
-                                assert(sig == SIGTERM);
-                                break;
-                        }
-                }
-
-                /* If our parent died we'll end the session */
-                if (getppid() != parent_pid)
-                        if ((pam_code = pam_close_session(handle, PAM_DATA_SILENT)) != PAM_SUCCESS)
-                                goto child_finish;
-
-                r = 0;
-
-        child_finish:
-                pam_end(handle, pam_code | PAM_DATA_SILENT);
-                _exit(r);
-        }
-
-        /* If the child was forked off successfully it will do all the
-         * cleanups, so forget about the handle here. */
-        handle = NULL;
-
-        /* Unblock SIGTERM again in the parent */
-        if (sigprocmask(SIG_SETMASK, &old_ss, NULL) < 0)
-                goto fail;
-
-        /* We close the log explicitly here, since the PAM modules
-         * might have opened it, but we don't want this fd around. */
-        closelog();
-
-        *pam_env = e;
-        e = NULL;
-
-        return 0;
-
-fail:
-        if (pam_code != PAM_SUCCESS)
-                err = -EPERM;  /* PAM errors do not map to errno */
-        else
-                err = -errno;
-
-        if (handle) {
-                if (close_session)
-                        pam_code = pam_close_session(handle, PAM_DATA_SILENT);
-
-                pam_end(handle, pam_code | PAM_DATA_SILENT);
-        }
-
-        strv_free(e);
-
-        closelog();
-
-        if (pam_pid > 1) {
-                kill(pam_pid, SIGTERM);
-                kill(pam_pid, SIGCONT);
-        }
-
-        return err;
-}
-#endif
-
-static int do_capability_bounding_set_drop(uint64_t drop) {
-        unsigned long i;
-        cap_t old_cap = NULL, new_cap = NULL;
-        cap_flag_value_t fv;
-        int r;
-
-        /* If we are run as PID 1 we will lack CAP_SETPCAP by default
-         * in the effective set (yes, the kernel drops that when
-         * executing init!), so get it back temporarily so that we can
-         * call PR_CAPBSET_DROP. */
-
-        old_cap = cap_get_proc();
-        if (!old_cap)
-                return -errno;
-
-        if (cap_get_flag(old_cap, CAP_SETPCAP, CAP_EFFECTIVE, &fv) < 0) {
-                r = -errno;
-                goto finish;
-        }
-
-        if (fv != CAP_SET) {
-                static const cap_value_t v = CAP_SETPCAP;
-
-                new_cap = cap_dup(old_cap);
-                if (!new_cap) {
-                        r = -errno;
-                        goto finish;
-                }
-
-                if (cap_set_flag(new_cap, CAP_EFFECTIVE, 1, &v, CAP_SET) < 0) {
-                        r = -errno;
-                        goto finish;
-                }
-
-                if (cap_set_proc(new_cap) < 0) {
-                        r = -errno;
-                        goto finish;
-                }
-        }
-
-        for (i = 0; i <= cap_last_cap(); i++)
-                if (drop & ((uint64_t) 1ULL << (uint64_t) i)) {
-                        if (prctl(PR_CAPBSET_DROP, i) < 0) {
-                                r = -errno;
-                                goto finish;
-                        }
-                }
-
-        r = 0;
-
-finish:
-        if (new_cap)
-                cap_free(new_cap);
-
-        if (old_cap) {
-                cap_set_proc(old_cap);
-                cap_free(old_cap);
-        }
-
-        return r;
-}
-
-static void rename_process_from_path(const char *path) {
-        char process_name[11];
-        const char *p;
-        size_t l;
-
-        /* This resulting string must fit in 10 chars (i.e. the length
-         * of "/sbin/init") to look pretty in /bin/ps */
-
-        p = file_name_from_path(path);
-        if (isempty(p)) {
-                rename_process("(...)");
-                return;
-        }
-
-        l = strlen(p);
-        if (l > 8) {
-                /* The end of the process name is usually more
-                 * interesting, since the first bit might just be
-                 * "systemd-" */
-                p = p + l - 8;
-                l = 8;
-        }
-
-        process_name[0] = '(';
-        memcpy(process_name+1, p, l);
-        process_name[1+l] = ')';
-        process_name[1+l+1] = 0;
-
-        rename_process(process_name);
-}
-
-int exec_spawn(ExecCommand *command,
-               char **argv,
-               const ExecContext *context,
-               int fds[], unsigned n_fds,
-               char **environment,
-               bool apply_permissions,
-               bool apply_chroot,
-               bool apply_tty_stdin,
-               bool confirm_spawn,
-               CGroupBonding *cgroup_bondings,
-               CGroupAttribute *cgroup_attributes,
-               pid_t *ret) {
-
-        pid_t pid;
-        int r;
-        char *line;
-        int socket_fd;
-        char **files_env = NULL;
-
-        assert(command);
-        assert(context);
-        assert(ret);
-        assert(fds || n_fds <= 0);
-
-        if (context->std_input == EXEC_INPUT_SOCKET ||
-            context->std_output == EXEC_OUTPUT_SOCKET ||
-            context->std_error == EXEC_OUTPUT_SOCKET) {
-
-                if (n_fds != 1)
-                        return -EINVAL;
-
-                socket_fd = fds[0];
-
-                fds = NULL;
-                n_fds = 0;
-        } else
-                socket_fd = -1;
-
-        if ((r = exec_context_load_environment(context, &files_env)) < 0) {
-                log_error("Failed to load environment files: %s", strerror(-r));
-                return r;
-        }
-
-        if (!argv)
-                argv = command->argv;
-
-        if (!(line = exec_command_line(argv))) {
-                r = -ENOMEM;
-                goto fail_parent;
-        }
-
-        log_debug("About to execute: %s", line);
-        free(line);
-
-        r = cgroup_bonding_realize_list(cgroup_bondings);
-        if (r < 0)
-                goto fail_parent;
-
-        cgroup_attribute_apply_list(cgroup_attributes, cgroup_bondings);
-
-        if ((pid = fork()) < 0) {
-                r = -errno;
-                goto fail_parent;
-        }
-
-        if (pid == 0) {
-                int i, err;
-                sigset_t ss;
-                const char *username = NULL, *home = NULL;
-                uid_t uid = (uid_t) -1;
-                gid_t gid = (gid_t) -1;
-                char **our_env = NULL, **pam_env = NULL, **final_env = NULL, **final_argv = NULL;
-                unsigned n_env = 0;
-                int saved_stdout = -1, saved_stdin = -1;
-                bool keep_stdout = false, keep_stdin = false, set_access = false;
-
-                /* child */
-
-                rename_process_from_path(command->path);
-
-                /* We reset exactly these signals, since they are the
-                 * only ones we set to SIG_IGN in the main daemon. All
-                 * others we leave untouched because we set them to
-                 * SIG_DFL or a valid handler initially, both of which
-                 * will be demoted to SIG_DFL. */
-                default_signals(SIGNALS_CRASH_HANDLER,
-                                SIGNALS_IGNORE, -1);
-
-                if (context->ignore_sigpipe)
-                        ignore_signals(SIGPIPE, -1);
-
-                assert_se(sigemptyset(&ss) == 0);
-                if (sigprocmask(SIG_SETMASK, &ss, NULL) < 0) {
-                        err = -errno;
-                        r = EXIT_SIGNAL_MASK;
-                        goto fail_child;
-                }
-
-                /* Close sockets very early to make sure we don't
-                 * block init reexecution because it cannot bind its
-                 * sockets */
-                log_forget_fds();
-                err = close_all_fds(socket_fd >= 0 ? &socket_fd : fds,
-                                           socket_fd >= 0 ? 1 : n_fds);
-                if (err < 0) {
-                        r = EXIT_FDS;
-                        goto fail_child;
-                }
-
-                if (!context->same_pgrp)
-                        if (setsid() < 0) {
-                                err = -errno;
-                                r = EXIT_SETSID;
-                                goto fail_child;
-                        }
-
-                if (context->tcpwrap_name) {
-                        if (socket_fd >= 0)
-                                if (!socket_tcpwrap(socket_fd, context->tcpwrap_name)) {
-                                        err = -EACCES;
-                                        r = EXIT_TCPWRAP;
-                                        goto fail_child;
-                                }
-
-                        for (i = 0; i < (int) n_fds; i++) {
-                                if (!socket_tcpwrap(fds[i], context->tcpwrap_name)) {
-                                        err = -EACCES;
-                                        r = EXIT_TCPWRAP;
-                                        goto fail_child;
-                                }
-                        }
-                }
-
-                exec_context_tty_reset(context);
-
-                /* We skip the confirmation step if we shall not apply the TTY */
-                if (confirm_spawn &&
-                    (!is_terminal_input(context->std_input) || apply_tty_stdin)) {
-                        char response;
-
-                        /* Set up terminal for the question */
-                        if ((r = setup_confirm_stdio(context,
-                                                     &saved_stdin, &saved_stdout))) {
-                                err = -errno;
-                                goto fail_child;
-                        }
-
-                        /* Now ask the question. */
-                        if (!(line = exec_command_line(argv))) {
-                                err = -ENOMEM;
-                                r = EXIT_MEMORY;
-                                goto fail_child;
-                        }
-
-                        r = ask(&response, "yns", "Execute %s? [Yes, No, Skip] ", line);
-                        free(line);
-
-                        if (r < 0 || response == 'n') {
-                                err = -ECANCELED;
-                                r = EXIT_CONFIRM;
-                                goto fail_child;
-                        } else if (response == 's') {
-                                err = r = 0;
-                                goto fail_child;
-                        }
-
-                        /* Release terminal for the question */
-                        if ((r = restore_confirm_stdio(context,
-                                                       &saved_stdin, &saved_stdout,
-                                                       &keep_stdin, &keep_stdout))) {
-                                err = -errno;
-                                goto fail_child;
-                        }
-                }
-
-                /* If a socket is connected to STDIN/STDOUT/STDERR, we
-                 * must sure to drop O_NONBLOCK */
-                if (socket_fd >= 0)
-                        fd_nonblock(socket_fd, false);
-
-                if (!keep_stdin) {
-                        err = setup_input(context, socket_fd, apply_tty_stdin);
-                        if (err < 0) {
-                                r = EXIT_STDIN;
-                                goto fail_child;
-                        }
-                }
-
-                if (!keep_stdout) {
-                        err = setup_output(context, socket_fd, file_name_from_path(command->path), apply_tty_stdin);
-                        if (err < 0) {
-                                r = EXIT_STDOUT;
-                                goto fail_child;
-                        }
-                }
-
-                err = setup_error(context, socket_fd, file_name_from_path(command->path), apply_tty_stdin);
-                if (err < 0) {
-                        r = EXIT_STDERR;
-                        goto fail_child;
-                }
-
-                if (cgroup_bondings) {
-                        err = cgroup_bonding_install_list(cgroup_bondings, 0);
-                        if (err < 0) {
-                                r = EXIT_CGROUP;
-                                goto fail_child;
-                        }
-                }
-
-                if (context->oom_score_adjust_set) {
-                        char t[16];
-
-                        snprintf(t, sizeof(t), "%i", context->oom_score_adjust);
-                        char_array_0(t);
-
-                        if (write_one_line_file("/proc/self/oom_score_adj", t) < 0) {
-                                /* Compatibility with Linux <= 2.6.35 */
-
-                                int adj;
-
-                                adj = (context->oom_score_adjust * -OOM_DISABLE) / OOM_SCORE_ADJ_MAX;
-                                adj = CLAMP(adj, OOM_DISABLE, OOM_ADJUST_MAX);
-
-                                snprintf(t, sizeof(t), "%i", adj);
-                                char_array_0(t);
-
-                                if (write_one_line_file("/proc/self/oom_adj", t) < 0
-                                    && errno != EACCES) {
-                                        err = -errno;
-                                        r = EXIT_OOM_ADJUST;
-                                        goto fail_child;
-                                }
-                        }
-                }
-
-                if (context->nice_set)
-                        if (setpriority(PRIO_PROCESS, 0, context->nice) < 0) {
-                                err = -errno;
-                                r = EXIT_NICE;
-                                goto fail_child;
-                        }
-
-                if (context->cpu_sched_set) {
-                        struct sched_param param;
-
-                        zero(param);
-                        param.sched_priority = context->cpu_sched_priority;
-
-                        if (sched_setscheduler(0, context->cpu_sched_policy |
-                                               (context->cpu_sched_reset_on_fork ? SCHED_RESET_ON_FORK : 0), &param) < 0) {
-                                err = -errno;
-                                r = EXIT_SETSCHEDULER;
-                                goto fail_child;
-                        }
-                }
-
-                if (context->cpuset)
-                        if (sched_setaffinity(0, CPU_ALLOC_SIZE(context->cpuset_ncpus), context->cpuset) < 0) {
-                                err = -errno;
-                                r = EXIT_CPUAFFINITY;
-                                goto fail_child;
-                        }
-
-                if (context->ioprio_set)
-                        if (ioprio_set(IOPRIO_WHO_PROCESS, 0, context->ioprio) < 0) {
-                                err = -errno;
-                                r = EXIT_IOPRIO;
-                                goto fail_child;
-                        }
-
-                if (context->timer_slack_nsec_set)
-                        if (prctl(PR_SET_TIMERSLACK, context->timer_slack_nsec) < 0) {
-                                err = -errno;
-                                r = EXIT_TIMERSLACK;
-                                goto fail_child;
-                        }
-
-                if (context->utmp_id)
-                        utmp_put_init_process(context->utmp_id, getpid(), getsid(0), context->tty_path);
-
-                if (context->user) {
-                        username = context->user;
-                        err = get_user_creds(&username, &uid, &gid, &home);
-                        if (err < 0) {
-                                r = EXIT_USER;
-                                goto fail_child;
-                        }
-
-                        if (is_terminal_input(context->std_input)) {
-                                err = chown_terminal(STDIN_FILENO, uid);
-                                if (err < 0) {
-                                        r = EXIT_STDIN;
-                                        goto fail_child;
-                                }
-                        }
-
-                        if (cgroup_bondings && context->control_group_modify) {
-                                err = cgroup_bonding_set_group_access_list(cgroup_bondings, 0755, uid, gid);
-                                if (err >= 0)
-                                        err = cgroup_bonding_set_task_access_list(cgroup_bondings, 0644, uid, gid, context->control_group_persistent);
-                                if (err < 0) {
-                                        r = EXIT_CGROUP;
-                                        goto fail_child;
-                                }
-
-                                set_access = true;
-                        }
-                }
-
-                if (cgroup_bondings && !set_access && context->control_group_persistent >= 0)  {
-                        err = cgroup_bonding_set_task_access_list(cgroup_bondings, (mode_t) -1, (uid_t) -1, (uid_t) -1, context->control_group_persistent);
-                        if (err < 0) {
-                                r = EXIT_CGROUP;
-                                goto fail_child;
-                        }
-                }
-
-                if (apply_permissions) {
-                        err = enforce_groups(context, username, gid);
-                        if (err < 0) {
-                                r = EXIT_GROUP;
-                                goto fail_child;
-                        }
-                }
-
-                umask(context->umask);
-
-#ifdef HAVE_PAM
-                if (context->pam_name && username) {
-                        err = setup_pam(context->pam_name, username, context->tty_path, &pam_env, fds, n_fds);
-                        if (err < 0) {
-                                r = EXIT_PAM;
-                                goto fail_child;
-                        }
-                }
-#endif
-                if (context->private_network) {
-                        if (unshare(CLONE_NEWNET) < 0) {
-                                err = -errno;
-                                r = EXIT_NETWORK;
-                                goto fail_child;
-                        }
-
-                        loopback_setup();
-                }
-
-                if (strv_length(context->read_write_dirs) > 0 ||
-                    strv_length(context->read_only_dirs) > 0 ||
-                    strv_length(context->inaccessible_dirs) > 0 ||
-                    context->mount_flags != MS_SHARED ||
-                    context->private_tmp) {
-                        err = setup_namespace(context->read_write_dirs,
-                                              context->read_only_dirs,
-                                              context->inaccessible_dirs,
-                                              context->private_tmp,
-                                              context->mount_flags);
-                        if (err < 0) {
-                                r = EXIT_NAMESPACE;
-                                goto fail_child;
-                        }
-                }
-
-                if (apply_chroot) {
-                        if (context->root_directory)
-                                if (chroot(context->root_directory) < 0) {
-                                        err = -errno;
-                                        r = EXIT_CHROOT;
-                                        goto fail_child;
-                                }
-
-                        if (chdir(context->working_directory ? context->working_directory : "/") < 0) {
-                                err = -errno;
-                                r = EXIT_CHDIR;
-                                goto fail_child;
-                        }
-                } else {
-
-                        char *d;
-
-                        if (asprintf(&d, "%s/%s",
-                                     context->root_directory ? context->root_directory : "",
-                                     context->working_directory ? context->working_directory : "") < 0) {
-                                err = -ENOMEM;
-                                r = EXIT_MEMORY;
-                                goto fail_child;
-                        }
-
-                        if (chdir(d) < 0) {
-                                err = -errno;
-                                free(d);
-                                r = EXIT_CHDIR;
-                                goto fail_child;
-                        }
-
-                        free(d);
-                }
-
-                /* We repeat the fd closing here, to make sure that
-                 * nothing is leaked from the PAM modules */
-                err = close_all_fds(fds, n_fds);
-                if (err >= 0)
-                        err = shift_fds(fds, n_fds);
-                if (err >= 0)
-                        err = flags_fds(fds, n_fds, context->non_blocking);
-                if (err < 0) {
-                        r = EXIT_FDS;
-                        goto fail_child;
-                }
-
-                if (apply_permissions) {
-
-                        for (i = 0; i < RLIMIT_NLIMITS; i++) {
-                                if (!context->rlimit[i])
-                                        continue;
-
-                                if (setrlimit(i, context->rlimit[i]) < 0) {
-                                        err = -errno;
-                                        r = EXIT_LIMITS;
-                                        goto fail_child;
-                                }
-                        }
-
-                        if (context->capability_bounding_set_drop) {
-                                err = do_capability_bounding_set_drop(context->capability_bounding_set_drop);
-                                if (err < 0) {
-                                        r = EXIT_CAPABILITIES;
-                                        goto fail_child;
-                                }
-                        }
-
-                        if (context->user) {
-                                err = enforce_user(context, uid);
-                                if (err < 0) {
-                                        r = EXIT_USER;
-                                        goto fail_child;
-                                }
-                        }
-
-                        /* PR_GET_SECUREBITS is not privileged, while
-                         * PR_SET_SECUREBITS is. So to suppress
-                         * potential EPERMs we'll try not to call
-                         * PR_SET_SECUREBITS unless necessary. */
-                        if (prctl(PR_GET_SECUREBITS) != context->secure_bits)
-                                if (prctl(PR_SET_SECUREBITS, context->secure_bits) < 0) {
-                                        err = -errno;
-                                        r = EXIT_SECUREBITS;
-                                        goto fail_child;
-                                }
-
-                        if (context->capabilities)
-                                if (cap_set_proc(context->capabilities) < 0) {
-                                        err = -errno;
-                                        r = EXIT_CAPABILITIES;
-                                        goto fail_child;
-                                }
-                }
-
-                if (!(our_env = new0(char*, 7))) {
-                        err = -ENOMEM;
-                        r = EXIT_MEMORY;
-                        goto fail_child;
-                }
-
-                if (n_fds > 0)
-                        if (asprintf(our_env + n_env++, "LISTEN_PID=%lu", (unsigned long) getpid()) < 0 ||
-                            asprintf(our_env + n_env++, "LISTEN_FDS=%u", n_fds) < 0) {
-                                err = -ENOMEM;
-                                r = EXIT_MEMORY;
-                                goto fail_child;
-                        }
-
-                if (home)
-                        if (asprintf(our_env + n_env++, "HOME=%s", home) < 0) {
-                                err = -ENOMEM;
-                                r = EXIT_MEMORY;
-                                goto fail_child;
-                        }
-
-                if (username)
-                        if (asprintf(our_env + n_env++, "LOGNAME=%s", username) < 0 ||
-                            asprintf(our_env + n_env++, "USER=%s", username) < 0) {
-                                err = -ENOMEM;
-                                r = EXIT_MEMORY;
-                                goto fail_child;
-                        }
-
-                if (is_terminal_input(context->std_input) ||
-                    context->std_output == EXEC_OUTPUT_TTY ||
-                    context->std_error == EXEC_OUTPUT_TTY)
-                        if (!(our_env[n_env++] = strdup(default_term_for_tty(tty_path(context))))) {
-                                err = -ENOMEM;
-                                r = EXIT_MEMORY;
-                                goto fail_child;
-                        }
-
-                assert(n_env <= 7);
-
-                if (!(final_env = strv_env_merge(
-                                      5,
-                                      environment,
-                                      our_env,
-                                      context->environment,
-                                      files_env,
-                                      pam_env,
-                                      NULL))) {
-                        err = -ENOMEM;
-                        r = EXIT_MEMORY;
-                        goto fail_child;
-                }
-
-                if (!(final_argv = replace_env_argv(argv, final_env))) {
-                        err = -ENOMEM;
-                        r = EXIT_MEMORY;
-                        goto fail_child;
-                }
-
-                final_env = strv_env_clean(final_env);
-
-                execve(command->path, final_argv, final_env);
-                err = -errno;
-                r = EXIT_EXEC;
-
-        fail_child:
-                if (r != 0) {
-                        log_open();
-                        log_warning("Failed at step %s spawning %s: %s",
-                                    exit_status_to_string(r, EXIT_STATUS_SYSTEMD),
-                                    command->path, strerror(-err));
-                }
-
-                strv_free(our_env);
-                strv_free(final_env);
-                strv_free(pam_env);
-                strv_free(files_env);
-                strv_free(final_argv);
-
-                if (saved_stdin >= 0)
-                        close_nointr_nofail(saved_stdin);
-
-                if (saved_stdout >= 0)
-                        close_nointr_nofail(saved_stdout);
-
-                _exit(r);
-        }
-
-        strv_free(files_env);
-
-        /* We add the new process to the cgroup both in the child (so
-         * that we can be sure that no user code is ever executed
-         * outside of the cgroup) and in the parent (so that we can be
-         * sure that when we kill the cgroup the process will be
-         * killed too). */
-        if (cgroup_bondings)
-                cgroup_bonding_install_list(cgroup_bondings, pid);
-
-        log_debug("Forked %s as %lu", command->path, (unsigned long) pid);
-
-        exec_status_start(&command->exec_status, pid);
-
-        *ret = pid;
-        return 0;
-
-fail_parent:
-        strv_free(files_env);
-
-        return r;
-}
-
-void exec_context_init(ExecContext *c) {
-        assert(c);
-
-        c->umask = 0022;
-        c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 0);
-        c->cpu_sched_policy = SCHED_OTHER;
-        c->syslog_priority = LOG_DAEMON|LOG_INFO;
-        c->syslog_level_prefix = true;
-        c->mount_flags = MS_SHARED;
-        c->kill_signal = SIGTERM;
-        c->send_sigkill = true;
-        c->control_group_persistent = -1;
-        c->ignore_sigpipe = true;
-}
-
-void exec_context_done(ExecContext *c) {
-        unsigned l;
-
-        assert(c);
-
-        strv_free(c->environment);
-        c->environment = NULL;
-
-        strv_free(c->environment_files);
-        c->environment_files = NULL;
-
-        for (l = 0; l < ELEMENTSOF(c->rlimit); l++) {
-                free(c->rlimit[l]);
-                c->rlimit[l] = NULL;
-        }
-
-        free(c->working_directory);
-        c->working_directory = NULL;
-        free(c->root_directory);
-        c->root_directory = NULL;
-
-        free(c->tty_path);
-        c->tty_path = NULL;
-
-        free(c->tcpwrap_name);
-        c->tcpwrap_name = NULL;
-
-        free(c->syslog_identifier);
-        c->syslog_identifier = NULL;
-
-        free(c->user);
-        c->user = NULL;
-
-        free(c->group);
-        c->group = NULL;
-
-        strv_free(c->supplementary_groups);
-        c->supplementary_groups = NULL;
-
-        free(c->pam_name);
-        c->pam_name = NULL;
-
-        if (c->capabilities) {
-                cap_free(c->capabilities);
-                c->capabilities = NULL;
-        }
-
-        strv_free(c->read_only_dirs);
-        c->read_only_dirs = NULL;
-
-        strv_free(c->read_write_dirs);
-        c->read_write_dirs = NULL;
-
-        strv_free(c->inaccessible_dirs);
-        c->inaccessible_dirs = NULL;
-
-        if (c->cpuset)
-                CPU_FREE(c->cpuset);
-
-        free(c->utmp_id);
-        c->utmp_id = NULL;
-}
-
-void exec_command_done(ExecCommand *c) {
-        assert(c);
-
-        free(c->path);
-        c->path = NULL;
-
-        strv_free(c->argv);
-        c->argv = NULL;
-}
-
-void exec_command_done_array(ExecCommand *c, unsigned n) {
-        unsigned i;
-
-        for (i = 0; i < n; i++)
-                exec_command_done(c+i);
-}
-
-void exec_command_free_list(ExecCommand *c) {
-        ExecCommand *i;
-
-        while ((i = c)) {
-                LIST_REMOVE(ExecCommand, command, c, i);
-                exec_command_done(i);
-                free(i);
-        }
-}
-
-void exec_command_free_array(ExecCommand **c, unsigned n) {
-        unsigned i;
-
-        for (i = 0; i < n; i++) {
-                exec_command_free_list(c[i]);
-                c[i] = NULL;
-        }
-}
-
-int exec_context_load_environment(const ExecContext *c, char ***l) {
-        char **i, **r = NULL;
-
-        assert(c);
-        assert(l);
-
-        STRV_FOREACH(i, c->environment_files) {
-                char *fn;
-                int k;
-                bool ignore = false;
-                char **p;
-
-                fn = *i;
-
-                if (fn[0] == '-') {
-                        ignore = true;
-                        fn ++;
-                }
-
-                if (!path_is_absolute(fn)) {
-
-                        if (ignore)
-                                continue;
-
-                        strv_free(r);
-                        return -EINVAL;
-                }
-
-                if ((k = load_env_file(fn, &p)) < 0) {
-
-                        if (ignore)
-                                continue;
-
-                        strv_free(r);
-                        return k;
-                }
-
-                if (r == NULL)
-                        r = p;
-                else {
-                        char **m;
-
-                        m = strv_env_merge(2, r, p);
-                        strv_free(r);
-                        strv_free(p);
-
-                        if (!m)
-                                return -ENOMEM;
-
-                        r = m;
-                }
-        }
-
-        *l = r;
-
-        return 0;
-}
-
-static void strv_fprintf(FILE *f, char **l) {
-        char **g;
-
-        assert(f);
-
-        STRV_FOREACH(g, l)
-                fprintf(f, " %s", *g);
-}
-
-void exec_context_dump(ExecContext *c, FILE* f, const char *prefix) {
-        char ** e;
-        unsigned i;
-
-        assert(c);
-        assert(f);
-
-        if (!prefix)
-                prefix = "";
-
-        fprintf(f,
-                "%sUMask: %04o\n"
-                "%sWorkingDirectory: %s\n"
-                "%sRootDirectory: %s\n"
-                "%sNonBlocking: %s\n"
-                "%sPrivateTmp: %s\n"
-                "%sControlGroupModify: %s\n"
-                "%sControlGroupPersistent: %s\n"
-                "%sPrivateNetwork: %s\n",
-                prefix, c->umask,
-                prefix, c->working_directory ? c->working_directory : "/",
-                prefix, c->root_directory ? c->root_directory : "/",
-                prefix, yes_no(c->non_blocking),
-                prefix, yes_no(c->private_tmp),
-                prefix, yes_no(c->control_group_modify),
-                prefix, yes_no(c->control_group_persistent),
-                prefix, yes_no(c->private_network));
-
-        STRV_FOREACH(e, c->environment)
-                fprintf(f, "%sEnvironment: %s\n", prefix, *e);
-
-        STRV_FOREACH(e, c->environment_files)
-                fprintf(f, "%sEnvironmentFile: %s\n", prefix, *e);
-
-        if (c->tcpwrap_name)
-                fprintf(f,
-                        "%sTCPWrapName: %s\n",
-                        prefix, c->tcpwrap_name);
-
-        if (c->nice_set)
-                fprintf(f,
-                        "%sNice: %i\n",
-                        prefix, c->nice);
-
-        if (c->oom_score_adjust_set)
-                fprintf(f,
-                        "%sOOMScoreAdjust: %i\n",
-                        prefix, c->oom_score_adjust);
-
-        for (i = 0; i < RLIM_NLIMITS; i++)
-                if (c->rlimit[i])
-                        fprintf(f, "%s%s: %llu\n", prefix, rlimit_to_string(i), (unsigned long long) c->rlimit[i]->rlim_max);
-
-        if (c->ioprio_set)
-                fprintf(f,
-                        "%sIOSchedulingClass: %s\n"
-                        "%sIOPriority: %i\n",
-                        prefix, ioprio_class_to_string(IOPRIO_PRIO_CLASS(c->ioprio)),
-                        prefix, (int) IOPRIO_PRIO_DATA(c->ioprio));
-
-        if (c->cpu_sched_set)
-                fprintf(f,
-                        "%sCPUSchedulingPolicy: %s\n"
-                        "%sCPUSchedulingPriority: %i\n"
-                        "%sCPUSchedulingResetOnFork: %s\n",
-                        prefix, sched_policy_to_string(c->cpu_sched_policy),
-                        prefix, c->cpu_sched_priority,
-                        prefix, yes_no(c->cpu_sched_reset_on_fork));
-
-        if (c->cpuset) {
-                fprintf(f, "%sCPUAffinity:", prefix);
-                for (i = 0; i < c->cpuset_ncpus; i++)
-                        if (CPU_ISSET_S(i, CPU_ALLOC_SIZE(c->cpuset_ncpus), c->cpuset))
-                                fprintf(f, " %i", i);
-                fputs("\n", f);
-        }
-
-        if (c->timer_slack_nsec_set)
-                fprintf(f, "%sTimerSlackNSec: %lu\n", prefix, c->timer_slack_nsec);
-
-        fprintf(f,
-                "%sStandardInput: %s\n"
-                "%sStandardOutput: %s\n"
-                "%sStandardError: %s\n",
-                prefix, exec_input_to_string(c->std_input),
-                prefix, exec_output_to_string(c->std_output),
-                prefix, exec_output_to_string(c->std_error));
-
-        if (c->tty_path)
-                fprintf(f,
-                        "%sTTYPath: %s\n"
-                        "%sTTYReset: %s\n"
-                        "%sTTYVHangup: %s\n"
-                        "%sTTYVTDisallocate: %s\n",
-                        prefix, c->tty_path,
-                        prefix, yes_no(c->tty_reset),
-                        prefix, yes_no(c->tty_vhangup),
-                        prefix, yes_no(c->tty_vt_disallocate));
-
-        if (c->std_output == EXEC_OUTPUT_SYSLOG || c->std_output == EXEC_OUTPUT_KMSG || c->std_output == EXEC_OUTPUT_JOURNAL ||
-            c->std_output == EXEC_OUTPUT_SYSLOG_AND_CONSOLE || c->std_output == EXEC_OUTPUT_KMSG_AND_CONSOLE || c->std_output == EXEC_OUTPUT_JOURNAL_AND_CONSOLE ||
-            c->std_error == EXEC_OUTPUT_SYSLOG || c->std_error == EXEC_OUTPUT_KMSG || c->std_error == EXEC_OUTPUT_JOURNAL ||
-            c->std_error == EXEC_OUTPUT_SYSLOG_AND_CONSOLE || c->std_error == EXEC_OUTPUT_KMSG_AND_CONSOLE || c->std_error == EXEC_OUTPUT_JOURNAL_AND_CONSOLE)
-                fprintf(f,
-                        "%sSyslogFacility: %s\n"
-                        "%sSyslogLevel: %s\n",
-                        prefix, log_facility_unshifted_to_string(c->syslog_priority >> 3),
-                        prefix, log_level_to_string(LOG_PRI(c->syslog_priority)));
-
-        if (c->capabilities) {
-                char *t;
-                if ((t = cap_to_text(c->capabilities, NULL))) {
-                        fprintf(f, "%sCapabilities: %s\n",
-                                prefix, t);
-                        cap_free(t);
-                }
-        }
-
-        if (c->secure_bits)
-                fprintf(f, "%sSecure Bits:%s%s%s%s%s%s\n",
-                        prefix,
-                        (c->secure_bits & SECURE_KEEP_CAPS) ? " keep-caps" : "",
-                        (c->secure_bits & SECURE_KEEP_CAPS_LOCKED) ? " keep-caps-locked" : "",
-                        (c->secure_bits & SECURE_NO_SETUID_FIXUP) ? " no-setuid-fixup" : "",
-                        (c->secure_bits & SECURE_NO_SETUID_FIXUP_LOCKED) ? " no-setuid-fixup-locked" : "",
-                        (c->secure_bits & SECURE_NOROOT) ? " noroot" : "",
-                        (c->secure_bits & SECURE_NOROOT_LOCKED) ? "noroot-locked" : "");
-
-        if (c->capability_bounding_set_drop) {
-                unsigned long l;
-                fprintf(f, "%sCapabilityBoundingSet:", prefix);
-
-                for (l = 0; l <= cap_last_cap(); l++)
-                        if (!(c->capability_bounding_set_drop & ((uint64_t) 1ULL << (uint64_t) l))) {
-                                char *t;
-
-                                if ((t = cap_to_name(l))) {
-                                        fprintf(f, " %s", t);
-                                        cap_free(t);
-                                }
-                        }
-
-                fputs("\n", f);
-        }
-
-        if (c->user)
-                fprintf(f, "%sUser: %s\n", prefix, c->user);
-        if (c->group)
-                fprintf(f, "%sGroup: %s\n", prefix, c->group);
-
-        if (strv_length(c->supplementary_groups) > 0) {
-                fprintf(f, "%sSupplementaryGroups:", prefix);
-                strv_fprintf(f, c->supplementary_groups);
-                fputs("\n", f);
-        }
-
-        if (c->pam_name)
-                fprintf(f, "%sPAMName: %s\n", prefix, c->pam_name);
-
-        if (strv_length(c->read_write_dirs) > 0) {
-                fprintf(f, "%sReadWriteDirs:", prefix);
-                strv_fprintf(f, c->read_write_dirs);
-                fputs("\n", f);
-        }
-
-        if (strv_length(c->read_only_dirs) > 0) {
-                fprintf(f, "%sReadOnlyDirs:", prefix);
-                strv_fprintf(f, c->read_only_dirs);
-                fputs("\n", f);
-        }
-
-        if (strv_length(c->inaccessible_dirs) > 0) {
-                fprintf(f, "%sInaccessibleDirs:", prefix);
-                strv_fprintf(f, c->inaccessible_dirs);
-                fputs("\n", f);
-        }
-
-        fprintf(f,
-                "%sKillMode: %s\n"
-                "%sKillSignal: SIG%s\n"
-                "%sSendSIGKILL: %s\n"
-                "%sIgnoreSIGPIPE: %s\n",
-                prefix, kill_mode_to_string(c->kill_mode),
-                prefix, signal_to_string(c->kill_signal),
-                prefix, yes_no(c->send_sigkill),
-                prefix, yes_no(c->ignore_sigpipe));
-
-        if (c->utmp_id)
-                fprintf(f,
-                        "%sUtmpIdentifier: %s\n",
-                        prefix, c->utmp_id);
-}
-
-void exec_status_start(ExecStatus *s, pid_t pid) {
-        assert(s);
-
-        zero(*s);
-        s->pid = pid;
-        dual_timestamp_get(&s->start_timestamp);
-}
-
-void exec_status_exit(ExecStatus *s, ExecContext *context, pid_t pid, int code, int status) {
-        assert(s);
-
-        if (s->pid && s->pid != pid)
-                zero(*s);
-
-        s->pid = pid;
-        dual_timestamp_get(&s->exit_timestamp);
-
-        s->code = code;
-        s->status = status;
-
-        if (context) {
-                if (context->utmp_id)
-                        utmp_put_dead_process(context->utmp_id, pid, code, status);
-
-                exec_context_tty_reset(context);
-        }
-}
-
-void exec_status_dump(ExecStatus *s, FILE *f, const char *prefix) {
-        char buf[FORMAT_TIMESTAMP_MAX];
-
-        assert(s);
-        assert(f);
-
-        if (!prefix)
-                prefix = "";
-
-        if (s->pid <= 0)
-                return;
-
-        fprintf(f,
-                "%sPID: %lu\n",
-                prefix, (unsigned long) s->pid);
-
-        if (s->start_timestamp.realtime > 0)
-                fprintf(f,
-                        "%sStart Timestamp: %s\n",
-                        prefix, format_timestamp(buf, sizeof(buf), s->start_timestamp.realtime));
-
-        if (s->exit_timestamp.realtime > 0)
-                fprintf(f,
-                        "%sExit Timestamp: %s\n"
-                        "%sExit Code: %s\n"
-                        "%sExit Status: %i\n",
-                        prefix, format_timestamp(buf, sizeof(buf), s->exit_timestamp.realtime),
-                        prefix, sigchld_code_to_string(s->code),
-                        prefix, s->status);
-}
-
-char *exec_command_line(char **argv) {
-        size_t k;
-        char *n, *p, **a;
-        bool first = true;
-
-        assert(argv);
-
-        k = 1;
-        STRV_FOREACH(a, argv)
-                k += strlen(*a)+3;
-
-        if (!(n = new(char, k)))
-                return NULL;
-
-        p = n;
-        STRV_FOREACH(a, argv) {
-
-                if (!first)
-                        *(p++) = ' ';
-                else
-                        first = false;
-
-                if (strpbrk(*a, WHITESPACE)) {
-                        *(p++) = '\'';
-                        p = stpcpy(p, *a);
-                        *(p++) = '\'';
-                } else
-                        p = stpcpy(p, *a);
-
-        }
-
-        *p = 0;
-
-        /* FIXME: this doesn't really handle arguments that have
-         * spaces and ticks in them */
-
-        return n;
-}
-
-void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix) {
-        char *p2;
-        const char *prefix2;
-
-        char *cmd;
-
-        assert(c);
-        assert(f);
-
-        if (!prefix)
-                prefix = "";
-        p2 = strappend(prefix, "\t");
-        prefix2 = p2 ? p2 : prefix;
-
-        cmd = exec_command_line(c->argv);
-
-        fprintf(f,
-                "%sCommand Line: %s\n",
-                prefix, cmd ? cmd : strerror(ENOMEM));
-
-        free(cmd);
-
-        exec_status_dump(&c->exec_status, f, prefix2);
-
-        free(p2);
-}
-
-void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix) {
-        assert(f);
-
-        if (!prefix)
-                prefix = "";
-
-        LIST_FOREACH(command, c, c)
-                exec_command_dump(c, f, prefix);
-}
-
-void exec_command_append_list(ExecCommand **l, ExecCommand *e) {
-        ExecCommand *end;
-
-        assert(l);
-        assert(e);
-
-        if (*l) {
-                /* It's kind of important, that we keep the order here */
-                LIST_FIND_TAIL(ExecCommand, command, *l, end);
-                LIST_INSERT_AFTER(ExecCommand, command, *l, end, e);
-        } else
-              *l = e;
-}
-
-int exec_command_set(ExecCommand *c, const char *path, ...) {
-        va_list ap;
-        char **l, *p;
-
-        assert(c);
-        assert(path);
-
-        va_start(ap, path);
-        l = strv_new_ap(path, ap);
-        va_end(ap);
-
-        if (!l)
-                return -ENOMEM;
-
-        if (!(p = strdup(path))) {
-                strv_free(l);
-                return -ENOMEM;
-        }
-
-        free(c->path);
-        c->path = p;
-
-        strv_free(c->argv);
-        c->argv = l;
-
-        return 0;
-}
-
-static const char* const exec_input_table[_EXEC_INPUT_MAX] = {
-        [EXEC_INPUT_NULL] = "null",
-        [EXEC_INPUT_TTY] = "tty",
-        [EXEC_INPUT_TTY_FORCE] = "tty-force",
-        [EXEC_INPUT_TTY_FAIL] = "tty-fail",
-        [EXEC_INPUT_SOCKET] = "socket"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(exec_input, ExecInput);
-
-static const char* const exec_output_table[_EXEC_OUTPUT_MAX] = {
-        [EXEC_OUTPUT_INHERIT] = "inherit",
-        [EXEC_OUTPUT_NULL] = "null",
-        [EXEC_OUTPUT_TTY] = "tty",
-        [EXEC_OUTPUT_SYSLOG] = "syslog",
-        [EXEC_OUTPUT_SYSLOG_AND_CONSOLE] = "syslog+console",
-        [EXEC_OUTPUT_KMSG] = "kmsg",
-        [EXEC_OUTPUT_KMSG_AND_CONSOLE] = "kmsg+console",
-        [EXEC_OUTPUT_JOURNAL] = "journal",
-        [EXEC_OUTPUT_JOURNAL_AND_CONSOLE] = "journal+console",
-        [EXEC_OUTPUT_SOCKET] = "socket"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(exec_output, ExecOutput);
-
-static const char* const kill_mode_table[_KILL_MODE_MAX] = {
-        [KILL_CONTROL_GROUP] = "control-group",
-        [KILL_PROCESS] = "process",
-        [KILL_NONE] = "none"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(kill_mode, KillMode);
-
-static const char* const kill_who_table[_KILL_WHO_MAX] = {
-        [KILL_MAIN] = "main",
-        [KILL_CONTROL] = "control",
-        [KILL_ALL] = "all"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(kill_who, KillWho);